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jeremybenn |
/* 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, 2007,
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2008, 2010 Free Software Foundation, Inc.
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This file is part of libopcodes.
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This library 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 3, or (at your option)
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any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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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 "fr30-desc.h"
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#include "fr30-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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static void
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print_register_list (void * dis_info,
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long value,
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long offset,
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int load_store) /* 0 == load, 1 == store. */
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{
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disassemble_info *info = dis_info;
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int mask;
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int reg_index = 0;
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char * comma = "";
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if (load_store)
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mask = 0x80;
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else
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mask = 1;
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if (value & mask)
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{
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(*info->fprintf_func) (info->stream, "r%li", reg_index + offset);
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comma = ",";
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}
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for (reg_index = 1; reg_index <= 7; ++reg_index)
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{
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if (load_store)
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mask >>= 1;
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else
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mask <<= 1;
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if (value & mask)
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{
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(*info->fprintf_func) (info->stream, "%sr%li", comma, reg_index + offset);
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comma = ",";
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}
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}
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}
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static void
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print_hi_register_list_ld (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
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void * dis_info,
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long value,
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unsigned int attrs ATTRIBUTE_UNUSED,
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bfd_vma pc ATTRIBUTE_UNUSED,
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int length ATTRIBUTE_UNUSED)
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{
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print_register_list (dis_info, value, 8, 0 /* Load. */);
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}
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static void
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print_low_register_list_ld (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
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void * dis_info,
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long value,
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unsigned int attrs ATTRIBUTE_UNUSED,
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bfd_vma pc ATTRIBUTE_UNUSED,
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int length ATTRIBUTE_UNUSED)
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{
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print_register_list (dis_info, value, 0, 0 /* Load. */);
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}
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static void
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print_hi_register_list_st (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
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void * dis_info,
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long value,
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unsigned int attrs ATTRIBUTE_UNUSED,
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bfd_vma pc ATTRIBUTE_UNUSED,
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int length ATTRIBUTE_UNUSED)
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{
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print_register_list (dis_info, value, 8, 1 /* Store. */);
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}
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static void
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print_low_register_list_st (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
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void * dis_info,
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long value,
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unsigned int attrs ATTRIBUTE_UNUSED,
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bfd_vma pc ATTRIBUTE_UNUSED,
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int length ATTRIBUTE_UNUSED)
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{
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print_register_list (dis_info, value, 0, 1 /* Store. */);
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}
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static void
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print_m4 (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
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void * dis_info,
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long value,
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unsigned int attrs ATTRIBUTE_UNUSED,
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bfd_vma pc ATTRIBUTE_UNUSED,
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int length 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, "%ld", value);
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}
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/* -- */
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void fr30_cgen_print_operand
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(CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
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/* Main entry point for printing operands.
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XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
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of dis-asm.h on cgen.h.
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This function is basically just a big switch statement. Earlier versions
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used tables to look up the function to use, but
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- if the table contains both assembler and disassembler functions then
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the disassembler contains much of the assembler and vice-versa,
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- there's a lot of inlining possibilities as things grow,
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- using a switch statement avoids the function call overhead.
