/* * Copyright (c) 2004-2005 The Regents of The University of Michigan * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer; * redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution; * neither the name of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef __LINUX_HH__ #define __LINUX_HH__ #include "config/full_system.hh" #if FULL_SYSTEM class Linux {}; #else //!FULL_SYSTEM #include #include #include // for host open() flags #include // for memset() #include #include #include #include "sim/syscall_emul.hh" class TranslatingPort; /// /// This class encapsulates the types, structures, constants, /// functions, and syscall-number mappings specific to the Alpha Linux /// syscall interface. /// class Linux { public: //@{ /// Basic Linux types. typedef uint64_t size_t; typedef uint64_t off_t; typedef int64_t time_t; typedef uint32_t uid_t; typedef uint32_t gid_t; //@} #if BSD_HOST typedef struct stat hst_stat; typedef struct stat hst_stat64; #else typedef struct stat hst_stat ; typedef struct stat64 hst_stat64; #endif //@{ /// open(2) flag values. static const int TGT_O_RDONLY = 00000000; //!< O_RDONLY static const int TGT_O_WRONLY = 00000001; //!< O_WRONLY static const int TGT_O_RDWR = 00000002; //!< O_RDWR static const int TGT_O_NONBLOCK = 00000004; //!< O_NONBLOCK static const int TGT_O_APPEND = 00000010; //!< O_APPEND static const int TGT_O_CREAT = 00001000; //!< O_CREAT static const int TGT_O_TRUNC = 00002000; //!< O_TRUNC static const int TGT_O_EXCL = 00004000; //!< O_EXCL static const int TGT_O_NOCTTY = 00010000; //!< O_NOCTTY static const int TGT_O_SYNC = 00040000; //!< O_SYNC static const int TGT_O_DRD = 00100000; //!< O_DRD static const int TGT_O_DIRECTIO = 00200000; //!< O_DIRECTIO static const int TGT_O_CACHE = 00400000; //!< O_CACHE static const int TGT_O_DSYNC = 02000000; //!< O_DSYNC static const int TGT_O_RSYNC = 04000000; //!< O_RSYNC //@} /// This table maps the target open() flags to the corresponding /// host open() flags. static OpenFlagTransTable openFlagTable[]; /// Number of entries in openFlagTable[]. static const int NUM_OPEN_FLAGS; /// Stat buffer. Note that we can't call it 'stat' since that /// gets #defined to something else on some systems. struct tgt_stat { uint32_t st_dev; //!< device uint32_t st_ino; //!< inode uint32_t st_mode; //!< mode uint32_t st_nlink; //!< link count uint32_t st_uid; //!< owner's user ID uint32_t st_gid; //!< owner's group ID uint32_t st_rdev; //!< device number int32_t _pad1; //!< for alignment int64_t st_size; //!< file size in bytes uint64_t st_atimeX; //!< time of last access uint64_t st_mtimeX; //!< time of last modification uint64_t st_ctimeX; //!< time of last status change uint32_t st_blksize; //!< optimal I/O block size int32_t st_blocks; //!< number of blocks allocated uint32_t st_flags; //!< flags uint32_t st_gen; //!< unknown }; // same for stat64 struct tgt_stat64 { uint64_t st_dev; uint64_t st_ino; uint64_t st_rdev; int64_t st_size; uint64_t st_blocks; uint32_t st_mode; uint32_t st_uid; uint32_t st_gid; uint32_t st_blksize; uint32_t st_nlink; uint32_t __pad0; uint64_t tgt_st_atime; uint64_t st_atime_nsec; uint64_t tgt_st_mtime; uint64_t st_mtime_nsec; uint64_t tgt_st_ctime; uint64_t st_ctime_nsec; int64_t ___unused[3]; }; /// Length of strings in struct utsname (plus 1 for null char). static const int _SYS_NMLN = 65; /// Interface struct for uname(). struct utsname { char sysname[_SYS_NMLN]; //!