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[/] [or1k/] [trunk/] [gdb-5.0/] [sim/] [common/] [sim-n-core.h] - Blame information for rev 107

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1 106 markom
/*  This file is part of the program psim.
2
 
3
    Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
4
 
5
    This program is free software; you can redistribute it and/or modify
6
    it under the terms of the GNU General Public License as published by
7
    the Free Software Foundation; either version 2 of the License, or
8
    (at your option) any later version.
9
 
10
    This program is distributed in the hope that it will be useful,
11
    but WITHOUT ANY WARRANTY; without even the implied warranty of
12
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13
    GNU General Public License for more details.
14
 
15
    You should have received a copy of the GNU General Public License
16
    along with this program; if not, write to the Free Software
17
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18
 
19
    */
20
 
21
 
22
#ifndef N
23
#error "N must be #defined"
24
#endif
25
#ifndef M
26
#define M N
27
#endif
28
 
29
/* N: The number of bytes of data to transfer.
30
   M: The number of bytes in the type used to transfer the data */
31
 
32
#if (N > M)
33
#error "N (nr bytes of data) must be <= M (nr of bytes in data type)"
34
#endif
35
 
36
 
37
#include "symcat.h"
38
 
39
/* NOTE: see end of file for #undef of these macros */
40
 
41
#define unsigned_M XCONCAT2(unsigned_,M)
42
 
43
#define T2H_M XCONCAT2(T2H_,M)
44
#define H2T_M XCONCAT2(H2T_,M)
45
#define SWAP_M XCONCAT2(SWAP_,M)
46
 
47
#define sim_core_read_aligned_N XCONCAT2(sim_core_read_aligned_,N)
48
#define sim_core_read_unaligned_N XCONCAT2(sim_core_read_unaligned_,N)
49
#define sim_core_read_misaligned_N XCONCAT2(sim_core_read_misaligned_,N)
50
#define sim_core_write_aligned_N XCONCAT2(sim_core_write_aligned_,N)
51
#define sim_core_write_unaligned_N XCONCAT2(sim_core_write_unaligned_,N)
52
#define sim_core_write_misaligned_N XCONCAT2(sim_core_write_misaligned_,N)
53
#define sim_core_trace_M XCONCAT2(sim_core_trace_,M)
54
#define sim_core_dummy_M XCONCAT2(sim_core_dummy_,M)
55
 
56
 
57
#if (M == N && N > 1)
58
/* dummy variable used as a return value when nothing else is
59
   available and the compiler is complaining */
60
static unsigned_M sim_core_dummy_M;
61
#endif
62
 
63
 
64
/* TAGS: sim_core_trace_1 sim_core_trace_2 */
65
/* TAGS: sim_core_trace_4 sim_core_trace_8 */
66
/* TAGS: sim_core_trace_16 */
67
 
68
#if (M == N)
69
STATIC_SIM_CORE(void)
70
sim_core_trace_M (sim_cpu *cpu,
71
                  sim_cia cia,
72
                  int line_nr,
73
                  transfer_type type,
74
                  unsigned map,
75
                  address_word addr,
76
                  unsigned_M val,
77
                  int nr_bytes)
78
{
79
  const char *transfer = (type == read_transfer ? "read" : "write");
80
  const char *direction = (type == read_transfer ? "->" : "<-");
81
 
82
  if (TRACE_DEBUG_P (cpu))
83
    trace_printf (CPU_STATE (cpu), cpu, "sim-n-core.h:%d: ", line_nr);
84
 
