/* Instruction building/extraction support for @arch@. -*- C -*-
|
/* Instruction building/extraction support for @arch@. -*- C -*-
|
|
|
THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
|
THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
|
- the resultant file is machine generated, cgen-ibld.in isn't
|
- the resultant file is machine generated, cgen-ibld.in isn't
|
|
|
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2006, 2007,
|
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2006, 2007,
|
2008, 2010 Free Software Foundation, Inc.
|
2008, 2010 Free Software Foundation, Inc.
|
|
|
This file is part of libopcodes.
|
This file is part of libopcodes.
|
|
|
This library is free software; you can redistribute it and/or modify
|
This library is free software; you can redistribute it and/or modify
|
it under the terms of the GNU General Public License as published by
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 3, or (at your option)
|
the Free Software Foundation; either version 3, or (at your option)
|
any later version.
|
any later version.
|
|
|
It is distributed in the hope that it will be useful, but WITHOUT
|
It is distributed in the hope that it will be useful, but WITHOUT
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
License for more details.
|
License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
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.,
|
along with this program; if not, write to the Free Software Foundation, Inc.,
|
51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
|
51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
|
|
|
/* ??? Eventually more and more of this stuff can go to cpu-independent files.
|
/* ??? Eventually more and more of this stuff can go to cpu-independent files.
|
Keep that in mind. */
|
Keep that in mind. */
|
|
|
#include "sysdep.h"
|
#include "sysdep.h"
|
#include
|
#include
|
#include "ansidecl.h"
|
#include "ansidecl.h"
|
#include "dis-asm.h"
|
#include "dis-asm.h"
|
#include "bfd.h"
|
#include "bfd.h"
|
#include "symcat.h"
|
#include "symcat.h"
|
#include "@prefix@-desc.h"
|
#include "@prefix@-desc.h"
|
#include "@prefix@-opc.h"
|
#include "@prefix@-opc.h"
|
#include "cgen/basic-modes.h"
|
#include "cgen/basic-modes.h"
|
#include "opintl.h"
|
#include "opintl.h"
|
#include "safe-ctype.h"
|
#include "safe-ctype.h"
|
|
|
#undef min
|
#undef min
|
#define min(a,b) ((a) < (b) ? (a) : (b))
|
#define min(a,b) ((a) < (b) ? (a) : (b))
|
#undef max
|
#undef max
|
#define max(a,b) ((a) > (b) ? (a) : (b))
|
#define max(a,b) ((a) > (b) ? (a) : (b))
|
|
|
/* Used by the ifield rtx function. */
|
/* Used by the ifield rtx function. */
|
#define FLD(f) (fields->f)
|
#define FLD(f) (fields->f)
|
|
|
static const char * insert_normal
|
static const char * insert_normal
|
(CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,
|
(CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,
|
unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR);
|
unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR);
|
static const char * insert_insn_normal
|
static const char * insert_insn_normal
|
(CGEN_CPU_DESC, const CGEN_INSN *,
|
(CGEN_CPU_DESC, const CGEN_INSN *,
|
CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
|
CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
|
static int extract_normal
|
static int extract_normal
|
(CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,
|
(CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,
|
unsigned int, unsigned int, unsigned int, unsigned int,
|
unsigned int, unsigned int, unsigned int, unsigned int,
|
unsigned int, unsigned int, bfd_vma, long *);
|
unsigned int, unsigned int, bfd_vma, long *);
|
static int extract_insn_normal
|
static int extract_insn_normal
|
(CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
|
(CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
|
CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
|
CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
|
#if CGEN_INT_INSN_P
|
#if CGEN_INT_INSN_P
|
static void put_insn_int_value
|
static void put_insn_int_value
|
(CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT);
|
(CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT);
|
#endif
|
#endif
|
#if ! CGEN_INT_INSN_P
|
#if ! CGEN_INT_INSN_P
|
static CGEN_INLINE void insert_1
