xref: /linux/tools/testing/selftests/nolibc/Makefile (revision a47b4b9fbaa157e8957ea712d63d559625503ad9)
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_ppc         = powerpc
51ARCH_ppc64       = powerpc
52ARCH_ppc64le     = powerpc
53ARCH_mips32le    = mips
54ARCH_mips32be    = mips
55ARCH_riscv64     = riscv
56ARCH            := $(or $(ARCH_$(XARCH)),$(XARCH))
57
58# kernel image names by architecture
59IMAGE_i386       = arch/x86/boot/bzImage
60IMAGE_x86_64     = arch/x86/boot/bzImage
61IMAGE_x86        = arch/x86/boot/bzImage
62IMAGE_arm64      = arch/arm64/boot/Image
63IMAGE_arm        = arch/arm/boot/zImage
64IMAGE_mips32le   = vmlinuz
65IMAGE_mips32be   = vmlinuz
66IMAGE_ppc        = vmlinux
67IMAGE_ppc64      = vmlinux
68IMAGE_ppc64le    = arch/powerpc/boot/zImage
69IMAGE_riscv      = arch/riscv/boot/Image
70IMAGE_riscv64    = arch/riscv/boot/Image
71IMAGE_s390       = arch/s390/boot/bzImage
72IMAGE_loongarch  = arch/loongarch/boot/vmlinuz.efi
73IMAGE            = $(objtree)/$(IMAGE_$(XARCH))
74IMAGE_NAME       = $(notdir $(IMAGE))
75
76# default kernel configurations that appear to be usable
77DEFCONFIG_i386       = defconfig
78DEFCONFIG_x86_64     = defconfig
79DEFCONFIG_x86        = defconfig
80DEFCONFIG_arm64      = defconfig
81DEFCONFIG_arm        = multi_v7_defconfig
82DEFCONFIG_mips32le   = malta_defconfig
83DEFCONFIG_mips32be   = malta_defconfig
84DEFCONFIG_ppc        = pmac32_defconfig
85DEFCONFIG_ppc64      = powernv_be_defconfig
86DEFCONFIG_ppc64le    = powernv_defconfig
87DEFCONFIG_riscv      = defconfig
88DEFCONFIG_riscv64    = defconfig
89DEFCONFIG_s390       = defconfig
90DEFCONFIG_loongarch  = defconfig
91DEFCONFIG            = $(DEFCONFIG_$(XARCH))
92
93EXTRACONFIG_mips32be = -d CONFIG_CPU_LITTLE_ENDIAN -e CONFIG_CPU_BIG_ENDIAN
94EXTRACONFIG           = $(EXTRACONFIG_$(XARCH))
95
96# optional tests to run (default = all)
97TEST =
98
99# QEMU_ARCH: arch names used by qemu
100QEMU_ARCH_i386       = i386
101QEMU_ARCH_x86_64     = x86_64
102QEMU_ARCH_x86        = x86_64
103QEMU_ARCH_arm64      = aarch64
104QEMU_ARCH_arm        = arm
105QEMU_ARCH_mips32le   = mipsel  # works with malta_defconfig
106QEMU_ARCH_mips32be  = mips
107QEMU_ARCH_ppc        = ppc
108QEMU_ARCH_ppc64      = ppc64
109QEMU_ARCH_ppc64le    = ppc64
110QEMU_ARCH_riscv      = riscv64
111QEMU_ARCH_riscv64    = riscv64
112QEMU_ARCH_s390       = s390x
113QEMU_ARCH_loongarch  = loongarch64
114QEMU_ARCH            = $(QEMU_ARCH_$(XARCH))
115
116QEMU_ARCH_USER_ppc64le = ppc64le
117QEMU_ARCH_USER         = $(or $(QEMU_ARCH_USER_$(XARCH)),$(QEMU_ARCH_$(XARCH)))
118
119QEMU_BIOS_DIR = /usr/share/edk2/
120QEMU_BIOS_loongarch = $(QEMU_BIOS_DIR)/loongarch64/OVMF_CODE.fd
121
122ifneq ($(QEMU_BIOS_$(XARCH)),)
123QEMU_ARGS_BIOS = -bios $(QEMU_BIOS_$(XARCH))
124endif
125
126# QEMU_ARGS : some arch-specific args to pass to qemu
127QEMU_ARGS_i386       = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
128QEMU_ARGS_x86_64     = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
129QEMU_ARGS_x86        = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
130QEMU_ARGS_arm64      = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
131QEMU_ARGS_arm        = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
132QEMU_ARGS_mips32le   = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
133QEMU_ARGS_mips32be   = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
134QEMU_ARGS_ppc        = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
135QEMU_ARGS_ppc64      = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
136QEMU_ARGS_ppc64le    = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
137QEMU_ARGS_riscv      = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
138QEMU_ARGS_riscv64    = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
139QEMU_ARGS_s390       = -M s390-ccw-virtio -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
140QEMU_ARGS_loongarch  = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
141QEMU_ARGS            = -m 1G $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_BIOS) $(QEMU_ARGS_EXTRA)
142
143# OUTPUT is only set when run from the main makefile, otherwise
144# it defaults to this nolibc directory.
