1 /* bfd back-end for HP PA-RISC SOM objects. 2 Copyright (C) 1990-2020 Free Software Foundation, Inc. 3 4 Contributed by the Center for Software Science at the 5 University of Utah. 6 7 This file is part of BFD, the Binary File Descriptor library. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 22 02110-1301, USA. */ 23 24 #include "sysdep.h" 25 #include "alloca-conf.h" 26 #include "bfd.h" 27 #include "libiberty.h" 28 #include "libbfd.h" 29 #include "som.h" 30 #include "safe-ctype.h" 31 #include "som/reloc.h" 32 #include "aout/ar.h" 33 34 static bfd_reloc_status_type hppa_som_reloc 35 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 36 static bfd_boolean som_mkobject (bfd *); 37 static bfd_boolean som_is_space (asection *); 38 static bfd_boolean som_is_subspace (asection *); 39 static int compare_subspaces (const void *, const void *); 40 static uint32_t som_compute_checksum (struct som_external_header *); 41 static bfd_boolean som_build_and_write_symbol_table (bfd *); 42 static unsigned int som_slurp_symbol_table (bfd *); 43 44 /* Magic not defined in standard HP-UX header files until 8.0. */ 45 46 #ifndef CPU_PA_RISC1_0 47 #define CPU_PA_RISC1_0 0x20B 48 #endif /* CPU_PA_RISC1_0 */ 49 50 #ifndef CPU_PA_RISC1_1 51 #define CPU_PA_RISC1_1 0x210 52 #endif /* CPU_PA_RISC1_1 */ 53 54 #ifndef CPU_PA_RISC2_0 55 #define CPU_PA_RISC2_0 0x214 56 #endif /* CPU_PA_RISC2_0 */ 57 58 #ifndef _PA_RISC1_0_ID 59 #define _PA_RISC1_0_ID CPU_PA_RISC1_0 60 #endif /* _PA_RISC1_0_ID */ 61 62 #ifndef _PA_RISC1_1_ID 63 #define _PA_RISC1_1_ID CPU_PA_RISC1_1 64 #endif /* _PA_RISC1_1_ID */ 65 66 #ifndef _PA_RISC2_0_ID 67 #define _PA_RISC2_0_ID CPU_PA_RISC2_0 68 #endif /* _PA_RISC2_0_ID */ 69 70 #ifndef _PA_RISC_MAXID 71 #define _PA_RISC_MAXID 0x2FF 72 #endif /* _PA_RISC_MAXID */ 73 74 #ifndef _PA_RISC_ID 75 #define _PA_RISC_ID(__m_num) \ 76 (((__m_num) == _PA_RISC1_0_ID) || \ 77 ((__m_num) >= _PA_RISC1_1_ID && (__m_num) <= _PA_RISC_MAXID)) 78 #endif /* _PA_RISC_ID */ 79 80 /* HIUX in it's infinite stupidity changed the names for several "well 81 known" constants. Work around such braindamage. Try the HPUX version 82 first, then the HIUX version, and finally provide a default. */ 83 #ifdef HPUX_AUX_ID 84 #define EXEC_AUX_ID HPUX_AUX_ID 85 #endif 86 87 #if !defined (EXEC_AUX_ID) && defined (HIUX_AUX_ID) 88 #define EXEC_AUX_ID HIUX_AUX_ID 89 #endif 90 91 #ifndef EXEC_AUX_ID 92 #define EXEC_AUX_ID 0 93 #endif 94 95 /* Size (in chars) of the temporary buffers used during fixup and string 96 table writes. */ 97 98 #define SOM_TMP_BUFSIZE 8192 99 100 /* Size of the hash table in archives. */ 101 #define SOM_LST_HASH_SIZE 31 102 103 /* Max number of SOMs to be found in an archive. */ 104 #define SOM_LST_MODULE_LIMIT 1024 105 106 /* Generic alignment macro. */ 107 #define SOM_ALIGN(val, alignment) \ 108 (((val) + (alignment) - 1) &~ ((unsigned long) (alignment) - 1)) 109 110 /* SOM allows any one of the four previous relocations to be reused 111 with a "R_PREV_FIXUP" relocation entry. Since R_PREV_FIXUP 112 relocations are always a single byte, using a R_PREV_FIXUP instead 113 of some multi-byte relocation makes object files smaller. 114 115 Note one side effect of using a R_PREV_FIXUP is the relocation that 116 is being repeated moves to the front of the queue. */ 117 struct reloc_queue 118 { 119 unsigned char *reloc; 120 unsigned int size; 121 } reloc_queue[4]; 122 123 /* This fully describes the symbol types which may be attached to 124 an EXPORT or IMPORT directive. Only SOM uses this formation 125 (ELF has no need for it). */ 126 typedef enum 127 { 128 SYMBOL_TYPE_UNKNOWN, 129 SYMBOL_TYPE_ABSOLUTE, 130 SYMBOL_TYPE_CODE, 131 SYMBOL_TYPE_DATA, 132 SYMBOL_TYPE_ENTRY, 133 SYMBOL_TYPE_MILLICODE, 134 SYMBOL_TYPE_PLABEL, 135 SYMBOL_TYPE_PRI_PROG, 136 SYMBOL_TYPE_SEC_PROG, 137 } pa_symbol_type; 138 139 struct section_to_type 140 { 141 const char *section; 142 char type; 143 }; 144 145 /* Assorted symbol information that needs to be derived from the BFD symbol 146 and/or the BFD backend private symbol data. */ 147 struct som_misc_symbol_info 148 { 149 unsigned int symbol_type; 150 unsigned int symbol_scope; 151 unsigned int arg_reloc; 152 unsigned int symbol_info; 153 unsigned int symbol_value; 154 unsigned int priv_level; 155 unsigned int secondary_def; 156 unsigned int is_comdat; 157 unsigned int is_common; 158 unsigned int dup_common; 159 }; 160 161 /* Map SOM section names to POSIX/BSD single-character symbol types. 162 163 This table includes all the standard subspaces as defined in the 164 current "PRO ABI for PA-RISC Systems", $UNWIND$ which for 165 some reason was left out, and sections specific to embedded stabs. */ 166 167 static const struct section_to_type stt[] = 168 { 169 {"$TEXT$", 't'}, 170 {"$SHLIB_INFO$", 't'}, 171 {"$MILLICODE$", 't'}, 172 {"$LIT$", 't'}, 173 {"$CODE$", 't'}, 174 {"$UNWIND_START$", 't'}, 175 {"$UNWIND$", 't'}, 176 {"$PRIVATE$", 'd'}, 177 {"$PLT$", 'd'}, 178 {"$SHLIB_DATA$", 'd'}, 179 {"$DATA$", 'd'}, 180 {"$SHORTDATA$", 'g'}, 181 {"$DLT$", 'd'}, 182 {"$GLOBAL$", 'g'}, 183 {"$SHORTBSS$", 's'}, 184 {"$BSS$", 'b'}, 185 {"$GDB_STRINGS$", 'N'}, 186 {"$GDB_SYMBOLS$", 'N'}, 187 {0, 0} 188 }; 189 190 /* About the relocation formatting table... 191 192 There are 256 entries in the table, one for each possible 193 relocation opcode available in SOM. We index the table by 194 the relocation opcode. The names and operations are those 195 defined by a.out_800 (4). 196 197 Right now this table is only used to count and perform minimal 198 processing on relocation streams so that they can be internalized 199 into BFD and symbolically printed by utilities. To make actual use 200 of them would be much more difficult, BFD's concept of relocations 201 is far too simple to handle SOM relocations. The basic assumption 202 that a relocation can be completely processed independent of other 203 relocations before an object file is written is invalid for SOM. 204 205 The SOM relocations are meant to be processed as a stream, they 206 specify copying of data from the input section to the output section 207 while possibly modifying the data in some manner. They also can 208 specify that a variable number of zeros or uninitialized data be 209 inserted on in the output segment at the current offset. Some 210 relocations specify that some previous relocation be re-applied at 211 the current location in the input/output sections. And finally a number 212 of relocations have effects on other sections (R_ENTRY, R_EXIT, 213 R_UNWIND_AUX and a variety of others). There isn't even enough room 214 in the BFD relocation data structure to store enough information to 215 perform all the relocations. 216 217 Each entry in the table has three fields. 218 219 The first entry is an index into this "class" of relocations. This 220 index can then be used as a variable within the relocation itself. 221 222 The second field is a format string which actually controls processing 223 of the relocation. It uses a simple postfix machine to do calculations 224 based on variables/constants found in the string and the relocation 225 stream. 226 227 The third field specifys whether or not this relocation may use 228 a constant (V) from the previous R_DATA_OVERRIDE rather than a constant 229 stored in the instruction. 230 231 Variables: 232 233 L = input space byte count 234 D = index into class of relocations 235 M = output space byte count 236 N = statement number (unused?) 237 O = stack operation 238 R = parameter relocation bits 239 S = symbol index 240 T = first 32 bits of stack unwind information 241 U = second 32 bits of stack unwind information 242 V = a literal constant (usually used in the next relocation) 243 P = a previous relocation 244 245 Lower case letters (starting with 'b') refer to following 246 bytes in the relocation stream. 'b' is the next 1 byte, 247 c is the next 2 bytes, d is the next 3 bytes, etc... 248 This is the variable part of the relocation entries that 249 makes our life a living hell. 250 251 numerical constants are also used in the format string. Note 252 the constants are represented in decimal. 253 254 '+', "*" and "=" represents the obvious postfix operators. 255 '<' represents a left shift. 256 257 Stack Operations: 258 259 Parameter Relocation Bits: 260 261 Unwind Entries: 262 263 Previous Relocations: The index field represents which in the queue 264 of 4 previous fixups should be re-applied. 265 266 Literal Constants: These are generally used to represent addend 267 parts of relocations when these constants are not stored in the 268 fields of the instructions themselves. For example the instruction 269 addil foo-$global$-0x1234 would use an override for "0x1234" rather 270 than storing it into the addil itself. */ 271 272 struct fixup_format 273 { 274 int D; 275 const char *format; 276 }; 277 278 static const struct fixup_format som_fixup_formats[256] = 279 { 280 /* R_NO_RELOCATION. */ 281 { 0, "LD1+4*=" }, /* 0x00 */ 282 { 1, "LD1+4*=" }, /* 0x01 */ 283 { 2, "LD1+4*=" }, /* 0x02 */ 284 { 3, "LD1+4*=" }, /* 0x03 */ 285 { 4, "LD1+4*=" }, /* 0x04 */ 286 { 5, "LD1+4*=" }, /* 0x05 */ 287 { 6, "LD1+4*=" }, /* 0x06 */ 288 { 7, "LD1+4*=" }, /* 0x07 */ 289 { 8, "LD1+4*=" }, /* 0x08 */ 290 { 9, "LD1+4*=" }, /* 0x09 */ 291 { 10, "LD1+4*=" }, /* 0x0a */ 292 { 11, "LD1+4*=" }, /* 0x0b */ 293 { 12, "LD1+4*=" }, /* 0x0c */ 294 { 13, "LD1+4*=" }, /* 0x0d */ 295 { 14, "LD1+4*=" }, /* 0x0e */ 296 { 15, "LD1+4*=" }, /* 0x0f */ 297 { 16, "LD1+4*=" }, /* 0x10 */ 298 { 17, "LD1+4*=" }, /* 0x11 */ 299 { 18, "LD1+4*=" }, /* 0x12 */ 300 { 19, "LD1+4*=" }, /* 0x13 */ 301 { 20, "LD1+4*=" }, /* 0x14 */ 302 { 21, "LD1+4*=" }, /* 0x15 */ 303 { 22, "LD1+4*=" }, /* 0x16 */ 304 { 23, "LD1+4*=" }, /* 0x17 */ 305 { 0, "LD8<b+1+4*=" }, /* 0x18 */ 306 { 1, "LD8<b+1+4*=" }, /* 0x19 */ 307 { 2, "LD8<b+1+4*=" }, /* 0x1a */ 308 { 3, "LD8<b+1+4*=" }, /* 0x1b */ 309 { 0, "LD16<c+1+4*=" }, /* 0x1c */ 310 { 1, "LD16<c+1+4*=" }, /* 0x1d */ 311 { 2, "LD16<c+1+4*=" }, /* 0x1e */ 312 { 0, "Ld1+=" }, /* 0x1f */ 313 /* R_ZEROES. */ 314 { 0, "Lb1+4*=" }, /* 0x20 */ 315 { 1, "Ld1+=" }, /* 0x21 */ 316 /* R_UNINIT. */ 317 { 0, "Lb1+4*=" }, /* 0x22 */ 318 { 1, "Ld1+=" }, /* 0x23 */ 319 /* R_RELOCATION. */ 320 { 0, "L4=" }, /* 0x24 */ 321 /* R_DATA_ONE_SYMBOL. */ 322 { 0, "L4=Sb=" }, /* 0x25 */ 323 { 1, "L4=Sd=" }, /* 0x26 */ 324 /* R_DATA_PLABEL. */ 325 { 0, "L4=Sb=" }, /* 0x27 */ 326 { 1, "L4=Sd=" }, /* 0x28 */ 327 /* R_SPACE_REF. */ 328 { 0, "L4=" }, /* 0x29 */ 329 /* R_REPEATED_INIT. */ 330 { 0, "L4=Mb1+4*=" }, /* 0x2a */ 331 { 1, "Lb4*=Mb1+L*=" }, /* 0x2b */ 332 { 2, "Lb4*=Md1+4*=" }, /* 0x2c */ 333 { 3, "Ld1+=Me1+=" }, /* 0x2d */ 334 { 0, "" }, /* 0x2e */ 335 { 0, "" }, /* 0x2f */ 336 /* R_PCREL_CALL. */ 337 { 0, "L4=RD=Sb=" }, /* 0x30 */ 338 { 1, "L4=RD=Sb=" }, /* 0x31 */ 339 { 2, "L4=RD=Sb=" }, /* 0x32 */ 340 { 3, "L4=RD=Sb=" }, /* 0x33 */ 341 { 4, "L4=RD=Sb=" }, /* 0x34 */ 342 { 5, "L4=RD=Sb=" }, /* 0x35 */ 343 { 6, "L4=RD=Sb=" }, /* 0x36 */ 344 { 7, "L4=RD=Sb=" }, /* 0x37 */ 345 { 8, "L4=RD=Sb=" }, /* 0x38 */ 346 { 9, "L4=RD=Sb=" }, /* 0x39 */ 347 { 0, "L4=RD8<b+=Sb=" }, /* 0x3a */ 348 { 1, "L4=RD8<b+=Sb=" }, /* 0x3b */ 349 { 0, "L4=RD8<b+=Sd=" }, /* 0x3c */ 350 { 1, "L4=RD8<b+=Sd=" }, /* 0x3d */ 351 /* R_SHORT_PCREL_MODE. */ 352 { 0, "" }, /* 0x3e */ 353 /* R_LONG_PCREL_MODE. */ 354 { 0, "" }, /* 0x3f */ 355 /* R_ABS_CALL. */ 356 { 0, "L4=RD=Sb=" }, /* 0x40 */ 357 { 1, "L4=RD=Sb=" }, /* 0x41 */ 358 { 2, "L4=RD=Sb=" }, /* 0x42 */ 359 { 3, "L4=RD=Sb=" }, /* 0x43 */ 360 { 4, "L4=RD=Sb=" }, /* 0x44 */ 361 { 5, "L4=RD=Sb=" }, /* 0x45 */ 362 { 6, "L4=RD=Sb=" }, /* 0x46 */ 363 { 7, "L4=RD=Sb=" }, /* 0x47 */ 364 { 8, "L4=RD=Sb=" }, /* 0x48 */ 365 { 9, "L4=RD=Sb=" }, /* 0x49 */ 366 { 0, "L4=RD8<b+=Sb=" }, /* 0x4a */ 367 { 1, "L4=RD8<b+=Sb=" }, /* 0x4b */ 368 { 0, "L4=RD8<b+=Sd=" }, /* 0x4c */ 369 { 1, "L4=RD8<b+=Sd=" }, /* 0x4d */ 370 /* R_RESERVED. */ 371 { 0, "" }, /* 0x4e */ 372 { 0, "" }, /* 0x4f */ 373 /* R_DP_RELATIVE. */ 374 { 0, "L4=SD=" }, /* 0x50 */ 375 { 1, "L4=SD=" }, /* 0x51 */ 376 { 2, "L4=SD=" }, /* 0x52 */ 377 { 3, "L4=SD=" }, /* 0x53 */ 378 { 4, "L4=SD=" }, /* 0x54 */ 379 { 5, "L4=SD=" }, /* 0x55 */ 380 { 6, "L4=SD=" }, /* 0x56 */ 381 { 7, "L4=SD=" }, /* 0x57 */ 382 { 8, "L4=SD=" }, /* 0x58 */ 383 { 9, "L4=SD=" }, /* 0x59 */ 384 { 10, "L4=SD=" }, /* 0x5a */ 385 { 11, "L4=SD=" }, /* 0x5b */ 386 { 12, "L4=SD=" }, /* 0x5c */ 387 { 13, "L4=SD=" }, /* 0x5d */ 388 { 14, "L4=SD=" }, /* 0x5e */ 389 { 15, "L4=SD=" }, /* 0x5f */ 390 { 16, "L4=SD=" }, /* 0x60 */ 391 { 17, "L4=SD=" }, /* 0x61 */ 392 { 18, "L4=SD=" }, /* 0x62 */ 393 { 19, "L4=SD=" }, /* 0x63 */ 394 { 20, "L4=SD=" }, /* 0x64 */ 395 { 21, "L4=SD=" }, /* 0x65 */ 396 { 22, "L4=SD=" }, /* 0x66 */ 397 { 23, "L4=SD=" }, /* 0x67 */ 398 { 24, "L4=SD=" }, /* 0x68 */ 399 { 25, "L4=SD=" }, /* 0x69 */ 400 { 26, "L4=SD=" }, /* 0x6a */ 401 { 27, "L4=SD=" }, /* 0x6b */ 402 { 28, "L4=SD=" }, /* 0x6c */ 403 { 29, "L4=SD=" }, /* 0x6d */ 404 { 30, "L4=SD=" }, /* 0x6e */ 405 { 31, "L4=SD=" }, /* 0x6f */ 406 { 32, "L4=Sb=" }, /* 0x70 */ 407 { 33, "L4=Sd=" }, /* 0x71 */ 408 /* R_DATA_GPREL. */ 409 { 0, "L4=Sd=" }, /* 0x72 */ 410 /* R_RESERVED. */ 411 { 0, "" }, /* 0x73 */ 412 { 0, "" }, /* 0x74 */ 413 { 0, "" }, /* 0x75 */ 414 { 0, "" }, /* 0x76 */ 415 { 0, "" }, /* 0x77 */ 416 /* R_DLT_REL. */ 417 { 0, "L4=Sb=" }, /* 0x78 */ 418 { 1, "L4=Sd=" }, /* 0x79 */ 419 /* R_RESERVED. */ 420 { 0, "" }, /* 0x7a */ 421 { 0, "" }, /* 0x7b */ 422 { 0, "" }, /* 0x7c */ 423 { 0, "" }, /* 0x7d */ 424 { 0, "" }, /* 0x7e */ 425 { 0, "" }, /* 0x7f */ 426 /* R_CODE_ONE_SYMBOL. */ 427 { 0, "L4=SD=" }, /* 0x80 */ 428 { 1, "L4=SD=" }, /* 0x81 */ 429 { 2, "L4=SD=" }, /* 0x82 */ 430 { 3, "L4=SD=" }, /* 0x83 */ 431 { 4, "L4=SD=" }, /* 0x84 */ 432 { 5, "L4=SD=" }, /* 0x85 */ 433 { 6, "L4=SD=" }, /* 0x86 */ 434 { 7, "L4=SD=" }, /* 0x87 */ 435 { 8, "L4=SD=" }, /* 0x88 */ 436 { 9, "L4=SD=" }, /* 0x89 */ 437 { 10, "L4=SD=" }, /* 0x8q */ 438 { 11, "L4=SD=" }, /* 0x8b */ 439 { 12, "L4=SD=" }, /* 0x8c */ 440 { 13, "L4=SD=" }, /* 0x8d */ 441 { 14, "L4=SD=" }, /* 0x8e */ 442 { 15, "L4=SD=" }, /* 0x8f */ 443 { 16, "L4=SD=" }, /* 0x90 */ 444 { 17, "L4=SD=" }, /* 0x91 */ 445 { 18, "L4=SD=" }, /* 0x92 */ 446 { 19, "L4=SD=" }, /* 0x93 */ 447 { 20, "L4=SD=" }, /* 0x94 */ 448 { 21, "L4=SD=" }, /* 0x95 */ 449 { 22, "L4=SD=" }, /* 0x96 */ 450 { 23, "L4=SD=" }, /* 0x97 */ 451 { 24, "L4=SD=" }, /* 0x98 */ 452 { 25, "L4=SD=" }, /* 0x99 */ 453 { 26, "L4=SD=" }, /* 0x9a */ 454 { 27, "L4=SD=" }, /* 0x9b */ 455 { 28, "L4=SD=" }, /* 0x9c */ 456 { 29, "L4=SD=" }, /* 0x9d */ 457 { 30, "L4=SD=" }, /* 0x9e */ 458 { 31, "L4=SD=" }, /* 0x9f */ 459 { 32, "L4=Sb=" }, /* 0xa0 */ 460 { 33, "L4=Sd=" }, /* 0xa1 */ 461 /* R_RESERVED. */ 462 { 0, "" }, /* 0xa2 */ 463 { 0, "" }, /* 0xa3 */ 464 { 0, "" }, /* 0xa4 */ 465 { 0, "" }, /* 0xa5 */ 466 { 0, "" }, /* 0xa6 */ 467 { 0, "" }, /* 0xa7 */ 468 { 0, "" }, /* 0xa8 */ 469 { 0, "" }, /* 0xa9 */ 470 { 0, "" }, /* 0xaa */ 471 { 0, "" }, /* 0xab */ 472 { 0, "" }, /* 0xac */ 473 { 0, "" }, /* 0xad */ 474 /* R_MILLI_REL. */ 475 { 0, "L4=Sb=" }, /* 0xae */ 476 { 1, "L4=Sd=" }, /* 0xaf */ 477 /* R_CODE_PLABEL. */ 478 { 0, "L4=Sb=" }, /* 0xb0 */ 479 { 1, "L4=Sd=" }, /* 0xb1 */ 480 /* R_BREAKPOINT. */ 481 { 0, "L4=" }, /* 0xb2 */ 482 /* R_ENTRY. */ 483 { 0, "Te=Ue=" }, /* 0xb3 */ 484 { 1, "Uf=" }, /* 0xb4 */ 485 /* R_ALT_ENTRY. */ 486 { 0, "" }, /* 0xb5 */ 487 /* R_EXIT. */ 488 { 0, "" }, /* 0xb6 */ 489 /* R_BEGIN_TRY. */ 490 { 0, "" }, /* 0xb7 */ 491 /* R_END_TRY. */ 492 { 0, "R0=" }, /* 0xb8 */ 493 { 1, "Rb4*=" }, /* 0xb9 */ 494 { 2, "Rd4*=" }, /* 0xba */ 495 /* R_BEGIN_BRTAB. */ 496 { 0, "" }, /* 0xbb */ 497 /* R_END_BRTAB. */ 498 { 0, "" }, /* 0xbc */ 499 /* R_STATEMENT. */ 500 { 0, "Nb=" }, /* 0xbd */ 501 { 1, "Nc=" }, /* 0xbe */ 502 { 2, "Nd=" }, /* 0xbf */ 503 /* R_DATA_EXPR. */ 504 { 0, "L4=" }, /* 0xc0 */ 505 /* R_CODE_EXPR. */ 506 { 0, "L4=" }, /* 0xc1 */ 507 /* R_FSEL. */ 508 { 0, "" }, /* 0xc2 */ 509 /* R_LSEL. */ 510 { 0, "" }, /* 0xc3 */ 511 /* R_RSEL. */ 512 { 0, "" }, /* 0xc4 */ 513 /* R_N_MODE. */ 514 { 0, "" }, /* 0xc5 */ 515 /* R_S_MODE. */ 516 { 0, "" }, /* 0xc6 */ 517 /* R_D_MODE. */ 518 { 0, "" }, /* 0xc7 */ 519 /* R_R_MODE. */ 520 { 0, "" }, /* 0xc8 */ 521 /* R_DATA_OVERRIDE. */ 522 { 0, "V0=" }, /* 0xc9 */ 523 { 1, "Vb=" }, /* 0xca */ 524 { 2, "Vc=" }, /* 0xcb */ 525 { 3, "Vd=" }, /* 0xcc */ 526 { 4, "Ve=" }, /* 0xcd */ 527 /* R_TRANSLATED. */ 528 { 0, "" }, /* 0xce */ 529 /* R_AUX_UNWIND. */ 530 { 0,"Sd=Ve=Ee=" }, /* 0xcf */ 531 /* R_COMP1. */ 532 { 0, "Ob=" }, /* 0xd0 */ 533 /* R_COMP2. */ 534 { 0, "Ob=Sd=" }, /* 0xd1 */ 535 /* R_COMP3. */ 536 { 0, "Ob=Ve=" }, /* 0xd2 */ 537 /* R_PREV_FIXUP. */ 538 { 0, "P" }, /* 0xd3 */ 539 { 1, "P" }, /* 0xd4 */ 540 { 2, "P" }, /* 0xd5 */ 541 { 3, "P" }, /* 0xd6 */ 542 /* R_SEC_STMT. */ 543 { 0, "" }, /* 0xd7 */ 544 /* R_N0SEL. */ 545 { 0, "" }, /* 0xd8 */ 546 /* R_N1SEL. */ 547 { 0, "" }, /* 0xd9 */ 548 /* R_LINETAB. */ 549 { 0, "Eb=Sd=Ve=" }, /* 0xda */ 550 /* R_LINETAB_ESC. */ 551 { 0, "Eb=Mb=" }, /* 0xdb */ 552 /* R_LTP_OVERRIDE. */ 553 { 0, "" }, /* 0xdc */ 554 /* R_COMMENT. */ 555 { 0, "Ob=Vf=" }, /* 0xdd */ 556 /* R_RESERVED. */ 557 { 0, "" }, /* 0xde */ 558 { 0, "" }, /* 0xdf */ 559 { 0, "" }, /* 0xe0 */ 560 { 0, "" }, /* 0xe1 */ 561 { 0, "" }, /* 0xe2 */ 562 { 0, "" }, /* 0xe3 */ 563 { 0, "" }, /* 0xe4 */ 564 { 0, "" }, /* 0xe5 */ 565 { 0, "" }, /* 0xe6 */ 566 { 0, "" }, /* 0xe7 */ 567 { 0, "" }, /* 0xe8 */ 568 { 0, "" }, /* 0xe9 */ 569 { 0, "" }, /* 0xea */ 570 { 0, "" }, /* 0xeb */ 571 { 0, "" }, /* 0xec */ 572 { 0, "" }, /* 0xed */ 573 { 0, "" }, /* 0xee */ 574 { 0, "" }, /* 0xef */ 575 { 0, "" }, /* 0xf0 */ 576 { 0, "" }, /* 0xf1 */ 577 { 0, "" }, /* 0xf2 */ 578 { 0, "" }, /* 0xf3 */ 579 { 0, "" }, /* 0xf4 */ 580 { 0, "" }, /* 0xf5 */ 581 { 0, "" }, /* 0xf6 */ 582 { 0, "" }, /* 0xf7 */ 583 { 0, "" }, /* 0xf8 */ 584 { 0, "" }, /* 0xf9 */ 585 { 0, "" }, /* 0xfa */ 586 { 0, "" }, /* 0xfb */ 587 { 0, "" }, /* 0xfc */ 588 { 0, "" }, /* 0xfd */ 589 { 0, "" }, /* 0xfe */ 590 { 0, "" }, /* 0xff */ 591 }; 592 593 static const int comp1_opcodes[] = 594 { 595 0x00, 596 0x40, 597 0x41, 598 0x42, 599 0x43, 600 0x44, 601 0x45, 602 0x46, 603 0x47, 604 0x48, 605 0x49, 606 0x4a, 607 0x4b, 608 0x60, 609 0x80, 610 0xa0, 611 0xc0, 612 -1 613 }; 614 615 static const int comp2_opcodes[] = 616 { 617 0x00, 618 0x80, 619 0x82, 620 0xc0, 621 -1 622 }; 623 624 static const int comp3_opcodes[] = 625 { 626 0x00, 627 0x02, 628 -1 629 }; 630 631 /* These apparently are not in older versions of hpux reloc.h (hpux7). */ 632 633 /* And these first appeared in hpux10. */ 634 #ifndef R_SHORT_PCREL_MODE 635 #define NO_PCREL_MODES 636 #define R_SHORT_PCREL_MODE 0x3e 637 #endif 638 639 #define SOM_HOWTO(TYPE, NAME) \ 640 HOWTO(TYPE, 0, 0, 32, FALSE, 0, 0, hppa_som_reloc, NAME, FALSE, 0, 0, FALSE) 641 642 static reloc_howto_type som_hppa_howto_table[] = 643 { 644 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 645 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 646 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 647 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 648 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 649 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 650 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 651 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 652 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 653 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 654 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 655 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 656 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 657 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 658 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 659 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 660 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 661 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 662 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 663 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 664 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 665 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 666 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 667 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 668 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 669 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 670 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 671 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 672 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 673 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 674 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 675 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), 676 SOM_HOWTO (R_ZEROES, "R_ZEROES"), 677 SOM_HOWTO (R_ZEROES, "R_ZEROES"), 678 SOM_HOWTO (R_UNINIT, "R_UNINIT"), 679 SOM_HOWTO (R_UNINIT, "R_UNINIT"), 680 SOM_HOWTO (R_RELOCATION, "R_RELOCATION"), 681 SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"), 682 SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"), 683 SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"), 684 SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"), 685 SOM_HOWTO (R_SPACE_REF, "R_SPACE_REF"), 686 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"), 687 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"), 688 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"), 689 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"), 690 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 691 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 692 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 693 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 694 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 695 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 696 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 697 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 698 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 699 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 700 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 701 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 702 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 703 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 704 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 705 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), 706 SOM_HOWTO (R_SHORT_PCREL_MODE, "R_SHORT_PCREL_MODE"), 707 SOM_HOWTO (R_LONG_PCREL_MODE, "R_LONG_PCREL_MODE"), 708 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 709 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 710 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 711 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 712 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 713 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 714 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 715 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 716 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 717 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 718 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 719 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 720 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 721 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), 722 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 723 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 724 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 725 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 726 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 727 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 728 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 729 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 730 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 731 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 732 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 733 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 734 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 735 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 736 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 737 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 738 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 739 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 740 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 741 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 742 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 743 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 744 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 745 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 746 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 747 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 748 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 749 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 750 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 751 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 752 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 753 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 754 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 755 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 756 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 757 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), 758 SOM_HOWTO (R_DATA_GPREL, "R_DATA_GPREL"), 759 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 760 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 761 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 762 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 763 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 764 SOM_HOWTO (R_DLT_REL, "R_DLT_REL"), 765 SOM_HOWTO (R_DLT_REL, "R_DLT_REL"), 766 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 767 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 768 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 769 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 770 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 771 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 772 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 773 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 774 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 775 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 776 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 777 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 778 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 779 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 780 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 781 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 782 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 783 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 784 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 785 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 786 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 787 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 788 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 789 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 790 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 791 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 792 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 793 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 794 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 795 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 796 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 797 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 798 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 799 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 800 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 801 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 802 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 803 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 804 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 805 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 806 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), 807 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 808 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 809 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 810 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 811 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 812 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 813 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 814 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 815 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 816 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 817 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 818 SOM_HOWTO (R_MILLI_REL, "R_MILLI_REL"), 819 SOM_HOWTO (R_MILLI_REL, "R_MILLI_REL"), 