|
static CGEN_INLINE void insert_1
|
(CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *);
|
(CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *);
|
static CGEN_INLINE int fill_cache
|
static CGEN_INLINE int fill_cache
|
(CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, bfd_vma);
|
(CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, bfd_vma);
|
static CGEN_INLINE long extract_1
|
static CGEN_INLINE long extract_1
|
(CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma);
|
(CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma);
|
#endif
|
#endif
|
|
|
/* Operand insertion. */
|
/* Operand insertion. */
|
|
|
#if ! CGEN_INT_INSN_P
|
#if ! CGEN_INT_INSN_P
|
|
|
/* Subroutine of insert_normal. */
|
/* Subroutine of insert_normal. */
|
|
|
static CGEN_INLINE void
|
static CGEN_INLINE void
|
insert_1 (CGEN_CPU_DESC cd,
|
insert_1 (CGEN_CPU_DESC cd,
|
unsigned long value,
|
unsigned long value,
|
int start,
|
int start,
|
int length,
|
int length,
|
int word_length,
|
int word_length,
|
unsigned char *bufp)
|
unsigned char *bufp)
|
{
|
{
|
unsigned long x,mask;
|
unsigned long x,mask;
|
int shift;
|
int shift;
|
|
|
x = cgen_get_insn_value (cd, bufp, word_length);
|
x = cgen_get_insn_value (cd, bufp, word_length);
|
|
|
/* Written this way to avoid undefined behaviour. */
|
/* Written this way to avoid undefined behaviour. */
|
mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
if (CGEN_INSN_LSB0_P)
|
if (CGEN_INSN_LSB0_P)
|
shift = (start + 1) - length;
|
shift = (start + 1) - length;
|
else
|
else
|
shift = (word_length - (start + length));
|
shift = (word_length - (start + length));
|
x = (x & ~(mask << shift)) | ((value & mask) << shift);
|
x = (x & ~(mask << shift)) | ((value & mask) << shift);
|
|
|
cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x);
|
cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x);
|
}
|
}
|
|
|
#endif /* ! CGEN_INT_INSN_P */
|
#endif /* ! CGEN_INT_INSN_P */
|
|
|
/* Default insertion routine.
|
/* Default insertion routine.
|
|
|
ATTRS is a mask of the boolean attributes.
|
ATTRS is a mask of the boolean attributes.
|
WORD_OFFSET is the offset in bits from the start of the insn of the value.
|
WORD_OFFSET is the offset in bits from the start of the insn of the value.
|
WORD_LENGTH is the length of the word in bits in which the value resides.
|
WORD_LENGTH is the length of the word in bits in which the value resides.
|
START is the starting bit number in the word, architecture origin.
|
START is the starting bit number in the word, architecture origin.
|
LENGTH is the length of VALUE in bits.
|
LENGTH is the length of VALUE in bits.
|
TOTAL_LENGTH is the total length of the insn in bits.
|
TOTAL_LENGTH is the total length of the insn in bits.
|
|
|
The result is an error message or NULL if success. */
|
The result is an error message or NULL if success. */
|
|
|
/* ??? This duplicates functionality with bfd's howto table and
|
/* ??? This duplicates functionality with bfd's howto table and
|
bfd_install_relocation. */
|
bfd_install_relocation. */
|
/* ??? This doesn't handle bfd_vma's. Create another function when
|
/* ??? This doesn't handle bfd_vma's. Create another function when
|
necessary. */
|
necessary. */
|
|
|
static const char *
|
static const char *
|
insert_normal (CGEN_CPU_DESC cd,
|
insert_normal (CGEN_CPU_DESC cd,
|
long value,
|
long value,
|
unsigned int attrs,
|
unsigned int attrs,
|
unsigned int word_offset,
|
unsigned int word_offset,
|
unsigned int start,
|
unsigned int start,
|
unsigned int length,
|
unsigned int length,
|
unsigned int word_length,
|
unsigned int word_length,
|
unsigned int total_length,
|
unsigned int total_length,
|
CGEN_INSN_BYTES_PTR buffer)
|
CGEN_INSN_BYTES_PTR buffer)
|
{
|
{
|
static char errbuf[100];
|
static char errbuf[100];
|
/* Written this way to avoid undefined behaviour. */
|
/* Written this way to avoid undefined behaviour. */
|
unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
|
|
/* If LENGTH is zero, this operand doesn't contribute to the value. */
|
/* If LENGTH is zero, this operand doesn't contribute to the value. */
|
if (length == 0)
|
if (length == 0)
|
return NULL;
|
return NULL;
|
|
|
if (word_length > 8 * sizeof (CGEN_INSN_INT))
|
if (word_length > 8 * sizeof (CGEN_INSN_INT))
|
abort ();
