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a4b6fc86 | 1 | /* Native-dependent code for GNU/Linux x86-64. |
0a65a603 | 2 | |
32d0add0 | 3 | Copyright (C) 2001-2015 Free Software Foundation, Inc. |
53e95fcf JS |
4 | Contributed by Jiri Smid, SuSE Labs. |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
53e95fcf JS |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
53e95fcf JS |
20 | |
21 | #include "defs.h" | |
22 | #include "inferior.h" | |
53e95fcf | 23 | #include "regcache.h" |
a055a187 | 24 | #include "elf/common.h" |
35782f14 | 25 | #include <sys/uio.h> |
53e95fcf | 26 | #include <sys/ptrace.h> |
c43af07c | 27 | #include <asm/prctl.h> |
33a0a2ac | 28 | #include <sys/reg.h> |
c4f35dd8 | 29 | #include "gregset.h" |
3116063b | 30 | #include "gdb_proc_service.h" |
c4f35dd8 | 31 | |
3116063b GB |
32 | #include "amd64-nat.h" |
33 | #include "linux-nat.h" | |
9c1488cb | 34 | #include "amd64-tdep.h" |
3116063b | 35 | #include "amd64-linux-tdep.h" |
60fac5b8 | 36 | #include "i386-linux-tdep.h" |
df7e5265 | 37 | #include "x86-xstate.h" |
a055a187 | 38 | |
040baaf6 | 39 | #include "x86-linux-nat.h" |
ca9b78ce | 40 | #include "nat/linux-ptrace.h" |
60fac5b8 | 41 | |
60fac5b8 MK |
42 | /* Mapping between the general-purpose registers in GNU/Linux x86-64 |
43 | `struct user' format and GDB's register cache layout for GNU/Linux | |
44 | i386. | |
45 | ||
46 | Note that most GNU/Linux x86-64 registers are 64-bit, while the | |
47 | GNU/Linux i386 registers are all 32-bit, but since we're | |
48 | little-endian we get away with that. */ | |
49 | ||
50 | /* From <sys/reg.h> on GNU/Linux i386. */ | |
430eaf2e | 51 | static int amd64_linux_gregset32_reg_offset[] = |
60fac5b8 | 52 | { |
f5859b4d MK |
53 | RAX * 8, RCX * 8, /* %eax, %ecx */ |
54 | RDX * 8, RBX * 8, /* %edx, %ebx */ | |
55 | RSP * 8, RBP * 8, /* %esp, %ebp */ | |
56 | RSI * 8, RDI * 8, /* %esi, %edi */ | |
57 | RIP * 8, EFLAGS * 8, /* %eip, %eflags */ | |
58 | CS * 8, SS * 8, /* %cs, %ss */ | |
59 | DS * 8, ES * 8, /* %ds, %es */ | |
60 | FS * 8, GS * 8, /* %fs, %gs */ | |
60fac5b8 MK |
61 | -1, -1, -1, -1, -1, -1, -1, -1, |
62 | -1, -1, -1, -1, -1, -1, -1, -1, | |
63 | -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
a055a187 | 64 | -1, -1, -1, -1, -1, -1, -1, -1, |
01f9f808 MS |
65 | -1, -1, -1, -1, /* MPX registers BND0 ... BND3. */ |
66 | -1, -1, /* MPX registers BNDCFGU, BNDSTATUS. */ | |
67 | -1, -1, -1, -1, -1, -1, -1, -1, /* k0 ... k7 (AVX512) */ | |
68 | -1, -1, -1, -1, -1, -1, -1, -1, /* zmm0 ... zmm7 (AVX512) */ | |
69 | ORIG_RAX * 8 /* "orig_eax" */ | |
60fac5b8 | 70 | }; |
53e95fcf JS |
71 | \f |
72 | ||
73 | /* Transfering the general-purpose registers between GDB, inferiors | |
74 | and core files. */ | |
75 | ||
60fac5b8 | 76 | /* Fill GDB's register cache with the general-purpose register values |
53e95fcf JS |
77 | in *GREGSETP. */ |
78 | ||
79 | void | |
7f7fe91e | 80 | supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp) |
53e95fcf | 81 | { |
7f7fe91e | 82 | amd64_supply_native_gregset (regcache, gregsetp, -1); |
53e95fcf JS |
83 | } |
84 | ||
60fac5b8 MK |
85 | /* Fill register REGNUM (if it is a general-purpose register) in |
86 | *GREGSETP with the value in GDB's register cache. If REGNUM is -1, | |
53e95fcf JS |
87 | do this for all registers. */ |
88 | ||
89 | void | |
7f7fe91e UW |
90 | fill_gregset (const struct regcache *regcache, |