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This function could be moved into `print_insn_normal', but keeping it
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separate makes clear the interface between `print_insn_normal' and each of
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the handlers. */
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void
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fr30_cgen_print_operand (CGEN_CPU_DESC cd,
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int opindex,
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void * xinfo,
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CGEN_FIELDS *fields,
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void const *attrs ATTRIBUTE_UNUSED,
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bfd_vma pc,
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int length)
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{
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disassemble_info *info = (disassemble_info *) xinfo;
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switch (opindex)
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{
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case FR30_OPERAND_CRI :
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print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRi, 0);
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break;
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case FR30_OPERAND_CRJ :
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print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRj, 0);
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break;
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case FR30_OPERAND_R13 :
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print_keyword (cd, info, & fr30_cgen_opval_h_r13, 0, 0);
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break;
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case FR30_OPERAND_R14 :
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print_keyword (cd, info, & fr30_cgen_opval_h_r14, 0, 0);
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break;
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case FR30_OPERAND_R15 :
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print_keyword (cd, info, & fr30_cgen_opval_h_r15, 0, 0);
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break;
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case FR30_OPERAND_RI :
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print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ri, 0);
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break;
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case FR30_OPERAND_RIC :
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print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ric, 0);
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break;
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case FR30_OPERAND_RJ :
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print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rj, 0);
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break;
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case FR30_OPERAND_RJC :
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print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rjc, 0);
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break;
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case FR30_OPERAND_RS1 :
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print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs1, 0);
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break;
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case FR30_OPERAND_RS2 :
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print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs2, 0);
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break;
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case FR30_OPERAND_CC :
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print_normal (cd, info, fields->f_cc, 0, pc, length);
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break;
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case FR30_OPERAND_CCC :
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print_normal (cd, info, fields->f_ccc, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
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break;
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case FR30_OPERAND_DIR10 :
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print_normal (cd, info, fields->f_dir10, 0, pc, length);
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break;
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case FR30_OPERAND_DIR8 :
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print_normal (cd, info, fields->f_dir8, 0, pc, length);
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break;
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case FR30_OPERAND_DIR9 :
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print_normal (cd, info, fields->f_dir9, 0, pc, length);
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break;
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case FR30_OPERAND_DISP10 :
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print_normal (cd, info, fields->f_disp10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
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break;
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case FR30_OPERAND_DISP8 :
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print_normal (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
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break;
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case FR30_OPERAND_DISP9 :
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print_normal (cd, info, fields->f_disp9, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
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break;
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case FR30_OPERAND_I20 :
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print_normal (cd, info, fields->f_i20, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
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break;
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case FR30_OPERAND_I32 :
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print_normal (cd, info, fields->f_i32, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
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break;
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case FR30_OPERAND_I8 :
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print_normal (cd, info, fields->f_i8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
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break;
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case FR30_OPERAND_LABEL12 :
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print_address (cd, info, fields->f_rel12, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
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break;
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case FR30_OPERAND_LABEL9 :
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print_address (cd, info, fields->f_rel9, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
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break;
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case FR30_OPERAND_M4 :
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print_m4 (cd, info, fields->f_m4, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
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break;
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case FR30_OPERAND_PS :
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print_keyword (cd, info, & fr30_cgen_opval_h_ps, 0, 0);
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break;
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case FR30_OPERAND_REGLIST_HI_LD :
