Rev 1249 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1 | jermar | 1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
||
1196 | cejka | 3 | * Copyright (C) 2006 Josef Cejka |
1 | jermar | 4 | * All rights reserved. |
5 | * |
||
6 | * Redistribution and use in source and binary forms, with or without |
||
7 | * modification, are permitted provided that the following conditions |
||
8 | * are met: |
||
9 | * |
||
10 | * - Redistributions of source code must retain the above copyright |
||
11 | * notice, this list of conditions and the following disclaimer. |
||
12 | * - Redistributions in binary form must reproduce the above copyright |
||
13 | * notice, this list of conditions and the following disclaimer in the |
||
14 | * documentation and/or other materials provided with the distribution. |
||
15 | * - The name of the author may not be used to endorse or promote products |
||
16 | * derived from this software without specific prior written permission. |
||
17 | * |
||
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
28 | */ |
||
29 | |||
1264 | jermar | 30 | /** |
31 | * @file print.c |
||
32 | * @brief Printing functions. |
||
33 | */ |
||
34 | |||
1 | jermar | 35 | #include <putchar.h> |
36 | #include <print.h> |
||
37 | #include <synch/spinlock.h> |
||
40 | jermar | 38 | #include <arch/arg.h> |
115 | jermar | 39 | #include <arch/asm.h> |
228 | cejka | 40 | |
195 | vana | 41 | #include <arch.h> |
1 | jermar | 42 | |
1204 | jermar | 43 | SPINLOCK_INITIALIZE(printflock); /**< printf spinlock */ |
1 | jermar | 44 | |
1204 | jermar | 45 | #define __PRINTF_FLAG_PREFIX 0x00000001 /* show prefixes 0x or 0 */ |
1196 | cejka | 46 | #define __PRINTF_FLAG_SIGNED 0x00000002 /* signed / unsigned number */ |
47 | #define __PRINTF_FLAG_ZEROPADDED 0x00000004 /* print leading zeroes */ |
||
48 | #define __PRINTF_FLAG_LEFTALIGNED 0x00000010 /* align to left */ |
||
49 | #define __PRINTF_FLAG_SHOWPLUS 0x00000020 /* always show + sign */ |
||
50 | #define __PRINTF_FLAG_SPACESIGN 0x00000040 /* print space instead of plus */ |
||
51 | #define __PRINTF_FLAG_BIGCHARS 0x00000080 /* show big characters */ |
||
52 | #define __PRINTF_FLAG_NEGATIVE 0x00000100 /* number has - sign */ |
||
61 | decky | 53 | |
1196 | cejka | 54 | #define PRINT_NUMBER_BUFFER_SIZE (64+5) /* Buffer big enought for 64 bit number |
55 | * printed in base 2, sign, prefix and |
||
56 | * 0 to terminate string.. (last one is only for better testing |
||
57 | * end of buffer by zero-filling subroutine) |
||
58 | */ |
||
59 | typedef enum { |
||
60 | PrintfQualifierByte = 0, |
||
61 | PrintfQualifierShort, |
||
62 | PrintfQualifierInt, |
||
63 | PrintfQualifierLong, |
||
64 | PrintfQualifierLongLong, |
||
65 | PrintfQualifierNative, |
||
66 | PrintfQualifierPointer |
||
67 | } qualifier_t; |
||
68 | |||
69 | static char digits_small[] = "0123456789abcdef"; /* Small hexadecimal characters */ |
||
1204 | jermar | 70 | static char digits_big[] = "0123456789ABCDEF"; /* Big hexadecimal characters */ |
1196 | cejka | 71 | |
72 | static inline int isdigit(int c) |
||
228 | cejka | 73 | { |
1196 | cejka | 74 | return ((c >= '0' )&&( c <= '9')); |
75 | } |
||
1069 | cejka | 76 | |
1196 | cejka | 77 | static __native strlen(const char *str) |
78 | { |
||
79 | __native counter = 0; |
||
80 | |||
81 | while (str[counter] != 0) { |
||
82 | counter++; |
||
83 | } |
||
84 | |||
85 | return counter; |
||
86 | } |
||
87 | |||
