linux-kernel - [PATCH/RFC] Sample conversion of powerpc

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Message-ID: <20090504143032.GB8237@uranus.ravnborg.org>
Date:	Mon, 4 May 2009 16:30:32 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Tim Abbott <tabbott@....EDU>
Cc:	Linux kernel mailing list <linux-kernel@...r.kernel.org>,
	linux arch <linux-arch@...r.kernel.org>,
	Anders Kaseorg <andersk@....edu>
Subject: [PATCH/RFC] Sample conversion of powerpc

This is the patch to convert powerpc to the
new linker script setup.

Note that powerpc does not take benefit of all the consolidations.

	Sam

 arch/powerpc/kernel/vmlinux.lds.S |   53 +++++--------------------------------
 1 files changed, 7 insertions(+), 46 deletions(-)

diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index a047a6c..e0fef43 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -75,14 +75,8 @@ SECTIONS
 	PROVIDE32 (etext = .);
 
 	/* Read-only data */
-	RODATA
-
-	/* Exception & bug tables */
-	__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
-		__start___ex_table = .;
-		*(__ex_table)
-		__stop___ex_table = .;
-	}
+	RO_DATA_SECTION(PAGE_SIZE)
+	EXCEPTION_TABLE(1)
 
 	NOTES :kernel :notes
 
@@ -100,11 +94,7 @@ SECTIONS
 	. = ALIGN(PAGE_SIZE);
 	__init_begin = .;
 
-	.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
-		_sinittext = .;
-		INIT_TEXT
-		_einittext = .;
-	} :kernel
+	INIT_TEXT_SECTION(PAGE_SIZE) :kernel
 
 	/* .exit.text is discarded at runtime, not link time,
 	 * to deal with references from __bug_table
@@ -113,8 +103,10 @@ SECTIONS
 		EXIT_TEXT
 	}
 
-	.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
-		INIT_DATA
+	INIT_DATA_SECTION(16)
+	PERCPU(PAGE_SIZE)
+
+	.init.data :  {
 		__vtop_table_begin = .;
 		*(.vtop_fixup);
 		__vtop_table_end = .;
@@ -128,27 +120,6 @@ SECTIONS
 #endif
 	}
 
-	. = ALIGN(16);
-	.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
-		__setup_start = .;
-		*(.init.setup)
-		__setup_end = .;
-	}
-
-	.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
-		__initcall_start = .;
-		INITCALLS
-		__initcall_end = .;
-		}
-
-	.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
-		__con_initcall_start = .;
-		*(.con_initcall.init)
-		__con_initcall_end = .;
-	}
-
-	SECURITY_INIT
-
 	. = ALIGN(8);
 	__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
 		__start___ftr_fixup = .;
@@ -175,15 +146,6 @@ SECTIONS
 		__stop___fw_ftr_fixup = .;
 	}
 #endif
-#ifdef CONFIG_BLK_DEV_INITRD
-	. = ALIGN(PAGE_SIZE);
-	.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
-		__initramfs_start = .;
-		*(.init.ramfs)
-		__initramfs_end = .;
-	}
-#endif
-	PERCPU(PAGE_SIZE)
 
 	. = ALIGN(8);
 	.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
@@ -247,7 +209,6 @@ SECTIONS
 
 	. = ALIGN(PAGE_SIZE);
 	_edata  =  .;
-	PROVIDE32 (edata = .);
 
 	/* The initial task and kernel stack */
 #ifdef CONFIG_PPC32
--
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