opcodes/rx-dis.c

   1 /* Disassembler code for Renesas RX.
   2    Copyright 2008, 2009, 2012 Free Software Foundation, Inc.
   3    Contributed by Red Hat.
   4    Written by DJ Delorie.
   5
   6    This file is part of the GNU opcodes library.
   7
   8    This library is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3, or (at your option)
  11    any later version.
  12
  13    It is distributed in the hope that it will be useful, but WITHOUT
  14    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  16    License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21    MA 02110-1301, USA.  */
  22
  23 #include "sysdep.h"
  24 #include <stdio.h>
  25
  26 #include "bfd.h"
  27 #include "dis-asm.h"
  28 #include "opcode/rx.h"
  29
  30 typedef struct
  31 {
  32   bfd_vma pc;
  33   disassemble_info * dis;
  34 } RX_Data;
  35
  36 static int
  37 rx_get_byte (void * vdata)
  38 {
  39   bfd_byte buf[1];
  40   RX_Data *rx_data = (RX_Data *) vdata;
  41
  42   rx_data->dis->read_memory_func (rx_data->pc,
  43                                   buf,
  44                                   1,
  45                                   rx_data->dis);
  46
  47   rx_data->pc ++;
  48   return buf[0];
  49 }
  50
  51 static char const * size_names[] =
  52 {
  53   "", ".b", ".ub", ".b", ".w", ".uw", ".w", ".a", ".l"
  54 };
  55
  56 static char const * opsize_names[] =
  57 {
  58   "", ".b", ".b", ".b", ".w", ".w", ".w", ".a", ".l"
  59 };
  60
  61 static char const * register_names[] =
  62 {
  63   /* general registers */
  64   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
  65   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
  66   /* control register */
  67   "psw", "pc", "usp", "fpsw", "", "", "", "wr",
  68   "bpsw", "bpc", "isp", "fintv", "intb", "", "", "",
  69   "pbp", "pben", "", "", "", "", "", "",
  70   "bbpsw", "bbpc", "", "", "", "", "", ""
  71 };
  72
  73 static char const * condition_names[] =
  74 {
  75   /* condition codes */
  76   "eq", "ne", "c", "nc", "gtu", "leu", "pz", "n",
  77   "ge", "lt", "gt", "le", "o", "no", "always", "never"
  78 };
  79
  80 static const char * flag_names[] =
  81 {
  82   "c", "z", "s", "o", "", "", "", "",
  83   "", "", "", "", "", "", "", "",
  84   "i", "u", "", "", "", "", "", ""
  85   "", "", "", "", "", "", "", "",
  86 };
  87
  88 int
  89 print_insn_rx (bfd_vma addr, disassemble_info * dis)
  90 {
  91   int rv;
  92   RX_Data rx_data;
  93   RX_Opcode_Decoded opcode;
  94   const char * s;
  95
  96   rx_data.pc = addr;
  97   rx_data.dis = dis;
  98
  99   rv = rx_decode_opcode (addr, &opcode, rx_get_byte, &rx_data);
 100
 101   dis->bytes_per_line = 10;
 102
 103 #define PR (dis->fprintf_func)
 104 #define PS (dis->stream)
 105 #define PC(c) PR (PS, "%c", c)
 106
 107   for (s = opcode.syntax; *s; s++)
 108     {
 109       if (*s != '%')
 110         {
 111           PC (*s);
 112         }
 113       else
 114         {
 115           RX_Opcode_Operand * oper;
 116           int do_size = 0;
 117           int do_hex = 0;
 118           int do_addr = 0;
 119
 120           s ++;
 121
 122           if (*s == 'S')
 123             {
 124               do_size = 1;
 125               s++;
 126             }
 127           if (*s == 'x')
 128             {
 129               do_hex = 1;
 130               s++;
 131             }
 132           if (*s == 'a')
 133             {
 134               do_addr = 1;
 135               s++;
 136             }
 137
 138           switch (*s)
 139             {
 140             case '%':
 141               PC ('%');
 142               break;
 143
 144             case 's':
 145               PR (PS, "%s", opsize_names[opcode.size]);
 146               break;
 147
 148             case '0':
 149             case '1':
 150             case '2':
 151               oper = opcode.op + *s - '0';
 152               if (do_size)
 153                 {
 154                   if (oper->type == RX_Operand_Indirect)
 155                     PR (PS, "%s", size_names[oper->size]);
 156                 }
 157               else
 158                 switch (oper->type)
 159                   {
 160                   case RX_Operand_Immediate:
 161                     if (do_addr)
 162                       dis->print_address_func (oper->addend, dis);
 163                     else if (do_hex
 164                              || oper->addend > 999
 165                              || oper->addend < -999)
 166                       PR (PS, "%#x", oper->addend);
 167                     else
 168                       PR (PS, "%d", oper->addend);
 169                     break;
 170                   case RX_Operand_Register:
 171                   case RX_Operand_TwoReg:
 172                     PR (PS, "%s", register_names[oper->reg]);
 173                     break;
 174                   case RX_Operand_Indirect:
 175                     if (oper->addend)
 176                       PR (PS, "%d[%s]", oper->addend, register_names[oper->reg]);
 177                     else
 178                       PR (PS, "[%s]", register_names[oper->reg]);
 179                     break;
 180                   case RX_Operand_Postinc:
 181                     PR (PS, "[%s+]", register_names[oper->reg]);
 182                     break;
 183                   case RX_Operand_Predec:
 184                     PR (PS, "[-%s]", register_names[oper->reg]);
 185                     break;
 186                   case RX_Operand_Condition:
 187                     PR (PS, "%s", condition_names[oper->reg]);
 188                     break;
 189                   case RX_Operand_Flag:
 190                     PR (PS, "%s", flag_names[oper->reg]);
 191                     break;
 192                   default:
 193                     PR (PS, "[???]");
 194                     break;
 195                   }
 196             }
 197         }
 198     }
 199
 200   return rv;
 201 }