| Index: breakpad/linux/minidump-2-core.cc
|
| ===================================================================
|
| --- breakpad/linux/minidump-2-core.cc (revision 32601)
|
| +++ breakpad/linux/minidump-2-core.cc (working copy)
|
| @@ -1,603 +0,0 @@
|
| -// Copyright (c) 2009, Google Inc.
|
| -// All rights reserved.
|
| -//
|
| -// Redistribution and use in source and binary forms, with or without
|
| -// modification, are permitted provided that the following conditions are
|
| -// met:
|
| -//
|
| -// * Redistributions of source code must retain the above copyright
|
| -// notice, this list of conditions and the following disclaimer.
|
| -// * Redistributions in binary form must reproduce the above
|
| -// copyright notice, this list of conditions and the following disclaimer
|
| -// in the documentation and/or other materials provided with the
|
| -// distribution.
|
| -// * Neither the name of Google Inc. nor the names of its
|
| -// contributors may be used to endorse or promote products derived from
|
| -// this software without specific prior written permission.
|
| -//
|
| -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
| -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
| -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
| -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
| -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
| -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
| -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
| -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
| -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
| -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
| -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
| -
|
| -// Converts a minidump file to a core file which gdb can read.
|
| -// Large parts lifted from the userspace core dumper:
|
| -// http://code.google.com/p/google-coredumper/
|
| -//
|
| -// Usage: minidump-2-core 1234.dmp > core
|
| -
|
| -#include <vector>
|
| -
|
| -#include <stdio.h>
|
| -#include <string.h>
|
| -
|
| -#include <elf.h>
|
| -#include <errno.h>
|
| -#include <unistd.h>
|
| -#include <fcntl.h>
|
| -#include <sys/user.h>
|
| -#include <sys/mman.h>
|
| -
|
| -#include "google_breakpad/common/minidump_format.h"
|
| -#include "google_breakpad/common/minidump_cpu_x86.h"
|
| -#include "breakpad/linux/linux_syscall_support.h"
|
| -#include "breakpad/linux/minidump_format_linux.h"
|
| -
|
| -#if __WORDSIZE == 64
|
| - #define ELF_CLASS ELFCLASS64
|
| - #define Ehdr Elf64_Ehdr
|
| - #define Phdr Elf64_Phdr
|
| - #define Shdr Elf64_Shdr
|
| - #define Nhdr Elf64_Nhdr
|
| - #define auxv_t Elf64_auxv_t
|
| -#else
|
| - #define ELF_CLASS ELFCLASS32
|
| - #define Ehdr Elf32_Ehdr
|
| - #define Phdr Elf32_Phdr
|
| - #define Shdr Elf32_Shdr
|
| - #define Nhdr Elf32_Nhdr
|
| - #define auxv_t Elf32_auxv_t
|
| -#endif
|
| -
|
| -
|
| -#if defined(__x86_64__)
|
| - #define ELF_ARCH EM_X86_64
|
| -#elif defined(__i386__)
|
| - #define ELF_ARCH EM_386
|
| -#elif defined(__ARM_ARCH_3__)
|
| - #define ELF_ARCH EM_ARM
|
| -#elif defined(__mips__)
|
| - #define ELF_ARCH EM_MIPS
|
| -#endif
|
| -
|
| -static int usage(const char* argv0) {
|
| - fprintf(stderr, "Usage: %s <minidump file>\n", argv0);
|
| - return 1;
|
| -}
|
| -
|
| -// Write all of the given buffer, handling short writes and EINTR. Return true
|
| -// iff successful.
|
| -static bool
|
| -writea(int fd, const void* idata, size_t length) {
|
| - const uint8_t* data = (const uint8_t*) idata;
|
| -
|
| - size_t done = 0;
|
| - while (done < length) {
|
| - ssize_t r;
|
| - do {
|
| - r = write(fd, data + done, length - done);
|
| - } while (r == -1 && errno == EINTR);
|
| -
|
| - if (r < 1)
|
| - return false;
|
| - done += r;
|
| - }
|
| -
|
| - return true;
|
| -}
|
| -
|
| -// A range of a mmaped file.