1249 | jermar | 88 | /** Print one string without appending newline to the end. |
1204 | jermar | 89 | * |
1229 | jermar | 90 | * Do not use this function directly - printflock is not locked here. |
1204 | jermar | 91 | * |
92 | */ |
||
1196 | cejka | 93 | static int putstr(const char *str) |
94 | { |
||
95 | int count; |
||
1069 | cejka | 96 | if (str == NULL) { |
1196 | cejka | 97 | str = "(NULL)"; |
98 | } |
||
452 | decky | 99 | |
1196 | cejka | 100 | for (count = 0; str[count] != 0; count++) { |
101 | putchar(str[count]); |
||
102 | } |
||
103 | return count; |
||
452 | decky | 104 | } |
105 | |||
1229 | jermar | 106 | /** Print count characters from buffer to output. |
452 | decky | 107 | * |
1229 | jermar | 108 | * @param buffer Address of the buffer with charaters to be printed. |
109 | * @param count Number of characters to be printed. |
||
110 | * |
||
111 | * @return Number of characters printed. |
||
452 | decky | 112 | */ |
1196 | cejka | 113 | static int putnchars(const char *buffer, __native count) |
452 | decky | 114 | { |
115 | int i; |
||
1196 | cejka | 116 | if (buffer == NULL) { |
117 | buffer = "(NULL)"; |
||
118 | count = 6; |
||
119 | } |
||
120 | |||
121 | for (i = 0; i < count; i++) { |
||
122 | putchar(buffer[i]); |
||
123 | } |
||
124 | |||
125 | return count; |
||
452 | decky | 126 | } |
127 | |||
1196 | cejka | 128 | /** Print one formatted character |
1204 | jermar | 129 | * |
1229 | jermar | 130 | * @param c Character to print. |
1196 | cejka | 131 | * @param width |
132 | * @param flags |
||
1229 | jermar | 133 | * @return Number of printed characters or EOF. |
1196 | cejka | 134 | */ |
135 | static int print_char(char c, int width, __u64 flags) |
||
136 | { |
||
137 | int counter = 0; |
||
138 | |||
139 | if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) { |
||
1204 | jermar | 140 | while (--width > 0) { /* one space is consumed by character itself hence the predecrement */ |
141 | /* FIXME: painfully slow */ |
||
1196 | cejka | 142 | putchar(' '); |
143 | ++counter; |
||
144 | } |
||
145 | } |
||
146 | |||
147 | putchar(c); |
||
148 | ++counter; |
||
452 | decky | 149 | |
1204 | jermar | 150 | while (--width > 0) { /* one space is consumed by character itself hence the predecrement */ |
1196 | cejka | 151 | putchar(' '); |
152 | ++counter; |
||
153 | } |
||
154 | |||
155 | return counter; |
||
156 | } |
||
157 | |||
158 | /** Print one string |
||
159 | * @param s string |
||
160 | * @param width |
||
161 | * @param precision |
||
162 | * @param flags |
||
163 | * @return number of printed characters or EOF |
||
164 | */ |
||
165 | static int print_string(char *s, int width, int precision, __u64 flags) |
||
166 | { |
||
167 | int counter = 0; |
||
168 | __native size; |
||
169 | |||
170 | if (s == NULL) { |
||
171 | return putstr("(NULL)"); |
||
172 | } |
||
173 | |||
174 | size = strlen(s); |
||
175 | |||
176 | /* print leading spaces */ |
||
177 | |||
178 | if (precision == 0) |
||
179 | precision = size; |
||
180 | |||
181 | width -= precision; |
||
182 | |||
183 | if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) { |
||
184 | while (width-- > 0) { |
||
185 | putchar(' '); |
||
186 | counter++; |
||
187 | } |
||
188 | } |
||
189 | |||
190 | while (precision > size) { |
||
191 | precision--; |
||
192 | putchar(' '); |
||
193 | ++counter; |
||
194 | } |
||
195 | |||
196 | if (putnchars(s, precision) == EOF) { |
||
197 | return EOF; |
||
