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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
9b254dd1 | 3 | Copyright 2002, 2007, 2008 Free Software Foundation, Inc. |
b85e4829 AC |
4 | |
5 | Contributed by Andrew Cagney and Red Hat. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
4744ac1b | 11 | the Free Software Foundation; either version 3 of the License, or |
b85e4829 AC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
4744ac1b | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | ||
23 | #ifndef N | |
24 | #error "N must be #defined" | |
25 | #endif | |
26 | #ifndef M | |
27 | #define M N | |
28 | #endif | |
29 | ||
30 | /* N: The number of bytes of data to transfer. | |
31 | M: The number of bytes in the type used to transfer the data */ | |
32 | ||
33 | #if (N > M) | |
34 | #error "N (nr bytes of data) must be <= M (nr of bytes in data type)" | |
35 | #endif | |
36 | ||
37 | ||
38 | #include "symcat.h" | |
39 | ||
40 | /* NOTE: see end of file for #undef of these macros */ | |
41 | ||
42 | #define unsigned_M XCONCAT2(unsigned_,M) | |
43 | ||
44 | #define T2H_M XCONCAT2(T2H_,M) | |
45 | #define H2T_M XCONCAT2(H2T_,M) | |
46 | #define SWAP_M XCONCAT2(SWAP_,M) | |
47 | ||
48 | #define sim_core_read_aligned_N XCONCAT2(sim_core_read_aligned_,N) | |
49 | #define sim_core_read_unaligned_N XCONCAT2(sim_core_read_unaligned_,N) | |
50 | #define sim_core_read_misaligned_N XCONCAT2(sim_core_read_misaligned_,N) | |
51 | #define sim_core_write_aligned_N XCONCAT2(sim_core_write_aligned_,N) | |
52 | #define sim_core_write_unaligned_N XCONCAT2(sim_core_write_unaligned_,N) | |
53 | #define sim_core_write_misaligned_N XCONCAT2(sim_core_write_misaligned_,N) | |
54 | #define sim_core_trace_M XCONCAT2(sim_core_trace_,M) | |
55 | #define sim_core_dummy_M XCONCAT2(sim_core_dummy_,M) | |
56 | ||
57 | ||
58 | #if (M == N && N > 1) | |
59 | /* dummy variable used as a return value when nothing else is | |
60 | available and the compiler is complaining */ | |
61 | static unsigned_M sim_core_dummy_M; | |
62 | #endif | |
63 | ||
64 | ||
65 | /* TAGS: sim_core_trace_1 sim_core_trace_2 */ | |
66 | /* TAGS: sim_core_trace_4 sim_core_trace_8 */ | |
67 | /* TAGS: sim_core_trace_16 */ | |
68 | ||
69 | #if (M == N) | |
70 | STATIC_SIM_CORE(void) | |
71 | sim_core_trace_M (sim_cpu *cpu, | |
72 | sim_cia cia, | |
73 | int line_nr, | |
74 | transfer_type type, | |
75 | unsigned map, | |
76 | address_word addr, | |
77 | unsigned_M val, | |
78 | int nr_bytes) | |
79 | { | |
80 | const char *transfer = (type == read_transfer ? "read" : "write"); | |
81 | const char *direction = (type == read_transfer ? "->" : "<-"); | |
82 | ||
83 | if (TRACE_DEBUG_P (cpu)) | |
84 | trace_printf (CPU_STATE (cpu), cpu, "sim-n-core.h:%d: ", line_nr); | |
85 | ||
86 | #if (M == 16) | |
87 | trace_printf (CPU_STATE (cpu), cpu, | |
88 | "%s-%d %s:0x%08lx %s 0x%08lx%08lx%08lx%08lx\n", | |
89 | transfer, nr_bytes, | |
90 | map_to_str (map), | |
91 | (unsigned long) addr, | |
92 | direction, | |