|
| -class MMappedRange {
|
| - public:
|
| - MMappedRange(const void* data, size_t length)
|
| - : data_(reinterpret_cast<const uint8_t*>(data)),
|
| - length_(length) {
|
| - }
|
| -
|
| - // Get an object of |length| bytes at |offset| and return a pointer to it
|
| - // unless it's out of bounds.
|
| - const void* GetObject(size_t offset, size_t length) {
|
| - if (offset + length < offset)
|
| - return NULL;
|
| - if (offset + length > length_)
|
| - return NULL;
|
| - return data_ + offset;
|
| - }
|
| -
|
| - // Get element |index| of an array of objects of length |length| starting at
|
| - // |offset| bytes. Return NULL if out of bounds.
|
| - const void* GetArrayElement(size_t offset, size_t length, unsigned index) {
|
| - const size_t element_offset = offset + index * length;
|
| - return GetObject(element_offset, length);
|
| - }
|
| -
|
| - // Return a new range which is a subset of this range.
|
| - MMappedRange Subrange(const MDLocationDescriptor& location) const {
|
| - if (location.rva > length_ ||
|
| - location.rva + location.data_size < location.rva ||
|
| - location.rva + location.data_size > length_) {
|
| - return MMappedRange(NULL, 0);
|
| - }
|
| -
|
| - return MMappedRange(data_ + location.rva, location.data_size);
|
| - }
|
| -
|
| - const uint8_t* data() const { return data_; }
|
| - size_t length() const { return length_; }
|
| -
|
| - private:
|
| - const uint8_t* const data_;
|
| - const size_t length_;
|
| -};
|
| -
|
| -/* Dynamically determines the byte sex of the system. Returns non-zero
|
| - * for big-endian machines.
|
| - */
|
| -static inline int sex() {
|
| - int probe = 1;
|
| - return !*(char *)&probe;
|
| -}
|
| -
|
| -typedef struct elf_timeval { /* Time value with microsecond resolution */
|
| - long tv_sec; /* Seconds */
|
| - long tv_usec; /* Microseconds */
|
| -} elf_timeval;
|
| -
|
| -typedef struct elf_siginfo { /* Information about signal (unused) */
|
| - int32_t si_signo; /* Signal number */
|
| - int32_t si_code; /* Extra code */
|
| - int32_t si_errno; /* Errno */
|
| -} elf_siginfo;
|
| -
|
| -typedef struct prstatus { /* Information about thread; includes CPU reg*/
|
| - elf_siginfo pr_info; /* Info associated with signal */
|
| - uint16_t pr_cursig; /* Current signal */
|
| - unsigned long pr_sigpend; /* Set of pending signals */
|
| - unsigned long pr_sighold; /* Set of held signals */
|
| - pid_t pr_pid; /* Process ID */
|
| - pid_t pr_ppid; /* Parent's process ID */
|
| - pid_t pr_pgrp; /* Group ID */
|
| - pid_t pr_sid; /* Session ID */
|
| - elf_timeval pr_utime; /* User time */
|
| - elf_timeval pr_stime; /* System time */
|
| - elf_timeval pr_cutime; /* Cumulative user time */
|
| - elf_timeval pr_cstime; /* Cumulative system time */
|
| - user_regs_struct pr_reg; /* CPU registers */
|
| - uint32_t pr_fpvalid; /* True if math co-processor being used */
|
| -} prstatus;
|
| -
|
| -typedef struct prpsinfo { /* Information about process */
|
| - unsigned char pr_state; /* Numeric process state */
|
| - char pr_sname; /* Char for pr_state */
|
| - unsigned char pr_zomb; /* Zombie */
|
| - signed char pr_nice; /* Nice val */
|
| - unsigned long pr_flag; /* Flags */
|
| -#if defined(__x86_64__) || defined(__mips__)
|
| - uint32_t pr_uid; /* User ID */
|
| - uint32_t pr_gid; /* Group ID */
|
| -#else
|
| - uint16_t pr_uid; /* User ID */
|
| - uint16_t pr_gid; /* Group ID */
|
| -#endif
|
| - pid_t pr_pid; /* Process ID */
|
| - pid_t pr_ppid; /* Parent's process ID */
|
| - pid_t pr_pgrp; /* Group ID */
|
| - pid_t pr_sid; /* Session ID */
|
| - char pr_fname[16]; /* Filename of executable */
|
| - char pr_psargs[80]; /* Initial part of arg list */
|
| -} prpsinfo;
|
| -
|
| -// We parse the minidump file and keep the parsed information in this structure.
