Commit | Line | Data |
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a4b6fc86 | 1 | /* Native-dependent code for GNU/Linux x86-64. |
0a65a603 | 2 | |
ecd75fc8 | 3 | Copyright (C) 2001-2014 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" | |
23 | #include "gdbcore.h" | |
24 | #include "regcache.h" | |
a055a187 | 25 | #include "regset.h" |
4056d258 | 26 | #include "linux-nat.h" |
8695c747 | 27 | #include "amd64-linux-tdep.h" |
125f8a3d | 28 | #include "nat/linux-btrace.h" |
3e3aea48 | 29 | #include "btrace.h" |
c4f35dd8 | 30 | |
53e95fcf | 31 | #include "gdb_assert.h" |
0e9f083f | 32 | #include <string.h> |
a055a187 L |
33 | #include "elf/common.h" |
34 | #include <sys/uio.h> | |
53e95fcf JS |
35 | #include <sys/ptrace.h> |
36 | #include <sys/debugreg.h> | |
37 | #include <sys/syscall.h> | |
38 | #include <sys/procfs.h> | |
6fea9e18 | 39 | #include <sys/user.h> |
c43af07c EZ |
40 | #include <asm/prctl.h> |
41 | /* FIXME ezannoni-2003-07-09: we need <sys/reg.h> to be included after | |
42 | <asm/ptrace.h> because the latter redefines FS and GS for no apparent | |
43 | reason, and those definitions don't match the ones that libpthread_db | |
44 | uses, which come from <sys/reg.h>. */ | |
0963b4bd | 45 | /* ezannoni-2003-07-09: I think this is fixed. The extraneous defs have |
c43af07c EZ |
46 | been removed from ptrace.h in the kernel. However, better safe than |
47 | sorry. */ | |
48 | #include <asm/ptrace.h> | |
33a0a2ac | 49 | #include <sys/reg.h> |
c43af07c | 50 | #include "gdb_proc_service.h" |
33a0a2ac | 51 | |
c4f35dd8 MK |
52 | /* Prototypes for supply_gregset etc. */ |
53 | #include "gregset.h" | |
54 | ||
9c1488cb | 55 | #include "amd64-tdep.h" |
60fac5b8 MK |
56 | #include "i386-linux-tdep.h" |
57 | #include "amd64-nat.h" | |
9bb9e8ad | 58 | #include "i386-nat.h" |
a055a187 L |
59 | #include "i386-xstate.h" |
60 | ||
040baaf6 | 61 | #include "x86-linux-nat.h" |
60fac5b8 | 62 | |
60fac5b8 MK |
63 | /* Mapping between the general-purpose registers in GNU/Linux x86-64 |
64 | `struct user' format and GDB's register cache layout for GNU/Linux | |
65 | i386. | |
66 | ||
67 | Note that most GNU/Linux x86-64 registers are 64-bit, while the | |
68 | GNU/Linux i386 registers are all 32-bit, but since we're | |
69 | little-endian we get away with that. */ | |
70 | ||
71 | /* From <sys/reg.h> on GNU/Linux i386. */ | |
430eaf2e | 72 | static int amd64_linux_gregset32_reg_offset[] = |
60fac5b8 | 73 | { |
f5859b4d MK |
74 | RAX * 8, RCX * 8, /* %eax, %ecx */ |
75 | RDX * 8, RBX * 8, /* %edx, %ebx */ | |
76 | RSP * 8, RBP * 8, /* %esp, %ebp */ | |
77 | RSI * 8, RDI * 8, /* %esi, %edi */ | |
78 | RIP * 8, EFLAGS * 8, /* %eip, %eflags */ | |
79 | CS * 8, SS * 8, /* %cs, %ss */ | |
80 | DS * 8, ES * 8, /* %ds, %es */ | |
81 | FS * 8, GS * 8, /* %fs, %gs */ | |
60fac5b8 MK |
82 | -1, -1, -1, -1, -1, -1, -1, -1, |
83 | -1, -1, -1, -1, -1, -1, -1, -1, | |
84 | -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
a055a187 | 85 | -1, -1, -1, -1, -1, -1, -1, -1, |
01f9f808 MS |
86 | -1, -1, -1, -1, /* MPX registers BND0 ... BND3. */ |
87 | -1, -1, /* MPX registers BNDCFGU, BNDSTATUS. */ | |
88 | -1, -1, -1, -1, -1, -1, -1, -1, /* k0 ... k7 (AVX512) */ | |
89 | -1, -1, -1, -1, -1, -1, -1, -1, /* zmm0 ... zmm7 (AVX512) */ | |
90 | ORIG_RAX * 8 /* "orig_eax" */ | |
60fac5b8 | 91 | }; |
53e95fcf JS |
92 | \f |
93 | ||
94 | /* Transfering the general-purpose registers between GDB, inferiors | |
95 | and core files. */ | |
96 | ||
