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[openocd.git] / src / target / armv4_5.c
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
7 * *
8 * Copyright (C) 2008 by Oyvind Harboe *
9 * oyvind.harboe@zylin.com *
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
20 * *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ***************************************************************************/
26 #ifdef HAVE_CONFIG_H
27 #include "config.h"
28 #endif
29
30 #include "armv4_5.h"
31 #include "arm_disassembler.h"
32 #include "binarybuffer.h"
33
34
35 bitfield_desc_t armv4_5_psr_bitfield_desc[] =
36 {
37 {"M[4:0]", 5},
38 {"T", 1},
39 {"F", 1},
40 {"I", 1},
41 {"reserved", 16},
42 {"J", 1},
43 {"reserved", 2},
44 {"Q", 1},
45 {"V", 1},
46 {"C", 1},
47 {"Z", 1},
48 {"N", 1},
49 };
50
51 char* armv4_5_core_reg_list[] =
52 {
53 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13_usr", "lr_usr", "pc",
54
55 "r8_fiq", "r9_fiq", "r10_fiq", "r11_fiq", "r12_fiq", "r13_fiq", "lr_fiq",
56
57 "r13_irq", "lr_irq",
58
59 "r13_svc", "lr_svc",
60
61 "r13_abt", "lr_abt",
62
63 "r13_und", "lr_und",
64
65 "cpsr", "spsr_fiq", "spsr_irq", "spsr_svc", "spsr_abt", "spsr_und"
66 };
67
68 char * armv4_5_mode_strings_list[] =
69 {
70 "Illegal mode value", "User", "FIQ", "IRQ", "Supervisor", "Abort", "Undefined", "System"
71 };
72
73 /* Hack! Yuk! allow -1 index, which simplifies codepaths elsewhere in the code */
74 char** armv4_5_mode_strings = armv4_5_mode_strings_list + 1;
75
76 char* armv4_5_state_strings[] =
77 {
78 "ARM", "Thumb", "Jazelle"
79 };
80
81 int armv4_5_core_reg_arch_type = -1;
82
83 armv4_5_core_reg_t armv4_5_core_reg_list_arch_info[] =
84 {
85 {0, ARMV4_5_MODE_ANY, NULL, NULL},
86 {1, ARMV4_5_MODE_ANY, NULL, NULL},
87 {2, ARMV4_5_MODE_ANY, NULL, NULL},
88 {3, ARMV4_5_MODE_ANY, NULL, NULL},
89 {4, ARMV4_5_MODE_ANY, NULL, NULL},
90 {5, ARMV4_5_MODE_ANY, NULL, NULL},
91 {6, ARMV4_5_MODE_ANY, NULL, NULL},
92 {7, ARMV4_5_MODE_ANY, NULL, NULL},
93 {8, ARMV4_5_MODE_ANY, NULL, NULL},
94 {9, ARMV4_5_MODE_ANY, NULL, NULL},
95 {10, ARMV4_5_MODE_ANY, NULL, NULL},
96 {11, ARMV4_5_MODE_ANY, NULL, NULL},
97 {12, ARMV4_5_MODE_ANY, NULL, NULL},
98 {13, ARMV4_5_MODE_USR, NULL, NULL},
99 {14, ARMV4_5_MODE_USR, NULL, NULL},
100 {15, ARMV4_5_MODE_ANY, NULL, NULL},
101
102 {8, ARMV4_5_MODE_FIQ, NULL, NULL},
103 {9, ARMV4_5_MODE_FIQ, NULL, NULL},
104 {10, ARMV4_5_MODE_FIQ, NULL, NULL},
105 {11, ARMV4_5_MODE_FIQ, NULL, NULL},
106 {12, ARMV4_5_MODE_FIQ, NULL, NULL},
107 {13, ARMV4_5_MODE_FIQ, NULL, NULL},
108 {14, ARMV4_5_MODE_FIQ, NULL, NULL},
109
110 {13, ARMV4_5_MODE_IRQ, NULL, NULL},
111 {14, ARMV4_5_MODE_IRQ, NULL, NULL},
112
113 {13, ARMV4_5_MODE_SVC, NULL, NULL},
114 {14, ARMV4_5_MODE_SVC, NULL, NULL},
115
116 {13, ARMV4_5_MODE_ABT, NULL, NULL},
117 {14, ARMV4_5_MODE_ABT, NULL, NULL},
118
119 {13, ARMV4_5_MODE_UND, NULL, NULL},
120 {14, ARMV4_5_MODE_UND, NULL, NULL},
121
122 {16, ARMV4_5_MODE_ANY, NULL, NULL},
123 {16, ARMV4_5_MODE_FIQ, NULL, NULL},
124 {16, ARMV4_5_MODE_IRQ, NULL, NULL},
125 {16, ARMV4_5_MODE_SVC, NULL, NULL},
126 {16, ARMV4_5_MODE_ABT, NULL, NULL},
127 {16, ARMV4_5_MODE_UND, NULL, NULL}
128 };
129
130 /* map core mode (USR, FIQ, ...) and register number to indizes into the register cache */
131 int armv4_5_core_reg_map[7][17] =
132 {
133 { /* USR */
134 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31
135 },
136 { /* FIQ */
137 0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 15, 32
138 },
139 { /* IRQ */
140 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 23, 24, 15, 33