|
| -struct CrashedProcess {
|
| - CrashedProcess()
|
| - : crashing_tid(-1),
|
| - auxv(NULL),
|
| - auxv_length(0) {
|
| - memset(&prps, 0, sizeof(prps));
|
| - prps.pr_sname = 'R';
|
| - }
|
| -
|
| - struct Mapping {
|
| - uint64_t start_address, end_address;
|
| - };
|
| - std::vector<Mapping> mappings;
|
| -
|
| - pid_t crashing_tid;
|
| - int fatal_signal;
|
| -
|
| - struct Thread {
|
| - pid_t tid;
|
| - user_regs_struct regs;
|
| - user_fpregs_struct fpregs;
|
| - user_fpxregs_struct fpxregs;
|
| - uintptr_t stack_addr;
|
| - const uint8_t* stack;
|
| - size_t stack_length;
|
| - };
|
| - std::vector<Thread> threads;
|
| -
|
| - const uint8_t* auxv;
|
| - size_t auxv_length;
|
| -
|
| - prpsinfo prps;
|
| -};
|
| -
|
| -static uint32_t
|
| -U32(const uint8_t* data) {
|
| - uint32_t v;
|
| - memcpy(&v, data, sizeof(v));
|
| - return v;
|
| -}
|
| -
|
| -static uint16_t
|
| -U16(const uint8_t* data) {
|
| - uint16_t v;
|
| - memcpy(&v, data, sizeof(v));
|
| - return v;
|
| -}
|
| -
|
| -#if defined(__i386__)
|
| -static void
|
| -ParseThreadRegisters(CrashedProcess::Thread* thread, MMappedRange range) {
|
| - const MDRawContextX86* rawregs =
|
| - (const MDRawContextX86*) range.GetObject(0, sizeof(MDRawContextX86));
|
| -
|
| - thread->regs.ebx = rawregs->ebx;
|
| - thread->regs.ecx = rawregs->ecx;
|
| - thread->regs.edx = rawregs->edx;
|
| - thread->regs.esi = rawregs->esi;
|
| - thread->regs.edi = rawregs->edi;
|
| - thread->regs.ebp = rawregs->ebp;
|
| - thread->regs.eax = rawregs->eax;
|
| - thread->regs.xds = rawregs->ds;
|
| - thread->regs.xes = rawregs->es;
|
| - thread->regs.xfs = rawregs->fs;
|
| - thread->regs.xgs = rawregs->gs;
|
| - thread->regs.orig_eax = rawregs->eax;
|
| - thread->regs.eip = rawregs->eip;
|
| - thread->regs.xcs = rawregs->cs;
|
| - thread->regs.eflags = rawregs->eflags;
|
| - thread->regs.esp = rawregs->esp;
|
| - thread->regs.xss = rawregs->ss;
|
| -
|
| - thread->fpregs.cwd = rawregs->float_save.control_word;
|
| - thread->fpregs.swd = rawregs->float_save.status_word;
|
| - thread->fpregs.twd = rawregs->float_save.tag_word;
|
| - thread->fpregs.fip = rawregs->float_save.error_offset;
|
| - thread->fpregs.fcs = rawregs->float_save.error_selector;
|
| - thread->fpregs.foo = rawregs->float_save.data_offset;
|
| - thread->fpregs.fos = rawregs->float_save.data_selector;
|
| - memcpy(thread->fpregs.st_space, rawregs->float_save.register_area,
|
| - 10 * 8);
|
| -
|
| - thread->fpxregs.cwd = rawregs->float_save.control_word;
|
| - thread->fpxregs.swd = rawregs->float_save.status_word;
|
| - thread->fpxregs.twd = rawregs->float_save.tag_word;
|
