Commit | Line | Data |
---|---|---|
005328e3 | 1 | /* Target-dependent code for OpenBSD/i386. |
67457012 | 2 | |
197e01b6 | 3 | Copyright (C) 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002, |
a28109e0 | 4 | 2003, 2004, 2005 |
005328e3 MK |
5 | Free Software Foundation, Inc. |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
005328e3 MK |
23 | |
24 | #include "defs.h" | |
25 | #include "arch-utils.h" | |
911bc6ee | 26 | #include "frame.h" |
508fbfea | 27 | #include "frame-unwind.h" |
005328e3 MK |
28 | #include "gdbcore.h" |
29 | #include "regcache.h" | |
67457012 | 30 | #include "regset.h" |
911bc6ee MK |
31 | #include "symtab.h" |
32 | #include "objfiles.h" | |
4be87837 | 33 | #include "osabi.h" |
5d93ae8c | 34 | #include "target.h" |
508fbfea | 35 | #include "trad-frame.h" |
005328e3 | 36 | |
67457012 MK |
37 | #include "gdb_assert.h" |
38 | #include "gdb_string.h" | |
39 | ||
005328e3 MK |
40 | #include "i386-tdep.h" |
41 | #include "i387-tdep.h" | |
60a6eeb6 | 42 | #include "solib-svr4.h" |
a28109e0 | 43 | #include "bsd-uthread.h" |
005328e3 | 44 | |
5d93ae8c MK |
45 | /* Support for signal handlers. */ |
46 | ||
47 | /* Since OpenBSD 3.2, the sigtramp routine is mapped at a random page | |
48 | in virtual memory. The randomness makes it somewhat tricky to | |
49 | detect it, but fortunately we can rely on the fact that the start | |
3ed85247 MK |
50 | of the sigtramp routine is page-aligned. We recognize the |
51 | trampoline by looking for the code that invokes the sigreturn | |
52 | system call. The offset where we can find that code varies from | |
53 | release to release. | |
54 | ||
55 | By the way, the mapping mentioned above is read-only, so you cannot | |
56 | place a breakpoint in the signal trampoline. */ | |
5d93ae8c MK |
57 | |
58 | /* Default page size. */ | |
59 | static const int i386obsd_page_size = 4096; | |
60 | ||
3ed85247 MK |
61 | /* Offset for sigreturn(2). */ |
62 | static const int i386obsd_sigreturn_offset[] = { | |
63 | 0x0a, /* OpenBSD 3.2 */ | |
64 | 0x14, /* OpenBSD 3.6 */ | |
65 | 0x3a, /* OpenBSD 3.8 */ | |
66 | -1 | |
67 | }; | |
68 | ||
377d9ebd | 69 | /* Return whether the frame preceding NEXT_FRAME corresponds to an |
911bc6ee | 70 | OpenBSD sigtramp routine. */ |
5d93ae8c MK |
71 | |
72 | static int | |
911bc6ee | 73 | i386obsd_sigtramp_p (struct frame_info *next_frame) |
5d93ae8c | 74 | { |
911bc6ee | 75 | CORE_ADDR pc = frame_pc_unwind (next_frame); |
5d93ae8c | 76 | CORE_ADDR start_pc = (pc & ~(i386obsd_page_size - 1)); |
3ed85247 | 77 | /* The call sequence invoking sigreturn(2). */ |
63c0089f | 78 | const gdb_byte sigreturn[] = |
5d93ae8c MK |
79 | { |
80 | 0xb8, | |
81 | 0x67, 0x00, 0x00, 0x00, /* movl $SYS_sigreturn, %eax */ | |
82 | 0xcd, 0x80 /* int $0x80 */ | |
83 | }; | |
c822af0c | 84 | size_t buflen = sizeof sigreturn; |
3ed85247 | 85 | const int *offset; |
63c0089f MK |
86 | gdb_byte *buf; |
87 | char *name; | |
5d93ae8c | 88 | |
911bc6ee MK |
89 | /* If the function has a valid symbol name, it isn't a |
90 | trampoline. */ | |
91 | find_pc_partial_function (pc, &name, NULL, NULL); | |
