51 lines
962 B
C
51 lines
962 B
C
|
/*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
||
|
|
* License. See the file "COPYING" in the main directory of this archive
|
||
|
|
* for more details.
|
||
|
|
*
|
||
|
|
* Copyright (c) 2010 Cavium Networks, Inc.
|
||
|
|
*/
|
||
|
|
#ifndef _ASM_MIPS_JUMP_LABEL_H
|
||
|
|
#define _ASM_MIPS_JUMP_LABEL_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
|
||
|
|
#define JUMP_LABEL_NOP_SIZE 4
|
||
|
|
|
||
|
|
#ifdef CONFIG_64BIT
|
||
|
|
#define WORD_INSN ".dword"
|
||
|
|
#else
|
||
|
|
#define WORD_INSN ".word"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static __always_inline bool arch_static_branch(struct static_key *key)
|
||
|
|
{
|
||
|
|
asm goto("1:\tnop\n\t"
|
||
|
|
"nop\n\t"
|
||
|
|
".pushsection __jump_table, \"aw\"\n\t"
|
||
|
|
WORD_INSN " 1b, %l[l_yes], %0\n\t"
|
||
|
|
".popsection\n\t"
|
||
|
|
: : "i" (key) : : l_yes);
|
||
|
|
return false;
|
||
|
|
l_yes:
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
|
||
|
|
#ifdef CONFIG_64BIT
|
||
|
|
typedef u64 jump_label_t;
|
||
|
|
#else
|
||
|
|
typedef u32 jump_label_t;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct jump_entry {
|
||
|
|
jump_label_t code;
|
||
|
|
jump_label_t target;
|
||
|
|
jump_label_t key;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* _ASM_MIPS_JUMP_LABEL_H */
|