[MIPS] Do not use compact branches until GDB supports them
GDB does not yet have support for compact branches, and is not able
to set a breakpoint on rtld_db_dlactivity(), which is compiled into
one JIC instruction. Unfortunately, We cannot turn off generation of
JIC compact branch. Instead, add unoptimized FP handling code, so GDB
will have something to land on.
Change-Id: Iddcf40ec018972398179018d049b8323fcd258b7
diff --git a/linker/Android.mk b/linker/Android.mk
index 4a7da76..dd43390 100644
--- a/linker/Android.mk
+++ b/linker/Android.mk
@@ -38,6 +38,16 @@
LOCAL_CFLAGS_arm += -D__work_around_b_19059885__
LOCAL_CFLAGS_x86 += -D__work_around_b_19059885__
+# For mips r6 (both 32bit and 64bit), GDB cannot stop on a breakpoint
+# if rt.cpp is compiled with compact branches optimization.
+# Unfortunately, we cannot turn generation of JIC compact branch off,
+# but we can add unoptimized code which will allow GDB to insert a
+# breakpoint on it.
+# TODO: Remove this after GDB is fixed.
+ifeq ($(TARGET_ARCH),mips64)
+LOCAL_CFLAGS += -fno-omit-frame-pointer
+endif
+
LOCAL_CONLYFLAGS += \
-std=gnu99 \
