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Commit | Line | Data |
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153d511e WD |
1 | /* |
2 | * linux/lib/vsprintf.c | |
3 | * | |
4 | * Copyright (C) 1991, 1992 Linus Torvalds | |
5 | */ | |
6 | ||
7 | /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */ | |
8 | /* | |
9 | * Wirzenius wrote this portably, Torvalds fucked it up :-) | |
3cce8a54 SG |
10 | * |
11 | * from hush: simple_itoa() was lifted from boa-0.93.15 | |
153d511e WD |
12 | */ |
13 | ||
14 | #include <stdarg.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/string.h> | |
17 | #include <linux/ctype.h> | |
a7fd0d9f | 18 | #include <errno.h> |
153d511e WD |
19 | |
20 | #include <common.h> | |
8acdae68 | 21 | #if !defined(CONFIG_PANIC_HANG) |
153d511e | 22 | #include <command.h> |
153d511e WD |
23 | #endif |
24 | ||
47910506 | 25 | #include <div64.h> |
47910506 DB |
26 | #define noinline __attribute__((noinline)) |
27 | ||
046a37bd SR |
28 | /* some reluctance to put this into a new limits.h, so it is here */ |
29 | #define INT_MAX ((int)(~0U>>1)) | |
30 | ||
8acdae68 DS |
31 | unsigned long simple_strtoul(const char *cp, char **endp, |
32 | unsigned int base) | |
153d511e | 33 | { |
8acdae68 DS |
34 | unsigned long result = 0; |
35 | unsigned long value; | |
153d511e WD |
36 | |
37 | if (*cp == '0') { | |
38 | cp++; | |
39 | if ((*cp == 'x') && isxdigit(cp[1])) { | |
40 | base = 16; | |
41 | cp++; | |
42 | } | |
8acdae68 DS |
43 | |
44 | if (!base) | |
153d511e | 45 | base = 8; |
153d511e | 46 | } |
8acdae68 DS |
47 | |
48 | if (!base) | |
153d511e | 49 | base = 10; |
8acdae68 | 50 | |
153d511e WD |
51 | while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp) |
52 | ? toupper(*cp) : *cp)-'A'+10) < base) { | |
53 | result = result*base + value; | |
54 | cp++; | |
55 | } | |
8acdae68 | 56 | |
153d511e WD |
57 | if (endp) |
58 | *endp = (char *)cp; | |
8acdae68 | 59 | |
153d511e WD |
60 | return result; |
61 | } | |
62 | ||
a7fd0d9f HS |
63 | int strict_strtoul(const char *cp, unsigned int base, unsigned long *res) |
64 | { | |
65 | char *tail; | |
66 | unsigned long val; | |
67 | size_t len; | |
68 | ||
69 | *res = 0; | |
70 | len = strlen(cp); | |
71 | if (len == 0) | |
72 | return -EINVAL; | |
73 | ||
74 | val = simple_strtoul(cp, &tail, base); | |
75 | if (tail == cp) | |
76 | return -EINVAL; | |
77 | ||
78 | if ((*tail == '\0') || | |
79 | ((len == (size_t)(tail - cp) + 1) && (*tail == '\n'))) { | |
80 | *res = val; | |
81 | return 0; | |
82 | } | |
83 | ||
84 | return -EINVAL; | |
85 | } | |
86 | ||
8acdae68 | 87 | long simple_strtol(const char *cp, char **endp, unsigned int base) |
153d511e | 88 | { |
8acdae68 DS |
89 | if (*cp == '-') |
90 | return -simple_strtoul(cp + 1, endp, base); | |
91 | ||
92 | return simple_strtoul(cp, endp, base); | |
153d511e WD |
93 | } |
94 | ||
3ec44111 | 95 | unsigned long ustrtoul(const char *cp, char **endp, unsigned int base) |
7e6ee7ad KP |
96 | { |
97 | unsigned long result = simple_strtoul(cp, endp, base); | |
98 | switch (**endp) { | |
8acdae68 | 99 | case 'G': |
7e6ee7ad KP |
100 | result *= 1024; |
101 | /* fall through */ | |
102 | case 'M': | |
103 | result *= 1024; | |
104 | /* fall through */ | |
105 | case 'K': | |
106 | case 'k': | |
107 | result *= 1024; | |
108 | if ((*endp)[1] == 'i') { | |
109 | if ((*endp)[2] == 'B') | |
110 | (*endp) += 3; | |
111 | else | |
112 | (*endp) += 2; | |
113 | } | |
114 | } | |
115 | return result; | |
116 | } | |
117 | ||
7df54d31 PW |
118 | unsigned long long ustrtoull(const char *cp, char **endp, unsigned int base) |
119 | { | |
