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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_EXTABLE_H
#define __ASM_EXTABLE_H
#include <linux/stringify.h>
#include <asm/asm-const.h>
#define EX_TYPE_NONE 0
#define EX_TYPE_FIXUP 1
#define EX_TYPE_BPF 2
#define EX_TYPE_UACCESS 3
#define __EX_TABLE(_section, _fault, _target, _type) \
stringify_in_c(.section _section,"a";) \
stringify_in_c(.align 4;) \
stringify_in_c(.long (_fault) - .;) \
stringify_in_c(.long (_target) - .;) \
stringify_in_c(.short (_type);) \
stringify_in_c(.short 0;) \
stringify_in_c(.previous)
#define __EX_TABLE_UA(_section, _fault, _target, _type, _reg) \
stringify_in_c(.section _section,"a";) \
stringify_in_c(.align 4;) \
stringify_in_c(.long (_fault) - .;) \
stringify_in_c(.long (_target) - .;) \
stringify_in_c(.short (_type);) \
stringify_in_c(.macro extable_reg reg;) \
stringify_in_c(.set .Lfound, 0;) \
stringify_in_c(.set .Lregnr, 0;) \
stringify_in_c(.irp rs,r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,r13,r14,r15;) \
stringify_in_c(.ifc "\reg", "%%\rs";) \
stringify_in_c(.set .Lfound, 1;) \
stringify_in_c(.short .Lregnr;) \
stringify_in_c(.endif;) \
stringify_in_c(.set .Lregnr, .Lregnr+1;) \
stringify_in_c(.endr;) \
stringify_in_c(.ifne (.Lfound != 1);) \
stringify_in_c(.error "extable_reg: bad register argument";) \
stringify_in_c(.endif;) \
stringify_in_c(.endm;) \
stringify_in_c(extable_reg _reg;) \
stringify_in_c(.purgem extable_reg;) \
stringify_in_c(.previous)
#define EX_TABLE(_fault, _target) \
__EX_TABLE(__ex_table, _fault, _target, EX_TYPE_FIXUP)
#define EX_TABLE_AMODE31(_fault, _target) \
__EX_TABLE(.amode31.ex_table, _fault, _target, EX_TYPE_FIXUP)
#define EX_TABLE_UA(_fault, _target, _reg) \
__EX_TABLE_UA(__ex_table, _fault, _target, EX_TYPE_UACCESS, _reg)
#endif /* __ASM_EXTABLE_H */
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