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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> | |
18 | ||
19 | #include <common.h> | |
274325c5 | 20 | #include <charset.h> |
22ada0c8 | 21 | #include <uuid.h> |
153d511e | 22 | |
47910506 | 23 | #include <div64.h> |
47910506 DB |
24 | #define noinline __attribute__((noinline)) |
25 | ||
153d511e WD |
26 | /* we use this so that we can do without the ctype library */ |
27 | #define is_digit(c) ((c) >= '0' && (c) <= '9') | |
28 | ||
29 | static int skip_atoi(const char **s) | |
30 | { | |
8acdae68 | 31 | int i = 0; |
153d511e WD |
32 | |
33 | while (is_digit(**s)) | |
8acdae68 DS |
34 | i = i * 10 + *((*s)++) - '0'; |
35 | ||
153d511e WD |
36 | return i; |
37 | } | |
38 | ||
6c6166f5 MF |
39 | /* Decimal conversion is by far the most typical, and is used |
40 | * for /proc and /sys data. This directly impacts e.g. top performance | |
41 | * with many processes running. We optimize it for speed | |
42 | * using code from | |
43 | * http://www.cs.uiowa.edu/~jones/bcd/decimal.html | |
44 | * (with permission from the author, Douglas W. Jones). */ | |
45 | ||
46 | /* Formats correctly any integer in [0,99999]. | |
47 | * Outputs from one to five digits depending on input. | |
48 | * On i386 gcc 4.1.2 -O2: ~250 bytes of code. */ | |
8acdae68 | 49 | static char *put_dec_trunc(char *buf, unsigned q) |
6c6166f5 MF |
50 | { |
51 | unsigned d3, d2, d1, d0; | |
52 | d1 = (q>>4) & 0xf; | |
53 | d2 = (q>>8) & 0xf; | |
54 | d3 = (q>>12); | |
55 | ||
56 | d0 = 6*(d3 + d2 + d1) + (q & 0xf); | |
57 | q = (d0 * 0xcd) >> 11; | |
58 | d0 = d0 - 10*q; | |
59 | *buf++ = d0 + '0'; /* least significant digit */ | |
60 | d1 = q + 9*d3 + 5*d2 + d1; | |
61 | if (d1 != 0) { | |
62 | q = (d1 * 0xcd) >> 11; | |
63 | d1 = d1 - 10*q; | |
64 | *buf++ = d1 + '0'; /* next digit */ | |
65 | ||
66 | d2 = q + 2*d2; | |
67 | if ((d2 != 0) || (d3 != 0)) { | |
68 | q = (d2 * 0xd) >> 7; | |
69 | d2 = d2 - 10*q; | |
70 | *buf++ = d2 + '0'; /* next digit */ | |
71 | ||
72 | d3 = q + 4*d3; | |
73 | if (d3 != 0) { | |
74 | q = (d3 * 0xcd) >> 11; | |
75 | d3 = d3 - 10*q; | |
76 | *buf++ = d3 + '0'; /* next digit */ | |
77 | if (q != 0) | |
8acdae68 | 78 | *buf++ = q + '0'; /* most sign. digit */ |
6c6166f5 MF |
79 | } |
80 | } | |
81 | } | |
82 | return buf; | |
83 | } | |
84 | /* Same with if's removed. Always emits five digits */ | |
8acdae68 | 85 | static char *put_dec_full(char *buf, unsigned q) |
6c6166f5 MF |
86 | { |
87 | /* BTW, if q is in [0,9999], 8-bit ints will be enough, */ | |
88 | /* but anyway, gcc produces better code with full-sized ints */ | |
89 | unsigned d3, d2, d1, d0; | |
90 | d1 = (q>>4) & 0xf; | |
91 | d2 = (q>>8) & 0xf; | |
92 | d3 = (q>>12); | |
93 | ||
c0a14aed WD |
94 | /* |
95 | * Possible ways to approx. divide by 10 | |
96 | * gcc -O2 replaces multiply with shifts and adds | |
97 | * (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386) | |
98 | * (x * 0x67) >> 10: 1100111 | |
99 | * (x * 0x34) >> 9: 110100 - same | |
100 | * (x * 0x1a) >> 8: 11010 - same | |
101 | * (x * 0x0d) >> 7: 1101 - same, shortest code (on i386) | |
102 | */ | |
6c6166f5 MF |
103 | |
104 | d0 = 6*(d3 + d2 + d1) + (q & 0xf); | |
105 | q = (d0 * 0xcd) >> 11; | |
106 | d0 = d0 - 10*q; | |
107 | *buf++ = d0 + '0'; | |
108 | d1 = q + 9*d3 + 5*d2 + d1; | |
109 | q = (d1 * 0xcd) >> 11; | |
110 | d1 = d1 - 10*q; | |
111 | *buf++ = d1 + '0'; | |
