fr30-dis.c

基于4个mips核的noc设计

/* Disassembler interface for targets using CGEN. -*- C -*-
   CGEN: Cpu tools GENerator

THIS FILE IS MACHINE GENERATED WITH CGEN.
- the resultant file is machine generated, cgen-dis.in isn't

Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.

This file is part of the GNU Binutils and GDB, the GNU debugger.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

/* ??? Eventually more and more of this stuff can go to cpu-independent files.
   Keep that in mind.  */

#include "sysdep.h"
#include <stdio.h>
#include "ansidecl.h"
#include "dis-asm.h"
#include "bfd.h"
#include "symcat.h"
#include "fr30-desc.h"
#include "fr30-opc.h"
#include "opintl.h"

/* Default text to print if an instruction isn't recognized.  */
#define UNKNOWN_INSN_MSG _("*unknown*")

static void print_normal
     PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned int, bfd_vma, int));
static void print_address
     PARAMS ((CGEN_CPU_DESC, PTR, bfd_vma, unsigned int, bfd_vma, int));
static void print_keyword
     PARAMS ((CGEN_CPU_DESC, PTR, CGEN_KEYWORD *, long, unsigned int));
static void print_insn_normal
     PARAMS ((CGEN_CPU_DESC, PTR, const CGEN_INSN *, CGEN_FIELDS *,
	      bfd_vma, int));
static int print_insn PARAMS ((CGEN_CPU_DESC, bfd_vma,
			       disassemble_info *, char *, int));
static int default_print_insn
     PARAMS ((CGEN_CPU_DESC, bfd_vma, disassemble_info *));

/* -- disassembler routines inserted here */

/* -- dis.c */

static void
print_register_list (dis_info, value, offset, load_store)
     PTR dis_info;
     long value;
     long offset;
     int load_store; /* 0 == load, 1 == store */
{
  disassemble_info *info = dis_info;
  int mask;
  int index = 0;
  char* comma = "";

  if (load_store)
    mask = 0x80;
  else
    mask = 1;

  if (value & mask)
    {
      (*info->fprintf_func) (info->stream, "r%i", index + offset);
      comma = ",";
    }
    
  for (index = 1; index <= 7; ++index)
    {
      if (load_store)
	mask >>= 1;
      else
	mask <<= 1;

      if (value & mask)
	{
	  (*info->fprintf_func) (info->stream, "%sr%i", comma, index + offset);
	  comma = ",";
	}
    }
}

static void
print_hi_register_list_ld (cd, dis_info, value, attrs, pc, length)
     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
     PTR dis_info;
     long value;
     unsigned int attrs ATTRIBUTE_UNUSED;
     bfd_vma pc ATTRIBUTE_UNUSED;
     int length ATTRIBUTE_UNUSED;
{
  print_register_list (dis_info, value, 8, 0/*load*/);
}

static void
print_low_register_list_ld (cd, dis_info, value, attrs, pc, length)
     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
     PTR dis_info;
     long value;
     unsigned int attrs ATTRIBUTE_UNUSED;
     bfd_vma pc ATTRIBUTE_UNUSED;
     int length ATTRIBUTE_UNUSED;
{
  print_register_list (dis_info, value, 0, 0/*load*/);
}

static void
print_hi_register_list_st (cd, dis_info, value, attrs, pc, length)
     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
     PTR dis_info;
     long value;
     unsigned int attrs ATTRIBUTE_UNUSED;
     bfd_vma pc ATTRIBUTE_UNUSED;
     int length ATTRIBUTE_UNUSED;
{
  print_register_list (dis_info, value, 8, 1/*store*/);
}

static void
print_low_register_list_st (cd, dis_info, value, attrs, pc, length)
     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
     PTR dis_info;
     long value;
     unsigned int attrs ATTRIBUTE_UNUSED;
     bfd_vma pc ATTRIBUTE_UNUSED;
     int length ATTRIBUTE_UNUSED;
{
  print_register_list (dis_info, value, 0, 1/*store*/);
}

static void
print_m4 (cd, dis_info, value, attrs, pc, length)
     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
     PTR dis_info;
     long value;
     unsigned int attrs ATTRIBUTE_UNUSED;
     bfd_vma pc ATTRIBUTE_UNUSED;
     int length ATTRIBUTE_UNUSED;
{
  disassemble_info *info = (disassemble_info *) dis_info;
  (*info->fprintf_func) (info->stream, "%ld", value);
}
/* -- */