|
abort ();
|
|
|
/* For architectures with insns smaller than the base-insn-bitsize,
|
/* For architectures with insns smaller than the base-insn-bitsize,
|
word_length may be too big. */
|
word_length may be too big. */
|
if (cd->min_insn_bitsize < cd->base_insn_bitsize)
|
if (cd->min_insn_bitsize < cd->base_insn_bitsize)
|
{
|
{
|
if (word_offset == 0
|
if (word_offset == 0
|
&& word_length > total_length)
|
&& word_length > total_length)
|
word_length = total_length;
|
word_length = total_length;
|
}
|
}
|
|
|
/* Ensure VALUE will fit. */
|
/* Ensure VALUE will fit. */
|
if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT))
|
if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT))
|
{
|
{
|
long minval = - (1L << (length - 1));
|
long minval = - (1L << (length - 1));
|
unsigned long maxval = mask;
|
unsigned long maxval = mask;
|
|
|
if ((value > 0 && (unsigned long) value > maxval)
|
if ((value > 0 && (unsigned long) value > maxval)
|
|| value < minval)
|
|| value < minval)
|
{
|
{
|
/* xgettext:c-format */
|
/* xgettext:c-format */
|
sprintf (errbuf,
|
sprintf (errbuf,
|
_("operand out of range (%ld not between %ld and %lu)"),
|
_("operand out of range (%ld not between %ld and %lu)"),
|
value, minval, maxval);
|
value, minval, maxval);
|
return errbuf;
|
return errbuf;
|
}
|
}
|
}
|
}
|
else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
|
else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
|
{
|
{
|
unsigned long maxval = mask;
|
unsigned long maxval = mask;
|
unsigned long val = (unsigned long) value;
|
unsigned long val = (unsigned long) value;
|
|
|
/* For hosts with a word size > 32 check to see if value has been sign
|
/* For hosts with a word size > 32 check to see if value has been sign
|
extended beyond 32 bits. If so then ignore these higher sign bits
|
extended beyond 32 bits. If so then ignore these higher sign bits
|
as the user is attempting to store a 32-bit signed value into an
|
as the user is attempting to store a 32-bit signed value into an
|
unsigned 32-bit field which is allowed. */
|
unsigned 32-bit field which is allowed. */
|
if (sizeof (unsigned long) > 4 && ((value >> 32) == -1))
|
if (sizeof (unsigned long) > 4 && ((value >> 32) == -1))
|
val &= 0xFFFFFFFF;
|
val &= 0xFFFFFFFF;
|
|
|
if (val > maxval)
|
if (val > maxval)
|
{
|
{
|
/* xgettext:c-format */
|
/* xgettext:c-format */
|
sprintf (errbuf,
|
sprintf (errbuf,
|
_("operand out of range (0x%lx not between 0 and 0x%lx)"),
|
_("operand out of range (0x%lx not between 0 and 0x%lx)"),
|
val, maxval);
|
val, maxval);
|
return errbuf;
|
return errbuf;
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
if (! cgen_signed_overflow_ok_p (cd))
|
if (! cgen_signed_overflow_ok_p (cd))
|
{
|
{
|
long minval = - (1L << (length - 1));
|
long minval = - (1L << (length - 1));
|
long maxval = (1L << (length - 1)) - 1;
|
long maxval = (1L << (length - 1)) - 1;
|
|
|
if (value < minval || value > maxval)
|
if (value < minval || value > maxval)
|
{
|
{
|
sprintf
|
sprintf
|
/* xgettext:c-format */
|
/* xgettext:c-format */
|
(errbuf, _("operand out of range (%ld not between %ld and %ld)"),
|
(errbuf, _("operand out of range (%ld not between %ld and %ld)"),
|
value, minval, maxval);
|
value, minval, maxval);
|
return errbuf;
|
return errbuf;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
#if CGEN_INT_INSN_P
|
#if CGEN_INT_INSN_P
|
|
|
{
|
{
|
int shift;
|
int shift;
|
|
|
if (CGEN_INSN_LSB0_P)
|
if (CGEN_INSN_LSB0_P)
|
shift = (word_offset + start + 1) - length;
|
shift = (word_offset + start + 1) - length;
|
else
|
else
|
shift = total_length - (word_offset + start + length);
|
shift = total_length - (word_offset + start + length);
|
*buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
|
*buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
|
}
|
}
|
|
|
#else /* ! CGEN_INT_INSN_P */
|
#else /* ! CGEN_INT_INSN_P */
|
|
|
{
|
{
|
unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
|
unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
|
|
|
insert_1 (cd, value, start, length, word_length, bufp);
|
insert_1 (cd, value, start, length, word_length, bufp);
|
}
|
}
|
|
|
#endif /* ! CGEN_INT_INSN_P */
|
#endif /* ! CGEN_INT_INSN_P */
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/* Default insn builder (insert handler).
