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SubjectRe: [RFC] Consolidate vmlinux.lds.S files
On Mon, 13 Jan 2003, Sam Ravnborg wrote:

> The purpose was to define common stuff in a single place.
> Ask Rusty Russell if it is fun to add the same section to > 50
> .lds files.
>
> Based on the feedback I will try to come up with a lighter proposal,
> that does not hurt readability.
> I still want the common stuff separated away.

I second this, though I also agree that your first cut was hiding away
stuff more than necessary.

I would suggest an approach like the following, of course showing only a
first simple step. A series of steps like this should allow for a serious
reduction in size of arch/*/vmlinux.lds.S already, while being obviously
correct and allowing archs to do their own special thing if necessary (in
particular, IA64 seems to differ from all the other archs).

--Kai


--- /dev/null Thu Apr 11 09:25:15 2002
+++ include/asm-generic/vmlinux.lds.h Mon Jan 13 12:52:56 2003
@@ -0,0 +1,6 @@
+#define EXTABLE \
+ . = ALIGN(16); \
+ __start___ex_table = .; \
+ __ex_table : { *(__ex_table) } \
+ __stop___ex_table = .; \
+
===== arch/alpha/vmlinux.lds.S 1.14 vs edited =====
--- 1.14/arch/alpha/vmlinux.lds.S Sun Jan 12 19:12:21 2003
+++ edited/arch/alpha/vmlinux.lds.S Mon Jan 13 12:53:59 2003
@@ -1,4 +1,5 @@
#include <linux/config.h>
+#include <asm-generic/vmlinux.lds.h>

OUTPUT_FORMAT("elf64-alpha")
ENTRY(__start)
@@ -18,12 +19,7 @@
_etext = .;
} :kernel

- /* Exception table */
- __ex_table ALIGN(16) : {
- __start___ex_table = .;
- *(__ex_table)
- __stop___ex_table = .;
- }
+ EXTABLE

/* Kernel symbol table */
__ksymtab ALIGN(8) : {
===== arch/arm/vmlinux-armo.lds.in 1.11 vs edited =====
--- 1.11/arch/arm/vmlinux-armo.lds.in Sun Jan 12 19:12:21 2003
+++ edited/arch/arm/vmlinux-armo.lds.in Mon Jan 13 12:55:04 2003
@@ -2,6 +2,9 @@
* taken from the i386 version by Russell King
* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
*/
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_ARCH(arm)
ENTRY(stext)
jiffies = jiffies_64;
@@ -65,12 +68,7 @@

.kstrtab : { *(.kstrtab) }

- . = ALIGN(16);
- __ex_table : { /* Exception table */
- __start___ex_table = .;
- *(__ex_table)
- __stop___ex_table = .;
- }
+ EXTABLE

__ksymtab : { /* Kernel symbol table */
__start___ksymtab = .;
===== arch/arm/vmlinux-armv.lds.in 1.18 vs edited =====
--- 1.18/arch/arm/vmlinux-armv.lds.in Sun Jan 12 22:21:35 2003
+++ edited/arch/arm/vmlinux-armv.lds.in Mon Jan 13 12:55:31 2003
@@ -2,6 +2,9 @@
* taken from the i386 version by Russell King
* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
*/
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_ARCH(arm)
ENTRY(stext)
jiffies = jiffies_64;
@@ -68,12 +71,7 @@

.kstrtab : { *(.kstrtab) }

- . = ALIGN(16);
- __ex_table : { /* Exception table */
- __start___ex_table = .;
- *(__ex_table)
- __stop___ex_table = .;
- }
+ EXTABLE

__gpl_ksymtab : { /* GPL Kernel symbol table */
__start___gpl_ksymtab = .;
===== arch/cris/vmlinux.lds.S 1.13 vs edited =====
--- 1.13/arch/cris/vmlinux.lds.S Sun Jan 12 19:12:21 2003
+++ edited/arch/cris/vmlinux.lds.S Mon Jan 13 12:56:26 2003
@@ -9,7 +9,8 @@
*/

#include <linux/config.h>
-
+#include <asm-generic/vmlinux.lds.h>
+
jiffies = jiffies_64;
SECTIONS
{
@@ -34,10 +35,7 @@
.rodata : { *(.rodata) *(.rodata.__*) }
.kstrtab : { *(.kstrtab) }

- . = ALIGN(4); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

__start___ksymtab = .; /* Kernel symbol table */
__ksymtab : { *(__ksymtab) }
===== arch/i386/vmlinux.lds.S 1.22 vs edited =====
--- 1.22/arch/i386/vmlinux.lds.S Sun Jan 12 19:12:21 2003
+++ edited/arch/i386/vmlinux.lds.S Mon Jan 13 12:54:19 2003
@@ -1,6 +1,9 @@
/* ld script to make i386 Linux kernel
* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
*/
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
OUTPUT_ARCH(i386)
ENTRY(_start)
@@ -21,10 +24,7 @@
.rodata : { *(.rodata) *(.rodata.*) }
.kstrtab : { *(.kstrtab) }

- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

. = ALIGN(64);
__start___ksymtab = .; /* Kernel symbol table */
===== arch/m68k/vmlinux-std.lds 1.12 vs edited =====
--- 1.12/arch/m68k/vmlinux-std.lds Sun Jan 12 19:12:21 2003
+++ edited/arch/m68k/vmlinux-std.lds Mon Jan 13 12:59:13 2003
@@ -1,4 +1,7 @@
/* ld script to make m68k Linux kernel */
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_FORMAT("elf32-m68k", "elf32-m68k", "elf32-m68k")
OUTPUT_ARCH(m68k)
ENTRY(_start)
@@ -15,10 +18,7 @@
.rodata : { *(.rodata) *(.rodata.*) }
.kstrtab : { *(.kstrtab) }

- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

__start___ksymtab = .; /* Kernel symbol table */
__ksymtab : { *(__ksymtab) }
===== arch/m68k/vmlinux-sun3.lds 1.9 vs edited =====
--- 1.9/arch/m68k/vmlinux-sun3.lds Sun Jan 12 19:12:21 2003
+++ edited/arch/m68k/vmlinux-sun3.lds Mon Jan 13 12:58:44 2003
@@ -1,4 +1,7 @@
/* ld script to make m68k Linux kernel */
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_FORMAT("elf32-m68k", "elf32-m68k", "elf32-m68k")
OUTPUT_ARCH(m68k)
ENTRY(_start)
@@ -23,10 +26,7 @@
*(.rodata.*)
*(.data)
CONSTRUCTORS
- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- *(__ex_table)
- __stop___ex_table = .;
+ EXTABLE
__start___ksymtab = .; /* Kernel symbol table */
*(__ksymtab)
__stop___ksymtab = .;
===== arch/mips/vmlinux.lds.S 1.5 vs edited =====
--- 1.5/arch/mips/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/mips/vmlinux.lds.S Mon Jan 13 13:08:00 2003
@@ -1,3 +1,5 @@
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_ARCH(mips)
ENTRY(kernel_entry)
SECTIONS
@@ -16,10 +18,7 @@
} =0
.kstrtab : { *(.kstrtab) }

- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

__start___dbe_table = .; /* Exception table for data bus errors */
__dbe_table : { *(__dbe_table) }
===== arch/mips64/vmlinux.lds.S 1.4 vs edited =====
--- 1.4/arch/mips64/vmlinux.lds.S Fri Aug 16 22:08:39 2002
+++ edited/arch/mips64/vmlinux.lds.S Mon Jan 13 13:07:57 2003
@@ -1,3 +1,5 @@
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_ARCH(mips)
ENTRY(kernel_entry)
SECTIONS
@@ -15,10 +17,7 @@
} =0
.kstrtab : { *(.kstrtab) }

- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

__start___dbe_table = .; /* Exception table for data bus errors */
__dbe_table : { *(__dbe_table) }
===== arch/parisc/vmlinux.lds.S 1.8 vs edited =====
--- 1.8/arch/parisc/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/parisc/vmlinux.lds.S Mon Jan 13 13:00:53 2003
@@ -1,5 +1,6 @@
#include <linux/config.h>
-
+#include <asm-generic/vmlinux.lds.h>
+
/* ld script to make hppa Linux kernel */
#ifndef CONFIG_PARISC64
OUTPUT_FORMAT("elf32-hppa-linux")
@@ -40,11 +41,8 @@
*(.data)
}

- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
-
+ EXTABLE
+
__start___ksymtab = .; /* Kernel symbol table */
__ksymtab : { *(__ksymtab) }
__stop___ksymtab = .;
===== arch/ppc/vmlinux.lds.S 1.15 vs edited =====
--- 1.15/arch/ppc/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/ppc/vmlinux.lds.S Mon Jan 13 13:01:40 2003
@@ -1,3 +1,5 @@
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_ARCH(powerpc)
SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib);
/* Do we need any of these for elf?
@@ -53,9 +55,7 @@

.fixup : { *(.fixup) }

- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

__start___ksymtab = .; /* Kernel symbol table */
__ksymtab : { *(__ksymtab) }
===== arch/ppc64/vmlinux.lds.S 1.11 vs edited =====
--- 1.11/arch/ppc64/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/ppc64/vmlinux.lds.S Mon Jan 13 13:02:06 2003
@@ -1,3 +1,5 @@
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_ARCH(powerpc:common64)
/* Do we need any of these for elf?
__DYNAMIC = 0; */
@@ -61,9 +63,7 @@
_edata = .;
PROVIDE (edata = .);

- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

__start___ksymtab = .; /* Kernel symbol table */
__ksymtab : { *(__ksymtab) }
===== arch/s390/vmlinux.lds.S 1.6 vs edited =====
--- 1.6/arch/s390/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/s390/vmlinux.lds.S Mon Jan 13 13:03:08 2003
@@ -1,6 +1,9 @@
/* ld script to make s390 Linux kernel
* Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
*/
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
OUTPUT_ARCH(s390)
ENTRY(_start)
@@ -20,10 +23,7 @@
.rodata : { *(.rodata) *(.rodata.*) }
.kstrtab : { *(.kstrtab) }

- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

. = ALIGN(64);
__start___ksymtab = .; /* Kernel symbol table */
===== arch/s390x/vmlinux.lds.S 1.6 vs edited =====
--- 1.6/arch/s390x/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/s390x/vmlinux.lds.S Mon Jan 13 13:03:27 2003
@@ -1,6 +1,9 @@
/*
* Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
*/
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
OUTPUT_ARCH(s390:64-bit)
ENTRY(_start)
@@ -20,10 +23,7 @@
.rodata : { *(.rodata) *(.rodata.*) }
.kstrtab : { *(.kstrtab) }

- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

. = ALIGN(64);
__start___ksymtab = .; /* Kernel symbol table */
===== arch/sh/vmlinux.lds.S 1.7 vs edited =====
--- 1.7/arch/sh/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/sh/vmlinux.lds.S Mon Jan 13 13:03:55 2003
@@ -3,6 +3,8 @@
* Written by Niibe Yutaka
*/
#include <linux/config.h>
+#include <asm-generic/vmlinux.lds.h>
+
#ifdef CONFIG_CPU_LITTLE_ENDIAN
OUTPUT_FORMAT("elf32-sh-linux", "elf32-sh-linux", "elf32-sh-linux")
jiffies = jiffies_64;
@@ -28,10 +30,7 @@
.rodata : { *(.rodata) *(.rodata.*) }
.kstrtab : { *(.kstrtab) }

- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

__start___ksymtab = .; /* Kernel symbol table */
__ksymtab : { *(__ksymtab) }
===== arch/sparc/vmlinux.lds.S 1.13 vs edited =====
--- 1.13/arch/sparc/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/sparc/vmlinux.lds.S Mon Jan 13 13:04:28 2003
@@ -1,4 +1,7 @@
/* ld script to make SparcLinux kernel */
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_FORMAT("elf32-sparc", "elf32-sparc", "elf32-sparc")
OUTPUT_ARCH(sparc)
ENTRY(_start)
@@ -26,9 +29,8 @@
__start___fixup = .;
.fixup : { *(.fixup) }
__stop___fixup = .;
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+
+ EXTABLE

. = ALIGN(64);
__start___ksymtab = .;
===== arch/sparc64/vmlinux.lds.S 1.14 vs edited =====
--- 1.14/arch/sparc64/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/sparc64/vmlinux.lds.S Mon Jan 13 13:05:01 2003
@@ -1,4 +1,7 @@
/* ld script to make UltraLinux kernel */
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_FORMAT("elf64-sparc", "elf64-sparc", "elf64-sparc")
OUTPUT_ARCH(sparc:v9a)
ENTRY(_start)
@@ -30,10 +33,7 @@
PROVIDE (edata = .);
.fixup : { *(.fixup) }

- . = ALIGN(16);
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

. = ALIGN(64);
__start___ksymtab = .;
===== arch/v850/vmlinux.lds.S 1.4 vs edited =====
--- 1.4/arch/v850/vmlinux.lds.S Thu Jan 9 00:27:41 2003
+++ edited/arch/v850/vmlinux.lds.S Mon Jan 13 13:06:04 2003
@@ -12,6 +12,7 @@
*/

#include <linux/config.h>
+#include <asm-generic/vmlinux.lds.h>


/* The following macros contain the usual definitions for various data areas.
@@ -44,10 +45,7 @@
. = ALIGN (4) ; \
*(.call_table_data) \
*(.call_table_text) \
- . = ALIGN (16) ; /* Exception table. */ \
- ___start___ex_table = . ; \
- *(__ex_table) \
- ___stop___ex_table = . ; \
+ EXTABLE \
___start___ksymtab = . ;/* Kernel symbol table. */ \
*(__ksymtab) \
___stop___ksymtab = . ; \
===== arch/x86_64/vmlinux.lds.S 1.9 vs edited =====
--- 1.9/arch/x86_64/vmlinux.lds.S Sun Jan 12 19:12:22 2003
+++ edited/arch/x86_64/vmlinux.lds.S Mon Jan 13 12:58:00 2003
@@ -1,6 +1,9 @@
/* ld script to make x86-64 Linux kernel
* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
*/
+
+#include <asm-generic/vmlinux.lds.h>
+
OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
OUTPUT_ARCH(i386:x86-64)
ENTRY(_start)
@@ -21,10 +24,7 @@
.rodata : { *(.rodata) *(.rodata.*) }
.kstrtab : { *(.kstrtab) }

- . = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ EXTABLE

. = ALIGN(64);
__start___ksymtab = .; /* Kernel symbol table */
-
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