From 36b08b431e2e282f78d09921ca55652d2c55eee5 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Fri, 9 Nov 2018 17:33:17 +0000 Subject: [PATCH] powerpc: add modify_instruction() and modify_instruction_site() Add two helpers to avoid hardcoding of instructions modifications. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman --- 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); -- 2.30.2