mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-05 02:47:05 +00:00
1009 lines
29 KiB
C
1009 lines
29 KiB
C
/* Instruction building/extraction support for openrisc. -*- C -*-
|
||
|
||
THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
|
||
- the resultant file is machine generated, cgen-ibld.in isn't
|
||
|
||
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2006, 2007
|
||
Free Software Foundation, Inc.
|
||
|
||
This file is part of libopcodes.
|
||
|
||
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
|
||
the Free Software Foundation; either version 3, or (at your option)
|
||
any later version.
|
||
|
||
It 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 "dis-asm.h"
|
||
#include "bfd.h"
|
||
#include "symcat.h"
|
||
#include "openrisc-desc.h"
|
||
#include "openrisc-opc.h"
|
||
#include "opintl.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))
|
||
|
||
/* Used by the ifield rtx function. */
|
||
#define FLD(f) (fields->f)
|
||
|
||
static const char * insert_normal
|
||
(CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,
|
||
unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR);
|
||
static const char * insert_insn_normal
|
||
(CGEN_CPU_DESC, const CGEN_INSN *,
|
||
CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
|
||
static int extract_normal
|
||
(CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,
|
||
unsigned int, unsigned int, unsigned int, unsigned int,
|
||
unsigned int, unsigned int, bfd_vma, long *);
|
||
static int extract_insn_normal
|
||
(CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
|
||
CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
|
||
#if CGEN_INT_INSN_P
|
||
static void put_insn_int_value
|
||
(CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT);
|
||
#endif
|
||
#if ! CGEN_INT_INSN_P
|
||
static CGEN_INLINE void insert_1
|
||
(CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *);
|
||
static CGEN_INLINE int fill_cache
|
||
(CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, bfd_vma);
|
||
static CGEN_INLINE long extract_1
|
||
(CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma);
|
||
#endif
|
||
|
||
/* Operand insertion. */
|
||
|
||
#if ! CGEN_INT_INSN_P
|
||
|
||
/* Subroutine of insert_normal. */
|
||
|
||
static CGEN_INLINE void
|
||
insert_1 (CGEN_CPU_DESC cd,
|
||
unsigned long value,
|
||
int start,
|
||
int length,
|
||
int word_length,
|
||
unsigned char *bufp)
|
||
{
|
||
unsigned long x,mask;
|
||
int shift;
|
||
|
||
x = cgen_get_insn_value (cd, bufp, word_length);
|
||
|
||
/* Written this way to avoid undefined behaviour. */
|
||
mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
||
if (CGEN_INSN_LSB0_P)
|
||
shift = (start + 1) - length;
|
||
else
|
||
shift = (word_length - (start + length));
|
||
x = (x & ~(mask << shift)) | ((value & mask) << shift);
|
||
|
||
cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x);
|
||
}
|
||
|
||
#endif /* ! CGEN_INT_INSN_P */
|
||
|
||
/* Default insertion routine.
|
||
|
||
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_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.
|
||
LENGTH is the length of VALUE in bits.
|
||
TOTAL_LENGTH is the total length of the insn in bits.
