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_armthumb = arm 51ARCH_ppc = powerpc 52ARCH_ppc64 = powerpc 53ARCH_ppc64le = powerpc 54ARCH_mips32le = mips 55ARCH_mips32be = mips 56ARCH_riscv32 = riscv 57ARCH_riscv64 = riscv 58ARCH_s390x = s390 59ARCH_sparc32 = sparc 60ARCH_sparc64 = sparc 61ARCH := $(or $(ARCH_$(XARCH)),$(XARCH)) 62 63# kernel image names by architecture 64IMAGE_i386 = arch/x86/boot/bzImage 65IMAGE_x86_64 = arch/x86/boot/bzImage 66IMAGE_x86 = arch/x86/boot/bzImage 67IMAGE_arm64 = arch/arm64/boot/Image 68IMAGE_arm = arch/arm/boot/zImage 69IMAGE_armthumb = arch/arm/boot/zImage 70IMAGE_mips32le = vmlinuz 71IMAGE_mips32be = vmlinuz 72IMAGE_ppc = vmlinux 73IMAGE_ppc64 = vmlinux 74IMAGE_ppc64le = arch/powerpc/boot/zImage 75IMAGE_riscv = arch/riscv/boot/Image 76IMAGE_riscv32 = arch/riscv/boot/Image 77IMAGE_riscv64 = arch/riscv/boot/Image 78IMAGE_s390x = arch/s390/boot/bzImage 79IMAGE_s390 = arch/s390/boot/bzImage 80IMAGE_loongarch = arch/loongarch/boot/vmlinuz.efi 81IMAGE_sparc32 = arch/sparc/boot/image 82IMAGE_sparc64 = arch/sparc/boot/image 83IMAGE_m68k = vmlinux 84IMAGE = $(objtree)/$(IMAGE_$(XARCH)) 85IMAGE_NAME = $(notdir $(IMAGE)) 86 87# default kernel configurations that appear to be usable 88DEFCONFIG_i386 = defconfig 89DEFCONFIG_x86_64 = defconfig 90DEFCONFIG_x86 = defconfig 91DEFCONFIG_arm64 = defconfig 92DEFCONFIG_arm = multi_v7_defconfig 93DEFCONFIG_armthumb = multi_v7_defconfig 94DEFCONFIG_mips32le = malta_defconfig 95DEFCONFIG_mips32be = malta_defconfig generic/eb.config 96DEFCONFIG_ppc = pmac32_defconfig 97DEFCONFIG_ppc64 = powernv_be_defconfig 98DEFCONFIG_ppc64le = powernv_defconfig 99DEFCONFIG_riscv = defconfig 100DEFCONFIG_riscv32 = rv32_defconfig 101DEFCONFIG_riscv64 = defconfig 102DEFCONFIG_s390x = defconfig 103DEFCONFIG_s390 = defconfig compat.config 104DEFCONFIG_loongarch = defconfig 105DEFCONFIG_sparc32 = sparc32_defconfig 106DEFCONFIG_sparc64 = sparc64_defconfig 107DEFCONFIG_m68k = virt_defconfig 108DEFCONFIG = $(DEFCONFIG_$(XARCH)) 109 110EXTRACONFIG_m68k = -e CONFIG_BLK_DEV_INITRD 111EXTRACONFIG = $(EXTRACONFIG_$(XARCH)) 112EXTRACONFIG_arm = -e CONFIG_NAMESPACES 113EXTRACONFIG_armthumb = -e CONFIG_NAMESPACES 114 115# optional tests to run (default = all) 116TEST = 117 118# QEMU_ARCH: arch names used by qemu 119QEMU_ARCH_i386 = i386 120QEMU_ARCH_x86_64 = x86_64 121QEMU_ARCH_x86 = x86_64 122QEMU_ARCH_arm64 = aarch64 123QEMU_ARCH_arm = arm 124QEMU_ARCH_armthumb = arm 125QEMU_ARCH_mips32le = mipsel # works with malta_defconfig 126QEMU_ARCH_mips32be = mips 127QEMU_ARCH_ppc = ppc 128QEMU_ARCH_ppc64 = ppc64 129QEMU_ARCH_ppc64le = ppc64 130QEMU_ARCH_riscv = riscv64 131QEMU_ARCH_riscv32 = riscv32 132QEMU_ARCH_riscv64 = riscv64 133QEMU_ARCH_s390x = s390x 134QEMU_ARCH_s390 = s390x 135QEMU_ARCH_loongarch = loongarch64 136QEMU_ARCH_sparc32 = sparc 137QEMU_ARCH_sparc64 = sparc64 138QEMU_ARCH_m68k = m68k 139QEMU_ARCH = $(QEMU_ARCH_$(XARCH)) 140 141QEMU_ARCH_USER_ppc64le = ppc64le 142QEMU_ARCH_USER = $(or $(QEMU_ARCH_USER_$(XARCH)),$(QEMU_ARCH_$(XARCH))) 143 144QEMU_BIOS_DIR = /usr/share/edk2/ 145QEMU_BIOS_loongarch = $(QEMU_BIOS_DIR)/loongarch64/OVMF_CODE.fd 146 147ifneq ($(QEMU_BIOS_$(XARCH)),) 148QEMU_ARGS_BIOS = -bios $(QEMU_BIOS_$(XARCH)) 149endif 150 151# QEMU_ARGS : some arch-specific args to pass to qemu 152QEMU_ARGS_i386 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 153QEMU_ARGS_x86_64 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 154QEMU_ARGS_x86 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 155QEMU_ARGS_arm64 = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 156QEMU_ARGS_arm = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 157QEMU_ARGS_armthumb = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 158QEMU_ARGS_mips32le = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 159QEMU_ARGS_mips32be = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 