1 /* Assembler interface for targets using CGEN. -*- C -*-
2 CGEN: Cpu tools GENerator
4 THIS FILE IS MACHINE GENERATED WITH CGEN.
5 - the resultant file is machine generated, cgen-asm.in isn't
7 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005
8 Free Software Foundation, Inc.
10 This file is part of the GNU Binutils and GDB, the GNU debugger.
12 This program 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 2, or (at your option)
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public 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. */
26 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
34 #include "m32r-desc.h"
38 #include "libiberty.h"
39 #include "safe-ctype.h"
42 #define min(a,b) ((a) < (b) ? (a) : (b))
44 #define max(a,b) ((a) > (b) ? (a) : (b))
46 static const char * parse_insn_normal
47 (CGEN_CPU_DESC
, const CGEN_INSN
*, const char **, CGEN_FIELDS
*);
49 /* -- 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
)
97 else if (strncasecmp (*strp
, "shigh(", 6) == 0)
100 errmsg
= cgen_parse_address (cd
, strp
, opindex
, BFD_RELOC_M32R_HI16_SLO
,
101 & result_type
, & value
);
103 return MISSING_CLOSING_PARENTHESIS
;
106 && result_type
== CGEN_PARSE_OPERAND_RESULT_NUMBER
)
108 value
= value
+ (value
& 0x8000 ? 0x10000 : 0);
115 return cgen_parse_unsigned_integer (cd
, strp
, opindex
, valuep
);
118 /* Handle low() in a signed context. Also handle sda().
119 The signedness of the value doesn't matter to low(), but this also
120 handles the case where low() isn't present. */
123 parse_slo16 (CGEN_CPU_DESC cd
, const char ** strp
, int opindex
, long * valuep
)
126 enum cgen_parse_operand_result result_type
;
132 if (strncasecmp (*strp
, "low(", 4) == 0)
135 errmsg
= cgen_parse_address (cd
, strp
, opindex
, BFD_RELOC_M32R_LO16
,
136 & result_type
, & value
);
138 return MISSING_CLOSING_PARENTHESIS
;
141 && result_type
== CGEN_PARSE_OPERAND_RESULT_NUMBER
)
151 if (strncasecmp (*strp
, "sda(", 4) == 0)
154 errmsg
= cgen_parse_address (cd
, strp
, opindex
, BFD_RELOC_M32R_SDA16
,
157 return MISSING_CLOSING_PARENTHESIS
;
163 return cgen_parse_signed_integer (cd
, strp
, opindex
, valuep
);
166 /* Handle low() in an unsigned context.
167 The signedness of the value doesn't matter to low(), but this also
168 handles the case where low() isn't present. */
171 parse_ulo16 (CGEN_CPU_DESC cd
,
174 unsigned long *valuep
)
177 enum cgen_parse_operand_result result_type
;
183 if (strncasecmp (*strp
, "low(", 4) == 0)
186 errmsg
= cgen_parse_address (cd
, strp
, opindex
, BFD_RELOC_M32R_LO16
,
187 & result_type
, & value
);
189 return MISSING_CLOSING_PARENTHESIS
;
192 && result_type
== CGEN_PARSE_OPERAND_RESULT_NUMBER
)
198 return cgen_parse_unsigned_integer (cd
, strp
, opindex
, valuep
);
203 const char * m32r_cgen_parse_operand
204 (CGEN_CPU_DESC
, int, const char **, CGEN_FIELDS
*);
206 /* Main entry point for operand parsing.
208 This function is basically just a big switch statement. Earlier versions
209 used tables to look up the function to use, but
210 - if the table contains both assembler and disassembler functions then
211 the disassembler contains much of the assembler and vice-versa,
212 - there's a lot of inlining possibilities as things grow,
213 - using a switch statement avoids the function call overhead.
