Annotation of src/usr.bin/gprof/pmax.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: pmax.c,v 1.3 1995/04/19 07:16:18 cgd Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1992, 1993
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * This software was developed by the Computer Systems Engineering group
! 8: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
! 9: * contributed to Berkeley. Modified by Ralph Campbell for mips.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the University of
! 22: * California, Berkeley and its contributors.
! 23: * 4. Neither the name of the University nor the names of its contributors
! 24: * may be used to endorse or promote products derived from this software
! 25: * without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 37: * SUCH DAMAGE.
! 38: *
! 39: * From: sparc.c 5.1 (Berkeley) 7/7/92
! 40: */
! 41:
! 42: #ifndef lint
! 43: #if 0
! 44: static char sccsid[] = "@(#)mips.c 8.1 (Berkeley) 6/6/93";
! 45: #else
! 46: static char rcsid[] = "$NetBSD: pmax.c,v 1.3 1995/04/19 07:16:18 cgd Exp $";
! 47: #endif
! 48: #endif /* not lint */
! 49:
! 50: #include "gprof.h"
! 51:
! 52: /*
! 53: * a namelist entry to be the child of indirect calls
! 54: */
! 55: nltype indirectchild = {
! 56: "(*)" , /* the name */
! 57: (unsigned long) 0 , /* the pc entry point */
! 58: (unsigned long) 0 , /* entry point aligned to histogram */
! 59: (double) 0.0 , /* ticks in this routine */
! 60: (double) 0.0 , /* cumulative ticks in children */
! 61: (long) 0 , /* how many times called */
! 62: (long) 0 , /* times called by live arcs */
! 63: (long) 0 , /* how many calls to self */
! 64: (double) 1.0 , /* propagation fraction */
! 65: (double) 0.0 , /* self propagation time */
! 66: (double) 0.0 , /* child propagation time */
! 67: (short) 0 , /* print flag */
! 68: (short) 0 , /* flags */
! 69: (int) 0 , /* index in the graph list */
! 70: (int) 0 , /* graph call chain top-sort order */
! 71: (int) 0 , /* internal number of cycle on */
! 72: (int) 0 , /* number of live parent arcs */
! 73: (struct nl *) &indirectchild , /* pointer to head of cycle */
! 74: (struct nl *) 0 , /* pointer to next member of cycle */
! 75: (arctype *) 0 , /* list of caller arcs */
! 76: (arctype *) 0 /* list of callee arcs */
! 77: };
! 78:
! 79: findcall(parentp, p_lowpc, p_highpc)
! 80: nltype *parentp;
! 81: unsigned long p_lowpc;
! 82: unsigned long p_highpc;
! 83: {
! 84: register u_long pc;
! 85: nltype *childp;
! 86: unsigned long destpc;
! 87: register long op;
! 88: register int off;
! 89:
! 90: if (textspace == 0)
! 91: return;
! 92: if (p_lowpc < s_lowpc)
! 93: p_lowpc = s_lowpc;
! 94: if (p_highpc > s_highpc)
! 95: p_highpc = s_highpc;
! 96:
! 97: for (pc = p_lowpc; pc < p_highpc; pc += 4) {
! 98: off = pc - s_lowpc;
! 99: op = *(u_long *)&textspace[off];
! 100: if ((op & 0xfc000000) == 0x0c000000) {
! 101: /*
! 102: * a jal insn -- check that this
! 103: * is the address of a function.
! 104: */
! 105: off = (op & 0x03ffffff) << 2;
! 106: destpc = (pc & 0xf0000000) | off;
! 107: if (destpc >= s_lowpc && destpc <= s_highpc) {
! 108: childp = nllookup(destpc);
! 109: if (childp != 0 && childp->value == destpc)
! 110: addarc(parentp, childp, 0L);
! 111: }
! 112: } else if ((op & 0xfc00f83f) == 0x0000f809)
! 113: /*
! 114: * A jalr -- an indirect call.
! 115: */
! 116: addarc(parentp, &indirectchild, 0L);
! 117: }
! 118: }
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