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1 | jermar | 1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | #include <putchar.h> |
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30 | #include <print.h> |
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31 | #include <synch/spinlock.h> |
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40 | jermar | 32 | #include <arch/arg.h> |
115 | jermar | 33 | #include <arch/asm.h> |
1 | jermar | 34 | |
40 | jermar | 35 | |
61 | decky | 36 | static char digits[] = "0123456789abcdef"; /**< Hexadecimal characters */ |
37 | static spinlock_t printflock; /**< printf spinlock */ |
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1 | jermar | 38 | |
61 | decky | 39 | |
40 | /** Print NULL terminated string |
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41 | * |
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42 | * Print characters from str using putchar() until |
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43 | * \x00 character is reached. |
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44 | * |
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45 | * @param str Characters to print. |
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46 | * |
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47 | */ |
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63 | decky | 48 | void print_str(const char *str) |
1 | jermar | 49 | { |
68 | decky | 50 | int i = 0; |
1 | jermar | 51 | char c; |
68 | decky | 52 | |
1 | jermar | 53 | while (c = str[i++]) |
68 | decky | 54 | putchar(c); |
1 | jermar | 55 | } |
56 | |||
57 | |||
61 | decky | 58 | /** Print hexadecimal digits |
59 | * |
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60 | * Print fixed count of hexadecimal digits from |
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61 | * the number num. The digits are printed in |
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62 | * natural left-to-right order starting with |
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63 | * the width-th digit. |
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64 | * |
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65 | * @param num Number containing digits. |
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66 | * @param width Count of digits to print. |
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67 | * |
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1 | jermar | 68 | */ |
63 | decky | 69 | void print_fixed_hex(const __native num, const int width) |
1 | jermar | 70 | { |
71 | int i; |
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72 | |||
73 | for (i = width*8 - 4; i >= 0; i -= 4) |
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74 | putchar(digits[(num>>i) & 0xf]); |
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75 | } |
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76 | |||
61 | decky | 77 | |
78 | /** Print number in given base |
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79 | * |
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80 | * Print significant digits of a number in given |
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81 | * base. |
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82 | * |
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83 | * @param num Number to print. |
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84 | * @param base Base to print the number in (should |
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85 | * be in range 2 .. 16). |
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86 | * |
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1 | jermar | 87 | */ |
68 | decky | 88 | void print_number(const __native num, const unsigned int base) |
63 | decky | 89 | { |
90 | int val = num; |
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42 | jermar | 91 | char d[sizeof(__native)*8+1]; /* this is good enough even for base == 2 */ |
68 | decky | 92 | int i = sizeof(__native)*8-1; |
93 | |||
1 | jermar | 94 | do { |
63 | decky | 95 | d[i--] = digits[val % base]; |
96 | } while (val /= base); |
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1 | jermar | 97 | |
42 | jermar | 98 | d[sizeof(__native)*8] = 0; |
1 | jermar | 99 | print_str(&d[i + 1]); |
100 | } |
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101 | |||
61 | decky | 102 | |
103 | /** General formatted text print |
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104 | * |
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105 | * Print text formatted according the fmt parameter |
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106 | * and variant arguments. Each formatting directive |
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107 | * begins with % (percentage) character and one of the |
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108 | * following character: |
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109 | * |
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110 | * % Prints the percentage character. |
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66 | jermar | 111 | * s The next variant argument is treated as char* |
61 | decky | 112 | * and printed as a NULL terminated string. |
66 | jermar | 113 | * c The next variant argument is treated as a single char. |
77 | jermar | 114 | * p The next variant argument is treated as a maximum |
115 | * bit-width integer with respect to architecture |
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116 | * and printed in full hexadecimal width. |
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117 | * P As with 'p', but '0x' is prefixed. |
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118 | * q The next variant argument is treated as a 64b integer |
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119 | * and printed in full hexadecimal width. |
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120 | * Q As with 'q', but '0x' is prefixed. |
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66 | jermar | 121 | * l The next variant argument is treated as a 32b integer |
61 | decky | 122 | * and printed in full hexadecimal width. |
123 | * L As with 'l', but '0x' is prefixed. |
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66 | jermar | 124 | * w The next variant argument is treated as a 16b integer |
61 | decky | 125 | * and printed in full hexadecimal width. |
126 | * W As with 'w', but '0x' is prefixed. |
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66 | jermar | 127 | * b The next variant argument is treated as a 8b integer |
61 | decky | 128 | * and printed in full hexadecimal width. |
