m2-internship/libunwind-eh_elf
1
0
Fork 0
mirror of https://github.com/tobast/libunwind-eh_elf.git synced 2025-02-02 12:52:53 +01:00
Code Issues Releases Activity

(flush_script_cache): Take additional "address-space" argument.

Browse source 
(get_script_cache): Ditto.
(script_lookup): Renamed from ia64_script_lookup() and add "address-space" argument.
(ia64_script_lookup): New function.
(build_script): Get script from the caller instead of via script_new().
(ia64_find_save_locs): If caching is disabled, create a temporary script and
	do not update the script cache.

(Logical change 1.27)
This commit is contained in:
mostang.com!davidm 2002-11-16 06:50:04 +00:00
parent 07beae63f4
commit b5e3d308ef
1 changed files with 54 additions and 38 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

92
src/ia64/script.c
View file

@ -51,36 +51,35 @@ cache_match (struct ia64_script *script, unw_word_t ip, unw_word_t pr)
}
static inline void
flush_script_cache (struct ia64_script_cache *cache)
flush_script_cache (unw_addr_space_t as, struct ia64_script_cache *cache)
{
int i;
for (i = 0; i < IA64_UNW_CACHE_SIZE; ++i)
cache->buckets[i].ip = 0;
cache->generation = unw.cache_generation;
cache->generation = as->cache_generation;
}
static inline struct ia64_script_cache *
get_script_cache (void)
get_script_cache (unw_addr_space_t as)
{
struct ia64_script_cache *cache = &unw.global_cache;
struct ia64_script_cache *cache = &as->global_cache;
#ifdef HAVE___THREAD
if (unw.caching_policy == UNW_CACHE_PER_THREAD)
if (as->caching_policy == UNW_CACHE_PER_THREAD)
cache = &ia64_per_thread_cache;
#endif
if (unw.cache_generation - cache->generation < 0x80000000)
flush_script_cache (cache);
if (as->cache_generation - cache->generation < 0x80000000)
flush_script_cache (as, cache);
return cache;
}
inline struct ia64_script *
ia64_script_lookup (struct ia64_cursor *c)
static struct ia64_script *
script_lookup (struct ia64_script_cache *cache, struct ia64_cursor *c)
{
struct ia64_script_cache *cache = get_script_cache ();
struct ia64_script *script = cache->buckets + c->hint;
unsigned short index;
unw_word_t ip, pr;
@ -118,6 +117,12 @@ ia64_script_lookup (struct ia64_cursor *c)
}
}
struct ia64_script *
ia64_script_lookup (struct ia64_cursor *c)
{
return script_lookup (get_script_cache (c->as), c);
}
/* On returning, the lock for the SCRIPT is still being held. */
static inline struct ia64_script *
@ -343,10 +348,8 @@ compile_reg (struct ia64_state_record *sr, int i, struct ia64_script *script)
entrypoint of the function that called OLD_STATE. */
static inline int
build_script (struct ia64_script_cache *cache, struct ia64_cursor *c,
struct ia64_script **scriptp)
build_script (struct ia64_cursor *c, struct ia64_script *script)
{
struct ia64_script *script;
struct ia64_state_record sr;
struct ia64_script_insn insn;
int i, ret;
@ -354,15 +357,6 @@ build_script (struct ia64_script_cache *cache, struct ia64_cursor *c,
STAT(++unw.stat.script.builds; start = ia64_get_itc ());
STAT(unw.stat.script.parse_time += ia64_get_itc () - parse_start);
script = script_new (cache, c->ip);
if (!script)
{
dprintf ("%s: failed to create unwind script\n", __FUNCTION__);
STAT(unw.stat.script.build_time += ia64_get_itc() - start);
return -UNW_EUNSPEC;
}
cache->buckets[c->prev_script].hint = script - cache->buckets;
ret = ia64_create_state_record (c, &sr);
if (ret < 0)
return ret;
@ -402,7 +396,6 @@ build_script (struct ia64_script_cache *cache, struct ia64_cursor *c,
ia64_free_state_record (&sr);
STAT(unw.stat.script.build_time += ia64_get_itc () - start);
*scriptp = script;
return 0;
}
@ -483,24 +476,47 @@ run_script (struct ia64_script *script, struct ia64_cursor *c)
int
ia64_find_save_locs (struct ia64_cursor *c)
{
struct ia64_script_cache *cache = get_script_cache ();
struct ia64_script *script = ia64_script_lookup (c);
int ret;
struct ia64_script *script = NULL;
int ret = 0;
if (!script)
if (c->as->caching_policy == UNW_CACHE_NONE)
{
ret = build_script (cache, c, &script);
if (ret < 0)
{
if (ret != UNW_ESTOPUNWIND)
dprintf ("%s: failed to locate/build unwind script for ip %lx\n",
__FUNCTION__, (long) c->ip);
return ret;
}
}
c->hint = script->hint;
c->prev_script = script - cache->buckets;
struct ia64_script tmp_script;
script = &tmp_script;
script->ip = c->ip;
script->hint = 0;
script->count = 0;
ret = build_script (c, script);
}
else
{
struct ia64_script_cache *cache = get_script_cache (c->as);
script = script_lookup (cache, c);
if (!script)
{
script = script_new (cache, c->ip);
if (!script)
{
dprintf ("%s: failed to create unwind script\n", __FUNCTION__);
STAT(unw.stat.script.build_time += ia64_get_itc() - start);
return -UNW_EUNSPEC;
}
cache->buckets[c->prev_script].hint = script - cache->buckets;
ret = build_script (c, script);
}
c->hint = script->hint;
c->prev_script = script - cache->buckets;
}
if (ret < 0)
{
if (ret != UNW_ESTOPUNWIND)
dprintf ("%s: failed to locate/build unwind script for ip %lx\n",
__FUNCTION__, (long) c->ip);
return ret;
}
run_script (script, c);
return 0;
}