[linux-block.git] / arch / arm64 / include / asm / extable.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_EXTABLE_H
#define __ASM_EXTABLE_H

/*
 * The exception table consists of pairs of relative offsets: the first
 * is the relative offset to an instruction that is allowed to fault,
 * and the second is the relative offset at which the program should
 * continue. No registers are modified, so it is entirely up to the
 * continuation code to figure out what to do.
 *
 * All the routines below use bits of fixup code that are out of line
 * with the main instruction path.  This means when everything is well,
 * we don't even have to jump over them.  Further, they do not intrude
 * on our cache or tlb entries.
 */

struct exception_table_entry
{
	int insn, fixup;
};

#define ARCH_HAS_RELATIVE_EXTABLE

extern int fixup_exception(struct pt_regs *regs);
#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
46583939 AV	2	#ifndef __ASM_EXTABLE_H
	3	#define __ASM_EXTABLE_H
	4
	5	/*
	6	* The exception table consists of pairs of relative offsets: the first
	7	* is the relative offset to an instruction that is allowed to fault,
	8	* and the second is the relative offset at which the program should
	9	* continue. No registers are modified, so it is entirely up to the
	10	* continuation code to figure out what to do.
	11	*
	12	* All the routines below use bits of fixup code that are out of line
	13	* with the main instruction path. This means when everything is well,
	14	* we don't even have to jump over them. Further, they do not intrude
	15	* on our cache or tlb entries.
	16	*/
	17
	18	struct exception_table_entry
	19	{
	20	int insn, fixup;
	21	};
	22
	23	#define ARCH_HAS_RELATIVE_EXTABLE
	24
	25	extern int fixup_exception(struct pt_regs *regs);
	26	#endif