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8a96bc77 MK |
1 | /* Target-dependent code for FreeBSD/i386. |
2 | ||
618f726f | 3 | Copyright (C) 2003-2016 Free Software Foundation, Inc. |
8a96bc77 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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
8a96bc77 MK |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
8a96bc77 MK |
19 | |
20 | #include "defs.h" | |
21 | #include "arch-utils.h" | |
fa565c2b | 22 | #include "gdbcore.h" |
8a96bc77 | 23 | #include "osabi.h" |
fa565c2b | 24 | #include "regcache.h" |
97de3545 JB |
25 | #include "regset.h" |
26 | #include "i386fbsd-tdep.h" | |
27 | #include "x86-xstate.h" | |
fa565c2b | 28 | |
8a96bc77 MK |
29 | #include "i386-tdep.h" |
30 | #include "i387-tdep.h" | |
fa565c2b | 31 | #include "bsd-uthread.h" |
490496c3 | 32 | #include "fbsd-tdep.h" |
7e654c37 | 33 | #include "solib-svr4.h" |
8a96bc77 | 34 | |
cf424aef JB |
35 | /* Support for signal handlers. */ |
36 | ||
37 | /* Return whether THIS_FRAME corresponds to a FreeBSD sigtramp | |
38 | routine. */ | |
39 | ||
40 | /* FreeBSD/i386 supports three different signal trampolines, one for | |
41 | versions before 4.0, a second for 4.x, and a third for 5.0 and | |
42 | later. To complicate matters, FreeBSD/i386 binaries running under | |
43 | an amd64 kernel use a different set of trampolines. These | |
44 | trampolines differ from the i386 kernel trampolines in that they | |
45 | omit a middle section that conditionally restores %gs. */ | |
46 | ||
47 | static const gdb_byte i386fbsd_sigtramp_start[] = | |
48 | { | |
49 | 0x8d, 0x44, 0x24, 0x20, /* lea SIGF_UC(%esp),%eax */ | |
50 | 0x50 /* pushl %eax */ | |
51 | }; | |
52 | ||
53 | static const gdb_byte i386fbsd_sigtramp_middle[] = | |
54 | { | |
55 | 0xf7, 0x40, 0x54, 0x00, 0x00, 0x02, 0x00, | |
56 | /* testl $PSL_VM,UC_EFLAGS(%eax) */ | |
57 | 0x75, 0x03, /* jne +3 */ | |
58 | 0x8e, 0x68, 0x14 /* mov UC_GS(%eax),%gs */ | |
59 | }; | |
60 | ||
61 | static const gdb_byte i386fbsd_sigtramp_end[] = | |
62 | { | |
63 | 0xb8, 0xa1, 0x01, 0x00, 0x00, /* movl $SYS_sigreturn,%eax */ | |
64 | 0x50, /* pushl %eax */ | |
65 | 0xcd, 0x80 /* int $0x80 */ | |
66 | }; | |
67 | ||
68 | static const gdb_byte i386fbsd_freebsd4_sigtramp_start[] = | |
69 | { | |
70 | 0x8d, 0x44, 0x24, 0x14, /* lea SIGF_UC4(%esp),%eax */ | |
71 | 0x50 /* pushl %eax */ | |
72 | }; | |
73 | ||
74 | static const gdb_byte i386fbsd_freebsd4_sigtramp_middle[] = | |
75 | { | |
76 | 0xf7, 0x40, 0x54, 0x00, 0x00, 0x02, 0x00, | |
77 | /* testl $PSL_VM,UC4_EFLAGS(%eax) */ | |
78 | 0x75, 0x03, /* jne +3 */ | |
79 | 0x8e, 0x68, 0x14 /* mov UC4_GS(%eax),%gs */ | |
80 | }; | |
81 | ||
82 | static const gdb_byte i386fbsd_freebsd4_sigtramp_end[] = | |
83 | { | |
84 | 0xb8, 0x58, 0x01, 0x00, 0x00, /* movl $344,%eax */ | |
85 | 0x50, /* pushl %eax */ | |
86 | 0xcd, 0x80 /* int $0x80 */ | |
87 | }; | |
88 | ||
89 | static const gdb_byte i386fbsd_osigtramp_start[] = | |
