Commit | Line | Data |
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a4b6fc86 | 1 | /* Native-dependent code for GNU/Linux x86-64. |
0a65a603 | 2 | |
0fb0cc75 | 3 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
f973ed9c | 4 | Free Software Foundation, Inc. |
53e95fcf JS |
5 | Contributed by Jiri Smid, SuSE Labs. |
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 | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
53e95fcf JS |
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 | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
53e95fcf JS |
21 | |
22 | #include "defs.h" | |
23 | #include "inferior.h" | |
24 | #include "gdbcore.h" | |
25 | #include "regcache.h" | |
4056d258 | 26 | #include "linux-nat.h" |
8695c747 | 27 | #include "amd64-linux-tdep.h" |
c4f35dd8 | 28 | |
53e95fcf | 29 | #include "gdb_assert.h" |
30d52491 | 30 | #include "gdb_string.h" |
53e95fcf JS |
31 | #include <sys/ptrace.h> |
32 | #include <sys/debugreg.h> | |
33 | #include <sys/syscall.h> | |
34 | #include <sys/procfs.h> | |
c43af07c EZ |
35 | #include <asm/prctl.h> |
36 | /* FIXME ezannoni-2003-07-09: we need <sys/reg.h> to be included after | |
37 | <asm/ptrace.h> because the latter redefines FS and GS for no apparent | |
38 | reason, and those definitions don't match the ones that libpthread_db | |
39 | uses, which come from <sys/reg.h>. */ | |
40 | /* ezannoni-2003-07-09: I think this is fixed. The extraneous defs have | |
41 | been removed from ptrace.h in the kernel. However, better safe than | |
42 | sorry. */ | |
43 | #include <asm/ptrace.h> | |
33a0a2ac | 44 | #include <sys/reg.h> |
c43af07c | 45 | #include "gdb_proc_service.h" |
33a0a2ac | 46 | |
c4f35dd8 MK |
47 | /* Prototypes for supply_gregset etc. */ |
48 | #include "gregset.h" | |
49 | ||
9c1488cb | 50 | #include "amd64-tdep.h" |
60fac5b8 MK |
51 | #include "i386-linux-tdep.h" |
52 | #include "amd64-nat.h" | |
53 | ||
54 | /* Mapping between the general-purpose registers in GNU/Linux x86-64 | |
55 | `struct user' format and GDB's register cache layout. */ | |
56 | ||
430eaf2e | 57 | static int amd64_linux_gregset64_reg_offset[] = |
60fac5b8 MK |
58 | { |
59 | RAX * 8, RBX * 8, /* %rax, %rbx */ | |
60 | RCX * 8, RDX * 8, /* %rcx, %rdx */ | |
61 | RSI * 8, RDI * 8, /* %rsi, %rdi */ | |
62 | RBP * 8, RSP * 8, /* %rbp, %rsp */ | |
63 | R8 * 8, R9 * 8, /* %r8 ... */ | |
64 | R10 * 8, R11 * 8, | |
65 | R12 * 8, R13 * 8, | |
66 | R14 * 8, R15 * 8, /* ... %r15 */ | |
67 | RIP * 8, EFLAGS * 8, /* %rip, %eflags */ | |
af233647 | 68 | CS * 8, SS * 8, /* %cs, %ss */ |
60fac5b8 | 69 | DS * 8, ES * 8, /* %ds, %es */ |
8695c747 DJ |
70 | FS * 8, GS * 8, /* %fs, %gs */ |
71 | -1, -1, -1, -1, -1, -1, -1, -1, | |
72 | -1, -1, -1, -1, -1, -1, -1, -1, | |
73 | -1, -1, -1, -1, -1, -1, -1, -1, | |
74 | -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
75 | ORIG_RAX * 8 | |
60fac5b8 MK |
76 | }; |
77 | \f | |
78 | ||
79 | /* Mapping between the general-purpose registers in GNU/Linux x86-64 | |
80 | `struct user' format and GDB's register cache layout for GNU/Linux | |
81 | i386. | |
82 | ||
83 | Note that most GNU/Linux x86-64 registers are 64-bit, while the | |
84 | GNU/Linux i386 registers are all 32-bit, but since we're | |
85 | little-endian we get away with that. */ | |
86 | ||
87 | /* From <sys/reg.h> on GNU/Linux i386. */ | |
430eaf2e | 88 | static int amd64_linux_gregset32_reg_offset[] = |
60fac5b8 | 89 | { |
f5859b4d MK |
90 | RAX * 8, RCX * 8, /* %eax, %ecx */ |
91 | RDX * 8, RBX * 8, /* %edx, %ebx */ | |
92 | RSP * 8, RBP * 8, /* %esp, %ebp */ | |
93 | RSI * 8, RDI * 8, /* %esi, %edi */ | |
94 | RIP * 8, EFLAGS * 8, /* %eip, %eflags */ | |
95 | CS * 8, SS * 8, /* %cs, %ss */ | |
96 | DS * 8, ES * 8, /* %ds, %es */ | |
97 | FS * 8, GS * 8, /* %fs, %gs */ | |
60fac5b8 MK |
98 | -1, -1, -1, -1, -1, -1, -1, -1, |
99 | -1, -1, -1, -1, -1, -1, -1, -1, | |
100 | -1, -1, -1, -1, -1, -1, -1, -1, -1, | |
f5859b4d | 101 | ORIG_RAX * 8 /* "orig_eax" */ |
60fac5b8 | 102 | }; |
53e95fcf JS |
103 | \f |
104 | ||
105 | /* Transfering the general-purpose registers between GDB, inferiors | |
106 | and core files. */ | |
107 | ||
60fac5b8 | 108 | /* Fill GDB's register cache with the general-purpose register values |
53e95fcf JS |
109 | in *GREGSETP. */ |
110 | ||
111 | void | |
7f7fe91e | 112 | supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp) |
53e95fcf | 113 | { |
7f7fe91e | 114 | amd64_supply_native_gregset (regcache, gregsetp, -1); |
53e95fcf JS |
115 | } |
116 | ||
60fac5b8 MK |
117 | /* Fill register REGNUM (if it is a general-purpose register) in |
118 | *GREGSETP with the value in GDB's register cache. If REGNUM is -1, | |
53e95fcf JS |
119 | do this for all registers. */ |
120 | ||
121 | void | |
7f7fe91e UW |
122 | fill_gregset (const struct regcache *regcache, |
123 | elf_gregset_t *gregsetp, int regnum) | |
53e95fcf | 124 | { |
7f7fe91e | 125 | amd64_collect_native_gregset (regcache, gregsetp, regnum); |
53e95fcf JS |
126 | } |
127 | ||
53e95fcf JS |
128 | /* Transfering floating-point registers between GDB, inferiors and cores. */ |
129 | ||
60fac5b8 | 130 | /* Fill GDB's register cache with the floating-point and SSE register |
c4f35dd8 | 131 | values in *FPREGSETP. */ |
53e95fcf JS |
132 | |
133 | void | |
7f7fe91e | 134 | supply_fpregset (struct regcache *regcache, const elf_fpregset_t *fpregsetp) |
53e95fcf | 135 | { |
7f7fe91e | 136 | amd64_supply_fxsave (regcache, -1, fpregsetp); |
53e95fcf JS |
137 | } |
138 | ||
8dda9770 | 139 | /* Fill register REGNUM (if it is a floating-point or SSE register) in |
60fac5b8 | 140 | *FPREGSETP with the value in GDB's register cache. If REGNUM is |
c4f35dd8 | 141 | -1, do this for all registers. */ |
53e95fcf JS |
142 | |
143 | void | |
7f7fe91e UW |
144 | fill_fpregset (const struct regcache *regcache, |
145 | elf_fpregset_t *fpregsetp, int regnum) | |
53e95fcf | 146 | { |
7f7fe91e | 147 | amd64_collect_fxsave (regcache, regnum, fpregsetp); |
53e95fcf | 148 | } |
53e95fcf JS |
149 | \f |
150 | ||
151 | /* Transferring arbitrary registers between GDB and inferior. */ | |
152 | ||
60fac5b8 | 153 | /* Fetch register REGNUM from the child process. If REGNUM is -1, do |