60fac5b8 | 97 | /* Fill GDB's register cache with the general-purpose register values |
53e95fcf JS |
98 | in *GREGSETP. */ |
99 | ||
100 | void | |
7f7fe91e | 101 | supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp) |
53e95fcf | 102 | { |
7f7fe91e | 103 | amd64_supply_native_gregset (regcache, gregsetp, -1); |
53e95fcf JS |
104 | } |
105 | ||
60fac5b8 MK |
106 | /* Fill register REGNUM (if it is a general-purpose register) in |
107 | *GREGSETP with the value in GDB's register cache. If REGNUM is -1, | |
53e95fcf JS |
108 | do this for all registers. */ |
109 | ||
110 | void | |
7f7fe91e UW |
111 | fill_gregset (const struct regcache *regcache, |
112 | elf_gregset_t *gregsetp, int regnum) | |
53e95fcf | 113 | { |
7f7fe91e | 114 | amd64_collect_native_gregset (regcache, gregsetp, regnum); |
53e95fcf JS |
115 | } |
116 | ||
53e95fcf JS |
117 | /* Transfering floating-point registers between GDB, inferiors and cores. */ |
118 | ||
60fac5b8 | 119 | /* Fill GDB's register cache with the floating-point and SSE register |
c4f35dd8 | 120 | values in *FPREGSETP. */ |
53e95fcf JS |
121 | |
122 | void | |
7f7fe91e | 123 | supply_fpregset (struct regcache *regcache, const elf_fpregset_t *fpregsetp) |
53e95fcf | 124 | { |
7f7fe91e | 125 | amd64_supply_fxsave (regcache, -1, fpregsetp); |
53e95fcf JS |
126 | } |
127 | ||
8dda9770 | 128 | /* Fill register REGNUM (if it is a floating-point or SSE register) in |
60fac5b8 | 129 | *FPREGSETP with the value in GDB's register cache. If REGNUM is |
c4f35dd8 | 130 | -1, do this for all registers. */ |
53e95fcf JS |
131 | |
132 | void | |
7f7fe91e UW |
133 | fill_fpregset (const struct regcache *regcache, |
134 | elf_fpregset_t *fpregsetp, int regnum) | |
53e95fcf | 135 | { |
7f7fe91e | 136 | amd64_collect_fxsave (regcache, regnum, fpregsetp); |
53e95fcf | 137 | } |
53e95fcf JS |
138 | \f |
139 | ||
140 | /* Transferring arbitrary registers between GDB and inferior. */ | |
141 | ||
60fac5b8 | 142 | /* Fetch register REGNUM from the child process. If REGNUM is -1, do |
53e95fcf JS |
143 | this for all registers (including the floating point and SSE |
144 | registers). */ | |
145 | ||
10d6c8cd | 146 | static void |
28439f5e PA |
147 | amd64_linux_fetch_inferior_registers (struct target_ops *ops, |
148 | struct regcache *regcache, int regnum) | |
53e95fcf | 149 | { |
f8028488 | 150 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
53e95fcf JS |
151 | int tid; |
152 | ||
a4b6fc86 | 153 | /* GNU/Linux LWP ID's are process ID's. */ |
dfd4cc63 | 154 | tid = ptid_get_lwp (inferior_ptid); |
c4f35dd8 | 155 | if (tid == 0) |
dfd4cc63 | 156 | tid = ptid_get_pid (inferior_ptid); /* Not a threaded program. */ |
53e95fcf | 157 | |
f8028488 | 158 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 159 | { |
99679982 MK |
160 | elf_gregset_t regs; |
161 | ||
162 | if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) | |
edefbb7c | 163 | perror_with_name (_("Couldn't get registers")); |
99679982 | 164 | |
56be3814 | 165 | amd64_supply_native_gregset (regcache, ®s, -1); |
60fac5b8 MK |
166 | if (regnum != -1) |
167 | return; | |
53e95fcf JS |
168 | } |
169 | ||
f8028488 | 170 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 171 | { |
99679982 | 172 | elf_fpregset_t fpregs; |
53e95fcf | 173 | |
a055a187 L |
174 | if (have_ptrace_getregset) |
175 | { | |
176 | char xstateregs[I386_XSTATE_MAX_SIZE]; | |
177 | struct iovec iov; | |
178 | ||
179 | iov.iov_base = xstateregs; | |
180 | iov.iov_len = sizeof (xstateregs); | |
