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Diffstat (limited to 'pr/src/md/unix/os_Linux_x86_64.s')
-rw-r--r-- | pr/src/md/unix/os_Linux_x86_64.s | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/pr/src/md/unix/os_Linux_x86_64.s b/pr/src/md/unix/os_Linux_x86_64.s new file mode 100644 index 0000000..c16eaa6 --- /dev/null +++ b/pr/src/md/unix/os_Linux_x86_64.s @@ -0,0 +1,106 @@ +// -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- +// +// ***** BEGIN LICENSE BLOCK ***** +// Version: MPL 1.1/GPL 2.0/LGPL 2.1 +// +// 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 the Initial Developer are Copyright (C) 2004 +// the Initial Developer. All Rights Reserved. +// +// Contributor(s): +// +// Alternatively, the contents of this file may be used under the terms of +// either the GNU General Public License Version 2 or later (the "GPL"), or +// the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), +// in which case the provisions of the GPL or the LGPL are applicable instead +// of those above. If you wish to allow use of your version of this file only +// under the terms of either the GPL or the LGPL, and not to allow others to +// use your version of this file under the terms of the MPL, indicate your +// decision by deleting the provisions above and replace them with the notice +// and other provisions required by the GPL or the LGPL. If you do not delete +// the provisions above, a recipient may use your version of this file under +// the terms of any one of the MPL, the GPL or the LGPL. +// +// ***** END LICENSE BLOCK ***** + +// PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val) +// +// Atomically increment the integer pointed to by 'val' and return +// the result of the increment. +// + .text + .globl _PR_x86_64_AtomicIncrement + .type _PR_x86_64_AtomicIncrement, @function + .align 4 +_PR_x86_64_AtomicIncrement: + movl $1, %eax + lock + xaddl %eax, (%rdi) + incl %eax + ret + .size _PR_x86_64_AtomicIncrement, .-_PR_x86_64_AtomicIncrement + +// PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val) +// +// Atomically decrement the integer pointed to by 'val' and return +// the result of the decrement. +// + .text + .globl _PR_x86_64_AtomicDecrement + .type _PR_x86_64_AtomicDecrement, @function + .align 4 +_PR_x86_64_AtomicDecrement: + movl $-1, %eax + lock + xaddl %eax, (%rdi) + decl %eax + ret + .size _PR_x86_64_AtomicDecrement, .-_PR_x86_64_AtomicDecrement + +// PRInt32 _PR_x86_64_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_x86_64_AtomicSet + .type _PR_x86_64_AtomicSet, @function + .align 4 +_PR_x86_64_AtomicSet: + movl %esi, %eax + xchgl %eax, (%rdi) + ret + .size _PR_x86_64_AtomicSet, .-_PR_x86_64_AtomicSet + +// PRInt32 _PR_x86_64_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_x86_64_AtomicAdd + .type _PR_x86_64_AtomicAdd, @function + .align 4 +_PR_x86_64_AtomicAdd: + movl %esi, %eax + lock + xaddl %eax, (%rdi) + addl %esi, %eax + ret + .size _PR_x86_64_AtomicAdd, .-_PR_x86_64_AtomicAdd + +// Magic indicating no need for an executable stack +.section .note.GNU-stack, "", @progbits ; .previous |