53e95fcf JS |
154 | this for all registers (including the floating point and SSE |
155 | registers). */ | |
156 | ||
10d6c8cd | 157 | static void |
56be3814 | 158 | amd64_linux_fetch_inferior_registers (struct regcache *regcache, int regnum) |
53e95fcf | 159 | { |
f8028488 | 160 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
53e95fcf JS |
161 | int tid; |
162 | ||
a4b6fc86 | 163 | /* GNU/Linux LWP ID's are process ID's. */ |
c4f35dd8 MK |
164 | tid = TIDGET (inferior_ptid); |
165 | if (tid == 0) | |
166 | tid = PIDGET (inferior_ptid); /* Not a threaded program. */ | |
53e95fcf | 167 | |
f8028488 | 168 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 169 | { |
99679982 MK |
170 | elf_gregset_t regs; |
171 | ||
172 | if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) | |
edefbb7c | 173 | perror_with_name (_("Couldn't get registers")); |
99679982 | 174 | |
56be3814 | 175 | amd64_supply_native_gregset (regcache, ®s, -1); |
60fac5b8 MK |
176 | if (regnum != -1) |
177 | return; | |
53e95fcf JS |
178 | } |
179 | ||
f8028488 | 180 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 181 | { |
99679982 | 182 | elf_fpregset_t fpregs; |
53e95fcf | 183 | |
99679982 | 184 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) |
edefbb7c | 185 | perror_with_name (_("Couldn't get floating point status")); |
99679982 | 186 | |
56be3814 | 187 | amd64_supply_fxsave (regcache, -1, &fpregs); |
99679982 | 188 | } |
53e95fcf JS |
189 | } |
190 | ||
60fac5b8 MK |
191 | /* Store register REGNUM back into the child process. If REGNUM is |
192 | -1, do this for all registers (including the floating-point and SSE | |
53e95fcf | 193 | registers). */ |
c4f35dd8 | 194 | |
10d6c8cd | 195 | static void |
56be3814 | 196 | amd64_linux_store_inferior_registers (struct regcache *regcache, int regnum) |
53e95fcf | 197 | { |
f8028488 | 198 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
53e95fcf JS |
199 | int tid; |
200 | ||
a4b6fc86 | 201 | /* GNU/Linux LWP ID's are process ID's. */ |
c4f35dd8 MK |
202 | tid = TIDGET (inferior_ptid); |
203 | if (tid == 0) | |
204 | tid = PIDGET (inferior_ptid); /* Not a threaded program. */ | |
53e95fcf | 205 | |
f8028488 | 206 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 207 | { |
99679982 MK |
208 | elf_gregset_t regs; |
209 | ||
210 | if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) | |
edefbb7c | 211 | perror_with_name (_("Couldn't get registers")); |
99679982 | 212 | |
56be3814 | 213 | amd64_collect_native_gregset (regcache, ®s, regnum); |
99679982 MK |
214 | |
215 | if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0) | |
edefbb7c | 216 | perror_with_name (_("Couldn't write registers")); |
99679982 | 217 | |
60fac5b8 MK |
218 | if (regnum != -1) |
219 | return; | |
53e95fcf JS |
220 | } |
221 | ||
f8028488 | 222 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
53e95fcf | 223 | { |
99679982 MK |
224 | elf_fpregset_t fpregs; |
225 | ||
226 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) | |
edefbb7c | 227 | perror_with_name (_("Couldn't get floating point status")); |
