Commit | Line | Data |
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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 | #include <sys/uio.h> |
34 | ||
35 | #include "gdb_proc_service.h" | |
36 | ||
37 | /* Defined in auto-generated files. */ | |
38 | void init_registers_aarch64 (void); | |
3aee8918 | 39 | extern const struct target_desc *tdesc_aarch64; |
176eb98c | 40 | |
176eb98c MS |
41 | #ifdef HAVE_SYS_REG_H |
42 | #include <sys/reg.h> | |
43 | #endif | |
44 | ||
45 | #define AARCH64_X_REGS_NUM 31 | |
46 | #define AARCH64_V_REGS_NUM 32 | |
47 | #define AARCH64_X0_REGNO 0 | |
48 | #define AARCH64_SP_REGNO 31 | |
49 | #define AARCH64_PC_REGNO 32 | |
50 | #define AARCH64_CPSR_REGNO 33 | |
51 | #define AARCH64_V0_REGNO 34 | |
bf330350 CU |
52 | #define AARCH64_FPSR_REGNO (AARCH64_V0_REGNO + AARCH64_V_REGS_NUM) |
53 | #define AARCH64_FPCR_REGNO (AARCH64_V0_REGNO + AARCH64_V_REGS_NUM + 1) | |
176eb98c | 54 | |
bf330350 | 55 | #define AARCH64_NUM_REGS (AARCH64_V0_REGNO + AARCH64_V_REGS_NUM + 2) |
176eb98c | 56 | |
176eb98c MS |
57 | /* Per-process arch-specific data we want to keep. */ |
58 | ||
59 | struct arch_process_info | |
60 | { | |
61 | /* Hardware breakpoint/watchpoint data. | |
62 | The reason for them to be per-process rather than per-thread is | |
63 | due to the lack of information in the gdbserver environment; | |
64 | gdbserver is not told that whether a requested hardware | |
65 | breakpoint/watchpoint is thread specific or not, so it has to set | |
66 | each hw bp/wp for every thread in the current process. The | |
67 | higher level bp/wp management in gdb will resume a thread if a hw | |
68 | bp/wp trap is not expected for it. Since the hw bp/wp setting is | |
69 | same for each thread, it is reasonable for the data to live here. | |
70 | */ | |
71 | struct aarch64_debug_reg_state debug_reg_state; | |
72 | }; | |
73 | ||
3b53ae99 YQ |
74 | /* Return true if the size of register 0 is 8 byte. */ |
75 | ||
76 | static int | |
77 | is_64bit_tdesc (void) | |
78 | { | |
79 | struct regcache *regcache = get_thread_regcache (current_thread, 0); | |
80 | ||
81 | return register_size (regcache->tdesc, 0) == 8; | |
82 | } | |
83 | ||
421530db PL |
84 | /* Implementation of linux_target_ops method "cannot_store_register". */ |
85 | ||
176eb98c MS |
86 | static int |
87 | aarch64_cannot_store_register (int regno) | |
88 | { | |
89 | return regno >= AARCH64_NUM_REGS; | |
90 | } | |
91 | ||
421530db PL |
92 | /* Implementation of linux_target_ops method "cannot_fetch_register". */ |
93 | ||
176eb98c MS |
94 | static int |
95 | aarch64_cannot_fetch_register (int regno) | |
96 | { | |
97 | return regno >= AARCH64_NUM_REGS; | |
98 | } | |
99 | ||
100 | static void | |
101 | aarch64_fill_gregset (struct regcache *regcache, void *buf) | |
102 | { | |
103 | struct user_pt_regs *regset = buf; | |
104 | int i; | |
105 | ||
106 | for (i = 0; i < AARCH64_X_REGS_NUM; i++) | |
107 | collect_register (regcache, AARCH64_X0_REGNO + i, ®set->regs[i]); | |
108 | collect_register (regcache, AARCH64_SP_REGNO, ®set->sp); | |
109 | collect_register (regcache, AARCH64_PC_REGNO, ®set->pc); | |
110 | collect_register (regcache, AARCH64_CPSR_REGNO, ®set->pstate); | |
