profile.h revision 38928
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 3438928Sjdp * $Id: profile.h,v 1.17 1998/07/14 05:09:43 bde Exp $ 351543Srgrimes */ 361543Srgrimes 3713107Sbde#ifndef _MACHINE_PROFILE_H_ 3813107Sbde#define _MACHINE_PROFILE_H_ 392166Spaul 4013157Sbde#ifdef KERNEL 4137542Sbde 4213157Sbde/* 4322639Sbde * Config generates something to tell the compiler to align functions on 16 4422639Sbde * byte boundaries. A strict alignment is good for keeping the tables small. 4522639Sbde */ 4622639Sbde#define FUNCTION_ALIGNMENT 16 4722639Sbde 4822639Sbde/* 4913157Sbde * The kernel uses assembler stubs instead of unportable inlines. 5013157Sbde * This is mainly to save a little time when profiling is not enabled, 5113157Sbde * which is the usual case for the kernel. 5213157Sbde */ 5313157Sbde#define _MCOUNT_DECL void mcount 5413157Sbde#define MCOUNT 551543Srgrimes 5617879Sbde#ifdef GUPROF 5717879Sbde#define CALIB_SCALE 1000 5817879Sbde#define KCOUNT(p,index) ((p)->kcount[(index) \ 5922639Sbde / (HISTFRACTION * sizeof(HISTCOUNTER))]) 6017879Sbde#define MCOUNT_DECL(s) 6117879Sbde#define MCOUNT_ENTER(s) 6217879Sbde#define MCOUNT_EXIT(s) 6337629Sbde#define PC_TO_I(p, pc) ((uintfptr_t)(pc) - (uintfptr_t)(p)->lowpc) 6417879Sbde#else 6517879Sbde#define MCOUNT_DECL(s) u_long s; 6628921Sfsmp#ifdef SMP 6731723Stegge#define MCOUNT_ENTER(s) { s = read_eflags(); \ 6831723Stegge __asm __volatile("cli" : : : "memory"); \ 6931723Stegge s_lock_np(&mcount_lock); } 7031723Stegge#define MCOUNT_EXIT(s) { s_unlock_np(&mcount_lock); write_eflags(s); } 7128921Sfsmp#else 7231723Stegge#define MCOUNT_ENTER(s) { s = read_eflags(); disable_intr(); } 7317879Sbde#define MCOUNT_EXIT(s) (write_eflags(s)) 7428921Sfsmp#endif 7517879Sbde#endif /* GUPROF */ 7617879Sbde 7713157Sbde#else /* !KERNEL */ 7813157Sbde 7922639Sbde#define FUNCTION_ALIGNMENT 4 8022639Sbde 8113157Sbde#define _MCOUNT_DECL static __inline void _mcount 8213157Sbde 831543Srgrimes#define MCOUNT \ 8413157Sbdevoid \ 8513157Sbdemcount() \ 8613157Sbde{ \ 8737629Sbde uintfptr_t selfpc, frompc; \ 881543Srgrimes /* \ 8913107Sbde * Find the return address for mcount, \ 901543Srgrimes * and the return address for mcount's caller. \ 911543Srgrimes * \ 9213107Sbde * selfpc = pc pushed by call to mcount \ 931543Srgrimes */ \ 941543Srgrimes asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \ 951543Srgrimes /* \ 9613107Sbde * frompc = pc pushed by call to mcount's caller. \ 9713107Sbde * The caller's stack frame has already been built, so %ebp is \ 9813107Sbde * the caller's frame pointer. The caller's raddr is in the \ 9913107Sbde * caller's frame following the caller's caller's frame pointer. \ 1001543Srgrimes */ \ 10113107Sbde asm("movl (%%ebp),%0" : "=r" (frompc)); \ 10237629Sbde frompc = ((uintfptr_t *)frompc)[1]; \ 10313107Sbde _mcount(frompc, selfpc); \ 1041543Srgrimes} 10537542Sbde 10637629Sbdetypedef unsigned int uintfptr_t; 10737542Sbde 10813157Sbde#endif /* KERNEL */ 1092166Spaul 11013107Sbde/* 11113107Sbde * An unsigned integral type that can hold non-negative difference between 11213107Sbde * function pointers. 11313107Sbde */ 11431723Steggetypedef u_int fptrdiff_t; 11513107Sbde 11613157Sbde#ifdef KERNEL 11719000Sbde 11837629Sbdevoid mcount __P((uintfptr_t frompc, uintfptr_t selfpc)); 11919000Sbde 12019000Sbde#ifdef GUPROF 12119000Sbdestruct gmonparam; 12219000Sbde 12319000Sbdevoid nullfunc_loop_profiled __P((void)); 12419000Sbdevoid nullfunc_profiled __P((void)); 12519000Sbdevoid startguprof __P((struct gmonparam *p)); 12619000Sbdevoid stopguprof __P((struct gmonparam *p)); 12713157Sbde#else 12819000Sbde#define startguprof(p) 12919000Sbde#define stopguprof(p) 13019000Sbde#endif /* GUPROF */ 13119000Sbde 13219000Sbde#else /* !KERNEL */ 13319000Sbde 13419000Sbde#include <sys/cdefs.h> 13519000Sbde 13619000Sbde__BEGIN_DECLS 13733047Sbde#ifdef __GNUC__ 13838928Sjdp#ifdef __ELF__ 13938928Sjdpvoid mcount __P((void)) __asm(".mcount"); 14038928Sjdp#else 14113157Sbdevoid mcount __P((void)) __asm("mcount"); 14233047Sbde#endif 14338928Sjdp#endif 14437629Sbdestatic void _mcount __P((uintfptr_t frompc, uintfptr_t selfpc)); 14519000Sbde__END_DECLS 14613157Sbde 14719000Sbde#endif /* KERNEL */ 14819000Sbde 14913157Sbde#ifdef GUPROF 15019000Sbde/* XXX doesn't quite work outside kernel yet. */ 15119000Sbdeextern int cputime_bias; 15219000Sbde 15319000Sbde__BEGIN_DECLS 15419000Sbdeint cputime __P((void)); 15519000Sbdevoid empty_loop __P((void)); 15637629Sbdevoid mexitcount __P((uintfptr_t selfpc)); 15719000Sbdevoid nullfunc __P((void)); 15819000Sbdevoid nullfunc_loop __P((void)); 15919000Sbde__END_DECLS 16013157Sbde#endif 16113107Sbde 16213157Sbde#endif /* !_MACHINE_PROFILE_H_ */ 163