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 "or1k-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. */
54 static const char * MISSING_CLOSING_PARENTHESIS = N_("missing `)'");
56 #define CGEN_VERBOSE_ASSEMBLER_ERRORS
59 parse_disp26 (CGEN_CPU_DESC cd,
63 enum cgen_parse_operand_result * resultp,
66 const char *errmsg = NULL;
67 enum cgen_parse_operand_result result_type;
69 if (strncasecmp (*strp, "plt(", 4) == 0)
74 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_OR1K_PLT26,
75 & result_type, & value);
77 return MISSING_CLOSING_PARENTHESIS;
80 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
81 value = (value >> 2) & 0xffff;
85 return cgen_parse_address (cd, strp, opindex, opinfo, resultp, valuep);
89 parse_simm16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, long * valuep)
92 enum cgen_parse_operand_result result_type;
98 if (strncasecmp (*strp, "hi(", 3) == 0)
103 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,
104 & result_type, & value);
106 errmsg = MISSING_CLOSING_PARENTHESIS;
112 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
116 ret = (ret ^ 0x8000) - 0x8000;
119 else if (strncasecmp (*strp, "lo(", 3) == 0)
124 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
125 & result_type, & value);
127 return MISSING_CLOSING_PARENTHESIS;
132 if (result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
135 ret = (ret ^ 0x8000) - 0x8000;
138 else if (strncasecmp (*strp, "got(", 4) == 0)
143 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_OR1K_GOT16,
144 & result_type, & value);
146 return MISSING_CLOSING_PARENTHESIS;
149 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
154 else if (strncasecmp (*strp, "gotpchi(", 8) == 0)
159 errmsg = cgen_parse_address (cd, strp, opindex,
160 BFD_RELOC_OR1K_GOTPC_HI16,
161 & result_type, & value);
163 return MISSING_CLOSING_PARENTHESIS;
166 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
167 value = (value >> 16) & 0xffff;
171 else if (strncasecmp (*strp, "gotpclo(", 8) == 0)
176 errmsg = cgen_parse_address (cd, strp, opindex,
177 BFD_RELOC_OR1K_GOTPC_LO16,
178 &result_type, &value);
180 return MISSING_CLOSING_PARENTHESIS;
183 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
188 else if (strncasecmp (*strp, "gotoffhi(", 9) == 0)
193 errmsg = cgen_parse_address (cd, strp, opindex,
194 BFD_RELOC_OR1K_GOTOFF_HI16,
195 & result_type, & value);
198 return MISSING_CLOSING_PARENTHESIS;
201 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
202 value = (value >> 16) & 0xffff;
206 else if (strncasecmp (*strp, "gotofflo(", 9) == 0)
211 errmsg = cgen_parse_address (cd, strp, opindex,
212 BFD_RELOC_OR1K_GOTOFF_LO16,
213 &result_type, &value);
215 return MISSING_CLOSING_PARENTHESIS;
218 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
223 else if (strncasecmp (*strp, "tlsgdhi(", 8) == 0)
228 errmsg = cgen_parse_address (cd, strp, opindex,
229 BFD_RELOC_OR1K_TLS_GD_HI16,
230 & result_type, & value);
233 return MISSING_CLOSING_PARENTHESIS;
236 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
237 value = (value >> 16) & 0xffff;
241 else if (strncasecmp (*strp, "tlsgdlo(", 8) == 0)
246 errmsg = cgen_parse_address (cd, strp, opindex,
247 BFD_RELOC_OR1K_TLS_GD_LO16,
248 &result_type, &value);
250 return MISSING_CLOSING_PARENTHESIS;
253 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
258 else if (strncasecmp (*strp, "tlsldmhi(", 9) == 0)
263 errmsg = cgen_parse_address (cd, strp, opindex,
264 BFD_RELOC_OR1K_TLS_LDM_HI16,
265 & result_type, & value);
268 return MISSING_CLOSING_PARENTHESIS;
271 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
272 value = (value >> 16) & 0xffff;
276 else if (strncasecmp (*strp, "tlsldmlo(", 9) == 0)
281 errmsg = cgen_parse_address (cd, strp, opindex,
282 BFD_RELOC_OR1K_TLS_LDM_LO16,
283 &result_type, &value);
285 return MISSING_CLOSING_PARENTHESIS;
288 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
293 else if (strncasecmp (*strp, "dtpoffhi(", 9) == 0)
298 errmsg = cgen_parse_address (cd, strp, opindex,
299 BFD_RELOC_OR1K_TLS_LDO_HI16,
300 & result_type, & value);
303 return MISSING_CLOSING_PARENTHESIS;
306 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
307 value = (value >> 16) & 0xffff;
311 else if (strncasecmp (*strp, "dtpofflo(", 9) == 0)
316 errmsg = cgen_parse_address (cd, strp, opindex,
317 BFD_RELOC_OR1K_TLS_LDO_LO16,
318 &result_type, &value);
320 return MISSING_CLOSING_PARENTHESIS;
323 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
