1 /* tc-msp430.c -- Assembler code for the Texas Instruments MSP430 2 3 Copyright (C) 2002-2020 Free Software Foundation, Inc. 4 Contributed by Dmitry Diky <diwil@mail.ru> 5 6 This file is part of GAS, the GNU Assembler. 7 8 GAS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3, or (at your option) 11 any later version. 12 13 GAS is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GAS; see the file COPYING. If not, write to 20 the Free Software Foundation, 51 Franklin Street - Fifth Floor, 21 Boston, MA 02110-1301, USA. */ 22 23 #include "as.h" 24 #include <limits.h> 25 #include "subsegs.h" 26 #include "opcode/msp430.h" 27 #include "safe-ctype.h" 28 #include "dwarf2dbg.h" 29 #include "elf/msp430.h" 30 #include "libiberty.h" 31 32 /* We will disable polymorphs by default because it is dangerous. 33 The potential problem here is the following: assume we got the 34 following code: 35 36 jump .l1 37 nop 38 jump subroutine ; external symbol 39 .l1: 40 nop 41 ret 42 43 In case of assembly time relaxation we'll get: 44 0: jmp .l1 <.text +0x08> (reloc deleted) 45 2: nop 46 4: br subroutine 47 .l1: 48 8: nop 49 10: ret 50 51 If the 'subroutine' is within +-1024 bytes range then linker 52 will produce: 53 0: jmp .text +0x08 54 2: nop 55 4: jmp subroutine 56 .l1: 57 6: nop 58 8: ret ; 'jmp .text +0x08' will land here. WRONG!!! 59 60 The workaround is the following: 61 1. Declare global var enable_polymorphs which set to 1 via option -mp. 62 2. Declare global var enable_relax which set to 1 via option -mQ. 63 64 If polymorphs are enabled, and relax isn't, treat all jumps as long jumps, 65 do not delete any relocs and leave them for linker. 66 67 If relax is enabled, relax at assembly time and kill relocs as necessary. */ 68 69 int msp430_enable_relax; 70 int msp430_enable_polys; 71 72 /* GCC uses the some condition codes which we'll 73 implement as new polymorph instructions. 74 75 COND EXPL SHORT JUMP LONG JUMP 76 =============================================== 77 eq == jeq jne +4; br lab 78 ne != jne jeq +4; br lab 79 80 ltn honours no-overflow flag 81 ltn < jn jn +2; jmp +4; br lab 82 83 lt < jl jge +4; br lab 84 ltu < jlo lhs +4; br lab 85 le <= see below 86 leu <= see below 87 88 gt > see below 89 gtu > see below 90 ge >= jge jl +4; br lab 91 geu >= jhs jlo +4; br lab 92 =============================================== 93 94 Therefore, new opcodes are (BranchEQ -> beq; and so on...) 95 beq,bne,blt,bltn,bltu,bge,bgeu 96 'u' means unsigned compares 97 98 Also, we add 'jump' instruction: 99 jump UNCOND -> jmp br lab 100 101 They will have fmt == 4, and insn_opnumb == number of instruction. */ 102 103 struct rcodes_s 104 { 105 const char * name; 106 int index; /* Corresponding insn_opnumb. */ 107 int sop; /* Opcode if jump length is short. */ 108 long lpos; /* Label position. */ 109 long lop0; /* Opcode 1 _word_ (16 bits). */ 110 long lop1; /* Opcode second word. */ 111 long lop2; /* Opcode third word. */ 112 }; 113 114 #define MSP430_RLC(n,i,sop,o1) \ 115 {#n, i, sop, 2, (o1 + 2), 0x4010, 0} 116 117 static struct rcodes_s msp430_rcodes[] = 118 { 119 MSP430_RLC (beq, 0, 0x2400, 0x2000), 120 MSP430_RLC (bne, 1, 0x2000, 0x2400), 121 MSP430_RLC (blt, 2, 0x3800, 0x3400), 122 MSP430_RLC (bltu, 3, 0x2800, 0x2c00), 123 MSP430_RLC (bge, 4, 0x3400, 0x3800), 124 MSP430_RLC (bgeu, 5, 0x2c00, 0x2800), 125 {"bltn", 6, 0x3000, 3, 0x3000 + 1, 0x3c00 + 2,0x4010}, 126 {"jump", 7, 0x3c00, 1, 0x4010, 0, 0}, 127 {0,0,0,0,0,0,0} 128 }; 129 130 #undef MSP430_RLC 131 #define MSP430_RLC(n,i,sop,o1) \ 132 {#n, i, sop, 2, (o1 + 2), 0x0030, 0} 133 134 static struct rcodes_s msp430x_rcodes[] = 135 { 136 MSP430_RLC (beq, 0, 0x2400, 0x2000), 137 MSP430_RLC (bne, 1, 0x2000, 0x2400), 138 MSP430_RLC (blt, 2, 0x3800, 0x3400), 139 MSP430_RLC (bltu, 3, 0x2800, 0x2c00), 140 MSP430_RLC (bge, 4, 0x3400, 0x3800), 141 MSP430_RLC (bgeu, 5, 0x2c00, 0x2800), 142 {"bltn", 6, 0x3000, 3, 0x0030 + 1, 0x3c00 + 2, 0x3000}, 143 {"jump", 7, 0x3c00, 1, 0x0030, 0, 0}, 144 {0,0,0,0,0,0,0} 145 }; 146 #undef MSP430_RLC 147 148 /* More difficult than above and they have format 5. 149 150 COND EXPL SHORT LONG 151 ================================================================= 152 gt > jeq +2; jge label jeq +6; jl +4; br label 153 gtu > jeq +2; jhs label jeq +6; jlo +4; br label 154 leu <= jeq label; jlo label jeq +2; jhs +4; br label 155 le <= jeq label; jl label jeq +2; jge +4; br label 156 ================================================================= */ 157 158 struct hcodes_s 159 { 160 const char * name; 161 int index; /* Corresponding insn_opnumb. */ 162 int tlab; /* Number of labels in short mode. */ 163 int op0; /* Opcode for first word of short jump. */ 164 int op1; /* Opcode for second word of short jump. */ 165 int lop0; /* Opcodes for long jump mode. */ 166 int lop1; 167 int lop2; 168 }; 169 170 static struct hcodes_s msp430_hcodes[] = 171 { 172 {"bgt", 0, 1, 0x2401, 0x3400, 0x2403, 0x3802, 0x4010 }, 173 {"bgtu", 1, 1, 0x2401, 0x2c00, 0x2403, 0x2802, 0x4010 }, 174 {"bleu", 2, 2, 0x2400, 0x2800, 0x2401, 0x2c02, 0x4010 }, 175 {"ble", 3, 2, 0x2400, 0x3800, 0x2401, 0x3402, 0x4010 }, 176 {0,0,0,0,0,0,0,0} 177 }; 178 179 static struct hcodes_s msp430x_hcodes[] = 180 { 181 {"bgt", 0, 1, 0x2401, 0x3400, 0x2403, 0x3802, 0x0030 }, 182 {"bgtu", 1, 1, 0x2401, 0x2c00, 0x2403, 0x2802, 0x0030 }, 183 {"bleu", 2, 2, 0x2400, 0x2800, 0x2401, 0x2c02, 0x0030 }, 184 {"ble", 3, 2, 0x2400, 0x3800, 0x2401, 0x3402, 0x0030 }, 185 {0,0,0,0,0,0,0,0} 186 }; 187 188 const char comment_chars[] = ";"; 189 const char line_comment_chars[] = "#"; 190 const char line_separator_chars[] = "{"; 191 const char EXP_CHARS[] = "eE"; 192 const char FLT_CHARS[] = "dD"; 193 194 /* Handle long expressions. */ 195 extern LITTLENUM_TYPE generic_bignum[]; 196 197 static struct hash_control *msp430_hash; 198 199 /* Relaxations. */ 200 #define STATE_UNCOND_BRANCH 1 /* jump */ 201 #define STATE_NOOV_BRANCH 3 /* bltn */ 202 #define STATE_SIMPLE_BRANCH 2 /* bne, beq, etc... */ 203 #define STATE_EMUL_BRANCH 4 204 205 #define CNRL 2 206 #define CUBL 4 207 #define CNOL 8 208 #define CSBL 6 209 #define CEBL 4 210 211 /* Length. */ 212 #define STATE_BITS10 1 /* Wild guess. short jump. */ 213 #define STATE_WORD 2 /* 2 bytes pc rel. addr. more. */ 214 #define STATE_UNDEF 3 /* Cannot handle this yet. convert to word mode. */ 215 216 #define ENCODE_RELAX(what,length) (((what) << 2) + (length)) 217 #define RELAX_STATE(s) ((s) & 3) 218 #define RELAX_LEN(s) ((s) >> 2) 219 #define RELAX_NEXT(a,b) ENCODE_RELAX (a, b + 1) 220 221 relax_typeS md_relax_table[] = 222 { 223 /* Unused. */ 224 {1, 1, 0, 0}, 225 {1, 1, 0, 0}, 226 {1, 1, 0, 0}, 227 {1, 1, 0, 0}, 228 229 /* Unconditional jump. */ 230 {1, 1, 8, 5}, 231 {1024, -1024, CNRL, RELAX_NEXT (STATE_UNCOND_BRANCH, STATE_BITS10)}, /* state 10 bits displ */ 232 {0, 0, CUBL, RELAX_NEXT (STATE_UNCOND_BRANCH, STATE_WORD)}, /* state word */ 233 {1, 1, CUBL, 0}, /* state undef */ 234 235 /* Simple branches. */ 236 {0, 0, 8, 9}, 237 {1024, -1024, CNRL, RELAX_NEXT (STATE_SIMPLE_BRANCH, STATE_BITS10)}, /* state 10 bits displ */ 238 {0, 0, CSBL, RELAX_NEXT (STATE_SIMPLE_BRANCH, STATE_WORD)}, /* state word */ 239 {1, 1, CSBL, 0}, 240 241 /* blt no overflow branch. */ 242 {1, 1, 8, 13}, 243 {1024, -1024, CNRL, RELAX_NEXT (STATE_NOOV_BRANCH, STATE_BITS10)}, /* state 10 bits displ */ 244 {0, 0, CNOL, RELAX_NEXT (STATE_NOOV_BRANCH, STATE_WORD)}, /* state word */ 245 {1, 1, CNOL, 0}, 246 247 /* Emulated branches. */ 248 {1, 1, 8, 17}, 249 {1020, -1020, CEBL, RELAX_NEXT (STATE_EMUL_BRANCH, STATE_BITS10)}, /* state 10 bits displ */ 250 {0, 0, CNOL, RELAX_NEXT (STATE_EMUL_BRANCH, STATE_WORD)}, /* state word */ 251 {1, 1, CNOL, 0} 252 }; 253 254 255 #define MAX_OP_LEN 4096 256 257 typedef enum msp_isa 258 { 259 MSP_ISA_430, 260 MSP_ISA_430X, 261 MSP_ISA_430Xv2 262 } msp_isa; 263 264 static enum msp_isa selected_isa = MSP_ISA_430Xv2; 265 266 static inline bfd_boolean 267 target_is_430x (void) 268 { 269 return selected_isa >= MSP_ISA_430X; 270 } 271 272 static inline bfd_boolean 273 target_is_430xv2 (void) 274 { 275 return selected_isa == MSP_ISA_430Xv2; 276 } 277 278 /* Generate an absolute 16-bit relocation, for 430 (!extended_op) instructions 279 only. 280 For the 430X we generate a 430 relocation only for the case where part of an 281 expression is being extracted (e.g. #hi(EXP), #lo(EXP). Otherwise generate 282 a 430X relocation. 283 For the 430 we generate a relocation without assembler range checking 284 if we are handling an immediate value or a byte-width instruction. */ 285 286 #undef CHECK_RELOC_MSP430 287 #define CHECK_RELOC_MSP430(OP) \ 288 (target_is_430x () \ 289 ? ((OP).expp == MSP_EXPP_ALL \ 290 ? BFD_RELOC_MSP430X_ABS16 \ 291 : ((OP).vshift == 1 \ 292 ? BFD_RELOC_MSP430_ABS_HI16 : BFD_RELOC_16)) \ 293 : ((imm_op || byte_op) \ 294 ? BFD_RELOC_MSP430_16_BYTE : BFD_RELOC_MSP430_16)) 295 296 /* Generate a 16-bit pc-relative relocation. 297 For the 430X we generate a relocation without linker range checking. 298 For the 430 we generate a relocation without assembler range checking 299 if we are handling an immediate value or a byte-width instruction. */ 300 #undef CHECK_RELOC_MSP430_PCREL 301 #define CHECK_RELOC_MSP430_PCREL \ 302 (target_is_430x () \ 303 ? BFD_RELOC_MSP430X_PCR16 \ 304 : (imm_op || byte_op) \ 305 ? BFD_RELOC_MSP430_16_PCREL_BYTE : BFD_RELOC_MSP430_16_PCREL) 306 307 /* Profiling capability: 308 It is a performance hit to use gcc's profiling approach for this tiny target. 309 Even more -- jtag hardware facility does not perform any profiling functions. 310 However we've got gdb's built-in simulator where we can do anything. 311 Therefore my suggestion is: 312 313 We define new section ".profiler" which holds all profiling information. 314 We define new pseudo operation .profiler which will instruct assembler to 315 add new profile entry to the object file. Profile should take place at the 316 present address. 317 318 Pseudo-op format: 319 320 .profiler flags,function_to_profile [, cycle_corrector, extra] 321 322 where 'flags' is a combination of the following chars: 323 s - function Start 324 x - function eXit 325 i - function is in Init section 326 f - function is in Fini section 327 l - Library call 328 c - libC standard call 329 d - stack value Demand (saved at run-time in simulator) 330 I - Interrupt service routine 331 P - Prologue start 332 p - Prologue end 333 E - Epilogue start 334 e - Epilogue end 335 j - long Jump/ sjlj unwind 336 a - an Arbitrary code fragment 337 t - exTra parameter saved (constant value like frame size) 338 '""' optional: "sil" == sil 339 340 function_to_profile - function's address 341 cycle_corrector - a value which should be added to the cycle 342 counter, zero if omitted 343 extra - some extra parameter, zero if omitted. 344 345 For example: 346 ------------------------------ 347 .global fxx 348 .type fxx,@function 349 fxx: 350 .LFrameOffset_fxx=0x08 351 .profiler "scdP", fxx ; function entry. 352 ; we also demand stack value to be displayed 353 push r11 354 push r10 355 push r9 356 push r8 357 .profiler "cdp",fxx,0, .LFrameOffset_fxx ; check stack value at this point 358 ; (this is a prologue end) 359 ; note, that spare var filled with the frame size 360 mov r15,r8 361 .... 362 .profiler cdE,fxx ; check stack 363 pop r8 364 pop r9 365 pop r10 366 pop r11 367 .profiler xcde,fxx,3 ; exit adds 3 to the cycle counter 368 ret ; cause 'ret' insn takes 3 cycles 369 ------------------------------- 370 371 This profiling approach does not produce any overhead and 372 absolutely harmless. 373 So, even profiled code can be uploaded to the MCU. */ 374 #define MSP430_PROFILER_FLAG_ENTRY 1 /* s */ 375 #define MSP430_PROFILER_FLAG_EXIT 2 /* x */ 376 #define MSP430_PROFILER_FLAG_INITSECT 4 /* i */ 377 #define MSP430_PROFILER_FLAG_FINISECT 8 /* f */ 378 #define MSP430_PROFILER_FLAG_LIBCALL 0x10 /* l */ 379 #define MSP430_PROFILER_FLAG_STDCALL 0x20 /* c */ 380 #define MSP430_PROFILER_FLAG_STACKDMD 0x40 /* d */ 381 #define MSP430_PROFILER_FLAG_ISR 0x80 /* I */ 382 #define MSP430_PROFILER_FLAG_PROLSTART 0x100 /* P */ 383 #define MSP430_PROFILER_FLAG_PROLEND 0x200 /* p */ 384 #define MSP430_PROFILER_FLAG_EPISTART 0x400 /* E */ 385 #define MSP430_PROFILER_FLAG_EPIEND 0x800 /* e */ 386 #define MSP430_PROFILER_FLAG_JUMP 0x1000 /* j */ 387 #define MSP430_PROFILER_FLAG_FRAGMENT 0x2000 /* a */ 388 #define MSP430_PROFILER_FLAG_EXTRA 0x4000 /* t */ 389 #define MSP430_PROFILER_FLAG_notyet 0x8000 /* ? */ 390 391 static int 392 pow2value (int y) 393 { 394 int n = 0; 395 unsigned int x; 396 397 x = y; 398 399 if (!x) 400 return 1; 401 402 for (; x; x = x >> 1) 403 if (x & 1) 404 n++; 405 406 return n == 1; 407 } 408 409 /* Parse ordinary expression. */ 410 411 static char * 412 parse_exp (char * s, expressionS * op) 413 { 414 input_line_pointer = s; 415 expression (op); 416 if (op->X_op == O_absent) 417 as_bad (_("missing operand")); 418 419 /* Our caller is likely to check that the entire expression was parsed. 420 If we have found a hex constant with an 'h' suffix, ilp will be left 421 pointing at the 'h', so skip it here. */ 422 if (input_line_pointer != NULL 423 && op->X_op == O_constant 424 && (*input_line_pointer == 'h' || *input_line_pointer == 'H')) 425 ++ input_line_pointer; 426 return input_line_pointer; 427 } 428 429 430 /* Delete spaces from s: X ( r 1 2) => X(r12). */ 431 432 static void 433 del_spaces (char * s) 434 { 435 while (*s) 436 { 437 if (ISSPACE (*s)) 438 { 439 char *m = s + 1; 440 441 while (ISSPACE (*m) && *m) 442 m++; 443 memmove (s, m, strlen (m) + 1); 444 } 445 else 446 s++; 447 } 448 } 449 450 static inline char * 451 skip_space (char * s) 452 { 453 while (ISSPACE (*s)) 454 ++s; 455 return s; 456 } 457 458 /* Extract one word from FROM and copy it to TO. Delimiters are ",;\n" */ 459 460 static char * 461 extract_operand (char * from, char * to, int limit) 462 { 463 int size = 0; 464 465 /* Drop leading whitespace. */ 466 from = skip_space (from); 467 468 while (size < limit && *from) 469 { 470 *(to + size) = *from; 471 if (*from == ',' || *from == ';' || *from == '\n') 472 break; 473 from++; 474 size++; 475 } 476 477 *(to + size) = 0; 478 del_spaces (to); 479 480 from++; 481 482 return from; 483 } 484 485 static void 486 msp430_profiler (int dummy ATTRIBUTE_UNUSED) 487 { 488 char buffer[1024]; 489 char f[32]; 490 char * str = buffer; 491 char * flags = f; 492 int p_flags = 0; 493 char * halt; 494 int ops = 0; 495 int left; 496 char * s; 497 segT seg; 498 int subseg; 499 char * end = 0; 500 expressionS exp; 501 expressionS exp1; 502 503 s = input_line_pointer; 504 end = input_line_pointer; 505 506 while (*end && *end != '\n') 507 end++; 508 509 while (*s && *s != '\n') 510 { 511 if (*s == ',') 512 ops++; 513 s++; 514 } 515 516 left = 3 - ops; 517 518 if (ops < 1) 519 { 520 as_bad (_(".profiler pseudo requires at least two operands.")); 521 input_line_pointer = end; 522 return; 523 } 524 525 input_line_pointer = extract_operand (input_line_pointer, flags, 32); 526 527 while (*flags) 528 { 529 switch (*flags) 530 { 531 case '"': 532 break; 533 case 'a': 534 p_flags |= MSP430_PROFILER_FLAG_FRAGMENT; 535 break; 536 case 'j': 537 p_flags |= MSP430_PROFILER_FLAG_JUMP; 538 break; 539 case 'P': 540 p_flags |= MSP430_PROFILER_FLAG_PROLSTART; 541 break; 542 case 'p': 543 p_flags |= MSP430_PROFILER_FLAG_PROLEND; 544 break; 545 case 'E': 546 p_flags |= MSP430_PROFILER_FLAG_EPISTART; 547 break; 548 case 'e': 549 p_flags |= MSP430_PROFILER_FLAG_EPIEND; 550 break; 551 case 's': 552 p_flags |= MSP430_PROFILER_FLAG_ENTRY; 553 break; 554 case 'x': 555 p_flags |= MSP430_PROFILER_FLAG_EXIT; 556 break; 557 case 'i': 558 p_flags |= MSP430_PROFILER_FLAG_INITSECT; 559 break; 560 case 'f': 561 p_flags |= MSP430_PROFILER_FLAG_FINISECT; 562 break; 563 case 'l': 564 p_flags |= MSP430_PROFILER_FLAG_LIBCALL; 565 break; 566 case 'c': 567 p_flags |= MSP430_PROFILER_FLAG_STDCALL; 568 break; 569 case 'd': 570 p_flags |= MSP430_PROFILER_FLAG_STACKDMD; 571 break; 572 case 'I': 573 p_flags |= MSP430_PROFILER_FLAG_ISR; 574 break; 575 case 't': 576 p_flags |= MSP430_PROFILER_FLAG_EXTRA; 577 break; 578 default: 579 as_warn (_("unknown profiling flag - ignored.")); 580 break; 581 } 582 flags++; 583 } 584 585 if (p_flags 586 && ( ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_ENTRY 587 | MSP430_PROFILER_FLAG_EXIT)) 588 || ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_PROLSTART 589 | MSP430_PROFILER_FLAG_PROLEND 590 | MSP430_PROFILER_FLAG_EPISTART 591 | MSP430_PROFILER_FLAG_EPIEND)) 592 || ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_INITSECT 593 | MSP430_PROFILER_FLAG_FINISECT)))) 594 { 595 as_bad (_("ambiguous flags combination - '.profiler' directive ignored.")); 596 input_line_pointer = end; 597 return; 598 } 599 600 /* Generate temp symbol which denotes current location. */ 601 if (now_seg == absolute_section) /* Paranoia ? */ 602 { 603 exp1.X_op = O_constant; 604 exp1.X_add_number = abs_section_offset; 605 as_warn (_("profiling in absolute section?")); 606 } 607 else 608 { 609 exp1.X_op = O_symbol; 610 exp1.X_add_symbol = symbol_temp_new_now (); 611 exp1.X_add_number = 0; 612 } 613 614 /* Generate a symbol which holds flags value. */ 615 exp.X_op = O_constant; 616 exp.X_add_number = p_flags; 617 618 /* Save current section. */ 619 seg = now_seg; 620 subseg = now_subseg; 621 622 /* Now go to .profiler section. */ 623 obj_elf_change_section (".profiler", SHT_PROGBITS, 0, 0, 0, 0, 0, 0); 624 625 /* Save flags. */ 626 emit_expr (& exp, 2); 627 628 /* Save label value. */ 629 emit_expr (& exp1, 2); 630 631 while (ops--) 632 { 633 /* Now get profiling info. */ 634 halt = extract_operand (input_line_pointer, str, 1024); 635 /* Process like ".word xxx" directive. */ 636 (void) parse_exp (str, & exp); 637 emit_expr (& exp, 2); 638 input_line_pointer = halt; 639 } 640 641 /* Fill the rest with zeros. */ 642 exp.X_op = O_constant; 643 exp.X_add_number = 0; 644 while (left--) 645 emit_expr (& exp, 2); 646 647 /* Return to current section. */ 648 subseg_set (seg, subseg); 649 } 650 651 static char * 652 extract_word (char * from, char * to, int limit) 653 { 654 char *op_end; 655 int size = 0; 656 657 /* Drop leading whitespace. */ 658 from = skip_space (from); 659 *to = 0; 660 661 /* Find the op code end. */ 662 for (op_end = from; *op_end != 0 && is_part_of_name (*op_end);) 663 { 664 to[size++] = *op_end++; 665 if (size + 1 >= limit) 666 break; 667 } 668 669 to[size] = 0; 670 return op_end; 671 } 672 673 #define OPTION_MMCU 'm' 674 #define OPTION_RELAX 'Q' 675 #define OPTION_POLYMORPHS 'P' 676 #define OPTION_LARGE 'l' 677 static bfd_boolean large_model = FALSE; 678 #define OPTION_NO_INTR_NOPS 'N' 679 #define OPTION_INTR_NOPS 'n' 680 static bfd_boolean gen_interrupt_nops = FALSE; 681 #define OPTION_WARN_INTR_NOPS 'y' 682 #define OPTION_NO_WARN_INTR_NOPS 'Y' 683 static bfd_boolean warn_interrupt_nops = TRUE; 684 #define OPTION_UNKNOWN_INTR_NOPS 'u' 685 #define OPTION_NO_UNKNOWN_INTR_NOPS 'U' 686 static bfd_boolean do_unknown_interrupt_nops = TRUE; 687 #define OPTION_MCPU 'c' 688 #define OPTION_MOVE_DATA 'd' 689 static bfd_boolean move_data = FALSE; 690 #define OPTION_DATA_REGION 'r' 691 static bfd_boolean upper_data_region_in_use = FALSE; 692 /* The default is to use the lower region only. */ 693 static bfd_boolean lower_data_region_only = TRUE; 694 695 enum 696 { 697 OPTION_SILICON_ERRATA = OPTION_MD_BASE, 698 OPTION_SILICON_ERRATA_WARN, 699 }; 700 701 static unsigned int silicon_errata_fix = 0; 702 static unsigned int silicon_errata_warn = 0; 703 #define SILICON_ERRATA_CPU4 (1 << 0) 704 #define SILICON_ERRATA_CPU8 (1 << 1) 705 #define SILICON_ERRATA_CPU11 (1 << 2) 706 #define SILICON_ERRATA_CPU12 (1 << 3) 707 #define SILICON_ERRATA_CPU13 (1 << 4) 708 #define SILICON_ERRATA_CPU19 (1 << 5) 709 710 static void 711 msp430_set_arch (int option) 712 { 713 char str[32]; /* 32 for good measure. */ 714 715 input_line_pointer = extract_word (input_line_pointer, str, 32); 716 717 md_parse_option (option, str); 718 bfd_set_arch_mach (stdoutput, TARGET_ARCH, 719 target_is_430x () ? bfd_mach_msp430x : bfd_mach_msp11); 720 } 721 722 /* This is a copy of the same data structure found in gcc/config/msp430/msp430.c 723 Keep these two structures in sync. 724 The data in this structure has been extracted from version 1.194 of the 725 devices.csv file released by TI in September 2016. */ 726 727 struct msp430_mcu_data 728 { 729 const char * name; 730 unsigned int revision; /* 0=> MSP430, 1=>MSP430X, 2=> MSP430Xv2. */ 731 unsigned int hwmpy; /* 0=>none, 1=>16-bit, 2=>16-bit w/sign extend, 4=>32-bit, 8=> 32-bit (5xx). */ 732 } 733 msp430_mcu_data [] = 734 { 735 { "cc430f5123",2,8 }, 736 { "cc430f5125",2,8 }, 737 { "cc430f5133",2,8 }, 738 { "cc430f5135",2,8 }, 739 { "cc430f5137",2,8 }, 740 { "cc430f5143",2,8 }, 741 { "cc430f5145",2,8 }, 742 { "cc430f5147",2,8 }, 743 { "cc430f6125",2,8 }, 744 { "cc430f6126",2,8 }, 745 { "cc430f6127",2,8 }, 746 { "cc430f6135",2,8 }, 747 { "cc430f6137",2,8 }, 748 { "cc430f6143",2,8 }, 749 { "cc430f6145",2,8 }, 750 { "cc430f6147",2,8 }, 751 { "msp430afe221",0,2 }, 752 { "msp430afe222",0,2 }, 753 { "msp430afe223",0,2 }, 754 { "msp430afe231",0,2 }, 755 { "msp430afe232",0,2 }, 756 { "msp430afe233",0,2 }, 757 { "msp430afe251",0,2 }, 758 { "msp430afe252",0,2 }, 759 { "msp430afe253",0,2 }, 760 { "msp430bt5190",2,8 }, 761 { "msp430c091",0,0 }, 762 { "msp430c092",0,0 }, 763 { "msp430c111",0,0 }, 764 { "msp430c1111",0,0 }, 765 { "msp430c112",0,0 }, 766 { "msp430c1121",0,0 }, 767 { "msp430c1331",0,0 }, 768 { "msp430c1351",0,0 }, 769 { "msp430c311s",0,0 }, 770 { "msp430c312",0,0 }, 771 { "msp430c313",0,0 }, 772 { "msp430c314",0,0 }, 773 { "msp430c315",0,0 }, 774 { "msp430c323",0,0 }, 775 { "msp430c325",0,0 }, 776 { "msp430c336",0,1 }, 777 { "msp430c337",0,1 }, 778 { "msp430c412",0,0 }, 779 { "msp430c413",0,0 }, 780 { "msp430cg4616",1,1 }, 781 { "msp430cg4617",1,1 }, 782 { "msp430cg4618",1,1 }, 783 { "msp430cg4619",1,1 }, 784 { "msp430e112",0,0 }, 785 { "msp430e313",0,0 }, 786 { "msp430e315",0,0 }, 787 { "msp430e325",0,0 }, 788 { "msp430e337",0,1 }, 789 { "msp430f110",0,0 }, 790 { "msp430f1101",0,0 }, 791 { "msp430f1101a",0,0 }, 792 { "msp430f1111",0,0 }, 793 { "msp430f1111a",0,0 }, 794 { "msp430f112",0,0 }, 795 { "msp430f1121",0,0 }, 796 { "msp430f1121a",0,0 }, 797 { "msp430f1122",0,0 }, 798 { "msp430f1132",0,0 }, 799 { "msp430f122",0,0 }, 800 { "msp430f1222",0,0 }, 801 { "msp430f123",0,0 }, 802 { "msp430f1232",0,0 }, 803 { "msp430f133",0,0 }, 804 { "msp430f135",0,0 }, 805 { "msp430f147",0,1 }, 806 { "msp430f1471",0,1 }, 807 { "msp430f148",0,1 }, 808 { "msp430f1481",0,1 }, 809 { "msp430f149",0,1 }, 810 { "msp430f1491",0,1 }, 811 { "msp430f155",0,0 }, 812 { "msp430f156",0,0 }, 813 { "msp430f157",0,0 }, 814 { "msp430f1610",0,1 }, 815 { "msp430f1611",0,1 }, 816 { "msp430f1612",0,1 }, 817 { "msp430f167",0,1 }, 818 { "msp430f168",0,1 }, 819 { "msp430f169",0,1 }, 820 { "msp430f2001",0,0 }, 821 { "msp430f2002",0,0 }, 822 { "msp430f2003",0,0 }, 823 { "msp430f2011",0,0 }, 824 { "msp430f2012",0,0 }, 825 { "msp430f2013",0,0 }, 826 { "msp430f2101",0,0 }, 827 { "msp430f2111",0,0 }, 828 { "msp430f2112",0,0 }, 829 { "msp430f2121",0,0 }, 830 { "msp430f2122",0,0 }, 831 { "msp430f2131",0,0 }, 832 { "msp430f2132",0,0 }, 833 { "msp430f2232",0,0 }, 834 { "msp430f2234",0,0 }, 835 { "msp430f2252",0,0 }, 836 { "msp430f2254",0,0 }, 837 { "msp430f2272",0,0 }, 838 { "msp430f2274",0,0 }, 839 { "msp430f233",0,2 }, 840 { "msp430f2330",0,2 }, 841 { "msp430f235",0,2 }, 842 { "msp430f2350",0,2 }, 843 { "msp430f2370",0,2 }, 844 { "msp430f2410",0,2 }, 845 { "msp430f2416",1,2 }, 846 { "msp430f2417",1,2 }, 847 { "msp430f2418",1,2 }, 848 { "msp430f2419",1,2 }, 849 { "msp430f247",0,2 }, 850 { "msp430f2471",0,2 }, 851 { "msp430f248",0,2 }, 852 { "msp430f2481",0,2 }, 853 { "msp430f249",0,2 }, 854 { "msp430f2491",0,2 }, 855 { "msp430f2616",1,2 }, 856 { "msp430f2617",1,2 }, 857 { "msp430f2618",1,2 }, 858 { "msp430f2619",1,2 }, 859 { "msp430f412",0,0 }, 860 { "msp430f413",0,0 }, 861 { "msp430f4132",0,0 }, 862 { "msp430f415",0,0 }, 863 { "msp430f4152",0,0 }, 864 { "msp430f417",0,0 }, 865 { "msp430f423",0,1 }, 866 { "msp430f423a",0,1 }, 867 { "msp430f425",0,1 }, 868 { "msp430f4250",0,0 }, 869 { "msp430f425a",0,1 }, 870 { "msp430f4260",0,0 }, 871 { "msp430f427",0,1 }, 872 { "msp430f4270",0,0 }, 873 { "msp430f427a",0,1 }, 874 { "msp430f435",0,0 }, 875 { "msp430f4351",0,0 }, 876 { "msp430f436",0,0 }, 877 { "msp430f4361",0,0 }, 878 { "msp430f437",0,0 }, 879 { "msp430f4371",0,0 }, 880 { "msp430f438",0,0 }, 881 { "msp430f439",0,0 }, 882 { "msp430f447",0,1 }, 883 { "msp430f448",0,1 }, 884 { "msp430f4481",0,1 }, 885 { "msp430f449",0,1 }, 886 { "msp430f4491",0,1 }, 887 { "msp430f4616",1,1 }, 888 { "msp430f46161",1,1 }, 889 { "msp430f4617",1,1 }, 890 { "msp430f46171",1,1 }, 891 { "msp430f4618",1,1 }, 892 { "msp430f46181",1,1 }, 893 { "msp430f4619",1,1 }, 894 { "msp430f46191",1,1 }, 895 { "msp430f47126",1,4 }, 896 { "msp430f47127",1,4 }, 897 { "msp430f47163",1,4 }, 898 { "msp430f47166",1,4 }, 899 { "msp430f47167",1,4 }, 900 { "msp430f47173",1,4 }, 901 { "msp430f47176",1,4 }, 902 { "msp430f47177",1,4 }, 903 { "msp430f47183",1,4 }, 904 { "msp430f47186",1,4 }, 905 { "msp430f47187",1,4 }, 906 { "msp430f47193",1,4 }, 907 { "msp430f47196",1,4 }, 908 { "msp430f47197",1,4 }, 909 { "msp430f477",0,0 }, 910 { "msp430f478",0,0 }, 911 { "msp430f4783",0,4 }, 912 { "msp430f4784",0,4 }, 913 { "msp430f479",0,0 }, 914 { "msp430f4793",0,4 }, 915 { "msp430f4794",0,4 }, 916 { "msp430f5131",2,8 }, 917 { "msp430f5132",2,8 }, 918 { "msp430f5151",2,8 }, 919 { "msp430f5152",2,8 }, 920 { "msp430f5171",2,8 }, 921 { "msp430f5172",2,8 }, 922 { "msp430f5212",2,8 }, 923 { "msp430f5213",2,8 }, 924 { "msp430f5214",2,8 }, 925 { "msp430f5217",2,8 }, 926 { "msp430f5218",2,8 }, 927 { "msp430f5219",2,8 }, 928 { "msp430f5222",2,8 }, 929 { "msp430f5223",2,8 }, 930 { "msp430f5224",2,8 }, 931 { "msp430f5227",2,8 }, 932 { "msp430f5228",2,8 }, 933 { "msp430f5229",2,8 }, 934 { "msp430f5232",2,8 }, 935 { "msp430f5234",2,8 }, 936 { "msp430f5237",2,8 }, 937 { "msp430f5239",2,8 }, 938 { "msp430f5242",2,8 }, 939 { "msp430f5244",2,8 }, 940 { "msp430f5247",2,8 }, 941 { "msp430f5249",2,8 }, 942 { "msp430f5252",2,8 }, 943 { "msp430f5253",2,8 }, 944 { "msp430f5254",2,8 }, 945 { "msp430f5255",2,8 }, 946 { "msp430f5256",2,8 }, 947 { "msp430f5257",2,8 }, 948 { "msp430f5258",2,8 }, 949 { "msp430f5259",2,8 }, 950 { "msp430f5304",2,8 }, 951 { "msp430f5308",2,8 }, 952 { "msp430f5309",2,8 }, 953 { "msp430f5310",2,8 }, 954 { "msp430f5324",2,8 }, 955 { "msp430f5325",2,8 }, 956 { "msp430f5326",2,8 }, 957 { "msp430f5327",2,8 }, 958 { "msp430f5328",2,8 }, 959 { "msp430f5329",2,8 }, 960 { "msp430f5333",2,8 }, 961 { "msp430f5335",2,8 }, 962 { "msp430f5336",2,8 }, 963 { "msp430f5338",2,8 }, 964 { "msp430f5340",2,8 }, 965 { "msp430f5341",2,8 }, 966 { "msp430f5342",2,8 }, 967 { "msp430f5358",2,8 }, 968 { "msp430f5359",2,8 }, 969 { "msp430f5418",2,8 }, 970 { "msp430f5418a",2,8 }, 971 { "msp430f5419",2,8 }, 972 { "msp430f5419a",2,8 }, 973 { "msp430f5435",2,8 }, 974 { "msp430f5435a",2,8 }, 975 { "msp430f5436",2,8 }, 976 { "msp430f5436a",2,8 }, 977 { "msp430f5437",2,8 }, 978 { "msp430f5437a",2,8 }, 979 { "msp430f5438",2,8 }, 980 { "msp430f5438a",2,8 }, 981 { "msp430f5500",2,8 }, 982 { "msp430f5501",2,8 }, 983 { "msp430f5502",2,8 }, 984 { "msp430f5503",2,8 }, 985 { "msp430f5504",2,8 }, 986 { "msp430f5505",2,8 }, 987 { "msp430f5506",2,8 }, 988 { "msp430f5507",2,8 }, 989 { "msp430f5508",2,8 }, 990 { "msp430f5509",2,8 }, 991 { "msp430f5510",2,8 }, 992 { "msp430f5513",2,8 }, 993 { "msp430f5514",2,8 }, 994 { "msp430f5515",2,8 }, 995 { "msp430f5517",2,8 }, 996 { "msp430f5519",2,8 }, 997 { "msp430f5521",2,8 }, 998 { "msp430f5522",2,8 }, 999 { "msp430f5524",2,8 }, 1000 { "msp430f5525",2,8 }, 1001 { "msp430f5526",2,8 }, 1002 { "msp430f5527",2,8 }, 1003 { "msp430f5528",2,8 }, 1004 { "msp430f5529",2,8 }, 1005 { "msp430f5630",2,8 }, 1006 { "msp430f5631",2,8 }, 1007 { "msp430f5632",2,8 }, 1008 { "msp430f5633",2,8 }, 1009 { "msp430f5634",2,8 }, 1010 { "msp430f5635",2,8 }, 1011 { "msp430f5636",2,8 }, 1012 { "msp430f5637",2,8 }, 1013 { "msp430f5638",2,8 }, 1014 { "msp430f5658",2,8 }, 1015 { "msp430f5659",2,8 }, 1016 { "msp430f5xx_6xxgeneric",2,8 }, 1017 { "msp430f6433",2,8 }, 1018 { "msp430f6435",2,8 }, 1019 { "msp430f6436",2,8 }, 1020 { "msp430f6438",2,8 }, 1021 { "msp430f6458",2,8 }, 1022 { "msp430f6459",2,8 }, 1023 { "msp430f6630",2,8 }, 1024 { "msp430f6631",2,8 }, 1025 { "msp430f6632",2,8 }, 1026 { "msp430f6633",2,8 }, 1027 { "msp430f6634",2,8 }, 1028 { "msp430f6635",2,8 }, 1029 { "msp430f6636",2,8 }, 1030 { "msp430f6637",2,8 }, 1031 { "msp430f6638",2,8 }, 1032 { "msp430f6658",2,8 }, 1033 { "msp430f6659",2,8 }, 1034 { "msp430f6720",2,8 }, 1035 { "msp430f6720a",2,8 }, 1036 { "msp430f6721",2,8 }, 1037 { "msp430f6721a",2,8 }, 1038 { "msp430f6723",2,8 }, 1039 { "msp430f6723a",2,8 }, 1040 { "msp430f6724",2,8 }, 1041 { "msp430f6724a",2,8 }, 1042 { "msp430f6725",2,8 }, 1043 { "msp430f6725a",2,8 }, 1044 { "msp430f6726",2,8 }, 1045 { "msp430f6726a",2,8 }, 1046 { "msp430f6730",2,8 }, 1047 { "msp430f6730a",2,8 }, 1048 { "msp430f6731",2,8 }, 1049 { "msp430f6731a",2,8 }, 1050 { "msp430f6733",2,8 }, 1051 { "msp430f6733a",2,8 }, 1052 { "msp430f6734",2,8 }, 1053 { "msp430f6734a",2,8 }, 1054 { "msp430f6735",2,8 }, 1055 { "msp430f6735a",2,8 }, 1056 { "msp430f6736",2,8 }, 1057 { "msp430f6736a",2,8 }, 1058 { "msp430f6745",2,8 }, 1059 { "msp430f67451",2,8 }, 1060 { "msp430f67451a",2,8 }, 1061 { "msp430f6745a",2,8 }, 1062 { "msp430f6746",2,8 }, 1063 { "msp430f67461",2,8 }, 1064 { "msp430f67461a",2,8 }, 1065 { "msp430f6746a",2,8 }, 1066 { "msp430f6747",2,8 }, 1067 { "msp430f67471",2,8 }, 1068 { "msp430f67471a",2,8 }, 1069 { "msp430f6747a",2,8 }, 1070 { "msp430f6748",2,8 }, 1071 { "msp430f67481",2,8 }, 1072 { "msp430f67481a",2,8 }, 1073 { "msp430f6748a",2,8 }, 1074 { "msp430f6749",2,8 }, 1075 { "msp430f67491",2,8 }, 1076 { "msp430f67491a",2,8 }, 1077 { "msp430f6749a",2,8 }, 1078 { "msp430f67621",2,8 }, 1079 { "msp430f67621a",2,8 }, 1080 { "msp430f67641",2,8 }, 1081 { "msp430f67641a",2,8 }, 1082 { "msp430f6765",2,8 }, 1083 { "msp430f67651",2,8 }, 1084 { "msp430f67651a",2,8 }, 1085 { "msp430f6765a",2,8 }, 1086 { "msp430f6766",2,8 }, 1087 { "msp430f67661",2,8 }, 1088 { "msp430f67661a",2,8 }, 1089 { "msp430f6766a",2,8 }, 1090 { "msp430f6767",2,8 }, 1091 { "msp430f67671",2,8 }, 1092 { "msp430f67671a",2,8 }, 1093 { "msp430f6767a",2,8 }, 1094 { "msp430f6768",2,8 }, 1095 { "msp430f67681",2,8 }, 1096 { "msp430f67681a",2,8 }, 1097 { "msp430f6768a",2,8 }, 1098 { "msp430f6769",2,8 }, 1099 { "msp430f67691",2,8 }, 1100 { "msp430f67691a",2,8 }, 1101 { "msp430f6769a",2,8 }, 1102 { "msp430f6775",2,8 }, 1103 { "msp430f67751",2,8 }, 1104 { "msp430f67751a",2,8 }, 1105 { "msp430f6775a",2,8 }, 1106 { "msp430f6776",2,8 }, 1107 { "msp430f67761",2,8 }, 1108 { "msp430f67761a",2,8 }, 1109 { "msp430f6776a",2,8 }, 1110 { "msp430f6777",2,8 }, 1111 { "msp430f67771",2,8 }, 1112 { "msp430f67771a",2,8 }, 1113 { "msp430f6777a",2,8 }, 1114 { "msp430f6778",2,8 }, 1115 { "msp430f67781",2,8 }, 1116 { "msp430f67781a",2,8 }, 1117 { "msp430f6778a",2,8 }, 1118 { "msp430f6779",2,8 }, 1119 { "msp430f67791",2,8 }, 1120 { "msp430f67791a",2,8 }, 1121 { "msp430f6779a",2,8 }, 1122 { "msp430fe423",0,0 }, 1123 { "msp430fe4232",0,0 }, 1124 { "msp430fe423a",0,0 }, 1125 { "msp430fe4242",0,0 }, 1126 { "msp430fe425",0,0 }, 1127 { "msp430fe4252",0,0 }, 1128 { "msp430fe425a",0,0 }, 1129 { "msp430fe427",0,0 }, 1130 { "msp430fe4272",0,0 }, 1131 { "msp430fe427a",0,0 }, 1132 { "msp430fg4250",0,0 }, 1133 { "msp430fg4260",0,0 }, 1134 { "msp430fg4270",0,0 }, 1135 { "msp430fg437",0,0 }, 1136 { "msp430fg438",0,0 }, 1137 { "msp430fg439",0,0 }, 1138 { "msp430fg4616",1,1 }, 1139 { "msp430fg4617",1,1 }, 1140 { "msp430fg4618",1,1 }, 1141 { "msp430fg4619",1,1 }, 1142 { "msp430fg477",0,0 }, 1143 { "msp430fg478",0,0 }, 1144 { "msp430fg479",0,0 }, 1145 { "msp430fg6425",2,8 }, 1146 { "msp430fg6426",2,8 }, 1147 { "msp430fg6625",2,8 }, 1148 { "msp430fg6626",2,8 }, 1149 { "msp430fr2032",2,0 }, 1150 { "msp430fr2033",2,0 }, 1151 { "msp430fr2110",2,0 }, 1152 { "msp430fr2111",2,0 }, 1153 { "msp430fr2310",2,0 }, 1154 { "msp430fr2311",2,0 }, 1155 { "msp430fr2433",2,8 }, 1156 { "msp430fr2532",2,8 }, 1157 { "msp430fr2533",2,8 }, 1158 { "msp430fr2632",2,8 }, 1159 { "msp430fr2633",2,8 }, 1160 { "msp430fr2xx_4xxgeneric",2,8 }, 1161 { "msp430fr4131",2,0 }, 1162 { "msp430fr4132",2,0 }, 1163 { "msp430fr4133",2,0 }, 1164 { "msp430fr5720",2,8 }, 1165 { "msp430fr5721",2,8 }, 1166 { "msp430fr5722",2,8 }, 1167 { "msp430fr5723",2,8 }, 1168 { "msp430fr5724",2,8 }, 1169 { "msp430fr5725",2,8 }, 1170 { "msp430fr5726",2,8 }, 1171 { "msp430fr5727",2,8 }, 1172 { "msp430fr5728",2,8 }, 1173 { "msp430fr5729",2,8 }, 1174 { "msp430fr5730",2,8 }, 1175 { "msp430fr5731",2,8 }, 1176 { "msp430fr5732",2,8 }, 1177 { "msp430fr5733",2,8 }, 1178 { "msp430fr5734",2,8 }, 1179 { "msp430fr5735",2,8 }, 1180 { "msp430fr5736",2,8 }, 1181 { "msp430fr5737",2,8 }, 1182 { "msp430fr5738",2,8 }, 1183 { "msp430fr5739",2,8 }, 1184 { "msp430fr57xxgeneric",2,8 }, 1185 { "msp430fr5847",2,8 }, 1186 { "msp430fr58471",2,8 }, 1187 { "msp430fr5848",2,8 }, 1188 { "msp430fr5849",2,8 }, 1189 { "msp430fr5857",2,8 }, 1190 { "msp430fr5858",2,8 }, 1191 { "msp430fr5859",2,8 }, 1192 { "msp430fr5867",2,8 }, 1193 { "msp430fr58671",2,8 }, 1194 { "msp430fr5868",2,8 }, 1195 { "msp430fr5869",2,8 }, 1196 { "msp430fr5870",2,8 }, 1197 { "msp430fr5872",2,8 }, 1198 { "msp430fr58721",2,8 }, 1199 { "msp430fr5887",2,8 }, 1200 { "msp430fr5888",2,8 }, 1201 { "msp430fr5889",2,8 }, 1202 { "msp430fr58891",2,8 }, 1203 { "msp430fr5922",2,8 }, 1204 { "msp430fr59221",2,8 }, 1205 { "msp430fr5947",2,8 }, 1206 { "msp430fr59471",2,8 }, 1207 { "msp430fr5948",2,8 }, 1208 { "msp430fr5949",2,8 }, 1209 { "msp430fr5957",2,8 }, 1210 { "msp430fr5958",2,8 }, 1211 { "msp430fr5959",2,8 }, 1212 { "msp430fr5962",2,8 }, 1213 { "msp430fr5964",2,8 }, 1214 { "msp430fr5967",2,8 }, 1215 { "msp430fr5968",2,8 }, 1216 { "msp430fr5969",2,8 }, 1217 { "msp430fr59691",2,8 }, 1218 { "msp430fr5970",2,8 }, 1219 { "msp430fr5972",2,8 }, 1220 { "msp430fr59721",2,8 }, 1221 { "msp430fr5986",2,8 }, 1222 { "msp430fr5987",2,8 }, 1223 { "msp430fr5988",2,8 }, 1224 { "msp430fr5989",2,8 }, 1225 { "msp430fr59891",2,8 }, 1226 { "msp430fr5992",2,8 }, 1227 { "msp430fr5994",2,8 }, 1228 { "msp430fr59941",2,8 }, 1229 { "msp430fr5xx_6xxgeneric",2,8 }, 1230 { "msp430fr6820",2,8 }, 1231 { "msp430fr6822",2,8 }, 1232 { "msp430fr68221",2,8 }, 1233 { "msp430fr6870",2,8 }, 1234 { "msp430fr6872",2,8 }, 1235 { "msp430fr68721",2,8 }, 1236 { "msp430fr6877",2,8 }, 1237 { "msp430fr6879",2,8 }, 1238 { "msp430fr68791",2,8 }, 1239 { "msp430fr6887",2,8 }, 1240 { "msp430fr6888",2,8 }, 1241 { "msp430fr6889",2,8 }, 1242 { "msp430fr68891",2,8 }, 1243 { "msp430fr6920",2,8 }, 1244 { "msp430fr6922",2,8 }, 1245 { "msp430fr69221",2,8 }, 1246 { "msp430fr6927",2,8 }, 1247 { "msp430fr69271",2,8 }, 1248 { "msp430fr6928",2,8 }, 1249 { "msp430fr6970",2,8 }, 1250 { "msp430fr6972",2,8 }, 1251 { "msp430fr69721",2,8 }, 1252 { "msp430fr6977",2,8 }, 1253 { "msp430fr6979",2,8 }, 1254 { "msp430fr69791",2,8 }, 1255 { "msp430fr6987",2,8 }, 1256 { "msp430fr6988",2,8 }, 1257 { "msp430fr6989",2,8 }, 1258 { "msp430fr69891",2,8 }, 1259 { "msp430fw423",0,0 }, 1260 { "msp430fw425",0,0 }, 1261 { "msp430fw427",0,0 }, 1262 { "msp430fw428",0,0 }, 1263 { "msp430fw429",0,0 }, 1264 { "msp430g2001",0,0 }, 1265 { "msp430g2101",0,0 }, 1266 { "msp430g2102",0,0 }, 1267 { "msp430g2111",0,0 }, 1268 { "msp430g2112",0,0 }, 1269 { "msp430g2113",0,0 }, 1270 { "msp430g2121",0,0 }, 1271 { "msp430g2131",0,0 }, 1272 { "msp430g2132",0,0 }, 1273 { "msp430g2152",0,0 }, 1274 { "msp430g2153",0,0 }, 1275 { "msp430g2201",0,0 }, 1276 { "msp430g2202",0,0 }, 1277 { "msp430g2203",0,0 }, 1278 { "msp430g2210",0,0 }, 1279 { "msp430g2211",0,0 }, 1280 { "msp430g2212",0,0 }, 1281 { "msp430g2213",0,0 }, 1282 { "msp430g2221",0,0 }, 1283 { "msp430g2230",0,0 }, 1284 { "msp430g2231",0,0 }, 1285 { "msp430g2232",0,0 }, 1286 { "msp430g2233",0,0 }, 1287 { "msp430g2252",0,0 }, 1288 { "msp430g2253",0,0 }, 1289 { "msp430g2302",0,0 }, 1290 { "msp430g2303",0,0 }, 1291 { "msp430g2312",0,0 }, 1292 { "msp430g2313",0,0 }, 1293 { "msp430g2332",0,0 }, 1294 { "msp430g2333",0,0 }, 1295 { "msp430g2352",0,0 }, 1296 { "msp430g2353",0,0 }, 1297 { "msp430g2402",0,0 }, 1298 { "msp430g2403",0,0 }, 1299 { "msp430g2412",0,0 }, 1300 { "msp430g2413",0,0 }, 1301 { "msp430g2432",0,0 }, 1302 { "msp430g2433",0,0 }, 1303 { "msp430g2444",0,0 }, 1304 { "msp430g2452",0,0 }, 1305 { "msp430g2453",0,0 }, 1306 { "msp430g2513",0,0 }, 1307 { "msp430g2533",0,0 }, 1308 { "msp430g2544",0,0 }, 1309 { "msp430g2553",0,0 }, 1310 { "msp430g2744",0,0 }, 1311 { "msp430g2755",0,0 }, 1312 { "msp430g2855",0,0 }, 1313 { "msp430g2955",0,0 }, 1314 { "msp430i2020",0,2 }, 1315 { "msp430i2021",0,2 }, 1316 { "msp430i2030",0,2 }, 1317 { "msp430i2031",0,2 }, 1318 { "msp430i2040",0,2 }, 1319 { "msp430i2041",0,2 }, 1320 { "msp430i2xxgeneric",0,2 }, 1321 { "msp430l092",0,0 }, 1322 { "msp430p112",0,0 }, 1323 { "msp430p313",0,0 }, 1324 { "msp430p315",0,0 }, 1325 { "msp430p315s",0,0 }, 1326 { "msp430p325",0,0 }, 1327 { "msp430p337",0,1 }, 1328 { "msp430sl5438a",2,8 }, 1329 { "msp430tch5e",0,0 }, 1330 { "msp430xgeneric",2,8 }, 1331 { "rf430f5144",2,8 }, 1332 { "rf430f5155",2,8 }, 1333 { "rf430f5175",2,8 }, 1334 { "rf430frl152h",0,0 }, 1335 { "rf430frl152h_rom",0,0 }, 1336 { "rf430frl153h",0,0 }, 1337 { "rf430frl153h_rom",0,0 }, 1338 { "rf430frl154h",0,0 }, 1339 { "rf430frl154h_rom",0,0 } 1340 }; 1341 1342 int 1343 md_parse_option (int c, const char * arg) 1344 { 1345 switch (c) 1346 { 1347 case OPTION_SILICON_ERRATA: 1348 case OPTION_SILICON_ERRATA_WARN: 1349 { 1350 signed int i; 1351 const struct 1352 { 1353 const char * name; 1354 unsigned int length; 1355 unsigned int bitfield; 1356 } erratas[] = 1357 { 1358 { STRING_COMMA_LEN ("cpu4"), SILICON_ERRATA_CPU4 }, 1359 { STRING_COMMA_LEN ("cpu8"), SILICON_ERRATA_CPU8 }, 1360 { STRING_COMMA_LEN ("cpu11"), SILICON_ERRATA_CPU11 }, 1361 { STRING_COMMA_LEN ("cpu12"), SILICON_ERRATA_CPU12 }, 1362 { STRING_COMMA_LEN ("cpu13"), SILICON_ERRATA_CPU13 }, 1363 { STRING_COMMA_LEN ("cpu19"), SILICON_ERRATA_CPU19 }, 1364 }; 1365 1366 do 1367 { 1368 for (i = ARRAY_SIZE (erratas); i--;) 1369 if (strncasecmp (arg, erratas[i].name, erratas[i].length) == 0) 1370 { 1371 if (c == OPTION_SILICON_ERRATA) 1372 silicon_errata_fix |= erratas[i].bitfield; 1373 else 1374 silicon_errata_warn |= erratas[i].bitfield; 1375 arg += erratas[i].length; 1376 break; 1377 } 1378 if (i < 0) 1379 { 1380 as_warn (_("Unrecognised CPU errata name starting here: %s"), arg); 1381 break; 1382 } 1383 if (*arg == 0) 1384 break; 1385 if (*arg != ',') 1386 as_warn (_("Expecting comma after CPU errata name, not: %s"), arg); 1387 else 1388 arg ++; 1389 } 1390 while (*arg != 0); 1391 } 1392 return 1; 1393 1394 case OPTION_MMCU: 1395 if (arg == NULL) 1396 as_fatal (_("MCU option requires a name\n")); 1397 1398 if (strcasecmp ("msp430", arg) == 0) 1399 selected_isa = MSP_ISA_430; 1400 else if (strcasecmp ("msp430xv2", arg) == 0) 1401 selected_isa = MSP_ISA_430Xv2; 1402 else if (strcasecmp ("msp430x", arg) == 0) 1403 selected_isa = MSP_ISA_430X; 1404 else 1405 { 1406 int i; 1407 1408 for (i = ARRAY_SIZE (msp430_mcu_data); i--;) 1409 if (strcasecmp (msp430_mcu_data[i].name, arg) == 0) 1410 { 1411 switch (msp430_mcu_data[i].revision) 1412 { 1413 case 0: selected_isa = MSP_ISA_430; break; 1414 case 1: selected_isa = MSP_ISA_430X; break; 1415 case 2: selected_isa = MSP_ISA_430Xv2; break; 1416 } 1417 break; 1418 } 1419 } 1420 /* It is not an error if we do not match the MCU name. */ 1421 return 1; 1422 1423 case OPTION_MCPU: 1424 if (strcmp (arg, "430") == 0 1425 || strcasecmp (arg, "msp430") == 0) 1426 selected_isa = MSP_ISA_430; 1427 else if (strcasecmp (arg, "430x") == 0 1428 || strcasecmp (arg, "msp430x") == 0) 1429 selected_isa = MSP_ISA_430X; 1430 else if (strcasecmp (arg, "430xv2") == 0 1431 || strcasecmp (arg, "msp430xv2") == 0) 1432 selected_isa = MSP_ISA_430Xv2; 1433 else 1434 as_fatal (_("unrecognised argument to -mcpu option '%s'"), arg); 1435 return 1; 1436 1437 case OPTION_RELAX: 1438 msp430_enable_relax = 1; 1439 return 1; 1440 1441 case OPTION_POLYMORPHS: 1442 msp430_enable_polys = 1; 1443 return 1; 1444 1445 case OPTION_LARGE: 1446 large_model = TRUE; 1447 return 1; 1448 1449 case OPTION_NO_INTR_NOPS: 1450 gen_interrupt_nops = FALSE; 1451 return 1; 1452 case OPTION_INTR_NOPS: 1453 gen_interrupt_nops = TRUE; 1454 return 1; 1455 1456 case OPTION_WARN_INTR_NOPS: 1457 warn_interrupt_nops = TRUE; 1458 return 1; 1459 case OPTION_NO_WARN_INTR_NOPS: 1460 warn_interrupt_nops = FALSE; 1461 return 1; 1462 1463 case OPTION_UNKNOWN_INTR_NOPS: 1464 do_unknown_interrupt_nops = TRUE; 1465 return 1; 1466 case OPTION_NO_UNKNOWN_INTR_NOPS: 1467 do_unknown_interrupt_nops = FALSE; 1468 return 1; 1469 1470 case OPTION_MOVE_DATA: 1471 move_data = TRUE; 1472 return 1; 1473 1474 case OPTION_DATA_REGION: 1475 if (strcmp (arg, "upper") == 0 1476 || strcmp (arg, "either") == 0) 1477 upper_data_region_in_use = TRUE; 1478 if (strcmp (arg, "upper") == 0 1479 || strcmp (arg, "either") == 0 1480 /* With data-region=none, the compiler has generated code assuming 1481 data could be in the upper region, but nothing has been explicitly 1482 placed there. */ 1483 || strcmp (arg, "none") == 0) 1484 lower_data_region_only = FALSE; 1485 return 1; 1486 } 1487 1488 return 0; 1489 } 1490 1491 /* The intention here is to have the mere presence of these sections 1492 cause the object to have a reference to a well-known symbol. This 1493 reference pulls in the bits of the runtime (crt0) that initialize 1494 these sections. Thus, for example, the startup code to call 1495 memset() to initialize .bss will only be linked in when there is a 1496 non-empty .bss section. Otherwise, the call would exist but have a 1497 zero length parameter, which is a waste of memory and cycles. 1498 1499 The code which initializes these sections should have a global 1500 label for these symbols, and should be marked with KEEP() in the 1501 linker script. */ 1502 1503 static void 1504 msp430_make_init_symbols (const char * name) 1505 { 1506 if (strncmp (name, ".bss", 4) == 0 1507 || strncmp (name, ".lower.bss", 10) == 0 1508 || strncmp (name, ".either.bss", 11) == 0 1509 || strncmp (name, ".gnu.linkonce.b.", 16) == 0) 1510 (void) symbol_find_or_make ("__crt0_init_bss"); 1511 1512 if (strncmp (name, ".data", 5) == 0 1513 || strncmp (name, ".lower.data", 11) == 0 1514 || strncmp (name, ".either.data", 12) == 0 1515 || strncmp (name, ".gnu.linkonce.d.", 16) == 0) 1516 (void) symbol_find_or_make ("__crt0_movedata"); 1517 /* Note - data assigned to the .either.data section may end up being 1518 placed in the .upper.data section if the .lower.data section is 1519 full. Hence the need to define the crt0 symbol. 1520 The linker may create upper or either data sections, even when none exist 1521 at the moment, so use the value of the data-region flag to determine if 1522 the symbol is needed. */ 1523 if (strncmp (name, ".either.data", 12) == 0 1524 || strncmp (name, ".upper.data", 11) == 0 1525 || upper_data_region_in_use) 1526 (void) symbol_find_or_make ("__crt0_move_highdata"); 1527 1528 /* See note about .either.data above. */ 1529 if (strncmp (name, ".upper.bss", 10) == 0 1530 || strncmp (name, ".either.bss", 11) == 0 1531 || upper_data_region_in_use) 1532 (void) symbol_find_or_make ("__crt0_init_highbss"); 1533 1534 /* The following symbols are for the crt0 functions that run through 1535 the different .*_array sections and call the functions placed there. 1536 - init_array stores global static C++ constructors to run before main. 1537 - preinit_array is not expected to ever be used for MSP430. 1538 GCC only places initialization functions for runtime "sanitizers" 1539 (i.e. {a,l,t,u}san) and "virtual table verification" in preinit_array. 1540 - fini_array stores global static C++ destructors to run after calling 1541 exit() or returning from main. 1542 __crt0_run_array is required to actually call the functions in the above 1543 arrays. */ 1544 if (strncmp (name, ".init_array", 11) == 0) 1545 { 1546 (void) symbol_find_or_make ("__crt0_run_init_array"); 1547 (void) symbol_find_or_make ("__crt0_run_array"); 1548 } 1549 else if (strncmp (name, ".preinit_array", 14) == 0) 1550 { 1551 (void) symbol_find_or_make ("__crt0_run_preinit_array"); 1552 (void) symbol_find_or_make ("__crt0_run_array"); 1553 } 1554 else if (strncmp (name, ".fini_array", 11) == 0) 1555 { 1556 (void) symbol_find_or_make ("__crt0_run_fini_array"); 1557 (void) symbol_find_or_make ("__crt0_run_array"); 1558 } 1559 } 1560 1561 static void 1562 msp430_section (int arg) 1563 { 1564 char * saved_ilp = input_line_pointer; 1565 const char * name = obj_elf_section_name (); 1566 1567 msp430_make_init_symbols (name); 1568 1569 input_line_pointer = saved_ilp; 1570 obj_elf_section (arg); 1571 } 1572 1573 void 1574 msp430_frob_section (asection *sec) 1575 { 1576 const char *name = sec->name; 1577 1578 if (sec->size == 0) 1579 return; 1580 1581 msp430_make_init_symbols (name); 1582 } 1583 1584 static void 1585 msp430_lcomm (int ignore ATTRIBUTE_UNUSED) 1586 { 1587 symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); 1588 1589 if (symbolP) 1590 symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; 1591 (void) symbol_find_or_make ("__crt0_init_bss"); 1592 } 1593 1594 static void 1595 msp430_comm (int needs_align) 1596 { 1597 s_comm_internal (needs_align, elf_common_parse); 1598 (void) symbol_find_or_make ("__crt0_init_bss"); 1599 } 1600 1601 static void 1602 msp430_refsym (int arg ATTRIBUTE_UNUSED) 1603 { 1604 char sym_name[1024]; 1605 input_line_pointer = extract_word (input_line_pointer, sym_name, 1024); 1606 1607 (void) symbol_find_or_make (sym_name); 1608 } 1609 1610 /* Handle a .mspabi_attribute or .gnu_attribute directive. 1611 attr_type is 0 for .mspabi_attribute or 1 for .gnu_attribute. 1612 This is only used for validating the attributes in the assembly file against 1613 the options gas has been invoked with. If the attributes and options are 1614 compatible then we add the attributes to the assembly file in 1615 msp430_md_end. */ 1616 static void 1617 msp430_object_attribute (int attr_type) 1618 { 1619 char tag_name_s[32]; 1620 char tag_value_s[32]; 1621 int tag_name, tag_value; 1622 /* First operand is the tag name, second is the tag value e.g. 1623 ".mspabi_attribute 4, 2". */ 1624 input_line_pointer = extract_operand (input_line_pointer, tag_name_s, 32); 1625 input_line_pointer = extract_operand (input_line_pointer, tag_value_s, 32); 1626 tag_name = atoi (tag_name_s); 1627 tag_value = atoi (tag_value_s); 1628 /* If the attribute directive is present, the tag_value should never be set 1629 to 0. */ 1630 if (tag_name == 0 || tag_value == 0) 1631 as_bad (_("bad arguments \"%s\" and/or \"%s\" in %s directive"), 1632 tag_name_s, tag_value_s, (attr_type ? ".gnu_attribute" 1633 : ".mspabi_attribute")); 1634 else if (attr_type == 0) 1635 /* Handle .mspabi_attribute. */ 1636 switch (tag_name) 1637 { 1638 case OFBA_MSPABI_Tag_ISA: 1639 switch (tag_value) 1640 { 1641 case OFBA_MSPABI_Val_ISA_MSP430: 1642 if (target_is_430x ()) 1643 as_bad (_("file was compiled for the 430 ISA but the %s ISA is " 1644 "selected"), (target_is_430xv2 () ? "430X" : "430Xv2")); 1645 break; 1646 case OFBA_MSPABI_Val_ISA_MSP430X: 1647 if (!target_is_430x ()) 1648 as_bad (_("file was compiled for the 430X ISA but the 430 ISA is " 1649 "selected")); 1650 break; 1651 default: 1652 as_bad (_("unknown MSPABI build attribute value '%d' for " 1653 "OFBA_MSPABI_Tag_ISA(%d) in .mspabi_attribute directive"), 1654 tag_value, OFBA_MSPABI_Tag_ISA); 1655 break; 1656 } 1657 break; 1658 case OFBA_MSPABI_Tag_Code_Model: 1659 /* Fall through. */ 1660 case OFBA_MSPABI_Tag_Data_Model: 1661 /* FIXME: Might we want to set the memory model to large if the assembly 1662 file has the large model attribute, but -ml has not been passed? */ 1663 switch (tag_value) 1664 { 1665 case OFBA_MSPABI_Val_Code_Model_SMALL: 1666 if (large_model) 1667 as_bad (_("file was compiled for the small memory model, but the " 1668 "large memory model is selected")); 1669 break; 1670 case OFBA_MSPABI_Val_Code_Model_LARGE: 1671 if (!large_model) 1672 as_bad (_("file was compiled for the large memory model, " 1673 "but the small memory model is selected")); 1674 break; 1675 default: 1676 as_bad (_("unknown MSPABI build attribute value '%d' for %s(%d) " 1677 "in .mspabi_attribute directive"), tag_value, 1678 (tag_name == OFBA_MSPABI_Tag_Code_Model 1679 ? "OFBA_MSPABI_Tag_Code_Model" 1680 : "OFBA_MSPABI_Tag_Data_Model"), 1681 (tag_name == OFBA_MSPABI_Tag_Code_Model 1682 ? OFBA_MSPABI_Tag_Code_Model 1683 : OFBA_MSPABI_Tag_Data_Model)); 1684 break; 1685 } 1686 break; 1687 default: 1688 as_bad (_("unknown MSPABI build attribute tag '%d' in " 1689 ".mspabi_attribute directive"), tag_name); 1690 break; 1691 } 1692 else if (attr_type == 1) 1693 /* Handle .gnu_attribute. */ 1694 switch (tag_name) 1695 { 1696 case Tag_GNU_MSP430_Data_Region: 1697 /* This attribute is only applicable in the large memory model. */ 1698 if (!large_model) 1699 break; 1700 switch (tag_value) 1701 { 1702 case Val_GNU_MSP430_Data_Region_Lower: 1703 if (!lower_data_region_only) 1704 as_bad (_("file was compiled assuming all data will be in the " 1705 "lower memory region, but the upper region is in use")); 1706 break; 1707 case Val_GNU_MSP430_Data_Region_Any: 1708 if (lower_data_region_only) 1709 as_bad (_("file was compiled assuming data could be in the upper " 1710 "memory region, but the lower data region is " 1711 "exclusively in use")); 1712 break; 1713 default: 1714 as_bad (_("unknown GNU build attribute value '%d' for " 1715 "Tag_GNU_MSP430_Data_Region(%d) in .gnu_attribute " 1716 "directive"), tag_value, Tag_GNU_MSP430_Data_Region); 1717 } 1718 } 1719 else 1720 as_bad (_("internal: unexpected argument '%d' to msp430_object_attribute"), 1721 attr_type); 1722 } 1723 1724 const pseudo_typeS md_pseudo_table[] = 1725 { 1726 {"arch", msp430_set_arch, OPTION_MMCU}, 1727 {"cpu", msp430_set_arch, OPTION_MCPU}, 1728 {"profiler", msp430_profiler, 0}, 1729 {"section", msp430_section, 0}, 1730 {"section.s", msp430_section, 0}, 1731 {"sect", msp430_section, 0}, 1732 {"sect.s", msp430_section, 0}, 1733 {"pushsection", msp430_section, 1}, 1734 {"refsym", msp430_refsym, 0}, 1735 {"comm", msp430_comm, 0}, 1736 {"lcomm", msp430_lcomm, 0}, 1737 {"mspabi_attribute", msp430_object_attribute, 0}, 1738 {"gnu_attribute", msp430_object_attribute, 1}, 1739 {NULL, NULL, 0} 1740 }; 1741 1742 const char *md_shortopts = "mm:,mP,mQ,ml,mN,mn,my,mY,mu,mU"; 1743 1744 struct option md_longopts[] = 1745 { 1746 {"msilicon-errata", required_argument, NULL, OPTION_SILICON_ERRATA}, 1747 {"msilicon-errata-warn", required_argument, NULL, OPTION_SILICON_ERRATA_WARN}, 1748 {"mmcu", required_argument, NULL, OPTION_MMCU}, 1749 {"mcpu", required_argument, NULL, OPTION_MCPU}, 1750 {"mP", no_argument, NULL, OPTION_POLYMORPHS}, 1751 {"mQ", no_argument, NULL, OPTION_RELAX}, 1752 {"ml", no_argument, NULL, OPTION_LARGE}, 1753 {"mN", no_argument, NULL, OPTION_NO_INTR_NOPS}, 1754 {"mn", no_argument, NULL, OPTION_INTR_NOPS}, 1755 {"mY", no_argument, NULL, OPTION_NO_WARN_INTR_NOPS}, 1756 {"my", no_argument, NULL, OPTION_WARN_INTR_NOPS}, 1757 {"mu", no_argument, NULL, OPTION_UNKNOWN_INTR_NOPS}, 1758 {"mU", no_argument, NULL, OPTION_NO_UNKNOWN_INTR_NOPS}, 1759 {"md", no_argument, NULL, OPTION_MOVE_DATA}, 1760 {"mdata-region", required_argument, NULL, OPTION_DATA_REGION}, 1761 {NULL, no_argument, NULL, 0} 1762 }; 1763 1764 size_t md_longopts_size = sizeof (md_longopts); 1765 1766 void 1767 md_show_usage (FILE * stream) 1768 { 1769 fprintf (stream, 1770 _("MSP430 options:\n" 1771 " -mmcu=<msp430-name> - select microcontroller type\n" 1772 " -mcpu={430|430x|430xv2} - select microcontroller architecture\n")); 1773 fprintf (stream, 1774 _(" -msilicon-errata=<name>[,<name>...] - enable fixups for silicon errata\n" 1775 " -msilicon-errata-warn=<name>[,<name>...] - warn when a fixup might be needed\n" 1776 " supported errata names: cpu4, cpu8, cpu11, cpu12, cpu13, cpu19\n")); 1777 fprintf (stream, 1778 _(" -mQ - enable relaxation at assembly time. DANGEROUS!\n" 1779 " -mP - enable polymorph instructions\n")); 1780 fprintf (stream, 1781 _(" -ml - enable large code model\n")); 1782 fprintf (stream, 1783 _(" -mN - do not insert NOPs after changing interrupts (default)\n")); 1784 fprintf (stream, 1785 _(" -mn - insert a NOP after changing interrupts\n")); 1786 fprintf (stream, 1787 _(" -mY - do not warn about missing NOPs after changing interrupts\n")); 1788 fprintf (stream, 1789 _(" -my - warn about missing NOPs after changing interrupts (default)\n")); 1790 fprintf (stream, 1791 _(" -mU - for an instruction which changes interrupt state, but where it is not\n" 1792 " known how the state is changed, do not warn/insert NOPs\n")); 1793 fprintf (stream, 1794 _(" -mu - for an instruction which changes interrupt state, but where it is not\n" 1795 " known how the state is changed, warn/insert NOPs (default)\n" 1796 " -mn and/or -my are required for this to have any effect\n")); 1797 fprintf (stream, 1798 _(" -md - Force copying of data from ROM to RAM at startup\n")); 1799 fprintf (stream, 1800 _(" -mdata-region={none|lower|upper|either} - select region data will be\n" 1801 " placed in.