diff options
Diffstat (limited to 'nsprpub/pr/src/md/unix/os_Darwin_ppc.s')
| -rw-r--r-- | nsprpub/pr/src/md/unix/os_Darwin_ppc.s | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/unix/os_Darwin_ppc.s b/nsprpub/pr/src/md/unix/os_Darwin_ppc.s new file mode 100644 index 0000000000..8479dec01f --- /dev/null +++ b/nsprpub/pr/src/md/unix/os_Darwin_ppc.s @@ -0,0 +1,68 @@ +# -*- 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. +# + +.text + +# +# PRInt32 __PR_DarwinPPC_AtomicIncrement(PRInt32 *val); +# + .align 2 + .globl __PR_DarwinPPC_AtomicIncrement + .private_extern __PR_DarwinPPC_AtomicIncrement +__PR_DarwinPPC_AtomicIncrement: + lwarx r4,0,r3 + addi r0,r4,1 + stwcx. r0,0,r3 + bne- __PR_DarwinPPC_AtomicIncrement + mr r3,r0 + blr + +# +# PRInt32 __PR_DarwinPPC_AtomicDecrement(PRInt32 *val); +# + .align 2 + .globl __PR_DarwinPPC_AtomicDecrement + .private_extern __PR_DarwinPPC_AtomicDecrement +__PR_DarwinPPC_AtomicDecrement: + lwarx r4,0,r3 + addi r0,r4,-1 + stwcx. r0,0,r3 + bne- __PR_DarwinPPC_AtomicDecrement + mr r3,r0 + blr + +# +# PRInt32 __PR_DarwinPPC_AtomicSet(PRInt32 *val, PRInt32 newval); +# + .align 2 + .globl __PR_DarwinPPC_AtomicSet + .private_extern __PR_DarwinPPC_AtomicSet +__PR_DarwinPPC_AtomicSet: + lwarx r5,0,r3 + stwcx. r4,0,r3 + bne- __PR_DarwinPPC_AtomicSet + mr r3,r5 + blr + +# +# PRInt32 __PR_DarwinPPC_AtomicAdd(PRInt32 *ptr, PRInt32 val); +# + .align 2 + .globl __PR_DarwinPPC_AtomicAdd + .private_extern __PR_DarwinPPC_AtomicAdd +__PR_DarwinPPC_AtomicAdd: + lwarx r5,0,r3 + add r0,r4,r5 + stwcx. r0,0,r3 + bne- __PR_DarwinPPC_AtomicAdd + mr r3,r0 + blr |