Update.

1999-06-13  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/powerpc/atomicity.h (exchange_and_add): Remove `volatile';
	add `memory' clobber; optimise for constant `val'.
	(atomic_add): Likewise.
	(test_and_set): Remove `volatile'; add `memory' clobber; be more
	like the original `test_and_set'.
	(compare_and_swap): Remove `volatile'; add `memory' clobber;
	optimise for constant `oldval'.
	(always_swap): Remove `volatile'; add `memory' clobber.

diff --git a/ChangeLog b/ChangeLog
index ab75ae8..88ed1e4 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+1999-06-13  Geoff Keating  <geoffk@ozemail.com.au>
+
+       * sysdeps/powerpc/atomicity.h (exchange_and_add): Remove `volatile';
+       add `memory' clobber; optimise for constant `val'.
+       (atomic_add): Likewise.
+       (test_and_set): Remove `volatile'; add `memory' clobber; be more
+       like the original `test_and_set'.
+       (compare_and_swap): Remove `volatile'; add `memory' clobber;
+       optimise for constant `oldval'.
+       (always_swap): Remove `volatile'; add `memory' clobber.
+
 1999-06-13  Andreas Jaeger  <aj@arthur.rhein-neckar.de>
 
        * sysdeps/i386/fpu/bits/mathinline.h: Disable signbit* inline

diff --git a/NEWS b/NEWS
index 6f23d5b..22eb71f 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -7,6 +7,13 @@ Please send GNU C library bug reports using the `glibcbug' script to
 <bugs@gnu.org>.  Questions and suggestions should be send to
 <bug-glibc@gnu.org>.
 \f
+Version 2.2
+
+* Thorsten Kukuk added secure mode support to nscd.
+
+* Update from Berkeley db 2.7.5.
+
+\f
 Version 2.1.1
 
 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.

diff --git a/sysdeps/powerpc/atomicity.h b/sysdeps/powerpc/atomicity.h
index 5b56532..bb5f491 100644 (file)
--- a/sysdeps/powerpc/atomicity.h
+++ b/sysdeps/powerpc/atomicity.h
@@ -1,5 +1,5 @@
 /* Low-level functions for atomic operations.  PowerPC version.
-   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -33,12 +33,12 @@ __attribute__ ((unused))
 exchange_and_add (volatile uint32_t *mem, int val)
 {
   int tmp, result;
-  __asm__ __volatile__ ("\
+  __asm__ ("\
 0:     lwarx   %0,0,%2
-       add     %1,%3,%0
+       add%I3  %1,%0,%3
        stwcx.  %1,0,%2
        bne-    0b
-" : "=&r"(result), "=&r"(tmp) : "r" (mem), "r"(val) : "cr0");
+" : "=&b"(result), "=&r"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory");
   return result;
 }
 
@@ -47,12 +47,12 @@ __attribute__ ((unused))
 atomic_add (volatile uint32_t *mem, int val)
 {
   int tmp;
-  __asm__ __volatile__("\
+  __asm__ ("\
 0:     lwarx   %0,0,%1
-       add     %0,%2,%0
+       add%I2  %0,%0,%2
        stwcx.  %0,0,%1
        bne-    0b
-" : "=&r"(tmp) : "r" (mem), "r"(val) : "cr0");
+" : "=&b"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory");
 }
 
 static __ATOMICITY_INLINE int
@@ -60,16 +60,16 @@ __attribute__ ((unused))
 compare_and_swap (volatile long int *p, long int oldval, long int newval)
 {
   int result;
-  __asm__ __volatile__ ("\
+  __asm__ ("\
 0:     lwarx   %0,0,%1
-       xor.    %0,%0,%2
+       sub%I2c.        %0,%0,%2
        cntlzw  %0,%0
        bne-    1f
        stwcx.  %3,0,%1
        bne-    0b
-1:     srwi    %0,%0,5
-" : "=&r"(result) : "r"(p), "r"(oldval), "r"(newval) : "cr0");
-  return result;
+1:     
+" : "=&b"(result) : "r"(p), "Ir"(oldval), "r"(newval) : "cr0", "memory");
+  return result >> 5;
 }
 
 static __ATOMICITY_INLINE long int
@@ -77,28 +77,27 @@ __attribute__ ((unused))
 always_swap (volatile long int *p, long int newval)
 {
   long int result;
-  __asm__ __volatile__ ("\
+  __asm__ ("\
 0:     lwarx   %0,0,%1
        stwcx.  %2,0,%1
        bne-    0b
-" : "=&r"(result) : "r"(p), "r"(newval) : "cr0");
+" : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory");
   return result;
 }
 
 static __ATOMICITY_INLINE int
 __attribute__ ((unused))
-test_and_set (volatile long int *p, long int oldval, long int newval)
+test_and_set (volatile long int *p, long int newval)
 {
   int result;
-  __asm__ __volatile__ ("\
+  __asm__ ("\
 0:     lwarx   %0,0,%1
-       xor.    %0,%0,%2
-       cntlzw  %0,%0
+       cmpwi   %0,0
        bne-    1f
-       stwcx.  %3,0,%1
+       stwcx.  %2,0,%1
        bne-    0b
-1:     srwi    %0,%0,5
-" : "=&r"(result) : "r"(p), "r"(oldval), "r"(newval) : "cr0");
+1:
+" : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory");
   return result;
 }