|
/* Default insn builder (insert handler).
|
The instruction is recorded in CGEN_INT_INSN_P byte order (meaning
|
The instruction is recorded in CGEN_INT_INSN_P byte order (meaning
|
that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is
|
that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is
|
recorded in host byte order, otherwise BUFFER is an array of bytes
|
recorded in host byte order, otherwise BUFFER is an array of bytes
|
and the value is recorded in target byte order).
|
and the value is recorded in target byte order).
|
The result is an error message or NULL if success. */
|
The result is an error message or NULL if success. */
|
|
|
static const char *
|
static const char *
|
insert_insn_normal (CGEN_CPU_DESC cd,
|
insert_insn_normal (CGEN_CPU_DESC cd,
|
const CGEN_INSN * insn,
|
const CGEN_INSN * insn,
|
CGEN_FIELDS * fields,
|
CGEN_FIELDS * fields,
|
CGEN_INSN_BYTES_PTR buffer,
|
CGEN_INSN_BYTES_PTR buffer,
|
bfd_vma pc)
|
bfd_vma pc)
|
{
|
{
|
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
unsigned long value;
|
unsigned long value;
|
const CGEN_SYNTAX_CHAR_TYPE * syn;
|
const CGEN_SYNTAX_CHAR_TYPE * syn;
|
|
|
CGEN_INIT_INSERT (cd);
|
CGEN_INIT_INSERT (cd);
|
value = CGEN_INSN_BASE_VALUE (insn);
|
value = CGEN_INSN_BASE_VALUE (insn);
|
|
|
/* If we're recording insns as numbers (rather than a string of bytes),
|
/* If we're recording insns as numbers (rather than a string of bytes),
|
target byte order handling is deferred until later. */
|
target byte order handling is deferred until later. */
|
|
|
#if CGEN_INT_INSN_P
|
#if CGEN_INT_INSN_P
|
|
|
put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
|
put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
|
CGEN_FIELDS_BITSIZE (fields), value);
|
CGEN_FIELDS_BITSIZE (fields), value);
|
|
|
#else
|
#else
|
|
|
cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize,
|
cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize,
|
(unsigned) CGEN_FIELDS_BITSIZE (fields)),
|
(unsigned) CGEN_FIELDS_BITSIZE (fields)),
|
value);
|
value);
|
|
|
#endif /* ! CGEN_INT_INSN_P */
|
#endif /* ! CGEN_INT_INSN_P */
|
|
|
/* ??? It would be better to scan the format's fields.
|
/* ??? It would be better to scan the format's fields.
|
Still need to be able to insert a value based on the operand though;
|
Still need to be able to insert a value based on the operand though;
|
e.g. storing a branch displacement that got resolved later.
|
e.g. storing a branch displacement that got resolved later.
|
Needs more thought first. */
|
Needs more thought first. */
|
|
|
for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
|
for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
|
{
|
{
|
const char *errmsg;
|
const char *errmsg;
|
|
|
if (CGEN_SYNTAX_CHAR_P (* syn))
|
if (CGEN_SYNTAX_CHAR_P (* syn))
|
continue;
|
continue;
|
|
|
errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
|
errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
|
fields, buffer, pc);
|
fields, buffer, pc);
|
if (errmsg)
|
if (errmsg)
|
return errmsg;
|
return errmsg;
|
}
|
}
|
|
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
#if CGEN_INT_INSN_P
|
#if CGEN_INT_INSN_P
|
/* Cover function to store an insn value into an integral insn. Must go here
|
/* Cover function to store an insn value into an integral insn. Must go here
|
because it needs -desc.h for CGEN_INT_INSN_P. */
|
because it needs -desc.h for CGEN_INT_INSN_P. */
|
|
|
static void
|
static void
|
put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
CGEN_INSN_BYTES_PTR buf,
|
CGEN_INSN_BYTES_PTR buf,
|
int length,
|
int length,
|
int insn_length,
|
int insn_length,
|
CGEN_INSN_INT value)
|
CGEN_INSN_INT value)
|
{
|
{
|
/* For architectures with insns smaller than the base-insn-bitsize,
|
/* For architectures with insns smaller than the base-insn-bitsize,
|
length may be too big. */
|
length may be too big. */
|
if (length > insn_length)
|
if (length > insn_length)
|
*buf = value;
|
*buf = value;
|
else
|
else
|
{
|
{
|
int shift = insn_length - length;
|
int shift = insn_length - length;
|
/* Written this way to avoid undefined behaviour. */
|
/* Written this way to avoid undefined behaviour. */
|
CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
|
|
*buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
|
*buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
|
}
|
}
|
}
|
}
|
#endif
|
#endif
|
|
|
/* Operand extraction. */
|
/* Operand extraction. */
|
|
|
#if ! CGEN_INT_INSN_P
|
#if ! CGEN_INT_INSN_P
|
|
|
/* Subroutine of extract_normal.
