gas/config/bfin-parse.y

   1 /* bfin-parse.y  ADI Blackfin parser
   2    Copyright 2005, 2006, 2007, 2008, 2009, 2010
   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 *, int, int, int, int);
 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 *, ...);
 164
 165 char *current_inputline;
 166 extern char *yytext;
 167 int yyerror (char *);
 168
 169 void error (char *format, ...)
 170 {
 171     va_list ap;
 172     static char buffer[2000];
 173
 174     va_start (ap, format);
 175     vsprintf (buffer, format, ap);
 176     va_end (ap);
 177
 178     as_bad ("%s", 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 *exp, int from, int to, unsigned int mask)
 197 {
 198   int val = EXPR_VALUE (exp);
 199   if (exp->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 int
 226 valid_dreg_pair (Register *reg1, Expr_Node *reg2)
 227 {
 228   if (!IS_DREG (*reg1))
 229     {
 230       yyerror ("Dregs expected");
 231       return 0;
 232     }
 233
 234   if (reg1->regno != 1 && reg1->regno != 3)
 235     {
 236       yyerror ("Bad register pair");
 237       return 0;
 238     }
 239
 240   if (imm7 (reg2) != reg1->regno - 1)
 241     {
 242       yyerror ("Bad register pair");
 243       return 0;
 244     }
 245
 246   reg1->regno--;
 247   return 1;
 248 }
 249
 250 static int
 251 check_multiply_halfregs (Macfunc *aa, Macfunc *ab)
 252 {
 253   if ((!REG_EQUAL (aa->s0, ab->s0) && !REG_EQUAL (aa->s0, ab->s1))
 254       || (!REG_EQUAL (aa->s1, ab->s1) && !REG_EQUAL (aa->s1, ab->s0)))
 255     return yyerror ("Source multiplication register mismatch");
 256
 257   return 0;
 258 }
 259
 260
 261 /* Check mac option.  */
 262
 263 static int
 264 check_macfunc_option (Macfunc *a, Opt_mode *opt)
 265 {
 266   /* Default option is always valid.  */
 267   if (opt->mod == 0)
 268     return 0;
 269
 270   if ((a->w == 1 && a->P == 1
 271        && opt->mod != M_FU && opt->mod != M_IS && opt->mod != M_IU
 272        && opt->mod != M_S2RND && opt->mod != M_ISS2)
 273       || (a->w == 1 && a->P == 0
 274           && opt->mod != M_FU && opt->mod != M_IS && opt->mod != M_IU
 275           && opt->mod != M_T && opt->mod != M_TFU && opt->mod != M_S2RND
 276           && opt->mod != M_ISS2 && opt->mod != M_IH)
 277       || (a->w == 0 && a->P == 0
 278           && opt->mod != M_FU && opt->mod != M_IS && opt->mod != M_W32))
 279     return -1;
 280
 281   return 0;
 282 }
 283
 284 /* Check (vector) mac funcs and ops.  */
 285
 286 static int
 287 check_macfuncs (Macfunc *aa, Opt_mode *opa,
 288                 Macfunc *ab, Opt_mode *opb)
 289 {
 290   /* Variables for swapping.  */
 291   Macfunc mtmp;
 292   Opt_mode otmp;
 293
 294   /* The option mode should be put at the end of the second instruction
 295      of the vector except M, which should follow MAC1 instruction.  */
 296   if (opa->mod != 0)
 297     return yyerror ("Bad opt mode");
 298
 299   /* If a0macfunc comes before a1macfunc, swap them.  */
 300
 301   if (aa->n == 0)
 302     {
 303       /*  (M) is not allowed here.  */
 304       if (opa->MM != 0)
 305         return yyerror ("(M) not allowed with A0MAC");
 306       if (ab->n != 1)
 307         return yyerror ("Vector AxMACs can't be same");
 308
 309       mtmp = *aa; *aa = *ab; *ab = mtmp;
 310       otmp = *opa; *opa = *opb; *opb = otmp;
 311     }
 312   else
 313     {
 314       if (opb->MM != 0)
 315         return yyerror ("(M) not allowed with A0MAC");
 316       if (ab->n != 0)
 317         return yyerror ("Vector AxMACs can't be same");
 318     }
 319
 320   /*  If both ops are one of 0, 1, or 2, we have multiply_halfregs in both
 321   assignment_or_macfuncs.  */
 322   if ((aa->op == 0 || aa->op == 1 || aa->op == 2)
 323       && (ab->op == 0 || ab->op == 1 || ab->op == 2))
 324     {
 325       if (check_multiply_halfregs (aa, ab) < 0)
 326         return -1;
 327     }
 328   else
 329     {
 330       /*  Only one of the assign_macfuncs has a half reg multiply
 331       Evil trick: Just 'OR' their source register codes:
 332       We can do that, because we know they were initialized to 0
 333       in the rules that don't use multiply_halfregs.  */
 334       aa->s0.regno |= (ab->s0.regno & CODE_MASK);
 335       aa->s1.regno |= (ab->s1.regno & CODE_MASK);
 336     }
 337
 338   if (aa->w == ab->w  && aa->P != ab->P)
 339     {
 340       return yyerror ("macfuncs must differ");
 341       if (aa->w && (aa->dst.regno - ab->dst.regno != 1))
 342         return yyerror ("Destination Dregs must differ by one");
 343     }
 344
 345   /* Make sure mod flags get ORed, too.  */
 346   opb->mod |= opa->mod;
 347
 348   /* Check option.  */
 349   if (check_macfunc_option (aa, opb) < 0
 350       && check_macfunc_option (ab, opb) < 0)
 351     return yyerror ("bad option");
 352
 353   /* Make sure first macfunc has got both P flags ORed.  */
 354   aa->P |= ab->P;
 355
 356   return 0;
 357 }
 358
 359
 360 static int
 361 is_group1 (INSTR_T x)
 362 {
 363   /* Group1 is dpsLDST, LDSTpmod, LDST, LDSTiiFP, LDSTii.  */
 364   if ((x->value & 0xc000) == 0x8000 || (x->value == 0x0000))
 365     return 1;
 366
 367   return 0;
 368 }
 369
 370 static int
 371 is_group2 (INSTR_T x)
 372 {
 373   if ((((x->value & 0xfc00) == 0x9c00)  /* dspLDST.  */
 374        && !((x->value & 0xfde0) == 0x9c60)  /* dagMODim.  */
 375        && !((x->value & 0xfde0) == 0x9ce0)  /* dagMODim with bit rev.  */
 376        && !((x->value & 0xfde0) == 0x9d60)) /* pick dagMODik.  */
 377       || (x->value == 0x0000))
 378     return 1;
 379   return 0;
 380 }
 381
 382 static INSTR_T
 383 gen_multi_instr_1 (INSTR_T dsp32, INSTR_T dsp16_grp1, INSTR_T dsp16_grp2)
 384 {
 385   int mask1 = dsp32 ? insn_regmask (dsp32->value, dsp32->next->value) : 0;
 386   int mask2 = dsp16_grp1 ? insn_regmask (dsp16_grp1->value, 0) : 0;
 387   int mask3 = dsp16_grp2 ? insn_regmask (dsp16_grp2->value, 0) : 0;
 388
 389   if ((mask1 & mask2) || (mask1 & mask3) || (mask2 & mask3))
 390     yyerror ("resource conflict in multi-issue instruction");
 391
 392   /* Anomaly 05000074 */
 393   if (ENABLE_AC_05000074
 394       && dsp32 != NULL && dsp16_grp1 != NULL
 395       && (dsp32->value & 0xf780) == 0xc680
 396       && ((dsp16_grp1->value & 0xfe40) == 0x9240
 397           || (dsp16_grp1->value & 0xfe08) == 0xba08
 398           || (dsp16_grp1->value & 0xfc00) == 0xbc00))
 399     yyerror ("anomaly 05000074 - Multi-Issue Instruction with \
 400 dsp32shiftimm in slot1 and P-reg Store in slot2 Not Supported");
 401
 402   return bfin_gen_multi_instr (dsp32, dsp16_grp1, dsp16_grp2);
 403 }
 404
 405 %}
 406
 407 %union {
 408   INSTR_T instr;
 409   Expr_Node *expr;
 410   SYMBOL_T symbol;
 411   long value;
 412   Register reg;
 413   Macfunc macfunc;
 414   struct { int r0; int s0; int x0; int aop; } modcodes;
 415   struct { int r0; } r0;
 416   Opt_mode mod;
 417 }
 418
 419
 420 /* Tokens.  */
 421
 422 /* Vector Specific.  */
 423 %token BYTEOP16P BYTEOP16M
 424 %token BYTEOP1P BYTEOP2P BYTEOP2M BYTEOP3P
 425 %token BYTEUNPACK BYTEPACK
 426 %token PACK
 427 %token SAA
 428 %token ALIGN8 ALIGN16 ALIGN24
 429 %token VIT_MAX
 430 %token EXTRACT DEPOSIT EXPADJ SEARCH
 431 %token ONES SIGN SIGNBITS
 432
 433 /* Stack.  */
 434 %token LINK UNLINK
 435
 436 /* Registers.  */
 437 %token REG
 438 %token PC
 439 %token CCREG BYTE_DREG
 440 %token REG_A_DOUBLE_ZERO REG_A_DOUBLE_ONE
 441 %token A_ZERO_DOT_L A_ZERO_DOT_H A_ONE_DOT_L A_ONE_DOT_H
 442 %token HALF_REG
 443
 444 /* Progctrl.  */
 445 %token NOP
 446 %token RTI RTS RTX RTN RTE
 447 %token HLT IDLE
 448 %token STI CLI
 449 %token CSYNC SSYNC
 450 %token EMUEXCPT
 451 %token RAISE EXCPT
 452 %token LSETUP
 453 %token LOOP
 454 %token LOOP_BEGIN
 455 %token LOOP_END
 456 %token DISALGNEXCPT
 457 %token JUMP JUMP_DOT_S JUMP_DOT_L
 458 %token CALL
 459
 460 /* Emulator only.  */
 461 %token ABORT
 462
 463 /* Operators.  */
 464 %token NOT TILDA BANG
 465 %token AMPERSAND BAR
 466 %token PERCENT
 467 %token CARET
 468 %token BXOR
 469
 470 %token MINUS PLUS STAR SLASH
 471 %token NEG
 472 %token MIN MAX ABS
 473 %token DOUBLE_BAR
 474 %token _PLUS_BAR_PLUS _PLUS_BAR_MINUS _MINUS_BAR_PLUS _MINUS_BAR_MINUS
 475 %token _MINUS_MINUS _PLUS_PLUS
 476
 477 /* Shift/rotate ops.  */
 478 %token SHIFT LSHIFT ASHIFT BXORSHIFT
 479 %token _GREATER_GREATER_GREATER_THAN_ASSIGN
 480 %token ROT
 481 %token LESS_LESS GREATER_GREATER
 482 %token _GREATER_GREATER_GREATER
 483 %token _LESS_LESS_ASSIGN _GREATER_GREATER_ASSIGN
 484 %token DIVS DIVQ
 485
 486 /* In place operators.  */
 487 %token ASSIGN _STAR_ASSIGN
 488 %token _BAR_ASSIGN _CARET_ASSIGN _AMPERSAND_ASSIGN
 489 %token _MINUS_ASSIGN _PLUS_ASSIGN
 490
 491 /* Assignments, comparisons.  */
 492 %token _ASSIGN_BANG _LESS_THAN_ASSIGN _ASSIGN_ASSIGN
 493 %token GE LT LE GT
 494 %token LESS_THAN
 495
 496 /* Cache.  */
 497 %token FLUSHINV FLUSH
 498 %token IFLUSH PREFETCH
 499
 500 /* Misc.  */
 501 %token PRNT
 502 %token OUTC
 503 %token WHATREG
 504 %token TESTSET
 505
 506 /* Modifiers.  */
 507 %token ASL ASR
 508 %token B W
 509 %token NS S CO SCO
 510 %token TH TL
 511 %token BP
 512 %token BREV
 513 %token X Z
 514 %token M MMOD
 515 %token R RND RNDL RNDH RND12 RND20
 516 %token V
 517 %token LO HI
 518
 519 /* Bit ops.  */
 520 %token BITTGL BITCLR BITSET BITTST BITMUX
 521
 522 /* Debug.  */
 523 %token DBGAL DBGAH DBGHALT DBG DBGA DBGCMPLX
 524
 525 /* Semantic auxiliaries.  */
 526
 527 %token IF COMMA BY
 528 %token COLON SEMICOLON
 529 %token RPAREN LPAREN LBRACK RBRACK
 530 %token STATUS_REG
 531 %token MNOP
 532 %token SYMBOL NUMBER
 533 %token GOT GOT17M4 FUNCDESC_GOT17M4
 534 %token AT PLTPC
 535
 536 /* Types.  */
 537 %type <instr> asm
 538 %type <value> MMOD
 539 %type <mod> opt_mode
 540
 541 %type <value> NUMBER
 542 %type <r0> aligndir
 543 %type <modcodes> byteop_mod
 544 %type <reg> a_assign
 545 %type <reg> a_plusassign
 546 %type <reg> a_minusassign
 547 %type <macfunc> multiply_halfregs
 548 %type <macfunc> assign_macfunc
 549 %type <macfunc> a_macfunc
 550 %type <expr> expr_1
 551 %type <instr> asm_1
 552 %type <r0> vmod
 553 %type <modcodes> vsmod
 554 %type <modcodes> ccstat
 555 %type <r0> cc_op
 556 %type <reg> CCREG
 557 %type <reg> reg_with_postinc
 558 %type <reg> reg_with_predec
 559
 560 %type <r0> searchmod
 561 %type <expr> symbol
 562 %type <symbol> SYMBOL
 563 %type <expr> eterm
 564 %type <reg> REG
 565 %type <reg> BYTE_DREG
 566 %type <reg> REG_A_DOUBLE_ZERO
 567 %type <reg> REG_A_DOUBLE_ONE
 568 %type <reg> REG_A
 569 %type <reg> STATUS_REG
 570 %type <expr> expr
 571 %type <r0> xpmod
 572 %type <r0> xpmod1
 573 %type <modcodes> smod
 574 %type <modcodes> b3_op
 575 %type <modcodes> rnd_op
 576 %type <modcodes> post_op
 577 %type <reg> HALF_REG
 578 %type <r0> iu_or_nothing
 579 %type <r0> plus_minus
 580 %type <r0> asr_asl
 581 %type <r0> asr_asl_0
 582 %type <modcodes> sco
 583 %type <modcodes> amod0
 584 %type <modcodes> amod1
 585 %type <modcodes> amod2
 586 %type <r0> op_bar_op
 587 %type <r0> w32_or_nothing
 588 %type <r0> c_align
 589 %type <r0> min_max
 590 %type <expr> got
 591 %type <expr> got_or_expr
 592 %type <expr> pltpc
 593 %type <value> any_gotrel GOT GOT17M4 FUNCDESC_GOT17M4
 594
 595 /* Precedence rules.  */
 596 %left BAR
 597 %left CARET
 598 %left AMPERSAND
 599 %left LESS_LESS GREATER_GREATER
 600 %left PLUS MINUS
 601 %left STAR SLASH PERCENT
 602
 603 %right ASSIGN
 604
 605 %right TILDA BANG
 606 %start statement
 607 %%
 608 statement:
 609         | asm
 610         {
 611           insn = $1;
 612           if (insn == (INSTR_T) 0)
 613             return NO_INSN_GENERATED;
 614           else if (insn == (INSTR_T) - 1)
 615             return SEMANTIC_ERROR;
 616           else
 617             return INSN_GENERATED;
 618         }
 619         ;
 620
 621 asm: asm_1 SEMICOLON
 622         /* Parallel instructions.  */
 623         | asm_1 DOUBLE_BAR asm_1 DOUBLE_BAR asm_1 SEMICOLON
 624         {
 625           if (($1->value & 0xf800) == 0xc000)
 626             {
 627               if (is_group1 ($3) && is_group2 ($5))
 628                 $$ = gen_multi_instr_1 ($1, $3, $5);
 629               else if (is_group2 ($3) && is_group1 ($5))
 630                 $$ = gen_multi_instr_1 ($1, $5, $3);
 631               else
 632                 return yyerror ("Wrong 16 bit instructions groups, slot 2 and slot 3 must be 16-bit instrution group");
 633             }
 634           else if (($3->value & 0xf800) == 0xc000)
 635             {
 636               if (is_group1 ($1) && is_group2 ($5))
 637                 $$ = gen_multi_instr_1 ($3, $1, $5);
 638               else if (is_group2 ($1) && is_group1 ($5))
 639                 $$ = gen_multi_instr_1 ($3, $5, $1);
 640               else
 641                 return yyerror ("Wrong 16 bit instructions groups, slot 1 and slot 3 must be 16-bit instrution group");
 642             }
 643           else if (($5->value & 0xf800) == 0xc000)
 644             {
 645               if (is_group1 ($1) && is_group2 ($3))
 646                 $$ = gen_multi_instr_1 ($5, $1, $3);
 647               else if (is_group2 ($1) && is_group1 ($3))
 648                 $$ = gen_multi_instr_1 ($5, $3, $1);
 649               else
 650                 return yyerror ("Wrong 16 bit instructions groups, slot 1 and slot 2 must be 16-bit instrution group");
 651             }
 652           else
 653             error ("\nIllegal Multi Issue Construct, at least any one of the slot must be DSP32 instruction group\n");
 654         }
 655
 656         | asm_1 DOUBLE_BAR asm_1 SEMICOLON
 657         {
 658           if (($1->value & 0xf800) == 0xc000)
 659             {
 660               if (is_group1 ($3))
 661                 $$ = gen_multi_instr_1 ($1, $3, 0);
 662               else if (is_group2 ($3))
 663                 $$ = gen_multi_instr_1 ($1, 0, $3);
 664               else
 665                 return yyerror ("Wrong 16 bit instructions groups, slot 2 must be the 16-bit instruction group");
 666             }
 667           else if (($3->value & 0xf800) == 0xc000)
 668             {
 669               if (is_group1 ($1))
 670                 $$ = gen_multi_instr_1 ($3, $1, 0);
 671               else if (is_group2 ($1))
 672                 $$ = gen_multi_instr_1 ($3, 0, $1);
 673               else
 674                 return yyerror ("Wrong 16 bit instructions groups, slot 1 must be the 16-bit instruction group");
 675             }
 676           else if (is_group1 ($1) && is_group2 ($3))
 677               $$ = gen_multi_instr_1 (0, $1, $3);
 678           else if (is_group2 ($1) && is_group1 ($3))
 679             $$ = gen_multi_instr_1 (0, $3, $1);
 680           else
 681             return yyerror ("Wrong 16 bit instructions groups, slot 1 and slot 2 must be the 16-bit instruction group");
 682         }
 683         | error
 684         {
 685         $$ = 0;
 686         yyerror ("");
 687         yyerrok;
 688         }
 689         ;
 690
 691 /* DSPMAC.  */
 692
 693 asm_1:
 694         MNOP
 695         {
 696           $$ = DSP32MAC (3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
 697         }
 698         | assign_macfunc opt_mode
 699         {
 700           int op0, op1;
 701           int w0 = 0, w1 = 0;
 702           int h00, h10, h01, h11;
 703
 704           if (check_macfunc_option (&$1, &$2) < 0)
 705             return yyerror ("bad option");
 706
 707           if ($1.n == 0)
 708             {
 709               if ($2.MM)
 710                 return yyerror ("(m) not allowed with a0 unit");
 711               op1 = 3;
 712               op0 = $1.op;
 713               w1 = 0;
 714               w0 = $1.w;
 715               h00 = IS_H ($1.s0);
 716               h10 = IS_H ($1.s1);
 717               h01 = h11 = 0;
 718             }
 719           else
 720             {
 721               op1 = $1.op;
 722               op0 = 3;
 723               w1 = $1.w;
 724               w0 = 0;
 725               h00 = h10 = 0;
 726               h01 = IS_H ($1.s0);
 727               h11 = IS_H ($1.s1);
 728             }
 729           $$ = DSP32MAC (op1, $2.MM, $2.mod, w1, $1.P, h01, h11, h00, h10,
 730                          &$1.dst, op0, &$1.s0, &$1.s1, w0);
 731         }
 732
 733
 734 /* VECTOR MACs.  */
 735
 736         | assign_macfunc opt_mode COMMA assign_macfunc opt_mode
 737         {
 738           Register *dst;
 739
 740           if (check_macfuncs (&$1, &$2, &$4, &$5) < 0)
 741             return -1;
 742           notethat ("assign_macfunc (.), assign_macfunc (.)\n");
 743
 744           if ($1.w)
 745             dst = &$1.dst;
 746           else
 747             dst = &$4.dst;
 748
 749           $$ = DSP32MAC ($1.op, $2.MM, $5.mod, $1.w, $1.P,
 750                          IS_H ($1.s0),  IS_H ($1.s1), IS_H ($4.s0), IS_H ($4.s1),
 751                          dst, $4.op, &$1.s0, &$1.s1, $4.w);
 752         }
 753
 754 /* DSPALU.  */
 755
 756         | DISALGNEXCPT
 757         {
 758           notethat ("dsp32alu: DISALGNEXCPT\n");
 759           $$ = DSP32ALU (18, 0, 0, 0, 0, 0, 0, 0, 3);
 760         }
 761         | REG ASSIGN LPAREN a_plusassign REG_A RPAREN
 762         {
 763           if (IS_DREG ($1) && !IS_A1 ($4) && IS_A1 ($5))
 764             {
 765               notethat ("dsp32alu: dregs = ( A0 += A1 )\n");
 766               $$ = DSP32ALU (11, 0, 0, &$1, 0, 0, 0, 0, 0);
 767             }
 768           else
 769             return yyerror ("Register mismatch");
 770         }
 771         | HALF_REG ASSIGN LPAREN a_plusassign REG_A RPAREN
 772         {
 773           if (!IS_A1 ($4) && IS_A1 ($5))
 774             {
 775               notethat ("dsp32alu: dregs_half = ( A0 += A1 )\n");
 776               $$ = DSP32ALU (11, IS_H ($1), 0, &$1, 0, 0, 0, 0, 1);
 777             }
 778           else
 779             return yyerror ("Register mismatch");
 780         }
 781         | A_ZERO_DOT_H ASSIGN HALF_REG
 782         {
 783           notethat ("dsp32alu: A_ZERO_DOT_H = dregs_hi\n");
 784           $$ = DSP32ALU (9, IS_H ($3), 0, 0, &$3, 0, 0, 0, 0);
 785         }
 786         | A_ONE_DOT_H ASSIGN HALF_REG
 787         {
 788           notethat ("dsp32alu: A_ZERO_DOT_H = dregs_hi\n");
 789           $$ = DSP32ALU (9, IS_H ($3), 0, 0, &$3, 0, 0, 0, 2);
 790         }
 791         | LPAREN REG COMMA REG RPAREN ASSIGN BYTEOP16P LPAREN REG
 792           COLON expr COMMA REG COLON expr RPAREN aligndir
 793         {
 794           if (!IS_DREG ($2) || !IS_DREG ($4))
 795             return yyerror ("Dregs expected");
 796           else if (!valid_dreg_pair (&$9, $11))
 797             return yyerror ("Bad dreg pair");
