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-rw-r--r--tools/testing/selftests/nolibc/Makefile281
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diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
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+++ b/tools/testing/selftests/nolibc/Makefile
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+# SPDX-License-Identifier: GPL-2.0
+# Makefile for nolibc tests
+include ../../../scripts/Makefile.include
+include ../../../scripts/utilities.mak
+# We need this for the "cc-option" macro.
+include ../../../build/Build.include
+
+ifneq ($(O),)
+ifneq ($(call is-absolute,$(O)),y)
+$(error Only absolute O= parameters are supported)
+endif
+endif
+
+# we're in ".../tools/testing/selftests/nolibc"
+ifeq ($(srctree),)
+srctree := $(patsubst %/tools/testing/selftests/,%,$(dir $(CURDIR)))
+endif
+
+ifeq ($(ARCH),)
+include $(srctree)/scripts/subarch.include
+ARCH = $(SUBARCH)
+endif
+
+objtree ?= $(srctree)
+
+# XARCH extends the kernel's ARCH with a few variants of the same
+# architecture that only differ by the configuration, the toolchain
+# and the Qemu program used. It is copied as-is into ARCH except for
+# a few specific values which are mapped like this:
+#
+# XARCH | ARCH | config
+# -------------|-----------|-------------------------
+# ppc | powerpc | 32 bits
+# ppc64 | powerpc | 64 bits big endian
+# ppc64le | powerpc | 64 bits little endian
+#
+# It is recommended to only use XARCH, though it does not harm if
+# ARCH is already set. For simplicity, ARCH is sufficient for all
+# architectures where both are equal.
+
+# configure default variants for target kernel supported architectures
+XARCH_powerpc = ppc
+XARCH_mips = mips32le
+XARCH = $(or $(XARCH_$(ARCH)),$(ARCH))
+
+# map from user input variants to their kernel supported architectures
+ARCH_ppc = powerpc
+ARCH_ppc64 = powerpc
+ARCH_ppc64le = powerpc
+ARCH_mips32le = mips
+ARCH_mips32be = mips
+ARCH := $(or $(ARCH_$(XARCH)),$(XARCH))
+
+# kernel image names by architecture
+IMAGE_i386 = arch/x86/boot/bzImage
+IMAGE_x86_64 = arch/x86/boot/bzImage
+IMAGE_x86 = arch/x86/boot/bzImage
+IMAGE_arm64 = arch/arm64/boot/Image
+IMAGE_arm = arch/arm/boot/zImage
+IMAGE_mips32le = vmlinuz
+IMAGE_mips32be = vmlinuz
+IMAGE_ppc = vmlinux
+IMAGE_ppc64 = vmlinux
+IMAGE_ppc64le = arch/powerpc/boot/zImage
+IMAGE_riscv = arch/riscv/boot/Image
+IMAGE_s390 = arch/s390/boot/bzImage
+IMAGE_loongarch = arch/loongarch/boot/vmlinuz.efi
+IMAGE = $(objtree)/$(IMAGE_$(XARCH))
+IMAGE_NAME = $(notdir $(IMAGE))
+
+# default kernel configurations that appear to be usable
+DEFCONFIG_i386 = defconfig
+DEFCONFIG_x86_64 = defconfig
+DEFCONFIG_x86 = defconfig
+DEFCONFIG_arm64 = defconfig
+DEFCONFIG_arm = multi_v7_defconfig
+DEFCONFIG_mips32le = malta_defconfig
+DEFCONFIG_mips32be = malta_defconfig
+DEFCONFIG_ppc = pmac32_defconfig
+DEFCONFIG_ppc64 = powernv_be_defconfig
+DEFCONFIG_ppc64le = powernv_defconfig
+DEFCONFIG_riscv = defconfig
+DEFCONFIG_s390 = defconfig
+DEFCONFIG_loongarch = defconfig
+DEFCONFIG = $(DEFCONFIG_$(XARCH))
+
+EXTRACONFIG_mips32be = -d CONFIG_CPU_LITTLE_ENDIAN -e CONFIG_CPU_BIG_ENDIAN
+EXTRACONFIG = $(EXTRACONFIG_$(XARCH))
+
+# optional tests to run (default = all)
+TEST =
+
+# QEMU_ARCH: arch names used by qemu
+QEMU_ARCH_i386 = i386
+QEMU_ARCH_x86_64 = x86_64
+QEMU_ARCH_x86 = x86_64
+QEMU_ARCH_arm64 = aarch64
+QEMU_ARCH_arm = arm
+QEMU_ARCH_mips32le = mipsel # works with malta_defconfig
+QEMU_ARCH_mips32be = mips
+QEMU_ARCH_ppc = ppc
+QEMU_ARCH_ppc64 = ppc64
+QEMU_ARCH_ppc64le = ppc64
+QEMU_ARCH_riscv = riscv64
+QEMU_ARCH_s390 = s390x
