THIS FILE IS MACHINE GENERATED WITH CGEN.
- the resultant file is machine generated, cgen-asm.in isn't
-Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU Binutils and GDB, the GNU debugger.
#include "@prefix@-desc.h"
#include "@prefix@-opc.h"
#include "opintl.h"
+#include "xregex.h"
#undef min
#define min(a,b) ((a) < (b) ? (a) : (b))
PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *));
\f
/* -- assembler routines inserted here */
+\f
+
+/*
+ Regex construction routine.
+
+ This translates an opcode syntax string into a regex string,
+ by replacing any non-character syntax element (such as an
+ opcode) with the pattern '.*'
+
+ It then compiles the regex and stores it in the opcode, for
+ later use by @arch@_cgen_assemble_insn
+
+ returns NULL for success, an error message for failure
+*/
+
+char *
+@arch@_cgen_build_insn_regex (insn)
+ CGEN_INSN *insn;
+{
+ CGEN_OPCODE *opc = CGEN_INSN_OPCODE (insn);
+ const char *mnem = CGEN_INSN_MNEMONIC (insn);
+ int mnem_len;
+ char rxbuf[CGEN_MAX_RX_ELEMENTS];
+ char *rx = rxbuf;
+ const CGEN_SYNTAX_CHAR_TYPE *syn;
+ int reg_err;
+
+ syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
+
+ /* Mnemonics come first in the syntax string */
+ if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) return "missing mnemonic in syntax string";
+ ++syn;
+
+ /* copy the literal mnemonic out of the insn */
+ memset (rx, 0, CGEN_MAX_RX_ELEMENTS);
+ mnem_len = strlen(mnem);
+ memcpy (rx, mnem, mnem_len);
+ rx += mnem_len;
+
+ /* copy any remaining literals from the syntax string into the rx */
+ for(; * syn != 0 && rx < rxbuf + (CGEN_MAX_RX_ELEMENTS - 9); ++syn, ++rx)
+ {
+ if (CGEN_SYNTAX_CHAR_P (* syn))
+ {
+ char tmp = CGEN_SYNTAX_CHAR (* syn);
+ switch (tmp)
+ {
+ /* escape any regex metacharacters in the syntax */
+ case '.': case '[': case '\\':
+ case '*': case '^': case '$':
+
+#ifdef CGEN_ESCAPE_EXTENDED_REGEX
+ case '?': case '{': case '}':
+ case '(': case ')': case '*':
+ case '|': case '+': case ']':
+#endif
+
+ * rx++ = '\\';
+ break;
+ }
+ /* insert syntax char into rx */
+ * rx = tmp;
+ }
+ else
+ {
+ /* replace non-syntax fields with globs */
+ * rx = '.';
+ * ++rx = '*';
+ }
+ }
+
+ /* trailing whitespace ok */
+ * rx++ = '[';
+ * rx++ = ' ';
+ * rx++ = '\t';
+ * rx++ = ']';
+ * rx++ = '*';
+
+ /* but anchor it after that */
+ * rx++ = '$';
+ * rx = '\0';
+
+ CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
+ reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB|REG_ICASE);
+
+ if (reg_err == 0)
+ return NULL;
+ else
+ {
+ static char msg[80];
+ regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
+ regfree ((regex_t *) CGEN_INSN_RX (insn));
+ free (CGEN_INSN_RX (insn));
+ (CGEN_INSN_RX (insn)) = NULL;
+ return msg;
+ }
+}
+
\f
/* Default insn parser.
const char *str = *strp;
const char *errmsg;
const char *p;
- const unsigned char * syn;
+ const CGEN_SYNTAX_CHAR_TYPE * syn;
#ifdef CGEN_MNEMONIC_OPERANDS
/* FIXME: wip */
int past_opcode_p;
if (tolower (*str) == tolower (CGEN_SYNTAX_CHAR (* syn)))
{
#ifdef CGEN_MNEMONIC_OPERANDS
- if (* syn == ' ')
+ if (CGEN_SYNTAX_CHAR(* syn) == ' ')
past_opcode_p = 1;
#endif
++ syn;
++ str;
}
- else
+ else if (*str)
{
/* Syntax char didn't match. Can't be this insn. */
static char msg [80];
/* xgettext:c-format */
sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
- *syn, *str);
+ CGEN_SYNTAX_CHAR(*syn), *str);
+ return msg;
+ }
+ else
+ {
+ /* Ran out of input. */
+ static char msg [80];
+ /* xgettext:c-format */
+ sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
+ CGEN_SYNTAX_CHAR(*syn));
return msg;
}
continue;
}
/* If we're at the end of the syntax string, we're done. */
- if (* syn == '\0')
+ if (* syn == 0)
{
/* FIXME: For the moment we assume a valid `str' can only contain
blanks now. IE: We needn't try again with a longer version of
CGEN_INSN_LIST *ilist;
const char *parse_errmsg = NULL;
const char *insert_errmsg = NULL;
+ int recognized_mnemonic = 0;
/* Skip leading white space. */
while (isspace (* str))
for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
{
const CGEN_INSN *insn = ilist->insn;
+ recognized_mnemonic = 1;
#ifdef CGEN_VALIDATE_INSN_SUPPORTED
/* not usually needed as unsupported opcodes shouldn't be in the hash lists */
str = start;
+ /* skip this insn if str doesn't look right lexically */
+ if (CGEN_INSN_RX (insn) != NULL &&
+ regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
+ continue;
+
/* Allow parse/insert handlers to obtain length of insn. */
CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
{
static char errbuf[150];
+#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
const char *tmp_errmsg;
-#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
/* If requesting verbose error messages, use insert_errmsg.
Failing that, use parse_errmsg */
tmp_errmsg = (insert_errmsg ? insert_errmsg :
parse_errmsg ? parse_errmsg :
+ recognized_mnemonic ? _("unrecognized form of instruction") :
_("unrecognized instruction"));
if (strlen (start) > 50)
projects / deliverable / binutils-gdb.git / blobdiff