external/gpl3/binutils/dist/gas/config/bfin-parse.y

   1 /* bfin-parse.y  ADI Blackfin parser
   2    Copyright 2005, 2006, 2007
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GAS, the GNU Assembler.
   6
   7    GAS is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3, or (at your option)
  10    any later version.
  11
  12    GAS is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GAS; see the file COPYING.  If not, write to the Free
  19    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  20    02110-1301, USA.  */
  21 %{
  22
  23 #include "as.h"
  24 #include <obstack.h>
  25
  26 #include "bfin-aux.h"  // opcode generating auxiliaries
  27 #include "libbfd.h"
  28 #include "elf/common.h"
  29 #include "elf/bfin.h"
  30
  31 #define DSP32ALU(aopcde, HL, dst1, dst0, src0, src1, s, x, aop) \
  32         bfin_gen_dsp32alu (HL, aopcde, aop, s, x, dst0, dst1, src0, src1)
  33
  34 #define DSP32MAC(op1, MM, mmod, w1, P, h01, h11, h00, h10, dst, op0, src0, src1, w0) \
  35         bfin_gen_dsp32mac (op1, MM, mmod, w1, P, h01, h11, h00, h10, op0, \
  36                            dst, src0, src1, w0)
  37
  38 #define DSP32MULT(op1, MM, mmod, w1, P, h01, h11, h00, h10, dst, op0, src0, src1, w0) \
  39         bfin_gen_dsp32mult (op1, MM, mmod, w1, P, h01, h11, h00, h10, op0, \
  40                             dst, src0, src1, w0)
  41
  42 #define DSP32SHIFT(sopcde, dst0, src0, src1, sop, hls)  \
  43         bfin_gen_dsp32shift (sopcde, dst0, src0, src1, sop, hls)
  44
  45 #define DSP32SHIFTIMM(sopcde, dst0, immag, src1, sop, hls)  \
  46         bfin_gen_dsp32shiftimm (sopcde, dst0, immag, src1, sop, hls)
  47
  48 #define LDIMMHALF_R(reg, h, s, z, hword) \
  49         bfin_gen_ldimmhalf (reg, h, s, z, hword, 1)
  50
  51 #define LDIMMHALF_R5(reg, h, s, z, hword) \
  52         bfin_gen_ldimmhalf (reg, h, s, z, hword, 2)
  53
  54 #define LDSTIDXI(ptr, reg, w, sz, z, offset)  \
  55         bfin_gen_ldstidxi (ptr, reg, w, sz, z, offset)
  56
  57 #define LDST(ptr, reg, aop, sz, z, w)  \
  58         bfin_gen_ldst (ptr, reg, aop, sz, z, w)
  59
  60 #define LDSTII(ptr, reg, offset, w, op)  \
  61         bfin_gen_ldstii (ptr, reg, offset, w, op)
  62
  63 #define DSPLDST(i, m, reg, aop, w) \
  64         bfin_gen_dspldst (i, reg, aop, w, m)
  65
  66 #define LDSTPMOD(ptr, reg, idx, aop, w) \
  67         bfin_gen_ldstpmod (ptr, reg, aop, w, idx)
  68
  69 #define LDSTIIFP(offset, reg, w)  \
  70         bfin_gen_ldstiifp (reg, offset, w)
  71
  72 #define LOGI2OP(dst, src, opc) \
  73         bfin_gen_logi2op (opc, src, dst.regno & CODE_MASK)
  74
  75 #define ALU2OP(dst, src, opc)  \
  76         bfin_gen_alu2op (dst, src, opc)
  77
  78 #define BRCC(t, b, offset) \
  79         bfin_gen_brcc (t, b, offset)
  80
  81 #define UJUMP(offset) \
  82         bfin_gen_ujump (offset)
  83
  84 #define PROGCTRL(prgfunc, poprnd) \
  85         bfin_gen_progctrl (prgfunc, poprnd)
  86
  87 #define PUSHPOPMULTIPLE(dr, pr, d, p, w) \
  88         bfin_gen_pushpopmultiple (dr, pr, d, p, w)
  89
  90 #define PUSHPOPREG(reg, w) \
  91         bfin_gen_pushpopreg (reg, w)
  92
  93 #define CALLA(addr, s)  \
  94         bfin_gen_calla (addr, s)
  95
  96 #define LINKAGE(r, framesize) \
  97         bfin_gen_linkage (r, framesize)
  98
  99 #define COMPI2OPD(dst, src, op)  \
 100         bfin_gen_compi2opd (dst, src, op)
 101
 102 #define COMPI2OPP(dst, src, op)  \
 103         bfin_gen_compi2opp (dst, src, op)
 104
 105 #define DAGMODIK(i, op)  \
 106         bfin_gen_dagmodik (i, op)
 107
 108 #define DAGMODIM(i, m, op, br)  \
 109         bfin_gen_dagmodim (i, m, op, br)
 110
 111 #define COMP3OP(dst, src0, src1, opc)   \
 112         bfin_gen_comp3op (src0, src1, dst, opc)
 113
 114 #define PTR2OP(dst, src, opc)   \
 115         bfin_gen_ptr2op (dst, src, opc)
 116
 117 #define CCFLAG(x, y, opc, i, g)  \
 118         bfin_gen_ccflag (x, y, opc, i, g)
 119
 120 #define CCMV(src, dst, t) \
 121         bfin_gen_ccmv (src, dst, t)
 122
 123 #define CACTRL(reg, a, op) \
 124         bfin_gen_cactrl (reg, a, op)
 125
 126 #define LOOPSETUP(soffset, c, rop, eoffset, reg) \
 127         bfin_gen_loopsetup (soffset, c, rop, eoffset, reg)
 128
 129 #define HL2(r1, r0)  (IS_H (r1) << 1 | IS_H (r0))
 130 #define IS_RANGE(bits, expr, sign, mul)    \
 131         value_match(expr, bits, sign, mul, 1)
 132 #define IS_URANGE(bits, expr, sign, mul)    \
 133         value_match(expr, bits, sign, mul, 0)
 134 #define IS_CONST(expr) (expr->type == Expr_Node_Constant)
 135 #define IS_RELOC(expr) (expr->type != Expr_Node_Constant)
 136 #define IS_IMM(expr, bits)  value_match (expr, bits, 0, 1, 1)
 137 #define IS_UIMM(expr, bits)  value_match (expr, bits, 0, 1, 0)
 138
 139 #define IS_PCREL4(expr) \
 140         (value_match (expr, 4, 0, 2, 0))
 141
 142 #define IS_LPPCREL10(expr) \
 143         (value_match (expr, 10, 0, 2, 0))
 144
 145 #define IS_PCREL10(expr) \
 146         (value_match (expr, 10, 0, 2, 1))
 147
 148 #define IS_PCREL12(expr) \
 149         (value_match (expr, 12, 0, 2, 1))
 150
 151 #define IS_PCREL24(expr) \
 152         (value_match (expr, 24, 0, 2, 1))
 153
 154
 155 static int value_match (Expr_Node *expr, int sz, int sign, int mul, int issigned);
 156
 157 extern FILE *errorf;
 158 extern INSTR_T insn;
 159
 160 static Expr_Node *binary (Expr_Op_Type, Expr_Node *, Expr_Node *);
 161 static Expr_Node *unary  (Expr_Op_Type, Expr_Node *);
 162
 163 static void notethat (char *format, ...);
 164
 165 char *current_inputline;
 166 extern char *yytext;
 167 int yyerror (char *msg);
 168
 169 void error (char *format, ...)
 170 {
 171     va_list ap;
 172     char buffer[2000];
 173
 174     va_start (ap, format);
 175     vsprintf (buffer, format, ap);
 176     va_end (ap);
 177
 178     as_bad (buffer);
 179 }
 180
 181 int
 182 yyerror (char *msg)
 183 {
 184   if (msg[0] == '\0')
 185     error ("%s", msg);
 186
 187   else if (yytext[0] != ';')
 188     error ("%s. Input text was %s.", msg, yytext);
 189   else
 190     error ("%s.", msg);
 191
 192   return -1;
 193 }
 194
 195 static int
 196 in_range_p (Expr_Node *expr, int from, int to, unsigned int mask)
 197 {
 198   int val = EXPR_VALUE (expr);
 199   if (expr->type != Expr_Node_Constant)
 200     return 0;
 201   if (val < from || val > to)
 202     return 0;
 203   return (val & mask) == 0;
 204 }
 205
 206 extern int yylex (void);
 207
 208 #define imm3(x) EXPR_VALUE (x)
 209 #define imm4(x) EXPR_VALUE (x)
 210 #define uimm4(x) EXPR_VALUE (x)
 211 #define imm5(x) EXPR_VALUE (x)
 212 #define uimm5(x) EXPR_VALUE (x)
 213 #define imm6(x) EXPR_VALUE (x)
 214 #define imm7(x) EXPR_VALUE (x)
 215 #define imm16(x) EXPR_VALUE (x)
 216 #define uimm16s4(x) ((EXPR_VALUE (x)) >> 2)
 217 #define uimm16(x) EXPR_VALUE (x)
 218
 219 /* Return true if a value is inside a range.  */
 220 #define IN_RANGE(x, low, high) \
 221   (((EXPR_VALUE(x)) >= (low)) && (EXPR_VALUE(x)) <= ((high)))
 222
 223 /* Auxiliary functions.  */
 224
 225 static void
 226 neg_value (Expr_Node *expr)
 227 {
 228   expr->value.i_value = -expr->value.i_value;
 229 }
 230
 231 static int
 232 valid_dreg_pair (Register *reg1, Expr_Node *reg2)
 233 {
 234   if (!IS_DREG (*reg1))
 235     {
 236       yyerror ("Dregs expected");
 237       return 0;
 238     }
 239
 240   if (reg1->regno != 1 && reg1->regno != 3)
 241     {
 242       yyerror ("Bad register pair");
 243       return 0;
 244     }
 245
 246   if (imm7 (reg2) != reg1->regno - 1)
 247     {
 248       yyerror ("Bad register pair");
 249       return 0;
 250     }
 251
 252   reg1->regno--;
 253   return 1;
 254 }
 255
 256 static int
 257 check_multiply_halfregs (Macfunc *aa, Macfunc *ab)
 258 {
 259   if ((!REG_EQUAL (aa->s0, ab->s0) && !REG_EQUAL (aa->s0, ab->s1))
 260       || (!REG_EQUAL (aa->s1, ab->s1) && !REG_EQUAL (aa->s1, ab->s0)))
 261     return yyerror ("Source multiplication register mismatch");
 262
 263   return 0;
 264 }
 265
 266
 267 /* Check mac option.  */
 268
 269 static int
 270 check_macfunc_option (Macfunc *a, Opt_mode *opt)
 271 {
 272   /* Default option is always valid.  */
 273   if (opt->mod == 0)
 274     return 0;
 275
 276   if ((a->w == 1 && a->P == 1
 277        && opt->mod != M_FU && opt->mod != M_IS && opt->mod != M_IU
 278        && opt->mod != M_S2RND && opt->mod != M_ISS2)
 279       || (a->w == 1 && a->P == 0
 280           && opt->mod != M_FU && opt->mod != M_IS && opt->mod != M_IU
 281           && opt->mod != M_T && opt->mod != M_TFU && opt->mod != M_S2RND
 282           && opt->mod != M_ISS2 && opt->mod != M_IH)
 283       || (a->w == 0 && a->P == 0
 284           && opt->mod != M_FU && opt->mod != M_IS && opt->mod != M_W32))
 285     return -1;
 286
 287   return 0;
 288 }
 289
 290 /* Check (vector) mac funcs and ops.  */
 291
 292 static int
 293 check_macfuncs (Macfunc *aa, Opt_mode *opa,
 294                 Macfunc *ab, Opt_mode *opb)
 295 {
 296   /* Variables for swapping.  */
 297   Macfunc mtmp;
 298   Opt_mode otmp;
 299
 300   /* The option mode should be put at the end of the second instruction
 301      of the vector except M, which should follow MAC1 instruction.  */
 302   if (opa->mod != 0)
 303     return yyerror ("Bad opt mode");
 304
 305   /* If a0macfunc comes before a1macfunc, swap them.  */
 306
 307   if (aa->n == 0)
 308     {
 309       /*  (M) is not allowed here.  */
 310       if (opa->MM != 0)
 311         return yyerror ("(M) not allowed with A0MAC");
 312       if (ab->n != 1)
 313         return yyerror ("Vector AxMACs can't be same");
 314
 315       mtmp = *aa; *aa = *ab; *ab = mtmp;
 316       otmp = *opa; *opa = *opb; *opb = otmp;
 317     }
 318   else
 319     {
 320       if (opb->MM != 0)
 321         return yyerror ("(M) not allowed with A0MAC");
 322       if (ab->n != 0)
 323         return yyerror ("Vector AxMACs can't be same");
 324     }
 325
 326   /*  If both ops are one of 0, 1, or 2, we have multiply_halfregs in both
 327   assignment_or_macfuncs.  */
 328   if ((aa->op == 0 || aa->op == 1 || aa->op == 2)
 329       && (ab->op == 0 || ab->op == 1 || ab->op == 2))
 330     {
 331       if (check_multiply_halfregs (aa, ab) < 0)
 332         return -1;
 333     }
 334   else
 335     {
 336       /*  Only one of the assign_macfuncs has a half reg multiply
 337       Evil trick: Just 'OR' their source register codes:
 338       We can do that, because we know they were initialized to 0
 339       in the rules that don't use multiply_halfregs.  */
 340       aa->s0.regno |= (ab->s0.regno & CODE_MASK);
 341       aa->s1.regno |= (ab->s1.regno & CODE_MASK);
 342     }
 343
 344   if (aa->w == ab->w  && aa->P != ab->P)
 345     {
 346       return yyerror ("macfuncs must differ");
 347       if (aa->w && (aa->dst.regno - ab->dst.regno != 1))
 348         return yyerror ("Destination Dregs must differ by one");
 349     }
 350
 351   /* Make sure mod flags get ORed, too.  */
 352   opb->mod |= opa->mod;
 353
 354   /* Check option.  */
 355   if (check_macfunc_option (aa, opb) < 0
 356       && check_macfunc_option (ab, opb) < 0)
 357     return yyerror ("bad option");
 358
 359   /* Make sure first macfunc has got both P flags ORed.  */
 360   aa->P |= ab->P;
 361
 362   return 0;
 363 }
 364
 365
 366 static int
 367 is_group1 (INSTR_T x)
 368 {
 369   /* Group1 is dpsLDST, LDSTpmod, LDST, LDSTiiFP, LDSTii.  */
 370   if ((x->value & 0xc000) == 0x8000 || (x->value == 0x0000))
 371     return 1;
 372
 373   return 0;
 374 }
 375
 376 static int
 377 is_group2 (INSTR_T x)
 378 {
 379   if ((((x->value & 0xfc00) == 0x9c00)  /* dspLDST.  */
 380        && !((x->value & 0xfde0) == 0x9c60)  /* dagMODim.  */
 381        && !((x->value & 0xfde0) == 0x9ce0)  /* dagMODim with bit rev.  */
 382        && !((x->value & 0xfde0) == 0x9d60)) /* pick dagMODik.  */
 383       || (x->value == 0x0000))
 384     return 1;
 385   return 0;
 386 }
 387
 388 %}
 389
 390 %union {
 391   INSTR_T instr;
 392   Expr_Node *expr;
 393   SYMBOL_T symbol;
 394   long value;
 395   Register reg;
 396   Macfunc macfunc;
 397   struct { int r0; int s0; int x0; int aop; } modcodes;
 398   struct { int r0; } r0;
 399   Opt_mode mod;
 400 }
 401
 402
 403 /* Tokens.  */
 404
 405 /* Vector Specific.  */
 406 %token BYTEOP16P BYTEOP16M
 407 %token BYTEOP1P BYTEOP2P BYTEOP2M BYTEOP3P
 408 %token BYTEUNPACK BYTEPACK
 409 %token PACK
 410 %token SAA
 411 %token ALIGN8 ALIGN16 ALIGN24
 412 %token VIT_MAX
 413 %token EXTRACT DEPOSIT EXPADJ SEARCH
 414 %token ONES SIGN SIGNBITS
 415
 416 /* Stack.  */
 417 %token LINK UNLINK
 418
 419 /* Registers.  */
 420 %token REG
 421 %token PC
 422 %token CCREG BYTE_DREG
 423 %token REG_A_DOUBLE_ZERO REG_A_DOUBLE_ONE
 424 %token A_ZERO_DOT_L A_ZERO_DOT_H A_ONE_DOT_L A_ONE_DOT_H
 425 %token HALF_REG
 426
 427 /* Progctrl.  */
 428 %token NOP
 429 %token RTI RTS RTX RTN RTE
 430 %token HLT IDLE
 431 %token STI CLI
 432 %token CSYNC SSYNC
 433 %token EMUEXCPT
 434 %token RAISE EXCPT
 435 %token LSETUP
 436 %token LOOP
 437 %token LOOP_BEGIN
 438 %token LOOP_END
 439 %token DISALGNEXCPT
 440 %token JUMP JUMP_DOT_S JUMP_DOT_L
 441 %token CALL
 442
 443 /* Emulator only.  */
 444 %token ABORT
 445
 446 /* Operators.  */
 447 %token NOT TILDA BANG
 448 %token AMPERSAND BAR
 449 %token PERCENT
 450 %token CARET
 451 %token BXOR
 452
 453 %token MINUS PLUS STAR SLASH
 454 %token NEG
 455 %token MIN MAX ABS
 456 %token DOUBLE_BAR
 457 %token _PLUS_BAR_PLUS _PLUS_BAR_MINUS _MINUS_BAR_PLUS _MINUS_BAR_MINUS
 458 %token _MINUS_MINUS _PLUS_PLUS
 459
 460 /* Shift/rotate ops.  */
 461 %token SHIFT LSHIFT ASHIFT BXORSHIFT
 462 %token _GREATER_GREATER_GREATER_THAN_ASSIGN
 463 %token ROT
 464 %token LESS_LESS GREATER_GREATER
 465 %token _GREATER_GREATER_GREATER
 466 %token _LESS_LESS_ASSIGN _GREATER_GREATER_ASSIGN
 467 %token DIVS DIVQ
 468
 469 /* In place operators.  */
 470 %token ASSIGN _STAR_ASSIGN
 471 %token _BAR_ASSIGN _CARET_ASSIGN _AMPERSAND_ASSIGN
 472 %token _MINUS_ASSIGN _PLUS_ASSIGN
 473
 474 /* Assignments, comparisons.  */
 475 %token _ASSIGN_BANG _LESS_THAN_ASSIGN _ASSIGN_ASSIGN
 476 %token GE LT LE GT
 477 %token LESS_THAN
 478
 479 /* Cache.  */
 480 %token FLUSHINV FLUSH
 481 %token IFLUSH PREFETCH
 482
 483 /* Misc.  */
 484 %token PRNT
 485 %token OUTC
 486 %token WHATREG
 487 %token TESTSET
 488
 489 /* Modifiers.  */
 490 %token ASL ASR
 491 %token B W
 492 %token NS S CO SCO
 493 %token TH TL
 494 %token BP
 495 %token BREV
 496 %token X Z
 497 %token M MMOD
 498 %token R RND RNDL RNDH RND12 RND20
 499 %token V
 500 %token LO HI
 501
 502 /* Bit ops.  */
 503 %token BITTGL BITCLR BITSET BITTST BITMUX
 504
 505 /* Debug.  */
 506 %token DBGAL DBGAH DBGHALT DBG DBGA DBGCMPLX
 507
 508 /* Semantic auxiliaries.  */
 509
 510 %token IF COMMA BY
 511 %token COLON SEMICOLON
 512 %token RPAREN LPAREN LBRACK RBRACK
 513 %token STATUS_REG
 514 %token MNOP
 515 %token SYMBOL NUMBER
 516 %token GOT GOT17M4 FUNCDESC_GOT17M4
 517 %token AT PLTPC
 518
 519 /* Types.  */
 520 %type <instr> asm
 521 %type <value> MMOD
 522 %type <mod> opt_mode
 523
 524 %type <value> NUMBER
 525 %type <r0> aligndir
 526 %type <modcodes> byteop_mod
 527 %type <reg> a_assign
 528 %type <reg> a_plusassign
 529 %type <reg> a_minusassign
 530 %type <macfunc> multiply_halfregs
 531 %type <macfunc> assign_macfunc
 532 %type <macfunc> a_macfunc
 533 %type <expr> expr_1
 534 %type <instr> asm_1
 535 %type <r0> vmod
 536 %type <modcodes> vsmod
 537 %type <modcodes> ccstat
 538 %type <r0> cc_op
 539 %type <reg> CCREG
 540 %type <reg> reg_with_postinc
 541 %type <reg> reg_with_predec
 542
 543 %type <r0> searchmod
 544 %type <expr> symbol
 545 %type <symbol> SYMBOL
 546 %type <expr> eterm
 547 %type <reg> REG
 548 %type <reg> BYTE_DREG
 549 %type <reg> REG_A_DOUBLE_ZERO
 550 %type <reg> REG_A_DOUBLE_ONE
 551 %type <reg> REG_A
 552 %type <reg> STATUS_REG
 553 %type <expr> expr
 554 %type <r0> xpmod
 555 %type <r0> xpmod1
 556 %type <modcodes> smod
 557 %type <modcodes> b3_op
 558 %type <modcodes> rnd_op
 559 %type <modcodes> post_op
 560 %type <reg> HALF_REG
 561 %type <r0> iu_or_nothing
 562 %type <r0> plus_minus
 563 %type <r0> asr_asl
 564 %type <r0> asr_asl_0
 565 %type <modcodes> sco
 566 %type <modcodes> amod0
 567 %type <modcodes> amod1
 568 %type <modcodes> amod2
 569 %type <r0> op_bar_op
 570 %type <r0> w32_or_nothing
 571 %type <r0> c_align
 572 %type <r0> min_max
 573 %type <expr> got
 574 %type <expr> got_or_expr
 575 %type <expr> pltpc
 576 %type <value> any_gotrel GOT GOT17M4 FUNCDESC_GOT17M4
 577
 578 /* Precedence rules.  */
 579 %left BAR
 580 %left CARET
 581 %left AMPERSAND
 582 %left LESS_LESS GREATER_GREATER
 583 %left PLUS MINUS
 584 %left STAR SLASH PERCENT
 585
 586 %right ASSIGN
 587
 588 %right TILDA BANG
 589 %start statement
 590 %%
 591 statement:
 592         | asm
 593         {
 594           insn = $1;
 595           if (insn == (INSTR_T) 0)
 596             return NO_INSN_GENERATED;
 597           else if (insn == (INSTR_T) - 1)
 598             return SEMANTIC_ERROR;
 599           else
 600             return INSN_GENERATED;
 601         }
 602         ;
 603
 604 asm: asm_1 SEMICOLON
 605         /* Parallel instructions.  */
 606         | asm_1 DOUBLE_BAR asm_1 DOUBLE_BAR asm_1 SEMICOLON
 607         {
 608           if (($1->value & 0xf800) == 0xc000)
 609             {
 610               if (is_group1 ($3) && is_group2 ($5))
 611                 $$ = bfin_gen_multi_instr ($1, $3, $5);
 612               else if (is_group2 ($3) && is_group1 ($5))
 613                 $$ = bfin_gen_multi_instr ($1, $5, $3);
 614               else
 615                 return yyerror ("Wrong 16 bit instructions groups, slot 2 and slot 3 must be 16-bit instrution group");
 616             }
 617           else if (($3->value & 0xf800) == 0xc000)
 618             {
 619               if (is_group1 ($1) && is_group2 ($5))
 620                 $$ = bfin_gen_multi_instr ($3, $1, $5);
 621               else if (is_group2 ($1) && is_group1 ($5))
 622                 $$ = bfin_gen_multi_instr ($3, $5, $1);
 623               else
 624                 return yyerror ("Wrong 16 bit instructions groups, slot 1 and slot 3 must be 16-bit instrution group");
 625             }
 626           else if (($5->value & 0xf800) == 0xc000)
 627             {
 628               if (is_group1 ($1) && is_group2 ($3))
