28 lines
581 B
C
28 lines
581 B
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* Based on arch/arm/mm/extable.c
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/extable.h>
|
||
|
|
#include <linux/uaccess.h>
|
||
|
|
|
||
|
|
int fixup_exception(struct pt_regs *regs)
|
||
|
|
{
|
||
|
|
const struct exception_table_entry *fixup;
|
||
|
|
unsigned long addr;
|
||
|
|
|
||
|
|
addr = instruction_pointer(regs);
|
||
|
|
|
||
|
|
/* Search the BPF tables first, these are formatted differently */
|
||
|
|
fixup = search_bpf_extables(addr);
|
||
|
|
if (fixup)
|
||
|
|
return arm64_bpf_fixup_exception(fixup, regs);
|
||
|
|
|
||
|
|
fixup = search_exception_tables(addr);
|
||
|
|
if (!fixup)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
regs->pc = (unsigned long)&fixup->fixup + fixup->fixup;
|
||
|
|
return 1;
|
||
|
|
}
|