120 | unsigned long long result = simple_strtoull(cp, endp, base); | |
121 | switch (**endp) { | |
122 | case 'G': | |
123 | result *= 1024; | |
124 | /* fall through */ | |
125 | case 'M': | |
126 | result *= 1024; | |
127 | /* fall through */ | |
128 | case 'K': | |
129 | case 'k': | |
130 | result *= 1024; | |
131 | if ((*endp)[1] == 'i') { | |
132 | if ((*endp)[2] == 'B') | |
133 | (*endp) += 3; | |
134 | else | |
135 | (*endp) += 2; | |
136 | } | |
137 | } | |
138 | return result; | |
139 | } | |
140 | ||
8acdae68 DS |
141 | unsigned long long simple_strtoull(const char *cp, char **endp, |
142 | unsigned int base) | |
c40b2956 WD |
143 | { |
144 | unsigned long long result = 0, value; | |
145 | ||
146 | if (*cp == '0') { | |
147 | cp++; | |
8acdae68 | 148 | if ((*cp == 'x') && isxdigit(cp[1])) { |
c40b2956 WD |
149 | base = 16; |
150 | cp++; | |
151 | } | |
8acdae68 DS |
152 | |
153 | if (!base) | |
c40b2956 | 154 | base = 8; |
c40b2956 | 155 | } |
8acdae68 DS |
156 | |
157 | if (!base) | |
c40b2956 | 158 | base = 10; |
8acdae68 DS |
159 | |
160 | while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp - '0' | |
161 | : (islower(*cp) ? toupper(*cp) : *cp) - 'A' + 10) < base) { | |
c40b2956 WD |
162 | result = result * base + value; |
163 | cp++; | |
164 | } | |
8acdae68 | 165 | |
c40b2956 WD |
166 | if (endp) |
167 | *endp = (char *) cp; | |
8acdae68 | 168 | |
c40b2956 WD |
169 | return result; |
170 | } | |
c40b2956 | 171 | |
153d511e WD |
172 | /* we use this so that we can do without the ctype library */ |
173 | #define is_digit(c) ((c) >= '0' && (c) <= '9') | |
174 | ||
175 | static int skip_atoi(const char **s) | |
176 | { | |
8acdae68 | 177 | int i = 0; |
153d511e WD |
178 | |
179 | while (is_digit(**s)) | |
8acdae68 DS |
180 | i = i * 10 + *((*s)++) - '0'; |
181 | ||
153d511e WD |
182 | return i; |
183 | } | |
184 | ||
6c6166f5 MF |
185 | /* Decimal conversion is by far the most typical, and is used |
186 | * for /proc and /sys data. This directly impacts e.g. top performance | |
187 | * with many processes running. We optimize it for speed | |
188 | * using code from | |
189 | * http://www.cs.uiowa.edu/~jones/bcd/decimal.html | |
190 | * (with permission from the author, Douglas W. Jones). */ | |
191 | ||
192 | /* Formats correctly any integer in [0,99999]. | |
193 | * Outputs from one to five digits depending on input. | |
194 | * On i386 gcc 4.1.2 -O2: ~250 bytes of code. */ | |
8acdae68 | 195 | static char *put_dec_trunc(char *buf, unsigned q) |
6c6166f5 MF |
196 | { |
197 | unsigned d3, d2, d1, d0; | |
198 | d1 = (q>>4) & 0xf; | |
199 | d2 = (q>>8) & 0xf; | |
200 | d3 = (q>>12); | |
201 | ||
202 | d0 = 6*(d3 + d2 + d1) + (q & 0xf); | |
203 | q = (d0 * 0xcd) >> 11; | |
204 | d0 = d0 - 10*q; | |
205 | *buf++ = d0 + '0'; /* least significant digit */ | |
206 | d1 = q + 9*d3 + 5*d2 + d1; | |
207 | if (d1 != 0) { | |
208 | q = (d1 * 0xcd) >> 11; | |
209 | d1 = d1 - 10*q; | |
210 | *buf++ = d1 + '0'; /* next digit */ | |
211 | ||
212 | d2 = q + 2*d2; | |
213 | if ((d2 != 0) || (d3 != 0)) { | |
214 | q = (d2 * 0xd) >> 7; | |
215 | d2 = d2 - 10*q; | |
216 | *buf++ = d2 + '0'; /* next digit */ | |
217 | ||
218 | d3 = q + 4*d3; | |
219 | if (d3 != 0) { | |
220 | q = (d3 * 0xcd) >> 11; | |
221 | d3 = d3 - 10*q; | |
222 | *buf++ = d3 + '0'; /* next digit */ | |
223 | if (q != 0) | |
8acdae68 | 224 | *buf++ = q + '0'; /* most sign. digit */ |
6c6166f5 MF |
225 | } |
226 | } | |
227 | } | |
228 | return buf; | |
229 | } | |
230 | /* Same with if's removed. Always emits five digits */ | |
8acdae68 | 231 | static char *put_dec_full(char *buf, unsigned q) |
6c6166f5 MF |
