linux.hh revision 2665:a124942bacb8
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#ifndef __LINUX_HH__ 32#define __LINUX_HH__ 33#include "config/full_system.hh" 34 35#if FULL_SYSTEM 36 37class Linux {}; 38 39#else //!FULL_SYSTEM 40 41#include <dirent.h> 42#include <errno.h> 43#include <fcntl.h> // for host open() flags 44#include <string.h> // for memset() 45#include <sys/stat.h> 46#include <sys/types.h> 47#include <unistd.h> 48 49#include "arch/isa_traits.hh" 50#include "sim/syscall_emul.hh" 51 52class TranslatingPort; 53 54/// 55/// This class encapsulates the types, structures, constants, 56/// functions, and syscall-number mappings specific to the Alpha Linux 57/// syscall interface. 58/// 59class Linux { 60 61 public: 62 63 //@{ 64 /// Basic Linux types. 65 typedef uint64_t size_t; 66 typedef uint64_t off_t; 67 typedef int64_t time_t; 68 typedef uint32_t uid_t; 69 typedef uint32_t gid_t; 70 //@} 71 72#if BSD_HOST 73 typedef struct stat hst_stat; 74 typedef struct stat hst_stat64; 75#else 76 typedef struct stat hst_stat ; 77 typedef struct stat64 hst_stat64; 78#endif 79 80 /// Stat buffer. Note that we can't call it 'stat' since that 81 /// gets #defined to something else on some systems. 82 struct tgt_stat { 83 uint32_t st_dev; //!< device 84 uint32_t st_ino; //!< inode 85 uint32_t st_mode; //!< mode 86 uint32_t st_nlink; //!< link count 87 uint32_t st_uid; //!< owner's user ID 88 uint32_t st_gid; //!< owner's group ID 89 uint32_t st_rdev; //!< device number 90 int32_t _pad1; //!< for alignment 91 int64_t st_size; //!< file size in bytes 92 uint64_t st_atimeX; //!< time of last access 93 uint64_t st_mtimeX; //!< time of last modification 94 uint64_t st_ctimeX; //!< time of last status change 95 uint32_t st_blksize; //!< optimal I/O block size 96 int32_t st_blocks; //!< number of blocks allocated 97 uint32_t st_flags; //!< flags 98 uint32_t st_gen; //!< unknown 99 }; 100 101 // same for stat64 102 struct tgt_stat64 { 103 uint64_t st_dev; 104 uint64_t st_ino; 105 uint64_t st_rdev; 106 int64_t st_size; 107 uint64_t st_blocks; 108 109 uint32_t st_mode; 110 uint32_t st_uid; 111 uint32_t st_gid; 112 uint32_t st_blksize; 113 uint32_t st_nlink; 114 uint32_t __pad0; 115 116 uint64_t tgt_st_atime; 117 uint64_t st_atime_nsec; 118 uint64_t tgt_st_mtime; 119 uint64_t st_mtime_nsec; 120 uint64_t tgt_st_ctime; 121 uint64_t st_ctime_nsec; 122 int64_t ___unused[3]; 123 }; 124 125 /// Length of strings in struct utsname (plus 1 for null char). 126 static const int _SYS_NMLN = 65; 127 128 /// Interface struct for uname(). 129 struct utsname { 130 char sysname[_SYS_NMLN]; //!< System name. 131 char nodename[_SYS_NMLN]; //!< Node name. 132 char release[_SYS_NMLN]; //!< OS release. 133 char version[_SYS_NMLN]; //!< OS version. 134 char machine[_SYS_NMLN]; //!< Machine type. 135 }; 136 137 /// Limit struct for getrlimit/setrlimit. 138 struct rlimit { 139 uint64_t rlim_cur; //!< soft limit 140 uint64_t rlim_max; //!< hard limit 141 }; 142 143 /// For gettimeofday(). 144 struct timeval { 145 int64_t tv_sec; //!< seconds 146 int64_t tv_usec; //!< microseconds 147 }; 148 149 // For writev/readv 150 struct tgt_iovec { 151 uint64_t iov_base; // void * 152 uint64_t iov_len; 153 }; 154 155 156 /// For getrusage(). 157 struct rusage { 158 struct timeval ru_utime; //!< user time used 159 struct timeval ru_stime; //!< system time used 160 int64_t ru_maxrss; //!< max rss 161 int64_t ru_ixrss; //!< integral shared memory size 162 int64_t ru_idrss; //!< integral unshared data " 163 int64_t ru_isrss; //!< integral unshared stack " 164 int64_t ru_minflt; //!< page reclaims - total vmfaults 165 int64_t ru_majflt; //!< page faults 166 int64_t ru_nswap; //!< swaps 167 int64_t ru_inblock; //!< block input operations 168 int64_t ru_oublock; //!