1
2 /*--------------------------------------------------------------------*/
3 /*--- Dumping core. coredump-elf.c ---*/
4 /*--------------------------------------------------------------------*/
5
6 /*
7 This file is part of Valgrind, a dynamic binary instrumentation
8 framework.
9
10 Copyright (C) 2000-2011 Julian Seward
11 jseward@acm.org
12
13 This program is free software; you can redistribute it and/or
14 modify it under the terms of the GNU General Public License as
15 published by the Free Software Foundation; either version 2 of the
16 License, or (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful, but
19 WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
26 02111-1307, USA.
27
28 The GNU General Public License is contained in the file COPYING.
29 */
30
31 #if defined(VGO_linux)
32
33 #include "pub_core_basics.h"
34 #include "pub_core_vki.h"
35 #include "pub_core_aspacehl.h"
36 #include "pub_core_aspacemgr.h"
37 #include "pub_core_libcbase.h"
38 #include "pub_core_machine.h"
39 #include "pub_core_coredump.h"
40 #include "pub_core_libcprint.h"
41 #include "pub_core_libcfile.h" // VG_(close) et al
42 #include "pub_core_libcproc.h" // VG_(geteuid), VG_(getegid)
43 #include "pub_core_libcassert.h" // VG_(exit), vg_assert
44 #include "pub_core_mallocfree.h" // VG_(malloc), VG_(free)
45 #include "pub_core_libcsetjmp.h" // to keep _threadstate.h happy
46 #include "pub_core_threadstate.h"
47 #include "pub_core_xarray.h"
48 #include "pub_core_clientstate.h"
49 #include "pub_core_options.h"
50
51 /*
52 Dump core
53
54 Generate a standard ELF core file corresponding to the client state
55 at the time of a crash.
56 */
57 #include <elf.h>
58 #ifndef NT_PRXFPREG
59 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
60 #endif /* NT_PRXFPREG */
61
62 #if VG_WORDSIZE == 8
63 #define ESZ(x) Elf64_##x
64 #elif VG_WORDSIZE == 4
65 #define ESZ(x) Elf32_##x
66 #else
67 #error VG_WORDSIZE needs to ==4 or ==8
68 #endif
69
70 /* If true, then this Segment may be mentioned in the core */
may_dump(const NSegment * seg)71 static Bool may_dump(const NSegment *seg)
72 {
73 if (seg->kind == SkAnonC ||
74 seg->kind == SkShmC ||
75 (seg->kind == SkFileC &&
76 !VKI_S_ISCHR(seg->mode) && !VKI_S_ISBLK(seg->mode)))
77 return True;
78
79 return False;
80 }
81
82 /* If true, then this Segment's contents will be in the core */
should_dump(const NSegment * seg)83 static Bool should_dump(const NSegment *seg)
84 {
85 return may_dump(seg); // && seg->hasW;
86 }
87
fill_ehdr(ESZ (Ehdr)* ehdr,Int num_phdrs)88 static void fill_ehdr(ESZ(Ehdr) *ehdr, Int num_phdrs)
89 {
90 VG_(memset)(ehdr, 0, sizeof(*ehdr));
91
92 VG_(memcpy)(ehdr->e_ident, ELFMAG, SELFMAG);
93 ehdr->e_ident[EI_CLASS] = VG_ELF_CLASS;
94 ehdr->e_ident[EI_DATA] = VG_ELF_DATA2XXX;
95 ehdr->e_ident[EI_VERSION] = EV_CURRENT;
96
97 ehdr->e_type = ET_CORE;
98 ehdr->e_machine = VG_ELF_MACHINE;
99 ehdr->e_version = EV_CURRENT;
100 ehdr->e_entry = 0;
101 ehdr->e_phoff = sizeof(ESZ(Ehdr));
102 ehdr->e_shoff = 0;
103 ehdr->e_flags = 0;
104 ehdr->e_ehsize = sizeof(ESZ(Ehdr));
105 ehdr->e_phentsize = sizeof(ESZ(Phdr));
106 ehdr->e_phnum = num_phdrs;
107 ehdr->e_shentsize = 0;
108 ehdr->e_shnum = 0;
109 ehdr->e_shstrndx = 0;
110
111 }
112
fill_phdr(ESZ (Phdr)* phdr,const NSegment * seg,UInt off,Bool write)113 static void fill_phdr(ESZ(Phdr) *phdr, const NSegment *seg, UInt off, Bool write)
114 {
115 SizeT len = seg->end - seg->start;
