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 unsigned long 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 bfd_size_type 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 bfd_size_type 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 bfd_size_type 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 const bfd_target * 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 abfd->xvec; 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 bfd_size_type amt; 2083 2084 /* First, read in space names. */ 2085 amt = file_hdr->space_strings_size; 2086 if (amt == (bfd_size_type) -1) 2087 { 2088 bfd_set_error (bfd_error_no_memory); 2089 goto error_return; 2090 } 2091 space_strings = bfd_malloc (amt + 1); 2092 if (space_strings == NULL && amt != 0) 2093 goto error_return; 2094 2095 if (bfd_seek (abfd, current_offset + file_hdr->space_strings_location, 2096 SEEK_SET) != 0) 2097 goto error_return; 2098 if (bfd_bread (space_strings, amt, abfd) != amt) 2099 goto error_return; 2100 /* Make sure that the string table is NUL terminated. */ 2101 space_strings[amt] = 0; 2102 2103 /* Loop over all of the space dictionaries, building up sections. */ 2104 for (space_index = 0; space_index < file_hdr->space_total; space_index++) 2105 { 2106 struct som_space_dictionary_record space; 2107 struct som_external_space_dictionary_record ext_space; 2108 char *space_name; 2109 struct som_external_subspace_dictionary_record ext_subspace; 2110 struct som_subspace_dictionary_record subspace, save_subspace; 2111 unsigned int subspace_index; 2112 asection *space_asect; 2113 bfd_size_type space_size = 0; 2114 char *newname; 2115 2116 /* Read the space dictionary element. */ 2117 if (bfd_seek (abfd, 2118 (current_offset + file_hdr->space_location 2119 + space_index * sizeof (ext_space)), 2120 SEEK_SET) != 0) 2121 goto error_return; 2122 amt = sizeof ext_space; 2123 if (bfd_bread (&ext_space, amt, abfd) != amt) 2124 goto error_return; 2125 2126 som_swap_space_dictionary_in (&ext_space, &space); 2127 2128 /* Setup the space name string. */ 2129 if (space.name >= file_hdr->space_strings_size) 2130 goto error_return; 2131 2132 space_name = space.name + space_strings; 2133 2134 /* Make a section out of it. */ 2135 amt = strlen (space_name) + 1; 2136 newname = bfd_alloc (abfd, amt); 2137 if (!newname) 2138 goto error_return; 2139 strcpy (newname, space_name); 2140 2141 space_asect = bfd_make_section_anyway (abfd, newname); 2142 if (!space_asect) 2143 goto error_return; 2144 2145 if (space.is_loadable == 0) 2146 space_asect->flags |= SEC_DEBUGGING; 2147 2148 /* Set up all the attributes for the space. */ 2149 if (! bfd_som_set_section_attributes (space_asect, space.is_defined, 2150 space.is_private, space.sort_key, 2151 space.space_number)) 2152 goto error_return; 2153 2154 /* If the space has no subspaces, then we're done. */ 2155 if (space.subspace_quantity == 0) 2156 continue; 2157 2158 /* Now, read in the first subspace for this space. */ 2159 if (bfd_seek (abfd, 2160 (current_offset + file_hdr->subspace_location 2161 + space.subspace_index * sizeof ext_subspace), 2162 SEEK_SET) != 0) 2163 goto error_return; 2164 amt = sizeof ext_subspace; 2165 if (bfd_bread (&ext_subspace, amt, abfd) != amt) 2166 goto error_return; 2167 /* Seek back to the start of the subspaces for loop below. */ 2168 if (bfd_seek (abfd, 2169 (current_offset + file_hdr->subspace_location 2170 + space.subspace_index * sizeof ext_subspace), 2171 SEEK_SET) != 0) 2172 goto error_return; 2173 2174 som_swap_subspace_dictionary_in (&ext_subspace, &subspace); 2175 2176 /* Setup the start address and file loc from the first subspace 2177 record. */ 2178 space_asect->vma = subspace.subspace_start; 2179 space_asect->filepos = subspace.file_loc_init_value + current_offset; 2180 space_asect->alignment_power = exact_log2 (subspace.alignment); 2181 if (space_asect->alignment_power == (unsigned) -1) 2182 goto error_return; 2183 2184 /* Initialize save_subspace so we can reliably determine if this 2185 loop placed any useful values into it. */ 2186 memset (&save_subspace, 0, sizeof (save_subspace)); 2187 2188 /* Loop over the rest of the subspaces, building up more sections. */ 2189 for (subspace_index = 0; subspace_index < space.subspace_quantity; 2190 subspace_index++) 2191 { 2192 asection *subspace_asect; 2193 char *subspace_name; 2194 2195 /* Read in the next subspace. */ 2196 amt = sizeof ext_subspace; 2197 if (bfd_bread (&ext_subspace, amt, abfd) != amt) 2198 goto error_return; 2199 2200 som_swap_subspace_dictionary_in (&ext_subspace, &subspace); 2201 2202 /* Setup the subspace name string. */ 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 subspace_sections = bfd_malloc2 (total_subspaces, sizeof (asection *)); 2348 if (subspace_sections == NULL) 2349 goto error_return; 2350 2351 for (i = 0, section = abfd->sections; section; section = section->next) 2352 { 2353 if (!som_is_subspace (section)) 2354 continue; 2355 2356 subspace_sections[i] = section; 2357 i++; 2358 } 2359 qsort (subspace_sections, total_subspaces, 2360 sizeof (asection *), compare_subspaces); 2361 2362 /* subspace_sections is now sorted in the order in which the subspaces 2363 appear in the object file. Assign an index to each one now. */ 2364 for (i = 0; i < total_subspaces; i++) 2365 subspace_sections[i]->target_index = i; 2366 2367 if (space_strings != NULL) 2368 free (space_strings); 2369 2370 if (subspace_sections != NULL) 2371 free (subspace_sections); 2372 2373 return TRUE; 2374 2375 error_return: 2376 if (space_strings != NULL) 2377 free (space_strings); 2378 2379 if (subspace_sections != NULL) 2380 free (subspace_sections); 2381 return FALSE; 2382 } 2383 2384 2385 /* Read in a SOM object and make it into a BFD. */ 2386 2387 static const bfd_target * 2388 som_object_p (bfd *abfd) 2389 { 2390 struct som_external_header ext_file_hdr; 2391 struct som_header file_hdr; 2392 struct som_exec_auxhdr *aux_hdr_ptr = NULL; 2393 unsigned long current_offset = 0; 2394 struct som_external_lst_header ext_lst_header; 2395 struct som_external_som_entry ext_som_entry; 2396 bfd_size_type amt; 2397 unsigned int loc; 2398 #define ENTRY_SIZE sizeof (struct som_external_som_entry) 2399 2400 amt = sizeof (struct som_external_header); 2401 if (bfd_bread (&ext_file_hdr, amt, abfd) != amt) 2402 { 2403 if (bfd_get_error () != bfd_error_system_call) 2404 bfd_set_error (bfd_error_wrong_format); 2405 return NULL; 2406 } 2407 2408 som_swap_header_in (&ext_file_hdr, &file_hdr); 2409 2410 if (!_PA_RISC_ID (file_hdr.system_id)) 2411 { 2412 bfd_set_error (bfd_error_wrong_format); 2413 return NULL; 2414 } 2415 2416 switch (file_hdr.a_magic) 2417 { 2418 case RELOC_MAGIC: 2419 case EXEC_MAGIC: 2420 case SHARE_MAGIC: 2421 case DEMAND_MAGIC: 2422 case DL_MAGIC: 2423 case SHL_MAGIC: 2424 #ifdef SHARED_MAGIC_CNX 2425 case SHARED_MAGIC_CNX: 2426 #endif 2427 break; 2428 2429 case EXECLIBMAGIC: 2430 /* Read the lst header and determine where the SOM directory begins. */ 2431 2432 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 2433 { 2434 if (bfd_get_error () != bfd_error_system_call) 2435 bfd_set_error (bfd_error_wrong_format); 2436 return NULL; 2437 } 2438 2439 amt = sizeof (struct som_external_lst_header); 2440 if (bfd_bread (&ext_lst_header, amt, abfd) != amt) 2441 { 2442 if (bfd_get_error () != bfd_error_system_call) 2443 bfd_set_error (bfd_error_wrong_format); 2444 return NULL; 2445 } 2446 2447 /* Position to and read the first directory entry. */ 2448 loc = bfd_getb32 (ext_lst_header.dir_loc); 2449 if (bfd_seek (abfd, loc, SEEK_SET) != 0) 2450 { 2451 if (bfd_get_error () != bfd_error_system_call) 2452 bfd_set_error (bfd_error_wrong_format); 2453 return NULL; 2454 } 2455 2456 amt = ENTRY_SIZE; 2457 if (bfd_bread (&ext_som_entry, amt, abfd) != amt) 2458 { 2459 if (bfd_get_error () != bfd_error_system_call) 2460 bfd_set_error (bfd_error_wrong_format); 2461 return NULL; 2462 } 2463 2464 /* Now position to the first SOM. */ 2465 current_offset = bfd_getb32 (ext_som_entry.location); 2466 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0) 2467 { 2468 if (bfd_get_error () != bfd_error_system_call) 2469 bfd_set_error (bfd_error_wrong_format); 2470 return NULL; 2471 } 2472 2473 /* And finally, re-read the som header. */ 2474 amt = sizeof (struct som_external_header); 2475 if (bfd_bread (&ext_file_hdr, amt, abfd) != amt) 2476 { 2477 if (bfd_get_error () != bfd_error_system_call) 2478 bfd_set_error (bfd_error_wrong_format); 2479 return NULL; 2480 } 2481 2482 som_swap_header_in (&ext_file_hdr, &file_hdr); 2483 2484 break; 2485 2486 default: 2487 bfd_set_error (bfd_error_wrong_format); 2488 return NULL; 2489 } 2490 2491 if (file_hdr.version_id != OLD_VERSION_ID 2492 && file_hdr.version_id != NEW_VERSION_ID) 2493 { 2494 bfd_set_error (bfd_error_wrong_format); 2495 return NULL; 2496 } 2497 2498 /* If the aux_header_size field in the file header is zero, then this 2499 object is an incomplete executable (a .o file). Do not try to read 2500 a non-existant auxiliary header. */ 2501 if (file_hdr.aux_header_size != 0) 2502 { 2503 struct som_external_exec_auxhdr ext_exec_auxhdr; 2504 2505 aux_hdr_ptr = bfd_zalloc (abfd, 2506 (bfd_size_type) sizeof (*aux_hdr_ptr)); 2507 if (aux_hdr_ptr == NULL) 2508 return NULL; 2509 amt = sizeof (struct som_external_exec_auxhdr); 2510 if (bfd_bread (&ext_exec_auxhdr, amt, abfd) != amt) 2511 { 2512 if (bfd_get_error () != bfd_error_system_call) 2513 bfd_set_error (bfd_error_wrong_format); 2514 return NULL; 2515 } 2516 som_swap_exec_auxhdr_in (&ext_exec_auxhdr, aux_hdr_ptr); 2517 } 2518 2519 if (!setup_sections (abfd, &file_hdr, current_offset)) 2520 { 2521 /* setup_sections does not bubble up a bfd error code. */ 2522 bfd_set_error (bfd_error_bad_value); 2523 return NULL; 2524 } 2525 2526 /* This appears to be a valid SOM object. Do some initialization. */ 2527 return som_object_setup (abfd, &file_hdr, aux_hdr_ptr, current_offset); 2528 } 2529 2530 /* Create a SOM object. */ 2531 2532 static bfd_boolean 2533 som_mkobject (bfd *abfd) 2534 { 2535 /* Allocate memory to hold backend information. */ 2536 abfd->tdata.som_data = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_data_struct)); 2537 if (abfd->tdata.som_data == NULL) 2538 return FALSE; 2539 return TRUE; 2540 } 2541 2542 /* Initialize some information in the file header. This routine makes 2543 not attempt at doing the right thing for a full executable; it 2544 is only meant to handle relocatable objects. */ 2545 2546 static bfd_boolean 2547 som_prep_headers (bfd *abfd) 2548 { 2549 struct som_header *file_hdr; 2550 asection *section; 2551 bfd_size_type amt = sizeof (struct som_header); 2552 2553 /* Make and attach a file header to the BFD. */ 2554 file_hdr = bfd_zalloc (abfd, amt); 2555 if (file_hdr == NULL) 2556 return FALSE; 2557 obj_som_file_hdr (abfd) = file_hdr; 2558 2559 if (abfd->flags & (EXEC_P | DYNAMIC)) 2560 { 2561 /* Make and attach an exec header to the BFD. */ 2562 amt = sizeof (struct som_exec_auxhdr); 2563 obj_som_exec_hdr (abfd) = bfd_zalloc (abfd, amt); 2564 if (obj_som_exec_hdr (abfd) == NULL) 2565 return FALSE; 2566 2567 if (abfd->flags & D_PAGED) 2568 file_hdr->a_magic = DEMAND_MAGIC; 2569 else if (abfd->flags & WP_TEXT) 2570 file_hdr->a_magic = SHARE_MAGIC; 2571 #ifdef SHL_MAGIC 2572 else if (abfd->flags & DYNAMIC) 2573 file_hdr->a_magic = SHL_MAGIC; 2574 #endif 2575 else 2576 file_hdr->a_magic = EXEC_MAGIC; 2577 } 2578 else 2579 file_hdr->a_magic = RELOC_MAGIC; 2580 2581 /* These fields are optional, and embedding timestamps is not always 2582 a wise thing to do, it makes comparing objects during a multi-stage 2583 bootstrap difficult. */ 2584 file_hdr->file_time.secs = 0; 2585 file_hdr->file_time.nanosecs = 0; 2586 2587 file_hdr->entry_space = 0; 2588 file_hdr->entry_subspace = 0; 2589 file_hdr->entry_offset = 0; 2590 file_hdr->presumed_dp = 0; 2591 2592 /* Now iterate over the sections translating information from 2593 BFD sections to SOM spaces/subspaces. */ 2594 for (section = abfd->sections; section != NULL; section = section->next) 2595 { 2596 /* Ignore anything which has not been marked as a space or 2597 subspace. */ 2598 if (!som_is_space (section) && !som_is_subspace (section)) 2599 continue; 2600 2601 if (som_is_space (section)) 2602 { 2603 /* Allocate space for the space dictionary. */ 2604 amt = sizeof (struct som_space_dictionary_record); 2605 som_section_data (section)->space_dict = bfd_zalloc (abfd, amt); 2606 if (som_section_data (section)->space_dict == NULL) 2607 return FALSE; 2608 /* Set space attributes. Note most attributes of SOM spaces 2609 are set based on the subspaces it contains. */ 2610 som_section_data (section)->space_dict->loader_fix_index = -1; 2611 som_section_data (section)->space_dict->init_pointer_index = -1; 2612 2613 /* Set more attributes that were stuffed away in private data. */ 2614 som_section_data (section)->space_dict->sort_key = 2615 som_section_data (section)->copy_data->sort_key; 2616 som_section_data (section)->space_dict->is_defined = 2617 som_section_data (section)->copy_data->is_defined; 2618 som_section_data (section)->space_dict->is_private = 2619 som_section_data (section)->copy_data->is_private; 2620 som_section_data (section)->space_dict->space_number = 2621 som_section_data (section)->copy_data->space_number; 2622 } 2623 else 2624 { 2625 /* Allocate space for the subspace dictionary. */ 2626 amt = sizeof (struct som_subspace_dictionary_record); 2627 som_section_data (section)->subspace_dict = bfd_zalloc (abfd, amt); 2628 if (som_section_data (section)->subspace_dict == NULL) 2629 return FALSE; 2630 2631 /* Set subspace attributes. Basic stuff is done here, additional 2632 attributes are filled in later as more information becomes 2633 available. */ 2634 if (section->flags & SEC_ALLOC) 2635 som_section_data (section)->subspace_dict->is_loadable = 1; 2636 2637 if (section->flags & SEC_CODE) 2638 som_section_data (section)->subspace_dict->code_only = 1; 2639 2640 som_section_data (section)->subspace_dict->subspace_start = 2641 section->vma; 2642 som_section_data (section)->subspace_dict->subspace_length = 2643 section->size; 2644 som_section_data (section)->subspace_dict->initialization_length = 2645 section->size; 2646 som_section_data (section)->subspace_dict->alignment = 2647 1 << section->alignment_power; 2648 2649 /* Set more attributes that were stuffed away in private data. */ 2650 som_section_data (section)->subspace_dict->sort_key = 2651 som_section_data (section)->copy_data->sort_key; 2652 som_section_data (section)->subspace_dict->access_control_bits = 2653 som_section_data (section)->copy_data->access_control_bits; 2654 som_section_data (section)->subspace_dict->quadrant = 2655 som_section_data (section)->copy_data->quadrant; 2656 som_section_data (section)->subspace_dict->is_comdat = 2657 som_section_data (section)->copy_data->is_comdat; 2658 som_section_data (section)->subspace_dict->is_common = 2659 som_section_data (section)->copy_data->is_common; 2660 som_section_data (section)->subspace_dict->dup_common = 2661 som_section_data (section)->copy_data->dup_common; 2662 } 2663 } 2664 return TRUE; 2665 } 2666 2667 /* Return TRUE if the given section is a SOM space, FALSE otherwise. */ 2668 2669 static bfd_boolean 2670 som_is_space (asection *section) 2671 { 2672 /* If no copy data is available, then it's neither a space nor a 2673 subspace. */ 2674 if (som_section_data (section)->copy_data == NULL) 2675 return FALSE; 2676 2677 /* If the containing space isn't the same as the given section, 2678 then this isn't a space. */ 2679 if (som_section_data (section)->copy_data->container != section 2680 && (som_section_data (section)->copy_data->container->output_section 2681 != section)) 2682 return FALSE; 2683 2684 /* OK. Must be a space. */ 2685 return TRUE; 2686 } 2687 2688 /* Return TRUE if the given section is a SOM subspace, FALSE otherwise. */ 2689 2690 static bfd_boolean 2691 som_is_subspace (asection *section) 2692 { 2693 /* If no copy data is available, then it's neither a space nor a 2694 subspace. */ 2695 if (som_section_data (section)->copy_data == NULL) 2696 return FALSE; 2697 2698 /* If the containing space is the same as the given section, 2699 then this isn't a subspace. */ 2700 if (som_section_data (section)->copy_data->container == section 2701 || (som_section_data (section)->copy_data->container->output_section 2702 == section)) 2703 return FALSE; 2704 2705 /* OK. Must be a subspace. */ 2706 return TRUE; 2707 } 2708 2709 /* Return TRUE if the given space contains the given subspace. It 2710 is safe to assume space really is a space, and subspace really 2711 is a subspace. */ 2712 2713 static bfd_boolean 2714 som_is_container (asection *space, asection *subspace) 2715 { 2716 return (som_section_data (subspace)->copy_data->container == space) 2717 || (som_section_data (subspace)->copy_data->container->output_section 2718 == space); 2719 } 2720 2721 /* Count and return the number of spaces attached to the given BFD. */ 2722 2723 static unsigned long 2724 som_count_spaces (bfd *abfd) 2725 { 2726 int count = 0; 2727 asection *section; 2728 2729 for (section = abfd->sections; section != NULL; section = section->next) 2730 count += som_is_space (section); 2731 2732 return count; 2733 } 2734 2735 /* Count the number of subspaces attached to the given BFD. */ 2736 2737 static unsigned long 2738 som_count_subspaces (bfd *abfd) 2739 { 2740 int count = 0; 2741 asection *section; 2742 2743 for (section = abfd->sections; section != NULL; section = section->next) 2744 count += som_is_subspace (section); 2745 2746 return count; 2747 } 2748 2749 /* Return -1, 0, 1 indicating the relative ordering of sym1 and sym2. 