/* 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 #ifdef CONFIG_BPF_JIT int arm64_bpf_fixup_exception(const struct exception_table_entry *ex, struct pt_regs *regs); #else /* !CONFIG_BPF_JIT */ static inline int arm64_bpf_fixup_exception(const struct exception_table_entry *ex, struct pt_regs *regs) { return 0; } #endif /* !CONFIG_BPF_JIT */ extern int fixup_exception(struct pt_regs *regs); #endif