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1271 cejka 1
/*
2
 * Copyright (C) 2001-2004 Jakub Jermar
3
 * Copyright (C) 2006 Josef Cejka
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
 
1702 cejka 30
 /** @addtogroup generic   
31
 * @{
32
 */
1271 cejka 33
/**
1702 cejka 34
 * @file
1271 cejka 35
 * @brief   Printing functions.
36
 */
37
 
38
#include <printf/printf_core.h>
39
#include <putchar.h>
40
#include <print.h>
41
#include <synch/spinlock.h>
42
#include <arch/arg.h>
43
#include <arch/asm.h>
44
 
45
#include <arch.h>
46
 
47
SPINLOCK_INITIALIZE(printflock);            /**< printf spinlock */
48
 
49
#define __PRINTF_FLAG_PREFIX        0x00000001  /**< show prefixes 0x or 0*/
50
#define __PRINTF_FLAG_SIGNED        0x00000002  /**< signed / unsigned number */
51
#define __PRINTF_FLAG_ZEROPADDED    0x00000004  /**< print leading zeroes */
52
#define __PRINTF_FLAG_LEFTALIGNED   0x00000010  /**< align to left */
53
#define __PRINTF_FLAG_SHOWPLUS      0x00000020  /**< always show + sign */
54
#define __PRINTF_FLAG_SPACESIGN     0x00000040  /**< print space instead of plus */
55
#define __PRINTF_FLAG_BIGCHARS      0x00000080  /**< show big characters */
56
#define __PRINTF_FLAG_NEGATIVE      0x00000100  /**< number has - sign */
57
 
58
#define PRINT_NUMBER_BUFFER_SIZE    (64+5)      /**< Buffer big enought for 64 bit number
59
                             * printed in base 2, sign, prefix and
60
                             * 0 to terminate string.. (last one is only for better testing
61
                             * end of buffer by zero-filling subroutine)*/
62
 
63
/** Enumeration of possible arguments types.
64
 */
65
typedef enum {
66
    PrintfQualifierByte = 0,
67
    PrintfQualifierShort,
68
    PrintfQualifierInt,
69
    PrintfQualifierLong,
70
    PrintfQualifierLongLong,
71
    PrintfQualifierNative,
72
    PrintfQualifierPointer
73
} qualifier_t;
74
 
75
static char digits_small[] = "0123456789abcdef";    /**< Small hexadecimal characters */
76
static char digits_big[] = "0123456789ABCDEF";  /**< Big hexadecimal characters */
77
 
78
/** Checks c for a digit.
79
 * @param c One character.
80
 * @return nonzero if c is from interval '0 to '9'.
81
 */
82
static inline int isdigit(int c)
83
{
84
    return ((c >= '0' )&&( c <= '9'));
85
}
86
 
87
/** Compute length of given zero terminated string.
88
 * @param str Pointer to valid string.
89
 * @return string length without trailing zero.
90
 */
91
static __native strlen(const char *str)
92
{
93
    __native counter = 0;
94
 
95
    while (str[counter] != 0) {
96
        counter++;
97
    }
98
 
99
    return counter;
100
}
101
 
102
/** Print count chars from buffer without adding newline
103
 * @param buf Buffer with size at least count bytes - NULL pointer NOT allowed!
104
 * @param count
105
 * @param ps output method and its data
1702 cejka 106
 * @return number of printed characters
1271 cejka 107
 */
108
static int printf_putnchars(const char * buf, size_t count, struct printf_spec *ps)
109
{
1604 cejka 110
    return ps->write((void *)buf, count, ps->data);
1271 cejka 111
}
112
 
113
/** Print string without added newline
114
 * @param str string to print
115
 * @param ps write function specification and support data
1702 cejka 116
 * @return number of printed characters
1271 cejka 117
 */
118
static int printf_putstr(const char * str, struct printf_spec *ps)
119
{
120
    size_t count;
121
 
122
    if (str == NULL) {
123
        return printf_putnchars("(NULL)", 6, ps);
124
    }
125
 
126
    count = strlen(str);
127
 
1604 cejka 128
    return ps->write((void *) str, count, ps->data);
1271 cejka 129
}
130
 
