diff options
Diffstat (limited to 'contrib/netbsd-tests/include/sys/t_bitops.c')
| -rw-r--r-- | contrib/netbsd-tests/include/sys/t_bitops.c | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/include/sys/t_bitops.c b/contrib/netbsd-tests/include/sys/t_bitops.c new file mode 100644 index 000000000000..6bdeb2bda3e6 --- /dev/null +++ b/contrib/netbsd-tests/include/sys/t_bitops.c @@ -0,0 +1,364 @@ +/* $NetBSD: t_bitops.c,v 1.19 2015/03/21 05:50:19 isaki Exp $ */ + +/*- + * Copyright (c) 2011, 2012 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Christos Zoulas and Jukka Ruohonen. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#include <sys/cdefs.h> +__RCSID("$NetBSD: t_bitops.c,v 1.19 2015/03/21 05:50:19 isaki Exp $"); + +#include <atf-c.h> + +#include <sys/cdefs.h> +#include <sys/bitops.h> + +#include <math.h> +#include <inttypes.h> +#include <stdlib.h> +#include <string.h> + +static const struct { + uint32_t val; + int ffs; + int fls; +} bits[] = { + + { 0x00, 0, 0 }, { 0x01, 1, 1 }, { 0x02, 2, 2 }, { 0x03, 1, 2 }, + { 0x04, 3, 3 }, { 0x05, 1, 3 }, { 0x06, 2, 3 }, { 0x07, 1, 3 }, + { 0x08, 4, 4 }, { 0x09, 1, 4 }, { 0x0A, 2, 4 }, { 0x0B, 1, 4 }, + { 0x0C, 3, 4 }, { 0x0D, 1, 4 }, { 0x0E, 2, 4 }, { 0x0F, 1, 4 }, + + { 0x10, 5, 5 }, { 0x11, 1, 5 }, { 0x12, 2, 5 }, { 0x13, 1, 5 }, + { 0x14, 3, 5 }, { 0x15, 1, 5 }, { 0x16, 2, 5 }, { 0x17, 1, 5 }, + { 0x18, 4, 5 }, { 0x19, 1, 5 }, { 0x1A, 2, 5 }, { 0x1B, 1, 5 }, + { 0x1C, 3, 5 }, { 0x1D, 1, 5 }, { 0x1E, 2, 5 }, { 0x1F, 1, 5 }, + + { 0xF0, 5, 8 }, { 0xF1, 1, 8 }, { 0xF2, 2, 8 }, { 0xF3, 1, 8 }, + { 0xF4, 3, 8 }, { 0xF5, 1, 8 }, { 0xF6, 2, 8 }, { 0xF7, 1, 8 }, + { 0xF8, 4, 8 }, { 0xF9, 1, 8 }, { 0xFA, 2, 8 }, { 0xFB, 1, 8 }, + { 0xFC, 3, 8 }, { 0xFD, 1, 8 }, { 0xFE, 2, 8 }, { 0xFF, 1, 8 }, + +}; + +ATF_TC(bitmap_basic); +ATF_TC_HEAD(bitmap_basic, tc) +{ + atf_tc_set_md_var(tc, "descr", "A basic test of __BITMAP_*"); +} + +ATF_TC_BODY(bitmap_basic, tc) +{ + __BITMAP_TYPE(, uint32_t, 65536) bm; + __BITMAP_ZERO(&bm); + + ATF_REQUIRE(__BITMAP_SIZE(uint32_t, 65536) == 2048); + + ATF_REQUIRE(__BITMAP_SHIFT(uint32_t) == 5); + + ATF_REQUIRE(__BITMAP_MASK(uint32_t) == 31); + + for (size_t i = 0; i < 65536; i += 2) + __BITMAP_SET(i, &bm); + + for (size_t i = 0; i < 2048; i++) + ATF_REQUIRE(bm._b[i] == 0x55555555); + + for (size_t i = 0; i < 65536; i++) + if (i & 1) + ATF_REQUIRE(!