820 SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"), 821 SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"), 822 SOM_HOWTO (R_BREAKPOINT, "R_BREAKPOINT"), 823 SOM_HOWTO (R_ENTRY, "R_ENTRY"), 824 SOM_HOWTO (R_ENTRY, "R_ENTRY"), 825 SOM_HOWTO (R_ALT_ENTRY, "R_ALT_ENTRY"), 826 SOM_HOWTO (R_EXIT, "R_EXIT"), 827 SOM_HOWTO (R_BEGIN_TRY, "R_BEGIN_TRY"), 828 SOM_HOWTO (R_END_TRY, "R_END_TRY"), 829 SOM_HOWTO (R_END_TRY, "R_END_TRY"), 830 SOM_HOWTO (R_END_TRY, "R_END_TRY"), 831 SOM_HOWTO (R_BEGIN_BRTAB, "R_BEGIN_BRTAB"), 832 SOM_HOWTO (R_END_BRTAB, "R_END_BRTAB"), 833 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"), 834 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"), 835 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"), 836 SOM_HOWTO (R_DATA_EXPR, "R_DATA_EXPR"), 837 SOM_HOWTO (R_CODE_EXPR, "R_CODE_EXPR"), 838 SOM_HOWTO (R_FSEL, "R_FSEL"), 839 SOM_HOWTO (R_LSEL, "R_LSEL"), 840 SOM_HOWTO (R_RSEL, "R_RSEL"), 841 SOM_HOWTO (R_N_MODE, "R_N_MODE"), 842 SOM_HOWTO (R_S_MODE, "R_S_MODE"), 843 SOM_HOWTO (R_D_MODE, "R_D_MODE"), 844 SOM_HOWTO (R_R_MODE, "R_R_MODE"), 845 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), 846 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), 847 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), 848 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), 849 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), 850 SOM_HOWTO (R_TRANSLATED, "R_TRANSLATED"), 851 SOM_HOWTO (R_AUX_UNWIND, "R_AUX_UNWIND"), 852 SOM_HOWTO (R_COMP1, "R_COMP1"), 853 SOM_HOWTO (R_COMP2, "R_COMP2"), 854 SOM_HOWTO (R_COMP3, "R_COMP3"), 855 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"), 856 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"), 857 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"), 858 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"), 859 SOM_HOWTO (R_SEC_STMT, "R_SEC_STMT"), 860 SOM_HOWTO (R_N0SEL, "R_N0SEL"), 861 SOM_HOWTO (R_N1SEL, "R_N1SEL"), 862 SOM_HOWTO (R_LINETAB, "R_LINETAB"), 863 SOM_HOWTO (R_LINETAB_ESC, "R_LINETAB_ESC"), 864 SOM_HOWTO (R_LTP_OVERRIDE, "R_LTP_OVERRIDE"), 865 SOM_HOWTO (R_COMMENT, "R_COMMENT"), 866 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 867 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 868 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 869 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 870 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 871 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 872 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 873 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 874 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 875 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 876 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 877 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 878 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 879 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 880 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 881 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 882 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 883 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 884 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 885 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 886 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 887 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 888 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 889 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 890 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 891 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 892 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 893 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 894 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 895 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 896 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 897 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 898 SOM_HOWTO (R_RESERVED, "R_RESERVED"), 899 SOM_HOWTO (R_RESERVED, "R_RESERVED") 900 }; 901 902 /* Initialize the SOM relocation queue. By definition the queue holds 903 the last four multibyte fixups. */ 904 905 static void 906 som_initialize_reloc_queue (struct reloc_queue *queue) 907 { 908 queue[0].reloc = NULL; 909 queue[0].size = 0; 910 queue[1].reloc = NULL; 911 queue[1].size = 0; 912 queue[2].reloc = NULL; 913 queue[2].size = 0; 914 queue[3].reloc = NULL; 915 queue[3].size = 0; 916 } 917 918 /* Insert a new relocation into the relocation queue. */ 919 920 static void 921 som_reloc_queue_insert (unsigned char *p, 922 unsigned int size, 923 struct reloc_queue *queue) 924 { 925 queue[3].reloc = queue[2].reloc; 926 queue[3].size = queue[2].size; 927 queue[2].reloc = queue[1].reloc; 928 queue[2].size = queue[1].size; 929 queue[1].reloc = queue[0].reloc; 930 queue[1].size = queue[0].size; 931 queue[0].reloc = p; 932 queue[0].size = size; 933 } 934 935 /* When an entry in the relocation queue is reused, the entry moves 936 to the front of the queue. */ 937 938 static void 939 som_reloc_queue_fix (struct reloc_queue *queue, unsigned int idx) 940 { 941 if (idx == 0) 942 return; 943 944 if (idx == 1) 945 { 946 unsigned char *tmp1 = queue[0].reloc; 947 unsigned int tmp2 = queue[0].size; 948 949 queue[0].reloc = queue[1].reloc; 950 queue[0].size = queue[1].size; 951 queue[1].reloc = tmp1; 952 queue[1].size = tmp2; 953 return; 954 } 955 956 if (idx == 2) 957 { 958 unsigned char *tmp1 = queue[0].reloc; 959 unsigned int tmp2 = queue[0].size; 960 961 queue[0].reloc = queue[2].reloc; 962 queue[0].size = queue[2].size; 963 queue[2].reloc = queue[1].reloc; 964 queue[2].size = queue[1].size; 965 queue[1].reloc = tmp1; 966 queue[1].size = tmp2; 967 return; 968 } 969 970 if (idx == 3) 971 { 972 unsigned char *tmp1 = queue[0].reloc; 973 unsigned int tmp2 = queue[0].size; 974 975 queue[0].reloc = queue[3].reloc; 976 queue[0].size = queue[3].size; 977 queue[3].reloc = queue[2].reloc; 978 queue[3].size = queue[2].size; 979 queue[2].reloc = queue[1].reloc; 980 queue[2].size = queue[1].size; 981 queue[1].reloc = tmp1; 982 queue[1].size = tmp2; 983 return; 984 } 985 abort (); 986 } 987 988 /* Search for a particular relocation in the relocation queue. */ 989 990 static int 991 som_reloc_queue_find (unsigned char *p, 992 unsigned int size, 993 struct reloc_queue *queue) 994 { 995 if (queue[0].reloc && !memcmp (p, queue[0].reloc, size) 996 && size == queue[0].size) 997 return 0; 998 if (queue[1].reloc && !memcmp (p, queue[1].reloc, size) 999 && size == queue[1].size) 1000 return 1; 1001 if (queue[2].reloc && !memcmp (p, queue[2].reloc, size) 1002 && size == queue[2].size) 1003 return 2; 1004 if (queue[3].reloc && !memcmp (p, queue[3].reloc, size) 1005 && size == queue[3].size) 1006 return 3; 1007 return -1; 1008 } 1009 1010 static unsigned char * 1011 try_prev_fixup (bfd *abfd ATTRIBUTE_UNUSED, 1012 unsigned int *subspace_reloc_sizep, 1013 unsigned char *p, 1014 unsigned int size, 1015 struct reloc_queue *queue) 1016 { 1017 int queue_index = som_reloc_queue_find (p, size, queue); 1018 1019 if (queue_index != -1) 1020 { 1021 /* Found this in a previous fixup. Undo the fixup we 1022 just built and use R_PREV_FIXUP instead. We saved 1023 a total of size - 1 bytes in the fixup stream. */ 1024 bfd_put_8 (abfd, R_PREV_FIXUP + queue_index, p); 1025 p += 1; 1026 *subspace_reloc_sizep += 1; 1027 som_reloc_queue_fix (queue, queue_index); 1028 } 1029 else 1030 { 1031 som_reloc_queue_insert (p, size, queue); 1032 *subspace_reloc_sizep += size; 1033 p += size; 1034 } 1035 return p; 1036 } 1037 1038 /* Emit the proper R_NO_RELOCATION fixups to map the next SKIP 1039 bytes without any relocation. Update the size of the subspace 1040 relocation stream via SUBSPACE_RELOC_SIZE_P; also return the 1041 current pointer into the relocation stream. */ 1042 1043 static unsigned char * 1044 som_reloc_skip (bfd *abfd, 1045 unsigned int skip, 1046 unsigned char *p, 1047 unsigned int *subspace_reloc_sizep, 1048 struct reloc_queue *queue) 1049 { 1050 /* Use a 4 byte R_NO_RELOCATION entry with a maximal value 1051 then R_PREV_FIXUPs to get the difference down to a 1052 reasonable size. */ 1053 if (skip >= 0x1000000) 1054 { 1055 skip -= 0x1000000; 1056 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p); 1057 bfd_put_8 (abfd, 0xff, p + 1); 1058 bfd_put_16 (abfd, (bfd_vma) 0xffff, p + 2); 1059 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue); 1060 while (skip >= 0x1000000) 1061 { 1062 skip -= 0x1000000; 1063 bfd_put_8 (abfd, R_PREV_FIXUP, p); 1064 p++; 1065 *subspace_reloc_sizep += 1; 1066 /* No need to adjust queue here since we are repeating the 1067 most recent fixup. */ 1068 } 1069 } 1070 1071 /* The difference must be less than 0x1000000. Use one 1072 more R_NO_RELOCATION entry to get to the right difference. */ 1073 if ((skip & 3) == 0 && skip <= 0xc0000 && skip > 0) 1074 { 1075 /* Difference can be handled in a simple single-byte 1076 R_NO_RELOCATION entry. */ 1077 if (skip <= 0x60) 1078 { 1079 bfd_put_8 (abfd, R_NO_RELOCATION + (skip >> 2) - 1, p); 1080 *subspace_reloc_sizep += 1; 1081 p++; 1082 } 1083 /* Handle it with a two byte R_NO_RELOCATION entry. */ 1084 else if (skip <= 0x1000) 1085 { 1086 bfd_put_8 (abfd, R_NO_RELOCATION + 24 + (((skip >> 2) - 1) >> 8), p); 1087 bfd_put_8 (abfd, (skip >> 2) - 1, p + 1); 1088 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue); 1089 } 1090 /* Handle it with a three byte R_NO_RELOCATION entry. */ 1091 else 1092 { 1093 bfd_put_8 (abfd, R_NO_RELOCATION + 28 + (((skip >> 2) - 1) >> 16), p); 1094 bfd_put_16 (abfd, (bfd_vma) (skip >> 2) - 1, p + 1); 1095 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue); 1096 } 1097 } 1098 /* Ugh. Punt and use a 4 byte entry. */ 1099 else if (skip > 0) 1100 { 1101 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p); 1102 bfd_put_8 (abfd, (skip - 1) >> 16, p + 1); 1103 bfd_put_16 (abfd, (bfd_vma) skip - 1, p + 2); 1104 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue); 1105 } 1106 return p; 1107 } 1108 1109 /* Emit the proper R_DATA_OVERRIDE fixups to handle a nonzero addend 1110 from a BFD relocation. Update the size of the subspace relocation 1111 stream via SUBSPACE_RELOC_SIZE_P; also return the current pointer 1112 into the relocation stream. */ 1113 1114 static unsigned char * 1115 som_reloc_addend (bfd *abfd, 1116 bfd_vma addend, 1117 unsigned char *p, 1118 unsigned int *subspace_reloc_sizep, 1119 struct reloc_queue *queue) 1120 { 1121 if (addend + 0x80 < 0x100) 1122 { 1123 bfd_put_8 (abfd, R_DATA_OVERRIDE + 1, p); 1124 bfd_put_8 (abfd, addend, p + 1); 1125 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue); 1126 } 1127 else if (addend + 0x8000 < 0x10000) 1128 { 1129 bfd_put_8 (abfd, R_DATA_OVERRIDE + 2, p); 1130 bfd_put_16 (abfd, addend, p + 1); 1131 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue); 1132 } 1133 else if (addend + 0x800000 < 0x1000000) 1134 { 1135 bfd_put_8 (abfd, R_DATA_OVERRIDE + 3, p); 1136 bfd_put_8 (abfd, addend >> 16, p + 1); 1137 bfd_put_16 (abfd, addend, p + 2); 1138 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue); 1139 } 1140 else 1141 { 1142 bfd_put_8 (abfd, R_DATA_OVERRIDE + 4, p); 1143 bfd_put_32 (abfd, addend, p + 1); 1144 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue); 1145 } 1146 return p; 1147 } 1148 1149 /* Handle a single function call relocation. */ 1150 1151 static unsigned char * 1152 som_reloc_call (bfd *abfd, 1153 unsigned char *p, 1154 unsigned int *subspace_reloc_sizep, 1155 arelent *bfd_reloc, 1156 int sym_num, 1157 struct reloc_queue *queue) 1158 { 1159 int arg_bits = HPPA_R_ARG_RELOC (bfd_reloc->addend); 1160 int rtn_bits = arg_bits & 0x3; 1161 int type, done = 0; 1162 1163 /* You'll never believe all this is necessary to handle relocations 1164 for function calls. Having to compute and pack the argument 1165 relocation bits is the real nightmare. 1166 1167 If you're interested in how this works, just forget it. You really 1168 do not want to know about this braindamage. */ 1169 1170 /* First see if this can be done with a "simple" relocation. Simple 1171 relocations have a symbol number < 0x100 and have simple encodings 1172 of argument relocations. */ 1173 1174 if (sym_num < 0x100) 1175 { 1176 switch (arg_bits) 1177 { 1178 case 0: 1179 case 1: 1180 type = 0; 1181 break; 1182 case 1 << 8: 1183 case 1 << 8 | 1: 1184 type = 1; 1185 break; 1186 case 1 << 8 | 1 << 6: 1187 case 1 << 8 | 1 << 6 | 1: 1188 type = 2; 1189 break; 1190 case 1 << 8 | 1 << 6 | 1 << 4: 1191 case 1 << 8 | 1 << 6 | 1 << 4 | 1: 1192 type = 3; 1193 break; 1194 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2: 1195 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2 | 1: 1196 type = 4; 1197 break; 1198 default: 1199 /* Not one of the easy encodings. This will have to be 1200 handled by the more complex code below. */ 1201 type = -1; 1202 break; 1203 } 1204 if (type != -1) 1205 { 1206 /* Account for the return value too. */ 1207 if (rtn_bits) 1208 type += 5; 1209 1210 /* Emit a 2 byte relocation. Then see if it can be handled 1211 with a relocation which is already in the relocation queue. */ 1212 bfd_put_8 (abfd, bfd_reloc->howto->type + type, p); 1213 bfd_put_8 (abfd, sym_num, p + 1); 1214 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue); 1215 done = 1; 1216 } 1217 } 1218 1219 /* If this could not be handled with a simple relocation, then do a hard 1220 one. Hard relocations occur if the symbol number was too high or if 1221 the encoding of argument relocation bits is too complex. */ 1222 if (! done) 1223 { 1224 /* Don't ask about these magic sequences. I took them straight 1225 from gas-1.36 which took them from the a.out man page. */ 1226 type = rtn_bits; 1227 if ((arg_bits >> 6 & 0xf) == 0xe) 1228 type += 9 * 40; 1229 else 1230 type += (3 * (arg_bits >> 8 & 3) + (arg_bits >> 6 & 3)) * 40; 1231 if ((arg_bits >> 2 & 0xf) == 0xe) 1232 type += 9 * 4; 1233 else 1234 type += (3 * (arg_bits >> 4 & 3) + (arg_bits >> 2 & 3)) * 4; 1235 1236 /* Output the first two bytes of the relocation. These describe 1237 the length of the relocation and encoding style. */ 1238 bfd_put_8 (abfd, bfd_reloc->howto->type + 10 1239 + 2 * (sym_num >= 0x100) + (type >= 0x100), 1240 p); 1241 bfd_put_8 (abfd, type, p + 1); 1242 1243 /* Now output the symbol index and see if this bizarre relocation 1244 just happened to be in the relocation queue. */ 1245 if (sym_num < 0x100) 1246 { 1247 bfd_put_8 (abfd, sym_num, p + 2); 1248 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue); 1249 } 1250 else 1251 { 1252 bfd_put_8 (abfd, sym_num >> 16, p + 2); 1253 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3); 1254 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue); 1255 } 1256 } 1257 return p; 1258 } 1259 1260 /* Return the logarithm of X, base 2, considering X unsigned, 1261 if X is a power of 2. Otherwise, returns -1. */ 1262 1263 static int 1264 exact_log2 (unsigned int x) 1265 { 1266 int log = 0; 1267 1268 /* Test for 0 or a power of 2. */ 1269 if (x == 0 || x != (x & -x)) 1270 return -1; 1271 1272 while ((x >>= 1) != 0) 1273 log++; 1274 return log; 1275 } 1276 1277 static bfd_reloc_status_type 1278 hppa_som_reloc (bfd *abfd ATTRIBUTE_UNUSED, 1279 arelent *reloc_entry, 1280 asymbol *symbol_in ATTRIBUTE_UNUSED, 1281 void *data ATTRIBUTE_UNUSED, 1282 asection *input_section, 1283 bfd *output_bfd, 1284 char **error_message ATTRIBUTE_UNUSED) 1285 { 1286 if (output_bfd) 1287 reloc_entry->address += input_section->output_offset; 1288 1289 return bfd_reloc_ok; 1290 } 1291 1292 /* Given a generic HPPA relocation type, the instruction format, 1293 and a field selector, return one or more appropriate SOM relocations. */ 1294 1295 int ** 1296 hppa_som_gen_reloc_type (bfd *abfd, 1297 int base_type, 1298 int format, 1299 enum hppa_reloc_field_selector_type_alt field, 1300 int sym_diff, 1301 asymbol *sym) 1302 { 1303 int *final_type, **final_types; 1304 1305 final_types = bfd_alloc (abfd, (bfd_size_type) sizeof (int *) * 6); 1306 final_type = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1307 if (!final_types || !final_type) 1308 return NULL; 1309 1310 /* The field selector may require additional relocations to be 1311 generated. It's impossible to know at this moment if additional 1312 relocations will be needed, so we make them. The code to actually 1313 write the relocation/fixup stream is responsible for removing 1314 any redundant relocations. */ 1315 switch (field) 1316 { 1317 case e_fsel: 1318 case e_psel: 1319 case e_lpsel: 1320 case e_rpsel: 1321 final_types[0] = final_type; 1322 final_types[1] = NULL; 1323 final_types[2] = NULL; 1324 *final_type = base_type; 1325 break; 1326 1327 case e_tsel: 1328 case e_ltsel: 1329 case e_rtsel: 1330 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1331 if (!final_types[0]) 1332 return NULL; 1333 if (field == e_tsel) 1334 *final_types[0] = R_FSEL; 1335 else if (field == e_ltsel) 1336 *final_types[0] = R_LSEL; 1337 else 1338 *final_types[0] = R_RSEL; 1339 final_types[1] = final_type; 1340 final_types[2] = NULL; 1341 *final_type = base_type; 1342 break; 1343 1344 case e_lssel: 1345 case e_rssel: 1346 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1347 if (!final_types[0]) 1348 return NULL; 1349 *final_types[0] = R_S_MODE; 1350 final_types[1] = final_type; 1351 final_types[2] = NULL; 1352 *final_type = base_type; 1353 break; 1354 1355 case e_lsel: 1356 case e_rsel: 1357 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1358 if (!final_types[0]) 1359 return NULL; 1360 *final_types[0] = R_N_MODE; 1361 final_types[1] = final_type; 1362 final_types[2] = NULL; 1363 *final_type = base_type; 1364 break; 1365 1366 case e_ldsel: 1367 case e_rdsel: 1368 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1369 if (!final_types[0]) 1370 return NULL; 1371 *final_types[0] = R_D_MODE; 1372 final_types[1] = final_type; 1373 final_types[2] = NULL; 1374 *final_type = base_type; 1375 break; 1376 1377 case e_lrsel: 1378 case e_rrsel: 1379 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1380 if (!final_types[0]) 1381 return NULL; 1382 *final_types[0] = R_R_MODE; 1383 final_types[1] = final_type; 1384 final_types[2] = NULL; 1385 *final_type = base_type; 1386 break; 1387 1388 case e_nsel: 1389 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1390 if (!final_types[0]) 1391 return NULL; 1392 *final_types[0] = R_N1SEL; 1393 final_types[1] = final_type; 1394 final_types[2] = NULL; 1395 *final_type = base_type; 1396 break; 1397 1398 case e_nlsel: 1399 case e_nlrsel: 1400 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1401 if (!final_types[0]) 1402 return NULL; 1403 *final_types[0] = R_N0SEL; 1404 final_types[1] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1405 if (!final_types[1]) 1406 return NULL; 1407 if (field == e_nlsel) 1408 *final_types[1] = R_N_MODE; 1409 else 1410 *final_types[1] = R_R_MODE; 1411 final_types[2] = final_type; 1412 final_types[3] = NULL; 1413 *final_type = base_type; 1414 break; 1415 1416 /* FIXME: These two field selectors are not currently supported. */ 1417 case e_ltpsel: 1418 case e_rtpsel: 1419 abort (); 1420 } 1421 1422 switch (base_type) 1423 { 1424 case R_HPPA: 1425 /* The difference of two symbols needs *very* special handling. */ 1426 if (sym_diff) 1427 { 1428 size_t amt = sizeof (int); 1429 1430 final_types[0] = bfd_alloc (abfd, amt); 1431 final_types[1] = bfd_alloc (abfd, amt); 1432 final_types[2] = bfd_alloc (abfd, amt); 1433 final_types[3] = bfd_alloc (abfd, amt); 1434 if (!final_types[0] || !final_types[1] || !final_types[2]) 1435 return NULL; 1436 if (field == e_fsel) 1437 *final_types[0] = R_FSEL; 1438 else if (field == e_rsel) 1439 *final_types[0] = R_RSEL; 1440 else if (field == e_lsel) 1441 *final_types[0] = R_LSEL; 1442 *final_types[1] = R_COMP2; 1443 *final_types[2] = R_COMP2; 1444 *final_types[3] = R_COMP1; 1445 final_types[4] = final_type; 1446 if (format == 32) 1447 *final_types[4] = R_DATA_EXPR; 1448 else 1449 *final_types[4] = R_CODE_EXPR; 1450 final_types[5] = NULL; 1451 break; 1452 } 1453 /* PLABELs get their own relocation type. */ 1454 else if (field == e_psel 1455 || field == e_lpsel 1456 || field == e_rpsel) 1457 { 1458 /* A PLABEL relocation that has a size of 32 bits must 1459 be a R_DATA_PLABEL. All others are R_CODE_PLABELs. */ 1460 if (format == 32) 1461 *final_type = R_DATA_PLABEL; 1462 else 1463 *final_type = R_CODE_PLABEL; 1464 } 1465 /* PIC stuff. */ 1466 else if (field == e_tsel 1467 || field == e_ltsel 1468 || field == e_rtsel) 1469 *final_type = R_DLT_REL; 1470 /* A relocation in the data space is always a full 32bits. */ 1471 else if (format == 32) 1472 { 1473 *final_type = R_DATA_ONE_SYMBOL; 1474 1475 /* If there's no SOM symbol type associated with this BFD 1476 symbol, then set the symbol type to ST_DATA. 1477 1478 Only do this if the type is going to default later when 1479 we write the object file. 1480 1481 This is done so that the linker never encounters an 1482 R_DATA_ONE_SYMBOL reloc involving an ST_CODE symbol. 1483 1484 This allows the compiler to generate exception handling 1485 tables. 1486 1487 Note that one day we may need to also emit BEGIN_BRTAB and 1488 END_BRTAB to prevent the linker from optimizing away insns 1489 in exception handling regions. */ 1490 if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN 1491 && (sym->flags & BSF_SECTION_SYM) == 0 1492 && (sym->flags & BSF_FUNCTION) == 0 1493 && ! bfd_is_com_section (sym->section)) 1494 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA; 1495 } 1496 break; 1497 1498 case R_HPPA_GOTOFF: 1499 /* More PLABEL special cases. */ 1500 if (field == e_psel 1501 || field == e_lpsel 1502 || field == e_rpsel) 1503 *final_type = R_DATA_PLABEL; 1504 else if (field == e_fsel && format == 32) 1505 *final_type = R_DATA_GPREL; 1506 break; 1507 1508 case R_HPPA_COMPLEX: 1509 /* The difference of two symbols needs *very* special handling. */ 1510 if (sym_diff) 1511 { 1512 size_t amt = sizeof (int); 1513 1514 final_types[0] = bfd_alloc (abfd, amt); 1515 final_types[1] = bfd_alloc (abfd, amt); 1516 final_types[2] = bfd_alloc (abfd, amt); 1517 final_types[3] = bfd_alloc (abfd, amt); 1518 if (!final_types[0] || !final_types[1] || !final_types[2]) 1519 return NULL; 1520 if (field == e_fsel) 1521 *final_types[0] = R_FSEL; 1522 else if (field == e_rsel) 1523 *final_types[0] = R_RSEL; 1524 else if (field == e_lsel) 1525 *final_types[0] = R_LSEL; 1526 *final_types[1] = R_COMP2; 1527 *final_types[2] = R_COMP2; 1528 *final_types[3] = R_COMP1; 1529 final_types[4] = final_type; 1530 if (format == 32) 1531 *final_types[4] = R_DATA_EXPR; 1532 else 1533 *final_types[4] = R_CODE_EXPR; 1534 final_types[5] = NULL; 1535 break; 1536 } 1537 else 1538 break; 1539 1540 case R_HPPA_NONE: 1541 case R_HPPA_ABS_CALL: 1542 /* Right now we can default all these. */ 1543 break; 1544 1545 case R_HPPA_PCREL_CALL: 1546 { 1547 #ifndef NO_PCREL_MODES 1548 /* If we have short and long pcrel modes, then generate the proper 1549 mode selector, then the pcrel relocation. Redundant selectors 1550 will be eliminated as the relocs are sized and emitted. */ 1551 size_t amt = sizeof (int); 1552 1553 final_types[0] = bfd_alloc (abfd, amt); 1554 if (!final_types[0]) 1555 return NULL; 1556 if (format == 17) 1557 *final_types[0] = R_SHORT_PCREL_MODE; 1558 else 1559 *final_types[0] = R_LONG_PCREL_MODE; 1560 final_types[1] = final_type; 1561 final_types[2] = NULL; 1562 *final_type = base_type; 1563 #endif 1564 break; 1565 } 1566 } 1567 return final_types; 1568 } 1569 1570 /* Return the address of the correct entry in the PA SOM relocation 1571 howto table. */ 1572 1573 static reloc_howto_type * 1574 som_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1575 bfd_reloc_code_real_type code) 1576 { 1577 if ((int) code < (int) R_NO_RELOCATION + 255) 1578 { 1579 BFD_ASSERT ((int) som_hppa_howto_table[(int) code].type == (int) code); 1580 return &som_hppa_howto_table[(int) code]; 1581 } 1582 1583 return NULL; 1584 } 1585 1586 static reloc_howto_type * 1587 som_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1588 const char *r_name) 1589 { 1590 unsigned int i; 1591 1592 for (i = 0; 1593 i < sizeof (som_hppa_howto_table) / sizeof (som_hppa_howto_table[0]); 1594 i++) 1595 if (som_hppa_howto_table[i].name != NULL 1596 && strcasecmp (som_hppa_howto_table[i].name, r_name) == 0) 1597 return &som_hppa_howto_table[i]; 1598 1599 return NULL; 1600 } 1601 1602 static void 1603 som_swap_clock_in (struct som_external_clock *src, 1604 struct som_clock *dst) 1605 { 1606 dst->secs = bfd_getb32 (src->secs); 1607 dst->nanosecs = bfd_getb32 (src->nanosecs); 1608 } 1609 1610 static void 1611 som_swap_clock_out (struct som_clock *src, 1612 struct som_external_clock *dst) 1613 { 1614 bfd_putb32 (src->secs, dst->secs); 1615 bfd_putb32 (src->nanosecs, dst->nanosecs); 1616 } 1617 1618 static void 1619 som_swap_header_in (struct som_external_header *src, 1620 struct som_header *dst) 1621 { 1622 dst->system_id = bfd_getb16 (src->system_id); 1623 dst->a_magic = bfd_getb16 (src->a_magic); 1624 dst->version_id = bfd_getb32 (src->version_id); 1625 som_swap_clock_in (&src->file_time, &dst->file_time); 1626 dst->entry_space = bfd_getb32 (src->entry_space); 1627 dst->entry_subspace = bfd_getb32 (src->entry_subspace); 1628 dst->entry_offset = bfd_getb32 (src->entry_offset); 1629 dst->aux_header_location = bfd_getb32 (src->aux_header_location); 1630 dst->aux_header_size = bfd_getb32 (src->aux_header_size); 1631 dst->som_length = bfd_getb32 (src->som_length); 1632 dst->presumed_dp = bfd_getb32 (src->presumed_dp); 1633 dst->space_location = bfd_getb32 (src->space_location); 1634 dst->space_total = bfd_getb32 (src->space_total); 1635 dst->subspace_location = bfd_getb32 (src->subspace_location); 1636 dst->subspace_total = bfd_getb32 (src->subspace_total); 1637 dst->loader_fixup_location = bfd_getb32 (src->loader_fixup_location); 1638 dst->loader_fixup_total = bfd_getb32 (src->loader_fixup_total); 1639 dst->space_strings_location = bfd_getb32 (src->space_strings_location); 1640 dst->space_strings_size = bfd_getb32 (src->space_strings_size); 1641 dst->init_array_location = bfd_getb32 (src->init_array_location); 1642 dst->init_array_total = bfd_getb32 (src->init_array_total); 1643 dst->compiler_location = bfd_getb32 (src->compiler_location); 1644 dst->compiler_total = bfd_getb32 (src->compiler_total); 1645 dst->symbol_location = bfd_getb32 (src->symbol_location); 1646 dst->symbol_total = bfd_getb32 (src->symbol_total); 1647 dst->fixup_request_location = bfd_getb32 (src->fixup_request_location); 1648 dst->fixup_request_total = bfd_getb32 (src->fixup_request_total); 1649 dst->symbol_strings_location = bfd_getb32 (src->symbol_strings_location); 1650 dst->symbol_strings_size = bfd_getb32 (src->symbol_strings_size); 1651 dst->unloadable_sp_location = bfd_getb32 (src->unloadable_sp_location); 1652 dst->unloadable_sp_size = bfd_getb32 (src->unloadable_sp_size); 1653 dst->checksum = bfd_getb32 (src->checksum); 1654 } 1655 1656 static void 1657 som_swap_header_out (struct som_header *src, 1658 struct som_external_header *dst) 1659 { 1660 bfd_putb16 (src->system_id, dst->system_id); 1661 bfd_putb16 (src->a_magic, dst->a_magic); 1662 bfd_putb32 (src->version_id, dst->version_id); 1663 som_swap_clock_out (&src->file_time, &dst->file_time); 1664 bfd_putb32 (src->entry_space, dst->entry_space); 1665 bfd_putb32 (src->entry_subspace, dst->entry_subspace); 1666 bfd_putb32 (src->entry_offset, dst->entry_offset); 1667 bfd_putb32 (src->aux_header_location, dst->aux_header_location); 1668 bfd_putb32 (src->aux_header_size, dst->aux_header_size); 1669 bfd_putb32 (src->som_length, dst->som_length); 1670 bfd_putb32 (src->presumed_dp, dst->presumed_dp); 1671 bfd_putb32 (src->space_location, dst->space_location); 1672 bfd_putb32 (src->space_total, dst->space_total); 1673 bfd_putb32 (src->subspace_location, dst->subspace_location); 1674 bfd_putb32 (src->subspace_total, dst->subspace_total); 1675 bfd_putb32 (src->loader_fixup_location, dst->loader_fixup_location); 1676 bfd_putb32 (src->loader_fixup_total, dst->loader_fixup_total); 1677 bfd_putb32 (src->space_strings_location, dst->space_strings_location); 1678 bfd_putb32 (src->space_strings_size, dst->space_strings_size); 1679 bfd_putb32 (src->init_array_location, dst->init_array_location); 1680 bfd_putb32 (src->init_array_total, dst->init_array_total); 1681 bfd_putb32 (src->compiler_location, dst->compiler_location); 1682 bfd_putb32 (src->compiler_total, dst->compiler_total); 1683 bfd_putb32 (src->symbol_location, dst->symbol_location); 1684 bfd_putb32 (src->symbol_total, dst->symbol_total); 1685 bfd_putb32 (src->fixup_request_location, dst->fixup_request_location); 1686 bfd_putb32 (src->fixup_request_total, dst->fixup_request_total); 1687 bfd_putb32 (src->symbol_strings_location, dst->symbol_strings_location); 1688 bfd_putb32 (src->symbol_strings_size, dst->symbol_strings_size); 