Coverage Report

Created: 2025-06-24 06:45

/src/binutils-gdb/opcodes/rl78-dis.c
Line
Count
Source (jump to first uncovered line)
1
/* Disassembler code for Renesas RL78.
2
   Copyright (C) 2011-2025 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 "elf-bfd.h"
28
#include "disassemble.h"
29
#include "opcode/rl78.h"
30
#include "elf/rl78.h"
31
32
#include <setjmp.h>
33
34
#define DEBUG_SEMANTICS 0
35
36
typedef struct
37
{
38
  bfd_vma pc;
39
  disassemble_info * dis;
40
} RL78_Data;
41
42
struct private
43
{
44
  OPCODES_SIGJMP_BUF bailout;
45
};
46
47
static int
48
rl78_get_byte (void * vdata)
49
5.94M
{
50
5.94M
  bfd_byte buf[1];
51
5.94M
  RL78_Data *rl78_data = (RL78_Data *) vdata;
52
5.94M
  int status;
53
54
5.94M
  status = rl78_data->dis->read_memory_func (rl78_data->pc,
55
5.94M
               buf,
56
5.94M
               1,
57
5.94M
               rl78_data->dis);
58
5.94M
  if (status != 0)
59
1.34k
    {
60
1.34k
      struct private *priv = (struct private *) rl78_data->dis->private_data;
61
62
1.34k
      rl78_data->dis->memory_error_func (status, rl78_data->pc,
63
1.34k
           rl78_data->dis);
64
1.34k
      OPCODES_SIGLONGJMP (priv->bailout, 1);
65
1.34k
    }
66
67
5.94M
  rl78_data->pc ++;
68
5.94M
  return buf[0];
69
5.94M
}
70
71
static char const *
72
register_names[] =
73
{
74
  "",
75
  "x", "a", "c", "b", "e", "d", "l", "h",
76
  "ax", "bc", "de", "hl",
77
  "sp", "psw", "cs", "es", "pmc", "mem"
78
};
79
80
static char const *
81
condition_names[] =
82
{
83
  "t", "f", "c", "nc", "h", "nh", "z", "nz"
84
};
85
86
static int
87
indirect_type (int t)
88
13.2k
{
89
13.2k
  switch (t)
90
13.2k
    {
91
12.4k
    case RL78_Operand_Indirect:
92
13.0k
    case RL78_Operand_BitIndirect:
93
13.0k
    case RL78_Operand_PostInc:
94
13.0k
    case RL78_Operand_PreDec:
95
13.0k
      return 1;
96
172
    default:
97
172
      return 0;
98
13.2k
    }
99
13.2k
}
100
101
static int
102
print_insn_rl78_common (bfd_vma addr, disassemble_info * dis, RL78_Dis_Isa isa)
103
3.45M
{
104
3.45M
  int rv;
105
3.45M
  RL78_Data rl78_data;
106
3.45M
  RL78_Opcode_Decoded opcode;
107
3.45M
  const char * s;
108
#if DEBUG_SEMANTICS
109
  static char buf[200];
110
#endif
111
3.45M
  struct private priv;
112
113
3.45M
  dis->private_data = &priv;
114
3.45M
  rl78_data.pc = addr;
115
3.45M
  rl78_data.dis = dis;
116
117
3.45M
  if (OPCODES_SIGSETJMP (priv.bailout) != 0)
118
1.34k
    {
119
      /* Error return.  */
120
1.34k
      return -1;
121
1.34k
    }
122
123
3.45M
  rv = rl78_decode_opcode (addr, &opcode, rl78_get_byte, &rl78_data, isa);
124
125
3.45M
  dis->bytes_per_line = 10;
126
127
22.7M
#define PR (dis->fprintf_func)
128
22.7M
#define PS (dis->stream)
129
18.8M
#define PC(c) PR (PS, "%c", c)
130
131
3.45M
  s = opcode.syntax;
132
133
#if DEBUG_SEMANTICS
134
135
  switch (opcode.id)
136
    {
137
    case RLO_unknown: s = "uknown"; break;
138
    case RLO_add: s = "add: %e0%0 += %e1%1"; break;
139
    case RLO_addc: s = "addc: %e0%0 += %e1%1 + CY"; break;
140
    case RLO_and: s = "and: %e0%0 &= %e1%1"; break;
141
    case RLO_branch: s = "branch: pc = %e0%0"; break;
142