90 | { | |
91 | 0x8d, 0x44, 0x24, 0x14, /* lea SIGF_SC(%esp),%eax */ | |
92 | 0x50 /* pushl %eax */ | |
93 | }; | |
94 | ||
95 | static const gdb_byte i386fbsd_osigtramp_middle[] = | |
96 | { | |
97 | 0xf7, 0x40, 0x18, 0x00, 0x00, 0x02, 0x00, | |
98 | /* testl $PSL_VM,SC_PS(%eax) */ | |
99 | 0x75, 0x03, /* jne +3 */ | |
100 | 0x8e, 0x68, 0x44 /* mov SC_GS(%eax),%gs */ | |
101 | }; | |
102 | ||
103 | static const gdb_byte i386fbsd_osigtramp_end[] = | |
104 | { | |
105 | 0xb8, 0x67, 0x00, 0x00, 0x00, /* movl $103,%eax */ | |
106 | 0x50, /* pushl %eax */ | |
107 | 0xcd, 0x80 /* int $0x80 */ | |
108 | }; | |
109 | ||
110 | /* The three different trampolines are all the same size. */ | |
773eacf5 JB |
111 | gdb_static_assert (sizeof i386fbsd_sigtramp_start |
112 | == sizeof i386fbsd_freebsd4_sigtramp_start); | |
113 | gdb_static_assert (sizeof i386fbsd_sigtramp_start | |
114 | == sizeof i386fbsd_osigtramp_start); | |
115 | gdb_static_assert (sizeof i386fbsd_sigtramp_middle | |
116 | == sizeof i386fbsd_freebsd4_sigtramp_middle); | |
117 | gdb_static_assert (sizeof i386fbsd_sigtramp_middle | |
118 | == sizeof i386fbsd_osigtramp_middle); | |
119 | gdb_static_assert (sizeof i386fbsd_sigtramp_end | |
120 | == sizeof i386fbsd_freebsd4_sigtramp_end); | |
121 | gdb_static_assert (sizeof i386fbsd_sigtramp_end | |
122 | == sizeof i386fbsd_osigtramp_end); | |
cf424aef JB |
123 | |
124 | /* We assume that the middle is the largest chunk below. */ | |
773eacf5 JB |
125 | gdb_static_assert (sizeof i386fbsd_sigtramp_middle |
126 | > sizeof i386fbsd_sigtramp_start); | |
127 | gdb_static_assert (sizeof i386fbsd_sigtramp_middle | |
128 | > sizeof i386fbsd_sigtramp_end); | |
cf424aef JB |
129 | |
130 | static int | |
131 | i386fbsd_sigtramp_p (struct frame_info *this_frame) | |
132 | { | |
133 | CORE_ADDR pc = get_frame_pc (this_frame); | |
134 | gdb_byte buf[sizeof i386fbsd_sigtramp_middle]; | |
135 | const gdb_byte *middle, *end; | |
136 | ||
137 | /* Look for a matching start. */ | |
138 | if (!safe_frame_unwind_memory (this_frame, pc, buf, | |
139 | sizeof i386fbsd_sigtramp_start)) | |
140 | return 0; | |
773eacf5 JB |
141 | if (memcmp (buf, i386fbsd_sigtramp_start, sizeof i386fbsd_sigtramp_start) |
142 | == 0) | |
143 | { | |
144 | middle = i386fbsd_sigtramp_middle; | |
145 | end = i386fbsd_sigtramp_end; | |
146 | } | |
147 | else if (memcmp (buf, i386fbsd_freebsd4_sigtramp_start, | |
148 | sizeof i386fbsd_freebsd4_sigtramp_start) == 0) | |
149 | { | |
150 | middle = i386fbsd_freebsd4_sigtramp_middle; | |
151 | end = i386fbsd_freebsd4_sigtramp_end; | |
152 | } | |
153 | else if (memcmp (buf, i386fbsd_osigtramp_start, | |
154 | sizeof i386fbsd_osigtramp_start) == 0) | |
155 | { | |
156 | middle = i386fbsd_osigtramp_middle; | |
157 | end = i386fbsd_osigtramp_end; | |
158 | } | |
159 | else | |
cf424aef JB |
160 | return 0; |
161 | ||
162 | /* Since the end is shorter than the middle, check for a matching end | |