1689 bfd_putb32 (src->unloadable_sp_location, dst->unloadable_sp_location); 1690 bfd_putb32 (src->unloadable_sp_size, dst->unloadable_sp_size); 1691 bfd_putb32 (src->checksum, dst->checksum); 1692 } 1693 1694 static void 1695 som_swap_space_dictionary_in (struct som_external_space_dictionary_record *src, 1696 struct som_space_dictionary_record *dst) 1697 { 1698 unsigned int flags; 1699 1700 dst->name = bfd_getb32 (src->name); 1701 flags = bfd_getb32 (src->flags); 1702 dst->is_loadable = (flags & SOM_SPACE_IS_LOADABLE) != 0; 1703 dst->is_defined = (flags & SOM_SPACE_IS_DEFINED) != 0; 1704 dst->is_private = (flags & SOM_SPACE_IS_PRIVATE) != 0; 1705 dst->has_intermediate_code = (flags & SOM_SPACE_HAS_INTERMEDIATE_CODE) != 0; 1706 dst->is_tspecific = (flags & SOM_SPACE_IS_TSPECIFIC) != 0; 1707 dst->reserved = 0; 1708 dst->sort_key = (flags >> SOM_SPACE_SORT_KEY_SH) & SOM_SPACE_SORT_KEY_MASK; 1709 dst->reserved2 = 0; 1710 dst->space_number = bfd_getb32 (src->space_number); 1711 dst->subspace_index = bfd_getb32 (src->subspace_index); 1712 dst->subspace_quantity = bfd_getb32 (src->subspace_quantity); 1713 dst->loader_fix_index = bfd_getb32 (src->loader_fix_index); 1714 dst->loader_fix_quantity = bfd_getb32 (src->loader_fix_quantity); 1715 dst->init_pointer_index = bfd_getb32 (src->init_pointer_index); 1716 dst->init_pointer_quantity = bfd_getb32 (src->init_pointer_quantity); 1717 } 1718 1719 static void 1720 som_swap_space_dictionary_out (struct som_space_dictionary_record *src, 1721 struct som_external_space_dictionary_record *dst) 1722 { 1723 unsigned int flags; 1724 1725 bfd_putb32 (src->name, dst->name); 1726 1727 flags = 0; 1728 if (src->is_loadable) 1729 flags |= SOM_SPACE_IS_LOADABLE; 1730 if (src->is_defined) 1731 flags |= SOM_SPACE_IS_DEFINED; 1732 if (src->is_private) 1733 flags |= SOM_SPACE_IS_PRIVATE; 1734 if (src->has_intermediate_code) 1735 flags |= SOM_SPACE_HAS_INTERMEDIATE_CODE; 1736 if (src->is_tspecific) 1737 flags |= SOM_SPACE_IS_TSPECIFIC; 1738 flags |= (src->sort_key & SOM_SPACE_SORT_KEY_MASK) << SOM_SPACE_SORT_KEY_SH; 1739 bfd_putb32 (flags, dst->flags); 1740 bfd_putb32 (src->space_number, dst->space_number); 1741 bfd_putb32 (src->subspace_index, dst->subspace_index); 1742 bfd_putb32 (src->subspace_quantity, dst->subspace_quantity); 1743 bfd_putb32 (src->loader_fix_index, dst->loader_fix_index); 1744 bfd_putb32 (src->loader_fix_quantity, dst->loader_fix_quantity); 1745 bfd_putb32 (src->init_pointer_index, dst->init_pointer_index); 1746 bfd_putb32 (src->init_pointer_quantity, dst->init_pointer_quantity); 1747 } 1748 1749 static void 1750 som_swap_subspace_dictionary_in 1751 (struct som_external_subspace_dictionary_record *src, 1752 struct som_subspace_dictionary_record *dst) 1753 { 1754 unsigned int flags; 1755 dst->space_index = bfd_getb32 (src->space_index); 1756 flags = bfd_getb32 (src->flags); 1757 dst->access_control_bits = (flags >> SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH) 1758 & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK; 1759 dst->memory_resident = (flags & SOM_SUBSPACE_MEMORY_RESIDENT) != 0; 1760 dst->dup_common = (flags & SOM_SUBSPACE_DUP_COMMON) != 0; 1761 dst->is_common = (flags & SOM_SUBSPACE_IS_COMMON) != 0; 1762 dst->is_loadable = (flags & SOM_SUBSPACE_IS_LOADABLE) != 0; 1763 dst->quadrant = (flags >> SOM_SUBSPACE_QUADRANT_SH) 1764 & SOM_SUBSPACE_QUADRANT_MASK; 1765 dst->initially_frozen = (flags & SOM_SUBSPACE_INITIALLY_FROZEN) != 0; 1766 dst->is_first = (flags & SOM_SUBSPACE_IS_FIRST) != 0; 1767 dst->code_only = (flags & SOM_SUBSPACE_CODE_ONLY) != 0; 1768 dst->sort_key = (flags >> SOM_SUBSPACE_SORT_KEY_SH) 1769 & SOM_SUBSPACE_SORT_KEY_MASK; 1770 dst->replicate_init = (flags & SOM_SUBSPACE_REPLICATE_INIT) != 0; 1771 dst->continuation = (flags & SOM_SUBSPACE_CONTINUATION) != 0; 1772 dst->is_tspecific = (flags & SOM_SUBSPACE_IS_TSPECIFIC) != 0; 1773 dst->is_comdat = (flags & SOM_SUBSPACE_IS_COMDAT) != 0; 1774 dst->reserved = 0; 1775 dst->file_loc_init_value = bfd_getb32 (src->file_loc_init_value); 1776 dst->initialization_length = bfd_getb32 (src->initialization_length); 1777 dst->subspace_start = bfd_getb32 (src->subspace_start); 1778 dst->subspace_length = bfd_getb32 (src->subspace_length); 1779 dst->alignment = bfd_getb32 (src->alignment); 1780 dst->name = bfd_getb32 (src->name); 1781 dst->fixup_request_index = bfd_getb32 (src->fixup_request_index); 1782 dst->fixup_request_quantity = bfd_getb32 (src->fixup_request_quantity); 1783 } 1784 1785 static void 1786 som_swap_subspace_dictionary_record_out 1787 (struct som_subspace_dictionary_record *src, 1788 struct som_external_subspace_dictionary_record *dst) 1789 { 1790 unsigned int flags; 1791 1792 bfd_putb32 (src->space_index, dst->space_index); 1793 flags = (src->access_control_bits & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK) 1794 << SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH; 1795 if (src->memory_resident) 1796 flags |= SOM_SUBSPACE_MEMORY_RESIDENT; 1797 if (src->dup_common) 1798 flags |= SOM_SUBSPACE_DUP_COMMON; 1799 if (src->is_common) 1800 flags |= SOM_SUBSPACE_IS_COMMON; 1801 if (src->is_loadable) 1802 flags |= SOM_SUBSPACE_IS_LOADABLE; 1803 flags |= (src->quadrant & SOM_SUBSPACE_QUADRANT_MASK) 1804 << SOM_SUBSPACE_QUADRANT_SH; 1805 if (src->initially_frozen) 1806 flags |= SOM_SUBSPACE_INITIALLY_FROZEN; 1807 if (src->is_first) 1808 flags |= SOM_SUBSPACE_IS_FIRST; 1809 if (src->code_only) 1810 flags |= SOM_SUBSPACE_CODE_ONLY; 1811 flags |= (src->sort_key & SOM_SUBSPACE_SORT_KEY_MASK) 1812 << SOM_SUBSPACE_SORT_KEY_SH; 1813 if (src->replicate_init) 1814 flags |= SOM_SUBSPACE_REPLICATE_INIT; 1815 if (src->continuation) 1816 flags |= SOM_SUBSPACE_CONTINUATION; 1817 if (src->is_tspecific) 1818 flags |= SOM_SUBSPACE_IS_TSPECIFIC; 1819 if (src->is_comdat) 1820 flags |= SOM_SUBSPACE_IS_COMDAT; 1821 bfd_putb32 (flags, dst->flags); 1822 bfd_putb32 (src->file_loc_init_value, dst->file_loc_init_value); 1823 bfd_putb32 (src->initialization_length, dst->initialization_length); 1824 bfd_putb32 (src->subspace_start, dst->subspace_start); 1825 bfd_putb32 (src->subspace_length, dst->subspace_length); 1826 bfd_putb32 (src->alignment, dst->alignment); 1827 bfd_putb32 (src->name, dst->name); 1828 bfd_putb32 (src->fixup_request_index, dst->fixup_request_index); 1829 bfd_putb32 (src->fixup_request_quantity, dst->fixup_request_quantity); 1830 } 1831 1832 static void 1833 som_swap_aux_id_in (struct som_external_aux_id *src, 1834 struct som_aux_id *dst) 1835 { 1836 unsigned int flags = bfd_getb32 (src->flags); 1837 1838 dst->mandatory = (flags & SOM_AUX_ID_MANDATORY) != 0; 1839 dst->copy = (flags & SOM_AUX_ID_COPY) != 0; 1840 dst->append = (flags & SOM_AUX_ID_APPEND) != 0; 1841 dst->ignore = (flags & SOM_AUX_ID_IGNORE) != 0; 1842 dst->type = (flags >> SOM_AUX_ID_TYPE_SH) & SOM_AUX_ID_TYPE_MASK; 1843 dst->length = bfd_getb32 (src->length); 1844 } 1845 1846 static void 1847 som_swap_aux_id_out (struct som_aux_id *src, 1848 struct som_external_aux_id *dst) 1849 { 1850 unsigned int flags = 0; 1851 1852 if (src->mandatory) 1853 flags |= SOM_AUX_ID_MANDATORY; 1854 if (src->copy) 1855 flags |= SOM_AUX_ID_COPY; 1856 if (src->append) 1857 flags |= SOM_AUX_ID_APPEND; 1858 if (src->ignore) 1859 flags |= SOM_AUX_ID_IGNORE; 1860 flags |= (src->type & SOM_AUX_ID_TYPE_MASK) << SOM_AUX_ID_TYPE_SH; 1861 bfd_putb32 (flags, dst->flags); 1862 bfd_putb32 (src->length, dst->length); 1863 } 1864 1865 static void 1866 som_swap_string_auxhdr_out (struct som_string_auxhdr *src, 1867 struct som_external_string_auxhdr *dst) 1868 { 1869 som_swap_aux_id_out (&src->header_id, &dst->header_id); 1870 bfd_putb32 (src->string_length, dst->string_length); 1871 } 1872 1873 static void 1874 som_swap_compilation_unit_out (struct som_compilation_unit *src, 1875 struct som_external_compilation_unit *dst) 1876 { 1877 bfd_putb32 (src->name.strx, dst->name); 1878 bfd_putb32 (src->language_name.strx, dst->language_name); 1879 bfd_putb32 (src->product_id.strx, dst->product_id); 1880 bfd_putb32 (src->version_id.strx, dst->version_id); 1881 bfd_putb32 (src->flags, dst->flags); 1882 som_swap_clock_out (&src->compile_time, &dst->compile_time); 1883 som_swap_clock_out (&src->source_time, &dst->source_time); 1884 } 1885 1886 static void 1887 som_swap_exec_auxhdr_in (struct som_external_exec_auxhdr *src, 1888 struct som_exec_auxhdr *dst) 1889 { 1890 som_swap_aux_id_in (&src->som_auxhdr, &dst->som_auxhdr); 1891 dst->exec_tsize = bfd_getb32 (src->exec_tsize); 1892 dst->exec_tmem = bfd_getb32 (src->exec_tmem); 1893 dst->exec_tfile = bfd_getb32 (src->exec_tfile); 1894 dst->exec_dsize = bfd_getb32 (src->exec_dsize); 1895 dst->exec_dmem = bfd_getb32 (src->exec_dmem); 1896 dst->exec_dfile = bfd_getb32 (src->exec_dfile); 1897 dst->exec_bsize = bfd_getb32 (src->exec_bsize); 1898 dst->exec_entry = bfd_getb32 (src->exec_entry); 1899 dst->exec_flags = bfd_getb32 (src->exec_flags); 1900 dst->exec_bfill = bfd_getb32 (src->exec_bfill); 1901 } 1902 1903 static void 1904 som_swap_exec_auxhdr_out (struct som_exec_auxhdr *src, 1905 struct som_external_exec_auxhdr *dst) 1906 { 1907 som_swap_aux_id_out (&src->som_auxhdr, &dst->som_auxhdr); 1908 bfd_putb32 (src->exec_tsize, dst->exec_tsize); 1909 bfd_putb32 (src->exec_tmem, dst->exec_tmem); 1910 bfd_putb32 (src->exec_tfile, dst->exec_tfile); 1911 bfd_putb32 (src->exec_dsize, dst->exec_dsize); 1912 bfd_putb32 (src->exec_dmem, dst->exec_dmem); 1913 bfd_putb32 (src->exec_dfile, dst->exec_dfile); 1914 bfd_putb32 (src->exec_bsize, dst->exec_bsize); 1915 bfd_putb32 (src->exec_entry, dst->exec_entry); 1916 bfd_putb32 (src->exec_flags, dst->exec_flags); 1917 bfd_putb32 (src->exec_bfill, dst->exec_bfill); 1918 } 1919 1920 static void 1921 som_swap_lst_header_in (struct som_external_lst_header *src, 1922 struct som_lst_header *dst) 1923 { 1924 dst->system_id = bfd_getb16 (src->system_id); 1925 dst->a_magic = bfd_getb16 (src->a_magic); 1926 dst->version_id = bfd_getb32 (src->version_id); 1927 som_swap_clock_in (&src->file_time, &dst->file_time); 1928 dst->hash_loc = bfd_getb32 (src->hash_loc); 1929 dst->hash_size = bfd_getb32 (src->hash_size); 1930 dst->module_count = bfd_getb32 (src->module_count); 1931 dst->module_limit = bfd_getb32 (src->module_limit); 1932 dst->dir_loc = bfd_getb32 (src->dir_loc); 1933 dst->export_loc = bfd_getb32 (src->export_loc); 1934 dst->export_count = bfd_getb32 (src->export_count); 1935 dst->import_loc = bfd_getb32 (src->import_loc); 1936 dst->aux_loc = bfd_getb32 (src->aux_loc); 1937 dst->aux_size = bfd_getb32 (src->aux_size); 1938 dst->string_loc = bfd_getb32 (src->string_loc); 1939 dst->string_size = bfd_getb32 (src->string_size); 1940 dst->free_list = bfd_getb32 (src->free_list); 1941 dst->file_end = bfd_getb32 (src->file_end); 1942 dst->checksum = bfd_getb32 (src->checksum); 1943 } 1944 1945 /* Perform some initialization for an object. Save results of this 1946 initialization in the BFD. */ 1947 1948 static bfd_cleanup 1949 som_object_setup (bfd *abfd, 1950 struct som_header *file_hdrp, 1951 struct som_exec_auxhdr *aux_hdrp, 1952 unsigned long current_offset) 1953 { 1954 asection *section; 1955 1956 /* som_mkobject will set bfd_error if som_mkobject fails. */ 1957 if (! som_mkobject (abfd)) 1958 return NULL; 1959 1960 /* Set BFD flags based on what information is available in the SOM. */ 1961 abfd->flags = BFD_NO_FLAGS; 1962 if (file_hdrp->symbol_total) 1963 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; 1964 1965 switch (file_hdrp->a_magic) 1966 { 1967 case DEMAND_MAGIC: 1968 abfd->flags |= (D_PAGED | WP_TEXT | EXEC_P); 1969 break; 1970 case SHARE_MAGIC: 1971 abfd->flags |= (WP_TEXT | EXEC_P); 1972 break; 1973 case EXEC_MAGIC: 1974 abfd->flags |= (EXEC_P); 1975 break; 1976 case RELOC_MAGIC: 1977 abfd->flags |= HAS_RELOC; 1978 break; 1979 #ifdef SHL_MAGIC 1980 case SHL_MAGIC: 1981 #endif 1982 #ifdef DL_MAGIC 1983 case DL_MAGIC: 1984 #endif 1985 abfd->flags |= DYNAMIC; 1986 break; 1987 1988 default: 1989 break; 1990 } 1991 1992 /* Save the auxiliary header. */ 1993 obj_som_exec_hdr (abfd) = aux_hdrp; 1994 1995 /* Allocate space to hold the saved exec header information. */ 1996 obj_som_exec_data (abfd) = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_exec_data)); 1997 if (obj_som_exec_data (abfd) == NULL) 1998 return NULL; 1999 2000 /* The braindamaged OSF1 linker switched exec_flags and exec_entry! 2001 2002 We used to identify OSF1 binaries based on NEW_VERSION_ID, but 2003 apparently the latest HPUX linker is using NEW_VERSION_ID now. 2004 2005 It's about time, OSF has used the new id since at least 1992; 2006 HPUX didn't start till nearly 1995!. 2007 2008 The new approach examines the entry field for an executable. If 2009 it is not 4-byte aligned then it's not a proper code address and 2010 we guess it's really the executable flags. For a main program, 2011 we also consider zero to be indicative of a buggy linker, since 2012 that is not a valid entry point. The entry point for a shared 2013 library, however, can be zero so we do not consider that to be 2014 indicative of a buggy linker. */ 2015 if (aux_hdrp) 2016 { 2017 int found = 0; 2018 2019 for (section = abfd->sections; section; section = section->next) 2020 { 2021 bfd_vma entry; 2022 2023 if ((section->flags & SEC_CODE) == 0) 2024 continue; 2025 entry = aux_hdrp->exec_entry + aux_hdrp->exec_tmem; 2026 if (entry >= section->vma 2027 && entry < section->vma + section->size) 2028 found = 1; 2029 } 2030 if ((aux_hdrp->exec_entry == 0 && !(abfd->flags & DYNAMIC)) 2031 || (aux_hdrp->exec_entry & 0x3) != 0 2032 || ! found) 2033 { 2034 abfd->start_address = aux_hdrp->exec_flags; 2035 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_entry; 2036 } 2037 else 2038 { 2039 abfd->start_address = aux_hdrp->exec_entry + current_offset; 2040 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_flags; 2041 } 2042 } 2043 2044 obj_som_exec_data (abfd)->version_id = file_hdrp->version_id; 2045 2046 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, pa10); 2047 abfd->symcount = file_hdrp->symbol_total; 2048 2049 /* Initialize the saved symbol table and string table to NULL. 2050 Save important offsets and sizes from the SOM header into 2051 the BFD. */ 2052 obj_som_stringtab (abfd) = NULL; 2053 obj_som_symtab (abfd) = NULL; 2054 obj_som_sorted_syms (abfd) = NULL; 2055 obj_som_stringtab_size (abfd) = file_hdrp->symbol_strings_size; 2056 obj_som_sym_filepos (abfd) = file_hdrp->symbol_location + current_offset; 2057 obj_som_str_filepos (abfd) = (file_hdrp->symbol_strings_location 2058 + current_offset); 2059 obj_som_reloc_filepos (abfd) = (file_hdrp->fixup_request_location 2060 + current_offset); 2061 obj_som_exec_data (abfd)->system_id = file_hdrp->system_id; 2062 2063 return _bfd_no_cleanup; 2064 } 2065 2066 /* Convert all of the space and subspace info into BFD sections. Each space 2067 contains a number of subspaces, which in turn describe the mapping between 2068 regions of the exec file, and the address space that the program runs in. 2069 BFD sections which correspond to spaces will overlap the sections for the 2070 associated subspaces. */ 2071 2072 static bfd_boolean 2073 setup_sections (bfd *abfd, 2074 struct som_header *file_hdr, 2075 unsigned long current_offset) 2076 { 2077 char *space_strings = NULL; 2078 unsigned int space_index, i; 2079 unsigned int total_subspaces = 0; 2080 asection **subspace_sections = NULL; 2081 asection *section; 2082 size_t amt; 2083 2084 /* First, read in space names. */ 2085 amt = file_hdr->space_strings_size; 2086 if (amt == (size_t) -1) 2087 { 2088 bfd_set_error (bfd_error_no_memory); 2089 goto error_return; 2090 } 2091 if (bfd_seek (abfd, current_offset + file_hdr->space_strings_location, 2092 SEEK_SET) != 0) 2093 goto error_return; 2094 space_strings = (char *) _bfd_malloc_and_read (abfd, amt + 1, amt); 2095 if (space_strings == NULL) 2096 goto error_return; 2097 /* Make sure that the string table is NUL terminated. */ 2098 space_strings[amt] = 0; 2099 2100 /* Loop over all of the space dictionaries, building up sections. */ 2101 for (space_index = 0; space_index < file_hdr->space_total; space_index++) 2102 { 2103 struct som_space_dictionary_record space; 2104 struct som_external_space_dictionary_record ext_space; 2105 char *space_name; 2106 struct som_external_subspace_dictionary_record ext_subspace; 2107 struct som_subspace_dictionary_record subspace, save_subspace; 2108 unsigned int subspace_index; 2109 asection *space_asect; 2110 bfd_size_type space_size = 0; 2111 char *newname; 2112 2113 /* Read the space dictionary element. */ 2114 if (bfd_seek (abfd, 2115 (current_offset + file_hdr->space_location 2116 + space_index * sizeof (ext_space)), 2117 SEEK_SET) != 0) 2118 goto error_return; 2119 amt = sizeof ext_space; 2120 if (bfd_bread (&ext_space, amt, abfd) != amt) 2121 goto error_return; 2122 2123 som_swap_space_dictionary_in (&ext_space, &space); 2124 2125 /* Setup the space name string. */ 2126 if (space.name >= file_hdr->space_strings_size) 2127 goto error_return; 2128 2129 space_name = space.name + space_strings; 2130 2131 /* Make a section out of it. */ 2132 amt = strlen (space_name) + 1; 2133 newname = bfd_alloc (abfd, amt); 2134 if (!newname) 2135 goto error_return; 2136 strcpy (newname, space_name); 2137 2138 space_asect = bfd_make_section_anyway (abfd, newname); 2139 if (!space_asect) 2140 goto error_return; 2141 2142 if (space.is_loadable == 0) 2143 space_asect->flags |= SEC_DEBUGGING; 2144 2145 /* Set up all the attributes for the space. */ 2146 if (! bfd_som_set_section_attributes (space_asect, space.is_defined, 2147 space.is_private, space.sort_key, 2148 space.space_number)) 2149 goto error_return; 2150 2151 /* If the space has no subspaces, then we're done. */ 2152 if (space.subspace_quantity == 0) 2153 continue; 2154 2155 /* Now, read in the first subspace for this space. */ 2156 if (bfd_seek (abfd, 2157 (current_offset + file_hdr->subspace_location 2158 + space.subspace_index * sizeof ext_subspace), 2159 SEEK_SET) != 0) 2160 goto error_return; 2161 amt = sizeof ext_subspace; 2162 if (bfd_bread (&ext_subspace, amt, abfd) != amt) 2163 goto error_return; 2164 /* Seek back to the start of the subspaces for loop below. */ 2165 if (bfd_seek (abfd, 2166 (current_offset + file_hdr->subspace_location 2167 + space.subspace_index * sizeof ext_subspace), 2168 SEEK_SET) != 0) 2169 goto error_return; 2170 2171 som_swap_subspace_dictionary_in (&ext_subspace, &subspace); 2172 2173 /* Setup the start address and file loc from the first subspace 2174 record. */ 2175 space_asect->vma = subspace.subspace_start; 2176 space_asect->filepos = subspace.file_loc_init_value + current_offset; 2177 space_asect->alignment_power = exact_log2 (subspace.alignment); 2178 if (space_asect->alignment_power == (unsigned) -1) 2179 goto error_return; 2180 2181 /* Initialize save_subspace so we can reliably determine if this 2182 loop placed any useful values into it. */ 2183 memset (&save_subspace, 0, sizeof (save_subspace)); 2184 2185 /* Loop over the rest of the subspaces, building up more sections. */ 2186 for (subspace_index = 0; subspace_index < space.subspace_quantity; 2187 subspace_index++) 2188 { 2189 asection *subspace_asect; 2190 char *subspace_name; 2191 2192 /* Read in the next subspace. */ 2193 amt = sizeof ext_subspace; 2194 if (bfd_bread (&ext_subspace, amt, abfd) != amt) 2195 goto error_return; 2196 2197 som_swap_subspace_dictionary_in (&ext_subspace, &subspace); 2198 2199 /* Setup the subspace name string. */ 2200 if (subspace.name >= file_hdr->space_strings_size) 2201 goto error_return; 2202 2203 subspace_name = subspace.name + space_strings; 2204 2205 amt = strlen (subspace_name) + 1; 2206 newname = bfd_alloc (abfd, amt); 2207 if (!newname) 2208 goto error_return; 2209 strcpy (newname, subspace_name); 2210 2211 /* Make a section out of this subspace. */ 2212 subspace_asect = bfd_make_section_anyway (abfd, newname); 2213 if (!subspace_asect) 2214 goto error_return; 2215 2216 /* Store private information about the section. */ 2217 if (! bfd_som_set_subsection_attributes (subspace_asect, space_asect, 2218 subspace.access_control_bits, 2219 subspace.sort_key, 2220 subspace.quadrant, 2221 subspace.is_comdat, 2222 subspace.is_common, 2223 subspace.dup_common)) 2224 goto error_return; 2225 2226 /* Keep an easy mapping between subspaces and sections. 2227 Note we do not necessarily read the subspaces in the 2228 same order in which they appear in the object file. 2229 2230 So to make the target index come out correctly, we 2231 store the location of the subspace header in target 2232 index, then sort using the location of the subspace 2233 header as the key. Then we can assign correct 2234 subspace indices. */ 2235 total_subspaces++; 2236 subspace_asect->target_index = bfd_tell (abfd) - sizeof (subspace); 2237 2238 /* Set SEC_READONLY and SEC_CODE/SEC_DATA as specified 2239 by the access_control_bits in the subspace header. */ 2240 switch (subspace.access_control_bits >> 4) 2241 { 2242 /* Readonly data. */ 2243 case 0x0: 2244 subspace_asect->flags |= SEC_DATA | SEC_READONLY; 2245 break; 2246 2247 /* Normal data. */ 2248 case 0x1: 2249 subspace_asect->flags |= SEC_DATA; 2250 break; 2251 2252 /* Readonly code and the gateways. 2253 Gateways have other attributes which do not map 2254 into anything BFD knows about. */ 2255 case 0x2: 2256 case 0x4: 2257 case 0x5: 2258 case 0x6: 2259 case 0x7: 2260 subspace_asect->flags |= SEC_CODE | SEC_READONLY; 2261 break; 2262 2263 /* dynamic (writable) code. */ 2264 case 0x3: 2265 subspace_asect->flags |= SEC_CODE; 2266 break; 2267 } 2268 2269 if (subspace.is_comdat || subspace.is_common || subspace.dup_common) 2270 subspace_asect->flags |= SEC_LINK_ONCE; 2271 2272 if (subspace.subspace_length > 0) 2273 subspace_asect->flags |= SEC_HAS_CONTENTS; 2274 2275 if (subspace.is_loadable) 2276 subspace_asect->flags |= SEC_ALLOC | SEC_LOAD; 2277 else 2278 subspace_asect->flags |= SEC_DEBUGGING; 2279 2280 if (subspace.code_only) 2281 subspace_asect->flags |= SEC_CODE; 2282 2283 /* Both file_loc_init_value and initialization_length will 2284 be zero for a BSS like subspace. */ 2285 if (subspace.file_loc_init_value == 0 2286 && subspace.initialization_length == 0) 2287 subspace_asect->flags &= ~(SEC_DATA | SEC_LOAD | SEC_HAS_CONTENTS); 2288 2289 /* This subspace has relocations. 2290 The fixup_request_quantity is a byte count for the number of 2291 entries in the relocation stream; it is not the actual number 2292 of relocations in the subspace. */ 2293 if (subspace.fixup_request_quantity != 0) 2294 { 2295 subspace_asect->flags |= SEC_RELOC; 2296 subspace_asect->rel_filepos = subspace.fixup_request_index; 2297 som_section_data (subspace_asect)->reloc_size 2298 = subspace.fixup_request_quantity; 2299 /* We can not determine this yet. When we read in the 2300 relocation table the correct value will be filled in. */ 2301 subspace_asect->reloc_count = (unsigned) -1; 2302 } 2303 2304 /* Update save_subspace if appropriate. */ 2305 if (subspace.file_loc_init_value > save_subspace.file_loc_init_value) 2306 save_subspace = subspace; 2307 2308 subspace_asect->vma = subspace.subspace_start; 2309 subspace_asect->size = subspace.subspace_length; 2310 subspace_asect->filepos = (subspace.file_loc_init_value 2311 + current_offset); 2312 subspace_asect->alignment_power = exact_log2 (subspace.alignment); 2313 if (subspace_asect->alignment_power == (unsigned) -1) 2314 goto error_return; 2315 2316 /* Keep track of the accumulated sizes of the sections. */ 2317 space_size += subspace.subspace_length; 2318 } 2319 2320 /* This can happen for a .o which defines symbols in otherwise 2321 empty subspaces. */ 2322 if (!save_subspace.file_loc_init_value) 2323 space_asect->size = 0; 2324 else 2325 { 2326 if (file_hdr->a_magic != RELOC_MAGIC) 2327 { 2328 /* Setup the size for the space section based upon the info 2329 in the last subspace of the space. */ 2330 space_asect->size = (save_subspace.subspace_start 2331 - space_asect->vma 2332 + save_subspace.subspace_length); 2333 } 2334 else 2335 { 2336 /* The subspace_start field is not initialised in relocatable 2337 only objects, so it cannot be used for length calculations. 2338 Instead we use the space_size value which we have been 2339 accumulating. This isn't an accurate estimate since it 2340 ignores alignment and ordering issues. */ 2341 space_asect->size = space_size; 2342 } 2343 } 2344 } 2345 /* Now that we've read in all the subspace records, we need to assign 2346 a target index to each subspace. */ 2347 if (_bfd_mul_overflow (total_subspaces, sizeof (asection *), &amt)) 2348 { 2349 bfd_set_error (bfd_error_file_too_big); 2350 goto error_return; 2351 } 2352 subspace_sections = bfd_malloc (amt); 2353 if (subspace_sections == NULL) 2354 goto error_return; 2355 2356 for (i = 0, section = abfd->sections; section; section = section->next) 2357 { 2358 if (!som_is_subspace (section)) 2359 continue; 2360 2361 subspace_sections[i] = section; 2362 i++; 2363 } 2364 qsort (subspace_sections, total_subspaces, 2365 sizeof (asection *), compare_subspaces); 2366 2367 /* subspace_sections is now sorted in the order in which the subspaces 2368 appear in the object file. Assign an index to each one now. */ 2369 for (i = 0; i < total_subspaces; i++) 2370 subspace_sections[i]->target_index = i; 2371 2372 free (space_strings); 2373 free (subspace_sections); 2374 return TRUE; 2375 2376 error_return: 2377 free (space_strings); 2378 free (subspace_sections); 2379 return FALSE; 2380 } 2381 2382 2383 /* Read in a SOM object and make it into a BFD. */ 2384 2385 static bfd_cleanup 2386 som_object_p (bfd *abfd) 2387 { 2388 struct som_external_header ext_file_hdr; 2389 struct som_header file_hdr; 2390 struct som_exec_auxhdr *aux_hdr_ptr = NULL; 2391 unsigned long current_offset = 0; 2392 struct som_external_lst_header ext_lst_header; 2393 struct som_external_som_entry ext_som_entry; 2394 size_t amt; 2395 unsigned int loc; 2396 #define ENTRY_SIZE sizeof (struct som_external_som_entry) 2397 2398 amt = sizeof (struct som_external_header); 2399 if (bfd_bread (&ext_file_hdr, amt, abfd) != amt) 2400 { 2401 if (bfd_get_error () != bfd_error_system_call) 2402 bfd_set_error (bfd_error_wrong_format); 2403 return NULL; 2404 } 2405 2406 som_swap_header_in (&ext_file_hdr, &file_hdr); 2407 2408 if (!