projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 09f05d85 RV |
1 | #ifndef _ASM_ARM_JUMP_LABEL_H |
| 2 | #define _ASM_ARM_JUMP_LABEL_H | |
| 3 | ||
| 55dd0df7 | 4 | #ifndef __ASSEMBLY__ |
| 09f05d85 RV |
5 | |
| 6 | #include <linux/types.h> | |
| 11276d53 | 7 | #include <asm/unified.h> |
| 09f05d85 RV |
8 | |
| 9 | #define JUMP_LABEL_NOP_SIZE 4 | |
| 10 | ||
| 11276d53 PZ |
11 | static __always_inline bool arch_static_branch(struct static_key *key, bool branch) |
| 12 | { | |
| 13 | asm_volatile_goto("1:\n\t" | |
| 14 | WASM(nop) "\n\t" | |
| 15 | ".pushsection __jump_table, \"aw\"\n\t" | |
| 16 | ".word 1b, %l[l_yes], %c0\n\t" | |
| 17 | ".popsection\n\t" | |
| 18 | : : "i" (&((char *)key)[branch]) : : l_yes); | |
| 19 | ||
| 20 | return false; | |
| 21 | l_yes: | |
| 22 | return true; | |
| 23 | } | |
| 09f05d85 | 24 | |
| 11276d53 | 25 | static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) |
| 09f05d85 | 26 | { |
| 3f0116c3 | 27 | asm_volatile_goto("1:\n\t" |
| 11276d53 | 28 | WASM(b) " %l[l_yes]\n\t" |
| 09f05d85 RV |
29 | ".pushsection __jump_table, \"aw\"\n\t" |
| 30 | ".word 1b, %l[l_yes], %c0\n\t" | |
| 31 | ".popsection\n\t" | |
| 11276d53 | 32 | : : "i" (&((char *)key)[branch]) : : l_yes); |
| 09f05d85 RV |
33 | |
| 34 | return false; | |
| 35 | l_yes: | |
| 36 | return true; | |
| 37 | } | |
| 38 | ||
| 09f05d85 RV |
39 | typedef u32 jump_label_t; |
| 40 | ||
| 41 | struct jump_entry { | |
| 42 | jump_label_t code; | |
| 43 | jump_label_t target; | |
| 44 | jump_label_t key; | |
| 45 | }; | |
| 46 | ||
| 55dd0df7 | 47 | #endif /* __ASSEMBLY__ */ |
| 09f05d85 | 48 | #endif |