src/arch/power/linux/process.cc

   1 /*
   2  * Copyright (c) 2003-2005 The Regents of The University of Michigan
   3  * Copyright (c) 2007-2008 The Florida State University
   4  * Copyright (c) 2009 The University of Edinburgh
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions are
   9  * met: redistributions of source code must retain the above copyright
  10  * notice, this list of conditions and the following disclaimer;
  11  * redistributions in binary form must reproduce the above copyright
  12  * notice, this list of conditions and the following disclaimer in the
  13  * documentation and/or other materials provided with the distribution;
  14  * neither the name of the copyright holders nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * Authors: Korey Sewell
  31  *          Stephen Hines
  32  *          Timothy M. Jones
  33  */
  34
  35 #include "arch/power/linux/process.hh"
  36
  37 #include "arch/power/isa_traits.hh"
  38 #include "arch/power/linux/linux.hh"
  39 #include "base/loader/object_file.hh"
  40 #include "base/trace.hh"
  41 #include "cpu/thread_context.hh"
  42 #include "kern/linux/linux.hh"
  43 #include "sim/process.hh"
  44 #include "sim/syscall_desc.hh"
  45 #include "sim/syscall_emul.hh"
  46 #include "sim/system.hh"
  47
  48 using namespace std;
  49 using namespace PowerISA;
  50
  51 namespace
  52 {
  53
  54 class PowerLinuxObjectFileLoader : public Process::Loader
  55 {
  56   public:
  57     Process *
  58     load(ProcessParams *params, ObjectFile *obj_file) override
  59     {
  60         if (obj_file->getArch() != ObjectFile::Power)
  61             return nullptr;
  62
  63         auto opsys = obj_file->getOpSys();
  64
  65         if (opsys == ObjectFile::UnknownOpSys) {
  66             warn("Unknown operating system; assuming Linux.");
  67             opsys = ObjectFile::Linux;
  68         }
  69
  70         if (opsys != ObjectFile::Linux)
  71             return nullptr;
  72
  73         return new PowerLinuxProcess(params, obj_file);
  74     }
  75 };
  76
  77 PowerLinuxObjectFileLoader loader;
  78
  79 } // anonymous namespace
  80
  81 /// Target uname() handler.
  82 static SyscallReturn
  83 unameFunc(SyscallDesc *desc, int callnum, ThreadContext *tc)
  84 {
  85     int index = 0;
  86     auto process = tc->getProcessPtr();
  87     TypedBufferArg<Linux::utsname> name(process->getSyscallArg(tc, index));
  88
  89     strcpy(name->sysname, "Linux");
  90     strcpy(name->nodename, "sim.gem5.org");
  91     strcpy(name->release, process->release.c_str());
  92     strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
  93     strcpy(name->machine, "power");
  94
  95     name.copyOut(tc->getVirtProxy());
  96     return 0;
  97 }
  98
  99 SyscallDescABI<DefaultSyscallABI> PowerLinuxProcess::syscallDescs[] = {
 100     /*  0 */ { "syscall" },
 101     /*  1 */ { "exit", exitFunc },
 102     /*  2 */ { "fork" },
 103     /*  3 */ { "read", readFunc<PowerLinux> },
 104     /*  4 */ { "write", writeFunc<PowerLinux> },
 105     /*  5 */ { "open", openFunc<PowerLinux> },
 106     /*  6 */ { "close", closeFunc },
 107     /*  7 */ { "waitpid" }, //???
 108     /*  8 */ { "creat" },
 109     /*  9 */ { "link" },
 110     /* 10 */ { "unlink", unlinkFunc },
 111     /* 11 */ { "execve" },
 112     /* 12 */ { "chdir" },
 113     /* 13 */ { "time", timeFunc<PowerLinux> },
 114     /* 14 */ { "mknod" },
 115     /* 15 */ { "chmod", chmodFunc<PowerLinux> },
 116     /* 16 */ { "lchown", chownFunc },
 117     /* 17 */ { "break", brkFunc }, //???
 118     /* 18 */ { "unused#18" }, //???
