tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2# Makefile for nolibc tests
3include ../../../scripts/Makefile.include
4
5# we're in ".../tools/testing/selftests/nolibc"
6ifeq ($(srctree),)
7srctree := $(patsubst %/tools/testing/selftests/,%,$(dir $(CURDIR)))
8endif
9
10ifeq ($(ARCH),)
11include $(srctree)/scripts/subarch.include
12ARCH = $(SUBARCH)
13endif
14
15# kernel image names by architecture
16IMAGE_i386 = arch/x86/boot/bzImage
17IMAGE_x86_64 = arch/x86/boot/bzImage
18IMAGE_x86 = arch/x86/boot/bzImage
19IMAGE_arm64 = arch/arm64/boot/Image
20IMAGE_arm = arch/arm/boot/zImage
21IMAGE_mips = vmlinuz
22IMAGE_riscv = arch/riscv/boot/Image
23IMAGE_s390 = arch/s390/boot/bzImage
24IMAGE = $(IMAGE_$(ARCH))
25IMAGE_NAME = $(notdir $(IMAGE))
26
27# default kernel configurations that appear to be usable
28DEFCONFIG_i386 = defconfig
29DEFCONFIG_x86_64 = defconfig
30DEFCONFIG_x86 = defconfig
31DEFCONFIG_arm64 = defconfig
32DEFCONFIG_arm = multi_v7_defconfig
33DEFCONFIG_mips = malta_defconfig
34DEFCONFIG_riscv = defconfig
35DEFCONFIG_s390 = defconfig
36DEFCONFIG = $(DEFCONFIG_$(ARCH))
37
38# optional tests to run (default = all)
39TEST =
40
41# QEMU_ARCH: arch names used by qemu
42QEMU_ARCH_i386 = i386
43QEMU_ARCH_x86_64 = x86_64
44QEMU_ARCH_x86 = x86_64
45QEMU_ARCH_arm64 = aarch64
46QEMU_ARCH_arm = arm
47QEMU_ARCH_mips = mipsel # works with malta_defconfig
48QEMU_ARCH_riscv = riscv64
49QEMU_ARCH_s390 = s390x
50QEMU_ARCH = $(QEMU_ARCH_$(ARCH))
51
52# QEMU_ARGS : some arch-specific args to pass to qemu
53QEMU_ARGS_i386 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
54QEMU_ARGS_x86_64 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
55QEMU_ARGS_x86 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
56QEMU_ARGS_arm64 = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
57QEMU_ARGS_arm = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
58QEMU_ARGS_mips = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
59QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
60QEMU_ARGS_s390 = -M s390-ccw-virtio -m 1G -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
61QEMU_ARGS = $(QEMU_ARGS_$(ARCH))
62
63# OUTPUT is only set when run from the main makefile, otherwise
64# it defaults to this nolibc directory.
65OUTPUT ?= $(CURDIR)/
66
67ifeq ($(V),1)
68Q=
69else
70Q=@
71endif
72
73CFLAGS_s390 = -m64
74CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables $(CFLAGS_$(ARCH))
75LDFLAGS := -s
76
77help:
78 @echo "Supported targets under selftests/nolibc:"
79 @echo " all call the \"run\" target below"
80 @echo " help this help"
81 @echo " sysroot create the nolibc sysroot here (uses \$$ARCH)"
82 @echo " nolibc-test build the executable (uses \$$CC and \$$CROSS_COMPILE)"
83 @echo " run-user runs the executable under QEMU (uses \$$ARCH, \$$TEST)"
84 @echo " initramfs prepare the initramfs with nolibc-test"
85 @echo " defconfig create a fresh new default config (uses \$$ARCH)"
86 @echo " kernel (re)build the kernel with the initramfs (uses \$$ARCH)"
87 @echo " run runs the kernel in QEMU after building it (uses \$$ARCH, \$$TEST)"
88 @echo " rerun runs a previously prebuilt kernel in QEMU (uses \$$ARCH, \$$TEST)"
89 @echo " clean clean the sysroot, initramfs, build and output files"
90 @echo ""
91 @echo "The output file is \"run.out\". Test ranges may be passed using \$$TEST."
92 @echo ""
93 @echo "Currently using the following variables:"
94 @echo " ARCH = $(ARCH)"
95 @echo " CROSS_COMPILE = $(CROSS_COMPILE)"
96 @echo " CC = $(CC)"
97 @echo " OUTPUT = $(OUTPUT)"
98 @echo " TEST = $(TEST)"
99 @echo " QEMU_ARCH = $(if $(QEMU_ARCH),$(QEMU_ARCH),UNKNOWN_ARCH) [determined from \$$ARCH]"
100 @echo " IMAGE_NAME = $(if $(IMAGE_NAME),$(IMAGE_NAME),UNKNOWN_ARCH) [determined from \$$ARCH]"
101 @echo ""
102
103all: run
104
105sysroot: sysroot/$(ARCH)/include
106
107sysroot/$(ARCH)/include:
108 $(Q)rm -rf sysroot/$(ARCH) sysroot/sysroot
109 $(QUIET_MKDIR)mkdir -p sysroot
110 $(Q)$(MAKE) -C ../../../include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone
111 $(Q)mv sysroot/sysroot sysroot/$(ARCH)
112
113nolibc-test: nolibc-test.c sysroot/$(ARCH)/include
114 $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
115 -nostdlib -static -Isysroot/$(ARCH)/include $< -lgcc
116
117# qemu user-land test
118run-user: nolibc-test
119 $(Q)qemu-$(QEMU_ARCH) ./nolibc-test > "$(CURDIR)/run.out" || :
120 $(Q)grep -w FAIL "$(CURDIR)/run.out" && echo "See all results in $(CURDIR)/run.out" || echo "$$(grep -c ^[0-9].*OK $(CURDIR)/run.out) test(s) passed."
121
122initramfs: nolibc-test
123 $(QUIET_MKDIR)mkdir -p initramfs
124 $(call QUIET_INSTALL, initramfs/init)
125 $(Q)cp nolibc-test initramfs/init
126
127defconfig:
128 $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) mrproper $(DEFCONFIG) prepare
129
130kernel: initramfs
131 $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs
132
133# run the tests after building the kernel
134run: kernel
135 $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(srctree)/$(IMAGE)" -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
136 $(Q)grep -w FAIL "$(CURDIR)/run.out" && echo "See all results in $(CURDIR)/run.out" || echo "$$(grep -c ^[0-9].*OK $(CURDIR)/run.out) test(s) passed."
137
138# re-run the tests from an existing kernel
139rerun:
140 $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(srctree)/$(IMAGE)" -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
141 $(Q)grep -w FAIL "$(CURDIR)/run.out" && echo "See all results in $(CURDIR)/run.out" || echo "$$(grep -c ^[0-9].*OK $(CURDIR)/run.out) test(s) passed."
142
143clean:
144 $(call QUIET_CLEAN, sysroot)
145 $(Q)rm -rf sysroot
146 $(call QUIET_CLEAN, nolibc-test)
147 $(Q)rm -f nolibc-test
148 $(call QUIET_CLEAN, initramfs)
149 $(Q)rm -rf initramfs
150 $(call QUIET_CLEAN, run.out)
151 $(Q)rm -rf run.out
152
153.PHONY: sysroot/$(ARCH)/include