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[v2,2/6] arm64: Add regs_return_value() in syscall.h

Message ID 1389946399-4525-3-git-send-email-takahiro.akashi@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

AKASHI Takahiro Jan. 17, 2014, 8:13 a.m. UTC 
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@linaro.org>
---
 arch/arm64/include/asm/ptrace.h |    5 +++++
 1 file changed, 5 insertions(+)
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Patch

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)