Reorganise sources to make it possible to include Xen PVHVM support in
native kernels. Among others:
- move xen/include/amd64/hypercall.h to amd64/include/xen and
  xen/include/i386/hypercall.h to i386/include/xen
- exclude some native files from the build for xenpv
- add xen to "machine" config statement for amd64 and i386
- split arch/xen/conf/files.xen to arch/xen/conf/files.xen (for pv drivers)
  and arch/xen/conf/files.xen.pv (for full pv support)
- add GENERIC_XENHVM kernel config which includes GENERIC and add Xen PV
  drivers.


(bouyer)

# $NetBSD: GENERIC_XENHVM,v 1.1.2.1 2020/04/16 08:46:34 bouyer Exp $

include "arch/amd64/conf/GENERIC"

options 	XENPVHVM
options 	XEN
no options 	SVS		# Separate Virtual Space
options 	MAXPHYS=32768	#xbd doesn't handle 64k transfers
hypervisor*	at mainbus?		# Xen hypervisor
#vcpu*		at hypervisor?		# Xen virtual CPUs
xenbus*	 	at hypervisor?		# Xen virtual bus
xencons*	at hypervisor?		# Xen virtual console
xennet*	 	at xenbus?		# Xen virtual network interface
xbd*		at xenbus?		# Xen virtual block device

/* $NetBSD: hypercalls.h,v 1.1.2.1 2020/04/16 08:46:34 bouyer Exp $ */
/******************************************************************************
 * hypercall.h
 * 
 * Linux-specific hypervisor handling.
 * 
 * Copyright (c) 2002-2004, K A Fraser
 * 
 * 64-bit updates:
 *   Benjamin Liu <benjamin.liu@intel.com>
 *   Jun Nakajima <jun.nakajima@intel.com>
 * 
 * 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.
 */

#ifndef __HYPERCALL_H__
#define __HYPERCALL_H__

#define __STR(x) #x
#define STR(x) __STR(x)

#define HYPERCALL_STR(name)					\
	"call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"

#define _hypercall0(type, name)			\
({						\
	long __res;				\
	asm volatile (				\
		HYPERCALL_STR(name)		\
		: "=a" (__res)			\
		:				\
		: "memory" );			\
	(type)__res;				\
})

#define _hypercall1(type, name, a1)				\
({								\
	long __res, __ign1;					\
	asm volatile (						\
		HYPERCALL_STR(name)				\
		: "=a" (__res), "=D" (__ign1)			\
		: "1" ((long)(a1))				\
		: "memory" );					\
	(type)__res;						\
})

#define _hypercall2(type, name, a1, a2)				\
({								\
	long __res, __ign1, __ign2;				\
	asm volatile (						\
		HYPERCALL_STR(name)				\
		: "=a" (__res), "=D" (__ign1), "=S" (__ign2)	\
		: "1" ((long)(a1)), "2" ((long)(a2))		\
		: "memory" );					\
	(type)__res;						\
})

#define _hypercall3(type, name, a1, a2, a3)			\
({								\
	long __res, __ign1, __ign2, __ign3;			\
	asm volatile (						\
		HYPERCALL_STR(name)				\
		: "=a" (__res), "=D" (__ign1), "=S" (__ign2), 	\
		"=d" (__ign3)					\
		: "1" ((long)(a1)), "2" ((long)(a2)),		\
		"3" ((long)(a3))				\
		: "memory" );					\
	(type)__res;						\
})

#define _hypercall4(type, name, a1, a2, a3, a4)			\
({								\
	long __res, __ign1, __ign2, __ign3;			\
	asm volatile (						\
		"movq %7,%%r10; "				\
		HYPERCALL_STR(name)				\
		: "=a" (__res), "=D" (__ign1), "=S" (__ign2),	\
		"=d" (__ign3)					\
		: "1" ((long)(a1)), "2" ((long)(a2)),		\
		"3" ((long)(a3)), "g" ((long)(a4))		\
		: "memory", "r10" );				\
	(type)__res;						\
})