2750 2751 We desire symbols to be ordered starting with the symbol with the 2752 highest relocation count down to the symbol with the lowest relocation 2753 count. Doing so compacts the relocation stream. */ 2754 2755 static int 2756 compare_syms (const void *arg1, const void *arg2) 2757 { 2758 asymbol **sym1 = (asymbol **) arg1; 2759 asymbol **sym2 = (asymbol **) arg2; 2760 unsigned int count1, count2; 2761 2762 /* Get relocation count for each symbol. Note that the count 2763 is stored in the udata pointer for section symbols! */ 2764 if ((*sym1)->flags & BSF_SECTION_SYM) 2765 count1 = (*sym1)->udata.i; 2766 else 2767 count1 = som_symbol_data (*sym1)->reloc_count; 2768 2769 if ((*sym2)->flags & BSF_SECTION_SYM) 2770 count2 = (*sym2)->udata.i; 2771 else 2772 count2 = som_symbol_data (*sym2)->reloc_count; 2773 2774 /* Return the appropriate value. */ 2775 if (count1 < count2) 2776 return 1; 2777 else if (count1 > count2) 2778 return -1; 2779 return 0; 2780 } 2781 2782 /* Return -1, 0, 1 indicating the relative ordering of subspace1 2783 and subspace. */ 2784 2785 static int 2786 compare_subspaces (const void *arg1, const void *arg2) 2787 { 2788 asection **subspace1 = (asection **) arg1; 2789 asection **subspace2 = (asection **) arg2; 2790 2791 if ((*subspace1)->target_index < (*subspace2)->target_index) 2792 return -1; 2793 else if ((*subspace2)->target_index < (*subspace1)->target_index) 2794 return 1; 2795 else 2796 return 0; 2797 } 2798 2799 /* Perform various work in preparation for emitting the fixup stream. */ 2800 2801 static void 2802 som_prep_for_fixups (bfd *abfd, asymbol **syms, unsigned long num_syms) 2803 { 2804 unsigned long i; 2805 asection *section; 2806 asymbol **sorted_syms; 2807 2808 /* Most SOM relocations involving a symbol have a length which is 2809 dependent on the index of the symbol. So symbols which are 2810 used often in relocations should have a small index. */ 2811 2812 /* First initialize the counters for each symbol. */ 2813 for (i = 0; i < num_syms; i++) 2814 { 2815 /* Handle a section symbol; these have no pointers back to the 2816 SOM symbol info. So we just use the udata field to hold the 2817 relocation count. */ 2818 if (som_symbol_data (syms[i]) == NULL 2819 || syms[i]->flags & BSF_SECTION_SYM) 2820 { 2821 syms[i]->flags |= BSF_SECTION_SYM; 2822 syms[i]->udata.i = 0; 2823 } 2824 else 2825 som_symbol_data (syms[i])->reloc_count = 0; 2826 } 2827 2828 /* Now that the counters are initialized, make a weighted count 2829 of how often a given symbol is used in a relocation. */ 2830 for (section = abfd->sections; section != NULL; section = section->next) 2831 { 2832 int j; 2833 2834 /* Does this section have any relocations? */ 2835 if ((int) section->reloc_count <= 0) 2836 continue; 2837 2838 /* Walk through each relocation for this section. */ 2839 for (j = 1; j < (int) section->reloc_count; j++) 2840 { 2841 arelent *reloc = section->orelocation[j]; 2842 int scale; 2843 2844 /* A relocation against a symbol in the *ABS* section really 2845 does not have a symbol. Likewise if the symbol isn't associated 2846 with any section. */ 2847 if (reloc->sym_ptr_ptr == NULL 2848 || bfd_is_abs_section ((*reloc->sym_ptr_ptr)->section)) 2849 continue; 2850 2851 /* Scaling to encourage symbols involved in R_DP_RELATIVE 2852 and R_CODE_ONE_SYMBOL relocations to come first. These 2853 two relocations have single byte versions if the symbol 2854 index is very small. */ 2855 if (reloc->howto->type == R_DP_RELATIVE 2856 || reloc->howto->type == R_CODE_ONE_SYMBOL) 2857 scale = 2; 2858 else 2859 scale = 1; 2860 2861 /* Handle section symbols by storing the count in the udata 2862 field. It will not be used and the count is very important 2863 for these symbols. */ 2864 if ((*reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM) 2865 { 2866 (*reloc->sym_ptr_ptr)->udata.i = 2867 (*reloc->sym_ptr_ptr)->udata.i + scale; 2868 continue; 2869 } 2870 2871 /* A normal symbol. Increment the count. */ 2872 som_symbol_data (*reloc->sym_ptr_ptr)->reloc_count += scale; 2873 } 2874 } 2875 2876 /* Sort a copy of the symbol table, rather than the canonical 2877 output symbol table. */ 2878 sorted_syms = bfd_zalloc2 (abfd, num_syms, sizeof (asymbol *)); 2879 memcpy (sorted_syms, syms, num_syms * sizeof (asymbol *)); 2880 qsort (sorted_syms, num_syms, sizeof (asymbol *), compare_syms); 2881 obj_som_sorted_syms (abfd) = sorted_syms; 2882 2883 /* Compute the symbol indexes, they will be needed by the relocation 2884 code. */ 2885 for (i = 0; i < num_syms; i++) 2886 { 2887 /* A section symbol. Again, there is no pointer to backend symbol 2888 information, so we reuse the udata field again. */ 2889 if (sorted_syms[i]->flags & BSF_SECTION_SYM) 2890 sorted_syms[i]->udata.i = i; 2891 else 2892 som_symbol_data (sorted_syms[i])->index = i; 2893 } 2894 } 2895 2896 static bfd_boolean 2897 som_write_fixups (bfd *abfd, 2898 unsigned long current_offset, 2899 unsigned int *total_reloc_sizep) 2900 { 2901 unsigned int i, j; 2902 /* Chunk of memory that we can use as buffer space, then throw 2903 away. */ 2904 unsigned char tmp_space[SOM_TMP_BUFSIZE]; 2905 unsigned char *p; 2906 unsigned int total_reloc_size = 0; 2907 unsigned int subspace_reloc_size = 0; 2908 unsigned int num_spaces = obj_som_file_hdr (abfd)->space_total; 2909 asection *section = abfd->sections; 2910 bfd_size_type amt; 2911 2912 memset (tmp_space, 0, SOM_TMP_BUFSIZE); 2913 p = tmp_space; 2914 2915 /* All the fixups for a particular subspace are emitted in a single 2916 stream. All the subspaces for a particular space are emitted 2917 as a single stream. 2918 2919 So, to get all the locations correct one must iterate through all the 2920 spaces, for each space iterate through its subspaces and output a 2921 fixups stream. */ 2922 for (i = 0; i < num_spaces; i++) 2923 { 2924 asection *subsection; 2925 2926 /* Find a space. */ 2927 while (!som_is_space (section)) 2928 section = section->next; 2929 2930 /* Now iterate through each of its subspaces. */ 2931 for (subsection = abfd->sections; 2932 subsection != NULL; 2933 subsection = subsection->next) 2934 { 2935 int reloc_offset; 2936 unsigned int current_rounding_mode; 2937 #ifndef NO_PCREL_MODES 2938 unsigned int current_call_mode; 2939 #endif 2940 2941 /* Find a subspace of this space. */ 2942 if (!som_is_subspace (subsection) 2943 || !som_is_container (section, subsection)) 2944 continue; 2945 2946 /* If this subspace does not have real data, then we are 2947 finished with it. */ 2948 if ((subsection->flags & SEC_HAS_CONTENTS) == 0) 2949 { 2950 som_section_data (subsection)->subspace_dict->fixup_request_index 2951 = -1; 2952 continue; 2953 } 2954 2955 /* This subspace has some relocations. Put the relocation stream 2956 index into the subspace record. */ 2957 som_section_data (subsection)->subspace_dict->fixup_request_index 2958 = total_reloc_size; 2959 2960 /* To make life easier start over with a clean slate for 2961 each subspace. Seek to the start of the relocation stream 2962 for this subspace in preparation for writing out its fixup 2963 stream. */ 2964 if (bfd_seek (abfd, current_offset + total_reloc_size, SEEK_SET) != 0) 2965 return FALSE; 2966 2967 /* Buffer space has already been allocated. Just perform some 2968 initialization here. */ 2969 p = tmp_space; 2970 subspace_reloc_size = 0; 2971 reloc_offset = 0; 2972 som_initialize_reloc_queue (reloc_queue); 2973 current_rounding_mode = R_N_MODE; 2974 #ifndef NO_PCREL_MODES 2975 current_call_mode = R_SHORT_PCREL_MODE; 2976 #endif 2977 2978 /* Translate each BFD relocation into one or more SOM 2979 relocations. */ 2980 for (j = 0; j < subsection->reloc_count; j++) 2981 { 2982 arelent *bfd_reloc = subsection->orelocation[j]; 2983 unsigned int skip; 2984 int sym_num; 2985 2986 /* Get the symbol number. Remember it's stored in a 2987 special place for section symbols. */ 2988 if ((*bfd_reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM) 2989 sym_num = (*bfd_reloc->sym_ptr_ptr)->udata.i; 2990 else 2991 sym_num = som_symbol_data (*bfd_reloc->sym_ptr_ptr)->index; 2992 2993 /* If there is not enough room for the next couple relocations, 2994 then dump the current buffer contents now. Also reinitialize 2995 the relocation queue. 2996 2997 No single BFD relocation could ever translate into more 2998 than 100 bytes of SOM relocations (20bytes is probably the 2999 upper limit, but leave lots of space for growth). */ 3000 if (p - tmp_space + 100 > SOM_TMP_BUFSIZE) 3001 { 3002 amt = p - tmp_space; 3003 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt) 3004 return FALSE; 3005 3006 p = tmp_space; 3007 som_initialize_reloc_queue (reloc_queue); 3008 } 3009 3010 /* Emit R_NO_RELOCATION fixups to map any bytes which were 3011 skipped. */ 3012 skip = bfd_reloc->address - reloc_offset; 3013 p = som_reloc_skip (abfd, skip, p, 3014 &subspace_reloc_size, reloc_queue); 3015 3016 /* Update reloc_offset for the next iteration. 3017 3018 Many relocations do not consume input bytes. They 3019 are markers, or set state necessary to perform some 3020 later relocation. */ 3021 switch (bfd_reloc->howto->type) 3022 { 3023 case R_ENTRY: 3024 case R_ALT_ENTRY: 3025 case R_EXIT: 3026 case R_N_MODE: 3027 case R_S_MODE: 3028 case R_D_MODE: 3029 case R_R_MODE: 3030 case R_FSEL: 3031 case R_LSEL: 3032 case R_RSEL: 3033 case R_COMP1: 3034 case R_COMP2: 3035 case R_BEGIN_BRTAB: 3036 case R_END_BRTAB: 3037 case R_BEGIN_TRY: 3038 case R_END_TRY: 3039 case R_N0SEL: 3040 case R_N1SEL: 3041 #ifndef NO_PCREL_MODES 3042 case R_SHORT_PCREL_MODE: 3043 case R_LONG_PCREL_MODE: 3044 #endif 3045 reloc_offset = bfd_reloc->address; 3046 break; 3047 3048 default: 3049 reloc_offset = bfd_reloc->address + 4; 3050 break; 3051 } 3052 3053 /* Now the actual relocation we care about. */ 3054 switch (bfd_reloc->howto->type) 3055 { 3056 case R_PCREL_CALL: 3057 case R_ABS_CALL: 3058 p = som_reloc_call (abfd, p, &subspace_reloc_size, 3059 bfd_reloc, sym_num, reloc_queue); 3060 break; 3061 3062 case R_CODE_ONE_SYMBOL: 3063 case R_DP_RELATIVE: 3064 /* Account for any addend. */ 3065 if (bfd_reloc->addend) 3066 p = som_reloc_addend (abfd, bfd_reloc->addend, p, 3067 &subspace_reloc_size, reloc_queue); 3068 3069 if (sym_num < 0x20) 3070 { 3071 bfd_put_8 (abfd, bfd_reloc->howto->type + sym_num, p); 3072 subspace_reloc_size += 1; 3073 p += 1; 3074 } 3075 else if (sym_num < 0x100) 3076 { 3077 bfd_put_8 (abfd, bfd_reloc->howto->type + 32, p); 3078 bfd_put_8 (abfd, sym_num, p + 1); 3079 p = try_prev_fixup (abfd, &subspace_reloc_size, p, 3080 2, reloc_queue); 3081 } 3082 else if (sym_num < 0x10000000) 3083 { 3084 bfd_put_8 (abfd, bfd_reloc->howto->type + 33, p); 3085 bfd_put_8 (abfd, sym_num >> 16, p + 1); 3086 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); 3087 p = try_prev_fixup (abfd, &subspace_reloc_size, 3088 p, 4, reloc_queue); 3089 } 3090 else 3091 abort (); 3092 break; 3093 3094 case R_DATA_GPREL: 3095 /* Account for any addend. */ 3096 if (bfd_reloc->addend) 3097 p = som_reloc_addend (abfd, bfd_reloc->addend, p, 3098 &subspace_reloc_size, reloc_queue); 3099 3100 if (sym_num < 0x10000000) 3101 { 3102 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3103 bfd_put_8 (abfd, sym_num >> 16, p + 1); 3104 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); 3105 p = try_prev_fixup (abfd, &subspace_reloc_size, 3106 p, 4, reloc_queue); 3107 } 3108 else 3109 abort (); 3110 break; 3111 3112 case R_DATA_ONE_SYMBOL: 3113 case R_DATA_PLABEL: 3114 case R_CODE_PLABEL: 3115 case R_DLT_REL: 3116 /* Account for any addend using R_DATA_OVERRIDE. */ 3117 if (bfd_reloc->howto->type != R_DATA_ONE_SYMBOL 3118 && bfd_reloc->addend) 3119 p = som_reloc_addend (abfd, bfd_reloc->addend, p, 3120 &subspace_reloc_size, reloc_queue); 3121 3122 if (sym_num < 0x100) 3123 { 3124 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3125 bfd_put_8 (abfd, sym_num, p + 1); 3126 p = try_prev_fixup (abfd, &subspace_reloc_size, p, 3127 2, reloc_queue); 3128 } 3129 else if (sym_num < 0x10000000) 3130 { 3131 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p); 3132 bfd_put_8 (abfd, sym_num >> 16, p + 1); 3133 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); 3134 p = try_prev_fixup (abfd, &subspace_reloc_size, 3135 p, 4, reloc_queue); 3136 } 3137 else 3138 abort (); 3139 break; 3140 3141 case R_ENTRY: 3142 { 3143 unsigned int tmp; 3144 arelent *tmp_reloc = NULL; 3145 bfd_put_8 (abfd, R_ENTRY, p); 3146 3147 /* R_ENTRY relocations have 64 bits of associated 3148 data. Unfortunately the addend field of a bfd 3149 relocation is only 32 bits. So, we split up 3150 the 64bit unwind information and store part in 3151 the R_ENTRY relocation, and the rest in the R_EXIT 3152 relocation. */ 3153 bfd_put_32 (abfd, bfd_reloc->addend, p + 1); 3154 3155 /* Find the next R_EXIT relocation. */ 3156 for (tmp = j; tmp < subsection->reloc_count; tmp++) 3157 { 3158 tmp_reloc = subsection->orelocation[tmp]; 3159 if (tmp_reloc->howto->type == R_EXIT) 3160 break; 3161 } 3162 3163 if (tmp == subsection->reloc_count) 3164 abort (); 3165 3166 bfd_put_32 (abfd, tmp_reloc->addend, p + 5); 3167 p = try_prev_fixup (abfd, &subspace_reloc_size, 3168 p, 9, reloc_queue); 3169 break; 3170 } 3171 3172 case R_N_MODE: 3173 case R_S_MODE: 3174 case R_D_MODE: 3175 case R_R_MODE: 3176 /* If this relocation requests the current rounding 3177 mode, then it is redundant. */ 3178 if (bfd_reloc->howto->type != current_rounding_mode) 3179 { 3180 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3181 subspace_reloc_size += 1; 3182 p += 1; 3183 current_rounding_mode = bfd_reloc->howto->type; 3184 } 3185 break; 3186 3187 #ifndef NO_PCREL_MODES 3188 case R_LONG_PCREL_MODE: 3189 case R_SHORT_PCREL_MODE: 3190 if (bfd_reloc->howto->type != current_call_mode) 3191 { 3192 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3193 subspace_reloc_size += 1; 3194 p += 1; 3195 current_call_mode = bfd_reloc->howto->type; 3196 } 3197 break; 3198 #endif 3199 3200 case R_EXIT: 3201 case R_ALT_ENTRY: 3202 case R_FSEL: 3203 case R_LSEL: 3204 case R_RSEL: 3205 case R_BEGIN_BRTAB: 3206 case R_END_BRTAB: 3207 case R_BEGIN_TRY: 3208 case R_N0SEL: 3209 case R_N1SEL: 3210 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3211 subspace_reloc_size += 1; 3212 p += 1; 3213 break; 3214 3215 case R_END_TRY: 3216 /* The end of an exception handling region. The reloc's 3217 addend contains the offset of the exception handling 3218 code. */ 3219 if (bfd_reloc->addend == 0) 3220 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3221 else if (bfd_reloc->addend < 1024) 3222 { 3223 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p); 3224 bfd_put_8 (abfd, bfd_reloc->addend / 4, p + 1); 3225 p = try_prev_fixup (abfd, &subspace_reloc_size, 3226 p, 2, reloc_queue); 3227 } 3228 else 3229 { 3230 bfd_put_8 (abfd, bfd_reloc->howto->type + 2, p); 3231 bfd_put_8 (abfd, (bfd_reloc->addend / 4) >> 16, p + 1); 3232 bfd_put_16 (abfd, bfd_reloc->addend / 4, p + 2); 3233 p = try_prev_fixup (abfd, &subspace_reloc_size, 3234 p, 4, reloc_queue); 3235 } 3236 break; 3237 3238 case R_COMP1: 3239 /* The only time we generate R_COMP1, R_COMP2 and 3240 R_CODE_EXPR relocs is for the difference of two 3241 symbols. Hence we can cheat here. */ 3242 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3243 bfd_put_8 (abfd, 0x44, p + 1); 3244 p = try_prev_fixup (abfd, &subspace_reloc_size, 3245 p, 2, reloc_queue); 3246 break; 3247 3248 case R_COMP2: 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, 0x80, p + 1); 3254 bfd_put_8 (abfd, sym_num >> 16, p + 2); 3255 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3); 3256 p = try_prev_fixup (abfd, &subspace_reloc_size, 3257 p, 5, reloc_queue); 3258 break; 3259 3260 case R_CODE_EXPR: 3261 case R_DATA_EXPR: 3262 /* The only time we generate R_COMP1, R_COMP2 and 3263 R_CODE_EXPR relocs is for the difference of two 3264 symbols. Hence we can cheat here. */ 3265 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3266 subspace_reloc_size += 1; 3267 p += 1; 3268 break; 3269 3270 /* Put a "R_RESERVED" relocation in the stream if 3271 we hit something we do not understand. The linker 3272 will complain loudly if this ever happens. */ 3273 default: 3274 bfd_put_8 (abfd, 0xff, p); 3275 subspace_reloc_size += 1; 3276 p += 1; 3277 break; 3278 } 3279 } 3280 3281 /* Last BFD relocation for a subspace has been processed. 3282 Map the rest of the subspace with R_NO_RELOCATION fixups. */ 3283 p = som_reloc_skip (abfd, subsection->size - reloc_offset, 3284 p, &subspace_reloc_size, reloc_queue); 3285 3286 /* Scribble out the relocations. */ 3287 amt = p - tmp_space; 3288 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt) 3289 return FALSE; 3290 p = tmp_space; 3291 3292 total_reloc_size += subspace_reloc_size; 3293 som_section_data (subsection)->subspace_dict->fixup_request_quantity 3294 = subspace_reloc_size; 3295 } 3296 section = section->next; 3297 } 3298 *total_reloc_sizep = total_reloc_size; 3299 return TRUE; 3300 } 3301 3302 /* Write out the space/subspace string table. */ 3303 3304 static bfd_boolean 3305 som_write_space_strings (bfd *abfd, 3306 unsigned long current_offset, 3307 unsigned int *string_sizep) 3308 { 3309 /* Chunk of memory that we can use as buffer space, then throw 3310 away. */ 3311 size_t tmp_space_size = SOM_TMP_BUFSIZE; 3312 char *tmp_space = bfd_malloc (tmp_space_size); 3313 char *p = tmp_space; 3314 unsigned int strings_size = 0; 3315 asection *section; 3316 bfd_size_type amt; 3317 bfd_size_type res; 3318 3319 if (tmp_space == NULL) 3320 return FALSE; 3321 3322 /* Seek to the start of the space strings in preparation for writing 3323 them out. */ 3324 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) 3325 return FALSE; 3326 3327 /* Walk through all the spaces and subspaces (order is not important) 3328 building up and writing string table entries for their names. */ 3329 for (section = abfd->sections; section != NULL; section = section->next) 3330 { 3331 size_t length; 3332 3333 /* Only work with space/subspaces; avoid any other sections 3334 which might have been made (.text for example). */ 3335 if (!som_is_space (section) && !som_is_subspace (section)) 3336 continue; 3337 3338 /* Get the length of the space/subspace name. */ 3339 length = strlen (section->name); 3340 3341 /* If there is not enough room for the next entry, then dump the 3342 current buffer contents now and maybe allocate a larger 3343 buffer. Each entry will take 4 bytes to hold the string 3344 length + the string itself + null terminator. */ 3345 if (p - tmp_space + 5 + length > tmp_space_size) 3346 { 3347 /* Flush buffer before refilling or reallocating. */ 3348 amt = p - tmp_space; 3349 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) 3350 return FALSE; 3351 3352 /* Reallocate if now empty buffer still too small. */ 3353 if (5 + length > tmp_space_size) 3354 { 3355 /* Ensure a minimum growth factor to avoid O(n**2) space 3356 consumption for n strings. The optimal minimum 3357 factor seems to be 2, as no other value can guarantee 3358 wasting less than 50% space. (Note that we cannot 3359 deallocate space allocated by `alloca' without 3360 returning from this function.) The same technique is 3361 used a few more times below when a buffer is 3362 reallocated. */ 3363 if (2 * tmp_space_size < length + 5) 3364 tmp_space_size = length + 5; 3365 else 3366 tmp_space_size = 2 * tmp_space_size; 3367 tmp_space = xrealloc (tmp_space, tmp_space_size); 3368 } 3369 3370 /* Reset to beginning of the (possibly new) buffer space. */ 3371 p = tmp_space; 3372 } 3373 3374 /* First element in a string table entry is the length of the 3375 string. Alignment issues are already handled. */ 3376 bfd_put_32 (abfd, (bfd_vma) length, p); 3377 p += 4; 3378 strings_size += 4; 3379 3380 /* Record the index in the space/subspace records. */ 3381 if (som_is_space (section)) 3382 som_section_data (section)->space_dict->name = strings_size; 3383 else 3384 som_section_data (section)->subspace_dict->name = strings_size; 3385 3386 /* Next comes the string itself + a null terminator. */ 3387 strcpy (p, section->name); 3388 p += length + 1; 3389 strings_size += length + 1; 3390 3391 /* Always align up to the next word boundary. */ 3392 while (strings_size % 4) 3393 { 3394 bfd_put_8 (abfd, 0, p); 3395 p++; 3396 strings_size++; 3397 } 3398 } 3399 3400 /* Done with the space/subspace strings. Write out any information 3401 contained in a partial block. */ 3402 amt = p - tmp_space; 3403 res = bfd_bwrite ((void *) &tmp_space[0], amt, abfd); 3404 free (tmp_space); 3405 if (res != amt) 3406 return FALSE; 3407 *string_sizep = strings_size; 3408 return TRUE; 3409 } 3410 3411 /* Write out the symbol string table. */ 3412 3413 static bfd_boolean 3414 som_write_symbol_strings (bfd *abfd, 3415 unsigned long current_offset, 3416 asymbol **syms, 3417 unsigned int num_syms, 3418 unsigned int *string_sizep, 3419 struct som_compilation_unit *compilation_unit) 3420 { 3421 unsigned int i; 3422 /* Chunk of memory that we can use as buffer space, then throw 3423 away. */ 3424 size_t tmp_space_size = SOM_TMP_BUFSIZE; 3425 char *tmp_space = bfd_malloc (tmp_space_size); 3426 char *p = tmp_space; 3427 unsigned int strings_size = 0; 3428 bfd_size_type amt; 3429 bfd_size_type res; 3430 3431 if (tmp_space == NULL) 3432 return FALSE; 3433 3434 /* This gets a bit gruesome because of the compilation unit. The 3435 strings within the compilation unit are part of the symbol 3436 strings, but don't have symbol_dictionary entries. So, manually 3437 write them and update the compilation unit header. On input, the 3438 compilation unit header contains local copies of the strings. 