зеркало из https://github.com/mozilla/pjs.git
Bugzilla Bug 63049: 64-bit Solaris does not need the libultrasparc4.so
(-f libatomic.so) filter library. Modified files: configure configure.in _solaris.h pr/src/md/unix/Makefile solaris.c. Added file: os_SunOS_sparcv9.s.
This commit is contained in:
wtc%netscape.com
Родитель
293528ba7d
Коммит
1c2201f31b
|
|
@ -4380,9 +4380,13 @@ EOF
|
|||
;;
|
||||
esac
|
||||
if test "$OS_TEST" = "sun4u"; then
|
||||
ULTRASPARC_LIBRARY=ultrasparc
|
||||
ULTRASPARC_FILTER_LIBRARY=libatomic.so
|
||||
DSO_LDOPTS="$DSO_LDOPTS -f "'$(ULTRASPARC_FILTER_LIBRARY)'
|
||||
# 64-bit Solaris requires SPARC V9 architecture, so the following
|
||||
# is not needed.
|
||||
if test -z "$USE_64"; then
|
||||
ULTRASPARC_LIBRARY=ultrasparc
|
||||
ULTRASPARC_FILTER_LIBRARY=libatomic.so
|
||||
DSO_LDOPTS="$DSO_LDOPTS -f "'$(ULTRASPARC_FILTER_LIBRARY)'
|
||||
fi
|
||||
fi
|
||||
;;
|
||||
|
||||
|
|
@ -4553,12 +4557,12 @@ esac
|
|||
if test -z "$SKIP_LIBRARY_CHECKS"; then
|
||||
|
||||
echo $ac_n "checking for dlopen""... $ac_c" 1>&6
|
||||
echo "configure:4557: checking for dlopen" >&5
|
||||
echo "configure:4561: checking for dlopen" >&5
|
||||
if eval "test \"`echo '$''{'ac_cv_func_dlopen'+set}'`\" = set"; then
|
||||
echo $ac_n "(cached) $ac_c" 1>&6
|
||||
else
|
||||
cat > conftest.$ac_ext <<EOF
|
||||
#line 4562 "configure"
|
||||
#line 4566 "configure"
|
||||
#include "confdefs.h"
|
||||
/* System header to define __stub macros and hopefully few prototypes,
|
||||
which can conflict with char dlopen(); below. */
|
||||
|
|
@ -4581,7 +4585,7 @@ dlopen();
|
|||
|
||||
; return 0; }
|
||||
EOF
|
||||
if { (eval echo configure:4585: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
|
||||
if { (eval echo configure:4589: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
|
||||
rm -rf conftest*
|
||||
eval "ac_cv_func_dlopen=yes"
|
||||
else
|
||||
|
|
@ -4600,7 +4604,7 @@ else
|
|||
echo "$ac_t""no" 1>&6
|
||||
|
||||
echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
|
||||
echo "configure:4604: checking for dlopen in -ldl" >&5
|
||||
echo "configure:4608: checking for dlopen in -ldl" >&5
|
||||
ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
|
||||
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
|
||||
echo $ac_n "(cached) $ac_c" 1>&6
|
||||
|
|
@ -4608,7 +4612,7 @@ else
|
|||
ac_save_LIBS="$LIBS"
|
||||
LIBS="-ldl $LIBS"
|
||||
cat > conftest.$ac_ext <<EOF
|
||||
#line 4612 "configure"
|
||||
#line 4616 "configure"
|
||||
#include "confdefs.h"
|
||||
/* Override any gcc2 internal prototype to avoid an error. */
|
||||
/* We use char because int might match the return type of a gcc2
|
||||
|
|
@ -4619,7 +4623,7 @@ int main() {
|
|||
dlopen()
|
||||
; return 0; }
|
||||
EOF
|
||||
if { (eval echo configure:4623: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
|
||||
if { (eval echo configure:4627: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
|
||||
rm -rf conftest*
|
||||
eval "ac_cv_lib_$ac_lib_var=yes"
