235 lines
6 KiB
C
235 lines
6 KiB
C
/* Lattice Mico32 opcode support. -*- C -*-
|
|
Copyright 2008, 2009 Free Software Foundation, Inc.
|
|
Contributed by Jon Beniston <jon@beniston.com>
|
|
|
|
This file is part of the GNU Binutils.
|
|
|
|
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 3 of the License, 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. */
|
|
|
|
/* -- opc.h */
|
|
|
|
/* Allows reason codes to be output when assembler errors occur. */
|
|
#define CGEN_VERBOSE_ASSEMBLER_ERRORS
|
|
|
|
#define CGEN_DIS_HASH_SIZE 64
|
|
#define CGEN_DIS_HASH(buf,value) ((value >> 26) & 0x3f)
|
|
|
|
/* -- asm.c */
|
|
|
|
/* Handle signed/unsigned literal. */
|
|
|
|
static const char *
|
|
parse_imm (CGEN_CPU_DESC cd,
|
|
const char **strp,
|
|
int opindex,
|
|
unsigned long *valuep)
|
|
{
|
|
const char *errmsg;
|
|
signed long value;
|
|
|
|
errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value);
|
|
if (errmsg == NULL)
|
|
{
|
|
unsigned long x = value & 0xFFFF0000;
|
|
if (x != 0 && x != 0xFFFF0000)
|
|
errmsg = _("immediate value out of range");
|
|
else
|
|
*valuep = (value & 0xFFFF);
|
|
}
|
|
return errmsg;
|
|
}
|
|
|
|
/* Handle hi() */
|
|
|
|
static const char *
|
|
parse_hi16 (CGEN_CPU_DESC cd,
|
|
const char **strp,
|
|
int opindex,
|
|
unsigned long *valuep)
|
|
{
|
|
if (strncasecmp (*strp, "hi(", 3) == 0)
|
|
{
|
|
enum cgen_parse_operand_result result_type;
|
|
bfd_vma value;
|
|
const char *errmsg;
|
|
|
|
*strp += 3;
|
|
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,
|
|
&result_type, &value);
|
|
if (**strp != ')')
|
|
return _("missing `)'");
|
|
|
|
++*strp;
|
|
if (errmsg == NULL
|
|
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
|
|
value = (value >> 16) & 0xffff;
|
|
*valuep = value;
|
|
|
|
return errmsg;
|
|
}
|
|
|
|
return parse_imm (cd, strp, opindex, valuep);
|
|
}
|
|
|
|
/* Handle lo() */
|
|
|
|
static const char *
|
|
parse_lo16 (CGEN_CPU_DESC cd,
|
|
const char **strp,
|
|
int opindex,
|
|
unsigned long *valuep)
|
|
{
|
|
if (strncasecmp (*strp, "lo(", 3) == 0)
|
|
{
|
|
const char *errmsg;
|
|
enum cgen_parse_operand_result result_type;
|
|
bfd_vma value;
|
|
|
|
*strp += 3;
|
|
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
|
|
&result_type, &value);
|
|
if (**strp != ')')
|
|
return _("missing `)'");
|
|
++*strp;
|
|
if (errmsg == NULL
|
|
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
|
|
value &= 0xffff;
|
|
*valuep = value;
|
|
return errmsg;
|
|
}
|
|
|
|
return parse_imm (cd, strp, opindex, valuep);
|
|
}
|
|
|
|
/* Handle gp() */
|
|
|
|
static const char *
|
|
parse_gp16 (CGEN_CPU_DESC cd,
|
|
const char **strp,
|
|
int opindex,
|
|
long *valuep)
|
|
{
|
|
if (strncasecmp (*strp, "gp(", 3) == 0)
|
|
{
|
|
const char *errmsg;
|
|
enum cgen_parse_operand_result result_type;
|
|
bfd_vma value;
|
|
|
|
*strp += 3;
|
|
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_GPREL16,
|
|
& result_type, & value);
|
|
if (**strp != ')')
|
|
return _("missing `)'");
|
|
++*strp;
|
|
if (errmsg == NULL
|
|
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
|
|
value &= 0xffff;
|
|
*valuep = value;
|
|
return errmsg;
|
|
}
|
|
|
|
return _("expecting gp relative address: gp(symbol)");
|
|
}
|
|
|
|
/* Handle got() */
|
|
|
|
static const char *
|
|
parse_got16 (CGEN_CPU_DESC cd,
|
|
const char **strp,
|
|
int opindex,
|
|
long *valuep)
|
|
{
|
|
if (strncasecmp (*strp, "got(", 4) == 0)
|
|
{
|
|
const char *errmsg;
|
|
enum cgen_parse_operand_result result_type;
|
|
bfd_vma value;
|
|
|
|
*strp += 4;
|
|
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LM32_16_GOT,
|
|
& result_type, & value);
|
|
if (**strp != ')')
|
|
return _("missing `)'");
|
|
++*strp;
|
|
if (errmsg == NULL
|
|
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
|
|
value &= 0xffff;
|
|
*valuep = value;
|
|
return errmsg;
|
|
}
|
|
|
|
return _("expecting got relative address: got(symbol)");
|
|
}
|
|
|
|
/* Handle gotoffhi16() */
|
|
|
|
static const char *
|
|
parse_gotoff_hi16 (CGEN_CPU_DESC cd,
|
|
const char **strp,
|
|
int opindex,
|
|
long *valuep)
|
|
{
|
|
if (strncasecmp (*strp, "gotoffhi16(", 11) == 0)
|
|
{
|
|
const char *errmsg;
|
|
enum cgen_parse_operand_result result_type;
|
|
bfd_vma value;
|
|
|
|
*strp += 11;
|
|
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LM32_GOTOFF_HI16,
|
|
& result_type, & value);
|
|
if (**strp != ')')
|
|
return _("missing `)'");
|
|
++*strp;
|
|
if (errmsg == NULL
|
|
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
|
|
value &= 0xffff;
|
|
*valuep = value;
|
|
return errmsg;
|
|
}
|
|
|
|
return _("expecting got relative address: gotoffhi16(symbol)");
|
|
}
|
|
|
|
/* Handle gotofflo16() */
|
|
|
|
static const char *
|
|
parse_gotoff_lo16 (CGEN_CPU_DESC cd,
|
|
const char **strp,
|
|
int opindex,
|
|
long *valuep)
|
|
{
|
|
if (strncasecmp (*strp, "gotofflo16(", 11) == 0)
|
|
{
|
|
const char *errmsg;
|
|
enum cgen_parse_operand_result result_type;
|
|
bfd_vma value;
|
|
|
|
*strp += 11;
|
|
errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LM32_GOTOFF_LO16,
|
|
&result_type, &value);
|
|
if (**strp != ')')
|
|
return _("missing `)'");
|
|
++*strp;
|
|
if (errmsg == NULL
|
|
&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
|
|
value &= 0xffff;
|
|
*valuep = value;
|
|
return errmsg;
|
|
}
|
|
|
|
return _("expecting got relative address: gotofflo16(symbol)");
|
|
}
|