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 `)'");
55 static const char * INVALID_STORE_RELOC = N_("relocation invalid for store");
56 static const char * INVALID_RELOC_TYPE = N_("internal relocation type invalid");
58 #define CGEN_VERBOSE_ASSEMBLER_ERRORS
61 parse_disp26 (CGEN_CPU_DESC cd,
64 int opinfo ATTRIBUTE_UNUSED,
65 enum cgen_parse_operand_result * resultp,
68 const char *str = *strp;
69 const char *errmsg = NULL;
70 bfd_reloc_code_real_type reloc = BFD_RELOC_OR1K_REL_26;
72 if (strncasecmp (str, "plta(", 5) == 0)
75 reloc = BFD_RELOC_OR1K_PLTA26;
77 else if (strncasecmp (str, "plt(", 4) == 0)
80 reloc = BFD_RELOC_OR1K_PLT26;
83 errmsg = cgen_parse_address (cd, strp, opindex, reloc, resultp, valuep);
85 if (reloc != BFD_RELOC_OR1K_REL_26)
88 errmsg = MISSING_CLOSING_PARENTHESIS;
97 parse_disp21 (CGEN_CPU_DESC cd,
100 int opinfo ATTRIBUTE_UNUSED,
101 enum cgen_parse_operand_result * resultp,
104 const char *str = *strp;
105 const char *errmsg = NULL;
106 bfd_reloc_code_real_type reloc = BFD_RELOC_OR1K_PCREL_PG21;
108 if (strncasecmp (str, "got(", 4) == 0)
111 reloc = BFD_RELOC_OR1K_GOT_PG21;
113 else if (strncasecmp (str, "tlsgd(", 6) == 0)
116 reloc = BFD_RELOC_OR1K_TLS_GD_PG21;
118 else if (strncasecmp (str, "tlsldm(", 7) == 0)
121 reloc = BFD_RELOC_OR1K_TLS_LDM_PG21;
123 else if (strncasecmp (str, "gottp(", 6) == 0)
126 reloc = BFD_RELOC_OR1K_TLS_IE_PG21;
129 errmsg = cgen_parse_address (cd, strp, opindex, reloc, resultp, valuep);
131 if (reloc != BFD_RELOC_OR1K_PCREL_PG21)
134 errmsg = MISSING_CLOSING_PARENTHESIS;
165 #define RCLASS_SHIFT 3
168 static const bfd_reloc_code_real_type or1k_imm16_relocs[][6] = {
170 BFD_RELOC_OR1K_SLO16,
172 BFD_RELOC_OR1K_SLO13,
175 { BFD_RELOC_OR1K_GOT16,
177 BFD_RELOC_OR1K_GOT_LO13,
181 { BFD_RELOC_OR1K_GOTPC_LO16,
185 BFD_RELOC_OR1K_GOTPC_HI16,
187 { BFD_RELOC_LO16_GOTOFF,
188 BFD_RELOC_OR1K_GOTOFF_SLO16,
191 BFD_RELOC_HI16_GOTOFF,
192 BFD_RELOC_HI16_S_GOTOFF },
193 { BFD_RELOC_OR1K_TLS_GD_LO16,
195 BFD_RELOC_OR1K_TLS_GD_LO13,
197 BFD_RELOC_OR1K_TLS_GD_HI16,
199 { BFD_RELOC_OR1K_TLS_LDM_LO16,
201 BFD_RELOC_OR1K_TLS_LDM_LO13,
203 BFD_RELOC_OR1K_TLS_LDM_HI16,
205 { BFD_RELOC_OR1K_TLS_LDO_LO16,
209 BFD_RELOC_OR1K_TLS_LDO_HI16,
211 { BFD_RELOC_OR1K_TLS_IE_LO16,
213 BFD_RELOC_OR1K_TLS_IE_LO13,
215 BFD_RELOC_OR1K_TLS_IE_HI16,
216 BFD_RELOC_OR1K_TLS_IE_AHI16 },
217 { BFD_RELOC_OR1K_TLS_LE_LO16,
218 BFD_RELOC_OR1K_TLS_LE_SLO16,
221 BFD_RELOC_OR1K_TLS_LE_HI16,
222 BFD_RELOC_OR1K_TLS_LE_AHI16 },
226 parse_reloc (const char **strp)
228 const char *str = *strp;
229 enum or1k_rclass cls = RCLASS_DIRECT;
232 if (strncasecmp (str, "got(", 4) == 0)
