1 # SPDX-License-Identifier: GPL-2.0
2 # Makefile for nolibc tests
3 # we're in ".../tools/testing/selftests/nolibc"
4 ifeq ($(srctree),)
5 srctree := $(patsubst %/tools/testing/selftests/,%,$(dir $(CURDIR)))
6 endif
7
8 include $(srctree)/tools/scripts/utilities.mak
9 # We need this for the "__cc-option" macro.
10 include $(srctree)/scripts/Makefile.compiler
11
12 ifneq ($(O),)
13 ifneq ($(call is-absolute,$(O)),y)
14 $(error Only absolute O= parameters are supported)
15 endif
16 objtree := $(O)
17 else
18 objtree ?= $(srctree)
19 endif
20
21 ifeq ($(ARCH),)
22 include $(srctree)/scripts/subarch.include
23 ARCH = $(SUBARCH)
24 endif
25
26 cc-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
44 XARCH_powerpc = ppc
45 XARCH_mips = mips32le
46 XARCH = $(or $(XARCH_$(ARCH)),$(ARCH))
47
48 # map from user input variants to their kernel supported architectures
49 ARCH_ppc = powerpc
50 ARCH_ppc64 = powerpc
51 ARCH_ppc64le = powerpc
52 ARCH_mips32le = mips
53 ARCH_mips32be = mips
54 ARCH := $(or $(ARCH_$(XARCH)),$(XARCH))
55
56 # kernel image names by architecture
57 IMAGE_i386 = arch/x86/boot/bzImage
58 IMAGE_x86_64 = arch/x86/boot/bzImage
59 IMAGE_x86 = arch/x86/boot/bzImage
60 IMAGE_arm64 = arch/arm64/boot/Image
61 IMAGE_arm = arch/arm/boot/zImage
62 IMAGE_mips32le = vmlinuz
63 IMAGE_mips32be = vmlinuz
64 IMAGE_ppc = vmlinux
65 IMAGE_ppc64 = vmlinux
66 IMAGE_ppc64le = arch/powerpc/boot/zImage
67 IMAGE_riscv = arch/riscv/boot/Image
68 IMAGE_s390 = arch/s390/boot/bzImage
69 IMAGE_loongarch = arch/loongarch/boot/vmlinuz.efi
70 IMAGE = $(objtree)/$(IMAGE_$(XARCH))
71 IMAGE_NAME = $(notdir $(IMAGE))
72
73 # default kernel configurations that appear to be usable
74 DEFCONFIG_i386 = defconfig
75 DEFCONFIG_x86_64 = defconfig
76 DEFCONFIG_x86 = defconfig
77 DEFCONFIG_arm64 = defconfig
78 DEFCONFIG_arm = multi_v7_defconfig
79 DEFCONFIG_mips32le = malta_defconfig
80 DEFCONFIG_mips32be = malta_defconfig
81 DEFCONFIG_ppc = pmac32_defconfig
82 DEFCONFIG_ppc64 = powernv_be_defconfig
83 DEFCONFIG_ppc64le = powernv_defconfig
84 DEFCONFIG_riscv = defconfig
85 DEFCONFIG_s390 = defconfig
86 DEFCONFIG_loongarch = defconfig
87 DEFCONFIG = $(DEFCONFIG_$(XARCH))
88
89 EXTRACONFIG_mips32be = -d CONFIG_CPU_LITTLE_ENDIAN -e CONFIG_CPU_BIG_ENDIAN
90 EXTRACONFIG = $(EXTRACONFIG_$(XARCH))
91
92 # optional tests to run (default = all)
93 TEST =
94
95 # QEMU_ARCH: arch names used by qemu
96 QEMU_ARCH_i386 = i386
97 QEMU_ARCH_x86_64 = x86_64
98 QEMU_ARCH_x86 = x86_64
99 QEMU_ARCH_arm64 = aarch64
100 QEMU_ARCH_arm = arm
101 QEMU_ARCH_mips32le = mipsel # works with malta_defconfig
102 QEMU_ARCH_mips32be = mips
103 QEMU_ARCH_ppc = ppc
104 QEMU_ARCH_ppc64 = ppc64
105 QEMU_ARCH_ppc64le = ppc64
106 QEMU_ARCH_riscv = riscv64
107 QEMU_ARCH_s390 = s390x
108 QEMU_ARCH_loongarch = loongarch64
109 QEMU_ARCH = $(QEMU_ARCH_$(XARCH))
110
111 QEMU_ARCH_USER_ppc64le = ppc64le
112 QEMU_ARCH_USER = $(or $(QEMU_ARCH_USER_$(XARCH)),$(QEMU_ARCH_$(XARCH)))
113
114 QEMU_BIOS_DIR = /usr/share/edk2/
115 QEMU_BIOS_loongarch = $(QEMU_BIOS_DIR)/loongarch64/OVMF_CODE.fd
116
117 ifneq ($(QEMU_BIOS_$(XARCH)),)
118 QEMU_ARGS_BIOS = -bios $(QEMU_BIOS_$(XARCH))
119 endif
120
121 # QEMU_ARGS : some arch-specific args to pass to qemu
122 QEMU_ARGS_i386 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
123 QEMU_ARGS_x86_64 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
124 QEMU_ARGS_x86 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
125 QEMU_ARGS_arm64 = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
126 QEMU_ARGS_arm = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