 798           else if (!valid_dreg_pair (&$13, $15))
 799             return yyerror ("Bad dreg pair");
 800           else
 801             {
 802               notethat ("dsp32alu: (dregs , dregs ) = BYTEOP16P (dregs_pair , dregs_pair ) (half)\n");
 803               $$ = DSP32ALU (21, 0, &$2, &$4, &$9, &$13, $17.r0, 0, 0);
 804             }
 805         }
 806
 807         | LPAREN REG COMMA REG RPAREN ASSIGN BYTEOP16M LPAREN REG COLON expr COMMA
 808           REG COLON expr RPAREN aligndir
 809         {
 810           if (!IS_DREG ($2) || !IS_DREG ($4))
 811             return yyerror ("Dregs expected");
 812           else if (!valid_dreg_pair (&$9, $11))
 813             return yyerror ("Bad dreg pair");
 814           else if (!valid_dreg_pair (&$13, $15))
 815             return yyerror ("Bad dreg pair");
 816           else
 817             {
 818               notethat ("dsp32alu: (dregs , dregs ) = BYTEOP16M (dregs_pair , dregs_pair ) (aligndir)\n");
 819               $$ = DSP32ALU (21, 0, &$2, &$4, &$9, &$13, $17.r0, 0, 1);
 820             }
 821         }
 822
 823         | LPAREN REG COMMA REG RPAREN ASSIGN BYTEUNPACK REG COLON expr aligndir
 824         {
 825           if (!IS_DREG ($2) || !IS_DREG ($4))
 826             return yyerror ("Dregs expected");
 827           else if (!valid_dreg_pair (&$8, $10))
 828             return yyerror ("Bad dreg pair");
 829           else
 830             {
 831               notethat ("dsp32alu: (dregs , dregs ) = BYTEUNPACK dregs_pair (aligndir)\n");
 832               $$ = DSP32ALU (24, 0, &$2, &$4, &$8, 0, $11.r0, 0, 1);
 833             }
 834         }
 835         | LPAREN REG COMMA REG RPAREN ASSIGN SEARCH REG LPAREN searchmod RPAREN
 836         {
 837           if (IS_DREG ($2) && IS_DREG ($4) && IS_DREG ($8))
 838             {
 839               notethat ("dsp32alu: (dregs , dregs ) = SEARCH dregs (searchmod)\n");
 840               $$ = DSP32ALU (13, 0, &$2, &$4, &$8, 0, 0, 0, $10.r0);
 841             }
 842           else
 843             return yyerror ("Register mismatch");
 844         }
 845         | REG ASSIGN A_ONE_DOT_L PLUS A_ONE_DOT_H COMMA
 846           REG ASSIGN A_ZERO_DOT_L PLUS A_ZERO_DOT_H
 847         {
 848           if (IS_DREG ($1) && IS_DREG ($7))
 849             {
 850               notethat ("dsp32alu: dregs = A1.l + A1.h, dregs = A0.l + A0.h  \n");
 851               $$ = DSP32ALU (12, 0, &$1, &$7, 0, 0, 0, 0, 1);
 852             }
 853           else
 854             return yyerror ("Register mismatch");
 855         }
 856
 857
 858         | REG ASSIGN REG_A PLUS REG_A COMMA REG ASSIGN REG_A MINUS REG_A amod1
 859         {
 860           if (IS_DREG ($1) && IS_DREG ($7) && !REG_SAME ($3, $5)
 861               && IS_A1 ($9) && !IS_A1 ($11))
 862             {
 863               notethat ("dsp32alu: dregs = A1 + A0 , dregs = A1 - A0 (amod1)\n");
 864               $$ = DSP32ALU (17, 0, &$1, &$7, 0, 0, $12.s0, $12.x0, 0);
 865
 866             }
 867           else if (IS_DREG ($1) && IS_DREG ($7) && !REG_SAME ($3, $5)
 868                    && !IS_A1 ($9) && IS_A1 ($11))
 869             {
 870               notethat ("dsp32alu: dregs = A0 + A1 , dregs = A0 - A1 (amod1)\n");
 871               $$ = DSP32ALU (17, 0, &$1, &$7, 0, 0, $12.s0, $12.x0, 1);
 872             }
 873           else
 874             return yyerror ("Register mismatch");
 875         }
 876
 877         | REG ASSIGN REG plus_minus REG COMMA REG ASSIGN REG plus_minus REG amod1
 878         {
 879           if ($4.r0 == $10.r0)
 880             return yyerror ("Operators must differ");
 881
 882           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5)
 883               && REG_SAME ($3, $9) && REG_SAME ($5, $11))
 884             {
 885               notethat ("dsp32alu: dregs = dregs + dregs,"
 886                        "dregs = dregs - dregs (amod1)\n");
 887               $$ = DSP32ALU (4, 0, &$1, &$7, &$3, &$5, $12.s0, $12.x0, 2);
 888             }
 889           else
 890             return yyerror ("Register mismatch");
 891         }
 892
 893 /*  Bar Operations.  */
 894
 895         | REG ASSIGN REG op_bar_op REG COMMA REG ASSIGN REG op_bar_op REG amod2
 896         {
 897           if (!REG_SAME ($3, $9) || !REG_SAME ($5, $11))
 898             return yyerror ("Differing source registers");
 899
 900           if (!IS_DREG ($1) || !IS_DREG ($3) || !IS_DREG ($5) || !IS_DREG ($7))
 901             return yyerror ("Dregs expected");
 902
 903
 904           if ($4.r0 == 1 && $10.r0 == 2)
 905             {
 906               notethat ("dsp32alu:  dregs = dregs .|. dregs , dregs = dregs .|. dregs (amod2)\n");
 907               $$ = DSP32ALU (1, 1, &$1, &$7, &$3, &$5, $12.s0, $12.x0, $12.r0);
 908             }
 909           else if ($4.r0 == 0 && $10.r0 == 3)
 910             {
 911               notethat ("dsp32alu:  dregs = dregs .|. dregs , dregs = dregs .|. dregs (amod2)\n");
 912               $$ = DSP32ALU (1, 0, &$1, &$7, &$3, &$5, $12.s0, $12.x0, $12.r0);
 913             }
 914           else
 915             return yyerror ("Bar operand mismatch");
 916         }
 917
 918         | REG ASSIGN ABS REG vmod
 919         {
 920           int op;
 921
 922           if (IS_DREG ($1) && IS_DREG ($4))
 923             {
 924               if ($5.r0)
 925                 {
 926                   notethat ("dsp32alu: dregs = ABS dregs (v)\n");
 927                   op = 6;
 928                 }
 929               else
 930                 {
 931                   /* Vector version of ABS.  */
 932                   notethat ("dsp32alu: dregs = ABS dregs\n");
 933                   op = 7;
 934                 }
 935               $$ = DSP32ALU (op, 0, 0, &$1, &$4, 0, 0, 0, 2);
 936             }
 937           else
 938             return yyerror ("Dregs expected");
 939         }
 940         | a_assign ABS REG_A
 941         {
 942           notethat ("dsp32alu: Ax = ABS Ax\n");
 943           $$ = DSP32ALU (16, IS_A1 ($1), 0, 0, 0, 0, 0, 0, IS_A1 ($3));
 944         }
 945         | A_ZERO_DOT_L ASSIGN HALF_REG
 946         {
 947           if (IS_DREG_L ($3))
 948             {
 949               notethat ("dsp32alu: A0.l = reg_half\n");
 950               $$ = DSP32ALU (9, IS_H ($3), 0, 0, &$3, 0, 0, 0, 0);
 951             }
 952           else
 953             return yyerror ("A0.l = Rx.l expected");
 954         }
 955         | A_ONE_DOT_L ASSIGN HALF_REG
 956         {
 957           if (IS_DREG_L ($3))
 958             {
 959               notethat ("dsp32alu: A1.l = reg_half\n");
 960               $$ = DSP32ALU (9, IS_H ($3), 0, 0, &$3, 0, 0, 0, 2);
 961             }
 962           else
 963             return yyerror ("A1.l = Rx.l expected");
 964         }
 965
 966         | REG ASSIGN c_align LPAREN REG COMMA REG RPAREN
 967         {
 968           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
 969             {
 970               notethat ("dsp32shift: dregs = ALIGN8 (dregs , dregs )\n");
 971               $$ = DSP32SHIFT (13, &$1, &$7, &$5, $3.r0, 0);
 972             }
 973           else
 974             return yyerror ("Dregs expected");
 975         }
 976
 977         | REG ASSIGN BYTEOP1P LPAREN REG COLON expr COMMA REG COLON expr RPAREN byteop_mod
 978         {
 979           if (!IS_DREG ($1))
 980             return yyerror ("Dregs expected");
 981           else if (!valid_dreg_pair (&$5, $7))
 982             return yyerror ("Bad dreg pair");
 983           else if (!valid_dreg_pair (&$9, $11))
 984             return yyerror ("Bad dreg pair");
 985           else
 986             {
 987               notethat ("dsp32alu: dregs = BYTEOP1P (dregs_pair , dregs_pair ) (T)\n");
 988               $$ = DSP32ALU (20, 0, 0, &$1, &$5, &$9, $13.s0, 0, $13.r0);
 989             }
 990         }
 991         | REG ASSIGN BYTEOP1P LPAREN REG COLON expr COMMA REG COLON expr RPAREN
 992         {
 993           if (!IS_DREG ($1))
 994             return yyerror ("Dregs expected");
 995           else if (!valid_dreg_pair (&$5, $7))
 996             return yyerror ("Bad dreg pair");
 997           else if (!valid_dreg_pair (&$9, $11))
 998             return yyerror ("Bad dreg pair");
 999           else
1000             {
1001               notethat ("dsp32alu: dregs = BYTEOP1P (dregs_pair , dregs_pair ) (T)\n");
1002               $$ = DSP32ALU (20, 0, 0, &$1, &$5, &$9, 0, 0, 0);
1003             }
1004         }
1005
1006         | REG ASSIGN BYTEOP2P LPAREN REG COLON expr COMMA REG COLON expr RPAREN
1007           rnd_op
1008         {
1009           if (!IS_DREG ($1))
1010             return yyerror ("Dregs expected");
1011           else if (!valid_dreg_pair (&$5, $7))
1012             return yyerror ("Bad dreg pair");
1013           else if (!valid_dreg_pair (&$9, $11))
1014             return yyerror ("Bad dreg pair");
1015           else
1016             {
1017               notethat ("dsp32alu: dregs = BYTEOP2P (dregs_pair , dregs_pair ) (rnd_op)\n");
1018               $$ = DSP32ALU (22, $13.r0, 0, &$1, &$5, &$9, $13.s0, $13.x0, $13.aop);
1019             }
1020         }
1021
1022         | REG ASSIGN BYTEOP2M LPAREN REG COLON expr COMMA REG COLON expr RPAREN
1023           rnd_op
1024         {
1025           if (!IS_DREG ($1))
1026             return yyerror ("Dregs expected");
1027           else if (!valid_dreg_pair (&$5, $7))
1028             return yyerror ("Bad dreg pair");
1029           else if (!valid_dreg_pair (&$9, $11))
1030             return yyerror ("Bad dreg pair");
1031           else
1032             {
1033               notethat ("dsp32alu: dregs = BYTEOP2P (dregs_pair , dregs_pair ) (rnd_op)\n");
1034               $$ = DSP32ALU (22, $13.r0, 0, &$1, &$5, &$9, $13.s0, 0, $13.x0);
1035             }
1036         }
1037
1038         | REG ASSIGN BYTEOP3P LPAREN REG COLON expr COMMA REG COLON expr RPAREN
1039           b3_op
1040         {
1041           if (!IS_DREG ($1))
1042             return yyerror ("Dregs expected");
1043           else if (!valid_dreg_pair (&$5, $7))
1044             return yyerror ("Bad dreg pair");
1045           else if (!valid_dreg_pair (&$9, $11))
1046             return yyerror ("Bad dreg pair");
1047           else
1048             {
1049               notethat ("dsp32alu: dregs = BYTEOP3P (dregs_pair , dregs_pair ) (b3_op)\n");
1050               $$ = DSP32ALU (23, $13.x0, 0, &$1, &$5, &$9, $13.s0, 0, 0);
1051             }
1052         }
1053
1054         | REG ASSIGN BYTEPACK LPAREN REG COMMA REG RPAREN
1055         {
1056           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
1057             {
1058               notethat ("dsp32alu: dregs = BYTEPACK (dregs , dregs )\n");
1059               $$ = DSP32ALU (24, 0, 0, &$1, &$5, &$7, 0, 0, 0);
1060             }
1061           else
1062             return yyerror ("Dregs expected");
1063         }
1064
1065         | HALF_REG ASSIGN HALF_REG ASSIGN SIGN LPAREN HALF_REG RPAREN STAR
1066           HALF_REG PLUS SIGN LPAREN HALF_REG RPAREN STAR HALF_REG
1067         {
1068           if (IS_HCOMPL ($1, $3) && IS_HCOMPL ($7, $14) && IS_HCOMPL ($10, $17))
1069             {
1070               notethat ("dsp32alu:      dregs_hi = dregs_lo ="
1071                        "SIGN (dregs_hi) * dregs_hi + "
1072                        "SIGN (dregs_lo) * dregs_lo \n");
1073
1074                 $$ = DSP32ALU (12, 0, 0, &$1, &$7, &$10, 0, 0, 0);
1075             }
1076           else
1077             return yyerror ("Dregs expected");
1078         }
1079         | REG ASSIGN REG plus_minus REG amod1
1080         {
1081           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1082             {
1083               if ($6.aop == 0)
1084                 {
1085                   /* No saturation flag specified, generate the 16 bit variant.  */
1086                   notethat ("COMP3op: dregs = dregs +- dregs\n");
1087                   $$ = COMP3OP (&$1, &$3, &$5, $4.r0);
1088                 }
1089               else
1090                 {
1091                  /* Saturation flag specified, generate the 32 bit variant.  */
1092                  notethat ("dsp32alu: dregs = dregs +- dregs (amod1)\n");
1093                  $$ = DSP32ALU (4, 0, 0, &$1, &$3, &$5, $6.s0, $6.x0, $4.r0);
1094                 }
1095             }
1096           else
1097             if (IS_PREG ($1) && IS_PREG ($3) && IS_PREG ($5) && $4.r0 == 0)
1098               {
1099                 notethat ("COMP3op: pregs = pregs + pregs\n");
1100                 $$ = COMP3OP (&$1, &$3, &$5, 5);
1101               }
1102             else
1103               return yyerror ("Dregs expected");
1104         }
1105         | REG ASSIGN min_max LPAREN REG COMMA REG RPAREN vmod
1106         {
1107           int op;
1108
1109           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
1110             {
1111               if ($9.r0)
1112                 op = 6;
1113               else
1114                 op = 7;
1115
1116               notethat ("dsp32alu: dregs = {MIN|MAX} (dregs, dregs)\n");
1117               $$ = DSP32ALU (op, 0, 0, &$1, &$5, &$7, 0, 0, $3.r0);
1118             }
1119           else
1120             return yyerror ("Dregs expected");
1121         }
1122
1123         | a_assign MINUS REG_A
1124         {
1125           notethat ("dsp32alu: Ax = - Ax\n");
1126           $$ = DSP32ALU (14, IS_A1 ($1), 0, 0, 0, 0, 0, 0, IS_A1 ($3));
1127         }
1128         | HALF_REG ASSIGN HALF_REG plus_minus HALF_REG amod1
1129         {
1130           notethat ("dsp32alu: dregs_lo = dregs_lo +- dregs_lo (amod1)\n");
1131           $$ = DSP32ALU (2 | $4.r0, IS_H ($1), 0, &$1, &$3, &$5,
1132                          $6.s0, $6.x0, HL2 ($3, $5));
1133         }
1134         | a_assign a_assign expr
1135         {
1136           if (EXPR_VALUE ($3) == 0 && !REG_SAME ($1, $2))
1137             {
1138               notethat ("dsp32alu: A1 = A0 = 0\n");
1139               $$ = DSP32ALU (8, 0, 0, 0, 0, 0, 0, 0, 2);
1140             }
1141           else
1142             return yyerror ("Bad value, 0 expected");
1143         }
1144
1145         /* Saturating.  */
1146         | a_assign REG_A LPAREN S RPAREN
1147         {
1148           if (REG_SAME ($1, $2))
1149             {
1150               notethat ("dsp32alu: Ax = Ax (S)\n");
1151               $$ = DSP32ALU (8, 0, 0, 0, 0, 0, 1, 0, IS_A1 ($1));
1152             }
1153           else
1154             return yyerror ("Registers must be equal");
1155         }
1156
1157         | HALF_REG ASSIGN REG LPAREN RND RPAREN
1158         {
1159           if (IS_DREG ($3))
1160             {
1161               notethat ("dsp32alu: dregs_half = dregs (RND)\n");
1162               $$ = DSP32ALU (12, IS_H ($1), 0, &$1, &$3, 0, 0, 0, 3);
1163             }
1164           else
1165             return yyerror ("Dregs expected");
1166         }
1167
1168         | HALF_REG ASSIGN REG plus_minus REG LPAREN RND12 RPAREN
1169         {
1170           if (IS_DREG ($3) && IS_DREG ($5))
1171             {
1172               notethat ("dsp32alu: dregs_half = dregs (+-) dregs (RND12)\n");
1173               $$ = DSP32ALU (5, IS_H ($1), 0, &$1, &$3, &$5, 0, 0, $4.r0);
1174             }
1175           else
1176             return yyerror ("Dregs expected");
1177         }
1178
1179         | HALF_REG ASSIGN REG plus_minus REG LPAREN RND20 RPAREN
1180         {
1181           if (IS_DREG ($3) && IS_DREG ($5))
1182             {
1183               notethat ("dsp32alu: dregs_half = dregs -+ dregs (RND20)\n");
1184               $$ = DSP32ALU (5, IS_H ($1), 0, &$1, &$3, &$5, 0, 1, $4.r0 | 2);
1185             }
1186           else
1187             return yyerror ("Dregs expected");
1188         }
1189
1190         | a_assign REG_A
1191         {
1192           if (!REG_SAME ($1, $2))
1193             {
1194               notethat ("dsp32alu: An = Am\n");
1195               $$ = DSP32ALU (8, 0, 0, 0, 0, 0, IS_A1 ($1), 0, 3);
1196             }
1197           else
1198             return yyerror ("Accu reg arguments must differ");
1199         }
1200
1201         | a_assign REG
1202         {
1203           if (IS_DREG ($2))
1204             {
1205               notethat ("dsp32alu: An = dregs\n");
1206               $$ = DSP32ALU (9, 0, 0, 0, &$2, 0, 1, 0, IS_A1 ($1) << 1);
1207             }
1208           else
1209             return yyerror ("Dregs expected");
1210         }
1211
1212         | REG ASSIGN HALF_REG xpmod
1213         {
1214           if (!IS_H ($3))
1215             {
1216               if ($1.regno == REG_A0x && IS_DREG ($3))
1217                 {
1218                   notethat ("dsp32alu: A0.x = dregs_lo\n");
1219                   $$ = DSP32ALU (9, 0, 0, 0, &$3, 0, 0, 0, 1);
1220                 }
1221               else if ($1.regno == REG_A1x && IS_DREG ($3))
1222                 {
1223                   notethat ("dsp32alu: A1.x = dregs_lo\n");
1224                   $$ = DSP32ALU (9, 0, 0, 0, &$3, 0, 0, 0, 3);
1225                 }
1226               else if (IS_DREG ($1) && IS_DREG ($3))
1227                 {
1228                   notethat ("ALU2op: dregs = dregs_lo\n");
1229                   $$ = ALU2OP (&$1, &$3, 10 | ($4.r0 ? 0: 1));
1230                 }
1231               else
1232                 return yyerror ("Register mismatch");
1233             }
1234           else
1235             return yyerror ("Low reg expected");
1236         }
1237
1238         | HALF_REG ASSIGN expr
1239         {
1240           notethat ("LDIMMhalf: pregs_half = imm16\n");
1241
1242           if (!IS_DREG ($1) && !IS_PREG ($1) && !IS_IREG ($1)
1243               && !IS_MREG ($1) && !IS_BREG ($1) && !IS_LREG ($1))
1244             return yyerror ("Wrong register for load immediate");
1245
1246           if (!IS_IMM ($3, 16) && !IS_UIMM ($3, 16))
1247             return yyerror ("Constant out of range");
1248
1249           $$ = LDIMMHALF_R (&$1, IS_H ($1), 0, 0, $3);
1250         }
1251
1252         | a_assign expr
1253         {
1254           notethat ("dsp32alu: An = 0\n");
1255
1256           if (imm7 ($2) != 0)
1257             return yyerror ("0 expected");
1258
1259           $$ = DSP32ALU (8, 0, 0, 0, 0, 0, 0, 0, IS_A1 ($1));
1260         }
1261
1262         | REG ASSIGN expr xpmod1
1263         {
1264           if (!IS_DREG ($1) && !IS_PREG ($1) && !IS_IREG ($1)
1265               && !IS_MREG ($1) && !IS_BREG ($1) && !IS_LREG ($1))
1266             return yyerror ("Wrong register for load immediate");
1267
1268           if ($4.r0 == 0)
1269             {
1270               /* 7 bit immediate value if possible.
