mirror of
https://sourceware.org/git/binutils-gdb.git
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e9bffec9af
The CGEN support code in opcodes accesses instruction contents using a
couple of functions defined in cgen-opc.c: cgen_get_insn_value and
cgen_put_insn_value. These functions use the "instruction endianness"
in the CPU description to order the read/written bytes.
The process of writing an instruction to the object file is:
a) cgen_put_insn_value ;; Writes out the opcodes.
b) ARCH_cgen_insert_operand
insert_normal
insert_1
cgen_put_insn_value ;; Writes out the bytes of the
;; operand.
Likewise, the process of reading an instruction from the object file
is:
a) cgen_get_insn_value ;; Reads the opcodes.
b) ARCH_cgen_extract_operand
extract_normal
extract_1
cgen_get_insn_value ;; Reads in the bytes of the
;; operand.
As can be seen above, cgen_{get,put}_insn_value are used to both
process the instruction opcodes (the constant fields conforming the
base instruction) and also the values of the instruction operands,
such as immediates.
This is problematic for architectures in which the endianness of
instructions is different to the endianness of data. An example is
BPF, where instructions are always encoded big-endian but the data may
be either big or little.
This patch changes the cgen_{get,put}_insn_value functions in order to
get an extra argument with the endianness to use, and adapts the
existin callers to these functions in order to provide cd->endian or
cd->insn_endian, whatever appropriate. Callers like extract_1 and
insert_1 pass cd->endian (since they are reading/writing operand
values) while callers reading/writing the base instruction pass
cd->insn_endian instead.
A few little adjustments have been needed in some existing CGEN based
ports:
* The BPF assembler uses cgen_put_insn_value. It has been adapted to
pass the new endian argument.
* The mep port has code in mep.opc that uses cgen_{get,put}_insn_value.
It has been adapted to pass the new endianargument. Ditto for a
call in the assembler.
Tested with --enable-targets=all.
Regested in all supported targets.
No regressions.
include/ChangeLog:
2020-06-04 Jose E. Marchesi <jose.marchesi@oracle.com>
* opcode/cgen.h: Get an `endian' argument in both
cgen_get_insn_value and cgen_put_insn_value.
opcodes/ChangeLog:
2020-06-04 Jose E. Marchesi <jose.marchesi@oracle.com>
* cgen-opc.c (cgen_get_insn_value): Get an `endian' argument.
(cgen_put_insn_value): Likewise.
(cgen_lookup_insn): Pass endianness to cgen_{get,put}_insn_value.
* cgen-dis.in (print_insn): Likewise.
* cgen-ibld.in (insert_1): Likewise.
(insert_1): Likewise.
(insert_insn_normal): Likewise.
(extract_1): Likewise.
* bpf-dis.c: Regenerate.
* bpf-ibld.c: Likewise.
* bpf-ibld.c: Likewise.
* cgen-dis.in: Likewise.
* cgen-ibld.in: Likewise.
* cgen-opc.c: Likewise.
* epiphany-dis.c: Likewise.
* epiphany-ibld.c: Likewise.
* fr30-dis.c: Likewise.
* fr30-ibld.c: Likewise.
* frv-dis.c: Likewise.
* frv-ibld.c: Likewise.
* ip2k-dis.c: Likewise.
* ip2k-ibld.c: Likewise.
* iq2000-dis.c: Likewise.
* iq2000-ibld.c: Likewise.
* lm32-dis.c: Likewise.
* lm32-ibld.c: Likewise.
* m32c-dis.c: Likewise.
* m32c-ibld.c: Likewise.
* m32r-dis.c: Likewise.
* m32r-ibld.c: Likewise.
* mep-dis.c: Likewise.
* mep-ibld.c: Likewise.
* mt-dis.c: Likewise.
* mt-ibld.c: Likewise.
* or1k-dis.c: Likewise.
* or1k-ibld.c: Likewise.
* xc16x-dis.c: Likewise.
* xc16x-ibld.c: Likewise.
* xstormy16-dis.c: Likewise.
* xstormy16-ibld.c: Likewise.
gas/ChangeLog:
2020-06-04 Jose E. Marchesi <jose.marchesi@oracle.com>
* cgen.c (gas_cgen_finish_insn): Pass the endianness to
cgen_put_insn_value.
(gas_cgen_md_apply_fix): Likewise.
(gas_cgen_md_apply_fix): Likewise.
* config/tc-bpf.c (md_apply_fix): Pass data endianness to
cgen_put_insn_value.
* config/tc-mep.c (mep_check_ivc2_scheduling): Pass endianness to
cgen_put_insn_value.
cpu/ChangeLog:
2020-06-02 Jose E. Marchesi <jose.marchesi@oracle.com>
* mep.opc (print_slot_insn): Pass the insn endianness to
cgen_get_insn_value.
1617 lines
50 KiB
C
1617 lines
50 KiB
C
/* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */
|
||
/* Disassembler interface for targets using CGEN. -*- C -*-
|
||
CGEN: Cpu tools GENerator
|
||
|
||
THIS FILE IS MACHINE GENERATED WITH CGEN.
