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add asm-generic/extable.h

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... and make the users of generic uaccess.h use that.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-12-25 01:22:09 -05:00
parent 444f02c458
commit aaa2e7ac80
10 changed files with 34 additions and 22 deletions
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26
include/asm-generic/extable.h Normal file
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#ifndef __ASM_GENERIC_EXTABLE_H
#define __ASM_GENERIC_EXTABLE_H
/*
* The exception table consists of pairs of addresses: the first is the
* address of an instruction that is allowed to fault, and the second is
* the address 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
{
unsigned long insn, fixup;
};
struct pt_regs;
extern int fixup_exception(struct pt_regs *regs);
#endif