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 Free Software Foundation, Inc.
9 This file is part of the GNU Binutils and GDB, the GNU debugger.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2, or (at your option)
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software Foundation, Inc.,
23 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
33 #include "fr30-desc.h"
37 #include "libiberty.h"
38 #include "safe-ctype.h"
41 #define min(a,b) ((a) < (b) ? (a) : (b))
43 #define max(a,b) ((a) > (b) ? (a) : (b))
45 static const char * parse_insn_normal
46 (CGEN_CPU_DESC
, const CGEN_INSN
*, const char **, CGEN_FIELDS
*);
48 /* -- assembler routines inserted here. */
51 /* Handle register lists for LDMx and STMx. */
53 static int parse_register_number
54 PARAMS ((const char **));
55 static const char * parse_register_list
56 PARAMS ((CGEN_CPU_DESC
, const char **, int, unsigned long *, int, int));
57 static const char * parse_low_register_list_ld
58 PARAMS ((CGEN_CPU_DESC
, const char **, int, unsigned long *));
59 static const char * parse_hi_register_list_ld
60 PARAMS ((CGEN_CPU_DESC
, const char **, int, unsigned long *));
61 static const char * parse_low_register_list_st
62 PARAMS ((CGEN_CPU_DESC
, const char **, int, unsigned long *));
63 static const char * parse_hi_register_list_st
64 PARAMS ((CGEN_CPU_DESC
, const char **, int, unsigned long *));
67 parse_register_number (strp
)
71 if (**strp
< '0' || **strp
> '9')
72 return -1; /* error. */
76 if (**strp
>= '0' && **strp
<= '9')
78 regno
= regno
* 10 + (**strp
- '0');
86 parse_register_list (cd
, strp
, opindex
, valuep
, high_low
, load_store
)
87 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED
;
89 int opindex ATTRIBUTE_UNUSED
;
90 unsigned long *valuep
;
91 int high_low
; /* 0 == high, 1 == low */
92 int load_store
; /* 0 == load, 1 == store */
97 while (**strp
&& **strp
!= ')')
99 if (**strp
!= 'R' && **strp
!= 'r')
103 regno
= parse_register_number (strp
);
105 return "Register number is not valid";
106 if (regno
> 7 && !high_low
)
107 return "Register must be between r0 and r7";
108 if (regno
< 8 && high_low
)
109 return "Register must be between r8 and r15";
114 if (load_store
) /* Mask is reversed for store. */
115 *valuep
|= 0x80 >> regno
;
117 *valuep
|= 1 << regno
;
121 if (*(*strp
+ 1) == ')')
127 if (!*strp
|| **strp
!= ')')
128 return "Register list is not valid";
134 parse_low_register_list_ld (cd
, strp
, opindex
, valuep
)
138 unsigned long *valuep
;
140 return parse_register_list (cd
, strp
, opindex
, valuep
, 0/*low*/, 0/*load*/);
144 parse_hi_register_list_ld (cd
, strp
, opindex
, valuep
)
148 unsigned long *valuep
;
150 return parse_register_list (cd
, strp
, opindex
, valuep
, 1/*high*/, 0/*load*/);
154 parse_low_register_list_st (cd
, strp
, opindex
, valuep
)
158 unsigned long *valuep
;
160 return parse_register_list (cd
, strp
, opindex
, valuep
, 0/*low*/, 1/*store*/);
164 parse_hi_register_list_st (cd
, strp
, opindex
, valuep
)
168 unsigned long *valuep
;
170 return parse_register_list (cd
, strp
, opindex
, valuep
, 1/*high*/, 1/*store*/);
175 const char * fr30_cgen_parse_operand
176 PARAMS ((CGEN_CPU_DESC
, int, const char **, CGEN_FIELDS
*));
178 /* Main entry point for operand parsing.
180 This function is basically just a big switch statement. Earlier versions
181 used tables to look up the function to use, but
182 - if the table contains both assembler and disassembler functions then
183 the disassembler contains much of the assembler and vice-versa,
184 - there's a lot of inlining possibilities as things grow,
185 - using a switch statement avoids the function call overhead.
