| 1 | /* -*- c -*- */ |
| 2 | /* Copyright (C) 2013-2014 Free Software Foundation, Inc. |
| 3 | Contributed by Red Hat. |
| 4 | Written by DJ Delorie. |
| 5 | |
| 6 | This file is part of the GNU opcodes library. |
| 7 | |
| 8 | This library 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 | It is distributed in the hope that it will be useful, but WITHOUT |
| 14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 15 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| 16 | License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | MA 02110-1301, USA. */ |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #include <stdio.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <string.h> |
| 27 | #include "ansidecl.h" |
| 28 | #include "opcode/msp430-decode.h" |
| 29 | |
| 30 | static int trace = 0; |
| 31 | |
| 32 | typedef struct |
| 33 | { |
| 34 | MSP430_Opcode_Decoded *msp430; |
| 35 | int (*getbyte)(void *); |
| 36 | void *ptr; |
| 37 | unsigned char *op; |
| 38 | int op_ptr; |
| 39 | int pc; |
| 40 | } LocalData; |
| 41 | |
| 42 | #define AU ATTRIBUTE_UNUSED |
| 43 | #define GETBYTE() getbyte_swapped (ld) |
| 44 | #define B ((unsigned long) GETBYTE ()) |
| 45 | |
| 46 | static int |
| 47 | getbyte_swapped (LocalData *ld) |
| 48 | { |
| 49 | int b; |
| 50 | |
| 51 | if (ld->op_ptr == ld->msp430->n_bytes) |
| 52 | { |
| 53 | do |
| 54 | { |
| 55 | b = ld->getbyte (ld->ptr); |
| 56 | ld->op [(ld->msp430->n_bytes++)^1] = b; |
| 57 | } |
| 58 | while (ld->msp430->n_bytes & 1); |
| 59 | } |
| 60 | return ld->op[ld->op_ptr++]; |
| 61 | } |
| 62 | |
| 63 | #define ID(x) msp430->id = x |
| 64 | |
| 65 | #define OP(n, t, r, a) (msp430->op[n].type = t, \ |
| 66 | msp430->op[n].reg = r, \ |
| 67 | msp430->op[n].addend = a) |
| 68 | |
| 69 | #define OPX(n, t, r1, r2, a) \ |
| 70 | (msp430->op[n].type = t, \ |
| 71 | msp430->op[n].reg = r1, \ |
| 72 | msp430->op[n].reg2 = r2, \ |
| 73 | msp430->op[n].addend = a) |
| 74 | |
| 75 | #define SYNTAX(x) msp430->syntax = x |
| 76 | #define UNSUPPORTED() msp430->syntax = "*unknown*" |
| 77 | |
| 78 | #define DC(c) OP (0, MSP430_Operand_Immediate, 0, c) |
| 79 | #define DR(r) OP (0, MSP430_Operand_Register, r, 0) |
| 80 | #define DM(r, a) OP (0, MSP430_Operand_Indirect, r, a) |
| 81 | #define DA(a) OP (0, MSP430_Operand_Indirect, MSR_None, a) |
| 82 | #define AD(r, ad) encode_ad (r, ad, ld, 0) |
| 83 | #define ADX(r, ad, x) encode_ad (r, ad, ld, x) |
| 84 | |
| 85 | #define SC(c) OP (1, MSP430_Operand_Immediate, 0, c) |
| 86 | #define SR(r) OP (1, MSP430_Operand_Register, r, 0) |
| 87 | #define SM(r, a) OP (1, MSP430_Operand_Indirect, r, a) |
| 88 | #define SA(a) OP (1, MSP430_Operand_Indirect, MSR_None, a) |
| 89 | #define SI(r) OP (1, MSP430_Operand_Indirect_Postinc, r, 0) |
| 90 | #define AS(r, as) encode_as (r, as, ld, 0) |
| 91 | #define ASX(r, as, x) encode_as (r, as, ld, x) |
| 92 | |
| 93 | #define BW(x) msp430->size = (x ? 8 : 16) |
