| 1 | #include <linux/kernel.h> |
| 2 | #include <linux/types.h> |
| 3 | #include <linux/mutex.h> |
| 4 | #include <linux/cpu.h> |
| 5 | |
| 6 | #include <linux/jump_label.h> |
| 7 | #include <linux/memory.h> |
| 8 | |
| 9 | #include <asm/cacheflush.h> |
| 10 | |
| 11 | #ifdef HAVE_JUMP_LABEL |
| 12 | |
| 13 | void arch_jump_label_transform(struct jump_entry *entry, |
| 14 | enum jump_label_type type) |
| 15 | { |
| 16 | u32 val; |
| 17 | u32 *insn = (u32 *) (unsigned long) entry->code; |
| 18 | |
| 19 | if (type == JUMP_LABEL_ENABLE) { |
| 20 | s32 off = (s32)entry->target - (s32)entry->code; |
| 21 | |
| 22 | #ifdef CONFIG_SPARC64 |
| 23 | /* ba,pt %xcc, . + (off << 2) */ |
| 24 | val = 0x10680000 | ((u32) off >> 2); |
| 25 | #else |
| 26 | /* ba . + (off << 2) */ |
| 27 | val = 0x10800000 | ((u32) off >> 2); |
| 28 | #endif |
| 29 | } else { |
| 30 | val = 0x01000000; |
| 31 | } |
| 32 | |
| 33 | get_online_cpus(); |
| 34 | mutex_lock(&text_mutex); |
| 35 | *insn = val; |
| 36 | flushi(insn); |
| 37 | mutex_unlock(&text_mutex); |
| 38 | put_online_cpus(); |
| 39 | } |
| 40 | |
| 41 | #endif |