141 },
142 { /* SVC */
143 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 25, 26, 15, 34
144 },
145 { /* ABT */
146 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 27, 28, 15, 35
147 },
148 { /* UND */
149 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 29, 30, 15, 36
150 },
151 { /* SYS */
152 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31
153 }
154 };
155
156 uint8_t armv4_5_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
157
158 reg_t armv4_5_gdb_dummy_fp_reg =
159 {
160 "GDB dummy floating-point register", armv4_5_gdb_dummy_fp_value, 0, 1, 96, NULL, 0, NULL, 0
161 };
162
163 uint8_t armv4_5_gdb_dummy_fps_value[] = {0, 0, 0, 0};
164
165 reg_t armv4_5_gdb_dummy_fps_reg =
166 {
167 "GDB dummy floating-point status register", armv4_5_gdb_dummy_fps_value, 0, 1, 32, NULL, 0, NULL, 0
168 };
169
170 int armv4_5_get_core_reg(reg_t *reg)
171 {
172 int retval;
173 armv4_5_core_reg_t *armv4_5 = reg->arch_info;
174 target_t *target = armv4_5->target;
175
176 if (target->state != TARGET_HALTED)
177 {
178 LOG_ERROR("Target not halted");
179 return ERROR_TARGET_NOT_HALTED;
180 }
181
182 /* retval = armv4_5->armv4_5_common->full_context(target); */
183 retval = armv4_5->armv4_5_common->read_core_reg(target, armv4_5->num, armv4_5->mode);
184
185 return retval;
186 }
187
188 int armv4_5_set_core_reg(reg_t *reg, uint8_t *buf)
189 {
190 armv4_5_core_reg_t *armv4_5 = reg->arch_info;
191 target_t *target = armv4_5->target;
192 armv4_5_common_t *armv4_5_target = target->arch_info;
193 uint32_t value = buf_get_u32(buf, 0, 32);
194
195 if (target->state != TARGET_HALTED)
196 {
197 return ERROR_TARGET_NOT_HALTED;
198 }
199
200 if (reg == &armv4_5_target->core_cache->reg_list[ARMV4_5_CPSR])
201 {
202 if (value & 0x20)
203 {
204 /* T bit should be set */
205 if (armv4_5_target->core_state == ARMV4_5_STATE_ARM)
206 {
207 /* change state to Thumb */
208 LOG_DEBUG("changing to Thumb state");
209 armv4_5_target->core_state = ARMV4_5_STATE_THUMB;
210 }
211 }
212 else
213 {
214 /* T bit should be cleared */
215 if (armv4_5_target->core_state == ARMV4_5_STATE_THUMB)
216 {
217 /* change state to ARM */
218 LOG_DEBUG("changing to ARM state");
219 armv4_5_target->core_state = ARMV4_5_STATE_ARM;
220 }
221 }
222
223 if (armv4_5_target->core_mode != (enum armv4_5_mode)(value & 0x1f))
224 {
225 LOG_DEBUG("changing ARM core mode to '%s'", armv4_5_mode_strings[armv4_5_mode_to_number(value & 0x1f)]);
226 armv4_5_target->core_mode = value & 0x1f;
227 armv4_5_target->write_core_reg(target, 16, ARMV4_5_MODE_ANY, value);
228 }
229 }
230
231 buf_set_u32(reg->value, 0, 32, value);
232 reg->dirty = 1;
233 reg->valid = 1;
234
235 return ERROR_OK;
236 }
237
238 int armv4_5_invalidate_core_regs(target_t *target)
239 {
240 armv4_5_common_t *armv4_5 = target->arch_info;
241 int i;
242
243 for (i = 0; i < 37; i++)
244 {
245 armv4_5->core_cache->reg_list[i].valid = 0;
246 armv4_5->core_cache->reg_list[i].dirty = 0;
247 }
248
249 return ERROR_OK;
250 }
251
252 reg_cache_t* armv4_5_build_reg_cache(target_t *target, armv4_5_common_t *armv4_5_common)
253 {
254 int num_regs = 37;
255 reg_cache_t *cache = malloc(sizeof(reg_cache_t));
256 reg_t *reg_list = malloc(sizeof(reg_t) * num_regs);
257 armv4_5_core_reg_t *arch_info = malloc(sizeof(armv4_5_core_reg_t) * num_regs);
258 int i;
259
260 cache->name = "arm v4/5 registers";
261 cache->next = NULL;
262 cache->reg_list = reg_list;
263 cache->num_regs = num_regs;
264
265 if (armv4_5_core_reg_arch_type == -1)
266 armv4_5_core_reg_arch_type = register_reg_arch_type(armv4_5_get_core_reg, armv4_5_set_core_reg);
