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176eb98c MS |
1 | /* GNU/Linux/AArch64 specific low level interface, for the remote server for |
2 | GDB. | |
3 | ||
32d0add0 | 4 | Copyright (C) 2009-2015 Free Software Foundation, Inc. |
176eb98c MS |
5 | Contributed by ARM Ltd. |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #include "server.h" | |
23 | #include "linux-low.h" | |
db3cb7cb | 24 | #include "nat/aarch64-linux.h" |
554717a3 | 25 | #include "nat/aarch64-linux-hw-point.h" |
3b53ae99 | 26 | #include "linux-aarch32-low.h" |
176eb98c MS |
27 | #include "elf/common.h" |
28 | ||
29 | #include <signal.h> | |
30 | #include <sys/user.h> | |
5826e159 | 31 | #include "nat/gdb_ptrace.h" |
e9dae05e | 32 | #include <asm/ptrace.h> |
176eb98c MS |
33 | |
34 | #include "gdb_proc_service.h" | |
35 | ||
36 | /* Defined in auto-generated files. */ | |
37 | void init_registers_aarch64 (void); | |
3aee8918 | 38 | extern const struct target_desc *tdesc_aarch64; |
176eb98c | 39 | |
176eb98c MS |
40 | #ifdef HAVE_SYS_REG_H |
41 | #include <sys/reg.h> | |
42 | #endif | |
43 | ||
44 | #define AARCH64_X_REGS_NUM 31 | |
45 | #define AARCH64_V_REGS_NUM 32 | |
46 | #define AARCH64_X0_REGNO 0 | |
47 | #define AARCH64_SP_REGNO 31 | |
48 | #define AARCH64_PC_REGNO 32 | |
49 | #define AARCH64_CPSR_REGNO 33 | |
50 | #define AARCH64_V0_REGNO 34 | |
bf330350 CU |
51 | #define AARCH64_FPSR_REGNO (AARCH64_V0_REGNO + AARCH64_V_REGS_NUM) |
52 | #define AARCH64_FPCR_REGNO (AARCH64_V0_REGNO + AARCH64_V_REGS_NUM + 1) | |
176eb98c | 53 | |
bf330350 | 54 | #define AARCH64_NUM_REGS (AARCH64_V0_REGNO + AARCH64_V_REGS_NUM + 2) |
176eb98c | 55 | |
176eb98c MS |
56 | /* Per-process arch-specific data we want to keep. */ |
57 | ||
58 | struct arch_process_info | |
59 | { | |
60 | /* Hardware breakpoint/watchpoint data. | |
61 | The reason for them to be per-process rather than per-thread is | |
62 | due to the lack of information in the gdbserver environment; | |
63 | gdbserver is not told that whether a requested hardware | |
64 | breakpoint/watchpoint is thread specific or not, so it has to set | |
65 | each hw bp/wp for every thread in the current process. The | |
66 | higher level bp/wp management in gdb will resume a thread if a hw | |
67 | bp/wp trap is not expected for it. Since the hw bp/wp setting is | |
68 | same for each thread, it is reasonable for the data to live here. | |
69 | */ | |
70 | struct aarch64_debug_reg_state debug_reg_state; | |
71 | }; | |
72 | ||
3b53ae99 YQ |
73 | /* Return true if the size of register 0 is 8 byte. */ |
74 | ||
75 | static int | |
76 | is_64bit_tdesc (void) | |
77 | { | |
78 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
79 | ||
80 | return register_size (regcache->tdesc, 0) == 8; | |
81 | } | |
82 | ||
421530db PL |
83 | /* Implementation of linux_target_ops method "cannot_store_register". */ |
84 | ||
176eb98c MS |
85 | static int |
86 | aarch64_cannot_store_register (int regno) | |
87 | { | |
88 | return regno >= AARCH64_NUM_REGS; | |
89 | } | |
90 | ||
421530db PL |
91 | /* Implementation of linux_target_ops method "cannot_fetch_register". */ |
92 | ||
176eb98c MS |
93 | static int |
94 | aarch64_cannot_fetch_register (int regno) | |