__BITMAP_ISSET(i, &bm)); + else { + ATF_REQUIRE(__BITMAP_ISSET(i, &bm)); + __BITMAP_CLR(i, &bm); + } + + for (size_t i = 0; i < 65536; i += 2) + ATF_REQUIRE(!__BITMAP_ISSET(i, &bm)); +} + +ATF_TC(fast_divide32); +ATF_TC_HEAD(fast_divide32, tc) +{ + atf_tc_set_md_var(tc, "descr", "A basic test of fast_divide32(3)"); +} + +ATF_TC_BODY(fast_divide32, tc) +{ + uint32_t a, b, q, r, m; + uint8_t i, s1, s2; + + a = 0xFFFF; + b = 0x000F; + + fast_divide32_prepare(b, &m, &s1, &s2); + + q = fast_divide32(a, b, m, s1, s2); + r = fast_remainder32(a, b, m, s1, s2); + + ATF_REQUIRE(q == 0x1111 && r == 0); + + for (i = 1; i < __arraycount(bits); i++) { + + a = bits[i].val; + b = bits[i].ffs; + + fast_divide32_prepare(b, &m, &s1, &s2); + + q = fast_divide32(a, b, m, s1, s2); + r = fast_remainder32(a, b, m, s1, s2); + + ATF_REQUIRE(q == a / b); + ATF_REQUIRE(r == a % b); + } +} + +ATF_TC(ffsfls); +ATF_TC_HEAD(ffsfls, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test ffs32(3)-family for correctness"); +} + +ATF_TC_BODY(ffsfls, tc) +{ + uint8_t i; + + ATF_REQUIRE(ffs32(0) == 0x00); + ATF_REQUIRE(fls32(0) == 0x00); + ATF_REQUIRE(ffs64(0) == 0x00); + ATF_REQUIRE(fls64(0) == 0x00); + + ATF_REQUIRE(ffs32(UINT32_MAX) == 0x01); + ATF_REQUIRE(fls32(UINT32_MAX) == 0x20); + ATF_REQUIRE(ffs64(UINT64_MAX) == 0x01); + ATF_REQUIRE(fls64(UINT64_MAX) == 0x40); + + for (i = 1; i < __arraycount(bits); i++) { + + ATF_REQUIRE(ffs32(bits[i].val) == bits[i].ffs); + ATF_REQUIRE(fls32(bits[i].val) == bits[i].fls); + ATF_REQUIRE(ffs64(bits[i].val) == bits[i].ffs); + ATF_REQUIRE(fls64(bits[i].val) == bits[i].fls); + + ATF_REQUIRE(ffs32(bits[i].val << 1) == bits[i].ffs + 1); + ATF_REQUIRE(fls32(bits[i].val << 1) == bits[i].fls + 1); + ATF_REQUIRE(ffs64(bits[i].val << 1) == bits[i].ffs + 1); + ATF_REQUIRE(fls64(bits[i].val << 1) == bits[i].fls + 1); + + ATF_REQUIRE(ffs32(bits[i].val << 9) == bits[i].ffs + 9); + ATF_REQUIRE(fls32(bits[i].val << 9) == bits[i].fls + 9); + ATF_REQUIRE(ffs64(bits[i].val << 9) == bits[i].ffs + 9); + ATF_REQUIRE(fls64(bits[i].val << 9) == bits[i].fls + 9); + } +} + +ATF_TC(ilog2_32bit); +ATF_TC_HEAD(ilog2_32bit, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test ilog2(3) for 32bit variable"); +} + +ATF_TC_BODY(ilog2_32bit, tc) +{ + int i; + uint32_t x; + + for (i = 0; i < 32; i++) { + x = 1 << i; + ATF_REQUIRE(ilog2(x) == i); + } +} + +ATF_TC(ilog2_64bit); +ATF_TC_HEAD(ilog2_64bit, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test