267
268 register_init_dummy(&armv4_5_gdb_dummy_fp_reg);
269 register_init_dummy(&armv4_5_gdb_dummy_fps_reg);
270
271 for (i = 0; i < 37; i++)
272 {
273 arch_info[i] = armv4_5_core_reg_list_arch_info[i];
274 arch_info[i].target = target;
275 arch_info[i].armv4_5_common = armv4_5_common;
276 reg_list[i].name = armv4_5_core_reg_list[i];
277 reg_list[i].size = 32;
278 reg_list[i].value = calloc(1, 4);
279 reg_list[i].dirty = 0;
280 reg_list[i].valid = 0;
281 reg_list[i].bitfield_desc = NULL;
282 reg_list[i].num_bitfields = 0;
283 reg_list[i].arch_type = armv4_5_core_reg_arch_type;
284 reg_list[i].arch_info = &arch_info[i];
285 }
286
287 return cache;
288 }
289
290 int armv4_5_arch_state(struct target_s *target)
291 {
292 armv4_5_common_t *armv4_5 = target->arch_info;
293
294 if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
295 {
296 LOG_ERROR("BUG: called for a non-ARMv4/5 target");
297 exit(-1);
298 }
299
300 LOG_USER("target halted in %s state due to %s, current mode: %s\ncpsr: 0x%8.8" PRIx32 " pc: 0x%8.8" PRIx32 "",
301 armv4_5_state_strings[armv4_5->core_state],
302 Jim_Nvp_value2name_simple(nvp_target_debug_reason, target->debug_reason)->name,
303 armv4_5_mode_strings[armv4_5_mode_to_number(armv4_5->core_mode)],
304 buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
305 buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32));
306
307 return ERROR_OK;
308 }
309
310 int handle_armv4_5_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
311 {
312 char output[128];
313 int output_len;
314 int mode, num;
315 target_t *target = get_current_target(cmd_ctx);
316 armv4_5_common_t *armv4_5 = target->arch_info;
317
318 if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
319 {
320 command_print(cmd_ctx, "current target isn't an ARMV4/5 target");
321 return ERROR_OK;
322 }
323
324 if (target->state != TARGET_HALTED)
325 {
326 command_print(cmd_ctx, "error: target must be halted for register accesses");
327 return ERROR_OK;
328 }
329
330 if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
331 return ERROR_FAIL;
332
333 for (num = 0; num <= 15; num++)
334 {
335 output_len = 0;
336 for (mode = 0; mode < 6; mode++)
337 {
338 if (!ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).valid)
339 {
340 armv4_5->full_context(target);
341 }
342 output_len += snprintf(output + output_len,
343 128 - output_len,
344 "%8s: %8.8" PRIx32 " ",
345 ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).name,
346 buf_get_u32(ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).value, 0, 32));
347 }
348 command_print(cmd_ctx, "%s", output);
349 }
350 command_print(cmd_ctx,
351 " cpsr: %8.8" PRIx32 " spsr_fiq: %8.8" PRIx32 " spsr_irq: %8.8" PRIx32 " spsr_svc: %8.8" PRIx32 " spsr_abt: %8.8" PRIx32 " spsr_und: %8.8" PRIx32 "",
352 buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
353 buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_FIQ].value, 0, 32),
354 buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_IRQ].value, 0, 32),
355 buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_SVC].value, 0, 32),
356 buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_ABT].value, 0, 32),
357 buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_SPSR_UND].value, 0, 32));
358
359 return ERROR_OK;
360 }
361
362 int handle_armv4_5_core_state_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
363 {
364 target_t *target = get_current_target(cmd_ctx);
365 armv4_5_common_t *armv4_5 = target->arch_info;
366
367 if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
