| 1 | /* tc-msp430.c -- Assembler code for the Texas Instruments MSP430 |
| 2 | |
| 3 | Copyright (C) 2002-2021 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 htab_t 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); |
| 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_DATA_REGION 'r' |
| 689 | static bfd_boolean upper_data_region_in_use = FALSE; |
| 690 | /* The default is to use the lower region only. */ |
| 691 | static bfd_boolean lower_data_region_only = TRUE; |
| 692 | |
| 693 | /* Deprecated option, silently ignore it for compatibility with GCC <= 10. */ |
| 694 | #define OPTION_MOVE_DATA 'd' |
| 695 | |
| 696 | enum |
| 697 | { |
| 698 | OPTION_SILICON_ERRATA = OPTION_MD_BASE, |
| 699 | OPTION_SILICON_ERRATA_WARN, |
| 700 | }; |
| 701 | |
| 702 | static unsigned int silicon_errata_fix = 0; |
| 703 | static unsigned int silicon_errata_warn = 0; |
| 704 | #define SILICON_ERRATA_CPU4 (1 << 0) |
| 705 | #define SILICON_ERRATA_CPU8 (1 << 1) |
| 706 | #define SILICON_ERRATA_CPU11 (1 << 2) |
| 707 | #define SILICON_ERRATA_CPU12 (1 << 3) |
| 708 | #define SILICON_ERRATA_CPU13 (1 << 4) |
| 709 | #define SILICON_ERRATA_CPU19 (1 << 5) |
| 710 | |
| 711 | static void |
| 712 | msp430_set_arch (int option) |
| 713 | { |
| 714 | char str[32]; /* 32 for good measure. */ |
| 715 | |
| 716 | input_line_pointer = extract_word (input_line_pointer, str, 32); |
| 717 | |
| 718 | md_parse_option (option, str); |
| 719 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, |
| 720 | target_is_430x () ? bfd_mach_msp430x : bfd_mach_msp11); |
| 721 | } |
| 722 | |
| 723 | /* This is a copy of the same data structure found in gcc/config/msp430/msp430.c |
| 724 | Keep these two structures in sync. |
| 725 | The data in this structure has been extracted from version 1.194 of the |
| 726 | devices.csv file released by TI in September 2016. */ |
| 727 | |
| 728 | struct msp430_mcu_data |
| 729 | { |
| 730 | const char * name; |
| 731 | unsigned int revision; /* 0=> MSP430, 1=>MSP430X, 2=> MSP430Xv2. */ |
| 732 | unsigned int hwmpy; /* 0=>none, 1=>16-bit, 2=>16-bit w/sign extend, 4=>32-bit, 8=> 32-bit (5xx). */ |
| 733 | } |
| 734 | msp430_mcu_data [] = |
| 735 | { |
| 736 | { "cc430f5123",2,8 }, |
| 737 | { "cc430f5125",2,8 }, |
| 738 | { "cc430f5133",2,8 }, |
| 739 | { "cc430f5135",2,8 }, |
| 740 | { "cc430f5137",2,8 }, |
| 741 | { "cc430f5143",2,8 }, |
| 742 | { "cc430f5145",2,8 }, |
| 743 | { "cc430f5147",2,8 }, |
| 744 | { "cc430f6125",2,8 }, |
| 745 | { "cc430f6126",2,8 }, |
| 746 | { "cc430f6127",2,8 }, |
| 747 | { "cc430f6135",2,8 }, |
| 748 | { "cc430f6137",2,8 }, |
| 749 | { "cc430f6143",2,8 }, |
| 750 | { "cc430f6145",2,8 }, |
| 751 | { "cc430f6147",2,8 }, |
| 752 | { "msp430afe221",0,2 }, |
| 753 | { "msp430afe222",0,2 }, |
| 754 | { "msp430afe223",0,2 }, |
| 755 | { "msp430afe231",0,2 }, |
| 756 | { "msp430afe232",0,2 }, |
| 757 | { "msp430afe233",0,2 }, |
| 758 | { "msp430afe251",0,2 }, |
| 759 | { "msp430afe252",0,2 }, |
| 760 | { "msp430afe253",0,2 }, |
| 761 | { "msp430bt5190",2,8 }, |
| 762 | { "msp430c091",0,0 }, |
| 763 | { "msp430c092",0,0 }, |
| 764 | { "msp430c111",0,0 }, |
| 765 | { "msp430c1111",0,0 }, |
| 766 | { "msp430c112",0,0 }, |
| 767 | { "msp430c1121",0,0 }, |
| 768 | { "msp430c1331",0,0 }, |
| 769 | { "msp430c1351",0,0 }, |
| 770 | { "msp430c311s",0,0 }, |
| 771 | { "msp430c312",0,0 }, |
| 772 | { "msp430c313",0,0 }, |
| 773 | { "msp430c314",0,0 }, |
| 774 | { "msp430c315",0,0 }, |
| 775 | { "msp430c323",0,0 }, |
| 776 | { "msp430c325",0,0 }, |
| 777 | { "msp430c336",0,1 }, |
| 778 | { "msp430c337",0,1 }, |
| 779 | { "msp430c412",0,0 }, |
| 780 | { "msp430c413",0,0 }, |
| 781 | { "msp430cg4616",1,1 }, |
| 782 | { "msp430cg4617",1,1 }, |
| 783 | { "msp430cg4618",1,1 }, |
| 784 | { "msp430cg4619",1,1 }, |
| 785 | { "msp430e112",0,0 }, |
| 786 | { "msp430e313",0,0 }, |
| 787 | { "msp430e315",0,0 }, |
| 788 | { "msp430e325",0,0 }, |
| 789 | { "msp430e337",0,1 }, |
| 790 | { "msp430f110",0,0 }, |
| 791 | { "msp430f1101",0,0 }, |
| 792 | { "msp430f1101a",0,0 }, |
| 793 | { "msp430f1111",0,0 }, |
| 794 | { "msp430f1111a",0,0 }, |
| 795 | { "msp430f112",0,0 }, |
| 796 | { "msp430f1121",0,0 }, |
| 797 | { "msp430f1121a",0,0 }, |
| 798 | { "msp430f1122",0,0 }, |
| 799 | { "msp430f1132",0,0 }, |
| 800 | { "msp430f122",0,0 }, |
| 801 | { "msp430f1222",0,0 }, |
| 802 | { "msp430f123",0,0 }, |
| 803 | { "msp430f1232",0,0 }, |
| 804 | { "msp430f133",0,0 }, |
| 805 | { "msp430f135",0,0 }, |
| 806 | { "msp430f147",0,1 }, |
| 807 | { "msp430f1471",0,1 }, |
| 808 | { "msp430f148",0,1 }, |
| 809 | { "msp430f1481",0,1 }, |
| 810 | { "msp430f149",0,1 }, |
| 811 | { "msp430f1491",0,1 }, |
| 812 | { "msp430f155",0,0 }, |
| 813 | { "msp430f156",0,0 }, |
| 814 | { "msp430f157",0,0 }, |
| 815 | { "msp430f1610",0,1 }, |
| 816 | { "msp430f1611",0,1 }, |
| 817 | { "msp430f1612",0,1 }, |
| 818 | { "msp430f167",0,1 }, |
| 819 | { "msp430f168",0,1 }, |
| 820 | { "msp430f169",0,1 }, |
| 821 | { "msp430f2001",0,0 }, |
| 822 | { "msp430f2002",0,0 }, |
| 823 | { "msp430f2003",0,0 }, |
| 824 | { "msp430f2011",0,0 }, |
| 825 | { "msp430f2012",0,0 }, |
| 826 | { "msp430f2013",0,0 }, |
| 827 | { "msp430f2101",0,0 }, |
| 828 | { "msp430f2111",0,0 }, |
| 829 | { "msp430f2112",0,0 }, |
| 830 | { "msp430f2121",0,0 }, |
| 831 | { "msp430f2122",0,0 }, |
| 832 | { "msp430f2131",0,0 }, |
| 833 | { "msp430f2132",0,0 }, |
| 834 | { "msp430f2232",0,0 }, |
| 835 | { "msp430f2234",0,0 }, |
| 836 | { "msp430f2252",0,0 }, |
| 837 | { "msp430f2254",0,0 }, |
| 838 | { "msp430f2272",0,0 }, |
| 839 | { "msp430f2274",0,0 }, |
| 840 | { "msp430f233",0,2 }, |
| 841 | { "msp430f2330",0,2 }, |
| 842 | { "msp430f235",0,2 }, |
| 843 | { "msp430f2350",0,2 }, |
| 844 | { "msp430f2370",0,2 }, |
| 845 | { "msp430f2410",0,2 }, |
| 846 | { "msp430f2416",1,2 }, |
| 847 | { "msp430f2417",1,2 }, |
| 848 | { "msp430f2418",1,2 }, |
| 849 | { "msp430f2419",1,2 }, |
| 850 | { "msp430f247",0,2 }, |
| 851 | { "msp430f2471",0,2 }, |
| 852 | { "msp430f248",0,2 }, |
| 853 | { "msp430f2481",0,2 }, |
| 854 | { "msp430f249",0,2 }, |
| 855 | { "msp430f2491",0,2 }, |
| 856 | { "msp430f2616",1,2 }, |
| 857 | { "msp430f2617",1,2 }, |
| 858 | { "msp430f2618",1,2 }, |
| 859 | { "msp430f2619",1,2 }, |
| 860 | { "msp430f412",0,0 }, |
| 861 | { "msp430f413",0,0 }, |
| 862 | { "msp430f4132",0,0 }, |
| 863 | { "msp430f415",0,0 }, |
| 864 | { "msp430f4152",0,0 }, |
| 865 | { "msp430f417",0,0 }, |
| 866 | { "msp430f423",0,1 }, |
| 867 | { "msp430f423a",0,1 }, |
| 868 | { "msp430f425",0,1 }, |
| 869 | { "msp430f4250",0,0 }, |
| 870 | { "msp430f425a",0,1 }, |
| 871 | { "msp430f4260",0,0 }, |
| 872 | { "msp430f427",0,1 }, |
| 873 | { "msp430f4270",0,0 }, |
| 874 | { "msp430f427a",0,1 }, |
| 875 | { "msp430f435",0,0 }, |
| 876 | { "msp430f4351",0,0 }, |
| 877 | { "msp430f436",0,0 }, |
| 878 | { "msp430f4361",0,0 }, |
| 879 | { "msp430f437",0,0 }, |
| 880 | { "msp430f4371",0,0 }, |
| 881 | { "msp430f438",0,0 }, |
| 882 | { "msp430f439",0,0 }, |
| 883 | { "msp430f447",0,1 }, |
| 884 | { "msp430f448",0,1 }, |
| 885 | { "msp430f4481",0,1 }, |
| 886 | { "msp430f449",0,1 }, |
| 887 | { "msp430f4491",0,1 }, |
| 888 | { "msp430f4616",1,1 }, |
| 889 | { "msp430f46161",1,1 }, |
| 890 | { "msp430f4617",1,1 }, |
| 891 | { "msp430f46171",1,1 }, |
| 892 | { "msp430f4618",1,1 }, |
| 893 | { "msp430f46181",1,1 }, |
| 894 | { "msp430f4619",1,1 }, |
| 895 | { "msp430f46191",1,1 }, |
| 896 | { "msp430f47126",1,4 }, |
| 897 | { "msp430f47127",1,4 }, |
| 898 | { "msp430f47163",1,4 }, |
| 899 | { "msp430f47166",1,4 }, |
| 900 | { "msp430f47167",1,4 }, |
| 901 | { "msp430f47173",1,4 }, |
| 902 | { "msp430f47176",1,4 }, |
| 903 | { "msp430f47177",1,4 }, |
| 904 | { "msp430f47183",1,4 }, |
| 905 | { "msp430f47186",1,4 }, |
| 906 | { "msp430f47187",1,4 }, |
| 907 | { "msp430f47193",1,4 }, |
| 908 | { "msp430f47196",1,4 }, |
| 909 | { "msp430f47197",1,4 }, |
| 910 | { "msp430f477",0,0 }, |
| 911 | { "msp430f478",0,0 }, |
| 912 | { "msp430f4783",0,4 }, |
| 913 | { "msp430f4784",0,4 }, |
| 914 | { "msp430f479",0,0 }, |
| 915 | { "msp430f4793",0,4 }, |
| 916 | { "msp430f4794",0,4 }, |
| 917 | { "msp430f5131",2,8 }, |
| 918 | { "msp430f5132",2,8 }, |
| 919 | { "msp430f5151",2,8 }, |
| 920 | { "msp430f5152",2,8 }, |
| 921 | { "msp430f5171",2,8 }, |
| 922 | { "msp430f5172",2,8 }, |
| 923 | { "msp430f5212",2,8 }, |
| 924 | { "msp430f5213",2,8 }, |
| 925 | { "msp430f5214",2,8 }, |
| 926 | { "msp430f5217",2,8 }, |
| 927 | { "msp430f5218",2,8 }, |
| 928 | { "msp430f5219",2,8 }, |
| 929 | { "msp430f5222",2,8 }, |
| 930 | { "msp430f5223",2,8 }, |
| 931 | { "msp430f5224",2,8 }, |
| 932 | { "msp430f5227",2,8 }, |
| 933 | { "msp430f5228",2,8 }, |
| 934 | { "msp430f5229",2,8 }, |
| 935 | { "msp430f5232",2,8 }, |
| 936 | { "msp430f5234",2,8 }, |
| 937 | { "msp430f5237",2,8 }, |
| 938 | { "msp430f5239",2,8 }, |
| 939 | { "msp430f5242",2,8 }, |
| 940 | { "msp430f5244",2,8 }, |
| 941 | { "msp430f5247",2,8 }, |
| 942 | { "msp430f5249",2,8 }, |
| 943 | { "msp430f5252",2,8 }, |
| 944 | { "msp430f5253",2,8 }, |
| 945 | { "msp430f5254",2,8 }, |
| 946 | { "msp430f5255",2,8 }, |
| 947 | { "msp430f5256",2,8 }, |
| 948 | { "msp430f5257",2,8 }, |
| 949 | { "msp430f5258",2,8 }, |
| 950 | { "msp430f5259",2,8 }, |
| 951 | { "msp430f5304",2,8 }, |
| 952 | { "msp430f5308",2,8 }, |
| 953 | { "msp430f5309",2,8 }, |
| 954 | { "msp430f5310",2,8 }, |
| 955 | { "msp430f5324",2,8 }, |
| 956 | { "msp430f5325",2,8 }, |
| 957 | { "msp430f5326",2,8 }, |
| 958 | { "msp430f5327",2,8 }, |
| 959 | { "msp430f5328",2,8 }, |
| 960 | { "msp430f5329",2,8 }, |
| 961 | { "msp430f5333",2,8 }, |
| 962 | { "msp430f5335",2,8 }, |
| 963 | { "msp430f5336",2,8 }, |
| 964 | { "msp430f5338",2,8 }, |
| 965 | { "msp430f5340",2,8 }, |
| 966 | { "msp430f5341",2,8 }, |
| 967 | { "msp430f5342",2,8 }, |
| 968 | { "msp430f5358",2,8 }, |
| 969 | { "msp430f5359",2,8 }, |
| 970 | { "msp430f5418",2,8 }, |
| 971 | { "msp430f5418a",2,8 }, |
| 972 | { "msp430f5419",2,8 }, |
| 973 | { "msp430f5419a",2,8 }, |
| 974 | { "msp430f5435",2,8 }, |
| 975 | { "msp430f5435a",2,8 }, |
| 976 | { "msp430f5436",2,8 }, |
| 977 | { "msp430f5436a",2,8 }, |
| 978 | { "msp430f5437",2,8 }, |
| 979 | { "msp430f5437a",2,8 }, |
| 980 | { "msp430f5438",2,8 }, |
| 981 | { "msp430f5438a",2,8 }, |
| 982 | { "msp430f5500",2,8 }, |
| 983 | { "msp430f5501",2,8 }, |
| 984 | { "msp430f5502",2,8 }, |
| 985 | { "msp430f5503",2,8 }, |
| 986 | { "msp430f5504",2,8 }, |
| 987 | { "msp430f5505",2,8 }, |
| 988 | { "msp430f5506",2,8 }, |
| 989 | { "msp430f5507",2,8 }, |
| 990 | { "msp430f5508",2,8 }, |
| 991 | { "msp430f5509",2,8 }, |
| 992 | { "msp430f5510",2,8 }, |
| 993 | { "msp430f5513",2,8 }, |
| 994 | { "msp430f5514",2,8 }, |
| 995 | { "msp430f5515",2,8 }, |
| 996 | { "msp430f5517",2,8 }, |
| 997 | { "msp430f5519",2,8 }, |
| 998 | { "msp430f5521",2,8 }, |
| 999 | { "msp430f5522",2,8 }, |
| 1000 | { "msp430f5524",2,8 }, |
| 1001 | { "msp430f5525",2,8 }, |
| 1002 | { "msp430f5526",2,8 }, |
| 1003 | { "msp430f5527",2,8 }, |
| 1004 | { "msp430f5528",2,8 }, |
| 1005 | { "msp430f5529",2,8 }, |
| 1006 | { "msp430f5630",2,8 }, |
| 1007 | { "msp430f5631",2,8 }, |
| 1008 | { "msp430f5632",2,8 }, |
| 1009 | { "msp430f5633",2,8 }, |
| 1010 | { "msp430f5634",2,8 }, |
| 1011 | { "msp430f5635",2,8 }, |
| 1012 | { "msp430f5636",2,8 }, |
| 1013 | { "msp430f5637",2,8 }, |
| 1014 | { "msp430f5638",2,8 }, |
| 1015 | { "msp430f5658",2,8 }, |
| 1016 | { "msp430f5659",2,8 }, |
| 1017 | { "msp430f5xx_6xxgeneric",2,8 }, |
| 1018 | { "msp430f6433",2,8 }, |
| 1019 | { "msp430f6435",2,8 }, |
| 1020 | { "msp430f6436",2,8 }, |
| 1021 | { "msp430f6438",2,8 }, |
| 1022 | { "msp430f6458",2,8 }, |
| 1023 | { "msp430f6459",2,8 }, |
| 1024 | { "msp430f6630",2,8 }, |
| 1025 | { "msp430f6631",2,8 }, |
| 1026 | { "msp430f6632",2,8 }, |
| 1027 | { "msp430f6633",2,8 }, |
| 1028 | { "msp430f6634",2,8 }, |
| 1029 | { "msp430f6635",2,8 }, |
| 1030 | { "msp430f6636",2,8 }, |
| 1031 | { "msp430f6637",2,8 }, |
| 1032 | { "msp430f6638",2,8 }, |
| 1033 | { "msp430f6658",2,8 }, |
| 1034 | { "msp430f6659",2,8 }, |
| 1035 | { "msp430f6720",2,8 }, |
| 1036 | { "msp430f6720a",2,8 }, |
| 1037 | { "msp430f6721",2,8 }, |
| 1038 | { "msp430f6721a",2,8 }, |
| 1039 | { "msp430f6723",2,8 }, |
| 1040 | { "msp430f6723a",2,8 }, |
| 1041 | { "msp430f6724",2,8 }, |
| 1042 | { "msp430f6724a",2,8 }, |
| 1043 | { "msp430f6725",2,8 }, |
| 1044 | { "msp430f6725a",2,8 }, |
| 1045 | { "msp430f6726",2,8 }, |
| 1046 | { "msp430f6726a",2,8 }, |
| 1047 | { "msp430f6730",2,8 }, |
| 1048 | { "msp430f6730a",2,8 }, |
| 1049 | { "msp430f6731",2,8 }, |
| 1050 | { "msp430f6731a",2,8 }, |
| 1051 | { "msp430f6733",2,8 }, |
| 1052 | { "msp430f6733a",2,8 }, |
| 1053 | { "msp430f6734",2,8 }, |
| 1054 | { "msp430f6734a",2,8 }, |
| 1055 | { "msp430f6735",2,8 }, |
| 1056 | { "msp430f6735a",2,8 }, |
| 1057 | { "msp430f6736",2,8 }, |
| 1058 | { "msp430f6736a",2,8 }, |
| 1059 | { "msp430f6745",2,8 }, |
| 1060 | { "msp430f67451",2,8 }, |
| 1061 | { "msp430f67451a",2,8 }, |
| 1062 | { "msp430f6745a",2,8 }, |
| 1063 | { "msp430f6746",2,8 }, |
| 1064 | { "msp430f67461",2,8 }, |
| 1065 | { "msp430f67461a",2,8 }, |
| 1066 | { "msp430f6746a",2,8 }, |
| 1067 | { "msp430f6747",2,8 }, |
| 1068 | { "msp430f67471",2,8 }, |
| 1069 | { "msp430f67471a",2,8 }, |
| 1070 | { "msp430f6747a",2,8 }, |
| 1071 | { "msp430f6748",2,8 }, |
| 1072 | { "msp430f67481",2,8 }, |
| 1073 | { "msp430f67481a",2,8 }, |
| 1074 | { "msp430f6748a",2,8 }, |
| 1075 | { "msp430f6749",2,8 }, |
| 1076 | { "msp430f67491",2,8 }, |
| 1077 | { "msp430f67491a",2,8 }, |
| 1078 | { "msp430f6749a",2,8 }, |
| 1079 | { "msp430f67621",2,8 }, |
| 1080 | { "msp430f67621a",2,8 }, |
| 1081 | { "msp430f67641",2,8 }, |
| 1082 | { "msp430f67641a",2,8 }, |
| 1083 | { "msp430f6765",2,8 }, |
| 1084 | { "msp430f67651",2,8 }, |
| 1085 | { "msp430f67651a",2,8 }, |
| 1086 | { "msp430f6765a",2,8 }, |
| 1087 | { "msp430f6766",2,8 }, |
| 1088 | { "msp430f67661",2,8 }, |
| 1089 | { "msp430f67661a",2,8 }, |
| 1090 | { "msp430f6766a",2,8 }, |
| 1091 | { "msp430f6767",2,8 }, |
| 1092 | { "msp430f67671",2,8 }, |
| 1093 | { "msp430f67671a",2,8 }, |
| 1094 | { "msp430f6767a",2,8 }, |
| 1095 | { "msp430f6768",2,8 }, |
| 1096 | { "msp430f67681",2,8 }, |
| 1097 | { "msp430f67681a",2,8 }, |
| 1098 | { "msp430f6768a",2,8 }, |
| 1099 | { "msp430f6769",2,8 }, |
| 1100 | { "msp430f67691",2,8 }, |
| 1101 | { "msp430f67691a",2,8 }, |
| 1102 | { "msp430f6769a",2,8 }, |
| 1103 | { "msp430f6775",2,8 }, |
| 1104 | { "msp430f67751",2,8 }, |
| 1105 | { "msp430f67751a",2,8 }, |
| 1106 | { "msp430f6775a",2,8 }, |
| 1107 | { "msp430f6776",2,8 }, |
| 1108 | { "msp430f67761",2,8 }, |
| 1109 | { "msp430f67761a",2,8 }, |
| 1110 | { "msp430f6776a",2,8 }, |
| 1111 | { "msp430f6777",2,8 }, |
| 1112 | { "msp430f67771",2,8 }, |
| 1113 | { "msp430f67771a",2,8 }, |
| 1114 | { "msp430f6777a",2,8 }, |
| 1115 | { "msp430f6778",2,8 }, |
| 1116 | { "msp430f67781",2,8 }, |
| 1117 | { "msp430f67781a",2,8 }, |
| 1118 | { "msp430f6778a",2,8 }, |
| 1119 | { "msp430f6779",2,8 }, |
| 1120 | { "msp430f67791",2,8 }, |
| 1121 | { "msp430f67791a",2,8 }, |
| 1122 | { "msp430f6779a",2,8 }, |
| 1123 | { "msp430fe423",0,0 }, |
| 1124 | { "msp430fe4232",0,0 }, |
| 1125 | { "msp430fe423a",0,0 }, |
| 1126 | { "msp430fe4242",0,0 }, |
| 1127 | { "msp430fe425",0,0 }, |
| 1128 | { "msp430fe4252",0,0 }, |
| 1129 | { "msp430fe425a",0,0 }, |
| 1130 | { "msp430fe427",0,0 }, |
| 1131 | { "msp430fe4272",0,0 }, |
| 1132 | { "msp430fe427a",0,0 }, |
| 1133 | { "msp430fg4250",0,0 }, |
| 1134 | { "msp430fg4260",0,0 }, |
| 1135 | { "msp430fg4270",0,0 }, |
| 1136 | { "msp430fg437",0,0 }, |
| 1137 | { "msp430fg438",0,0 }, |
| 1138 | { "msp430fg439",0,0 }, |
| 1139 | { "msp430fg4616",1,1 }, |
| 1140 | { "msp430fg4617",1,1 }, |
| 1141 | { "msp430fg4618",1,1 }, |
| 1142 | { "msp430fg4619",1,1 }, |
| 1143 | { "msp430fg477",0,0 }, |
| 1144 | { "msp430fg478",0,0 }, |
| 1145 | { "msp430fg479",0,0 }, |
| 1146 | { "msp430fg6425",2,8 }, |
| 1147 | { "msp430fg6426",2,8 }, |
| 1148 | { "msp430fg6625",2,8 }, |
| 1149 | { "msp430fg6626",2,8 }, |
| 1150 | { "msp430fr2032",2,0 }, |
| 1151 | { "msp430fr2033",2,0 }, |
| 1152 | { "msp430fr2110",2,0 }, |
| 1153 | { "msp430fr2111",2,0 }, |
| 1154 | { "msp430fr2310",2,0 }, |
| 1155 | { "msp430fr2311",2,0 }, |
| 1156 | { "msp430fr2433",2,8 }, |
| 1157 | { "msp430fr2532",2,8 }, |
| 1158 | { "msp430fr2533",2,8 }, |
| 1159 | { "msp430fr2632",2,8 }, |
| 1160 | { "msp430fr2633",2,8 }, |
| 1161 | { "msp430fr2xx_4xxgeneric",2,8 }, |
| 1162 | { "msp430fr4131",2,0 }, |
| 1163 | { "msp430fr4132",2,0 }, |
| 1164 | { "msp430fr4133",2,0 }, |
| 1165 | { "msp430fr5720",2,8 }, |
| 1166 | { "msp430fr5721",2,8 }, |
| 1167 | { "msp430fr5722",2,8 }, |
| 1168 | { "msp430fr5723",2,8 }, |
| 1169 | { "msp430fr5724",2,8 }, |
| 1170 | { "msp430fr5725",2,8 }, |
| 1171 | { "msp430fr5726",2,8 }, |
| 1172 | { "msp430fr5727",2,8 }, |
| 1173 | { "msp430fr5728",2,8 }, |
| 1174 | { "msp430fr5729",2,8 }, |
| 1175 | { "msp430fr5730",2,8 }, |
| 1176 | { "msp430fr5731",2,8 }, |
| 1177 | { "msp430fr5732",2,8 }, |
| 1178 | { "msp430fr5733",2,8 }, |
| 1179 | { "msp430fr5734",2,8 }, |
| 1180 | { "msp430fr5735",2,8 }, |
| 1181 | { "msp430fr5736",2,8 }, |
| 1182 | { "msp430fr5737",2,8 }, |
| 1183 | { "msp430fr5738",2,8 }, |
| 1184 | { "msp430fr5739",2,8 }, |
| 1185 | { "msp430fr57xxgeneric",2,8 }, |
| 1186 | { "msp430fr5847",2,8 }, |
| 1187 | { "msp430fr58471",2,8 }, |
| 1188 | { "msp430fr5848",2,8 }, |
| 1189 | { "msp430fr5849",2,8 }, |
| 1190 | { "msp430fr5857",2,8 }, |
| 1191 | { "msp430fr5858",2,8 }, |
| 1192 | { "msp430fr5859",2,8 }, |
| 1193 | { "msp430fr5867",2,8 }, |
| 1194 | { "msp430fr58671",2,8 }, |
| 1195 | { "msp430fr5868",2,8 }, |
| 1196 | { "msp430fr5869",2,8 }, |
| 1197 | { "msp430fr5870",2,8 }, |
| 1198 | { "msp430fr5872",2,8 }, |
| 1199 | { "msp430fr58721",2,8 }, |
| 1200 | { "msp430fr5887",2,8 }, |
| 1201 | { "msp430fr5888",2,8 }, |
| 1202 | { "msp430fr5889",2,8 }, |
| 1203 | { "msp430fr58891",2,8 }, |
| 1204 | { "msp430fr5922",2,8 }, |
| 1205 | { "msp430fr59221",2,8 }, |
| 1206 | { "msp430fr5947",2,8 }, |
| 1207 | { "msp430fr59471",2,8 }, |
| 1208 | { "msp430fr5948",2,8 }, |
| 1209 | { "msp430fr5949",2,8 }, |
| 1210 | { "msp430fr5957",2,8 }, |
| 1211 | { "msp430fr5958",2,8 }, |
| 1212 | { "msp430fr5959",2,8 }, |
| 1213 | { "msp430fr5962",2,8 }, |
| 1214 | { "msp430fr5964",2,8 }, |
| 1215 | { "msp430fr5967",2,8 }, |
| 1216 | { "msp430fr5968",2,8 }, |
| 1217 | { "msp430fr5969",2,8 }, |
| 1218 | { "msp430fr59691",2,8 }, |
| 1219 | { "msp430fr5970",2,8 }, |
| 1220 | { "msp430fr5972",2,8 }, |
| 1221 | { "msp430fr59721",2,8 }, |
| 1222 | { "msp430fr5986",2,8 }, |
| 1223 | { "msp430fr5987",2,8 }, |
| 1224 | { "msp430fr5988",2,8 }, |
| 1225 | { "msp430fr5989",2,8 }, |
| 1226 | { "msp430fr59891",2,8 }, |
| 1227 | { "msp430fr5992",2,8 }, |
| 1228 | { "msp430fr5994",2,8 }, |
| 1229 | { "msp430fr59941",2,8 }, |
| 1230 | { "msp430fr5xx_6xxgeneric",2,8 }, |
| 1231 | { "msp430fr6820",2,8 }, |
| 1232 | { "msp430fr6822",2,8 }, |
| 1233 | { "msp430fr68221",2,8 }, |
| 1234 | { "msp430fr6870",2,8 }, |
| 1235 | { "msp430fr6872",2,8 }, |
| 1236 | { "msp430fr68721",2,8 }, |
| 1237 | { "msp430fr6877",2,8 }, |
| 1238 | { "msp430fr6879",2,8 }, |
