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armv7m.c
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1 // SPDX-License-Identifier: GPL-2.0-or-later
2 
3 /***************************************************************************
4  * Copyright (C) 2005 by Dominic Rath *
5  * Dominic.Rath@gmx.de *
6  * *
7  * Copyright (C) 2006 by Magnus Lundin *
8  * lundin@mlu.mine.nu *
9  * *
10  * Copyright (C) 2008 by Spencer Oliver *
11  * spen@spen-soft.co.uk *
12  * *
13  * Copyright (C) 2007,2008 Øyvind Harboe *
14  * oyvind.harboe@zylin.com *
15  * *
16  * Copyright (C) 2018 by Liviu Ionescu *
17  * <ilg@livius.net> *
18  * *
19  * Copyright (C) 2019 by Tomas Vanek *
20  * vanekt@fbl.cz *
21  * *
22  * ARMv7-M Architecture, Application Level Reference Manual *
23  * ARM DDI 0405C (September 2008) *
24  * *
25  ***************************************************************************/
26 
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30 
31 #include "breakpoints.h"
32 #include "armv7m.h"
33 #include "algorithm.h"
34 #include "register.h"
35 #include "semihosting_common.h"
36 #include <helper/log.h>
37 #include <helper/binarybuffer.h>
38 
39 #if 0
40 #define _DEBUG_INSTRUCTION_EXECUTION_
41 #endif
42 
43 static const char * const armv7m_exception_strings[] = {
44  "", "Reset", "NMI", "HardFault",
45  "MemManage", "BusFault", "UsageFault", "SecureFault",
46  "RESERVED", "RESERVED", "RESERVED", "SVCall",
47  "DebugMonitor", "RESERVED", "PendSV", "SysTick"
48 };
49 
50 /* PSP is used in some thread modes */
57 };
58 
59 /* MSP is used in handler and some thread modes */
66 };
67 
68 /*
69  * These registers are not memory-mapped. The ARMv7-M profile includes
70  * memory mapped registers too, such as for the NVIC (interrupt controller)
71  * and SysTick (timer) modules; those can mostly be treated as peripherals.
72  *
73  * The ARMv6-M profile is almost identical in this respect, except that it
74  * doesn't include basepri or faultmask registers.
75  */
76 static const struct {
77  unsigned id;
78  const char *name;
79  unsigned bits;
80  enum reg_type type;
81  const char *group;
82  const char *feature;
83 } armv7m_regs[] = {
84  { ARMV7M_R0, "r0", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
85  { ARMV7M_R1, "r1", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
86  { ARMV7M_R2, "r2", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
87  { ARMV7M_R3, "r3", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
88  { ARMV7M_R4, "r4", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
89  { ARMV7M_R5, "r5", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
90  { ARMV7M_R6, "r6", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
91  { ARMV7M_R7, "r7", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
92  { ARMV7M_R8, "r8", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
93  { ARMV7M_R9, "r9", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
94  { ARMV7M_R10, "r10", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
95  { ARMV7M_R11, "r11", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
96  { ARMV7M_R12, "r12", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
97  { ARMV7M_R13, "sp", 32, REG_TYPE_DATA_PTR, "general", "org.gnu.gdb.arm.m-profile" },
98  { ARMV7M_R14, "lr", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
99  { ARMV7M_PC, "pc", 32, REG_TYPE_CODE_PTR, "general", "org.gnu.gdb.arm.m-profile" },
100  { ARMV7M_XPSR, "xPSR", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
101 
102  { ARMV7M_MSP, "msp", 32, REG_TYPE_DATA_PTR, "system", "org.gnu.gdb.arm.m-system" },
103  { ARMV7M_PSP, "psp", 32, REG_TYPE_DATA_PTR, "system", "org.gnu.gdb.arm.m-system" },
104 
105  /* A working register for packing/unpacking special regs, hidden from gdb */
106  { ARMV7M_PMSK_BPRI_FLTMSK_CTRL, "pmsk_bpri_fltmsk_ctrl", 32, REG_TYPE_INT, NULL, NULL },
107 
108  /* WARNING: If you use armv7m_write_core_reg() on one of 4 following
109  * special registers, the new data go to ARMV7M_PMSK_BPRI_FLTMSK_CTRL
110  * cache only and are not flushed to CPU HW register.
111  * To trigger write to CPU HW register, add
112  * armv7m_write_core_reg(,,ARMV7M_PMSK_BPRI_FLTMSK_CTRL,);
113  */
114  { ARMV7M_PRIMASK, "primask", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
115  { ARMV7M_BASEPRI, "basepri", 8, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
116  { ARMV7M_FAULTMASK, "faultmask", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
117  { ARMV7M_CONTROL, "control", 3, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
118 
119  /* ARMv8-M security extension (TrustZone) specific registers */
120  { ARMV8M_MSP_NS, "msp_ns", 32, REG_TYPE_DATA_PTR, "stack", "org.gnu.gdb.arm.secext" },
121  { ARMV8M_PSP_NS, "psp_ns", 32, REG_TYPE_DATA_PTR, "stack", "org.gnu.gdb.arm.secext" },
122  { ARMV8M_MSP_S, "msp_s", 32, REG_TYPE_DATA_PTR, "stack", "org.gnu.gdb.arm.secext" },
123  { ARMV8M_PSP_S, "psp_s", 32, REG_TYPE_DATA_PTR, "stack", "org.gnu.gdb.arm.secext" },
124  { ARMV8M_MSPLIM_S, "msplim_s", 32, REG_TYPE_DATA_PTR, "stack", "org.gnu.gdb.arm.secext" },
125  { ARMV8M_PSPLIM_S, "psplim_s", 32, REG_TYPE_DATA_PTR, "stack", "org.gnu.gdb.arm.secext" },
126  { ARMV8M_MSPLIM_NS, "msplim_ns", 32, REG_TYPE_DATA_PTR, "stack", "org.gnu.gdb.arm.secext" },
127  { ARMV8M_PSPLIM_NS, "psplim_ns", 32, REG_TYPE_DATA_PTR, "stack", "org.gnu.gdb.arm.secext" },
128 
129  { ARMV8M_PMSK_BPRI_FLTMSK_CTRL_S, "pmsk_bpri_fltmsk_ctrl_s", 32, REG_TYPE_INT, NULL, NULL },
130  { ARMV8M_PRIMASK_S, "primask_s", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.secext" },
131  { ARMV8M_BASEPRI_S, "basepri_s", 8, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.secext" },
132  { ARMV8M_FAULTMASK_S, "faultmask_s", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.secext" },
133  { ARMV8M_CONTROL_S, "control_s", 3, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.secext" },
134 
135  { ARMV8M_PMSK_BPRI_FLTMSK_CTRL_NS, "pmsk_bpri_fltmsk_ctrl_ns", 32, REG_TYPE_INT, NULL, NULL },
136  { ARMV8M_PRIMASK_NS, "primask_ns", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.secext" },
137  { ARMV8M_BASEPRI_NS, "basepri_ns", 8, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.secext" },
138  { ARMV8M_FAULTMASK_NS, "faultmask_ns", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.secext" },
139  { ARMV8M_CONTROL_NS, "control_ns", 3, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.secext" },
140 
141  /* FPU registers */
142  { ARMV7M_D0, "d0", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
143  { ARMV7M_D1, "d1", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
144  { ARMV7M_D2, "d2", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
145  { ARMV7M_D3, "d3", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
146  { ARMV7M_D4, "d4", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
147  { ARMV7M_D5, "d5", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
148  { ARMV7M_D6, "d6", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
149  { ARMV7M_D7, "d7", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
150  { ARMV7M_D8, "d8", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
151  { ARMV7M_D9, "d9", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
152  { ARMV7M_D10, "d10", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
153  { ARMV7M_D11, "d11", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
154  { ARMV7M_D12, "d12", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
155  { ARMV7M_D13, "d13", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
156  { ARMV7M_D14, "d14", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
157  { ARMV7M_D15, "d15", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
158 
159  { ARMV7M_FPSCR, "fpscr", 32, REG_TYPE_INT, "float", "org.gnu.gdb.arm.vfp" },
160 };
161 
162 #define ARMV7M_NUM_REGS ARRAY_SIZE(armv7m_regs)
163 
169 {
170  int i;
171  struct armv7m_common *armv7m = target_to_armv7m(target);
172  struct reg_cache *cache = armv7m->arm.core_cache;
173 
174  LOG_DEBUG(" ");
175 
176  if (armv7m->pre_restore_context)
177  armv7m->pre_restore_context(target);
178 
179  /* The descending order of register writes is crucial for correct
180  * packing of ARMV7M_PMSK_BPRI_FLTMSK_CTRL!
