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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_RISCV_EXTABLE_H
#define _ASM_RISCV_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
bool fixup_exception(struct pt_regs *regs);
#if defined(CONFIG_BPF_JIT) && defined(CONFIG_ARCH_RV64I)
bool rv_bpf_fixup_exception(const struct exception_table_entry *ex, struct pt_regs *regs);
#else
static inline bool
rv_bpf_fixup_exception(const struct exception_table_entry *ex,
struct pt_regs *regs)
{
return false;
}
#endif
#endif
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