112 | ||
113 | d2 = q + 2*d2; | |
114 | q = (d2 * 0xd) >> 7; | |
115 | d2 = d2 - 10*q; | |
116 | *buf++ = d2 + '0'; | |
117 | ||
118 | d3 = q + 4*d3; | |
119 | q = (d3 * 0xcd) >> 11; /* - shorter code */ | |
120 | /* q = (d3 * 0x67) >> 10; - would also work */ | |
121 | d3 = d3 - 10*q; | |
122 | *buf++ = d3 + '0'; | |
123 | *buf++ = q + '0'; | |
124 | return buf; | |
125 | } | |
126 | /* No inlining helps gcc to use registers better */ | |
6bf67259 | 127 | static noinline char *put_dec(char *buf, uint64_t num) |
6c6166f5 MF |
128 | { |
129 | while (1) { | |
130 | unsigned rem; | |
131 | if (num < 100000) | |
132 | return put_dec_trunc(buf, num); | |
133 | rem = do_div(num, 100000); | |
134 | buf = put_dec_full(buf, rem); | |
135 | } | |
136 | } | |
137 | ||
153d511e WD |
138 | #define ZEROPAD 1 /* pad with zero */ |
139 | #define SIGN 2 /* unsigned/signed long */ | |
140 | #define PLUS 4 /* show plus */ | |
141 | #define SPACE 8 /* space if plus */ | |
142 | #define LEFT 16 /* left justified */ | |
6c6166f5 MF |
143 | #define SMALL 32 /* Must be 32 == 0x20 */ |
144 | #define SPECIAL 64 /* 0x */ | |
153d511e | 145 | |
046a37bd SR |
146 | /* |
147 | * Macro to add a new character to our output string, but only if it will | |
148 | * fit. The macro moves to the next character position in the output string. | |
149 | */ | |
150 | #define ADDCH(str, ch) do { \ | |
151 | if ((str) < end) \ | |
152 | *(str) = (ch); \ | |
153 | ++str; \ | |
154 | } while (0) | |
046a37bd | 155 | |
7b64f66c | 156 | static char *number(char *buf, char *end, u64 num, |
046a37bd | 157 | int base, int size, int precision, int type) |
153d511e | 158 | { |
6c6166f5 | 159 | /* we are called with base 8, 10 or 16, only, thus don't need "G..." */ |
8acdae68 | 160 | static const char digits[16] = "0123456789ABCDEF"; |
6c6166f5 MF |
161 | |
162 | char tmp[66]; | |
163 | char sign; | |
164 | char locase; | |
165 | int need_pfx = ((type & SPECIAL) && base != 10); | |
153d511e WD |
166 | int i; |
167 | ||
6c6166f5 MF |
168 | /* locase = 0 or 0x20. ORing digits or letters with 'locase' |
169 | * produces same digits or (maybe lowercased) letters */ | |
170 | locase = (type & SMALL); | |
153d511e WD |
171 | if (type & LEFT) |
172 | type &= ~ZEROPAD; | |
153d511e WD |
173 | sign = 0; |
174 | if (type & SIGN) { | |
7b64f66c | 175 | if ((s64) num < 0) { |
153d511e | 176 | sign = '-'; |
7b64f66c | 177 | num = -(s64) num; |
153d511e WD |
178 | size--; |
179 | } else if (type & PLUS) { | |
180 | sign = '+'; | |
181 | size--; | |
182 | } else if (type & SPACE) { | |
183 | sign = ' '; | |
184 | size--; | |
185 | } | |
186 | } | |
6c6166f5 MF |
187 | if (need_pfx) { |
188 | size--; | |
153d511e | 189 | if (base == 16) |
153d511e WD |
190 | size--; |
191 | } | |
6c6166f5 MF |
192 | |
193 | /* generate full string in tmp[], in reverse order */ | |
153d511e WD |
194 | i = 0; |
195 | if (num == 0) | |
6c6166f5 MF |
196 | tmp[i++] = '0'; |
197 | /* Generic code, for any base: | |
198 | else do { | |
199 | tmp[i++] = (digits[do_div(num,base)] | locase); | |
200 | } while (num != 0); | |
201 | */ | |
202 | else if (base != 10) { /* 8 or 16 */ | |
203 | int mask = base - 1; | |
204 | int shift = 3; | |
8acdae68 DS |
205 | |
206 | if (base == 16) | |
207 | shift = 4; | |
208 | ||
6c6166f5 | 209 | do { |
8acdae68 DS |
210 | tmp[i++] = (digits[((unsigned char)num) & mask] |
211 | | locase); | |
6c6166f5 MF |
212 | num >>= shift; |