 119     /* 19 */ { "lseek", lseekFunc },
 120     /* 20 */ { "getpid", getpidFunc },
 121     /* 21 */ { "mount" },
 122     /* 22 */ { "umount" },
 123     /* 23 */ { "setuid", ignoreFunc },
 124     /* 24 */ { "getuid", getuidFunc },
 125     /* 25 */ { "stime" },
 126     /* 26 */ { "ptrace" },
 127     /* 27 */ { "alarm" },
 128     /* 28 */ { "unused#28" },
 129     /* 29 */ { "pause" },
 130     /* 30 */ { "utime" },
 131     /* 31 */ { "stty" },
 132     /* 32 */ { "gtty" },
 133     /* 33 */ { "access" },
 134     /* 34 */ { "nice" },
 135     /* 35 */ { "ftime" },
 136     /* 36 */ { "sync" },
 137     /* 37 */ { "kill", ignoreFunc },
 138     /* 38 */ { "rename", renameFunc },
 139     /* 39 */ { "mkdir" },
 140     /* 40 */ { "rmdir" },
 141     /* 41 */ { "dup", dupFunc },
 142     /* 42 */ { "pipe" },
 143     /* 43 */ { "times", timesFunc<PowerLinux> },
 144     /* 44 */ { "prof" },
 145     /* 45 */ { "brk", brkFunc },
 146     /* 46 */ { "setgid" },
 147     /* 47 */ { "getgid", getgidFunc },
 148     /* 48 */ { "signal", ignoreFunc },
 149     /* 49 */ { "geteuid", geteuidFunc },
 150     /* 50 */ { "getegid", getegidFunc },
 151     /* 51 */ { "acct" },
 152     /* 52 */ { "umount2" },
 153     /* 53 */ { "lock" },
 154     /* 54 */ { "ioctl", ioctlFunc<PowerLinux> },
 155     /* 55 */ { "fcntl", fcntlFunc },
 156     /* 56 */ { "mpx" },
 157     /* 57 */ { "setpgid" },
 158     /* 58 */ { "ulimit" },
 159     /* 59 */ { "unused#59" },
 160     /* 60 */ { "umask", umaskFunc },
 161     /* 61 */ { "chroot" },
 162     /* 62 */ { "ustat" },
 163     /* 63 */ { "dup2" },
 164     /* 64 */ { "getppid", getpagesizeFunc },
 165     /* 65 */ { "getpgrp" },
 166     /* 66 */ { "setsid" },
 167     /* 67 */ { "sigaction" },
 168     /* 68 */ { "sgetmask" },
 169     /* 69 */ { "ssetmask" },
 170     /* 70 */ { "setreuid" },
 171     /* 71 */ { "setregid" },
 172     /* 72 */ { "sigsuspend" },
 173     /* 73 */ { "sigpending" },
 174     /* 74 */ { "sethostname", ignoreFunc },
 175     /* 75 */ { "setrlimit", ignoreFunc },
 176     /* 76 */ { "getrlimit" },
 177     /* 77 */ { "getrusage", ignoreFunc },
 178     /* 78 */ { "gettimeofday" },
 179     /* 79 */ { "settimeofday" },
 180     /* 80 */ { "getgroups" },
 181     /* 81 */ { "setgroups" },
 182     /* 82 */ { "reserved#82" },
 183     /* 83 */ { "symlink" },
 184     /* 84 */ { "unused#84" },
 185     /* 85 */ { "readlink" },
 186     /* 86 */ { "uselib" },
 187     /* 87 */ { "swapon", gethostnameFunc },
 188     /* 88 */ { "reboot" },
 189     /* 89 */ { "readdir" },
 190     /* 90 */ { "mmap", mmapFunc<PowerLinux> },
 191     /* 91 */ { "munmap",munmapFunc },
 192     /* 92 */ { "truncate", truncateFunc },
 193     /* 93 */ { "ftruncate", ftruncateFunc },
 194     /* 94 */ { "fchmod" },
 195     /* 95 */ { "fchown" },
 196     /* 96 */ { "getpriority" },
 197     /* 97 */ { "setpriority" },
 198     /* 98 */ { "profil" },
 199     /* 99 */ { "statfs" },
 200     /* 100 */ { "fstatfs" },
 201     /* 101 */ { "ioperm" },
 202     /* 102 */ { "socketcall" },
 203     /* 103 */ { "syslog" },
 204     /* 104 */ { "setitimer" },
 205     /* 105 */ { "getitimer" },
 206     /* 106 */ { "stat",  statFunc<PowerLinux> },
 207     /* 107 */ { "lstat" },
 208     /* 108 */ { "fstat", fstatFunc<PowerLinux> },