92 | if (name != NULL) | |
93 | return 0; | |
94 | ||
95 | /* If the function lives in a valid section (even without a starting | |
96 | point) it isn't a trampoline. */ | |
97 | if (find_pc_section (pc) != NULL) | |
5d93ae8c MK |
98 | return 0; |
99 | ||
9c8e3411 | 100 | /* Allocate buffer. */ |
c822af0c | 101 | buf = alloca (buflen); |
9c8e3411 | 102 | |
3ed85247 MK |
103 | /* Loop over all offsets. */ |
104 | for (offset = i386obsd_sigreturn_offset; *offset != -1; offset++) | |
105 | { | |
106 | /* If we can't read the instructions, return zero. */ | |
107 | if (!safe_frame_unwind_memory (next_frame, start_pc + *offset, | |
108 | buf, buflen)) | |
109 | return 0; | |
110 | ||
111 | /* Check for sigreturn(2). */ | |
112 | if (memcmp (buf, sigreturn, buflen) == 0) | |
113 | return 1; | |
114 | } | |
9c8e3411 | 115 | |
911bc6ee | 116 | return 0; |
5d93ae8c MK |
117 | } |
118 | \f | |
119 | /* Mapping between the general-purpose registers in `struct reg' | |
120 | format and GDB's register cache layout. */ | |
121 | ||
67457012 MK |
122 | /* From <machine/reg.h>. */ |
123 | static int i386obsd_r_reg_offset[] = | |
124 | { | |
125 | 0 * 4, /* %eax */ | |
126 | 1 * 4, /* %ecx */ | |
127 | 2 * 4, /* %edx */ | |
128 | 3 * 4, /* %ebx */ | |
129 | 4 * 4, /* %esp */ | |
130 | 5 * 4, /* %ebp */ | |
131 | 6 * 4, /* %esi */ | |
132 | 7 * 4, /* %edi */ | |
133 | 8 * 4, /* %eip */ | |
134 | 9 * 4, /* %eflags */ | |
135 | 10 * 4, /* %cs */ | |
136 | 11 * 4, /* %ss */ | |
137 | 12 * 4, /* %ds */ | |
138 | 13 * 4, /* %es */ | |
139 | 14 * 4, /* %fs */ | |
140 | 15 * 4 /* %gs */ | |
141 | }; | |
005328e3 MK |
142 | |
143 | static void | |
67457012 MK |
144 | i386obsd_aout_supply_regset (const struct regset *regset, |
145 | struct regcache *regcache, int regnum, | |
146 | const void *regs, size_t len) | |
005328e3 | 147 | { |
9ea75c57 | 148 | const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch); |
3ed85247 | 149 | const gdb_byte *gregs = regs; |
67457012 MK |
150 | |
151 | gdb_assert (len >= tdep->sizeof_gregset + I387_SIZEOF_FSAVE); | |
005328e3 | 152 | |
67457012 | 153 | i386_supply_gregset (regset, regcache, regnum, regs, tdep->sizeof_gregset); |
3ed85247 | 154 | i387_supply_fsave (regcache, regnum, gregs + tdep->sizeof_gregset); |
005328e3 MK |
155 | } |
156 | ||
49cfa46f | 157 | static const struct regset * |
67457012 MK |
158 | i386obsd_aout_regset_from_core_section (struct gdbarch *gdbarch, |
159 | const char *sect_name, | |
160 | size_t sect_size) | |
005328e3 | 161 | { |
67457012 | 162 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
005328e3 | 163 | |
67457012 MK |
164 | /* OpenBSD a.out core dumps don't use seperate register sets for the |
165 | general-purpose and floating-point registers. */ | |
005328e3 | 166 | |
67457012 MK |
167 | if (strcmp (sect_name, ".reg") == 0 |
168 | && sect_size >= tdep->sizeof_gregset + I387_SIZEOF_FSAVE) | |
005328e3 | 169 | { |
67457012 | 170 | if (tdep->gregset == NULL) |
9ea75c57 MK |
171 | tdep->gregset = |
172 | regset_alloc (gdbarch, i386obsd_aout_supply_regset, NULL); | |