163 | next. */ | |
164 | pc += sizeof i386fbsd_sigtramp_start; | |
165 | if (!safe_frame_unwind_memory (this_frame, pc, buf, | |
166 | sizeof i386fbsd_sigtramp_end)) | |
167 | return 0; | |
168 | if (memcmp (buf, end, sizeof i386fbsd_sigtramp_end) == 0) | |
169 | return 1; | |
170 | ||
171 | /* If the end didn't match, check for a matching middle. */ | |
172 | if (!safe_frame_unwind_memory (this_frame, pc, buf, | |
173 | sizeof i386fbsd_sigtramp_middle)) | |
174 | return 0; | |
175 | if (memcmp (buf, middle, sizeof i386fbsd_sigtramp_middle) != 0) | |
176 | return 0; | |
177 | ||
178 | /* The middle matched, check for a matching end. */ | |
179 | pc += sizeof i386fbsd_sigtramp_middle; | |
180 | if (!safe_frame_unwind_memory (this_frame, pc, buf, | |
181 | sizeof i386fbsd_sigtramp_end)) | |
182 | return 0; | |
183 | if (memcmp (buf, end, sizeof i386fbsd_sigtramp_end) != 0) | |
184 | return 0; | |
185 | ||
186 | return 1; | |
187 | } | |
188 | ||
8a96bc77 MK |
189 | /* FreeBSD 3.0-RELEASE or later. */ |
190 | ||
191 | /* From <machine/reg.h>. */ | |
192 | static int i386fbsd_r_reg_offset[] = | |
193 | { | |
194 | 9 * 4, 8 * 4, 7 * 4, 6 * 4, /* %eax, %ecx, %edx, %ebx */ | |
195 | 15 * 4, 4 * 4, /* %esp, %ebp */ | |
196 | 3 * 4, 2 * 4, /* %esi, %edi */ | |
197 | 12 * 4, 14 * 4, /* %eip, %eflags */ | |
198 | 13 * 4, 16 * 4, /* %cs, %ss */ | |
199 | 1 * 4, 0 * 4, -1, -1 /* %ds, %es, %fs, %gs */ | |
200 | }; | |
201 | ||
5d93ae8c | 202 | /* Sigtramp routine location. */ |
cf424aef JB |
203 | CORE_ADDR i386fbsd_sigtramp_start_addr; |
204 | CORE_ADDR i386fbsd_sigtramp_end_addr; | |
8a96bc77 MK |
205 | |
206 | /* From <machine/signal.h>. */ | |
abfcdd21 | 207 | int i386fbsd_sc_reg_offset[] = |
8a96bc77 MK |
208 | { |
209 | 8 + 14 * 4, /* %eax */ | |
210 | 8 + 13 * 4, /* %ecx */ | |
211 | 8 + 12 * 4, /* %edx */ | |
212 | 8 + 11 * 4, /* %ebx */ | |
213 | 8 + 0 * 4, /* %esp */ | |
214 | 8 + 1 * 4, /* %ebp */ | |
215 | 8 + 10 * 4, /* %esi */ | |
216 | 8 + 9 * 4, /* %edi */ | |
217 | 8 + 3 * 4, /* %eip */ | |
218 | 8 + 4 * 4, /* %eflags */ | |
219 | 8 + 7 * 4, /* %cs */ | |
220 | 8 + 8 * 4, /* %ss */ | |
221 | 8 + 6 * 4, /* %ds */ | |
222 | 8 + 5 * 4, /* %es */ | |
223 | 8 + 15 * 4, /* %fs */ | |
224 | 8 + 16 * 4 /* %gs */ | |
225 | }; | |
226 | ||
1c02b2a5 | 227 | /* From /usr/src/lib/libc/i386/gen/_setjmp.S. */ |
fa565c2b MK |
228 | static int i386fbsd_jmp_buf_reg_offset[] = |
229 | { | |
230 | -1, /* %eax */ | |
231 | -1, /* %ecx */ | |
232 | -1, /* %edx */ | |
233 | 1 * 4, /* %ebx */ | |
234 | 2 * 4, /* %esp */ | |
235 | 3 * 4, /* %ebp */ | |
236 | 4 * 4, /* %esi */ | |
237 | 5 * 4, /* %edi */ | |
238 | 0 * 4 /* %eip */ | |
239 | }; | |
240 | ||
97de3545 JB |
241 | /* Get XSAVE extended state xcr0 from core dump. */ |
242 | ||
243 | uint64_t | |
244 | i386fbsd_core_read_xcr0 (bfd *abfd) | |
245 | { | |
246 | asection *xstate = bfd_get_section_by_name (abfd, ".reg-xstate"); | |
247 | uint64_t xcr0; | |
248 | ||
