Move futex support code from <arch>/support.s into linux compat directory.

Implement all futex atomic operations in assembler to not depend on the
fuword() that does not allow to distinguish between -1 and failure return.
Correctly return 0 from atomic operations on success.

In collaboration with:	rdivacky
Tested by:	Scot Hetzel <swhetzel gmail com>, Milos Vyletel <mvyletel mzm cz>
Sponsored by:	Google SoC 2007

1 files changed, 10 insertions, 2 deletions

diff --git a/sys/modules/linux/Makefile b/sys/modules/linux/Makefile
index 1230470..5d956d9 100644
--- a/sys/modules/linux/Makefile
+++ b/sys/modules/linux/Makefile
@@ -14,8 +14,12 @@ SRCS=	linux${SFX}_dummy.c linux_emul.c linux_file.c \
 	linux_socket.c linux_stats.c linux_sysctl.c linux${SFX}_sysent.c \
 	linux${SFX}_sysvec.c linux_uid16.c linux_util.c linux_time.c \
 	opt_inet6.h opt_mac.h opt_compat.h opt_posix.h vnode_if.h \
-	device_if.h bus_if.h
-OBJS=	linux${SFX}_locore.o
+	device_if.h bus_if.h assym.s
+
+# XXX: for assym.s
+SRCS+=  opt_kstack_pages.h opt_nfs.h opt_apic.h opt_compat.h
+
+OBJS=	linux${SFX}_locore.o linux${SFX}_support.o
 
 .if ${MACHINE_ARCH} == "i386"
 SRCS+=	linux_ptrace.c imgact_linux.c opt_cpu.h
@@ -41,6 +45,10 @@ linux${SFX}_locore.o: linux${SFX}_locore.s linux${SFX}_assym.h
 	${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \
 	    ${.IMPSRC} -o ${.TARGET}
 
+linux${SFX}_support.o: linux${SFX}_support.s assym.s
+	${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \
+	    ${.IMPSRC} -o ${.TARGET}
+
 linux${SFX}_genassym.o: linux${SFX}_genassym.c linux.h @ machine
 	${CC} -c ${CFLAGS:N-fno-common} ${.IMPSRC}