1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef __ASM_ASM_EXTABLE_H 3 #define __ASM_ASM_EXTABLE_H 4 5 #define EX_TYPE_NONE 0 6 #define EX_TYPE_FIXUP 1 7 #define EX_TYPE_BPF 2 8 9 #ifdef __ASSEMBLY__ 10 11 #define __ASM_EXTABLE_RAW(insn, fixup, type, data) \ 12 .pushsection __ex_table, "a"; \ 13 .balign 4; \ 14 .long ((insn) - .); \ 15 .long ((fixup) - .); \ 16 .short (type); \ 17 .short (data); \ 18 .popsection; 19 20 .macro _asm_extable, insn, fixup 21 __ASM_EXTABLE_RAW(\insn, \fixup, EX_TYPE_FIXUP, 0) 22 .endm 23 24 #else /* __ASSEMBLY__ */ 25 26 #include <linux/stringify.h> 27 28 #define __ASM_EXTABLE_RAW(insn, fixup, type, data) \ 29 ".pushsection __ex_table, \"a\"\n" \ 30 ".balign 4\n" \ 31 ".long ((" insn ") - .)\n" \ 32 ".long ((" fixup ") - .)\n" \ 33 ".short (" type ")\n" \ 34 ".short (" data ")\n" \ 35 ".popsection\n" 36 37 #define _ASM_EXTABLE(insn, fixup) \ 38 __ASM_EXTABLE_RAW(#insn, #fixup, __stringify(EX_TYPE_FIXUP), "0") 39 40 #endif /* __ASSEMBLY__ */ 41 42 #endif /* __ASM_ASM_EXTABLE_H */ 43