mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-24 01:33:32 +08:00
254 lines
6.2 KiB
C
254 lines
6.2 KiB
C
/* FR30 opcode support. -*- C -*-
|
||
Copyright 2011 Free Software Foundation, Inc.
|
||
|
||
Contributed by Red Hat Inc;
|
||
|
||
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. */
|
||
|
||
/* This file is an addendum to fr30.cpu. Heavy use of C code isn't
|
||
appropriate in .cpu files, so it resides here. This especially applies
|
||
to assembly/disassembly where parsing/printing can be quite involved.
|
||
Such things aren't really part of the specification of the cpu, per se,
|
||
so .cpu files provide the general framework and .opc files handle the
|
||
nitty-gritty details as necessary.
|
||
|
||
Each section is delimited with start and end markers.
|
||
|
||
<arch>-opc.h additions use: "-- opc.h"
|
||
<arch>-opc.c additions use: "-- opc.c"
|
||
<arch>-asm.c additions use: "-- asm.c"
|
||
<arch>-dis.c additions use: "-- dis.c"
|
||
<arch>-ibd.h additions use: "-- ibd.h". */
|
||
|
||
/* -- opc.h */
|
||
|
||
/* ??? This can be improved upon. */
|
||
#undef CGEN_DIS_HASH_SIZE
|
||
#define CGEN_DIS_HASH_SIZE 16
|
||
#undef CGEN_DIS_HASH
|
||
#define CGEN_DIS_HASH(buffer, value) (((unsigned char *) (buffer))[0] >> 4)
|
||
|
||
/* -- */
|
||
|
||
/* -- asm.c */
|
||
/* Handle register lists for LDMx and STMx. */
|
||
|
||
static int
|
||
parse_register_number (const char **strp)
|
||
{
|
||
int regno;
|
||
|
||
if (**strp < '0' || **strp > '9')
|
||
return -1; /* Error. */
|
||
regno = **strp - '0';
|
||
++*strp;
|
||
|
||
if (**strp >= '0' && **strp <= '9')
|
||
{
|
||
regno = regno * 10 + (**strp - '0');
|
||
++*strp;
|
||
}
|
||
|
||
return regno;
|
||
}
|
||
|
||
static const char *
|
||
parse_register_list (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
const char **strp,
|
||
int opindex ATTRIBUTE_UNUSED,
|
||
unsigned long *valuep,
|
||
int high_low, /* 0 == high, 1 == low. */
|
||
int load_store) /* 0 == load, 1 == store. */
|
||
{
|
||
*valuep = 0;
|
||
while (**strp && **strp != ')')
|
||
{
|
||
int regno;
|
||
|
||
if (**strp != 'R' && **strp != 'r')
|
||
break;
|
||
++*strp;
|
||
|
||
regno = parse_register_number (strp);
|
||
if (regno == -1)
|
||
return _("Register number is not valid");
|
||
if (regno > 7 && !high_low)
|
||
return _("Register must be between r0 and r7");
|
||
if (regno < 8 && high_low)
|
||
return _("Register must be between r8 and r15");
|
||
|
||
if (high_low)
|
||
regno -= 8;
|
||
|
||
if (load_store) /* Mask is reversed for store. */
|
||
*valuep |= 0x80 >> regno;
|
||
else
|
||
*valuep |= 1 << regno;
|
||
|
||
if (**strp == ',')
|
||
{
|
||
if (*(*strp + 1) == ')')
|
||
break;
|
||
++*strp;
|
||
}
|
||
}
|
||
|
||
if (!*strp || **strp != ')')
|
||
return _("Register list is not valid");
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static const char *
|
||
parse_low_register_list_ld (CGEN_CPU_DESC cd,
|
||
const char **strp,
|
||
int opindex,
|
||
unsigned long *valuep)
|
||
{
|
||
return parse_register_list (cd, strp, opindex, valuep,
|
||
0 /* Low. */, 0 /* Load. */);
|
||
}
|
||
|
||
static const char *
|
||
parse_hi_register_list_ld (CGEN_CPU_DESC cd,
|
||
