| |
| /*--------------------------------------------------------------------*/ |
| /*--- Dumping core. coredump-elf.c ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2000-2015 Julian Seward |
| jseward@acm.org |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #if defined(VGO_linux) |
| |
| #include "pub_core_basics.h" |
| #include "pub_core_vki.h" |
| #include "pub_core_aspacehl.h" |
| #include "pub_core_aspacemgr.h" |
| #include "pub_core_libcbase.h" |
| #include "pub_core_machine.h" |
| #include "pub_core_coredump.h" |
| #include "pub_core_libcprint.h" |
| #include "pub_core_libcfile.h" // VG_(close) et al |
| #include "pub_core_libcproc.h" // VG_(geteuid), VG_(getegid) |
| #include "pub_core_libcassert.h" // VG_(exit), vg_assert |
| #include "pub_core_mallocfree.h" // VG_(malloc), VG_(free) |
| #include "pub_core_threadstate.h" |
| #include "pub_core_xarray.h" |
| #include "pub_core_clientstate.h" |
| #include "pub_core_options.h" |
| |
| /* |
| Dump core |
| |
| Generate a standard ELF core file corresponding to the client state |
| at the time of a crash. |
| */ |
| #include <elf.h> |
| #ifndef NT_PRXFPREG |
| #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ |
| #endif /* NT_PRXFPREG */ |
| |
| #if VG_WORDSIZE == 8 |
| #define ESZ(x) Elf64_##x |
| #elif VG_WORDSIZE == 4 |
| #define ESZ(x) Elf32_##x |
| #else |
| #error VG_WORDSIZE needs to ==4 or ==8 |
| #endif |
| |
| /* If true, then this Segment may be mentioned in the core */ |
| static Bool may_dump(const NSegment *seg) |
| { |
| if (seg->kind == SkAnonC || |
| seg->kind == SkShmC || |
| (seg->kind == SkFileC && |
| !VKI_S_ISCHR(seg->mode) && !VKI_S_ISBLK(seg->mode))) |
| return True; |
| |
| return False; |
| } |
| |
| /* If true, then this Segment's contents will be in the core */ |
| static Bool should_dump(const NSegment *seg) |
| { |
| return may_dump(seg); // && seg->hasW; |
| } |
| |
| static void fill_ehdr(ESZ(Ehdr) *ehdr, Int num_phdrs) |
| { |
| VG_(memset)(ehdr, 0, sizeof(*ehdr)); |
| |
| VG_(memcpy)(ehdr->e_ident, ELFMAG, SELFMAG); |
| ehdr->e_ident[EI_CLASS] = VG_ELF_CLASS; |
| ehdr->e_ident[EI_DATA] = VG_ELF_DATA2XXX; |
| ehdr->e_ident[EI_VERSION] = EV_CURRENT; |
| |
| ehdr->e_type = ET_CORE; |
| ehdr->e_machine = VG_ELF_MACHINE; |
| ehdr->e_version = EV_CURRENT; |
| ehdr->e_entry = 0; |
| ehdr->e_phoff = sizeof(ESZ(Ehdr)); |
| ehdr->e_shoff = 0; |
| ehdr->e_flags = 0; |
| ehdr->e_ehsize = sizeof(ESZ(Ehdr)); |
| ehdr->e_phentsize = sizeof(ESZ(Phdr)); |
| ehdr->e_phnum = num_phdrs; |
| ehdr->e_shentsize = 0; |
| ehdr->e_shnum = 0; |
| ehdr->e_shstrndx = 0; |
| |
| } |
| |
| static void fill_phdr(ESZ(Phdr) *phdr, const NSegment *seg, UInt off, Bool write) |
| { |
| SizeT len = seg->end - seg->start + 1; |
| |
| write = write && should_dump(seg); |
| |
| VG_(memset)(phdr, 0, sizeof(*phdr)); |
| |
| phdr->p_type = PT_LOAD; |
| phdr->p_offset = off; |
| phdr->p_vaddr = seg->start; |
| phdr->p_paddr = 0; |
