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mips64.c
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1 // SPDX-License-Identifier: GPL-2.0-or-later
2 
3 /*
4  * Support for processors implementing MIPS64 instruction set
5  *
6  * Copyright (C) 2014 by Andrey Sidorov <anysidorov@gmail.com>
7  * Copyright (C) 2014 by Aleksey Kuleshov <rndfax@yandex.ru>
8  * Copyright (C) 2014 by Antony Pavlov <antonynpavlov@gmail.com>
9  * Copyright (C) 2014 by Peter Mamonov <pmamonov@gmail.com>
10  *
11  * Based on the work of:
12  * Copyright (C) 2008 by Spencer Oliver
13  * Copyright (C) 2008 by David T.L. Wong
14  * Copyright (C) 2010 by Konstantin Kostyukhin, Nikolay Shmyrev
15  */
16 
17 #ifdef HAVE_CONFIG_H
18 #include "config.h"
19 #endif
20 
21 #include "mips64.h"
22 
23 static const struct {
24  unsigned id;
25  const char *name;
26  enum reg_type type;
27  const char *group;
28  const char *feature;
29  int flag;
30 } mips64_regs[] = {
31  { 0, "r0", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
32  { 1, "r1", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
33  { 2, "r2", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
34  { 3, "r3", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
35  { 4, "r4", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
36  { 5, "r5", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
37  { 6, "r6", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
38  { 7, "r7", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
39  { 8, "r8", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
40  { 9, "r9", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
41  { 10, "r10", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
42  { 11, "r11", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
43  { 12, "r12", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
44  { 13, "r13", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
45  { 14, "r14", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
46  { 15, "r15", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
47  { 16, "r16", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
48  { 17, "r17", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
49  { 18, "r18", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
50  { 19, "r19", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
51  { 20, "r20", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
52  { 21, "r21", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
53  { 22, "r22", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
54  { 23, "r23", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
55  { 24, "r24", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
56  { 25, "r25", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
57  { 26, "r26", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
58  { 27, "r27", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
59  { 28, "r28", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
60  { 29, "r29", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
61  { 30, "r30", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
62  { 31, "r31", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
63  { 32, "lo", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
64  { 33, "hi", REG_TYPE_UINT64, NULL, "org.gnu.gdb.mips.cpu", 0 },
65  { MIPS64_NUM_CORE_REGS + 0, "pc", REG_TYPE_UINT64, NULL,
66  "org.gnu.gdb.mips.cpu", 0 },
67  { MIPS64_NUM_CORE_REGS + 1, "Random", REG_TYPE_UINT32, NULL,
68  "org.gnu.gdb.mips.cp0", 0 },
69  { MIPS64_NUM_CORE_REGS + 2, "Entrylo_0", REG_TYPE_UINT64, NULL,
70  "org.gnu.gdb.mips.cp0", 0 },
71  { MIPS64_NUM_CORE_REGS + 3, "Entrylo_1", REG_TYPE_UINT64, NULL,
72  "org.gnu.gdb.mips.cp0", 0 },
73  { MIPS64_NUM_CORE_REGS + 4, "Context", REG_TYPE_UINT64, NULL,