213 | } while (num); | |
214 | } else { /* base 10 */ | |
215 | i = put_dec(tmp, num) - tmp; | |
216 | } | |
217 | ||
218 | /* printing 100 using %2d gives "100", not "00" */ | |
153d511e WD |
219 | if (i > precision) |
220 | precision = i; | |
6c6166f5 | 221 | /* leading space padding */ |
153d511e | 222 | size -= precision; |
046a37bd SR |
223 | if (!(type & (ZEROPAD + LEFT))) { |
224 | while (--size >= 0) | |
225 | ADDCH(buf, ' '); | |
226 | } | |
6c6166f5 | 227 | /* sign */ |
153d511e | 228 | if (sign) |
046a37bd | 229 | ADDCH(buf, sign); |
6c6166f5 MF |
230 | /* "0x" / "0" prefix */ |
231 | if (need_pfx) { | |
046a37bd | 232 | ADDCH(buf, '0'); |
6c6166f5 | 233 | if (base == 16) |
046a37bd | 234 | ADDCH(buf, 'X' | locase); |
6c6166f5 MF |
235 | } |
236 | /* zero or space padding */ | |
237 | if (!(type & LEFT)) { | |
238 | char c = (type & ZEROPAD) ? '0' : ' '; | |
046a37bd | 239 | |
6c6166f5 | 240 | while (--size >= 0) |
046a37bd | 241 | ADDCH(buf, c); |
153d511e | 242 | } |
6c6166f5 MF |
243 | /* hmm even more zero padding? */ |
244 | while (i <= --precision) | |
046a37bd | 245 | ADDCH(buf, '0'); |
6c6166f5 MF |
246 | /* actual digits of result */ |
247 | while (--i >= 0) | |
046a37bd | 248 | ADDCH(buf, tmp[i]); |
6c6166f5 MF |
249 | /* trailing space padding */ |
250 | while (--size >= 0) | |
046a37bd | 251 | ADDCH(buf, ' '); |
6c6166f5 | 252 | return buf; |
153d511e WD |
253 | } |
254 | ||
046a37bd SR |
255 | static char *string(char *buf, char *end, char *s, int field_width, |
256 | int precision, int flags) | |
6c6166f5 MF |
257 | { |
258 | int len, i; | |
153d511e | 259 | |
0eb25768 | 260 | if (s == NULL) |
6c6166f5 MF |
261 | s = "<NULL>"; |
262 | ||
263 | len = strnlen(s, precision); | |
264 | ||
265 | if (!(flags & LEFT)) | |
266 | while (len < field_width--) | |
046a37bd | 267 | ADDCH(buf, ' '); |
6c6166f5 | 268 | for (i = 0; i < len; ++i) |
046a37bd | 269 | ADDCH(buf, *s++); |
6c6166f5 | 270 | while (len < field_width--) |
046a37bd | 271 | ADDCH(buf, ' '); |
6c6166f5 MF |
272 | return buf; |
273 | } | |
274 | ||
274325c5 RC |
275 | static char *string16(char *buf, char *end, u16 *s, int field_width, |
276 | int precision, int flags) | |
277 | { | |
278 | u16 *str = s ? s : L"<NULL>"; | |
279 | int utf16_len = utf16_strnlen(str, precision); | |
280 | u8 utf8[utf16_len * MAX_UTF8_PER_UTF16]; | |
281 | int utf8_len, i; | |
282 | ||
283 | utf8_len = utf16_to_utf8(utf8, str, utf16_len) - utf8; | |
284 | ||
285 | if (!(flags & LEFT)) | |
286 | while (utf8_len < field_width--) | |
287 | ADDCH(buf, ' '); | |
288 | for (i = 0; i < utf8_len; ++i) | |
289 | ADDCH(buf, utf8[i]); | |
290 | while (utf8_len < field_width--) | |
291 | ADDCH(buf, ' '); | |
292 | return buf; | |
293 | } | |
294 | ||
6c6166f5 | 295 | #ifdef CONFIG_CMD_NET |
d7b2d9df JH |
296 | static const char hex_asc[] = "0123456789abcdef"; |
297 | #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] | |
298 | #define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] | |
299 | ||
300 | static inline char *pack_hex_byte(char *buf, u8 byte) | |
301 | { | |
302 | *buf++ = hex_asc_hi(byte); | |
303 | *buf++ = hex_asc_lo(byte); | |
304 | return buf; | |
305 | } | |
306 | ||
046a37bd | 307 | static char *mac_address_string(char *buf, char *end, u8 *addr, int field_width, |
6c6166f5 | 308 | int precision, int flags) |
153d511e | 309 | { |
8acdae68 DS |
310 | /* (6 * 2 hex digits), 5 colons and trailing zero */ |
