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(unw_search_ia64_unwind_table): Always return unwind_info in the

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local case since it's trivial to do so and saves us time if
	later on we need to build a script for that procedure.

2005/02/23 14:40:44-08:00 mostang.com!davidm
Adjust for sigset_t to intrmask_t renaming.

2004/10/25 05:21:51-07:00 hp.com!davidm
(unw_search_ia64_unwind_table): Clarify comment and add a Debug() statement
	for the case where we find a bad unwind-header version.

(Logical change 1.290)
This commit is contained in:
hp.com!davidm 2005-05-03 09:13:17 +00:00
parent f9b8ba0d47
commit 6fc50d4ed6
1 changed files with 25 additions and 12 deletions
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37
src/ia64/Gtables.c
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@ -1,5 +1,5 @@
/* libunwind - a platform-independent unwind library
Copyright (c) 2001-2004 Hewlett-Packard Development Company, L.P.
Copyright (c) 2001-2005 Hewlett-Packard Development Company, L.P.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
@ -255,7 +255,7 @@ unw_search_ia64_unwind_table (unw_addr_space_t as, unw_word_t ip,
unw_word_t addr, hdr_addr, info_addr, info_end_addr, hdr, *wp;
const struct ia64_table_entry *e = NULL;
unw_word_t handler_offset, segbase = 0;
int ret;
int ret, is_local;
assert ((di->format == UNW_INFO_FORMAT_TABLE
|| di->format == UNW_INFO_FORMAT_REMOTE_TABLE)
@ -305,20 +305,33 @@ unw_search_ia64_unwind_table (unw_addr_space_t as, unw_word_t ip,
hdr_addr = e->info_offset + segbase;
info_addr = hdr_addr + 8;
/* read the header word: */
/* Read the header word. Note: the actual unwind-info is always
assumed to reside in memory, independent of whether di->format is
UNW_INFO_FORMAT_TABLE or UNW_INFO_FORMAT_REMOTE_TABLE. */
if ((ret = read_mem (as, hdr_addr, &hdr, arg)) < 0)
return ret;
if (IA64_UNW_VER (hdr) != 1)
return -UNW_EBADVERSION;
{
Debug (1, "Unknown header version %ld (hdr word=0x%lx @ 0x%lx)\n",
IA64_UNW_VER (hdr), (unsigned long) hdr,
(unsigned long) hdr_addr);
return -UNW_EBADVERSION;
}
info_end_addr = info_addr + 8 * IA64_UNW_LENGTH (hdr);
if (need_unwind_info)
is_local = is_local_addr_space (as);
/* If we must have the unwind-info, return it. Also, if we are in
the local address-space, return the unwind-info because it's so
cheap to do so and it may come in handy later on. */
if (need_unwind_info || is_local)
{
pi->unwind_info_size = 8 * IA64_UNW_LENGTH (hdr);
if (is_local_addr_space (as))
if (is_local)
pi->unwind_info = (void *) (uintptr_t) info_addr;
else
{
@ -606,12 +619,12 @@ check_callback (struct dl_phdr_info *info, size_t size, void *ptr)
static inline int
validate_cache (unw_addr_space_t as)
{
sigset_t saved_sigmask;
intrmask_t saved_mask;
int ret;
sigprocmask (SIG_SETMASK, &unwi_full_sigmask, &saved_sigmask);
sigprocmask (SIG_SETMASK, &unwi_full_mask, &saved_mask);
ret = dl_iterate_phdr (check_callback, as);
sigprocmask (SIG_SETMASK, &saved_sigmask, NULL);
sigprocmask (SIG_SETMASK, &saved_mask, NULL);
return ret;
}
@ -635,14 +648,14 @@ tdep_find_proc_info (unw_addr_space_t as, unw_word_t ip,
{
# if defined(HAVE_DL_ITERATE_PHDR)
unw_dyn_info_t di, *dip = &di;
sigset_t saved_sigmask;
intrmask_t saved_mask;
int ret;
di.u.ti.segbase = ip; /* this is cheap... */
sigprocmask (SIG_SETMASK, &unwi_full_sigmask, &saved_sigmask);
sigprocmask (SIG_SETMASK, &unwi_full_mask, &saved_mask);
ret = dl_iterate_phdr (callback, &di);
sigprocmask (SIG_SETMASK, &saved_sigmask, NULL);
sigprocmask (SIG_SETMASK, &saved_mask, NULL);
if (ret <= 0)
{