198 | } |
||
199 | |||
200 | counter += precision; |
||
201 | |||
202 | while (width-- > 0) { |
||
203 | putchar(' '); |
||
204 | ++counter; |
||
205 | } |
||
206 | |||
207 | return ++counter; |
||
208 | } |
||
209 | |||
210 | |||
452 | decky | 211 | /** Print number in given base |
212 | * |
||
213 | * Print significant digits of a number in given |
||
214 | * base. |
||
215 | * |
||
216 | * @param num Number to print. |
||
1196 | cejka | 217 | * @param width |
218 | * @param precision |
||
452 | decky | 219 | * @param base Base to print the number in (should |
220 | * be in range 2 .. 16). |
||
1196 | cejka | 221 | * @param flags output modifiers |
1224 | cejka | 222 | * @return number of written characters or EOF. |
452 | decky | 223 | */ |
1196 | cejka | 224 | static int print_number(__u64 num, int width, int precision, int base , __u64 flags) |
452 | decky | 225 | { |
1196 | cejka | 226 | char *digits = digits_small; |
227 | char d[PRINT_NUMBER_BUFFER_SIZE]; /* this is good enough even for base == 2, prefix and sign */ |
||
228 | char *ptr = &d[PRINT_NUMBER_BUFFER_SIZE - 1]; |
||
229 | int size = 0; |
||
1226 | cejka | 230 | int number_size; /* size of plain number */ |
1196 | cejka | 231 | int written = 0; |
232 | char sgn; |
||
452 | decky | 233 | |
1196 | cejka | 234 | if (flags & __PRINTF_FLAG_BIGCHARS) |
235 | digits = digits_big; |
||
452 | decky | 236 | |
1196 | cejka | 237 | *ptr-- = 0; /* Put zero at end of string */ |
238 | |||
239 | if (num == 0) { |
||
240 | *ptr-- = '0'; |
||
241 | size++; |
||
242 | } else { |
||
243 | do { |
||
244 | *ptr-- = digits[num % base]; |
||
245 | size++; |
||
246 | } while (num /= base); |
||
247 | } |
||
248 | |||
1226 | cejka | 249 | number_size = size; |
250 | |||
1196 | cejka | 251 | /* Collect sum of all prefixes/signs/... to calculate padding and leading zeroes */ |
252 | if (flags & __PRINTF_FLAG_PREFIX) { |
||
253 | switch(base) { |
||
254 | case 2: /* Binary formating is not standard, but usefull */ |
||
255 | size += 2; |
||
256 | break; |
||
257 | case 8: |
||
258 | size++; |
||
259 | break; |
||
260 | case 16: |
||
261 | size += 2; |
||
262 | break; |
||
263 | } |
||
264 | } |
||
265 | |||
266 | sgn = 0; |
||
267 | if (flags & __PRINTF_FLAG_SIGNED) { |
||
268 | if (flags & __PRINTF_FLAG_NEGATIVE) { |
||
269 | sgn = '-'; |
||
270 | size++; |
||
271 | } else if (flags & __PRINTF_FLAG_SHOWPLUS) { |
||
272 | sgn = '+'; |
||
273 | size++; |
||
274 | } else if (flags & __PRINTF_FLAG_SPACESIGN) { |
||
275 | sgn = ' '; |
||
276 | size++; |
||
277 | } |
||
278 | } |
||
279 | |||
280 | if (flags & __PRINTF_FLAG_LEFTALIGNED) { |
||
281 | flags &= ~__PRINTF_FLAG_ZEROPADDED; |
||
282 | } |
||
283 | |||
284 | /* if number is leftaligned or precision is specified then zeropadding is ignored */ |
||
285 | if (flags & __PRINTF_FLAG_ZEROPADDED) { |
||
286 | if ((precision == 0) && (width > size)) { |
||
1226 | cejka | 287 | precision = width - size + number_size; |
1196 | cejka | 288 | } |
289 | } |
||
290 | |||
291 | /* print leading spaces */ |
||
1226 | cejka | 292 | if (number_size > precision) /* We must print whole number not only a part */ |
293 | precision = number_size; |
||
1196 | cejka | 294 | |
1226 | cejka | 295 | width -= precision + size - number_size; |
1196 | cejka | 296 | |
297 | if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) { |
||
298 | while (width-- > 0) { |
||
299 | putchar(' '); |
||
300 | written++; |
||
