diff options
Diffstat (limited to 'pr/src/md/unix/os_Darwin_x86.s')
-rw-r--r-- | pr/src/md/unix/os_Darwin_x86.s | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/pr/src/md/unix/os_Darwin_x86.s b/pr/src/md/unix/os_Darwin_x86.s new file mode 100644 index 00000000..d0042613 --- /dev/null +++ b/pr/src/md/unix/os_Darwin_x86.s @@ -0,0 +1,105 @@ +# -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- +# +# The contents of this file are subject to the Mozilla Public +# License Version 1.1 (the "License"); you may not use this file +# except in compliance with the License. You may obtain a copy of +# the License at http://www.mozilla.org/MPL/ +# +# Software distributed under the License is distributed on an "AS +# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +# implied. See the License for the specific language governing +# rights and limitations under the License. +# +# The Original Code is the Netscape Portable Runtime (NSPR). +# +# The Initial Developer of the Original Code is Netscape +# Communications Corporation. Portions created by Netscape are +# Copyright (C) 2003 Netscape Communications Corporation. All +# Rights Reserved. +# +# Contributor(s): +# Josh Aas <josh@mozilla.com> +# +# Alternatively, the contents of this file may be used under the +# terms of the GNU General Public License Version 2 or later (the +# "GPL"), in which case the provisions of the GPL are applicable +# instead of those above. If you wish to allow use of your +# version of this file only under the terms of the GPL and not to +# allow others to use your version of this file under the MPL, +# indicate your decision by deleting the provisions above and +# replace them with the notice and other provisions required by +# the GPL. If you do not delete the provisions above, a recipient +# may use your version of this file under either the MPL or the +# GPL. +# + +# +# Based on os_Linux_x86.s +# + +# +# PRInt32 __PR_Darwin_x86_AtomicIncrement(PRInt32 *val); +# +# Atomically increment the integer pointed to by 'val' and return +# the result of the increment. +# + .text + .globl __PR_Darwin_x86_AtomicIncrement + .align 4 +__PR_Darwin_x86_AtomicIncrement: + movl 4(%esp), %ecx + movl $1, %eax + lock + xaddl %eax, (%ecx) + incl %eax + ret + +# +# PRInt32 __PR_Darwin_x86_AtomicDecrement(PRInt32 *val); +# +# Atomically decrement the integer pointed to by 'val' and return +# the result of the decrement. +# + .text + .globl __PR_Darwin_x86_AtomicDecrement + .align 4 +__PR_Darwin_x86_AtomicDecrement: + movl 4(%esp), %ecx + movl $-1, %eax + lock + xaddl %eax, (%ecx) + decl %eax + ret + +# +# PRInt32 __PR_Darwin_x86_AtomicSet(PRInt32 *val, PRInt32 newval); +# +# Atomically set the integer pointed to by 'val' to the new +# value 'newval' and return the old value. +# + .text + .globl __PR_Darwin_x86_AtomicSet + .align 4 +__PR_Darwin_x86_AtomicSet: + movl 4(%esp), %ecx + movl 8(%esp), %eax + xchgl %eax, (%ecx) + ret + +# +# PRInt32 __PR_Darwin_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val); +# +# Atomically add 'val' to the integer pointed to by 'ptr' +# and return the result of the addition. +# + .text + .globl __PR_Darwin_x86_AtomicAdd + .align 4 +__PR_Darwin_x86_AtomicAdd: + movl 4(%esp), %ecx + movl 8(%esp), %eax + movl %eax, %edx + lock + xaddl %eax, (%ecx) + addl %edx, %eax + ret |