|
||
|
||
The result is an error message or NULL if success. */
|
||
|
||
/* ??? This duplicates functionality with bfd's howto table and
|
||
bfd_install_relocation. */
|
||
/* ??? This doesn't handle bfd_vma's. Create another function when
|
||
necessary. */
|
||
|
||
static const char *
|
||
insert_normal (CGEN_CPU_DESC cd,
|
||
long value,
|
||
unsigned int attrs,
|
||
unsigned int word_offset,
|
||
unsigned int start,
|
||
unsigned int length,
|
||
unsigned int word_length,
|
||
unsigned int total_length,
|
||
CGEN_INSN_BYTES_PTR buffer)
|
||
{
|
||
static char errbuf[100];
|
||
/* Written this way to avoid undefined behaviour. */
|
||
unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
||
|
||
/* If LENGTH is zero, this operand doesn't contribute to the value. */
|
||
if (length == 0)
|
||
return NULL;
|
||
|
||
if (word_length > 32)
|
||
abort ();
|
||
|
||
/* For architectures with insns smaller than the base-insn-bitsize,
|
||
word_length may be too big. */
|
||
if (cd->min_insn_bitsize < cd->base_insn_bitsize)
|
||
{
|
||
if (word_offset == 0
|
||
&& word_length > total_length)
|
||
word_length = total_length;
|
||
}
|
||
|
||
/* Ensure VALUE will fit. */
|
||
if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT))
|
||
{
|
||
long minval = - (1L << (length - 1));
|
||
unsigned long maxval = mask;
|
||
|
||
if ((value > 0 && (unsigned long) value > maxval)
|
||
|| value < minval)
|
||
{
|
||
/* xgettext:c-format */
|
||
sprintf (errbuf,
|
||
_("operand out of range (%ld not between %ld and %lu)"),
|
||
value, minval, maxval);
|
||
return errbuf;
|
||
}
|
||
}
|
||
else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
|
||
{
|
||
unsigned long maxval = mask;
|
||
unsigned long val = (unsigned long) value;
|
||
|
||
/* 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
|
||
as the user is attempting to store a 32-bit signed value into an
|
||
unsigned 32-bit field which is allowed. */
|
||
if (sizeof (unsigned long) > 4 && ((value >> 32) == -1))
|
||
val &= 0xFFFFFFFF;
|
||
|
||
if (val > maxval)
|
||
{
|
||
/* xgettext:c-format */
|
||
sprintf (errbuf,
|
||
_("operand out of range (0x%lx not between 0 and 0x%lx)"),
|
||
val, maxval);
|
||
return errbuf;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (! cgen_signed_overflow_ok_p (cd))
|
||
{
|
||
long minval = - (1L << (length - 1));
|
||
long maxval = (1L << (length - 1)) - 1;
|
||
|
||
if (value < minval || value > maxval)
|
||
{
|
||
sprintf
|
||
/* xgettext:c-format */
|
||
(errbuf, _("operand out of range (%ld not between %ld and %ld)"),
|
||
value, minval, maxval);
|
||
return errbuf;
|
||
}
|
||
}
|
||
}
|
||
|
||
#if CGEN_INT_INSN_P
|
||
|
||
{
|
||
int shift;
|
||
|
||
if (CGEN_INSN_LSB0_P)
|
||
shift = (word_offset + start + 1) - length;
|
||
else
|
||
shift = total_length - (word_offset + start + length);
|
||
*buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
|
||
}
|
||
|
||
#else /* ! CGEN_INT_INSN_P */
|
||
|
||
{
|
||
unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
|
||
|
||
insert_1 (cd, value, start, length, word_length, bufp);
|
||
}
|
||
|
||
#endif /* ! CGEN_INT_INSN_P */
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Default insn builder (insert handler).
|
||
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
|
||
recorded in host byte order, otherwise BUFFER is an array of bytes
|
||
and the value is recorded in target byte order).
|
||
The result is an error message or NULL if success. */
|
||
|
||
static const char *
|
||
insert_insn_normal (CGEN_CPU_DESC cd,
|
||
const CGEN_INSN * insn,
|
||
CGEN_FIELDS * fields,
|
||
CGEN_INSN_BYTES_PTR buffer,
|
||
bfd_vma pc)
|
||
{
|
||
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
||
unsigned long value;
|
||
const CGEN_SYNTAX_CHAR_TYPE * syn;
|
||
|
||
CGEN_INIT_INSERT (cd);
|
||
value = CGEN_INSN_BASE_VALUE (insn);
|
||
|
||
/* If we're recording insns as numbers (rather than a string of bytes),
|
||
target byte order handling is deferred until later. */
|
||
|
||
#if CGEN_INT_INSN_P
|
||
|
||
put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
|
||
CGEN_FIELDS_BITSIZE (fields), value);
|
||
|
||
#else
|
||
|
||
cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize,
|
||
(unsigned) CGEN_FIELDS_BITSIZE (fields)),
|
||
value);
|
||
|
||
#endif /* ! CGEN_INT_INSN_P */
|
||
|
||
/* ??? It would be better to scan the format's fields.
|
||
Still need to be able to insert a value based on the operand though;
|
||
e.g. storing a branch displacement that got resolved later.