181  * See also comments in the register table above */
182  for (i = cache->num_regs - 1; i >= 0; i--) {
183  struct reg *r = &cache->reg_list[i];
184 
185  if (r->exist && r->dirty)
186  armv7m->arm.write_core_reg(target, r, i, ARM_MODE_ANY, r->value);
187  }
188 
189  return ERROR_OK;
190 }
191 
192 /* Core state functions */
193 
202 {
203  static char enamebuf[32];
204 
205  if ((number < 0) | (number > 511))
206  return "Invalid exception";
207  if (number < 16)
209  sprintf(enamebuf, "External Interrupt(%i)", number - 16);
210  return enamebuf;
211 }
212 
213 static int armv7m_get_core_reg(struct reg *reg)
214 {
215  int retval;
216  struct arm_reg *armv7m_reg = reg->arch_info;
217  struct target *target = armv7m_reg->target;
218  struct arm *arm = target_to_arm(target);
219 
220  if (target->state != TARGET_HALTED)
222 
223  retval = arm->read_core_reg(target, reg, reg->number, arm->core_mode);
224 
225  return retval;
226 }
227 
228 static int armv7m_set_core_reg(struct reg *reg, uint8_t *buf)
229 {
230  struct arm_reg *armv7m_reg = reg->arch_info;
231  struct target *target = armv7m_reg->target;
232 
233  if (target->state != TARGET_HALTED)
235 
236  buf_cpy(buf, reg->value, reg->size);
237  reg->dirty = true;
238  reg->valid = true;
239 
240  return ERROR_OK;
241 }
242 
243 uint32_t armv7m_map_id_to_regsel(unsigned int arm_reg_id)
244 {
245  switch (arm_reg_id) {
246  case ARMV7M_R0 ... ARMV7M_R14:
247  case ARMV7M_PC:
248  case ARMV7M_XPSR:
249  case ARMV7M_MSP:
250  case ARMV7M_PSP:
251  /* NOTE: we "know" here that the register identifiers
252  * match the Cortex-M DCRSR.REGSEL selectors values
253  * for R0..R14, PC, xPSR, MSP, and PSP.
254  */
255  return arm_reg_id;
256 
259 
260  case ARMV8M_MSP_NS...ARMV8M_PSPLIM_NS:
261  return arm_reg_id - ARMV8M_MSP_NS + ARMV8M_REGSEL_MSP_NS;
262 
265 
268 
269  case ARMV7M_FPSCR:
270  return ARMV7M_REGSEL_FPSCR;
271 
272  case ARMV7M_D0 ... ARMV7M_D15:
273  return ARMV7M_REGSEL_S0 + 2 * (arm_reg_id - ARMV7M_D0);
274 
275  default:
276  LOG_ERROR("Bad register ID %u", arm_reg_id);
277  return arm_reg_id;
278  }
279 }
280 
281 bool armv7m_map_reg_packing(unsigned int arm_reg_id,
282  unsigned int *reg32_id, uint32_t *offset)
283 {
284 
285  switch (arm_reg_id) {
286 
287  case ARMV7M_PRIMASK...ARMV7M_CONTROL:
288  *reg32_id = ARMV7M_PMSK_BPRI_FLTMSK_CTRL;
289  *offset = arm_reg_id - ARMV7M_PRIMASK;
290  return true;
291  case ARMV8M_PRIMASK_S...ARMV8M_CONTROL_S:
292  *reg32_id = ARMV8M_PMSK_BPRI_FLTMSK_CTRL_S;
293  *offset = arm_reg_id - ARMV8M_PRIMASK_S;
294  return true;
295  case ARMV8M_PRIMASK_NS...ARMV8M_CONTROL_NS:
297  *offset = arm_reg_id - ARMV8M_PRIMASK_NS;
298  return true;
299 
300  default:
301  return false;
302  }
303 
304 }
305 
306 static int armv7m_read_core_reg(struct target *target, struct reg *r,
307  int num, enum arm_mode mode)
308 {
309  uint32_t reg_value;
310  int retval;
311  struct armv7m_common *armv7m = target_to_armv7m(target);
312 
313  assert(num < (int)armv7m->arm.core_cache->num_regs);
314  assert(num == (int)r->number);
315 
316  /* If a code calls read_reg, it expects the cache is no more dirty.
