root/sys/arch/amd64/include/profile.h
/*      $OpenBSD: profile.h,v 1.6 2023/06/27 10:11:15 cheloha Exp $     */
/*      $NetBSD: profile.h,v 1.3 2003/11/28 23:22:45 fvdl Exp $ */

/*
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 *
 *      @(#)profile.h   8.1 (Berkeley) 6/11/93
 */

#define _MCOUNT_DECL void _mcount

#ifdef __PIC__
#define __MCPLT "@PLT"
#else
#define __MCPLT
#endif

#define MCOUNT                                          \
__asm(" .globl __mcount         \n"                     \
"       .type __mcount,@function\n"                     \
"__mcount:                      \n"                     \
"       pushq   %rbp            \n"                     \
"       movq    %rsp,%rbp       \n"                     \
"       subq    $56,%rsp        \n"                     \
"       movq    %rdi,0(%rsp)    \n"                     \
"       movq    %rsi,8(%rsp)    \n"                     \
"       movq    %rdx,16(%rsp)   \n"                     \
"       movq    %rcx,24(%rsp)   \n"                     \
"       movq    %r8,32(%rsp)    \n"                     \
"       movq    %r9,40(%rsp)    \n"                     \
"       movq    %rax,48(%rsp)   \n"                     \
"       movq    0(%rbp),%r11    \n"                     \
"       movq    8(%r11),%rdi    \n"                     \
"       movq    8(%rbp),%rsi    \n"                     \
"       call    _mcount"__MCPLT"\n"                     \
"       movq    0(%rsp),%rdi    \n"                     \
"       movq    8(%rsp),%rsi    \n"                     \
"       movq    16(%rsp),%rdx   \n"                     \
"       movq    24(%rsp),%rcx   \n"                     \
"       movq    32(%rsp),%r8    \n"                     \
"       movq    40(%rsp),%r9    \n"                     \
"       movq    48(%rsp),%rax   \n"                     \
"       leave                   \n"                     \
"       ret                     \n"                     \
"       lfence                  \n"                     \
"       .size __mcount,.-__mcount");


#ifdef _KERNEL
#define MCOUNT_ENTER    s = intr_disable()
#define MCOUNT_EXIT     intr_restore(s)
#endif /* _KERNEL */