99679982 | 228 | |
56be3814 | 229 | amd64_collect_fxsave (regcache, regnum, &fpregs); |
99679982 MK |
230 | |
231 | if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0) | |
edefbb7c | 232 | perror_with_name (_("Couldn't write floating point status")); |
99679982 | 233 | |
53e95fcf JS |
234 | return; |
235 | } | |
53e95fcf JS |
236 | } |
237 | \f | |
9f0bdab8 DJ |
238 | /* Support for debug registers. */ |
239 | ||
240 | static unsigned long amd64_linux_dr[DR_CONTROL + 1]; | |
53e95fcf | 241 | |
c4f35dd8 | 242 | static unsigned long |
9f0bdab8 | 243 | amd64_linux_dr_get (ptid_t ptid, int regnum) |
c4f35dd8 MK |
244 | { |
245 | int tid; | |
246 | unsigned long value; | |
53e95fcf | 247 | |
9f0bdab8 DJ |
248 | tid = TIDGET (ptid); |
249 | if (tid == 0) | |
250 | tid = PIDGET (ptid); | |
53e95fcf | 251 | |
c4f35dd8 MK |
252 | /* FIXME: kettenis/2001-03-27: Calling perror_with_name if the |
253 | ptrace call fails breaks debugging remote targets. The correct | |
254 | way to fix this is to add the hardware breakpoint and watchpoint | |
9f0bdab8 | 255 | stuff to the target vector. For now, just return zero if the |
c4f35dd8 MK |
256 | ptrace call fails. */ |
257 | errno = 0; | |
9f0bdab8 | 258 | value = ptrace (PTRACE_PEEKUSER, tid, |
c4f35dd8 MK |
259 | offsetof (struct user, u_debugreg[regnum]), 0); |
260 | if (errno != 0) | |
261 | #if 0 | |
edefbb7c | 262 | perror_with_name (_("Couldn't read debug register")); |
c4f35dd8 MK |
263 | #else |
264 | return 0; | |
53e95fcf JS |
265 | #endif |
266 | ||
c4f35dd8 MK |
267 | return value; |
268 | } | |
53e95fcf JS |
269 | |
270 | static void | |
9f0bdab8 | 271 | amd64_linux_dr_set (ptid_t ptid, int regnum, unsigned long value) |
53e95fcf | 272 | { |
c4f35dd8 | 273 | int tid; |
53e95fcf | 274 | |
9f0bdab8 DJ |
275 | tid = TIDGET (ptid); |
276 | if (tid == 0) | |
277 | tid = PIDGET (ptid); | |
53e95fcf | 278 | |
c4f35dd8 | 279 | errno = 0; |
9f0bdab8 DJ |
280 | ptrace (PTRACE_POKEUSER, tid, |
281 | offsetof (struct user, u_debugreg[regnum]), value); | |
c4f35dd8 | 282 | if (errno != 0) |
edefbb7c | 283 | perror_with_name (_("Couldn't write debug register")); |
c4f35dd8 | 284 | } |
53e95fcf | 285 | |
c4f35dd8 | 286 | void |
430eaf2e | 287 | amd64_linux_dr_set_control (unsigned long control) |
c4f35dd8 | 288 | { |
9f0bdab8 DJ |
289 | struct lwp_info *lp; |
290 | ptid_t ptid; | |
291 | ||
292 | amd64_linux_dr[DR_CONTROL] = control; | |
293 | ALL_LWPS (lp, ptid) | |
294 | amd64_linux_dr_set (ptid, DR_CONTROL, control); | |
c4f35dd8 | 295 | } |
53e95fcf | 296 | |
c4f35dd8 | 297 | void |
430eaf2e | 298 | amd64_linux_dr_set_addr (int regnum, CORE_ADDR addr) |
b7c4cbf8 | 299 | { |
9f0bdab8 DJ |
300 | struct lwp_info *lp; |
301 | ptid_t ptid; | |
302 | ||
c4f35dd8 MK |
303 | gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR); |
304 | ||
9f0bdab8 DJ |
305 | amd64_linux_dr[DR_FIRSTADDR + regnum] = addr; |
306 | ALL_LWPS (lp, ptid) | |
307 | amd64_linux_dr_set (ptid, DR_FIRSTADDR + regnum, addr); | |
b7c4cbf8 AJ |
308 | } |
309 | ||
53e95fcf | 310 | void |