|
||
- the resultant file is machine generated, cgen-dis.in isn't
|
||
|
||
Copyright (C) 1996-2020 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 "disassemble.h"
|
||
#include "bfd.h"
|
||
#include "symcat.h"
|
||
#include "libiberty.h"
|
||
#include "mep-desc.h"
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||
#include "mep-opc.h"
|
||
#include "opintl.h"
|
||
|
||
/* Default text to print if an instruction isn't recognized. */
|
||
#define UNKNOWN_INSN_MSG _("*unknown*")
|
||
|
||
static void print_normal
|
||
(CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int);
|
||
static void print_address
|
||
(CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED;
|
||
static void print_keyword
|
||
(CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED;
|
||
static void print_insn_normal
|
||
(CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int);
|
||
static int print_insn
|
||
(CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned);
|
||
static int default_print_insn
|
||
(CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED;
|
||
static int read_insn
|
||
(CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *,
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unsigned long *);
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||
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/* -- disassembler routines inserted here. */
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||
|
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/* -- dis.c */
|
||
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#include "elf/mep.h"
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#include "elf-bfd.h"
|
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|
||
#define CGEN_VALIDATE_INSN_SUPPORTED
|
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|
||
static void print_tpreg (CGEN_CPU_DESC, PTR, CGEN_KEYWORD *, long, unsigned int);
|
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static void print_spreg (CGEN_CPU_DESC, PTR, CGEN_KEYWORD *, long, unsigned int);
|
||
|
||
static void
|
||
print_tpreg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, PTR dis_info,
|
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CGEN_KEYWORD *table ATTRIBUTE_UNUSED, long val ATTRIBUTE_UNUSED,
|
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unsigned int flags ATTRIBUTE_UNUSED)
|
||
{
|
||
disassemble_info *info = (disassemble_info *) dis_info;
|
||
|
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(*info->fprintf_func) (info->stream, "$tp");
|
||
}
|
||
|
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static void
|
||
print_spreg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, PTR dis_info,
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CGEN_KEYWORD *table ATTRIBUTE_UNUSED, long val ATTRIBUTE_UNUSED,
|
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unsigned int flags ATTRIBUTE_UNUSED)
|
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{
|
||
disassemble_info *info = (disassemble_info *) dis_info;
|
||
|
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(*info->fprintf_func) (info->stream, "$sp");
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}
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||
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/* begin-cop-ip-print-handlers */
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static void
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print_ivc2_cr (CGEN_CPU_DESC,
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void *,
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CGEN_KEYWORD *,
|
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long,
|
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unsigned int) ATTRIBUTE_UNUSED;
|
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static void
|
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print_ivc2_cr (CGEN_CPU_DESC cd,
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void *dis_info,
|
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CGEN_KEYWORD *keyword_table ATTRIBUTE_UNUSED,
|
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long value,
|
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unsigned int attrs)
|
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{
|
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print_keyword (cd, dis_info, & mep_cgen_opval_h_cr_ivc2, value, attrs);
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}
|
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static void
|
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print_ivc2_ccr (CGEN_CPU_DESC,
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void *,
|
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CGEN_KEYWORD *,
|
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long,
|
||
unsigned int) ATTRIBUTE_UNUSED;
|
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static void
|
||
print_ivc2_ccr (CGEN_CPU_DESC cd,
|
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void *dis_info,
|
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CGEN_KEYWORD *keyword_table ATTRIBUTE_UNUSED,
|
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long value,
|
||
unsigned int attrs)
|
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{
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print_keyword (cd, dis_info, & mep_cgen_opval_h_ccr_ivc2, value, attrs);
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}
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/* end-cop-ip-print-handlers */
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||
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/************************************************************\
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*********************** Experimental *************************
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\************************************************************/
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#undef CGEN_PRINT_INSN
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#define CGEN_PRINT_INSN mep_print_insn
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static int
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mep_print_vliw_insns (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info,
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bfd_byte *buf, int corelength, int copro1length,
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int copro2length ATTRIBUTE_UNUSED)
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{
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int i;
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int status = 0;
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/* char insnbuf[CGEN_MAX_INSN_SIZE]; */
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bfd_byte insnbuf[64];
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/* If corelength > 0 then there is a core insn present. It
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will be at the beginning of the buffer. After printing
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the core insn, we need to print the + on the next line. */
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if (corelength > 0)
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{
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int my_status = 0;
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for (i = 0; i < corelength; i++ )
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insnbuf[i] = buf[i];
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cd->isas = & MEP_CORE_ISA;
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my_status = print_insn (cd, pc, info, insnbuf, corelength);
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if (my_status != corelength)
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{
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(*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
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my_status = corelength;
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}
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status += my_status;
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/* Print the + to indicate that the following copro insn is */
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/* part of a vliw group. */
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if (copro1length > 0)
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(*info->fprintf_func) (info->stream, " + ");
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}
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/* Now all that is left to be processed is the coprocessor insns
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In vliw mode, there will always be one. Its positioning will
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be from byte corelength to byte corelength+copro1length -1.
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No need to check for existence. Also, the first vliw insn,
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will, as spec'd, always be at least as long as the core insn
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so we don't need to flush the buffer. */
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if (copro1length > 0)
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{
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int my_status = 0;
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for (i = corelength; i < corelength + copro1length; i++ )
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insnbuf[i - corelength] = buf[i];
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switch (copro1length)
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{
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case 0:
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break;
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case 2:
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cd->isas = & MEP_COP16_ISA;
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break;
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case 4:
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cd->isas = & MEP_COP32_ISA;
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break;
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case 6:
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cd->isas = & MEP_COP48_ISA;
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break;
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case 8:
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cd->isas = & MEP_COP64_ISA;
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break;
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default:
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/* Shouldn't be anything but 16,32,48,64. */
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break;
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}
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my_status = print_insn (cd, pc, info, insnbuf, copro1length);
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if (my_status != copro1length)
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{
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(*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
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my_status = copro1length;
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}
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status += my_status;
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}
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#if 0
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/* Now we need to process the second copro insn if it exists. We
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have no guarantee that the second copro insn will be longer
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than the first, so we have to flush the buffer if we are have
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a second copro insn to process. If present, this insn will
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be in the position from byte corelength+copro1length to byte
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corelength+copro1length+copro2length-1 (which better equal 8
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or else we're in big trouble. */
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if (copro2length > 0)
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{
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int my_status = 0;
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for (i = 0; i < 64 ; i++)
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insnbuf[i] = 0;
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for (i = corelength + copro1length; i < 64; i++)
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insnbuf[i - (corelength + copro1length)] = buf[i];
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switch (copro2length)
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{
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case 2:
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cd->isas = 1 << ISA_EXT_COP1_16;
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break;
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case 4:
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cd->isas = 1 << ISA_EXT_COP1_32;
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break;
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case 6:
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cd->isas = 1 << ISA_EXT_COP1_48;
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break;
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case 8:
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cd->isas = 1 << ISA_EXT_COP1_64;
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break;
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default:
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/* Shouldn't be anything but 16,32,48,64. */
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break;
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}
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my_status = print_insn (cd, pc, info, insnbuf, copro2length);
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if (my_status != copro2length)
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{
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(*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
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my_status = copro2length;
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}
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status += my_status;
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}
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#endif
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/* Status should now be the number of bytes that were printed
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which should be 4 for VLIW32 mode and 64 for VLIW64 mode. */
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if ((!MEP_VLIW64 && (status != 4)) || (MEP_VLIW64 && (status != 8)))
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return -1;
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else
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return status;
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}
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/* The two functions mep_examine_vliw[32,64]_insns are used find out
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which vliw combinaion (16 bit core with 48 bit copro, 32 bit core
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with 32 bit copro, etc.) is present. Later on, when internally
|
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parallel coprocessors are handled, only these functions should
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need to be changed.
|
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At this time only the following combinations are supported:
|
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VLIW32 Mode:
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16 bit core insn (core) and 16 bit coprocessor insn (cop1)
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32 bit core insn (core)
|
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32 bit coprocessor insn (cop1)
|
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Note: As of this time, I do not believe we have enough information
|
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to distinguish a 32 bit core insn from a 32 bit cop insn. Also,
|
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no 16 bit coprocessor insns have been specified.