74  "org.gnu.gdb.mips.cp0", 0 },
75  { MIPS64_NUM_CORE_REGS + 5, "Pagemask", REG_TYPE_UINT32, NULL,
76  "org.gnu.gdb.mips.cp0", 0 },
77  { MIPS64_NUM_CORE_REGS + 6, "Wired", REG_TYPE_UINT32, NULL,
78  "org.gnu.gdb.mips.cp0", 0 },
79  { MIPS64_NUM_CORE_REGS + 7, "badvaddr", REG_TYPE_UINT64, NULL,
80  "org.gnu.gdb.mips.cp0", 0 },
81  { MIPS64_NUM_CORE_REGS + 8, "Count", REG_TYPE_UINT32, NULL,
82  "org.gnu.gdb.mips.cp0", 0 },
83  { MIPS64_NUM_CORE_REGS + 9, "EntryHi", REG_TYPE_UINT64, NULL,
84  "org.gnu.gdb.mips.cp0", 0 },
85  { MIPS64_NUM_CORE_REGS + 10, "Compare", REG_TYPE_UINT32, NULL,
86  "org.gnu.gdb.mips.cp0", 0 },
87  { MIPS64_NUM_CORE_REGS + 11, "status", REG_TYPE_UINT32, NULL,
88  "org.gnu.gdb.mips.cp0", 0 },
89  { MIPS64_NUM_CORE_REGS + 12, "cause", REG_TYPE_UINT32, NULL,
90  "org.gnu.gdb.mips.cp0", 0 },
91  { MIPS64_NUM_CORE_REGS + 13, "EPC", REG_TYPE_UINT64, NULL,
92  "org.gnu.gdb.mips.cp0", 0 },
93  { MIPS64_NUM_CORE_REGS + 14, "PrID", REG_TYPE_UINT32, NULL,
94  "org.gnu.gdb.mips.cp0", 0 },
95  { MIPS64_NUM_CORE_REGS + 15, "Config", REG_TYPE_UINT32, NULL,
96  "org.gnu.gdb.mips.cp0", 0 },
97  { MIPS64_NUM_CORE_REGS + 16, "LLA", REG_TYPE_UINT32, NULL,
98  "org.gnu.gdb.mips.cp0", 0 },
99  { MIPS64_NUM_CORE_REGS + 17, "WatchLo0", REG_TYPE_UINT64, NULL,
100  "org.gnu.gdb.mips.cp0", 0 },
101  { MIPS64_NUM_CORE_REGS + 18, "WatchLo1", REG_TYPE_UINT64, NULL,
102  "org.gnu.gdb.mips.cp0", 0 },
103  { MIPS64_NUM_CORE_REGS + 19, "WatchHi0", REG_TYPE_UINT32, NULL,
104  "org.gnu.gdb.mips.cp0", 0 },
105  { MIPS64_NUM_CORE_REGS + 20, "WatchHi1", REG_TYPE_UINT32, NULL,
106  "org.gnu.gdb.mips.cp0", 0 },
107  { MIPS64_NUM_CORE_REGS + 21, "Xcontext", REG_TYPE_UINT64, NULL,
108  "org.gnu.gdb.mips.cp0", 0 },
109  { MIPS64_NUM_CORE_REGS + 22, "ChipMemCtrl", REG_TYPE_UINT32, NULL,
110  "org.gnu.gdb.mips.cp0", 0 },
111  { MIPS64_NUM_CORE_REGS + 23, "Debug", REG_TYPE_UINT32, NULL,
112  "org.gnu.gdb.mips.cp0", 0 },
113  { MIPS64_NUM_CORE_REGS + 24, "Perfcount, sel=0", REG_TYPE_UINT32, NULL,
114  "org.gnu.gdb.mips.cp0", 0 },
115  { MIPS64_NUM_CORE_REGS + 25, "Perfcount, sel=1", REG_TYPE_UINT64, NULL,
116  "org.gnu.gdb.mips.cp0", 0 },
117  { MIPS64_NUM_CORE_REGS + 26, "Perfcount, sel=2", REG_TYPE_UINT32, NULL,
118  "org.gnu.gdb.mips.cp0", 0 },
119  { MIPS64_NUM_CORE_REGS + 27, "Perfcount, sel=3", REG_TYPE_UINT64, NULL,
120  "org.gnu.gdb.mips.cp0", 0 },
121  { MIPS64_NUM_CORE_REGS + 28, "ECC", REG_TYPE_UINT32, NULL,
122  "org.gnu.gdb.mips.cp0", 0 },
123  { MIPS64_NUM_CORE_REGS + 29, "CacheErr", REG_TYPE_UINT32, NULL,
124  "org.gnu.gdb.mips.cp0", 0 },
125  { MIPS64_NUM_CORE_REGS + 30, "TagLo", REG_TYPE_UINT32, NULL,
126  "org.gnu.gdb.mips.cp0", 0 },
127  { MIPS64_NUM_CORE_REGS + 31, "TagHi", REG_TYPE_UINT32, NULL,
128  "org.gnu.gdb.mips.cp0", 0 },
129  { MIPS64_NUM_CORE_REGS + 32, "DataHi", REG_TYPE_UINT64, NULL,
130  "org.gnu.gdb.mips.cp0", 0 },
131  { MIPS64_NUM_CORE_REGS + 33, "EEPC", REG_TYPE_UINT64, NULL,
132  "org.gnu.gdb.mips.cp0", 0 },
133  { MIPS64_NUM_CORE_C0_REGS + 0, "f0", REG_TYPE_IEEE_DOUBLE, NULL,
134  "org.gnu.gdb.mips.fpu", 0 },
135  { MIPS64_NUM_CORE_C0_REGS + 1, "f1", REG_TYPE_IEEE_DOUBLE, NULL,
136  "org.gnu.gdb.mips.fpu", 0 },
137  { MIPS64_NUM_CORE_C0_REGS + 2, "f2", REG_TYPE_IEEE_DOUBLE, NULL,
138  "org.gnu.gdb.mips.fpu", 0 },
139  { MIPS64_NUM_CORE_C0_REGS + 3, "f3", REG_TYPE_IEEE_DOUBLE, NULL,
140  "org.gnu.gdb.mips.fpu", 0 },
141  { MIPS64_NUM_CORE_C0_REGS + 4, "f4", REG_TYPE_IEEE_DOUBLE, NULL,
142  "org.gnu.gdb.mips.fpu", 0 },
143  { MIPS64_NUM_CORE_C0_REGS + 5, "f5", REG_TYPE_IEEE_DOUBLE, NULL,
144  "org.gnu.gdb.mips.fpu", 0 },
145  { MIPS64_NUM_CORE_C0_REGS + 6, "f6", REG_TYPE_IEEE_DOUBLE, NULL,
146  "org.gnu.gdb.mips.fpu", 0 },
147  { MIPS64_NUM_CORE_C0_REGS + 7, "f7", REG_TYPE_IEEE_DOUBLE, NULL,
