os_test: C++: disable profiling (-pg)

os_test includes C++ exception tests which are incompatible with ftrace by design [1]. This commit makes sure the C++ tests are not compiled with the profiling flag (-pg), which is the flag that one would use to enable function tracing in TAs. Link: [1] OP-TEE/optee_os#4022 Signed-off-by: Jerome Forissier <[email protected]> Acked-by: Jens Wiklander <[email protected]>
OP-TEE · Aug 14, 2020 · d57b084 · d57b084
1 parent 58e3a83
commit d57b084
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/ta/os_test/sub.mk b/ta/os_test/sub.mk
@@ -9,6 +9,12 @@ srcs-y += os_test.c
 srcs-y += ta_entry.c
 srcs-$(CFG_TA_FLOAT_SUPPORT) += test_float_subj.c
 ifneq ($(COMPILER),clang)
+# Profiling (-pg) is disabled for C++ tests because in case it is used for
+# function tracing (CFG_FTRACE_SUPPORT=y) then the exception handling code in
+# the C++ runtime won't be able to unwind the (modified) stack.
+# https://github.com/OP-TEE/optee_os/issues/4022
 srcs-y += cxx_tests.cpp
+cxxflags-remove-cxx_tests.cpp-y += -pg
 srcs-y += cxx_tests_c.c
+cflags-remove-cxx_tests_c.c-y += -pg
 endif