blob: f6eae4665fe9c949986d6c62df760998723cae9b [file] [log] [blame]
Stefan Tauner6ad6e012014-06-12 00:04:32 +00001/*
2 * This file is part of the flashrom project.
3 *
4 * Copyright (C) 2009-2010 Carl-Daniel Hailfinger
5 * Copyright (C) 2013 Stefan Tauner
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include <ctype.h>
23#include <stdlib.h>
24#include <string.h>
25#include "flash.h"
26
27/* Returns the minimum number of bits needed to represent the given address.
28 * FIXME: use mind-blowing implementation. */
29uint32_t address_to_bits(uint32_t addr)
30{
31 unsigned int lzb = 0;
32 while (((1 << (31 - lzb)) & ~addr) != 0)
33 lzb++;
34 return 32 - lzb;
35}
36
37int bitcount(unsigned long a)
38{
39 int i = 0;
40 for (; a != 0; a >>= 1)
41 if (a & 1)
42 i++;
43 return i;
44}
45
46int max(int a, int b)
47{
48 return (a > b) ? a : b;
49}
50
51int min(int a, int b)
52{
53 return (a < b) ? a : b;
54}
55
56char *strcat_realloc(char *dest, const char *src)
57{
58 dest = realloc(dest, strlen(dest) + strlen(src) + 1);
59 if (!dest) {
60 msg_gerr("Out of memory!\n");
61 return NULL;
62 }
63 strcat(dest, src);
64 return dest;
65}
66
67void tolower_string(char *str)
68{
69 for (; *str != '\0'; str++)
70 *str = (char)tolower((unsigned char)*str);
71}
72
Stefan Taunerb41d8472014-11-01 22:56:06 +000073/* FIXME: Find a better solution for MinGW. Maybe wrap strtok_s (C11) if it becomes available */
74#ifdef __MINGW32__
75char* strtok_r(char *str, const char *delim, char **nextp)
76{
77 if (str == NULL)
78 str = *nextp;
79
80 str += strspn(str, delim); /* Skip leading delimiters */
81 if (*str == '\0')
82 return NULL;
83
84 char *ret = str;
85 str += strcspn(str, delim); /* Find end of token */
86 if (*str != '\0')
87 *str++ = '\0';
88
89 *nextp = str;
90 return ret;
91}
92#endif
93
Stefan Taunerdc627932015-01-27 18:07:50 +000094/* There is no strnlen in DJGPP */
Stefan Tauner23e10b82016-01-23 16:16:49 +000095#if defined(__DJGPP__) || !defined(HAVE_STRNLEN)
Stefan Taunerdc627932015-01-27 18:07:50 +000096size_t strnlen(const char *str, size_t n)
97{
98 size_t i;
99 for (i = 0; i < n && str[i] != '\0'; i++)
100 ;
101 return i;
102}
103#endif