93 | (unsigned long) V4_16 (val, 0), | |
94 | (unsigned long) V4_16 (val, 1), | |
95 | (unsigned long) V4_16 (val, 2), | |
96 | (unsigned long) V4_16 (val, 3)); | |
97 | #endif | |
98 | #if (M == 8) | |
99 | trace_printf (CPU_STATE (cpu), cpu, | |
100 | "%s-%d %s:0x%08lx %s 0x%08lx%08lx\n", | |
101 | transfer, nr_bytes, | |
102 | map_to_str (map), | |
103 | (unsigned long) addr, | |
104 | direction, | |
105 | (unsigned long) V4_8 (val, 0), | |
106 | (unsigned long) V4_8 (val, 1)); | |
107 | #endif | |
108 | #if (M == 4) | |
109 | trace_printf (CPU_STATE (cpu), cpu, | |
110 | "%s-%d %s:0x%08lx %s 0x%08lx\n", | |
111 | transfer, | |
112 | nr_bytes, | |
113 | map_to_str (map), | |
114 | (unsigned long) addr, | |
115 | direction, | |
116 | (unsigned long) val); | |
117 | #endif | |
118 | #if (M == 2) | |
119 | trace_printf (CPU_STATE (cpu), cpu, | |
120 | "%s-%d %s:0x%08lx %s 0x%04lx\n", | |
121 | transfer, | |
122 | nr_bytes, | |
123 | map_to_str (map), | |
124 | (unsigned long) addr, | |
125 | direction, | |
126 | (unsigned long) val); | |
127 | #endif | |
128 | #if (M == 1) | |
129 | trace_printf (CPU_STATE (cpu), cpu, | |
130 | "%s-%d %s:0x%08lx %s 0x%02lx\n", | |
131 | transfer, | |
132 | nr_bytes, | |
133 | map_to_str (map), | |
134 | (unsigned long) addr, | |
135 | direction, | |
136 | (unsigned long) val); | |
137 | #endif | |
138 | } | |
139 | #endif | |
140 | ||
141 | ||
142 | /* TAGS: sim_core_read_aligned_1 sim_core_read_aligned_2 */ | |
143 | /* TAGS: sim_core_read_aligned_4 sim_core_read_aligned_8 */ | |
144 | /* TAGS: sim_core_read_aligned_16 */ | |
145 | ||
146 | #if (M == N) | |
147 | INLINE_SIM_CORE(unsigned_M) | |
148 | sim_core_read_aligned_N(sim_cpu *cpu, | |
149 | sim_cia cia, | |
150 | unsigned map, | |
151 | address_word xaddr) | |
152 | { | |
153 | sim_cpu_core *cpu_core = CPU_CORE (cpu); | |
154 | sim_core_common *core = &cpu_core->common; | |
155 | unsigned_M val; | |
156 | sim_core_mapping *mapping; | |
157 | address_word addr; | |
158 | #if WITH_XOR_ENDIAN != 0 | |
159 | if (WITH_XOR_ENDIAN) | |
160 | addr = xaddr ^ cpu_core->xor[(N - 1) % WITH_XOR_ENDIAN]; | |
161 | else | |
162 | #endif | |
163 | addr = xaddr; | |
164 | mapping = sim_core_find_mapping (core, map, addr, N, read_transfer, 1 /*abort*/, cpu, cia); | |
165 | do | |
166 | { | |
167 | #if (WITH_DEVICES) | |
168 | if (WITH_CALLBACK_MEMORY && mapping->device != NULL) | |
169 | { | |
170 | unsigned_M data; | |
7a292a7a | 171 | if (device_io_read_buffer (mapping->device, &data, mapping->space, addr, N, CPU_STATE (cpu), cpu, cia) != N) |
c906108c SS |
172 | device_error (mapping->device, "internal error - %s - io_read_buffer should not fail", |
173 | XSTRING (sim_core_read_aligned_N)); | |
174 | val = T2H_M (data); | |
175 | break; | |
176 | } | |
177 | #endif | |
178 | #if (WITH_HW) | |
179 | if (WITH_CALLBACK_MEMORY && mapping->device != NULL) | |
180 | { | |
181 | unsigned_M data; | |
182 | sim_cpu_hw_io_read_buffer (cpu, cia, mapping->device, &data, mapping->space, addr, N); | |
183 | val = T2H_M (data); | |