| - thread->fpxregs.fop = U16(rawregs->extended_registers + 6);
|
| - thread->fpxregs.fip = U16(rawregs->extended_registers + 8);
|
| - thread->fpxregs.fcs = U16(rawregs->extended_registers + 12);
|
| - thread->fpxregs.foo = U16(rawregs->extended_registers + 16);
|
| - thread->fpxregs.fos = U16(rawregs->extended_registers + 20);
|
| - thread->fpxregs.mxcsr = U32(rawregs->extended_registers + 24);
|
| - memcpy(thread->fpxregs.st_space, rawregs->extended_registers + 32, 128);
|
| - memcpy(thread->fpxregs.xmm_space, rawregs->extended_registers + 160, 128);
|
| -}
|
| -#else
|
| -#error "This code has not been ported to your platform yet"
|
| -#endif
|
| -
|
| -static void
|
| -ParseThreadList(CrashedProcess* crashinfo, MMappedRange range,
|
| - const MMappedRange& full_file) {
|
| - const uint32_t num_threads =
|
| - *(const uint32_t*) range.GetObject(0, sizeof(uint32_t));
|
| - for (unsigned i = 0; i < num_threads; ++i) {
|
| - CrashedProcess::Thread thread;
|
| - memset(&thread, 0, sizeof(thread));
|
| - const MDRawThread* rawthread =
|
| - (MDRawThread*) range.GetArrayElement(sizeof(uint32_t),
|
| - sizeof(MDRawThread), i);
|
| - thread.tid = rawthread->thread_id;
|
| - thread.stack_addr = rawthread->stack.start_of_memory_range;
|
| - MMappedRange stack_range = full_file.Subrange(rawthread->stack.memory);
|
| - thread.stack = stack_range.data();
|
| - thread.stack_length = rawthread->stack.memory.data_size;
|
| -
|
| - ParseThreadRegisters(&thread,
|
| - full_file.Subrange(rawthread->thread_context));
|
| -
|
| - crashinfo->threads.push_back(thread);
|
| - }
|
| -}
|
| -
|
| -static void
|
| -ParseAuxVector(CrashedProcess* crashinfo, MMappedRange range) {
|
| - crashinfo->auxv = range.data();
|
| - crashinfo->auxv_length = range.length();
|
| -}
|
| -
|
| -static void
|
| -ParseCmdLine(CrashedProcess* crashinfo, MMappedRange range) {
|
| - const char* cmdline = (const char*) range.data();
|
| - for (size_t i = 0; i < range.length(); ++i) {
|
| - if (cmdline[i] == 0) {
|
| - static const size_t fname_len = sizeof(crashinfo->prps.pr_fname) - 1;
|
| - static const size_t args_len = sizeof(crashinfo->prps.pr_psargs) - 1;
|
| - memset(crashinfo->prps.pr_fname, 0, fname_len + 1);
|
| - memset(crashinfo->prps.pr_psargs, 0, args_len + 1);
|
| - const char* binary_name = strrchr(cmdline, '/');
|
| - if (binary_name) {
|
| - binary_name++;
|
| - const unsigned len = strlen(binary_name);
|
| - memcpy(crashinfo->prps.pr_fname, binary_name,
|
| - len > fname_len ? fname_len : len);
|
| - } else {
|
| - memcpy(crashinfo->prps.pr_fname, cmdline,
|
| - i > fname_len ? fname_len : i);
|
| - }
|
| -
|
| - const unsigned len = range.length() > args_len ?
