linux.hh revision 2632:1bb2f91485ea
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 29#ifndef __LINUX_HH__ 30#define __LINUX_HH__ 31#include "config/full_system.hh" 32 33#if FULL_SYSTEM 34 35class Linux {}; 36 37#else //!FULL_SYSTEM 38 39#include <dirent.h> 40#include <errno.h> 41#include <fcntl.h> // for host open() flags 42#include <string.h> // for memset() 43#include <sys/stat.h> 44#include <sys/types.h> 45#include <unistd.h> 46 47#include "arch/isa_traits.hh" 48#include "sim/syscall_emul.hh" 49 50class TranslatingPort; 51 52/// 53/// This class encapsulates the types, structures, constants, 54/// functions, and syscall-number mappings specific to the Alpha Linux 55/// syscall interface. 56/// 57class Linux { 58 59 public: 60 61 //@{ 62 /// Basic Linux types. 63 typedef uint64_t size_t; 64 typedef uint64_t off_t; 65 typedef int64_t time_t; 66 typedef uint32_t uid_t; 67 typedef uint32_t gid_t; 68 //@} 69 70#if BSD_HOST 71 typedef struct stat hst_stat; 72 typedef struct stat hst_stat64; 73#else 74 typedef struct stat hst_stat ; 75 typedef struct stat64 hst_stat64; 76#endif 77 78 /// Stat buffer. Note that we can't call it 'stat' since that 79 /// gets #defined to something else on some systems. 80 struct tgt_stat { 81 uint32_t st_dev; //!< device 82 uint32_t st_ino; //!< inode 83 uint32_t st_mode; //!< mode 84 uint32_t st_nlink; //!< link count 85 uint32_t st_uid; //!< owner's user ID 86 uint32_t st_gid; //!< owner's group ID 87 uint32_t st_rdev; //!< device number 88 int32_t _pad1; //!< for alignment 89 int64_t st_size; //!< file size in bytes 90 uint64_t st_atimeX; //!< time of last access 91 uint64_t st_mtimeX; //!< time of last modification 92 uint64_t st_ctimeX; //!< time of last status change 93 uint32_t st_blksize; //!< optimal I/O block size 94 int32_t st_blocks; //!< number of blocks allocated 95 uint32_t st_flags; //!< flags 96 uint32_t st_gen; //!< unknown 97 }; 98 99 // same for stat64 100 struct tgt_stat64 { 101 uint64_t st_dev; 102 uint64_t st_ino; 103 uint64_t st_rdev; 104 int64_t st_size; 105 uint64_t st_blocks; 106 107 uint32_t st_mode; 108 uint32_t st_uid; 109 uint32_t st_gid; 110 uint32_t st_blksize; 111 uint32_t st_nlink; 112 uint32_t __pad0; 113 114 uint64_t tgt_st_atime; 115 uint64_t st_atime_nsec; 116 uint64_t tgt_st_mtime; 117 uint64_t st_mtime_nsec; 118 uint64_t tgt_st_ctime; 119 uint64_t st_ctime_nsec; 120 int64_t ___unused[3]; 121 }; 122 123 /// Length of strings in struct utsname (plus 1 for null char). 124 static const int _SYS_NMLN = 65; 125 126 /// Interface struct for uname(). 127 struct utsname { 128 char sysname[_SYS_NMLN]; //!< System name. 129 char nodename[_SYS_NMLN]; //!< Node name. 130 char release[_SYS_NMLN]; //!< OS release. 131 char version[_SYS_NMLN]; //!< OS version. 132 char machine[_SYS_NMLN]; //!< Machine type. 133 }; 134 135 /// Limit struct for getrlimit/setrlimit. 136 struct rlimit { 137 uint64_t rlim_cur; //!< soft limit 138 uint64_t rlim_max; //!< hard limit 139 }; 140 141 /// For gettimeofday(). 142 struct timeval { 143 int64_t tv_sec; //!< seconds 144 int64_t tv_usec; //!< microseconds 145 }; 146 147 // For writev/readv 148 struct tgt_iovec { 149 uint64_t iov_base; // void * 150 uint64_t iov_len; 151 }; 152 153 154 /// For getrusage(). 155 struct rusage { 156 struct timeval ru_utime; //!< user time used 157 struct timeval ru_stime; //!< system time used 158 int64_t ru_maxrss; //!< max rss 159 int64_t ru_ixrss; //!< integral shared memory size 160 int64_t ru_idrss; //!< integral unshared data " 161 int64_t ru_isrss; //!< integral unshared stack " 162 int64_t ru_minflt; //!< page reclaims - total vmfaults 163 int64_t ru_majflt; //!< page faults 164 int64_t ru_nswap; //!< swaps 165 int64_t ru_inblock; //!< block input operations 166 int64_t ru_oublock; //!< block output operations 167 int64_t ru_msgsnd; //!< messages sent 168 int64_t ru_msgrcv; //!< messages received 169 int64_t ru_nsignals; //!< signals received 170 int64_t ru_nvcsw; //!< voluntary context switches 171 int64_t ru_nivcsw; //!< involuntary " 172 }; 173 174 /// Helper function to convert a host stat buffer to a target stat 175 /// buffer. Also copies the target buffer out to the simulated 176 /// memory space. Used by stat(), fstat(), and lstat(). 177#if !BSD_HOST 178 static void 179 copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat *host) 180 { 181 using namespace TheISA; 182 183 TypedBufferArg<Linux::tgt_stat> tgt(addr); 184 185 tgt->st_dev = htog(host->st_dev); 186 tgt->st_ino = htog(host->st_ino); 187 tgt->st_mode = htog(host->st_mode); 188 tgt->st_nlink = htog(host->st_nlink); 189 tgt->st_uid = htog(host->st_uid); 190 tgt->st_gid = htog(host->st_gid); 191 tgt->st_rdev = htog(host->st_rdev); 192 tgt->st_size = htog(host->st_size); 193 tgt->st_atimeX = htog(host->st_atime); 194 tgt->st_mtimeX = htog(host->st_mtime); 195 tgt->st_ctimeX = htog(host->st_ctime); 196 tgt->st_blksize = htog(host->st_blksize); 197 tgt->st_blocks = htog(host->st_blocks); 198 199 tgt.copyOut(mem); 200 } 201#else 202 // Third version for bsd systems which no longer have any support for 203 // the old stat() call and stat() is actually a stat64() 204 static void 205 copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat64 *host) 206 { 207 using namespace TheISA; 208 209 TypedBufferArg<Linux::tgt_stat> tgt(addr); 210 211 tgt->st_dev = htog(host->st_dev); 212 tgt->st_ino = htog(host->st_ino); 213 tgt->st_mode = htog(host->st_mode); 214 tgt->st_nlink = htog(host->st_nlink); 215 tgt->st_uid = htog(host->st_uid); 216 tgt->st_gid = htog(host->st_gid); 217 tgt->st_rdev = htog(host->st_rdev); 218 tgt->st_size = htog(host->st_size); 219 tgt->st_atimeX = htog(host->st_atime); 220 tgt->st_mtimeX = htog(host->st_mtime); 221 tgt->st_ctimeX = htog(host->st_ctime); 222 tgt->st_blksize = htog(host->st_blksize); 223 tgt->st_blocks = htog(host->st_blocks); 224 225 tgt.copyOut(mem); 226 } 227#endif 228 229 230 // Same for stat64 231 static void 232 copyOutStat64Buf(TranslatingPort *mem, int fd, Addr addr, hst_stat64 *host) 233 { 234 using namespace TheISA; 235 236 TypedBufferArg<Linux::tgt_stat64> tgt(addr); 237 238 // fd == 1 checks are because libc does some checks 239 // that the stdout is interactive vs. a file 240 // this makes it work on non-linux systems 241 if (fd == 1) 242 tgt->st_dev = htog((uint64_t)0xA); 243 else 244 tgt->st_dev = htog((uint64_t)host->st_dev); 245 // XXX What about STAT64_HAS_BROKEN_ST_INO ??? 246 tgt->st_ino = htog((uint64_t)host->st_ino); 247 if (fd == 1) 248 tgt->st_rdev = htog((uint64_t)0x880d); 249 else 250 tgt->st_rdev = htog((uint64_t)host->st_rdev); 251 tgt->st_size = htog((int64_t)host->st_size); 252 tgt->st_blocks = htog((uint64_t)host->st_blocks); 253 254 if (fd == 1) 255 tgt->st_mode = htog((uint32_t)0x2190); 256 else 257 tgt->st_mode = htog((uint32_t)host->st_mode); 258 tgt->st_uid = htog((uint32_t)host->st_uid); 259 tgt->st_gid = htog((uint32_t)host->st_gid); 260 tgt->st_blksize = htog((uint32_t)host->st_blksize); 261 tgt->st_nlink = htog((uint32_t)host->st_nlink); 262 tgt->tgt_st_atime = htog((uint64_t)host->st_atime); 263 tgt->tgt_st_mtime = htog((uint64_t)host->st_mtime); 264 tgt->tgt_st_ctime = htog((uint64_t)host->st_ctime); 265#if defined(STAT_HAVE_NSEC) 266 tgt->st_atime_nsec = htog(host->st_atime_nsec); 267 tgt->st_mtime_nsec = htog(host->st_mtime_nsec); 268 tgt->st_ctime_nsec = htog(host->st_ctime_nsec); 269#else 270 tgt->st_atime_nsec = 0; 271 tgt->st_mtime_nsec = 0; 272 tgt->st_ctime_nsec = 0; 273#endif 274 275 tgt.copyOut(mem); 276 } 277 278}; // class Linux 279 280 281#endif // FULL_SYSTEM 282 283#endif // __LINUX_HH__ 284