diff options
Diffstat (limited to 'nsprpub/pr/src/md/unix/os_Linux_ppc.s')
| -rw-r--r-- | nsprpub/pr/src/md/unix/os_Linux_ppc.s | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/unix/os_Linux_ppc.s b/nsprpub/pr/src/md/unix/os_Linux_ppc.s new file mode 100644 index 0000000000..76da33bffc --- /dev/null +++ b/nsprpub/pr/src/md/unix/os_Linux_ppc.s @@ -0,0 +1,75 @@ +# -*- 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 |