diff options
Diffstat (limited to 'pkg/atomicbitops/atomic_bitops_arm64.s')
-rwxr-xr-x | pkg/atomicbitops/atomic_bitops_arm64.s | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/pkg/atomicbitops/atomic_bitops_arm64.s b/pkg/atomicbitops/atomic_bitops_arm64.s deleted file mode 100755 index 97f8808c1..000000000 --- a/pkg/atomicbitops/atomic_bitops_arm64.s +++ /dev/null @@ -1,139 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// +build arm64 - -#include "textflag.h" - -TEXT ·AndUint32(SB),$0-12 - MOVD ptr+0(FP), R0 - MOVW val+8(FP), R1 -again: - LDAXRW (R0), R2 - ANDW R1, R2 - STLXRW R2, (R0), R3 - CBNZ R3, again - RET - -TEXT ·OrUint32(SB),$0-12 - MOVD ptr+0(FP), R0 - MOVW val+8(FP), R1 -again: - LDAXRW (R0), R2 - ORRW R1, R2 - STLXRW R2, (R0), R3 - CBNZ R3, again - RET - -TEXT ·XorUint32(SB),$0-12 - MOVD ptr+0(FP), R0 - MOVW val+8(FP), R1 -again: - LDAXRW (R0), R2 - EORW R1, R2 - STLXRW R2, (R0), R3 - CBNZ R3, again - RET - -TEXT ·CompareAndSwapUint32(SB),$0-20 - MOVD addr+0(FP), R0 - MOVW old+8(FP), R1 - MOVW new+12(FP), R2 - -again: - LDAXRW (R0), R3 - CMPW R1, R3 - BNE done - STLXRW R2, (R0), R4 - CBNZ R4, again -done: - MOVW R3, prev+16(FP) - RET - -TEXT ·AndUint64(SB),$0-16 - MOVD ptr+0(FP), R0 - MOVD val+8(FP), R1 -again: - LDAXR (R0), R2 - AND R1, R2 - STLXR R2, (R0), R3 - CBNZ R3, again - RET - -TEXT ·OrUint64(SB),$0-16 - MOVD ptr+0(FP), R0 - MOVD val+8(FP), R1 -again: - LDAXR (R0), R2 - ORR R1, R2 - STLXR R2, (R0), R3 - CBNZ R3, again - RET - -TEXT ·XorUint64(SB),$0-16 - MOVD ptr+0(FP), R0 - MOVD val+8(FP), R1 -again: - LDAXR (R0), R2 - EOR R1, R2 - STLXR R2, (R0), R3 - CBNZ R3, again - RET - -TEXT ·CompareAndSwapUint64(SB),$0-32 - MOVD addr+0(FP), R0 - MOVD old+8(FP), R1 - MOVD new+16(FP), R2 - -again: - LDAXR (R0), R3 - CMP R1, R3 - BNE done - STLXR R2, (R0), R4 - CBNZ R4, again -done: - MOVD R3, prev+24(FP) - RET - -TEXT ·IncUnlessZeroInt32(SB),NOSPLIT,$0-9 - MOVD addr+0(FP), R0 - -again: - LDAXRW (R0), R1 - CBZ R1, fail - ADDW $1, R1 - STLXRW R1, (R0), R2 - CBNZ R2, again - MOVW $1, R2 - MOVB R2, ret+8(FP) - RET -fail: - MOVB ZR, ret+8(FP) - RET - -TEXT ·DecUnlessOneInt32(SB),NOSPLIT,$0-9 - MOVD addr+0(FP), R0 - -again: - LDAXRW (R0), R1 - SUBSW $1, R1, R1 - BEQ fail - STLXRW R1, (R0), R2 - CBNZ R2, again - MOVW $1, R2 - MOVB R2, ret+8(FP) - RET -fail: - MOVB ZR, ret+8(FP) - RET |