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Retro68/binutils/opcodes/lm32-ibld.c

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update to binutils 2.31.1
2018-12-28 15:25:28 +00:00
/* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
/* Instruction building/extraction support for lm32. -*- C -*-
THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
- the resultant file is machine generated, cgen-ibld.in isn't
binutils 2.39
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Copyright (C) 1996-2022 Free Software Foundation, Inc.
add binutils-2.20.1
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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 "lm32-desc.h"
#include "lm32-opc.h"
Update binutils to version 2.24 to work around a build problem
2014-09-12 22:14:23 +00:00
#include "cgen/basic-modes.h"
add binutils-2.20.1
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#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)
{
binutils 2.39
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unsigned long x, mask;
add binutils-2.20.1
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int shift;
binutils 2.39
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x = cgen_get_insn_value (cd, bufp, word_length, cd->endian);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
/* Written this way to avoid undefined behaviour. */
binutils 2.39
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mask = (1UL << (length - 1) << 1) - 1;
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
if (CGEN_INSN_LSB0_P)
shift = (start + 1) - length;
else
shift = (word_length - (start + length));
x = (x & ~(mask << shift)) | ((value & mask) << shift);
binutils 2.39
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cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x, cd->endian);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
}
#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];
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unsigned long mask;
add binutils-2.20.1
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/* If LENGTH is zero, this operand doesn't contribute to the value. */
if (length == 0)
return NULL;
binutils 2.39
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/* Written this way to avoid undefined behaviour. */
mask = (1UL << (length - 1) << 1) - 1;
Update binutils to version 2.24 to work around a build problem
2014-09-12 22:14:23 +00:00
if (word_length > 8 * sizeof (CGEN_INSN_INT))
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
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))
{
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long minval = - (1UL << (length - 1));
add binutils-2.20.1
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unsigned long maxval = mask;
upgrade gcc to 6.3.0, binutils to 2.28
2017-04-10 11:32:00 +00:00
add binutils-2.20.1
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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))
{
binutils 2.39
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long minval = - (1UL << (length - 1));
long maxval = (1UL << (length - 1)) - 1;
upgrade gcc to 6.3.0, binutils to 2.28
2017-04-10 11:32:00 +00:00
add binutils-2.20.1
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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
{
upgrade gcc to 6.3.0, binutils to 2.28
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int shift_within_word, shift_to_word, shift;
add binutils-2.20.1
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upgrade gcc to 6.3.0, binutils to 2.28
2017-04-10 11:32:00 +00:00
/* How to shift the value to BIT0 of the word. */
shift_to_word = total_length - (word_offset + word_length);
/* How to shift the value to the field within the word. */
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
if (CGEN_INSN_LSB0_P)
upgrade gcc to 6.3.0, binutils to 2.28
2017-04-10 11:32:00 +00:00
shift_within_word = start + 1 - length;
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
else
upgrade gcc to 6.3.0, binutils to 2.28
2017-04-10 11:32:00 +00:00
shift_within_word = word_length - start - length;
/* The total SHIFT, then mask in the value. */
shift = shift_to_word + shift_within_word;
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
*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,
binutils 2.39
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(unsigned) CGEN_FIELDS_BITSIZE (fields)),
value, cd->insn_endian);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