| 1239 | { "msp430fr68791",2,8 }, |
| 1240 | { "msp430fr6887",2,8 }, |
| 1241 | { "msp430fr6888",2,8 }, |
| 1242 | { "msp430fr6889",2,8 }, |
| 1243 | { "msp430fr68891",2,8 }, |
| 1244 | { "msp430fr6920",2,8 }, |
| 1245 | { "msp430fr6922",2,8 }, |
| 1246 | { "msp430fr69221",2,8 }, |
| 1247 | { "msp430fr6927",2,8 }, |
| 1248 | { "msp430fr69271",2,8 }, |
| 1249 | { "msp430fr6928",2,8 }, |
| 1250 | { "msp430fr6970",2,8 }, |
| 1251 | { "msp430fr6972",2,8 }, |
| 1252 | { "msp430fr69721",2,8 }, |
| 1253 | { "msp430fr6977",2,8 }, |
| 1254 | { "msp430fr6979",2,8 }, |
| 1255 | { "msp430fr69791",2,8 }, |
| 1256 | { "msp430fr6987",2,8 }, |
| 1257 | { "msp430fr6988",2,8 }, |
| 1258 | { "msp430fr6989",2,8 }, |
| 1259 | { "msp430fr69891",2,8 }, |
| 1260 | { "msp430fw423",0,0 }, |
| 1261 | { "msp430fw425",0,0 }, |
| 1262 | { "msp430fw427",0,0 }, |
| 1263 | { "msp430fw428",0,0 }, |
| 1264 | { "msp430fw429",0,0 }, |
| 1265 | { "msp430g2001",0,0 }, |
| 1266 | { "msp430g2101",0,0 }, |
| 1267 | { "msp430g2102",0,0 }, |
| 1268 | { "msp430g2111",0,0 }, |
| 1269 | { "msp430g2112",0,0 }, |
| 1270 | { "msp430g2113",0,0 }, |
| 1271 | { "msp430g2121",0,0 }, |
| 1272 | { "msp430g2131",0,0 }, |
| 1273 | { "msp430g2132",0,0 }, |
| 1274 | { "msp430g2152",0,0 }, |
| 1275 | { "msp430g2153",0,0 }, |
| 1276 | { "msp430g2201",0,0 }, |
| 1277 | { "msp430g2202",0,0 }, |
| 1278 | { "msp430g2203",0,0 }, |
| 1279 | { "msp430g2210",0,0 }, |
| 1280 | { "msp430g2211",0,0 }, |
| 1281 | { "msp430g2212",0,0 }, |
| 1282 | { "msp430g2213",0,0 }, |
| 1283 | { "msp430g2221",0,0 }, |
| 1284 | { "msp430g2230",0,0 }, |
| 1285 | { "msp430g2231",0,0 }, |
| 1286 | { "msp430g2232",0,0 }, |
| 1287 | { "msp430g2233",0,0 }, |
| 1288 | { "msp430g2252",0,0 }, |
| 1289 | { "msp430g2253",0,0 }, |
| 1290 | { "msp430g2302",0,0 }, |
| 1291 | { "msp430g2303",0,0 }, |
| 1292 | { "msp430g2312",0,0 }, |
| 1293 | { "msp430g2313",0,0 }, |
| 1294 | { "msp430g2332",0,0 }, |
| 1295 | { "msp430g2333",0,0 }, |
| 1296 | { "msp430g2352",0,0 }, |
| 1297 | { "msp430g2353",0,0 }, |
| 1298 | { "msp430g2402",0,0 }, |
| 1299 | { "msp430g2403",0,0 }, |
| 1300 | { "msp430g2412",0,0 }, |
| 1301 | { "msp430g2413",0,0 }, |
| 1302 | { "msp430g2432",0,0 }, |
| 1303 | { "msp430g2433",0,0 }, |
| 1304 | { "msp430g2444",0,0 }, |
| 1305 | { "msp430g2452",0,0 }, |
| 1306 | { "msp430g2453",0,0 }, |
| 1307 | { "msp430g2513",0,0 }, |
| 1308 | { "msp430g2533",0,0 }, |
| 1309 | { "msp430g2544",0,0 }, |
| 1310 | { "msp430g2553",0,0 }, |
| 1311 | { "msp430g2744",0,0 }, |
| 1312 | { "msp430g2755",0,0 }, |
| 1313 | { "msp430g2855",0,0 }, |
| 1314 | { "msp430g2955",0,0 }, |
| 1315 | { "msp430i2020",0,2 }, |
| 1316 | { "msp430i2021",0,2 }, |
| 1317 | { "msp430i2030",0,2 }, |
| 1318 | { "msp430i2031",0,2 }, |
| 1319 | { "msp430i2040",0,2 }, |
| 1320 | { "msp430i2041",0,2 }, |
| 1321 | { "msp430i2xxgeneric",0,2 }, |
| 1322 | { "msp430l092",0,0 }, |
| 1323 | { "msp430p112",0,0 }, |
| 1324 | { "msp430p313",0,0 }, |
| 1325 | { "msp430p315",0,0 }, |
| 1326 | { "msp430p315s",0,0 }, |
| 1327 | { "msp430p325",0,0 }, |
| 1328 | { "msp430p337",0,1 }, |
| 1329 | { "msp430sl5438a",2,8 }, |
| 1330 | { "msp430tch5e",0,0 }, |
| 1331 | { "msp430xgeneric",2,8 }, |
| 1332 | { "rf430f5144",2,8 }, |
| 1333 | { "rf430f5155",2,8 }, |
| 1334 | { "rf430f5175",2,8 }, |
| 1335 | { "rf430frl152h",0,0 }, |
| 1336 | { "rf430frl152h_rom",0,0 }, |
| 1337 | { "rf430frl153h",0,0 }, |
| 1338 | { "rf430frl153h_rom",0,0 }, |
| 1339 | { "rf430frl154h",0,0 }, |
| 1340 | { "rf430frl154h_rom",0,0 } |
| 1341 | }; |
| 1342 | |
| 1343 | int |
| 1344 | md_parse_option (int c, const char * arg) |
| 1345 | { |
| 1346 | switch (c) |
| 1347 | { |
| 1348 | case OPTION_SILICON_ERRATA: |
| 1349 | case OPTION_SILICON_ERRATA_WARN: |
| 1350 | { |
| 1351 | signed int i; |
| 1352 | const struct |
| 1353 | { |
| 1354 | const char * name; |
| 1355 | unsigned int length; |
| 1356 | unsigned int bitfield; |
| 1357 | } erratas[] = |
| 1358 | { |
| 1359 | { STRING_COMMA_LEN ("cpu4"), SILICON_ERRATA_CPU4 }, |
| 1360 | { STRING_COMMA_LEN ("cpu8"), SILICON_ERRATA_CPU8 }, |
| 1361 | { STRING_COMMA_LEN ("cpu11"), SILICON_ERRATA_CPU11 }, |
| 1362 | { STRING_COMMA_LEN ("cpu12"), SILICON_ERRATA_CPU12 }, |
| 1363 | { STRING_COMMA_LEN ("cpu13"), SILICON_ERRATA_CPU13 }, |
| 1364 | { STRING_COMMA_LEN ("cpu19"), SILICON_ERRATA_CPU19 }, |
| 1365 | }; |
| 1366 | |
| 1367 | do |
| 1368 | { |
| 1369 | for (i = ARRAY_SIZE (erratas); i--;) |
| 1370 | if (strncasecmp (arg, erratas[i].name, erratas[i].length) == 0) |
| 1371 | { |
| 1372 | if (c == OPTION_SILICON_ERRATA) |
| 1373 | silicon_errata_fix |= erratas[i].bitfield; |
| 1374 | else |
| 1375 | silicon_errata_warn |= erratas[i].bitfield; |
| 1376 | arg += erratas[i].length; |
| 1377 | break; |
| 1378 | } |
| 1379 | if (i < 0) |
| 1380 | { |
| 1381 | as_warn (_("Unrecognised CPU errata name starting here: %s"), arg); |
| 1382 | break; |
| 1383 | } |
| 1384 | if (*arg == 0) |
| 1385 | break; |
| 1386 | if (*arg != ',') |
| 1387 | as_warn (_("Expecting comma after CPU errata name, not: %s"), arg); |
| 1388 | else |
| 1389 | arg ++; |
| 1390 | } |
| 1391 | while (*arg != 0); |
| 1392 | } |
| 1393 | return 1; |
| 1394 | |
| 1395 | case OPTION_MMCU: |
| 1396 | if (arg == NULL) |
| 1397 | as_fatal (_("MCU option requires a name\n")); |
| 1398 | |
| 1399 | if (strcasecmp ("msp430", arg) == 0) |
| 1400 | selected_isa = MSP_ISA_430; |
| 1401 | else if (strcasecmp ("msp430xv2", arg) == 0) |
| 1402 | selected_isa = MSP_ISA_430Xv2; |
| 1403 | else if (strcasecmp ("msp430x", arg) == 0) |
| 1404 | selected_isa = MSP_ISA_430X; |
| 1405 | else |
| 1406 | { |
| 1407 | int i; |
| 1408 | |
| 1409 | for (i = ARRAY_SIZE (msp430_mcu_data); i--;) |
| 1410 | if (strcasecmp (msp430_mcu_data[i].name, arg) == 0) |
| 1411 | { |
| 1412 | switch (msp430_mcu_data[i].revision) |
| 1413 | { |
| 1414 | case 0: selected_isa = MSP_ISA_430; break; |
| 1415 | case 1: selected_isa = MSP_ISA_430X; break; |
| 1416 | case 2: selected_isa = MSP_ISA_430Xv2; break; |
| 1417 | } |
| 1418 | break; |
| 1419 | } |
| 1420 | } |
| 1421 | /* It is not an error if we do not match the MCU name. */ |
| 1422 | return 1; |
| 1423 | |
| 1424 | case OPTION_MCPU: |
| 1425 | if (strcmp (arg, "430") == 0 |
| 1426 | || strcasecmp (arg, "msp430") == 0) |
| 1427 | selected_isa = MSP_ISA_430; |
| 1428 | else if (strcasecmp (arg, "430x") == 0 |
| 1429 | || strcasecmp (arg, "msp430x") == 0) |
| 1430 | selected_isa = MSP_ISA_430X; |
| 1431 | else if (strcasecmp (arg, "430xv2") == 0 |
| 1432 | || strcasecmp (arg, "msp430xv2") == 0) |
| 1433 | selected_isa = MSP_ISA_430Xv2; |
| 1434 | else |
| 1435 | as_fatal (_("unrecognised argument to -mcpu option '%s'"), arg); |
| 1436 | return 1; |
| 1437 | |
| 1438 | case OPTION_RELAX: |
| 1439 | msp430_enable_relax = 1; |
| 1440 | return 1; |
| 1441 | |
| 1442 | case OPTION_POLYMORPHS: |
| 1443 | msp430_enable_polys = 1; |
| 1444 | return 1; |
| 1445 | |
| 1446 | case OPTION_LARGE: |
| 1447 | large_model = TRUE; |
| 1448 | return 1; |
| 1449 | |
| 1450 | case OPTION_NO_INTR_NOPS: |
| 1451 | gen_interrupt_nops = FALSE; |
| 1452 | return 1; |
| 1453 | case OPTION_INTR_NOPS: |
| 1454 | gen_interrupt_nops = TRUE; |
| 1455 | return 1; |
| 1456 | |
| 1457 | case OPTION_WARN_INTR_NOPS: |
| 1458 | warn_interrupt_nops = TRUE; |
| 1459 | return 1; |
| 1460 | case OPTION_NO_WARN_INTR_NOPS: |
| 1461 | warn_interrupt_nops = FALSE; |
| 1462 | return 1; |
| 1463 | |
| 1464 | case OPTION_UNKNOWN_INTR_NOPS: |
| 1465 | do_unknown_interrupt_nops = TRUE; |
| 1466 | return 1; |
| 1467 | case OPTION_NO_UNKNOWN_INTR_NOPS: |
| 1468 | do_unknown_interrupt_nops = FALSE; |
| 1469 | return 1; |
| 1470 | |
| 1471 | case OPTION_MOVE_DATA: |
| 1472 | /* Silently ignored. */ |
| 1473 | return 1; |
| 1474 | |
| 1475 | case OPTION_DATA_REGION: |
| 1476 | if (strcmp (arg, "upper") == 0 |
| 1477 | || strcmp (arg, "either") == 0) |
| 1478 | upper_data_region_in_use = TRUE; |
| 1479 | if (strcmp (arg, "upper") == 0 |
| 1480 | || strcmp (arg, "either") == 0 |
| 1481 | /* With data-region=none, the compiler has generated code assuming |
| 1482 | data could be in the upper region, but nothing has been explicitly |
| 1483 | placed there. */ |
| 1484 | || strcmp (arg, "none") == 0) |
| 1485 | lower_data_region_only = FALSE; |
| 1486 | return 1; |
| 1487 | } |
| 1488 | |
| 1489 | return 0; |
| 1490 | } |
| 1491 | |
| 1492 | /* The intention here is to have the mere presence of these sections |
| 1493 | cause the object to have a reference to a well-known symbol. This |
| 1494 | reference pulls in the bits of the runtime (crt0) that initialize |
| 1495 | these sections. Thus, for example, the startup code to call |
| 1496 | memset() to initialize .bss will only be linked in when there is a |
| 1497 | non-empty .bss section. Otherwise, the call would exist but have a |
| 1498 | zero length parameter, which is a waste of memory and cycles. |
| 1499 | |
| 1500 | The code which initializes these sections should have a global |
| 1501 | label for these symbols, and should be marked with KEEP() in the |
| 1502 | linker script. */ |
| 1503 | |
| 1504 | static void |
| 1505 | msp430_make_init_symbols (const char * name) |
| 1506 | { |
| 1507 | if (strncmp (name, ".bss", 4) == 0 |
| 1508 | || strncmp (name, ".lower.bss", 10) == 0 |
| 1509 | || strncmp (name, ".either.bss", 11) == 0 |
| 1510 | || strncmp (name, ".gnu.linkonce.b.", 16) == 0) |
| 1511 | (void) symbol_find_or_make ("__crt0_init_bss"); |
| 1512 | |
| 1513 | if (strncmp (name, ".data", 5) == 0 |
| 1514 | || strncmp (name, ".lower.data", 11) == 0 |
| 1515 | || strncmp (name, ".either.data", 12) == 0 |
| 1516 | || strncmp (name, ".gnu.linkonce.d.", 16) == 0) |
| 1517 | (void) symbol_find_or_make ("__crt0_movedata"); |
| 1518 | /* Note - data assigned to the .either.data section may end up being |
| 1519 | placed in the .upper.data section if the .lower.data section is |
| 1520 | full. Hence the need to define the crt0 symbol. |
| 1521 | The linker may create upper or either data sections, even when none exist |
| 1522 | at the moment, so use the value of the data-region flag to determine if |
| 1523 | the symbol is needed. */ |
| 1524 | if (strncmp (name, ".either.data", 12) == 0 |
| 1525 | || strncmp (name, ".upper.data", 11) == 0 |
| 1526 | || upper_data_region_in_use) |
| 1527 | (void) symbol_find_or_make ("__crt0_move_highdata"); |
| 1528 | |
| 1529 | /* See note about .either.data above. */ |
| 1530 | if (strncmp (name, ".upper.bss", 10) == 0 |
| 1531 | || strncmp (name, ".either.bss", 11) == 0 |
| 1532 | || upper_data_region_in_use) |
| 1533 | (void) symbol_find_or_make ("__crt0_init_highbss"); |
| 1534 | |
| 1535 | /* The following symbols are for the crt0 functions that run through |
| 1536 | the different .*_array sections and call the functions placed there. |
| 1537 | - init_array stores global static C++ constructors to run before main. |
| 1538 | - preinit_array is not expected to ever be used for MSP430. |
| 1539 | GCC only places initialization functions for runtime "sanitizers" |
| 1540 | (i.e. {a,l,t,u}san) and "virtual table verification" in preinit_array. |
| 1541 | - fini_array stores global static C++ destructors to run after calling |
| 1542 | exit() or returning from main. |
| 1543 | __crt0_run_array is required to actually call the functions in the above |
| 1544 | arrays. */ |
| 1545 | if (strncmp (name, ".init_array", 11) == 0) |
| 1546 | { |
| 1547 | (void) symbol_find_or_make ("__crt0_run_init_array"); |
| 1548 | (void) symbol_find_or_make ("__crt0_run_array"); |
| 1549 | } |
| 1550 | else if (strncmp (name, ".preinit_array", 14) == 0) |
| 1551 | { |
| 1552 | (void) symbol_find_or_make ("__crt0_run_preinit_array"); |
| 1553 | (void) symbol_find_or_make ("__crt0_run_array"); |
| 1554 | } |
| 1555 | else if (strncmp (name, ".fini_array", 11) == 0) |
| 1556 | { |
| 1557 | (void) symbol_find_or_make ("__crt0_run_fini_array"); |
| 1558 | (void) symbol_find_or_make ("__crt0_run_array"); |
| 1559 | } |
| 1560 | } |
| 1561 | |
| 1562 | static void |
| 1563 | msp430_section (int arg) |
| 1564 | { |
| 1565 | char * saved_ilp = input_line_pointer; |
| 1566 | const char * name = obj_elf_section_name (); |
| 1567 | |
| 1568 | msp430_make_init_symbols (name); |
| 1569 | |
| 1570 | input_line_pointer = saved_ilp; |
| 1571 | obj_elf_section (arg); |
| 1572 | } |
| 1573 | |
| 1574 | void |
| 1575 | msp430_frob_section (asection *sec) |
| 1576 | { |
| 1577 | const char *name = sec->name; |
| 1578 | |
| 1579 | if (sec->size == 0) |
| 1580 | return; |
| 1581 | |
| 1582 | msp430_make_init_symbols (name); |
| 1583 | } |
| 1584 | |
| 1585 | static void |
| 1586 | msp430_lcomm (int ignore ATTRIBUTE_UNUSED) |
| 1587 | { |
| 1588 | symbolS *symbolP = s_comm_internal (0, s_lcomm_internal); |
| 1589 | |
| 1590 | if (symbolP) |
| 1591 | symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; |
| 1592 | (void) symbol_find_or_make ("__crt0_init_bss"); |
| 1593 | } |
| 1594 | |
| 1595 | static void |
| 1596 | msp430_comm (int needs_align) |
| 1597 | { |
| 1598 | s_comm_internal (needs_align, elf_common_parse); |
| 1599 | (void) symbol_find_or_make ("__crt0_init_bss"); |
| 1600 | } |
| 1601 | |
| 1602 | static void |
| 1603 | msp430_refsym (int arg ATTRIBUTE_UNUSED) |
| 1604 | { |
| 1605 | char sym_name[1024]; |
| 1606 | input_line_pointer = extract_word (input_line_pointer, sym_name, 1024); |
| 1607 | |
| 1608 | (void) symbol_find_or_make (sym_name); |
| 1609 | } |
| 1610 | |
| 1611 | /* Handle a .mspabi_attribute or .gnu_attribute directive. |
| 1612 | attr_type is 0 for .mspabi_attribute or 1 for .gnu_attribute. |
| 1613 | This is only used for validating the attributes in the assembly file against |
| 1614 | the options gas has been invoked with. If the attributes and options are |
| 1615 | compatible then we add the attributes to the assembly file in |
| 1616 | msp430_md_end. */ |
| 1617 | static void |
| 1618 | msp430_object_attribute (int attr_type) |
| 1619 | { |
| 1620 | char tag_name_s[32]; |
| 1621 | char tag_value_s[32]; |
| 1622 | int tag_name, tag_value; |
| 1623 | /* First operand is the tag name, second is the tag value e.g. |
| 1624 | ".mspabi_attribute 4, 2". */ |
| 1625 | input_line_pointer = extract_operand (input_line_pointer, tag_name_s, 32); |
| 1626 | input_line_pointer = extract_operand (input_line_pointer, tag_value_s, 32); |
| 1627 | tag_name = atoi (tag_name_s); |
| 1628 | tag_value = atoi (tag_value_s); |
| 1629 | /* If the attribute directive is present, the tag_value should never be set |
| 1630 | to 0. */ |
| 1631 | if (tag_name == 0 || tag_value == 0) |
| 1632 | as_bad (_("bad arguments \"%s\" and/or \"%s\" in %s directive"), |
| 1633 | tag_name_s, tag_value_s, (attr_type ? ".gnu_attribute" |
| 1634 | : ".mspabi_attribute")); |
| 1635 | else if (attr_type == 0) |
| 1636 | /* Handle .mspabi_attribute. */ |
| 1637 | switch (tag_name) |
| 1638 | { |
| 1639 | case OFBA_MSPABI_Tag_ISA: |
| 1640 | switch (tag_value) |
| 1641 | { |
| 1642 | case OFBA_MSPABI_Val_ISA_MSP430: |
| 1643 | if (target_is_430x ()) |
| 1644 | as_bad (_("file was compiled for the 430 ISA but the %s ISA is " |
| 1645 | "selected"), (target_is_430xv2 () ? "430X" : "430Xv2")); |
| 1646 | break; |
| 1647 | case OFBA_MSPABI_Val_ISA_MSP430X: |
| 1648 | if (!target_is_430x ()) |
| 1649 | as_bad (_("file was compiled for the 430X ISA but the 430 ISA is " |
| 1650 | "selected")); |
| 1651 | break; |
| 1652 | default: |
| 1653 | as_bad (_("unknown MSPABI build attribute value '%d' for " |
| 1654 | "OFBA_MSPABI_Tag_ISA(%d) in .mspabi_attribute directive"), |
| 1655 | tag_value, OFBA_MSPABI_Tag_ISA); |
| 1656 | break; |
| 1657 | } |
| 1658 | break; |
| 1659 | case OFBA_MSPABI_Tag_Code_Model: |
| 1660 | /* Fall through. */ |
| 1661 | case OFBA_MSPABI_Tag_Data_Model: |
| 1662 | /* FIXME: Might we want to set the memory model to large if the assembly |
| 1663 | file has the large model attribute, but -ml has not been passed? */ |
| 1664 | switch (tag_value) |
| 1665 | { |
| 1666 | case OFBA_MSPABI_Val_Code_Model_SMALL: |
| 1667 | if (large_model) |
| 1668 | as_bad (_("file was compiled for the small memory model, but the " |
| 1669 | "large memory model is selected")); |
| 1670 | break; |
| 1671 | case OFBA_MSPABI_Val_Code_Model_LARGE: |
| 1672 | if (!large_model) |
| 1673 | as_bad (_("file was compiled for the large memory model, " |
| 1674 | "but the small memory model is selected")); |
| 1675 | break; |
| 1676 | default: |
| 1677 | as_bad (_("unknown MSPABI build attribute value '%d' for %s(%d) " |
| 1678 | "in .mspabi_attribute directive"), tag_value, |
| 1679 | (tag_name == OFBA_MSPABI_Tag_Code_Model |
| 1680 | ? "OFBA_MSPABI_Tag_Code_Model" |
| 1681 | : "OFBA_MSPABI_Tag_Data_Model"), |
| 1682 | (tag_name == OFBA_MSPABI_Tag_Code_Model |
| 1683 | ? OFBA_MSPABI_Tag_Code_Model |
| 1684 | : OFBA_MSPABI_Tag_Data_Model)); |
| 1685 | break; |
| 1686 | } |
| 1687 | break; |
| 1688 | default: |
| 1689 | as_bad (_("unknown MSPABI build attribute tag '%d' in " |
| 1690 | ".mspabi_attribute directive"), tag_name); |
| 1691 | break; |
| 1692 | } |
| 1693 | else if (attr_type == 1) |
| 1694 | /* Handle .gnu_attribute. */ |
| 1695 | switch (tag_name) |
| 1696 | { |
| 1697 | case Tag_GNU_MSP430_Data_Region: |
| 1698 | /* This attribute is only applicable in the large memory model. */ |
| 1699 | if (!large_model) |
| 1700 | break; |
| 1701 | switch (tag_value) |
| 1702 | { |
| 1703 | case Val_GNU_MSP430_Data_Region_Lower: |
| 1704 | if (!lower_data_region_only) |
| 1705 | as_bad (_("file was compiled assuming all data will be in the " |
| 1706 | "lower memory region, but the upper region is in use")); |
| 1707 | break; |
| 1708 | case Val_GNU_MSP430_Data_Region_Any: |
| 1709 | if (lower_data_region_only) |
| 1710 | as_bad (_("file was compiled assuming data could be in the upper " |
| 1711 | "memory region, but the lower data region is " |
| 1712 | "exclusively in use")); |
| 1713 | break; |
| 1714 | default: |
| 1715 | as_bad (_("unknown GNU build attribute value '%d' for " |
| 1716 | "Tag_GNU_MSP430_Data_Region(%d) in .gnu_attribute " |
| 1717 | "directive"), tag_value, Tag_GNU_MSP430_Data_Region); |
| 1718 | } |
| 1719 | } |
| 1720 | else |
| 1721 | as_bad (_("internal: unexpected argument '%d' to msp430_object_attribute"), |
| 1722 | attr_type); |
| 1723 | } |
| 1724 | |
| 1725 | const pseudo_typeS md_pseudo_table[] = |
| 1726 | { |
| 1727 | {"arch", msp430_set_arch, OPTION_MMCU}, |
| 1728 | {"cpu", msp430_set_arch, OPTION_MCPU}, |
| 1729 | {"profiler", msp430_profiler, 0}, |
| 1730 | {"section", msp430_section, 0}, |
| 1731 | {"section.s", msp430_section, 0}, |
| 1732 | {"sect", msp430_section, 0}, |
| 1733 | {"sect.s", msp430_section, 0}, |
| 1734 | {"pushsection", msp430_section, 1}, |
| 1735 | {"refsym", msp430_refsym, 0}, |
| 1736 | {"comm", msp430_comm, 0}, |
| 1737 | {"lcomm", msp430_lcomm, 0}, |
| 1738 | {"mspabi_attribute", msp430_object_attribute, 0}, |
| 1739 | {"gnu_attribute", msp430_object_attribute, 1}, |
| 1740 | {NULL, NULL, 0} |
| 1741 | }; |
| 1742 | |
| 1743 | const char *md_shortopts = "mm:,mP,mQ,ml,mN,mn,my,mY,mu,mU"; |
| 1744 | |
| 1745 | struct option md_longopts[] = |
| 1746 | { |
