69 lines
1.8 KiB
ArmAsm
69 lines
1.8 KiB
ArmAsm
# -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#
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# Based on the programming examples in The PowerPC Architecture:
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# A Specification for A New Family of RISC Processors, 2nd Ed.,
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# Book I, Section E.1, "Synchronization," pp. 249-256, May 1994.
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#
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.text
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#
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# PRInt32 __PR_DarwinPPC_AtomicIncrement(PRInt32 *val);
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#
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.align 2
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.globl __PR_DarwinPPC_AtomicIncrement
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.private_extern __PR_DarwinPPC_AtomicIncrement
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__PR_DarwinPPC_AtomicIncrement:
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lwarx r4,0,r3
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addi r0,r4,1
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stwcx. r0,0,r3
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bne- __PR_DarwinPPC_AtomicIncrement
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mr r3,r0
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blr
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#
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# PRInt32 __PR_DarwinPPC_AtomicDecrement(PRInt32 *val);
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#
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.align 2
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.globl __PR_DarwinPPC_AtomicDecrement
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.private_extern __PR_DarwinPPC_AtomicDecrement
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__PR_DarwinPPC_AtomicDecrement:
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lwarx r4,0,r3
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addi r0,r4,-1
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stwcx. r0,0,r3
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bne- __PR_DarwinPPC_AtomicDecrement
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mr r3,r0
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blr
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#
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# PRInt32 __PR_DarwinPPC_AtomicSet(PRInt32 *val, PRInt32 newval);
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#
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.align 2
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.globl __PR_DarwinPPC_AtomicSet
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.private_extern __PR_DarwinPPC_AtomicSet
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__PR_DarwinPPC_AtomicSet:
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lwarx r5,0,r3
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stwcx. r4,0,r3
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bne- __PR_DarwinPPC_AtomicSet
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mr r3,r5
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blr
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#
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# PRInt32 __PR_DarwinPPC_AtomicAdd(PRInt32 *ptr, PRInt32 val);
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#
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.align 2
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.globl __PR_DarwinPPC_AtomicAdd
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.private_extern __PR_DarwinPPC_AtomicAdd
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__PR_DarwinPPC_AtomicAdd:
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lwarx r5,0,r3
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add r0,r4,r5
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stwcx. r0,0,r3
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bne- __PR_DarwinPPC_AtomicAdd
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mr r3,r0
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blr
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