| phdr->p_filesz = write ? len : 0; |
| phdr->p_memsz = len; |
| phdr->p_flags = 0; |
| |
| if (seg->hasR) |
| phdr->p_flags |= PF_R; |
| if (seg->hasW) |
| phdr->p_flags |= PF_W; |
| if (seg->hasX) |
| phdr->p_flags |= PF_X; |
| |
| phdr->p_align = VKI_PAGE_SIZE; |
| } |
| |
| struct note { |
| struct note *next; |
| ESZ(Nhdr) note; |
| HChar name[0]; |
| }; |
| |
| static UInt note_size(const struct note *n) |
| { |
| return sizeof(ESZ(Nhdr)) + VG_ROUNDUP(VG_(strlen)(n->name)+1, 4) |
| + VG_ROUNDUP(n->note.n_descsz, 4); |
| } |
| |
| #if !defined(VGPV_arm_linux_android) \ |
| && !defined(VGPV_x86_linux_android) \ |
| && !defined(VGPV_mips32_linux_android) \ |
| && !defined(VGPV_arm64_linux_android) |
| static void add_note(struct note **list, const HChar *name, UInt type, |
| const void *data, UInt datasz) |
| { |
| Int namelen = VG_(strlen)(name)+1; |
| Int notelen = sizeof(struct note) + |
| VG_ROUNDUP(namelen, 4) + |
| VG_ROUNDUP(datasz, 4); |
| struct note *n = VG_(malloc)("coredump-elf.an.1", notelen); |
| |
| VG_(memset)(n, 0, notelen); |
| |
| n->next = *list; |
| *list = n; |
| |
| n->note.n_type = type; |
| n->note.n_namesz = namelen; |
| n->note.n_descsz = datasz; |
| |
| VG_(memcpy)(n->name, name, namelen); |
| VG_(memcpy)(n->name+VG_ROUNDUP(namelen,4), data, datasz); |
| } |
| #endif /* !defined(VGPV_*_linux_android) */ |
| |
| static void write_note(Int fd, const struct note *n) |
| { |
| VG_(write)(fd, &n->note, note_size(n)); |
| } |
| |
| static void fill_prpsinfo(const ThreadState *tst, |
| struct vki_elf_prpsinfo *prpsinfo) |
| { |
| VG_(memset)(prpsinfo, 0, sizeof(*prpsinfo)); |
| |
| switch(tst->status) { |
| case VgTs_Runnable: |
| case VgTs_Yielding: |
| prpsinfo->pr_sname = 'R'; |
| break; |
| |
| case VgTs_WaitSys: |
| prpsinfo->pr_sname = 'S'; |
| break; |
| |
| case VgTs_Zombie: |
| prpsinfo->pr_sname = 'Z'; |
| break; |
| |
| case VgTs_Empty: |
| case VgTs_Init: |
| prpsinfo->pr_sname = '?'; |
| break; |
| } |
| |
| prpsinfo->pr_uid = 0; |
| prpsinfo->pr_gid = 0; |
| |
| VG_(client_fname)(prpsinfo->pr_fname, sizeof(prpsinfo->pr_fname), False); |
| } |
| |
| static void fill_prstatus(const ThreadState *tst, |
| /*OUT*/struct vki_elf_prstatus *prs, |
| const vki_siginfo_t *si) |
| { |
| struct vki_user_regs_struct *regs; |
| const ThreadArchState* arch = &tst->arch; |
| |
| VG_(memset)(prs, 0, sizeof(*prs)); |
| |
| prs->pr_info.si_signo = si->si_signo; |
| prs->pr_info.si_code = si->si_code; |
| prs->pr_info.si_errno = 0; |
| |
| prs->pr_cursig = si->si_signo; |
| |
| prs->pr_pid = tst->os_state.lwpid; |
| prs->pr_ppid = 0; |
| prs->pr_pgrp = VG_(getpgrp)(); |
| prs->pr_sid = VG_(getpgrp)(); |
| |
| #if defined(VGP_s390x_linux) |
| /* prs->pr_reg has struct type. Need to take address. */ |
| regs = (struct vki_user_regs_struct *)&(prs->pr_reg); |
| #else |
| regs = (struct vki_user_regs_struct *)prs->pr_reg; |
| vg_assert(sizeof(*regs) == sizeof(prs->pr_reg)); |