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print_hi_register_list_ld (cd, info, fields->f_reglist_hi_ld, 0, pc, length);
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break;
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case FR30_OPERAND_REGLIST_HI_ST :
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print_hi_register_list_st (cd, info, fields->f_reglist_hi_st, 0, pc, length);
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break;
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272 |
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case FR30_OPERAND_REGLIST_LOW_LD :
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print_low_register_list_ld (cd, info, fields->f_reglist_low_ld, 0, pc, length);
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274 |
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break;
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275 |
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case FR30_OPERAND_REGLIST_LOW_ST :
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print_low_register_list_st (cd, info, fields->f_reglist_low_st, 0, pc, length);
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277 |
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break;
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278 |
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case FR30_OPERAND_S10 :
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279 |
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print_normal (cd, info, fields->f_s10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
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280 |
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break;
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281 |
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case FR30_OPERAND_U10 :
|
282 |
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print_normal (cd, info, fields->f_u10, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
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283 |
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break;
|
284 |
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case FR30_OPERAND_U4 :
|
285 |
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print_normal (cd, info, fields->f_u4, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
|
286 |
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break;
|
287 |
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case FR30_OPERAND_U4C :
|
288 |
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print_normal (cd, info, fields->f_u4c, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
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289 |
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break;
|
290 |
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case FR30_OPERAND_U8 :
|
291 |
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print_normal (cd, info, fields->f_u8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
|
292 |
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break;
|
293 |
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case FR30_OPERAND_UDISP6 :
|
294 |
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print_normal (cd, info, fields->f_udisp6, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
|
295 |
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break;
|
296 |
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297 |
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default :
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298 |
|
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/* xgettext:c-format */
|
299 |
|
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fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
|
300 |
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opindex);
|
301 |
|
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abort ();
|
302 |
|
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}
|
303 |
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}
|
304 |
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|
305 |
|
|
cgen_print_fn * const fr30_cgen_print_handlers[] =
|
306 |
|
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{
|
307 |
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print_insn_normal,
|
308 |
|
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};
|
309 |
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|
310 |
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|
311 |
|
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void
|
312 |
|
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fr30_cgen_init_dis (CGEN_CPU_DESC cd)
|
313 |
|
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{
|
314 |
|
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fr30_cgen_init_opcode_table (cd);
|
315 |
|
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fr30_cgen_init_ibld_table (cd);
|
316 |
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cd->print_handlers = & fr30_cgen_print_handlers[0];
|
317 |
|
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cd->print_operand = fr30_cgen_print_operand;
|
318 |
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}
|
319 |
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|
320 |
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|
321 |
|
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/* Default print handler. */
|
322 |
|
|
|
323 |
|
|
static void
|
324 |
|
|
print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
325 |
|
|
void *dis_info,
|
326 |
|
|
long value,
|
327 |
|
|
unsigned int attrs,
|
328 |
|
|
bfd_vma pc ATTRIBUTE_UNUSED,
|
329 |
|
|
int length ATTRIBUTE_UNUSED)
|
330 |
|
|
{
|
331 |
|
|
disassemble_info *info = (disassemble_info *) dis_info;
|
332 |
|
|
|
333 |
|
|
/* Print the operand as directed by the attributes. */
|
334 |
|
|
if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
|
335 |
|
|
; /* nothing to do */
|
336 |
|
|
else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
|
337 |
|
|
(*info->fprintf_func) (info->stream, "%ld", value);
|
338 |
|
|
else
|
339 |
|
|
(*info->fprintf_func) (info->stream, "0x%lx", value);
|
340 |
|
|
}
|
341 |
|
|
|
342 |
|
|
/* Default address handler. */
|
343 |
|
|
|
344 |
|
|
static void
|
345 |
|
|
print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
346 |
|
|
void *dis_info,
|
347 |
|
|
bfd_vma value,
|
348 |
|
|
unsigned int attrs,
|
349 |
|
|
bfd_vma pc ATTRIBUTE_UNUSED,
|
350 |
|
|
int length ATTRIBUTE_UNUSED)
|
351 |
|
|
{
|
352 |
|
|
disassemble_info *info = (disassemble_info *) dis_info;
|
353 |
|
|
|
354 |
|
|
/* Print the operand as directed by the attributes. */
|
355 |
|
|
if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
|
356 |
|
|
; /* Nothing to do. */
|
357 |
|
|
else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
|
358 |
|
|
(*info->print_address_func) (value, info);
|
359 |
|
|
else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
|
360 |
|
|
(*info->print_address_func) (value, info);
|
361 |
|
|
else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
|
362 |
|
|
(*info->fprintf_func) (info->stream, "%ld", (long) value);
|
363 |
|
|
else
|
364 |
|
|
(*info->fprintf_func) (info->stream, "0x%lx", (long) value);
|
365 |
|
|
}
|
366 |
|
|
|
367 |
|
|
/* Keyword print handler. */
|
368 |
|
|
|
369 |
|
|
static void
|
370 |
|
|
print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
371 |
|
|
void *dis_info,
|
372 |
|
|
CGEN_KEYWORD *keyword_table,
|
373 |
|
|
long value,
|
374 |
|
|
unsigned int attrs ATTRIBUTE_UNUSED)
|
375 |
|
|
{
|
376 |
|
|
disassemble_info *info = (disassemble_info *) dis_info;
|
377 |
|
|
const CGEN_KEYWORD_ENTRY *ke;
|
378 |
|
|
|
379 |
|
|
ke = cgen_keyword_lookup_value (keyword_table, value);
|
380 |
|
|
if (ke != NULL)
|
381 |
|
|
(*info->fprintf_func) (info->stream, "%s", ke->name);
|
382 |
|
|
else
|
383 |
|
|
(*info->fprintf_func) (info->stream, "???");
|
384 |
|
|
}
|
385 |
|
|
|
386 |
|
|
/* Default insn printer.
