1 # SPDX-License-Identifier: GPL-2.0-only
3 # This file contains common definitions, macros and targets for depthcharge
4 # unit-tests and screenshot utility. It requires list of defined variables:
5 # - src - source directory
6 # - testobj - build directory of tests
7 # - objutil - utility programs/libraries output directory
9 testsrc := $(top)/tests
11 cmockasrc := 3rdparty/cmocka
12 cmockaobj := $(objutil)/cmocka
13 coverage_dir := coverage_reports
15 CMOCKA_LIB := $(cmockaobj)/src/libcmocka.so
21 TEST_DEFAULT_CONFIG ?= $(top)/configs/config.emulation_qemu_x86_i440fx
22 TEST_DOTCONFIG := $(testobj)/.config
23 TEST_KCONFIG_AUTOHEADER := $(testobj)/config.src.h
24 TEST_KCONFIG_AUTOCONFIG := $(testobj)/auto.conf
25 TEST_KCONFIG_DEPENDENCIES := $(testobj)/auto.conf.cmd
26 TEST_KCONFIG_SPLITCONFIG := $(testobj)/config/
27 TEST_KCONFIG_TRISTATE := $(testobj)/tristate.conf
29 # Include order should be same as in real build
30 TEST_INCLUDES := -include $(src)/include/kconfig.h \
31 -include $(src)/include/rules.h \
32 -include $(src)/commonlib/bsd/include/commonlib/bsd/compiler.h
34 # Include generic test mock headers, before original ones
35 TEST_INCLUDES += -I$(testsrc)/include/mocks -I$(testsrc)/include
37 TEST_INCLUDES += -I$(src) -I$(src)/include -I$(src)/commonlib/include \
38 -I$(src)/commonlib/bsd/include -I$(src)/arch/x86/include \
39 -I$(top)/3rdparty/vboot/firmware/include
41 # Path for Kconfig autoheader
42 TEST_INCLUDES += -I$(dir $(TEST_KCONFIG_AUTOHEADER))
44 # Note: This is intentionally just a subset of the warnings in the toplevel
45 # Makefile.mk. We don't need to be as strict with test code, and things like
46 # -Wmissing-prototypes just make working with the test framework cumbersome.
47 # Only put conservative warnings here that really detect code that's obviously
49 TEST_CFLAGS += -Wall -Werror -Wundef -Wstrict-prototypes -Wno-inline-asm
50 TEST_CFLAGS += -Wno-unknown-warning-option -Wno-source-mgr -Wno-main-return-type
51 TEST_CFLAGS += -Wno-array-compare -Wno-packed-not-aligned -Wno-trigraphs
52 TEST_CFLAGS += -Wno-unused-but-set-variables
54 TEST_CFLAGS += -std=gnu11 -ffunction-sections -fdata-sections -fno-builtin
56 ifneq ($(filter-out 0,$(DEBUG)),)
57 TEST_CFLAGS += -Og -ggdb3
62 TEST_CFLAGS += -D__TEST__ -D__COREBOOT__
63 TEST_CFLAGS += -D__TEST_DATA_DIR__=\"$(testsrc)/data\"
65 ifneq ($(filter-out 0,$(TEST_PRINT)),)
66 TEST_CFLAGS += -DTEST_PRINT=1
69 TEST_LDFLAGS += -Wl,--gc-sections
71 # Some memlayout symbols don't work with userspace relocation -- disable it.
72 TEST_CFLAGS += -fno-pie -fno-pic
73 TEST_LDFLAGS += -no-pie
75 # Extra attributes for unit tests, declared per test
76 # srcs - sources linked with coreboot libc symbols
77 # syssrcs - sources linked with system libc, no coreboot includes
78 # cflags - attribute with additional CFLAGS
79 # config - Kconfig and defines override (`gcc -D` style)
80 # mocks - list of symbols to mock
81 # no_test_framework - set to `1` not to link test framework
82 # stage - name of stage e.g. romstage, bootblock, etc.
83 attributes := srcs syssrcs cflags config mocks no_test_framework stage
85 # Copy attributes of one test to another.
86 # $1 - input test name
87 # $2 - output test name
88 copy-test = $(foreach attr,$(attributes), \
89 $(eval $(strip $(2))-$(attr) := $($(strip $(1))-$(attr))))
91 # Create actual targets for unit test binaries
93 define TEST_CC_template
95 # Generate custom config.h redefining given config symbols, and declaring mocked
96 # functions weak. It is important that the compiler already sees that they are
97 # weak (and they aren't just turned weak at a later stage) to prevent certain
98 # optimizations that would break if the function gets replaced. (For clang this
99 # file needs to be marked `system_header` to prevent it from warning about
100 # #pragma weak entries without a matching function declaration, since there's no
101 # -Wno-xxx command line option for that.)