| #endif |
| |
| #if defined(VGP_x86_linux) |
| regs->eflags = LibVEX_GuestX86_get_eflags( &arch->vex ); |
| regs->esp = arch->vex.guest_ESP; |
| regs->eip = arch->vex.guest_EIP; |
| |
| regs->ebx = arch->vex.guest_EBX; |
| regs->ecx = arch->vex.guest_ECX; |
| regs->edx = arch->vex.guest_EDX; |
| regs->esi = arch->vex.guest_ESI; |
| regs->edi = arch->vex.guest_EDI; |
| regs->ebp = arch->vex.guest_EBP; |
| regs->eax = arch->vex.guest_EAX; |
| |
| regs->cs = arch->vex.guest_CS; |
| regs->ds = arch->vex.guest_DS; |
| regs->ss = arch->vex.guest_SS; |
| regs->es = arch->vex.guest_ES; |
| regs->fs = arch->vex.guest_FS; |
| regs->gs = arch->vex.guest_GS; |
| |
| #elif defined(VGP_amd64_linux) |
| regs->eflags = LibVEX_GuestAMD64_get_rflags( &arch->vex ); |
| regs->rsp = arch->vex.guest_RSP; |
| regs->rip = arch->vex.guest_RIP; |
| |
| regs->rbx = arch->vex.guest_RBX; |
| regs->rcx = arch->vex.guest_RCX; |
| regs->rdx = arch->vex.guest_RDX; |
| regs->rsi = arch->vex.guest_RSI; |
| regs->rdi = arch->vex.guest_RDI; |
| regs->rbp = arch->vex.guest_RBP; |
| regs->rax = arch->vex.guest_RAX; |
| regs->r8 = arch->vex.guest_R8; |
| regs->r9 = arch->vex.guest_R9; |
| regs->r10 = arch->vex.guest_R10; |
| regs->r11 = arch->vex.guest_R11; |
| regs->r12 = arch->vex.guest_R12; |
| regs->r13 = arch->vex.guest_R13; |
| regs->r14 = arch->vex.guest_R14; |
| regs->r15 = arch->vex.guest_R15; |
| |
| #elif defined(VGP_ppc32_linux) |
| # define DO(n) regs->gpr[n] = arch->vex.guest_GPR##n |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| # undef DO |
| |
| regs->nip = arch->vex.guest_CIA; |
| regs->msr = 0xf032; /* pretty arbitrary */ |
| regs->orig_gpr3 = arch->vex.guest_GPR3; |
| regs->ctr = arch->vex.guest_CTR; |
| regs->link = arch->vex.guest_LR; |
| regs->xer = LibVEX_GuestPPC32_get_XER( &arch->vex ); |
| regs->ccr = LibVEX_GuestPPC32_get_CR( &arch->vex ); |
| regs->mq = 0; |
| regs->trap = 0; |
| regs->dar = 0; /* should be fault address? */ |
| regs->dsisr = 0; |
| regs->result = 0; |
| |
| #elif defined(VGP_ppc64be_linux) |
| # define DO(n) regs->gpr[n] = arch->vex.guest_GPR##n |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| # undef DO |
| |
| regs->nip = arch->vex.guest_CIA; |
| regs->msr = 0xf032; /* pretty arbitrary */ |
| regs->orig_gpr3 = arch->vex.guest_GPR3; |
| regs->ctr = arch->vex.guest_CTR; |
| regs->link = arch->vex.guest_LR; |
| regs->xer = LibVEX_GuestPPC64_get_XER( &arch->vex ); |
| regs->ccr = LibVEX_GuestPPC64_get_CR( &arch->vex ); |
| /* regs->mq = 0; */ |
| regs->trap = 0; |
| regs->dar = 0; /* should be fault address? */ |
| regs->dsisr = 0; |
| regs->result = 0; |
| |
| #elif defined(VGP_ppc64le_linux) |
| # define DO(n) regs->gpr[n] = arch->vex.guest_GPR##n |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| # undef DO |
| |
| regs->nip = arch->vex.guest_CIA; |
| regs->msr = 0xf033; /* pretty arbitrary */ |
| regs->orig_gpr3 = arch->vex.guest_GPR3; |
