1 /* ----------------------------------------------------------------------- *
3 * Copyright 1996-2013 The NASM Authors - All Rights Reserved
4 * See the file AUTHORS included with the NASM distribution for
5 * the specific copyright holders.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
19 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
20 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 * ----------------------------------------------------------------------- */
35 * parser.c source line parser for the Netwide Assembler
56 extern int in_abs_seg; /* ABSOLUTE segment flag */
57 extern int32_t abs_seg; /* ABSOLUTE segment */
58 extern int32_t abs_offset; /* ABSOLUTE segment offset */
60 static int is_comma_next(void);
63 static struct tokenval tokval;
64 static struct location *location; /* Pointer to current line's segment,offset */
66 void parser_global_info(struct location * locp)
71 static int prefix_slot(int prefix)
104 nasm_error(ERR_PANIC, "Invalid value %d passed to prefix_slot()", prefix);
109 static void process_size_override(insn *result, operand *op)
111 if (tasm_compatible_mode) {
112 switch ((int)tokval.t_integer) {
113 /* For TASM compatibility a size override inside the
114 * brackets changes the size of the operand, not the
115 * address type of the operand as it does in standard
116 * NASM syntax. Hence:
118 * mov eax,[DWORD val]
120 * is valid syntax in TASM compatibility mode. Note that
121 * you lose the ability to override the default address
122 * type for the instruction, but we never use anything
123 * but 32-bit flat model addressing in our code.
145 nasm_error(ERR_NONFATAL,
146 "invalid operand size specification");
150 /* Standard NASM compatible syntax */
151 switch ((int)tokval.t_integer) {
153 op->eaflags |= EAF_TIMESTWO;
156 op->eaflags |= EAF_REL;
159 op->eaflags |= EAF_ABS;
163 op->eaflags |= EAF_BYTEOFFS;
168 if (result->prefixes[PPS_ASIZE] &&
169 result->prefixes[PPS_ASIZE] != tokval.t_integer)
170 nasm_error(ERR_NONFATAL,
171 "conflicting address size specifications");
173 result->prefixes[PPS_ASIZE] = tokval.t_integer;
177 op->eaflags |= EAF_WORDOFFS;
182 op->eaflags |= EAF_WORDOFFS;
186 op->eaflags |= EAF_WORDOFFS;
189 nasm_error(ERR_NONFATAL, "invalid size specification in"
190 " effective address");
197 * when two or more decorators follow a register operand,
198 * consecutive decorators are parsed here.
199 * opmask and zeroing decorators can be placed in any order.
200 * e.g. zmm1 {k2}{z} or zmm2 {z,k3}
201 * decorator(s) are placed at the end of an operand.
203 static bool parse_braces(decoflags_t *decoflags)
206 bool recover = false;
210 if (i == TOKEN_OPMASK) {
211 if (*decoflags & OPMASK_MASK) {
212 nasm_error(ERR_NONFATAL, "opmask k%lu is already set",
213 *decoflags & OPMASK_MASK);
214 *decoflags &= ~OPMASK_MASK;
216 *decoflags |= VAL_OPMASK(nasm_regvals[tokval.t_integer]);
217 } else if (i == TOKEN_DECORATOR) {
218 switch (tokval.t_integer) {
221 * according to AVX512 spec, only zeroing/merging decorator
222 * is supported with opmask
224 *decoflags |= GEN_Z(0);
227 nasm_error(ERR_NONFATAL, "{%s} is not an expected decorator",
231 } else if (i == ',' || i == TOKEN_EOS){
234 nasm_error(ERR_NONFATAL, "only a series of valid decorators"
239 i = stdscan(NULL, &tokval);
245 insn *parse_line(int pass, char *buffer, insn *result, ldfunc ldef)
247 bool insn_is_label = false;
248 struct eval_hints hints;
256 result->forw_ref = false;
260 i = stdscan(NULL, &tokval);
262 result->label = NULL; /* Assume no label */
263 result->eops = NULL; /* must do this, whatever happens */
264 result->operands = 0; /* must initialize this */
265 result->evex_rm = 0; /* Ensure EVEX rounding mode is reset */
266 result->evex_brerop = -1; /* Reset EVEX broadcasting/ER op position */
268 /* Ignore blank lines */
275 (i != TOKEN_REG || !IS_SREG(tokval.t_integer))) {
276 nasm_error(ERR_NONFATAL,
277 "label or instruction expected at start of line");
281 if (i == TOKEN_ID || (insn_is_label && i == TOKEN_INSN)) {
282 /* there's a label here */
284 result->label = tokval.t_charptr;
285 i = stdscan(NULL, &tokval);
286 if (i == ':') { /* skip over the optional colon */
287 i = stdscan(NULL, &tokval);
289 nasm_error(ERR_WARNING | ERR_WARN_OL | ERR_PASS1,
290 "label alone on a line without a colon might be in error");
292 if (i != TOKEN_INSN || tokval.t_integer != I_EQU) {
294 * FIXME: location->segment could be NO_SEG, in which case
295 * it is possible we should be passing 'abs_seg'. Look into this.
