tools/testing/selftests/nolibc/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 # Makefile for nolibc tests
   3 # we're in ".../tools/testing/selftests/nolibc"
   4 ifeq ($(srctree),)
   5 srctree := $(patsubst %/tools/testing/selftests/,%,$(dir $(CURDIR)))
   6 endif
   7
   8 include $(srctree)/tools/scripts/utilities.mak
   9 # We need this for the "__cc-option" macro.
  10 include $(srctree)/scripts/Makefile.compiler
  11
  12 ifneq ($(O),)
  13 ifneq ($(call is-absolute,$(O)),y)
  14 $(error Only absolute O= parameters are supported)
  15 endif
  16 objtree := $(O)
  17 else
  18 objtree ?= $(srctree)
  19 endif
  20
  21 ifeq ($(ARCH),)
  22 include $(srctree)/scripts/subarch.include
  23 ARCH = $(SUBARCH)
  24 endif
  25
  26 cc-option = $(call __cc-option, $(CC),$(CLANG_CROSS_FLAGS),$(1),$(2))
  27
  28 # XARCH extends the kernel's ARCH with a few variants of the same
  29 # architecture that only differ by the configuration, the toolchain
  30 # and the Qemu program used. It is copied as-is into ARCH except for
  31 # a few specific values which are mapped like this:
  32 #
  33 #  XARCH        | ARCH      | config
  34 #  -------------|-----------|-------------------------
  35 #  ppc          | powerpc   | 32 bits
  36 #  ppc64        | powerpc   | 64 bits big endian
  37 #  ppc64le      | powerpc   | 64 bits little endian
  38 #
  39 # It is recommended to only use XARCH, though it does not harm if
  40 # ARCH is already set. For simplicity, ARCH is sufficient for all
  41 # architectures where both are equal.
  42
  43 # configure default variants for target kernel supported architectures
  44 XARCH_powerpc    = ppc
  45 XARCH_mips       = mips32le
  46 XARCH            = $(or $(XARCH_$(ARCH)),$(ARCH))
  47
  48 # map from user input variants to their kernel supported architectures
  49 ARCH_ppc         = powerpc
  50 ARCH_ppc64       = powerpc
  51 ARCH_ppc64le     = powerpc
  52 ARCH_mips32le    = mips
  53 ARCH_mips32be    = mips
  54 ARCH            := $(or $(ARCH_$(XARCH)),$(XARCH))
  55
  56 # kernel image names by architecture
  57 IMAGE_i386       = arch/x86/boot/bzImage
  58 IMAGE_x86_64     = arch/x86/boot/bzImage
  59 IMAGE_x86        = arch/x86/boot/bzImage
  60 IMAGE_arm64      = arch/arm64/boot/Image
  61 IMAGE_arm        = arch/arm/boot/zImage
  62 IMAGE_mips32le   = vmlinuz
  63 IMAGE_mips32be   = vmlinuz
  64 IMAGE_ppc        = vmlinux
  65 IMAGE_ppc64      = vmlinux
  66 IMAGE_ppc64le    = arch/powerpc/boot/zImage
  67 IMAGE_riscv      = arch/riscv/boot/Image
  68 IMAGE_s390       = arch/s390/boot/bzImage
  69 IMAGE_loongarch  = arch/loongarch/boot/vmlinuz.efi
  70 IMAGE            = $(objtree)/$(IMAGE_$(XARCH))
  71 IMAGE_NAME       = $(notdir $(IMAGE))
  72
  73 # default kernel configurations that appear to be usable
  74 DEFCONFIG_i386       = defconfig
  75 DEFCONFIG_x86_64     = defconfig
  76 DEFCONFIG_x86        = defconfig