|
||||
else
|
||||
|
|
@ -4647,13 +4651,13 @@ fi
|
|||
|
||||
if test $ac_cv_prog_gcc = yes; then
|
||||
echo $ac_n "checking whether ${CC-cc} needs -traditional""... $ac_c" 1>&6
|
||||
echo "configure:4651: checking whether ${CC-cc} needs -traditional" >&5
|
||||
echo "configure:4655: checking whether ${CC-cc} needs -traditional" >&5
|
||||
if eval "test \"`echo '$''{'ac_cv_prog_gcc_traditional'+set}'`\" = set"; then
|
||||
echo $ac_n "(cached) $ac_c" 1>&6
|
||||
else
|
||||
ac_pattern="Autoconf.*'x'"
|
||||
cat > conftest.$ac_ext <<EOF
|
||||
#line 4657 "configure"
|
||||
#line 4661 "configure"
|
||||
#include "confdefs.h"
|
||||
#include <sgtty.h>
|
||||
Autoconf TIOCGETP
|
||||
|
|
@ -4671,7 +4675,7 @@ rm -f conftest*
|
|||
|
||||
if test $ac_cv_prog_gcc_traditional = no; then
|
||||
cat > conftest.$ac_ext <<EOF
|
||||
#line 4675 "configure"
|
||||
#line 4679 "configure"
|
||||
#include "confdefs.h"
|
||||
#include <termio.h>
|
||||
Autoconf TCGETA
|
||||
|
|
@ -4695,12 +4699,12 @@ fi
|
|||
for ac_func in lchown strerror
|
||||
do
|
||||
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
|
||||
echo "configure:4699: checking for $ac_func" >&5
|
||||
echo "configure:4703: checking for $ac_func" >&5
|
||||
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
|
||||
echo $ac_n "(cached) $ac_c" 1>&6
|
||||
else
|
||||
cat > conftest.$ac_ext <<EOF
|
||||
#line 4704 "configure"
|
||||
#line 4708 "configure"
|
||||
#include "confdefs.h"
|
||||
/* System header to define __stub macros and hopefully few prototypes,
|
||||
which can conflict with char $ac_func(); below. */
|
||||
|
|
@ -4723,7 +4727,7 @@ $ac_func();
|
|||
|
||||
; return 0; }
|
||||
EOF
|
||||
if { (eval echo configure:4727: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
|
||||
if { (eval echo configure:4731: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
|
||||
rm -rf conftest*
|
||||
eval "ac_cv_func_$ac_func=yes"
|
||||
else
|
||||
|
|
@ -4754,7 +4758,7 @@ done
|
|||
|
||||
|
||||
echo $ac_n "checking for pthread_create in -lpthreads""... $ac_c" 1>&6
|
||||
echo "configure:4758: checking for pthread_create in -lpthreads" >&5
|
||||
echo "configure:4762: checking for pthread_create in -lpthreads" >&5
|
||||
echo "
|
||||
#include <pthread.h>
|
||||
void *foo(void *v) { int a = 1; }
|
||||
|
|
@ -4776,7 +4780,7 @@ echo "
|
|||
echo "$ac_t""no" 1>&6
|
||||
|
||||
echo $ac_n "checking for pthread_create in -lpthread""... $ac_c" 1>&6
|
||||
echo "configure:4780: checking for pthread_create in -lpthread" >&5
|
||||
echo "configure:4784: checking for pthread_create in -lpthread" >&5
|
||||
echo "
|
||||
#include <pthread.h>
|
||||
void *foo(void *v) { int a = 1; }
|
||||
|
|
@ -4798,7 +4802,7 @@ echo "
|
|||
echo "$ac_t""no" 1>&6
|
||||
|
||||
echo $ac_n "checking for pthread_create in -lc_r""... $ac_c" 1>&6
|
||||
echo "configure:4802: checking for pthread_create in -lc_r" >&5
|
||||
echo "configure:4806: checking for pthread_create in -lc_r" >&5
|
||||