317  * Clear the dirty flag regardless of the later read succeeds or not
318  * to prevent unwanted cache flush after a read error */
319  r->dirty = false;
320 
321  if (r->size <= 8) {
322  /* any 8-bit or shorter register is packed */
323  uint32_t offset;
324  unsigned int reg32_id;
325 
326  bool is_packed = armv7m_map_reg_packing(num, &reg32_id, &offset);
327  if (!is_packed) {
328  /* We should not get here as all 8-bit or shorter registers
329  * are packed */
330  assert(false);
331  /* assert() does nothing if NDEBUG is defined */
332  return ERROR_FAIL;
333  }
334  struct reg *r32 = &armv7m->arm.core_cache->reg_list[reg32_id];
335 
336  /* Read 32-bit container register if not cached */
337  if (!r32->valid) {
338  retval = armv7m_read_core_reg(target, r32, reg32_id, mode);
339  if (retval != ERROR_OK)
340  return retval;
341  }
342 
343  /* Copy required bits of 32-bit container register */
344  buf_cpy(r32->value + offset, r->value, r->size);
345 
346  } else {
347  assert(r->size == 32 || r->size == 64);
348 
349  struct arm_reg *armv7m_core_reg = r->arch_info;
350  uint32_t regsel = armv7m_map_id_to_regsel(armv7m_core_reg->num);
351 
352  retval = armv7m->load_core_reg_u32(target, regsel, &reg_value);
353  if (retval != ERROR_OK)
354  return retval;
355  buf_set_u32(r->value, 0, 32, reg_value);
356 
357  if (r->size == 64) {
358  retval = armv7m->load_core_reg_u32(target, regsel + 1, &reg_value);
359  if (retval != ERROR_OK) {
360  r->valid = false;
361  return retval;
362  }
363  buf_set_u32(r->value + 4, 0, 32, reg_value);
364 
365  uint64_t q = buf_get_u64(r->value, 0, 64);
366  LOG_DEBUG("read %s value 0x%016" PRIx64, r->name, q);
367  } else {
368  LOG_DEBUG("read %s value 0x%08" PRIx32, r->name, reg_value);
369  }
370  }
371 
372  r->valid = true;
373 
374  return ERROR_OK;
375 }
376 
377 static int armv7m_write_core_reg(struct target *target, struct reg *r,
378  int num, enum arm_mode mode, uint8_t *value)
379 {
380  int retval;
381  uint32_t t;
382  struct armv7m_common *armv7m = target_to_armv7m(target);
383 
384  assert(num < (int)armv7m->arm.core_cache->num_regs);
385  assert(num == (int)r->number);
386 
387  if (value != r->value) {
388  /* If we are not flushing the cache, store the new value to the cache */
389  buf_cpy(value, r->value, r->size);
390  }
391 
392  if (r->size <= 8) {
393  /* any 8-bit or shorter register is packed */
394  uint32_t offset;
395  unsigned int reg32_id;
396 
397  bool is_packed = armv7m_map_reg_packing(num, &reg32_id, &offset);
398  if (!is_packed) {
399  /* We should not get here as all 8-bit or shorter registers
400  * are packed */
401  assert(false);
402  /* assert() does nothing if NDEBUG is defined */
403  return ERROR_FAIL;
404  }
405  struct reg *r32 = &armv7m->arm.core_cache->reg_list[reg32_id];
406 
407  if (!r32->valid) {
408  /* Before merging with other parts ensure the 32-bit register is valid */
409  retval = armv7m_read_core_reg(target, r32, reg32_id, mode);
410  if (retval != ERROR_OK)
411  return retval;
412  }
413 
414  /* Write a part to the 32-bit container register */
415  buf_cpy(value, r32->value + offset, r->size);
416  r32->dirty = true;
417 
418  } else {
419  assert(r->size == 32 || r->size == 64);
420 
421  struct arm_reg *armv7m_core_reg = r->arch_info;
422  uint32_t regsel = armv7m_map_id_to_regsel(armv7m_core_reg->num);
423 
424  t = buf_get_u32(value, 0, 32);
425  retval = armv7m->store_core_reg_u32(target, regsel, t);
426  if (retval != ERROR_OK)
427  goto out_error;
428 
429  if (r->size == 64) {
430  t = buf_get_u32(value + 4, 0, 32);
431  retval = armv7m->store_core_reg_u32(target, regsel + 1, t);
432  if (retval != ERROR_OK)
433  goto out_error;
434 
435  uint64_t q = buf_get_u64(value, 0, 64);
436  LOG_DEBUG("write %s value 0x%016" PRIx64, r->name, q);
437  } else {
438  LOG_DEBUG("write %s value 0x%08" PRIx32, r->name, t);
439  }
440  }
441 
442  r->valid = true;
443  r->dirty = false;
444 
445  return ERROR_OK;
446 
447 out_error:
448  r->dirty = true;
449  LOG_ERROR("Error setting register %s", r->name);
450  return retval;
451 }
452 
456 int armv7m_get_gdb_reg_list(struct target *target, struct reg **reg_list[],
457  int *reg_list_size, enum target_register_class reg_class)
458 {
459  struct armv7m_common *armv7m = target_to_armv7m(target);
460  int i, size;
461 
462  if (reg_class == REG_CLASS_ALL)
463  size = armv7m->arm.core_cache->num_regs;
464  else
466 
467  *reg_list = malloc(sizeof(struct reg *) * size);
468  if (!*reg_list)
469  return ERROR_FAIL;
470 
471  for (i = 0; i < size; i++)
472  (*reg_list)[i] = &armv7m->arm.core_cache->reg_list[i];
473 
474  *reg_list_size = size;
475 
476  return ERROR_OK;
477 }
478 
481  int num_mem_params, struct mem_param *mem_params,
482  int num_reg_params, struct reg_param *reg_params,
483  target_addr_t entry_point, target_addr_t exit_point,
484  int timeout_ms, void *arch_info)
485 {
486  int retval;
487 
489  num_mem_params, mem_params,
490  num_reg_params, reg_params,
491  entry_point, exit_point,
492  arch_info);
493 
494  if (retval == ERROR_OK)
495  retval = armv7m_wait_algorithm(target,
496  num_mem_params, mem_params,
497  num_reg_params, reg_params,
498  exit_point, timeout_ms,
499  arch_info);
500 
501  return retval;
502 }
503 
506  int num_mem_params, struct mem_param *mem_params,
507  int num_reg_params, struct reg_param *reg_params,
508  target_addr_t entry_point, target_addr_t exit_point,
509  void *arch_info)
510 {
511  struct armv7m_common *armv7m = target_to_armv7m(target);
512  struct armv7m_algorithm *armv7m_algorithm_info = arch_info;
513  enum arm_mode core_mode = armv7m->arm.core_mode;
514  int retval = ERROR_OK;
515 
516  /* NOTE: armv7m_run_algorithm requires that each algorithm uses a software breakpoint
517  * at the exit point */
518 
519  if (armv7m_algorithm_info->common_magic != ARMV7M_COMMON_MAGIC) {
520  LOG_ERROR("current target isn't an ARMV7M target");
521  return ERROR_TARGET_INVALID;
522  }
523 
524  if (target->state != TARGET_HALTED) {
525  LOG_WARNING("target not halted");
527  }
528 
529  /* Store all non-debug execution registers to armv7m_algorithm_info context */
530  for (unsigned i = 0; i < armv7m->arm.core_cache->num_regs; i++) {
531  struct reg *reg = &armv7m->arm.core_cache->reg_list[i];
532  if (!reg->exist)
533  continue;
534 
535  if (!reg->valid)
537 
538  if (!reg->valid)
539  LOG_TARGET_WARNING(target, "Storing invalid register %s", reg->name);
540 
541  armv7m_algorithm_info->context[i] = buf_get_u32(reg->value, 0, 32);
542  }
543 
544  for (int i = 0; i < num_mem_params; i++) {
545  if (mem_params[i].direction == PARAM_IN)
546  continue;
547  retval = target_write_buffer(target, mem_params[i].address,
548  mem_params[i].size,
549  mem_params[i].value);
550  if (retval != ERROR_OK)
551  return retval;
552  }
553 
554  for (int i = 0; i < num_reg_params; i++) {
555  if (reg_params[i].direction == PARAM_IN)
556  continue;
557 
558  struct reg *reg =
559  register_get_by_name(armv7m->arm.core_cache, reg_params[i].reg_name, false);
560 /* uint32_t regvalue; */
561 
562  if (!reg) {
563  LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
565  }
566 
567  if (reg->size != reg_params[i].size) {
568  LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size",
569  reg_params[i].reg_name);
571  }
572 
573 /* regvalue = buf_get_u32(reg_params[i].value, 0, 32); */
574  armv7m_set_core_reg(reg, reg_params[i].value);
575  }
576 
577  {
578  /*
579  * Ensure xPSR.T is set to avoid trying to run things in arm
580  * (non-thumb) mode, which armv7m does not support.
581  *
582  * We do this by setting the entirety of xPSR, which should
583  * remove all the unknowns about xPSR state.
584  *
585  * Because xPSR.T is populated on reset from the vector table,
586  * it might be 0 if the vector table has "bad" data in it.
