Commit | Line | Data |
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e2879ccb MK |
1 | /* Target-dependent code for OpenBSD/amd64. |
2 | ||
6aba47ca | 3 | Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc. |
e2879ccb MK |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
e2879ccb MK |
21 | |
22 | #include "defs.h" | |
23 | #include "frame.h" | |
f6acec62 | 24 | #include "frame-unwind.h" |
e2879ccb | 25 | #include "gdbcore.h" |
911bc6ee MK |
26 | #include "symtab.h" |
27 | #include "objfiles.h" | |
e2879ccb | 28 | #include "osabi.h" |
d78749b4 | 29 | #include "regcache.h" |
30b344b1 | 30 | #include "regset.h" |
e2879ccb | 31 | #include "target.h" |
f6acec62 | 32 | #include "trad-frame.h" |
e2879ccb MK |
33 | |
34 | #include "gdb_assert.h" | |
35 | #include "gdb_string.h" | |
36 | ||
85be1ca6 | 37 | #include "amd64-tdep.h" |
30b344b1 | 38 | #include "i387-tdep.h" |
7e654c37 | 39 | #include "solib-svr4.h" |
d78749b4 | 40 | #include "bsd-uthread.h" |
30b344b1 MK |
41 | |
42 | /* Support for core dumps. */ | |
43 | ||
44 | static void | |
45 | amd64obsd_supply_regset (const struct regset *regset, | |
46 | struct regcache *regcache, int regnum, | |
47 | const void *regs, size_t len) | |
48 | { | |
9ea75c57 | 49 | const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch); |
30b344b1 MK |
50 | |
51 | gdb_assert (len >= tdep->sizeof_gregset + I387_SIZEOF_FXSAVE); | |
52 | ||
53 | i386_supply_gregset (regset, regcache, regnum, regs, tdep->sizeof_gregset); | |
d8de1ef7 MK |
54 | amd64_supply_fxsave (regcache, regnum, |
55 | ((const gdb_byte *)regs) + tdep->sizeof_gregset); | |
30b344b1 MK |
56 | } |
57 | ||
58 | static const struct regset * | |
59 | amd64obsd_regset_from_core_section (struct gdbarch *gdbarch, | |
60 | const char *sect_name, size_t sect_size) | |
61 | { | |
62 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
63 | ||
64 | /* OpenBSD core dumps don't use seperate register sets for the | |
65 | general-purpose and floating-point registers. */ | |
66 | ||
67 | if (strcmp (sect_name, ".reg") == 0 | |
68 | && sect_size >= tdep->sizeof_gregset + I387_SIZEOF_FXSAVE) | |
69 | { | |
70 | if (tdep->gregset == NULL) | |
9ea75c57 | 71 | tdep->gregset = regset_alloc (gdbarch, amd64obsd_supply_regset, NULL); |
30b344b1 MK |
72 | return tdep->gregset; |
73 | } | |
74 | ||
75 | return NULL; | |
76 | } | |
77 | \f | |
e2879ccb MK |
78 | |
79 | /* Support for signal handlers. */ | |
80 | ||
911bc6ee | 81 | /* Default page size. */ |
e2879ccb MK |
82 | static const int amd64obsd_page_size = 4096; |
83 | ||
377d9ebd | 84 | /* Return whether the frame preceding NEXT_FRAME corresponds to an |
911bc6ee MK |
85 | OpenBSD sigtramp routine. */ |
86 | ||
e2879ccb | 87 | static int |
911bc6ee | 88 | amd64obsd_sigtramp_p (struct frame_info *next_frame) |
e2879ccb | 89 | { |
911bc6ee | 90 | CORE_ADDR pc = frame_pc_unwind (next_frame); |
e2879ccb | 91 | CORE_ADDR start_pc = (pc & ~(amd64obsd_page_size - 1)); |
d8de1ef7 | 92 | const gdb_byte sigreturn[] = |