3439 Move them aside. */ 3440 3441 /* Seek to the start of the space strings in preparation for writing 3442 them out. */ 3443 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) 3444 return FALSE; 3445 3446 if (compilation_unit) 3447 { 3448 for (i = 0; i < 4; i++) 3449 { 3450 struct som_name_pt *name; 3451 size_t length; 3452 3453 switch (i) 3454 { 3455 case 0: 3456 name = &compilation_unit->name; 3457 break; 3458 case 1: 3459 name = &compilation_unit->language_name; 3460 break; 3461 case 2: 3462 name = &compilation_unit->product_id; 3463 break; 3464 case 3: 3465 name = &compilation_unit->version_id; 3466 break; 3467 default: 3468 abort (); 3469 } 3470 3471 length = strlen (name->name); 3472 3473 /* If there is not enough room for the next entry, then dump 3474 the current buffer contents now and maybe allocate a 3475 larger buffer. */ 3476 if (p - tmp_space + 5 + length > tmp_space_size) 3477 { 3478 /* Flush buffer before refilling or reallocating. */ 3479 amt = p - tmp_space; 3480 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) 3481 return FALSE; 3482 3483 /* Reallocate if now empty buffer still too small. */ 3484 if (5 + length > tmp_space_size) 3485 { 3486 /* See alloca above for discussion of new size. */ 3487 if (2 * tmp_space_size < 5 + length) 3488 tmp_space_size = 5 + length; 3489 else 3490 tmp_space_size = 2 * tmp_space_size; 3491 tmp_space = xrealloc (tmp_space, tmp_space_size); 3492 } 3493 3494 /* Reset to beginning of the (possibly new) buffer 3495 space. */ 3496 p = tmp_space; 3497 } 3498 3499 /* First element in a string table entry is the length of 3500 the string. This must always be 4 byte aligned. This is 3501 also an appropriate time to fill in the string index 3502 field in the symbol table entry. */ 3503 bfd_put_32 (abfd, (bfd_vma) length, p); 3504 strings_size += 4; 3505 p += 4; 3506 3507 /* Next comes the string itself + a null terminator. */ 3508 strcpy (p, name->name); 3509 3510 name->strx = strings_size; 3511 3512 p += length + 1; 3513 strings_size += length + 1; 3514 3515 /* Always align up to the next word boundary. */ 3516 while (strings_size % 4) 3517 { 3518 bfd_put_8 (abfd, 0, p); 3519 strings_size++; 3520 p++; 3521 } 3522 } 3523 } 3524 3525 for (i = 0; i < num_syms; i++) 3526 { 3527 size_t length = strlen (syms[i]->name); 3528 3529 /* If there is not enough room for the next entry, then dump the 3530 current buffer contents now and maybe allocate a larger buffer. */ 3531 if (p - tmp_space + 5 + length > tmp_space_size) 3532 { 3533 /* Flush buffer before refilling or reallocating. */ 3534 amt = p - tmp_space; 3535 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) 3536 return FALSE; 3537 3538 /* Reallocate if now empty buffer still too small. */ 3539 if (5 + length > tmp_space_size) 3540 { 3541 /* See alloca above for discussion of new size. */ 3542 if (2 * tmp_space_size < 5 + length) 3543 tmp_space_size = 5 + length; 3544 else 3545 tmp_space_size = 2 * tmp_space_size; 3546 tmp_space = xrealloc (tmp_space, tmp_space_size); 3547 } 3548 3549 /* Reset to beginning of the (possibly new) buffer space. */ 3550 p = tmp_space; 3551 } 3552 3553 /* First element in a string table entry is the length of the 3554 string. This must always be 4 byte aligned. This is also 3555 an appropriate time to fill in the string index field in the 3556 symbol table entry. */ 3557 bfd_put_32 (abfd, (bfd_vma) length, p); 3558 strings_size += 4; 3559 p += 4; 3560 3561 /* Next comes the string itself + a null terminator. */ 3562 strcpy (p, syms[i]->name); 3563 3564 som_symbol_data (syms[i])->stringtab_offset = strings_size; 3565 p += length + 1; 3566 strings_size += length + 1; 3567 3568 /* Always align up to the next word boundary. */ 3569 while (strings_size % 4) 3570 { 3571 bfd_put_8 (abfd, 0, p); 3572 strings_size++; 3573 p++; 3574 } 3575 } 3576 3577 /* Scribble out any partial block. */ 3578 amt = p - tmp_space; 3579 res = bfd_bwrite ((void *) &tmp_space[0], amt, abfd); 3580 free (tmp_space); 3581 if (res != amt) 3582 return FALSE; 3583 3584 *string_sizep = strings_size; 3585 return TRUE; 3586 } 3587 3588 /* Compute variable information to be placed in the SOM headers, 3589 space/subspace dictionaries, relocation streams, etc. Begin 3590 writing parts of the object file. */ 3591 3592 static bfd_boolean 3593 som_begin_writing (bfd *abfd) 3594 { 3595 unsigned long current_offset = 0; 3596 unsigned int strings_size = 0; 3597 unsigned long num_spaces, num_subspaces, i; 3598 asection *section; 3599 unsigned int total_subspaces = 0; 3600 struct som_exec_auxhdr *exec_header = NULL; 3601 3602 /* The file header will always be first in an object file, 3603 everything else can be in random locations. To keep things 3604 "simple" BFD will lay out the object file in the manner suggested 3605 by the PRO ABI for PA-RISC Systems. */ 3606 3607 /* Before any output can really begin offsets for all the major 3608 portions of the object file must be computed. So, starting 3609 with the initial file header compute (and sometimes write) 3610 each portion of the object file. */ 3611 3612 /* Make room for the file header, it's contents are not complete 3613 yet, so it can not be written at this time. */ 3614 current_offset += sizeof (struct som_external_header); 3615 3616 /* Any auxiliary headers will follow the file header. Right now 3617 we support only the copyright and version headers. */ 3618 obj_som_file_hdr (abfd)->aux_header_location = current_offset; 3619 obj_som_file_hdr (abfd)->aux_header_size = 0; 3620 if (abfd->flags & (EXEC_P | DYNAMIC)) 3621 { 3622 /* Parts of the exec header will be filled in later, so 3623 delay writing the header itself. Fill in the defaults, 3624 and write it later. */ 3625 current_offset += sizeof (struct som_external_exec_auxhdr); 3626 obj_som_file_hdr (abfd)->aux_header_size 3627 += sizeof (struct som_external_exec_auxhdr); 3628 exec_header = obj_som_exec_hdr (abfd); 3629 exec_header->som_auxhdr.type = EXEC_AUX_ID; 3630 exec_header->som_auxhdr.length = 40; 3631 } 3632 if (obj_som_version_hdr (abfd) != NULL) 3633 { 3634 struct som_external_string_auxhdr ext_string_auxhdr; 3635 bfd_size_type len; 3636 3637 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) 3638 return FALSE; 3639 3640 /* Write the aux_id structure and the string length. */ 3641 len = sizeof (struct som_external_string_auxhdr); 3642 obj_som_file_hdr (abfd)->aux_header_size += len; 3643 current_offset += len; 3644 som_swap_string_auxhdr_out 3645 (obj_som_version_hdr (abfd), &ext_string_auxhdr); 3646 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len) 3647 return FALSE; 3648 3649 /* Write the version string. */ 3650 len = obj_som_version_hdr (abfd)->header_id.length - 4; 3651 obj_som_file_hdr (abfd)->aux_header_size += len; 3652 current_offset += len; 3653 if (bfd_bwrite ((void *) obj_som_version_hdr (abfd)->string, len, abfd) 3654 != len) 3655 return FALSE; 3656 } 3657 3658 if (obj_som_copyright_hdr (abfd) != NULL) 3659 { 3660 struct som_external_string_auxhdr ext_string_auxhdr; 3661 bfd_size_type len; 3662 3663 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) 3664 return FALSE; 3665 3666 /* Write the aux_id structure and the string length. */ 3667 len = sizeof (struct som_external_string_auxhdr); 3668 obj_som_file_hdr (abfd)->aux_header_size += len; 3669 current_offset += len; 3670 som_swap_string_auxhdr_out 3671 (obj_som_copyright_hdr (abfd), &ext_string_auxhdr); 3672 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len) 3673 return FALSE; 3674 3675 /* Write the copyright string. */ 3676 len = obj_som_copyright_hdr (abfd)->header_id.length - 4; 3677 obj_som_file_hdr (abfd)->aux_header_size += len; 3678 current_offset += len; 3679 if (bfd_bwrite ((void *) obj_som_copyright_hdr (abfd)->string, len, abfd) 3680 != len) 3681 return FALSE; 3682 } 3683 3684 /* Next comes the initialization pointers; we have no initialization 3685 pointers, so current offset does not change. */ 3686 obj_som_file_hdr (abfd)->init_array_location = current_offset; 3687 obj_som_file_hdr (abfd)->init_array_total = 0; 3688 3689 /* Next are the space records. These are fixed length records. 3690 3691 Count the number of spaces to determine how much room is needed 3692 in the object file for the space records. 3693 3694 The names of the spaces are stored in a separate string table, 3695 and the index for each space into the string table is computed 3696 below. Therefore, it is not possible to write the space headers 3697 at this time. */ 3698 num_spaces = som_count_spaces (abfd); 3699 obj_som_file_hdr (abfd)->space_location = current_offset; 3700 obj_som_file_hdr (abfd)->space_total = num_spaces; 3701 current_offset += 3702 num_spaces * sizeof (struct som_external_space_dictionary_record); 3703 3704 /* Next are the subspace records. These are fixed length records. 3705 3706 Count the number of subspaes to determine how much room is needed 3707 in the object file for the subspace records. 3708 3709 A variety if fields in the subspace record are still unknown at 3710 this time (index into string table, fixup stream location/size, etc). */ 3711 num_subspaces = som_count_subspaces (abfd); 3712 obj_som_file_hdr (abfd)->subspace_location = current_offset; 3713 obj_som_file_hdr (abfd)->subspace_total = num_subspaces; 3714 current_offset 3715 += num_subspaces * sizeof (struct som_external_subspace_dictionary_record); 3716 3717 /* Next is the string table for the space/subspace names. We will 3718 build and write the string table on the fly. At the same time 3719 we will fill in the space/subspace name index fields. */ 3720 3721 /* The string table needs to be aligned on a word boundary. */ 3722 if (current_offset % 4) 3723 current_offset += (4 - (current_offset % 4)); 3724 3725 /* Mark the offset of the space/subspace string table in the 3726 file header. */ 3727 obj_som_file_hdr (abfd)->space_strings_location = current_offset; 3728 3729 /* Scribble out the space strings. */ 3730 if (! som_write_space_strings (abfd, current_offset, &strings_size)) 3731 return FALSE; 3732 3733 /* Record total string table size in the header and update the 3734 current offset. */ 3735 obj_som_file_hdr (abfd)->space_strings_size = strings_size; 3736 current_offset += strings_size; 3737 3738 /* Next is the compilation unit. */ 3739 obj_som_file_hdr (abfd)->compiler_location = current_offset; 3740 obj_som_file_hdr (abfd)->compiler_total = 0; 3741 if (obj_som_compilation_unit (abfd)) 3742 { 3743 obj_som_file_hdr (abfd)->compiler_total = 1; 3744 current_offset += sizeof (struct som_external_compilation_unit); 3745 } 3746 3747 /* Now compute the file positions for the loadable subspaces, taking 3748 care to make sure everything stays properly aligned. */ 3749 3750 section = abfd->sections; 3751 for (i = 0; i < num_spaces; i++) 3752 { 3753 asection *subsection; 3754 int first_subspace; 3755 unsigned int subspace_offset = 0; 3756 3757 /* Find a space. */ 3758 while (!som_is_space (section)) 3759 section = section->next; 3760 3761 first_subspace = 1; 3762 /* Now look for all its subspaces. */ 3763 for (subsection = abfd->sections; 3764 subsection != NULL; 3765 subsection = subsection->next) 3766 { 3767 3768 if (!som_is_subspace (subsection) 3769 || !som_is_container (section, subsection) 3770 || (subsection->flags & SEC_ALLOC) == 0) 3771 continue; 3772 3773 /* If this is the first subspace in the space, and we are 3774 building an executable, then take care to make sure all 3775 the alignments are correct and update the exec header. */ 3776 if (first_subspace 3777 && (abfd->flags & (EXEC_P | DYNAMIC))) 3778 { 3779 /* Demand paged executables have each space aligned to a 3780 page boundary. Sharable executables (write-protected 3781 text) have just the private (aka data & bss) space aligned 3782 to a page boundary. Ugh. Not true for HPUX. 3783 3784 The HPUX kernel requires the text to always be page aligned 3785 within the file regardless of the executable's type. */ 3786 if (abfd->flags & (D_PAGED | DYNAMIC) 3787 || (subsection->flags & SEC_CODE) 3788 || ((abfd->flags & WP_TEXT) 3789 && (subsection->flags & SEC_DATA))) 3790 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3791 3792 /* Update the exec header. */ 3793 if (subsection->flags & SEC_CODE && exec_header->exec_tfile == 0) 3794 { 3795 exec_header->exec_tmem = section->vma; 3796 exec_header->exec_tfile = current_offset; 3797 } 3798 if (subsection->flags & SEC_DATA && exec_header->exec_dfile == 0) 3799 { 3800 exec_header->exec_dmem = section->vma; 3801 exec_header->exec_dfile = current_offset; 3802 } 3803 3804 /* Keep track of exactly where we are within a particular 3805 space. This is necessary as the braindamaged HPUX 3806 loader will create holes between subspaces *and* 3807 subspace alignments are *NOT* preserved. What a crock. */ 3808 subspace_offset = subsection->vma; 3809 3810 /* Only do this for the first subspace within each space. */ 3811 first_subspace = 0; 3812 } 3813 else if (abfd->flags & (EXEC_P | DYNAMIC)) 3814 { 3815 /* The braindamaged HPUX loader may have created a hole 3816 between two subspaces. It is *not* sufficient to use 3817 the alignment specifications within the subspaces to 3818 account for these holes -- I've run into at least one 3819 case where the loader left one code subspace unaligned 3820 in a final executable. 3821 3822 To combat this we keep a current offset within each space, 3823 and use the subspace vma fields to detect and preserve 3824 holes. What a crock! 3825 3826 ps. This is not necessary for unloadable space/subspaces. */ 3827 current_offset += subsection->vma - subspace_offset; 3828 if (subsection->flags & SEC_CODE) 3829 exec_header->exec_tsize += subsection->vma - subspace_offset; 3830 else 3831 exec_header->exec_dsize += subsection->vma - subspace_offset; 3832 subspace_offset += subsection->vma - subspace_offset; 3833 } 3834 3835 subsection->target_index = total_subspaces++; 3836 /* This is real data to be loaded from the file. */ 3837 if (subsection->flags & SEC_LOAD) 3838 { 3839 /* Update the size of the code & data. */ 3840 if (abfd->flags & (EXEC_P | DYNAMIC) 3841 && subsection->flags & SEC_CODE) 3842 exec_header->exec_tsize += subsection->size; 3843 else if (abfd->flags & (EXEC_P | DYNAMIC) 3844 && subsection->flags & SEC_DATA) 3845 exec_header->exec_dsize += subsection->size; 3846 som_section_data (subsection)->subspace_dict->file_loc_init_value 3847 = current_offset; 3848 subsection->filepos = current_offset; 3849 current_offset += subsection->size; 3850 subspace_offset += subsection->size; 3851 } 3852 /* Looks like uninitialized data. */ 3853 else 3854 { 3855 /* Update the size of the bss section. */ 3856 if (abfd->flags & (EXEC_P | DYNAMIC)) 3857 exec_header->exec_bsize += subsection->size; 3858 3859 som_section_data (subsection)->subspace_dict->file_loc_init_value 3860 = 0; 3861 som_section_data (subsection)->subspace_dict-> 3862 initialization_length = 0; 3863 } 3864 } 3865 /* Goto the next section. */ 3866 section = section->next; 3867 } 3868 3869 /* Finally compute the file positions for unloadable subspaces. 3870 If building an executable, start the unloadable stuff on its 3871 own page. */ 3872 3873 if (abfd->flags & (EXEC_P | DYNAMIC)) 3874 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3875 3876 obj_som_file_hdr (abfd)->unloadable_sp_location = current_offset; 3877 section = abfd->sections; 3878 for (i = 0; i < num_spaces; i++) 3879 { 3880 asection *subsection; 3881 3882 /* Find a space. */ 3883 while (!som_is_space (section)) 3884 section = section->next; 3885 3886 if (abfd->flags & (EXEC_P | DYNAMIC)) 3887 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3888 3889 /* Now look for all its subspaces. */ 3890 for (subsection = abfd->sections; 3891 subsection != NULL; 3892 subsection = subsection->next) 3893 { 3894 3895 if (!som_is_subspace (subsection) 3896 || !som_is_container (section, subsection) 3897 || (subsection->flags & SEC_ALLOC) != 0) 3898 continue; 3899 3900 subsection->target_index = total_subspaces++; 3901 /* This is real data to be loaded from the file. */ 3902 if ((subsection->flags & SEC_LOAD) == 0) 3903 { 3904 som_section_data (subsection)->subspace_dict->file_loc_init_value 3905 = current_offset; 3906 subsection->filepos = current_offset; 3907 current_offset += subsection->size; 3908 } 3909 /* Looks like uninitialized data. */ 3910 else 3911 { 3912 som_section_data (subsection)->subspace_dict->file_loc_init_value 3913 = 0; 3914 som_section_data (subsection)->subspace_dict-> 3915 initialization_length = subsection->size; 3916 } 3917 } 3918 /* Goto the next section. */ 3919 section = section->next; 3920 } 3921 3922 /* If building an executable, then make sure to seek to and write 3923 one byte at the end of the file to make sure any necessary 3924 zeros are filled in. Ugh. */ 3925 if (abfd->flags & (EXEC_P | DYNAMIC)) 3926 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3927 if (bfd_seek (abfd, (file_ptr) current_offset - 1, SEEK_SET) != 0) 3928 return FALSE; 3929 if (bfd_bwrite ((void *) "", (bfd_size_type) 1, abfd) != 1) 3930 return FALSE; 3931 3932 obj_som_file_hdr (abfd)->unloadable_sp_size 3933 = current_offset - obj_som_file_hdr (abfd)->unloadable_sp_location; 3934 3935 /* Loader fixups are not supported in any way shape or form. */ 3936 obj_som_file_hdr (abfd)->loader_fixup_location = 0; 3937 obj_som_file_hdr (abfd)->loader_fixup_total = 0; 3938 3939 /* Done. Store the total size of the SOM so far. */ 3940 obj_som_file_hdr (abfd)->som_length = current_offset; 3941 3942 return TRUE; 3943 } 3944 3945 /* Finally, scribble out the various headers to the disk. */ 3946 3947 static bfd_boolean 3948 som_finish_writing (bfd *abfd) 3949 { 3950 int num_spaces = som_count_spaces (abfd); 3951 asymbol **syms = bfd_get_outsymbols (abfd); 3952 int i, num_syms; 3953 int subspace_index = 0; 3954 file_ptr location; 3955 asection *section; 3956 unsigned long current_offset; 3957 unsigned int strings_size, total_reloc_size; 3958 bfd_size_type amt; 3959 struct som_external_header ext_header; 3960 3961 /* We must set up the version identifier here as objcopy/strip copy 3962 private BFD data too late for us to handle this in som_begin_writing. */ 3963 if (obj_som_exec_data (abfd) 3964 && obj_som_exec_data (abfd)->version_id) 3965 obj_som_file_hdr (abfd)->version_id = obj_som_exec_data (abfd)->version_id; 3966 else 3967 obj_som_file_hdr (abfd)->version_id = NEW_VERSION_ID; 3968 3969 /* Next is the symbol table. These are fixed length records. 