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) 2000-2012 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 */ 71static 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 */ 83static Bool should_dump(const NSegment *seg) 84{ 85 return may_dump(seg); // && seg->hasW; 86} 87 88static 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 113static 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 139struct note { 140 struct note *next; 141 ESZ(Nhdr) note; 142 Char name[0]; 143}; 144 145static 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) && !defined(VGPV_x86_linux_android) 152static 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_*_linux_android) */ 174 175static void write_note(Int fd, const struct note *n) 176{ 177 VG_(write)(fd, &n->note, note_size(n)); 178} 179 180static 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 222static 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#elif defined(VGP_mips32_linux) 368# define DO(n) regs->MIPS_r##n = arch->vex.guest_r##n 369 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); 370 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); 371 DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); 372 DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); 373# undef DO 374 regs->MIPS_hi = arch->vex.guest_HI; 375 regs->MIPS_lo = arch->vex.guest_LO; 376#else 377# error Unknown ELF platform 378#endif 379} 380 381static void fill_fpu(const ThreadState *tst, vki_elf_fpregset_t *fpu) 382{ 383 __attribute__((unused)) 384 ThreadArchState* arch = (ThreadArchState*)&tst->arch; 385 386#if defined(VGP_x86_linux) 387//:: static void fill_fpu(vki_elf_fpregset_t *fpu, const Char *from) 388//:: { 389//:: if (VG_(have_ssestate)) { 390//:: UShort *to; 391//:: Int i; 392//:: 393//:: /* This is what the kernel does */ 394//:: VG_(memcpy)(fpu, from, 7*sizeof(long)); 395//:: 396//:: to = (UShort *)&fpu->st_space[0]; 397//:: from += 18 * sizeof(UShort); 398//:: 399//:: for (i = 0; i < 8; i++, to += 5, from += 8) 400//:: VG_(memcpy)(to, from, 5*sizeof(UShort)); 401//:: } else 402//:: VG_(memcpy)(fpu, from, sizeof(*fpu)); 403//:: } 404 405//:: fill_fpu(fpu, (const Char *)&arch->m_sse); 406 407#elif defined(VGP_amd64_linux) 408//:: fpu->cwd = ?; 409//:: fpu->swd = ?; 410//:: fpu->twd = ?; 411//:: fpu->fop = ?; 412//:: fpu->rip = ?; 413//:: fpu->rdp = ?; 414//:: fpu->mxcsr = ?; 415//:: fpu->mxcsr_mask = ?; 416//:: fpu->st_space = ?; 417 418# define DO(n) VG_(memcpy)(fpu->xmm_space + n * 4, \ 419 &arch->vex.guest_YMM##n[0], 16) 420 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); 421 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); 422# undef DO 423 424 VG_(memset)(fpu->padding, 0, sizeof(fpu->padding)); 425 426#elif defined(VGP_ppc32_linux) 427 /* The guest state has the FPR fields declared as ULongs, so need 428 to fish out the values without converting them. 429 NOTE: The 32 FP registers map to the first 32 VSX registers.*/ 430# define DO(n) (*fpu)[n] = *(double*)(&arch->vex.guest_VSR##n) 431 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); 432 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); 433 DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); 434 DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); 435# undef DO 436 437#elif defined(VGP_ppc64_linux) 438 /* The guest state has the FPR fields declared as ULongs, so need 439 to fish out the values without converting them. 440 NOTE: The 32 FP registers map to the first 32 VSX registers.