|
||
|
||
VLIW64 Mode:
|
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16 bit core insn (core) and 48 bit coprocessor insn (cop1)
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32 bit core insn (core) and 32 bit coprocessor insn (cop1)
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64 bit coprocessor insn (cop1)
|
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|
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The framework for an internally parallel coprocessor is also
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present (2nd coprocessor insn is cop2), but at this time it
|
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is not used. This only appears to be valid in VLIW64 mode. */
|
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|
||
static int
|
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mep_examine_vliw32_insns (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
|
||
{
|
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int status;
|
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int buflength;
|
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int corebuflength;
|
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int cop1buflength;
|
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int cop2buflength;
|
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bfd_byte buf[CGEN_MAX_INSN_SIZE];
|
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char indicator16[1];
|
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char indicatorcop32[2];
|
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|
||
/* At this time we're not supporting internally parallel coprocessors,
|
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so cop2buflength will always be 0. */
|
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cop2buflength = 0;
|
||
|
||
/* Read in 32 bits. */
|
||
buflength = 4; /* VLIW insn spans 4 bytes. */
|
||
status = (*info->read_memory_func) (pc, buf, buflength, info);
|
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|
||
if (status != 0)
|
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{
|
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(*info->memory_error_func) (status, pc, info);
|
||
return -1;
|
||
}
|
||
|
||
/* Put the big endian representation of the bytes to be examined
|
||
in the temporary buffers for examination. */
|
||
|
||
if (info->endian == BFD_ENDIAN_BIG)
|
||
{
|
||
indicator16[0] = buf[0];
|
||
indicatorcop32[0] = buf[0];
|
||
indicatorcop32[1] = buf[1];
|
||
}
|
||
else
|
||
{
|
||
indicator16[0] = buf[1];
|
||
indicatorcop32[0] = buf[1];
|
||
indicatorcop32[1] = buf[0];
|
||
}
|
||
|
||
/* If the two high order bits are 00, 01 or 10, we have a 16 bit
|
||
core insn and a 48 bit copro insn. */
|
||
|
||
if ((indicator16[0] & 0x80) && (indicator16[0] & 0x40))
|
||
{
|
||
if ((indicatorcop32[0] & 0xf0) == 0xf0 && (indicatorcop32[1] & 0x07) == 0x07)
|
||
{
|
||
/* We have a 32 bit copro insn. */
|
||
corebuflength = 0;
|
||
/* All 4 4ytes are one copro insn. */
|
||
cop1buflength = 4;
|
||
}
|
||
else
|
||
{
|
||
/* We have a 32 bit core. */
|
||
corebuflength = 4;
|
||
cop1buflength = 0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* We have a 16 bit core insn and a 16 bit copro insn. */
|
||
corebuflength = 2;
|
||
cop1buflength = 2;
|
||
}
|
||
|
||
/* Now we have the distrubution set. Print them out. */
|
||
status = mep_print_vliw_insns (cd, pc, info, buf, corebuflength,
|
||
cop1buflength, cop2buflength);
|
||
|
||
return status;
|
||
}
|
||
|
||
static int
|
||
mep_examine_vliw64_insns (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
|
||
{
|
||
int status;
|
||
int buflength;
|
||
int corebuflength;
|
||
int cop1buflength;
|
||
int cop2buflength;
|
||
bfd_byte buf[CGEN_MAX_INSN_SIZE];
|
||
char indicator16[1];
|
||
char indicator64[4];
|
||
|
||
/* At this time we're not supporting internally parallel
|
||
coprocessors, so cop2buflength will always be 0. */
|
||
cop2buflength = 0;
|
||
|
||
/* Read in 64 bits. */
|
||
buflength = 8; /* VLIW insn spans 8 bytes. */
|
||
status = (*info->read_memory_func) (pc, buf, buflength, info);
|
||
|
||
if (status != 0)
|
||
{
|
||
(*info->memory_error_func) (status, pc, info);
|
||
return -1;
|
||
}
|
||
|
||
/* We have all 64 bits in the buffer now. We have to figure out
|
||
what combination of instruction sizes are present. The two
|
||
high order bits will indicate whether or not we have a 16 bit
|
||
core insn or not. If not, then we have to look at the 7,8th
|
||
bytes to tell whether we have 64 bit copro insn or a 32 bit
|
||
core insn with a 32 bit copro insn. Endianness will make a
|
||
difference here. */
|
||
|
||
/* Put the big endian representation of the bytes to be examined
|
||
in the temporary buffers for examination. */
|
||
|
||
/* indicator16[0] = buf[0]; */
|
||
if (info->endian == BFD_ENDIAN_BIG)
|
||
{
|
||
indicator16[0] = buf[0];
|
||
indicator64[0] = buf[0];
|
||
indicator64[1] = buf[1];
|
||
indicator64[2] = buf[2];
|
||
indicator64[3] = buf[3];
|
||
}
|
||
else
|
||
{
|
||
indicator16[0] = buf[1];
|
||
indicator64[0] = buf[1];
|
||
indicator64[1] = buf[0];
|
||
indicator64[2] = buf[3];
|
||
indicator64[3] = buf[2];
|
||
}
|
||
|
||
/* If the two high order bits are 00, 01 or 10, we have a 16 bit
|
||
core insn and a 48 bit copro insn. */
|
||
|
||
if ((indicator16[0] & 0x80) && (indicator16[0] & 0x40))
|
||
{
|
||
if ((indicator64[0] & 0xf0) == 0xf0 && (indicator64[1] & 0x07) == 0x07
|
||
&& ((indicator64[2] & 0xfe) != 0xf0 || (indicator64[3] & 0xf4) != 0))
|
||
{
|
||
/* We have a 64 bit copro insn. */
|
||
corebuflength = 0;
|
||
/* All 8 bytes are one copro insn. */
|
||
cop1buflength = 8;
|
||
}
|
||
else
|
||
{
|
||
/* We have a 32 bit core insn and a 32 bit copro insn. */
|
||
corebuflength = 4;
|
||
cop1buflength = 4;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* We have a 16 bit core insn and a 48 bit copro insn. */
|
||
corebuflength = 2;
|
||
cop1buflength = 6;
|
||
}
|
||
|
||
/* Now we have the distrubution set. Print them out. */
|
||
status = mep_print_vliw_insns (cd, pc, info, buf, corebuflength,
|
||
cop1buflength, cop2buflength);
|
||
|
||
return status;
|
||
}
|
||
|
||
#ifdef MEP_IVC2_SUPPORTED
|
||
|
||
static int
|
||
print_slot_insn (CGEN_CPU_DESC cd,
|
||
bfd_vma pc,
|
||
disassemble_info *info,
|
||
SLOTS_ATTR slot,
|
||
bfd_byte *buf)
|
||
{
|
||
const CGEN_INSN_LIST *insn_list;
|
||
CGEN_INSN_INT insn_value;
|
||
CGEN_EXTRACT_INFO ex_info;
|
||
|
||
insn_value = cgen_get_insn_value (cd, buf, 32, cd->insn_endian);
|
||
|
||
/* Fill in ex_info fields like read_insn would. Don't actually call
|
||
read_insn, since the incoming buffer is already read (and possibly
|
||
modified a la m32r). */
|
||
ex_info.valid = (1 << 8) - 1;
|
||
ex_info.dis_info = info;
|
||
ex_info.insn_bytes = buf;
|
||
|
||
/* The instructions are stored in hash lists.
