Attachment 926483 Details for Bug 1129756 – Reproducer

Reproducer

simplestack.c (text/x-csrc), 2.50 KB, created by Martin Milata on 2014-08-13 15:22:35 UTC

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Description:

Filename:

MIME Type:

Creator: Martin Milata

Created: 2014-08-13 15:22:35 UTC

Size: 2.50 KB

patch

obsolete

>#include <elf.h>
>#include <gelf.h>
>#include <elfutils/libdwfl.h>
>
>#include <stdio.h>
>#include <assert.h>
>
>#include <sys/types.h>
>#include <sys/stat.h>
>#include <fcntl.h>
>#include <unistd.h>
>
>static int
>find_debuginfo_none (Dwfl_Module *mod, void **userdata, const char *modname,
>                     GElf_Addr base, const char *file_name,
>                     const char *debuglink_file, GElf_Word debuglink_crc,
>                     char **debuginfo_file_name)
>{
>    return -1;
>}
>
>static const Dwfl_Callbacks core_callbacks =
>{
>    .find_elf = dwfl_build_id_find_elf,
>    .find_debuginfo = find_debuginfo_none,
>    .debuginfo_path = NULL
>};
>
>static int
>frame_callback (Dwfl_Frame *state, void *arg)
>{
>    Dwarf_Addr pc;
>    bool isactivation;
>    if (!dwfl_frame_pc(state, &pc, &isactivation))
>    {
>        printf("Failed to get PC\n");
>        return -1;
>    }
>    printf("%llx\n", (long long)pc);
>
>    return DWARF_CB_OK;
>}
>
>static int
>thread_callback (Dwfl_Thread *thread, void *thread_arg)
>{
>    switch (dwfl_thread_getframes (thread, frame_callback, NULL))
>    {
>        case DWARF_CB_OK:
>            printf("dwfl_thread_getframes: DWARF_CB_OK\n");
>            break;
>        case DWARF_CB_ABORT:
>            printf("dwfl_thread_getframes: DWARF_CB_ABORT\n");
>            break;
>        case -1:
>            printf("dwfl_thread_getframes: -1 (%s)\n", dwfl_errmsg(-1));
>            break;
>        default:
>            printf("dwfl_thread_getframes: ???\n");
>            break;
>    }
>
>    return DWARF_CB_OK;
>}
>
>int main(int argc, char *argv[])
>{
>    char *exec = argv[1];
>    char *core = argv[2];
>
>    int core_fd = open(core, O_RDONLY);
>    assert(core_fd >= 0);
>    elf_version (EV_CURRENT);
>
>    Elf *ecore = elf_begin(core_fd, ELF_C_READ, NULL);
>    assert(ecore);
>
>    Dwfl *dwfl = dwfl_begin (&core_callbacks);
>    assert(dwfl);
>
>    assert(dwfl_core_file_report(dwfl, ecore, exec) >= 0);
>    assert(dwfl_report_end(dwfl, NULL, NULL) == 0);
>    assert(dwfl_core_file_attach(dwfl, ecore) >= 0);
>    assert(dwfl_pid(dwfl) >= 0);
>
>    switch (dwfl_getthreads (dwfl, thread_callback, NULL))
>    {
>        case DWARF_CB_OK:
>            printf("dwfl_getthreads: DWARF_CB_OK\n");
>            break;
>        case DWARF_CB_ABORT:
>            printf("dwfl_getthreads: DWARF_CB_ABORT\n");
>            break;
>        case -1:
>            printf("dwfl_getthreads: -1\n");
>            break;
>        default:
>            printf("dwfl_getthreads: ???\n");
>            break;
>    }
>
>    dwfl_end(dwfl);
>    elf_end(ecore);
>    close(core_fd);
>
>    return 0;
>}

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Attachments on bug 1129756: 926483