1 /* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */
2 /* Assembler interface for targets using CGEN. -*- C -*-
3 CGEN: Cpu tools GENerator
5 THIS FILE IS MACHINE GENERATED WITH CGEN.
6 - the resultant file is machine generated, cgen-asm.in isn't
8 Copyright (C) 1996-2018 Free Software Foundation, Inc.
10 This file is part of libopcodes.
12 This library is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3, or (at your option)
17 It is distributed in the hope that it will be useful, but WITHOUT
18 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
19 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
20 License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software Foundation, Inc.,
24 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
27 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
35 #include "m32r-desc.h"
39 #include "libiberty.h"
40 #include "safe-ctype.h"
43 #define min(a,b) ((a) < (b) ? (a) : (b))
45 #define max(a,b) ((a) > (b) ? (a) : (b))
47 static const char * parse_insn_normal
48 (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
50 /* -- assembler routines inserted here. */
53 static const char * MISSING_CLOSING_PARENTHESIS = N_("missing `)'");
55 /* Handle '#' prefixes (i.e. skip over them). */
58 parse_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
60 int opindex ATTRIBUTE_UNUSED,
61 long *valuep ATTRIBUTE_UNUSED)
68 /* Handle shigh(), high(). */
71 parse_hi16 (CGEN_CPU_DESC cd,
74 unsigned long *valuep)
77 enum cgen_parse_operand_result result_type;
83 if (strncasecmp (*strp, "high(", 5) == 0)
86 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_HI16_ULO,
87 & result_type, & value);
89 return MISSING_CLOSING_PARENTHESIS;
92 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
100 else if (strncasecmp (*strp, "shigh(", 6) == 0)
103 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_HI16_SLO,
104 & result_type, & value);
106 return MISSING_CLOSING_PARENTHESIS;
109 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
119 return cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
122 /* Handle low() in a signed context. Also handle sda().
123 The signedness of the value doesn't matter to low(), but this also
124 handles the case where low() isn't present. */
127 parse_slo16 (CGEN_CPU_DESC cd,
133 enum cgen_parse_operand_result result_type;
139 if (strncasecmp (*strp, "low(", 4) == 0)
142 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_LO16,
143 & result_type, & value);
145 return MISSING_CLOSING_PARENTHESIS;
148 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
149 value = ((value & 0xffff) ^ 0x8000) - 0x8000;
154 if (strncasecmp (*strp, "sda(", 4) == 0)
157 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_SDA16,
160 return MISSING_CLOSING_PARENTHESIS;
166 return cgen_parse_signed_integer (cd, strp, opindex, valuep);
169 /* Handle low() in an unsigned context.
170 The signedness of the value doesn't matter to low(), but this also
171 handles the case where low() isn't present. */
174 parse_ulo16 (CGEN_CPU_DESC cd,
177 unsigned long *valuep)
180 enum cgen_parse_operand_result result_type;
186 if (strncasecmp (*strp, "low(", 4) == 0)
189 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_LO16,
190 & result_type, & value);
192 return MISSING_CLOSING_PARENTHESIS;
195 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
201 return cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
206 const char * m32r_cgen_parse_operand
207 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
209 /* Main entry point for operand parsing.
211 This function is basically just a big switch statement. Earlier versions
212 used tables to look up the function to use, but
213 - if the table contains both assembler and disassembler functions then
214 the disassembler contains much of the assembler and vice-versa,
215 - there's a lot of inlining possibilities as things grow,
216 - using a switch statement avoids the function call overhead.