| 94 | /* The last 20 is for SWPBX.Z and SXTX.A. */ |
| 95 | #define ABW(a,x) msp430->size = (a ? ((x ? 8 : 16)) : (x ? 20 : 20)) |
| 96 | |
| 97 | #define IMMU(bytes) immediate (bytes, 0, ld) |
| 98 | #define IMMS(bytes) immediate (bytes, 1, ld) |
| 99 | |
| 100 | /* Helper macros for known status bits settings. */ |
| 101 | #define F_____ msp430->flags_1 = msp430->flags_0 = 0; msp430->flags_set = 0 |
| 102 | #define F_VNZC msp430->flags_1 = msp430->flags_0 = 0; msp430->flags_set = 0x87 |
| 103 | #define F_0NZC msp430->flags_1 = 0; msp430->flags_0 = 0x80; msp430->flags_set = 0x07 |
| 104 | |
| 105 | |
| 106 | /* The chip is little-endian, but GETBYTE byte-swaps words because the |
| 107 | decoder is based on 16-bit "words" so *this* logic is big-endian. */ |
| 108 | |
| 109 | static int |
| 110 | immediate (int bytes, int sign_extend, LocalData *ld) |
| 111 | { |
| 112 | unsigned long i = 0; |
| 113 | |
| 114 | switch (bytes) |
| 115 | { |
| 116 | case 1: |
| 117 | i |= B; |
| 118 | if (sign_extend && (i & 0x80)) |
| 119 | i -= 0x100; |
| 120 | break; |
| 121 | case 2: |
| 122 | i |= B << 8; |
| 123 | i |= B; |
| 124 | if (sign_extend && (i & 0x8000)) |
| 125 | i -= 0x10000; |
| 126 | break; |
| 127 | case 3: |
| 128 | i |= B << 16; |
| 129 | i |= B << 8; |
| 130 | i |= B; |
| 131 | if (sign_extend && (i & 0x800000)) |
| 132 | i -= 0x1000000; |
| 133 | break; |
| 134 | case 4: |
| 135 | i |= B << 24; |
| 136 | i |= B << 16; |
| 137 | i |= B << 8; |
| 138 | i |= B; |
| 139 | if (sign_extend && (i & 0x80000000ULL)) |
| 140 | i -= 0x100000000ULL; |
| 141 | break; |
| 142 | default: |
| 143 | fprintf (stderr, |
| 144 | "Programmer error: immediate() called with invalid byte count %d\n", |
| 145 | bytes); |
| 146 | abort (); |
| 147 | } |
| 148 | return i; |
| 149 | } |
| 150 | |
| 151 | /* |
| 152 | PC SP SR CG |
| 153 | As |
| 154 | 00 Rn - - R2 #0 |
| 155 | 01 X(Rn) Sym - X(abs) #1 |
| 156 | 10 (Rn) - - #4 #2 |
| 157 | 11 (Rn++) #imm - #8 #-1 |
| 158 | |
| 159 | Ad |
| 160 | 0 Rn - - - - |
| 161 | 1 X(Rn) Sym - X(abs) - */ |
| 162 | |
| 163 | static void |
| 164 | encode_ad (int reg, int ad, LocalData *ld, int ext) |
| 165 | { |
| 166 | MSP430_Opcode_Decoded *msp430 = ld->msp430; |
| 167 | |
| 168 | if (ad) |
| 169 | { |
| 170 | int x = IMMU(2) | (ext << 16); |
| 171 | switch (reg) |
| 172 | { |
| 173 | case 0: /* (PC) -> Symbolic. */ |
| 174 | DA (x + ld->pc + ld->op_ptr - 2); |
| 175 | break; |
| 176 | case 2: /* (SR) -> Absolute. */ |
| 177 | DA (x); |
| 178 | break; |
| 179 | default: |
| 180 | DM (reg, x); |
| 181 | break; |
| 182 | } |
| 183 | } |
| 184 | else |
| 185 | { |
| 186 | DR (reg); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | static void |
| 191 | encode_as (int reg, int as, LocalData *ld, int ext) |
| 192 | { |
| 193 | MSP430_Opcode_Decoded *msp430 = ld->msp430; |
| 194 | int x; |
| 195 | |
| 196 | switch (as) |
| 197 | { |
| 198 | case 0: |
