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ca557f44 AC |
1 | /* Target-dependent code for GNU/Linux running on i386's, for GDB. |
2 | ||
3 | Copyright 2000, 2001, 2002 Free Software Foundation, Inc. | |
e7ee86a9 JB |
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 | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "gdbcore.h" | |
24 | #include "frame.h" | |
25 | #include "value.h" | |
4e052eda | 26 | #include "regcache.h" |
6441c4a0 | 27 | #include "inferior.h" |
e7ee86a9 | 28 | |
bafda96e MS |
29 | /* For i386_linux_skip_solib_resolver. */ |
30 | #include "symtab.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
305d65ca MK |
33 | |
34 | #include "solib-svr4.h" /* For struct link_map_offsets. */ | |
bafda96e | 35 | |
6441c4a0 MK |
36 | /* Return the name of register REG. */ |
37 | ||
38 | char * | |
39 | i386_linux_register_name (int reg) | |
40 | { | |
41 | /* Deal with the extra "orig_eax" pseudo register. */ | |
42 | if (reg == I386_LINUX_ORIG_EAX_REGNUM) | |
43 | return "orig_eax"; | |
44 | ||
45 | return i386_register_name (reg); | |
46 | } | |
47 | ||
48 | int | |
49 | i386_linux_register_byte (int reg) | |
50 | { | |
51 | /* Deal with the extra "orig_eax" pseudo register. */ | |
52 | if (reg == I386_LINUX_ORIG_EAX_REGNUM) | |
53 | return (i386_register_byte (I386_LINUX_ORIG_EAX_REGNUM - 1) | |
54 | + i386_register_raw_size (I386_LINUX_ORIG_EAX_REGNUM - 1)); | |
55 | ||
56 | return i386_register_byte (reg); | |
57 | } | |
58 | ||
59 | int | |
60 | i386_linux_register_raw_size (int reg) | |
61 | { | |
62 | /* Deal with the extra "orig_eax" pseudo register. */ | |
63 | if (reg == I386_LINUX_ORIG_EAX_REGNUM) | |
64 | return 4; | |
65 | ||
66 | return i386_register_raw_size (reg); | |
67 | } | |
e7ee86a9 JB |
68 | \f |
69 | /* Recognizing signal handler frames. */ | |
70 | ||
ca557f44 | 71 | /* GNU/Linux has two flavors of signals. Normal signal handlers, and |
e7ee86a9 JB |
72 | "realtime" (RT) signals. The RT signals can provide additional |
73 | information to the signal handler if the SA_SIGINFO flag is set | |
74 | when establishing a signal handler using `sigaction'. It is not | |
ca557f44 AC |
75 | unlikely that future versions of GNU/Linux will support SA_SIGINFO |
76 | for normal signals too. */ | |
e7ee86a9 JB |
77 | |
78 | /* When the i386 Linux kernel calls a signal handler and the | |
79 | SA_RESTORER flag isn't set, the return address points to a bit of | |
80 | code on the stack. This function returns whether the PC appears to | |
81 | be within this bit of code. | |
82 | ||
83 | The instruction sequence for normal signals is | |
84 | pop %eax | |
85 | mov $0x77,%eax | |
86 | int $0x80 | |
87 | or 0x58 0xb8 0x77 0x00 0x00 0x00 0xcd 0x80. | |
88 | ||
89 | Checking for the code sequence should be somewhat reliable, because | |
90 | the effect is to call the system call sigreturn. This is unlikely | |
91 | to occur anywhere other than a signal trampoline. | |
92 | ||
93 | It kind of sucks that we have to read memory from the process in | |
94 | order to identify a signal trampoline, but there doesn't seem to be | |
95 | any other way. The IN_SIGTRAMP macro in tm-linux.h arranges to | |
96 | only call us if no function name could be identified, which should | |
97 | be the case since the code is on the stack. | |
98 | ||
99 | Detection of signal trampolines for handlers that set the | |