|
||
Pick the first one and keep trying until we find the right one. */
|
||
|
||
insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
|
||
while (insn_list != NULL)
|
||
{
|
||
const CGEN_INSN *insn = insn_list->insn;
|
||
CGEN_FIELDS fields;
|
||
int length;
|
||
|
||
if ((CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_CONFIG)
|
||
&& CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_CONFIG) != MEP_CONFIG)
|
||
|| ! (CGEN_ATTR_CGEN_INSN_SLOTS_VALUE (CGEN_INSN_ATTRS (insn)) & (1 << slot)))
|
||
{
|
||
insn_list = CGEN_DIS_NEXT_INSN (insn_list);
|
||
continue;
|
||
}
|
||
|
||
if ((insn_value & CGEN_INSN_BASE_MASK (insn))
|
||
== CGEN_INSN_BASE_VALUE (insn))
|
||
{
|
||
/* Printing is handled in two passes. The first pass parses the
|
||
machine insn and extracts the fields. The second pass prints
|
||
them. */
|
||
|
||
length = CGEN_EXTRACT_FN (cd, insn)
|
||
(cd, insn, &ex_info, insn_value, &fields, pc);
|
||
|
||
/* Length < 0 -> error. */
|
||
if (length < 0)
|
||
return length;
|
||
if (length > 0)
|
||
{
|
||
CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
|
||
/* Length is in bits, result is in bytes. */
|
||
return length / 8;
|
||
}
|
||
}
|
||
|
||
insn_list = CGEN_DIS_NEXT_INSN (insn_list);
|
||
}
|
||
|
||
if (slot == SLOTS_P0S)
|
||
(*info->fprintf_func) (info->stream, "*unknown-p0s*");
|
||
else if (slot == SLOTS_P0)
|
||
(*info->fprintf_func) (info->stream, "*unknown-p0*");
|
||
else if (slot == SLOTS_P1)
|
||
(*info->fprintf_func) (info->stream, "*unknown-p1*");
|
||
else if (slot == SLOTS_C3)
|
||
(*info->fprintf_func) (info->stream, "*unknown-c3*");
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
mep_examine_ivc2_insns (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, bfd_vma pc ATTRIBUTE_UNUSED, disassemble_info *info ATTRIBUTE_UNUSED)
|
||
{
|
||
int status;
|
||
int buflength;
|
||
bfd_byte buf[8];
|
||
bfd_byte insn[8];
|
||
int e;
|
||
|
||
/* Read in 64 bits. */
|
||
buflength = 8; /* VLIW insn spans 8 bytes. */
|
||
status = (*info->read_memory_func) (pc, buf, buflength, info);
|
||
|
||
if (status != 0)
|
||
{
|
||
(*info->memory_error_func) (status, pc, info);
|
||
return -1;
|
||
}
|
||
|
||
if (info->endian == BFD_ENDIAN_LITTLE)
|
||
e = 1;
|
||
else
|
||
e = 0;
|
||
|
||
if (((unsigned char)buf[0^e] & 0xf0) < 0xc0)
|
||
{
|
||
/* <--00--><--11--><--22--><--33--><--44--><--55--><--66--><--77--> */
|
||
/* V1 [-----core-----][--------p0s-------][------------p1------------] */
|
||
|
||
print_insn (cd, pc, info, buf, 2);
|
||
|
||
insn[0^e] = 0;
|
||
insn[1^e] = buf[2^e];
|
||
insn[2^e] = buf[3^e];
|
||
insn[3^e] = buf[4^e] & 0xf0;
|
||
(*info->fprintf_func) (info->stream, " + ");
|
||
print_slot_insn (cd, pc, info, SLOTS_P0S, insn);
|
||
|
||
insn[0^e] = buf[4^e] << 4 | buf[5^e] >> 4;
|
||
insn[1^e] = buf[5^e] << 4 | buf[6^e] >> 4;
|
||
insn[2^e] = buf[6^e] << 4 | buf[7^e] >> 4;
|
||
insn[3^e] = buf[7^e] << 4;
|
||
(*info->fprintf_func) (info->stream, " + ");
|
||
print_slot_insn (cd, pc, info, SLOTS_P1, insn);
|
||
}
|
||
else if ((buf[0^e] & 0xf0) == 0xf0 && (buf[1^e] & 0x0f) == 0x07)
|
||
{
|
||
/* <--00--><--11--><--22--><--33--><--44--><--55--><--66--><--77--> */
|
||
/* V3 1111[--p0--]0111[--------p0--------][------------p1------------] */
|
||
/* 00000000111111112222222233333333 */
|
||
|
||
insn[0^e] = buf[0^e] << 4 | buf[1^e] >> 4;
|
||
insn[1^e] = buf[2^e];
|
||
insn[2^e] = buf[3^e];
|
||
insn[3^e] = buf[4^e] & 0xf0;
|
||
print_slot_insn (cd, pc, info, SLOTS_P0, insn);
|
||
|
||
insn[0^e] = buf[4^e] << 4 | buf[5^e] >> 4;
|
||
insn[1^e] = buf[5^e] << 4 | buf[6^e] >> 4;
|
||
insn[2^e] = buf[6^e] << 4 | buf[7^e] >> 4;
|
||
insn[3^e] = buf[7^e] << 4;
|
||
(*info->fprintf_func) (info->stream, " + ");
|
||
print_slot_insn (cd, pc, info, SLOTS_P1, insn);
|
||
}
|
||
else
|
||
{
|
||
/* <--00--><--11--><--22--><--33--><--44--><--55--><--66--><--77--> */
|
||
/* V2 [-------------core-------------]xxxx[------------p1------------] */
|
||
print_insn (cd, pc, info, buf, 4);
|
||
|
||
insn[0^e] = buf[4^e] << 4 | buf[5^e] >> 4;
|
||
insn[1^e] = buf[5^e] << 4 | buf[6^e] >> 4;
|
||
insn[2^e] = buf[6^e] << 4 | buf[7^e] >> 4;
|
||
insn[3^e] = buf[7^e] << 4;
|
||
(*info->fprintf_func) (info->stream, " + ");
|
||
print_slot_insn (cd, pc, info, SLOTS_P1, insn);
|
||
}
|
||
|
||
return 8;
|
||
}
|
||
|
||
#endif /* MEP_IVC2_SUPPORTED */
|
||
|
||
/* This is a hack. SID calls this to update the disassembler as the
|
||
CPU changes modes. */
|
||
static int mep_ivc2_disassemble_p = 0;
|
||
static int mep_ivc2_vliw_disassemble_p = 0;
|
||
|
||
void
|
||
mep_print_insn_set_ivc2_mode (int ivc2_p, int vliw_p, int cfg_idx);
|
||
void
|
||
mep_print_insn_set_ivc2_mode (int ivc2_p, int vliw_p, int cfg_idx)
|
||
{
|
||
mep_ivc2_disassemble_p = ivc2_p;
|
||
mep_ivc2_vliw_disassemble_p = vliw_p;
|
||
mep_config_index = cfg_idx;
|
||
}
|
||
|
||
static int
|
||
mep_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
|
||
{
|
||
int status;
|
||
int cop_type;
|
||
int ivc2 = 0;
|
||
static CGEN_ATTR_VALUE_BITSET_TYPE *ivc2_core_isa = NULL;
|
||
|
||
if (ivc2_core_isa == NULL)
|
||
{
|
||
/* IVC2 has some core-only coprocessor instructions. We
|
||
use COP32 to flag those, and COP64 for the VLIW ones,
|
||
since they have the same names. */
|
||
ivc2_core_isa = cgen_bitset_create (MAX_ISAS);
|
||
}
|
||
|
||
/* Extract and adapt to configuration number, if available. */
|
||
if (info->section && info->section->owner)
|
||
{
|
||
bfd *abfd = info->section->owner;
|
||
mep_config_index = abfd->tdata.elf_obj_data->elf_header->e_flags & EF_MEP_INDEX_MASK;
|
||
/* This instantly redefines MEP_CONFIG, MEP_OMASK, .... MEP_VLIW64 */
|
||
|
||
cop_type = abfd->tdata.elf_obj_data->elf_header->e_flags & EF_MEP_COP_MASK;
|
||
if (cop_type == EF_MEP_COP_IVC2)
|
||
ivc2 = 1;
|
||
}
|
||
|
||
/* Picking the right ISA bitmask for the current context is tricky. */
|
||
if (info->section)
|
||
{
|
||
if (info->section->flags & SEC_MEP_VLIW)
|
||
{
|
||
#ifdef MEP_IVC2_SUPPORTED
|
||
if (ivc2)
|
||
{
|
||
/* ivc2 has its own way of selecting its functions. */
|
||
cd->isas = & MEP_CORE_ISA;
|
||
status = mep_examine_ivc2_insns (cd, pc, info);
|
||
}
|
||
else
|
||
#endif
|
||
/* Are we in 32 or 64 bit vliw mode? */
|
||
if (MEP_VLIW64)
|
||
status = mep_examine_vliw64_insns (cd, pc, info);
|
||
else
|
||
status = mep_examine_vliw32_insns (cd, pc, info);
|
||
/* Both the above branches set their own isa bitmasks. */
|
||
}
|
||
else
|
||
{
|
||
if (ivc2)
|
||
{
|
||
cgen_bitset_clear (ivc2_core_isa);
|
||
cgen_bitset_union (ivc2_core_isa, &MEP_CORE_ISA, ivc2_core_isa);
|
||
cgen_bitset_union (ivc2_core_isa, &MEP_COP32_ISA, ivc2_core_isa);
|
||
cd->isas = ivc2_core_isa;
|
||
}
|
||
else
|
||
cd->isas = & MEP_CORE_ISA;
|
||
status = default_print_insn (cd, pc, info);
|
||
}
|
||
}
|
||
else /* sid or gdb */
|
||
{
|
||
#ifdef MEP_IVC2_SUPPORTED
|
||
if (mep_ivc2_disassemble_p)
|
||
{
|
||
if (mep_ivc2_vliw_disassemble_p)
|
||
{
|
||
cd->isas = & MEP_CORE_ISA;
|
||
status = mep_examine_ivc2_insns (cd, pc, info);
|
||
return status;
|
||
}
|
||
else
|
||
{
|
||
if (ivc2)
|
||
cd->isas = ivc2_core_isa;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
status = default_print_insn (cd, pc, info);
|
||
}
|
||
|
||
return status;
|
||
}
|
||
|
||
|
||
/* -- opc.c */
|
||
|
||
void mep_cgen_print_operand
|
||
(CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
|
||
|
||
/* Main entry point for printing operands.
|
||
XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
|
||
of dis-asm.h on cgen.h.
|
||
|
||
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. */
|
||
|
||
void
|
||
mep_cgen_print_operand (CGEN_CPU_DESC cd,
|
||
int opindex,
|
||
void * xinfo,
|
||
CGEN_FIELDS *fields,
|
||
void const *attrs ATTRIBUTE_UNUSED,
|
||
bfd_vma pc,
|
||
int length)
|
||
{
|
||
disassemble_info *info = (disassemble_info *) xinfo;
|
||
|
||
switch (opindex)
|
||
{
|
||
case MEP_OPERAND_ADDR24A4 :
|
||
print_normal (cd, info, fields->f_24u8a4n, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_C5RMUIMM20 :
|
||
print_normal (cd, info, fields->f_c5_rmuimm20, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_C5RNMUIMM24 :
|
||