296 * Work out whether that is *really* what we should be doing.
297 * Generally fix things. I think this is right as it is, but
298 * am still not certain.
300 ldef(result->label, in_abs_seg ? abs_seg : location->segment,
301 location->offset, NULL, true, false);
305 /* Just a label here */
309 nasm_build_assert(P_none != 0);
310 memset(result->prefixes, P_none, sizeof(result->prefixes));
313 while (i == TOKEN_PREFIX ||
314 (i == TOKEN_REG && IS_SREG(tokval.t_integer))) {
318 * Handle special case: the TIMES prefix.
320 if (i == TOKEN_PREFIX && tokval.t_integer == P_TIMES) {
323 i = stdscan(NULL, &tokval);
324 value = evaluate(stdscan, NULL, &tokval, NULL, pass0, nasm_error, NULL);
326 if (!value) /* Error in evaluator */
328 if (!is_simple(value)) {
329 nasm_error(ERR_NONFATAL,
330 "non-constant argument supplied to TIMES");
333 result->times = value->value;
334 if (value->value < 0 && pass0 == 2) {
335 nasm_error(ERR_NONFATAL, "TIMES value %"PRId64" is negative",
341 int slot = prefix_slot(tokval.t_integer);
342 if (result->prefixes[slot]) {
343 if (result->prefixes[slot] == tokval.t_integer)
344 nasm_error(ERR_WARNING | ERR_PASS1,
345 "instruction has redundant prefixes");
347 nasm_error(ERR_NONFATAL,
348 "instruction has conflicting prefixes");
350 result->prefixes[slot] = tokval.t_integer;
351 i = stdscan(NULL, &tokval);
355 if (i != TOKEN_INSN) {
359 for (j = 0; j < MAXPREFIX; j++) {
360 if ((pfx = result->prefixes[j]) != P_none)
364 if (i == 0 && pfx != P_none) {
366 * Instruction prefixes are present, but no actual
367 * instruction. This is allowed: at this point we
368 * invent a notional instruction of RESB 0.
370 result->opcode = I_RESB;
371 result->operands = 1;
372 result->oprs[0].type = IMMEDIATE;
373 result->oprs[0].offset = 0L;
374 result->oprs[0].segment = result->oprs[0].wrt = NO_SEG;
377 nasm_error(ERR_NONFATAL, "parser: instruction expected");
382 result->opcode = tokval.t_integer;
383 result->condition = tokval.t_inttwo;
386 * INCBIN cannot be satisfied with incorrectly
387 * evaluated operands, since the correct values _must_ be known
388 * on the first pass. Hence, even in pass one, we set the
389 * `critical' flag on calling evaluate(), so that it will bomb
390 * out on undefined symbols.
392 if (result->opcode == I_INCBIN) {
393 critical = (pass0 < 2 ? 1 : 2);
396 critical = (pass == 2 ? 2 : 0);
398 if (result->opcode == I_DB || result->opcode == I_DW ||
399 result->opcode == I_DD || result->opcode == I_DQ ||
400 result->opcode == I_DT || result->opcode == I_DO ||
401 result->opcode == I_DY || result->opcode == I_DZ ||
402 result->opcode == I_INCBIN) {
403 extop *eop, **tail = &result->eops, **fixptr;
407 result->eops_float = false;
410 * Begin to read the DB/DW/DD/DQ/DT/DO/DY/DZ/INCBIN operands.