#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. */
binutils 2.39
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CGEN_INSN_INT mask = length == 0 ? 0 : (1UL << (length - 1) << 1) - 1;
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
*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;
binutils 2.39
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x = cgen_get_insn_value (cd, bufp, word_length, cd->endian);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
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;
}
Update binutils to version 2.24 to work around a build problem
2014-09-12 22:14:23 +00:00
if (word_length > 8 * sizeof (CGEN_INSN_INT))
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
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;
Update binutils to version 2.24 to work around a build problem
2014-09-12 22:14:23 +00:00
if (word_length > 8 * sizeof (CGEN_INSN_INT))
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
abort ();
if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
binutils 2.39
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{
*valuep = 0;
return 0;
}
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
}
#endif /* ! CGEN_INT_INSN_P */
/* Written this way to avoid undefined behaviour. */
binutils 2.39
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mask = (1UL << (length - 1) << 1) - 1;
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
value &= mask;
/* sign extend? */
if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
binutils 2.39
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&& (value & (1UL << (length - 1))))
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
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 * lm32_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 *
lm32_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 LM32_OPERAND_BRANCH :
{
long value = fields->f_branch;
Update binutils to version 2.24 to work around a build problem
2014-09-12 22:14:23 +00:00
value = ((SI) (((value) - (pc))) >> (2));
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 15, 16, 32, total_length, buffer);
}
break;
case LM32_OPERAND_CALL :
{
long value = fields->f_call;
Update binutils to version 2.24 to work around a build problem
2014-09-12 22:14:23 +00:00
value = ((SI) (((value) - (pc))) >> (2));
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, buffer);
}
break;
case LM32_OPERAND_CSR :
errmsg = insert_normal (cd, fields->f_csr, 0, 0, 25, 5, 32, total_length, buffer);
break;
case LM32_OPERAND_EXCEPTION :
errmsg = insert_normal (cd, fields->f_exception, 0, 0, 25, 26, 32, total_length, buffer);
break;
case LM32_OPERAND_GOT16 :
errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer);
break;
case LM32_OPERAND_GOTOFFHI16 :
errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer);
break;
case LM32_OPERAND_GOTOFFLO16 :
errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer);
break;
case LM32_OPERAND_GP16 :
errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer);
break;
case LM32_OPERAND_HI16 :
errmsg = insert_normal (cd, fields->f_uimm, 0, 0, 15, 16, 32, total_length, buffer);
break;
case LM32_OPERAND_IMM :
errmsg = insert_normal (cd, fields->f_imm, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, buffer);
break;
case LM32_OPERAND_LO16 :
errmsg = insert_normal (cd, fields->f_uimm, 0, 0, 15, 16, 32, total_length, buffer);
break;
case LM32_OPERAND_R0 :
errmsg = insert_normal (cd, fields->f_r0, 0, 0, 25, 5, 32, total_length, buffer);
break;
case LM32_OPERAND_R1 :
errmsg = insert_normal (cd, fields->f_r1, 0, 0, 20, 5, 32, total_length, buffer);
break;
case LM32_OPERAND_R2 :
errmsg = insert_normal (cd, fields->f_r2, 0, 0, 15, 5, 32, total_length, buffer);
break;
case LM32_OPERAND_SHIFT :
errmsg = insert_normal (cd, fields->f_shift, 0, 0, 4, 5, 32, total_length, buffer);
break;
case LM32_OPERAND_UIMM :
errmsg = insert_normal (cd, fields->f_uimm, 0, 0, 15, 16, 32, total_length, buffer);
break;
case LM32_OPERAND_USER :
errmsg = insert_normal (cd, fields->f_user, 0, 0, 10, 11, 32, total_length, buffer);
break;
default :
/* xgettext:c-format */
update to binutils 2.31.1
2018-12-28 15:25:28 +00:00
opcodes_error_handler
(_("internal error: unrecognized field %d while building insn"),
opindex);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
abort ();
}
return errmsg;
}
int lm32_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
lm32_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 LM32_OPERAND_BRANCH :
