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.
Keep that in mind. */
#include "sysdep.h"
-#include <ctype.h>
#include <stdio.h>
#include "ansidecl.h"
#include "bfd.h"
#include "fr30-desc.h"
#include "fr30-opc.h"
#include "opintl.h"
+#include "xregex.h"
+#include "libiberty.h"
+#include "safe-ctype.h"
-#undef min
+#undef min
#define min(a,b) ((a) < (b) ? (a) : (b))
-#undef max
+#undef max
#define max(a,b) ((a) > (b) ? (a) : (b))
static const char * parse_insn_normal
- PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *));
+ (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
\f
-/* -- assembler routines inserted here */
+/* -- assembler routines inserted here. */
/* -- asm.c */
-/* Handle register lists for LDMx and STMx */
+/* Handle register lists for LDMx and STMx. */
+
+static int parse_register_number
+ PARAMS ((const char **));
+static const char * parse_register_list
+ PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *, int, int));
+static const char * parse_low_register_list_ld
+ PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
+static const char * parse_hi_register_list_ld
+ PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
+static const char * parse_low_register_list_st
+ PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
+static const char * parse_hi_register_list_st
+ PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
static int
parse_register_number (strp)
{
int regno;
if (**strp < '0' || **strp > '9')
- return -1; /* error */
+ return -1; /* error. */
regno = **strp - '0';
++*strp;
static const char *
parse_register_list (cd, strp, opindex, valuep, high_low, load_store)
- CGEN_CPU_DESC cd;
+ CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
const char **strp;
- int opindex;
+ int opindex ATTRIBUTE_UNUSED;
unsigned long *valuep;
int high_low; /* 0 == high, 1 == low */
int load_store; /* 0 == load, 1 == store */
{
int regno;
+
*valuep = 0;
while (**strp && **strp != ')')
{
if (high_low)
regno -= 8;
- if (load_store) /* mask is reversed for store */
+ if (load_store) /* Mask is reversed for store. */
*valuep |= 0x80 >> regno;
else
*valuep |= 1 << regno;
/* -- */
+const char * fr30_cgen_parse_operand
+ PARAMS ((CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *));
+
/* Main entry point for operand parsing.
This function is basically just a big switch statement. Earlier versions
This function could be moved into `parse_insn_normal', but keeping it
separate makes clear the interface between `parse_insn_normal' and each of
- the handlers.
-*/
+ the handlers. */
const char *
fr30_cgen_parse_operand (cd, opindex, strp, fields)
{
const char * errmsg = NULL;
/* Used by scalar operands that still need to be parsed. */
- long junk;
+ long junk ATTRIBUTE_UNUSED;
switch (opindex)
{
cd->parse_operand = fr30_cgen_parse_operand;
}
+\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 fr30_cgen_assemble_insn
+
+ Returns NULL for success, an error message for failure. */
+
+char *
+fr30_cgen_build_insn_regex (CGEN_INSN *insn)
+{
+ CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
+ const char *mnem = CGEN_INSN_MNEMONIC (insn);
+ 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;
+
+ /* Generate a case sensitive regular expression that emulates case
+ insensitive matching in the "C" locale. We cannot generate a case
+ insensitive regular expression because in Turkish locales, 'i' and 'I'
+ are not equal modulo case conversion. */
+
+ /* Copy the literal mnemonic out of the insn. */
+ for (; *mnem; mnem++)
+ {
+ char c = *mnem;
+
+ if (ISALPHA (c))
+ {
+ *rx++ = '[';
+ *rx++ = TOLOWER (c);
+ *rx++ = TOUPPER (c);
+ *rx++ = ']';
+ }
+ else
+ *rx++ = c;
+ }
+
+ /* Copy any remaining literals from the syntax string into the rx. */
+ for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
+ {
+ if (CGEN_SYNTAX_CHAR_P (* syn))
+ {
+ char c = CGEN_SYNTAX_CHAR (* syn);
+
+ switch (c)
+ {
+ /* Escape any regex metacharacters in the syntax. */
+ case '.': case '[': case '\\':
+ case '*': case '^': case '$':
+
+#ifdef CGEN_ESCAPE_EXTENDED_REGEX
+ case '?': case '{': case '}':
+ case '(': case ')': case '*':
+ case '|': case '+': case ']':
+#endif
+ *rx++ = '\\';
+ *rx++ = c;
+ break;
+
+ default:
+ if (ISALPHA (c))
+ {
+ *rx++ = '[';
+ *rx++ = TOLOWER (c);
+ *rx++ = TOUPPER (c);
+ *rx++ = ']';
+ }
+ else
+ *rx++ = c;
+ break;
+ }
+ }
+ else
+ {
+ /* Replace non-syntax fields with globs. */
+ *rx++ = '.';
+ *rx++ = '*';
+ }
+ }
+
+ /* Trailing whitespace ok. */
+ * rx++ = '[';
+ * rx++ = ' ';
+ * rx++ = '\t';
+ * rx++ = ']';
+ * rx++ = '*';
+
+ /* But anchor it after that. */
+ * rx++ = '$';
+ * rx = '\0';
+
+ CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
+ reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
+
+ 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.
but that can be handled there. Not handling backtracking here may get
expensive in the case of the m68k. Deal with later.
- Returns NULL for success, an error message for failure.
