mips: add native backtrace implementation

Should make debugging crashes on native MIPS targets far easier.
This is by no means a 100% complete or robust implementation but
it seems to handle the vast majority of functions.

Change-Id: Id5f430270e02b5092b79026b6876675c784aa649

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/mipsunwinder/mipsunwinder.make b/lib/mipsunwinder/mipsunwinder.make
new file mode 100644
index 0000000000..ddd1ce078f
--- /dev/null
+++ b/lib/mipsunwinder/mipsunwinder.make
@@ -0,0 +1,23 @@
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+#
+
+MIPSUNWINDERLIB_DIR = $(ROOTDIR)/lib/mipsunwinder
+MIPSUNWINDERLIB_SRC = $(call preprocess, $(MIPSUNWINDERLIB_DIR)/SOURCES)
+MIPSUNWINDERLIB_OBJ := $(call c2obj, $(MIPSUNWINDERLIB_SRC))
+
+OTHER_SRC += $(MIPSUNWINDERLIB_SRC)
+
+MIPSUNWINDERLIB = $(BUILDDIR)/lib/libmipsunwinder.a
+CORE_LIBS += $(MIPSUNWINDERLIB)
+
+INCLUDES += -I$(MIPSUNWINDERLIB_DIR)
+DEFINES += -DBACKTRACE_MIPSUNWINDER
+
+$(MIPSUNWINDERLIB): $(MIPSUNWINDERLIB_OBJ)
+        $(SILENT)$(shell rm -f $@)
+        $(call PRINTS,AR $(@F))$(AR) rcs $@ $^ >/dev/null