echo "
|
||||
#include <pthread.h>
|
||||
void *foo(void *v) { int a = 1; }
|
||||
|
|
@ -4820,7 +4824,7 @@ echo "
|
|||
echo "$ac_t""no" 1>&6
|
||||
|
||||
echo $ac_n "checking for pthread_create in -lc""... $ac_c" 1>&6
|
||||
echo "configure:4824: checking for pthread_create in -lc" >&5
|
||||
echo "configure:4828: checking for pthread_create in -lc" >&5
|
||||
echo "
|
||||
#include <pthread.h>
|
||||
void *foo(void *v) { int a = 1; }
|
||||
|
|
@ -4970,7 +4974,7 @@ if test -n "$USE_PTHREADS"; then
|
|||
rm -f conftest*
|
||||
ac_cv_have_dash_pthread=no
|
||||
echo $ac_n "checking whether ${CC-cc} accepts -pthread""... $ac_c" 1>&6
|
||||
echo "configure:4974: checking whether ${CC-cc} accepts -pthread" >&5
|
||||
echo "configure:4978: checking whether ${CC-cc} accepts -pthread" >&5
|
||||
echo 'int main() { return 0; }' | cat > conftest.c
|
||||
${CC-cc} -pthread -o conftest conftest.c > conftest.out 2>&1
|
||||
if test $? -eq 0; then
|
||||
|
|
@ -4986,7 +4990,7 @@ echo "configure:4974: checking whether ${CC-cc} accepts -pthread" >&5
|
|||
ac_cv_have_dash_pthreads=no
|
||||
if test "$ac_cv_have_dash_pthread" = "no"; then
|
||||
echo $ac_n "checking whether ${CC-cc} accepts -pthreads""... $ac_c" 1>&6
|
||||
echo "configure:4990: checking whether ${CC-cc} accepts -pthreads" >&5
|
||||
echo "configure:4994: checking whether ${CC-cc} accepts -pthreads" >&5
|
||||
echo 'int main() { return 0; }' | cat > conftest.c
|
||||
${CC-cc} -pthreads -o conftest conftest.c > conftest.out 2>&1
|
||||
if test $? -eq 0; then
|
||||
|
|
@ -5204,7 +5208,9 @@ EOF
|
|||
PR_MD_ASFILES=os_SunOS_x86.s
|
||||
else
|
||||
PR_MD_ASFILES=os_SunOS.s
|
||||
if test -z "$USE_64"; then
|
||||
if test -n "$USE_64"; then
|
||||
PR_MD_ASFILES="$PR_MD_ASFILES os_SunOS_sparcv9.s"
|
||||
else
|
||||
PR_MD_ASFILES="$PR_MD_ASFILES os_SunOS_32.s"
|
||||
fi
|
||||
fi
|
||||
|
|
|
|||
|
|
@ -1597,9 +1597,13 @@ mips-sony-newsos*)
|
|||
;;
|
||||
esac
|
||||
if test "$OS_TEST" = "sun4u"; then
|
||||
ULTRASPARC_LIBRARY=ultrasparc
|
||||
ULTRASPARC_FILTER_LIBRARY=libatomic.so
|
||||
DSO_LDOPTS="$DSO_LDOPTS -f "'$(ULTRASPARC_FILTER_LIBRARY)'
|
||||
# 64-bit Solaris requires SPARC V9 architecture, so the following
|
||||
# is not needed.
|
||||
if test -z "$USE_64"; then
|
||||
ULTRASPARC_LIBRARY=ultrasparc
|
||||
ULTRASPARC_FILTER_LIBRARY=libatomic.so
|
||||
DSO_LDOPTS="$DSO_LDOPTS -f "'$(ULTRASPARC_FILTER_LIBRARY)'
|
||||
fi
|
||||
fi
|
||||
;;
|
||||
|
||||
|
|
@ -2081,7 +2085,9 @@ case "$target" in
|
|||
PR_MD_ASFILES=os_SunOS_x86.s
|
||||
else
|
||||
PR_MD_ASFILES=os_SunOS.s
|
||||
if test -z "$USE_64"; then
|
||||
if test -n "$USE_64"; then
|
||||
PR_MD_ASFILES="$PR_MD_ASFILES os_SunOS_sparcv9.s"
|
||||
else
|
||||
PR_MD_ASFILES="$PR_MD_ASFILES os_SunOS_32.s"
|
||||
fi
|
||||
fi
|
||||
|
|
|
|||
|
|
@ -70,8 +70,10 @@
|
|||
* version uses a global mutex_t to implement the atomic routines
|
||||
* in solaris.c, which is actually equivalent to the default
|
||||
* implementation.