311 | char mac_addr[6 * 3]; | |
6c6166f5 MF |
312 | char *p = mac_addr; |
313 | int i; | |
314 | ||
315 | for (i = 0; i < 6; i++) { | |
316 | p = pack_hex_byte(p, addr[i]); | |
317 | if (!(flags & SPECIAL) && i != 5) | |
318 | *p++ = ':'; | |
319 | } | |
320 | *p = '\0'; | |
321 | ||
046a37bd SR |
322 | return string(buf, end, mac_addr, field_width, precision, |
323 | flags & ~SPECIAL); | |
6c6166f5 MF |
324 | } |
325 | ||
046a37bd | 326 | static char *ip6_addr_string(char *buf, char *end, u8 *addr, int field_width, |
6c6166f5 MF |
327 | int precision, int flags) |
328 | { | |
8acdae68 DS |
329 | /* (8 * 4 hex digits), 7 colons and trailing zero */ |
330 | char ip6_addr[8 * 5]; | |
6c6166f5 MF |
331 | char *p = ip6_addr; |
332 | int i; | |
333 | ||
334 | for (i = 0; i < 8; i++) { | |
335 | p = pack_hex_byte(p, addr[2 * i]); | |
336 | p = pack_hex_byte(p, addr[2 * i + 1]); | |
337 | if (!(flags & SPECIAL) && i != 7) | |
338 | *p++ = ':'; | |
339 | } | |
340 | *p = '\0'; | |
341 | ||
046a37bd SR |
342 | return string(buf, end, ip6_addr, field_width, precision, |
343 | flags & ~SPECIAL); | |
6c6166f5 MF |
344 | } |
345 | ||
046a37bd | 346 | static char *ip4_addr_string(char *buf, char *end, u8 *addr, int field_width, |
6c6166f5 MF |
347 | int precision, int flags) |
348 | { | |
8acdae68 DS |
349 | /* (4 * 3 decimal digits), 3 dots and trailing zero */ |
350 | char ip4_addr[4 * 4]; | |
6c6166f5 MF |
351 | char temp[3]; /* hold each IP quad in reverse order */ |
352 | char *p = ip4_addr; | |
353 | int i, digits; | |
354 | ||
355 | for (i = 0; i < 4; i++) { | |
356 | digits = put_dec_trunc(temp, addr[i]) - temp; | |
357 | /* reverse the digits in the quad */ | |
358 | while (digits--) | |
359 | *p++ = temp[digits]; | |
360 | if (i != 3) | |
361 | *p++ = '.'; | |
362 | } | |
363 | *p = '\0'; | |
364 | ||
046a37bd SR |
365 | return string(buf, end, ip4_addr, field_width, precision, |
366 | flags & ~SPECIAL); | |
6c6166f5 | 367 | } |
c40b2956 | 368 | #endif |
6c6166f5 | 369 | |
22ada0c8 RC |
370 | #ifdef CONFIG_LIB_UUID |
371 | /* | |
372 | * This works (roughly) the same way as linux's, but we currently always | |
373 | * print lower-case (ie. we just keep %pUB and %pUL for compat with linux), | |
374 | * mostly just because that is what uuid_bin_to_str() supports. | |
375 | * | |
376 | * %pUb: 01020304-0506-0708-090a-0b0c0d0e0f10 | |
377 | * %pUl: 04030201-0605-0807-090a-0b0c0d0e0f10 | |
378 | */ | |
379 | static char *uuid_string(char *buf, char *end, u8 *addr, int field_width, | |
380 | int precision, int flags, const char *fmt) | |
381 | { | |
382 | char uuid[UUID_STR_LEN + 1]; | |
383 | int str_format = UUID_STR_FORMAT_STD; | |
384 | ||
385 | switch (*(++fmt)) { | |
386 | case 'L': | |
387 | case 'l': | |
388 | str_format = UUID_STR_FORMAT_GUID; | |
389 | break; | |
390 | case 'B': | |
391 | case 'b': | |
392 | /* this is the default */ | |
393 | break; | |
394 | default: | |
395 | break; | |
396 | } | |
397 | ||
398 | uuid_bin_to_str(addr, uuid, str_format); | |
399 | ||
400 | return string(buf, end, uuid, field_width, precision, flags); | |
401 | } | |
402 | #endif | |
403 | ||
6c6166f5 MF |
404 | /* |
405 | * Show a '%p' thing. A kernel extension is that the '%p' is followed | |
406 | * by an extra set of alphanumeric characters that are extended format | |
407 | * specifiers. | |
408 | * | |
409 | * Right now we handle: | |
410 | * | |