95 | { | |
96 | return regno >= AARCH64_NUM_REGS; | |
97 | } | |
98 | ||
99 | static void | |
100 | aarch64_fill_gregset (struct regcache *regcache, void *buf) | |
101 | { | |
102 | struct user_pt_regs *regset = buf; | |
103 | int i; | |
104 | ||
105 | for (i = 0; i < AARCH64_X_REGS_NUM; i++) | |
106 | collect_register (regcache, AARCH64_X0_REGNO + i, ®set->regs[i]); | |
107 | collect_register (regcache, AARCH64_SP_REGNO, ®set->sp); | |
108 | collect_register (regcache, AARCH64_PC_REGNO, ®set->pc); | |
109 | collect_register (regcache, AARCH64_CPSR_REGNO, ®set->pstate); | |
110 | } | |
111 | ||
112 | static void | |
113 | aarch64_store_gregset (struct regcache *regcache, const void *buf) | |
114 | { | |
115 | const struct user_pt_regs *regset = buf; | |
116 | int i; | |
117 | ||
118 | for (i = 0; i < AARCH64_X_REGS_NUM; i++) | |
119 | supply_register (regcache, AARCH64_X0_REGNO + i, ®set->regs[i]); | |
120 | supply_register (regcache, AARCH64_SP_REGNO, ®set->sp); | |
121 | supply_register (regcache, AARCH64_PC_REGNO, ®set->pc); | |
122 | supply_register (regcache, AARCH64_CPSR_REGNO, ®set->pstate); | |
123 | } | |
124 | ||
125 | static void | |
126 | aarch64_fill_fpregset (struct regcache *regcache, void *buf) | |
127 | { | |
128 | struct user_fpsimd_state *regset = buf; | |
129 | int i; | |
130 | ||
131 | for (i = 0; i < AARCH64_V_REGS_NUM; i++) | |
132 | collect_register (regcache, AARCH64_V0_REGNO + i, ®set->vregs[i]); | |
bf330350 CU |
133 | collect_register (regcache, AARCH64_FPSR_REGNO, ®set->fpsr); |
134 | collect_register (regcache, AARCH64_FPCR_REGNO, ®set->fpcr); | |
176eb98c MS |
135 | } |
136 | ||
137 | static void | |
138 | aarch64_store_fpregset (struct regcache *regcache, const void *buf) | |
139 | { | |
140 | const struct user_fpsimd_state *regset = buf; | |
141 | int i; | |
142 | ||
143 | for (i = 0; i < AARCH64_V_REGS_NUM; i++) | |
144 | supply_register (regcache, AARCH64_V0_REGNO + i, ®set->vregs[i]); | |
bf330350 CU |
145 | supply_register (regcache, AARCH64_FPSR_REGNO, ®set->fpsr); |
146 | supply_register (regcache, AARCH64_FPCR_REGNO, ®set->fpcr); | |
176eb98c MS |
147 | } |
148 | ||
176eb98c MS |
149 | /* Enable miscellaneous debugging output. The name is historical - it |
150 | was originally used to debug LinuxThreads support. */ | |
151 | extern int debug_threads; | |
152 | ||
421530db PL |
153 | /* Implementation of linux_target_ops method "get_pc". */ |
154 | ||
176eb98c MS |
155 | static CORE_ADDR |
156 | aarch64_get_pc (struct regcache *regcache) | |
157 | { | |
8a7e4587 YQ |
158 | if (register_size (regcache->tdesc, 0) == 8) |
159 | { | |
160 | unsigned long pc; | |
161 | ||
162 | collect_register_by_name (regcache, "pc", &pc); | |
163 | if (debug_threads) | |
164 | debug_printf ("stop pc is %08lx\n", pc); | |
165 | return pc; | |
166 | } | |
167 | else | |
168 | { | |
169 | unsigned int pc; | |
170 | ||
171 | collect_register_by_name (regcache, "pc", &pc); | |
172 | if (debug_threads) | |
173 | debug_printf ("stop pc is %04x\n", pc); | |
174 | return pc; | |
175 | } | |
176eb98c MS |
176 | } |
177 | ||
421530db PL |
178 | /* Implementation of linux_target_ops method "set_pc". */ |
179 | ||
176eb98c MS |
180 | static void |