91 | elf_gregset_t *gregsetp, int regnum) | |
53e95fcf | 92 | { |
7f7fe91e | 93 | amd64_collect_native_gregset (regcache, gregsetp, regnum); |
53e95fcf JS |
94 | } |
95 | ||
53e95fcf JS |
96 | /* Transfering floating-point registers between GDB, inferiors and cores. */ |
97 | ||
60fac5b8 | 98 | /* Fill GDB's register cache with the floating-point and SSE register |
c4f35dd8 | 99 | values in *FPREGSETP. */ |
53e95fcf JS |
100 | |
101 | void | |
7f7fe91e | 102 | supply_fpregset (struct regcache *regcache, const elf_fpregset_t *fpregsetp) |
53e95fcf | 103 | { |
7f7fe91e | 104 | amd64_supply_fxsave (regcache, -1, fpregsetp); |
53e95fcf JS |
105 | } |
106 | ||
8dda9770 | 107 | /* Fill register REGNUM (if it is a floating-point or SSE register) in |
60fac5b8 | 108 | *FPREGSETP with the value in GDB's register cache. If REGNUM is |
c4f35dd8 | 109 | -1, do this for all registers. */ |
53e95fcf JS |
110 | |
111 | void | |
7f7fe91e UW |
112 | fill_fpregset (const struct regcache *regcache, |
113 | elf_fpregset_t *fpregsetp, int regnum) | |
53e95fcf | 114 | { |
7f7fe91e | 115 | amd64_collect_fxsave (regcache, regnum, fpregsetp); |
53e95fcf | 116 | } |
53e95fcf JS |
117 | \f |
118 | ||
119 | /* Transferring arbitrary registers between GDB and inferior. */ | |
120 | ||
60fac5b8 | 121 | /* Fetch register REGNUM from the child process. If REGNUM is -1, do |
53e95fcf JS |
122 | this for all registers (including the floating point and SSE |
123 | registers). */ | |
124 | ||
10d6c8cd | 125 | static void |
28439f5e PA |
126 | amd64_linux_fetch_inferior_registers (struct target_ops *ops, |
127 | struct regcache *regcache, int regnum) | |
53e95fcf | 128 | { |
f8028488 | 129 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
53e95fcf JS |
130 | int tid; |
131 | ||
a4b6fc86 | 132 | /* GNU/Linux LWP ID's are process ID's. */ |
dfd4cc63 | 133 | tid = ptid_get_lwp (inferior_ptid); |
c4f35dd8 | 134 | if (tid == 0) |
dfd4cc63 | 135 | tid = ptid_get_pid (inferior_ptid); /* Not a threaded program. */ |
53e95fcf | 136 | |
f8028488 | 137 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 138 | { |
99679982 MK |
139 | elf_gregset_t regs; |
140 | ||
141 | if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) | |
edefbb7c | 142 | perror_with_name (_("Couldn't get registers")); |
99679982 | 143 | |
56be3814 | 144 | amd64_supply_native_gregset (regcache, ®s, -1); |
60fac5b8 MK |
145 | if (regnum != -1) |
146 | return; | |
53e95fcf JS |
147 | } |
148 | ||
f8028488 | 149 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 150 | { |
99679982 | 151 | elf_fpregset_t fpregs; |
53e95fcf | 152 | |
0bdb2f78 | 153 | if (have_ptrace_getregset == TRIBOOL_TRUE) |
a055a187 | 154 | { |
df7e5265 | 155 | char xstateregs[X86_XSTATE_MAX_SIZE]; |
a055a187 L |
156 | struct iovec iov; |
157 | ||
158 | iov.iov_base = xstateregs; | |
159 | iov.iov_len = sizeof (xstateregs); | |
160 | if (ptrace (PTRACE_GETREGSET, tid, | |
161 | (unsigned int) NT_X86_XSTATE, (long) &iov) < 0) | |
162 | perror_with_name (_("Couldn't get extended state status")); | |
99679982 | 163 | |
a055a187 L |
164 | amd64_supply_xsave (regcache, -1, xstateregs); |
165 | } | |
166 | else | |
167 | { | |
168 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) | |
169 | perror_with_name (_("Couldn't get floating point status")); | |
170 | ||
171 | amd64_supply_fxsave (regcache, -1, &fpregs); | |
172 | } | |
99679982 | 173 | } |
53e95fcf JS |