235 return (RCLASS_GOT << RCLASS_SHIFT) | RTYPE_LO;
237 if (strncasecmp (str, "gotpo(", 6) == 0)
240 return (RCLASS_GOT << RCLASS_SHIFT) | RTYPE_PO;
242 if (strncasecmp (str, "gottppo(", 8) == 0)
245 return (RCLASS_GOTTPOFF << RCLASS_SHIFT) | RTYPE_PO;
248 if (strncasecmp (str, "gotpc", 5) == 0)
253 else if (strncasecmp (str, "gotoff", 6) == 0)
258 else if (strncasecmp (str, "tlsgd", 5) == 0)
263 else if (strncasecmp (str, "tlsldm", 6) == 0)
268 else if (strncasecmp (str, "dtpoff", 6) == 0)
273 else if (strncasecmp (str, "gottpoff", 8) == 0)
276 cls = RCLASS_GOTTPOFF;
278 else if (strncasecmp (str, "tpoff", 5) == 0)
284 if (strncasecmp (str, "hi(", 3) == 0)
289 else if (strncasecmp (str, "lo(", 3) == 0)
294 else if (strncasecmp (str, "ha(", 3) == 0)
299 else if (strncasecmp (str, "po(", 3) == 0 && cls != RCLASS_GOTTPOFF)
308 return (cls << RCLASS_SHIFT) | typ;
312 parse_imm16 (CGEN_CPU_DESC cd, const char **strp, int opindex,
313 long *valuep, int splitp)
316 enum cgen_parse_operand_result result_type;
317 bfd_reloc_code_real_type reloc = BFD_RELOC_UNUSED;
318 enum or1k_rtype reloc_type;
325 reloc_code = parse_reloc (strp);
326 reloc_type = reloc_code & RTYPE_MASK;
329 enum or1k_rclass reloc_class = reloc_code >> RCLASS_SHIFT;
332 if ((reloc_type == RTYPE_LO || reloc_type == RTYPE_PO)
333 && reloc_class != RCLASS_GOT)
334 /* If split we or up the type to RTYPE_SLO or RTYPE_SPO. */
337 return INVALID_STORE_RELOC;
339 reloc = or1k_imm16_relocs[reloc_class][reloc_type];
342 if (reloc != BFD_RELOC_UNUSED)
346 errmsg = cgen_parse_address (cd, strp, opindex, reloc,
347 &result_type, &value);
349 errmsg = MISSING_CLOSING_PARENTHESIS;
354 if (errmsg == NULL && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
366 ret = (ret ^ 0x8000) - 0x8000;
373 errmsg = INVALID_RELOC_TYPE;
379 errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
390 parse_simm16 (CGEN_CPU_DESC cd, const char **strp, int opindex, long *valuep)
392 return parse_imm16(cd, strp, opindex, (long *) valuep, 0);
396 parse_simm16_split (CGEN_CPU_DESC cd, const char **strp, int opindex,
399 return parse_imm16(cd, strp, opindex, (long *) valuep, 1);
403 parse_uimm16 (CGEN_CPU_DESC cd, const char **strp, int opindex,
404 unsigned long *valuep)
406 const char *errmsg = parse_imm16(cd, strp, opindex, (long *) valuep, 0);
413 parse_uimm16_split (CGEN_CPU_DESC cd, const char **strp, int opindex,
414 unsigned long *valuep)
416 const char *errmsg = parse_imm16(cd, strp, opindex, (long *) valuep, 1);
424 const char * or1k_cgen_parse_operand
425 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
427 /* Main entry point for operand parsing.