100 | SA_RESTORER flag is in general not possible. Unfortunately this is | |
101 | what the GNU C Library has been doing for quite some time now. | |
102 | However, as of version 2.1.2, the GNU C Library uses signal | |
103 | trampolines (named __restore and __restore_rt) that are identical | |
104 | to the ones used by the kernel. Therefore, these trampolines are | |
105 | supported too. */ | |
106 | ||
107 | #define LINUX_SIGTRAMP_INSN0 (0x58) /* pop %eax */ | |
108 | #define LINUX_SIGTRAMP_OFFSET0 (0) | |
109 | #define LINUX_SIGTRAMP_INSN1 (0xb8) /* mov $NNNN,%eax */ | |
110 | #define LINUX_SIGTRAMP_OFFSET1 (1) | |
111 | #define LINUX_SIGTRAMP_INSN2 (0xcd) /* int */ | |
112 | #define LINUX_SIGTRAMP_OFFSET2 (6) | |
113 | ||
114 | static const unsigned char linux_sigtramp_code[] = | |
115 | { | |
116 | LINUX_SIGTRAMP_INSN0, /* pop %eax */ | |
117 | LINUX_SIGTRAMP_INSN1, 0x77, 0x00, 0x00, 0x00, /* mov $0x77,%eax */ | |
118 | LINUX_SIGTRAMP_INSN2, 0x80 /* int $0x80 */ | |
119 | }; | |
120 | ||
121 | #define LINUX_SIGTRAMP_LEN (sizeof linux_sigtramp_code) | |
122 | ||
123 | /* If PC is in a sigtramp routine, return the address of the start of | |
124 | the routine. Otherwise, return 0. */ | |
125 | ||
126 | static CORE_ADDR | |
127 | i386_linux_sigtramp_start (CORE_ADDR pc) | |
128 | { | |
129 | unsigned char buf[LINUX_SIGTRAMP_LEN]; | |
130 | ||
131 | /* We only recognize a signal trampoline if PC is at the start of | |
132 | one of the three instructions. We optimize for finding the PC at | |
133 | the start, as will be the case when the trampoline is not the | |
134 | first frame on the stack. We assume that in the case where the | |
135 | PC is not at the start of the instruction sequence, there will be | |
136 | a few trailing readable bytes on the stack. */ | |
137 | ||
138 | if (read_memory_nobpt (pc, (char *) buf, LINUX_SIGTRAMP_LEN) != 0) | |
139 | return 0; | |
140 | ||
141 | if (buf[0] != LINUX_SIGTRAMP_INSN0) | |
142 | { | |
143 | int adjust; | |
144 | ||
145 | switch (buf[0]) | |
146 | { | |
147 | case LINUX_SIGTRAMP_INSN1: | |
148 | adjust = LINUX_SIGTRAMP_OFFSET1; | |
149 | break; | |
150 | case LINUX_SIGTRAMP_INSN2: | |
151 | adjust = LINUX_SIGTRAMP_OFFSET2; | |
152 | break; | |
153 | default: | |
154 | return 0; | |
155 | } | |
156 | ||
157 | pc -= adjust; | |
158 | ||
159 | if (read_memory_nobpt (pc, (char *) buf, LINUX_SIGTRAMP_LEN) != 0) | |
160 | return 0; | |
161 | } | |
162 | ||
163 | if (memcmp (buf, linux_sigtramp_code, LINUX_SIGTRAMP_LEN) != 0) | |
164 | return 0; | |
165 | ||
166 | return pc; | |
167 | } | |
168 | ||
169 | /* This function does the same for RT signals. Here the instruction | |
170 | sequence is | |
171 | mov $0xad,%eax | |
172 | int $0x80 | |
173 | or 0xb8 0xad 0x00 0x00 0x00 0xcd 0x80. | |
174 | ||
175 | The effect is to call the system call rt_sigreturn. */ | |
176 | ||
177 | #define LINUX_RT_SIGTRAMP_INSN0 (0xb8) /* mov $NNNN,%eax */ | |
178 | #define LINUX_RT_SIGTRAMP_OFFSET0 (0) | |
179 | #define LINUX_RT_SIGTRAMP_INSN1 (0xcd) /* int */ | |
180 | #define LINUX_RT_SIGTRAMP_OFFSET1 (5) | |
181 | ||
182 | static const unsigned char linux_rt_sigtramp_code[] = | |
183 | { | |
184 | LINUX_RT_SIGTRAMP_INSN0, 0xad, 0x00, 0x00, 0x00, /* mov $0xad,%eax */ | |
185 | LINUX_RT_SIGTRAMP_INSN1, 0x80 /* int $0x80 */ | |
186 | }; | |
187 | ||
188 | #define LINUX_RT_SIGTRAMP_LEN (sizeof linux_rt_sigtramp_code) | |
189 | ||