174 | } |
175 | ||
60fac5b8 MK |
176 | /* Store register REGNUM back into the child process. If REGNUM is |
177 | -1, do this for all registers (including the floating-point and SSE | |
53e95fcf | 178 | registers). */ |
c4f35dd8 | 179 | |
10d6c8cd | 180 | static void |
28439f5e PA |
181 | amd64_linux_store_inferior_registers (struct target_ops *ops, |
182 | struct regcache *regcache, int regnum) | |
53e95fcf | 183 | { |
f8028488 | 184 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
53e95fcf JS |
185 | int tid; |
186 | ||
a4b6fc86 | 187 | /* GNU/Linux LWP ID's are process ID's. */ |
dfd4cc63 | 188 | tid = ptid_get_lwp (inferior_ptid); |
c4f35dd8 | 189 | if (tid == 0) |
dfd4cc63 | 190 | tid = ptid_get_pid (inferior_ptid); /* Not a threaded program. */ |
53e95fcf | 191 | |
f8028488 | 192 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 193 | { |
99679982 MK |
194 | elf_gregset_t regs; |
195 | ||
196 | if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) | |
edefbb7c | 197 | perror_with_name (_("Couldn't get registers")); |
99679982 | 198 | |
56be3814 | 199 | amd64_collect_native_gregset (regcache, ®s, regnum); |
99679982 MK |
200 | |
201 | if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0) | |
edefbb7c | 202 | perror_with_name (_("Couldn't write registers")); |
99679982 | 203 | |
60fac5b8 MK |
204 | if (regnum != -1) |
205 | return; | |
53e95fcf JS |
206 | } |
207 | ||
f8028488 | 208 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 209 | { |
99679982 MK |
210 | elf_fpregset_t fpregs; |
211 | ||
0bdb2f78 | 212 | if (have_ptrace_getregset == TRIBOOL_TRUE) |
a055a187 | 213 | { |
df7e5265 | 214 | char xstateregs[X86_XSTATE_MAX_SIZE]; |
a055a187 L |
215 | struct iovec iov; |
216 | ||
217 | iov.iov_base = xstateregs; | |
218 | iov.iov_len = sizeof (xstateregs); | |
219 | if (ptrace (PTRACE_GETREGSET, tid, | |
220 | (unsigned int) NT_X86_XSTATE, (long) &iov) < 0) | |
221 | perror_with_name (_("Couldn't get extended state status")); | |
99679982 | 222 | |
a055a187 L |
223 | amd64_collect_xsave (regcache, regnum, xstateregs, 0); |
224 | ||
225 | if (ptrace (PTRACE_SETREGSET, tid, | |
226 | (unsigned int) NT_X86_XSTATE, (long) &iov) < 0) | |
227 | perror_with_name (_("Couldn't write extended state status")); | |
228 | } | |
229 | else | |
230 | { | |
231 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) | |
232 | perror_with_name (_("Couldn't get floating point status")); | |
99679982 | 233 | |
a055a187 | 234 | amd64_collect_fxsave (regcache, regnum, &fpregs); |
99679982 | 235 | |
a055a187 L |
236 | if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0) |
237 | perror_with_name (_("Couldn't write floating point status")); | |
238 | } | |
53e95fcf | 239 | } |
53e95fcf JS |
240 | } |
241 | \f | |
1aa7e42c | 242 | |
50d71875 AC |
243 | /* This function is called by libthread_db as part of its handling of |
244 | a request for a thread's local storage address. */ | |
245 | ||
5bca7895 | 246 | ps_err_e |
c43af07c EZ |
247 | ps_get_thread_area (const struct ps_prochandle *ph, |
248 | lwpid_t lwpid, int idx, void **base) | |
249 | { | |
f5656ead | 250 | if (gdbarch_bfd_arch_info (target_gdbarch ())->bits_per_word == 32) |
50d71875 | 251 | { |
8c420b8d GB |
252 | unsigned int base_addr; |
253 | ps_err_e result; | |
254 | ||
255 | result = x86_linux_get_thread_area (lwpid, (void *) (long) idx, | |
256 | &base_addr); | |
257 | if (result == PS_OK) | |