131
/** Print one character to output
132
 * @param c one character
133
 * @param ps output method
1702 cejka 134
 * @return number of printed characters
1271 cejka 135
 */
136
static int printf_putchar(int c, struct printf_spec *ps)
137
{
138
    unsigned char ch = c;
139
 
1604 cejka 140
    return ps->write((void *) &ch, 1, ps->data);
1271 cejka 141
}
142
 
143
/** Print one formatted character
144
 * @param c character to print
145
 * @param width
146
 * @param flags
1604 cejka 147
 * @return number of printed characters, negative value on fail
1271 cejka 148
 */
149
static int print_char(char c, int width, __u64 flags, struct printf_spec *ps)
150
{
151
    int counter = 0;
152
 
153
    if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
154
        while (--width > 0) {   /* one space is consumed by character itself hence predecrement */
1604 cejka 155
            if (printf_putchar(' ', ps) > 0)   
156
                ++counter;
1271 cejka 157
        }
158
    }
159
 
1604 cejka 160
    if (printf_putchar(c, ps) > 0)
161
        counter++;
1271 cejka 162
 
163
    while (--width > 0) { /* one space is consumed by character itself hence predecrement */
1604 cejka 164
        if (printf_putchar(' ', ps) > 0)
165
            ++counter;
1271 cejka 166
    }
167
 
168
    return ++counter;
169
}
170
 
171
/** Print one string
172
 * @param s string
173
 * @param width
174
 * @param precision
175
 * @param flags
1604 cejka 176
 * @return number of printed characters or negative value on fail
1271 cejka 177
 */
178
 
179
static int print_string(char *s, int width, int precision, __u64 flags, struct printf_spec *ps)
180
{
181
    int counter = 0;
182
    size_t size;
1604 cejka 183
    int retval;
1271 cejka 184
 
185
    if (s == NULL) {
186
        return printf_putstr("(NULL)", ps);
187
    }
188
 
189
    size = strlen(s);
190
 
191
    /* print leading spaces */
192
 
193
    if (precision == 0)
194
        precision = size;
195
 
196
    width -= precision;
197
 
198
    if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
199
        while (width-- > 0) {  
1604 cejka 200
            if (printf_putchar(' ', ps) == 1)  
201
                counter++;
1271 cejka 202
        }
203
    }
204
 
205
    while (precision > size) {
206
        precision--;
1604 cejka 207
        if (printf_putchar(' ', ps) == 1)  
208
            ++counter;
1271 cejka 209
    }
210
 
1604 cejka 211
    if ((retval = printf_putnchars(s, precision, ps)) < 0) {
212
        return -counter;
1271 cejka 213
    }
1604 cejka 214
    counter += retval; 
1271 cejka 215
 
216
    while (width-- > 0) {
1604 cejka 217
        if (printf_putchar(' ', ps) == 1)  
218
            ++counter;
1271 cejka 219
    }
220
 
1604 cejka 221
    return counter;
1271 cejka 222
}
223
 
224
 
225
/** Print number in given base
226
 *
227
 * Print significant digits of a number in given
228
 * base.
229
 *
230
 * @param num  Number to print.
231
 * @param width
232
 * @param precision
233
 * @param base Base to print the number in (should
234
 *             be in range 2 .. 16).
235
 * @param flags output modifiers
236
 * @return number of written characters or EOF
237
 *
238
 */
239
static int print_number(__u64 num, int width, int precision, int base , __u64 flags, struct printf_spec *ps)
240
{
241
    char *digits = digits_small;
242
    char d[PRINT_NUMBER_BUFFER_SIZE];   /* this is good enough even for base == 2, prefix and sign */
243
    char *ptr = &d[PRINT_NUMBER_BUFFER_SIZE - 1];
244
    int size = 0; /* size of number with all prefixes and signs */
245
    int number_size; /* size of plain number */
246
    char sgn;
1604 cejka 247
    int retval;
248
    int counter = 0;
1271 cejka 249
 
250
    if (flags & __PRINTF_FLAG_BIGCHARS)
251
        digits = digits_big;   
252
 
