mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 03:03:31 +08:00
bd2f2e55ad
* mep-*: New support for Toshiba Media Processor (MeP).
* Makefile.am: Add support for MeP.
* configure.in: Likewise.
* disassemble.c: Likewise.
* Makefile.in: Regenerated.
* configure: Regenerated.
1399 lines
40 KiB
C
1399 lines
40 KiB
C
/* Assembler interface for targets using CGEN. -*- C -*-
|
||
CGEN: Cpu tools GENerator
|
||
|
||
THIS FILE IS MACHINE GENERATED WITH CGEN.
|
||
- the resultant file is machine generated, cgen-asm.in isn't
|
||
|
||
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005
|
||
Free Software Foundation, Inc.
|
||
|
||
This file is part of the GNU Binutils and GDB, the GNU debugger.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2, or (at your option)
|
||
any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software Foundation, Inc.,
|
||
51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
|
||
|
||
/* ??? Eventually more and more of this stuff can go to cpu-independent files.
|
||
Keep that in mind. */
|
||
|
||
#include "sysdep.h"
|
||
#include <stdio.h>
|
||
#include "ansidecl.h"
|
||
#include "bfd.h"
|
||
#include "symcat.h"
|
||
#include "mep-desc.h"
|
||
#include "mep-opc.h"
|
||
#include "opintl.h"
|
||
#include "xregex.h"
|
||
#include "libiberty.h"
|
||
#include "safe-ctype.h"
|
||
|
||
#undef min
|
||
#define min(a,b) ((a) < (b) ? (a) : (b))
|
||
#undef max
|
||
#define max(a,b) ((a) > (b) ? (a) : (b))
|
||
|
||
static const char * parse_insn_normal
|
||
(CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
|
||
|
||
/* -- assembler routines inserted here. */
|
||
|
||
/* -- asm.c */
|
||
|
||
#define CGEN_VALIDATE_INSN_SUPPORTED
|
||
|
||
const char * parse_csrn (CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *);
|
||
const char * parse_tpreg (CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *);
|
||
const char * parse_spreg (CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *);
|
||
const char * parse_mep_align (CGEN_CPU_DESC, const char **, enum cgen_operand_type, long *);
|
||
const char * parse_mep_alignu (CGEN_CPU_DESC, const char **, enum cgen_operand_type, unsigned long *);
|
||
static const char * parse_signed16 (CGEN_CPU_DESC, const char **, int, long *);
|
||
static const char * parse_unsigned16 (CGEN_CPU_DESC, const char **, int, unsigned long *);
|
||
static const char * parse_lo16 (CGEN_CPU_DESC, const char **, int, long *, long);
|
||
static const char * parse_unsigned7 (CGEN_CPU_DESC, const char **, enum cgen_operand_type, unsigned long *);
|
||
static const char * parse_zero (CGEN_CPU_DESC, const char **, int, long *);
|
||
|
||
const char *
|
||
parse_csrn (CGEN_CPU_DESC cd, const char **strp,
|
||
CGEN_KEYWORD *keyword_table, long *field)
|
||
{
|
||
const char *err;
|
||
unsigned long value;
|
||
|
||
err = cgen_parse_keyword (cd, strp, keyword_table, field);
|
||
if (!err)
|
||
return NULL;
|
||
|
||
err = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CSRN_IDX, & value);
|
||
if (err)
|
||
return err;
|
||
*field = value;
|
||
return NULL;
|
||
}
|
||
|
||
/* begin-cop-ip-parse-handlers */
|
||
static const char *
|
||
parse_fmax_cr (CGEN_CPU_DESC cd,
|
||
const char **strp,
|
||
CGEN_KEYWORD *keyword_table ATTRIBUTE_UNUSED,
|
||
long *field)
|
||
{
|
||
return cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr_fmax, field);
|
||
}
|
||
static const char *
|
||
parse_fmax_ccr (CGEN_CPU_DESC cd,
|
||
const char **strp,
|
||
CGEN_KEYWORD *keyword_table ATTRIBUTE_UNUSED,
|
||
long *field)
|
||
{
|
||
return cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_fmax, field);
|
||
}
|
||
/* end-cop-ip-parse-handlers */
|
||
|
||
const char *
|
||
parse_tpreg (CGEN_CPU_DESC cd, const char ** strp,
|
||
CGEN_KEYWORD *keyword_table, long *field)
|
||
{
|
||
const char *err;
|
||
|
||
