xref: /linux/tools/testing/selftests/nolibc/Makefile (revision c035f0268b87fc21f517f638b3bad26c81babc85) 
1# SPDX-License-Identifier: GPL-2.0
2# Makefile for nolibc tests
3include ../../../scripts/Makefile.include
4# We need this for the "cc-option" macro.
5include ../../../build/Build.include
6
7# we're in ".../tools/testing/selftests/nolibc"
8ifeq ($(srctree),)
9srctree := $(patsubst %/tools/testing/selftests/,%,$(dir $(CURDIR)))
10endif
11
12ifeq ($(ARCH),)
13include $(srctree)/scripts/subarch.include
14ARCH = $(SUBARCH)
15endif
16
17# XARCH extends the kernel's ARCH with a few variants of the same
18# architecture that only differ by the configuration, the toolchain
19# and the Qemu program used. It is copied as-is into ARCH except for
20# a few specific values which are mapped like this:
21#
22#  XARCH        | ARCH      | config
23#  -------------|-----------|-------------------------
24#  ppc          | powerpc   | 32 bits
25#  ppc64        | powerpc   | 64 bits big endian
26#  ppc64le      | powerpc   | 64 bits little endian
27#
28# It is recommended to only use XARCH, though it does not harm if
29# ARCH is already set. For simplicity, ARCH is sufficient for all
30# architectures where both are equal.
31
32# configure default variants for target kernel supported architectures
33XARCH_powerpc    = ppc
34XARCH            = $(or $(XARCH_$(ARCH)),$(ARCH))
35
36# map from user input variants to their kernel supported architectures
37ARCH_ppc         = powerpc
38ARCH_ppc64       = powerpc
39ARCH_ppc64le     = powerpc
40ARCH            := $(or $(ARCH_$(XARCH)),$(XARCH))
41
42# kernel image names by architecture
43IMAGE_i386       = arch/x86/boot/bzImage
44IMAGE_x86_64     = arch/x86/boot/bzImage
45IMAGE_x86        = arch/x86/boot/bzImage
46IMAGE_arm64      = arch/arm64/boot/Image
47IMAGE_arm        = arch/arm/boot/zImage
48IMAGE_mips       = vmlinuz
49IMAGE_ppc        = vmlinux
50IMAGE_ppc64      = vmlinux
51IMAGE_ppc64le    = arch/powerpc/boot/zImage
52IMAGE_riscv      = arch/riscv/boot/Image
53IMAGE_s390       = arch/s390/boot/bzImage
54IMAGE_loongarch  = arch/loongarch/boot/vmlinuz.efi
55IMAGE            = $(IMAGE_$(XARCH))
56IMAGE_NAME       = $(notdir $(IMAGE))
57
58# default kernel configurations that appear to be usable
59DEFCONFIG_i386       = defconfig
60DEFCONFIG_x86_64     = defconfig
61DEFCONFIG_x86        = defconfig
62DEFCONFIG_arm64      = defconfig
63DEFCONFIG_arm        = multi_v7_defconfig
64DEFCONFIG_mips       = malta_defconfig
65DEFCONFIG_ppc        = pmac32_defconfig
66DEFCONFIG_ppc64      = powernv_be_defconfig
67DEFCONFIG_ppc64le    = powernv_defconfig
68DEFCONFIG_riscv      = defconfig
69DEFCONFIG_s390       = defconfig
70DEFCONFIG_loongarch  = defconfig
71DEFCONFIG            = $(DEFCONFIG_$(XARCH))
72
73# optional tests to run (default = all)
74TEST =
75
76# QEMU_ARCH: arch names used by qemu
77QEMU_ARCH_i386       = i386
78QEMU_ARCH_x86_64     = x86_64
79QEMU_ARCH_x86        = x86_64
80QEMU_ARCH_arm64      = aarch64
81QEMU_ARCH_arm        = arm
82QEMU_ARCH_mips       = mipsel  # works with malta_defconfig
83QEMU_ARCH_ppc        = ppc
84QEMU_ARCH_ppc64      = ppc64
85QEMU_ARCH_ppc64le    = ppc64
86QEMU_ARCH_riscv      = riscv64
87QEMU_ARCH_s390       = s390x
88QEMU_ARCH_loongarch  = loongarch64
89QEMU_ARCH            = $(QEMU_ARCH_$(XARCH))
90
91# QEMU_ARGS : some arch-specific args to pass to qemu
92QEMU_ARGS_i386       = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
93QEMU_ARGS_x86_64     = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
94QEMU_ARGS_x86        = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
95QEMU_ARGS_arm64      = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
96QEMU_ARGS_arm        = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
97QEMU_ARGS_mips       = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
98QEMU_ARGS_ppc        = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
99QEMU_ARGS_ppc64      = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
100QEMU_ARGS_ppc64le    = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
101QEMU_ARGS_riscv      = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
102QEMU_ARGS_s390       = -M s390-ccw-virtio -m 1G -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
103QEMU_ARGS_loongarch  = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
104QEMU_ARGS            = $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_EXTRA)
105
106# OUTPUT is only set when run from the main makefile, otherwise
107# it defaults to this nolibc directory.