430eaf2e | 311 | amd64_linux_dr_reset_addr (int regnum) |
53e95fcf | 312 | { |
9f0bdab8 | 313 | amd64_linux_dr_set_addr (regnum, 0); |
53e95fcf | 314 | } |
8cfda98c | 315 | |
c4f35dd8 | 316 | unsigned long |
430eaf2e | 317 | amd64_linux_dr_get_status (void) |
8cfda98c | 318 | { |
9f0bdab8 DJ |
319 | return amd64_linux_dr_get (inferior_ptid, DR_STATUS); |
320 | } | |
321 | ||
322 | static void | |
323 | amd64_linux_new_thread (ptid_t ptid) | |
324 | { | |
325 | int i; | |
326 | ||
327 | for (i = DR_FIRSTADDR; i <= DR_LASTADDR; i++) | |
328 | amd64_linux_dr_set (ptid, i, amd64_linux_dr[i]); | |
329 | ||
330 | amd64_linux_dr_set (ptid, DR_CONTROL, amd64_linux_dr[DR_CONTROL]); | |
8cfda98c | 331 | } |
5bca7895 | 332 | \f |
c43af07c | 333 | |
50d71875 AC |
334 | /* This function is called by libthread_db as part of its handling of |
335 | a request for a thread's local storage address. */ | |
336 | ||
5bca7895 | 337 | ps_err_e |
c43af07c EZ |
338 | ps_get_thread_area (const struct ps_prochandle *ph, |
339 | lwpid_t lwpid, int idx, void **base) | |
340 | { | |
50d71875 AC |
341 | if (gdbarch_ptr_bit (current_gdbarch) == 32) |
342 | { | |
343 | /* The full structure is found in <asm-i386/ldt.h>. The second | |
344 | integer is the LDT's base_address and that is used to locate | |
345 | the thread's local storage. See i386-linux-nat.c more | |
346 | info. */ | |
347 | unsigned int desc[4]; | |
348 | ||
349 | /* This code assumes that "int" is 32 bits and that | |
350 | GET_THREAD_AREA returns no more than 4 int values. */ | |
351 | gdb_assert (sizeof (int) == 4); | |
352 | #ifndef PTRACE_GET_THREAD_AREA | |
353 | #define PTRACE_GET_THREAD_AREA 25 | |
354 | #endif | |
355 | if (ptrace (PTRACE_GET_THREAD_AREA, | |
356 | lwpid, (void *) (long) idx, (unsigned long) &desc) < 0) | |
357 | return PS_ERR; | |
358 | ||
359 | /* Extend the value to 64 bits. Here it's assumed that a "long" | |
360 | and a "void *" are the same. */ | |
361 | (*base) = (void *) (long) desc[1]; | |
362 | return PS_OK; | |
363 | } | |
364 | else | |
365 | { | |
366 | /* This definition comes from prctl.h, but some kernels may not | |
367 | have it. */ | |
c43af07c EZ |
368 | #ifndef PTRACE_ARCH_PRCTL |
369 | #define PTRACE_ARCH_PRCTL 30 | |
370 | #endif | |
50d71875 AC |
371 | /* FIXME: ezannoni-2003-07-09 see comment above about include |
372 | file order. We could be getting bogus values for these two. */ | |
373 | gdb_assert (FS < ELF_NGREG); | |
374 | gdb_assert (GS < ELF_NGREG); | |
375 | switch (idx) | |
376 | { | |
377 | case FS: | |
378 | if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_FS) == 0) | |
379 | return PS_OK; | |
380 | break; | |
381 | case GS: | |
382 | if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_GS) == 0) | |
383 | return PS_OK; | |
384 | break; | |
385 | default: /* Should not happen. */ | |
386 | return PS_BADADDR; | |
387 | } | |
c43af07c | 388 | } |
b6d42148 | 389 | return PS_ERR; /* ptrace failed. */ |
c43af07c | 390 | } |
5bca7895 | 391 | \f |
c43af07c | 392 | |
10d6c8cd DJ |
393 | static void (*super_post_startup_inferior) (ptid_t ptid); |
