# -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
#
file, You can obtain one at
http://mozilla.org/MPL/2.0/.
#
# Based on the programming examples in The PowerPC Architecture:
# A Specification for A New Family of RISC Processors, 2nd Ed.,
# Book I,
Section E.1,
"Synchronization," pp. 249-256, May 1994.
#
.
section ".text"
#
# PRInt32 _PR_ppc_AtomicIncrement(PRInt32 *val);
#
.
align 2
.globl _PR_ppc_AtomicIncrement
.type _PR_ppc_AtomicIncrement,@function
_PR_ppc_AtomicIncrement:
.Lfd1: lwarx 4,0,3
addi 0,4,1
stwcx. 0,0,3
bne- .Lfd1
mr 3,0
blr
.Lfe1: .
size _PR_ppc_AtomicIncrement,.Lfe1-_PR_ppc_AtomicIncrement
#
# PRInt32 _PR_ppc_AtomicDecrement(PRInt32 *val);
#
.
align 2
.globl _PR_ppc_AtomicDecrement
.type _PR_ppc_AtomicDecrement,@function
_PR_ppc_AtomicDecrement:
.Lfd2: lwarx 4,0,3
addi 0,4,-1
stwcx. 0,0,3
bne- .Lfd2
mr 3,0
blr
.Lfe2: .
size _PR_ppc_AtomicDecrement,.Lfe2-_PR_ppc_AtomicDecrement
#
# PRInt32 _PR_ppc_AtomicSet(PRInt32 *val, PRInt32 newval);
#
.
align 2
.globl _PR_ppc_AtomicSet
.type _PR_ppc_AtomicSet,@function
_PR_ppc_AtomicSet:
.Lfd3: lwarx 5,0,3
stwcx. 4,0,3
bne- .Lfd3
mr 3,5
blr
.Lfe3: .
size _PR_ppc_AtomicSet,.Lfe3-_PR_ppc_AtomicSet
#
# PRInt32 _PR_ppc_AtomicAdd(PRInt32 *ptr, PRInt32 val);
#
.
align 2
.globl _PR_ppc_AtomicAdd
.type _PR_ppc_AtomicAdd,@function
_PR_ppc_AtomicAdd:
.Lfd4: lwarx 5,0,3
add 0,4,5
stwcx. 0,0,3
bne- .Lfd4
mr 3,0
blr
.Lfe4: .
size _PR_ppc_AtomicAdd,.Lfe4-_PR_ppc_AtomicAdd
# Magic indicating no need for an executable stack
.
section .note.GNU-stack,
"", @progbits