429 This function is basically just a big switch statement. Earlier versions
430 used tables to look up the function to use, but
431 - if the table contains both assembler and disassembler functions then
432 the disassembler contains much of the assembler and vice-versa,
433 - there's a lot of inlining possibilities as things grow,
434 - using a switch statement avoids the function call overhead.
436 This function could be moved into `parse_insn_normal', but keeping it
437 separate makes clear the interface between `parse_insn_normal' and each of
441 or1k_cgen_parse_operand (CGEN_CPU_DESC cd,
444 CGEN_FIELDS * fields)
446 const char * errmsg = NULL;
447 /* Used by scalar operands that still need to be parsed. */
448 long junk ATTRIBUTE_UNUSED;
452 case OR1K_OPERAND_DISP21 :
455 errmsg = parse_disp21 (cd, strp, OR1K_OPERAND_DISP21, 0, NULL, & value);
456 fields->f_disp21 = value;
459 case OR1K_OPERAND_DISP26 :
462 errmsg = parse_disp26 (cd, strp, OR1K_OPERAND_DISP26, 0, NULL, & value);
463 fields->f_disp26 = value;
466 case OR1K_OPERAND_RA :
467 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_gpr, & fields->f_r2);
469 case OR1K_OPERAND_RADF :
470 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fdr, & fields->f_r1);
472 case OR1K_OPERAND_RASF :
473 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fsr, & fields->f_r2);
475 case OR1K_OPERAND_RB :
476 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_gpr, & fields->f_r3);
478 case OR1K_OPERAND_RBDF :
479 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fdr, & fields->f_r1);
481 case OR1K_OPERAND_RBSF :
482 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fsr, & fields->f_r3);
484 case OR1K_OPERAND_RD :
485 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_gpr, & fields->f_r1);
487 case OR1K_OPERAND_RDDF :
488 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fdr, & fields->f_r1);
490 case OR1K_OPERAND_RDSF :
491 errmsg = cgen_parse_keyword (cd, strp, & or1k_cgen_opval_h_fsr, & fields->f_r1);
493 case OR1K_OPERAND_SIMM16 :
494 errmsg = parse_simm16 (cd, strp, OR1K_OPERAND_SIMM16, (long *) (& fields->f_simm16));
496 case OR1K_OPERAND_SIMM16_SPLIT :
497 errmsg = parse_simm16_split (cd, strp, OR1K_OPERAND_SIMM16_SPLIT, (long *) (& fields->f_simm16_split));
499 case OR1K_OPERAND_UIMM16 :
500 errmsg = parse_uimm16 (cd, strp, OR1K_OPERAND_UIMM16, (unsigned long *) (& fields->f_uimm16));
502 case OR1K_OPERAND_UIMM16_SPLIT :
503 errmsg = parse_uimm16_split (cd, strp, OR1K_OPERAND_UIMM16_SPLIT, (unsigned long *) (& fields->f_uimm16_split));
505 case OR1K_OPERAND_UIMM6 :
506 errmsg = cgen_parse_unsigned_integer (cd, strp, OR1K_OPERAND_UIMM6, (unsigned long *) (& fields->f_uimm6));
510 /* xgettext:c-format */
511 opcodes_error_handler
512 (_("internal error: unrecognized field %d while parsing"),
520 cgen_parse_fn * const or1k_cgen_parse_handlers[] =
526 or1k_cgen_init_asm (CGEN_CPU_DESC cd)
528 or1k_cgen_init_opcode_table (cd);
529 or1k_cgen_init_ibld_table (cd);
530 cd->parse_handlers = & or1k_cgen_parse_handlers[0];
531 cd->parse_operand = or1k_cgen_parse_operand;
532 #ifdef CGEN_ASM_INIT_HOOK
539 /* Regex construction routine.