ilog2(3) for 64bit variable"); +} + +ATF_TC_BODY(ilog2_64bit, tc) +{ + int i; + uint64_t x; + + for (i = 0; i < 64; i++) { + x = ((uint64_t)1) << i; + ATF_REQUIRE(ilog2(x) == i); + } +} + +ATF_TC(ilog2_const); +ATF_TC_HEAD(ilog2_const, tc) +{ + atf_tc_set_md_var(tc, "descr", "Test ilog2(3) for constant"); +} + +ATF_TC_BODY(ilog2_const, tc) +{ + /* + * These inlines test __builtin_constant_p() part of ilog2() + * at compile time, so don't change it to loop. PR lib/49745 + */ + ATF_REQUIRE(ilog2(0x0000000000000001ULL) == 0); + ATF_REQUIRE(ilog2(0x0000000000000002ULL) == 1); + ATF_REQUIRE(ilog2(0x0000000000000004ULL) == 2); + ATF_REQUIRE(ilog2(0x0000000000000008ULL) == 3); + ATF_REQUIRE(ilog2(0x0000000000000010ULL) == 4); + ATF_REQUIRE(ilog2(0x0000000000000020ULL) == 5); + ATF_REQUIRE(ilog2(0x0000000000000040ULL) == 6); + ATF_REQUIRE(ilog2(0x0000000000000080ULL) == 7); + ATF_REQUIRE(ilog2(0x0000000000000100ULL) == 8); + ATF_REQUIRE(ilog2(0x0000000000000200ULL) == 9); + ATF_REQUIRE(ilog2(0x0000000000000400ULL) == 10); + ATF_REQUIRE(ilog2(0x0000000000000800ULL) == 11); + ATF_REQUIRE(ilog2(0x0000000000001000ULL) == 12); + ATF_REQUIRE(ilog2(0x0000000000002000ULL) == 13); + ATF_REQUIRE(ilog2(0x0000000000004000ULL) == 14); + ATF_REQUIRE(ilog2(0x0000000000008000ULL) == 15); + ATF_REQUIRE(ilog2(0x0000000000010000ULL) == 16); + ATF_REQUIRE(ilog2(0x0000000000020000ULL) == 17); + ATF_REQUIRE(ilog2(0x0000000000040000ULL) == 18); + ATF_REQUIRE(ilog2(0x0000000000080000ULL) == 19); + ATF_REQUIRE(ilog2(0x0000000000100000ULL) == 20); + ATF_REQUIRE(ilog2(0x0000000000200000ULL) == 21); + ATF_REQUIRE(ilog2(0x0000000000400000ULL) == 22); + ATF_REQUIRE(ilog2(0x0000000000800000ULL) == 23); + ATF_REQUIRE(ilog2(0x0000000001000000ULL) == 24); + ATF_REQUIRE(ilog2(0x0000000002000000ULL) == 25); + ATF_REQUIRE(ilog2(0x0000000004000000ULL) == 26); + ATF_REQUIRE(ilog2(0x0000000008000000ULL) == 27); + ATF_REQUIRE(ilog2(0x0000000010000000ULL) == 28); + ATF_REQUIRE(ilog2(0x0000000020000000ULL) == 29); + ATF_REQUIRE(ilog2(0x0000000040000000ULL) == 30); + ATF_REQUIRE(ilog2(0x0000000080000000ULL) == 31); + ATF_REQUIRE(ilog2(0x0000000100000000ULL) == 32); + ATF_REQUIRE(ilog2(0x0000000200000000ULL) == 33); + ATF_REQUIRE(ilog2(0x0000000400000000ULL) == 34); + ATF_REQUIRE(ilog2(0x0000000800000000ULL) == 35); + ATF_REQUIRE(ilog2(0x0000001000000000ULL) == 36); + ATF_REQUIRE(ilog2(0x0000002000000000ULL) == 