lcfOS: cos/kernel/snprintf.c annotate

annotate cos/kernel/snprintf.c @ 299:674789d9ff37

Added a doc

author	Windel Bouwman
date	Sun, 01 Dec 2013 18:37:23 +0100
parents	8012221dd740
children

rev	line source
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	1 /*
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	2 * snprintf.c
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	3 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	4 #include "kernel.h"
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	5
13 d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	6 /*
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	7 * NOTE! This ctype does not handle EOF like the standard C
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	8 * library is required to.
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	9 */
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	10
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	11 #define _U 0x01 /* upper */
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	12 #define _L 0x02 /* lower */
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	13 #define _D 0x04 /* digit */
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	14 #define _C 0x08 /* cntrl */
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	15 #define _P 0x10 /* punct */
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	16 #define _S 0x20 /* white space (space/lf/tab) */
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	17 #define _X 0x40 /* hex digit */
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	18 #define _SP 0x80 /* hard space (0x20) */
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	19
17 f3e3e0e9c4bc First attempt IDT loader 64 bits. INT13 occurs windel parents: 13 diff changeset	20 uint8_t _ctype[] = {
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	21 _C,_C,_C,_C,_C,_C,_C,_C, /* 0-7 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	22 _C,_C\|_S,_C\|_S,_C\|_S,_C\|_S,_C\|_S,_C,_C, /* 8-15 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	23 _C,_C,_C,_C,_C,_C,_C,_C, /* 16-23 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	24 _C,_C,_C,_C,_C,_C,_C,_C, /* 24-31 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	25 _S\|_SP,_P,_P,_P,_P,_P,_P,_P, /* 32-39 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	26 _P,_P,_P,_P,_P,_P,_P,_P, /* 40-47 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	27 _D,_D,_D,_D,_D,_D,_D,_D, /* 48-55 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	28 _D,_D,_P,_P,_P,_P,_P,_P, /* 56-63 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	29 _P,_U\|_X,_U\|_X,_U\|_X,_U\|_X,_U\|_X,_U\|_X,_U, /* 64-71 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	30 _U,_U,_U,_U,_U,_U,_U,_U, /* 72-79 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	31 _U,_U,_U,_U,_U,_U,_U,_U, /* 80-87 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	32 _U,_U,_U,_P,_P,_P,_P,_P, /* 88-95 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	33 _P,_L\|_X,_L\|_X,_L\|_X,_L\|_X,_L\|_X,_L\|_X,_L, /* 96-103 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	34 _L,_L,_L,_L,_L,_L,_L,_L, /* 104-111 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	35 _L,_L,_L,_L,_L,_L,_L,_L, /* 112-119 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	36 _L,_L,_L,_P,_P,_P,_P,_C, /* 120-127 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	37 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 128-143 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	38 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 144-159 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	39 _S\|_SP,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P, /* 160-175 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	40 _P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P, /* 176-191 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	41 _U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U, /* 192-207 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	42 _U,_U,_U,_U,_U,_U,_U,_P,_U,_U,_U,_U,_U,_U,_U,_L, /* 208-223 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	43 _L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L, /* 224-239 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	44 _L,_L,_L,_L,_L,_L,_L,_P,_L,_L,_L,_L,_L,_L,_L,_L}; /* 240-255 */
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	45
17 f3e3e0e9c4bc First attempt IDT loader 64 bits. INT13 occurs windel parents: 13 diff changeset	46 #define __ismask(x) (_ctype[(int)(uint8_t)(x)])
13 d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	47
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	48 #define isalnum(c) ((__ismask(c)&(_U\|_L\|_D)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	49 #define isalpha(c) ((__ismask(c)&(_U\|_L)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	50 #define iscntrl(c) ((__ismask(c)&(_C)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	51 #define isdigit(c) ((__ismask(c)&(_D)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	52 #define isgraph(c) ((__ismask(c)&(_P\|_U\|_L\|_D)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	53 #define islower(c) ((__ismask(c)&(_L)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	54 #define isprint(c) ((__ismask(c)&(_P\|_U\|_L\|_D\|_SP)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	55 #define ispunct(c) ((__ismask(c)&(_P)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	56 #define isspace(c) ((__ismask(c)&(_S)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	57 #define isupper(c) ((__ismask(c)&(_U)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	58 #define isxdigit(c) ((__ismask(c)&(_D\|_X)) != 0)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	59
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	60 #define isascii(c) (((unsigned char)(c))<=0x7f)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	61 #define toascii(c) (((unsigned char)(c))&0x7f)
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	62
17 f3e3e0e9c4bc First attempt IDT loader 64 bits. INT13 occurs windel parents: 13 diff changeset	63 static inline uint8_t tolower(uint8_t c)
13 d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	64 {
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	65 if (isupper(c))
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	66 c += 'a'-'A';
13 d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	67 return c;
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	68 }
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	69
17 f3e3e0e9c4bc First attempt IDT loader 64 bits. INT13 occurs windel parents: 13 diff changeset	70 static inline uint8_t toupper(uint8_t c)
13 d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	71 {
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	72 if (islower(c))
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	73 c -= 'a'-'A';
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	74 return c;
d07d4701a103 Cleanup of header files windel parents: 12 diff changeset	75 }
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	76
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	77 #define MORE_THAN_YOU_WANT 1<<30
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	78 #define MAX_STDOUT_CHARS 255
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	79
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	80 static char hexmap[] = {
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	81 '0', '1', '2', '3', '4', '5', '6', '7',
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	82 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	83 };
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	84
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	85 /* string print function. Supports the formats:
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	86 %p, %x: 64 bits hex number
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	87 %d: signed integer
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	88 %u: unsigned integer
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	89 */
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	90 void va_snprintf(char b, int l, const char fmt, va_list pvar)
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	91 {
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	92 int i;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	93 int64_t s64;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	94 uint64_t u64;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	95 char *t;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	96 char d[20]; // For storing the decimal value in chars.
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	97
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	98 if ((fmt == 0) \|\| (b == 0) \|\| (l < 1))
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	99 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	100 return;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	101 }