85
#if (M == 16)
86
  trace_printf (CPU_STATE (cpu), cpu,
87
                "%s-%d %s:0x%08lx %s 0x%08lx%08lx%08lx%08lx\n",
88
                transfer, nr_bytes,
89
                map_to_str (map),
90
                (unsigned long) addr,
91
                direction,
92
                (unsigned long) V4_16 (val, 0),
93
                (unsigned long) V4_16 (val, 1),
94
                (unsigned long) V4_16 (val, 2),
95
                (unsigned long) V4_16 (val, 3));
96
#endif
97
#if (M == 8)
98
  trace_printf (CPU_STATE (cpu), cpu,
99
                "%s-%d %s:0x%08lx %s 0x%08lx%08lx\n",
100
                transfer, nr_bytes,
101
                map_to_str (map),
102
                (unsigned long) addr,
103
                direction,
104
                (unsigned long) V4_8 (val, 0),
105
                (unsigned long) V4_8 (val, 1));
106
#endif
107
#if (M == 4)
108
  trace_printf (CPU_STATE (cpu), cpu,
109
                "%s-%d %s:0x%08lx %s 0x%08lx\n",
110
                transfer,
111
                nr_bytes,
112
                map_to_str (map),
113
                (unsigned long) addr,
114
                direction,
115
                (unsigned long) val);
116
#endif
117
#if (M == 2)
118
  trace_printf (CPU_STATE (cpu), cpu,
119
                "%s-%d %s:0x%08lx %s 0x%04lx\n",
120
                transfer,
121
                nr_bytes,
122
                map_to_str (map),
123
                (unsigned long) addr,
124
                direction,
125
                (unsigned long) val);
126
#endif
127
#if (M == 1)
128
  trace_printf (CPU_STATE (cpu), cpu,
129
                "%s-%d %s:0x%08lx %s 0x%02lx\n",
130
                transfer,
131
                nr_bytes,
132
                map_to_str (map),
133
                (unsigned long) addr,
134
                direction,
135
                (unsigned long) val);
136
#endif
137
}
138
#endif
139
 
140
 
141
/* TAGS: sim_core_read_aligned_1 sim_core_read_aligned_2 */
142
/* TAGS: sim_core_read_aligned_4 sim_core_read_aligned_8 */
143
/* TAGS: sim_core_read_aligned_16 */
144
 
145
#if (M == N)
146
INLINE_SIM_CORE(unsigned_M)
147
sim_core_read_aligned_N(sim_cpu *cpu,
148
                        sim_cia cia,
149
                        unsigned map,
150
                        address_word xaddr)
151
{
152
  sim_cpu_core *cpu_core = CPU_CORE (cpu);
153
  sim_core_common *core = &cpu_core->common;
154
  unsigned_M val;
155
  sim_core_mapping *mapping;
156
  address_word addr;
157
#if WITH_XOR_ENDIAN != 0
158
  if (WITH_XOR_ENDIAN)
159
    addr = xaddr ^ cpu_core->xor[(N - 1) % WITH_XOR_ENDIAN];
160
  else
161
#endif
162
    addr = xaddr;
163
  mapping = sim_core_find_mapping (core, map, addr, N, read_transfer, 1 /*abort*/, cpu, cia);
164
  do
165
    {
166
#if (WITH_DEVICES)
167
      if (WITH_CALLBACK_MEMORY && mapping->device != NULL)
168
        {
169
          unsigned_M data;
170
          if (device_io_read_buffer (mapping->device, &data, mapping->space, addr, N, CPU_STATE (cpu), cpu, cia) != N)
171
            device_error (mapping->device, "internal error - %s - io_read_buffer should not fail",
172
                          XSTRING (sim_core_read_aligned_N));
173
          val = T2H_M (data);
174
          break;
175
        }
176
#endif
177
#if (WITH_HW)
178
      if (WITH_CALLBACK_MEMORY && mapping->device != NULL)
179
        {
180
          unsigned_M data;
181
          sim_cpu_hw_io_read_buffer (cpu, cia, mapping->device, &data, mapping->space, addr, N);
182
          val = T2H_M (data);
183
          break;
184
        }
185
#endif
186
      val = T2H_M (*(unsigned_M*) sim_core_translate (mapping, addr));
187
    }
188
  while (0);
189
  PROFILE_COUNT_CORE (cpu, addr, N, map);
190
  if (TRACE_P (cpu, TRACE_CORE_IDX))
191
    sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N);
192
  return val;
193
}
194
#endif
195
 
196
/* TAGS: sim_core_read_unaligned_1 sim_core_read_unaligned_2 */
197
/* TAGS: sim_core_read_unaligned_4 sim_core_read_unaligned_8 */
198
/* TAGS: sim_core_read_unaligned_16 */
199
 
