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 opcodes_error_handler
504 (_("internal error: unrecognized field %d while parsing"),
512 cgen_parse_fn * const or1k_cgen_parse_handlers[] =
518 or1k_cgen_init_asm (CGEN_CPU_DESC cd)
520 or1k_cgen_init_opcode_table (cd);
521 or1k_cgen_init_ibld_table (cd);
522 cd->parse_handlers = & or1k_cgen_parse_handlers[0];
523 cd->parse_operand = or1k_cgen_parse_operand;
524 #ifdef CGEN_ASM_INIT_HOOK
531 /* Regex construction routine.
533 This translates an opcode syntax string into a regex string,
534 by replacing any non-character syntax element (such as an
535 opcode) with the pattern '.*'
537 It then compiles the regex and stores it in the opcode, for
538 later use by or1k_cgen_assemble_insn
540 Returns NULL for success, an error message for failure. */
543 or1k_cgen_build_insn_regex (CGEN_INSN *insn)
545 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
546 const char *mnem = CGEN_INSN_MNEMONIC (insn);
547 char rxbuf[CGEN_MAX_RX_ELEMENTS];
549 const CGEN_SYNTAX_CHAR_TYPE *syn;
552 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
554 /* Mnemonics come first in the syntax string. */
555 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
556 return _("missing mnemonic in syntax string");
559 /* Generate a case sensitive regular expression that emulates case
560 insensitive matching in the "C" locale. We cannot generate a case
561 insensitive regular expression because in Turkish locales, 'i' and 'I'
562 are not equal modulo case conversion. */
564 /* Copy the literal mnemonic out of the insn. */
565 for (; *mnem; mnem++)
580 /* Copy any remaining literals from the syntax string into the rx. */
581 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
583 if (CGEN_SYNTAX_CHAR_P (* syn))
585 char c = CGEN_SYNTAX_CHAR (* syn);
589 /* Escape any regex metacharacters in the syntax. */
590 case '.': case '[': case '\\':
591 case '*': case '^': case '$':
593 #ifdef CGEN_ESCAPE_EXTENDED_REGEX
594 case '?': case '{': case '}':
595 case '(': case ')': case '*':
596 case '|': case '+': case ']':
617 /* Replace non-syntax fields with globs. */
623 /* Trailing whitespace ok. */
630 /* But anchor it after that. */
634 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
635 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
643 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
644 regfree ((regex_t *) CGEN_INSN_RX (insn));
645 free (CGEN_INSN_RX (insn));
646 (CGEN_INSN_RX (insn)) = NULL;
652 /* Default insn parser.
654 The syntax string is scanned and operands are parsed and stored in FIELDS.
655 Relocs are queued as we go via other callbacks.
657 ??? Note that this is currently an all-or-nothing parser. If we fail to
658 parse the instruction, we return 0 and the caller will start over from
659 the beginning. Backtracking will be necessary in parsing subexpressions,
660 but that can be handled there. Not handling backtracking here may get
661 expensive in the case of the m68k. Deal with later.
663 Returns NULL for success, an error message for failure. */
666 parse_insn_normal (CGEN_CPU_DESC cd,
667 const CGEN_INSN *insn,
671 /* ??? Runtime added insns not handled yet. */
672 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
673 const char *str = *strp;
676 const CGEN_SYNTAX_CHAR_TYPE * syn;
677 #ifdef CGEN_MNEMONIC_OPERANDS
682 /* For now we assume the mnemonic is first (there are no leading operands).