181 | aarch64_set_pc (struct regcache *regcache, CORE_ADDR pc) | |
182 | { | |
8a7e4587 YQ |
183 | if (register_size (regcache->tdesc, 0) == 8) |
184 | { | |
185 | unsigned long newpc = pc; | |
186 | supply_register_by_name (regcache, "pc", &newpc); | |
187 | } | |
188 | else | |
189 | { | |
190 | unsigned int newpc = pc; | |
191 | supply_register_by_name (regcache, "pc", &newpc); | |
192 | } | |
176eb98c MS |
193 | } |
194 | ||
176eb98c MS |
195 | #define aarch64_breakpoint_len 4 |
196 | ||
37d66942 PL |
197 | /* AArch64 BRK software debug mode instruction. |
198 | This instruction needs to match gdb/aarch64-tdep.c | |
199 | (aarch64_default_breakpoint). */ | |
200 | static const gdb_byte aarch64_breakpoint[] = {0x00, 0x00, 0x20, 0xd4}; | |
176eb98c | 201 | |
421530db PL |
202 | /* Implementation of linux_target_ops method "breakpoint_at". */ |
203 | ||
176eb98c MS |
204 | static int |
205 | aarch64_breakpoint_at (CORE_ADDR where) | |
206 | { | |
37d66942 | 207 | gdb_byte insn[aarch64_breakpoint_len]; |
176eb98c | 208 | |
37d66942 PL |
209 | (*the_target->read_memory) (where, (unsigned char *) &insn, |
210 | aarch64_breakpoint_len); | |
211 | if (memcmp (insn, aarch64_breakpoint, aarch64_breakpoint_len) == 0) | |
176eb98c MS |
212 | return 1; |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
176eb98c MS |
217 | static void |
218 | aarch64_init_debug_reg_state (struct aarch64_debug_reg_state *state) | |
219 | { | |
220 | int i; | |
221 | ||
222 | for (i = 0; i < AARCH64_HBP_MAX_NUM; ++i) | |
223 | { | |
224 | state->dr_addr_bp[i] = 0; | |
225 | state->dr_ctrl_bp[i] = 0; | |
226 | state->dr_ref_count_bp[i] = 0; | |
227 | } | |
228 | ||
229 | for (i = 0; i < AARCH64_HWP_MAX_NUM; ++i) | |
230 | { | |
231 | state->dr_addr_wp[i] = 0; | |
232 | state->dr_ctrl_wp[i] = 0; | |
233 | state->dr_ref_count_wp[i] = 0; | |
234 | } | |
235 | } | |
236 | ||
176eb98c MS |
237 | /* Return the pointer to the debug register state structure in the |
238 | current process' arch-specific data area. */ | |
239 | ||
db3cb7cb | 240 | struct aarch64_debug_reg_state * |
88e2cf7e | 241 | aarch64_get_debug_reg_state (pid_t pid) |
176eb98c | 242 | { |
88e2cf7e | 243 | struct process_info *proc = find_process_pid (pid); |
176eb98c | 244 | |
fe978cb0 | 245 | return &proc->priv->arch_private->debug_reg_state; |
176eb98c MS |
246 | } |
247 | ||
421530db PL |
248 | /* Implementation of linux_target_ops method "supports_z_point_type". */ |
249 | ||
4ff0d3d8 PA |
250 | static int |
251 | aarch64_supports_z_point_type (char z_type) | |
252 | { | |
253 | switch (z_type) | |
254 | { | |
96c97461 | 255 | case Z_PACKET_SW_BP: |
6085d6f6 YQ |
256 | { |
257 | if (!extended_protocol && is_64bit_tdesc ()) | |
258 | { | |
259 | /* Only enable Z0 packet in non-multi-arch debugging. If | |
260 | extended protocol is used, don't enable Z0 packet because | |
261 | GDBserver may attach to 32-bit process. */ | |
262 | return 1; | |
263 | } | |
264 | else | |
265 | { | |
266 | /* Disable Z0 packet so that GDBserver doesn't have to handle | |
267 | different breakpoint instructions (aarch64, arm, thumb etc) | |
268 | in multi-arch debugging. */ | |
269 | return 0; | |
270 | } | |
271 | } | |
4ff0d3d8 PA |