#define _hypercall5(type, name, a1, a2, a3, a4, a5)		\
({								\
	long __res, __ign1, __ign2, __ign3;			\
	asm volatile (						\
		"movq %7,%%r10; movq %8,%%r8; "			\
		HYPERCALL_STR(name)				\
		: "=a" (__res), "=D" (__ign1), "=S" (__ign2),	\
		"=d" (__ign3)					\
		: "1" ((long)(a1)), "2" ((long)(a2)),		\
		"3" ((long)(a3)), "g" ((long)(a4)),		\
		"g" ((long)(a5))				\
		: "memory", "r10", "r8" );			\
	(type)__res;						\
})

static inline int
HYPERVISOR_set_trap_table(
	trap_info_t *table)
{
	return _hypercall1(int, set_trap_table, table);
}

static inline int
HYPERVISOR_mmu_update(
	mmu_update_t *req, int count, int *success_count, domid_t domid)
{
	return _hypercall4(int, mmu_update, req, count, success_count, domid);
}

static inline int
HYPERVISOR_mmuext_op(
	struct mmuext_op *op, int count, int *success_count, domid_t domid)
{
	return _hypercall4(int, mmuext_op, op, count, success_count, domid);
}

static inline int
HYPERVISOR_set_gdt(
	unsigned long *frame_list, int entries)
{
	return _hypercall2(int, set_gdt, frame_list, entries);
}

static inline int
HYPERVISOR_stack_switch(
	unsigned long ss, unsigned long esp)
{
	return _hypercall2(int, stack_switch, ss, esp);
}

static inline int
HYPERVISOR_set_callbacks(
	unsigned long event_address, unsigned long failsafe_address, 
	unsigned long syscall_address)
{
	return _hypercall3(int, set_callbacks,
			   event_address, failsafe_address, syscall_address);
}

static inline int
HYPERVISOR_fpu_taskswitch(
	int set)
{
	return _hypercall1(int, fpu_taskswitch, set);
}

static inline int
HYPERVISOR_sched_op_compat(
	int cmd, unsigned long arg)
{
	return _hypercall2(int, sched_op_compat, cmd, arg);
}

static inline int
HYPERVISOR_sched_op(
	int cmd, void *arg)
{
	return _hypercall2(int, sched_op, cmd, arg);
}

static inline long
HYPERVISOR_set_timer_op(
	u64 timeout)
{
	return _hypercall1(long, set_timer_op, timeout);
}

static inline int
HYPERVISOR_platform_op(
	struct xen_platform_op *platform_op)
{
	platform_op->interface_version = XENPF_INTERFACE_VERSION;
	return _hypercall1(int, platform_op, platform_op);
}

static inline int
HYPERVISOR_set_debugreg(
	int reg, unsigned long value)
{
	return _hypercall2(int, set_debugreg, reg, value);
}

static inline unsigned long
HYPERVISOR_get_debugreg(
	int reg)
{
	return _hypercall1(unsigned long, get_debugreg, reg);
}

static inline int
HYPERVISOR_update_descriptor(
	unsigned long ma, unsigned long word)
{
	return _hypercall2(int, update_descriptor, ma, word);
}

static inline int
HYPERVISOR_memory_op(
	unsigned int cmd, void *arg)
{
	return _hypercall2(int, memory_op, cmd, arg);
}

static inline int
HYPERVISOR_multicall(
	multicall_entry_t *call_list, int nr_calls)
{
	return _hypercall2(int, multicall, call_list, nr_calls);
}

static inline int
HYPERVISOR_update_va_mapping(
	unsigned long va, unsigned long new_val, unsigned long flags)
{
	return _hypercall3(int, update_va_mapping, va, new_val, flags);
}

static inline int
HYPERVISOR_event_channel_op(evtchn_op_t *op)
{
	KASSERT(op != NULL);
#if __XEN_INTERFACE_VERSION__ < 0x00030202
	return _hypercall1(int, event_channel_op, op);
#else
	return _hypercall2(int, event_channel_op, op->cmd, &op->u);
#endif
}

static inline int
HYPERVISOR_acm_op(
	int cmd, void *arg)
{
	return _hypercall2(int, acm_op, cmd, arg);
}

static inline int
HYPERVISOR_xen_version(
	int cmd, void *arg)
{
	return _hypercall2(int, xen_version, cmd, arg);
}

static inline int
HYPERVISOR_console_io(
	int cmd, int count, char *str)
{
	return _hypercall3(int, console_io, cmd, count, str);
}

static inline int
HYPERVISOR_physdev_op(void *op)
{
	return _hypercall1(int, physdev_op_compat, op);
}

static inline int
HYPERVISOR_grant_table_op(
	unsigned int cmd, void *uop, unsigned int count)
{
	return _hypercall3(int, grant_table_op, cmd, uop, count);
}

static inline int
HYPERVISOR_update_va_mapping_otherdomain(
	unsigned long va, unsigned long new_val, unsigned long flags,
	domid_t domid)
{
	return _hypercall4(int, update_va_mapping_otherdomain, va,
			   new_val, flags, domid);
}