301 | } |
||
302 | } |
||
303 | |||
304 | /* print sign */ |
||
305 | if (sgn) { |
||
306 | putchar(sgn); |
||
307 | written++; |
||
308 | } |
||
309 | |||
310 | /* print prefix */ |
||
311 | |||
312 | if (flags & __PRINTF_FLAG_PREFIX) { |
||
313 | switch(base) { |
||
314 | case 2: /* Binary formating is not standard, but usefull */ |
||
315 | putchar('0'); |
||
316 | if (flags & __PRINTF_FLAG_BIGCHARS) { |
||
317 | putchar('B'); |
||
318 | } else { |
||
319 | putchar('b'); |
||
320 | } |
||
321 | written += 2; |
||
322 | break; |
||
323 | case 8: |
||
324 | putchar('o'); |
||
325 | written++; |
||
326 | break; |
||
327 | case 16: |
||
328 | putchar('0'); |
||
329 | if (flags & __PRINTF_FLAG_BIGCHARS) { |
||
330 | putchar('X'); |
||
331 | } else { |
||
332 | putchar('x'); |
||
333 | } |
||
334 | written += 2; |
||
335 | break; |
||
336 | } |
||
337 | } |
||
338 | |||
339 | /* print leading zeroes */ |
||
1226 | cejka | 340 | precision -= number_size; |
1196 | cejka | 341 | while (precision-- > 0) { |
342 | putchar('0'); |
||
343 | written++; |
||
344 | } |
||
345 | |||
346 | |||
347 | /* print number itself */ |
||
348 | |||
349 | written += putstr(++ptr); |
||
350 | |||
351 | /* print ending spaces */ |
||
352 | |||
353 | while (width-- > 0) { |
||
354 | putchar(' '); |
||
355 | written++; |
||
356 | } |
||
357 | |||
358 | return written; |
||
452 | decky | 359 | } |
360 | |||
1229 | jermar | 361 | /** Print formatted string. |
61 | decky | 362 | * |
1249 | jermar | 363 | * Print string formatted according to the fmt parameter |
1204 | jermar | 364 | * and variadic arguments. Each formatting directive |
1198 | cejka | 365 | * must have the following form: |
1249 | jermar | 366 | * |
367 | * \% [ FLAGS ] [ WIDTH ] [ .PRECISION ] [ TYPE ] CONVERSION |
||
61 | decky | 368 | * |
1249 | jermar | 369 | * FLAGS:@n |
370 | * "#" Force to print prefix. |
||
371 | * For conversion \%o the prefix is 0, for %x and \%X prefixes are 0x and 0X |
||
372 | * and for conversion \%b the prefix is 0b. |
||
373 | * |
||
374 | * "-" Align to left. |
||
375 | * |
||
376 | * "+" Print positive sign just as negative. |
||
377 | * |
||
378 | * " " If the printed number is positive and "+" flag is not set, print space in |
||
379 | * place of sign. |
||
380 | * |
||
381 | * "0" Print 0 as padding instead of spaces. Zeroes are placed between sign and the |
||
382 | * rest of the number. This flag is ignored if "-" flag is specified. |
||
1198 | cejka | 383 | * |
1249 | jermar | 384 | * WIDTH:@n |
1198 | cejka | 385 | * Specify minimal width of printed argument. If it is bigger, width is ignored. |
1249 | jermar | 386 | * If width is specified with a "*" character instead of number, width is taken from |
387 | * parameter list. And integer parameter is expected before parameter for processed |
||
388 | * conversion specification. If this value is negative its absolute value is taken |
||
389 | * and the "-" flag is set. |
||
405 | jermar | 390 | * |
1249 | jermar | 391 | * PRECISION:@n |
1198 | cejka | 392 | * Value precision. For numbers it specifies minimum valid numbers. |
393 | * Smaller numbers are printed with leading zeroes. Bigger numbers are not affected. |
||
1204 | jermar | 394 | * Strings with more than precision characters are cut off. |
1249 | jermar | 395 | * Just as with width, an "*" can be used used instead of a number. |
396 | * An integer value is then expected in parameters. When both width and precision |