587  */
588  struct reg *reg = &armv7m->arm.core_cache->reg_list[ARMV7M_XPSR];
589  buf_set_u32(reg->value, 0, 32, 0x01000000);
590  reg->valid = true;
591  reg->dirty = true;
592  }
593 
594  if (armv7m_algorithm_info->core_mode != ARM_MODE_ANY &&
595  armv7m_algorithm_info->core_mode != core_mode) {
596 
597  /* we cannot set ARM_MODE_HANDLER, so use ARM_MODE_THREAD instead */
598  if (armv7m_algorithm_info->core_mode == ARM_MODE_HANDLER) {
599  armv7m_algorithm_info->core_mode = ARM_MODE_THREAD;
600  LOG_INFO("ARM_MODE_HANDLER not currently supported, using ARM_MODE_THREAD instead");
601  }
602 
603  LOG_DEBUG("setting core_mode: 0x%2.2x", armv7m_algorithm_info->core_mode);
605  0, 1, armv7m_algorithm_info->core_mode);
606  armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].dirty = true;
607  armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].valid = true;
608  }
609 
610  /* save previous core mode */
611  armv7m_algorithm_info->core_mode = core_mode;
612 
613  retval = target_resume(target, 0, entry_point, 1, 1);
614 
615  return retval;
616 }
617 
620  int num_mem_params, struct mem_param *mem_params,
621  int num_reg_params, struct reg_param *reg_params,
622  target_addr_t exit_point, int timeout_ms,
623  void *arch_info)
624 {
625  struct armv7m_common *armv7m = target_to_armv7m(target);
626  struct armv7m_algorithm *armv7m_algorithm_info = arch_info;
627  int retval = ERROR_OK;
628 
629  /* NOTE: armv7m_run_algorithm requires that each algorithm uses a software breakpoint
630  * at the exit point */
631 
632  if (armv7m_algorithm_info->common_magic != ARMV7M_COMMON_MAGIC) {
633  LOG_ERROR("current target isn't an ARMV7M target");
634  return ERROR_TARGET_INVALID;
635  }
636 
637  retval = target_wait_state(target, TARGET_HALTED, timeout_ms);
638  /* If the target fails to halt due to the breakpoint, force a halt */
639  if (retval != ERROR_OK || target->state != TARGET_HALTED) {
640  retval = target_halt(target);
641  if (retval != ERROR_OK)
642  return retval;
643  retval = target_wait_state(target, TARGET_HALTED, 500);
644  if (retval != ERROR_OK)
645  return retval;
646  return ERROR_TARGET_TIMEOUT;
647  }
648 
649  if (exit_point) {
650  /* PC value has been cached in cortex_m_debug_entry() */
651  uint32_t pc = buf_get_u32(armv7m->arm.pc->value, 0, 32);
652  if (pc != exit_point) {
653  LOG_DEBUG("failed algorithm halted at 0x%" PRIx32 ", expected 0x%" TARGET_PRIxADDR,
654  pc, exit_point);
655  return ERROR_TARGET_ALGO_EXIT;
656  }
657  }
658 
659  /* Read memory values to mem_params[] */
660  for (int i = 0; i < num_mem_params; i++) {
661  if (mem_params[i].direction != PARAM_OUT) {
662  retval = target_read_buffer(target, mem_params[i].address,
663  mem_params[i].size,
664  mem_params[i].value);
665  if (retval != ERROR_OK)
666  return retval;
667  }
668  }
669 
670  /* Copy core register values to reg_params[] */
671  for (int i = 0; i < num_reg_params; i++) {
672  if (reg_params[i].direction != PARAM_OUT) {
673  struct reg *reg = register_get_by_name(armv7m->arm.core_cache,
674  reg_params[i].reg_name,
675  false);
676 
677  if (!reg) {
678  LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
680  }
681 
682  if (reg->size != reg_params[i].size) {
683  LOG_ERROR(
684  "BUG: register '%s' size doesn't match reg_params[i].size",
685  reg_params[i].reg_name);
687  }
688 
689  buf_set_u32(reg_params[i].value, 0, 32, buf_get_u32(reg->value, 0, 32));
690  }
691  }
692 
693  for (int i = armv7m->arm.core_cache->num_regs - 1; i >= 0; i--) {
694  struct reg *reg = &armv7m->arm.core_cache->reg_list[i];
695  if (!reg->exist)
696  continue;
697 
698  uint32_t regvalue;
699  regvalue = buf_get_u32(reg->value, 0, 32);
700  if (regvalue != armv7m_algorithm_info->context[i]) {
701  LOG_DEBUG("restoring register %s with value 0x%8.8" PRIx32,
702  reg->name, armv7m_algorithm_info->context[i]);
704  0, 32, armv7m_algorithm_info->context[i]);
705  reg->valid = true;
706  reg->dirty = true;
707  }
708  }
709 
710  /* restore previous core mode */
711  if (armv7m_algorithm_info->core_mode != armv7m->arm.core_mode) {
712  LOG_DEBUG("restoring core_mode: 0x%2.2x", armv7m_algorithm_info->core_mode);
714  0, 1, armv7m_algorithm_info->core_mode);
715  armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].dirty = true;
716  armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].valid = true;
717  }
718 
719  armv7m->arm.core_mode = armv7m_algorithm_info->core_mode;
720 
721  return retval;
722 }
723 
726 {
727  struct armv7m_common *armv7m = target_to_armv7m(target);
728  struct arm *arm = &armv7m->arm;
729  uint32_t ctrl, sp;
730 
731  /* avoid filling log waiting for fileio reply */
733  return ERROR_OK;
734 
737 
738  LOG_USER("[%s] halted due to %s, current mode: %s %s\n"
739  "xPSR: %#8.8" PRIx32 " pc: %#8.8" PRIx32 " %csp: %#8.8" PRIx32 "%s%s",
744  buf_get_u32(arm->cpsr->value, 0, 32),
745  buf_get_u32(arm->pc->value, 0, 32),
746  (ctrl & 0x02) ? 'p' : 'm',
747  sp,
748  (target->semihosting && target->semihosting->is_active) ? ", semihosting" : "",
749  (target->semihosting && target->semihosting->is_fileio) ? " fileio" : "");
750 
751  return ERROR_OK;
752 }
753 
754 static const struct reg_arch_type armv7m_reg_type = {
756  .set = armv7m_set_core_reg,
757 };
758 
761 {
762  struct armv7m_common *armv7m = target_to_armv7m(target);
763  struct arm *arm = &armv7m->arm;
764  int num_regs = ARMV7M_NUM_REGS;
765  struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache);
766  struct reg_cache *cache = malloc(sizeof(struct reg_cache));
767  struct reg *reg_list = calloc(num_regs, sizeof(struct reg));
768  struct arm_reg *arch_info = calloc(num_regs, sizeof(struct arm_reg));
769  struct reg_feature *feature;
770  int i;
771 
772  /* Build the process context cache */
773  cache->name = "arm v7m registers";
774  cache->next = NULL;
775  cache->reg_list = reg_list;
776  cache->num_regs = num_regs;
777  (*cache_p) = cache;
778 
779  for (i = 0; i < num_regs; i++) {
780  arch_info[i].num = armv7m_regs[i].id;
781  arch_info[i].target = target;
782  arch_info[i].arm = arm;
783 
784  reg_list[i].name = armv7m_regs[i].name;
785  reg_list[i].size = armv7m_regs[i].bits;
786  reg_list[i].value = arch_info[i].value;
787  reg_list[i].dirty = false;
788  reg_list[i].valid = false;
789  reg_list[i].hidden = (i == ARMV7M_PMSK_BPRI_FLTMSK_CTRL ||
791  reg_list[i].type = &armv7m_reg_type;
