Annotation of src/usr.bin/gprof/sparc.c, Revision 1.7
1.7 ! deraadt 1: /* $OpenBSD: sparc.c,v 1.6 2006/03/25 19:06:36 espie Exp $ */
1.1 deraadt 2: /* $NetBSD: sparc.c,v 1.4 1995/04/19 07:16:24 cgd Exp $ */
3:
4: /*
5: * Copyright (c) 1992, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This software was developed by the Computer Systems Engineering group
9: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
10: * contributed to Berkeley.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
1.5 millert 20: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #include "gprof.h"
38:
39: /*
40: * a namelist entry to be the child of indirect calls
41: */
42: nltype indirectchild = {
43: "(*)" , /* the name */
44: (unsigned long) 0 , /* the pc entry point */
45: (unsigned long) 0 , /* entry point aligned to histogram */
46: (double) 0.0 , /* ticks in this routine */
47: (double) 0.0 , /* cumulative ticks in children */
48: (long) 0 , /* how many times called */
49: (long) 0 , /* times called by live arcs */
50: (long) 0 , /* how many calls to self */
51: (double) 1.0 , /* propagation fraction */
52: (double) 0.0 , /* self propagation time */
53: (double) 0.0 , /* child propagation time */
54: (short) 0 , /* print flag */
55: (short) 0 , /* flags */
56: (int) 0 , /* index in the graph list */
57: (int) 0 , /* graph call chain top-sort order */
58: (int) 0 , /* internal number of cycle on */
59: (int) 0 , /* number of live parent arcs */
60: (struct nl *) &indirectchild , /* pointer to head of cycle */
61: (struct nl *) 0 , /* pointer to next member of cycle */
62: (arctype *) 0 , /* list of caller arcs */
63: (arctype *) 0 /* list of callee arcs */
64: };
65:
1.3 mickey 66: void
1.6 espie 67: findcall(nltype *parentp, unsigned long p_lowpc, unsigned long p_highpc)
1.1 deraadt 68: {
1.6 espie 69: unsigned long pc;
1.1 deraadt 70: nltype *childp;
71: unsigned long destpc;
1.4 mpech 72: long op;
73: int off;
1.1 deraadt 74:
75: if (textspace == 0)
76: return;
77: if (p_lowpc < s_lowpc)
78: p_lowpc = s_lowpc;
79: if (p_highpc > s_highpc)
80: p_highpc = s_highpc;
81:
82: for (pc = p_lowpc; pc < p_highpc; pc += 4) {
83: off = pc - s_lowpc;
1.6 espie 84: op = *(unsigned long *)&textspace[off];
1.1 deraadt 85: if ((op & 0xc0000000) == 0x40000000) {
86: /*
87: * a pc relative call insn -- check that this
88: * is the address of a function.
89: */
90: off = (op & 0x3fffffff) << 2;
91: destpc = pc + off;
92: if (destpc >= s_lowpc && destpc <= s_highpc) {
93: childp = nllookup(destpc);
94: if (childp != 0 && childp->value == destpc)
95: addarc(parentp, childp, 0L);
96: }
97: } else if ((op & 0xfff80000) == 0x9fc00000)
98: /*
99: * A jmpl with rd = 15 (%o7) -- an indirect call.
100: */
101: addarc(parentp, &indirectchild, 0L);
102: }
103: }