e2879ccb MK |
93 | { |
94 | 0x48, 0xc7, 0xc0, | |
95 | 0x67, 0x00, 0x00, 0x00, /* movq $SYS_sigreturn, %rax */ | |
84d04465 | 96 | 0xcd, 0x80 /* int $0x80 */ |
e2879ccb | 97 | }; |
1c5bf419 | 98 | size_t buflen = (sizeof sigreturn) + 1; |
d8de1ef7 MK |
99 | gdb_byte *buf; |
100 | char *name; | |
911bc6ee MK |
101 | |
102 | /* If the function has a valid symbol name, it isn't a | |
103 | trampoline. */ | |
104 | find_pc_partial_function (pc, &name, NULL, NULL); | |
105 | if (name != NULL) | |
106 | return 0; | |
e2879ccb | 107 | |
911bc6ee MK |
108 | /* If the function lives in a valid section (even without a starting |
109 | point) it isn't a trampoline. */ | |
110 | if (find_pc_section (pc) != NULL) | |
e2879ccb MK |
111 | return 0; |
112 | ||
113 | /* If we can't read the instructions at START_PC, return zero. */ | |
4cd28409 | 114 | buf = alloca ((sizeof sigreturn) + 1); |
1c5bf419 | 115 | if (!safe_frame_unwind_memory (next_frame, start_pc + 6, buf, buflen)) |
e2879ccb MK |
116 | return 0; |
117 | ||
4cd28409 MK |
118 | /* Check for sigreturn(2). Depending on how the assembler encoded |
119 | the `movq %rsp, %rdi' instruction, the code starts at offset 6 or | |
120 | 7. */ | |
121 | if (memcmp (buf, sigreturn, sizeof sigreturn) | |
122 | && memcpy (buf + 1, sigreturn, sizeof sigreturn)) | |
e2879ccb MK |
123 | return 0; |
124 | ||
125 | return 1; | |
126 | } | |
127 | ||
128 | /* Assuming NEXT_FRAME is for a frame following a BSD sigtramp | |
129 | routine, return the address of the associated sigcontext structure. */ | |
130 | ||
131 | static CORE_ADDR | |
132 | amd64obsd_sigcontext_addr (struct frame_info *next_frame) | |
133 | { | |
0fe85704 MK |
134 | CORE_ADDR pc = frame_pc_unwind (next_frame); |
135 | ULONGEST offset = (pc & (amd64obsd_page_size - 1)); | |
136 | ||
e2879ccb | 137 | /* The %rsp register points at `struct sigcontext' upon entry of a |
0fe85704 MK |
138 | signal trampoline. The relevant part of the trampoline is |
139 | ||
140 | call *%rax | |
141 | movq %rsp, %rdi | |
142 | pushq %rdi | |
143 | movq $SYS_sigreturn,%rax | |
144 | int $0x80 | |
145 | ||
146 | (see /usr/src/sys/arch/amd64/amd64/locore.S). The `pushq' | |
147 | instruction clobbers %rsp, but its value is saved in `%rdi'. */ | |
148 | ||
4cd28409 | 149 | if (offset > 5) |
0fe85704 MK |
150 | return frame_unwind_register_unsigned (next_frame, AMD64_RDI_REGNUM); |
151 | else | |
152 | return frame_unwind_register_unsigned (next_frame, AMD64_RSP_REGNUM); | |
e2879ccb MK |
153 | } |
154 | \f | |
155 | /* OpenBSD 3.5 or later. */ | |
156 | ||
157 | /* Mapping between the general-purpose registers in `struct reg' | |
158 | format and GDB's register cache layout. */ | |
159 | ||
30b344b1 | 160 | /* From <machine/reg.h>. */ |
e2879ccb MK |
161 | int amd64obsd_r_reg_offset[] = |
162 | { | |
163 | 14 * 8, /* %rax */ | |
164 | 13 * 8, /* %rbx */ | |
165 | 3 * 8, /* %rcx */ | |
166 | 2 * 8, /* %rdx */ | |
167 | 1 * 8, /* %rsi */ | |
