i386: prepare shared kernel/vsyscall-note.S

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile
index 8d80220932f84b2e198580d19dfe73bb35b02dfc..d9dd3d677b7207c08aae4e26b4e73d51cd4e7304 100644 (file)
--- a/arch/i386/kernel/Makefile
+++ b/arch/i386/kernel/Makefile
@@ -52,7 +52,7 @@ obj-$(CONFIG_SCx200)          += scx200_32.o
 # Note: kbuild does not track this dependency due to usage of .incbin
 $(obj)/vsyscall_32.o: $(obj)/vsyscall-int80_32.so $(obj)/vsyscall-sysenter_32.so
 targets += $(foreach F,int80 sysenter,vsyscall-$F.o vsyscall-$F.so)
-targets += vsyscall-note.o vsyscall_32.lds
+targets += vsyscall-note_32.o vsyscall_32.lds
 
 # The DSO images are built using a special linker script.
 quiet_cmd_syscall = SYSCALL $@
@@ -68,7 +68,7 @@ SYSCFLAGS_vsyscall-int80_32.so        = $(vsyscall-flags)
 
 $(obj)/vsyscall-int80_32.so $(obj)/vsyscall-sysenter_32.so: \
 $(obj)/vsyscall-%.so: $(src)/vsyscall_32.lds \
-                     $(obj)/vsyscall-%.o $(obj)/vsyscall-note.o FORCE
+                     $(obj)/vsyscall-%.o $(obj)/vsyscall-note_32.o FORCE
        $(call if_changed,syscall)
 
 # We also create a special relocatable object that should mirror the symbol
@@ -80,7 +80,7 @@ $(obj)/built-in.o: ld_flags += -R $(obj)/vsyscall-syms.o
 
 SYSCFLAGS_vsyscall-syms.o = -r
 $(obj)/vsyscall-syms.o: $(src)/vsyscall_32.lds \
-                       $(obj)/vsyscall-sysenter_32.o $(obj)/vsyscall-note.o FORCE
+                       $(obj)/vsyscall-sysenter_32.o $(obj)/vsyscall-note_32.o FORCE
        $(call if_changed,syscall)
 
 k8-y                      += ../../x86_64/kernel/k8.o

diff --git a/arch/i386/kernel/vsyscall-note.S b/arch/i386/kernel/vsyscall-note.S
deleted file mode 100644 (file)
index 07c0daf..0000000
--- a/arch/i386/kernel/vsyscall-note.S
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text.
- * Here we can supply some information useful to userland.
- */
-
-#include <linux/version.h>
-#include <linux/elfnote.h>
-
-/* Ideally this would use UTS_NAME, but using a quoted string here
-   doesn't work. Remember to change this when changing the
-   kernel's name. */
-ELFNOTE_START(Linux, 0, "a")
-       .long LINUX_VERSION_CODE
-ELFNOTE_END
-
-#ifdef CONFIG_XEN
-/*
- * Add a special note telling glibc's dynamic linker a fake hardware
- * flavor that it will use to choose the search path for libraries in the
- * same way it uses real hardware capabilities like "mmx".
- * We supply "nosegneg" as the fake capability, to indicate that we
- * do not like negative offsets in instructions using segment overrides,
- * since we implement those inefficiently.  This makes it possible to
- * install libraries optimized to avoid those access patterns in someplace
- * like /lib/i686/tls/nosegneg.  Note that an /etc/ld.so.conf.d/file
- * corresponding to the bits here is needed to make ldconfig work right.
- * It should contain:
- *     hwcap 1 nosegneg
- * to match the mapping of bit to name that we give here.
- *
- * At runtime, the fake hardware feature will be considered to be present
- * if its bit is set in the mask word.  So, we start with the mask 0, and
- * at boot time we set VDSO_NOTE_NONEGSEG_BIT if running under Xen.
- */
-
-#include "../xen/vdso.h"       /* Defines VDSO_NOTE_NONEGSEG_BIT.  */
-
-       .globl VDSO_NOTE_MASK
-ELFNOTE_START(GNU, 2, "a")
-       .long 1                 /* ncaps */
-VDSO_NOTE_MASK:
-       .long 0                 /* mask */
-       .byte VDSO_NOTE_NONEGSEG_BIT; .asciz "nosegneg" /* bit, name */
-ELFNOTE_END
-#endif

diff --git a/arch/i386/kernel/vsyscall-note_32.S b/arch/i386/kernel/vsyscall-note_32.S
new file mode 100644 (file)
index 0000000..07c0daf
--- /dev/null
+++ b/arch/i386/kernel/vsyscall-note_32.S
@@ -0,0 +1,45 @@
+/*
+ * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text.
+ * Here we can supply some information useful to userland.
+ */
+
+#include <linux/version.h>
+#include <linux/elfnote.h>
+
+/* Ideally this would use UTS_NAME, but using a quoted string here
+   doesn't work. Remember to change this when changing the
+   kernel's name. */
+ELFNOTE_START(Linux, 0, "a")
+       .long LINUX_VERSION_CODE
+ELFNOTE_END
+
+#ifdef CONFIG_XEN
+/*
+ * Add a special note telling glibc's dynamic linker a fake hardware
+ * flavor that it will use to choose the search path for libraries in the
+ * same way it uses real hardware capabilities like "mmx".
+ * We supply "nosegneg" as the fake capability, to indicate that we
+ * do not like negative offsets in instructions using segment overrides,
+ * since we implement those inefficiently.  This makes it possible to
+ * install libraries optimized to avoid those access patterns in someplace
+ * like /lib/i686/tls/nosegneg.  Note that an /etc/ld.so.conf.d/file
+ * corresponding to the bits here is needed to make ldconfig work right.
+ * It should contain:
+ *     hwcap 1 nosegneg
+ * to match the mapping of bit to name that we give here.
+ *
+ * At runtime, the fake hardware feature will be considered to be present
+ * if its bit is set in the mask word.  So, we start with the mask 0, and
+ * at boot time we set VDSO_NOTE_NONEGSEG_BIT if running under Xen.
+ */
+
+#include "../xen/vdso.h"       /* Defines VDSO_NOTE_NONEGSEG_BIT.  */
+
+       .globl VDSO_NOTE_MASK
+ELFNOTE_START(GNU, 2, "a")
+       .long 1                 /* ncaps */
+VDSO_NOTE_MASK:
+       .long 0                 /* mask */
+       .byte VDSO_NOTE_NONEGSEG_BIT; .asciz "nosegneg" /* bit, name */
+ELFNOTE_END
+#endif

diff --git a/arch/x86_64/ia32/vsyscall-sigreturn.S b/arch/x86_64/ia32/vsyscall-sigreturn.S
index 1384367cdbe1f9d53097dd162b659b25e28dcf96..83e7fd683c3dd8741c896a9a6dc8a826dd0c2ac1 100644 (file)
--- a/arch/x86_64/ia32/vsyscall-sigreturn.S
+++ b/arch/x86_64/ia32/vsyscall-sigreturn.S
@@ -139,5 +139,5 @@ __kernel_rt_sigreturn:
        .align 4
 .LENDFDE3:
 
-#include "../../i386/kernel/vsyscall-note.S"
+#include "../../i386/kernel/vsyscall-note_32.S"