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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Clean up bitops.h: all the basic atomic bitops access a 32-bit
ChangeSet 1.1583, 2005/05/28 10:52:29+01:00, kaf24@xxxxxxxxxxxxxxxxxxxx
Clean up bitops.h: all the basic atomic bitops access a 32-bit
memory location, even on x86/64.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
bitops.h | 64 +++++++++++++++++++++++++++++++--------------------------------
1 files changed, 32 insertions(+), 32 deletions(-)
diff -Nru a/xen/include/asm-x86/bitops.h b/xen/include/asm-x86/bitops.h
--- a/xen/include/asm-x86/bitops.h 2005-05-28 06:04:16 -04:00
+++ b/xen/include/asm-x86/bitops.h 2005-05-28 06:04:16 -04:00
@@ -38,10 +38,10 @@
* Note that @nr may be almost arbitrarily large; this function is not
* restricted to acting on a single-word quantity.
*/
-static __inline__ void set_bit(long nr, volatile void * addr)
+static __inline__ void set_bit(int nr, volatile void * addr)
{
__asm__ __volatile__( LOCK_PREFIX
- "bts"__OS" %1,%0"
+ "btsl %1,%0"
:"=m" (ADDR)
:"dIr" (nr));
}
@@ -55,10 +55,10 @@
* If it's called on the same region of memory simultaneously, the effect
* may be that only one operation succeeds.
*/
-static __inline__ void __set_bit(long nr, volatile void * addr)
+static __inline__ void __set_bit(int nr, volatile void * addr)
{
__asm__(
- "bts"__OS" %1,%0"
+ "btsl %1,%0"
:"=m" (ADDR)
:"dIr" (nr));
}
@@ -73,10 +73,10 @@
* you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit()
* in order to ensure changes are visible on other processors.
*/
-static __inline__ void clear_bit(long nr, volatile void * addr)
+static __inline__ void clear_bit(int nr, volatile void * addr)
{
__asm__ __volatile__( LOCK_PREFIX
- "btr"__OS" %1,%0"
+ "btrl %1,%0"
:"=m" (ADDR)
:"dIr" (nr));
}
@@ -92,10 +92,10 @@
* If it's called on the same region of memory simultaneously, the effect
* may be that only one operation succeeds.
*/
-static __inline__ void __change_bit(long nr, volatile void * addr)
+static __inline__ void __change_bit(int nr, volatile void * addr)
{
__asm__ __volatile__(
- "btc"__OS" %1,%0"
+ "btcl %1,%0"
:"=m" (ADDR)
:"dIr" (nr));
}
@@ -109,10 +109,10 @@
* Note that @nr may be almost arbitrarily large; this function is not
* restricted to acting on a single-word quantity.
*/
-static __inline__ void change_bit(long nr, volatile void * addr)
+static __inline__ void change_bit(int nr, volatile void * addr)
{
__asm__ __volatile__( LOCK_PREFIX
- "btc"__OS" %1,%0"
+ "btcl %1,%0"
:"=m" (ADDR)
:"dIr" (nr));
}
@@ -125,12 +125,12 @@
* This operation is atomic and cannot be reordered.
* It also implies a memory barrier.
*/
-static __inline__ int test_and_set_bit(long nr, volatile void * addr)
+static __inline__ int test_and_set_bit(int nr, volatile void * addr)
{
- long oldbit;
+ int oldbit;
__asm__ __volatile__( LOCK_PREFIX
- "bts"__OS" %2,%1\n\tsbb"__OS" %0,%0"
+ "btsl %2,%1\n\tsbbl %0,%0"
:"=r" (oldbit),"=m" (ADDR)
:"dIr" (nr) : "memory");
return oldbit;
@@ -145,12 +145,12 @@
* If two examples of this operation race, one can appear to succeed
* but actually fail. You must protect multiple accesses with a lock.
*/
-static __inline__ int __test_and_set_bit(long nr, volatile void * addr)
+static __inline__ int __test_and_set_bit(int nr, volatile void * addr)
{
- long oldbit;
+ int oldbit;
__asm__(
- "bts"__OS" %2,%1\n\tsbb"__OS" %0,%0"
+ "btsl %2,%1\n\tsbbl %0,%0"
:"=r" (oldbit),"=m" (ADDR)
:"dIr" (nr));
return oldbit;
@@ -164,12 +164,12 @@
* This operation is atomic and cannot be reordered.
* It also implies a memory barrier.
*/
-static __inline__ int test_and_clear_bit(long nr, volatile void * addr)
+static __inline__ int test_and_clear_bit(int nr, volatile void * addr)
{
- long oldbit;
+ int oldbit;
__asm__ __volatile__( LOCK_PREFIX
- "btr"__OS" %2,%1\n\tsbb"__OS" %0,%0"
+ "btrl %2,%1\n\tsbbl %0,%0"
:"=r" (oldbit),"=m" (ADDR)
:"dIr" (nr) : "memory");
return oldbit;
@@ -184,24 +184,24 @@
* If two examples of this operation race, one can appear to succeed
* but actually fail. You must protect multiple accesses with a lock.
*/
-static __inline__ int __test_and_clear_bit(long nr, volatile void * addr)
+static __inline__ int __test_and_clear_bit(int nr, volatile void * addr)
{
- long oldbit;
+ int oldbit;
__asm__(
- "btr"__OS" %2,%1\n\tsbb"__OS" %0,%0"
+ "btrl %2,%1\n\tsbbl %0,%0"
:"=r" (oldbit),"=m" (ADDR)
:"dIr" (nr));
return oldbit;
}
/* WARNING: non atomic and it can be reordered! */
-static __inline__ int __test_and_change_bit(long nr, volatile void * addr)
+static __inline__ int __test_and_change_bit(int nr, volatile void * addr)
{
- long oldbit;
+ int oldbit;
__asm__ __volatile__(
- "btc"__OS" %2,%1\n\tsbb"__OS" %0,%0"
+ "btcl %2,%1\n\tsbbl %0,%0"
:"=r" (oldbit),"=m" (ADDR)
:"dIr" (nr) : "memory");
return oldbit;
@@ -215,29 +215,29 @@
* This operation is atomic and cannot be reordered.
* It also implies a memory barrier.
*/
-static __inline__ int test_and_change_bit(long nr, volatile void * addr)
+static __inline__ int test_and_change_bit(int nr, volatile void * addr)
{
- long oldbit;
+ int oldbit;
__asm__ __volatile__( LOCK_PREFIX
- "btc"__OS" %2,%1\n\tsbb"__OS" %0,%0"
+ "btcl %2,%1\n\tsbbl %0,%0"
:"=r" (oldbit),"=m" (ADDR)
:"dIr" (nr) : "memory");
return oldbit;
}
-static __inline__ int constant_test_bit(long nr, const volatile void * addr)
+static __inline__ int constant_test_bit(int nr, const volatile void * addr)
{
return ((1UL << (nr & 31)) & (((const volatile unsigned int *) addr)[nr
>> 5])) != 0;
}
-static __inline__ int variable_test_bit(long nr, volatile void * addr)
+static __inline__ int variable_test_bit(int nr, volatile void * addr)
{
- long oldbit;
+ int oldbit;
__asm__ __volatile__(
- "bt"__OS" %2,%1\n\tsbb"__OS" %0,%0"
+ "btl %2,%1\n\tsbbl %0,%0"
:"=r" (oldbit)
:"m" (ADDR),"dIr" (nr));
return oldbit;
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