|
387 |
|
|
|
388 |
|
|
DIS_INFO is defined as `void *' so the disassembler needn't know anything
|
389 |
|
|
about disassemble_info. */
|
390 |
|
|
|
391 |
|
|
static void
|
392 |
|
|
print_insn_normal (CGEN_CPU_DESC cd,
|
393 |
|
|
void *dis_info,
|
394 |
|
|
const CGEN_INSN *insn,
|
395 |
|
|
CGEN_FIELDS *fields,
|
396 |
|
|
bfd_vma pc,
|
397 |
|
|
int length)
|
398 |
|
|
{
|
399 |
|
|
const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
|
400 |
|
|
disassemble_info *info = (disassemble_info *) dis_info;
|
401 |
|
|
const CGEN_SYNTAX_CHAR_TYPE *syn;
|
402 |
|
|
|
403 |
|
|
CGEN_INIT_PRINT (cd);
|
404 |
|
|
|
405 |
|
|
for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
|
406 |
|
|
{
|
407 |
|
|
if (CGEN_SYNTAX_MNEMONIC_P (*syn))
|
408 |
|
|
{
|
409 |
|
|
(*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
|
410 |
|
|
continue;
|
411 |
|
|
}
|
412 |
|
|
if (CGEN_SYNTAX_CHAR_P (*syn))
|
413 |
|
|
{
|
414 |
|
|
(*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
|
415 |
|
|
continue;
|
416 |
|
|
}
|
417 |
|
|
|
418 |
|
|
/* We have an operand. */
|
419 |
|
|
fr30_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
|
420 |
|
|
fields, CGEN_INSN_ATTRS (insn), pc, length);
|
421 |
|
|
}
|
422 |
|
|
}
|
423 |
|
|
|
424 |
|
|
/* Subroutine of print_insn. Reads an insn into the given buffers and updates
|
425 |
|
|
the extract info.
|
426 |
|
|
Returns 0 if all is well, non-zero otherwise. */
|
427 |
|
|
|
428 |
|
|
static int
|
429 |
|
|
read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
|
430 |
|
|
bfd_vma pc,
|
431 |
|
|
disassemble_info *info,
|
432 |
|
|
bfd_byte *buf,
|
433 |
|
|
int buflen,
|
434 |
|
|
CGEN_EXTRACT_INFO *ex_info,
|
435 |
|
|
unsigned long *insn_value)
|
436 |
|
|
{
|
437 |
|
|
int status = (*info->read_memory_func) (pc, buf, buflen, info);
|
438 |
|
|
|
439 |
|
|
if (status != 0)
|
440 |
|
|
{
|
441 |
|
|
(*info->memory_error_func) (status, pc, info);
|
442 |
|
|
return -1;
|
443 |
|
|
}
|
444 |
|
|
|
445 |
|
|
ex_info->dis_info = info;
|
446 |
|
|
ex_info->valid = (1 << buflen) - 1;
|
447 |
|
|
ex_info->insn_bytes = buf;
|
448 |
|
|
|
449 |
|
|
*insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
|
450 |
|
|
return 0;
|
451 |
|
|
}
|
452 |
|
|
|
453 |
|
|
/* Utility to print an insn.
|
454 |
|
|
BUF is the base part of the insn, target byte order, BUFLEN bytes long.
|
455 |
|
|
The result is the size of the insn in bytes or zero for an unknown insn
|
456 |
|
|
or -1 if an error occurs fetching data (memory_error_func will have
|
457 |
|
|
been called). */
|
458 |
|
|
|
459 |
|
|
static int
|
460 |
|
|
print_insn (CGEN_CPU_DESC cd,
|
461 |
|
|
bfd_vma pc,
|
462 |
|
|
disassemble_info *info,
|
463 |
|
|
bfd_byte *buf,
|
464 |
|
|
unsigned int buflen)
|
465 |
|
|
{
|
466 |
|
|
CGEN_INSN_INT insn_value;
|
467 |
|
|
const CGEN_INSN_LIST *insn_list;
|
468 |
|
|
CGEN_EXTRACT_INFO ex_info;
|
469 |
|
|
int basesize;
|
470 |
|
|
|
471 |
|
|
/* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
|
472 |
|
|
basesize = cd->base_insn_bitsize < buflen * 8 ?