 209     /* 109 */ { "unused#109" },
 210     /* 110 */ { "iopl" },
 211     /* 111 */ { "vhangup" },
 212     /* 112 */ { "idle", ignoreFunc },
 213     /* 113 */ { "vm86" },
 214     /* 114 */ { "wait4" },
 215     /* 115 */ { "swapoff" },
 216     /* 116 */ { "sysinfo" },
 217     /* 117 */ { "ipc" },
 218     /* 118 */ { "fsync" },
 219     /* 119 */ { "sigreturn" },
 220     /* 120 */ { "clone" },
 221     /* 121 */ { "setdomainname" },
 222     /* 122 */ { "uname", unameFunc },
 223     /* 123 */ { "modify_ldt" },
 224     /* 124 */ { "adjtimex" },
 225     /* 125 */ { "mprotect", ignoreFunc },
 226     /* 126 */ { "sigprocmask" },
 227     /* 127 */ { "create_module" },
 228     /* 128 */ { "init_module" },
 229     /* 129 */ { "delete_module" },
 230     /* 130 */ { "get_kernel_syms" },
 231     /* 131 */ { "quotactl" },
 232     /* 132 */ { "getpgid" },
 233     /* 133 */ { "fchdir" },
 234     /* 134 */ { "bdflush" },
 235     /* 135 */ { "sysfs" },
 236     /* 136 */ { "personality" },
 237     /* 137 */ { "afs_syscall" },
 238     /* 138 */ { "setfsuid" },
 239     /* 139 */ { "setfsgid" },
 240     /* 140 */ { "llseek", _llseekFunc },
 241     /* 141 */ { "getdents" },
 242     /* 142 */ { "newselect" },
 243     /* 143 */ { "flock" },
 244     /* 144 */ { "msync" },
 245     /* 145 */ { "readv" },
 246     /* 146 */ { "writev", writevFunc<PowerLinux> },
 247     /* 147 */ { "getsid" },
 248     /* 148 */ { "fdatasync" },
 249     /* 149 */ { "sysctl" },
 250     /* 150 */ { "mlock" },
 251     /* 151 */ { "munlock" },
 252     /* 152 */ { "mlockall" },
 253     /* 153 */ { "munlockall" },
 254     /* 154 */ { "sched_setparam" },
 255     /* 155 */ { "sched_getparam" },
 256     /* 156 */ { "sched_setscheduler" },
 257     /* 157 */ { "sched_getscheduler" },
 258     /* 158 */ { "sched_yield" },
 259     /* 159 */ { "sched_get_priority_max" },
 260     /* 160 */ { "sched_get_priority_min" },
 261     /* 161 */ { "sched_rr_get_interval" },
 262     /* 162 */ { "nanosleep" },
 263     /* 163 */ { "mremap" },
 264     /* 164 */ { "setresuid" },
 265     /* 165 */ { "getresuid" },
 266     /* 166 */ { "vm862" },
 267     /* 167 */ { "query_module" },
 268     /* 168 */ { "poll" },
 269     /* 169 */ { "nfsservctl" },
 270     /* 170 */ { "setresgid" },
 271     /* 171 */ { "getresgid" },
 272     /* 172 */ { "prctl" },
 273     /* 173 */ { "rt_sigaction", ignoreFunc },
 274     /* 174 */ { "rt_sigprocmask" },
 275     /* 175 */ { "unknown#175" },
 276     /* 176 */ { "rt_sigpending" },
 277     /* 177 */ { "rt_sigtimedwait" },
 278     /* 178 */ { "rt_sigqueueinfo", ignoreFunc },
 279     /* 179 */ { "rt_sigsuspend" },
 280     /* 180 */ { "pread64" },
 281     /* 181 */ { "pwrite64" },
 282     /* 182 */ { "chown" },
 283     /* 183 */ { "getcwd" },
 284     /* 184 */ { "capget" },
 285     /* 185 */ { "capset" },
 286     /* 186 */ { "sigaltstack" },
 287     /* 187 */ { "sendfile" },
 288     /* 188 */ { "getpmsg" },
 289     /* 189 */ { "putpmsg" },
 290     /* 190 */ { "ugetrlimit", ignoreFunc },
 291     /* 191 */ { "getrlimit" },
 292     /* 192 */ { "mmap2", mmapFunc<PowerLinux> },
 293     /* 193 */ { "truncate64" },
 294     /* 194 */ { "ftruncate64", ftruncate64Func },
 295     /* 195 */ { "stat64", stat64Func<PowerLinux> },