411 | * - 'M' For a 6-byte MAC address, it prints the address in the | |
412 | * usual colon-separated hex notation | |
413 | * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated | |
414 | * decimal for v4 and colon separated network-order 16 bit hex for v6) | |
415 | * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is | |
416 | * currently the same | |
417 | * | |
418 | * Note: The difference between 'S' and 'F' is that on ia64 and ppc64 | |
419 | * function pointers are really function descriptors, which contain a | |
420 | * pointer to the real address. | |
421 | */ | |
046a37bd SR |
422 | static char *pointer(const char *fmt, char *buf, char *end, void *ptr, |
423 | int field_width, int precision, int flags) | |
6c6166f5 | 424 | { |
1eebd14b TR |
425 | u64 num = (uintptr_t)ptr; |
426 | ||
d266f669 WD |
427 | /* |
428 | * Being a boot loader, we explicitly allow pointers to | |
429 | * (physical) address null. | |
430 | */ | |
431 | #if 0 | |
6c6166f5 | 432 | if (!ptr) |
046a37bd SR |
433 | return string(buf, end, "(null)", field_width, precision, |
434 | flags); | |
d266f669 | 435 | #endif |
6c6166f5 | 436 | |
6c6166f5 | 437 | switch (*fmt) { |
22ada0c8 | 438 | #ifdef CONFIG_CMD_NET |
1eebd14b TR |
439 | case 'a': |
440 | flags |= SPECIAL | ZEROPAD; | |
441 | ||
442 | switch (fmt[1]) { | |
443 | case 'p': | |
444 | default: | |
445 | field_width = sizeof(phys_addr_t) * 2 + 2; | |
446 | num = *(phys_addr_t *)ptr; | |
447 | break; | |
448 | } | |
449 | break; | |
6c6166f5 MF |
450 | case 'm': |
451 | flags |= SPECIAL; | |
452 | /* Fallthrough */ | |
453 | case 'M': | |
046a37bd SR |
454 | return mac_address_string(buf, end, ptr, field_width, |
455 | precision, flags); | |
6c6166f5 MF |
456 | case 'i': |
457 | flags |= SPECIAL; | |
458 | /* Fallthrough */ | |
459 | case 'I': | |
460 | if (fmt[1] == '6') | |
046a37bd SR |
461 | return ip6_addr_string(buf, end, ptr, field_width, |
462 | precision, flags); | |
6c6166f5 | 463 | if (fmt[1] == '4') |
046a37bd SR |
464 | return ip4_addr_string(buf, end, ptr, field_width, |
465 | precision, flags); | |
6c6166f5 MF |
466 | flags &= ~SPECIAL; |
467 | break; | |
6c6166f5 | 468 | #endif |
22ada0c8 RC |
469 | #ifdef CONFIG_LIB_UUID |
470 | case 'U': | |
471 | return uuid_string(buf, end, ptr, field_width, precision, | |
472 | flags, fmt); | |
473 | #endif | |
474 | default: | |
475 | break; | |
476 | } | |
6c6166f5 MF |
477 | flags |= SMALL; |
478 | if (field_width == -1) { | |
479 | field_width = 2*sizeof(void *); | |
480 | flags |= ZEROPAD; | |
481 | } | |
1eebd14b | 482 | return number(buf, end, num, 16, field_width, precision, flags); |
6c6166f5 MF |
483 | } |
484 | ||
046a37bd SR |
485 | static int vsnprintf_internal(char *buf, size_t size, const char *fmt, |
486 | va_list args) | |
6c6166f5 | 487 | { |
7b64f66c | 488 | u64 num; |
6c6166f5 MF |
489 | int base; |
490 | char *str; | |
153d511e WD |
491 | |
492 | int flags; /* flags to number() */ | |
493 | ||
494 | int field_width; /* width of output field */ | |
495 | int precision; /* min. # of digits for integers; max | |
496 | number of chars for from string */ | |
6c6166f5 MF |
497 | int qualifier; /* 'h', 'l', or 'L' for integer fields */ |
498 | /* 'z' support added 23/7/1999 S.H. */ | |
499 | /* 'z' changed to 'Z' --davidm 1/25/99 */ | |
500 | /* 't' added for ptrdiff_t */ | |
046a37bd | 501 | char *end = buf + size; |
6c6166f5 | 502 | |
046a37bd SR |