 629                 $$ = bfin_gen_multi_instr ($5, $1, $3);
 630               else if (is_group2 ($1) && is_group1 ($3))
 631                 $$ = bfin_gen_multi_instr ($5, $3, $1);
 632               else
 633                 return yyerror ("Wrong 16 bit instructions groups, slot 1 and slot 2 must be 16-bit instrution group");
 634             }
 635           else
 636             error ("\nIllegal Multi Issue Construct, at least any one of the slot must be DSP32 instruction group\n");
 637         }
 638
 639         | asm_1 DOUBLE_BAR asm_1 SEMICOLON
 640         {
 641           if (($1->value & 0xf800) == 0xc000)
 642             {
 643               if (is_group1 ($3))
 644                 $$ = bfin_gen_multi_instr ($1, $3, 0);
 645               else if (is_group2 ($3))
 646                 $$ = bfin_gen_multi_instr ($1, 0, $3);
 647               else
 648                 return yyerror ("Wrong 16 bit instructions groups, slot 2 must be the 16-bit instruction group");
 649             }
 650           else if (($3->value & 0xf800) == 0xc000)
 651             {
 652               if (is_group1 ($1))
 653                 $$ = bfin_gen_multi_instr ($3, $1, 0);
 654               else if (is_group2 ($1))
 655                 $$ = bfin_gen_multi_instr ($3, 0, $1);
 656               else
 657                 return yyerror ("Wrong 16 bit instructions groups, slot 1 must be the 16-bit instruction group");
 658             }
 659           else if (is_group1 ($1) && is_group2 ($3))
 660               $$ = bfin_gen_multi_instr (0, $1, $3);
 661           else if (is_group2 ($1) && is_group1 ($3))
 662             $$ = bfin_gen_multi_instr (0, $3, $1);
 663           else
 664             return yyerror ("Wrong 16 bit instructions groups, slot 1 and slot 2 must be the 16-bit instruction group");
 665         }
 666         | error
 667         {
 668         $$ = 0;
 669         yyerror ("");
 670         yyerrok;
 671         }
 672         ;
 673
 674 /* DSPMAC.  */
 675
 676 asm_1:
 677         MNOP
 678         {
 679           $$ = DSP32MAC (3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
 680         }
 681         | assign_macfunc opt_mode
 682         {
 683           int op0, op1;
 684           int w0 = 0, w1 = 0;
 685           int h00, h10, h01, h11;
 686
 687           if (check_macfunc_option (&$1, &$2) < 0)
 688             return yyerror ("bad option");
 689
 690           if ($1.n == 0)
 691             {
 692               if ($2.MM)
 693                 return yyerror ("(m) not allowed with a0 unit");
 694               op1 = 3;
 695               op0 = $1.op;
 696               w1 = 0;
 697               w0 = $1.w;
 698               h00 = IS_H ($1.s0);
 699               h10 = IS_H ($1.s1);
 700               h01 = h11 = 0;
 701             }
 702           else
 703             {
 704               op1 = $1.op;
 705               op0 = 3;
 706               w1 = $1.w;
 707               w0 = 0;
 708               h00 = h10 = 0;
 709               h01 = IS_H ($1.s0);
 710               h11 = IS_H ($1.s1);
 711             }
 712           $$ = DSP32MAC (op1, $2.MM, $2.mod, w1, $1.P, h01, h11, h00, h10,
 713                          &$1.dst, op0, &$1.s0, &$1.s1, w0);
 714         }
 715
 716
 717 /* VECTOR MACs.  */
 718
 719         | assign_macfunc opt_mode COMMA assign_macfunc opt_mode
 720         {
 721           Register *dst;
 722
 723           if (check_macfuncs (&$1, &$2, &$4, &$5) < 0)
 724             return -1;
 725           notethat ("assign_macfunc (.), assign_macfunc (.)\n");
 726
 727           if ($1.w)
 728             dst = &$1.dst;
 729           else
 730             dst = &$4.dst;
 731
 732           $$ = DSP32MAC ($1.op, $2.MM, $5.mod, $1.w, $1.P,
 733                          IS_H ($1.s0),  IS_H ($1.s1), IS_H ($4.s0), IS_H ($4.s1),
 734                          dst, $4.op, &$1.s0, &$1.s1, $4.w);
 735         }
 736
 737 /* DSPALU.  */
 738
 739         | DISALGNEXCPT
 740         {
 741           notethat ("dsp32alu: DISALGNEXCPT\n");
 742           $$ = DSP32ALU (18, 0, 0, 0, 0, 0, 0, 0, 3);
 743         }
 744         | REG ASSIGN LPAREN a_plusassign REG_A RPAREN
 745         {
 746           if (IS_DREG ($1) && !IS_A1 ($4) && IS_A1 ($5))
 747             {
 748               notethat ("dsp32alu: dregs = ( A0 += A1 )\n");
 749               $$ = DSP32ALU (11, 0, 0, &$1, 0, 0, 0, 0, 0);
 750             }
 751           else
 752             return yyerror ("Register mismatch");
 753         }
 754         | HALF_REG ASSIGN LPAREN a_plusassign REG_A RPAREN
 755         {
 756           if (!IS_A1 ($4) && IS_A1 ($5))
 757             {
 758               notethat ("dsp32alu: dregs_half = ( A0 += A1 )\n");
 759               $$ = DSP32ALU (11, IS_H ($1), 0, &$1, 0, 0, 0, 0, 1);
 760             }
 761           else
 762             return yyerror ("Register mismatch");
 763         }
 764         | A_ZERO_DOT_H ASSIGN HALF_REG
 765         {
 766           notethat ("dsp32alu: A_ZERO_DOT_H = dregs_hi\n");
 767           $$ = DSP32ALU (9, IS_H ($3), 0, 0, &$3, 0, 0, 0, 0);
 768         }
 769         | A_ONE_DOT_H ASSIGN HALF_REG
 770         {
 771           notethat ("dsp32alu: A_ZERO_DOT_H = dregs_hi\n");
 772           $$ = DSP32ALU (9, IS_H ($3), 0, 0, &$3, 0, 0, 0, 2);
 773         }
 774         | LPAREN REG COMMA REG RPAREN ASSIGN BYTEOP16P LPAREN REG
 775           COLON expr COMMA REG COLON expr RPAREN aligndir
 776         {
 777           if (!IS_DREG ($2) || !IS_DREG ($4))
 778             return yyerror ("Dregs expected");
 779           else if (!valid_dreg_pair (&$9, $11))
 780             return yyerror ("Bad dreg pair");
 781           else if (!valid_dreg_pair (&$13, $15))
 782             return yyerror ("Bad dreg pair");
 783           else
 784             {
 785               notethat ("dsp32alu: (dregs , dregs ) = BYTEOP16P (dregs_pair , dregs_pair ) (half)\n");
 786               $$ = DSP32ALU (21, 0, &$2, &$4, &$9, &$13, $17.r0, 0, 0);
 787             }
 788         }
 789
 790         | LPAREN REG COMMA REG RPAREN ASSIGN BYTEOP16M LPAREN REG COLON expr COMMA
 791           REG COLON expr RPAREN aligndir
 792         {
 793           if (!IS_DREG ($2) || !IS_DREG($4))
 794             return yyerror ("Dregs expected");
 795           else if (!valid_dreg_pair (&$9, $11))
 796             return yyerror ("Bad dreg pair");
 797           else if (!valid_dreg_pair (&$13, $15))
 798             return yyerror ("Bad dreg pair");
 799           else
 800             {
 801               notethat ("dsp32alu: (dregs , dregs ) = BYTEOP16M (dregs_pair , dregs_pair ) (aligndir)\n");
 802               $$ = DSP32ALU (21, 0, &$2, &$4, &$9, &$13, $17.r0, 0, 1);
 803             }
 804         }
 805
 806         | LPAREN REG COMMA REG RPAREN ASSIGN BYTEUNPACK REG COLON expr aligndir
 807         {
 808           if (!IS_DREG ($2) || !IS_DREG ($4))
 809             return yyerror ("Dregs expected");
 810           else if (!valid_dreg_pair (&$8, $10))
 811             return yyerror ("Bad dreg pair");
 812           else
 813             {
 814               notethat ("dsp32alu: (dregs , dregs ) = BYTEUNPACK dregs_pair (aligndir)\n");
 815               $$ = DSP32ALU (24, 0, &$2, &$4, &$8, 0, $11.r0, 0, 1);
 816             }
 817         }
 818         | LPAREN REG COMMA REG RPAREN ASSIGN SEARCH REG LPAREN searchmod RPAREN
 819         {
 820           if (IS_DREG ($2) && IS_DREG ($4) && IS_DREG ($8))
 821             {
 822               notethat ("dsp32alu: (dregs , dregs ) = SEARCH dregs (searchmod)\n");
 823               $$ = DSP32ALU (13, 0, &$2, &$4, &$8, 0, 0, 0, $10.r0);
 824             }
 825           else
 826             return yyerror ("Register mismatch");
 827         }
 828         | REG ASSIGN A_ONE_DOT_L PLUS A_ONE_DOT_H COMMA
 829           REG ASSIGN A_ZERO_DOT_L PLUS A_ZERO_DOT_H
 830         {
 831           if (IS_DREG ($1) && IS_DREG ($7))
 832             {
 833               notethat ("dsp32alu: dregs = A1.l + A1.h, dregs = A0.l + A0.h  \n");
 834               $$ = DSP32ALU (12, 0, &$1, &$7, 0, 0, 0, 0, 1);
 835             }
 836           else
 837             return yyerror ("Register mismatch");
 838         }
 839
 840
 841         | REG ASSIGN REG_A PLUS REG_A COMMA REG ASSIGN REG_A MINUS REG_A amod1
 842         {
 843           if (IS_DREG ($1) && IS_DREG ($7) && !REG_SAME ($3, $5)
 844               && IS_A1 ($9) && !IS_A1 ($11))
 845             {
 846               notethat ("dsp32alu: dregs = A1 + A0 , dregs = A1 - A0 (amod1)\n");
 847               $$ = DSP32ALU (17, 0, &$1, &$7, 0, 0, $12.s0, $12.x0, 0);
 848
 849             }
 850           else if (IS_DREG ($1) && IS_DREG ($7) && !REG_SAME ($3, $5)
 851                    && !IS_A1 ($9) && IS_A1 ($11))
 852             {
 853               notethat ("dsp32alu: dregs = A0 + A1 , dregs = A0 - A1 (amod1)\n");
 854               $$ = DSP32ALU (17, 0, &$1, &$7, 0, 0, $12.s0, $12.x0, 1);
 855             }
 856           else
 857             return yyerror ("Register mismatch");
 858         }
 859
 860         | REG ASSIGN REG plus_minus REG COMMA REG ASSIGN REG plus_minus REG amod1
 861         {
 862           if ($4.r0 == $10.r0)
 863             return yyerror ("Operators must differ");
 864
 865           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5)
 866               && REG_SAME ($3, $9) && REG_SAME ($5, $11))
 867             {
 868               notethat ("dsp32alu: dregs = dregs + dregs,"
 869                        "dregs = dregs - dregs (amod1)\n");
 870               $$ = DSP32ALU (4, 0, &$1, &$7, &$3, &$5, $12.s0, $12.x0, 2);
 871             }
 872           else
 873             return yyerror ("Register mismatch");
 874         }
 875
 876 /*  Bar Operations.  */
 877
 878         | REG ASSIGN REG op_bar_op REG COMMA REG ASSIGN REG op_bar_op REG amod2
 879         {
 880           if (!REG_SAME ($3, $9) || !REG_SAME ($5, $11))
 881             return yyerror ("Differing source registers");
 882
 883           if (!IS_DREG ($1) || !IS_DREG ($3) || !IS_DREG ($5) || !IS_DREG ($7))
 884             return yyerror ("Dregs expected");
 885
 886
 887           if ($4.r0 == 1 && $10.r0 == 2)
 888             {
 889               notethat ("dsp32alu:  dregs = dregs .|. dregs , dregs = dregs .|. dregs (amod2)\n");
 890               $$ = DSP32ALU (1, 1, &$1, &$7, &$3, &$5, $12.s0, $12.x0, $12.r0);
 891             }
 892           else if ($4.r0 == 0 && $10.r0 == 3)
 893             {
 894               notethat ("dsp32alu:  dregs = dregs .|. dregs , dregs = dregs .|. dregs (amod2)\n");
 895               $$ = DSP32ALU (1, 0, &$1, &$7, &$3, &$5, $12.s0, $12.x0, $12.r0);
 896             }
 897           else
 898             return yyerror ("Bar operand mismatch");
 899         }
 900
 901         | REG ASSIGN ABS REG vmod
 902         {
 903           int op;
 904
 905           if (IS_DREG ($1) && IS_DREG ($4))
 906             {
 907               if ($5.r0)
 908                 {
 909                   notethat ("dsp32alu: dregs = ABS dregs (v)\n");
 910                   op = 6;
 911                 }
 912               else
 913                 {
 914                   /* Vector version of ABS.  */
 915                   notethat ("dsp32alu: dregs = ABS dregs\n");
 916                   op = 7;
 917                 }
 918               $$ = DSP32ALU (op, 0, 0, &$1, &$4, 0, 0, 0, 2);
 919             }
 920           else
 921             return yyerror ("Dregs expected");
 922         }
 923         | a_assign ABS REG_A
 924         {
 925           notethat ("dsp32alu: Ax = ABS Ax\n");
 926           $$ = DSP32ALU (16, IS_A1 ($1), 0, 0, 0, 0, 0, 0, IS_A1 ($3));
 927         }
 928         | A_ZERO_DOT_L ASSIGN HALF_REG
 929         {
 930           if (IS_DREG_L ($3))
 931             {
 932               notethat ("dsp32alu: A0.l = reg_half\n");
 933               $$ = DSP32ALU (9, IS_H ($3), 0, 0, &$3, 0, 0, 0, 0);
 934             }
 935           else
 936             return yyerror ("A0.l = Rx.l expected");
 937         }
 938         | A_ONE_DOT_L ASSIGN HALF_REG
 939         {
 940           if (IS_DREG_L ($3))
 941             {
 942               notethat ("dsp32alu: A1.l = reg_half\n");
 943               $$ = DSP32ALU (9, IS_H ($3), 0, 0, &$3, 0, 0, 0, 2);
 944             }
 945           else
 946             return yyerror ("A1.l = Rx.l expected");
 947         }
 948
 949         | REG ASSIGN c_align LPAREN REG COMMA REG RPAREN
 950         {
 951           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
 952             {
 953               notethat ("dsp32shift: dregs = ALIGN8 (dregs , dregs )\n");
 954               $$ = DSP32SHIFT (13, &$1, &$7, &$5, $3.r0, 0);
 955             }
 956           else
 957             return yyerror ("Dregs expected");
 958         }
 959
 960         | REG ASSIGN BYTEOP1P LPAREN REG COLON expr COMMA REG COLON expr RPAREN byteop_mod
 961         {
 962           if (!IS_DREG ($1))
 963             return yyerror ("Dregs expected");
 964           else if (!valid_dreg_pair (&$5, $7))
 965             return yyerror ("Bad dreg pair");
 966           else if (!valid_dreg_pair (&$9, $11))
 967             return yyerror ("Bad dreg pair");
 968           else
 969             {
 970               notethat ("dsp32alu: dregs = BYTEOP1P (dregs_pair , dregs_pair ) (T)\n");
 971               $$ = DSP32ALU (20, 0, 0, &$1, &$5, &$9, $13.s0, 0, $13.r0);
 972             }
 973         }
 974         | REG ASSIGN BYTEOP1P LPAREN REG COLON expr COMMA REG COLON expr RPAREN
 975         {
 976           if (!IS_DREG ($1))
 977             return yyerror ("Dregs expected");
 978           else if (!valid_dreg_pair (&$5, $7))
 979             return yyerror ("Bad dreg pair");
 980           else if (!valid_dreg_pair (&$9, $11))
 981             return yyerror ("Bad dreg pair");
 982           else
 983             {
 984               notethat ("dsp32alu: dregs = BYTEOP1P (dregs_pair , dregs_pair ) (T)\n");
 985               $$ = DSP32ALU (20, 0, 0, &$1, &$5, &$9, 0, 0, 0);
 986             }
 987         }
 988
 989         | REG ASSIGN BYTEOP2P LPAREN REG COLON expr COMMA REG COLON expr RPAREN
 990           rnd_op
 991         {
 992           if (!IS_DREG ($1))
 993             return yyerror ("Dregs expected");
 994           else if (!valid_dreg_pair (&$5, $7))
 995             return yyerror ("Bad dreg pair");
 996           else if (!valid_dreg_pair (&$9, $11))
 997             return yyerror ("Bad dreg pair");
 998           else
 999             {
1000               notethat ("dsp32alu: dregs = BYTEOP2P (dregs_pair , dregs_pair ) (rnd_op)\n");
1001               $$ = DSP32ALU (22, $13.r0, 0, &$1, &$5, &$9, $13.s0, $13.x0, $13.aop);
1002             }
1003         }
1004
1005         | REG ASSIGN BYTEOP2M LPAREN REG COLON expr COMMA REG COLON expr RPAREN
1006           rnd_op
1007         {
1008           if (!IS_DREG ($1))
1009             return yyerror ("Dregs expected");
1010           else if (!valid_dreg_pair (&$5, $7))
1011             return yyerror ("Bad dreg pair");
1012           else if (!valid_dreg_pair (&$9, $11))
1013             return yyerror ("Bad dreg pair");
1014           else
1015             {
1016               notethat ("dsp32alu: dregs = BYTEOP2P (dregs_pair , dregs_pair ) (rnd_op)\n");
1017               $$ = DSP32ALU (22, $13.r0, 0, &$1, &$5, &$9, $13.s0, 0, $13.x0);
1018             }
1019         }
1020
1021         | REG ASSIGN BYTEOP3P LPAREN REG COLON expr COMMA REG COLON expr RPAREN
1022           b3_op
1023         {
1024           if (!IS_DREG ($1))
1025             return yyerror ("Dregs expected");
1026           else if (!valid_dreg_pair (&$5, $7))
1027             return yyerror ("Bad dreg pair");
1028           else if (!valid_dreg_pair (&$9, $11))
1029             return yyerror ("Bad dreg pair");
1030           else
1031             {
1032               notethat ("dsp32alu: dregs = BYTEOP3P (dregs_pair , dregs_pair ) (b3_op)\n");
1033               $$ = DSP32ALU (23, $13.x0, 0, &$1, &$5, &$9, $13.s0, 0, 0);
1034             }
1035         }
1036
1037         | REG ASSIGN BYTEPACK LPAREN REG COMMA REG RPAREN
1038         {
1039           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
1040             {
1041               notethat ("dsp32alu: dregs = BYTEPACK (dregs , dregs )\n");
1042               $$ = DSP32ALU (24, 0, 0, &$1, &$5, &$7, 0, 0, 0);
1043             }
1044           else
1045             return yyerror ("Dregs expected");
1046         }
1047
1048         | HALF_REG ASSIGN HALF_REG ASSIGN SIGN LPAREN HALF_REG RPAREN STAR
1049           HALF_REG PLUS SIGN LPAREN HALF_REG RPAREN STAR HALF_REG
1050         {
1051           if (IS_HCOMPL ($1, $3) && IS_HCOMPL ($7, $14) && IS_HCOMPL ($10, $17))
1052             {
1053               notethat ("dsp32alu:      dregs_hi = dregs_lo ="
1054                        "SIGN (dregs_hi) * dregs_hi + "
1055                        "SIGN (dregs_lo) * dregs_lo \n");
1056
1057                 $$ = DSP32ALU (12, 0, 0, &$1, &$7, &$10, 0, 0, 0);
1058             }
1059           else
1060             return yyerror ("Dregs expected");
1061         }
1062         | REG ASSIGN REG plus_minus REG amod1
1063         {
1064           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1065             {
1066               if ($6.aop == 0)
1067                 {
1068                   /* No saturation flag specified, generate the 16 bit variant.  */
1069                   notethat ("COMP3op: dregs = dregs +- dregs\n");
1070                   $$ = COMP3OP (&$1, &$3, &$5, $4.r0);
1071                 }
1072               else
1073                 {
1074                  /* Saturation flag specified, generate the 32 bit variant.  */
1075                  notethat ("dsp32alu: dregs = dregs +- dregs (amod1)\n");
1076                  $$ = DSP32ALU (4, 0, 0, &$1, &$3, &$5, $6.s0, $6.x0, $4.r0);
1077                 }
1078             }
1079           else
1080             if (IS_PREG ($1) && IS_PREG ($3) && IS_PREG ($5) && $4.r0 == 0)
1081               {
1082                 notethat ("COMP3op: pregs = pregs + pregs\n");
1083                 $$ = COMP3OP (&$1, &$3, &$5, 5);
1084               }
1085             else
1086               return yyerror ("Dregs expected");