187 This function could be moved into `parse_insn_normal', but keeping it
188 separate makes clear the interface between `parse_insn_normal' and each of
192 fr30_cgen_parse_operand (cd
, opindex
, strp
, fields
)
196 CGEN_FIELDS
* fields
;
198 const char * errmsg
= NULL
;
199 /* Used by scalar operands that still need to be parsed. */
200 long junk ATTRIBUTE_UNUSED
;
204 case FR30_OPERAND_CRI
:
205 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_cr_names
, & fields
->f_CRi
);
207 case FR30_OPERAND_CRJ
:
208 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_cr_names
, & fields
->f_CRj
);
210 case FR30_OPERAND_R13
:
211 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_h_r13
, & junk
);
213 case FR30_OPERAND_R14
:
214 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_h_r14
, & junk
);
216 case FR30_OPERAND_R15
:
217 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_h_r15
, & junk
);
219 case FR30_OPERAND_RI
:
220 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_gr_names
, & fields
->f_Ri
);
222 case FR30_OPERAND_RIC
:
223 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_gr_names
, & fields
->f_Ric
);
225 case FR30_OPERAND_RJ
:
226 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_gr_names
, & fields
->f_Rj
);
228 case FR30_OPERAND_RJC
:
229 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_gr_names
, & fields
->f_Rjc
);
231 case FR30_OPERAND_RS1
:
232 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_dr_names
, & fields
->f_Rs1
);
234 case FR30_OPERAND_RS2
:
235 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_dr_names
, & fields
->f_Rs2
);
237 case FR30_OPERAND_CC
:
238 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_CC
, (unsigned long *) (& fields
->f_cc
));
240 case FR30_OPERAND_CCC
:
241 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_CCC
, (unsigned long *) (& fields
->f_ccc
));
243 case FR30_OPERAND_DIR10
:
244 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_DIR10
, (unsigned long *) (& fields
->f_dir10
));
246 case FR30_OPERAND_DIR8
:
247 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_DIR8
, (unsigned long *) (& fields
->f_dir8
));
249 case FR30_OPERAND_DIR9
:
250 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_DIR9
, (unsigned long *) (& fields
->f_dir9
));
252 case FR30_OPERAND_DISP10
:
253 errmsg
= cgen_parse_signed_integer (cd
, strp
, FR30_OPERAND_DISP10
, (long *) (& fields
->f_disp10
));
255 case FR30_OPERAND_DISP8
:
256 errmsg
= cgen_parse_signed_integer (cd
, strp
, FR30_OPERAND_DISP8
, (long *) (& fields
->f_disp8
));
258 case FR30_OPERAND_DISP9
:
259 errmsg
= cgen_parse_signed_integer (cd
, strp
, FR30_OPERAND_DISP9
, (long *) (& fields
->f_disp9
));
261 case FR30_OPERAND_I20
:
262 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_I20
, (unsigned long *) (& fields
->f_i20
));
264 case FR30_OPERAND_I32
:
265 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_I32
, (unsigned long *) (& fields
->f_i32
));
267 case FR30_OPERAND_I8
:
268 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_I8
, (unsigned long *) (& fields
->f_i8
));
270 case FR30_OPERAND_LABEL12
:
273 errmsg
= cgen_parse_address (cd
, strp
, FR30_OPERAND_LABEL12
, 0, NULL
, & value
);
274 fields
->f_rel12
= value
;
277 case FR30_OPERAND_LABEL9
:
280 errmsg
= cgen_parse_address (cd
, strp
, FR30_OPERAND_LABEL9
, 0, NULL
, & value
);
281 fields
->f_rel9
= value
;
284 case FR30_OPERAND_M4
:
285 errmsg
= cgen_parse_signed_integer (cd
, strp
, FR30_OPERAND_M4
, (long *) (& fields
->f_m4
));
287 case FR30_OPERAND_PS
:
288 errmsg
= cgen_parse_keyword (cd
, strp
, & fr30_cgen_opval_h_ps
, & junk
);
290 case FR30_OPERAND_REGLIST_HI_LD
:
291 errmsg
= parse_hi_register_list_ld (cd
, strp
, FR30_OPERAND_REGLIST_HI_LD
, (unsigned long *) (& fields
->f_reglist_hi_ld
));