413 i = stdscan(NULL, &tokval);
416 else if (first && i == ':') {
417 insn_is_label = true;
422 eop = *tail = nasm_malloc(sizeof(extop));
425 eop->type = EOT_NOTHING;
430 * is_comma_next() here is to distinguish this from
431 * a string used as part of an expression...
433 if (i == TOKEN_STR && is_comma_next()) {
434 eop->type = EOT_DB_STRING;
435 eop->stringval = tokval.t_charptr;
436 eop->stringlen = tokval.t_inttwo;
437 i = stdscan(NULL, &tokval); /* eat the comma */
438 } else if (i == TOKEN_STRFUNC) {
440 const char *funcname = tokval.t_charptr;
441 enum strfunc func = tokval.t_integer;
442 i = stdscan(NULL, &tokval);
445 i = stdscan(NULL, &tokval);
447 if (i != TOKEN_STR) {
448 nasm_error(ERR_NONFATAL,
449 "%s must be followed by a string constant",
451 eop->type = EOT_NOTHING;
453 eop->type = EOT_DB_STRING_FREE;
455 string_transform(tokval.t_charptr, tokval.t_inttwo,
456 &eop->stringval, func);
457 if (eop->stringlen == (size_t)-1) {
458 nasm_error(ERR_NONFATAL, "invalid string for transform");
459 eop->type = EOT_NOTHING;
462 if (parens && i && i != ')') {
463 i = stdscan(NULL, &tokval);
465 nasm_error(ERR_NONFATAL, "unterminated %s function",
470 i = stdscan(NULL, &tokval);
471 } else if (i == '-' || i == '+') {
472 char *save = stdscan_get();
474 sign = (i == '-') ? -1 : 1;
475 i = stdscan(NULL, &tokval);
476 if (i != TOKEN_FLOAT) {
478 i = tokval.t_type = token;
483 } else if (i == TOKEN_FLOAT) {
485 eop->type = EOT_DB_STRING;
486 result->eops_float = true;
488 eop->stringlen = idata_bytes(result->opcode);
489 if (eop->stringlen > 16) {
490 nasm_error(ERR_NONFATAL, "floating-point constant"
491 " encountered in DY or DZ instruction");
493 } else if (eop->stringlen < 1) {
494 nasm_error(ERR_NONFATAL, "floating-point constant"
495 " encountered in unknown instruction");
497 * fix suggested by Pedro Gimeno... original line was:
498 * eop->type = EOT_NOTHING;
503 eop = nasm_realloc(eop, sizeof(extop) + eop->stringlen);
506 eop->stringval = (char *)eop + sizeof(extop);
507 if (!eop->stringlen ||
508 !float_const(tokval.t_charptr, sign,
509 (uint8_t *)eop->stringval,
510 eop->stringlen, nasm_error))
511 eop->type = EOT_NOTHING;
512 i = stdscan(NULL, &tokval); /* eat the comma */
514 /* anything else, assume it is an expression */
518 value = evaluate(stdscan, NULL, &tokval, NULL,
519 critical, nasm_error, NULL);
521 if (!value) /* Error in evaluator */
523 if (is_unknown(value)) {
524 eop->type = EOT_DB_NUMBER;
525 eop->offset = 0; /* doesn't matter what we put */
526 eop->segment = eop->wrt = NO_SEG; /* likewise */
527 } else if (is_reloc(value)) {
528 eop->type = EOT_DB_NUMBER;
529 eop->offset = reloc_value(value);
530 eop->segment = reloc_seg(value);
531 eop->wrt = reloc_wrt(value);
533 nasm_error(ERR_NONFATAL,
534 "operand %d: expression is not simple"
535 " or relocatable", oper_num);
540 * We're about to call stdscan(), which will eat the
541 * comma that we're currently sitting on between
542 * arguments. However, we'd better check first that it
545 if (i == TOKEN_EOS) /* also could be EOL */
548 nasm_error(ERR_NONFATAL, "comma expected after operand %d",
554 if (result->opcode == I_INCBIN) {
556 * Correct syntax for INCBIN is that there should be
557 * one string operand, followed by one or two numeric
560 if (!result->eops || result->eops->type != EOT_DB_STRING)
561 nasm_error(ERR_NONFATAL, "`incbin' expects a file name");
562 else if (result->eops->next &&
563 result->eops->next->type != EOT_DB_NUMBER)
564 nasm_error(ERR_NONFATAL, "`incbin': second parameter is"
566 else if (result->eops->next && result->eops->next->next &&
567 result->eops->next->next->type != EOT_DB_NUMBER)
568 nasm_error(ERR_NONFATAL, "`incbin': third parameter is"
570 else if (result->eops->next && result->eops->next->next &&
571 result->eops->next->next->next)
572 nasm_error(ERR_NONFATAL,
573 "`incbin': more than three parameters");
577 * If we reach here, one of the above errors happened.