|
| - args_len : range.length();
|
| - memcpy(crashinfo->prps.pr_psargs, cmdline, len);
|
| - for (unsigned i = 0; i < len; ++i) {
|
| - if (crashinfo->prps.pr_psargs[i] == 0)
|
| - crashinfo->prps.pr_psargs[i] = ' ';
|
| - }
|
| - }
|
| - }
|
| -}
|
| -
|
| -static void
|
| -ParseExceptionStream(CrashedProcess* crashinfo, MMappedRange range) {
|
| - const MDRawExceptionStream* exp =
|
| - (MDRawExceptionStream*) range.GetObject(0, sizeof(MDRawExceptionStream));
|
| - crashinfo->crashing_tid = exp->thread_id;
|
| - crashinfo->fatal_signal = (int) exp->exception_record.exception_code;
|
| -}
|
| -
|
| -static bool
|
| -WriteThread(const CrashedProcess::Thread& thread, int fatal_signal) {
|
| - struct prstatus pr;
|
| - memset(&pr, 0, sizeof(pr));
|
| -
|
| - pr.pr_info.si_signo = fatal_signal;
|
| - pr.pr_cursig = fatal_signal;
|
| - pr.pr_pid = thread.tid;
|
| - memcpy(&pr.pr_reg, &thread.regs, sizeof(user_regs_struct));
|
| -
|
| - Nhdr nhdr;
|
| - memset(&nhdr, 0, sizeof(nhdr));
|
| - nhdr.n_namesz = 5;
|
| - nhdr.n_descsz = sizeof(struct prstatus);
|
| - nhdr.n_type = NT_PRSTATUS;
|
| - if (!writea(1, &nhdr, sizeof(nhdr)) ||
|
| - !writea(1, "CORE\0\0\0\0", 8) ||
|
| - !writea(1, &pr, sizeof(struct prstatus))) {
|
| - return false;
|
| - }
|
| -
|
| - nhdr.n_descsz = sizeof(user_fpregs_struct);
|
| - nhdr.n_type = NT_FPREGSET;
|
| - if (!writea(1, &nhdr, sizeof(nhdr)) ||
|
| - !writea(1, "CORE\0\0\0\0", 8) ||
|
| - !writea(1, &thread.fpregs, sizeof(user_fpregs_struct))) {
|
| - return false;
|
| - }
|
| -
|
| - nhdr.n_descsz = sizeof(user_fpxregs_struct);
|
| - nhdr.n_type = NT_PRXFPREG;
|
| - if (!writea(1, &nhdr, sizeof(nhdr)) ||
|
| - !writea(1, "LINUX\0\0\0", 8) ||
|
| - !writea(1, &thread.fpxregs, sizeof(user_fpxregs_struct))) {
|
| - return false;
|
| - }
|
| -
|
| - return true;
|
| -}
|
| -
|
| -static void
|
| -ParseModuleStream(CrashedProcess* crashinfo, MMappedRange range) {
|
| - const uint32_t num_mappings =
|
| - *(const uint32_t*) range.GetObject(0, sizeof(uint32_t));
|
| - for (unsigned i = 0; i < num_mappings; ++i) {
|
| - CrashedProcess::Mapping mapping;
|
| - const MDRawModule* rawmodule =
|
| - (MDRawModule*) range.GetArrayElement(sizeof(uint32_t),
|
| - MD_MODULE_SIZE, i);
|
| - mapping.start_address = rawmodule->base_of_image;
|
| - mapping.end_address = rawmodule->size_of_image + rawmodule->base_of_image;
|
| -
|
| - crashinfo->mappings.push_back(mapping);
|
| - }
|
| -}
|
| -
|
| -int
|
| -main(int argc, char** argv) {
|
| - if (argc != 2)
|
| - return usage(argv[0]);
|
| -
|
| - const int fd = open(argv[1], O_RDONLY);
|
| - if (fd < 0)
|
| - return usage(argv[0]);
|
| -
|
| - struct stat st;
|
| - fstat(fd, &st);
|
| -
|