116
117 write = write && should_dump(seg);
118
119 VG_(memset)(phdr, 0, sizeof(*phdr));
120
121 phdr->p_type = PT_LOAD;
122 phdr->p_offset = off;
123 phdr->p_vaddr = seg->start;
124 phdr->p_paddr = 0;
125 phdr->p_filesz = write ? len : 0;
126 phdr->p_memsz = len;
127 phdr->p_flags = 0;
128
129 if (seg->hasR)
130 phdr->p_flags |= PF_R;
131 if (seg->hasW)
132 phdr->p_flags |= PF_W;
133 if (seg->hasX)
134 phdr->p_flags |= PF_X;
135
136 phdr->p_align = VKI_PAGE_SIZE;
137 }
138
139 struct note {
140 struct note *next;
141 ESZ(Nhdr) note;
142 Char name[0];
143 };
144
note_size(const struct note * n)145 static UInt note_size(const struct note *n)
146 {
147 return sizeof(ESZ(Nhdr)) + VG_ROUNDUP(VG_(strlen)(n->name)+1, 4)
148 + VG_ROUNDUP(n->note.n_descsz, 4);
149 }
150
151 #if !defined(VGPV_arm_linux_android)
add_note(struct note ** list,const Char * name,UInt type,const void * data,UInt datasz)152 static void add_note(struct note **list, const Char *name, UInt type,
153 const void *data, UInt datasz)
154 {
155 Int namelen = VG_(strlen)(name)+1;
156 Int notelen = sizeof(struct note) +
157 VG_ROUNDUP(namelen, 4) +
158 VG_ROUNDUP(datasz, 4);
159 struct note *n = VG_(arena_malloc)(VG_AR_CORE, "coredump-elf.an.1", notelen);
160
161 VG_(memset)(n, 0, notelen);
162
163 n->next = *list;
164 *list = n;
165
166 n->note.n_type = type;
167 n->note.n_namesz = namelen;
168 n->note.n_descsz = datasz;
169
170 VG_(memcpy)(n->name, name, namelen);
171 VG_(memcpy)(n->name+VG_ROUNDUP(namelen,4), data, datasz);
172 }
173 #endif /* !defined(VGPV_arm_linux_android) */
174
write_note(Int fd,const struct note * n)175 static void write_note(Int fd, const struct note *n)
176 {
177 VG_(write)(fd, &n->note, note_size(n));
178 }
179
fill_prpsinfo(const ThreadState * tst,struct vki_elf_prpsinfo * prpsinfo)180 static void fill_prpsinfo(const ThreadState *tst,
181 struct vki_elf_prpsinfo *prpsinfo)
182 {
183 static Char name[VKI_PATH_MAX];
184
185 VG_(memset)(prpsinfo, 0, sizeof(*prpsinfo));
186
187 switch(tst->status) {
188 case VgTs_Runnable:
189 case VgTs_Yielding:
190 prpsinfo->pr_sname = 'R';
191 break;
192
193 case VgTs_WaitSys:
194 prpsinfo->pr_sname = 'S';
195 break;
196
197 case VgTs_Zombie:
198 prpsinfo->pr_sname = 'Z';
199 break;
200
201 case VgTs_Empty:
202 case VgTs_Init:
203 prpsinfo->pr_sname = '?';
204 break;
205 }
206
207 prpsinfo->pr_uid = 0;
208 prpsinfo->pr_gid = 0;
209
210 if (VG_(resolve_filename)(VG_(cl_exec_fd), name, VKI_PATH_MAX)) {
211 Char *n = name+VG_(strlen)(name)-1;
212
213 while (n > name && *n != '/')
214 n--;
215 if (n != name)
216 n++;
217
218 VG_(strncpy)(prpsinfo->pr_fname, n, sizeof(prpsinfo->pr_fname));
219 }
220 }
221
fill_prstatus(const ThreadState * tst,struct vki_elf_prstatus * prs,const vki_siginfo_t * si)222 static void fill_prstatus(const ThreadState *tst,
223 struct vki_elf_prstatus *prs,
224 const vki_siginfo_t *si)
225 {
226 struct vki_user_regs_struct *regs;
227 ThreadArchState* arch = (ThreadArchState*)&tst->arch;
228
229 VG_(memset)(prs, 0, sizeof(*prs));
230
231 prs->pr_info.si_signo = si->si_signo;
232 prs->pr_info.si_code = si->si_code;
233 prs->pr_info.si_errno = 0;
234
235 prs->pr_cursig = si->si_signo;
236
237 prs->pr_pid = tst->os_state.lwpid;
238 prs->pr_ppid = 0;
239 prs->pr_pgrp = VG_(getpgrp)();
240 prs->pr_sid = VG_(getpgrp)();
241
242 #ifdef VGP_s390x_linux
243 /* prs->pr_reg has struct type. Need to take address. */