249 | if (xstate) | |
250 | { | |
251 | size_t size = bfd_section_size (abfd, xstate); | |
252 | ||
253 | /* Check extended state size. */ | |
254 | if (size < X86_XSTATE_AVX_SIZE) | |
255 | xcr0 = X86_XSTATE_SSE_MASK; | |
256 | else | |
257 | { | |
258 | char contents[8]; | |
259 | ||
260 | if (! bfd_get_section_contents (abfd, xstate, contents, | |
261 | I386_FBSD_XSAVE_XCR0_OFFSET, | |
262 | 8)) | |
263 | { | |
264 | warning (_("Couldn't read `xcr0' bytes from " | |
265 | "`.reg-xstate' section in core file.")); | |
266 | return 0; | |
267 | } | |
268 | ||
269 | xcr0 = bfd_get_64 (abfd, contents); | |
270 | } | |
271 | } | |
272 | else | |
273 | xcr0 = 0; | |
274 | ||
275 | return xcr0; | |
276 | } | |
277 | ||
278 | /* Implement the core_read_description gdbarch method. */ | |
279 | ||
280 | static const struct target_desc * | |
281 | i386fbsd_core_read_description (struct gdbarch *gdbarch, | |
282 | struct target_ops *target, | |
283 | bfd *abfd) | |
284 | { | |
285 | return i386_target_description (i386fbsd_core_read_xcr0 (abfd)); | |
286 | } | |
287 | ||
288 | /* Similar to i386_supply_fpregset, but use XSAVE extended state. */ | |
289 | ||
290 | static void | |
291 | i386fbsd_supply_xstateregset (const struct regset *regset, | |
292 | struct regcache *regcache, int regnum, | |
293 | const void *xstateregs, size_t len) | |
294 | { | |
295 | i387_supply_xsave (regcache, regnum, xstateregs); | |
296 | } | |
297 | ||
298 | /* Similar to i386_collect_fpregset, but use XSAVE extended state. */ | |
299 | ||
300 | static void | |
301 | i386fbsd_collect_xstateregset (const struct regset *regset, | |
302 | const struct regcache *regcache, | |
303 | int regnum, void *xstateregs, size_t len) | |
304 | { | |
305 | i387_collect_xsave (regcache, regnum, xstateregs, 1); | |
306 | } | |
307 | ||
308 | /* Register set definitions. */ | |
309 | ||
310 | static const struct regset i386fbsd_xstateregset = | |
311 | { | |
312 | NULL, | |
313 | i386fbsd_supply_xstateregset, | |
314 | i386fbsd_collect_xstateregset | |
315 | }; | |
316 | ||
317 | /* Iterate over core file register note sections. */ | |
318 | ||
319 | static void | |
320 | i386fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch, | |
321 | iterate_over_regset_sections_cb *cb, | |
322 | void *cb_data, | |
323 | const struct regcache *regcache) | |
324 | { | |
325 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
326 | ||
327 | cb (".reg", tdep->sizeof_gregset, &i386_gregset, NULL, cb_data); | |
328 | cb (".reg2", tdep->sizeof_fpregset, &i386_fpregset, NULL, cb_data); | |
329 | ||
330 | if (tdep->xcr0 & X86_XSTATE_AVX) | |
331 | cb (".reg-xstate", X86_XSTATE_SIZE(tdep->xcr0), | |
332 | &i386fbsd_xstateregset, "XSAVE extended state", cb_data); | |
333 | } | |
334 | ||
fa565c2b MK |
335 | static void |
336 | i386fbsd_supply_uthread (struct regcache *regcache, | |
337 | int regnum, CORE_ADDR addr) | |
338 | { | |
e362b510 | 339 | gdb_byte buf[4]; |
fa565c2b MK |
