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>
171 lines
2.8 KiB
ArmAsm
171 lines
2.8 KiB
ArmAsm
/* ld script to make s390 Linux kernel
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* Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
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*/
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#include <asm/thread_info.h>
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#include <asm/page.h>
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#include <asm-generic/vmlinux.lds.h>
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#ifndef CONFIG_64BIT
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OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
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OUTPUT_ARCH(s390)
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ENTRY(_start)
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jiffies = jiffies_64 + 4;
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#else
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OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
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OUTPUT_ARCH(s390:64-bit)
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ENTRY(_start)
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jiffies = jiffies_64;
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#endif
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PHDRS {
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text PT_LOAD FLAGS(5); /* R_E */
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data PT_LOAD FLAGS(7); /* RWE */
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note PT_NOTE FLAGS(0); /* ___ */
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}
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SECTIONS
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{
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. = 0x00000000;
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.text : {
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_text = .; /* Text and read-only data */
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HEAD_TEXT
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TEXT_TEXT
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SCHED_TEXT
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LOCK_TEXT
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KPROBES_TEXT
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IRQENTRY_TEXT
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*(.fixup)
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*(.gnu.warning)
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} :text = 0x0700
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_etext = .; /* End of text section */
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NOTES :text :note
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RODATA
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#ifdef CONFIG_SHARED_KERNEL
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. = ALIGN(0x100000); /* VM shared segments are 1MB aligned */
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#endif
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. = ALIGN(PAGE_SIZE);
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_eshared = .; /* End of shareable data */
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. = ALIGN(16); /* Exception table */
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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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} :data
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.data : { /* Data */
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DATA_DATA
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CONSTRUCTORS
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}
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. = ALIGN(PAGE_SIZE);
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.data_nosave : {
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__nosave_begin = .;
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*(.data.nosave)
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}
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. = ALIGN(PAGE_SIZE);
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__nosave_end = .;
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. = ALIGN(PAGE_SIZE);
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.data.page_aligned : {
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*(.data.idt)
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}
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. = ALIGN(0x100);
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.data.cacheline_aligned : {
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*(.data.cacheline_aligned)
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}
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. = ALIGN(0x100);
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.data.read_mostly : {
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*(.data.read_mostly)
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}
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_edata = .; /* End of data section */
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. = ALIGN(THREAD_SIZE); /* init_task */
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.data.init_task : {
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*(.data.init_task)
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}
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/* will be freed after init */
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. = ALIGN(PAGE_SIZE); /* Init code and data */
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__init_begin = .;
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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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/*
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* .exit.text is discarded at runtime, not link time,
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* to deal with references from __bug_table
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*/
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.exit.text : {
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EXIT_TEXT
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}
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/* early.c uses stsi, which requires page aligned data. */
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. = ALIGN(PAGE_SIZE);
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.init.data : {
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INIT_DATA
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}
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. = ALIGN(0x100);
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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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#ifdef CONFIG_BLK_DEV_INITRD
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. = ALIGN(0x100);
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.init.ramfs : {
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__initramfs_start = .;
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*(.init.ramfs)
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. = ALIGN(2);
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__initramfs_end = .;
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}
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#endif
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PERCPU(PAGE_SIZE)
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. = ALIGN(PAGE_SIZE);
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__init_end = .; /* freed after init ends here */
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/* BSS */
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.bss : {
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__bss_start = .;
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*(.bss)
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. = ALIGN(2);
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__bss_stop = .;
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}
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_end = . ;
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/* Sections to be discarded */
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/DISCARD/ : {
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EXIT_DATA
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*(.exitcall.exit)
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*(.discard)
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}
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/* Debugging sections. */
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STABS_DEBUG
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DWARF_DEBUG
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}
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