244 regs = (struct vki_user_regs_struct *)&(prs->pr_reg);
245 #else
246 regs = (struct vki_user_regs_struct *)prs->pr_reg;
247
248 vg_assert(sizeof(*regs) == sizeof(prs->pr_reg));
249 #endif
250
251 #if defined(VGP_x86_linux)
252 regs->eflags = LibVEX_GuestX86_get_eflags( &arch->vex );
253 regs->esp = arch->vex.guest_ESP;
254 regs->eip = arch->vex.guest_EIP;
255
256 regs->ebx = arch->vex.guest_EBX;
257 regs->ecx = arch->vex.guest_ECX;
258 regs->edx = arch->vex.guest_EDX;
259 regs->esi = arch->vex.guest_ESI;
260 regs->edi = arch->vex.guest_EDI;
261 regs->ebp = arch->vex.guest_EBP;
262 regs->eax = arch->vex.guest_EAX;
263
264 regs->cs = arch->vex.guest_CS;
265 regs->ds = arch->vex.guest_DS;
266 regs->ss = arch->vex.guest_SS;
267 regs->es = arch->vex.guest_ES;
268 regs->fs = arch->vex.guest_FS;
269 regs->gs = arch->vex.guest_GS;
270
271 #elif defined(VGP_amd64_linux)
272 regs->eflags = LibVEX_GuestAMD64_get_rflags( &((ThreadArchState*)arch)->vex );
273 regs->rsp = arch->vex.guest_RSP;
274 regs->rip = arch->vex.guest_RIP;
275
276 regs->rbx = arch->vex.guest_RBX;
277 regs->rcx = arch->vex.guest_RCX;
278 regs->rdx = arch->vex.guest_RDX;
279 regs->rsi = arch->vex.guest_RSI;
280 regs->rdi = arch->vex.guest_RDI;
281 regs->rbp = arch->vex.guest_RBP;
282 regs->rax = arch->vex.guest_RAX;
283 regs->r8 = arch->vex.guest_R8;
284 regs->r9 = arch->vex.guest_R9;
285 regs->r10 = arch->vex.guest_R10;
286 regs->r11 = arch->vex.guest_R11;
287 regs->r12 = arch->vex.guest_R12;
288 regs->r13 = arch->vex.guest_R13;
289 regs->r14 = arch->vex.guest_R14;
290 regs->r15 = arch->vex.guest_R15;
291
292 //:: regs->cs = arch->vex.guest_CS;
293 //:: regs->fs = arch->vex.guest_FS;
294 //:: regs->gs = arch->vex.guest_GS;
295
296 #elif defined(VGP_ppc32_linux)
297 # define DO(n) regs->gpr[n] = arch->vex.guest_GPR##n
298 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
299 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15);
300 DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23);
301 DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31);
302 # undef DO
303
304 regs->nip = arch->vex.guest_CIA;
305 regs->msr = 0xf032; /* pretty arbitrary */
306 regs->orig_gpr3 = arch->vex.guest_GPR3;
307 regs->ctr = arch->vex.guest_CTR;
308 regs->link = arch->vex.guest_LR;
309 regs->xer = LibVEX_GuestPPC32_get_XER( &((ThreadArchState*)arch)->vex );
310 regs->ccr = LibVEX_GuestPPC32_get_CR( &((ThreadArchState*)arch)->vex );
311 regs->mq = 0;
312 regs->trap = 0;
313 regs->dar = 0; /* should be fault address? */
314 regs->dsisr = 0;
315 regs->result = 0;
316
317 #elif defined(VGP_ppc64_linux)
318 # define DO(n) regs->gpr[n] = arch->vex.guest_GPR##n
319 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
320 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15);
321 DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23);
322 DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31);
323 # undef DO
324
325 regs->nip = arch->vex.guest_CIA;
326 regs->msr = 0xf032; /* pretty arbitrary */
327 regs->orig_gpr3 = arch->vex.guest_GPR3;
328 regs->ctr = arch->vex.guest_CTR;
329 regs->link = arch->vex.guest_LR;
330 regs->xer = LibVEX_GuestPPC64_get_XER( &((ThreadArchState*)arch)->vex );
331 regs->ccr = LibVEX_GuestPPC64_get_CR( &((ThreadArchState*)arch)->vex );
332 /* regs->mq = 0; */
333 regs->trap = 0;
334 regs->dar = 0; /* should be fault address? */
335 regs->dsisr = 0;
336 regs->result = 0;