215 This function could be moved into `parse_insn_normal', but keeping it
216 separate makes clear the interface between `parse_insn_normal' and each of
220 m32r_cgen_parse_operand (CGEN_CPU_DESC cd
,
223 CGEN_FIELDS
* fields
)
225 const char * errmsg
= NULL
;
226 /* Used by scalar operands that still need to be parsed. */
227 long junk ATTRIBUTE_UNUSED
;
231 case M32R_OPERAND_ACC
:
232 errmsg
= cgen_parse_keyword (cd
, strp
, & m32r_cgen_opval_h_accums
, & fields
->f_acc
);
234 case M32R_OPERAND_ACCD
:
235 errmsg
= cgen_parse_keyword (cd
, strp
, & m32r_cgen_opval_h_accums
, & fields
->f_accd
);
237 case M32R_OPERAND_ACCS
:
238 errmsg
= cgen_parse_keyword (cd
, strp
, & m32r_cgen_opval_h_accums
, & fields
->f_accs
);
240 case M32R_OPERAND_DCR
:
241 errmsg
= cgen_parse_keyword (cd
, strp
, & m32r_cgen_opval_cr_names
, & fields
->f_r1
);
243 case M32R_OPERAND_DISP16
:
246 errmsg
= cgen_parse_address (cd
, strp
, M32R_OPERAND_DISP16
, 0, NULL
, & value
);
247 fields
->f_disp16
= value
;
250 case M32R_OPERAND_DISP24
:
253 errmsg
= cgen_parse_address (cd
, strp
, M32R_OPERAND_DISP24
, 0, NULL
, & value
);
254 fields
->f_disp24
= value
;
257 case M32R_OPERAND_DISP8
:
260 errmsg
= cgen_parse_address (cd
, strp
, M32R_OPERAND_DISP8
, 0, NULL
, & value
);
261 fields
->f_disp8
= value
;
264 case M32R_OPERAND_DR
:
265 errmsg
= cgen_parse_keyword (cd
, strp
, & m32r_cgen_opval_gr_names
, & fields
->f_r1
);
267 case M32R_OPERAND_HASH
:
268 errmsg
= parse_hash (cd
, strp
, M32R_OPERAND_HASH
, (long *) (& junk
));
270 case M32R_OPERAND_HI16
:
271 errmsg
= parse_hi16 (cd
, strp
, M32R_OPERAND_HI16
, (unsigned long *) (& fields
->f_hi16
));
273 case M32R_OPERAND_IMM1
:
274 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, M32R_OPERAND_IMM1
, (unsigned long *) (& fields
->f_imm1
));
276 case M32R_OPERAND_SCR
:
277 errmsg
= cgen_parse_keyword (cd
, strp
, & m32r_cgen_opval_cr_names
, & fields
->f_r2
);
279 case M32R_OPERAND_SIMM16
:
280 errmsg
= cgen_parse_signed_integer (cd
, strp
, M32R_OPERAND_SIMM16
, (long *) (& fields
->f_simm16
));
282 case M32R_OPERAND_SIMM8
:
283 errmsg
= cgen_parse_signed_integer (cd
, strp
, M32R_OPERAND_SIMM8
, (long *) (& fields
->f_simm8
));
285 case M32R_OPERAND_SLO16
:
286 errmsg
= parse_slo16 (cd
, strp
, M32R_OPERAND_SLO16
, (long *) (& fields
->f_simm16
));
288 case M32R_OPERAND_SR
:
289 errmsg
= cgen_parse_keyword (cd
, strp
, & m32r_cgen_opval_gr_names
, & fields
->f_r2
);
291 case M32R_OPERAND_SRC1
:
292 errmsg
= cgen_parse_keyword (cd
, strp
, & m32r_cgen_opval_gr_names
, & fields
->f_r1
);
294 case M32R_OPERAND_SRC2
:
295 errmsg
= cgen_parse_keyword (cd
, strp
, & m32r_cgen_opval_gr_names
, & fields
->f_r2
);
297 case M32R_OPERAND_UIMM16
:
298 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, M32R_OPERAND_UIMM16
, (unsigned long *) (& fields
->f_uimm16
));
300 case M32R_OPERAND_UIMM24
:
303 errmsg
= cgen_parse_address (cd
, strp
, M32R_OPERAND_UIMM24
, 0, NULL
, & value
);
304 fields
->f_uimm24
= value
;
307 case M32R_OPERAND_UIMM3
:
308 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, M32R_OPERAND_UIMM3
, (unsigned long *) (& fields
