1# SPDX-License-Identifier: GPL-2.0 2# Makefile for nolibc tests 3# we're in ".../tools/testing/selftests/nolibc" 4ifeq ($(srctree),) 5srctree := $(patsubst %/tools/testing/selftests/,%,$(dir $(CURDIR))) 6endif 7 8include $(srctree)/tools/scripts/utilities.mak 9# We need this for the "__cc-option" macro. 10include $(srctree)/scripts/Makefile.compiler 11 12ifneq ($(O),) 13ifneq ($(call is-absolute,$(O)),y) 14$(error Only absolute O= parameters are supported) 15endif 16objtree := $(O) 17else 18objtree ?= $(srctree) 19endif 20 21ifeq ($(ARCH),) 22include $(srctree)/scripts/subarch.include 23ARCH = $(SUBARCH) 24endif 25 26cc-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 44XARCH_powerpc = ppc 45XARCH_mips = mips32le 46XARCH_riscv = riscv64 47XARCH = $(or $(XARCH_$(ARCH)),$(ARCH)) 48 49# map from user input variants to their kernel supported architectures 50ARCH_x32 = x86 51ARCH_armthumb = arm 52ARCH_ppc = powerpc 53ARCH_ppc64 = powerpc 54ARCH_ppc64le = powerpc 55ARCH_mips32le = mips 56ARCH_mips32be = mips 57ARCH_mipsn32le = mips 58ARCH_mipsn32be = mips 59ARCH_mips64le = mips 60ARCH_mips64be = mips 61ARCH_riscv32 = riscv 62ARCH_riscv64 = riscv 63ARCH_s390x = s390 64ARCH_sparc32 = sparc 65ARCH_sparc64 = sparc 66ARCH_sh4 = sh 67ARCH := $(or $(ARCH_$(XARCH)),$(XARCH)) 68 69# kernel image names by architecture 70IMAGE_i386 = arch/x86/boot/bzImage 71IMAGE_x86_64 = arch/x86/boot/bzImage 72IMAGE_x32 = arch/x86/boot/bzImage 73IMAGE_x86 = arch/x86/boot/bzImage 74IMAGE_arm64 = arch/arm64/boot/Image 75IMAGE_arm = arch/arm/boot/zImage 76IMAGE_armthumb = arch/arm/boot/zImage 77IMAGE_mips32le = vmlinuz 78IMAGE_mips32be = vmlinuz 79IMAGE_mipsn32le = vmlinuz 80IMAGE_mipsn32be = vmlinuz 81IMAGE_mips64le = vmlinuz 82IMAGE_mips64be = vmlinuz 83IMAGE_ppc = vmlinux 84IMAGE_ppc64 = vmlinux 85IMAGE_ppc64le = arch/powerpc/boot/zImage 86IMAGE_riscv = arch/riscv/boot/Image 87IMAGE_riscv32 = arch/riscv/boot/Image 88IMAGE_riscv64 = arch/riscv/boot/Image 89IMAGE_s390x = arch/s390/boot/bzImage 90IMAGE_loongarch = arch/loongarch/boot/vmlinuz.efi 91IMAGE_sparc32 = arch/sparc/boot/image 92IMAGE_sparc64 = arch/sparc/boot/image 93IMAGE_m68k = vmlinux 94IMAGE_sh4 = arch/sh/boot/zImage 95IMAGE = $(objtree)/$(IMAGE_$(XARCH)) 96IMAGE_NAME = $(notdir $(IMAGE)) 97 98# default kernel configurations that appear to be usable 99DEFCONFIG_i386 = defconfig 100DEFCONFIG_x86_64 = defconfig 101DEFCONFIG_x32 = defconfig 102DEFCONFIG_x86 = defconfig 103DEFCONFIG_arm64 = defconfig 104DEFCONFIG_arm = multi_v7_defconfig 105DEFCONFIG_armthumb = multi_v7_defconfig 106DEFCONFIG_mips32le = malta_defconfig 107DEFCONFIG_mips32be = malta_defconfig generic/eb.config 108DEFCONFIG_mipsn32le = malta_defconfig generic/64r2.config 109DEFCONFIG_mipsn32be = malta_defconfig generic/64r6.config generic/eb.config 110DEFCONFIG_mips64le = malta_defconfig generic/64r6.config 111DEFCONFIG_mips64be = malta_defconfig generic/64r2.config generic/eb.config 112DEFCONFIG_ppc = pmac32_defconfig 113DEFCONFIG_ppc64 = powernv_be_defconfig 114DEFCONFIG_ppc64le = powernv_defconfig 115DEFCONFIG_riscv = defconfig 116DEFCONFIG_riscv32 = rv32_defconfig 117DEFCONFIG_riscv64 = defconfig 118DEFCONFIG_s390x = defconfig 119DEFCONFIG_loongarch = defconfig 120DEFCONFIG_sparc32 = sparc32_defconfig 121DEFCONFIG_sparc64 = sparc64_defconfig 122DEFCONFIG_m68k = virt_defconfig 123DEFCONFIG_sh4 = rts7751r2dplus_defconfig 124DEFCONFIG = $(DEFCONFIG_$(XARCH)) 125 126EXTRACONFIG_x32 = -e CONFIG_X86_X32_ABI 127EXTRACONFIG_arm = -e CONFIG_NAMESPACES 