503 | /* Make sure end is always >= buf - do we want this in U-Boot? */ |
504 | if (end < buf) { | |
505 | end = ((void *)-1); | |
506 | size = end - buf; | |
507 | } | |
6c6166f5 | 508 | str = buf; |
153d511e | 509 | |
6c6166f5 | 510 | for (; *fmt ; ++fmt) { |
153d511e | 511 | if (*fmt != '%') { |
046a37bd | 512 | ADDCH(str, *fmt); |
153d511e WD |
513 | continue; |
514 | } | |
515 | ||
516 | /* process flags */ | |
517 | flags = 0; | |
8acdae68 | 518 | repeat: |
153d511e WD |
519 | ++fmt; /* this also skips first '%' */ |
520 | switch (*fmt) { | |
8acdae68 DS |
521 | case '-': |
522 | flags |= LEFT; | |
523 | goto repeat; | |
524 | case '+': | |
525 | flags |= PLUS; | |
526 | goto repeat; | |
527 | case ' ': | |
528 | flags |= SPACE; | |
529 | goto repeat; | |
530 | case '#': | |
531 | flags |= SPECIAL; | |
532 | goto repeat; | |
533 | case '0': | |
534 | flags |= ZEROPAD; | |
535 | goto repeat; | |
6c6166f5 | 536 | } |
153d511e WD |
537 | |
538 | /* get field width */ | |
539 | field_width = -1; | |
540 | if (is_digit(*fmt)) | |
541 | field_width = skip_atoi(&fmt); | |
542 | else if (*fmt == '*') { | |
543 | ++fmt; | |
544 | /* it's the next argument */ | |
545 | field_width = va_arg(args, int); | |
546 | if (field_width < 0) { | |
547 | field_width = -field_width; | |
548 | flags |= LEFT; | |
549 | } | |
550 | } | |
551 | ||
552 | /* get the precision */ | |
553 | precision = -1; | |
554 | if (*fmt == '.') { | |
555 | ++fmt; | |
556 | if (is_digit(*fmt)) | |
557 | precision = skip_atoi(&fmt); | |
558 | else if (*fmt == '*') { | |
559 | ++fmt; | |
560 | /* it's the next argument */ | |
561 | precision = va_arg(args, int); | |
562 | } | |
563 | if (precision < 0) | |
564 | precision = 0; | |
565 | } | |
566 | ||
567 | /* get the conversion qualifier */ | |
568 | qualifier = -1; | |
f354b73e | 569 | if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || |
6c6166f5 | 570 | *fmt == 'Z' || *fmt == 'z' || *fmt == 't') { |
153d511e | 571 | qualifier = *fmt; |
6c6166f5 MF |
572 | ++fmt; |
573 | if (qualifier == 'l' && *fmt == 'l') { | |
574 | qualifier = 'L'; | |
bf052939 JY |
575 | ++fmt; |
576 | } | |
153d511e WD |
577 | } |
578 | ||
579 | /* default base */ | |
580 | base = 10; | |
581 | ||
582 | switch (*fmt) { | |
583 | case 'c': | |
046a37bd | 584 | if (!(flags & LEFT)) { |
153d511e | 585 | while (--field_width > 0) |
046a37bd SR |
586 | ADDCH(str, ' '); |
587 | } | |
588 | ADDCH(str, (unsigned char) va_arg(args, int)); | |
153d511e | 589 | while (--field_width > 0) |
046a37bd | 590 | ADDCH(str, ' '); |
153d511e WD |
591 | continue; |
592 | ||
593 | case 's': | |
274325c5 RC |
594 | if (qualifier == 'l' && !IS_ENABLED(CONFIG_SPL_BUILD)) { |
595 | str = string16(str, end, va_arg(args, u16 *), | |
596 | field_width, precision, flags); | |
597 | } else { | |
598 | str = string(str, end, va_arg(args, char *), | |
599 | field_width, precision, flags); | |
600 | } | |
153d511e WD |
601 | continue; |
602 | ||
603 | case 'p': | |
8acdae68 | 604 | str = pointer(fmt + 1, str, end, |
6c6166f5 MF |
605 | va_arg(args, void *), |
606 | field_width, precision, flags); | |
607 | /* Skip all alphanumeric pointer suffixes */ | |
608 | while (isalnum(fmt[1])) | |
609 | fmt++; | |
153d511e WD |
610 | continue; |
611 | ||
153d511e WD |
612 | case 'n': |
613 | if (qualifier == 'l') { | |
8acdae68 | 614 | long *ip = va_arg(args, long *); |
153d511e WD |
615 | *ip = (str - buf); |