253
    *ptr-- = 0; /* Put zero at end of string */
254
 
255
    if (num == 0) {
256
        *ptr-- = '0';
257
        size++;
258
    } else {
259
        do {
260
            *ptr-- = digits[num % base];
261
            size++;
262
        } while (num /= base);
263
    }
264
 
265
    number_size = size;
266
 
267
    /* Collect sum of all prefixes/signs/... to calculate padding and leading zeroes */
268
    if (flags & __PRINTF_FLAG_PREFIX) {
269
        switch(base) {
270
            case 2: /* Binary formating is not standard, but usefull */
271
                size += 2;
272
                break;
273
            case 8:
274
                size++;
275
                break;
276
            case 16:
277
                size += 2;
278
                break;
279
        }
280
    }
281
 
282
    sgn = 0;
283
    if (flags & __PRINTF_FLAG_SIGNED) {
284
        if (flags & __PRINTF_FLAG_NEGATIVE) {
285
            sgn = '-';
286
            size++;
287
        } else if (flags & __PRINTF_FLAG_SHOWPLUS) {
288
                sgn = '+';
289
                size++;
290
            } else if (flags & __PRINTF_FLAG_SPACESIGN) {
291
                    sgn = ' ';
292
                    size++;
293
                }
294
    }
295
 
296
    if (flags & __PRINTF_FLAG_LEFTALIGNED) {
297
        flags &= ~__PRINTF_FLAG_ZEROPADDED;
298
    }
299
 
300
    /* if number is leftaligned or precision is specified then zeropadding is ignored */
301
    if (flags & __PRINTF_FLAG_ZEROPADDED) {
302
        if ((precision == 0) && (width > size)) {
303
            precision = width - size + number_size;
304
        }
305
    }
306
 
307
    /* print leading spaces */
308
    if (number_size > precision) /* We must print whole number not only a part */
309
        precision = number_size;
310
 
311
    width -= precision + size - number_size;
312
 
313
    if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
314
        while (width-- > 0) {  
1604 cejka 315
            if (printf_putchar(' ', ps) == 1)  
316
                counter++;
1271 cejka 317
        }
318
    }
319
 
1604 cejka 320
 
1271 cejka 321
    /* print sign */
322
    if (sgn) {
1604 cejka 323
        if (printf_putchar(sgn, ps) == 1)
324
            counter++;
1271 cejka 325
    }
326
 
327
    /* print prefix */
328
 
329
    if (flags & __PRINTF_FLAG_PREFIX) {
330
        switch(base) {
331
            case 2: /* Binary formating is not standard, but usefull */
1604 cejka 332
                if (printf_putchar('0', ps) == 1)
333
                    counter++;
1271 cejka 334
                if (flags & __PRINTF_FLAG_BIGCHARS) {
1604 cejka 335
                    if (printf_putchar('B', ps) == 1)
336
                        counter++;
1271 cejka 337
                } else {
1604 cejka 338
                    if (printf_putchar('b', ps) == 1)
339
                        counter++;
1271 cejka 340
                }
341
                break;
342
            case 8:
1604 cejka 343
                if (printf_putchar('o', ps) == 1)
344
                    counter++;
1271 cejka 345
                break;
346
            case 16:
1604 cejka 347
                if (printf_putchar('0', ps) == 1)
348
                    counter++;
1271 cejka 349
                if (flags & __PRINTF_FLAG_BIGCHARS) {
1604 cejka 350
                    if (printf_putchar('X', ps) == 1)
351
                        counter++;
1271 cejka 352
                } else {
1604 cejka 353
                    if (printf_putchar('x', ps) == 1)
354
                        counter++;
1271 cejka 355
                }
356
                break;
357
        }
358
    }
359
 
360
    /* print leading zeroes */
361
    precision -= number_size;
362
    while (precision-- > 0) {  
1604 cejka 363
        if (printf_putchar('0', ps) == 1)
364
            counter++;
1271 cejka 365
    }
366
 
367
 
368
    /* print number itself */
369
 
1604 cejka 370
    if ((retval = printf_putstr(++ptr, ps)) > 0) {
371
        counter += retval;
372
    }
1271 cejka 373
 
374
    /* print ending spaces */
375
 
376
    while (width-- > 0) {  
1604 cejka 377
        if (printf_putchar(' ', ps) == 1)  
378
            counter++;
1271 cejka 379
    }
380
 