 296     /* 196 */ { "lstat64", lstat64Func<PowerLinux> },
 297     /* 197 */ { "fstat64", fstat64Func<PowerLinux> },
 298     /* 198 */ { "lchown" },
 299     /* 199 */ { "getuid", getuidFunc },
 300     /* 200 */ { "getgid", getgidFunc },
 301     /* 201 */ { "geteuid", geteuidFunc },
 302     /* 202 */ { "getegid", getegidFunc },
 303     /* 203 */ { "setreuid" },
 304     /* 204 */ { "fcntl64", fcntl64Func },
 305     /* 205 */ { "getgroups" },
 306     /* 206 */ { "setgroups" },
 307     /* 207 */ { "fchown" },
 308     /* 208 */ { "setresuid" },
 309     /* 209 */ { "getresuid" },
 310     /* 210 */ { "setresgid" },
 311     /* 211 */ { "getresgid" },
 312     /* 212 */ { "chown" },
 313     /* 213 */ { "setuid" },
 314     /* 214 */ { "setgid" },
 315     /* 215 */ { "setfsuid" },
 316     /* 216 */ { "setfsgid" },
 317     /* 217 */ { "getdents64" },
 318     /* 218 */ { "pivot_root" },
 319     /* 219 */ { "mincore" },
 320     /* 220 */ { "madvise" },
 321     /* 221 */ { "unknown#221" },
 322     /* 222 */ { "tux" },
 323     /* 223 */ { "unknown#223" },
 324     /* 224 */ { "gettid" },
 325     /* 225 */ { "readahead" },
 326     /* 226 */ { "setxattr" },
 327     /* 227 */ { "lsetxattr" },
 328     /* 228 */ { "fsetxattr" },
 329     /* 229 */ { "getxattr" },
 330     /* 230 */ { "lgetxattr" },
 331     /* 231 */ { "fgetxattr" },
 332     /* 232 */ { "listxattr" },
 333     /* 233 */ { "llistxattr" },
 334     /* 234 */ { "exit_group", exitGroupFunc },
 335     /* 235 */ { "removexattr" },
 336     /* 236 */ { "lremovexattr" },
 337     /* 237 */ { "fremovexattr" },
 338     /* 238 */ { "tkill" },
 339     /* 239 */ { "sendfile64" },
 340     /* 240 */ { "futex" },
 341     /* 241 */ { "sched_setaffinity" },
 342     /* 242 */ { "sched_getaffinity" },
 343     /* 243 */ { "io_setup" },
 344     /* 244 */ { "io_destory" },
 345     /* 245 */ { "io_getevents" },
 346     /* 246 */ { "io_submit" },
 347     /* 247 */ { "io_cancel" },
 348     /* 248 */ { "unknown#248" },
 349     /* 249 */ { "lookup_dcookie" },
 350     /* 250 */ { "epoll_create" },
 351     /* 251 */ { "epoll_ctl" },
 352     /* 252 */ { "epoll_wait" },
 353     /* 253 */ { "remap_file_pages" },
 354     /* 254 */ { "set_thread_area" },
 355     /* 255 */ { "get_thread_area" },
 356     /* 256 */ { "set_tid_address" },
 357     /* 257 */ { "timer_create" },
 358     /* 258 */ { "timer_settime" },
 359     /* 259 */ { "timer_gettime" },
 360     /* 260 */ { "timer_getoverrun" },
 361     /* 261 */ { "timer_delete" },
 362     /* 262 */ { "clock_settime" },
 363     /* 263 */ { "clock_gettime" },
 364     /* 264 */ { "clock_getres" },
 365     /* 265 */ { "clock_nanosleep" },
 366     /* 266 */ { "statfs64" },
 367     /* 267 */ { "fstatfs64" },
 368     /* 268 */ { "tgkill" },
 369     /* 269 */ { "utimes" },
 370     /* 270 */ { "arm_fadvise64_64" },
 371     /* 271 */ { "pciconfig_iobase" },
 372     /* 272 */ { "pciconfig_read" },
 373     /* 273 */ { "pciconfig_write" },
 374     /* 274 */ { "mq_open" },
 375     /* 275 */ { "mq_unlink" },
 376     /* 276 */ { "mq_timedsend" },
 377     /* 277 */ { "mq_timedreceive" },
 378     /* 278 */ { "mq_notify" },
 379     /* 279 */ { "mq_getsetattr" },
 380     /* 280 */ { "waitid" },
 381     /* 281 */ { "socket" },