541 This translates an opcode syntax string into a regex string,
542 by replacing any non-character syntax element (such as an
543 opcode) with the pattern '.*'
545 It then compiles the regex and stores it in the opcode, for
546 later use by or1k_cgen_assemble_insn
548 Returns NULL for success, an error message for failure. */
551 or1k_cgen_build_insn_regex (CGEN_INSN *insn)
553 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
554 const char *mnem = CGEN_INSN_MNEMONIC (insn);
555 char rxbuf[CGEN_MAX_RX_ELEMENTS];
557 const CGEN_SYNTAX_CHAR_TYPE *syn;
560 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
562 /* Mnemonics come first in the syntax string. */
563 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
564 return _("missing mnemonic in syntax string");
567 /* Generate a case sensitive regular expression that emulates case
568 insensitive matching in the "C" locale. We cannot generate a case
569 insensitive regular expression because in Turkish locales, 'i' and 'I'
570 are not equal modulo case conversion. */
572 /* Copy the literal mnemonic out of the insn. */
573 for (; *mnem; mnem++)
588 /* Copy any remaining literals from the syntax string into the rx. */
589 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
591 if (CGEN_SYNTAX_CHAR_P (* syn))
593 char c = CGEN_SYNTAX_CHAR (* syn);
597 /* Escape any regex metacharacters in the syntax. */
598 case '.': case '[': case '\\':
599 case '*': case '^': case '$':
601 #ifdef CGEN_ESCAPE_EXTENDED_REGEX
602 case '?': case '{': case '}':
603 case '(': case ')': case '*':
604 case '|': case '+': case ']':
625 /* Replace non-syntax fields with globs. */
631 /* Trailing whitespace ok. */
638 /* But anchor it after that. */
642 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
643 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
651 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
652 regfree ((regex_t *) CGEN_INSN_RX (insn));
653 free (CGEN_INSN_RX (insn));
654 (CGEN_INSN_RX (insn)) = NULL;
660 /* Default insn parser.
662 The syntax string is scanned and operands are parsed and stored in FIELDS.
663 Relocs are queued as we go via other callbacks.
665 ??? Note that this is currently an all-or-nothing parser. If we fail to
666 parse the instruction, we return 0 and the caller will start over from
667 the beginning. Backtracking will be necessary in parsing subexpressions,
668 but that can be handled there. Not handling backtracking here may get
669 expensive in the case of the m68k. Deal with later.
671 Returns NULL for success, an error message for failure. */
674 parse_insn_normal (CGEN_CPU_DESC cd,
675 const CGEN_INSN *insn,
679 /* ??? Runtime added insns not handled yet. */
680 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
681 const char *str = *strp;
684 const CGEN_SYNTAX_CHAR_TYPE * syn;
685 #ifdef CGEN_MNEMONIC_OPERANDS
690 /* For now we assume the mnemonic is first (there are no leading operands).
691 We can parse it without needing to set up operand parsing.
692 GAS's input scrubber will ensure mnemonics are lowercase, but we may
693 not be called from GAS. */
694 p = CGEN_INSN_MNEMONIC (insn);
695 while (*p && TOLOWER (*p) == TOLOWER (*str))
699 return _("unrecognized instruction");
701 #ifndef CGEN_MNEMONIC_OPERANDS
702 if (* str && ! ISSPACE (* str))
703 return _("unrecognized instruction");
706 CGEN_INIT_PARSE (cd);
707 cgen_init_parse_operand (cd);
708 #ifdef CGEN_MNEMONIC_OPERANDS
712 /* We don't check for (*str != '\0') here because we want to parse
713 any trailing fake arguments in the syntax string. */
714 syn = CGEN_SYNTAX_STRING (syntax);
716 /* Mnemonics come first for now, ensure valid string. */
717 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
724 /* Non operand chars must match exactly. */
725 if (CGEN_SYNTAX_CHAR_P (* syn))
727 /* FIXME: While we allow for non-GAS callers above, we assume the
728 first char after the mnemonic part is a space. */
729 /* FIXME: We also take inappropriate advantage of the fact that
730 GAS's input scrubber will remove extraneous blanks. */
731 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
733 #ifdef CGEN_MNEMONIC_OPERANDS
734 if (CGEN_SYNTAX_CHAR(* syn) == ' ')
742 /* Syntax char didn't match. Can't be this insn. */
743 static char msg [80];
745 /* xgettext:c-format */
746 sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
747 CGEN_SYNTAX_CHAR(*syn), *str);
752 /* Ran out of input. */
753 static char msg [80];
755 /* xgettext:c-format */
756 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
757 CGEN_SYNTAX_CHAR(*syn));
763 #ifdef CGEN_MNEMONIC_OPERANDS
764 (void) past_opcode_p;
766 /* We have an operand of some sort. */
767 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields);
771 /* Done with this operand, continue with next one. */
775 /* If we're at the end of the syntax string, we're done. */
778 /* FIXME: For the moment we assume a valid `str' can only contain
779 blanks now. IE: We needn't try again with a longer version of
780 the insn and it is assumed that longer versions of insns appear
781 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
782 while (ISSPACE (* str))
786 return _("junk at end of line"); /* FIXME: would like to include `str' */
791 /* We couldn't parse it. */
792 return _("unrecognized instruction");