| 1747 | {"msilicon-errata", required_argument, NULL, OPTION_SILICON_ERRATA}, |
| 1748 | {"msilicon-errata-warn", required_argument, NULL, OPTION_SILICON_ERRATA_WARN}, |
| 1749 | {"mmcu", required_argument, NULL, OPTION_MMCU}, |
| 1750 | {"mcpu", required_argument, NULL, OPTION_MCPU}, |
| 1751 | {"mP", no_argument, NULL, OPTION_POLYMORPHS}, |
| 1752 | {"mQ", no_argument, NULL, OPTION_RELAX}, |
| 1753 | {"ml", no_argument, NULL, OPTION_LARGE}, |
| 1754 | {"mN", no_argument, NULL, OPTION_NO_INTR_NOPS}, |
| 1755 | {"mn", no_argument, NULL, OPTION_INTR_NOPS}, |
| 1756 | {"mY", no_argument, NULL, OPTION_NO_WARN_INTR_NOPS}, |
| 1757 | {"my", no_argument, NULL, OPTION_WARN_INTR_NOPS}, |
| 1758 | {"mu", no_argument, NULL, OPTION_UNKNOWN_INTR_NOPS}, |
| 1759 | {"mU", no_argument, NULL, OPTION_NO_UNKNOWN_INTR_NOPS}, |
| 1760 | {"md", no_argument, NULL, OPTION_MOVE_DATA}, |
| 1761 | {"mdata-region", required_argument, NULL, OPTION_DATA_REGION}, |
| 1762 | {NULL, no_argument, NULL, 0} |
| 1763 | }; |
| 1764 | |
| 1765 | size_t md_longopts_size = sizeof (md_longopts); |
| 1766 | |
| 1767 | void |
| 1768 | md_show_usage (FILE * stream) |
| 1769 | { |
| 1770 | fprintf (stream, |
| 1771 | _("MSP430 options:\n" |
| 1772 | " -mmcu=<msp430-name> - select microcontroller type\n" |
| 1773 | " -mcpu={430|430x|430xv2} - select microcontroller architecture\n")); |
| 1774 | fprintf (stream, |
| 1775 | _(" -msilicon-errata=<name>[,<name>...] - enable fixups for silicon errata\n" |
| 1776 | " -msilicon-errata-warn=<name>[,<name>...] - warn when a fixup might be needed\n" |
| 1777 | " supported errata names: cpu4, cpu8, cpu11, cpu12, cpu13, cpu19\n")); |
| 1778 | fprintf (stream, |
| 1779 | _(" -mQ - enable relaxation at assembly time. DANGEROUS!\n" |
| 1780 | " -mP - enable polymorph instructions\n")); |
| 1781 | fprintf (stream, |
| 1782 | _(" -ml - enable large code model\n")); |
| 1783 | fprintf (stream, |
| 1784 | _(" -mN - do not insert NOPs after changing interrupts (default)\n")); |
| 1785 | fprintf (stream, |
| 1786 | _(" -mn - insert a NOP after changing interrupts\n")); |
| 1787 | fprintf (stream, |
| 1788 | _(" -mY - do not warn about missing NOPs after changing interrupts\n")); |
| 1789 | fprintf (stream, |
| 1790 | _(" -my - warn about missing NOPs after changing interrupts (default)\n")); |
| 1791 | fprintf (stream, |
| 1792 | _(" -mU - for an instruction which changes interrupt state, but where it is not\n" |
| 1793 | " known how the state is changed, do not warn/insert NOPs\n")); |
| 1794 | fprintf (stream, |
| 1795 | _(" -mu - for an instruction which changes interrupt state, but where it is not\n" |
| 1796 | " known how the state is changed, warn/insert NOPs (default)\n" |
| 1797 | " -mn and/or -my are required for this to have any effect\n")); |
| 1798 | fprintf (stream, |
| 1799 | _(" -mdata-region={none|lower|upper|either} - select region data will be\n" |
| 1800 | " placed in.\n")); |
| 1801 | } |
| 1802 | |
| 1803 | symbolS * |
| 1804 | md_undefined_symbol (char * name ATTRIBUTE_UNUSED) |
| 1805 | { |
| 1806 | return NULL; |
| 1807 | } |
| 1808 | |
| 1809 | static char * |
| 1810 | extract_cmd (char * from, char * to, int limit) |
| 1811 | { |
| 1812 | int size = 0; |
| 1813 | |
| 1814 | while (*from && ! ISSPACE (*from) && *from != '.' && limit > size) |
| 1815 | { |
| 1816 | *(to + size) = *from; |
| 1817 | from++; |
| 1818 | size++; |
| 1819 | } |
| 1820 | |
| 1821 | *(to + size) = 0; |
| 1822 | |
| 1823 | return from; |
| 1824 | } |
| 1825 | |
| 1826 | const char * |
| 1827 | md_atof (int type, char * litP, int * sizeP) |
| 1828 | { |
| 1829 | return ieee_md_atof (type, litP, sizeP, FALSE); |
| 1830 | } |
| 1831 | |
| 1832 | void |
| 1833 | md_begin (void) |
| 1834 | { |
| 1835 | struct msp430_opcode_s * opcode; |
| 1836 | msp430_hash = str_htab_create (); |
| 1837 | |
| 1838 | for (opcode = msp430_opcodes; opcode->name; opcode++) |
| 1839 | str_hash_insert (msp430_hash, opcode->name, opcode, 0); |
| 1840 | |
| 1841 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, |
| 1842 | target_is_430x () ? bfd_mach_msp430x : bfd_mach_msp11); |
| 1843 | |
| 1844 | /* Set linkrelax here to avoid fixups in most sections. */ |
| 1845 | linkrelax = 1; |
| 1846 | } |
| 1847 | |
| 1848 | static inline bfd_boolean |
| 1849 | is_regname_end (char c) |
| 1850 | { |
| 1851 | return (c == 0 || ! ISALNUM (c)); |
| 1852 | } |
| 1853 | |
| 1854 | /* Returns the register number equivalent to the string T. |
| 1855 | Returns -1 if there is no such register. |
| 1856 | Skips a leading 'r' or 'R' character if there is one. |
| 1857 | Handles the register aliases PC and SP. */ |
| 1858 | |
| 1859 | static signed int |
| 1860 | check_reg (char * t) |
| 1861 | { |
| 1862 | char * endt; |
| 1863 | signed long int val; |
| 1864 | |
| 1865 | if (t == NULL || t[0] == 0) |
| 1866 | return -1; |
| 1867 | |
| 1868 | if (*t == 'r' || *t == 'R') |
| 1869 | ++t; |
| 1870 | |
| 1871 | if (strncasecmp (t, "pc", 2) == 0 && is_regname_end (t[2])) |
| 1872 | return 0; |
| 1873 | |
| 1874 | if (strncasecmp (t, "sp", 2) == 0 && is_regname_end (t[2])) |
| 1875 | return 1; |
| 1876 | |
| 1877 | if (strncasecmp (t, "sr", 2) == 0 && is_regname_end (t[2])) |
| 1878 | return 2; |
| 1879 | |
| 1880 | if (*t == '0' && is_regname_end (t[1])) |
| 1881 | return 0; |
| 1882 | |
| 1883 | val = strtol (t, & endt, 0); |
| 1884 | |
| 1885 | if (val < 1 || val > 15) |
| 1886 | return -1; |
| 1887 | |
| 1888 | if (is_regname_end (*endt)) |
| 1889 | return val; |
| 1890 | |
| 1891 | return -1; |
| 1892 | } |
| 1893 | |
| 1894 | static int |
| 1895 | msp430_srcoperand (struct msp430_operand_s * op, |
| 1896 | char * l, |
| 1897 | int bin, |
| 1898 | bfd_boolean * imm_op, |
| 1899 | bfd_boolean allow_20bit_values, |
| 1900 | bfd_boolean constants_allowed) |
| 1901 | { |
| 1902 | char * end; |
| 1903 | char *__tl = l; |
| 1904 | |
| 1905 | /* Check if an immediate #VALUE. The hash sign should be only at the beginning! */ |
| 1906 | if (*l == '#') |
| 1907 | { |
| 1908 | char *h = l; |
| 1909 | int vshift = -1; |
| 1910 | int rval = 0; |
| 1911 | /* Use all parts of the constant expression by default. */ |
| 1912 | enum msp430_expp_e expp = MSP_EXPP_ALL; |
| 1913 | |
| 1914 | /* Check if there is: |
| 1915 | llo(x) - least significant 16 bits, x &= 0xffff |
| 1916 | lhi(x) - x = (x >> 16) & 0xffff, |
| 1917 | hlo(x) - x = (x >> 32) & 0xffff, |
| 1918 | hhi(x) - x = (x >> 48) & 0xffff |
| 1919 | The value _MUST_ be an immediate expression: #hlo(1231231231). */ |
| 1920 | |
| 1921 | *imm_op = TRUE; |
| 1922 | |
| 1923 | if (strncasecmp (h, "#llo(", 5) == 0) |
| 1924 | { |
| 1925 | vshift = 0; |
| 1926 | rval = 3; |
| 1927 | expp = MSP_EXPP_LLO; |
| 1928 | } |
| 1929 | else if (strncasecmp (h, "#lhi(", 5) == 0) |
| 1930 | { |
| 1931 | vshift = 1; |
| 1932 | rval = 3; |
| 1933 | expp = MSP_EXPP_LHI; |
| 1934 | } |
| 1935 | else if (strncasecmp (h, "#hlo(", 5) == 0) |
| 1936 | { |
| 1937 | vshift = 2; |
| 1938 | rval = 3; |
| 1939 | expp = MSP_EXPP_HLO; |
| 1940 | } |
| 1941 | else if (strncasecmp (h, "#hhi(", 5) == 0) |
| 1942 | { |
| 1943 | vshift = 3; |
| 1944 | rval = 3; |
| 1945 | expp = MSP_EXPP_HHI; |
| 1946 | } |
| 1947 | else if (strncasecmp (h, "#lo(", 4) == 0) |
| 1948 | { |
| 1949 | vshift = 0; |
| 1950 | rval = 2; |
| 1951 | expp = MSP_EXPP_LO; |
| 1952 | } |
| 1953 | else if (strncasecmp (h, "#hi(", 4) == 0) |
| 1954 | { |
| 1955 | vshift = 1; |
| 1956 | rval = 2; |
| 1957 | expp = MSP_EXPP_HI; |
| 1958 | } |
| 1959 | |
| 1960 | op->reg = 0; /* Reg PC. */ |
| 1961 | op->am = 3; |
| 1962 | op->ol = 1; /* Immediate will follow an instruction. */ |
| 1963 | __tl = h + 1 + rval; |
| 1964 | op->mode = OP_EXP; |
| 1965 | op->vshift = vshift; |
| 1966 | op->expp = expp; |
| 1967 | |
| 1968 | end = parse_exp (__tl, &(op->exp)); |
| 1969 | if (end != NULL && *end != 0 && *end != ')' ) |
| 1970 | { |
| 1971 | as_bad (_("extra characters '%s' at end of immediate expression '%s'"), end, l); |
| 1972 | return 1; |
| 1973 | } |
| 1974 | if (op->exp.X_op == O_constant) |
| 1975 | { |
| 1976 | int x = op->exp.X_add_number; |
| 1977 | |
| 1978 | if (vshift == 0) |
| 1979 | { |
| 1980 | x = x & 0xffff; |
| 1981 | op->exp.X_add_number = x; |
| 1982 | } |
| 1983 | else if (vshift == 1) |
| 1984 | { |
| 1985 | x = (x >> 16) & 0xffff; |
| 1986 | op->exp.X_add_number = x; |
| 1987 | op->vshift = 0; |
| 1988 | } |
| 1989 | else if (vshift > 1) |
| 1990 | { |
| 1991 | if (x < 0) |
| 1992 | op->exp.X_add_number = -1; |
| 1993 | else |
| 1994 | op->exp.X_add_number = 0; /* Nothing left. */ |
| 1995 | x = op->exp.X_add_number; |
| 1996 | op->vshift = 0; |
| 1997 | } |
| 1998 | |
| 1999 | if (allow_20bit_values) |
| 2000 | { |
| 2001 | if (op->exp.X_add_number > 0xfffff || op->exp.X_add_number < -524288) |
| 2002 | { |
| 2003 | as_bad (_("value 0x%x out of extended range."), x); |
| 2004 | return 1; |
| 2005 | } |
| 2006 | } |
| 2007 | else if (op->exp.X_add_number > 65535 || op->exp.X_add_number < -32768) |
| 2008 | { |
| 2009 | as_bad (_("value %d out of range. Use #lo() or #hi()"), x); |
| 2010 | return 1; |
| 2011 | } |
| 2012 | |
| 2013 | /* Now check constants. */ |
| 2014 | /* Substitute register mode with a constant generator if applicable. */ |
| 2015 | |
| 2016 | if (!allow_20bit_values) |
| 2017 | x = (short) x; /* Extend sign. */ |
| 2018 | |
| 2019 | if (! constants_allowed) |
| 2020 | ; |
| 2021 | else if (x == 0) |
| 2022 | { |
| 2023 | op->reg = 3; |
| 2024 | op->am = 0; |
| 2025 | op->ol = 0; |
| 2026 | op->mode = OP_REG; |
| 2027 | } |
| 2028 | else if (x == 1) |
| 2029 | { |
| 2030 | op->reg = 3; |
| 2031 | op->am = 1; |
| 2032 | op->ol = 0; |
| 2033 | op->mode = OP_REG; |
| 2034 | } |
| 2035 | else if (x == 2) |
| 2036 | { |
| 2037 | op->reg = 3; |
| 2038 | op->am = 2; |
| 2039 | op->ol = 0; |
| 2040 | op->mode = OP_REG; |
| 2041 | } |
| 2042 | else if (x == -1) |
| 2043 | { |
| 2044 | op->reg = 3; |
| 2045 | op->am = 3; |
| 2046 | op->ol = 0; |
| 2047 | op->mode = OP_REG; |
| 2048 | } |
| 2049 | else if (x == 4) |
| 2050 | { |
| 2051 | if (bin == 0x1200 && ! target_is_430x ()) |
| 2052 | { |
| 2053 | /* CPU4: The shorter form of PUSH #4 is not supported on MSP430. */ |
| 2054 | if (silicon_errata_warn & SILICON_ERRATA_CPU4) |
| 2055 | as_warn (_("cpu4: not converting PUSH #4 to shorter form")); |
| 2056 | /* No need to check silicon_errata_fixes - this fix is always implemented. */ |
| 2057 | } |
| 2058 | else |
| 2059 | { |
| 2060 | op->reg = 2; |
| 2061 | op->am = 2; |
| 2062 | op->ol = 0; |
| 2063 | op->mode = OP_REG; |
| 2064 | } |
| 2065 | } |
| 2066 | else if (x == 8) |
| 2067 | { |
| 2068 | if (bin == 0x1200 && ! target_is_430x ()) |
| 2069 | { |
| 2070 | /* CPU4: The shorter form of PUSH #8 is not supported on MSP430. */ |
| 2071 | if (silicon_errata_warn & SILICON_ERRATA_CPU4) |
| 2072 | as_warn (_("cpu4: not converting PUSH #8 to shorter form")); |
| 2073 | } |
| 2074 | else |
| 2075 | { |
| 2076 | op->reg = 2; |
| 2077 | op->am = 3; |
| 2078 | op->ol = 0; |
| 2079 | op->mode = OP_REG; |
| 2080 | } |
| 2081 | } |
| 2082 | } |
| 2083 | else if (op->exp.X_op == O_symbol) |
| 2084 | { |
| 2085 | if (vshift > 1) |
| 2086 | as_bad (_("error: unsupported #foo() directive used on symbol")); |
| 2087 | op->mode = OP_EXP; |
| 2088 | } |
| 2089 | else if (op->exp.X_op == O_big) |
| 2090 | { |
| 2091 | short x; |
| 2092 | |
| 2093 | if (vshift != -1) |
| 2094 | { |
| 2095 | op->exp.X_op = O_constant; |
| 2096 | op->exp.X_add_number = 0xffff & generic_bignum[vshift]; |
| 2097 | x = op->exp.X_add_number; |
| 2098 | op->vshift = 0; |
| 2099 | } |
| 2100 | else |
| 2101 | { |
| 2102 | as_bad (_ |
| 2103 | ("unknown expression in operand %s. Use #llo(), #lhi(), #hlo() or #hhi()"), |
| 2104 | l); |
| 2105 | return 1; |
| 2106 | } |
| 2107 | |
| 2108 | if (x == 0) |
| 2109 | { |
| 2110 | op->reg = 3; |
| 2111 | op->am = 0; |
| 2112 | op->ol = 0; |
| 2113 | op->mode = OP_REG; |
| 2114 | } |
| 2115 | else if (x == 1) |
| 2116 | { |
| 2117 | op->reg = 3; |
| 2118 | op->am = 1; |
| 2119 | op->ol = 0; |
| 2120 | op->mode = OP_REG; |
| 2121 | } |
| 2122 | else if (x == 2) |
| 2123 | { |
| 2124 | op->reg = 3; |
| 2125 | op->am = 2; |
| 2126 | op->ol = 0; |
| 2127 | op->mode = OP_REG; |
| 2128 | } |
| 2129 | else if (x == -1) |
| 2130 | { |
| 2131 | op->reg = 3; |
| 2132 | op->am = 3; |
| 2133 | op->ol = 0; |
| 2134 | op->mode = OP_REG; |
| 2135 | } |
| 2136 | else if (x == 4) |
| 2137 | { |
| 2138 | op->reg = 2; |
| 2139 | op->am = 2; |
| 2140 | op->ol = 0; |
| 2141 | op->mode = OP_REG; |
| 2142 | } |
| 2143 | else if (x == 8) |
| 2144 | { |
| 2145 | op->reg = 2; |
| 2146 | op->am = 3; |
| 2147 | op->ol = 0; |
| 2148 | op->mode = OP_REG; |
| 2149 | } |
| 2150 | } |
| 2151 | /* Redundant (yet) check. */ |
| 2152 | else if (op->exp.X_op == O_register) |
| 2153 | as_bad |
| 2154 | (_("Registers cannot be used within immediate expression [%s]"), l); |
| 2155 | else |
| 2156 | as_bad (_("unknown operand %s"), l); |
| 2157 | |
| 2158 | return 0; |
| 2159 | } |
| 2160 | |
| 2161 | /* Check if absolute &VALUE (assume that we can construct something like ((a&b)<<7 + 25). */ |
| 2162 | if (*l == '&') |
| 2163 | { |
| 2164 | char *h = l; |
| 2165 | |
| 2166 | op->reg = 2; /* Reg 2 in absolute addr mode. */ |
| 2167 | op->am = 1; /* Mode As == 01 bin. */ |
| 2168 | op->ol = 1; /* Immediate value followed by instruction. */ |
| 2169 | __tl = h + 1; |
| 2170 | end = parse_exp (__tl, &(op->exp)); |
| 2171 | if (end != NULL && *end != 0) |
| 2172 | { |
| 2173 | as_bad (_("extra characters '%s' at the end of absolute operand '%s'"), end, l); |
| 2174 | return 1; |
| 2175 | } |
| 2176 | op->mode = OP_EXP; |
| 2177 | op->vshift = 0; |
| 2178 | op->expp = MSP_EXPP_ALL; |
| 2179 | if (op->exp.X_op == O_constant) |
| 2180 | { |
| 2181 | int x = op->exp.X_add_number; |
| 2182 | |
| 2183 | if (allow_20bit_values) |
| 2184 | { |
| 2185 | if (x > 0xfffff || x < -(0x7ffff)) |
| 2186 | { |
| 2187 | as_bad (_("value 0x%x out of extended range."), x); |
| 2188 | return 1; |
| 2189 | } |
| 2190 | } |
| 2191 | else if (x > 65535 || x < -32768) |
| 2192 | { |
| 2193 | as_bad (_("value out of range: 0x%x"), x); |
| 2194 | return 1; |
| 2195 | } |
| 2196 | } |
| 2197 | else if (op->exp.X_op == O_symbol) |
| 2198 | ; |
| 2199 | else |
| 2200 | { |
| 2201 | /* Redundant (yet) check. */ |
| 2202 | if (op->exp.X_op == O_register) |
| 2203 | as_bad |
| 2204 | (_("Registers cannot be used within absolute expression [%s]"), l); |
| 2205 | else |
| 2206 | as_bad (_("unknown expression in operand %s"), l); |
| 2207 | return 1; |
| 2208 | } |
| 2209 | return 0; |
| 2210 | } |
| 2211 | |
| 2212 | /* Check if indirect register mode @Rn / postincrement @Rn+. */ |
| 2213 | if (*l == '@') |
| 2214 | { |
| 2215 | char *t = l; |
| 2216 | char *m = strchr (l, '+'); |
| 2217 | |
| 2218 | if (t != l) |
| 2219 | { |
| 2220 | as_bad (_("unknown addressing mode %s"), l); |
| 2221 | return 1; |
| 2222 | } |
| 2223 | |
| 2224 | t++; |
| 2225 | |
| 2226 | if ((op->reg = check_reg (t)) == -1) |
| 2227 | { |
| 2228 | as_bad (_("Bad register name %s"), t); |
| 2229 | return 1; |
| 2230 | } |
| 2231 | |
| 2232 | op->mode = OP_REG; |
| 2233 | op->am = m ? 3 : 2; |
| 2234 | op->ol = 0; |
| 2235 | |
| 2236 | /* PC cannot be used in indirect addressing. */ |
| 2237 | if (target_is_430xv2 () && op->reg == 0) |
| 2238 | { |
| 2239 | as_bad (_("cannot use indirect addressing with the PC")); |
| 2240 | return 1; |
| 2241 | } |
| 2242 | |
| 2243 | return 0; |
| 2244 | } |
| 2245 | |
| 2246 | /* Check if register indexed X(Rn). */ |
| 2247 | do |
| 2248 | { |
| 2249 | char *h = strrchr (l, '('); |
| 2250 | char *m = strrchr (l, ')'); |
| 2251 | char *t; |
| 2252 | |
| 2253 | *imm_op = TRUE; |
| 2254 | |
| 2255 | if (!h) |
| 2256 | break; |
| 2257 | if (!m) |
| 2258 | { |
| 2259 | as_bad (_("')' required")); |
| 2260 | return 1; |
| 2261 | } |
| 2262 | |
| 2263 | t = h; |
| 2264 | op->am = 1; |
| 2265 | op->ol = 1; |
| 2266 | |
| 2267 | /* Extract a register. */ |
| 2268 | if ((op->reg = check_reg (t + 1)) == -1) |
| 2269 | { |
| 2270 | as_bad (_ |
| 2271 | ("unknown operator %s. Did you mean X(Rn) or #[hl][hl][oi](CONST) ?"), |
| 2272 | l); |
| 2273 | return 1; |
| 2274 | } |
| 2275 | |
| 2276 | if (op->reg == 2) |
| 2277 | { |
| 2278 | as_bad (_("r2 should not be used in indexed addressing mode")); |
| 2279 | return 1; |
| 2280 | } |
| 2281 | |
| 2282 | /* Extract constant. */ |
| 2283 | __tl = l; |
| 2284 | *h = 0; |
| 2285 | op->mode = OP_EXP; |
| 2286 | op->vshift = 0; |
| 2287 | op->expp = MSP_EXPP_ALL; |
| 2288 | end = parse_exp (__tl, &(op->exp)); |
| 2289 | if (end != NULL && *end != 0) |
| 2290 | { |
| 2291 | as_bad (_("extra characters '%s' at end of operand '%s'"), end, l); |
| 2292 | return 1; |
| 2293 | } |
| 2294 | if (op->exp.X_op == O_constant) |
| 2295 | { |
| 2296 | int x = op->exp.X_add_number; |
| 2297 | |
| 2298 | if (allow_20bit_values) |
| 2299 | { |
| 2300 | if (x > 0xfffff || x < - (0x7ffff)) |
| 2301 | { |
| 2302 | as_bad (_("value 0x%x out of extended range."), x); |
| 2303 | return 1; |
| 2304 | } |
| 2305 | } |
| 2306 | else if (x > 65535 || x < -32768) |
| 2307 | { |
| 2308 | as_bad (_("value out of range: 0x%x"), x); |
| 2309 | return 1; |
| 2310 | } |
| 2311 | |
| 2312 | if (x == 0) |
| 2313 | { |
| 2314 | op->mode = OP_REG; |
| 2315 | op->am = 2; |
| 2316 | op->ol = 0; |
| 2317 | return 0; |
| 2318 | } |
| 2319 | |
| 2320 | if (op->reg == 1 && (x & 1)) |
| 2321 | { |
| 2322 | if (silicon_errata_fix & SILICON_ERRATA_CPU8) |
| 2323 | as_bad (_("CPU8: Stack pointer accessed with an odd offset")); |
| 2324 | else if (silicon_errata_warn & SILICON_ERRATA_CPU8) |
| 2325 | as_warn (_("CPU8: Stack pointer accessed with an odd offset")); |
| 2326 | } |
| 2327 | } |
| 2328 | else if (op->exp.X_op == O_symbol) |
| 2329 | ; |
| 2330 | else |
| 2331 | { |
| 2332 | /* Redundant (yet) check. */ |
| 2333 | if (op->exp.X_op == O_register) |
| 2334 | as_bad |
| 2335 | (_("Registers cannot be used as a prefix of indexed expression [%s]"), l); |
| 2336 | else |
| 2337 | as_bad (_("unknown expression in operand %s"), l); |
| 2338 | return 1; |
| 2339 | } |
| 2340 | |
| 2341 | return 0; |
| 2342 | } |
| 2343 | while (0); |
| 2344 | |
| 2345 | /* Possibly register mode 'mov r1,r2'. */ |
| 2346 | if ((op->reg = check_reg (l)) != -1) |
| 2347 | { |
| 2348 | op->mode = OP_REG; |
| 2349 | op->am = 0; |
| 2350 | op->ol = 0; |
| 2351 | return 0; |
| 2352 | } |
| 2353 | |
| 2354 | /* Symbolic mode 'mov a, b' == 'mov x(pc), y(pc)'. */ |
| 2355 | op->mode = OP_EXP; |
| 2356 | op->reg = 0; /* PC relative... be careful. */ |
| 2357 | /* An expression starting with a minus sign is a constant, not an address. */ |
| 2358 | op->am = (*l == '-' ? 3 : 1); |
| 2359 | op->ol = 1; |
| 2360 | op->vshift = 0; |
| 2361 | op->expp = MSP_EXPP_ALL; |
| 2362 | __tl = l; |
| 2363 | end = parse_exp (__tl, &(op->exp)); |
| 2364 | if (end != NULL && * end != 0) |
| 2365 | { |
| 2366 | as_bad (_("extra characters '%s' at end of operand '%s'"), end, l); |
| 2367 | return 1; |
| 2368 | } |
| 2369 | return 0; |
| 2370 | } |
| 2371 | |
| 2372 | |
| 2373 | static int |
| 2374 | msp430_dstoperand (struct msp430_operand_s * op, |
| 2375 | char * l, |
