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Automated import from //branches/master/...@140951,140951

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Iliyan Malchev 2009-03-24 19:01:56 -07:00 committed by The Android Open Source Project
parent edbe7fc97b
commit ff9ce60919
1 changed files with 38 additions and 15 deletions
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53
linker/linker.c
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@ -37,7 +37,7 @@
#include <dlfcn.h>
#include <sys/stat.h>
//#include <pthread.h>
#include <pthread.h>
#include <sys/mman.h>
@ -110,15 +110,11 @@ unsigned bitmask[4096];
*/
extern void __attribute__((noinline)) rtld_db_dlactivity(void);
extern void sched_yield(void);
static struct r_debug _r_debug = {1, NULL, &rtld_db_dlactivity,
RT_CONSISTENT, 0};
static struct link_map *r_debug_tail = 0;
//static pthread_mutex_t _r_debug_lock = PTHREAD_MUTEX_INITIALIZER;
static volatile int loader_lock = 0;
static pthread_mutex_t _r_debug_lock = PTHREAD_MUTEX_INITIALIZER;
static void insert_soinfo_into_debug_map(soinfo * info)
{
@ -147,6 +143,17 @@ static void insert_soinfo_into_debug_map(soinfo * info)
r_debug_tail = map;
}
static void remove_soinfo_from_debug_map(soinfo * info)
{
struct link_map * map = &(info->linkmap);
if (r_debug_tail == map)
r_debug_tail = map->l_prev;
if (map->l_prev) map->l_prev->l_next = map->l_next;
if (map->l_next) map->l_next->l_prev = map->l_prev;
}
void notify_gdb_of_load(soinfo * info)
{
if (info->flags & FLAG_EXE) {
@ -154,14 +161,7 @@ void notify_gdb_of_load(soinfo * info)
return;
}
/* yes, this is a little gross, but it does avoid
** pulling in pthread_*() and at the moment we don't
** dlopen() anything anyway
*/
while(__atomic_swap(1, &loader_lock) != 0) {
sched_yield();
usleep(5000);
}
pthread_mutex_lock(&_r_debug_lock);
_r_debug.r_state = RT_ADD;
rtld_db_dlactivity();
@ -171,7 +171,27 @@ void notify_gdb_of_load(soinfo * info)
_r_debug.r_state = RT_CONSISTENT;
rtld_db_dlactivity();
__atomic_swap(0, &loader_lock);
pthread_mutex_unlock(&_r_debug_lock);
}
void notify_gdb_of_unload(soinfo * info)
{
if (info->flags & FLAG_EXE) {
// GDB already knows about the main executable
return;
}
pthread_mutex_lock(&_r_debug_lock);
_r_debug.r_state = RT_DELETE;
rtld_db_dlactivity();
remove_soinfo_from_debug_map(info);
_r_debug.r_state = RT_CONSISTENT;
rtld_db_dlactivity();
pthread_mutex_unlock(&_r_debug_lock);
}
void notify_gdb_of_libraries()
@ -1066,6 +1086,7 @@ unsigned unload_library(soinfo *si)
pid, si->name, si->base);
ba_free(si->ba_index);
}
notify_gdb_of_unload(si);
free_info(si);
si->refcount = 0;
}
@ -1213,6 +1234,8 @@ static int reloc_library(soinfo *si, Elf32_Rel *rel, unsigned count)
reloc, s->st_size, sym_addr, sym_name);
memcpy((void*)reloc, (void*)sym_addr, s->st_size);
break;
case R_ARM_NONE:
break;
#endif /* ANDROID_ARM_LINKER */
default: