use elfnote.h to generate vsyscall notes.
Jeremy Fitzhardinge [Wed, 18 Jul 2007 01:37:03 +0000 (18:37 -0700)]
Use existing elfnote.h to generate vsyscall notes, rather than doing
it locally.  Changes elfnote.h a bit to suit, since this is the first
asm user, and it wasn't quite right.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.com>

arch/i386/kernel/vsyscall-note.S
include/linux/elfnote.h

index d4b5be4..52e0cbb 100644 (file)
@@ -3,23 +3,12 @@
  * Here we can supply some information useful to userland.
  */
 
-#include <linux/uts.h>
 #include <linux/version.h>
+#include <linux/elfnote.h>
 
-#define ASM_ELF_NOTE_BEGIN(name, flags, vendor, type)                        \
-       .section name, flags;                                                 \
-       .balign 4;                                                            \
-       .long 1f - 0f;          /* name length */                             \
-       .long 3f - 2f;          /* data length */                             \
-       .long type;             /* note type */                               \
-0:     .asciz vendor;          /* vendor name */                             \
-1:     .balign 4;                                                            \
-2:
-
-#define ASM_ELF_NOTE_END                                                     \
-3:     .balign 4;              /* pad out section */                         \
-       .previous
-
-       ASM_ELF_NOTE_BEGIN(".note.kernel-version", "a", UTS_SYSNAME, 0)
+/* 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
-       ASM_ELF_NOTE_END
+ELFNOTE_END
index 9a1e067..e831759 100644 (file)
  * e.g. ELFNOTE(XYZCo, 42, .asciz, "forty-two")
  *      ELFNOTE(XYZCo, 12, .long, 0xdeadbeef)
  */
-#define ELFNOTE(name, type, desctype, descdata)        \
-.pushsection .note.name, "",@note      ;       \
-  .align 4                             ;       \
+#define ELFNOTE_START(name, type, flags)       \
+.pushsection .note.name, flags,@note   ;       \
+  .balign 4                            ;       \
   .long 2f - 1f                /* namesz */    ;       \
-  .long 4f - 3f                /* descsz */    ;       \
+  .long 4484f - 3f     /* descsz */    ;       \
   .long type                           ;       \
 1:.asciz #name                         ;       \
-2:.align 4                             ;       \
-3:desctype descdata                    ;       \
-4:.align 4                             ;       \
+2:.balign 4                            ;       \
+3:
+
+#define ELFNOTE_END                            \
+4484:.balign 4                         ;       \
 .popsection                            ;
+
+#define ELFNOTE(name, type, desc)              \
+       ELFNOTE_START(name, type, "")           \
+               desc                    ;       \
+       ELFNOTE_END
+
 #else  /* !__ASSEMBLER__ */
 #include <linux/elf.h>
 /*