projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| dff9d3c2 DM |
2 | #ifndef _ASM_SPARC_JUMP_LABEL_H |
| 3 | #define _ASM_SPARC_JUMP_LABEL_H | |
| 4 | ||
| 55dd0df7 | 5 | #ifndef __ASSEMBLY__ |
| dff9d3c2 DM |
6 | |
| 7 | #include <linux/types.h> | |
| dff9d3c2 DM |
8 | |
| 9 | #define JUMP_LABEL_NOP_SIZE 4 | |
| 10 | ||
| 11276d53 | 11 | static __always_inline bool arch_static_branch(struct static_key *key, bool branch) |
| d430d3d7 | 12 | { |
| 11276d53 PZ |
13 | asm_volatile_goto("1:\n\t" |
| 14 | "nop\n\t" | |
| 15 | "nop\n\t" | |
| 16 | ".pushsection __jump_table, \"aw\"\n\t" | |
| 17 | ".align 4\n\t" | |
| 18 | ".word 1b, %l[l_yes], %c0\n\t" | |
| 19 | ".popsection \n\t" | |
| 20 | : : "i" (&((char *)key)[branch]) : : l_yes); | |
| 21 | ||
| 22 | return false; | |
| 23 | l_yes: | |
| 24 | return true; | |
| 25 | } | |
| 26 | ||
| 27 | static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) | |
| 28 | { | |
| 29 | asm_volatile_goto("1:\n\t" | |
| 30 | "b %l[l_yes]\n\t" | |
| 31 | "nop\n\t" | |
| 32 | ".pushsection __jump_table, \"aw\"\n\t" | |
| 33 | ".align 4\n\t" | |
| 34 | ".word 1b, %l[l_yes], %c0\n\t" | |
| 35 | ".popsection \n\t" | |
| 36 | : : "i" (&((char *)key)[branch]) : : l_yes); | |
| 37 | ||
| d430d3d7 JB |
38 | return false; |
| 39 | l_yes: | |
| 40 | return true; | |
| 41 | } | |
| dff9d3c2 | 42 | |
| dff9d3c2 DM |
43 | typedef u32 jump_label_t; |
| 44 | ||
| 45 | struct jump_entry { | |
| 46 | jump_label_t code; | |
| 47 | jump_label_t target; | |
| 48 | jump_label_t key; | |
| 49 | }; | |
| 50 | ||
| 55dd0df7 | 51 | #endif /* __ASSEMBLY__ */ |
| dff9d3c2 | 52 | #endif |