diff options
Diffstat (limited to 'arch/frv/lib/atomic-ops.S')
-rw-r--r-- | arch/frv/lib/atomic-ops.S | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/arch/frv/lib/atomic-ops.S b/arch/frv/lib/atomic-ops.S deleted file mode 100644 index b7439a960b5b..000000000000 --- a/arch/frv/lib/atomic-ops.S +++ /dev/null @@ -1,62 +0,0 @@ -/* atomic-ops.S: kernel atomic operations - * - * For an explanation of how atomic ops work in this arch, see: - * Documentation/frv/atomic-ops.txt - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <asm/spr-regs.h> - - .text - .balign 4 - -############################################################################### -# -# uint32_t __xchg_32(uint32_t i, uint32_t *v) -# -############################################################################### - .globl __xchg_32 - .type __xchg_32,@function -__xchg_32: - or.p gr8,gr8,gr10 -0: - orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ - ckeq icc3,cc7 - ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ - orcr cc7,cc7,cc3 /* set CC3 to true */ - cst.p gr10,@(gr9,gr0) ,cc3,#1 - corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ - beq icc3,#0,0b - bralr - - .size __xchg_32, .-__xchg_32 - -############################################################################### -# -# uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new) -# -############################################################################### - .globl __cmpxchg_32 - .type __cmpxchg_32,@function -__cmpxchg_32: - or.p gr8,gr8,gr11 -0: - orcc gr0,gr0,gr0,icc3 - ckeq icc3,cc7 - ld.p @(gr11,gr0),gr8 - orcr cc7,cc7,cc3 - subcc gr8,gr9,gr7,icc0 - bnelr icc0,#0 - cst.p gr10,@(gr11,gr0) ,cc3,#1 - corcc gr29,gr29,gr0 ,cc3,#1 - beq icc3,#0,0b - bralr - - .size __cmpxchg_32, .-__cmpxchg_32 |