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