168 | 0 * 8, /* %rdi */ | |
169 | 12 * 8, /* %rbp */ | |
170 | 15 * 8, /* %rsp */ | |
171 | 4 * 8, /* %r8 .. */ | |
172 | 5 * 8, | |
173 | 6 * 8, | |
174 | 7 * 8, | |
175 | 8 * 8, | |
176 | 9 * 8, | |
177 | 10 * 8, | |
178 | 11 * 8, /* ... %r15 */ | |
179 | 16 * 8, /* %rip */ | |
180 | 17 * 8, /* %eflags */ | |
181 | 18 * 8, /* %cs */ | |
182 | 19 * 8, /* %ss */ | |
183 | 20 * 8, /* %ds */ | |
184 | 21 * 8, /* %es */ | |
185 | 22 * 8, /* %fs */ | |
186 | 23 * 8 /* %gs */ | |
187 | }; | |
188 | ||
30b344b1 | 189 | /* From <machine/signal.h>. */ |
e2879ccb MK |
190 | static int amd64obsd_sc_reg_offset[] = |
191 | { | |
192 | 14 * 8, /* %rax */ | |
193 | 13 * 8, /* %rbx */ | |
194 | 3 * 8, /* %rcx */ | |
195 | 2 * 8, /* %rdx */ | |
196 | 1 * 8, /* %rsi */ | |
197 | 0 * 8, /* %rdi */ | |
198 | 12 * 8, /* %rbp */ | |
199 | 24 * 8, /* %rsp */ | |
200 | 4 * 8, /* %r8 ... */ | |
201 | 5 * 8, | |
202 | 6 * 8, | |
203 | 7 * 8, | |
204 | 8 * 8, | |
205 | 9 * 8, | |
206 | 10 * 8, | |
207 | 11 * 8, /* ... %r15 */ | |
208 | 21 * 8, /* %rip */ | |
209 | 23 * 8, /* %eflags */ | |
210 | 22 * 8, /* %cs */ | |
211 | 25 * 8, /* %ss */ | |
212 | 18 * 8, /* %ds */ | |
213 | 17 * 8, /* %es */ | |
214 | 16 * 8, /* %fs */ | |
215 | 15 * 8 /* %gs */ | |
216 | }; | |
217 | ||
d78749b4 MK |
218 | /* From /usr/src/lib/libpthread/arch/amd64/uthread_machdep.c. */ |
219 | static int amd64obsd_uthread_reg_offset[] = | |
220 | { | |
221 | 19 * 8, /* %rax */ | |
222 | 16 * 8, /* %rbx */ | |
223 | 18 * 8, /* %rcx */ | |
224 | 17 * 8, /* %rdx */ | |
225 | 14 * 8, /* %rsi */ | |
226 | 13 * 8, /* %rdi */ | |
227 | 15 * 8, /* %rbp */ | |
228 | -1, /* %rsp */ | |
229 | 12 * 8, /* %r8 ... */ | |
230 | 11 * 8, | |
231 | 10 * 8, | |
232 | 9 * 8, | |
233 | 8 * 8, | |
234 | 7 * 8, | |
235 | 6 * 8, | |
236 | 5 * 8, /* ... %r15 */ | |
237 | 20 * 8, /* %rip */ | |
238 | 4 * 8, /* %eflags */ | |
239 | 21 * 8, /* %cs */ | |
240 | -1, /* %ss */ | |
241 | 3 * 8, /* %ds */ | |
242 | 2 * 8, /* %es */ | |
243 | 1 * 8, /* %fs */ | |
244 | 0 * 8 /* %gs */ | |
245 | }; | |
246 | ||
247 | /* Offset within the thread structure where we can find the saved | |
248 | stack pointer (%esp). */ | |
249 | #define AMD64OBSD_UTHREAD_RSP_OFFSET 400 | |
250 | ||
251 | static void | |
252 | amd64obsd_supply_uthread (struct regcache *regcache, | |
253 | int regnum, CORE_ADDR addr) | |
254 | { | |
255 | CORE_ADDR sp_addr = addr + AMD64OBSD_UTHREAD_RSP_OFFSET; | |
256 | CORE_ADDR sp = 0; | |
257 | gdb_byte buf[8]; | |
258 | int i; | |
259 | ||
260 | gdb_assert (regnum >= -1); | |
261 | ||
262 | if (regnum == -1 || regnum == AMD64_RSP_REGNUM) | |
263 | { | |
264 | int offset; | |
265 | ||
266 | /* Fetch stack pointer from thread structure. */ | |
267 | sp = read_memory_unsigned_integer (sp_addr, 8); | |
268 | ||
269 | /* Adjust the stack pointer such that it looks as if we just | |
270 | returned from _thread_machdep_switch. */ | |
271 | offset = amd64obsd_uthread_reg_offset[AMD64_RIP_REGNUM] + 8; | |