static inline int
HYPERVISOR_vm_assist(
	unsigned int cmd, unsigned int type)
{
	return _hypercall2(int, vm_assist, cmd, type);
}

static inline int
HYPERVISOR_vcpu_op(
	int cmd, int vcpuid, void *extra_args)
{
	return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
}

static inline int
HYPERVISOR_set_segment_base(
	int reg, unsigned long value)
{
	return _hypercall2(int, set_segment_base, reg, value);
}

static inline int
HYPERVISOR_suspend(
	unsigned long srec)
{
#if __XEN_INTERFACE_VERSION__ >= 0x00030201

	struct sched_shutdown shutdown_reason = {
		.reason = SHUTDOWN_suspend,
	};

	return _hypercall3(int, sched_op, SCHEDOP_shutdown,
	    &shutdown_reason, srec);
#else
	return _hypercall3(int, sched_op, SCHEDOP_shutdown,
				 SHUTDOWN_suspend, srec);
#endif
}

static inline long
HYPERVISOR_yield(
	void)
{
	return _hypercall2(int, sched_op, SCHEDOP_yield, 0);
}

static inline long
HYPERVISOR_block(
	void)
{
	return _hypercall2(int, sched_op, SCHEDOP_block, 0);
}

static inline long
HYPERVISOR_shutdown(
	void)
{
#if __XEN_INTERFACE_VERSION__ >= 0x00030201

	struct sched_shutdown shutdown_reason = {
		.reason = SHUTDOWN_poweroff,
	};

	return _hypercall2(int, sched_op, SCHEDOP_shutdown,
	    &shutdown_reason);
#else
-	return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_poweroff);
#endif
}

static inline long
HYPERVISOR_crash(
	void)
{
#if __XEN_INTERFACE_VERSION__ >= 0x00030201

	struct sched_shutdown shutdown_reason = {
		.reason = SHUTDOWN_crash,
	};

	return _hypercall2(int, sched_op, SCHEDOP_shutdown,
	    &shutdown_reason);
#else
	return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_crash);
#endif
}

static inline long
HYPERVISOR_reboot(
	void)
{
#if __XEN_INTERFACE_VERSION__ >= 0x00030201

	struct sched_shutdown shutdown_reason = {
		.reason = SHUTDOWN_reboot,
	};

	return _hypercall2(int, sched_op, SCHEDOP_shutdown,
	    &shutdown_reason);
#else
	return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_reboot);
#endif
}

static inline int
HYPERVISOR_nmi_op(
	unsigned long op, void *arg)
{
	return _hypercall2(int, nmi_op, op, arg);
}

static inline long
HYPERVISOR_hvm_op(
    int op, void *arg)
{
    return _hypercall2(long, hvm_op, op, arg);
}

static inline int
HYPERVISOR_callback_op(
	int cmd, void *arg)
{
	return _hypercall2(int, callback_op, cmd, arg);
}

static inline int
HYPERVISOR_xenoprof_op(
	int op, void *arg)
{
	return _hypercall2(int, xenoprof_op, op, arg);
}

static inline int
HYPERVISOR_kexec_op(
	unsigned long op, void *args)
{
	return _hypercall2(int, kexec_op, op, args);
}

#if __XEN_INTERFACE_VERSION__ < 0x00030204
static inline int
HYPERVISOR_dom0_op(
	dom0_op_t *dom0_op)
{
	dom0_op->interface_version = DOM0_INTERFACE_VERSION;
	return _hypercall1(int, dom0_op, dom0_op);
}
#endif	/* __XEN_INTERFACE_VERSION__ */

#include <xen/include/public/arch-x86/xen-mca.h>

static inline int
HYPERVISOR_machine_check(struct xen_mc *mc)
{
	mc->interface_version = XEN_MCA_INTERFACE_VERSION;
	return _hypercall1(int, mca, mc);
}

static inline int
HYPERVISOR_sysctl(void *sysctl)
{
	return _hypercall1(int, sysctl, sysctl);
}

#endif /* __HYPERCALL_H__ */

# $NetBSD: GENERIC_XENHVM,v 1.1.2.1 2020/04/16 08:46:34 bouyer Exp $

include "arch/i386/conf/GENERIC"

options 	XENPVHVM
options 	XEN

options 	MAXPHYS=32768	#xbd doesn't handle 64k transfers
hypervisor*	at mainbus?		# Xen hypervisor
#vcpu*		at hypervisor?		# Xen virtual CPUs
xenbus*	 	at hypervisor?		# Xen virtual bus
xencons*	at hypervisor?		# Xen virtual console
xennet*	 	at xenbus?		# Xen virtual network interface
xbd*		at xenbus?		# Xen virtual block device