148  "org.gnu.gdb.mips.fpu", 0 },
149  { MIPS64_NUM_CORE_C0_REGS + 8, "f8", REG_TYPE_IEEE_DOUBLE, NULL,
150  "org.gnu.gdb.mips.fpu", 0 },
151  { MIPS64_NUM_CORE_C0_REGS + 9, "f9", REG_TYPE_IEEE_DOUBLE, NULL,
152  "org.gnu.gdb.mips.fpu", 0 },
153  { MIPS64_NUM_CORE_C0_REGS + 10, "f10", REG_TYPE_IEEE_DOUBLE, NULL,
154  "org.gnu.gdb.mips.fpu", 0 },
155  { MIPS64_NUM_CORE_C0_REGS + 11, "f11", REG_TYPE_IEEE_DOUBLE, NULL,
156  "org.gnu.gdb.mips.fpu", 0 },
157  { MIPS64_NUM_CORE_C0_REGS + 12, "f12", REG_TYPE_IEEE_DOUBLE, NULL,
158  "org.gnu.gdb.mips.fpu", 0 },
159  { MIPS64_NUM_CORE_C0_REGS + 13, "f13", REG_TYPE_IEEE_DOUBLE, NULL,
160  "org.gnu.gdb.mips.fpu", 0 },
161  { MIPS64_NUM_CORE_C0_REGS + 14, "f14", REG_TYPE_IEEE_DOUBLE, NULL,
162  "org.gnu.gdb.mips.fpu", 0 },
163  { MIPS64_NUM_CORE_C0_REGS + 15, "f15", REG_TYPE_IEEE_DOUBLE, NULL,
164  "org.gnu.gdb.mips.fpu", 0 },
165  { MIPS64_NUM_CORE_C0_REGS + 16, "f16", REG_TYPE_IEEE_DOUBLE, NULL,
166  "org.gnu.gdb.mips.fpu", 0 },
167  { MIPS64_NUM_CORE_C0_REGS + 17, "f17", REG_TYPE_IEEE_DOUBLE, NULL,
168  "org.gnu.gdb.mips.fpu", 0 },
169  { MIPS64_NUM_CORE_C0_REGS + 18, "f18", REG_TYPE_IEEE_DOUBLE, NULL,
170  "org.gnu.gdb.mips.fpu", 0 },
171  { MIPS64_NUM_CORE_C0_REGS + 19, "f19", REG_TYPE_IEEE_DOUBLE, NULL,
172  "org.gnu.gdb.mips.fpu", 0 },
173  { MIPS64_NUM_CORE_C0_REGS + 20, "f20", REG_TYPE_IEEE_DOUBLE, NULL,
174  "org.gnu.gdb.mips.fpu", 0 },
175  { MIPS64_NUM_CORE_C0_REGS + 21, "f21", REG_TYPE_IEEE_DOUBLE, NULL,
176  "org.gnu.gdb.mips.fpu", 0 },
177  { MIPS64_NUM_CORE_C0_REGS + 22, "f22", REG_TYPE_IEEE_DOUBLE, NULL,
178  "org.gnu.gdb.mips.fpu", 0 },
179  { MIPS64_NUM_CORE_C0_REGS + 23, "f23", REG_TYPE_IEEE_DOUBLE, NULL,
180  "org.gnu.gdb.mips.fpu", 0 },
181  { MIPS64_NUM_CORE_C0_REGS + 24, "f24", REG_TYPE_IEEE_DOUBLE, NULL,
182  "org.gnu.gdb.mips.fpu", 0 },
183  { MIPS64_NUM_CORE_C0_REGS + 25, "f25", REG_TYPE_IEEE_DOUBLE, NULL,
184  "org.gnu.gdb.mips.fpu", 0 },
185  { MIPS64_NUM_CORE_C0_REGS + 26, "f26", REG_TYPE_IEEE_DOUBLE, NULL,
186  "org.gnu.gdb.mips.fpu", 0 },
187  { MIPS64_NUM_CORE_C0_REGS + 27, "f27", REG_TYPE_IEEE_DOUBLE, NULL,
188  "org.gnu.gdb.mips.fpu", 0 },
189  { MIPS64_NUM_CORE_C0_REGS + 28, "f28", REG_TYPE_IEEE_DOUBLE, NULL,
190  "org.gnu.gdb.mips.fpu", 0 },
191  { MIPS64_NUM_CORE_C0_REGS + 29, "f29", REG_TYPE_IEEE_DOUBLE, NULL,
192  "org.gnu.gdb.mips.fpu", 0 },
193  { MIPS64_NUM_CORE_C0_REGS + 30, "f30", REG_TYPE_IEEE_DOUBLE, NULL,
194  "org.gnu.gdb.mips.fpu", 0 },
195  { MIPS64_NUM_CORE_C0_REGS + 31, "f31", REG_TYPE_IEEE_DOUBLE, NULL,
196  "org.gnu.gdb.mips.fpu", 0 },
197  { MIPS64_NUM_CORE_C0_REGS + 32, "fcsr", REG_TYPE_INT, "float",
198  "org.gnu.gdb.mips.fpu", 0 },
199  { MIPS64_NUM_CORE_C0_REGS + 33, "fir", REG_TYPE_INT, "float",
200  "org.gnu.gdb.mips.fpu", 0 },
201  { MIPS64_NUM_CORE_C0_REGS + 34, "fconfig", REG_TYPE_INT, "float",
202  "org.gnu.gdb.mips.fpu", 0 },
203  { MIPS64_NUM_CORE_C0_REGS + 35, "fccr", REG_TYPE_INT, "float",
204  "org.gnu.gdb.mips.fpu", 0 },
205  { MIPS64_NUM_CORE_C0_REGS + 36, "fexr", REG_TYPE_INT, "float",
206  "org.gnu.gdb.mips.fpu", 0 },
207  { MIPS64_NUM_CORE_C0_REGS + 37, "fenr", REG_TYPE_INT, "float",
208  "org.gnu.gdb.mips.fpu", 0 },
209 };
210 
211 static int reg_type2size(enum reg_type type)
212 {
213  switch (type) {
214  case REG_TYPE_UINT32:
215  case REG_TYPE_INT:
216  return 32;
217  case REG_TYPE_UINT64:
218  case REG_TYPE_IEEE_DOUBLE:
219  return 64;
220  default:
221  return 64;
222  }
223 }
224 
225 static int mips64_get_core_reg(struct reg *reg)
226 {
227  int retval;
228  struct mips64_core_reg *mips64_reg = reg->arch_info;
229  struct target *target = mips64_reg->target;
230  struct mips64_common *mips64_target = target->arch_info;
231 
232  if (target->state != TARGET_HALTED)
