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-rw-r--r--tools/include/nolibc/arch-m68k.h141
-rw-r--r--tools/include/nolibc/arch.h2
-rw-r--r--tools/testing/selftests/nolibc/Makefile5
-rwxr-xr-xtools/testing/selftests/nolibc/run-tests.sh5
4 files changed, 153 insertions, 0 deletions
diff --git a/tools/include/nolibc/arch-m68k.h b/tools/include/nolibc/arch-m68k.h
new file mode 100644
index 000000000000..6dac1845f298
--- /dev/null
+++ b/tools/include/nolibc/arch-m68k.h
@@ -0,0 +1,141 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * m68k specific definitions for NOLIBC
+ * Copyright (C) 2025 Daniel Palmer<daniel@thingy.jp>
+ *
+ * Roughly based on one or more of the other arch files.
+ *
+ */
+
+#ifndef _NOLIBC_ARCH_M68K_H
+#define _NOLIBC_ARCH_M68K_H
+
+#include "compiler.h"
+#include "crt.h"
+
+#define _NOLIBC_SYSCALL_CLOBBERLIST "memory"
+
+#define my_syscall0(num) \
+({ \
+ register long _num __asm__ ("d0") = (num); \
+ \
+ __asm__ volatile ( \
+ "trap #0\n" \
+ : "+r"(_num) \
+ : "r"(_num) \
+ : _NOLIBC_SYSCALL_CLOBBERLIST \
+ ); \
+ _num; \
+})
+
+#define my_syscall1(num, arg1) \
+({ \
+ register long _num __asm__ ("d0") = (num); \
+ register long _arg1 __asm__ ("d1") = (long)(arg1); \
+ \
+ __asm__ volatile ( \
+ "trap #0\n" \
+ : "+r"(_num) \
+ : "r"(_arg1) \
+ : _NOLIBC_SYSCALL_CLOBBERLIST \
+ ); \
+ _num; \
+})
+
+#define my_syscall2(num, arg1, arg2) \
+({ \
+ register long _num __asm__ ("d0") = (num); \
+ register long _arg1 __asm__ ("d1") = (long)(arg1); \
+ register long _arg2 __asm__ ("d2") = (long)(arg2); \
+ \
+ __asm__ volatile ( \
+ "trap #0\n" \
+ : "+r"(_num) \
+ : "r"(_arg1), "r"(_arg2) \
+ : _NOLIBC_SYSCALL_CLOBBERLIST \
+ ); \
+ _num; \
+})
+
+#define my_syscall3(num, arg1, arg2, arg3) \
+({ \
+ register long _num __asm__ ("d0") = (num); \
+ register long _arg1 __asm__ ("d1") = (long)(arg1); \
+ register long _arg2 __asm__ ("d2") = (long)(arg2); \
+ register long _arg3 __asm__ ("d3") = (long)(arg3); \
+ \
+ __asm__ volatile ( \
+ "trap #0\n" \
+ : "+r"(_num) \
+ : "r"(_arg1), "r"(_arg2), "r"(_arg3) \
+ : _NOLIBC_SYSCALL_CLOBBERLIST \
+ ); \
+ _num; \
+})
+
+#define my_syscall4(num, arg1, arg2, arg3, arg4) \
+({ \
+ register long _num __asm__ ("d0") = (num); \
+ register long _arg1 __asm__ ("d1") = (long)(arg1); \
+ register long _arg2 __asm__ ("d2") = (long)(arg2); \
+ register long _arg3 __asm__ ("d3") = (long)(arg3); \
+ register long _arg4 __asm__ ("d4") = (long)(arg4); \
+ \
+ __asm__ volatile ( \
+ "trap #0\n" \
+ : "+r" (_num) \
+ : "r"(_arg1), "r"(_arg2), "r"(_arg3), "r"(_arg4) \
+ : _NOLIBC_SYSCALL_CLOBBERLIST \
+ ); \
+ _num; \
+})
+
+#define my_syscall5(num, arg1, arg2, arg3, arg4, arg5) \
+({ \
+ register long _num __asm__ ("d0") = (num); \
+ register long _arg1 __asm__ ("d1") = (long)(arg1); \
+ register long _arg2 __asm__ ("d2") = (long)(arg2); \
+ register long _arg3 __asm__ ("d3") = (long)(arg3); \
+ register long _arg4 __asm__ ("d4") = (long)(arg4); \
+ register long _arg5 __asm__ ("d5") = (long)(arg5); \
+ \
+ __asm__ volatile ( \
+ "trap #0\n" \
+ : "+r" (_num) \
+ : "r"(_arg1), "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5) \
+ : _NOLIBC_SYSCALL_CLOBBERLIST \
+ ); \
+ _num; \
+})
+
+#define my_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6) \
+({ \
+ register long _num __asm__ ("d0") = (num); \
+ register long _arg1 __asm__ ("d1") = (long)(arg1); \