616 | } else { | |
8acdae68 | 617 | int *ip = va_arg(args, int *); |
153d511e WD |
618 | *ip = (str - buf); |
619 | } | |
620 | continue; | |
621 | ||
622 | case '%': | |
046a37bd | 623 | ADDCH(str, '%'); |
153d511e WD |
624 | continue; |
625 | ||
626 | /* integer number formats - set up the flags and "break" */ | |
627 | case 'o': | |
628 | base = 8; | |
629 | break; | |
630 | ||
153d511e | 631 | case 'x': |
6c6166f5 MF |
632 | flags |= SMALL; |
633 | case 'X': | |
153d511e WD |
634 | base = 16; |
635 | break; | |
636 | ||
637 | case 'd': | |
638 | case 'i': | |
639 | flags |= SIGN; | |
640 | case 'u': | |
641 | break; | |
642 | ||
643 | default: | |
046a37bd | 644 | ADDCH(str, '%'); |
153d511e | 645 | if (*fmt) |
046a37bd | 646 | ADDCH(str, *fmt); |
153d511e WD |
647 | else |
648 | --fmt; | |
649 | continue; | |
650 | } | |
6c6166f5 | 651 | if (qualifier == 'L') /* "quad" for 64 bit variables */ |
c40b2956 | 652 | num = va_arg(args, unsigned long long); |
4b142feb | 653 | else if (qualifier == 'l') { |
153d511e | 654 | num = va_arg(args, unsigned long); |
6c6166f5 MF |
655 | if (flags & SIGN) |
656 | num = (signed long) num; | |
f354b73e JCPV |
657 | } else if (qualifier == 'Z' || qualifier == 'z') { |
658 | num = va_arg(args, size_t); | |
659 | } else if (qualifier == 't') { | |
660 | num = va_arg(args, ptrdiff_t); | |
661 | } else if (qualifier == 'h') { | |
153d511e WD |
662 | num = (unsigned short) va_arg(args, int); |
663 | if (flags & SIGN) | |
6c6166f5 MF |
664 | num = (signed short) num; |
665 | } else { | |
153d511e | 666 | num = va_arg(args, unsigned int); |
6c6166f5 MF |
667 | if (flags & SIGN) |
668 | num = (signed int) num; | |
669 | } | |
046a37bd SR |
670 | str = number(str, end, num, base, field_width, precision, |
671 | flags); | |
672 | } | |
673 | ||
046a37bd SR |
674 | if (size > 0) { |
675 | ADDCH(str, '\0'); | |
676 | if (str > end) | |
677 | end[-1] = '\0'; | |
686f60f5 | 678 | --str; |
153d511e | 679 | } |
046a37bd | 680 | /* the trailing null byte doesn't count towards the total */ |
8acdae68 | 681 | return str - buf; |
153d511e WD |
682 | } |
683 | ||
046a37bd SR |
684 | int vsnprintf(char *buf, size_t size, const char *fmt, |
685 | va_list args) | |
686 | { | |
687 | return vsnprintf_internal(buf, size, fmt, args); | |
688 | } | |
689 | ||
046a37bd SR |
690 | int vscnprintf(char *buf, size_t size, const char *fmt, va_list args) |
691 | { | |
692 | int i; | |
693 | ||
694 | i = vsnprintf(buf, size, fmt, args); | |
695 | ||
696 | if (likely(i < size)) | |
697 | return i; | |
698 | if (size != 0) | |
699 | return size - 1; | |
700 | return 0; | |
701 | } | |
702 | ||
046a37bd SR |
703 | int snprintf(char *buf, size_t size, const char *fmt, ...) |
704 | { | |
705 | va_list args; | |
706 | int i; | |
707 | ||
708 | va_start(args, fmt); | |
709 | i = vsnprintf(buf, size, fmt, args); | |
710 | va_end(args); | |
711 | ||
712 | return i; | |
713 | } | |
714 | ||
046a37bd SR |
715 | int scnprintf(char *buf, size_t size, const char *fmt, ...) |
716 | { | |
717 | va_list args; | |
718 | int i; | |
719 | ||
720 | va_start(args, fmt); | |
721 | i = vscnprintf(buf, size, fmt, args); | |
722 | va_end(args); | |
723 | ||
724 | return i; | |
725 | } | |
046a37bd SR |
726 | |
727 | /** | |
728 | * Format a string and place it in a buffer (va_list version) | |
729 | * | |
730 | * @param buf The buffer to place the result into | |
731 | * @param fmt The format string to use | |
