From 6ad6e01e9b961fd5b25cc4d69319a7d29f110684 Mon Sep 17 00:00:00 2001 From: Stefan Tauner Date: Thu, 12 Jun 2014 00:04:32 +0000 Subject: Introduce helpers.c 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 Acked-by: Carl-Daniel Hailfinger --- helpers.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 helpers.c (limited to 'helpers.c') diff --git a/helpers.c b/helpers.c new file mode 100644 index 0000000..63fc880 --- /dev/null +++ b/helpers.c @@ -0,0 +1,72 @@ +/* + * 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 +#include +#include +#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); +} + -- cgit v1.1