err = cgen_parse_keyword (cd, strp, keyword_table, field);
|
||
if (err)
|
||
return err;
|
||
if (*field != 13)
|
||
return _("Only $tp or $13 allowed for this opcode");
|
||
return NULL;
|
||
}
|
||
|
||
const char *
|
||
parse_spreg (CGEN_CPU_DESC cd, const char ** strp,
|
||
CGEN_KEYWORD *keyword_table, long *field)
|
||
{
|
||
const char *err;
|
||
|
||
err = cgen_parse_keyword (cd, strp, keyword_table, field);
|
||
if (err)
|
||
return err;
|
||
if (*field != 15)
|
||
return _("Only $sp or $15 allowed for this opcode");
|
||
return NULL;
|
||
}
|
||
|
||
const char *
|
||
parse_mep_align (CGEN_CPU_DESC cd, const char ** strp,
|
||
enum cgen_operand_type type, long *field)
|
||
{
|
||
long lsbs = 0;
|
||
const char *err;
|
||
|
||
switch (type)
|
||
{
|
||
case MEP_OPERAND_PCREL8A2:
|
||
case MEP_OPERAND_PCREL12A2:
|
||
case MEP_OPERAND_PCREL17A2:
|
||
case MEP_OPERAND_PCREL24A2:
|
||
case MEP_OPERAND_CDISP8A2:
|
||
case MEP_OPERAND_CDISP8A4:
|
||
case MEP_OPERAND_CDISP8A8:
|
||
err = cgen_parse_signed_integer (cd, strp, type, field);
|
||
break;
|
||
case MEP_OPERAND_PCABS24A2:
|
||
case MEP_OPERAND_UDISP7:
|
||
case MEP_OPERAND_UDISP7A2:
|
||
case MEP_OPERAND_UDISP7A4:
|
||
case MEP_OPERAND_UIMM7A4:
|
||
case MEP_OPERAND_ADDR24A4:
|
||
err = cgen_parse_unsigned_integer (cd, strp, type, (unsigned long *) field);
|
||
break;
|
||
default:
|
||
abort();
|
||
}
|
||
if (err)
|
||
return err;
|
||
switch (type)
|
||
{
|
||
case MEP_OPERAND_UDISP7:
|
||
lsbs = 0;
|
||
break;
|
||
case MEP_OPERAND_PCREL8A2:
|
||
case MEP_OPERAND_PCREL12A2:
|
||
case MEP_OPERAND_PCREL17A2:
|
||
case MEP_OPERAND_PCREL24A2:
|
||
case MEP_OPERAND_PCABS24A2:
|
||
case MEP_OPERAND_UDISP7A2:
|
||
case MEP_OPERAND_CDISP8A2:
|
||
lsbs = *field & 1;
|
||
break;
|
||
case MEP_OPERAND_UDISP7A4:
|
||
case MEP_OPERAND_UIMM7A4:
|
||
case MEP_OPERAND_ADDR24A4:
|
||
case MEP_OPERAND_CDISP8A4:
|
||
lsbs = *field & 3;
|
||
break;
|
||
case MEP_OPERAND_CDISP8A8:
|
||
lsbs = *field & 7;
|
||
break;
|
||
default:
|
||
/* Safe assumption? */
|
||
abort ();
|
||
}
|
||
if (lsbs)
|
||
return "Value is not aligned enough";
|
||
return NULL;
|
||
}
|
||
|
||
const char *
|
||
parse_mep_alignu (CGEN_CPU_DESC cd, const char ** strp,
|
||
enum cgen_operand_type type, unsigned long *field)
|
||
{
|
||
return parse_mep_align (cd, strp, type, (long *) field);
|
||
}
|
||
|
||
|
||
/* Handle %lo(), %tpoff(), %sdaoff(), %hi(), and other signed
|
||
constants in a signed context. */
|
||
|
||
static const char *
|
||
parse_signed16 (CGEN_CPU_DESC cd,
|
||
const char **strp,
|
||
int opindex,
|
||
long *valuep)
|
||
{
|
||
return parse_lo16 (cd, strp, opindex, valuep, 1);
|
||
}
|
||
|
||
static const char *
|
||
parse_lo16 (CGEN_CPU_DESC cd,
|
||
const char **strp,
|
||
int opindex,
|
||
long *valuep,
|
||
long signedp)
|
||
{
|
||
const char *errmsg;
|
||
enum cgen_parse_operand_result result_type;
|
||
bfd_vma value;
|
||
|
||
if (strncasecmp (*strp, "%lo(", 4) == 0)
|
||
{
|
||
*strp += 4;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_LOW16,
|
||
& result_type, & value);
|
||
if (**strp != ')')
|
||
return _("missing `)'");
|
||
++*strp;
|
||
if (errmsg == NULL
|
||
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
|
||
value &= 0xffff;
|
||
if (signedp)
|
||
*valuep = (long)(short) value;
|
||
else
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (strncasecmp (*strp, "%hi(", 4) == 0)
|
||
{
|
||
*strp += 4;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16S,
|
||
& result_type, & value);
|
||
if (**strp != ')')
|
||
return _("missing `)'");
|
||
++*strp;
|
||
if (errmsg == NULL
|
||
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
|
||
value = (value + 0x8000) >> 16;
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (strncasecmp (*strp, "%uhi(", 5) == 0)
|
||
{
|
||
*strp += 5;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16U,