258 | { | |
259 | /* Extend the value to 64 bits. Here it's assumed that | |
260 | a "long" and a "void *" are the same. */ | |
261 | (*base) = (void *) (long) base_addr; | |
262 | } | |
263 | return result; | |
50d71875 AC |
264 | } |
265 | else | |
266 | { | |
267 | /* This definition comes from prctl.h, but some kernels may not | |
268 | have it. */ | |
c43af07c EZ |
269 | #ifndef PTRACE_ARCH_PRCTL |
270 | #define PTRACE_ARCH_PRCTL 30 | |
271 | #endif | |
50d71875 AC |
272 | /* FIXME: ezannoni-2003-07-09 see comment above about include |
273 | file order. We could be getting bogus values for these two. */ | |
274 | gdb_assert (FS < ELF_NGREG); | |
275 | gdb_assert (GS < ELF_NGREG); | |
276 | switch (idx) | |
277 | { | |
278 | case FS: | |
6fea9e18 L |
279 | #ifdef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE |
280 | { | |
281 | /* PTRACE_ARCH_PRCTL is obsolete since 2.6.25, where the | |
282 | fs_base and gs_base fields of user_regs_struct can be | |
283 | used directly. */ | |
284 | unsigned long fs; | |
285 | errno = 0; | |
286 | fs = ptrace (PTRACE_PEEKUSER, lwpid, | |
287 | offsetof (struct user_regs_struct, fs_base), 0); | |
288 | if (errno == 0) | |
289 | { | |
290 | *base = (void *) fs; | |
291 | return PS_OK; | |
292 | } | |
293 | } | |
294 | #endif | |
50d71875 AC |
295 | if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_FS) == 0) |
296 | return PS_OK; | |
297 | break; | |
298 | case GS: | |
6fea9e18 L |
299 | #ifdef HAVE_STRUCT_USER_REGS_STRUCT_GS_BASE |
300 | { | |
301 | unsigned long gs; | |
302 | errno = 0; | |
303 | gs = ptrace (PTRACE_PEEKUSER, lwpid, | |
304 | offsetof (struct user_regs_struct, gs_base), 0); | |
305 | if (errno == 0) | |
306 | { | |
307 | *base = (void *) gs; | |
308 | return PS_OK; | |
309 | } | |
310 | } | |
311 | #endif | |
50d71875 AC |
312 | if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_GS) == 0) |
313 | return PS_OK; | |
314 | break; | |
315 | default: /* Should not happen. */ | |
316 | return PS_BADADDR; | |
317 | } | |
c43af07c | 318 | } |
b6d42148 | 319 | return PS_ERR; /* ptrace failed. */ |
c43af07c | 320 | } |
5bca7895 | 321 | \f |
c43af07c | 322 | |
5b009018 PA |
323 | /* When GDB is built as a 64-bit application on linux, the |
324 | PTRACE_GETSIGINFO data is always presented in 64-bit layout. Since | |
325 | debugging a 32-bit inferior with a 64-bit GDB should look the same | |
326 | as debugging it with a 32-bit GDB, we do the 32-bit <-> 64-bit | |
327 | conversion in-place ourselves. */ | |
328 | ||
329 | /* These types below (compat_*) define a siginfo type that is layout | |
330 | compatible with the siginfo type exported by the 32-bit userspace | |
331 | support. */ | |
332 | ||
333 | typedef int compat_int_t; | |
334 | typedef unsigned int compat_uptr_t; | |
335 | ||
336 | typedef int compat_time_t; | |
337 | typedef int compat_timer_t; | |
338 | typedef int compat_clock_t; | |
339 | ||
340 | struct compat_timeval | |
341 | { | |
342 | compat_time_t tv_sec; | |
343 | int tv_usec; | |
344 | }; | |
345 | ||
346 | typedef union compat_sigval | |
347 | { | |
348 | compat_int_t sival_int; | |
349 | compat_uptr_t sival_ptr; | |
350 | } compat_sigval_t; | |
351 | ||
352 | typedef struct compat_siginfo | |
353 | { | |
354 | int si_signo; | |
355 | int si_errno; | |
356 | int si_code; | |
357 | ||
358 | union | |
359 | { | |
360 | int _pad[((128 / sizeof (int)) - 3)]; | |