|
/* Subroutine of extract_normal.
|
Ensure sufficient bytes are cached in EX_INFO.
|
Ensure sufficient bytes are cached in EX_INFO.
|
OFFSET is the offset in bytes from the start of the insn of the value.
|
OFFSET is the offset in bytes from the start of the insn of the value.
|
BYTES is the length of the needed value.
|
BYTES is the length of the needed value.
|
Returns 1 for success, 0 for failure. */
|
Returns 1 for success, 0 for failure. */
|
|
|
static CGEN_INLINE int
|
static CGEN_INLINE int
|
fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
CGEN_EXTRACT_INFO *ex_info,
|
CGEN_EXTRACT_INFO *ex_info,
|
int offset,
|
int offset,
|
int bytes,
|
int bytes,
|
bfd_vma pc)
|
bfd_vma pc)
|
{
|
{
|
/* It's doubtful that the middle part has already been fetched so
|
/* It's doubtful that the middle part has already been fetched so
|
we don't optimize that case. kiss. */
|
we don't optimize that case. kiss. */
|
unsigned int mask;
|
unsigned int mask;
|
disassemble_info *info = (disassemble_info *) ex_info->dis_info;
|
disassemble_info *info = (disassemble_info *) ex_info->dis_info;
|
|
|
/* First do a quick check. */
|
/* First do a quick check. */
|
mask = (1 << bytes) - 1;
|
mask = (1 << bytes) - 1;
|
if (((ex_info->valid >> offset) & mask) == mask)
|
if (((ex_info->valid >> offset) & mask) == mask)
|
return 1;
|
return 1;
|
|
|
/* Search for the first byte we need to read. */
|
/* Search for the first byte we need to read. */
|
for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
|
for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
|
if (! (mask & ex_info->valid))
|
if (! (mask & ex_info->valid))
|
break;
|
break;
|
|
|
if (bytes)
|
if (bytes)
|
{
|
{
|
int status;
|
int status;
|
|
|
pc += offset;
|
pc += offset;
|
status = (*info->read_memory_func)
|
status = (*info->read_memory_func)
|
(pc, ex_info->insn_bytes + offset, bytes, info);
|
(pc, ex_info->insn_bytes + offset, bytes, info);
|
|
|
if (status != 0)
|
if (status != 0)
|
{
|
{
|
(*info->memory_error_func) (status, pc, info);
|
(*info->memory_error_func) (status, pc, info);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
ex_info->valid |= ((1 << bytes) - 1) << offset;
|
ex_info->valid |= ((1 << bytes) - 1) << offset;
|
}
|
}
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* Subroutine of extract_normal. */
|
/* Subroutine of extract_normal. */
|
|
|
static CGEN_INLINE long
|
static CGEN_INLINE long
|
extract_1 (CGEN_CPU_DESC cd,
|
extract_1 (CGEN_CPU_DESC cd,
|
CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
|
CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
|
int start,
|
int start,
|
int length,
|
int length,
|
int word_length,
|
int word_length,
|
unsigned char *bufp,
|
unsigned char *bufp,
|
bfd_vma pc ATTRIBUTE_UNUSED)
|
bfd_vma pc ATTRIBUTE_UNUSED)
|
{
|
{
|
unsigned long x;
|
unsigned long x;
|
int shift;
|
int shift;
|
|
|
x = cgen_get_insn_value (cd, bufp, word_length);
|
x = cgen_get_insn_value (cd, bufp, word_length);
|
|
|
if (CGEN_INSN_LSB0_P)
|
if (CGEN_INSN_LSB0_P)
|
shift = (start + 1) - length;
|
shift = (start + 1) - length;
|
else
|
else
|
shift = (word_length - (start + length));
|
shift = (word_length - (start + length));
|
return x >> shift;
|
return x >> shift;
|
}
|
}
|
|
|
#endif /* ! CGEN_INT_INSN_P */
|
#endif /* ! CGEN_INT_INSN_P */
|
|
|
/* Default extraction routine.
