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>
153 lines
3.0 KiB
ArmAsm
153 lines
3.0 KiB
ArmAsm
/* ld script to make the Linux/CRIS kernel
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* Authors: Bjorn Wesen (bjornw@axis.com)
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*
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* It is VERY DANGEROUS to fiddle around with the symbols in this
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* script. It is for example quite vital that all generated sections
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* that are used are actually named here, otherwise the linker will
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* put them at the end, where the init stuff is which is FREED after
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* the kernel has booted.
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*/
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#include <linux/autoconf.h>
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#include <asm-generic/vmlinux.lds.h>
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#include <asm/page.h>
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#ifdef CONFIG_ETRAX_VMEM_SIZE
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#define __CONFIG_ETRAX_VMEM_SIZE CONFIG_ETRAX_VMEM_SIZE
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#else
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#define __CONFIG_ETRAX_VMEM_SIZE 0
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#endif
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jiffies = jiffies_64;
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SECTIONS
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{
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. = DRAM_VIRTUAL_BASE;
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dram_start = .;
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#ifdef CONFIG_ETRAX_ARCH_V10
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ibr_start = .;
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#else
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ebp_start = .;
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/* The boot section is only necessary until the VCS top */
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/* level testbench includes both flash and DRAM. */
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.boot : { *(.boot) }
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#endif
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/* see head.S and pages reserved at the start */
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. = DRAM_VIRTUAL_BASE + 0x4000;
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_text = .; /* Text and read-only data. */
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text_start = .; /* Lots of aliases. */
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_stext = .;
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__stext = .;
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.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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*(.text.__*)
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}
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_etext = . ; /* End of text section. */
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__etext = .;
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. = ALIGN(4); /* Exception table. */
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__start___ex_table = .;
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__ex_table : { *(__ex_table) }
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__stop___ex_table = .;
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RODATA
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. = ALIGN (4);
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___data_start = . ;
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__Sdata = . ;
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.data : { /* Data */
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DATA_DATA
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}
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__edata = . ; /* End of data section. */
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_edata = . ;
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. = ALIGN(PAGE_SIZE); /* init_task and stack, must be aligned. */
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.data.init_task : { *(.data.init_task) }
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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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.init.data : { INIT_DATA }
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. = ALIGN(16);
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__setup_start = .;
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.init.setup : { *(.init.setup) }
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__setup_end = .;
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#ifdef CONFIG_ETRAX_ARCH_V32
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__start___param = .;
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__param : { *(__param) }
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__stop___param = .;
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#endif
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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_ETRAX_ARCH_V10
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#ifdef CONFIG_BLK_DEV_INITRD
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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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#endif
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__vmlinux_end = .; /* Last address of the physical file. */
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#ifdef CONFIG_ETRAX_ARCH_V32
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PERCPU(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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/*
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* We fill to the next page, so we can discard all init
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* pages without needing to consider what payload might be
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* appended to the kernel image.
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*/
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. = ALIGN(PAGE_SIZE);
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__init_end = .;
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__data_end = . ; /* Move to _edata ? */
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__bss_start = .; /* BSS. */
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.bss : {
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*(COMMON)
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*(.bss)
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}
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. = ALIGN (0x20);
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_end = .;
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__end = .;
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/* Sections to be discarded */
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/DISCARD/ : {
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EXIT_TEXT
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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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dram_end = dram_start + (CONFIG_ETRAX_DRAM_SIZE - __CONFIG_ETRAX_VMEM_SIZE)*1024*1024;
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}
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