361 | ||
362 | /* kill() */ | |
363 | struct | |
364 | { | |
365 | unsigned int _pid; | |
366 | unsigned int _uid; | |
367 | } _kill; | |
368 | ||
369 | /* POSIX.1b timers */ | |
370 | struct | |
371 | { | |
372 | compat_timer_t _tid; | |
373 | int _overrun; | |
374 | compat_sigval_t _sigval; | |
375 | } _timer; | |
376 | ||
377 | /* POSIX.1b signals */ | |
378 | struct | |
379 | { | |
380 | unsigned int _pid; | |
381 | unsigned int _uid; | |
382 | compat_sigval_t _sigval; | |
383 | } _rt; | |
384 | ||
385 | /* SIGCHLD */ | |
386 | struct | |
387 | { | |
388 | unsigned int _pid; | |
389 | unsigned int _uid; | |
390 | int _status; | |
391 | compat_clock_t _utime; | |
392 | compat_clock_t _stime; | |
393 | } _sigchld; | |
394 | ||
395 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
396 | struct | |
397 | { | |
398 | unsigned int _addr; | |
399 | } _sigfault; | |
400 | ||
401 | /* SIGPOLL */ | |
402 | struct | |
403 | { | |
404 | int _band; | |
405 | int _fd; | |
406 | } _sigpoll; | |
407 | } _sifields; | |
408 | } compat_siginfo_t; | |
409 | ||
ba224c70 L |
410 | /* For x32, clock_t in _sigchld is 64bit aligned at 4 bytes. */ |
411 | typedef struct compat_x32_clock | |
412 | { | |
413 | int lower; | |
414 | int upper; | |
415 | } compat_x32_clock_t; | |
416 | ||
417 | typedef struct compat_x32_siginfo | |
418 | { | |
419 | int si_signo; | |
420 | int si_errno; | |
421 | int si_code; | |
422 | ||
423 | union | |
424 | { | |
425 | int _pad[((128 / sizeof (int)) - 3)]; | |
426 | ||
427 | /* kill() */ | |
428 | struct | |
429 | { | |
430 | unsigned int _pid; | |
431 | unsigned int _uid; | |
432 | } _kill; | |
433 | ||
434 | /* POSIX.1b timers */ | |
435 | struct | |
436 | { | |
437 | compat_timer_t _tid; | |
438 | int _overrun; | |
439 | compat_sigval_t _sigval; | |
440 | } _timer; | |
441 | ||
442 | /* POSIX.1b signals */ | |
443 | struct | |
444 | { | |
445 | unsigned int _pid; | |
446 | unsigned int _uid; | |
447 | compat_sigval_t _sigval; | |
448 | } _rt; | |
449 | ||
450 | /* SIGCHLD */ | |
451 | struct | |
452 | { | |
453 | unsigned int _pid; | |
454 | unsigned int _uid; | |
455 | int _status; | |
456 | compat_x32_clock_t _utime; | |
457 | compat_x32_clock_t _stime; | |
458 | } _sigchld; | |
459 | ||
460 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
461 | struct | |
462 | { | |
463 | unsigned int _addr; | |
464 | } _sigfault; | |
465 | ||
466 | /* SIGPOLL */ | |
467 | struct | |
468 | { | |
469 | int _band; | |
470 | int _fd; | |
471 | } _sigpoll; | |
472 | } _sifields; | |
473 | } compat_x32_siginfo_t; | |
474 | ||
5b009018 PA |
475 | #define cpt_si_pid _sifields._kill._pid |
476 | #define cpt_si_uid _sifields._kill._uid | |
477 | #define cpt_si_timerid _sifields._timer._tid | |
478 | #define cpt_si_overrun _sifields._timer._overrun | |
479 | #define cpt_si_status _sifields._sigchld._status | |
480 | #define cpt_si_utime _sifields._sigchld._utime | |
481 | #define cpt_si_stime _sifields._sigchld._stime | |
482 | #define cpt_si_ptr _sifields._rt._sigval.sival_ptr | |
483 | #define cpt_si_addr _sifields._sigfault._addr | |
484 | #define cpt_si_band _sifields._sigpoll._band | |
485 | #define cpt_si_fd _sifields._sigpoll._fd | |
486 | ||
14064aa2 DE |
487 | /* glibc at least up to 2.3.2 doesn't have si_timerid, si_overrun. |
488 | In their place is si_timer1,si_timer2. */ | |
489 | #ifndef si_timerid | |
490 | #define si_timerid si_timer1 | |
