profile.h revision 22639
11543Srgrimes/* 21543Srgrimes * Copyright (c) 1992, 1993 31543Srgrimes * The Regents of the University of California. All rights reserved. 41543Srgrimes * 51543Srgrimes * Redistribution and use in source and binary forms, with or without 61543Srgrimes * modification, are permitted provided that the following conditions 71543Srgrimes * are met: 81543Srgrimes * 1. Redistributions of source code must retain the above copyright 91543Srgrimes * notice, this list of conditions and the following disclaimer. 101543Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111543Srgrimes * notice, this list of conditions and the following disclaimer in the 121543Srgrimes * documentation and/or other materials provided with the distribution. 131543Srgrimes * 3. All advertising materials mentioning features or use of this software 141543Srgrimes * must display the following acknowledgement: 151543Srgrimes * This product includes software developed by the University of 161543Srgrimes * California, Berkeley and its contributors. 171543Srgrimes * 4. Neither the name of the University nor the names of its contributors 181543Srgrimes * may be used to endorse or promote products derived from this software 191543Srgrimes * without specific prior written permission. 201543Srgrimes * 211543Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221543Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231543Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241543Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251543Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261543Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271543Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281543Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291543Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301543Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311543Srgrimes * SUCH DAMAGE. 321543Srgrimes * 331543Srgrimes * @(#)profile.h 8.1 (Berkeley) 6/11/93 3421673Sjkh * $FreeBSD: head/sys/amd64/include/profile.h 22639 1997-02-13 10:47:29Z bde $ 351543Srgrimes */ 361543Srgrimes 3713107Sbde#ifndef _MACHINE_PROFILE_H_ 3813107Sbde#define _MACHINE_PROFILE_H_ 392166Spaul 4013157Sbde#ifdef KERNEL 4113157Sbde/* 4222639Sbde * Config generates something to tell the compiler to align functions on 16 4322639Sbde * byte boundaries. A strict alignment is good for keeping the tables small. 4422639Sbde */ 4522639Sbde#define FUNCTION_ALIGNMENT 16 4622639Sbde 4722639Sbde/* 4813157Sbde * The kernel uses assembler stubs instead of unportable inlines. 4913157Sbde * This is mainly to save a little time when profiling is not enabled, 5013157Sbde * which is the usual case for the kernel. 5113157Sbde */ 5213157Sbde#define _MCOUNT_DECL void mcount 5313157Sbde#define MCOUNT 541543Srgrimes 5517879Sbde#ifdef GUPROF 5617879Sbde#define CALIB_SCALE 1000 5717879Sbde#define KCOUNT(p,index) ((p)->kcount[(index) \ 5822639Sbde / (HISTFRACTION * sizeof(HISTCOUNTER))]) 5917879Sbde#define MCOUNT_DECL(s) 6017879Sbde#define MCOUNT_ENTER(s) 6117879Sbde#define MCOUNT_EXIT(s) 6217879Sbde#define PC_TO_I(p, pc) ((fptrint_t)(pc) - (fptrint_t)(p)->lowpc) 6317879Sbde#else 6417879Sbde#define MCOUNT_DECL(s) u_long s; 6517879Sbde#define MCOUNT_ENTER(s) { s = read_eflags(); disable_intr(); } 6617879Sbde#define MCOUNT_EXIT(s) (write_eflags(s)) 6717879Sbde#endif /* GUPROF */ 6817879Sbde 6913157Sbde#else /* !KERNEL */ 7013157Sbde 7122639Sbde#define FUNCTION_ALIGNMENT 4 7222639Sbde 7313157Sbde#define _MCOUNT_DECL static __inline void _mcount 7413157Sbde 751543Srgrimes#define MCOUNT \ 7613157Sbdevoid \ 7713157Sbdemcount() \ 7813157Sbde{ \ 7913107Sbde fptrint_t selfpc, frompc; \ 801543Srgrimes /* \ 8113107Sbde * Find the return address for mcount, \ 821543Srgrimes * and the return address for mcount's caller. \ 831543Srgrimes * \ 8413107Sbde * selfpc = pc pushed by call to mcount \ 851543Srgrimes */ \ 861543Srgrimes asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \ 871543Srgrimes /* \ 8813107Sbde * frompc = pc pushed by call to mcount's caller. \ 8913107Sbde * The caller's stack frame has already been built, so %ebp is \ 9013107Sbde * the caller's frame pointer. The caller's raddr is in the \ 9113107Sbde * caller's frame following the caller's caller's frame pointer. \ 921543Srgrimes */ \ 9313107Sbde asm("movl (%%ebp),%0" : "=r" (frompc)); \ 9413107Sbde frompc = ((fptrint_t *)frompc)[1]; \ 9513107Sbde _mcount(frompc, selfpc); \ 961543Srgrimes} 9713157Sbde#endif /* KERNEL */ 982166Spaul 9913107Sbde/* An unsigned integral type that can hold function pointers. */ 10013107Sbdetypedef u_int fptrint_t; 10113107Sbde 10213107Sbde/* 10313107Sbde * An unsigned integral type that can hold non-negative difference between 10413107Sbde * function pointers. 10513107Sbde */ 10613107Sbdetypedef int fptrdiff_t; 10713107Sbde 10813157Sbde#ifdef KERNEL 10919000Sbde 11013157Sbdevoid mcount __P((fptrint_t frompc, fptrint_t selfpc)); 11119000Sbde 11219000Sbde#ifdef GUPROF 11319000Sbdestruct gmonparam; 11419000Sbde 11519000Sbdevoid nullfunc_loop_profiled __P((void)); 11619000Sbdevoid nullfunc_profiled __P((void)); 11719000Sbdevoid startguprof __P((struct gmonparam *p)); 11819000Sbdevoid stopguprof __P((struct gmonparam *p)); 11913157Sbde#else 12019000Sbde#define startguprof(p) 12119000Sbde#define stopguprof(p) 12219000Sbde#endif /* GUPROF */ 12319000Sbde 12419000Sbde#else /* !KERNEL */ 12519000Sbde 12619000Sbde#include <sys/cdefs.h> 12719000Sbde 12819000Sbde__BEGIN_DECLS 12913157Sbdevoid mcount __P((void)) __asm("mcount"); 13013157Sbdestatic void _mcount __P((fptrint_t frompc, fptrint_t selfpc)); 13119000Sbde__END_DECLS 13213157Sbde 13319000Sbde#endif /* KERNEL */ 13419000Sbde 13513157Sbde#ifdef GUPROF 13619000Sbde/* XXX doesn't quite work outside kernel yet. */ 13719000Sbdeextern int cputime_bias; 13819000Sbde 13919000Sbde__BEGIN_DECLS 14019000Sbdeint cputime __P((void)); 14119000Sbdevoid empty_loop __P((void)); 14213107Sbdevoid mexitcount __P((fptrint_t selfpc)); 14319000Sbdevoid nullfunc __P((void)); 14419000Sbdevoid nullfunc_loop __P((void)); 14519000Sbde__END_DECLS 14613157Sbde#endif 14713107Sbde 14813157Sbde#endif /* !_MACHINE_PROFILE_H_ */ 149