405d967dc7
x86 throws away .discard section but no other archs do. Also, .discard is not thrown away while linking modules. Make every arch and module linking throw it away. This will be used to define dummy variables for percpu declarations and definitions. This patch is based on Ivan Kokshaysky's alpha percpu patch. [ Impact: always throw away everything in .discard ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Bryan Wu <cooloney@kernel.org> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Tony Luck <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: David S. Miller <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Chris Zankel <chris@zankel.net> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@elte.hu>
168 lines
3.0 KiB
ArmAsm
168 lines
3.0 KiB
ArmAsm
/*
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* Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2008-2009 PetaLogix
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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OUTPUT_FORMAT("elf32-microblaze", "elf32-microblaze", "elf32-microblaze")
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OUTPUT_ARCH(microblaze)
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ENTRY(_start)
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#include <asm-generic/vmlinux.lds.h>
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jiffies = jiffies_64 + 4;
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SECTIONS {
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. = CONFIG_KERNEL_START;
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.text : {
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_text = . ;
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_stext = . ;
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*(.text .text.*)
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*(.fixup)
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*(.exitcall.exit)
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SCHED_TEXT
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LOCK_TEXT
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KPROBES_TEXT
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. = ALIGN (4) ;
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_etext = . ;
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}
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. = ALIGN (4) ;
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_fdt_start = . ; /* place for fdt blob */
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. = . + 0x4000;
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_fdt_end = . ;
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. = ALIGN(16);
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RODATA
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. = ALIGN(16);
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__ex_table : {
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__start___ex_table = .;
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*(__ex_table)
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__stop___ex_table = .;
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}
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/*
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* sdata2 section can go anywhere, but must be word aligned
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* and SDA2_BASE must point to the middle of it
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*/
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.sdata2 : {
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_ssrw = .;
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. = ALIGN(4096); /* page aligned when MMU used - origin 0x8 */
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*(.sdata2)
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. = ALIGN(8);
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_essrw = .;
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_ssrw_size = _essrw - _ssrw;
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_KERNEL_SDA2_BASE_ = _ssrw + (_ssrw_size / 2);
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}
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_sdata = . ;
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.data ALIGN (4096) : { /* page aligned when MMU used - origin 0x4 */
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DATA_DATA
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CONSTRUCTORS
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}
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. = ALIGN(32);
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.data.cacheline_aligned : { *(.data.cacheline_aligned) }
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_edata = . ;
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/* Reserve some low RAM for r0 based memory references */
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. = ALIGN(0x4) ;
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r0_ram = . ;
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. = . + 4096; /* a page should be enough */
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/* The initial task */
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. = ALIGN(8192);
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.data.init_task : { *(.data.init_task) }
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/* Under the microblaze ABI, .sdata and .sbss must be contiguous */
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. = ALIGN(8);
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.sdata : {
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_ssro = .;
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*(.sdata)
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}
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.sbss : {
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_ssbss = .;
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*(.sbss)
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_esbss = .;
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_essro = .;
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_ssro_size = _essro - _ssro ;
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_KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ;
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}
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__init_begin = .;
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. = ALIGN(4096);
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.init.text : {
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_sinittext = . ;
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INIT_TEXT
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_einittext = .;
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}
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.init.data : {
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INIT_DATA
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}
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. = ALIGN(4);
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.init.ivt : {
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__ivt_start = .;
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*(.init.ivt)
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__ivt_end = .;
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}
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.init.setup : {
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__setup_start = .;
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*(.init.setup)
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__setup_end = .;
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}
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.initcall.init : {
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__initcall_start = .;
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INITCALLS
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__initcall_end = .;
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}
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.con_initcall.init : {
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__con_initcall_start = .;
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*(.con_initcall.init)
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__con_initcall_end = .;
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}
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SECURITY_INIT
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__init_end_before_initramfs = .;
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.init.ramfs ALIGN(4096) : {
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__initramfs_start = .;
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*(.init.ramfs)
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__initramfs_end = .;
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. = ALIGN(4);
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LONG(0);
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/*
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* FIXME this can break initramfs for MMU.
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* Pad init.ramfs up to page boundary,
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* so that __init_end == __bss_start. This will make image.elf
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* consistent with the image.bin
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*/
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/* . = ALIGN(4096); */
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}
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__init_end = .;
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.bss ALIGN (4096) : { /* page aligned when MMU used */
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__bss_start = . ;
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*(.bss*)
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*(COMMON)
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. = ALIGN (4) ;
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__bss_stop = . ;
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_ebss = . ;
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}
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. = ALIGN(4096);
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_end = .;
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/DISCARD/ : { *(.discard) }
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}
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