| regs->ctr = arch->vex.guest_CTR; |
| regs->link = arch->vex.guest_LR; |
| regs->xer = LibVEX_GuestPPC64_get_XER( &(arch->vex) ); |
| regs->ccr = LibVEX_GuestPPC64_get_CR( &(arch->vex) ); |
| /* regs->mq = 0; */ |
| regs->trap = 0; |
| regs->dar = 0; /* should be fault address? */ |
| regs->dsisr = 0; |
| regs->result = 0; |
| |
| #elif defined(VGP_arm_linux) |
| regs->ARM_r0 = arch->vex.guest_R0; |
| regs->ARM_r1 = arch->vex.guest_R1; |
| regs->ARM_r2 = arch->vex.guest_R2; |
| regs->ARM_r3 = arch->vex.guest_R3; |
| regs->ARM_r4 = arch->vex.guest_R4; |
| regs->ARM_r5 = arch->vex.guest_R5; |
| regs->ARM_r6 = arch->vex.guest_R6; |
| regs->ARM_r7 = arch->vex.guest_R7; |
| regs->ARM_r8 = arch->vex.guest_R8; |
| regs->ARM_r9 = arch->vex.guest_R9; |
| regs->ARM_r10 = arch->vex.guest_R10; |
| regs->ARM_fp = arch->vex.guest_R11; |
| regs->ARM_ip = arch->vex.guest_R12; |
| regs->ARM_sp = arch->vex.guest_R13; |
| regs->ARM_lr = arch->vex.guest_R14; |
| regs->ARM_pc = arch->vex.guest_R15T; |
| regs->ARM_cpsr = LibVEX_GuestARM_get_cpsr( &arch->vex ); |
| |
| #elif defined(VGP_arm64_linux) |
| (void)arch; |
| I_die_here; |
| |
| #elif defined(VGP_s390x_linux) |
| # define DO(n) regs->gprs[n] = arch->vex.guest_r##n |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| # undef DO |
| # define DO(n) regs->acrs[n] = arch->vex.guest_a##n |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| # undef DO |
| regs->orig_gpr2 = arch->vex.guest_r2; |
| |
| #elif defined(VGP_mips32_linux) |
| # define DO(n) regs->MIPS_r##n = arch->vex.guest_r##n |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| # undef DO |
| regs->MIPS_hi = arch->vex.guest_HI; |
| regs->MIPS_lo = arch->vex.guest_LO; |
| |
| #elif defined(VGP_mips64_linux) |
| # define DO(n) regs->MIPS_r##n = arch->vex.guest_r##n |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| # undef DO |
| regs->MIPS_hi = arch->vex.guest_HI; |
| regs->MIPS_lo = arch->vex.guest_LO; |
| #elif defined(VGP_tilegx_linux) |
| # define DO(n) regs->regs[n] = arch->vex.guest_r##n |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| DO(32); DO(33); DO(34); DO(35); DO(36); DO(37); DO(38); DO(39); |
| DO(40); DO(41); DO(42); DO(43); DO(44); DO(45); DO(46); DO(47); |
| DO(48); DO(49); DO(50); DO(51); DO(52); DO(53); DO(54); DO(55); |
| regs->pc = arch->vex.guest_pc; |
| regs->orig_r0 = arch->vex.guest_r0; |
| #else |
| # error Unknown ELF platform |
| #endif |
| } |
| |
| static void fill_fpu(const ThreadState *tst, vki_elf_fpregset_t *fpu) |
| { |
| __attribute__((unused)) |
| const ThreadArchState* arch = &tst->arch; |
| |
| #if defined(VGP_x86_linux) |
| //:: static void fill_fpu(vki_elf_fpregset_t *fpu, const HChar *from) |
| //:: { |
| //:: if (VG_(have_ssestate)) { |
| //:: UShort *to; |
| //:: Int i; |
| //:: |
| //:: /* This is what the kernel does */ |
| //:: VG_(memcpy)(fpu, from, 7*sizeof(long)); |
| //:: |
| //:: to = (UShort *)&fpu->st_space[0]; |
| //:: from += 18 * sizeof(UShort); |