293 case FR30_OPERAND_REGLIST_HI_ST
:
294 errmsg
= parse_hi_register_list_st (cd
, strp
, FR30_OPERAND_REGLIST_HI_ST
, (unsigned long *) (& fields
->f_reglist_hi_st
));
296 case FR30_OPERAND_REGLIST_LOW_LD
:
297 errmsg
= parse_low_register_list_ld (cd
, strp
, FR30_OPERAND_REGLIST_LOW_LD
, (unsigned long *) (& fields
->f_reglist_low_ld
));
299 case FR30_OPERAND_REGLIST_LOW_ST
:
300 errmsg
= parse_low_register_list_st (cd
, strp
, FR30_OPERAND_REGLIST_LOW_ST
, (unsigned long *) (& fields
->f_reglist_low_st
));
302 case FR30_OPERAND_S10
:
303 errmsg
= cgen_parse_signed_integer (cd
, strp
, FR30_OPERAND_S10
, (long *) (& fields
->f_s10
));
305 case FR30_OPERAND_U10
:
306 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_U10
, (unsigned long *) (& fields
->f_u10
));
308 case FR30_OPERAND_U4
:
309 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_U4
, (unsigned long *) (& fields
->f_u4
));
311 case FR30_OPERAND_U4C
:
312 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_U4C
, (unsigned long *) (& fields
->f_u4c
));
314 case FR30_OPERAND_U8
:
315 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_U8
, (unsigned long *) (& fields
->f_u8
));
317 case FR30_OPERAND_UDISP6
:
318 errmsg
= cgen_parse_unsigned_integer (cd
, strp
, FR30_OPERAND_UDISP6
, (unsigned long *) (& fields
->f_udisp6
));
322 /* xgettext:c-format */
323 fprintf (stderr
, _("Unrecognized field %d while parsing.\n"), opindex
);
330 cgen_parse_fn
* const fr30_cgen_parse_handlers
[] =
336 fr30_cgen_init_asm (cd
)
339 fr30_cgen_init_opcode_table (cd
);
340 fr30_cgen_init_ibld_table (cd
);
341 cd
->parse_handlers
= & fr30_cgen_parse_handlers
[0];
342 cd
->parse_operand
= fr30_cgen_parse_operand
;
347 /* Regex construction routine.
349 This translates an opcode syntax string into a regex string,
350 by replacing any non-character syntax element (such as an
351 opcode) with the pattern '.*'
353 It then compiles the regex and stores it in the opcode, for
354 later use by fr30_cgen_assemble_insn
356 Returns NULL for success, an error message for failure. */
359 fr30_cgen_build_insn_regex (CGEN_INSN
*insn
)
361 CGEN_OPCODE
*opc
= (CGEN_OPCODE
*) CGEN_INSN_OPCODE (insn
);
362 const char *mnem
= CGEN_INSN_MNEMONIC (insn
);
363 char rxbuf
[CGEN_MAX_RX_ELEMENTS
];
365 const CGEN_SYNTAX_CHAR_TYPE
*syn
;
368 syn
= CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc
));
370 /* Mnemonics come first in the syntax string. */
371 if (! CGEN_SYNTAX_MNEMONIC_P (* syn
))
372 return _("missing mnemonic in syntax string");
375 /* Generate a case sensitive regular expression that emulates case
376 insensitive matching in the "C" locale. We cannot generate a case
377 insensitive regular expression because in Turkish locales, 'i' and 'I'
378 are not equal modulo case conversion. */
380 /* Copy the literal mnemonic out of the insn. */
381 for (; *mnem
; mnem
++)
396 /* Copy any remaining literals from the syntax string into the rx. */
397 for(; * syn
!= 0 && rx
<= rxbuf
+ (CGEN_MAX_RX_ELEMENTS
- 7 - 4); ++syn
)
399 if (CGEN_SYNTAX_CHAR_P (* syn
))
401 char c
= CGEN_SYNTAX_CHAR (* syn
);
405 /* Escape any regex metacharacters in the syntax. */
406 case '.': case '[': case '\\':
407 case '*': case '^': case '$':
409 #ifdef CGEN_ESCAPE_EXTENDED_REGEX
410 case '?': case '{': case '}':
411 case '(': case ')': case '*':
412 case '|': case '+': case ']':
433 /* Replace non-syntax fields with globs. */
439 /* Trailing whitespace ok. */
446 /* But anchor it after that. */
450 CGEN_INSN_RX (insn
) = xmalloc (sizeof (regex_t
));
451 reg_err
= regcomp ((regex_t
*) CGEN_INSN_RX (insn
), rxbuf
, REG_NOSUB
);
459 regerror (reg_err
, (regex_t
*) CGEN_INSN_RX (insn
), msg
, 80);
460 regfree ((regex_t
*) CGEN_INSN_RX (insn
));
461 free (CGEN_INSN_RX (insn
));
462 (CGEN_INSN_RX (insn
)) = NULL
;
468 /* Default insn parser.
