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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [opcodes/] [rl78-dis.c] - Blame information for rev 241

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/* Disassembler code for Renesas RL78.
2 
   Copyright 2011 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 <stdio.h>
24 
 
25 
#include "bfd.h"
26 
#include "dis-asm.h"
27 
#include "opcode/rl78.h"
28 
 
29 
#define DEBUG_SEMANTICS 0
30 
 
31 
typedef struct
32 
{
33 
  bfd_vma pc;
34 
  disassemble_info * dis;
35 
} RL78_Data;
36 
 
37 
static int
38 
rl78_get_byte (void * vdata)
39 
{
40 
  bfd_byte buf[1];
41 
  RL78_Data *rl78_data = (RL78_Data *) vdata;
42 
 
43 
  rl78_data->dis->read_memory_func (rl78_data->pc,
44 
                                  buf,
45 
                                  1,
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                                  rl78_data->dis);
47 
 
48 
  rl78_data->pc ++;
49 
  return buf[0];
50 
}
51 
 
52 
static char const *
53 
register_names[] =
54 
{
55 
  "",
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  "x", "a", "c", "b", "e", "d", "l", "h",
57 
  "ax", "bc", "de", "hl",
58 
  "sp", "psw", "cs", "es", "pmc", "mem"
59 
};
60 
 
61 
static char const *
62 
condition_names[] =
63 
{
64 
  "t", "f", "c", "nc", "h", "nh", "z", "nz"
65 
};
66 
 
67 
static int
68 
indirect_type (int t)
69 
{
70 
  switch (t)
71 
    {
72 
    case RL78_Operand_Indirect:
73 
    case RL78_Operand_BitIndirect:
74 
    case RL78_Operand_PostInc:
75 
    case RL78_Operand_PreDec:
76 
      return 1;
77 
    default:
78 
      return 0;
79 
    }
80 
}
81 
 
82 
int
83 
print_insn_rl78 (bfd_vma addr, disassemble_info * dis)
84 
{
85 
  int rv;
86 
  RL78_Data rl78_data;
87 
  RL78_Opcode_Decoded opcode;
88 
  const char * s;
89 
#if DEBUG_SEMANTICS
90 
  static char buf[200];
91 
#endif
92 
 
93 
  rl78_data.pc = addr;
94 
  rl78_data.dis = dis;
95 
 
96 
  rv = rl78_decode_opcode (addr, &opcode, rl78_get_byte, &rl78_data);
97 
 
98 
  dis->bytes_per_line = 10;
99 
 
100 
#define PR (dis->fprintf_func)
101 
#define PS (dis->stream)
102 
#define PC(c) PR (PS, "%c", c)
103 
 
104 
  s = opcode.syntax;
105 
 
106 
#if DEBUG_SEMANTICS
107 
 
108 
  switch (opcode.id)
109 
    {
110 
    case RLO_unknown: s = "uknown"; break;
111 
    case RLO_add: s = "add: %e0%0 += %e1%1"; break;
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    case RLO_addc: s = "addc: %e0%0 += %e1%1 + CY"; break;
113 
    case RLO_and: s = "and: %e0%0 &= %e1%1"; break;
114 
    case RLO_branch: s = "branch: pc = %e0%0"; break;
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    case RLO_branch_cond: s = "branch_cond: pc = %e0%0 if %c1 / %e1%1"; break;
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    case RLO_branch_cond_clear: s = "branch_cond_clear: pc = %e0%0 if %c1 / %e1%1, %e1%1 = 0"; break;
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    case RLO_call: s = "call: pc = %e1%0"; break;
118 
    case RLO_cmp: s = "cmp: %e0%0 - %e1%1"; break;
119 
    case RLO_mov: s = "mov: %e0%0 = %e1%1"; break;
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    case RLO_or: s = "or: %e0%0 |= %e1%1"; break;
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    case RLO_rol: s = "rol: %e0%0 <<= %e1%1"; break;
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    case RLO_rolc: s = "rol: %e0%0 <<= %e1%1,CY"; break;
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    case RLO_ror: s = "ror: %e0%0 >>= %e1%1"; break;
124 
    case RLO_rorc: s = "ror: %e0%0 >>= %e1%1,CY"; break;
125 
    case RLO_sar: s = "sar: %e0%0 >>= %e1%1 signed"; break;
126 
    case RLO_sel: s = "sel: rb = %1"; break;
127 
    case RLO_shr: s = "shr: %e0%0 >>= %e1%1 unsigned"; break;
128 
    case RLO_shl: s = "shl: %e0%0 <<= %e1%1"; break;
129 
    case RLO_skip: s = "skip: if %c1"; break;
130 
    case RLO_sub: s = "sub: %e0%0 -= %e1%1"; break;
131 
    case RLO_subc: s = "subc: %e0%0 -= %e1%1 - CY"; break;
132 
    case RLO_xch: s = "xch: %e0%0 <-> %e1%1"; break;
133 
    case RLO_xor: s = "xor: %e0%0 ^= %e1%1"; break;
134 
    }
135 
 
136 
  sprintf(buf, "%s%%W%%f\t\033[32m%s\033[0m", s, opcode.syntax);
137 
  s = buf;
138 
 
139 
#endif
140 
 
141 
  for (; *s; s++)
142 
    {
143 
      if (*s != '%')
144 
        {
145 
          PC (*s);
146 
        }
147 
      else
148 
        {
149 
          RL78_Opcode_Operand * oper;
150 
          int do_hex = 0;
151 
          int do_addr = 0;
152 
          int do_es = 0;
153 
          int do_sfr = 0;
154 
          int do_cond = 0;
155 
          int do_bang = 0;
156 
 