_PA_RISC_ID (file_hdr.system_id)) 2409 { 2410 bfd_set_error (bfd_error_wrong_format); 2411 return NULL; 2412 } 2413 2414 switch (file_hdr.a_magic) 2415 { 2416 case RELOC_MAGIC: 2417 case EXEC_MAGIC: 2418 case SHARE_MAGIC: 2419 case DEMAND_MAGIC: 2420 case DL_MAGIC: 2421 case SHL_MAGIC: 2422 #ifdef SHARED_MAGIC_CNX 2423 case SHARED_MAGIC_CNX: 2424 #endif 2425 break; 2426 2427 case EXECLIBMAGIC: 2428 /* Read the lst header and determine where the SOM directory begins. */ 2429 2430 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 2431 { 2432 if (bfd_get_error () != bfd_error_system_call) 2433 bfd_set_error (bfd_error_wrong_format); 2434 return NULL; 2435 } 2436 2437 amt = sizeof (struct som_external_lst_header); 2438 if (bfd_bread (&ext_lst_header, amt, abfd) != amt) 2439 { 2440 if (bfd_get_error () != bfd_error_system_call) 2441 bfd_set_error (bfd_error_wrong_format); 2442 return NULL; 2443 } 2444 2445 /* Position to and read the first directory entry. */ 2446 loc = bfd_getb32 (ext_lst_header.dir_loc); 2447 if (bfd_seek (abfd, loc, SEEK_SET) != 0) 2448 { 2449 if (bfd_get_error () != bfd_error_system_call) 2450 bfd_set_error (bfd_error_wrong_format); 2451 return NULL; 2452 } 2453 2454 amt = ENTRY_SIZE; 2455 if (bfd_bread (&ext_som_entry, amt, abfd) != amt) 2456 { 2457 if (bfd_get_error () != bfd_error_system_call) 2458 bfd_set_error (bfd_error_wrong_format); 2459 return NULL; 2460 } 2461 2462 /* Now position to the first SOM. */ 2463 current_offset = bfd_getb32 (ext_som_entry.location); 2464 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0) 2465 { 2466 if (bfd_get_error () != bfd_error_system_call) 2467 bfd_set_error (bfd_error_wrong_format); 2468 return NULL; 2469 } 2470 2471 /* And finally, re-read the som header. */ 2472 amt = sizeof (struct som_external_header); 2473 if (bfd_bread (&ext_file_hdr, amt, abfd) != amt) 2474 { 2475 if (bfd_get_error () != bfd_error_system_call) 2476 bfd_set_error (bfd_error_wrong_format); 2477 return NULL; 2478 } 2479 2480 som_swap_header_in (&ext_file_hdr, &file_hdr); 2481 2482 break; 2483 2484 default: 2485 bfd_set_error (bfd_error_wrong_format); 2486 return NULL; 2487 } 2488 2489 if (file_hdr.version_id != OLD_VERSION_ID 2490 && file_hdr.version_id != NEW_VERSION_ID) 2491 { 2492 bfd_set_error (bfd_error_wrong_format); 2493 return NULL; 2494 } 2495 2496 /* If the aux_header_size field in the file header is zero, then this 2497 object is an incomplete executable (a .o file). Do not try to read 2498 a non-existant auxiliary header. */ 2499 if (file_hdr.aux_header_size != 0) 2500 { 2501 struct som_external_exec_auxhdr ext_exec_auxhdr; 2502 2503 aux_hdr_ptr = bfd_zalloc (abfd, 2504 (bfd_size_type) sizeof (*aux_hdr_ptr)); 2505 if (aux_hdr_ptr == NULL) 2506 return NULL; 2507 amt = sizeof (struct som_external_exec_auxhdr); 2508 if (bfd_bread (&ext_exec_auxhdr, amt, abfd) != amt) 2509 { 2510 if (bfd_get_error () != bfd_error_system_call) 2511 bfd_set_error (bfd_error_wrong_format); 2512 return NULL; 2513 } 2514 som_swap_exec_auxhdr_in (&ext_exec_auxhdr, aux_hdr_ptr); 2515 } 2516 2517 if (!setup_sections (abfd, &file_hdr, current_offset)) 2518 { 2519 /* setup_sections does not bubble up a bfd error code. */ 2520 bfd_set_error (bfd_error_bad_value); 2521 return NULL; 2522 } 2523 2524 /* This appears to be a valid SOM object. Do some initialization. */ 2525 return som_object_setup (abfd, &file_hdr, aux_hdr_ptr, current_offset); 2526 } 2527 2528 /* Create a SOM object. */ 2529 2530 static bfd_boolean 2531 som_mkobject (bfd *abfd) 2532 { 2533 /* Allocate memory to hold backend information. */ 2534 abfd->tdata.som_data = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_data_struct)); 2535 if (abfd->tdata.som_data == NULL) 2536 return FALSE; 2537 return TRUE; 2538 } 2539 2540 /* Initialize some information in the file header. This routine makes 2541 not attempt at doing the right thing for a full executable; it 2542 is only meant to handle relocatable objects. */ 2543 2544 static bfd_boolean 2545 som_prep_headers (bfd *abfd) 2546 { 2547 struct som_header *file_hdr; 2548 asection *section; 2549 size_t amt = sizeof (struct som_header); 2550 2551 /* Make and attach a file header to the BFD. */ 2552 file_hdr = bfd_zalloc (abfd, amt); 2553 if (file_hdr == NULL) 2554 return FALSE; 2555 obj_som_file_hdr (abfd) = file_hdr; 2556 2557 if (abfd->flags & (EXEC_P | DYNAMIC)) 2558 { 2559 /* Make and attach an exec header to the BFD. */ 2560 amt = sizeof (struct som_exec_auxhdr); 2561 obj_som_exec_hdr (abfd) = bfd_zalloc (abfd, amt); 2562 if (obj_som_exec_hdr (abfd) == NULL) 2563 return FALSE; 2564 2565 if (abfd->flags & D_PAGED) 2566 file_hdr->a_magic = DEMAND_MAGIC; 2567 else if (abfd->flags & WP_TEXT) 2568 file_hdr->a_magic = SHARE_MAGIC; 2569 #ifdef SHL_MAGIC 2570 else if (abfd->flags & DYNAMIC) 2571 file_hdr->a_magic = SHL_MAGIC; 2572 #endif 2573 else 2574 file_hdr->a_magic = EXEC_MAGIC; 2575 } 2576 else 2577 file_hdr->a_magic = RELOC_MAGIC; 2578 2579 /* These fields are optional, and embedding timestamps is not always 2580 a wise thing to do, it makes comparing objects during a multi-stage 2581 bootstrap difficult. */ 2582 file_hdr->file_time.secs = 0; 2583 file_hdr->file_time.nanosecs = 0; 2584 2585 file_hdr->entry_space = 0; 2586 file_hdr->entry_subspace = 0; 2587 file_hdr->entry_offset = 0; 2588 file_hdr->presumed_dp = 0; 2589 2590 /* Now iterate over the sections translating information from 2591 BFD sections to SOM spaces/subspaces. */ 2592 for (section = abfd->sections; section != NULL; section = section->next) 2593 { 2594 /* Ignore anything which has not been marked as a space or 2595 subspace. */ 2596 if (!som_is_space (section) && !som_is_subspace (section)) 2597 continue; 2598 2599 if (som_is_space (section)) 2600 { 2601 /* Allocate space for the space dictionary. */ 2602 amt = sizeof (struct som_space_dictionary_record); 2603 som_section_data (section)->space_dict = bfd_zalloc (abfd, amt); 2604 if (som_section_data (section)->space_dict == NULL) 2605 return FALSE; 2606 /* Set space attributes. Note most attributes of SOM spaces 2607 are set based on the subspaces it contains. */ 2608 som_section_data (section)->space_dict->loader_fix_index = -1; 2609 som_section_data (section)->space_dict->init_pointer_index = -1; 2610 2611 /* Set more attributes that were stuffed away in private data. */ 2612 som_section_data (section)->space_dict->sort_key = 2613 som_section_data (section)->copy_data->sort_key; 2614 som_section_data (section)->space_dict->is_defined = 2615 som_section_data (section)->copy_data->is_defined; 2616 som_section_data (section)->space_dict->is_private = 2617 som_section_data (section)->copy_data->is_private; 2618 som_section_data (section)->space_dict->space_number = 2619 som_section_data (section)->copy_data->space_number; 2620 } 2621 else 2622 { 2623 /* Allocate space for the subspace dictionary. */ 2624 amt = sizeof (struct som_subspace_dictionary_record); 2625 som_section_data (section)->subspace_dict = bfd_zalloc (abfd, amt); 2626 if (som_section_data (section)->subspace_dict == NULL) 2627 return FALSE; 2628 2629 /* Set subspace attributes. Basic stuff is done here, additional 2630 attributes are filled in later as more information becomes 2631 available. */ 2632 if (section->flags & SEC_ALLOC) 2633 som_section_data (section)->subspace_dict->is_loadable = 1; 2634 2635 if (section->flags & SEC_CODE) 2636 som_section_data (section)->subspace_dict->code_only = 1; 2637 2638 som_section_data (section)->subspace_dict->subspace_start = 2639 section->vma; 2640 som_section_data (section)->subspace_dict->subspace_length = 2641 section->size; 2642 som_section_data (section)->subspace_dict->initialization_length = 2643 section->size; 2644 som_section_data (section)->subspace_dict->alignment = 2645 1 << section->alignment_power; 2646 2647 /* Set more attributes that were stuffed away in private data. */ 2648 som_section_data (section)->subspace_dict->sort_key = 2649 som_section_data (section)->copy_data->sort_key; 2650 som_section_data (section)->subspace_dict->access_control_bits = 2651 som_section_data (section)->copy_data->access_control_bits; 2652 som_section_data (section)->subspace_dict->quadrant = 2653 som_section_data (section)->copy_data->quadrant; 2654 som_section_data (section)->subspace_dict->is_comdat = 2655 som_section_data (section)->copy_data->is_comdat; 2656 som_section_data (section)->subspace_dict->is_common = 2657 som_section_data (section)->copy_data->is_common; 2658 som_section_data (section)->subspace_dict->dup_common = 2659 som_section_data (section)->copy_data->dup_common; 2660 } 2661 } 2662 return TRUE; 2663 } 2664 2665 /* Return TRUE if the given section is a SOM space, FALSE otherwise. */ 2666 2667 static bfd_boolean 2668 som_is_space (asection *section) 2669 { 2670 /* If no copy data is available, then it's neither a space nor a 2671 subspace. */ 2672 if (som_section_data (section)->copy_data == NULL) 2673 return FALSE; 2674 2675 /* If the containing space isn't the same as the given section, 2676 then this isn't a space. */ 2677 if (som_section_data (section)->copy_data->container != section 2678 && (som_section_data (section)->copy_data->container->output_section 2679 != section)) 2680 return FALSE; 2681 2682 /* OK. Must be a space. */ 2683 return TRUE; 2684 } 2685 2686 /* Return TRUE if the given section is a SOM subspace, FALSE otherwise. */ 2687 2688 static bfd_boolean 2689 som_is_subspace (asection *section) 2690 { 2691 /* If no copy data is available, then it's neither a space nor a 2692 subspace. */ 2693 if (som_section_data (section)->copy_data == NULL) 2694 return FALSE; 2695 2696 /* If the containing space is the same as the given section, 2697 then this isn't a subspace. */ 2698 if (som_section_data (section)->copy_data->container == section 2699 || (som_section_data (section)->copy_data->container->output_section 2700 == section)) 2701 return FALSE; 2702 2703 /* OK. Must be a subspace. */ 2704 return TRUE; 2705 } 2706 2707 /* Return TRUE if the given space contains the given subspace. It 2708 is safe to assume space really is a space, and subspace really 2709 is a subspace. */ 2710 2711 static bfd_boolean 2712 som_is_container (asection *space, asection *subspace) 2713 { 2714 return (som_section_data (subspace)->copy_data->container == space) 2715 || (som_section_data (subspace)->copy_data->container->output_section 2716 == space); 2717 } 2718 2719 /* Count and return the number of spaces attached to the given BFD. */ 2720 2721 static unsigned long 2722 som_count_spaces (bfd *abfd) 2723 { 2724 int count = 0; 2725 asection *section; 2726 2727 for (section = abfd->sections; section != NULL; section = section->next) 2728 count += som_is_space (section); 2729 2730 return count; 2731 } 2732 2733 /* Count the number of subspaces attached to the given BFD. */ 2734 2735 static unsigned long 2736 som_count_subspaces (bfd *abfd) 2737 { 2738 int count = 0; 2739 asection *section; 2740 2741 for (section = abfd->sections; section != NULL; section = section->next) 2742 count += som_is_subspace (section); 2743 2744 return count; 2745 } 2746 2747 /* Return -1, 0, 1 indicating the relative ordering of sym1 and sym2. 2748 2749 We desire symbols to be ordered starting with the symbol with the 2750 highest relocation count down to the symbol with the lowest relocation 2751 count. Doing so compacts the relocation stream. */ 2752 2753 static int 2754 compare_syms (const void *arg1, const void *arg2) 2755 { 2756 asymbol **sym1 = (asymbol **) arg1; 2757 asymbol **sym2 = (asymbol **) arg2; 2758 unsigned int count1, count2; 2759 2760 /* Get relocation count for each symbol. Note that the count 2761 is stored in the udata pointer for section symbols! */ 2762 if ((*sym1)->flags & BSF_SECTION_SYM) 2763 count1 = (*sym1)->udata.i; 2764 else 2765 count1 = som_symbol_data (*sym1)->reloc_count; 2766 2767 if ((*sym2)->flags & BSF_SECTION_SYM) 2768 count2 = (*sym2)->udata.i; 2769 else 2770 count2 = som_symbol_data (*sym2)->reloc_count; 2771 2772 /* Return the appropriate value. */ 2773 if (count1 < count2) 2774 return 1; 2775 else if (count1 > count2) 2776 return -1; 2777 return 0; 2778 } 2779 2780 /* Return -1, 0, 1 indicating the relative ordering of subspace1 2781 and subspace. */ 2782 2783 static int 2784 compare_subspaces (const void *arg1, const void *arg2) 2785 { 2786 asection **subspace1 = (asection **) arg1; 2787 asection **subspace2 = (asection **) arg2; 2788 2789 if ((*subspace1)->target_index < (*subspace2)->target_index) 2790 return -1; 2791 else if ((*subspace2)->target_index < (*subspace1)->target_index) 2792 return 1; 2793 else 2794 return 0; 2795 } 2796 2797 /* Perform various work in preparation for emitting the fixup stream. */ 2798 2799 static bfd_boolean 2800 som_prep_for_fixups (bfd *abfd, asymbol **syms, unsigned long num_syms) 2801 { 2802 unsigned long i; 2803 asection *section; 2804 asymbol **sorted_syms; 2805 size_t amt; 2806 2807 if (num_syms == 0) 2808 return TRUE; 2809 2810 /* Most SOM relocations involving a symbol have a length which is 2811 dependent on the index of the symbol. So symbols which are 2812 used often in relocations should have a small index. */ 2813 2814 /* First initialize the counters for each symbol. */ 2815 for (i = 0; i < num_syms; i++) 2816 { 2817 /* Handle a section symbol; these have no pointers back to the 2818 SOM symbol info. So we just use the udata field to hold the 2819 relocation count. */ 2820 if (som_symbol_data (syms[i]) == NULL 2821 || syms[i]->flags & BSF_SECTION_SYM) 2822 { 2823 syms[i]->flags |= BSF_SECTION_SYM; 2824 syms[i]->udata.i = 0; 2825 } 2826 else 2827 som_symbol_data (syms[i])->reloc_count = 0; 2828 } 2829 2830 /* Now that the counters are initialized, make a weighted count 2831 of how often a given symbol is used in a relocation. */ 2832 for (section = abfd->sections; section != NULL; section = section->next) 2833 { 2834 int j; 2835 2836 /* Does this section have any relocations? */ 2837 if ((int) section->reloc_count <= 0) 2838 continue; 2839 2840 /* Walk through each relocation for this section. */ 2841 for (j = 1; j < (int) section->reloc_count; j++) 2842 { 2843 arelent *reloc = section->orelocation[j]; 2844 int scale; 2845 2846 /* A relocation against a symbol in the *ABS* section really 2847 does not have a symbol. Likewise if the symbol isn't associated 2848 with any section. */ 2849 if (reloc->sym_ptr_ptr == NULL 2850 || bfd_is_abs_section ((*reloc->sym_ptr_ptr)->section)) 2851 continue; 2852 2853 /* Scaling to encourage symbols involved in R_DP_RELATIVE 2854 and R_CODE_ONE_SYMBOL relocations to come first. These 2855 two relocations have single byte versions if the symbol 2856 index is very small. */ 2857 if (reloc->howto->type == R_DP_RELATIVE 2858 || reloc->howto->type == R_CODE_ONE_SYMBOL) 2859 scale = 2; 2860 else 2861 scale = 1; 2862 2863 /* Handle section symbols by storing the count in the udata 2864 field. It will not be used and the count is very important 2865 for these symbols. */ 2866 if ((*reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM) 2867 { 2868 (*reloc->sym_ptr_ptr)->udata.i = 2869 (*reloc->sym_ptr_ptr)->udata.i + scale; 2870 continue; 2871 } 2872 2873 /* A normal symbol. Increment the count. */ 2874 som_symbol_data (*reloc->sym_ptr_ptr)->reloc_count += scale; 2875 } 2876 } 2877 2878 /* Sort a copy of the symbol table, rather than the canonical 2879 output symbol table. */ 2880 if (_bfd_mul_overflow (num_syms, sizeof (asymbol *), &amt)) 2881 { 2882 bfd_set_error (bfd_error_no_memory); 2883 return FALSE; 2884 } 2885 sorted_syms = bfd_zalloc (abfd, amt); 2886 if (sorted_syms == NULL) 2887 return FALSE; 2888 memcpy (sorted_syms, syms, num_syms * sizeof (asymbol *)); 2889 qsort (sorted_syms, num_syms, sizeof (asymbol *), compare_syms); 2890 obj_som_sorted_syms (abfd) = sorted_syms; 2891 2892 /* Compute the symbol indexes, they will be needed by the relocation 2893 code. */ 2894 for (i = 0; i < num_syms; i++) 2895 { 2896 /* A section symbol. Again, there is no pointer to backend symbol 2897 information, so we reuse the udata field again. */ 2898 if (sorted_syms[i]->flags & BSF_SECTION_SYM) 2899 sorted_syms[i]->udata.i = i; 2900 else 2901 som_symbol_data (sorted_syms[i])->index = i; 2902 } 2903 return TRUE; 2904 } 2905 2906 static bfd_boolean 2907 som_write_fixups (bfd *abfd, 2908 unsigned long current_offset, 2909 unsigned int *total_reloc_sizep) 2910 { 2911 unsigned int i, j; 2912 /* Chunk of memory that we can use as buffer space, then throw 2913 away. */ 2914 unsigned char tmp_space[SOM_TMP_BUFSIZE]; 2915 unsigned char *p; 2916 unsigned int total_reloc_size = 0; 2917 unsigned int subspace_reloc_size = 0; 2918 unsigned int num_spaces = obj_som_file_hdr (abfd)->space_total; 2919 asection *section = abfd->sections; 2920 size_t amt; 2921 2922 memset (tmp_space, 0, SOM_TMP_BUFSIZE); 2923 p = tmp_space; 2924 2925 /* All the fixups for a particular subspace are emitted in a single 2926 stream. All the subspaces for a particular space are emitted 2927 as a single stream. 2928 2929 So, to get all the locations correct one must iterate through all the 2930 spaces, for each space iterate through its subspaces and output a 2931 fixups stream. */ 2932 for (i = 0; i < num_spaces; i++) 2933 { 2934 asection *subsection; 2935 2936 /* Find a space. */ 2937 while (!som_is_space (section)) 2938 section = section->next; 2939 2940 /* Now iterate through each of its subspaces. */ 2941 for (subsection = abfd->sections; 2942 subsection != NULL; 2943 subsection = subsection->next) 2944 { 2945 int reloc_offset; 2946 unsigned int current_rounding_mode; 2947 #ifndef NO_PCREL_MODES 2948 unsigned int current_call_mode; 2949 #endif 2950 2951 /* Find a subspace of this space. */ 2952 if (!som_is_subspace (subsection) 2953 || !som_is_container (section, subsection)) 2954 continue; 2955 2956 /* If this subspace does not have real data, then we are 2957 finished with it. */ 2958 if ((subsection->flags & SEC_HAS_CONTENTS) == 0) 2959 { 2960 som_section_data (subsection)->subspace_dict->fixup_request_index 2961 = -1; 2962 continue; 2963 } 2964 2965 /* This subspace has some relocations. Put the relocation stream 2966 index into the subspace record. */ 2967 som_section_data (subsection)->subspace_dict->fixup_request_index 2968 = total_reloc_size; 2969 2970 /* To make life easier start over with a clean slate for 2971 each subspace. Seek to the start of the relocation stream 2972 for this subspace in preparation for writing out its fixup 2973 stream. */ 2974 if (bfd_seek (abfd, current_offset + total_reloc_size, SEEK_SET) != 0) 2975 return FALSE; 2976 2977 /* Buffer space has already been allocated. Just perform some 2978 initialization here. */ 2979 p = tmp_space; 2980 subspace_reloc_size = 0; 2981 reloc_offset = 0; 2982 som_initialize_reloc_queue (reloc_queue); 2983 current_rounding_mode = R_N_MODE; 2984 #ifndef NO_PCREL_MODES 2985 current_call_mode = R_SHORT_PCREL_MODE; 2986 #endif 2987 2988 /* Translate each BFD relocation into one or more SOM 2989 relocations. */ 2990 for (j = 0; j < subsection->reloc_count; j++) 2991 { 2992 arelent *bfd_reloc = subsection->orelocation[j]; 2993 unsigned int skip; 2994 int sym_num; 2995 2996 /* Get the symbol number. Remember it's stored in a 2997 special place for section symbols. */ 2998 if ((*bfd_reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM) 2999 sym_num = (*bfd_reloc->sym_ptr_ptr)->udata.i; 3000 else 3001 sym_num = som_symbol_data (*bfd_reloc->sym_ptr_ptr)->index; 3002 3003 /* If there is not enough room for the next couple relocations, 3004 then dump the current buffer contents now. Also reinitialize 3005 the relocation queue. 3006 3007 No single BFD relocation could ever translate into more 3008 than 100 bytes of SOM relocations (20bytes is probably the 3009 upper limit, but leave lots of space for growth). */ 3010 if (p - tmp_space + 100 > SOM_TMP_BUFSIZE) 3011 { 3012 amt = p - tmp_space; 3013 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt) 3014 return FALSE; 3015 3016 p = tmp_space; 3017 som_initialize_reloc_queue (reloc_queue); 3018 } 3019 3020 /* Emit R_NO_RELOCATION fixups to map any bytes which were 3021 skipped. */ 3022 skip = bfd_reloc->address - reloc_offset; 3023 p = som_reloc_skip (abfd, skip, p, 3024 &subspace_reloc_size, reloc_queue); 3025 3026 /* Update reloc_offset for the next iteration. 3027 3028 Many relocations do not consume input bytes. They 3029 are markers, or set state necessary to perform some 3030 later relocation. */ 3031 switch (bfd_reloc->howto->type) 3032 { 3033 case R_ENTRY: 3034 case R_ALT_ENTRY: 3035 case R_EXIT: 3036 case R_N_MODE: 3037 case R_S_MODE: 3038 case R_D_MODE: 3039 case R_R_MODE: 3040 case R_FSEL: 3041 case R_LSEL: 3042 case R_RSEL: 3043 case R_COMP1: 3044 case R_COMP2: 3045 case R_BEGIN_BRTAB: 3046 case R_END_BRTAB: 3047 case R_BEGIN_TRY: 3048 case R_END_TRY: 3049 case R_N0SEL: 3050 case R_N1SEL: 3051 #ifndef NO_PCREL_MODES 3052 case R_SHORT_PCREL_MODE: 3053 case R_LONG_PCREL_MODE: 3054 #endif 3055 reloc_offset = bfd_reloc->address; 3056 break; 3057 3058 default: 3059 reloc_offset = bfd_reloc->address + 4; 3060 break; 3061 } 3062 3063 /* Now the actual relocation we care about. */ 3064 switch (bfd_reloc->howto->type) 3065 { 3066 case R_PCREL_CALL: 3067 case R_ABS_CALL: 3068 p = som_reloc_call (abfd, p, &subspace_reloc_size, 3069 bfd_reloc, sym_num, reloc_queue); 3070 break; 3071 3072 case R_CODE_ONE_SYMBOL: 3073 case R_DP_RELATIVE: 3074 /* Account for any addend. */ 3075 if (bfd_reloc->addend) 3076 p = som_reloc_addend (abfd, bfd_reloc->addend, p, 3077 &subspace_reloc_size, reloc_queue); 3078 3079 if (sym_num < 0x20) 3080 { 3081 bfd_put_8 (abfd, bfd_reloc->howto->type + sym_num, p); 3082 subspace_reloc_size += 1; 3083 p += 1; 3084 } 3085 else if (sym_num < 0x100) 3086 { 3087 bfd_put_8 (abfd, bfd_reloc->howto->type + 32, p); 3088 bfd_put_8 (abfd, sym_num, p + 1); 3089 p = try_prev_fixup (abfd, &subspace_reloc_size, p, 3090 2, reloc_queue); 3091 } 3092 else if (sym_num < 0x10000000) 3093 { 3094 bfd_put_8 (abfd, bfd_reloc->howto->type + 33, p); 3095 bfd_put_8 (abfd, sym_num >> 16, p + 1); 3096 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); 3097 p = try_prev_fixup (abfd, &subspace_reloc_size, 3098 p, 4, reloc_queue); 3099 } 3100 else 3101 abort (); 3102 break; 3103 3104 case R_DATA_GPREL: 3105 /* Account for any addend. */ 3106 if (bfd_reloc->addend) 3107 p = som_reloc_addend (abfd, bfd_reloc->addend, p, 3108 &subspace_reloc_size, reloc_queue); 3109 3110 if (sym_num < 0x10000000) 3111 { 3112 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3113 bfd_put_8 (abfd, sym_num >> 16, p + 1); 3114 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); 3115 p = try_prev_fixup (abfd, &subspace_reloc_size, 3116 p, 4, reloc_queue); 3117 } 3118 else 3119 abort (); 3120 break; 3121 3122 case R_DATA_ONE_SYMBOL: 3123 case R_DATA_PLABEL: 3124 case R_CODE_PLABEL: 3125 case R_DLT_REL: 3126 /* Account for any addend using R_DATA_OVERRIDE. */ 3127 if (bfd_reloc->howto->type != R_DATA_ONE_SYMBOL 3128 && bfd_reloc->addend) 3129 p = som_reloc_addend (abfd, bfd_reloc->addend, p, 3130 &subspace_reloc_size, reloc_queue); 3131 3132 if (sym_num < 0x100) 3133 { 3134 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3135 bfd_put_8 (abfd, sym_num, p + 1); 3136 p = try_prev_fixup (abfd, &subspace_reloc_size, p, 3137 2, reloc_queue); 3138 } 3139 else if (sym_num < 0x10000000) 3140 { 3141 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p); 3142 bfd_put_8 (abfd, sym_num >> 16, p + 1); 3143 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); 3144 p = try_prev_fixup (abfd, &subspace_reloc_size, 3145 p, 4, reloc_queue); 3146 } 3147 else 3148 abort (); 3149 break; 3150 3151 case R_ENTRY: 3152 { 3153 unsigned int tmp; 3154 arelent *tmp_reloc = NULL; 3155 bfd_put_8 (abfd, R_ENTRY, p); 3156 3157 /* R_ENTRY relocations have 64 bits of associated 3158 data. Unfortunately the addend field of a bfd 3159 relocation is only 32 bits. So, we split up 3160 the 64bit unwind information and store part in 3161 the R_ENTRY relocation, and the rest in the R_EXIT 3162 relocation. */ 3163 bfd_put_32 (abfd, bfd_reloc->addend, p + 1); 3164 3165 /* Find the next R_EXIT relocation. */ 3166 for (tmp = j; tmp < subsection->reloc_count; tmp++) 3167 { 3168 tmp_reloc = subsection->orelocation[tmp]; 3169 if (tmp_reloc->howto->type == R_EXIT) 3170 break; 3171 } 3172 3173 if (tmp == subsection->reloc_count) 3174 abort (); 3175 3176 bfd_put_32 (abfd, tmp_reloc->addend, p + 5); 3177 p = try_prev_fixup (abfd, &subspace_reloc_size, 3178 p, 9, reloc_queue); 3179 break; 3180 } 3181 3182 case R_N_MODE: 3183 case R_S_MODE: 3184 case R_D_MODE: 3185 case R_R_MODE: 3186 /* If this relocation requests the current rounding 3187 mode, then it is redundant. */ 3188 if (bfd_reloc->howto->type != current_rounding_mode) 3189 { 3190 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3191 subspace_reloc_size += 1; 3192 p += 1; 3193 current_rounding_mode = bfd_reloc->howto->type; 3194 } 3195 break; 3196 3197 #ifndef NO_PCREL_MODES 3198 case R_LONG_PCREL_MODE: 3199 case R_SHORT_PCREL_MODE: 3200 if (bfd_reloc->howto->type != current_call_mode) 3201 { 3202 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3203 subspace_reloc_size += 1; 3204 p += 1; 3205 current_call_mode = bfd_reloc->howto->type; 3206 } 3207 break; 3208 #endif 3209 3210 case R_EXIT: 3211 case R_ALT_ENTRY: 3212 case R_FSEL: 3213 case R_LSEL: 3214 case R_RSEL: 3215 case R_BEGIN_BRTAB: 3216 case R_END_BRTAB: 3217 case R_BEGIN_TRY: 3218 case R_N0SEL: 3219 case R_N1SEL: 3220 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3221 subspace_reloc_size += 1; 3222 p += 1; 3223 break; 3224 3225 case R_END_TRY: 3226 /* The end of an exception handling region. The reloc's 3227 addend contains the offset of the exception handling 3228 code. */ 3229 if (bfd_reloc->addend == 0) 3230 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3231 else if (bfd_reloc->addend < 1024) 3232 { 3233 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p); 3234 bfd_put_8 (abfd, bfd_reloc->addend / 4, p + 1); 3235 p = try_prev_fixup (abfd, &subspace_reloc_size, 3236 p, 2, reloc_queue); 3237 } 3238 else 3239 { 3240 bfd_put_8 (abfd, bfd_reloc->howto->type + 2, p); 3241 bfd_put_8 (abfd, (bfd_reloc->addend / 4) >> 16, p + 1); 3242 bfd_put_16 (abfd, bfd_reloc->addend / 4, p + 2); 3243 p = try_prev_fixup (abfd, &subspace_reloc_size, 3244 p, 4, reloc_queue); 3245 } 3246 break; 3247 3248 case R_COMP1: 3249 /* The only time we generate R_COMP1, R_COMP2 and 3250 R_CODE_EXPR relocs is for the difference of two 3251 symbols. Hence we can cheat here. */ 3252 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3253 bfd_put_8 (abfd, 0x44, p + 1); 3254 p = try_prev_fixup (abfd, &subspace_reloc_size, 3255 p, 2, reloc_queue); 3256 break; 3257 3258 case R_COMP2: 3259 /* The only time we generate R_COMP1, R_COMP2 and 3260 R_CODE_EXPR relocs is for the difference of two 3261 symbols. Hence we can cheat here. */ 3262 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3263 bfd_put_8 (abfd, 0x80, p + 1); 3264 bfd_put_8 (abfd, sym_num >> 16, p + 2); 3265 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3); 3266 p = try_prev_fixup (abfd, &subspace_reloc_size, 3267 p, 5, reloc_queue); 3268 break; 3269 3270 case R_CODE_EXPR: 3271 case R_DATA_EXPR: 3272 /* The only time we generate R_COMP1, R_COMP2 and 3273 R_CODE_EXPR relocs is for the difference of two 3274 symbols. Hence we can cheat here. */ 3275 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3276 subspace_reloc_size += 1; 3277 p += 1; 3278 break; 3279 3280 /* Put a "R_RESERVED" relocation in the stream if 3281 we hit something we do not understand. The linker 3282 will complain loudly if this ever happens. */ 3283 default: 3284 bfd_put_8 (abfd, 0xff, p); 3285 subspace_reloc_size += 1; 3286 p += 1; 3287 break; 3288 } 3289 } 3290 3291 /* Last BFD relocation for a subspace has been processed. 3292 Map the rest of the subspace with R_NO_RELOCATION fixups. */ 3293 p = som_reloc_skip (abfd, subsection->size - reloc_offset, 3294 p, &subspace_reloc_size, reloc_queue); 3295 3296 /* Scribble out the relocations. */ 3297 amt = p - tmp_space; 3298 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt) 3299 return FALSE; 3300 p = tmp_space; 3301 3302 total_reloc_size += subspace_reloc_size; 3303 som_section_data (subsection)->subspace_dict->fixup_request_quantity 3304 = subspace_reloc_size; 3305 } 3306 section = section->next; 3307 } 3308 *total_reloc_sizep = total_reloc_size; 3309 return TRUE; 3310 } 3311 3312 /* Write out the space/subspace string table. */ 3313 3314 static bfd_boolean 3315 som_write_space_strings (bfd *abfd, 3316 unsigned long current_offset, 3317 unsigned int *string_sizep) 3318 { 3319 /* Chunk of memory that we can use as buffer space, then throw 3320 away. */ 3321 size_t tmp_space_size = SOM_TMP_BUFSIZE; 3322 char *tmp_space = bfd_malloc (tmp_space_size); 3323 char *p = tmp_space; 3324 unsigned int strings_size = 0; 3325 asection *section; 3326 size_t amt; 3327 bfd_size_type res; 3328 3329 if (tmp_space == NULL) 3330 return FALSE; 3331 3332 /* Seek to the start of the space strings in preparation for writing 3333 them out. */ 3334 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) 3335 return FALSE; 3336 3337 /* Walk through all the spaces and subspaces (order is not important) 3338 building up and writing string table entries for their names. */ 3339 for (section = abfd->sections; section != NULL; section = section->next) 3340 { 3341 size_t length; 3342 3343 /* Only work with space/subspaces; avoid any other sections 3344 which might have been made (.text for example). */ 3345 if (!som_is_space (section) && !som_is_subspace (section)) 3346 continue; 3347 3348 /* Get the length of the space/subspace name. */ 3349 length = strlen (section->name); 3350 3351 /* If there is not enough room for the next entry, then dump the 3352 current buffer contents now and maybe allocate a larger 3353 buffer. Each entry will take 4 bytes to hold the string 3354 length + the string itself + null terminator. */ 3355 if (p - tmp_space + 5 + length > tmp_space_size) 3356 { 3357 /* Flush buffer before refilling or reallocating. */ 3358 amt = p - tmp_space; 3359 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) 3360 return FALSE; 3361 3362 /* Reallocate if now empty buffer still too small. */ 3363 if (5 + length > tmp_space_size) 3364 { 3365 /* Ensure a minimum growth factor to avoid O(n**2) space 3366 consumption for n strings. The optimal minimum 3367 factor seems to be 2, as no other value can guarantee 3368 wasting less than 50% space. (Note that we cannot 3369 deallocate space allocated by `alloca' without 3370 returning from this function.) The same technique is 3371 used a few more times below when a buffer is 3372 reallocated. */ 3373 if (2 * tmp_space_size < length + 5) 3374 tmp_space_size = length + 5; 3375 else 3376 tmp_space_size = 2 * tmp_space_size; 3377 tmp_space = xrealloc (tmp_space, tmp_space_size); 3378 } 3379 3380 /* Reset to beginning of the (possibly new) buffer space. */ 3381 p = tmp_space; 3382 } 3383 3384 /* First element in a string table entry is the length of the 3385 string. Alignment issues are already handled. */ 3386 bfd_put_32 (abfd, (bfd_vma) length, p); 3387 p += 4; 3388 strings_size += 4; 3389 3390 /* Record the index in the space/subspace records. */ 3391 if (som_is_space (section)) 3392 som_section_data (section)->space_dict->name = strings_size; 3393 else 3394 som_section_data (section)->subspace_dict->name = strings_size; 3395 3396 /* Next comes the string itself + a null terminator. */ 3397 strcpy (p, section->name); 3398 p += length + 1; 3399 strings_size += length + 1; 3400 3401 /* Always align up to the next word boundary. */ 3402 while (strings_size % 4) 3403 { 3404 bfd_put_8 (abfd, 0, p); 3405 p++; 3406 strings_size++; 3407 } 3408 } 3409 3410 /* Done with the space/subspace strings. Write out any information 3411 contained in a partial block. */ 3412 amt = p - tmp_space; 3413 res = bfd_bwrite ((void *) &tmp_space[0], amt, abfd); 3414 free (tmp_space); 3415 if (res != amt) 3416 return FALSE; 3417 *string_sizep = strings_size; 3418 return TRUE; 3419 } 3420 3421 /* Write out the symbol string table. */ 3422 3423 static bfd_boolean 3424 som_write_symbol_strings (bfd *abfd, 3425 unsigned long current_offset, 3426 asymbol **syms, 3427 unsigned int num_syms, 3428 unsigned int *string_sizep, 3429 struct som_compilation_unit *compilation_unit) 3430 { 3431 unsigned int i; 3432 /* Chunk of memory that we can use as buffer space, then throw 3433 away. */ 3434 size_t tmp_space_size = SOM_TMP_BUFSIZE; 3435 char *tmp_space = bfd_malloc (tmp_space_size); 3436 char *p = tmp_space; 3437 unsigned int strings_size = 0; 3438 size_t amt; 3439 bfd_size_type res; 3440 3441 if (tmp_space == NULL) 3442 return FALSE; 3443 3444 /* This gets a bit gruesome because of the compilation unit. The 3445 strings within the compilation unit are part of the symbol 3446 strings, but don't have symbol_dictionary entries. So, manually 3447 write them and update the compilation unit header. On input, the 3448 compilation unit header contains local copies of the strings. 