394 | ||
395 | static void | |
396 | amd64_linux_child_post_startup_inferior (ptid_t ptid) | |
4056d258 ML |
397 | { |
398 | i386_cleanup_dregs (); | |
10d6c8cd | 399 | super_post_startup_inferior (ptid); |
4056d258 | 400 | } |
60fac5b8 MK |
401 | \f |
402 | ||
5b009018 PA |
403 | /* When GDB is built as a 64-bit application on linux, the |
404 | PTRACE_GETSIGINFO data is always presented in 64-bit layout. Since | |
405 | debugging a 32-bit inferior with a 64-bit GDB should look the same | |
406 | as debugging it with a 32-bit GDB, we do the 32-bit <-> 64-bit | |
407 | conversion in-place ourselves. */ | |
408 | ||
409 | /* These types below (compat_*) define a siginfo type that is layout | |
410 | compatible with the siginfo type exported by the 32-bit userspace | |
411 | support. */ | |
412 | ||
413 | typedef int compat_int_t; | |
414 | typedef unsigned int compat_uptr_t; | |
415 | ||
416 | typedef int compat_time_t; | |
417 | typedef int compat_timer_t; | |
418 | typedef int compat_clock_t; | |
419 | ||
420 | struct compat_timeval | |
421 | { | |
422 | compat_time_t tv_sec; | |
423 | int tv_usec; | |
424 | }; | |
425 | ||
426 | typedef union compat_sigval | |
427 | { | |
428 | compat_int_t sival_int; | |
429 | compat_uptr_t sival_ptr; | |
430 | } compat_sigval_t; | |
431 | ||
432 | typedef struct compat_siginfo | |
433 | { | |
434 | int si_signo; | |
435 | int si_errno; | |
436 | int si_code; | |
437 | ||
438 | union | |
439 | { | |
440 | int _pad[((128 / sizeof (int)) - 3)]; | |
441 | ||
442 | /* kill() */ | |
443 | struct | |
444 | { | |
445 | unsigned int _pid; | |
446 | unsigned int _uid; | |
447 | } _kill; | |
448 | ||
449 | /* POSIX.1b timers */ | |
450 | struct | |
451 | { | |
452 | compat_timer_t _tid; | |
453 | int _overrun; | |
454 | compat_sigval_t _sigval; | |
455 | } _timer; | |
456 | ||
457 | /* POSIX.1b signals */ | |
458 | struct | |
459 | { | |
460 | unsigned int _pid; | |
461 | unsigned int _uid; | |
462 | compat_sigval_t _sigval; | |
463 | } _rt; | |
464 | ||
465 | /* SIGCHLD */ | |
466 | struct | |
467 | { | |
468 | unsigned int _pid; | |
469 | unsigned int _uid; | |
470 | int _status; | |
471 | compat_clock_t _utime; | |
472 | compat_clock_t _stime; | |
473 | } _sigchld; | |
474 | ||
475 | /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ | |
476 | struct | |
477 | { | |
478 | unsigned int _addr; | |
479 | } _sigfault; | |
480 | ||
481 | /* SIGPOLL */ | |
482 | struct | |
483 | { | |
484 | int _band; | |
485 | int _fd; | |
486 | } _sigpoll; | |
487 | } _sifields; | |
488 | } compat_siginfo_t; | |
489 | ||
490 | #define cpt_si_pid _sifields._kill._pid | |
491 | #define cpt_si_uid _sifields._kill._uid | |
492 | #define cpt_si_timerid _sifields._timer._tid | |
493 | #define cpt_si_overrun _sifields._timer._overrun | |
494 | #define cpt_si_status _sifields._sigchld._status | |
495 | #define cpt_si_utime _sifields._sigchld._utime | |
496 | #define cpt_si_stime _sifields._sigchld._stime | |
497 | #define cpt_si_ptr _sifields._rt._sigval.sival_ptr | |
498 | #define cpt_si_addr _sifields._sigfault._addr | |