1271                  We will check for that constant value for efficiency
1272                  If it goes to reloc, it will be 16 bit.  */
1273               if (IS_CONST ($3) && IS_IMM ($3, 7) && IS_DREG ($1))
1274                 {
1275                   notethat ("COMPI2opD: dregs = imm7 (x) \n");
1276                   $$ = COMPI2OPD (&$1, imm7 ($3), 0);
1277                 }
1278               else if (IS_CONST ($3) && IS_IMM ($3, 7) && IS_PREG ($1))
1279                 {
1280                   notethat ("COMPI2opP: pregs = imm7 (x)\n");
1281                   $$ = COMPI2OPP (&$1, imm7 ($3), 0);
1282                 }
1283               else
1284                 {
1285                   if (IS_CONST ($3) && !IS_IMM ($3, 16))
1286                     return yyerror ("Immediate value out of range");
1287
1288                   notethat ("LDIMMhalf: regs = luimm16 (x)\n");
1289                   /* reg, H, S, Z.   */
1290                   $$ = LDIMMHALF_R5 (&$1, 0, 1, 0, $3);
1291                 }
1292             }
1293           else
1294             {
1295               /* (z) There is no 7 bit zero extended instruction.
1296               If the expr is a relocation, generate it.   */
1297
1298               if (IS_CONST ($3) && !IS_UIMM ($3, 16))
1299                 return yyerror ("Immediate value out of range");
1300
1301               notethat ("LDIMMhalf: regs = luimm16 (x)\n");
1302               /* reg, H, S, Z.  */
1303               $$ = LDIMMHALF_R5 (&$1, 0, 0, 1, $3);
1304             }
1305         }
1306
1307         | HALF_REG ASSIGN REG
1308         {
1309           if (IS_H ($1))
1310             return yyerror ("Low reg expected");
1311
1312           if (IS_DREG ($1) && $3.regno == REG_A0x)
1313             {
1314               notethat ("dsp32alu: dregs_lo = A0.x\n");
1315               $$ = DSP32ALU (10, 0, 0, &$1, 0, 0, 0, 0, 0);
1316             }
1317           else if (IS_DREG ($1) && $3.regno == REG_A1x)
1318             {
1319               notethat ("dsp32alu: dregs_lo = A1.x\n");
1320               $$ = DSP32ALU (10, 0, 0, &$1, 0, 0, 0, 0, 1);
1321             }
1322           else
1323             return yyerror ("Register mismatch");
1324         }
1325
1326         | REG ASSIGN REG op_bar_op REG amod0
1327         {
1328           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1329             {
1330               notethat ("dsp32alu: dregs = dregs .|. dregs (amod0)\n");
1331               $$ = DSP32ALU (0, 0, 0, &$1, &$3, &$5, $6.s0, $6.x0, $4.r0);
1332             }
1333           else
1334             return yyerror ("Register mismatch");
1335         }
1336
1337         | REG ASSIGN BYTE_DREG xpmod
1338         {
1339           if (IS_DREG ($1) && IS_DREG ($3))
1340             {
1341               notethat ("ALU2op: dregs = dregs_byte\n");
1342               $$ = ALU2OP (&$1, &$3, 12 | ($4.r0 ? 0: 1));
1343             }
1344           else
1345             return yyerror ("Register mismatch");
1346         }
1347
1348         | a_assign ABS REG_A COMMA a_assign ABS REG_A
1349         {
1350           if (REG_SAME ($1, $3) && REG_SAME ($5, $7) && !REG_SAME ($1, $5))
1351             {
1352               notethat ("dsp32alu: A1 = ABS A1 , A0 = ABS A0\n");
1353               $$ = DSP32ALU (16, 0, 0, 0, 0, 0, 0, 0, 3);
1354             }
1355           else
1356             return yyerror ("Register mismatch");
1357         }
1358
1359         | a_assign MINUS REG_A COMMA a_assign MINUS REG_A
1360         {
1361           if (REG_SAME ($1, $3) && REG_SAME ($5, $7) && !REG_SAME ($1, $5))
1362             {
1363               notethat ("dsp32alu: A1 = - A1 , A0 = - A0\n");
1364               $$ = DSP32ALU (14, 0, 0, 0, 0, 0, 0, 0, 3);
1365             }
1366           else
1367             return yyerror ("Register mismatch");
1368         }
1369
1370         | a_minusassign REG_A w32_or_nothing
1371         {
1372           if (!IS_A1 ($1) && IS_A1 ($2))
1373             {
1374               notethat ("dsp32alu: A0 -= A1\n");
1375               $$ = DSP32ALU (11, 0, 0, 0, 0, 0, $3.r0, 0, 3);
1376             }
1377           else
1378             return yyerror ("Register mismatch");
1379         }
1380
1381         | REG _MINUS_ASSIGN expr
1382         {
1383           if (IS_IREG ($1) && EXPR_VALUE ($3) == 4)
1384             {
1385               notethat ("dagMODik: iregs -= 4\n");
1386               $$ = DAGMODIK (&$1, 3);
1387             }
1388           else if (IS_IREG ($1) && EXPR_VALUE ($3) == 2)
1389             {
1390               notethat ("dagMODik: iregs -= 2\n");
1391               $$ = DAGMODIK (&$1, 1);
1392             }
1393           else
1394             return yyerror ("Register or value mismatch");
1395         }
1396
1397         | REG _PLUS_ASSIGN REG LPAREN BREV RPAREN
1398         {
1399           if (IS_IREG ($1) && IS_MREG ($3))
1400             {
1401               notethat ("dagMODim: iregs += mregs (opt_brev)\n");
1402               /* i, m, op, br.  */
1403               $$ = DAGMODIM (&$1, &$3, 0, 1);
1404             }
1405           else if (IS_PREG ($1) && IS_PREG ($3))
1406             {
1407               notethat ("PTR2op: pregs += pregs (BREV )\n");
1408               $$ = PTR2OP (&$1, &$3, 5);
1409             }
1410           else
1411             return yyerror ("Register mismatch");
1412         }
1413
1414         | REG _MINUS_ASSIGN REG
1415         {
1416           if (IS_IREG ($1) && IS_MREG ($3))
1417             {
1418               notethat ("dagMODim: iregs -= mregs\n");
1419               $$ = DAGMODIM (&$1, &$3, 1, 0);
1420             }
1421           else if (IS_PREG ($1) && IS_PREG ($3))
1422             {
1423               notethat ("PTR2op: pregs -= pregs\n");
1424               $$ = PTR2OP (&$1, &$3, 0);
1425             }
1426           else
1427             return yyerror ("Register mismatch");
1428         }
1429
1430         | REG_A _PLUS_ASSIGN REG_A w32_or_nothing
1431         {
1432           if (!IS_A1 ($1) && IS_A1 ($3))
1433             {
1434               notethat ("dsp32alu: A0 += A1 (W32)\n");
1435               $$ = DSP32ALU (11, 0, 0, 0, 0, 0, $4.r0, 0, 2);
1436             }
1437           else
1438             return yyerror ("Register mismatch");
1439         }
1440
1441         | REG _PLUS_ASSIGN REG
1442         {
1443           if (IS_IREG ($1) && IS_MREG ($3))
1444             {
1445               notethat ("dagMODim: iregs += mregs\n");
1446               $$ = DAGMODIM (&$1, &$3, 0, 0);
1447             }
1448           else
1449             return yyerror ("iregs += mregs expected");
1450         }
1451
1452         | REG _PLUS_ASSIGN expr
1453         {
1454           if (IS_IREG ($1))
1455             {
1456               if (EXPR_VALUE ($3) == 4)
1457                 {
1458                   notethat ("dagMODik: iregs += 4\n");
1459                   $$ = DAGMODIK (&$1, 2);
1460                 }
1461               else if (EXPR_VALUE ($3) == 2)
1462                 {
1463                   notethat ("dagMODik: iregs += 2\n");
1464                   $$ = DAGMODIK (&$1, 0);
1465                 }
1466               else
1467                 return yyerror ("iregs += [ 2 | 4 ");
1468             }
1469           else if (IS_PREG ($1) && IS_IMM ($3, 7))
1470             {
1471               notethat ("COMPI2opP: pregs += imm7\n");
1472               $$ = COMPI2OPP (&$1, imm7 ($3), 1);
1473             }
1474           else if (IS_DREG ($1) && IS_IMM ($3, 7))
1475             {
1476               notethat ("COMPI2opD: dregs += imm7\n");
1477               $$ = COMPI2OPD (&$1, imm7 ($3), 1);
1478             }
1479           else if ((IS_DREG ($1) || IS_PREG ($1)) && IS_CONST ($3))
1480             return yyerror ("Immediate value out of range");
1481           else
1482             return yyerror ("Register mismatch");
1483         }
1484
1485         | REG _STAR_ASSIGN REG
1486         {
1487           if (IS_DREG ($1) && IS_DREG ($3))
1488             {
1489               notethat ("ALU2op: dregs *= dregs\n");
1490               $$ = ALU2OP (&$1, &$3, 3);
1491             }
1492           else
1493             return yyerror ("Register mismatch");
1494         }
1495
1496         | SAA LPAREN REG COLON expr COMMA REG COLON expr RPAREN aligndir
1497         {
1498           if (!valid_dreg_pair (&$3, $5))
1499             return yyerror ("Bad dreg pair");
1500           else if (!valid_dreg_pair (&$7, $9))
1501             return yyerror ("Bad dreg pair");
1502           else
1503             {
1504               notethat ("dsp32alu: SAA (dregs_pair , dregs_pair ) (aligndir)\n");
1505               $$ = DSP32ALU (18, 0, 0, 0, &$3, &$7, $11.r0, 0, 0);
1506             }
1507         }
1508
1509         | a_assign REG_A LPAREN S RPAREN COMMA a_assign REG_A LPAREN S RPAREN
1510         {
1511           if (REG_SAME ($1, $2) && REG_SAME ($7, $8) && !REG_SAME ($1, $7))
1512             {
1513               notethat ("dsp32alu: A1 = A1 (S) , A0 = A0 (S)\n");
1514               $$ = DSP32ALU (8, 0, 0, 0, 0, 0, 1, 0, 2);
1515             }
1516           else
1517             return yyerror ("Register mismatch");
1518         }
1519
1520         | REG ASSIGN LPAREN REG PLUS REG RPAREN LESS_LESS expr
1521         {
1522           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG ($6)
1523               && REG_SAME ($1, $4))
1524             {
1525               if (EXPR_VALUE ($9) == 1)
1526                 {
1527                   notethat ("ALU2op: dregs = (dregs + dregs) << 1\n");
1528                   $$ = ALU2OP (&$1, &$6, 4);
1529                 }
1530               else if (EXPR_VALUE ($9) == 2)
1531                 {
1532                   notethat ("ALU2op: dregs = (dregs + dregs) << 2\n");
1533                   $$ = ALU2OP (&$1, &$6, 5);
1534                 }
1535               else
1536                 return yyerror ("Bad shift value");
1537             }
1538           else if (IS_PREG ($1) && IS_PREG ($4) && IS_PREG ($6)
1539                    && REG_SAME ($1, $4))
1540             {
1541               if (EXPR_VALUE ($9) == 1)
1542                 {
1543                   notethat ("PTR2op: pregs = (pregs + pregs) << 1\n");
1544                   $$ = PTR2OP (&$1, &$6, 6);
1545                 }
1546               else if (EXPR_VALUE ($9) == 2)
1547                 {
1548                   notethat ("PTR2op: pregs = (pregs + pregs) << 2\n");
1549                   $$ = PTR2OP (&$1, &$6, 7);
1550                 }
1551               else
1552                 return yyerror ("Bad shift value");
1553             }
1554           else
1555             return yyerror ("Register mismatch");
1556         }
1557
1558 /*  COMP3 CCFLAG.  */
1559         | REG ASSIGN REG BAR REG
1560         {
1561           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1562             {
1563               notethat ("COMP3op: dregs = dregs | dregs\n");
1564               $$ = COMP3OP (&$1, &$3, &$5, 3);
1565             }
1566           else
1567             return yyerror ("Dregs expected");
1568         }
1569         | REG ASSIGN REG CARET REG
1570         {
1571           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1572             {
1573               notethat ("COMP3op: dregs = dregs ^ dregs\n");
1574               $$ = COMP3OP (&$1, &$3, &$5, 4);
1575             }
1576           else
1577             return yyerror ("Dregs expected");
1578         }
1579         | REG ASSIGN REG PLUS LPAREN REG LESS_LESS expr RPAREN
1580         {
1581           if (IS_PREG ($1) && IS_PREG ($3) && IS_PREG ($6))
1582             {
1583               if (EXPR_VALUE ($8) == 1)
1584                 {
1585                   notethat ("COMP3op: pregs = pregs + (pregs << 1)\n");
1586                   $$ = COMP3OP (&$1, &$3, &$6, 6);
1587                 }
1588               else if (EXPR_VALUE ($8) == 2)
1589                 {
1590                   notethat ("COMP3op: pregs = pregs + (pregs << 2)\n");
1591                   $$ = COMP3OP (&$1, &$3, &$6, 7);
1592                 }
1593               else
1594                   return yyerror ("Bad shift value");
1595             }
1596           else
1597             return yyerror ("Dregs expected");
1598         }
1599         | CCREG ASSIGN REG_A _ASSIGN_ASSIGN REG_A
1600         {
1601           if ($3.regno == REG_A0 && $5.regno == REG_A1)
1602             {
1603               notethat ("CCflag: CC = A0 == A1\n");
1604               $$ = CCFLAG (0, 0, 5, 0, 0);
1605             }
1606           else
1607             return yyerror ("AREGs are in bad order or same");
1608         }
1609         | CCREG ASSIGN REG_A LESS_THAN REG_A
1610         {
1611           if ($3.regno == REG_A0 && $5.regno == REG_A1)
1612             {
1613               notethat ("CCflag: CC = A0 < A1\n");
1614               $$ = CCFLAG (0, 0, 6, 0, 0);
1615             }
1616           else
1617             return yyerror ("AREGs are in bad order or same");
1618         }
1619         | CCREG ASSIGN REG LESS_THAN REG iu_or_nothing
1620         {
1621           if ((IS_DREG ($3) && IS_DREG ($5))
1622               || (IS_PREG ($3) && IS_PREG ($5)))
1623             {
1624               notethat ("CCflag: CC = dpregs < dpregs\n");
1625               $$ = CCFLAG (&$3, $5.regno & CODE_MASK, $6.r0, 0, IS_PREG ($3) ? 1 : 0);
1626             }
1627           else
1628             return yyerror ("Bad register in comparison");
1629         }
1630         | CCREG ASSIGN REG LESS_THAN expr iu_or_nothing
1631         {
1632           if (!IS_DREG ($3) && !IS_PREG ($3))
1633             return yyerror ("Bad register in comparison");
1634
1635           if (($6.r0 == 1 && IS_IMM ($5, 3))
1636               || ($6.r0 == 3 && IS_UIMM ($5, 3)))
1637             {
1638               notethat ("CCflag: CC = dpregs < (u)imm3\n");
1639               $$ = CCFLAG (&$3, imm3 ($5), $6.r0, 1, IS_PREG ($3) ? 1 : 0);
1640             }
1641           else
1642             return yyerror ("Bad constant value");
1643         }
1644         | CCREG ASSIGN REG _ASSIGN_ASSIGN REG
1645         {
1646           if ((IS_DREG ($3) && IS_DREG ($5))
1647               || (IS_PREG ($3) && IS_PREG ($5)))
1648             {
1649               notethat ("CCflag: CC = dpregs == dpregs\n");
1650               $$ = CCFLAG (&$3, $5.regno & CODE_MASK, 0, 0, IS_PREG ($3) ? 1 : 0);
1651             }
1652           else
1653             return yyerror ("Bad register in comparison");
1654         }
1655         | CCREG ASSIGN REG _ASSIGN_ASSIGN expr
1656         {
1657           if (!IS_DREG ($3) && !IS_PREG ($3))
1658             return yyerror ("Bad register in comparison");
1659
1660           if (IS_IMM ($5, 3))
1661             {
1662               notethat ("CCflag: CC = dpregs == imm3\n");
1663               $$ = CCFLAG (&$3, imm3 ($5), 0, 1, IS_PREG ($3) ? 1 : 0);
1664             }
1665           else
1666             return yyerror ("Bad constant range");
1667         }
1668         | CCREG ASSIGN REG_A _LESS_THAN_ASSIGN REG_A
1669         {
1670           if ($3.regno == REG_A0 && $5.regno == REG_A1)
1671             {
1672               notethat ("CCflag: CC = A0 <= A1\n");
1673               $$ = CCFLAG (0, 0, 7, 0, 0);
1674             }
1675           else
1676             return yyerror ("AREGs are in bad order or same");
1677         }
1678         | CCREG ASSIGN REG _LESS_THAN_ASSIGN REG iu_or_nothing
1679         {
1680           if ((IS_DREG ($3) && IS_DREG ($5))
1681               || (IS_PREG ($3) && IS_PREG ($5)))
1682             {
1683               notethat ("CCflag: CC = dpregs <= dpregs (..)\n");
1684               $$ = CCFLAG (&$3, $5.regno & CODE_MASK,
1685                            1 + $6.r0, 0, IS_PREG ($3) ? 1 : 0);
1686             }
1687           else
1688             return yyerror ("Bad register in comparison");
1689         }
1690         | CCREG ASSIGN REG _LESS_THAN_ASSIGN expr iu_or_nothing
1691         {
1692           if (!IS_DREG ($3) && !IS_PREG ($3))
1693             return yyerror ("Bad register in comparison");
1694
1695           if (($6.r0 == 1 && IS_IMM ($5, 3))
1696               || ($6.r0 == 3 && IS_UIMM ($5, 3)))
1697             {
1698               notethat ("CCflag: CC = dpregs <= (u)imm3\n");
1699               $$ = CCFLAG (&$3, imm3 ($5), 1 + $6.r0, 1, IS_PREG ($3) ? 1 : 0);
1700             }
1701           else
1702             return yyerror ("Bad constant value");
1703         }
1704
1705         | REG ASSIGN REG AMPERSAND REG
1706         {
1707           if (IS_DREG ($1) && IS_DREG ($3) && IS_DREG ($5))
1708             {
1709               notethat ("COMP3op: dregs = dregs & dregs\n");
1710               $$ = COMP3OP (&$1, &$3, &$5, 2);
1711             }
1712           else
1713             return yyerror ("Dregs expected");
1714         }
1715
1716         | ccstat
1717         {
1718           notethat ("CC2stat operation\n");
1719           $$ = bfin_gen_cc2stat ($1.r0, $1.x0, $1.s0);
1720         }
1721
1722         | REG ASSIGN REG
1723         {
1724           if ((IS_GENREG ($1) && IS_GENREG ($3))
1725               || (IS_GENREG ($1) && IS_DAGREG ($3))
1726               || (IS_DAGREG ($1) && IS_GENREG ($3))
1727               || (IS_DAGREG ($1) && IS_DAGREG ($3))
1728               || (IS_GENREG ($1) && $3.regno == REG_USP)
1729               || ($1.regno == REG_USP && IS_GENREG ($3))
1730               || (IS_DREG ($1) && IS_SYSREG ($3))
1731               || (IS_PREG ($1) && IS_SYSREG ($3))
1732               || (IS_SYSREG ($1) && IS_DREG ($3))
1733               || (IS_SYSREG ($1) && IS_PREG ($3))
1734               || (IS_SYSREG ($1) && $3.regno == REG_USP))
1735             {
1736               $$ = bfin_gen_regmv (&$3, &$1);
1737             }
1738           else
1739             return yyerror ("Register mismatch");
1740         }
1741
1742         | CCREG ASSIGN REG
1743         {
1744           if (IS_DREG ($3))
1745             {