181 | if (ptrace (PTRACE_GETREGSET, tid, | |
182 | (unsigned int) NT_X86_XSTATE, (long) &iov) < 0) | |
183 | perror_with_name (_("Couldn't get extended state status")); | |
99679982 | 184 | |
a055a187 L |
185 | amd64_supply_xsave (regcache, -1, xstateregs); |
186 | } | |
187 | else | |
188 | { | |
189 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) | |
190 | perror_with_name (_("Couldn't get floating point status")); | |
191 | ||
192 | amd64_supply_fxsave (regcache, -1, &fpregs); | |
193 | } | |
99679982 | 194 | } |
53e95fcf JS |
195 | } |
196 | ||
60fac5b8 MK |
197 | /* Store register REGNUM back into the child process. If REGNUM is |
198 | -1, do this for all registers (including the floating-point and SSE | |
53e95fcf | 199 | registers). */ |
c4f35dd8 | 200 | |
10d6c8cd | 201 | static void |
28439f5e PA |
202 | amd64_linux_store_inferior_registers (struct target_ops *ops, |
203 | struct regcache *regcache, int regnum) | |
53e95fcf | 204 | { |
f8028488 | 205 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
53e95fcf JS |
206 | int tid; |
207 | ||
a4b6fc86 | 208 | /* GNU/Linux LWP ID's are process ID's. */ |
dfd4cc63 | 209 | tid = ptid_get_lwp (inferior_ptid); |
c4f35dd8 | 210 | if (tid == 0) |
dfd4cc63 | 211 | tid = ptid_get_pid (inferior_ptid); /* Not a threaded program. */ |
53e95fcf | 212 | |
f8028488 | 213 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 214 | { |
99679982 MK |
215 | elf_gregset_t regs; |
216 | ||
217 | if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) | |
edefbb7c | 218 | perror_with_name (_("Couldn't get registers")); |
99679982 | 219 | |
56be3814 | 220 | amd64_collect_native_gregset (regcache, ®s, regnum); |
99679982 MK |
221 | |
222 | if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0) | |
edefbb7c | 223 | perror_with_name (_("Couldn't write registers")); |
99679982 | 224 | |
60fac5b8 MK |
225 | if (regnum != -1) |
226 | return; | |
53e95fcf JS |
227 | } |
228 | ||
f8028488 | 229 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 230 | { |
99679982 MK |
231 | elf_fpregset_t fpregs; |
232 | ||
a055a187 L |
233 | if (have_ptrace_getregset) |
234 | { | |
235 | char xstateregs[I386_XSTATE_MAX_SIZE]; | |
236 | struct iovec iov; | |
237 | ||
238 | iov.iov_base = xstateregs; | |
239 | iov.iov_len = sizeof (xstateregs); | |
240 | if (ptrace (PTRACE_GETREGSET, tid, | |
241 | (unsigned int) NT_X86_XSTATE, (long) &iov) < 0) | |
242 | perror_with_name (_("Couldn't get extended state status")); | |
99679982 | 243 | |
a055a187 L |
244 | amd64_collect_xsave (regcache, regnum, xstateregs, 0); |
245 | ||
246 | if (ptrace (PTRACE_SETREGSET, tid, | |
247 | (unsigned int) NT_X86_XSTATE, (long) &iov) < 0) | |
248 | perror_with_name (_("Couldn't write extended state status")); | |
249 | } | |
250 | else | |
251 | { | |
252 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) | |
253 | perror_with_name (_("Couldn't get floating point status")); | |
99679982 | 254 | |
a055a187 | 255 | amd64_collect_fxsave (regcache, regnum, &fpregs); |
99679982 | 256 | |
a055a187 L |
257 | if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0) |
258 | perror_with_name (_("Couldn't write floating point status")); | |
259 | } | |
53e95fcf | 260 | } |
53e95fcf JS |
261 | } |
262 | \f | |
1aa7e42c | 263 | |
50d71875 AC |
264 | /* This function is called by libthread_db as part of its handling of |
265 | a request for a thread's local storage address. */ | |
266 | ||
5bca7895 | 267 | ps_err_e |
c43af07c EZ |