|
||
Needs more thought first. */
|
||
|
||
for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
|
||
{
|
||
const char *errmsg;
|
||
|
||
if (CGEN_SYNTAX_CHAR_P (* syn))
|
||
continue;
|
||
|
||
errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
|
||
fields, buffer, pc);
|
||
if (errmsg)
|
||
return errmsg;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
#if CGEN_INT_INSN_P
|
||
/* Cover function to store an insn value into an integral insn. Must go here
|
||
because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */
|
||
|
||
static void
|
||
put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
CGEN_INSN_BYTES_PTR buf,
|
||
int length,
|
||
int insn_length,
|
||
CGEN_INSN_INT value)
|
||
{
|
||
/* For architectures with insns smaller than the base-insn-bitsize,
|
||
length may be too big. */
|
||
if (length > insn_length)
|
||
*buf = value;
|
||
else
|
||
{
|
||
int shift = insn_length - length;
|
||
/* Written this way to avoid undefined behaviour. */
|
||
CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
||
|
||
*buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
/* Operand extraction. */
|
||
|
||
#if ! CGEN_INT_INSN_P
|
||
|
||
/* Subroutine of extract_normal.
|
||
Ensure sufficient bytes are cached in EX_INFO.
|
||
OFFSET is the offset in bytes from the start of the insn of the value.
|
||
BYTES is the length of the needed value.
|
||
Returns 1 for success, 0 for failure. */
|
||
|
||
static CGEN_INLINE int
|
||
fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
CGEN_EXTRACT_INFO *ex_info,
|
||
int offset,
|
||
int bytes,
|
||
bfd_vma pc)
|
||
{
|
||
/* It's doubtful that the middle part has already been fetched so
|
||
we don't optimize that case. kiss. */
|
||
unsigned int mask;
|
||
disassemble_info *info = (disassemble_info *) ex_info->dis_info;
|
||
|
||
/* First do a quick check. */
|
||
mask = (1 << bytes) - 1;
|
||
if (((ex_info->valid >> offset) & mask) == mask)
|
||
return 1;
|
||
|
||
/* Search for the first byte we need to read. */
|
||
for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
|
||
if (! (mask & ex_info->valid))
|
||
break;
|
||
|
||
if (bytes)
|
||
{
|
||
int status;
|
||
|
||
pc += offset;
|
||
status = (*info->read_memory_func)
|
||
(pc, ex_info->insn_bytes + offset, bytes, info);
|
||
|
||
if (status != 0)
|
||
{
|
||
(*info->memory_error_func) (status, pc, info);
|
||
return 0;
|
||
}
|
||
|
||
ex_info->valid |= ((1 << bytes) - 1) << offset;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Subroutine of extract_normal. */
|
||
|
||
static CGEN_INLINE long
|
||
extract_1 (CGEN_CPU_DESC cd,
|
||
CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
|
||
int start,
|
||
int length,
|
||
int word_length,
|
||
unsigned char *bufp,
|
||
bfd_vma pc ATTRIBUTE_UNUSED)
|
||
{
|
||
unsigned long x;
|
||
int shift;
|
||
|
||
x = cgen_get_insn_value (cd, bufp, word_length);
|
||
|
||
if (CGEN_INSN_LSB0_P)
|
||
shift = (start + 1) - length;
|
||
else
|
||
shift = (word_length - (start + length));
|
||
return x >> shift;
|
||
}
|
||
|
||
#endif /* ! CGEN_INT_INSN_P */
|
||
|
||
/* Default extraction routine.
|
||
|
||
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
|
||
but some insns are 16 bits.
|
||
ATTRS is a mask of the boolean attributes. We only need `SIGNED',
|
||
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_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.
|
||
LENGTH is the length of VALUE in bits.
|
||
TOTAL_LENGTH is the total length of the insn in bits.