732 | * @param args Arguments for the format string | |
733 | * | |
734 | * The function returns the number of characters written | |
735 | * into @buf. Use vsnprintf() or vscnprintf() in order to avoid | |
736 | * buffer overflows. | |
737 | * | |
738 | * If you're not already dealing with a va_list consider using sprintf(). | |
739 | */ | |
740 | int vsprintf(char *buf, const char *fmt, va_list args) | |
741 | { | |
742 | return vsnprintf_internal(buf, INT_MAX, fmt, args); | |
743 | } | |
744 | ||
8acdae68 | 745 | int sprintf(char *buf, const char *fmt, ...) |
153d511e WD |
746 | { |
747 | va_list args; | |
748 | int i; | |
749 | ||
750 | va_start(args, fmt); | |
8acdae68 | 751 | i = vsprintf(buf, fmt, args); |
153d511e WD |
752 | va_end(args); |
753 | return i; | |
754 | } | |
755 | ||
7d9cde10 SR |
756 | int printf(const char *fmt, ...) |
757 | { | |
758 | va_list args; | |
759 | uint i; | |
760 | char printbuffer[CONFIG_SYS_PBSIZE]; | |
761 | ||
762 | va_start(args, fmt); | |
763 | ||
764 | /* | |
765 | * For this to work, printbuffer must be larger than | |
766 | * anything we ever want to print. | |
767 | */ | |
768 | i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); | |
769 | va_end(args); | |
770 | ||
771 | /* Print the string */ | |
772 | puts(printbuffer); | |
773 | return i; | |
774 | } | |
775 | ||
776 | int vprintf(const char *fmt, va_list args) | |
777 | { | |
778 | uint i; | |
779 | char printbuffer[CONFIG_SYS_PBSIZE]; | |
780 | ||
781 | /* | |
782 | * For this to work, printbuffer must be larger than | |
783 | * anything we ever want to print. | |
784 | */ | |
785 | i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); | |
786 | ||
787 | /* Print the string */ | |
788 | puts(printbuffer); | |
789 | return i; | |
790 | } | |
791 | ||
66312374 | 792 | |
21726a7a SG |
793 | void __assert_fail(const char *assertion, const char *file, unsigned line, |
794 | const char *function) | |
795 | { | |
796 | /* This will not return */ | |
797 | panic("%s:%u: %s: Assertion `%s' failed.", file, line, function, | |
798 | assertion); | |
799 | } | |
3cce8a54 SG |
800 | |
801 | char *simple_itoa(ulong i) | |
802 | { | |
803 | /* 21 digits plus null terminator, good for 64-bit or smaller ints */ | |
804 | static char local[22]; | |
805 | char *p = &local[21]; | |
806 | ||
807 | *p-- = '\0'; | |
808 | do { | |
809 | *p-- = '0' + i % 10; | |
810 | i /= 10; | |
811 | } while (i > 0); | |
812 | return p + 1; | |
813 | } | |
b8bcaa3a SG |
814 | |
815 | /* We don't seem to have %'d in U-Boot */ | |
816 | void print_grouped_ull(unsigned long long int_val, int digits) | |
817 | { | |
818 | char str[21], *s; | |
819 | int grab = 3; | |
820 | ||
821 | digits = (digits + 2) / 3; | |
822 | sprintf(str, "%*llu", digits * 3, int_val); | |
823 | for (s = str; *s; s += grab) { | |
824 | if (s != str) | |
825 | putc(s[-1] != ' ' ? ',' : ' '); | |
826 | printf("%.*s", grab, s); | |
827 | grab = 3; | |
828 | } | |
829 | } | |
09c32807 HS |
830 | |
831 | bool str2off(const char *p, loff_t *num) | |
832 | { | |
833 | char *endptr; | |
834 | ||
835 | *num = simple_strtoull(p, &endptr, 16); | |
836 | return *p != '\0' && *endptr == '\0'; | |
837 | } | |
838 | ||
839 | bool str2long(const char *p, ulong *num) | |
840 | { | |
841 | char *endptr; | |
842 | ||
843 | *num = simple_strtoul(p, &endptr, 16); | |
844 | return *p != '\0' && *endptr == '\0'; | |
845 | } |