profile.h revision 13157
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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)profile.h 8.1 (Berkeley) 6/11/93 34 * $Id: profile.h,v 1.5 1995/12/29 15:28:54 bde Exp $ 35 */ 36 37#ifndef _MACHINE_PROFILE_H_ 38#define _MACHINE_PROFILE_H_ 39 40#ifdef KERNEL 41/* 42 * The kernel uses assembler stubs instead of unportable inlines. 43 * This is mainly to save a little time when profiling is not enabled, 44 * which is the usual case for the kernel. 45 */ 46#define _MCOUNT_DECL void mcount 47#define MCOUNT 48 49#else /* !KERNEL */ 50 51#define _MCOUNT_DECL static __inline void _mcount 52 53#define MCOUNT \ 54void \ 55mcount() \ 56{ \ 57 fptrint_t selfpc, frompc; \ 58 /* \ 59 * Find the return address for mcount, \ 60 * and the return address for mcount's caller. \ 61 * \ 62 * selfpc = pc pushed by call to mcount \ 63 */ \ 64 asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \ 65 /* \ 66 * frompc = pc pushed by call to mcount's caller. \ 67 * The caller's stack frame has already been built, so %ebp is \ 68 * the caller's frame pointer. The caller's raddr is in the \ 69 * caller's frame following the caller's caller's frame pointer. \ 70 */ \ 71 asm("movl (%%ebp),%0" : "=r" (frompc)); \ 72 frompc = ((fptrint_t *)frompc)[1]; \ 73 _mcount(frompc, selfpc); \ 74} 75#endif /* KERNEL */ 76 77#ifdef KERNEL 78#define CALIB_SCALE 1000 79#define KCOUNT(p,index) ((p)->kcount[(index) \ 80 / (HISTFRACTION * sizeof(*(p)->kcount))]) 81#define MCOUNT_ENTER { save_eflags = read_eflags(); disable_intr(); } 82#define MCOUNT_EXIT (write_eflags(save_eflags)) 83#define PC_TO_I(p, pc) ((fptrint_t)(pc) - (fptrint_t)(p)->lowpc) 84#endif 85 86/* An unsigned integral type that can hold function pointers. */ 87typedef u_int fptrint_t; 88 89/* 90 * An unsigned integral type that can hold non-negative difference between 91 * function pointers. 92 */ 93typedef int fptrdiff_t; 94 95__BEGIN_DECLS 96#ifdef KERNEL 97void mcount __P((fptrint_t frompc, fptrint_t selfpc)); 98#else 99void mcount __P((void)) __asm("mcount"); 100static void _mcount __P((fptrint_t frompc, fptrint_t selfpc)); 101#endif 102 103#ifdef GUPROF 104u_int cputime __P((void)); 105void mexitcount __P((fptrint_t selfpc)); 106#endif 107__END_DECLS 108 109#endif /* !_MACHINE_PROFILE_H_ */ 110