233  return ERROR_TARGET_NOT_HALTED;
234 
235  retval = mips64_target->read_core_reg(target, mips64_reg->num);
236 
237  return retval;
238 }
239 
240 static int mips64_set_core_reg(struct reg *reg, uint8_t *buf)
241 {
242  struct mips64_core_reg *mips64_reg = reg->arch_info;
243  struct target *target = mips64_reg->target;
244  uint64_t value = buf_get_u64(buf, 0, 64);
245 
246  if (target->state != TARGET_HALTED)
247  return ERROR_TARGET_NOT_HALTED;
248 
249  buf_set_u64(reg->value, 0, 64, value);
250  reg->dirty = 1;
251  reg->valid = 1;
252 
253  return ERROR_OK;
254 }
255 
256 static int mips64_read_core_reg(struct target *target, int num)
257 {
258  uint64_t reg_value;
259 
260  /* get pointers to arch-specific information */
261  struct mips64_common *mips64 = target->arch_info;
262 
263  if ((num < 0) || (num >= MIPS64_NUM_REGS))
264  return ERROR_COMMAND_ARGUMENT_INVALID;
265 
266  reg_value = mips64->core_regs[num];
267  buf_set_u64(mips64->core_cache->reg_list[num].value, 0, 64, reg_value);
268  mips64->core_cache->reg_list[num].valid = 1;
269  mips64->core_cache->reg_list[num].dirty = 0;
270 
271  return ERROR_OK;
272 }
273 
274 static int mips64_write_core_reg(struct target *target, int num)
275 {
276  uint64_t reg_value;
277 
278  /* get pointers to arch-specific information */
279  struct mips64_common *mips64 = target->arch_info;
280 
281  if ((num < 0) || (num >= MIPS64_NUM_REGS))
282  return ERROR_COMMAND_ARGUMENT_INVALID;
283 
284  reg_value = buf_get_u64(mips64->core_cache->reg_list[num].value, 0, 64);
285  mips64->core_regs[num] = reg_value;
286  LOG_DEBUG("write core reg %i value 0x%" PRIx64 "", num, reg_value);
287  mips64->core_cache->reg_list[num].valid = 1;
288  mips64->core_cache->reg_list[num].dirty = 0;
289 
290  return ERROR_OK;
291 }
292 
293 int mips64_invalidate_core_regs(struct target *target)
294 {
295  /* get pointers to arch-specific information */
296  struct mips64_common *mips64 = target->arch_info;
297  unsigned int i;
298 
299  for (i = 0; i < mips64->core_cache->num_regs; i++) {
300  mips64->core_cache->reg_list[i].valid = 0;
301  mips64->core_cache->reg_list[i].dirty = 0;
302  }
303 
304  return ERROR_OK;
305 }
306 
307 
308 int mips64_get_gdb_reg_list(struct target *target, struct reg **reg_list[],
309  int *reg_list_size, enum target_register_class reg_class)
310 {
311  /* get pointers to arch-specific information */
312  struct mips64_common *mips64 = target->arch_info;
313  register int i;
314 
315  /* include floating point registers */
316  *reg_list_size = MIPS64_NUM_REGS;
317  *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size));
318 
319  for (i = 0; i < MIPS64_NUM_REGS; i++)
320  (*reg_list)[i] = &mips64->core_cache->reg_list[i];
321 
322  return ERROR_OK;
323 }
324 
325 int mips64_save_context(struct target *target)
326 {
327  int retval;
328  struct mips64_common *mips64 = target->arch_info;
329  struct mips_ejtag *ejtag_info = &mips64->ejtag_info;
330 
331  retval = mips64_pracc_read_regs(ejtag_info, mips64->core_regs);
332  if (retval != ERROR_OK)
333  return retval;
334 
335  for (unsigned i = 0; i < MIPS64_NUM_REGS; i++)
336  retval = mips64->read_core_reg(target, i);
337 
338  return retval;
339 }
340 
341 int mips64_restore_context(struct target *target)
342 {
343  struct mips64_common *mips64 = target->arch_info;
344  struct mips_ejtag *ejtag_info = &mips64->ejtag_info;
345 
346  for (unsigned i = 0; i < MIPS64_NUM_REGS; i++) {
347  if (mips64->core_cache->reg_list[i].dirty)
348  mips64->write_core_reg(target, i);
349  }
350 
351  return mips64_pracc_write_regs(ejtag_info, mips64->core_regs);
352 }
353 
354 int mips64_arch_state(struct target *target)
355 {
356  struct mips64_common *mips64 = target->arch_info;