|
||
|
||
Returns 1 for success, 0 for failure. */
|
||
|
||
/* ??? The return code isn't properly used. wip. */
|
||
|
||
/* ??? This doesn't handle bfd_vma's. Create another function when
|
||
necessary. */
|
||
|
||
static int
|
||
extract_normal (CGEN_CPU_DESC cd,
|
||
#if ! CGEN_INT_INSN_P
|
||
CGEN_EXTRACT_INFO *ex_info,
|
||
#else
|
||
CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
|
||
#endif
|
||
CGEN_INSN_INT insn_value,
|
||
unsigned int attrs,
|
||
unsigned int word_offset,
|
||
unsigned int start,
|
||
unsigned int length,
|
||
unsigned int word_length,
|
||
unsigned int total_length,
|
||
#if ! CGEN_INT_INSN_P
|
||
bfd_vma pc,
|
||
#else
|
||
bfd_vma pc ATTRIBUTE_UNUSED,
|
||
#endif
|
||
long *valuep)
|
||
{
|
||
long value, mask;
|
||
|
||
/* If LENGTH is zero, this operand doesn't contribute to the value
|
||
so give it a standard value of zero. */
|
||
if (length == 0)
|
||
{
|
||
*valuep = 0;
|
||
return 1;
|
||
}
|
||
|
||
if (word_length > 32)
|
||
abort ();
|
||
|
||
/* For architectures with insns smaller than the insn-base-bitsize,
|
||
word_length may be too big. */
|
||
if (cd->min_insn_bitsize < cd->base_insn_bitsize)
|
||
{
|
||
if (word_offset + word_length > total_length)
|
||
word_length = total_length - word_offset;
|
||
}
|
||
|
||
/* 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_INSN_LSB0_P)
|
||
value = insn_value >> ((word_offset + start + 1) - length);
|
||
else
|
||
value = insn_value >> (total_length - ( word_offset + start + length));
|
||
}
|
||
|
||
#if ! CGEN_INT_INSN_P
|
||
|
||
else
|
||
{
|
||
unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
|
||
|
||
if (word_length > 32)
|
||
abort ();
|
||
|
||
if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
|
||
return 0;
|
||
|
||
value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
|
||
}
|
||
|
||
#endif /* ! CGEN_INT_INSN_P */
|
||
|
||
/* Written this way to avoid undefined behaviour. */
|
||
mask = (((1L << (length - 1)) - 1) << 1) | 1;
|
||
|
||
value &= mask;
|
||
/* sign extend? */
|
||
if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
|
||
&& (value & (1L << (length - 1))))
|
||
value |= ~mask;
|
||
|
||
*valuep = value;
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Default insn extractor.
|
||
|
||
INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
|
||
The extracted fields are stored in FIELDS.
|
||
EX_INFO is used to handle reading variable length insns.
|
||
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
|
||
been called). */
|
||
|
||
static int
|
||
extract_insn_normal (CGEN_CPU_DESC cd,
|
||
const CGEN_INSN *insn,
|
||
CGEN_EXTRACT_INFO *ex_info,
|
||
CGEN_INSN_INT insn_value,
|
||
CGEN_FIELDS *fields,
|
||
bfd_vma pc)
|
||
{
|
||
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
||
const CGEN_SYNTAX_CHAR_TYPE *syn;
|
||
|
||
CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
|
||
|
||
CGEN_INIT_EXTRACT (cd);
|
||
|
||
for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
|
||
{
|
||
int length;
|
||
|
||
if (CGEN_SYNTAX_CHAR_P (*syn))
|
||
continue;
|
||
|
||
length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
|
||
ex_info, insn_value, fields, pc);
|
||
if (length <= 0)
|
||
return length;
|
||
}
|
||
|
||
/* We recognized and successfully extracted this insn. */
|
||
return CGEN_INSN_BITSIZE (insn);
|
||
}
|
||
|
||
/* Machine generated code added here. */
|
||
|
||
const char * openrisc_cgen_insert_operand
|
||
(CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
|
||
|
||
/* Main entry point for operand insertion.