|
||
& result_type, & value);
|
||
if (**strp != ')')
|
||
return _("missing `)'");
|
||
++*strp;
|
||
if (errmsg == NULL
|
||
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
|
||
value = value >> 16;
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (strncasecmp (*strp, "%sdaoff(", 8) == 0)
|
||
{
|
||
*strp += 8;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_GPREL,
|
||
NULL, & value);
|
||
if (**strp != ')')
|
||
return _("missing `)'");
|
||
++*strp;
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (strncasecmp (*strp, "%tpoff(", 7) == 0)
|
||
{
|
||
*strp += 7;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_TPREL,
|
||
NULL, & value);
|
||
if (**strp != ')')
|
||
return _("missing `)'");
|
||
++*strp;
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (**strp == '%')
|
||
return _("invalid %function() here");
|
||
|
||
return cgen_parse_signed_integer (cd, strp, opindex, valuep);
|
||
}
|
||
|
||
static const char *
|
||
parse_unsigned16 (CGEN_CPU_DESC cd,
|
||
const char **strp,
|
||
int opindex,
|
||
unsigned long *valuep)
|
||
{
|
||
return parse_lo16 (cd, strp, opindex, (long *) valuep, 0);
|
||
}
|
||
|
||
/* A special case of parse_signed16 which accepts only the value zero. */
|
||
|
||
static const char *
|
||
parse_zero (CGEN_CPU_DESC cd, const char **strp, int opindex, long *valuep)
|
||
{
|
||
const char *errmsg;
|
||
enum cgen_parse_operand_result result_type;
|
||
bfd_vma value;
|
||
|
||
/*fprintf(stderr, "dj: signed parse opindex `%s'\n", *strp);*/
|
||
|
||
/* Prevent ($ry) from being attempted as an expression on 'sw $rx,($ry)'.
|
||
It will fail and cause ry to be listed as an undefined symbol in the
|
||
listing. */
|
||
if (strncmp (*strp, "($", 2) == 0)
|
||
return "not zero"; /* any string will do -- will never be seen. */
|
||
|
||
if (strncasecmp (*strp, "%lo(", 4) == 0)
|
||
{
|
||
*strp += 4;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_LOW16,
|
||
&result_type, &value);
|
||
if (**strp != ')')
|
||
return "missing `)'";
|
||
++*strp;
|
||
if (errmsg == NULL
|
||
&& (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0))
|
||
return "not zero"; /* any string will do -- will never be seen. */
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (strncasecmp (*strp, "%hi(", 4) == 0)
|
||
{
|
||
*strp += 4;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16S,
|
||
&result_type, &value);
|
||
if (**strp != ')')
|
||
return "missing `)'";
|
||
++*strp;
|
||
if (errmsg == NULL
|
||
&& (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0))
|
||
return "not zero"; /* any string will do -- will never be seen. */
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (strncasecmp (*strp, "%uhi(", 5) == 0)
|
||
{
|
||
*strp += 5;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16U,
|
||
&result_type, &value);
|
||
if (**strp != ')')
|
||
return "missing `)'";
|
||
++*strp;
|
||
if (errmsg == NULL
|
||
&& (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0))
|
||
return "not zero"; /* any string will do -- will never be seen. */
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (strncasecmp (*strp, "%sdaoff(", 8) == 0)
|
||
{
|
||
*strp += 8;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_GPREL,
|
||
&result_type, &value);
|
||
if (**strp != ')')
|
||
return "missing `)'";
|
||
++*strp;
|
||
if (errmsg == NULL
|
||
&& (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0))
|
||
return "not zero"; /* any string will do -- will never be seen. */
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (strncasecmp (*strp, "%tpoff(", 7) == 0)
|
||
{
|
||
*strp += 7;
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_TPREL,
|
||
&result_type, &value);
|
||
if (**strp != ')')
|
||
return "missing `)'";
|
||
++*strp;
|
||
if (errmsg == NULL
|
||
&& (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0))
