|
sl@0
|
1 |
/*
|
|
sl@0
|
2 |
* LIBOIL - Library of Optimized Inner Loops
|
|
sl@0
|
3 |
* Copyright (c) 2005 David A. Schleef <ds@schleef.org>
|
|
sl@0
|
4 |
* All rights reserved.
|
|
sl@0
|
5 |
*
|
|
sl@0
|
6 |
* Redistribution and use in source and binary forms, with or without
|
|
sl@0
|
7 |
* modification, are permitted provided that the following conditions
|
|
sl@0
|
8 |
* are met:
|
|
sl@0
|
9 |
* 1. Redistributions of source code must retain the above copyright
|
|
sl@0
|
10 |
* notice, this list of conditions and the following disclaimer.
|
|
sl@0
|
11 |
* 2. Redistributions in binary form must reproduce the above copyright
|
|
sl@0
|
12 |
* notice, this list of conditions and the following disclaimer in the
|
|
sl@0
|
13 |
* documentation and/or other materials provided with the distribution.
|
|
sl@0
|
14 |
*
|
|
sl@0
|
15 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
sl@0
|
16 |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
sl@0
|
17 |
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
sl@0
|
18 |
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
sl@0
|
19 |
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
sl@0
|
20 |
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
sl@0
|
21 |
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
sl@0
|
22 |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
sl@0
|
23 |
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
sl@0
|
24 |
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
sl@0
|
25 |
* POSSIBILITY OF SUCH DAMAGE.
|
|
sl@0
|
26 |
*/
|
|
sl@0
|
27 |
//Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
|
|
sl@0
|
28 |
|
|
sl@0
|
29 |
#ifdef HAVE_CONFIG_H
|
|
sl@0
|
30 |
#include "config.h"
|
|
sl@0
|
31 |
#endif
|
|
sl@0
|
32 |
|
|
sl@0
|
33 |
#include <liboil/liboil.h>
|
|
sl@0
|
34 |
#include <liboil/liboilfunction.h>
|
|
sl@0
|
35 |
#include <liboil/liboilclasses.h>
|
|
sl@0
|
36 |
|
|
sl@0
|
37 |
#ifdef HAVE_UNISTD_H
|
|
sl@0
|
38 |
#include <unistd.h>
|
|
sl@0
|
39 |
#endif
|
|
sl@0
|
40 |
|
|
sl@0
|
41 |
|
|
sl@0
|
42 |
static void
|
|
sl@0
|
43 |
testzero_u8_1 (uint32_t *dest, uint8_t *src1, int n)
|
|
sl@0
|
44 |
{
|
|
sl@0
|
45 |
uint8_t *s = src1;
|
|
sl@0
|
46 |
|
|
sl@0
|
47 |
while(n>0 && (((unsigned long)s)&0x3)) {
|
|
sl@0
|
48 |
if (*s == 0) {
|
|
sl@0
|
49 |
goto foundzero;
|
|
sl@0
|
50 |
}
|
|
sl@0
|
51 |
s++;
|
|
sl@0
|
52 |
n--;
|
|
sl@0
|
53 |
}
|
|