|
473 |
|
|
cd->base_insn_bitsize : buflen * 8;
|
474 |
|
|
insn_value = cgen_get_insn_value (cd, buf, basesize);
|
475 |
|
|
|
476 |
|
|
|
477 |
|
|
/* Fill in ex_info fields like read_insn would. Don't actually call
|
478 |
|
|
read_insn, since the incoming buffer is already read (and possibly
|
479 |
|
|
modified a la m32r). */
|
480 |
|
|
ex_info.valid = (1 << buflen) - 1;
|
481 |
|
|
ex_info.dis_info = info;
|
482 |
|
|
ex_info.insn_bytes = buf;
|
483 |
|
|
|
484 |
|
|
/* The instructions are stored in hash lists.
|
485 |
|
|
Pick the first one and keep trying until we find the right one. */
|
486 |
|
|
|
487 |
|
|
insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
|
488 |
|
|
while (insn_list != NULL)
|
489 |
|
|
{
|
490 |
|
|
const CGEN_INSN *insn = insn_list->insn;
|
491 |
|
|
CGEN_FIELDS fields;
|
492 |
|
|
int length;
|
493 |
|
|
unsigned long insn_value_cropped;
|
494 |
|
|
|
495 |
|
|
#ifdef CGEN_VALIDATE_INSN_SUPPORTED
|
496 |
|
|
/* Not needed as insn shouldn't be in hash lists if not supported. */
|
497 |
|
|
/* Supported by this cpu? */
|
498 |
|
|
if (! fr30_cgen_insn_supported (cd, insn))
|
499 |
|
|
{
|
500 |
|
|
insn_list = CGEN_DIS_NEXT_INSN (insn_list);
|
501 |
|
|
continue;
|
502 |
|
|
}
|
503 |
|
|
#endif
|
504 |
|
|
|
505 |
|
|
/* Basic bit mask must be correct. */
|
506 |
|
|
/* ??? May wish to allow target to defer this check until the extract
|
507 |
|
|
handler. */
|
508 |
|
|
|
509 |
|
|
/* Base size may exceed this instruction's size. Extract the
|
510 |
|
|
relevant part from the buffer. */
|
511 |
|
|
if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
|
512 |
|
|
(unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
|
513 |
|
|
insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
|
514 |
|
|
info->endian == BFD_ENDIAN_BIG);
|
515 |
|
|
else
|
516 |
|
|
insn_value_cropped = insn_value;
|
517 |
|
|
|
518 |
|
|
if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
|
519 |
|
|
== CGEN_INSN_BASE_VALUE (insn))
|
520 |
|
|
{
|
521 |
|
|
/* Printing is handled in two passes. The first pass parses the
|
522 |
|
|
machine insn and extracts the fields. The second pass prints
|
523 |
|
|
them. */
|
524 |
|
|
|
525 |
|
|
/* Make sure the entire insn is loaded into insn_value, if it
|
526 |
|
|
can fit. */
|
527 |
|
|
if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
|
528 |
|
|
(unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
|
529 |
|
|
{
|
530 |
|
|
unsigned long full_insn_value;
|
531 |
|
|
int rc = read_insn (cd, pc, info, buf,
|
532 |
|
|
CGEN_INSN_BITSIZE (insn) / 8,
|
533 |
|
|
& ex_info, & full_insn_value);
|
534 |
|
|
if (rc != 0)
|
535 |
|
|
return rc;
|
536 |
|
|
length = CGEN_EXTRACT_FN (cd, insn)
|
537 |
|
|
(cd, insn, &ex_info, full_insn_value, &fields, pc);
|
538 |
|
|
}
|
539 |
|
|
else
|
540 |
|
|
length = CGEN_EXTRACT_FN (cd, insn)
|
541 |
|
|
(cd, insn, &ex_info, insn_value_cropped, &fields, pc);
|
542 |
|
|
|
543 |
|
|
/* Length < 0 -> error. */
|
544 |
|
|
if (length < 0)
|
545 |
|
|
return length;
|
546 |
|
|
if (length > 0)
|
547 |
|
|
{
|
548 |
|
|
CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
|
549 |
|
|
/* Length is in bits, result is in bytes. */
|
550 |
|
|
return length / 8;
|
551 |
|
|
}
|
552 |
|
|
}
|
553 |
|
|
|
554 |
|
|
insn_list = CGEN_DIS_NEXT_INSN (insn_list);
|
555 |
|
|
}
|
556 |
|
|
|
557 |
|
|
return 0;
|
558 |
|
|
}
|
559 |
|
|
|
560 |
|
|
/* Default value for CGEN_PRINT_INSN.