268 | ps_get_thread_area (const struct ps_prochandle *ph, |
269 | lwpid_t lwpid, int idx, void **base) | |
270 | { | |
f5656ead | 271 | if (gdbarch_bfd_arch_info (target_gdbarch ())->bits_per_word == 32) |
50d71875 | 272 | { |
8c420b8d GB |
273 | unsigned int base_addr; |
274 | ps_err_e result; | |
275 | ||
276 | result = x86_linux_get_thread_area (lwpid, (void *) (long) idx, | |
277 | &base_addr); | |
278 | if (result == PS_OK) | |
279 | { | |
280 | /* Extend the value to 64 bits. Here it's assumed that | |
281 | a "long" and a "void *" are the same. */ | |
282 | (*base) = (void *) (long) base_addr; | |
283 | } | |
284 | return result; | |
50d71875 AC |
285 | } |
286 | else | |
287 | { | |
288 | /* This definition comes from prctl.h, but some kernels may not | |
289 | have it. */ | |
c43af07c EZ |
290 | #ifndef PTRACE_ARCH_PRCTL |
291 | #define PTRACE_ARCH_PRCTL 30 | |
292 | #endif | |
50d71875 AC |
293 | /* FIXME: ezannoni-2003-07-09 see comment above about include |
294 | file order. We could be getting bogus values for these two. */ | |
295 | gdb_assert (FS < ELF_NGREG); | |
296 | gdb_assert (GS < ELF_NGREG); | |
297 | switch (idx) | |
298 | { | |
299 | case FS: | |
6fea9e18 L |
300 | #ifdef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE |
301 | { | |
302 | /* PTRACE_ARCH_PRCTL is obsolete since 2.6.25, where the | |
303 | fs_base and gs_base fields of user_regs_struct can be | |
304 | used directly. */ | |
305 | unsigned long fs; | |
306 | errno = 0; | |
307 | fs = ptrace (PTRACE_PEEKUSER, lwpid, | |
308 | offsetof (struct user_regs_struct, fs_base), 0); | |
309 | if (errno == 0) | |
310 | { | |
311 | *base = (void *) fs; | |
312 | return PS_OK; | |
313 | } | |
314 | } | |
315 | #endif | |
50d71875 AC |
316 | if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_FS) == 0) |
317 | return PS_OK; | |
318 | break; | |
319 | case GS: | |
6fea9e18 L |
320 | #ifdef HAVE_STRUCT_USER_REGS_STRUCT_GS_BASE |
321 | { | |
322 | unsigned long gs; | |
323 | errno = 0; | |
324 | gs = ptrace (PTRACE_PEEKUSER, lwpid, | |
325 | offsetof (struct user_regs_struct, gs_base), 0); | |
326 | if (errno == 0) | |
327 | { | |
328 | *base = (void *) gs; | |
329 | return PS_OK; | |
330 | } | |
331 | } | |
332 | #endif | |
50d71875 AC |
333 | if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_GS) == 0) |
334 | return PS_OK; | |
335 | break; | |
336 | default: /* Should not happen. */ | |
337 | return PS_BADADDR; | |
338 | } | |
c43af07c | 339 | } |
b6d42148 | 340 | return PS_ERR; /* ptrace failed. */ |
c43af07c | 341 | } |
5bca7895 | 342 | \f |
c43af07c | 343 | |
5b009018 PA |
344 | /* When GDB is built as a 64-bit application on linux, the |
345 | PTRACE_GETSIGINFO data is always presented in 64-bit layout. Since | |
346 | debugging a 32-bit inferior with a 64-bit GDB should look the same | |
347 | as debugging it with a 32-bit GDB, we do the 32-bit <-> 64-bit | |
348 | conversion in-place ourselves. */ | |
349 | ||
350 | /* These types below (compat_*) define a siginfo type that is layout | |
351 | compatible with the siginfo type exported by the 32-bit userspace | |
352 | support. */ | |
353 | ||
354 | typedef int compat_int_t; | |
355 | typedef unsigned int compat_uptr_t; | |
356 | ||
357 | typedef int compat_time_t; | |
358 | typedef int compat_timer_t; | |
359 | typedef int compat_clock_t; | |
360 | ||
361 | struct compat_timeval | |
362 | { | |
363 | compat_time_t tv_sec; | |
364 | int tv_usec; | |
365 | }; | |
366 | ||
367 | typedef union compat_sigval | |