200
#if (M == N && N > 1)
201
INLINE_SIM_CORE(unsigned_M)
202
sim_core_read_unaligned_N(sim_cpu *cpu,
203
                          sim_cia cia,
204
                          unsigned map,
205
                          address_word addr)
206
{
207
  int alignment = N - 1;
208
  /* if hardwired to forced alignment just do it */
209
  if (WITH_ALIGNMENT == FORCED_ALIGNMENT)
210
    return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment);
211
  else if ((addr & alignment) == 0)
212
    return sim_core_read_aligned_N (cpu, cia, map, addr);
213
  else
214
    switch (CURRENT_ALIGNMENT)
215
      {
216
      case STRICT_ALIGNMENT:
217
        SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
218
                         read_transfer, sim_core_unaligned_signal);
219
      case NONSTRICT_ALIGNMENT:
220
        {
221
          unsigned_M val;
222
          if (sim_core_xor_read_buffer (CPU_STATE (cpu), cpu, map, &val, addr, N) != N)
223
            SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
224
                             read_transfer, sim_core_unaligned_signal);
225
          val = T2H_M(val);
226
          PROFILE_COUNT_CORE (cpu, addr, N, map);
227
          if (TRACE_P (cpu, TRACE_CORE_IDX))
228
            sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N);
229
          return val;
230
        }
231
      case FORCED_ALIGNMENT:
232
        return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment);
233
      case MIXED_ALIGNMENT:
234
        sim_engine_abort (CPU_STATE (cpu), cpu, cia,
235
                          "internal error - %s - mixed alignment",
236
                          XSTRING (sim_core_read_unaligned_N));
237
      default:
238
        sim_engine_abort (CPU_STATE (cpu), cpu, cia,
239
                          "internal error - %s - bad switch",
240
                          XSTRING (sim_core_read_unaligned_N));
241
        /* to keep some compilers happy, we return a dummy */
242
        return sim_core_dummy_M;
243
      }
244
}
245
#endif
246
 
247
/* TAGS: sim_core_read_misaligned_3 sim_core_read_misaligned_5 */
248
/* TAGS: sim_core_read_misaligned_6 sim_core_read_misaligned_7 */
249
 
250
#if (M != N)
251
INLINE_SIM_CORE(unsigned_M)
252
sim_core_read_misaligned_N(sim_cpu *cpu,
253
                          sim_cia cia,
254
                          unsigned map,
255
                          address_word addr)
256
{
257
  unsigned_M val = 0;
258
  if (sim_core_xor_read_buffer (CPU_STATE (cpu), cpu, map, &val, addr, N) != N)
259
    SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
260
                     read_transfer, sim_core_unaligned_signal);
261
  if (CURRENT_HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER)
262
    val = SWAP_M (val);
263
  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN)
264
    val >>= (M - N) * 8;
265
  PROFILE_COUNT_CORE (cpu, addr, N, map);
266
  if (TRACE_P (cpu, TRACE_CORE_IDX))
267
    sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N);
268
  return val;
269
}
270
#endif
271
 
272
/* TAGS: sim_core_write_aligned_1 sim_core_write_aligned_2 */
273
/* TAGS: sim_core_write_aligned_4 sim_core_write_aligned_8 */
274
/* TAGS: sim_core_write_aligned_16 */
275
 
276
#if (M == N)
277
INLINE_SIM_CORE(void)
278
sim_core_write_aligned_N(sim_cpu *cpu,
279
                         sim_cia cia,
280
                         unsigned map,
281
                         address_word xaddr,
282
                         unsigned_M val)
283
{
284
  sim_cpu_core *cpu_core = CPU_CORE (cpu);
285
  sim_core_common *core = &cpu_core->common;
286
  sim_core_mapping *mapping;
287
  address_word addr;
288
#if WITH_XOR_ENDIAN != 0
289
  if (WITH_XOR_ENDIAN)
290
    addr = xaddr ^ cpu_core->xor[(N - 1) % WITH_XOR_ENDIAN];
291
  else
292
#endif
293
    addr = xaddr;
294
  mapping = sim_core_find_mapping (core, map, addr, N, write_transfer, 1 /*abort*/, cpu, cia);
295
  do
296
    {
297
#if (WITH_DEVICES)
298
      if (WITH_CALLBACK_MEMORY && mapping->device != NULL)
299
        {
300
          unsigned_M data = H2T_M (val);
301
          if (device_io_write_buffer (mapping->device, &data, mapping->space, addr, N, CPU_STATE (cpu), cpu, cia) != N)
302
            device_error (mapping->device, "internal error - %s - io_write_buffer should not fail",
303
                          XSTRING (sim_core_write_aligned_N));
304
          break;
305
        }
306
#endif
307
#if (WITH_HW)
308
      if (WITH_CALLBACK_MEMORY && mapping->device != NULL)
309
        {
310
          unsigned_M data = H2T_M (val);
311
          sim_cpu_hw_io_write_buffer (cpu, cia, mapping->device, &data, mapping->space, addr, N);
312
          break;
313
        }
314
#endif
315
      *(unsigned_M*) sim_core_translate (mapping, addr) = H2T_M (val);
316
    }
317
  while (0);
318
  PROFILE_COUNT_CORE (cpu, addr, N, map);
319
  if (TRACE_P (cpu, TRACE_CORE_IDX))
320
    sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N);
321
}
322
#endif
323
 
