- str9x flash support (Thanks to Spencer Oliver)
[openocd.git] / src / helper / binarybuffer.c
1 /***************************************************************************
2 * Copyright (C) 2004, 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
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. *
9 * *
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. *
14 * *
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 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include <stdlib.h>
25 #include <string.h>
26
27 #include "types.h"
28 #include "log.h"
29
30 #include "binarybuffer.h"
31
32 int buf_set_u32(u8* buffer, unsigned int first, unsigned int num, u32 value);
33 u32 buf_get_u32(u8* buffer, unsigned int first, unsigned int num);
34 u32 flip_u32(u32 value, unsigned int num);
35
36 const unsigned char bit_reverse_table256[] =
37 {
38 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
39 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
40 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
41 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
42 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
43 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
44 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
45 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
46 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
47 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
48 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
49 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
50 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
51 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
52 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
53 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
54 };
55
56 int buf_set_u32(u8* buffer, unsigned int first, unsigned int num, u32 value)
57 {
58 unsigned int i;
59
60 if (!buffer)
61 return ERROR_INVALID_ARGUMENTS;
62
63 for (i=first; i<first+num; i++)
64 {
65 if (((value >> (i-first))&1) == 1)
66 buffer[i/8] |= 1 << (i%8);
67 else
68 buffer[i/8] &= ~(1 << (i%8));
69 }
70
71 return ERROR_OK;
72 }
73
74 u32 buf_get_u32(u8* buffer, unsigned int first, unsigned int num)
75 {
76 u32 result = 0;
77 unsigned int i;
78
79 if (!buffer)
80 {
81 ERROR("buffer not initialized");
82 return 0;
83 }
84
85 for (i=first; i<first+num; i++)
86 {
87 if (((buffer[i/8]>>(i%8))&1) == 1)
88 result |= 1 << (i-first);
89 }
90
91 return result;
92 }
93
94 u8* buf_cpy(u8 *from, u8 *to, int size)
95 {
96 int num_bytes = CEIL(size, 8);
97 unsigned int i;
98
99 if (from == NULL)
100 return NULL;
101
102 for (i = 0; i < num_bytes; i++)
103 to[i] = from[i];
104
105 return to;
106 }
107
108 int buf_cmp(u8 *buf1, u8 *buf2, int size)
109 {
110 int num_bytes = CEIL(size, 8);
111 int i;
112
113 if (!buf1 || !buf2)
114 return 1;
115
116 for (i = 0; i < num_bytes; i++)
117 {
118 /* last byte */
119 /* mask out bits that don't really belong to the buffer if size isn't a multiple of 8 bits */
120 if ((size % 8) && (i == num_bytes -1 ))
121 {
122 if ((buf1[i] & ((1 << (size % 8)) - 1)) != (buf2[i] & ((1 << (size % 8)) - 1)))
123 return 1;
124 }
125 else
126 {
127 if (buf1[i] != buf2[i])
128 return 1;
129 }
130 }
131
132 return 0;
133 }
134
135 int buf_cmp_mask(u8 *buf1, u8 *buf2, u8 *mask, int size)
136 {
137 int num_bytes = CEIL(size, 8);
138 int i;
139
140 for (i = 0; i < num_bytes; i++)
141 {
142 /* last byte */
143 /* mask out bits that don't really belong to the buffer if size isn't a multiple of 8 bits */
144 if ((size % 8) && (i == num_bytes -1 ))
145 {
146 if (((buf1[i] & ((1 << (size % 8)) - 1)) & ((1 << (size % 8)) - 1)) !=
147 ((buf2[i] & ((1 << (size % 8)) - 1)) & ((1 << (size % 8)) - 1)))
148 return 1;
149 }
150 else
151 {
152 if ((buf1[i] & mask[i]) != (buf2[i] & mask[i]))
153 return 1;
154 }
155 }
156
157 return 0;
158 }
159
160 u8* buf_set_ones(u8 *buf, int count)
161 {
162 int num_bytes = CEIL(count, 8);
163 int i;
164
165 for (i = 0; i < num_bytes; i++)
166 {
167 if (count >= 8)
168 buf[i] = 0xff;
169 else
170 buf[i] = (1 << count) - 1;
171
172 count -= 8;
173 }
174
175 return buf;
176 }
177
178 u8* buf_set_buf(u8 *src, int src_start, u8 *dst, int dst_start, int len)
179 {