111 | } | |
112 | ||
113 | static void | |
114 | aarch64_store_gregset (struct regcache *regcache, const void *buf) | |
115 | { | |
116 | const struct user_pt_regs *regset = buf; | |
117 | int i; | |
118 | ||
119 | for (i = 0; i < AARCH64_X_REGS_NUM; i++) | |
120 | supply_register (regcache, AARCH64_X0_REGNO + i, ®set->regs[i]); | |
121 | supply_register (regcache, AARCH64_SP_REGNO, ®set->sp); | |
122 | supply_register (regcache, AARCH64_PC_REGNO, ®set->pc); | |
123 | supply_register (regcache, AARCH64_CPSR_REGNO, ®set->pstate); | |
124 | } | |
125 | ||
126 | static void | |
127 | aarch64_fill_fpregset (struct regcache *regcache, void *buf) | |
128 | { | |
129 | struct user_fpsimd_state *regset = buf; | |
130 | int i; | |
131 | ||
132 | for (i = 0; i < AARCH64_V_REGS_NUM; i++) | |
133 | collect_register (regcache, AARCH64_V0_REGNO + i, ®set->vregs[i]); | |
bf330350 CU |
134 | collect_register (regcache, AARCH64_FPSR_REGNO, ®set->fpsr); |
135 | collect_register (regcache, AARCH64_FPCR_REGNO, ®set->fpcr); | |
176eb98c MS |
136 | } |
137 | ||
138 | static void | |
139 | aarch64_store_fpregset (struct regcache *regcache, const void *buf) | |
140 | { | |
141 | const struct user_fpsimd_state *regset = buf; | |
142 | int i; | |
143 | ||
144 | for (i = 0; i < AARCH64_V_REGS_NUM; i++) | |
145 | supply_register (regcache, AARCH64_V0_REGNO + i, ®set->vregs[i]); | |
bf330350 CU |
146 | supply_register (regcache, AARCH64_FPSR_REGNO, ®set->fpsr); |
147 | supply_register (regcache, AARCH64_FPCR_REGNO, ®set->fpcr); | |
176eb98c MS |
148 | } |
149 | ||
176eb98c MS |
150 | /* Enable miscellaneous debugging output. The name is historical - it |
151 | was originally used to debug LinuxThreads support. */ | |
152 | extern int debug_threads; | |
153 | ||
421530db PL |
154 | /* Implementation of linux_target_ops method "get_pc". */ |
155 | ||
176eb98c MS |
156 | static CORE_ADDR |
157 | aarch64_get_pc (struct regcache *regcache) | |
158 | { | |
8a7e4587 YQ |
159 | if (register_size (regcache->tdesc, 0) == 8) |
160 | { | |
161 | unsigned long pc; | |
162 | ||
163 | collect_register_by_name (regcache, "pc", &pc); | |
164 | if (debug_threads) | |
165 | debug_printf ("stop pc is %08lx\n", pc); | |
166 | return pc; | |
167 | } | |
168 | else | |
169 | { | |
170 | unsigned int pc; | |
171 | ||
172 | collect_register_by_name (regcache, "pc", &pc); | |
173 | if (debug_threads) | |
174 | debug_printf ("stop pc is %04x\n", pc); | |
175 | return pc; | |
176 | } | |
176eb98c MS |
177 | } |
178 | ||
421530db PL |
179 | /* Implementation of linux_target_ops method "set_pc". */ |
180 | ||
176eb98c MS |
181 | static void |
182 | aarch64_set_pc (struct regcache *regcache, CORE_ADDR pc) | |
183 | { | |
8a7e4587 YQ |
184 | if (register_size (regcache->tdesc, 0) == 8) |
185 | { | |
186 | unsigned long newpc = pc; | |
187 | supply_register_by_name (regcache, "pc", &newpc); | |
188 | } | |
189 | else | |
190 | { | |
191 | unsigned int newpc = pc; | |
192 | supply_register_by_name (regcache, "pc", &newpc); | |
193 | } | |
176eb98c MS |
194 | } |
195 | ||
176eb98c MS |
196 | #define aarch64_breakpoint_len 4 |
197 | ||
37d66942 PL |
198 | /* AArch64 BRK software debug mode instruction. |