| 199 | switch (reg) |
| 200 | { |
| 201 | case 3: |
| 202 | SC (0); |
| 203 | break; |
| 204 | default: |
| 205 | SR (reg); |
| 206 | break; |
| 207 | } |
| 208 | break; |
| 209 | case 1: |
| 210 | switch (reg) |
| 211 | { |
| 212 | case 0: /* PC -> Symbolic. */ |
| 213 | x = IMMU(2) | (ext << 16); |
| 214 | SA (x + ld->pc + ld->op_ptr - 2); |
| 215 | break; |
| 216 | case 2: /* SR -> Absolute. */ |
| 217 | x = IMMU(2) | (ext << 16); |
| 218 | SA (x); |
| 219 | break; |
| 220 | case 3: |
| 221 | SC (1); |
| 222 | break; |
| 223 | default: |
| 224 | x = IMMU(2) | (ext << 16); |
| 225 | SM (reg, x); |
| 226 | break; |
| 227 | } |
| 228 | break; |
| 229 | case 2: |
| 230 | switch (reg) |
| 231 | { |
| 232 | case 2: |
| 233 | SC (4); |
| 234 | break; |
| 235 | case 3: |
| 236 | SC (2); |
| 237 | break; |
| 238 | case MSR_None: |
| 239 | SA (0); |
| 240 | default: |
| 241 | SM (reg, 0); |
| 242 | break; |
| 243 | } |
| 244 | break; |
| 245 | case 3: |
| 246 | switch (reg) |
| 247 | { |
| 248 | case 0: |
| 249 | { |
| 250 | /* This fetch *is* the *PC++ that the opcode encodes :-) */ |
| 251 | x = IMMU(2) | (ext << 16); |
| 252 | SC (x); |
| 253 | } |
| 254 | break; |
| 255 | case 2: |
| 256 | SC (8); |
| 257 | break; |
| 258 | case 3: |
| 259 | SC (-1); |
| 260 | break; |
| 261 | default: |
| 262 | SI (reg); |
| 263 | break; |
| 264 | } |
| 265 | break; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | static void |
| 270 | encode_rep_zc (int srxt, int dsxt, LocalData *ld) |
| 271 | { |
| 272 | MSP430_Opcode_Decoded *msp430 = ld->msp430; |
| 273 | |
| 274 | msp430->repeat_reg = srxt & 1; |
| 275 | msp430->repeats = dsxt; |
| 276 | msp430->zc = (srxt & 2) ? 1 : 0; |
| 277 | } |
| 278 | |
| 279 | #define REPZC(s,d) encode_rep_zc (s, d, ld) |
| 280 | |
| 281 | static int |
| 282 | dopc_to_id (int dopc) |
| 283 | { |
| 284 | switch (dopc) |
| 285 | { |
| 286 | case 4: return MSO_mov; |
| 287 | case 5: return MSO_add; |
| 288 | case 6: return MSO_addc; |
| 289 | case 7: return MSO_subc; |
| 290 | case 8: return MSO_sub; |
| 291 | case 9: return MSO_cmp; |
| 292 | case 10: return MSO_dadd; |
| 293 | case 11: return MSO_bit; |
| 294 | case 12: return MSO_bic; |
| 295 | case 13: return MSO_bis; |
| 296 | case 14: return MSO_xor; |
| 297 | case 15: return MSO_and; |
| 298 | default: return MSO_unknown; |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | static int |
| 303 | sopc_to_id (int sop, int c) |
| 304 | { |
| 305 | switch (sop * 2 + c) |
| 306 | { |
| 307 | case 0: return MSO_rrc; |
| 308 | case 1: return MSO_swpb; |
| 309 | case 2: return MSO_rra; |
| 310 | case 3: return MSO_sxt; |
| 311 | case 4: return MSO_push; |
| 312 | case 5: return MSO_call; |
| 313 | case 6: return MSO_reti; |
| 314 | default: return MSO_unknown; |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | int |
| 319 | msp430_decode_opcode (unsigned long pc, |
| 320 | MSP430_Opcode_Decoded *msp430, |