129 | * N As with 'b', but '0x' is prefixed. |
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66 | jermar | 130 | * d The next variant argument is treated as integer |
61 | decky | 131 | * and printed in standard decimal format (only significant |
132 | * digits). |
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66 | jermar | 133 | * x The next variant argument is treated as integer |
61 | decky | 134 | * and printed in standard hexadecimal format (only significant |
135 | * digits). |
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136 | * X As with 'x', but '0x' is prefixed. |
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137 | * |
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138 | * All other characters from fmt except the formatting directives |
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139 | * are printed in verbatim. |
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140 | * |
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141 | * @param fmt Formatting NULL terminated string. |
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142 | * |
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1 | jermar | 143 | */ |
63 | decky | 144 | void printf(const char *fmt, ...) |
1 | jermar | 145 | { |
40 | jermar | 146 | int irqpri, i = 0; |
147 | va_list ap; |
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148 | char c; |
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1 | jermar | 149 | |
40 | jermar | 150 | va_start(ap, fmt); |
151 | |||
1 | jermar | 152 | irqpri = cpu_priority_high(); |
153 | spinlock_lock(&printflock); |
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40 | jermar | 154 | |
1 | jermar | 155 | while (c = fmt[i++]) { |
156 | switch (c) { |
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157 | |||
158 | /* control character */ |
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159 | case '%': |
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160 | switch (c = fmt[i++]) { |
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161 | |||
162 | /* percentile itself */ |
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163 | case '%': |
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164 | break; |
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165 | |||
166 | /* |
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167 | * String and character conversions. |
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168 | */ |
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169 | case 's': |
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40 | jermar | 170 | print_str(va_arg(ap, char_ptr)); |
1 | jermar | 171 | goto loop; |
172 | |||
173 | case 'c': |
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42 | jermar | 174 | c = (char) va_arg(ap, int); |
1 | jermar | 175 | break; |
176 | |||
177 | /* |
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178 | * Hexadecimal conversions with fixed width. |
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179 | */ |
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77 | jermar | 180 | case 'P': |
181 | print_str("0x"); |
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182 | case 'p': |
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183 | print_fixed_hex(va_arg(ap, __native), sizeof(__native)); |
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184 | goto loop; |
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185 | |||
186 | case 'Q': |
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187 | print_str("0x"); |
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188 | case 'q': |
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189 | print_fixed_hex(va_arg(ap, __native), INT64); |
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190 | goto loop; |
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191 | |||
1 | jermar | 192 | case 'L': |
193 | print_str("0x"); |
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194 | case 'l': |
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40 | jermar | 195 | print_fixed_hex(va_arg(ap, __native), INT32); |
1 | jermar | 196 | goto loop; |
197 | |||
198 | case 'W': |
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199 | print_str("0x"); |
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200 | case 'w': |
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40 | jermar | 201 | print_fixed_hex(va_arg(ap, __native), INT16); |
1 | jermar | 202 | goto loop; |
203 | |||
204 | case 'B': |
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205 | print_str("0x"); |
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206 | case 'b': |
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40 | jermar | 207 | print_fixed_hex(va_arg(ap, __native), INT8); |
1 | jermar | 208 | goto loop; |
209 | |||
210 | /* |
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211 | * Decimal and hexadecimal conversions. |
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212 | */ |
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213 | case 'd': |
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40 | jermar | 214 | print_number(va_arg(ap, __native), 10); |
1 | jermar | 215 | goto loop; |
216 | |||
217 | case 'X': |
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218 | print_str("0x"); |
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219 | case 'x': |
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40 | jermar | 220 | print_number(va_arg(ap, __native), 16); |
1 | jermar | 221 | goto loop; |
222 | |||
223 | /* |
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224 | * Bad formatting. |
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225 | */ |
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226 | default: |
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227 | goto out; |
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228 | } |
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229 | |||
230 | default: putchar(c); |
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231 | } |
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232 | |||
233 | loop: |
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234 | ; |
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235 | } |
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236 | |||
237 | out: |
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238 | spinlock_unlock(&printflock); |
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239 | cpu_priority_restore(irqpri); |
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40 | jermar | 240 | |
241 | va_end(ap); |
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1 | jermar | 242 | } |