357  struct reg *pc = &mips64->core_cache->reg_list[MIPS64_PC];
358 
359  if (mips64->common_magic != MIPS64_COMMON_MAGIC) {
360  LOG_ERROR("BUG: called for a non-MIPS64 target");
361  exit(-1);
362  }
363 
364  LOG_USER("target halted due to %s, pc: 0x%" PRIx64 "",
365  debug_reason_name(target), buf_get_u64(pc->value, 0, 64));
366 
367  return ERROR_OK;
368 }
369 
370 static const struct reg_arch_type mips64_reg_type = {
371  .get = mips64_get_core_reg,
372  .set = mips64_set_core_reg,
373 };
374 
375 int mips64_build_reg_cache(struct target *target)
376 {
377  /* get pointers to arch-specific information */
378  struct mips64_common *mips64 = target->arch_info;
379  struct reg_cache **cache_p, *cache;
380  struct mips64_core_reg *arch_info = NULL;
381  struct reg *reg_list = NULL;
382  unsigned i;
383 
384  cache = calloc(1, sizeof(*cache));
385  if (!cache) {
386  LOG_ERROR("unable to allocate cache");
387  return ERROR_FAIL;
388  }
389 
390  reg_list = calloc(MIPS64_NUM_REGS, sizeof(*reg_list));
391  if (!reg_list) {
392  LOG_ERROR("unable to allocate reg_list");
393  goto alloc_fail;
394  }
395 
396  arch_info = calloc(MIPS64_NUM_REGS, sizeof(*arch_info));
397  if (!arch_info) {
398  LOG_ERROR("unable to allocate arch_info");
399  goto alloc_fail;
400  }
401 
402  for (i = 0; i < MIPS64_NUM_REGS; i++) {
403  struct mips64_core_reg *a = &arch_info[i];
404  struct reg *r = &reg_list[i];
405 
406  r->arch_info = &arch_info[i];
407  r->caller_save = true; /* gdb defaults to true */
408  r->exist = true;
409  r->feature = &a->feature;
410  r->feature->name = mips64_regs[i].feature;
411  r->group = mips64_regs[i].group;
412  r->name = mips64_regs[i].name;
413  r->number = i;
414  r->reg_data_type = &a->reg_data_type;
415  r->reg_data_type->type = mips64_regs[i].type;
416  r->size = reg_type2size(mips64_regs[i].type);
417  r->type = &mips64_reg_type;
418  r->value = &a->value[0];
419 
420  a->mips64_common = mips64;
421  a->num = mips64_regs[i].id;
422  a->target = target;
423  }
424 
425  cache->name = "mips64 registers";
426  cache->reg_list = reg_list;
427  cache->num_regs = MIPS64_NUM_REGS;
428 
429  cache_p = register_get_last_cache_p(&target->reg_cache);
430  (*cache_p) = cache;
431 
432  mips64->core_cache = cache;
433 
434  return ERROR_OK;
435 
436 alloc_fail:
437  free(cache);
438  free(reg_list);
439  free(arch_info);
440 
441  return ERROR_FAIL;
442 }
443 
444 int mips64_init_arch_info(struct target *target, struct mips64_common *mips64,
445  struct jtag_tap *tap)
446 {
447  mips64->bp_scanned = false;
448  mips64->common_magic = MIPS64_COMMON_MAGIC;
449  mips64->data_break_list = NULL;
450  mips64->ejtag_info.tap = tap;
451  mips64->fast_data_area = NULL;
452  mips64->mips64mode32 = false;
453  mips64->read_core_reg = mips64_read_core_reg;
454  mips64->write_core_reg = mips64_write_core_reg;
455 
456  return ERROR_OK;
457 }
458 
459 int mips64_run_algorithm(struct target *target, int num_mem_params,
460  struct mem_param *mem_params, int num_reg_params,
461  struct reg_param *reg_params, target_addr_t entry_point,
462  target_addr_t exit_point, int timeout_ms, void *arch_info)
463 {
464  /* TODO */
465  return ERROR_OK;
466 }
467 
468 int mips64_examine(struct target *target)
469 {
470  struct mips64_common *mips64 = target->arch_info;
471 
472  if (target_was_examined(target))
473  return ERROR_OK;
474 
475  /* TODO: why we do not do mips64_configure_break_unit() here? */
476  mips64->bp_scanned = false;
477  mips64->num_data_bpoints = 0;
478  mips64->num_data_bpoints_avail = 0;
479  mips64->num_inst_bpoints = 0;
480  mips64->num_inst_bpoints_avail = 0;
481 
482  target_set_examined(target);
483 
484  return ERROR_OK;
485 }
486 
487 static int mips64_configure_i_break_unit(struct target *target)
488 {