792  reg_list[i].arch_info = &arch_info[i];
793 
794  reg_list[i].group = armv7m_regs[i].group;
795  reg_list[i].number = i;
796  reg_list[i].exist = true;
797  reg_list[i].caller_save = true; /* gdb defaults to true */
798 
799  if (reg_list[i].hidden)
800  continue;
801 
802  feature = calloc(1, sizeof(struct reg_feature));
803  if (feature) {
804  feature->name = armv7m_regs[i].feature;
805  reg_list[i].feature = feature;
806  } else
807  LOG_ERROR("unable to allocate feature list");
808 
809  reg_list[i].reg_data_type = calloc(1, sizeof(struct reg_data_type));
810  if (reg_list[i].reg_data_type)
811  reg_list[i].reg_data_type->type = armv7m_regs[i].type;
812  else
813  LOG_ERROR("unable to allocate reg type list");
814  }
815 
816  arm->cpsr = reg_list + ARMV7M_XPSR;
817  arm->pc = reg_list + ARMV7M_PC;
818  arm->core_cache = cache;
819 
820  return cache;
821 }
822 
824 {
825  struct armv7m_common *armv7m = target_to_armv7m(target);
826  struct arm *arm = &armv7m->arm;
827  struct reg_cache *cache;
828  struct reg *reg;
829  unsigned int i;
830 
831  cache = arm->core_cache;
832 
833  if (!cache)
834  return;
835 
836  for (i = 0; i < cache->num_regs; i++) {
837  reg = &cache->reg_list[i];
838 
839  free(reg->feature);
840  free(reg->reg_data_type);
841  }
842 
843  free(cache->reg_list[0].arch_info);
844  free(cache->reg_list);
845  free(cache);
846 
847  arm->core_cache = NULL;
848 }
849 
850 static int armv7m_setup_semihosting(struct target *target, int enable)
851 {
852  /* nothing todo for armv7m */
853  return ERROR_OK;
854 }
855 
857 int armv7m_init_arch_info(struct target *target, struct armv7m_common *armv7m)
858 {
859  struct arm *arm = &armv7m->arm;
860 
862  armv7m->fp_feature = FP_NONE;
863  armv7m->trace_config.trace_bus_id = 1;
864  /* Enable stimulus port #0 by default */
865  armv7m->trace_config.itm_ter[0] = 1;
866 
869  arm->arch_info = armv7m;
871 
874 
875  return arm_init_arch_info(target, arm);
876 }
877 
880  target_addr_t address, uint32_t count, uint32_t *checksum)
881 {
882  struct working_area *crc_algorithm;
883  struct armv7m_algorithm armv7m_info;
884  struct reg_param reg_params[2];
885  int retval;
886 
887  static const uint8_t cortex_m_crc_code[] = {
888 #include "../../contrib/loaders/checksum/armv7m_crc.inc"
889  };
890 
891  retval = target_alloc_working_area(target, sizeof(cortex_m_crc_code), &crc_algorithm);
892  if (retval != ERROR_OK)
893  return retval;
894 
895  retval = target_write_buffer(target, crc_algorithm->address,
896  sizeof(cortex_m_crc_code), (uint8_t *)cortex_m_crc_code);
897  if (retval != ERROR_OK)
898  goto cleanup;
899 
900  armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
901  armv7m_info.core_mode = ARM_MODE_THREAD;
902 
903  init_reg_param(&reg_params[0], "r0", 32, PARAM_IN_OUT);
904  init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
905 
906  buf_set_u32(reg_params[0].value, 0, 32, address);
907  buf_set_u32(reg_params[1].value, 0, 32, count);
908 
909  int timeout = 20000 * (1 + (count / (1024 * 1024)));
910 
911  retval = target_run_algorithm(target, 0, NULL, 2, reg_params, crc_algorithm->address,
912  crc_algorithm->address + (sizeof(cortex_m_crc_code) - 6),
913  timeout, &armv7m_info);
914 
915  if (retval == ERROR_OK)
916  *checksum = buf_get_u32(reg_params[0].value, 0, 32);
917  else
918  LOG_ERROR("error executing cortex_m crc algorithm");
919 
920  destroy_reg_param(&reg_params[0]);
921  destroy_reg_param(&reg_params[1]);
922 
923 cleanup:
924  target_free_working_area(target, crc_algorithm);
925 
926  return retval;
927 }
928 
931  struct target_memory_check_block *blocks, int num_blocks, uint8_t erased_value)
932 {
933  struct working_area *erase_check_algorithm;
934  struct working_area *erase_check_params;
935  struct reg_param reg_params[2];
936  struct armv7m_algorithm armv7m_info;
937  int retval;
938 
939  static bool timed_out;
940 
941  static const uint8_t erase_check_code[] = {
942 #include "../../contrib/loaders/erase_check/armv7m_erase_check.inc"
943  };
944 
945  const uint32_t code_size = sizeof(erase_check_code);
946 
947  /* make sure we have a working area */
948  if (target_alloc_working_area(target, code_size,
949  &erase_check_algorithm) != ERROR_OK)
951 
952  retval = target_write_buffer(target, erase_check_algorithm->address,
953  code_size, erase_check_code);
954  if (retval != ERROR_OK)
955  goto cleanup1;
956 
957  /* prepare blocks array for algo */
958  struct algo_block {
959  union {
960  uint32_t size;
961  uint32_t result;
962  };
963  uint32_t address;
964  };
965 
966  uint32_t avail = target_get_working_area_avail(target);
967  int blocks_to_check = avail / sizeof(struct algo_block) - 1;
968  if (num_blocks < blocks_to_check)
969  blocks_to_check = num_blocks;
970 
971  struct algo_block *params = malloc((blocks_to_check+1)*sizeof(struct algo_block));
972  if (!params) {
973  retval = ERROR_FAIL;
974  goto cleanup1;
975  }
976 
977  int i;
978  uint32_t total_size = 0;
979  for (i = 0; i < blocks_to_check; i++) {
980  total_size += blocks[i].size;
981  target_buffer_set_u32(target, (uint8_t *)&(params[i].size),
982  blocks[i].size / sizeof(uint32_t));
983  target_buffer_set_u32(target, (uint8_t *)&(params[i].address),
984  blocks[i].address);
985  }
986  target_buffer_set_u32(target, (uint8_t *)&(params[blocks_to_check].size), 0);
987 
988  uint32_t param_size = (blocks_to_check + 1) * sizeof(struct algo_block);
989  if (target_alloc_working_area(target, param_size,
990  &erase_check_params) != ERROR_OK) {
992  goto cleanup2;
993  }
994 
995  retval = target_write_buffer(target, erase_check_params->address,
996  param_size, (uint8_t *)params);
997  if (retval != ERROR_OK)
998  goto cleanup3;
999 
1000  uint32_t erased_word = erased_value | (erased_value << 8)
1001  | (erased_value << 16) | (erased_value << 24);
1002 
1003  LOG_DEBUG("Starting erase check of %d blocks, parameters@"
1004  TARGET_ADDR_FMT, blocks_to_check, erase_check_params->address);
1005 
1006  armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
1007  armv7m_info.core_mode = ARM_MODE_THREAD;
1008 
1009  init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
1010  buf_set_u32(reg_params[0].value, 0, 32, erase_check_params->address);
1011 
1012  init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
1013  buf_set_u32(reg_params[1].value, 0, 32, erased_word);
1014 
1015  /* assume CPU clk at least 1 MHz */
