linux-kernel - [RFC 4/8] ARM64: Add instruction_pointer

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Message-Id: <028aab951a24c56075b1060afa1c2b2d88c09083.1420038188.git.panand@redhat.com>
Date:	Wed, 31 Dec 2014 20:51:20 +0530
From:	Pratyush Anand <panand@...hat.com>
To:	linux-arm-kernel@...ts.infradead.org, linux@....linux.org.uk
Cc:	tixy@...aro.org, ananth@...ibm.com, sandeepa.prabhu@...aro.org,
	catalin.marinas@....com, will.deacon@....com,
	linux-kernel@...r.kernel.org, anil.s.keshavamurthy@...el.com,
	masami.hiramatsu.pt@...achi.com, wcohen@...hat.com,
	oleg@...hat.com, Pratyush Anand <panand@...hat.com>
Subject: [RFC 4/8] ARM64: Add instruction_pointer_set function

instruction_pointer_set is needed for uprobe implementation. Hence
define it for ARM64.

Signed-off-by: Pratyush Anand <panand@...hat.com>
---
 arch/arm64/include/asm/ptrace.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
index 24cc048ac3e7..29d9bf5e3635 100644
--- a/arch/arm64/include/asm/ptrace.h
+++ b/arch/arm64/include/asm/ptrace.h
@@ -206,6 +206,12 @@ static inline int valid_user_regs(struct user_pt_regs *regs)
 #define instruction_pointer(regs)	((regs)->pc)
 #define stack_pointer(regs)		((regs)->sp)
 
+static inline void instruction_pointer_set(struct pt_regs *regs,
+					   unsigned long val)
+{
+	instruction_pointer(regs) = val;
+}
+
 #ifdef CONFIG_SMP
 extern unsigned long profile_pc(struct pt_regs *regs);
 #else
-- 
2.1.0

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