profile.h revision 33047
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 1.13 1997/12/15 02:18:30 tegge Exp $ 35 */ 36 37#ifndef _MACHINE_PROFILE_H_ 38#define _MACHINE_PROFILE_H_ 39 40#ifdef KERNEL 41/* 42 * Config generates something to tell the compiler to align functions on 16 43 * byte boundaries. A strict alignment is good for keeping the tables small. 44 */ 45#define FUNCTION_ALIGNMENT 16 46 47/* 48 * The kernel uses assembler stubs instead of unportable inlines. 49 * This is mainly to save a little time when profiling is not enabled, 50 * which is the usual case for the kernel. 51 */ 52#define _MCOUNT_DECL void mcount 53#define MCOUNT 54 55#ifdef GUPROF 56#define CALIB_SCALE 1000 57#define KCOUNT(p,index) ((p)->kcount[(index) \ 58 / (HISTFRACTION * sizeof(HISTCOUNTER))]) 59#define MCOUNT_DECL(s) 60#define MCOUNT_ENTER(s) 61#define MCOUNT_EXIT(s) 62#define PC_TO_I(p, pc) ((fptrint_t)(pc) - (fptrint_t)(p)->lowpc) 63#else 64#define MCOUNT_DECL(s) u_long s; 65#ifdef SMP 66#define MCOUNT_ENTER(s) { s = read_eflags(); \ 67 __asm __volatile("cli" : : : "memory"); \ 68 s_lock_np(&mcount_lock); } 69#define MCOUNT_EXIT(s) { s_unlock_np(&mcount_lock); write_eflags(s); } 70#else 71#define MCOUNT_ENTER(s) { s = read_eflags(); disable_intr(); } 72#define MCOUNT_EXIT(s) (write_eflags(s)) 73#endif 74#endif /* GUPROF */ 75 76#else /* !KERNEL */ 77 78#define FUNCTION_ALIGNMENT 4 79 80#define _MCOUNT_DECL static __inline void _mcount 81 82#define MCOUNT \ 83void \ 84mcount() \ 85{ \ 86 fptrint_t selfpc, frompc; \ 87 /* \ 88 * Find the return address for mcount, \ 89 * and the return address for mcount's caller. \ 90 * \ 91 * selfpc = pc pushed by call to mcount \ 92 */ \ 93 asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \ 94 /* \ 95 * frompc = pc pushed by call to mcount's caller. \ 96 * The caller's stack frame has already been built, so %ebp is \ 97 * the caller's frame pointer. The caller's raddr is in the \ 98 * caller's frame following the caller's caller's frame pointer. \ 99 */ \ 100 asm("movl (%%ebp),%0" : "=r" (frompc)); \ 101 frompc = ((fptrint_t *)frompc)[1]; \ 102 _mcount(frompc, selfpc); \ 103} 104#endif /* KERNEL */ 105 106/* An unsigned integral type that can hold function pointers. */ 107typedef u_int fptrint_t; 108 109/* 110 * An unsigned integral type that can hold non-negative difference between 111 * function pointers. 112 */ 113typedef u_int fptrdiff_t; 114 115#ifdef KERNEL 116 117void mcount __P((fptrint_t frompc, fptrint_t selfpc)); 118 119#ifdef GUPROF 120struct gmonparam; 121 122void nullfunc_loop_profiled __P((void)); 123void nullfunc_profiled __P((void)); 124void startguprof __P((struct gmonparam *p)); 125void stopguprof __P((struct gmonparam *p)); 126#else 127#define startguprof(p) 128#define stopguprof(p) 129#endif /* GUPROF */ 130 131#else /* !KERNEL */ 132 133#include <sys/cdefs.h> 134 135__BEGIN_DECLS 136#ifdef __GNUC__ 137void mcount __P((void)) __asm("mcount"); 138#endif 139static void _mcount __P((fptrint_t frompc, fptrint_t selfpc)); 140__END_DECLS 141 142#endif /* KERNEL */ 143 144#ifdef GUPROF 145/* XXX doesn't quite work outside kernel yet. */ 146extern int cputime_bias; 147 148__BEGIN_DECLS 149int cputime __P((void)); 150void empty_loop __P((void)); 151void mexitcount __P((fptrint_t selfpc)); 152void nullfunc __P((void)); 153void nullfunc_loop __P((void)); 154__END_DECLS 155#endif 156 157#endif /* !_MACHINE_PROFILE_H_ */ 158