mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Adin Scannell
142 lines
3.2 KiB
ArmAsm
142 lines
3.2 KiB
ArmAsm
// Copyright 2019 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build arm64
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#include "textflag.h"
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TEXT ·andUint32(SB),NOSPLIT,$0-12
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MOVD addr+0(FP), R0
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MOVW val+8(FP), R1
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MOVBU ·arm64HasATOMICS(SB), R4
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CBZ R4, load_store_loop
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MVN R1, R2
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LDCLRALW R2, (R0), R3
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RET
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load_store_loop:
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LDAXRW (R0), R2
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ANDW R1, R2
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STLXRW R2, (R0), R3
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CBNZ R3, load_store_loop
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RET
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TEXT ·orUint32(SB),NOSPLIT,$0-12
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MOVD addr+0(FP), R0
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MOVW val+8(FP), R1
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MOVBU ·arm64HasATOMICS(SB), R4
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CBZ R4, load_store_loop
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LDORALW R1, (R0), R2
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RET
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load_store_loop:
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LDAXRW (R0), R2
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ORRW R1, R2
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STLXRW R2, (R0), R3
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CBNZ R3, load_store_loop
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RET
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TEXT ·xorUint32(SB),NOSPLIT,$0-12
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MOVD addr+0(FP), R0
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MOVW val+8(FP), R1
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MOVBU ·arm64HasATOMICS(SB), R4
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CBZ R4, load_store_loop
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LDEORALW R1, (R0), R2
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RET
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load_store_loop:
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LDAXRW (R0), R2
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EORW R1, R2
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STLXRW R2, (R0), R3
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CBNZ R3, load_store_loop
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RET
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TEXT ·compareAndSwapUint32(SB),NOSPLIT,$0-20
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MOVD addr+0(FP), R0
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MOVW old+8(FP), R1
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MOVW new+12(FP), R2
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MOVBU ·arm64HasATOMICS(SB), R4
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CBZ R4, load_store_loop
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CASALW R1, (R0), R2
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MOVW R1, ret+16(FP)
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RET
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load_store_loop:
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LDAXRW (R0), R3
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CMPW R1, R3
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BNE ok
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STLXRW R2, (R0), R4
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CBNZ R4, load_store_loop
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ok:
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MOVW R3, ret+16(FP)
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RET
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TEXT ·andUint64(SB),NOSPLIT,$0-16
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MOVD addr+0(FP), R0
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MOVD val+8(FP), R1
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MOVBU ·arm64HasATOMICS(SB), R4
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CBZ R4, load_store_loop
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MVN R1, R2
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LDCLRALD R2, (R0), R3
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RET
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load_store_loop:
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LDAXR (R0), R2
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AND R1, R2
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STLXR R2, (R0), R3
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CBNZ R3, load_store_loop
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RET
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TEXT ·orUint64(SB),NOSPLIT,$0-16
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MOVD addr+0(FP), R0
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MOVD val+8(FP), R1
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MOVBU ·arm64HasATOMICS(SB), R4
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CBZ R4, load_store_loop
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LDORALD R1, (R0), R2
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RET
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load_store_loop:
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LDAXR (R0), R2
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ORR R1, R2
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STLXR R2, (R0), R3
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CBNZ R3, load_store_loop
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RET
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TEXT ·xorUint64(SB),NOSPLIT,$0-16
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MOVD addr+0(FP), R0
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MOVD val+8(FP), R1
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MOVBU ·arm64HasATOMICS(SB), R4
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CBZ R4, load_store_loop
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LDEORALD R1, (R0), R2
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RET
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load_store_loop:
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LDAXR (R0), R2
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EOR R1, R2
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STLXR R2, (R0), R3
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CBNZ R3, load_store_loop
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RET
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TEXT ·compareAndSwapUint64(SB),NOSPLIT,$0-32
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MOVD addr+0(FP), R0
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MOVD old+8(FP), R1
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MOVD new+16(FP), R2
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MOVBU ·arm64HasATOMICS(SB), R4
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CBZ R4, load_store_loop
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CASALD R1, (R0), R2
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MOVD R1, ret+24(FP)
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RET
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load_store_loop:
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LDAXR (R0), R3
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CMP R1, R3
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BNE ok
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STLXR R2, (R0), R4
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CBNZ R4, load_store_loop
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ok:
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MOVD R3, ret+24(FP)
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RET
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