3449 Move them aside. */ 3450 3451 /* Seek to the start of the space strings in preparation for writing 3452 them out. */ 3453 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) 3454 return FALSE; 3455 3456 if (compilation_unit) 3457 { 3458 for (i = 0; i < 4; i++) 3459 { 3460 struct som_name_pt *name; 3461 size_t length; 3462 3463 switch (i) 3464 { 3465 case 0: 3466 name = &compilation_unit->name; 3467 break; 3468 case 1: 3469 name = &compilation_unit->language_name; 3470 break; 3471 case 2: 3472 name = &compilation_unit->product_id; 3473 break; 3474 case 3: 3475 name = &compilation_unit->version_id; 3476 break; 3477 default: 3478 abort (); 3479 } 3480 3481 length = strlen (name->name); 3482 3483 /* If there is not enough room for the next entry, then dump 3484 the current buffer contents now and maybe allocate a 3485 larger buffer. */ 3486 if (p - tmp_space + 5 + length > tmp_space_size) 3487 { 3488 /* Flush buffer before refilling or reallocating. */ 3489 amt = p - tmp_space; 3490 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) 3491 return FALSE; 3492 3493 /* Reallocate if now empty buffer still too small. */ 3494 if (5 + length > tmp_space_size) 3495 { 3496 /* See alloca above for discussion of new size. */ 3497 if (2 * tmp_space_size < 5 + length) 3498 tmp_space_size = 5 + length; 3499 else 3500 tmp_space_size = 2 * tmp_space_size; 3501 tmp_space = xrealloc (tmp_space, tmp_space_size); 3502 } 3503 3504 /* Reset to beginning of the (possibly new) buffer 3505 space. */ 3506 p = tmp_space; 3507 } 3508 3509 /* First element in a string table entry is the length of 3510 the string. This must always be 4 byte aligned. This is 3511 also an appropriate time to fill in the string index 3512 field in the symbol table entry. */ 3513 bfd_put_32 (abfd, (bfd_vma) length, p); 3514 strings_size += 4; 3515 p += 4; 3516 3517 /* Next comes the string itself + a null terminator. */ 3518 strcpy (p, name->name); 3519 3520 name->strx = strings_size; 3521 3522 p += length + 1; 3523 strings_size += length + 1; 3524 3525 /* Always align up to the next word boundary. */ 3526 while (strings_size % 4) 3527 { 3528 bfd_put_8 (abfd, 0, p); 3529 strings_size++; 3530 p++; 3531 } 3532 } 3533 } 3534 3535 for (i = 0; i < num_syms; i++) 3536 { 3537 size_t length = strlen (syms[i]->name); 3538 3539 /* If there is not enough room for the next entry, then dump the 3540 current buffer contents now and maybe allocate a larger buffer. */ 3541 if (p - tmp_space + 5 + length > tmp_space_size) 3542 { 3543 /* Flush buffer before refilling or reallocating. */ 3544 amt = p - tmp_space; 3545 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) 3546 return FALSE; 3547 3548 /* Reallocate if now empty buffer still too small. */ 3549 if (5 + length > tmp_space_size) 3550 { 3551 /* See alloca above for discussion of new size. */ 3552 if (2 * tmp_space_size < 5 + length) 3553 tmp_space_size = 5 + length; 3554 else 3555 tmp_space_size = 2 * tmp_space_size; 3556 tmp_space = xrealloc (tmp_space, tmp_space_size); 3557 } 3558 3559 /* Reset to beginning of the (possibly new) buffer space. */ 3560 p = tmp_space; 3561 } 3562 3563 /* First element in a string table entry is the length of the 3564 string. This must always be 4 byte aligned. This is also 3565 an appropriate time to fill in the string index field in the 3566 symbol table entry. */ 3567 bfd_put_32 (abfd, (bfd_vma) length, p); 3568 strings_size += 4; 3569 p += 4; 3570 3571 /* Next comes the string itself + a null terminator. */ 3572 strcpy (p, syms[i]->name); 3573 3574 som_symbol_data (syms[i])->stringtab_offset = strings_size; 3575 p += length + 1; 3576 strings_size += length + 1; 3577 3578 /* Always align up to the next word boundary. */ 3579 while (strings_size % 4) 3580 { 3581 bfd_put_8 (abfd, 0, p); 3582 strings_size++; 3583 p++; 3584 } 3585 } 3586 3587 /* Scribble out any partial block. */ 3588 amt = p - tmp_space; 3589 res = bfd_bwrite ((void *) &tmp_space[0], amt, abfd); 3590 free (tmp_space); 3591 if (res != amt) 3592 return FALSE; 3593 3594 *string_sizep = strings_size; 3595 return TRUE; 3596 } 3597 3598 /* Compute variable information to be placed in the SOM headers, 3599 space/subspace dictionaries, relocation streams, etc. Begin 3600 writing parts of the object file. */ 3601 3602 static bfd_boolean 3603 som_begin_writing (bfd *abfd) 3604 { 3605 unsigned long current_offset = 0; 3606 unsigned int strings_size = 0; 3607 unsigned long num_spaces, num_subspaces, i; 3608 asection *section; 3609 unsigned int total_subspaces = 0; 3610 struct som_exec_auxhdr *exec_header = NULL; 3611 3612 /* The file header will always be first in an object file, 3613 everything else can be in random locations. To keep things 3614 "simple" BFD will lay out the object file in the manner suggested 3615 by the PRO ABI for PA-RISC Systems. */ 3616 3617 /* Before any output can really begin offsets for all the major 3618 portions of the object file must be computed. So, starting 3619 with the initial file header compute (and sometimes write) 3620 each portion of the object file. */ 3621 3622 /* Make room for the file header, it's contents are not complete 3623 yet, so it can not be written at this time. */ 3624 current_offset += sizeof (struct som_external_header); 3625 3626 /* Any auxiliary headers will follow the file header. Right now 3627 we support only the copyright and version headers. */ 3628 obj_som_file_hdr (abfd)->aux_header_location = current_offset; 3629 obj_som_file_hdr (abfd)->aux_header_size = 0; 3630 if (abfd->flags & (EXEC_P | DYNAMIC)) 3631 { 3632 /* Parts of the exec header will be filled in later, so 3633 delay writing the header itself. Fill in the defaults, 3634 and write it later. */ 3635 current_offset += sizeof (struct som_external_exec_auxhdr); 3636 obj_som_file_hdr (abfd)->aux_header_size 3637 += sizeof (struct som_external_exec_auxhdr); 3638 exec_header = obj_som_exec_hdr (abfd); 3639 exec_header->som_auxhdr.type = EXEC_AUX_ID; 3640 exec_header->som_auxhdr.length = 40; 3641 } 3642 if (obj_som_version_hdr (abfd) != NULL) 3643 { 3644 struct som_external_string_auxhdr ext_string_auxhdr; 3645 bfd_size_type len; 3646 3647 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) 3648 return FALSE; 3649 3650 /* Write the aux_id structure and the string length. */ 3651 len = sizeof (struct som_external_string_auxhdr); 3652 obj_som_file_hdr (abfd)->aux_header_size += len; 3653 current_offset += len; 3654 som_swap_string_auxhdr_out 3655 (obj_som_version_hdr (abfd), &ext_string_auxhdr); 3656 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len) 3657 return FALSE; 3658 3659 /* Write the version string. */ 3660 len = obj_som_version_hdr (abfd)->header_id.length - 4; 3661 obj_som_file_hdr (abfd)->aux_header_size += len; 3662 current_offset += len; 3663 if (bfd_bwrite ((void *) obj_som_version_hdr (abfd)->string, len, abfd) 3664 != len) 3665 return FALSE; 3666 } 3667 3668 if (obj_som_copyright_hdr (abfd) != NULL) 3669 { 3670 struct som_external_string_auxhdr ext_string_auxhdr; 3671 bfd_size_type len; 3672 3673 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) 3674 return FALSE; 3675 3676 /* Write the aux_id structure and the string length. */ 3677 len = sizeof (struct som_external_string_auxhdr); 3678 obj_som_file_hdr (abfd)->aux_header_size += len; 3679 current_offset += len; 3680 som_swap_string_auxhdr_out 3681 (obj_som_copyright_hdr (abfd), &ext_string_auxhdr); 3682 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len) 3683 return FALSE; 3684 3685 /* Write the copyright string. */ 3686 len = obj_som_copyright_hdr (abfd)->header_id.length - 4; 3687 obj_som_file_hdr (abfd)->aux_header_size += len; 3688 current_offset += len; 3689 if (bfd_bwrite ((void *) obj_som_copyright_hdr (abfd)->string, len, abfd) 3690 != len) 3691 return FALSE; 3692 } 3693 3694 /* Next comes the initialization pointers; we have no initialization 3695 pointers, so current offset does not change. */ 3696 obj_som_file_hdr (abfd)->init_array_location = current_offset; 3697 obj_som_file_hdr (abfd)->init_array_total = 0; 3698 3699 /* Next are the space records. These are fixed length records. 3700 3701 Count the number of spaces to determine how much room is needed 3702 in the object file for the space records. 3703 3704 The names of the spaces are stored in a separate string table, 3705 and the index for each space into the string table is computed 3706 below. Therefore, it is not possible to write the space headers 3707 at this time. */ 3708 num_spaces = som_count_spaces (abfd); 3709 obj_som_file_hdr (abfd)->space_location = current_offset; 3710 obj_som_file_hdr (abfd)->space_total = num_spaces; 3711 current_offset += 3712 num_spaces * sizeof (struct som_external_space_dictionary_record); 3713 3714 /* Next are the subspace records. These are fixed length records. 3715 3716 Count the number of subspaes to determine how much room is needed 3717 in the object file for the subspace records. 3718 3719 A variety if fields in the subspace record are still unknown at 3720 this time (index into string table, fixup stream location/size, etc). */ 3721 num_subspaces = som_count_subspaces (abfd); 3722 obj_som_file_hdr (abfd)->subspace_location = current_offset; 3723 obj_som_file_hdr (abfd)->subspace_total = num_subspaces; 3724 current_offset 3725 += num_subspaces * sizeof (struct som_external_subspace_dictionary_record); 3726 3727 /* Next is the string table for the space/subspace names. We will 3728 build and write the string table on the fly. At the same time 3729 we will fill in the space/subspace name index fields. */ 3730 3731 /* The string table needs to be aligned on a word boundary. */ 3732 if (current_offset % 4) 3733 current_offset += (4 - (current_offset % 4)); 3734 3735 /* Mark the offset of the space/subspace string table in the 3736 file header. */ 3737 obj_som_file_hdr (abfd)->space_strings_location = current_offset; 3738 3739 /* Scribble out the space strings. */ 3740 if (! som_write_space_strings (abfd, current_offset, &strings_size)) 3741 return FALSE; 3742 3743 /* Record total string table size in the header and update the 3744 current offset. */ 3745 obj_som_file_hdr (abfd)->space_strings_size = strings_size; 3746 current_offset += strings_size; 3747 3748 /* Next is the compilation unit. */ 3749 obj_som_file_hdr (abfd)->compiler_location = current_offset; 3750 obj_som_file_hdr (abfd)->compiler_total = 0; 3751 if (obj_som_compilation_unit (abfd)) 3752 { 3753 obj_som_file_hdr (abfd)->compiler_total = 1; 3754 current_offset += sizeof (struct som_external_compilation_unit); 3755 } 3756 3757 /* Now compute the file positions for the loadable subspaces, taking 3758 care to make sure everything stays properly aligned. */ 3759 3760 section = abfd->sections; 3761 for (i = 0; i < num_spaces; i++) 3762 { 3763 asection *subsection; 3764 int first_subspace; 3765 unsigned int subspace_offset = 0; 3766 3767 /* Find a space. */ 3768 while (!som_is_space (section)) 3769 section = section->next; 3770 3771 first_subspace = 1; 3772 /* Now look for all its subspaces. */ 3773 for (subsection = abfd->sections; 3774 subsection != NULL; 3775 subsection = subsection->next) 3776 { 3777 3778 if (!som_is_subspace (subsection) 3779 || !som_is_container (section, subsection) 3780 || (subsection->flags & SEC_ALLOC) == 0) 3781 continue; 3782 3783 /* If this is the first subspace in the space, and we are 3784 building an executable, then take care to make sure all 3785 the alignments are correct and update the exec header. */ 3786 if (first_subspace 3787 && (abfd->flags & (EXEC_P | DYNAMIC))) 3788 { 3789 /* Demand paged executables have each space aligned to a 3790 page boundary. Sharable executables (write-protected 3791 text) have just the private (aka data & bss) space aligned 3792 to a page boundary. Ugh. Not true for HPUX. 3793 3794 The HPUX kernel requires the text to always be page aligned 3795 within the file regardless of the executable's type. */ 3796 if (abfd->flags & (D_PAGED | DYNAMIC) 3797 || (subsection->flags & SEC_CODE) 3798 || ((abfd->flags & WP_TEXT) 3799 && (subsection->flags & SEC_DATA))) 3800 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3801 3802 /* Update the exec header. */ 3803 if (subsection->flags & SEC_CODE && exec_header->exec_tfile == 0) 3804 { 3805 exec_header->exec_tmem = section->vma; 3806 exec_header->exec_tfile = current_offset; 3807 } 3808 if (subsection->flags & SEC_DATA && exec_header->exec_dfile == 0) 3809 { 3810 exec_header->exec_dmem = section->vma; 3811 exec_header->exec_dfile = current_offset; 3812 } 3813 3814 /* Keep track of exactly where we are within a particular 3815 space. This is necessary as the braindamaged HPUX 3816 loader will create holes between subspaces *and* 3817 subspace alignments are *NOT* preserved. What a crock. */ 3818 subspace_offset = subsection->vma; 3819 3820 /* Only do this for the first subspace within each space. */ 3821 first_subspace = 0; 3822 } 3823 else if (abfd->flags & (EXEC_P | DYNAMIC)) 3824 { 3825 /* The braindamaged HPUX loader may have created a hole 3826 between two subspaces. It is *not* sufficient to use 3827 the alignment specifications within the subspaces to 3828 account for these holes -- I've run into at least one 3829 case where the loader left one code subspace unaligned 3830 in a final executable. 3831 3832 To combat this we keep a current offset within each space, 3833 and use the subspace vma fields to detect and preserve 3834 holes. What a crock! 3835 3836 ps. This is not necessary for unloadable space/subspaces. */ 3837 current_offset += subsection->vma - subspace_offset; 3838 if (subsection->flags & SEC_CODE) 3839 exec_header->exec_tsize += subsection->vma - subspace_offset; 3840 else 3841 exec_header->exec_dsize += subsection->vma - subspace_offset; 3842 subspace_offset += subsection->vma - subspace_offset; 3843 } 3844 3845 subsection->target_index = total_subspaces++; 3846 /* This is real data to be loaded from the file. */ 3847 if (subsection->flags & SEC_LOAD) 3848 { 3849 /* Update the size of the code & data. */ 3850 if (abfd->flags & (EXEC_P | DYNAMIC) 3851 && subsection->flags & SEC_CODE) 3852 exec_header->exec_tsize += subsection->size; 3853 else if (abfd->flags & (EXEC_P | DYNAMIC) 3854 && subsection->flags & SEC_DATA) 3855 exec_header->exec_dsize += subsection->size; 3856 som_section_data (subsection)->subspace_dict->file_loc_init_value 3857 = current_offset; 3858 subsection->filepos = current_offset; 3859 current_offset += subsection->size; 3860 subspace_offset += subsection->size; 3861 } 3862 /* Looks like uninitialized data. */ 3863 else 3864 { 3865 /* Update the size of the bss section. */ 3866 if (abfd->flags & (EXEC_P | DYNAMIC)) 3867 exec_header->exec_bsize += subsection->size; 3868 3869 som_section_data (subsection)->subspace_dict->file_loc_init_value 3870 = 0; 3871 som_section_data (subsection)->subspace_dict-> 3872 initialization_length = 0; 3873 } 3874 } 3875 /* Goto the next section. */ 3876 section = section->next; 3877 } 3878 3879 /* Finally compute the file positions for unloadable subspaces. 3880 If building an executable, start the unloadable stuff on its 3881 own page. */ 3882 3883 if (abfd->flags & (EXEC_P | DYNAMIC)) 3884 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3885 3886 obj_som_file_hdr (abfd)->unloadable_sp_location = current_offset; 3887 section = abfd->sections; 3888 for (i = 0; i < num_spaces; i++) 3889 { 3890 asection *subsection; 3891 3892 /* Find a space. */ 3893 while (!som_is_space (section)) 3894 section = section->next; 3895 3896 if (abfd->flags & (EXEC_P | DYNAMIC)) 3897 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3898 3899 /* Now look for all its subspaces. */ 3900 for (subsection = abfd->sections; 3901 subsection != NULL; 3902 subsection = subsection->next) 3903 { 3904 3905 if (!som_is_subspace (subsection) 3906 || !som_is_container (section, subsection) 3907 || (subsection->flags & SEC_ALLOC) != 0) 3908 continue; 3909 3910 subsection->target_index = total_subspaces++; 3911 /* This is real data to be loaded from the file. */ 3912 if ((subsection->flags & SEC_LOAD) == 0) 3913 { 3914 som_section_data (subsection)->subspace_dict->file_loc_init_value 3915 = current_offset; 3916 subsection->filepos = current_offset; 3917 current_offset += subsection->size; 3918 } 3919 /* Looks like uninitialized data. */ 3920 else 3921 { 3922 som_section_data (subsection)->subspace_dict->file_loc_init_value 3923 = 0; 3924 som_section_data (subsection)->subspace_dict-> 3925 initialization_length = subsection->size; 3926 } 3927 } 3928 /* Goto the next section. */ 3929 section = section->next; 3930 } 3931 3932 /* If building an executable, then make sure to seek to and write 3933 one byte at the end of the file to make sure any necessary 3934 zeros are filled in. Ugh. */ 3935 if (abfd->flags & (EXEC_P | DYNAMIC)) 3936 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3937 if (bfd_seek (abfd, (file_ptr) current_offset - 1, SEEK_SET) != 0) 3938 return FALSE; 3939 if (bfd_bwrite ((void *) "", (bfd_size_type) 1, abfd) != 1) 3940 return FALSE; 3941 3942 obj_som_file_hdr (abfd)->unloadable_sp_size 3943 = current_offset - obj_som_file_hdr (abfd)->unloadable_sp_location; 3944 3945 /* Loader fixups are not supported in any way shape or form. */ 3946 obj_som_file_hdr (abfd)->loader_fixup_location = 0; 3947 obj_som_file_hdr (abfd)->loader_fixup_total = 0; 3948 3949 /* Done. Store the total size of the SOM so far. */ 3950 obj_som_file_hdr (abfd)->som_length = current_offset; 3951 3952 return TRUE; 3953 } 3954 3955 /* Finally, scribble out the various headers to the disk. */ 3956 3957 static bfd_boolean 3958 som_finish_writing (bfd *abfd) 3959 { 3960 int num_spaces = som_count_spaces (abfd); 3961 asymbol **syms = bfd_get_outsymbols (abfd); 3962 int i, num_syms; 3963 int subspace_index = 0; 3964 file_ptr location; 3965 asection *section; 3966 unsigned long current_offset; 3967 unsigned int strings_size, total_reloc_size; 3968 size_t amt; 3969 struct som_external_header ext_header; 3970 3971 /* We must set up the version identifier here as objcopy/strip copy 3972 private BFD data too late for us to handle this in som_begin_writing. */ 3973 if (obj_som_exec_data (abfd) 3974 && obj_som_exec_data (abfd)->version_id) 3975 obj_som_file_hdr (abfd)->version_id = obj_som_exec_data (abfd)->version_id; 3976 else 3977 obj_som_file_hdr (abfd)->version_id = NEW_VERSION_ID; 3978 3979 /* Next is the symbol table. These are fixed length records. 3980 3981 Count the number of symbols to determine how much room is needed 3982 in the object file for the symbol table. 3983 3984 The names of the symbols are stored in a separate string table, 3985 and the index for each symbol name into the string table is computed 3986 below. Therefore, it is not possible to write the symbol table 3987 at this time. 3988 3989 These used to be output before the subspace contents, but they 3990 were moved here to work around a stupid bug in the hpux linker 3991 (fixed in hpux10). */ 3992 current_offset = obj_som_file_hdr (abfd)->som_length; 3993 3994 /* Make sure we're on a word boundary. */ 3995 if (current_offset % 4) 3996 current_offset += (4 - (current_offset % 4)); 3997 3998 num_syms = bfd_get_symcount (abfd); 3999 obj_som_file_hdr (abfd)->symbol_location = current_offset; 4000 obj_som_file_hdr (abfd)->symbol_total = num_syms; 4001 current_offset += 4002 num_syms * sizeof (struct som_external_symbol_dictionary_record); 4003 4004 /* Next are the symbol strings. 4005 Align them to a word boundary. */ 4006 if (current_offset % 4) 4007 current_offset += (4 - (current_offset % 4)); 4008 obj_som_file_hdr (abfd)->symbol_strings_location = current_offset; 4009 4010 /* Scribble out the symbol strings. */ 4011 if (! som_write_symbol_strings (abfd, current_offset, syms, 4012 num_syms, &strings_size, 4013 obj_som_compilation_unit (abfd))) 4014 return FALSE; 4015 4016 /* Record total string table size in header and update the 4017 current offset. */ 4018 obj_som_file_hdr (abfd)->symbol_strings_size = strings_size; 4019 current_offset += strings_size; 4020 4021 /* Do prep work before handling fixups. */ 4022 if (!som_prep_for_fixups (abfd, 4023 bfd_get_outsymbols (abfd), 4024 bfd_get_symcount (abfd))) 4025 return FALSE; 4026 4027 /* At the end of the file is the fixup stream which starts on a 4028 word boundary. */ 4029 if (current_offset % 4) 4030 current_offset += (4 - (current_offset % 4)); 4031 obj_som_file_hdr (abfd)->fixup_request_location = current_offset; 4032 4033 /* Write the fixups and update fields in subspace headers which 4034 relate to the fixup stream. */ 4035 if (! som_write_fixups (abfd, current_offset, &total_reloc_size)) 4036 return FALSE; 4037 4038 /* Record the total size of the fixup stream in the file header. */ 4039 obj_som_file_hdr (abfd)->fixup_request_total = total_reloc_size; 4040 4041 /* Done. Store the total size of the SOM. */ 4042 obj_som_file_hdr (abfd)->som_length = current_offset + total_reloc_size; 4043 4044 /* Now that the symbol table information is complete, build and 4045 write the symbol table. */ 4046 if (! som_build_and_write_symbol_table (abfd)) 4047 return FALSE; 4048 4049 /* Subspaces are written first so that we can set up information 4050 about them in their containing spaces as the subspace is written. */ 4051 4052 /* Seek to the start of the subspace dictionary records. */ 4053 location = obj_som_file_hdr (abfd)->subspace_location; 4054 if (bfd_seek (abfd, location, SEEK_SET) != 0) 4055 return FALSE; 4056 4057 section = abfd->sections; 4058 /* Now for each loadable space write out records for its subspaces. */ 4059 for (i = 0; i < num_spaces; i++) 4060 { 4061 asection *subsection; 4062 4063 /* Find a space. */ 4064 while (!som_is_space (section)) 4065 section = section->next; 4066 4067 /* Now look for all its subspaces. */ 4068 for (subsection = abfd->sections; 4069 subsection != NULL; 4070 subsection = subsection->next) 4071 { 4072 struct som_external_subspace_dictionary_record ext_subspace_dict; 4073 4074 /* Skip any section which does not correspond to a space 4075 or subspace. Or does not have SEC_ALLOC set (and therefore 4076 has no real bits on the disk). */ 4077 if (!som_is_subspace (subsection) 4078 || !som_is_container (section, subsection) 4079 || (subsection->flags & SEC_ALLOC) == 0) 4080 continue; 4081 4082 /* If this is the first subspace for this space, then save 4083 the index of the subspace in its containing space. Also 4084 set "is_loadable" in the containing space. */ 4085 4086 if (som_section_data (section)->space_dict->subspace_quantity == 0) 4087 { 4088 som_section_data (section)->space_dict->is_loadable = 1; 4089 som_section_data (section)->space_dict->subspace_index 4090 = subspace_index; 4091 } 4092 4093 /* Increment the number of subspaces seen and the number of 4094 subspaces contained within the current space. */ 4095 subspace_index++; 4096 som_section_data (section)->space_dict->subspace_quantity++; 4097 4098 /* Mark the index of the current space within the subspace's 4099 dictionary record. */ 4100 som_section_data (subsection)->subspace_dict->space_index = i; 4101 4102 /* Dump the current subspace header. */ 4103 som_swap_subspace_dictionary_record_out 4104 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict); 4105 amt = sizeof (struct som_subspace_dictionary_record); 4106 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt) 4107 return FALSE; 4108 } 4109 /* Goto the next section. */ 4110 section = section->next; 4111 } 4112 4113 /* Now repeat the process for unloadable subspaces. */ 4114 section = abfd->sections; 4115 /* Now for each space write out records for its subspaces. */ 4116 for (i = 0; i < num_spaces; i++) 4117 { 4118 asection *subsection; 4119 4120 /* Find a space. */ 4121 while (!som_is_space (section)) 4122 section = section->next; 4123 4124 /* Now look for all its subspaces. */ 4125 for (subsection = abfd->sections; 4126 subsection != NULL; 4127 subsection = subsection->next) 4128 { 4129 struct som_external_subspace_dictionary_record ext_subspace_dict; 4130 4131 /* Skip any section which does not correspond to a space or 4132 subspace, or which SEC_ALLOC set (and therefore handled 4133 in the loadable spaces/subspaces code above). */ 4134 4135 if (!som_is_subspace (subsection) 4136 || !som_is_container (section, subsection) 4137 || (subsection->flags & SEC_ALLOC) != 0) 4138 continue; 4139 4140 /* If this is the first subspace for this space, then save 4141 the index of the subspace in its containing space. Clear 4142 "is_loadable". */ 4143 4144 if (som_section_data (section)->space_dict->subspace_quantity == 0) 4145 { 4146 som_section_data (section)->space_dict->is_loadable = 0; 4147 som_section_data (section)->space_dict->subspace_index 4148 = subspace_index; 4149 } 4150 4151 /* Increment the number of subspaces seen and the number of 4152 subspaces contained within the current space. */ 4153 som_section_data (section)->space_dict->subspace_quantity++; 4154 subspace_index++; 4155 4156 /* Mark the index of the current space within the subspace's 4157 dictionary record. */ 4158 som_section_data (subsection)->subspace_dict->space_index = i; 4159 4160 /* Dump this subspace header. */ 4161 som_swap_subspace_dictionary_record_out 4162 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict); 4163 amt = sizeof (struct som_subspace_dictionary_record); 4164 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt) 4165 return FALSE; 4166 } 4167 /* Goto the next section. */ 4168 section = section->next; 4169 } 4170 4171 /* All the subspace dictionary records are written, and all the 4172 fields are set up in the space dictionary records. 