||
397 | * are specified using "*", the first parameter is used for width and the second one |
||
398 | * for precision. |
||
1198 | cejka | 399 | * |
1249 | jermar | 400 | * TYPE:@n |
401 | * "hh" Signed or unsigned char.@n |
||
402 | * "h" Signed or usigned short.@n |
||
403 | * "" Signed or usigned int (default value).@n |
||
404 | * "l" Signed or usigned long int.@n |
||
405 | * "ll" Signed or usigned long long int.@n |
||
406 | * "z" __native (non-standard extension).@n |
||
1198 | cejka | 407 | * |
408 | * |
||
1249 | jermar | 409 | * CONVERSION:@n |
410 | * % Print percentile character itself. |
||
405 | jermar | 411 | * |
1198 | cejka | 412 | * c Print single character. |
405 | jermar | 413 | * |
1198 | cejka | 414 | * s Print zero terminated string. If a NULL value is passed as value, "(NULL)" is printed instead. |
415 | * |
||
416 | * P, p Print value of a pointer. Void * value is expected and it is printed in hexadecimal notation with prefix |
||
1249 | jermar | 417 | * (as with \%#X or \%#x for 32bit or \%#X / \%#x for 64bit long pointers). |
405 | jermar | 418 | * |
1198 | cejka | 419 | * b Print value as unsigned binary number. Prefix is not printed by default. (Nonstandard extension.) |
420 | * |
||
421 | * o Print value as unsigned octal number. Prefix is not printed by default. |
||
405 | jermar | 422 | * |
1198 | cejka | 423 | * d,i Print signed decimal number. There is no difference between d and i conversion. |
405 | jermar | 424 | * |
1198 | cejka | 425 | * u Print unsigned decimal number. |
405 | jermar | 426 | * |
1229 | jermar | 427 | * X, x Print hexadecimal number with upper- or lower-case. Prefix is not printed by default. |
1198 | cejka | 428 | * |
1249 | jermar | 429 | * All other characters from fmt except the formatting directives |
61 | decky | 430 | * are printed in verbatim. |
431 | * |
||
432 | * @param fmt Formatting NULL terminated string. |
||
1229 | jermar | 433 | * @return Number of printed characters or negative value on failure. |
1 | jermar | 434 | */ |
1196 | cejka | 435 | int printf(const char *fmt, ...) |
1 | jermar | 436 | { |
1196 | cejka | 437 | int irqpri; |
438 | int i = 0, j = 0; /* i is index of currently processed char from fmt, j is index to the first not printed nonformating character */ |
||
439 | int end; |
||
440 | int counter; /* counter of printed characters */ |
||
441 | int retval; /* used to store return values from called functions */ |
||
40 | jermar | 442 | va_list ap; |
1196 | cejka | 443 | char c; |
444 | qualifier_t qualifier; /* type of argument */ |
||
445 | int base; /* base in which will be parameter (numbers only) printed */ |
||
446 | __u64 number; /* argument value */ |
||
447 | __native size; /* byte size of integer parameter */ |
||
448 | int width, precision; |
||
449 | __u64 flags; |
||
264 | cejka | 450 | |
1196 | cejka | 451 | counter = 0; |
452 | |||
40 | jermar | 453 | va_start(ap, fmt); |
1196 | cejka | 454 | |
413 | jermar | 455 | irqpri = interrupts_disable(); |
1 | jermar | 456 | spinlock_lock(&printflock); |
40 | jermar | 457 | |
1196 | cejka | 458 | |
459 | while ((c = fmt[i])) { |
||
460 | /* control character */ |
||
461 | if (c == '%' ) { |
||
462 | /* print common characters if any processed */ |
||
463 | if (i > j) { |
||
464 | if ((retval = putnchars(&fmt[j], (__native)(i - j))) == EOF) { /* error */ |
||
465 | counter = -counter; |
||
466 | goto out; |
||
467 | } |
||