127 QEMU_ARGS_mips32le = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
128 QEMU_ARGS_mips32be = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
129 QEMU_ARGS_ppc = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
130 QEMU_ARGS_ppc64 = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
131 QEMU_ARGS_ppc64le = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
132 QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
133 QEMU_ARGS_s390 = -M s390-ccw-virtio -m 1G -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
134 QEMU_ARGS_loongarch = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
135 QEMU_ARGS = $(QEMU_ARGS_$(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.
139 OUTPUT ?= $(CURDIR)/
140
141 ifeq ($(V),1)
142 Q=
143 else
144 Q=@
145 endif
146
147 CFLAGS_i386 = $(call cc-option,-m32)
148 CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
149 CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
150 CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cc-option,-mabi=elfv2)
151 CFLAGS_s390 = -m64
152 CFLAGS_mips32le = -EL -mabi=32 -fPIC
153 CFLAGS_mips32be = -EB -mabi=32
154 CFLAGS_STACKPROTECTOR ?= $(call cc-option,-mstack-protector-guard=global $(call cc-option,-fstack-protector-all))
155 CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra \
156 $(call cc-option,-fno-stack-protector) \
157 $(CFLAGS_$(XARCH)) $(CFLAGS_STACKPROTECTOR) $(CFLAGS_EXTRA)
158 LDFLAGS :=
159
160 LIBGCC := -lgcc
161
162 ifneq ($(LLVM),)
163 # Not needed for clang
164 LIBGCC :=
165 endif
166
167 # Modify CFLAGS based on LLVM=
168 include $(srctree)/tools/scripts/Makefile.include
169
170 # GCC uses "s390", clang "systemz"
171 CLANG_CROSS_FLAGS := $(subst --target=s390-linux,--target=systemz-linux,$(CLANG_CROSS_FLAGS))
172
173 REPORT ?= 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
178 help:
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
208 all: run
209
210 sysroot: sysroot/$(ARCH)/include
211
212 sysroot/$(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
219 ifneq ($(NOLIBC_SYSROOT),0)
220 nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include
221 $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
222 -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c $(LIBGCC)
223 else
224 nolibc-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)
227 endif
228
229 libc-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
233 run-libc-test: libc-test
234 $(Q)./libc-test > "$(CURDIR)/run.out" || :
235 $(Q)$(REPORT) $(CURDIR)/run.out
236
237 # local nolibc-test
238 run-nolibc-test: nolibc-test
239 $(Q)./nolibc-test > "$(CURDIR)/run.out" || :
240 $(Q)$(REPORT) $(CURDIR)/run.out
241
242 # qemu user-land test
243 run-user: nolibc-test
244 $(Q)qemu-$(QEMU_ARCH_USER) ./nolibc-test > "$(CURDIR)/run.out" || :
245 $(Q)$(REPORT) $(CURDIR)/run.out
246
247 initramfs.cpio: kernel nolibc-test
248 $(QUIET_GEN)echo 'file /init nolibc-test 755 0 0' | $(objtree)/usr/gen_init_cpio - > initramfs.cpio
249
250 initramfs: nolibc-test
251 $(QUIET_MKDIR)mkdir -p initramfs
252 $(call QUIET_INSTALL, initramfs/init)
253 $(Q)cp nolibc-test initramfs/init
254
255 defconfig:
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
262 kernel:
263 $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) < /dev/null
264
265 kernel-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
269 run: 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
274 rerun:
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
279 report:
280 $(Q)$(REPORT) $(CURDIR)/run.out
281
282 clean:
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
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