491 | #endif | |
492 | #ifndef si_overrun | |
493 | #define si_overrun si_timer2 | |
494 | #endif | |
495 | ||
5b009018 PA |
496 | static void |
497 | compat_siginfo_from_siginfo (compat_siginfo_t *to, siginfo_t *from) | |
498 | { | |
499 | memset (to, 0, sizeof (*to)); | |
500 | ||
501 | to->si_signo = from->si_signo; | |
502 | to->si_errno = from->si_errno; | |
503 | to->si_code = from->si_code; | |
504 | ||
b53a1623 | 505 | if (to->si_code == SI_TIMER) |
5b009018 | 506 | { |
b53a1623 PA |
507 | to->cpt_si_timerid = from->si_timerid; |
508 | to->cpt_si_overrun = from->si_overrun; | |
5b009018 PA |
509 | to->cpt_si_ptr = (intptr_t) from->si_ptr; |
510 | } | |
511 | else if (to->si_code == SI_USER) | |
512 | { | |
513 | to->cpt_si_pid = from->si_pid; | |
514 | to->cpt_si_uid = from->si_uid; | |
515 | } | |
b53a1623 | 516 | else if (to->si_code < 0) |
5b009018 | 517 | { |
b53a1623 PA |
518 | to->cpt_si_pid = from->si_pid; |
519 | to->cpt_si_uid = from->si_uid; | |
5b009018 PA |
520 | to->cpt_si_ptr = (intptr_t) from->si_ptr; |
521 | } | |
522 | else | |
523 | { | |
524 | switch (to->si_signo) | |
525 | { | |
526 | case SIGCHLD: | |
527 | to->cpt_si_pid = from->si_pid; | |
528 | to->cpt_si_uid = from->si_uid; | |
529 | to->cpt_si_status = from->si_status; | |
530 | to->cpt_si_utime = from->si_utime; | |
531 | to->cpt_si_stime = from->si_stime; | |
532 | break; | |
533 | case SIGILL: | |
534 | case SIGFPE: | |
535 | case SIGSEGV: | |
536 | case SIGBUS: | |
537 | to->cpt_si_addr = (intptr_t) from->si_addr; | |
538 | break; | |
539 | case SIGPOLL: | |
540 | to->cpt_si_band = from->si_band; | |
541 | to->cpt_si_fd = from->si_fd; | |
542 | break; | |
543 | default: | |
544 | to->cpt_si_pid = from->si_pid; | |
545 | to->cpt_si_uid = from->si_uid; | |
546 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
547 | break; | |
548 | } | |
549 | } | |
550 | } | |
551 | ||
552 | static void | |
553 | siginfo_from_compat_siginfo (siginfo_t *to, compat_siginfo_t *from) | |
554 | { | |
555 | memset (to, 0, sizeof (*to)); | |
556 | ||
557 | to->si_signo = from->si_signo; | |
558 | to->si_errno = from->si_errno; | |
559 | to->si_code = from->si_code; | |
560 | ||
b53a1623 | 561 | if (to->si_code == SI_TIMER) |
5b009018 | 562 | { |
b53a1623 PA |
563 | to->si_timerid = from->cpt_si_timerid; |
564 | to->si_overrun = from->cpt_si_overrun; | |
5b009018 PA |
565 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; |
566 | } | |
567 | else if (to->si_code == SI_USER) | |
568 | { | |
569 | to->si_pid = from->cpt_si_pid; | |
570 | to->si_uid = from->cpt_si_uid; | |
571 | } | |
b53a1623 | 572 | if (to->si_code < 0) |
5b009018 | 573 | { |
b53a1623 PA |
574 | to->si_pid = from->cpt_si_pid; |
575 | to->si_uid = from->cpt_si_uid; | |
5b009018 PA |
576 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; |
577 | } | |
578 | else | |
579 | { | |
580 | switch (to->si_signo) | |
581 | { | |
582 | case SIGCHLD: | |
583 | to->si_pid = from->cpt_si_pid; | |
584 | to->si_uid = from->cpt_si_uid; | |
585 | to->si_status = from->cpt_si_status; | |
586 | to->si_utime = from->cpt_si_utime; | |
587 | to->si_stime = from->cpt_si_stime; | |
588 | break; | |
589 | case SIGILL: | |
590 | case SIGFPE: | |
591 | case SIGSEGV: | |
592 | case SIGBUS: | |
593 | to->si_addr = (void *) (intptr_t) from->cpt_si_addr; | |
594 | break; | |
595 | case SIGPOLL: | |
596 | to->si_band = from->cpt_si_band; | |