| 321 | int (*getbyte)(void *), |
| 322 | void *ptr) |
| 323 | { |
| 324 | LocalData lds, *ld = &lds; |
| 325 | unsigned char op_buf[20] = {0}; |
| 326 | unsigned char *op = op_buf; |
| 327 | int raddr; |
| 328 | int al_bit; |
| 329 | int srxt_bits, dsxt_bits; |
| 330 | |
| 331 | lds.msp430 = msp430; |
| 332 | lds.getbyte = getbyte; |
| 333 | lds.ptr = ptr; |
| 334 | lds.op = op; |
| 335 | lds.op_ptr = 0; |
| 336 | lds.pc = pc; |
| 337 | |
| 338 | memset (msp430, 0, sizeof (*msp430)); |
| 339 | |
| 340 | /* These are overridden by an extension word. */ |
| 341 | al_bit = 1; |
| 342 | srxt_bits = 0; |
| 343 | dsxt_bits = 0; |
| 344 | |
| 345 | post_extension_word: |
| 346 | ; |
| 347 | |
| 348 | /* 430X extention word. */ |
| 349 | /** 0001 1srx t l 00 dsxt 430x */ |
| 350 | |
| 351 | al_bit = l; |
| 352 | srxt_bits = srx * 2 + t; |
| 353 | dsxt_bits = dsxt; |
| 354 | op = op_buf + lds.op_ptr; |
| 355 | msp430->ofs_430x = 1; |
| 356 | goto post_extension_word; |
| 357 | |
| 358 | /* double-op insns: |
| 359 | opcode:4 sreg:4 Ad:1 BW:1 As:2 Dreg:4 |
| 360 | |
| 361 | single-op insn: |
| 362 | opcode:9 BW:1 Ad:2 DSreg:4 |
| 363 | |
| 364 | jumps: |
| 365 | opcode:3 Cond:3 pcrel:10. */ |
| 366 | |
| 367 | /* Double-Operand "opcode" fields. */ |
| 368 | /** VARY dopc 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 */ |
| 369 | |
| 370 | /** dopc sreg a b as dreg %D%b %1,%0 */ |
| 371 | |
| 372 | ID (dopc_to_id (dopc)); ASX (sreg, as, srxt_bits); ADX (dreg, a, dsxt_bits); ABW (al_bit, b); |
| 373 | if (a == 0 && as == 0) |
| 374 | REPZC (srxt_bits, dsxt_bits); |
| 375 | |
| 376 | switch (msp430->id) |
| 377 | { |
| 378 | case MSO_mov: F_____; break; |
| 379 | case MSO_add: F_VNZC; break; |
| 380 | case MSO_addc: F_VNZC; break; |
| 381 | case MSO_subc: F_VNZC; break; |
| 382 | case MSO_sub: F_VNZC; break; |
| 383 | case MSO_cmp: F_VNZC; break; |
| 384 | case MSO_dadd: F_VNZC; break; |
| 385 | case MSO_bit: F_0NZC; break; |
| 386 | case MSO_bic: F_____; break; |
| 387 | case MSO_bis: F_____; break; |
| 388 | case MSO_xor: F_VNZC; break; |
| 389 | case MSO_and: F_0NZC; break; |
| 390 | default: break; |
| 391 | } |
| 392 | |
| 393 | /** 0001 00so c b ad dreg %S%b %1 */ |
| 394 | |
| 395 | ID (sopc_to_id (so,c)); ASX (dreg, ad, srxt_bits); ABW (al_bit, b); |
| 396 | |
| 397 | if (ad == 0) |
| 398 | REPZC (srxt_bits, dsxt_bits); |
| 399 | |
| 400 | /* The helper functions encode for source, but it's |
| 401 | both source and dest, with a few documented exceptions. */ |
| 402 | msp430->op[0] = msp430->op[1]; |
| 403 | |
| 404 | /* RETI ignores the operand. */ |
| 405 | if (msp430->id == MSO_reti) |
| 406 | msp430->syntax = "%S"; |
| 407 | |
| 408 | switch (msp430->id) |
| 409 | { |
| 410 | case MSO_rrc: F_VNZC; break; |
| 411 | case MSO_swpb: F_____; break; |
| 412 | case MSO_rra: F_0NZC; break; |
| 413 | case MSO_sxt: F_0NZC; break; |
| 414 | case MSO_push: F_____; break; |
