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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/
/ Inline functions for the x64 kernel running on the hypervisor
/
.inline __hypercall0, 0
movq %rdi, %rax
syscall
.end
.inline __hypercall1, 0
movq %rdi, %rax
movq %rsi, %rdi / arg 1
syscall
.end
.inline __hypercall2, 0
movq %rdi, %rax
movq %rsi, %rdi / arg 1
movq %rdx, %rsi / arg 2
syscall
.end
.inline __hypercall3, 0
movq %rdi, %rax
movq %rsi, %rdi / arg 1
movq %rdx, %rsi / arg 2
movq %rcx, %rdx / arg 3
syscall
.end
/* XXPV studio bug r10 is changed to eax by compiler */
.inline __hypercall4_broken, 0
movq %rdi, %rax
movq %rsi, %rdi / arg 1
movq %rdx, %rsi / arg 2
movq %rcx, %rdx / arg 3
movq %r8, %r10 / r10 = 4th arg
syscall
.end
.inline __hypercall5_broken, 0
movq %rdi, %rax
movq %rsi, %rdi / arg 1
movq %rdx, %rsi / arg 2
movq %rcx, %rdx / arg 3
movq %r8, %r10 / r10 = 4th arg
movq %r9, %r8 / arg 5
syscall
.end
/*
* Read the -real- TSC.
* This is difficult to virtualize on the hypervisor given there is
* no way to prevent preemption; thus this inline function
* should only be used in the middle of the paravirtualized
* implementation of tsc_read.
*/
.inline __rdtsc_insn, 0
rdtsc
shlq $32, %rdx
orq %rdx, %rax
.end
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