Module Name: src
Committed By: riastradh
Date: Sun Dec 19 11:04:28 UTC 2021
Modified Files:
src/sys/external/bsd/drm2/include/linux: atomic.h
Log Message:
cmpxchg
To generate a diff of this commit:
cvs rdiff -u -r1.34 -r1.35 src/sys/external/bsd/drm2/include/linux/atomic.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/drm2/include/linux/atomic.h
diff -u src/sys/external/bsd/drm2/include/linux/atomic.h:1.34 src/sys/external/bsd/drm2/include/linux/atomic.h:1.35
--- src/sys/external/bsd/drm2/include/linux/atomic.h:1.34 Sun Dec 19 11:03:01 2021
+++ src/sys/external/bsd/drm2/include/linux/atomic.h Sun Dec 19 11:04:28 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: atomic.h,v 1.34 2021/12/19 11:03:01 riastradh Exp $ */
+/* $NetBSD: atomic.h,v 1.35 2021/12/19 11:04:28 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -43,6 +43,11 @@
: sizeof(*(P)) == 8 ? atomic_swap_64((volatile uint64_t *)P, V) \
: (__builtin_abort(), 0))
+#define cmpxchg(P, O, N) \
+ (sizeof(*(P)) == 4 ? atomic_cas_32((volatile uint32_t *)P, O, N) \
+ : sizeof(*(P)) == 8 ? atomic_cas_64((volatile uint64_t *)P, O, N) \
+ : (__builtin_abort(), 0))
+
/*
* atomic (u)int operations
*