|
/* Default extraction routine.
|
|
|
INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
|
INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
|
or sometimes less for cases like the m32r where the base insn size is 32
|
or sometimes less for cases like the m32r where the base insn size is 32
|
but some insns are 16 bits.
|
but some insns are 16 bits.
|
ATTRS is a mask of the boolean attributes. We only need `SIGNED',
|
ATTRS is a mask of the boolean attributes. We only need `SIGNED',
|
but for generality we take a bitmask of all of them.
|
but for generality we take a bitmask of all of them.
|
WORD_OFFSET is the offset in bits from the start of the insn of the value.
|
WORD_OFFSET is the offset in bits from the start of the insn of the value.
|
WORD_LENGTH is the length of the word in bits in which the value resides.
|
WORD_LENGTH is the length of the word in bits in which the value resides.
|
START is the starting bit number in the word, architecture origin.
|
START is the starting bit number in the word, architecture origin.
|
LENGTH is the length of VALUE in bits.
|
LENGTH is the length of VALUE in bits.
|
TOTAL_LENGTH is the total length of the insn in bits.
|
TOTAL_LENGTH is the total length of the insn in bits.
|
|
|
Returns 1 for success, 0 for failure. */
|
Returns 1 for success, 0 for failure. */
|
|
|
/* ??? The return code isn't properly used. wip. */
|
/* ??? The return code isn't properly used. wip. */
|
|
|
/* ??? This doesn't handle bfd_vma's. Create another function when
|
/* ??? This doesn't handle bfd_vma's. Create another function when
|
necessary. */
|
necessary. */
|
|
|
static int
|
static int
|
extract_normal (CGEN_CPU_DESC cd,
|
extract_normal (CGEN_CPU_DESC cd,
|
#if ! CGEN_INT_INSN_P
|
#if ! CGEN_INT_INSN_P
|
CGEN_EXTRACT_INFO *ex_info,
|
CGEN_EXTRACT_INFO *ex_info,
|
#else
|
#else
|
CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
|
CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
|
#endif
|
#endif
|
CGEN_INSN_INT insn_value,
|
CGEN_INSN_INT insn_value,
|
unsigned int attrs,
|
unsigned int attrs,
|
unsigned int word_offset,
|
unsigned int word_offset,
|
unsigned int start,
|
unsigned int start,
|
unsigned int length,
|
unsigned int length,
|
unsigned int word_length,
|
unsigned int word_length,
|
unsigned int total_length,
|
unsigned int total_length,
|
#if ! CGEN_INT_INSN_P
|
#if ! CGEN_INT_INSN_P
|
bfd_vma pc,
|
bfd_vma pc,
|
#else
|
#else
|
bfd_vma pc ATTRIBUTE_UNUSED,
|
bfd_vma pc ATTRIBUTE_UNUSED,
|
#endif
|
#endif
|
long *valuep)
|
long *valuep)
|
{
|
{
|
long value, mask;
|
long value, mask;
|
|
|
/* If LENGTH is zero, this operand doesn't contribute to the value
|
/* If LENGTH is zero, this operand doesn't contribute to the value
|
so give it a standard value of zero. */
|
so give it a standard value of zero. */
|
if (length == 0)
|
if (length == 0)
|
{
|
{
|
*valuep = 0;
|
*valuep = 0;
|
return 1;
|
return 1;
|
}
|
}
|
|
|
if (word_length > 8 * sizeof (CGEN_INSN_INT))
|
if (word_length > 8 * sizeof (CGEN_INSN_INT))
|
abort ();
|
abort ();
|
|
|
/* For architectures with insns smaller than the insn-base-bitsize,
|
/* For architectures with insns smaller than the insn-base-bitsize,
|
word_length may be too big. */
|
word_length may be too big. */
|
if (cd->min_insn_bitsize < cd->base_insn_bitsize)
|
if (cd->min_insn_bitsize < cd->base_insn_bitsize)
|
{
|
{
|
if (word_offset + word_length > total_length)
|
if (word_offset + word_length > total_length)
|
word_length = total_length - word_offset;
|
word_length = total_length - word_offset;
|
}
|
}
|
|
|
/* Does the value reside in INSN_VALUE, and at the right alignment? */
|
/* Does the value reside in INSN_VALUE, and at the right alignment? */
|
|
|
if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
|