368 | { | |
369 | compat_int_t sival_int; | |
370 | compat_uptr_t sival_ptr; | |
371 | } compat_sigval_t; | |
372 | ||
373 | typedef struct compat_siginfo | |
374 | { | |
375 | int si_signo; | |
376 | int si_errno; | |
377 | int si_code; | |
378 | ||
379 | union | |
380 | { | |
381 | int _pad[((128 / sizeof (int)) - 3)]; | |
382 | ||
383 | /* kill() */ | |
384 | struct | |
385 | { | |
386 | unsigned int _pid; | |
387 | unsigned int _uid; | |
388 | } _kill; | |
389 | ||
390 | /* POSIX.1b timers */ | |
391 | struct | |
392 | { | |
393 | compat_timer_t _tid; | |
394 | int _overrun; | |
395 | compat_sigval_t _sigval; | |
396 | } _timer; | |
397 | ||
398 | /* POSIX.1b signals */ | |
399 | struct | |
400 | { | |
401 | unsigned int _pid; | |
402 | unsigned int _uid; | |
403 | compat_sigval_t _sigval; | |
404 | } _rt; | |
405 | ||
406 | /* SIGCHLD */ | |
407 | struct | |
408 | { | |
409 | unsigned int _pid; | |
410 | unsigned int _uid; | |
411 | int _status; | |
412 | compat_clock_t _utime; | |
413 | compat_clock_t _stime; | |
414 | } _sigchld; | |
415 | ||
416 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
417 | struct | |
418 | { | |
419 | unsigned int _addr; | |
420 | } _sigfault; | |
421 | ||
422 | /* SIGPOLL */ | |
423 | struct | |
424 | { | |
425 | int _band; | |
426 | int _fd; | |
427 | } _sigpoll; | |
428 | } _sifields; | |
429 | } compat_siginfo_t; | |
430 | ||
ba224c70 L |
431 | /* For x32, clock_t in _sigchld is 64bit aligned at 4 bytes. */ |
432 | typedef struct compat_x32_clock | |
433 | { | |
434 | int lower; | |
435 | int upper; | |
436 | } compat_x32_clock_t; | |
437 | ||
438 | typedef struct compat_x32_siginfo | |
439 | { | |
440 | int si_signo; | |
441 | int si_errno; | |
442 | int si_code; | |
443 | ||
444 | union | |
445 | { | |
446 | int _pad[((128 / sizeof (int)) - 3)]; | |
447 | ||
448 | /* kill() */ | |
449 | struct | |
450 | { | |
451 | unsigned int _pid; | |
452 | unsigned int _uid; | |
453 | } _kill; | |
454 | ||
455 | /* POSIX.1b timers */ | |
456 | struct | |
457 | { | |
458 | compat_timer_t _tid; | |
459 | int _overrun; | |
460 | compat_sigval_t _sigval; | |
461 | } _timer; | |
462 | ||
463 | /* POSIX.1b signals */ | |
464 | struct | |
465 | { | |
466 | unsigned int _pid; | |
467 | unsigned int _uid; | |
468 | compat_sigval_t _sigval; | |
469 | } _rt; | |
470 | ||
471 | /* SIGCHLD */ | |
472 | struct | |
473 | { | |
474 | unsigned int _pid; | |
475 | unsigned int _uid; | |
476 | int _status; | |
477 | compat_x32_clock_t _utime; | |
478 | compat_x32_clock_t _stime; | |
479 | } _sigchld; | |
480 | ||
481 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
482 | struct | |
483 | { | |
484 | unsigned int _addr; | |
485 | } _sigfault; | |
486 | ||
487 | /* SIGPOLL */ | |
488 | struct | |
489 | { | |
490 | int _band; | |
491 | int _fd; | |
492 | } _sigpoll; | |
493 | } _sifields; | |
494 | } compat_x32_siginfo_t; | |
495 | ||
5b009018 PA |
496 | #define cpt_si_pid _sifields._kill._pid |
497 | #define cpt_si_uid _sifields._kill._uid | |
498 | #define cpt_si_timerid _sifields._timer._tid | |
499 | #define cpt_si_overrun _sifields._timer._overrun | |
500 | #define cpt_si_status _sifields._sigchld._status | |
501 | #define cpt_si_utime _sifields._sigchld._utime | |
502 | #define cpt_si_stime _sifields._sigchld._stime | |
503 | #define cpt_si_ptr _sifields._rt._sigval.sival_ptr | |
504 | #define cpt_si_addr _sifields._sigfault._addr | |
505 | #define cpt_si_band _sifields._sigpoll._band | |