|
||
return "not zero"; /* any string will do -- will never be seen. */
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (**strp == '%')
|
||
return "invalid %function() here";
|
||
|
||
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_NONE,
|
||
&result_type, &value);
|
||
if (errmsg == NULL
|
||
&& (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0))
|
||
return "not zero"; /* any string will do -- will never be seen. */
|
||
|
||
return errmsg;
|
||
}
|
||
|
||
static const char *
|
||
parse_unsigned7 (CGEN_CPU_DESC cd, const char **strp,
|
||
enum cgen_operand_type opindex, unsigned long *valuep)
|
||
{
|
||
const char *errmsg;
|
||
bfd_vma value;
|
||
|
||
/* fprintf(stderr, "dj: unsigned7 parse `%s'\n", *strp); */
|
||
|
||
if (strncasecmp (*strp, "%tpoff(", 7) == 0)
|
||
{
|
||
int reloc;
|
||
*strp += 7;
|
||
switch (opindex)
|
||
{
|
||
case MEP_OPERAND_UDISP7:
|
||
reloc = BFD_RELOC_MEP_TPREL7;
|
||
break;
|
||
case MEP_OPERAND_UDISP7A2:
|
||
reloc = BFD_RELOC_MEP_TPREL7A2;
|
||
break;
|
||
case MEP_OPERAND_UDISP7A4:
|
||
reloc = BFD_RELOC_MEP_TPREL7A4;
|
||
break;
|
||
default:
|
||
/* Safe assumption? */
|
||
abort ();
|
||
}
|
||
errmsg = cgen_parse_address (cd, strp, opindex, reloc,
|
||
NULL, &value);
|
||
if (**strp != ')')
|
||
return "missing `)'";
|
||
++*strp;
|
||
*valuep = value;
|
||
return errmsg;
|
||
}
|
||
|
||
if (**strp == '%')
|
||
return _("invalid %function() here");
|
||
|
||
return parse_mep_alignu (cd, strp, opindex, valuep);
|
||
}
|
||
|
||
/* BEGIN LIGHTWEIGHT MACRO PROCESSOR. */
|
||
|
||
#define MAXARGS 9
|
||
|
||
typedef struct
|
||
{
|
||
char *name;
|
||
char *expansion;
|
||
} macro;
|
||
|
||
typedef struct
|
||
{
|
||
const char *start;
|
||
int len;
|
||
} arg;
|
||
|
||
macro macros[] =
|
||
{
|
||
{ "sizeof", "(`1.end + (- `1))"},
|
||
{ "startof", "(`1 | 0)" },
|
||
{ "align4", "(`1&(~3))"},
|
||
/*{ "hi", "(((`1+0x8000)>>16) & 0xffff)" }, */
|
||
/*{ "lo", "(`1 & 0xffff)" }, */
|
||
/*{ "sdaoff", "((`1-__sdabase) & 0x7f)"}, */
|
||
/*{ "tpoff", "((`1-__tpbase) & 0x7f)"}, */
|
||
{ 0,0 }
|
||
};
|
||
|
||
static char * expand_string (const char *, int);
|
||
|
||
static const char *
|
||
mep_cgen_expand_macros_and_parse_operand
|
||
(CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
|
||
|
||
static char *
|
||
str_append (char *dest, const char *input, int len)
|
||
{
|
||
char *new_dest;
|
||
int oldlen;
|
||
|
||
if (len == 0)
|
||
return dest;
|
||
/* printf("str_append: <<%s>>, <<%s>>, %d\n", dest, input, len); */
|
||
oldlen = (dest ? strlen(dest) : 0);
|
||
new_dest = realloc (dest, oldlen + len + 1);
|
||
memset (new_dest + oldlen, 0, len + 1);
|
||
return strncat (new_dest, input, len);
|
||
}
|
||
|
||
static macro *
|
||
lookup_macro (const char *name)
|
||
{
|
||
macro *m;
|
||
|
||
for (m = macros; m->name; ++m)
|
||
if (strncmp (m->name, name, strlen(m->name)) == 0)
|
||
return m;
|
||
|
||
return 0;
|
||
}
|
||
|
||
static char *
|
||
expand_macro (arg *args, int narg, macro *mac)
|
||
{
|
||
char *result = 0, *rescanned_result = 0;
|
||
char *e = mac->expansion;
|
||
char *mark = e;
|
||
int arg = 0;
|
||
|
||
/* printf("expanding macro %s with %d args\n", mac->name, narg + 1); */
|
||
while (*e)
|
||
{
|
||
if (*e == '`' &&
|
||
(*e+1) &&
|
||
((*(e + 1) - '1') <= MAXARGS) &&
|
||
((*(e + 1) - '1') <= narg))
|
||
{
|
||
result = str_append (result, mark, e - mark);
|
||
arg = (*(e + 1) - '1');
|
||
/* printf("replacing `%d with %s\n", arg+1, args[arg].start); */
|
||
result = str_append (result, args[arg].start, args[arg].len);
|
||
++e;
|
||
mark = e+1;
|
||
}
|
||
++e;
|
||
}
|
||
|
||
if (mark != e)
|
||
result = str_append (result, mark, e - mark);
|
||
|
||
if (result)
|
||
{
|
||
rescanned_result = expand_string (result, 0);
|
||
free (result);
|
||
return rescanned_result;