*/ 441# define DO(n) (*fpu)[n] = *(double*)(&arch->vex.guest_VSR##n) 442 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); 443 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); 444 DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); 445 DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); 446# undef DO 447 448#elif defined(VGP_arm_linux) 449 // umm ... 450 451#elif defined(VGP_s390x_linux) 452# define DO(n) fpu->fprs[n].ui = arch->vex.guest_f##n 453 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); 454 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); 455# undef DO 456#elif defined(VGP_mips32_linux) 457# define DO(n) (*fpu)[n] = *(double*)(&arch->vex.guest_f##n) 458 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); 459 DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); 460 DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); 461 DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); 462# undef DO 463#else 464# error Unknown ELF platform 465#endif 466} 467 468#if defined(VGP_x86_linux) && !defined(VGPV_x86_linux_android) 469static void fill_xfpu(const ThreadState *tst, vki_elf_fpxregset_t *xfpu) 470{ 471 ThreadArchState* arch = (ThreadArchState*)&tst->arch; 472 473//:: xfpu->cwd = ?; 474//:: xfpu->swd = ?; 475//:: xfpu->twd = ?; 476//:: xfpu->fop = ?; 477//:: xfpu->fip = ?; 478//:: xfpu->fcs = ?; 479//:: xfpu->foo = ?; 480//:: xfpu->fos = ?; 481//:: xfpu->mxcsr = ?; 482 xfpu->reserved = 0; 483//:: xfpu->st_space = ?; 484 485# define DO(n) VG_(memcpy)(xfpu->xmm_space + n * 4, &arch->vex.guest_XMM##n, sizeof(arch->vex.guest_XMM##n)) 486 DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); 487# undef DO 488 489 VG_(memset)(xfpu->padding, 0, sizeof(xfpu->padding)); 490} 491#endif 492 493static 494void make_elf_coredump(ThreadId tid, const vki_siginfo_t *si, UInt max_size) 495{ 496 Char* buf = NULL; 497 Char *basename = "vgcore"; 498 Char *coreext = ""; 499 Int seq = 0; 500 Int core_fd; 501 NSegment const * seg; 502 ESZ(Ehdr) ehdr; 503 ESZ(Phdr) *phdrs; 504 Int num_phdrs; 505 Int i, idx; 506 UInt off; 507 struct note *notelist, *note; 508 UInt notesz; 509 struct vki_elf_prpsinfo prpsinfo; 510 struct vki_elf_prstatus prstatus; 511 Addr *seg_starts; 512 Int n_seg_starts; 513 514 if (VG_(clo_log_fname_expanded) != NULL) { 515 coreext = ".core"; 516 basename = VG_(expand_file_name)( 517 "--log-file (while creating core filename)", 518 VG_(clo_log_fname_expanded)); 519 } 520 521 vg_assert(coreext); 522 vg_assert(basename); 523 buf = VG_(malloc)( "coredump-elf.mec.1", 524 VG_(strlen)(coreext) + VG_(strlen)(basename) 525 + 100/*for the two %ds. */ ); 526 vg_assert(buf); 527 528 for(;;) { 529 Int oflags = VKI_O_CREAT|VKI_O_WRONLY|VKI_O_EXCL|VKI_O_TRUNC; 530 SysRes sres; 531 532 if (seq == 0) 533 VG_(sprintf)(buf, "%s%s.%d", 534 basename, coreext, VG_(getpid)()); 535 else 536 VG_(sprintf)(buf, "%s%s.%d.