489  /* get pointers to arch-specific information */
490  struct mips64_common *mips64 = target->arch_info;
491  struct mips64_comparator *ibl;
492  uint64_t bpinfo;
493  int retval;
494  int i;
495 
496  /* get number of inst breakpoints */
497  retval = target_read_u64(target, EJTAG64_V25_IBS, &bpinfo);
498  if (retval != ERROR_OK)
499  return retval;
500 
501  mips64->num_inst_bpoints = (bpinfo >> 24) & 0x0F;
502  mips64->num_inst_bpoints_avail = mips64->num_inst_bpoints;
503  ibl = calloc(mips64->num_inst_bpoints, sizeof(*ibl));
504  if (!ibl) {
505  LOG_ERROR("unable to allocate inst_break_list");
506  return ERROR_FAIL;
507  }
508 
509  for (i = 0; i < mips64->num_inst_bpoints; i++)
510  ibl[i].reg_address = EJTAG64_V25_IBA0 + (0x100 * i);
511 
512  mips64->inst_break_list = ibl;
513  /* clear IBIS reg */
514  retval = target_write_u64(target, EJTAG64_V25_IBS, 0);
515  if (retval != ERROR_OK)
516  return retval;
517 
518  return ERROR_OK;
519 }
520 
521 static int mips64_configure_d_break_unit(struct target *target)
522 {
523  struct mips64_common *mips64 = target->arch_info;
524  struct mips64_comparator *dbl;
525  uint64_t bpinfo;
526  int retval;
527  int i;
528 
529  /* get number of data breakpoints */
530  retval = target_read_u64(target, EJTAG64_V25_DBS, &bpinfo);
531  if (retval != ERROR_OK)
532  return retval;
533 
534  mips64->num_data_bpoints = (bpinfo >> 24) & 0x0F;
535  mips64->num_data_bpoints_avail = mips64->num_data_bpoints;
536 
537  dbl = calloc(mips64->num_data_bpoints, sizeof(*dbl));
538 
539  if (!dbl) {
540  LOG_ERROR("unable to allocate data_break_list");
541  return ERROR_FAIL;
542  }
543 
544  for (i = 0; i < mips64->num_data_bpoints; i++)
545  dbl[i].reg_address = EJTAG64_V25_DBA0 + (0x100 * i);
546 
547  mips64->data_break_list = dbl;
548 
549  /* clear DBIS reg */
550  retval = target_write_u64(target, EJTAG64_V25_DBS, 0);
551  if (retval != ERROR_OK)
552  return retval;
553 
554  return ERROR_OK;
555 }
556 
557 int mips64_configure_break_unit(struct target *target)
558 {
559  struct mips64_common *mips64 = target->arch_info;
560  uint64_t dcr;
561  int retval;
562 
563  if (mips64->bp_scanned)
564  return ERROR_OK;
565 
566  /* get info about breakpoint support */
567  retval = target_read_u64(target, EJTAG64_DCR, &dcr);
568  if (retval != ERROR_OK)
569  return retval;
570 
571  if (dcr & EJTAG64_DCR_IB) {
572  retval = mips64_configure_i_break_unit(target);
573  if (retval != ERROR_OK)
574  return retval;
575  }
576 
577  if (dcr & EJTAG64_DCR_DB) {
578  retval = mips64_configure_d_break_unit(target);
579  if (retval != ERROR_OK)
580  return retval;
581  }
582 
583  LOG_DEBUG("DCR 0x%" PRIx64 " numinst %i numdata %i", dcr,
584  mips64->num_inst_bpoints, mips64->num_data_bpoints);
585 
586  mips64->bp_scanned = true;
587 
588  return ERROR_OK;
589 }
590 
591 int mips64_enable_interrupts(struct target *target, bool enable)
592 {
593  int retval;
594  bool update = false;
595  uint64_t dcr;
596 
597  /* read debug control register */
598  retval = target_read_u64(target, EJTAG64_DCR, &dcr);
599  if (retval != ERROR_OK)
600  return retval;
601 
602  if (enable) {
603  if (!(dcr & EJTAG64_DCR_INTE)) {
604  /* enable interrupts */
605  dcr |= EJTAG64_DCR_INTE;
606  update = true;
607  }
608  } else {
609  if (dcr & EJTAG64_DCR_INTE) {
610  /* disable interrupts */
611  dcr &= ~(uint64_t)EJTAG64_DCR_INTE;
612  update = true;
613  }
614  }
615 
616  if (update) {
617  retval = target_write_u64(target, EJTAG64_DCR, dcr);
618  if (retval != ERROR_OK)
619  return retval;
620  }
621 
622  return ERROR_OK;
623 }
buf_set_u64
static void buf_set_u64(uint8_t *_buffer, unsigned first, unsigned num, uint64_t value)
Sets num bits in _buffer, starting at the first bit, using the bits in value.