232 | { |
233 | /* BTW, if q is in [0,9999], 8-bit ints will be enough, */ | |
234 | /* but anyway, gcc produces better code with full-sized ints */ | |
235 | unsigned d3, d2, d1, d0; | |
236 | d1 = (q>>4) & 0xf; | |
237 | d2 = (q>>8) & 0xf; | |
238 | d3 = (q>>12); | |
239 | ||
c0a14aed WD |
240 | /* |
241 | * Possible ways to approx. divide by 10 | |
242 | * gcc -O2 replaces multiply with shifts and adds | |
243 | * (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386) | |
244 | * (x * 0x67) >> 10: 1100111 | |
245 | * (x * 0x34) >> 9: 110100 - same | |
246 | * (x * 0x1a) >> 8: 11010 - same | |
247 | * (x * 0x0d) >> 7: 1101 - same, shortest code (on i386) | |
248 | */ | |
6c6166f5 MF |
249 | |
250 | d0 = 6*(d3 + d2 + d1) + (q & 0xf); | |
251 | q = (d0 * 0xcd) >> 11; | |
252 | d0 = d0 - 10*q; | |
253 | *buf++ = d0 + '0'; | |
254 | d1 = q + 9*d3 + 5*d2 + d1; | |
255 | q = (d1 * 0xcd) >> 11; | |
256 | d1 = d1 - 10*q; | |
257 | *buf++ = d1 + '0'; | |
258 | ||
259 | d2 = q + 2*d2; | |
260 | q = (d2 * 0xd) >> 7; | |
261 | d2 = d2 - 10*q; | |
262 | *buf++ = d2 + '0'; | |
263 | ||
264 | d3 = q + 4*d3; | |
265 | q = (d3 * 0xcd) >> 11; /* - shorter code */ | |
266 | /* q = (d3 * 0x67) >> 10; - would also work */ | |
267 | d3 = d3 - 10*q; | |
268 | *buf++ = d3 + '0'; | |
269 | *buf++ = q + '0'; | |
270 | return buf; | |
271 | } | |
272 | /* No inlining helps gcc to use registers better */ | |
7b64f66c | 273 | static noinline char *put_dec(char *buf, u64 num) |
6c6166f5 MF |
274 | { |
275 | while (1) { | |
276 | unsigned rem; | |
277 | if (num < 100000) | |
278 | return put_dec_trunc(buf, num); | |
279 | rem = do_div(num, 100000); | |
280 | buf = put_dec_full(buf, rem); | |
281 | } | |
282 | } | |
283 | ||
153d511e WD |
284 | #define ZEROPAD 1 /* pad with zero */ |
285 | #define SIGN 2 /* unsigned/signed long */ | |
286 | #define PLUS 4 /* show plus */ | |
287 | #define SPACE 8 /* space if plus */ | |
288 | #define LEFT 16 /* left justified */ | |
6c6166f5 MF |
289 | #define SMALL 32 /* Must be 32 == 0x20 */ |
290 | #define SPECIAL 64 /* 0x */ | |
153d511e | 291 | |
046a37bd SR |
292 | #ifdef CONFIG_SYS_VSNPRINTF |
293 | /* | |
294 | * Macro to add a new character to our output string, but only if it will | |
295 | * fit. The macro moves to the next character position in the output string. | |
296 | */ | |
297 | #define ADDCH(str, ch) do { \ | |
298 | if ((str) < end) \ | |
299 | *(str) = (ch); \ | |
300 | ++str; \ | |
301 | } while (0) | |
302 | #else | |
303 | #define ADDCH(str, ch) (*(str)++ = (ch)) | |
304 | #endif | |
305 | ||
7b64f66c | 306 | static char *number(char *buf, char *end, u64 num, |
046a37bd | 307 | int base, int size, int precision, int type) |
153d511e | 308 | { |
6c6166f5 | 309 | /* we are called with base 8, 10 or 16, only, thus don't need "G..." */ |
8acdae68 | 310 | static const char digits[16] = "0123456789ABCDEF"; |
6c6166f5 MF |
311 | |
312 | char tmp[66]; | |
313 | char sign; | |
314 | char locase; | |
315 | int need_pfx = ((type & SPECIAL) && base != 10); | |
153d511e WD |
316 | int i; |
317 | ||
6c6166f5 MF |
318 | /* locase = 0 or 0x20. ORing digits or letters with 'locase' |
319 | * produces same digits or (maybe lowercased) letters */ | |
320 | locase = (type & SMALL); | |
153d511e WD |
321 | if (type & LEFT) |
322 | type &= ~ZEROPAD; | |
153d511e WD |
323 | sign = 0; |
324 | if (type & SIGN) { | |
7b64f66c | 325 | if ((s64) num < 0) { |
153d511e | 326 | sign = '-'; |
7b64f66c | 327 | num = -(s64) num; |
153d511e WD |
328 | size--; |
329 | } else if (type & PLUS) { | |
330 | sign = '+'; | |
331 | size--; | |
332 | } else if (type & SPACE) { | |