324
/* TAGS: sim_core_write_unaligned_1 sim_core_write_unaligned_2 */
325
/* TAGS: sim_core_write_unaligned_4 sim_core_write_unaligned_8 */
326
/* TAGS: sim_core_write_unaligned_16 */
327
 
328
#if (M == N && N > 1)
329
INLINE_SIM_CORE(void)
330
sim_core_write_unaligned_N(sim_cpu *cpu,
331
                           sim_cia cia,
332
                           unsigned map,
333
                           address_word addr,
334
                           unsigned_M val)
335
{
336
  int alignment = N - 1;
337
  /* if hardwired to forced alignment just do it */
338
  if (WITH_ALIGNMENT == FORCED_ALIGNMENT)
339
    sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val);
340
  else if ((addr & alignment) == 0)
341
    sim_core_write_aligned_N (cpu, cia, map, addr, val);
342
  else
343
    switch (CURRENT_ALIGNMENT)
344
      {
345
      case STRICT_ALIGNMENT:
346
        SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
347
                         write_transfer, sim_core_unaligned_signal);
348
        break;
349
      case NONSTRICT_ALIGNMENT:
350
        {
351
          unsigned_M data = H2T_M (val);
352
          if (sim_core_xor_write_buffer (CPU_STATE (cpu), cpu, map, &data, addr, N) != N)
353
            SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
354
                             write_transfer, sim_core_unaligned_signal);
355
          PROFILE_COUNT_CORE (cpu, addr, N, map);
356
          if (TRACE_P (cpu, TRACE_CORE_IDX))
357
            sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N);
358
          break;
359
        }
360
      case FORCED_ALIGNMENT:
361
        sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val);
362
        break;
363
      case MIXED_ALIGNMENT:
364
        sim_engine_abort (CPU_STATE (cpu), cpu, cia,
365
                          "internal error - %s - mixed alignment",
366
                          XSTRING (sim_core_write_unaligned_N));
367
        break;
368
      default:
369
        sim_engine_abort (CPU_STATE (cpu), cpu, cia,
370
                          "internal error - %s - bad switch",
371
                          XSTRING (sim_core_write_unaligned_N));
372
        break;
373
      }
374
}
375
#endif
376
 
377
/* TAGS: sim_core_write_misaligned_3 sim_core_write_misaligned_5 */
378
/* TAGS: sim_core_write_misaligned_6 sim_core_write_misaligned_7 */
379
 
380
#if (M != N)
381
INLINE_SIM_CORE(void)
382
sim_core_write_misaligned_N(sim_cpu *cpu,
383
                           sim_cia cia,
384
                           unsigned map,
385
                           address_word addr,
386
                           unsigned_M val)
387
{
388
  unsigned_M data = val;
389
  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN)
390
    data <<= (M - N) * 8;
391
  if (CURRENT_HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER)
392
    data = SWAP_M (data);
393
  if (sim_core_xor_write_buffer (CPU_STATE (cpu), cpu, map, &data, addr, N) != N)
394
    SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr,
395
                     write_transfer, sim_core_unaligned_signal);
396
  PROFILE_COUNT_CORE (cpu, addr, N, map);
397
  if (TRACE_P (cpu, TRACE_CORE_IDX))
398
    sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N);
399
}
400
#endif
401
 
402
 
403
/* NOTE: see start of file for #define of these macros */
404
#undef unsigned_M
405
#undef T2H_M
406
#undef H2T_M
407
#undef SWAP_M
408
#undef sim_core_read_aligned_N
409
#undef sim_core_read_unaligned_N
410
#undef sim_core_read_misaligned_N
411
#undef sim_core_write_aligned_N
412
#undef sim_core_write_unaligned_N
413
#undef sim_core_write_misaligned_N
414
#undef sim_core_trace_M
415
#undef sim_core_dummy_M
416
#undef M
417
#undef N

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