/*	$NetBSD: hypercalls.h,v 1.1.2.1 2020/04/16 08:46:34 bouyer Exp $	*/

/*
 * Copyright (c) 2006 Manuel Bouyer.
 *
 * 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 ``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 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.
 *
 */

/*
 * 
 * Communication to/from hypervisor.
 * 
 * Copyright (c) 2002-2004, K A Fraser
 * 
 * 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.
 */


#ifndef _XENI386_HYPERVISOR_H_
#define _XENI386_HYPERVISOR_H_
/*
 * Assembler stubs for hyper-calls.
 */

#include <machine/pte.h> /* pt_entry_t */

/* hypercall via the hypercall call page */
#define __str(x) #x
#define _str(x) __str(x)
#define _hypercall(name, input_const, output_const) \
	__asm volatile ( \
	    "call hypercall_page + ("_str(name)" * 32)" \
	    : output_const \
	    : input_const \
	    : "memory" )

#define _harg(...) __VA_ARGS__
	

static __inline int
HYPERVISOR_set_trap_table(trap_info_t *table)
{
    int ret;
    unsigned long ign1;

	_hypercall(__HYPERVISOR_set_trap_table, _harg("1" (table)),
	    _harg("=a" (ret), "=b" (ign1)));

    return ret;
}

static __inline int
HYPERVISOR_set_gdt(unsigned long *frame_list, int entries)
{
    int ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_set_gdt, _harg("1" (frame_list), "2" (entries)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

static __inline int
HYPERVISOR_stack_switch(unsigned long ss, unsigned long esp)
{
    int ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_stack_switch, _harg("1" (ss), "2" (esp)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

static __inline int
HYPERVISOR_set_callbacks(
    unsigned long event_selector, unsigned long event_address,
    unsigned long failsafe_selector, unsigned long failsafe_address)
{
    int ret;
    unsigned long ign1, ign2, ign3, ign4;

    _hypercall(__HYPERVISOR_set_callbacks,
	_harg("1" (event_selector),"2" (event_address),
	    "3" (failsafe_selector), "4" (failsafe_address)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4)));

    return ret;
}

#if __XEN_INTERFACE_VERSION__ < 0x00030204
static __inline int
HYPERVISOR_dom0_op(dom0_op_t *dom0_op)
{
    int ret;
    unsigned long ign1;

    dom0_op->interface_version = DOM0_INTERFACE_VERSION;
    _hypercall(__HYPERVISOR_dom0_op, _harg("1" (dom0_op)),
	_harg("=a" (ret), "=b" (ign1)));

    return ret;
}
#endif	/* __XEN_INTERFACE_VERSION__ */

static __inline int
HYPERVISOR_set_debugreg(int reg, unsigned long value)
{
    int ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_set_debugreg, _harg("1" (reg), "2" (value)),
	 _harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

static __inline unsigned long
HYPERVISOR_get_debugreg(int reg)
{
    unsigned long ret;
    unsigned long ign1;

    _hypercall(__HYPERVISOR_get_debugreg, _harg("1" (reg)),
	_harg("=a" (ret), "=b" (ign1)));

    return ret;
}

#include <xen/include/public/arch-x86/xen-mca.h>

static __inline int
HYPERVISOR_machine_check(struct xen_mc *mc)
{
     int ret;
     unsigned long ign1;
  
     mc->interface_version = XEN_MCA_INTERFACE_VERSION;
     _hypercall(__HYPERVISOR_mca, _harg("1" (mc)),
	  _harg("=a" (ret), "=b" (ign1)));
  
     return ret;
}

static __inline int
HYPERVISOR_hvm_op(int cmd, void *arg)
{
    int ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_hvm_op, _harg("1" (cmd), "2" (arg)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

static __inline int
HYPERVISOR_mmu_update(mmu_update_t *req, int count, int *success_count,
    domid_t domid)
{
    int ret;
    unsigned long ign1, ign2, ign3, ign4;

    _hypercall(__HYPERVISOR_mmu_update,
	_harg("1" (req), "2" (count), "3" (success_count), "4" (domid)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4)));

    return ret;
}

static __inline int
HYPERVISOR_mmuext_op(struct mmuext_op *op, int count, int *success_count,
    domid_t domid)
{
    int ret;
    unsigned long ign1, ign2, ign3, ign4;