\n")); 1802 } 1803 1804 symbolS * 1805 md_undefined_symbol (char * name ATTRIBUTE_UNUSED) 1806 { 1807 return NULL; 1808 } 1809 1810 static char * 1811 extract_cmd (char * from, char * to, int limit) 1812 { 1813 int size = 0; 1814 1815 while (*from && ! ISSPACE (*from) && *from != '.' && limit > size) 1816 { 1817 *(to + size) = *from; 1818 from++; 1819 size++; 1820 } 1821 1822 *(to + size) = 0; 1823 1824 return from; 1825 } 1826 1827 const char * 1828 md_atof (int type, char * litP, int * sizeP) 1829 { 1830 return ieee_md_atof (type, litP, sizeP, FALSE); 1831 } 1832 1833 void 1834 md_begin (void) 1835 { 1836 struct msp430_opcode_s * opcode; 1837 msp430_hash = hash_new (); 1838 1839 for (opcode = msp430_opcodes; opcode->name; opcode++) 1840 hash_insert (msp430_hash, opcode->name, (char *) opcode); 1841 1842 bfd_set_arch_mach (stdoutput, TARGET_ARCH, 1843 target_is_430x () ? bfd_mach_msp430x : bfd_mach_msp11); 1844 1845 /* Set linkrelax here to avoid fixups in most sections. */ 1846 linkrelax = 1; 1847 } 1848 1849 static inline bfd_boolean 1850 is_regname_end (char c) 1851 { 1852 return (c == 0 || ! ISALNUM (c)); 1853 } 1854 1855 /* Returns the register number equivalent to the string T. 1856 Returns -1 if there is no such register. 1857 Skips a leading 'r' or 'R' character if there is one. 1858 Handles the register aliases PC and SP. */ 1859 1860 static signed int 1861 check_reg (char * t) 1862 { 1863 char * endt; 1864 signed long int val; 1865 1866 if (t == NULL || t[0] == 0) 1867 return -1; 1868 1869 if (*t == 'r' || *t == 'R') 1870 ++t; 1871 1872 if (strncasecmp (t, "pc", 2) == 0 && is_regname_end (t[2])) 1873 return 0; 1874 1875 if (strncasecmp (t, "sp", 2) == 0 && is_regname_end (t[2])) 1876 return 1; 1877 1878 if (strncasecmp (t, "sr", 2) == 0 && is_regname_end (t[2])) 1879 return 2; 1880 1881 if (*t == '0' && is_regname_end (t[1])) 1882 return 0; 1883 1884 val = strtol (t, & endt, 0); 1885 1886 if (val < 1 || val > 15) 1887 return -1; 1888 1889 if (is_regname_end (*endt)) 1890 return val; 1891 1892 return -1; 1893 } 1894 1895 static int 1896 msp430_srcoperand (struct msp430_operand_s * op, 1897 char * l, 1898 int bin, 1899 bfd_boolean * imm_op, 1900 bfd_boolean allow_20bit_values, 1901 bfd_boolean constants_allowed) 1902 { 1903 char * end; 1904 char *__tl = l; 1905 1906 /* Check if an immediate #VALUE. The hash sign should be only at the beginning! */ 1907 if (*l == '#') 1908 { 1909 char *h = l; 1910 int vshift = -1; 1911 int rval = 0; 1912 /* Use all parts of the constant expression by default. */ 1913 enum msp430_expp_e expp = MSP_EXPP_ALL; 1914 1915 /* Check if there is: 1916 llo(x) - least significant 16 bits, x &= 0xffff 1917 lhi(x) - x = (x >> 16) & 0xffff, 1918 hlo(x) - x = (x >> 32) & 0xffff, 1919 hhi(x) - x = (x >> 48) & 0xffff 1920 The value _MUST_ be an immediate expression: #hlo(1231231231). */ 1921 1922 *imm_op = TRUE; 1923 1924 if (strncasecmp (h, "#llo(", 5) == 0) 1925 { 1926 vshift = 0; 1927 rval = 3; 1928 expp = MSP_EXPP_LLO; 1929 } 1930 else if (strncasecmp (h, "#lhi(", 5) == 0) 1931 { 1932 vshift = 1; 1933 rval = 3; 1934 expp = MSP_EXPP_LHI; 1935 } 1936 else if (strncasecmp (h, "#hlo(", 5) == 0) 1937 { 1938 vshift = 2; 1939 rval = 3; 1940 expp = MSP_EXPP_HLO; 1941 } 1942 else if (strncasecmp (h, "#hhi(", 5) == 0) 1943 { 1944 vshift = 3; 1945 rval = 3; 1946 expp = MSP_EXPP_HHI; 1947 } 1948 else if (strncasecmp (h, "#lo(", 4) == 0) 1949 { 1950 vshift = 0; 1951 rval = 2; 1952 expp = MSP_EXPP_LO; 1953 } 1954 else if (strncasecmp (h, "#hi(", 4) == 0) 1955 { 1956 vshift = 1; 1957 rval = 2; 1958 expp = MSP_EXPP_HI; 1959 } 1960 1961 op->reg = 0; /* Reg PC. */ 1962 op->am = 3; 1963 op->ol = 1; /* Immediate will follow an instruction. */ 1964 __tl = h + 1 + rval; 1965 op->mode = OP_EXP; 1966 op->vshift = vshift; 1967 op->expp = expp; 1968 1969 end = parse_exp (__tl, &(op->exp)); 1970 if (end != NULL && *end != 0 && *end != ')' ) 1971 { 1972 as_bad (_("extra characters '%s' at end of immediate expression '%s'"), end, l); 1973 return 1; 1974 } 1975 if (op->exp.X_op == O_constant) 1976 { 1977 int x = op->exp.X_add_number; 1978 1979 if (vshift == 0) 1980 { 1981 x = x & 0xffff; 1982 op->exp.X_add_number = x; 1983 } 1984 else if (vshift == 1) 1985 { 1986 x = (x >> 16) & 0xffff; 1987 op->exp.X_add_number = x; 1988 op->vshift = 0; 1989 } 1990 else if (vshift > 1) 1991 { 1992 if (x < 0) 1993 op->exp.X_add_number = -1; 1994 else 1995 op->exp.X_add_number = 0; /* Nothing left. */ 1996 x = op->exp.X_add_number; 1997 op->vshift = 0; 1998 } 1999 2000 if (allow_20bit_values) 2001 { 2002 if (op->exp.X_add_number > 0xfffff || op->exp.X_add_number < -524288) 2003 { 2004 as_bad (_("value 0x%x out of extended range."), x); 2005 return 1; 2006 } 2007 } 2008 else if (op->exp.X_add_number > 65535 || op->exp.X_add_number < -32768) 2009 { 2010 as_bad (_("value %d out of range. Use #lo() or #hi()"), x); 2011 return 1; 2012 } 2013 2014 /* Now check constants. */ 2015 /* Substitute register mode with a constant generator if applicable. */ 2016 2017 if (!allow_20bit_values) 2018 x = (short) x; /* Extend sign. */ 2019 2020 if (! constants_allowed) 2021 ; 2022 else if (x == 0) 2023 { 2024 op->reg = 3; 2025 op->am = 0; 2026 op->ol = 0; 2027 op->mode = OP_REG; 2028 } 2029 else if (x == 1) 2030 { 2031 op->reg = 3; 2032 op->am = 1; 2033 op->ol = 0; 2034 op->mode = OP_REG; 2035 } 2036 else if (x == 2) 2037 { 2038 op->reg = 3; 2039 op->am = 2; 2040 op->ol = 0; 2041 op->mode = OP_REG; 2042 } 2043 else if (x == -1) 2044 { 2045 op->reg = 3; 2046 op->am = 3; 2047 op->ol = 0; 2048 op->mode = OP_REG; 2049 } 2050 else if (x == 4) 2051 { 2052 if (bin == 0x1200 && ! target_is_430x ()) 2053 { 2054 /* CPU4: The shorter form of PUSH #4 is not supported on MSP430. */ 2055 if (silicon_errata_warn & SILICON_ERRATA_CPU4) 2056 as_warn (_("cpu4: not converting PUSH #4 to shorter form")); 2057 /* No need to check silicon_errata_fixes - this fix is always implemented. */ 2058 } 2059 else 2060 { 2061 op->reg = 2; 2062 op->am = 2; 2063 op->ol = 0; 2064 op->mode = OP_REG; 2065 } 2066 } 2067 else if (x == 8) 2068 { 2069 if (bin == 0x1200 && ! target_is_430x ()) 2070 { 2071 /* CPU4: The shorter form of PUSH #8 is not supported on MSP430. */ 2072 if (silicon_errata_warn & SILICON_ERRATA_CPU4) 2073 as_warn (_("cpu4: not converting PUSH #8 to shorter form")); 2074 } 2075 else 2076 { 2077 op->reg = 2; 2078 op->am = 3; 2079 op->ol = 0; 2080 op->mode = OP_REG; 2081 } 2082 } 2083 } 2084 else if (op->exp.X_op == O_symbol) 2085 { 2086 if (vshift > 1) 2087 as_bad (_("error: unsupported #foo() directive used on symbol")); 2088 op->mode = OP_EXP; 2089 } 2090 else if (op->exp.X_op == O_big) 2091 { 2092 short x; 2093 2094 if (vshift != -1) 2095 { 2096 op->exp.X_op = O_constant; 2097 op->exp.X_add_number = 0xffff & generic_bignum[vshift]; 2098 x = op->exp.X_add_number; 2099 op->vshift = 0; 2100 } 2101 else 2102 { 2103 as_bad (_ 2104 ("unknown expression in operand %s. Use #llo(), #lhi(), #hlo() or #hhi()"), 2105 l); 2106 return 1; 2107 } 2108 2109 if (x == 0) 2110 { 2111 op->reg = 3; 2112 op->am = 0; 2113 op->ol = 0; 2114 op->mode = OP_REG; 2115 } 2116 else if (x == 1) 2117 { 2118 op->reg = 3; 2119 op->am = 1; 2120 op->ol = 0; 2121 op->mode = OP_REG; 2122 } 2123 else if (x == 2) 2124 { 2125 op->reg = 3; 2126 op->am = 2; 2127 op->ol = 0; 2128 op->mode = OP_REG; 2129 } 2130 else if (x == -1) 2131 { 2132 op->reg = 3; 2133 op->am = 3; 2134 op->ol = 0; 2135 op->mode = OP_REG; 2136 } 2137 else if (x == 4) 2138 { 2139 op->reg = 2; 2140 op->am = 2; 2141 op->ol = 0; 2142 op->mode = OP_REG; 2143 } 2144 else if (x == 8) 2145 { 2146 op->reg = 2; 2147 op->am = 3; 2148 op->ol = 0; 2149 op->mode = OP_REG; 2150 } 2151 } 2152 /* Redundant (yet) check. */ 2153 else if (op->exp.X_op == O_register) 2154 as_bad 2155 (_("Registers cannot be used within immediate expression [%s]"), l); 2156 else 2157 as_bad (_("unknown operand %s"), l); 2158 2159 return 0; 2160 } 2161 2162 /* Check if absolute &VALUE (assume that we can construct something like ((a&b)<<7 + 25). */ 2163 if (*l == '&') 2164 { 2165 char *h = l; 2166 2167 op->reg = 2; /* Reg 2 in absolute addr mode. */ 2168 op->am = 1; /* Mode As == 01 bin. */ 2169 op->ol = 1; /* Immediate value followed by instruction. */ 2170 __tl = h + 1; 2171 end = parse_exp (__tl, &(op->exp)); 2172 if (end != NULL && *end != 0) 2173 { 2174 as_bad (_("extra characters '%s' at the end of absolute operand '%s'"), end, l); 2175 return 1; 2176 } 2177 op->mode = OP_EXP; 2178 op->vshift = 0; 2179 op->expp = MSP_EXPP_ALL; 2180 if (op->exp.X_op == O_constant) 2181 { 2182 int x = op->exp.X_add_number; 2183 2184 if (allow_20bit_values) 2185 { 2186 if (x > 0xfffff || x < -(0x7ffff)) 2187 { 2188 as_bad (_("value 0x%x out of extended range."), x); 2189 return 1; 2190 } 2191 } 2192 else if (x > 65535 || x < -32768) 2193 { 2194 as_bad (_("value out of range: 0x%x"), x); 2195 return 1; 2196 } 2197 } 2198 else if (op->exp.X_op == O_symbol) 2199 ; 2200 else 2201 { 2202 /* Redundant (yet) check. */ 2203 if (op->exp.X_op == O_register) 2204 as_bad 2205 (_("Registers cannot be used within absolute expression [%s]"), l); 2206 else 2207 as_bad (_("unknown expression in operand %s"), l); 2208 return 1; 2209 } 2210 return 0; 2211 } 2212 2213 /* Check if indirect register mode @Rn / postincrement @Rn+. */ 2214 if (*l == '@') 2215 { 2216 char *t = l; 2217 char *m = strchr (l, '+'); 2218 2219 if (t != l) 2220 { 2221 as_bad (_("unknown addressing mode %s"), l); 2222 return 1; 2223 } 2224 2225 t++; 2226 2227 if ((op->reg = check_reg (t)) == -1) 2228 { 2229 as_bad (_("Bad register name %s"), t); 2230 return 1; 2231 } 2232 2233 op->mode = OP_REG; 2234 op->am = m ? 3 : 2; 2235 op->ol = 0; 2236 2237 /* PC cannot be used in indirect addressing. */ 2238 if (target_is_430xv2 () && op->reg == 0) 2239 { 2240 as_bad (_("cannot use indirect addressing with the PC")); 2241 return 1; 2242 } 2243 2244 return 0; 2245 } 2246 2247 /* Check if register indexed X(Rn). */ 2248 do 2249 { 2250 char *h = strrchr (l, '('); 2251 char *m = strrchr (l, ')'); 2252 char *t; 2253 2254 *imm_op = TRUE; 2255 2256 if (!h) 2257 break; 2258 if (!m) 2259 { 2260 as_bad (_("')' required")); 2261 return 1; 2262 } 2263 2264 t = h; 2265 op->am = 1; 2266 op->ol = 1; 2267 2268 /* Extract a register. */ 2269 if ((op->reg = check_reg (t + 1)) == -1) 2270 { 2271 as_bad (_ 2272 ("unknown operator %s. Did you mean X(Rn) or #[hl][hl][oi](CONST) ?"), 2273 l); 2274 return 1; 2275 } 2276 2277 if (op->reg == 2) 2278 { 2279 as_bad (_("r2 should not be used in indexed addressing mode")); 2280 return 1; 2281 } 2282 2283 /* Extract constant. */ 2284 __tl = l; 2285 *h = 0; 2286 op->mode = OP_EXP; 2287 op->vshift = 0; 2288 op->expp = MSP_EXPP_ALL; 2289 end = parse_exp (__tl, &(op->exp)); 2290 if (end != NULL && *end != 0) 2291 { 2292 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l); 2293 return 1; 2294 } 2295 if (op->exp.X_op == O_constant) 2296 { 2297 int x = op->exp.X_add_number; 2298 2299 if (allow_20bit_values) 2300 { 2301 if (x > 0xfffff || x < - (0x7ffff)) 2302 { 2303 as_bad (_("value 0x%x out of extended range."), x); 2304 return 1; 2305 } 2306 } 2307 else if (x > 65535 || x < -32768) 2308 { 2309 as_bad (_("value out of range: 0x%x"), x); 2310 return 1; 2311 } 2312 2313 if (x == 0) 2314 { 2315 op->mode = OP_REG; 2316 op->am = 2; 2317 op->ol = 0; 2318 return 0; 2319 } 2320 2321 if (op->reg == 1 && (x & 1)) 2322 { 2323 if (silicon_errata_fix & SILICON_ERRATA_CPU8) 2324 as_bad (_("CPU8: Stack pointer accessed with an odd offset")); 2325 else if (silicon_errata_warn & SILICON_ERRATA_CPU8) 2326 as_warn (_("CPU8: Stack pointer accessed with an odd offset")); 2327 } 2328 } 2329 else if (op->exp.X_op == O_symbol) 2330 ; 2331 else 2332 { 2333 /* Redundant (yet) check. */ 2334 if (op->exp.X_op == O_register) 2335 as_bad 2336 (_("Registers cannot be used as a prefix of indexed expression [%s]"), l); 2337 else 2338 as_bad (_("unknown expression in operand %s"), l); 2339 return 1; 2340 } 2341 2342 return 0; 2343 } 2344 while (0); 2345 2346 /* Possibly register mode 'mov r1,r2'. */ 2347 if ((op->reg = check_reg (l)) != -1) 2348 { 2349 op->mode = OP_REG; 2350 op->am = 0; 2351 op->ol = 0; 2352 return 0; 2353 } 2354 2355 /* Symbolic mode 'mov a, b' == 'mov x(pc), y(pc)'. */ 2356 op->mode = OP_EXP; 2357 op->reg = 0; /* PC relative... be careful. */ 2358 /* An expression starting with a minus sign is a constant, not an address. */ 2359 op->am = (*l == '-' ? 3 : 1); 2360 op->ol = 1; 2361 op->vshift = 0; 2362 op->expp = MSP_EXPP_ALL; 2363 __tl = l; 2364 end = parse_exp (__tl, &(op->exp)); 2365 if (end != NULL && * end != 0) 2366 { 2367 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l); 2368 return 1; 2369 } 2370 return 0; 2371 } 2372 2373 2374 static int 2375 msp430_dstoperand (struct msp430_operand_s * op, 2376 char * l, 2377 int bin, 2378 bfd_boolean allow_20bit_values, 2379 bfd_boolean constants_allowed) 2380 { 2381 int dummy; 2382 int ret = msp430_srcoperand (op, l, bin, & dummy, 2383 allow_20bit_values, 2384 constants_allowed); 2385 2386 if (ret) 2387 return ret; 2388 2389 if (op->am == 2) 2390 { 2391 char *__tl = (char *) "0"; 2392 2393 op->mode = OP_EXP; 2394 op->am = 1; 2395 op->ol = 1; 2396 op->vshift = 0; 2397 op->expp = MSP_EXPP_ALL; 2398 (void) parse_exp (__tl, &(op->exp)); 2399 2400 if (op->exp.X_op != O_constant || op->exp.X_add_number != 0) 2401 { 2402 as_bad (_("Internal bug. Try to use 0(r%d) instead of @r%d"), 2403 op->reg, op->reg); 2404 return 1; 2405 } 2406 return 0; 2407 } 2408 2409 if (op->am > 1) 2410 { 2411 as_bad (_ 2412 ("this addressing mode is not applicable for destination operand")); 2413 return 1; 2414 } 2415 return 0; 2416 } 2417 2418 /* Attempt to encode a MOVA instruction with the given operands. 2419 Returns the length of the encoded instruction if successful 2420 or 0 upon failure. If the encoding fails, an error message 2421 will be returned if a pointer is provided. */ 2422 2423 static int 2424 try_encode_mova (bfd_boolean imm_op, 2425 int bin, 2426 struct msp430_operand_s * op1, 2427 struct msp430_operand_s * op2, 2428 const char ** error_message_return) 2429 { 2430 short ZEROS = 0; 2431 char *frag; 2432 int where; 2433 2434 /* Only a restricted subset of the normal MSP430 addressing modes 2435 are supported here, so check for the ones that are allowed. */ 2436 if (imm_op) 2437 { 2438 if (op1->mode == OP_EXP) 2439 { 2440 if (op2->mode != OP_REG) 2441 { 2442 if (error_message_return != NULL) 2443 * error_message_return = _("expected register as second argument of %s"); 2444 return 0; 2445 } 2446 2447 if (op1->am == 3) 2448 { 2449 /* MOVA #imm20, Rdst. */ 2450 bin |= 0x80 | op2->reg; 2451 frag = frag_more (4); 2452 where = frag - frag_now->fr_literal; 2453 if (op1->exp.X_op == O_constant) 2454 { 2455 bin |= ((op1->exp.X_add_number >> 16) & 0xf) << 8; 2456 bfd_putl16 ((bfd_vma) bin, frag); 2457 bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2); 2458 } 2459 else 2460 { 2461 bfd_putl16 ((bfd_vma) bin, frag); 2462 fix_new_exp (frag_now, where, 4, &(op1->exp), FALSE, 2463 BFD_RELOC_MSP430X_ABS20_ADR_SRC); 2464 bfd_putl16 ((bfd_vma) ZEROS, frag + 2); 2465 } 2466 2467 return 4; 2468 } 2469 else if (op1->am == 1) 2470 { 2471 /* MOVA z16(Rsrc), Rdst. */ 2472 bin |= 0x30 | (op1->reg << 8) | op2->reg; 2473 frag = frag_more (4); 2474 where = frag - frag_now->fr_literal; 2475 bfd_putl16 ((bfd_vma) bin, frag); 2476 if (op1->exp.X_op == O_constant) 2477 { 2478 if (op1->exp.X_add_number > 0xffff 2479 || op1->exp.X_add_number < -(0x7fff)) 2480 { 2481 if (error_message_return != NULL) 2482 * error_message_return = _("index value too big for %s"); 2483 return 0; 2484 } 2485 bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2); 2486 } 2487 else 2488 { 2489 bfd_putl16 ((bfd_vma) ZEROS, frag + 2); 2490 fix_new_exp (frag_now, where + 2, 2, &(op1->exp), FALSE, 2491 op1->reg == 0 ? 2492 BFD_RELOC_MSP430X_PCR16 : 2493 BFD_RELOC_MSP430X_ABS16); 2494 } 2495 return 4; 2496 } 2497 2498 if (error_message_return != NULL) 2499 * error_message_return = _("unexpected addressing mode for %s"); 2500 return 0; 2501 } 2502 else if (op1->am == 0) 2503 { 2504 /* MOVA Rsrc, ... */ 2505 if (op2->mode == OP_REG) 2506 { 2507 bin |= 0xc0 | (op1->reg << 8) | op2->reg; 2508 frag = frag_more (2); 2509 where = frag - frag_now->fr_literal; 2510 bfd_putl16 ((bfd_vma) bin, frag); 2511 return 2; 2512 } 2513 else if (op2->am == 1) 2514 { 2515 if (op2->reg == 2) 2516 { 2517 /* MOVA Rsrc, &abs20. */ 2518 bin |= 0x60 | (op1->reg << 8); 2519 frag = frag_more (4); 2520 where = frag - frag_now->fr_literal; 2521 if (op2->exp.X_op == O_constant) 2522 { 2523 bin |= (op2->exp.X_add_number >> 16) & 0xf; 2524 bfd_putl16 ((bfd_vma) bin, frag); 2525 bfd_putl16 (op2->exp.X_add_number & 0xffff, frag + 2); 2526 } 2527 else 2528 { 2529 bfd_putl16 ((bfd_vma) bin, frag); 2530 bfd_putl16 ((bfd_vma) ZEROS, frag + 2); 2531 fix_new_exp (frag_now, where, 4, &(op2->exp), FALSE, 2532 BFD_RELOC_MSP430X_ABS20_ADR_DST); 2533 } 2534 return 4; 2535 } 2536 2537 /* MOVA Rsrc, z16(Rdst). */ 2538 bin |= 0x70 | (op1->reg << 8) | op2->reg; 2539 frag = frag_more (4); 2540 where = frag - frag_now->fr_literal; 2541 bfd_putl16 ((bfd_vma) bin, frag); 2542 if (op2->exp.X_op == O_constant) 2543 { 2544 if (op2->exp.X_add_number > 0xffff 2545 || op2->exp.X_add_number < -(0x7fff)) 2546 { 2547 if (error_message_return != NULL) 2548 * error_message_return = _("index value too big for %s"); 2549 return 0; 2550 } 2551 bfd_putl16 (op2->exp.X_add_number & 0xffff, frag + 2); 2552 } 2553 else 2554 { 2555 bfd_putl16 ((bfd_vma) ZEROS, frag + 2); 2556 fix_new_exp (frag_now, where + 2, 2, &(op2->exp), FALSE, 2557 op2->reg == 0 ? 