Commit 46583939 authored by Al Viro's avatar Al Viro
Browse files

arm64: add extable.h



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent d597580d
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#ifndef __ASM_EXTABLE_H
#define __ASM_EXTABLE_H

/*
 * The exception table consists of pairs of relative offsets: the first
 * is the relative offset to an instruction that is allowed to fault,
 * and the second is the relative offset 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
{
	int insn, fixup;
};

#define ARCH_HAS_RELATIVE_EXTABLE

extern int fixup_exception(struct pt_regs *regs);
#endif
+1 −22
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@@ -33,28 +33,7 @@
#include <asm/ptrace.h>
#include <asm/memory.h>
#include <asm/compiler.h>

/*
 * The exception table consists of pairs of relative offsets: the first
 * is the relative offset to an instruction that is allowed to fault,
 * and the second is the relative offset 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
{
	int insn, fixup;
};

#define ARCH_HAS_RELATIVE_EXTABLE

extern int fixup_exception(struct pt_regs *regs);
#include <asm/extable.h>

#define KERNEL_DS	(-1UL)
#define get_ds()	(KERNEL_DS)