  77 DEFCONFIG_arm64      = defconfig
  78 DEFCONFIG_arm        = multi_v7_defconfig
  79 DEFCONFIG_mips32le   = malta_defconfig
  80 DEFCONFIG_mips32be   = malta_defconfig
  81 DEFCONFIG_ppc        = pmac32_defconfig
  82 DEFCONFIG_ppc64      = powernv_be_defconfig
  83 DEFCONFIG_ppc64le    = powernv_defconfig
  84 DEFCONFIG_riscv      = defconfig
  85 DEFCONFIG_s390       = defconfig
  86 DEFCONFIG_loongarch  = defconfig
  87 DEFCONFIG            = $(DEFCONFIG_$(XARCH))
  88
  89 EXTRACONFIG_mips32be = -d CONFIG_CPU_LITTLE_ENDIAN -e CONFIG_CPU_BIG_ENDIAN
  90 EXTRACONFIG           = $(EXTRACONFIG_$(XARCH))
  91
  92 # optional tests to run (default = all)
  93 TEST =
  94
  95 # QEMU_ARCH: arch names used by qemu
  96 QEMU_ARCH_i386       = i386
  97 QEMU_ARCH_x86_64     = x86_64
  98 QEMU_ARCH_x86        = x86_64
  99 QEMU_ARCH_arm64      = aarch64
 100 QEMU_ARCH_arm        = arm
 101 QEMU_ARCH_mips32le   = mipsel  # works with malta_defconfig
 102 QEMU_ARCH_mips32be  = mips
 103 QEMU_ARCH_ppc        = ppc
 104 QEMU_ARCH_ppc64      = ppc64
 105 QEMU_ARCH_ppc64le    = ppc64
 106 QEMU_ARCH_riscv      = riscv64
 107 QEMU_ARCH_s390       = s390x
 108 QEMU_ARCH_loongarch  = loongarch64
 109 QEMU_ARCH            = $(QEMU_ARCH_$(XARCH))
 110
 111 QEMU_ARCH_USER_ppc64le = ppc64le
 112 QEMU_ARCH_USER         = $(or $(QEMU_ARCH_USER_$(XARCH)),$(QEMU_ARCH_$(XARCH)))
 113
 114 QEMU_BIOS_DIR = /usr/share/edk2/
 115 QEMU_BIOS_loongarch = $(QEMU_BIOS_DIR)/loongarch64/OVMF_CODE.fd
 116
 117 ifneq ($(QEMU_BIOS_$(XARCH)),)
 118 QEMU_ARGS_BIOS = -bios $(QEMU_BIOS_$(XARCH))
 119 endif
 120
 121 # QEMU_ARGS : some arch-specific args to pass to qemu
 122 QEMU_ARGS_i386       = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 123 QEMU_ARGS_x86_64     = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 124 QEMU_ARGS_x86        = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 125 QEMU_ARGS_arm64      = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 126 QEMU_ARGS_arm        = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 127 QEMU_ARGS_mips32le   = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 128 QEMU_ARGS_mips32be   = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 129 QEMU_ARGS_ppc        = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 130 QEMU_ARGS_ppc64      = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 131 QEMU_ARGS_ppc64le    = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 132 QEMU_ARGS_riscv      = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 133 QEMU_ARGS_s390       = -M s390-ccw-virtio -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 134 QEMU_ARGS_loongarch  = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
 135 QEMU_ARGS            = -m 1G $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_BIOS) $(QEMU_ARGS_EXTRA)
 136
 137 # OUTPUT is only set when run from the main makefile, otherwise
 138 # it defaults to this nolibc directory.
