From 0ea2dc7cd668be5475babecaf6fdeaa464e2847b Mon Sep 17 00:00:00 2001
From: Guo Ren <ren_guo@c-sky.com>
Date: Sun, 9 Dec 2018 14:18:05 +0800
Subject: csky: stacktrace supported.

The gcc option "-mbacktrace" will push fp(r8),lr into stack and we could
unwind the stack with:
	fp = *fp
	lr = (unsigned int *)fp[1]

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
---
 arch/csky/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'arch/csky/Makefile')

diff --git a/arch/csky/Makefile b/arch/csky/Makefile
index c639fc167895..3607a6e8f66c 100644
--- a/arch/csky/Makefile
+++ b/arch/csky/Makefile
@@ -47,6 +47,10 @@ ifeq ($(CSKYABI),abiv2)
 KBUILD_CFLAGS += -mno-stack-size
 endif
 
+ifdef CONFIG_STACKTRACE
+KBUILD_CFLAGS += -mbacktrace
+endif
+
 abidirs := $(patsubst %,arch/csky/%/,$(CSKYABI))
 KBUILD_CFLAGS += $(patsubst %,-I$(srctree)/%inc,$(abidirs))
 
-- 
cgit