print_normal (cd, info, fields->f_c5_rnmuimm24, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CALLNUM :
|
||
print_normal (cd, info, fields->f_callnum, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CCCC :
|
||
print_normal (cd, info, fields->f_rm, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_CCRN :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr, fields->f_ccrn, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_CDISP10 :
|
||
print_normal (cd, info, fields->f_cdisp10, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CDISP10A2 :
|
||
print_normal (cd, info, fields->f_cdisp10, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CDISP10A4 :
|
||
print_normal (cd, info, fields->f_cdisp10, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CDISP10A8 :
|
||
print_normal (cd, info, fields->f_cdisp10, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CDISP12 :
|
||
print_normal (cd, info, fields->f_12s20, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CIMM4 :
|
||
print_normal (cd, info, fields->f_rn, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_CIMM5 :
|
||
print_normal (cd, info, fields->f_5u24, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_CODE16 :
|
||
print_normal (cd, info, fields->f_16u16, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_CODE24 :
|
||
print_normal (cd, info, fields->f_24u4n, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CP_FLAG :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_CRN :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr, fields->f_crn, 0);
|
||
break;
|
||
case MEP_OPERAND_CRN64 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr64, fields->f_crn, 0);
|
||
break;
|
||
case MEP_OPERAND_CRNX :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr, fields->f_crnx, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_CRNX64 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr64, fields->f_crnx, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_CROC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr64, fields->f_ivc2_5u7, 0);
|
||
break;
|
||
case MEP_OPERAND_CROP :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr64, fields->f_ivc2_5u23, 0);
|
||
break;
|
||
case MEP_OPERAND_CRPC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr64, fields->f_ivc2_5u26, 0);
|
||
break;
|
||
case MEP_OPERAND_CRPP :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr64, fields->f_ivc2_5u18, 0);
|
||
break;
|
||
case MEP_OPERAND_CRQC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr64, fields->f_ivc2_5u21, 0);
|
||
break;
|
||
case MEP_OPERAND_CRQP :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr64, fields->f_ivc2_5u13, 0);
|
||
break;
|
||
case MEP_OPERAND_CSRN :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, fields->f_csrn, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_CSRN_IDX :
|
||
print_normal (cd, info, fields->f_csrn, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_DBG :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_DEPC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_EPC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_EXC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_HI :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IMM16P0 :
|
||
print_normal (cd, info, fields->f_ivc2_imm16p0, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM3P12 :
|
||
print_normal (cd, info, fields->f_ivc2_3u12, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM3P25 :
|
||
print_normal (cd, info, fields->f_ivc2_3u25, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM3P4 :
|
||
print_normal (cd, info, fields->f_ivc2_3u4, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM3P5 :
|
||
print_normal (cd, info, fields->f_ivc2_3u5, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM3P9 :
|
||
print_normal (cd, info, fields->f_ivc2_3u9, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM4P10 :
|
||
print_normal (cd, info, fields->f_ivc2_4u10, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM4P4 :
|
||
print_normal (cd, info, fields->f_ivc2_4u4, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM4P8 :
|
||
print_normal (cd, info, fields->f_ivc2_4u8, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM5P23 :
|
||
print_normal (cd, info, fields->f_ivc2_5u23, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM5P3 :
|
||
print_normal (cd, info, fields->f_ivc2_5u3, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM5P7 :
|
||
print_normal (cd, info, fields->f_ivc2_5u7, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM5P8 :
|
||
print_normal (cd, info, fields->f_ivc2_5u8, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM6P2 :
|
||
print_normal (cd, info, fields->f_ivc2_6u2, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM6P6 :
|
||
print_normal (cd, info, fields->f_ivc2_6u6, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM8P0 :
|
||
print_normal (cd, info, fields->f_ivc2_8u0, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM8P20 :
|
||
print_normal (cd, info, fields->f_ivc2_8u20, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IMM8P4 :
|
||
print_normal (cd, info, fields->f_ivc2_8u4, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IVC_X_0_2 :
|
||
print_normal (cd, info, fields->f_ivc2_2u0, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IVC_X_0_3 :
|
||
print_normal (cd, info, fields->f_ivc2_3u0, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IVC_X_0_4 :
|
||
print_normal (cd, info, fields->f_ivc2_4u0, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IVC_X_0_5 :
|
||
print_normal (cd, info, fields->f_ivc2_5u0, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IVC_X_6_1 :
|
||
print_normal (cd, info, fields->f_ivc2_1u6, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IVC_X_6_2 :
|
||
print_normal (cd, info, fields->f_ivc2_2u6, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IVC_X_6_3 :
|
||
print_normal (cd, info, fields->f_ivc2_3u6, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC0_0 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC0_1 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC0_2 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC0_3 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC0_4 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC0_5 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC0_6 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC0_7 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC1_0 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC1_1 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC1_2 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC1_3 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC1_4 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC1_5 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC1_6 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_ACC1_7 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_CC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_COFA0 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_COFA1 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_COFR0 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_COFR1 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_CSAR0 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2_CSAR1 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_IVC2C3CCRN :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, fields->f_ivc2_ccrn_c3, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_IVC2CCRN :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_ccr_ivc2, fields->f_ivc2_ccrn, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_IVC2CRN :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_cr64, fields->f_ivc2_crnx, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_IVC2RM :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_ivc2_crm, 0);
|
||
break;
|
||
case MEP_OPERAND_LO :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_LP :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_MB0 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_MB1 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_ME0 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_ME1 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_NPC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_OPT :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_PCABS24A2 :