218 This function could be moved into `parse_insn_normal', but keeping it
219 separate makes clear the interface between `parse_insn_normal' and each of
223 m32r_cgen_parse_operand (CGEN_CPU_DESC cd,
226 CGEN_FIELDS * fields)
228 const char * errmsg = NULL;
229 /* Used by scalar operands that still need to be parsed. */
230 long junk ATTRIBUTE_UNUSED;
234 case M32R_OPERAND_ACC :
235 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_h_accums, & fields->f_acc);
237 case M32R_OPERAND_ACCD :
238 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_h_accums, & fields->f_accd);
240 case M32R_OPERAND_ACCS :
241 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_h_accums, & fields->f_accs);
243 case M32R_OPERAND_DCR :
244 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_cr_names, & fields->f_r1);
246 case M32R_OPERAND_DISP16 :
249 errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_DISP16, 0, NULL, & value);
250 fields->f_disp16 = value;
253 case M32R_OPERAND_DISP24 :
256 errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_DISP24, 0, NULL, & value);
257 fields->f_disp24 = value;
260 case M32R_OPERAND_DISP8 :
263 errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_DISP8, 0, NULL, & value);
264 fields->f_disp8 = value;
267 case M32R_OPERAND_DR :
268 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r1);
270 case M32R_OPERAND_HASH :
271 errmsg = parse_hash (cd, strp, M32R_OPERAND_HASH, (long *) (& junk));
273 case M32R_OPERAND_HI16 :
274 errmsg = parse_hi16 (cd, strp, M32R_OPERAND_HI16, (unsigned long *) (& fields->f_hi16));
276 case M32R_OPERAND_IMM1 :
277 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_IMM1, (unsigned long *) (& fields->f_imm1));
279 case M32R_OPERAND_SCR :
280 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_cr_names, & fields->f_r2);
282 case M32R_OPERAND_SIMM16 :
283 errmsg = cgen_parse_signed_integer (cd, strp, M32R_OPERAND_SIMM16, (long *) (& fields->f_simm16));
285 case M32R_OPERAND_SIMM8 :
286 errmsg = cgen_parse_signed_integer (cd, strp, M32R_OPERAND_SIMM8, (long *) (& fields->f_simm8));
288 case M32R_OPERAND_SLO16 :
289 errmsg = parse_slo16 (cd, strp, M32R_OPERAND_SLO16, (long *) (& fields->f_simm16));
291 case M32R_OPERAND_SR :
292 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r2);
294 case M32R_OPERAND_SRC1 :
295 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r1);
297 case M32R_OPERAND_SRC2 :
298 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r2);
300 case M32R_OPERAND_UIMM16 :
301 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM16, (unsigned long *) (& fields->f_uimm16));
303 case M32R_OPERAND_UIMM24 :
306 errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_UIMM24, 0, NULL, & value);
307 fields->f_uimm24 = value;
310 case M32R_OPERAND_UIMM3 :
311 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM3, (unsigned long *) (& fields->f_uimm3));
313 case M32R_OPERAND_UIMM4 :
314 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM4, (unsigned long *) (& fields->f_uimm4));
316 case M32R_OPERAND_UIMM5 :
317 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM5, (unsigned long *) (& fields->f_uimm5));
319 case M32R_OPERAND_UIMM8 :
320 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM8, (unsigned long *) (& fields->f_uimm8));
322 case M32R_OPERAND_ULO16 :
323 errmsg = parse_ulo16 (cd, strp, M32R_OPERAND_ULO16, (unsigned long *) (& fields->f_uimm16));
327 /* xgettext:c-format */
328 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
335 cgen_parse_fn * const m32r_cgen_parse_handlers[] =
341 m32r_cgen_init_asm (CGEN_CPU_DESC cd)
343 m32r_cgen_init_opcode_table (cd);
344 m32r_cgen_init_ibld_table (cd);
345 cd->parse_handlers = & m32r_cgen_parse_handlers[0];
346 cd->parse_operand = m32r_cgen_parse_operand;
347 #ifdef CGEN_ASM_INIT_HOOK
354 /* Regex construction routine.