333 | sign = ' '; | |
334 | size--; | |
335 | } | |
336 | } | |
6c6166f5 MF |
337 | if (need_pfx) { |
338 | size--; | |
153d511e | 339 | if (base == 16) |
153d511e WD |
340 | size--; |
341 | } | |
6c6166f5 MF |
342 | |
343 | /* generate full string in tmp[], in reverse order */ | |
153d511e WD |
344 | i = 0; |
345 | if (num == 0) | |
6c6166f5 MF |
346 | tmp[i++] = '0'; |
347 | /* Generic code, for any base: | |
348 | else do { | |
349 | tmp[i++] = (digits[do_div(num,base)] | locase); | |
350 | } while (num != 0); | |
351 | */ | |
352 | else if (base != 10) { /* 8 or 16 */ | |
353 | int mask = base - 1; | |
354 | int shift = 3; | |
8acdae68 DS |
355 | |
356 | if (base == 16) | |
357 | shift = 4; | |
358 | ||
6c6166f5 | 359 | do { |
8acdae68 DS |
360 | tmp[i++] = (digits[((unsigned char)num) & mask] |
361 | | locase); | |
6c6166f5 MF |
362 | num >>= shift; |
363 | } while (num); | |
364 | } else { /* base 10 */ | |
365 | i = put_dec(tmp, num) - tmp; | |
366 | } | |
367 | ||
368 | /* printing 100 using %2d gives "100", not "00" */ | |
153d511e WD |
369 | if (i > precision) |
370 | precision = i; | |
6c6166f5 | 371 | /* leading space padding */ |
153d511e | 372 | size -= precision; |
046a37bd SR |
373 | if (!(type & (ZEROPAD + LEFT))) { |
374 | while (--size >= 0) | |
375 | ADDCH(buf, ' '); | |
376 | } | |
6c6166f5 | 377 | /* sign */ |
153d511e | 378 | if (sign) |
046a37bd | 379 | ADDCH(buf, sign); |
6c6166f5 MF |
380 | /* "0x" / "0" prefix */ |
381 | if (need_pfx) { | |
046a37bd | 382 | ADDCH(buf, '0'); |
6c6166f5 | 383 | if (base == 16) |
046a37bd | 384 | ADDCH(buf, 'X' | locase); |
6c6166f5 MF |
385 | } |
386 | /* zero or space padding */ | |
387 | if (!(type & LEFT)) { | |
388 | char c = (type & ZEROPAD) ? '0' : ' '; | |
046a37bd | 389 | |
6c6166f5 | 390 | while (--size >= 0) |
046a37bd | 391 | ADDCH(buf, c); |
153d511e | 392 | } |
6c6166f5 MF |
393 | /* hmm even more zero padding? */ |
394 | while (i <= --precision) | |
046a37bd | 395 | ADDCH(buf, '0'); |
6c6166f5 MF |
396 | /* actual digits of result */ |
397 | while (--i >= 0) | |
046a37bd | 398 | ADDCH(buf, tmp[i]); |
6c6166f5 MF |
399 | /* trailing space padding */ |
400 | while (--size >= 0) | |
046a37bd | 401 | ADDCH(buf, ' '); |
6c6166f5 | 402 | return buf; |
153d511e WD |
403 | } |
404 | ||
046a37bd SR |
405 | static char *string(char *buf, char *end, char *s, int field_width, |
406 | int precision, int flags) | |
6c6166f5 MF |
407 | { |
408 | int len, i; | |
153d511e | 409 | |
0eb25768 | 410 | if (s == NULL) |
6c6166f5 MF |
411 | s = "<NULL>"; |
412 | ||
413 | len = strnlen(s, precision); | |
414 | ||
415 | if (!(flags & LEFT)) | |
416 | while (len < field_width--) | |
046a37bd | 417 | ADDCH(buf, ' '); |
6c6166f5 | 418 | for (i = 0; i < len; ++i) |
046a37bd | 419 | ADDCH(buf, *s++); |
6c6166f5 | 420 | while (len < field_width--) |
046a37bd | 421 | ADDCH(buf, ' '); |
6c6166f5 MF |
422 | return buf; |
423 | } | |
424 | ||
425 | #ifdef CONFIG_CMD_NET | |
d7b2d9df JH |
426 | static const char hex_asc[] = "0123456789abcdef"; |
427 | #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] | |
428 | #define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] | |
429 | ||
430 | static inline char *pack_hex_byte(char *buf, u8 byte) | |
431 | { | |
432 | *buf++ = hex_asc_hi(byte); | |
433 | *buf++ = hex_asc_lo(byte); | |
434 | return buf; | |
435 | } | |
436 | ||
046a37bd | 437 | static char *mac_address_string(char *buf, char *end, u8 *addr, int field_width, |
6c6166f5 | 438 | int precision, int flags) |
153d511e | 439 | { |
8acdae68 DS |
440 | /* (6 * 2 hex digits), 5 colons and trailing zero */ |
441 | char mac_addr[6 * 3]; | |
6c6166f5 MF |
442 | char *p = mac_addr; |
443 | int i; | |
444 | ||
445 | for (i = 0; i < 6; i++) { | |
446 | p = pack_hex_byte(p, addr[i]); | |
447 | if (!(flags & SPECIAL) && i != 5) | |
448 | *p++ = ':'; | |
449 | } | |
450 | *p = '\0'; | |
451 | ||
046a37bd SR |
452 | return string(buf, end, mac_addr, field_width, precision, |
453 | flags & ~SPECIAL); | |
6c6166f5 MF |
454 | } |
455 | ||
046a37bd | 456 | static char *ip6_addr_string(char *buf, char *end, u8 *addr, int field_width, |
6c6166f5 MF |
457 | int precision, int flags) |
458 | { | |
8acdae68 DS |
459 | /* (8 * 4 hex digits), 7 colons and trailing zero */ |
460 | char ip6_addr[8 * 5]; | |
6c6166f5 MF |
461 | char *p = ip6_addr; |
462 | int i; | |
463 | ||
464 | for (i = 0; i < 8; i++) { | |
465 | p = pack_hex_byte(p, addr[2 * i]); | |
466 | p = pack_hex_byte(p, addr[2 * i + 1]); | |
467 | if (!(flags & SPECIAL) && i != 7) | |
468 | *p++ = ':'; | |
469 | } | |
470 | *p = '\0'; | |
471 | ||
046a37bd SR |
472 | return string(buf, end, ip6_addr, field_width, precision, |
473 | flags & ~SPECIAL); | |
6c6166f5 MF |
474 | } |
475 | ||
046a37bd | 476 | static char *ip4_addr_string(char *buf, char *end, u8 *addr, int field_width, |
6c6166f5 MF |
477 | int precision, int flags) |
478 | { | |
8acdae68 DS |
479 | /* (4 * 3 decimal digits), 3 dots and trailing zero */ |
480 | char ip4_addr[4 * 4]; | |
6c6166f5 MF |
481 | char temp[3]; /* hold each IP quad in reverse order */ |
482 | char *p = ip4_addr; | |
483 | int i, digits; | |
484 | ||
485 | for (i = 0; i < 4; i++) { | |
486 | digits = put_dec_trunc(temp, addr[i]) - temp; | |
487 | /* reverse the digits in the quad */ | |
488 | while (digits--) | |
489 | *p++ = temp[digits]; | |
490 | if (i != 3) | |
491 | *p++ = '.'; | |
492 | } | |
493 | *p = '\0'; | |
494 | ||
046a37bd SR |
495 | return string(buf, end, ip4_addr, field_width, precision, |
496 | flags & ~SPECIAL); | |
6c6166f5 | 497 | } |
c40b2956 | 498 | #endif |
6c6166f5 MF |
499 | |
500 | /* | |
501 | * Show a '%p' thing. A kernel extension is that the '%p' is followed | |
502 | * by an extra set of alphanumeric characters that are extended format | |
503 | * specifiers. | |
504 | * | |
505 | * Right now we handle: | |
506 | * | |
507 | * - 'M' For a 6-byte MAC address, it prints the address in the | |
508 | * usual colon-separated hex notation | |
509 | * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated | |
510 | * decimal for v4 and colon separated network-order 16 bit hex for v6) | |
511 | * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is | |
512 | * currently the same | |
513 | * | |
514 | * Note: The difference between 'S' and 'F' is that on ia64 and ppc64 | |
515 | * function pointers are really function descriptors, which contain a | |
516 | * pointer to the real address. | |
517 | */ | |
046a37bd SR |
518 | static char *pointer(const char *fmt, char *buf, char *end, void *ptr, |
519 | int field_width, int precision, int flags) | |
6c6166f5 | 520 | { |
d266f669 WD |
521 | /* |
522 | * Being a boot loader, we explicitly allow pointers to | |
523 | * (physical) address null. | |
524 | */ | |
525 | #if 0 | |
6c6166f5 | 526 | if (!ptr) |
046a37bd SR |
527 | return string(buf, end, "(null)", field_width, precision, |
528 | flags); | |
d266f669 | 529 | #endif |
6c6166f5 MF |
530 | |
531 | #ifdef CONFIG_CMD_NET | |
532 | switch (*fmt) { | |
533 | case 'm': | |
534 | flags |= SPECIAL; | |
535 | /* Fallthrough */ | |
536 | case 'M': | |
046a37bd SR |
537 | return mac_address_string(buf, end, ptr, field_width, |
538 | precision, flags); | |
6c6166f5 MF |
539 | case 'i': |
540 | flags |= SPECIAL; | |
541 | /* Fallthrough */ | |
542 | case 'I': | |
543 | if (fmt[1] == '6') | |
046a37bd SR |
544 | return ip6_addr_string(buf, end, ptr, field_width, |
545 | precision, flags); | |
6c6166f5 | 546 | if (fmt[1] == '4') |
046a37bd SR |
547 | return ip4_addr_string(buf, end, ptr, field_width, |
548 | precision, flags); | |
6c6166f5 MF |
549 | flags &= ~SPECIAL; |
550 | break; | |
551 | } | |
552 | #endif | |
553 | flags |= SMALL; | |
554 | if (field_width == -1) { | |
555 | field_width = 2*sizeof(void *); | |
556 | flags |= ZEROPAD; | |
557 | } | |
046a37bd SR |
558 | return number(buf, end, (unsigned long)ptr, 16, field_width, |
559 | precision, flags); | |
6c6166f5 MF |
560 | } |
561 | ||
046a37bd SR |
562 | static int vsnprintf_internal(char *buf, size_t size, const char *fmt, |
563 | va_list args) | |
6c6166f5 | 564 | { |
7b64f66c | 565 | u64 num; |
6c6166f5 MF |
566 | int base; |
567 | char *str; | |
153d511e WD |
568 | |
569 | int flags; /* flags to number() */ | |
570 | ||
571 | int field_width; /* width of output field */ | |
572 | int precision; /* min. # of digits for integers; max | |
573 | number of chars for from string */ | |
6c6166f5 MF |
574 | int qualifier; /* 'h', 'l', or 'L' for integer fields */ |
575 | /* 'z' support added 23/7/1999 S.H. */ | |
576 | /* 'z' changed to 'Z' --davidm 1/25/99 */ | |
577 | /* 't' added for ptrdiff_t */ | |
046a37bd | 578 | char *end = buf + size; |
6c6166f5 | 579 | |
046a37bd SR |
580 | #ifdef CONFIG_SYS_VSNPRINTF |
581 | /* Make sure end is always >= buf - do we want this in U-Boot? */ | |
582 | if (end < buf) { | |
583 | end = ((void *)-1); | |
584 | size = end - buf; | |
585 | } | |
586 | #endif | |
6c6166f5 | 587 | str = buf; |
153d511e | 588 | |
6c6166f5 | 589 | for (; *fmt ; ++fmt) { |
153d511e | 590 | if (*fmt != '%') { |
046a37bd | 591 | ADDCH(str, *fmt); |
153d511e WD |
592 | continue; |
593 | } | |
594 | ||
595 | /* process flags */ | |
596 | flags = 0; | |
8acdae68 | 597 | repeat: |
153d511e WD |
598 | ++fmt; /* this also skips first '%' */ |
599 | switch (*fmt) { | |
8acdae68 DS |
600 | case '-': |
601 | flags |= LEFT; | |
602 | goto repeat; | |
603 | case '+': | |
604 | flags |= PLUS; | |
605 | goto repeat; | |
606 | case ' ': | |
607 | flags |= SPACE; | |
608 | goto repeat; | |
609 | case '#': | |
610 | flags |= SPECIAL; | |
611 | goto repeat; | |
612 | case '0': | |
613 | flags |= ZEROPAD; | |
614 | goto repeat; | |
6c6166f5 | 615 | } |
153d511e WD |
616 | |
617 | /* get field width */ | |
618 | field_width = -1; | |
619 | if (is_digit(*fmt)) | |
620 | field_width = skip_atoi(&fmt); | |
621 | else if (*fmt == '*') { | |
622 | ++fmt; | |
623 | /* it's the next argument */ | |
624 | field_width = va_arg(args, int); | |
625 | if (field_width < 0) { | |
626 | field_width = -field_width; | |
627 | flags |= LEFT; | |
628 | } | |
629 | } | |
630 | ||
631 | /* get the precision */ | |
632 | precision = -1; | |
633 | if (*fmt == '.') { | |
634 | ++fmt; | |
635 | if (is_digit(*fmt)) | |
636 | precision = skip_atoi(&fmt); | |
637 | else if (*fmt == '*') { | |
638 | ++fmt; | |
639 | /* it's the next argument */ | |
640 | precision = va_arg(args, int); | |
641 | } | |
642 | if (precision < 0) | |
643 | precision = 0; | |
644 | } | |
645 | ||
646 | /* get the conversion qualifier */ | |
647 | qualifier = -1; | |
f354b73e | 648 | if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || |
6c6166f5 | 649 | *fmt == 'Z' || *fmt == 'z' || *fmt == 't') { |
153d511e | 650 | qualifier = *fmt; |
6c6166f5 MF |
651 | ++fmt; |
652 | if (qualifier == 'l' && *fmt == 'l') { | |
653 | qualifier = 'L'; | |
bf052939 JY |
654 | ++fmt; |
655 | } | |
153d511e WD |
656 | } |
657 | ||
658 | /* default base */ | |
659 | base = 10; | |
660 | ||
661 | switch (*fmt) { | |
662 | case 'c': | |
046a37bd | 663 | if (!(flags & LEFT)) { |
153d511e | 664 | while (--field_width > 0) |
046a37bd SR |
665 | ADDCH(str, ' '); |
666 | } | |
667 | ADDCH(str, (unsigned char) va_arg(args, int)); | |
153d511e | 668 | while (--field_width > 0) |
046a37bd | 669 | ADDCH(str, ' '); |
153d511e WD |
670 | continue; |
671 | ||
672 | case 's': | |
046a37bd SR |
673 | str = string(str, end, va_arg(args, char *), |
674 | field_width, precision, flags); | |
153d511e WD |
675 | continue; |
676 | ||
677 | case 'p': | |
8acdae68 | 678 | str = pointer(fmt + 1, str, end, |
6c6166f5 MF |
679 | va_arg(args, void *), |
680 | field_width, precision, flags); | |
681 | /* Skip all alphanumeric pointer suffixes */ | |
682 | while (isalnum(fmt[1])) | |
683 | fmt++; | |
153d511e WD |
684 | continue; |
685 | ||
153d511e WD |
686 | case 'n': |
687 | if (qualifier == 'l') { | |
8acdae68 | 688 | long *ip = va_arg(args, long *); |
153d511e WD |
689 | *ip = (str - buf); |
690 | } else { | |
8acdae68 | 691 | int *ip = va_arg(args, int *); |
153d511e WD |
692 | *ip = (str - buf); |
693 | } | |
694 | continue; | |
695 | ||
696 | case '%': | |
046a37bd | 697 | ADDCH(str, '%'); |
153d511e WD |
698 | continue; |
699 | ||
700 | /* integer number formats - set up the flags and "break" */ | |
701 | case 'o': | |
702 | base = 8; | |
703 | break; | |
704 | ||
153d511e | 705 | case 'x': |
6c6166f5 MF |
706 | flags |= SMALL; |
707 | case 'X': | |
153d511e WD |
708 | base = 16; |
709 | break; | |
710 | ||
711 | case 'd': | |
712 | case 'i': | |
713 | flags |= SIGN; | |
714 | case 'u': | |
715 | break; | |
716 | ||
717 | default: | |
046a37bd | 718 | ADDCH(str, '%'); |
153d511e | 719 | if (*fmt) |
046a37bd | 720 | ADDCH(str, *fmt); |
153d511e WD |
721 | else |
722 | --fmt; | |
723 | continue; | |
724 | } | |
6c6166f5 | 725 | if (qualifier == 'L') /* "quad" for 64 bit variables */ |
c40b2956 | 726 | num = va_arg(args, unsigned long long); |
4b142feb | 727 | else if (qualifier == 'l') { |
153d511e | 728 | num = va_arg(args, unsigned long); |
6c6166f5 MF |
729 | if (flags & SIGN) |
730 | num = (signed long) num; | |
f354b73e JCPV |
731 | } else if (qualifier == 'Z' || qualifier == 'z') { |
732 | num = va_arg(args, size_t); | |
733 | } else if (qualifier == 't') { | |
734 | num = va_arg(args, ptrdiff_t); | |
735 | } else if (qualifier == 'h') { | |
153d511e WD |
736 | num = (unsigned short) va_arg(args, int); |
737 | if (flags & SIGN) | |
6c6166f5 MF |
738 | num = (signed short) num; |
739 | } else { | |
153d511e | 740 | num = va_arg(args, unsigned int); |
6c6166f5 MF |
741 | if (flags & SIGN) |
742 | num = (signed int) num; | |
743 | } | |
046a37bd SR |
744 | str = number(str, end, num, base, field_width, precision, |
745 | flags); | |
746 | } | |
747 | ||
748 | #ifdef CONFIG_SYS_VSNPRINTF | |
749 | if (size > 0) { | |
750 | ADDCH(str, '\0'); | |
751 | if (str > end) | |
752 | end[-1] = '\0'; | |
686f60f5 | 753 | --str; |
153d511e | 754 | } |
046a37bd | 755 | #else |
153d511e | 756 | *str = '\0'; |
046a37bd SR |
757 | #endif |
758 | /* the trailing null byte doesn't count towards the total */ | |
8acdae68 | 759 | return str - buf; |
153d511e WD |
760 | } |
761 | ||
046a37bd SR |
762 | #ifdef CONFIG_SYS_VSNPRINTF |
763 | int vsnprintf(char *buf, size_t size, const char *fmt, | |
764 | va_list args) | |
765 | { | |
766 | return vsnprintf_internal(buf, size, fmt, args); | |
767 | } | |
768 | ||
046a37bd SR |
769 | int vscnprintf(char *buf, size_t size, const char *fmt, va_list args) |
770 | { | |
771 | int i; | |
772 | ||
773 | i = vsnprintf(buf, size, fmt, args); | |
774 | ||
775 | if (likely(i < size)) | |
776 | return i; | |
777 | if (size != 0) | |
778 | return size - 1; | |
779 | return 0; | |
780 | } | |
781 | ||
046a37bd SR |
782 | int snprintf(char *buf, size_t size, const char *fmt, ...) |
783 | { | |
784 | va_list args; | |
785 | int i; | |
786 | ||
787 | va_start(args, fmt); | |
788 | i = vsnprintf(buf, size, fmt, args); | |
789 | va_end(args); | |
790 | ||
791 | return i; | |
792 | } | |
793 | ||
046a37bd SR |
794 | int scnprintf(char *buf, size_t size, const char *fmt, ...) |
795 | { | |
796 | va_list args; | |
797 | int i; | |
798 | ||
799 | va_start(args, fmt); | |
800 | i = vscnprintf(buf, size, fmt, args); | |
801 | va_end(args); | |
802 | ||
803 | return i; | |
804 | } | |
805 | #endif /* CONFIG_SYS_VSNPRINT */ | |
806 | ||
807 | /** | |
808 | * Format a string and place it in a buffer (va_list version) | |
809 | * | |
810 | * @param buf The buffer to place the result into | |
811 | * @param fmt The format string to use | |
812 | * @param args Arguments for the format string | |
813 | * | |
814 | * The function returns the number of characters written | |
815 | * into @buf. Use vsnprintf() or vscnprintf() in order to avoid | |
816 | * buffer overflows. | |
817 | * | |
818 | * If you're not already dealing with a va_list consider using sprintf(). | |
819 | */ | |
820 | int vsprintf(char *buf, const char *fmt, va_list args) | |
821 | { | |
822 | return vsnprintf_internal(buf, INT_MAX, fmt, args); | |
823 | } | |
824 | ||
8acdae68 | 825 | int sprintf(char *buf, const char *fmt, ...) |
153d511e WD |
826 | { |
827 | va_list args; | |
828 | int i; | |
829 | ||
830 | va_start(args, fmt); | |
8acdae68 | 831 | i = vsprintf(buf, fmt, args); |
153d511e WD |
832 | va_end(args); |
833 | return i; | |
834 | } | |
835 | ||
836 | void panic(const char *fmt, ...) | |
837 | { | |
8acdae68 | 838 | va_list args; |
153d511e | 839 | va_start(args, fmt); |
6dd652fa | 840 | vprintf(fmt, args); |
153d511e WD |
841 | putc('\n'); |
842 | va_end(args); | |
8acdae68 | 843 | #if defined(CONFIG_PANIC_HANG) |
153d511e WD |
844 | hang(); |
845 | #else | |
8acdae68 DS |
846 | udelay(100000); /* allow messages to go out */ |
847 | do_reset(NULL, 0, 0, NULL); | |
153d511e | 848 | #endif |
40e01881 HS |
849 | while (1) |
850 | ; | |
153d511e | 851 | } |
21726a7a SG |
852 | |
853 | void __assert_fail(const char *assertion, const char *file, unsigned line, | |
854 | const char *function) | |
855 | { | |
856 | /* This will not return */ | |
857 | panic("%s:%u: %s: Assertion `%s' failed.", file, line, function, | |
858 | assertion); | |
859 | } | |
3cce8a54 SG |
860 | |
861 | char *simple_itoa(ulong i) | |
862 | { | |
863 | /* 21 digits plus null terminator, good for 64-bit or smaller ints */ | |
864 | static char local[22]; | |
865 | char *p = &local[21]; | |
866 | ||
867 | *p-- = '\0'; | |
868 | do { | |
869 | *p-- = '0' + i % 10; | |
870 | i /= 10; | |
871 | } while (i > 0); | |
872 | return p + 1; | |
873 | } | |
b8bcaa3a SG |
874 | |
875 | /* We don't seem to have %'d in U-Boot */ | |
876 | void print_grouped_ull(unsigned long long int_val, int digits) | |
877 | { | |
878 | char str[21], *s; | |
879 | int grab = 3; | |
880 | ||
881 | digits = (digits + 2) / 3; | |
882 | sprintf(str, "%*llu", digits * 3, int_val); | |
883 | for (s = str; *s; s += grab) { | |
884 | if (s != str) | |
885 | putc(s[-1] != ' ' ? ',' : ' '); | |
886 | printf("%.*s", grab, s); | |
887 | grab = 3; | |
888 | } | |
889 | } |