67457012 | 173 | return tdep->gregset; |
005328e3 MK |
174 | } |
175 | ||
67457012 | 176 | return NULL; |
005328e3 | 177 | } |
005328e3 MK |
178 | \f |
179 | ||
5d93ae8c MK |
180 | /* Sigtramp routine location for OpenBSD 3.1 and earlier releases. */ |
181 | CORE_ADDR i386obsd_sigtramp_start_addr = 0xbfbfdf20; | |
182 | CORE_ADDR i386obsd_sigtramp_end_addr = 0xbfbfdff0; | |
005328e3 MK |
183 | |
184 | /* From <machine/signal.h>. */ | |
a3386186 MK |
185 | int i386obsd_sc_reg_offset[I386_NUM_GREGS] = |
186 | { | |
187 | 10 * 4, /* %eax */ | |
188 | 9 * 4, /* %ecx */ | |
189 | 8 * 4, /* %edx */ | |
190 | 7 * 4, /* %ebx */ | |
191 | 14 * 4, /* %esp */ | |
192 | 6 * 4, /* %ebp */ | |
193 | 5 * 4, /* %esi */ | |
194 | 4 * 4, /* %edi */ | |
195 | 11 * 4, /* %eip */ | |
196 | 13 * 4, /* %eflags */ | |
197 | 12 * 4, /* %cs */ | |
198 | 15 * 4, /* %ss */ | |
199 | 3 * 4, /* %ds */ | |
200 | 2 * 4, /* %es */ | |
201 | 1 * 4, /* %fs */ | |
202 | 0 * 4 /* %gs */ | |
203 | }; | |
005328e3 | 204 | |
a28109e0 MK |
205 | /* From /usr/src/lib/libpthread/arch/i386/uthread_machdep.c. */ |
206 | static int i386obsd_uthread_reg_offset[] = | |
207 | { | |
208 | 11 * 4, /* %eax */ | |
209 | 10 * 4, /* %ecx */ | |
210 | 9 * 4, /* %edx */ | |
211 | 8 * 4, /* %ebx */ | |
212 | -1, /* %esp */ | |
213 | 6 * 4, /* %ebp */ | |
214 | 5 * 4, /* %esi */ | |
215 | 4 * 4, /* %edi */ | |
216 | 12 * 4, /* %eip */ | |
217 | -1, /* %eflags */ | |
218 | 13 * 4, /* %cs */ | |
219 | -1, /* %ss */ | |
220 | 3 * 4, /* %ds */ | |
221 | 2 * 4, /* %es */ | |
222 | 1 * 4, /* %fs */ | |
223 | 0 * 4 /* %gs */ | |
224 | }; | |
225 | ||
226 | /* Offset within the thread structure where we can find the saved | |
227 | stack pointer (%esp). */ | |
228 | #define I386OBSD_UTHREAD_ESP_OFFSET 176 | |
229 | ||
230 | static void | |
231 | i386obsd_supply_uthread (struct regcache *regcache, | |
232 | int regnum, CORE_ADDR addr) | |
233 | { | |
234 | CORE_ADDR sp_addr = addr + I386OBSD_UTHREAD_ESP_OFFSET; | |
235 | CORE_ADDR sp = 0; | |
63c0089f | 236 | gdb_byte buf[4]; |
a28109e0 MK |
237 | int i; |
238 | ||
239 | gdb_assert (regnum >= -1); | |
240 | ||
241 | if (regnum == -1 || regnum == I386_ESP_REGNUM) | |
242 | { | |
243 | int offset; | |
244 | ||
245 | /* Fetch stack pointer from thread structure. */ | |
246 | sp = read_memory_unsigned_integer (sp_addr, 4); | |
247 | ||
248 | /* Adjust the stack pointer such that it looks as if we just | |
249 | returned from _thread_machdep_switch. */ | |
250 | offset = i386obsd_uthread_reg_offset[I386_EIP_REGNUM] + 4; | |
251 | store_unsigned_integer (buf, 4, sp + offset); | |
252 | regcache_raw_supply (regcache, I386_ESP_REGNUM, buf); | |
253 | } | |
254 | ||
255 | for (i = 0; i < ARRAY_SIZE (i386obsd_uthread_reg_offset); i++) | |
256 | { | |
257 | if (i386obsd_uthread_reg_offset[i] != -1 | |
258 | && (regnum == -1 || regnum == i)) | |
259 | { | |
260 | /* Fetch stack pointer from thread structure (if we didn't | |
261 | do so already). */ | |
262 | if (sp == 0) | |
263 | sp = read_memory_unsigned_integer (sp_addr, 4); | |
264 | ||