468 | counter += retval; |
||
469 | } |
||
470 | |||
471 | j = i; |
||
472 | /* parse modifiers */ |
||
473 | flags = 0; |
||
474 | end = 0; |
||
475 | |||
476 | do { |
||
477 | ++i; |
||
478 | switch (c = fmt[i]) { |
||
479 | case '#': flags |= __PRINTF_FLAG_PREFIX; break; |
||
480 | case '-': flags |= __PRINTF_FLAG_LEFTALIGNED; break; |
||
481 | case '+': flags |= __PRINTF_FLAG_SHOWPLUS; break; |
||
482 | case ' ': flags |= __PRINTF_FLAG_SPACESIGN; break; |
||
483 | case '0': flags |= __PRINTF_FLAG_ZEROPADDED; break; |
||
484 | default: end = 1; |
||
485 | }; |
||
486 | |||
487 | } while (end == 0); |
||
488 | |||
489 | /* width & '*' operator */ |
||
490 | width = 0; |
||
491 | if (isdigit(fmt[i])) { |
||
492 | while (isdigit(fmt[i])) { |
||
493 | width *= 10; |
||
494 | width += fmt[i++] - '0'; |
||
495 | } |
||
496 | } else if (fmt[i] == '*') { |
||
497 | /* get width value from argument list*/ |
||
498 | i++; |
||
499 | width = (int)va_arg(ap, int); |
||
500 | if (width < 0) { |
||
501 | /* negative width means to set '-' flag */ |
||
502 | width *= -1; |
||
503 | flags |= __PRINTF_FLAG_LEFTALIGNED; |
||
504 | } |
||
505 | } |
||
506 | |||
507 | /* precision and '*' operator */ |
||
508 | precision = 0; |
||
509 | if (fmt[i] == '.') { |
||
510 | ++i; |
||
511 | if (isdigit(fmt[i])) { |
||
512 | while (isdigit(fmt[i])) { |
||
513 | precision *= 10; |
||
514 | precision += fmt[i++] - '0'; |
||
515 | } |
||
516 | } else if (fmt[i] == '*') { |
||
517 | /* get precision value from argument list*/ |
||
518 | i++; |
||
519 | precision = (int)va_arg(ap, int); |
||
520 | if (precision < 0) { |
||
521 | /* negative precision means to ignore it */ |
||
522 | precision = 0; |
||
523 | } |
||
524 | } |
||
525 | } |
||
1 | jermar | 526 | |
1196 | cejka | 527 | switch (fmt[i++]) { |
528 | /** TODO: unimplemented qualifiers: |
||
529 | * t ptrdiff_t - ISO C 99 |
||
530 | */ |
||
531 | case 'h': /* char or short */ |
||
532 | qualifier = PrintfQualifierShort; |
||
533 | if (fmt[i] == 'h') { |
||
534 | i++; |
||
535 | qualifier = PrintfQualifierByte; |
||
536 | } |
||
537 | break; |
||
538 | case 'l': /* long or long long*/ |
||
539 | qualifier = PrintfQualifierLong; |
||
540 | if (fmt[i] == 'l') { |
||
541 | i++; |
||
542 | qualifier = PrintfQualifierLongLong; |
||
543 | } |
||
544 | break; |
||
545 | case 'z': /* __native */ |
||
546 | qualifier = PrintfQualifierNative; |
||
547 | break; |
||
548 | default: |
||
549 | qualifier = PrintfQualifierInt; /* default type */ |
||
550 | --i; |
||
551 | } |
||
552 | |||
553 | base = 10; |
||
1 | jermar | 554 | |
1196 | cejka | 555 | switch (c = fmt[i]) { |
1 | jermar | 556 | |
1196 | cejka | 557 | /* |
558 | * String and character conversions. |
||
559 | */ |
||
560 | case 's': |
||
561 | if ((retval = print_string(va_arg(ap, char*), width, precision, flags)) == EOF) { |
||
562 | counter = -counter; |
||
563 | goto out; |
||
564 | }; |
||
565 | |||
566 | counter += retval; |
||
567 | j = i + 1; |
||
568 | goto next_char; |
||
569 | case 'c': |
||
570 | c = va_arg(ap, unsigned int); |
||
571 | if ((retval = print_char(c, width, flags )) == EOF) { |
||
572 | counter = -counter; |
||
573 | goto out; |
||
574 | }; |
||
575 | |||
576 | counter += retval; |
||
577 | j = i + 1; |
||
578 | goto next_char; |
||
1 | jermar | 579 | |
1196 | cejka | 580 | /* |
581 | * Integer values |
||
582 | */ |
||
583 | case 'P': /* pointer */ |
||
584 | flags |= __PRINTF_FLAG_BIGCHARS; |