|
||||
*
|
||||
* 64-bit Solaris requires sparc v9, which has atomic instructions.
|
||||
*/
|
||||
#if defined(i386) || defined(_PR_GLOBAL_THREADS_ONLY)
|
||||
#if defined(i386) || defined(_PR_GLOBAL_THREADS_ONLY) || defined(IS_64)
|
||||
#define _PR_HAVE_ATOMIC_OPS
|
||||
#endif
|
||||
|
||||
|
|
|
|||
|
|
@ -66,13 +66,18 @@ TARGETS = $(OBJS)
|
|||
ifeq ($(OS_ARCH),SunOS)
|
||||
ifneq ($(OS_RELEASE),4.1.3_U1)
|
||||
ifeq ($(OS_TEST),sun4u)
|
||||
ifdef USE_64
|
||||
ULTRASPARC_ASFILES = os_SunOS_sparcv9.s
|
||||
ULTRASPARC_ASOBJS = $(addprefix $(OBJDIR)/,$(ULTRASPARC_ASFILES:.s=.$(OBJ_SUFFIX)))
|
||||
else
|
||||
LIBRARY_NAME = $(ULTRASPARC_LIBRARY)
|
||||
LIBRARY_VERSION = $(MOD_MAJOR_VERSION)
|
||||
ULTRASPARC_ASFILES = os_$(OS_ARCH)_ultrasparc.s
|
||||
ULTRASPARC_ASFILES = os_SunOS_ultrasparc.s
|
||||
ULTRASPARC_ASOBJS = $(addprefix $(OBJDIR)/,$(ULTRASPARC_ASFILES:.s=.$(OBJ_SUFFIX)))
|
||||
TARGETS += $(ULTRASPARC_ASOBJS) $(SHARED_LIBRARY)
|
||||
RELEASE_LIBS = $(SHARED_LIBRARY)
|
||||
endif
|
||||
endif
|
||||
endif
|
||||
endif
|
||||
|
||||
|
|
@ -87,19 +92,22 @@ export:: $(TARGETS)
|
|||
ifeq ($(OS_ARCH),SunOS)
|
||||
ifneq ($(OS_RELEASE),4.1.3_U1)
|
||||
ifeq ($(OS_TEST),sun4u)
|
||||
$(SHARED_LIBRARY): $(ULTRASPARC_ASOBJS)
|
||||
$(LD) -G -z text -o $@ $(ULTRASPARC_ASOBJS)
|
||||
$(INSTALL) -m 444 $(SHARED_LIBRARY) $(dist_libdir)
|
||||
|
||||
ifdef USE_64
|
||||
$(ULTRASPARC_ASOBJS): $(ULTRASPARC_ASFILES)
|
||||
ifeq ($(USE_64),1)
|
||||
/usr/ccs/bin/as -o $@ -K PIC -P -D_ASM -D__STDC__=0 -xarch=v9 $<
|
||||
else
|
||||
$(SHARED_LIBRARY): $(ULTRASPARC_ASOBJS)
|
||||
$(LD) -G -z text -o $@ $(ULTRASPARC_ASOBJS)
|
||||
$(INSTALL) -m 444 $@ $(dist_libdir)
|
||||
|
||||
$(ULTRASPARC_ASOBJS): $(ULTRASPARC_ASFILES)
|
||||
/usr/ccs/bin/as -o $@ -K PIC -P -D_ASM -D__STDC__=0 -xarch=v8plus $<
|
||||
endif
|
||||
|
||||
clean::
|
||||
rm -rf $(ULTRASPARC_ASOBJS)
|
||||
endif
|
||||
|
||||
endif
|
||||
endif
|
||||
endif
|
||||
|
|
|
|||
|
|
@ -0,0 +1,201 @@
|
|||
! -*- 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) 1998-2000 Netscape Communications Corporation. All
|
||||
! Rights Reserved.