3970 3971 Count the number of symbols to determine how much room is needed 3972 in the object file for the symbol table. 3973 3974 The names of the symbols are stored in a separate string table, 3975 and the index for each symbol name into the string table is computed 3976 below. Therefore, it is not possible to write the symbol table 3977 at this time. 3978 3979 These used to be output before the subspace contents, but they 3980 were moved here to work around a stupid bug in the hpux linker 3981 (fixed in hpux10). */ 3982 current_offset = obj_som_file_hdr (abfd)->som_length; 3983 3984 /* Make sure we're on a word boundary. */ 3985 if (current_offset % 4) 3986 current_offset += (4 - (current_offset % 4)); 3987 3988 num_syms = bfd_get_symcount (abfd); 3989 obj_som_file_hdr (abfd)->symbol_location = current_offset; 3990 obj_som_file_hdr (abfd)->symbol_total = num_syms; 3991 current_offset += 3992 num_syms * sizeof (struct som_external_symbol_dictionary_record); 3993 3994 /* Next are the symbol strings. 3995 Align them to a word boundary. */ 3996 if (current_offset % 4) 3997 current_offset += (4 - (current_offset % 4)); 3998 obj_som_file_hdr (abfd)->symbol_strings_location = current_offset; 3999 4000 /* Scribble out the symbol strings. */ 4001 if (! som_write_symbol_strings (abfd, current_offset, syms, 4002 num_syms, &strings_size, 4003 obj_som_compilation_unit (abfd))) 4004 return FALSE; 4005 4006 /* Record total string table size in header and update the 4007 current offset. */ 4008 obj_som_file_hdr (abfd)->symbol_strings_size = strings_size; 4009 current_offset += strings_size; 4010 4011 /* Do prep work before handling fixups. */ 4012 som_prep_for_fixups (abfd, 4013 bfd_get_outsymbols (abfd), 4014 bfd_get_symcount (abfd)); 4015 4016 /* At the end of the file is the fixup stream which starts on a 4017 word boundary. */ 4018 if (current_offset % 4) 4019 current_offset += (4 - (current_offset % 4)); 4020 obj_som_file_hdr (abfd)->fixup_request_location = current_offset; 4021 4022 /* Write the fixups and update fields in subspace headers which 4023 relate to the fixup stream. */ 4024 if (! som_write_fixups (abfd, current_offset, &total_reloc_size)) 4025 return FALSE; 4026 4027 /* Record the total size of the fixup stream in the file header. */ 4028 obj_som_file_hdr (abfd)->fixup_request_total = total_reloc_size; 4029 4030 /* Done. Store the total size of the SOM. */ 4031 obj_som_file_hdr (abfd)->som_length = current_offset + total_reloc_size; 4032 4033 /* Now that the symbol table information is complete, build and 4034 write the symbol table. */ 4035 if (! som_build_and_write_symbol_table (abfd)) 4036 return FALSE; 4037 4038 /* Subspaces are written first so that we can set up information 4039 about them in their containing spaces as the subspace is written. */ 4040 4041 /* Seek to the start of the subspace dictionary records. */ 4042 location = obj_som_file_hdr (abfd)->subspace_location; 4043 if (bfd_seek (abfd, location, SEEK_SET) != 0) 4044 return FALSE; 4045 4046 section = abfd->sections; 4047 /* Now for each loadable space write out records for its subspaces. */ 4048 for (i = 0; i < num_spaces; i++) 4049 { 4050 asection *subsection; 4051 4052 /* Find a space. */ 4053 while (!som_is_space (section)) 4054 section = section->next; 4055 4056 /* Now look for all its subspaces. */ 4057 for (subsection = abfd->sections; 4058 subsection != NULL; 4059 subsection = subsection->next) 4060 { 4061 struct som_external_subspace_dictionary_record ext_subspace_dict; 4062 4063 /* Skip any section which does not correspond to a space 4064 or subspace. Or does not have SEC_ALLOC set (and therefore 4065 has no real bits on the disk). */ 4066 if (!som_is_subspace (subsection) 4067 || !som_is_container (section, subsection) 4068 || (subsection->flags & SEC_ALLOC) == 0) 4069 continue; 4070 4071 /* If this is the first subspace for this space, then save 4072 the index of the subspace in its containing space. Also 4073 set "is_loadable" in the containing space. */ 4074 4075 if (som_section_data (section)->space_dict->subspace_quantity == 0) 4076 { 4077 som_section_data (section)->space_dict->is_loadable = 1; 4078 som_section_data (section)->space_dict->subspace_index 4079 = subspace_index; 4080 } 4081 4082 /* Increment the number of subspaces seen and the number of 4083 subspaces contained within the current space. */ 4084 subspace_index++; 4085 som_section_data (section)->space_dict->subspace_quantity++; 4086 4087 /* Mark the index of the current space within the subspace's 4088 dictionary record. */ 4089 som_section_data (subsection)->subspace_dict->space_index = i; 4090 4091 /* Dump the current subspace header. */ 4092 som_swap_subspace_dictionary_record_out 4093 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict); 4094 amt = sizeof (struct som_subspace_dictionary_record); 4095 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt) 4096 return FALSE; 4097 } 4098 /* Goto the next section. */ 4099 section = section->next; 4100 } 4101 4102 /* Now repeat the process for unloadable subspaces. */ 4103 section = abfd->sections; 4104 /* Now for each space write out records for its subspaces. */ 4105 for (i = 0; i < num_spaces; i++) 4106 { 4107 asection *subsection; 4108 4109 /* Find a space. */ 4110 while (!som_is_space (section)) 4111 section = section->next; 4112 4113 /* Now look for all its subspaces. */ 4114 for (subsection = abfd->sections; 4115 subsection != NULL; 4116 subsection = subsection->next) 4117 { 4118 struct som_external_subspace_dictionary_record ext_subspace_dict; 4119 4120 /* Skip any section which does not correspond to a space or 4121 subspace, or which SEC_ALLOC set (and therefore handled 4122 in the loadable spaces/subspaces code above). */ 4123 4124 if (!som_is_subspace (subsection) 4125 || !som_is_container (section, subsection) 4126 || (subsection->flags & SEC_ALLOC) != 0) 4127 continue; 4128 4129 /* If this is the first subspace for this space, then save 4130 the index of the subspace in its containing space. Clear 4131 "is_loadable". */ 4132 4133 if (som_section_data (section)->space_dict->subspace_quantity == 0) 4134 { 4135 som_section_data (section)->space_dict->is_loadable = 0; 4136 som_section_data (section)->space_dict->subspace_index 4137 = subspace_index; 4138 } 4139 4140 /* Increment the number of subspaces seen and the number of 4141 subspaces contained within the current space. */ 4142 som_section_data (section)->space_dict->subspace_quantity++; 4143 subspace_index++; 4144 4145 /* Mark the index of the current space within the subspace's 4146 dictionary record. */ 4147 som_section_data (subsection)->subspace_dict->space_index = i; 4148 4149 /* Dump this subspace header. */ 4150 som_swap_subspace_dictionary_record_out 4151 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict); 4152 amt = sizeof (struct som_subspace_dictionary_record); 4153 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt) 4154 return FALSE; 4155 } 4156 /* Goto the next section. */ 4157 section = section->next; 4158 } 4159 4160 /* All the subspace dictionary records are written, and all the 4161 fields are set up in the space dictionary records. 4162 4163 Seek to the right location and start writing the space 4164 dictionary records. */ 4165 location = obj_som_file_hdr (abfd)->space_location; 4166 if (bfd_seek (abfd, location, SEEK_SET) != 0) 4167 return FALSE; 4168 4169 section = abfd->sections; 4170 for (i = 0; i < num_spaces; i++) 4171 { 4172 struct som_external_space_dictionary_record ext_space_dict; 4173 4174 /* Find a space. */ 4175 while (!som_is_space (section)) 4176 section = section->next; 4177 4178 /* Dump its header. */ 4179 som_swap_space_dictionary_out (som_section_data (section)->space_dict, 4180 &ext_space_dict); 4181 amt = sizeof (struct som_external_space_dictionary_record); 4182 if (bfd_bwrite (&ext_space_dict, amt, abfd) != amt) 4183 return FALSE; 4184 4185 /* Goto the next section. */ 4186 section = section->next; 4187 } 4188 4189 /* Write the compilation unit record if there is one. */ 4190 if (obj_som_compilation_unit (abfd)) 4191 { 4192 struct som_external_compilation_unit ext_comp_unit; 4193 4194 location = obj_som_file_hdr (abfd)->compiler_location; 4195 if (bfd_seek (abfd, location, SEEK_SET) != 0) 4196 return FALSE; 4197 4198 som_swap_compilation_unit_out 4199 (obj_som_compilation_unit (abfd), &ext_comp_unit); 4200 4201 amt = sizeof (struct som_external_compilation_unit); 4202 if (bfd_bwrite (&ext_comp_unit, amt, abfd) != amt) 4203 return FALSE; 4204 } 4205 4206 /* Setting of the system_id has to happen very late now that copying of 4207 BFD private data happens *after* section contents are set. */ 4208 if (abfd->flags & (EXEC_P | DYNAMIC)) 4209 obj_som_file_hdr (abfd)->system_id = obj_som_exec_data (abfd)->system_id; 4210 else if (bfd_get_mach (abfd) == pa20) 4211 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC2_0; 4212 else if (bfd_get_mach (abfd) == pa11) 4213 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_1; 4214 else 4215 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_0; 4216 4217 /* Swap and compute the checksum for the file header just before writing 4218 the header to disk. */ 4219 som_swap_header_out (obj_som_file_hdr (abfd), &ext_header); 4220 bfd_putb32 (som_compute_checksum (&ext_header), ext_header.checksum); 4221 4222 /* Only thing left to do is write out the file header. It is always 4223 at location zero. Seek there and write it. */ 4224 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 4225 return FALSE; 4226 amt = sizeof (struct som_external_header); 4227 if (bfd_bwrite (&ext_header, amt, abfd) != amt) 4228 return FALSE; 4229 4230 /* Now write the exec header. */ 4231 if (abfd->flags & (EXEC_P | DYNAMIC)) 4232 { 4233 long tmp, som_length; 4234 struct som_exec_auxhdr *exec_header; 4235 struct som_external_exec_auxhdr ext_exec_header; 4236 4237 exec_header = obj_som_exec_hdr (abfd); 4238 exec_header->exec_entry = bfd_get_start_address (abfd); 4239 exec_header->exec_flags = obj_som_exec_data (abfd)->exec_flags; 4240 4241 /* Oh joys. Ram some of the BSS data into the DATA section 4242 to be compatible with how the hp linker makes objects 4243 (saves memory space). */ 4244 tmp = exec_header->exec_dsize; 4245 tmp = SOM_ALIGN (tmp, PA_PAGESIZE); 4246 exec_header->exec_bsize -= (tmp - exec_header->exec_dsize); 4247 if (exec_header->exec_bsize < 0) 4248 exec_header->exec_bsize = 0; 4249 exec_header->exec_dsize = tmp; 4250 4251 /* Now perform some sanity checks. The idea is to catch bogons now and 4252 inform the user, instead of silently generating a bogus file. */ 4253 som_length = obj_som_file_hdr (abfd)->som_length; 4254 if (exec_header->exec_tfile + exec_header->exec_tsize > som_length 4255 || exec_header->exec_dfile + exec_header->exec_dsize > som_length) 4256 { 4257 bfd_set_error (bfd_error_bad_value); 4258 return FALSE; 4259 } 4260 4261 som_swap_exec_auxhdr_out (exec_header, &ext_exec_header); 4262 4263 if (bfd_seek (abfd, obj_som_file_hdr (abfd)->aux_header_location, 4264 SEEK_SET) != 0) 4265 return FALSE; 4266 4267 amt = sizeof (ext_exec_header); 4268 if (bfd_bwrite (&ext_exec_header, amt, abfd) != amt) 4269 return FALSE; 4270 } 4271 return TRUE; 4272 } 4273 4274 /* Compute and return the checksum for a SOM file header. */ 4275 4276 static unsigned long 4277 som_compute_checksum (struct som_external_header *hdr) 4278 { 4279 unsigned long checksum, count, i; 4280 unsigned long *buffer = (unsigned long *) hdr; 4281 4282 checksum = 0; 4283 count = sizeof (struct som_external_header) / 4; 4284 for (i = 0; i < count; i++) 4285 checksum ^= *(buffer + i); 4286 4287 return checksum; 4288 } 4289 4290 static void 4291 som_bfd_derive_misc_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, 4292 asymbol *sym, 4293 struct som_misc_symbol_info *info) 4294 { 4295 /* Initialize. */ 4296 memset (info, 0, sizeof (struct som_misc_symbol_info)); 4297 4298 /* The HP SOM linker requires detailed type information about 4299 all symbols (including undefined symbols!). Unfortunately, 4300 the type specified in an import/export statement does not 4301 always match what the linker wants. Severe braindamage. */ 4302 4303 /* Section symbols will not have a SOM symbol type assigned to 4304 them yet. Assign all section symbols type ST_DATA. */ 4305 if (sym->flags & BSF_SECTION_SYM) 4306 info->symbol_type = ST_DATA; 4307 else 4308 { 4309 /* For BFD style common, the linker will choke unless we set the 4310 type and scope to ST_STORAGE and SS_UNSAT, respectively. */ 4311 if (bfd_is_com_section (sym->section)) 4312 { 4313 info->symbol_type = ST_STORAGE; 4314 info->symbol_scope = SS_UNSAT; 4315 } 4316 4317 /* It is possible to have a symbol without an associated 4318 type. This happens if the user imported the symbol 4319 without a type and the symbol was never defined 4320 locally. If BSF_FUNCTION is set for this symbol, then 4321 assign it type ST_CODE (the HP linker requires undefined 4322 external functions to have type ST_CODE rather than ST_ENTRY). */ 4323 else if ((som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN 4324 || som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE) 4325 && bfd_is_und_section (sym->section) 4326 && sym->flags & BSF_FUNCTION) 4327 info->symbol_type = ST_CODE; 4328 4329 /* Handle function symbols which were defined in this file. 4330 They should have type ST_ENTRY. Also retrieve the argument 4331 relocation bits from the SOM backend information. */ 4332 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ENTRY 4333 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE 4334 && (sym->flags & BSF_FUNCTION)) 4335 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN 4336 && (sym->flags & BSF_FUNCTION))) 4337 { 4338 info->symbol_type = ST_ENTRY; 4339 info->arg_reloc = som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc; 4340 info->priv_level= som_symbol_data (sym)->tc_data.ap.hppa_priv_level; 4341 } 4342 4343 /* For unknown symbols set the symbol's type based on the symbol's 4344 section (ST_DATA for DATA sections, ST_CODE for CODE sections). */ 4345 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN) 4346 { 4347 if (bfd_is_abs_section (sym->section)) 4348 info->symbol_type = ST_ABSOLUTE; 4349 else if (sym->section->flags & SEC_CODE) 4350 info->symbol_type = ST_CODE; 4351 else 4352 info->symbol_type = ST_DATA; 4353 } 4354 4355 /* From now on it's a very simple mapping. */ 4356 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ABSOLUTE) 4357 info->symbol_type = ST_ABSOLUTE; 4358 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE) 4359 info->symbol_type = ST_CODE; 4360 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_DATA) 4361 info->symbol_type = ST_DATA; 4362 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_MILLICODE) 4363 info->symbol_type = ST_MILLICODE; 4364 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PLABEL) 4365 info->symbol_type = ST_PLABEL; 4366 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PRI_PROG) 4367 info->symbol_type = ST_PRI_PROG; 4368 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_SEC_PROG) 4369 info->symbol_type = ST_SEC_PROG; 4370 } 4371 4372 /* Now handle the symbol's scope. Exported data which is not 4373 in the common section has scope SS_UNIVERSAL. Note scope 4374 of common symbols was handled earlier! */ 4375 if (bfd_is_com_section (sym->section)) 4376 ; 4377 else if (bfd_is_und_section (sym->section)) 4378 info->symbol_scope = SS_UNSAT; 4379 else if (sym->flags & (BSF_EXPORT | BSF_WEAK)) 4380 info->symbol_scope = SS_UNIVERSAL; 4381 /* Anything else which is not in the common section has scope 4382 SS_LOCAL. */ 4383 else 4384 info->symbol_scope = SS_LOCAL; 4385 4386 /* Now set the symbol_info field. It has no real meaning 4387 for undefined or common symbols, but the HP linker will 4388 choke if it's not set to some "reasonable" value. We 4389 use zero as a reasonable value. */ 4390 if (bfd_is_com_section (sym->section) 4391 || bfd_is_und_section (sym->section) 4392 || bfd_is_abs_section (sym->section)) 4393 info->symbol_info = 0; 4394 /* For all other symbols, the symbol_info field contains the 4395 subspace index of the space this symbol is contained in. */ 4396 else 4397 info->symbol_info = sym->section->target_index; 4398 4399 /* Set the symbol's value. */ 4400 info->symbol_value = sym->value + sym->section->vma; 4401 4402 /* The secondary_def field is for "weak" symbols. */ 4403 if (sym->flags & BSF_WEAK) 4404 info->secondary_def = TRUE; 4405 else 4406 info->secondary_def = FALSE; 4407 4408 /* The is_comdat, is_common and dup_common fields provide various 4409 flavors of common. 4410 4411 For data symbols, setting IS_COMMON provides Fortran style common 4412 (duplicate definitions and overlapped initialization). Setting both 4413 IS_COMMON and DUP_COMMON provides Cobol style common (duplicate 4414 definitions as long as they are all the same length). In a shared 4415 link data symbols retain their IS_COMMON and DUP_COMMON flags. 4416 An IS_COMDAT data symbol is similar to a IS_COMMON | DUP_COMMON 4417 symbol except in that it loses its IS_COMDAT flag in a shared link. 4418 4419 For code symbols, IS_COMDAT and DUP_COMMON have effect. Universal 4420 DUP_COMMON code symbols are not exported from shared libraries. 4421 IS_COMDAT symbols are exported but they lose their IS_COMDAT flag. 4422 4423 We take a simplified approach to setting the is_comdat, is_common 4424 and dup_common flags in symbols based on the flag settings of their 4425 subspace. This avoids having to add directives like `.comdat' but 4426 the linker behavior is probably undefined if there is more than one 4427 universal symbol (comdat key sysmbol) in a subspace. 4428 4429 The behavior of these flags is not well documentmented, so there 4430 may be bugs and some surprising interactions with other flags. */ 4431 if (som_section_data (sym->section) 4432 && som_section_data (sym->section)->subspace_dict 4433 && info->symbol_scope == SS_UNIVERSAL 4434 && (info->symbol_type == ST_ENTRY 4435 || info->symbol_type == ST_CODE 4436 || info->symbol_type == ST_DATA)) 4437 { 4438 info->is_comdat 4439 = som_section_data (sym->section)->subspace_dict->is_comdat; 4440 info->is_common 4441 = som_section_data (sym->section)->subspace_dict->is_common; 4442 info->dup_common 4443 = som_section_data (sym->section)->subspace_dict->dup_common; 4444 } 4445 } 4446 4447 /* Build and write, in one big chunk, the entire symbol table for 4448 this BFD. */ 4449 4450 static bfd_boolean 4451 som_build_and_write_symbol_table (bfd *abfd) 4452 { 4453 unsigned int num_syms = bfd_get_symcount (abfd); 4454 file_ptr symtab_location = obj_som_file_hdr (abfd)->symbol_location; 4455 asymbol **bfd_syms = obj_som_sorted_syms (abfd); 4456 struct som_external_symbol_dictionary_record *som_symtab = NULL; 4457 unsigned int i; 4458 bfd_size_type symtab_size; 4459 4460 /* Compute total symbol table size and allocate a chunk of memory 4461 to hold the symbol table as we build it. */ 4462 som_symtab 4463 = bfd_zmalloc2 (num_syms, 4464 sizeof (struct som_external_symbol_dictionary_record)); 4465 if (som_symtab == NULL && num_syms != 0) 4466 goto error_return; 4467 4468 /* Walk over each symbol. */ 4469 for (i = 0; i < num_syms; i++) 4470 { 4471 struct som_misc_symbol_info info; 4472 unsigned int flags; 4473 4474 /* This is really an index into the symbol strings table. 