1604 cejka 381
    return counter;
1271 cejka 382
}
383
 
384
 
385
/** Print formatted string.
386
 *
387
 * Print string formatted according to the fmt parameter
388
 * and variadic arguments. Each formatting directive
389
 * must have the following form:
390
 *
391
 *  \% [ FLAGS ] [ WIDTH ] [ .PRECISION ] [ TYPE ] CONVERSION
392
 *
393
 * FLAGS:@n
394
 *  - "#" Force to print prefix.
395
 *  For conversion \%o the prefix is 0, for %x and \%X prefixes are 0x and 0X
396
 *  and for conversion \%b the prefix is 0b.
397
 *
398
 *  - "-"   Align to left.
399
 *
400
 *  - "+"   Print positive sign just as negative.
401
 *
402
 *  - " "   If the printed number is positive and "+" flag is not set, print space in
403
 *  place of sign.
404
 *
405
 *  - "0"   Print 0 as padding instead of spaces. Zeroes are placed between sign and the
406
 *  rest of the number. This flag is ignored if "-" flag is specified.
407
 *
408
 * WIDTH:@n
409
 *  - Specify minimal width of printed argument. If it is bigger, width is ignored.
410
 * If width is specified with a "*" character instead of number, width is taken from
411
 * parameter list. And integer parameter is expected before parameter for processed
412
 * conversion specification. If this value is negative its absolute value is taken
413
 * and the "-" flag is set.
414
 *
415
 * PRECISION:@n
416
 *  - Value precision. For numbers it specifies minimum valid numbers.
417
 * Smaller numbers are printed with leading zeroes. Bigger numbers are not affected.
418
 * Strings with more than precision characters are cut off.
419
 * Just as with width, an "*" can be used used instead of a number.
420
 * An integer value is then expected in parameters. When both width and precision
421
 * are specified using "*", the first parameter is used for width and the second one
422
 * for precision.
423
 *
424
 * TYPE:@n
425
 *  - "hh"  Signed or unsigned char.@n
426
 *  - "h"   Signed or usigned short.@n
427
 *  - ""    Signed or usigned int (default value).@n
428
 *  - "l"   Signed or usigned long int.@n
429
 *  - "ll"  Signed or usigned long long int.@n
430
 *  - "z"   __native (non-standard extension).@n
431
 *
432
 *
433
 * CONVERSION:@n
434
 *  - % Print percentile character itself.
435
 *
436
 *  - c Print single character.
437
 *
438
 *  - s Print zero terminated string. If a NULL value is passed as value, "(NULL)" is printed instead.
439
 *
440
 *  - P, p  Print value of a pointer. Void * value is expected and it is printed in hexadecimal notation with prefix
441
 *  (as with \%#X or \%#x for 32bit or \%#X / \%#x for 64bit long pointers).
442
 *
443
 *  - b Print value as unsigned binary number. Prefix is not printed by default. (Nonstandard extension.)
444
 *
445
 *  - o Print value as unsigned octal number. Prefix is not printed by default.
446
 *
447
 *  - d,i   Print signed decimal number. There is no difference between d and i conversion.
448
 *
449
 *  - u Print unsigned decimal number.
450
 *
451
 *  - X, x  Print hexadecimal number with upper- or lower-case. Prefix is not printed by default.
452
 *
453
 * All other characters from fmt except the formatting directives
454
 * are printed in verbatim.
455
 *
456
 * @param fmt Formatting NULL terminated string.
457
 * @return Number of printed characters or negative value on failure.
458
 */
459
int printf_core(const char *fmt, struct printf_spec *ps, va_list ap)
460
{
461
    int irqpri;
1273 cejka 462
    int i = 0, j = 0; /**< i is index of currently processed char from fmt, j is index to the first not printed nonformating character */
1271 cejka 463
    int end;
1273 cejka 464
    int counter; /**< counter of printed characters */
465
    int retval; /**< used to store return values from called functions */
1271 cejka 466
    char c;
467
    qualifier_t qualifier;  /* type of argument */
1273 cejka 468
    int base;   /**< base in which will be parameter (numbers only) printed */
469
    __u64 number; /**< argument value */
470
    size_t  size; /**< byte size of integer parameter */
1271 cejka 471
    int width, precision;
472
    __u64 flags;
473
 