    case RLO_branch_cond: s = "branch_cond: pc = %e0%0 if %c1 / %e1%1"; break;
143
    case RLO_branch_cond_clear: s = "branch_cond_clear: pc = %e0%0 if %c1 / %e1%1, %e1%1 = 0"; break;
144
    case RLO_call: s = "call: pc = %e1%0"; break;
145
    case RLO_cmp: s = "cmp: %e0%0 - %e1%1"; break;
146
    case RLO_mov: s = "mov: %e0%0 = %e1%1"; break;
147
    case RLO_or: s = "or: %e0%0 |= %e1%1"; break;
148
    case RLO_rol: s = "rol: %e0%0 <<= %e1%1"; break;
149
    case RLO_rolc: s = "rol: %e0%0 <<= %e1%1,CY"; break;
150
    case RLO_ror: s = "ror: %e0%0 >>= %e1%1"; break;
151
    case RLO_rorc: s = "ror: %e0%0 >>= %e1%1,CY"; break;
152
    case RLO_sar: s = "sar: %e0%0 >>= %e1%1 signed"; break;
153
    case RLO_sel: s = "sel: rb = %1"; break;
154
    case RLO_shr: s = "shr: %e0%0 >>= %e1%1 unsigned"; break;
155
    case RLO_shl: s = "shl: %e0%0 <<= %e1%1"; break;
156
    case RLO_skip: s = "skip: if %c1"; break;
157
    case RLO_sub: s = "sub: %e0%0 -= %e1%1"; break;
158
    case RLO_subc: s = "subc: %e0%0 -= %e1%1 - CY"; break;
159
    case RLO_xch: s = "xch: %e0%0 <-> %e1%1"; break;
160
    case RLO_xor: s = "xor: %e0%0 ^= %e1%1"; break;
161
    }
162
163
  sprintf(buf, "%s%%W%%f\t\033[32m%s\033[0m", s, opcode.syntax);
164
  s = buf;
165
166
#endif
167
168
25.6M
  for (; *s; s++)
169
22.1M
    {
170
22.1M
      if (*s != '%')
171
18.2M
  {
172
18.2M
    PC (*s);
173
18.2M
  }
174
3.89M
      else
175
3.89M
  {
176
3.89M
    RL78_Opcode_Operand * oper;
177
3.89M
    int do_hex = 0;
178
3.89M
    int do_addr = 0;
179
3.89M
    int do_es = 0;
180
3.89M
    int do_sfr = 0;
181
3.89M
    int do_cond = 0;
182
3.89M
    int do_bang = 0;
183
184
5.12M
    while (1)
185
5.12M
      {
186
5.12M
        s ++;
187
5.12M
        switch (*s)
188
5.12M
    {
189
15.4k
    case 'x':
190
15.4k
      do_hex = 1;
191
15.4k
      break;
192
254k
    case '!':
193
254k
      do_bang = 1;
194
254k
      break;
195
592k
    case 'e':
196
592k
      do_es = 1;
197
592k
      break;
198
260k
    case 'a':
199
260k
      do_addr = 1;
200
260k
      break;
201
103k
    case 's':
202
103k
      do_sfr = 1;
203
103k
      break;
204
1.24k
    case 'c':
205
1.24k
      do_cond = 1;
206
1.24k
      break;
207
3.89M
    default:
208
3.89M
      goto no_more_modifiers;
209
5.12M
    }
210
5.12M
      }
211
3.89M
  no_more_modifiers:;
212
213
3.89M
    switch (*s)
214
3.89M
      {
215
0
      case '%':
216
0
        PC ('%');
217
0
        break;
218
219
#if DEBUG_SEMANTICS
220
221
      case 'W':
222
        if (opcode.size == RL78_Word)
223
    PR (PS, " \033[33mW\033[0m");
224
        break;
225
226
      case 'f':
227
        if (opcode.flags)
228
    {
229
      char *comma = "";
230
      PR (PS, "  \033[35m");
231
232
      if (opcode.flags & RL78_PSW_Z)
233
        { PR (PS, "Z"); comma = ","; }
234
      if (opcode.flags & RL78_PSW_AC)
235
        { PR (PS, "%sAC", comma); comma = ","; }
236
      if (opcode.flags & RL78_PSW_CY)
237
        { PR (PS, "%sCY", comma); comma = ","; }
238
      PR (PS, "\033[0m");
239
    }
240
        break;
241
242
#endif
243
244
2.23M
      case '0':
245
3.89M
      case '1':
246
3.89M