128EXTRACONFIG_armthumb = -e CONFIG_NAMESPACES 129EXTRACONFIG_m68k = -e CONFIG_BLK_DEV_INITRD 130EXTRACONFIG_sh4 = -e CONFIG_BLK_DEV_INITRD -e CONFIG_CMDLINE_FROM_BOOTLOADER 131EXTRACONFIG = $(EXTRACONFIG_$(XARCH)) 132 133# optional tests to run (default = all) 134TEST = 135 136# QEMU_ARCH: arch names used by qemu 137QEMU_ARCH_i386 = i386 138QEMU_ARCH_x86_64 = x86_64 139QEMU_ARCH_x32 = x86_64 140QEMU_ARCH_x86 = x86_64 141QEMU_ARCH_arm64 = aarch64 142QEMU_ARCH_arm = arm 143QEMU_ARCH_armthumb = arm 144QEMU_ARCH_mips32le = mipsel # works with malta_defconfig 145QEMU_ARCH_mips32be = mips 146QEMU_ARCH_mipsn32le = mips64el 147QEMU_ARCH_mipsn32be = mips64 148QEMU_ARCH_mips64le = mips64el 149QEMU_ARCH_mips64be = mips64 150QEMU_ARCH_ppc = ppc 151QEMU_ARCH_ppc64 = ppc64 152QEMU_ARCH_ppc64le = ppc64 153QEMU_ARCH_riscv = riscv64 154QEMU_ARCH_riscv32 = riscv32 155QEMU_ARCH_riscv64 = riscv64 156QEMU_ARCH_s390x = s390x 157QEMU_ARCH_loongarch = loongarch64 158QEMU_ARCH_sparc32 = sparc 159QEMU_ARCH_sparc64 = sparc64 160QEMU_ARCH_m68k = m68k 161QEMU_ARCH_sh4 = sh4 162QEMU_ARCH = $(QEMU_ARCH_$(XARCH)) 163 164QEMU_ARCH_USER_ppc64le = ppc64le 165QEMU_ARCH_USER_mipsn32le = mipsn32el 166QEMU_ARCH_USER_mipsn32be = mipsn32 167QEMU_ARCH_USER = $(or $(QEMU_ARCH_USER_$(XARCH)),$(QEMU_ARCH_$(XARCH))) 168 169QEMU_BIOS_DIR = /usr/share/edk2/ 170QEMU_BIOS_loongarch = $(QEMU_BIOS_DIR)/loongarch64/OVMF_CODE.fd 171 172ifneq ($(QEMU_BIOS_$(XARCH)),) 173QEMU_ARGS_BIOS = -bios $(QEMU_BIOS_$(XARCH)) 174endif 175 176# QEMU_ARGS : some arch-specific args to pass to qemu 177QEMU_ARGS_i386 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 178QEMU_ARGS_x86_64 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 179QEMU_ARGS_x32 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 180QEMU_ARGS_x86 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 181QEMU_ARGS_arm64 = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 182QEMU_ARGS_arm = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 183QEMU_ARGS_armthumb = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 184QEMU_ARGS_mips32le = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 185QEMU_ARGS_mips32be = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 186QEMU_ARGS_mipsn32le = -M malta -cpu 5KEc -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 187QEMU_ARGS_mipsn32be = -M malta -cpu I6400 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 188QEMU_ARGS_mips64le = -M malta -cpu I6400 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 189QEMU_ARGS_mips64be = -M malta -cpu 5KEc -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 190QEMU_ARGS_ppc = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 191QEMU_ARGS_ppc64 = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 192QEMU_ARGS_ppc64le = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 193QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 194QEMU_ARGS_riscv32 = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 195QEMU_ARGS_riscv64 = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 196QEMU_ARGS_s390x = -M s390-ccw-virtio -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 197QEMU_ARGS_loongarch = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 198QEMU_ARGS_sparc32 = -M SS-5 -m 256M -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 199QEMU_ARGS_sparc64 = -M sun4u -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 200QEMU_ARGS_m68k = -M virt -append "console=ttyGF0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 201QEMU_ARGS_sh4 = -M r2d -serial file:/dev/stdout -append "console=ttySC1,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 202QEMU_ARGS = -m 1G $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_BIOS) $(QEMU_ARGS_EXTRA) 203 204# OUTPUT is only set when run from the main makefile, otherwise 205# it defaults to this nolibc directory. 