102 $(1)-config-file := $(testobj)/$(1)/config.h
103 $$($(1)-config-file): $(TEST_KCONFIG_AUTOHEADER)
105 printf '// File generated by tests/Makefile.mk\n// Do not change\n' > $$@
106 printf '#include <%s>\n\n' "$(notdir $(TEST_KCONFIG_AUTOHEADER))" >> $$@
107 for kv in $$($(1)-config); do \
108 key="`echo $$$$kv | cut -d '=' -f -1`"; \
109 value="`echo $$$$kv | cut -d '=' -f 2-`"; \
110 printf '#undef %s\n' "$$$$key" >> $$@; \
111 printf '#define %s %s\n\n' "$$$$key" "$$$$value" >> $$@; \
113 printf '#ifdef __clang__\n' >> $$@;
114 printf '#pragma clang system_header\n' >> $$@;
115 printf '#endif\n' >> $$@;
116 printf '#ifdef __TEST_SRCOBJ__\n' >> $$@;
117 for m in $$($(1)-mocks); do \
118 printf '#pragma weak %s\n' "$$$$m" >> $$@; \
120 printf '#endif\n' >> $$@;
122 $($(1)-objs): TEST_CFLAGS += -I$$(dir $$($(1)-config-file)) \
123 -D__$$(shell echo $$($(1)-stage) | tr '[:lower:]' '[:upper:]')__ \
124 -D__TEST_NAME__=\"$(subst /,_,$(1))\" \
126 # Give us a way to distinguish between coreboot source files and test files in code.
127 $($(1)-srcobjs): TEST_CFLAGS += -D__TEST_SRCOBJ__
129 # Add coreboot, vboot, kconfig etc. includes only to non-system libc linked objects
130 $(filter-out $($(1)-sysobjs),$($(1)-objs)): TEST_CFLAGS += $(TEST_INCLUDES)
132 # Compile sources and apply mocking/wrapping of selected symbols.
133 # For each listed mock add new symbol with prefix `__real_`,
134 # and pointing to the same section:address.
135 $($(1)-objs): $(testobj)/$(1)/%.o: $$$$*.c $$($(1)-config-file)
137 $(HOSTCC) $(HOSTCFLAGS) $$(TEST_CFLAGS) $$(TEST_INCLUDES) $($(1)-cflags) -MMD \
138 -MF $$(basename $$@).d -MT $$@ -c $$< -o $$@.orig
139 objcopy_wrap_flags=''; \
140 for sym in $$($(1)-mocks); do \
141 sym_line="$$$$($(OBJDUMP) -t $$@.orig \
142 | grep -E "[0-9a-fA-F]+\\s+w\\s+F\\s+.*\\s$$$$sym$$$$")"; \
143 if [ ! -z "$$$$sym_line" ] ; then \
144 addr="$$$$(echo "$$$$sym_line" | awk '{ print $$$$1 }')"; \
145 section="$$$$(echo "$$$$sym_line" | awk '{ print $$$$(NF - 2) }')"; \
146 objcopy_wrap_flags="$$$$objcopy_wrap_flags --add-symbol __real_$$$${sym}=$$$${section}:0x$$$${addr},function,global"; \
149 $(OBJCOPY) $$@.orig $$$$objcopy_wrap_flags $$@
151 # Compile system-side sources linked with system libc, without mocking symbols
152 # or code-under-test includes.
153 $($(1)-sysobjs): $(testobj)/$(1)/%.o: $$$$*.c $$($(1)-config-file)
155 $(HOSTCC) $(HOSTCFLAGS) $$(TEST_CFLAGS) $($(1)-cflags) -MMD \
156 -MF $$(basename $$@).d -MT $$@ -c $$< -o $$@
158 # Link against Cmocka if not disabled
159 ifeq ($(strip $(filter-out 0 n no,$($(1)-no_test_framework))),)
160 $($(1)-objs): TEST_CFLAGS += -I$(cmockasrc)/include
161 $($(1)-bin): TEST_LDFLAGS += -L$(cmockaobj)/src -lcmocka -Wl,-rpath=$(cmockaobj)/src
162 $($(1)-bin): TEST_CFLAGS += -I$(cmockasrc)/include
163 $($(1)-bin): $(CMOCKA_LIB)
166 $($(1)-bin): $($(1)-objs) $($(1)-sysobjs)
167 $(HOSTCC) $$^ $($(1)-cflags) $$(TEST_LDFLAGS) -o $$@
173 echo "*** Building CMOCKA ***"
174 mkdir -p $(cmockaobj)
175 cd $(cmockaobj) && $(CMAKE) $(abspath $(cmockasrc))
176 $(MAKE) -C $(cmockaobj)
181 cp $(TEST_DEFAULT_CONFIG) $(TEST_DOTCONFIG)
183 # Don't override default Kconfig variables, since this will affect all
184 # Kconfig targets. Change them only when calling sub-make instead.
185 $(TEST_KCONFIG_AUTOHEADER): TEST_KCONFIG_FLAGS := DOTCONFIG=$(TEST_DOTCONFIG) \
186 KCONFIG_AUTOHEADER=$(TEST_KCONFIG_AUTOHEADER) \
187 KCONFIG_AUTOCONFIG=$(TEST_KCONFIG_AUTOCONFIG) \
188 KCONFIG_DEPENDENCIES=$(TEST_KCONFIG_DEPENDENCIES) \
189 KCONFIG_SPLITCONFIG=$(TEST_KCONFIG_SPLITCONFIG) \
190 KCONFIG_TRISTATE=$(TEST_KCONFIG_TRISTATE) \
191 KBUILD_DEFCONFIG=$(TEST_DEFAULT_CONFIG)
193 $(TEST_KCONFIG_AUTOHEADER): $(TEST_DOTCONFIG)
195 $(MAKE) $(TEST_KCONFIG_FLAGS) olddefconfig
196 $(MAKE) $(TEST_KCONFIG_FLAGS) syncconfig
198 $(TEST_KCONFIG_AUTOCONFIG): $(TEST_KCONFIG_AUTOHEADER)
201 TEST_COMMON_DEPENDENCIES := $(CMOCKA_LIB) $(TEST_KCONFIG_AUTOCONFIG)