/* 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
fr30_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length)
     CGEN_CPU_DESC cd;
     int opindex;
     PTR xinfo;
     CGEN_FIELDS *fields;
     void const *attrs ATTRIBUTE_UNUSED;
     bfd_vma pc;
     int length;
{
 disassemble_info *info = (disassemble_info *) xinfo;

  switch (opindex)
    {
    case FR30_OPERAND_CRI :
      print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRi, 0);
      break;
    case FR30_OPERAND_CRJ :
      print_keyword (cd, info, & fr30_cgen_opval_cr_names, fields->f_CRj, 0);
      break;
    case FR30_OPERAND_R13 :
      print_keyword (cd, info, & fr30_cgen_opval_h_r13, 0, 0);
      break;
    case FR30_OPERAND_R14 :
      print_keyword (cd, info, & fr30_cgen_opval_h_r14, 0, 0);
      break;
    case FR30_OPERAND_R15 :
      print_keyword (cd, info, & fr30_cgen_opval_h_r15, 0, 0);
      break;
    case FR30_OPERAND_RI :
      print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ri, 0);
      break;
    case FR30_OPERAND_RIC :
      print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Ric, 0);
      break;
    case FR30_OPERAND_RJ :
      print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rj, 0);
      break;
    case FR30_OPERAND_RJC :
      print_keyword (cd, info, & fr30_cgen_opval_gr_names, fields->f_Rjc, 0);
      break;
    case FR30_OPERAND_RS1 :
      print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs1, 0);
      break;
    case FR30_OPERAND_RS2 :
      print_keyword (cd, info, & fr30_cgen_opval_dr_names, fields->f_Rs2, 0);
      break;
    case FR30_OPERAND_CC :
      print_normal (cd, info, fields->f_cc, 0, pc, length);
      break;
    case FR30_OPERAND_CCC :
      print_normal (cd, info, fields->f_ccc, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_DIR10 :
      print_normal (cd, info, fields->f_dir10, 0, pc, length);
      break;
    case FR30_OPERAND_DIR8 :
      print_normal (cd, info, fields->f_dir8, 0, pc, length);
      break;
    case FR30_OPERAND_DIR9 :
      print_normal (cd, info, fields->f_dir9, 0, pc, length);
      break;
    case FR30_OPERAND_DISP10 :
      print_normal (cd, info, fields->f_disp10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_DISP8 :
      print_normal (cd, info, fields->f_disp8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_DISP9 :
      print_normal (cd, info, fields->f_disp9, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_I20 :
      print_normal (cd, info, fields->f_i20, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
      break;
    case FR30_OPERAND_I32 :
      print_normal (cd, info, fields->f_i32, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_SIGN_OPT), pc, length);
      break;
    case FR30_OPERAND_I8 :
      print_normal (cd, info, fields->f_i8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_LABEL12 :
      print_address (cd, info, fields->f_rel12, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
      break;
    case FR30_OPERAND_LABEL9 :
      print_address (cd, info, fields->f_rel9, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
      break;
    case FR30_OPERAND_M4 :
      print_m4 (cd, info, fields->f_m4, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_PS :
      print_keyword (cd, info, & fr30_cgen_opval_h_ps, 0, 0);
      break;
    case FR30_OPERAND_REGLIST_HI_LD :
      print_hi_register_list_ld (cd, info, fields->f_reglist_hi_ld, 0, pc, length);
      break;
    case FR30_OPERAND_REGLIST_HI_ST :
      print_hi_register_list_st (cd, info, fields->f_reglist_hi_st, 0, pc, length);
      break;
    case FR30_OPERAND_REGLIST_LOW_LD :
      print_low_register_list_ld (cd, info, fields->f_reglist_low_ld, 0, pc, length);
      break;
    case FR30_OPERAND_REGLIST_LOW_ST :
      print_low_register_list_st (cd, info, fields->f_reglist_low_st, 0, pc, length);
      break;
    case FR30_OPERAND_S10 :
      print_normal (cd, info, fields->f_s10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_U10 :
      print_normal (cd, info, fields->f_u10, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_U4 :
      print_normal (cd, info, fields->f_u4, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_U4C :
      print_normal (cd, info, fields->f_u4c, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_U8 :
      print_normal (cd, info, fields->f_u8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;
    case FR30_OPERAND_UDISP6 :
      print_normal (cd, info, fields->f_udisp6, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
      break;

    default :
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
	       opindex);
    abort ();
  }
}

cgen_print_fn * const fr30_cgen_print_handlers[] = 
{
  print_insn_normal,
};


void
fr30_cgen_init_dis (cd)
     CGEN_CPU_DESC cd;
{
  fr30_cgen_init_opcode_table (cd);
  fr30_cgen_init_ibld_table (cd);
  cd->print_handlers = & fr30_cgen_print_handlers[0];
  cd->print_operand = fr30_cgen_print_operand;
}


/* Default print handler.  */

static void
print_normal (cd, dis_info, value, attrs, pc, length)
#ifdef CGEN_PRINT_NORMAL
     CGEN_CPU_DESC cd;
#else
     CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
#endif
     PTR dis_info;
     long value;
     unsigned int attrs;
#ifdef CGEN_PRINT_NORMAL
     bfd_vma pc;
     int length;
#else
     bfd_vma pc ATTRIBUTE_UNUSED;
     int length ATTRIBUTE_UNUSED;
#endif
{
  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.  */