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023bf6f1b8
Discarded sections in different archs share some commonality but have considerable differences. This led to linker script for each arch implementing its own /DISCARD/ definition, which makes maintaining tedious and adding new entries error-prone. This patch makes all linker scripts to move discard definitions to the end of the linker script and use the common DISCARDS macro. As ld uses the first matching section definition, archs can include default discarded sections by including them earlier in the linker script. ia64 is notable because it first throws away some ia64 specific subsections and then include the rest of the sections into the final image, so those sections must be discarded before the inclusion. defconfig compile tested for x86, x86-64, powerpc, powerpc64, ia64, alpha, sparc, sparc64 and s390. Michal Simek tested microblaze. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Tested-by: Michal Simek <monstr@monstr.eu> Cc: linux-arch@vger.kernel.org Cc: Michal Simek <monstr@monstr.eu> Cc: microblaze-uclinux@itee.uq.edu.au Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Tony Luck <tony.luck@intel.com>
135 lines
2.6 KiB
ArmAsm
135 lines
2.6 KiB
ArmAsm
/*
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* AVR32 linker script for the Linux kernel
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*
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* Copyright (C) 2004-2006 Atmel Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#define LOAD_OFFSET 0x00000000
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#include <asm-generic/vmlinux.lds.h>
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#include <asm/cache.h>
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#include <asm/thread_info.h>
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OUTPUT_FORMAT("elf32-avr32", "elf32-avr32", "elf32-avr32")
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OUTPUT_ARCH(avr32)
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ENTRY(_start)
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/* Big endian */
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jiffies = jiffies_64 + 4;
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SECTIONS
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{
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. = CONFIG_ENTRY_ADDRESS;
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.init : AT(ADDR(.init) - LOAD_OFFSET) {
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_stext = .;
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__init_begin = .;
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_sinittext = .;
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*(.text.reset)
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INIT_TEXT
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/*
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* .exit.text is discarded at runtime, not
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* link time, to deal with references from
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* __bug_table
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*/
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EXIT_TEXT
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_einittext = .;
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. = ALIGN(4);
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__tagtable_begin = .;
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*(.taglist.init)
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__tagtable_end = .;
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INIT_DATA
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. = ALIGN(16);
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__setup_start = .;
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*(.init.setup)
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__setup_end = .;
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. = ALIGN(4);
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__initcall_start = .;
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INITCALLS
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__initcall_end = .;
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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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__security_initcall_start = .;
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*(.security_initcall.init)
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__security_initcall_end = .;
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#ifdef CONFIG_BLK_DEV_INITRD
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. = ALIGN(32);
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__initramfs_start = .;
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*(.init.ramfs)
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__initramfs_end = .;
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#endif
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. = ALIGN(PAGE_SIZE);
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__init_end = .;
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}
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.text : AT(ADDR(.text) - LOAD_OFFSET) {
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_evba = .;
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_text = .;
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*(.ex.text)
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*(.irq.text)
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KPROBES_TEXT
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TEXT_TEXT
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SCHED_TEXT
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LOCK_TEXT
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*(.fixup)
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*(.gnu.warning)
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_etext = .;
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} = 0xd703d703
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. = ALIGN(4);
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__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
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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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RODATA
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. = ALIGN(THREAD_SIZE);
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.data : AT(ADDR(.data) - LOAD_OFFSET) {
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_data = .;
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_sdata = .;
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/*
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* First, the init task union, aligned to an 8K boundary.
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*/
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*(.data.init_task)
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/* Then, the page-aligned data */
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. = ALIGN(PAGE_SIZE);
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*(.data.page_aligned)
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/* Then, the cacheline aligned data */
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. = ALIGN(L1_CACHE_BYTES);
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*(.data.cacheline_aligned)
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/* And the rest... */
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*(.data.rel*)
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DATA_DATA
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CONSTRUCTORS
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_edata = .;
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}
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. = ALIGN(8);
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.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
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__bss_start = .;
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*(.bss)
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*(COMMON)
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. = ALIGN(8);
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__bss_stop = .;
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_end = .;
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}
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DWARF_DEBUG
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/* When something in the kernel is NOT compiled as a module, the module
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* cleanup code and data are put into these segments. Both can then be
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* thrown away, as cleanup code is never called unless it's a module.
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*/
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DISCARDS
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}
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