| 2376 | int bin, |
| 2377 | bfd_boolean allow_20bit_values, |
| 2378 | bfd_boolean constants_allowed) |
| 2379 | { |
| 2380 | int dummy; |
| 2381 | int ret = msp430_srcoperand (op, l, bin, & dummy, |
| 2382 | allow_20bit_values, |
| 2383 | constants_allowed); |
| 2384 | |
| 2385 | if (ret) |
| 2386 | return ret; |
| 2387 | |
| 2388 | if (op->am == 2) |
| 2389 | { |
| 2390 | char *__tl = (char *) "0"; |
| 2391 | |
| 2392 | op->mode = OP_EXP; |
| 2393 | op->am = 1; |
| 2394 | op->ol = 1; |
| 2395 | op->vshift = 0; |
| 2396 | op->expp = MSP_EXPP_ALL; |
| 2397 | (void) parse_exp (__tl, &(op->exp)); |
| 2398 | |
| 2399 | if (op->exp.X_op != O_constant || op->exp.X_add_number != 0) |
| 2400 | { |
| 2401 | as_bad (_("Internal bug. Try to use 0(r%d) instead of @r%d"), |
| 2402 | op->reg, op->reg); |
| 2403 | return 1; |
| 2404 | } |
| 2405 | return 0; |
| 2406 | } |
| 2407 | |
| 2408 | if (op->am > 1) |
| 2409 | { |
| 2410 | as_bad (_ |
| 2411 | ("this addressing mode is not applicable for destination operand")); |
| 2412 | return 1; |
| 2413 | } |
| 2414 | return 0; |
| 2415 | } |
| 2416 | |
| 2417 | /* Attempt to encode a MOVA instruction with the given operands. |
| 2418 | Returns the length of the encoded instruction if successful |
| 2419 | or 0 upon failure. If the encoding fails, an error message |
| 2420 | will be returned if a pointer is provided. */ |
| 2421 | |
| 2422 | static int |
| 2423 | try_encode_mova (bfd_boolean imm_op, |
| 2424 | int bin, |
| 2425 | struct msp430_operand_s * op1, |
| 2426 | struct msp430_operand_s * op2, |
| 2427 | const char ** error_message_return) |
| 2428 | { |
| 2429 | short ZEROS = 0; |
| 2430 | char *frag; |
| 2431 | int where; |
| 2432 | |
| 2433 | /* Only a restricted subset of the normal MSP430 addressing modes |
| 2434 | are supported here, so check for the ones that are allowed. */ |
| 2435 | if (imm_op) |
| 2436 | { |
| 2437 | if (op1->mode == OP_EXP) |
| 2438 | { |
| 2439 | if (op2->mode != OP_REG) |
| 2440 | { |
| 2441 | if (error_message_return != NULL) |
| 2442 | * error_message_return = _("expected register as second argument of %s"); |
| 2443 | return 0; |
| 2444 | } |
| 2445 | |
| 2446 | if (op1->am == 3) |
| 2447 | { |
| 2448 | /* MOVA #imm20, Rdst. */ |
| 2449 | bin |= 0x80 | op2->reg; |
| 2450 | frag = frag_more (4); |
| 2451 | where = frag - frag_now->fr_literal; |
| 2452 | if (op1->exp.X_op == O_constant) |
| 2453 | { |
| 2454 | bin |= ((op1->exp.X_add_number >> 16) & 0xf) << 8; |
| 2455 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2456 | bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2); |
| 2457 | } |
| 2458 | else |
| 2459 | { |
| 2460 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2461 | fix_new_exp (frag_now, where, 4, &(op1->exp), FALSE, |
| 2462 | BFD_RELOC_MSP430X_ABS20_ADR_SRC); |
| 2463 | bfd_putl16 ((bfd_vma) ZEROS, frag + 2); |
| 2464 | } |
| 2465 | |
| 2466 | return 4; |
| 2467 | } |
| 2468 | else if (op1->am == 1) |
| 2469 | { |
| 2470 | /* MOVA z16(Rsrc), Rdst. */ |
| 2471 | bin |= 0x30 | (op1->reg << 8) | op2->reg; |
| 2472 | frag = frag_more (4); |
| 2473 | where = frag - frag_now->fr_literal; |
| 2474 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2475 | if (op1->exp.X_op == O_constant) |
| 2476 | { |
| 2477 | if (op1->exp.X_add_number > 0xffff |
| 2478 | || op1->exp.X_add_number < -(0x7fff)) |
| 2479 | { |
| 2480 | if (error_message_return != NULL) |
| 2481 | * error_message_return = _("index value too big for %s"); |
| 2482 | return 0; |
| 2483 | } |
| 2484 | bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2); |
| 2485 | } |
| 2486 | else |
| 2487 | { |
| 2488 | bfd_putl16 ((bfd_vma) ZEROS, frag + 2); |
| 2489 | fix_new_exp (frag_now, where + 2, 2, &(op1->exp), FALSE, |
| 2490 | op1->reg == 0 ? |
| 2491 | BFD_RELOC_MSP430X_PCR16 : |
| 2492 | BFD_RELOC_MSP430X_ABS16); |
| 2493 | } |
| 2494 | return 4; |
| 2495 | } |
| 2496 | |
| 2497 | if (error_message_return != NULL) |
| 2498 | * error_message_return = _("unexpected addressing mode for %s"); |
| 2499 | return 0; |
| 2500 | } |
| 2501 | else if (op1->am == 0) |
| 2502 | { |
| 2503 | /* MOVA Rsrc, ... */ |
| 2504 | if (op2->mode == OP_REG) |
| 2505 | { |
| 2506 | bin |= 0xc0 | (op1->reg << 8) | op2->reg; |
| 2507 | frag = frag_more (2); |
| 2508 | where = frag - frag_now->fr_literal; |
| 2509 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2510 | return 2; |
| 2511 | } |
| 2512 | else if (op2->am == 1) |
| 2513 | { |
| 2514 | if (op2->reg == 2) |
| 2515 | { |
| 2516 | /* MOVA Rsrc, &abs20. */ |
| 2517 | bin |= 0x60 | (op1->reg << 8); |
| 2518 | frag = frag_more (4); |
| 2519 | where = frag - frag_now->fr_literal; |
| 2520 | if (op2->exp.X_op == O_constant) |
| 2521 | { |
| 2522 | bin |= (op2->exp.X_add_number >> 16) & 0xf; |
| 2523 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2524 | bfd_putl16 (op2->exp.X_add_number & 0xffff, frag + 2); |
| 2525 | } |
| 2526 | else |
| 2527 | { |
| 2528 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2529 | bfd_putl16 ((bfd_vma) ZEROS, frag + 2); |
| 2530 | fix_new_exp (frag_now, where, 4, &(op2->exp), FALSE, |
| 2531 | BFD_RELOC_MSP430X_ABS20_ADR_DST); |
| 2532 | } |
| 2533 | return 4; |
| 2534 | } |
| 2535 | |
| 2536 | /* MOVA Rsrc, z16(Rdst). */ |
| 2537 | bin |= 0x70 | (op1->reg << 8) | op2->reg; |
| 2538 | frag = frag_more (4); |
| 2539 | where = frag - frag_now->fr_literal; |
| 2540 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2541 | if (op2->exp.X_op == O_constant) |
| 2542 | { |
| 2543 | if (op2->exp.X_add_number > 0xffff |
| 2544 | || op2->exp.X_add_number < -(0x7fff)) |
| 2545 | { |
| 2546 | if (error_message_return != NULL) |
| 2547 | * error_message_return = _("index value too big for %s"); |
| 2548 | return 0; |
| 2549 | } |
| 2550 | bfd_putl16 (op2->exp.X_add_number & 0xffff, frag + 2); |
| 2551 | } |
| 2552 | else |
| 2553 | { |
| 2554 | bfd_putl16 ((bfd_vma) ZEROS, frag + 2); |
| 2555 | fix_new_exp (frag_now, where + 2, 2, &(op2->exp), FALSE, |
| 2556 | op2->reg == 0 ? |
| 2557 | BFD_RELOC_MSP430X_PCR16 : |
| 2558 | BFD_RELOC_MSP430X_ABS16); |
| 2559 | } |
| 2560 | return 4; |
| 2561 | } |
| 2562 | |
| 2563 | if (error_message_return != NULL) |
| 2564 | * error_message_return = _("unexpected addressing mode for %s"); |
| 2565 | return 0; |
| 2566 | } |
| 2567 | } |
| 2568 | |
| 2569 | /* imm_op == FALSE. */ |
| 2570 | |
| 2571 | if (op1->reg == 2 && op1->am == 1 && op1->mode == OP_EXP) |
| 2572 | { |
| 2573 | /* MOVA &abs20, Rdst. */ |
| 2574 | if (op2->mode != OP_REG) |
| 2575 | { |
| 2576 | if (error_message_return != NULL) |
| 2577 | * error_message_return = _("expected register as second argument of %s"); |
| 2578 | return 0; |
| 2579 | } |
| 2580 | |
| 2581 | if (op2->reg == 2 || op2->reg == 3) |
| 2582 | { |
| 2583 | if (error_message_return != NULL) |
| 2584 | * error_message_return = _("constant generator destination register found in %s"); |
| 2585 | return 0; |
| 2586 | } |
| 2587 | |
| 2588 | bin |= 0x20 | op2->reg; |
| 2589 | frag = frag_more (4); |
| 2590 | where = frag - frag_now->fr_literal; |
| 2591 | if (op1->exp.X_op == O_constant) |
| 2592 | { |
| 2593 | bin |= ((op1->exp.X_add_number >> 16) & 0xf) << 8; |
| 2594 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2595 | bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2); |
| 2596 | } |
| 2597 | else |
| 2598 | { |
| 2599 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2600 | bfd_putl16 ((bfd_vma) ZEROS, frag + 2); |
| 2601 | fix_new_exp (frag_now, where, 4, &(op1->exp), FALSE, |
| 2602 | BFD_RELOC_MSP430X_ABS20_ADR_SRC); |
| 2603 | } |
| 2604 | return 4; |
| 2605 | } |
| 2606 | else if (op1->mode == OP_REG) |
| 2607 | { |
| 2608 | if (op1->am == 3) |
| 2609 | { |
| 2610 | /* MOVA @Rsrc+, Rdst. */ |
| 2611 | if (op2->mode != OP_REG) |
| 2612 | { |
| 2613 | if (error_message_return != NULL) |
| 2614 | * error_message_return = _("expected register as second argument of %s"); |
| 2615 | return 0; |
| 2616 | } |
| 2617 | |
| 2618 | if (op2->reg == 2 || op2->reg == 3) |
| 2619 | { |
| 2620 | if (error_message_return != NULL) |
| 2621 | * error_message_return = _("constant generator destination register found in %s"); |
| 2622 | return 0; |
| 2623 | } |
| 2624 | |
| 2625 | if (op1->reg == 2 || op1->reg == 3) |
| 2626 | { |
| 2627 | if (error_message_return != NULL) |
| 2628 | * error_message_return = _("constant generator source register found in %s"); |
| 2629 | return 0; |
| 2630 | } |
| 2631 | |
| 2632 | bin |= 0x10 | (op1->reg << 8) | op2->reg; |
| 2633 | frag = frag_more (2); |
| 2634 | where = frag - frag_now->fr_literal; |
| 2635 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2636 | return 2; |
| 2637 | } |
| 2638 | else if (op1->am == 2) |
| 2639 | { |
| 2640 | /* MOVA @Rsrc,Rdst */ |
| 2641 | if (op2->mode != OP_REG) |
| 2642 | { |
| 2643 | if (error_message_return != NULL) |
| 2644 | * error_message_return = _("expected register as second argument of %s"); |
| 2645 | return 0; |
| 2646 | } |
| 2647 | |
| 2648 | if (op2->reg == 2 || op2->reg == 3) |
| 2649 | { |
| 2650 | if (error_message_return != NULL) |
| 2651 | * error_message_return = _("constant generator destination register found in %s"); |
| 2652 | return 0; |
| 2653 | } |
| 2654 | |
| 2655 | if (op1->reg == 2 || op1->reg == 3) |
| 2656 | { |
| 2657 | if (error_message_return != NULL) |
| 2658 | * error_message_return = _("constant generator source register found in %s"); |
| 2659 | return 0; |
| 2660 | } |
| 2661 | |
| 2662 | bin |= (op1->reg << 8) | op2->reg; |
| 2663 | frag = frag_more (2); |
| 2664 | where = frag - frag_now->fr_literal; |
| 2665 | bfd_putl16 ((bfd_vma) bin, frag); |
| 2666 | return 2; |
| 2667 | } |
| 2668 | } |
| 2669 | |
| 2670 | if (error_message_return != NULL) |
| 2671 | * error_message_return = _("unexpected addressing mode for %s"); |
| 2672 | |
| 2673 | return 0; |
| 2674 | } |
| 2675 | |
| 2676 | #define NOP_CHECK_INTERRUPT (1 << 0) |
| 2677 | #define NOP_CHECK_CPU12 (1 << 1) |
| 2678 | #define NOP_CHECK_CPU19 (1 << 2) |
| 2679 | |
| 2680 | static signed int check_for_nop = 0; |
| 2681 | |
| 2682 | #define is_opcode(NAME) (strcmp (opcode->name, NAME) == 0) |
| 2683 | |
| 2684 | /* is_{e,d}int only check the explicit enabling/disabling of interrupts. |
| 2685 | For MOV insns, more sophisticated processing is needed to determine if they |
| 2686 | result in enabling/disabling interrupts. */ |
| 2687 | #define is_dint(OPCODE, BIN) ((strcmp (OPCODE, "dint") == 0) \ |
| 2688 | || ((strcmp (OPCODE, "bic") == 0) \ |
| 2689 | && BIN == 0xc232) \ |
| 2690 | || ((strcmp (OPCODE, "clr") == 0) \ |
| 2691 | && BIN == 0x4302)) |
| 2692 | |
| 2693 | #define is_eint(OPCODE, BIN) ((strcmp (OPCODE, "eint") == 0) \ |
| 2694 | || ((strcmp (OPCODE, "bis") == 0) \ |
| 2695 | && BIN == 0xd232)) |
| 2696 | |
| 2697 | const char * const INSERT_NOP_BEFORE_EINT = "NOP inserted here, before an interrupt enable instruction"; |
| 2698 | const char * const INSERT_NOP_AFTER_DINT = "NOP inserted here, after an interrupt disable instruction"; |
| 2699 | const char * const INSERT_NOP_AFTER_EINT = "NOP inserted here, after an interrupt enable instruction"; |
| 2700 | const char * const INSERT_NOP_BEFORE_UNKNOWN = "NOP inserted here, before this interrupt state change"; |
| 2701 | const char * const INSERT_NOP_AFTER_UNKNOWN ="NOP inserted here, after the instruction that changed interrupt state"; |
| 2702 | const char * const INSERT_NOP_AT_EOF = "NOP inserted after the interrupt state change at the end of the file"; |
| 2703 | |
| 2704 | const char * const WARN_NOP_BEFORE_EINT = "a NOP might be needed here, before an interrupt enable instruction"; |
| 2705 | const char * const WARN_NOP_AFTER_DINT = "a NOP might be needed here, after an interrupt disable instruction"; |
| 2706 | const char * const WARN_NOP_AFTER_EINT = "a NOP might be needed here, after an interrupt enable instruction"; |
| 2707 | const char * const WARN_NOP_BEFORE_UNKNOWN = "a NOP might be needed here, before this interrupt state change"; |
| 2708 | const char * const WARN_NOP_AFTER_UNKNOWN = "a NOP might also be needed here, after the instruction that changed interrupt state"; |
| 2709 | const char * const WARN_NOP_AT_EOF = "a NOP might be needed after the interrupt state change at the end of the file"; |
| 2710 | |
| 2711 | static void |
| 2712 | gen_nop (void) |
| 2713 | { |
| 2714 | char *frag; |
| 2715 | frag = frag_more (2); |
| 2716 | bfd_putl16 ((bfd_vma) 0x4303 /* NOP */, frag); |
| 2717 | dwarf2_emit_insn (2); |
| 2718 | } |
| 2719 | |
| 2720 | /* Insert/inform about adding a NOP if this insn enables interrupts. */ |
| 2721 | |
| 2722 | static void |
| 2723 | warn_eint_nop (bfd_boolean prev_insn_is_nop, bfd_boolean prev_insn_is_dint) |
| 2724 | { |
| 2725 | if (prev_insn_is_nop |
| 2726 | /* If the last insn was a DINT, we will have already warned that a NOP is |
| 2727 | required after it. */ |
| 2728 | || prev_insn_is_dint |
| 2729 | /* 430 ISA does not require a NOP before EINT. */ |
| 2730 | || (! target_is_430x ())) |
| 2731 | return; |
| 2732 | |
| 2733 | if (gen_interrupt_nops) |
| 2734 | { |
| 2735 | gen_nop (); |
| 2736 | if (warn_interrupt_nops) |
| 2737 | as_warn (_(INSERT_NOP_BEFORE_EINT)); |
| 2738 | } |
| 2739 | else if (warn_interrupt_nops) |
| 2740 | as_warn (_(WARN_NOP_BEFORE_EINT)); |
| 2741 | } |
| 2742 | |
| 2743 | /* Use when unsure what effect the insn will have on the interrupt status, |
| 2744 | to insert/warn about adding a NOP before the current insn. */ |
| 2745 | |
| 2746 | static void |
| 2747 | warn_unsure_interrupt (bfd_boolean prev_insn_is_nop, |
| 2748 | bfd_boolean prev_insn_is_dint) |
| 2749 | { |
| 2750 | if (prev_insn_is_nop |
| 2751 | /* If the last insn was a DINT, we will have already warned that a NOP is |
| 2752 | required after it. */ |
| 2753 | || prev_insn_is_dint |
| 2754 | /* 430 ISA does not require a NOP before EINT or DINT. */ |
| 2755 | || (! target_is_430x ())) |
| 2756 | return; |
| 2757 | |
| 2758 | if (gen_interrupt_nops) |
| 2759 | { |
| 2760 | gen_nop (); |
| 2761 | if (warn_interrupt_nops) |
| 2762 | as_warn (_(INSERT_NOP_BEFORE_UNKNOWN)); |
| 2763 | } |
| 2764 | else if (warn_interrupt_nops) |
| 2765 | as_warn (_(WARN_NOP_BEFORE_UNKNOWN)); |
| 2766 | } |
| 2767 | |
| 2768 | /* Parse instruction operands. |
| 2769 | Return binary opcode. */ |
| 2770 | |
| 2771 | static unsigned int |
| 2772 | msp430_operands (struct msp430_opcode_s * opcode, char * line) |
| 2773 | { |
| 2774 | int bin = opcode->bin_opcode; /* Opcode mask. */ |
| 2775 | int insn_length = 0; |
| 2776 | char l1[MAX_OP_LEN], l2[MAX_OP_LEN]; |
| 2777 | char *frag; |
| 2778 | char *end; |
| 2779 | int where; |
| 2780 | struct msp430_operand_s op1, op2; |
| 2781 | int res = 0; |
| 2782 | static short ZEROS = 0; |
| 2783 | bfd_boolean byte_op, imm_op; |
| 2784 | int op_length = 0; |
| 2785 | int fmt; |
| 2786 | int extended = 0x1800; |
| 2787 | bfd_boolean extended_op = FALSE; |
| 2788 | bfd_boolean addr_op; |
| 2789 | const char * error_message; |
| 2790 | static signed int repeat_count = 0; |
| 2791 | static bfd_boolean prev_insn_is_nop = FALSE; |
| 2792 | static bfd_boolean prev_insn_is_dint = FALSE; |
| 2793 | static bfd_boolean prev_insn_is_eint = FALSE; |
| 2794 | /* We might decide before the end of the function that the current insn is |
| 2795 | equivalent to DINT/EINT. */ |
| 2796 | bfd_boolean this_insn_is_dint = FALSE; |
| 2797 | bfd_boolean this_insn_is_eint = FALSE; |
| 2798 | bfd_boolean fix_emitted; |
| 2799 | |
| 2800 | /* Opcode is the one from opcodes table |
| 2801 | line contains something like |
| 2802 | [.w] @r2+, 5(R1) |
| 2803 | or |
| 2804 | .b @r2+, 5(R1). */ |
| 2805 | |
| 2806 | byte_op = FALSE; |
| 2807 | addr_op = FALSE; |
| 2808 | if (*line == '.') |
| 2809 | { |
| 2810 | bfd_boolean check = FALSE; |
| 2811 | ++ line; |
| 2812 | |
| 2813 | switch (TOLOWER (* line)) |
| 2814 | { |
| 2815 | case 'b': |
| 2816 | /* Byte operation. */ |
| 2817 | bin |= BYTE_OPERATION; |
| 2818 | byte_op = TRUE; |
| 2819 | check = TRUE; |
| 2820 | break; |
| 2821 | |
| 2822 | case 'a': |
| 2823 | /* "Address" ops work on 20-bit values. */ |
| 2824 | addr_op = TRUE; |
| 2825 | bin |= BYTE_OPERATION; |
| 2826 | check = TRUE; |
| 2827 | break; |
| 2828 | |
| 2829 | case 'w': |
| 2830 | /* Word operation - this is the default. */ |
| 2831 | check = TRUE; |
| 2832 | break; |
| 2833 | |
| 2834 | case 0: |
| 2835 | case ' ': |
| 2836 | case '\n': |
| 2837 | case '\r': |
| 2838 | as_warn (_("no size modifier after period, .w assumed")); |
| 2839 | break; |
| 2840 | |
| 2841 | default: |
| 2842 | as_bad (_("unrecognised instruction size modifier .%c"), |
| 2843 | * line); |
| 2844 | return 0; |
| 2845 | } |
| 2846 | |
| 2847 | if (check) |
| 2848 | { |
| 2849 | ++ line; |
| 2850 | |
| 2851 | } |
| 2852 | } |
| 2853 | |
| 2854 | if (*line && ! ISSPACE (*line)) |
| 2855 | { |
| 2856 | as_bad (_("junk found after instruction: %s.%s"), |
| 2857 | opcode->name, line); |
| 2858 | return 0; |
| 2859 | } |
| 2860 | |
| 2861 | /* Catch the case where the programmer has used a ".a" size modifier on an |
| 2862 | instruction that does not support it. Look for an alternative extended |
| 2863 | instruction that has the same name without the period. Eg: "add.a" |
| 2864 | becomes "adda". Although this not an officially supported way of |
| 2865 | specifying instruction aliases other MSP430 assemblers allow it. So we |
| 2866 | support it for compatibility purposes. */ |
| 2867 | if (addr_op && opcode->fmt >= 0) |
| 2868 | { |
| 2869 | const char * old_name = opcode->name; |
| 2870 | char real_name[32]; |
| 2871 | |
| 2872 | sprintf (real_name, "%sa", old_name); |
| 2873 | opcode = str_hash_find (msp430_hash, real_name); |
| 2874 | if (opcode == NULL) |
| 2875 | { |
| 2876 | as_bad (_("instruction %s.a does not exist"), old_name); |
| 2877 | return 0; |
| 2878 | } |
| 2879 | #if 0 /* Enable for debugging. */ |
| 2880 | as_warn ("treating %s.a as %s", old_name, real_name); |
| 2881 | #endif |
| 2882 | addr_op = FALSE; |
| 2883 | bin = opcode->bin_opcode; |
| 2884 | } |
| 2885 | |
| 2886 | if (opcode->fmt != -1 |
| 2887 | && opcode->insn_opnumb |
| 2888 | && (!*line || *line == '\n')) |
| 2889 | { |
| 2890 | as_bad (ngettext ("instruction %s requires %d operand", |
| 2891 | "instruction %s requires %d operands", |
| 2892 | opcode->insn_opnumb), |
| 2893 | opcode->name, opcode->insn_opnumb); |
| 2894 | return 0; |
| 2895 | } |
| 2896 | |
| 2897 | memset (l1, 0, sizeof (l1)); |
| 2898 | memset (l2, 0, sizeof (l2)); |
| 2899 | memset (&op1, 0, sizeof (op1)); |
| 2900 | memset (&op2, 0, sizeof (op2)); |
| 2901 | |
| 2902 | imm_op = FALSE; |
| 2903 | |
| 2904 | if ((fmt = opcode->fmt) < 0) |
| 2905 | { |
| 2906 | if (! target_is_430x ()) |
| 2907 | { |
| 2908 | as_bad (_("instruction %s requires MSP430X mcu"), |
| 2909 | opcode->name); |
| 2910 | return 0; |
| 2911 | } |
| 2912 | |
| 2913 | fmt = (-fmt) - 1; |
| 2914 | extended_op = TRUE; |
| 2915 | } |
| 2916 | |
| 2917 | if (repeat_count) |
| 2918 | { |
| 2919 | /* If requested set the extended instruction repeat count. */ |
| 2920 | if (extended_op) |
| 2921 | { |
| 2922 | if (repeat_count > 0) |
| 2923 | extended |= (repeat_count - 1); |
| 2924 | else |