|
||
}
|
||
else
|
||
return result;
|
||
}
|
||
|
||
#define IN_TEXT 0
|
||
#define IN_ARGS 1
|
||
|
||
static char *
|
||
expand_string (const char *in, int first_only)
|
||
{
|
||
int num_expansions = 0;
|
||
int depth = 0;
|
||
int narg = -1;
|
||
arg args[MAXARGS];
|
||
int state = IN_TEXT;
|
||
const char *mark = in;
|
||
macro *macro = 0;
|
||
|
||
char *expansion = 0;
|
||
char *result = 0;
|
||
|
||
while (*in)
|
||
{
|
||
switch (state)
|
||
{
|
||
case IN_TEXT:
|
||
if (*in == '%' && *(in + 1) && (!first_only || num_expansions == 0))
|
||
{
|
||
macro = lookup_macro (in + 1);
|
||
if (macro)
|
||
{
|
||
/* printf("entering state %d at '%s'...\n", state, in); */
|
||
result = str_append (result, mark, in - mark);
|
||
mark = in;
|
||
in += 1 + strlen (macro->name);
|
||
while (*in == ' ') ++in;
|
||
if (*in != '(')
|
||
{
|
||
state = IN_TEXT;
|
||
macro = 0;
|
||
}
|
||
else
|
||
{
|
||
state = IN_ARGS;
|
||
narg = 0;
|
||
args[narg].start = in + 1;
|
||
args[narg].len = 0;
|
||
mark = in + 1;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
case IN_ARGS:
|
||
if (depth == 0)
|
||
{
|
||
switch (*in)
|
||
{
|
||
case ',':
|
||
narg++;
|
||
args[narg].start = (in + 1);
|
||
args[narg].len = 0;
|
||
break;
|
||
case ')':
|
||
state = IN_TEXT;
|
||
/* printf("entering state %d at '%s'...\n", state, in); */
|
||
if (macro)
|
||
{
|
||
expansion = 0;
|
||
expansion = expand_macro (args, narg, macro);
|
||
num_expansions++;
|
||
if (expansion)
|
||
{
|
||
result = str_append (result, expansion, strlen (expansion));
|
||
free (expansion);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
result = str_append (result, mark, in - mark);
|
||
}
|
||
macro = 0;
|
||
mark = in + 1;
|
||
break;
|
||
case '(':
|
||
depth++;
|
||
default:
|
||
args[narg].len++;
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (*in == ')')
|
||
depth--;
|
||
if (narg > -1)
|
||
args[narg].len++;
|
||
}
|
||
|
||
}
|
||
++in;
|
||
}
|
||
|
||
if (mark != in)
|
||
result = str_append (result, mark, in - mark);
|
||
|
||
return result;
|
||
}
|
||
|
||
#undef IN_ARGS
|
||
#undef IN_TEXT
|
||
#undef MAXARGS
|
||
|
||
|
||
/* END LIGHTWEIGHT MACRO PROCESSOR. */
|
||
|
||
const char * mep_cgen_parse_operand
|
||
(CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
|
||
|
||
const char *
|
||
mep_cgen_expand_macros_and_parse_operand (CGEN_CPU_DESC cd, int opindex,
|
||
const char ** strp_in, CGEN_FIELDS * fields)
|
||
{
|
||
const char * errmsg = NULL;
|
||
char *str = 0, *hold = 0;
|
||
const char **strp = 0;
|
||
|
||
/* Set up a new pointer to macro-expanded string. */
|
||
str = expand_string (*strp_in, 1);
|
||
/* fprintf (stderr, " expanded <<%s>> to <<%s>>\n", *strp_in, str); */
|
||
|
||
hold = str;
|
||
strp = (const char **)(&str);
|
||
|
||
errmsg = mep_cgen_parse_operand (cd, opindex, strp, fields);
|
||
|
||
/* Now work out the advance. */
|
||
if (strlen (str) == 0)
|
||
*strp_in += strlen (*strp_in);
|
||
|
||
else
|
||
{
|
||
if (strstr (*strp_in, str))
|
||
/* A macro-expansion was pulled off the front. */
|
||
*strp_in = strstr (*strp_in, str);
|
||
else
|
||
/* A non-macro-expansion was pulled off the front. */
|
||
*strp_in += (str - hold);
|
||
}
|
||
|
||
if (hold)
|
||
free (hold);
|
||
|
||
return errmsg;
|
||
}
|
||
|
||
#define CGEN_ASM_INIT_HOOK (cd->parse_operand = mep_cgen_expand_macros_and_parse_operand);
|
||
|
||
/* -- dis.c */
|
||
|
||
const char * mep_cgen_parse_operand
|
||
(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
|
||
used tables to look up the function to use, but
|
||
- if the table contains both assembler and disassembler functions then
|
||
the disassembler contains much of the assembler and vice-versa,
|
||
- there's a lot of inlining possibilities as things grow,
|
||
- using a switch statement avoids the function call overhead.