sl@0
|
54 |
while (n>3) {
|
|
sl@0
|
55 |
uint32_t x;
|
|
sl@0
|
56 |
x = *(uint32_t *)s;
|
|
sl@0
|
57 |
if ((x ^ (x - 0x01010101))& 0x80808080) {
|
|
sl@0
|
58 |
int i;
|
|
sl@0
|
59 |
/* there's either a 0x00 or 0x80 byte */
|
|
sl@0
|
60 |
for(i=0;i<4;i++){
|
|
sl@0
|
61 |
if (s[i] == 0) {
|
|
sl@0
|
62 |
s += i;
|
|
sl@0
|
63 |
goto foundzero;
|
|
sl@0
|
64 |
}
|
|
sl@0
|
65 |
}
|
|
sl@0
|
66 |
}
|
|
sl@0
|
67 |
s += 4;
|
|
sl@0
|
68 |
n -= 4;
|
|
sl@0
|
69 |
}
|
|
sl@0
|
70 |
while(n>0) {
|
|
sl@0
|
71 |
if (*s == 0) {
|
|
sl@0
|
72 |
goto foundzero;
|
|
sl@0
|
73 |
}
|
|
sl@0
|
74 |
s++;
|
|
sl@0
|
75 |
n--;
|
|
sl@0
|
76 |
}
|
|
sl@0
|
77 |
|
|
sl@0
|
78 |
dest[0] = n;
|
|
sl@0
|
79 |
foundzero:
|
|
sl@0
|
80 |
dest[0] = s - src1;
|
|
sl@0
|
81 |
}
|
|
sl@0
|
82 |
OIL_DEFINE_IMPL (testzero_u8_1, testzero_u8);
|
|
sl@0
|
83 |
|
|
sl@0
|
84 |
#ifdef HAVE_UNALIGNED_ACCESS
|
|
sl@0
|
85 |
static void
|
|
sl@0
|
86 |
testzero_u8_2 (uint32_t *dest, uint8_t *src1, int n)
|
|
sl@0
|
87 |
{
|
|
sl@0
|
88 |
int i;
|
|
sl@0
|
89 |
|
|
sl@0
|
90 |
for(i=0;i<n-3;i+=4) {
|
|
sl@0
|
91 |
uint32_t x;
|
|
sl@0
|
92 |
x = *(uint32_t *)(src1 + i);
|
|
sl@0
|
93 |
if ((x ^ (x - 0x01010101))& 0x80808080) {
|
|
sl@0
|
94 |
int j;
|
|
sl@0
|
95 |
/* there's either a 0x00 or 0x80 byte */
|
|
sl@0
|
96 |
for(j=0;j<4;j++){
|
|
sl@0
|
97 |
if (src1[i + j] == 0) {
|
|
sl@0
|
98 |
dest[0] = i + j;
|
|
sl@0
|
99 |
return ;
|
|
sl@0
|
100 |
}
|
|
sl@0
|
101 |
}
|
|
sl@0
|
102 |
}
|
|
sl@0
|
103 |
}
|
|
sl@0
|
104 |
for(;i<n;i++){
|
|
sl@0
|
105 |
if (src1[i] == 0) {
|
|
sl@0
|
106 |
dest[0] = i;
|
|
sl@0
|
107 |
return;
|
|
sl@0
|
108 |
}
|
|
sl@0
|
109 |
}
|
|
sl@0
|
110 |
dest[0] = n;
|
|
sl@0
|
111 |
}
|
|
sl@0
|
112 |
OIL_DEFINE_IMPL (testzero_u8_2, testzero_u8);
|
|
sl@0
|
113 |
#endif
|
|
sl@0
|
114 |
|
|
sl@0
|
115 |
|
|
sl@0
|
116 |
|
|
sl@0
|
117 |
#ifdef __SYMBIAN32__
|
|
sl@0
|
118 |
|
|
sl@0
|
119 |
OilFunctionImpl* __oil_function_impl_testzero_u8_1() {
|
|
sl@0
|
120 |
return &_oil_function_impl_testzero_u8_1;
|
|
sl@0
|
121 |
}
|
|
sl@0
|
122 |
#endif
|
|
sl@0
|
123 |
|
|
sl@0
|
124 |
#ifdef HAVE_UNALIGNED_ACCESS
|
|
sl@0
|
125 |
#ifdef __SYMBIAN32__
|
|
sl@0
|
126 |
|
|
sl@0
|
127 |
OilFunctionImpl* __oil_function_impl_testzero_u8_2() {
|
|
sl@0
|
128 |
return &_oil_function_impl_testzero_u8_2;
|
|
sl@0
|
129 |
}
|
|
sl@0
|
130 |
#endif
|
|
sl@0
|
131 |
#endif
|
|
sl@0
|
132 |
|