206OUTPUT ?= $(CURDIR)/ 207 208ifeq ($(V),1) 209Q= 210else 211Q=@ 212endif 213 214CFLAGS_i386 = $(call cc-option,-m32) 215CFLAGS_x32 = -mx32 216CFLAGS_arm = -marm 217CFLAGS_armthumb = -mthumb -march=armv6t2 218CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cc-option,-mmultiple) 219CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cc-option,-mmultiple) 220CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cc-option,-mabi=elfv2) 221CFLAGS_s390x = -m64 222CFLAGS_mips32le = -EL -mabi=32 -fPIC 223CFLAGS_mips32be = -EB -mabi=32 224CFLAGS_mipsn32le = -EL -mabi=n32 -fPIC -march=mips64r2 225CFLAGS_mipsn32be = -EB -mabi=n32 -march=mips64r6 226CFLAGS_mips64le = -EL -mabi=64 -march=mips64r6 227CFLAGS_mips64be = -EB -mabi=64 -march=mips64r2 228CFLAGS_loongarch = $(if $(LLVM),-fuse-ld=lld) 229CFLAGS_sparc32 = $(call cc-option,-m32) 230CFLAGS_sh4 = -ml -m4 231ifeq ($(origin XARCH),command line) 232CFLAGS_XARCH = $(CFLAGS_$(XARCH)) 233endif 234 235include Makefile.include 236 237CFLAGS ?= $(CFLAGS_NOLIBC_TEST) $(CFLAGS_XARCH) $(CFLAGS_EXTRA) 238LDFLAGS := 239 240LIBGCC := -lgcc 241 242ifeq ($(ARCH),x86) 243# Not needed on x86, probably not present for x32 244LIBGCC := 245endif 246 247ifneq ($(LLVM),) 248# Not needed for clang 249LIBGCC := 250endif 251 252# Modify CFLAGS based on LLVM= 253include $(srctree)/tools/scripts/Makefile.include 254 255REPORT ?= awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$/{if (!f) printf("\n"); f++; print;} /\[SKIPPED\][\r]*$$/{s++} \ 256 /^Total number of errors:/{done++} \ 257 END{ printf("\n%3d test(s): %3d passed, %3d skipped, %3d failed => status: ", p+s+f, p, s, f); \ 258 if (f || !p || !done) printf("failure\n"); else if (s) printf("warning\n"); else printf("success\n");; \ 259 printf("\nSee all results in %s\n", ARGV[1]); }' 260 261# Execute the toplevel kernel Makefile 262KBUILD_MAKE = $(MAKE) -C $(srctree) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) LLVM= 263 264help: 265 @echo "Supported targets under selftests/nolibc:" 266 @echo " all call the \"run\" target below" 267 @echo " help this help" 268 @echo " sysroot create the nolibc sysroot here (uses \$$ARCH)" 269 @echo " nolibc-test build the executable (uses \$$CC or \$$CROSS_COMPILE)" 270 @echo " libc-test build an executable using the compiler's default libc instead" 271 @echo " run-user runs the executable under QEMU (uses \$$XARCH, \$$TEST)" 272 @echo " initramfs.cpio prepare the initramfs archive with nolibc-test" 273 @echo " initramfs prepare the initramfs tree with nolibc-test" 274 @echo " defconfig create a fresh new default config (uses \$$XARCH)" 275 @echo " kernel (re)build the kernel (uses \$$XARCH, \$$CROSS_COMPILE)" 276 @echo " kernel-standalone (re)build the kernel with the initramfs (uses \$$XARCH, \$$CROSS_COMPILE)" 277 @echo " run runs the kernel in QEMU after building it (uses \$$XARCH, \$$TEST)" 278 @echo " rerun runs a previously prebuilt kernel in QEMU (uses \$$XARCH, \$$TEST)" 279 @echo " clean clean the sysroot, initramfs, build and output files" 280 @echo "" 281 @echo "The output file is \"run.out\". Test ranges may be passed using \$$TEST." 282 @echo "" 283 @echo "Currently using the following variables:" 284 @echo " ARCH = $(ARCH)" 285 @echo " XARCH = $(XARCH)" 286 @echo " CROSS_COMPILE = $(CROSS_COMPILE)" 287 @echo " CC = $(CC)" 288 @echo " OUTPUT = $(OUTPUT)" 289 @echo " TEST = $(TEST)" 290 @echo " QEMU_ARCH = $(if $(QEMU_ARCH),$(QEMU_ARCH),UNKNOWN_ARCH) [determined from \$$XARCH]" 291 @echo " IMAGE_NAME = $(if $(IMAGE_NAME),$(IMAGE_NAME),UNKNOWN_ARCH) [determined from \$$XARCH]" 292 @echo "" 293 294all: run 295 296sysroot: sysroot/$(ARCH)/include 297 298sysroot/$(ARCH)/include: 299 $(Q)rm -rf sysroot/$(ARCH) sysroot/sysroot 300 $(QUIET_MKDIR)mkdir -p sysroot 301 $(Q)$(MAKE) -C $(srctree) outputmakefile 302 $(Q)$(MAKE) -C $(srctree)/tools/include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone headers_check 303 $(Q)mv sysroot/sysroot sysroot/$(ARCH) 304 305ifneq ($(NOLIBC_SYSROOT),0) 306nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include 307 $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \ 308 -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c $(LIBGCC) 309else 310nolibc-test: nolibc-test.c nolibc-test-linkage.c 311 $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \ 312 -nostdlib -static -include $(srctree)/tools/include/nolibc/nolibc.h nolibc-test.c nolibc-test-linkage.c $(LIBGCC) 313endif 314 315libc-test: nolibc-test.c nolibc-test-linkage.c 316 $(QUIET_CC)$(HOSTCC) -o $@ nolibc-test.c nolibc-test-linkage.c 317 318# local libc-test 319run-libc-test: libc-test 320 $(Q)./libc-test > "$(CURDIR)/run.out" || : 321 $(Q)$(REPORT) $(CURDIR)/run.out 322 323# local nolibc-test 324run-nolibc-test: nolibc-test 325 $(Q)./nolibc-test > "$(CURDIR)/run.out" || : 326 $(Q)$(REPORT) $(CURDIR)/run.out 327 328# qemu user-land test 329run-user: nolibc-test 330 $(Q)qemu-$(QEMU_ARCH_USER) ./nolibc-test > "$(CURDIR)/run.out" || : 331 $(Q)$(REPORT) $(CURDIR)/run.out 332 333initramfs.cpio: kernel nolibc-test 334 $(QUIET_GEN)echo 'file /init nolibc-test 755 0 0' | $(objtree)/usr/gen_init_cpio - > initramfs.cpio 335 336initramfs: nolibc-test 337 $(QUIET_MKDIR)mkdir -p initramfs 338 $(call QUIET_INSTALL, initramfs/init) 339 $(Q)cp nolibc-test initramfs/init 340 341defconfig: 342 $(Q)$(KBUILD_MAKE) $(DEFCONFIG) 343 $(Q)if [ -n "$(EXTRACONFIG)" ]; then \ 344 $(srctree)/scripts/config --file $(objtree)/.config $(EXTRACONFIG); \ 345 $(KBUILD_MAKE) olddefconfig < /dev/null; \ 346 fi 347 348kernel: 349 $(Q)$(KBUILD_MAKE) $(IMAGE_NAME) < /dev/null 350 351kernel-standalone: initramfs 352 $(Q)$(KBUILD_MAKE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs < /dev/null 353 354# run the tests after building the kernel 355run: kernel initramfs.cpio 356 $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial file:/dev/stdout $(QEMU_ARGS) > "$(CURDIR)/run.out" 357 $(Q)$(REPORT) $(CURDIR)/run.out 358 359# re-run the tests from an existing kernel 360rerun: 361 $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial file:/dev/stdout $(QEMU_ARGS) > "$(CURDIR)/run.out" 362 $(Q)$(REPORT) $(CURDIR)/run.out 363 364# report with existing test log 365report: 366 $(Q)$(REPORT) $(CURDIR)/run.out 367 368clean: 369 $(call QUIET_CLEAN, sysroot) 370 $(Q)rm -rf sysroot 371 $(call QUIET_CLEAN, nolibc-test) 372 $(Q)rm -f nolibc-test 373 $(call QUIET_CLEAN, libc-test) 374 $(Q)rm -f libc-test 375 $(call QUIET_CLEAN, initramfs.cpio) 376 $(Q)rm -rf initramfs.cpio 377 $(call QUIET_CLEAN, initramfs) 378 $(Q)rm -rf initramfs 379 $(call QUIET_CLEAN, run.out) 380 $(Q)rm -rf run.out 381 382.PHONY: sysroot/$(ARCH)/include 383