470 The syntax string is scanned and operands are parsed and stored in FIELDS.
471 Relocs are queued as we go via other callbacks.
473 ??? Note that this is currently an all-or-nothing parser. If we fail to
474 parse the instruction, we return 0 and the caller will start over from
475 the beginning. Backtracking will be necessary in parsing subexpressions,
476 but that can be handled there. Not handling backtracking here may get
477 expensive in the case of the m68k. Deal with later.
479 Returns NULL for success, an error message for failure. */
482 parse_insn_normal (CGEN_CPU_DESC cd
,
483 const CGEN_INSN
*insn
,
487 /* ??? Runtime added insns not handled yet. */
488 const CGEN_SYNTAX
*syntax
= CGEN_INSN_SYNTAX (insn
);
489 const char *str
= *strp
;
492 const CGEN_SYNTAX_CHAR_TYPE
* syn
;
493 #ifdef CGEN_MNEMONIC_OPERANDS
498 /* For now we assume the mnemonic is first (there are no leading operands).
499 We can parse it without needing to set up operand parsing.
500 GAS's input scrubber will ensure mnemonics are lowercase, but we may
501 not be called from GAS. */
502 p
= CGEN_INSN_MNEMONIC (insn
);
503 while (*p
&& TOLOWER (*p
) == TOLOWER (*str
))
507 return _("unrecognized instruction");
509 #ifndef CGEN_MNEMONIC_OPERANDS
510 if (* str
&& ! ISSPACE (* str
))
511 return _("unrecognized instruction");
514 CGEN_INIT_PARSE (cd
);
515 cgen_init_parse_operand (cd
);
516 #ifdef CGEN_MNEMONIC_OPERANDS
520 /* We don't check for (*str != '\0') here because we want to parse
521 any trailing fake arguments in the syntax string. */
522 syn
= CGEN_SYNTAX_STRING (syntax
);
524 /* Mnemonics come first for now, ensure valid string. */
525 if (! CGEN_SYNTAX_MNEMONIC_P (* syn
))
532 /* Non operand chars must match exactly. */
533 if (CGEN_SYNTAX_CHAR_P (* syn
))
535 /* FIXME: While we allow for non-GAS callers above, we assume the
536 first char after the mnemonic part is a space. */
537 /* FIXME: We also take inappropriate advantage of the fact that
538 GAS's input scrubber will remove extraneous blanks. */
539 if (TOLOWER (*str
) == TOLOWER (CGEN_SYNTAX_CHAR (* syn
)))
541 #ifdef CGEN_MNEMONIC_OPERANDS
542 if (CGEN_SYNTAX_CHAR(* syn
) == ' ')
550 /* Syntax char didn't match. Can't be this insn. */
551 static char msg
[80];
553 /* xgettext:c-format */
554 sprintf (msg
, _("syntax error (expected char `%c', found `%c')"),
555 CGEN_SYNTAX_CHAR(*syn
), *str
);
560 /* Ran out of input. */
561 static char msg
[80];
563 /* xgettext:c-format */
564 sprintf (msg
, _("syntax error (expected char `%c', found end of instruction)"),
565 CGEN_SYNTAX_CHAR(*syn
));
571 /* We have an operand of some sort. */
572 errmsg
= cd
->parse_operand (cd
, CGEN_SYNTAX_FIELD (*syn
),
577 /* Done with this operand, continue with next one. */
581 /* If we're at the end of the syntax string, we're done. */
584 /* FIXME: For the moment we assume a valid `str' can only contain
585 blanks now. IE: We needn't try again with a longer version of
586 the insn and it is assumed that longer versions of insns appear
587 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
588 while (ISSPACE (* str
))
592 return _("junk at end of line"); /* FIXME: would like to include `str' */
597 /* We couldn't parse it. */
598 return _("unrecognized instruction");
602 This routine is called for each instruction to be assembled.
603 STR points to the insn to be assembled.
604 We assume all necessary tables have been initialized.
605 The assembled instruction, less any fixups, is stored in BUF.
606 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
607 still needs to be converted to target byte order, otherwise BUF is an array
608 of bytes in target byte order.
609 The result is a pointer to the insn's entry in the opcode table,
610 or NULL if an error occured (an error message will have already been
613 Note that when processing (non-alias) macro-insns,
614 this function recurses.
616 ??? It's possible to make this cpu-independent.