->f_uimm3
));
310 case M32R_OPERAND_UIMM4
:
311 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, M32R_OPERAND_UIMM4
, (unsigned long *) (& fields
->f_uimm4
));
313 case M32R_OPERAND_UIMM5
:
314 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, M32R_OPERAND_UIMM5
, (unsigned long *) (& fields
->f_uimm5
));
316 case M32R_OPERAND_UIMM8
:
317 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, M32R_OPERAND_UIMM8
, (unsigned long *) (& fields
->f_uimm8
));
319 case M32R_OPERAND_ULO16
:
320 errmsg
= parse_ulo16 (cd
, strp
, M32R_OPERAND_ULO16
, (unsigned long *) (& fields
->f_uimm16
));
324 /* xgettext:c-format */
325 fprintf (stderr
, _("Unrecognized field %d while parsing.\n"), opindex
);
332 cgen_parse_fn
* const m32r_cgen_parse_handlers
[] =
338 m32r_cgen_init_asm (CGEN_CPU_DESC cd
)
340 m32r_cgen_init_opcode_table (cd
);
341 m32r_cgen_init_ibld_table (cd
);
342 cd
->parse_handlers
= & m32r_cgen_parse_handlers
[0];
343 cd
->parse_operand
= m32r_cgen_parse_operand
;
348 /* Regex construction routine.
350 This translates an opcode syntax string into a regex string,
351 by replacing any non-character syntax element (such as an
352 opcode) with the pattern '.*'
354 It then compiles the regex and stores it in the opcode, for
355 later use by m32r_cgen_assemble_insn
357 Returns NULL for success, an error message for failure. */
360 m32r_cgen_build_insn_regex (CGEN_INSN
*insn
)
362 CGEN_OPCODE
*opc
= (CGEN_OPCODE
*) CGEN_INSN_OPCODE (insn
);
363 const char *mnem
= CGEN_INSN_MNEMONIC (insn
);
364 char rxbuf
[CGEN_MAX_RX_ELEMENTS
];
366 const CGEN_SYNTAX_CHAR_TYPE
*syn
;
369 syn
= CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc
));
371 /* Mnemonics come first in the syntax string. */
372 if (! CGEN_SYNTAX_MNEMONIC_P (* syn
))
373 return _("missing mnemonic in syntax string");
376 /* Generate a case sensitive regular expression that emulates case
377 insensitive matching in the "C" locale. We cannot generate a case
378 insensitive regular expression because in Turkish locales, 'i' and 'I'
379 are not equal modulo case conversion. */
381 /* Copy the literal mnemonic out of the insn. */
382 for (; *mnem
; mnem
++)
397 /* Copy any remaining literals from the syntax string into the rx. */
398 for(; * syn
!= 0 && rx
<= rxbuf
+ (CGEN_MAX_RX_ELEMENTS
- 7 - 4); ++syn
)
400 if (CGEN_SYNTAX_CHAR_P (* syn
))
402 char c
= CGEN_SYNTAX_CHAR (* syn
);
406 /* Escape any regex metacharacters in the syntax. */
407 case '.': case '[': case '\\':
408 case '*': case '^': case '$':
410 #ifdef CGEN_ESCAPE_EXTENDED_REGEX
411 case '?': case '{': case '}':
412 case '(': case ')': case '*':
413 case '|': case '+': case ']':
434 /* Replace non-syntax fields with globs. */
440 /* Trailing whitespace ok. */
447 /* But anchor it after that. */
451 CGEN_INSN_RX (insn
) = xmalloc (sizeof (regex_t
));
452 reg_err
= regcomp ((regex_t
*) CGEN_INSN_RX (insn
), rxbuf
, REG_NOSUB
);
460 regerror (reg_err
, (regex_t
*) CGEN_INSN_RX (insn
), msg
, 80);
461 regfree ((regex_t
*) CGEN_INSN_RX (insn
));
462 free (CGEN_INSN_RX (insn
));
463 (CGEN_INSN_RX (insn
)) = NULL
;
469 /* Default insn parser.