{
long value;
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 15, 16, 32, total_length, pc, & value);
binutils 2.39
2022-10-27 18:45:45 +00:00
value = ((pc) + (((((((((value) & (65535))) << (2))) ^ (131072))) - (131072))));
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
fields->f_branch = value;
}
break;
case LM32_OPERAND_CALL :
{
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);
binutils 2.39
2022-10-27 18:45:45 +00:00
value = ((pc) + (((((((((value) & (67108863))) << (2))) ^ (134217728))) - (134217728))));
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
fields->f_call = value;
}
break;
case LM32_OPERAND_CSR :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_csr);
break;
case LM32_OPERAND_EXCEPTION :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 26, 32, total_length, pc, & fields->f_exception);
break;
case LM32_OPERAND_GOT16 :
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm);
break;
case LM32_OPERAND_GOTOFFHI16 :
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm);
break;
case LM32_OPERAND_GOTOFFLO16 :
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm);
break;
case LM32_OPERAND_GP16 :
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm);
break;
case LM32_OPERAND_HI16 :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm);
break;
case LM32_OPERAND_IMM :
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 15, 16, 32, total_length, pc, & fields->f_imm);
break;
case LM32_OPERAND_LO16 :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm);
break;
case LM32_OPERAND_R0 :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r0);
break;
case LM32_OPERAND_R1 :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r1);
break;
case LM32_OPERAND_R2 :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r2);
break;
case LM32_OPERAND_SHIFT :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 5, 32, total_length, pc, & fields->f_shift);
break;
case LM32_OPERAND_UIMM :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm);
break;
case LM32_OPERAND_USER :
length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_user);
break;
default :
/* xgettext:c-format */
update to binutils 2.31.1
2018-12-28 15:25:28 +00:00
opcodes_error_handler
(_("internal error: unrecognized field %d while decoding insn"),
opindex);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
abort ();
}
return length;
}
upgrade gcc to 6.3.0, binutils to 2.28
2017-04-10 11:32:00 +00:00
cgen_insert_fn * const lm32_cgen_insert_handlers[] =
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
{
insert_insn_normal,
};
upgrade gcc to 6.3.0, binutils to 2.28
2017-04-10 11:32:00 +00:00
cgen_extract_fn * const lm32_cgen_extract_handlers[] =
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
{
extract_insn_normal,
};
int lm32_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
bfd_vma lm32_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
lm32_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
int opindex,
const CGEN_FIELDS * fields)
{
int value;
switch (opindex)
{
case LM32_OPERAND_BRANCH :
value = fields->f_branch;
break;
case LM32_OPERAND_CALL :
value = fields->f_call;
break;
case LM32_OPERAND_CSR :
value = fields->f_csr;
break;
case LM32_OPERAND_EXCEPTION :
value = fields->f_exception;
break;
case LM32_OPERAND_GOT16 :
value = fields->f_imm;
break;
case LM32_OPERAND_GOTOFFHI16 :
value = fields->f_imm;
break;
case LM32_OPERAND_GOTOFFLO16 :
value = fields->f_imm;
break;
case LM32_OPERAND_GP16 :
value = fields->f_imm;
break;
case LM32_OPERAND_HI16 :
value = fields->f_uimm;
break;
case LM32_OPERAND_IMM :
value = fields->f_imm;
break;
case LM32_OPERAND_LO16 :
value = fields->f_uimm;
break;
case LM32_OPERAND_R0 :
value = fields->f_r0;
break;
case LM32_OPERAND_R1 :
value = fields->f_r1;
break;
case LM32_OPERAND_R2 :
value = fields->f_r2;
break;
case LM32_OPERAND_SHIFT :
value = fields->f_shift;
break;
case LM32_OPERAND_UIMM :
value = fields->f_uimm;
break;
case LM32_OPERAND_USER :
value = fields->f_user;
break;
default :
/* xgettext:c-format */
update to binutils 2.31.1
2018-12-28 15:25:28 +00:00
opcodes_error_handler
(_("internal error: unrecognized field %d while getting int operand"),
opindex);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
abort ();
}
return value;
}
bfd_vma
lm32_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
int opindex,
const CGEN_FIELDS * fields)
{
bfd_vma value;
switch (opindex)
{
case LM32_OPERAND_BRANCH :
value = fields->f_branch;
break;
case LM32_OPERAND_CALL :
value = fields->f_call;