499 | #define cpt_si_band _sifields._sigpoll._band | |
500 | #define cpt_si_fd _sifields._sigpoll._fd | |
501 | ||
502 | static void | |
503 | compat_siginfo_from_siginfo (compat_siginfo_t *to, siginfo_t *from) | |
504 | { | |
505 | memset (to, 0, sizeof (*to)); | |
506 | ||
507 | to->si_signo = from->si_signo; | |
508 | to->si_errno = from->si_errno; | |
509 | to->si_code = from->si_code; | |
510 | ||
511 | if (to->si_code < 0) | |
512 | { | |
513 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
514 | } | |
515 | else if (to->si_code == SI_USER) | |
516 | { | |
517 | to->cpt_si_pid = from->si_pid; | |
518 | to->cpt_si_uid = from->si_uid; | |
519 | } | |
520 | else if (to->si_code == SI_TIMER) | |
521 | { | |
522 | to->cpt_si_timerid = from->si_timerid; | |
523 | to->cpt_si_overrun = from->si_overrun; | |
524 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
525 | } | |
526 | else | |
527 | { | |
528 | switch (to->si_signo) | |
529 | { | |
530 | case SIGCHLD: | |
531 | to->cpt_si_pid = from->si_pid; | |
532 | to->cpt_si_uid = from->si_uid; | |
533 | to->cpt_si_status = from->si_status; | |
534 | to->cpt_si_utime = from->si_utime; | |
535 | to->cpt_si_stime = from->si_stime; | |
536 | break; | |
537 | case SIGILL: | |
538 | case SIGFPE: | |
539 | case SIGSEGV: | |
540 | case SIGBUS: | |
541 | to->cpt_si_addr = (intptr_t) from->si_addr; | |
542 | break; | |
543 | case SIGPOLL: | |
544 | to->cpt_si_band = from->si_band; | |
545 | to->cpt_si_fd = from->si_fd; | |
546 | break; | |
547 | default: | |
548 | to->cpt_si_pid = from->si_pid; | |
549 | to->cpt_si_uid = from->si_uid; | |
550 | to->cpt_si_ptr = (intptr_t) from->si_ptr; | |
551 | break; | |
552 | } | |
553 | } | |
554 | } | |
555 | ||
556 | static void | |
557 | siginfo_from_compat_siginfo (siginfo_t *to, compat_siginfo_t *from) | |
558 | { | |
559 | memset (to, 0, sizeof (*to)); | |
560 | ||
561 | to->si_signo = from->si_signo; | |
562 | to->si_errno = from->si_errno; | |
563 | to->si_code = from->si_code; | |
564 | ||
565 | if (to->si_code < 0) | |
566 | { | |
567 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; | |
568 | } | |
569 | else if (to->si_code == SI_USER) | |
570 | { | |
571 | to->si_pid = from->cpt_si_pid; | |
572 | to->si_uid = from->cpt_si_uid; | |
573 | } | |
574 | else if (to->si_code == SI_TIMER) | |
575 | { | |
576 | to->si_timerid = from->cpt_si_timerid; | |
577 | to->si_overrun = from->cpt_si_overrun; | |
578 | to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; | |
579 | } | |
580 | else | |
581 | { | |
582 | switch (to->si_signo) | |
583 | { | |
584 | case SIGCHLD: | |
585 | to->si_pid = from->cpt_si_pid; | |
586 | to->si_uid = from->cpt_si_uid; | |
587 | to->si_status = from->cpt_si_status; | |
588 | to->si_utime = from->cpt_si_utime; | |
589 | to->si_stime = from->cpt_si_stime; | |
590 | break; | |
591 | case SIGILL: | |
592 | case SIGFPE: | |
593 | case SIGSEGV: | |
594 | case SIGBUS: | |
595 | to->si_addr = (void *) (intptr_t) from->cpt_si_addr; | |
596 | break; | |
597 | case SIGPOLL: | |
598 | to->si_band = from->cpt_si_band; | |
