From 53e237906dc72495bca080ddd4041cad2b939f06 Mon Sep 17 00:00:00 2001 From: "joshmoz%gmail.com" Date: Tue, 10 Jan 2006 22:20:45 +0000 Subject: atomic ops for Intel Macs. b=322287 r=mento sr=wtc --- configure.in | 5 +- pr/include/md/_darwin.h | 17 +++++-- pr/src/md/unix/os_Darwin_x86.s | 105 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 121 insertions(+), 6 deletions(-) create mode 100644 pr/src/md/unix/os_Darwin_x86.s diff --git a/configure.in b/configure.in index 534f24f7..bf57c340 100644 --- a/configure.in +++ b/configure.in @@ -931,10 +931,12 @@ case "$target" in i*86*) AC_DEFINE(i386) CPU_ARCH=i386 + PR_MD_ASFILES=os_Darwin_x86.s ;; *) AC_DEFINE(ppc) CPU_ARCH=ppc + PR_MD_ASFILES=os_Darwin_ppc.s ;; esac DSO_CFLAGS=-fPIC @@ -947,9 +949,6 @@ case "$target" in USE_PTHREADS=1 MDCPUCFG_H=_darwin.cfg PR_MD_CSRCS=darwin.c - if test "$CPU_ARCH" = "ppc"; then - PR_MD_ASFILES=os_Darwin_ppc.s - fi # Add Mac OS X support for loading CFM & CFBundle plugins if test -f /System/Library/Frameworks/Carbon.framework/Carbon; then diff --git a/pr/include/md/_darwin.h b/pr/include/md/_darwin.h index 6f409e36..f4a1a4e0 100644 --- a/pr/include/md/_darwin.h +++ b/pr/include/md/_darwin.h @@ -48,9 +48,9 @@ #define PR_LINKER_ARCH "darwin" #define _PR_SI_SYSNAME "DARWIN" -#ifdef i386 +#ifdef __i386__ #define _PR_SI_ARCHITECTURE "x86" -#else +#elif defined(__ppc__) #define _PR_SI_ARCHITECTURE "ppc" #endif #define PR_DLL_SUFFIX ".dylib" @@ -113,7 +113,18 @@ extern PRInt32 _PR_DarwinPPC_AtomicSet(PRInt32 *val, PRInt32 newval); #define _MD_ATOMIC_SET(val, newval) _PR_DarwinPPC_AtomicSet(val, newval) extern PRInt32 _PR_DarwinPPC_AtomicAdd(PRInt32 *ptr, PRInt32 val); #define _MD_ATOMIC_ADD(ptr, val) _PR_DarwinPPC_AtomicAdd(ptr, val) -#endif /* __ppc__ */ +#elif defined(__i386__) +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +extern PRInt32 _PR_Darwin_x86_AtomicIncrement(PRInt32 *val); +#define _MD_ATOMIC_INCREMENT(val) _PR_Darwin_x86_AtomicIncrement(val) +extern PRInt32 _PR_Darwin_x86_AtomicDecrement(PRInt32 *val); +#define _MD_ATOMIC_DECREMENT(val) _PR_Darwin_x86_AtomicDecrement(val) +extern PRInt32 _PR_Darwin_x86_AtomicSet(PRInt32 *val, PRInt32 newval); +#define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_AtomicSet(val, newval) +extern PRInt32 _PR_Darwin_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val); +#define _MD_ATOMIC_ADD(ptr, val) _PR_Darwin_x86_AtomicAdd(ptr, val) +#endif /* __i386__ */ #define USE_SETJMP 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 +# +# 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 -- cgit v1.2.1