Definition: binarybuffer.h:60
buf_get_u64
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
ERROR_COMMAND_ARGUMENT_INVALID
#define ERROR_COMMAND_ARGUMENT_INVALID
Definition: command.h:387
LOG_USER
#define LOG_USER(expr ...)
Definition: log.h:126
ERROR_FAIL
#define ERROR_FAIL
Definition: log.h:161
LOG_ERROR
#define LOG_ERROR(expr ...)
Definition: log.h:123
LOG_DEBUG
#define LOG_DEBUG(expr ...)
Definition: log.h:109
ERROR_OK
#define ERROR_OK
Definition: log.h:155
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int mips64_invalidate_core_regs(struct target *target)
Definition: mips64.c:293
mips64_set_core_reg
static int mips64_set_core_reg(struct reg *reg, uint8_t *buf)
Definition: mips64.c:240
mips64_read_core_reg
static int mips64_read_core_reg(struct target *target, int num)
Definition: mips64.c:256
mips64_get_core_reg
static int mips64_get_core_reg(struct reg *reg)
Definition: mips64.c:225
id
unsigned id
Definition: mips64.c:24
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static int reg_type2size(enum reg_type type)
Definition: mips64.c:211
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int mips64_init_arch_info(struct target *target, struct mips64_common *mips64, struct jtag_tap *tap)
Definition: mips64.c:444
mips64_restore_context
int mips64_restore_context(struct target *target)
Definition: mips64.c:341
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int mips64_examine(struct target *target)
Definition: mips64.c:468
mips64_enable_interrupts
int mips64_enable_interrupts(struct target *target, bool enable)
Definition: mips64.c:591
mips64_regs
static const struct @105 mips64_regs[]
mips64_configure_d_break_unit
static int mips64_configure_d_break_unit(struct target *target)
Definition: mips64.c:521
mips64_arch_state
int mips64_arch_state(struct target *target)
Definition: mips64.c:354
group
const char * group
Definition: mips64.c:27
mips64_configure_break_unit
int mips64_configure_break_unit(struct target *target)
Definition: mips64.c:557
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int mips64_build_reg_cache(struct target *target)
Definition: mips64.c:375
mips64_save_context
int mips64_save_context(struct target *target)
Definition: mips64.c:325
mips64_configure_i_break_unit
static int mips64_configure_i_break_unit(struct target *target)
Definition: mips64.c:487
name
const char * name
Definition: mips64.c:25
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static int mips64_write_core_reg(struct target *target, int num)
Definition: mips64.c:274
type
enum reg_type type
Definition: mips64.c:26
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static const struct reg_arch_type mips64_reg_type
Definition: mips64.c:370
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int flag
Definition: mips64.c:29
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int mips64_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int *reg_list_size, enum target_register_class reg_class)
Definition: mips64.c:308
feature
const char * feature
Definition: mips64.c:28
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int mips64_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)
Definition: mips64.c:459
MIPS64_NUM_CORE_REGS
#define MIPS64_NUM_CORE_REGS
Definition: mips64.h:65
MIPS64_NUM_CORE_C0_REGS
#define MIPS64_NUM_CORE_C0_REGS
Definition: mips64.h:73
MIPS64_COMMON_MAGIC
#define MIPS64_COMMON_MAGIC
Definition: mips64.h:22
MIPS64_PC
#define MIPS64_PC
Definition: mips64.h:75
MIPS64_NUM_REGS
#define MIPS64_NUM_REGS
Definition: mips64.h:69
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int mips64_pracc_write_regs(struct mips_ejtag *ejtag_info, uint64_t *regs)
Definition: mips64_pracc.c:827
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int mips64_pracc_read_regs(struct mips_ejtag *ejtag_info, uint64_t *regs)
Definition: mips64_pracc.c:1037
EJTAG64_DCR_DB
#define EJTAG64_DCR_DB
Definition: mips_ejtag.h:179
EJTAG64_V25_DBS
#define EJTAG64_V25_DBS
Definition: mips_ejtag.h:184
EJTAG64_V25_DBA0
#define EJTAG64_V25_DBA0
Definition: mips_ejtag.h:183
EJTAG64_DCR_INTE
#define EJTAG64_DCR_INTE
Definition: mips_ejtag.h:181
EJTAG64_DCR
#define EJTAG64_DCR
Definition: mips_ejtag.h:177
EJTAG64_DCR_IB
#define EJTAG64_DCR_IB
Definition: mips_ejtag.h:180
EJTAG64_V25_IBS
#define EJTAG64_V25_IBS
Definition: mips_ejtag.h:186
EJTAG64_V25_IBA0
#define EJTAG64_V25_IBA0
Definition: mips_ejtag.h:185
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struct reg_cache ** register_get_last_cache_p(struct reg_cache **first)
Definition: register.c:72
reg_type
reg_type
Definition: register.h:19
REG_TYPE_INT
@ REG_TYPE_INT
Definition: register.h:21
REG_TYPE_IEEE_DOUBLE
@ REG_TYPE_IEEE_DOUBLE
Definition: register.h:37
REG_TYPE_UINT32
@ REG_TYPE_UINT32
Definition: register.h:30
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@ REG_TYPE_UINT64
Definition: register.h:31
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struct target * target
Definition: rtt/rtt.c:26
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Definition: jtag.h:100
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Definition: algorithm.h:20
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Definition: mips64.h:83
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int(* read_core_reg)(struct target *target, int num)
Definition: mips64.h:102
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int num_data_bpoints
Definition: mips64.h:95
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struct working_area * fast_data_area
Definition: mips64.h:91