340 | int i; |
341 | ||
342 | gdb_assert (regnum >= -1); | |
343 | ||
344 | for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++) | |
345 | { | |
346 | if (i386fbsd_jmp_buf_reg_offset[i] != -1 | |
347 | && (regnum == -1 || regnum == i)) | |
348 | { | |
349 | read_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4); | |
350 | regcache_raw_supply (regcache, i, buf); | |
351 | } | |
352 | } | |
353 | } | |
354 | ||
355 | static void | |
356 | i386fbsd_collect_uthread (const struct regcache *regcache, | |
357 | int regnum, CORE_ADDR addr) | |
358 | { | |
e362b510 | 359 | gdb_byte buf[4]; |
fa565c2b MK |
360 | int i; |
361 | ||
362 | gdb_assert (regnum >= -1); | |
363 | ||
364 | for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++) | |
365 | { | |
366 | if (i386fbsd_jmp_buf_reg_offset[i] != -1 | |
367 | && (regnum == -1 || regnum == i)) | |
368 | { | |
369 | regcache_raw_collect (regcache, i, buf); | |
370 | write_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4); | |
371 | } | |
372 | } | |
373 | } | |
374 | ||
8a96bc77 MK |
375 | static void |
376 | i386fbsdaout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
377 | { | |
378 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
379 | ||
380 | /* Obviously FreeBSD is BSD-based. */ | |
381 | i386bsd_init_abi (info, gdbarch); | |
382 | ||
383 | /* FreeBSD has a different `struct reg', and reserves some space for | |
384 | its FPU emulator in `struct fpreg'. */ | |
385 | tdep->gregset_reg_offset = i386fbsd_r_reg_offset; | |
386 | tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd_r_reg_offset); | |
387 | tdep->sizeof_gregset = 18 * 4; | |
388 | tdep->sizeof_fpregset = 176; | |
389 | ||
390 | /* FreeBSD uses -freg-struct-return by default. */ | |
391 | tdep->struct_return = reg_struct_return; | |
392 | ||
cf424aef JB |
393 | tdep->sigtramp_p = i386fbsd_sigtramp_p; |
394 | ||
8a96bc77 | 395 | /* FreeBSD uses a different memory layout. */ |
5d93ae8c MK |
396 | tdep->sigtramp_start = i386fbsd_sigtramp_start_addr; |
397 | tdep->sigtramp_end = i386fbsd_sigtramp_end_addr; | |
8a96bc77 MK |
398 | |
399 | /* FreeBSD has a more complete `struct sigcontext'. */ | |
400 | tdep->sc_reg_offset = i386fbsd_sc_reg_offset; | |
401 | tdep->sc_num_regs = ARRAY_SIZE (i386fbsd_sc_reg_offset); | |
fa565c2b MK |
402 | |
403 | /* FreeBSD provides a user-level threads implementation. */ | |
404 | bsd_uthread_set_supply_uthread (gdbarch, i386fbsd_supply_uthread); | |
405 | bsd_uthread_set_collect_uthread (gdbarch, i386fbsd_collect_uthread); | |
8a96bc77 MK |
406 | } |
407 | ||
408 | static void | |
409 | i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
410 | { | |
411 | /* It's almost identical to FreeBSD a.out. */ | |
412 | i386fbsdaout_init_abi (info, gdbarch); | |
413 | ||
414 | /* Except that it uses ELF. */ | |
415 | i386_elf_init_abi (info, gdbarch); | |
416 | ||
417 | /* FreeBSD ELF uses SVR4-style shared libraries. */ | |
7e654c37 MK |