474
    counter = 0;
475
 
476
    irqpri = interrupts_disable();
477
    spinlock_lock(&printflock);
478
 
479
    while ((c = fmt[i])) {
480
        /* control character */
481
        if (c == '%' ) {
482
            /* print common characters if any processed */ 
483
            if (i > j) {
1604 cejka 484
                if ((retval = printf_putnchars(&fmt[j], (size_t)(i - j), ps)) < 0) { /* error */
1271 cejka 485
                    counter = -counter;
486
                    goto out;
487
                }
488
                counter += retval;
489
            }
490
 
491
            j = i;
492
            /* parse modifiers */
493
            flags = 0;
494
            end = 0;
495
 
496
            do {
497
                ++i;
498
                switch (c = fmt[i]) {
499
                    case '#': flags |= __PRINTF_FLAG_PREFIX; break;
500
                    case '-': flags |= __PRINTF_FLAG_LEFTALIGNED; break;
501
                    case '+': flags |= __PRINTF_FLAG_SHOWPLUS; break;
502
                    case ' ': flags |= __PRINTF_FLAG_SPACESIGN; break;
503
                    case '0': flags |= __PRINTF_FLAG_ZEROPADDED; break;
504
                    default: end = 1;
505
                }; 
506
 
507
            } while (end == 0);
508
 
509
            /* width & '*' operator */
510
            width = 0;
511
            if (isdigit(fmt[i])) {
512
                while (isdigit(fmt[i])) {
513
                    width *= 10;
514
                    width += fmt[i++] - '0';
515
                }
516
            } else if (fmt[i] == '*') {
517
                /* get width value from argument list*/
518
                i++;
519
                width = (int)va_arg(ap, int);
520
                if (width < 0) {
521
                    /* negative width means to set '-' flag */
522
                    width *= -1;
523
                    flags |= __PRINTF_FLAG_LEFTALIGNED;
524
                }
525
            }
526
 
527
            /* precision and '*' operator */   
528
            precision = 0;
529
            if (fmt[i] == '.') {
530
                ++i;
531
                if (isdigit(fmt[i])) {
532
                    while (isdigit(fmt[i])) {
533
                        precision *= 10;
534
                        precision += fmt[i++] - '0';
535
                    }
536
                } else if (fmt[i] == '*') {
537
                    /* get precision value from argument list*/
538
                    i++;
539
                    precision = (int)va_arg(ap, int);
540
                    if (precision < 0) {
541
                        /* negative precision means to ignore it */
542
                        precision = 0;
543
                    }
544
                }
545
            }
546
 
547
            switch (fmt[i++]) {
548
                /** TODO: unimplemented qualifiers:
549
                 * t ptrdiff_t - ISO C 99
550
                 */
551
                case 'h':   /* char or short */
552
                    qualifier = PrintfQualifierShort;
553
                    if (fmt[i] == 'h') {
554
                        i++;
555
                        qualifier = PrintfQualifierByte;
556
                    }
557
                    break;
558
                case 'l':   /* long or long long*/
559
                    qualifier = PrintfQualifierLong;
560
                    if (fmt[i] == 'l') {
561
                        i++;
562
                        qualifier = PrintfQualifierLongLong;
563
                    }
564
                    break;
565
                case 'z':   /* __native */
566
                    qualifier = PrintfQualifierNative;
567
                    break;
568
                default:
569
                    qualifier = PrintfQualifierInt; /* default type */
570
                    --i;
571
            }  
572
 
573
            base = 10;
574
 
575
            switch (c = fmt[i]) {
576
 
577
                /*
578
                * String and character conversions.
579
                */
580
                case 's':
1604 cejka 581
                    if ((retval = print_string(va_arg(ap, char*), width, precision, flags, ps)) < 0) {
1271 cejka 582
                        counter = -counter;
583
                        goto out;
584
                    };
585
 
586
                    counter += retval;
587
                    j = i + 1;
588
                    goto next_char;
589
                case 'c':
590
                    c = va_arg(ap, unsigned int);
1604 cejka 591
                    if ((retval = print_char(c, width, flags, ps)) < 0) {
1271 cejka 592
                        counter = -counter;
593
                        goto out;
594
                    };
595
 