599 | to->si_fd = from->cpt_si_fd; | |
600 | break; | |
601 | default: | |
602 | to->si_pid = from->cpt_si_pid; | |
603 | to->si_uid = from->cpt_si_uid; | |
604 | to->si_ptr = (void* ) (intptr_t) from->cpt_si_ptr; | |
605 | break; | |
606 | } | |
607 | } | |
608 | } | |
609 | ||
610 | /* Convert a native/host siginfo object, into/from the siginfo in the | |
611 | layout of the inferiors' architecture. Returns true if any | |
612 | conversion was done; false otherwise. If DIRECTION is 1, then copy | |
613 | from INF to NATIVE. If DIRECTION is 0, copy from NATIVE to | |
614 | INF. */ | |
615 | ||
616 | static int | |
617 | amd64_linux_siginfo_fixup (struct siginfo *native, gdb_byte *inf, int direction) | |
618 | { | |
619 | /* Is the inferior 32-bit? If so, then do fixup the siginfo | |
620 | object. */ | |
621 | if (gdbarch_addr_bit (get_frame_arch (get_current_frame ())) == 32) | |
622 | { | |
623 | gdb_assert (sizeof (struct siginfo) == sizeof (compat_siginfo_t)); | |
624 | ||
625 | if (direction == 0) | |
626 | compat_siginfo_from_siginfo ((struct compat_siginfo *) inf, native); | |
627 | else | |
628 | siginfo_from_compat_siginfo (native, (struct compat_siginfo *) inf); | |
629 | ||
630 | return 1; | |
631 | } | |
632 | else | |
633 | return 0; | |
634 | } | |
635 | ||
60fac5b8 | 636 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
430eaf2e | 637 | void _initialize_amd64_linux_nat (void); |
60fac5b8 MK |
638 | |
639 | void | |
430eaf2e | 640 | _initialize_amd64_linux_nat (void) |
60fac5b8 | 641 | { |
10d6c8cd DJ |
642 | struct target_ops *t; |
643 | ||
430eaf2e | 644 | amd64_native_gregset32_reg_offset = amd64_linux_gregset32_reg_offset; |
60fac5b8 | 645 | amd64_native_gregset32_num_regs = I386_LINUX_NUM_REGS; |
430eaf2e | 646 | amd64_native_gregset64_reg_offset = amd64_linux_gregset64_reg_offset; |
8695c747 | 647 | amd64_native_gregset64_num_regs = AMD64_LINUX_NUM_REGS; |
60fac5b8 | 648 | |
430eaf2e | 649 | gdb_assert (ARRAY_SIZE (amd64_linux_gregset32_reg_offset) |
60fac5b8 | 650 | == amd64_native_gregset32_num_regs); |
430eaf2e | 651 | gdb_assert (ARRAY_SIZE (amd64_linux_gregset64_reg_offset) |
60fac5b8 | 652 | == amd64_native_gregset64_num_regs); |
10d6c8cd DJ |
653 | |
654 | /* Fill in the generic GNU/Linux methods. */ | |
655 | t = linux_target (); | |
656 | ||
c03374d5 DJ |
657 | i386_use_watchpoints (t); |
658 | ||
10d6c8cd DJ |
659 | /* Override the GNU/Linux inferior startup hook. */ |
660 | super_post_startup_inferior = t->to_post_startup_inferior; | |
661 | t->to_post_startup_inferior = amd64_linux_child_post_startup_inferior; | |
662 | ||
663 | /* Add our register access methods. */ | |
664 | t->to_fetch_registers = amd64_linux_fetch_inferior_registers; | |
665 | t->to_store_registers = amd64_linux_store_inferior_registers; | |
666 | ||
667 | /* Register the target. */ | |
f973ed9c | 668 | linux_nat_add_target (t); |
9f0bdab8 | 669 | linux_nat_set_new_thread (t, amd64_linux_new_thread); |
5b009018 | 670 | linux_nat_set_siginfo_fixup (t, amd64_linux_siginfo_fixup); |
60fac5b8 | 671 | } |