597 | to->si_fd = from->cpt_si_fd; | |
598 | break; | |
599 | default: | |
600 | to->si_pid = from->cpt_si_pid; | |
601 | to->si_uid = from->cpt_si_uid; | |
602 | to->si_ptr = (void* ) (intptr_t) from->cpt_si_ptr; | |
603 | break; | |
604 | } | |
605 | } | |
606 | } | |
607 | ||
ba224c70 L |
608 | static void |
609 | compat_x32_siginfo_from_siginfo (compat_x32_siginfo_t *to, | |
610 | siginfo_t *from) | |
611 | { | |
612 | memset (to, 0, sizeof (*to)); | |
613 | ||
614 | to->si_signo = from->si_signo; | |
615 | to->si_errno = from->si_errno; | |
616 | to->si_code = from->si_code; | |
617 | ||
618 | if (to->si_code == SI_TIMER) | |
619 | { | |
620 | to->cpt_si_timerid = from->si_timerid; | |
621 | to->cpt_si_overrun = from->si_overrun; | |
622 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
623 | } | |
624 | else if (to->si_code == SI_USER) | |
625 | { | |
626 | to->cpt_si_pid = from->si_pid; | |
627 | to->cpt_si_uid = from->si_uid; | |
628 | } | |
629 | else if (to->si_code < 0) | |
630 | { | |
631 | to->cpt_si_pid = from->si_pid; | |
632 | to->cpt_si_uid = from->si_uid; | |
633 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
634 | } | |
635 | else | |
636 | { | |
637 | switch (to->si_signo) | |
638 | { | |
639 | case SIGCHLD: | |
640 | to->cpt_si_pid = from->si_pid; | |
641 | to->cpt_si_uid = from->si_uid; | |
642 | to->cpt_si_status = from->si_status; | |
643 | memcpy (&to->cpt_si_utime, &from->si_utime, | |
644 | sizeof (to->cpt_si_utime)); | |
645 | memcpy (&to->cpt_si_stime, &from->si_stime, | |
646 | sizeof (to->cpt_si_stime)); | |
647 | break; | |
648 | case SIGILL: | |
649 | case SIGFPE: | |
650 | case SIGSEGV: | |
651 | case SIGBUS: | |
652 | to->cpt_si_addr = (intptr_t) from->si_addr; | |
653 | break; | |
654 | case SIGPOLL: | |
655 | to->cpt_si_band = from->si_band; | |
656 | to->cpt_si_fd = from->si_fd; | |
657 | break; | |
658 | default: | |
659 | to->cpt_si_pid = from->si_pid; | |
660 | to->cpt_si_uid = from->si_uid; | |
661 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
662 | break; | |
663 | } | |
664 | } | |
665 | } | |
666 | ||
667 | static void | |
668 | siginfo_from_compat_x32_siginfo (siginfo_t *to, | |
669 | compat_x32_siginfo_t *from) | |
670 | { | |
671 | memset (to, 0, sizeof (*to)); | |
672 | ||
673 | to->si_signo = from->si_signo; | |
674 | to->si_errno = from->si_errno; | |
675 | to->si_code = from->si_code; | |
676 | ||
677 | if (to->si_code == SI_TIMER) | |
678 | { | |
679 | to->si_timerid = from->cpt_si_timerid; | |
680 | to->si_overrun = from->cpt_si_overrun; | |
681 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; | |
682 | } | |
683 | else if (to->si_code == SI_USER) | |
684 | { | |
685 | to->si_pid = from->cpt_si_pid; | |
686 | to->si_uid = from->cpt_si_uid; | |
687 | } | |
688 | if (to->si_code < 0) | |
689 | { | |
690 | to->si_pid = from->cpt_si_pid; | |
691 | to->si_uid = from->cpt_si_uid; | |
692 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; | |
693 | } | |
694 | else | |
695 | { | |
696 | switch (to->si_signo) | |
697 | { | |
698 | case SIGCHLD: | |
699 | to->si_pid = from->cpt_si_pid; | |
700 | to->si_uid = from->cpt_si_uid; | |
701 | to->si_status = from->cpt_si_status; | |
702 | memcpy (&to->si_utime, &from->cpt_si_utime, | |
703 | sizeof (to->si_utime)); | |
704 | memcpy (&to->si_stime, &from->cpt_si_stime, | |
705 | sizeof (to->si_stime)); | |
706 | break; | |