        oper = *s == '0' ? &opcode.op[0] : &opcode.op[1];
247
3.89M
      if (do_es)
248
592k
        {
249
592k
    if (oper->use_es && indirect_type (oper->type))
250
13.0k
      PR (PS, "es:");
251
592k
        }
252
253
3.89M
      if (do_bang)
254
254k
        {
255
    /* If we are going to display SP by name, we must omit the bang.  */
256
254k
    if ((oper->type == RL78_Operand_Indirect
257
254k
         || oper->type == RL78_Operand_BitIndirect)
258
254k
        && oper->reg == RL78_Reg_None
259
254k
        && do_sfr
260
254k
        && ((oper->addend == 0xffff8 && opcode.size == RL78_Word)
261
11.9k
      || (oper->addend == 0x0fff8 && do_es && opcode.size == RL78_Word)))
262
122
      ;
263
254k
    else
264
254k
      PC ('!');
265
254k
        }
266
267
3.89M
      if (do_cond)
268
1.24k
        {
269
1.24k
    PR (PS, "%s", condition_names[oper->condition]);
270
1.24k
    break;
271
1.24k
        }
272
273
3.89M
      switch (oper->type)
274
3.89M
        {
275
471k
        case RL78_Operand_Immediate:
276
471k
    if (do_addr)
277
102k
      dis->print_address_func (oper->addend, dis);
278
369k
    else if (do_hex
279
369k
       || oper->addend > 999
280
369k
       || oper->addend < -999)
281
76.8k
      PR (PS, "%#x", oper->addend);
282
292k
    else
283
292k
      PR (PS, "%d", oper->addend);
284
471k
    break;
285
286
2.36M
        case RL78_Operand_Register:
287
2.36M
    PR (PS, "%s", register_names[oper->reg]);
288
2.36M
    break;
289
290
21.9k
        case RL78_Operand_Bit:
291
21.9k
    PR (PS, "%s.%d", register_names[oper->reg], oper->bit_number);
292
21.9k
    break;
293
294
894k
        case RL78_Operand_Indirect:
295
1.03M
        case RL78_Operand_BitIndirect:
296
1.03M
    switch (oper->reg)
297
1.03M
      {
298
631k
      case RL78_Reg_None:
299
631k
        if (oper->addend == 0xffffa && do_sfr && opcode.size == RL78_Byte)
300
415
          PR (PS, "psw");
301
630k
        else if (oper->addend == 0xffff8 && do_sfr && opcode.size == RL78_Word)
302
121
          PR (PS, "sp");
303
630k
        else if (oper->addend == 0x0fff8 && do_sfr && do_es && opcode.size == RL78_Word)
304
122
          PR (PS, "sp");
305
630k
                    else if (oper->addend == 0xffff8 && do_sfr && opcode.size == RL78_Byte)
306
396
                      PR (PS, "spl");
307
630k
                    else if (oper->addend == 0xffff9 && do_sfr && opcode.size == RL78_Byte)
308
340
                      PR (PS, "sph");
309
629k
                    else if (oper->addend == 0xffffc && do_sfr && opcode.size == RL78_Byte)
310
759
                      PR (PS, "cs");
311
628k
                    else if (oper->addend == 0xffffd && do_sfr && opcode.size == RL78_Byte)
312
332
                      PR (PS, "es");
313
628k
                    else if (oper->addend == 0xffffe && do_sfr && opcode.size == RL78_Byte)
314
935
                      PR (PS, "pmc");
315
627k
                    else if (oper->addend == 0xfffff && do_sfr && opcode.size == RL78_Byte)
316
727
                      PR (PS, "mem");
317
626k
        else if (oper->addend >= 0xffe20)
318
409k
          PR (PS, "%#x", oper->addend);
319
217k
        else
320