1016  int timeout = (timed_out ? 30000 : 2000) + total_size * 3 / 1000;
1017 
1018  retval = target_run_algorithm(target,
1019  0, NULL,
1020  ARRAY_SIZE(reg_params), reg_params,
1021  erase_check_algorithm->address,
1022  erase_check_algorithm->address + (code_size - 2),
1023  timeout,
1024  &armv7m_info);
1025 
1026  timed_out = retval == ERROR_TARGET_TIMEOUT;
1027  if (retval != ERROR_OK && !timed_out)
1028  goto cleanup4;
1029 
1030  retval = target_read_buffer(target, erase_check_params->address,
1031  param_size, (uint8_t *)params);
1032  if (retval != ERROR_OK)
1033  goto cleanup4;
1034 
1035  for (i = 0; i < blocks_to_check; i++) {
1036  uint32_t result = target_buffer_get_u32(target,
1037  (uint8_t *)&(params[i].result));
1038  if (result != 0 && result != 1)
1039  break;
1040 
1041  blocks[i].result = result;
1042  }
1043  if (i && timed_out)
1044  LOG_INFO("Slow CPU clock: %d blocks checked, %d remain. Continuing...", i, num_blocks-i);
1045 
1046  retval = i; /* return number of blocks really checked */
1047 
1048 cleanup4:
1049  destroy_reg_param(&reg_params[0]);
1050  destroy_reg_param(&reg_params[1]);
1051 
1052 cleanup3:
1053  target_free_working_area(target, erase_check_params);
1054 cleanup2:
1055  free(params);
1056 cleanup1:
1057  target_free_working_area(target, erase_check_algorithm);
1058 
1059  return retval;
1060 }
1061 
1062 int armv7m_maybe_skip_bkpt_inst(struct target *target, bool *inst_found)
1063 {
1064  struct armv7m_common *armv7m = target_to_armv7m(target);
1065  struct reg *r = armv7m->arm.pc;
1066  bool result = false;
1067 
1068 
1069  /* if we halted last time due to a bkpt instruction
1070  * then we have to manually step over it, otherwise
1071  * the core will break again */
1072 
1074  uint16_t op;
1075  uint32_t pc = buf_get_u32(r->value, 0, 32);
1076 
1077  pc &= ~1;
1078  if (target_read_u16(target, pc, &op) == ERROR_OK) {
1079  if ((op & 0xFF00) == 0xBE00) {
1080  pc = buf_get_u32(r->value, 0, 32) + 2;
1081  buf_set_u32(r->value, 0, 32, pc);
1082  r->dirty = true;
1083  r->valid = true;
1084  result = true;
1085  LOG_DEBUG("Skipping over BKPT instruction");
1086  }
1087  }
1088  }
1089 
1090  if (inst_found)
1091  *inst_found = result;
1092 
1093  return ERROR_OK;
1094 }
1095 
1097  {
1098  .name = "arm",
1099  .mode = COMMAND_ANY,
1100  .help = "ARM command group",
1101  .usage = "",
1103  },
1105 };
void init_reg_param(struct reg_param *param, char *reg_name, uint32_t size, enum param_direction direction)
Definition: algorithm.c:29
void destroy_reg_param(struct reg_param *param)
Definition: algorithm.c:37
@ PARAM_OUT
Definition: algorithm.h:16
@ PARAM_IN
Definition: algorithm.h:15
@ PARAM_IN_OUT
Definition: algorithm.h:17
const struct command_registration arm_all_profiles_command_handlers[]
Definition: armv4_5.c:1148
arm_mode
Represent state of an ARM core.
Definition: arm.h:74
@ ARM_MODE_HANDLER
Definition: arm.h:88
@ ARM_MODE_ANY
Definition: arm.h:98
@ ARM_MODE_THREAD
Definition: arm.h:86
@ ARM_STATE_THUMB
Definition: arm.h:144
const char * arm_mode_name(unsigned psr_mode)
Map PSR mode bits to the name of an ARM processor operating mode.
Definition: armv4_5.c:171
static struct arm * target_to_arm(struct target *target)
Convert target handle to generic ARM target state handle.
Definition: arm.h:243
int arm_init_arch_info(struct target *target, struct arm *arm)
Definition: armv4_5.c:1705
@ ARM_CORE_TYPE_M_PROFILE
Definition: arm.h:49
enum arm_mode mode
Definition: armv4_5.c:277
int armv7m_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int *reg_list_size, enum target_register_class reg_class)
Returns generic ARM userspace registers to GDB.
Definition: armv7m.c:456
#define ARMV7M_NUM_REGS
Definition: armv7m.c:162
int armv7m_maybe_skip_bkpt_inst(struct target *target, bool *inst_found)
Definition: armv7m.c:1062
void armv7m_free_reg_cache(struct target *target)
Definition: armv7m.c:823
static int armv7m_setup_semihosting(struct target *target, int enable)
Definition: armv7m.c:850
const int armv7m_psp_reg_map[ARMV7M_NUM_CORE_REGS]
Definition: armv7m.c:51
unsigned id
Definition: armv7m.c:77
uint32_t armv7m_map_id_to_regsel(unsigned int arm_reg_id)
Definition: armv7m.c:243
static int armv7m_write_core_reg(struct target *target, struct reg *r, int num, enum arm_mode mode, uint8_t *value)
Definition: armv7m.c:377
const char * group
Definition: armv7m.c:81
struct reg_cache * armv7m_build_reg_cache(struct target *target)
Builds cache of architecturally defined registers.
Definition: armv7m.c:760
static int armv7m_read_core_reg(struct target *target, struct reg *r, int num, enum arm_mode mode)
Definition: armv7m.c:306
const int armv7m_msp_reg_map[ARMV7M_NUM_CORE_REGS]
Definition: armv7m.c:60
int armv7m_wait_algorithm(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_params, target_addr_t exit_point, int timeout_ms, void *arch_info)
Waits for an algorithm in the target.
Definition: armv7m.c:619
const char * name
Definition: armv7m.c:78
static int armv7m_set_core_reg(struct reg *reg, uint8_t *buf)
Definition: armv7m.c:228
int armv7m_checksum_memory(struct target *target, target_addr_t address, uint32_t count, uint32_t *checksum)
Generates a CRC32 checksum of a memory region.
Definition: armv7m.c:879
bool armv7m_map_reg_packing(unsigned int arm_reg_id, unsigned int *reg32_id, uint32_t *offset)
Definition: armv7m.c:281
static const struct @74 armv7m_regs[]
unsigned bits
Definition: armv7m.c:79
enum reg_type type
Definition: armv7m.c:80
int armv7m_blank_check_memory(struct target *target, struct target_memory_check_block *blocks, int num_blocks, uint8_t erased_value)
Checks an array of memory regions whether they are erased.
Definition: armv7m.c:930
static const char *const armv7m_exception_strings[]
Definition: armv7m.c:43
int armv7m_arch_state(struct target *target)
Logs summary of ARMv7-M state for a halted target.
Definition: armv7m.c:725
int armv7m_restore_context(struct target *target)
Restores target context using the cache of core registers set up by armv7m_build_reg_cache(),...
Definition: armv7m.c:168
const char * armv7m_exception_string(int number)
Maps ISR number (from xPSR) to name.
Definition: armv7m.c:201
static int armv7m_get_core_reg(struct reg *reg)
Definition: armv7m.c:213
int armv7m_start_algorithm(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_params, target_addr_t entry_point, target_addr_t exit_point, void *arch_info)
Starts a Thumb algorithm in the target.
