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37 lines
694 B
37 lines
694 B
#ifndef _ASM_X86_JUMP_LABEL_H
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#define _ASM_X86_JUMP_LABEL_H
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#ifdef __KERNEL__
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#include <linux/types.h>
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#include <asm/nops.h>
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#define JUMP_LABEL_NOP_SIZE 5
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# define JUMP_LABEL_INITIAL_NOP ".byte 0xe9 \n\t .long 0\n\t"
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# define JUMP_LABEL(key, label) \
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do { \
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asm goto("1:" \
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JUMP_LABEL_INITIAL_NOP \
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".pushsection __jump_table, \"a\" \n\t"\
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_ASM_PTR "1b, %l[" #label "], %c0 \n\t" \
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".popsection \n\t" \
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: : "i" (key) : : label); \
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} while (0)
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#endif /* __KERNEL__ */
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#ifdef CONFIG_X86_64
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typedef u64 jump_label_t;
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#else
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typedef u32 jump_label_t;
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#endif
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struct jump_entry {
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jump_label_t code;
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jump_label_t target;
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jump_label_t key;
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};
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#endif
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