184 | break; | |
185 | } | |
186 | #endif | |
187 | val = T2H_M (*(unsigned_M*) sim_core_translate (mapping, addr)); | |
188 | } | |
189 | while (0); | |
190 | PROFILE_COUNT_CORE (cpu, addr, N, map); | |
191 | if (TRACE_P (cpu, TRACE_CORE_IDX)) | |
192 | sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N); | |
193 | return val; | |
194 | } | |
195 | #endif | |
196 | ||
197 | /* TAGS: sim_core_read_unaligned_1 sim_core_read_unaligned_2 */ | |
198 | /* TAGS: sim_core_read_unaligned_4 sim_core_read_unaligned_8 */ | |
199 | /* TAGS: sim_core_read_unaligned_16 */ | |
200 | ||
201 | #if (M == N && N > 1) | |
202 | INLINE_SIM_CORE(unsigned_M) | |
203 | sim_core_read_unaligned_N(sim_cpu *cpu, | |
204 | sim_cia cia, | |
205 | unsigned map, | |
206 | address_word addr) | |
207 | { | |
208 | int alignment = N - 1; | |
209 | /* if hardwired to forced alignment just do it */ | |
210 | if (WITH_ALIGNMENT == FORCED_ALIGNMENT) | |
211 | return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment); | |
212 | else if ((addr & alignment) == 0) | |
213 | return sim_core_read_aligned_N (cpu, cia, map, addr); | |
214 | else | |
215 | switch (CURRENT_ALIGNMENT) | |
216 | { | |
217 | case STRICT_ALIGNMENT: | |
218 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, | |
219 | read_transfer, sim_core_unaligned_signal); | |
220 | case NONSTRICT_ALIGNMENT: | |
221 | { | |
222 | unsigned_M val; | |
223 | if (sim_core_xor_read_buffer (CPU_STATE (cpu), cpu, map, &val, addr, N) != N) | |
224 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, | |
225 | read_transfer, sim_core_unaligned_signal); | |
226 | val = T2H_M(val); | |
227 | PROFILE_COUNT_CORE (cpu, addr, N, map); | |
228 | if (TRACE_P (cpu, TRACE_CORE_IDX)) | |
229 | sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N); | |
230 | return val; | |
231 | } | |
232 | case FORCED_ALIGNMENT: | |
233 | return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment); | |
234 | case MIXED_ALIGNMENT: | |
235 | sim_engine_abort (CPU_STATE (cpu), cpu, cia, | |
236 | "internal error - %s - mixed alignment", | |
237 | XSTRING (sim_core_read_unaligned_N)); | |
238 | default: | |
239 | sim_engine_abort (CPU_STATE (cpu), cpu, cia, | |
240 | "internal error - %s - bad switch", | |
241 | XSTRING (sim_core_read_unaligned_N)); | |
242 | /* to keep some compilers happy, we return a dummy */ | |
243 | return sim_core_dummy_M; | |
244 | } | |
245 | } | |
246 | #endif | |
247 | ||
248 | /* TAGS: sim_core_read_misaligned_3 sim_core_read_misaligned_5 */ | |
249 | /* TAGS: sim_core_read_misaligned_6 sim_core_read_misaligned_7 */ | |
250 | ||
251 | #if (M != N) | |
252 | INLINE_SIM_CORE(unsigned_M) | |
253 | sim_core_read_misaligned_N(sim_cpu *cpu, | |
254 | sim_cia cia, | |
255 | unsigned map, | |
256 | address_word addr) | |
257 | { | |
258 | unsigned_M val = 0; | |
259 | if (sim_core_xor_read_buffer (CPU_STATE (cpu), cpu, map, &val, addr, N) != N) | |
260 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, | |