2558 BFD_RELOC_MSP430X_PCR16 : 2559 BFD_RELOC_MSP430X_ABS16); 2560 } 2561 return 4; 2562 } 2563 2564 if (error_message_return != NULL) 2565 * error_message_return = _("unexpected addressing mode for %s"); 2566 return 0; 2567 } 2568 } 2569 2570 /* imm_op == FALSE. */ 2571 2572 if (op1->reg == 2 && op1->am == 1 && op1->mode == OP_EXP) 2573 { 2574 /* MOVA &abs20, Rdst. */ 2575 if (op2->mode != OP_REG) 2576 { 2577 if (error_message_return != NULL) 2578 * error_message_return = _("expected register as second argument of %s"); 2579 return 0; 2580 } 2581 2582 if (op2->reg == 2 || op2->reg == 3) 2583 { 2584 if (error_message_return != NULL) 2585 * error_message_return = _("constant generator destination register found in %s"); 2586 return 0; 2587 } 2588 2589 bin |= 0x20 | op2->reg; 2590 frag = frag_more (4); 2591 where = frag - frag_now->fr_literal; 2592 if (op1->exp.X_op == O_constant) 2593 { 2594 bin |= ((op1->exp.X_add_number >> 16) & 0xf) << 8; 2595 bfd_putl16 ((bfd_vma) bin, frag); 2596 bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2); 2597 } 2598 else 2599 { 2600 bfd_putl16 ((bfd_vma) bin, frag); 2601 bfd_putl16 ((bfd_vma) ZEROS, frag + 2); 2602 fix_new_exp (frag_now, where, 4, &(op1->exp), FALSE, 2603 BFD_RELOC_MSP430X_ABS20_ADR_SRC); 2604 } 2605 return 4; 2606 } 2607 else if (op1->mode == OP_REG) 2608 { 2609 if (op1->am == 3) 2610 { 2611 /* MOVA @Rsrc+, Rdst. */ 2612 if (op2->mode != OP_REG) 2613 { 2614 if (error_message_return != NULL) 2615 * error_message_return = _("expected register as second argument of %s"); 2616 return 0; 2617 } 2618 2619 if (op2->reg == 2 || op2->reg == 3) 2620 { 2621 if (error_message_return != NULL) 2622 * error_message_return = _("constant generator destination register found in %s"); 2623 return 0; 2624 } 2625 2626 if (op1->reg == 2 || op1->reg == 3) 2627 { 2628 if (error_message_return != NULL) 2629 * error_message_return = _("constant generator source register found in %s"); 2630 return 0; 2631 } 2632 2633 bin |= 0x10 | (op1->reg << 8) | op2->reg; 2634 frag = frag_more (2); 2635 where = frag - frag_now->fr_literal; 2636 bfd_putl16 ((bfd_vma) bin, frag); 2637 return 2; 2638 } 2639 else if (op1->am == 2) 2640 { 2641 /* MOVA @Rsrc,Rdst */ 2642 if (op2->mode != OP_REG) 2643 { 2644 if (error_message_return != NULL) 2645 * error_message_return = _("expected register as second argument of %s"); 2646 return 0; 2647 } 2648 2649 if (op2->reg == 2 || op2->reg == 3) 2650 { 2651 if (error_message_return != NULL) 2652 * error_message_return = _("constant generator destination register found in %s"); 2653 return 0; 2654 } 2655 2656 if (op1->reg == 2 || op1->reg == 3) 2657 { 2658 if (error_message_return != NULL) 2659 * error_message_return = _("constant generator source register found in %s"); 2660 return 0; 2661 } 2662 2663 bin |= (op1->reg << 8) | op2->reg; 2664 frag = frag_more (2); 2665 where = frag - frag_now->fr_literal; 2666 bfd_putl16 ((bfd_vma) bin, frag); 2667 return 2; 2668 } 2669 } 2670 2671 if (error_message_return != NULL) 2672 * error_message_return = _("unexpected addressing mode for %s"); 2673 2674 return 0; 2675 } 2676 2677 #define NOP_CHECK_INTERRUPT (1 << 0) 2678 #define NOP_CHECK_CPU12 (1 << 1) 2679 #define NOP_CHECK_CPU19 (1 << 2) 2680 2681 static signed int check_for_nop = 0; 2682 2683 #define is_opcode(NAME) (strcmp (opcode->name, NAME) == 0) 2684 2685 /* is_{e,d}int only check the explicit enabling/disabling of interrupts. 2686 For MOV insns, more sophisticated processing is needed to determine if they 2687 result in enabling/disabling interrupts. */ 2688 #define is_dint(OPCODE, BIN) ((strcmp (OPCODE, "dint") == 0) \ 2689 || ((strcmp (OPCODE, "bic") == 0) \ 2690 && BIN == 0xc232) \ 2691 || ((strcmp (OPCODE, "clr") == 0) \ 2692 && BIN == 0x4302)) 2693 2694 #define is_eint(OPCODE, BIN) ((strcmp (OPCODE, "eint") == 0) \ 2695 || ((strcmp (OPCODE, "bis") == 0) \ 2696 && BIN == 0xd232)) 2697 2698 const char * const INSERT_NOP_BEFORE_EINT = "NOP inserted here, before an interrupt enable instruction"; 2699 const char * const INSERT_NOP_AFTER_DINT = "NOP inserted here, after an interrupt disable instruction"; 2700 const char * const INSERT_NOP_AFTER_EINT = "NOP inserted here, after an interrupt enable instruction"; 2701 const char * const INSERT_NOP_BEFORE_UNKNOWN = "NOP inserted here, before this interrupt state change"; 2702 const char * const INSERT_NOP_AFTER_UNKNOWN ="NOP inserted here, after the instruction that changed interrupt state"; 2703 const char * const INSERT_NOP_AT_EOF = "NOP inserted after the interrupt state change at the end of the file"; 2704 2705 const char * const WARN_NOP_BEFORE_EINT = "a NOP might be needed here, before an interrupt enable instruction"; 2706 const char * const WARN_NOP_AFTER_DINT = "a NOP might be needed here, after an interrupt disable instruction"; 2707 const char * const WARN_NOP_AFTER_EINT = "a NOP might be needed here, after an interrupt enable instruction"; 2708 const char * const WARN_NOP_BEFORE_UNKNOWN = "a NOP might be needed here, before this interrupt state change"; 2709 const char * const WARN_NOP_AFTER_UNKNOWN = "a NOP might also be needed here, after the instruction that changed interrupt state"; 2710 const char * const WARN_NOP_AT_EOF = "a NOP might be needed after the interrupt state change at the end of the file"; 2711 2712 static void 2713 gen_nop (void) 2714 { 2715 char *frag; 2716 frag = frag_more (2); 2717 bfd_putl16 ((bfd_vma) 0x4303 /* NOP */, frag); 2718 dwarf2_emit_insn (2); 2719 } 2720 2721 /* Insert/inform about adding a NOP if this insn enables interrupts. */ 2722 2723 static void 2724 warn_eint_nop (bfd_boolean prev_insn_is_nop, bfd_boolean prev_insn_is_dint) 2725 { 2726 if (prev_insn_is_nop 2727 /* If the last insn was a DINT, we will have already warned that a NOP is 2728 required after it. */ 2729 || prev_insn_is_dint 2730 /* 430 ISA does not require a NOP before EINT. */ 2731 || (! target_is_430x ())) 2732 return; 2733 2734 if (gen_interrupt_nops) 2735 { 2736 gen_nop (); 2737 if (warn_interrupt_nops) 2738 as_warn (_(INSERT_NOP_BEFORE_EINT)); 2739 } 2740 else if (warn_interrupt_nops) 2741 as_warn (_(WARN_NOP_BEFORE_EINT)); 2742 } 2743 2744 /* Use when unsure what effect the insn will have on the interrupt status, 2745 to insert/warn about adding a NOP before the current insn. */ 2746 2747 static void 2748 warn_unsure_interrupt (bfd_boolean prev_insn_is_nop, 2749 bfd_boolean prev_insn_is_dint) 2750 { 2751 if (prev_insn_is_nop 2752 /* If the last insn was a DINT, we will have already warned that a NOP is 2753 required after it. */ 2754 || prev_insn_is_dint 2755 /* 430 ISA does not require a NOP before EINT or DINT. */ 2756 || (! target_is_430x ())) 2757 return; 2758 2759 if (gen_interrupt_nops) 2760 { 2761 gen_nop (); 2762 if (warn_interrupt_nops) 2763 as_warn (_(INSERT_NOP_BEFORE_UNKNOWN)); 2764 } 2765 else if (warn_interrupt_nops) 2766 as_warn (_(WARN_NOP_BEFORE_UNKNOWN)); 2767 } 2768 2769 /* Parse instruction operands. 2770 Return binary opcode. */ 2771 2772 static unsigned int 2773 msp430_operands (struct msp430_opcode_s * opcode, char * line) 2774 { 2775 int bin = opcode->bin_opcode; /* Opcode mask. */ 2776 int insn_length = 0; 2777 char l1[MAX_OP_LEN], l2[MAX_OP_LEN]; 2778 char *frag; 2779 char *end; 2780 int where; 2781 struct msp430_operand_s op1, op2; 2782 int res = 0; 2783 static short ZEROS = 0; 2784 bfd_boolean byte_op, imm_op; 2785 int op_length = 0; 2786 int fmt; 2787 int extended = 0x1800; 2788 bfd_boolean extended_op = FALSE; 2789 bfd_boolean addr_op; 2790 const char * error_message; 2791 static signed int repeat_count = 0; 2792 static bfd_boolean prev_insn_is_nop = FALSE; 2793 static bfd_boolean prev_insn_is_dint = FALSE; 2794 static bfd_boolean prev_insn_is_eint = FALSE; 2795 /* We might decide before the end of the function that the current insn is 2796 equivalent to DINT/EINT. */ 2797 bfd_boolean this_insn_is_dint = FALSE; 2798 bfd_boolean this_insn_is_eint = FALSE; 2799 bfd_boolean fix_emitted; 2800 2801 /* Opcode is the one from opcodes table 2802 line contains something like 2803 [.w] @r2+, 5(R1) 2804 or 2805 .b @r2+, 5(R1). */ 2806 2807 byte_op = FALSE; 2808 addr_op = FALSE; 2809 if (*line == '.') 2810 { 2811 bfd_boolean check = FALSE; 2812 ++ line; 2813 2814 switch (TOLOWER (* line)) 2815 { 2816 case 'b': 2817 /* Byte operation. */ 2818 bin |= BYTE_OPERATION; 2819 byte_op = TRUE; 2820 check = TRUE; 2821 break; 2822 2823 case 'a': 2824 /* "Address" ops work on 20-bit values. */ 2825 addr_op = TRUE; 2826 bin |= BYTE_OPERATION; 2827 check = TRUE; 2828 break; 2829 2830 case 'w': 2831 /* Word operation - this is the default. */ 2832 check = TRUE; 2833 break; 2834 2835 case 0: 2836 case ' ': 2837 case '\n': 2838 case '\r': 2839 as_warn (_("no size modifier after period, .w assumed")); 2840 break; 2841 2842 default: 2843 as_bad (_("unrecognised instruction size modifier .%c"), 2844 * line); 2845 return 0; 2846 } 2847 2848 if (check) 2849 { 2850 ++ line; 2851 2852 } 2853 } 2854 2855 if (*line && ! ISSPACE (*line)) 2856 { 2857 as_bad (_("junk found after instruction: %s.%s"), 2858 opcode->name, line); 2859 return 0; 2860 } 2861 2862 /* Catch the case where the programmer has used a ".a" size modifier on an 2863 instruction that does not support it. Look for an alternative extended 2864 instruction that has the same name without the period. Eg: "add.a" 2865 becomes "adda". Although this not an officially supported way of 2866 specifying instruction aliases other MSP430 assemblers allow it. So we 2867 support it for compatibility purposes. */ 2868 if (addr_op && opcode->fmt >= 0) 2869 { 2870 const char * old_name = opcode->name; 2871 char real_name[32]; 2872 2873 sprintf (real_name, "%sa", old_name); 2874 opcode = hash_find (msp430_hash, real_name); 2875 if (opcode == NULL) 2876 { 2877 as_bad (_("instruction %s.a does not exist"), old_name); 2878 return 0; 2879 } 2880 #if 0 /* Enable for debugging. */ 2881 as_warn ("treating %s.a as %s", old_name, real_name); 2882 #endif 2883 addr_op = FALSE; 2884 bin = opcode->bin_opcode; 2885 } 2886 2887 if (opcode->fmt != -1 2888 && opcode->insn_opnumb 2889 && (!*line || *line == '\n')) 2890 { 2891 as_bad (ngettext ("instruction %s requires %d operand", 2892 "instruction %s requires %d operands", 2893 opcode->insn_opnumb), 2894 opcode->name, opcode->insn_opnumb); 2895 return 0; 2896 } 2897 2898 memset (l1, 0, sizeof (l1)); 2899 memset (l2, 0, sizeof (l2)); 2900 memset (&op1, 0, sizeof (op1)); 2901 memset (&op2, 0, sizeof (op2)); 2902 2903 imm_op = FALSE; 2904 2905 if ((fmt = opcode->fmt) < 0) 2906 { 2907 if (! target_is_430x ()) 2908 { 2909 as_bad (_("instruction %s requires MSP430X mcu"), 2910 opcode->name); 2911 return 0; 2912 } 2913 2914 fmt = (-fmt) - 1; 2915 extended_op = TRUE; 2916 } 2917 2918 if (repeat_count) 2919 { 2920 /* If requested set the extended instruction repeat count. */ 2921 if (extended_op) 2922 { 2923 if (repeat_count > 0) 2924 extended |= (repeat_count - 1); 2925 else 2926 extended |= (1 << 7) | (- repeat_count); 2927 } 2928 else 2929 as_bad (_("unable to repeat %s insn"), opcode->name); 2930 2931 repeat_count = 0; 2932 } 2933 2934 /* The previous instruction set this flag if it wants to check if this insn 2935 is a NOP. */ 2936 if (check_for_nop) 2937 { 2938 if (! is_opcode ("nop")) 2939 { 2940 do 2941 { 2942 switch (check_for_nop & - check_for_nop) 2943 { 2944 case NOP_CHECK_INTERRUPT: 2945 /* NOP_CHECK_INTERRUPT rules: 2946 1. 430 and 430x ISA require a NOP after DINT. 2947 2. Only the 430x ISA requires NOP before EINT (this has 2948 been dealt with in the previous call to this function). 2949 3. Only the 430x ISA requires NOP after every EINT. 2950 CPU42 errata. */ 2951 if (gen_interrupt_nops || warn_interrupt_nops) 2952 { 2953 if (prev_insn_is_dint) 2954 { 2955 if (gen_interrupt_nops) 2956 { 2957 gen_nop (); 2958 if (warn_interrupt_nops) 2959 as_warn (_(INSERT_NOP_AFTER_DINT)); 2960 } 2961 else 2962 as_warn (_(WARN_NOP_AFTER_DINT)); 2963 } 2964 else if (prev_insn_is_eint) 2965 { 2966 if (gen_interrupt_nops) 2967 { 2968 gen_nop (); 2969 if (warn_interrupt_nops) 2970 as_warn (_(INSERT_NOP_AFTER_EINT)); 2971 } 2972 else 2973 as_warn (_(WARN_NOP_AFTER_EINT)); 2974 } 2975 /* If we get here it's because the last instruction was 2976 determined to either disable or enable interrupts, but 2977 we're not sure which. 2978 We have no information yet about what effect the 2979 current instruction has on interrupts, that has to be 2980 sorted out later. 2981 The last insn may have required a NOP after it, so we 2982 deal with that now. */ 2983 else 2984 { 2985 if (gen_interrupt_nops) 2986 { 2987 gen_nop (); 2988 if (warn_interrupt_nops) 2989 as_warn (_(INSERT_NOP_AFTER_UNKNOWN)); 2990 } 2991 else 2992 /* warn_unsure_interrupt was called on the previous 2993 insn. */ 2994 as_warn (_(WARN_NOP_AFTER_UNKNOWN)); 2995 } 2996 } 2997 break; 2998 2999 case NOP_CHECK_CPU12: 3000 if (silicon_errata_warn & SILICON_ERRATA_CPU12) 3001 as_warn (_("CPU12: CMP/BIT with PC destination ignores next instruction")); 3002 3003 if (silicon_errata_fix & SILICON_ERRATA_CPU12) 3004 gen_nop (); 3005 break; 3006 3007 case NOP_CHECK_CPU19: 3008 if (silicon_errata_warn & SILICON_ERRATA_CPU19) 3009 as_warn (_("CPU19: Instruction setting CPUOFF must be followed by a NOP")); 3010 3011 if (silicon_errata_fix & SILICON_ERRATA_CPU19) 3012 gen_nop (); 3013 break; 3014 3015 default: 3016 as_bad (_("internal error: unknown nop check state")); 3017 break; 3018 } 3019 check_for_nop &= ~ (check_for_nop & - check_for_nop); 3020 } 3021 while (check_for_nop); 3022 } 3023 check_for_nop = 0; 3024 } 3025 3026 switch (fmt) 3027 { 3028 case 0: 3029 /* Emulated. */ 3030 switch (opcode->insn_opnumb) 3031 { 3032 case 0: 3033 if (is_opcode ("eint")) 3034 warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); 3035 3036 /* Set/clear bits instructions. */ 3037 if (extended_op) 3038 { 3039 if (!addr_op) 3040 extended |= BYTE_OPERATION; 3041 3042 /* Emit the extension word. */ 3043 insn_length += 2; 3044 frag = frag_more (2); 3045 bfd_putl16 (extended, frag); 3046 } 3047 3048 insn_length += 2; 3049 frag = frag_more (2); 3050 bfd_putl16 ((bfd_vma) bin, frag); 3051 dwarf2_emit_insn (insn_length); 3052 break; 3053 3054 case 1: 3055 /* Something which works with destination operand. */ 3056 line = extract_operand (line, l1, sizeof (l1)); 3057 res = msp430_dstoperand (&op1, l1, opcode->bin_opcode, extended_op, TRUE); 3058 if (res) 3059 break; 3060 3061 bin |= (op1.reg | (op1.am << 7)); 3062 3063 /* If the PC is the destination... */ 3064 if (op1.am == 0 && op1.reg == 0 3065 /* ... and the opcode alters the SR. */ 3066 && !(is_opcode ("bic") || is_opcode ("bis") || is_opcode ("mov") 3067 || is_opcode ("bicx") || is_opcode ("bisx") || is_opcode ("movx"))) 3068 { 3069 if (silicon_errata_fix & SILICON_ERRATA_CPU11) 3070 as_bad (_("CPU11: PC is destination of SR altering instruction")); 3071 else if (silicon_errata_warn & SILICON_ERRATA_CPU11) 3072 as_warn (_("CPU11: PC is destination of SR altering instruction")); 3073 } 3074 3075 /* If the status register is the destination... */ 3076 if (op1.am == 0 && op1.reg == 2 3077 /* ... and the opcode alters the SR. */ 3078 && (is_opcode ("adc") || is_opcode ("dec") || is_opcode ("decd") 3079 || is_opcode ("inc") || is_opcode ("incd") || is_opcode ("inv") 3080 || is_opcode ("sbc") || is_opcode ("sxt") 3081 || is_opcode ("adcx") || is_opcode ("decx") || is_opcode ("decdx") 3082 || is_opcode ("incx") || is_opcode ("incdx") || is_opcode ("invx") 3083 || is_opcode ("sbcx") 3084 )) 3085 { 3086 if (silicon_errata_fix & SILICON_ERRATA_CPU13) 3087 as_bad (_("CPU13: SR is destination of SR altering instruction")); 3088 else if (silicon_errata_warn & SILICON_ERRATA_CPU13) 3089 as_warn (_("CPU13: SR is destination of SR altering instruction")); 3090 } 3091 3092 /* Compute the entire instruction length, in bytes. */ 3093 op_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2); 3094 insn_length += op_length; 3095 frag = frag_more (op_length); 3096 where = frag - frag_now->fr_literal; 3097 3098 if (extended_op) 3099 { 3100 if (!addr_op) 3101 extended |= BYTE_OPERATION; 3102 3103 if (op1.ol != 0 && ((extended & 0xf) != 0)) 3104 { 3105 as_bad (_("repeat instruction used with non-register mode instruction")); 3106 extended &= ~ 0xf; 3107 } 3108 3109 if (op1.mode == OP_EXP) 3110 { 3111 if (op1.exp.X_op == O_constant) 3112 extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; 3113 3114 else if (op1.reg || op1.am == 3) /* Not PC relative. */ 3115 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, 3116 BFD_RELOC_MSP430X_ABS20_EXT_SRC); 3117 else 3118 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, 3119 BFD_RELOC_MSP430X_PCR20_EXT_SRC); 3120 } 3121 3122 /* Emit the extension word. */ 3123 bfd_putl16 (extended, frag); 3124 frag += 2; 3125 where += 2; 3126 } 3127 3128 bfd_putl16 ((bfd_vma) bin, frag); 3129 frag += 2; 3130 where += 2; 3131 3132 if (op1.mode == OP_EXP) 3133 { 3134 if (op1.exp.X_op == O_constant) 3135 { 3136 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); 3137 } 3138 else 3139 { 3140 bfd_putl16 ((bfd_vma) ZEROS, frag); 3141 3142 if (!extended_op) 3143 { 3144 if (op1.reg) 3145 fix_new_exp (frag_now, where, 2, 3146 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); 3147 else 3148 fix_new_exp (frag_now, where, 2, 3149 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); 3150 } 3151 } 3152 } 3153 3154 dwarf2_emit_insn (insn_length); 3155 break; 3156 3157 case 2: 3158 /* Shift instruction. */ 3159 line = extract_operand (line, l1, sizeof (l1)); 3160 strncpy (l2, l1, sizeof (l2)); 3161 l2[sizeof (l2) - 1] = '\0'; 3162 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, TRUE); 3163 res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, extended_op, TRUE); 3164 3165 if (res) 3166 break; /* An error occurred. All warnings were done before. */ 3167 3168 insn_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2) + (op2.ol * 2); 3169 frag = frag_more (insn_length); 3170 where = frag - frag_now->fr_literal; 3171 3172 if (target_is_430xv2 () 3173 && op1.mode == OP_REG 3174 && op1.reg == 0 3175 && (is_opcode ("rlax") 3176 || is_opcode ("rlcx") 3177 || is_opcode ("rla") 3178 || is_opcode ("rlc"))) 3179 { 3180 as_bad (_("%s: attempt to rotate the PC register"), opcode->name); 3181 break; 3182 } 3183 3184 /* If the status register is the destination... */ 3185 if (op1.am == 0 && op1.reg == 2 3186 /* ... and the opcode alters the SR. */ 3187 && (is_opcode ("rla") || is_opcode ("rlc") 3188 || is_opcode ("rlax") || is_opcode ("rlcx") 3189 || is_opcode ("sxt") || is_opcode ("sxtx") 3190 || is_opcode ("swpb") 3191 )) 3192 { 3193 if (silicon_errata_fix & SILICON_ERRATA_CPU13) 