272 | store_unsigned_integer (buf, 8, sp + offset); | |
273 | regcache_raw_supply (regcache, AMD64_RSP_REGNUM, buf); | |
274 | } | |
275 | ||
276 | for (i = 0; i < ARRAY_SIZE (amd64obsd_uthread_reg_offset); i++) | |
277 | { | |
278 | if (amd64obsd_uthread_reg_offset[i] != -1 | |
279 | && (regnum == -1 || regnum == i)) | |
280 | { | |
281 | /* Fetch stack pointer from thread structure (if we didn't | |
282 | do so already). */ | |
283 | if (sp == 0) | |
284 | sp = read_memory_unsigned_integer (sp_addr, 8); | |
285 | ||
286 | /* Read the saved register from the stack frame. */ | |
287 | read_memory (sp + amd64obsd_uthread_reg_offset[i], buf, 8); | |
288 | regcache_raw_supply (regcache, i, buf); | |
289 | } | |
290 | } | |
291 | } | |
292 | ||
293 | static void | |
294 | amd64obsd_collect_uthread (const struct regcache *regcache, | |
295 | int regnum, CORE_ADDR addr) | |
296 | { | |
297 | CORE_ADDR sp_addr = addr + AMD64OBSD_UTHREAD_RSP_OFFSET; | |
298 | CORE_ADDR sp = 0; | |
299 | gdb_byte buf[8]; | |
300 | int i; | |
301 | ||
302 | gdb_assert (regnum >= -1); | |
303 | ||
304 | if (regnum == -1 || regnum == AMD64_RSP_REGNUM) | |
305 | { | |
306 | int offset; | |
307 | ||
308 | /* Calculate the stack pointer (frame pointer) that will be | |
309 | stored into the thread structure. */ | |
310 | offset = amd64obsd_uthread_reg_offset[AMD64_RIP_REGNUM] + 8; | |
311 | regcache_raw_collect (regcache, AMD64_RSP_REGNUM, buf); | |
312 | sp = extract_unsigned_integer (buf, 8) - offset; | |
313 | ||
314 | /* Store the stack pointer. */ | |
315 | write_memory_unsigned_integer (sp_addr, 8, sp); | |
316 | ||
317 | /* The stack pointer was (potentially) modified. Make sure we | |
318 | build a proper stack frame. */ | |
319 | regnum = -1; | |
320 | } | |
321 | ||
322 | for (i = 0; i < ARRAY_SIZE (amd64obsd_uthread_reg_offset); i++) | |
323 | { | |
324 | if (amd64obsd_uthread_reg_offset[i] != -1 | |
325 | && (regnum == -1 || regnum == i)) | |
326 | { | |
327 | /* Fetch stack pointer from thread structure (if we didn't | |
328 | calculate it already). */ | |
329 | if (sp == 0) | |
330 | sp = read_memory_unsigned_integer (sp_addr, 8); | |
331 | ||
332 | /* Write the register into the stack frame. */ | |
333 | regcache_raw_collect (regcache, i, buf); | |
334 | write_memory (sp + amd64obsd_uthread_reg_offset[i], buf, 8); | |
335 | } | |
336 | } | |
337 | } | |
f6acec62 MK |
338 | /* Kernel debugging support. */ |
339 | ||
340 | /* From <machine/frame.h>. Easy since `struct trapframe' matches | |
341 | `struct sigcontext'. */ | |
342 | #define amd64obsd_tf_reg_offset amd64obsd_sc_reg_offset | |
343 | ||
344 | static struct trad_frame_cache * | |
345 | amd64obsd_trapframe_cache(struct frame_info *next_frame, void **this_cache) | |
346 | { | |
347 | struct trad_frame_cache *cache; | |
348 | CORE_ADDR func, sp, addr; | |
349 | ULONGEST cs; | |
350 | char *name; | |
351 | int i; | |
352 | ||
353 | if (*this_cache) | |
354 | return *this_cache; | |
355 | ||