| 415 | case MSO_call: F_____; break; |
| 416 | case MSO_reti: F_VNZC; break; |
| 417 | default: break; |
| 418 | } |
| 419 | |
| 420 | /* 20xx 0010 0000 ---- ---- |
| 421 | 3cxx 0011 1100 ---- ---- |
| 422 | 001j mp-- ---- ----. */ |
| 423 | /** 001jmp aa addrlsbs %J %1 */ |
| 424 | |
| 425 | raddr = (aa << 9) | (addrlsbs << 1); |
| 426 | if (raddr & 0x400) |
| 427 | raddr = raddr - 0x800; |
| 428 | /* This is a pc-relative jump, but we don't use SM because that |
| 429 | would load the target address from the memory at X(PC), not use |
| 430 | PC+X *as* the address. So we use SC to use the address, not the |
| 431 | data at that address. */ |
| 432 | ID (MSO_jmp); SC (pc + raddr + msp430->n_bytes); |
| 433 | msp430->cond = jmp; |
| 434 | |
| 435 | /* Extended instructions. */ |
| 436 | |
| 437 | /** 0000 srcr 0000 dstr MOVA @%1, %0 */ |
| 438 | ID (MSO_mov); SM (srcr, 0); DR (dstr); |
| 439 | msp430->size = 20; |
| 440 | msp430->ofs_430x = 1; |
| 441 | |
| 442 | /** 0000 srcr 0001 dstr MOVA @%1+, %0 */ |
| 443 | ID (MSO_mov); SI (srcr); DR (dstr); |
| 444 | msp430->size = 20; |
| 445 | msp430->ofs_430x = 1; |
| 446 | |
| 447 | /** 0000 srcr 0010 dstr MOVA &%1, %0 */ |
| 448 | ID (MSO_mov); SA ((srcr << 16) + IMMU(2)); DR (dstr); |
| 449 | msp430->size = 20; |
| 450 | msp430->ofs_430x = 1; |
| 451 | |
| 452 | /** 0000 srcr 0011 dstr MOVA %1, %0 */ |
| 453 | ID (MSO_mov); SM (srcr, IMMS(2)); DR (dstr); |
| 454 | msp430->size = 20; |
| 455 | msp430->ofs_430x = 1; |
| 456 | |
| 457 | /** 0000 srcr 0110 dstr MOVA %1, &%0 */ |
| 458 | ID (MSO_mov); SR (srcr); DA ((dstr << 16) + IMMU(2)); |
| 459 | msp430->size = 20; |
| 460 | msp430->ofs_430x = 1; |
| 461 | |
| 462 | /** 0000 srcr 0111 dstr MOVA %1, &%0 */ |
| 463 | ID (MSO_mov); SR (srcr); DM (dstr, IMMS(2)); |
| 464 | msp430->size = 20; |
| 465 | msp430->ofs_430x = 1; |
| 466 | |
| 467 | /** 0000 srcr 1000 dstr MOVA %1, %0 */ |
| 468 | ID (MSO_mov); SC ((srcr << 16) + IMMU(2)); DR (dstr); |
| 469 | msp430->size = 20; |
| 470 | msp430->ofs_430x = 1; |
| 471 | |
| 472 | /** 0000 srcr 1001 dstr CMPA %1, %0 */ |
| 473 | ID (MSO_cmp); SC ((srcr << 16) + IMMU(2)); DR (dstr); |
| 474 | msp430->size = 20; |
| 475 | msp430->ofs_430x = 1; |
| 476 | F_VNZC; |
| 477 | |
| 478 | /** 0000 srcr 1010 dstr ADDA %1, %0 */ |
| 479 | ID (MSO_add); SC ((srcr << 16) + IMMU(2)); DR (dstr); |
| 480 | msp430->size = 20; |
| 481 | msp430->ofs_430x = 1; |
| 482 | F_VNZC; |
| 483 | |
| 484 | /** 0000 srcr 1011 dstr SUBA %1, %0 */ |
| 485 | ID (MSO_sub); SC ((srcr << 16) + IMMU(2)); DR (dstr); |
| 486 | msp430->size = 20; |
| 487 | msp430->ofs_430x = 1; |
| 488 | F_VNZC; |
| 489 | |
| 490 | /** 0000 srcr 1011 dstr SUBA %1, %0 */ |
| 491 | ID (MSO_sub); SC ((srcr << 16) + IMMU(2)); DR (dstr); |
| 492 | msp430->size = 20; |
| 493 | msp430->ofs_430x = 1; |
| 494 | F_VNZC; |
| 495 | |
| 496 | /** 0000 srcr 1100 dstr MOVA %1, %0 */ |
| 497 | ID (MSO_mov); SR (srcr); DR (dstr); |