| //:: |
| //:: for (i = 0; i < 8; i++, to += 5, from += 8) |
| //:: VG_(memcpy)(to, from, 5*sizeof(UShort)); |
| //:: } else |
| //:: VG_(memcpy)(fpu, from, sizeof(*fpu)); |
| //:: } |
| |
| //:: fill_fpu(fpu, (const HChar *)&arch->m_sse); |
| |
| #elif defined(VGP_amd64_linux) |
| //:: fpu->cwd = ?; |
| //:: fpu->swd = ?; |
| //:: fpu->twd = ?; |
| //:: fpu->fop = ?; |
| //:: fpu->rip = ?; |
| //:: fpu->rdp = ?; |
| //:: fpu->mxcsr = ?; |
| //:: fpu->mxcsr_mask = ?; |
| //:: fpu->st_space = ?; |
| |
| # define DO(n) VG_(memcpy)(fpu->xmm_space + n * 4, \ |
| &arch->vex.guest_YMM##n[0], 16) |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| # undef DO |
| |
| VG_(memset)(fpu->padding, 0, sizeof(fpu->padding)); |
| |
| #elif defined(VGP_ppc32_linux) |
| /* The guest state has the FPR fields declared as ULongs, so need |
| to fish out the values without converting them. |
| NOTE: The 32 FP registers map to the first 32 VSX registers.*/ |
| # define DO(n) (*fpu)[n] = *(double*)(&arch->vex.guest_VSR##n) |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| # undef DO |
| |
| #elif defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) |
| /* The guest state has the FPR fields declared as ULongs, so need |
| to fish out the values without converting them. |
| NOTE: The 32 FP registers map to the first 32 VSX registers.*/ |
| # define DO(n) (*fpu)[n] = *(double*)(&arch->vex.guest_VSR##n) |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| # undef DO |
| |
| #elif defined(VGP_arm_linux) || defined(VGP_tilegx_linux) |
| // umm ... |
| |
| #elif defined(VGP_arm64_linux) |
| I_die_here; |
| |
| #elif defined(VGP_s390x_linux) |
| # define DO(n) fpu->fprs[n].ui = arch->vex.guest_f##n |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| # undef DO |
| #elif defined(VGP_mips32_linux) |
| # define DO(n) (*fpu)[n] = *(double*)(&arch->vex.guest_f##n) |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| # undef DO |
| #elif defined(VGP_mips32_linux) || defined(VGP_mips64_linux) |
| # define DO(n) (*fpu)[n] = *(double*)(&arch->vex.guest_f##n) |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| DO(8); DO(9); DO(10); DO(11); DO(12); DO(13); DO(14); DO(15); |
| DO(16); DO(17); DO(18); DO(19); DO(20); DO(21); DO(22); DO(23); |
| DO(24); DO(25); DO(26); DO(27); DO(28); DO(29); DO(30); DO(31); |
| # undef DO |
| #else |
| # error Unknown ELF platform |
| #endif |
| } |
| |
| #if defined(VGP_x86_linux) && !defined(VGPV_x86_linux_android) |
| static void fill_xfpu(const ThreadState *tst, vki_elf_fpxregset_t *xfpu) |
| { |
| const ThreadArchState* arch = &tst->arch; |
| |
| //:: xfpu->cwd = ?; |
| //:: xfpu->swd = ?; |
| //:: xfpu->twd = ?; |
| //:: xfpu->fop = ?; |
| //:: xfpu->fip = ?; |
| //:: xfpu->fcs = ?; |
| //:: xfpu->foo = ?; |
| //:: xfpu->fos = ?; |
| //:: xfpu->mxcsr = ?; |
| xfpu->reserved = 0; |
| //:: xfpu->st_space = ?; |
| |
