vendor/NetBSD/tests/2026.02.14_2vendor/NetBSD/tests

5 files changed, 268 insertions, 0 deletions

diff --git a/kernel/arch/riscv/contextspfunc.S b/kernel/arch/riscv/contextspfunc.S
new file mode 100644
index 000000000000..7f405123deb3
--- /dev/null
+++ b/kernel/arch/riscv/contextspfunc.S
@@ -0,0 +1,45 @@
+/*	$NetBSD: contextspfunc.S,v 1.1 2025/04/21 02:33:44 riastradh Exp $	*/
+
+/*-
+ * Copyright (c) 2025 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define	_LOCORE
+
+#include <machine/asm.h>
+
+RCSID("$NetBSD: contextspfunc.S,v 1.1 2025/04/21 02:33:44 riastradh Exp $")
+
+/*
+ * contextspfunc()
+ *
+ *	makecontext(3) function.  Store the stack pointer on entry at
+ *	the global variable contextsp and call contextdone.
+ */
+ENTRY(contextspfunc)
+	PTR_LA	t0, _C_LABEL(contextsp)	/* t0 := &contextsp */
+	PTR_S	sp, 0(t0)		/* contextsp := sp */
+	tail	_C_LABEL(contextdone)	/* tail call contextdone */
+END(contextspfunc)
diff --git a/kernel/arch/riscv/execsp.S b/kernel/arch/riscv/execsp.S
new file mode 100644
index 000000000000..d045cbf0d3af
--- /dev/null
+++ b/kernel/arch/riscv/execsp.S
@@ -0,0 +1,100 @@
+/*	$NetBSD: execsp.S,v 1.1 2025/04/20 22:34:07 riastradh Exp $	*/
+
+/*-
+ * Copyright (c) 2025 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define	_LOCORE
+
+#include <machine/asm.h>
+
+RCSID("$NetBSD: execsp.S,v 1.1 2025/04/20 22:34:07 riastradh Exp $")
+
+/*
+ * void execsp_start(void (*cleanup@a0)(void),
+ *     struct ps_strings *ps_strings@a1)
+ *
+ *	ELF entry point.  Saves the stack pointer in startsp and defers
+ *	to the usual csu __start routine.
+ */
+ENTRY(execsp_start)
+	.option push
+	.option norelax		/* Don't optimize this into `mv gp, gp'! */
+	lla	gp, __global_pointer$
+	.option pop
+
+	PTR_LA	t0, _C_LABEL(startsp)	/* t0 := &startsp */
+	PTR_S	sp, 0(t0)		/* startsp := sp */
+	tail	_C_LABEL(__start)	/* tail call __start */
+END(execsp_start)
+
+/*
+ * void execsp_ctor(void)
+ *
+ *	ELF constructor.  Saves the stack pointer in ctorsp and
+ *	returns.
+ */
+ENTRY(execsp_ctor)
+	PTR_LA	t0, _C_LABEL(ctorsp)	/* t0 := &ctorsp */
+	PTR_S	sp, 0(t0)		/* ctorsp := sp */
+	ret
+END(execsp_ctor)
+
+	/* Make execsp_ctor a constructor. */
+	.section .init_array,"aw"
+	.p2align PTR_SCALESHIFT
+	PTR_WORD	_C_LABEL(execsp_ctor)
+
+/*
+ * int main(int argc@a0, char **argv@a1, ...)
+ *
+ *	Main function.  Saves the stack pointer in mainsp and returns
+ *	zero.  We will call execsp_main in execsp_dtor once dtorsp has
+ *	been initialized.
+ */
+ENTRY(main)
+	PTR_LA	t0, _C_LABEL(mainsp)	/* t0 := &mainsp */
+	PTR_S	sp, 0(t0)		/* mainsp := sp */
+	li	a0, 0			/* return 0 */
+	ret
+END(main)
+
+/*
+ * void execsp_dtor(void)
+ *
+ *	ELF destructor.  Saves the stack pointer in dtorsp and defers
+ *	to the C execsp_main in h_execsp.c to report the stack pointers
+ *	back to the t_signal_and_sp parent.
+ */
+ENTRY(execsp_dtor)
+	PTR_LA	t0, _C_LABEL(dtorsp)	/* t0 := &dtorsp */
+	PTR_S	sp, 0(t0)		/* dtorsp := sp */
+	tail	_C_LABEL(execsp_main)	/* tail call execsp_main */
+END(execsp_dtor)
+
+	/* Make execsp_ctor a destructor. */
+	.section .fini_array,"aw"
+	.p2align PTR_SCALESHIFT
+	PTR_WORD	_C_LABEL(execsp_dtor)
diff --git a/kernel/arch/riscv/signalsphandler.S b/kernel/arch/riscv/signalsphandler.S
new file mode 100644
index 000000000000..6a5d2f752ee2
--- /dev/null
+++ b/kernel/arch/riscv/signalsphandler.S
@@ -0,0 +1,45 @@
+/*	$NetBSD: signalsphandler.S,v 1.1 2025/04/20 22:34:07 riastradh Exp $	*/
+
+/*-
+ * Copyright (c) 2025 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define	_LOCORE
+
+#include <machine/asm.h>
+
+RCSID("$NetBSD: signalsphandler.S,v 1.1 2025/04/20 22:34:07 riastradh Exp $")
+
+/*
+ * signalsphandler(signo@a0)
+ *
+ *	Signal handler.  Store the stack pointer on entry at the global
+ *	variable signalsp and return.
+ */
+ENTRY(signalsphandler)
+	PTR_LA	t0, _C_LABEL(signalsp)	/* t0 := &signalsp */
+	PTR_S	sp, 0(t0)		/* signalsp := sp */
+	ret
+END(signalsphandler)
diff --git a/kernel/arch/riscv/stack_pointer.h b/kernel/arch/riscv/stack_pointer.h
new file mode 100644
index 000000000000..22c246e4a86a
--- /dev/null
+++ b/kernel/arch/riscv/stack_pointer.h
@@ -0,0 +1,35 @@
+/*	$NetBSD: stack_pointer.h,v 1.1 2025/04/20 22:34:07 riastradh Exp $	*/
+
+/*-
+ * Copyright (c) 2025 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef	TESTS_KERNEL_ARCH_RISCV_STACK_POINTER_H
+#define	TESTS_KERNEL_ARCH_RISCV_STACK_POINTER_H
+
+#define MISALIGN_SP	__asm __volatile("addi sp,sp,-1" ::: "memory")
+#define FIX_SP		__asm __volatile("addi sp,sp,1" ::: "memory")
+
+#endif	/* TESTS_KERNEL_ARCH_RISCV_STACK_POINTER_H */
diff --git a/kernel/arch/riscv/threadspfunc.S b/kernel/arch/riscv/threadspfunc.S
new file mode 100644
index 000000000000..30291ad2eb73
--- /dev/null
+++ b/kernel/arch/riscv/threadspfunc.S
@@ -0,0 +1,43 @@
+/*	$NetBSD: threadspfunc.S,v 1.1 2025/04/21 02:33:44 riastradh Exp $	*/
+
+/*-
+ * Copyright (c) 2025 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define	_LOCORE
+
+#include <machine/asm.h>
+
+RCSID("$NetBSD: threadspfunc.S,v 1.1 2025/04/21 02:33:44 riastradh Exp $")
+
+/*
+ * void *threadspfunc(void *cookie@o0)
+ *
+ *	pthread_create(3) function.  Return the stack pointer on entry.
+ */
+ENTRY(threadspfunc)
+	mv	a0, sp			/* return sp */
+	ret				/* return to caller */
+END(threadspfunc)