356 | cache = trad_frame_cache_zalloc (next_frame); | |
357 | *this_cache = cache; | |
358 | ||
93d42b30 DJ |
359 | /* NORMAL_FRAME matches the type in amd64obsd_trapframe_unwind, but |
360 | SIGTRAMP_FRAME might be more appropriate. */ | |
361 | func = frame_func_unwind (next_frame, NORMAL_FRAME); | |
f6acec62 MK |
362 | sp = frame_unwind_register_unsigned (next_frame, AMD64_RSP_REGNUM); |
363 | ||
364 | find_pc_partial_function (func, &name, NULL, NULL); | |
6d566cff | 365 | if (name && strncmp (name, "Xintr", 5) == 0) |
f6acec62 MK |
366 | addr = sp + 8; /* It's an interrupt frame. */ |
367 | else | |
368 | addr = sp; | |
369 | ||
370 | for (i = 0; i < ARRAY_SIZE (amd64obsd_tf_reg_offset); i++) | |
371 | if (amd64obsd_tf_reg_offset[i] != -1) | |
372 | trad_frame_set_reg_addr (cache, i, addr + amd64obsd_tf_reg_offset[i]); | |
373 | ||
374 | /* Read %cs from trap frame. */ | |
7238f002 | 375 | addr += amd64obsd_tf_reg_offset[AMD64_CS_REGNUM]; |
f6acec62 MK |
376 | cs = read_memory_unsigned_integer (addr, 8); |
377 | if ((cs & I386_SEL_RPL) == I386_SEL_UPL) | |
378 | { | |
6d566cff | 379 | /* Trap from user space; terminate backtrace. */ |
f6acec62 MK |
380 | trad_frame_set_id (cache, null_frame_id); |
381 | } | |
382 | else | |
383 | { | |
384 | /* Construct the frame ID using the function start. */ | |
385 | trad_frame_set_id (cache, frame_id_build (sp + 16, func)); | |
386 | } | |
387 | ||
388 | return cache; | |
389 | } | |
390 | ||
391 | static void | |
392 | amd64obsd_trapframe_this_id (struct frame_info *next_frame, | |
393 | void **this_cache, struct frame_id *this_id) | |
394 | { | |
395 | struct trad_frame_cache *cache = | |
396 | amd64obsd_trapframe_cache (next_frame, this_cache); | |
397 | ||
398 | trad_frame_get_id (cache, this_id); | |
399 | } | |
400 | ||
401 | static void | |
402 | amd64obsd_trapframe_prev_register (struct frame_info *next_frame, | |
403 | void **this_cache, int regnum, | |
404 | int *optimizedp, enum lval_type *lvalp, | |
405 | CORE_ADDR *addrp, int *realnump, | |
406 | gdb_byte *valuep) | |
407 | { | |
408 | struct trad_frame_cache *cache = | |
409 | amd64obsd_trapframe_cache (next_frame, this_cache); | |
410 | ||
411 | trad_frame_get_register (cache, next_frame, regnum, | |
412 | optimizedp, lvalp, addrp, realnump, valuep); | |
413 | } | |
414 | ||
415 | static int | |
416 | amd64obsd_trapframe_sniffer (const struct frame_unwind *self, | |
417 | struct frame_info *next_frame, | |
418 | void **this_prologue_cache) | |
419 | { | |
420 | ULONGEST cs; | |
421 | char *name; | |
422 | ||
e5cc6d11 | 423 | /* Check Current Privilege Level and bail out if we're not executing |
6d566cff | 424 | in kernel space. */ |
f6acec62 MK |
425 | cs = frame_unwind_register_unsigned (next_frame, AMD64_CS_REGNUM); |
426 | if ((cs & I386_SEL_RPL) == I386_SEL_UPL) | |
427 | return 0; | |
428 | ||
429 | find_pc_partial_function (frame_pc_unwind (next_frame), &name, NULL, NULL); | |
430 | return (name && ((strcmp (name, "calltrap") == 0) | |
