From 0c3e87867faeb5fedd10ede031b2c5573c4154fa Mon Sep 17 00:00:00 2001 From: jhb Date: Mon, 12 Nov 2001 18:53:45 +0000 Subject: Use newer constraints for atomic_cmpset(). Requested by: bde --- sys/i386/include/atomic.h | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) (limited to 'sys/i386') diff --git a/sys/i386/include/atomic.h b/sys/i386/include/atomic.h index c3ad67a..0da8133 100644 --- a/sys/i386/include/atomic.h +++ b/sys/i386/include/atomic.h @@ -120,18 +120,17 @@ atomic_cmpset_int(volatile u_int *dst, u_int exp, u_int src) __asm __volatile( " pushfl ; " " cli ; " - " cmpl %1,%3 ; " + " cmpl %0,%2 ; " " jne 1f ; " - " movl %2,%3 ; " + " movl %1,%2 ; " "1: " " sete %%al; " " movzbl %%al,%0 ; " " popfl ; " "# atomic_cmpset_int" - : "=a" (res) /* 0 (result) */ - : "0" (exp), /* 1 */ - "r" (src), /* 2 */ - "m" (*(dst)) /* 3 */ + : "+a" (res) /* 0 (result) */ + : "r" (src), /* 1 */ + "m" (*(dst)) /* 2 */ : "memory"); return (res); @@ -144,15 +143,14 @@ atomic_cmpset_int(volatile u_int *dst, u_int exp, u_int src) __asm __volatile ( " " MPLOCKED " " - " cmpxchgl %2,%3 ; " + " cmpxchgl %1,%2 ; " " setz %%al ; " " movzbl %%al,%0 ; " "1: " "# atomic_cmpset_int" - : "=a" (res) /* 0 (result) */ - : "0" (exp), /* 1 */ - "r" (src), /* 2 */ - "m" (*(dst)) /* 3 */ + : "+a" (res) /* 0 (result) */ + : "r" (src), /* 1 */ + "m" (*(dst)) /* 2 */ : "memory"); return (res); -- cgit v1.1