683 We can parse it without needing to set up operand parsing.
684 GAS's input scrubber will ensure mnemonics are lowercase, but we may
685 not be called from GAS. */
686 p = CGEN_INSN_MNEMONIC (insn);
687 while (*p && TOLOWER (*p) == TOLOWER (*str))
691 return _("unrecognized instruction");
693 #ifndef CGEN_MNEMONIC_OPERANDS
694 if (* str && ! ISSPACE (* str))
695 return _("unrecognized instruction");
698 CGEN_INIT_PARSE (cd);
699 cgen_init_parse_operand (cd);
700 #ifdef CGEN_MNEMONIC_OPERANDS
704 /* We don't check for (*str != '\0') here because we want to parse
705 any trailing fake arguments in the syntax string. */
706 syn = CGEN_SYNTAX_STRING (syntax);
708 /* Mnemonics come first for now, ensure valid string. */
709 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
716 /* Non operand chars must match exactly. */
717 if (CGEN_SYNTAX_CHAR_P (* syn))
719 /* FIXME: While we allow for non-GAS callers above, we assume the
720 first char after the mnemonic part is a space. */
721 /* FIXME: We also take inappropriate advantage of the fact that
722 GAS's input scrubber will remove extraneous blanks. */
723 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
725 #ifdef CGEN_MNEMONIC_OPERANDS
726 if (CGEN_SYNTAX_CHAR(* syn) == ' ')
734 /* Syntax char didn't match. Can't be this insn. */
735 static char msg [80];
737 /* xgettext:c-format */
738 sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
739 CGEN_SYNTAX_CHAR(*syn), *str);
744 /* Ran out of input. */
745 static char msg [80];
747 /* xgettext:c-format */
748 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
749 CGEN_SYNTAX_CHAR(*syn));
755 #ifdef CGEN_MNEMONIC_OPERANDS
756 (void) past_opcode_p;
758 /* We have an operand of some sort. */
759 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields);
763 /* Done with this operand, continue with next one. */
767 /* If we're at the end of the syntax string, we're done. */
770 /* FIXME: For the moment we assume a valid `str' can only contain
771 blanks now. IE: We needn't try again with a longer version of
772 the insn and it is assumed that longer versions of insns appear
773 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
774 while (ISSPACE (* str))
778 return _("junk at end of line"); /* FIXME: would like to include `str' */
783 /* We couldn't parse it. */
784 return _("unrecognized instruction");
788 This routine is called for each instruction to be assembled.
789 STR points to the insn to be assembled.
790 We assume all necessary tables have been initialized.
791 The assembled instruction, less any fixups, is stored in BUF.
792 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
793 still needs to be converted to target byte order, otherwise BUF is an array
794 of bytes in target byte order.
795 The result is a pointer to the insn's entry in the opcode table,
796 or NULL if an error occured (an error message will have already been
799 Note that when processing (non-alias) macro-insns,
800 this function recurses.
802 ??? It's possible to make this cpu-independent.
803 One would have to deal with a few minor things.
804 At this point in time doing so would be more of a curiosity than useful
805 [for example this file isn't _that_ big], but keeping the possibility in
806 mind helps keep the design clean. */
809 or1k_cgen_assemble_insn (CGEN_CPU_DESC cd,
812 CGEN_INSN_BYTES_PTR buf,
816 CGEN_INSN_LIST *ilist;
817 const char *parse_errmsg = NULL;
818 const char *insert_errmsg = NULL;
819 int recognized_mnemonic = 0;
821 /* Skip leading white space. */
822 while (ISSPACE (* str))
825 /* The instructions are stored in hashed lists.
826 Get the first in the list. */
827 ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
829 /* Keep looking until we find a match. */
831 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
833 const CGEN_INSN *insn = ilist->insn;
834 recognized_mnemonic = 1;
836 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
837 /* Not usually needed as unsupported opcodes
838 shouldn't be in the hash lists. */
839 /* Is this insn supported by the selected cpu? */
840 if (! or1k_cgen_insn_supported (cd, insn))
843 /* If the RELAXED attribute is set, this is an insn that shouldn't be
844 chosen immediately. Instead, it is used during assembler/linker
845 relaxation if possible. */
846 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
851 /* Skip this insn if str doesn't look right lexically. */
852 if (CGEN_INSN_RX (insn) != NULL &&
853 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
856 /* Allow parse/insert handlers to obtain length of insn. */
857 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
859 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
860 if (parse_errmsg != NULL)
863 /* ??? 0 is passed for `pc'. */
864 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
866 if (insert_errmsg != NULL)
869 /* It is up to the caller to actually output the insn and any
875 static char errbuf[150];
876 const char *tmp_errmsg;
877 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
885 /* If requesting verbose error messages, use insert_errmsg.
886 Failing that, use parse_errmsg. */
887 tmp_errmsg = (insert_errmsg ? insert_errmsg :
888 parse_errmsg ? parse_errmsg :
889 recognized_mnemonic ?
890 _("unrecognized form of instruction") :
891 _("unrecognized instruction"));
893 if (strlen (start) > 50)
894 /* xgettext:c-format */
895 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
897 /* xgettext:c-format */
898 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
902 if (strlen (start) > 50)
903 /* xgettext:c-format */
904 sprintf (errbuf, _("bad instruction `%.50s...'"), start);
906 /* xgettext:c-format */
907 sprintf (errbuf, _("bad instruction `%.50s'"), start);