backtrace: Extract rules from root Makefile
It's better to have them in a separate file instead of having them spread
across the Makefile. This is what the stack protector is already doing.
Change-Id: Id30742c0af10de5ea6d10674ca25bf52b0f2b262
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/common/backtrace.c b/common/backtrace/backtrace.c
similarity index 100%
rename from common/backtrace.c
rename to common/backtrace/backtrace.c
diff --git a/common/backtrace/backtrace.mk b/common/backtrace/backtrace.mk
new file mode 100644
index 0000000..e669331
--- /dev/null
+++ b/common/backtrace/backtrace.mk
@@ -0,0 +1,31 @@
+#
+# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+# Enable backtrace by default in DEBUG AArch64 builds
+ifeq (${ARCH},aarch32)
+ ENABLE_BACKTRACE := 0
+else
+ ENABLE_BACKTRACE := ${DEBUG}
+endif
+
+ifeq (${ENABLE_BACKTRACE},1)
+ # Force the compiler to include the frame pointer
+ TF_CFLAGS += -fno-omit-frame-pointer
+
+ BL_COMMON_SOURCES += common/backtrace/backtrace.c
+endif
+
+ifeq (${ARCH},aarch32)
+ ifeq (${ENABLE_BACKTRACE},1)
+ ifneq (${AARCH32_INSTRUCTION_SET},A32)
+ $(error Error: AARCH32_INSTRUCTION_SET=A32 is needed \
+ for ENABLE_BACKTRACE when compiling for AArch32.)
+ endif
+ endif
+endif
+
+$(eval $(call assert_boolean,ENABLE_BACKTRACE))
+$(eval $(call add_define,ENABLE_BACKTRACE))