157 
          s ++;
158 
 
159 
          if (*s == 'x')
160 
            {
161 
              do_hex = 1;
162 
              s++;
163 
            }
164 
          if (*s == '!')
165 
            {
166 
              do_bang = 1;
167 
              s++;
168 
            }
169 
          if (*s == 'e')
170 
            {
171 
              do_es = 1;
172 
              s++;
173 
            }
174 
          if (*s == 'a')
175 
            {
176 
              do_addr = 1;
177 
              s++;
178 
            }
179 
          if (*s == 's')
180 
            {
181 
              do_sfr = 1;
182 
              s++;
183 
            }
184 
          if (*s == 'c')
185 
            {
186 
              do_cond = 1;
187 
              s++;
188 
            }
189 
 
190 
          switch (*s)
191 
            {
192 
            case '%':
193 
              PC ('%');
194 
              break;
195 
 
196 
#if DEBUG_SEMANTICS
197 
 
198 
            case 'W':
199 
              if (opcode.size == RL78_Word)
200 
                PR (PS, " \033[33mW\033[0m");
201 
              break;
202 
 
203 
            case 'f':
204 
              if (opcode.flags)
205 
                {
206 
                  char *comma = "";
207 
                  PR (PS, "  \033[35m");
208 
 
209 
                  if (opcode.flags & RL78_PSW_Z)
210 
                    { PR (PS, "Z"); comma = ","; }
211 
                  if (opcode.flags & RL78_PSW_AC)
212 
                    { PR (PS, "%sAC", comma); comma = ","; }
213 
                  if (opcode.flags & RL78_PSW_CY)
214 
                    { PR (PS, "%sCY", comma); comma = ","; }
215 
                  PR (PS, "\033[0m");
216 
                }
217 
              break;
218 
 
219 
#endif
220 
 
221 
            case '0':
222 
            case '1':
223 
              oper = opcode.op + *s - '0';
224 
              if (do_bang)
225 
                PC ('!');
226 
 
227 
              if (do_es)
228 
                {
229 
                  if (oper->use_es && indirect_type (oper->type))
230 
                    PR (PS, "es:");
231 
                }
232 
 
233 
              else if (do_cond)
234 
                {
235 
                  PR (PS, "%s", condition_names[oper->condition]);
236 
                }
237 
 
238 
              else
239 
                switch (oper->type)
240 
                  {
241 
                  case RL78_Operand_Immediate:
242 
                    if (do_addr)
243 
                      dis->print_address_func (oper->addend, dis);
244 
                    else if (do_hex
245 
                             || oper->addend > 999
246 
                             || oper->addend < -999)
247 
                      PR (PS, "%#x", oper->addend);
248 
                    else
249 
                      PR (PS, "%d", oper->addend);
250 
                    break;
251 
 
252 
                  case RL78_Operand_Register:
253 
                    PR (PS, "%s", register_names[oper->reg]);
254 
                    break;
255 
 
256 
                  case RL78_Operand_Bit:
257 
                    PR (PS, "%s.%d", register_names[oper->reg], oper->bit_number);
258 
                    break;
259 
 
260 
                  case RL78_Operand_Indirect:
261 
                  case RL78_Operand_BitIndirect:
262 
                    switch (oper->reg)
263 
                      {
264 
                      case RL78_Reg_None:
265 
                        if (oper->addend == 0xffffa && do_sfr && opcode.size == RL78_Byte)
266 
                          PR (PS, "psw");
267 
                        else if (oper->addend == 0xffff8 && do_sfr && opcode.size == RL78_Word)
268 
                          PR (PS, "sp");
269 
                        else if (oper->addend >= 0xffe20)
270 
                          PR (PS, "%#x", oper->addend);
271 
                        else
272 
                          dis->print_address_func (oper->addend, dis);
273 
                        break;
274 
 
275 
                      case RL78_Reg_B:
276 
                      case RL78_Reg_C:
277 
                      case RL78_Reg_BC:
278 
                        PR (PS, "%d[%s]", oper->addend, register_names[oper->reg]);
279 
                        break;
280 
 
281 
                      default:
282 
                        PR (PS, "[%s", register_names[oper->reg]);
283 
                        if (oper->reg2 != RL78_Reg_None)
284 
                          PR (PS, "+%s", register_names[oper->reg2]);
285 
                        if (oper->addend)
286 
                          PR (PS, "+%d", oper->addend);
287 
                        PC (']');
288 
                        break;
289 
 
290 
                      }
291 
                    if (oper->type == RL78_Operand_BitIndirect)
292 
                      PR (PS, ".%d", oper->bit_number);
293 
                    break;
294 
 
295 
#if DEBUG_SEMANTICS
296 
                    /* Shouldn't happen - push and pop don't print
297 
                       [SP] directly.  But we *do* use them for
298 
                       semantic debugging.  */
299 
                  case RL78_Operand_PostInc:
300 
                    PR (PS, "[%s++]", register_names[oper->reg]);
301 
                    break;
302 
                  case RL78_Operand_PreDec:
303 
                    PR (PS, "[--%s]", register_names[oper->reg]);
304 
                    break;
305 
#endif
306 
 
307 
                  default:
308 
                    /* If we ever print this, that means the
309 
                       programmer tried to print an operand with a
310 
                       type we don't expect.  Print the line and
311 
                       operand number from rl78-decode.opc for
312 
                       them.  */
313 
                    PR (PS, "???%d.%d", opcode.lineno, *s - '0');
314 
                    break;
315 
                  }
316 
            }
317 
        }
318 
    }
319 
 
320 
#if DEBUG_SEMANTICS
321 
 
322 
  PR (PS, "\t\033[34m(line %d)\033[0m", opcode.lineno);
323 
 
324 
#endif
325 
 
326 
  return rv;
327 
}

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