| # define DO(n) VG_(memcpy)(xfpu->xmm_space + n * 4, &arch->vex.guest_XMM##n, sizeof(arch->vex.guest_XMM##n)) |
| DO(0); DO(1); DO(2); DO(3); DO(4); DO(5); DO(6); DO(7); |
| # undef DO |
| |
| VG_(memset)(xfpu->padding, 0, sizeof(xfpu->padding)); |
| } |
| #endif |
| |
| static |
| void dump_one_thread(struct note **notelist, const vki_siginfo_t *si, ThreadId tid) |
| { |
| vki_elf_fpregset_t fpu; |
| struct vki_elf_prstatus prstatus; |
| # if defined(VGP_x86_linux) && !defined(VGPV_x86_linux_android) |
| { |
| vki_elf_fpxregset_t xfpu; |
| fill_xfpu(&VG_(threads)[tid], &xfpu); |
| add_note(notelist, "LINUX", NT_PRXFPREG, &xfpu, sizeof(xfpu)); |
| } |
| # endif |
| |
| fill_fpu(&VG_(threads)[tid], &fpu); |
| # if !defined(VGPV_arm_linux_android) \ |
| && !defined(VGPV_x86_linux_android) \ |
| && !defined(VGPV_mips32_linux_android) \ |
| && !defined(VGPV_arm64_linux_android) |
| add_note(notelist, "CORE", NT_FPREGSET, &fpu, sizeof(fpu)); |
| # endif |
| |
| fill_prstatus(&VG_(threads)[tid], &prstatus, si); |
| # if !defined(VGPV_arm_linux_android) \ |
| && !defined(VGPV_x86_linux_android) \ |
| && !defined(VGPV_mips32_linux_android) \ |
| && !defined(VGPV_arm64_linux_android) |
| add_note(notelist, "CORE", NT_PRSTATUS, &prstatus, sizeof(prstatus)); |
| # endif |
| } |
| |
| static |
| void make_elf_coredump(ThreadId tid, const vki_siginfo_t *si, ULong max_size) |
| { |
| HChar* buf = NULL; |
| const HChar *basename = "vgcore"; |
| const HChar *coreext = ""; |
| Int seq = 0; |
| Int core_fd; |
| NSegment const * seg; |
| ESZ(Ehdr) ehdr; |
| ESZ(Phdr) *phdrs; |
| Int num_phdrs; |
| Int i, idx; |
| UInt off; |
| struct note *notelist, *note; |
| UInt notesz; |
| struct vki_elf_prpsinfo prpsinfo; |
| Addr *seg_starts; |
| Int n_seg_starts; |
| |
| if (VG_(clo_log_fname_expanded) != NULL) { |
| coreext = ".core"; |
| basename = VG_(expand_file_name)("--log-file", |
| VG_(clo_log_fname_expanded)); |
| } |
| |
| vg_assert(coreext); |
| vg_assert(basename); |
| buf = VG_(malloc)( "coredump-elf.mec.1", |
| VG_(strlen)(coreext) + VG_(strlen)(basename) |
| + 100/*for the two %ds. */ ); |
| |
| for(;;) { |
| Int oflags = VKI_O_CREAT|VKI_O_WRONLY|VKI_O_EXCL|VKI_O_TRUNC; |
| SysRes sres; |
| |
| if (seq == 0) |
| VG_(sprintf)(buf, "%s%s.%d", |
| basename, coreext, VG_(getpid)()); |
| else |
| VG_(sprintf)(buf, "%s%s.%d.%d", |
| basename, coreext, VG_(getpid)(), seq); |
| seq++; |
| |
| # if defined(VKI_O_LARGEFILE) |
| oflags |= VKI_O_LARGEFILE; |
| # endif |
| |
| sres = VG_(open)(buf, oflags, VKI_S_IRUSR|VKI_S_IWUSR); |
| if (!sr_isError(sres)) { |
| core_fd = sr_Res(sres); |
| break; |
| } |
| |
| if (sr_isError(sres) && sr_Err(sres) != VKI_EEXIST) |
| return; /* can't create file */ |
| } |
| |
| /* Get the client segments */ |
| seg_starts = VG_(get_segment_starts)(SkFileC | SkAnonC | SkShmC, |
| &n_seg_starts); |
| |
| /* First, count how many memory segments to dump */ |
| num_phdrs = 1; /* start with notes */ |