1087         }
1088         | REG ASSIGN min_max LPAREN REG COMMA REG RPAREN vmod
1089         {
1090           int op;
1091
1092           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
1093             {
1094               if ($9.r0)
1095                 op = 6;
1096               else
1097                 op = 7;
1098
1099               notethat ("dsp32alu: dregs = {MIN|MAX} (dregs, dregs)\n");
1100               $$ = DSP32ALU (op, 0, 0, &$1, &$5, &$7, 0, 0, $3.r0);
1101             }
1102           else
1103             return yyerror ("Dregs expected");
1104         }
1105
1106         | a_assign MINUS REG_A
1107         {
1108           notethat ("dsp32alu: Ax = - Ax\n");
1109           $$ = DSP32ALU (14, IS_A1 ($1), 0, 0, 0, 0, 0, 0, IS_A1 ($3));
1110         }
1111         | HALF_REG ASSIGN HALF_REG plus_minus HALF_REG amod1
1112         {
1113           notethat ("dsp32alu: dregs_lo = dregs_lo +- dregs_lo (amod1)\n");
1114           $$ = DSP32ALU (2 | $4.r0, IS_H ($1), 0, &$1, &$3, &$5,
1115                          $6.s0, $6.x0, HL2 ($3, $5));
1116         }
1117         | a_assign a_assign expr
1118         {
1119           if (EXPR_VALUE ($3) == 0 && !REG_SAME ($1, $2))
1120             {
1121               notethat ("dsp32alu: A1 = A0 = 0\n");
1122               $$ = DSP32ALU (8, 0, 0, 0, 0, 0, 0, 0, 2);
1123             }
1124           else
1125             return yyerror ("Bad value, 0 expected");
1126         }
1127
1128         /* Saturating.  */
1129         | a_assign REG_A LPAREN S RPAREN
1130         {
1131           if (REG_SAME ($1, $2))
1132             {
1133               notethat ("dsp32alu: Ax = Ax (S)\n");
1134               $$ = DSP32ALU (8, 0, 0, 0, 0, 0, 1, 0, IS_A1 ($1));
1135             }
1136           else
1137             return yyerror ("Registers must be equal");
1138         }
1139
1140         | HALF_REG ASSIGN REG LPAREN RND RPAREN
1141         {
1142           if (IS_DREG ($3))
1143             {
1144               notethat ("dsp32alu: dregs_half = dregs (RND)\n");
1145               $$ = DSP32ALU (12, IS_H ($1), 0, &$1, &$3, 0, 0, 0, 3);
1146             }
1147           else
1148             return yyerror ("Dregs expected");
1149         }
1150
1151         | HALF_REG ASSIGN REG plus_minus REG LPAREN RND12 RPAREN
1152         {
1153           if (IS_DREG ($3) && IS_DREG ($5))
1154             {
1155               notethat ("dsp32alu: dregs_half = dregs (+-) dregs (RND12)\n");
1156               $$ = DSP32ALU (5, IS_H ($1), 0, &$1, &$3, &$5, 0, 0, $4.r0);
1157             }
1158           else
1159             return yyerror ("Dregs expected");
1160         }
1161
1162         | HALF_REG ASSIGN REG plus_minus REG LPAREN RND20 RPAREN
1163         {
1164           if (IS_DREG ($3) && IS_DREG ($5))
1165             {
1166               notethat ("dsp32alu: dregs_half = dregs -+ dregs (RND20)\n");
1167               $$ = DSP32ALU (5, IS_H ($1), 0, &$1, &$3, &$5, 0, 1, $4.r0 | 2);
1168             }
1169           else
1170             return yyerror ("Dregs expected");
1171         }
1172
1173         | a_assign REG_A
1174         {
1175           if (!REG_SAME ($1, $2))
1176             {
1177               notethat ("dsp32alu: An = Am\n");
1178               $$ = DSP32ALU (8, 0, 0, 0, 0, 0, IS_A1 ($1), 0, 3);
1179             }
1180           else
1181             return yyerror ("Accu reg arguments must differ");
1182         }
1183
1184         | a_assign REG
1185         {
1186           if (IS_DREG ($2))
1187             {
1188               notethat ("dsp32alu: An = dregs\n");
1189               $$ = DSP32ALU (9, 0, 0, 0, &$2, 0, 1, 0, IS_A1 ($1) << 1);
1190             }
1191           else
1192             return yyerror ("Dregs expected");
1193         }
1194
1195         | REG ASSIGN HALF_REG xpmod
1196         {
1197           if (!IS_H ($3))
1198             {
1199               if ($1.regno == REG_A0x && IS_DREG ($3))
1200                 {
1201                   notethat ("dsp32alu: A0.x = dregs_lo\n");
1202                   $$ = DSP32ALU (9, 0, 0, 0, &$3, 0, 0, 0, 1);
1203                 }
1204               else if ($1.regno == REG_A1x && IS_DREG ($3))
1205                 {
1206                   notethat ("dsp32alu: A1.x = dregs_lo\n");
1207                   $$ = DSP32ALU (9, 0, 0, 0, &$3, 0, 0, 0, 3);
1208                 }
1209               else if (IS_DREG ($1) && IS_DREG ($3))
1210                 {
1211                   notethat ("ALU2op: dregs = dregs_lo\n");
1212                   $$ = ALU2OP (&$1, &$3, 10 | ($4.r0 ? 0: 1));
1213                 }
1214               else
1215                 return yyerror ("Register mismatch");
1216             }
1217           else
1218             return yyerror ("Low reg expected");
1219         }
1220
1221         | HALF_REG ASSIGN expr
1222         {
1223           notethat ("LDIMMhalf: pregs_half = imm16\n");
1224
1225           if (!IS_DREG ($1) && !IS_PREG ($1) && !IS_IREG ($1)
1226               && !IS_MREG ($1) && !IS_BREG ($1) && !IS_LREG ($1))
1227             return yyerror ("Wrong register for load immediate");
1228
1229           if (!IS_IMM ($3, 16) && !IS_UIMM ($3, 16))
1230             return yyerror ("Constant out of range");
1231
1232           $$ = LDIMMHALF_R (&$1, IS_H ($1), 0, 0, $3);
1233         }
1234
1235         | a_assign expr
1236         {
1237           notethat ("dsp32alu: An = 0\n");
1238
1239           if (imm7 ($2) != 0)
1240             return yyerror ("0 expected");
1241
1242           $$ = DSP32ALU (8, 0, 0, 0, 0, 0, 0, 0, IS_A1 ($1));
1243         }
1244
1245         | REG ASSIGN expr xpmod1
1246         {
1247           if (!IS_DREG ($1) && !IS_PREG ($1) && !IS_IREG ($1)
1248               && !IS_MREG ($1) && !IS_BREG ($1) && !IS_LREG ($1))
1249             return yyerror ("Wrong register for load immediate");
1250
1251           if ($4.r0 == 0)
1252             {
1253               /* 7 bit immediate value if possible.
1254                  We will check for that constant value for efficiency
1255                  If it goes to reloc, it will be 16 bit.  */
1256               if (IS_CONST ($3) && IS_IMM ($3, 7) && IS_DREG ($1))
1257                 {
1258                   notethat ("COMPI2opD: dregs = imm7 (x) \n");
1259                   $$ = COMPI2OPD (&$1, imm7 ($3), 0);
1260                 }
1261               else if (IS_CONST ($3) && IS_IMM ($3, 7) && IS_PREG ($1))
1262                 {
1263                   notethat ("COMPI2opP: pregs = imm7 (x)\n");
1264                   $$ = COMPI2OPP (&$1, imm7 ($3), 0);
1265                 }
1266               else
1267                 {
1268                   if (IS_CONST ($3) && !IS_IMM ($3, 16))
1269                     return yyerror ("Immediate value out of range");
1270
1271                   notethat ("LDIMMhalf: regs = luimm16 (x)\n");
1272                   /* reg, H, S, Z.   */
1273                   $$ = LDIMMHALF_R5 (&$1, 0, 1, 0, $3);
1274                 }
1275             }
1276           else
1277             {
1278               /* (z) There is no 7 bit zero extended instruction.
1279               If the expr is a relocation, generate it.   */
1280
1281               if (IS_CONST ($3) && !IS_UIMM ($3, 16))
1282                 return yyerror ("Immediate value out of range");
1283
1284               notethat ("LDIMMhalf: regs = luimm16 (x)\n");
1285               /* reg, H, S, Z.  */
1286               $$ = LDIMMHALF_R5 (&$1, 0, 0, 1, $3);
1287             }
1288         }
1289
1290         | HALF_REG ASSIGN REG
1291         {
1292           if (IS_H ($1))
1293             return yyerror ("Low reg expected");
1294
1295           if (IS_DREG ($1) && $3.regno == REG_A0x)
1296             {
1297               notethat ("dsp32alu: dregs_lo = A0.x\n");
1298               $$ = DSP32ALU (10, 0, 0, &$1, 0, 0, 0, 0, 0);
1299             }
1300           else if (IS_DREG ($1) && $3.regno == REG_A1x)
1301             {
1302               notethat ("dsp32alu: dregs_lo = A1.x\n");
1303               $$ = DSP32ALU (10, 0, 0, &$1, 0, 0, 0, 0, 1);
1304             }
1305           else
1306             return yyerror ("Register mismatch");
1307         }
1308
1309         | REG ASSIGN REG op_bar_op REG amod0
1310         {
1311           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1312             {
1313               notethat ("dsp32alu: dregs = dregs .|. dregs (amod0)\n");
1314               $$ = DSP32ALU (0, 0, 0, &$1, &$3, &$5, $6.s0, $6.x0, $4.r0);
1315             }
1316           else
1317             return yyerror ("Register mismatch");
1318         }
1319
1320         | REG ASSIGN BYTE_DREG xpmod
1321         {
1322           if (IS_DREG ($1) && IS_DREG ($3))
1323             {
1324               notethat ("ALU2op: dregs = dregs_byte\n");
1325               $$ = ALU2OP (&$1, &$3, 12 | ($4.r0 ? 0: 1));
1326             }
1327           else
1328             return yyerror ("Register mismatch");
1329         }
1330
1331         | a_assign ABS REG_A COMMA a_assign ABS REG_A
1332         {
1333           if (REG_SAME ($1, $3) && REG_SAME ($5, $7) && !REG_SAME ($1, $5))
1334             {
1335               notethat ("dsp32alu: A1 = ABS A1 , A0 = ABS A0\n");
1336               $$ = DSP32ALU (16, 0, 0, 0, 0, 0, 0, 0, 3);
1337             }
1338           else
1339             return yyerror ("Register mismatch");
1340         }
1341
1342         | a_assign MINUS REG_A COMMA a_assign MINUS REG_A
1343         {
1344           if (REG_SAME ($1, $3) && REG_SAME ($5, $7) && !REG_SAME ($1, $5))
1345             {
1346               notethat ("dsp32alu: A1 = - A1 , A0 = - A0\n");
1347               $$ = DSP32ALU (14, 0, 0, 0, 0, 0, 0, 0, 3);
1348             }
1349           else
1350             return yyerror ("Register mismatch");
1351         }
1352
1353         | a_minusassign REG_A w32_or_nothing
1354         {
1355           if (!IS_A1 ($1) && IS_A1 ($2))
1356             {
1357               notethat ("dsp32alu: A0 -= A1\n");
1358               $$ = DSP32ALU (11, 0, 0, 0, 0, 0, $3.r0, 0, 3);
1359             }
1360           else
1361             return yyerror ("Register mismatch");
1362         }
1363
1364         | REG _MINUS_ASSIGN expr
1365         {
1366           if (IS_IREG ($1) && EXPR_VALUE ($3) == 4)
1367             {
1368               notethat ("dagMODik: iregs -= 4\n");
1369               $$ = DAGMODIK (&$1, 3);
1370             }
1371           else if (IS_IREG ($1) && EXPR_VALUE ($3) == 2)
1372             {
1373               notethat ("dagMODik: iregs -= 2\n");
1374               $$ = DAGMODIK (&$1, 1);
1375             }
1376           else
1377             return yyerror ("Register or value mismatch");
1378         }
1379
1380         | REG _PLUS_ASSIGN REG LPAREN BREV RPAREN
1381         {
1382           if (IS_IREG ($1) && IS_MREG ($3))
1383             {
1384               notethat ("dagMODim: iregs += mregs (opt_brev)\n");
1385               /* i, m, op, br.  */
1386               $$ = DAGMODIM (&$1, &$3, 0, 1);
1387             }
1388           else if (IS_PREG ($1) && IS_PREG ($3))
1389             {
1390               notethat ("PTR2op: pregs += pregs (BREV )\n");
1391               $$ = PTR2OP (&$1, &$3, 5);
1392             }
1393           else
1394             return yyerror ("Register mismatch");
1395         }
1396
1397         | REG _MINUS_ASSIGN REG
1398         {
1399           if (IS_IREG ($1) && IS_MREG ($3))
1400             {
1401               notethat ("dagMODim: iregs -= mregs\n");
1402               $$ = DAGMODIM (&$1, &$3, 1, 0);
1403             }
1404           else if (IS_PREG ($1) && IS_PREG ($3))
1405             {
1406               notethat ("PTR2op: pregs -= pregs\n");
1407               $$ = PTR2OP (&$1, &$3, 0);
1408             }
1409           else
1410             return yyerror ("Register mismatch");
1411         }
1412
1413         | REG_A _PLUS_ASSIGN REG_A w32_or_nothing
1414         {
1415           if (!IS_A1 ($1) && IS_A1 ($3))
1416             {
1417               notethat ("dsp32alu: A0 += A1 (W32)\n");
1418               $$ = DSP32ALU (11, 0, 0, 0, 0, 0, $4.r0, 0, 2);
1419             }
1420           else
1421             return yyerror ("Register mismatch");
1422         }
1423
1424         | REG _PLUS_ASSIGN REG
1425         {
1426           if (IS_IREG ($1) && IS_MREG ($3))
1427             {
1428               notethat ("dagMODim: iregs += mregs\n");
1429               $$ = DAGMODIM (&$1, &$3, 0, 0);
1430             }
1431           else
1432             return yyerror ("iregs += mregs expected");
1433         }
1434
1435         | REG _PLUS_ASSIGN expr
1436         {
1437           if (IS_IREG ($1))
1438             {
1439               if (EXPR_VALUE ($3) == 4)
1440                 {
1441                   notethat ("dagMODik: iregs += 4\n");
1442                   $$ = DAGMODIK (&$1, 2);
1443                 }
1444               else if (EXPR_VALUE ($3) == 2)
1445                 {
1446                   notethat ("dagMODik: iregs += 2\n");
1447                   $$ = DAGMODIK (&$1, 0);
1448                 }
1449               else
1450                 return yyerror ("iregs += [ 2 | 4 ");
1451             }
1452           else if (IS_PREG ($1) && IS_IMM ($3, 7))
1453             {
1454               notethat ("COMPI2opP: pregs += imm7\n");
1455               $$ = COMPI2OPP (&$1, imm7 ($3), 1);
1456             }
1457           else if (IS_DREG ($1) && IS_IMM ($3, 7))
1458             {
1459               notethat ("COMPI2opD: dregs += imm7\n");
1460               $$ = COMPI2OPD (&$1, imm7 ($3), 1);
1461             }
1462           else if ((IS_DREG ($1) || IS_PREG ($1)) && IS_CONST ($3))
1463             return yyerror ("Immediate value out of range");
1464           else
1465             return yyerror ("Register mismatch");
1466         }
1467
1468         | REG _STAR_ASSIGN REG
1469         {
1470           if (IS_DREG ($1) && IS_DREG ($3))
1471             {
1472               notethat ("ALU2op: dregs *= dregs\n");
1473               $$ = ALU2OP (&$1, &$3, 3);
1474             }
1475           else
1476             return yyerror ("Register mismatch");
1477         }
1478
1479         | SAA LPAREN REG COLON expr COMMA REG COLON expr RPAREN aligndir
1480         {
1481           if (!valid_dreg_pair (&$3, $5))
1482             return yyerror ("Bad dreg pair");
1483           else if (!valid_dreg_pair (&$7, $9))
1484             return yyerror ("Bad dreg pair");
1485           else
1486             {
1487               notethat ("dsp32alu: SAA (dregs_pair , dregs_pair ) (aligndir)\n");
1488               $$ = DSP32ALU (18, 0, 0, 0, &$3, &$7, $11.r0, 0, 0);
1489             }
1490         }
1491
1492         | a_assign REG_A LPAREN S RPAREN COMMA a_assign REG_A LPAREN S RPAREN
1493         {
1494           if (REG_SAME ($1, $2) && REG_SAME ($7, $8) && !REG_SAME ($1, $7))
1495             {
1496               notethat ("dsp32alu: A1 = A1 (S) , A0 = A0 (S)\n");
1497               $$ = DSP32ALU (8, 0, 0, 0, 0, 0, 1, 0, 2);
1498             }
1499           else
1500             return yyerror ("Register mismatch");
1501         }
1502
1503         | REG ASSIGN LPAREN REG PLUS REG RPAREN LESS_LESS expr
1504         {
1505           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG ($6)
1506               && REG_SAME ($1, $4))
1507             {
1508               if (EXPR_VALUE ($9) == 1)
1509                 {
1510                   notethat ("ALU2op: dregs = (dregs + dregs) << 1\n");
1511                   $$ = ALU2OP (&$1, &$6, 4);
1512                 }
1513               else if (EXPR_VALUE ($9) == 2)
1514                 {
1515                   notethat ("ALU2op: dregs = (dregs + dregs) << 2\n");
1516                   $$ = ALU2OP (&$1, &$6, 5);
1517                 }
1518               else
1519                 return yyerror ("Bad shift value");
1520             }
1521           else if (IS_PREG ($1) && IS_PREG ($4) && IS_PREG ($6)
1522                    && REG_SAME ($1, $4))
1523             {
1524               if (EXPR_VALUE ($9) == 1)
1525                 {
1526                   notethat ("PTR2op: pregs = (pregs + pregs) << 1\n");
1527                   $$ = PTR2OP (&$1, &$6, 6);
1528                 }
1529               else if (EXPR_VALUE ($9) == 2)
1530                 {
1531                   notethat ("PTR2op: pregs = (pregs + pregs) << 2\n");
1532                   $$ = PTR2OP (&$1, &$6, 7);
1533                 }
1534               else
1535                 return yyerror ("Bad shift value");
1536             }
1537           else
1538             return yyerror ("Register mismatch");
1539         }
1540
1541 /*  COMP3 CCFLAG.  */
1542         | REG ASSIGN REG BAR REG
1543         {
1544           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1545             {
1546               notethat ("COMP3op: dregs = dregs | dregs\n");
1547               $$ = COMP3OP (&$1, &$3, &$5, 3);
1548             }
1549           else
1550             return yyerror ("Dregs expected");
1551         }
1552         | REG ASSIGN REG CARET REG
1553         {
1554           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1555             {
1556               notethat ("COMP3op: dregs = dregs ^ dregs\n");
1557               $$ = COMP3OP (&$1, &$3, &$5, 4);
1558             }
1559           else
1560             return yyerror ("Dregs expected");
1561         }
1562         | REG ASSIGN REG PLUS LPAREN REG LESS_LESS expr RPAREN
1563         {
1564           if (IS_PREG ($1) && IS_PREG ($3) && IS_PREG ($6))
1565             {
1566               if (EXPR_VALUE ($8) == 1)
1567                 {
1568                   notethat ("COMP3op: pregs = pregs + (pregs << 1)\n");
1569                   $$ = COMP3OP (&$1, &$3, &$6, 6);
1570                 }
1571               else if (EXPR_VALUE ($8) == 2)
1572                 {
1573                   notethat ("COMP3op: pregs = pregs + (pregs << 2)\n");
1574                   $$ = COMP3OP (&$1, &$3, &$6, 7);
1575                 }
1576               else
1577                   return yyerror ("Bad shift value");
1578             }
1579           else
1580             return yyerror ("Dregs expected");
1581         }
1582         | CCREG ASSIGN REG_A _ASSIGN_ASSIGN REG_A
1583         {