| 2925 | extended |= (1 << 7) | (- repeat_count); |
| 2926 | } |
| 2927 | else |
| 2928 | as_bad (_("unable to repeat %s insn"), opcode->name); |
| 2929 | |
| 2930 | repeat_count = 0; |
| 2931 | } |
| 2932 | |
| 2933 | /* The previous instruction set this flag if it wants to check if this insn |
| 2934 | is a NOP. */ |
| 2935 | if (check_for_nop) |
| 2936 | { |
| 2937 | if (! is_opcode ("nop")) |
| 2938 | { |
| 2939 | do |
| 2940 | { |
| 2941 | switch (check_for_nop & - check_for_nop) |
| 2942 | { |
| 2943 | case NOP_CHECK_INTERRUPT: |
| 2944 | /* NOP_CHECK_INTERRUPT rules: |
| 2945 | 1. 430 and 430x ISA require a NOP after DINT. |
| 2946 | 2. Only the 430x ISA requires NOP before EINT (this has |
| 2947 | been dealt with in the previous call to this function). |
| 2948 | 3. Only the 430x ISA requires NOP after every EINT. |
| 2949 | CPU42 errata. */ |
| 2950 | if (gen_interrupt_nops || warn_interrupt_nops) |
| 2951 | { |
| 2952 | if (prev_insn_is_dint) |
| 2953 | { |
| 2954 | if (gen_interrupt_nops) |
| 2955 | { |
| 2956 | gen_nop (); |
| 2957 | if (warn_interrupt_nops) |
| 2958 | as_warn (_(INSERT_NOP_AFTER_DINT)); |
| 2959 | } |
| 2960 | else |
| 2961 | as_warn (_(WARN_NOP_AFTER_DINT)); |
| 2962 | } |
| 2963 | else if (prev_insn_is_eint) |
| 2964 | { |
| 2965 | if (gen_interrupt_nops) |
| 2966 | { |
| 2967 | gen_nop (); |
| 2968 | if (warn_interrupt_nops) |
| 2969 | as_warn (_(INSERT_NOP_AFTER_EINT)); |
| 2970 | } |
| 2971 | else |
| 2972 | as_warn (_(WARN_NOP_AFTER_EINT)); |
| 2973 | } |
| 2974 | /* If we get here it's because the last instruction was |
| 2975 | determined to either disable or enable interrupts, but |
| 2976 | we're not sure which. |
| 2977 | We have no information yet about what effect the |
| 2978 | current instruction has on interrupts, that has to be |
| 2979 | sorted out later. |
| 2980 | The last insn may have required a NOP after it, so we |
| 2981 | deal with that now. */ |
| 2982 | else |
| 2983 | { |
| 2984 | if (gen_interrupt_nops) |
| 2985 | { |
| 2986 | gen_nop (); |
| 2987 | if (warn_interrupt_nops) |
| 2988 | as_warn (_(INSERT_NOP_AFTER_UNKNOWN)); |
| 2989 | } |
| 2990 | else |
| 2991 | /* warn_unsure_interrupt was called on the previous |
| 2992 | insn. */ |
| 2993 | as_warn (_(WARN_NOP_AFTER_UNKNOWN)); |
| 2994 | } |
| 2995 | } |
| 2996 | break; |
| 2997 | |
| 2998 | case NOP_CHECK_CPU12: |
| 2999 | if (silicon_errata_warn & SILICON_ERRATA_CPU12) |
| 3000 | as_warn (_("CPU12: CMP/BIT with PC destination ignores next instruction")); |
| 3001 | |
| 3002 | if (silicon_errata_fix & SILICON_ERRATA_CPU12) |
| 3003 | gen_nop (); |
| 3004 | break; |
| 3005 | |
| 3006 | case NOP_CHECK_CPU19: |
| 3007 | if (silicon_errata_warn & SILICON_ERRATA_CPU19) |
| 3008 | as_warn (_("CPU19: Instruction setting CPUOFF must be followed by a NOP")); |
| 3009 | |
| 3010 | if (silicon_errata_fix & SILICON_ERRATA_CPU19) |
| 3011 | gen_nop (); |
| 3012 | break; |
| 3013 | |
| 3014 | default: |
| 3015 | as_bad (_("internal error: unknown nop check state")); |
| 3016 | break; |
| 3017 | } |
| 3018 | check_for_nop &= ~ (check_for_nop & - check_for_nop); |
| 3019 | } |
| 3020 | while (check_for_nop); |
| 3021 | } |
| 3022 | check_for_nop = 0; |
| 3023 | } |
| 3024 | |
| 3025 | switch (fmt) |
| 3026 | { |
| 3027 | case 0: |
| 3028 | /* Emulated. */ |
| 3029 | switch (opcode->insn_opnumb) |
| 3030 | { |
| 3031 | case 0: |
| 3032 | if (is_opcode ("eint")) |
| 3033 | warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); |
| 3034 | |
| 3035 | /* Set/clear bits instructions. */ |
| 3036 | if (extended_op) |
| 3037 | { |
| 3038 | if (!addr_op) |
| 3039 | extended |= BYTE_OPERATION; |
| 3040 | |
| 3041 | /* Emit the extension word. */ |
| 3042 | insn_length += 2; |
| 3043 | frag = frag_more (2); |
| 3044 | bfd_putl16 (extended, frag); |
| 3045 | } |
| 3046 | |
| 3047 | insn_length += 2; |
| 3048 | frag = frag_more (2); |
| 3049 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3050 | dwarf2_emit_insn (insn_length); |
| 3051 | break; |
| 3052 | |
| 3053 | case 1: |
| 3054 | /* Something which works with destination operand. */ |
| 3055 | line = extract_operand (line, l1, sizeof (l1)); |
| 3056 | res = msp430_dstoperand (&op1, l1, opcode->bin_opcode, extended_op, TRUE); |
| 3057 | if (res) |
| 3058 | break; |
| 3059 | |
| 3060 | bin |= (op1.reg | (op1.am << 7)); |
| 3061 | |
| 3062 | /* If the PC is the destination... */ |
| 3063 | if (op1.am == 0 && op1.reg == 0 |
| 3064 | /* ... and the opcode alters the SR. */ |
| 3065 | && !(is_opcode ("bic") || is_opcode ("bis") || is_opcode ("mov") |
| 3066 | || is_opcode ("bicx") || is_opcode ("bisx") || is_opcode ("movx"))) |
| 3067 | { |
| 3068 | if (silicon_errata_fix & SILICON_ERRATA_CPU11) |
| 3069 | as_bad (_("CPU11: PC is destination of SR altering instruction")); |
| 3070 | else if (silicon_errata_warn & SILICON_ERRATA_CPU11) |
| 3071 | as_warn (_("CPU11: PC is destination of SR altering instruction")); |
| 3072 | } |
| 3073 | |
| 3074 | /* If the status register is the destination... */ |
| 3075 | if (op1.am == 0 && op1.reg == 2 |
| 3076 | /* ... and the opcode alters the SR. */ |
| 3077 | && (is_opcode ("adc") || is_opcode ("dec") || is_opcode ("decd") |
| 3078 | || is_opcode ("inc") || is_opcode ("incd") || is_opcode ("inv") |
| 3079 | || is_opcode ("sbc") || is_opcode ("sxt") |
| 3080 | || is_opcode ("adcx") || is_opcode ("decx") || is_opcode ("decdx") |
| 3081 | || is_opcode ("incx") || is_opcode ("incdx") || is_opcode ("invx") |
| 3082 | || is_opcode ("sbcx") |
| 3083 | )) |
| 3084 | { |
| 3085 | if (silicon_errata_fix & SILICON_ERRATA_CPU13) |
| 3086 | as_bad (_("CPU13: SR is destination of SR altering instruction")); |
| 3087 | else if (silicon_errata_warn & SILICON_ERRATA_CPU13) |
| 3088 | as_warn (_("CPU13: SR is destination of SR altering instruction")); |
| 3089 | } |
| 3090 | |
| 3091 | /* Compute the entire instruction length, in bytes. */ |
| 3092 | op_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2); |
| 3093 | insn_length += op_length; |
| 3094 | frag = frag_more (op_length); |
| 3095 | where = frag - frag_now->fr_literal; |
| 3096 | |
| 3097 | if (extended_op) |
| 3098 | { |
| 3099 | if (!addr_op) |
| 3100 | extended |= BYTE_OPERATION; |
| 3101 | |
| 3102 | if (op1.ol != 0 && ((extended & 0xf) != 0)) |
| 3103 | { |
| 3104 | as_bad (_("repeat instruction used with non-register mode instruction")); |
| 3105 | extended &= ~ 0xf; |
| 3106 | } |
| 3107 | |
| 3108 | if (op1.mode == OP_EXP) |
| 3109 | { |
| 3110 | if (op1.exp.X_op == O_constant) |
| 3111 | extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; |
| 3112 | |
| 3113 | else if (op1.reg || op1.am == 3) /* Not PC relative. */ |
| 3114 | fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, |
| 3115 | BFD_RELOC_MSP430X_ABS20_EXT_SRC); |
| 3116 | else |
| 3117 | fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, |
| 3118 | BFD_RELOC_MSP430X_PCR20_EXT_SRC); |
| 3119 | } |
| 3120 | |
| 3121 | /* Emit the extension word. */ |
| 3122 | bfd_putl16 (extended, frag); |
| 3123 | frag += 2; |
| 3124 | where += 2; |
| 3125 | } |
| 3126 | |
| 3127 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3128 | frag += 2; |
| 3129 | where += 2; |
| 3130 | |
| 3131 | if (op1.mode == OP_EXP) |
| 3132 | { |
| 3133 | if (op1.exp.X_op == O_constant) |
| 3134 | { |
| 3135 | bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); |
| 3136 | } |
| 3137 | else |
| 3138 | { |
| 3139 | bfd_putl16 ((bfd_vma) ZEROS, frag); |
| 3140 | |
| 3141 | if (!extended_op) |
| 3142 | { |
| 3143 | if (op1.reg) |
| 3144 | fix_new_exp (frag_now, where, 2, |
| 3145 | &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); |
| 3146 | else |
| 3147 | fix_new_exp (frag_now, where, 2, |
| 3148 | &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); |
| 3149 | } |
| 3150 | } |
| 3151 | } |
| 3152 | |
| 3153 | dwarf2_emit_insn (insn_length); |
| 3154 | break; |
| 3155 | |
| 3156 | case 2: |
| 3157 | /* Shift instruction. */ |
| 3158 | line = extract_operand (line, l1, sizeof (l1)); |
| 3159 | strncpy (l2, l1, sizeof (l2)); |
| 3160 | l2[sizeof (l2) - 1] = '\0'; |
| 3161 | res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, TRUE); |
| 3162 | res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, extended_op, TRUE); |
| 3163 | |
| 3164 | if (res) |
| 3165 | break; /* An error occurred. All warnings were done before. */ |
| 3166 | |
| 3167 | insn_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2) + (op2.ol * 2); |
| 3168 | frag = frag_more (insn_length); |
| 3169 | where = frag - frag_now->fr_literal; |
| 3170 | |
| 3171 | if (target_is_430xv2 () |
| 3172 | && op1.mode == OP_REG |
| 3173 | && op1.reg == 0 |
| 3174 | && (is_opcode ("rlax") |
| 3175 | || is_opcode ("rlcx") |
| 3176 | || is_opcode ("rla") |
| 3177 | || is_opcode ("rlc"))) |
| 3178 | { |
| 3179 | as_bad (_("%s: attempt to rotate the PC register"), opcode->name); |
| 3180 | break; |
| 3181 | } |
| 3182 | |
| 3183 | /* If the status register is the destination... */ |
| 3184 | if (op1.am == 0 && op1.reg == 2 |
| 3185 | /* ... and the opcode alters the SR. */ |
| 3186 | && (is_opcode ("rla") || is_opcode ("rlc") |
| 3187 | || is_opcode ("rlax") || is_opcode ("rlcx") |
| 3188 | || is_opcode ("sxt") || is_opcode ("sxtx") |
| 3189 | || is_opcode ("swpb") |
| 3190 | )) |
| 3191 | { |
| 3192 | if (silicon_errata_fix & SILICON_ERRATA_CPU13) |
| 3193 | as_bad (_("CPU13: SR is destination of SR altering instruction")); |
| 3194 | else if (silicon_errata_warn & SILICON_ERRATA_CPU13) |
| 3195 | as_warn (_("CPU13: SR is destination of SR altering instruction")); |
| 3196 | } |
| 3197 | |
| 3198 | if (extended_op) |
| 3199 | { |
| 3200 | if (!addr_op) |
| 3201 | extended |= BYTE_OPERATION; |
| 3202 | |
| 3203 | if ((op1.ol != 0 || op2.ol != 0) && ((extended & 0xf) != 0)) |
| 3204 | { |
| 3205 | as_bad (_("repeat instruction used with non-register mode instruction")); |
| 3206 | extended &= ~ 0xf; |
| 3207 | } |
| 3208 | |
| 3209 | if (op1.mode == OP_EXP) |
| 3210 | { |
| 3211 | if (op1.exp.X_op == O_constant) |
| 3212 | extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; |
| 3213 | |
| 3214 | else if (op1.reg || op1.am == 3) /* Not PC relative. */ |
| 3215 | fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, |
| 3216 | BFD_RELOC_MSP430X_ABS20_EXT_SRC); |
| 3217 | else |
| 3218 | fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, |
| 3219 | BFD_RELOC_MSP430X_PCR20_EXT_SRC); |
| 3220 | } |
| 3221 | |
| 3222 | if (op2.mode == OP_EXP) |
| 3223 | { |
| 3224 | if (op2.exp.X_op == O_constant) |
| 3225 | extended |= (op2.exp.X_add_number >> 16) & 0xf; |
| 3226 | |
| 3227 | else if (op1.mode == OP_EXP) |
| 3228 | fix_new_exp (frag_now, where, 8, &(op2.exp), FALSE, |
| 3229 | op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_ODST |
| 3230 | : BFD_RELOC_MSP430X_PCR20_EXT_ODST); |
| 3231 | else |
| 3232 | fix_new_exp (frag_now, where, 6, &(op2.exp), FALSE, |
| 3233 | op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_DST |
| 3234 | : BFD_RELOC_MSP430X_PCR20_EXT_DST); |
| 3235 | } |
| 3236 | |
| 3237 | /* Emit the extension word. */ |
| 3238 | bfd_putl16 (extended, frag); |
| 3239 | frag += 2; |
| 3240 | where += 2; |
| 3241 | } |
| 3242 | |
| 3243 | bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7)); |
| 3244 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3245 | frag += 2; |
| 3246 | where += 2; |
| 3247 | |
| 3248 | if (op1.mode == OP_EXP) |
| 3249 | { |
| 3250 | if (op1.exp.X_op == O_constant) |
| 3251 | { |
| 3252 | bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); |
| 3253 | } |
| 3254 | else |
| 3255 | { |
| 3256 | bfd_putl16 ((bfd_vma) ZEROS, frag); |
| 3257 | |
| 3258 | if (!extended_op) |
| 3259 | { |
| 3260 | if (op1.reg || op1.am == 3) /* Not PC relative. */ |
| 3261 | fix_new_exp (frag_now, where, 2, |
| 3262 | &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); |
| 3263 | else |
| 3264 | fix_new_exp (frag_now, where, 2, |
| 3265 | &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); |
| 3266 | } |
| 3267 | } |
| 3268 | frag += 2; |
| 3269 | where += 2; |
| 3270 | } |
| 3271 | |
| 3272 | if (op2.mode == OP_EXP) |
| 3273 | { |
| 3274 | if (op2.exp.X_op == O_constant) |
| 3275 | { |
| 3276 | bfd_putl16 (op2.exp.X_add_number & 0xffff, frag); |
| 3277 | } |
| 3278 | else |
| 3279 | { |
| 3280 | bfd_putl16 ((bfd_vma) ZEROS, frag); |
| 3281 | |
| 3282 | if (!extended_op) |
| 3283 | { |
| 3284 | if (op2.reg) /* Not PC relative. */ |
| 3285 | fix_new_exp (frag_now, where, 2, |
| 3286 | &(op2.exp), FALSE, CHECK_RELOC_MSP430 (op2)); |
| 3287 | else |
| 3288 | fix_new_exp (frag_now, where, 2, |
| 3289 | &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL); |
| 3290 | } |
| 3291 | } |
| 3292 | } |
| 3293 | |
| 3294 | dwarf2_emit_insn (insn_length); |
| 3295 | break; |
| 3296 | |
| 3297 | case 3: |
| 3298 | /* Branch instruction => mov dst, r0. */ |
| 3299 | if (extended_op) |
| 3300 | { |
| 3301 | as_bad ("Internal error: state 0/3 not coded for extended instructions"); |
| 3302 | break; |
| 3303 | } |
| 3304 | |
| 3305 | line = extract_operand (line, l1, sizeof (l1)); |
| 3306 | res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, FALSE); |
| 3307 | if (res) |
| 3308 | break; |
| 3309 | |
| 3310 | byte_op = FALSE; |
| 3311 | imm_op = FALSE; |
| 3312 | bin |= ((op1.reg << 8) | (op1.am << 4)); |
| 3313 | op_length = 2 + 2 * op1.ol; |
| 3314 | frag = frag_more (op_length); |
| 3315 | where = frag - frag_now->fr_literal; |
| 3316 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3317 | |
| 3318 | if (op1.mode == OP_EXP) |
| 3319 | { |
| 3320 | if (op1.exp.X_op == O_constant) |
| 3321 | { |
| 3322 | bfd_putl16 (op1.exp.X_add_number & 0xffff, frag + 2); |
| 3323 | } |
| 3324 | else |
| 3325 | { |
| 3326 | where += 2; |
| 3327 | |
| 3328 | bfd_putl16 ((bfd_vma) ZEROS, frag + 2); |
| 3329 | |
| 3330 | if (op1.reg || op1.am == 3) |
| 3331 | fix_new_exp (frag_now, where, 2, |
| 3332 | &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); |
| 3333 | else |
| 3334 | fix_new_exp (frag_now, where, 2, |
| 3335 | &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); |
| 3336 | } |
| 3337 | } |
| 3338 | |
| 3339 | dwarf2_emit_insn (insn_length + op_length); |
| 3340 | break; |
| 3341 | |
| 3342 | case 4: |
| 3343 | /* CALLA instructions. */ |
| 3344 | fix_emitted = FALSE; |
| 3345 | |
| 3346 | line = extract_operand (line, l1, sizeof (l1)); |
| 3347 | imm_op = FALSE; |
| 3348 | |
| 3349 | res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, |
| 3350 | extended_op, FALSE); |
| 3351 | if (res) |
| 3352 | break; |
| 3353 | |
| 3354 | byte_op = FALSE; |
| 3355 | |
| 3356 | op_length = 2 + 2 * op1.ol; |
| 3357 | frag = frag_more (op_length); |
| 3358 | where = frag - frag_now->fr_literal; |
| 3359 | |
| 3360 | if (imm_op) |
| 3361 | { |
| 3362 | if (op1.am == 3) |
| 3363 | { |
| 3364 | bin |= 0xb0; |
| 3365 | |
| 3366 | fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, |
| 3367 | BFD_RELOC_MSP430X_ABS20_ADR_DST); |
| 3368 | fix_emitted = TRUE; |
| 3369 | } |
| 3370 | else if (op1.am == 1) |
| 3371 | { |
| 3372 | if (op1.reg == 0) |
| 3373 | { |
| 3374 | bin |= 0x90; |
| 3375 | |
| 3376 | fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, |
| 3377 | BFD_RELOC_MSP430X_PCR20_CALL); |
| 3378 | fix_emitted = TRUE; |
| 3379 | } |
| 3380 | else |
| 3381 | bin |= 0x50 | op1.reg; |
| 3382 | } |
| 3383 | else if (op1.am == 0) |
| 3384 | bin |= 0x40 | op1.reg; |
| 3385 | } |
| 3386 | else if (op1.am == 1) |
| 3387 | { |
| 3388 | bin |= 0x80; |
| 3389 | |
| 3390 | fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, |
| 3391 | BFD_RELOC_MSP430X_ABS20_ADR_DST); |
| 3392 | fix_emitted = TRUE; |
| 3393 | } |
| 3394 | else if (op1.am == 2) |
| 3395 | bin |= 0x60 | op1.reg; |
| 3396 | else if (op1.am == 3) |
| 3397 | bin |= 0x70 | op1.reg; |
| 3398 | |
| 3399 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3400 | |
| 3401 | if (op1.mode == OP_EXP) |
| 3402 | { |
| 3403 | if (op1.ol != 1) |
| 3404 | { |
| 3405 | as_bad ("Internal error: unexpected CALLA instruction length: %d\n", op1.ol); |
| 3406 | break; |
| 3407 | } |
| 3408 | |
| 3409 | bfd_putl16 ((bfd_vma) ZEROS, frag + 2); |
| 3410 | |
| 3411 | if (! fix_emitted) |
| 3412 | fix_new_exp (frag_now, where + 2, 2, |
| 3413 | &(op1.exp), FALSE, BFD_RELOC_16); |
| 3414 | } |
| 3415 | |
| 3416 | dwarf2_emit_insn (insn_length + op_length); |
| 3417 | break; |
| 3418 | |
| 3419 | case 5: |
| 3420 | { |
| 3421 | int n; |
| 3422 | int reg; |
| 3423 | |
| 3424 | /* [POP|PUSH]M[.A] #N, Rd */ |
| 3425 | line = extract_operand (line, l1, sizeof (l1)); |
| 3426 | line = extract_operand (line, l2, sizeof (l2)); |
| 3427 | |
| 3428 | if (*l1 != '#') |
| 3429 | { |
| 3430 | as_bad (_("expected #n as first argument of %s"), opcode->name); |
| 3431 | break; |
| 3432 | } |
| 3433 | end = parse_exp (l1 + 1, &(op1.exp)); |
| 3434 | if (end != NULL && *end != 0) |
| 3435 | { |
| 3436 | as_bad (_("extra characters '%s' at end of constant expression '%s'"), end, l1); |
| 3437 | break; |
| 3438 | } |
| 3439 | if (op1.exp.X_op != O_constant) |
| 3440 | { |
| 3441 | as_bad (_("expected constant expression as first argument of %s"), |
| 3442 | opcode->name); |
| 3443 | break; |
| 3444 | } |
| 3445 | |
| 3446 | if ((reg = check_reg (l2)) == -1) |
| 3447 | { |
| 3448 | as_bad (_("expected register as second argument of %s"), |
| 3449 | opcode->name); |
| 3450 | break; |
| 3451 | } |
| 3452 | |
| 3453 | op_length = 2; |
| 3454 | frag = frag_more (op_length); |
| 3455 | where = frag - frag_now->fr_literal; |
| 3456 | bin = opcode->bin_opcode; |
| 3457 | if (! addr_op) |
| 3458 | bin |= 0x100; |
| 3459 | n = op1.exp.X_add_number; |
| 3460 | bin |= (n - 1) << 4; |
| 3461 | if (is_opcode ("pushm")) |
| 3462 | bin |= reg; |
| 3463 | else |
| 3464 | { |
| 3465 | if (reg - n + 1 < 0) |
| 3466 | { |
| 3467 | as_bad (_("Too many registers popped")); |
| 3468 | break; |
| 3469 | } |
| 3470 | |
| 3471 | /* CPU21 errata: cannot use POPM to restore the SR register. */ |
| 3472 | if (target_is_430xv2 () |
| 3473 | && (reg - n + 1 < 3) |
| 3474 | && reg >= 2 |
| 3475 | && is_opcode ("popm")) |
| 3476 | { |
| 3477 | as_bad (_("Cannot use POPM to restore the SR register")); |
| 3478 | break; |
| 3479 | } |
| 3480 | |
| 3481 | bin |= (reg - n + 1); |
| 3482 | } |
| 3483 | |
| 3484 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3485 | dwarf2_emit_insn (op_length); |
| 3486 | break; |
| 3487 | } |
| 3488 | |
| 3489 | case 6: |
| 3490 | { |
| 3491 | int n; |
| 3492 | int reg; |
| 3493 | |
| 3494 | /* Bit rotation instructions. RRCM, RRAM, RRUM, RLAM. */ |
| 3495 | if (extended & 0xff) |
| 3496 | { |
| 3497 | as_bad (_("repeat count cannot be used with %s"), opcode->name); |
| 3498 | break; |
| 3499 | } |
| 3500 | |
| 3501 | line = extract_operand (line, l1, sizeof (l1)); |
| 3502 | line = extract_operand (line, l2, sizeof (l2)); |
| 3503 | |
| 3504 | if (*l1 != '#') |
| 3505 | { |
| 3506 | as_bad (_("expected #n as first argument of %s"), opcode->name); |
| 3507 | break; |
| 3508 | } |
| 3509 | end = parse_exp (l1 + 1, &(op1.exp)); |
| 3510 | if (end != NULL && *end != 0) |
| 3511 | { |
| 3512 | as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); |