%d", 537 basename, coreext, VG_(getpid)(), seq); 538 seq++; 539 540# if defined(VKI_O_LARGEFILE) 541 oflags |= VKI_O_LARGEFILE; 542# endif 543 544 sres = VG_(open)(buf, oflags, VKI_S_IRUSR|VKI_S_IWUSR); 545 if (!sr_isError(sres)) { 546 core_fd = sr_Res(sres); 547 break; 548 } 549 550 if (sr_isError(sres) && sr_Err(sres) != VKI_EEXIST) 551 return; /* can't create file */ 552 } 553 554 /* Get the segments */ 555 seg_starts = VG_(get_segment_starts)(&n_seg_starts); 556 557 /* First, count how many memory segments to dump */ 558 num_phdrs = 1; /* start with notes */ 559 for(i = 0; i < n_seg_starts; i++) { 560 if (!may_dump(VG_(am_find_nsegment(seg_starts[i])))) 561 continue; 562 563 num_phdrs++; 564 } 565 566 fill_ehdr(&ehdr, num_phdrs); 567 568 notelist = NULL; 569 570 /* Second, work out their layout */ 571 phdrs = VG_(arena_malloc)(VG_AR_CORE, "coredump-elf.mec.1", 572 sizeof(*phdrs) * num_phdrs); 573 574 for(i = 1; i < VG_N_THREADS; i++) { 575 vki_elf_fpregset_t fpu; 576 577 if (VG_(threads)[i].status == VgTs_Empty) 578 continue; 579 580# if defined(VGP_x86_linux) 581# if !defined(VGPV_arm_linux_android) && !defined(VGPV_x86_linux_android) 582 { 583 vki_elf_fpxregset_t xfpu; 584 fill_xfpu(&VG_(threads)[i], &xfpu); 585 add_note(¬elist, "LINUX", NT_PRXFPREG, &xfpu, sizeof(xfpu)); 586 } 587# endif 588# endif 589 590 fill_fpu(&VG_(threads)[i], &fpu); 591# if !defined(VGPV_arm_linux_android) && !defined(VGPV_x86_linux_android) 592 add_note(¬elist, "CORE", NT_FPREGSET, &fpu, sizeof(fpu)); 593# endif 594 595 fill_prstatus(&VG_(threads)[i], &prstatus, si); 596# if !defined(VGPV_arm_linux_android) && !defined(VGPV_x86_linux_android) 597 add_note(¬elist, "CORE", NT_PRSTATUS, &prstatus, sizeof(prstatus)); 598# endif 599 } 600 601 fill_prpsinfo(&VG_(threads)[tid], &prpsinfo); 602# if !defined(VGPV_arm_linux_android) && !defined(VGPV_x86_linux_android) 603 add_note(¬elist, "CORE", NT_PRPSINFO, &prpsinfo, sizeof(prpsinfo)); 604# endif 605 606 for (note = notelist, notesz = 0; note != NULL; note = note->next) 607 notesz += note_size(note); 608 609 off = sizeof(ehdr) + sizeof(*phdrs) * num_phdrs; 610 611 phdrs[0].p_type = PT_NOTE; 612 phdrs[0].p_offset = off; 613 phdrs[0].p_vaddr = 0; 614 phdrs[0].p_paddr = 0; 615 phdrs[0].p_filesz = notesz; 616 phdrs[0].p_memsz = 0; 617 phdrs[0].p_flags = 0; 618 phdrs[0].p_align = 0; 619 620 off += notesz; 621 622 off = VG_PGROUNDUP(off); 623 624 for(i = 0, idx = 1; i < n_seg_starts; i++) { 625 seg = VG_(am_find_nsegment(seg_starts[i])); 626 627 if (!may_dump(seg)) 628 continue; 629 630 fill_phdr(&phdrs[idx], seg, off, 631 (seg->end - seg->start + off) < max_size); 632 633 off += phdrs[idx].p_filesz; 634 635 idx++; 636 } 637 638 /* write everything out */ 639 VG_(write)(core_fd, &ehdr, sizeof(ehdr)); 640 VG_(write)(core_fd, phdrs, sizeof(*phdrs) * num_phdrs); 641 642 for(note = notelist; note != NULL; note = note->next) 643 write_note(core_fd, note); 644 645 VG_(lseek)(core_fd, phdrs[1].p_offset, VKI_SEEK_SET); 646 647 for(i = 0, idx = 1; i < n_seg_starts; i++) { 648 seg = VG_(am_find_nsegment(seg_starts[i])); 649 650 if (!should_dump(seg)) 651 continue; 652 653 if (phdrs[idx].p_filesz > 0) { 654 vg_assert(VG_(lseek)(core_fd, phdrs[idx].p_offset, VKI_SEEK_SET) 655 == phdrs[idx].p_offset); 656 vg_assert(seg->end - seg->start >= phdrs[idx].p_filesz); 657 658 (void)VG_(write)(core_fd, (void *)seg->start, phdrs[idx].p_filesz); 659 } 660 idx++; 661 } 662 663 VG_(free)(seg_starts); 664 665 VG_(close)(core_fd); 666} 667 668void VG_(make_coredump)(ThreadId tid, const vki_siginfo_t *si, UInt max_size) 669{ 670 make_elf_coredump(tid, si, max_size); 671} 672 673#endif // defined(VGO_linux) 674 675/*--------------------------------------------------------------------*/ 676/*--- end ---*/ 677/*--------------------------------------------------------------------*/ 678