506 | #define cpt_si_fd _sifields._sigpoll._fd | |
507 | ||
14064aa2 DE |
508 | /* glibc at least up to 2.3.2 doesn't have si_timerid, si_overrun. |
509 | In their place is si_timer1,si_timer2. */ | |
510 | #ifndef si_timerid | |
511 | #define si_timerid si_timer1 | |
512 | #endif | |
513 | #ifndef si_overrun | |
514 | #define si_overrun si_timer2 | |
515 | #endif | |
516 | ||
5b009018 PA |
517 | static void |
518 | compat_siginfo_from_siginfo (compat_siginfo_t *to, siginfo_t *from) | |
519 | { | |
520 | memset (to, 0, sizeof (*to)); | |
521 | ||
522 | to->si_signo = from->si_signo; | |
523 | to->si_errno = from->si_errno; | |
524 | to->si_code = from->si_code; | |
525 | ||
b53a1623 | 526 | if (to->si_code == SI_TIMER) |
5b009018 | 527 | { |
b53a1623 PA |
528 | to->cpt_si_timerid = from->si_timerid; |
529 | to->cpt_si_overrun = from->si_overrun; | |
5b009018 PA |
530 | to->cpt_si_ptr = (intptr_t) from->si_ptr; |
531 | } | |
532 | else if (to->si_code == SI_USER) | |
533 | { | |
534 | to->cpt_si_pid = from->si_pid; | |
535 | to->cpt_si_uid = from->si_uid; | |
536 | } | |
b53a1623 | 537 | else if (to->si_code < 0) |
5b009018 | 538 | { |
b53a1623 PA |
539 | to->cpt_si_pid = from->si_pid; |
540 | to->cpt_si_uid = from->si_uid; | |
5b009018 PA |
541 | to->cpt_si_ptr = (intptr_t) from->si_ptr; |
542 | } | |
543 | else | |
544 | { | |
545 | switch (to->si_signo) | |
546 | { | |
547 | case SIGCHLD: | |
548 | to->cpt_si_pid = from->si_pid; | |
549 | to->cpt_si_uid = from->si_uid; | |
550 | to->cpt_si_status = from->si_status; | |
551 | to->cpt_si_utime = from->si_utime; | |
552 | to->cpt_si_stime = from->si_stime; | |
553 | break; | |
554 | case SIGILL: | |
555 | case SIGFPE: | |
556 | case SIGSEGV: | |
557 | case SIGBUS: | |
558 | to->cpt_si_addr = (intptr_t) from->si_addr; | |
559 | break; | |
560 | case SIGPOLL: | |
561 | to->cpt_si_band = from->si_band; | |
562 | to->cpt_si_fd = from->si_fd; | |
563 | break; | |
564 | default: | |
565 | to->cpt_si_pid = from->si_pid; | |
566 | to->cpt_si_uid = from->si_uid; | |
567 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
568 | break; | |
569 | } | |
570 | } | |
571 | } | |
572 | ||
573 | static void | |
574 | siginfo_from_compat_siginfo (siginfo_t *to, compat_siginfo_t *from) | |
575 | { | |
576 | memset (to, 0, sizeof (*to)); | |
577 | ||
578 | to->si_signo = from->si_signo; | |
579 | to->si_errno = from->si_errno; | |
580 | to->si_code = from->si_code; | |
581 | ||
b53a1623 | 582 | if (to->si_code == SI_TIMER) |
5b009018 | 583 | { |
b53a1623 PA |
584 | to->si_timerid = from->cpt_si_timerid; |
585 | to->si_overrun = from->cpt_si_overrun; | |
5b009018 PA |
586 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; |
587 | } | |
588 | else if (to->si_code == SI_USER) | |
589 | { | |
590 | to->si_pid = from->cpt_si_pid; | |
591 | to->si_uid = from->cpt_si_uid; | |
592 | } | |
b53a1623 | 593 | if (to->si_code < 0) |
5b009018 | 594 | { |
b53a1623 PA |
595 | to->si_pid = from->cpt_si_pid; |
596 | to->si_uid = from->cpt_si_uid; | |
5b009018 PA |
597 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; |
598 | } | |
599 | else | |
600 | { | |
601 | switch (to->si_signo) | |
602 | { | |
603 | case SIGCHLD: | |
604 | to->si_pid = from->cpt_si_pid; | |
605 | to->si_uid = from->cpt_si_uid; | |
606 | to->si_status = from->cpt_si_status; | |
607 | to->si_utime = from->cpt_si_utime; | |
608 | to->si_stime = from->cpt_si_stime; | |
609 | break; | |
610 | case SIGILL: | |
611 | case SIGFPE: | |
612 | case SIGSEGV: | |