328 else if (strncasecmp (*strp, "gottpoffhi(", 11) == 0)
333 errmsg = cgen_parse_address (cd, strp, opindex,
334 BFD_RELOC_OR1K_TLS_IE_HI16,
335 & result_type, & value);
338 return MISSING_CLOSING_PARENTHESIS;
341 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
342 value = (value >> 16) & 0xffff;
346 else if (strncasecmp (*strp, "gottpofflo(", 11) == 0)
351 errmsg = cgen_parse_address (cd, strp, opindex,
352 BFD_RELOC_OR1K_TLS_IE_LO16,
353 &result_type, &value);
355 return MISSING_CLOSING_PARENTHESIS;
358 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
363 else if (strncasecmp (*strp, "tpoffhi(", 8) == 0)
368 errmsg = cgen_parse_address (cd, strp, opindex,
369 BFD_RELOC_OR1K_TLS_LE_HI16,
370 & result_type, & value);
373 return MISSING_CLOSING_PARENTHESIS;
376 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
377 value = (value >> 16) & 0xffff;
381 else if (strncasecmp (*strp, "tpofflo(", 8) == 0)
386 errmsg = cgen_parse_address (cd, strp, opindex,
387 BFD_RELOC_OR1K_TLS_LE_LO16,
388 &result_type, &value);
390 return MISSING_CLOSING_PARENTHESIS;
393 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
401 errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
412 parse_uimm16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, unsigned long * valuep)
414 const char *errmsg = parse_simm16(cd, strp, opindex, (long *) valuep);
423 const char * or1k_cgen_parse_operand
424 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
426 /* Main entry point for operand parsing.
428 This function is basically just a big switch statement. Earlier versions
429 used tables to look up the function to use, but
430 - if the table contains both assembler and disassembler functions then
431 the disassembler contains much of the assembler and vice-versa,
432 - there's a lot of inlining possibilities as things grow,
433 - using a switch statement avoids the function call overhead.
435 This function could be moved into `parse_insn_normal', but keeping it
436 separate makes clear the interface between `parse_insn_normal' and each of
440 or1k_cgen_parse_operand (CGEN_CPU_DESC cd,
443 CGEN_FIELDS * fields)
445 const char * errmsg = NULL;
446 /* Used by scalar operands that still need to be parsed. */
447 long junk ATTRIBUTE_UNUSED;
451 case OR1K_OPERAND_DISP26 :
454 errmsg = parse_disp26 (cd, strp, OR1K_OPERAND_DISP26, 0, NULL, & value);
455 fields->f_disp26 = value;
458 case OR1K_OPERAND_RA :
459 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_gpr, & fields->f_r2);
461 case OR1K_OPERAND_RADF :
462 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fdr, & fields->f_r1);
464 case OR1K_OPERAND_RASF :
465 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fsr, & fields->f_r2);
467 case OR1K_OPERAND_RB :
468 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_gpr, & fields->f_r3);
470 case OR1K_OPERAND_RBDF :
471 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fdr, & fields->f_r1);
473 case OR1K_OPERAND_RBSF :
474 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fsr, & fields->f_r3);
476 case OR1K_OPERAND_RD :
477 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_gpr, & fields->f_r1);
479 case OR1K_OPERAND_RDDF :
480 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fdr, & fields->f_r1);
482 case OR1K_OPERAND_RDSF :
483 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fsr, & fields->f_r1);
485 case OR1K_OPERAND_SIMM16 :
486 errmsg = parse_simm16 (cd, strp, OR1K_OPERAND_SIMM16, (long *) (& fields->f_simm16));
488 case OR1K_OPERAND_SIMM16_SPLIT :
489 errmsg = parse_simm16 (cd, strp, OR1K_OPERAND_SIMM16_SPLIT, (long *) (& fields->f_simm16_split));
491 case OR1K_OPERAND_UIMM16 :
492 errmsg = parse_uimm16 (cd, strp, OR1K_OPERAND_UIMM16, (unsigned long *) (& fields->f_uimm16));
494 case OR1K_OPERAND_UIMM16_SPLIT :
495 errmsg = parse_uimm16 (cd, strp, OR1K_OPERAND_UIMM16_SPLIT, (unsigned long *) (& fields->f_uimm16_split));
497 case OR1K_OPERAND_UIMM6 :
498 errmsg = cgen_parse_unsigned_integer (cd, strp, OR1K_OPERAND_UIMM6, (unsigned long *) (& fields->f_uimm6));
502 /* xgettext:c-format */
503 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
510 cgen_parse_fn * const or1k_cgen_parse_handlers[] =
516 or1k_cgen_init_asm (CGEN_CPU_DESC cd)
518 or1k_cgen_init_opcode_table (cd);
519 or1k_cgen_init_ibld_table (cd);
520 cd->parse_handlers = & or1k_cgen_parse_handlers[0];
521 cd->parse_operand = or1k_cgen_parse_operand;
522 #ifdef CGEN_ASM_INIT_HOOK
529 /* Regex construction routine.
531 This translates an opcode syntax string into a regex string,
532 by replacing any non-character syntax element (such as an
533 opcode) with the pattern '.*'
535 It then compiles the regex and stores it in the opcode, for
536 later use by or1k_cgen_assemble_insn
538 Returns NULL for success, an error message for failure. */
541 or1k_cgen_build_insn_regex (CGEN_INSN *insn)
543 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
544 const char *mnem = CGEN_INSN_MNEMONIC (insn);
545 char rxbuf[CGEN_MAX_RX_ELEMENTS];
547 const CGEN_SYNTAX_CHAR_TYPE *syn;
550 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
552 /* Mnemonics come first in the syntax string. */
553 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
554 return _("missing mnemonic in syntax string");
557 /* Generate a case sensitive regular expression that emulates case
558 insensitive matching in the "C" locale. We cannot generate a case
559 insensitive regular expression because in Turkish locales, 'i' and 'I'
560 are not equal modulo case conversion. */
562 /* Copy the literal mnemonic out of the insn. */
563 for (; *mnem; mnem++)
578 /* Copy any remaining literals from the syntax string into the rx. */
579 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
581 if (CGEN_SYNTAX_CHAR_P (* syn))
583 char c = CGEN_SYNTAX_CHAR (* syn);
587 /* Escape any regex metacharacters in the syntax. */
588 case '.': case '[': case '\\':
589 case '*': case '^': case '$':
591 #ifdef CGEN_ESCAPE_EXTENDED_REGEX
592 case '?': case '{': case '}':
593 case '(': case ')': case '*':
594 case '|': case '+': case ']':
615 /* Replace non-syntax fields with globs. */
621 /* Trailing whitespace ok. */
628 /* But anchor it after that. */
632 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
633 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
641 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
642 regfree ((regex_t *) CGEN_INSN_RX (insn));
643 free (CGEN_INSN_RX (insn));
644 (CGEN_INSN_RX (insn)) = NULL;
650 /* Default insn parser.
652 The syntax string is scanned and operands are parsed and stored in FIELDS.
653 Relocs are queued as we go via other callbacks.
655 ??? Note that this is currently an all-or-nothing parser. If we fail to
656 parse the instruction, we return 0 and the caller will start over from
657 the beginning. Backtracking will be necessary in parsing subexpressions,
658 but that can be handled there. Not handling backtracking here may get
659 expensive in the case of the m68k. Deal with later.
661 Returns NULL for success, an error message for failure. */
664 parse_insn_normal (CGEN_CPU_DESC cd,
665 const CGEN_INSN *insn,
669 /* ??? Runtime added insns not handled yet. */
670 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
671 const char *str = *strp;
674 const CGEN_SYNTAX_CHAR_TYPE * syn;
675 #ifdef CGEN_MNEMONIC_OPERANDS
680 /* For now we assume the mnemonic is first (there are no leading operands).
