1# SPDX-License-Identifier: GPL-2.0
2all:
3
4include ../lib.mk
5
6.PHONY: all all_32 all_64 warn_32bit_failure clean
7
8UNAME_M := $(shell uname -m)
9CAN_BUILD_I386 := $(shell ./check_cc.sh $(CC) trivial_32bit_program.c -m32)
10CAN_BUILD_X86_64 := $(shell ./check_cc.sh $(CC) trivial_64bit_program.c)
11CAN_BUILD_WITH_NOPIE := $(shell ./check_cc.sh $(CC) trivial_program.c -no-pie)
12
13TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt test_mremap_vdso \
14			check_initial_reg_state sigreturn iopl mpx-mini-test ioperm \
15			protection_keys test_vdso test_vsyscall mov_ss_trap
16TARGETS_C_32BIT_ONLY := entry_from_vm86 syscall_arg_fault test_syscall_vdso unwind_vdso \
17			test_FCMOV test_FCOMI test_FISTTP \
18			vdso_restorer
19TARGETS_C_64BIT_ONLY := fsgsbase sysret_rip
20# Some selftests require 32bit support enabled also on 64bit systems
21TARGETS_C_32BIT_NEEDED := ldt_gdt ptrace_syscall
22
23TARGETS_C_32BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_32BIT_ONLY) $(TARGETS_C_32BIT_NEEDED)
24TARGETS_C_64BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_64BIT_ONLY)
25ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),11)
26TARGETS_C_64BIT_ALL += $(TARGETS_C_32BIT_NEEDED)
27endif
28
29BINARIES_32 := $(TARGETS_C_32BIT_ALL:%=%_32)
30BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
31
32BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
33BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
34
35CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
36
37# call32_from_64 in thunks.S uses absolute addresses.
38ifeq ($(CAN_BUILD_WITH_NOPIE),1)
39CFLAGS += -no-pie
40endif
41
42define gen-target-rule-32
43$(1) $(1)_32: $(OUTPUT)/$(1)_32
44.PHONY: $(1) $(1)_32
45endef
46
47define gen-target-rule-64
48$(1) $(1)_64: $(OUTPUT)/$(1)_64
49.PHONY: $(1) $(1)_64
50endef
51
52ifeq ($(CAN_BUILD_I386),1)
53all: all_32
54TEST_PROGS += $(BINARIES_32)
55EXTRA_CFLAGS += -DCAN_BUILD_32
56$(foreach t,$(TARGETS_C_32BIT_ALL),$(eval $(call gen-target-rule-32,$(t))))
57endif
58
59ifeq ($(CAN_BUILD_X86_64),1)
60all: all_64
61TEST_PROGS += $(BINARIES_64)
62EXTRA_CFLAGS += -DCAN_BUILD_64
63$(foreach t,$(TARGETS_C_64BIT_ALL),$(eval $(call gen-target-rule-64,$(t))))
64endif
65
66all_32: $(BINARIES_32)
67
68all_64: $(BINARIES_64)
69
70EXTRA_CLEAN := $(BINARIES_32) $(BINARIES_64)
71
72$(BINARIES_32): $(OUTPUT)/%_32: %.c
73	$(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl -lm
74
75$(BINARIES_64): $(OUTPUT)/%_64: %.c
76	$(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl
77
78# x86_64 users should be encouraged to install 32-bit libraries
79ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
80all: warn_32bit_failure
81
82warn_32bit_failure:
83	@echo "Warning: you seem to have a broken 32-bit build" 2>&1; 	\
84	echo "environment.  This will reduce test coverage of 64-bit" 2>&1; \
85	echo "kernels.  If you are using a Debian-like distribution," 2>&1; \
86	echo "try:"; 2>&1; \
87	echo "";							\
88	echo "  apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
89	echo "";							\
90	echo "If you are using a Fedora-like distribution, try:";	\
91	echo "";							\
92	echo "  yum install glibc-devel.*i686";				\
93	exit 0;
94endif
95
96# Some tests have additional dependencies.
97$(OUTPUT)/sysret_ss_attrs_64: thunks.S
98$(OUTPUT)/ptrace_syscall_32: raw_syscall_helper_32.S
99$(OUTPUT)/test_syscall_vdso_32: thunks_32.S
100
101# check_initial_reg_state is special: it needs a custom entry, and it
102# needs to be static so that its interpreter doesn't destroy its initial
103# state.
104$(OUTPUT)/check_initial_reg_state_32: CFLAGS += -Wl,-ereal_start -static
105$(OUTPUT)/check_initial_reg_state_64: CFLAGS += -Wl,-ereal_start -static
106