x86 vDSO: arch/x86/vdso/vdso32

This moves the i386 vDSO sources into arch/x86/vdso/vdso32/, a
new directory.  This patch is a pure renaming, but paves the way
for consolidating the vDSO build logic.
Signed-off-by: NRoland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

arch/x86/ia32/vsyscall-sigreturn.S

@@ -139,5 +139,4 @@ __kernel_rt_sigreturn:
 	.align 4
 .LENDFDE3:
 
-#include "../../x86/kernel/vsyscall-note_32.S"
-
+#include "../vdso/vdso32/note.S"

arch/x86/kernel/Makefile_32

@@ -56,6 +56,9 @@ $(obj)/vsyscall_32.o: $(obj)/vsyscall-int80_32.so $(obj)/vsyscall-sysenter_32.so
 targets += $(foreach F,int80 sysenter,vsyscall-$F_32.o vsyscall-$F_32.so)
 targets += vsyscall-note_32.o vsyscall_32.lds
 
+$(obj)/vsyscall-%_32.o: $(src)/../vdso/vdso32/%.S
+	$(call if_changed_dep,as_o_S)
+
 # The DSO images are built using a special linker script.
 quiet_cmd_syscall = SYSCALL $@
       cmd_syscall = $(CC) -m elf_i386 -nostdlib $(SYSCFLAGS_$(@F)) \

arch/x86/kernel/vsyscall-int80_32.S → arch/x86/vdso/vdso32/int80.S

@@ -50,4 +50,4 @@ __kernel_vsyscall:
 /*
  * Get the common code for the sigreturn entry points.
  */
-#include "vsyscall-sigreturn_32.S"
+#include "sigreturn.S"

arch/x86/kernel/vsyscall-note_32.S → arch/x86/vdso/vdso32/note.S

@@ -33,7 +33,7 @@ ELFNOTE_END
  * at boot time we set VDSO_NOTE_NONEGSEG_BIT if running under Xen.
  */
 
-#include "../../x86/xen/vdso.h"	/* Defines VDSO_NOTE_NONEGSEG_BIT.  */
+#include "../../xen/vdso.h"	/* Defines VDSO_NOTE_NONEGSEG_BIT.  */
 
 	.globl VDSO_NOTE_MASK
 ELFNOTE_START(GNU, 2, "a")

arch/x86/kernel/vsyscall-sysenter_32.S → arch/x86/vdso/vdso32/sysenter.S

@@ -119,4 +119,4 @@ SYSENTER_RETURN:
 /*
  * Get the common code for the sigreturn entry points.
  */
-#include "vsyscall-sigreturn_32.S"
+#include "sigreturn.S"