| 498 | msp430->size = 20; |
| 499 | msp430->ofs_430x = 1; |
| 500 | |
| 501 | /** 0000 srcr 1101 dstr CMPA %1, %0 */ |
| 502 | ID (MSO_cmp); SR (srcr); DR (dstr); |
| 503 | msp430->size = 20; |
| 504 | msp430->ofs_430x = 1; |
| 505 | F_VNZC; |
| 506 | |
| 507 | /** 0000 srcr 1110 dstr ADDA %1, %0 */ |
| 508 | ID (MSO_add); SR (srcr); DR (dstr); |
| 509 | msp430->size = 20; |
| 510 | msp430->ofs_430x = 1; |
| 511 | F_VNZC; |
| 512 | |
| 513 | /** 0000 srcr 1111 dstr SUBA %1, %0 */ |
| 514 | ID (MSO_sub); SR (srcr); DR (dstr); |
| 515 | msp430->size = 20; |
| 516 | msp430->ofs_430x = 1; |
| 517 | F_VNZC; |
| 518 | |
| 519 | /** 0000 bt00 010w dstr RRCM.A %c, %0 */ |
| 520 | ID (MSO_rrc); DR (dstr); SR (dstr); |
| 521 | msp430->repeats = bt; |
| 522 | msp430->size = w ? 16 : 20; |
| 523 | msp430->ofs_430x = 1; |
| 524 | F_0NZC; |
| 525 | |
| 526 | /** 0000 bt01 010w dstr RRAM.A %c, %0 */ |
| 527 | ID (MSO_rra); DR (dstr); SR (dstr); |
| 528 | msp430->repeats = bt; |
| 529 | msp430->size = w ? 16 : 20; |
| 530 | msp430->ofs_430x = 1; |
| 531 | F_0NZC; |
| 532 | |
| 533 | /** 0000 bt10 010w dstr RLAM.A %c, %0 */ |
| 534 | ID (MSO_add); DR (dstr); SR (dstr); |
| 535 | msp430->repeats = bt; |
| 536 | msp430->size = w ? 16 : 20; |
| 537 | msp430->ofs_430x = 1; |
| 538 | F_0NZC; |
| 539 | |
| 540 | /** 0000 bt11 010w dstr RRUM.A %c, %0 */ |
| 541 | ID (MSO_rru); DR (dstr); SR (dstr); |
| 542 | msp430->repeats = bt; |
| 543 | msp430->size = w ? 16 : 20; |
| 544 | msp430->ofs_430x = 1; |
| 545 | F_0NZC; |
| 546 | |
| 547 | /** 0001 0011 0000 0000 RETI */ |
| 548 | ID (MSO_reti); |
| 549 | msp430->size = 20; |
| 550 | msp430->ofs_430x = 1; |
| 551 | |
| 552 | /** 0001 0011 01as dstr CALLA %0 */ |
| 553 | ID (MSO_call); AS (dstr, as); |
| 554 | msp430->size = 20; |
| 555 | msp430->ofs_430x = 1; |
| 556 | |
| 557 | /** 0001 0011 1000 extb CALLA %0 */ |
| 558 | ID (MSO_call); SA (IMMU(2) | (extb << 16)); |
| 559 | msp430->size = 20; |
| 560 | msp430->ofs_430x = 1; |
| 561 | |
| 562 | /** 0001 0011 1001 extb CALLA %0 */ |
| 563 | raddr = IMMU(2) | (extb << 16); |
| 564 | if (raddr & 0x80000) |
| 565 | raddr -= 0x100000; |
| 566 | ID (MSO_call); SA (pc + raddr + msp430->n_bytes); |
| 567 | msp430->size = 20; |
| 568 | msp430->ofs_430x = 1; |
| 569 | |
| 570 | /** 0001 0011 1011 extb CALLA %0 */ |
| 571 | ID (MSO_call); SC (IMMU(2) | (extb << 16)); |
| 572 | msp430->size = 20; |
| 573 | msp430->ofs_430x = 1; |
| 574 | |
| 575 | /** 0001 010w bits srcr PUSHM.A %0 */ |
| 576 | ID (MSO_push); SR (srcr); |
| 577 | msp430->size = w ? 16 : 20; |
| 578 | msp430->repeats = bits; |
| 579 | msp430->ofs_430x = 1; |
| 580 | |
| 581 | /** 0001 011w bits dstr POPM.A %0 */ |
| 582 | ID (MSO_pop); DR (dstr); |
| 583 | msp430->size = w ? 16 : 20; |
| 584 | msp430->repeats = bits; |
| 585 | msp430->ofs_430x = 1; |
| 586 | |
| 587 | /** */ |
| 588 | |
| 589 | return msp430->n_bytes; |
| 590 | } |