3194 as_bad (_("CPU13: SR is destination of SR altering instruction")); 3195 else if (silicon_errata_warn & SILICON_ERRATA_CPU13) 3196 as_warn (_("CPU13: SR is destination of SR altering instruction")); 3197 } 3198 3199 if (extended_op) 3200 { 3201 if (!addr_op) 3202 extended |= BYTE_OPERATION; 3203 3204 if ((op1.ol != 0 || op2.ol != 0) && ((extended & 0xf) != 0)) 3205 { 3206 as_bad (_("repeat instruction used with non-register mode instruction")); 3207 extended &= ~ 0xf; 3208 } 3209 3210 if (op1.mode == OP_EXP) 3211 { 3212 if (op1.exp.X_op == O_constant) 3213 extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; 3214 3215 else if (op1.reg || op1.am == 3) /* Not PC relative. */ 3216 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, 3217 BFD_RELOC_MSP430X_ABS20_EXT_SRC); 3218 else 3219 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, 3220 BFD_RELOC_MSP430X_PCR20_EXT_SRC); 3221 } 3222 3223 if (op2.mode == OP_EXP) 3224 { 3225 if (op2.exp.X_op == O_constant) 3226 extended |= (op2.exp.X_add_number >> 16) & 0xf; 3227 3228 else if (op1.mode == OP_EXP) 3229 fix_new_exp (frag_now, where, 8, &(op2.exp), FALSE, 3230 op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_ODST 3231 : BFD_RELOC_MSP430X_PCR20_EXT_ODST); 3232 else 3233 fix_new_exp (frag_now, where, 6, &(op2.exp), FALSE, 3234 op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_DST 3235 : BFD_RELOC_MSP430X_PCR20_EXT_DST); 3236 } 3237 3238 /* Emit the extension word. */ 3239 bfd_putl16 (extended, frag); 3240 frag += 2; 3241 where += 2; 3242 } 3243 3244 bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7)); 3245 bfd_putl16 ((bfd_vma) bin, frag); 3246 frag += 2; 3247 where += 2; 3248 3249 if (op1.mode == OP_EXP) 3250 { 3251 if (op1.exp.X_op == O_constant) 3252 { 3253 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); 3254 } 3255 else 3256 { 3257 bfd_putl16 ((bfd_vma) ZEROS, frag); 3258 3259 if (!extended_op) 3260 { 3261 if (op1.reg || op1.am == 3) /* Not PC relative. */ 3262 fix_new_exp (frag_now, where, 2, 3263 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); 3264 else 3265 fix_new_exp (frag_now, where, 2, 3266 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); 3267 } 3268 } 3269 frag += 2; 3270 where += 2; 3271 } 3272 3273 if (op2.mode == OP_EXP) 3274 { 3275 if (op2.exp.X_op == O_constant) 3276 { 3277 bfd_putl16 (op2.exp.X_add_number & 0xffff, frag); 3278 } 3279 else 3280 { 3281 bfd_putl16 ((bfd_vma) ZEROS, frag); 3282 3283 if (!extended_op) 3284 { 3285 if (op2.reg) /* Not PC relative. */ 3286 fix_new_exp (frag_now, where, 2, 3287 &(op2.exp), FALSE, CHECK_RELOC_MSP430 (op2)); 3288 else 3289 fix_new_exp (frag_now, where, 2, 3290 &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL); 3291 } 3292 } 3293 } 3294 3295 dwarf2_emit_insn (insn_length); 3296 break; 3297 3298 case 3: 3299 /* Branch instruction => mov dst, r0. */ 3300 if (extended_op) 3301 { 3302 as_bad ("Internal error: state 0/3 not coded for extended instructions"); 3303 break; 3304 } 3305 3306 line = extract_operand (line, l1, sizeof (l1)); 3307 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, FALSE); 3308 if (res) 3309 break; 3310 3311 byte_op = FALSE; 3312 imm_op = FALSE; 3313 bin |= ((op1.reg << 8) | (op1.am << 4)); 3314 op_length = 2 + 2 * op1.ol; 3315 frag = frag_more (op_length); 3316 where = frag - frag_now->fr_literal; 3317 bfd_putl16 ((bfd_vma) bin, frag); 3318 3319 if (op1.mode == OP_EXP) 3320 { 3321 if (op1.exp.X_op == O_constant) 3322 { 3323 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag + 2); 3324 } 3325 else 3326 { 3327 where += 2; 3328 3329 bfd_putl16 ((bfd_vma) ZEROS, frag + 2); 3330 3331 if (op1.reg || op1.am == 3) 3332 fix_new_exp (frag_now, where, 2, 3333 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); 3334 else 3335 fix_new_exp (frag_now, where, 2, 3336 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); 3337 } 3338 } 3339 3340 dwarf2_emit_insn (insn_length + op_length); 3341 break; 3342 3343 case 4: 3344 /* CALLA instructions. */ 3345 fix_emitted = FALSE; 3346 3347 line = extract_operand (line, l1, sizeof (l1)); 3348 imm_op = FALSE; 3349 3350 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, 3351 extended_op, FALSE); 3352 if (res) 3353 break; 3354 3355 byte_op = FALSE; 3356 3357 op_length = 2 + 2 * op1.ol; 3358 frag = frag_more (op_length); 3359 where = frag - frag_now->fr_literal; 3360 3361 if (imm_op) 3362 { 3363 if (op1.am == 3) 3364 { 3365 bin |= 0xb0; 3366 3367 fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, 3368 BFD_RELOC_MSP430X_ABS20_ADR_DST); 3369 fix_emitted = TRUE; 3370 } 3371 else if (op1.am == 1) 3372 { 3373 if (op1.reg == 0) 3374 { 3375 bin |= 0x90; 3376 3377 fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, 3378 BFD_RELOC_MSP430X_PCR20_CALL); 3379 fix_emitted = TRUE; 3380 } 3381 else 3382 bin |= 0x50 | op1.reg; 3383 } 3384 else if (op1.am == 0) 3385 bin |= 0x40 | op1.reg; 3386 } 3387 else if (op1.am == 1) 3388 { 3389 bin |= 0x80; 3390 3391 fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, 3392 BFD_RELOC_MSP430X_ABS20_ADR_DST); 3393 fix_emitted = TRUE; 3394 } 3395 else if (op1.am == 2) 3396 bin |= 0x60 | op1.reg; 3397 else if (op1.am == 3) 3398 bin |= 0x70 | op1.reg; 3399 3400 bfd_putl16 ((bfd_vma) bin, frag); 3401 3402 if (op1.mode == OP_EXP) 3403 { 3404 if (op1.ol != 1) 3405 { 3406 as_bad ("Internal error: unexpected CALLA instruction length: %d\n", op1.ol); 3407 break; 3408 } 3409 3410 bfd_putl16 ((bfd_vma) ZEROS, frag + 2); 3411 3412 if (! fix_emitted) 3413 fix_new_exp (frag_now, where + 2, 2, 3414 &(op1.exp), FALSE, BFD_RELOC_16); 3415 } 3416 3417 dwarf2_emit_insn (insn_length + op_length); 3418 break; 3419 3420 case 5: 3421 { 3422 int n; 3423 int reg; 3424 3425 /* [POP|PUSH]M[.A] #N, Rd */ 3426 line = extract_operand (line, l1, sizeof (l1)); 3427 line = extract_operand (line, l2, sizeof (l2)); 3428 3429 if (*l1 != '#') 3430 { 3431 as_bad (_("expected #n as first argument of %s"), opcode->name); 3432 break; 3433 } 3434 end = parse_exp (l1 + 1, &(op1.exp)); 3435 if (end != NULL && *end != 0) 3436 { 3437 as_bad (_("extra characters '%s' at end of constant expression '%s'"), end, l1); 3438 break; 3439 } 3440 if (op1.exp.X_op != O_constant) 3441 { 3442 as_bad (_("expected constant expression as first argument of %s"), 3443 opcode->name); 3444 break; 3445 } 3446 3447 if ((reg = check_reg (l2)) == -1) 3448 { 3449 as_bad (_("expected register as second argument of %s"), 3450 opcode->name); 3451 break; 3452 } 3453 3454 op_length = 2; 3455 frag = frag_more (op_length); 3456 where = frag - frag_now->fr_literal; 3457 bin = opcode->bin_opcode; 3458 if (! addr_op) 3459 bin |= 0x100; 3460 n = op1.exp.X_add_number; 3461 bin |= (n - 1) << 4; 3462 if (is_opcode ("pushm")) 3463 bin |= reg; 3464 else 3465 { 3466 if (reg - n + 1 < 0) 3467 { 3468 as_bad (_("Too many registers popped")); 3469 break; 3470 } 3471 3472 /* CPU21 errata: cannot use POPM to restore the SR register. */ 3473 if (target_is_430xv2 () 3474 && (reg - n + 1 < 3) 3475 && reg >= 2 3476 && is_opcode ("popm")) 3477 { 3478 as_bad (_("Cannot use POPM to restore the SR register")); 3479 break; 3480 } 3481 3482 bin |= (reg - n + 1); 3483 } 3484 3485 bfd_putl16 ((bfd_vma) bin, frag); 3486 dwarf2_emit_insn (op_length); 3487 break; 3488 } 3489 3490 case 6: 3491 { 3492 int n; 3493 int reg; 3494 3495 /* Bit rotation instructions. RRCM, RRAM, RRUM, RLAM. */ 3496 if (extended & 0xff) 3497 { 3498 as_bad (_("repeat count cannot be used with %s"), opcode->name); 3499 break; 3500 } 3501 3502 line = extract_operand (line, l1, sizeof (l1)); 3503 line = extract_operand (line, l2, sizeof (l2)); 3504 3505 if (*l1 != '#') 3506 { 3507 as_bad (_("expected #n as first argument of %s"), opcode->name); 3508 break; 3509 } 3510 end = parse_exp (l1 + 1, &(op1.exp)); 3511 if (end != NULL && *end != 0) 3512 { 3513 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); 3514 break; 3515 } 3516 if (op1.exp.X_op != O_constant) 3517 { 3518 as_bad (_("expected constant expression as first argument of %s"), 3519 opcode->name); 3520 break; 3521 } 3522 n = op1.exp.X_add_number; 3523 if (n > 4 || n < 1) 3524 { 3525 as_bad (_("expected first argument of %s to be in the range 1-4"), 3526 opcode->name); 3527 break; 3528 } 3529 3530 if ((reg = check_reg (l2)) == -1) 3531 { 3532 as_bad (_("expected register as second argument of %s"), 3533 opcode->name); 3534 break; 3535 } 3536 3537 if (target_is_430xv2 () && reg == 0) 3538 { 3539 as_bad (_("%s: attempt to rotate the PC register"), opcode->name); 3540 break; 3541 } 3542 3543 op_length = 2; 3544 frag = frag_more (op_length); 3545 where = frag - frag_now->fr_literal; 3546 3547 bin = opcode->bin_opcode; 3548 if (! addr_op) 3549 bin |= 0x10; 3550 bin |= (n - 1) << 10; 3551 bin |= reg; 3552 3553 bfd_putl16 ((bfd_vma) bin, frag); 3554 dwarf2_emit_insn (op_length); 3555 break; 3556 } 3557 3558 case 8: 3559 { 3560 bfd_boolean need_reloc = FALSE; 3561 int n; 3562 int reg; 3563 3564 /* ADDA, CMPA and SUBA address instructions. */ 3565 if (extended & 0xff) 3566 { 3567 as_bad (_("repeat count cannot be used with %s"), opcode->name); 3568 break; 3569 } 3570 3571 line = extract_operand (line, l1, sizeof (l1)); 3572 line = extract_operand (line, l2, sizeof (l2)); 3573 3574 bin = opcode->bin_opcode; 3575 3576 if (*l1 == '#') 3577 { 3578 end = parse_exp (l1 + 1, &(op1.exp)); 3579 if (end != NULL && *end != 0) 3580 { 3581 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); 3582 break; 3583 } 3584 3585 if (op1.exp.X_op == O_constant) 3586 { 3587 n = op1.exp.X_add_number; 3588 if (n > 0xfffff || n < - (0x7ffff)) 3589 { 3590 as_bad (_("expected value of first argument of %s to fit into 20-bits"), 3591 opcode->name); 3592 break; 3593 } 3594 3595 bin |= ((n >> 16) & 0xf) << 8; 3596 } 3597 else 3598 { 3599 n = 0; 3600 need_reloc = TRUE; 3601 } 3602 3603 op_length = 4; 3604 } 3605 else 3606 { 3607 if ((n = check_reg (l1)) == -1) 3608 { 3609 as_bad (_("expected register name or constant as first argument of %s"), 3610 opcode->name); 3611 break; 3612 } 3613 3614 bin |= (n << 8) | (1 << 6); 3615 op_length = 2; 3616 } 3617 3618 if ((reg = check_reg (l2)) == -1) 3619 { 3620 as_bad (_("expected register as second argument of %s"), 3621 opcode->name); 3622 break; 3623 } 3624 3625 frag = frag_more (op_length); 3626 where = frag - frag_now->fr_literal; 3627 bin |= reg; 3628 if (need_reloc) 3629 fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, 3630 BFD_RELOC_MSP430X_ABS20_ADR_SRC); 3631 3632 bfd_putl16 ((bfd_vma) bin, frag); 3633 if (op_length == 4) 3634 bfd_putl16 ((bfd_vma) (n & 0xffff), frag + 2); 3635 dwarf2_emit_insn (op_length); 3636 break; 3637 } 3638 3639 case 9: /* MOVA, BRA, RETA. */ 3640 imm_op = FALSE; 3641 bin = opcode->bin_opcode; 3642 3643 if (is_opcode ("reta")) 3644 { 3645 /* The RETA instruction does not take any arguments. 3646 The implicit first argument is @SP+. 3647 The implicit second argument is PC. */ 3648 op1.mode = OP_REG; 3649 op1.am = 3; 3650 op1.reg = 1; 3651 3652 op2.mode = OP_REG; 3653 op2.reg = 0; 3654 } 3655 else 3656 { 3657 line = extract_operand (line, l1, sizeof (l1)); 3658 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, 3659 &imm_op, extended_op, FALSE); 3660 3661 if (is_opcode ("bra")) 3662 { 3663 /* This is the BRA synthetic instruction. 3664 The second argument is always PC. */ 3665 op2.mode = OP_REG; 3666 op2.reg = 0; 3667 } 3668 else 3669 { 3670 line = extract_operand (line, l2, sizeof (l2)); 3671 res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, 3672 extended_op, TRUE); 3673 } 3674 3675 if (res) 3676 break; /* Error occurred. All warnings were done before. */ 3677 } 3678 3679 /* Only a restricted subset of the normal MSP430 addressing modes 3680 are supported here, so check for the ones that are allowed. */ 3681 if ((op_length = try_encode_mova (imm_op, bin, & op1, & op2, 3682 & error_message)) == 0) 3683 { 3684 as_bad (error_message, opcode->name); 3685 break; 3686 } 3687 dwarf2_emit_insn (op_length); 3688 break; 3689 3690 case 10: /* RPT */ 3691 line = extract_operand (line, l1, sizeof l1); 3692 /* The RPT instruction only accepted immediates and registers. */ 3693 if (*l1 == '#') 3694 { 3695 end = parse_exp (l1 + 1, &(op1.exp)); 3696 if (end != NULL && *end != 0) 3697 { 3698 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); 3699 break; 3700 } 3701 if (op1.exp.X_op != O_constant) 3702 { 3703 as_bad (_("expected constant value as argument to RPT")); 3704 break; 3705 } 3706 if (op1.exp.X_add_number < 1 3707 || op1.exp.X_add_number > (1 << 4)) 3708 { 3709 as_bad (_("expected constant in the range 2..16")); 3710 break; 3711 } 3712 3713 /* We silently accept and ignore a repeat count of 1. */ 3714 if (op1.exp.X_add_number > 1) 3715 repeat_count = op1.exp.X_add_number; 3716 } 3717 else 3718 { 3719 int reg; 3720 3721 if ((reg = check_reg (l1)) != -1) 3722 { 3723 if (reg == 0) 3724 as_warn (_("PC used as an argument to RPT")); 3725 else 3726 repeat_count = - reg; 3727 } 3728 else 3729 { 3730 as_bad (_("expected constant or register name as argument to RPT insn")); 3731 break; 3732 } 3733 } 3734 break; 3735 3736 default: 3737 as_bad (_("Illegal emulated instruction")); 3738 break; 3739 } 3740 break; 3741 3742 /* FIXME: Emit warning when dest reg SR(R2) is addressed with .B or .A. 3743 From f5 ref man 6.3.3: 3744 The 16-bit Status Register (SR, also called R2), used as a source or 3745 destination register, can only be used in register mode addressed 3746 with word instructions. */ 3747 3748 case 1: /* Format 1, double operand. */ 3749 line = extract_operand (line, l1, sizeof (l1)); 3750 line = extract_operand (line, l2, sizeof (l2)); 3751 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, TRUE); 3752 res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, extended_op, TRUE); 3753 3754 if (res) 3755 break; /* Error occurred. All warnings were done before. */ 3756 3757 if (extended_op 3758 && is_opcode ("movx") 3759 && addr_op 3760 && msp430_enable_relax) 3761 { 3762 /* This is the MOVX.A instruction. See if we can convert 3763 it into the MOVA instruction instead. This saves 2 bytes. */ 3764 if ((op_length = try_encode_mova (imm_op, 0x0000, & op1, & op2, 3765 NULL)) != 0) 3766 { 3767 dwarf2_emit_insn (op_length); 3768 break; 3769 } 3770 } 3771 3772 bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7)); 3773 3774 /* If the PC is the destination... */ 3775 if (op2.am == 0 && op2.reg == 0 3776 /* ... and the opcode alters the SR. */ 3777 && !(is_opcode ("bic") || is_opcode ("bis") || is_opcode ("mov") 3778 || is_opcode ("bicx") || is_opcode ("bisx") || is_opcode ("movx"))) 3779 { 3780 if (silicon_errata_fix & SILICON_ERRATA_CPU11) 3781 as_bad (_("CPU11: PC is destination of SR altering instruction")); 3782 else if (silicon_errata_warn & SILICON_ERRATA_CPU11) 3783 as_warn (_("CPU11: PC is destination of SR altering instruction")); 3784 } 3785 3786 /* If the status register is the destination... */ 3787 if (op2.am == 0 && op2.reg == 2 3788 /* ... and the opcode alters the SR. */ 3789 && (is_opcode ("add") || is_opcode ("addc") || is_opcode ("and") 3790 || is_opcode ("dadd") || is_opcode ("sub") || is_opcode ("subc") 3791 || is_opcode ("xor") 3792 || is_opcode ("addx") || is_opcode ("addcx") || is_opcode ("andx") 3793 || is_opcode ("daddx") || is_opcode ("subx") || is_opcode ("subcx") 3794 || is_opcode ("xorx") 3795 )) 3796 { 3797 if (silicon_errata_fix & SILICON_ERRATA_CPU13) 3798 as_bad (_("CPU13: SR is destination of SR altering instruction")); 3799 else if (silicon_errata_warn & SILICON_ERRATA_CPU13) 3800 as_warn (_("CPU13: SR is destination of SR altering instruction")); 3801 } 3802 3803 /* Chain these checks for SR manipulations so we can warn if they are not 3804 caught. */ 3805 if (((is_opcode ("bis") && bin == 0xd032) 3806 || (is_opcode ("mov") && bin == 0x4032) 3807 || (is_opcode ("xor") && bin == 0xe032)) 3808 && op1.mode == OP_EXP 3809 && op1.exp.X_op == O_constant 3810 && (op1.exp.X_add_number & 0x10) == 0x10) 3811 check_for_nop |= NOP_CHECK_CPU19; 3812 else if ((is_opcode ("mov") && op2.mode == OP_REG && op2.reg == 2)) 3813 { 3814 /* Any MOV with the SR as the destination either enables or disables 3815 interrupts. */ 3816 if (op1.mode == OP_EXP 3817 && op1.exp.X_op == O_constant) 3818 { 3819 if ((op1.exp.X_add_number & 0x8) == 0x8) 3820 { 3821 /* The GIE bit is being set. */ 3822 warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); 3823 this_insn_is_eint = TRUE; 3824 } 3825 else 3826 /* The GIE bit is being cleared. */ 3827 this_insn_is_dint = TRUE; 3828 } 3829 /* If an immediate value which is covered by the constant generator 3830 is the src, then op1 will have been changed to either R2 or R3 by 3831 this point. 3832 The only constants covered by CG1 and CG2, which have bit 3 set 3833 and therefore would enable interrupts when writing to the SR, are 3834 R2 with addresing mode 0b11 and R3 with 0b11. 3835 The addressing mode is in bits 5:4 of the binary opcode. */ 3836 else if (op1.mode == OP_REG 3837 && (op1.reg == 2 || op1.reg == 3) 3838 && (bin & 0x30) == 0x30) 3839 { 3840 warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); 3841 this_insn_is_eint = TRUE; 3842 } 3843 /* Any other use of the constant generator with destination R2, will 3844 disable interrupts. */ 3845 else if (op1.mode == OP_REG 3846 && (op1.reg == 2 || op1.reg == 3)) 3847 this_insn_is_dint = TRUE; 3848 else if (do_unknown_interrupt_nops) 3849 { 3850 /* FIXME: Couldn't work out whether the insn is enabling or 3851 disabling interrupts, so for safety need to treat it as both 3852 a DINT and EINT. */ 3853 warn_unsure_interrupt (prev_insn_is_nop, prev_insn_is_dint); 3854 check_for_nop |= NOP_CHECK_INTERRUPT; 3855 } 3856 } 3857 else if (is_eint (opcode->name, bin)) 3858 warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); 3859 else if ((bin & 0x32) == 0x32) 3860 { 3861 /* Double-operand insn with the As==0b11 and Rdst==0x2 will result in 3862 * an interrupt state change if a write happens. */ 3863 /* FIXME: How strict to be here? */ 3864 ; 3865 } 3866 3867 /* Compute the entire length of the instruction in bytes. */ 3868 op_length = (extended_op ? 