i86xpv/ml/amd64.il

	amd64.il revision 5c7544f740a475b813dfbc871b7c965e54df7989
/*
 * 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 2008 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

/
/ prefetch 64 bytes
/
    .inline prefetch64,8
    prefetcht0 (%rdi)
    prefetcht0 32(%rdi)
    .end