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Code Issues Releases Activity

find_proc_info refactoring

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This commit is contained in:
Alexander Esilevich 2010-07-29 09:12:35 +07:00
parent e61c4dde18
commit 14e193cab6
1 changed files with 56 additions and 49 deletions
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105
src/dwarf/Gfind_proc_info-lsb.c
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@ -494,7 +494,7 @@ callback (struct dl_phdr_info *info, size_t size, void *ptr)
{
/* Assume that _DYNAMIC is writable and GLIBC has
relocated it (true for x86 at least). */
di->gp = dyn->d_un.d_ptr;
pi->gp = dyn->d_un.d_ptr;
break;
}
}
@ -502,8 +502,7 @@ callback (struct dl_phdr_info *info, size_t size, void *ptr)
/* Otherwise this is a static executable with no _DYNAMIC. Assume
that data-relative addresses are relative to 0, i.e.,
absolute. */
di->gp = 0;
pi->gp = di->gp;
pi->gp = 0;
hdr = (struct dwarf_eh_frame_hdr *) (p_eh_hdr->p_vaddr + load_base);
if (hdr->version != DW_EH_VERSION)
@ -560,6 +559,7 @@ callback (struct dl_phdr_info *info, size_t size, void *ptr)
else
{
int err;
unw_word_t fde_addr;
di->format = UNW_INFO_FORMAT_REMOTE_TABLE;
di->start_ip = p_text->p_vaddr + load_base;
@ -579,11 +579,19 @@ callback (struct dl_phdr_info *info, size_t size, void *ptr)
(long) di->gp, (long) di->u.rti.table_data);
err = dwarf_search_unwind_table_remote (cb_data->as, cb_data->ip,
di, pi,
di, &fde_addr,
need_unwind_info, cb_data->arg);
if(err < 0)
return err;
if ((err = dwarf_extract_proc_info_from_fde (cb_data->as, a, &fde_addr, pi,
need_unwind_info,
0, cb_data->arg)) < 0)
return err;
if (cb_data->ip < pi->start_ip || cb_data->ip >= pi->end_ip)
return -UNW_ENOINFO;
return 1;
}
}
@ -606,6 +614,7 @@ callback (struct dl_phdr_info *info, size_t size, void *ptr)
uint64_t cie_id = 0;
struct debug_frame_tab *tab;
int err;
unw_word_t fde_addr;
Debug (15, "loaded .debug_frame\n");
@ -720,11 +729,25 @@ callback (struct dl_phdr_info *info, size_t size, void *ptr)
(long) di->u.ti.segbase, (long) di->u.ti.table_len,
(long) di->gp, (long) di->u.ti.table_data);
err = dwarf_search_unwind_table_local (cb_data->as, cb_data->ip, di, pi,
err = dwarf_search_unwind_table_local (cb_data->as, cb_data->ip, di, &fde_addr,
need_unwind_info, cb_data->arg);
if(err < 0)
return err;
if ((ret = dwarf_extract_proc_info_from_fde (cb_data->as, a, &fde_addr, pi,
need_unwind_info,
(uintptr_t) fdesc->debug_frame,
cb_data->arg)) < 0)
return ret;
/* .debug_frame uses an absolute encoding that does not know about any
shared library relocation. */
pi->start_ip += segbase;
pi->end_ip += segbase;
if (cb_data->ip < pi->start_ip || cb_data->ip >= pi->end_ip)
return -UNW_ENOINFO;
return 1;
}
}
@ -831,15 +854,14 @@ remote_lookup (unw_addr_space_t as,
int
dwarf_search_unwind_table_ (unw_addr_space_t as, unw_word_t ip,
unw_word_t start_ip, unw_word_t end_ip,
unw_word_t segbase, size_t table_len,
const struct table_entry *table,
unw_word_t debug_frame_base,
unw_proc_info_t *pi,
int need_unwind_info, void *arg)
unw_word_t start_ip, unw_word_t end_ip,
unw_word_t segbase, size_t table_len,
const struct table_entry *table,
unw_word_t debug_frame_base,
unw_word_t *fde_addr,
int need_unwind_info, void *arg)
{
const struct table_entry *e = NULL;
unw_word_t fde_addr;
unw_accessors_t *a;
#ifndef UNW_LOCAL_ONLY
struct table_entry ent;
@ -876,30 +898,35 @@ dwarf_search_unwind_table_ (unw_addr_space_t as, unw_word_t ip,
unwind info. */
return -UNW_ENOINFO;
}
Debug (15, "ip=0x%lx, start_ip=0x%lx\n",
(long) ip, (long) (e->start_ip_offset));
if (debug_frame_base)
fde_addr = e->fde_offset + debug_frame_base;
*fde_addr = e->fde_offset + debug_frame_base;
else
fde_addr = e->fde_offset + segbase;
*fde_addr = e->fde_offset + segbase;
Debug (1, "e->fde_offset = %x, segbase = %x, debug_frame_base = %x, "
"fde_addr = %x\n", (int) e->fde_offset, (int) segbase,
(int) debug_frame_base, (int) fde_addr);
if ((ret = dwarf_extract_proc_info_from_fde (as, a, &fde_addr, pi,
need_unwind_info,
debug_frame_base, arg)) < 0)
return ret;
return 0;
// if ((ret = dwarf_extract_proc_info_from_fde (as, a, &fde_addr, pi,
// need_unwind_info,
// debug_frame_base, arg)) < 0)
// return ret;
//
// return 0;
}
PROTECTED int
dwarf_search_unwind_table_remote (unw_addr_space_t as, unw_word_t ip,
unw_dyn_info_t *di, unw_proc_info_t *pi,
unw_dyn_info_t *di, unw_word_t *fde_addr,
int need_unwind_info, void *arg)
{
int ret;
const struct table_entry *table =
(const struct table_entry *) (uintptr_t) di->u.rti.table_data;
size_t table_len = di->u.rti.table_len * sizeof (unw_word_t);
@ -907,25 +934,17 @@ dwarf_search_unwind_table_remote (unw_addr_space_t as, unw_word_t ip,
assert (di->format = UNW_INFO_FORMAT_REMOTE_TABLE);
ret = dwarf_search_unwind_table_ (as, ip, di->start_ip, di->end_ip,
segbase, table_len,
table, 0,
pi, need_unwind_info, arg);
if (ret < 0)
return ret;
if (ip < pi->start_ip || ip >= pi->end_ip)
return -UNW_ENOINFO;
return 0;
return dwarf_search_unwind_table_ (as, ip, di->start_ip, di->end_ip,
segbase, table_len,
table, 0,
fde_addr, need_unwind_info, arg);
}
PROTECTED int
dwarf_search_unwind_table_local (unw_addr_space_t as, unw_word_t ip,
unw_dyn_info_t *di, unw_proc_info_t *pi,
unw_dyn_info_t *di, unw_word_t *fde_addr,
int need_unwind_info, void *arg)
{
int ret;
struct unw_debug_frame_list *fdesc = (void *) di->u.ti.table_data;
/* UNW_INFO_FORMAT_TABLE (i.e. .debug_frame) is currently only
@ -942,22 +961,10 @@ dwarf_search_unwind_table_local (unw_addr_space_t as, unw_word_t ip,
assert (as == unw_local_addr_space);
assert (di->format == UNW_INFO_FORMAT_TABLE);
ret = dwarf_search_unwind_table_ (as, ip, di->start_ip, di->end_ip,
segbase, table_len,
table, debug_frame_base,
pi, need_unwind_info, arg);
if (ret < 0)
return ret;
/* .debug_frame uses an absolute encoding that does not know about any
shared library relocation. */
pi->start_ip += segbase;
pi->end_ip += segbase;
if (ip < pi->start_ip || ip >= pi->end_ip)
return -UNW_ENOINFO;
return 0;
return dwarf_search_unwind_table_ (as, ip, di->start_ip, di->end_ip,
segbase, table_len,
table, debug_frame_base,
fde_addr, need_unwind_info, arg);
}
PROTECTED int