|
||
print_address (cd, info, fields->f_24u5a2n, 0|(1<<CGEN_OPERAND_ABS_ADDR)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_PCREL12A2 :
|
||
print_address (cd, info, fields->f_12s4a2, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
|
||
break;
|
||
case MEP_OPERAND_PCREL17A2 :
|
||
print_address (cd, info, fields->f_17s16a2, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
|
||
break;
|
||
case MEP_OPERAND_PCREL24A2 :
|
||
print_address (cd, info, fields->f_24s5a2n, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_PCREL_ADDR)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_PCREL8A2 :
|
||
print_address (cd, info, fields->f_8s8a2, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
|
||
break;
|
||
case MEP_OPERAND_PSW :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_R0 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_R1 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_RL :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rl, 0);
|
||
break;
|
||
case MEP_OPERAND_RL5 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rl5, 0);
|
||
break;
|
||
case MEP_OPERAND_RM :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rm, 0);
|
||
break;
|
||
case MEP_OPERAND_RMA :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rm, 0);
|
||
break;
|
||
case MEP_OPERAND_RN :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn, 0);
|
||
break;
|
||
case MEP_OPERAND_RN3 :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn3, 0);
|
||
break;
|
||
case MEP_OPERAND_RN3C :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn3, 0);
|
||
break;
|
||
case MEP_OPERAND_RN3L :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn3, 0);
|
||
break;
|
||
case MEP_OPERAND_RN3S :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn3, 0);
|
||
break;
|
||
case MEP_OPERAND_RN3UC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn3, 0);
|
||
break;
|
||
case MEP_OPERAND_RN3UL :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn3, 0);
|
||
break;
|
||
case MEP_OPERAND_RN3US :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn3, 0);
|
||
break;
|
||
case MEP_OPERAND_RNC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn, 0);
|
||
break;
|
||
case MEP_OPERAND_RNL :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn, 0);
|
||
break;
|
||
case MEP_OPERAND_RNS :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn, 0);
|
||
break;
|
||
case MEP_OPERAND_RNUC :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn, 0);
|
||
break;
|
||
case MEP_OPERAND_RNUL :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn, 0);
|
||
break;
|
||
case MEP_OPERAND_RNUS :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_rn, 0);
|
||
break;
|
||
case MEP_OPERAND_SAR :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_SDISP16 :
|
||
print_normal (cd, info, fields->f_16s16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_SIMM16 :
|
||
print_normal (cd, info, fields->f_16s16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_SIMM16P0 :
|
||
print_normal (cd, info, fields->f_ivc2_simm16p0, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_SIMM6 :
|
||
print_normal (cd, info, fields->f_6s8, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_SIMM8 :
|
||
print_normal (cd, info, fields->f_8s8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELOC_IMPLIES_OVERFLOW), pc, length);
|
||
break;
|
||
case MEP_OPERAND_SIMM8P0 :
|
||
print_normal (cd, info, fields->f_ivc2_8s0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_SIMM8P20 :
|
||
print_normal (cd, info, fields->f_ivc2_8s20, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_SIMM8P4 :
|
||
print_normal (cd, info, fields->f_ivc2_8s4, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_SP :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_SPR :
|
||
print_spreg (cd, info, & mep_cgen_opval_h_gpr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_TP :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_TPR :
|
||
print_tpreg (cd, info, & mep_cgen_opval_h_gpr, 0, 0);
|
||
break;
|
||
case MEP_OPERAND_UDISP2 :
|
||
print_normal (cd, info, fields->f_2u6, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_UDISP7 :
|
||
print_normal (cd, info, fields->f_7u9, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_UDISP7A2 :
|
||
print_normal (cd, info, fields->f_7u9a2, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_UDISP7A4 :
|
||
print_normal (cd, info, fields->f_7u9a4, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_UIMM16 :
|
||
print_normal (cd, info, fields->f_16u16, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_UIMM2 :
|
||
print_normal (cd, info, fields->f_2u10, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_UIMM24 :
|
||
print_normal (cd, info, fields->f_24u8n, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
|
||
break;
|
||
case MEP_OPERAND_UIMM3 :
|
||
print_normal (cd, info, fields->f_3u5, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_UIMM4 :
|
||
print_normal (cd, info, fields->f_4u8, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_UIMM5 :
|
||
print_normal (cd, info, fields->f_5u8, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_UIMM7A4 :
|
||
print_normal (cd, info, fields->f_7u9a4, 0, pc, length);
|
||
break;
|
||
case MEP_OPERAND_ZERO :
|
||
print_normal (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
|
||
default :
|
||
/* xgettext:c-format */
|
||
opcodes_error_handler
|
||
(_("internal error: unrecognized field %d while printing insn"),
|
||
opindex);
|
||
abort ();
|
||
}
|
||
}
|
||
|
||
cgen_print_fn * const mep_cgen_print_handlers[] =
|
||
{
|
||
print_insn_normal,
|
||
};
|
||
|
||
|
||
void
|
||
mep_cgen_init_dis (CGEN_CPU_DESC cd)
|
||
{
|
||
mep_cgen_init_opcode_table (cd);
|
||
mep_cgen_init_ibld_table (cd);
|
||
cd->print_handlers = & mep_cgen_print_handlers[0];
|
||
cd->print_operand = mep_cgen_print_operand;
|
||
}
|
||
|
||
|
||
/* Default print handler. */
|
||
|
||
static void
|
||
print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
void *dis_info,
|
||
long value,
|
||
unsigned int attrs,
|
||
bfd_vma pc ATTRIBUTE_UNUSED,
|
||
int length ATTRIBUTE_UNUSED)
|
||
{
|
||
disassemble_info *info = (disassemble_info *) dis_info;
|
||
|
||
/* Print the operand as directed by the attributes. */
|
||
if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
|
||
; /* nothing to do */
|
||
else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
|
||
(*info->fprintf_func) (info->stream, "%ld", value);
|
||
else
|
||
(*info->fprintf_func) (info->stream, "0x%lx", value);
|
||
}
|
||
|
||
/* Default address handler. */
|
||
|
||
static void
|
||
print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
void *dis_info,
|
||
bfd_vma value,
|
||
unsigned int attrs,
|
||
bfd_vma pc ATTRIBUTE_UNUSED,
|
||
int length ATTRIBUTE_UNUSED)
|
||
{
|
||
disassemble_info *info = (disassemble_info *) dis_info;
|
||
|
||
/* Print the operand as directed by the attributes. */
|
||
if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
|
||
; /* Nothing to do. */
|
||
else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
|
||
(*info->print_address_func) (value, info);
|
||
else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
|
||
(*info->print_address_func) (value, info);
|
||
else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
|
||
(*info->fprintf_func) (info->stream, "%ld", (long) value);
|
||
else
|
||
(*info->fprintf_func) (info->stream, "0x%lx", (long) value);
|
||
}
|
||
|
||
/* Keyword print handler. */
|
||
|
||
static void
|
||
print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
void *dis_info,
|
||
CGEN_KEYWORD *keyword_table,
|
||
long value,
|
||
unsigned int attrs ATTRIBUTE_UNUSED)
|
||
{
|
||
disassemble_info *info = (disassemble_info *) dis_info;
|
||
const CGEN_KEYWORD_ENTRY *ke;
|
||
|
||
ke = cgen_keyword_lookup_value (keyword_table, value);
|
||
if (ke != NULL)
|
||
(*info->fprintf_func) (info->stream, "%s", ke->name);
|
||
else
|
||
(*info->fprintf_func) (info->stream, "???");
|
||
}
|
||
|
||
/* Default insn printer.
