Add two helpers to avoid hardcoding of instructions modifications.
Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
---
arch/powerpc/include/asm/code-patching.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/powerpc/include/asm/code-patching.h
b/arch/powerpc/include/asm/code-patching.h
index 0eeed21e4898..2074b40f3fb5 100644
--- a/arch/powerpc/include/asm/code-patching.h
+++ b/arch/powerpc/include/asm/code-patching.h
@@ -49,6 +49,17 @@ static inline int patch_branch_site(s32 *site, unsigned long
target, int flags)
return patch_branch((unsigned int *)patch_site_addr(site), target,
flags);
}
+static inline int modify_instruction(unsigned int *addr, unsigned int clr,
+ unsigned int set)
+{
+ return patch_instruction(addr, (*addr & ~clr) | set);
+}
+
+static inline int modify_instruction_site(s32 *site, unsigned int clr,
unsigned int set)
+{
+ return modify_instruction((unsigned int *)patch_site_addr(site), clr,
set);
+}
+
int instr_is_relative_branch(unsigned int instr);
int instr_is_relative_link_branch(unsigned int instr);
int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr);
--
2.13.3