2 : 0) /* The extension word. */ 3869 + 2 /* The opcode */ 3870 + (2 * op1.ol) /* The first operand. */ 3871 + (2 * op2.ol); /* The second operand. */ 3872 3873 insn_length += op_length; 3874 frag = frag_more (op_length); 3875 where = frag - frag_now->fr_literal; 3876 3877 if (extended_op) 3878 { 3879 if (!addr_op) 3880 extended |= BYTE_OPERATION; 3881 3882 if ((op1.ol != 0 || op2.ol != 0) && ((extended & 0xf) != 0)) 3883 { 3884 as_bad (_("repeat instruction used with non-register mode instruction")); 3885 extended &= ~ 0xf; 3886 } 3887 3888 /* If necessary, emit a reloc to update the extension word. */ 3889 if (op1.mode == OP_EXP) 3890 { 3891 if (op1.exp.X_op == O_constant) 3892 extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; 3893 3894 else if (op1.reg || op1.am == 3) /* Not PC relative. */ 3895 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, 3896 BFD_RELOC_MSP430X_ABS20_EXT_SRC); 3897 else 3898 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, 3899 BFD_RELOC_MSP430X_PCR20_EXT_SRC); 3900 } 3901 3902 if (op2.mode == OP_EXP) 3903 { 3904 if (op2.exp.X_op == O_constant) 3905 extended |= (op2.exp.X_add_number >> 16) & 0xf; 3906 3907 else if (op1.mode == OP_EXP) 3908 fix_new_exp (frag_now, where, 8, &(op2.exp), FALSE, 3909 op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_ODST 3910 : BFD_RELOC_MSP430X_PCR20_EXT_ODST); 3911 3912 else 3913 fix_new_exp (frag_now, where, 6, &(op2.exp), FALSE, 3914 op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_DST 3915 : BFD_RELOC_MSP430X_PCR20_EXT_DST); 3916 } 3917 3918 /* Emit the extension word. */ 3919 bfd_putl16 (extended, frag); 3920 where += 2; 3921 frag += 2; 3922 } 3923 3924 bfd_putl16 ((bfd_vma) bin, frag); 3925 where += 2; 3926 frag += 2; 3927 3928 if (op1.mode == OP_EXP) 3929 { 3930 if (op1.exp.X_op == O_constant) 3931 { 3932 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); 3933 } 3934 else 3935 { 3936 bfd_putl16 ((bfd_vma) ZEROS, frag); 3937 3938 if (!extended_op) 3939 { 3940 if (op1.reg || op1.am == 3) /* Not PC relative. */ 3941 fix_new_exp (frag_now, where, 2, 3942 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); 3943 else 3944 fix_new_exp (frag_now, where, 2, 3945 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); 3946 } 3947 } 3948 3949 where += 2; 3950 frag += 2; 3951 } 3952 3953 if (op2.mode == OP_EXP) 3954 { 3955 if (op2.exp.X_op == O_constant) 3956 { 3957 bfd_putl16 (op2.exp.X_add_number & 0xffff, frag); 3958 } 3959 else 3960 { 3961 bfd_putl16 ((bfd_vma) ZEROS, frag); 3962 3963 if (!extended_op) 3964 { 3965 if (op2.reg) /* Not PC relative. */ 3966 fix_new_exp (frag_now, where, 2, 3967 &(op2.exp), FALSE, CHECK_RELOC_MSP430 (op2)); 3968 else 3969 fix_new_exp (frag_now, where, 2, 3970 &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL); 3971 } 3972 } 3973 } 3974 3975 dwarf2_emit_insn (insn_length); 3976 3977 /* If the PC is the destination... */ 3978 if (op2.am == 0 && op2.reg == 0 3979 /* ... but the opcode does not alter the destination. */ 3980 && (is_opcode ("cmp") || is_opcode ("bit") || is_opcode ("cmpx"))) 3981 check_for_nop |= NOP_CHECK_CPU12; 3982 break; 3983 3984 case 2: /* Single-operand mostly instr. */ 3985 if (opcode->insn_opnumb == 0) 3986 { 3987 /* reti instruction. */ 3988 insn_length += 2; 3989 frag = frag_more (2); 3990 bfd_putl16 ((bfd_vma) bin, frag); 3991 dwarf2_emit_insn (insn_length); 3992 break; 3993 } 3994 3995 line = extract_operand (line, l1, sizeof (l1)); 3996 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, 3997 &imm_op, extended_op, TRUE); 3998 if (res) 3999 break; /* Error in operand. */ 4000 4001 if (target_is_430xv2 () 4002 && op1.mode == OP_REG 4003 && op1.reg == 0 4004 && (is_opcode ("rrax") 4005 || is_opcode ("rrcx") 4006 || is_opcode ("rra") 4007 || is_opcode ("rrc"))) 4008 { 4009 as_bad (_("%s: attempt to rotate the PC register"), opcode->name); 4010 break; 4011 } 4012 4013 /* If the status register is the destination... */ 4014 if (op1.am == 0 && op1.reg == 2 4015 /* ... and the opcode alters the SR. */ 4016 && (is_opcode ("rra") || is_opcode ("rrc") || is_opcode ("sxt"))) 4017 { 4018 if (silicon_errata_fix & SILICON_ERRATA_CPU13) 4019 as_bad (_("CPU13: SR is destination of SR altering instruction")); 4020 else if (silicon_errata_warn & SILICON_ERRATA_CPU13) 4021 as_warn (_("CPU13: SR is destination of SR altering instruction")); 4022 } 4023 4024 insn_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2); 4025 frag = frag_more (insn_length); 4026 where = frag - frag_now->fr_literal; 4027 4028 if (extended_op) 4029 { 4030 if (is_opcode ("swpbx") || is_opcode ("sxtx")) 4031 { 4032 /* These two instructions use a special 4033 encoding of the A/L and B/W bits. */ 4034 bin &= ~ BYTE_OPERATION; 4035 4036 if (byte_op) 4037 { 4038 as_bad (_("%s instruction does not accept a .b suffix"), 4039 opcode->name); 4040 break; 4041 } 4042 else if (! addr_op) 4043 extended |= BYTE_OPERATION; 4044 } 4045 else if (! addr_op) 4046 extended |= BYTE_OPERATION; 4047 4048 if (is_opcode ("rrux")) 4049 extended |= IGNORE_CARRY_BIT; 4050 4051 if (op1.ol != 0 && ((extended & 0xf) != 0)) 4052 { 4053 as_bad (_("repeat instruction used with non-register mode instruction")); 4054 extended &= ~ 0xf; 4055 } 4056 4057 if (op1.mode == OP_EXP) 4058 { 4059 if (op1.exp.X_op == O_constant) 4060 extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; 4061 4062 else if (op1.reg || op1.am == 3) /* Not PC relative. */ 4063 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, 4064 BFD_RELOC_MSP430X_ABS20_EXT_SRC); 4065 else 4066 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, 4067 BFD_RELOC_MSP430X_PCR20_EXT_SRC); 4068 } 4069 4070 /* Emit the extension word. */ 4071 bfd_putl16 (extended, frag); 4072 frag += 2; 4073 where += 2; 4074 } 4075 4076 bin |= op1.reg | (op1.am << 4); 4077 bfd_putl16 ((bfd_vma) bin, frag); 4078 frag += 2; 4079 where += 2; 4080 4081 if (op1.mode == OP_EXP) 4082 { 4083 if (op1.exp.X_op == O_constant) 4084 { 4085 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); 4086 } 4087 else 4088 { 4089 bfd_putl16 ((bfd_vma) ZEROS, frag); 4090 4091 if (!extended_op) 4092 { 4093 if (op1.reg || op1.am == 3) /* Not PC relative. */ 4094 fix_new_exp (frag_now, where, 2, 4095 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); 4096 else 4097 fix_new_exp (frag_now, where, 2, 4098 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); 4099 } 4100 } 4101 } 4102 4103 dwarf2_emit_insn (insn_length); 4104 break; 4105 4106 case 3: /* Conditional jumps instructions. */ 4107 line = extract_operand (line, l1, sizeof (l1)); 4108 /* l1 is a label. */ 4109 if (l1[0]) 4110 { 4111 char *m = l1; 4112 expressionS exp; 4113 4114 if (*m == '$') 4115 m++; 4116 4117 end = parse_exp (m, &exp); 4118 if (end != NULL && *end != 0) 4119 { 4120 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); 4121 break; 4122 } 4123 4124 /* In order to handle something like: 4125 4126 and #0x8000, r5 4127 tst r5 4128 jz 4 ; skip next 4 bytes 4129 inv r5 4130 inc r5 4131 nop ; will jump here if r5 positive or zero 4132 4133 jCOND -n ;assumes jump n bytes backward: 4134 4135 mov r5,r6 4136 jmp -2 4137 4138 is equal to: 4139 lab: 4140 mov r5,r6 4141 jmp lab 4142 4143 jCOND $n ; jump from PC in either direction. */ 4144 4145 if (exp.X_op == O_constant) 4146 { 4147 int x = exp.X_add_number; 4148 4149 if (x & 1) 4150 { 4151 as_warn (_("Even number required. Rounded to %d"), x + 1); 4152 x++; 4153 } 4154 4155 if ((*l1 == '$' && x > 0) || x < 0) 4156 x -= 2; 4157 4158 x >>= 1; 4159 4160 if (x > 512 || x < -511) 4161 { 4162 as_bad (_("Wrong displacement %d"), x << 1); 4163 break; 4164 } 4165 4166 insn_length += 2; 4167 frag = frag_more (2); /* Instr size is 1 word. */ 4168 4169 bin |= x & 0x3ff; 4170 bfd_putl16 ((bfd_vma) bin, frag); 4171 } 4172 else if (exp.X_op == O_symbol && *l1 != '$') 4173 { 4174 insn_length += 2; 4175 frag = frag_more (2); /* Instr size is 1 word. */ 4176 where = frag - frag_now->fr_literal; 4177 fix_new_exp (frag_now, where, 2, 4178 &exp, TRUE, BFD_RELOC_MSP430_10_PCREL); 4179 4180 bfd_putl16 ((bfd_vma) bin, frag); 4181 } 4182 else if (*l1 == '$') 4183 { 4184 as_bad (_("instruction requires label sans '$'")); 4185 } 4186 else 4187 as_bad (_ 4188 ("instruction requires label or value in range -511:512")); 4189 dwarf2_emit_insn (insn_length); 4190 break; 4191 } 4192 else 4193 { 4194 as_bad (_("instruction requires label")); 4195 break; 4196 } 4197 break; 4198 4199 case 4: /* Extended jumps. */ 4200 if (!msp430_enable_polys) 4201 { 4202 as_bad (_("polymorphs are not enabled. Use -mP option to enable.")); 4203 break; 4204 } 4205 4206 line = extract_operand (line, l1, sizeof (l1)); 4207 if (l1[0]) 4208 { 4209 char *m = l1; 4210 expressionS exp; 4211 4212 /* Ignore absolute addressing. make it PC relative anyway. */ 4213 if (*m == '#' || *m == '$') 4214 m++; 4215 4216 end = parse_exp (m, & exp); 4217 if (end != NULL && *end != 0) 4218 { 4219 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); 4220 break; 4221 } 4222 if (exp.X_op == O_symbol) 4223 { 4224 /* Relaxation required. */ 4225 struct rcodes_s rc = msp430_rcodes[opcode->insn_opnumb]; 4226 4227 if (target_is_430x ()) 4228 rc = msp430x_rcodes[opcode->insn_opnumb]; 4229 4230 /* The parameter to dwarf2_emit_insn is actually the offset to 4231 the start of the insn from the fix piece of instruction that 4232 was emitted. Since next fragments may have variable size we 4233 tie debug info to the beginning of the instruction. */ 4234 insn_length += 8; 4235 frag = frag_more (8); 4236 dwarf2_emit_insn (0); 4237 bfd_putl16 ((bfd_vma) rc.sop, frag); 4238 frag = frag_variant (rs_machine_dependent, 8, 2, 4239 /* Wild guess. */ 4240 ENCODE_RELAX (rc.lpos, STATE_BITS10), 4241 exp.X_add_symbol, 4242 0, /* Offset is zero if jump dist less than 1K. */ 4243 (char *) frag); 4244 break; 4245 } 4246 } 4247 4248 as_bad (_("instruction requires label")); 4249 break; 4250 4251 case 5: /* Emulated extended branches. */ 4252 if (!msp430_enable_polys) 4253 { 4254 as_bad (_("polymorphs are not enabled. Use -mP option to enable.")); 4255 break; 4256 } 4257 line = extract_operand (line, l1, sizeof (l1)); 4258 if (l1[0]) 4259 { 4260 char * m = l1; 4261 expressionS exp; 4262 4263 /* Ignore absolute addressing. make it PC relative anyway. */ 4264 if (*m == '#' || *m == '$') 4265 m++; 4266 4267 end = parse_exp (m, & exp); 4268 if (end != NULL && *end != 0) 4269 { 4270 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); 4271 break; 4272 } 4273 if (exp.X_op == O_symbol) 4274 { 4275 /* Relaxation required. */ 4276 struct hcodes_s hc = msp430_hcodes[opcode->insn_opnumb]; 4277 4278 if (target_is_430x ()) 4279 hc = msp430x_hcodes[opcode->insn_opnumb]; 4280 4281 insn_length += 8; 4282 frag = frag_more (8); 4283 dwarf2_emit_insn (0); 4284 bfd_putl16 ((bfd_vma) hc.op0, frag); 4285 bfd_putl16 ((bfd_vma) hc.op1, frag+2); 4286 4287 frag = frag_variant (rs_machine_dependent, 8, 2, 4288 ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10), /* Wild guess. */ 4289 exp.X_add_symbol, 4290 0, /* Offset is zero if jump dist less than 1K. */ 4291 (char *) frag); 4292 break; 4293 } 4294 } 4295 4296 as_bad (_("instruction requires label")); 4297 break; 4298 4299 default: 4300 as_bad (_("Illegal instruction or not implemented opcode.")); 4301 } 4302 4303 if (is_opcode ("nop")) 4304 { 4305 prev_insn_is_nop = TRUE; 4306 prev_insn_is_dint = FALSE; 4307 prev_insn_is_eint = FALSE; 4308 } 4309 else if (this_insn_is_dint || is_dint (opcode->name, bin)) 4310 { 4311 prev_insn_is_dint = TRUE; 4312 prev_insn_is_eint = FALSE; 4313 prev_insn_is_nop = FALSE; 4314 check_for_nop |= NOP_CHECK_INTERRUPT; 4315 } 4316 /* NOP is not needed after EINT for 430 ISA. */ 4317 else if (target_is_430x () && (this_insn_is_eint || is_eint (opcode->name, bin))) 4318 { 4319 prev_insn_is_eint = TRUE; 4320 prev_insn_is_nop = FALSE; 4321 prev_insn_is_dint = FALSE; 4322 check_for_nop |= NOP_CHECK_INTERRUPT; 4323 } 4324 else 4325 { 4326 prev_insn_is_nop = FALSE; 4327 prev_insn_is_dint = FALSE; 4328 prev_insn_is_eint = FALSE; 4329 } 4330 4331 input_line_pointer = line; 4332 return 0; 4333 } 4334 4335 void 4336 md_assemble (char * str) 4337 { 4338 struct msp430_opcode_s * opcode; 4339 char cmd[32]; 4340 unsigned int i = 0; 4341 4342 str = skip_space (str); /* Skip leading spaces. */ 4343 str = extract_cmd (str, cmd, sizeof (cmd) - 1); 4344 4345 while (cmd[i]) 4346 { 4347 char a = TOLOWER (cmd[i]); 4348 cmd[i] = a; 4349 i++; 4350 } 4351 4352 if (!cmd[0]) 4353 { 4354 as_bad (_("can't find opcode")); 4355 return; 4356 } 4357 4358 opcode = (struct msp430_opcode_s *) hash_find (msp430_hash, cmd); 4359 4360 if (opcode == NULL) 4361 { 4362 as_bad (_("unknown opcode `%s'"), cmd); 4363 return; 4364 } 4365 4366 { 4367 char *__t = input_line_pointer; 4368 4369 msp430_operands (opcode, str); 4370 input_line_pointer = __t; 4371 } 4372 } 4373 4374 /* GAS will call this function for each section at the end of the assembly, 4375 to permit the CPU backend to adjust the alignment of a section. */ 4376 4377 valueT 4378 md_section_align (asection * seg, valueT addr) 4379 { 4380 int align = bfd_section_alignment (seg); 4381 4382 return ((addr + (1 << align) - 1) & -(1 << align)); 4383 } 4384 4385 /* If you define this macro, it should return the offset between the 4386 address of a PC relative fixup and the position from which the PC 4387 relative adjustment should be made. On many processors, the base 4388 of a PC relative instruction is the next instruction, so this 4389 macro would return the length of an instruction. */ 4390 4391 long 4392 md_pcrel_from_section (fixS * fixp, segT sec) 4393 { 4394 if (fixp->fx_addsy != (symbolS *) NULL 4395 && (!S_IS_DEFINED (fixp->fx_addsy) 4396 || (S_GET_SEGMENT (fixp->fx_addsy) != sec))) 4397 return 0; 4398 4399 return fixp->fx_frag->fr_address + fixp->fx_where; 4400 } 4401 4402 /* Addition to the standard TC_FORCE_RELOCATION_LOCAL. 4403 Now it handles the situation when relocations 4404 have to be passed to linker. */ 4405 int 4406 msp430_force_relocation_local (fixS *fixp) 4407 { 4408 if (fixp->fx_r_type == BFD_RELOC_MSP430_10_PCREL) 4409 return 1; 4410 if (fixp->fx_pcrel) 4411 return 1; 4412 if (msp430_enable_polys 4413 && !msp430_enable_relax) 4414 return 1; 4415 4416 return 0; 4417 } 4418 4419 4420 /* GAS will call this for each fixup. It should store the correct 4421 value in the object file. */ 4422 void 4423 md_apply_fix (fixS * fixp, valueT * valuep, segT seg) 4424 { 4425 unsigned char * where; 4426 unsigned long insn; 4427 long value; 4428 4429 if (fixp->fx_addsy == (symbolS *) NULL) 4430 { 4431 value = *valuep; 4432 fixp->fx_done = 1; 4433 } 4434 else if (fixp->fx_pcrel) 4435 { 4436 segT s = S_GET_SEGMENT (fixp->fx_addsy); 4437 4438 if (fixp->fx_addsy && (s == seg || s == absolute_section)) 4439 { 4440 /* FIXME: We can appear here only in case if we perform a pc 4441 relative jump to the label which is i) global, ii) locally 4442 defined or this is a jump to an absolute symbol. 4443 If this is an absolute symbol -- everything is OK. 4444 If this is a global label, we've got a symbol value defined 4445 twice: 4446 1. S_GET_VALUE (fixp->fx_addsy) will contain a symbol offset 4447 from this section start 4448 2. *valuep will contain the real offset from jump insn to the 4449 label 4450 So, the result of S_GET_VALUE (fixp->fx_addsy) + (* valuep); 4451 will be incorrect. Therefore remove s_get_value. */ 4452 value = /* S_GET_VALUE (fixp->fx_addsy) + */ * valuep; 4453 fixp->fx_done = 1; 4454 } 4455 else 4456 value = *valuep; 4457 } 4458 else 4459 { 4460 value = fixp->fx_offset; 4461 4462 if (fixp->fx_subsy != (symbolS *) NULL) 4463 { 4464 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) 4465 { 4466 value -= S_GET_VALUE (fixp->fx_subsy); 4467 fixp->fx_done = 1; 4468 } 4469 } 4470 } 4471 4472 fixp->fx_no_overflow = 1; 4473 4474 /* If polymorphs are enabled and relax disabled. 