4475 By the time we get here, the index has already been 4476 computed and stored into the name field in the BFD symbol. */ 4477 bfd_putb32 (som_symbol_data (bfd_syms[i])->stringtab_offset, 4478 som_symtab[i].name); 4479 4480 /* Derive SOM information from the BFD symbol. */ 4481 som_bfd_derive_misc_symbol_info (abfd, bfd_syms[i], &info); 4482 4483 /* Now use it. */ 4484 flags = (info.symbol_type << SOM_SYMBOL_TYPE_SH) 4485 | (info.symbol_scope << SOM_SYMBOL_SCOPE_SH) 4486 | (info.arg_reloc << SOM_SYMBOL_ARG_RELOC_SH) 4487 | (3 << SOM_SYMBOL_XLEAST_SH) 4488 | (info.secondary_def ? SOM_SYMBOL_SECONDARY_DEF : 0) 4489 | (info.is_common ? SOM_SYMBOL_IS_COMMON : 0) 4490 | (info.dup_common ? SOM_SYMBOL_DUP_COMMON : 0); 4491 bfd_putb32 (flags, som_symtab[i].flags); 4492 4493 flags = (info.symbol_info << SOM_SYMBOL_SYMBOL_INFO_SH) 4494 | (info.is_comdat ? SOM_SYMBOL_IS_COMDAT : 0); 4495 bfd_putb32 (flags, som_symtab[i].info); 4496 bfd_putb32 (info.symbol_value | info.priv_level, 4497 som_symtab[i].symbol_value); 4498 } 4499 4500 /* Everything is ready, seek to the right location and 4501 scribble out the symbol table. */ 4502 if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0) 4503 return FALSE; 4504 4505 symtab_size = num_syms; 4506 symtab_size *= sizeof (struct som_external_symbol_dictionary_record); 4507 if (bfd_bwrite ((void *) som_symtab, symtab_size, abfd) != symtab_size) 4508 goto error_return; 4509 4510 if (som_symtab != NULL) 4511 free (som_symtab); 4512 return TRUE; 4513 error_return: 4514 if (som_symtab != NULL) 4515 free (som_symtab); 4516 return FALSE; 4517 } 4518 4519 /* Write an object in SOM format. */ 4520 4521 static bfd_boolean 4522 som_write_object_contents (bfd *abfd) 4523 { 4524 if (! abfd->output_has_begun) 4525 { 4526 /* Set up fixed parts of the file, space, and subspace headers. 4527 Notify the world that output has begun. */ 4528 som_prep_headers (abfd); 4529 abfd->output_has_begun = TRUE; 4530 /* Start writing the object file. This include all the string 4531 tables, fixup streams, and other portions of the object file. */ 4532 som_begin_writing (abfd); 4533 } 4534 4535 return som_finish_writing (abfd); 4536 } 4537 4538 /* Read and save the string table associated with the given BFD. */ 4539 4540 static bfd_boolean 4541 som_slurp_string_table (bfd *abfd) 4542 { 4543 char *stringtab; 4544 bfd_size_type amt; 4545 4546 /* Use the saved version if its available. */ 4547 if (obj_som_stringtab (abfd) != NULL) 4548 return TRUE; 4549 4550 /* I don't think this can currently happen, and I'm not sure it should 4551 really be an error, but it's better than getting unpredictable results 4552 from the host's malloc when passed a size of zero. */ 4553 if (obj_som_stringtab_size (abfd) == 0) 4554 { 4555 bfd_set_error (bfd_error_no_symbols); 4556 return FALSE; 4557 } 4558 4559 /* Allocate and read in the string table. */ 4560 amt = obj_som_stringtab_size (abfd); 4561 stringtab = bfd_zmalloc (amt); 4562 if (stringtab == NULL) 4563 return FALSE; 4564 4565 if (bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET) != 0) 4566 return FALSE; 4567 4568 if (bfd_bread (stringtab, amt, abfd) != amt) 4569 return FALSE; 4570 4571 /* Save our results and return success. */ 4572 obj_som_stringtab (abfd) = stringtab; 4573 return TRUE; 4574 } 4575 4576 /* Return the amount of data (in bytes) required to hold the symbol 4577 table for this object. */ 4578 4579 static long 4580 som_get_symtab_upper_bound (bfd *abfd) 4581 { 4582 if (!som_slurp_symbol_table (abfd)) 4583 return -1; 4584 4585 return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *); 4586 } 4587 4588 /* Convert from a SOM subspace index to a BFD section. */ 4589 4590 asection * 4591 bfd_section_from_som_symbol 4592 (bfd *abfd, struct som_external_symbol_dictionary_record *symbol) 4593 { 4594 asection *section; 4595 unsigned int flags = bfd_getb32 (symbol->flags); 4596 unsigned int symbol_type = (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK; 4597 4598 /* The meaning of the symbol_info field changes for functions 4599 within executables. So only use the quick symbol_info mapping for 4600 incomplete objects and non-function symbols in executables. */ 4601 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 4602 || (symbol_type != ST_ENTRY 4603 && symbol_type != ST_PRI_PROG 4604 && symbol_type != ST_SEC_PROG 4605 && symbol_type != ST_MILLICODE)) 4606 { 4607 int idx = (bfd_getb32 (symbol->info) >> SOM_SYMBOL_SYMBOL_INFO_SH) 4608 & SOM_SYMBOL_SYMBOL_INFO_MASK; 4609 4610 for (section = abfd->sections; section != NULL; section = section->next) 4611 if (section->target_index == idx && som_is_subspace (section)) 4612 return section; 4613 } 4614 else 4615 { 4616 unsigned int value = bfd_getb32 (symbol->symbol_value); 4617 4618 /* For executables we will have to use the symbol's address and 4619 find out what section would contain that address. Yuk. */ 4620 for (section = abfd->sections; section; section = section->next) 4621 if (value >= section->vma 4622 && value <= section->vma + section->size 4623 && som_is_subspace (section)) 4624 return section; 4625 } 4626 4627 /* Could be a symbol from an external library (such as an OMOS 4628 shared library). Don't abort. */ 4629 return bfd_abs_section_ptr; 4630 } 4631 4632 /* Read and save the symbol table associated with the given BFD. */ 4633 4634 static unsigned int 4635 som_slurp_symbol_table (bfd *abfd) 4636 { 4637 int symbol_count = bfd_get_symcount (abfd); 4638 int symsize = sizeof (struct som_external_symbol_dictionary_record); 4639 char *stringtab; 4640 struct som_external_symbol_dictionary_record *buf = NULL, *bufp, *endbufp; 4641 som_symbol_type *sym, *symbase; 4642 bfd_size_type amt; 4643 4644 /* Return saved value if it exists. */ 4645 if (obj_som_symtab (abfd) != NULL) 4646 goto successful_return; 4647 4648 /* Special case. This is *not* an error. */ 4649 if (symbol_count == 0) 4650 goto successful_return; 4651 4652 if (!som_slurp_string_table (abfd)) 4653 goto error_return; 4654 4655 stringtab = obj_som_stringtab (abfd); 4656 4657 symbase = bfd_zmalloc2 (symbol_count, sizeof (som_symbol_type)); 4658 if (symbase == NULL) 4659 goto error_return; 4660 4661 /* Read in the external SOM representation. */ 4662 buf = bfd_malloc2 (symbol_count, symsize); 4663 if (buf == NULL) 4664 goto error_return; 4665 if (bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET) != 0) 4666 goto error_return; 4667 amt = symbol_count; 4668 amt *= symsize; 4669 if (bfd_bread (buf, amt, abfd) != amt) 4670 goto error_return; 4671 4672 /* Iterate over all the symbols and internalize them. */ 4673 endbufp = buf + symbol_count; 4674 for (bufp = buf, sym = symbase; bufp < endbufp; ++bufp) 4675 { 4676 unsigned int flags = bfd_getb32 (bufp->flags); 4677 unsigned int symbol_type = 4678 (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK; 4679 unsigned int symbol_scope = 4680 (flags >> SOM_SYMBOL_SCOPE_SH) & SOM_SYMBOL_SCOPE_MASK; 4681 4682 /* I don't think we care about these. */ 4683 if (symbol_type == ST_SYM_EXT || symbol_type == ST_ARG_EXT) 4684 continue; 4685 4686 /* Set some private data we care about. */ 4687 if (symbol_type == ST_NULL) 4688 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN; 4689 else if (symbol_type == ST_ABSOLUTE) 4690 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ABSOLUTE; 4691 else if (symbol_type == ST_DATA) 4692 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA; 4693 else if (symbol_type == ST_CODE) 4694 som_symbol_data (sym)->som_type = SYMBOL_TYPE_CODE; 4695 else if (symbol_type == ST_PRI_PROG) 4696 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PRI_PROG; 4697 else if (symbol_type == ST_SEC_PROG) 4698 som_symbol_data (sym)->som_type = SYMBOL_TYPE_SEC_PROG; 4699 else if (symbol_type == ST_ENTRY) 4700 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ENTRY; 4701 else if (symbol_type == ST_MILLICODE) 4702 som_symbol_data (sym)->som_type = SYMBOL_TYPE_MILLICODE; 4703 else if (symbol_type == ST_PLABEL) 4704 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PLABEL; 4705 else 4706 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN; 4707 som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc = 4708 (flags >> SOM_SYMBOL_ARG_RELOC_SH) & SOM_SYMBOL_ARG_RELOC_MASK; 4709 4710 /* Some reasonable defaults. */ 4711 sym->symbol.the_bfd = abfd; 4712 sym->symbol.name = bfd_getb32 (bufp->name) + stringtab; 4713 sym->symbol.value = bfd_getb32 (bufp->symbol_value); 4714 sym->symbol.section = 0; 4715 sym->symbol.flags = 0; 4716 4717 switch (symbol_type) 4718 { 4719 case ST_ENTRY: 4720 case ST_MILLICODE: 4721 sym->symbol.flags |= BSF_FUNCTION; 4722 som_symbol_data (sym)->tc_data.ap.hppa_priv_level = 4723 sym->symbol.value & 0x3; 4724 sym->symbol.value &= ~0x3; 4725 break; 4726 4727 case ST_STUB: 4728 case ST_CODE: 4729 case ST_PRI_PROG: 4730 case ST_SEC_PROG: 4731 som_symbol_data (sym)->tc_data.ap.hppa_priv_level = 4732 sym->symbol.value & 0x3; 4733 sym->symbol.value &= ~0x3; 4734 /* If the symbol's scope is SS_UNSAT, then these are 4735 undefined function symbols. */ 4736 if (symbol_scope == SS_UNSAT) 4737 sym->symbol.flags |= BSF_FUNCTION; 4738 4739 default: 4740 break; 4741 } 4742 4743 /* Handle scoping and section information. */ 4744 switch (symbol_scope) 4745 { 4746 /* symbol_info field is undefined for SS_EXTERNAL and SS_UNSAT symbols, 4747 so the section associated with this symbol can't be known. */ 4748 case SS_EXTERNAL: 4749 if (symbol_type != ST_STORAGE) 4750 sym->symbol.section = bfd_und_section_ptr; 4751 else 4752 sym->symbol.section = bfd_com_section_ptr; 4753 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL); 4754 break; 4755 4756 case SS_UNSAT: 4757 if (symbol_type != ST_STORAGE) 4758 sym->symbol.section = bfd_und_section_ptr; 4759 else 4760 sym->symbol.section = bfd_com_section_ptr; 4761 break; 4762 4763 case SS_UNIVERSAL: 4764 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL); 4765 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp); 4766 sym->symbol.value -= sym->symbol.section->vma; 4767 break; 4768 4769 case SS_LOCAL: 4770 sym->symbol.flags |= BSF_LOCAL; 4771 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp); 4772 sym->symbol.value -= sym->symbol.section->vma; 4773 break; 4774 } 4775 4776 /* Check for a weak symbol. */ 4777 if (flags & SOM_SYMBOL_SECONDARY_DEF) 4778 sym->symbol.flags |= BSF_WEAK; 4779 4780 /* Mark section symbols and symbols used by the debugger. 4781 Note $START$ is a magic code symbol, NOT a section symbol. */ 4782 if (sym->symbol.name[0] == '$' 4783 && sym->symbol.name[strlen (sym->symbol.name) - 1] == '$' 4784 && !strcmp (sym->symbol.name, sym->symbol.section->name)) 4785 sym->symbol.flags |= BSF_SECTION_SYM; 4786 else if (CONST_STRNEQ (sym->symbol.name, "L$0\002")) 4787 { 4788 sym->symbol.flags |= BSF_SECTION_SYM; 4789 sym->symbol.name = sym->symbol.section->name; 4790 } 4791 else if (CONST_STRNEQ (sym->symbol.name, "L$0\001")) 4792 sym->symbol.flags |= BSF_DEBUGGING; 4793 4794 /* Note increment at bottom of loop, since we skip some symbols 4795 we can not include it as part of the for statement. */ 4796 sym++; 4797 } 4798 4799 /* We modify the symbol count to record the number of BFD symbols we 4800 created. */ 4801 abfd->symcount = sym - symbase; 4802 4803 /* Save our results and return success. */ 4804 obj_som_symtab (abfd) = symbase; 4805 successful_return: 4806 if (buf != NULL) 4807 free (buf); 4808 return (TRUE); 4809 4810 error_return: 4811 if (buf != NULL) 4812 free (buf); 4813 return FALSE; 4814 } 4815 4816 /* Canonicalize a SOM symbol table. Return the number of entries 4817 in the symbol table. */ 4818 4819 static long 4820 som_canonicalize_symtab (bfd *abfd, asymbol **location) 4821 { 4822 int i; 4823 som_symbol_type *symbase; 4824 4825 if (!som_slurp_symbol_table (abfd)) 4826 return -1; 4827 4828 i = bfd_get_symcount (abfd); 4829 symbase = obj_som_symtab (abfd); 4830 4831 for (; i > 0; i--, location++, symbase++) 4832 *location = &symbase->symbol; 4833 4834 /* Final null pointer. */ 4835 *location = 0; 4836 return (bfd_get_symcount (abfd)); 4837 } 4838 4839 /* Make a SOM symbol. There is nothing special to do here. */ 4840 4841 static asymbol * 4842 som_make_empty_symbol (bfd *abfd) 4843 { 4844 bfd_size_type amt = sizeof (som_symbol_type); 4845 som_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt); 4846 4847 if (new_symbol_type == NULL) 4848 return NULL; 4849 new_symbol_type->symbol.the_bfd = abfd; 4850 4851 return &new_symbol_type->symbol; 4852 } 4853 4854 /* Print symbol information. */ 4855 4856 static void 4857 som_print_symbol (bfd *abfd, 4858 void *afile, 4859 asymbol *symbol, 4860 bfd_print_symbol_type how) 4861 { 4862 FILE *file = (FILE *) afile; 4863 4864 switch (how) 4865 { 4866 case bfd_print_symbol_name: 4867 fprintf (file, "%s", symbol->name); 4868 break; 4869 case bfd_print_symbol_more: 4870 fprintf (file, "som "); 4871 fprintf_vma (file, symbol->value); 4872 fprintf (file, " %lx", (long) symbol->flags); 4873 break; 4874 case bfd_print_symbol_all: 4875 { 4876 const char *section_name; 4877 4878 section_name = symbol->section ? symbol->section->name : "(*none*)"; 4879 bfd_print_symbol_vandf (abfd, (void *) file, symbol); 4880 fprintf (file, " %s\t%s", section_name, symbol->name); 4881 break; 4882 } 4883 } 4884 } 4885 4886 static bfd_boolean 4887 som_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, 4888 const char *name) 4889 { 4890 return name[0] == 'L' && name[1] == '$'; 4891 } 4892 4893 /* Count or process variable-length SOM fixup records. 4894 4895 To avoid code duplication we use this code both to compute the number 4896 of relocations requested by a stream, and to internalize the stream. 4897 4898 When computing the number of relocations requested by a stream the 4899 variables rptr, section, and symbols have no meaning. 4900 4901 Return the number of relocations requested by the fixup stream. When 4902 not just counting 4903 4904 This needs at least two or three more passes to get it cleaned up. */ 4905 4906 static unsigned int 4907 som_set_reloc_info (unsigned char *fixup, 4908 unsigned int end, 4909 arelent *internal_relocs, 4910 asection *section, 4911 asymbol **symbols, 4912 bfd_boolean just_count) 4913 { 4914 unsigned int op, varname, deallocate_contents = 0; 4915 unsigned char *end_fixups = &fixup[end]; 4916 const struct fixup_format *fp; 4917 const char *cp; 4918 unsigned char *save_fixup; 4919 int variables[26], stack[20], c, v, count, prev_fixup, *sp, saved_unwind_bits; 4920 const int *subop; 4921 arelent *rptr = internal_relocs; 4922 unsigned int offset = 0; 4923 4924 #define var(c) variables[(c) - 'A'] 4925 #define push(v) (*sp++ = (v)) 4926 #define pop() (*--sp) 4927 #define emptystack() (sp == stack) 4928 4929 som_initialize_reloc_queue (reloc_queue); 4930 memset (variables, 0, sizeof (variables)); 4931 memset (stack, 0, sizeof (stack)); 4932 count = 0; 4933 prev_fixup = 0; 4934 saved_unwind_bits = 0; 4935 sp = stack; 4936 4937 while (fixup < end_fixups) 4938 { 4939 /* Save pointer to the start of this fixup. We'll use 4940 it later to determine if it is necessary to put this fixup 4941 on the queue. */ 4942 save_fixup = fixup; 4943 4944 /* Get the fixup code and its associated format. */ 4945 op = *fixup++; 4946 fp = &som_fixup_formats[op]; 4947 4948 /* Handle a request for a previous fixup. */ 4949 if (*fp->format == 'P') 4950 { 4951 /* Get pointer to the beginning of the prev fixup, move 4952 the repeated fixup to the head of the queue. */ 4953 fixup = reloc_queue[fp->D].reloc; 4954 som_reloc_queue_fix (reloc_queue, fp->D); 4955 prev_fixup = 1; 4956 4957 /* Get the fixup code and its associated format. */ 4958 op = *fixup++; 4959 fp = &som_fixup_formats[op]; 4960 } 4961 4962 /* If this fixup will be passed to BFD, set some reasonable defaults. */ 4963 if (! just_count 4964 && som_hppa_howto_table[op].type != R_NO_RELOCATION 4965 && som_hppa_howto_table[op].type != R_DATA_OVERRIDE) 4966 { 4967 rptr->address = offset; 4968 rptr->howto = &som_hppa_howto_table[op]; 4969 rptr->addend = 0; 4970 rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 4971 } 4972 4973 /* Set default input length to 0. Get the opcode class index 4974 into D. */ 4975 var ('L') = 0; 4976 var ('D') = fp->D; 4977 var ('U') = saved_unwind_bits; 4978 4979 /* Get the opcode format. */ 4980 cp = fp->format; 4981 4982 /* Process the format string. Parsing happens in two phases, 4983 parse RHS, then assign to LHS. Repeat until no more 4984 characters in the format string. */ 4985 while (*cp) 4986 { 4987 /* The variable this pass is going to compute a value for. */ 4988 varname = *cp++; 4989 4990 /* Start processing RHS. Continue until a NULL or '=' is found. */ 4991 do 4992 { 4993 c = *cp++; 4994 4995 /* If this is a variable, push it on the stack. */ 4996 if (ISUPPER (c)) 4997 push (var (c)); 4998 4999 /* If this is a lower case letter, then it represents 5000 additional data from the fixup stream to be pushed onto 5001 the stack. */ 5002 else if (ISLOWER (c)) 5003 { 5004 int bits = (c - 'a') * 8; 5005 for (v = 0; c > 'a'; --c) 5006 v = (v << 8) | *fixup++; 5007 if (varname == 'V') 5008 v = sign_extend (v, bits); 5009 push (v); 5010 } 5011 5012 /* A decimal constant. Push it on the stack. */ 5013 else if (ISDIGIT (c)) 5014 { 5015 v = c - '0'; 5016 while (ISDIGIT (*cp)) 5017 v = (v * 10) + (*cp++ - '0'); 5018 push (v); 5019 } 5020 else 5021 /* An operator. Pop two values from the stack and 5022 use them as operands to the given operation. Push 5023 the result of the operation back on the stack. */ 5024 switch (c) 5025 { 5026 case '+': 5027 v = pop (); 5028 v += pop (); 5029 push (v); 5030 break; 5031 case '*': 5032 v = pop (); 5033 v *= pop (); 5034 push (v); 5035 break; 5036 case '<': 5037 v = pop (); 5038 v = pop () << v; 5039 push (v); 5040 break; 5041 default: 5042 abort (); 5043 } 5044 } 5045 while (*cp && *cp != '='); 5046 5047 /* Move over the equal operator. */ 5048 cp++; 5049 5050 /* Pop the RHS off the stack. */ 5051 c = pop (); 5052 5053 /* Perform the assignment. */ 5054 var (varname) = c; 5055 5056 /* Handle side effects. and special 'O' stack cases. */ 5057 switch (varname) 5058 { 5059 /* Consume some bytes from the input space. */ 5060 case 'L': 5061 offset += c; 5062 break; 5063 /* A symbol to use in the relocation. Make a note 5064 of this if we are not just counting. */ 5065 case 'S': 5066 if (! just_count) 5067 rptr->sym_ptr_ptr = &symbols[c]; 5068 