|
||
|
||
DIS_INFO is defined as `void *' so the disassembler needn't know anything
|
||
about disassemble_info. */
|
||
|
||
static void
|
||
print_insn_normal (CGEN_CPU_DESC cd,
|
||
void *dis_info,
|
||
const CGEN_INSN *insn,
|
||
CGEN_FIELDS *fields,
|
||
bfd_vma pc,
|
||
int length)
|
||
{
|
||
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
||
disassemble_info *info = (disassemble_info *) dis_info;
|
||
const CGEN_SYNTAX_CHAR_TYPE *syn;
|
||
|
||
CGEN_INIT_PRINT (cd);
|
||
|
||
for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
|
||
{
|
||
if (CGEN_SYNTAX_MNEMONIC_P (*syn))
|
||
{
|
||
(*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
|
||
continue;
|
||
}
|
||
if (CGEN_SYNTAX_CHAR_P (*syn))
|
||
{
|
||
(*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
|
||
continue;
|
||
}
|
||
|
||
/* We have an operand. */
|
||
mep_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
|
||
fields, CGEN_INSN_ATTRS (insn), pc, length);
|
||
}
|
||
}
|
||
|
||
/* Subroutine of print_insn. Reads an insn into the given buffers and updates
|
||
the extract info.
|
||
Returns 0 if all is well, non-zero otherwise. */
|
||
|
||
static int
|
||
read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
||
bfd_vma pc,
|
||
disassemble_info *info,
|
||
bfd_byte *buf,
|
||
int buflen,
|
||
CGEN_EXTRACT_INFO *ex_info,
|
||
unsigned long *insn_value)
|
||
{
|
||
int status = (*info->read_memory_func) (pc, buf, buflen, info);
|
||
|
||
if (status != 0)
|
||
{
|
||
(*info->memory_error_func) (status, pc, info);
|
||
return -1;
|
||
}
|
||
|
||
ex_info->dis_info = info;
|
||
ex_info->valid = (1 << buflen) - 1;
|
||
ex_info->insn_bytes = buf;
|
||
|
||
*insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
|
||
return 0;
|
||
}
|
||
|
||
/* Utility to print an insn.
|
||
BUF is the base part of the insn, target byte order, BUFLEN bytes long.
|
||
The result is the size of the insn in bytes or zero for an unknown insn
|
||
or -1 if an error occurs fetching data (memory_error_func will have
|
||
been called). */
|
||
|
||
static int
|
||
print_insn (CGEN_CPU_DESC cd,
|
||
bfd_vma pc,
|
||
disassemble_info *info,
|
||
bfd_byte *buf,
|
||
unsigned int buflen)
|
||
{
|
||
CGEN_INSN_INT insn_value;
|
||
const CGEN_INSN_LIST *insn_list;
|
||
CGEN_EXTRACT_INFO ex_info;
|
||
int basesize;
|
||
|
||
/* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
|
||
basesize = cd->base_insn_bitsize < buflen * 8 ?
|
||
cd->base_insn_bitsize : buflen * 8;
|
||
insn_value = cgen_get_insn_value (cd, buf, basesize, cd->insn_endian);
|
||
|
||
|
||
/* Fill in ex_info fields like read_insn would. Don't actually call
|
||
read_insn, since the incoming buffer is already read (and possibly
|
||
modified a la m32r). */
|
||
ex_info.valid = (1 << buflen) - 1;
|
||
ex_info.dis_info = info;
|
||
ex_info.insn_bytes = buf;
|
||
|
||
/* The instructions are stored in hash lists.
|
||
Pick the first one and keep trying until we find the right one. */
|
||
|
||
insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
|
||
while (insn_list != NULL)
|
||
{
|
||
const CGEN_INSN *insn = insn_list->insn;
|
||
CGEN_FIELDS fields;
|
||
int length;
|
||
unsigned long insn_value_cropped;
|
||
|
||
#ifdef CGEN_VALIDATE_INSN_SUPPORTED
|
||
/* Not needed as insn shouldn't be in hash lists if not supported. */
|
||
/* Supported by this cpu? */
|
||
if (! mep_cgen_insn_supported (cd, insn))
|
||
{
|
||
insn_list = CGEN_DIS_NEXT_INSN (insn_list);
|
||
continue;
|
||
}
|
||
#endif
|
||
|
||
/* Basic bit mask must be correct. */
|
||
/* ??? May wish to allow target to defer this check until the extract
|
||
handler. */
|
||
|
||
/* Base size may exceed this instruction's size. Extract the
|
||
relevant part from the buffer. */
|
||
if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
|
||
(unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
|
||
insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
|
||
info->endian == BFD_ENDIAN_BIG);
|
||
else
|
||
insn_value_cropped = insn_value;
|
||
|
||
if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
|
||
== CGEN_INSN_BASE_VALUE (insn))
|
||
{
|
||
/* Printing is handled in two passes. The first pass parses the
|
||
machine insn and extracts the fields. The second pass prints
|
||
them. */
|
||
|
||
/* Make sure the entire insn is loaded into insn_value, if it
|
||
can fit. */
|
||
if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
|
||
(unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
|
||
{
|
||
unsigned long full_insn_value;
|
||
int rc = read_insn (cd, pc, info, buf,
|
||
CGEN_INSN_BITSIZE (insn) / 8,
|
||
& ex_info, & full_insn_value);
|
||
if (rc != 0)
|
||
return rc;
|
||
length = CGEN_EXTRACT_FN (cd, insn)
|
||
(cd, insn, &ex_info, full_insn_value, &fields, pc);
|
||
}
|
||
else
|
||
length = CGEN_EXTRACT_FN (cd, insn)
|
||
(cd, insn, &ex_info, insn_value_cropped, &fields, pc);
|
||
|
||
/* Length < 0 -> error. */
|
||
if (length < 0)
|
||
return length;
|
||
if (length > 0)
|
||
{
|
||
CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
|
||
/* Length is in bits, result is in bytes. */
|
||
return length / 8;
|
||
}
|
||
}
|
||
|
||
insn_list = CGEN_DIS_NEXT_INSN (insn_list);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Default value for CGEN_PRINT_INSN.