337
338 #elif defined(VGP_arm_linux)
339 regs->ARM_r0 = arch->vex.guest_R0;
340 regs->ARM_r1 = arch->vex.guest_R1;
341 regs->ARM_r2 = arch->vex.guest_R2;
342 regs->ARM_r3 = arch->vex.guest_R3;
343 regs->ARM_r4 = arch->vex.guest_R4;
344 regs->ARM_r5 = arch->vex.guest_R5;
345 regs->ARM_r6 = arch->vex.guest_R6;
346 regs->ARM_r7 = arch->vex.guest_R7;
347 regs->ARM_r8 = arch->vex.guest_R8;
348 regs->ARM_r9 = arch->vex.guest_R9;
349 regs->ARM_r10 = arch->vex.guest_R10;
350 regs->ARM_fp = arch->vex.guest_R11;
351 regs->ARM_ip = arch->vex.guest_R12;
352 regs->ARM_sp = arch->vex.guest_R13;
353 regs->ARM_lr = arch->vex.guest_R14;
354 regs->ARM_pc = arch->vex.guest_R15T;
355 regs->ARM_cpsr = LibVEX_GuestARM_get_cpsr( &((ThreadArchState*)arch)->vex );
356
357 #elif defined(VGP_s390x_linux)
358 # define DO(n) regs->gprs[n] = arch->vex.guest_r##n
359 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
360 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15);
361 # undef DO
362 # define DO(n) regs->acrs[n] = arch->vex.guest_a##n
363 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
364 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15);
365 # undef DO
366 regs->orig_gpr2 = arch->vex.guest_r2;
367 #else
368 # error Unknown ELF platform
369 #endif
370 }
371
fill_fpu(const ThreadState * tst,vki_elf_fpregset_t * fpu)372 static void fill_fpu(const ThreadState *tst, vki_elf_fpregset_t *fpu)
373 {
374 __attribute__((unused))
375 ThreadArchState* arch = (ThreadArchState*)&tst->arch;
376
377 #if defined(VGP_x86_linux)
378 //:: static void fill_fpu(vki_elf_fpregset_t *fpu, const Char *from)
379 //:: {
380 //:: if (VG_(have_ssestate)) {
381 //:: UShort *to;
382 //:: Int i;
383 //::
384 //:: /* This is what the kernel does */
385 //:: VG_(memcpy)(fpu, from, 7*sizeof(long));
386 //::
387 //:: to = (UShort *)&fpu->st_space[0];
388 //:: from += 18 * sizeof(UShort);
389 //::
390 //:: for (i = 0; i < 8; i++, to += 5, from += 8)
391 //:: VG_(memcpy)(to, from, 5*sizeof(UShort));
392 //:: } else
393 //:: VG_(memcpy)(fpu, from, sizeof(*fpu));
394 //:: }
395
396 //:: fill_fpu(fpu, (const Char *)&arch->m_sse);
397
398 #elif defined(VGP_amd64_linux)
399 //:: fpu->cwd = ?;
400 //:: fpu->swd = ?;
401 //:: fpu->twd = ?;
402 //:: fpu->fop = ?;
403 //:: fpu->rip = ?;
404 //:: fpu->rdp = ?;
405 //:: fpu->mxcsr = ?;
406 //:: fpu->mxcsr_mask = ?;
407 //:: fpu->st_space = ?;
408
409 # define DO(n) VG_(memcpy)(fpu->xmm_space + n * 4, &arch->vex.guest_XMM##n, sizeof(arch->vex.guest_XMM##n))
410 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
411 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15);
412 # undef DO
413
414 VG_(memset)(fpu->padding, 0, sizeof(fpu->padding));
415
416 #elif defined(VGP_ppc32_linux)
417 /* The guest state has the FPR fields declared as ULongs, so need
418 to fish out the values without converting them.
419 NOTE: The 32 FP registers map to the first 32 VSX registers.*/
420 # define DO(n) (*fpu)[n] = *(double*)(&arch->vex.guest_VSR##n)
421 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
422 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15);
423 DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23);
424 DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31);
425 # undef DO
426
427 #elif defined(VGP_ppc64_linux)
428 /* The guest state has the FPR fields declared as ULongs, so need
429 to fish out the values without converting them.