    _hypercall(__HYPERVISOR_mmuext_op,
	_harg("1" (op), "2" (count), "3" (success_count), "4" (domid)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4)));

    return ret;
}

static __inline int
HYPERVISOR_fpu_taskswitch(int set)
{
    long ret;
    long ign1;

    _hypercall(__HYPERVISOR_fpu_taskswitch, _harg("1" (set)),
	_harg("=a" (ret), "=b" (ign1)));

    return ret;
}

static __inline int
HYPERVISOR_update_descriptor(uint64_t ma, uint32_t word1, uint32_t word2)
{
    int ret;
    unsigned long ign1, ign2, ign3, ign4;
    int ma1 = ma & 0xffffffff;
    int ma2 = (ma >> 32) & 0xffffffff;

    _hypercall(__HYPERVISOR_update_descriptor,
	_harg("1" (ma1), "2" (ma2), "3" (word1), "4" (word2)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4)));

    return ret;
}

static __inline int
HYPERVISOR_memory_op(unsigned int cmd, void *arg)
{
    int ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_memory_op, _harg("1" (cmd), "2" (arg)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

#ifdef XENPV
static __inline int
HYPERVISOR_update_va_mapping(unsigned long page_nr, pt_entry_t new_val,
    unsigned long flags)
{
    int ret;
    unsigned long ign1, ign2, ign3, ign4;
    unsigned long pte_low, pte_hi;

    pte_low = new_val & 0xffffffff;
    pte_hi = new_val >> 32;

    _hypercall(__HYPERVISOR_update_va_mapping,
	_harg("1" (page_nr), "2" (pte_low), "3" (pte_hi), "4" (flags)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4)));

#ifdef notdef
    if (__predict_false(ret < 0))
        panic("Failed update VA mapping: %08lx, %08lx, %08lx",
              page_nr, new_val, flags);
#endif

    return ret;
}

static __inline int
HYPERVISOR_update_va_mapping_otherdomain(unsigned long page_nr,
    pt_entry_t new_val, unsigned long flags, domid_t domid)
{
    int ret;
    unsigned long ign1, ign2, ign3, ign4, ign5;
    unsigned long pte_low, pte_hi;

    pte_low = new_val & 0xffffffff;
    pte_hi = new_val >> 32;

    _hypercall(__HYPERVISOR_update_va_mapping_otherdomain,
	_harg("1" (page_nr), "2" (pte_low), "3" (pte_hi), "4" (flags), "5" (domid)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3), "=S" (ign4),
	    "=D" (ign5)));

    return ret;
}
#endif /* XENPV */

static __inline int
HYPERVISOR_xen_version(int cmd, void *arg)
{
    int ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_xen_version, _harg("1" (cmd), "2" (arg)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

static __inline int
HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count)
{
    int ret;
    unsigned long ign1, ign2, ign3;

    _hypercall(__HYPERVISOR_grant_table_op,
	_harg("1" (cmd), "2" (uop), "3" (count)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3)));

    return ret;
}


static __inline int
HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args)
{
    long ret;
    unsigned long ign1, ign2, ign3;

    _hypercall(__HYPERVISOR_vcpu_op,
	_harg("1" (cmd), "2" (vcpuid), "3" (extra_args)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3)));

    return ret;
}

static __inline long
HYPERVISOR_yield(void)
{
    long ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_sched_op, _harg("1" (SCHEDOP_yield), "2" (0)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

static __inline long
HYPERVISOR_block(void)
{
    long ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_sched_op, _harg("1" (SCHEDOP_block), "2" (0)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

static __inline long
HYPERVISOR_shutdown(void)
{
    long ret;
    unsigned long ign1, ign2;

#if __XEN_INTERFACE_VERSION__ >= 0x00030201

    struct sched_shutdown shutdown_reason = {
	    .reason = SHUTDOWN_poweroff
    };

    _hypercall(__HYPERVISOR_sched_op,
	_harg("1" (SCHEDOP_shutdown), "2"  (&shutdown_reason)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));
#else
     _hypercall(__HYPERVISOR_sched_op,
	_harg("1" (SCHEDOP_shutdown), "2" (SHUTDOWN_poweroff)),
 	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

#endif	

    return ret;
}

static __inline long
HYPERVISOR_crash(void)
{
    long ret;
    unsigned long ign1, ign2;

#if __XEN_INTERFACE_VERSION__ >= 0x00030201

    struct sched_shutdown shutdown_reason = {
	    .reason = SHUTDOWN_crash
    };

