[1bce637] | 1 | /*-------------------------------------------------------------------------+ |
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| 2 | | printk.c v1.1 - PC386 BSP - 1997/08/07 |
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| 3 | +--------------------------------------------------------------------------+ |
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| 4 | | (C) Copyright 1997 - |
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| 5 | | - NavIST Group - Real-Time Distributed Systems and Industrial Automation |
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| 6 | | |
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| 7 | | http://pandora.ist.utl.pt |
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| 8 | | |
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| 9 | | Instituto Superior Tecnico * Lisboa * PORTUGAL |
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| 10 | +--------------------------------------------------------------------------+ |
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| 11 | | Disclaimer: |
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| 12 | | |
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| 13 | | This file is provided "AS IS" without warranty of any kind, either |
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| 14 | | expressed or implied. |
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| 15 | +--------------------------------------------------------------------------+ |
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| 16 | | This code is based on code by: Jose Rufino - IST |
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| 17 | | |
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| 18 | | $Id$ |
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| 19 | +--------------------------------------------------------------------------*/ |
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| 20 | |
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[9c49db4] | 21 | #if HAVE_CONFIG_H |
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| 22 | #include "config.h" |
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| 23 | #endif |
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[1bce637] | 24 | |
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| 25 | #include <stdarg.h> |
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| 26 | #include <stdio.h> |
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| 27 | #include <bspIo.h> |
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| 28 | /* #include <libcpu/cpu.h> */ |
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| 29 | |
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| 30 | /*-------------------------------------------------------------------------+ |
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| 31 | | Function: printNum |
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| 32 | | Description: print number in a given base. |
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| 33 | | Global Variables: None. |
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| 34 | | Arguments: num - number to print, base - base used to print the number. |
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| 35 | | Returns: Nothing. |
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| 36 | +--------------------------------------------------------------------------*/ |
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| 37 | static void |
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| 38 | printNum(long unsigned int num, int base, int sign, int maxwidth, int lead) |
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| 39 | { |
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| 40 | long unsigned int n; |
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| 41 | int count; |
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| 42 | char toPrint[20]; |
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| 43 | |
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| 44 | if ( (sign == 1) && ((long)num < 0) ) { |
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| 45 | BSP_output_char('-'); |
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| 46 | num = -num; |
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| 47 | maxwidth--; |
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| 48 | } |
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| 49 | |
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| 50 | count = 0; |
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| 51 | while ((n = num / base) > 0) { |
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| 52 | toPrint[count++] = (num - (n*base)); |
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| 53 | num = n ; |
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| 54 | } |
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| 55 | toPrint[count++] = num; |
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| 56 | |
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| 57 | if (maxwidth) { |
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| 58 | for (n=maxwidth-count ; n ; n-- ) |
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| 59 | BSP_output_char(lead); |
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| 60 | } |
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| 61 | |
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| 62 | for (n = 0; n < count; n++){ |
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| 63 | BSP_output_char("0123456789ABCDEF"[(int)(toPrint[count-(n+1)])]); |
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| 64 | } |
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| 65 | } /* printNum */ |
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| 66 | |
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| 67 | |
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| 68 | /*-------------------------------------------------------------------------+ |
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| 69 | | Function: printk |
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| 70 | | Description: a simplified version of printf intended for use when the |
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| 71 | console is not yet initialized or in ISR's. |
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| 72 | | Global Variables: None. |
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| 73 | | Arguments: as in printf: fmt - format string, ... - unnamed arguments. |
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| 74 | | Returns: Nothing. |
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| 75 | +--------------------------------------------------------------------------*/ |
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| 76 | void |
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| 77 | printk(char *fmt, ...) |
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| 78 | { |
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| 79 | va_list ap; /* points to each unnamed argument in turn */ |
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| 80 | char c, *str; |
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| 81 | int lflag, base, sign, width, lead; |
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| 82 | /* unsigned int level; */ |
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| 83 | |
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| 84 | /* _CPU_ISR_Disable(level); */ |
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| 85 | |
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| 86 | va_start(ap, fmt); /* make ap point to 1st unnamed arg */ |
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| 87 | for (; *fmt != '\0'; fmt++) |
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| 88 | { |
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| 89 | lflag = 0; |
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| 90 | base = 0; |
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| 91 | sign = 0; |
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| 92 | width = 0; |
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| 93 | lead = ' '; |
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| 94 | if (*fmt == '%') |
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| 95 | { |
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| 96 | fmt++; |
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| 97 | if (*fmt == '0' ) { |
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| 98 | lead = '0'; |
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| 99 | fmt++; |
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| 100 | } |
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| 101 | while (*fmt >= '0' && *fmt <= '9' ) { |
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| 102 | width *= 10; |
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| 103 | width += (*fmt - '0'); |
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| 104 | fmt++; |
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| 105 | } |
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| 106 | |
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| 107 | if ((c = *fmt) == 'l') |
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| 108 | { |
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| 109 | lflag = 1; |
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| 110 | c = *++fmt; |
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| 111 | } |
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| 112 | switch (c) |
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| 113 | { |
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| 114 | case 'o': case 'O': base = 8; sign = 0; break; |
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| 115 | case 'd': case 'D': base = 10; sign = 1; break; |
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| 116 | case 'u': case 'U': base = 10; sign = 0; break; |
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| 117 | case 'x': case 'X': base = 16; sign = 0; break; |
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| 118 | case 's': |
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| 119 | for (str = va_arg(ap, char *); *str; str++) |
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| 120 | BSP_output_char(*str); |
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| 121 | break; |
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| 122 | case 'c': |
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[a3726b1] | 123 | #if 0 |
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[1bce637] | 124 | #if defined(_TMS320C3x) || defined(_TMS320C4x) |
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| 125 | BSP_output_char(va_arg(ap, int)); |
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| 126 | #else |
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| 127 | BSP_output_char(va_arg(ap, char)); |
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[a3726b1] | 128 | #endif |
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| 129 | #else |
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| 130 | BSP_output_char(va_arg(ap, int)); |
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[1bce637] | 131 | #endif |
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| 132 | break; |
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| 133 | default: |
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| 134 | BSP_output_char(c); |
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| 135 | break; |
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| 136 | } /* switch*/ |
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| 137 | |
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| 138 | if (base) |
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| 139 | printNum(lflag ? va_arg(ap, long int) : (long int)va_arg(ap, int), |
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| 140 | base, sign, width, lead); |
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| 141 | } |
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| 142 | else |
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| 143 | { |
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| 144 | BSP_output_char(*fmt); |
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| 145 | } |
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| 146 | } |
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| 147 | va_end(ap); /* clean up when done */ |
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| 148 | /* _CPU_ISR_Enable(level); */ |
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| 149 | |
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| 150 | } /* printk */ |
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| 151 | |
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