| 3513 | break; |
| 3514 | } |
| 3515 | if (op1.exp.X_op != O_constant) |
| 3516 | { |
| 3517 | as_bad (_("expected constant expression as first argument of %s"), |
| 3518 | opcode->name); |
| 3519 | break; |
| 3520 | } |
| 3521 | n = op1.exp.X_add_number; |
| 3522 | if (n > 4 || n < 1) |
| 3523 | { |
| 3524 | as_bad (_("expected first argument of %s to be in the range 1-4"), |
| 3525 | opcode->name); |
| 3526 | break; |
| 3527 | } |
| 3528 | |
| 3529 | if ((reg = check_reg (l2)) == -1) |
| 3530 | { |
| 3531 | as_bad (_("expected register as second argument of %s"), |
| 3532 | opcode->name); |
| 3533 | break; |
| 3534 | } |
| 3535 | |
| 3536 | if (target_is_430xv2 () && reg == 0) |
| 3537 | { |
| 3538 | as_bad (_("%s: attempt to rotate the PC register"), opcode->name); |
| 3539 | break; |
| 3540 | } |
| 3541 | |
| 3542 | op_length = 2; |
| 3543 | frag = frag_more (op_length); |
| 3544 | where = frag - frag_now->fr_literal; |
| 3545 | |
| 3546 | bin = opcode->bin_opcode; |
| 3547 | if (! addr_op) |
| 3548 | bin |= 0x10; |
| 3549 | bin |= (n - 1) << 10; |
| 3550 | bin |= reg; |
| 3551 | |
| 3552 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3553 | dwarf2_emit_insn (op_length); |
| 3554 | break; |
| 3555 | } |
| 3556 | |
| 3557 | case 8: |
| 3558 | { |
| 3559 | bfd_boolean need_reloc = FALSE; |
| 3560 | int n; |
| 3561 | int reg; |
| 3562 | |
| 3563 | /* ADDA, CMPA and SUBA address instructions. */ |
| 3564 | if (extended & 0xff) |
| 3565 | { |
| 3566 | as_bad (_("repeat count cannot be used with %s"), opcode->name); |
| 3567 | break; |
| 3568 | } |
| 3569 | |
| 3570 | line = extract_operand (line, l1, sizeof (l1)); |
| 3571 | line = extract_operand (line, l2, sizeof (l2)); |
| 3572 | |
| 3573 | bin = opcode->bin_opcode; |
| 3574 | |
| 3575 | if (*l1 == '#') |
| 3576 | { |
| 3577 | end = parse_exp (l1 + 1, &(op1.exp)); |
| 3578 | if (end != NULL && *end != 0) |
| 3579 | { |
| 3580 | as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); |
| 3581 | break; |
| 3582 | } |
| 3583 | |
| 3584 | if (op1.exp.X_op == O_constant) |
| 3585 | { |
| 3586 | n = op1.exp.X_add_number; |
| 3587 | if (n > 0xfffff || n < - (0x7ffff)) |
| 3588 | { |
| 3589 | as_bad (_("expected value of first argument of %s to fit into 20-bits"), |
| 3590 | opcode->name); |
| 3591 | break; |
| 3592 | } |
| 3593 | |
| 3594 | bin |= ((n >> 16) & 0xf) << 8; |
| 3595 | } |
| 3596 | else |
| 3597 | { |
| 3598 | n = 0; |
| 3599 | need_reloc = TRUE; |
| 3600 | } |
| 3601 | |
| 3602 | op_length = 4; |
| 3603 | } |
| 3604 | else |
| 3605 | { |
| 3606 | if ((n = check_reg (l1)) == -1) |
| 3607 | { |
| 3608 | as_bad (_("expected register name or constant as first argument of %s"), |
| 3609 | opcode->name); |
| 3610 | break; |
| 3611 | } |
| 3612 | |
| 3613 | bin |= (n << 8) | (1 << 6); |
| 3614 | op_length = 2; |
| 3615 | } |
| 3616 | |
| 3617 | if ((reg = check_reg (l2)) == -1) |
| 3618 | { |
| 3619 | as_bad (_("expected register as second argument of %s"), |
| 3620 | opcode->name); |
| 3621 | break; |
| 3622 | } |
| 3623 | |
| 3624 | frag = frag_more (op_length); |
| 3625 | where = frag - frag_now->fr_literal; |
| 3626 | bin |= reg; |
| 3627 | if (need_reloc) |
| 3628 | fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE, |
| 3629 | BFD_RELOC_MSP430X_ABS20_ADR_SRC); |
| 3630 | |
| 3631 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3632 | if (op_length == 4) |
| 3633 | bfd_putl16 ((bfd_vma) (n & 0xffff), frag + 2); |
| 3634 | dwarf2_emit_insn (op_length); |
| 3635 | break; |
| 3636 | } |
| 3637 | |
| 3638 | case 9: /* MOVA, BRA, RETA. */ |
| 3639 | imm_op = FALSE; |
| 3640 | bin = opcode->bin_opcode; |
| 3641 | |
| 3642 | if (is_opcode ("reta")) |
| 3643 | { |
| 3644 | /* The RETA instruction does not take any arguments. |
| 3645 | The implicit first argument is @SP+. |
| 3646 | The implicit second argument is PC. */ |
| 3647 | op1.mode = OP_REG; |
| 3648 | op1.am = 3; |
| 3649 | op1.reg = 1; |
| 3650 | |
| 3651 | op2.mode = OP_REG; |
| 3652 | op2.reg = 0; |
| 3653 | } |
| 3654 | else |
| 3655 | { |
| 3656 | line = extract_operand (line, l1, sizeof (l1)); |
| 3657 | res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, |
| 3658 | &imm_op, extended_op, FALSE); |
| 3659 | |
| 3660 | if (is_opcode ("bra")) |
| 3661 | { |
| 3662 | /* This is the BRA synthetic instruction. |
| 3663 | The second argument is always PC. */ |
| 3664 | op2.mode = OP_REG; |
| 3665 | op2.reg = 0; |
| 3666 | } |
| 3667 | else |
| 3668 | { |
| 3669 | line = extract_operand (line, l2, sizeof (l2)); |
| 3670 | res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, |
| 3671 | extended_op, TRUE); |
| 3672 | } |
| 3673 | |
| 3674 | if (res) |
| 3675 | break; /* Error occurred. All warnings were done before. */ |
| 3676 | } |
| 3677 | |
| 3678 | /* Only a restricted subset of the normal MSP430 addressing modes |
| 3679 | are supported here, so check for the ones that are allowed. */ |
| 3680 | if ((op_length = try_encode_mova (imm_op, bin, & op1, & op2, |
| 3681 | & error_message)) == 0) |
| 3682 | { |
| 3683 | as_bad (error_message, opcode->name); |
| 3684 | break; |
| 3685 | } |
| 3686 | dwarf2_emit_insn (op_length); |
| 3687 | break; |
| 3688 | |
| 3689 | case 10: /* RPT */ |
| 3690 | line = extract_operand (line, l1, sizeof l1); |
| 3691 | /* The RPT instruction only accepted immediates and registers. */ |
| 3692 | if (*l1 == '#') |
| 3693 | { |
| 3694 | end = parse_exp (l1 + 1, &(op1.exp)); |
| 3695 | if (end != NULL && *end != 0) |
| 3696 | { |
| 3697 | as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); |
| 3698 | break; |
| 3699 | } |
| 3700 | if (op1.exp.X_op != O_constant) |
| 3701 | { |
| 3702 | as_bad (_("expected constant value as argument to RPT")); |
| 3703 | break; |
| 3704 | } |
| 3705 | if (op1.exp.X_add_number < 1 |
| 3706 | || op1.exp.X_add_number > (1 << 4)) |
| 3707 | { |
| 3708 | as_bad (_("expected constant in the range 2..16")); |
| 3709 | break; |
| 3710 | } |
| 3711 | |
| 3712 | /* We silently accept and ignore a repeat count of 1. */ |
| 3713 | if (op1.exp.X_add_number > 1) |
| 3714 | repeat_count = op1.exp.X_add_number; |
| 3715 | } |
| 3716 | else |
| 3717 | { |
| 3718 | int reg; |
| 3719 | |
| 3720 | if ((reg = check_reg (l1)) != -1) |
| 3721 | { |
| 3722 | if (reg == 0) |
| 3723 | as_warn (_("PC used as an argument to RPT")); |
| 3724 | else |
| 3725 | repeat_count = - reg; |
| 3726 | } |
| 3727 | else |
| 3728 | { |
| 3729 | as_bad (_("expected constant or register name as argument to RPT insn")); |
| 3730 | break; |
| 3731 | } |
| 3732 | } |
| 3733 | break; |
| 3734 | |
| 3735 | default: |
| 3736 | as_bad (_("Illegal emulated instruction")); |
| 3737 | break; |
| 3738 | } |
| 3739 | break; |
| 3740 | |
| 3741 | /* FIXME: Emit warning when dest reg SR(R2) is addressed with .B or .A. |
| 3742 | From f5 ref man 6.3.3: |
| 3743 | The 16-bit Status Register (SR, also called R2), used as a source or |
| 3744 | destination register, can only be used in register mode addressed |
| 3745 | with word instructions. */ |
| 3746 | |
| 3747 | case 1: /* Format 1, double operand. */ |
| 3748 | line = extract_operand (line, l1, sizeof (l1)); |
| 3749 | line = extract_operand (line, l2, sizeof (l2)); |
| 3750 | res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, TRUE); |
| 3751 | res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, extended_op, TRUE); |
| 3752 | |
| 3753 | if (res) |
| 3754 | break; /* Error occurred. All warnings were done before. */ |
| 3755 | |
| 3756 | if (extended_op |
| 3757 | && is_opcode ("movx") |
| 3758 | && addr_op |
| 3759 | && msp430_enable_relax) |
| 3760 | { |
| 3761 | /* This is the MOVX.A instruction. See if we can convert |
| 3762 | it into the MOVA instruction instead. This saves 2 bytes. */ |
| 3763 | if ((op_length = try_encode_mova (imm_op, 0x0000, & op1, & op2, |
| 3764 | NULL)) != 0) |
| 3765 | { |
| 3766 | dwarf2_emit_insn (op_length); |
| 3767 | break; |
| 3768 | } |
| 3769 | } |
| 3770 | |
| 3771 | bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7)); |
| 3772 | |
| 3773 | /* If the PC is the destination... */ |
| 3774 | if (op2.am == 0 && op2.reg == 0 |
| 3775 | /* ... and the opcode alters the SR. */ |
| 3776 | && !(is_opcode ("bic") || is_opcode ("bis") || is_opcode ("mov") |
| 3777 | || is_opcode ("bicx") || is_opcode ("bisx") || is_opcode ("movx"))) |
| 3778 | { |
| 3779 | if (silicon_errata_fix & SILICON_ERRATA_CPU11) |
| 3780 | as_bad (_("CPU11: PC is destination of SR altering instruction")); |
| 3781 | else if (silicon_errata_warn & SILICON_ERRATA_CPU11) |
| 3782 | as_warn (_("CPU11: PC is destination of SR altering instruction")); |
| 3783 | } |
| 3784 | |
| 3785 | /* If the status register is the destination... */ |
| 3786 | if (op2.am == 0 && op2.reg == 2 |
| 3787 | /* ... and the opcode alters the SR. */ |
| 3788 | && (is_opcode ("add") || is_opcode ("addc") || is_opcode ("and") |
| 3789 | || is_opcode ("dadd") || is_opcode ("sub") || is_opcode ("subc") |
| 3790 | || is_opcode ("xor") |
| 3791 | || is_opcode ("addx") || is_opcode ("addcx") || is_opcode ("andx") |
| 3792 | || is_opcode ("daddx") || is_opcode ("subx") || is_opcode ("subcx") |
| 3793 | || is_opcode ("xorx") |
| 3794 | )) |
| 3795 | { |
| 3796 | if (silicon_errata_fix & SILICON_ERRATA_CPU13) |
| 3797 | as_bad (_("CPU13: SR is destination of SR altering instruction")); |
| 3798 | else if (silicon_errata_warn & SILICON_ERRATA_CPU13) |
| 3799 | as_warn (_("CPU13: SR is destination of SR altering instruction")); |
| 3800 | } |
| 3801 | |
| 3802 | /* Chain these checks for SR manipulations so we can warn if they are not |
| 3803 | caught. */ |
| 3804 | if (((is_opcode ("bis") && bin == 0xd032) |
| 3805 | || (is_opcode ("mov") && bin == 0x4032) |
| 3806 | || (is_opcode ("xor") && bin == 0xe032)) |
| 3807 | && op1.mode == OP_EXP |
| 3808 | && op1.exp.X_op == O_constant |
| 3809 | && (op1.exp.X_add_number & 0x10) == 0x10) |
| 3810 | check_for_nop |= NOP_CHECK_CPU19; |
| 3811 | else if ((is_opcode ("mov") && op2.mode == OP_REG && op2.reg == 2)) |
| 3812 | { |
| 3813 | /* Any MOV with the SR as the destination either enables or disables |
| 3814 | interrupts. */ |
| 3815 | if (op1.mode == OP_EXP |
| 3816 | && op1.exp.X_op == O_constant) |
| 3817 | { |
| 3818 | if ((op1.exp.X_add_number & 0x8) == 0x8) |
| 3819 | { |
| 3820 | /* The GIE bit is being set. */ |
| 3821 | warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); |
| 3822 | this_insn_is_eint = TRUE; |
| 3823 | } |
| 3824 | else |
| 3825 | /* The GIE bit is being cleared. */ |
| 3826 | this_insn_is_dint = TRUE; |
| 3827 | } |
| 3828 | /* If an immediate value which is covered by the constant generator |
| 3829 | is the src, then op1 will have been changed to either R2 or R3 by |
| 3830 | this point. |
| 3831 | The only constants covered by CG1 and CG2, which have bit 3 set |
| 3832 | and therefore would enable interrupts when writing to the SR, are |
| 3833 | R2 with addresing mode 0b11 and R3 with 0b11. |
| 3834 | The addressing mode is in bits 5:4 of the binary opcode. */ |
| 3835 | else if (op1.mode == OP_REG |
| 3836 | && (op1.reg == 2 || op1.reg == 3) |
| 3837 | && (bin & 0x30) == 0x30) |
| 3838 | { |
| 3839 | warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); |
| 3840 | this_insn_is_eint = TRUE; |
| 3841 | } |
| 3842 | /* Any other use of the constant generator with destination R2, will |
| 3843 | disable interrupts. */ |
| 3844 | else if (op1.mode == OP_REG |
| 3845 | && (op1.reg == 2 || op1.reg == 3)) |
| 3846 | this_insn_is_dint = TRUE; |
| 3847 | else if (do_unknown_interrupt_nops) |
| 3848 | { |
| 3849 | /* FIXME: Couldn't work out whether the insn is enabling or |
| 3850 | disabling interrupts, so for safety need to treat it as both |
| 3851 | a DINT and EINT. */ |
| 3852 | warn_unsure_interrupt (prev_insn_is_nop, prev_insn_is_dint); |
| 3853 | check_for_nop |= NOP_CHECK_INTERRUPT; |
| 3854 | } |
| 3855 | } |
| 3856 | else if (is_eint (opcode->name, bin)) |
| 3857 | warn_eint_nop (prev_insn_is_nop, prev_insn_is_dint); |
| 3858 | else if ((bin & 0x32) == 0x32) |
| 3859 | { |
| 3860 | /* Double-operand insn with the As==0b11 and Rdst==0x2 will result in |
| 3861 | * an interrupt state change if a write happens. */ |
| 3862 | /* FIXME: How strict to be here? */ |
| 3863 | ; |
| 3864 | } |
| 3865 | |
| 3866 | /* Compute the entire length of the instruction in bytes. */ |
| 3867 | op_length = (extended_op ? 2 : 0) /* The extension word. */ |
| 3868 | + 2 /* The opcode */ |
| 3869 | + (2 * op1.ol) /* The first operand. */ |
| 3870 | + (2 * op2.ol); /* The second operand. */ |
| 3871 | |
| 3872 | insn_length += op_length; |
| 3873 | frag = frag_more (op_length); |
| 3874 | where = frag - frag_now->fr_literal; |
| 3875 | |
| 3876 | if (extended_op) |
| 3877 | { |
| 3878 | if (!addr_op) |
| 3879 | extended |= BYTE_OPERATION; |
| 3880 | |
| 3881 | if ((op1.ol != 0 || op2.ol != 0) && ((extended & 0xf) != 0)) |
| 3882 | { |
| 3883 | as_bad (_("repeat instruction used with non-register mode instruction")); |
| 3884 | extended &= ~ 0xf; |
| 3885 | } |
| 3886 | |
| 3887 | /* If necessary, emit a reloc to update the extension word. */ |
| 3888 | if (op1.mode == OP_EXP) |
| 3889 | { |
| 3890 | if (op1.exp.X_op == O_constant) |
| 3891 | extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; |
| 3892 | |
| 3893 | else if (op1.reg || op1.am == 3) /* Not PC relative. */ |
| 3894 | fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, |
| 3895 | BFD_RELOC_MSP430X_ABS20_EXT_SRC); |
| 3896 | else |
| 3897 | fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, |
| 3898 | BFD_RELOC_MSP430X_PCR20_EXT_SRC); |
| 3899 | } |
| 3900 | |
| 3901 | if (op2.mode == OP_EXP) |
| 3902 | { |
| 3903 | if (op2.exp.X_op == O_constant) |
| 3904 | extended |= (op2.exp.X_add_number >> 16) & 0xf; |
| 3905 | |
| 3906 | else if (op1.mode == OP_EXP) |
| 3907 | fix_new_exp (frag_now, where, 8, &(op2.exp), FALSE, |
| 3908 | op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_ODST |
| 3909 | : BFD_RELOC_MSP430X_PCR20_EXT_ODST); |
| 3910 | |
| 3911 | else |
| 3912 | fix_new_exp (frag_now, where, 6, &(op2.exp), FALSE, |
| 3913 | op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_DST |
| 3914 | : BFD_RELOC_MSP430X_PCR20_EXT_DST); |
| 3915 | } |
| 3916 | |
| 3917 | /* Emit the extension word. */ |
| 3918 | bfd_putl16 (extended, frag); |
| 3919 | where += 2; |
| 3920 | frag += 2; |
| 3921 | } |
| 3922 | |
| 3923 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3924 | where += 2; |
| 3925 | frag += 2; |
| 3926 | |
| 3927 | if (op1.mode == OP_EXP) |
| 3928 | { |
| 3929 | if (op1.exp.X_op == O_constant) |
| 3930 | { |
| 3931 | bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); |
| 3932 | } |
| 3933 | else |
| 3934 | { |
| 3935 | bfd_putl16 ((bfd_vma) ZEROS, frag); |
| 3936 | |
| 3937 | if (!extended_op) |
| 3938 | { |
| 3939 | if (op1.reg || op1.am == 3) /* Not PC relative. */ |
| 3940 | fix_new_exp (frag_now, where, 2, |
| 3941 | &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); |
| 3942 | else |
| 3943 | fix_new_exp (frag_now, where, 2, |
| 3944 | &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); |
| 3945 | } |
| 3946 | } |
| 3947 | |
| 3948 | where += 2; |
| 3949 | frag += 2; |
| 3950 | } |
| 3951 | |
| 3952 | if (op2.mode == OP_EXP) |
| 3953 | { |
| 3954 | if (op2.exp.X_op == O_constant) |
| 3955 | { |
| 3956 | bfd_putl16 (op2.exp.X_add_number & 0xffff, frag); |
| 3957 | } |
| 3958 | else |
| 3959 | { |
| 3960 | bfd_putl16 ((bfd_vma) ZEROS, frag); |
| 3961 | |
| 3962 | if (!extended_op) |
| 3963 | { |
| 3964 | if (op2.reg) /* Not PC relative. */ |
| 3965 | fix_new_exp (frag_now, where, 2, |
| 3966 | &(op2.exp), FALSE, CHECK_RELOC_MSP430 (op2)); |
| 3967 | else |
| 3968 | fix_new_exp (frag_now, where, 2, |
| 3969 | &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL); |
| 3970 | } |
| 3971 | } |
| 3972 | } |
| 3973 | |
| 3974 | dwarf2_emit_insn (insn_length); |
| 3975 | |
| 3976 | /* If the PC is the destination... */ |
| 3977 | if (op2.am == 0 && op2.reg == 0 |
| 3978 | /* ... but the opcode does not alter the destination. */ |
| 3979 | && (is_opcode ("cmp") || is_opcode ("bit") || is_opcode ("cmpx"))) |
| 3980 | check_for_nop |= NOP_CHECK_CPU12; |
| 3981 | break; |
| 3982 | |
| 3983 | case 2: /* Single-operand mostly instr. */ |
| 3984 | if (opcode->insn_opnumb == 0) |
| 3985 | { |
| 3986 | /* reti instruction. */ |
| 3987 | insn_length += 2; |
| 3988 | frag = frag_more (2); |
| 3989 | bfd_putl16 ((bfd_vma) bin, frag); |
| 3990 | dwarf2_emit_insn (insn_length); |
| 3991 | break; |
| 3992 | } |
| 3993 | |
| 3994 | line = extract_operand (line, l1, sizeof (l1)); |
| 3995 | res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, |
| 3996 | &imm_op, extended_op, TRUE); |
| 3997 | if (res) |
| 3998 | break; /* Error in operand. */ |
| 3999 | |
| 4000 | if (target_is_430xv2 () |
| 4001 | && op1.mode == OP_REG |
| 4002 | && op1.reg == 0 |
| 4003 | && (is_opcode ("rrax") |
| 4004 | || is_opcode ("rrcx") |
| 4005 | || is_opcode ("rra") |
| 4006 | || is_opcode ("rrc"))) |
| 4007 | { |
| 4008 | as_bad (_("%s: attempt to rotate the PC register"), opcode->name); |
| 4009 | break; |
| 4010 | } |
| 4011 | |
| 4012 | /* If the status register is the destination... */ |
| 4013 | if (op1.am == 0 && op1.reg == 2 |
| 4014 | /* ... and the opcode alters the SR. */ |
| 4015 | && (is_opcode ("rra") || is_opcode ("rrc") || is_opcode ("sxt"))) |
| 4016 | { |
| 4017 | if (silicon_errata_fix & SILICON_ERRATA_CPU13) |
| 4018 | as_bad (_("CPU13: SR is destination of SR altering instruction")); |
| 4019 | else if (silicon_errata_warn & SILICON_ERRATA_CPU13) |
| 4020 | as_warn (_("CPU13: SR is destination of SR altering instruction")); |
| 4021 | } |
| 4022 | |
| 4023 | insn_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2); |
| 4024 | frag = frag_more (insn_length); |
| 4025 | where = frag - frag_now->fr_literal; |
| 4026 | |
| 4027 | if (extended_op) |
| 4028 | { |
| 4029 | if (is_opcode ("swpbx") || is_opcode ("sxtx")) |
| 4030 | { |
| 4031 | /* These two instructions use a special |
| 4032 | encoding of the A/L and B/W bits. */ |
| 4033 | bin &= ~ BYTE_OPERATION; |
| 4034 | |
| 4035 | if (byte_op) |
| 4036 | { |
| 4037 | as_bad (_("%s instruction does not accept a .b suffix"), |
| 4038 | opcode->name); |
| 4039 | break; |
| 4040 | } |
| 4041 | else if (! addr_op) |
| 4042 | extended |= BYTE_OPERATION; |
| 4043 | } |
| 4044 | else if (! addr_op) |
| 4045 | extended |= BYTE_OPERATION; |
| 4046 | |
| 4047 | if (is_opcode ("rrux")) |
| 4048 | extended |= IGNORE_CARRY_BIT; |
| 4049 | |
| 4050 | if (op1.ol != 0 && ((extended & 0xf) != 0)) |
| 4051 | { |
| 4052 | as_bad (_("repeat instruction used with non-register mode instruction")); |
| 4053 | extended &= ~ 0xf; |
| 4054 | } |
| 4055 | |
| 4056 | if (op1.mode == OP_EXP) |
| 4057 | { |
| 4058 | if (op1.exp.X_op == O_constant) |
| 4059 | extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7; |
| 4060 | |
| 4061 | else if (op1.reg || op1.am == 3) /* Not PC relative. */ |
| 4062 | fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, |
| 4063 | BFD_RELOC_MSP430X_ABS20_EXT_SRC); |
| 4064 | else |
| 4065 | fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE, |
