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vmlinux.lds.h update

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Updated after review by Tim Abbott.
- Use HEAD_TEXT_SECTION
- Drop use of section-names.h and delete file
- Introduce EXIT_CALL

Deleting section-names.h required a few simple
updates of init.h

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Tim Abbott <tabbott@ksplice.com>
This commit is contained in:
Sam Ravnborg 2009-06-14 22:10:41 +02:00
parent b9d97328e2
commit 7923f90fff
3 changed files with 11 additions and 16 deletions
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17
include/asm-generic/vmlinux.lds.h
View File

@ -12,7 +12,7 @@
* { * {
* . = START; * . = START;
* __init_begin = .; * __init_begin = .;
* HEAD_SECTION * HEAD_TEXT_SECTION
* INIT_TEXT_SECTION(PAGE_SIZE) * INIT_TEXT_SECTION(PAGE_SIZE)
* INIT_DATA_SECTION(...) * INIT_DATA_SECTION(...)
* PERCPU(PAGE_SIZE) * PERCPU(PAGE_SIZE)
@ -38,7 +38,7 @@
* /DISCARD/ : { * /DISCARD/ : {
* EXIT_TEXT * EXIT_TEXT
* EXIT_DATA * EXIT_DATA
* *(.exitcall.exit) * EXIT_CALL
* } * }
* STABS_DEBUG * STABS_DEBUG
* DWARF_DEBUG * DWARF_DEBUG
@ -52,7 +52,6 @@
* Examples are: [__initramfs_start, __initramfs_end] for initramfs and * Examples are: [__initramfs_start, __initramfs_end] for initramfs and
* [__nosave_begin, __nosave_end] for the nosave data * [__nosave_begin, __nosave_end] for the nosave data
*/ */
#include <linux/section-names.h>
#ifndef LOAD_OFFSET #ifndef LOAD_OFFSET
#define LOAD_OFFSET 0 #define LOAD_OFFSET 0
@ -414,9 +413,9 @@
#endif #endif
/* Section used for early init (in .S files) */ /* Section used for early init (in .S files) */
#define HEAD_TEXT *(HEAD_TEXT_SECTION) #define HEAD_TEXT *(.head.text)
#define HEAD_SECTION \ #define HEAD_TEXT_SECTION \
.head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \
HEAD_TEXT \ HEAD_TEXT \
} }
@ -473,6 +472,9 @@
CPU_DISCARD(exit.text) \ CPU_DISCARD(exit.text) \
MEM_DISCARD(exit.text) MEM_DISCARD(exit.text)
#define EXIT_CALL \
*(.exitcall.exit)
/* /*
* bss (Block Started by Symbol) - uninitialized data * bss (Block Started by Symbol) - uninitialized data
* zeroed during startup * zeroed during startup
@ -692,7 +694,7 @@
* NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
* matches the requirment of PAGE_ALIGNED_DATA. * matches the requirment of PAGE_ALIGNED_DATA.
* *
/* use 0 as page_align if page_aligned data is not used */ * use 0 as page_align if page_aligned data is not used */
#define RW_DATA_SECTION(cacheline, nosave, pagealigned, inittask) \ #define RW_DATA_SECTION(cacheline, nosave, pagealigned, inittask) \
. = ALIGN(PAGE_SIZE); \ . = ALIGN(PAGE_SIZE); \
.data : AT(ADDR(.data) - LOAD_OFFSET) { \ .data : AT(ADDR(.data) - LOAD_OFFSET) { \
@ -726,4 +728,5 @@
#define BSS_SECTION(sbss_align, bss_align) \ #define BSS_SECTION(sbss_align, bss_align) \
SBSS \ SBSS \
BSS(bss_align) \ BSS(bss_align) \
. = ALIGN(4); \ . = ALIGN(4);

4
include/linux/init.h
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@ -2,8 +2,6 @@
#define _LINUX_INIT_H #define _LINUX_INIT_H
#include <linux/compiler.h> #include <linux/compiler.h>
#include <linux/section-names.h>
#include <linux/stringify.h>
/* These macros are used to mark some functions or /* These macros are used to mark some functions or
* initialized data (doesn't apply to uninitialized data) * initialized data (doesn't apply to uninitialized data)
@ -101,7 +99,7 @@
#define __memexitconst __section(.memexit.rodata) #define __memexitconst __section(.memexit.rodata)
/* For assembly routines */ /* For assembly routines */
#define __HEAD .section __stringify(HEAD_TEXT_SECTION),"ax" #define __HEAD .section ".head.text","ax"
#define __INIT .section ".init.text","ax" #define __INIT .section ".init.text","ax"
#define __FINIT .previous #define __FINIT .previous

6
include/linux/section-names.h
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@ -1,6 +0,0 @@
#ifndef __LINUX_SECTION_NAMES_H
#define __LINUX_SECTION_NAMES_H
#define HEAD_TEXT_SECTION .head.text
#endif /* !__LINUX_SECTION_NAMES_H */