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	102
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	103 while ((l > 0) && (*fmt != 0))
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	104 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	105 if (*fmt == '%')
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	106 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	107 if ((--l) == 0)
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	108 {
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	109 break;
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	110 }
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	111
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	112 fmt++;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	113 switch (*fmt)
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	114 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	115 case 's': /* string */
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	116 t = va_arg(pvar, char *);
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	117 while ((l > 0) && (*t != 0))
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	118 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	119 b++ = t++;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	120 l--;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	121 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	122 break;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	123
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	124 case 'c': /* single character */
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	125 *b++ = (char)va_arg(pvar, int);
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	126 l--;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	127 break;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	128
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	129 case 'x':
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	130 case 'p':
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	131 /* Pointer and hex uint64_t */
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	132 /* 16 digit, unsigned 64-bit hex integer */
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	133 if (l < 18)
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	134 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	135 l = 0;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	136 break;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	137 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	138
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	139 *b++ = '0';
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	140 *b++ = 'x';
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	141
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	142 u64 = va_arg(pvar, uint64_t);
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	143 for (i = 15; i >= 0; i--)
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	144 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	145 b[i] = hexmap[u64 & 0x0f];
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	146 u64 >>= 4;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	147 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	148 b += 16;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	149 l -= 16;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	150 break;
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	151
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	152 case 'd': /* signed integer */
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	153 s64 = va_arg(pvar, int);
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	154 if (s64 < 0)
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	155 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	156 u64 = (uint64_t)(-s64);
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	157 *b++ = '-';
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	158 if ((--l) == 0)
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	159 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	160 break;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	161 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	162 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	163 else
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	164 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	165 u64 = s64;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	166 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	167 goto u2;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	168
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	169 case 'u': /* unsigned integer */
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	170 u64 = va_arg(pvar, unsigned int);
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	171 u2:
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	172 i = 19;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	173 do
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	174 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	175 d[i] = (u64 % 10) + '0';
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	176 u64 /= 10;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	177 i--;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	178 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	179 while ((u64 != 0) && (i >= 0));
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	180
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	181 // Now print the characters:
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	182 while (++i < 20)
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	183 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	184 *b++ = d[i];
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	185 if ((--l) == 0)
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	186 {
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	187 break;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	188 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	189 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	190 break;
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	191
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	192 default:
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	193 b++ = fmt;
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	194 }
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	195 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	196 else
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	197 {
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	198 b++ = fmt;
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	199 l--;
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	200 }
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	201
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	202 fmt++;
34 8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	203 }
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	204
8012221dd740 Fixes for uninitialized data. This causes problems on real machines windel parents: 18 diff changeset	205 *b = 0; // Add a 0 terminate
9 92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	206 }
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	207
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	208 void snprintf(char str, int len, char fmt, ...)
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	209 {
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	210 va_list pvar;
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	211 va_start(pvar, fmt);
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	212 va_snprintf(str, len, fmt, pvar);
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	213 va_end(pvar);
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	214 }
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	215
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	216 void
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	217 printf(const char* fmt, ...)
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	218 {
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	219 static char buf[MAX_STDOUT_CHARS];
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	220
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	221 va_list args;
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	222 va_start(args, fmt);
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	223 va_snprintf(buf, MAX_STDOUT_CHARS, fmt, args);
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	224 va_end(args);
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	225
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	226 print_string(buf);
92ace1ca50a8 64 bits kernel without interrupts but with printf in C windel parents: diff changeset	227 }

Mercurial > lcfOS

annotate cos/kernel/snprintf.c @ 299:674789d9ff37