596
                    counter += retval;
597
                    j = i + 1;
598
                    goto next_char;
599
 
600
                /*
601
                 * Integer values
602
                */
603
                case 'P': /* pointer */
604
                        flags |= __PRINTF_FLAG_BIGCHARS;
605
                case 'p':
606
                    flags |= __PRINTF_FLAG_PREFIX;
607
                    base = 16;
608
                    qualifier = PrintfQualifierPointer;
609
                    break; 
610
                case 'b':
611
                    base = 2;
612
                    break;
613
                case 'o':
614
                    base = 8;
615
                    break;
616
                case 'd':
617
                case 'i':
618
                    flags |= __PRINTF_FLAG_SIGNED;  
619
                case 'u':
620
                    break;
621
                case 'X':
622
                    flags |= __PRINTF_FLAG_BIGCHARS;
623
                case 'x':
624
                    base = 16;
625
                    break;
626
                /* percentile itself */
627
                case '%':
628
                    j = i;
629
                    goto next_char;
630
                /*
631
                * Bad formatting.
632
                */
633
                default:
634
                    /* Unknown format
635
                     *  now, the j is index of '%' so we will
636
                     * print whole bad format sequence
637
                     */
638
                    goto next_char;    
639
            }
640
 
641
 
642
        /* Print integers */
643
            /* print number */
644
            switch (qualifier) {
645
                case PrintfQualifierByte:
646
                    size = sizeof(unsigned char);
647
                    number = (__u64)va_arg(ap, unsigned int);
648
                    break;
649
                case PrintfQualifierShort:
650
                    size = sizeof(unsigned short);
651
                    number = (__u64)va_arg(ap, unsigned int);
652
                    break;
653
                case PrintfQualifierInt:
654
                    size = sizeof(unsigned int);
655
                    number = (__u64)va_arg(ap, unsigned int);
656
                    break;
657
                case PrintfQualifierLong:
658
                    size = sizeof(unsigned long);
659
                    number = (__u64)va_arg(ap, unsigned long);
660
                    break;
661
                case PrintfQualifierLongLong:
662
                    size = sizeof(unsigned long long);
663
                    number = (__u64)va_arg(ap, unsigned long long);
664
                    break;
665
                case PrintfQualifierPointer:
666
                    size = sizeof(void *);
667
                    number = (__u64)(unsigned long)va_arg(ap, void *);
668
                    break;
669
                case PrintfQualifierNative:
670
                    size = sizeof(__native);
671
                    number = (__u64)va_arg(ap, __native);
672
                    break;
673
                default: /* Unknown qualifier */
674
                    counter = -counter;
675
                    goto out;
676
            }
677
 
678
            if (flags & __PRINTF_FLAG_SIGNED) {
679
                if (number & (0x1 << (size*8 - 1))) {
680
                    flags |= __PRINTF_FLAG_NEGATIVE;
681
 
682
                    if (size == sizeof(__u64)) {
683
                        number = -((__s64)number);
684
                    } else {
685
                        number = ~number;
686
                        number &= (~((0xFFFFFFFFFFFFFFFFll) <<  (size * 8)));
687
                        number++;
688
                    }
689
                }
690
            }
691
 
1604 cejka 692
            if ((retval = print_number(number, width, precision, base, flags, ps)) < 0) {
1271 cejka 693
                counter = -counter;
694
                goto out;
695
            };
696
 
697
            counter += retval;
698
            j = i + 1;
699
        }  
700
next_char:
701
 
702
        ++i;
703
    }
704
 
705
    if (i > j) {
1604 cejka 706
        if ((retval = printf_putnchars(&fmt[j], (__native)(i - j), ps)) < 0) { /* error */
1271 cejka 707
            counter = -counter;
708
            goto out;
709
 
710
        }
711
        counter += retval;
712
    }
713
 
714
out:
715
    spinlock_unlock(&printflock);
716
    interrupts_restore(irqpri);
717
 
718
    return counter;
719
}
720
 
1702 cejka 721
 
722
 /** @}
723
 */
724