356 This translates an opcode syntax string into a regex string,
357 by replacing any non-character syntax element (such as an
358 opcode) with the pattern '.*'
360 It then compiles the regex and stores it in the opcode, for
361 later use by m32r_cgen_assemble_insn
363 Returns NULL for success, an error message for failure. */
366 m32r_cgen_build_insn_regex (CGEN_INSN *insn)
368 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
369 const char *mnem = CGEN_INSN_MNEMONIC (insn);
370 char rxbuf[CGEN_MAX_RX_ELEMENTS];
372 const CGEN_SYNTAX_CHAR_TYPE *syn;
375 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
377 /* Mnemonics come first in the syntax string. */
378 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
379 return _("missing mnemonic in syntax string");
382 /* Generate a case sensitive regular expression that emulates case
383 insensitive matching in the "C" locale. We cannot generate a case
384 insensitive regular expression because in Turkish locales, 'i' and 'I'
385 are not equal modulo case conversion. */
387 /* Copy the literal mnemonic out of the insn. */
388 for (; *mnem; mnem++)
403 /* Copy any remaining literals from the syntax string into the rx. */
404 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
406 if (CGEN_SYNTAX_CHAR_P (* syn))
408 char c = CGEN_SYNTAX_CHAR (* syn);
412 /* Escape any regex metacharacters in the syntax. */
413 case '.': case '[': case '\\':
414 case '*': case '^': case '$':
416 #ifdef CGEN_ESCAPE_EXTENDED_REGEX
417 case '?': case '{': case '}':
418 case '(': case ')': case '*':
419 case '|': case '+': case ']':
440 /* Replace non-syntax fields with globs. */
446 /* Trailing whitespace ok. */
453 /* But anchor it after that. */
457 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
458 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
466 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
467 regfree ((regex_t *) CGEN_INSN_RX (insn));
468 free (CGEN_INSN_RX (insn));
469 (CGEN_INSN_RX (insn)) = NULL;
475 /* Default insn parser.
477 The syntax string is scanned and operands are parsed and stored in FIELDS.
478 Relocs are queued as we go via other callbacks.
480 ??? Note that this is currently an all-or-nothing parser. If we fail to
481 parse the instruction, we return 0 and the caller will start over from
482 the beginning. Backtracking will be necessary in parsing subexpressions,
483 but that can be handled there. Not handling backtracking here may get
484 expensive in the case of the m68k. Deal with later.
486 Returns NULL for success, an error message for failure. */
489 parse_insn_normal (CGEN_CPU_DESC cd,
490 const CGEN_INSN *insn,
494 /* ??? Runtime added insns not handled yet. */
495 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
496 const char *str = *strp;
499 const CGEN_SYNTAX_CHAR_TYPE * syn;
500 #ifdef CGEN_MNEMONIC_OPERANDS
505 /* For now we assume the mnemonic is first (there are no leading operands).
506 We can parse it without needing to set up operand parsing.
507 GAS's input scrubber will ensure mnemonics are lowercase, but we may
508 not be called from GAS. */
509 p = CGEN_INSN_MNEMONIC (insn);
510 while (*p && TOLOWER (*p) == TOLOWER (*str))
514 return _("unrecognized instruction");
516 #ifndef CGEN_MNEMONIC_OPERANDS
517 if (* str && ! ISSPACE (* str))
518 return _("unrecognized instruction");
521 CGEN_INIT_PARSE (cd);
522 cgen_init_parse_operand (cd);
523 #ifdef CGEN_MNEMONIC_OPERANDS
527 /* We don't check for (*str != '\0') here because we want to parse
528 any trailing fake arguments in the syntax string. */
529 syn = CGEN_SYNTAX_STRING (syntax);
531 /* Mnemonics come first for now, ensure valid string. */
532 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
539 /* Non operand chars must match exactly. */
540 if (CGEN_SYNTAX_CHAR_P (* syn))
542 /* FIXME: While we allow for non-GAS callers above, we assume the
543 first char after the mnemonic part is a space. */
544 /* FIXME: We also take inappropriate advantage of the fact that
545 GAS's input scrubber will remove extraneous blanks. */
546 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
548 #ifdef CGEN_MNEMONIC_OPERANDS
549 if (CGEN_SYNTAX_CHAR(* syn) == ' ')
557 /* Syntax char didn't match. Can't be this insn. */
558 static char msg [80];
560 /* xgettext:c-format */
561 sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
562 CGEN_SYNTAX_CHAR(*syn), *str);
567 /* Ran out of input. */
568 static char msg [80];
570 /* xgettext:c-format */
571 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
572 CGEN_SYNTAX_CHAR(*syn));
578 #ifdef CGEN_MNEMONIC_OPERANDS
579 (void) past_opcode_p;
581 /* We have an operand of some sort. */
582 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields);
586 /* Done with this operand, continue with next one. */
590 /* If we're at the end of the syntax string, we're done. */
593 /* FIXME: For the moment we assume a valid `str' can only contain
594 blanks now. IE: We needn't try again with a longer version of
595 the insn and it is assumed that longer versions of insns appear
596 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
597 while (ISSPACE (* str))
601 return _("junk at end of line"); /* FIXME: would like to include `str' */
606 /* We couldn't parse it. */
607 return _("unrecognized instruction");