| for(i = 0; i < n_seg_starts; i++) { |
| if (!may_dump(VG_(am_find_nsegment(seg_starts[i])))) |
| continue; |
| |
| num_phdrs++; |
| } |
| |
| fill_ehdr(&ehdr, num_phdrs); |
| |
| notelist = NULL; |
| |
| /* Second, work out their layout */ |
| phdrs = VG_(malloc)("coredump-elf.mec.1", sizeof(*phdrs) * num_phdrs); |
| |
| /* Add details for all threads except the one that faulted */ |
| for(i = 1; i < VG_N_THREADS; i++) { |
| |
| if (VG_(threads)[i].status == VgTs_Empty) |
| continue; |
| |
| if (i == tid) |
| continue; |
| |
| dump_one_thread(¬elist, si, i); |
| } |
| |
| /* Add details for the faulting thread. Note that because we are |
| adding to the head of a linked list this thread will actually |
| come out first in the core file, which seems to be how |
| debuggers determine that it is the faulting thread. */ |
| dump_one_thread(¬elist, si, tid); |
| |
| fill_prpsinfo(&VG_(threads)[tid], &prpsinfo); |
| # if !defined(VGPV_arm_linux_android) \ |
| && !defined(VGPV_x86_linux_android) \ |
| && !defined(VGPV_mips32_linux_android) \ |
| && !defined(VGPV_arm64_linux_android) |
| add_note(¬elist, "CORE", NT_PRPSINFO, &prpsinfo, sizeof(prpsinfo)); |
| # endif |
| |
| for (note = notelist, notesz = 0; note != NULL; note = note->next) |
| notesz += note_size(note); |
| |
| off = sizeof(ehdr) + sizeof(*phdrs) * num_phdrs; |
| |
| phdrs[0].p_type = PT_NOTE; |
| phdrs[0].p_offset = off; |
| phdrs[0].p_vaddr = 0; |
| phdrs[0].p_paddr = 0; |
| phdrs[0].p_filesz = notesz; |
| phdrs[0].p_memsz = 0; |
| phdrs[0].p_flags = 0; |
| phdrs[0].p_align = 0; |
| |
| off += notesz; |
| |
| off = VG_PGROUNDUP(off); |
| |
| for(i = 0, idx = 1; i < n_seg_starts; i++) { |
| seg = VG_(am_find_nsegment(seg_starts[i])); |
| |
| if (!may_dump(seg)) |
| continue; |
| |
| fill_phdr(&phdrs[idx], seg, off, |
| (seg->end - seg->start + 1 + off) < max_size); |
| |
| off += phdrs[idx].p_filesz; |
| |
| idx++; |
| } |
| |
| /* write everything out */ |
| VG_(write)(core_fd, &ehdr, sizeof(ehdr)); |
| VG_(write)(core_fd, phdrs, sizeof(*phdrs) * num_phdrs); |
| |
| for(note = notelist; note != NULL; note = note->next) |
| write_note(core_fd, note); |
| |
| VG_(lseek)(core_fd, phdrs[1].p_offset, VKI_SEEK_SET); |
| |
| for(i = 0, idx = 1; i < n_seg_starts; i++) { |
| seg = VG_(am_find_nsegment(seg_starts[i])); |
| |
| if (!should_dump(seg)) |
| continue; |
| |
| if (phdrs[idx].p_filesz > 0) { |
| vg_assert(VG_(lseek)(core_fd, phdrs[idx].p_offset, VKI_SEEK_SET) |
| == phdrs[idx].p_offset); |
| vg_assert(seg->end - seg->start + 1 >= phdrs[idx].p_filesz); |
| |
| (void)VG_(write)(core_fd, (void *)seg->start, phdrs[idx].p_filesz); |
| } |
| idx++; |
| } |
| |
| VG_(free)(seg_starts); |
| |
| VG_(close)(core_fd); |
| } |
| |
| void VG_(make_coredump)(ThreadId tid, const vki_siginfo_t *si, ULong max_size) |
| { |
| make_elf_coredump(tid, si, max_size); |
| } |
| |
| #endif // defined(VGO_linux) |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |