[PATCH v2 2/6] arm64: Add regs_return_value() in syscall.h
This macro is used mainly for audit to record system call's results, but
may also be used in test_kprobes.c.
Signed-off-by: AKASHI Takahiro <takahiro.akashi(a)linaro.org>
---
arch/arm64/include/asm/ptrace.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
index 0e7fa49..5800ec1 100644
--- a/arch/arm64/include/asm/ptrace.h
+++ b/arch/arm64/include/asm/ptrace.h
@@ -134,6 +134,11 @@ struct pt_regs {
#define user_stack_pointer(regs) \
((regs)->sp)
+static inline unsigned long regs_return_value(struct pt_regs *regs)
+{
+ return regs->regs[0];
+}
+
/*
* Are the current registers suitable for user mode? (used to maintain
* security in signal handlers)
--
1.7.9.5