-*/
+ Returns NULL for success, an error message for failure. */
static const char *
-parse_insn_normal (cd, insn, strp, fields)
- CGEN_CPU_DESC cd;
- const CGEN_INSN *insn;
- const char **strp;
- CGEN_FIELDS *fields;
+parse_insn_normal (CGEN_CPU_DESC cd,
+ const CGEN_INSN *insn,
+ const char **strp,
+ CGEN_FIELDS *fields)
{
/* ??? Runtime added insns not handled yet. */
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
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;
GAS's input scrubber will ensure mnemonics are lowercase, but we may
not be called from GAS. */
p = CGEN_INSN_MNEMONIC (insn);
- while (*p && tolower (*p) == tolower (*str))
+ while (*p && TOLOWER (*p) == TOLOWER (*str))
++p, ++str;
-
- if (* p || (* str && !isspace (* str)))
+
+ if (* p)
return _("unrecognized instruction");
+#ifndef CGEN_MNEMONIC_OPERANDS
+ if (* str && ! ISSPACE (* str))
+ return _("unrecognized instruction");
+#endif
+
CGEN_INIT_PARSE (cd);
cgen_init_parse_operand (cd);
#ifdef CGEN_MNEMONIC_OPERANDS
/* Non operand chars must match exactly. */
if (CGEN_SYNTAX_CHAR_P (* syn))
{
- if (*str == CGEN_SYNTAX_CHAR (* syn))
+ /* FIXME: While we allow for non-GAS callers above, we assume the
+ first char after the mnemonic part is a space. */
+ /* FIXME: We also take inappropriate advantage of the fact that
+ GAS's input scrubber will remove extraneous blanks. */
+ 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. */
- /* FIXME: would like to return something like
- "expected char `c'" */
- return _("syntax error");
+ static char msg [80];
+
+ /* xgettext:c-format */
+ sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
+ 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;
}
/* We have an operand of some sort. */
- errmsg = fr30_cgen_parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
+ errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
&str, fields);
if (errmsg)
return errmsg;
}
/* 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
the insn and it is assumed that longer versions of insns appear
before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
- while (isspace (* str))
+ while (ISSPACE (* str))
++ str;
if (* str != '\0')
mind helps keep the design clean. */
const CGEN_INSN *
-fr30_cgen_assemble_insn (cd, str, fields, buf, errmsg)
- CGEN_CPU_DESC cd;
- const char *str;
- CGEN_FIELDS *fields;
- CGEN_INSN_BYTES_PTR buf;
- char **errmsg;
+fr30_cgen_assemble_insn (CGEN_CPU_DESC cd,
+ const char *str,
+ CGEN_FIELDS *fields,
+ CGEN_INSN_BYTES_PTR buf,
+ char **errmsg)
{
const char *start;
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))
+ while (ISSPACE (* str))
++ str;
/* The instructions are stored in hashed lists.
ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
/* Keep looking until we find a match. */
-
start = str;
for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
{
const CGEN_INSN *insn = ilist->insn;
+ recognized_mnemonic = 1;
-#if 0 /* not needed as unsupported opcodes shouldn't be in the hash lists */
+#ifdef CGEN_VALIDATE_INSN_SUPPORTED
+ /* Not usually needed as unsupported opcodes
+ shouldn't be in the hash lists. */
/* Is this insn supported by the selected cpu? */
if (! fr30_cgen_insn_supported (cd, insn))
continue;
#endif
-
- /* If the RELAX attribute is set, this is an insn that shouldn't be
+ /* If the RELAXED attribute is set, this is an insn that shouldn't be
chosen immediately. Instead, it is used during assembler/linker
relaxation if possible. */
- if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAX) != 0)
+ if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
continue;
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);
- if (! CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields))
- {
- /* ??? 0 is passed for `pc' */
- if (CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, (bfd_vma) 0)
- != NULL)
- continue;
- /* It is up to the caller to actually output the insn and any
- queued relocs. */
- return insn;
- }
+ parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
+ if (parse_errmsg != NULL)
+ continue;
+
+ /* ??? 0 is passed for `pc'. */
+ insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
+ (bfd_vma) 0);
+ if (insert_errmsg != NULL)
+ continue;
- /* Try the next entry. */
+ /* It is up to the caller to actually output the insn and any
+ queued relocs. */
+ return insn;
}
- /* FIXME: We can return a better error message than this.
- Need to track why it failed and pick the right one. */
{
- static char errbuf[100];
+ static char errbuf[150];
+#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
+ const char *tmp_errmsg;
+
+ /* 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)
+ /* xgettext:c-format */
+ sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
+ else
+ /* xgettext:c-format */
+ sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
+#else
if (strlen (start) > 50)
/* xgettext:c-format */
sprintf (errbuf, _("bad instruction `%.50s...'"), start);
else
/* xgettext:c-format */
sprintf (errbuf, _("bad instruction `%.50s'"), start);
+#endif
*errmsg = errbuf;
return NULL;
FIXME: Not currently used. */
void
-fr30_cgen_asm_hash_keywords (cd, opvals)
- CGEN_CPU_DESC cd;
- CGEN_KEYWORD *opvals;
+fr30_cgen_asm_hash_keywords (CGEN_CPU_DESC cd, CGEN_KEYWORD *opvals)
{
CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL);
const CGEN_KEYWORD_ENTRY * ke;
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