1 /***************************************************************************
2 * Copyright (C) 2004, 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
20 #ifndef BINARYBUFFER_H
21 #define BINARYBUFFER_H
25 /* support functions to access arbitrary bits in a byte array
26 * flip_u32 inverses the bit order inside a 32-bit word (31..0 -> 0..31)
29 /* inlining this will help show what fn that is taking time during profiling. */
30 static __inline void buf_set_u32(u8* buffer, unsigned int first, unsigned int num, u32 value)
32 if ((num==32)&&(first==0))
34 buffer[3]=(value>>24)&0xff;
35 buffer[2]=(value>>16)&0xff;
36 buffer[1]=(value>>8)&0xff;
37 buffer[0]=(value>>0)&0xff;
42 for (i=first; i<first+num; i++)
44 if (((value >> (i-first))&1) == 1)
45 buffer[i/8] |= 1 << (i%8);
47 buffer[i/8] &= ~(1 << (i%8));
51 static __inline u32 buf_get_u32(u8* buffer, unsigned int first, unsigned int num)
53 if ((num==32)&&(first==0))
55 return (((u32)buffer[3])<<24)|(((u32)buffer[2])<<16)|(((u32)buffer[1])<<8)|(((u32)buffer[0])<<0);
61 for (i=first; i<first+num; i++)
63 if (((buffer[i/8]>>(i%8))&1) == 1)
64 result |= 1 << (i-first);
71 extern u32 flip_u32(u32 value, unsigned int num);
73 extern int buf_cmp(u8 *buf1, u8 *buf2, int size);
74 extern int buf_cmp_mask(u8 *buf1, u8 *buf2, u8 *mask, int size);
75 extern u8* buf_cpy(u8 *from, u8 *to, int size);
77 extern u8* buf_set_ones(u8 *buf, int count);
78 extern u8* buf_set_buf(u8 *src, int src_start, u8 *dst, int dst_start, int len);
80 extern int str_to_buf(char* str, int len, u8 *bin_buf, int buf_size, int radix);
81 extern char* buf_to_str(u8 *buf, int size, int radix);
84 extern int buf_to_u32_handler(u8 *in_buf, void *priv, struct scan_field_s *field);
86 #define CEIL(m, n) ((m + n - 1) / n)
88 /* read a u32 from a buffer in target memory endianness */
89 static __inline u32 fast_target_buffer_get_u32(u8 *buffer, int little)
92 return le_to_h_u32(buffer);
94 return be_to_h_u32(buffer);
97 #endif /* BINARYBUFFER_H */