578 * Throw the instruction away.
581 } else /* DB ... */ if (oper_num == 0)
582 nasm_error(ERR_WARNING | ERR_PASS1,
583 "no operand for data declaration");
585 result->operands = oper_num;
591 * Now we begin to parse the operands. There may be up to four
592 * of these, separated by commas, and terminated by a zero token.
595 for (opnum = 0; opnum < MAX_OPERANDS; opnum++) {
596 operand *op = &result->oprs[opnum];
597 expr *value; /* used most of the time */
598 int mref; /* is this going to be a memory ref? */
599 int bracket; /* is it a [] mref, or a & mref? */
601 decoflags_t brace_flags = 0; /* flags for decorators in braces */
603 op->disp_size = 0; /* have to zero this whatever */
604 op->eaflags = 0; /* and this */
608 i = stdscan(NULL, &tokval);
610 break; /* end of operands: get out of here */
611 else if (first && i == ':') {
612 insn_is_label = true;
616 op->type = 0; /* so far, no override */
617 while (i == TOKEN_SPECIAL) { /* size specifiers */
618 switch ((int)tokval.t_integer) {
620 if (!setsize) /* we want to use only the first */
676 nasm_error(ERR_NONFATAL, "invalid operand size specification");
678 i = stdscan(NULL, &tokval);
681 if (i == '[' || i == '&') { /* memory reference */
683 bracket = (i == '[');
684 i = stdscan(NULL, &tokval); /* then skip the colon */
685 while (i == TOKEN_SPECIAL || i == TOKEN_PREFIX) {
686 process_size_override(result, op);
687 i = stdscan(NULL, &tokval);
689 } else { /* immediate operand, or register */
691 bracket = false; /* placate optimisers */
694 if ((op->type & FAR) && !mref &&
695 result->opcode != I_JMP && result->opcode != I_CALL) {
696 nasm_error(ERR_NONFATAL, "invalid use of FAR operand specifier");
699 value = evaluate(stdscan, NULL, &tokval,
701 critical, nasm_error, &hints);
703 if (op->opflags & OPFLAG_FORWARD) {
704 result->forw_ref = true;
706 if (!value) /* Error in evaluator */
708 if (i == ':' && mref) { /* it was seg:offset */
710 * Process the segment override.
712 if (value[1].type != 0 ||
714 !IS_SREG(value->type))
715 nasm_error(ERR_NONFATAL, "invalid segment override");
716 else if (result->prefixes[PPS_SEG])
717 nasm_error(ERR_NONFATAL,
718 "instruction has conflicting segment overrides");
720 result->prefixes[PPS_SEG] = value->type;
721 if (IS_FSGS(value->type))
722 op->eaflags |= EAF_FSGS;
725 i = stdscan(NULL, &tokval); /* then skip the colon */
726 while (i == TOKEN_SPECIAL || i == TOKEN_PREFIX) {
727 process_size_override(result, op);
728 i = stdscan(NULL, &tokval);
730 value = evaluate(stdscan, NULL, &tokval,
732 critical, nasm_error, &hints);
734 if (op->opflags & OPFLAG_FORWARD) {
735 result->forw_ref = true;
737 /* and get the offset */
738 if (!value) /* Error in evaluator */
743 if (mref && bracket) { /* find ] at the end */
745 nasm_error(ERR_NONFATAL, "parser: expecting ]");
747 } else { /* we got the required ] */
748 i = stdscan(NULL, &tokval);
749 if ((i == TOKEN_DECORATOR) || (i == TOKEN_OPMASK)) {
751 * according to AVX512 spec, broacast or opmask decorator
752 * is expected for memory reference operands
754 if (tokval.t_flag & TFLAG_BRDCAST) {
755 brace_flags |= GEN_BRDCAST(0);
756 i = stdscan(NULL, &tokval);
757 } else if (i == TOKEN_OPMASK) {
758 brace_flags |= VAL_OPMASK(nasm_regvals[tokval.t_integer]);
759 i = stdscan(NULL, &tokval);
761 nasm_error(ERR_NONFATAL, "broadcast or opmask "
762 "decorator expected inside braces");
767 if (i != 0 && i != ',') {
768 nasm_error(ERR_NONFATAL, "comma or end of line expected");
772 } else { /* immediate operand */
773 if (i != 0 && i != ',' && i != ':' &&
774 i != TOKEN_DECORATOR && i != TOKEN_OPMASK) {
775 nasm_error(ERR_NONFATAL, "comma, colon, decorator or end of "
776 "line expected after operand");
778 } else if (i == ':') {
780 } else if (i == TOKEN_DECORATOR || i == TOKEN_OPMASK) {
781 /* parse opmask (and zeroing) after an operand */
782 recover = parse_braces(&brace_flags);
786 do { /* error recovery */
787 i = stdscan(NULL, &tokval);
788 } while (i != 0 && i != ',');
792 * now convert the exprs returned from evaluate()
793 * into operand descriptions...