681 We can parse it without needing to set up operand parsing.
682 GAS's input scrubber will ensure mnemonics are lowercase, but we may
683 not be called from GAS. */
684 p = CGEN_INSN_MNEMONIC (insn);
685 while (*p && TOLOWER (*p) == TOLOWER (*str))
689 return _("unrecognized instruction");
691 #ifndef CGEN_MNEMONIC_OPERANDS
692 if (* str && ! ISSPACE (* str))
693 return _("unrecognized instruction");
696 CGEN_INIT_PARSE (cd);
697 cgen_init_parse_operand (cd);
698 #ifdef CGEN_MNEMONIC_OPERANDS
702 /* We don't check for (*str != '\0') here because we want to parse
703 any trailing fake arguments in the syntax string. */
704 syn = CGEN_SYNTAX_STRING (syntax);
706 /* Mnemonics come first for now, ensure valid string. */
707 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
714 /* Non operand chars must match exactly. */
715 if (CGEN_SYNTAX_CHAR_P (* syn))
717 /* FIXME: While we allow for non-GAS callers above, we assume the
718 first char after the mnemonic part is a space. */
719 /* FIXME: We also take inappropriate advantage of the fact that
720 GAS's input scrubber will remove extraneous blanks. */
721 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
723 #ifdef CGEN_MNEMONIC_OPERANDS
724 if (CGEN_SYNTAX_CHAR(* syn) == ' ')
732 /* Syntax char didn't match. Can't be this insn. */
733 static char msg [80];
735 /* xgettext:c-format */
736 sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
737 CGEN_SYNTAX_CHAR(*syn), *str);
742 /* Ran out of input. */
743 static char msg [80];
745 /* xgettext:c-format */
746 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
747 CGEN_SYNTAX_CHAR(*syn));
753 #ifdef CGEN_MNEMONIC_OPERANDS
754 (void) past_opcode_p;
756 /* We have an operand of some sort. */
757 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields);
761 /* Done with this operand, continue with next one. */
765 /* If we're at the end of the syntax string, we're done. */
768 /* FIXME: For the moment we assume a valid `str' can only contain
769 blanks now. IE: We needn't try again with a longer version of
770 the insn and it is assumed that longer versions of insns appear
771 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
772 while (ISSPACE (* str))
776 return _("junk at end of line"); /* FIXME: would like to include `str' */
781 /* We couldn't parse it. */
782 return _("unrecognized instruction");
786 This routine is called for each instruction to be assembled.
787 STR points to the insn to be assembled.
788 We assume all necessary tables have been initialized.
789 The assembled instruction, less any fixups, is stored in BUF.
790 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
791 still needs to be converted to target byte order, otherwise BUF is an array
792 of bytes in target byte order.
793 The result is a pointer to the insn's entry in the opcode table,
794 or NULL if an error occured (an error message will have already been
797 Note that when processing (non-alias) macro-insns,
798 this function recurses.
800 ??? It's possible to make this cpu-independent.
801 One would have to deal with a few minor things.
802 At this point in time doing so would be more of a curiosity than useful
803 [for example this file isn't _that_ big], but keeping the possibility in
804 mind helps keep the design clean. */
807 or1k_cgen_assemble_insn (CGEN_CPU_DESC cd,
810 CGEN_INSN_BYTES_PTR buf,
814 CGEN_INSN_LIST *ilist;
815 const char *parse_errmsg = NULL;
816 const char *insert_errmsg = NULL;
817 int recognized_mnemonic = 0;
819 /* Skip leading white space. */
820 while (ISSPACE (* str))
823 /* The instructions are stored in hashed lists.
824 Get the first in the list. */
825 ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
827 /* Keep looking until we find a match. */
829 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
831 const CGEN_INSN *insn = ilist->insn;
832 recognized_mnemonic = 1;
834 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
835 /* Not usually needed as unsupported opcodes
836 shouldn't be in the hash lists. */
837 /* Is this insn supported by the selected cpu? */
838 if (! or1k_cgen_insn_supported (cd, insn))
841 /* If the RELAXED attribute is set, this is an insn that shouldn't be
842 chosen immediately. Instead, it is used during assembler/linker
843 relaxation if possible. */
844 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
849 /* Skip this insn if str doesn't look right lexically. */
850 if (CGEN_INSN_RX (insn) != NULL &&
851 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
854 /* Allow parse/insert handlers to obtain length of insn. */
855 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
857 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
858 if (parse_errmsg != NULL)
861 /* ??? 0 is passed for `pc'. */
862 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
864 if (insert_errmsg != NULL)
867 /* It is up to the caller to actually output the insn and any
873 static char errbuf[150];
874 const char *tmp_errmsg;
875 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
883 /* If requesting verbose error messages, use insert_errmsg.
884 Failing that, use parse_errmsg. */
885 tmp_errmsg = (insert_errmsg ? insert_errmsg :
886 parse_errmsg ? parse_errmsg :
887 recognized_mnemonic ?
888 _("unrecognized form of instruction") :
889 _("unrecognized instruction"));
891 if (strlen (start) > 50)
892 /* xgettext:c-format */
893 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
895 /* xgettext:c-format */
896 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
900 if (strlen (start) > 50)
901 /* xgettext:c-format */
902 sprintf (errbuf, _("bad instruction `%.50s...'"), start);
904 /* xgettext:c-format */
905 sprintf (errbuf, _("bad instruction `%.50s'"), start);