160QEMU_ARGS_ppc = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 161QEMU_ARGS_ppc64 = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 162QEMU_ARGS_ppc64le = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 163QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 164QEMU_ARGS_riscv32 = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 165QEMU_ARGS_riscv64 = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 166QEMU_ARGS_s390x = -M s390-ccw-virtio -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 167QEMU_ARGS_s390 = -M s390-ccw-virtio -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 168QEMU_ARGS_loongarch = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 169QEMU_ARGS_sparc32 = -M SS-5 -m 256M -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 170QEMU_ARGS_sparc64 = -M sun4u -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 171QEMU_ARGS_m68k = -M virt -append "console=ttyGF0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 172QEMU_ARGS = -m 1G $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_BIOS) $(QEMU_ARGS_EXTRA) 173 174# OUTPUT is only set when run from the main makefile, otherwise 175# it defaults to this nolibc directory. 176OUTPUT ?= $(CURDIR)/ 177 178ifeq ($(V),1) 179Q= 180else 181Q=@ 182endif 183 184CFLAGS_i386 = $(call cc-option,-m32) 185CFLAGS_arm = -marm 186CFLAGS_armthumb = -mthumb -march=armv6t2 187CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cc-option,-mmultiple) 188CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cc-option,-mmultiple) 189CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cc-option,-mabi=elfv2) 190CFLAGS_s390x = -m64 191CFLAGS_s390 = -m31 192CFLAGS_mips32le = -EL -mabi=32 -fPIC 193CFLAGS_mips32be = -EB -mabi=32 194CFLAGS_sparc32 = $(call cc-option,-m32) 195ifeq ($(origin XARCH),command line) 196CFLAGS_XARCH = $(CFLAGS_$(XARCH)) 197endif 198CFLAGS_STACKPROTECTOR ?= $(call cc-option,-mstack-protector-guard=global $(call cc-option,-fstack-protector-all)) 199CFLAGS_SANITIZER ?= $(call cc-option,-fsanitize=undefined -fsanitize-trap=all) 200CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra \ 201 $(call cc-option,-fno-stack-protector) $(call cc-option,-Wmissing-prototypes) \ 202 $(CFLAGS_XARCH) $(CFLAGS_STACKPROTECTOR) $(CFLAGS_SANITIZER) $(CFLAGS_EXTRA) 203LDFLAGS := 204 205LIBGCC := -lgcc 206 207ifneq ($(LLVM),) 208# Not needed for clang 209LIBGCC := 210endif 211 212# Modify CFLAGS based on LLVM= 213include $(srctree)/tools/scripts/Makefile.include 214 215# GCC uses "s390", clang "systemz" 216CLANG_CROSS_FLAGS := $(subst --target=s390-linux,--target=systemz-linux,$(CLANG_CROSS_FLAGS)) 217 218REPORT ?= awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$/{if (!f) printf("\n"); f++; print;} /\[SKIPPED\][\r]*$$/{s++} \ 219 END{ printf("\n%3d test(s): %3d passed, %3d skipped, %3d failed => status: ", p+s+f, p, s, f); \ 220 if (f || !p) printf("failure\n"); else if (s) printf("warning\n"); else printf("success\n");; \ 221 printf("\nSee all results in %s\n", ARGV[1]); }' 222 223help: 224 @echo "Supported targets under selftests/nolibc:" 225 @echo " all call the \"run\" target below" 226 @echo " help this help" 227 @echo " sysroot create the nolibc sysroot here (uses \$$ARCH)" 228 @echo " nolibc-test build the executable (uses \$$CC and \$$CROSS_COMPILE)" 229 @echo " libc-test build an executable using the compiler's default libc instead" 230 @echo " run-user runs the executable under QEMU (uses \$$XARCH, \$$TEST)" 231 @echo " initramfs.cpio prepare the initramfs archive with nolibc-test" 232 @echo " initramfs prepare the initramfs tree with nolibc-test" 233 @echo " defconfig create a fresh new default config (uses \$$XARCH)" 234 @echo " kernel (re)build the kernel (uses \$$XARCH)" 235 @echo " kernel-standalone (re)build the kernel with the initramfs (uses \$$XARCH)" 236 @echo " run runs the kernel in QEMU after building it (uses \$$XARCH, \$$TEST)" 237 @echo " rerun runs a previously prebuilt kernel in QEMU (uses \$$XARCH, \$$TEST)" 238 @echo " clean clean the sysroot, initramfs, build and output files" 239 @echo "" 240 @echo "The output file is \"run.out\". Test ranges may be passed using \$$TEST." 241 @echo "" 242 @echo "Currently using the following variables:" 243 @echo " ARCH = $(ARCH)" 244 @echo " XARCH = $(XARCH)" 245 @echo " CROSS_COMPILE = $(CROSS_COMPILE)" 246 @echo " CC = $(CC)" 247 @echo " OUTPUT = $(OUTPUT)" 248 @echo " TEST = $(TEST)" 249 @echo " QEMU_ARCH = $(if $(QEMU_ARCH),$(QEMU_ARCH),UNKNOWN_ARCH) [determined from \$$XARCH]" 250 @echo " IMAGE_NAME = $(if $(IMAGE_NAME),$(IMAGE_NAME),UNKNOWN_ARCH) [determined from \$$XARCH]" 251 @echo "" 252 253all: run 254 255sysroot: sysroot/$(ARCH)/include 256 257sysroot/$(ARCH)/include: 258 $(Q)rm -rf sysroot/$(ARCH) sysroot/sysroot 259 $(QUIET_MKDIR)mkdir -p sysroot 260 $(Q)$(MAKE) -C $(srctree) outputmakefile 261 $(Q)$(MAKE) -C $(srctree)/tools/include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone headers_check 262 $(Q)mv sysroot/sysroot sysroot/$(ARCH) 263 264ifneq ($(NOLIBC_SYSROOT),0) 265nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include 266 $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \ 267 -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c $(LIBGCC) 268else 269nolibc-test: nolibc-test.c nolibc-test-linkage.c 270 $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \ 271 -nostdlib -static -include $(srctree)/tools/include/nolibc/nolibc.h nolibc-test.c nolibc-test-linkage.c $(LIBGCC) 272endif 273 274libc-test: nolibc-test.c nolibc-test-linkage.c 275 $(QUIET_CC)$(HOSTCC) -o $@ nolibc-test.c nolibc-test-linkage.c 276 277# local libc-test 278run-libc-test: libc-test 279 $(Q)./libc-test > "$(CURDIR)/run.out" || : 280 $(Q)$(REPORT) $(CURDIR)/run.out 281 282# local nolibc-test 283run-nolibc-test: nolibc-test 284 $(Q)./nolibc-test > "$(CURDIR)/run.out" || : 285 $(Q)$(REPORT) $(CURDIR)/run.out 286 287# qemu user-land test 288run-user: nolibc-test 289 $(Q)qemu-$(QEMU_ARCH_USER) ./nolibc-test > "$(CURDIR)/run.out" || : 290 $(Q)$(REPORT) $(CURDIR)/run.out 291 292initramfs.cpio: kernel nolibc-test 293 $(QUIET_GEN)echo 'file /init nolibc-test 755 0 0' | $(objtree)/usr/gen_init_cpio - > initramfs.cpio 294 295initramfs: nolibc-test 296 $(QUIET_MKDIR)mkdir -p initramfs 297 $(call QUIET_INSTALL, initramfs/init) 298 $(Q)cp nolibc-test initramfs/init 299 300defconfig: 301 $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(DEFCONFIG) 302 $(Q)if [ -n "$(EXTRACONFIG)" ]; then \ 303 $(srctree)/scripts/config --file $(objtree)/.config $(EXTRACONFIG); \ 304 $(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) olddefconfig < /dev/null; \ 305 fi 306 307kernel: | defconfig 308 $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) < /dev/null 309 310kernel-standalone: initramfs | defconfig 311 $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs < /dev/null 312 313# run the tests after building the kernel 314run: kernel initramfs.cpio 315 $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out" 316 $(Q)$(REPORT) $(CURDIR)/run.out 317 318# re-run the tests from an existing kernel 319rerun: 320 $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out" 321 $(Q)$(REPORT) $(CURDIR)/run.out 322 323# report with existing test log 324report: 325 $(Q)$(REPORT) $(CURDIR)/run.out 326 327clean: 328 $(call QUIET_CLEAN, sysroot) 329 $(Q)rm -rf sysroot 330 $(call QUIET_CLEAN, nolibc-test) 331 $(Q)rm -f nolibc-test 332 $(call QUIET_CLEAN, libc-test) 333 $(Q)rm -f libc-test 334 $(call QUIET_CLEAN, initramfs.cpio) 335 $(Q)rm -rf initramfs.cpio 336 $(call QUIET_CLEAN, initramfs) 337 $(Q)rm -rf initramfs 338 $(call QUIET_CLEAN, run.out) 339 $(Q)rm -rf run.out 340 341.PHONY: sysroot/$(ARCH)/include 342