+QEMU_ARCH_loongarch = loongarch64
+QEMU_ARCH = $(QEMU_ARCH_$(XARCH))
+
+QEMU_ARCH_USER_ppc64le = ppc64le
+QEMU_ARCH_USER = $(or $(QEMU_ARCH_USER_$(XARCH)),$(QEMU_ARCH_$(XARCH)))
+
+QEMU_BIOS_DIR = /usr/share/edk2/
+QEMU_BIOS_loongarch = $(QEMU_BIOS_DIR)/loongarch64/OVMF_CODE.fd
+
+ifneq ($(QEMU_BIOS_$(XARCH)),)
+QEMU_ARGS_BIOS = -bios $(QEMU_BIOS_$(XARCH))
+endif
+
+# QEMU_ARGS : some arch-specific args to pass to qemu
+QEMU_ARGS_i386 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_x86_64 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_x86 = -M pc -append "console=ttyS0,9600 i8042.noaux panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_arm64 = -M virt -cpu cortex-a53 -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_arm = -M virt -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_mips32le = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_mips32be = -M malta -append "panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_ppc = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_ppc64 = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_ppc64le = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_s390 = -M s390-ccw-virtio -m 1G -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_loongarch = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS = $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_BIOS) $(QEMU_ARGS_EXTRA)
+
+# OUTPUT is only set when run from the main makefile, otherwise
+# it defaults to this nolibc directory.
+OUTPUT ?= $(CURDIR)/
+
+ifeq ($(V),1)
+Q=
+else
+Q=@
+endif
+
+CFLAGS_i386 = $(call cc-option,-m32)
+CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
+CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
+CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cc-option,-mabi=elfv2)
+CFLAGS_s390 = -m64
+CFLAGS_mips32le = -EL -mabi=32 -fPIC
+CFLAGS_mips32be = -EB -mabi=32
+CFLAGS_STACKPROTECTOR ?= $(call cc-option,-mstack-protector-guard=global $(call cc-option,-fstack-protector-all))
+CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra \
+ $(call cc-option,-fno-stack-protector) \
+ $(CFLAGS_$(XARCH)) $(CFLAGS_STACKPROTECTOR)
+LDFLAGS :=
+
+REPORT ?= awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$/{if (!f) printf("\n"); f++; print;} /\[SKIPPED\][\r]*$$/{s++} \
+ END{ printf("\n%3d test(s): %3d passed, %3d skipped, %3d failed => status: ", p+s+f, p, s, f); \
+ if (f) printf("failure\n"); else if (s) printf("warning\n"); else printf("success\n");; \
+ printf("\nSee all results in %s\n", ARGV[1]); }'
+
+help:
+ @echo "Supported targets under selftests/nolibc:"
+ @echo " all call the \"run\" target below"
+ @echo " help this help"
+ @echo " sysroot create the nolibc sysroot here (uses \$$ARCH)"
+ @echo " nolibc-test build the executable (uses \$$CC and \$$CROSS_COMPILE)"
+ @echo " libc-test build an executable using the compiler's default libc instead"
+ @echo " run-user runs the executable under QEMU (uses \$$XARCH, \$$TEST)"
+ @echo " initramfs.cpio prepare the initramfs archive with nolibc-test"
+ @echo " initramfs prepare the initramfs tree with nolibc-test"
+ @echo " defconfig create a fresh new default config (uses \$$XARCH)"
+ @echo " kernel (re)build the kernel (uses \$$XARCH)"
+ @echo " kernel-standalone (re)build the kernel with the initramfs (uses \$$XARCH)"
+ @echo " run runs the kernel in QEMU after building it (uses \$$XARCH, \$$TEST)"
+ @echo " rerun runs a previously prebuilt kernel in QEMU (uses \$$XARCH, \$$TEST)"
+ @echo " clean clean the sysroot, initramfs, build and output files"
+ @echo ""
+ @echo "The output file is \"run.out\". Test ranges may be passed using \$$TEST."