368 {
369 command_print(cmd_ctx, "current target isn't an ARMV4/5 target");
370 return ERROR_OK;
371 }
372
373 if (argc > 0)
374 {
375 if (strcmp(args[0], "arm") == 0)
376 {
377 armv4_5->core_state = ARMV4_5_STATE_ARM;
378 }
379 if (strcmp(args[0], "thumb") == 0)
380 {
381 armv4_5->core_state = ARMV4_5_STATE_THUMB;
382 }
383 }
384
385 command_print(cmd_ctx, "core state: %s", armv4_5_state_strings[armv4_5->core_state]);
386
387 return ERROR_OK;
388 }
389
390 static int
391 handle_armv4_5_disassemble_command(struct command_context_s *cmd_ctx,
392 char *cmd, char **args, int argc)
393 {
394 int retval = ERROR_OK;
395 target_t *target = get_current_target(cmd_ctx);
396 armv4_5_common_t *armv4_5 = target->arch_info;
397 uint32_t address;
398 int count = 1;
399 int i;
400 arm_instruction_t cur_instruction;
401 uint32_t opcode;
402 uint16_t thumb_opcode;
403 int thumb = 0;
404
405 if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
406 {
407 command_print(cmd_ctx, "current target isn't an ARMV4/5 target");
408 return ERROR_OK;
409 }
410
411 switch (argc) {
412 case 3:
413 if (strcmp(args[2], "thumb") != 0)
414 goto usage;
415 thumb = 1;
416 /* FALL THROUGH */
417 case 2:
418 count = strtoul(args[1], NULL, 0);
419 /* FALL THROUGH */
420 case 1:
421 address = strtoul(args[0], NULL, 0);
422 if (address & 0x01) {
423 if (!thumb) {
424 command_print(cmd_ctx, "Disassemble as Thumb");
425 thumb = 1;
426 }
427 address &= ~1;
428 }
429 break;
430 default:
431 usage:
432 command_print(cmd_ctx,
433 "usage: armv4_5 disassemble <address> [<count> ['thumb']]");
434 return ERROR_OK;
435 }
436
437 for (i = 0; i < count; i++)
438 {
439 if (thumb)
440 {
441 if ((retval = target_read_u16(target, address, &thumb_opcode)) != ERROR_OK)
442 {
443 return retval;
444 }
445 if ((retval = thumb_evaluate_opcode(thumb_opcode, address, &cur_instruction)) != ERROR_OK)
446 {
447 return retval;
448 }
449 }
450 else {
451 if ((retval = target_read_u32(target, address, &opcode)) != ERROR_OK)
452 {
453 return retval;
454 }
455 if ((retval = arm_evaluate_opcode(opcode, address, &cur_instruction)) != ERROR_OK)
456 {
457 return retval;
458 }
459 }
460 command_print(cmd_ctx, "%s", cur_instruction.text);
461 address += (thumb) ? 2 : 4;
462 }
463
464 return ERROR_OK;
465 }
466
467 int armv4_5_register_commands(struct command_context_s *cmd_ctx)
468 {
469 command_t *armv4_5_cmd;
470
471 armv4_5_cmd = register_command(cmd_ctx, NULL, "armv4_5",
472 NULL, COMMAND_ANY,
473 "armv4/5 specific commands");
474
475 register_command(cmd_ctx, armv4_5_cmd, "reg",
476 handle_armv4_5_reg_command, COMMAND_EXEC,
477 "display ARM core registers");
478 register_command(cmd_ctx, armv4_5_cmd, "core_state",
479 handle_armv4_5_core_state_command, COMMAND_EXEC,
480 "display/change ARM core state <arm | thumb>");
481 register_command(cmd_ctx, armv4_5_cmd, "disassemble",
482 handle_armv4_5_disassemble_command, COMMAND_EXEC,
483 "disassemble instructions <address> [<count> ['thumb']]");
484
485 return ERROR_OK;
486 }
487
488 int armv4_5_get_gdb_reg_list(target_t *target, reg_t **reg_list[], int *reg_list_size)
489 {
490 armv4_5_common_t *armv4_5 = target->arch_info;
491 int i;
492
493 if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
494 return ERROR_FAIL;
495
496 *reg_list_size = 26;
497 *reg_list = malloc(sizeof(reg_t*) * (*reg_list_size));
498
499 for (i = 0; i < 16; i++)
500 {
501 (*reg_list)[i] = &ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, i);
502 }
503
504 for (i = 16; i < 24; i++)
505 {
506 (*reg_list)[i] = &armv4_5_gdb_dummy_fp_reg;
507 }
508