190 | /* If PC is in a RT sigtramp routine, return the address of the start | |
191 | of the routine. Otherwise, return 0. */ | |
192 | ||
193 | static CORE_ADDR | |
194 | i386_linux_rt_sigtramp_start (CORE_ADDR pc) | |
195 | { | |
196 | unsigned char buf[LINUX_RT_SIGTRAMP_LEN]; | |
197 | ||
198 | /* We only recognize a signal trampoline if PC is at the start of | |
199 | one of the two instructions. We optimize for finding the PC at | |
200 | the start, as will be the case when the trampoline is not the | |
201 | first frame on the stack. We assume that in the case where the | |
202 | PC is not at the start of the instruction sequence, there will be | |
203 | a few trailing readable bytes on the stack. */ | |
204 | ||
205 | if (read_memory_nobpt (pc, (char *) buf, LINUX_RT_SIGTRAMP_LEN) != 0) | |
206 | return 0; | |
207 | ||
208 | if (buf[0] != LINUX_RT_SIGTRAMP_INSN0) | |
209 | { | |
210 | if (buf[0] != LINUX_RT_SIGTRAMP_INSN1) | |
211 | return 0; | |
212 | ||
213 | pc -= LINUX_RT_SIGTRAMP_OFFSET1; | |
214 | ||
215 | if (read_memory_nobpt (pc, (char *) buf, LINUX_RT_SIGTRAMP_LEN) != 0) | |
216 | return 0; | |
217 | } | |
218 | ||
219 | if (memcmp (buf, linux_rt_sigtramp_code, LINUX_RT_SIGTRAMP_LEN) != 0) | |
220 | return 0; | |
221 | ||
222 | return pc; | |
223 | } | |
224 | ||
ca557f44 | 225 | /* Return whether PC is in a GNU/Linux sigtramp routine. */ |
e7ee86a9 JB |
226 | |
227 | int | |
228 | i386_linux_in_sigtramp (CORE_ADDR pc, char *name) | |
229 | { | |
230 | if (name) | |
231 | return STREQ ("__restore", name) || STREQ ("__restore_rt", name); | |
232 | ||
233 | return (i386_linux_sigtramp_start (pc) != 0 | |
234 | || i386_linux_rt_sigtramp_start (pc) != 0); | |
235 | } | |
236 | ||
ca557f44 AC |
237 | /* Assuming FRAME is for a GNU/Linux sigtramp routine, return the |
238 | address of the associated sigcontext structure. */ | |
e7ee86a9 JB |
239 | |
240 | CORE_ADDR | |
241 | i386_linux_sigcontext_addr (struct frame_info *frame) | |
242 | { | |
243 | CORE_ADDR pc; | |
244 | ||
245 | pc = i386_linux_sigtramp_start (frame->pc); | |
246 | if (pc) | |
247 | { | |
248 | CORE_ADDR sp; | |
249 | ||
250 | if (frame->next) | |
251 | /* If this isn't the top frame, the next frame must be for the | |
252 | signal handler itself. The sigcontext structure lives on | |
253 | the stack, right after the signum argument. */ | |
254 | return frame->next->frame + 12; | |
255 | ||
256 | /* This is the top frame. We'll have to find the address of the | |
257 | sigcontext structure by looking at the stack pointer. Keep | |
258 | in mind that the first instruction of the sigtramp code is | |
259 | "pop %eax". If the PC is at this instruction, adjust the | |
260 | returned value accordingly. */ | |
261 | sp = read_register (SP_REGNUM); | |
262 | if (pc == frame->pc) | |
263 | return sp + 4; | |
264 | return sp; | |
265 | } | |
266 | ||
267 | pc = i386_linux_rt_sigtramp_start (frame->pc); | |
268 | if (pc) | |
269 | { | |
270 | if (frame->next) | |
271 | /* If this isn't the top frame, the next frame must be for the | |
272 | signal handler itself. The sigcontext structure is part of | |
273 | the user context. A pointer to the user context is passed | |
274 | as the third argument to the signal handler. */ | |
275 | return read_memory_integer (frame->next->frame + 16, 4) + 20; | |
276 | ||
277 | /* This is the top frame. Again, use the stack pointer to find | |