1746               notethat ("CC2dreg: CC = dregs\n");
1747               $$ = bfin_gen_cc2dreg (1, &$3);
1748             }
1749           else
1750             return yyerror ("Register mismatch");
1751         }
1752
1753         | REG ASSIGN CCREG
1754         {
1755           if (IS_DREG ($1))
1756             {
1757               notethat ("CC2dreg: dregs = CC\n");
1758               $$ = bfin_gen_cc2dreg (0, &$1);
1759             }
1760           else
1761             return yyerror ("Register mismatch");
1762         }
1763
1764         | CCREG _ASSIGN_BANG CCREG
1765         {
1766           notethat ("CC2dreg: CC =! CC\n");
1767           $$ = bfin_gen_cc2dreg (3, 0);
1768         }
1769
1770 /* DSPMULT.  */
1771
1772         | HALF_REG ASSIGN multiply_halfregs opt_mode
1773         {
1774           notethat ("dsp32mult: dregs_half = multiply_halfregs (opt_mode)\n");
1775
1776           if (!IS_H ($1) && $4.MM)
1777             return yyerror ("(M) not allowed with MAC0");
1778
1779           if ($4.mod != 0 && $4.mod != M_FU && $4.mod != M_IS
1780               && $4.mod != M_IU && $4.mod != M_T && $4.mod != M_TFU
1781               && $4.mod != M_S2RND && $4.mod != M_ISS2 && $4.mod != M_IH)
1782             return yyerror ("bad option.");
1783
1784           if (IS_H ($1))
1785             {
1786               $$ = DSP32MULT (0, $4.MM, $4.mod, 1, 0,
1787                               IS_H ($3.s0), IS_H ($3.s1), 0, 0,
1788                               &$1, 0, &$3.s0, &$3.s1, 0);
1789             }
1790           else
1791             {
1792               $$ = DSP32MULT (0, 0, $4.mod, 0, 0,
1793                               0, 0, IS_H ($3.s0), IS_H ($3.s1),
1794                               &$1, 0, &$3.s0, &$3.s1, 1);
1795             }
1796         }
1797
1798         | REG ASSIGN multiply_halfregs opt_mode
1799         {
1800           /* Odd registers can use (M).  */
1801           if (!IS_DREG ($1))
1802             return yyerror ("Dreg expected");
1803
1804           if (IS_EVEN ($1) && $4.MM)
1805             return yyerror ("(M) not allowed with MAC0");
1806
1807           if ($4.mod != 0 && $4.mod != M_FU && $4.mod != M_IS
1808               && $4.mod != M_S2RND && $4.mod != M_ISS2)
1809             return yyerror ("bad option");
1810
1811           if (!IS_EVEN ($1))
1812             {
1813               notethat ("dsp32mult: dregs = multiply_halfregs (opt_mode)\n");
1814
1815               $$ = DSP32MULT (0, $4.MM, $4.mod, 1, 1,
1816                               IS_H ($3.s0), IS_H ($3.s1), 0, 0,
1817                               &$1, 0, &$3.s0, &$3.s1, 0);
1818             }
1819           else
1820             {
1821               notethat ("dsp32mult: dregs = multiply_halfregs opt_mode\n");
1822               $$ = DSP32MULT (0, 0, $4.mod, 0, 1,
1823                               0, 0, IS_H ($3.s0), IS_H ($3.s1),
1824                               &$1,  0, &$3.s0, &$3.s1, 1);
1825             }
1826         }
1827
1828         | HALF_REG ASSIGN multiply_halfregs opt_mode COMMA
1829           HALF_REG ASSIGN multiply_halfregs opt_mode
1830         {
1831           if (!IS_DREG ($1) || !IS_DREG ($6))
1832             return yyerror ("Dregs expected");
1833
1834           if (!IS_HCOMPL($1, $6))
1835             return yyerror ("Dest registers mismatch");
1836
1837           if (check_multiply_halfregs (&$3, &$8) < 0)
1838             return -1;
1839
1840           if ((!IS_H ($1) && $4.MM)
1841               || (!IS_H ($6) && $9.MM))
1842             return yyerror ("(M) not allowed with MAC0");
1843
1844           notethat ("dsp32mult: dregs_hi = multiply_halfregs mxd_mod, "
1845                     "dregs_lo = multiply_halfregs opt_mode\n");
1846
1847           if (IS_H ($1))
1848             $$ = DSP32MULT (0, $4.MM, $9.mod, 1, 0,
1849                             IS_H ($3.s0), IS_H ($3.s1), IS_H ($8.s0), IS_H ($8.s1),
1850                             &$1, 0, &$3.s0, &$3.s1, 1);
1851           else
1852             $$ = DSP32MULT (0, $9.MM, $9.mod, 1, 0,
1853                             IS_H ($8.s0), IS_H ($8.s1), IS_H ($3.s0), IS_H ($3.s1),
1854                             &$1, 0, &$3.s0, &$3.s1, 1);
1855         }
1856
1857         | REG ASSIGN multiply_halfregs opt_mode COMMA REG ASSIGN multiply_halfregs opt_mode
1858         {
1859           if (!IS_DREG ($1) || !IS_DREG ($6))
1860             return yyerror ("Dregs expected");
1861
1862           if ((IS_EVEN ($1) && $6.regno - $1.regno != 1)
1863               || (IS_EVEN ($6) && $1.regno - $6.regno != 1))
1864             return yyerror ("Dest registers mismatch");
1865
1866           if (check_multiply_halfregs (&$3, &$8) < 0)
1867             return -1;
1868
1869           if ((IS_EVEN ($1) && $4.MM)
1870               || (IS_EVEN ($6) && $9.MM))
1871             return yyerror ("(M) not allowed with MAC0");
1872
1873           notethat ("dsp32mult: dregs = multiply_halfregs mxd_mod, "
1874                    "dregs = multiply_halfregs opt_mode\n");
1875
1876           if (IS_EVEN ($1))
1877             $$ = DSP32MULT (0, $9.MM, $9.mod, 1, 1,
1878                             IS_H ($8.s0), IS_H ($8.s1), IS_H ($3.s0), IS_H ($3.s1),
1879                             &$1, 0, &$3.s0, &$3.s1, 1);
1880           else
1881             $$ = DSP32MULT (0, $4.MM, $9.mod, 1, 1,
1882                             IS_H ($3.s0), IS_H ($3.s1), IS_H ($8.s0), IS_H ($8.s1),
1883                             &$1, 0, &$3.s0, &$3.s1, 1);
1884         }
1885
1886 \f
1887 /* SHIFTs.  */
1888         | a_assign ASHIFT REG_A BY HALF_REG
1889         {
1890           if (!REG_SAME ($1, $3))
1891             return yyerror ("Aregs must be same");
1892
1893           if (IS_DREG ($5) && !IS_H ($5))
1894             {
1895               notethat ("dsp32shift: A0 = ASHIFT A0 BY dregs_lo\n");
1896               $$ = DSP32SHIFT (3, 0, &$5, 0, 0, IS_A1 ($1));
1897             }
1898           else
1899             return yyerror ("Dregs expected");
1900         }
1901
1902         | HALF_REG ASSIGN ASHIFT HALF_REG BY HALF_REG smod
1903         {
1904           if (IS_DREG ($6) && !IS_H ($6))
1905             {
1906               notethat ("dsp32shift: dregs_half = ASHIFT dregs_half BY dregs_lo\n");
1907               $$ = DSP32SHIFT (0, &$1, &$6, &$4, $7.s0, HL2 ($1, $4));
1908             }
1909           else
1910             return yyerror ("Dregs expected");
1911         }
1912
1913         | a_assign REG_A LESS_LESS expr
1914         {
1915           if (!REG_SAME ($1, $2))
1916             return yyerror ("Aregs must be same");
1917
1918           if (IS_UIMM ($4, 5))
1919             {
1920               notethat ("dsp32shiftimm: A0 = A0 << uimm5\n");
1921               $$ = DSP32SHIFTIMM (3, 0, imm5 ($4), 0, 0, IS_A1 ($1));
1922             }
1923           else
1924             return yyerror ("Bad shift value");
1925         }
1926
1927         | REG ASSIGN REG LESS_LESS expr vsmod
1928         {
1929           if (IS_DREG ($1) && IS_DREG ($3) && IS_UIMM ($5, 5))
1930             {
1931               if ($6.r0)
1932                 {
1933                   /*  Vector?  */
1934                   notethat ("dsp32shiftimm: dregs = dregs << expr (V, .)\n");
1935                   $$ = DSP32SHIFTIMM (1, &$1, imm4 ($5), &$3, $6.s0 ? 1 : 2, 0);
1936                 }
1937               else
1938                 {
1939                   notethat ("dsp32shiftimm: dregs =  dregs << uimm5 (.)\n");
1940                   $$ = DSP32SHIFTIMM (2, &$1, imm6 ($5), &$3, $6.s0 ? 1 : 2, 0);
1941                 }
1942             }
1943           else if ($6.s0 == 0 && IS_PREG ($1) && IS_PREG ($3))
1944             {
1945               if (EXPR_VALUE ($5) == 2)
1946                 {
1947                   notethat ("PTR2op: pregs = pregs << 2\n");
1948                   $$ = PTR2OP (&$1, &$3, 1);
1949                 }
1950               else if (EXPR_VALUE ($5) == 1)
1951                 {
1952                   notethat ("COMP3op: pregs = pregs << 1\n");
1953                   $$ = COMP3OP (&$1, &$3, &$3, 5);
1954                 }
1955               else
1956                 return yyerror ("Bad shift value");
1957             }
1958           else
1959             return yyerror ("Bad shift value or register");
1960         }
1961         | HALF_REG ASSIGN HALF_REG LESS_LESS expr smod
1962         {
1963           if (IS_UIMM ($5, 4))
1964             {
1965               if ($6.s0)
1966                 {
1967                   notethat ("dsp32shiftimm: dregs_half = dregs_half << uimm4 (S)\n");
1968                   $$ = DSP32SHIFTIMM (0x0, &$1, imm5 ($5), &$3, $6.s0, HL2 ($1, $3));
1969                 }
1970               else
1971                 {
1972                   notethat ("dsp32shiftimm: dregs_half = dregs_half << uimm4\n");
1973                   $$ = DSP32SHIFTIMM (0x0, &$1, imm5 ($5), &$3, 2, HL2 ($1, $3));
1974                 }
1975             }
1976           else
1977             return yyerror ("Bad shift value");
1978         }
1979         | REG ASSIGN ASHIFT REG BY HALF_REG vsmod
1980         {
1981           int op;
1982
1983           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG ($6) && !IS_H ($6))
1984             {
1985               if ($7.r0)
1986                 {
1987                   op = 1;
1988                   notethat ("dsp32shift: dregs = ASHIFT dregs BY "
1989                            "dregs_lo (V, .)\n");
1990                 }
1991               else
1992                 {
1993
1994                   op = 2;
1995                   notethat ("dsp32shift: dregs = ASHIFT dregs BY dregs_lo (.)\n");
1996                 }
1997               $$ = DSP32SHIFT (op, &$1, &$6, &$4, $7.s0, 0);
1998             }
1999           else
2000             return yyerror ("Dregs expected");
2001         }
2002
2003 /*  EXPADJ.  */
2004         | HALF_REG ASSIGN EXPADJ LPAREN REG COMMA HALF_REG RPAREN vmod
2005         {
2006           if (IS_DREG_L ($1) && IS_DREG_L ($5) && IS_DREG_L ($7))
2007             {
2008               notethat ("dsp32shift: dregs_lo = EXPADJ (dregs , dregs_lo )\n");
2009               $$ = DSP32SHIFT (7, &$1, &$7, &$5, $9.r0, 0);
2010             }
2011           else
2012             return yyerror ("Bad shift value or register");
2013         }
2014
2015
2016         | HALF_REG ASSIGN EXPADJ LPAREN HALF_REG COMMA HALF_REG RPAREN
2017         {
2018           if (IS_DREG_L ($1) && IS_DREG_L ($5) && IS_DREG_L ($7))
2019             {
2020               notethat ("dsp32shift: dregs_lo = EXPADJ (dregs_lo, dregs_lo)\n");
2021               $$ = DSP32SHIFT (7, &$1, &$7, &$5, 2, 0);
2022             }
2023           else if (IS_DREG_L ($1) && IS_DREG_H ($5) && IS_DREG_L ($7))
2024             {
2025               notethat ("dsp32shift: dregs_lo = EXPADJ (dregs_hi, dregs_lo)\n");
2026               $$ = DSP32SHIFT (7, &$1, &$7, &$5, 3, 0);
2027             }
2028           else
2029             return yyerror ("Bad shift value or register");
2030         }
2031
2032 /* DEPOSIT.  */
2033
2034         | REG ASSIGN DEPOSIT LPAREN REG COMMA REG RPAREN
2035         {
2036           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
2037             {
2038               notethat ("dsp32shift: dregs = DEPOSIT (dregs , dregs )\n");
2039               $$ = DSP32SHIFT (10, &$1, &$7, &$5, 2, 0);
2040             }
2041           else
2042             return yyerror ("Register mismatch");
2043         }
2044
2045         | REG ASSIGN DEPOSIT LPAREN REG COMMA REG RPAREN LPAREN X RPAREN
2046         {
2047           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
2048             {
2049               notethat ("dsp32shift: dregs = DEPOSIT (dregs , dregs ) (X)\n");
2050               $$ = DSP32SHIFT (10, &$1, &$7, &$5, 3, 0);
2051             }
2052           else
2053             return yyerror ("Register mismatch");
2054         }
2055
2056         | REG ASSIGN EXTRACT LPAREN REG COMMA HALF_REG RPAREN xpmod
2057         {
2058           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG_L ($7))
2059             {
2060               notethat ("dsp32shift: dregs = EXTRACT (dregs, dregs_lo ) (.)\n");
2061               $$ = DSP32SHIFT (10, &$1, &$7, &$5, $9.r0, 0);
2062             }
2063           else
2064             return yyerror ("Register mismatch");
2065         }
2066
2067         | a_assign REG_A _GREATER_GREATER_GREATER expr
2068         {
2069           if (!REG_SAME ($1, $2))
2070             return yyerror ("Aregs must be same");
2071
2072           if (IS_UIMM ($4, 5))
2073             {
2074               notethat ("dsp32shiftimm: Ax = Ax >>> uimm5\n");
2075               $$ = DSP32SHIFTIMM (3, 0, -imm6 ($4), 0, 0, IS_A1 ($1));
2076             }
2077           else
2078             return yyerror ("Shift value range error");
2079         }
2080         | a_assign LSHIFT REG_A BY HALF_REG
2081         {
2082           if (REG_SAME ($1, $3) && IS_DREG_L ($5))
2083             {
2084               notethat ("dsp32shift: Ax = LSHIFT Ax BY dregs_lo\n");
2085               $$ = DSP32SHIFT (3, 0, &$5, 0, 1, IS_A1 ($1));
2086             }
2087           else
2088             return yyerror ("Register mismatch");
2089         }
2090
2091         | HALF_REG ASSIGN LSHIFT HALF_REG BY HALF_REG
2092         {
2093           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG_L ($6))
2094             {
2095               notethat ("dsp32shift: dregs_lo = LSHIFT dregs_hi BY dregs_lo\n");
2096               $$ = DSP32SHIFT (0, &$1, &$6, &$4, 2, HL2 ($1, $4));
2097             }
2098           else
2099             return yyerror ("Register mismatch");
2100         }
2101
2102         | REG ASSIGN LSHIFT REG BY HALF_REG vmod
2103         {
2104           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG_L ($6))
2105             {
2106               notethat ("dsp32shift: dregs = LSHIFT dregs BY dregs_lo (V )\n");
2107               $$ = DSP32SHIFT ($7.r0 ? 1: 2, &$1, &$6, &$4, 2, 0);
2108             }
2109           else
2110             return yyerror ("Register mismatch");
2111         }
2112
2113         | REG ASSIGN SHIFT REG BY HALF_REG
2114         {
2115           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG_L ($6))
2116             {
2117               notethat ("dsp32shift: dregs = SHIFT dregs BY dregs_lo\n");
2118               $$ = DSP32SHIFT (2, &$1, &$6, &$4, 2, 0);
2119             }
2120           else
2121             return yyerror ("Register mismatch");
2122         }
2123
2124         | a_assign REG_A GREATER_GREATER expr
2125         {
2126           if (REG_SAME ($1, $2) && IS_IMM ($4, 6) >= 0)
2127             {
2128               notethat ("dsp32shiftimm: Ax = Ax >> imm6\n");
2129               $$ = DSP32SHIFTIMM (3, 0, -imm6 ($4), 0, 1, IS_A1 ($1));
2130             }
2131           else
2132             return yyerror ("Accu register expected");
2133         }
2134
2135         | REG ASSIGN REG GREATER_GREATER expr vmod
2136         {
2137           if ($6.r0 == 1)
2138             {
2139               if (IS_DREG ($1) && IS_DREG ($3) && IS_UIMM ($5, 5))
2140                 {
2141                   notethat ("dsp32shiftimm: dregs = dregs >> uimm5 (V)\n");
2142                   $$ = DSP32SHIFTIMM (1, &$1, -uimm5 ($5), &$3, 2, 0);
2143                 }
2144               else
2145                 return yyerror ("Register mismatch");
2146             }
2147           else
2148             {
2149               if (IS_DREG ($1) && IS_DREG ($3) && IS_UIMM ($5, 5))
2150                 {
2151                   notethat ("dsp32shiftimm: dregs = dregs >> uimm5\n");
2152                   $$ = DSP32SHIFTIMM (2, &$1, -imm6 ($5), &$3, 2, 0);
2153                 }
2154               else if (IS_PREG ($1) && IS_PREG ($3) && EXPR_VALUE ($5) == 2)
2155                 {
2156                   notethat ("PTR2op: pregs = pregs >> 2\n");
2157                   $$ = PTR2OP (&$1, &$3, 3);
2158                 }
2159               else if (IS_PREG ($1) && IS_PREG ($3) && EXPR_VALUE ($5) == 1)
2160                 {
2161                   notethat ("PTR2op: pregs = pregs >> 1\n");
2162                   $$ = PTR2OP (&$1, &$3, 4);
2163                 }
2164               else
2165                 return yyerror ("Register mismatch");
2166             }
2167         }
2168         | HALF_REG ASSIGN HALF_REG GREATER_GREATER expr
2169         {
2170           if (IS_UIMM ($5, 5))
2171             {
2172               notethat ("dsp32shiftimm:  dregs_half =  dregs_half >> uimm5\n");
2173               $$ = DSP32SHIFTIMM (0, &$1, -uimm5 ($5), &$3, 2, HL2 ($1, $3));
2174             }
2175           else
2176             return yyerror ("Register mismatch");
2177         }
2178         | HALF_REG ASSIGN HALF_REG _GREATER_GREATER_GREATER expr smod
2179         {
2180           if (IS_UIMM ($5, 5))
2181             {
2182               notethat ("dsp32shiftimm: dregs_half = dregs_half >>> uimm5\n");
2183               $$ = DSP32SHIFTIMM (0, &$1, -uimm5 ($5), &$3,
2184                                   $6.s0, HL2 ($1, $3));
2185             }
2186           else
2187             return yyerror ("Register or modifier mismatch");
2188         }
2189
2190
2191         | REG ASSIGN REG _GREATER_GREATER_GREATER expr vsmod
2192         {
2193           if (IS_DREG ($1) && IS_DREG ($3) && IS_UIMM ($5, 5))
2194             {
2195               if ($6.r0)
2196                 {
2197                   /* Vector?  */
2198                   notethat ("dsp32shiftimm: dregs  =  dregs >>> uimm5 (V, .)\n");
2199                   $$ = DSP32SHIFTIMM (1, &$1, -uimm5 ($5), &$3, $6.s0, 0);
2200                 }
2201               else
2202                 {
2203                   notethat ("dsp32shiftimm: dregs  =  dregs >>> uimm5 (.)\n");
2204                   $$ = DSP32SHIFTIMM (2, &$1, -uimm5 ($5), &$3, $6.s0, 0);
2205                 }
2206             }
2207           else
2208             return yyerror ("Register mismatch");