| - const void* bytes = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
|
| - close(fd);
|
| - if (bytes == MAP_FAILED) {
|
| - perror("Failed to mmap dump file");
|
| - return 1;
|
| - }
|
| -
|
| - MMappedRange dump(bytes, st.st_size);
|
| -
|
| - const MDRawHeader* header =
|
| - (const MDRawHeader*) dump.GetObject(0, sizeof(MDRawHeader));
|
| -
|
| - CrashedProcess crashinfo;
|
| -
|
| - for (unsigned i = 0; i < header->stream_count; ++i) {
|
| - const MDRawDirectory* dirent =
|
| - (const MDRawDirectory*) dump.GetArrayElement(
|
| - header->stream_directory_rva, sizeof(MDRawDirectory), i);
|
| - switch (dirent->stream_type) {
|
| - case MD_THREAD_LIST_STREAM:
|
| - ParseThreadList(&crashinfo, dump.Subrange(dirent->location), dump);
|
| - break;
|
| - case MD_LINUX_AUXV:
|
| - ParseAuxVector(&crashinfo, dump.Subrange(dirent->location));
|
| - break;
|
| - case MD_LINUX_CMD_LINE:
|
| - ParseCmdLine(&crashinfo, dump.Subrange(dirent->location));
|
| - break;
|
| - case MD_EXCEPTION_STREAM:
|
| - ParseExceptionStream(&crashinfo, dump.Subrange(dirent->location));
|
| - break;
|
| - case MD_MODULE_LIST_STREAM:
|
| - ParseModuleStream(&crashinfo, dump.Subrange(dirent->location));
|
| - default:
|
| - fprintf(stderr, "Skipping %x\n", dirent->stream_type);
|
| - }
|
| - }
|
| -
|
| - // Write the ELF header. The file will look like:
|
| - // ELF header
|
| - // Phdr for the PT_NOTE
|
| - // Phdr for each of the thread stacks
|
| - // PT_NOTE
|
| - // each of the thread stacks
|
| - Ehdr ehdr;
|
| - memset(&ehdr, 0, sizeof(Ehdr));
|
| - ehdr.e_ident[0] = ELFMAG0;
|
| - ehdr.e_ident[1] = ELFMAG1;
|
| - ehdr.e_ident[2] = ELFMAG2;
|
| - ehdr.e_ident[3] = ELFMAG3;
|
| - ehdr.e_ident[4] = ELF_CLASS;
|
| - ehdr.e_ident[5] = sex() ? ELFDATA2MSB : ELFDATA2LSB;
|
| - ehdr.e_ident[6] = EV_CURRENT;
|
| - ehdr.e_type = ET_CORE;
|
| - ehdr.e_machine = ELF_ARCH;
|
| - ehdr.e_version = EV_CURRENT;
|
| - ehdr.e_phoff = sizeof(Ehdr);
|
| - ehdr.e_ehsize = sizeof(Ehdr);
|
| - ehdr.e_phentsize= sizeof(Phdr);
|
| - ehdr.e_phnum = 1 + crashinfo.threads.size() + crashinfo.mappings.size();
|
| - ehdr.e_shentsize= sizeof(Shdr);
|
| - if (!writea(1, &ehdr, sizeof(Ehdr)))
|
| - return 1;
|
| -
|
| - size_t offset = sizeof(Ehdr) +
|
| - (1 + crashinfo.threads.size() +
|
| - crashinfo.mappings.size()) * sizeof(Phdr);
|
| - size_t filesz = sizeof(Nhdr) + 8 + sizeof(prpsinfo) +
|
| - // sizeof(Nhdr) + 8 + sizeof(user) +
|
| - sizeof(Nhdr) + 8 + crashinfo.auxv_length +
|
| - crashinfo.threads.size() * (
|
| - (sizeof(Nhdr) + 8 + sizeof(prstatus)) +
|
| - sizeof(Nhdr) + 8 + sizeof(user_fpregs_struct) +
|
| - sizeof(Nhdr) + 8 + sizeof(user_fpxregs_struct));
|
| -
|
| - Phdr phdr;