217k
          {
321
217k
      int faddr = oper->addend;
322
217k
      if (do_es && ! oper->use_es)
323
198k
        faddr += 0xf0000;
324
217k
      dis->print_address_func (faddr, dis);
325
217k
          }
326
631k
        break;
327
328
23.7k
      case RL78_Reg_B:
329
68.6k
      case RL78_Reg_C:
330
96.0k
      case RL78_Reg_BC:
331
96.0k
        PR (PS, "%d[%s]", oper->addend, register_names[oper->reg]);
332
96.0k
        break;
333
334
312k
      default:
335
312k
        PR (PS, "[%s", register_names[oper->reg]);
336
312k
        if (oper->reg2 != RL78_Reg_None)
337
9.28k
          PR (PS, "+%s", register_names[oper->reg2]);
338
312k
        if (oper->addend || do_addr)
339
158k
          PR (PS, "+%d", oper->addend);
340
312k
        PC (']');
341
312k
        break;
342
343
1.03M
      }
344
1.03M
    if (oper->type == RL78_Operand_BitIndirect)
345
144k
      PR (PS, ".%d", oper->bit_number);
346
1.03M
    break;
347
348
#if DEBUG_SEMANTICS
349
    /* Shouldn't happen - push and pop don't print
350
       [SP] directly.  But we *do* use them for
351
       semantic debugging.  */
352
        case RL78_Operand_PostInc:
353
    PR (PS, "[%s++]", register_names[oper->reg]);
354
    break;
355
        case RL78_Operand_PreDec:
356
    PR (PS, "[--%s]", register_names[oper->reg]);
357
    break;
358
#endif
359
360
0
        default:
361
    /* If we ever print this, that means the
362
       programmer tried to print an operand with a
363
       type we don't expect.  Print the line and
364
       operand number from rl78-decode.opc for
365
       them.  */
366
0
    PR (PS, "???%d.%d", opcode.lineno, *s - '0');
367
0
    break;
368
3.89M
        }
369
3.89M
      }
370
3.89M
  }
371
22.1M
    }
372
373
#if DEBUG_SEMANTICS
374
375
  PR (PS, "\t\033[34m(line %d)\033[0m", opcode.lineno);
376
377
#endif
378
379
3.45M
  return rv;
380
3.45M
}
381
382
int
383
print_insn_rl78 (bfd_vma addr, disassemble_info * dis)
384
3.45M
{
385
3.45M
  return print_insn_rl78_common (addr, dis, RL78_ISA_DEFAULT);
386
3.45M
}
387
388
int
389
print_insn_rl78_g10 (bfd_vma addr, disassemble_info * dis)
390
0
{
391
0
  return print_insn_rl78_common (addr, dis, RL78_ISA_G10);
392
0
}
393
394
int
395
print_insn_rl78_g13 (bfd_vma addr, disassemble_info * dis)
396
0
{
397
0
  return print_insn_rl78_common (addr, dis, RL78_ISA_G13);
398
0
}
399
400
int
401
print_insn_rl78_g14 (bfd_vma addr, disassemble_info * dis)
402
0
{
403
0
  return print_insn_rl78_common (addr, dis, RL78_ISA_G14);
404
0
}
405
406
disassembler_ftype
407
rl78_get_disassembler (bfd *abfd)
408
4.64k
{
409
4.64k
  int cpu = E_FLAG_RL78_ANY_CPU;
410
411
4.64k
  if (abfd != NULL && bfd_get_flavour (abfd) == bfd_target_elf_flavour)
412
0
    cpu = abfd->tdata.elf_obj_data->elf_header->e_flags & E_FLAG_RL78_CPU_MASK;
413
414
4.64k
  switch (cpu)
415
4.64k
    {
416
0
    case E_FLAG_RL78_G10:
417
0
      return print_insn_rl78_g10;
418
0
    case E_FLAG_RL78_G13:
419
0
      return print_insn_rl78_g13;
420
0
    case E_FLAG_RL78_G14:
421
0
      return print_insn_rl78_g14;
422
4.64k
    default:
423
4.64k
      return print_insn_rl78;
424
4.64k
    }
425
4.64k
}