265 | /* Read the saved register from the stack frame. */ | |
266 | read_memory (sp + i386obsd_uthread_reg_offset[i], buf, 4); | |
267 | regcache_raw_supply (regcache, i, buf); | |
268 | } | |
269 | } | |
a28109e0 MK |
270 | } |
271 | ||
272 | static void | |
273 | i386obsd_collect_uthread (const struct regcache *regcache, | |
274 | int regnum, CORE_ADDR addr) | |
275 | { | |
276 | CORE_ADDR sp_addr = addr + I386OBSD_UTHREAD_ESP_OFFSET; | |
277 | CORE_ADDR sp = 0; | |
63c0089f | 278 | gdb_byte buf[4]; |
a28109e0 MK |
279 | int i; |
280 | ||
281 | gdb_assert (regnum >= -1); | |
282 | ||
283 | if (regnum == -1 || regnum == I386_ESP_REGNUM) | |
284 | { | |
285 | int offset; | |
286 | ||
287 | /* Calculate the stack pointer (frame pointer) that will be | |
288 | stored into the thread structure. */ | |
289 | offset = i386obsd_uthread_reg_offset[I386_EIP_REGNUM] + 4; | |
290 | regcache_raw_collect (regcache, I386_ESP_REGNUM, buf); | |
291 | sp = extract_unsigned_integer (buf, 4) - offset; | |
292 | ||
293 | /* Store the stack pointer. */ | |
294 | write_memory_unsigned_integer (sp_addr, 4, sp); | |
295 | ||
296 | /* The stack pointer was (potentially) modified. Make sure we | |
297 | build a proper stack frame. */ | |
298 | regnum = -1; | |
299 | } | |
300 | ||
301 | for (i = 0; i < ARRAY_SIZE (i386obsd_uthread_reg_offset); i++) | |
302 | { | |
303 | if (i386obsd_uthread_reg_offset[i] != -1 | |
304 | && (regnum == -1 || regnum == i)) | |
305 | { | |
306 | /* Fetch stack pointer from thread structure (if we didn't | |
307 | calculate it already). */ | |
308 | if (sp == 0) | |
309 | sp = read_memory_unsigned_integer (sp_addr, 4); | |
310 | ||
311 | /* Write the register into the stack frame. */ | |
312 | regcache_raw_collect (regcache, i, buf); | |
313 | write_memory (sp + i386obsd_uthread_reg_offset[i], buf, 4); | |
314 | } | |
315 | } | |
316 | } | |
508fbfea MK |
317 | \f |
318 | /* Kernel debugging support. */ | |
319 | ||
320 | /* From <machine/frame.h>. Note that %esp and %ess are only saved in | |
321 | a trap frame when entering the kernel from user space. */ | |
322 | static int i386obsd_tf_reg_offset[] = | |
323 | { | |
324 | 10 * 4, /* %eax */ | |
325 | 9 * 4, /* %ecx */ | |
326 | 8 * 4, /* %edx */ | |
327 | 7 * 4, /* %ebx */ | |
328 | -1, /* %esp */ | |
329 | 6 * 4, /* %ebp */ | |
330 | 5 * 4, /* %esi */ | |
331 | 4 * 4, /* %edi */ | |
332 | 13 * 4, /* %eip */ | |
333 | 15 * 4, /* %eflags */ | |
334 | 14 * 4, /* %cs */ | |
335 | -1, /* %ss */ | |
336 | 3 * 4, /* %ds */ | |
337 | 2 * 4, /* %es */ | |
338 | 0 * 4, /* %fs */ | |
339 | 1 * 4 /* %gs */ | |
340 | }; | |
341 | ||
342 | static struct trad_frame_cache * | |
343 | i386obsd_trapframe_cache(struct frame_info *next_frame, void **this_cache) | |
344 | { | |
345 | struct trad_frame_cache *cache; | |
346 | CORE_ADDR func, sp, addr; | |
347 | ULONGEST cs; | |
348 | int i; | |
349 | ||
350 | if (*this_cache) | |
351 | return *this_cache; | |
352 | ||
353 | cache = trad_frame_cache_zalloc (next_frame); | |
354 | *this_cache = cache; | |
355 | ||
356 | func = frame_func_unwind (next_frame); | |
