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: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas 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/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/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/vdso/vdso32/sigreturn.S

@@ -70,9 +70,9 @@ __kernel_rt_sigreturn:
 	   be the value of the stack pointer in the caller.  This means
 	   that we must define the CFA of this body of code to be the
 	   saved value of the stack pointer in the sigcontext.  Which
-	   also means that there is no fixed relation to the other 
+	   also means that there is no fixed relation to the other
 	   saved registers, which means that we must use DW_CFA_expression
-	   to compute their addresses.  It also means that when we 
+	   to compute their addresses.  It also means that when we
 	   adjust the stack with the popl, we have to do it all over again.  */
 
 #define do_cfa_expr(offset)						\

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"