xref: /openbmc/linux/arch/powerpc/kernel/jump_label.c (revision d3964221)
1 /*
2  * Copyright 2010 Michael Ellerman, IBM Corp.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version
7  * 2 of the License, or (at your option) any later version.
8  */
9 
10 #include <linux/kernel.h>
11 #include <linux/jump_label.h>
12 #include <asm/code-patching.h>
13 
14 #ifdef HAVE_JUMP_LABEL
15 void arch_jump_label_transform(struct jump_entry *entry,
16 			       enum jump_label_type type)
17 {
18 	u32 *addr = (u32 *)(unsigned long)entry->code;
19 
20 	if (type == JUMP_LABEL_JMP)
21 		patch_branch(addr, entry->target, 0);
22 	else
23 		patch_instruction(addr, PPC_INST_NOP);
24 }
25 #endif
26