Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef __S390_EXTABLE_H
2#define __S390_EXTABLE_H
3/*
4 * The exception table consists of pairs of addresses: the first is the
5 * address of an instruction that is allowed to fault, and the second is
6 * the address at which the program should continue. No registers are
7 * modified, so it is entirely up to the continuation code to figure out
8 * what to do.
9 *
10 * All the routines below use bits of fixup code that are out of line
11 * with the main instruction path. This means when everything is well,
12 * we don't even have to jump over them. Further, they do not intrude
13 * on our cache or tlb entries.
14 */
15
16struct exception_table_entry
17{
18 int insn, fixup;
19};
20
21static inline unsigned long extable_fixup(const struct exception_table_entry *x)
22{
23 return (unsigned long)&x->fixup + x->fixup;
24}
25
26#define ARCH_HAS_RELATIVE_EXTABLE
27
28#endif