509 (*reg_list)[24] = &armv4_5_gdb_dummy_fps_reg;
510 (*reg_list)[25] = &armv4_5->core_cache->reg_list[ARMV4_5_CPSR];
511
512 return ERROR_OK;
513 }
514
515 /* wait for execution to complete and check exit point */
516 static int armv4_5_run_algorithm_completion(struct target_s *target, uint32_t exit_point, int timeout_ms, void *arch_info)
517 {
518 int retval;
519 armv4_5_common_t *armv4_5 = target->arch_info;
520
521 if ((retval = target_wait_state(target, TARGET_HALTED, timeout_ms)) != ERROR_OK)
522 {
523 return retval;
524 }
525 if (target->state != TARGET_HALTED)
526 {
527 if ((retval = target_halt(target)) != ERROR_OK)
528 return retval;
529 if ((retval = target_wait_state(target, TARGET_HALTED, 500)) != ERROR_OK)
530 {
531 return retval;
532 }
533 return ERROR_TARGET_TIMEOUT;
534 }
535
536 /* fast exit: ARMv5+ code can use BKPT */
537 if (exit_point && buf_get_u32(armv4_5->core_cache->reg_list[15].value,
538 0, 32) != exit_point)
539 {
540 LOG_WARNING("target reentered debug state, but not at the desired exit point: 0x%4.4" PRIx32 "",
541 buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32));
542 return ERROR_TARGET_TIMEOUT;
543 }
544
545 return ERROR_OK;
546 }
547
548 int armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_params, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info, int (*run_it)(struct target_s *target, uint32_t exit_point, int timeout_ms, void *arch_info))
549 {
550 armv4_5_common_t *armv4_5 = target->arch_info;
551 armv4_5_algorithm_t *armv4_5_algorithm_info = arch_info;
552 enum armv4_5_state core_state = armv4_5->core_state;
553 enum armv4_5_mode core_mode = armv4_5->core_mode;
554 uint32_t context[17];
555 uint32_t cpsr;
556 int exit_breakpoint_size = 0;
557 int i;
558 int retval = ERROR_OK;
559 LOG_DEBUG("Running algorithm");
560
561 if (armv4_5_algorithm_info->common_magic != ARMV4_5_COMMON_MAGIC)
562 {
563 LOG_ERROR("current target isn't an ARMV4/5 target");
564 return ERROR_TARGET_INVALID;
565 }
566
567 if (target->state != TARGET_HALTED)
568 {
569 LOG_WARNING("target not halted");
570 return ERROR_TARGET_NOT_HALTED;
571 }
572
573 if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
574 return ERROR_FAIL;
575
576 /* armv5 and later can terminate with BKPT instruction; less overhead */
577 if (!exit_point && armv4_5->is_armv4)
578 {
579 LOG_ERROR("ARMv4 target needs HW breakpoint location");
580 return ERROR_FAIL;
581 }
582
583 for (i = 0; i <= 16; i++)
584 {
585 if (!ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).valid)
586 armv4_5->read_core_reg(target, i, armv4_5_algorithm_info->core_mode);
587 context[i] = buf_get_u32(ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).value, 0, 32);
588 }
589 cpsr = buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32);
590
591 for (i = 0; i < num_mem_params; i++)
592 {
593 if ((retval = target_write_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value)) != ERROR_OK)
594 {
595 return retval;
596 }
597 }
598
599 for (i = 0; i < num_reg_params; i++)
600 {
601 reg_t *reg = register_get_by_name(armv4_5->core_cache, reg_params[i].reg_name, 0);
602 if (!reg)
603 {
604 LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
605 exit(-1);
606 }
607
608 if (reg->size != reg_params[i].size)
609 {
610 LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
611 exit(-1);
612 }
613
614 if ((retval = armv4_5_set_core_reg(reg, reg_params[i].value)) != ERROR_OK)
615 {
616 return retval;
617 }
618 }
619
620 armv4_5->core_state = armv4_5_algorithm_info->core_state;
621 if (armv4_5->core_state == ARMV4_5_STATE_ARM)