|
||
|
||
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. It's also needed by GAS to insert operands that couldn't be
|
||
resolved during parsing. */
|
||
|
||
const char *
|
||
openrisc_cgen_insert_operand (CGEN_CPU_DESC cd,
|
||
int opindex,
|
||
CGEN_FIELDS * fields,
|
||
CGEN_INSN_BYTES_PTR buffer,
|
||
bfd_vma pc ATTRIBUTE_UNUSED)
|
||
{
|
||
const char * errmsg = NULL;
|
||
unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
|
||
|
||
switch (opindex)
|
||
{
|
||
case OPENRISC_OPERAND_ABS_26 :
|
||
{
|
||
long value = fields->f_abs26;
|
||
value = ((unsigned int) (pc) >> (2));
|
||
errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_ABS_ADDR), 0, 25, 26, 32, total_length, buffer);
|
||
}
|
||
break;
|
||
case OPENRISC_OPERAND_DISP_26 :
|
||
{
|
||
long value = fields->f_disp26;
|
||
value = ((int) (((value) - (pc))) >> (2));
|
||
errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, buffer);
|
||
}
|
||
break;
|
||
case OPENRISC_OPERAND_HI16 :
|
||
errmsg = insert_normal (cd, fields->f_simm16, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer);
|
||
break;
|
||
case OPENRISC_OPERAND_LO16 :
|
||
errmsg = insert_normal (cd, fields->f_lo16, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer);
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_23 :
|
||
errmsg = insert_normal (cd, fields->f_op4, 0, 0, 23, 3, 32, total_length, buffer);
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_3 :
|
||
errmsg = insert_normal (cd, fields->f_op5, 0, 0, 25, 5, 32, total_length, buffer);
|
||
break;
|
||
case OPENRISC_OPERAND_RA :
|
||
errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer);
|
||
break;
|
||
case OPENRISC_OPERAND_RB :
|
||
errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer);
|
||
break;
|
||
case OPENRISC_OPERAND_RD :
|
||
errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
|
||
break;
|
||
case OPENRISC_OPERAND_SIMM_16 :
|
||
errmsg = insert_normal (cd, fields->f_simm16, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer);
|
||
break;
|
||
case OPENRISC_OPERAND_UI16NC :
|
||
{
|
||
{
|
||
FLD (f_i16_2) = ((((unsigned int) (FLD (f_i16nc)) >> (11))) & (31));
|
||
FLD (f_i16_1) = ((FLD (f_i16nc)) & (2047));
|
||
}
|
||
errmsg = insert_normal (cd, fields->f_i16_1, 0, 0, 10, 11, 32, total_length, buffer);
|
||
if (errmsg)
|
||
break;
|
||
errmsg = insert_normal (cd, fields->f_i16_2, 0, 0, 25, 5, 32, total_length, buffer);
|
||
if (errmsg)
|
||
break;
|
||
}
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_16 :
|
||
errmsg = insert_normal (cd, fields->f_uimm16, 0, 0, 15, 16, 32, total_length, buffer);
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_5 :
|
||
errmsg = insert_normal (cd, fields->f_uimm5, 0, 0, 4, 5, 32, total_length, buffer);
|
||
break;
|
||
|
||
default :
|
||
/* xgettext:c-format */
|
||
fprintf (stderr, _("Unrecognized field %d while building insn.\n"),
|
||
opindex);
|
||
abort ();
|
||
}
|
||
|
||
return errmsg;
|
||
}
|
||
|
||
int openrisc_cgen_extract_operand
|
||
(CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
|
||
|
||
/* Main entry point for operand extraction.
|
||
The result is <= 0 for error, >0 for success.
|
||
??? Actual values aren't well defined right now.
|
||
|
||
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 `print_insn_normal', but keeping it
|
||
separate makes clear the interface between `print_insn_normal' and each of
|
||
the handlers. */
|
||
|
||
int
|
||
openrisc_cgen_extract_operand (CGEN_CPU_DESC cd,
|
||
int opindex,
|
||
CGEN_EXTRACT_INFO *ex_info,
|
||
CGEN_INSN_INT insn_value,
|
||
CGEN_FIELDS * fields,
|
||
bfd_vma pc)
|
||
{
|
||
/* Assume success (for those operands that are nops). */
|
||
int length = 1;
|
||
unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
|
||
|
||
switch (opindex)
|
||
{
|
||
case OPENRISC_OPERAND_ABS_26 :
|
||
{
|
||
long value;
|
||
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_ABS_ADDR), 0, 25, 26, 32, total_length, pc, & value);
|
||
value = ((value) << (2));
|
||
fields->f_abs26 = value;
|
||
}
|
||
break;
|
||
case OPENRISC_OPERAND_DISP_26 :
|
||
{
|
||
long value;
|
||
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, pc, & value);
|
||
value = ((((value) << (2))) + (pc));
|
||
fields->f_disp26 = value;
|
||
}
|
||
break;
|
||
case OPENRISC_OPERAND_HI16 :
|
||
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_simm16);
|
||
break;
|
||
case OPENRISC_OPERAND_LO16 :
|
||
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_lo16);
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_23 :
|
||
length = extract_normal (cd, ex_info, insn_value, 0, 0, 23, 3, 32, total_length, pc, & fields->f_op4);
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_3 :
|
||
length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_op5);
|
||
break;
|
||
case OPENRISC_OPERAND_RA :
|
||
length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2);