37); + ATF_REQUIRE(ilog2(0x0000004000000000ULL) == 38); + ATF_REQUIRE(ilog2(0x0000008000000000ULL) == 39); + ATF_REQUIRE(ilog2(0x0000010000000000ULL) == 40); + ATF_REQUIRE(ilog2(0x0000020000000000ULL) == 41); + ATF_REQUIRE(ilog2(0x0000040000000000ULL) == 42); + ATF_REQUIRE(ilog2(0x0000080000000000ULL) == 43); + ATF_REQUIRE(ilog2(0x0000100000000000ULL) == 44); + ATF_REQUIRE(ilog2(0x0000200000000000ULL) == 45); + ATF_REQUIRE(ilog2(0x0000400000000000ULL) == 46); + ATF_REQUIRE(ilog2(0x0000800000000000ULL) == 47); + ATF_REQUIRE(ilog2(0x0001000000000000ULL) == 48); + ATF_REQUIRE(ilog2(0x0002000000000000ULL) == 49); + ATF_REQUIRE(ilog2(0x0004000000000000ULL) == 50); + ATF_REQUIRE(ilog2(0x0008000000000000ULL) == 51); + ATF_REQUIRE(ilog2(0x0010000000000000ULL) == 52); + ATF_REQUIRE(ilog2(0x0020000000000000ULL) == 53); + ATF_REQUIRE(ilog2(0x0040000000000000ULL) == 54); + ATF_REQUIRE(ilog2(0x0080000000000000ULL) == 55); + ATF_REQUIRE(ilog2(0x0100000000000000ULL) == 56); + ATF_REQUIRE(ilog2(0x0200000000000000ULL) == 57); + ATF_REQUIRE(ilog2(0x0400000000000000ULL) == 58); + ATF_REQUIRE(ilog2(0x0800000000000000ULL) == 59); + ATF_REQUIRE(ilog2(0x1000000000000000ULL) == 60); + ATF_REQUIRE(ilog2(0x2000000000000000ULL) == 61); + ATF_REQUIRE(ilog2(0x4000000000000000ULL) == 62); + ATF_REQUIRE(ilog2(0x8000000000000000ULL) == 63); + + ATF_REQUIRE(ilog2(0x0000000000000003ULL) == 1); + ATF_REQUIRE(ilog2(0x0000000000000007ULL) == 2); + ATF_REQUIRE(ilog2(0x000000000000000fULL) == 3); + ATF_REQUIRE(ilog2(0x000000000000001fULL) == 4); + ATF_REQUIRE(ilog2(0x000000000000003fULL) == 5); + ATF_REQUIRE(ilog2(0x000000000000007fULL) == 6); + ATF_REQUIRE(ilog2(0x00000000000000ffULL) == 7); + ATF_REQUIRE(ilog2(0x00000000000001ffULL) == 8); + ATF_REQUIRE(ilog2(0x00000000000003ffULL) == 9); + ATF_REQUIRE(ilog2(0x00000000000007ffULL) == 10); + ATF_REQUIRE(ilog2(0x0000000000000fffULL) == 11); + ATF_REQUIRE(ilog2(0x0000000000001fffULL) == 12); + ATF_REQUIRE(ilog2(0x0000000000003fffULL) == 13); + ATF_REQUIRE(ilog2(0x0000000000007fffULL) == 14); + ATF_REQUIRE(ilog2(0x000000000000ffffULL) == 15); + ATF_REQUIRE(ilog2(0x000000000001ffffULL) == 16); + ATF_REQUIRE(ilog2(0x000000000003ffffULL) == 17); + ATF_REQUIRE(ilog2(0x000000000007ffffULL) == 18); + ATF_REQUIRE(ilog2(0x00000000000fffffULL) == 19); + ATF_REQUIRE(ilog2(0x00000000001fffffULL) == 20); + ATF_REQUIRE(ilog2(0x00000000003fffffULL) == 