4173 4174 Seek to the right location and start writing the space 4175 dictionary records. */ 4176 location = obj_som_file_hdr (abfd)->space_location; 4177 if (bfd_seek (abfd, location, SEEK_SET) != 0) 4178 return FALSE; 4179 4180 section = abfd->sections; 4181 for (i = 0; i < num_spaces; i++) 4182 { 4183 struct som_external_space_dictionary_record ext_space_dict; 4184 4185 /* Find a space. */ 4186 while (!som_is_space (section)) 4187 section = section->next; 4188 4189 /* Dump its header. */ 4190 som_swap_space_dictionary_out (som_section_data (section)->space_dict, 4191 &ext_space_dict); 4192 amt = sizeof (struct som_external_space_dictionary_record); 4193 if (bfd_bwrite (&ext_space_dict, amt, abfd) != amt) 4194 return FALSE; 4195 4196 /* Goto the next section. */ 4197 section = section->next; 4198 } 4199 4200 /* Write the compilation unit record if there is one. */ 4201 if (obj_som_compilation_unit (abfd)) 4202 { 4203 struct som_external_compilation_unit ext_comp_unit; 4204 4205 location = obj_som_file_hdr (abfd)->compiler_location; 4206 if (bfd_seek (abfd, location, SEEK_SET) != 0) 4207 return FALSE; 4208 4209 som_swap_compilation_unit_out 4210 (obj_som_compilation_unit (abfd), &ext_comp_unit); 4211 4212 amt = sizeof (struct som_external_compilation_unit); 4213 if (bfd_bwrite (&ext_comp_unit, amt, abfd) != amt) 4214 return FALSE; 4215 } 4216 4217 /* Setting of the system_id has to happen very late now that copying of 4218 BFD private data happens *after* section contents are set. */ 4219 if (abfd->flags & (EXEC_P | DYNAMIC)) 4220 obj_som_file_hdr (abfd)->system_id = obj_som_exec_data (abfd)->system_id; 4221 else if (bfd_get_mach (abfd) == pa20) 4222 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC2_0; 4223 else if (bfd_get_mach (abfd) == pa11) 4224 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_1; 4225 else 4226 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_0; 4227 4228 /* Swap and compute the checksum for the file header just before writing 4229 the header to disk. */ 4230 som_swap_header_out (obj_som_file_hdr (abfd), &ext_header); 4231 bfd_putb32 (som_compute_checksum (&ext_header), ext_header.checksum); 4232 4233 /* Only thing left to do is write out the file header. It is always 4234 at location zero. Seek there and write it. */ 4235 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 4236 return FALSE; 4237 amt = sizeof (struct som_external_header); 4238 if (bfd_bwrite (&ext_header, amt, abfd) != amt) 4239 return FALSE; 4240 4241 /* Now write the exec header. */ 4242 if (abfd->flags & (EXEC_P | DYNAMIC)) 4243 { 4244 long tmp, som_length; 4245 struct som_exec_auxhdr *exec_header; 4246 struct som_external_exec_auxhdr ext_exec_header; 4247 4248 exec_header = obj_som_exec_hdr (abfd); 4249 exec_header->exec_entry = bfd_get_start_address (abfd); 4250 exec_header->exec_flags = obj_som_exec_data (abfd)->exec_flags; 4251 4252 /* Oh joys. Ram some of the BSS data into the DATA section 4253 to be compatible with how the hp linker makes objects 4254 (saves memory space). */ 4255 tmp = exec_header->exec_dsize; 4256 tmp = SOM_ALIGN (tmp, PA_PAGESIZE); 4257 exec_header->exec_bsize -= (tmp - exec_header->exec_dsize); 4258 if (exec_header->exec_bsize < 0) 4259 exec_header->exec_bsize = 0; 4260 exec_header->exec_dsize = tmp; 4261 4262 /* Now perform some sanity checks. The idea is to catch bogons now and 4263 inform the user, instead of silently generating a bogus file. */ 4264 som_length = obj_som_file_hdr (abfd)->som_length; 4265 if (exec_header->exec_tfile + exec_header->exec_tsize > som_length 4266 || exec_header->exec_dfile + exec_header->exec_dsize > som_length) 4267 { 4268 bfd_set_error (bfd_error_bad_value); 4269 return FALSE; 4270 } 4271 4272 som_swap_exec_auxhdr_out (exec_header, &ext_exec_header); 4273 4274 if (bfd_seek (abfd, obj_som_file_hdr (abfd)->aux_header_location, 4275 SEEK_SET) != 0) 4276 return FALSE; 4277 4278 amt = sizeof (ext_exec_header); 4279 if (bfd_bwrite (&ext_exec_header, amt, abfd) != amt) 4280 return FALSE; 4281 } 4282 return TRUE; 4283 } 4284 4285 /* Compute and return the checksum for a SOM file header. */ 4286 4287 static uint32_t 4288 som_compute_checksum (struct som_external_header *hdr) 4289 { 4290 size_t count, i; 4291 uint32_t checksum; 4292 uint32_t *buffer = (uint32_t *) hdr; 4293 4294 checksum = 0; 4295 count = sizeof (*hdr) / sizeof (*buffer); 4296 for (i = 0; i < count; i++) 4297 checksum ^= *(buffer + i); 4298 4299 return checksum; 4300 } 4301 4302 static void 4303 som_bfd_derive_misc_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, 4304 asymbol *sym, 4305 struct som_misc_symbol_info *info) 4306 { 4307 /* Initialize. */ 4308 memset (info, 0, sizeof (struct som_misc_symbol_info)); 4309 4310 /* The HP SOM linker requires detailed type information about 4311 all symbols (including undefined symbols!). Unfortunately, 4312 the type specified in an import/export statement does not 4313 always match what the linker wants. Severe braindamage. */ 4314 4315 /* Section symbols will not have a SOM symbol type assigned to 4316 them yet. Assign all section symbols type ST_DATA. */ 4317 if (sym->flags & BSF_SECTION_SYM) 4318 info->symbol_type = ST_DATA; 4319 else 4320 { 4321 /* For BFD style common, the linker will choke unless we set the 4322 type and scope to ST_STORAGE and SS_UNSAT, respectively. */ 4323 if (bfd_is_com_section (sym->section)) 4324 { 4325 info->symbol_type = ST_STORAGE; 4326 info->symbol_scope = SS_UNSAT; 4327 } 4328 4329 /* It is possible to have a symbol without an associated 4330 type. This happens if the user imported the symbol 4331 without a type and the symbol was never defined 4332 locally. If BSF_FUNCTION is set for this symbol, then 4333 assign it type ST_CODE (the HP linker requires undefined 4334 external functions to have type ST_CODE rather than ST_ENTRY). */ 4335 else if ((som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN 4336 || som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE) 4337 && bfd_is_und_section (sym->section) 4338 && sym->flags & BSF_FUNCTION) 4339 info->symbol_type = ST_CODE; 4340 4341 /* Handle function symbols which were defined in this file. 4342 They should have type ST_ENTRY. Also retrieve the argument 4343 relocation bits from the SOM backend information. */ 4344 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ENTRY 4345 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE 4346 && (sym->flags & BSF_FUNCTION)) 4347 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN 4348 && (sym->flags & BSF_FUNCTION))) 4349 { 4350 info->symbol_type = ST_ENTRY; 4351 info->arg_reloc = som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc; 4352 info->priv_level= som_symbol_data (sym)->tc_data.ap.hppa_priv_level; 4353 } 4354 4355 /* For unknown symbols set the symbol's type based on the symbol's 4356 section (ST_DATA for DATA sections, ST_CODE for CODE sections). */ 4357 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN) 4358 { 4359 if (bfd_is_abs_section (sym->section)) 4360 info->symbol_type = ST_ABSOLUTE; 4361 else if (sym->section->flags & SEC_CODE) 4362 info->symbol_type = ST_CODE; 4363 else 4364 info->symbol_type = ST_DATA; 4365 } 4366 4367 /* From now on it's a very simple mapping. */ 4368 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ABSOLUTE) 4369 info->symbol_type = ST_ABSOLUTE; 4370 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE) 4371 info->symbol_type = ST_CODE; 4372 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_DATA) 4373 info->symbol_type = ST_DATA; 4374 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_MILLICODE) 4375 info->symbol_type = ST_MILLICODE; 4376 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PLABEL) 4377 info->symbol_type = ST_PLABEL; 4378 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PRI_PROG) 4379 info->symbol_type = ST_PRI_PROG; 4380 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_SEC_PROG) 4381 info->symbol_type = ST_SEC_PROG; 4382 } 4383 4384 /* Now handle the symbol's scope. Exported data which is not 4385 in the common section has scope SS_UNIVERSAL. Note scope 4386 of common symbols was handled earlier! */ 4387 if (bfd_is_com_section (sym->section)) 4388 ; 4389 else if (bfd_is_und_section (sym->section)) 4390 info->symbol_scope = SS_UNSAT; 4391 else if (sym->flags & (BSF_EXPORT | BSF_WEAK)) 4392 info->symbol_scope = SS_UNIVERSAL; 4393 /* Anything else which is not in the common section has scope 4394 SS_LOCAL. */ 4395 else 4396 info->symbol_scope = SS_LOCAL; 4397 4398 /* Now set the symbol_info field. It has no real meaning 4399 for undefined or common symbols, but the HP linker will 4400 choke if it's not set to some "reasonable" value. We 4401 use zero as a reasonable value. */ 4402 if (bfd_is_com_section (sym->section) 4403 || bfd_is_und_section (sym->section) 4404 || bfd_is_abs_section (sym->section)) 4405 info->symbol_info = 0; 4406 /* For all other symbols, the symbol_info field contains the 4407 subspace index of the space this symbol is contained in. */ 4408 else 4409 info->symbol_info = sym->section->target_index; 4410 4411 /* Set the symbol's value. */ 4412 info->symbol_value = sym->value + sym->section->vma; 4413 4414 /* The secondary_def field is for "weak" symbols. */ 4415 if (sym->flags & BSF_WEAK) 4416 info->secondary_def = TRUE; 4417 else 4418 info->secondary_def = FALSE; 4419 4420 /* The is_comdat, is_common and dup_common fields provide various 4421 flavors of common. 4422 4423 For data symbols, setting IS_COMMON provides Fortran style common 4424 (duplicate definitions and overlapped initialization). Setting both 4425 IS_COMMON and DUP_COMMON provides Cobol style common (duplicate 4426 definitions as long as they are all the same length). In a shared 4427 link data symbols retain their IS_COMMON and DUP_COMMON flags. 4428 An IS_COMDAT data symbol is similar to a IS_COMMON | DUP_COMMON 4429 symbol except in that it loses its IS_COMDAT flag in a shared link. 4430 4431 For code symbols, IS_COMDAT and DUP_COMMON have effect. Universal 4432 DUP_COMMON code symbols are not exported from shared libraries. 4433 IS_COMDAT symbols are exported but they lose their IS_COMDAT flag. 4434 4435 We take a simplified approach to setting the is_comdat, is_common 4436 and dup_common flags in symbols based on the flag settings of their 4437 subspace. This avoids having to add directives like `.comdat' but 4438 the linker behavior is probably undefined if there is more than one 4439 universal symbol (comdat key sysmbol) in a subspace. 4440 4441 The behavior of these flags is not well documentmented, so there 4442 may be bugs and some surprising interactions with other flags. */ 4443 if (som_section_data (sym->section) 4444 && som_section_data (sym->section)->subspace_dict 4445 && info->symbol_scope == SS_UNIVERSAL 4446 && (info->symbol_type == ST_ENTRY 4447 || info->symbol_type == ST_CODE 4448 || info->symbol_type == ST_DATA)) 4449 { 4450 info->is_comdat 4451 = som_section_data (sym->section)->subspace_dict->is_comdat; 4452 info->is_common 4453 = som_section_data (sym->section)->subspace_dict->is_common; 4454 info->dup_common 4455 = som_section_data (sym->section)->subspace_dict->dup_common; 4456 } 4457 } 4458 4459 /* Build and write, in one big chunk, the entire symbol table for 4460 this BFD. */ 4461 4462 static bfd_boolean 4463 som_build_and_write_symbol_table (bfd *abfd) 4464 { 4465 unsigned int num_syms = bfd_get_symcount (abfd); 4466 file_ptr symtab_location = obj_som_file_hdr (abfd)->symbol_location; 4467 asymbol **bfd_syms = obj_som_sorted_syms (abfd); 4468 struct som_external_symbol_dictionary_record *som_symtab = NULL; 4469 unsigned int i; 4470 bfd_size_type symtab_size; 4471 size_t amt; 4472 4473 /* Compute total symbol table size and allocate a chunk of memory 4474 to hold the symbol table as we build it. */ 4475 if (_bfd_mul_overflow (num_syms, 4476 sizeof (struct som_external_symbol_dictionary_record), 4477 &amt)) 4478 { 4479 bfd_set_error (bfd_error_no_memory); 4480 return FALSE; 4481 } 4482 som_symtab = bfd_zmalloc (amt); 4483 if (som_symtab == NULL && num_syms != 0) 4484 goto error_return; 4485 4486 /* Walk over each symbol. */ 4487 for (i = 0; i < num_syms; i++) 4488 { 4489 struct som_misc_symbol_info info; 4490 unsigned int flags; 4491 4492 /* This is really an index into the symbol strings table. 4493 By the time we get here, the index has already been 4494 computed and stored into the name field in the BFD symbol. */ 4495 bfd_putb32 (som_symbol_data (bfd_syms[i])->stringtab_offset, 4496 som_symtab[i].name); 4497 4498 /* Derive SOM information from the BFD symbol. */ 4499 som_bfd_derive_misc_symbol_info (abfd, bfd_syms[i], &info); 4500 4501 /* Now use it. */ 4502 flags = (info.symbol_type << SOM_SYMBOL_TYPE_SH) 4503 | (info.symbol_scope << SOM_SYMBOL_SCOPE_SH) 4504 | (info.arg_reloc << SOM_SYMBOL_ARG_RELOC_SH) 4505 | (3 << SOM_SYMBOL_XLEAST_SH) 4506 | (info.secondary_def ? SOM_SYMBOL_SECONDARY_DEF : 0) 4507 | (info.is_common ? SOM_SYMBOL_IS_COMMON : 0) 4508 | (info.dup_common ? SOM_SYMBOL_DUP_COMMON : 0); 4509 bfd_putb32 (flags, som_symtab[i].flags); 4510 4511 flags = (info.symbol_info << SOM_SYMBOL_SYMBOL_INFO_SH) 4512 | (info.is_comdat ? SOM_SYMBOL_IS_COMDAT : 0); 4513 bfd_putb32 (flags, som_symtab[i].info); 4514 bfd_putb32 (info.symbol_value | info.priv_level, 4515 som_symtab[i].symbol_value); 4516 } 4517 4518 /* Everything is ready, seek to the right location and 4519 scribble out the symbol table. */ 4520 if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0) 4521 goto error_return; 4522 4523 symtab_size = num_syms; 4524 symtab_size *= sizeof (struct som_external_symbol_dictionary_record); 4525 if (bfd_bwrite ((void *) som_symtab, symtab_size, abfd) != symtab_size) 4526 goto error_return; 4527 4528 free (som_symtab); 4529 return TRUE; 4530 4531 error_return: 4532 free (som_symtab); 4533 return FALSE; 4534 } 4535 4536 /* Write an object in SOM format. */ 4537 4538 static bfd_boolean 4539 som_write_object_contents (bfd *abfd) 4540 { 4541 if (! abfd->output_has_begun) 4542 { 4543 /* Set up fixed parts of the file, space, and subspace headers. 4544 Notify the world that output has begun. */ 4545 som_prep_headers (abfd); 4546 abfd->output_has_begun = TRUE; 4547 /* Start writing the object file. This include all the string 4548 tables, fixup streams, and other portions of the object file. */ 4549 som_begin_writing (abfd); 4550 } 4551 4552 return som_finish_writing (abfd); 4553 } 4554 4555 /* Read and save the string table associated with the given BFD. */ 4556 4557 static bfd_boolean 4558 som_slurp_string_table (bfd *abfd) 4559 { 4560 char *stringtab; 4561 bfd_size_type amt; 4562 4563 /* Use the saved version if its available. */ 4564 if (obj_som_stringtab (abfd) != NULL) 4565 return TRUE; 4566 4567 /* I don't think this can currently happen, and I'm not sure it should 4568 really be an error, but it's better than getting unpredictable results 4569 from the host's malloc when passed a size of zero. */ 4570 if (obj_som_stringtab_size (abfd) == 0) 4571 { 4572 bfd_set_error (bfd_error_no_symbols); 4573 return FALSE; 4574 } 4575 4576 /* Allocate and read in the string table. */ 4577 if (bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET) != 0) 4578 return FALSE; 4579 amt = obj_som_stringtab_size (abfd); 4580 stringtab = (char *) _bfd_malloc_and_read (abfd, amt, amt); 4581 if (stringtab == NULL) 4582 return FALSE; 4583 4584 /* Save our results and return success. */ 4585 obj_som_stringtab (abfd) = stringtab; 4586 return TRUE; 4587 } 4588 4589 /* Return the amount of data (in bytes) required to hold the symbol 4590 table for this object. */ 4591 4592 static long 4593 som_get_symtab_upper_bound (bfd *abfd) 4594 { 4595 if (!som_slurp_symbol_table (abfd)) 4596 return -1; 4597 4598 return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *); 4599 } 4600 4601 /* Convert from a SOM subspace index to a BFD section. */ 4602 4603 asection * 4604 bfd_section_from_som_symbol 4605 (bfd *abfd, struct som_external_symbol_dictionary_record *symbol) 4606 { 4607 asection *section; 4608 unsigned int flags = bfd_getb32 (symbol->flags); 4609 unsigned int symbol_type = (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK; 4610 4611 /* The meaning of the symbol_info field changes for functions 4612 within executables. So only use the quick symbol_info mapping for 4613 incomplete objects and non-function symbols in executables. */ 4614 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 4615 || (symbol_type != ST_ENTRY 4616 && symbol_type != ST_PRI_PROG 4617 && symbol_type != ST_SEC_PROG 4618 && symbol_type != ST_MILLICODE)) 4619 { 4620 int idx = (bfd_getb32 (symbol->info) >> SOM_SYMBOL_SYMBOL_INFO_SH) 4621 & SOM_SYMBOL_SYMBOL_INFO_MASK; 4622 4623 for (section = abfd->sections; section != NULL; section = section->next) 4624 if (section->target_index == idx && som_is_subspace (section)) 4625 return section; 4626 } 4627 else 4628 { 4629 unsigned int value = bfd_getb32 (symbol->symbol_value); 4630 4631 /* For executables we will have to use the symbol's address and 4632 find out what section would contain that address. Yuk. */ 4633 for (section = abfd->sections; section; section = section->next) 4634 if (value >= section->vma 4635 && value <= section->vma + section->size 4636 && som_is_subspace (section)) 4637 return section; 4638 } 4639 4640 /* Could be a symbol from an external library (such as an OMOS 4641 shared library). Don't abort. */ 4642 return bfd_abs_section_ptr; 4643 } 4644 4645 /* Read and save the symbol table associated with the given BFD. */ 4646 4647 static unsigned int 4648 som_slurp_symbol_table (bfd *abfd) 4649 { 4650 unsigned int symbol_count = bfd_get_symcount (abfd); 4651 size_t symsize = sizeof (struct som_external_symbol_dictionary_record); 4652 char *stringtab; 4653 struct som_external_symbol_dictionary_record *buf = NULL, *bufp, *endbufp; 4654 som_symbol_type *sym, *symbase = NULL; 4655 size_t amt; 4656 4657 /* Return saved value if it exists. */ 4658 if (obj_som_symtab (abfd) != NULL) 4659 goto successful_return; 4660 4661 /* Special case. This is *not* an error. */ 4662 if (symbol_count == 0) 4663 goto successful_return; 4664 4665 if (!som_slurp_string_table (abfd)) 4666 goto error_return; 4667 4668 stringtab = obj_som_stringtab (abfd); 4669 4670 /* Read in the external SOM representation. */ 4671 if (_bfd_mul_overflow (symbol_count, symsize, &amt)) 4672 { 4673 bfd_set_error (bfd_error_file_too_big); 4674 goto error_return; 4675 } 4676 if (bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET) != 0) 4677 goto error_return; 4678 buf = (struct som_external_symbol_dictionary_record *) 4679 _bfd_malloc_and_read (abfd, amt, amt); 4680 if (buf == NULL) 4681 goto error_return; 4682 4683 if (_bfd_mul_overflow (symbol_count, sizeof (som_symbol_type), &amt)) 4684 { 4685 bfd_set_error (bfd_error_file_too_big); 4686 goto error_return; 4687 } 4688 symbase = bfd_zmalloc (amt); 4689 if (symbase == NULL) 4690 goto error_return; 4691 4692 /* Iterate over all the symbols and internalize them. */ 4693 endbufp = buf + symbol_count; 4694 for (bufp = buf, sym = symbase; bufp < endbufp; ++bufp) 4695 { 4696 unsigned int flags = bfd_getb32 (bufp->flags); 4697 unsigned int symbol_type = 4698 (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK; 4699 unsigned int symbol_scope = 4700 (flags >> SOM_SYMBOL_SCOPE_SH) & SOM_SYMBOL_SCOPE_MASK; 4701 4702 /* I don't think we care about these. */ 4703 if (symbol_type == ST_SYM_EXT || symbol_type == ST_ARG_EXT) 4704 continue; 4705 4706 /* Set some private data we care about. */ 4707 if (symbol_type == ST_NULL) 4708 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN; 4709 else if (symbol_type == ST_ABSOLUTE) 4710 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ABSOLUTE; 4711 else if (symbol_type == ST_DATA) 4712 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA; 4713 else if (symbol_type == ST_CODE) 4714 som_symbol_data (sym)->som_type = SYMBOL_TYPE_CODE; 4715 else if (symbol_type == ST_PRI_PROG) 4716 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PRI_PROG; 4717 else if (symbol_type == ST_SEC_PROG) 4718 som_symbol_data (sym)->som_type = SYMBOL_TYPE_SEC_PROG; 4719 else if (symbol_type == ST_ENTRY) 4720 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ENTRY; 4721 else if (symbol_type == ST_MILLICODE) 4722 som_symbol_data (sym)->som_type = SYMBOL_TYPE_MILLICODE; 4723 else if (symbol_type == ST_PLABEL) 4724 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PLABEL; 4725 else 4726 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN; 4727 som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc = 4728 (flags >> SOM_SYMBOL_ARG_RELOC_SH) & SOM_SYMBOL_ARG_RELOC_MASK; 4729 4730 /* Some reasonable defaults. */ 4731 sym->symbol.the_bfd = abfd; 4732 sym->symbol.name = bfd_getb32 (bufp->name) + stringtab; 4733 sym->symbol.value = bfd_getb32 (bufp->symbol_value); 4734 sym->symbol.section = 0; 4735 sym->symbol.flags = 0; 4736 4737 switch (symbol_type) 4738 { 4739 case ST_ENTRY: 4740 case ST_MILLICODE: 4741 sym->symbol.flags |= BSF_FUNCTION; 4742 som_symbol_data (sym)->tc_data.ap.hppa_priv_level = 4743 sym->symbol.value & 0x3; 4744 sym->symbol.value &= ~0x3; 4745 break; 4746 4747 case ST_STUB: 4748 case ST_CODE: 4749 case ST_PRI_PROG: 4750 case ST_SEC_PROG: 4751 som_symbol_data (sym)->tc_data.ap.hppa_priv_level = 4752 sym->symbol.value & 0x3; 4753 sym->symbol.value &= ~0x3; 4754 /* If the symbol's scope is SS_UNSAT, then these are 4755 undefined function symbols. */ 4756 if (symbol_scope == SS_UNSAT) 4757 sym->symbol.flags |= BSF_FUNCTION; 4758 4759 default: 4760 break; 4761 } 4762 4763 /* Handle scoping and section information. */ 4764 switch (symbol_scope) 4765 { 4766 /* symbol_info field is undefined for SS_EXTERNAL and SS_UNSAT symbols, 4767 so the section associated with this symbol can't be known. */ 4768 case SS_EXTERNAL: 4769 if (symbol_type != ST_STORAGE) 4770 sym->symbol.section = bfd_und_section_ptr; 4771 else 4772 sym->symbol.section = bfd_com_section_ptr; 4773 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL); 4774 break; 4775 4776 case SS_UNSAT: 4777 if (symbol_type != ST_STORAGE) 4778 sym->symbol.section = bfd_und_section_ptr; 4779 else 4780 sym->symbol.section = bfd_com_section_ptr; 4781 break; 4782 4783 case SS_UNIVERSAL: 4784 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL); 4785 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp); 4786 sym->symbol.value -= sym->symbol.section->vma; 4787 break; 4788 4789 case SS_LOCAL: 4790 sym->symbol.flags |= BSF_LOCAL; 4791 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp); 4792 sym->symbol.value -= sym->symbol.section->vma; 4793 break; 4794 } 4795 4796 /* Check for a weak symbol. */ 4797 if (flags & SOM_SYMBOL_SECONDARY_DEF) 4798 sym->symbol.flags |= BSF_WEAK; 4799 4800 /* Mark section symbols and symbols used by the debugger. 4801 Note $START$ is a magic code symbol, NOT a section symbol. */ 4802 if (sym->symbol.name[0] == '$' 4803 && sym->symbol.name[strlen (sym->symbol.name) - 1] == '$' 4804 && !strcmp (sym->symbol.name, sym->symbol.section->name)) 4805 sym->symbol.flags |= BSF_SECTION_SYM; 4806 else if (CONST_STRNEQ (sym->symbol.name, "L$0\002")) 4807 { 4808 sym->symbol.flags |= BSF_SECTION_SYM; 4809 sym->symbol.name = sym->symbol.section->name; 4810 } 4811 else if (CONST_STRNEQ (sym->symbol.name, "L$0\001")) 4812 sym->symbol.flags |= BSF_DEBUGGING; 4813 4814 /* Note increment at bottom of loop, since we skip some symbols 4815 we can not include it as part of the for statement. */ 4816 sym++; 4817 } 4818 4819 /* We modify the symbol count to record the number of BFD symbols we 4820 created. */ 4821 abfd->symcount = sym - symbase; 4822 4823 /* Save our results and return success. */ 4824 obj_som_symtab (abfd) = symbase; 4825 successful_return: 4826 free (buf); 4827 return (TRUE); 4828 4829 error_return: 4830 free (symbase); 4831 free (buf); 4832 return FALSE; 4833 } 4834 4835 /* Canonicalize a SOM symbol table. Return the number of entries 4836 in the symbol table. */ 4837 4838 static long 4839 som_canonicalize_symtab (bfd *abfd, asymbol **location) 4840 { 4841 int i; 4842 som_symbol_type *symbase; 4843 4844 if (!som_slurp_symbol_table (abfd)) 4845 return -1; 4846 4847 i = bfd_get_symcount (abfd); 4848 symbase = obj_som_symtab (abfd); 4849 4850 for (; i > 0; i--, location++, symbase++) 4851 *location = &symbase->symbol; 4852 4853 /* Final null pointer. */ 4854 *location = 0; 4855 return (bfd_get_symcount (abfd)); 4856 } 4857 4858 /* Make a SOM symbol. There is nothing special to do here. */ 4859 4860 static asymbol * 4861 som_make_empty_symbol (bfd *abfd) 4862 { 4863 size_t amt = sizeof (som_symbol_type); 4864 som_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt); 4865 4866 if (new_symbol_type == NULL) 4867 return NULL; 4868 new_symbol_type->symbol.the_bfd = abfd; 4869 4870 return &new_symbol_type->symbol; 4871 } 4872 4873 /* Print symbol information. */ 4874 4875 static void 4876 som_print_symbol (bfd *abfd, 4877 void *afile, 4878 asymbol *symbol, 4879 bfd_print_symbol_type how) 4880 { 4881 FILE *file = (FILE *) afile; 4882 4883 switch (how) 4884 { 4885 case bfd_print_symbol_name: 4886 fprintf (file, "%s", symbol->name); 4887 break; 4888 case bfd_print_symbol_more: 4889 fprintf (file, "som "); 4890 fprintf_vma (file, symbol->value); 4891 fprintf (file, " %lx", (long) symbol->flags); 4892 break; 4893 case bfd_print_symbol_all: 4894 { 4895 const char *section_name; 4896 4897 section_name = symbol->section ? symbol->section->name : "(*none*)"; 4898 bfd_print_symbol_vandf (abfd, (void *) file, symbol); 4899 fprintf (file, " %s\t%s", section_name, symbol->name); 4900 break; 4901 } 4902 } 4903 } 4904 4905 static bfd_boolean 4906 som_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, 4907 const char *name) 4908 { 4909 return name[0] == 'L' && name[1] == '$'; 4910 } 4911 4912 /* Count or process variable-length SOM fixup records. 4913 4914 To avoid code duplication we use this code both to compute the number 4915 of relocations requested by a stream, and to internalize the stream. 4916 4917 When computing the number of relocations requested by a stream the 4918 variables rptr, section, and symbols have no meaning. 4919 4920 Return the number of relocations requested by the fixup stream. When 4921 not just counting 4922 4923 This needs at least two or three more passes to get it cleaned up. */ 4924 4925 static unsigned int 4926 som_set_reloc_info (unsigned char *fixup, 4927 unsigned int end, 4928 arelent *internal_relocs, 4929 asection *section, 4930 asymbol **symbols, 4931 bfd_boolean just_count) 4932 { 4933 unsigned int op, varname, deallocate_contents = 0; 4934 unsigned char *end_fixups = &fixup[end]; 4935 const struct fixup_format *fp; 4936 const char *cp; 4937 unsigned char *save_fixup; 4938 int variables[26], stack[20], c, v, count, prev_fixup, *sp, saved_unwind_bits; 4939 const int *subop; 4940 arelent *rptr = internal_relocs; 4941 unsigned int offset = 0; 4942 4943 #define var(c) variables[(c) - 'A'] 4944 #define push(v) (*sp++ = (v)) 4945 #define pop() (*--sp) 4946 #define emptystack() (sp == stack) 4947 4948 som_initialize_reloc_queue (reloc_queue); 4949 memset (variables, 0, sizeof (variables)); 4950 memset (stack, 0, sizeof (stack)); 4951 count = 0; 4952 prev_fixup = 0; 4953 saved_unwind_bits = 0; 4954 sp = stack; 4955 4956 while (fixup < end_fixups) 4957 { 4958 /* Save pointer to the start of this fixup. We'll use 4959 it later to determine if it is necessary to put this fixup 4960 on the queue. */ 4961 save_fixup = fixup; 4962 4963 /* Get the fixup code and its associated format. */ 4964 op = *fixup++; 4965 fp = &som_fixup_formats[op]; 4966 4967 /* Handle a request for a previous fixup. */ 4968 if (*fp->format == 'P') 4969 { 4970 /* Get pointer to the beginning of the prev fixup, move 4971 the repeated fixup to the head of the queue. */ 4972 fixup = reloc_queue[fp->D].reloc; 4973 som_reloc_queue_fix (reloc_queue, fp->D); 4974 prev_fixup = 1; 4975 4976 /* Get the fixup code and its associated format. */ 4977 op = *fixup++; 4978 fp = &som_fixup_formats[op]; 4979 } 4980 4981 /* If this fixup will be passed to BFD, set some reasonable defaults. */ 4982 if (! just_count 4983 && som_hppa_howto_table[op].type != R_NO_RELOCATION 4984 && som_hppa_howto_table[op].type != R_DATA_OVERRIDE) 4985 { 4986 rptr->address = offset; 4987 rptr->howto = &som_hppa_howto_table[op]; 4988 rptr->addend = 0; 4989 rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 4990 } 4991 4992 /* Set default input length to 0. Get the opcode class index 4993 into D. */ 4994 var ('L') = 0; 4995 var ('D') = fp->D; 4996 var ('U') = saved_unwind_bits; 4997 4998 /* Get the opcode format. */ 4999 cp = fp->format; 5000 5001 /* Process the format string. Parsing happens in two phases, 5002 parse RHS, then assign to LHS. Repeat until no more 5003 characters in the format string. */ 5004 while (*cp) 5005 { 5006 /* The variable this pass is going to compute a value for. */ 5007 varname = *cp++; 5008 5009 /* Start processing RHS. Continue until a NULL or '=' is found. */ 5010 do 5011 { 5012 c = *cp++; 5013 5014 /* If this is a variable, push it on the stack. */ 5015 if (ISUPPER (c)) 5016 push (var (c)); 5017 5018 /* If this is a lower case letter, then it represents 5019 additional data from the fixup stream to be pushed onto 5020 the stack. */ 5021 else if (ISLOWER (c)) 5022 { 5023 int bits = (c - 'a') * 8; 5024 for (v = 0; c > 'a'; --c) 5025 v = (v << 8) | *fixup++; 5026 if (varname == 'V') 5027 v = sign_extend (v, bits); 5028 push (v); 5029 } 5030 5031 /* A decimal constant. Push it on the stack. */ 5032 else if (ISDIGIT (c)) 5033 { 5034 v = c - '0'; 5035 while (ISDIGIT (*cp)) 5036 v = (v * 10) + (*cp++ - '0'); 5037 push (v); 5038 } 5039 else 5040 /* An operator. Pop two values from the stack and 5041 use them as operands to the given operation. Push 5042 the result of the operation back on the stack. */ 5043 switch (c) 5044 { 5045 case '+': 5046 v = pop (); 5047 v += pop (); 5048 push (v); 5049 break; 5050 case '*': 5051 v = pop (); 5052 v *= pop (); 5053 push (v); 5054 break; 5055 case '<': 5056 v = pop (); 5057 v = pop () << v; 5058 push (v); 5059 break; 5060 default: 5061 abort (); 5062 } 5063 } 5064 while (*cp && *cp != '='); 5065 5066 /* Move over the equal operator. */ 5067 cp++; 5068 5069 /* Pop the RHS off the stack. */ 5070 c = pop (); 5071 5072 /* Perform the assignment. */ 5073 var (varname) = c; 5074 5075 /* Handle side effects. and special 'O' stack cases. */ 5076 switch (varname) 5077 { 5078 /* Consume