|
||
|
||
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. */
|
||
|
||
const char *
|
||
mep_cgen_parse_operand (CGEN_CPU_DESC cd,
|
||
int opindex,
|
||
const char ** strp,
|
||
CGEN_FIELDS * fields)
|
||
{
|
||
const char * errmsg = NULL;
|
||
/* Used by scalar operands that still need to be parsed. */
|
||
long junk ATTRIBUTE_UNUSED;
|
||
|
||
switch (opindex)
|
||
{
|
||
case MEP_OPERAND_ADDR24A4 :
|
||
errmsg = parse_mep_alignu (cd, strp, MEP_OPERAND_ADDR24A4, (unsigned long *) (& fields->f_24u8a4n));
|
||
break;
|
||
case MEP_OPERAND_CALLNUM :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CALLNUM, (unsigned long *) (& fields->f_callnum));
|
||
break;
|
||
case MEP_OPERAND_CCCC :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CCCC, (unsigned long *) (& fields->f_rm));
|
||
break;
|
||
case MEP_OPERAND_CCRN :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr, & fields->f_ccrn);
|
||
break;
|
||
case MEP_OPERAND_CDISP8 :
|
||
errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_CDISP8, (long *) (& fields->f_8s24));
|
||
break;
|
||
case MEP_OPERAND_CDISP8A2 :
|
||
errmsg = parse_mep_align (cd, strp, MEP_OPERAND_CDISP8A2, (long *) (& fields->f_8s24a2));
|
||
break;
|
||
case MEP_OPERAND_CDISP8A4 :
|
||
errmsg = parse_mep_align (cd, strp, MEP_OPERAND_CDISP8A4, (long *) (& fields->f_8s24a4));
|
||
break;
|
||
case MEP_OPERAND_CDISP8A8 :
|
||
errmsg = parse_mep_align (cd, strp, MEP_OPERAND_CDISP8A8, (long *) (& fields->f_8s24a8));
|
||
break;
|
||
case MEP_OPERAND_CIMM4 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CIMM4, (unsigned long *) (& fields->f_rn));
|
||
break;
|
||
case MEP_OPERAND_CIMM5 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CIMM5, (unsigned long *) (& fields->f_5u24));
|
||
break;
|
||
case MEP_OPERAND_CODE16 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CODE16, (unsigned long *) (& fields->f_16u16));
|
||
break;
|
||
case MEP_OPERAND_CODE24 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CODE24, (unsigned long *) (& fields->f_24u4n));
|
||
break;
|
||
case MEP_OPERAND_CP_FLAG :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr, & junk);
|
||
break;
|
||
case MEP_OPERAND_CRN :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr, & fields->f_crn);
|
||
break;
|
||
case MEP_OPERAND_CRN64 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_crn);
|
||
break;
|
||
case MEP_OPERAND_CRNX :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr, & fields->f_crnx);
|
||
break;
|
||
case MEP_OPERAND_CRNX64 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_crnx);
|
||
break;
|
||
case MEP_OPERAND_CSRN :
|
||
errmsg = parse_csrn (cd, strp, & mep_cgen_opval_h_csr, & fields->f_csrn);
|
||
break;
|
||
case MEP_OPERAND_CSRN_IDX :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CSRN_IDX, (unsigned long *) (& fields->f_csrn));
|
||
break;
|
||
case MEP_OPERAND_DBG :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_DEPC :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_EPC :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_EXC :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_FMAX_CCRN :
|
||
errmsg = parse_fmax_ccr (cd, strp, & mep_cgen_opval_h_ccr, & fields->f_fmax_4_4);
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRD :
|
||
errmsg = parse_fmax_cr (cd, strp, & mep_cgen_opval_h_cr, & fields->f_fmax_frd);
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRD_INT :
|
||
errmsg = parse_fmax_cr (cd, strp, & mep_cgen_opval_h_cr, & fields->f_fmax_frd);
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRM :
|
||
errmsg = parse_fmax_cr (cd, strp, & mep_cgen_opval_h_cr, & fields->f_fmax_frm);
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRN :
|
||
errmsg = parse_fmax_cr (cd, strp, & mep_cgen_opval_h_cr, & fields->f_fmax_frn);
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRN_INT :
|
||
errmsg = parse_fmax_cr (cd, strp, & mep_cgen_opval_h_cr, & fields->f_fmax_frn);
|
||
break;
|
||
case MEP_OPERAND_FMAX_RM :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_fmax_rm);
|
||
break;
|
||
case MEP_OPERAND_HI :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_LO :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_LP :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_MB0 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_MB1 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_ME0 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_ME1 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_NPC :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_OPT :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_PCABS24A2 :
|
||
errmsg = parse_mep_alignu (cd, strp, MEP_OPERAND_PCABS24A2, (unsigned long *) (& fields->f_24u5a2n));
|
||
break;
|
||
case MEP_OPERAND_PCREL12A2 :
|
||
errmsg = parse_mep_align (cd, strp, MEP_OPERAND_PCREL12A2, (long *) (& fields->f_12s4a2));
|
||
break;
|
||
case MEP_OPERAND_PCREL17A2 :
|
||
errmsg = parse_mep_align (cd, strp, MEP_OPERAND_PCREL17A2, (long *) (& fields->f_17s16a2));
|
||
break;
|
||
case MEP_OPERAND_PCREL24A2 :
|
||
errmsg = parse_mep_align (cd, strp, MEP_OPERAND_PCREL24A2, (long *) (& fields->f_24s5a2n));
|
||
break;
|
||
case MEP_OPERAND_PCREL8A2 :
|
||
errmsg = parse_mep_align (cd, strp, MEP_OPERAND_PCREL8A2, (long *) (& fields->f_8s8a2));
|
||
break;
|
||
case MEP_OPERAND_PSW :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_R0 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & junk);