|
| - memset(&phdr, 0, sizeof(Phdr));
|
| - phdr.p_type = PT_NOTE;
|
| - phdr.p_offset = offset;
|
| - phdr.p_filesz = filesz;
|
| - if (!writea(1, &phdr, sizeof(phdr)))
|
| - return 1;
|
| -
|
| - phdr.p_type = PT_LOAD;
|
| - phdr.p_align = getpagesize();
|
| - size_t note_align = phdr.p_align - ((offset+filesz) % phdr.p_align);
|
| - if (note_align == phdr.p_align)
|
| - note_align = 0;
|
| - offset += note_align;
|
| -
|
| - for (unsigned i = 0; i < crashinfo.threads.size(); ++i) {
|
| - const CrashedProcess::Thread& thread = crashinfo.threads[i];
|
| - offset += filesz;
|
| - filesz = thread.stack_length;
|
| - phdr.p_offset = offset;
|
| - phdr.p_vaddr = thread.stack_addr;
|
| - phdr.p_filesz = phdr.p_memsz = filesz;
|
| - phdr.p_flags = PF_R | PF_W;
|
| - if (!writea(1, &phdr, sizeof(phdr)))
|
| - return 1;
|
| - }
|
| -
|
| - for (unsigned i = 0; i < crashinfo.mappings.size(); ++i) {
|
| - const CrashedProcess::Mapping& mapping = crashinfo.mappings[i];
|
| - phdr.p_offset = 0;
|
| - phdr.p_vaddr = mapping.start_address;
|
| - phdr.p_filesz = 0;
|
| - phdr.p_flags = PF_R;
|
| - phdr.p_memsz = mapping.end_address - mapping.start_address;
|
| - if (!writea(1, &phdr, sizeof(phdr)))
|
| - return 1;
|
| - }
|
| -
|
| - Nhdr nhdr;
|
| - memset(&nhdr, 0, sizeof(nhdr));
|
| - nhdr.n_namesz = 5;
|
| - nhdr.n_descsz = sizeof(prpsinfo);
|
| - nhdr.n_type = NT_PRPSINFO;
|
| - if (!writea(1, &nhdr, sizeof(nhdr)) ||
|
| - !writea(1, "CORE\0\0\0\0", 8) ||
|
| - !writea(1, &crashinfo.prps, sizeof(prpsinfo))) {
|
| - return 1;
|
| - }
|
| -
|
| - nhdr.n_descsz = crashinfo.auxv_length;
|
| - nhdr.n_type = NT_AUXV;
|
| - if (!writea(1, &nhdr, sizeof(nhdr)) ||
|
| - !writea(1, "CORE\0\0\0\0", 8) ||
|
| - !writea(1, &crashinfo.auxv, crashinfo.auxv_length)) {
|
| - return 1;
|
| - }
|
| -
|
| - for (unsigned i = 0; i < crashinfo.threads.size(); ++i) {
|
| - if (crashinfo.threads[i].tid == crashinfo.crashing_tid) {
|
| - WriteThread(crashinfo.threads[i], crashinfo.fatal_signal);
|
| - break;
|
| - }
|
| - }
|
| -
|
| - for (unsigned i = 0; i < crashinfo.threads.size(); ++i) {
|
| - if (crashinfo.threads[i].tid != crashinfo.crashing_tid)
|
| - WriteThread(crashinfo.threads[i], 0);
|
| - }
|
| -
|
| - if (note_align) {
|
| - char scratch[note_align];
|
| - memset(scratch, 0, sizeof(scratch));
|
| - if (!writea(1, scratch, sizeof(scratch)))
|
| - return 1;
|
| - }
|
| -
|
| - for (unsigned i = 0; i < crashinfo.threads.size(); ++i) {
|
| - const CrashedProcess::Thread& thread = crashinfo.threads[i];
|
| - if (!writea(1, thread.stack, thread.stack_length))
|
| - return 1;
|
| - }
|
| -
|
| - munmap(const_cast<void*>(bytes), st.st_size);
|
| -
|
| - return 0;
|
| -}
|
|
|