199 | This instruction needs to match gdb/aarch64-tdep.c | |
200 | (aarch64_default_breakpoint). */ | |
201 | static const gdb_byte aarch64_breakpoint[] = {0x00, 0x00, 0x20, 0xd4}; | |
176eb98c | 202 | |
421530db PL |
203 | /* Implementation of linux_target_ops method "breakpoint_at". */ |
204 | ||
176eb98c MS |
205 | static int |
206 | aarch64_breakpoint_at (CORE_ADDR where) | |
207 | { | |
37d66942 | 208 | gdb_byte insn[aarch64_breakpoint_len]; |
176eb98c | 209 | |
37d66942 PL |
210 | (*the_target->read_memory) (where, (unsigned char *) &insn, |
211 | aarch64_breakpoint_len); | |
212 | if (memcmp (insn, aarch64_breakpoint, aarch64_breakpoint_len) == 0) | |
176eb98c MS |
213 | return 1; |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
176eb98c MS |
218 | static void |
219 | aarch64_init_debug_reg_state (struct aarch64_debug_reg_state *state) | |
220 | { | |
221 | int i; | |
222 | ||
223 | for (i = 0; i < AARCH64_HBP_MAX_NUM; ++i) | |
224 | { | |
225 | state->dr_addr_bp[i] = 0; | |
226 | state->dr_ctrl_bp[i] = 0; | |
227 | state->dr_ref_count_bp[i] = 0; | |
228 | } | |
229 | ||
230 | for (i = 0; i < AARCH64_HWP_MAX_NUM; ++i) | |
231 | { | |
232 | state->dr_addr_wp[i] = 0; | |
233 | state->dr_ctrl_wp[i] = 0; | |
234 | state->dr_ref_count_wp[i] = 0; | |
235 | } | |
236 | } | |
237 | ||
176eb98c MS |
238 | /* Return the pointer to the debug register state structure in the |
239 | current process' arch-specific data area. */ | |
240 | ||
db3cb7cb | 241 | struct aarch64_debug_reg_state * |
88e2cf7e | 242 | aarch64_get_debug_reg_state (pid_t pid) |
176eb98c | 243 | { |
88e2cf7e | 244 | struct process_info *proc = find_process_pid (pid); |
176eb98c | 245 | |
fe978cb0 | 246 | return &proc->priv->arch_private->debug_reg_state; |
176eb98c MS |
247 | } |
248 | ||
421530db PL |
249 | /* Implementation of linux_target_ops method "supports_z_point_type". */ |
250 | ||
4ff0d3d8 PA |
251 | static int |
252 | aarch64_supports_z_point_type (char z_type) | |
253 | { | |
254 | switch (z_type) | |
255 | { | |
96c97461 | 256 | case Z_PACKET_SW_BP: |
6085d6f6 YQ |
257 | { |
258 | if (!extended_protocol && is_64bit_tdesc ()) | |
259 | { | |
260 | /* Only enable Z0 packet in non-multi-arch debugging. If | |
261 | extended protocol is used, don't enable Z0 packet because | |
262 | GDBserver may attach to 32-bit process. */ | |
263 | return 1; | |
264 | } | |
265 | else | |
266 | { | |
267 | /* Disable Z0 packet so that GDBserver doesn't have to handle | |
268 | different breakpoint instructions (aarch64, arm, thumb etc) | |
269 | in multi-arch debugging. */ | |
270 | return 0; | |
271 | } | |
272 | } | |
4ff0d3d8 PA |
273 | case Z_PACKET_HW_BP: |
274 | case Z_PACKET_WRITE_WP: | |
275 | case Z_PACKET_READ_WP: | |
276 | case Z_PACKET_ACCESS_WP: | |
277 | return 1; | |
278 | default: | |
4ff0d3d8 PA |
279 | return 0; |
280 | } | |
281 | } | |
282 | ||
421530db | 283 | /* Implementation of linux_target_ops method "insert_point". |
176eb98c | 284 | |
421530db PL |
285 | It actually only records the info of the to-be-inserted bp/wp; |
286 | the actual insertion will happen when threads are resumed. */ | |
176eb98c MS |
287 | |
288 | static int | |
802e8e6d PA |
289 | aarch64_insert_point (enum raw_bkpt_type type, CORE_ADDR addr, |
290 | int len, struct raw_breakpoint *bp) | |
176eb98c MS |
291 | { |
292 | int ret; | |
4ff0d3d8 | 293 | enum target_hw_bp_type targ_type; |
88e2cf7e YQ |
294 | struct aarch64_debug_reg_state *state |
295 | = aarch64_get_debug_reg_state (pid_of (current_thread)); | |
4ff0d3d8 | 296 | |
c5e92cca | 297 | if (show_debug_regs) |
176eb98c MS |
298 | fprintf (stderr, "insert_point on entry (addr=0x%08lx, len=%d)\n", |
299 | (unsigned long) addr, len); | |
300 | ||
802e8e6d PA |
301 | /* Determine the type from the raw breakpoint type. */ |
302 | targ_type = raw_bkpt_type_to_target_hw_bp_type (type); | |
176eb98c MS |
303 | |
304 | if (targ_type != hw_execute) | |
39edd165 YQ |
305 | { |
306 | if (aarch64_linux_region_ok_for_watchpoint (addr, len)) | |
307 | ret = aarch64_handle_watchpoint (targ_type, addr, len, | |
308 | 1 /* is_insert */, state); | |
309 | else | |
310 | ret = -1; | |
311 | } | |
176eb98c MS |
312 | else |
313 | ret = | |
c67ca4de YQ |
314 | aarch64_handle_breakpoint (targ_type, addr, len, 1 /* is_insert */, |
315 | state); | |
176eb98c | 316 | |
60a191ed | 317 | if (show_debug_regs) |
88e2cf7e YQ |
318 | aarch64_show_debug_reg_state (state, "insert_point", addr, len, |
319 | targ_type); | |
176eb98c MS |
320 | |
321 | return ret; | |
322 | } | |
323 | ||
421530db | 324 | /* Implementation of linux_target_ops method "remove_point". |
176eb98c | 325 | |
421530db PL |
326 | It actually only records the info of the to-be-removed bp/wp, |
327 | the actual removal will be done when threads are resumed. */ | |
176eb98c MS |
328 | |
329 | static int | |
802e8e6d PA |
330 | aarch64_remove_point (enum raw_bkpt_type type, CORE_ADDR addr, |
331 | int len, struct raw_breakpoint *bp) | |
176eb98c MS |
332 | { |
333 | int ret; | |
4ff0d3d8 | 334 | enum target_hw_bp_type targ_type; |
88e2cf7e YQ |
335 | struct aarch64_debug_reg_state *state |
336 | = aarch64_get_debug_reg_state (pid_of (current_thread)); | |
4ff0d3d8 | 337 | |
c5e92cca | 338 | if (show_debug_regs) |
176eb98c MS |
339 | fprintf (stderr, "remove_point on entry (addr=0x%08lx, len=%d)\n", |
340 | (unsigned long) addr, len); | |
341 | ||
802e8e6d PA |
342 | /* Determine the type from the raw breakpoint type. */ |
343 | targ_type = raw_bkpt_type_to_target_hw_bp_type (type); | |
176eb98c MS |
344 | |
345 | /* Set up state pointers. */ | |
346 | if (targ_type != hw_execute) | |
347 | ret = | |
c67ca4de YQ |
348 | aarch64_handle_watchpoint (targ_type, addr, len, 0 /* is_insert */, |
349 | state); | |
176eb98c MS |
350 | else |
351 | ret = | |
c67ca4de YQ |
352 | aarch64_handle_breakpoint (targ_type, addr, len, 0 /* is_insert */, |
353 | state); | |
176eb98c | 354 | |
60a191ed | 355 | if (show_debug_regs) |
88e2cf7e YQ |
356 | aarch64_show_debug_reg_state (state, "remove_point", addr, len, |
357 | targ_type); | |
176eb98c MS |
358 | |
359 | return ret; | |
360 | } | |
361 | ||
421530db | 362 | /* Implementation of linux_target_ops method "stopped_data_address". */ |
176eb98c MS |
363 | |
364 | static CORE_ADDR | |
365 | aarch64_stopped_data_address (void) | |
366 | { | |
367 | siginfo_t siginfo; | |
368 | int pid, i; | |
369 | struct aarch64_debug_reg_state *state; | |
370 | ||
0bfdf32f | 371 | pid = lwpid_of (current_thread); |
176eb98c MS |
372 | |
373 | /* Get the siginfo. */ | |
374 | if (ptrace (PTRACE_GETSIGINFO, pid, NULL, &siginfo) != 0) | |
375 | return (CORE_ADDR) 0; | |
376 | ||
377 | /* Need to be a hardware breakpoint/watchpoint trap. */ | |
378 | if (siginfo.si_signo != SIGTRAP | |
379 | || (siginfo.si_code & 0xffff) != 0x0004 /* TRAP_HWBKPT */) | |
380 | return (CORE_ADDR) 0; | |
381 | ||
382 | /* Check if the address matches any watched address. */ | |
88e2cf7e | 383 | state = aarch64_get_debug_reg_state (pid_of (current_thread)); |
176eb98c MS |
384 | for (i = aarch64_num_wp_regs - 1; i >= 0; --i) |
385 | { | |
386 | const unsigned int len = aarch64_watchpoint_length (state->dr_ctrl_wp[i]); | |
387 | const CORE_ADDR addr_trap = (CORE_ADDR) siginfo.si_addr; | |
388 | const CORE_ADDR addr_watch = state->dr_addr_wp[i]; | |
389 | if (state->dr_ref_count_wp[i] | |
390 | && DR_CONTROL_ENABLED (state->dr_ctrl_wp[i]) | |
391 | && addr_trap >= addr_watch | |
392 | && addr_trap < addr_watch + len) | |
393 | return addr_trap; | |
394 | } | |
395 | ||
396 | return (CORE_ADDR) 0; | |
397 | } | |
398 | ||
421530db | 399 | /* Implementation of linux_target_ops method "stopped_by_watchpoint". */ |
176eb98c MS |
400 | |
401 | static int | |
402 | aarch64_stopped_by_watchpoint (void) | |
403 | { | |
404 | if (aarch64_stopped_data_address () != 0) | |
405 | return 1; | |
406 | else | |
407 | return 0; | |
408 | } | |
409 | ||
410 | /* Fetch the thread-local storage pointer for libthread_db. */ | |
411 | ||
412 | ps_err_e | |
55fac6e0 | 413 | ps_get_thread_area (const struct ps_prochandle *ph, |
176eb98c MS |
414 | lwpid_t lwpid, int idx, void **base) |
415 | { | |
55fac6e0 MS |
416 | struct iovec iovec; |
417 | uint64_t reg; | |
418 | ||
419 | iovec.iov_base = ® | |
420 | iovec.iov_len = sizeof (reg); | |
421 | ||
422 | if (ptrace (PTRACE_GETREGSET, lwpid, NT_ARM_TLS, &iovec) != 0) | |
176eb98c MS |
423 | return PS_ERR; |
424 | ||
425 | /* IDX is the bias from the thread pointer to the beginning of the | |
426 | thread descriptor. It has to be subtracted due to implementation | |
427 | quirks in libthread_db. */ | |
55fac6e0 | 428 | *base = (void *) (reg - idx); |
176eb98c MS |
429 | |
430 | return PS_OK; | |
431 | } | |
432 | ||
ade90bde YQ |
433 | /* Implementation of linux_target_ops method "siginfo_fixup". */ |
434 | ||
435 | static int | |
436 | aarch64_linux_siginfo_fixup (siginfo_t *native, void *inf, int direction) | |
437 | { | |
438 | /* Is the inferior 32-bit? If so, then fixup the siginfo object. */ | |
439 | if (!is_64bit_tdesc ()) | |
440 | { | |
441 | if (direction == 0) | |
442 | aarch64_compat_siginfo_from_siginfo ((struct compat_siginfo *) inf, | |
443 | native); | |
444 | else | |
445 | aarch64_siginfo_from_compat_siginfo (native, | |
446 | (struct compat_siginfo *) inf); | |
447 | ||
448 | return 1; | |
449 | } | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
421530db | 454 | /* Implementation of linux_target_ops method "linux_new_process". */ |
176eb98c MS |
455 | |
456 | static struct arch_process_info * | |
457 | aarch64_linux_new_process (void) | |
458 | { | |
8d749320 | 459 | struct arch_process_info *info = XCNEW (struct arch_process_info); |
176eb98c MS |
460 | |
461 | aarch64_init_debug_reg_state (&info->debug_reg_state); | |
462 | ||
463 | return info; | |
464 | } | |
465 | ||
421530db PL |
466 | /* Implementation of linux_target_ops method "linux_new_fork". */ |
467 | ||
3a8a0396 DB |
468 | static void |
469 | aarch64_linux_new_fork (struct process_info *parent, | |
470 | struct process_info *child) | |
471 | { | |
472 | /* These are allocated by linux_add_process. */ | |
61a7418c DB |
473 | gdb_assert (parent->priv != NULL |
474 | && parent->priv->arch_private != NULL); | |
475 | gdb_assert (child->priv != NULL | |
476 | && child->priv->arch_private != NULL); | |
3a8a0396 DB |
477 | |
478 | /* Linux kernel before 2.6.33 commit | |
479 | 72f674d203cd230426437cdcf7dd6f681dad8b0d | |
480 | will inherit hardware debug registers from parent | |
481 | on fork/vfork/clone. Newer Linux kernels create such tasks with | |
482 | zeroed debug registers. | |
483 | ||
484 | GDB core assumes the child inherits the watchpoints/hw | |
485 | breakpoints of the parent, and will remove them all from the | |
486 | forked off process. Copy the debug registers mirrors into the | |
487 | new process so that all breakpoints and watchpoints can be | |
488 | removed together. The debug registers mirror will become zeroed | |
489 | in the end before detaching the forked off process, thus making | |
490 | this compatible with older Linux kernels too. */ | |
491 | ||
61a7418c | 492 | *child->priv->arch_private = *parent->priv->arch_private; |
3a8a0396 DB |
493 | } |
494 | ||
3b53ae99 YQ |
495 | /* Return the right target description according to the ELF file of |
496 | current thread. */ | |
497 | ||
498 | static const struct target_desc * | |
499 | aarch64_linux_read_description (void) | |
500 | { | |
501 | unsigned int machine; | |
502 | int is_elf64; | |
503 | int tid; | |
504 | ||
505 | tid = lwpid_of (current_thread); | |
506 | ||
507 | is_elf64 = linux_pid_exe_is_elf_64_file (tid, &machine); | |
508 | ||
509 | if (is_elf64) | |
510 | return tdesc_aarch64; | |
511 | else | |
512 | return tdesc_arm_with_neon; | |
513 | } | |
514 | ||
421530db PL |
515 | /* Implementation of linux_target_ops method "arch_setup". */ |
516 | ||
176eb98c MS |
517 | static void |
518 | aarch64_arch_setup (void) | |
519 | { | |
3b53ae99 | 520 | current_process ()->tdesc = aarch64_linux_read_description (); |
176eb98c | 521 | |
af1b22f3 | 522 | aarch64_linux_get_debug_reg_capacity (lwpid_of (current_thread)); |
176eb98c MS |
523 | } |
524 | ||
3aee8918 | 525 | static struct regset_info aarch64_regsets[] = |
176eb98c MS |
526 | { |
527 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_PRSTATUS, | |
528 | sizeof (struct user_pt_regs), GENERAL_REGS, | |
529 | aarch64_fill_gregset, aarch64_store_gregset }, | |
530 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_FPREGSET, | |
531 | sizeof (struct user_fpsimd_state), FP_REGS, | |
532 | aarch64_fill_fpregset, aarch64_store_fpregset | |
533 | }, | |
534 | { 0, 0, 0, -1, -1, NULL, NULL } | |
535 | }; | |
536 | ||