    _hypercall(__HYPERVISOR_sched_op,
	_harg("1" (SCHEDOP_shutdown), "2"  (&shutdown_reason)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));
#else
    _hypercall(__HYPERVISOR_sched_op,
	_harg("1" (SCHEDOP_shutdown), "2" (SHUTDOWN_crash)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));
#endif

    return ret;
}

static __inline long
HYPERVISOR_reboot(void)
{
    long ret;
    unsigned long ign1, ign2;

#if __XEN_INTERFACE_VERSION__ >= 0x00030201

    struct sched_shutdown shutdown_reason = {
	    .reason = SHUTDOWN_reboot
    };

    _hypercall(__HYPERVISOR_sched_op,
	_harg("1" (SCHEDOP_shutdown), "2"  (&shutdown_reason)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));
#else
    _hypercall(__HYPERVISOR_sched_op,
	_harg("1" (SCHEDOP_shutdown), "2" (SHUTDOWN_reboot)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));
#endif

    return ret;
}

static __inline long
HYPERVISOR_suspend(unsigned long srec)
{
    long ret;
    unsigned long ign1, ign2, ign3;

#if __XEN_INTERFACE_VERSION__ >= 0x00030201

    struct sched_shutdown shutdown_reason = {
	    .reason = SHUTDOWN_suspend
    };

    _hypercall(__HYPERVISOR_sched_op,
	_harg("1" (SCHEDOP_shutdown), "2"  (&shutdown_reason), "3" (srec)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3)));
#else
    _hypercall(__HYPERVISOR_sched_op,
	_harg("1" (SCHEDOP_shutdown), "2" (SHUTDOWN_suspend), "3" (srec)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3)));
#endif

    return ret;
}

static __inline long
HYPERVISOR_set_timer_op(uint64_t timeout)
{
    long ret;
    unsigned long timeout_hi = (unsigned long)(timeout>>32);
    unsigned long timeout_lo = (unsigned long)timeout;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_set_timer_op,
	 _harg("1" (timeout_lo), "2" (timeout_hi)),
	 _harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

static __inline int
HYPERVISOR_platform_op(struct xen_platform_op *platform_op)
{
    int ret;
    unsigned long ign1;

    platform_op->interface_version = XENPF_INTERFACE_VERSION;
    _hypercall(__HYPERVISOR_platform_op, _harg("1" (platform_op)),
	_harg("=a" (ret), "=b" (ign1)));

    return ret;
}

static __inline int
HYPERVISOR_multicall(void *call_list, int nr_calls)
{
    int ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_multicall,
	 _harg("1" (call_list), "2" (nr_calls)),
	 _harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}


static __inline int
HYPERVISOR_event_channel_op(evtchn_op_t *op)
{
    int ret;
    unsigned long ign1;

#if __XEN_INTERFACE_VERSION__ < 0x00030202
    _hypercall(__HYPERVISOR_event_channel_op, _harg("1" (op)),
	_harg("=a" (ret), "=b" (ign1)));
#else
    unsigned long ign2;

    _hypercall(__HYPERVISOR_event_channel_op, _harg("1" (op->cmd), "2" (&op->u)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));
#endif
    return ret;
}

static __inline int
HYPERVISOR_console_io(int cmd, int count, char *str)
{
    int ret;
    unsigned long ign1, ign2, ign3;

    _hypercall(__HYPERVISOR_console_io,
	_harg("1" (cmd), "2" (count), "3" (str)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2), "=d" (ign3)));

    return ret;
}

static __inline int
HYPERVISOR_physdev_op(void *physdev_op)
{
    int ret;
    unsigned long ign1;

    _hypercall(__HYPERVISOR_physdev_op, _harg("1" (physdev_op)),
	_harg("=a" (ret), "=b" (ign1)));

    return ret;
}

static __inline int
HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type)
{
    int ret;
    unsigned long ign1, ign2;

    _hypercall(__HYPERVISOR_vm_assist, _harg("1" (cmd), "2" (type)),
	_harg("=a" (ret), "=b" (ign1), "=c" (ign2)));

    return ret;
}

static __inline int
HYPERVISOR_sysctl(void *sysctl)
{
    int ret;
    unsigned long ign1;

    _hypercall(__HYPERVISOR_sysctl, _harg("1" (sysctl)),
	_harg("=a" (ret), "=b" (ign1)));

    return ret;
}
#endif /* _XENI386_HYPERVISOR_H_ */