617 One would have to deal with a few minor things.
618 At this point in time doing so would be more of a curiosity than useful
619 [for example this file isn't _that_ big], but keeping the possibility in
620 mind helps keep the design clean. */
623 fr30_cgen_assemble_insn (CGEN_CPU_DESC cd
,
626 CGEN_INSN_BYTES_PTR buf
,
630 CGEN_INSN_LIST
*ilist
;
631 const char *parse_errmsg
= NULL
;
632 const char *insert_errmsg
= NULL
;
633 int recognized_mnemonic
= 0;
635 /* Skip leading white space. */
636 while (ISSPACE (* str
))
639 /* The instructions are stored in hashed lists.
640 Get the first in the list. */
641 ilist
= CGEN_ASM_LOOKUP_INSN (cd
, str
);
643 /* Keep looking until we find a match. */
645 for ( ; ilist
!= NULL
; ilist
= CGEN_ASM_NEXT_INSN (ilist
))
647 const CGEN_INSN
*insn
= ilist
->insn
;
648 recognized_mnemonic
= 1;
650 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
651 /* Not usually needed as unsupported opcodes
652 shouldn't be in the hash lists. */
653 /* Is this insn supported by the selected cpu? */
654 if (! fr30_cgen_insn_supported (cd
, insn
))
657 /* If the RELAXED attribute is set, this is an insn that shouldn't be
658 chosen immediately. Instead, it is used during assembler/linker
659 relaxation if possible. */
660 if (CGEN_INSN_ATTR_VALUE (insn
, CGEN_INSN_RELAXED
) != 0)
665 /* Skip this insn if str doesn't look right lexically. */
666 if (CGEN_INSN_RX (insn
) != NULL
&&
667 regexec ((regex_t
*) CGEN_INSN_RX (insn
), str
, 0, NULL
, 0) == REG_NOMATCH
)
670 /* Allow parse/insert handlers to obtain length of insn. */
671 CGEN_FIELDS_BITSIZE (fields
) = CGEN_INSN_BITSIZE (insn
);
673 parse_errmsg
= CGEN_PARSE_FN (cd
, insn
) (cd
, insn
, & str
, fields
);
674 if (parse_errmsg
!= NULL
)
677 /* ??? 0 is passed for `pc'. */
678 insert_errmsg
= CGEN_INSERT_FN (cd
, insn
) (cd
, insn
, fields
, buf
,
680 if (insert_errmsg
!= NULL
)
683 /* It is up to the caller to actually output the insn and any
689 static char errbuf
[150];
690 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
691 const char *tmp_errmsg
;
693 /* If requesting verbose error messages, use insert_errmsg.
694 Failing that, use parse_errmsg. */
695 tmp_errmsg
= (insert_errmsg
? insert_errmsg
:
696 parse_errmsg
? parse_errmsg
:
697 recognized_mnemonic
?
698 _("unrecognized form of instruction") :
699 _("unrecognized instruction"));
701 if (strlen (start
) > 50)
702 /* xgettext:c-format */
703 sprintf (errbuf
, "%s `%.50s...'", tmp_errmsg
, start
);
705 /* xgettext:c-format */
706 sprintf (errbuf
, "%s `%.50s'", tmp_errmsg
, start
);
708 if (strlen (start
) > 50)
709 /* xgettext:c-format */
710 sprintf (errbuf
, _("bad instruction `%.50s...'"), start
);
712 /* xgettext:c-format */
713 sprintf (errbuf
, _("bad instruction `%.50s'"), start
);
721 #if 0 /* This calls back to GAS which we can't do without care. */
723 /* Record each member of OPVALS in the assembler's symbol table.
724 This lets GAS parse registers for us.
725 ??? Interesting idea but not currently used. */
727 /* Record each member of OPVALS in the assembler's symbol table.
728 FIXME: Not currently used. */
731 fr30_cgen_asm_hash_keywords (CGEN_CPU_DESC cd
, CGEN_KEYWORD
*opvals
)
733 CGEN_KEYWORD_SEARCH search
= cgen_keyword_search_init (opvals
, NULL
);
734 const CGEN_KEYWORD_ENTRY
* ke
;
736 while ((ke
= cgen_keyword_search_next (& search
)) != NULL
)
738 #if 0 /* Unnecessary, should be done in the search routine. */
739 if (! fr30_cgen_opval_supported (ke
))
742 cgen_asm_record_register (cd
, ke
->name
, ke
->value
);