Definition: armv7m.c:505
const char * feature
Definition: armv7m.c:82
int armv7m_run_algorithm(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_params, target_addr_t entry_point, target_addr_t exit_point, int timeout_ms, void *arch_info)
Runs a Thumb algorithm in the target.
Definition: armv7m.c:480
static const struct reg_arch_type armv7m_reg_type
Definition: armv7m.c:754
const struct command_registration armv7m_command_handlers[]
Definition: armv7m.c:1096
int armv7m_init_arch_info(struct target *target, struct armv7m_common *armv7m)
Sets up target as a generic ARMv7-M core.
Definition: armv7m.c:857
@ ARMV8M_REGSEL_PMSK_BPRI_FLTMSK_CTRL_S
Definition: armv7m.h:63
@ ARMV7M_REGSEL_S0
Definition: armv7m.h:68
@ ARMV7M_REGSEL_FPSCR
Definition: armv7m.h:65
@ ARMV8M_REGSEL_MSP_NS
Definition: armv7m.h:53
@ ARMV7M_REGSEL_PMSK_BPRI_FLTMSK_CTRL
Definition: armv7m.h:62
@ ARMV8M_REGSEL_PMSK_BPRI_FLTMSK_CTRL_NS
Definition: armv7m.h:64
@ ARMV7M_PRIMASK
Definition: armv7m.h:144
@ ARMV8M_PRIMASK_S
Definition: armv7m.h:163
@ ARMV7M_R1
Definition: armv7m.h:108
@ ARMV8M_CONTROL_S
Definition: armv7m.h:166
@ ARMV7M_FAULTMASK
Definition: armv7m.h:146
@ ARMV7M_D14
Definition: armv7m.h:193
@ ARMV8M_PRIMASK_NS
Definition: armv7m.h:172
@ ARMV8M_BASEPRI_NS
Definition: armv7m.h:173
@ ARMV8M_MSP_NS
Definition: armv7m.h:151
@ ARMV7M_D8
Definition: armv7m.h:187
@ ARMV8M_MSPLIM_S
Definition: armv7m.h:155
@ ARMV7M_MSP
Definition: armv7m.h:128
@ ARMV8M_PSP_NS
Definition: armv7m.h:152
@ ARMV8M_CONTROL_NS
Definition: armv7m.h:175
@ ARMV7M_R6
Definition: armv7m.h:114
@ ARMV7M_R2
Definition: armv7m.h:109
@ ARMV7M_D3
Definition: armv7m.h:182
@ ARMV7M_D1
Definition: armv7m.h:180
@ ARMV7M_D4
Definition: armv7m.h:183
@ ARMV8M_PMSK_BPRI_FLTMSK_CTRL_NS
Definition: armv7m.h:171
@ ARMV7M_BASEPRI
Definition: armv7m.h:145
@ ARMV7M_D2
Definition: armv7m.h:181
@ ARMV7M_R3
Definition: armv7m.h:110
@ ARMV8M_MSPLIM_NS
Definition: armv7m.h:157
@ ARMV7M_D11
Definition: armv7m.h:190
@ ARMV7M_CONTROL
Definition: armv7m.h:147
@ ARMV7M_D9
Definition: armv7m.h:188
@ ARMV7M_R14
Definition: armv7m.h:124
@ ARMV7M_R9
Definition: armv7m.h:118
@ ARMV7M_D7
Definition: armv7m.h:186
@ ARMV7M_R12
Definition: armv7m.h:122
@ ARMV7M_R0
Definition: armv7m.h:107
@ ARMV8M_PSP_S
Definition: armv7m.h:154
@ ARMV7M_PSP
Definition: armv7m.h:129
@ ARMV8M_MSP_S
Definition: armv7m.h:153
@ ARMV7M_D13
Definition: armv7m.h:192
@ ARMV8M_BASEPRI_S
Definition: armv7m.h:164
@ ARMV7M_R13
Definition: armv7m.h:123
@ ARMV8M_FAULTMASK_S
Definition: armv7m.h:165
@ ARMV7M_PC
Definition: armv7m.h:125
@ ARMV7M_R7
Definition: armv7m.h:115
@ ARMV7M_R4
Definition: armv7m.h:112
@ ARMV7M_XPSR
Definition: armv7m.h:127
@ ARMV7M_D0
Definition: armv7m.h:179
@ ARMV7M_R8
Definition: armv7m.h:117
@ ARMV7M_R11
Definition: armv7m.h:120
@ ARMV8M_PSPLIM_NS
Definition: armv7m.h:158
@ ARMV8M_FAULTMASK_NS
Definition: armv7m.h:174
@ ARMV7M_D12
Definition: armv7m.h:191
@ ARMV7M_D10
Definition: armv7m.h:189
@ ARMV7M_R10
Definition: armv7m.h:119
@ ARMV7M_D15
Definition: armv7m.h:194
@ ARMV7M_FPSCR
Definition: armv7m.h:197
@ ARMV7M_D5
Definition: armv7m.h:184
@ ARMV7M_PMSK_BPRI_FLTMSK_CTRL
Definition: armv7m.h:136
@ ARMV7M_R5
Definition: armv7m.h:113
@ ARMV7M_D6
Definition: armv7m.h:185
@ ARMV8M_PSPLIM_S
Definition: armv7m.h:156
@ ARMV8M_PMSK_BPRI_FLTMSK_CTRL_S
Definition: armv7m.h:162
static struct armv7m_common * target_to_armv7m(struct target *target)
Definition: armv7m.h:260
@ FP_NONE
Definition: armv7m.h:210
#define ARMV7M_NUM_CORE_REGS
Definition: armv7m.h:216
#define ARMV7M_COMMON_MAGIC
Definition: armv7m.h:218
void * buf_cpy(const void *from, void *_to, unsigned size)
Copies size bits out of from and into to.
Definition: binarybuffer.c:43
Support functions to access arbitrary bits in a byte array.
static uint32_t buf_get_u32(const uint8_t *_buffer, unsigned first, unsigned num)
Retrieves num bits from _buffer, starting at the first bit, returning the bits in a 32-bit word.
Definition: binarybuffer.h:98
static void buf_set_u32(uint8_t *_buffer, unsigned first, unsigned num, uint32_t value)
Sets num bits in _buffer, starting at the first bit, using the bits in value.
Definition: binarybuffer.h:30
static uint64_t buf_get_u64(const uint8_t *_buffer, unsigned first, unsigned num)
Retrieves num bits from _buffer, starting at the first bit, returning the bits in a 64-bit word.
Definition: binarybuffer.h:127
#define ERROR_COMMAND_SYNTAX_ERROR
Definition: command.h:385
#define COMMAND_REGISTRATION_DONE
Use this as the last entry in an array of command_registration records.
Definition: command.h:247
@ COMMAND_ANY
Definition: command.h:42
enum esirisc_reg_num number
Definition: esirisc.c:87
static uint16_t direction
Definition: ftdi.c:119
uint64_t op
Definition: lakemont.c:68
#define LOG_USER(expr ...)
Definition: log.h:126
#define LOG_TARGET_WARNING(target, fmt_str,...)
Definition: log.h:146
#define LOG_WARNING(expr ...)
Definition: log.h:120
#define ERROR_FAIL
Definition: log.h:161
#define LOG_ERROR(expr ...)
Definition: log.h:123
#define LOG_INFO(expr ...)
Definition: log.h:117
#define LOG_DEBUG(expr ...)
