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Introduce helpers.c

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Move some suitable functions there, add it to the Makefile, but leave the
declarations in flash.h for now.

Corresponding to flashrom svn r1819.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Stefan Tauner
2014-06-12 00:04:32 +00:00
parent a60d408a78
commit 6ad6e01e9b
5 changed files with 81 additions and 52 deletions
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72
helpers.c Normal file
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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2009-2010 Carl-Daniel Hailfinger
* Copyright (C) 2013 Stefan Tauner
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "flash.h"
/* Returns the minimum number of bits needed to represent the given address.
* FIXME: use mind-blowing implementation. */
uint32_t address_to_bits(uint32_t addr)
{
unsigned int lzb = 0;
while (((1 << (31 - lzb)) & ~addr) != 0)
lzb++;
return 32 - lzb;
}
int bitcount(unsigned long a)
{
int i = 0;
for (; a != 0; a >>= 1)
if (a & 1)
i++;
return i;
}
int max(int a, int b)
{
return (a > b) ? a : b;
}
int min(int a, int b)
{
return (a < b) ? a : b;
}
char *strcat_realloc(char *dest, const char *src)
{
dest = realloc(dest, strlen(dest) + strlen(src) + 1);
if (!dest) {
msg_gerr("Out of memory!\n");
return NULL;
}
strcat(dest, src);
return dest;
}
void tolower_string(char *str)
{
for (; *str != '\0'; str++)
*str = (char)tolower((unsigned char)*str);
}