1584           if ($3.regno == REG_A0 && $5.regno == REG_A1)
1585             {
1586               notethat ("CCflag: CC = A0 == A1\n");
1587               $$ = CCFLAG (0, 0, 5, 0, 0);
1588             }
1589           else
1590             return yyerror ("AREGs are in bad order or same");
1591         }
1592         | CCREG ASSIGN REG_A LESS_THAN REG_A
1593         {
1594           if ($3.regno == REG_A0 && $5.regno == REG_A1)
1595             {
1596               notethat ("CCflag: CC = A0 < A1\n");
1597               $$ = CCFLAG (0, 0, 6, 0, 0);
1598             }
1599           else
1600             return yyerror ("AREGs are in bad order or same");
1601         }
1602         | CCREG ASSIGN REG LESS_THAN REG iu_or_nothing
1603         {
1604           if (REG_CLASS($3) == REG_CLASS($5))
1605             {
1606               notethat ("CCflag: CC = dpregs < dpregs\n");
1607               $$ = CCFLAG (&$3, $5.regno & CODE_MASK, $6.r0, 0, IS_PREG ($3) ? 1 : 0);
1608             }
1609           else
1610             return yyerror ("Compare only of same register class");
1611         }
1612         | CCREG ASSIGN REG LESS_THAN expr iu_or_nothing
1613         {
1614           if (($6.r0 == 1 && IS_IMM ($5, 3))
1615               || ($6.r0 == 3 && IS_UIMM ($5, 3)))
1616             {
1617               notethat ("CCflag: CC = dpregs < (u)imm3\n");
1618               $$ = CCFLAG (&$3, imm3 ($5), $6.r0, 1, IS_PREG ($3) ? 1 : 0);
1619             }
1620           else
1621             return yyerror ("Bad constant value");
1622         }
1623         | CCREG ASSIGN REG _ASSIGN_ASSIGN REG
1624         {
1625           if (REG_CLASS($3) == REG_CLASS($5))
1626             {
1627               notethat ("CCflag: CC = dpregs == dpregs\n");
1628               $$ = CCFLAG (&$3, $5.regno & CODE_MASK, 0, 0, IS_PREG ($3) ? 1 : 0);
1629             }
1630           else
1631             return yyerror ("Compare only of same register class");
1632         }
1633         | CCREG ASSIGN REG _ASSIGN_ASSIGN expr
1634         {
1635           if (IS_IMM ($5, 3))
1636             {
1637               notethat ("CCflag: CC = dpregs == imm3\n");
1638               $$ = CCFLAG (&$3, imm3 ($5), 0, 1, IS_PREG ($3) ? 1 : 0);
1639             }
1640           else
1641             return yyerror ("Bad constant range");
1642         }
1643         | CCREG ASSIGN REG_A _LESS_THAN_ASSIGN REG_A
1644         {
1645           if ($3.regno == REG_A0 && $5.regno == REG_A1)
1646             {
1647               notethat ("CCflag: CC = A0 <= A1\n");
1648               $$ = CCFLAG (0, 0, 7, 0, 0);
1649             }
1650           else
1651             return yyerror ("AREGs are in bad order or same");
1652         }
1653         | CCREG ASSIGN REG _LESS_THAN_ASSIGN REG iu_or_nothing
1654         {
1655           if (REG_CLASS($3) == REG_CLASS($5))
1656             {
1657               notethat ("CCflag: CC = pregs <= pregs (..)\n");
1658               $$ = CCFLAG (&$3, $5.regno & CODE_MASK,
1659                            1 + $6.r0, 0, IS_PREG ($3) ? 1 : 0);
1660             }
1661           else
1662             return yyerror ("Compare only of same register class");
1663         }
1664         | CCREG ASSIGN REG _LESS_THAN_ASSIGN expr iu_or_nothing
1665         {
1666           if (($6.r0 == 1 && IS_IMM ($5, 3))
1667               || ($6.r0 == 3 && IS_UIMM ($5, 3)))
1668             {
1669               if (IS_DREG ($3))
1670                 {
1671                   notethat ("CCflag: CC = dregs <= (u)imm3\n");
1672                   /*    x       y     opc     I     G   */
1673                   $$ = CCFLAG (&$3, imm3 ($5), 1 + $6.r0, 1, 0);
1674                 }
1675               else if (IS_PREG ($3))
1676                 {
1677                   notethat ("CCflag: CC = pregs <= (u)imm3\n");
1678                   /*    x       y     opc     I     G   */
1679                   $$ = CCFLAG (&$3, imm3 ($5), 1 + $6.r0, 1, 1);
1680                 }
1681               else
1682                 return yyerror ("Dreg or Preg expected");
1683             }
1684           else
1685             return yyerror ("Bad constant value");
1686         }
1687
1688         | REG ASSIGN REG AMPERSAND REG
1689         {
1690           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1691             {
1692               notethat ("COMP3op: dregs = dregs & dregs\n");
1693               $$ = COMP3OP (&$1, &$3, &$5, 2);
1694             }
1695           else
1696             return yyerror ("Dregs expected");
1697         }
1698
1699         | ccstat
1700         {
1701           notethat ("CC2stat operation\n");
1702           $$ = bfin_gen_cc2stat ($1.r0, $1.x0, $1.s0);
1703         }
1704
1705         | REG ASSIGN REG
1706         {
1707           if (IS_ALLREG ($1) && IS_ALLREG ($3))
1708             {
1709               notethat ("REGMV: allregs = allregs\n");
1710               $$ = bfin_gen_regmv (&$3, &$1);
1711             }
1712           else
1713             return yyerror ("Register mismatch");
1714         }
1715
1716         | CCREG ASSIGN REG
1717         {
1718           if (IS_DREG ($3))
1719             {
1720               notethat ("CC2dreg: CC = dregs\n");
1721               $$ = bfin_gen_cc2dreg (1, &$3);
1722             }
1723           else
1724             return yyerror ("Register mismatch");
1725         }
1726
1727         | REG ASSIGN CCREG
1728         {
1729           if (IS_DREG ($1))
1730             {
1731               notethat ("CC2dreg: dregs = CC\n");
1732               $$ = bfin_gen_cc2dreg (0, &$1);
1733             }
1734           else
1735             return yyerror ("Register mismatch");
1736         }
1737
1738         | CCREG _ASSIGN_BANG CCREG
1739         {
1740           notethat ("CC2dreg: CC =! CC\n");
1741           $$ = bfin_gen_cc2dreg (3, 0);
1742         }
1743
1744 /* DSPMULT.  */
1745
1746         | HALF_REG ASSIGN multiply_halfregs opt_mode
1747         {
1748           notethat ("dsp32mult: dregs_half = multiply_halfregs (opt_mode)\n");
1749
1750           if (!IS_H ($1) && $4.MM)
1751             return yyerror ("(M) not allowed with MAC0");
1752
1753           if ($4.mod != 0 && $4.mod != M_FU && $4.mod != M_IS
1754               && $4.mod != M_IU && $4.mod != M_T && $4.mod != M_TFU
1755               && $4.mod != M_S2RND && $4.mod != M_ISS2 && $4.mod != M_IH)
1756             return yyerror ("bad option.");
1757
1758           if (IS_H ($1))
1759             {
1760               $$ = DSP32MULT (0, $4.MM, $4.mod, 1, 0,
1761                               IS_H ($3.s0), IS_H ($3.s1), 0, 0,
1762                               &$1, 0, &$3.s0, &$3.s1, 0);
1763             }
1764           else
1765             {
1766               $$ = DSP32MULT (0, 0, $4.mod, 0, 0,
1767                               0, 0, IS_H ($3.s0), IS_H ($3.s1),
1768                               &$1, 0, &$3.s0, &$3.s1, 1);
1769             }
1770         }
1771
1772         | REG ASSIGN multiply_halfregs opt_mode
1773         {
1774           /* Odd registers can use (M).  */
1775           if (!IS_DREG ($1))
1776             return yyerror ("Dreg expected");
1777
1778           if (IS_EVEN ($1) && $4.MM)
1779             return yyerror ("(M) not allowed with MAC0");
1780
1781           if ($4.mod != 0 && $4.mod != M_FU && $4.mod != M_IS
1782               && $4.mod != M_S2RND && $4.mod != M_ISS2)
1783             return yyerror ("bad option");
1784
1785           if (!IS_EVEN ($1))
1786             {
1787               notethat ("dsp32mult: dregs = multiply_halfregs (opt_mode)\n");
1788
1789               $$ = DSP32MULT (0, $4.MM, $4.mod, 1, 1,
1790                               IS_H ($3.s0), IS_H ($3.s1), 0, 0,
1791                               &$1, 0, &$3.s0, &$3.s1, 0);
1792             }
1793           else
1794             {
1795               notethat ("dsp32mult: dregs = multiply_halfregs opt_mode\n");
1796               $$ = DSP32MULT (0, 0, $4.mod, 0, 1,
1797                               0, 0, IS_H ($3.s0), IS_H ($3.s1),
1798                               &$1,  0, &$3.s0, &$3.s1, 1);
1799             }
1800         }
1801
1802         | HALF_REG ASSIGN multiply_halfregs opt_mode COMMA
1803           HALF_REG ASSIGN multiply_halfregs opt_mode
1804         {
1805           if (!IS_DREG ($1) || !IS_DREG ($6))
1806             return yyerror ("Dregs expected");
1807
1808           if (!IS_HCOMPL($1, $6))
1809             return yyerror ("Dest registers mismatch");
1810
1811           if (check_multiply_halfregs (&$3, &$8) < 0)
1812             return -1;
1813
1814           if ((!IS_H ($1) && $4.MM)
1815               || (!IS_H ($6) && $9.MM))
1816             return yyerror ("(M) not allowed with MAC0");
1817
1818           notethat ("dsp32mult: dregs_hi = multiply_halfregs mxd_mod, "
1819                     "dregs_lo = multiply_halfregs opt_mode\n");
1820
1821           if (IS_H ($1))
1822             $$ = DSP32MULT (0, $4.MM, $9.mod, 1, 0,
1823                             IS_H ($3.s0), IS_H ($3.s1), IS_H ($8.s0), IS_H ($8.s1),
1824                             &$1, 0, &$3.s0, &$3.s1, 1);
1825           else
1826             $$ = DSP32MULT (0, $9.MM, $9.mod, 1, 0,
1827                             IS_H ($8.s0), IS_H ($8.s1), IS_H ($3.s0), IS_H ($3.s1),
1828                             &$1, 0, &$3.s0, &$3.s1, 1);
1829         }
1830
1831         | REG ASSIGN multiply_halfregs opt_mode COMMA REG ASSIGN multiply_halfregs opt_mode
1832         {
1833           if (!IS_DREG ($1) || !IS_DREG ($6))
1834             return yyerror ("Dregs expected");
1835
1836           if ((IS_EVEN ($1) && $6.regno - $1.regno != 1)
1837               || (IS_EVEN ($6) && $1.regno - $6.regno != 1))
1838             return yyerror ("Dest registers mismatch");
1839
1840           if (check_multiply_halfregs (&$3, &$8) < 0)
1841             return -1;
1842
1843           if ((IS_EVEN ($1) && $4.MM)
1844               || (IS_EVEN ($6) && $9.MM))
1845             return yyerror ("(M) not allowed with MAC0");
1846
1847           notethat ("dsp32mult: dregs = multiply_halfregs mxd_mod, "
1848                    "dregs = multiply_halfregs opt_mode\n");
1849
1850           if (IS_EVEN ($1))
1851             $$ = DSP32MULT (0, $9.MM, $9.mod, 1, 1,
1852                             IS_H ($8.s0), IS_H ($8.s1), IS_H ($3.s0), IS_H ($3.s1),
1853                             &$1, 0, &$3.s0, &$3.s1, 1);
1854           else
1855             $$ = DSP32MULT (0, $4.MM, $9.mod, 1, 1,
1856                             IS_H ($3.s0), IS_H ($3.s1), IS_H ($8.s0), IS_H ($8.s1),
1857                             &$1, 0, &$3.s0, &$3.s1, 1);
1858         }
1859
1860 \f
1861 /* SHIFTs.  */
1862         | a_assign ASHIFT REG_A BY HALF_REG
1863         {
1864           if (!REG_SAME ($1, $3))
1865             return yyerror ("Aregs must be same");
1866
1867           if (IS_DREG ($5) && !IS_H ($5))
1868             {
1869               notethat ("dsp32shift: A0 = ASHIFT A0 BY dregs_lo\n");
1870               $$ = DSP32SHIFT (3, 0, &$5, 0, 0, IS_A1 ($1));
1871             }
1872           else
1873             return yyerror ("Dregs expected");
1874         }
1875
1876         | HALF_REG ASSIGN ASHIFT HALF_REG BY HALF_REG smod
1877         {
1878           if (IS_DREG ($6) && !IS_H ($6))
1879             {
1880               notethat ("dsp32shift: dregs_half = ASHIFT dregs_half BY dregs_lo\n");
1881               $$ = DSP32SHIFT (0, &$1, &$6, &$4, $7.s0, HL2 ($1, $4));
1882             }
1883           else
1884             return yyerror ("Dregs expected");
1885         }
1886
1887         | a_assign REG_A LESS_LESS expr
1888         {
1889           if (!REG_SAME ($1, $2))
1890             return yyerror ("Aregs must be same");
1891
1892           if (IS_UIMM ($4, 5))
1893             {
1894               notethat ("dsp32shiftimm: A0 = A0 << uimm5\n");
1895               $$ = DSP32SHIFTIMM (3, 0, imm5 ($4), 0, 0, IS_A1 ($1));
1896             }
1897           else
1898             return yyerror ("Bad shift value");
1899         }
1900
1901         | REG ASSIGN REG LESS_LESS expr vsmod
1902         {
1903           if (IS_DREG ($1) && IS_DREG ($3) && IS_UIMM ($5, 5))
1904             {
1905               if ($6.r0)
1906                 {
1907                   /*  Vector?  */
1908                   notethat ("dsp32shiftimm: dregs = dregs << expr (V, .)\n");
1909                   $$ = DSP32SHIFTIMM (1, &$1, imm4 ($5), &$3, $6.s0 ? 1 : 2, 0);
1910                 }
1911               else
1912                 {
1913                   notethat ("dsp32shiftimm: dregs =  dregs << uimm5 (.)\n");
1914                   $$ = DSP32SHIFTIMM (2, &$1, imm6 ($5), &$3, $6.s0 ? 1 : 2, 0);
1915                 }
1916             }
1917           else if ($6.s0 == 0 && IS_PREG ($1) && IS_PREG ($3))
1918             {
1919               if (EXPR_VALUE ($5) == 2)
1920                 {
1921                   notethat ("PTR2op: pregs = pregs << 2\n");
1922                   $$ = PTR2OP (&$1, &$3, 1);
1923                 }
1924               else if (EXPR_VALUE ($5) == 1)
1925                 {
1926                   notethat ("COMP3op: pregs = pregs << 1\n");
1927                   $$ = COMP3OP (&$1, &$3, &$3, 5);
1928                 }
1929               else
1930                 return yyerror ("Bad shift value");
1931             }
1932           else
1933             return yyerror ("Bad shift value or register");
1934         }
1935         | HALF_REG ASSIGN HALF_REG LESS_LESS expr
1936         {
1937           if (IS_UIMM ($5, 4))
1938             {
1939               notethat ("dsp32shiftimm: dregs_half = dregs_half << uimm4\n");
1940               $$ = DSP32SHIFTIMM (0x0, &$1, imm5 ($5), &$3, 2, HL2 ($1, $3));
1941             }
1942           else
1943             return yyerror ("Bad shift value");
1944         }
1945         | HALF_REG ASSIGN HALF_REG LESS_LESS expr smod
1946         {
1947           if (IS_UIMM ($5, 4))
1948             {
1949               notethat ("dsp32shiftimm: dregs_half = dregs_half << uimm4\n");
1950               $$ = DSP32SHIFTIMM (0x0, &$1, imm5 ($5), &$3, $6.s0, HL2 ($1, $3));
1951             }
1952           else
1953             return yyerror ("Bad shift value");
1954         }
1955         | REG ASSIGN ASHIFT REG BY HALF_REG vsmod
1956         {
1957           int op;
1958
1959           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG ($6) && !IS_H ($6))
1960             {
1961               if ($7.r0)
1962                 {
1963                   op = 1;
1964                   notethat ("dsp32shift: dregs = ASHIFT dregs BY "
1965                            "dregs_lo (V, .)\n");
1966                 }
1967               else
1968                 {
1969
1970                   op = 2;
1971                   notethat ("dsp32shift: dregs = ASHIFT dregs BY dregs_lo (.)\n");
1972                 }
1973               $$ = DSP32SHIFT (op, &$1, &$6, &$4, $7.s0, 0);
1974             }
1975           else
1976             return yyerror ("Dregs expected");
1977         }
1978
1979 /*  EXPADJ.  */
1980         | HALF_REG ASSIGN EXPADJ LPAREN REG COMMA HALF_REG RPAREN vmod
1981         {
1982           if (IS_DREG_L ($1) && IS_DREG_L ($5) && IS_DREG_L ($7))
1983             {
1984               notethat ("dsp32shift: dregs_lo = EXPADJ (dregs , dregs_lo )\n");
1985               $$ = DSP32SHIFT (7, &$1, &$7, &$5, $9.r0, 0);
1986             }
1987           else
1988             return yyerror ("Bad shift value or register");
1989         }
1990
1991
1992         | HALF_REG ASSIGN EXPADJ LPAREN HALF_REG COMMA HALF_REG RPAREN
1993         {
1994           if (IS_DREG_L ($1) && IS_DREG_L ($5) && IS_DREG_L ($7))
1995             {
1996               notethat ("dsp32shift: dregs_lo = EXPADJ (dregs_lo, dregs_lo)\n");
1997               $$ = DSP32SHIFT (7, &$1, &$7, &$5, 2, 0);
1998             }
1999           else if (IS_DREG_L ($1) && IS_DREG_H ($5) && IS_DREG_L ($7))
2000             {
2001               notethat ("dsp32shift: dregs_lo = EXPADJ (dregs_hi, dregs_lo)\n");
2002               $$ = DSP32SHIFT (7, &$1, &$7, &$5, 3, 0);
2003             }
2004           else
2005             return yyerror ("Bad shift value or register");
2006         }
2007
2008 /* DEPOSIT.  */
2009
2010         | REG ASSIGN DEPOSIT LPAREN REG COMMA REG RPAREN
2011         {
2012           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
2013             {
2014               notethat ("dsp32shift: dregs = DEPOSIT (dregs , dregs )\n");
2015               $$ = DSP32SHIFT (10, &$1, &$7, &$5, 2, 0);
2016             }
2017           else
2018             return yyerror ("Register mismatch");
2019         }
2020
2021         | REG ASSIGN DEPOSIT LPAREN REG COMMA REG RPAREN LPAREN X RPAREN
2022         {
2023           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
2024             {
2025               notethat ("dsp32shift: dregs = DEPOSIT (dregs , dregs ) (X)\n");
2026               $$ = DSP32SHIFT (10, &$1, &$7, &$5, 3, 0);
2027             }
2028           else
2029             return yyerror ("Register mismatch");
2030         }
2031
2032         | REG ASSIGN EXTRACT LPAREN REG COMMA HALF_REG RPAREN xpmod
2033         {
2034           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG_L ($7))
2035             {
2036               notethat ("dsp32shift: dregs = EXTRACT (dregs, dregs_lo ) (.)\n");
2037               $$ = DSP32SHIFT (10, &$1, &$7, &$5, $9.r0, 0);
2038             }
2039           else
2040             return yyerror ("Register mismatch");
2041         }
2042
2043         | a_assign REG_A _GREATER_GREATER_GREATER expr
2044         {
2045           if (!REG_SAME ($1, $2))
2046             return yyerror ("Aregs must be same");
2047
2048           if (IS_UIMM ($4, 5))
2049             {
2050               notethat ("dsp32shiftimm: Ax = Ax >>> uimm5\n");
2051               $$ = DSP32SHIFTIMM (3, 0, -imm6 ($4), 0, 0, IS_A1 ($1));
2052             }
2053           else
2054             return yyerror ("Shift value range error");
2055         }
2056         | a_assign LSHIFT REG_A BY HALF_REG
2057         {
2058           if (REG_SAME ($1, $3) && IS_DREG_L ($5))
2059             {
2060               notethat ("dsp32shift: Ax = LSHIFT Ax BY dregs_lo\n");
2061               $$ = DSP32SHIFT (3, 0, &$5, 0, 1, IS_A1 ($1));
