projects/linux·blob master · refs

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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 ioperm \
15 test_vsyscall mov_ss_trap sigtrap_loop \
16 syscall_arg_fault fsgsbase_restore sigaltstack int_signal
17TARGETS_C_BOTHBITS += nx_stack
18TARGETS_C_32BIT_ONLY := entry_from_vm86 test_syscall_vdso unwind_vdso \
19 test_FCMOV test_FCOMI test_FISTTP \
20 vdso_restorer
21TARGETS_C_64BIT_ONLY := fsgsbase sysret_rip syscall_numbering \
22 corrupt_xstate_header amx lam test_shadow_stack avx apx \
23 sigframe_fpu_portability
24# Some selftests require 32bit support enabled also on 64bit systems
25TARGETS_C_32BIT_NEEDED := ldt_gdt ptrace_syscall
26
27TARGETS_C_32BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_32BIT_ONLY) $(TARGETS_C_32BIT_NEEDED)
28TARGETS_C_64BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_64BIT_ONLY)
29ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),11)
30TARGETS_C_64BIT_ALL += $(TARGETS_C_32BIT_NEEDED)
31endif
32
33BINARIES_32 := $(TARGETS_C_32BIT_ALL:%=%_32)
34BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
35
36BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
37BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
38
39CFLAGS := -O2 -g -std=gnu99 -pthread -Wall $(KHDR_INCLUDES)
40CFLAGS += -I $(top_srcdir)/tools/testing/selftests/
41
42# call32_from_64 in thunks.S uses absolute addresses.
43ifeq ($(CAN_BUILD_WITH_NOPIE),1)
44CFLAGS += -no-pie
45
46ifneq ($(LLVM),)
47# clang only wants to see -no-pie during linking. Here, we don't have a separate
48# linking stage, so a compiler warning is unavoidable without (wastefully)
49# restructuring the Makefile. Avoid this by simply disabling that warning.
50CFLAGS += -Wno-unused-command-line-argument
51endif
52endif
53
54define gen-target-rule-32
55$(1) $(1)_32: $(OUTPUT)/$(1)_32
56.PHONY: $(1) $(1)_32
57endef
58
59define gen-target-rule-64
60$(1) $(1)_64: $(OUTPUT)/$(1)_64
61.PHONY: $(1) $(1)_64
62endef
63
64ifeq ($(CAN_BUILD_I386),1)
65all: all_32
66TEST_PROGS += $(BINARIES_32)
67EXTRA_CFLAGS += -DCAN_BUILD_32
68$(foreach t,$(TARGETS_C_32BIT_ALL),$(eval $(call gen-target-rule-32,$(t))))
69endif
70
71ifeq ($(CAN_BUILD_X86_64),1)
72all: all_64
73TEST_PROGS += $(BINARIES_64)
74EXTRA_CFLAGS += -DCAN_BUILD_64
75$(foreach t,$(TARGETS_C_64BIT_ALL),$(eval $(call gen-target-rule-64,$(t))))
76endif
77
78all_32: $(BINARIES_32)
79
80all_64: $(BINARIES_64)
81
82EXTRA_CLEAN := $(BINARIES_32) $(BINARIES_64) srso
83
84$(BINARIES_32): $(OUTPUT)/%_32: %.c helpers.h
85 $(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $< $(EXTRA_FILES) -lrt -ldl -lm
86
87$(BINARIES_64): $(OUTPUT)/%_64: %.c helpers.h
88 $(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $< $(EXTRA_FILES) -lrt -ldl
89
90# x86_64 users should be encouraged to install 32-bit libraries
91ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
92all: warn_32bit_failure
93
94warn_32bit_failure:
95 @echo "Warning: you seem to have a broken 32-bit build" 2>&1; \
96 echo "environment. This will reduce test coverage of 64-bit" 2>&1; \
97 echo "kernels. If you are using a Debian-like distribution," 2>&1; \
98 echo "try:"; 2>&1; \
99 echo ""; \
100 echo " apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
101 echo ""; \
102 echo "If you are using a Fedora-like distribution, try:"; \
103 echo ""; \
104 echo " yum install glibc-devel.*i686"; \
105 echo ""; \
106 echo "If you are using a SUSE-like distribution, try:"; \
107 echo ""; \
108 echo " zypper install gcc-32bit glibc-devel-static-32bit"; \
109 exit 0;
110endif
111
112# Add an additional file to the source file list for a given target, and also
113# add a Makefile dependency on that same file. However, do these separately, so
114# that the compiler invocation ("$(CC) file1.c file2.S") is not combined with
115# the dependencies ("header3.h"), because clang, unlike gcc, will not accept
116# header files as an input to the compiler invocation.
117define extra-files
118$(OUTPUT)/$(1): EXTRA_FILES := $(2)
119$(OUTPUT)/$(1): $(2)
120endef
121
122$(eval $(call extra-files,sysret_ss_attrs_64,thunks.S))
123$(eval $(call extra-files,ptrace_syscall_32,raw_syscall_helper_32.S))
124$(eval $(call extra-files,test_syscall_vdso_32,thunks_32.S))
125$(eval $(call extra-files,fsgsbase_restore_64,clang_helpers_64.S))
126$(eval $(call extra-files,fsgsbase_restore_32,clang_helpers_32.S))
127$(eval $(call extra-files,sysret_rip_64,clang_helpers_64.S))
128
129# check_initial_reg_state is special: it needs a custom entry, and it
130# needs to be static so that its interpreter doesn't destroy its initial
131# state.
132$(OUTPUT)/check_initial_reg_state_32: CFLAGS += -Wl,-ereal_start -static
133$(OUTPUT)/check_initial_reg_state_64: CFLAGS += -Wl,-ereal_start -static
134
135$(OUTPUT)/nx_stack_32: CFLAGS += -Wl,-z,noexecstack
136$(OUTPUT)/nx_stack_64: CFLAGS += -Wl,-z,noexecstack
137
138$(OUTPUT)/avx_64: CFLAGS += -mno-avx -mno-avx512f
139$(OUTPUT)/amx_64: EXTRA_FILES += xstate.c
140$(OUTPUT)/avx_64: EXTRA_FILES += xstate.c
141$(OUTPUT)/apx_64: EXTRA_FILES += xstate.c
142
143$(OUTPUT)/sigframe_fpu_portability_64: CFLAGS += -mno-avx -mno-avx512f