108OUTPUT ?= $(CURDIR)/
109
110ifeq ($(V),1)
111Q=
112else
113Q=@
114endif
115
116CFLAGS_i386 = $(call cc-option,-m32)
117CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
118CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
119CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cc-option,-mabi=elfv2)
120CFLAGS_s390 = -m64
121CFLAGS_mips = -EL
122CFLAGS_STACKPROTECTOR ?= $(call cc-option,-mstack-protector-guard=global $(call cc-option,-fstack-protector-all))
123CFLAGS  ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra \
124		$(call cc-option,-fno-stack-protector) \
125		$(CFLAGS_$(XARCH)) $(CFLAGS_STACKPROTECTOR)
126LDFLAGS :=
127
128REPORT  ?= awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$/{if (!f) printf("\n"); f++; print;} /\[SKIPPED\][\r]*$$/{s++} \
129		END{ printf("\n%3d test(s): %3d passed, %3d skipped, %3d failed => status: ", p+s+f, p, s, f); \
130		if (f) printf("failure\n"); else if (s) printf("warning\n"); else printf("success\n");; \
131		printf("\nSee all results in %s\n", ARGV[1]); }'
132
133help:
134	@echo "Supported targets under selftests/nolibc:"
135	@echo "  all               call the \"run\" target below"
136	@echo "  help              this help"
137	@echo "  sysroot           create the nolibc sysroot here (uses \$$ARCH)"
138	@echo "  nolibc-test       build the executable (uses \$$CC and \$$CROSS_COMPILE)"
139	@echo "  libc-test         build an executable using the compiler's default libc instead"
140	@echo "  run-user          runs the executable under QEMU (uses \$$XARCH, \$$TEST)"
141	@echo "  initramfs.cpio    prepare the initramfs archive with nolibc-test"
142	@echo "  initramfs         prepare the initramfs tree with nolibc-test"
143	@echo "  defconfig         create a fresh new default config (uses \$$XARCH)"
144	@echo "  kernel            (re)build the kernel (uses \$$XARCH)"
145	@echo "  kernel-standalone (re)build the kernel with the initramfs (uses \$$XARCH)"
146	@echo "  run               runs the kernel in QEMU after building it (uses \$$XARCH, \$$TEST)"
147	@echo "  rerun             runs a previously prebuilt kernel in QEMU (uses \$$XARCH, \$$TEST)"
148	@echo "  clean             clean the sysroot, initramfs, build and output files"
149	@echo ""
150	@echo "The output file is \"run.out\". Test ranges may be passed using \$$TEST."