|
||||
!
|
||||
! Contributor(s):
|
||||
!
|
||||
! 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.
|
||||
!
|
||||
|
||||
!
|
||||
! atomic increment, decrement and swap routines for V8+ sparc (ultrasparc)
|
||||
! using CAS (compare-and-swap) atomic instructions
|
||||
!
|
||||
! this MUST be compiled with an ultrasparc-aware assembler
|
||||
!
|
||||
! standard asm linkage macros; this module must be compiled
|
||||
! with the -P option (use C preprocessor)
|
||||
|
||||
#include <sys/asm_linkage.h>
|
||||
|
||||
! ======================================================================
|
||||
!
|
||||
! Perform the sequence a = a + 1 atomically with respect to other
|
||||
! fetch-and-adds to location a in a wait-free fashion.
|
||||
!
|
||||
! usage : val = PR_AtomicIncrement(address)
|
||||
! return: current value (you'd think this would be old val)
|
||||
!
|
||||
! -----------------------
|
||||
! Note on REGISTER USAGE:
|
||||
! as this is a LEAF procedure, a new stack frame is not created;
|
||||
! we use the caller's stack frame so what would normally be %i (input)
|
||||
! registers are actually %o (output registers). Also, we must not
|
||||
! overwrite the contents of %l (local) registers as they are not
|
||||
! assumed to be volatile during calls.
|
||||
!
|
||||
! So, the registers used are:
|
||||
! %o0 [input] - the address of the value to increment
|
||||
! %o1 [local] - work register
|
||||
! %o2 [local] - work register
|
||||
! %o3 [local] - work register
|
||||
! -----------------------
|
||||
|
||||
ENTRY(_MD_AtomicIncrement) ! standard assembler/ELF prologue
|
||||
|
||||
retryAI:
|
||||
ld [%o0], %o2 ! set o2 to the current value
|
||||
add %o2, 0x1, %o3 ! calc the new value
|
||||
mov %o3, %o1 ! save the return value
|
||||
cas [%o0], %o2, %o3 ! atomically set if o0 hasn't changed
|
||||
cmp %o2, %o3 ! see if we set the value
|
||||
bne retryAI ! if not, try again
|
||||
nop ! empty out the branch pipeline
|
||||
retl ! return back to the caller
|
||||
mov %o1, %o0 ! set the return code to the new value
|
||||
|
||||
SET_SIZE(_MD_AtomicIncrement) ! standard assembler/ELF epilogue
|
||||
|
||||
!
|
||||
! end
|
||||
!
|
||||
! ======================================================================
|
||||
!
|
||||
|
||||
! ======================================================================
|
||||
!
|
||||
! Perform the sequence a = a - 1 atomically with respect to other
|
||||
! fetch-and-decs to location a in a wait-free fashion.
|
||||
!
|
||||
! usage : val = PR_AtomicDecrement(address)
|
||||
! return: current value (you'd think this would be old val)
|
||||
!
|
||||
! -----------------------
|
||||
! Note on REGISTER USAGE:
|
||||
! as this is a LEAF procedure, a new stack frame is not created;
|
||||
! we use the caller's stack frame so what would normally be %i (input)
|
||||
! registers are actually %o (output registers). Also, we must not
|
||||
! overwrite the contents of %l (local) registers as they are not
|
||||
! assumed to be volatile during calls.
|
||||
!
|
||||
! So, the registers used are:
|
||||
! %o0 [input] - the address of the value to increment
|
||||
! %o1 [local] - work register
|
||||
! %o2 [local] - work register
|
||||
! %o3 [local] - work register
|
||||
! -----------------------
|
||||
|
||||
ENTRY(_MD_AtomicDecrement) ! standard assembler/ELF prologue
|
||||
|
||||
retryAD:
|
||||
ld [%o0], %o2 ! set o2 to the current value
|
||||
sub %o2, 0x1, %o3 ! calc the new value
|
||||
mov %o3, %o1 ! save the return value
|
||||
cas [%o0], %o2, %o3 ! atomically set if o0 hasn't changed
|
||||
cmp %o2, %o3 ! see if we set the value
|
||||
bne retryAD ! if not, try again
|
||||
nop ! empty out the branch pipeline
|
||||
retl ! return back to the caller
|
||||
mov %o1, %o0 ! set the return code to the new value
|
||||
|
||||
SET_SIZE(_MD_AtomicDecrement) ! standard assembler/ELF epilogue
|
||||
|
||||
!
