printk.cc revision 3535:af201ccd2e51
1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 * Ali Saidi 30 */ 31 32#include <sys/types.h> 33#include <algorithm> 34 35#include "base/trace.hh" 36#include "arch/arguments.hh" 37 38using namespace std; 39 40 41void 42Printk(TheISA::Arguments args) 43{ 44 char *p = (char *)args++; 45 46 ios::fmtflags saved_flags = DebugOut().flags(); 47 char old_fill = DebugOut().fill(); 48 int old_precision = DebugOut().precision(); 49 50 while (*p) { 51 switch (*p) { 52 case '%': { 53 bool more = true; 54 bool islong = false; 55 bool leftjustify = false; 56 bool format = false; 57 bool zero = false; 58 int width = 0; 59 while (more && *++p) { 60 switch (*p) { 61 case 'l': 62 case 'L': 63 islong = true; 64 break; 65 case '-': 66 leftjustify = true; 67 break; 68 case '#': 69 format = true; 70 break; 71 case '0': 72 if (width) 73 width *= 10; 74 else 75 zero = true; 76 break; 77 default: 78 if (*p >= '1' && *p <= '9') 79 width = 10 * width + *p - '0'; 80 else 81 more = false; 82 break; 83 } 84 } 85 86 bool hexnum = false; 87 bool octal = false; 88 bool sign = false; 89 switch (*p) { 90 case 'X': 91 case 'x': 92 hexnum = true; 93 break; 94 case 'O': 95 case 'o': 96 octal = true; 97 break; 98 case 'D': 99 case 'd': 100 sign = true; 101 break; 102 case 'P': 103 format = true; 104 case 'p': 105 hexnum = true; 106 break; 107 } 108 109 switch (*p) { 110 case 'D': 111 case 'd': 112 case 'U': 113 case 'u': 114 case 'X': 115 case 'x': 116 case 'O': 117 case 'o': 118 case 'P': 119 case 'p': { 120 if (hexnum) 121 DebugOut() << hex; 122 123 if (octal) 124 DebugOut() << oct; 125 126 if (format) { 127 if (!zero) 128 DebugOut().setf(ios::showbase); 129 else { 130 if (hexnum) { 131 DebugOut() << "0x"; 132 width -= 2; 133 } else if (octal) { 134 DebugOut() << "0"; 135 width -= 1; 136 } 137 } 138 } 139 140 if (zero) 141 DebugOut().fill('0'); 142 143 if (width > 0) 144 DebugOut().width(width); 145 146 if (leftjustify && !zero) 147 DebugOut().setf(ios::left); 148 149 if (sign) { 150 if (islong) 151 DebugOut() << (int64_t)args; 152 else 153 DebugOut() << (int32_t)args; 154 } else { 155 if (islong) 156 DebugOut() << (uint64_t)args; 157 else 158 DebugOut() << (uint32_t)args; 159 } 160 161 if (zero) 162 DebugOut().fill(' '); 163 164 if (width > 0) 165 DebugOut().width(0); 166 167 DebugOut() << dec; 168 169 ++args; 170 } 171 break; 172 173 case 's': { 174 char *s = (char *)args; 175 if (!s) 176 s = "<NULL>"; 177 178 if (width > 0) 179 DebugOut().width(width); 180 if (leftjustify) 181 DebugOut().setf(ios::left); 182 183 DebugOut() << s; 184 ++args; 185 } 186 break; 187 case 'C': 188 case 'c': { 189 uint64_t mask = (*p == 'C') ? 0xffL : 0x7fL; 190 uint64_t num; 191 int width; 192 193 if (islong) { 194 num = (uint64_t)args; 195 width = sizeof(uint64_t); 196 } else { 197 num = (uint32_t)args; 198 width = sizeof(uint32_t); 199 } 200 201 while (width-- > 0) { 202 char c = (char)(num & mask); 203 if (c) 204 DebugOut() << c; 205 num >>= 8; 206 } 207 208 ++args; 209 } 210 break; 211 case 'b': { 212 uint64_t n = (uint64_t)args++; 213 char *s = (char *)args++; 214 DebugOut() << s << ": " << n; 215 } 216 break; 217 case 'n': 218 case 'N': { 219 args += 2; 220#if 0 221 uint64_t n = (uint64_t)args++; 222 struct reg_values *rv = (struct reg_values *)args++; 223#endif 224 } 225 break; 226 case 'r': 227 case 'R': { 228 args += 2; 229#if 0 230 uint64_t n = (uint64_t)args++; 231 struct reg_desc *rd = (struct reg_desc *)args++; 232#endif 233 } 234 break; 235 case '%': 236 DebugOut() << '%'; 237 break; 238 } 239 ++p; 240 } 241 break; 242 case '\n': 243 DebugOut() << endl; 244 ++p; 245 break; 246 case '\r': 247 ++p; 248 if (*p != '\n') 249 DebugOut() << endl; 250 break; 251 252 default: { 253 size_t len = strcspn(p, "%\n\r\0"); 254 DebugOut().write(p, len); 255 p += len; 256 } 257 } 258 } 259 260 DebugOut().flags(saved_flags); 261 DebugOut().fill(old_fill); 262 DebugOut().precision(old_precision); 263} 264 265