|
561 |
|
|
The result is the size of the insn in bytes or zero for an unknown insn
|
562 |
|
|
or -1 if an error occured fetching bytes. */
|
563 |
|
|
|
564 |
|
|
#ifndef CGEN_PRINT_INSN
|
565 |
|
|
#define CGEN_PRINT_INSN default_print_insn
|
566 |
|
|
#endif
|
567 |
|
|
|
568 |
|
|
static int
|
569 |
|
|
default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
|
570 |
|
|
{
|
571 |
|
|
bfd_byte buf[CGEN_MAX_INSN_SIZE];
|
572 |
|
|
int buflen;
|
573 |
|
|
int status;
|
574 |
|
|
|
575 |
|
|
/* Attempt to read the base part of the insn. */
|
576 |
|
|
buflen = cd->base_insn_bitsize / 8;
|
577 |
|
|
status = (*info->read_memory_func) (pc, buf, buflen, info);
|
578 |
|
|
|
579 |
|
|
/* Try again with the minimum part, if min < base. */
|
580 |
|
|
if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
|
581 |
|
|
{
|
582 |
|
|
buflen = cd->min_insn_bitsize / 8;
|
583 |
|
|
status = (*info->read_memory_func) (pc, buf, buflen, info);
|
584 |
|
|
}
|
585 |
|
|
|
586 |
|
|
if (status != 0)
|
587 |
|
|
{
|
588 |
|
|
(*info->memory_error_func) (status, pc, info);
|
589 |
|
|
return -1;
|
590 |
|
|
}
|
591 |
|
|
|
592 |
|
|
return print_insn (cd, pc, info, buf, buflen);
|
593 |
|
|
}
|
594 |
|
|
|
595 |
|
|
/* Main entry point.
|
596 |
|
|
Print one instruction from PC on INFO->STREAM.
|
597 |
|
|
Return the size of the instruction (in bytes). */
|
598 |
|
|
|
599 |
|
|
typedef struct cpu_desc_list
|
600 |
|
|
{
|
601 |
|
|
struct cpu_desc_list *next;
|
602 |
|
|
CGEN_BITSET *isa;
|
603 |
|
|
int mach;
|
604 |
|
|
int endian;
|
605 |
|
|
CGEN_CPU_DESC cd;
|
606 |
|
|
} cpu_desc_list;
|
607 |
|
|
|
608 |
|
|
int
|
609 |
|
|
print_insn_fr30 (bfd_vma pc, disassemble_info *info)
|
610 |
|
|
{
|
611 |
|
|
static cpu_desc_list *cd_list = 0;
|
612 |
|
|
cpu_desc_list *cl = 0;
|
613 |
|
|
static CGEN_CPU_DESC cd = 0;
|
614 |
|
|
static CGEN_BITSET *prev_isa;
|
615 |
|
|
static int prev_mach;
|
616 |
|
|
static int prev_endian;
|
617 |
|
|
int length;
|
618 |
|
|
CGEN_BITSET *isa;
|
619 |
|
|
int mach;
|
620 |
|
|
int endian = (info->endian == BFD_ENDIAN_BIG
|
621 |
|
|
? CGEN_ENDIAN_BIG
|
622 |
|
|
: CGEN_ENDIAN_LITTLE);
|
623 |
|
|
enum bfd_architecture arch;
|
624 |
|
|
|
625 |
|
|
/* ??? gdb will set mach but leave the architecture as "unknown" */
|
626 |
|
|
#ifndef CGEN_BFD_ARCH
|
627 |
|
|
#define CGEN_BFD_ARCH bfd_arch_fr30
|
628 |
|
|
#endif
|
629 |
|
|
arch = info->arch;
|
630 |
|
|
if (arch == bfd_arch_unknown)
|
631 |
|
|
arch = CGEN_BFD_ARCH;
|
632 |
|
|
|
633 |
|
|
/* There's no standard way to compute the machine or isa number
|
634 |
|
|
so we leave it to the target. */
|
635 |
|
|
#ifdef CGEN_COMPUTE_MACH
|
636 |
|
|
mach = CGEN_COMPUTE_MACH (info);
|
637 |
|
|
#else
|
638 |
|
|
mach = info->mach;
|