|
||
break;
|
||
case OPENRISC_OPERAND_RB :
|
||
length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3);
|
||
break;
|
||
case OPENRISC_OPERAND_RD :
|
||
length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
|
||
break;
|
||
case OPENRISC_OPERAND_SIMM_16 :
|
||
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_simm16);
|
||
break;
|
||
case OPENRISC_OPERAND_UI16NC :
|
||
{
|
||
length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_i16_1);
|
||
if (length <= 0) break;
|
||
length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_i16_2);
|
||
if (length <= 0) break;
|
||
{
|
||
FLD (f_i16nc) = openrisc_sign_extend_16bit (((((FLD (f_i16_2)) << (11))) | (FLD (f_i16_1))));
|
||
}
|
||
}
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_16 :
|
||
length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm16);
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_5 :
|
||
length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 5, 32, total_length, pc, & fields->f_uimm5);
|
||
break;
|
||
|
||
default :
|
||
/* xgettext:c-format */
|
||
fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"),
|
||
opindex);
|
||
abort ();
|
||
}
|
||
|
||
return length;
|
||
}
|
||
|
||
cgen_insert_fn * const openrisc_cgen_insert_handlers[] =
|
||
{
|
||
insert_insn_normal,
|
||
};
|
||
|
||
cgen_extract_fn * const openrisc_cgen_extract_handlers[] =
|
||
{
|
||
extract_insn_normal,
|
||
};
|
||
|
||
int openrisc_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
|
||
bfd_vma openrisc_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
|
||
|
||
/* Getting values from cgen_fields is handled by a collection of functions.
|
||
They are distinguished by the type of the VALUE argument they return.
|
||
TODO: floating point, inlining support, remove cases where result type
|
||
not appropriate. */
|
||
|
||
int
|
||
openrisc_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
int opindex,
|
||
const CGEN_FIELDS * fields)
|
||
{
|
||
int value;
|
||
|
||
switch (opindex)
|
||
{
|
||
case OPENRISC_OPERAND_ABS_26 :
|
||
value = fields->f_abs26;
|
||
break;
|
||
case OPENRISC_OPERAND_DISP_26 :
|
||
value = fields->f_disp26;
|
||
break;
|
||
case OPENRISC_OPERAND_HI16 :
|
||
value = fields->f_simm16;
|
||
break;
|
||
case OPENRISC_OPERAND_LO16 :
|
||
value = fields->f_lo16;
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_23 :
|
||
value = fields->f_op4;
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_3 :
|
||
value = fields->f_op5;
|
||
break;
|
||
case OPENRISC_OPERAND_RA :
|
||
value = fields->f_r2;
|
||
break;
|
||
case OPENRISC_OPERAND_RB :
|
||
value = fields->f_r3;
|
||
break;
|
||
case OPENRISC_OPERAND_RD :
|
||
value = fields->f_r1;
|
||
break;
|
||
case OPENRISC_OPERAND_SIMM_16 :
|
||
value = fields->f_simm16;
|
||
break;
|
||
case OPENRISC_OPERAND_UI16NC :
|
||
value = fields->f_i16nc;
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_16 :
|
||
value = fields->f_uimm16;
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_5 :
|
||
value = fields->f_uimm5;
|
||
break;
|
||
|
||
default :
|
||
/* xgettext:c-format */
|
||
fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"),
|
||
opindex);
|
||
abort ();
|
||
}
|
||
|
||
return value;
|
||
}
|
||
|
||
bfd_vma
|
||
openrisc_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
int opindex,
|
||
const CGEN_FIELDS * fields)
|
||
{
|
||
bfd_vma value;
|
||
|
||
switch (opindex)
|
||
{
|
||
case OPENRISC_OPERAND_ABS_26 :
|
||
value = fields->f_abs26;
|
||
break;
|
||
case OPENRISC_OPERAND_DISP_26 :
|
||
value = fields->f_disp26;
|
||
break;
|
||
case OPENRISC_OPERAND_HI16 :
|
||
value = fields->f_simm16;
|
||
break;
|
||
case OPENRISC_OPERAND_LO16 :
|
||
value = fields->f_lo16;
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_23 :
|
||
value = fields->f_op4;
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_3 :
|
||
value = fields->f_op5;
|
||
break;
|
||
case OPENRISC_OPERAND_RA :
|
||
value = fields->f_r2;
|
||
break;
|
||
case OPENRISC_OPERAND_RB :
|
||
value = fields->f_r3;
|
||
break;
|
||
case OPENRISC_OPERAND_RD :
|
||
value = fields->f_r1;
|
||
break;
|
||
case OPENRISC_OPERAND_SIMM_16 :
|
||
value = fields->f_simm16;
|
||
break;
|
||
case OPENRISC_OPERAND_UI16NC :
|
||
value = fields->f_i16nc;
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_16 :
|
||
value = fields->f_uimm16;
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_5 :
|
||
value = fields->f_uimm5;
|
||
break;
|
||
|
||
default :
|
||
/* xgettext:c-format */
|
||
fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"),
|
||
opindex);
|
||
abort ();
|
||
}
|
||
|
||
return value;
|
||
}
|
||
|
||
void openrisc_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
|
||
void openrisc_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma);
|
||
|
||
/* Stuffing values in cgen_fields is handled by a collection of functions.
