From: Jeremy Fitzhardinge <[email protected]>
Three cleanups:
1: ELF notes are never mapped, so there's no need to have any access
flags in their phdr.
2: When generating them from asm, tell the assembler to use a SHT_NOTE
section type. There doesn't seem to be a way to do this from C.
3: Use ANSI rather than traditional cpp behaviour to stringify the
macro argument.
Signed-off-by: Jeremy Fitzhardinge <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
Cc: Eric W. Biederman <[email protected]>
---
arch/i386/kernel/vmlinux.lds.S | 2 +-
include/asm-generic/vmlinux.lds.h | 2 +-
include/linux/elfnote.h | 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)
===================================================================
Index: linux/arch/i386/kernel/vmlinux.lds.S
===================================================================
--- linux.orig/arch/i386/kernel/vmlinux.lds.S
+++ linux/arch/i386/kernel/vmlinux.lds.S
@@ -30,7 +30,7 @@ jiffies = jiffies_64;
PHDRS {
text PT_LOAD FLAGS(5); /* R_E */
data PT_LOAD FLAGS(7); /* RWE */
- note PT_NOTE FLAGS(4); /* R__ */
+ note PT_NOTE FLAGS(0); /* ___ */
}
SECTIONS
{
Index: linux/include/asm-generic/vmlinux.lds.h
===================================================================
--- linux.orig/include/asm-generic/vmlinux.lds.h
+++ linux/include/asm-generic/vmlinux.lds.h
@@ -208,7 +208,7 @@
}
#define NOTES \
- .notes : { *(.note.*) } :note
+ .notes : { *(.note.*) } :note
#define INITCALLS \
*(.initcall0.init) \
Index: linux/include/linux/elfnote.h
===================================================================
--- linux.orig/include/linux/elfnote.h
+++ linux/include/linux/elfnote.h
@@ -39,12 +39,12 @@
* ELFNOTE(XYZCo, 12, .long, 0xdeadbeef)
*/
#define ELFNOTE(name, type, desctype, descdata) \
-.pushsection .note.name ; \
+.pushsection .note.name, "",@note ; \
.align 4 ; \
.long 2f - 1f /* namesz */ ; \
.long 4f - 3f /* descsz */ ; \
.long type ; \
-1:.asciz "name" ; \
+1:.asciz #name ; \
2:.align 4 ; \
3:desctype descdata ; \
4:.align 4 ; \
-
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