< block output operations 169 int64_t ru_msgsnd; //!< messages sent 170 int64_t ru_msgrcv; //!< messages received 171 int64_t ru_nsignals; //!< signals received 172 int64_t ru_nvcsw; //!< voluntary context switches 173 int64_t ru_nivcsw; //!< involuntary " 174 }; 175 176 /// Helper function to convert a host stat buffer to a target stat 177 /// buffer. Also copies the target buffer out to the simulated 178 /// memory space. Used by stat(), fstat(), and lstat(). 179#if !BSD_HOST 180 static void 181 copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat *host) 182 { 183 using namespace TheISA; 184 185 TypedBufferArg<Linux::tgt_stat> tgt(addr); 186 187 tgt->st_dev = htog(host->st_dev); 188 tgt->st_ino = htog(host->st_ino); 189 tgt->st_mode = htog(host->st_mode); 190 tgt->st_nlink = htog(host->st_nlink); 191 tgt->st_uid = htog(host->st_uid); 192 tgt->st_gid = htog(host->st_gid); 193 tgt->st_rdev = htog(host->st_rdev); 194 tgt->st_size = htog(host->st_size); 195 tgt->st_atimeX = htog(host->st_atime); 196 tgt->st_mtimeX = htog(host->st_mtime); 197 tgt->st_ctimeX = htog(host->st_ctime); 198 tgt->st_blksize = htog(host->st_blksize); 199 tgt->st_blocks = htog(host->st_blocks); 200 201 tgt.copyOut(mem); 202 } 203#else 204 // Third version for bsd systems which no longer have any support for 205 // the old stat() call and stat() is actually a stat64() 206 static void 207 copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat64 *host) 208 { 209 using namespace TheISA; 210 211 TypedBufferArg<Linux::tgt_stat> tgt(addr); 212 213 tgt->st_dev = htog(host->st_dev); 214 tgt->st_ino = htog(host->st_ino); 215 tgt->st_mode = htog(host->st_mode); 216 tgt->st_nlink = htog(host->st_nlink); 217 tgt->st_uid = htog(host->st_uid); 218 tgt->st_gid = htog(host->st_gid); 219 tgt->st_rdev = htog(host->st_rdev); 220 tgt->st_size = htog(host->st_size); 221 tgt->st_atimeX = htog(host->st_atime); 222 tgt->st_mtimeX = htog(host->st_mtime); 223 tgt->st_ctimeX = htog(host->st_ctime); 224 tgt->st_blksize = htog(host->st_blksize); 225 tgt->st_blocks = htog(host->st_blocks); 226 227 tgt.copyOut(mem); 228 } 229#endif 230 231 232 // Same for stat64 233 static void 234 copyOutStat64Buf(TranslatingPort *mem, int fd, Addr addr, hst_stat64 *host) 235 { 236 using namespace TheISA; 237 238 TypedBufferArg<Linux::tgt_stat64> tgt(addr); 239 240 // fd == 1 checks are because libc does some checks 241 // that the stdout is interactive vs. a file 242 // this makes it work on non-linux systems 243 if (fd == 1) 244 tgt->st_dev = htog((uint64_t)0xA); 245 else 246 tgt->st_dev = htog((uint64_t)host->st_dev); 247 // XXX What about STAT64_HAS_BROKEN_ST_INO ??? 248 tgt->st_ino = htog((uint64_t)host->st_ino); 249 if (fd == 1) 250 tgt->st_rdev = htog((uint64_t)0x880d); 251 else 252 tgt->st_rdev = htog((uint64_t)host->st_rdev); 253 tgt->st_size = htog((int64_t)host->st_size); 254 tgt->st_blocks = htog((uint64_t)host->st_blocks); 255 256 if (fd == 1) 257 tgt->st_mode = htog((uint32_t)0x2190); 258 else 259 tgt->st_mode = htog((uint32_t)host->st_mode); 260 tgt->st_uid = htog((uint32_t)host->st_uid); 261 tgt->st_gid = htog((uint32_t)host->st_gid); 262 tgt->st_blksize = htog((uint32_t)host->st_blksize); 263 tgt->st_nlink = htog((uint32_t)host->st_nlink); 264 tgt->tgt_st_atime = htog((uint64_t)host->st_atime); 265 tgt->tgt_st_mtime = htog((uint64_t)host->st_mtime); 266 tgt->tgt_st_ctime = htog((uint64_t)host->st_ctime); 267#if defined(STAT_HAVE_NSEC) 268 tgt->st_atime_nsec = htog(host->st_atime_nsec); 269 tgt->st_mtime_nsec = htog(host->st_mtime_nsec); 270 tgt->st_ctime_nsec = htog(host->st_ctime_nsec); 271#else 272 tgt->st_atime_nsec = 0; 273 tgt->st_mtime_nsec = 0; 274 tgt->st_ctime_nsec = 0; 275#endif 276 277 tgt.copyOut(mem); 278 } 279 280}; // class Linux 281 282 283#endif // FULL_SYSTEM 284 285#endif // __LINUX_HH__ 286