break;
case LM32_OPERAND_CSR :
value = fields->f_csr;
break;
case LM32_OPERAND_EXCEPTION :
value = fields->f_exception;
break;
case LM32_OPERAND_GOT16 :
value = fields->f_imm;
break;
case LM32_OPERAND_GOTOFFHI16 :
value = fields->f_imm;
break;
case LM32_OPERAND_GOTOFFLO16 :
value = fields->f_imm;
break;
case LM32_OPERAND_GP16 :
value = fields->f_imm;
break;
case LM32_OPERAND_HI16 :
value = fields->f_uimm;
break;
case LM32_OPERAND_IMM :
value = fields->f_imm;
break;
case LM32_OPERAND_LO16 :
value = fields->f_uimm;
break;
case LM32_OPERAND_R0 :
value = fields->f_r0;
break;
case LM32_OPERAND_R1 :
value = fields->f_r1;
break;
case LM32_OPERAND_R2 :
value = fields->f_r2;
break;
case LM32_OPERAND_SHIFT :
value = fields->f_shift;
break;
case LM32_OPERAND_UIMM :
value = fields->f_uimm;
break;
case LM32_OPERAND_USER :
value = fields->f_user;
break;
default :
/* xgettext:c-format */
update to binutils 2.31.1
2018-12-28 15:25:28 +00:00
opcodes_error_handler
(_("internal error: unrecognized field %d while getting vma operand"),
opindex);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
abort ();
}
return value;
}
void lm32_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
void lm32_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
lm32_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
int opindex,
CGEN_FIELDS * fields,
int value)
{
switch (opindex)
{
case LM32_OPERAND_BRANCH :
fields->f_branch = value;
break;
case LM32_OPERAND_CALL :
fields->f_call = value;
break;
case LM32_OPERAND_CSR :
fields->f_csr = value;
break;
case LM32_OPERAND_EXCEPTION :
fields->f_exception = value;
break;
case LM32_OPERAND_GOT16 :
fields->f_imm = value;
break;
case LM32_OPERAND_GOTOFFHI16 :
fields->f_imm = value;
break;
case LM32_OPERAND_GOTOFFLO16 :
fields->f_imm = value;
break;
case LM32_OPERAND_GP16 :
fields->f_imm = value;
break;
case LM32_OPERAND_HI16 :
fields->f_uimm = value;
break;
case LM32_OPERAND_IMM :
fields->f_imm = value;
break;
case LM32_OPERAND_LO16 :
fields->f_uimm = value;
break;
case LM32_OPERAND_R0 :
fields->f_r0 = value;
break;
case LM32_OPERAND_R1 :
fields->f_r1 = value;
break;
case LM32_OPERAND_R2 :
fields->f_r2 = value;
break;
case LM32_OPERAND_SHIFT :
fields->f_shift = value;
break;
case LM32_OPERAND_UIMM :
fields->f_uimm = value;
break;
case LM32_OPERAND_USER :
fields->f_user = value;
break;
default :
/* xgettext:c-format */
update to binutils 2.31.1
2018-12-28 15:25:28 +00:00
opcodes_error_handler
(_("internal error: unrecognized field %d while setting int operand"),
opindex);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
abort ();
}
}
void
lm32_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
int opindex,
CGEN_FIELDS * fields,
bfd_vma value)
{
switch (opindex)
{
case LM32_OPERAND_BRANCH :
fields->f_branch = value;
break;
case LM32_OPERAND_CALL :
fields->f_call = value;
break;
case LM32_OPERAND_CSR :
fields->f_csr = value;
break;
case LM32_OPERAND_EXCEPTION :
fields->f_exception = value;
break;
case LM32_OPERAND_GOT16 :
fields->f_imm = value;
break;
case LM32_OPERAND_GOTOFFHI16 :
fields->f_imm = value;
break;
case LM32_OPERAND_GOTOFFLO16 :
fields->f_imm = value;
break;
case LM32_OPERAND_GP16 :
fields->f_imm = value;
break;
case LM32_OPERAND_HI16 :
fields->f_uimm = value;
break;
case LM32_OPERAND_IMM :
fields->f_imm = value;
break;
case LM32_OPERAND_LO16 :
fields->f_uimm = value;
break;
case LM32_OPERAND_R0 :
fields->f_r0 = value;
break;
case LM32_OPERAND_R1 :
fields->f_r1 = value;
break;
case LM32_OPERAND_R2 :
fields->f_r2 = value;
break;
case LM32_OPERAND_SHIFT :
fields->f_shift = value;
break;
case LM32_OPERAND_UIMM :
fields->f_uimm = value;
break;
case LM32_OPERAND_USER :
fields->f_user = value;
break;
default :
/* xgettext:c-format */
update to binutils 2.31.1
2018-12-28 15:25:28 +00:00
opcodes_error_handler
(_("internal error: unrecognized field %d while setting vma operand"),
opindex);
add binutils-2.20.1
2012-03-26 19:18:29 +00:00
abort ();
}
}
/* Function to call before using the instruction builder tables. */
void
lm32_cgen_init_ibld_table (CGEN_CPU_DESC cd)
{
cd->insert_handlers = & lm32_cgen_insert_handlers[0];
cd->extract_handlers = & lm32_cgen_extract_handlers[0];
cd->insert_operand = lm32_cgen_insert_operand;
cd->extract_operand = lm32_cgen_extract_operand;
cd->get_int_operand = lm32_cgen_get_int_operand;
cd->set_int_operand = lm32_cgen_set_int_operand;
cd->get_vma_operand = lm32_cgen_get_vma_operand;
cd->set_vma_operand = lm32_cgen_set_vma_operand;
}
Reference in New Issue Copy Permalink