1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (c) 2010 Cavium Networks, Inc. 7 */ 8 #ifndef _ASM_MIPS_JUMP_LABEL_H 9 #define _ASM_MIPS_JUMP_LABEL_H 10 11 #include <linux/types.h> 12 13 #ifdef __KERNEL__ 14 15 #define JUMP_LABEL_NOP_SIZE 4 16 17 #ifdef CONFIG_64BIT 18 #define WORD_INSN ".dword" 19 #else 20 #define WORD_INSN ".word" 21 #endif 22 23 #define JUMP_LABEL(key, label) \ 24 do { \ 25 asm goto("1:\tnop\n\t" \ 26 "nop\n\t" \ 27 ".pushsection __jump_table, \"a\"\n\t" \ 28 WORD_INSN " 1b, %l[" #label "], %0\n\t" \ 29 ".popsection\n\t" \ 30 : : "i" (key) : : label); \ 31 } while (0) 32 33 34 #endif /* __KERNEL__ */ 35 36 #ifdef CONFIG_64BIT 37 typedef u64 jump_label_t; 38 #else 39 typedef u32 jump_label_t; 40 #endif 41 42 struct jump_entry { 43 jump_label_t code; 44 jump_label_t target; 45 jump_label_t key; 46 }; 47 48 #endif /* _ASM_MIPS_JUMP_LABEL_H */ 49