471 The syntax string is scanned and operands are parsed and stored in FIELDS.
472 Relocs are queued as we go via other callbacks.
474 ??? Note that this is currently an all-or-nothing parser. If we fail to
475 parse the instruction, we return 0 and the caller will start over from
476 the beginning. Backtracking will be necessary in parsing subexpressions,
477 but that can be handled there. Not handling backtracking here may get
478 expensive in the case of the m68k. Deal with later.
480 Returns NULL for success, an error message for failure. */
483 parse_insn_normal (CGEN_CPU_DESC cd
,
484 const CGEN_INSN
*insn
,
488 /* ??? Runtime added insns not handled yet. */
489 const CGEN_SYNTAX
*syntax
= CGEN_INSN_SYNTAX (insn
);
490 const char *str
= *strp
;
493 const CGEN_SYNTAX_CHAR_TYPE
* syn
;
494 #ifdef CGEN_MNEMONIC_OPERANDS
499 /* For now we assume the mnemonic is first (there are no leading operands).
500 We can parse it without needing to set up operand parsing.
501 GAS's input scrubber will ensure mnemonics are lowercase, but we may
502 not be called from GAS. */
503 p
= CGEN_INSN_MNEMONIC (insn
);
504 while (*p
&& TOLOWER (*p
) == TOLOWER (*str
))
508 return _("unrecognized instruction");
510 #ifndef CGEN_MNEMONIC_OPERANDS
511 if (* str
&& ! ISSPACE (* str
))
512 return _("unrecognized instruction");
515 CGEN_INIT_PARSE (cd
);
516 cgen_init_parse_operand (cd
);
517 #ifdef CGEN_MNEMONIC_OPERANDS
521 /* We don't check for (*str != '\0') here because we want to parse
522 any trailing fake arguments in the syntax string. */
523 syn
= CGEN_SYNTAX_STRING (syntax
);
525 /* Mnemonics come first for now, ensure valid string. */
526 if (! CGEN_SYNTAX_MNEMONIC_P (* syn
))
533 /* Non operand chars must match exactly. */
534 if (CGEN_SYNTAX_CHAR_P (* syn
))
536 /* FIXME: While we allow for non-GAS callers above, we assume the
537 first char after the mnemonic part is a space. */
538 /* FIXME: We also take inappropriate advantage of the fact that
539 GAS's input scrubber will remove extraneous blanks. */
540 if (TOLOWER (*str
) == TOLOWER (CGEN_SYNTAX_CHAR (* syn
)))
542 #ifdef CGEN_MNEMONIC_OPERANDS
543 if (CGEN_SYNTAX_CHAR(* syn
) == ' ')
551 /* Syntax char didn't match. Can't be this insn. */
552 static char msg
[80];
554 /* xgettext:c-format */
555 sprintf (msg
, _("syntax error (expected char `%c', found `%c')"),
556 CGEN_SYNTAX_CHAR(*syn
), *str
);
561 /* Ran out of input. */
562 static char msg
[80];
564 /* xgettext:c-format */
565 sprintf (msg
, _("syntax error (expected char `%c', found end of instruction)"),
566 CGEN_SYNTAX_CHAR(*syn
));
572 /* We have an operand of some sort. */
573 errmsg
= cd
->parse_operand (cd
, CGEN_SYNTAX_FIELD (*syn
),
578 /* Done with this operand, continue with next one. */
582 /* If we're at the end of the syntax string, we're done. */
585 /* FIXME: For the moment we assume a valid `str' can only contain
586 blanks now. IE: We needn't try again with a longer version of
587 the insn and it is assumed that longer versions of insns appear
588 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
589 while (ISSPACE (* str
))
593 return _("junk at end of line"); /* FIXME: would like to include `str' */
598 /* We couldn't parse it. */
599 return _("unrecognized instruction");
603 This routine is called for each instruction to be assembled.
604 STR points to the insn to be assembled.
605 We assume all necessary tables have been initialized.
606 The assembled instruction, less any fixups, is stored in BUF.
607 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
608 still needs to be converted to target byte order, otherwise BUF is an array
609 of bytes in target byte order.