21); + ATF_REQUIRE(ilog2(0x00000000007fffffULL) == 22); + ATF_REQUIRE(ilog2(0x0000000000ffffffULL) == 23); + ATF_REQUIRE(ilog2(0x0000000001ffffffULL) == 24); + ATF_REQUIRE(ilog2(0x0000000003ffffffULL) == 25); + ATF_REQUIRE(ilog2(0x0000000007ffffffULL) == 26); + ATF_REQUIRE(ilog2(0x000000000fffffffULL) == 27); + ATF_REQUIRE(ilog2(0x000000001fffffffULL) == 28); + ATF_REQUIRE(ilog2(0x000000003fffffffULL) == 29); + ATF_REQUIRE(ilog2(0x000000007fffffffULL) == 30); + ATF_REQUIRE(ilog2(0x00000000ffffffffULL) == 31); + ATF_REQUIRE(ilog2(0x00000001ffffffffULL) == 32); + ATF_REQUIRE(ilog2(0x00000003ffffffffULL) == 33); + ATF_REQUIRE(ilog2(0x00000007ffffffffULL) == 34); + ATF_REQUIRE(ilog2(0x0000000fffffffffULL) == 35); + ATF_REQUIRE(ilog2(0x0000001fffffffffULL) == 36); + ATF_REQUIRE(ilog2(0x0000003fffffffffULL) == 37); + ATF_REQUIRE(ilog2(0x0000007fffffffffULL) == 38); + ATF_REQUIRE(ilog2(0x000000ffffffffffULL) == 39); + ATF_REQUIRE(ilog2(0x000001ffffffffffULL) == 40); + ATF_REQUIRE(ilog2(0x000003ffffffffffULL) == 41); + ATF_REQUIRE(ilog2(0x000007ffffffffffULL) == 42); + ATF_REQUIRE(ilog2(0x00000fffffffffffULL) == 43); + ATF_REQUIRE(ilog2(0x00001fffffffffffULL) == 44); + ATF_REQUIRE(ilog2(0x00003fffffffffffULL) == 45); + ATF_REQUIRE(ilog2(0x00007fffffffffffULL) == 46); + ATF_REQUIRE(ilog2(0x0000ffffffffffffULL) == 47); + ATF_REQUIRE(ilog2(0x0001ffffffffffffULL) == 48); + ATF_REQUIRE(ilog2(0x0003ffffffffffffULL) == 49); + ATF_REQUIRE(ilog2(0x0007ffffffffffffULL) == 50); + ATF_REQUIRE(ilog2(0x000fffffffffffffULL) == 51); + ATF_REQUIRE(ilog2(0x001fffffffffffffULL) == 52); + ATF_REQUIRE(ilog2(0x003fffffffffffffULL) == 53); + ATF_REQUIRE(ilog2(0x007fffffffffffffULL) == 54); + ATF_REQUIRE(ilog2(0x00ffffffffffffffULL) == 55); + ATF_REQUIRE(ilog2(0x01ffffffffffffffULL) == 56); + ATF_REQUIRE(ilog2(0x03ffffffffffffffULL) == 57); + ATF_REQUIRE(ilog2(0x07ffffffffffffffULL) == 58); + ATF_REQUIRE(ilog2(0x0fffffffffffffffULL) == 59); + ATF_REQUIRE(ilog2(0x1fffffffffffffffULL) == 60); + ATF_REQUIRE(ilog2(0x3fffffffffffffffULL) == 61); + ATF_REQUIRE(ilog2(0x7fffffffffffffffULL) == 62); + ATF_REQUIRE(ilog2(0xffffffffffffffffULL) == 63); +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, bitmap_basic); + ATF_TP_ADD_TC(tp, fast_divide32); + ATF_TP_ADD_TC(tp, ffsfls); + ATF_TP_ADD_TC(tp, ilog2_32bit); + ATF_TP_ADD_TC(tp, ilog2_64bit); + ATF_TP_ADD_TC(tp, ilog2_const); + + return atf_no_error(); +} |