796 if (mref) { /* it's a memory reference */
798 int b, i, s; /* basereg, indexreg, scale */
799 int64_t o; /* offset */
801 b = i = -1, o = s = 0;
802 op->hintbase = hints.base;
803 op->hinttype = hints.type;
805 if (e->type && e->type <= EXPR_REG_END) { /* this bit's a register */
806 bool is_gpr = is_class(REG_GPR,nasm_reg_flags[e->type]);
808 if (is_gpr && e->value == 1)
809 b = e->type; /* It can be basereg */
810 else /* No, it has to be indexreg */
811 i = e->type, s = e->value;
814 if (e->type && e->type <= EXPR_REG_END) { /* it's a 2nd register */
815 bool is_gpr = is_class(REG_GPR,nasm_reg_flags[e->type]);
817 if (b != -1) /* If the first was the base, ... */
818 i = e->type, s = e->value; /* second has to be indexreg */
820 else if (!is_gpr || e->value != 1) {
821 /* If both want to be index */
822 nasm_error(ERR_NONFATAL,
823 "invalid effective address: two index registers");
829 if (e->type != 0) { /* is there an offset? */
830 if (e->type <= EXPR_REG_END) { /* in fact, is there an error? */
831 nasm_error(ERR_NONFATAL,
832 "beroset-p-603-invalid effective address");
835 if (e->type == EXPR_UNKNOWN) {
836 op->opflags |= OPFLAG_UNKNOWN;
837 o = 0; /* doesn't matter what */
838 op->wrt = NO_SEG; /* nor this */
839 op->segment = NO_SEG; /* or this */
841 e++; /* go to the end of the line */
843 if (e->type == EXPR_SIMPLE) {
847 if (e->type == EXPR_WRT) {
853 * Look for a segment base type.
