63 lines
1.4 KiB
ArmAsm
63 lines
1.4 KiB
ArmAsm
/* $Id: atomic.S,v 1.4 2001/11/18 00:12:56 davem Exp $
|
|
* atomic.S: These things are too big to do inline.
|
|
*
|
|
* Copyright (C) 1999 David S. Miller (davem@redhat.com)
|
|
*/
|
|
|
|
#include <asm/asi.h>
|
|
|
|
.text
|
|
.align 64
|
|
|
|
.globl __atomic_add
|
|
.type __atomic_add,#function
|
|
__atomic_add: /* %o0 = increment, %o1 = atomic_ptr */
|
|
lduw [%o1], %g5
|
|
add %g5, %o0, %g7
|
|
cas [%o1], %g5, %g7
|
|
cmp %g5, %g7
|
|
bne,pn %icc, __atomic_add
|
|
membar #StoreLoad | #StoreStore
|
|
retl
|
|
add %g7, %o0, %o0
|
|
.size __atomic_add, .-__atomic_add
|
|
|
|
.globl __atomic_sub
|
|
.type __atomic_sub,#function
|
|
__atomic_sub: /* %o0 = increment, %o1 = atomic_ptr */
|
|
lduw [%o1], %g5
|
|
sub %g5, %o0, %g7
|
|
cas [%o1], %g5, %g7
|
|
cmp %g5, %g7
|
|
bne,pn %icc, __atomic_sub
|
|
membar #StoreLoad | #StoreStore
|
|
retl
|
|
sub %g7, %o0, %o0
|
|
.size __atomic_sub, .-__atomic_sub
|
|
|
|
.globl __atomic64_add
|
|
.type __atomic64_add,#function
|
|
__atomic64_add: /* %o0 = increment, %o1 = atomic_ptr */
|
|
ldx [%o1], %g5
|
|
add %g5, %o0, %g7
|
|
casx [%o1], %g5, %g7
|
|
cmp %g5, %g7
|
|
bne,pn %xcc, __atomic64_add
|
|
membar #StoreLoad | #StoreStore
|
|
retl
|
|
add %g7, %o0, %o0
|
|
.size __atomic64_add, .-__atomic64_add
|
|
|
|
.globl __atomic64_sub
|
|
.type __atomic64_sub,#function
|
|
__atomic64_sub: /* %o0 = increment, %o1 = atomic_ptr */
|
|
ldx [%o1], %g5
|
|
sub %g5, %o0, %g7
|
|
casx [%o1], %g5, %g7
|
|
cmp %g5, %g7
|
|
bne,pn %xcc, __atomic64_sub
|
|
membar #StoreLoad | #StoreStore
|
|
retl
|
|
sub %g7, %o0, %o0
|
|
.size __atomic64_sub, .-__atomic64_sub
|