1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)profile.h 8.1 (Berkeley) 6/11/93 30 * $FreeBSD: src/sys/amd64/include/profile.h,v 1.33 2004/01/06 20:36:21 nectar Exp $ 31 */ 32 33 #ifndef _CPU_PROFILE_H_ 34 #define _CPU_PROFILE_H_ 35 36 #include <sys/cdefs.h> 37 38 #define FUNCTION_ALIGNMENT 4 39 40 #define _MCOUNT_DECL \ 41 static void _mcount(u_long frompc, u_long selfpc) __used; \ 42 static void _mcount 43 44 #ifdef __GNUC__ 45 #define MCOUNT __asm(" \n\ 46 .text \n\ 47 .p2align 4,0x90 \n\ 48 .globl .mcount \n\ 49 .type .mcount,@function \n\ 50 .mcount: \n\ 51 pushq %rdi \n\ 52 pushq %rsi \n\ 53 pushq %rdx \n\ 54 pushq %rcx \n\ 55 pushq %r8 \n\ 56 pushq %r9 \n\ 57 pushq %rax \n\ 58 movq 8(%rbp),%rdi \n\ 59 movq 7*8(%rsp),%rsi \n\ 60 call _mcount \n\ 61 popq %rax \n\ 62 popq %r9 \n\ 63 popq %r8 \n\ 64 popq %rcx \n\ 65 popq %rdx \n\ 66 popq %rsi \n\ 67 popq %rdi \n\ 68 ret \n\ 69 .size .mcount, . - .mcount"); 70 #else /* __GNUC__ */ 71 #define MCOUNT \ 72 void \ 73 mcount() \ 74 { \ 75 } 76 #endif /* __GNUC__ */ 77 78 __BEGIN_DECLS 79 #ifdef __GNUC__ 80 void mcount(void) __asm(".mcount"); 81 #endif 82 __END_DECLS 83 84 #endif /* !_CPU_PROFILE_H_ */ 85