145OUTPUT ?= $(CURDIR)/
146
147ifeq ($(V),1)
148Q=
149else
150Q=@
151endif
152
153CFLAGS_i386 = $(call cc-option,-m32)
154CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
155CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
156CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cc-option,-mabi=elfv2)
157CFLAGS_s390 = -m64
158CFLAGS_mips32le = -EL -mabi=32 -fPIC
159CFLAGS_mips32be = -EB -mabi=32
160CFLAGS_STACKPROTECTOR ?= $(call cc-option,-mstack-protector-guard=global $(call cc-option,-fstack-protector-all))
161CFLAGS  ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra \
162		$(call cc-option,-fno-stack-protector) \
163		$(CFLAGS_$(XARCH)) $(CFLAGS_STACKPROTECTOR) $(CFLAGS_EXTRA)
164LDFLAGS :=
165
166LIBGCC := -lgcc
167
168ifneq ($(LLVM),)
169# Not needed for clang
170LIBGCC :=
171endif
172
173# Modify CFLAGS based on LLVM=
174include $(srctree)/tools/scripts/Makefile.include
175
176# GCC uses "s390", clang "systemz"
177CLANG_CROSS_FLAGS := $(subst --target=s390-linux,--target=systemz-linux,$(CLANG_CROSS_FLAGS))
178
179REPORT  ?= awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$/{if (!f) printf("\n"); f++; print;} /\[SKIPPED\][\r]*$$/{s++} \
180		END{ printf("\n%3d test(s): %3d passed, %3d skipped, %3d failed => status: ", p+s+f, p, s, f); \
181		if (f || !p) printf("failure\n"); else if (s) printf("warning\n"); else printf("success\n");; \
182		printf("\nSee all results in %s\n", ARGV[1]); }'
183
184help:
185	@echo "Supported targets under selftests/nolibc:"
186	@echo "  all               call the \"run\" target below"
187	@echo "  help              this help"
188	@echo "  sysroot           create the nolibc sysroot here (uses \$$ARCH)"
189	@echo "  nolibc-test       build the executable (uses \$$CC and \$$CROSS_COMPILE)"
190	@echo "  libc-test         build an executable using the compiler's default libc instead"
191	@echo "  run-user          runs the executable under QEMU (uses \$$XARCH, \$$TEST)"
192	@echo "  initramfs.cpio    prepare the initramfs archive with nolibc-test"
193	@echo "  initramfs         prepare the initramfs tree with nolibc-test"
194	@echo "  defconfig         create a fresh new default config (uses \$$XARCH)"
195	@echo "  kernel            (re)build the kernel (uses \$$XARCH)"
196	@echo "  kernel-standalone (re)build the kernel with the initramfs (uses \$$XARCH)"
197	@echo "  run               runs the kernel in QEMU after building it (uses \$$XARCH, \$$TEST)"
198	@echo "  rerun             runs a previously prebuilt kernel in QEMU (uses \$$XARCH, \$$TEST)"
199	@echo "  clean             clean the sysroot, initramfs, build and output files"
200	@echo ""
201	@echo "The output file is \"run.out\". Test ranges may be passed using \$$TEST."
