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authorTulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>2015-12-28 12:24:43 -0200
committerTulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>2016-01-08 17:47:33 -0200
commit42bf1c897170ff951c7fd0ee9da25f97ff787396 (patch)
tree3e69cd2d5201944482407b86b4854fe75ab34f12 /sysdeps/powerpc/nptl
parentbc49a7afd38c1bd00f0ad9fd6592a5959d5ba72e (diff)
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powerpc: Enforce compiler barriers on hardware transactions
Work around a GCC behavior with hardware transactional memory built-ins.
GCC doesn't treat the PowerPC transactional built-ins as compiler
barriers, moving instructions past the transaction boundaries and
altering their atomicity.
Diffstat (limited to 'sysdeps/powerpc/nptl')
-rw-r--r--sysdeps/powerpc/nptl/elide.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/powerpc/nptl/elide.h b/sysdeps/powerpc/nptl/elide.h
index c737464901..77bd82ecba 100644
--- a/sysdeps/powerpc/nptl/elide.h
+++ b/sysdeps/powerpc/nptl/elide.h
@@ -68,14 +68,14 @@ __get_new_count (uint8_t *adapt_count, int attempt)
     else								\
       for (int i = __elision_aconf.try_tbegin; i > 0; i--)		\
 	{								\
-	  if (__builtin_tbegin (0))					\
+	  if (__libc_tbegin (0))					\
 	    {								\
 	      if (is_lock_free)						\
 		{							\
 		  ret = 1;						\
 		  break;						\
 		}							\
-	      __builtin_tabort (_ABORT_LOCK_BUSY);			\
+	      __libc_tabort (_ABORT_LOCK_BUSY);				\
 	    }								\
 	  else								\
 	    if (!__get_new_count (&adapt_count,i))			\
@@ -90,7 +90,7 @@ __get_new_count (uint8_t *adapt_count, int attempt)
     if (__elision_aconf.try_tbegin > 0)				\
       {								\
 	if (write)						\
-	  __builtin_tabort (_ABORT_NESTED_TRYLOCK);		\
+	  __libc_tabort (_ABORT_NESTED_TRYLOCK);		\
 	ret = ELIDE_LOCK (adapt_count, is_lock_free);		\
       }								\
     ret;							\
@@ -102,7 +102,7 @@ __elide_unlock (int is_lock_free)
 {
   if (is_lock_free)
     {
-      __builtin_tend (0);
+      __libc_tend (0);
       return true;
     }
   return false;