272 | case Z_PACKET_HW_BP: |
273 | case Z_PACKET_WRITE_WP: | |
274 | case Z_PACKET_READ_WP: | |
275 | case Z_PACKET_ACCESS_WP: | |
276 | return 1; | |
277 | default: | |
4ff0d3d8 PA |
278 | return 0; |
279 | } | |
280 | } | |
281 | ||
421530db | 282 | /* Implementation of linux_target_ops method "insert_point". |
176eb98c | 283 | |
421530db PL |
284 | It actually only records the info of the to-be-inserted bp/wp; |
285 | the actual insertion will happen when threads are resumed. */ | |
176eb98c MS |
286 | |
287 | static int | |
802e8e6d PA |
288 | aarch64_insert_point (enum raw_bkpt_type type, CORE_ADDR addr, |
289 | int len, struct raw_breakpoint *bp) | |
176eb98c MS |
290 | { |
291 | int ret; | |
4ff0d3d8 | 292 | enum target_hw_bp_type targ_type; |
88e2cf7e YQ |
293 | struct aarch64_debug_reg_state *state |
294 | = aarch64_get_debug_reg_state (pid_of (current_thread)); | |
4ff0d3d8 | 295 | |
c5e92cca | 296 | if (show_debug_regs) |
176eb98c MS |
297 | fprintf (stderr, "insert_point on entry (addr=0x%08lx, len=%d)\n", |
298 | (unsigned long) addr, len); | |
299 | ||
802e8e6d PA |
300 | /* Determine the type from the raw breakpoint type. */ |
301 | targ_type = raw_bkpt_type_to_target_hw_bp_type (type); | |
176eb98c MS |
302 | |
303 | if (targ_type != hw_execute) | |
39edd165 YQ |
304 | { |
305 | if (aarch64_linux_region_ok_for_watchpoint (addr, len)) | |
306 | ret = aarch64_handle_watchpoint (targ_type, addr, len, | |
307 | 1 /* is_insert */, state); | |
308 | else | |
309 | ret = -1; | |
310 | } | |
176eb98c MS |
311 | else |
312 | ret = | |
c67ca4de YQ |
313 | aarch64_handle_breakpoint (targ_type, addr, len, 1 /* is_insert */, |
314 | state); | |
176eb98c | 315 | |
60a191ed | 316 | if (show_debug_regs) |
88e2cf7e YQ |
317 | aarch64_show_debug_reg_state (state, "insert_point", addr, len, |
318 | targ_type); | |
176eb98c MS |
319 | |
320 | return ret; | |
321 | } | |
322 | ||
421530db | 323 | /* Implementation of linux_target_ops method "remove_point". |
176eb98c | 324 | |
421530db PL |
325 | It actually only records the info of the to-be-removed bp/wp, |
326 | the actual removal will be done when threads are resumed. */ | |
176eb98c MS |
327 | |
328 | static int | |
802e8e6d PA |
329 | aarch64_remove_point (enum raw_bkpt_type type, CORE_ADDR addr, |
330 | int len, struct raw_breakpoint *bp) | |
176eb98c MS |
331 | { |
332 | int ret; | |
4ff0d3d8 | 333 | enum target_hw_bp_type targ_type; |
88e2cf7e YQ |
334 | struct aarch64_debug_reg_state *state |
335 | = aarch64_get_debug_reg_state (pid_of (current_thread)); | |
4ff0d3d8 | 336 | |
c5e92cca | 337 | if (show_debug_regs) |
176eb98c MS |
338 | fprintf (stderr, "remove_point on entry (addr=0x%08lx, len=%d)\n", |
339 | (unsigned long) addr, len); | |
340 | ||
802e8e6d PA |
341 | /* Determine the type from the raw breakpoint type. */ |
342 | targ_type = raw_bkpt_type_to_target_hw_bp_type (type); | |
176eb98c MS |
343 | |
344 | /* Set up state pointers. */ | |
345 | if (targ_type != hw_execute) | |
346 | ret = | |
c67ca4de YQ |
347 | aarch64_handle_watchpoint (targ_type, addr, len, 0 /* is_insert */, |
348 | state); | |
176eb98c MS |
349 | else |
350 | ret = | |
c67ca4de YQ |
351 | aarch64_handle_breakpoint (targ_type, addr, len, 0 /* is_insert */, |
352 | state); | |
176eb98c | 353 | |
60a191ed | 354 | if (show_debug_regs) |
88e2cf7e YQ |
355 | aarch64_show_debug_reg_state (state, "remove_point", addr, len, |
356 | targ_type); | |
176eb98c MS |
357 | |
358 | return ret; | |
359 | } | |
360 | ||
421530db | 361 | /* Implementation of linux_target_ops method "stopped_data_address". */ |
176eb98c MS |
362 | |
363 | static CORE_ADDR | |
364 | aarch64_stopped_data_address (void) | |
365 | { | |
366 | siginfo_t siginfo; | |
367 | int pid, i; | |
368 | struct aarch64_debug_reg_state *state; | |
369 | ||
0bfdf32f | 370 | pid = lwpid_of (current_thread); |
176eb98c MS |
371 | |
372 | /* Get the siginfo. */ | |
373 | if (ptrace (PTRACE_GETSIGINFO, pid, NULL, &siginfo) != 0) | |
374 | return (CORE_ADDR) 0; | |
375 | ||
376 | /* Need to be a hardware breakpoint/watchpoint trap. */ | |
377 | if (siginfo.si_signo != SIGTRAP | |
378 | || (siginfo.si_code & 0xffff) != 0x0004 /* TRAP_HWBKPT */) | |
379 | return (CORE_ADDR) 0; | |
380 | ||
381 | /* Check if the address matches any watched address. */ | |
88e2cf7e | 382 | state = aarch64_get_debug_reg_state (pid_of (current_thread)); |
176eb98c MS |
383 | for (i = aarch64_num_wp_regs - 1; i >= 0; --i) |
384 | { | |
385 | const unsigned int len = aarch64_watchpoint_length (state->dr_ctrl_wp[i]); | |
386 | const CORE_ADDR addr_trap = (CORE_ADDR) siginfo.si_addr; | |
387 | const CORE_ADDR addr_watch = state->dr_addr_wp[i]; | |
388 | if (state->dr_ref_count_wp[i] | |
389 | && DR_CONTROL_ENABLED (state->dr_ctrl_wp[i]) | |
390 | && addr_trap >= addr_watch | |
391 | && addr_trap < addr_watch + len) | |
392 | return addr_trap; | |
393 | } | |
394 | ||
395 | return (CORE_ADDR) 0; | |
396 | } | |
397 | ||
421530db | 398 | /* Implementation of linux_target_ops method "stopped_by_watchpoint". */ |
176eb98c MS |
399 | |
400 | static int | |
401 | aarch64_stopped_by_watchpoint (void) | |
402 | { | |
403 | if (aarch64_stopped_data_address () != 0) | |
404 | return 1; | |
405 | else | |
406 | return 0; | |
407 | } | |
408 | ||
409 | /* Fetch the thread-local storage pointer for libthread_db. */ | |
410 | ||
411 | ps_err_e | |
55fac6e0 | 412 | ps_get_thread_area (const struct ps_prochandle *ph, |
176eb98c MS |
413 | lwpid_t lwpid, int idx, void **base) |
414 | { | |
a0cc84cd YQ |
415 | return aarch64_ps_get_thread_area (ph, lwpid, idx, base, |
416 | is_64bit_tdesc ()); | |
176eb98c MS |
417 | } |
418 | ||
ade90bde YQ |
419 | /* Implementation of linux_target_ops method "siginfo_fixup". */ |
420 | ||
421 | static int | |
422 | aarch64_linux_siginfo_fixup (siginfo_t *native, void *inf, int direction) | |
423 | { | |
424 | /* Is the inferior 32-bit? If so, then fixup the siginfo object. */ | |
425 | if (!is_64bit_tdesc ()) | |
426 | { | |
427 | if (direction == 0) | |
428 | aarch64_compat_siginfo_from_siginfo ((struct compat_siginfo *) inf, | |
429 | native); | |
430 | else | |
431 | aarch64_siginfo_from_compat_siginfo (native, | |
432 | (struct compat_siginfo *) inf); | |
433 | ||
434 | return 1; | |
435 | } | |
436 | ||
437 | return 0; | |
438 | } | |
439 | ||
421530db | 440 | /* Implementation of linux_target_ops method "linux_new_process". */ |
176eb98c MS |
441 | |
442 | static struct arch_process_info * | |
443 | aarch64_linux_new_process (void) | |
444 | { | |
8d749320 | 445 | struct arch_process_info *info = XCNEW (struct arch_process_info); |
176eb98c MS |
446 | |
447 | aarch64_init_debug_reg_state (&info->debug_reg_state); | |
448 | ||
449 | return info; | |
450 | } | |
451 | ||
421530db PL |
452 | /* Implementation of linux_target_ops method "linux_new_fork". */ |
453 | ||
3a8a0396 DB |
454 | static void |
455 | aarch64_linux_new_fork (struct process_info *parent, | |
456 | struct process_info *child) | |
457 | { | |
458 | /* These are allocated by linux_add_process. */ | |
61a7418c DB |
459 | gdb_assert (parent->priv != NULL |
460 | && parent->priv->arch_private != NULL); | |
461 | gdb_assert (child->priv != NULL | |
462 | && child->priv->arch_private != NULL); | |
3a8a0396 DB |
463 | |
464 | /* Linux kernel before 2.6.33 commit | |
465 | 72f674d203cd230426437cdcf7dd6f681dad8b0d | |
466 | will inherit hardware debug registers from parent | |
467 | on fork/vfork/clone. Newer Linux kernels create such tasks with | |
468 | zeroed debug registers. | |
469 | ||
470 | GDB core assumes the child inherits the watchpoints/hw | |
471 | breakpoints of the parent, and will remove them all from the | |
472 | forked off process. Copy the debug registers mirrors into the | |
473 | new process so that all breakpoints and watchpoints can be | |
474 | removed together. The debug registers mirror will become zeroed | |
475 | in the end before detaching the forked off process, thus making | |
476 | this compatible with older Linux kernels too. */ | |
477 | ||
61a7418c | 478 | *child->priv->arch_private = *parent->priv->arch_private; |
3a8a0396 DB |
479 | } |
480 | ||
3b53ae99 YQ |
481 | /* Return the right target description according to the ELF file of |
482 | current thread. */ | |
483 | ||
484 | static const struct target_desc * | |
485 | aarch64_linux_read_description (void) | |
486 | { | |
487 | unsigned int machine; | |
488 | int is_elf64; | |
489 | int tid; | |
490 | ||
491 | tid = lwpid_of (current_thread); | |
492 | ||
493 | is_elf64 = linux_pid_exe_is_elf_64_file (tid, &machine); | |
494 | ||
495 | if (is_elf64) | |
496 | return tdesc_aarch64; | |
497 | else | |
498 | return tdesc_arm_with_neon; | |
499 | } | |
500 | ||
421530db PL |
501 | /* Implementation of linux_target_ops method "arch_setup". */ |
502 | ||
176eb98c MS |
503 | static void |
504 | aarch64_arch_setup (void) | |
505 | { | |
3b53ae99 | 506 | current_process ()->tdesc = aarch64_linux_read_description (); |
176eb98c | 507 | |
af1b22f3 | 508 | aarch64_linux_get_debug_reg_capacity (lwpid_of (current_thread)); |
176eb98c MS |
509 | } |
510 | ||
3aee8918 | 511 | static struct regset_info aarch64_regsets[] = |
176eb98c MS |
512 | { |
513 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_PRSTATUS, | |
514 | sizeof (struct user_pt_regs), GENERAL_REGS, | |
515 | aarch64_fill_gregset, aarch64_store_gregset }, | |
516 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_FPREGSET, | |
517 | sizeof (struct user_fpsimd_state), FP_REGS, | |
518 | aarch64_fill_fpregset, aarch64_store_fpregset | |
519 | }, | |
520 | { 0, 0, 0, -1, -1, NULL, NULL } | |