|
||
They are distinguished by the type of the VALUE argument they accept.
|
||
TODO: floating point, inlining support, remove cases where argument type
|
||
not appropriate. */
|
||
|
||
void
|
||
openrisc_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
int opindex,
|
||
CGEN_FIELDS * fields,
|
||
int value)
|
||
{
|
||
switch (opindex)
|
||
{
|
||
case OPENRISC_OPERAND_ABS_26 :
|
||
fields->f_abs26 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_DISP_26 :
|
||
fields->f_disp26 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_HI16 :
|
||
fields->f_simm16 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_LO16 :
|
||
fields->f_lo16 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_23 :
|
||
fields->f_op4 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_3 :
|
||
fields->f_op5 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_RA :
|
||
fields->f_r2 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_RB :
|
||
fields->f_r3 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_RD :
|
||
fields->f_r1 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_SIMM_16 :
|
||
fields->f_simm16 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_UI16NC :
|
||
fields->f_i16nc = value;
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_16 :
|
||
fields->f_uimm16 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_5 :
|
||
fields->f_uimm5 = value;
|
||
break;
|
||
|
||
default :
|
||
/* xgettext:c-format */
|
||
fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"),
|
||
opindex);
|
||
abort ();
|
||
}
|
||
}
|
||
|
||
void
|
||
openrisc_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
int opindex,
|
||
CGEN_FIELDS * fields,
|
||
bfd_vma value)
|
||
{
|
||
switch (opindex)
|
||
{
|
||
case OPENRISC_OPERAND_ABS_26 :
|
||
fields->f_abs26 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_DISP_26 :
|
||
fields->f_disp26 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_HI16 :
|
||
fields->f_simm16 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_LO16 :
|
||
fields->f_lo16 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_23 :
|
||
fields->f_op4 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_OP_F_3 :
|
||
fields->f_op5 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_RA :
|
||
fields->f_r2 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_RB :
|
||
fields->f_r3 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_RD :
|
||
fields->f_r1 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_SIMM_16 :
|
||
fields->f_simm16 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_UI16NC :
|
||
fields->f_i16nc = value;
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_16 :
|
||
fields->f_uimm16 = value;
|
||
break;
|
||
case OPENRISC_OPERAND_UIMM_5 :
|
||
fields->f_uimm5 = value;
|
||
break;
|
||
|
||
default :
|
||
/* xgettext:c-format */
|
||
fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"),
|
||
opindex);
|
||
abort ();
|
||
}
|
||
}
|
||
|
||
/* Function to call before using the instruction builder tables. */
|
||
|
||
void
|
||
openrisc_cgen_init_ibld_table (CGEN_CPU_DESC cd)
|
||
{
|
||
cd->insert_handlers = & openrisc_cgen_insert_handlers[0];
|
||
cd->extract_handlers = & openrisc_cgen_extract_handlers[0];
|
||
|
||
cd->insert_operand = openrisc_cgen_insert_operand;
|
||
cd->extract_operand = openrisc_cgen_extract_operand;
|
||
|
||
cd->get_int_operand = openrisc_cgen_get_int_operand;
|
||
cd->set_int_operand = openrisc_cgen_set_int_operand;
|
||
cd->get_vma_operand = openrisc_cgen_get_vma_operand;
|
||
cd->set_vma_operand = openrisc_cgen_set_vma_operand;
|
||
}
|