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bfff8b1b | 1 | /* Copyright (C) 2001-2017 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
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9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
4c48b267 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
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16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
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18 | |
19 | #include <errno.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <sys/profil.h> | |
23 | ||
24 | #include <bits/wordsize.h> | |
25 | ||
26 | #define NELEMS(a) (sizeof (a)/sizeof ((a)[0])) | |
27 | ||
28 | size_t taddr[] = | |
29 | { | |
30 | 0x00001000, /* elf32/hppa */ | |
31 | 0x08048000, /* Linux elf32/x86 */ | |
32 | 0x80000000, /* Linux elf32/m68k */ | |
33 | 0x00400000, /* Linux elf32/mips */ | |
34 | 0x01800000, /* Linux elf32/ppc */ | |
35 | 0x00010000 /* Linux elf32/sparc */ | |
36 | #if __WORDSIZE > 32 | |
37 | , | |
38 | 0x4000000000000000, /* Linux elf64/ia64 */ | |
39 | 0x0000000120000000, /* Linux elf64/alpha */ | |
40 | 0x4000000000001000, /* elf64/hppa */ | |
41 | 0x0000000100000000 /* Linux elf64/sparc */ | |
42 | #endif | |
43 | }; | |
44 | ||
45 | unsigned int buf[NELEMS (taddr)][0x10000 / sizeof (int)]; | |
46 | unsigned int bshort[5][0x100 / sizeof (int)]; | |
47 | unsigned int blong[1][0x1000 / sizeof (int)]; | |
48 | unsigned int vlong[1][0x2000 / sizeof (int)]; | |
49 | ||
7d281611 | 50 | static long int |
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51 | fac (long int n) |
52 | { | |
53 | if (n == 0) | |
54 | return 1; | |
55 | return n * fac (n - 1); | |
56 | } | |
57 | ||
58 | int | |
59 | main (int argc, char **argv) | |
60 | { | |
61 | unsigned int ovfl = 0, profcnt = 0; | |
62 | struct timeval tv, start; | |
63 | struct prof prof[32]; | |
64 | double t_tick, delta; | |
65 | long int sum = 0; | |
66 | int i, j; | |
67 | ||
68 | for (i = 0; i < NELEMS (taddr); ++i) | |
69 | { | |
70 | prof[profcnt].pr_base = buf[i]; | |
71 | prof[profcnt].pr_size = sizeof (buf[i]); | |
72 | prof[profcnt].pr_off = taddr[i]; | |
73 | prof[profcnt].pr_scale = 0x10000; | |
74 | ++profcnt; | |
75 | } | |
76 | ||
77 | prof[profcnt].pr_base = blong[0]; | |
78 | prof[profcnt].pr_size = sizeof (blong[0]); | |
79 | prof[profcnt].pr_off = 0x80001000; | |
80 | prof[profcnt].pr_scale = 0x10000; | |
81 | ++profcnt; | |
82 | ||
83 | prof[profcnt].pr_base = bshort[0]; | |
84 | prof[profcnt].pr_size = sizeof (bshort[0]); | |
85 | prof[profcnt].pr_off = 0x80000080; | |
86 | prof[profcnt].pr_scale = 0x10000; | |
87 | ++profcnt; | |
88 | ||
89 | prof[profcnt].pr_base = bshort[1]; | |
90 | prof[profcnt].pr_size = sizeof (bshort[1]); | |
91 | prof[profcnt].pr_off = 0x80000f80; | |
92 | prof[profcnt].pr_scale = 0x10000; | |
93 | ++profcnt; | |
94 | ||
95 | prof[profcnt].pr_base = bshort[2]; | |
96 | prof[profcnt].pr_size = sizeof (bshort[2]); | |
97 | prof[profcnt].pr_off = 0x80001080; | |
98 | prof[profcnt].pr_scale = 0x10000; | |
99 | ++profcnt; | |
100 | ||
101 | prof[profcnt].pr_base = bshort[3]; | |
102 | prof[profcnt].pr_size = sizeof (bshort[3]); | |
103 | prof[profcnt].pr_off = 0x80001f80; | |
104 | prof[profcnt].pr_scale = 0x10000; | |
105 | ++profcnt; | |
106 | ||
107 | prof[profcnt].pr_base = bshort[4]; | |
108 | prof[profcnt].pr_size = sizeof (bshort[4]); | |
109 | prof[profcnt].pr_off = 0x80002080; | |
110 | prof[profcnt].pr_scale = 0x10000; | |
111 | ++profcnt; | |
112 | ||
113 | prof[profcnt].pr_base = vlong[0]; | |
114 | prof[profcnt].pr_size = sizeof (vlong[0]); | |
115 | prof[profcnt].pr_off = 0x80000080; | |
116 | prof[profcnt].pr_scale = 0x10000; | |
117 | ++profcnt; | |
118 | ||
119 | /* Set up overflow counter (must be last on Irix). */ | |
120 | prof[profcnt].pr_base = &ovfl; | |
121 | prof[profcnt].pr_size = sizeof (ovfl); | |
122 | prof[profcnt].pr_off = 0; | |
123 | prof[profcnt].pr_scale = 2; | |
124 | ++profcnt; | |
125 | ||
126 | /* Turn it on. */ | |
127 | if (sprofil (prof, profcnt, &tv, PROF_UINT) < 0) | |
128 | { | |
129 | if (errno == ENOSYS) | |
130 | exit (0); | |
131 | perror ("sprofil"); | |
132 | exit (1); | |
133 | } | |
134 | ||
135 | t_tick = tv.tv_sec + 1e-6 * tv.tv_usec; | |
136 | printf ("profiling period = %g ms\n", 1e3 * t_tick); | |
137 | ||
138 | gettimeofday (&start, NULL); | |
139 | do | |
140 | { | |
141 | for (i = 0; i < 21; ++i) | |
142 | sum += fac (i); | |
143 | ||
144 | gettimeofday (&tv, NULL); | |
145 | timersub (&tv, &start, &tv); | |
146 | delta = tv.tv_sec + 1e-6 * tv.tv_usec; | |
147 | } | |
148 | while (delta < 1000 * t_tick); | |
149 | ||
150 | printf ("sum = 0x%lx\n", sum); | |
151 | ||
152 | /* Turn it off. */ | |
153 | if (sprofil (NULL, 0, NULL, 0) < 0) | |
154 | { | |
155 | if (errno == ENOSYS) | |
156 | exit (0); | |
157 | perror ("sprofil"); | |
158 | exit (1); | |
159 | } | |
160 | ||
161 | printf ("overflow = %u\n", ovfl); | |
162 | for (i = 0; i < NELEMS (taddr); ++i) | |
163 | for (j = 0; j < 0x10000 / sizeof (int); ++j) | |
164 | if (buf[i][j] != 0) | |
165 | printf ("%0*Zx\t%u\t(buffer %d)\n", | |
166 | (int) (sizeof (size_t) * 2), | |
d347a4ab | 167 | (taddr[i] + ((char *) &buf[i][j] - (char *) &buf[i][0])), |
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168 | buf[i][j], i); |
169 | ||
170 | return 0; | |
171 | } |