| 4066 | BFD_RELOC_MSP430X_PCR20_EXT_SRC); |
| 4067 | } |
| 4068 | |
| 4069 | /* Emit the extension word. */ |
| 4070 | bfd_putl16 (extended, frag); |
| 4071 | frag += 2; |
| 4072 | where += 2; |
| 4073 | } |
| 4074 | |
| 4075 | bin |= op1.reg | (op1.am << 4); |
| 4076 | bfd_putl16 ((bfd_vma) bin, frag); |
| 4077 | frag += 2; |
| 4078 | where += 2; |
| 4079 | |
| 4080 | if (op1.mode == OP_EXP) |
| 4081 | { |
| 4082 | if (op1.exp.X_op == O_constant) |
| 4083 | { |
| 4084 | bfd_putl16 (op1.exp.X_add_number & 0xffff, frag); |
| 4085 | } |
| 4086 | else |
| 4087 | { |
| 4088 | bfd_putl16 ((bfd_vma) ZEROS, frag); |
| 4089 | |
| 4090 | if (!extended_op) |
| 4091 | { |
| 4092 | if (op1.reg || op1.am == 3) /* Not PC relative. */ |
| 4093 | fix_new_exp (frag_now, where, 2, |
| 4094 | &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1)); |
| 4095 | else |
| 4096 | fix_new_exp (frag_now, where, 2, |
| 4097 | &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL); |
| 4098 | } |
| 4099 | } |
| 4100 | } |
| 4101 | |
| 4102 | dwarf2_emit_insn (insn_length); |
| 4103 | break; |
| 4104 | |
| 4105 | case 3: /* Conditional jumps instructions. */ |
| 4106 | line = extract_operand (line, l1, sizeof (l1)); |
| 4107 | /* l1 is a label. */ |
| 4108 | if (l1[0]) |
| 4109 | { |
| 4110 | char *m = l1; |
| 4111 | expressionS exp; |
| 4112 | |
| 4113 | if (*m == '$') |
| 4114 | m++; |
| 4115 | |
| 4116 | end = parse_exp (m, &exp); |
| 4117 | if (end != NULL && *end != 0) |
| 4118 | { |
| 4119 | as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); |
| 4120 | break; |
| 4121 | } |
| 4122 | |
| 4123 | /* In order to handle something like: |
| 4124 | |
| 4125 | and #0x8000, r5 |
| 4126 | tst r5 |
| 4127 | jz 4 ; skip next 4 bytes |
| 4128 | inv r5 |
| 4129 | inc r5 |
| 4130 | nop ; will jump here if r5 positive or zero |
| 4131 | |
| 4132 | jCOND -n ;assumes jump n bytes backward: |
| 4133 | |
| 4134 | mov r5,r6 |
| 4135 | jmp -2 |
| 4136 | |
| 4137 | is equal to: |
| 4138 | lab: |
| 4139 | mov r5,r6 |
| 4140 | jmp lab |
| 4141 | |
| 4142 | jCOND $n ; jump from PC in either direction. */ |
| 4143 | |
| 4144 | if (exp.X_op == O_constant) |
| 4145 | { |
| 4146 | int x = exp.X_add_number; |
| 4147 | |
| 4148 | if (x & 1) |
| 4149 | { |
| 4150 | as_warn (_("Even number required. Rounded to %d"), x + 1); |
| 4151 | x++; |
| 4152 | } |
| 4153 | |
| 4154 | if ((*l1 == '$' && x > 0) || x < 0) |
| 4155 | x -= 2; |
| 4156 | |
| 4157 | x >>= 1; |
| 4158 | |
| 4159 | if (x > 512 || x < -511) |
| 4160 | { |
| 4161 | as_bad (_("Wrong displacement %d"), x << 1); |
| 4162 | break; |
| 4163 | } |
| 4164 | |
| 4165 | insn_length += 2; |
| 4166 | frag = frag_more (2); /* Instr size is 1 word. */ |
| 4167 | |
| 4168 | bin |= x & 0x3ff; |
| 4169 | bfd_putl16 ((bfd_vma) bin, frag); |
| 4170 | } |
| 4171 | else if (exp.X_op == O_symbol && *l1 != '$') |
| 4172 | { |
| 4173 | insn_length += 2; |
| 4174 | frag = frag_more (2); /* Instr size is 1 word. */ |
| 4175 | where = frag - frag_now->fr_literal; |
| 4176 | fix_new_exp (frag_now, where, 2, |
| 4177 | &exp, TRUE, BFD_RELOC_MSP430_10_PCREL); |
| 4178 | |
| 4179 | bfd_putl16 ((bfd_vma) bin, frag); |
| 4180 | } |
| 4181 | else if (*l1 == '$') |
| 4182 | { |
| 4183 | as_bad (_("instruction requires label sans '$'")); |
| 4184 | } |
| 4185 | else |
| 4186 | as_bad (_ |
| 4187 | ("instruction requires label or value in range -511:512")); |
| 4188 | dwarf2_emit_insn (insn_length); |
| 4189 | break; |
| 4190 | } |
| 4191 | else |
| 4192 | { |
| 4193 | as_bad (_("instruction requires label")); |
| 4194 | break; |
| 4195 | } |
| 4196 | break; |
| 4197 | |
| 4198 | case 4: /* Extended jumps. */ |
| 4199 | if (!msp430_enable_polys) |
| 4200 | { |
| 4201 | as_bad (_("polymorphs are not enabled. Use -mP option to enable.")); |
| 4202 | break; |
| 4203 | } |
| 4204 | |
| 4205 | line = extract_operand (line, l1, sizeof (l1)); |
| 4206 | if (l1[0]) |
| 4207 | { |
| 4208 | char *m = l1; |
| 4209 | expressionS exp; |
| 4210 | |
| 4211 | /* Ignore absolute addressing. make it PC relative anyway. */ |
| 4212 | if (*m == '#' || *m == '$') |
| 4213 | m++; |
| 4214 | |
| 4215 | end = parse_exp (m, & exp); |
| 4216 | if (end != NULL && *end != 0) |
| 4217 | { |
| 4218 | as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); |
| 4219 | break; |
| 4220 | } |
| 4221 | if (exp.X_op == O_symbol) |
| 4222 | { |
| 4223 | /* Relaxation required. */ |
| 4224 | struct rcodes_s rc = msp430_rcodes[opcode->insn_opnumb]; |
| 4225 | |
| 4226 | if (target_is_430x ()) |
| 4227 | rc = msp430x_rcodes[opcode->insn_opnumb]; |
| 4228 | |
| 4229 | /* The parameter to dwarf2_emit_insn is actually the offset to |
| 4230 | the start of the insn from the fix piece of instruction that |
| 4231 | was emitted. Since next fragments may have variable size we |
| 4232 | tie debug info to the beginning of the instruction. */ |
| 4233 | insn_length += 8; |
| 4234 | frag = frag_more (8); |
| 4235 | dwarf2_emit_insn (0); |
| 4236 | bfd_putl16 ((bfd_vma) rc.sop, frag); |
| 4237 | frag = frag_variant (rs_machine_dependent, 8, 2, |
| 4238 | /* Wild guess. */ |
| 4239 | ENCODE_RELAX (rc.lpos, STATE_BITS10), |
| 4240 | exp.X_add_symbol, |
| 4241 | 0, /* Offset is zero if jump dist less than 1K. */ |
| 4242 | (char *) frag); |
| 4243 | break; |
| 4244 | } |
| 4245 | } |
| 4246 | |
| 4247 | as_bad (_("instruction requires label")); |
| 4248 | break; |
| 4249 | |
| 4250 | case 5: /* Emulated extended branches. */ |
| 4251 | if (!msp430_enable_polys) |
| 4252 | { |
| 4253 | as_bad (_("polymorphs are not enabled. Use -mP option to enable.")); |
| 4254 | break; |
| 4255 | } |
| 4256 | line = extract_operand (line, l1, sizeof (l1)); |
| 4257 | if (l1[0]) |
| 4258 | { |
| 4259 | char * m = l1; |
| 4260 | expressionS exp; |
| 4261 | |
| 4262 | /* Ignore absolute addressing. make it PC relative anyway. */ |
| 4263 | if (*m == '#' || *m == '$') |
| 4264 | m++; |
| 4265 | |
| 4266 | end = parse_exp (m, & exp); |
| 4267 | if (end != NULL && *end != 0) |
| 4268 | { |
| 4269 | as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1); |
| 4270 | break; |
| 4271 | } |
| 4272 | if (exp.X_op == O_symbol) |
| 4273 | { |
| 4274 | /* Relaxation required. */ |
| 4275 | struct hcodes_s hc = msp430_hcodes[opcode->insn_opnumb]; |
| 4276 | |
| 4277 | if (target_is_430x ()) |
| 4278 | hc = msp430x_hcodes[opcode->insn_opnumb]; |
| 4279 | |
| 4280 | insn_length += 8; |
| 4281 | frag = frag_more (8); |
| 4282 | dwarf2_emit_insn (0); |
| 4283 | bfd_putl16 ((bfd_vma) hc.op0, frag); |
| 4284 | bfd_putl16 ((bfd_vma) hc.op1, frag+2); |
| 4285 | |
| 4286 | frag = frag_variant (rs_machine_dependent, 8, 2, |
| 4287 | ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10), /* Wild guess. */ |
| 4288 | exp.X_add_symbol, |
| 4289 | 0, /* Offset is zero if jump dist less than 1K. */ |
| 4290 | (char *) frag); |
| 4291 | break; |
| 4292 | } |
| 4293 | } |
| 4294 | |
| 4295 | as_bad (_("instruction requires label")); |
| 4296 | break; |
| 4297 | |
| 4298 | default: |
| 4299 | as_bad (_("Illegal instruction or not implemented opcode.")); |
| 4300 | } |
| 4301 | |
| 4302 | if (is_opcode ("nop")) |
| 4303 | { |
| 4304 | prev_insn_is_nop = TRUE; |
| 4305 | prev_insn_is_dint = FALSE; |
| 4306 | prev_insn_is_eint = FALSE; |
| 4307 | } |
| 4308 | else if (this_insn_is_dint || is_dint (opcode->name, bin)) |
| 4309 | { |
| 4310 | prev_insn_is_dint = TRUE; |
| 4311 | prev_insn_is_eint = FALSE; |
| 4312 | prev_insn_is_nop = FALSE; |
| 4313 | check_for_nop |= NOP_CHECK_INTERRUPT; |
| 4314 | } |
| 4315 | /* NOP is not needed after EINT for 430 ISA. */ |
| 4316 | else if (target_is_430x () && (this_insn_is_eint || is_eint (opcode->name, bin))) |
| 4317 | { |
| 4318 | prev_insn_is_eint = TRUE; |
| 4319 | prev_insn_is_nop = FALSE; |
| 4320 | prev_insn_is_dint = FALSE; |
| 4321 | check_for_nop |= NOP_CHECK_INTERRUPT; |
| 4322 | } |
| 4323 | else |
| 4324 | { |
| 4325 | prev_insn_is_nop = FALSE; |
| 4326 | prev_insn_is_dint = FALSE; |
| 4327 | prev_insn_is_eint = FALSE; |
| 4328 | } |
| 4329 | |
| 4330 | input_line_pointer = line; |
| 4331 | return 0; |
| 4332 | } |
| 4333 | |
| 4334 | void |
| 4335 | md_assemble (char * str) |
| 4336 | { |
| 4337 | struct msp430_opcode_s * opcode; |
| 4338 | char cmd[32]; |
| 4339 | unsigned int i = 0; |
| 4340 | |
| 4341 | str = skip_space (str); /* Skip leading spaces. */ |
| 4342 | str = extract_cmd (str, cmd, sizeof (cmd) - 1); |
| 4343 | |
| 4344 | while (cmd[i]) |
| 4345 | { |
| 4346 | char a = TOLOWER (cmd[i]); |
| 4347 | cmd[i] = a; |
| 4348 | i++; |
| 4349 | } |
| 4350 | |
| 4351 | if (!cmd[0]) |
| 4352 | { |
| 4353 | as_bad (_("can't find opcode")); |
| 4354 | return; |
| 4355 | } |
| 4356 | |
| 4357 | opcode = (struct msp430_opcode_s *) str_hash_find (msp430_hash, cmd); |
| 4358 | |
| 4359 | if (opcode == NULL) |
| 4360 | { |
| 4361 | as_bad (_("unknown opcode `%s'"), cmd); |
| 4362 | return; |
| 4363 | } |
| 4364 | |
| 4365 | { |
| 4366 | char *__t = input_line_pointer; |
| 4367 | |
| 4368 | msp430_operands (opcode, str); |
| 4369 | input_line_pointer = __t; |
| 4370 | } |
| 4371 | } |
| 4372 | |
| 4373 | /* GAS will call this function for each section at the end of the assembly, |
| 4374 | to permit the CPU backend to adjust the alignment of a section. */ |
| 4375 | |
| 4376 | valueT |
| 4377 | md_section_align (asection * seg, valueT addr) |
| 4378 | { |
| 4379 | int align = bfd_section_alignment (seg); |
| 4380 | |
| 4381 | return ((addr + (1 << align) - 1) & -(1 << align)); |
| 4382 | } |
| 4383 | |
| 4384 | /* If you define this macro, it should return the offset between the |
| 4385 | address of a PC relative fixup and the position from which the PC |
| 4386 | relative adjustment should be made. On many processors, the base |
| 4387 | of a PC relative instruction is the next instruction, so this |
| 4388 | macro would return the length of an instruction. */ |
| 4389 | |
| 4390 | long |
| 4391 | md_pcrel_from_section (fixS * fixp, segT sec) |
| 4392 | { |
| 4393 | if (fixp->fx_addsy != (symbolS *) NULL |
| 4394 | && (!S_IS_DEFINED (fixp->fx_addsy) |
| 4395 | || (S_GET_SEGMENT (fixp->fx_addsy) != sec))) |
| 4396 | return 0; |
| 4397 | |
| 4398 | return fixp->fx_frag->fr_address + fixp->fx_where; |
| 4399 | } |
| 4400 | |
| 4401 | /* Addition to the standard TC_FORCE_RELOCATION_LOCAL. |
| 4402 | Now it handles the situation when relocations |
| 4403 | have to be passed to linker. */ |
| 4404 | int |
| 4405 | msp430_force_relocation_local (fixS *fixp) |
| 4406 | { |
| 4407 | if (fixp->fx_r_type == BFD_RELOC_MSP430_10_PCREL) |
| 4408 | return 1; |
| 4409 | if (fixp->fx_pcrel) |
| 4410 | return 1; |
| 4411 | if (msp430_enable_polys |
| 4412 | && !msp430_enable_relax) |
| 4413 | return 1; |
| 4414 | |
| 4415 | return 0; |
| 4416 | } |
| 4417 | |
| 4418 | |
| 4419 | /* GAS will call this for each fixup. It should store the correct |
| 4420 | value in the object file. */ |
| 4421 | void |
| 4422 | md_apply_fix (fixS * fixp, valueT * valuep, segT seg) |
| 4423 | { |
| 4424 | unsigned char * where; |
| 4425 | unsigned long insn; |
| 4426 | long value; |
| 4427 | |
| 4428 | if (fixp->fx_addsy == (symbolS *) NULL) |
| 4429 | { |
| 4430 | value = *valuep; |
| 4431 | fixp->fx_done = 1; |
| 4432 | } |
| 4433 | else if (fixp->fx_pcrel) |
| 4434 | { |
| 4435 | segT s = S_GET_SEGMENT (fixp->fx_addsy); |
| 4436 | |
| 4437 | if (fixp->fx_addsy && (s == seg || s == absolute_section)) |
| 4438 | { |
| 4439 | /* FIXME: We can appear here only in case if we perform a pc |
| 4440 | relative jump to the label which is i) global, ii) locally |
| 4441 | defined or this is a jump to an absolute symbol. |
| 4442 | If this is an absolute symbol -- everything is OK. |
| 4443 | If this is a global label, we've got a symbol value defined |
| 4444 | twice: |
| 4445 | 1. S_GET_VALUE (fixp->fx_addsy) will contain a symbol offset |
| 4446 | from this section start |
| 4447 | 2. *valuep will contain the real offset from jump insn to the |
| 4448 | label |
| 4449 | So, the result of S_GET_VALUE (fixp->fx_addsy) + (* valuep); |
| 4450 | will be incorrect. Therefore remove s_get_value. */ |
| 4451 | value = /* S_GET_VALUE (fixp->fx_addsy) + */ * valuep; |
| 4452 | fixp->fx_done = 1; |
| 4453 | } |
| 4454 | else |
| 4455 | value = *valuep; |
| 4456 | } |
| 4457 | else |
| 4458 | { |
| 4459 | value = fixp->fx_offset; |
| 4460 | |
| 4461 | if (fixp->fx_subsy != (symbolS *) NULL) |
| 4462 | { |
| 4463 | if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) |
| 4464 | { |
| 4465 | value -= S_GET_VALUE (fixp->fx_subsy); |
| 4466 | fixp->fx_done = 1; |
| 4467 | } |
| 4468 | } |
| 4469 | } |
| 4470 | |
| 4471 | fixp->fx_no_overflow = 1; |
| 4472 | |
| 4473 | /* If polymorphs are enabled and relax disabled. |
| 4474 | do not kill any relocs and pass them to linker. */ |
| 4475 | if (msp430_enable_polys |
| 4476 | && !msp430_enable_relax) |
| 4477 | { |
| 4478 | if (!fixp->fx_addsy |
| 4479 | || S_GET_SEGMENT (fixp->fx_addsy) == absolute_section) |
| 4480 | fixp->fx_done = 1; /* It is ok to kill 'abs' reloc. */ |
| 4481 | else |
| 4482 | fixp->fx_done = 0; |
| 4483 | } |
| 4484 | |
| 4485 | if (fixp->fx_done) |
| 4486 | { |
| 4487 | /* Fetch the instruction, insert the fully resolved operand |
| 4488 | value, and stuff the instruction back again. */ |
| 4489 | where = (unsigned char *) fixp->fx_frag->fr_literal + fixp->fx_where; |
| 4490 | |
| 4491 | insn = bfd_getl16 (where); |
| 4492 | |
| 4493 | switch (fixp->fx_r_type) |
| 4494 | { |
| 4495 | case BFD_RELOC_MSP430_10_PCREL: |
| 4496 | if (value & 1) |
| 4497 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 4498 | _("odd address operand: %ld"), value); |
| 4499 | |
| 4500 | /* Jumps are in words. */ |
| 4501 | value >>= 1; |
| 4502 | --value; /* Correct PC. */ |
| 4503 | |
| 4504 | if (value < -512 || value > 511) |
| 4505 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 4506 | _("operand out of range: %ld"), value); |
| 4507 | |
| 4508 | value &= 0x3ff; /* get rid of extended sign */ |
| 4509 | bfd_putl16 ((bfd_vma) (value | insn), where); |
| 4510 | break; |
| 4511 | |
| 4512 | case BFD_RELOC_MSP430X_PCR16: |
| 4513 | case BFD_RELOC_MSP430_RL_PCREL: |
| 4514 | case BFD_RELOC_MSP430_16_PCREL: |
| 4515 | if (value & 1) |
| 4516 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 4517 | _("odd address operand: %ld"), value); |
| 4518 | /* Fall through. */ |
| 4519 | |
| 4520 | case BFD_RELOC_MSP430_16_PCREL_BYTE: |
| 4521 | /* Nothing to be corrected here. */ |
| 4522 | if (value < -32768 || value > 65536) |
| 4523 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 4524 | _("operand out of range: %ld"), value); |
| 4525 | /* Fall through. */ |
| 4526 | |
| 4527 | case BFD_RELOC_MSP430X_ABS16: |
| 4528 | case BFD_RELOC_MSP430_16: |
| 4529 | case BFD_RELOC_16: |
| 4530 | case BFD_RELOC_MSP430_16_BYTE: |
| 4531 | value &= 0xffff; /* Get rid of extended sign. */ |
| 4532 | bfd_putl16 ((bfd_vma) value, where); |
| 4533 | break; |
| 4534 | |
| 4535 | case BFD_RELOC_MSP430_ABS_HI16: |
| 4536 | value >>= 16; |
| 4537 | value &= 0xffff; /* Get rid of extended sign. */ |
| 4538 | bfd_putl16 ((bfd_vma) value, where); |
| 4539 | break; |
| 4540 | |
| 4541 | case BFD_RELOC_32: |
| 4542 | bfd_putl16 ((bfd_vma) value, where); |
| 4543 | break; |
| 4544 | |
| 4545 | case BFD_RELOC_MSP430_ABS8: |
| 4546 | case BFD_RELOC_8: |
| 4547 | bfd_put_8 (NULL, (bfd_vma) value, where); |
| 4548 | break; |
| 4549 | |
| 4550 | case BFD_RELOC_MSP430X_ABS20_EXT_SRC: |
| 4551 | case BFD_RELOC_MSP430X_PCR20_EXT_SRC: |
| 4552 | bfd_putl16 ((bfd_vma) (value & 0xffff), where + 4); |
| 4553 | value >>= 16; |
| 4554 | bfd_putl16 ((bfd_vma) (((value & 0xf) << 7) | insn), where); |
| 4555 | break; |
| 4556 | |
| 4557 | case BFD_RELOC_MSP430X_ABS20_ADR_SRC: |
| 4558 | bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); |
| 4559 | value >>= 16; |
| 4560 | bfd_putl16 ((bfd_vma) (((value & 0xf) << 8) | insn), where); |
| 4561 | break; |
| 4562 | |
| 4563 | case BFD_RELOC_MSP430X_ABS20_EXT_ODST: |
| 4564 | bfd_putl16 ((bfd_vma) (value & 0xffff), where + 6); |
| 4565 | value >>= 16; |
| 4566 | bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); |
| 4567 | break; |
| 4568 | |
| 4569 | case BFD_RELOC_MSP430X_PCR20_CALL: |
| 4570 | bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); |
| 4571 | value >>= 16; |
| 4572 | bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); |
| 4573 | break; |
| 4574 | |
| 4575 | case BFD_RELOC_MSP430X_ABS20_EXT_DST: |
| 4576 | case BFD_RELOC_MSP430X_PCR20_EXT_DST: |
| 4577 | bfd_putl16 ((bfd_vma) (value & 0xffff), where + 4); |
| 4578 | value >>= 16; |
| 4579 | bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); |
| 4580 | break; |
| 4581 | |
| 4582 | case BFD_RELOC_MSP430X_PCR20_EXT_ODST: |
| 4583 | bfd_putl16 ((bfd_vma) (value & 0xffff), where + 6); |
| 4584 | value >>= 16; |
| 4585 | bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); |
| 4586 | break; |
| 4587 | |
| 4588 | case BFD_RELOC_MSP430X_ABS20_ADR_DST: |
| 4589 | bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); |
| 4590 | value >>= 16; |
| 4591 | bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where); |
| 4592 | break; |
| 4593 | |
| 4594 | default: |
| 4595 | as_fatal (_("line %d: unknown relocation type: 0x%x"), |
| 4596 | fixp->fx_line, fixp->fx_r_type); |
| 4597 | break; |
| 4598 | } |
| 4599 | } |
| 4600 | else |
| 4601 | { |
| 4602 | fixp->fx_addnumber = value; |
| 4603 | } |
| 4604 | } |
| 4605 | |
| 4606 | static bfd_boolean |
| 4607 | S_IS_GAS_LOCAL (symbolS * s) |
| 4608 | { |
| 4609 | const char * name; |
| 4610 | unsigned int len; |
| 4611 | |
| 4612 | if (s == NULL) |
| 4613 | return FALSE; |
| 4614 | name = S_GET_NAME (s); |
| 4615 | len = strlen (name) - 1; |
| 4616 | |
| 4617 | return name[len] == 1 || name[len] == 2; |
| 4618 | } |
| 4619 | |
| 4620 | /* GAS will call this to generate a reloc, passing the resulting reloc |
| 4621 | to `bfd_install_relocation'. This currently works poorly, as |
| 4622 | `bfd_install_relocation' often does the wrong thing, and instances of |
| 4623 | `tc_gen_reloc' have been written to work around the problems, which |
| 4624 | in turns makes it difficult to fix `bfd_install_relocation'. */ |
| 4625 | |
| 4626 | /* If while processing a fixup, a reloc really needs to be created |
| 4627 | then it is done here. */ |
| 4628 | |
| 4629 | arelent ** |
| 4630 | tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp) |
| 4631 | { |
| 4632 | static arelent * no_relocs = NULL; |
| 4633 | static arelent * relocs[MAX_RELOC_EXPANSION + 1]; |
| 4634 | arelent *reloc; |
| 4635 | |
| 4636 | reloc = XNEW (arelent); |
| 4637 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
| 4638 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
| 4639 | |
| 4640 | if (reloc->howto == (reloc_howto_type *) NULL) |
| 4641 | { |
| 4642 | as_bad_where (fixp->fx_file, fixp->fx_line, |
| 4643 | _("reloc %d not supported by object file format"), |
| 4644 | (int) fixp->fx_r_type); |
| 4645 | free (reloc); |
| 4646 | return & no_relocs; |
| 4647 | } |
| 4648 | |
| 4649 | relocs[0] = reloc; |
| 4650 | relocs[1] = NULL; |
| 4651 | |
| 4652 | if (fixp->fx_subsy |
| 4653 | && S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) |