2209         }
2210
2211         | HALF_REG ASSIGN ONES REG
2212         {
2213           if (IS_DREG_L ($1) && IS_DREG ($4))
2214             {
2215               notethat ("dsp32shift: dregs_lo = ONES dregs\n");
2216               $$ = DSP32SHIFT (6, &$1, 0, &$4, 3, 0);
2217             }
2218           else
2219             return yyerror ("Register mismatch");
2220         }
2221
2222         | REG ASSIGN PACK LPAREN HALF_REG COMMA HALF_REG RPAREN
2223         {
2224           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
2225             {
2226               notethat ("dsp32shift: dregs = PACK (dregs_hi , dregs_hi )\n");
2227               $$ = DSP32SHIFT (4, &$1, &$7, &$5, HL2 ($5, $7), 0);
2228             }
2229           else
2230             return yyerror ("Register mismatch");
2231         }
2232
2233         | HALF_REG ASSIGN CCREG ASSIGN BXORSHIFT LPAREN REG_A COMMA REG RPAREN
2234         {
2235           if (IS_DREG ($1)
2236               && $7.regno == REG_A0
2237               && IS_DREG ($9) && !IS_H ($1) && !IS_A1 ($7))
2238             {
2239               notethat ("dsp32shift: dregs_lo = CC = BXORSHIFT (A0 , dregs )\n");
2240               $$ = DSP32SHIFT (11, &$1, &$9, 0, 0, 0);
2241             }
2242           else
2243             return yyerror ("Register mismatch");
2244         }
2245
2246         | HALF_REG ASSIGN CCREG ASSIGN BXOR LPAREN REG_A COMMA REG RPAREN
2247         {
2248           if (IS_DREG ($1)
2249               && $7.regno == REG_A0
2250               && IS_DREG ($9) && !IS_H ($1) && !IS_A1 ($7))
2251             {
2252               notethat ("dsp32shift: dregs_lo = CC = BXOR (A0 , dregs)\n");
2253               $$ = DSP32SHIFT (11, &$1, &$9, 0, 1, 0);
2254             }
2255           else
2256             return yyerror ("Register mismatch");
2257         }
2258
2259         | HALF_REG ASSIGN CCREG ASSIGN BXOR LPAREN REG_A COMMA REG_A COMMA CCREG RPAREN
2260         {
2261           if (IS_DREG ($1) && !IS_H ($1) && !REG_SAME ($7, $9))
2262             {
2263               notethat ("dsp32shift: dregs_lo = CC = BXOR (A0 , A1 , CC)\n");
2264               $$ = DSP32SHIFT (12, &$1, 0, 0, 1, 0);
2265             }
2266           else
2267             return yyerror ("Register mismatch");
2268         }
2269
2270         | a_assign ROT REG_A BY HALF_REG
2271         {
2272           if (REG_SAME ($1, $3) && IS_DREG_L ($5))
2273             {
2274               notethat ("dsp32shift: Ax = ROT Ax BY dregs_lo\n");
2275               $$ = DSP32SHIFT (3, 0, &$5, 0, 2, IS_A1 ($1));
2276             }
2277           else
2278             return yyerror ("Register mismatch");
2279         }
2280
2281         | REG ASSIGN ROT REG BY HALF_REG
2282         {
2283           if (IS_DREG ($1) && IS_DREG ($4) && IS_DREG_L ($6))
2284             {
2285               notethat ("dsp32shift: dregs = ROT dregs BY dregs_lo\n");
2286               $$ = DSP32SHIFT (2, &$1, &$6, &$4, 3, 0);
2287             }
2288           else
2289             return yyerror ("Register mismatch");
2290         }
2291
2292         | a_assign ROT REG_A BY expr
2293         {
2294           if (IS_IMM ($5, 6))
2295             {
2296               notethat ("dsp32shiftimm: An = ROT An BY imm6\n");
2297               $$ = DSP32SHIFTIMM (3, 0, imm6 ($5), 0, 2, IS_A1 ($1));
2298             }
2299           else
2300             return yyerror ("Register mismatch");
2301         }
2302
2303         | REG ASSIGN ROT REG BY expr
2304         {
2305           if (IS_DREG ($1) && IS_DREG ($4) && IS_IMM ($6, 6))
2306             {
2307               $$ = DSP32SHIFTIMM (2, &$1, imm6 ($6), &$4, 3, IS_A1 ($1));
2308             }
2309           else
2310             return yyerror ("Register mismatch");
2311         }
2312
2313         | HALF_REG ASSIGN SIGNBITS REG_A
2314         {
2315           if (IS_DREG_L ($1))
2316             {
2317               notethat ("dsp32shift: dregs_lo = SIGNBITS An\n");
2318               $$ = DSP32SHIFT (6, &$1, 0, 0, IS_A1 ($4), 0);
2319             }
2320           else
2321             return yyerror ("Register mismatch");
2322         }
2323
2324         | HALF_REG ASSIGN SIGNBITS REG
2325         {
2326           if (IS_DREG_L ($1) && IS_DREG ($4))
2327             {
2328               notethat ("dsp32shift: dregs_lo = SIGNBITS dregs\n");
2329               $$ = DSP32SHIFT (5, &$1, 0, &$4, 0, 0);
2330             }
2331           else
2332             return yyerror ("Register mismatch");
2333         }
2334
2335         | HALF_REG ASSIGN SIGNBITS HALF_REG
2336         {
2337           if (IS_DREG_L ($1))
2338             {
2339               notethat ("dsp32shift: dregs_lo = SIGNBITS dregs_lo\n");
2340               $$ = DSP32SHIFT (5, &$1, 0, &$4, 1 + IS_H ($4), 0);
2341             }
2342           else
2343             return yyerror ("Register mismatch");
2344         }
2345
2346         /* The ASR bit is just inverted here. */
2347         | HALF_REG ASSIGN VIT_MAX LPAREN REG RPAREN asr_asl
2348         {
2349           if (IS_DREG_L ($1) && IS_DREG ($5))
2350             {
2351               notethat ("dsp32shift: dregs_lo = VIT_MAX (dregs) (..)\n");
2352               $$ = DSP32SHIFT (9, &$1, 0, &$5, ($7.r0 ? 0 : 1), 0);
2353             }
2354           else
2355             return yyerror ("Register mismatch");
2356         }
2357
2358         | REG ASSIGN VIT_MAX LPAREN REG COMMA REG RPAREN asr_asl
2359         {
2360           if (IS_DREG ($1) && IS_DREG ($5) && IS_DREG ($7))
2361             {
2362               notethat ("dsp32shift: dregs = VIT_MAX (dregs, dregs) (ASR)\n");
2363               $$ = DSP32SHIFT (9, &$1, &$7, &$5, 2 | ($9.r0 ? 0 : 1), 0);
2364             }
2365           else
2366             return yyerror ("Register mismatch");
2367         }
2368
2369         | BITMUX LPAREN REG COMMA REG COMMA REG_A RPAREN asr_asl
2370         {
2371           if (IS_DREG ($3) && IS_DREG ($5) && !IS_A1 ($7))
2372             {
2373               notethat ("dsp32shift: BITMUX (dregs , dregs , A0) (ASR)\n");
2374               $$ = DSP32SHIFT (8, 0, &$3, &$5, $9.r0, 0);
2375             }
2376           else
2377             return yyerror ("Register mismatch");
2378         }
2379
2380         | a_assign BXORSHIFT LPAREN REG_A COMMA REG_A COMMA CCREG RPAREN
2381         {
2382           if (!IS_A1 ($1) && !IS_A1 ($4) && IS_A1 ($6))
2383             {
2384               notethat ("dsp32shift: A0 = BXORSHIFT (A0 , A1 , CC )\n");
2385               $$ = DSP32SHIFT (12, 0, 0, 0, 0, 0);
2386             }
2387           else
2388             return yyerror ("Dregs expected");
2389         }
2390
2391
2392 /* LOGI2op:     BITCLR (dregs, uimm5).  */
2393         | BITCLR LPAREN REG COMMA expr RPAREN
2394         {
2395           if (IS_DREG ($3) && IS_UIMM ($5, 5))
2396             {
2397               notethat ("LOGI2op: BITCLR (dregs , uimm5 )\n");
2398               $$ = LOGI2OP ($3, uimm5 ($5), 4);
2399             }
2400           else
2401             return yyerror ("Register mismatch");
2402         }
2403
2404 /* LOGI2op:     BITSET (dregs, uimm5).  */
2405         | BITSET LPAREN REG COMMA expr RPAREN
2406         {
2407           if (IS_DREG ($3) && IS_UIMM ($5, 5))
2408             {
2409               notethat ("LOGI2op: BITCLR (dregs , uimm5 )\n");
2410               $$ = LOGI2OP ($3, uimm5 ($5), 2);
2411             }
2412           else
2413             return yyerror ("Register mismatch");
2414         }
2415
2416 /* LOGI2op:     BITTGL (dregs, uimm5).  */
2417         | BITTGL LPAREN REG COMMA expr RPAREN
2418         {
2419           if (IS_DREG ($3) && IS_UIMM ($5, 5))
2420             {
2421               notethat ("LOGI2op: BITCLR (dregs , uimm5 )\n");
2422               $$ = LOGI2OP ($3, uimm5 ($5), 3);
2423             }
2424           else
2425             return yyerror ("Register mismatch");
2426         }
2427
2428         | CCREG _ASSIGN_BANG BITTST LPAREN REG COMMA expr RPAREN
2429         {
2430           if (IS_DREG ($5) && IS_UIMM ($7, 5))
2431             {
2432               notethat ("LOGI2op: CC =! BITTST (dregs , uimm5 )\n");
2433               $$ = LOGI2OP ($5, uimm5 ($7), 0);
2434             }
2435           else
2436             return yyerror ("Register mismatch or value error");
2437         }
2438
2439         | CCREG ASSIGN BITTST LPAREN REG COMMA expr RPAREN
2440         {
2441           if (IS_DREG ($5) && IS_UIMM ($7, 5))
2442             {
2443               notethat ("LOGI2op: CC = BITTST (dregs , uimm5 )\n");
2444               $$ = LOGI2OP ($5, uimm5 ($7), 1);
2445             }
2446           else
2447             return yyerror ("Register mismatch or value error");
2448         }
2449
2450         | IF BANG CCREG REG ASSIGN REG
2451         {
2452           if ((IS_DREG ($4) || IS_PREG ($4))
2453               && (IS_DREG ($6) || IS_PREG ($6)))
2454             {
2455               notethat ("ccMV: IF ! CC gregs = gregs\n");
2456               $$ = CCMV (&$6, &$4, 0);
2457             }
2458           else
2459             return yyerror ("Register mismatch");
2460         }
2461
2462         | IF CCREG REG ASSIGN REG
2463         {
2464           if ((IS_DREG ($5) || IS_PREG ($5))
2465               && (IS_DREG ($3) || IS_PREG ($3)))
2466             {
2467               notethat ("ccMV: IF CC gregs = gregs\n");
2468               $$ = CCMV (&$5, &$3, 1);
2469             }
2470           else
2471             return yyerror ("Register mismatch");
2472         }
2473
2474         | IF BANG CCREG JUMP expr
2475         {
2476           if (IS_PCREL10 ($5))
2477             {
2478               notethat ("BRCC: IF !CC JUMP  pcrel11m2\n");
2479               $$ = BRCC (0, 0, $5);
2480             }
2481           else
2482             return yyerror ("Bad jump offset");
2483         }
2484
2485         | IF BANG CCREG JUMP expr LPAREN BP RPAREN
2486         {
2487           if (IS_PCREL10 ($5))
2488             {
2489               notethat ("BRCC: IF !CC JUMP  pcrel11m2\n");
2490               $$ = BRCC (0, 1, $5);
2491             }
2492           else
2493             return yyerror ("Bad jump offset");
2494         }
2495
2496         | IF CCREG JUMP expr
2497         {
2498           if (IS_PCREL10 ($4))
2499             {
2500               notethat ("BRCC: IF CC JUMP  pcrel11m2\n");
2501               $$ = BRCC (1, 0, $4);
2502             }
2503           else
2504             return yyerror ("Bad jump offset");
2505         }
2506
2507         | IF CCREG JUMP expr LPAREN BP RPAREN
2508         {
2509           if (IS_PCREL10 ($4))
2510             {
2511               notethat ("BRCC: IF !CC JUMP  pcrel11m2\n");
2512               $$ = BRCC (1, 1, $4);
2513             }
2514           else
2515             return yyerror ("Bad jump offset");
2516         }
2517         | NOP
2518         {
2519           notethat ("ProgCtrl: NOP\n");
2520           $$ = PROGCTRL (0, 0);
2521         }
2522
2523         | RTS
2524         {
2525           notethat ("ProgCtrl: RTS\n");
2526           $$ = PROGCTRL (1, 0);
2527         }
2528
2529         | RTI
2530         {
2531           notethat ("ProgCtrl: RTI\n");
2532           $$ = PROGCTRL (1, 1);
2533         }
2534
2535         | RTX
2536         {
2537           notethat ("ProgCtrl: RTX\n");
2538           $$ = PROGCTRL (1, 2);
2539         }
2540
2541         | RTN
2542         {
2543           notethat ("ProgCtrl: RTN\n");
2544           $$ = PROGCTRL (1, 3);
2545         }
2546
2547         | RTE
2548         {
2549           notethat ("ProgCtrl: RTE\n");
2550           $$ = PROGCTRL (1, 4);
2551         }
2552
2553         | IDLE
2554         {
2555           notethat ("ProgCtrl: IDLE\n");
2556           $$ = PROGCTRL (2, 0);
2557         }
2558
2559         | CSYNC
2560         {
2561           notethat ("ProgCtrl: CSYNC\n");
2562           $$ = PROGCTRL (2, 3);
2563         }
2564
2565         | SSYNC
2566         {
2567           notethat ("ProgCtrl: SSYNC\n");
2568           $$ = PROGCTRL (2, 4);
2569         }
2570
2571         | EMUEXCPT
2572         {
2573           notethat ("ProgCtrl: EMUEXCPT\n");
2574           $$ = PROGCTRL (2, 5);
2575         }
2576
2577         | CLI REG
2578         {
2579           if (IS_DREG ($2))
2580             {
2581               notethat ("ProgCtrl: CLI dregs\n");
2582               $$ = PROGCTRL (3, $2.regno & CODE_MASK);
2583             }
2584           else
2585             return yyerror ("Dreg expected for CLI");
2586         }
2587
2588         | STI REG
2589         {
2590           if (IS_DREG ($2))
2591             {
2592               notethat ("ProgCtrl: STI dregs\n");
2593               $$ = PROGCTRL (4, $2.regno & CODE_MASK);
2594             }
2595           else
2596             return yyerror ("Dreg expected for STI");
2597         }
2598
2599         | JUMP LPAREN REG RPAREN
2600         {
2601           if (IS_PREG ($3))
2602             {
2603               notethat ("ProgCtrl: JUMP (pregs )\n");
2604               $$ = PROGCTRL (5, $3.regno & CODE_MASK);
2605             }
2606           else
2607             return yyerror ("Bad register for indirect jump");
2608         }
2609
2610         | CALL LPAREN REG RPAREN
2611         {
2612           if (IS_PREG ($3))
2613             {
2614               notethat ("ProgCtrl: CALL (pregs )\n");
2615               $$ = PROGCTRL (6, $3.regno & CODE_MASK);
2616             }
2617           else
2618             return yyerror ("Bad register for indirect call");
2619         }
2620
2621         | CALL LPAREN PC PLUS REG RPAREN
2622         {
2623           if (IS_PREG ($5))
2624             {
2625               notethat ("ProgCtrl: CALL (PC + pregs )\n");
2626               $$ = PROGCTRL (7, $5.regno & CODE_MASK);
2627             }
2628           else
2629             return yyerror ("Bad register for indirect call");
2630         }
2631
2632         | JUMP LPAREN PC PLUS REG RPAREN
2633         {
2634           if (IS_PREG ($5))
2635             {
2636               notethat ("ProgCtrl: JUMP (PC + pregs )\n");
2637               $$ = PROGCTRL (8, $5.regno & CODE_MASK);
2638             }
2639           else
2640             return yyerror ("Bad register for indirect jump");
2641         }
2642
2643         | RAISE expr
2644         {
2645           if (IS_UIMM ($2, 4))
2646             {
2647               notethat ("ProgCtrl: RAISE uimm4\n");
2648               $$ = PROGCTRL (9, uimm4 ($2));
2649             }
2650           else
2651             return yyerror ("Bad value for RAISE");
2652         }
2653
2654         | EXCPT expr
2655         {
2656                 notethat ("ProgCtrl: EMUEXCPT\n");
2657                 $$ = PROGCTRL (10, uimm4 ($2));
2658         }
2659
2660         | TESTSET LPAREN REG RPAREN
2661         {
2662           if (IS_PREG ($3))
2663             {
2664               notethat ("ProgCtrl: TESTSET (pregs )\n");
2665               $$ = PROGCTRL (11, $3.regno & CODE_MASK);
2666             }
2667           else
2668             return yyerror ("Preg expected");
2669         }
2670
2671         | JUMP expr
2672         {
2673           if (IS_PCREL12 ($2))
2674             {
2675               notethat ("UJUMP: JUMP pcrel12\n");
2676               $$ = UJUMP ($2);
2677             }
2678           else
2679             return yyerror ("Bad value for relative jump");
2680         }
2681
2682         | JUMP_DOT_S expr
2683         {
2684           if (IS_PCREL12 ($2))
2685             {
2686               notethat ("UJUMP: JUMP_DOT_S pcrel12\n");
2687               $$ = UJUMP($2);
2688             }
2689           else
2690             return yyerror ("Bad value for relative jump");
2691         }
2692
2693         | JUMP_DOT_L expr
2694         {
2695           if (IS_PCREL24 ($2))
2696             {
2697               notethat ("CALLa: jump.l pcrel24\n");
2698               $$ = CALLA ($2, 0);
2699             }
2700           else
2701             return yyerror ("Bad value for long jump");
2702         }
2703
2704         | JUMP_DOT_L pltpc
2705         {
2706           if (IS_PCREL24 ($2))
2707             {
2708               notethat ("CALLa: jump.l pcrel24\n");
2709               $$ = CALLA ($2, 2);
2710             }
2711           else
2712             return yyerror ("Bad value for long jump");
2713         }
2714
2715         | CALL expr
2716         {
2717           if (IS_PCREL24 ($2))
2718             {
2719               notethat ("CALLa: CALL pcrel25m2\n");
2720               $$ = CALLA ($2, 1);
2721             }
2722           else
2723             return yyerror ("Bad call address");
2724         }
2725         | CALL pltpc
2726         {
2727           if (IS_PCREL24 ($2))
2728             {
2729               notethat ("CALLa: CALL pcrel25m2\n");
2730               $$ = CALLA ($2, 2);
2731             }
2732           else
2733             return yyerror ("Bad call address");
2734         }
2735
2736 /* ALU2ops.  */
2737 /* ALU2op:      DIVQ (dregs, dregs).  */
2738         | DIVQ LPAREN REG COMMA REG RPAREN
2739         {
2740           if (IS_DREG ($3) && IS_DREG ($5))
2741             $$ = ALU2OP (&$3, &$5, 8);
2742           else
2743             return yyerror ("Bad registers for DIVQ");
2744         }
2745
2746         | DIVS LPAREN REG COMMA REG RPAREN
2747         {
2748           if (IS_DREG ($3) && IS_DREG ($5))
2749             $$ = ALU2OP (&$3, &$5, 9);
2750           else
2751             return yyerror ("Bad registers for DIVS");
2752         }
2753
2754         | REG ASSIGN MINUS REG vsmod
2755         {
2756           if (IS_DREG ($1) && IS_DREG ($4))
2757             {
2758               if ($5.r0 == 0 && $5.s0 == 0 && $5.aop == 0)
2759                 {
2760                   notethat ("ALU2op: dregs = - dregs\n");
2761                   $$ = ALU2OP (&$1, &$4, 14);
2762                 }
2763               else if ($5.r0 == 1 && $5.s0 == 0 && $5.aop == 3)
2764                 {