521 | }; | |
522 | ||
3aee8918 PA |
523 | static struct regsets_info aarch64_regsets_info = |
524 | { | |
525 | aarch64_regsets, /* regsets */ | |
526 | 0, /* num_regsets */ | |
527 | NULL, /* disabled_regsets */ | |
528 | }; | |
529 | ||
3b53ae99 | 530 | static struct regs_info regs_info_aarch64 = |
3aee8918 PA |
531 | { |
532 | NULL, /* regset_bitmap */ | |
c2d65f38 | 533 | NULL, /* usrregs */ |
3aee8918 PA |
534 | &aarch64_regsets_info, |
535 | }; | |
536 | ||
421530db PL |
537 | /* Implementation of linux_target_ops method "regs_info". */ |
538 | ||
3aee8918 PA |
539 | static const struct regs_info * |
540 | aarch64_regs_info (void) | |
541 | { | |
3b53ae99 YQ |
542 | if (is_64bit_tdesc ()) |
543 | return ®s_info_aarch64; | |
544 | else | |
545 | return ®s_info_aarch32; | |
3aee8918 PA |
546 | } |
547 | ||
7671bf47 PL |
548 | /* Implementation of linux_target_ops method "supports_tracepoints". */ |
549 | ||
550 | static int | |
551 | aarch64_supports_tracepoints (void) | |
552 | { | |
524b57e6 YQ |
553 | if (current_thread == NULL) |
554 | return 1; | |
555 | else | |
556 | { | |
557 | /* We don't support tracepoints on aarch32 now. */ | |
558 | return is_64bit_tdesc (); | |
559 | } | |
7671bf47 PL |
560 | } |
561 | ||
d1d0aea1 PL |
562 | /* Implementation of linux_target_ops method "supports_range_stepping". */ |
563 | ||
564 | static int | |
565 | aarch64_supports_range_stepping (void) | |
566 | { | |
567 | return 1; | |
568 | } | |
569 | ||
176eb98c MS |
570 | struct linux_target_ops the_low_target = |
571 | { | |
572 | aarch64_arch_setup, | |
3aee8918 | 573 | aarch64_regs_info, |
176eb98c MS |
574 | aarch64_cannot_fetch_register, |
575 | aarch64_cannot_store_register, | |
421530db | 576 | NULL, /* fetch_register */ |
176eb98c MS |
577 | aarch64_get_pc, |
578 | aarch64_set_pc, | |
579 | (const unsigned char *) &aarch64_breakpoint, | |
580 | aarch64_breakpoint_len, | |
421530db PL |
581 | NULL, /* breakpoint_reinsert_addr */ |
582 | 0, /* decr_pc_after_break */ | |
176eb98c | 583 | aarch64_breakpoint_at, |
802e8e6d | 584 | aarch64_supports_z_point_type, |
176eb98c MS |
585 | aarch64_insert_point, |
586 | aarch64_remove_point, | |
587 | aarch64_stopped_by_watchpoint, | |
588 | aarch64_stopped_data_address, | |
421530db PL |
589 | NULL, /* collect_ptrace_register */ |
590 | NULL, /* supply_ptrace_register */ | |
ade90bde | 591 | aarch64_linux_siginfo_fixup, |
176eb98c MS |
592 | aarch64_linux_new_process, |
593 | aarch64_linux_new_thread, | |
3a8a0396 | 594 | aarch64_linux_new_fork, |
176eb98c | 595 | aarch64_linux_prepare_to_resume, |
421530db | 596 | NULL, /* process_qsupported */ |
7671bf47 | 597 | aarch64_supports_tracepoints, |
d1d0aea1 PL |
598 | NULL, /* get_thread_area */ |
599 | NULL, /* install_fast_tracepoint_jump_pad */ | |
600 | NULL, /* emit_ops */ | |
601 | NULL, /* get_min_fast_tracepoint_insn_len */ | |
602 | aarch64_supports_range_stepping, | |
176eb98c | 603 | }; |
3aee8918 PA |
604 | |
605 | void | |
606 | initialize_low_arch (void) | |
607 | { | |
608 | init_registers_aarch64 (); | |
609 | ||
3b53ae99 YQ |
610 | initialize_low_arch_aarch32 (); |
611 | ||
3aee8918 PA |
612 | initialize_regsets_info (&aarch64_regsets_info); |
613 | } |