278 | the address of the sigcontext structure. */ | |
279 | return read_memory_integer (read_register (SP_REGNUM) + 8, 4) + 20; | |
280 | } | |
281 | ||
282 | error ("Couldn't recognize signal trampoline."); | |
283 | return 0; | |
284 | } | |
285 | ||
286 | /* Offset to saved PC in sigcontext, from <asm/sigcontext.h>. */ | |
287 | #define LINUX_SIGCONTEXT_PC_OFFSET (56) | |
288 | ||
ca557f44 AC |
289 | /* Assuming FRAME is for a GNU/Linux sigtramp routine, return the |
290 | saved program counter. */ | |
e7ee86a9 | 291 | |
50e27f84 | 292 | static CORE_ADDR |
e7ee86a9 JB |
293 | i386_linux_sigtramp_saved_pc (struct frame_info *frame) |
294 | { | |
295 | CORE_ADDR addr; | |
296 | addr = i386_linux_sigcontext_addr (frame); | |
297 | return read_memory_integer (addr + LINUX_SIGCONTEXT_PC_OFFSET, 4); | |
298 | } | |
299 | ||
300 | /* Offset to saved SP in sigcontext, from <asm/sigcontext.h>. */ | |
301 | #define LINUX_SIGCONTEXT_SP_OFFSET (28) | |
302 | ||
ca557f44 AC |
303 | /* Assuming FRAME is for a GNU/Linux sigtramp routine, return the |
304 | saved stack pointer. */ | |
e7ee86a9 | 305 | |
50e27f84 | 306 | static CORE_ADDR |
e7ee86a9 JB |
307 | i386_linux_sigtramp_saved_sp (struct frame_info *frame) |
308 | { | |
309 | CORE_ADDR addr; | |
310 | addr = i386_linux_sigcontext_addr (frame); | |
311 | return read_memory_integer (addr + LINUX_SIGCONTEXT_SP_OFFSET, 4); | |
312 | } | |
313 | ||
b05f2432 MK |
314 | /* Signal trampolines don't have a meaningful frame. As in |
315 | "i386/tm-i386.h", the frame pointer value we use is actually the | |
316 | frame pointer of the calling frame -- that is, the frame which was | |
317 | in progress when the signal trampoline was entered. GDB mostly | |
318 | treats this frame pointer value as a magic cookie. We detect the | |
319 | case of a signal trampoline by looking at the SIGNAL_HANDLER_CALLER | |
320 | field, which is set based on IN_SIGTRAMP. | |
321 | ||
322 | When a signal trampoline is invoked from a frameless function, we | |
323 | essentially have two frameless functions in a row. In this case, | |
324 | we use the same magic cookie for three frames in a row. We detect | |
325 | this case by seeing whether the next frame has | |
326 | SIGNAL_HANDLER_CALLER set, and, if it does, checking whether the | |
327 | current frame is actually frameless. In this case, we need to get | |
328 | the PC by looking at the SP register value stored in the signal | |
329 | context. | |
330 | ||
331 | This should work in most cases except in horrible situations where | |
332 | a signal occurs just as we enter a function but before the frame | |
333 | has been set up. */ | |
334 | ||
335 | #define FRAMELESS_SIGNAL(frame) \ | |
336 | ((frame)->next != NULL \ | |
337 | && (frame)->next->signal_handler_caller \ | |
338 | && frameless_look_for_prologue (frame)) | |
339 | ||
340 | CORE_ADDR | |
341 | i386_linux_frame_chain (struct frame_info *frame) | |
342 | { | |
343 | if (frame->signal_handler_caller || FRAMELESS_SIGNAL (frame)) | |
344 | return frame->frame; | |
345 | ||
346 | if (! inside_entry_file (frame->pc)) | |
347 | return read_memory_unsigned_integer (frame->frame, 4); | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
50e27f84 MK |
352 | /* Return the saved program counter for FRAME. */ |
353 | ||
354 | CORE_ADDR | |
355 | i386_linux_frame_saved_pc (struct frame_info *frame) | |
356 | { | |