3aee8918 PA |
537 | static struct regsets_info aarch64_regsets_info = |
538 | { | |
539 | aarch64_regsets, /* regsets */ | |
540 | 0, /* num_regsets */ | |
541 | NULL, /* disabled_regsets */ | |
542 | }; | |
543 | ||
3b53ae99 | 544 | static struct regs_info regs_info_aarch64 = |
3aee8918 PA |
545 | { |
546 | NULL, /* regset_bitmap */ | |
c2d65f38 | 547 | NULL, /* usrregs */ |
3aee8918 PA |
548 | &aarch64_regsets_info, |
549 | }; | |
550 | ||
421530db PL |
551 | /* Implementation of linux_target_ops method "regs_info". */ |
552 | ||
3aee8918 PA |
553 | static const struct regs_info * |
554 | aarch64_regs_info (void) | |
555 | { | |
3b53ae99 YQ |
556 | if (is_64bit_tdesc ()) |
557 | return ®s_info_aarch64; | |
558 | else | |
559 | return ®s_info_aarch32; | |
3aee8918 PA |
560 | } |
561 | ||
7671bf47 PL |
562 | /* Implementation of linux_target_ops method "supports_tracepoints". */ |
563 | ||
564 | static int | |
565 | aarch64_supports_tracepoints (void) | |
566 | { | |
524b57e6 YQ |
567 | if (current_thread == NULL) |
568 | return 1; | |
569 | else | |
570 | { | |
571 | /* We don't support tracepoints on aarch32 now. */ | |
572 | return is_64bit_tdesc (); | |
573 | } | |
7671bf47 PL |
574 | } |
575 | ||
d1d0aea1 PL |
576 | /* Implementation of linux_target_ops method "supports_range_stepping". */ |
577 | ||
578 | static int | |
579 | aarch64_supports_range_stepping (void) | |
580 | { | |
581 | return 1; | |
582 | } | |
583 | ||
176eb98c MS |
584 | struct linux_target_ops the_low_target = |
585 | { | |
586 | aarch64_arch_setup, | |
3aee8918 | 587 | aarch64_regs_info, |
176eb98c MS |
588 | aarch64_cannot_fetch_register, |
589 | aarch64_cannot_store_register, | |
421530db | 590 | NULL, /* fetch_register */ |
176eb98c MS |
591 | aarch64_get_pc, |
592 | aarch64_set_pc, | |
593 | (const unsigned char *) &aarch64_breakpoint, | |
594 | aarch64_breakpoint_len, | |
421530db PL |
595 | NULL, /* breakpoint_reinsert_addr */ |
596 | 0, /* decr_pc_after_break */ | |
176eb98c | 597 | aarch64_breakpoint_at, |
802e8e6d | 598 | aarch64_supports_z_point_type, |
176eb98c MS |
599 | aarch64_insert_point, |
600 | aarch64_remove_point, | |
601 | aarch64_stopped_by_watchpoint, | |
602 | aarch64_stopped_data_address, | |
421530db PL |
603 | NULL, /* collect_ptrace_register */ |
604 | NULL, /* supply_ptrace_register */ | |
ade90bde | 605 | aarch64_linux_siginfo_fixup, |
176eb98c MS |
606 | aarch64_linux_new_process, |
607 | aarch64_linux_new_thread, | |
3a8a0396 | 608 | aarch64_linux_new_fork, |
176eb98c | 609 | aarch64_linux_prepare_to_resume, |
421530db | 610 | NULL, /* process_qsupported */ |
7671bf47 | 611 | aarch64_supports_tracepoints, |
d1d0aea1 PL |
612 | NULL, /* get_thread_area */ |
613 | NULL, /* install_fast_tracepoint_jump_pad */ | |
614 | NULL, /* emit_ops */ | |
615 | NULL, /* get_min_fast_tracepoint_insn_len */ | |
616 | aarch64_supports_range_stepping, | |
176eb98c | 617 | }; |
3aee8918 PA |
618 | |
619 | void | |
620 | initialize_low_arch (void) | |
621 | { | |
622 | init_registers_aarch64 (); | |
623 | ||
3b53ae99 YQ |
624 | initialize_low_arch_aarch32 (); |
625 | ||
3aee8918 PA |
626 | initialize_regsets_info (&aarch64_regsets_info); |
627 | } |