nsprpub/pr/src/md/unix/os_Linux_ia64.s@6474c204b198 (annotated)
nsprpub/pr/src/md/unix/os_Linux_ia64.s
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | // |
| michael@0 | 3 | // This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | // License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | // file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| michael@0 | 6 | |
| michael@0 | 7 | .text |
| michael@0 | 8 | |
| michael@0 | 9 | // PRInt32 _PR_ia64_AtomicIncrement(PRInt32 *val) |
| michael@0 | 10 | // |
| michael@0 | 11 | // Atomically increment the integer pointed to by 'val' and return |
| michael@0 | 12 | // the result of the increment. |
| michael@0 | 13 | // |
| michael@0 | 14 | .align 16 |
| michael@0 | 15 | .global _PR_ia64_AtomicIncrement# |
| michael@0 | 16 | .proc _PR_ia64_AtomicIncrement# |
| michael@0 | 17 | _PR_ia64_AtomicIncrement: |
| michael@0 | 18 | fetchadd4.acq r8 = [r32], 1 ;; |
| michael@0 | 19 | adds r8 = 1, r8 |
| michael@0 | 20 | br.ret.sptk.many b0 |
| michael@0 | 21 | .endp _PR_ia64_AtomicIncrement# |
| michael@0 | 22 | |
| michael@0 | 23 | // PRInt32 _PR_ia64_AtomicDecrement(PRInt32 *val) |
| michael@0 | 24 | // |
| michael@0 | 25 | // Atomically decrement the integer pointed to by 'val' and return |
| michael@0 | 26 | // the result of the decrement. |
| michael@0 | 27 | // |
| michael@0 | 28 | .align 16 |
| michael@0 | 29 | .global _PR_ia64_AtomicDecrement# |
| michael@0 | 30 | .proc _PR_ia64_AtomicDecrement# |
| michael@0 | 31 | _PR_ia64_AtomicDecrement: |
| michael@0 | 32 | fetchadd4.rel r8 = [r32], -1 ;; |
| michael@0 | 33 | adds r8 = -1, r8 |
| michael@0 | 34 | br.ret.sptk.many b0 |
| michael@0 | 35 | .endp _PR_ia64_AtomicDecrement# |
| michael@0 | 36 | |
| michael@0 | 37 | // PRInt32 _PR_ia64_AtomicAdd(PRInt32 *ptr, PRInt32 val) |
| michael@0 | 38 | // |
| michael@0 | 39 | // Atomically add 'val' to the integer pointed to by 'ptr' |
| michael@0 | 40 | // and return the result of the addition. |
| michael@0 | 41 | // |
| michael@0 | 42 | .align 16 |
| michael@0 | 43 | .global _PR_ia64_AtomicAdd# |
| michael@0 | 44 | .proc _PR_ia64_AtomicAdd# |
| michael@0 | 45 | _PR_ia64_AtomicAdd: |
| michael@0 | 46 | ld4 r15 = [r32] ;; |
| michael@0 | 47 | .L3: |
| michael@0 | 48 | mov r14 = r15 |
| michael@0 | 49 | mov ar.ccv = r15 |
| michael@0 | 50 | add r8 = r15, r33 ;; |
| michael@0 | 51 | cmpxchg4.acq r15 = [r32], r8, ar.ccv ;; |
| michael@0 | 52 | cmp4.ne p6, p7 = r15, r14 |
| michael@0 | 53 | (p6) br.cond.dptk .L3 |
| michael@0 | 54 | br.ret.sptk.many b0 |
| michael@0 | 55 | .endp _PR_ia64_AtomicAdd# |
| michael@0 | 56 | |
| michael@0 | 57 | // PRInt32 _PR_ia64_AtomicSet(PRInt32 *val, PRInt32 newval) |
| michael@0 | 58 | // |
| michael@0 | 59 | // Atomically set the integer pointed to by 'val' to the new |
| michael@0 | 60 | // value 'newval' and return the old value. |
| michael@0 | 61 | // |
| michael@0 | 62 | .align 16 |
| michael@0 | 63 | .global _PR_ia64_AtomicSet# |
| michael@0 | 64 | .proc _PR_ia64_AtomicSet# |
| michael@0 | 65 | _PR_ia64_AtomicSet: |
| michael@0 | 66 | xchg4 r8 = [r32], r33 |
| michael@0 | 67 | br.ret.sptk.many b0 |
| michael@0 | 68 | .endp _PR_ia64_AtomicSet# |
| michael@0 | 69 | |
| michael@0 | 70 | // Magic indicating no need for an executable stack |
| michael@0 | 71 | .section .note.GNU-stack, "", @progbits ; .previous |