202	@echo ""
203	@echo "Currently using the following variables:"
204	@echo "  ARCH          = $(ARCH)"
205	@echo "  XARCH         = $(XARCH)"
206	@echo "  CROSS_COMPILE = $(CROSS_COMPILE)"
207	@echo "  CC            = $(CC)"
208	@echo "  OUTPUT        = $(OUTPUT)"
209	@echo "  TEST          = $(TEST)"
210	@echo "  QEMU_ARCH     = $(if $(QEMU_ARCH),$(QEMU_ARCH),UNKNOWN_ARCH) [determined from \$$XARCH]"
211	@echo "  IMAGE_NAME    = $(if $(IMAGE_NAME),$(IMAGE_NAME),UNKNOWN_ARCH) [determined from \$$XARCH]"
212	@echo ""
213
214all: run
215
216sysroot: sysroot/$(ARCH)/include
217
218sysroot/$(ARCH)/include:
219	$(Q)rm -rf sysroot/$(ARCH) sysroot/sysroot
220	$(QUIET_MKDIR)mkdir -p sysroot
221	$(Q)$(MAKE) -C $(srctree) outputmakefile
222	$(Q)$(MAKE) -C $(srctree)/tools/include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone
223	$(Q)mv sysroot/sysroot sysroot/$(ARCH)
224
225ifneq ($(NOLIBC_SYSROOT),0)
226nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include
227	$(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
228	  -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c $(LIBGCC)
229else
230nolibc-test: nolibc-test.c nolibc-test-linkage.c
231	$(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
232	  -nostdlib -static -include $(srctree)/tools/include/nolibc/nolibc.h nolibc-test.c nolibc-test-linkage.c $(LIBGCC)
233endif
234
235libc-test: nolibc-test.c nolibc-test-linkage.c
236	$(QUIET_CC)$(HOSTCC) -o $@ nolibc-test.c nolibc-test-linkage.c
237
238# local libc-test
239run-libc-test: libc-test
240	$(Q)./libc-test > "$(CURDIR)/run.out" || :
241	$(Q)$(REPORT) $(CURDIR)/run.out
242
243# local nolibc-test
244run-nolibc-test: nolibc-test
245	$(Q)./nolibc-test > "$(CURDIR)/run.out" || :
246	$(Q)$(REPORT) $(CURDIR)/run.out
247
248# qemu user-land test
249run-user: nolibc-test
250	$(Q)qemu-$(QEMU_ARCH_USER) ./nolibc-test > "$(CURDIR)/run.out" || :
251	$(Q)$(REPORT) $(CURDIR)/run.out
252
253initramfs.cpio: kernel nolibc-test
254	$(QUIET_GEN)echo 'file /init nolibc-test 755 0 0' | $(objtree)/usr/gen_init_cpio - > initramfs.cpio
255
256initramfs: nolibc-test
257	$(QUIET_MKDIR)mkdir -p initramfs
258	$(call QUIET_INSTALL, initramfs/init)
259	$(Q)cp nolibc-test initramfs/init
260
261defconfig:
262	$(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) mrproper $(DEFCONFIG) prepare
263	$(Q)if [ -n "$(EXTRACONFIG)" ]; then \
264		$(srctree)/scripts/config --file $(objtree)/.config $(EXTRACONFIG); \
265		$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) olddefconfig < /dev/null; \
266	fi
267
268kernel:
269	$(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) < /dev/null
270
271kernel-standalone: initramfs
272	$(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs < /dev/null
273
274# run the tests after building the kernel
275run: kernel initramfs.cpio
276	$(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
277	$(Q)$(REPORT) $(CURDIR)/run.out
278
279# re-run the tests from an existing kernel
280rerun:
281	$(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
282	$(Q)$(REPORT) $(CURDIR)/run.out
283
284# report with existing test log
285report:
286	$(Q)$(REPORT) $(CURDIR)/run.out
287
288clean:
289	$(call QUIET_CLEAN, sysroot)
290	$(Q)rm -rf sysroot
291	$(call QUIET_CLEAN, nolibc-test)
292	$(Q)rm -f nolibc-test
293	$(call QUIET_CLEAN, libc-test)
294	$(Q)rm -f libc-test
295	$(call QUIET_CLEAN, initramfs.cpio)
296	$(Q)rm -rf initramfs.cpio
297	$(call QUIET_CLEAN, initramfs)
298	$(Q)rm -rf initramfs
299	$(call QUIET_CLEAN, run.out)
300	$(Q)rm -rf run.out
301
302.PHONY: sysroot/$(ARCH)/include
303