2062             }
2063           else
2064             return yyerror ("Register mismatch");
2065         }
2066
2067         | HALF_REG ASSIGN LSHIFT HALF_REG BY HALF_REG
2068         {
2069           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG_L ($6))
2070             {
2071               notethat ("dsp32shift: dregs_lo = LSHIFT dregs_hi BY dregs_lo\n");
2072               $$ = DSP32SHIFT (0, &$1, &$6, &$4, 2, HL2 ($1, $4));
2073             }
2074           else
2075             return yyerror ("Register mismatch");
2076         }
2077
2078         | REG ASSIGN LSHIFT REG BY HALF_REG vmod
2079         {
2080           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG_L ($6))
2081             {
2082               notethat ("dsp32shift: dregs = LSHIFT dregs BY dregs_lo (V )\n");
2083               $$ = DSP32SHIFT ($7.r0 ? 1: 2, &$1, &$6, &$4, 2, 0);
2084             }
2085           else
2086             return yyerror ("Register mismatch");
2087         }
2088
2089         | REG ASSIGN SHIFT REG BY HALF_REG
2090         {
2091           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG_L ($6))
2092             {
2093               notethat ("dsp32shift: dregs = SHIFT dregs BY dregs_lo\n");
2094               $$ = DSP32SHIFT (2, &$1, &$6, &$4, 2, 0);
2095             }
2096           else
2097             return yyerror ("Register mismatch");
2098         }
2099
2100         | a_assign REG_A GREATER_GREATER expr
2101         {
2102           if (REG_SAME ($1, $2) && IS_IMM ($4, 6) >= 0)
2103             {
2104               notethat ("dsp32shiftimm: Ax = Ax >> imm6\n");
2105               $$ = DSP32SHIFTIMM (3, 0, -imm6 ($4), 0, 1, IS_A1 ($1));
2106             }
2107           else
2108             return yyerror ("Accu register expected");
2109         }
2110
2111         | REG ASSIGN REG GREATER_GREATER expr vmod
2112         {
2113           if ($6.r0 == 1)
2114             {
2115               if (IS_DREG ($1) && IS_DREG ($3) && IS_UIMM ($5, 5))
2116                 {
2117                   notethat ("dsp32shiftimm: dregs = dregs >> uimm5 (V)\n");
2118                   $$ = DSP32SHIFTIMM (1, &$1, -uimm5 ($5), &$3, 2, 0);
2119                 }
2120               else
2121                 return yyerror ("Register mismatch");
2122             }
2123           else
2124             {
2125               if (IS_DREG ($1) && IS_DREG ($3) && IS_UIMM ($5, 5))
2126                 {
2127                   notethat ("dsp32shiftimm: dregs = dregs >> uimm5\n");
2128                   $$ = DSP32SHIFTIMM (2, &$1, -imm6 ($5), &$3, 2, 0);
2129                 }
2130               else if (IS_PREG ($1) && IS_PREG ($3) && EXPR_VALUE ($5) == 2)
2131                 {
2132                   notethat ("PTR2op: pregs = pregs >> 2\n");
2133                   $$ = PTR2OP (&$1, &$3, 3);
2134                 }
2135               else if (IS_PREG ($1) && IS_PREG ($3) && EXPR_VALUE ($5) == 1)
2136                 {
2137                   notethat ("PTR2op: pregs = pregs >> 1\n");
2138                   $$ = PTR2OP (&$1, &$3, 4);
2139                 }
2140               else
2141                 return yyerror ("Register mismatch");
2142             }
2143         }
2144         | HALF_REG ASSIGN HALF_REG GREATER_GREATER expr
2145         {
2146           if (IS_UIMM ($5, 5))
2147             {
2148               notethat ("dsp32shiftimm:  dregs_half =  dregs_half >> uimm5\n");
2149               $$ = DSP32SHIFTIMM (0, &$1, -uimm5 ($5), &$3, 2, HL2 ($1, $3));
2150             }
2151           else
2152             return yyerror ("Register mismatch");
2153         }
2154         | HALF_REG ASSIGN HALF_REG _GREATER_GREATER_GREATER expr smod
2155         {
2156           if (IS_UIMM ($5, 5))
2157             {
2158               notethat ("dsp32shiftimm: dregs_half = dregs_half >>> uimm5\n");
2159               $$ = DSP32SHIFTIMM (0, &$1, -uimm5 ($5), &$3,
2160                                   $6.s0, HL2 ($1, $3));
2161             }
2162           else
2163             return yyerror ("Register or modifier mismatch");
2164         }
2165
2166
2167         | REG ASSIGN REG _GREATER_GREATER_GREATER expr vsmod
2168         {
2169           if (IS_DREG ($1) && IS_DREG ($3) && IS_UIMM ($5, 5))
2170             {
2171               if ($6.r0)
2172                 {
2173                   /* Vector?  */
2174                   notethat ("dsp32shiftimm: dregs  =  dregs >>> uimm5 (V, .)\n");
2175                   $$ = DSP32SHIFTIMM (1, &$1, -uimm5 ($5), &$3, $6.s0, 0);
2176                 }
2177               else
2178                 {
2179                   notethat ("dsp32shiftimm: dregs  =  dregs >>> uimm5 (.)\n");
2180                   $$ = DSP32SHIFTIMM (2, &$1, -uimm5 ($5), &$3, $6.s0, 0);
2181                 }
2182             }
2183           else
2184             return yyerror ("Register mismatch");
2185         }
2186
2187         | HALF_REG ASSIGN ONES REG
2188         {
2189           if (IS_DREG_L ($1) && IS_DREG ($4))
2190             {
2191               notethat ("dsp32shift: dregs_lo = ONES dregs\n");
2192               $$ = DSP32SHIFT (6, &$1, 0, &$4, 3, 0);
2193             }
2194           else
2195             return yyerror ("Register mismatch");
2196         }
2197
2198         | REG ASSIGN PACK LPAREN HALF_REG COMMA HALF_REG RPAREN
2199         {
2200           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
2201             {
2202               notethat ("dsp32shift: dregs = PACK (dregs_hi , dregs_hi )\n");
2203               $$ = DSP32SHIFT (4, &$1, &$7, &$5, HL2 ($5, $7), 0);
2204             }
2205           else
2206             return yyerror ("Register mismatch");
2207         }
2208
2209         | HALF_REG ASSIGN CCREG ASSIGN BXORSHIFT LPAREN REG_A COMMA REG RPAREN
2210         {
2211           if (IS_DREG ($1)
2212               && $7.regno == REG_A0
2213               && IS_DREG ($9) && !IS_H ($1) && !IS_A1 ($7))
2214             {
2215               notethat ("dsp32shift: dregs_lo = CC = BXORSHIFT (A0 , dregs )\n");
2216               $$ = DSP32SHIFT (11, &$1, &$9, 0, 0, 0);
2217             }
2218           else
2219             return yyerror ("Register mismatch");
2220         }
2221
2222         | HALF_REG ASSIGN CCREG ASSIGN BXOR LPAREN REG_A COMMA REG RPAREN
2223         {
2224           if (IS_DREG ($1)
2225               && $7.regno == REG_A0
2226               && IS_DREG ($9) && !IS_H ($1) && !IS_A1 ($7))
2227             {
2228               notethat ("dsp32shift: dregs_lo = CC = BXOR (A0 , dregs)\n");
2229               $$ = DSP32SHIFT (11, &$1, &$9, 0, 1, 0);
2230             }
2231           else
2232             return yyerror ("Register mismatch");
2233         }
2234
2235         | HALF_REG ASSIGN CCREG ASSIGN BXOR LPAREN REG_A COMMA REG_A COMMA CCREG RPAREN
2236         {
2237           if (IS_DREG ($1) && !IS_H ($1) && !REG_SAME ($7, $9))
2238             {
2239               notethat ("dsp32shift: dregs_lo = CC = BXOR (A0 , A1 , CC)\n");
2240               $$ = DSP32SHIFT (12, &$1, 0, 0, 1, 0);
2241             }
2242           else
2243             return yyerror ("Register mismatch");
2244         }
2245
2246         | a_assign ROT REG_A BY HALF_REG
2247         {
2248           if (REG_SAME ($1, $3) && IS_DREG_L ($5))
2249             {
2250               notethat ("dsp32shift: Ax = ROT Ax BY dregs_lo\n");
2251               $$ = DSP32SHIFT (3, 0, &$5, 0, 2, IS_A1 ($1));
2252             }
2253           else
2254             return yyerror ("Register mismatch");
2255         }
2256
2257         | REG ASSIGN ROT REG BY HALF_REG
2258         {
2259           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG_L ($6))
2260             {
2261               notethat ("dsp32shift: dregs = ROT dregs BY dregs_lo\n");
2262               $$ = DSP32SHIFT (2, &$1, &$6, &$4, 3, 0);
2263             }
2264           else
2265             return yyerror ("Register mismatch");
2266         }
2267
2268         | a_assign ROT REG_A BY expr
2269         {
2270           if (IS_IMM ($5, 6))
2271             {
2272               notethat ("dsp32shiftimm: An = ROT An BY imm6\n");
2273               $$ = DSP32SHIFTIMM (3, 0, imm6 ($5), 0, 2, IS_A1 ($1));
2274             }
2275           else
2276             return yyerror ("Register mismatch");
2277         }
2278
2279         | REG ASSIGN ROT REG BY expr
2280         {
2281           if (IS_DREG ($1) && IS_DREG ($4) && IS_IMM ($6, 6))
2282             {
2283               $$ = DSP32SHIFTIMM (2, &$1, imm6 ($6), &$4, 3, IS_A1 ($1));
2284             }
2285           else
2286             return yyerror ("Register mismatch");
2287         }
2288
2289         | HALF_REG ASSIGN SIGNBITS REG_A
2290         {
2291           if (IS_DREG_L ($1))
2292             {
2293               notethat ("dsp32shift: dregs_lo = SIGNBITS An\n");
2294               $$ = DSP32SHIFT (6, &$1, 0, 0, IS_A1 ($4), 0);
2295             }
2296           else
2297             return yyerror ("Register mismatch");
2298         }
2299
2300         | HALF_REG ASSIGN SIGNBITS REG
2301         {
2302           if (IS_DREG_L ($1) && IS_DREG ($4))
2303             {
2304               notethat ("dsp32shift: dregs_lo = SIGNBITS dregs\n");
2305               $$ = DSP32SHIFT (5, &$1, 0, &$4, 0, 0);
2306             }
2307           else
2308             return yyerror ("Register mismatch");
2309         }
2310
2311         | HALF_REG ASSIGN SIGNBITS HALF_REG
2312         {
2313           if (IS_DREG_L ($1))
2314             {
2315               notethat ("dsp32shift: dregs_lo = SIGNBITS dregs_lo\n");
2316               $$ = DSP32SHIFT (5, &$1, 0, &$4, 1 + IS_H ($4), 0);
2317             }
2318           else
2319             return yyerror ("Register mismatch");
2320         }
2321
2322         /* The ASR bit is just inverted here. */
2323         | HALF_REG ASSIGN VIT_MAX LPAREN REG RPAREN asr_asl
2324         {
2325           if (IS_DREG_L ($1) && IS_DREG ($5))
2326             {
2327               notethat ("dsp32shift: dregs_lo = VIT_MAX (dregs) (..)\n");
2328               $$ = DSP32SHIFT (9, &$1, 0, &$5, ($7.r0 ? 0 : 1), 0);
2329             }
2330           else
2331             return yyerror ("Register mismatch");
2332         }
2333
2334         | REG ASSIGN VIT_MAX LPAREN REG COMMA REG RPAREN asr_asl
2335         {
2336           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
2337             {
2338               notethat ("dsp32shift: dregs = VIT_MAX (dregs, dregs) (ASR)\n");
2339               $$ = DSP32SHIFT (9, &$1, &$7, &$5, 2 | ($9.r0 ? 0 : 1), 0);
2340             }
2341           else
2342             return yyerror ("Register mismatch");
2343         }
2344
2345         | BITMUX LPAREN REG COMMA REG COMMA REG_A RPAREN asr_asl
2346         {
2347           if (IS_DREG ($3) && IS_DREG ($5) && !IS_A1 ($7))
2348             {
2349               notethat ("dsp32shift: BITMUX (dregs , dregs , A0) (ASR)\n");
2350               $$ = DSP32SHIFT (8, 0, &$3, &$5, $9.r0, 0);
2351             }
2352           else
2353             return yyerror ("Register mismatch");
2354         }
2355
2356         | a_assign BXORSHIFT LPAREN REG_A COMMA REG_A COMMA CCREG RPAREN
2357         {
2358           if (!IS_A1 ($1) && !IS_A1 ($4) && IS_A1 ($6))
2359             {
2360               notethat ("dsp32shift: A0 = BXORSHIFT (A0 , A1 , CC )\n");
2361               $$ = DSP32SHIFT (12, 0, 0, 0, 0, 0);
2362             }
2363           else
2364             return yyerror ("Dregs expected");
2365         }
2366
2367
2368 /* LOGI2op:     BITCLR (dregs, uimm5).  */
2369         | BITCLR LPAREN REG COMMA expr RPAREN
2370         {
2371           if (IS_DREG ($3) && IS_UIMM ($5, 5))
2372             {
2373               notethat ("LOGI2op: BITCLR (dregs , uimm5 )\n");
2374               $$ = LOGI2OP ($3, uimm5 ($5), 4);
2375             }
2376           else
2377             return yyerror ("Register mismatch");
2378         }
2379
2380 /* LOGI2op:     BITSET (dregs, uimm5).  */
2381         | BITSET LPAREN REG COMMA expr RPAREN
2382         {
2383           if (IS_DREG ($3) && IS_UIMM ($5, 5))
2384             {
2385               notethat ("LOGI2op: BITCLR (dregs , uimm5 )\n");
2386               $$ = LOGI2OP ($3, uimm5 ($5), 2);
2387             }
2388           else
2389             return yyerror ("Register mismatch");
2390         }
2391
2392 /* LOGI2op:     BITTGL (dregs, uimm5).  */
2393         | BITTGL LPAREN REG COMMA expr RPAREN
2394         {
2395           if (IS_DREG ($3) && IS_UIMM ($5, 5))
2396             {
2397               notethat ("LOGI2op: BITCLR (dregs , uimm5 )\n");
2398               $$ = LOGI2OP ($3, uimm5 ($5), 3);
2399             }
2400           else
2401             return yyerror ("Register mismatch");
2402         }
2403
2404         | CCREG _ASSIGN_BANG BITTST LPAREN REG COMMA expr RPAREN
2405         {
2406           if (IS_DREG ($5) && IS_UIMM ($7, 5))
2407             {
2408               notethat ("LOGI2op: CC =! BITTST (dregs , uimm5 )\n");
2409               $$ = LOGI2OP ($5, uimm5 ($7), 0);
2410             }
2411           else
2412             return yyerror ("Register mismatch or value error");
2413         }
2414
2415         | CCREG ASSIGN BITTST LPAREN REG COMMA expr RPAREN
2416         {
2417           if (IS_DREG ($5) && IS_UIMM ($7, 5))
2418             {
2419               notethat ("LOGI2op: CC = BITTST (dregs , uimm5 )\n");
2420               $$ = LOGI2OP ($5, uimm5 ($7), 1);
2421             }
2422           else
2423             return yyerror ("Register mismatch or value error");
2424         }
2425
2426         | IF BANG CCREG REG ASSIGN REG
2427         {
2428           if ((IS_DREG ($4) || IS_PREG ($4))
2429               && (IS_DREG ($6) || IS_PREG ($6)))
2430             {
2431               notethat ("ccMV: IF ! CC gregs = gregs\n");
2432               $$ = CCMV (&$6, &$4, 0);
2433             }
2434           else
2435             return yyerror ("Register mismatch");
2436         }
2437
2438         | IF CCREG REG ASSIGN REG
2439         {
2440           if ((IS_DREG ($5) || IS_PREG ($5))
2441               && (IS_DREG ($3) || IS_PREG ($3)))
2442             {
2443               notethat ("ccMV: IF CC gregs = gregs\n");
2444               $$ = CCMV (&$5, &$3, 1);
2445             }
2446           else
2447             return yyerror ("Register mismatch");
2448         }
2449
2450         | IF BANG CCREG JUMP expr
2451         {
2452           if (IS_PCREL10 ($5))
2453             {
2454               notethat ("BRCC: IF !CC JUMP  pcrel11m2\n");
2455               $$ = BRCC (0, 0, $5);
2456             }
2457           else
2458             return yyerror ("Bad jump offset");
2459         }
2460
2461         | IF BANG CCREG JUMP expr LPAREN BP RPAREN
2462         {
2463           if (IS_PCREL10 ($5))
2464             {
2465               notethat ("BRCC: IF !CC JUMP  pcrel11m2\n");
2466               $$ = BRCC (0, 1, $5);
2467             }
2468           else
2469             return yyerror ("Bad jump offset");
2470         }
2471
2472         | IF CCREG JUMP expr
2473         {
2474           if (IS_PCREL10 ($4))
2475             {
2476               notethat ("BRCC: IF CC JUMP  pcrel11m2\n");
2477               $$ = BRCC (1, 0, $4);
2478             }
2479           else
2480             return yyerror ("Bad jump offset");
2481         }
2482
2483         | IF CCREG JUMP expr LPAREN BP RPAREN
2484         {
2485           if (IS_PCREL10 ($4))
2486             {
2487               notethat ("BRCC: IF !CC JUMP  pcrel11m2\n");
2488               $$ = BRCC (1, 1, $4);
2489             }
2490           else
2491             return yyerror ("Bad jump offset");
2492         }
2493         | NOP
2494         {
2495           notethat ("ProgCtrl: NOP\n");
2496           $$ = PROGCTRL (0, 0);
2497         }
2498
2499         | RTS
2500         {
2501           notethat ("ProgCtrl: RTS\n");
2502           $$ = PROGCTRL (1, 0);
2503         }
2504
2505         | RTI
2506         {
2507           notethat ("ProgCtrl: RTI\n");
2508           $$ = PROGCTRL (1, 1);
2509         }
2510
2511         | RTX
2512         {
2513           notethat ("ProgCtrl: RTX\n");
2514           $$ = PROGCTRL (1, 2);
2515         }
2516
2517         | RTN
2518         {
2519           notethat ("ProgCtrl: RTN\n");
2520           $$ = PROGCTRL (1, 3);
2521         }
2522
2523         | RTE
2524         {
2525           notethat ("ProgCtrl: RTE\n");
2526           $$ = PROGCTRL (1, 4);
2527         }
2528
2529         | IDLE
2530         {
2531           notethat ("ProgCtrl: IDLE\n");
2532           $$ = PROGCTRL (2, 0);
2533         }
2534
2535         | CSYNC
2536         {
2537           notethat ("ProgCtrl: CSYNC\n");
2538           $$ = PROGCTRL (2, 3);
2539         }
2540
2541         | SSYNC
2542         {
2543           notethat ("ProgCtrl: SSYNC\n");
2544           $$ = PROGCTRL (2, 4);
2545         }
2546
2547         | EMUEXCPT
2548         {
2549           notethat ("ProgCtrl: EMUEXCPT\n");
2550           $$ = PROGCTRL (2, 5);
2551         }
2552
2553         | CLI REG
2554         {
2555           if (IS_DREG ($2))
2556             {
2557               notethat ("ProgCtrl: CLI dregs\n");
2558               $$ = PROGCTRL (3, $2.regno & CODE_MASK);
2559             }
2560           else
2561             return yyerror ("Dreg expected for CLI");
2562         }
2563
2564         | STI REG
2565         {
2566           if (IS_DREG ($2))
2567             {
2568               notethat ("ProgCtrl: STI dregs\n");
2569               $$ = PROGCTRL (4, $2.regno & CODE_MASK);
2570             }
2571           else
2572             return yyerror ("Dreg expected for STI");
2573         }
2574
2575         | JUMP LPAREN REG RPAREN
2576         {
2577           if (IS_PREG ($3))
2578             {
2579               notethat ("ProgCtrl: JUMP (pregs )\n");
2580               $$ = PROGCTRL (5, $3.regno & CODE_MASK);
2581             }
2582           else
2583             return yyerror ("Bad register for indirect jump");
2584         }
2585
2586         | CALL LPAREN REG RPAREN
2587         {
2588           if (IS_PREG ($3))
2589             {
2590               notethat ("ProgCtrl: CALL (pregs )\n");
2591               $$ = PROGCTRL (6, $3.regno & CODE_MASK);
2592             }
2593           else
2594             return yyerror ("Bad register for indirect call");
2595         }
2596
2597         | CALL LPAREN PC PLUS REG RPAREN
2598         {
2599           if (IS_PREG ($5))
2600             {
2601               notethat ("ProgCtrl: CALL (PC + pregs )\n");
2602               $$ = PROGCTRL (7, $5.regno & CODE_MASK);
2603             }
2604           else
2605             return yyerror ("Bad register for indirect call");
2606         }
2607
2608         | JUMP LPAREN PC PLUS REG RPAREN
2609         {
2610           if (IS_PREG ($5))
2611             {
2612               notethat ("ProgCtrl: JUMP (PC + pregs )\n");
2613               $$ = PROGCTRL (8, $5.regno & CODE_MASK);
2614             }
2615           else
2616             return yyerror ("Bad register for indirect jump");
2617         }
2618
2619         | RAISE expr
2620         {
2621           if (IS_UIMM ($2, 4))
2622             {
2623               notethat ("ProgCtrl: RAISE uimm4\n");
2624               $$ = PROGCTRL (9, uimm4 ($2));
2625             }
2626           else
2627             return yyerror ("Bad value for RAISE");
2628         }
2629
2630         | EXCPT expr
2631         {
2632                 notethat ("ProgCtrl: EMUEXCPT\n");
2633                 $$ = PROGCTRL (10, uimm4 ($2));
2634         }
2635
2636         | TESTSET LPAREN REG RPAREN
2637         {
2638           if (IS_PREG ($3))
2639             {
2640               notethat ("ProgCtrl: TESTSET (pregs )\n");
2641               $$ = PROGCTRL (11, $3.regno & CODE_MASK);
2642             }
2643           else
2644             return yyerror ("Preg expected");
2645         }
2646
2647         | JUMP expr
2648         {
2649           if (IS_PCREL12 ($2))
2650             {
2651               notethat ("UJUMP: JUMP pcrel12\n");
2652               $$ = UJUMP ($2);
2653             }
2654           else
2655             return yyerror ("Bad value for relative jump");
2656         }
2657
2658         | JUMP_DOT_S expr
2659         {
2660           if (IS_PCREL12 ($2))
2661             {
2662               notethat ("UJUMP: JUMP_DOT_S pcrel12\n");
2663               $$ = UJUMP($2);
2664             }
2665           else
2666             return yyerror ("Bad value for relative jump");
2667         }
2668
2669         | JUMP_DOT_L expr
2670         {
2671           if (IS_PCREL24 ($2))
2672             {
2673               notethat ("CALLa: jump.l pcrel24\n");
2674               $$ = CALLA ($2, 0);
2675             }
2676           else
2677             return yyerror ("Bad value for long jump");
2678         }
2679
2680         | JUMP_DOT_L pltpc
2681         {
2682           if (IS_PCREL24 ($2))
2683             {
2684               notethat ("CALLa: jump.l pcrel24\n");
2685               $$ = CALLA ($2, 2);
2686             }
2687           else
2688             return yyerror ("Bad value for long jump");
2689         }
2690
2691         | CALL expr
2692         {
2693           if (IS_PCREL24 ($2))
2694             {
2695               notethat ("CALLa: CALL pcrel25m2\n");
2696               $$ = CALLA ($2, 1);
2697             }
2698           else
2699             return yyerror ("Bad call address");
2700         }
2701         | CALL pltpc
2702         {
2703           if (IS_PCREL24 ($2))
2704             {
2705               notethat ("CALLa: CALL pcrel25m2\n");
2706               $$ = CALLA ($2, 2);
2707             }
2708           else
2709             return yyerror ("Bad call address");
2710         }
2711
2712 /* ALU2ops.  */
2713 /* ALU2op:      DIVQ (dregs, dregs).  */
2714         | DIVQ LPAREN REG COMMA REG RPAREN
2715         {
2716           if (IS_DREG ($3) && IS_DREG ($5))
2717             $$ = ALU2OP (&$3, &$5, 8);
2718           else
2719             return yyerror ("Bad registers for DIVQ");
2720         }
2721
2722         | DIVS LPAREN REG COMMA REG RPAREN
2723         {
2724           if (IS_DREG ($3) && IS_DREG ($5))
2725             $$ = ALU2OP (&$3, &$5, 9);
2726           else
2727             return yyerror ("Bad registers for DIVS");
2728         }
2729
2730         | REG ASSIGN MINUS REG vsmod
2731         {
2732           if (IS_DREG ($1) && IS_DREG ($4))
2733             {
2734               if ($5.r0 == 0 && $5.s0 == 0 && $5.aop == 0)
2735                 {
2736                   notethat ("ALU2op: dregs = - dregs\n");
2737                   $$ = ALU2OP (&$1, &$4, 14);
2738                 }
2739               else if ($5.r0 == 1 && $5.s0 == 0 && $5.aop == 3)
2740                 {
2741                   notethat ("dsp32alu: dregs = - dregs (.)\n");
2742                   $$ = DSP32ALU (15, 0, 0, &$1, &$4, 0, $5.s0, 0, 3);
2743                 }
2744               else
2745                 {
2746                   notethat ("dsp32alu: dregs = - dregs (.)\n");
2747                   $$ = DSP32ALU (7, 0, 0, &$1, &$4, 0, $5.s0, 0, 3);
2748                 }
2749             }
2750           else
2751             return yyerror ("Dregs expected");
2752         }
2753
2754         | REG ASSIGN TILDA REG
2755         {
2756           if (IS_DREG ($1) && IS_DREG ($4))
2757             {
2758               notethat ("ALU2op: dregs = ~dregs\n");
2759               $$ = ALU2OP (&$1, &$4, 15);
2760             }
2761           else
2762             return yyerror ("Dregs expected");
2763         }
2764
2765         | REG _GREATER_GREATER_ASSIGN REG
2766         {
2767           if (IS_DREG ($1) && IS_DREG ($3))
2768             {
2769               notethat ("ALU2op: dregs >>= dregs\n");
2770               $$ = ALU2OP (&$1, &$3, 1);
2771             }
2772           else
2773             return yyerror ("Dregs expected");
2774         }
2775
2776         | REG _GREATER_GREATER_ASSIGN expr
2777         {
2778           if (IS_DREG ($1) && IS_UIMM ($3, 5))
2779             {
2780               notethat ("LOGI2op: dregs >>= uimm5\n");
2781               $$ = LOGI2OP ($1, uimm5 ($3), 6);
2782             }
2783           else
2784             return yyerror ("Dregs expected or value error");
2785         }
2786
2787         | REG _GREATER_GREATER_GREATER_THAN_ASSIGN REG
2788         {
2789           if (IS_DREG ($1) && IS_DREG ($3))
2790             {
2791               notethat ("ALU2op: dregs >>>= dregs\n");
2792               $$ = ALU2OP (&$1, &$3, 0);
2793             }
2794           else
2795             return yyerror ("Dregs expected");
2796         }
2797
2798         | REG _LESS_LESS_ASSIGN REG
2799         {
2800           if (IS_DREG ($1) && IS_DREG ($3))
2801             {
2802               notethat ("ALU2op: dregs <<= dregs\n");
2803               $$ = ALU2OP (&$1, &$3, 2);
2804             }
2805           else
2806             return yyerror ("Dregs expected");
2807         }
2808
2809         | REG _LESS_LESS_ASSIGN expr
2810         {
2811           if (IS_DREG ($1) && IS_UIMM ($3, 5))
2812             {
2813               notethat ("LOGI2op: dregs <<= uimm5\n");
2814               $$ = LOGI2OP ($1, uimm5 ($3), 7);
2815             }
2816           else
2817             return yyerror ("Dregs expected or const value error");
2818         }
2819
2820
2821         | REG _GREATER_GREATER_GREATER_THAN_ASSIGN expr
2822         {
2823           if (IS_DREG ($1) && IS_UIMM ($3, 5))
2824             {
2825               notethat ("LOGI2op: dregs >>>= uimm5\n");
2826               $$ = LOGI2OP ($1, uimm5 ($3), 5);
2827             }
2828           else
2829             return yyerror ("Dregs expected");
2830         }
2831
2832 /* Cache Control.  */
2833
2834         | FLUSH LBRACK REG RBRACK
2835         {
2836           notethat ("CaCTRL: FLUSH [ pregs ]\n");
2837           if (IS_PREG ($3))
2838             $$ = CACTRL (&$3, 0, 2);
2839           else
2840             return yyerror ("Bad register(s) for FLUSH");
2841         }
2842
2843         | FLUSH reg_with_postinc
2844         {
2845           if (IS_PREG ($2))
2846             {
2847               notethat ("CaCTRL: FLUSH [ pregs ++ ]\n");
2848               $$ = CACTRL (&$2, 1, 2);
2849             }
2850           else
2851             return yyerror ("Bad register(s) for FLUSH");
2852         }
2853
2854         | FLUSHINV LBRACK REG RBRACK
2855         {
2856           if (IS_PREG ($3))
2857             {
2858               notethat ("CaCTRL: FLUSHINV [ pregs ]\n");
2859               $$ = CACTRL (&$3, 0, 1);
2860             }
2861           else
2862             return yyerror ("Bad register(s) for FLUSH");
2863         }
2864
2865         | FLUSHINV reg_with_postinc
2866         {
2867           if (IS_PREG ($2))
2868             {
2869               notethat ("CaCTRL: FLUSHINV [ pregs ++ ]\n");
2870               $$ = CACTRL (&$2, 1, 1);
2871             }
2872           else
2873             return yyerror ("Bad register(s) for FLUSH");
2874         }
2875
2876 /* CaCTRL:      IFLUSH [pregs].  */
2877         | IFLUSH LBRACK REG RBRACK
2878         {
2879           if (IS_PREG ($3))
2880             {
2881               notethat ("CaCTRL: IFLUSH [ pregs ]\n");
2882               $$ = CACTRL (&$3, 0, 3);
2883             }
2884           else
2885             return yyerror ("Bad register(s) for FLUSH");
2886         }
2887
2888         | IFLUSH reg_with_postinc
2889         {
2890           if (IS_PREG ($2))
2891             {
2892               notethat ("CaCTRL: IFLUSH [ pregs ++ ]\n");
2893               $$ = CACTRL (&$2, 1, 3);
2894             }
2895           else
2896             return yyerror ("Bad register(s) for FLUSH");
2897         }
2898
2899         | PREFETCH LBRACK REG RBRACK
2900         {
2901           if (IS_PREG ($3))
2902             {
2903               notethat ("CaCTRL: PREFETCH [ pregs ]\n");
2904               $$ = CACTRL (&$3, 0, 0);
2905             }
2906           else
2907             return yyerror ("Bad register(s) for PREFETCH");
2908         }
2909
2910         | PREFETCH reg_with_postinc
2911         {
2912           if (IS_PREG ($2))
2913             {
2914               notethat ("CaCTRL: PREFETCH [ pregs ++ ]\n");
2915               $$ = CACTRL (&$2, 1, 0);
2916             }
2917           else
2918             return yyerror ("Bad register(s) for PREFETCH");
2919         }
2920
2921 /* LOAD/STORE.  */
2922 /* LDST:        B [ pregs <post_op> ] = dregs.  */
2923
2924         | B LBRACK REG post_op RBRACK ASSIGN REG
2925         {
2926           if (IS_PREG ($3) && IS_DREG ($7))
2927             {
2928               notethat ("LDST: B [ pregs <post_op> ] = dregs\n");
2929               $$ = LDST (&$3, &$7, $4.x0, 2, 0, 1);
2930             }
2931           else
2932             return yyerror ("Register mismatch");
2933         }
2934
2935 /* LDSTidxI:    B [ pregs + imm16 ] = dregs.  */
2936         | B LBRACK REG plus_minus expr RBRACK ASSIGN REG
2937         {
2938           if (IS_PREG ($3) && IS_RANGE(16, $5, $4.r0, 1) && IS_DREG ($8))
2939             {
2940               notethat ("LDST: B [ pregs + imm16 ] = dregs\n");
2941               if ($4.r0)
2942                 neg_value ($5);
2943               $$ = LDSTIDXI (&$3, &$8, 1, 2, 0, $5);
2944             }
2945           else
2946             return yyerror ("Register mismatch or const size wrong");
2947         }
2948
2949
2950 /* LDSTii:      W [ pregs + uimm4s2 ] = dregs.  */
2951         | W LBRACK REG plus_minus expr RBRACK ASSIGN REG
2952         {
2953           if (IS_PREG ($3) && IS_URANGE (4, $5, $4.r0, 2) && IS_DREG ($8))
2954             {
2955               notethat ("LDSTii: W [ pregs +- uimm5m2 ] = dregs\n");
2956               $$ = LDSTII (&$3, &$8, $5, 1, 1);
2957             }
2958           else if (IS_PREG ($3) && IS_RANGE(16, $5, $4.r0, 2) && IS_DREG ($8))
2959             {
2960               notethat ("LDSTidxI: W [ pregs + imm17m2 ] = dregs\n");
2961               if ($4.r0)
2962                 neg_value ($5);
2963               $$ = LDSTIDXI (&$3, &$8, 1, 1, 0, $5);
2964             }
2965           else
2966             return yyerror ("Bad register(s) or wrong constant size");
2967         }
2968
2969 /* LDST:        W [ pregs <post_op> ] = dregs.  */
2970         | W LBRACK REG post_op RBRACK ASSIGN REG
2971         {
2972           if (IS_PREG ($3) && IS_DREG ($7))
2973             {
2974               notethat ("LDST: W [ pregs <post_op> ] = dregs\n");
2975               $$ = LDST (&$3, &$7, $4.x0, 1, 0, 1);
2976             }
2977           else
2978             return yyerror ("Bad register(s) for STORE");
2979         }
2980
2981         | W LBRACK REG post_op RBRACK ASSIGN HALF_REG
2982         {
2983           if (IS_IREG ($3))
2984             {
2985               notethat ("dspLDST: W [ iregs <post_op> ] = dregs_half\n");
2986               $$ = DSPLDST (&$3, 1 + IS_H ($7), &$7, $4.x0, 1);
2987             }
2988           else if ($4.x0 == 2 && IS_PREG ($3) && IS_DREG ($7))
2989             {
2990               notethat ("LDSTpmod: W [ pregs <post_op>] = dregs_half\n");
2991               $$ = LDSTPMOD (&$3, &$7, &$3, 1 + IS_H ($7), 1);
2992
2993             }
2994           else
2995             return yyerror ("Bad register(s) for STORE");
2996         }
2997
2998 /* LDSTiiFP:    [ FP - const ] = dpregs.  */
2999         | LBRACK REG plus_minus expr RBRACK ASSIGN REG
3000         {
3001           Expr_Node *tmp = $4;
3002           int ispreg = IS_PREG ($7);
3003
3004           if (!IS_PREG ($2))
3005             return yyerror ("Preg expected for indirect");
3006
3007           if (!IS_DREG ($7) && !ispreg)
3008             return yyerror ("Bad source register for STORE");
3009
3010           if ($3.r0)
3011             tmp = unary (Expr_Op_Type_NEG, tmp);
3012
3013           if (in_range_p (tmp, 0, 63, 3))
3014             {
3015               notethat ("LDSTii: dpregs = [ pregs + uimm6m4 ]\n");
3016               $$ = LDSTII (&$2, &$7, tmp, 1, ispreg ? 3 : 0);
3017             }
3018           else if ($2.regno == REG_FP && in_range_p (tmp, -128, 0, 3))
3019             {
3020               notethat ("LDSTiiFP: dpregs = [ FP - uimm7m4 ]\n");
3021               tmp = unary (Expr_Op_Type_NEG, tmp);
3022               $$ = LDSTIIFP (tmp, &$7, 1);
3023             }
3024           else if (in_range_p (tmp, -131072, 131071, 3))
3025             {
3026               notethat ("LDSTidxI: [ pregs + imm18m4 ] = dpregs\n");
3027               $$ = LDSTIDXI (&$2, &$7, 1, 0, ispreg ? 1: 0, tmp);
3028             }
3029           else
3030             return yyerror ("Displacement out of range for store");
3031         }
3032
3033         | REG ASSIGN W LBRACK REG plus_minus expr RBRACK xpmod
3034         {
3035           if (IS_DREG ($1) && IS_PREG ($5) && IS_URANGE (4, $7, $6.r0, 2))
3036             {
3037               notethat ("LDSTii: dregs = W [ pregs + uimm4s2 ] (.)\n");
3038               $$ = LDSTII (&$5, &$1, $7, 0, 1 << $9.r0);
3039             }
3040           else if (IS_DREG ($1) && IS_PREG ($5) && IS_RANGE(16, $7, $6.r0, 2))
3041             {
3042               notethat ("LDSTidxI: dregs = W [ pregs + imm17m2 ] (.)\n");
3043               if ($6.r0)
3044                 neg_value ($7);
3045               $$ = LDSTIDXI (&$5, &$1, 0, 1, $9.r0, $7);
3046             }
3047           else
3048             return yyerror ("Bad register or constant for LOAD");
3049         }
3050
3051         | HALF_REG ASSIGN W LBRACK REG post_op RBRACK
3052         {
3053           if (IS_IREG ($5))
3054             {
3055               notethat ("dspLDST: dregs_half = W [ iregs ]\n");
3056               $$ = DSPLDST(&$5, 1 + IS_H ($1), &$1, $6.x0, 0);
3057             }
3058           else if ($6.x0 == 2 && IS_DREG ($1) && IS_PREG ($5))
3059             {
3060               notethat ("LDSTpmod: dregs_half = W [ pregs ]\n");
3061               $$ = LDSTPMOD (&$5, &$1, &$5, 1 + IS_H ($1), 0);
3062             }
3063           else
3064             return yyerror ("Bad register or post_op for LOAD");
3065         }
3066
3067
3068         | REG ASSIGN W LBRACK REG post_op RBRACK xpmod
3069         {
3070           if (IS_DREG ($1) && IS_PREG ($5))
3071             {
3072               notethat ("LDST: dregs = W [ pregs <post_op> ] (.)\n");
3073               $$ = LDST (&$5, &$1, $6.x0, 1, $8.r0, 0);
3074             }
3075           else
3076             return yyerror ("Bad register for LOAD");
3077         }
3078
3079         | REG ASSIGN W LBRACK REG _PLUS_PLUS REG RBRACK xpmod
3080         {
3081           if (IS_DREG ($1) && IS_PREG ($5) && IS_PREG ($7))
3082             {
3083               notethat ("LDSTpmod: dregs = W [ pregs ++ pregs ] (.)\n");
3084               $$ = LDSTPMOD (&$5, &$1, &$7, 3, $9.r0);
3085             }
3086           else
3087             return yyerror ("Bad register for LOAD");
3088         }
3089
3090         | HALF_REG ASSIGN W LBRACK REG _PLUS_PLUS REG RBRACK
3091         {
3092           if (IS_DREG ($1) && IS_PREG ($5) && IS_PREG ($7))
3093             {
3094               notethat ("LDSTpmod: dregs_half = W [ pregs ++ pregs ]\n");
3095               $$ = LDSTPMOD (&$5, &$1, &$7, 1 + IS_H ($1), 0);
3096             }
3097           else
3098             return yyerror ("Bad register for LOAD");
3099         }
3100
3101         | LBRACK REG post_op RBRACK ASSIGN REG
3102         {
3103           if (IS_IREG ($2) && IS_DREG ($6))
3104             {
3105               notethat ("dspLDST: [ iregs <post_op> ] = dregs\n");
3106               $$ = DSPLDST(&$2, 0, &$6, $3.x0, 1);
3107             }
3108           else if (IS_PREG ($2) && IS_DREG ($6))
3109             {
3110               notethat ("LDST: [ pregs <post_op> ] = dregs\n");
3111               $$ = LDST (&$2, &$6, $3.x0, 0, 0, 1);
3112             }
3113           else if (IS_PREG ($2) && IS_PREG ($6))
3114             {
3115               notethat ("LDST: [ pregs <post_op> ] = pregs\n");
3116               $$ = LDST (&$2, &$6, $3.x0, 0, 1, 1);
3117             }
3118           else
3119             return yyerror ("Bad register for STORE");
3120         }
3121
3122         | LBRACK REG _PLUS_PLUS REG RBRACK ASSIGN REG
3123         {
3124           if (! IS_DREG ($7))
3125             return yyerror ("Expected Dreg for last argument");
3126
3127           if (IS_IREG ($2) && IS_MREG ($4))
3128             {
3129               notethat ("dspLDST: [ iregs ++ mregs ] = dregs\n");
3130               $$ = DSPLDST(&$2, $4.regno & CODE_MASK, &$7, 3, 1);
3131             }
3132           else if (IS_PREG ($2) && IS_PREG ($4))
3133             {
3134               notethat ("LDSTpmod: [ pregs ++ pregs ] = dregs\n");
3135               $$ = LDSTPMOD (&$2, &$7, &$4, 0, 1);
3136             }
3137           else
3138             return yyerror ("Bad register for STORE");
3139         }
3140
3141         | W LBRACK REG _PLUS_PLUS REG RBRACK ASSIGN HALF_REG
3142         {
3143           if (!IS_DREG ($8))
3144             return yyerror ("Expect Dreg as last argument");
3145           if (IS_PREG ($3) && IS_PREG ($5))
3146             {
3147               notethat ("LDSTpmod: W [ pregs ++ pregs ] = dregs_half\n");
3148               $$ = LDSTPMOD (&$3, &$8, &$5, 1 + IS_H ($8), 1);
3149             }
3150           else
3151             return yyerror ("Bad register for STORE");
3152         }
3153
3154         | REG ASSIGN B LBRACK REG plus_minus expr RBRACK xpmod
3155         {
3156           if (IS_DREG ($1) && IS_PREG ($5) && IS_RANGE(16, $7, $6.r0, 1))
3157             {
3158               notethat ("LDSTidxI: dregs = B [ pregs + imm16 ] (%c)\n",
3159                        $9.r0 ? 'X' : 'Z');
3160               if ($6.r0)
3161                 neg_value ($7);
3162               $$ = LDSTIDXI (&$5, &$1, 0, 2, $9.r0, $7);
3163             }
3164           else
3165             return yyerror ("Bad register or value for LOAD");
3166         }
3167
3168         | REG ASSIGN B LBRACK REG post_op RBRACK xpmod
3169         {
3170           if (IS_DREG ($1) && IS_PREG ($5))
3171             {
3172               notethat ("LDST: dregs = B [ pregs <post_op> ] (%c)\n",
3173                        $8.r0 ? 'X' : 'Z');
3174               $$ = LDST (&$5, &$1, $6.x0, 2, $8.r0, 0);
3175             }
3176           else
3177             return yyerror ("Bad register for LOAD");
3178         }
3179
3180         | REG ASSIGN LBRACK REG _PLUS_PLUS REG RBRACK
3181         {
3182           if (IS_DREG ($1) && IS_IREG ($4) && IS_MREG ($6))
3183             {
3184               notethat ("dspLDST: dregs = [ iregs ++ mregs ]\n");
3185               $$ = DSPLDST(&$4, $6.regno & CODE_MASK, &$1, 3, 0);
3186             }
3187           else if (IS_DREG ($1) && IS_PREG ($4) && IS_PREG ($6))
3188             {
3189               notethat ("LDSTpmod: dregs = [ pregs ++ pregs ]\n");
3190               $$ = LDSTPMOD (&$4, &$1, &$6, 0, 0);
3191             }
3192           else
3193             return yyerror ("Bad register for LOAD");
3194         }
3195
3196         | REG ASSIGN LBRACK REG plus_minus got_or_expr RBRACK
3197         {
3198           Expr_Node *tmp = $6;
3199           int ispreg = IS_PREG ($1);
3200           int isgot = IS_RELOC($6);
3201
3202           if (!IS_PREG ($4))
3203             return yyerror ("Preg expected for indirect");
3204
3205           if (!IS_DREG ($1) && !ispreg)
3206             return yyerror ("Bad destination register for LOAD");
3207
3208           if (tmp->type == Expr_Node_Reloc
3209               && strcmp (tmp->value.s_value,
3210                          "_current_shared_library_p5_offset_") != 0)
3211             return yyerror ("Plain symbol used as offset");
3212
3213           if ($5.r0)
3214             tmp = unary (Expr_Op_Type_NEG, tmp);
3215
3216           if(isgot){
3217               notethat ("LDSTidxI: dpregs = [ pregs + sym@got ]\n");
3218               $$ = LDSTIDXI (&$4, &$1, 0, 0, ispreg ? 1: 0, tmp);
3219           }
3220           else if (in_range_p (tmp, 0, 63, 3))
3221             {
3222               notethat ("LDSTii: dpregs = [ pregs + uimm7m4 ]\n");
3223               $$ = LDSTII (&$4, &$1, tmp, 0, ispreg ? 3 : 0);
3224             }
3225           else if ($4.regno == REG_FP && in_range_p (tmp, -128, 0, 3))
3226             {
3227               notethat ("LDSTiiFP: dpregs = [ FP - uimm7m4 ]\n");
3228               tmp = unary (Expr_Op_Type_NEG, tmp);
3229               $$ = LDSTIIFP (tmp, &$1, 0);
3230             }
3231           else if (in_range_p (tmp, -131072, 131071, 3))
3232             {
3233               notethat ("LDSTidxI: dpregs = [ pregs + imm18m4 ]\n");
3234               $$ = LDSTIDXI (&$4, &$1, 0, 0, ispreg ? 1: 0, tmp);
3235
3236             }
3237           else
3238             return yyerror ("Displacement out of range for load");
3239         }
3240
3241         | REG ASSIGN LBRACK REG post_op RBRACK
3242         {
3243           if (IS_DREG ($1) && IS_IREG ($4))
3244             {
3245               notethat ("dspLDST: dregs = [ iregs <post_op> ]\n");
3246               $$ = DSPLDST (&$4, 0, &$1, $5.x0, 0);
3247             }
3248           else if (IS_DREG ($1) && IS_PREG ($4))
3249             {
3250               notethat ("LDST: dregs = [ pregs <post_op> ]\n");
3251               $$ = LDST (&$4, &$1, $5.x0, 0, 0, 0);
3252             }
3253           else if (IS_PREG ($1) && IS_PREG ($4))
3254             {
3255               if (REG_SAME ($1, $4) && $5.x0 != 2)
3256                 return yyerror ("Pregs can't be same");
3257
3258               notethat ("LDST: pregs = [ pregs <post_op> ]\n");
3259               $$ = LDST (&$4, &$1, $5.x0, 0, 1, 0);
3260             }
3261           else if ($4.regno == REG_SP && IS_ALLREG ($1) && $5.x0 == 0)
3262             {
3263               notethat ("PushPopReg: allregs = [ SP ++ ]\n");
3264               $$ = PUSHPOPREG (&$1, 0);
3265             }
3266           else
3267             return yyerror ("Bad register or value");
3268         }
3269
3270
3271 /*  PushPopMultiple.  */
3272         | reg_with_predec ASSIGN LPAREN REG COLON expr COMMA REG COLON expr RPAREN
3273         {
3274           if ($1.regno != REG_SP)
3275             yyerror ("Stack Pointer expected");
3276           if ($4.regno == REG_R7
3277               && IN_RANGE ($6, 0, 7)
3278               && $8.regno == REG_P5
3279               && IN_RANGE ($10, 0, 5))
3280             {
3281               notethat ("PushPopMultiple: [ -- SP ] = (R7 : reglim , P5 : reglim )\n");
3282               $$ = PUSHPOPMULTIPLE (imm5 ($6), imm5 ($10), 1, 1, 1);
3283             }
3284           else
3285             return yyerror ("Bad register for PushPopMultiple");
3286         }
3287
3288         | reg_with_predec ASSIGN LPAREN REG COLON expr RPAREN
3289         {
3290           if ($1.regno != REG_SP)
3291             yyerror ("Stack Pointer expected");
3292
3293           if ($4.regno == REG_R7 && IN_RANGE ($6, 0, 7))
3294             {
3295               notethat ("PushPopMultiple: [ -- SP ] = (R7 : reglim )\n");
3296               $$ = PUSHPOPMULTIPLE (imm5 ($6), 0, 1, 0, 1);
3297             }
3298           else if ($4.regno == REG_P5 && IN_RANGE ($6, 0, 6))
3299             {
3300               notethat ("PushPopMultiple: [ -- SP ] = (P5 : reglim )\n");
3301               $$ = PUSHPOPMULTIPLE (0, imm5 ($6), 0, 1, 1);
3302             }
3303           else
3304             return yyerror ("Bad register for PushPopMultiple");
3305         }
3306
3307         | LPAREN REG COLON expr COMMA REG COLON expr RPAREN ASSIGN reg_with_postinc
3308         {
3309           if ($11.regno != REG_SP)
3310             yyerror ("Stack Pointer expected");
3311           if ($2.regno == REG_R7 && (IN_RANGE ($4, 0, 7))
3312               && $6.regno == REG_P5 && (IN_RANGE ($8, 0, 6)))
3313             {
3314               notethat ("PushPopMultiple: (R7 : reglim , P5 : reglim ) = [ SP ++ ]\n");
3315               $$ = PUSHPOPMULTIPLE (imm5 ($4), imm5 ($8), 1, 1, 0);
3316             }
3317           else
3318             return yyerror ("Bad register range for PushPopMultiple");
3319         }
3320
3321         | LPAREN REG COLON expr RPAREN ASSIGN reg_with_postinc
3322         {
3323           if ($7.regno != REG_SP)
3324             yyerror ("Stack Pointer expected");
3325
3326           if ($2.regno == REG_R7 && IN_RANGE ($4, 0, 7))
3327             {
3328               notethat ("PushPopMultiple: (R7 : reglim ) = [ SP ++ ]\n");
3329               $$ = PUSHPOPMULTIPLE (imm5 ($4), 0, 1, 0, 0);
3330             }
3331           else if ($2.regno == REG_P5 && IN_RANGE ($4, 0, 6))
3332             {
3333               notethat ("PushPopMultiple: (P5 : reglim ) = [ SP ++ ]\n");
3334               $$ = PUSHPOPMULTIPLE (0, imm5 ($4), 0, 1, 0);
3335             }
3336           else
3337             return yyerror ("Bad register range for PushPopMultiple");
3338         }
3339
3340         | reg_with_predec ASSIGN REG
3341         {
3342           if ($1.regno != REG_SP)
3343             yyerror ("Stack Pointer expected");
3344
3345           if (IS_ALLREG ($3))
3346             {
3347               notethat ("PushPopReg: [ -- SP ] = allregs\n");
3348               $$ = PUSHPOPREG (&$3, 1);
3349             }
3350           else
3351             return yyerror ("Bad register for PushPopReg");
3352         }
3353
3354 /* Linkage.  */
3355
3356         | LINK expr
3357         {
3358           if (IS_URANGE (16, $2, 0, 4))
3359             $$ = LINKAGE (0, uimm16s4 ($2));
3360           else
3361             return yyerror ("Bad constant for LINK");
3362         }
3363
3364         | UNLINK
3365         {
3366                 notethat ("linkage: UNLINK\n");
3367                 $$ = LINKAGE (1, 0);
3368         }
3369
3370
3371 /* LSETUP.  */
3372
3373         | LSETUP LPAREN expr COMMA expr RPAREN REG
3374         {
3375           if (IS_PCREL4 ($3) && IS_LPPCREL10 ($5) && IS_CREG ($7))
3376             {
3377               notethat ("LoopSetup: LSETUP (pcrel4 , lppcrel10 ) counters\n");
3378               $$ = LOOPSETUP ($3, &$7, 0, $5, 0);
3379             }
3380           else
3381             return yyerror ("Bad register or values for LSETUP");
3382
3383         }
3384         | LSETUP LPAREN expr COMMA expr RPAREN REG ASSIGN REG
3385         {
3386           if (IS_PCREL4 ($3) && IS_LPPCREL10 ($5)
3387               && IS_PREG ($9) && IS_CREG ($7))
3388             {
3389               notethat ("LoopSetup: LSETUP (pcrel4 , lppcrel10 ) counters = pregs\n");
3390               $$ = LOOPSETUP ($3, &$7, 1, $5, &$9);
3391             }
3392           else
3393             return yyerror ("Bad register or values for LSETUP");
3394         }
3395
3396         | LSETUP LPAREN expr COMMA expr RPAREN REG ASSIGN REG GREATER_GREATER expr
3397         {
3398           if (IS_PCREL4 ($3) && IS_LPPCREL10 ($5)
3399               && IS_PREG ($9) && IS_CREG ($7)
3400               && EXPR_VALUE ($11) == 1)
3401             {
3402               notethat ("LoopSetup: LSETUP (pcrel4 , lppcrel10 ) counters = pregs >> 1\n");
3403               $$ = LOOPSETUP ($3, &$7, 3, $5, &$9);
3404             }
3405           else
3406             return yyerror ("Bad register or values for LSETUP");
3407         }
3408
3409 /* LOOP.  */
3410         | LOOP expr REG
3411         {
3412           if (!IS_RELOC ($2))
3413             return yyerror ("Invalid expression in loop statement");
3414           if (!IS_CREG ($3))
3415             return yyerror ("Invalid loop counter register");
3416         $$ = bfin_gen_loop ($2, &$3, 0, 0);
3417         }
3418         | LOOP expr REG ASSIGN REG
3419         {
3420           if (IS_RELOC ($2) && IS_PREG ($5) && IS_CREG ($3))
3421             {
3422               notethat ("Loop: LOOP expr counters = pregs\n");
3423               $$ = bfin_gen_loop ($2, &$3, 1, &$5);
3424             }
3425           else
3426             return yyerror ("Bad register or values for LOOP");
3427         }
3428         | LOOP expr REG ASSIGN REG GREATER_GREATER expr
3429         {
3430           if (IS_RELOC ($2) && IS_PREG ($5) && IS_CREG ($3) && EXPR_VALUE ($7) == 1)
3431             {
3432               notethat ("Loop: LOOP expr counters = pregs >> 1\n");
3433               $$ = bfin_gen_loop ($2, &$3, 3, &$5);
3434             }
3435           else
3436             return yyerror ("Bad register or values for LOOP");
3437         }
3438 /* pseudoDEBUG.  */
3439
3440         | DBG
3441         {
3442           notethat ("pseudoDEBUG: DBG\n");
3443           $$ = bfin_gen_pseudodbg (3, 7, 0);
3444         }
3445         | DBG REG_A
3446         {
3447           notethat ("pseudoDEBUG: DBG REG_A\n");
3448           $$ = bfin_gen_pseudodbg (3, IS_A1 ($2), 0);
3449         }
3450         | DBG REG
3451         {
3452           notethat ("pseudoDEBUG: DBG allregs\n");
3453           $$ = bfin_gen_pseudodbg (0, $2.regno & CODE_MASK, $2.regno & CLASS_MASK);
3454         }
3455
3456         | DBGCMPLX LPAREN REG RPAREN
3457         {
3458           if (!IS_DREG ($3))
3459             return yyerror ("Dregs expected");
3460           notethat ("pseudoDEBUG: DBGCMPLX (dregs )\n");
3461           $$ = bfin_gen_pseudodbg (3, 6, $3.regno & CODE_MASK);
3462         }
3463
3464         | DBGHALT
3465         {
3466           notethat ("psedoDEBUG: DBGHALT\n");
3467           $$ = bfin_gen_pseudodbg (3, 5, 0);
3468         }
3469
3470         | DBGA LPAREN HALF_REG COMMA expr RPAREN
3471         {
3472           notethat ("pseudodbg_assert: DBGA (dregs_lo , uimm16 )\n");
3473           $$ = bfin_gen_pseudodbg_assert (IS_H ($3), &$3, uimm16 ($5));
3474         }
3475
3476         | DBGAH LPAREN REG COMMA expr RPAREN
3477         {
3478           notethat ("pseudodbg_assert: DBGAH (dregs , uimm16 )\n");
3479           $$ = bfin_gen_pseudodbg_assert (3, &$3, uimm16 ($5));
3480         }
3481
3482         | DBGAL LPAREN REG COMMA expr RPAREN
3483         {
3484           notethat ("psedodbg_assert: DBGAL (dregs , uimm16 )\n");
3485           $$ = bfin_gen_pseudodbg_assert (2, &$3, uimm16 ($5));
3486         }
3487
3488
3489 ;
3490
3491 /*  AUX RULES.  */
3492
3493 /*  Register rules.  */
3494
3495 REG_A:  REG_A_DOUBLE_ZERO
3496         {
3497         $$ = $1;
3498         }
3499         | REG_A_DOUBLE_ONE
3500         {
3501         $$ = $1;
3502         }
3503         ;
3504
3505
3506 /*  Modifiers. */
3507
3508 opt_mode:
3509         {
3510         $$.MM = 0;
3511         $$.mod = 0;
3512         }
3513         | LPAREN M COMMA MMOD RPAREN
3514         {
3515         $$.MM = 1;
3516         $$.mod = $4;
3517         }
3518         | LPAREN MMOD COMMA M RPAREN
3519         {
3520         $$.MM = 1;
3521         $$.mod = $2;
3522         }
3523         | LPAREN MMOD RPAREN
3524         {
3525         $$.MM = 0;
3526         $$.mod = $2;
3527         }
3528         | LPAREN M RPAREN
3529         {
3530         $$.MM = 1;
3531         $$.mod = 0;
3532         }
3533         ;
3534
3535 asr_asl: LPAREN ASL RPAREN
3536         {
3537         $$.r0 = 1;
3538         }
3539         | LPAREN ASR RPAREN
3540         {
3541         $$.r0 = 0;
3542         }
3543         ;
3544
3545 sco:
3546         {
3547         $$.s0 = 0;
3548         $$.x0 = 0;
3549         }
3550         | S
3551         {
3552         $$.s0 = 1;
3553         $$.x0 = 0;
3554         }
3555         | CO
3556         {
3557         $$.s0 = 0;
3558         $$.x0 = 1;
3559         }
3560         | SCO
3561         {
3562         $$.s0 = 1;
3563         $$.x0 = 1;
3564         }
3565         ;
3566
3567 asr_asl_0:
3568         ASL
3569         {
3570         $$.r0 = 1;
3571         }
3572         | ASR
3573         {
3574         $$.r0 = 0;
3575         }
3576         ;
3577
3578 amod0:
3579         {
3580         $$.s0 = 0;
3581         $$.x0 = 0;
3582         }
3583         | LPAREN sco RPAREN
3584         {
3585         $$.s0 = $2.s0;
3586         $$.x0 = $2.x0;
3587         }
3588         ;
3589
3590 amod1:
3591         {
3592         $$.s0 = 0;
3593         $$.x0 = 0;
3594         $$.aop = 0;
3595         }
3596         | LPAREN NS RPAREN
3597         {
3598         $$.s0 = 0;
3599         $$.x0 = 0;
3600         $$.aop = 1;
3601         }
3602         | LPAREN S RPAREN
3603         {
3604         $$.s0 = 1;
3605         $$.x0 = 0;
3606         $$.aop = 1;
3607         }
3608         ;
3609
3610 amod2:
3611         {
3612         $$.r0 = 0;
3613         $$.s0 = 0;
3614         $$.x0 = 0;
3615         }
3616         | LPAREN asr_asl_0 RPAREN
3617         {
3618         $$.r0 = 2 + $2.r0;
3619         $$.s0 = 0;
3620         $$.x0 = 0;
3621         }
3622         | LPAREN sco RPAREN
3623         {
3624         $$.r0 = 0;
3625         $$.s0 = $2.s0;
3626         $$.x0 = $2.x0;
3627         }
3628         | LPAREN asr_asl_0 COMMA sco RPAREN
3629         {
3630         $$.r0 = 2 + $2.r0;
3631         $$.s0 = $4.s0;
3632         $$.x0 = $4.x0;
3633         }
3634         | LPAREN sco COMMA asr_asl_0 RPAREN
3635         {
3636         $$.r0 = 2 + $4.r0;
3637         $$.s0 = $2.s0;
3638         $$.x0 = $2.x0;
3639         }
3640         ;
3641
3642 xpmod:
3643         {
3644         $$.r0 = 0;
3645         }
3646         | LPAREN Z RPAREN
3647         {
3648         $$.r0 = 0;
3649         }
3650         | LPAREN X RPAREN
3651         {
3652         $$.r0 = 1;
3653         }
3654         ;
3655
3656 xpmod1:
3657         {
3658         $$.r0 = 0;
3659         }
3660         | LPAREN X RPAREN
3661         {
3662         $$.r0 = 0;
3663         }
3664         | LPAREN Z RPAREN
3665         {
3666         $$.r0 = 1;
3667         }
3668         ;
3669
3670 vsmod:
3671         {
3672         $$.r0 = 0;
3673         $$.s0 = 0;
3674         $$.aop = 0;
3675         }
3676         | LPAREN NS RPAREN
3677         {
3678         $$.r0 = 0;
3679         $$.s0 = 0;
3680         $$.aop = 3;
3681         }
3682         | LPAREN S RPAREN
3683         {
3684         $$.r0 = 0;
3685         $$.s0 = 1;
3686         $$.aop = 3;
3687         }
3688         | LPAREN V RPAREN
3689         {
3690         $$.r0 = 1;
3691         $$.s0 = 0;
3692         $$.aop = 3;
3693         }
3694         | LPAREN V COMMA S RPAREN
3695         {
3696         $$.r0 = 1;
3697         $$.s0 = 1;
3698         }
3699         | LPAREN S COMMA V RPAREN
3700         {
3701         $$.r0 = 1;
3702         $$.s0 = 1;
3703         }
3704         ;
3705
3706 vmod:
3707         {
3708         $$.r0 = 0;
3709         }
3710         | LPAREN V RPAREN
3711         {
3712         $$.r0 = 1;
3713         }
3714         ;
3715
3716 smod:
3717         {
3718         $$.s0 = 0;
3719         }
3720         | LPAREN S RPAREN
3721         {
3722         $$.s0 = 1;
3723         }
3724         ;
3725
3726 searchmod:
3727           GE
3728         {
3729         $$.r0 = 1;
3730         }
3731         | GT
3732         {
3733         $$.r0 = 0;
3734         }
3735         | LE
3736         {
3737         $$.r0 = 3;
3738         }
3739         | LT
3740         {
3741         $$.r0 = 2;
3742         }
3743         ;
3744
3745 aligndir:
3746         {
3747         $$.r0 = 0;
3748         }
3749         | LPAREN R RPAREN
3750         {
3751         $$.r0 = 1;
3752         }
3753         ;
3754
3755 byteop_mod:
3756         LPAREN R RPAREN
3757         {
3758         $$.r0 = 0;
3759         $$.s0 = 1;
3760         }
3761         | LPAREN MMOD RPAREN
3762         {
3763         if ($2 != M_T)
3764           return yyerror ("Bad modifier");
3765         $$.r0 = 1;
3766         $$.s0 = 0;
3767         }
3768         | LPAREN MMOD COMMA R RPAREN
3769         {
3770         if ($2 != M_T)
3771           return yyerror ("Bad modifier");
3772         $$.r0 = 1;
3773         $$.s0 = 1;
3774         }
3775         | LPAREN R COMMA MMOD RPAREN
3776         {
3777         if ($4 != M_T)
3778           return yyerror ("Bad modifier");
3779         $$.r0 = 1;
3780         $$.s0 = 1;
3781         }
3782         ;
3783
3784
3785
3786 c_align:
3787         ALIGN8
3788         {
3789         $$.r0 = 0;
3790         }
3791         | ALIGN16
3792         {
3793         $$.r0 = 1;
3794         }
3795         | ALIGN24
3796         {
3797         $$.r0 = 2;
3798         }
3799         ;
3800
3801 w32_or_nothing:
3802         {
3803         $$.r0 = 0;
3804         }
3805         | LPAREN MMOD RPAREN
3806         {
3807           if ($2 == M_W32)
3808             $$.r0 = 1;
3809           else
3810             return yyerror ("Only (W32) allowed");
3811         }
3812         ;
3813
3814 iu_or_nothing:
3815         {
3816         $$.r0 = 1;
3817         }
3818         | LPAREN MMOD RPAREN
3819         {
3820           if ($2 == M_IU)
3821             $$.r0 = 3;
3822           else
3823             return yyerror ("(IU) expected");
3824         }
3825         ;
3826
3827 reg_with_predec: LBRACK _MINUS_MINUS REG RBRACK
3828         {
3829         $$ = $3;
3830         }
3831         ;
3832
3833 reg_with_postinc: LBRACK REG _PLUS_PLUS RBRACK
3834         {
3835         $$ = $2;
3836         }
3837         ;
3838
3839 /* Operators.  */
3840
3841 min_max:
3842         MIN
3843         {
3844         $$.r0 = 1;
3845         }
3846         | MAX
3847         {
3848         $$.r0 = 0;
3849         }
3850         ;
3851
3852 op_bar_op:
3853         _PLUS_BAR_PLUS
3854         {
3855         $$.r0 = 0;
3856         }
3857         | _PLUS_BAR_MINUS
3858         {
3859         $$.r0 = 1;
3860         }
3861         | _MINUS_BAR_PLUS
3862         {
3863         $$.r0 = 2;
3864         }
3865         | _MINUS_BAR_MINUS
3866         {
3867         $$.r0 = 3;
3868         }
3869         ;
3870
3871 plus_minus:
3872         PLUS
3873         {
3874         $$.r0 = 0;
3875         }
3876         | MINUS
3877         {
3878         $$.r0 = 1;
3879         }
3880         ;
3881
3882 rnd_op:
3883         LPAREN RNDH RPAREN
3884         {
3885           $$.r0 = 1;    /* HL.  */
3886           $$.s0 = 0;    /* s.  */
3887           $$.x0 = 0;    /* x.  */
3888           $$.aop = 0;   /* aop.  */
3889         }
3890
3891         | LPAREN TH RPAREN
3892         {
3893           $$.r0 = 1;    /* HL.  */
3894           $$.s0 = 0;    /* s.  */
3895           $$.x0 = 0;    /* x.  */
3896           $$.aop = 1;   /* aop.  */
3897         }
3898
3899         | LPAREN RNDL RPAREN
3900         {
3901           $$.r0 = 0;    /* HL.  */
3902           $$.s0 = 0;    /* s.  */
3903           $$.x0 = 0;    /* x.  */
3904           $$.aop = 0;   /* aop.  */
3905         }
3906
3907         | LPAREN TL RPAREN
3908         {
3909           $$.r0 = 0;    /* HL.  */
3910           $$.s0 = 0;    /* s.  */
3911           $$.x0 = 0;    /* x.  */
3912           $$.aop = 1;
3913         }
3914
3915         | LPAREN RNDH COMMA R RPAREN
3916         {
3917           $$.r0 = 1;    /* HL.  */
3918           $$.s0 = 1;    /* s.  */
3919           $$.x0 = 0;    /* x.  */
3920           $$.aop = 0;   /* aop.  */
3921         }
3922         | LPAREN TH COMMA R RPAREN
3923         {
3924           $$.r0 = 1;    /* HL.  */
3925           $$.s0 = 1;    /* s.  */
3926           $$.x0 = 0;    /* x.  */
3927           $$.aop = 1;   /* aop.  */
3928         }
3929         | LPAREN RNDL COMMA R RPAREN
3930         {
3931           $$.r0 = 0;    /* HL.  */
3932           $$.s0 = 1;    /* s.  */
3933           $$.x0 = 0;    /* x.  */
3934           $$.aop = 0;   /* aop.  */
3935         }
3936
3937         | LPAREN TL COMMA R RPAREN
3938         {
3939           $$.r0 = 0;    /* HL.  */
3940           $$.s0 = 1;    /* s.  */
3941           $$.x0 = 0;    /* x.  */
3942           $$.aop = 1;   /* aop.  */
3943         }
3944         ;
3945
3946 b3_op:
3947         LPAREN LO RPAREN
3948         {
3949           $$.s0 = 0;    /* s.  */
3950           $$.x0 = 0;    /* HL.  */
3951         }
3952         | LPAREN HI RPAREN
3953         {
3954           $$.s0 = 0;    /* s.  */
3955           $$.x0 = 1;    /* HL.  */
3956         }
3957         | LPAREN LO COMMA R RPAREN
3958         {
3959           $$.s0 = 1;    /* s.  */
3960           $$.x0 = 0;    /* HL.  */
3961         }
3962         | LPAREN HI COMMA R RPAREN
3963         {
3964           $$.s0 = 1;    /* s.  */
3965           $$.x0 = 1;    /* HL.  */
3966         }
3967         ;
3968
3969 post_op:
3970         {
3971         $$.x0 = 2;
3972         }
3973         | _PLUS_PLUS
3974         {
3975         $$.x0 = 0;
3976         }
3977         | _MINUS_MINUS
3978         {
3979         $$.x0 = 1;
3980         }
3981         ;
3982
3983 /* Assignments, Macfuncs.  */
3984
3985 a_assign:
3986         REG_A ASSIGN
3987         {
3988         $$ = $1;
3989         }
3990         ;
3991
3992 a_minusassign:
3993         REG_A _MINUS_ASSIGN
3994         {
3995         $$ = $1;
3996         }
3997         ;
3998
3999 a_plusassign:
4000         REG_A _PLUS_ASSIGN
4001         {
4002         $$ = $1;
4003         }
4004         ;
4005
4006 assign_macfunc:
4007         REG ASSIGN REG_A
4008         {
4009           if (IS_A1 ($3) && IS_EVEN ($1))
4010             return yyerror ("Cannot move A1 to even register");
4011           else if (!IS_A1 ($3) && !IS_EVEN ($1))
4012             return yyerror ("Cannot move A0 to odd register");
4013
4014           $$.w = 1;
4015           $$.P = 1;
4016           $$.n = IS_A1 ($3);
4017           $$.op = 3;
4018           $$.dst = $1;
4019           $$.s0.regno = 0;
4020           $$.s1.regno = 0;
4021         }
4022         | a_macfunc
4023         {
4024           $$ = $1;
4025           $$.w = 0; $$.P = 0;
4026           $$.dst.regno = 0;
4027         }
4028         | REG ASSIGN LPAREN a_macfunc RPAREN
4029         {
4030           if ($4.n && IS_EVEN ($1))
4031             return yyerror ("Cannot move A1 to even register");
4032           else if (!$4.n && !IS_EVEN ($1))
4033             return yyerror ("Cannot move A0 to odd register");
4034
4035           $$ = $4;
4036           $$.w = 1;
4037           $$.P = 1;
4038           $$.dst = $1;
4039         }
4040
4041         | HALF_REG ASSIGN LPAREN a_macfunc RPAREN
4042         {
4043           if ($4.n && !IS_H ($1))
4044             return yyerror ("Cannot move A1 to low half of register");
4045           else if (!$4.n && IS_H ($1))
4046             return yyerror ("Cannot move A0 to high half of register");
4047
4048           $$ = $4;
4049           $$.w = 1;
4050           $$.P = 0;
4051           $$.dst = $1;
4052         }
4053
4054         | HALF_REG ASSIGN REG_A
4055         {
4056           if (IS_A1 ($3) && !IS_H ($1))
4057             return yyerror ("Cannot move A1 to low half of register");
4058           else if (!IS_A1 ($3) && IS_H ($1))
4059             return yyerror ("Cannot move A0 to high half of register");
4060
4061           $$.w = 1;
4062           $$.P = 0;
4063           $$.n = IS_A1 ($3);
4064           $$.op = 3;
4065           $$.dst = $1;
4066           $$.s0.regno = 0;
4067           $$.s1.regno = 0;
4068         }
4069         ;
4070
4071 a_macfunc:
4072         a_assign multiply_halfregs
4073         {
4074           $$.n = IS_A1 ($1);
4075           $$.op = 0;
4076           $$.s0 = $2.s0;
4077           $$.s1 = $2.s1;
4078         }
4079         | a_plusassign multiply_halfregs
4080         {
4081           $$.n = IS_A1 ($1);
4082           $$.op = 1;
4083           $$.s0 = $2.s0;
4084           $$.s1 = $2.s1;
4085         }
4086         | a_minusassign multiply_halfregs
4087         {
4088           $$.n = IS_A1 ($1);
4089           $$.op = 2;
4090           $$.s0 = $2.s0;
4091           $$.s1 = $2.s1;
4092         }
4093         ;
4094
4095 multiply_halfregs:
4096         HALF_REG STAR HALF_REG
4097         {
4098           if (IS_DREG ($1) && IS_DREG ($3))
4099             {
4100               $$.s0 = $1;
4101               $$.s1 = $3;
4102             }
4103           else
4104             return yyerror ("Dregs expected");
4105         }
4106         ;
4107
4108 cc_op:
4109         ASSIGN
4110         {
4111         $$.r0 = 0;
4112         }
4113         | _BAR_ASSIGN
4114         {
4115         $$.r0 = 1;
4116         }
4117         | _AMPERSAND_ASSIGN
4118         {
4119         $$.r0 = 2;
4120         }
4121         | _CARET_ASSIGN
4122         {
4123         $$.r0 = 3;
4124         }
4125         ;
4126
4127 ccstat:
4128         CCREG cc_op STATUS_REG
4129         {
4130         $$.r0 = $3.regno;
4131         $$.x0 = $2.r0;
4132         $$.s0 = 0;
4133         }
4134         | CCREG cc_op V
4135         {
4136         $$.r0 = 0x18;
4137         $$.x0 = $2.r0;
4138         $$.s0 = 0;
4139         }
4140         | STATUS_REG cc_op CCREG
4141         {
4142         $$.r0 = $1.regno;
4143         $$.x0 = $2.r0;
4144         $$.s0 = 1;
4145         }
4146         | V cc_op CCREG
4147         {
4148         $$.r0 = 0x18;
4149         $$.x0 = $2.r0;
4150         $$.s0 = 1;
4151         }
4152         ;
4153
4154 /* Expressions and Symbols.  */
4155
4156 symbol: SYMBOL
4157         {
4158         Expr_Node_Value val;
4159         val.s_value = S_GET_NAME($1);
4160         $$ = Expr_Node_Create (Expr_Node_Reloc, val, NULL, NULL);
4161         }
4162         ;
4163
4164 any_gotrel:
4165         GOT
4166         { $$ = BFD_RELOC_BFIN_GOT; }
4167         | GOT17M4
4168         { $$ = BFD_RELOC_BFIN_GOT17M4; }
4169         | FUNCDESC_GOT17M4
4170         { $$ = BFD_RELOC_BFIN_FUNCDESC_GOT17M4; }
4171         ;
4172
4173 got:    symbol AT any_gotrel
4174         {
4175         Expr_Node_Value val;
4176         val.i_value = $3;
4177         $$ = Expr_Node_Create (Expr_Node_GOT_Reloc, val, $1, NULL);
4178         }
4179         ;
4180
4181 got_or_expr:    got
4182         {
4183         $$ = $1;
4184         }
4185         | expr
4186         {
4187         $$ = $1;
4188         }
4189         ;
4190
4191 pltpc :
4192         symbol AT PLTPC
4193         {
4194         $$ = $1;
4195         }
4196         ;
4197
4198 eterm: NUMBER
4199         {
4200         Expr_Node_Value val;
4201         val.i_value = $1;
4202         $$ = Expr_Node_Create (Expr_Node_Constant, val, NULL, NULL);
4203         }
4204         | symbol
4205         {
4206         $$ = $1;
4207         }
4208         | LPAREN expr_1 RPAREN
4209         {
4210         $$ = $2;
4211         }
4212         | TILDA expr_1
4213         {
4214         $$ = unary (Expr_Op_Type_COMP, $2);
4215         }
4216         | MINUS expr_1 %prec TILDA
4217         {
4218         $$ = unary (Expr_Op_Type_NEG, $2);
4219         }
4220         ;
4221
4222 expr: expr_1
4223         {
4224         $$ = $1;
4225         }
4226         ;
4227
4228 expr_1: expr_1 STAR expr_1
4229         {
4230         $$ = binary (Expr_Op_Type_Mult, $1, $3);
4231         }
4232         | expr_1 SLASH expr_1
4233         {
4234         $$ = binary (Expr_Op_Type_Div, $1, $3);
4235         }
4236         | expr_1 PERCENT expr_1
4237         {
4238         $$ = binary (Expr_Op_Type_Mod, $1, $3);
4239         }
4240         | expr_1 PLUS expr_1
4241         {
4242         $$ = binary (Expr_Op_Type_Add, $1, $3);
4243         }
4244         | expr_1 MINUS expr_1
4245         {
4246         $$ = binary (Expr_Op_Type_Sub, $1, $3);
4247         }
4248         | expr_1 LESS_LESS expr_1
4249         {
4250         $$ = binary (Expr_Op_Type_Lshift, $1, $3);
4251         }
4252         | expr_1 GREATER_GREATER expr_1
4253         {
4254         $$ = binary (Expr_Op_Type_Rshift, $1, $3);
4255         }
4256         | expr_1 AMPERSAND expr_1
4257         {
4258         $$ = binary (Expr_Op_Type_BAND, $1, $3);
4259         }
4260         | expr_1 CARET expr_1
4261         {
4262         $$ = binary (Expr_Op_Type_LOR, $1, $3);
4263         }
4264         | expr_1 BAR expr_1
4265         {
4266         $$ = binary (Expr_Op_Type_BOR, $1, $3);
4267         }
4268         | eterm
4269         {
4270         $$ = $1;
4271         }
4272         ;
4273
4274
4275 %%
4276
4277 EXPR_T
4278 mkexpr (int x, SYMBOL_T s)
4279 {
4280   EXPR_T e = (EXPR_T) ALLOCATE (sizeof (struct expression_cell));
4281   e->value = x;
4282   EXPR_SYMBOL(e) = s;
4283   return e;
4284 }
4285
4286 static int
4287 value_match (Expr_Node *expr, int sz, int sign, int mul, int issigned)
4288 {
4289   long umax = (1L << sz) - 1;
4290   long min = -1L << (sz - 1);
4291   long max = (1L << (sz - 1)) - 1;
4292
4293   long v = EXPR_VALUE (expr);
4294
4295   if ((v % mul) != 0)
4296     {
4297       error ("%s:%d: Value Error -- Must align to %d\n", __FILE__, __LINE__, mul);
4298       return 0;
4299     }
4300
4301   v /= mul;
4302
4303   if (sign)
4304     v = -v;
4305
4306   if (issigned)
4307     {
4308       if (v >= min && v <= max) return 1;
4309
4310 #ifdef DEBUG
4311       fprintf(stderr, "signed value %lx out of range\n", v * mul);
4312 #endif
4313       return 0;
4314     }
4315   if (v <= umax && v >= 0)
4316     return 1;
4317 #ifdef DEBUG
4318   fprintf(stderr, "unsigned value %lx out of range\n", v * mul);
4319 #endif
4320   return 0;
4321 }
4322
4323 /* Return the expression structure that allows symbol operations.
4324    If the left and right children are constants, do the operation.  */
4325 static Expr_Node *
4326 binary (Expr_Op_Type op, Expr_Node *x, Expr_Node *y)
4327 {
4328   Expr_Node_Value val;
4329
4330   if (x->type == Expr_Node_Constant && y->type == Expr_Node_Constant)
4331     {
4332       switch (op)
4333         {
4334         case Expr_Op_Type_Add:
4335           x->value.i_value += y->value.i_value;
4336           break;
4337         case Expr_Op_Type_Sub:
4338           x->value.i_value -= y->value.i_value;
4339           break;
4340         case Expr_Op_Type_Mult:
4341           x->value.i_value *= y->value.i_value;
4342           break;
4343         case Expr_Op_Type_Div:
4344           if (y->value.i_value == 0)
4345             error ("Illegal Expression:  Division by zero.");
4346           else
4347             x->value.i_value /= y->value.i_value;
4348           break;
4349         case Expr_Op_Type_Mod:
4350           x->value.i_value %= y->value.i_value;
4351           break;
4352         case Expr_Op_Type_Lshift:
4353           x->value.i_value <<= y->value.i_value;
4354           break;
4355         case Expr_Op_Type_Rshift:
4356           x->value.i_value >>= y->value.i_value;
4357           break;
4358         case Expr_Op_Type_BAND:
4359           x->value.i_value &= y->value.i_value;
4360           break;
4361         case Expr_Op_Type_BOR:
4362           x->value.i_value |= y->value.i_value;
4363           break;
4364         case Expr_Op_Type_BXOR:
4365           x->value.i_value ^= y->value.i_value;
4366           break;
4367         case Expr_Op_Type_LAND:
4368           x->value.i_value = x->value.i_value && y->value.i_value;
4369           break;
4370         case Expr_Op_Type_LOR:
4371           x->value.i_value = x->value.i_value || y->value.i_value;
4372           break;
4373
4374         default:
4375           error ("%s:%d: Internal compiler error\n", __FILE__, __LINE__);
4376         }
4377       return x;
4378     }
4379   /* Canonicalize order to EXPR OP CONSTANT.  */
4380   if (x->type == Expr_Node_Constant)
4381     {
4382       Expr_Node *t = x;
4383       x = y;
4384       y = t;
4385     }
4386   /* Canonicalize subtraction of const to addition of negated const.  */
4387   if (op == Expr_Op_Type_Sub && y->type == Expr_Node_Constant)
4388     {
4389       op = Expr_Op_Type_Add;
4390       y->value.i_value = -y->value.i_value;
4391     }
4392   if (y->type == Expr_Node_Constant && x->type == Expr_Node_Binop
4393       && x->Right_Child->type == Expr_Node_Constant)
4394     {
4395       if (op == x->value.op_value && x->value.op_value == Expr_Op_Type_Add)
4396         {
4397           x->Right_Child->value.i_value += y->value.i_value;
4398           return x;
4399         }
4400     }
4401
4402   /* Create a new expression structure.  */
4403   val.op_value = op;
4404   return Expr_Node_Create (Expr_Node_Binop, val, x, y);
4405 }
4406
4407 static Expr_Node *
4408 unary (Expr_Op_Type op, Expr_Node *x)
4409 {
4410   if (x->type == Expr_Node_Constant)
4411     {
4412       switch (op)
4413         {
4414         case Expr_Op_Type_NEG:
4415           x->value.i_value = -x->value.i_value;
4416           break;
4417         case Expr_Op_Type_COMP:
4418           x->value.i_value = ~x->value.i_value;
4419           break;
4420         default:
4421           error ("%s:%d: Internal compiler error\n", __FILE__, __LINE__);
4422         }
4423       return x;
4424     }
4425   else
4426     {
4427       /* Create a new expression structure.  */
4428       Expr_Node_Value val;
4429       val.op_value = op;
4430       return Expr_Node_Create (Expr_Node_Unop, val, x, NULL);
4431     }
4432 }
4433
4434 int debug_codeselection = 0;
4435 static void
4436 notethat (char *format, ...)
4437 {
4438   va_list ap;
4439   va_start (ap, format);
4440   if (debug_codeselection)
4441     {
4442       vfprintf (errorf, format, ap);
4443     }
4444   va_end (ap);
4445 }
4446
4447 #ifdef TEST
4448 main (int argc, char **argv)
4449 {
4450   yyparse();
4451 }
4452 #endif
4453