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 = $(or $(XARCH_$(ARCH)),$(ARCH)) 47 48# map from user input variants to their kernel supported architectures 49ARCH_ppc = powerpc 50ARCH_ppc64 = powerpc 51ARCH_ppc64le = powerpc 52ARCH_mips32le = mips 53ARCH_mips32be = mips 54ARCH := $(or $(ARCH_$(XARCH)),$(XARCH)) 55 56# kernel image names by architecture 57IMAGE_i386 = arch/x86/boot/bzImage 58IMAGE_x86_64 = arch/x86/boot/bzImage 59IMAGE_x86 = arch/x86/boot/bzImage 60IMAGE_arm64 = arch/arm64/boot/Image 61IMAGE_arm = arch/arm/boot/zImage 62IMAGE_mips32le = vmlinuz 63IMAGE_mips32be = vmlinuz 64IMAGE_ppc = vmlinux 65IMAGE_ppc64 = vmlinux 66IMAGE_ppc64le = arch/powerpc/boot/zImage 67IMAGE_riscv = arch/riscv/boot/Image 68IMAGE_s390 = arch/s390/boot/bzImage 69IMAGE_loongarch = arch/loongarch/boot/vmlinuz.efi 70IMAGE = $(objtree)/$(IMAGE_$(XARCH)) 71IMAGE_NAME = $(notdir $(IMAGE)) 72 73# default kernel configurations that appear to be usable 74DEFCONFIG_i386 = defconfig 75DEFCONFIG_x86_64 = defconfig 76DEFCONFIG_x86 = defconfig 77DEFCONFIG_arm64 = defconfig 78DEFCONFIG_arm = multi_v7_defconfig 79DEFCONFIG_mips32le = malta_defconfig 80DEFCONFIG_mips32be = malta_defconfig 81DEFCONFIG_ppc = pmac32_defconfig 82DEFCONFIG_ppc64 = powernv_be_defconfig 83DEFCONFIG_ppc64le = powernv_defconfig 84DEFCONFIG_riscv = defconfig 85DEFCONFIG_s390 = defconfig 86DEFCONFIG_loongarch = defconfig 87DEFCONFIG = $(DEFCONFIG_$(XARCH)) 88 89EXTRACONFIG_mips32be = -d CONFIG_CPU_LITTLE_ENDIAN -e CONFIG_CPU_BIG_ENDIAN 90EXTRACONFIG = $(EXTRACONFIG_$(XARCH)) 91 92# optional tests to run (default = all) 93TEST = 94 95# QEMU_ARCH: arch names used by qemu 96QEMU_ARCH_i386 = i386 97QEMU_ARCH_x86_64 = x86_64 98QEMU_ARCH_x86 = x86_64 99QEMU_ARCH_arm64 = aarch64 100QEMU_ARCH_arm = arm 101QEMU_ARCH_mips32le = mipsel # works with malta_defconfig 102QEMU_ARCH_mips32be = mips 103QEMU_ARCH_ppc = ppc 104QEMU_ARCH_ppc64 = ppc64 105QEMU_ARCH_ppc64le = ppc64 106QEMU_ARCH_riscv = riscv64 107QEMU_ARCH_s390 = s390x 108QEMU_ARCH_loongarch = loongarch64 109QEMU_ARCH = $(QEMU_ARCH_$(XARCH)) 110 111QEMU_ARCH_USER_ppc64le = ppc64le 112QEMU_ARCH_USER = $(or $(QEMU_ARCH_USER_$(XARCH)),$(QEMU_ARCH_$(XARCH))) 113 114QEMU_BIOS_DIR = /usr/share/edk2/ 115QEMU_BIOS_loongarch = $(QEMU_BIOS_DIR)/loongarch64/OVMF_CODE.fd 116 117ifneq ($(QEMU_BIOS_$(XARCH)),) 118QEMU_ARGS_BIOS = -bios $(QEMU_BIOS_$(XARCH)) 119endif 120 121# QEMU_ARGS : some arch-specific args to pass to qemu 122QEMU_ARGS_i386 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 123QEMU_ARGS_x86_64 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 124QEMU_ARGS_x86 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)" 125QEMU_ARGS_arm64 = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 126QEMU_ARGS_arm = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 127QEMU_ARGS_mips32le = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 128QEMU_ARGS_mips32be = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)" 129QEMU_ARGS_ppc = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 130QEMU_ARGS_ppc64 = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 131QEMU_ARGS_ppc64le = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 132QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 133QEMU_ARGS_s390 = -M s390-ccw-virtio -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 134QEMU_ARGS_loongarch = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" 135QEMU_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. 139OUTPUT ?= $(CURDIR)/ 140 141ifeq ($(V),1) 142Q= 143else 144Q=@ 145endif 146 147CFLAGS_i386 = $(call cc-option,-m32) 148CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cc-option,-mmultiple) 149CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cc-option,-mmultiple) 150CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cc-option,-mabi=elfv2) 151CFLAGS_s390 = -m64 152CFLAGS_mips32le = -EL -mabi=32 -fPIC 153CFLAGS_mips32be = -EB -mabi=32 154CFLAGS_STACKPROTECTOR ?= $(call cc-option,-mstack-protector-guard=global $(call cc-option,-fstack-protector-all)) 155CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra \ 156 $(call cc-option,-fno-stack-protector) \ 157 $(CFLAGS_$(XARCH)) $(CFLAGS_STACKPROTECTOR) $(CFLAGS_EXTRA) 158LDFLAGS := 159 160LIBGCC := -lgcc 161 162ifneq ($(LLVM),) 163# Not needed for clang 164LIBGCC := 165endif 166 167# Modify CFLAGS based on LLVM= 168include $(srctree)/tools/scripts/Makefile.include 169 170# GCC uses "s390", clang "systemz" 171CLANG_CROSS_FLAGS := $(subst --target=s390-linux,--target=systemz-linux,$(CLANG_CROSS_FLAGS)) 172 173REPORT ?= 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 178help: 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 208all: run 209 210sysroot: sysroot/$(ARCH)/include 211 212sysroot/$(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 219ifneq ($(NOLIBC_SYSROOT),0) 220nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include 221 $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \ 222 -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c $(LIBGCC) 223else 224nolibc-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) 227endif 228 229libc-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 233run-libc-test: libc-test 234 $(Q)./libc-test > "$(CURDIR)/run.out" || : 235 $(Q)$(REPORT) $(CURDIR)/run.out 236 237# local nolibc-test 238run-nolibc-test: nolibc-test 239 $(Q)./nolibc-test > "$(CURDIR)/run.out" || : 240 $(Q)$(REPORT) $(CURDIR)/run.out 241 242# qemu user-land test 243run-user: nolibc-test 244 $(Q)qemu-$(QEMU_ARCH_USER) ./nolibc-test > "$(CURDIR)/run.out" || : 245 $(Q)$(REPORT) $(CURDIR)/run.out 246 247initramfs.cpio: kernel nolibc-test 248 $(QUIET_GEN)echo 'file /init nolibc-test 755 0 0' | $(objtree)/usr/gen_init_cpio - > initramfs.cpio 249 250initramfs: nolibc-test 251 $(QUIET_MKDIR)mkdir -p initramfs 252 $(call QUIET_INSTALL, initramfs/init) 253 $(Q)cp nolibc-test initramfs/init 254 255defconfig: 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 262kernel: 263 $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) < /dev/null 264 265kernel-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 269run: 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 274rerun: 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 279report: 280 $(Q)$(REPORT) $(CURDIR)/run.out 281 282clean: 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 297