m2-internship/libunwind-eh_elf
1
0
Fork 0
mirror of https://github.com/tobast/libunwind-eh_elf.git synced 2025-01-06 01:23:41 +01:00
Code Issues Releases Activity

Searching of proc fde is moved to separate function

Browse source
This commit is contained in:
Alexander Esilevich 2010-07-30 05:14:15 +07:00
parent ecbd61b631
commit 15319ec864
1 changed files with 50 additions and 27 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

77
src/dwarf/Gfind_proc_info-lsb.c
View file

@ -47,6 +47,9 @@ struct table_entry
#include "os-linux.h"
#endif
#ifdef HAVE_DL_ITERATE_PHDR
struct callback_data
{
/* in: */
@ -82,18 +85,6 @@ linear_search (unw_addr_space_t as, unw_word_t ip,
*fde_addr = faddr;
return 0;
}
// if (!need_unwind_info)
// {
// }
//
// addr = faddr;
// if ((ret = dwarf_extract_proc_info_from_fde (as, a, &addr, pi,
// need_unwind_info, 0,
// arg))
// < 0)
// return ret;
// return 1;
}
return -UNW_ENOINFO;
}
@ -731,16 +722,13 @@ callback (struct dl_phdr_info *info, size_t size, void *ptr)
}
}
HIDDEN int
dwarf_find_proc_info (unw_addr_space_t as, unw_word_t ip,
unw_proc_info_t *pi, int need_unwind_info, void *arg)
{
static int
find_proc_fde (unw_word_t ip, unw_word_t *fde_addr,
unw_word_t *gp, unw_word_t *fde_base,
unw_word_t *ip_offset, void *arg) {
struct callback_data cb_data;
intrmask_t saved_mask;
int ret;
unw_accessors_t *a;
Debug (14, "looking for IP=0x%lx\n", (long) ip);
memset (&cb_data, 0, sizeof (cb_data));
cb_data.ip = ip;
@ -750,24 +738,59 @@ dwarf_find_proc_info (unw_addr_space_t as, unw_word_t ip,
ret = dl_iterate_phdr (callback, &cb_data);
sigprocmask (SIG_SETMASK, &saved_mask, NULL);
if (ret <= 0)
if (ret == 0)
{
Debug (14, "IP=0x%lx not found\n", (long) ip);
return -UNW_ENOINFO;
ret = -UNW_ENOINFO;
return ret;
}
pi->gp = cb_data.gp;
*fde_addr = cb_data.fde_addr;
*gp = cb_data.gp;
*fde_base = cb_data.fde_base;
*ip_offset = cb_data.ip_offset;
}
#else // HAVE_DL_ITERATE_PHDR
static int
find_proc_fde(unw_word_t ip, unw_word_t *fde_addr, boid *arg) {
return -1;
}
#endif // HAVE_DL_ITERATE_PHDR
HIDDEN int
dwarf_find_proc_info (unw_addr_space_t as, unw_word_t ip,
unw_proc_info_t *pi, int need_unwind_info, void *arg)
{
int ret;
unw_word_t fde_addr;
unw_word_t gp;
unw_word_t fde_base;
unw_word_t ip_offset;
unw_accessors_t *a;
Debug (14, "looking for IP=0x%lx\n", (long) ip);
ret = find_proc_fde (ip, &fde_addr, &gp, &fde_base, &ip_offset, arg);
if (ret < 0)
{
Debug (14, "IP=0x%lx not found\n", (long) ip);
return ret;
}
pi->gp = gp;
a = unw_get_accessors (unw_local_addr_space);
ret = dwarf_extract_proc_info_from_fde (as, a, &cb_data.fde_addr, pi,
ret = dwarf_extract_proc_info_from_fde (as, a, &fde_addr, pi,
need_unwind_info,
cb_data.fde_base,
fde_base,
arg);
if (ret < 0)
return ret;
pi->start_ip += cb_data.ip_offset;
pi->end_ip += cb_data.ip_offset;
pi->start_ip += ip_offset;
pi->end_ip += ip_offset;
if (ip < pi->start_ip || ip >= pi->end_ip)
return -UNW_ENOINFO;