151	@echo ""
152	@echo "Currently using the following variables:"
153	@echo "  ARCH          = $(ARCH)"
154	@echo "  XARCH         = $(XARCH)"
155	@echo "  CROSS_COMPILE = $(CROSS_COMPILE)"
156	@echo "  CC            = $(CC)"
157	@echo "  OUTPUT        = $(OUTPUT)"
158	@echo "  TEST          = $(TEST)"
159	@echo "  QEMU_ARCH     = $(if $(QEMU_ARCH),$(QEMU_ARCH),UNKNOWN_ARCH) [determined from \$$XARCH]"
160	@echo "  IMAGE_NAME    = $(if $(IMAGE_NAME),$(IMAGE_NAME),UNKNOWN_ARCH) [determined from \$$XARCH]"
161	@echo ""
162
163all: run
164
165sysroot: sysroot/$(ARCH)/include
166
167sysroot/$(ARCH)/include:
168	$(Q)rm -rf sysroot/$(ARCH) sysroot/sysroot
169	$(QUIET_MKDIR)mkdir -p sysroot
170	$(Q)$(MAKE) -C ../../../include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone
171	$(Q)mv sysroot/sysroot sysroot/$(ARCH)
172
173ifneq ($(NOLIBC_SYSROOT),0)
174nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include
175	$(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
176	  -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c -lgcc
177else
178nolibc-test: nolibc-test.c nolibc-test-linkage.c
179	$(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
180	  -nostdlib -static -include ../../../include/nolibc/nolibc.h nolibc-test.c nolibc-test-linkage.c -lgcc
181endif
182
183libc-test: nolibc-test.c nolibc-test-linkage.c
184	$(QUIET_CC)$(HOSTCC) -o $@ nolibc-test.c nolibc-test-linkage.c
185
186# local libc-test
187run-libc-test: libc-test
188	$(Q)./libc-test > "$(CURDIR)/run.out" || :
189	$(Q)$(REPORT) $(CURDIR)/run.out
190
191# local nolibc-test
192run-nolibc-test: nolibc-test
193	$(Q)./nolibc-test > "$(CURDIR)/run.out" || :
194	$(Q)$(REPORT) $(CURDIR)/run.out
195
196# qemu user-land test
197run-user: nolibc-test
198	$(Q)qemu-$(QEMU_ARCH) ./nolibc-test > "$(CURDIR)/run.out" || :
199	$(Q)$(REPORT) $(CURDIR)/run.out
200
201initramfs.cpio: kernel nolibc-test
202	$(QUIET_GEN)echo 'file /init nolibc-test 755 0 0' | $(srctree)/usr/gen_init_cpio - > initramfs.cpio
203
204initramfs: nolibc-test
205	$(QUIET_MKDIR)mkdir -p initramfs
206	$(call QUIET_INSTALL, initramfs/init)
207	$(Q)cp nolibc-test initramfs/init
208
209defconfig:
210	$(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) mrproper $(DEFCONFIG) prepare
211
212kernel:
213	$(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME)
214
215kernel-standalone: initramfs
216	$(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs
217
218# run the tests after building the kernel
219run: kernel initramfs.cpio
220	$(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(srctree)/$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
221	$(Q)$(REPORT) $(CURDIR)/run.out
222
223# re-run the tests from an existing kernel
224rerun:
225	$(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(srctree)/$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
226	$(Q)$(REPORT) $(CURDIR)/run.out
227
228# report with existing test log
229report:
230	$(Q)$(REPORT) $(CURDIR)/run.out
231
232clean:
233	$(call QUIET_CLEAN, sysroot)
234	$(Q)rm -rf sysroot
235	$(call QUIET_CLEAN, nolibc-test)
236	$(Q)rm -f nolibc-test
237	$(call QUIET_CLEAN, libc-test)
238	$(Q)rm -f libc-test
239	$(call QUIET_CLEAN, initramfs.cpio)
240	$(Q)rm -rf initramfs.cpio
241	$(call QUIET_CLEAN, initramfs)
242	$(Q)rm -rf initramfs
243	$(call QUIET_CLEAN, run.out)
244	$(Q)rm -rf run.out
245
246.PHONY: sysroot/$(ARCH)/include
247