|
||
break;
|
||
case MEP_OPERAND_R1 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & junk);
|
||
break;
|
||
case MEP_OPERAND_RL :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rl);
|
||
break;
|
||
case MEP_OPERAND_RM :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rm);
|
||
break;
|
||
case MEP_OPERAND_RMA :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rm);
|
||
break;
|
||
case MEP_OPERAND_RN :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn);
|
||
break;
|
||
case MEP_OPERAND_RN3 :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3);
|
||
break;
|
||
case MEP_OPERAND_RN3C :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3);
|
||
break;
|
||
case MEP_OPERAND_RN3L :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3);
|
||
break;
|
||
case MEP_OPERAND_RN3S :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3);
|
||
break;
|
||
case MEP_OPERAND_RN3UC :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3);
|
||
break;
|
||
case MEP_OPERAND_RN3UL :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3);
|
||
break;
|
||
case MEP_OPERAND_RN3US :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3);
|
||
break;
|
||
case MEP_OPERAND_RNC :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn);
|
||
break;
|
||
case MEP_OPERAND_RNL :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn);
|
||
break;
|
||
case MEP_OPERAND_RNS :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn);
|
||
break;
|
||
case MEP_OPERAND_RNUC :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn);
|
||
break;
|
||
case MEP_OPERAND_RNUL :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn);
|
||
break;
|
||
case MEP_OPERAND_RNUS :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn);
|
||
break;
|
||
case MEP_OPERAND_SAR :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk);
|
||
break;
|
||
case MEP_OPERAND_SDISP16 :
|
||
errmsg = parse_signed16 (cd, strp, MEP_OPERAND_SDISP16, (long *) (& fields->f_16s16));
|
||
break;
|
||
case MEP_OPERAND_SIMM16 :
|
||
errmsg = parse_signed16 (cd, strp, MEP_OPERAND_SIMM16, (long *) (& fields->f_16s16));
|
||
break;
|
||
case MEP_OPERAND_SIMM6 :
|
||
errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_SIMM6, (long *) (& fields->f_6s8));
|
||
break;
|
||
case MEP_OPERAND_SIMM8 :
|
||
errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_SIMM8, (long *) (& fields->f_8s8));
|
||
break;
|
||
case MEP_OPERAND_SP :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & junk);
|
||
break;
|
||
case MEP_OPERAND_SPR :
|
||
errmsg = parse_spreg (cd, strp, & mep_cgen_opval_h_gpr, & junk);
|
||
break;
|
||
case MEP_OPERAND_TP :
|
||
errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & junk);
|
||
break;
|
||
case MEP_OPERAND_TPR :
|
||
errmsg = parse_tpreg (cd, strp, & mep_cgen_opval_h_gpr, & junk);
|
||
break;
|
||
case MEP_OPERAND_UDISP2 :
|
||
errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_UDISP2, (long *) (& fields->f_2u6));
|
||
break;
|
||
case MEP_OPERAND_UDISP7 :
|
||
errmsg = parse_unsigned7 (cd, strp, MEP_OPERAND_UDISP7, (unsigned long *) (& fields->f_7u9));
|
||
break;
|
||
case MEP_OPERAND_UDISP7A2 :
|
||
errmsg = parse_unsigned7 (cd, strp, MEP_OPERAND_UDISP7A2, (unsigned long *) (& fields->f_7u9a2));
|
||
break;
|
||
case MEP_OPERAND_UDISP7A4 :
|
||
errmsg = parse_unsigned7 (cd, strp, MEP_OPERAND_UDISP7A4, (unsigned long *) (& fields->f_7u9a4));
|
||
break;
|
||
case MEP_OPERAND_UIMM16 :
|
||
errmsg = parse_unsigned16 (cd, strp, MEP_OPERAND_UIMM16, (unsigned long *) (& fields->f_16u16));
|
||
break;
|
||
case MEP_OPERAND_UIMM2 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM2, (unsigned long *) (& fields->f_2u10));
|
||
break;
|
||
case MEP_OPERAND_UIMM24 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM24, (unsigned long *) (& fields->f_24u8n));
|
||
break;
|
||
case MEP_OPERAND_UIMM3 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM3, (unsigned long *) (& fields->f_3u5));
|
||
break;
|
||
case MEP_OPERAND_UIMM4 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM4, (unsigned long *) (& fields->f_4u8));
|
||
break;
|
||
case MEP_OPERAND_UIMM5 :
|
||
errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM5, (unsigned long *) (& fields->f_5u8));
|
||
break;
|
||
case MEP_OPERAND_UIMM7A4 :
|
||
errmsg = parse_mep_alignu (cd, strp, MEP_OPERAND_UIMM7A4, (unsigned long *) (& fields->f_7u9a4));
|
||
break;
|
||
case MEP_OPERAND_ZERO :
|
||
errmsg = parse_zero (cd, strp, MEP_OPERAND_ZERO, (long *) (& junk));
|
||
break;
|
||
|
||
default :
|
||
/* xgettext:c-format */
|
||
fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
|
||
abort ();
|
||
}
|
||
|
||
return errmsg;
|
||
}
|
||
|
||
cgen_parse_fn * const mep_cgen_parse_handlers[] =
|
||
{
|
||
parse_insn_normal,
|
||
};
|
||
|
||
void
|
||
mep_cgen_init_asm (CGEN_CPU_DESC cd)
|
||
{
|
||
mep_cgen_init_opcode_table (cd);
|
||
mep_cgen_init_ibld_table (cd);
|
||
cd->parse_handlers = & mep_cgen_parse_handlers[0];
|
||
cd->parse_operand = mep_cgen_parse_operand;
|
||
#ifdef CGEN_ASM_INIT_HOOK
|
||
CGEN_ASM_INIT_HOOK
|
||
#endif
|
||
}
|
||
|
||
|
||
|
||
/* 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 mep_cgen_assemble_insn
|
||
|
||
Returns NULL for success, an error message for failure. */
|
||
|
||
char *
|
||
mep_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;
|
||
}
|
||
}
|
||
|
||
|
||
/* Default insn parser.