4475 do not kill any relocs and pass them to linker. */ 4476 if (msp430_enable_polys 4477 && !msp430_enable_relax) 4478 { 4479 if (!fixp->fx_addsy 4480 || S_GET_SEGMENT (fixp->fx_addsy) == absolute_section) 4481 fixp->fx_done = 1; /* It is ok to kill 'abs' reloc. */ 4482 else 4483 fixp->fx_done = 0; 4484 } 4485 4486 if (fixp->fx_done) 4487 { 4488 /* Fetch the instruction, insert the fully resolved operand 4489 value, and stuff the instruction back again. */ 4490 where = (unsigned char *) fixp->fx_frag->fr_literal + fixp->fx_where; 4491 4492 insn = bfd_getl16 (where); 4493 4494 switch (fixp->fx_r_type) 4495 { 4496 case BFD_RELOC_MSP430_10_PCREL: 4497 if (value & 1) 4498 as_bad_where (fixp->fx_file, fixp->fx_line, 4499 _("odd address operand: %ld"), value); 4500 4501 /* Jumps are in words. */ 4502 value >>= 1; 4503 --value; /* Correct PC. */ 4504 4505 if (value < -512 || value > 511) 4506 as_bad_where (fixp->fx_file, fixp->fx_line, 4507 _("operand out of range: %ld"), value); 4508 4509 value &= 0x3ff; /* get rid of extended sign */ 4510 bfd_putl16 ((bfd_vma) (value | insn), where); 4511 break; 4512 4513 case BFD_RELOC_MSP430X_PCR16: 4514 case BFD_RELOC_MSP430_RL_PCREL: 4515 case BFD_RELOC_MSP430_16_PCREL: 4516 if (value & 1) 4517 as_bad_where (fixp->fx_file, fixp->fx_line, 4518 _("odd address operand: %ld"), value); 4519 /* Fall through. */ 4520 4521 case BFD_RELOC_MSP430_16_PCREL_BYTE: 4522 /* Nothing to be corrected here. */ 4523 if (value < -32768 || value > 65536) 4524 as_bad_where (fixp->fx_file, fixp->fx_line, 4525 _("operand out of range: %ld"), value); 4526 /* Fall through. */ 4527 4528 case BFD_RELOC_MSP430X_ABS16: 4529 case BFD_RELOC_MSP430_16: 4530 case BFD_RELOC_16: 4531 case BFD_RELOC_MSP430_16_BYTE: 4532 value &= 0xffff; /* Get rid of extended sign. */ 4533 bfd_putl16 ((bfd_vma) value, where); 4534 break; 4535 4536 case BFD_RELOC_MSP430_ABS_HI16: 4537 value >>= 16; 4538 value &= 0xffff; /* Get rid of extended sign. */ 4539 bfd_putl16 ((bfd_vma) value, where); 4540 break; 4541 4542 case BFD_RELOC_32: 4543 bfd_putl16 ((bfd_vma) value, where); 4544 break; 4545 4546 case BFD_RELOC_MSP430_ABS8: 4547 case BFD_RELOC_8: 4548 bfd_put_8 (NULL, (bfd_vma) value, where); 4549 break; 4550 4551 case BFD_RELOC_MSP430X_ABS20_EXT_SRC: 4552 case BFD_RELOC_MSP430X_PCR20_EXT_SRC: 4553 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 4); 4554 value >>= 16; 4555 bfd_putl16 ((bfd_vma) (((value & 0xf) << 7) | insn), where); 4556 break; 4557 4558 case BFD_RELOC_MSP430X_ABS20_ADR_SRC: 4559 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); 4560 value >>= 16; 4561 bfd_putl16 ((bfd_vma) (((value & 0xf) << 8) | insn), where); 4562 break; 4563 4564 case BFD_RELOC_MSP430X_ABS20_EXT_ODST: 4565 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 6); 4566 value >>= 16; 4567 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); 4568 break; 4569 4570 case BFD_RELOC_MSP430X_PCR20_CALL: 4571 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); 4572 value >>= 16; 4573 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); 4574 break; 4575 4576 case BFD_RELOC_MSP430X_ABS20_EXT_DST: 4577 case BFD_RELOC_MSP430X_PCR20_EXT_DST: 4578 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 4); 4579 value >>= 16; 4580 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); 4581 break; 4582 4583 case BFD_RELOC_MSP430X_PCR20_EXT_ODST: 4584 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 6); 4585 value >>= 16; 4586 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); 4587 break; 4588 4589 case BFD_RELOC_MSP430X_ABS20_ADR_DST: 4590 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); 4591 value >>= 16; 4592 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); 4593 break; 4594 4595 default: 4596 as_fatal (_("line %d: unknown relocation type: 0x%x"), 4597 fixp->fx_line, fixp->fx_r_type); 4598 break; 4599 } 4600 } 4601 else 4602 { 4603 fixp->fx_addnumber = value; 4604 } 4605 } 4606 4607 static bfd_boolean 4608 S_IS_GAS_LOCAL (symbolS * s) 4609 { 4610 const char * name; 4611 unsigned int len; 4612 4613 if (s == NULL) 4614 return FALSE; 4615 name = S_GET_NAME (s); 4616 len = strlen (name) - 1; 4617 4618 return name[len] == 1 || name[len] == 2; 4619 } 4620 4621 /* GAS will call this to generate a reloc, passing the resulting reloc 4622 to `bfd_install_relocation'. This currently works poorly, as 4623 `bfd_install_relocation' often does the wrong thing, and instances of 4624 `tc_gen_reloc' have been written to work around the problems, which 4625 in turns makes it difficult to fix `bfd_install_relocation'. */ 4626 4627 /* If while processing a fixup, a reloc really needs to be created 4628 then it is done here. */ 4629 4630 arelent ** 4631 tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp) 4632 { 4633 static arelent * no_relocs = NULL; 4634 static arelent * relocs[MAX_RELOC_EXPANSION + 1]; 4635 arelent *reloc; 4636 4637 reloc = XNEW (arelent); 4638 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; 4639 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); 4640 4641 if (reloc->howto == (reloc_howto_type *) NULL) 4642 { 4643 as_bad_where (fixp->fx_file, fixp->fx_line, 4644 _("reloc %d not supported by object file format"), 4645 (int) fixp->fx_r_type); 4646 free (reloc); 4647 return & no_relocs; 4648 } 4649 4650 relocs[0] = reloc; 4651 relocs[1] = NULL; 4652 4653 if (fixp->fx_subsy 4654 && S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) 4655 { 4656 fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy); 4657 fixp->fx_subsy = NULL; 4658 } 4659 4660 if (fixp->fx_addsy && fixp->fx_subsy) 4661 { 4662 asection *asec, *ssec; 4663 4664 asec = S_GET_SEGMENT (fixp->fx_addsy); 4665 ssec = S_GET_SEGMENT (fixp->fx_subsy); 4666 4667 /* If we have a difference between two different, non-absolute symbols 4668 we must generate two relocs (one for each symbol) and allow the 4669 linker to resolve them - relaxation may change the distances between 4670 symbols, even local symbols defined in the same section. 4671 4672 Unfortunately we cannot do this with assembler generated local labels 4673 because there can be multiple incarnations of the same label, with 4674 exactly the same name, in any given section and the linker will have 4675 no way to identify the correct one. Instead we just have to hope 4676 that no relaxation will occur between the local label and the other 4677 symbol in the expression. 4678 4679 Similarly we have to compute differences between symbols in the .eh_frame 4680 section as the linker is not smart enough to apply relocations there 4681 before attempting to process it. */ 4682 if ((ssec != absolute_section || asec != absolute_section) 4683 && (fixp->fx_addsy != fixp->fx_subsy) 4684 && strcmp (ssec->name, ".eh_frame") != 0 4685 && ! S_IS_GAS_LOCAL (fixp->fx_addsy) 4686 && ! S_IS_GAS_LOCAL (fixp->fx_subsy)) 4687 { 4688 arelent * reloc2 = XNEW (arelent); 4689 4690 relocs[0] = reloc2; 4691 relocs[1] = reloc; 4692 4693 reloc2->address = reloc->address; 4694 reloc2->howto = bfd_reloc_type_lookup (stdoutput, 4695 BFD_RELOC_MSP430_SYM_DIFF); 4696 reloc2->addend = - S_GET_VALUE (fixp->fx_subsy); 4697 4698 if (ssec == absolute_section) 4699 reloc2->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 4700 else 4701 { 4702 reloc2->sym_ptr_ptr = XNEW (asymbol *); 4703 *reloc2->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); 4704 } 4705 4706 reloc->addend = fixp->fx_offset; 4707 if (asec == absolute_section) 4708 { 4709 reloc->addend += S_GET_VALUE (fixp->fx_addsy); 4710 reloc->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 4711 } 4712 else 4713 { 4714 reloc->sym_ptr_ptr = XNEW (asymbol *); 4715 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); 4716 } 4717 4718 fixp->fx_pcrel = 0; 4719 fixp->fx_done = 1; 4720 return relocs; 4721 } 4722 else 4723 { 4724 char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal; 4725 4726 reloc->addend = (S_GET_VALUE (fixp->fx_addsy) 4727 - S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset); 4728 4729 switch (fixp->fx_r_type) 4730 { 4731 case BFD_RELOC_8: 4732 md_number_to_chars (fixpos, reloc->addend, 1); 4733 break; 4734 4735 case BFD_RELOC_16: 4736 md_number_to_chars (fixpos, reloc->addend, 2); 4737 break; 4738 4739 case BFD_RELOC_24: 4740 md_number_to_chars (fixpos, reloc->addend, 3); 4741 break; 4742 4743 case BFD_RELOC_32: 4744 md_number_to_chars (fixpos, reloc->addend, 4); 4745 break; 4746 4747 default: 4748 reloc->sym_ptr_ptr 4749 = (asymbol **) bfd_abs_section_ptr->symbol_ptr_ptr; 4750 return relocs; 4751 } 4752 4753 free (reloc); 4754 return & no_relocs; 4755 } 4756 } 4757 else 4758 { 4759 #if 0 4760 if (fixp->fx_r_type == BFD_RELOC_MSP430X_ABS16 4761 && S_GET_SEGMENT (fixp->fx_addsy) == absolute_section) 4762 { 4763 bfd_vma amount = S_GET_VALUE (fixp->fx_addsy); 4764 char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal; 4765 4766 md_number_to_chars (fixpos, amount, 2); 4767 free (reloc); 4768 return & no_relocs; 4769 } 4770 #endif 4771 reloc->sym_ptr_ptr = XNEW (asymbol *); 4772 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); 4773 reloc->addend = fixp->fx_offset; 4774 4775 if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT 4776 || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) 4777 reloc->address = fixp->fx_offset; 4778 } 4779 4780 return relocs; 4781 } 4782 4783 int 4784 md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, 4785 asection * segment_type ATTRIBUTE_UNUSED) 4786 { 4787 if (fragP->fr_symbol && S_GET_SEGMENT (fragP->fr_symbol) == segment_type) 4788 { 4789 /* This is a jump -> pcrel mode. Nothing to do much here. 4790 Return value == 2. */ 4791 fragP->fr_subtype = 4792 ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_BITS10); 4793 } 4794 else if (fragP->fr_symbol) 4795 { 4796 /* It's got a segment, but it's not ours. Even if fr_symbol is in 4797 an absolute segment, we don't know a displacement until we link 4798 object files. So it will always be long. This also applies to 4799 labels in a subsegment of current. Liker may relax it to short 4800 jump later. Return value == 8. */ 4801 fragP->fr_subtype = 4802 ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_WORD); 4803 } 4804 else 4805 { 4806 /* We know the abs value. may be it is a jump to fixed address. 4807 Impossible in our case, cause all constants already handled. */ 4808 fragP->fr_subtype = 4809 ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_UNDEF); 4810 } 4811 4812 return md_relax_table[fragP->fr_subtype].rlx_length; 4813 } 4814 4815 void 4816 md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED, 4817 asection * sec ATTRIBUTE_UNUSED, 4818 fragS * fragP) 4819 { 4820 char * where = 0; 4821 int rela = -1; 4822 int i; 4823 struct rcodes_s * cc = NULL; 4824 struct hcodes_s * hc = NULL; 4825 4826 switch (fragP->fr_subtype) 4827 { 4828 case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_BITS10): 4829 case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_BITS10): 4830 case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_BITS10): 4831 /* We do not have to convert anything here. 4832 Just apply a fix. */ 4833 rela = BFD_RELOC_MSP430_10_PCREL; 4834 break; 4835 4836 case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_WORD): 4837 case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_UNDEF): 4838 /* Convert uncond branch jmp lab -> br lab. */ 4839 if (target_is_430x ()) 4840 cc = msp430x_rcodes + 7; 4841 else 4842 cc = msp430_rcodes + 7; 4843 where = fragP->fr_literal + fragP->fr_fix; 4844 bfd_putl16 (cc->lop0, where); 4845 rela = BFD_RELOC_MSP430_RL_PCREL; 4846 fragP->fr_fix += 2; 4847 break; 4848 4849 case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_WORD): 4850 case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_UNDEF): 4851 { 4852 /* Other simple branches. */ 4853 int insn = bfd_getl16 (fragP->fr_opcode); 4854 4855 insn &= 0xffff; 4856 /* Find actual instruction. */ 4857 if (target_is_430x ()) 4858 { 4859 for (i = 0; i < 7 && !cc; i++) 4860 if (msp430x_rcodes[i].sop == insn) 4861 cc = msp430x_rcodes + i; 4862 } 4863 else 4864 { 4865 for (i = 0; i < 7 && !cc; i++) 4866 if (msp430_rcodes[i].sop == insn) 4867 cc = & msp430_rcodes[i]; 4868 } 4869 4870 if (!cc || !cc->name) 4871 as_fatal (_("internal inconsistency problem in %s: insn %04lx"), 4872 __FUNCTION__, (long) insn); 4873 where = fragP->fr_literal + fragP->fr_fix; 4874 bfd_putl16 (cc->lop0, where); 4875 bfd_putl16 (cc->lop1, where + 2); 4876 rela = BFD_RELOC_MSP430_RL_PCREL; 4877 fragP->fr_fix += 4; 4878 } 4879 break; 4880 4881 case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_WORD): 4882 case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_UNDEF): 4883 if (target_is_430x ()) 4884 cc = msp430x_rcodes + 6; 4885 else 4886 cc = msp430_rcodes + 6; 4887 where = fragP->fr_literal + fragP->fr_fix; 4888 bfd_putl16 (cc->lop0, where); 4889 bfd_putl16 (cc->lop1, where + 2); 4890 bfd_putl16 (cc->lop2, where + 4); 4891 rela = BFD_RELOC_MSP430_RL_PCREL; 4892 fragP->fr_fix += 6; 4893 break; 4894 4895 case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10): 4896 { 4897 int insn = bfd_getl16 (fragP->fr_opcode + 2); 4898 4899 insn &= 0xffff; 4900 if (target_is_430x ()) 4901 { 4902 for (i = 0; i < 4 && !hc; i++) 4903 if (msp430x_hcodes[i].op1 == insn) 4904 hc = msp430x_hcodes + i; 4905 } 4906 else 4907 { 4908 for (i = 0; i < 4 && !hc; i++) 4909 if (msp430_hcodes[i].op1 == insn) 4910 hc = &msp430_hcodes[i]; 4911 } 4912 if (!hc || !hc->name) 4913 as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"), 4914 __FUNCTION__, (long) insn); 4915 rela = BFD_RELOC_MSP430_10_PCREL; 4916 /* Apply a fix for a first label if necessary. 4917 another fix will be applied to the next word of insn anyway. */ 4918 if (hc->tlab == 2) 4919 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, 4920 fragP->fr_offset, TRUE, rela); 4921 fragP->fr_fix += 2; 4922 } 4923 4924 break; 4925 4926 case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_WORD): 4927 case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_UNDEF): 4928 { 4929 int insn = bfd_getl16 (fragP->fr_opcode + 2); 4930 4931 insn &= 0xffff; 4932 if (target_is_430x ()) 4933 { 4934 for (i = 0; i < 4 && !hc; i++) 4935 if (msp430x_hcodes[i].op1 == insn) 4936 hc = msp430x_hcodes + i; 4937 } 4938 else 4939 { 4940 for (i = 0; i < 4 && !hc; i++) 4941 if (msp430_hcodes[i].op1 == insn) 4942 hc = & msp430_hcodes[i]; 4943 } 4944 if (!hc || !hc->name) 4945 as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"), 4946 __FUNCTION__, (long) insn); 4947 rela = BFD_RELOC_MSP430_RL_PCREL; 4948 where = fragP->fr_literal + fragP->fr_fix; 4949 bfd_putl16 (hc->lop0, where); 4950 bfd_putl16 (hc->lop1, where + 2); 4951 bfd_putl16 (hc->lop2, where + 4); 4952 fragP->fr_fix += 6; 4953 } 4954 break; 4955 4956 default: 4957 as_fatal (_("internal inconsistency problem in %s: %lx"), 4958 __FUNCTION__, (long) fragP->fr_subtype); 4959 break; 4960 } 4961 4962 /* Now apply fix. */ 4963 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, 4964 fragP->fr_offset, TRUE, rela); 4965 /* Just fixed 2 bytes. */ 4966 fragP->fr_fix += 2; 4967 } 4968 4969 /* Relax fragment. Mostly stolen from hc11 and mcore 4970 which arches I think I know. */ 4971 4972 long 4973 msp430_relax_frag (segT seg ATTRIBUTE_UNUSED, fragS * fragP, 4974 long stretch ATTRIBUTE_UNUSED) 4975 { 4976 long growth; 4977 offsetT aim = 0; 4978 symbolS *symbolP; 4979 const relax_typeS *this_type; 4980 const relax_typeS *start_type; 4981 relax_substateT next_state; 4982 relax_substateT this_state; 4983 const relax_typeS *table = md_relax_table; 4984 4985 /* Nothing to be done if the frag has already max size. */ 4986 if (RELAX_STATE (fragP->fr_subtype) == STATE_UNDEF 4987 || RELAX_STATE (fragP->fr_subtype) == STATE_WORD) 4988 return 0; 4989 4990 if (RELAX_STATE (fragP->fr_subtype) == STATE_BITS10) 4991 { 4992 symbolP = fragP->fr_symbol; 4993 if (symbol_resolved_p (symbolP)) 4994 as_fatal (_("internal inconsistency problem in %s: resolved symbol"), 4995 __FUNCTION__); 4996 /* We know the offset. calculate a distance. */ 4997 aim = S_GET_VALUE (symbolP) - fragP->fr_address - fragP->fr_fix; 4998 } 4999 5000 if (!msp430_enable_relax) 5001 { 5002 /* Relaxation is not enabled. So, make all jump as long ones 5003 by setting 'aim' to quite high value. */ 5004 aim = 0x7fff; 5005 } 5006 5007 this_state = fragP->fr_subtype; 5008 start_type = this_type = table + this_state; 5009 5010 if (aim < 0) 5011 { 5012 /* Look backwards. */ 5013 for (next_state = this_type->rlx_more; next_state;) 5014 if (aim >= this_type->rlx_backward || !this_type->rlx_backward) 5015 next_state = 0; 5016 else 5017 { 5018 /* Grow to next state. */ 5019 this_state = next_state; 5020 this_type = table + this_state; 5021 next_state = this_type->rlx_more; 5022 } 5023 } 5024 else 5025 { 5026 /* Look forwards. */ 5027 for (next_state = this_type->rlx_more; next_state;) 5028 if (aim <= this_type->rlx_forward || !this_type->rlx_forward) 5029 next_state = 0; 5030 else 5031 { 5032 /* Grow to next state. */ 5033 this_state = next_state; 5034 this_type = table + this_state; 5035 next_state = this_type->rlx_more; 5036 } 5037 } 5038 5039 growth = this_type->rlx_length - start_type->rlx_length; 5040 if (growth != 0) 5041 fragP->fr_subtype = this_state; 5042 return growth; 5043 } 5044 5045 /* Return FALSE if the fixup in fixp should be left alone and not 5046 adjusted. We return FALSE here so that linker relaxation will 5047 work. */ 5048 5049 bfd_boolean 5050 msp430_fix_adjustable (struct fix *fixp ATTRIBUTE_UNUSED) 5051 { 5052 /* If the symbol is in a non-code section then it should be OK. */ 5053 if (fixp->fx_addsy 5054 && ((S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_CODE) == 0)) 5055 return TRUE; 5056 5057 return FALSE; 5058 } 5059 5060 /* Set the contents of the .MSP430.attributes and .GNU.attributes sections. */ 5061 5062 void 5063 msp430_md_end (void) 5064 { 5065 if (check_for_nop) 5066 { 5067 if (gen_interrupt_nops) 5068 { 5069 gen_nop (); 5070 if (warn_interrupt_nops) 5071 as_warn (INSERT_NOP_AT_EOF); 5072 } 5073 else if (warn_interrupt_nops) 5074 as_warn (_(WARN_NOP_AT_EOF)); 5075 } 5076 5077 /* We have already emitted an error if any of the following attributes 5078 disagree with the attributes in the input assembly file. See 5079 msp430_object_attribute. */ 5080 bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_ISA, 5081 target_is_430x () ? OFBA_MSPABI_Val_ISA_MSP430X 5082 : OFBA_MSPABI_Val_ISA_MSP430); 5083 5084 bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_Code_Model, 5085 large_model ? OFBA_MSPABI_Val_Code_Model_LARGE 5086 : OFBA_MSPABI_Val_Code_Model_SMALL); 5087 5088 bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_Data_Model, 5089 large_model ? OFBA_MSPABI_Val_Code_Model_LARGE 5090 : OFBA_MSPABI_Val_Code_Model_SMALL); 5091 5092 /* The data region GNU attribute is ignored for the small memory model. */ 5093 if (large_model) 5094 bfd_elf_add_obj_attr_int (stdoutput, OBJ_ATTR_GNU, 5095 Tag_GNU_MSP430_Data_Region, lower_data_region_only 5096 ? Val_GNU_MSP430_Data_Region_Lower 5097 : Val_GNU_MSP430_Data_Region_Any); 5098 } 5099 5100 /* Returns FALSE if there is a msp430 specific reason why the 5101 subtraction of two same-section symbols cannot be computed by 5102 the assembler. */ 5103 5104 bfd_boolean 5105 msp430_allow_local_subtract (expressionS * left, 5106 expressionS * right, 5107 segT section) 5108 { 5109 /* If the symbols are not in a code section then they are OK. */ 5110 if ((section->flags & SEC_CODE) == 0) 5111 return TRUE; 5112 5113 if (S_IS_GAS_LOCAL (left->X_add_symbol) || S_IS_GAS_LOCAL (right->X_add_symbol)) 5114 return TRUE; 5115 5116 if (left->X_add_symbol == right->X_add_symbol) 5117 return TRUE; 5118 5119 /* We have to assume that there may be instructions between the 5120 two symbols and that relaxation may increase the distance between 5121 them. */ 5122 return FALSE; 5123 } 5124