projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 94bb0c1a DD |
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 | ||
| c5905afb | 23 | static __always_inline bool arch_static_branch(struct static_key *key) |
| d430d3d7 | 24 | { |
| 3f0116c3 | 25 | asm_volatile_goto("1:\tnop\n\t" |
| d430d3d7 JB |
26 | "nop\n\t" |
| 27 | ".pushsection __jump_table, \"aw\"\n\t" | |
| 28 | WORD_INSN " 1b, %l[l_yes], %0\n\t" | |
| 29 | ".popsection\n\t" | |
| 30 | : : "i" (key) : : l_yes); | |
| 31 | return false; | |
| 32 | l_yes: | |
| 33 | return true; | |
| 34 | } | |
| 94bb0c1a DD |
35 | |
| 36 | #endif /* __KERNEL__ */ | |
| 37 | ||
| 38 | #ifdef CONFIG_64BIT | |
| 39 | typedef u64 jump_label_t; | |
| 40 | #else | |
| 41 | typedef u32 jump_label_t; | |
| 42 | #endif | |
| 43 | ||
| 44 | struct jump_entry { | |
| 45 | jump_label_t code; | |
| 46 | jump_label_t target; | |
| 47 | jump_label_t key; | |
| 48 | }; | |
| 49 | ||
| 50 | #endif /* _ASM_MIPS_JUMP_LABEL_H */ |