261 | read_transfer, sim_core_unaligned_signal); | |
262 | if (CURRENT_HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER) | |
263 | val = SWAP_M (val); | |
264 | if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) | |
265 | val >>= (M - N) * 8; | |
266 | PROFILE_COUNT_CORE (cpu, addr, N, map); | |
267 | if (TRACE_P (cpu, TRACE_CORE_IDX)) | |
268 | sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N); | |
269 | return val; | |
270 | } | |
271 | #endif | |
272 | ||
273 | /* TAGS: sim_core_write_aligned_1 sim_core_write_aligned_2 */ | |
274 | /* TAGS: sim_core_write_aligned_4 sim_core_write_aligned_8 */ | |
275 | /* TAGS: sim_core_write_aligned_16 */ | |
276 | ||
277 | #if (M == N) | |
278 | INLINE_SIM_CORE(void) | |
279 | sim_core_write_aligned_N(sim_cpu *cpu, | |
280 | sim_cia cia, | |
281 | unsigned map, | |
282 | address_word xaddr, | |
283 | unsigned_M val) | |
284 | { | |
285 | sim_cpu_core *cpu_core = CPU_CORE (cpu); | |
286 | sim_core_common *core = &cpu_core->common; | |
287 | sim_core_mapping *mapping; | |
288 | address_word addr; | |
289 | #if WITH_XOR_ENDIAN != 0 | |
290 | if (WITH_XOR_ENDIAN) | |
291 | addr = xaddr ^ cpu_core->xor[(N - 1) % WITH_XOR_ENDIAN]; | |
292 | else | |
293 | #endif | |
294 | addr = xaddr; | |
295 | mapping = sim_core_find_mapping (core, map, addr, N, write_transfer, 1 /*abort*/, cpu, cia); | |
296 | do | |
297 | { | |
298 | #if (WITH_DEVICES) | |
299 | if (WITH_CALLBACK_MEMORY && mapping->device != NULL) | |
300 | { | |
301 | unsigned_M data = H2T_M (val); | |
7a292a7a | 302 | if (device_io_write_buffer (mapping->device, &data, mapping->space, addr, N, CPU_STATE (cpu), cpu, cia) != N) |
c906108c SS |
303 | device_error (mapping->device, "internal error - %s - io_write_buffer should not fail", |
304 | XSTRING (sim_core_write_aligned_N)); | |
305 | break; | |
306 | } | |
307 | #endif | |
308 | #if (WITH_HW) | |
309 | if (WITH_CALLBACK_MEMORY && mapping->device != NULL) | |
310 | { | |
311 | unsigned_M data = H2T_M (val); | |
312 | sim_cpu_hw_io_write_buffer (cpu, cia, mapping->device, &data, mapping->space, addr, N); | |
313 | break; | |
314 | } | |
315 | #endif | |
316 | *(unsigned_M*) sim_core_translate (mapping, addr) = H2T_M (val); | |
317 | } | |
318 | while (0); | |
319 | PROFILE_COUNT_CORE (cpu, addr, N, map); | |
320 | if (TRACE_P (cpu, TRACE_CORE_IDX)) | |
321 | sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N); | |
322 | } | |
323 | #endif | |
324 | ||
325 | /* TAGS: sim_core_write_unaligned_1 sim_core_write_unaligned_2 */ | |
326 | /* TAGS: sim_core_write_unaligned_4 sim_core_write_unaligned_8 */ | |
327 | /* TAGS: sim_core_write_unaligned_16 */ | |
328 | ||
329 | #if (M == N && N > 1) | |
330 | INLINE_SIM_CORE(void) | |
331 | sim_core_write_unaligned_N(sim_cpu *cpu, | |
332 | sim_cia cia, | |
333 | unsigned map, | |
334 | address_word addr, | |
335 | unsigned_M val) | |
336 | { | |
337 | int alignment = N - 1; | |
338 | /* if hardwired to forced alignment just do it */ | |
339 | if (WITH_ALIGNMENT == FORCED_ALIGNMENT) | |