357 | if (frame->signal_handler_caller) | |
358 | return i386_linux_sigtramp_saved_pc (frame); | |
359 | ||
50e27f84 MK |
360 | if (FRAMELESS_SIGNAL (frame)) |
361 | { | |
362 | CORE_ADDR sp = i386_linux_sigtramp_saved_sp (frame->next); | |
363 | return read_memory_unsigned_integer (sp, 4); | |
364 | } | |
365 | ||
366 | return read_memory_unsigned_integer (frame->frame + 4, 4); | |
367 | } | |
368 | ||
e7ee86a9 JB |
369 | /* Immediately after a function call, return the saved pc. */ |
370 | ||
371 | CORE_ADDR | |
372 | i386_linux_saved_pc_after_call (struct frame_info *frame) | |
373 | { | |
374 | if (frame->signal_handler_caller) | |
375 | return i386_linux_sigtramp_saved_pc (frame); | |
376 | ||
e5434c3d | 377 | return read_memory_unsigned_integer (read_register (SP_REGNUM), 4); |
e7ee86a9 | 378 | } |
bafda96e | 379 | |
6441c4a0 MK |
380 | /* Set the program counter for process PTID to PC. */ |
381 | ||
382 | void | |
383 | i386_linux_write_pc (CORE_ADDR pc, ptid_t ptid) | |
384 | { | |
385 | write_register_pid (PC_REGNUM, pc, ptid); | |
386 | ||
387 | /* We must be careful with modifying the program counter. If we | |
388 | just interrupted a system call, the kernel might try to restart | |
389 | it when we resume the inferior. On restarting the system call, | |
390 | the kernel will try backing up the program counter even though it | |
391 | no longer points at the system call. This typically results in a | |
392 | SIGSEGV or SIGILL. We can prevent this by writing `-1' in the | |
393 | "orig_eax" pseudo-register. | |
394 | ||
395 | Note that "orig_eax" is saved when setting up a dummy call frame. | |
396 | This means that it is properly restored when that frame is | |
397 | popped, and that the interrupted system call will be restarted | |
398 | when we resume the inferior on return from a function call from | |
399 | within GDB. In all other cases the system call will not be | |
400 | restarted. */ | |
401 | write_register_pid (I386_LINUX_ORIG_EAX_REGNUM, -1, ptid); | |
402 | } | |
403 | \f | |
bafda96e | 404 | /* Calling functions in shared libraries. */ |
6441c4a0 | 405 | |
bafda96e MS |
406 | /* Find the minimal symbol named NAME, and return both the minsym |
407 | struct and its objfile. This probably ought to be in minsym.c, but | |
408 | everything there is trying to deal with things like C++ and | |
409 | SOFUN_ADDRESS_MAYBE_TURQUOISE, ... Since this is so simple, it may | |
410 | be considered too special-purpose for general consumption. */ | |
411 | ||
412 | static struct minimal_symbol * | |
413 | find_minsym_and_objfile (char *name, struct objfile **objfile_p) | |
414 | { | |
415 | struct objfile *objfile; | |
416 | ||
417 | ALL_OBJFILES (objfile) | |
418 | { | |
419 | struct minimal_symbol *msym; | |
420 | ||
421 | ALL_OBJFILE_MSYMBOLS (objfile, msym) | |
422 | { | |
423 | if (SYMBOL_NAME (msym) | |
424 | && STREQ (SYMBOL_NAME (msym), name)) | |
425 | { | |
426 | *objfile_p = objfile; | |
427 | return msym; | |
428 | } | |
429 | } | |
430 | } | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
435 | static CORE_ADDR | |
436 | skip_hurd_resolver (CORE_ADDR pc) | |
437 | { | |
438 | /* The HURD dynamic linker is part of the GNU C library, so many | |
439 | GNU/Linux distributions use it. (All ELF versions, as far as I | |
440 | know.) An unresolved PLT entry points to "_dl_runtime_resolve", | |