796 This routine is called for each instruction to be assembled.
797 STR points to the insn to be assembled.
798 We assume all necessary tables have been initialized.
799 The assembled instruction, less any fixups, is stored in BUF.
800 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
801 still needs to be converted to target byte order, otherwise BUF is an array
802 of bytes in target byte order.
803 The result is a pointer to the insn's entry in the opcode table,
804 or NULL if an error occured (an error message will have already been
807 Note that when processing (non-alias) macro-insns,
808 this function recurses.
810 ??? It's possible to make this cpu-independent.
811 One would have to deal with a few minor things.
812 At this point in time doing so would be more of a curiosity than useful
813 [for example this file isn't _that_ big], but keeping the possibility in
814 mind helps keep the design clean. */
817 or1k_cgen_assemble_insn (CGEN_CPU_DESC cd,
820 CGEN_INSN_BYTES_PTR buf,
824 CGEN_INSN_LIST *ilist;
825 const char *parse_errmsg = NULL;
826 const char *insert_errmsg = NULL;
827 int recognized_mnemonic = 0;
829 /* Skip leading white space. */
830 while (ISSPACE (* str))
833 /* The instructions are stored in hashed lists.
834 Get the first in the list. */
835 ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
837 /* Keep looking until we find a match. */
839 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
841 const CGEN_INSN *insn = ilist->insn;
842 recognized_mnemonic = 1;
844 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
845 /* Not usually needed as unsupported opcodes
846 shouldn't be in the hash lists. */
847 /* Is this insn supported by the selected cpu? */
848 if (! or1k_cgen_insn_supported (cd, insn))
851 /* If the RELAXED attribute is set, this is an insn that shouldn't be
852 chosen immediately. Instead, it is used during assembler/linker
853 relaxation if possible. */
854 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
859 /* Skip this insn if str doesn't look right lexically. */
860 if (CGEN_INSN_RX (insn) != NULL &&
861 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
864 /* Allow parse/insert handlers to obtain length of insn. */
865 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
867 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
868 if (parse_errmsg != NULL)
871 /* ??? 0 is passed for `pc'. */
872 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
874 if (insert_errmsg != NULL)
877 /* It is up to the caller to actually output the insn and any
883 static char errbuf[150];
884 const char *tmp_errmsg;
885 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
893 /* If requesting verbose error messages, use insert_errmsg.
894 Failing that, use parse_errmsg. */
895 tmp_errmsg = (insert_errmsg ? insert_errmsg :
896 parse_errmsg ? parse_errmsg :
897 recognized_mnemonic ?
898 _("unrecognized form of instruction") :
899 _("unrecognized instruction"));
901 if (strlen (start) > 50)
902 /* xgettext:c-format */
903 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
905 /* xgettext:c-format */
906 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
910 if (strlen (start) > 50)
911 /* xgettext:c-format */
912 sprintf (errbuf, _("bad instruction `%.50s...'"), start);
914 /* xgettext:c-format */
915 sprintf (errbuf, _("bad instruction `%.50s'"), start);