357 | sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM); | |
358 | for (i = 0; i < ARRAY_SIZE (i386obsd_tf_reg_offset); i++) | |
359 | if (i386obsd_tf_reg_offset[i] != -1) | |
360 | trad_frame_set_reg_addr (cache, i, sp + i386obsd_tf_reg_offset[i]); | |
361 | ||
362 | /* Read %cs from trap frame. */ | |
363 | addr = sp + i386obsd_tf_reg_offset[I386_CS_REGNUM]; | |
364 | cs = read_memory_unsigned_integer (addr, 4); | |
365 | if ((cs & I386_SEL_RPL) == I386_SEL_UPL) | |
366 | { | |
367 | /* Trap from use space; terminate backtrace. */ | |
368 | trad_frame_set_id (cache, null_frame_id); | |
369 | } | |
370 | else | |
371 | { | |
372 | /* Construct the frame ID using the function start. */ | |
373 | trad_frame_set_id (cache, frame_id_build (sp + 8, func)); | |
374 | } | |
375 | ||
376 | return cache; | |
377 | } | |
378 | ||
379 | static void | |
380 | i386obsd_trapframe_this_id (struct frame_info *next_frame, | |
381 | void **this_cache, struct frame_id *this_id) | |
382 | { | |
383 | struct trad_frame_cache *cache = | |
384 | i386obsd_trapframe_cache (next_frame, this_cache); | |
385 | ||
386 | trad_frame_get_id (cache, this_id); | |
387 | } | |
388 | ||
389 | static void | |
390 | i386obsd_trapframe_prev_register (struct frame_info *next_frame, | |
391 | void **this_cache, int regnum, | |
392 | int *optimizedp, enum lval_type *lvalp, | |
393 | CORE_ADDR *addrp, int *realnump, | |
394 | gdb_byte *valuep) | |
395 | { | |
396 | struct trad_frame_cache *cache = | |
397 | i386obsd_trapframe_cache (next_frame, this_cache); | |
398 | ||
399 | trad_frame_get_register (cache, next_frame, regnum, | |
400 | optimizedp, lvalp, addrp, realnump, valuep); | |
401 | } | |
402 | ||
403 | static const struct frame_unwind i386obsd_trapframe_unwind = { | |
404 | /* FIXME: kettenis/20051219: This really is more like an interrupt | |
405 | frame, but SIGTRAMP_FRAME would print <signal handler called>, | |
406 | which really is not what we want here. */ | |
407 | NORMAL_FRAME, | |
408 | i386obsd_trapframe_this_id, | |
409 | i386obsd_trapframe_prev_register | |
410 | }; | |
411 | ||
412 | static const struct frame_unwind * | |
413 | i386obsd_trapframe_sniffer (struct frame_info *next_frame) | |
414 | { | |
415 | ULONGEST cs; | |
416 | char *name; | |
417 | ||
418 | cs = frame_unwind_register_unsigned (next_frame, I386_CS_REGNUM); | |
419 | if ((cs & I386_SEL_RPL) == I386_SEL_UPL) | |
420 | return NULL; | |
421 | ||
422 | find_pc_partial_function (frame_pc_unwind (next_frame), &name, NULL, NULL); | |
423 | if (name && ((strcmp ("calltrap", name) == 0) | |
424 | || (strcmp ("syscall1", name) == 0))) | |
425 | return &i386obsd_trapframe_unwind; | |
426 | ||
427 | return NULL; | |
428 | } | |
429 | \f | |
a28109e0 | 430 | |
005328e3 MK |
431 | static void |
432 | i386obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
433 | { | |
434 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
435 | ||
436 | /* Obviously OpenBSD is BSD-based. */ | |
437 | i386bsd_init_abi (info, gdbarch); | |
438 | ||
67457012 MK |
439 | /* OpenBSD has a different `struct reg'. */ |