430 NOTE: The 32 FP registers map to the first 32 VSX registers.*/
431 # define DO(n) (*fpu)[n] = *(double*)(&arch->vex.guest_VSR##n)
432 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
433 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15);
434 DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23);
435 DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31);
436 # undef DO
437
438 #elif defined(VGP_arm_linux)
439 // umm ...
440
441 #elif defined(VGP_s390x_linux)
442 # define DO(n) fpu->fprs[n].ui = arch->vex.guest_f##n
443 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
444 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15);
445 # undef DO
446 #else
447 # error Unknown ELF platform
448 #endif
449 }
450
451 #if defined(VGP_x86_linux)
fill_xfpu(const ThreadState * tst,vki_elf_fpxregset_t * xfpu)452 static void fill_xfpu(const ThreadState *tst, vki_elf_fpxregset_t *xfpu)
453 {
454 ThreadArchState* arch = (ThreadArchState*)&tst->arch;
455
456 //:: xfpu->cwd = ?;
457 //:: xfpu->swd = ?;
458 //:: xfpu->twd = ?;
459 //:: xfpu->fop = ?;
460 //:: xfpu->fip = ?;
461 //:: xfpu->fcs = ?;
462 //:: xfpu->foo = ?;
463 //:: xfpu->fos = ?;
464 //:: xfpu->mxcsr = ?;
465 xfpu->reserved = 0;
466 //:: xfpu->st_space = ?;
467
468 # define DO(n) VG_(memcpy)(xfpu->xmm_space + n * 4, &arch->vex.guest_XMM##n, sizeof(arch->vex.guest_XMM##n))
469 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7);
470 # undef DO
471
472 VG_(memset)(xfpu->padding, 0, sizeof(xfpu->padding));
473 }
474 #endif
475
476 static
make_elf_coredump(ThreadId tid,const vki_siginfo_t * si,UInt max_size)477 void make_elf_coredump(ThreadId tid, const vki_siginfo_t *si, UInt max_size)
478 {
479 Char* buf = NULL;
480 Char *basename = "vgcore";
481 Char *coreext = "";
482 Int seq = 0;
483 Int core_fd;
484 NSegment const * seg;
485 ESZ(Ehdr) ehdr;
486 ESZ(Phdr) *phdrs;
487 Int num_phdrs;
488 Int i, idx;
489 UInt off;
490 struct note *notelist, *note;
491 UInt notesz;
492 struct vki_elf_prpsinfo prpsinfo;
493 struct vki_elf_prstatus prstatus;
494 Addr *seg_starts;
495 Int n_seg_starts;
496
497 if (VG_(clo_log_fname_expanded) != NULL) {
498 coreext = ".core";
499 basename = VG_(expand_file_name)(
500 "--log-file (while creating core filename)",
501 VG_(clo_log_fname_expanded));
502 }
503
504 vg_assert(coreext);
505 vg_assert(basename);
506 buf = VG_(malloc)( "coredump-elf.mec.1",
507 VG_(strlen)(coreext) + VG_(strlen)(basename)
508 + 100/*for the two %ds. */ );
509 vg_assert(buf);
510
511 for(;;) {
512 Int oflags = VKI_O_CREAT|VKI_O_WRONLY|VKI_O_EXCL|VKI_O_TRUNC;
513 SysRes sres;
514
515 if (seq == 0)
516 VG_(sprintf)(buf, "%s%s.%d",
517 basename, coreext, VG_(getpid)());
518 else
519 VG_(sprintf)(buf, "%s%s.%d.%d",
520 basename, coreext, VG_(getpid)(), seq);
521 seq++;
522
523 # if defined(VKI_O_LARGEFILE)
524 oflags |= VKI_O_LARGEFILE;
525 # endif
526
527 sres = VG_(open)(buf, oflags, VKI_S_IRUSR|VKI_S_IWUSR);
528 if (!sr_isError(sres)) {
529 core_fd = sr_Res(sres);
530 break;
531 }
532
533 if (sr_isError(sres) && sr_Err(sres) != VKI_EEXIST)
534 return; /* can't create file */
535 }
536
537 /* Get the segments */
538 seg_starts = VG_(get_segment_starts)(&n_seg_starts);
539
540 /* First, count how many memory segments to dump */
