https://github.com/torvalds/linux
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Tip revision: 06c2afb862f9da8dc5efa4b6076a0e48c3fbaaa5 authored by Linus Torvalds on 09 July 2023, 20:53:13 UTC
Linux 6.5-rc1
Tip revision: 06c2afb
fault.c
/* 
 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */

#include <sysdep/ptrace.h>

/* These two are from asm-um/uaccess.h and linux/module.h, check them. */
struct exception_table_entry
{
	unsigned long insn;
	unsigned long fixup;
};

const struct exception_table_entry *search_exception_tables(unsigned long add);

/* Compare this to arch/i386/mm/extable.c:fixup_exception() */
int arch_fixup(unsigned long address, struct uml_pt_regs *regs)
{
	const struct exception_table_entry *fixup;

	fixup = search_exception_tables(address);
	if (fixup) {
		UPT_IP(regs) = fixup->fixup;
		return 1;
	}
	return 0;
}
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