linux.hh revision 2553
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 }; 134 135 136 /// Resource enumeration for getrlimit(). 137 enum rlimit_resources { 138 TGT_RLIMIT_CPU = 0, 139 TGT_RLIMIT_FSIZE = 1, 140 TGT_RLIMIT_DATA = 2, 141 TGT_RLIMIT_STACK = 3, 142 TGT_RLIMIT_CORE = 4, 143 TGT_RLIMIT_RSS = 5, 144 TGT_RLIMIT_NOFILE = 6, 145 TGT_RLIMIT_AS = 7, 146 TGT_RLIMIT_VMEM = 7, 147 TGT_RLIMIT_NPROC = 8, 148 TGT_RLIMIT_MEMLOCK = 9, 149 TGT_RLIMIT_LOCKS = 10 150 }; 151 152 /// Limit struct for getrlimit/setrlimit. 153 struct rlimit { 154 uint64_t rlim_cur; //!< soft limit 155 uint64_t rlim_max; //!< hard limit 156 }; 157 158 /// For gettimeofday(). 159 struct timeval { 160 int64_t tv_sec; //!< seconds 161 int64_t tv_usec; //!< microseconds 162 }; 163 164 // For writev/readv 165 struct tgt_iovec { 166 uint64_t iov_base; // void * 167 uint64_t iov_len; 168 }; 169 170 171 /// For getrusage(). 172 struct rusage { 173 struct timeval ru_utime; //!< user time used 174 struct timeval ru_stime; //!< system time used 175 int64_t ru_maxrss; //!< max rss 176 int64_t ru_ixrss; //!< integral shared memory size 177 int64_t ru_idrss; //!< integral unshared data " 178 int64_t ru_isrss; //!< integral unshared stack " 179 int64_t ru_minflt; //!< page reclaims - total vmfaults 180 int64_t ru_majflt; //!< page faults 181 int64_t ru_nswap; //!< swaps 182 int64_t ru_inblock; //!< block input operations 183 int64_t ru_oublock; //!< block output operations 184 int64_t ru_msgsnd; //!< messages sent 185 int64_t ru_msgrcv; //!< messages received 186 int64_t ru_nsignals; //!< signals received 187 int64_t ru_nvcsw; //!< voluntary context switches 188 int64_t ru_nivcsw; //!< involuntary " 189 }; 190 191 /// Helper function to convert a host stat buffer to a target stat 192 /// buffer. Also copies the target buffer out to the simulated 193 /// memory space. Used by stat(), fstat(), and lstat(). 194#if !BSD_HOST 195 static void 196 copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat *host) 197 { 198 using namespace TheISA; 199 200 TypedBufferArg<Linux::tgt_stat> tgt(addr); 201 202 tgt->st_dev = htog(host->st_dev); 203 tgt->st_ino = htog(host->st_ino); 204 tgt->st_mode = htog(host->st_mode); 205 tgt->st_nlink = htog(host->st_nlink); 206 tgt->st_uid = htog(host->st_uid); 207 tgt->st_gid = htog(host->st_gid); 208 tgt->st_rdev = htog(host->st_rdev); 209 tgt->st_size = htog(host->st_size); 210 tgt->st_atimeX = htog(host->st_atime); 211 tgt->st_mtimeX = htog(host->st_mtime); 212 tgt->st_ctimeX = htog(host->st_ctime); 213 tgt->st_blksize = htog(host->st_blksize); 214 tgt->st_blocks = htog(host->st_blocks); 215 216 tgt.copyOut(mem); 217 } 218#else 219 // Third version for bsd systems which no longer have any support for 220 // the old stat() call and stat() is actually a stat64() 221 static void 222 copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat64 *host) 223 { 224 using namespace TheISA; 225 226 TypedBufferArg<Linux::tgt_stat> tgt(addr); 227 228 tgt->st_dev = htog(host->st_dev); 229 tgt->st_ino = htog(host->st_ino); 230 tgt->st_mode = htog(host->st_mode); 231 tgt->st_nlink = htog(host->st_nlink); 232 tgt->st_uid = htog(host->st_uid); 233 tgt->st_gid = htog(host->st_gid); 234 tgt->st_rdev = htog(host->st_rdev); 235 tgt->st_size = htog(host->st_size); 236 tgt->st_atimeX = htog(host->st_atime); 237 tgt->st_mtimeX = htog(host->st_mtime); 238 tgt->st_ctimeX = htog(host->st_ctime); 239 tgt->st_blksize = htog(host->st_blksize); 240 tgt->st_blocks = htog(host->st_blocks); 241 242 tgt.copyOut(mem); 243 } 244#endif 245 246 247 // Same for stat64 248 static void 249 copyOutStat64Buf(TranslatingPort *mem, int fd, Addr addr, hst_stat64 *host) 250 { 251 using namespace TheISA; 252 253 TypedBufferArg<Linux::tgt_stat64> tgt(addr); 254 255 // fd == 1 checks are because libc does some checks 256 // that the stdout is interactive vs. a file 257 // this makes it work on non-linux systems 258 if (fd == 1) 259 tgt->st_dev = htog((uint64_t)0xA); 260 else 261 tgt->st_dev = htog((uint64_t)host->st_dev); 262 // XXX What about STAT64_HAS_BROKEN_ST_INO ??? 263 tgt->st_ino = htog((uint64_t)host->st_ino); 264 if (fd == 1) 265 tgt->st_rdev = htog((uint64_t)0x880d); 266 else 267 tgt->st_rdev = htog((uint64_t)host->st_rdev); 268 tgt->st_size = htog((int64_t)host->st_size); 269 tgt->st_blocks = htog((uint64_t)host->st_blocks); 270 271 if (fd == 1) 272 tgt->st_mode = htog((uint32_t)0x2190); 273 else 274 tgt->st_mode = htog((uint32_t)host->st_mode); 275 tgt->st_uid = htog((uint32_t)host->st_uid); 276 tgt->st_gid = htog((uint32_t)host->st_gid); 277 tgt->st_blksize = htog((uint32_t)host->st_blksize); 278 tgt->st_nlink = htog((uint32_t)host->st_nlink); 279 tgt->tgt_st_atime = htog((uint64_t)host->st_atime); 280 tgt->tgt_st_mtime = htog((uint64_t)host->st_mtime); 281 tgt->tgt_st_ctime = htog((uint64_t)host->st_ctime); 282#if defined(STAT_HAVE_NSEC) 283 tgt->st_atime_nsec = htog(host->st_atime_nsec); 284 tgt->st_mtime_nsec = htog(host->st_mtime_nsec); 285 tgt->st_ctime_nsec = htog(host->st_ctime_nsec); 286#else 287 tgt->st_atime_nsec = 0; 288 tgt->st_mtime_nsec = 0; 289 tgt->st_ctime_nsec = 0; 290#endif 291 292 tgt.copyOut(mem); 293 } 294 295}; // class Linux 296 297 298#endif // FULL_SYSTEM 299 300#endif // __LINUX_HH__ 301