541 num_phdrs = 1; /* start with notes */
542 for(i = 0; i < n_seg_starts; i++) {
543 if (!may_dump(VG_(am_find_nsegment(seg_starts[i]))))
544 continue;
545
546 num_phdrs++;
547 }
548
549 fill_ehdr(&ehdr, num_phdrs);
550
551 notelist = NULL;
552
553 /* Second, work out their layout */
554 phdrs = VG_(arena_malloc)(VG_AR_CORE, "coredump-elf.mec.1",
555 sizeof(*phdrs) * num_phdrs);
556
557 for(i = 1; i < VG_N_THREADS; i++) {
558 vki_elf_fpregset_t fpu;
559
560 if (VG_(threads)[i].status == VgTs_Empty)
561 continue;
562
563 # if defined(VGP_x86_linux)
564 {
565 vki_elf_fpxregset_t xfpu;
566 fill_xfpu(&VG_(threads)[i], &xfpu);
567 add_note(¬elist, "LINUX", NT_PRXFPREG, &xfpu, sizeof(xfpu));
568 }
569 # endif
570
571 fill_fpu(&VG_(threads)[i], &fpu);
572 # if !defined(VGPV_arm_linux_android) && !defined(VGPV_x86_linux_android)
573 add_note(¬elist, "CORE", NT_FPREGSET, &fpu, sizeof(fpu));
574 # endif
575
576 fill_prstatus(&VG_(threads)[i], &prstatus, si);
577 # if !defined(VGPV_arm_linux_android) && !defined(VGPV_x86_linux_android)
578 add_note(¬elist, "CORE", NT_PRSTATUS, &prstatus, sizeof(prstatus));
579 # endif
580 }
581
582 fill_prpsinfo(&VG_(threads)[tid], &prpsinfo);
583 # if !defined(VGPV_arm_linux_android) && !defined(VGPV_x86_linux_android)
584 add_note(¬elist, "CORE", NT_PRPSINFO, &prpsinfo, sizeof(prpsinfo));
585 # endif
586
587 for (note = notelist, notesz = 0; note != NULL; note = note->next)
588 notesz += note_size(note);
589
590 off = sizeof(ehdr) + sizeof(*phdrs) * num_phdrs;
591
592 phdrs[0].p_type = PT_NOTE;
593 phdrs[0].p_offset = off;
594 phdrs[0].p_vaddr = 0;
595 phdrs[0].p_paddr = 0;
596 phdrs[0].p_filesz = notesz;
597 phdrs[0].p_memsz = 0;
598 phdrs[0].p_flags = 0;
599 phdrs[0].p_align = 0;
600
601 off += notesz;
602
603 off = VG_PGROUNDUP(off);
604
605 for(i = 0, idx = 1; i < n_seg_starts; i++) {
606 seg = VG_(am_find_nsegment(seg_starts[i]));
607
608 if (!may_dump(seg))
609 continue;
610
611 fill_phdr(&phdrs[idx], seg, off,
612 (seg->end - seg->start + off) < max_size);
613
614 off += phdrs[idx].p_filesz;
615
616 idx++;
617 }
618
619 /* write everything out */
620 VG_(write)(core_fd, &ehdr, sizeof(ehdr));
621 VG_(write)(core_fd, phdrs, sizeof(*phdrs) * num_phdrs);
622
623 for(note = notelist; note != NULL; note = note->next)
624 write_note(core_fd, note);
625
626 VG_(lseek)(core_fd, phdrs[1].p_offset, VKI_SEEK_SET);
627
628 for(i = 0, idx = 1; i < n_seg_starts; i++) {
629 seg = VG_(am_find_nsegment(seg_starts[i]));
630
631 if (!should_dump(seg))
632 continue;
633
634 if (phdrs[idx].p_filesz > 0) {
635 vg_assert(VG_(lseek)(core_fd, phdrs[idx].p_offset, VKI_SEEK_SET)
636 == phdrs[idx].p_offset);
637 vg_assert(seg->end - seg->start >= phdrs[idx].p_filesz);
638
639 (void)VG_(write)(core_fd, (void *)seg->start, phdrs[idx].p_filesz);
640 }
641 idx++;
642 }
643
644 VG_(free)(seg_starts);
645
646 VG_(close)(core_fd);
647 }
648
VG_(make_coredump)649 void VG_(make_coredump)(ThreadId tid, const vki_siginfo_t *si, UInt max_size)
650 {
651 make_elf_coredump(tid, si, max_size);
652 }
653
654 #endif // defined(VGO_linux)
655
656 /*--------------------------------------------------------------------*/
657 /*--- end ---*/
658 /*--------------------------------------------------------------------*/
659