+ @echo ""
+ @echo "Currently using the following variables:"
+ @echo " ARCH = $(ARCH)"
+ @echo " XARCH = $(XARCH)"
+ @echo " CROSS_COMPILE = $(CROSS_COMPILE)"
+ @echo " CC = $(CC)"
+ @echo " OUTPUT = $(OUTPUT)"
+ @echo " TEST = $(TEST)"
+ @echo " QEMU_ARCH = $(if $(QEMU_ARCH),$(QEMU_ARCH),UNKNOWN_ARCH) [determined from \$$XARCH]"
+ @echo " IMAGE_NAME = $(if $(IMAGE_NAME),$(IMAGE_NAME),UNKNOWN_ARCH) [determined from \$$XARCH]"
+ @echo ""
+
+all: run
+
+sysroot: sysroot/$(ARCH)/include
+
+sysroot/$(ARCH)/include:
+ $(Q)rm -rf sysroot/$(ARCH) sysroot/sysroot
+ $(QUIET_MKDIR)mkdir -p sysroot
+ $(Q)$(MAKE) -C $(srctree) outputmakefile
+ $(Q)$(MAKE) -C $(srctree)/tools/include/nolibc ARCH=$(ARCH) OUTPUT=$(CURDIR)/sysroot/ headers_standalone
+ $(Q)mv sysroot/sysroot sysroot/$(ARCH)
+
+ifneq ($(NOLIBC_SYSROOT),0)
+nolibc-test: nolibc-test.c nolibc-test-linkage.c sysroot/$(ARCH)/include
+ $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
+ -nostdlib -nostdinc -static -Isysroot/$(ARCH)/include nolibc-test.c nolibc-test-linkage.c -lgcc
+else
+nolibc-test: nolibc-test.c nolibc-test-linkage.c
+ $(QUIET_CC)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ \
+ -nostdlib -static -include $(srctree)/tools/include/nolibc/nolibc.h nolibc-test.c nolibc-test-linkage.c -lgcc
+endif
+
+libc-test: nolibc-test.c nolibc-test-linkage.c
+ $(QUIET_CC)$(HOSTCC) -o $@ nolibc-test.c nolibc-test-linkage.c
+
+# local libc-test
+run-libc-test: libc-test
+ $(Q)./libc-test > "$(CURDIR)/run.out" || :
+ $(Q)$(REPORT) $(CURDIR)/run.out
+
+# local nolibc-test
+run-nolibc-test: nolibc-test
+ $(Q)./nolibc-test > "$(CURDIR)/run.out" || :
+ $(Q)$(REPORT) $(CURDIR)/run.out
+
+# qemu user-land test
+run-user: nolibc-test
+ $(Q)qemu-$(QEMU_ARCH_USER) ./nolibc-test > "$(CURDIR)/run.out" || :
+ $(Q)$(REPORT) $(CURDIR)/run.out
+
+initramfs.cpio: kernel nolibc-test
+ $(QUIET_GEN)echo 'file /init nolibc-test 755 0 0' | $(objtree)/usr/gen_init_cpio - > initramfs.cpio
+
+initramfs: nolibc-test
+ $(QUIET_MKDIR)mkdir -p initramfs
+ $(call QUIET_INSTALL, initramfs/init)
+ $(Q)cp nolibc-test initramfs/init
+
+defconfig:
+ $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) mrproper $(DEFCONFIG) prepare
+ $(Q)if [ -n "$(EXTRACONFIG)" ]; then \
+ $(srctree)/scripts/config --file $(objtree)/.config $(EXTRACONFIG); \
+ $(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) olddefconfig < /dev/null; \
+ fi
+
+kernel:
+ $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) < /dev/null
+
+kernel-standalone: initramfs
+ $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs < /dev/null
+
+# run the tests after building the kernel
+run: kernel initramfs.cpio
+ $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
+ $(Q)$(REPORT) $(CURDIR)/run.out
+
+# re-run the tests from an existing kernel
+rerun:
+ $(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(IMAGE)" -initrd initramfs.cpio -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
+ $(Q)$(REPORT) $(CURDIR)/run.out
+
+# report with existing test log
+report:
+ $(Q)$(REPORT) $(CURDIR)/run.out
+
+clean:
+ $(call QUIET_CLEAN, sysroot)
+ $(Q)rm -rf sysroot
+ $(call QUIET_CLEAN, nolibc-test)
+ $(Q)rm -f nolibc-test
+ $(call QUIET_CLEAN, libc-test)
+ $(Q)rm -f libc-test
+ $(call QUIET_CLEAN, initramfs.cpio)
+ $(Q)rm -rf initramfs.cpio
+ $(call QUIET_CLEAN, initramfs)
+ $(Q)rm -rf initramfs
+ $(call QUIET_CLEAN, run.out)
+ $(Q)rm -rf run.out
+
+.PHONY: sysroot/$(ARCH)/include
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.