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Index: sys/arm64/include/xen/hypercall.h
===================================================================
--- /dev/null
+++ sys/arm64/include/xen/hypercall.h
@@ -0,0 +1,78 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2014 Julien Grall
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef __MACHINE_ARM64_XEN_HYPERCALL_H__
+#define __MACHINE_ARM64_XEN_HYPERCALL_H__
+
+#define CONFIG_XEN_COMPAT 0x030003
+
+#include <xen/interface/xen.h>
+#include <xen/interface/sched.h>
+
+int
+HYPERVISOR_console_io(int cmd, unsigned int count, const char *str);
+
+int
+HYPERVISOR_physdev_op(int cmd, void *arg);
+
+int
+HYPERVISOR_sched_op(int cmd, void *arg);
+
+int
+HYPERVISOR_xen_version(int cmd, void *arg);
+
+int
+HYPERVISOR_grant_table_op(int cmd, void *uop, unsigned int count);
+
+int
+HYPERVISOR_memory_op(unsigned int cmd, void *arg);
+
+int
+HYPERVISOR_event_channel_op(unsigned int cmd, void *arg);
+
+int
+HYPERVISOR_multicall(multicall_entry_t *call_list, unsigned int nr_calls);
+
+int
+HYPERVISOR_vcpu_op(int cmd, unsigned int vcpuid, void *extra_args);
+
+unsigned long
+HYPERVISOR_hvm_op(int op, void *arg);
+
+int
+HYPERVISOR_dm_op(domid_t domid, unsigned int nr_bufs,
+struct xen_dm_op_buf *bufs);
+
+int
+HYPERVISOR_platform_op(struct xen_platform_op *platform_op);
+
+int
+privcmd_hypercall(long op, long a1, long a2, long a3, long a4, long a5);
+
+#endif /* __MACHINE_ARM64_XEN_HYPERCALL_H__ */
Index: sys/arm64/xen/hypercall.S
===================================================================
--- /dev/null
+++ sys/arm64/xen/hypercall.S
@@ -0,0 +1,95 @@
+/******************************************************************************
+ * hypercall.S
+ *
+ * Xen hypercall wrappers
+ *
+ * Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/*
+ * The Xen hypercall calling convention is very similar to the procedure
+ * call standard for the ARM 64-bit architecture: the first parameter is
+ * passed in x0, the second in x1, the third in x2, the fourth in x3 and
+ * the fifth in x4.
+ *
+ * The hypercall number is passed in x16.
+ *
+ * The return value is in x0.
+ *
+ * The hvc ISS is required to be 0xEA1, that is the Xen specific ARM
+ * hypercall tag.
+ *
+ * Parameter structs passed to hypercalls are laid out according to
+ * the ARM 64-bit EABI standard.
+ */
+
+#include <machine/asm.h>
+#include <xen/xen-os.h>
+__FBSDID("$FreeBSD$");
+
+#define XEN_IMM 0xEA1
+
+#define HYPERCALL_SIMPLE(hypercall) \
+ENTRY(HYPERVISOR_##hypercall); \
+ mov x16, #__HYPERVISOR_##hypercall; \
+ hvc XEN_IMM; \
+ ret; \
+END(HYPERVISOR_##hypercall)
+
+#define HYPERCALL0 HYPERCALL_SIMPLE
+#define HYPERCALL1 HYPERCALL_SIMPLE
+#define HYPERCALL2 HYPERCALL_SIMPLE
+#define HYPERCALL3 HYPERCALL_SIMPLE
+#define HYPERCALL4 HYPERCALL_SIMPLE
+#define HYPERCALL5 HYPERCALL_SIMPLE
+
+ .text
+
+HYPERCALL2(xen_version);
+HYPERCALL3(console_io);
+HYPERCALL3(grant_table_op);
+HYPERCALL2(sched_op);
+HYPERCALL2(event_channel_op);
+HYPERCALL2(hvm_op);
+HYPERCALL2(memory_op);
+HYPERCALL2(physdev_op);
+HYPERCALL3(vcpu_op);
+HYPERCALL1(tmem_op);
+HYPERCALL1(platform_op);
+HYPERCALL2(multicall);
+HYPERCALL3(dm_op);
+
+ENTRY(privcmd_hypercall)
+ mov x16, x0
+ mov x0, x1
+ mov x1, x2
+ mov x2, x3
+ mov x3, x4
+ mov x4, x5
+ hvc XEN_IMM
+ ret
+END(privcmd_call);
Index: sys/conf/files.arm64
===================================================================
--- sys/conf/files.arm64
+++ sys/conf/files.arm64
@@ -587,3 +587,6 @@
compile-with "${OBJCOPY} --input-target binary --output-target elf64-littleaarch64 --binary-architecture aarch64 cloudabi64_vdso.o ${.TARGET}" \
no-implicit-rule \
clean "cloudabi64_vdso_blob.o"
+
+# Xen
+arm64/xen/hypercall.S optional xenhvm

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