613 | case SIGBUS: | |
614 | to->si_addr = (void *) (intptr_t) from->cpt_si_addr; | |
615 | break; | |
616 | case SIGPOLL: | |
617 | to->si_band = from->cpt_si_band; | |
618 | to->si_fd = from->cpt_si_fd; | |
619 | break; | |
620 | default: | |
621 | to->si_pid = from->cpt_si_pid; | |
622 | to->si_uid = from->cpt_si_uid; | |
623 | to->si_ptr = (void* ) (intptr_t) from->cpt_si_ptr; | |
624 | break; | |
625 | } | |
626 | } | |
627 | } | |
628 | ||
ba224c70 L |
629 | static void |
630 | compat_x32_siginfo_from_siginfo (compat_x32_siginfo_t *to, | |
631 | siginfo_t *from) | |
632 | { | |
633 | memset (to, 0, sizeof (*to)); | |
634 | ||
635 | to->si_signo = from->si_signo; | |
636 | to->si_errno = from->si_errno; | |
637 | to->si_code = from->si_code; | |
638 | ||
639 | if (to->si_code == SI_TIMER) | |
640 | { | |
641 | to->cpt_si_timerid = from->si_timerid; | |
642 | to->cpt_si_overrun = from->si_overrun; | |
643 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
644 | } | |
645 | else if (to->si_code == SI_USER) | |
646 | { | |
647 | to->cpt_si_pid = from->si_pid; | |
648 | to->cpt_si_uid = from->si_uid; | |
649 | } | |
650 | else if (to->si_code < 0) | |
651 | { | |
652 | to->cpt_si_pid = from->si_pid; | |
653 | to->cpt_si_uid = from->si_uid; | |
654 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
655 | } | |
656 | else | |
657 | { | |
658 | switch (to->si_signo) | |
659 | { | |
660 | case SIGCHLD: | |
661 | to->cpt_si_pid = from->si_pid; | |
662 | to->cpt_si_uid = from->si_uid; | |
663 | to->cpt_si_status = from->si_status; | |
664 | memcpy (&to->cpt_si_utime, &from->si_utime, | |
665 | sizeof (to->cpt_si_utime)); | |
666 | memcpy (&to->cpt_si_stime, &from->si_stime, | |
667 | sizeof (to->cpt_si_stime)); | |
668 | break; | |
669 | case SIGILL: | |
670 | case SIGFPE: | |
671 | case SIGSEGV: | |
672 | case SIGBUS: | |
673 | to->cpt_si_addr = (intptr_t) from->si_addr; | |
674 | break; | |
675 | case SIGPOLL: | |
676 | to->cpt_si_band = from->si_band; | |
677 | to->cpt_si_fd = from->si_fd; | |
678 | break; | |
679 | default: | |
680 | to->cpt_si_pid = from->si_pid; | |
681 | to->cpt_si_uid = from->si_uid; | |
682 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
683 | break; | |
684 | } | |
685 | } | |
686 | } | |
687 | ||
688 | static void | |
689 | siginfo_from_compat_x32_siginfo (siginfo_t *to, | |
690 | compat_x32_siginfo_t *from) | |
691 | { | |
692 | memset (to, 0, sizeof (*to)); | |
693 | ||
694 | to->si_signo = from->si_signo; | |
695 | to->si_errno = from->si_errno; | |
696 | to->si_code = from->si_code; | |
697 | ||
698 | if (to->si_code == SI_TIMER) | |
699 | { | |
700 | to->si_timerid = from->cpt_si_timerid; | |
701 | to->si_overrun = from->cpt_si_overrun; | |
702 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; | |
703 | } | |
704 | else if (to->si_code == SI_USER) | |
705 | { | |
706 | to->si_pid = from->cpt_si_pid; | |
707 | to->si_uid = from->cpt_si_uid; | |
708 | } | |
709 | if (to->si_code < 0) | |
710 | { | |
711 | to->si_pid = from->cpt_si_pid; | |
712 | to->si_uid = from->cpt_si_uid; | |
713 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; | |
714 | } | |
715 | else | |
716 | { | |
717 | switch (to->si_signo) | |
718 | { | |
719 | case SIGCHLD: | |
720 | to->si_pid = from->cpt_si_pid; | |
721 | to->si_uid = from->cpt_si_uid; | |
722 | to->si_status = from->cpt_si_status; | |
723 | memcpy (&to->si_utime, &from->cpt_si_utime, | |
724 | sizeof (to->si_utime)); | |