 139 OUTPUT ?= $(CURDIR)/
 140
 141 ifeq ($(V),1)
 142 Q=
 143 else
 144 Q=@
 145 endif
 146
 147 CFLAGS_i386 = $(call cc-option,-m32)
 148 CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
 149 CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
 150 CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cc-option,-mabi=elfv2)
 151 CFLAGS_s390 = -m64
 152 CFLAGS_mips32le = -EL -mabi=32 -fPIC
 153 CFLAGS_mips32be = -EB -mabi=32
 154 CFLAGS_STACKPROTECTOR ?= $(call cc-option,-mstack-protector-guard=global $(call cc-option,-fstack-protector-all))
 155 CFLAGS  ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra \
 156                 $(call cc-option,-fno-stack-protector) \
 157                 $(CFLAGS_$(XARCH)) $(CFLAGS_STACKPROTECTOR) $(CFLAGS_EXTRA)
 158 LDFLAGS :=
 159
 160 LIBGCC := -lgcc
 161
 162 ifneq ($(LLVM),)
 163 # Not needed for clang
 164 LIBGCC :=
 165 endif
 166
 167 # Modify CFLAGS based on LLVM=
 168 include $(srctree)/tools/scripts/Makefile.include
 169
 170 # GCC uses "s390", clang "systemz"
 171 CLANG_CROSS_FLAGS := $(subst --target=s390-linux,--target=systemz-linux,$(CLANG_CROSS_FLAGS))
 172
 173 REPORT  ?= awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$/{if (!f) printf("\n"); f++; print;} /\[SKIPPED\][\r]*$$/{s++} \
 174                 END{ printf("\n%3d test(s): %3d passed, %3d skipped, %3d failed => status: ", p+s+f, p, s, f); \
 175                 if (f || !p) printf("failure\n"); else if (s) printf("warning\n"); else printf("success\n");; \
 176                 printf("\nSee all results in %s\n", ARGV[1]); }'
 177
 178 help:
 179         @echo "Supported targets under selftests/nolibc:"
 180         @echo "  all               call the \"run\" target below"
 181         @echo "  help              this help"
 182         @echo "  sysroot           create the nolibc sysroot here (uses \$$ARCH)"
 183         @echo "  nolibc-test       build the executable (uses \$$CC and \$$CROSS_COMPILE)"
 184         @echo "  libc-test         build an executable using the compiler's default libc instead"
 185         @echo "  run-user          runs the executable under QEMU (uses \$$XARCH, \$$TEST)"
 186         @echo "  initramfs.cpio    prepare the initramfs archive with nolibc-test"
 187         @echo "  initramfs         prepare the initramfs tree with nolibc-test"
 188         @echo "  defconfig         create a fresh new default config (uses \$$XARCH)"
 189         @echo "  kernel            (re)build the kernel (uses \$$XARCH)"
 190         @echo "  kernel-standalone (re)build the kernel with the initramfs (uses \$$XARCH)"
 191         @echo "  run               runs the kernel in QEMU after building it (uses \$$XARCH, \$$TEST)"
 192         @echo "  rerun             runs a previously prebuilt kernel in QEMU (uses \$$XARCH, \$$TEST)"
 193         @echo "  clean             clean the sysroot, initramfs, build and output files"
 194         @echo ""
 195         @echo "The output file is \"run.out\". Test ranges may be passed using \$$TEST."