441 | which calls "fixup" to patch the PLT, and then passes control to | |
442 | the function. | |
443 | ||
444 | We look for the symbol `_dl_runtime_resolve', and find `fixup' in | |
445 | the same objfile. If we are at the entry point of `fixup', then | |
446 | we set a breakpoint at the return address (at the top of the | |
447 | stack), and continue. | |
448 | ||
449 | It's kind of gross to do all these checks every time we're | |
450 | called, since they don't change once the executable has gotten | |
451 | started. But this is only a temporary hack --- upcoming versions | |
ca557f44 | 452 | of GNU/Linux will provide a portable, efficient interface for |
bafda96e MS |
453 | debugging programs that use shared libraries. */ |
454 | ||
455 | struct objfile *objfile; | |
456 | struct minimal_symbol *resolver | |
457 | = find_minsym_and_objfile ("_dl_runtime_resolve", &objfile); | |
458 | ||
459 | if (resolver) | |
460 | { | |
461 | struct minimal_symbol *fixup | |
9b27852e | 462 | = lookup_minimal_symbol ("fixup", NULL, objfile); |
bafda96e MS |
463 | |
464 | if (fixup && SYMBOL_VALUE_ADDRESS (fixup) == pc) | |
465 | return (SAVED_PC_AFTER_CALL (get_current_frame ())); | |
466 | } | |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
471 | /* See the comments for SKIP_SOLIB_RESOLVER at the top of infrun.c. | |
472 | This function: | |
473 | 1) decides whether a PLT has sent us into the linker to resolve | |
474 | a function reference, and | |
475 | 2) if so, tells us where to set a temporary breakpoint that will | |
476 | trigger when the dynamic linker is done. */ | |
477 | ||
478 | CORE_ADDR | |
479 | i386_linux_skip_solib_resolver (CORE_ADDR pc) | |
480 | { | |
481 | CORE_ADDR result; | |
482 | ||
483 | /* Plug in functions for other kinds of resolvers here. */ | |
484 | result = skip_hurd_resolver (pc); | |
485 | if (result) | |
486 | return result; | |
487 | ||
488 | return 0; | |
489 | } | |
1a8629c7 | 490 | |
305d65ca | 491 | /* Fetch (and possibly build) an appropriate link_map_offsets |
ca557f44 | 492 | structure for native GNU/Linux x86 targets using the struct offsets |
305d65ca | 493 | defined in link.h (but without actual reference to that file). |
1a8629c7 | 494 | |
ca557f44 AC |
495 | This makes it possible to access GNU/Linux x86 shared libraries |
496 | from a GDB that was not built on an GNU/Linux x86 host (for cross | |
497 | debugging). */ | |
1a8629c7 MS |
498 | |
499 | struct link_map_offsets * | |
500 | i386_linux_svr4_fetch_link_map_offsets (void) | |
501 | { | |
502 | static struct link_map_offsets lmo; | |
305d65ca | 503 | static struct link_map_offsets *lmp = NULL; |
1a8629c7 | 504 | |
305d65ca | 505 | if (lmp == NULL) |
1a8629c7 MS |
506 | { |
507 | lmp = &lmo; | |
508 | ||
305d65ca MK |
509 | lmo.r_debug_size = 8; /* The actual size is 20 bytes, but |
510 | this is all we need. */ | |
1a8629c7 MS |
511 | lmo.r_map_offset = 4; |
512 | lmo.r_map_size = 4; | |
513 | ||
305d65ca MK |
514 | lmo.link_map_size = 20; /* The actual size is 552 bytes, but |
515 | this is all we need. */ | |
1a8629c7 MS |
516 | lmo.l_addr_offset = 0; |
517 | lmo.l_addr_size = 4; | |
518 | ||
519 | lmo.l_name_offset = 4; | |
520 | lmo.l_name_size = 4; | |
521 | ||
522 | lmo.l_next_offset = 12; | |
523 | lmo.l_next_size = 4; | |
524 | ||
525 | lmo.l_prev_offset = 16; | |
526 | lmo.l_prev_size = 4; | |
527 | } | |
528 | ||
305d65ca | 529 | return lmp; |
1a8629c7 | 530 | } |