180 int src_idx = src_start, dst_idx = dst_start;
181 int i;
182
183 for (i = 0; i < len; i++)
184 {
185 if (((src[src_idx/8] >> (src_idx % 8)) & 1) == 1)
186 dst[dst_idx/8] |= 1 << (dst_idx%8);
187 else
188 dst[dst_idx/8] &= ~(1 << (dst_idx%8));
189 dst_idx++;
190 src_idx++;
191 }
192
193 return dst;
194 }
195
196 u32 flip_u32(u32 value, unsigned int num)
197 {
198 u32 c;
199
200 c = (bit_reverse_table256[value & 0xff] << 24) |
201 (bit_reverse_table256[(value >> 8) & 0xff] << 16) |
202 (bit_reverse_table256[(value >> 16) & 0xff] << 8) |
203 (bit_reverse_table256[(value >> 24) & 0xff]);
204
205 if (num < 32)
206 c = c >> (32 - num);
207
208 return c;
209 }
210
211 int ceil_f_to_u32(float x)
212 {
213 u32 y;
214
215 if (x < 0) /* return zero for negative numbers */
216 return 0;
217
218 y = x; /* cut off fraction */
219
220 if ((x - y) > 0.0) /* if there was a fractional part, increase by one */
221 y++;
222
223 return y;
224 }
225
226 char* buf_to_str(u8 *buf, int buf_len, int radix)
227 {
228 const char *DIGITS = "0123456789abcdef";
229 float factor;
230 char *str;
231 int str_len;
232 int b256_len = CEIL(buf_len, 8);
233 u32 tmp;
234
235 int j; /* base-256 digits */
236 int i; /* output digits (radix) */
237
238 if (radix == 16)
239 {
240 factor = 2.0; /* log(256) / log(16) = 2.0 */
241 }
242 else if (radix == 10)
243 {
244 factor = 2.40824; /* log(256) / log(10) = 2.40824 */
245 }
246 else if (radix == 8)
247 {
248 factor = 2.66667; /* log(256) / log(8) = 2.66667 */
249 }
250 else
251 return NULL;
252
253 str_len = ceil_f_to_u32(CEIL(buf_len, 8) * factor);
254 str = calloc(str_len + 1, 1);
255
256 for (i = b256_len - 1; i >= 0; i--)
257 {
258 tmp = buf[i];
259 if ((i == (buf_len / 8)) && (buf_len % 8))
260 tmp &= (0xff >> (8 - (buf_len % 8)));
261
262 for (j = str_len; j > 0; j--)
263 {
264 tmp += (u32)str[j-1] * 256;
265 str[j-1] = (u8)(tmp % radix);
266 tmp /= radix;
267 }
268 }
269
270 for (j = 0; j < str_len; j++)
271 str[j] = DIGITS[(int)str[j]];
272
273 return str;
274 }
275
276 int str_to_buf(char* str, int str_len, u8 *buf, int buf_len, int radix)
277 {
278 char *charbuf;
279 u32 tmp;
280 float factor;
281 u8 *b256_buf;
282 int b256_len;
283
284 int j; /* base-256 digits */
285 int i; /* input digits (ASCII) */
286
287 if (radix == 0)
288 {
289 /* identify radix, and skip radix-prefix (0, 0x or 0X) */
290 if ((str[0] == '0') && (str[1] && ((str[1] == 'x') || (str[1] == 'X'))))
291 {
292 radix = 16;
293 str += 2;
294 str_len -= 2;
295 }
296 else if ((str[0] == '0') && (str_len != 1))
297 {
298 radix = 8;
299 str += 1;
300 str_len -= 1;
301 }
302 else
303 {
304 radix = 10;
305 }
306 }
307
308 if (radix == 16)
309 factor = 0.5; /* log(16) / log(256) = 0.5 */
310 else if (radix == 10)
311 factor = 0.41524; /* log(10) / log(256) = 0.41524 */
312 else if (radix == 8)
313 factor = 0.375; /* log(8) / log(256) = 0.375 */
314 else
315 return 0;
316
317 /* copy to zero-terminated buffer */
318 charbuf = malloc(str_len + 1);
319 memcpy(charbuf, str, str_len);
320 charbuf[str_len] = '\0';
321
322 /* number of digits in base-256 notation */
323 b256_len = ceil_f_to_u32(str_len * factor);
324 b256_buf = calloc(b256_len, 1);
325
326 /* go through zero terminated buffer */
327 for (i = 0; charbuf[i]; i++)
328 {
329 tmp = charbuf[i];
330 if ((tmp >= '0') && (tmp <= '9'))
331 tmp = (tmp - '0');
332 else if ((tmp >= 'a') && (tmp <= 'f'))
333 tmp = (tmp - 'a' + 10);
334 else if ((tmp >= 'A') && (tmp <= 'F'))
335 tmp = (tmp - 'A' + 10);
336 else continue; /* skip characters other than [0-9,a-f,A-F] */
337
338 if (tmp >= radix)
339 continue; /* skip digits invalid for the current radix */
340
341 for (j = 0; j < b256_len; j++)
342 {
343 tmp += (u32)b256_buf[j] * radix;
344 b256_buf[j] = (u8)(tmp & 0xFF);
345 tmp >>= 8;
346 }
347
348 }
349
350 for (j = 0; j < CEIL(buf_len, 8); j++)
351 buf[j] = b256_buf[j];
352
353 /* mask out bits that don't belong to the buffer */
354 if (buf_len % 8)
355 buf[(buf_len / 8)] &= 0xff >> (8 - (buf_len % 8));
356
357 free(b256_buf);
358 free(charbuf);
359
360 return i;
361 }
362
363 int buf_to_u32_handler(u8 *in_buf, void *priv)
364 {
365 u32 *dest = priv;
366
367 *dest = buf_get_u32(in_buf, 0, 32);
368
369 return ERROR_OK;
370 }