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[PATCH] i386: Clean up ELF note generation

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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 <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Jeremy Fitzhardinge
2007-05-02 19:27:17 +02:00
committed by Andi Kleen
parent 21564fd2a3
commit 03df4f6ee9
3 changed files with 4 additions and 4 deletions
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2
arch/i386/kernel/vmlinux.lds.S
View File

@@ -30,7 +30,7 @@ jiffies = jiffies_64;
PHDRS { PHDRS {
text PT_LOAD FLAGS(5); /* R_E */ text PT_LOAD FLAGS(5); /* R_E */
data PT_LOAD FLAGS(7); /* RWE */ data PT_LOAD FLAGS(7); /* RWE */
note PT_NOTE FLAGS(4); /* R__ */ note PT_NOTE FLAGS(0); /* ___ */
} }
SECTIONS SECTIONS
{ {

4
include/linux/elfnote.h
View File

@@ -39,12 +39,12 @@
* ELFNOTE(XYZCo, 12, .long, 0xdeadbeef) * ELFNOTE(XYZCo, 12, .long, 0xdeadbeef)
*/ */
#define ELFNOTE(name, type, desctype, descdata) \ #define ELFNOTE(name, type, desctype, descdata) \
.pushsection .note.name ; \ .pushsection .note.name, "",@note ; \
.align 4 ; \ .align 4 ; \
.long 2f - 1f /* namesz */ ; \ .long 2f - 1f /* namesz */ ; \
.long 4f - 3f /* descsz */ ; \ .long 4f - 3f /* descsz */ ; \
.long type ; \ .long type ; \
1:.asciz "name" ; \ 1:.asciz #name ; \
2:.align 4 ; \ 2:.align 4 ; \
3:desctype descdata ; \ 3:desctype descdata ; \
4:.align 4 ; \ 4:.align 4 ; \