| 4654 | { |
| 4655 | fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy); |
| 4656 | fixp->fx_subsy = NULL; |
| 4657 | } |
| 4658 | |
| 4659 | if (fixp->fx_addsy && fixp->fx_subsy) |
| 4660 | { |
| 4661 | asection *asec, *ssec; |
| 4662 | |
| 4663 | asec = S_GET_SEGMENT (fixp->fx_addsy); |
| 4664 | ssec = S_GET_SEGMENT (fixp->fx_subsy); |
| 4665 | |
| 4666 | /* If we have a difference between two different, non-absolute symbols |
| 4667 | we must generate two relocs (one for each symbol) and allow the |
| 4668 | linker to resolve them - relaxation may change the distances between |
| 4669 | symbols, even local symbols defined in the same section. |
| 4670 | |
| 4671 | Unfortunately we cannot do this with assembler generated local labels |
| 4672 | because there can be multiple incarnations of the same label, with |
| 4673 | exactly the same name, in any given section and the linker will have |
| 4674 | no way to identify the correct one. Instead we just have to hope |
| 4675 | that no relaxation will occur between the local label and the other |
| 4676 | symbol in the expression. |
| 4677 | |
| 4678 | Similarly we have to compute differences between symbols in the .eh_frame |
| 4679 | section as the linker is not smart enough to apply relocations there |
| 4680 | before attempting to process it. */ |
| 4681 | if ((ssec != absolute_section || asec != absolute_section) |
| 4682 | && (fixp->fx_addsy != fixp->fx_subsy) |
| 4683 | && strcmp (ssec->name, ".eh_frame") != 0 |
| 4684 | && ! S_IS_GAS_LOCAL (fixp->fx_addsy) |
| 4685 | && ! S_IS_GAS_LOCAL (fixp->fx_subsy)) |
| 4686 | { |
| 4687 | arelent * reloc2 = XNEW (arelent); |
| 4688 | |
| 4689 | relocs[0] = reloc2; |
| 4690 | relocs[1] = reloc; |
| 4691 | |
| 4692 | reloc2->address = reloc->address; |
| 4693 | reloc2->howto = bfd_reloc_type_lookup (stdoutput, |
| 4694 | BFD_RELOC_MSP430_SYM_DIFF); |
| 4695 | reloc2->addend = - S_GET_VALUE (fixp->fx_subsy); |
| 4696 | |
| 4697 | if (ssec == absolute_section) |
| 4698 | reloc2->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 4699 | else |
| 4700 | { |
| 4701 | reloc2->sym_ptr_ptr = XNEW (asymbol *); |
| 4702 | *reloc2->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); |
| 4703 | } |
| 4704 | |
| 4705 | reloc->addend = fixp->fx_offset; |
| 4706 | if (asec == absolute_section) |
| 4707 | { |
| 4708 | reloc->addend += S_GET_VALUE (fixp->fx_addsy); |
| 4709 | reloc->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 4710 | } |
| 4711 | else |
| 4712 | { |
| 4713 | reloc->sym_ptr_ptr = XNEW (asymbol *); |
| 4714 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 4715 | } |
| 4716 | |
| 4717 | fixp->fx_pcrel = 0; |
| 4718 | fixp->fx_done = 1; |
| 4719 | return relocs; |
| 4720 | } |
| 4721 | else |
| 4722 | { |
| 4723 | char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal; |
| 4724 | |
| 4725 | reloc->addend = (S_GET_VALUE (fixp->fx_addsy) |
| 4726 | - S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset); |
| 4727 | |
| 4728 | switch (fixp->fx_r_type) |
| 4729 | { |
| 4730 | case BFD_RELOC_8: |
| 4731 | md_number_to_chars (fixpos, reloc->addend, 1); |
| 4732 | break; |
| 4733 | |
| 4734 | case BFD_RELOC_16: |
| 4735 | md_number_to_chars (fixpos, reloc->addend, 2); |
| 4736 | break; |
| 4737 | |
| 4738 | case BFD_RELOC_24: |
| 4739 | md_number_to_chars (fixpos, reloc->addend, 3); |
| 4740 | break; |
| 4741 | |
| 4742 | case BFD_RELOC_32: |
| 4743 | md_number_to_chars (fixpos, reloc->addend, 4); |
| 4744 | break; |
| 4745 | |
| 4746 | default: |
| 4747 | reloc->sym_ptr_ptr |
| 4748 | = (asymbol **) bfd_abs_section_ptr->symbol_ptr_ptr; |
| 4749 | return relocs; |
| 4750 | } |
| 4751 | |
| 4752 | free (reloc); |
| 4753 | return & no_relocs; |
| 4754 | } |
| 4755 | } |
| 4756 | else |
| 4757 | { |
| 4758 | #if 0 |
| 4759 | if (fixp->fx_r_type == BFD_RELOC_MSP430X_ABS16 |
| 4760 | && S_GET_SEGMENT (fixp->fx_addsy) == absolute_section) |
| 4761 | { |
| 4762 | bfd_vma amount = S_GET_VALUE (fixp->fx_addsy); |
| 4763 | char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal; |
| 4764 | |
| 4765 | md_number_to_chars (fixpos, amount, 2); |
| 4766 | free (reloc); |
| 4767 | return & no_relocs; |
| 4768 | } |
| 4769 | #endif |
| 4770 | reloc->sym_ptr_ptr = XNEW (asymbol *); |
| 4771 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
| 4772 | reloc->addend = fixp->fx_offset; |
| 4773 | |
| 4774 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
| 4775 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) |
| 4776 | reloc->address = fixp->fx_offset; |
| 4777 | } |
| 4778 | |
| 4779 | return relocs; |
| 4780 | } |
| 4781 | |
| 4782 | int |
| 4783 | md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, |
| 4784 | asection * segment_type ATTRIBUTE_UNUSED) |
| 4785 | { |
| 4786 | if (fragP->fr_symbol && S_GET_SEGMENT (fragP->fr_symbol) == segment_type) |
| 4787 | { |
| 4788 | /* This is a jump -> pcrel mode. Nothing to do much here. |
| 4789 | Return value == 2. */ |
| 4790 | fragP->fr_subtype = |
| 4791 | ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_BITS10); |
| 4792 | } |
| 4793 | else if (fragP->fr_symbol) |
| 4794 | { |
| 4795 | /* It's got a segment, but it's not ours. Even if fr_symbol is in |
| 4796 | an absolute segment, we don't know a displacement until we link |
| 4797 | object files. So it will always be long. This also applies to |
| 4798 | labels in a subsegment of current. Liker may relax it to short |
| 4799 | jump later. Return value == 8. */ |
| 4800 | fragP->fr_subtype = |
| 4801 | ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_WORD); |
| 4802 | } |
| 4803 | else |
| 4804 | { |
| 4805 | /* We know the abs value. may be it is a jump to fixed address. |
| 4806 | Impossible in our case, cause all constants already handled. */ |
| 4807 | fragP->fr_subtype = |
| 4808 | ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_UNDEF); |
| 4809 | } |
| 4810 | |
| 4811 | return md_relax_table[fragP->fr_subtype].rlx_length; |
| 4812 | } |
| 4813 | |
| 4814 | void |
| 4815 | md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED, |
| 4816 | asection * sec ATTRIBUTE_UNUSED, |
| 4817 | fragS * fragP) |
| 4818 | { |
| 4819 | char * where = 0; |
| 4820 | int rela = -1; |
| 4821 | int i; |
| 4822 | struct rcodes_s * cc = NULL; |
| 4823 | struct hcodes_s * hc = NULL; |
| 4824 | |
| 4825 | switch (fragP->fr_subtype) |
| 4826 | { |
| 4827 | case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_BITS10): |
| 4828 | case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_BITS10): |
| 4829 | case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_BITS10): |
| 4830 | /* We do not have to convert anything here. |
| 4831 | Just apply a fix. */ |
| 4832 | rela = BFD_RELOC_MSP430_10_PCREL; |
| 4833 | break; |
| 4834 | |
| 4835 | case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_WORD): |
| 4836 | case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_UNDEF): |
| 4837 | /* Convert uncond branch jmp lab -> br lab. */ |
| 4838 | if (target_is_430x ()) |
| 4839 | cc = msp430x_rcodes + 7; |
| 4840 | else |
| 4841 | cc = msp430_rcodes + 7; |
| 4842 | where = fragP->fr_literal + fragP->fr_fix; |
| 4843 | bfd_putl16 (cc->lop0, where); |
| 4844 | rela = BFD_RELOC_MSP430_RL_PCREL; |
| 4845 | fragP->fr_fix += 2; |
| 4846 | break; |
| 4847 | |
| 4848 | case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_WORD): |
| 4849 | case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_UNDEF): |
| 4850 | { |
| 4851 | /* Other simple branches. */ |
| 4852 | int insn = bfd_getl16 (fragP->fr_opcode); |
| 4853 | |
| 4854 | insn &= 0xffff; |
| 4855 | /* Find actual instruction. */ |
| 4856 | if (target_is_430x ()) |
| 4857 | { |
| 4858 | for (i = 0; i < 7 && !cc; i++) |
| 4859 | if (msp430x_rcodes[i].sop == insn) |
| 4860 | cc = msp430x_rcodes + i; |
| 4861 | } |
| 4862 | else |
| 4863 | { |
| 4864 | for (i = 0; i < 7 && !cc; i++) |
| 4865 | if (msp430_rcodes[i].sop == insn) |
| 4866 | cc = & msp430_rcodes[i]; |
| 4867 | } |
| 4868 | |
| 4869 | if (!cc || !cc->name) |
| 4870 | as_fatal (_("internal inconsistency problem in %s: insn %04lx"), |
| 4871 | __FUNCTION__, (long) insn); |
| 4872 | where = fragP->fr_literal + fragP->fr_fix; |
| 4873 | bfd_putl16 (cc->lop0, where); |
| 4874 | bfd_putl16 (cc->lop1, where + 2); |
| 4875 | rela = BFD_RELOC_MSP430_RL_PCREL; |
| 4876 | fragP->fr_fix += 4; |
| 4877 | } |
| 4878 | break; |
| 4879 | |
| 4880 | case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_WORD): |
| 4881 | case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_UNDEF): |
| 4882 | if (target_is_430x ()) |
| 4883 | cc = msp430x_rcodes + 6; |
| 4884 | else |
| 4885 | cc = msp430_rcodes + 6; |
| 4886 | where = fragP->fr_literal + fragP->fr_fix; |
| 4887 | bfd_putl16 (cc->lop0, where); |
| 4888 | bfd_putl16 (cc->lop1, where + 2); |
| 4889 | bfd_putl16 (cc->lop2, where + 4); |
| 4890 | rela = BFD_RELOC_MSP430_RL_PCREL; |
| 4891 | fragP->fr_fix += 6; |
| 4892 | break; |
| 4893 | |
| 4894 | case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10): |
| 4895 | { |
| 4896 | int insn = bfd_getl16 (fragP->fr_opcode + 2); |
| 4897 | |
| 4898 | insn &= 0xffff; |
| 4899 | if (target_is_430x ()) |
| 4900 | { |
| 4901 | for (i = 0; i < 4 && !hc; i++) |
| 4902 | if (msp430x_hcodes[i].op1 == insn) |
| 4903 | hc = msp430x_hcodes + i; |
| 4904 | } |
| 4905 | else |
| 4906 | { |
| 4907 | for (i = 0; i < 4 && !hc; i++) |
| 4908 | if (msp430_hcodes[i].op1 == insn) |
| 4909 | hc = &msp430_hcodes[i]; |
| 4910 | } |
| 4911 | if (!hc || !hc->name) |
| 4912 | as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"), |
| 4913 | __FUNCTION__, (long) insn); |
| 4914 | rela = BFD_RELOC_MSP430_10_PCREL; |
| 4915 | /* Apply a fix for a first label if necessary. |
| 4916 | another fix will be applied to the next word of insn anyway. */ |
| 4917 | if (hc->tlab == 2) |
| 4918 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, |
| 4919 | fragP->fr_offset, TRUE, rela); |
| 4920 | fragP->fr_fix += 2; |
| 4921 | } |
| 4922 | |
| 4923 | break; |
| 4924 | |
| 4925 | case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_WORD): |
| 4926 | case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_UNDEF): |
| 4927 | { |
| 4928 | int insn = bfd_getl16 (fragP->fr_opcode + 2); |
| 4929 | |
| 4930 | insn &= 0xffff; |
| 4931 | if (target_is_430x ()) |
| 4932 | { |
| 4933 | for (i = 0; i < 4 && !hc; i++) |
| 4934 | if (msp430x_hcodes[i].op1 == insn) |
| 4935 | hc = msp430x_hcodes + i; |
| 4936 | } |
| 4937 | else |
| 4938 | { |
| 4939 | for (i = 0; i < 4 && !hc; i++) |
| 4940 | if (msp430_hcodes[i].op1 == insn) |
| 4941 | hc = & msp430_hcodes[i]; |
| 4942 | } |
| 4943 | if (!hc || !hc->name) |
| 4944 | as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"), |
| 4945 | __FUNCTION__, (long) insn); |
| 4946 | rela = BFD_RELOC_MSP430_RL_PCREL; |
| 4947 | where = fragP->fr_literal + fragP->fr_fix; |
| 4948 | bfd_putl16 (hc->lop0, where); |
| 4949 | bfd_putl16 (hc->lop1, where + 2); |
| 4950 | bfd_putl16 (hc->lop2, where + 4); |
| 4951 | fragP->fr_fix += 6; |
| 4952 | } |
| 4953 | break; |
| 4954 | |
| 4955 | default: |
| 4956 | as_fatal (_("internal inconsistency problem in %s: %lx"), |
| 4957 | __FUNCTION__, (long) fragP->fr_subtype); |
| 4958 | break; |
| 4959 | } |
| 4960 | |
| 4961 | /* Now apply fix. */ |
| 4962 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, |
| 4963 | fragP->fr_offset, TRUE, rela); |
| 4964 | /* Just fixed 2 bytes. */ |
| 4965 | fragP->fr_fix += 2; |
| 4966 | } |
| 4967 | |
| 4968 | /* Relax fragment. Mostly stolen from hc11 and mcore |
| 4969 | which arches I think I know. */ |
| 4970 | |
| 4971 | long |
| 4972 | msp430_relax_frag (segT seg ATTRIBUTE_UNUSED, fragS * fragP, |
| 4973 | long stretch ATTRIBUTE_UNUSED) |
| 4974 | { |
| 4975 | long growth; |
| 4976 | offsetT aim = 0; |
| 4977 | symbolS *symbolP; |
| 4978 | const relax_typeS *this_type; |
| 4979 | const relax_typeS *start_type; |
| 4980 | relax_substateT next_state; |
| 4981 | relax_substateT this_state; |
| 4982 | const relax_typeS *table = md_relax_table; |
| 4983 | |
| 4984 | /* Nothing to be done if the frag has already max size. */ |
| 4985 | if (RELAX_STATE (fragP->fr_subtype) == STATE_UNDEF |
| 4986 | || RELAX_STATE (fragP->fr_subtype) == STATE_WORD) |
| 4987 | return 0; |
| 4988 | |
| 4989 | if (RELAX_STATE (fragP->fr_subtype) == STATE_BITS10) |
| 4990 | { |
| 4991 | symbolP = fragP->fr_symbol; |
| 4992 | if (symbol_resolved_p (symbolP)) |
| 4993 | as_fatal (_("internal inconsistency problem in %s: resolved symbol"), |
| 4994 | __FUNCTION__); |
| 4995 | /* We know the offset. calculate a distance. */ |
| 4996 | aim = S_GET_VALUE (symbolP) - fragP->fr_address - fragP->fr_fix; |
| 4997 | } |
| 4998 | |
| 4999 | if (!msp430_enable_relax) |
| 5000 | { |
| 5001 | /* Relaxation is not enabled. So, make all jump as long ones |
| 5002 | by setting 'aim' to quite high value. */ |
| 5003 | aim = 0x7fff; |
| 5004 | } |
| 5005 | |
| 5006 | this_state = fragP->fr_subtype; |
| 5007 | start_type = this_type = table + this_state; |
| 5008 | |
| 5009 | if (aim < 0) |
| 5010 | { |
| 5011 | /* Look backwards. */ |
| 5012 | for (next_state = this_type->rlx_more; next_state;) |
| 5013 | if (aim >= this_type->rlx_backward || !this_type->rlx_backward) |
| 5014 | next_state = 0; |
| 5015 | else |
| 5016 | { |
| 5017 | /* Grow to next state. */ |
| 5018 | this_state = next_state; |
| 5019 | this_type = table + this_state; |
| 5020 | next_state = this_type->rlx_more; |
| 5021 | } |
| 5022 | } |
| 5023 | else |
| 5024 | { |
| 5025 | /* Look forwards. */ |
| 5026 | for (next_state = this_type->rlx_more; next_state;) |
| 5027 | if (aim <= this_type->rlx_forward || !this_type->rlx_forward) |
| 5028 | next_state = 0; |
| 5029 | else |
| 5030 | { |
| 5031 | /* Grow to next state. */ |
| 5032 | this_state = next_state; |
| 5033 | this_type = table + this_state; |
| 5034 | next_state = this_type->rlx_more; |
| 5035 | } |
| 5036 | } |
| 5037 | |
| 5038 | growth = this_type->rlx_length - start_type->rlx_length; |
| 5039 | if (growth != 0) |
| 5040 | fragP->fr_subtype = this_state; |
| 5041 | return growth; |
| 5042 | } |
| 5043 | |
| 5044 | /* Return FALSE if the fixup in fixp should be left alone and not |
| 5045 | adjusted. We return FALSE here so that linker relaxation will |
| 5046 | work. */ |
| 5047 | |
| 5048 | bfd_boolean |
| 5049 | msp430_fix_adjustable (struct fix *fixp ATTRIBUTE_UNUSED) |
| 5050 | { |
| 5051 | /* If the symbol is in a non-code section then it should be OK. */ |
| 5052 | if (fixp->fx_addsy |
| 5053 | && ((S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_CODE) == 0)) |
| 5054 | return TRUE; |
| 5055 | |
| 5056 | return FALSE; |
| 5057 | } |
| 5058 | |
| 5059 | /* Scan uleb128 subtraction expressions and insert fixups for them. |
| 5060 | e.g., .uleb128 .L1 - .L0 |
| 5061 | Because relaxation may change the value of the subtraction, we |
| 5062 | must resolve them at link-time. */ |
| 5063 | |
| 5064 | static void |
| 5065 | msp430_insert_uleb128_fixes (bfd *abfd ATTRIBUTE_UNUSED, |
| 5066 | asection *sec, void *xxx ATTRIBUTE_UNUSED) |
| 5067 | { |
| 5068 | segment_info_type *seginfo = seg_info (sec); |
| 5069 | struct frag *fragP; |
| 5070 | |
| 5071 | subseg_set (sec, 0); |
| 5072 | |
| 5073 | for (fragP = seginfo->frchainP->frch_root; |
| 5074 | fragP; fragP = fragP->fr_next) |
| 5075 | { |
| 5076 | expressionS *exp, *exp_dup; |
| 5077 | |
| 5078 | if (fragP->fr_type != rs_leb128 || fragP->fr_symbol == NULL) |
| 5079 | continue; |
| 5080 | |
| 5081 | exp = symbol_get_value_expression (fragP->fr_symbol); |
| 5082 | |
| 5083 | if (exp->X_op != O_subtract) |
| 5084 | continue; |
| 5085 | |
| 5086 | /* FIXME: Skip for .sleb128. */ |
| 5087 | if (fragP->fr_subtype != 0) |
| 5088 | continue; |
| 5089 | |
| 5090 | exp_dup = xmemdup (exp, sizeof (*exp), sizeof (*exp)); |
| 5091 | exp_dup->X_op = O_symbol; |
| 5092 | exp_dup->X_op_symbol = NULL; |
| 5093 | |
| 5094 | /* Emit the SUB relocation first, since the SET relocation will write out |
| 5095 | the final value. */ |
| 5096 | exp_dup->X_add_symbol = exp->X_op_symbol; |
| 5097 | fix_new_exp (fragP, fragP->fr_fix, 0, |
| 5098 | exp_dup, 0, BFD_RELOC_MSP430_SUB_ULEB128); |
| 5099 | |
| 5100 | exp_dup->X_add_symbol = exp->X_add_symbol; |
| 5101 | /* Insert relocations to resolve the subtraction at link-time. */ |
| 5102 | fix_new_exp (fragP, fragP->fr_fix, 0, |
| 5103 | exp_dup, 0, BFD_RELOC_MSP430_SET_ULEB128); |
| 5104 | |
| 5105 | } |
| 5106 | } |
| 5107 | |
| 5108 | /* Called after all assembly has been done. */ |
| 5109 | void |
| 5110 | msp430_md_end (void) |
| 5111 | { |
| 5112 | if (check_for_nop) |
| 5113 | { |
| 5114 | if (gen_interrupt_nops) |
| 5115 | { |
| 5116 | gen_nop (); |
| 5117 | if (warn_interrupt_nops) |
| 5118 | as_warn (INSERT_NOP_AT_EOF); |
| 5119 | } |
| 5120 | else if (warn_interrupt_nops) |
| 5121 | as_warn (_(WARN_NOP_AT_EOF)); |
| 5122 | } |
| 5123 | |
| 5124 | /* Insert relocations for uleb128 directives, so the values can be recomputed |
| 5125 | at link time. */ |
| 5126 | bfd_map_over_sections (stdoutput, msp430_insert_uleb128_fixes, NULL); |
| 5127 | |
| 5128 | /* We have already emitted an error if any of the following attributes |
| 5129 | disagree with the attributes in the input assembly file. See |
| 5130 | msp430_object_attribute. */ |
| 5131 | bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_ISA, |
| 5132 | target_is_430x () ? OFBA_MSPABI_Val_ISA_MSP430X |
| 5133 | : OFBA_MSPABI_Val_ISA_MSP430); |
| 5134 | |
| 5135 | bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_Code_Model, |
| 5136 | large_model ? OFBA_MSPABI_Val_Code_Model_LARGE |
| 5137 | : OFBA_MSPABI_Val_Code_Model_SMALL); |
| 5138 | |
| 5139 | bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_Data_Model, |
| 5140 | large_model ? OFBA_MSPABI_Val_Code_Model_LARGE |
| 5141 | : OFBA_MSPABI_Val_Code_Model_SMALL); |
| 5142 | |
| 5143 | /* The data region GNU attribute is ignored for the small memory model. */ |
| 5144 | if (large_model) |
| 5145 | bfd_elf_add_obj_attr_int (stdoutput, OBJ_ATTR_GNU, |
| 5146 | Tag_GNU_MSP430_Data_Region, lower_data_region_only |
| 5147 | ? Val_GNU_MSP430_Data_Region_Lower |
| 5148 | : Val_GNU_MSP430_Data_Region_Any); |
| 5149 | } |
| 5150 | |
| 5151 | /* Returns FALSE if there is a msp430 specific reason why the |
| 5152 | subtraction of two same-section symbols cannot be computed by |
| 5153 | the assembler. */ |
| 5154 | |
| 5155 | bfd_boolean |
| 5156 | msp430_allow_local_subtract (expressionS * left, |
| 5157 | expressionS * right, |
| 5158 | segT section) |
| 5159 | { |
| 5160 | /* If the symbols are not in a code section then they are OK. */ |
| 5161 | if ((section->flags & SEC_CODE) == 0) |
| 5162 | return TRUE; |
| 5163 | |
| 5164 | if (S_IS_GAS_LOCAL (left->X_add_symbol) || S_IS_GAS_LOCAL (right->X_add_symbol)) |
| 5165 | return TRUE; |
| 5166 | |
| 5167 | if (left->X_add_symbol == right->X_add_symbol) |
| 5168 | return TRUE; |
| 5169 | |
| 5170 | /* We have to assume that there may be instructions between the |
| 5171 | two symbols and that relaxation may increase the distance between |
| 5172 | them. */ |
| 5173 | return FALSE; |
| 5174 | } |