bd2f2e55ad
* mep-*: New support for Toshiba Media Processor (MeP).
* Makefile.am: Add support for MeP.
* configure.in: Likewise.
* disassemble.c: Likewise.
* Makefile.in: Regenerated.
* configure: Regenerated.
1206 lines
36 KiB
C
1206 lines
36 KiB
C
/* Disassembler interface for targets using CGEN. -*- C -*-
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||
CGEN: Cpu tools GENerator
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THIS FILE IS MACHINE GENERATED WITH CGEN.
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- the resultant file is machine generated, cgen-dis.in isn't
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Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005
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Free Software Foundation, Inc.
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This file is part of the GNU Binutils and GDB, the GNU debugger.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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/* ??? Eventually more and more of this stuff can go to cpu-independent files.
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Keep that in mind. */
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#include "sysdep.h"
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#include <stdio.h>
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#include "ansidecl.h"
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#include "dis-asm.h"
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#include "bfd.h"
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#include "symcat.h"
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#include "libiberty.h"
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#include "mep-desc.h"
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#include "mep-opc.h"
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#include "opintl.h"
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/* Default text to print if an instruction isn't recognized. */
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#define UNKNOWN_INSN_MSG _("*unknown*")
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static void print_normal
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(CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int);
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static void print_address
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(CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED;
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static void print_keyword
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(CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED;
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static void print_insn_normal
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(CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int);
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static int print_insn
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(CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned);
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static int default_print_insn
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(CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED;
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static int read_insn
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(CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *,
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unsigned long *);
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/* -- disassembler routines inserted here. */
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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);
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static void
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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)
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{
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disassemble_info *info = (disassemble_info *) dis_info;
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(*info->fprintf_func) (info->stream, "$tp");
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}
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static void
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print_spreg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, PTR dis_info,
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CGEN_KEYWORD *table ATTRIBUTE_UNUSED, long val ATTRIBUTE_UNUSED,
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unsigned int flags ATTRIBUTE_UNUSED)
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{
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disassemble_info *info = (disassemble_info *) dis_info;
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(*info->fprintf_func) (info->stream, "$sp");
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}
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/* begin-cop-ip-print-handlers */
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static void
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print_fmax_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_fmax, value, attrs);
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}
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static void
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print_fmax_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,
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unsigned int attrs)
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{
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print_keyword (cd, dis_info, & mep_cgen_opval_h_ccr_fmax, value, attrs);
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}
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/* end-cop-ip-print-handlers */
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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.
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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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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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{
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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;
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/* Read in 32 bits. */
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buflength = 4; /* VLIW insn spans 4 bytes. */
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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);
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return -1;
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}
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/* Put the big endian representation of the bytes to be examined
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in the temporary buffers for examination. */
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if (info->endian == BFD_ENDIAN_BIG)
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{
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indicator16[0] = buf[0];
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indicatorcop32[0] = buf[0];
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indicatorcop32[1] = buf[1];
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}
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else
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{
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indicator16[0] = buf[1];
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indicatorcop32[0] = buf[1];
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indicatorcop32[1] = buf[0];
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}
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/* If the two high order bits are 00, 01 or 10, we have a 16 bit
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core insn and a 48 bit copro insn. */
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if ((indicator16[0] & 0x80) && (indicator16[0] & 0x40))
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{
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if ((indicatorcop32[0] & 0xf0) == 0xf0 && (indicatorcop32[1] & 0x07) == 0x07)
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{
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/* We have a 32 bit copro insn. */
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corebuflength = 0;
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/* All 4 4ytes are one copro insn. */
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cop1buflength = 4;
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}
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else
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{
|
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/* We have a 32 bit core. */
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corebuflength = 4;
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cop1buflength = 0;
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}
|
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}
|
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else
|
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{
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/* We have a 16 bit core insn and a 16 bit copro insn. */
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corebuflength = 2;
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cop1buflength = 2;
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}
|
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|
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/* Now we have the distrubution set. Print them out. */
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status = mep_print_vliw_insns (cd, pc, info, buf, corebuflength,
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cop1buflength, cop2buflength);
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return status;
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}
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|
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static int
|
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mep_examine_vliw64_insns (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
|
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{
|
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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 indicator64[4];
|
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|
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/* At this time we're not supporting internally parallel
|
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coprocessors, so cop2buflength will always be 0. */
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cop2buflength = 0;
|
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|
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/* Read in 64 bits. */
|
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buflength = 8; /* VLIW insn spans 8 bytes. */
|
||
status = (*info->read_memory_func) (pc, buf, buflength, info);
|
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|
||
if (status != 0)
|
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{
|
||
(*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
|
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high order bits will indicate whether or not we have a 16 bit
|
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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;
|
||
}
|
||
|
||
static int
|
||
mep_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
|
||
{
|
||
int status;
|
||
|
||
/* 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 */
|
||
}
|
||
|
||
/* Picking the right ISA bitmask for the current context is tricky. */
|
||
if (info->section)
|
||
{
|
||
if (info->section->flags & SEC_MEP_VLIW)
|
||
{
|
||
/* 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
|
||
{
|
||
cd->isas = & MEP_CORE_ISA;
|
||
status = default_print_insn (cd, pc, info);
|
||
}
|
||
}
|
||
else /* sid or gdb */
|
||
{
|
||
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_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_CDISP8 :
|
||
print_normal (cd, info, fields->f_8s24, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CDISP8A2 :
|
||
print_normal (cd, info, fields->f_8s24a2, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CDISP8A4 :
|
||
print_normal (cd, info, fields->f_8s24a4, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
|
||
break;
|
||
case MEP_OPERAND_CDISP8A8 :
|
||
print_normal (cd, info, fields->f_8s24a8, 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_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_FMAX_CCRN :
|
||
print_fmax_ccr (cd, info, & mep_cgen_opval_h_ccr, fields->f_fmax_4_4, 0);
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRD :
|
||
print_fmax_cr (cd, info, & mep_cgen_opval_h_cr, fields->f_fmax_frd, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRD_INT :
|
||
print_fmax_cr (cd, info, & mep_cgen_opval_h_cr, fields->f_fmax_frd, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRM :
|
||
print_fmax_cr (cd, info, & mep_cgen_opval_h_cr, fields->f_fmax_frm, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRN :
|
||
print_fmax_cr (cd, info, & mep_cgen_opval_h_cr, fields->f_fmax_frn, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_FMAX_FRN_INT :
|
||
print_fmax_cr (cd, info, & mep_cgen_opval_h_cr, fields->f_fmax_frn, 0|(1<<CGEN_OPERAND_VIRTUAL));
|
||
break;
|
||
case MEP_OPERAND_FMAX_RM :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_gpr, fields->f_fmax_rm, 0);
|
||
break;
|
||
case MEP_OPERAND_HI :
|
||
print_keyword (cd, info, & mep_cgen_opval_h_csr, 0, 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_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_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_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 */
|
||
fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
|
||
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;
|
||
|
||
#ifdef CGEN_PRINT_NORMAL
|
||
CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
|
||
#endif
|
||
|
||
/* 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;
|
||
|
||
#ifdef CGEN_PRINT_ADDRESS
|
||
CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
|
||
#endif
|
||
|
||
/* 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);
|
||
|
||
|
||
/* 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;
|
||
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;
|
||
int length;
|
||
CGEN_BITSET *isa;
|
||
int mach;
|
||
int endian = (info->endian == 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->insn_sets;
|
||
#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;
|
||
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_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;
|
||
}
|