855 if (e->type && e->type < EXPR_SEGBASE) {
856 nasm_error(ERR_NONFATAL,
857 "beroset-p-630-invalid effective address");
860 while (e->type && e->value == 0)
862 if (e->type && e->value != 1) {
863 nasm_error(ERR_NONFATAL,
864 "beroset-p-637-invalid effective address");
869 e->type - EXPR_SEGBASE;
872 op->segment = NO_SEG;
873 while (e->type && e->value == 0)
876 nasm_error(ERR_NONFATAL,
877 "beroset-p-650-invalid effective address");
885 op->segment = NO_SEG;
888 if (e->type != 0) { /* there'd better be nothing left! */
889 nasm_error(ERR_NONFATAL,
890 "beroset-p-663-invalid effective address");
894 /* It is memory, but it can match any r/m operand */
895 op->type |= MEMORY_ANY;
897 if (b == -1 && (i == -1 || s == 0)) {
898 int is_rel = globalbits == 64 &&
899 !(op->eaflags & EAF_ABS) &&
901 !(op->eaflags & EAF_FSGS)) ||
902 (op->eaflags & EAF_REL));
904 op->type |= is_rel ? IP_REL : MEM_OFFS;
908 opflags_t iclass = nasm_reg_flags[i];
910 if (is_class(XMMREG,iclass))
912 else if (is_class(YMMREG,iclass))
914 else if (is_class(ZMMREG,iclass))
922 op->decoflags |= brace_flags;
923 } else { /* it's not a memory reference */
924 if (is_just_unknown(value)) { /* it's immediate but unknown */
925 op->type |= IMMEDIATE;
926 op->opflags |= OPFLAG_UNKNOWN;
927 op->offset = 0; /* don't care */
928 op->segment = NO_SEG; /* don't care again */
929 op->wrt = NO_SEG; /* still don't care */
931 if(optimizing >= 0 && !(op->type & STRICT)) {
934 UNITY | SBYTEWORD | SBYTEDWORD | UDWORD | SDWORD;
936 } else if (is_reloc(value)) { /* it's immediate */
937 op->type |= IMMEDIATE;
938 op->offset = reloc_value(value);
939 op->segment = reloc_seg(value);
940 op->wrt = reloc_wrt(value);
942 if (is_simple(value)) {
943 uint64_t n = reloc_value(value);
946 if (optimizing >= 0 &&
947 !(op->type & STRICT)) {
948 if ((uint32_t) (n + 128) <= 255)
949 op->type |= SBYTEDWORD;
950 if ((uint16_t) (n + 128) <= 255)
951 op->type |= SBYTEWORD;
954 if (n + 0x80000000 <= 0xFFFFFFFF)
958 } else if(value->type == EXPR_RDSAE) {
960 * it's not an operand but a rounding or SAE decorator.
961 * put the decorator information in the (opflag_t) type field
962 * of previous operand.
965 switch (value->value) {
971 op->decoflags |= (value->value == BRC_SAE ? SAE : ER);
972 result->evex_rm = value->value;
975 nasm_error(ERR_NONFATAL, "invalid decorator");
978 } else { /* it's a register */
981 if (value->type >= EXPR_SIMPLE || value->value != 1) {
982 nasm_error(ERR_NONFATAL, "invalid operand type");
987 * check that its only 1 register, not an expression...
989 for (i = 1; value[i].type; i++)
990 if (value[i].value) {
991 nasm_error(ERR_NONFATAL, "invalid operand type");
995 /* clear overrides, except TO which applies to FPU regs */
996 if (op->type & ~TO) {
998 * we want to produce a warning iff the specified size
999 * is different from the register size
1001 rs = op->type & SIZE_MASK;
1006 op->type |= REGISTER;
1007 op->type |= nasm_reg_flags[value->type];
1008 op->decoflags |= brace_flags;
1009 op->basereg = value->type;
1011 if (rs && (op->type & SIZE_MASK) != rs)
1012 nasm_error(ERR_WARNING | ERR_PASS1,
1013 "register size specification ignored");
1017 /* remember the position of operand having broadcasting/ER mode */
1018 if (op->decoflags & (BRDCAST_MASK | ER | SAE))
1019 result->evex_brerop = opnum;
1022 result->operands = opnum; /* set operand count */
1024 /* clear remaining operands */
1025 while (opnum < MAX_OPERANDS)
1026 result->oprs[opnum++].type = 0;
1029 * Transform RESW, RESD, RESQ, REST, RESO, RESY, RESZ into RESB.
1031 switch (result->opcode) {
1033 result->opcode = I_RESB;
1034 result->oprs[0].offset *= 2;
1037 result->opcode = I_RESB;
1038 result->oprs[0].offset *= 4;
1041 result->opcode = I_RESB;
1042 result->oprs[0].offset *= 8;
1045 result->opcode = I_RESB;
1046 result->oprs[0].offset *= 10;
1049 result->opcode = I_RESB;
1050 result->oprs[0].offset *= 16;
1053 result->opcode = I_RESB;
1054 result->oprs[0].offset *= 32;
1057 result->opcode = I_RESB;
1058 result->oprs[0].offset *= 64;
1067 result->opcode = I_none;
1071 static int is_comma_next(void)
1078 i = stdscan(NULL, &tv);
1081 return (i == ',' || i == ';' || !i);
1084 void cleanup_insn(insn * i)
1088 while ((e = i->eops)) {
1090 if (e->type == EOT_DB_STRING_FREE)
1091 nasm_free(e->stringval);