440 | tdep->gregset_reg_offset = i386obsd_r_reg_offset; | |
441 | tdep->gregset_num_regs = ARRAY_SIZE (i386obsd_r_reg_offset); | |
442 | tdep->sizeof_gregset = 16 * 4; | |
443 | ||
005328e3 MK |
444 | /* OpenBSD uses -freg-struct-return by default. */ |
445 | tdep->struct_return = reg_struct_return; | |
446 | ||
447 | /* OpenBSD uses a different memory layout. */ | |
5d93ae8c MK |
448 | tdep->sigtramp_start = i386obsd_sigtramp_start_addr; |
449 | tdep->sigtramp_end = i386obsd_sigtramp_end_addr; | |
911bc6ee | 450 | tdep->sigtramp_p = i386obsd_sigtramp_p; |
005328e3 MK |
451 | |
452 | /* OpenBSD has a `struct sigcontext' that's different from the | |
f2e7c15d | 453 | original 4.3 BSD. */ |
a3386186 | 454 | tdep->sc_reg_offset = i386obsd_sc_reg_offset; |
67457012 | 455 | tdep->sc_num_regs = ARRAY_SIZE (i386obsd_sc_reg_offset); |
a28109e0 MK |
456 | |
457 | /* OpenBSD provides a user-level threads implementation. */ | |
458 | bsd_uthread_set_supply_uthread (gdbarch, i386obsd_supply_uthread); | |
459 | bsd_uthread_set_collect_uthread (gdbarch, i386obsd_collect_uthread); | |
508fbfea MK |
460 | |
461 | /* Unwind kernel trap frames correctly. */ | |
462 | frame_unwind_append_sniffer (gdbarch, i386obsd_trapframe_sniffer); | |
005328e3 | 463 | } |
60a6eeb6 MK |
464 | |
465 | /* OpenBSD a.out. */ | |
466 | ||
467 | static void | |
468 | i386obsd_aout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
469 | { | |
470 | i386obsd_init_abi (info, gdbarch); | |
471 | ||
472 | /* OpenBSD a.out has a single register set. */ | |
473 | set_gdbarch_regset_from_core_section | |
474 | (gdbarch, i386obsd_aout_regset_from_core_section); | |
475 | } | |
476 | ||
477 | /* OpenBSD ELF. */ | |
478 | ||
479 | static void | |
480 | i386obsd_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
481 | { | |
482 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
483 | ||
484 | /* It's still OpenBSD. */ | |
485 | i386obsd_init_abi (info, gdbarch); | |
486 | ||
487 | /* But ELF-based. */ | |
488 | i386_elf_init_abi (info, gdbarch); | |
489 | ||
490 | /* OpenBSD ELF uses SVR4-style shared libraries. */ | |
60a6eeb6 MK |
491 | set_solib_svr4_fetch_link_map_offsets |
492 | (gdbarch, svr4_ilp32_fetch_link_map_offsets); | |
493 | } | |
67457012 MK |
494 | \f |
495 | ||
496 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
497 | void _initialize_i386obsd_tdep (void); | |
005328e3 MK |
498 | |
499 | void | |
500 | _initialize_i386obsd_tdep (void) | |
501 | { | |
005328e3 MK |
502 | /* FIXME: kettenis/20021020: Since OpenBSD/i386 binaries are |
503 | indistingushable from NetBSD/i386 a.out binaries, building a GDB | |
504 | that should support both these targets will probably not work as | |
505 | expected. */ | |
506 | #define GDB_OSABI_OPENBSD_AOUT GDB_OSABI_NETBSD_AOUT | |
507 | ||
05816f70 | 508 | gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_OPENBSD_AOUT, |
60a6eeb6 MK |
509 | i386obsd_aout_init_abi); |
510 | gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_OPENBSD_ELF, | |
511 | i386obsd_elf_init_abi); | |
005328e3 | 512 | } |