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>
149 lines
2.0 KiB
ArmAsm
149 lines
2.0 KiB
ArmAsm
#include <asm-generic/vmlinux.lds.h>
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#include <asm/page.h>
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OUTPUT_FORMAT("elf64-alpha")
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OUTPUT_ARCH(alpha)
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ENTRY(__start)
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PHDRS { kernel PT_LOAD; note PT_NOTE; }
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jiffies = jiffies_64;
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SECTIONS
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{
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#ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
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. = 0xfffffc0000310000;
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#else
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. = 0xfffffc0001010000;
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#endif
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_text = .; /* Text and read-only data */
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.text : {
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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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*(.fixup)
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*(.gnu.warning)
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} :kernel
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_etext = .; /* End of text section */
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NOTES :kernel :note
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.dummy : {
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*(.dummy)
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} :kernel
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RODATA
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/* Exception table */
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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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/* Will be freed after init */
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. = ALIGN(PAGE_SIZE);
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/* 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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.init.data : {
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INIT_DATA
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}
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. = ALIGN(16);
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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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. = ALIGN(8);
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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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#ifdef CONFIG_BLK_DEV_INITRD
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. = ALIGN(PAGE_SIZE);
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.init.ramfs : {
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__initramfs_start = .;
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*(.init.ramfs)
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__initramfs_end = .;
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}
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#endif
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. = ALIGN(8);
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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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. = ALIGN(8);
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SECURITY_INIT
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PERCPU(PAGE_SIZE)
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. = ALIGN(2 * PAGE_SIZE);
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__init_end = .;
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/* Freed after init ends here */
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/* Note 2 page alignment above. */
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.data.init_thread : {
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*(.data.init_thread)
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}
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. = ALIGN(PAGE_SIZE);
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.data.page_aligned : {
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*(.data.page_aligned)
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}
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. = ALIGN(64);
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.data.cacheline_aligned : {
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*(.data.cacheline_aligned)
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}
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_data = .;
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/* Data */
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.data : {
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DATA_DATA
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CONSTRUCTORS
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}
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.got : {
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*(.got)
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}
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.sdata : {
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*(.sdata)
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}
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_edata = .; /* End of data section */
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__bss_start = .;
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.sbss : {
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*(.sbss)
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*(.scommon)
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}
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.bss : {
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*(.bss)
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*(COMMON)
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}
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__bss_stop = .;
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_end = .;
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.mdebug 0 : {
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*(.mdebug)
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}
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.note 0 : {
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*(.note)
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}
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STABS_DEBUG
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DWARF_DEBUG
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DISCARDS
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}
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