2765                   notethat ("dsp32alu: dregs = - dregs (.)\n");
2766                   $$ = DSP32ALU (15, 0, 0, &$1, &$4, 0, $5.s0, 0, 3);
2767                 }
2768               else
2769                 {
2770                   notethat ("dsp32alu: dregs = - dregs (.)\n");
2771                   $$ = DSP32ALU (7, 0, 0, &$1, &$4, 0, $5.s0, 0, 3);
2772                 }
2773             }
2774           else
2775             return yyerror ("Dregs expected");
2776         }
2777
2778         | REG ASSIGN TILDA REG
2779         {
2780           if (IS_DREG ($1) && IS_DREG ($4))
2781             {
2782               notethat ("ALU2op: dregs = ~dregs\n");
2783               $$ = ALU2OP (&$1, &$4, 15);
2784             }
2785           else
2786             return yyerror ("Dregs expected");
2787         }
2788
2789         | REG _GREATER_GREATER_ASSIGN REG
2790         {
2791           if (IS_DREG ($1) && IS_DREG ($3))
2792             {
2793               notethat ("ALU2op: dregs >>= dregs\n");
2794               $$ = ALU2OP (&$1, &$3, 1);
2795             }
2796           else
2797             return yyerror ("Dregs expected");
2798         }
2799
2800         | REG _GREATER_GREATER_ASSIGN expr
2801         {
2802           if (IS_DREG ($1) && IS_UIMM ($3, 5))
2803             {
2804               notethat ("LOGI2op: dregs >>= uimm5\n");
2805               $$ = LOGI2OP ($1, uimm5 ($3), 6);
2806             }
2807           else
2808             return yyerror ("Dregs expected or value error");
2809         }
2810
2811         | REG _GREATER_GREATER_GREATER_THAN_ASSIGN REG
2812         {
2813           if (IS_DREG ($1) && IS_DREG ($3))
2814             {
2815               notethat ("ALU2op: dregs >>>= dregs\n");
2816               $$ = ALU2OP (&$1, &$3, 0);
2817             }
2818           else
2819             return yyerror ("Dregs expected");
2820         }
2821
2822         | REG _LESS_LESS_ASSIGN REG
2823         {
2824           if (IS_DREG ($1) && IS_DREG ($3))
2825             {
2826               notethat ("ALU2op: dregs <<= dregs\n");
2827               $$ = ALU2OP (&$1, &$3, 2);
2828             }
2829           else
2830             return yyerror ("Dregs expected");
2831         }
2832
2833         | REG _LESS_LESS_ASSIGN expr
2834         {
2835           if (IS_DREG ($1) && IS_UIMM ($3, 5))
2836             {
2837               notethat ("LOGI2op: dregs <<= uimm5\n");
2838               $$ = LOGI2OP ($1, uimm5 ($3), 7);
2839             }
2840           else
2841             return yyerror ("Dregs expected or const value error");
2842         }
2843
2844
2845         | REG _GREATER_GREATER_GREATER_THAN_ASSIGN expr
2846         {
2847           if (IS_DREG ($1) && IS_UIMM ($3, 5))
2848             {
2849               notethat ("LOGI2op: dregs >>>= uimm5\n");
2850               $$ = LOGI2OP ($1, uimm5 ($3), 5);
2851             }
2852           else
2853             return yyerror ("Dregs expected");
2854         }
2855
2856 /* Cache Control.  */
2857
2858         | FLUSH LBRACK REG RBRACK
2859         {
2860           notethat ("CaCTRL: FLUSH [ pregs ]\n");
2861           if (IS_PREG ($3))
2862             $$ = CACTRL (&$3, 0, 2);
2863           else
2864             return yyerror ("Bad register(s) for FLUSH");
2865         }
2866
2867         | FLUSH reg_with_postinc
2868         {
2869           if (IS_PREG ($2))
2870             {
2871               notethat ("CaCTRL: FLUSH [ pregs ++ ]\n");
2872               $$ = CACTRL (&$2, 1, 2);
2873             }
2874           else
2875             return yyerror ("Bad register(s) for FLUSH");
2876         }
2877
2878         | FLUSHINV LBRACK REG RBRACK
2879         {
2880           if (IS_PREG ($3))
2881             {
2882               notethat ("CaCTRL: FLUSHINV [ pregs ]\n");
2883               $$ = CACTRL (&$3, 0, 1);
2884             }
2885           else
2886             return yyerror ("Bad register(s) for FLUSH");
2887         }
2888
2889         | FLUSHINV reg_with_postinc
2890         {
2891           if (IS_PREG ($2))
2892             {
2893               notethat ("CaCTRL: FLUSHINV [ pregs ++ ]\n");
2894               $$ = CACTRL (&$2, 1, 1);
2895             }
2896           else
2897             return yyerror ("Bad register(s) for FLUSH");
2898         }
2899
2900 /* CaCTRL:      IFLUSH [pregs].  */
2901         | IFLUSH LBRACK REG RBRACK
2902         {
2903           if (IS_PREG ($3))
2904             {
2905               notethat ("CaCTRL: IFLUSH [ pregs ]\n");
2906               $$ = CACTRL (&$3, 0, 3);
2907             }
2908           else
2909             return yyerror ("Bad register(s) for FLUSH");
2910         }
2911
2912         | IFLUSH reg_with_postinc
2913         {
2914           if (IS_PREG ($2))
2915             {
2916               notethat ("CaCTRL: IFLUSH [ pregs ++ ]\n");
2917               $$ = CACTRL (&$2, 1, 3);
2918             }
2919           else
2920             return yyerror ("Bad register(s) for FLUSH");
2921         }
2922
2923         | PREFETCH LBRACK REG RBRACK
2924         {
2925           if (IS_PREG ($3))
2926             {
2927               notethat ("CaCTRL: PREFETCH [ pregs ]\n");
2928               $$ = CACTRL (&$3, 0, 0);
2929             }
2930           else
2931             return yyerror ("Bad register(s) for PREFETCH");
2932         }
2933
2934         | PREFETCH reg_with_postinc
2935         {
2936           if (IS_PREG ($2))
2937             {
2938               notethat ("CaCTRL: PREFETCH [ pregs ++ ]\n");
2939               $$ = CACTRL (&$2, 1, 0);
2940             }
2941           else
2942             return yyerror ("Bad register(s) for PREFETCH");
2943         }
2944
2945 /* LOAD/STORE.  */
2946 /* LDST:        B [ pregs <post_op> ] = dregs.  */
2947
2948         | B LBRACK REG post_op RBRACK ASSIGN REG
2949         {
2950           if (!IS_DREG ($7))
2951             return yyerror ("Dreg expected for source operand");
2952           if (!IS_PREG ($3))
2953             return yyerror ("Preg expected in address");
2954
2955           notethat ("LDST: B [ pregs <post_op> ] = dregs\n");
2956           $$ = LDST (&$3, &$7, $4.x0, 2, 0, 1);
2957         }
2958
2959 /* LDSTidxI:    B [ pregs + imm16 ] = dregs.  */
2960         | B LBRACK REG plus_minus expr RBRACK ASSIGN REG
2961         {
2962           Expr_Node *tmp = $5;
2963
2964           if (!IS_DREG ($8))
2965             return yyerror ("Dreg expected for source operand");
2966           if (!IS_PREG ($3))
2967             return yyerror ("Preg expected in address");
2968
2969           if (IS_RELOC ($5))
2970             return yyerror ("Plain symbol used as offset");
2971
2972           if ($4.r0)
2973             tmp = unary (Expr_Op_Type_NEG, tmp);
2974
2975           if (in_range_p (tmp, -32768, 32767, 0))
2976             {
2977               notethat ("LDST: B [ pregs + imm16 ] = dregs\n");
2978               $$ = LDSTIDXI (&$3, &$8, 1, 2, 0, $5);
2979             }
2980           else
2981             return yyerror ("Displacement out of range");
2982         }
2983
2984
2985 /* LDSTii:      W [ pregs + uimm4s2 ] = dregs.  */
2986         | W LBRACK REG plus_minus expr RBRACK ASSIGN REG
2987         {
2988           Expr_Node *tmp = $5;
2989
2990           if (!IS_DREG ($8))
2991             return yyerror ("Dreg expected for source operand");
2992           if (!IS_PREG ($3))
2993             return yyerror ("Preg expected in address");
2994
2995           if ($4.r0)
2996             tmp = unary (Expr_Op_Type_NEG, tmp);
2997
2998           if (IS_RELOC ($5))
2999             return yyerror ("Plain symbol used as offset");
3000
3001           if (in_range_p (tmp, 0, 30, 1))
3002             {
3003               notethat ("LDSTii: W [ pregs +- uimm5m2 ] = dregs\n");
3004               $$ = LDSTII (&$3, &$8, tmp, 1, 1);
3005             }
3006           else if (in_range_p (tmp, -65536, 65535, 1))
3007             {
3008               notethat ("LDSTidxI: W [ pregs + imm17m2 ] = dregs\n");
3009               $$ = LDSTIDXI (&$3, &$8, 1, 1, 0, tmp);
3010             }
3011           else
3012             return yyerror ("Displacement out of range");
3013         }
3014
3015 /* LDST:        W [ pregs <post_op> ] = dregs.  */
3016         | W LBRACK REG post_op RBRACK ASSIGN REG
3017         {
3018           if (!IS_DREG ($7))
3019             return yyerror ("Dreg expected for source operand");
3020           if (!IS_PREG ($3))
3021             return yyerror ("Preg expected in address");
3022
3023           notethat ("LDST: W [ pregs <post_op> ] = dregs\n");
3024           $$ = LDST (&$3, &$7, $4.x0, 1, 0, 1);
3025         }
3026
3027         | W LBRACK REG post_op RBRACK ASSIGN HALF_REG
3028         {
3029           if (!IS_DREG ($7))
3030             return yyerror ("Dreg expected for source operand");
3031           if ($4.x0 == 2)
3032             {
3033               if (!IS_IREG ($3) && !IS_PREG ($3))
3034                 return yyerror ("Ireg or Preg expected in address");
3035             }
3036           else if (!IS_IREG ($3))
3037             return yyerror ("Ireg expected in address");
3038
3039           if (IS_IREG ($3))
3040             {
3041               notethat ("dspLDST: W [ iregs <post_op> ] = dregs_half\n");
3042               $$ = DSPLDST (&$3, 1 + IS_H ($7), &$7, $4.x0, 1);
3043             }
3044           else
3045             {
3046               notethat ("LDSTpmod: W [ pregs ] = dregs_half\n");
3047               $$ = LDSTPMOD (&$3, &$7, &$3, 1 + IS_H ($7), 1);
3048             }
3049         }
3050
3051 /* LDSTiiFP:    [ FP - const ] = dpregs.  */
3052         | LBRACK REG plus_minus expr RBRACK ASSIGN REG
3053         {
3054           Expr_Node *tmp = $4;
3055           int ispreg = IS_PREG ($7);
3056
3057           if (!IS_PREG ($2))
3058             return yyerror ("Preg expected in address");
3059
3060           if (!IS_DREG ($7) && !ispreg)
3061             return yyerror ("Preg expected for source operand");
3062
3063           if ($3.r0)
3064             tmp = unary (Expr_Op_Type_NEG, tmp);
3065
3066           if (IS_RELOC ($4))
3067             return yyerror ("Plain symbol used as offset");
3068
3069           if (in_range_p (tmp, 0, 63, 3))
3070             {
3071               notethat ("LDSTii: dpregs = [ pregs + uimm6m4 ]\n");
3072               $$ = LDSTII (&$2, &$7, tmp, 1, ispreg ? 3 : 0);
3073             }
3074           else if ($2.regno == REG_FP && in_range_p (tmp, -128, 0, 3))
3075             {
3076               notethat ("LDSTiiFP: dpregs = [ FP - uimm7m4 ]\n");
3077               tmp = unary (Expr_Op_Type_NEG, tmp);
3078               $$ = LDSTIIFP (tmp, &$7, 1);
3079             }
3080           else if (in_range_p (tmp, -131072, 131071, 3))
3081             {
3082               notethat ("LDSTidxI: [ pregs + imm18m4 ] = dpregs\n");
3083               $$ = LDSTIDXI (&$2, &$7, 1, 0, ispreg ? 1 : 0, tmp);
3084             }
3085           else
3086             return yyerror ("Displacement out of range");
3087         }
3088
3089         | REG ASSIGN W LBRACK REG plus_minus expr RBRACK xpmod
3090         {
3091           Expr_Node *tmp = $7;
3092           if (!IS_DREG ($1))
3093             return yyerror ("Dreg expected for destination operand");
3094           if (!IS_PREG ($5))
3095             return yyerror ("Preg expected in address");
3096
3097           if ($6.r0)
3098             tmp = unary (Expr_Op_Type_NEG, tmp);
3099
3100           if (IS_RELOC ($7))
3101             return yyerror ("Plain symbol used as offset");
3102
3103           if (in_range_p (tmp, 0, 30, 1))
3104             {
3105               notethat ("LDSTii: dregs = W [ pregs + uimm5m2 ] (.)\n");
3106               $$ = LDSTII (&$5, &$1, tmp, 0, 1 << $9.r0);
3107             }
3108           else if (in_range_p (tmp, -65536, 65535, 1))
3109             {
3110               notethat ("LDSTidxI: dregs = W [ pregs + imm17m2 ] (.)\n");
3111               $$ = LDSTIDXI (&$5, &$1, 0, 1, $9.r0, tmp);
3112             }
3113           else
3114             return yyerror ("Displacement out of range");
3115         }
3116
3117         | HALF_REG ASSIGN W LBRACK REG post_op RBRACK
3118         {
3119           if (!IS_DREG ($1))
3120             return yyerror ("Dreg expected for source operand");
3121           if ($6.x0 == 2)
3122             {
3123               if (!IS_IREG ($5) && !IS_PREG ($5))
3124                 return yyerror ("Ireg or Preg expected in address");
3125             }
3126           else if (!IS_IREG ($5))
3127             return yyerror ("Ireg expected in address");
3128
3129           if (IS_IREG ($5))
3130             {
3131               notethat ("dspLDST: dregs_half = W [ iregs <post_op> ]\n");
3132               $$ = DSPLDST(&$5, 1 + IS_H ($1), &$1, $6.x0, 0);
3133             }
3134           else
3135             {
3136               notethat ("LDSTpmod: dregs_half = W [ pregs <post_op> ]\n");
3137               $$ = LDSTPMOD (&$5, &$1, &$5, 1 + IS_H ($1), 0);
3138             }
3139         }
3140
3141
3142         | REG ASSIGN W LBRACK REG post_op RBRACK xpmod
3143         {
3144           if (!IS_DREG ($1))
3145             return yyerror ("Dreg expected for destination operand");
3146           if (!IS_PREG ($5))
3147             return yyerror ("Preg expected in address");
3148
3149           notethat ("LDST: dregs = W [ pregs <post_op> ] (.)\n");
3150           $$ = LDST (&$5, &$1, $6.x0, 1, $8.r0, 0);
3151         }
3152
3153         | REG ASSIGN W LBRACK REG _PLUS_PLUS REG RBRACK xpmod
3154         {
3155           if (!IS_DREG ($1))
3156             return yyerror ("Dreg expected for destination operand");
3157           if (!IS_PREG ($5) || !IS_PREG ($7))
3158             return yyerror ("Preg expected in address");
3159
3160           notethat ("LDSTpmod: dregs = W [ pregs ++ pregs ] (.)\n");
3161           $$ = LDSTPMOD (&$5, &$1, &$7, 3, $9.r0);
3162         }
3163
3164         | HALF_REG ASSIGN W LBRACK REG _PLUS_PLUS REG RBRACK
3165         {
3166           if (!IS_DREG ($1))
3167             return yyerror ("Dreg expected for destination operand");
3168           if (!IS_PREG ($5) || !IS_PREG ($7))
3169             return yyerror ("Preg expected in address");
3170
3171           notethat ("LDSTpmod: dregs_half = W [ pregs ++ pregs ]\n");
3172           $$ = LDSTPMOD (&$5, &$1, &$7, 1 + IS_H ($1), 0);
3173         }
3174
3175         | LBRACK REG post_op RBRACK ASSIGN REG
3176         {
3177           if (!IS_IREG ($2) && !IS_PREG ($2))
3178             return yyerror ("Ireg or Preg expected in address");
3179           else if (IS_IREG ($2) && !IS_DREG ($6))
3180             return yyerror ("Dreg expected for source operand");
3181           else if (IS_PREG ($2) && !IS_DREG ($6) && !IS_PREG ($6))
3182             return yyerror ("Dreg or Preg expected for source operand");
3183
3184           if (IS_IREG ($2))
3185             {
3186               notethat ("dspLDST: [ iregs <post_op> ] = dregs\n");
3187               $$ = DSPLDST(&$2, 0, &$6, $3.x0, 1);
3188             }
3189           else if (IS_DREG ($6))
3190             {
3191               notethat ("LDST: [ pregs <post_op> ] = dregs\n");
3192               $$ = LDST (&$2, &$6, $3.x0, 0, 0, 1);
3193             }
3194           else
3195             {
3196               notethat ("LDST: [ pregs <post_op> ] = pregs\n");
3197               $$ = LDST (&$2, &$6, $3.x0, 0, 1, 1);
3198             }
3199         }
3200
3201         | LBRACK REG _PLUS_PLUS REG RBRACK ASSIGN REG
3202         {
3203           if (!IS_DREG ($7))
3204             return yyerror ("Dreg expected for source operand");
3205
3206           if (IS_IREG ($2) && IS_MREG ($4))
3207             {
3208               notethat ("dspLDST: [ iregs ++ mregs ] = dregs\n");
3209               $$ = DSPLDST(&$2, $4.regno & CODE_MASK, &$7, 3, 1);
3210             }
3211           else if (IS_PREG ($2) && IS_PREG ($4))
3212             {
3213               notethat ("LDSTpmod: [ pregs ++ pregs ] = dregs\n");
3214               $$ = LDSTPMOD (&$2, &$7, &$4, 0, 1);
3215             }
3216           else
3217             return yyerror ("Preg ++ Preg or Ireg ++ Mreg expected in address");
3218         }
3219
3220         | W LBRACK REG _PLUS_PLUS REG RBRACK ASSIGN HALF_REG
3221         {
3222           if (!IS_DREG ($8))
3223             return yyerror ("Dreg expected for source operand");
3224
3225           if (IS_PREG ($3) && IS_PREG ($5))
3226             {
3227               notethat ("LDSTpmod: W [ pregs ++ pregs ] = dregs_half\n");
3228               $$ = LDSTPMOD (&$3, &$8, &$5, 1 + IS_H ($8), 1);
3229             }
3230           else
3231             return yyerror ("Preg ++ Preg expected in address");
3232         }
3233
3234         | REG ASSIGN B LBRACK REG plus_minus expr RBRACK xpmod
3235         {
3236           Expr_Node *tmp = $7;
3237           if (!IS_DREG ($1))
3238             return yyerror ("Dreg expected for destination operand");
3239           if (!IS_PREG ($5))
3240             return yyerror ("Preg expected in address");
3241
3242           if ($6.r0)
3243             tmp = unary (Expr_Op_Type_NEG, tmp);
3244
3245           if (IS_RELOC ($7))
3246             return yyerror ("Plain symbol used as offset");
3247
3248           if (in_range_p (tmp, -32768, 32767, 0))
3249             {
3250               notethat ("LDSTidxI: dregs = B [ pregs + imm16 ] (%c)\n",
3251                        $9.r0 ? 'X' : 'Z');
3252               $$ = LDSTIDXI (&$5, &$1, 0, 2, $9.r0, tmp);
3253             }
3254           else
3255             return yyerror ("Displacement out of range");
3256         }
3257
3258         | REG ASSIGN B LBRACK REG post_op RBRACK xpmod
3259         {
3260           if (!IS_DREG ($1))
3261             return yyerror ("Dreg expected for destination operand");
3262           if (!IS_PREG ($5))
3263             return yyerror ("Preg expected in address");
3264
3265           notethat ("LDST: dregs = B [ pregs <post_op> ] (%c)\n",