|
||||
! end
|
||||
!
|
||||
! ======================================================================
|
||||
!
|
||||
|
||||
! ======================================================================
|
||||
!
|
||||
! Perform the sequence a = b atomically with respect to other
|
||||
! fetch-and-stores to location a in a wait-free fashion.
|
||||
!
|
||||
! usage : old_val = PR_AtomicSet(address, newval)
|
||||
!
|
||||
! -----------------------
|
||||
! Note on REGISTER USAGE:
|
||||
! as this is a LEAF procedure, a new stack frame is not created;
|
||||
! we use the caller's stack frame so what would normally be %i (input)
|
||||
! registers are actually %o (output registers). Also, we must not
|
||||
! overwrite the contents of %l (local) registers as they are not
|
||||
! assumed to be volatile during calls.
|
||||
!
|
||||
! So, the registers used are:
|
||||
! %o0 [input] - the address of the value to increment
|
||||
! %o1 [input] - the new value to set for [%o0]
|
||||
! %o2 [local] - work register
|
||||
! %o3 [local] - work register
|
||||
! -----------------------
|
||||
|
||||
ENTRY(_MD_AtomicSet) ! standard assembler/ELF prologue
|
||||
|
||||
retryAS:
|
||||
ld [%o0], %o2 ! set o2 to the current value
|
||||
mov %o1, %o3 ! set up the new value
|
||||
cas [%o0], %o2, %o3 ! atomically set if o0 hasn't changed
|
||||
cmp %o2, %o3 ! see if we set the value
|
||||
bne retryAS ! if not, try again
|
||||
nop ! empty out the branch pipeline
|
||||
retl ! return back to the caller
|
||||
mov %o3, %o0 ! set the return code to the prev value
|
||||
|
||||
SET_SIZE(_MD_AtomicSet) ! standard assembler/ELF epilogue
|
||||
|
||||
!
|
||||
! end
|
||||
!
|
||||
! ======================================================================
|
||||
!
|
||||
|
||||
! ======================================================================
|
||||
!
|
||||
! Perform the sequence a = a + b atomically with respect to other
|
||||
! fetch-and-adds to location a in a wait-free fashion.
|
||||
!
|
||||
! usage : newval = PR_AtomicAdd(address, val)
|
||||
! return: the value after addition
|
||||
!
|
||||
ENTRY(_MD_AtomicAdd) ! standard assembler/ELF prologue
|
||||
|
||||
retryAA:
|
||||
ld [%o0], %o2 ! set o2 to the current value
|
||||
add %o2, %o1, %o3 ! calc the new value
|
||||
mov %o3, %o4 ! save the return value
|
||||
cas [%o0], %o2, %o3 ! atomically set if o0 hasn't changed
|
||||
cmp %o2, %o3 ! see if we set the value
|
||||
bne retryAA ! if not, try again
|
||||
nop ! empty out the branch pipeline
|
||||
retl ! return back to the caller
|
||||
mov %o4, %o0 ! set the return code to the new value
|
||||
|
||||
SET_SIZE(_MD_AtomicAdd) ! standard assembler/ELF epilogue
|
||||
|
||||
!
|
||||
! end
|
||||
!
|
||||
|
|
@ -85,7 +85,7 @@ PRWord *_MD_HomeGCRegisters(PRThread *t, PRIntn isCurrent, PRIntn *np)
|
|||
}
|
||||
#endif /* _PR_PTHREADS */
|
||||
|
||||
#if !defined(i386)
|
||||
#if !defined(i386) && !defined(IS_64)
|
||||
#if defined(_PR_HAVE_ATOMIC_OPS)
|
||||
/* NOTE:
|
||||
* SPARC v9 (Ultras) do have an atomic test-and-set operation. But
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче