i86xpv/ml/ia32.il

/*
 * 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 x86 kernel running on the hypervisor
/

    .inline __hypercall0, 4
    movl    (%esp), %eax
    int $0x82
    .end

    .inline __hypercall1, 8
    pushl   %ebx
    movl    4(%esp), %eax
    movl    8(%esp), %ebx
    int $0x82
    popl    %ebx
    .end

    .inline __hypercall2, 12
    pushl   %ebx
    movl    4(%esp), %eax
    movl    8(%esp), %ebx
    movl    12(%esp), %ecx
    int $0x82
    popl    %ebx
    .end

    .inline __hypercall3, 16
    pushl   %ebx
    movl    4(%esp), %eax
    movl    8(%esp), %ebx
    movl    12(%esp), %ecx
    movl    16(%esp), %edx
    int $0x82
    popl    %ebx
    .end

    .inline __hypercall4, 20
    pushl   %ebx
    pushl   %esi
    movl    8(%esp), %eax
    movl    12(%esp), %ebx
    movl    16(%esp), %ecx
    movl    20(%esp), %edx
    movl    24(%esp), %esi
    int $0x82
    popl    %esi
    popl    %ebx
    .end

    .inline __hypercall5, 24
    pushl   %ebx
    pushl   %esi
    pushl   %edi
    movl    12(%esp), %eax
    movl    16(%esp), %ebx
    movl    20(%esp), %ecx
    movl    24(%esp), %edx
    movl    28(%esp), %esi
    movl    32(%esp), %edi
    int $0x82
    popl    %edi
    popl    %esi
    popl    %ebx
    .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
    .end