/*************************************************************************** * Copyright (C) 2004, 2005 by Dominic Rath * * Dominic.Rath@gmx.de * * * * 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., * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include "types.h" #include "log.h" #include "binarybuffer.h" int buf_set_u32(u8* buffer, unsigned int first, unsigned int num, u32 value); u32 buf_get_u32(u8* buffer, unsigned int first, unsigned int num); u32 flip_u32(u32 value, unsigned int num); const unsigned char bit_reverse_table256[] = { 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0, 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8, 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4, 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC, 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2, 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA, 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6, 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE, 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1, 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9, 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5, 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD, 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3, 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB, 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7, 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF }; int buf_set_u32(u8* buffer, unsigned int first, unsigned int num, u32 value) { unsigned int i; if (!buffer) return ERROR_INVALID_ARGUMENTS; for (i=first; i> (i-first))&1) == 1) buffer[i/8] |= 1 << (i%8); else buffer[i/8] &= ~(1 << (i%8)); } return ERROR_OK; } u32 buf_get_u32(u8* buffer, unsigned int first, unsigned int num) { u32 result = 0; unsigned int i; if (!buffer) { ERROR("buffer not initialized"); return 0; } for (i=first; i>(i%8))&1) == 1) result |= 1 << (i-first); } return result; } u8* buf_cpy(u8 *from, u8 *to, int size) { int num_bytes = CEIL(size, 8); unsigned int i; if (from == NULL) return NULL; for (i = 0; i < num_bytes; i++) to[i] = from[i]; return to; } int buf_cmp(u8 *buf1, u8 *buf2, int size) { int num_bytes = CEIL(size, 8); int i; if (!buf1 || !buf2) return 1; for (i = 0; i < num_bytes; i++) { /* last byte */ /* mask out bits that don't really belong to the buffer if size isn't a multiple of 8 bits */ if ((size % 8) && (i == num_bytes -1 )) { if ((buf1[i] & ((1 << (size % 8)) - 1)) != (buf2[i] & ((1 << (size % 8)) - 1))) return 1; } else { if (buf1[i] != buf2[i]) return 1; } } return 0; } int buf_cmp_mask(u8 *buf1, u8 *buf2, u8 *mask, int size) { int num_bytes = CEIL(size, 8); int i; for (i = 0; i < num_bytes; i++) { /* last byte */ /* mask out bits that don't really belong to the buffer if size isn't a multiple of 8 bits */ if ((size % 8) && (i == num_bytes -1 )) { if (((buf1[i] & ((1 << (size % 8)) - 1)) & ((1 << (size % 8)) - 1)) != ((buf2[i] & ((1 << (size % 8)) - 1)) & ((1 << (size % 8)) - 1))) return 1; } else { if ((buf1[i] & mask[i]) != (buf2[i] & mask[i])) return 1; } } return 0; } u8* buf_set_ones(u8 *buf, int count) { int num_bytes = CEIL(count, 8); int i; for (i = 0; i < num_bytes; i++) { if (count >= 8) buf[i] = 0xff; else buf[i] = (1 << count) - 1; count -= 8; } return buf; } u8* buf_set_buf(u8 *src, int src_start, u8 *dst, int dst_start, int len) { int src_idx = src_start, dst_idx = dst_start; int i; for (i = 0; i < len; i++) { if (((src[src_idx/8] >> (src_idx % 8)) & 1) == 1) dst[dst_idx/8] |= 1 << (dst_idx%8); else dst[dst_idx/8] &= ~(1 << (dst_idx%8)); dst_idx++; src_idx++; } return dst; } u32 flip_u32(u32 value, unsigned int num) { u32 c; c = (bit_reverse_table256[value & 0xff] << 24) | (bit_reverse_table256[(value >> 8) & 0xff] << 16) | (bit_reverse_table256[(value >> 16) & 0xff] << 8) | (bit_reverse_table256[(value >> 24) & 0xff]); if (num < 32) c = c >> (32 - num); return c; } char* buf_to_char(u8 *buf, int size) { int char_len = CEIL(size, 8) * 2; char *char_buf = malloc(char_len + 1); int i; int bits_left = size; char_buf[char_len] = 0; for (i = 0; i < CEIL(size, 8); i++) { if (bits_left < 8) { buf[i] &= ((1 << bits_left) - 1); } if (((buf[i] & 0x0f) >= 0) && ((buf[i] & 0x0f) <= 9)) char_buf[char_len - 2*i - 1] = '0' + (buf[i] & 0xf); else char_buf[char_len - 2*i - 1] = 'a' + (buf[i] & 0xf) - 10; if (((buf[i] & 0xf0) >> 4 >= 0) && ((buf[i] & 0xf0) >> 4 <= 9)) char_buf[char_len - 2*i - 2] = '0' + ((buf[i] & 0xf0) >> 4); else char_buf[char_len - 2*i - 2] = 'a' + ((buf[i] & 0xf0) >> 4) - 10; } return char_buf; } int char_to_buf(char *buf, int len, u8 *bin_buf, int buf_size) { int bin_len = CEIL(len, 2); int i; if (buf_size < CEIL(bin_len, 8)) return 0; if (len % 2) return 0; for (i = 0; i < strlen(buf); i++) { u32 tmp; sscanf(buf + 2*i, "%2x", &tmp); bin_buf[i] = tmp & 0xff; } return bin_len * 8; } int buf_to_u32_handler(u8 *in_buf, void *priv) { u32 *dest = priv; *dest = buf_get_u32(in_buf, 0, 32); return ERROR_OK; }