work around locale problems for case insensitivity
This commit is contained in:
Nick Clifton
parent
6478892d2e
commit
f3a55c17eb
5 changed files with 296 additions and 160 deletions
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@ -276,7 +276,7 @@ openrisc_cgen_init_asm (cd)
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It then compiles the regex and stores it in the opcode, for
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later use by openrisc_cgen_assemble_insn
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Returns NULL for success, an error message for failure. */
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Returns NULL for success, an error message for failure. */
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char *
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openrisc_cgen_build_insn_regex (insn)
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@ -292,67 +292,98 @@ openrisc_cgen_build_insn_regex (insn)
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syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
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/* Mnemonics come first in the syntax string */
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if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) return "missing mnemonic in syntax string";
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/* Mnemonics come first in the syntax string. */
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if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
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return _("missing mnemonic in syntax string");
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++syn;
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/* copy the literal mnemonic out of the insn */
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memset (rx, 0, CGEN_MAX_RX_ELEMENTS);
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mnem_len = strlen(mnem);
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memcpy (rx, mnem, mnem_len);
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rx += mnem_len;
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/* Generate a case sensitive regular expression that emulates case
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insensitive matching in the "C" locale. We cannot generate a case
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insensitive regular expression because in Turkish locales, 'i' and 'I'
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are not equal modulo case conversion. */
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/* copy any remaining literals from the syntax string into the rx */
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for(; * syn != 0 && rx < rxbuf + (CGEN_MAX_RX_ELEMENTS - 9); ++syn, ++rx)
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/* Copy the literal mnemonic out of the insn. */
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for (; *mnem; mnem++)
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{
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char c = *mnem;
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if (ISALPHA (c))
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{
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*rx++ = '[';
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*rx++ = TOLOWER (c);
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*rx++ = TOUPPER (c);
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*rx++ = ']';
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}
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else
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*rx++ = c;
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}
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/* Copy any remaining literals from the syntax string into the rx. */
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for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
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{
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if (CGEN_SYNTAX_CHAR_P (* syn))
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{
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char tmp = CGEN_SYNTAX_CHAR (* syn);
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switch (tmp)
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{
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/* escape any regex metacharacters in the syntax */
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case '.': case '[': case '\\':
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case '*': case '^': case '$':
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char c = CGEN_SYNTAX_CHAR (* syn);
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switch (c)
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{
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/* Escape any regex metacharacters in the syntax. */
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case '.': case '[': case '\\':
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case '*': case '^': case '$':
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#ifdef CGEN_ESCAPE_EXTENDED_REGEX
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case '?': case '{': case '}':
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case '(': case ')': case '*':
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case '|': case '+': case ']':
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case '?': case '{': case '}':
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case '(': case ')': case '*':
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case '|': case '+': case ']':
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#endif
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*rx++ = '\\';
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*rx++ = c;
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break;
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* rx++ = '\\';
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break;
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}
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/* insert syntax char into rx */
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* rx = tmp;
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default:
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if (ISALPHA (c))
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{
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*rx++ = '[';
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*rx++ = TOLOWER (c);
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*rx++ = TOUPPER (c);
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*rx++ = ']';
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}
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else
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*rx++ = c;
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break;
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}
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/* Insert syntax char into rx. */
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*rx++ = c;
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}
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else
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{
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/* replace non-syntax fields with globs */
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* rx = '.';
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* ++rx = '*';
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/* Replace non-syntax fields with globs. */
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*rx++ = '.';
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*rx++ = '*';
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}
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}
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/* trailing whitespace ok */
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/* Trailing whitespace ok. */
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* rx++ = '[';
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* rx++ = ' ';
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* rx++ = '\t';
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* rx++ = ']';
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* rx++ = '*';
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/* but anchor it after that */
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/* But anchor it after that. */
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* rx++ = '$';
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* rx = '\0';
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CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
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reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB|REG_ICASE);
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reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
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if (reg_err == 0)
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return NULL;
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else
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{
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static char msg[80];
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regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
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regfree ((regex_t *) CGEN_INSN_RX (insn));
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free (CGEN_INSN_RX (insn));
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@ -373,8 +404,7 @@ openrisc_cgen_build_insn_regex (insn)
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but that can be handled there. Not handling backtracking here may get
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expensive in the case of the m68k. Deal with later.
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Returns NULL for success, an error message for failure.
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*/
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Returns NULL for success, an error message for failure. */
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static const char *
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parse_insn_normal (cd, insn, strp, fields)
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@ -448,6 +478,7 @@ parse_insn_normal (cd, insn, strp, fields)
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{
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/* Syntax char didn't match. Can't be this insn. */
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static char msg [80];
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/* xgettext:c-format */
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sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
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CGEN_SYNTAX_CHAR(*syn), *str);
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@ -457,6 +488,7 @@ parse_insn_normal (cd, insn, strp, fields)
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{
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/* Ran out of input. */
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static char msg [80];
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/* xgettext:c-format */
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sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
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CGEN_SYNTAX_CHAR(*syn));
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@ -539,7 +571,6 @@ openrisc_cgen_assemble_insn (cd, str, fields, buf, errmsg)
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ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
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/* Keep looking until we find a match. */
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start = str;
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for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
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{
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@ -547,12 +578,12 @@ openrisc_cgen_assemble_insn (cd, str, fields, buf, errmsg)
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recognized_mnemonic = 1;
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#ifdef CGEN_VALIDATE_INSN_SUPPORTED
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/* not usually needed as unsupported opcodes shouldn't be in the hash lists */
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/* Not usually needed as unsupported opcodes
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shouldn't be in the hash lists. */
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/* Is this insn supported by the selected cpu? */
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if (! openrisc_cgen_insn_supported (cd, insn))
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continue;
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#endif
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/* If the RELAX attribute is set, this is an insn that shouldn't be
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chosen immediately. Instead, it is used during assembler/linker
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relaxation if possible. */
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@ -561,7 +592,7 @@ openrisc_cgen_assemble_insn (cd, str, fields, buf, errmsg)
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str = start;
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/* skip this insn if str doesn't look right lexically */
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/* Skip this insn if str doesn't look right lexically. */
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if (CGEN_INSN_RX (insn) != NULL &&
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regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
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continue;
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@ -573,7 +604,7 @@ openrisc_cgen_assemble_insn (cd, str, fields, buf, errmsg)
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if (parse_errmsg != NULL)
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continue;
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/* ??? 0 is passed for `pc' */
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/* ??? 0 is passed for `pc'. */
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insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
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(bfd_vma) 0);
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if (insert_errmsg != NULL)
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@ -590,10 +621,11 @@ openrisc_cgen_assemble_insn (cd, str, fields, buf, errmsg)
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const char *tmp_errmsg;
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/* If requesting verbose error messages, use insert_errmsg.
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Failing that, use parse_errmsg */
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Failing that, use parse_errmsg. */
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tmp_errmsg = (insert_errmsg ? insert_errmsg :
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parse_errmsg ? parse_errmsg :
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recognized_mnemonic ? _("unrecognized form of instruction") :
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recognized_mnemonic ?
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_("unrecognized form of instruction") :
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_("unrecognized instruction"));
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if (strlen (start) > 50)
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