break; 5069 /* Argument relocation bits for a function call. */ 5070 case 'R': 5071 if (! just_count) 5072 { 5073 unsigned int tmp = var ('R'); 5074 rptr->addend = 0; 5075 5076 if ((som_hppa_howto_table[op].type == R_PCREL_CALL 5077 && R_PCREL_CALL + 10 > op) 5078 || (som_hppa_howto_table[op].type == R_ABS_CALL 5079 && R_ABS_CALL + 10 > op)) 5080 { 5081 /* Simple encoding. */ 5082 if (tmp > 4) 5083 { 5084 tmp -= 5; 5085 rptr->addend |= 1; 5086 } 5087 if (tmp == 4) 5088 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2; 5089 else if (tmp == 3) 5090 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4; 5091 else if (tmp == 2) 5092 rptr->addend |= 1 << 8 | 1 << 6; 5093 else if (tmp == 1) 5094 rptr->addend |= 1 << 8; 5095 } 5096 else 5097 { 5098 unsigned int tmp1, tmp2; 5099 5100 /* First part is easy -- low order two bits are 5101 directly copied, then shifted away. */ 5102 rptr->addend = tmp & 0x3; 5103 tmp >>= 2; 5104 5105 /* Diving the result by 10 gives us the second 5106 part. If it is 9, then the first two words 5107 are a double precision paramater, else it is 5108 3 * the first arg bits + the 2nd arg bits. */ 5109 tmp1 = tmp / 10; 5110 tmp -= tmp1 * 10; 5111 if (tmp1 == 9) 5112 rptr->addend += (0xe << 6); 5113 else 5114 { 5115 /* Get the two pieces. */ 5116 tmp2 = tmp1 / 3; 5117 tmp1 -= tmp2 * 3; 5118 /* Put them in the addend. */ 5119 rptr->addend += (tmp2 << 8) + (tmp1 << 6); 5120 } 5121 5122 /* What's left is the third part. It's unpacked 5123 just like the second. */ 5124 if (tmp == 9) 5125 rptr->addend += (0xe << 2); 5126 else 5127 { 5128 tmp2 = tmp / 3; 5129 tmp -= tmp2 * 3; 5130 rptr->addend += (tmp2 << 4) + (tmp << 2); 5131 } 5132 } 5133 rptr->addend = HPPA_R_ADDEND (rptr->addend, 0); 5134 } 5135 break; 5136 /* Handle the linker expression stack. */ 5137 case 'O': 5138 switch (op) 5139 { 5140 case R_COMP1: 5141 subop = comp1_opcodes; 5142 break; 5143 case R_COMP2: 5144 subop = comp2_opcodes; 5145 break; 5146 case R_COMP3: 5147 subop = comp3_opcodes; 5148 break; 5149 default: 5150 abort (); 5151 } 5152 while (*subop <= (unsigned char) c) 5153 ++subop; 5154 --subop; 5155 break; 5156 /* The lower 32unwind bits must be persistent. */ 5157 case 'U': 5158 saved_unwind_bits = var ('U'); 5159 break; 5160 5161 default: 5162 break; 5163 } 5164 } 5165 5166 /* If we used a previous fixup, clean up after it. */ 5167 if (prev_fixup) 5168 { 5169 fixup = save_fixup + 1; 5170 prev_fixup = 0; 5171 } 5172 /* Queue it. */ 5173 else if (fixup > save_fixup + 1) 5174 som_reloc_queue_insert (save_fixup, fixup - save_fixup, reloc_queue); 5175 5176 /* We do not pass R_DATA_OVERRIDE or R_NO_RELOCATION 5177 fixups to BFD. */ 5178 if (som_hppa_howto_table[op].type != R_DATA_OVERRIDE 5179 && som_hppa_howto_table[op].type != R_NO_RELOCATION) 5180 { 5181 /* Done with a single reloction. Loop back to the top. */ 5182 if (! just_count) 5183 { 5184 if (som_hppa_howto_table[op].type == R_ENTRY) 5185 rptr->addend = var ('T'); 5186 else if (som_hppa_howto_table[op].type == R_EXIT) 5187 rptr->addend = var ('U'); 5188 else if (som_hppa_howto_table[op].type == R_PCREL_CALL 5189 || som_hppa_howto_table[op].type == R_ABS_CALL) 5190 ; 5191 else if (som_hppa_howto_table[op].type == R_DATA_ONE_SYMBOL) 5192 { 5193 /* Try what was specified in R_DATA_OVERRIDE first 5194 (if anything). Then the hard way using the 5195 section contents. */ 5196 rptr->addend = var ('V'); 5197 5198 if (rptr->addend == 0 && !section->contents) 5199 { 5200 /* Got to read the damn contents first. We don't 5201 bother saving the contents (yet). Add it one 5202 day if the need arises. */ 5203 bfd_byte *contents; 5204 if (!bfd_malloc_and_get_section (section->owner, section, 5205 &contents)) 5206 { 5207 if (contents != NULL) 5208 free (contents); 5209 return (unsigned) -1; 5210 } 5211 section->contents = contents; 5212 deallocate_contents = 1; 5213 } 5214 else if (rptr->addend == 0) 5215 rptr->addend = bfd_get_32 (section->owner, 5216 (section->contents 5217 + offset - var ('L'))); 5218 5219 } 5220 else 5221 rptr->addend = var ('V'); 5222 rptr++; 5223 } 5224 count++; 5225 /* Now that we've handled a "full" relocation, reset 5226 some state. */ 5227 memset (variables, 0, sizeof (variables)); 5228 memset (stack, 0, sizeof (stack)); 5229 } 5230 } 5231 if (deallocate_contents) 5232 free (section->contents); 5233 5234 return count; 5235 5236 #undef var 5237 #undef push 5238 #undef pop 5239 #undef emptystack 5240 } 5241 5242 /* Read in the relocs (aka fixups in SOM terms) for a section. 5243 5244 som_get_reloc_upper_bound calls this routine with JUST_COUNT 5245 set to TRUE to indicate it only needs a count of the number 5246 of actual relocations. */ 5247 5248 static bfd_boolean 5249 som_slurp_reloc_table (bfd *abfd, 5250 asection *section, 5251 asymbol **symbols, 5252 bfd_boolean just_count) 5253 { 5254 unsigned char *external_relocs; 5255 unsigned int fixup_stream_size; 5256 arelent *internal_relocs; 5257 unsigned int num_relocs; 5258 bfd_size_type amt; 5259 5260 fixup_stream_size = som_section_data (section)->reloc_size; 5261 /* If there were no relocations, then there is nothing to do. */ 5262 if (section->reloc_count == 0) 5263 return TRUE; 5264 5265 /* If reloc_count is -1, then the relocation stream has not been 5266 parsed. We must do so now to know how many relocations exist. */ 5267 if (section->reloc_count == (unsigned) -1) 5268 { 5269 amt = fixup_stream_size; 5270 external_relocs = bfd_malloc (amt); 5271 if (external_relocs == NULL) 5272 return FALSE; 5273 /* Read in the external forms. */ 5274 if (bfd_seek (abfd, 5275 obj_som_reloc_filepos (abfd) + section->rel_filepos, 5276 SEEK_SET) 5277 != 0) 5278 return FALSE; 5279 if (bfd_bread (external_relocs, amt, abfd) != amt) 5280 return FALSE; 5281 5282 /* Let callers know how many relocations found. 5283 also save the relocation stream as we will 5284 need it again. */ 5285 section->reloc_count = som_set_reloc_info (external_relocs, 5286 fixup_stream_size, 5287 NULL, NULL, NULL, TRUE); 5288 5289 som_section_data (section)->reloc_stream = external_relocs; 5290 } 5291 5292 /* If the caller only wanted a count, then return now. */ 5293 if (just_count) 5294 return TRUE; 5295 5296 num_relocs = section->reloc_count; 5297 external_relocs = som_section_data (section)->reloc_stream; 5298 /* Return saved information about the relocations if it is available. */ 5299 if (section->relocation != NULL) 5300 return TRUE; 5301 5302 internal_relocs = bfd_zalloc2 (abfd, num_relocs, sizeof (arelent)); 5303 if (internal_relocs == NULL) 5304 return FALSE; 5305 5306 /* Process and internalize the relocations. */ 5307 som_set_reloc_info (external_relocs, fixup_stream_size, 5308 internal_relocs, section, symbols, FALSE); 5309 5310 /* We're done with the external relocations. Free them. */ 5311 free (external_relocs); 5312 som_section_data (section)->reloc_stream = NULL; 5313 5314 /* Save our results and return success. */ 5315 section->relocation = internal_relocs; 5316 return TRUE; 5317 } 5318 5319 /* Return the number of bytes required to store the relocation 5320 information associated with the given section. */ 5321 5322 static long 5323 som_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) 5324 { 5325 /* If section has relocations, then read in the relocation stream 5326 and parse it to determine how many relocations exist. */ 5327 if (asect->flags & SEC_RELOC) 5328 { 5329 if (! som_slurp_reloc_table (abfd, asect, NULL, TRUE)) 5330 return -1; 5331 return (asect->reloc_count + 1) * sizeof (arelent *); 5332 } 5333 5334 /* There are no relocations. Return enough space to hold the 5335 NULL pointer which will be installed if som_canonicalize_reloc 5336 is called. */ 5337 return sizeof (arelent *); 5338 } 5339 5340 /* Convert relocations from SOM (external) form into BFD internal 5341 form. Return the number of relocations. */ 5342 5343 static long 5344 som_canonicalize_reloc (bfd *abfd, 5345 sec_ptr section, 5346 arelent **relptr, 5347 asymbol **symbols) 5348 { 5349 arelent *tblptr; 5350 int count; 5351 5352 if (! som_slurp_reloc_table (abfd, section, symbols, FALSE)) 5353 return -1; 5354 5355 count = section->reloc_count; 5356 tblptr = section->relocation; 5357 5358 while (count--) 5359 *relptr++ = tblptr++; 5360 5361 *relptr = NULL; 5362 return section->reloc_count; 5363 } 5364 5365 extern const bfd_target hppa_som_vec; 5366 5367 /* A hook to set up object file dependent section information. */ 5368 5369 static bfd_boolean 5370 som_new_section_hook (bfd *abfd, asection *newsect) 5371 { 5372 if (!newsect->used_by_bfd) 5373 { 5374 bfd_size_type amt = sizeof (struct som_section_data_struct); 5375 5376 newsect->used_by_bfd = bfd_zalloc (abfd, amt); 5377 if (!newsect->used_by_bfd) 5378 return FALSE; 5379 } 5380 newsect->alignment_power = 3; 5381 5382 /* We allow more than three sections internally. */ 5383 return _bfd_generic_new_section_hook (abfd, newsect); 5384 } 5385 5386 /* Copy any private info we understand from the input symbol 5387 to the output symbol. */ 5388 5389 static bfd_boolean 5390 som_bfd_copy_private_symbol_data (bfd *ibfd, 5391 asymbol *isymbol, 5392 bfd *obfd, 5393 asymbol *osymbol) 5394 { 5395 struct som_symbol *input_symbol = (struct som_symbol *) isymbol; 5396 struct som_symbol *output_symbol = (struct som_symbol *) osymbol; 5397 5398 /* One day we may try to grok other private data. */ 5399 if (ibfd->xvec->flavour != bfd_target_som_flavour 5400 || obfd->xvec->flavour != bfd_target_som_flavour) 5401 return FALSE; 5402 5403 /* The only private information we need to copy is the argument relocation 5404 bits. */ 5405 output_symbol->tc_data.ap.hppa_arg_reloc = 5406 input_symbol->tc_data.ap.hppa_arg_reloc; 5407 5408 return TRUE; 5409 } 5410 5411 /* Copy any private info we understand from the input section 5412 to the output section. */ 5413 5414 static bfd_boolean 5415 som_bfd_copy_private_section_data (bfd *ibfd, 5416 asection *isection, 5417 bfd *obfd, 5418 asection *osection) 5419 { 5420 bfd_size_type amt; 5421 5422 /* One day we may try to grok other private data. */ 5423 if (ibfd->xvec->flavour != bfd_target_som_flavour 5424 || obfd->xvec->flavour != bfd_target_som_flavour 5425 || (!som_is_space (isection) && !som_is_subspace (isection))) 5426 return TRUE; 5427 5428 amt = sizeof (struct som_copyable_section_data_struct); 5429 som_section_data (osection)->copy_data = bfd_zalloc (obfd, amt); 5430 if (som_section_data (osection)->copy_data == NULL) 5431 return FALSE; 5432 5433 memcpy (som_section_data (osection)->copy_data, 5434 som_section_data (isection)->copy_data, 5435 sizeof (struct som_copyable_section_data_struct)); 5436 5437 /* Reparent if necessary. */ 5438 if (som_section_data (osection)->copy_data->container) 5439 som_section_data (osection)->copy_data->container = 5440 som_section_data (osection)->copy_data->container->output_section; 5441 5442 return TRUE; 5443 } 5444 5445 /* Copy any private info we understand from the input bfd 5446 to the output bfd. */ 5447 5448 static bfd_boolean 5449 som_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) 5450 { 5451 /* One day we may try to grok other private data. */ 5452 if (ibfd->xvec->flavour != bfd_target_som_flavour 5453 || obfd->xvec->flavour != bfd_target_som_flavour) 5454 return TRUE; 5455 5456 /* Allocate some memory to hold the data we need. */ 5457 obj_som_exec_data (obfd) = bfd_zalloc (obfd, (bfd_size_type) sizeof (struct som_exec_data)); 5458 if (obj_som_exec_data (obfd) == NULL) 5459 return FALSE; 5460 5461 /* Now copy the data. */ 5462 memcpy (obj_som_exec_data (obfd), obj_som_exec_data (ibfd), 5463 sizeof (struct som_exec_data)); 5464 5465 return TRUE; 5466 } 5467 5468 /* Display the SOM header. */ 5469 5470 static bfd_boolean 5471 som_bfd_print_private_bfd_data (bfd *abfd, void *farg) 5472 { 5473 struct som_exec_auxhdr *exec_header; 5474 struct som_aux_id* auxhdr; 5475 FILE *f; 5476 5477 f = (FILE *) farg; 5478 5479 exec_header = obj_som_exec_hdr (abfd); 5480 if (exec_header) 5481 { 5482 fprintf (f, _("\nExec Auxiliary Header\n")); 5483 fprintf (f, " flags "); 5484 auxhdr = &exec_header->som_auxhdr; 5485 if (auxhdr->mandatory) 5486 fprintf (f, "mandatory "); 5487 if (auxhdr->copy) 5488 fprintf (f, "copy "); 5489 if (auxhdr->append) 5490 fprintf (f, "append "); 5491 if (auxhdr->ignore) 5492 fprintf (f, "ignore "); 5493 fprintf (f, "\n"); 5494 fprintf (f, " type %#x\n", auxhdr->type); 5495 fprintf (f, " length %#x\n", auxhdr->length); 5496 5497 /* Note that, depending on the HP-UX version, the following fields can be 5498 either ints, or longs. */ 5499 5500 fprintf (f, " text size %#lx\n", (long) exec_header->exec_tsize); 5501 fprintf (f, " text memory offset %#lx\n", (long) exec_header->exec_tmem); 5502 fprintf (f, " text file offset %#lx\n", (long) exec_header->exec_tfile); 5503 fprintf (f, " data size %#lx\n", (long) exec_header->exec_dsize); 5504 fprintf (f, " data memory offset %#lx\n", (long) exec_header->exec_dmem); 5505 fprintf (f, " data file offset %#lx\n", (long) exec_header->exec_dfile); 5506 fprintf (f, " bss size %#lx\n", (long) exec_header->exec_bsize); 5507 fprintf (f, " entry point %#lx\n", (long) exec_header->exec_entry); 5508 fprintf (f, " loader flags %#lx\n", (long) exec_header->exec_flags); 5509 fprintf (f, " bss initializer %#lx\n", (long) exec_header->exec_bfill); 5510 } 5511 5512 return TRUE; 5513 } 5514 5515 /* Set backend info for sections which can not be described 5516 in the BFD data structures. */ 5517 5518 bfd_boolean 5519 bfd_som_set_section_attributes (asection *section, 5520 int defined, 5521 int private, 5522 unsigned int sort_key, 5523 int spnum) 5524 { 5525 /* Allocate memory to hold the magic information. */ 5526 if (som_section_data (section)->copy_data == NULL) 5527 { 5528 bfd_size_type amt = sizeof (struct som_copyable_section_data_struct); 5529 5530 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt); 5531 if (som_section_data (section)->copy_data == NULL) 5532 return FALSE; 5533 } 5534 som_section_data (section)->copy_data->sort_key = sort_key; 5535 som_section_data (section)->copy_data->is_defined = defined; 5536 som_section_data (section)->copy_data->is_private = private; 5537 som_section_data (section)->copy_data->container = section; 5538 som_section_data (section)->copy_data->space_number = spnum; 5539 return TRUE; 5540 } 5541 5542 /* Set backend info for subsections which can not be described 5543 in the BFD data structures. */ 5544 5545 bfd_boolean 5546 bfd_som_set_subsection_attributes (asection *section, 5547 asection *container, 5548 int access_ctr, 5549 unsigned int sort_key, 5550 int quadrant, 5551 int comdat, 5552 int common, 5553 int dup_common) 5554 { 5555 /* Allocate memory to hold the magic information. */ 5556 if (som_section_data (section)->copy_data == NULL) 5557 { 5558 bfd_size_type amt = sizeof (struct som_copyable_section_data_struct); 5559 5560 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt); 5561 if (som_section_data (section)->copy_data == NULL) 5562 return FALSE; 5563 } 5564 som_section_data (section)->copy_data->sort_key = sort_key; 5565 som_section_data (section)->copy_data->access_control_bits = access_ctr; 5566 som_section_data (section)->copy_data->quadrant = quadrant; 5567 som_section_data (section)->copy_data->container = container; 5568 som_section_data (section)->copy_data->is_comdat = comdat; 5569 som_section_data (section)->copy_data->is_common = common; 5570 som_section_data (section)->copy_data->dup_common = dup_common; 5571 return TRUE; 5572 } 5573 5574 /* Set the full SOM symbol type. SOM needs far more symbol information 5575 than any other object file format I'm aware of. It is mandatory 5576 to be able to know if a symbol is an entry point, millicode, data, 5577 code, absolute, storage request, or procedure label. If you get 5578 the symbol type wrong your program will not link. */ 5579 5580 void 5581 bfd_som_set_symbol_type (asymbol *symbol, unsigned int type) 5582 { 5583 som_symbol_data (symbol)->som_type = type; 5584 } 5585 5586 /* Attach an auxiliary header to the BFD backend so that it may be 5587 written into the object file. */ 5588 5589 bfd_boolean 5590 bfd_som_attach_aux_hdr (bfd *abfd, int type, char *string) 5591 { 5592 bfd_size_type amt; 5593 5594 if (type == VERSION_AUX_ID) 5595 { 5596 size_t len = strlen (string); 5597 int pad = 0; 5598 5599 if (len % 4) 5600 pad = (4 - (len % 4)); 5601 amt = sizeof (struct som_string_auxhdr) + len + pad; 5602 obj_som_version_hdr (abfd) = bfd_zalloc (abfd, amt); 5603 if (!obj_som_version_hdr (abfd)) 5604 return FALSE; 5605 obj_som_version_hdr (abfd)->header_id.type = VERSION_AUX_ID; 5606 obj_som_version_hdr (abfd)->header_id.length = 4 + len + pad; 5607 obj_som_version_hdr (abfd)->string_length = len; 5608 memcpy (obj_som_version_hdr (abfd)->string, string, len); 5609 memset (obj_som_version_hdr (abfd)->string + len, 0, pad); 5610 } 5611 else if (type == COPYRIGHT_AUX_ID) 5612 { 5613 size_t len = strlen (string); 5614 int pad = 0; 5615 5616 if (len % 4) 5617 pad = (4 - (len % 4)); 5618 amt = sizeof (struct som_string_auxhdr) + len + pad; 5619 obj_som_copyright_hdr (abfd) = bfd_zalloc (abfd, amt); 5620 if (!obj_som_copyright_hdr (abfd)) 5621 return FALSE; 5622 obj_som_copyright_hdr (abfd)->header_id.type = COPYRIGHT_AUX_ID; 5623 obj_som_copyright_hdr (abfd)->header_id.length = len + pad + 4; 5624 obj_som_copyright_hdr (abfd)->string_length = len; 5625 memcpy (obj_som_copyright_hdr (abfd)->string, string, len); 5626 memset (obj_som_copyright_hdr (abfd)->string + len, 0, pad); 5627 } 5628 return TRUE; 5629 } 5630 5631 /* Attach a compilation unit header to the BFD backend so that it may be 5632 written into the object file. */ 5633 5634 bfd_boolean 5635 bfd_som_attach_compilation_unit (bfd *abfd, 5636 const char *name, 5637 const char *language_name, 5638 const char *product_id, 5639 const char *version_id) 5640 { 5641 struct som_compilation_unit *n; 5642 5643 n = (struct som_compilation_unit *) bfd_zalloc 5644 (abfd, (bfd_size_type) sizeof (*n)); 5645 if (n == NULL) 5646 return FALSE; 5647 5648 #define STRDUP(f) \ 5649 if (f != NULL) \ 5650 { \ 5651 n->f.name = bfd_alloc (abfd, (bfd_size_type) strlen (f) + 1); \ 5652 if (n->f.name == NULL) \ 5653 return FALSE; \ 5654 strcpy (n->f.name, f); \ 5655 } 5656 5657 STRDUP (name); 5658 STRDUP (language_name); 5659 STRDUP (product_id); 5660 STRDUP (version_id); 5661 5662 #undef STRDUP 5663 5664 obj_som_compilation_unit (abfd) = n; 5665 5666 return TRUE; 5667 } 5668 5669 static bfd_boolean 5670 som_get_section_contents (bfd *abfd, 5671 sec_ptr section, 5672 void *location, 5673 file_ptr offset, 5674 bfd_size_type count) 5675 { 5676 if (count == 0 || ((section->flags & SEC_HAS_CONTENTS) == 0)) 5677 return TRUE; 5678 if ((bfd_size_type) (offset+count) > section->size 5679 || bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0 5680 || bfd_bread (location, count, abfd) != count) 5681 return FALSE; /* On error. */ 5682 return TRUE; 5683 } 5684 5685 static bfd_boolean 5686 som_set_section_contents (bfd *abfd, 5687 sec_ptr section, 5688 const void *location, 5689 file_ptr offset, 5690 bfd_size_type count) 5691 { 5692 if (! abfd->output_has_begun) 5693 { 5694 /* Set up fixed parts of the file, space, and subspace headers. 