* sysdeps/sparc/fpu/fraiseexcpt.c (__feraiseexcept): Fix raising cvs/fedora-glibc-20070815T2049

FE_UNDERFLOW on Niagara CPUs.
	* sysdeps/sparc/fpu/feholdexcpt.c (feholdexcept): Clear all
	exceptions.

	* sysdeps/unix/sysv/linux/sparc/internaltypes.h (sparc_new_sem,
	sparc_old_sem): New structs.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sem_wait.c
	(__sem_wait_cleanup): New function.
	(__new_sem_wait): Use sparc_new_sem structure.  Bump and afterwards
	decrease nwaiters.  Register __sem_wait_cleanup as cleanup handler.
	Pass isem->private ^ FUTEX_PRIVATE_FLAG as last argument to
	lll_futex_wait.
	(__old_sem_wait): New function.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_wait.c: Include
	nptl/sysdeps/unix/sysv/linux/sparc version.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_timedwait.c:
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_post.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sem_trywait.c
	(__new_sem_trywait): Use sparc_old_sem structure.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sem_timedwait.c
	(sem_timedwait): Use sparc_new_sem structure.  Bump and afterwards
	decrease nwaiters.  Register __sem_wait_cleanup as cleanup handler.
	Pass isem->private ^ FUTEX_PRIVATE_FLAG as last argument to
	lll_futex_timed_wait.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sem_post.c (__new_sem_post):
	Use sparc_new_sem structure.  Only wake if nwaiters > 0.  Pass
	isem->private ^ FUTEX_PRIVATE_FLAG as last argument to
	lll_futex_wake.
	(__old_sem_post): New function.
	* sysdeps/unix/sysv/linux/sparc/sem_wait.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sem_init.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sem_timedwait.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sem_post.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/sem_init.c: Remove.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sem_init.c: Remove.
2007-08-15  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/sparc/fpu/fraiseexcpt.c (__feraiseexcept): Fix raising
	FE_UNDERFLOW on Niagara CPUs.

	* sysdeps/sparc/fpu/feholdexcpt.c (feholdexcept): Clear all
	exceptions.

1 files changed, 40 insertions, 11 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/sparc32/sem_post.c b/nptl/sysdeps/unix/sysv/linux/sparc/sparc32/sem_post.c
index 527aedfdc7..dbd34f2210 100644
--- a/nptl/sysdeps/unix/sysv/linux/sparc/sparc32/sem_post.c
+++ b/nptl/sysdeps/unix/sysv/linux/sparc/sparc32/sem_post.c
@@ -29,19 +29,51 @@
 int
 __new_sem_post (sem_t *sem)
 {
-  int *futex = (int *) sem, nr;
+  struct sparc_new_sem *isem = (struct sparc_new_sem *) sem;
+  int nr;
 
   if (__atomic_is_v9)
-    nr = atomic_increment_val (futex);
+    nr = atomic_increment_val (&isem->value);
   else
     {
-      __sparc32_atomic_do_lock24 (futex + 1);
-      nr = ++*futex;
-      __sparc32_atomic_do_unlock24 (futex + 1);
+      __sparc32_atomic_do_lock24 (&isem->lock);
+      nr = ++(isem->value);
+      __sparc32_atomic_do_unlock24 (&isem->lock);
     }
-  int err = lll_futex_wake (futex, nr,
-			    // XYZ check mutex flag
-			    LLL_SHARED);
+  atomic_full_barrier ();
+  if (isem->nwaiters > 0)
+    {
+      int err = lll_futex_wake (&isem->value, 1,
+				isem->private ^ FUTEX_PRIVATE_FLAG);
+      if (__builtin_expect (err, 0) < 0)
+	{
+	  __set_errno (-err);
+	  return -1;
+	}
+    }
+  return 0;
+}
+versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1);
+
+
+#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1)
+int
+attribute_compat_text_section
+__old_sem_post (sem_t *sem)
+{
+  struct sparc_old_sem *isem = (struct sparc_old_sem *) sem;
+  int nr;
+
+  if (__atomic_is_v9)
+    nr = atomic_increment_val (&isem->value);
+  else
+    {
+      __sparc32_atomic_do_lock24 (&isem->lock);
+      nr = ++(isem->value);
+      __sparc32_atomic_do_unlock24 (&isem->lock);
+    }
+  int err = lll_futex_wake (&isem->value, 1,
+			    isem->private ^ FUTEX_PRIVATE_FLAG);
   if (__builtin_expect (err, 0) < 0)
     {
       __set_errno (-err);
@@ -49,8 +81,5 @@ __new_sem_post (sem_t *sem)
     }
   return 0;
 }
-versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1);
-#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1)
-strong_alias (__new_sem_post, __old_sem_post)
 compat_symbol (libpthread, __old_sem_post, sem_post, GLIBC_2_0);
 #endif