431 | || (strcmp (name, "osyscall1") == 0) | |
432 | || (strcmp (name, "Xsyscall") == 0) | |
433 | || (strncmp (name, "Xintr", 5) == 0))); | |
434 | } | |
435 | ||
436 | static const struct frame_unwind amd64obsd_trapframe_unwind = { | |
437 | /* FIXME: kettenis/20051219: This really is more like an interrupt | |
438 | frame, but SIGTRAMP_FRAME would print <signal handler called>, | |
439 | which really is not what we want here. */ | |
440 | NORMAL_FRAME, | |
441 | amd64obsd_trapframe_this_id, | |
442 | amd64obsd_trapframe_prev_register, | |
443 | NULL, | |
444 | amd64obsd_trapframe_sniffer | |
445 | }; | |
446 | \f | |
d78749b4 | 447 | |
e2879ccb MK |
448 | static void |
449 | amd64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
450 | { | |
451 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
452 | ||
90f90721 | 453 | amd64_init_abi (info, gdbarch); |
e2879ccb | 454 | |
30b344b1 MK |
455 | /* Initialize general-purpose register set details. */ |
456 | tdep->gregset_reg_offset = amd64obsd_r_reg_offset; | |
457 | tdep->gregset_num_regs = ARRAY_SIZE (amd64obsd_r_reg_offset); | |
458 | tdep->sizeof_gregset = 24 * 8; | |
459 | ||
460 | set_gdbarch_regset_from_core_section (gdbarch, | |
461 | amd64obsd_regset_from_core_section); | |
462 | ||
e2879ccb MK |
463 | tdep->jb_pc_offset = 7 * 8; |
464 | ||
911bc6ee | 465 | tdep->sigtramp_p = amd64obsd_sigtramp_p; |
e2879ccb MK |
466 | tdep->sigcontext_addr = amd64obsd_sigcontext_addr; |
467 | tdep->sc_reg_offset = amd64obsd_sc_reg_offset; | |
468 | tdep->sc_num_regs = ARRAY_SIZE (amd64obsd_sc_reg_offset); | |
7e654c37 | 469 | |
d78749b4 MK |
470 | /* OpenBSD provides a user-level threads implementation. */ |
471 | bsd_uthread_set_supply_uthread (gdbarch, amd64obsd_supply_uthread); | |
472 | bsd_uthread_set_collect_uthread (gdbarch, amd64obsd_collect_uthread); | |
473 | ||
7e654c37 MK |
474 | /* OpenBSD uses SVR4-style shared libraries. */ |
475 | set_solib_svr4_fetch_link_map_offsets | |
476 | (gdbarch, svr4_lp64_fetch_link_map_offsets); | |
f6acec62 MK |
477 | |
478 | /* Unwind kernel trap frames correctly. */ | |
479 | frame_unwind_prepend_unwinder (gdbarch, &amd64obsd_trapframe_unwind); | |
e2879ccb MK |
480 | } |
481 | \f | |
482 | ||
483 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
484 | void _initialize_amd64obsd_tdep (void); | |
485 | ||
486 | void | |
30b344b1 | 487 | _initialize_amd64obsd_tdep (void) |
e2879ccb MK |
488 | { |
489 | /* The OpenBSD/amd64 native dependent code makes this assumption. */ | |
90f90721 | 490 | gdb_assert (ARRAY_SIZE (amd64obsd_r_reg_offset) == AMD64_NUM_GREGS); |
e2879ccb MK |
491 | |
492 | gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, | |
493 | GDB_OSABI_OPENBSD_ELF, amd64obsd_init_abi); | |
30b344b1 MK |
494 | |
495 | /* OpenBSD uses traditional (a.out) NetBSD-style core dumps. */ | |
496 | gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, | |
497 | GDB_OSABI_NETBSD_AOUT, amd64obsd_init_abi); | |
e2879ccb | 498 | } |