Thread (37 messages) 37 messages, 7 authors, 2007-02-22
STALE7056d

[patch 02/24] Xen-paravirt_ops: Clean up ELF note generation

From: Jeremy Fitzhardinge <hidden>
Date: 2007-02-21 20:52:56
Also in: xen-devel

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 <redacted>
Cc: Eric W. Biederman <redacted>

===================================================================
--- a/arch/i386/kernel/vmlinux.lds.S
+++ b/arch/i386/kernel/vmlinux.lds.S
@@ -34,7 +34,7 @@ PHDRS {
 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
 {
===================================================================
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -208,7 +208,7 @@
 	}
 
 #define NOTES								\
-		.notes : { *(.note.*) } :note
+	.notes : { *(.note.*) } :note
 
 #define INITCALLS							\
   	*(.initcall0.init)						\
===================================================================
--- a/include/linux/elfnote.h
+++ b/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				;	\
-- 
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help