1 #ifndef _ARCH_POWERPC_EXTABLE_H
2 #define _ARCH_POWERPC_EXTABLE_H
5 * The exception table consists of pairs of relative addresses: the first is
6 * the address of an instruction that is allowed to fault, and the second is
7 * the address at which the program should continue. No registers are
8 * modified, so it is entirely up to the continuation code to figure out what
11 * All the routines below use bits of fixup code that are out of line with the
12 * main instruction path. This means when everything is well, we don't even
13 * have to jump over them. Further, they do not intrude on our cache or tlb
17 #define ARCH_HAS_RELATIVE_EXTABLE
19 struct exception_table_entry {
24 static inline unsigned long extable_fixup(const struct exception_table_entry *x)
26 return (unsigned long)&x->fixup + x->fixup;