5695 Notify the world that output has begun. */ 5696 som_prep_headers (abfd); 5697 abfd->output_has_begun = TRUE; 5698 /* Start writing the object file. This include all the string 5699 tables, fixup streams, and other portions of the object file. */ 5700 som_begin_writing (abfd); 5701 } 5702 5703 /* Only write subspaces which have "real" contents (eg. the contents 5704 are not generated at run time by the OS). */ 5705 if (!som_is_subspace (section) 5706 || ((section->flags & SEC_HAS_CONTENTS) == 0)) 5707 return TRUE; 5708 5709 /* Seek to the proper offset within the object file and write the 5710 data. */ 5711 offset += som_section_data (section)->subspace_dict->file_loc_init_value; 5712 if (bfd_seek (abfd, offset, SEEK_SET) != 0) 5713 return FALSE; 5714 5715 if (bfd_bwrite (location, count, abfd) != count) 5716 return FALSE; 5717 return TRUE; 5718 } 5719 5720 static bfd_boolean 5721 som_set_arch_mach (bfd *abfd, 5722 enum bfd_architecture arch, 5723 unsigned long machine) 5724 { 5725 /* Allow any architecture to be supported by the SOM backend. */ 5726 return bfd_default_set_arch_mach (abfd, arch, machine); 5727 } 5728 5729 static bfd_boolean 5730 som_find_nearest_line (bfd *abfd, 5731 asymbol **symbols, 5732 asection *section, 5733 bfd_vma offset, 5734 const char **filename_ptr, 5735 const char **functionname_ptr, 5736 unsigned int *line_ptr, 5737 unsigned int *discriminator_ptr) 5738 { 5739 bfd_boolean found; 5740 asymbol *func; 5741 bfd_vma low_func; 5742 asymbol **p; 5743 5744 if (discriminator_ptr) 5745 *discriminator_ptr = 0; 5746 5747 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, 5748 & found, filename_ptr, 5749 functionname_ptr, line_ptr, 5750 & somdata (abfd).line_info)) 5751 return FALSE; 5752 5753 if (found) 5754 return TRUE; 5755 5756 if (symbols == NULL) 5757 return FALSE; 5758 5759 /* Fallback: find function name from symbols table. */ 5760 func = NULL; 5761 low_func = 0; 5762 5763 for (p = symbols; *p != NULL; p++) 5764 { 5765 som_symbol_type *q = (som_symbol_type *) *p; 5766 5767 if (q->som_type == SYMBOL_TYPE_ENTRY 5768 && q->symbol.section == section 5769 && q->symbol.value >= low_func 5770 && q->symbol.value <= offset) 5771 { 5772 func = (asymbol *) q; 5773 low_func = q->symbol.value; 5774 } 5775 } 5776 5777 if (func == NULL) 5778 return FALSE; 5779 5780 *filename_ptr = NULL; 5781 *functionname_ptr = bfd_asymbol_name (func); 5782 *line_ptr = 0; 5783 5784 return TRUE; 5785 } 5786 5787 static int 5788 som_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, 5789 struct bfd_link_info *info ATTRIBUTE_UNUSED) 5790 { 5791 _bfd_error_handler (_("som_sizeof_headers unimplemented")); 5792 abort (); 5793 return 0; 5794 } 5795 5796 /* Return the single-character symbol type corresponding to 5797 SOM section S, or '?' for an unknown SOM section. */ 5798 5799 static char 5800 som_section_type (const char *s) 5801 { 5802 const struct section_to_type *t; 5803 5804 for (t = &stt[0]; t->section; t++) 5805 if (!strcmp (s, t->section)) 5806 return t->type; 5807 return '?'; 5808 } 5809 5810 static int 5811 som_decode_symclass (asymbol *symbol) 5812 { 5813 char c; 5814 5815 if (bfd_is_com_section (symbol->section)) 5816 return 'C'; 5817 if (bfd_is_und_section (symbol->section)) 5818 { 5819 if (symbol->flags & BSF_WEAK) 5820 { 5821 /* If weak, determine if it's specifically an object 5822 or non-object weak. */ 5823 if (symbol->flags & BSF_OBJECT) 5824 return 'v'; 5825 else 5826 return 'w'; 5827 } 5828 else 5829 return 'U'; 5830 } 5831 if (bfd_is_ind_section (symbol->section)) 5832 return 'I'; 5833 if (symbol->flags & BSF_WEAK) 5834 { 5835 /* If weak, determine if it's specifically an object 5836 or non-object weak. */ 5837 if (symbol->flags & BSF_OBJECT) 5838 return 'V'; 5839 else 5840 return 'W'; 5841 } 5842 if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL))) 5843 return '?'; 5844 5845 if (bfd_is_abs_section (symbol->section) 5846 || (som_symbol_data (symbol) != NULL 5847 && som_symbol_data (symbol)->som_type == SYMBOL_TYPE_ABSOLUTE)) 5848 c = 'a'; 5849 else if (symbol->section) 5850 c = som_section_type (symbol->section->name); 5851 else 5852 return '?'; 5853 if (symbol->flags & BSF_GLOBAL) 5854 c = TOUPPER (c); 5855 return c; 5856 } 5857 5858 /* Return information about SOM symbol SYMBOL in RET. */ 5859 5860 static void 5861 som_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED, 5862 asymbol *symbol, 5863 symbol_info *ret) 5864 { 5865 ret->type = som_decode_symclass (symbol); 5866 if (ret->type != 'U') 5867 ret->value = symbol->value + symbol->section->vma; 5868 else 5869 ret->value = 0; 5870 ret->name = symbol->name; 5871 } 5872 5873 /* Count the number of symbols in the archive symbol table. Necessary 5874 so that we can allocate space for all the carsyms at once. */ 5875 5876 static bfd_boolean 5877 som_bfd_count_ar_symbols (bfd *abfd, 5878 struct som_lst_header *lst_header, 5879 symindex *count) 5880 { 5881 unsigned int i; 5882 unsigned char *hash_table; 5883 bfd_size_type amt; 5884 file_ptr lst_filepos; 5885 5886 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header); 5887 5888 hash_table = bfd_malloc2 (lst_header->hash_size, 4); 5889 if (hash_table == NULL && lst_header->hash_size != 0) 5890 goto error_return; 5891 5892 /* Don't forget to initialize the counter! */ 5893 *count = 0; 5894 5895 /* Read in the hash table. The hash table is an array of 32-bit 5896 file offsets which point to the hash chains. */ 5897 amt = (bfd_size_type) lst_header->hash_size * 4; 5898 if (bfd_bread ((void *) hash_table, amt, abfd) != amt) 5899 goto error_return; 5900 5901 /* Walk each chain counting the number of symbols found on that particular 5902 chain. */ 5903 for (i = 0; i < lst_header->hash_size; i++) 5904 { 5905 struct som_external_lst_symbol_record ext_lst_symbol; 5906 unsigned int hash_val = bfd_getb32 (hash_table + 4 * i); 5907 5908 /* An empty chain has zero as it's file offset. */ 5909 if (hash_val == 0) 5910 continue; 5911 5912 /* Seek to the first symbol in this hash chain. */ 5913 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0) 5914 goto error_return; 5915 5916 /* Read in this symbol and update the counter. */ 5917 amt = sizeof (ext_lst_symbol); 5918 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt) 5919 goto error_return; 5920 5921 (*count)++; 5922 5923 /* Now iterate through the rest of the symbols on this chain. */ 5924 while (1) 5925 { 5926 unsigned int next_entry = bfd_getb32 (ext_lst_symbol.next_entry); 5927 5928 if (next_entry == 0) 5929 break; 5930 5931 /* Assume symbols on a chain are in increasing file offset 5932 order. Otherwise we can loop here with fuzzed input. */ 5933 if (next_entry < hash_val + sizeof (ext_lst_symbol)) 5934 { 5935 bfd_set_error (bfd_error_bad_value); 5936 goto error_return; 5937 } 5938 hash_val = next_entry; 5939 5940 /* Seek to the next symbol. */ 5941 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0) 5942 goto error_return; 5943 5944 /* Read the symbol in and update the counter. */ 5945 amt = sizeof (ext_lst_symbol); 5946 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt) 5947 goto error_return; 5948 5949 (*count)++; 5950 } 5951 } 5952 if (hash_table != NULL) 5953 free (hash_table); 5954 return TRUE; 5955 5956 error_return: 5957 if (hash_table != NULL) 5958 free (hash_table); 5959 return FALSE; 5960 } 5961 5962 /* Fill in the canonical archive symbols (SYMS) from the archive described 5963 by ABFD and LST_HEADER. */ 5964 5965 static bfd_boolean 5966 som_bfd_fill_in_ar_symbols (bfd *abfd, 5967 struct som_lst_header *lst_header, 5968 carsym **syms) 5969 { 5970 unsigned int i; 5971 carsym *set = syms[0]; 5972 unsigned char *hash_table; 5973 struct som_external_som_entry *som_dict = NULL; 5974 bfd_size_type amt; 5975 file_ptr lst_filepos; 5976 unsigned int string_loc; 5977 5978 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header); 5979 hash_table = bfd_malloc2 (lst_header->hash_size, 4); 5980 if (hash_table == NULL && lst_header->hash_size != 0) 5981 goto error_return; 5982 5983 /* Read in the hash table. The has table is an array of 32bit file offsets 5984 which point to the hash chains. */ 5985 amt = (bfd_size_type) lst_header->hash_size * 4; 5986 if (bfd_bread ((void *) hash_table, amt, abfd) != amt) 5987 goto error_return; 5988 5989 /* Seek to and read in the SOM dictionary. We will need this to fill 5990 in the carsym's filepos field. */ 5991 if (bfd_seek (abfd, lst_filepos + lst_header->dir_loc, SEEK_SET) != 0) 5992 goto error_return; 5993 5994 som_dict = bfd_malloc2 (lst_header->module_count, 5995 sizeof (struct som_external_som_entry)); 5996 if (som_dict == NULL && lst_header->module_count != 0) 5997 goto error_return; 5998 5999 amt = lst_header->module_count; 6000 amt *= sizeof (struct som_external_som_entry); 6001 if (bfd_bread ((void *) som_dict, amt, abfd) != amt) 6002 goto error_return; 6003 6004 string_loc = lst_header->string_loc; 6005 6006 /* Walk each chain filling in the carsyms as we go along. */ 6007 for (i = 0; i < lst_header->hash_size; i++) 6008 { 6009 struct som_external_lst_symbol_record lst_symbol; 6010 unsigned int hash_val; 6011 size_t len; 6012 unsigned char ext_len[4]; 6013 char *name; 6014 unsigned int ndx; 6015 6016 /* An empty chain has zero as it's file offset. */ 6017 hash_val = bfd_getb32 (hash_table + 4 * i); 6018 if (hash_val == 0) 6019 continue; 6020 6021 /* Seek to and read the first symbol on the chain. */ 6022 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0) 6023 goto error_return; 6024 6025 amt = sizeof (lst_symbol); 6026 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt) 6027 goto error_return; 6028 6029 /* Get the name of the symbol, first get the length which is stored 6030 as a 32bit integer just before the symbol. 6031 6032 One might ask why we don't just read in the entire string table 6033 and index into it. Well, according to the SOM ABI the string 6034 index can point *anywhere* in the archive to save space, so just 6035 using the string table would not be safe. */ 6036 if (bfd_seek (abfd, (lst_filepos + string_loc 6037 + bfd_getb32 (lst_symbol.name) - 4), SEEK_SET) != 0) 6038 goto error_return; 6039 6040 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4) 6041 goto error_return; 6042 len = bfd_getb32 (ext_len); 6043 6044 /* Allocate space for the name and null terminate it too. */ 6045 if (len == (size_t) -1) 6046 { 6047 bfd_set_error (bfd_error_no_memory); 6048 goto error_return; 6049 } 6050 name = bfd_zalloc (abfd, (bfd_size_type) len + 1); 6051 if (!name) 6052 goto error_return; 6053 if (bfd_bread (name, (bfd_size_type) len, abfd) != len) 6054 goto error_return; 6055 6056 name[len] = 0; 6057 set->name = name; 6058 6059 /* Fill in the file offset. Note that the "location" field points 6060 to the SOM itself, not the ar_hdr in front of it. */ 6061 ndx = bfd_getb32 (lst_symbol.som_index); 6062 if (ndx >= lst_header->module_count) 6063 { 6064 bfd_set_error (bfd_error_bad_value); 6065 goto error_return; 6066 } 6067 set->file_offset 6068 = bfd_getb32 (som_dict[ndx].location) - sizeof (struct ar_hdr); 6069 6070 /* Go to the next symbol. */ 6071 set++; 6072 6073 /* Iterate through the rest of the chain. */ 6074 while (1) 6075 { 6076 unsigned int next_entry = bfd_getb32 (lst_symbol.next_entry); 6077 6078 if (next_entry == 0) 6079 break; 6080 6081 /* Seek to the next symbol and read it in. */ 6082 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0) 6083 goto error_return; 6084 6085 amt = sizeof (lst_symbol); 6086 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt) 6087 goto error_return; 6088 6089 /* Seek to the name length & string and read them in. */ 6090 if (bfd_seek (abfd, lst_filepos + string_loc 6091 + bfd_getb32 (lst_symbol.name) - 4, SEEK_SET) != 0) 6092 goto error_return; 6093 6094 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4) 6095 goto error_return; 6096 len = bfd_getb32 (ext_len); 6097 6098 /* Allocate space for the name and null terminate it too. */ 6099 if (len == (size_t) -1) 6100 { 6101 bfd_set_error (bfd_error_no_memory); 6102 goto error_return; 6103 } 6104 name = bfd_zalloc (abfd, (bfd_size_type) len + 1); 6105 if (!name) 6106 goto error_return; 6107 6108 if (bfd_bread (name, (bfd_size_type) len, abfd) != len) 6109 goto error_return; 6110 name[len] = 0; 6111 set->name = name; 6112 6113 /* Fill in the file offset. Note that the "location" field points 6114 to the SOM itself, not the ar_hdr in front of it. */ 6115 ndx = bfd_getb32 (lst_symbol.som_index); 6116 if (ndx >= lst_header->module_count) 6117 { 6118 bfd_set_error (bfd_error_bad_value); 6119 goto error_return; 6120 } 6121 set->file_offset 6122 = bfd_getb32 (som_dict[ndx].location) - sizeof (struct ar_hdr); 6123 6124 /* Go on to the next symbol. */ 6125 set++; 6126 } 6127 } 6128 /* If we haven't died by now, then we successfully read the entire 6129 archive symbol table. */ 6130 if (hash_table != NULL) 6131 free (hash_table); 6132 if (som_dict != NULL) 6133 free (som_dict); 6134 return TRUE; 6135 6136 error_return: 6137 if (hash_table != NULL) 6138 free (hash_table); 6139 if (som_dict != NULL) 6140 free (som_dict); 6141 return FALSE; 6142 } 6143 6144 /* Read in the LST from the archive. */ 6145 6146 static bfd_boolean 6147 som_slurp_armap (bfd *abfd) 6148 { 6149 struct som_external_lst_header ext_lst_header; 6150 struct som_lst_header lst_header; 6151 struct ar_hdr ar_header; 6152 unsigned int parsed_size; 6153 struct artdata *ardata = bfd_ardata (abfd); 6154 char nextname[17]; 6155 bfd_size_type amt = 16; 6156 int i = bfd_bread ((void *) nextname, amt, abfd); 6157 6158 /* Special cases. */ 6159 if (i == 0) 6160 return TRUE; 6161 if (i != 16) 6162 return FALSE; 6163 6164 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) 6165 return FALSE; 6166 6167 /* For archives without .o files there is no symbol table. */ 6168 if (! CONST_STRNEQ (nextname, "/ ")) 6169 { 6170 abfd->has_armap = FALSE; 6171 return TRUE; 6172 } 6173 6174 /* Read in and sanity check the archive header. */ 6175 amt = sizeof (struct ar_hdr); 6176 if (bfd_bread ((void *) &ar_header, amt, abfd) != amt) 6177 return FALSE; 6178 6179 if (strncmp (ar_header.ar_fmag, ARFMAG, 2)) 6180 { 6181 bfd_set_error (bfd_error_malformed_archive); 6182 return FALSE; 6183 } 6184 6185 /* How big is the archive symbol table entry? */ 6186 errno = 0; 6187 parsed_size = strtol (ar_header.ar_size, NULL, 10); 6188 if (errno != 0) 6189 { 6190 bfd_set_error (bfd_error_malformed_archive); 6191 return FALSE; 6192 } 6193 6194 /* Save off the file offset of the first real user data. */ 6195 ardata->first_file_filepos = bfd_tell (abfd) + parsed_size; 6196 6197 /* Read in the library symbol table. We'll make heavy use of this 6198 in just a minute. */ 6199 amt = sizeof (struct som_external_lst_header); 6200 if (bfd_bread ((void *) &ext_lst_header, amt, abfd) != amt) 6201 return FALSE; 6202 6203 som_swap_lst_header_in (&ext_lst_header, &lst_header); 6204 6205 /* Sanity check. */ 6206 if (lst_header.a_magic != LIBMAGIC) 6207 { 6208 bfd_set_error (bfd_error_malformed_archive); 6209 return FALSE; 6210 } 6211 6212 /* Count the number of symbols in the library symbol table. */ 6213 if (! som_bfd_count_ar_symbols (abfd, &lst_header, &ardata->symdef_count)) 6214 return FALSE; 6215 6216 /* Get back to the start of the library symbol table. */ 6217 if (bfd_seek (abfd, (ardata->first_file_filepos - parsed_size 6218 + sizeof (struct som_external_lst_header)), 6219 SEEK_SET) != 0) 6220 return FALSE; 6221 6222 /* Initialize the cache and allocate space for the library symbols. */ 6223 ardata->cache = 0; 6224 ardata->symdefs = bfd_alloc2 (abfd, ardata->symdef_count, sizeof (carsym)); 6225 if (!ardata->symdefs) 6226 return FALSE; 6227 6228 /* Now fill in the canonical archive symbols. */ 6229 if (! som_bfd_fill_in_ar_symbols (abfd, &lst_header, &ardata->symdefs)) 6230 return FALSE; 6231 6232 /* Seek back to the "first" file in the archive. Note the "first" 6233 file may be the extended name table. */ 6234 if (bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET) != 0) 6235 return FALSE; 6236 6237 /* Notify the generic archive code that we have a symbol map. */ 6238 abfd->has_armap = TRUE; 6239 return TRUE; 6240 } 6241 6242 /* Begin preparing to write a SOM library symbol table. 6243 6244 As part of the prep work we need to determine the number of symbols 6245 and the size of the associated string section. */ 6246 6247 static bfd_boolean 6248 som_bfd_prep_for_ar_write (bfd *abfd, 6249 unsigned int *num_syms, 6250 unsigned int *stringsize) 6251 { 6252 bfd *curr_bfd = abfd->archive_head; 6253 6254 /* Some initialization. */ 6255 *num_syms = 0; 6256 *stringsize = 0; 6257 6258 /* Iterate over each BFD within this archive. */ 6259 while (curr_bfd != NULL) 6260 { 6261 unsigned int curr_count, i; 6262 som_symbol_type *sym; 6263 6264 /* Don't bother for non-SOM objects. */ 6265 if (curr_bfd->format != bfd_object 6266 || curr_bfd->xvec->flavour != bfd_target_som_flavour) 6267 { 6268 curr_bfd = curr_bfd->archive_next; 6269 continue; 6270 } 6271 6272 /* Make sure the symbol table has been read, then snag a pointer 6273 to it. It's a little slimey to grab the symbols via obj_som_symtab, 6274 but doing so avoids allocating lots of extra memory. */ 6275 if (! som_slurp_symbol_table (curr_bfd)) 6276 return FALSE; 6277 6278 sym = obj_som_symtab (curr_bfd); 6279 curr_count = bfd_get_symcount (curr_bfd); 6280 6281 /* Examine each symbol to determine if it belongs in the 6282 library symbol table. */ 6283 for (i = 0; i < curr_count; i++, sym++) 6284 { 6285 struct som_misc_symbol_info info; 6286 6287 /* Derive SOM information from the BFD symbol. */ 6288 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info); 6289 6290 /* Should we include this symbol? */ 6291 if (info.symbol_type == ST_NULL 6292 || info.symbol_type == ST_SYM_EXT 6293 || info.symbol_type == ST_ARG_EXT) 6294 continue; 6295 6296 /* Only global symbols and unsatisfied commons. */ 6297 if (info.symbol_scope != SS_UNIVERSAL 6298 && info.symbol_type != ST_STORAGE) 6299 continue; 6300 6301 /* Do no include undefined symbols. */ 6302 if (bfd_is_und_section (sym->symbol.section)) 6303 continue; 6304 6305 /* Bump the various counters, being careful to honor 6306 alignment considerations in the string table. */ 6307 (*num_syms)++; 6308 *stringsize += strlen (sym->symbol.name) + 5; 6309 while (*stringsize % 4) 6310 (*stringsize)++; 6311 } 6312 6313 curr_bfd = curr_bfd->archive_next; 6314 } 6315 return TRUE; 6316 } 6317 6318 /* Hash a symbol name based on the hashing algorithm presented in the 6319 SOM ABI. */ 6320 6321 static unsigned int 6322 som_bfd_ar_symbol_hash (asymbol *symbol) 6323 { 6324 unsigned int len = strlen (symbol->name); 6325 6326 /* Names with length 1 are special. */ 6327 if (len == 1) 6328 return 0x1000100 | (symbol->name[0] << 16) | symbol->name[0]; 6329 6330 return ((len & 0x7f) << 24) | (symbol->name[1] << 16) 6331 | (symbol->name[len - 2] << 8) | symbol->name[len - 1]; 6332 } 6333 6334 /* Do the bulk of the work required to write the SOM library 6335 symbol table. */ 6336 6337 static bfd_boolean 6338 som_bfd_ar_write_symbol_stuff (bfd *abfd, 6339 unsigned int nsyms, 6340 unsigned int string_size, 6341 struct som_external_lst_header lst, 6342 unsigned elength) 6343 { 6344 char *strings = NULL, *p; 6345 struct som_external_lst_symbol_record *lst_syms = NULL, *curr_lst_sym; 6346 bfd *curr_bfd; 6347 unsigned char *hash_table = NULL; 6348 struct som_external_som_entry *som_dict = NULL; 6349 struct som_external_lst_symbol_record **last_hash_entry = NULL; 6350 unsigned int curr_som_offset, som_index = 0; 6351 bfd_size_type amt; 6352 unsigned int module_count; 6353 unsigned int hash_size; 6354 6355 hash_size = bfd_getb32 (lst.hash_size); 6356 hash_table = bfd_zmalloc2 (hash_size, 4); 6357 if (hash_table == NULL && hash_size != 0) 6358 goto error_return; 6359 6360 module_count = bfd_getb32 (lst.module_count); 6361 som_dict = bfd_zmalloc2 (module_count, sizeof (struct som_external_som_entry)); 6362 if (som_dict == NULL && module_count != 0) 6363 goto error_return; 6364 6365 last_hash_entry 6366 = bfd_zmalloc2 (hash_size, sizeof (struct som_external_lst_symbol_record *)); 6367 if (last_hash_entry == NULL && hash_size != 0) 6368 goto error_return; 6369 6370 /* Symbols have som_index fields, so we have to keep track of the 6371 index of each SOM in the archive. 