/* * ld script to make ARM Linux kernel * taken from the i386 version by Russell King * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> */ #include <asm-generic/vmlinux.lds.h>#include <asm/thread_info.h>#include <asm/memory.h>#include <asm/page.h>#include <asm/pgtable.h> #include "image.h" /* .exit.text needed in case of alternative patching */#define ARM_EXIT_KEEP(x)	x#define ARM_EXIT_DISCARD(x) OUTPUT_ARCH(aarch64)ENTRY(_text) jiffies = jiffies_64; #define HYPERVISOR_TEXT					\	/*						\	 * Align to 4 KB so that			\	 * a) the HYP vector table is at its minimum	\	 *    alignment of 2048 bytes			\	 * b) the HYP init code will not cross a page	\	 *    boundary if its size does not exceed	\	 *    4 KB (see related ASSERT() below)		\	 */						\	. = ALIGN(SZ_4K);				\	VMLINUX_SYMBOL(__hyp_idmap_text_start) = .;	\	*(.hyp.idmap.text)				\	VMLINUX_SYMBOL(__hyp_idmap_text_end) = .;	\	VMLINUX_SYMBOL(__hyp_text_start) = .;		\	*(.hyp.text)					\	VMLINUX_SYMBOL(__hyp_text_end) = .; #define IDMAP_TEXT					\	. = ALIGN(SZ_4K);				\	VMLINUX_SYMBOL(__idmap_text_start) = .;		\	*(.idmap.text)					\	VMLINUX_SYMBOL(__idmap_text_end) = .; /* * The size of the PE/COFF section that covers the kernel image, which * runs from stext to _edata, must be a round multiple of the PE/COFF * FileAlignment, which we set to its minimum value of 0x200. 'stext' * itself is 4 KB aligned, so padding out _edata to a 0x200 aligned * boundary should be sufficient. */PECOFF_FILE_ALIGNMENT = 0x200; #ifdef CONFIG_EFI#define PECOFF_EDATA_PADDING	\	.pecoff_edata_padding : { BYTE(0); . = ALIGN(PECOFF_FILE_ALIGNMENT); }#else#define PECOFF_EDATA_PADDING#endif #ifdef CONFIG_DEBUG_ALIGN_RODATA#define ALIGN_DEBUG_RO			. = ALIGN(1<<SECTION_SHIFT);#define ALIGN_DEBUG_RO_MIN(min)		ALIGN_DEBUG_RO#else#define ALIGN_DEBUG_RO#define ALIGN_DEBUG_RO_MIN(min)		. = ALIGN(min);#endif SECTIONS{	/*	 * XXX: The linker does not define how output sections are	 * assigned to input sections when there are multiple statements	 * matching the same input section name.  There is no documented	 * order of matching.	 */	/DISCARD/ : {		ARM_EXIT_DISCARD(EXIT_TEXT)		ARM_EXIT_DISCARD(EXIT_DATA)		EXIT_CALL		*(.discard)		*(.discard.*)	} 	. = PAGE_OFFSET + TEXT_OFFSET; 	.head.text : {		_text = .;		HEAD_TEXT	}	ALIGN_DEBUG_RO	.text : {			/* Real text segment		*/		_stext = .;		/* Text and read-only data	*/			__exception_text_start = .;			*(.exception.text)			__exception_text_end = .;			IRQENTRY_TEXT			TEXT_TEXT			SCHED_TEXT			LOCK_TEXT			HYPERVISOR_TEXT			IDMAP_TEXT			*(.fixup)			*(.gnu.warning)		. = ALIGN(16);		*(.got)			/* Global offset table		*/	} 	ALIGN_DEBUG_RO	RO_DATA(PAGE_SIZE)	EXCEPTION_TABLE(8)	NOTES	ALIGN_DEBUG_RO	_etext = .;			/* End of text and rodata section */ 	ALIGN_DEBUG_RO_MIN(PAGE_SIZE)	__init_begin = .; 	INIT_TEXT_SECTION(8)	.exit.text : {		ARM_EXIT_KEEP(EXIT_TEXT)	} 	ALIGN_DEBUG_RO_MIN(16)	.init.data : {		INIT_DATA		INIT_SETUP(16)		INIT_CALLS		CON_INITCALL		SECURITY_INITCALL		INIT_RAM_FS	}	.exit.data : {		ARM_EXIT_KEEP(EXIT_DATA)	} 	PERCPU_SECTION(64) 	. = ALIGN(PAGE_SIZE);	__init_end = .; 	. = ALIGN(4);	.altinstructions : {		__alt_instructions = .;		*(.altinstructions)		__alt_instructions_end = .;	}	.altinstr_replacement : {		*(.altinstr_replacement)	} 	. = ALIGN(PAGE_SIZE);	_data = .;	_sdata = .;	RW_DATA_SECTION(64, PAGE_SIZE, THREAD_SIZE)	PECOFF_EDATA_PADDING	_edata = .; 	BSS_SECTION(0, 0, 0) 	. = ALIGN(PAGE_SIZE);	idmap_pg_dir = .;	. += IDMAP_DIR_SIZE;	swapper_pg_dir = .;	. += SWAPPER_DIR_SIZE; 	_end = .; 	STABS_DEBUG 	HEAD_SYMBOLS} /* * The HYP init code and ID map text can't be longer than a page each, * and should not cross a page boundary. */ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & ~(SZ_4K - 1)) <= SZ_4K,	"HYP init code too big or misaligned")ASSERT(__idmap_text_end - (__idmap_text_start & ~(SZ_4K - 1)) <= SZ_4K,	"ID map text too big or misaligned") /* * If padding is applied before .head.text, virt<->phys conversions will fail. */ASSERT(_text == (PAGE_OFFSET + TEXT_OFFSET), "HEAD is misaligned")