639 |
|
|
#endif
|
640 |
|
|
|
641 |
|
|
#ifdef CGEN_COMPUTE_ISA
|
642 |
|
|
{
|
643 |
|
|
static CGEN_BITSET *permanent_isa;
|
644 |
|
|
|
645 |
|
|
if (!permanent_isa)
|
646 |
|
|
permanent_isa = cgen_bitset_create (MAX_ISAS);
|
647 |
|
|
isa = permanent_isa;
|
648 |
|
|
cgen_bitset_clear (isa);
|
649 |
|
|
cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
|
650 |
|
|
}
|
651 |
|
|
#else
|
652 |
|
|
isa = info->insn_sets;
|
653 |
|
|
#endif
|
654 |
|
|
|
655 |
|
|
/* If we've switched cpu's, try to find a handle we've used before */
|
656 |
|
|
if (cd
|
657 |
|
|
&& (cgen_bitset_compare (isa, prev_isa) != 0
|
658 |
|
|
|| mach != prev_mach
|
659 |
|
|
|| endian != prev_endian))
|
660 |
|
|
{
|
661 |
|
|
cd = 0;
|
662 |
|
|
for (cl = cd_list; cl; cl = cl->next)
|
663 |
|
|
{
|
664 |
|
|
if (cgen_bitset_compare (cl->isa, isa) == 0 &&
|
665 |
|
|
cl->mach == mach &&
|
666 |
|
|
cl->endian == endian)
|
667 |
|
|
{
|
668 |
|
|
cd = cl->cd;
|
669 |
|
|
prev_isa = cd->isas;
|
670 |
|
|
break;
|
671 |
|
|
}
|
672 |
|
|
}
|
673 |
|
|
}
|
674 |
|
|
|
675 |
|
|
/* If we haven't initialized yet, initialize the opcode table. */
|
676 |
|
|
if (! cd)
|
677 |
|
|
{
|
678 |
|
|
const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
|
679 |
|
|
const char *mach_name;
|
680 |
|
|
|
681 |
|
|
if (!arch_type)
|
682 |
|
|
abort ();
|
683 |
|
|
mach_name = arch_type->printable_name;
|
684 |
|
|
|
685 |
|
|
prev_isa = cgen_bitset_copy (isa);
|
686 |
|
|
prev_mach = mach;
|
687 |
|
|
prev_endian = endian;
|
688 |
|
|
cd = fr30_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
|
689 |
|
|
CGEN_CPU_OPEN_BFDMACH, mach_name,
|
690 |
|
|
CGEN_CPU_OPEN_ENDIAN, prev_endian,
|
691 |
|
|
CGEN_CPU_OPEN_END);
|
692 |
|
|
if (!cd)
|
693 |
|
|
abort ();
|
694 |
|
|
|
695 |
|
|
/* Save this away for future reference. */
|
696 |
|
|
cl = xmalloc (sizeof (struct cpu_desc_list));
|
697 |
|
|
cl->cd = cd;
|
698 |
|
|
cl->isa = prev_isa;
|
699 |
|
|
cl->mach = mach;
|
700 |
|
|
cl->endian = endian;
|
701 |
|
|
cl->next = cd_list;
|
702 |
|
|
cd_list = cl;
|
703 |
|
|
|
704 |
|
|
fr30_cgen_init_dis (cd);
|
705 |
|
|
}
|
706 |
|
|
|
707 |
|
|
/* We try to have as much common code as possible.
|
708 |
|
|
But at this point some targets need to take over. */
|
709 |
|
|
/* ??? Some targets may need a hook elsewhere. Try to avoid this,
|
710 |
|
|
but if not possible try to move this hook elsewhere rather than
|
711 |
|
|
have two hooks. */
|
712 |
|
|
length = CGEN_PRINT_INSN (cd, pc, info);
|
713 |
|
|
if (length > 0)
|
714 |
|
|
return length;
|
715 |
|
|
if (length < 0)
|
716 |
|
|
return -1;
|
717 |
|
|
|
718 |
|
|
(*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
|
719 |
|
|
return cd->default_insn_bitsize / 8;
|
720 |
|
|
}
|