printk.cc revision 2665
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: Ali Saidi 29 */ 30 31#include <sys/types.h> 32#include <algorithm> 33 34#include "base/trace.hh" 35#include "arch/arguments.hh" 36 37using namespace std; 38 39 40void 41Printk(AlphaISA::AlphaArguments args) 42{ 43 char *p = (char *)args++; 44 45 ios::fmtflags saved_flags = DebugOut().flags(); 46 char old_fill = DebugOut().fill(); 47 int old_precision = DebugOut().precision(); 48 49 while (*p) { 50 switch (*p) { 51 case '%': { 52 bool more = true; 53 bool islong = false; 54 bool leftjustify = false; 55 bool format = false; 56 bool zero = false; 57 int width = 0; 58 while (more && *++p) { 59 switch (*p) { 60 case 'l': 61 case 'L': 62 islong = true; 63 break; 64 case '-': 65 leftjustify = true; 66 break; 67 case '#': 68 format = true; 69 break; 70 case '0': 71 if (width) 72 width *= 10; 73 else 74 zero = true; 75 break; 76 default: 77 if (*p >= '1' && *p <= '9') 78 width = 10 * width + *p - '0'; 79 else 80 more = false; 81 break; 82 } 83 } 84 85 bool hexnum = false; 86 bool octal = false; 87 bool sign = false; 88 switch (*p) { 89 case 'X': 90 case 'x': 91 hexnum = true; 92 break; 93 case 'O': 94 case 'o': 95 octal = true; 96 break; 97 case 'D': 98 case 'd': 99 sign = true; 100 break; 101 case 'P': 102 format = true; 103 case 'p': 104 hexnum = true; 105 break; 106 } 107 108 switch (*p) { 109 case 'D': 110 case 'd': 111 case 'U': 112 case 'u': 113 case 'X': 114 case 'x': 115 case 'O': 116 case 'o': 117 case 'P': 118 case 'p': { 119 if (hexnum) 120 DebugOut() << hex; 121 122 if (octal) 123 DebugOut() << oct; 124 125 if (format) { 126 if (!zero) 127 DebugOut().setf(ios::showbase); 128 else { 129 if (hexnum) { 130 DebugOut() << "0x"; 131 width -= 2; 132 } else if (octal) { 133 DebugOut() << "0"; 134 width -= 1; 135 } 136 } 137 } 138 139 if (zero) 140 DebugOut().fill('0'); 141 142 if (width > 0) 143 DebugOut().width(width); 144 145 if (leftjustify && !zero) 146 DebugOut().setf(ios::left); 147 148 if (sign) { 149 if (islong) 150 DebugOut() << (int64_t)args; 151 else 152 DebugOut() << (int32_t)args; 153 } else { 154 if (islong) 155 DebugOut() << (uint64_t)args; 156 else 157 DebugOut() << (uint32_t)args; 158 } 159 160 if (zero) 161 DebugOut().fill(' '); 162 163 if (width > 0) 164 DebugOut().width(0); 165 166 DebugOut() << dec; 167 168 ++args; 169 } 170 break; 171 172 case 's': { 173 char *s = (char *)args; 174 if (!s) 175 s = "<NULL>"; 176 177 if (width > 0) 178 DebugOut().width(width); 179 if (leftjustify) 180 DebugOut().setf(ios::left); 181 182 DebugOut() << s; 183 ++args; 184 } 185 break; 186 case 'C': 187 case 'c': { 188 uint64_t mask = (*p == 'C') ? 0xffL : 0x7fL; 189 uint64_t num; 190 int width; 191 192 if (islong) { 193 num = (uint64_t)args; 194 width = sizeof(uint64_t); 195 } else { 196 num = (uint32_t)args; 197 width = sizeof(uint32_t); 198 } 199 200 while (width-- > 0) { 201 char c = (char)(num & mask); 202 if (c) 203 DebugOut() << c; 204 num >>= 8; 205 } 206 207 ++args; 208 } 209 break; 210 case 'b': { 211 uint64_t n = (uint64_t)args++; 212 char *s = (char *)args++; 213 DebugOut() << s << ": " << n; 214 } 215 break; 216 case 'n': 217 case 'N': { 218 args += 2; 219#if 0 220 uint64_t n = (uint64_t)args++; 221 struct reg_values *rv = (struct reg_values *)args++; 222#endif 223 } 224 break; 225 case 'r': 226 case 'R': { 227 args += 2; 228#if 0 229 uint64_t n = (uint64_t)args++; 230 struct reg_desc *rd = (struct reg_desc *)args++; 231#endif 232 } 233 break; 234 case '%': 235 DebugOut() << '%'; 236 break; 237 } 238 ++p; 239 } 240 break; 241 case '\n': 242 DebugOut() << endl; 243 ++p; 244 break; 245 case '\r': 246 ++p; 247 if (*p != '\n') 248 DebugOut() << endl; 249 break; 250 251 default: { 252 size_t len = strcspn(p, "%\n\r\0"); 253 DebugOut().write(p, len); 254 p += len; 255 } 256 } 257 } 258 259 DebugOut().flags(saved_flags); 260 DebugOut().fill(old_fill); 261 DebugOut().precision(old_precision); 262} 263 264