/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#if defined(__lint)
#include <kmdb/kmdb_asmutil.h>
#endif

#include <sys/asm_linkage.h>

#if defined(__lint)
/*ARGSUSED*/
uintptr_t
cas(uintptr_t *rs1, uintptr_t rs2, uintptr_t rd)
{
        return (0);
}
#else

        ENTRY_NP(cas)
        movq    %rsi, %rax
        lock
          cmpxchgq %rdx, (%rdi)
        ret
        SET_SIZE(cas)
#endif

#if defined(__lint)
void
membar_producer(void)
{
}
#else

        ENTRY(membar_producer)
        sfence
        ret
        SET_SIZE(membar_producer)

#endif

#if defined(__lint)
/*ARGSUSED*/
void
rdmsr(uint32_t addr, uint64_t *retp)
{
}
#else

        ENTRY(rdmsr)
        movl    %edi, %ecx
        rdmsr
        movl    %eax, (%rsi)
        movl    %edx, 4(%rsi)
        ret
        SET_SIZE(rdmsr)

#endif

#if defined(__lint)
/*ARGSUSED*/
void
wrmsr(uint32_t addr, uint64_t *valp)
{
}
#else

        ENTRY(wrmsr)
        movl    (%rsi), %eax
        movl    4(%rsi), %edx
        movl    %edi, %ecx
        wrmsr
        ret
        SET_SIZE(wrmsr)

#endif

#if defined(__lint)
uintptr_t
get_fp(void)
{
        return (0);
}
#else

        ENTRY(get_fp)
        movq    %rbp, %rax
        ret
        SET_SIZE(get_fp)

#endif

#if defined(__lint)
/*ARGSUSED*/
void
kmt_in(void *buf, size_t nbytes, uintptr_t addr)
{
}

/*ARGSUSED*/
void
kmt_out(void *buf, size_t nbytes, uintptr_t addr)
{
}
#else

        ENTRY_NP(kmt_in)
        cmpq    $4, %rsi
        je      4f
        cmpq    $2, %rsi
        je      2f

1:      inb     (%dx)
        movb    %al, 0(%rdi)
        ret

2:      inw     (%dx)
        movw    %ax, 0(%rdi)
        ret

4:      inl     (%dx)
        movl    %eax, 0(%rdi)
        ret
        SET_SIZE(kmt_in)

        ENTRY_NP(kmt_out)
        cmpq    $4, %rsi
        je      4f
        cmpq    $2, %rsi
        je      2f

1:      movb    0(%rdi), %al
        outb    (%dx)
        ret

2:      movw    0(%rdi), %ax
        outw    (%dx)
        ret

4:      movl    0(%rdi), %eax
        outl    (%dx)
        ret
        SET_SIZE(kmt_out)

#endif