if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
|
{
|
{
|
if (CGEN_INSN_LSB0_P)
|
if (CGEN_INSN_LSB0_P)
|
value = insn_value >> ((word_offset + start + 1) - length);
|
value = insn_value >> ((word_offset + start + 1) - length);
|
else
|
else
|
value = insn_value >> (total_length - ( word_offset + start + length));
|
value = insn_value >> (total_length - ( word_offset + start + length));
|
}
|
}
|
|
|
#if ! CGEN_INT_INSN_P
|
#if ! CGEN_INT_INSN_P
|
|
|
else
|
else
|
{
|
{
|
unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
|
unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
|
|
|
if (word_length > 8 * sizeof (CGEN_INSN_INT))
|
if (word_length > 8 * sizeof (CGEN_INSN_INT))
|
abort ();
|
abort ();
|
|
|
if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
|
if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
|
return 0;
|
return 0;
|
|
|
value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
|
value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
|
}
|
}
|
|
|
#endif /* ! CGEN_INT_INSN_P */
|
#endif /* ! CGEN_INT_INSN_P */
|
|
|
/* Written this way to avoid undefined behaviour. */
|
/* Written this way to avoid undefined behaviour. */
|
mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
|
|
value &= mask;
|
value &= mask;
|
/* sign extend? */
|
/* sign extend? */
|
if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
|
if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
|
&& (value & (1L << (length - 1))))
|
&& (value & (1L << (length - 1))))
|
value |= ~mask;
|
value |= ~mask;
|
|
|
*valuep = value;
|
*valuep = value;
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* Default insn extractor.
|
/* Default insn extractor.
|
|
|
INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
|
INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
|
The extracted fields are stored in FIELDS.
|
The extracted fields are stored in FIELDS.
|
EX_INFO is used to handle reading variable length insns.
|
EX_INFO is used to handle reading variable length insns.
|
Return the length of the insn in bits, or 0 if no match,
|
Return the length of the insn in bits, or 0 if no match,
|
or -1 if an error occurs fetching data (memory_error_func will have
|
or -1 if an error occurs fetching data (memory_error_func will have
|
been called). */
|
been called). */
|
|
|
static int
|
static int
|
extract_insn_normal (CGEN_CPU_DESC cd,
|
extract_insn_normal (CGEN_CPU_DESC cd,
|
const CGEN_INSN *insn,
|
const CGEN_INSN *insn,
|
CGEN_EXTRACT_INFO *ex_info,
|
CGEN_EXTRACT_INFO *ex_info,
|
CGEN_INSN_INT insn_value,
|
CGEN_INSN_INT insn_value,
|
CGEN_FIELDS *fields,
|
CGEN_FIELDS *fields,
|
bfd_vma pc)
|
bfd_vma pc)
|
{
|
{
|
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
const CGEN_SYNTAX_CHAR_TYPE *syn;
|
const CGEN_SYNTAX_CHAR_TYPE *syn;
|
|
|
CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
|
CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
|
|
|
CGEN_INIT_EXTRACT (cd);
|
CGEN_INIT_EXTRACT (cd);
|
|
|
for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
|
for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
|
{
|
{
|
int length;
|
int length;
|
|
|
if (CGEN_SYNTAX_CHAR_P (*syn))
|
if (CGEN_SYNTAX_CHAR_P (*syn))
|
continue;
|
continue;
|
|
|
length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
|
length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
|
ex_info, insn_value, fields, pc);
|
ex_info, insn_value, fields, pc);
|
if (length <= 0)
|
if (length <= 0)
|
return length;
|
return length;
|
}
|
}
|
|
|
/* We recognized and successfully extracted this insn. */
|
/* We recognized and successfully extracted this insn. */
|
return CGEN_INSN_BITSIZE (insn);
|
return CGEN_INSN_BITSIZE (insn);
|
}
|
}
|
|
|
/* Machine generated code added here. */
|
/* Machine generated code added here. */
|
|
|