Definition: log.h:109
#define ERROR_OK
Definition: log.h:155
struct reg * register_get_by_name(struct reg_cache *first, const char *name, bool search_all)
Definition: register.c:50
struct reg_cache ** register_get_last_cache_p(struct reg_cache **first)
Definition: register.c:72
reg_type
Definition: register.h:19
@ REG_TYPE_INT
Definition: register.h:21
@ REG_TYPE_IEEE_DOUBLE
Definition: register.h:37
@ REG_TYPE_CODE_PTR
Definition: register.h:33
@ REG_TYPE_DATA_PTR
Definition: register.h:34
@ REG_TYPE_INT8
Definition: register.h:22
struct target * target
Definition: rtt/rtt.c:26
struct rtt_control ctrl
Control block.
Definition: rtt/rtt.c:25
size_t size
Size of the control block search area.
Definition: rtt/rtt.c:30
Definition: arm.h:262
int num
Definition: arm.h:263
struct arm * arm
Definition: arm.h:266
uint8_t value[16]
Definition: arm.h:267
struct target * target
Definition: arm.h:265
Represents a generic ARM core, with standard application registers.
Definition: arm.h:167
void * arch_info
Definition: arm.h:233
enum arm_core_type core_type
Indicates what registers are in the ARM state core register set.
Definition: arm.h:185
enum arm_mode core_mode
Record the current core mode: SVC, USR, or some other mode.
Definition: arm.h:188
struct reg * cpsr
Handle to the CPSR/xPSR; valid in all core modes.
Definition: arm.h:176
struct reg * pc
Handle to the PC; valid in all core modes.
Definition: arm.h:173
int(* write_core_reg)(struct target *target, struct reg *reg, int num, enum arm_mode mode, uint8_t *value)
Definition: arm.h:218
int(* setup_semihosting)(struct target *target, int enable)
Definition: arm.h:199
int(* read_core_reg)(struct target *target, struct reg *reg, int num, enum arm_mode mode)
Retrieve a single core register.
Definition: arm.h:216
struct reg_cache * core_cache
Definition: arm.h:170
enum arm_state core_state
Record the current core state: ARM, Thumb, or otherwise.
Definition: arm.h:191
unsigned int common_magic
Definition: armv7m.h:293
enum arm_mode core_mode
Definition: armv7m.h:295
uint32_t context[ARMV7M_LAST_REG]
Definition: armv7m.h:297
struct armv7m_trace_config trace_config
Definition: armv7m.h:236
int exception_number
Definition: armv7m.h:225
int fp_feature
Definition: armv7m.h:230
void(* pre_restore_context)(struct target *target)
Definition: armv7m.h:245
struct arm arm
Definition: armv7m.h:223
unsigned int common_magic
Definition: armv7m.h:221
int(* store_core_reg_u32)(struct target *target, uint32_t regsel, uint32_t value)
Definition: armv7m.h:240
int(* load_core_reg_u32)(struct target *target, uint32_t regsel, uint32_t *value)
Definition: armv7m.h:239
uint32_t itm_ter[8]
Bitmask of currently enabled ITM stimuli.
Definition: armv7m_trace.h:27
unsigned int trace_bus_id
Identifier for multi-source trace stream formatting.
Definition: armv7m_trace.h:29
const char * name
Definition: command.h:229
int(* get)(struct reg *reg)
Definition: register.h:152
const char * name
Definition: register.h:145
unsigned num_regs
Definition: register.h:148
struct reg * reg_list
Definition: register.h:147
struct reg_cache * next
Definition: register.h:146
enum reg_type type
Definition: register.h:100
uint32_t size
Definition: algorithm.h:29
uint8_t * value
Definition: algorithm.h:30
const char * reg_name
Definition: algorithm.h:28
Definition: register.h:111
bool caller_save
Definition: register.h:119
bool valid
Definition: register.h:126
bool exist
Definition: register.h:128
uint32_t size
Definition: register.h:132
const char * group
Definition: register.h:138
uint8_t * value
Definition: register.h:122
struct reg_feature * feature
Definition: register.h:117
struct reg_data_type * reg_data_type
Definition: register.h:135
uint32_t number
Definition: register.h:115
bool hidden
Definition: register.h:130
void * arch_info
Definition: register.h:140
bool dirty
Definition: register.h:124
const struct reg_arch_type * type
Definition: register.h:141
const char * name
Definition: register.h:113
bool hit_fileio
A flag reporting whether semihosting fileio operation is active.
bool is_fileio
A flag reporting whether semihosting fileio is active.
bool is_active
A flag reporting whether semihosting is active.
Definition: target.h:120
struct semihosting * semihosting
Definition: target.h:210
enum target_debug_reason debug_reason
Definition: target.h:159
enum target_state state
Definition: target.h:162
struct reg_cache * reg_cache
Definition: target.h:163
Definition: psoc6.c:84
target_addr_t address
Definition: target.h:90
int target_halt(struct target *target)
Definition: target.c:585
void target_buffer_set_u32(struct target *target, uint8_t *buffer, uint32_t value)
Definition: target.c:411
int target_write_buffer(struct target *target, target_addr_t address, uint32_t size, const uint8_t *buffer)
Definition: target.c:2408
int target_read_buffer(struct target *target, target_addr_t address, uint32_t size, uint8_t *buffer)
Definition: target.c:2473
uint32_t target_get_working_area_avail(struct target *target)
Definition: target.c:2233
int target_alloc_working_area(struct target *target, uint32_t size, struct working_area **area)
Definition: target.c:2129
int target_free_working_area(struct target *target, struct working_area *area)
Free a working area.
Definition: target.c:2187
int target_run_algorithm(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_param, target_addr_t entry_point, target_addr_t exit_point, int timeout_ms, void *arch_info)
Downloads a target-specific native code algorithm to the target, and executes it.
Definition: target.c:846
int target_read_u16(struct target *target, target_addr_t address, uint16_t *value)
Definition: target.c:2640
uint32_t target_buffer_get_u32(struct target *target, const uint8_t *buffer)
Definition: target.c:375
const char * debug_reason_name(struct target *t)
Definition: target.c:289
int target_resume(struct target *target, int current, target_addr_t address, int handle_breakpoints, int debug_execution)
Make the target (re)start executing using its saved execution context (possibly with some modificatio...
Definition: target.c:634
int target_wait_state(struct target *target, enum target_state state, int ms)
Definition: target.c:3270
@ DBG_REASON_BREAKPOINT
Definition: target.h:74
target_register_class
Definition: target.h:114
@ REG_CLASS_ALL
Definition: target.h:115
#define ERROR_TARGET_NOT_HALTED
Definition: target.h:792
#define ERROR_TARGET_INVALID
Definition: target.h:789
@ TARGET_HALTED
Definition: target.h:55
static const char * target_name(struct target *target)
Returns the instance-specific name of the specified target.
Definition: target.h:234
#define ERROR_TARGET_TIMEOUT
Definition: target.h:791
#define ERROR_TARGET_RESOURCE_NOT_AVAILABLE
Definition: target.h:796
#define ERROR_TARGET_ALGO_EXIT
Definition: target.h:801
#define TARGET_ADDR_FMT
Definition: types.h:342
#define ARRAY_SIZE(x)
Compute the number of elements of a variable length array.
Definition: types.h:57
uint64_t target_addr_t
Definition: types.h:335
#define TARGET_PRIxADDR
Definition: types.h:340
#define NULL
Definition: usb.h:16
uint8_t offset[4]
Definition: vdebug.c:9
uint8_t count[4]
Definition: vdebug.c:22