|
||
The result is the size of the insn in bytes or zero for an unknown insn
|
||
or -1 if an error occured fetching bytes. */
|
||
|
||
#ifndef CGEN_PRINT_INSN
|
||
#define CGEN_PRINT_INSN default_print_insn
|
||
#endif
|
||
|
||
static int
|
||
default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
|
||
{
|
||
bfd_byte buf[CGEN_MAX_INSN_SIZE];
|
||
int buflen;
|
||
int status;
|
||
|
||
/* Attempt to read the base part of the insn. */
|
||
buflen = cd->base_insn_bitsize / 8;
|
||
status = (*info->read_memory_func) (pc, buf, buflen, info);
|
||
|
||
/* Try again with the minimum part, if min < base. */
|
||
if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
|
||
{
|
||
buflen = cd->min_insn_bitsize / 8;
|
||
status = (*info->read_memory_func) (pc, buf, buflen, info);
|
||
}
|
||
|
||
if (status != 0)
|
||
{
|
||
(*info->memory_error_func) (status, pc, info);
|
||
return -1;
|
||
}
|
||
|
||
return print_insn (cd, pc, info, buf, buflen);
|
||
}
|
||
|
||
/* Main entry point.
|
||
Print one instruction from PC on INFO->STREAM.
|
||
Return the size of the instruction (in bytes). */
|
||
|
||
typedef struct cpu_desc_list
|
||
{
|
||
struct cpu_desc_list *next;
|
||
CGEN_BITSET *isa;
|
||
int mach;
|
||
int endian;
|
||
int insn_endian;
|
||
CGEN_CPU_DESC cd;
|
||
} cpu_desc_list;
|
||
|
||
int
|
||
print_insn_mep (bfd_vma pc, disassemble_info *info)
|
||
{
|
||
static cpu_desc_list *cd_list = 0;
|
||
cpu_desc_list *cl = 0;
|
||
static CGEN_CPU_DESC cd = 0;
|
||
static CGEN_BITSET *prev_isa;
|
||
static int prev_mach;
|
||
static int prev_endian;
|
||
static int prev_insn_endian;
|
||
int length;
|
||
CGEN_BITSET *isa;
|
||
int mach;
|
||
int endian = (info->endian == BFD_ENDIAN_BIG
|
||
? CGEN_ENDIAN_BIG
|
||
: CGEN_ENDIAN_LITTLE);
|
||
int insn_endian = (info->endian_code == BFD_ENDIAN_BIG
|
||
? CGEN_ENDIAN_BIG
|
||
: CGEN_ENDIAN_LITTLE);
|
||
enum bfd_architecture arch;
|
||
|
||
/* ??? gdb will set mach but leave the architecture as "unknown" */
|
||
#ifndef CGEN_BFD_ARCH
|
||
#define CGEN_BFD_ARCH bfd_arch_mep
|
||
#endif
|
||
arch = info->arch;
|
||
if (arch == bfd_arch_unknown)
|
||
arch = CGEN_BFD_ARCH;
|
||
|
||
/* There's no standard way to compute the machine or isa number
|
||
so we leave it to the target. */
|
||
#ifdef CGEN_COMPUTE_MACH
|
||
mach = CGEN_COMPUTE_MACH (info);
|
||
#else
|
||
mach = info->mach;
|
||
#endif
|
||
|
||
#ifdef CGEN_COMPUTE_ISA
|
||
{
|
||
static CGEN_BITSET *permanent_isa;
|
||
|
||
if (!permanent_isa)
|
||
permanent_isa = cgen_bitset_create (MAX_ISAS);
|
||
isa = permanent_isa;
|
||
cgen_bitset_clear (isa);
|
||
cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
|
||
}
|
||
#else
|
||
isa = info->private_data;
|
||
#endif
|
||
|
||
/* If we've switched cpu's, try to find a handle we've used before */
|
||
if (cd
|
||
&& (cgen_bitset_compare (isa, prev_isa) != 0
|
||
|| mach != prev_mach
|
||
|| endian != prev_endian))
|
||
{
|
||
cd = 0;
|
||
for (cl = cd_list; cl; cl = cl->next)
|
||
{
|
||
if (cgen_bitset_compare (cl->isa, isa) == 0 &&
|
||
cl->mach == mach &&
|
||
cl->endian == endian)
|
||
{
|
||
cd = cl->cd;
|
||
prev_isa = cd->isas;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* If we haven't initialized yet, initialize the opcode table. */
|
||
if (! cd)
|
||
{
|
||
const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
|
||
const char *mach_name;
|
||
|
||
if (!arch_type)
|
||
abort ();
|
||
mach_name = arch_type->printable_name;
|
||
|
||
prev_isa = cgen_bitset_copy (isa);
|
||
prev_mach = mach;
|
||
prev_endian = endian;
|
||
prev_insn_endian = insn_endian;
|
||
cd = mep_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
|
||
CGEN_CPU_OPEN_BFDMACH, mach_name,
|
||
CGEN_CPU_OPEN_ENDIAN, prev_endian,
|
||
CGEN_CPU_OPEN_INSN_ENDIAN, prev_insn_endian,
|
||
CGEN_CPU_OPEN_END);
|
||
if (!cd)
|
||
abort ();
|
||
|
||
/* Save this away for future reference. */
|
||
cl = xmalloc (sizeof (struct cpu_desc_list));
|
||
cl->cd = cd;
|
||
cl->isa = prev_isa;
|
||
cl->mach = mach;
|
||
cl->endian = endian;
|
||
cl->next = cd_list;
|
||
cd_list = cl;
|
||
|
||
mep_cgen_init_dis (cd);
|
||
}
|
||
|
||
/* We try to have as much common code as possible.
|
||
But at this point some targets need to take over. */
|
||
/* ??? Some targets may need a hook elsewhere. Try to avoid this,
|
||
but if not possible try to move this hook elsewhere rather than
|
||
have two hooks. */
|
||
length = CGEN_PRINT_INSN (cd, pc, info);
|
||
if (length > 0)
|
||
return length;
|
||
if (length < 0)
|
||
return -1;
|
||
|
||
(*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
|
||
return cd->default_insn_bitsize / 8;
|
||
}
|