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sh: switch to extable.h

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-12-25 14:49:42 -05:00
parent d597580d37
commit bcd541d9a2
2 changed files with 11 additions and 22 deletions
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10
arch/sh/include/asm/extable.h Normal file
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@ -0,0 +1,10 @@
#ifndef __ASM_SH_EXTABLE_H
#define __ASM_SH_EXTABLE_H
#include <asm-generic/extable.h>
#if defined(CONFIG_SUPERH64) && defined(CONFIG_MMU)
#define ARCH_HAS_SEARCH_EXTABLE
#endif
#endif

23
arch/sh/include/asm/uaccess.h
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@ -2,6 +2,7 @@
#define __ASM_SH_UACCESS_H #define __ASM_SH_UACCESS_H
#include <asm/segment.h> #include <asm/segment.h>
#include <asm/extable.h>
#define __addr_ok(addr) \ #define __addr_ok(addr) \
((unsigned long __force)(addr) < current_thread_info()->addr_limit.seg) ((unsigned long __force)(addr) < current_thread_info()->addr_limit.seg)
@ -166,28 +167,6 @@ copy_to_user(void __user *to, const void *from, unsigned long n)
return __copy_size; return __copy_size;
} }
/*
* 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;
};
#if defined(CONFIG_SUPERH64) && defined(CONFIG_MMU)
#define ARCH_HAS_SEARCH_EXTABLE
#endif
int fixup_exception(struct pt_regs *regs);
extern void *set_exception_table_vec(unsigned int vec, void *handler); extern void *set_exception_table_vec(unsigned int vec, void *handler);
static inline void *set_exception_table_evt(unsigned int evt, void *handler) static inline void *set_exception_table_evt(unsigned int evt, void *handler)