some bytes from the input space. */ 5079 case 'L': 5080 offset += c; 5081 break; 5082 /* A symbol to use in the relocation. Make a note 5083 of this if we are not just counting. */ 5084 case 'S': 5085 if (! just_count) 5086 rptr->sym_ptr_ptr = &symbols[c]; 5087 break; 5088 /* Argument relocation bits for a function call. */ 5089 case 'R': 5090 if (! just_count) 5091 { 5092 unsigned int tmp = var ('R'); 5093 rptr->addend = 0; 5094 5095 if ((som_hppa_howto_table[op].type == R_PCREL_CALL 5096 && R_PCREL_CALL + 10 > op) 5097 || (som_hppa_howto_table[op].type == R_ABS_CALL 5098 && R_ABS_CALL + 10 > op)) 5099 { 5100 /* Simple encoding. */ 5101 if (tmp > 4) 5102 { 5103 tmp -= 5; 5104 rptr->addend |= 1; 5105 } 5106 if (tmp == 4) 5107 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2; 5108 else if (tmp == 3) 5109 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4; 5110 else if (tmp == 2) 5111 rptr->addend |= 1 << 8 | 1 << 6; 5112 else if (tmp == 1) 5113 rptr->addend |= 1 << 8; 5114 } 5115 else 5116 { 5117 unsigned int tmp1, tmp2; 5118 5119 /* First part is easy -- low order two bits are 5120 directly copied, then shifted away. */ 5121 rptr->addend = tmp & 0x3; 5122 tmp >>= 2; 5123 5124 /* Diving the result by 10 gives us the second 5125 part. If it is 9, then the first two words 5126 are a double precision paramater, else it is 5127 3 * the first arg bits + the 2nd arg bits. */ 5128 tmp1 = tmp / 10; 5129 tmp -= tmp1 * 10; 5130 if (tmp1 == 9) 5131 rptr->addend += (0xe << 6); 5132 else 5133 { 5134 /* Get the two pieces. */ 5135 tmp2 = tmp1 / 3; 5136 tmp1 -= tmp2 * 3; 5137 /* Put them in the addend. */ 5138 rptr->addend += (tmp2 << 8) + (tmp1 << 6); 5139 } 5140 5141 /* What's left is the third part. It's unpacked 5142 just like the second. */ 5143 if (tmp == 9) 5144 rptr->addend += (0xe << 2); 5145 else 5146 { 5147 tmp2 = tmp / 3; 5148 tmp -= tmp2 * 3; 5149 rptr->addend += (tmp2 << 4) + (tmp << 2); 5150 } 5151 } 5152 rptr->addend = HPPA_R_ADDEND (rptr->addend, 0); 5153 } 5154 break; 5155 /* Handle the linker expression stack. */ 5156 case 'O': 5157 switch (op) 5158 { 5159 case R_COMP1: 5160 subop = comp1_opcodes; 5161 break; 5162 case R_COMP2: 5163 subop = comp2_opcodes; 5164 break; 5165 case R_COMP3: 5166 subop = comp3_opcodes; 5167 break; 5168 default: 5169 abort (); 5170 } 5171 while (*subop <= (unsigned char) c) 5172 ++subop; 5173 --subop; 5174 break; 5175 /* The lower 32unwind bits must be persistent. */ 5176 case 'U': 5177 saved_unwind_bits = var ('U'); 5178 break; 5179 5180 default: 5181 break; 5182 } 5183 } 5184 5185 /* If we used a previous fixup, clean up after it. */ 5186 if (prev_fixup) 5187 { 5188 fixup = save_fixup + 1; 5189 prev_fixup = 0; 5190 } 5191 /* Queue it. */ 5192 else if (fixup > save_fixup + 1) 5193 som_reloc_queue_insert (save_fixup, fixup - save_fixup, reloc_queue); 5194 5195 /* We do not pass R_DATA_OVERRIDE or R_NO_RELOCATION 5196 fixups to BFD. */ 5197 if (som_hppa_howto_table[op].type != R_DATA_OVERRIDE 5198 && som_hppa_howto_table[op].type != R_NO_RELOCATION) 5199 { 5200 /* Done with a single reloction. Loop back to the top. */ 5201 if (! just_count) 5202 { 5203 if (som_hppa_howto_table[op].type == R_ENTRY) 5204 rptr->addend = var ('T'); 5205 else if (som_hppa_howto_table[op].type == R_EXIT) 5206 rptr->addend = var ('U'); 5207 else if (som_hppa_howto_table[op].type == R_PCREL_CALL 5208 || som_hppa_howto_table[op].type == R_ABS_CALL) 5209 ; 5210 else if (som_hppa_howto_table[op].type == R_DATA_ONE_SYMBOL) 5211 { 5212 /* Try what was specified in R_DATA_OVERRIDE first 5213 (if anything). Then the hard way using the 5214 section contents. */ 5215 rptr->addend = var ('V'); 5216 5217 if (rptr->addend == 0 && !section->contents) 5218 { 5219 /* Got to read the damn contents first. We don't 5220 bother saving the contents (yet). Add it one 5221 day if the need arises. */ 5222 bfd_byte *contents; 5223 if (!bfd_malloc_and_get_section (section->owner, section, 5224 &contents)) 5225 { 5226 free (contents); 5227 return (unsigned) -1; 5228 } 5229 section->contents = contents; 5230 deallocate_contents = 1; 5231 } 5232 else if (rptr->addend == 0) 5233 rptr->addend = bfd_get_32 (section->owner, 5234 (section->contents 5235 + offset - var ('L'))); 5236 5237 } 5238 else 5239 rptr->addend = var ('V'); 5240 rptr++; 5241 } 5242 count++; 5243 /* Now that we've handled a "full" relocation, reset 5244 some state. */ 5245 memset (variables, 0, sizeof (variables)); 5246 memset (stack, 0, sizeof (stack)); 5247 } 5248 } 5249 if (deallocate_contents) 5250 free (section->contents); 5251 5252 return count; 5253 5254 #undef var 5255 #undef push 5256 #undef pop 5257 #undef emptystack 5258 } 5259 5260 /* Read in the relocs (aka fixups in SOM terms) for a section. 5261 5262 som_get_reloc_upper_bound calls this routine with JUST_COUNT 5263 set to TRUE to indicate it only needs a count of the number 5264 of actual relocations. */ 5265 5266 static bfd_boolean 5267 som_slurp_reloc_table (bfd *abfd, 5268 asection *section, 5269 asymbol **symbols, 5270 bfd_boolean just_count) 5271 { 5272 unsigned char *external_relocs; 5273 unsigned int fixup_stream_size; 5274 arelent *internal_relocs; 5275 unsigned int num_relocs; 5276 size_t amt; 5277 5278 fixup_stream_size = som_section_data (section)->reloc_size; 5279 /* If there were no relocations, then there is nothing to do. */ 5280 if (section->reloc_count == 0) 5281 return TRUE; 5282 5283 /* If reloc_count is -1, then the relocation stream has not been 5284 parsed. We must do so now to know how many relocations exist. */ 5285 if (section->reloc_count == (unsigned) -1) 5286 { 5287 /* Read in the external forms. */ 5288 if (bfd_seek (abfd, obj_som_reloc_filepos (abfd) + section->rel_filepos, 5289 SEEK_SET) != 0) 5290 return FALSE; 5291 amt = fixup_stream_size; 5292 external_relocs = _bfd_malloc_and_read (abfd, amt, amt); 5293 if (external_relocs == NULL) 5294 return FALSE; 5295 5296 /* Let callers know how many relocations found. 5297 also save the relocation stream as we will 5298 need it again. */ 5299 section->reloc_count = som_set_reloc_info (external_relocs, 5300 fixup_stream_size, 5301 NULL, NULL, NULL, TRUE); 5302 5303 som_section_data (section)->reloc_stream = external_relocs; 5304 } 5305 5306 /* If the caller only wanted a count, then return now. */ 5307 if (just_count) 5308 return TRUE; 5309 5310 num_relocs = section->reloc_count; 5311 external_relocs = som_section_data (section)->reloc_stream; 5312 /* Return saved information about the relocations if it is available. */ 5313 if (section->relocation != NULL) 5314 return TRUE; 5315 5316 if (_bfd_mul_overflow (num_relocs, sizeof (arelent), &amt)) 5317 { 5318 bfd_set_error (bfd_error_file_too_big); 5319 return FALSE; 5320 } 5321 internal_relocs = bfd_zalloc (abfd, amt); 5322 if (internal_relocs == NULL) 5323 return FALSE; 5324 5325 /* Process and internalize the relocations. */ 5326 som_set_reloc_info (external_relocs, fixup_stream_size, 5327 internal_relocs, section, symbols, FALSE); 5328 5329 /* We're done with the external relocations. Free them. */ 5330 free (external_relocs); 5331 som_section_data (section)->reloc_stream = NULL; 5332 5333 /* Save our results and return success. */ 5334 section->relocation = internal_relocs; 5335 return TRUE; 5336 } 5337 5338 /* Return the number of bytes required to store the relocation 5339 information associated with the given section. */ 5340 5341 static long 5342 som_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) 5343 { 5344 /* If section has relocations, then read in the relocation stream 5345 and parse it to determine how many relocations exist. */ 5346 if (asect->flags & SEC_RELOC) 5347 { 5348 if (! som_slurp_reloc_table (abfd, asect, NULL, TRUE)) 5349 return -1; 5350 return (asect->reloc_count + 1) * sizeof (arelent *); 5351 } 5352 5353 /* There are no relocations. Return enough space to hold the 5354 NULL pointer which will be installed if som_canonicalize_reloc 5355 is called. */ 5356 return sizeof (arelent *); 5357 } 5358 5359 /* Convert relocations from SOM (external) form into BFD internal 5360 form. Return the number of relocations. */ 5361 5362 static long 5363 som_canonicalize_reloc (bfd *abfd, 5364 sec_ptr section, 5365 arelent **relptr, 5366 asymbol **symbols) 5367 { 5368 arelent *tblptr; 5369 int count; 5370 5371 if (! som_slurp_reloc_table (abfd, section, symbols, FALSE)) 5372 return -1; 5373 5374 count = section->reloc_count; 5375 tblptr = section->relocation; 5376 5377 while (count--) 5378 *relptr++ = tblptr++; 5379 5380 *relptr = NULL; 5381 return section->reloc_count; 5382 } 5383 5384 extern const bfd_target hppa_som_vec; 5385 5386 /* A hook to set up object file dependent section information. */ 5387 5388 static bfd_boolean 5389 som_new_section_hook (bfd *abfd, asection *newsect) 5390 { 5391 if (!newsect->used_by_bfd) 5392 { 5393 size_t amt = sizeof (struct som_section_data_struct); 5394 5395 newsect->used_by_bfd = bfd_zalloc (abfd, amt); 5396 if (!newsect->used_by_bfd) 5397 return FALSE; 5398 } 5399 newsect->alignment_power = 3; 5400 5401 /* We allow more than three sections internally. */ 5402 return _bfd_generic_new_section_hook (abfd, newsect); 5403 } 5404 5405 /* Copy any private info we understand from the input symbol 5406 to the output symbol. */ 5407 5408 static bfd_boolean 5409 som_bfd_copy_private_symbol_data (bfd *ibfd, 5410 asymbol *isymbol, 5411 bfd *obfd, 5412 asymbol *osymbol) 5413 { 5414 struct som_symbol *input_symbol = (struct som_symbol *) isymbol; 5415 struct som_symbol *output_symbol = (struct som_symbol *) osymbol; 5416 5417 /* One day we may try to grok other private data. */ 5418 if (ibfd->xvec->flavour != bfd_target_som_flavour 5419 || obfd->xvec->flavour != bfd_target_som_flavour) 5420 return FALSE; 5421 5422 /* The only private information we need to copy is the argument relocation 5423 bits. */ 5424 output_symbol->tc_data.ap.hppa_arg_reloc = 5425 input_symbol->tc_data.ap.hppa_arg_reloc; 5426 5427 return TRUE; 5428 } 5429 5430 /* Copy any private info we understand from the input section 5431 to the output section. */ 5432 5433 static bfd_boolean 5434 som_bfd_copy_private_section_data (bfd *ibfd, 5435 asection *isection, 5436 bfd *obfd, 5437 asection *osection) 5438 { 5439 size_t amt; 5440 5441 /* One day we may try to grok other private data. */ 5442 if (ibfd->xvec->flavour != bfd_target_som_flavour 5443 || obfd->xvec->flavour != bfd_target_som_flavour 5444 || (!som_is_space (isection) && !som_is_subspace (isection))) 5445 return TRUE; 5446 5447 amt = sizeof (struct som_copyable_section_data_struct); 5448 som_section_data (osection)->copy_data = bfd_zalloc (obfd, amt); 5449 if (som_section_data (osection)->copy_data == NULL) 5450 return FALSE; 5451 5452 memcpy (som_section_data (osection)->copy_data, 5453 som_section_data (isection)->copy_data, 5454 sizeof (struct som_copyable_section_data_struct)); 5455 5456 /* Reparent if necessary. */ 5457 if (som_section_data (osection)->copy_data->container) 5458 { 5459 if (som_section_data (osection)->copy_data->container->output_section) 5460 som_section_data (osection)->copy_data->container = 5461 som_section_data (osection)->copy_data->container->output_section; 5462 else 5463 { 5464 /* User has specified a subspace without its containing space. */ 5465 _bfd_error_handler (_("%pB[%pA]: no output section for space %pA"), 5466 obfd, osection, som_section_data (osection)->copy_data->container); 5467 return FALSE; 5468 } 5469 } 5470 5471 return TRUE; 5472 } 5473 5474 /* Copy any private info we understand from the input bfd 5475 to the output bfd. */ 5476 5477 static bfd_boolean 5478 som_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) 5479 { 5480 /* One day we may try to grok other private data. */ 5481 if (ibfd->xvec->flavour != bfd_target_som_flavour 5482 || obfd->xvec->flavour != bfd_target_som_flavour) 5483 return TRUE; 5484 5485 /* Allocate some memory to hold the data we need. */ 5486 obj_som_exec_data (obfd) = bfd_zalloc (obfd, (bfd_size_type) sizeof (struct som_exec_data)); 5487 if (obj_som_exec_data (obfd) == NULL) 5488 return FALSE; 5489 5490 /* Now copy the data. */ 5491 memcpy (obj_som_exec_data (obfd), obj_som_exec_data (ibfd), 5492 sizeof (struct som_exec_data)); 5493 5494 return TRUE; 5495 } 5496 5497 /* Display the SOM header. */ 5498 5499 static bfd_boolean 5500 som_bfd_print_private_bfd_data (bfd *abfd, void *farg) 5501 { 5502 struct som_exec_auxhdr *exec_header; 5503 struct som_aux_id* auxhdr; 5504 FILE *f; 5505 5506 f = (FILE *) farg; 5507 5508 exec_header = obj_som_exec_hdr (abfd); 5509 if (exec_header) 5510 { 5511 fprintf (f, _("\nExec Auxiliary Header\n")); 5512 fprintf (f, " flags "); 5513 auxhdr = &exec_header->som_auxhdr; 5514 if (auxhdr->mandatory) 5515 fprintf (f, "mandatory "); 5516 if (auxhdr->copy) 5517 fprintf (f, "copy "); 5518 if (auxhdr->append) 5519 fprintf (f, "append "); 5520 if (auxhdr->ignore) 5521 fprintf (f, "ignore "); 5522 fprintf (f, "\n"); 5523 fprintf (f, " type %#x\n", auxhdr->type); 5524 fprintf (f, " length %#x\n", auxhdr->length); 5525 5526 /* Note that, depending on the HP-UX version, the following fields can be 5527 either ints, or longs. */ 5528 5529 fprintf (f, " text size %#lx\n", (long) exec_header->exec_tsize); 5530 fprintf (f, " text memory offset %#lx\n", (long) exec_header->exec_tmem); 5531 fprintf (f, " text file offset %#lx\n", (long) exec_header->exec_tfile); 5532 fprintf (f, " data size %#lx\n", (long) exec_header->exec_dsize); 5533 fprintf (f, " data memory offset %#lx\n", (long) exec_header->exec_dmem); 5534 fprintf (f, " data file offset %#lx\n", (long) exec_header->exec_dfile); 5535 fprintf (f, " bss size %#lx\n", (long) exec_header->exec_bsize); 5536 fprintf (f, " entry point %#lx\n", (long) exec_header->exec_entry); 5537 fprintf (f, " loader flags %#lx\n", (long) exec_header->exec_flags); 5538 fprintf (f, " bss initializer %#lx\n", (long) exec_header->exec_bfill); 5539 } 5540 5541 return TRUE; 5542 } 5543 5544 /* Set backend info for sections which can not be described 5545 in the BFD data structures. */ 5546 5547 bfd_boolean 5548 bfd_som_set_section_attributes (asection *section, 5549 int defined, 5550 int private, 5551 unsigned int sort_key, 5552 int spnum) 5553 { 5554 /* Allocate memory to hold the magic information. */ 5555 if (som_section_data (section)->copy_data == NULL) 5556 { 5557 size_t amt = sizeof (struct som_copyable_section_data_struct); 5558 5559 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt); 5560 if (som_section_data (section)->copy_data == NULL) 5561 return FALSE; 5562 } 5563 som_section_data (section)->copy_data->sort_key = sort_key; 5564 som_section_data (section)->copy_data->is_defined = defined; 5565 som_section_data (section)->copy_data->is_private = private; 5566 som_section_data (section)->copy_data->container = section; 5567 som_section_data (section)->copy_data->space_number = spnum; 5568 return TRUE; 5569 } 5570 5571 /* Set backend info for subsections which can not be described 5572 in the BFD data structures. */ 5573 5574 bfd_boolean 5575 bfd_som_set_subsection_attributes (asection *section, 5576 asection *container, 5577 int access_ctr, 5578 unsigned int sort_key, 5579 int quadrant, 5580 int comdat, 5581 int common, 5582 int dup_common) 5583 { 5584 /* Allocate memory to hold the magic information. */ 5585 if (som_section_data (section)->copy_data == NULL) 5586 { 5587 size_t amt = sizeof (struct som_copyable_section_data_struct); 5588 5589 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt); 5590 if (som_section_data (section)->copy_data == NULL) 5591 return FALSE; 5592 } 5593 som_section_data (section)->copy_data->sort_key = sort_key; 5594 som_section_data (section)->copy_data->access_control_bits = access_ctr; 5595 som_section_data (section)->copy_data->quadrant = quadrant; 5596 som_section_data (section)->copy_data->container = container; 5597 som_section_data (section)->copy_data->is_comdat = comdat; 5598 som_section_data (section)->copy_data->is_common = common; 5599 som_section_data (section)->copy_data->dup_common = dup_common; 5600 return TRUE; 5601 } 5602 5603 /* Set the full SOM symbol type. SOM needs far more symbol information 5604 than any other object file format I'm aware of. It is mandatory 5605 to be able to know if a symbol is an entry point, millicode, data, 5606 code, absolute, storage request, or procedure label. If you get 5607 the symbol type wrong your program will not link. */ 5608 5609 void 5610 bfd_som_set_symbol_type (asymbol *symbol, unsigned int type) 5611 { 5612 som_symbol_data (symbol)->som_type = type; 5613 } 5614 5615 /* Attach an auxiliary header to the BFD backend so that it may be 5616 written into the object file. */ 5617 5618 bfd_boolean 5619 bfd_som_attach_aux_hdr (bfd *abfd, int type, char *string) 5620 { 5621 size_t amt; 5622 5623 if (type == VERSION_AUX_ID) 5624 { 5625 size_t len = strlen (string); 5626 int pad = 0; 5627 5628 if (len % 4) 5629 pad = (4 - (len % 4)); 5630 amt = sizeof (struct som_string_auxhdr) + len + pad; 5631 obj_som_version_hdr (abfd) = bfd_zalloc (abfd, amt); 5632 if (!obj_som_version_hdr (abfd)) 5633 return FALSE; 5634 obj_som_version_hdr (abfd)->header_id.type = VERSION_AUX_ID; 5635 obj_som_version_hdr (abfd)->header_id.length = 4 + len + pad; 5636 obj_som_version_hdr (abfd)->string_length = len; 5637 memcpy (obj_som_version_hdr (abfd)->string, string, len); 5638 memset (obj_som_version_hdr (abfd)->string + len, 0, pad); 5639 } 5640 else if (type == COPYRIGHT_AUX_ID) 5641 { 5642 size_t len = strlen (string); 5643 int pad = 0; 5644 5645 if (len % 4) 5646 pad = (4 - (len % 4)); 5647 amt = sizeof (struct som_string_auxhdr) + len + pad; 5648 obj_som_copyright_hdr (abfd) = bfd_zalloc (abfd, amt); 5649 if (!obj_som_copyright_hdr (abfd)) 5650 return FALSE; 5651 obj_som_copyright_hdr (abfd)->header_id.type = COPYRIGHT_AUX_ID; 5652 obj_som_copyright_hdr (abfd)->header_id.length = len + pad + 4; 5653 obj_som_copyright_hdr (abfd)->string_length = len; 5654 memcpy (obj_som_copyright_hdr (abfd)->string, string, len); 5655 memset (obj_som_copyright_hdr (abfd)->string + len, 0, pad); 5656 } 5657 return TRUE; 5658 } 5659 5660 /* Attach a compilation unit header to the BFD backend so that it may be 5661 written into the object file. */ 5662 5663 bfd_boolean 5664 bfd_som_attach_compilation_unit (bfd *abfd, 5665 const char *name, 5666 const char *language_name, 5667 const char *product_id, 5668 const char *version_id) 5669 { 5670 struct som_compilation_unit *n; 5671 5672 n = (struct som_compilation_unit *) bfd_zalloc 5673 (abfd, (bfd_size_type) sizeof (*n)); 5674 if (n == NULL) 5675 return FALSE; 5676 5677 #define STRDUP(f) \ 5678 if (f != NULL) \ 5679 { \ 5680 n->f.name = bfd_alloc (abfd, (bfd_size_type) strlen (f) + 1); \ 5681 if (n->f.name == NULL) \ 5682 return FALSE; \ 5683 strcpy (n->f.name, f); \ 5684 } 5685 5686 STRDUP (name); 5687 STRDUP (language_name); 5688 STRDUP (product_id); 5689 STRDUP (version_id); 5690 5691 #undef STRDUP 5692 5693 obj_som_compilation_unit (abfd) = n; 5694 5695 return TRUE; 5696 } 5697 5698 static bfd_boolean 5699 som_get_section_contents (bfd *abfd, 5700 sec_ptr section, 5701 void *location, 5702 file_ptr offset, 5703 bfd_size_type count) 5704 { 5705 if (count == 0 || ((section->flags & SEC_HAS_CONTENTS) == 0)) 5706 return TRUE; 5707 if ((bfd_size_type) (offset+count) > section->size 5708 || bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0 5709 || bfd_bread (location, count, abfd) != count) 5710 return FALSE; /* On error. */ 5711 return TRUE; 5712 } 5713 5714 static bfd_boolean 5715 som_set_section_contents (bfd *abfd, 5716 sec_ptr section, 5717 const void *location, 5718 file_ptr offset, 5719 bfd_size_type count) 5720 { 5721 if (! abfd->output_has_begun) 5722 { 5723 /* Set up fixed parts of the file, space, and subspace headers. 5724 Notify the world that output has begun. */ 5725 som_prep_headers (abfd); 5726 abfd->output_has_begun = TRUE; 5727 /* Start writing the object file. This include all the string 5728 tables, fixup streams, and other portions of the object file. */ 5729 som_begin_writing (abfd); 5730 } 5731 5732 /* Only write subspaces which have "real" contents (eg. the contents 5733 are not generated at run time by the OS). */ 5734 if (!som_is_subspace (section) 5735 || ((section->flags & SEC_HAS_CONTENTS) == 0)) 5736 return TRUE; 5737 5738 /* Seek to the proper offset within the object file and write the 5739 data. */ 5740 offset += som_section_data (section)->subspace_dict->file_loc_init_value; 5741 if (bfd_seek (abfd, offset, SEEK_SET) != 0) 5742 return FALSE; 5743 5744 if (bfd_bwrite (location, count, abfd) != count) 5745 return FALSE; 5746 return TRUE; 5747 } 5748 5749 static bfd_boolean 5750 som_set_arch_mach (bfd *abfd, 5751 enum bfd_architecture arch, 5752 unsigned long machine) 5753 { 5754 /* Allow any architecture to be supported by the SOM backend. */ 5755 return bfd_default_set_arch_mach (abfd, arch, machine); 5756 } 5757 5758 static bfd_boolean 5759 som_find_nearest_line (bfd *abfd, 5760 asymbol **symbols, 5761 asection *section, 5762 bfd_vma offset, 5763 const char **filename_ptr, 5764 const char **functionname_ptr, 5765 unsigned int *line_ptr, 5766 unsigned int *discriminator_ptr) 5767 { 5768 bfd_boolean found; 5769 asymbol *func; 5770 bfd_vma low_func; 5771 asymbol **p; 5772 5773 if (discriminator_ptr) 5774 *discriminator_ptr = 0; 5775 5776 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, 5777 & found, filename_ptr, 5778 functionname_ptr, line_ptr, 5779 & somdata (abfd).line_info)) 5780 return FALSE; 5781 5782 if (found) 5783 return TRUE; 5784 5785 if (symbols == NULL) 5786 return FALSE; 5787 5788 /* Fallback: find function name from symbols table. */ 5789 func = NULL; 5790 low_func = 0; 5791 5792 for (p = symbols; *p != NULL; p++) 5793 { 5794 som_symbol_type *q = (som_symbol_type *) *p; 5795 5796 if (q->som_type == SYMBOL_TYPE_ENTRY 5797 && q->symbol.section == section 5798 && q->symbol.value >= low_func 5799 && q->symbol.value <= offset) 5800 { 5801 func = (asymbol *) q; 5802 low_func = q->symbol.value; 5803 } 5804 } 5805 5806 if (func == NULL) 5807 return FALSE; 5808 5809 *filename_ptr = NULL; 5810 *functionname_ptr = bfd_asymbol_name (func); 5811 *line_ptr = 0; 5812 5813 return TRUE; 5814 } 5815 5816 static int 5817 som_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, 5818 struct bfd_link_info *info ATTRIBUTE_UNUSED) 5819 { 5820 _bfd_error_handler (_("som_sizeof_headers unimplemented")); 5821 abort (); 5822 return 0; 5823 } 5824 5825 /* Return the single-character symbol type corresponding to 5826 SOM section S, or '?' for an unknown SOM section. */ 5827 5828 static char 5829 som_section_type (const char *s) 5830 { 5831 const struct section_to_type *t; 5832 5833 for (t = &stt[0]; t->section; t++) 5834 if (!strcmp (s, t->section)) 5835 return t->type; 5836 return '?'; 5837 } 5838 5839 static int 5840 som_decode_symclass (asymbol *symbol) 5841 { 5842 char c; 5843 5844 if (bfd_is_com_section (symbol->section)) 5845 return 'C'; 5846 if (bfd_is_und_section (symbol->section)) 5847 { 5848 if (symbol->flags & BSF_WEAK) 5849 { 5850 /* If weak, determine if it's specifically an object 5851 or non-object weak. */ 5852 if (symbol->flags & BSF_OBJECT) 5853 return 'v'; 5854 else 5855 return 'w'; 5856 } 5857 else 5858 return 'U'; 5859 } 5860 if (bfd_is_ind_section (symbol->section)) 5861 return 'I'; 5862 if (symbol->flags & BSF_WEAK) 5863 { 5864 /* If weak, determine if it's specifically an object 5865 or non-object weak. */ 5866 if (symbol->flags & BSF_OBJECT) 5867 return 'V'; 5868 else 5869 return 'W'; 5870 } 5871 if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL))) 5872 return '?'; 5873 5874 if (bfd_is_abs_section (symbol->section) 5875 || (som_symbol_data (symbol) != NULL 5876 && som_symbol_data (symbol)->som_type == SYMBOL_TYPE_ABSOLUTE)) 5877 c = 'a'; 5878 else if (symbol->section) 5879 c = som_section_type (symbol->section->name); 5880 else 5881 return '?'; 5882 if (symbol->flags & BSF_GLOBAL) 5883 c = TOUPPER (c); 5884 return c; 5885 } 5886 5887 /* Return information about SOM symbol SYMBOL in RET. */ 5888 5889 static void 5890 som_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED, 5891 asymbol *symbol, 5892 symbol_info *ret) 5893 { 5894 ret->type = som_decode_symclass (symbol); 5895 if (ret->type != 'U') 5896 ret->value = symbol->value + symbol->section->vma; 5897 else 5898 ret->value = 0; 5899 ret->name = symbol->name; 5900 } 5901 5902 /* Count the number of symbols in the archive symbol table. Necessary 5903 so that we can allocate space for all the carsyms at once. */ 5904 5905 static bfd_boolean 5906 som_bfd_count_ar_symbols (bfd *abfd, 5907 struct som_lst_header *lst_header, 5908 symindex *count) 5909 { 5910 unsigned int i; 5911 unsigned char *hash_table; 5912 size_t amt; 5913 file_ptr lst_filepos; 5914 5915 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header); 5916 5917 /* Read in the hash table. The hash table is an array of 32-bit 5918 file offsets which point to the hash chains. */ 5919 if (_bfd_mul_overflow (lst_header->hash_size, 4, &amt)) 5920 { 5921 bfd_set_error (bfd_error_file_too_big); 5922 return FALSE; 5923 } 5924 hash_table = _bfd_malloc_and_read (abfd, amt, amt); 5925 if (hash_table == NULL && lst_header->hash_size != 0) 5926 goto error_return; 5927 5928 /* Don't forget to initialize the counter! */ 5929 *count = 0; 5930 5931 /* Walk each chain counting the number of symbols found on that particular 5932 chain. */ 5933 for (i = 0; i < lst_header->hash_size; i++) 5934 { 5935 struct som_external_lst_symbol_record ext_lst_symbol; 5936 unsigned int hash_val = bfd_getb32 (hash_table + 4 * i); 5937 5938 /* An empty chain has zero as it's file offset. */ 5939 if (hash_val == 0) 5940 continue; 5941 5942 /* Seek to the first symbol in this hash chain. */ 5943 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0) 5944 goto error_return; 5945 5946 /* Read in this symbol and update the counter. */ 5947 amt = sizeof (ext_lst_symbol); 5948 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt) 5949 goto error_return; 5950 5951 (*count)++; 5952 5953 /* Now iterate through the rest of the symbols on this chain. */ 5954 while (1) 5955 { 5956 unsigned int next_entry = bfd_getb32 (ext_lst_symbol.next_entry); 5957 5958 if (next_entry == 0) 5959 break; 5960 5961 /* Assume symbols on a chain are in increasing file offset 5962 order. Otherwise we can loop here with fuzzed input. */ 5963 if (next_entry < hash_val + sizeof (ext_lst_symbol)) 5964 { 5965 bfd_set_error (bfd_error_bad_value); 5966 goto error_return; 5967 } 5968 hash_val = next_entry; 5969 5970 /* Seek to the next symbol. */ 5971 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0) 5972 goto error_return; 5973 5974 /* Read the symbol in and update the counter. */ 5975 amt = sizeof (ext_lst_symbol); 5976 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt) 5977 goto error_return; 5978 5979 (*count)++; 5980 } 5981 } 5982 free (hash_table); 5983 return TRUE; 5984 5985 error_return: 5986 free (hash_table); 5987 return FALSE; 5988 } 5989 5990 /* Fill in the canonical archive symbols (SYMS) from the archive described 5991 by ABFD and LST_HEADER. */ 5992 5993 static bfd_boolean 5994 som_bfd_fill_in_ar_symbols (bfd *abfd, 5995 struct som_lst_header *lst_header, 5996 carsym **syms) 5997 { 5998 unsigned int i; 5999 carsym *set = syms[0]; 6000 unsigned char *hash_table; 6001 struct som_external_som_entry *som_dict = NULL; 6002 size_t amt; 6003 file_ptr lst_filepos; 6004 unsigned int string_loc; 6005 6006 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header); 6007 6008 /* Read in the hash table. The has table is an array of 32bit file offsets 6009 which point to the hash chains. */ 6010 if (_bfd_mul_overflow (lst_header->hash_size, 4, &amt)) 6011 { 6012 bfd_set_error (bfd_error_file_too_big); 6013 return FALSE; 6014 } 6015 hash_table = _bfd_malloc_and_read (abfd, amt, amt); 6016 if (hash_table == NULL && lst_header->hash_size != 0) 6017 goto error_return; 6018 6019 /* Seek to and read in the SOM dictionary. We will need this to fill 6020 in the carsym's filepos field. */ 6021 if (bfd_seek (abfd, lst_filepos + lst_header->dir_loc, SEEK_SET) != 0) 6022 goto error_return; 6023 6024 if (_bfd_mul_overflow (lst_header->module_count, 6025 sizeof (struct som_external_som_entry), &amt)) 6026 { 6027 bfd_set_error (bfd_error_file_too_big); 6028 goto error_return; 6029 } 6030 som_dict = (struct som_external_som_entry *) 6031 _bfd_malloc_and_read (abfd, amt, amt); 6032 if (som_dict == NULL && lst_header->module_count != 0) 6033 goto error_return; 6034 6035 string_loc = lst_header->string_loc; 6036 6037 /* Walk each chain filling in the carsyms as we go along. */ 6038 for (i = 0; i < lst_header->hash_size; i++) 6039 { 6040 struct som_external_lst_symbol_record lst_symbol; 6041 unsigned int hash_val; 6042 size_t len; 6043 unsigned char ext_len[4]; 6044 char *name; 6045 unsigned int ndx; 6046 6047 /* An empty chain has zero as it's file offset. */ 6048 hash_val = bfd_getb32 (hash_table + 4 * i); 6049 if (hash_val == 0) 6050 continue; 6051 6052 /* Seek to and read the first symbol on the chain. */ 6053 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0) 6054 goto error_return; 6055 6056 amt = sizeof (lst_symbol); 6057 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt) 6058 goto error_return; 6059 6060 /* Get the name of the symbol, first get the length which is stored 6061 as a 32bit integer just before the symbol. 