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 1.6 1996/01/01 17:11:21 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 #ifdef GUPROF 50 #define CALIB_SCALE 1000 51 #define KCOUNT(p,index) ((p)->kcount[(index) \ 52 / (HISTFRACTION * sizeof(*(p)->kcount))]) 53 #define MCOUNT_DECL(s) 54 #define MCOUNT_ENTER(s) 55 #define MCOUNT_EXIT(s) 56 #define PC_TO_I(p, pc) ((fptrint_t)(pc) - (fptrint_t)(p)->lowpc) 57 #else 58 #define MCOUNT_DECL(s) u_long s; 59 #define MCOUNT_ENTER(s) { s = read_eflags(); disable_intr(); } 60 #define MCOUNT_EXIT(s) (write_eflags(s)) 61 #endif /* GUPROF */ 62 63 #else /* !KERNEL */ 64 65 #define _MCOUNT_DECL static __inline void _mcount 66 67 #define MCOUNT \ 68 void \ 69 mcount() \ 70 { \ 71 fptrint_t selfpc, frompc; \ 72 /* \ 73 * Find the return address for mcount, \ 74 * and the return address for mcount's caller. \ 75 * \ 76 * selfpc = pc pushed by call to mcount \ 77 */ \ 78 asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \ 79 /* \ 80 * frompc = pc pushed by call to mcount's caller. \ 81 * The caller's stack frame has already been built, so %ebp is \ 82 * the caller's frame pointer. The caller's raddr is in the \ 83 * caller's frame following the caller's caller's frame pointer. \ 84 */ \ 85 asm("movl (%%ebp),%0" : "=r" (frompc)); \ 86 frompc = ((fptrint_t *)frompc)[1]; \ 87 _mcount(frompc, selfpc); \ 88 } 89 #endif /* KERNEL */ 90 91 /* An unsigned integral type that can hold function pointers. */ 92 typedef u_int fptrint_t; 93 94 /* 95 * An unsigned integral type that can hold non-negative difference between 96 * function pointers. 97 */ 98 typedef int fptrdiff_t; 99 100 __BEGIN_DECLS 101 #ifdef KERNEL 102 void mcount __P((fptrint_t frompc, fptrint_t selfpc)); 103 #else 104 void mcount __P((void)) __asm("mcount"); 105 static void _mcount __P((fptrint_t frompc, fptrint_t selfpc)); 106 #endif 107 108 #ifdef GUPROF 109 u_int cputime __P((void)); 110 void mexitcount __P((fptrint_t selfpc)); 111 #endif 112 __END_DECLS 113 114 #endif /* !_MACHINE_PROFILE_H_ */ 115