 196         @echo ""
 197         @echo "Currently using the following variables:"
 198         @echo "  ARCH          = $(ARCH)"
 199         @echo "  XARCH         = $(XARCH)"
 200         @echo "  CROSS_COMPILE = $(CROSS_COMPILE)"
 201         @echo "  CC            = $(CC)"
 202         @echo "  OUTPUT        = $(OUTPUT)"
 203         @echo "  TEST          = $(TEST)"
 204         @echo "  QEMU_ARCH     = $(if $(QEMU_ARCH),$(QEMU_ARCH),UNKNOWN_ARCH) [determined from \$$XARCH]"
 205         @echo "  IMAGE_NAME    = $(if $(IMAGE_NAME),$(IMAGE_NAME),UNKNOWN_ARCH) [determined from \$$XARCH]"
 206         @echo ""
 207
 208 all: run
 209
 210 sysroot: sysroot/$(ARCH)/include
 211
 212 sysroot/$(ARCH)/include:
 213         $(Q)rm -rf sysroot/$(ARCH) sysroot/sysroot
 214         $(QUIET_MKDIR)mkdir -p sysroot
 215         $(Q)$(MAKE) -C $(srctree) outputmakefile
 216         $(Q)$(MAKE) -C $(srctree)/tools/include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone
 217         $(Q)mv sysroot/sysroot sysroot/$(ARCH)
 218
 219 ifneq ($(NOLIBC_SYSROOT),0)
 220 nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include
 221         $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
 222           -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c $(LIBGCC)
 223 else
 224 nolibc-test: nolibc-test.c nolibc-test-linkage.c
 225         $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
 226           -nostdlib -static -include $(srctree)/tools/include/nolibc/nolibc.h nolibc-test.c nolibc-test-linkage.c $(LIBGCC)
 227 endif
 228
 229 libc-test: nolibc-test.c nolibc-test-linkage.c
 230         $(QUIET_CC)$(HOSTCC) -o $@ nolibc-test.c nolibc-test-linkage.c
 231
 232 # local libc-test
 233 run-libc-test: libc-test
 234         $(Q)./libc-test > "$(CURDIR)/run.out" || :
 235         $(Q)$(REPORT) $(CURDIR)/run.out
 236
 237 # local nolibc-test
 238 run-nolibc-test: nolibc-test
 239         $(Q)./nolibc-test > "$(CURDIR)/run.out" || :
 240         $(Q)$(REPORT) $(CURDIR)/run.out
 241
 242 # qemu user-land test
 243 run-user: nolibc-test
 244         $(Q)qemu-$(QEMU_ARCH_USER) ./nolibc-test > "$(CURDIR)/run.out" || :
 245         $(Q)$(REPORT) $(CURDIR)/run.out
 246
 247 initramfs.cpio: kernel nolibc-test
 248         $(QUIET_GEN)echo 'file /init nolibc-test 755 0 0' | $(objtree)/usr/gen_init_cpio - > initramfs.cpio
 249
 250 initramfs: nolibc-test
 251         $(QUIET_MKDIR)mkdir -p initramfs
 252         $(call QUIET_INSTALL, initramfs/init)
 253         $(Q)cp nolibc-test initramfs/init
 254
 255 defconfig:
 256         $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) mrproper $(DEFCONFIG) prepare
 257         $(Q)if [ -n "$(EXTRACONFIG)" ]; then \
 258                 $(srctree)/scripts/config --file $(objtree)/.config $(EXTRACONFIG); \
 259                 $(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) olddefconfig < /dev/null; \
 260         fi
 261
 262 kernel:
 263         $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) < /dev/null
 264
 265 kernel-standalone: initramfs
 266         $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs < /dev/null
 267
 268 # run the tests after building the kernel
 269 run: kernel initramfs.cpio
 270         $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
 271         $(Q)$(REPORT) $(CURDIR)/run.out
 272
 273 # re-run the tests from an existing kernel
 274 rerun:
 275         $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
 276         $(Q)$(REPORT) $(CURDIR)/run.out
 277
 278 # report with existing test log
 279 report:
 280         $(Q)$(REPORT) $(CURDIR)/run.out
 281
 282 clean:
 283         $(call QUIET_CLEAN, sysroot)
 284         $(Q)rm -rf sysroot
 285         $(call QUIET_CLEAN, nolibc-test)
 286         $(Q)rm -f nolibc-test
 287         $(call QUIET_CLEAN, libc-test)
 288         $(Q)rm -f libc-test
 289         $(call QUIET_CLEAN, initramfs.cpio)
 290         $(Q)rm -rf initramfs.cpio
 291         $(call QUIET_CLEAN, initramfs)
 292         $(Q)rm -rf initramfs
 293         $(call QUIET_CLEAN, run.out)
 294         $(Q)rm -rf run.out
 295
 296 .PHONY: sysroot/$(ARCH)/include