+ register long _arg2 __asm__ ("d2") = (long)(arg2); \
+ register long _arg3 __asm__ ("d3") = (long)(arg3); \
+ register long _arg4 __asm__ ("d4") = (long)(arg4); \
+ register long _arg5 __asm__ ("d5") = (long)(arg5); \
+ register long _arg6 __asm__ ("a0") = (long)(arg6); \
+ \
+ __asm__ volatile ( \
+ "trap #0\n" \
+ : "+r" (_num) \
+ : "r"(_arg1), "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5), \
+ "r"(_arg6) \
+ : _NOLIBC_SYSCALL_CLOBBERLIST \
+ ); \
+ _num; \
+})
+
+void _start(void);
+void __attribute__((weak, noreturn)) __nolibc_entrypoint __no_stack_protector _start(void)
+{
+ __asm__ volatile (
+ "movel %sp, %sp@-\n"
+ "jsr _start_c\n"
+ );
+ __nolibc_entrypoint_epilogue();
+}
+
+#endif /* _NOLIBC_ARCH_M68K_H */
diff --git a/tools/include/nolibc/arch.h b/tools/include/nolibc/arch.h
index b8c1da9a88d1..d20b2304aac2 100644
--- a/tools/include/nolibc/arch.h
+++ b/tools/include/nolibc/arch.h
@@ -35,6 +35,8 @@
#include "arch-loongarch.h"
#elif defined(__sparc__)
#include "arch-sparc.h"
+#elif defined(__m68k__)
+#include "arch-m68k.h"
#else
#error Unsupported Architecture
#endif
diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
index d17750761d9f..2671383045db 100644
--- a/tools/testing/selftests/nolibc/Makefile
+++ b/tools/testing/selftests/nolibc/Makefile
@@ -80,6 +80,7 @@ IMAGE_s390 = arch/s390/boot/bzImage
IMAGE_loongarch = arch/loongarch/boot/vmlinuz.efi
IMAGE_sparc32 = arch/sparc/boot/image
IMAGE_sparc64 = arch/sparc/boot/image
+IMAGE_m68k = vmlinux
IMAGE = $(objtree)/$(IMAGE_$(XARCH))
IMAGE_NAME = $(notdir $(IMAGE))
@@ -103,8 +104,10 @@ DEFCONFIG_s390 = defconfig compat.config
DEFCONFIG_loongarch = defconfig
DEFCONFIG_sparc32 = sparc32_defconfig
DEFCONFIG_sparc64 = sparc64_defconfig
+DEFCONFIG_m68k = virt_defconfig
DEFCONFIG = $(DEFCONFIG_$(XARCH))
+EXTRACONFIG_m68k = -e CONFIG_BLK_DEV_INITRD
EXTRACONFIG = $(EXTRACONFIG_$(XARCH))
# optional tests to run (default = all)
@@ -130,6 +133,7 @@ QEMU_ARCH_s390 = s390x
QEMU_ARCH_loongarch = loongarch64
QEMU_ARCH_sparc32 = sparc
QEMU_ARCH_sparc64 = sparc64
+QEMU_ARCH_m68k = m68k
QEMU_ARCH = $(QEMU_ARCH_$(XARCH))
QEMU_ARCH_USER_ppc64le = ppc64le
@@ -162,6 +166,7 @@ QEMU_ARGS_s390 = -M s390-ccw-virtio -append "console=ttyS0 panic=-1 $(TEST
QEMU_ARGS_loongarch = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_sparc32 = -M SS-5 -m 256M -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS_sparc64 = -M sun4u -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
+QEMU_ARGS_m68k = -M virt -append "console=ttyGF0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)"
QEMU_ARGS = -m 1G $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_BIOS) $(QEMU_ARGS_EXTRA)
# OUTPUT is only set when run from the main makefile, otherwise
diff --git a/tools/testing/selftests/nolibc/run-tests.sh b/tools/testing/selftests/nolibc/run-tests.sh
index 040956a9f5b8..8277599e6441 100755
--- a/tools/testing/selftests/nolibc/run-tests.sh
+++ b/tools/testing/selftests/nolibc/run-tests.sh
@@ -26,6 +26,7 @@ all_archs=(
s390x s390
loongarch
sparc32 sparc64
+ m68k
)
archs="${all_archs[@]}"
@@ -186,6 +187,10 @@ test_arch() {
echo "Unsupported configuration"
return
fi
+ if [ "$arch" = "m68k" ] && [ "$llvm" = "1" ]; then
+ echo "Unsupported configuration"
+ return
+ fi
mkdir -p "$build_dir"
swallow_output "${MAKE[@]}" defconfig
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.