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Definition: mips64.h:93
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struct mips64_comparator * data_break_list
Definition: mips64.h:99
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unsigned int common_magic
Definition: mips64.h:84
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int num_inst_bpoints_avail
Definition: mips64.h:96
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Definition: mips64.h:98
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int(* write_core_reg)(struct target *target, int num)
Definition: mips64.h:103
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struct reg_cache * core_cache
Definition: mips64.h:87
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struct mips_ejtag ejtag_info
Definition: mips64.h:88
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uint64_t core_regs[MIPS64_NUM_REGS]
Definition: mips64.h:89
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int num_inst_bpoints
Definition: mips64.h:94
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bool mips64mode32
Definition: mips64.h:105
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int num_data_bpoints_avail
Definition: mips64.h:97
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Definition: mips64.h:77
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uint64_t reg_address
Definition: mips64.h:80
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Definition: mips64.h:108
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Definition: mips64.h:112
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struct reg_feature feature
Definition: mips64.h:113
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struct mips64_common * mips64_common
Definition: mips64.h:111
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Definition: mips64.h:110
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uint32_t num
Definition: mips64.h:109
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struct reg_data_type reg_data_type
Definition: mips64.h:114
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Definition: mips_ejtag.h:188
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struct jtag_tap * tap
Definition: mips_ejtag.h:189
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Definition: register.h:151
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int(* get)(struct reg *reg)
Definition: register.h:152
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Definition: register.h:144
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Definition: register.h:145
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Definition: register.h:148
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Definition: register.h:147
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Definition: register.h:100
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Definition: register.h:42
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Definition: algorithm.h:27
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Definition: register.h:111
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Definition: register.h:119
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Definition: register.h:126
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Definition: register.h:128
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Definition: register.h:132
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Definition: register.h:138
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Definition: register.h:122
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Definition: register.h:117
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Definition: register.h:135
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Definition: register.h:115
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Definition: register.h:140
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Definition: register.h:124
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const struct reg_arch_type * type
Definition: register.h:141
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Definition: register.h:113
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Definition: target.h:120
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Definition: target.h:162
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Definition: target.h:163
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Definition: target.h:169
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Definition: target.c:2686
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const char * debug_reason_name(struct target *t)
Definition: target.c:289
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int target_read_u64(struct target *target, target_addr_t address, uint64_t *value)
Definition: target.c:2592
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Definition: target.h:114
ERROR_TARGET_NOT_HALTED
#define ERROR_TARGET_NOT_HALTED
Definition: target.h:792
TARGET_HALTED
@ TARGET_HALTED
Definition: target.h:55
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static void target_set_examined(struct target *target)
Sets the examined flag for the given target.
Definition: target.h:445
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static bool target_was_examined(struct target *target)
Definition: target.h:438
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uint64_t target_addr_t
Definition: types.h:335
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#define NULL
Definition: usb.h:16