tools/testing/selftests/x86/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 all:
   3
   4 include ../lib.mk
   5
   6 .PHONY: all all_32 all_64 warn_32bit_failure clean
   7
   8 UNAME_M := $(shell uname -m)
   9 CAN_BUILD_I386 := $(shell ./check_cc.sh "$(CC)" trivial_32bit_program.c -m32)
  10 CAN_BUILD_X86_64 := $(shell ./check_cc.sh "$(CC)" trivial_64bit_program.c)
  11 CAN_BUILD_WITH_NOPIE := $(shell ./check_cc.sh "$(CC)" trivial_program.c -no-pie)
  12
  13 TARGETS_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 \
  16                         syscall_arg_fault fsgsbase_restore sigaltstack
  17 TARGETS_C_BOTHBITS += nx_stack
  18 TARGETS_C_32BIT_ONLY := entry_from_vm86 test_syscall_vdso unwind_vdso \
  19                         test_FCMOV test_FCOMI test_FISTTP \
  20                         vdso_restorer
  21 TARGETS_C_64BIT_ONLY := fsgsbase sysret_rip syscall_numbering \
  22                         corrupt_xstate_header amx lam test_shadow_stack
  23 # Some selftests require 32bit support enabled also on 64bit systems
  24 TARGETS_C_32BIT_NEEDED := ldt_gdt ptrace_syscall
  25
  26 TARGETS_C_32BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_32BIT_ONLY) $(TARGETS_C_32BIT_NEEDED)
  27 TARGETS_C_64BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_64BIT_ONLY)
  28 ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),11)
  29 TARGETS_C_64BIT_ALL += $(TARGETS_C_32BIT_NEEDED)
  30 endif
  31
  32 BINARIES_32 := $(TARGETS_C_32BIT_ALL:%=%_32)
  33 BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
  34
  35 BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
  36 BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
  37
  38 CFLAGS := -O2 -g -std=gnu99 -pthread -Wall $(KHDR_INCLUDES)
  39
  40 # call32_from_64 in thunks.S uses absolute addresses.
  41 ifeq ($(CAN_BUILD_WITH_NOPIE),1)
  42 CFLAGS += -no-pie
  43
  44 ifneq ($(LLVM),)
  45 # clang only wants to see -no-pie during linking. Here, we don't have a separate
  46 # linking stage, so a compiler warning is unavoidable without (wastefully)
  47 # restructuring the Makefile. Avoid this by simply disabling that warning.
  48 CFLAGS += -Wno-unused-command-line-argument
  49 endif
  50 endif
  51
  52 define gen-target-rule-32
  53 $(1) $(1)_32: $(OUTPUT)/$(1)_32
  54 .PHONY: $(1) $(1)_32
  55 endef
  56
  57 define gen-target-rule-64
  58 $(1) $(1)_64: $(OUTPUT)/$(1)_64
  59 .PHONY: $(1) $(1)_64
  60 endef
  61
  62 ifeq ($(CAN_BUILD_I386),1)
  63 all: all_32
  64 TEST_PROGS += $(BINARIES_32)
  65 EXTRA_CFLAGS += -DCAN_BUILD_32
  66 $(foreach t,$(TARGETS_C_32BIT_ALL),$(eval $(call gen-target-rule-32,$(t))))
  67 endif
  68
  69 ifeq ($(CAN_BUILD_X86_64),1)
  70 all: all_64
  71 TEST_PROGS += $(BINARIES_64)
  72 EXTRA_CFLAGS += -DCAN_BUILD_64
  73 $(foreach t,$(TARGETS_C_64BIT_ALL),$(eval $(call gen-target-rule-64,$(t))))
  74 endif
  75
  76 all_32: $(BINARIES_32)
  77
  78 all_64: $(BINARIES_64)
  79
  80 EXTRA_CLEAN := $(BINARIES_32) $(BINARIES_64)
  81
  82 $(BINARIES_32): $(OUTPUT)/%_32: %.c helpers.h
  83         $(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $< $(EXTRA_FILES) -lrt -ldl -lm
  84
  85 $(BINARIES_64): $(OUTPUT)/%_64: %.c helpers.h
  86         $(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $< $(EXTRA_FILES) -lrt -ldl
  87
  88 # x86_64 users should be encouraged to install 32-bit libraries
  89 ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
  90 all: warn_32bit_failure
  91
  92 warn_32bit_failure:
  93         @echo "Warning: you seem to have a broken 32-bit build" 2>&1;   \
  94         echo "environment.  This will reduce test coverage of 64-bit" 2>&1; \
  95         echo "kernels.  If you are using a Debian-like distribution," 2>&1; \
  96         echo "try:"; 2>&1; \
  97         echo "";                                                        \
  98         echo "  apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
  99         echo "";                                                        \
 100         echo "If you are using a Fedora-like distribution, try:";       \
 101         echo "";                                                        \
 102         echo "  yum install glibc-devel.*i686";                         \
 103         echo "";                                                        \
 104         echo "If you are using a SUSE-like distribution, try:";         \
 105         echo "";                                                        \
 106         echo "  zypper install gcc-32bit glibc-devel-static-32bit";     \
 107         exit 0;
 108 endif
 109
 110 # Add an additional file to the source file list for a given target, and also
 111 # add a Makefile dependency on that same file. However, do these separately, so
 112 # that the compiler invocation ("$(CC) file1.c file2.S") is not combined with
 113 # the dependencies ("header3.h"), because clang, unlike gcc, will not accept
 114 # header files as an input to the compiler invocation.
 115 define extra-files
 116 $(OUTPUT)/$(1): EXTRA_FILES := $(2)
 117 $(OUTPUT)/$(1): $(2)
 118 endef
 119
 120 $(eval $(call extra-files,sysret_ss_attrs_64,thunks.S))
 121 $(eval $(call extra-files,ptrace_syscall_32,raw_syscall_helper_32.S))
 122 $(eval $(call extra-files,test_syscall_vdso_32,thunks_32.S))
 123 $(eval $(call extra-files,fsgsbase_restore_64,clang_helpers_64.S))
 124 $(eval $(call extra-files,fsgsbase_restore_32,clang_helpers_32.S))
 125 $(eval $(call extra-files,sysret_rip_64,clang_helpers_64.S))
 126
 127 # check_initial_reg_state is special: it needs a custom entry, and it
 128 # needs to be static so that its interpreter doesn't destroy its initial
 129 # state.
 130 $(OUTPUT)/check_initial_reg_state_32: CFLAGS += -Wl,-ereal_start -static
 131 $(OUTPUT)/check_initial_reg_state_64: CFLAGS += -Wl,-ereal_start -static
 132
 133 $(OUTPUT)/nx_stack_32: CFLAGS += -Wl,-z,noexecstack
 134 $(OUTPUT)/nx_stack_64: CFLAGS += -Wl,-z,noexecstack