6062 6063 One might ask why we don't just read in the entire string table 6064 and index into it. Well, according to the SOM ABI the string 6065 index can point *anywhere* in the archive to save space, so just 6066 using the string table would not be safe. */ 6067 if (bfd_seek (abfd, (lst_filepos + string_loc 6068 + bfd_getb32 (lst_symbol.name) - 4), SEEK_SET) != 0) 6069 goto error_return; 6070 6071 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4) 6072 goto error_return; 6073 len = bfd_getb32 (ext_len); 6074 6075 /* Allocate space for the name and null terminate it too. */ 6076 if (len == (size_t) -1) 6077 { 6078 bfd_set_error (bfd_error_no_memory); 6079 goto error_return; 6080 } 6081 name = (char *) _bfd_alloc_and_read (abfd, len + 1, len); 6082 if (!name) 6083 goto error_return; 6084 name[len] = 0; 6085 set->name = name; 6086 6087 /* Fill in the file offset. Note that the "location" field points 6088 to the SOM itself, not the ar_hdr in front of it. */ 6089 ndx = bfd_getb32 (lst_symbol.som_index); 6090 if (ndx >= lst_header->module_count) 6091 { 6092 bfd_set_error (bfd_error_bad_value); 6093 goto error_return; 6094 } 6095 set->file_offset 6096 = bfd_getb32 (som_dict[ndx].location) - sizeof (struct ar_hdr); 6097 6098 /* Go to the next symbol. */ 6099 set++; 6100 6101 /* Iterate through the rest of the chain. */ 6102 while (1) 6103 { 6104 unsigned int next_entry = bfd_getb32 (lst_symbol.next_entry); 6105 6106 if (next_entry == 0) 6107 break; 6108 6109 /* Seek to the next symbol and read it in. */ 6110 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0) 6111 goto error_return; 6112 6113 amt = sizeof (lst_symbol); 6114 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt) 6115 goto error_return; 6116 6117 /* Seek to the name length & string and read them in. */ 6118 if (bfd_seek (abfd, lst_filepos + string_loc 6119 + bfd_getb32 (lst_symbol.name) - 4, SEEK_SET) != 0) 6120 goto error_return; 6121 6122 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4) 6123 goto error_return; 6124 len = bfd_getb32 (ext_len); 6125 6126 /* Allocate space for the name and null terminate it too. */ 6127 if (len == (size_t) -1) 6128 { 6129 bfd_set_error (bfd_error_no_memory); 6130 goto error_return; 6131 } 6132 name = (char *) _bfd_alloc_and_read (abfd, len + 1, len); 6133 if (!name) 6134 goto error_return; 6135 name[len] = 0; 6136 set->name = name; 6137 6138 /* Fill in the file offset. Note that the "location" field points 6139 to the SOM itself, not the ar_hdr in front of it. */ 6140 ndx = bfd_getb32 (lst_symbol.som_index); 6141 if (ndx >= lst_header->module_count) 6142 { 6143 bfd_set_error (bfd_error_bad_value); 6144 goto error_return; 6145 } 6146 set->file_offset 6147 = bfd_getb32 (som_dict[ndx].location) - sizeof (struct ar_hdr); 6148 6149 /* Go on to the next symbol. */ 6150 set++; 6151 } 6152 } 6153 /* If we haven't died by now, then we successfully read the entire 6154 archive symbol table. */ 6155 free (hash_table); 6156 free (som_dict); 6157 return TRUE; 6158 6159 error_return: 6160 free (hash_table); 6161 free (som_dict); 6162 return FALSE; 6163 } 6164 6165 /* Read in the LST from the archive. */ 6166 6167 static bfd_boolean 6168 som_slurp_armap (bfd *abfd) 6169 { 6170 struct som_external_lst_header ext_lst_header; 6171 struct som_lst_header lst_header; 6172 struct ar_hdr ar_header; 6173 unsigned int parsed_size; 6174 struct artdata *ardata = bfd_ardata (abfd); 6175 char nextname[17]; 6176 size_t amt = 16; 6177 int i = bfd_bread ((void *) nextname, amt, abfd); 6178 6179 /* Special cases. */ 6180 if (i == 0) 6181 return TRUE; 6182 if (i != 16) 6183 return FALSE; 6184 6185 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) 6186 return FALSE; 6187 6188 /* For archives without .o files there is no symbol table. */ 6189 if (! CONST_STRNEQ (nextname, "/ ")) 6190 { 6191 abfd->has_armap = FALSE; 6192 return TRUE; 6193 } 6194 6195 /* Read in and sanity check the archive header. */ 6196 amt = sizeof (struct ar_hdr); 6197 if (bfd_bread ((void *) &ar_header, amt, abfd) != amt) 6198 return FALSE; 6199 6200 if (strncmp (ar_header.ar_fmag, ARFMAG, 2)) 6201 { 6202 bfd_set_error (bfd_error_malformed_archive); 6203 return FALSE; 6204 } 6205 6206 /* How big is the archive symbol table entry? */ 6207 errno = 0; 6208 parsed_size = strtol (ar_header.ar_size, NULL, 10); 6209 if (errno != 0) 6210 { 6211 bfd_set_error (bfd_error_malformed_archive); 6212 return FALSE; 6213 } 6214 6215 /* Save off the file offset of the first real user data. */ 6216 ardata->first_file_filepos = bfd_tell (abfd) + parsed_size; 6217 6218 /* Read in the library symbol table. We'll make heavy use of this 6219 in just a minute. */ 6220 amt = sizeof (struct som_external_lst_header); 6221 if (bfd_bread ((void *) &ext_lst_header, amt, abfd) != amt) 6222 return FALSE; 6223 6224 som_swap_lst_header_in (&ext_lst_header, &lst_header); 6225 6226 /* Sanity check. */ 6227 if (lst_header.a_magic != LIBMAGIC) 6228 { 6229 bfd_set_error (bfd_error_malformed_archive); 6230 return FALSE; 6231 } 6232 6233 /* Count the number of symbols in the library symbol table. */ 6234 if (! som_bfd_count_ar_symbols (abfd, &lst_header, &ardata->symdef_count)) 6235 return FALSE; 6236 6237 /* Get back to the start of the library symbol table. */ 6238 if (bfd_seek (abfd, (ardata->first_file_filepos - parsed_size 6239 + sizeof (struct som_external_lst_header)), 6240 SEEK_SET) != 0) 6241 return FALSE; 6242 6243 /* Initialize the cache and allocate space for the library symbols. */ 6244 ardata->cache = 0; 6245 if (_bfd_mul_overflow (ardata->symdef_count, sizeof (carsym), &amt)) 6246 { 6247 bfd_set_error (bfd_error_file_too_big); 6248 return FALSE; 6249 } 6250 ardata->symdefs = bfd_alloc (abfd, amt); 6251 if (!ardata->symdefs) 6252 return FALSE; 6253 6254 /* Now fill in the canonical archive symbols. */ 6255 if (! som_bfd_fill_in_ar_symbols (abfd, &lst_header, &ardata->symdefs)) 6256 return FALSE; 6257 6258 /* Seek back to the "first" file in the archive. Note the "first" 6259 file may be the extended name table. */ 6260 if (bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET) != 0) 6261 return FALSE; 6262 6263 /* Notify the generic archive code that we have a symbol map. */ 6264 abfd->has_armap = TRUE; 6265 return TRUE; 6266 } 6267 6268 /* Begin preparing to write a SOM library symbol table. 6269 6270 As part of the prep work we need to determine the number of symbols 6271 and the size of the associated string section. */ 6272 6273 static bfd_boolean 6274 som_bfd_prep_for_ar_write (bfd *abfd, 6275 unsigned int *num_syms, 6276 unsigned int *stringsize) 6277 { 6278 bfd *curr_bfd = abfd->archive_head; 6279 6280 /* Some initialization. */ 6281 *num_syms = 0; 6282 *stringsize = 0; 6283 6284 /* Iterate over each BFD within this archive. */ 6285 while (curr_bfd != NULL) 6286 { 6287 unsigned int curr_count, i; 6288 som_symbol_type *sym; 6289 6290 /* Don't bother for non-SOM objects. */ 6291 if (curr_bfd->format != bfd_object 6292 || curr_bfd->xvec->flavour != bfd_target_som_flavour) 6293 { 6294 curr_bfd = curr_bfd->archive_next; 6295 continue; 6296 } 6297 6298 /* Make sure the symbol table has been read, then snag a pointer 6299 to it. It's a little slimey to grab the symbols via obj_som_symtab, 6300 but doing so avoids allocating lots of extra memory. */ 6301 if (! som_slurp_symbol_table (curr_bfd)) 6302 return FALSE; 6303 6304 sym = obj_som_symtab (curr_bfd); 6305 curr_count = bfd_get_symcount (curr_bfd); 6306 6307 /* Examine each symbol to determine if it belongs in the 6308 library symbol table. */ 6309 for (i = 0; i < curr_count; i++, sym++) 6310 { 6311 struct som_misc_symbol_info info; 6312 6313 /* Derive SOM information from the BFD symbol. */ 6314 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info); 6315 6316 /* Should we include this symbol? */ 6317 if (info.symbol_type == ST_NULL 6318 || info.symbol_type == ST_SYM_EXT 6319 || info.symbol_type == ST_ARG_EXT) 6320 continue; 6321 6322 /* Only global symbols and unsatisfied commons. */ 6323 if (info.symbol_scope != SS_UNIVERSAL 6324 && info.symbol_type != ST_STORAGE) 6325 continue; 6326 6327 /* Do no include undefined symbols. */ 6328 if (bfd_is_und_section (sym->symbol.section)) 6329 continue; 6330 6331 /* Bump the various counters, being careful to honor 6332 alignment considerations in the string table. */ 6333 (*num_syms)++; 6334 *stringsize += strlen (sym->symbol.name) + 5; 6335 while (*stringsize % 4) 6336 (*stringsize)++; 6337 } 6338 6339 curr_bfd = curr_bfd->archive_next; 6340 } 6341 return TRUE; 6342 } 6343 6344 /* Hash a symbol name based on the hashing algorithm presented in the 6345 SOM ABI. */ 6346 6347 static unsigned int 6348 som_bfd_ar_symbol_hash (asymbol *symbol) 6349 { 6350 unsigned int len = strlen (symbol->name); 6351 6352 /* Names with length 1 are special. */ 6353 if (len == 1) 6354 return 0x1000100 | (symbol->name[0] << 16) | symbol->name[0]; 6355 6356 return ((len & 0x7f) << 24) | (symbol->name[1] << 16) 6357 | (symbol->name[len - 2] << 8) | symbol->name[len - 1]; 6358 } 6359 6360 /* Do the bulk of the work required to write the SOM library 6361 symbol table. */ 6362 6363 static bfd_boolean 6364 som_bfd_ar_write_symbol_stuff (bfd *abfd, 6365 unsigned int nsyms, 6366 unsigned int string_size, 6367 struct som_external_lst_header lst, 6368 unsigned elength) 6369 { 6370 char *strings = NULL, *p; 6371 struct som_external_lst_symbol_record *lst_syms = NULL, *curr_lst_sym; 6372 bfd *curr_bfd; 6373 unsigned char *hash_table = NULL; 6374 struct som_external_som_entry *som_dict = NULL; 6375 struct som_external_lst_symbol_record **last_hash_entry = NULL; 6376 unsigned int curr_som_offset, som_index = 0; 6377 size_t amt; 6378 unsigned int module_count; 6379 unsigned int hash_size; 6380 6381 hash_size = bfd_getb32 (lst.hash_size); 6382 if (_bfd_mul_overflow (hash_size, 4, &amt)) 6383 { 6384 bfd_set_error (bfd_error_no_memory); 6385 return FALSE; 6386 } 6387 hash_table = bfd_zmalloc (amt); 6388 if (hash_table == NULL && hash_size != 0) 6389 goto error_return; 6390 6391 module_count = bfd_getb32 (lst.module_count); 6392 if (_bfd_mul_overflow (module_count, 6393 sizeof (struct som_external_som_entry), &amt)) 6394 { 6395 bfd_set_error (bfd_error_no_memory); 6396 goto error_return; 6397 } 6398 som_dict = bfd_zmalloc (amt); 6399 if (som_dict == NULL && module_count != 0) 6400 goto error_return; 6401 6402 if (_bfd_mul_overflow (hash_size, 6403 sizeof (struct som_external_lst_symbol_record *), 6404 &amt)) 6405 { 6406 bfd_set_error (bfd_error_no_memory); 6407 goto error_return; 6408 } 6409 last_hash_entry = bfd_zmalloc (amt); 6410 if (last_hash_entry == NULL && hash_size != 0) 6411 goto error_return; 6412 6413 /* Symbols have som_index fields, so we have to keep track of the 6414 index of each SOM in the archive. 6415 6416 The SOM dictionary has (among other things) the absolute file 6417 position for the SOM which a particular dictionary entry 6418 describes. We have to compute that information as we iterate 6419 through the SOMs/symbols. */ 6420 som_index = 0; 6421 6422 /* We add in the size of the archive header twice as the location 6423 in the SOM dictionary is the actual offset of the SOM, not the 6424 archive header before the SOM. */ 6425 curr_som_offset = 8 + 2 * sizeof (struct ar_hdr) + bfd_getb32 (lst.file_end); 6426 6427 /* Make room for the archive header and the contents of the 6428 extended string table. Note that elength includes the size 6429 of the archive header for the extended name table! */ 6430 if (elength) 6431 curr_som_offset += elength; 6432 6433 /* Make sure we're properly aligned. */ 6434 curr_som_offset = (curr_som_offset + 0x1) & ~0x1; 6435 6436 /* FIXME should be done with buffers just like everything else... */ 6437 if (_bfd_mul_overflow (nsyms, 6438 sizeof (struct som_external_lst_symbol_record), &amt)) 6439 { 6440 bfd_set_error (bfd_error_no_memory); 6441 goto error_return; 6442 } 6443 lst_syms = bfd_malloc (amt); 6444 if (lst_syms == NULL && nsyms != 0) 6445 goto error_return; 6446 strings = bfd_malloc (string_size); 6447 if (strings == NULL && string_size != 0) 6448 goto error_return; 6449 6450 p = strings; 6451 curr_lst_sym = lst_syms; 6452 6453 curr_bfd = abfd->archive_head; 6454 while (curr_bfd != NULL) 6455 { 6456 unsigned int curr_count, i; 6457 som_symbol_type *sym; 6458 6459 /* Don't bother for non-SOM objects. */ 6460 if (curr_bfd->format != bfd_object 6461 || curr_bfd->xvec->flavour != bfd_target_som_flavour) 6462 { 6463 curr_bfd = curr_bfd->archive_next; 6464 continue; 6465 } 6466 6467 /* Make sure the symbol table has been read, then snag a pointer 6468 to it. It's a little slimey to grab the symbols via obj_som_symtab, 6469 but doing so avoids allocating lots of extra memory. */ 6470 if (! som_slurp_symbol_table (curr_bfd)) 6471 goto error_return; 6472 6473 sym = obj_som_symtab (curr_bfd); 6474 curr_count = bfd_get_symcount (curr_bfd); 6475 6476 for (i = 0; i < curr_count; i++, sym++) 6477 { 6478 struct som_misc_symbol_info info; 6479 struct som_external_lst_symbol_record *last; 6480 unsigned int symbol_pos; 6481 unsigned int slen; 6482 unsigned int symbol_key; 6483 unsigned int flags; 6484 6485 /* Derive SOM information from the BFD symbol. */ 6486 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info); 6487 6488 /* Should we include this symbol? */ 6489 if (info.symbol_type == ST_NULL 6490 || info.symbol_type == ST_SYM_EXT 6491 || info.symbol_type == ST_ARG_EXT) 6492 continue; 6493 6494 /* Only global symbols and unsatisfied commons. */ 6495 if (info.symbol_scope != SS_UNIVERSAL 6496 && info.symbol_type != ST_STORAGE) 6497 continue; 6498 6499 /* Do no include undefined symbols. */ 6500 if (bfd_is_und_section (sym->symbol.section)) 6501 continue; 6502 6503 /* If this is the first symbol from this SOM, then update 6504 the SOM dictionary too. */ 6505 if (bfd_getb32 (som_dict[som_index].location) == 0) 6506 { 6507 bfd_putb32 (curr_som_offset, som_dict[som_index].location); 6508 bfd_putb32 (arelt_size (curr_bfd), som_dict[som_index].length); 6509 } 6510 6511 symbol_key = som_bfd_ar_symbol_hash (&sym->symbol); 6512 6513 /* Fill in the lst symbol record. */ 6514 flags = 0; 6515 if (info.secondary_def) 6516 flags |= LST_SYMBOL_SECONDARY_DEF; 6517 flags |= info.symbol_type << LST_SYMBOL_SYMBOL_TYPE_SH; 6518 flags |= info.symbol_scope << LST_SYMBOL_SYMBOL_SCOPE_SH; 6519 if (bfd_is_com_section (sym->symbol.section)) 6520 flags |= LST_SYMBOL_IS_COMMON; 6521 if (info.dup_common) 6522 flags |= LST_SYMBOL_DUP_COMMON; 6523 flags |= 3 << LST_SYMBOL_XLEAST_SH; 6524 flags |= info.arg_reloc << LST_SYMBOL_ARG_RELOC_SH; 6525 bfd_putb32 (flags, curr_lst_sym->flags); 6526 bfd_putb32 (p - strings + 4, curr_lst_sym->name); 6527 bfd_putb32 (0, curr_lst_sym->qualifier_name); 6528 bfd_putb32 (info.symbol_info, curr_lst_sym->symbol_info); 6529 bfd_putb32 (info.symbol_value | info.priv_level, 6530 curr_lst_sym->symbol_value); 6531 bfd_putb32 (0, curr_lst_sym->symbol_descriptor); 6532 curr_lst_sym->reserved = 0; 6533 bfd_putb32 (som_index, curr_lst_sym->som_index); 6534 bfd_putb32 (symbol_key, curr_lst_sym->symbol_key); 6535 bfd_putb32 (0, curr_lst_sym->next_entry); 6536 6537 /* Insert into the hash table. */ 6538 symbol_pos = 6539 (curr_lst_sym - lst_syms) 6540 * sizeof (struct som_external_lst_symbol_record) 6541 + hash_size * 4 6542 + module_count * sizeof (struct som_external_som_entry) 6543 + sizeof (struct som_external_lst_header); 6544 last = last_hash_entry[symbol_key % hash_size]; 6545 if (last != NULL) 6546 { 6547 /* There is already something at the head of this hash chain, 6548 so tack this symbol onto the end of the chain. */ 6549 bfd_putb32 (symbol_pos, last->next_entry); 6550 } 6551 else 6552 /* First entry in this hash chain. */ 6553 bfd_putb32 (symbol_pos, hash_table + 4 * (symbol_key % hash_size)); 6554 6555 /* Keep track of the last symbol we added to this chain so we can 6556 easily update its next_entry pointer. */ 6557 last_hash_entry[symbol_key % hash_size] = curr_lst_sym; 6558 6559 /* Update the string table. */ 6560 slen = strlen (sym->symbol.name); 6561 bfd_put_32 (abfd, slen, p); 6562 p += 4; 6563 slen++; /* Nul terminator. */ 6564 memcpy (p, sym->symbol.name, slen); 6565 p += slen; 6566 while (slen % 4) 6567 { 6568 bfd_put_8 (abfd, 0, p); 6569 p++; 6570 slen++; 6571 } 6572 BFD_ASSERT (p <= strings + string_size); 6573 6574 /* Head to the next symbol. */ 6575 curr_lst_sym++; 6576 } 6577 6578 /* Keep track of where each SOM will finally reside; then look 6579 at the next BFD. */ 6580 curr_som_offset += arelt_size (curr_bfd) + sizeof (struct ar_hdr); 6581 6582 /* A particular object in the archive may have an odd length; the 6583 linker requires objects begin on an even boundary. So round 6584 up the current offset as necessary. */ 6585 curr_som_offset = (curr_som_offset + 0x1) &~ (unsigned) 1; 6586 curr_bfd = curr_bfd->archive_next; 6587 som_index++; 6588 } 6589 6590 /* Now scribble out the hash table. */ 6591 amt = (size_t) hash_size * 4; 6592 if (bfd_bwrite ((void *) hash_table, amt, abfd) != amt) 6593 goto error_return; 6594 6595 /* Then the SOM dictionary. */ 6596 amt = (size_t) module_count * sizeof (struct som_external_som_entry); 6597 if (bfd_bwrite ((void *) som_dict, amt, abfd) != amt) 6598 goto error_return; 6599 6600 /* The library symbols. */ 6601 amt = (size_t) nsyms * sizeof (struct som_external_lst_symbol_record); 6602 if (bfd_bwrite ((void *) lst_syms, amt, abfd) != amt) 6603 goto error_return; 6604 6605 /* And finally the strings. */ 6606 amt = string_size; 6607 if (bfd_bwrite ((void *) strings, amt, abfd) != amt) 6608 goto error_return; 6609 6610 free (hash_table); 6611 free (som_dict); 6612 free (last_hash_entry); 6613 free (lst_syms); 6614 free (strings); 6615 return TRUE; 6616 6617 error_return: 6618 free (hash_table); 6619 free (som_dict); 6620 free (last_hash_entry); 6621 free (lst_syms); 6622 free (strings); 6623 6624 return FALSE; 6625 } 6626 6627 /* Write out the LST for the archive. 6628 6629 You'll never believe this is really how armaps are handled in SOM... */ 6630 6631 static bfd_boolean 6632 som_write_armap (bfd *abfd, 6633 unsigned int elength, 6634 struct orl *map ATTRIBUTE_UNUSED, 6635 unsigned int orl_count ATTRIBUTE_UNUSED, 6636 int stridx ATTRIBUTE_UNUSED) 6637 { 6638 bfd *curr_bfd; 6639 struct stat statbuf; 6640 unsigned int i, lst_size, nsyms, stringsize; 6641 struct ar_hdr hdr; 6642 struct som_external_lst_header lst; 6643 unsigned char *p; 6644 size_t amt; 6645 unsigned int csum; 6646 unsigned int module_count; 6647 6648 /* We'll use this for the archive's date and mode later. */ 6649 if (stat (bfd_get_filename (abfd), &statbuf) != 0) 6650 { 6651 bfd_set_error (bfd_error_system_call); 6652 return FALSE; 6653 } 6654 /* Fudge factor. */ 6655 bfd_ardata (abfd)->armap_timestamp = statbuf.st_mtime + 60; 6656 6657 /* Account for the lst header first. */ 6658 lst_size = sizeof (struct som_external_lst_header); 6659 6660 /* Start building the LST header. */ 6661 /* FIXME: Do we need to examine each element to determine the 6662 largest id number? */ 6663 bfd_putb16 (CPU_PA_RISC1_0, &lst.system_id); 6664 bfd_putb16 (LIBMAGIC, &lst.a_magic); 6665 bfd_putb32 (VERSION_ID, &lst.version_id); 6666 bfd_putb32 (0, &lst.file_time.secs); 6667 bfd_putb32 (0, &lst.file_time.nanosecs); 6668 6669 bfd_putb32 (lst_size, &lst.hash_loc); 6670 bfd_putb32 (SOM_LST_HASH_SIZE, &lst.hash_size); 6671 6672 /* Hash table is a SOM_LST_HASH_SIZE 32bit offsets. */ 6673 lst_size += 4 * SOM_LST_HASH_SIZE; 6674 6675 /* We need to count the number of SOMs in this archive. */ 6676 curr_bfd = abfd->archive_head; 6677 module_count = 0; 6678 while (curr_bfd != NULL) 6679 { 6680 /* Only true SOM objects count. */ 6681 if (curr_bfd->format == bfd_object 6682 && curr_bfd->xvec->flavour == bfd_target_som_flavour) 6683 module_count++; 6684 curr_bfd = curr_bfd->archive_next; 6685 } 6686 bfd_putb32 (module_count, &lst.module_count); 6687 bfd_putb32 (module_count, &lst.module_limit); 6688 bfd_putb32 (lst_size, &lst.dir_loc); 6689 lst_size += sizeof (struct som_external_som_entry) * module_count; 6690 6691 /* We don't support import/export tables, auxiliary headers, 6692 or free lists yet. Make the linker work a little harder 6693 to make our life easier. */ 6694 6695 bfd_putb32 (0, &lst.export_loc); 6696 bfd_putb32 (0, &lst.export_count); 6697 bfd_putb32 (0, &lst.import_loc); 6698 bfd_putb32 (0, &lst.aux_loc); 6699 bfd_putb32 (0, &lst.aux_size); 6700 6701 /* Count how many symbols we will have on the hash chains and the 6702 size of the associated string table. */ 6703 if (! som_bfd_prep_for_ar_write (abfd, &nsyms, &stringsize)) 6704 return FALSE; 6705 6706 lst_size += sizeof (struct som_external_lst_symbol_record) * nsyms; 6707 6708 /* For the string table. One day we might actually use this info 6709 to avoid small seeks/reads when reading archives. */ 6710 bfd_putb32 (lst_size, &lst.string_loc); 6711 bfd_putb32 (stringsize, &lst.string_size); 6712 lst_size += stringsize; 6713 6714 /* SOM ABI says this must be zero. */ 6715 bfd_putb32 (0, &lst.free_list); 6716 bfd_putb32 (lst_size, &lst.file_end); 6717 6718 /* Compute the checksum. Must happen after the entire lst header 6719 has filled in. */ 6720 p = (unsigned char *) &lst; 6721 csum = 0; 6722 for (i = 0; i < sizeof (struct som_external_lst_header) - sizeof (int); 6723 i += 4) 6724 csum ^= bfd_getb32 (&p[i]); 6725 bfd_putb32 (csum, &lst.checksum); 6726 6727 sprintf (hdr.ar_name, "/ "); 6728 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%-12ld", 6729 bfd_ardata (abfd)->armap_timestamp); 6730 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 6731 statbuf.st_uid); 6732 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 6733 statbuf.st_gid); 6734 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-8o", 6735 (unsigned int)statbuf.st_mode); 6736 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10d", 6737 (int) lst_size); 6738 hdr.ar_fmag[0] = '`'; 6739 hdr.ar_fmag[1] = '\012'; 6740 6741 /* Turn any nulls into spaces. */ 6742 for (i = 0; i < sizeof (struct ar_hdr); i++) 6743 if (((char *) (&hdr))[i] == '\0') 6744 (((char *) (&hdr))[i]) = ' '; 6745 6746 /* Scribble out the ar header. */ 6747 amt = sizeof (struct ar_hdr); 6748 if (bfd_bwrite ((void *) &hdr, amt, abfd) != amt) 6749 return FALSE; 6750 6751 /* Now scribble out the lst header. */ 6752 amt = sizeof (struct som_external_lst_header); 6753 if (bfd_bwrite ((void *) &lst, amt, abfd) != amt) 6754 return FALSE; 6755 6756 /* Build and write the armap. */ 6757 if (!som_bfd_ar_write_symbol_stuff (abfd, nsyms, stringsize, lst, elength)) 6758 return FALSE; 6759 6760 /* Done. */ 6761 return TRUE; 6762 } 6763 6764 /* Free all information we have cached for this BFD. We can always 6765 read it again later if we need it. */ 6766 6767 static bfd_boolean 6768 som_bfd_free_cached_info (bfd *abfd) 6769 { 6770 if (bfd_get_format (abfd) == bfd_object) 6771 { 6772 asection *o; 6773 6774 #define FREE(x) do { free (x); x = NULL; } while (0) 6775 /* Free the native string and symbol tables. */ 6776 FREE (obj_som_symtab (abfd)); 6777 FREE (obj_som_stringtab (abfd)); 6778 for (o = abfd->sections; o != NULL; o = o->next) 6779 { 6780 /* Free the native relocations. */ 6781 o->reloc_count = (unsigned) -1; 6782 FREE (som_section_data (o)->reloc_stream); 6783 /* Do not free the generic relocations as they are objalloc'ed. */ 6784 } 6785 #undef FREE 6786 } 6787 6788 return _bfd_generic_close_and_cleanup (abfd); 6789 } 6790 6791 /* End of miscellaneous support functions. */ 6792 6793 /* Linker support functions. */ 6794 6795 static bfd_boolean 6796 som_bfd_link_split_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) 6797 { 6798 return som_is_subspace (sec) && sec->size > 240000; 6799 } 6800 6801 #define som_find_line _bfd_nosymbols_find_line 6802 #define som_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string 6803 #define som_close_and_cleanup som_bfd_free_cached_info 6804 #define som_read_ar_hdr _bfd_generic_read_ar_hdr 6805 #define som_write_ar_hdr _bfd_generic_write_ar_hdr 6806 #define som_openr_next_archived_file bfd_generic_openr_next_archived_file 6807 #define som_get_elt_at_index _bfd_generic_get_elt_at_index 6808 #define som_generic_stat_arch_elt bfd_generic_stat_arch_elt 6809 #define som_truncate_arname bfd_bsd_truncate_arname 6810 #define som_slurp_extended_name_table _bfd_slurp_extended_name_table 6811 #define som_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table 6812 #define som_update_armap_timestamp _bfd_bool_bfd_true 6813 #define som_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false 6814 #define som_get_lineno _bfd_nosymbols_get_lineno 6815 #define som_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol 6816 #define som_read_minisymbols _bfd_generic_read_minisymbols 6817 #define som_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol 6818 #define som_get_section_contents_in_window _bfd_generic_get_section_contents_in_window 6819 #define som_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents 6820 #define som_bfd_relax_section bfd_generic_relax_section 6821 #define som_bfd_link_hash_table_create _bfd_generic_link_hash_table_create 6822 #define som_bfd_link_add_symbols _bfd_generic_link_add_symbols 6823 #define som_bfd_link_just_syms _bfd_generic_link_just_syms 6824 #define som_bfd_copy_link_hash_symbol_type \ 6825 _bfd_generic_copy_link_hash_symbol_type 6826 #define som_bfd_final_link _bfd_generic_final_link 6827 #define som_bfd_gc_sections bfd_generic_gc_sections 6828 #define som_bfd_lookup_section_flags bfd_generic_lookup_section_flags 6829 #define som_bfd_merge_sections bfd_generic_merge_sections 6830 #define som_bfd_is_group_section bfd_generic_is_group_section 6831 #define som_bfd_group_name bfd_generic_group_name 6832 #define som_bfd_discard_group bfd_generic_discard_group 6833 #define som_section_already_linked _bfd_generic_section_already_linked 6834 #define som_bfd_define_common_symbol bfd_generic_define_common_symbol 6835 #define som_bfd_link_hide_symbol _bfd_generic_link_hide_symbol 6836 #define som_bfd_define_start_stop bfd_generic_define_start_stop 6837 #define som_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data 6838 #define som_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data 6839 #define som_bfd_set_private_flags _bfd_generic_bfd_set_private_flags 6840 #define som_find_inliner_info _bfd_nosymbols_find_inliner_info 6841 #define som_bfd_link_check_relocs _bfd_generic_link_check_relocs 6842 #define som_set_reloc _bfd_generic_set_reloc 6843 6844 const bfd_target hppa_som_vec = 6845 { 6846 "som", /* Name. */ 6847 bfd_target_som_flavour, 6848 BFD_ENDIAN_BIG, /* Target byte order. */ 6849 BFD_ENDIAN_BIG, /* Target headers byte order. */ 6850 (HAS_RELOC | EXEC_P | /* Object flags. */ 6851 HAS_LINENO | HAS_DEBUG | 6852 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | DYNAMIC), 6853 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | SEC_LINK_ONCE 6854 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ 6855 6856 /* Leading_symbol_char: is the first char of a user symbol 6857 predictable, and if so what is it. */ 6858 0, 6859 '/', /* AR_pad_char. */ 6860 14, /* AR_max_namelen. */ 6861 0, /* match priority. */ 6862 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 6863 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 6864 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ 6865 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 6866 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 6867 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ 6868 {_bfd_dummy_target, 6869 som_object_p, /* bfd_check_format. */ 6870 bfd_generic_archive_p, 6871 _bfd_dummy_target 6872 }, 6873 { 6874 _bfd_bool_bfd_false_error, 6875 som_mkobject, 6876 _bfd_generic_mkarchive, 6877 _bfd_bool_bfd_false_error 6878 }, 6879 { 6880 _bfd_bool_bfd_false_error, 6881 som_write_object_contents, 6882 _bfd_write_archive_contents, 6883 _bfd_bool_bfd_false_error, 6884 }, 6885 #undef som 6886 6887 BFD_JUMP_TABLE_GENERIC (som), 6888 BFD_JUMP_TABLE_COPY (som), 6889 BFD_JUMP_TABLE_CORE (_bfd_nocore), 6890 BFD_JUMP_TABLE_ARCHIVE (som), 6891 BFD_JUMP_TABLE_SYMBOLS (som), 6892 BFD_JUMP_TABLE_RELOCS (som), 6893 BFD_JUMP_TABLE_WRITE (som), 6894 BFD_JUMP_TABLE_LINK (som), 6895 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 6896 6897 NULL, 6898 6899 NULL 6900 }; 6901 6902