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eh_elf: actually use eh_elf in unw_step

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Théophile Bastian 2018-06-04 17:03:51 +02:00
parent e0efd00acd
commit 7a3518d325
1 changed files with 11 additions and 0 deletions
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11
src/x86_64/Gstep.c
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@ -26,6 +26,7 @@ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include "unwind_i.h" #include "unwind_i.h"
#include "../eh_elf/eh_elf.h"
#include <signal.h> #include <signal.h>
/* Recognise PLT entries such as: /* Recognise PLT entries such as:
@ -66,6 +67,16 @@ unw_step (unw_cursor_t *cursor)
Debug (1, "(cursor=%p, ip=0x%016lx, cfa=0x%016lx)\n", Debug (1, "(cursor=%p, ip=0x%016lx, cfa=0x%016lx)\n",
c, c->dwarf.ip, c->dwarf.cfa); c, c->dwarf.ip, c->dwarf.cfa);
// Try eh_elf based unwinding...
ret = eh_elf_step_cursor(&c);
if(ret < 0) {
Debug(2, "eh_elf unwinding failed (%d), falling back\n", ret);
}
else {
return ret;
}
/* Try DWARF-based unwinding... */ /* Try DWARF-based unwinding... */
c->sigcontext_format = X86_64_SCF_NONE; c->sigcontext_format = X86_64_SCF_NONE;
ret = dwarf_step (&c->dwarf); ret = dwarf_step (&c->dwarf);