提交 03df4f6e 编写于 作者: J Jeremy Fitzhardinge 提交者: Andi Kleen

[PATCH] i386: Clean up ELF note generation

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: NJeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: NAndi Kleen <ak@suse.de>
Cc: Eric W. Biederman <ebiederm@xmission.com>
上级 21564fd2
......@@ -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
{
......
......@@ -208,7 +208,7 @@
}
#define NOTES \
.notes : { *(.note.*) } :note
.notes : { *(.note.*) } :note
#define INITCALLS \
*(.initcall0.init) \
......
......@@ -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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