3266                     $8.r0 ? 'X' : 'Z');
3267           $$ = LDST (&$5, &$1, $6.x0, 2, $8.r0, 0);
3268         }
3269
3270         | REG ASSIGN LBRACK REG _PLUS_PLUS REG RBRACK
3271         {
3272           if (!IS_DREG ($1))
3273             return yyerror ("Dreg expected for destination operand");
3274
3275           if (IS_IREG ($4) && IS_MREG ($6))
3276             {
3277               notethat ("dspLDST: dregs = [ iregs ++ mregs ]\n");
3278               $$ = DSPLDST(&$4, $6.regno & CODE_MASK, &$1, 3, 0);
3279             }
3280           else if (IS_PREG ($4) && IS_PREG ($6))
3281             {
3282               notethat ("LDSTpmod: dregs = [ pregs ++ pregs ]\n");
3283               $$ = LDSTPMOD (&$4, &$1, &$6, 0, 0);
3284             }
3285           else
3286             return yyerror ("Preg ++ Preg or Ireg ++ Mreg expected in address");
3287         }
3288
3289         | REG ASSIGN LBRACK REG plus_minus got_or_expr RBRACK
3290         {
3291           Expr_Node *tmp = $6;
3292           int ispreg = IS_PREG ($1);
3293           int isgot = IS_RELOC($6);
3294
3295           if (!IS_PREG ($4))
3296             return yyerror ("Preg expected in address");
3297
3298           if (!IS_DREG ($1) && !ispreg)
3299             return yyerror ("Dreg or Preg expected for destination operand");
3300
3301           if (tmp->type == Expr_Node_Reloc
3302               && strcmp (tmp->value.s_value,
3303                          "_current_shared_library_p5_offset_") != 0)
3304             return yyerror ("Plain symbol used as offset");
3305
3306           if ($5.r0)
3307             tmp = unary (Expr_Op_Type_NEG, tmp);
3308
3309           if (isgot)
3310             {
3311               notethat ("LDSTidxI: dpregs = [ pregs + sym@got ]\n");
3312               $$ = LDSTIDXI (&$4, &$1, 0, 0, ispreg ? 1 : 0, tmp);
3313             }
3314           else if (in_range_p (tmp, 0, 63, 3))
3315             {
3316               notethat ("LDSTii: dpregs = [ pregs + uimm7m4 ]\n");
3317               $$ = LDSTII (&$4, &$1, tmp, 0, ispreg ? 3 : 0);
3318             }
3319           else if ($4.regno == REG_FP && in_range_p (tmp, -128, 0, 3))
3320             {
3321               notethat ("LDSTiiFP: dpregs = [ FP - uimm7m4 ]\n");
3322               tmp = unary (Expr_Op_Type_NEG, tmp);
3323               $$ = LDSTIIFP (tmp, &$1, 0);
3324             }
3325           else if (in_range_p (tmp, -131072, 131071, 3))
3326             {
3327               notethat ("LDSTidxI: dpregs = [ pregs + imm18m4 ]\n");
3328               $$ = LDSTIDXI (&$4, &$1, 0, 0, ispreg ? 1 : 0, tmp);
3329
3330             }
3331           else
3332             return yyerror ("Displacement out of range");
3333         }
3334
3335         | REG ASSIGN LBRACK REG post_op RBRACK
3336         {
3337           if (!IS_IREG ($4) && !IS_PREG ($4))
3338             return yyerror ("Ireg or Preg expected in address");
3339           else if (IS_IREG ($4) && !IS_DREG ($1))
3340             return yyerror ("Dreg expected in destination operand");
3341           else if (IS_PREG ($4) && !IS_DREG ($1) && !IS_PREG ($1)
3342                    && ($4.regno != REG_SP || !IS_ALLREG ($1) || $5.x0 != 0))
3343             return yyerror ("Dreg or Preg expected in destination operand");
3344
3345           if (IS_IREG ($4))
3346             {
3347               notethat ("dspLDST: dregs = [ iregs <post_op> ]\n");
3348               $$ = DSPLDST (&$4, 0, &$1, $5.x0, 0);
3349             }
3350           else if (IS_DREG ($1))
3351             {
3352               notethat ("LDST: dregs = [ pregs <post_op> ]\n");
3353               $$ = LDST (&$4, &$1, $5.x0, 0, 0, 0);
3354             }
3355           else if (IS_PREG ($1))
3356             {
3357               if (REG_SAME ($1, $4) && $5.x0 != 2)
3358                 return yyerror ("Pregs can't be same");
3359
3360               notethat ("LDST: pregs = [ pregs <post_op> ]\n");
3361               $$ = LDST (&$4, &$1, $5.x0, 0, 1, 0);
3362             }
3363           else
3364             {
3365               notethat ("PushPopReg: allregs = [ SP ++ ]\n");
3366               $$ = PUSHPOPREG (&$1, 0);
3367             }
3368         }
3369
3370
3371 /*  PushPopMultiple.  */
3372         | reg_with_predec ASSIGN LPAREN REG COLON expr COMMA REG COLON expr RPAREN
3373         {
3374           if ($1.regno != REG_SP)
3375             yyerror ("Stack Pointer expected");
3376           if ($4.regno == REG_R7
3377               && IN_RANGE ($6, 0, 7)
3378               && $8.regno == REG_P5
3379               && IN_RANGE ($10, 0, 5))
3380             {
3381               notethat ("PushPopMultiple: [ -- SP ] = (R7 : reglim , P5 : reglim )\n");
3382               $$ = PUSHPOPMULTIPLE (imm5 ($6), imm5 ($10), 1, 1, 1);
3383             }
3384           else
3385             return yyerror ("Bad register for PushPopMultiple");
3386         }
3387
3388         | reg_with_predec ASSIGN LPAREN REG COLON expr RPAREN
3389         {
3390           if ($1.regno != REG_SP)
3391             yyerror ("Stack Pointer expected");
3392
3393           if ($4.regno == REG_R7 && IN_RANGE ($6, 0, 7))
3394             {
3395               notethat ("PushPopMultiple: [ -- SP ] = (R7 : reglim )\n");
3396               $$ = PUSHPOPMULTIPLE (imm5 ($6), 0, 1, 0, 1);
3397             }
3398           else if ($4.regno == REG_P5 && IN_RANGE ($6, 0, 6))
3399             {
3400               notethat ("PushPopMultiple: [ -- SP ] = (P5 : reglim )\n");
3401               $$ = PUSHPOPMULTIPLE (0, imm5 ($6), 0, 1, 1);
3402             }
3403           else
3404             return yyerror ("Bad register for PushPopMultiple");
3405         }
3406
3407         | LPAREN REG COLON expr COMMA REG COLON expr RPAREN ASSIGN reg_with_postinc
3408         {
3409           if ($11.regno != REG_SP)
3410             yyerror ("Stack Pointer expected");
3411           if ($2.regno == REG_R7 && (IN_RANGE ($4, 0, 7))
3412               && $6.regno == REG_P5 && (IN_RANGE ($8, 0, 6)))
3413             {
3414               notethat ("PushPopMultiple: (R7 : reglim , P5 : reglim ) = [ SP ++ ]\n");
3415               $$ = PUSHPOPMULTIPLE (imm5 ($4), imm5 ($8), 1, 1, 0);
3416             }
3417           else
3418             return yyerror ("Bad register range for PushPopMultiple");
3419         }
3420
3421         | LPAREN REG COLON expr RPAREN ASSIGN reg_with_postinc
3422         {
3423           if ($7.regno != REG_SP)
3424             yyerror ("Stack Pointer expected");
3425
3426           if ($2.regno == REG_R7 && IN_RANGE ($4, 0, 7))
3427             {
3428               notethat ("PushPopMultiple: (R7 : reglim ) = [ SP ++ ]\n");
3429               $$ = PUSHPOPMULTIPLE (imm5 ($4), 0, 1, 0, 0);
3430             }
3431           else if ($2.regno == REG_P5 && IN_RANGE ($4, 0, 6))
3432             {
3433               notethat ("PushPopMultiple: (P5 : reglim ) = [ SP ++ ]\n");
3434               $$ = PUSHPOPMULTIPLE (0, imm5 ($4), 0, 1, 0);
3435             }
3436           else
3437             return yyerror ("Bad register range for PushPopMultiple");
3438         }
3439
3440         | reg_with_predec ASSIGN REG
3441         {
3442           if ($1.regno != REG_SP)
3443             yyerror ("Stack Pointer expected");
3444
3445           if (IS_ALLREG ($3))
3446             {
3447               notethat ("PushPopReg: [ -- SP ] = allregs\n");
3448               $$ = PUSHPOPREG (&$3, 1);
3449             }
3450           else
3451             return yyerror ("Bad register for PushPopReg");
3452         }
3453
3454 /* Linkage.  */
3455
3456         | LINK expr
3457         {
3458           if (IS_URANGE (16, $2, 0, 4))
3459             $$ = LINKAGE (0, uimm16s4 ($2));
3460           else
3461             return yyerror ("Bad constant for LINK");
3462         }
3463
3464         | UNLINK
3465         {
3466                 notethat ("linkage: UNLINK\n");
3467                 $$ = LINKAGE (1, 0);
3468         }
3469
3470
3471 /* LSETUP.  */
3472
3473         | LSETUP LPAREN expr COMMA expr RPAREN REG
3474         {
3475           if (IS_PCREL4 ($3) && IS_LPPCREL10 ($5) && IS_CREG ($7))
3476             {
3477               notethat ("LoopSetup: LSETUP (pcrel4 , lppcrel10 ) counters\n");
3478               $$ = LOOPSETUP ($3, &$7, 0, $5, 0);
3479             }
3480           else
3481             return yyerror ("Bad register or values for LSETUP");
3482
3483         }
3484         | LSETUP LPAREN expr COMMA expr RPAREN REG ASSIGN REG
3485         {
3486           if (IS_PCREL4 ($3) && IS_LPPCREL10 ($5)
3487               && IS_PREG ($9) && IS_CREG ($7))
3488             {
3489               notethat ("LoopSetup: LSETUP (pcrel4 , lppcrel10 ) counters = pregs\n");
3490               $$ = LOOPSETUP ($3, &$7, 1, $5, &$9);
3491             }
3492           else
3493             return yyerror ("Bad register or values for LSETUP");
3494         }
3495
3496         | LSETUP LPAREN expr COMMA expr RPAREN REG ASSIGN REG GREATER_GREATER expr
3497         {
3498           if (IS_PCREL4 ($3) && IS_LPPCREL10 ($5)
3499               && IS_PREG ($9) && IS_CREG ($7)
3500               && EXPR_VALUE ($11) == 1)
3501             {
3502               notethat ("LoopSetup: LSETUP (pcrel4 , lppcrel10 ) counters = pregs >> 1\n");
3503               $$ = LOOPSETUP ($3, &$7, 3, $5, &$9);
3504             }
3505           else
3506             return yyerror ("Bad register or values for LSETUP");
3507         }
3508
3509 /* LOOP.  */
3510         | LOOP expr REG
3511         {
3512           if (!IS_RELOC ($2))
3513             return yyerror ("Invalid expression in loop statement");
3514           if (!IS_CREG ($3))
3515             return yyerror ("Invalid loop counter register");
3516         $$ = bfin_gen_loop ($2, &$3, 0, 0);
3517         }
3518         | LOOP expr REG ASSIGN REG
3519         {
3520           if (IS_RELOC ($2) && IS_PREG ($5) && IS_CREG ($3))
3521             {
3522               notethat ("Loop: LOOP expr counters = pregs\n");
3523               $$ = bfin_gen_loop ($2, &$3, 1, &$5);
3524             }
3525           else
3526             return yyerror ("Bad register or values for LOOP");
3527         }
3528         | LOOP expr REG ASSIGN REG GREATER_GREATER expr
3529         {
3530           if (IS_RELOC ($2) && IS_PREG ($5) && IS_CREG ($3) && EXPR_VALUE ($7) == 1)
3531             {
3532               notethat ("Loop: LOOP expr counters = pregs >> 1\n");
3533               $$ = bfin_gen_loop ($2, &$3, 3, &$5);
3534             }
3535           else
3536             return yyerror ("Bad register or values for LOOP");
3537         }
3538
3539 /* LOOP_BEGIN.  */
3540         | LOOP_BEGIN expr
3541         {
3542           if (!IS_RELOC ($2))
3543             return yyerror ("Invalid expression in LOOP_BEGIN statement");
3544
3545           bfin_loop_beginend ($2, 1);
3546           $$ = 0;
3547         }
3548
3549 /* LOOP_END.  */
3550         | LOOP_END expr
3551         {
3552           if (!IS_RELOC ($2))
3553             return yyerror ("Invalid expression in LOOP_END statement");
3554
3555           bfin_loop_beginend ($2, 0);
3556           $$ = 0;
3557         }
3558
3559 /* pseudoDEBUG.  */
3560
3561         | DBG
3562         {
3563           notethat ("pseudoDEBUG: DBG\n");
3564           $$ = bfin_gen_pseudodbg (3, 7, 0);
3565         }
3566         | DBG REG_A
3567         {
3568           notethat ("pseudoDEBUG: DBG REG_A\n");
3569           $$ = bfin_gen_pseudodbg (3, IS_A1 ($2), 0);
3570         }
3571         | DBG REG
3572         {
3573           notethat ("pseudoDEBUG: DBG allregs\n");
3574           $$ = bfin_gen_pseudodbg (0, $2.regno & CODE_MASK, $2.regno & CLASS_MASK);
3575         }
3576
3577         | DBGCMPLX LPAREN REG RPAREN
3578         {
3579           if (!IS_DREG ($3))
3580             return yyerror ("Dregs expected");
3581           notethat ("pseudoDEBUG: DBGCMPLX (dregs )\n");
3582           $$ = bfin_gen_pseudodbg (3, 6, $3.regno & CODE_MASK);
3583         }
3584
3585         | DBGHALT
3586         {
3587           notethat ("psedoDEBUG: DBGHALT\n");
3588           $$ = bfin_gen_pseudodbg (3, 5, 0);
3589         }
3590
3591         | HLT
3592         {
3593           notethat ("psedoDEBUG: HLT\n");
3594           $$ = bfin_gen_pseudodbg (3, 4, 0);
3595         }
3596
3597         | DBGA LPAREN HALF_REG COMMA expr RPAREN
3598         {
3599           notethat ("pseudodbg_assert: DBGA (regs_lo/hi , uimm16 )\n");
3600           $$ = bfin_gen_pseudodbg_assert (IS_H ($3), &$3, uimm16 ($5));
3601         }
3602
3603         | DBGAH LPAREN REG COMMA expr RPAREN
3604         {
3605           notethat ("pseudodbg_assert: DBGAH (regs , uimm16 )\n");
3606           $$ = bfin_gen_pseudodbg_assert (3, &$3, uimm16 ($5));
3607         }
3608
3609         | DBGAL LPAREN REG COMMA expr RPAREN
3610         {
3611           notethat ("psedodbg_assert: DBGAL (regs , uimm16 )\n");
3612           $$ = bfin_gen_pseudodbg_assert (2, &$3, uimm16 ($5));
3613         }
3614
3615
3616 ;
3617
3618 /*  AUX RULES.  */
3619
3620 /*  Register rules.  */
3621
3622 REG_A:  REG_A_DOUBLE_ZERO
3623         {
3624         $$ = $1;
3625         }
3626         | REG_A_DOUBLE_ONE
3627         {
3628         $$ = $1;
3629         }
3630         ;
3631
3632
3633 /*  Modifiers. */
3634
3635 opt_mode:
3636         {
3637         $$.MM = 0;
3638         $$.mod = 0;
3639         }
3640         | LPAREN M COMMA MMOD RPAREN
3641         {
3642         $$.MM = 1;
3643         $$.mod = $4;
3644         }
3645         | LPAREN MMOD COMMA M RPAREN
3646         {
3647         $$.MM = 1;
3648         $$.mod = $2;
3649         }
3650         | LPAREN MMOD RPAREN
3651         {
3652         $$.MM = 0;
3653         $$.mod = $2;
3654         }
3655         | LPAREN M RPAREN
3656         {
3657         $$.MM = 1;
3658         $$.mod = 0;
3659         }
3660         ;
3661
3662 asr_asl: LPAREN ASL RPAREN
3663         {
3664         $$.r0 = 1;
3665         }
3666         | LPAREN ASR RPAREN
3667         {
3668         $$.r0 = 0;
3669         }
3670         ;
3671
3672 sco:
3673         {
3674         $$.s0 = 0;
3675         $$.x0 = 0;
3676         }
3677         | S
3678         {
3679         $$.s0 = 1;
3680         $$.x0 = 0;
3681         }
3682         | CO
3683         {
3684         $$.s0 = 0;
3685         $$.x0 = 1;
3686         }
3687         | SCO
3688         {
3689         $$.s0 = 1;
3690         $$.x0 = 1;
3691         }
3692         ;
3693
3694 asr_asl_0:
3695         ASL
3696         {
3697         $$.r0 = 1;
3698         }
3699         | ASR
3700         {
3701         $$.r0 = 0;
3702         }
3703         ;
3704
3705 amod0:
3706         {
3707         $$.s0 = 0;
3708         $$.x0 = 0;
3709         }
3710         | LPAREN sco RPAREN
3711         {
3712         $$.s0 = $2.s0;
3713         $$.x0 = $2.x0;
3714         }
3715         ;
3716
3717 amod1:
3718         {
3719         $$.s0 = 0;
3720         $$.x0 = 0;
3721         $$.aop = 0;
3722         }
3723         | LPAREN NS RPAREN
3724         {
3725         $$.s0 = 0;
3726         $$.x0 = 0;
3727         $$.aop = 1;
3728         }
3729         | LPAREN S RPAREN
3730         {
3731         $$.s0 = 1;
3732         $$.x0 = 0;
3733         $$.aop = 1;
3734         }
3735         ;
3736
3737 amod2:
3738         {
3739         $$.r0 = 0;
3740         $$.s0 = 0;
3741         $$.x0 = 0;
3742         }
3743         | LPAREN asr_asl_0 RPAREN
3744         {
3745         $$.r0 = 2 + $2.r0;
3746         $$.s0 = 0;
3747         $$.x0 = 0;
3748         }
3749         | LPAREN sco RPAREN
3750         {
3751         $$.r0 = 0;
3752         $$.s0 = $2.s0;
3753         $$.x0 = $2.x0;
3754         }
3755         | LPAREN asr_asl_0 COMMA sco RPAREN
3756         {
3757         $$.r0 = 2 + $2.r0;
3758         $$.s0 = $4.s0;
3759         $$.x0 = $4.x0;
3760         }
3761         | LPAREN sco COMMA asr_asl_0 RPAREN
3762         {
3763         $$.r0 = 2 + $4.r0;
3764         $$.s0 = $2.s0;
3765         $$.x0 = $2.x0;
3766         }
3767         ;
3768
3769 xpmod:
3770         {
3771         $$.r0 = 0;
3772         }
3773         | LPAREN Z RPAREN
3774         {
3775         $$.r0 = 0;
3776         }
3777         | LPAREN X RPAREN
3778         {
3779         $$.r0 = 1;
3780         }
3781         ;
3782
3783 xpmod1:
3784         {
3785         $$.r0 = 0;
3786         }
3787         | LPAREN X RPAREN
3788         {
3789         $$.r0 = 0;
3790         }
3791         | LPAREN Z RPAREN
3792         {
3793         $$.r0 = 1;
3794         }
3795         ;
3796
3797 vsmod:
3798         {
3799         $$.r0 = 0;
3800         $$.s0 = 0;
3801         $$.aop = 0;
3802         }
3803         | LPAREN NS RPAREN
3804         {
3805         $$.r0 = 0;
3806         $$.s0 = 0;
3807         $$.aop = 3;
3808         }
3809         | LPAREN S RPAREN
3810         {
3811         $$.r0 = 0;
3812         $$.s0 = 1;
3813         $$.aop = 3;
3814         }
3815         | LPAREN V RPAREN
3816         {
3817         $$.r0 = 1;
3818         $$.s0 = 0;
3819         $$.aop = 3;
3820         }
3821         | LPAREN V COMMA S RPAREN
3822         {
3823         $$.r0 = 1;
3824         $$.s0 = 1;
3825         }
3826         | LPAREN S COMMA V RPAREN
3827         {
3828         $$.r0 = 1;
3829         $$.s0 = 1;
3830         }
3831         ;
3832
3833 vmod:
3834         {
3835         $$.r0 = 0;
3836         }
3837         | LPAREN V RPAREN
3838         {
3839         $$.r0 = 1;
3840         }
3841         ;
3842
3843 smod:
3844         {
3845         $$.s0 = 0;
3846         }
3847         | LPAREN S RPAREN
3848         {
3849         $$.s0 = 1;
3850         }
3851         ;
3852
3853 searchmod:
3854           GE
3855         {
3856         $$.r0 = 1;
3857         }
3858         | GT
3859         {
3860         $$.r0 = 0;
3861         }
3862         | LE
3863         {
3864         $$.r0 = 3;
3865         }
3866         | LT
3867         {
3868         $$.r0 = 2;
3869         }
3870         ;
3871
3872 aligndir:
3873         {
3874         $$.r0 = 0;
3875         }
3876         | LPAREN R RPAREN
3877         {
3878         $$.r0 = 1;
3879         }
3880         ;
3881
3882 byteop_mod:
3883         LPAREN R RPAREN
3884         {
3885         $$.r0 = 0;
3886         $$.s0 = 1;
3887         }
3888         | LPAREN MMOD RPAREN
3889         {
3890         if ($2 != M_T)
3891           return yyerror ("Bad modifier");
3892         $$.r0 = 1;
3893         $$.s0 = 0;
3894         }
3895         | LPAREN MMOD COMMA R RPAREN
3896         {
3897         if ($2 != M_T)
3898           return yyerror ("Bad modifier");
3899         $$.r0 = 1;
3900         $$.s0 = 1;
3901         }
3902         | LPAREN R COMMA MMOD RPAREN
3903         {
3904         if ($4 != M_T)
3905           return yyerror ("Bad modifier");
3906         $$.r0 = 1;
3907         $$.s0 = 1;
3908         }
3909         ;
3910
3911
3912
3913 c_align:
3914         ALIGN8
3915         {
3916         $$.r0 = 0;
3917         }
3918         | ALIGN16
3919         {
3920         $$.r0 = 1;
3921         }
3922         | ALIGN24
3923         {
3924         $$.r0 = 2;
3925         }
3926         ;
3927
3928 w32_or_nothing:
3929         {
3930         $$.r0 = 0;
3931         }
3932         | LPAREN MMOD RPAREN
3933         {
3934           if ($2 == M_W32)
3935             $$.r0 = 1;
3936           else
3937             return yyerror ("Only (W32) allowed");
3938         }
3939         ;
3940
3941 iu_or_nothing:
3942         {
3943         $$.r0 = 1;
3944         }
3945         | LPAREN MMOD RPAREN
3946         {
3947           if ($2 == M_IU)
3948             $$.r0 = 3;
3949           else
3950             return yyerror ("(IU) expected");
3951         }
3952         ;
3953
3954 reg_with_predec: LBRACK _MINUS_MINUS REG RBRACK
3955         {
3956         $$ = $3;
3957         }
3958         ;
3959
3960 reg_with_postinc: LBRACK REG _PLUS_PLUS RBRACK
3961         {
3962         $$ = $2;
3963         }
3964         ;
3965
3966 /* Operators.  */
3967
3968 min_max:
3969         MIN
3970         {
3971         $$.r0 = 1;
3972         }
3973         | MAX
3974         {
3975         $$.r0 = 0;
3976         }
3977         ;
3978
3979 op_bar_op:
3980         _PLUS_BAR_PLUS
3981         {
3982         $$.r0 = 0;
3983         }
3984         | _PLUS_BAR_MINUS
3985         {
3986         $$.r0 = 1;
3987         }
3988         | _MINUS_BAR_PLUS
3989         {
3990         $$.r0 = 2;
3991         }
3992         | _MINUS_BAR_MINUS
3993         {
3994         $$.r0 = 3;
3995         }
3996         ;
3997
3998 plus_minus:
3999         PLUS
4000         {
4001         $$.r0 = 0;
4002         }
4003         | MINUS
4004         {
4005         $$.r0 = 1;
4006         }
4007         ;
4008
4009 rnd_op:
4010         LPAREN RNDH RPAREN
4011         {
4012           $$.r0 = 1;    /* HL.  */
4013           $$.s0 = 0;    /* s.  */
4014           $$.x0 = 0;    /* x.  */
4015           $$.aop = 0;   /* aop.  */
4016         }
4017
4018         | LPAREN TH RPAREN
4019         {
4020           $$.r0 = 1;    /* HL.  */
4021           $$.s0 = 0;    /* s.  */
4022           $$.x0 = 0;    /* x.  */
4023           $$.aop = 1;   /* aop.  */
4024         }
4025
4026         | LPAREN RNDL RPAREN
4027         {
4028           $$.r0 = 0;    /* HL.  */
4029           $$.s0 = 0;    /* s.  */
4030           $$.x0 = 0;    /* x.  */
4031           $$.aop = 0;   /* aop.  */
4032         }
4033
4034         | LPAREN TL RPAREN
4035         {
4036           $$.r0 = 0;    /* HL.  */
4037           $$.s0 = 0;    /* s.  */
4038           $$.x0 = 0;    /* x.  */
4039           $$.aop = 1;
4040         }
4041
4042         | LPAREN RNDH COMMA R RPAREN
4043         {
4044           $$.r0 = 1;    /* HL.  */
4045           $$.s0 = 1;    /* s.  */
4046           $$.x0 = 0;    /* x.  */
4047           $$.aop = 0;   /* aop.  */
4048         }
4049         | LPAREN TH COMMA R RPAREN
4050         {
4051           $$.r0 = 1;    /* HL.  */
4052           $$.s0 = 1;    /* s.  */
4053           $$.x0 = 0;    /* x.  */
4054           $$.aop = 1;   /* aop.  */
4055         }
4056         | LPAREN RNDL COMMA R RPAREN
4057         {
4058           $$.r0 = 0;    /* HL.  */
4059           $$.s0 = 1;    /* s.  */
4060           $$.x0 = 0;    /* x.  */
4061           $$.aop = 0;   /* aop.  */
4062         }
4063
4064         | LPAREN TL COMMA R RPAREN
4065         {
4066           $$.r0 = 0;    /* HL.  */
4067           $$.s0 = 1;    /* s.  */
4068           $$.x0 = 0;    /* x.  */
4069           $$.aop = 1;   /* aop.  */
4070         }
4071         ;
4072
4073 b3_op:
4074         LPAREN LO RPAREN
4075         {
4076           $$.s0 = 0;    /* s.  */
4077           $$.x0 = 0;    /* HL.  */
4078         }
4079         | LPAREN HI RPAREN
4080         {
4081           $$.s0 = 0;    /* s.  */
4082           $$.x0 = 1;    /* HL.  */
4083         }
4084         | LPAREN LO COMMA R RPAREN
4085         {
4086           $$.s0 = 1;    /* s.  */
4087           $$.x0 = 0;    /* HL.  */
4088         }
4089         | LPAREN HI COMMA R RPAREN
4090         {
4091           $$.s0 = 1;    /* s.  */
4092           $$.x0 = 1;    /* HL.  */
4093         }
4094         ;
4095
4096 post_op:
4097         {
4098         $$.x0 = 2;
4099         }
4100         | _PLUS_PLUS
4101         {
4102         $$.x0 = 0;
4103         }
4104         | _MINUS_MINUS
4105         {
4106         $$.x0 = 1;
4107         }
4108         ;
4109
4110 /* Assignments, Macfuncs.  */
4111
4112 a_assign:
4113         REG_A ASSIGN
4114         {
4115         $$ = $1;
4116         }
4117         ;
4118
4119 a_minusassign:
4120         REG_A _MINUS_ASSIGN
4121         {
4122         $$ = $1;
4123         }
4124         ;
4125
4126 a_plusassign:
4127         REG_A _PLUS_ASSIGN
4128         {
4129         $$ = $1;
4130         }
4131         ;
4132
4133 assign_macfunc:
4134         REG ASSIGN REG_A
4135         {
4136           if (IS_A1 ($3) && IS_EVEN ($1))
4137             return yyerror ("Cannot move A1 to even register");
4138           else if (!IS_A1 ($3) && !IS_EVEN ($1))
4139             return yyerror ("Cannot move A0 to odd register");
4140
4141           $$.w = 1;
4142           $$.P = 1;
4143           $$.n = IS_A1 ($3);
4144           $$.op = 3;
4145           $$.dst = $1;
4146           $$.s0.regno = 0;
4147           $$.s1.regno = 0;
4148         }
4149         | a_macfunc
4150         {
4151           $$ = $1;
4152           $$.w = 0; $$.P = 0;
4153           $$.dst.regno = 0;
4154         }
4155         | REG ASSIGN LPAREN a_macfunc RPAREN
4156         {
4157           if ($4.n && IS_EVEN ($1))
4158             return yyerror ("Cannot move A1 to even register");
4159           else if (!$4.n && !IS_EVEN ($1))
4160             return yyerror ("Cannot move A0 to odd register");
4161
4162           $$ = $4;
4163           $$.w = 1;
4164           $$.P = 1;
4165           $$.dst = $1;
4166         }
4167
4168         | HALF_REG ASSIGN LPAREN a_macfunc RPAREN
4169         {
4170           if ($4.n && !IS_H ($1))
4171             return yyerror ("Cannot move A1 to low half of register");
4172           else if (!$4.n && IS_H ($1))
4173             return yyerror ("Cannot move A0 to high half of register");
4174
4175           $$ = $4;
4176           $$.w = 1;
4177           $$.P = 0;
4178           $$.dst = $1;
4179         }
4180
4181         | HALF_REG ASSIGN REG_A
4182         {
4183           if (IS_A1 ($3) && !IS_H ($1))
4184             return yyerror ("Cannot move A1 to low half of register");
4185           else if (!IS_A1 ($3) && IS_H ($1))
4186             return yyerror ("Cannot move A0 to high half of register");
4187
4188           $$.w = 1;
4189           $$.P = 0;
4190           $$.n = IS_A1 ($3);
4191           $$.op = 3;
4192           $$.dst = $1;
4193           $$.s0.regno = 0;
4194           $$.s1.regno = 0;
4195         }
4196         ;
4197
4198 a_macfunc:
4199         a_assign multiply_halfregs
4200         {
4201           $$.n = IS_A1 ($1);
4202           $$.op = 0;
4203           $$.s0 = $2.s0;
4204           $$.s1 = $2.s1;
4205         }
4206         | a_plusassign multiply_halfregs
4207         {
4208           $$.n = IS_A1 ($1);
4209           $$.op = 1;
4210           $$.s0 = $2.s0;
4211           $$.s1 = $2.s1;
4212         }
4213         | a_minusassign multiply_halfregs
4214         {
4215           $$.n = IS_A1 ($1);
4216           $$.op = 2;
4217           $$.s0 = $2.s0;
4218           $$.s1 = $2.s1;
4219         }
4220         ;
4221
4222 multiply_halfregs:
4223         HALF_REG STAR HALF_REG
4224         {
4225           if (IS_DREG ($1) && IS_DREG ($3))
4226             {
4227               $$.s0 = $1;
4228               $$.s1 = $3;
4229             }
4230           else
4231             return yyerror ("Dregs expected");
4232         }
4233         ;
4234
4235 cc_op:
4236         ASSIGN
4237         {
4238         $$.r0 = 0;
4239         }
4240         | _BAR_ASSIGN
4241         {
4242         $$.r0 = 1;
4243         }
4244         | _AMPERSAND_ASSIGN
4245         {
4246         $$.r0 = 2;
4247         }
4248         | _CARET_ASSIGN
4249         {
4250         $$.r0 = 3;
4251         }
4252         ;
4253
4254 ccstat:
4255         CCREG cc_op STATUS_REG
4256         {
4257           $$.r0 = $3.regno;
4258           $$.x0 = $2.r0;
4259           $$.s0 = 0;
4260         }
4261         | CCREG cc_op V
4262         {
4263           $$.r0 = 0x18;
4264           $$.x0 = $2.r0;
4265           $$.s0 = 0;
4266         }
4267         | STATUS_REG cc_op CCREG
4268         {
4269           $$.r0 = $1.regno;
4270           $$.x0 = $2.r0;
4271           $$.s0 = 1;
4272         }
4273         | V cc_op CCREG
4274         {
4275           $$.r0 = 0x18;
4276           $$.x0 = $2.r0;
4277           $$.s0 = 1;
4278         }
4279         ;
4280
4281 /* Expressions and Symbols.  */
4282
4283 symbol: SYMBOL
4284         {
4285         Expr_Node_Value val;
4286         val.s_value = S_GET_NAME($1);
4287         $$ = Expr_Node_Create (Expr_Node_Reloc, val, NULL, NULL);
4288         }
4289         ;
4290
4291 any_gotrel:
4292         GOT
4293         { $$ = BFD_RELOC_BFIN_GOT; }
4294         | GOT17M4
4295         { $$ = BFD_RELOC_BFIN_GOT17M4; }
4296         | FUNCDESC_GOT17M4
4297         { $$ = BFD_RELOC_BFIN_FUNCDESC_GOT17M4; }
4298         ;
4299
4300 got:    symbol AT any_gotrel
4301         {
4302         Expr_Node_Value val;
4303         val.i_value = $3;
4304         $$ = Expr_Node_Create (Expr_Node_GOT_Reloc, val, $1, NULL);
4305         }
4306         ;
4307
4308 got_or_expr:    got
4309         {
4310         $$ = $1;
4311         }
4312         | expr
4313         {
4314         $$ = $1;
4315         }
4316         ;
4317
4318 pltpc :
4319         symbol AT PLTPC
4320         {
4321         $$ = $1;
4322         }
4323         ;
4324
4325 eterm: NUMBER
4326         {
4327         Expr_Node_Value val;
4328         val.i_value = $1;
4329         $$ = Expr_Node_Create (Expr_Node_Constant, val, NULL, NULL);
4330         }
4331         | symbol
4332         {
4333         $$ = $1;
4334         }
4335         | LPAREN expr_1 RPAREN
4336         {
4337         $$ = $2;
4338         }
4339         | TILDA expr_1
4340         {
4341         $$ = unary (Expr_Op_Type_COMP, $2);
4342         }
4343         | MINUS expr_1 %prec TILDA
4344         {
4345         $$ = unary (Expr_Op_Type_NEG, $2);
4346         }
4347         ;
4348
4349 expr: expr_1
4350         {
4351         $$ = $1;
4352         }
4353         ;
4354
4355 expr_1: expr_1 STAR expr_1
4356         {
4357         $$ = binary (Expr_Op_Type_Mult, $1, $3);
4358         }
4359         | expr_1 SLASH expr_1
4360         {
4361         $$ = binary (Expr_Op_Type_Div, $1, $3);
4362         }
4363         | expr_1 PERCENT expr_1
4364         {
4365         $$ = binary (Expr_Op_Type_Mod, $1, $3);
4366         }
4367         | expr_1 PLUS expr_1
4368         {
4369         $$ = binary (Expr_Op_Type_Add, $1, $3);
4370         }
4371         | expr_1 MINUS expr_1
4372         {
4373         $$ = binary (Expr_Op_Type_Sub, $1, $3);
4374         }
4375         | expr_1 LESS_LESS expr_1
4376         {
4377         $$ = binary (Expr_Op_Type_Lshift, $1, $3);
4378         }
4379         | expr_1 GREATER_GREATER expr_1
4380         {
4381         $$ = binary (Expr_Op_Type_Rshift, $1, $3);
4382         }
4383         | expr_1 AMPERSAND expr_1
4384         {
4385         $$ = binary (Expr_Op_Type_BAND, $1, $3);
4386         }
4387         | expr_1 CARET expr_1
4388         {
4389         $$ = binary (Expr_Op_Type_LOR, $1, $3);
4390         }
4391         | expr_1 BAR expr_1
4392         {
4393         $$ = binary (Expr_Op_Type_BOR, $1, $3);
4394         }
4395         | eterm
4396         {
4397         $$ = $1;
4398         }
4399         ;
4400
4401
4402 %%
4403
4404 EXPR_T
4405 mkexpr (int x, SYMBOL_T s)
4406 {
4407   EXPR_T e = (EXPR_T) ALLOCATE (sizeof (struct expression_cell));
4408   e->value = x;
4409   EXPR_SYMBOL(e) = s;
4410   return e;
4411 }
4412
4413 static int
4414 value_match (Expr_Node *exp, int sz, int sign, int mul, int issigned)
4415 {
4416   int umax = (1 << sz) - 1;
4417   int min = -1 << (sz - 1);
4418   int max = (1 << (sz - 1)) - 1;
4419
4420   int v = (EXPR_VALUE (exp)) & 0xffffffff;
4421
4422   if ((v % mul) != 0)
4423     {
4424       error ("%s:%d: Value Error -- Must align to %d\n", __FILE__, __LINE__, mul);
4425       return 0;
4426     }
4427
4428   v /= mul;
4429
4430   if (sign)
4431     v = -v;
4432
4433   if (issigned)
4434     {
4435       if (v >= min && v <= max) return 1;
4436
4437 #ifdef DEBUG
4438       fprintf(stderr, "signed value %lx out of range\n", v * mul);
4439 #endif
4440       return 0;
4441     }
4442   if (v <= umax && v >= 0)
4443     return 1;
4444 #ifdef DEBUG
4445   fprintf(stderr, "unsigned value %lx out of range\n", v * mul);
4446 #endif
4447   return 0;
4448 }
4449
4450 /* Return the expression structure that allows symbol operations.
4451    If the left and right children are constants, do the operation.  */
4452 static Expr_Node *
4453 binary (Expr_Op_Type op, Expr_Node *x, Expr_Node *y)
4454 {
4455   Expr_Node_Value val;
4456
4457   if (x->type == Expr_Node_Constant && y->type == Expr_Node_Constant)
4458     {
4459       switch (op)
4460         {
4461         case Expr_Op_Type_Add:
4462           x->value.i_value += y->value.i_value;
4463           break;
4464         case Expr_Op_Type_Sub:
4465           x->value.i_value -= y->value.i_value;
4466           break;
4467         case Expr_Op_Type_Mult:
4468           x->value.i_value *= y->value.i_value;
4469           break;
4470         case Expr_Op_Type_Div:
4471           if (y->value.i_value == 0)
4472             error ("Illegal Expression:  Division by zero.");
4473           else
4474             x->value.i_value /= y->value.i_value;
4475           break;
4476         case Expr_Op_Type_Mod:
4477           x->value.i_value %= y->value.i_value;
4478           break;
4479         case Expr_Op_Type_Lshift:
4480           x->value.i_value <<= y->value.i_value;
4481           break;
4482         case Expr_Op_Type_Rshift:
4483           x->value.i_value >>= y->value.i_value;
4484           break;
4485         case Expr_Op_Type_BAND:
4486           x->value.i_value &= y->value.i_value;
4487           break;
4488         case Expr_Op_Type_BOR:
4489           x->value.i_value |= y->value.i_value;
4490           break;
4491         case Expr_Op_Type_BXOR:
4492           x->value.i_value ^= y->value.i_value;
4493           break;
4494         case Expr_Op_Type_LAND:
4495           x->value.i_value = x->value.i_value && y->value.i_value;
4496           break;
4497         case Expr_Op_Type_LOR:
4498           x->value.i_value = x->value.i_value || y->value.i_value;
4499           break;
4500
4501         default:
4502           error ("%s:%d: Internal assembler error\n", __FILE__, __LINE__);
4503         }
4504       return x;
4505     }
4506   /* Canonicalize order to EXPR OP CONSTANT.  */
4507   if (x->type == Expr_Node_Constant)
4508     {
4509       Expr_Node *t = x;
4510       x = y;
4511       y = t;
4512     }
4513   /* Canonicalize subtraction of const to addition of negated const.  */
4514   if (op == Expr_Op_Type_Sub && y->type == Expr_Node_Constant)
4515     {
4516       op = Expr_Op_Type_Add;
4517       y->value.i_value = -y->value.i_value;
4518     }
4519   if (y->type == Expr_Node_Constant && x->type == Expr_Node_Binop
4520       && x->Right_Child->type == Expr_Node_Constant)
4521     {
4522       if (op == x->value.op_value && x->value.op_value == Expr_Op_Type_Add)
4523         {
4524           x->Right_Child->value.i_value += y->value.i_value;
4525           return x;
4526         }
4527     }
4528
4529   /* Create a new expression structure.  */
4530   val.op_value = op;
4531   return Expr_Node_Create (Expr_Node_Binop, val, x, y);
4532 }
4533
4534 static Expr_Node *
4535 unary (Expr_Op_Type op, Expr_Node *x)
4536 {
4537   if (x->type == Expr_Node_Constant)
4538     {
4539       switch (op)
4540         {
4541         case Expr_Op_Type_NEG:
4542           x->value.i_value = -x->value.i_value;
4543           break;
4544         case Expr_Op_Type_COMP:
4545           x->value.i_value = ~x->value.i_value;
4546           break;
4547         default:
4548           error ("%s:%d: Internal assembler error\n", __FILE__, __LINE__);
4549         }
4550       return x;
4551     }
4552   else
4553     {
4554       /* Create a new expression structure.  */
4555       Expr_Node_Value val;
4556       val.op_value = op;
4557       return Expr_Node_Create (Expr_Node_Unop, val, x, NULL);
4558     }
4559 }
4560
4561 int debug_codeselection = 0;
4562 static void
4563 notethat (char *format, ...)
4564 {
4565   va_list ap;
4566   va_start (ap, format);
4567   if (debug_codeselection)
4568     {
4569       vfprintf (errorf, format, ap);
4570     }
4571   va_end (ap);
4572 }
4573
4574 #ifdef TEST
4575 main (int argc, char **argv)
4576 {
4577   yyparse();
4578 }
4579 #endif
4580