diff options
Diffstat (limited to 'lib/tsan/rtl/tsan_symbolize_addr2line_linux.cc')
| -rw-r--r-- | lib/tsan/rtl/tsan_symbolize_addr2line_linux.cc | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/lib/tsan/rtl/tsan_symbolize_addr2line_linux.cc b/lib/tsan/rtl/tsan_symbolize_addr2line_linux.cc deleted file mode 100644 index b186d3b38ec9c..0000000000000 --- a/lib/tsan/rtl/tsan_symbolize_addr2line_linux.cc +++ /dev/null @@ -1,193 +0,0 @@ -//===-- tsan_symbolize_addr2line.cc ---------------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file is a part of ThreadSanitizer (TSan), a race detector. -// -//===----------------------------------------------------------------------===// -#include "sanitizer_common/sanitizer_common.h" -#include "sanitizer_common/sanitizer_libc.h" -#include "tsan_symbolize.h" -#include "tsan_mman.h" -#include "tsan_rtl.h" -#include "tsan_platform.h" - -#include <unistd.h> -#include <stdlib.h> -#include <stdio.h> -#include <errno.h> -#include <link.h> -#include <linux/limits.h> -#include <sys/types.h> - -namespace __tsan { - -struct ModuleDesc { - const char *fullname; - const char *name; - uptr base; - int inp_fd; - int out_fd; -}; - -struct SectionDesc { - SectionDesc *next; - ModuleDesc *module; - uptr base; - uptr end; -}; - -struct DlIteratePhdrCtx { - SectionDesc *sections; - bool is_first; -}; - -static void NOINLINE InitModule(ModuleDesc *m) { - int outfd[2] = {}; - if (pipe(&outfd[0])) { - Printf("ThreadSanitizer: outfd pipe() failed (%d)\n", errno); - Die(); - } - int infd[2] = {}; - if (pipe(&infd[0])) { - Printf("ThreadSanitizer: infd pipe() failed (%d)\n", errno); - Die(); - } - int pid = fork(); - if (pid == 0) { - internal_close(STDOUT_FILENO); - internal_close(STDIN_FILENO); - internal_dup2(outfd[0], STDIN_FILENO); - internal_dup2(infd[1], STDOUT_FILENO); - internal_close(outfd[0]); - internal_close(outfd[1]); - internal_close(infd[0]); - internal_close(infd[1]); - for (int fd = getdtablesize(); fd > 2; fd--) - internal_close(fd); - execl("/usr/bin/addr2line", "/usr/bin/addr2line", "-Cfe", m->fullname, 0); - _exit(0); - } else if (pid < 0) { - Printf("ThreadSanitizer: failed to fork symbolizer\n"); - Die(); - } - internal_close(outfd[0]); - internal_close(infd[1]); - m->inp_fd = infd[0]; - m->out_fd = outfd[1]; -} - -static int dl_iterate_phdr_cb(dl_phdr_info *info, size_t size, void *arg) { - DlIteratePhdrCtx *ctx = (DlIteratePhdrCtx*)arg; - InternalScopedBuffer<char> tmp(128); - if (ctx->is_first) { - internal_snprintf(tmp.data(), tmp.size(), "/proc/%d/exe", - (int)internal_getpid()); - info->dlpi_name = tmp.data(); - } - ctx->is_first = false; - if (info->dlpi_name == 0 || info->dlpi_name[0] == 0) - return 0; - ModuleDesc *m = (ModuleDesc*)internal_alloc(MBlockReportStack, - sizeof(ModuleDesc)); - m->fullname = internal_strdup(info->dlpi_name); - m->name = internal_strrchr(m->fullname, '/'); - if (m->name) - m->name += 1; - else - m->name = m->fullname; - m->base = (uptr)info->dlpi_addr; - m->inp_fd = -1; - m->out_fd = -1; - DPrintf2("Module %s %zx\n", m->name, m->base); - for (int i = 0; i < info->dlpi_phnum; i++) { - const Elf64_Phdr *s = &info->dlpi_phdr[i]; - DPrintf2(" Section p_type=%zx p_offset=%zx p_vaddr=%zx p_paddr=%zx" - " p_filesz=%zx p_memsz=%zx p_flags=%zx p_align=%zx\n", - (uptr)s->p_type, (uptr)s->p_offset, (uptr)s->p_vaddr, - (uptr)s->p_paddr, (uptr)s->p_filesz, (uptr)s->p_memsz, - (uptr)s->p_flags, (uptr)s->p_align); - if (s->p_type != PT_LOAD) - continue; - SectionDesc *sec = (SectionDesc*)internal_alloc(MBlockReportStack, - sizeof(SectionDesc)); - sec->module = m; - sec->base = info->dlpi_addr + s->p_vaddr; - sec->end = sec->base + s->p_memsz; - sec->next = ctx->sections; - ctx->sections = sec; - DPrintf2(" Section %zx-%zx\n", sec->base, sec->end); - } - return 0; -} - -static SectionDesc *InitSections() { - DlIteratePhdrCtx ctx = {0, true}; - dl_iterate_phdr(dl_iterate_phdr_cb, &ctx); - return ctx.sections; -} - -static SectionDesc *GetSectionDesc(uptr addr) { - static SectionDesc *sections = 0; - if (sections == 0) - sections = InitSections(); - for (SectionDesc *s = sections; s; s = s->next) { - if (addr >= s->base && addr < s->end) { - if (s->module->inp_fd == -1) - InitModule(s->module); - return s; - } - } - return 0; -} - -ReportStack *SymbolizeCodeAddr2Line(uptr addr) { - SectionDesc *s = GetSectionDesc(addr); - if (s == 0) - return NewReportStackEntry(addr); - ModuleDesc *m = s->module; - uptr offset = addr - m->base; - char addrstr[32]; - internal_snprintf(addrstr, sizeof(addrstr), "%p\n", (void*)offset); - if (0 >= internal_write(m->out_fd, addrstr, internal_strlen(addrstr))) { - Printf("ThreadSanitizer: can't write from symbolizer (%d, %d)\n", - m->out_fd, errno); - Die(); - } - InternalScopedBuffer<char> func(1024); - ssize_t len = internal_read(m->inp_fd, func.data(), func.size() - 1); - if (len <= 0) { - Printf("ThreadSanitizer: can't read from symbolizer (%d, %d)\n", - m->inp_fd, errno); - Die(); - } - func.data()[len] = 0; - ReportStack *res = NewReportStackEntry(addr); - res->module = internal_strdup(m->name); - res->offset = offset; - char *pos = (char*)internal_strchr(func.data(), '\n'); - if (pos && func[0] != '?') { - res->func = (char*)internal_alloc(MBlockReportStack, pos - func.data() + 1); - internal_memcpy(res->func, func.data(), pos - func.data()); - res->func[pos - func.data()] = 0; - char *pos2 = (char*)internal_strchr(pos, ':'); - if (pos2) { - res->file = (char*)internal_alloc(MBlockReportStack, pos2 - pos - 1 + 1); - internal_memcpy(res->file, pos + 1, pos2 - pos - 1); - res->file[pos2 - pos - 1] = 0; - res->line = atoi(pos2 + 1); - } - } - return res; -} - -ReportStack *SymbolizeDataAddr2Line(uptr addr) { - return 0; -} - -} // namespace __tsan |