||
585 | case 'p': |
||
586 | flags |= __PRINTF_FLAG_PREFIX; |
||
587 | base = 16; |
||
588 | qualifier = PrintfQualifierPointer; |
||
589 | break; |
||
590 | case 'b': |
||
591 | base = 2; |
||
592 | break; |
||
593 | case 'o': |
||
594 | base = 8; |
||
595 | break; |
||
596 | case 'd': |
||
597 | case 'i': |
||
598 | flags |= __PRINTF_FLAG_SIGNED; |
||
599 | case 'u': |
||
600 | break; |
||
601 | case 'X': |
||
602 | flags |= __PRINTF_FLAG_BIGCHARS; |
||
603 | case 'x': |
||
604 | base = 16; |
||
605 | break; |
||
606 | /* percentile itself */ |
||
607 | case '%': |
||
608 | j = i; |
||
609 | goto next_char; |
||
610 | /* |
||
611 | * Bad formatting. |
||
612 | */ |
||
613 | default: |
||
614 | /* Unknown format |
||
615 | * now, the j is index of '%' so we will |
||
616 | * print whole bad format sequence |
||
617 | */ |
||
618 | goto next_char; |
||
619 | } |
||
620 | |||
621 | |||
622 | /* Print integers */ |
||
623 | /* print number */ |
||
624 | switch (qualifier) { |
||
625 | case PrintfQualifierByte: |
||
626 | size = sizeof(unsigned char); |
||
627 | number = (__u64)va_arg(ap, unsigned int); |
||
628 | break; |
||
629 | case PrintfQualifierShort: |
||
630 | size = sizeof(unsigned short); |
||
631 | number = (__u64)va_arg(ap, unsigned int); |
||
632 | break; |
||
633 | case PrintfQualifierInt: |
||
634 | size = sizeof(unsigned int); |
||
635 | number = (__u64)va_arg(ap, unsigned int); |
||
636 | break; |
||
637 | case PrintfQualifierLong: |
||
638 | size = sizeof(unsigned long); |
||
639 | number = (__u64)va_arg(ap, unsigned long); |
||
640 | break; |
||
641 | case PrintfQualifierLongLong: |
||
642 | size = sizeof(unsigned long long); |
||
643 | number = (__u64)va_arg(ap, unsigned long long); |
||
644 | break; |
||
645 | case PrintfQualifierPointer: |
||
646 | size = sizeof(void *); |
||
647 | number = (__u64)(unsigned long)va_arg(ap, void *); |
||
648 | break; |
||
649 | case PrintfQualifierNative: |
||
650 | size = sizeof(__native); |
||
651 | number = (__u64)va_arg(ap, __native); |
||
652 | break; |
||
653 | default: /* Unknown qualifier */ |
||
654 | counter = -counter; |
||
655 | goto out; |
||
656 | |||
657 | } |
||
658 | |||
659 | if (flags & __PRINTF_FLAG_SIGNED) { |
||
660 | if (number & (0x1 << (size*8 - 1))) { |
||
661 | flags |= __PRINTF_FLAG_NEGATIVE; |
||
662 | |||
663 | if (size == sizeof(__u64)) { |
||
664 | number = -((__s64)number); |
||
665 | } else { |
||
666 | number = ~number; |
||
667 | number &= (~((0xFFFFFFFFFFFFFFFFll) << (size * 8))); |
||
668 | number++; |
||
669 | } |
||
670 | } |
||
671 | } |
||
1 | jermar | 672 | |
1196 | cejka | 673 | if ((retval = print_number(number, width, precision, base, flags)) == EOF ) { |
674 | counter = -counter; |
||
675 | goto out; |
||
676 | }; |
||
77 | jermar | 677 | |
1196 | cejka | 678 | counter += retval; |
679 | j = i + 1; |
||
680 | } |
||
681 | next_char: |
||
682 | |||
683 | ++i; |
||
684 | } |
||
674 | cejka | 685 | |
1196 | cejka | 686 | if (i > j) { |
687 | if ((retval = putnchars(&fmt[j], (__native)(i - j))) == EOF) { /* error */ |
||
688 | counter = -counter; |
||
689 | goto out; |
||
1 | jermar | 690 | } |
1196 | cejka | 691 | counter += retval; |
1 | jermar | 692 | } |
693 | out: |
||
694 | spinlock_unlock(&printflock); |
||
413 | jermar | 695 | interrupts_restore(irqpri); |
40 | jermar | 696 | |
697 | va_end(ap); |
||
1196 | cejka | 698 | return counter; |
1 | jermar | 699 | } |