From: Ulrich Drepper <drepper@redhat.com>
Date: Thu, 17 Jan 2002 00:41:15 +0000 (+0000)
Subject: (MEMORY_BARRIER): Define.
X-Git-Tag: cvs/glibc-2-2-5~22
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=53e010438b3c6306e99dd5dcf81b7741ba1bc493;p=thirdparty%2Fglibc.git

(MEMORY_BARRIER): Define.
(CURRENT_STACK_FRAME): Remove duplicate definition.
---

diff --git a/linuxthreads/sysdeps/s390/s390-32/pt-machine.h b/linuxthreads/sysdeps/s390/s390-32/pt-machine.h
index 3afc9d5d609..f84ccdfc903 100644
--- a/linuxthreads/sysdeps/s390/s390-32/pt-machine.h
+++ b/linuxthreads/sysdeps/s390/s390-32/pt-machine.h
@@ -23,6 +23,11 @@
 # define PT_EI extern inline
 #endif
 
+/* For multiprocessor systems, we want to ensure all memory accesses
+   are completed before we reset a lock.  On other systems, we still
+   need to make sure that the compiler has flushed everything to memory.  */
+#define MEMORY_BARRIER() __asm__ __volatile__ ("bcr 15,0" : : : "memory")
+
 /* Spinlock implementation; required.  */
 PT_EI long int
 testandset (int *spinlock)
@@ -94,9 +99,3 @@ __compare_and_swap(long int *p, long int oldval, long int newval)
         return retval == 0;
 }
 
-
-
-/* Get some notion of the current stack.  Need not be exactly the top
-   of the stack, just something somewhere in the current frame.  */
-#define CURRENT_STACK_FRAME  stack_pointer
-register char * stack_pointer __asm__ ("%r15");
diff --git a/linuxthreads/sysdeps/s390/s390-64/pt-machine.h b/linuxthreads/sysdeps/s390/s390-64/pt-machine.h
index f205c1245ce..8b123352d99 100644
--- a/linuxthreads/sysdeps/s390/s390-64/pt-machine.h
+++ b/linuxthreads/sysdeps/s390/s390-64/pt-machine.h
@@ -23,6 +23,11 @@
 # define PT_EI extern inline
 #endif
 
+/* For multiprocessor systems, we want to ensure all memory accesses
+   are completed before we reset a lock.  On other systems, we still
+   need to make sure that the compiler has flushed everything to memory.  */
+#define MEMORY_BARRIER() __asm__ __volatile__ ("bcr 15,0" : : : "memory")
+
 /* Spinlock implementation; required.  */
 PT_EI long int
 testandset (int *spinlock)
@@ -99,9 +104,3 @@ __compare_and_swap(long int *p, long int oldval, long int newval)
         return retval == 0;
 }
 
-
-
-/* Get some notion of the current stack.  Need not be exactly the top
-   of the stack, just something somewhere in the current frame.  */
-#define CURRENT_STACK_FRAME  stack_pointer
-register char * stack_pointer __asm__ ("%r15");