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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2012-02-12 06:23:08 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2012-02-12 06:23:08 +0000 |
| commit | 12e3c3961436e0bc19f7fcbf7dd5ba6d556b0803 (patch) | |
| tree | d088dbdf76ccf89230dc607d000488ace3bb43e9 /libgo/runtime/thread.c | |
| parent | 22d87829789be10d2b3a88c2ee6253d88ff88d6b (diff) | |
| download | gcc-12e3c3961436e0bc19f7fcbf7dd5ba6d556b0803.zip gcc-12e3c3961436e0bc19f7fcbf7dd5ba6d556b0803.tar.gz gcc-12e3c3961436e0bc19f7fcbf7dd5ba6d556b0803.tar.bz2 | |
re PR go/52084 (go tests fail to link on powerpc-linux-gnu (undefined reference to __sync_add_and_fetch_8))
PR go/52084
libgo: Provide more __sync functions if required.
From-SVN: r184138
Diffstat (limited to 'libgo/runtime/thread.c')
| -rw-r--r-- | libgo/runtime/thread.c | 59 |
1 files changed, 58 insertions, 1 deletions
diff --git a/libgo/runtime/thread.c b/libgo/runtime/thread.c index d43e224..748a62d5 100644 --- a/libgo/runtime/thread.c +++ b/libgo/runtime/thread.c @@ -11,7 +11,7 @@ /* For targets which don't have the required sync support. Really these should be provided by gcc itself. FIXME. */ -#if !defined (HAVE_SYNC_BOOL_COMPARE_AND_SWAP_4) || !defined (HAVE_SYNC_FETCH_AND_ADD_4) +#if !defined (HAVE_SYNC_BOOL_COMPARE_AND_SWAP_4) || !defined (HAVE_SYNC_BOOL_COMPARE_AND_SWAP_8) || !defined (HAVE_SYNC_FETCH_AND_ADD_4) || !defined (HAVE_SYNC_ADD_AND_FETCH_8) static pthread_mutex_t sync_lock = PTHREAD_MUTEX_INITIALIZER; @@ -48,6 +48,37 @@ __sync_bool_compare_and_swap_4 (uint32* ptr, uint32 old, uint32 new) #endif +#ifndef HAVE_SYNC_BOOL_COMPARE_AND_SWAP_8 + +_Bool +__sync_bool_compare_and_swap_8 (uint64*, uint64, uint64) + __attribute__ ((visibility ("hidden"))); + +_Bool +__sync_bool_compare_and_swap_8 (uint64* ptr, uint64 old, uint64 new) +{ + int i; + _Bool ret; + + i = pthread_mutex_lock (&sync_lock); + __go_assert (i == 0); + + if (*ptr != old) + ret = 0; + else + { + *ptr = new; + ret = 1; + } + + i = pthread_mutex_unlock (&sync_lock); + __go_assert (i == 0); + + return ret; +} + +#endif + #ifndef HAVE_SYNC_FETCH_AND_ADD_4 uint32 @@ -74,6 +105,32 @@ __sync_fetch_and_add_4 (uint32* ptr, uint32 add) #endif +#ifndef HAVE_SYNC_ADD_AND_FETCH_8 + +uint64 +__sync_add_and_fetch_8 (uint64*, uint64) + __attribute__ ((visibility ("hidden"))); + +uint64 +__sync_add_and_fetch_8 (uint64* ptr, uint64 add) +{ + int i; + uint64 ret; + + i = pthread_mutex_lock (&sync_lock); + __go_assert (i == 0); + + *ptr += add; + ret = *ptr; + + i = pthread_mutex_unlock (&sync_lock); + __go_assert (i == 0); + + return ret; +} + +#endif + // Called to initialize a new m (including the bootstrap m). void runtime_minit(void) |