707 | case SIGILL: | |
708 | case SIGFPE: | |
709 | case SIGSEGV: | |
710 | case SIGBUS: | |
711 | to->si_addr = (void *) (intptr_t) from->cpt_si_addr; | |
712 | break; | |
713 | case SIGPOLL: | |
714 | to->si_band = from->cpt_si_band; | |
715 | to->si_fd = from->cpt_si_fd; | |
716 | break; | |
717 | default: | |
718 | to->si_pid = from->cpt_si_pid; | |
719 | to->si_uid = from->cpt_si_uid; | |
720 | to->si_ptr = (void* ) (intptr_t) from->cpt_si_ptr; | |
721 | break; | |
722 | } | |
723 | } | |
724 | } | |
725 | ||
5b009018 PA |
726 | /* Convert a native/host siginfo object, into/from the siginfo in the |
727 | layout of the inferiors' architecture. Returns true if any | |
728 | conversion was done; false otherwise. If DIRECTION is 1, then copy | |
729 | from INF to NATIVE. If DIRECTION is 0, copy from NATIVE to | |
730 | INF. */ | |
731 | ||
732 | static int | |
a5362b9a | 733 | amd64_linux_siginfo_fixup (siginfo_t *native, gdb_byte *inf, int direction) |
5b009018 | 734 | { |
ba224c70 L |
735 | struct gdbarch *gdbarch = get_frame_arch (get_current_frame ()); |
736 | ||
5b009018 PA |
737 | /* Is the inferior 32-bit? If so, then do fixup the siginfo |
738 | object. */ | |
ba224c70 | 739 | if (gdbarch_bfd_arch_info (gdbarch)->bits_per_word == 32) |
5b009018 | 740 | { |
a5362b9a | 741 | gdb_assert (sizeof (siginfo_t) == sizeof (compat_siginfo_t)); |
5b009018 PA |
742 | |
743 | if (direction == 0) | |
744 | compat_siginfo_from_siginfo ((struct compat_siginfo *) inf, native); | |
745 | else | |
746 | siginfo_from_compat_siginfo (native, (struct compat_siginfo *) inf); | |
747 | ||
ba224c70 L |
748 | return 1; |
749 | } | |
750 | /* No fixup for native x32 GDB. */ | |
751 | else if (gdbarch_addr_bit (gdbarch) == 32 && sizeof (void *) == 8) | |
752 | { | |
753 | gdb_assert (sizeof (siginfo_t) == sizeof (compat_x32_siginfo_t)); | |
754 | ||
755 | if (direction == 0) | |
756 | compat_x32_siginfo_from_siginfo ((struct compat_x32_siginfo *) inf, | |
757 | native); | |
758 | else | |
759 | siginfo_from_compat_x32_siginfo (native, | |
760 | (struct compat_x32_siginfo *) inf); | |
761 | ||
5b009018 PA |
762 | return 1; |
763 | } | |
764 | else | |
765 | return 0; | |
766 | } | |
040baaf6 | 767 | \f |
c1e246a0 GB |
768 | |
769 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
770 | void _initialize_amd64_linux_nat (void); | |
771 | ||
772 | void | |
773 | _initialize_amd64_linux_nat (void) | |
774 | { | |
775 | struct target_ops *t; | |
776 | ||
777 | amd64_native_gregset32_reg_offset = amd64_linux_gregset32_reg_offset; | |
778 | amd64_native_gregset32_num_regs = I386_LINUX_NUM_REGS; | |
779 | amd64_native_gregset64_reg_offset = amd64_linux_gregset_reg_offset; | |
780 | amd64_native_gregset64_num_regs = AMD64_LINUX_NUM_REGS; | |
781 | ||
782 | gdb_assert (ARRAY_SIZE (amd64_linux_gregset32_reg_offset) | |
783 | == amd64_native_gregset32_num_regs); | |
784 | ||
785 | /* Create a generic x86 GNU/Linux target. */ | |
786 | t = x86_linux_create_target (); | |
787 | ||
788 | /* Add our register access methods. */ | |
789 | t->to_fetch_registers = amd64_linux_fetch_inferior_registers; | |
790 | t->to_store_registers = amd64_linux_store_inferior_registers; | |
791 | ||
792 | /* Add the target. */ | |
793 | x86_linux_add_target (t); | |
794 | ||
795 | /* Add our siginfo layout converter. */ | |
796 | linux_nat_set_siginfo_fixup (t, amd64_linux_siginfo_fixup); | |
797 | } |