340 | sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val); | |
341 | else if ((addr & alignment) == 0) | |
342 | sim_core_write_aligned_N (cpu, cia, map, addr, val); | |
343 | else | |
344 | switch (CURRENT_ALIGNMENT) | |
345 | { | |
346 | case STRICT_ALIGNMENT: | |
347 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, | |
348 | write_transfer, sim_core_unaligned_signal); | |
349 | break; | |
350 | case NONSTRICT_ALIGNMENT: | |
351 | { | |
352 | unsigned_M data = H2T_M (val); | |
353 | if (sim_core_xor_write_buffer (CPU_STATE (cpu), cpu, map, &data, addr, N) != N) | |
354 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, | |
355 | write_transfer, sim_core_unaligned_signal); | |
356 | PROFILE_COUNT_CORE (cpu, addr, N, map); | |
357 | if (TRACE_P (cpu, TRACE_CORE_IDX)) | |
358 | sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N); | |
359 | break; | |
360 | } | |
361 | case FORCED_ALIGNMENT: | |
362 | sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val); | |
363 | break; | |
364 | case MIXED_ALIGNMENT: | |
365 | sim_engine_abort (CPU_STATE (cpu), cpu, cia, | |
366 | "internal error - %s - mixed alignment", | |
367 | XSTRING (sim_core_write_unaligned_N)); | |
368 | break; | |
369 | default: | |
370 | sim_engine_abort (CPU_STATE (cpu), cpu, cia, | |
371 | "internal error - %s - bad switch", | |
372 | XSTRING (sim_core_write_unaligned_N)); | |
373 | break; | |
374 | } | |
375 | } | |
376 | #endif | |
377 | ||
378 | /* TAGS: sim_core_write_misaligned_3 sim_core_write_misaligned_5 */ | |
379 | /* TAGS: sim_core_write_misaligned_6 sim_core_write_misaligned_7 */ | |
380 | ||
381 | #if (M != N) | |
382 | INLINE_SIM_CORE(void) | |
383 | sim_core_write_misaligned_N(sim_cpu *cpu, | |
384 | sim_cia cia, | |
385 | unsigned map, | |
386 | address_word addr, | |
387 | unsigned_M val) | |
388 | { | |
389 | unsigned_M data = val; | |
390 | if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) | |
391 | data <<= (M - N) * 8; | |
392 | if (CURRENT_HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER) | |
393 | data = SWAP_M (data); | |
394 | if (sim_core_xor_write_buffer (CPU_STATE (cpu), cpu, map, &data, addr, N) != N) | |
395 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, | |
396 | write_transfer, sim_core_unaligned_signal); | |
397 | PROFILE_COUNT_CORE (cpu, addr, N, map); | |
398 | if (TRACE_P (cpu, TRACE_CORE_IDX)) | |
399 | sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N); | |
400 | } | |
401 | #endif | |
402 | ||
403 | ||
404 | /* NOTE: see start of file for #define of these macros */ | |
405 | #undef unsigned_M | |
406 | #undef T2H_M | |
407 | #undef H2T_M | |
408 | #undef SWAP_M | |
409 | #undef sim_core_read_aligned_N | |
410 | #undef sim_core_read_unaligned_N | |
411 | #undef sim_core_read_misaligned_N | |
412 | #undef sim_core_write_aligned_N | |
413 | #undef sim_core_write_unaligned_N | |
414 | #undef sim_core_write_misaligned_N | |
415 | #undef sim_core_trace_M | |
416 | #undef sim_core_dummy_M | |
417 | #undef M | |
418 | #undef N |