622 exit_breakpoint_size = 4;
623 else if (armv4_5->core_state == ARMV4_5_STATE_THUMB)
624 exit_breakpoint_size = 2;
625 else
626 {
627 LOG_ERROR("BUG: can't execute algorithms when not in ARM or Thumb state");
628 exit(-1);
629 }
630
631 if (armv4_5_algorithm_info->core_mode != ARMV4_5_MODE_ANY)
632 {
633 LOG_DEBUG("setting core_mode: 0x%2.2x", armv4_5_algorithm_info->core_mode);
634 buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 5, armv4_5_algorithm_info->core_mode);
635 armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
636 armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
637 }
638
639 /* terminate using a hardware or (ARMv5+) software breakpoint */
640 if (exit_point && (retval = breakpoint_add(target, exit_point,
641 exit_breakpoint_size, BKPT_HARD)) != ERROR_OK)
642 {
643 LOG_ERROR("can't add HW breakpoint to terminate algorithm");
644 return ERROR_TARGET_FAILURE;
645 }
646
647 if ((retval = target_resume(target, 0, entry_point, 1, 1)) != ERROR_OK)
648 {
649 return retval;
650 }
651 int retvaltemp;
652 retval = run_it(target, exit_point, timeout_ms, arch_info);
653
654 if (exit_point)
655 breakpoint_remove(target, exit_point);
656
657 if (retval != ERROR_OK)
658 return retval;
659
660 for (i = 0; i < num_mem_params; i++)
661 {
662 if (mem_params[i].direction != PARAM_OUT)
663 if ((retvaltemp = target_read_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value)) != ERROR_OK)
664 {
665 retval = retvaltemp;
666 }
667 }
668
669 for (i = 0; i < num_reg_params; i++)
670 {
671 if (reg_params[i].direction != PARAM_OUT)
672 {
673
674 reg_t *reg = register_get_by_name(armv4_5->core_cache, reg_params[i].reg_name, 0);
675 if (!reg)
676 {
677 LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
678 exit(-1);
679 }
680
681 if (reg->size != reg_params[i].size)
682 {
683 LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
684 exit(-1);
685 }
686
687 buf_set_u32(reg_params[i].value, 0, 32, buf_get_u32(reg->value, 0, 32));
688 }
689 }
690
691 for (i = 0; i <= 16; i++)
692 {
693 uint32_t regvalue;
694 regvalue = buf_get_u32(ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).value, 0, 32);
695 if (regvalue != context[i])
696 {
697 LOG_DEBUG("restoring register %s with value 0x%8.8" PRIx32 "", ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).name, context[i]);
698 buf_set_u32(ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).value, 0, 32, context[i]);
699 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).valid = 1;
700 ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).dirty = 1;
701 }
702 }
703 buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32, cpsr);
704 armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
705 armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
706
707 armv4_5->core_state = core_state;
708 armv4_5->core_mode = core_mode;
709
710 return retval;
711 }
712
713 int armv4_5_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_params, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info)
714 {
715 return armv4_5_run_algorithm_inner(target, num_mem_params, mem_params, num_reg_params, reg_params, entry_point, exit_point, timeout_ms, arch_info, armv4_5_run_algorithm_completion);
716 }
717
718 int armv4_5_init_arch_info(target_t *target, armv4_5_common_t *armv4_5)
719 {
720 target->arch_info = armv4_5;
721
722 armv4_5->common_magic = ARMV4_5_COMMON_MAGIC;
723 armv4_5->core_state = ARMV4_5_STATE_ARM;
724 armv4_5->core_mode = ARMV4_5_MODE_USR;
725
726 return ERROR_OK;
727 }
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