611 This routine is called for each instruction to be assembled.
612 STR points to the insn to be assembled.
613 We assume all necessary tables have been initialized.
614 The assembled instruction, less any fixups, is stored in BUF.
615 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
616 still needs to be converted to target byte order, otherwise BUF is an array
617 of bytes in target byte order.
618 The result is a pointer to the insn's entry in the opcode table,
619 or NULL if an error occured (an error message will have already been
622 Note that when processing (non-alias) macro-insns,
623 this function recurses.
625 ??? It's possible to make this cpu-independent.
626 One would have to deal with a few minor things.
627 At this point in time doing so would be more of a curiosity than useful
628 [for example this file isn't _that_ big], but keeping the possibility in
629 mind helps keep the design clean. */
632 m32r_cgen_assemble_insn (CGEN_CPU_DESC cd,
635 CGEN_INSN_BYTES_PTR buf,
639 CGEN_INSN_LIST *ilist;
640 const char *parse_errmsg = NULL;
641 const char *insert_errmsg = NULL;
642 int recognized_mnemonic = 0;
644 /* Skip leading white space. */
645 while (ISSPACE (* str))
648 /* The instructions are stored in hashed lists.
649 Get the first in the list. */
650 ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
652 /* Keep looking until we find a match. */
654 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
656 const CGEN_INSN *insn = ilist->insn;
657 recognized_mnemonic = 1;
659 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
660 /* Not usually needed as unsupported opcodes
661 shouldn't be in the hash lists. */
662 /* Is this insn supported by the selected cpu? */
663 if (! m32r_cgen_insn_supported (cd, insn))
666 /* If the RELAXED attribute is set, this is an insn that shouldn't be
667 chosen immediately. Instead, it is used during assembler/linker
668 relaxation if possible. */
669 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
674 /* Skip this insn if str doesn't look right lexically. */
675 if (CGEN_INSN_RX (insn) != NULL &&
676 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
679 /* Allow parse/insert handlers to obtain length of insn. */
680 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
682 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
683 if (parse_errmsg != NULL)
686 /* ??? 0 is passed for `pc'. */
687 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
689 if (insert_errmsg != NULL)
692 /* It is up to the caller to actually output the insn and any
698 static char errbuf[150];
699 const char *tmp_errmsg;
700 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
708 /* If requesting verbose error messages, use insert_errmsg.
709 Failing that, use parse_errmsg. */
710 tmp_errmsg = (insert_errmsg ? insert_errmsg :
711 parse_errmsg ? parse_errmsg :
712 recognized_mnemonic ?
713 _("unrecognized form of instruction") :
714 _("unrecognized instruction"));
716 if (strlen (start) > 50)
717 /* xgettext:c-format */
718 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
720 /* xgettext:c-format */
721 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
725 if (strlen (start) > 50)
726 /* xgettext:c-format */
727 sprintf (errbuf, _("bad instruction `%.50s...'"), start);
729 /* xgettext:c-format */
730 sprintf (errbuf, _("bad instruction `%.50s'"), start);