725 | memcpy (&to->si_stime, &from->cpt_si_stime, | |
726 | sizeof (to->si_stime)); | |
727 | break; | |
728 | case SIGILL: | |
729 | case SIGFPE: | |
730 | case SIGSEGV: | |
731 | case SIGBUS: | |
732 | to->si_addr = (void *) (intptr_t) from->cpt_si_addr; | |
733 | break; | |
734 | case SIGPOLL: | |
735 | to->si_band = from->cpt_si_band; | |
736 | to->si_fd = from->cpt_si_fd; | |
737 | break; | |
738 | default: | |
739 | to->si_pid = from->cpt_si_pid; | |
740 | to->si_uid = from->cpt_si_uid; | |
741 | to->si_ptr = (void* ) (intptr_t) from->cpt_si_ptr; | |
742 | break; | |
743 | } | |
744 | } | |
745 | } | |
746 | ||
5b009018 PA |
747 | /* Convert a native/host siginfo object, into/from the siginfo in the |
748 | layout of the inferiors' architecture. Returns true if any | |
749 | conversion was done; false otherwise. If DIRECTION is 1, then copy | |
750 | from INF to NATIVE. If DIRECTION is 0, copy from NATIVE to | |
751 | INF. */ | |
752 | ||
753 | static int | |
a5362b9a | 754 | amd64_linux_siginfo_fixup (siginfo_t *native, gdb_byte *inf, int direction) |
5b009018 | 755 | { |
ba224c70 L |
756 | struct gdbarch *gdbarch = get_frame_arch (get_current_frame ()); |
757 | ||
5b009018 PA |
758 | /* Is the inferior 32-bit? If so, then do fixup the siginfo |
759 | object. */ | |
ba224c70 | 760 | if (gdbarch_bfd_arch_info (gdbarch)->bits_per_word == 32) |
5b009018 | 761 | { |
a5362b9a | 762 | gdb_assert (sizeof (siginfo_t) == sizeof (compat_siginfo_t)); |
5b009018 PA |
763 | |
764 | if (direction == 0) | |
765 | compat_siginfo_from_siginfo ((struct compat_siginfo *) inf, native); | |
766 | else | |
767 | siginfo_from_compat_siginfo (native, (struct compat_siginfo *) inf); | |
768 | ||
ba224c70 L |
769 | return 1; |
770 | } | |
771 | /* No fixup for native x32 GDB. */ | |
772 | else if (gdbarch_addr_bit (gdbarch) == 32 && sizeof (void *) == 8) | |
773 | { | |
774 | gdb_assert (sizeof (siginfo_t) == sizeof (compat_x32_siginfo_t)); | |
775 | ||
776 | if (direction == 0) | |
777 | compat_x32_siginfo_from_siginfo ((struct compat_x32_siginfo *) inf, | |
778 | native); | |
779 | else | |
780 | siginfo_from_compat_x32_siginfo (native, | |
781 | (struct compat_x32_siginfo *) inf); | |
782 | ||
5b009018 PA |
783 | return 1; |
784 | } | |
785 | else | |
786 | return 0; | |
787 | } | |
040baaf6 | 788 | \f |
c1e246a0 GB |
789 | |
790 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
791 | void _initialize_amd64_linux_nat (void); | |
792 | ||
793 | void | |
794 | _initialize_amd64_linux_nat (void) | |
795 | { | |
796 | struct target_ops *t; | |
797 | ||
798 | amd64_native_gregset32_reg_offset = amd64_linux_gregset32_reg_offset; | |
799 | amd64_native_gregset32_num_regs = I386_LINUX_NUM_REGS; | |
800 | amd64_native_gregset64_reg_offset = amd64_linux_gregset_reg_offset; | |
801 | amd64_native_gregset64_num_regs = AMD64_LINUX_NUM_REGS; | |
802 | ||
803 | gdb_assert (ARRAY_SIZE (amd64_linux_gregset32_reg_offset) | |
804 | == amd64_native_gregset32_num_regs); | |
805 | ||
806 | /* Create a generic x86 GNU/Linux target. */ | |
807 | t = x86_linux_create_target (); | |
808 | ||
809 | /* Add our register access methods. */ | |
810 | t->to_fetch_registers = amd64_linux_fetch_inferior_registers; | |
811 | t->to_store_registers = amd64_linux_store_inferior_registers; | |
812 | ||
813 | /* Add the target. */ | |
814 | x86_linux_add_target (t); | |
815 | ||
816 | /* Add our siginfo layout converter. */ | |
817 | linux_nat_set_siginfo_fixup (t, amd64_linux_siginfo_fixup); | |
818 | } |