|
||
|
||
The syntax string is scanned and operands are parsed and stored in FIELDS.
|
||
Relocs are queued as we go via other callbacks.
|
||
|
||
??? Note that this is currently an all-or-nothing parser. If we fail to
|
||
parse the instruction, we return 0 and the caller will start over from
|
||
the beginning. Backtracking will be necessary in parsing subexpressions,
|
||
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. */
|
||
|
||
static const char *
|
||
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 CGEN_SYNTAX_CHAR_TYPE * syn;
|
||
#ifdef CGEN_MNEMONIC_OPERANDS
|
||
/* FIXME: wip */
|
||
int past_opcode_p;
|
||
#endif
|
||
|
||
/* For now we assume the mnemonic is first (there are no leading operands).
|
||
We can parse it without needing to set up operand parsing.
|
||
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))
|
||
++p, ++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
|
||
past_opcode_p = 0;
|
||
#endif
|
||
|
||
/* We don't check for (*str != '\0') here because we want to parse
|
||
any trailing fake arguments in the syntax string. */
|
||
syn = CGEN_SYNTAX_STRING (syntax);
|
||
|
||
/* Mnemonics come first for now, ensure valid string. */
|
||
if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
|
||
abort ();
|
||
|
||
++syn;
|
||
|
||
while (* syn != 0)
|
||
{
|
||
/* Non operand chars must match exactly. */
|
||
if (CGEN_SYNTAX_CHAR_P (* 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 (CGEN_SYNTAX_CHAR(* syn) == ' ')
|
||
past_opcode_p = 1;
|
||
#endif
|
||
++ syn;
|
||
++ str;
|
||
}
|
||
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')"),
|
||
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 = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
|
||
&str, fields);
|
||
if (errmsg)
|
||
return errmsg;
|
||
|
||
/* Done with this operand, continue with next one. */
|
||
++ syn;
|
||
}
|
||
|
||
/* If we're at the end of the syntax string, we're done. */
|
||
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))
|
||
++ str;
|
||
|
||
if (* str != '\0')
|
||
return _("junk at end of line"); /* FIXME: would like to include `str' */
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* We couldn't parse it. */
|
||
return _("unrecognized instruction");
|
||
}
|
||
|
||
/* Main entry point.
|
||
This routine is called for each instruction to be assembled.
|
||
STR points to the insn to be assembled.
|
||
We assume all necessary tables have been initialized.
|
||
The assembled instruction, less any fixups, is stored in BUF.
|
||
Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
|
||
still needs to be converted to target byte order, otherwise BUF is an array
|
||
of bytes in target byte order.
|
||
The result is a pointer to the insn's entry in the opcode table,
|
||
or NULL if an error occured (an error message will have already been
|
||
printed).
|
||
|
||
Note that when processing (non-alias) macro-insns,
|
||
this function recurses.
|
||
|
||
??? It's possible to make this cpu-independent.
|
||
One would have to deal with a few minor things.
|
||
At this point in time doing so would be more of a curiosity than useful
|
||
[for example this file isn't _that_ big], but keeping the possibility in
|
||
mind helps keep the design clean. */
|
||
|
||
const CGEN_INSN *
|
||
mep_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))
|
||
++ str;
|
||
|
||
/* The instructions are stored in hashed lists.
|
||
Get the first in the list. */
|
||
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;
|
||
|
||
#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 (! mep_cgen_insn_supported (cd, insn))
|
||
continue;
|
||
#endif
|
||
/* 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_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);
|
||
|
||
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;
|
||
|
||
/* It is up to the caller to actually output the insn and any
|
||
queued relocs. */
|
||
return insn;
|
||
}
|
||
|
||
{
|
||
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;
|
||
}
|
||
}
|