6372 6373 The SOM dictionary has (among other things) the absolute file 6374 position for the SOM which a particular dictionary entry 6375 describes. We have to compute that information as we iterate 6376 through the SOMs/symbols. */ 6377 som_index = 0; 6378 6379 /* We add in the size of the archive header twice as the location 6380 in the SOM dictionary is the actual offset of the SOM, not the 6381 archive header before the SOM. */ 6382 curr_som_offset = 8 + 2 * sizeof (struct ar_hdr) + bfd_getb32 (lst.file_end); 6383 6384 /* Make room for the archive header and the contents of the 6385 extended string table. Note that elength includes the size 6386 of the archive header for the extended name table! */ 6387 if (elength) 6388 curr_som_offset += elength; 6389 6390 /* Make sure we're properly aligned. */ 6391 curr_som_offset = (curr_som_offset + 0x1) & ~0x1; 6392 6393 /* FIXME should be done with buffers just like everything else... */ 6394 lst_syms = bfd_malloc2 (nsyms, sizeof (struct som_external_lst_symbol_record)); 6395 if (lst_syms == NULL && nsyms != 0) 6396 goto error_return; 6397 strings = bfd_malloc ((bfd_size_type) string_size); 6398 if (strings == NULL && string_size != 0) 6399 goto error_return; 6400 6401 p = strings; 6402 curr_lst_sym = lst_syms; 6403 6404 curr_bfd = abfd->archive_head; 6405 while (curr_bfd != NULL) 6406 { 6407 unsigned int curr_count, i; 6408 som_symbol_type *sym; 6409 6410 /* Don't bother for non-SOM objects. */ 6411 if (curr_bfd->format != bfd_object 6412 || curr_bfd->xvec->flavour != bfd_target_som_flavour) 6413 { 6414 curr_bfd = curr_bfd->archive_next; 6415 continue; 6416 } 6417 6418 /* Make sure the symbol table has been read, then snag a pointer 6419 to it. It's a little slimey to grab the symbols via obj_som_symtab, 6420 but doing so avoids allocating lots of extra memory. */ 6421 if (! som_slurp_symbol_table (curr_bfd)) 6422 goto error_return; 6423 6424 sym = obj_som_symtab (curr_bfd); 6425 curr_count = bfd_get_symcount (curr_bfd); 6426 6427 for (i = 0; i < curr_count; i++, sym++) 6428 { 6429 struct som_misc_symbol_info info; 6430 struct som_external_lst_symbol_record *last; 6431 unsigned int symbol_pos; 6432 unsigned int slen; 6433 unsigned int symbol_key; 6434 unsigned int flags; 6435 6436 /* Derive SOM information from the BFD symbol. */ 6437 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info); 6438 6439 /* Should we include this symbol? */ 6440 if (info.symbol_type == ST_NULL 6441 || info.symbol_type == ST_SYM_EXT 6442 || info.symbol_type == ST_ARG_EXT) 6443 continue; 6444 6445 /* Only global symbols and unsatisfied commons. */ 6446 if (info.symbol_scope != SS_UNIVERSAL 6447 && info.symbol_type != ST_STORAGE) 6448 continue; 6449 6450 /* Do no include undefined symbols. */ 6451 if (bfd_is_und_section (sym->symbol.section)) 6452 continue; 6453 6454 /* If this is the first symbol from this SOM, then update 6455 the SOM dictionary too. */ 6456 if (bfd_getb32 (som_dict[som_index].location) == 0) 6457 { 6458 bfd_putb32 (curr_som_offset, som_dict[som_index].location); 6459 bfd_putb32 (arelt_size (curr_bfd), som_dict[som_index].length); 6460 } 6461 6462 symbol_key = som_bfd_ar_symbol_hash (&sym->symbol); 6463 6464 /* Fill in the lst symbol record. */ 6465 flags = 0; 6466 if (info.secondary_def) 6467 flags |= LST_SYMBOL_SECONDARY_DEF; 6468 flags |= info.symbol_type << LST_SYMBOL_SYMBOL_TYPE_SH; 6469 flags |= info.symbol_scope << LST_SYMBOL_SYMBOL_SCOPE_SH; 6470 if (bfd_is_com_section (sym->symbol.section)) 6471 flags |= LST_SYMBOL_IS_COMMON; 6472 if (info.dup_common) 6473 flags |= LST_SYMBOL_DUP_COMMON; 6474 flags |= 3 << LST_SYMBOL_XLEAST_SH; 6475 flags |= info.arg_reloc << LST_SYMBOL_ARG_RELOC_SH; 6476 bfd_putb32 (flags, curr_lst_sym->flags); 6477 bfd_putb32 (p - strings + 4, curr_lst_sym->name); 6478 bfd_putb32 (0, curr_lst_sym->qualifier_name); 6479 bfd_putb32 (info.symbol_info, curr_lst_sym->symbol_info); 6480 bfd_putb32 (info.symbol_value | info.priv_level, 6481 curr_lst_sym->symbol_value); 6482 bfd_putb32 (0, curr_lst_sym->symbol_descriptor); 6483 curr_lst_sym->reserved = 0; 6484 bfd_putb32 (som_index, curr_lst_sym->som_index); 6485 bfd_putb32 (symbol_key, curr_lst_sym->symbol_key); 6486 bfd_putb32 (0, curr_lst_sym->next_entry); 6487 6488 /* Insert into the hash table. */ 6489 symbol_pos = 6490 (curr_lst_sym - lst_syms) 6491 * sizeof (struct som_external_lst_symbol_record) 6492 + hash_size * 4 6493 + module_count * sizeof (struct som_external_som_entry) 6494 + sizeof (struct som_external_lst_header); 6495 last = last_hash_entry[symbol_key % hash_size]; 6496 if (last != NULL) 6497 { 6498 /* There is already something at the head of this hash chain, 6499 so tack this symbol onto the end of the chain. */ 6500 bfd_putb32 (symbol_pos, last->next_entry); 6501 } 6502 else 6503 /* First entry in this hash chain. */ 6504 bfd_putb32 (symbol_pos, hash_table + 4 * (symbol_key % hash_size)); 6505 6506 /* Keep track of the last symbol we added to this chain so we can 6507 easily update its next_entry pointer. */ 6508 last_hash_entry[symbol_key % hash_size] = curr_lst_sym; 6509 6510 /* Update the string table. */ 6511 slen = strlen (sym->symbol.name); 6512 bfd_put_32 (abfd, slen, p); 6513 p += 4; 6514 slen++; /* Nul terminator. */ 6515 memcpy (p, sym->symbol.name, slen); 6516 p += slen; 6517 while (slen % 4) 6518 { 6519 bfd_put_8 (abfd, 0, p); 6520 p++; 6521 slen++; 6522 } 6523 BFD_ASSERT (p <= strings + string_size); 6524 6525 /* Head to the next symbol. */ 6526 curr_lst_sym++; 6527 } 6528 6529 /* Keep track of where each SOM will finally reside; then look 6530 at the next BFD. */ 6531 curr_som_offset += arelt_size (curr_bfd) + sizeof (struct ar_hdr); 6532 6533 /* A particular object in the archive may have an odd length; the 6534 linker requires objects begin on an even boundary. So round 6535 up the current offset as necessary. */ 6536 curr_som_offset = (curr_som_offset + 0x1) &~ (unsigned) 1; 6537 curr_bfd = curr_bfd->archive_next; 6538 som_index++; 6539 } 6540 6541 /* Now scribble out the hash table. */ 6542 amt = (bfd_size_type) hash_size * 4; 6543 if (bfd_bwrite ((void *) hash_table, amt, abfd) != amt) 6544 goto error_return; 6545 6546 /* Then the SOM dictionary. */ 6547 amt = (bfd_size_type) module_count * sizeof (struct som_external_som_entry); 6548 if (bfd_bwrite ((void *) som_dict, amt, abfd) != amt) 6549 goto error_return; 6550 6551 /* The library symbols. */ 6552 amt = (bfd_size_type) nsyms * sizeof (struct som_external_lst_symbol_record); 6553 if (bfd_bwrite ((void *) lst_syms, amt, abfd) != amt) 6554 goto error_return; 6555 6556 /* And finally the strings. */ 6557 amt = string_size; 6558 if (bfd_bwrite ((void *) strings, amt, abfd) != amt) 6559 goto error_return; 6560 6561 if (hash_table != NULL) 6562 free (hash_table); 6563 if (som_dict != NULL) 6564 free (som_dict); 6565 if (last_hash_entry != NULL) 6566 free (last_hash_entry); 6567 if (lst_syms != NULL) 6568 free (lst_syms); 6569 if (strings != NULL) 6570 free (strings); 6571 return TRUE; 6572 6573 error_return: 6574 if (hash_table != NULL) 6575 free (hash_table); 6576 if (som_dict != NULL) 6577 free (som_dict); 6578 if (last_hash_entry != NULL) 6579 free (last_hash_entry); 6580 if (lst_syms != NULL) 6581 free (lst_syms); 6582 if (strings != NULL) 6583 free (strings); 6584 6585 return FALSE; 6586 } 6587 6588 /* Write out the LST for the archive. 6589 6590 You'll never believe this is really how armaps are handled in SOM... */ 6591 6592 static bfd_boolean 6593 som_write_armap (bfd *abfd, 6594 unsigned int elength, 6595 struct orl *map ATTRIBUTE_UNUSED, 6596 unsigned int orl_count ATTRIBUTE_UNUSED, 6597 int stridx ATTRIBUTE_UNUSED) 6598 { 6599 bfd *curr_bfd; 6600 struct stat statbuf; 6601 unsigned int i, lst_size, nsyms, stringsize; 6602 struct ar_hdr hdr; 6603 struct som_external_lst_header lst; 6604 unsigned char *p; 6605 bfd_size_type amt; 6606 unsigned int csum; 6607 unsigned int module_count; 6608 6609 /* We'll use this for the archive's date and mode later. */ 6610 if (stat (abfd->filename, &statbuf) != 0) 6611 { 6612 bfd_set_error (bfd_error_system_call); 6613 return FALSE; 6614 } 6615 /* Fudge factor. */ 6616 bfd_ardata (abfd)->armap_timestamp = statbuf.st_mtime + 60; 6617 6618 /* Account for the lst header first. */ 6619 lst_size = sizeof (struct som_external_lst_header); 6620 6621 /* Start building the LST header. */ 6622 /* FIXME: Do we need to examine each element to determine the 6623 largest id number? */ 6624 bfd_putb16 (CPU_PA_RISC1_0, &lst.system_id); 6625 bfd_putb16 (LIBMAGIC, &lst.a_magic); 6626 bfd_putb32 (VERSION_ID, &lst.version_id); 6627 bfd_putb32 (0, &lst.file_time.secs); 6628 bfd_putb32 (0, &lst.file_time.nanosecs); 6629 6630 bfd_putb32 (lst_size, &lst.hash_loc); 6631 bfd_putb32 (SOM_LST_HASH_SIZE, &lst.hash_size); 6632 6633 /* Hash table is a SOM_LST_HASH_SIZE 32bit offsets. */ 6634 lst_size += 4 * SOM_LST_HASH_SIZE; 6635 6636 /* We need to count the number of SOMs in this archive. */ 6637 curr_bfd = abfd->archive_head; 6638 module_count = 0; 6639 while (curr_bfd != NULL) 6640 { 6641 /* Only true SOM objects count. */ 6642 if (curr_bfd->format == bfd_object 6643 && curr_bfd->xvec->flavour == bfd_target_som_flavour) 6644 module_count++; 6645 curr_bfd = curr_bfd->archive_next; 6646 } 6647 bfd_putb32 (module_count, &lst.module_count); 6648 bfd_putb32 (module_count, &lst.module_limit); 6649 bfd_putb32 (lst_size, &lst.dir_loc); 6650 lst_size += sizeof (struct som_external_som_entry) * module_count; 6651 6652 /* We don't support import/export tables, auxiliary headers, 6653 or free lists yet. Make the linker work a little harder 6654 to make our life easier. */ 6655 6656 bfd_putb32 (0, &lst.export_loc); 6657 bfd_putb32 (0, &lst.export_count); 6658 bfd_putb32 (0, &lst.import_loc); 6659 bfd_putb32 (0, &lst.aux_loc); 6660 bfd_putb32 (0, &lst.aux_size); 6661 6662 /* Count how many symbols we will have on the hash chains and the 6663 size of the associated string table. */ 6664 if (! som_bfd_prep_for_ar_write (abfd, &nsyms, &stringsize)) 6665 return FALSE; 6666 6667 lst_size += sizeof (struct som_external_lst_symbol_record) * nsyms; 6668 6669 /* For the string table. One day we might actually use this info 6670 to avoid small seeks/reads when reading archives. */ 6671 bfd_putb32 (lst_size, &lst.string_loc); 6672 bfd_putb32 (stringsize, &lst.string_size); 6673 lst_size += stringsize; 6674 6675 /* SOM ABI says this must be zero. */ 6676 bfd_putb32 (0, &lst.free_list); 6677 bfd_putb32 (lst_size, &lst.file_end); 6678 6679 /* Compute the checksum. Must happen after the entire lst header 6680 has filled in. */ 6681 p = (unsigned char *) &lst; 6682 csum = 0; 6683 for (i = 0; i < sizeof (struct som_external_lst_header) - sizeof (int); 6684 i += 4) 6685 csum ^= bfd_getb32 (&p[i]); 6686 bfd_putb32 (csum, &lst.checksum); 6687 6688 sprintf (hdr.ar_name, "/ "); 6689 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%-12ld", 6690 bfd_ardata (abfd)->armap_timestamp); 6691 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 6692 statbuf.st_uid); 6693 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 6694 statbuf.st_gid); 6695 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-8o", 6696 (unsigned int)statbuf.st_mode); 6697 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10d", 6698 (int) lst_size); 6699 hdr.ar_fmag[0] = '`'; 6700 hdr.ar_fmag[1] = '\012'; 6701 6702 /* Turn any nulls into spaces. */ 6703 for (i = 0; i < sizeof (struct ar_hdr); i++) 6704 if (((char *) (&hdr))[i] == '\0') 6705 (((char *) (&hdr))[i]) = ' '; 6706 6707 /* Scribble out the ar header. */ 6708 amt = sizeof (struct ar_hdr); 6709 if (bfd_bwrite ((void *) &hdr, amt, abfd) != amt) 6710 return FALSE; 6711 6712 /* Now scribble out the lst header. */ 6713 amt = sizeof (struct som_external_lst_header); 6714 if (bfd_bwrite ((void *) &lst, amt, abfd) != amt) 6715 return FALSE; 6716 6717 /* Build and write the armap. */ 6718 if (!som_bfd_ar_write_symbol_stuff (abfd, nsyms, stringsize, lst, elength)) 6719 return FALSE; 6720 6721 /* Done. */ 6722 return TRUE; 6723 } 6724 6725 /* Free all information we have cached for this BFD. We can always 6726 read it again later if we need it. */ 6727 6728 static bfd_boolean 6729 som_bfd_free_cached_info (bfd *abfd) 6730 { 6731 if (bfd_get_format (abfd) == bfd_object) 6732 { 6733 asection *o; 6734 6735 #define FREE(x) if (x != NULL) { free (x); x = NULL; } 6736 /* Free the native string and symbol tables. */ 6737 FREE (obj_som_symtab (abfd)); 6738 FREE (obj_som_stringtab (abfd)); 6739 for (o = abfd->sections; o != NULL; o = o->next) 6740 { 6741 /* Free the native relocations. */ 6742 o->reloc_count = (unsigned) -1; 6743 FREE (som_section_data (o)->reloc_stream); 6744 /* Do not free the generic relocations as they are objalloc'ed. */ 6745 } 6746 #undef FREE 6747 } 6748 6749 return _bfd_generic_close_and_cleanup (abfd); 6750 } 6751 6752 /* End of miscellaneous support functions. */ 6753 6754 /* Linker support functions. */ 6755 6756 static bfd_boolean 6757 som_bfd_link_split_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) 6758 { 6759 return som_is_subspace (sec) && sec->size > 240000; 6760 } 6761 6762 #define som_find_line _bfd_nosymbols_find_line 6763 #define som_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string 6764 #define som_close_and_cleanup som_bfd_free_cached_info 6765 #define som_read_ar_hdr _bfd_generic_read_ar_hdr 6766 #define som_write_ar_hdr _bfd_generic_write_ar_hdr 6767 #define som_openr_next_archived_file bfd_generic_openr_next_archived_file 6768 #define som_get_elt_at_index _bfd_generic_get_elt_at_index 6769 #define som_generic_stat_arch_elt bfd_generic_stat_arch_elt 6770 #define som_truncate_arname bfd_bsd_truncate_arname 6771 #define som_slurp_extended_name_table _bfd_slurp_extended_name_table 6772 #define som_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table 6773 #define som_update_armap_timestamp _bfd_bool_bfd_true 6774 #define som_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false 6775 #define som_get_lineno _bfd_nosymbols_get_lineno 6776 #define som_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol 6777 #define som_read_minisymbols _bfd_generic_read_minisymbols 6778 #define som_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol 6779 #define som_get_section_contents_in_window _bfd_generic_get_section_contents_in_window 6780 #define som_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents 6781 #define som_bfd_relax_section bfd_generic_relax_section 6782 #define som_bfd_link_hash_table_create _bfd_generic_link_hash_table_create 6783 #define som_bfd_link_add_symbols _bfd_generic_link_add_symbols 6784 #define som_bfd_link_just_syms _bfd_generic_link_just_syms 6785 #define som_bfd_copy_link_hash_symbol_type \ 6786 _bfd_generic_copy_link_hash_symbol_type 6787 #define som_bfd_final_link _bfd_generic_final_link 6788 #define som_bfd_gc_sections bfd_generic_gc_sections 6789 #define som_bfd_lookup_section_flags bfd_generic_lookup_section_flags 6790 #define som_bfd_merge_sections bfd_generic_merge_sections 6791 #define som_bfd_is_group_section bfd_generic_is_group_section 6792 #define som_bfd_group_name bfd_generic_group_name 6793 #define som_bfd_discard_group bfd_generic_discard_group 6794 #define som_section_already_linked _bfd_generic_section_already_linked 6795 #define som_bfd_define_common_symbol bfd_generic_define_common_symbol 6796 #define som_bfd_link_hide_symbol _bfd_generic_link_hide_symbol 6797 #define som_bfd_define_start_stop bfd_generic_define_start_stop 6798 #define som_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data 6799 #define som_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data 6800 #define som_bfd_set_private_flags _bfd_generic_bfd_set_private_flags 6801 #define som_find_inliner_info _bfd_nosymbols_find_inliner_info 6802 #define som_bfd_link_check_relocs _bfd_generic_link_check_relocs 6803 #define som_set_reloc _bfd_generic_set_reloc 6804 6805 const bfd_target hppa_som_vec = 6806 { 6807 "som", /* Name. */ 6808 bfd_target_som_flavour, 6809 BFD_ENDIAN_BIG, /* Target byte order. */ 6810 BFD_ENDIAN_BIG, /* Target headers byte order. */ 6811 (HAS_RELOC | EXEC_P | /* Object flags. */ 6812 HAS_LINENO | HAS_DEBUG | 6813 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | DYNAMIC), 6814 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | SEC_LINK_ONCE 6815 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ 6816 6817 /* Leading_symbol_char: is the first char of a user symbol 6818 predictable, and if so what is it. */ 6819 0, 6820 '/', /* AR_pad_char. */ 6821 14, /* AR_max_namelen. */ 6822 0, /* match priority. */ 6823 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 6824 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 6825 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ 6826 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 6827 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 6828 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ 6829 {_bfd_dummy_target, 6830 som_object_p, /* bfd_check_format. */ 6831 bfd_generic_archive_p, 6832 _bfd_dummy_target 6833 }, 6834 { 6835 _bfd_bool_bfd_false_error, 6836 som_mkobject, 6837 _bfd_generic_mkarchive, 6838 _bfd_bool_bfd_false_error 6839 }, 6840 { 6841 _bfd_bool_bfd_false_error, 6842 som_write_object_contents, 6843 _bfd_write_archive_contents, 6844 _bfd_bool_bfd_false_error, 6845 }, 6846 #undef som 6847 6848 BFD_JUMP_TABLE_GENERIC (som), 6849 BFD_JUMP_TABLE_COPY (som), 6850 BFD_JUMP_TABLE_CORE (_bfd_nocore), 6851 BFD_JUMP_TABLE_ARCHIVE (som), 6852 BFD_JUMP_TABLE_SYMBOLS (som), 6853 BFD_JUMP_TABLE_RELOCS (som), 6854 BFD_JUMP_TABLE_WRITE (som), 6855 BFD_JUMP_TABLE_LINK (som), 6856 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 6857 6858 NULL, 6859 6860 NULL 6861 }; 6862 6863