418 | set_solib_svr4_fetch_link_map_offsets |
419 | (gdbarch, svr4_ilp32_fetch_link_map_offsets); | |
8a96bc77 MK |
420 | } |
421 | ||
422 | /* FreeBSD 4.0-RELEASE or later. */ | |
423 | ||
424 | /* From <machine/reg.h>. */ | |
425 | static int i386fbsd4_r_reg_offset[] = | |
426 | { | |
427 | 10 * 4, 9 * 4, 8 * 4, 7 * 4, /* %eax, %ecx, %edx, %ebx */ | |
428 | 16 * 4, 5 * 4, /* %esp, %ebp */ | |
429 | 4 * 4, 3 * 4, /* %esi, %edi */ | |
430 | 13 * 4, 15 * 4, /* %eip, %eflags */ | |
431 | 14 * 4, 17 * 4, /* %cs, %ss */ | |
432 | 2 * 4, 1 * 4, 0 * 4, 18 * 4 /* %ds, %es, %fs, %gs */ | |
433 | }; | |
434 | ||
435 | /* From <machine/signal.h>. */ | |
436 | int i386fbsd4_sc_reg_offset[] = | |
437 | { | |
438 | 20 + 11 * 4, /* %eax */ | |
439 | 20 + 10 * 4, /* %ecx */ | |
440 | 20 + 9 * 4, /* %edx */ | |
441 | 20 + 8 * 4, /* %ebx */ | |
442 | 20 + 17 * 4, /* %esp */ | |
443 | 20 + 6 * 4, /* %ebp */ | |
444 | 20 + 5 * 4, /* %esi */ | |
445 | 20 + 4 * 4, /* %edi */ | |
446 | 20 + 14 * 4, /* %eip */ | |
447 | 20 + 16 * 4, /* %eflags */ | |
448 | 20 + 15 * 4, /* %cs */ | |
449 | 20 + 18 * 4, /* %ss */ | |
450 | 20 + 3 * 4, /* %ds */ | |
451 | 20 + 2 * 4, /* %es */ | |
452 | 20 + 1 * 4, /* %fs */ | |
453 | 20 + 0 * 4 /* %gs */ | |
454 | }; | |
455 | ||
456 | static void | |
457 | i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
458 | { | |
459 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
460 | ||
490496c3 AA |
461 | /* Generic FreeBSD support. */ |
462 | fbsd_init_abi (info, gdbarch); | |
463 | ||
8a96bc77 MK |
464 | /* Inherit stuff from older releases. We assume that FreeBSD |
465 | 4.0-RELEASE always uses ELF. */ | |
466 | i386fbsd_init_abi (info, gdbarch); | |
467 | ||
468 | /* FreeBSD 4.0 introduced a new `struct reg'. */ | |
469 | tdep->gregset_reg_offset = i386fbsd4_r_reg_offset; | |
470 | tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd4_r_reg_offset); | |
471 | tdep->sizeof_gregset = 19 * 4; | |
472 | ||
473 | /* FreeBSD 4.0 introduced a new `struct sigcontext'. */ | |
474 | tdep->sc_reg_offset = i386fbsd4_sc_reg_offset; | |
475 | tdep->sc_num_regs = ARRAY_SIZE (i386fbsd4_sc_reg_offset); | |
97de3545 JB |
476 | |
477 | tdep->xsave_xcr0_offset = I386_FBSD_XSAVE_XCR0_OFFSET; | |
478 | ||
479 | /* Iterate over core file register note sections. */ | |
480 | set_gdbarch_iterate_over_regset_sections | |
481 | (gdbarch, i386fbsd_iterate_over_regset_sections); | |
482 | ||
483 | set_gdbarch_core_read_description (gdbarch, | |
484 | i386fbsd_core_read_description); | |
8a96bc77 MK |
485 | } |
486 | ||
487 | \f | |
488 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
489 | void _initialize_i386fbsd_tdep (void); | |
490 | ||
491 | void | |
492 | _initialize_i386fbsd_tdep (void) | |
493 | { | |
494 | gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_AOUT, | |
495 | i386fbsdaout_init_abi); | |
496 | gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_ELF, | |
497 | i386fbsd4_init_abi); | |
498 | } |