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