xref: /linux-6.15/arch/sh/kernel/vmlinux.lds.S (revision dce97c8c)

/*
 * ld script to make SuperH Linux kernel
 * Written by Niibe Yutaka and Paul Mundt
 */
#ifdef CONFIG_SUPERH64
#define LOAD_OFFSET	CONFIG_PAGE_OFFSET
OUTPUT_ARCH(sh:sh5)
#else
OUTPUT_ARCH(sh)
#ifdef CONFIG_CPU_LITTLE_ENDIAN
OUTPUT_FORMAT("elf32-sh-linux", "elf32-sh-linux", "elf32-sh-linux")
#else
OUTPUT_FORMAT("elf32-shbig-linux", "elf32-shbig-linux", "elf32-shbig-linux")
#endif
#endif

#include <asm/thread_info.h>
#include <asm/cache.h>
#include <asm-generic/vmlinux.lds.h>

ENTRY(_start)
SECTIONS
{
#ifdef CONFIG_PMB_FIXED
	. = CONFIG_PAGE_OFFSET + (CONFIG_MEMORY_START & 0x1fffffff) +
	    CONFIG_ZERO_PAGE_OFFSET;
#elif defined(CONFIG_32BIT)
	. = CONFIG_PAGE_OFFSET + CONFIG_ZERO_PAGE_OFFSET;
#else
	. = CONFIG_PAGE_OFFSET + CONFIG_MEMORY_START + CONFIG_ZERO_PAGE_OFFSET;
#endif

	.empty_zero_page : AT(ADDR(.empty_zero_page) - LOAD_OFFSET) {
		*(.empty_zero_page)
	} = 0

	.text : AT(ADDR(.text) - LOAD_OFFSET) {
		_text = .;		/* Text and read-only data */
		HEAD_TEXT
		TEXT_TEXT

#ifdef CONFIG_SUPERH64
		*(.text64)
		*(.text..SHmedia32)
#endif

		SCHED_TEXT
		LOCK_TEXT
		KPROBES_TEXT
		IRQENTRY_TEXT
		*(.fixup)
		*(.gnu.warning)
		_etext = .;		/* End of text section */
	} = 0x0009

	. = ALIGN(16);		/* Exception table */
	__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
		__start___ex_table = .;
		*(__ex_table)
		__stop___ex_table = .;
	}

	NOTES
	RO_DATA(PAGE_SIZE)

	/*
	 * Code which must be executed uncached and the associated data
	 */
	. = ALIGN(PAGE_SIZE);
	.uncached : AT(ADDR(.uncached) - LOAD_OFFSET) {
		__uncached_start = .;
		*(.uncached.text)
		*(.uncached.data)
		__uncached_end = .;
	}

	. = ALIGN(THREAD_SIZE);
	.data : AT(ADDR(.data) - LOAD_OFFSET) {		/* Data */
		*(.data.init_task)

		. = ALIGN(L1_CACHE_BYTES);
		*(.data.cacheline_aligned)

		. = ALIGN(L1_CACHE_BYTES);
		*(.data.read_mostly)

		. = ALIGN(PAGE_SIZE);
		*(.data.page_aligned)

		__nosave_begin = .;
		*(.data.nosave)
		. = ALIGN(PAGE_SIZE);
		__nosave_end = .;

		DATA_DATA
		CONSTRUCTORS
	}

	_edata = .;			/* End of data section */

	. = ALIGN(PAGE_SIZE);		/* Init code and data */
	.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
		__init_begin = .;
		_sinittext = .;
		INIT_TEXT
		_einittext = .;
	}

	.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { INIT_DATA }

	. = ALIGN(16);
	.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
		__setup_start = .;
		*(.init.setup)
		__setup_end = .;
	}

	.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
		__initcall_start = .;
		INITCALLS
		__initcall_end = .;
	}

	.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
		__con_initcall_start = .;
		*(.con_initcall.init)
		__con_initcall_end = .;
	}

	SECURITY_INIT

#ifdef CONFIG_BLK_DEV_INITRD
	. = ALIGN(PAGE_SIZE);
	.init.ramfs : AT(ADDR(.init_ramfs) - LOAD_OFFSET) {
		__initramfs_start = .;
		*(.init.ramfs)
		__initramfs_end = .;
	}
#endif

	. = ALIGN(4);
	.machvec.init : AT(ADDR(.machvec.init) - LOAD_OFFSET) {
		__machvec_start = .;
		*(.machvec.init)
		__machvec_end = .;
	}

	PERCPU(PAGE_SIZE)

	/*
	 * .exit.text is discarded at runtime, not link time, to deal with
	 * references from __bug_table
	 */
	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { EXIT_TEXT }
	.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { EXIT_DATA }

	. = ALIGN(PAGE_SIZE);
	.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
		__init_end = .;
		__bss_start = .;		/* BSS */
		*(.bss.page_aligned)
		*(.bss)
		*(COMMON)
		. = ALIGN(4);
		_ebss = .;			/* uClinux MTD sucks */
		_end = . ;
	}

	/*
	 * When something in the kernel is NOT compiled as a module, the
	 * module cleanup code and data are put into these segments. Both
	 * can then be thrown away, as cleanup code is never called unless
	 * it's a module.
	 */
	/DISCARD/ : {
		*(.exitcall.exit)
	}

	STABS_DEBUG
	DWARF_DEBUG
}