const char **strp,
|
||
int opindex,
|
||
unsigned long *valuep)
|
||
{
|
||
return parse_register_list (cd, strp, opindex, valuep,
|
||
1 /* High. */, 0 /* Load. */);
|
||
}
|
||
|
||
static const char *
|
||
parse_low_register_list_st (CGEN_CPU_DESC cd,
|
||
const char **strp,
|
||
int opindex,
|
||
unsigned long *valuep)
|
||
{
|
||
return parse_register_list (cd, strp, opindex, valuep,
|
||
0 /* Low. */, 1 /* Store. */);
|
||
}
|
||
|
||
static const char *
|
||
parse_hi_register_list_st (CGEN_CPU_DESC cd,
|
||
const char **strp,
|
||
int opindex,
|
||
unsigned long *valuep)
|
||
{
|
||
return parse_register_list (cd, strp, opindex, valuep,
|
||
1 /* High. */, 1 /* Store. */);
|
||
}
|
||
|
||
/* -- */
|
||
|
||
/* -- dis.c */
|
||
static void
|
||
print_register_list (void * dis_info,
|
||
long value,
|
||
long offset,
|
||
int load_store) /* 0 == load, 1 == store. */
|
||
{
|
||
disassemble_info *info = dis_info;
|
||
int mask;
|
||
int reg_index = 0;
|
||
char * comma = "";
|
||
|
||
if (load_store)
|
||
mask = 0x80;
|
||
else
|
||
mask = 1;
|
||
|
||
if (value & mask)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "r%li", reg_index + offset);
|
||
comma = ",";
|
||
}
|
||
|
||
for (reg_index = 1; reg_index <= 7; ++reg_index)
|
||
{
|
||
if (load_store)
|
||
mask >>= 1;
|
||
else
|
||
mask <<= 1;
|
||
|
||
if (value & mask)
|
||
{
|
||
(*info->fprintf_func) (info->stream, "%sr%li", comma, reg_index + offset);
|
||
comma = ",";
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
print_hi_register_list_ld (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
void * dis_info,
|
||
long value,
|
||
unsigned int attrs ATTRIBUTE_UNUSED,
|
||
bfd_vma pc ATTRIBUTE_UNUSED,
|
||
int length ATTRIBUTE_UNUSED)
|
||
{
|
||
print_register_list (dis_info, value, 8, 0 /* Load. */);
|
||
}
|
||
|
||
static void
|
||
print_low_register_list_ld (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
void * dis_info,
|
||
long value,
|
||
unsigned int attrs ATTRIBUTE_UNUSED,
|
||
bfd_vma pc ATTRIBUTE_UNUSED,
|
||
int length ATTRIBUTE_UNUSED)
|
||
{
|
||
print_register_list (dis_info, value, 0, 0 /* Load. */);
|
||
}
|
||
|
||
static void
|
||
print_hi_register_list_st (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
void * dis_info,
|
||
long value,
|
||
unsigned int attrs ATTRIBUTE_UNUSED,
|
||
bfd_vma pc ATTRIBUTE_UNUSED,
|
||
int length ATTRIBUTE_UNUSED)
|
||
{
|
||
print_register_list (dis_info, value, 8, 1 /* Store. */);
|
||
}
|
||
|
||
static void
|
||
print_low_register_list_st (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
void * dis_info,
|
||
long value,
|
||
unsigned int attrs ATTRIBUTE_UNUSED,
|
||
bfd_vma pc ATTRIBUTE_UNUSED,
|
||
int length ATTRIBUTE_UNUSED)
|
||
{
|
||
print_register_list (dis_info, value, 0, 1 /* Store. */);
|
||
}
|
||
|
||
static void
|
||
print_m4 (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
void * dis_info,
|
||
long value,
|
||
unsigned int attrs ATTRIBUTE_UNUSED,
|
||
bfd_vma pc ATTRIBUTE_UNUSED,
|
||
int length ATTRIBUTE_UNUSED)
|
||
{
|
||
disassemble_info *info = (disassemble_info *) dis_info;
|
||
|
||
(*info->fprintf_func) (info->stream, "%ld", value);
|
||
}
|
||
/* -- */
|