610 The result is a pointer to the insn's entry in the opcode table,
611 or NULL if an error occured (an error message will have already been
614 Note that when processing (non-alias) macro-insns,
615 this function recurses.
617 ??? It's possible to make this cpu-independent.
618 One would have to deal with a few minor things.
619 At this point in time doing so would be more of a curiosity than useful
620 [for example this file isn't _that_ big], but keeping the possibility in
621 mind helps keep the design clean. */
624 m32r_cgen_assemble_insn (CGEN_CPU_DESC cd
,
627 CGEN_INSN_BYTES_PTR buf
,
631 CGEN_INSN_LIST
*ilist
;
632 const char *parse_errmsg
= NULL
;
633 const char *insert_errmsg
= NULL
;
634 int recognized_mnemonic
= 0;
636 /* Skip leading white space. */
637 while (ISSPACE (* str
))
640 /* The instructions are stored in hashed lists.
641 Get the first in the list. */
642 ilist
= CGEN_ASM_LOOKUP_INSN (cd
, str
);
644 /* Keep looking until we find a match. */
646 for ( ; ilist
!= NULL
; ilist
= CGEN_ASM_NEXT_INSN (ilist
))
648 const CGEN_INSN
*insn
= ilist
->insn
;
649 recognized_mnemonic
= 1;
651 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
652 /* Not usually needed as unsupported opcodes
653 shouldn't be in the hash lists. */
654 /* Is this insn supported by the selected cpu? */
655 if (! m32r_cgen_insn_supported (cd
, insn
))
658 /* If the RELAXED attribute is set, this is an insn that shouldn't be
659 chosen immediately. Instead, it is used during assembler/linker
660 relaxation if possible. */
661 if (CGEN_INSN_ATTR_VALUE (insn
, CGEN_INSN_RELAXED
) != 0)
666 /* Skip this insn if str doesn't look right lexically. */
667 if (CGEN_INSN_RX (insn
) != NULL
&&
668 regexec ((regex_t
*) CGEN_INSN_RX (insn
), str
, 0, NULL
, 0) == REG_NOMATCH
)
671 /* Allow parse/insert handlers to obtain length of insn. */
672 CGEN_FIELDS_BITSIZE (fields
) = CGEN_INSN_BITSIZE (insn
);
674 parse_errmsg
= CGEN_PARSE_FN (cd
, insn
) (cd
, insn
, & str
, fields
);
675 if (parse_errmsg
!= NULL
)
678 /* ??? 0 is passed for `pc'. */
679 insert_errmsg
= CGEN_INSERT_FN (cd
, insn
) (cd
, insn
, fields
, buf
,
681 if (insert_errmsg
!= NULL
)
684 /* It is up to the caller to actually output the insn and any
690 static char errbuf
[150];
691 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
692 const char *tmp_errmsg
;
694 /* If requesting verbose error messages, use insert_errmsg.
695 Failing that, use parse_errmsg. */
696 tmp_errmsg
= (insert_errmsg
? insert_errmsg
:
697 parse_errmsg
? parse_errmsg
:
698 recognized_mnemonic
?
699 _("unrecognized form of instruction") :
700 _("unrecognized instruction"));
702 if (strlen (start
) > 50)
703 /* xgettext:c-format */
704 sprintf (errbuf
, "%s `%.50s...'", tmp_errmsg
, start
);
706 /* xgettext:c-format */
707 sprintf (errbuf
, "%s `%.50s'", tmp_errmsg
, start
);
709 if (strlen (start
) > 50)
710 /* xgettext:c-format */
711 sprintf (errbuf
, _("bad instruction `%.50s...'"), start
);
713 /* xgettext:c-format */
714 sprintf (errbuf
, _("bad instruction `%.50s'"), start
);