 382     /* 282 */ { "bind" },
 383     /* 283 */ { "connect" },
 384     /* 284 */ { "listen" },
 385     /* 285 */ { "accept" },
 386     /* 286 */ { "getsockname" },
 387     /* 287 */ { "getpeername" },
 388     /* 288 */ { "socketpair" },
 389     /* 289 */ { "send" },
 390     /* 290 */ { "sendto" },
 391     /* 291 */ { "recv" },
 392     /* 292 */ { "recvfrom" },
 393     /* 293 */ { "shutdown" },
 394     /* 294 */ { "setsockopt" },
 395     /* 295 */ { "getsockopt" },
 396     /* 296 */ { "sendmsg" },
 397     /* 297 */ { "rcvmsg" },
 398     /* 298 */ { "semop" },
 399     /* 299 */ { "semget" },
 400     /* 300 */ { "semctl" },
 401     /* 301 */ { "msgsend" },
 402     /* 302 */ { "msgrcv" },
 403     /* 303 */ { "msgget" },
 404     /* 304 */ { "msgctl" },
 405     /* 305 */ { "shmat" },
 406     /* 306 */ { "shmdt" },
 407     /* 307 */ { "shmget" },
 408     /* 308 */ { "shmctl" },
 409     /* 309 */ { "add_key" },
 410     /* 310 */ { "request_key" },
 411     /* 311 */ { "keyctl" },
 412     /* 312 */ { "semtimedop" },
 413     /* 313 */ { "vserver" },
 414     /* 314 */ { "ioprio_set" },
 415     /* 315 */ { "ioprio_get" },
 416     /* 316 */ { "inotify_init" },
 417     /* 317 */ { "inotify_add_watch" },
 418     /* 318 */ { "inotify_rm_watch" },
 419     /* 319 */ { "mbind" },
 420     /* 320 */ { "get_mempolicy" },
 421     /* 321 */ { "set_mempolicy" },
 422     /* 322 */ { "openat" },
 423     /* 323 */ { "mkdirat" },
 424     /* 324 */ { "mknodat" },
 425     /* 325 */ { "fchownat" },
 426     /* 326 */ { "futimesat" },
 427     /* 327 */ { "fstatat64" },
 428     /* 328 */ { "unlinkat" },
 429     /* 329 */ { "renameat" },
 430     /* 330 */ { "linkat" },
 431     /* 331 */ { "symlinkat" },
 432     /* 332 */ { "readlinkat" },
 433     /* 333 */ { "fchmodat" },
 434     /* 334 */ { "faccessat" },
 435     /* 335 */ { "pselect6" },
 436     /* 336 */ { "ppoll" },
 437     /* 337 */ { "unshare" },
 438     /* 338 */ { "set_robust_list" },
 439     /* 339 */ { "get_robust_list" },
 440     /* 340 */ { "splice" },
 441     /* 341 */ { "arm_sync_file_range" },
 442     /* 342 */ { "tee" },
 443     /* 343 */ { "vmsplice" },
 444     /* 344 */ { "move_pages" },
 445     /* 345 */ { "getcpu" },
 446     /* 346 */ { "epoll_pwait" },
 447 };
 448
 449 PowerLinuxProcess::PowerLinuxProcess(ProcessParams * params,
 450         ObjectFile *objFile)
 451     : PowerProcess(params, objFile),
 452       Num_Syscall_Descs(sizeof(syscallDescs) / sizeof(SyscallDesc))
 453 {
 454 }
 455
 456 SyscallDesc*
 457 PowerLinuxProcess::getDesc(int callnum)
 458 {
 459     if (callnum < 0 || callnum > Num_Syscall_Descs)
 460         return NULL;
 461
 462     return &syscallDescs[callnum];
 463 }
 464
 465 void
 466 PowerLinuxProcess::initState()
 467 {
 468     PowerProcess::initState();
 469 }
 470
 471 void
 472 PowerLinuxProcess::syscall(ThreadContext *tc, Fault *fault)
 473 {
 474     doSyscall(tc->readIntReg(0), tc, fault);
 475 }
 476
 477 RegVal
 478 PowerLinuxProcess::getSyscallArg(ThreadContext *tc, int &i)
 479 {
 480     // Linux apparently allows more parameter than the ABI says it should.
 481     // This limit may need to be increased even further.
 482     assert(i < 6);
 483     return tc->readIntReg(ArgumentReg0 + i++);
 484 }