< System name. char nodename[_SYS_NMLN]; //!< Node name. char release[_SYS_NMLN]; //!< OS release. char version[_SYS_NMLN]; //!< OS version. char machine[_SYS_NMLN]; //!< Machine type. }; //@{ /// ioctl() command codes. static const unsigned TIOCGETP = 0x40067408; static const unsigned TIOCSETP = 0x80067409; static const unsigned TIOCSETN = 0x8006740a; static const unsigned TIOCSETC = 0x80067411; static const unsigned TIOCGETC = 0x40067412; static const unsigned FIONREAD = 0x4004667f; static const unsigned TIOCISATTY = 0x2000745e; static const unsigned TIOCGETS = 0x402c7413; static const unsigned TIOCGETA = 0x40127417; //@} /// Resource enumeration for getrlimit(). enum rlimit_resources { TGT_RLIMIT_CPU = 0, TGT_RLIMIT_FSIZE = 1, TGT_RLIMIT_DATA = 2, TGT_RLIMIT_STACK = 3, TGT_RLIMIT_CORE = 4, TGT_RLIMIT_RSS = 5, TGT_RLIMIT_NOFILE = 6, TGT_RLIMIT_AS = 7, TGT_RLIMIT_VMEM = 7, TGT_RLIMIT_NPROC = 8, TGT_RLIMIT_MEMLOCK = 9, TGT_RLIMIT_LOCKS = 10 }; /// Limit struct for getrlimit/setrlimit. struct rlimit { uint64_t rlim_cur; //!< soft limit uint64_t rlim_max; //!< hard limit }; /// For mmap(). static const unsigned TGT_MAP_ANONYMOUS = 0x10; /// For gettimeofday(). struct timeval { int64_t tv_sec; //!< seconds int64_t tv_usec; //!< microseconds }; // For writev/readv struct tgt_iovec { uint64_t iov_base; // void * uint64_t iov_len; }; //@{ /// For getrusage(). static const int TGT_RUSAGE_SELF = 0; static const int TGT_RUSAGE_CHILDREN = -1; static const int TGT_RUSAGE_BOTH = -2; //@} /// For getrusage(). struct rusage { struct timeval ru_utime; //!< user time used struct timeval ru_stime; //!< system time used int64_t ru_maxrss; //!< max rss int64_t ru_ixrss; //!< integral shared memory size int64_t ru_idrss; //!< integral unshared data " int64_t ru_isrss; //!< integral unshared stack " int64_t ru_minflt; //!< page reclaims - total vmfaults int64_t ru_majflt; //!< page faults int64_t ru_nswap; //!< swaps int64_t ru_inblock; //!< block input operations int64_t ru_oublock; //!< block output operations int64_t ru_msgsnd; //!< messages sent int64_t ru_msgrcv; //!< messages received int64_t ru_nsignals; //!< signals received int64_t ru_nvcsw; //!< voluntary context switches int64_t ru_nivcsw; //!< involuntary " }; /// Helper function to convert a host stat buffer to a target stat /// buffer. Also copies the target buffer out to the simulated /// memory space. Used by stat(), fstat(), and lstat(). #if !BSD_HOST static void copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat *host) { using namespace TheISA; TypedBufferArg tgt(addr); tgt->st_dev = htog(host->st_dev); tgt->st_ino = htog(host->st_ino); tgt->st_mode = htog(host->st_mode); tgt->st_nlink = htog(host->st_nlink); tgt->st_uid = htog(host->st_uid); tgt->st_gid = htog(host->st_gid); tgt->st_rdev = htog(host->st_rdev); tgt->st_size = htog(host->st_size); tgt->st_atimeX = htog(host->st_atime); tgt->st_mtimeX = htog(host->st_mtime); tgt->st_ctimeX = htog(host->st_ctime); tgt->st_blksize = htog(host->st_blksize); tgt->st_blocks = htog(host->st_blocks); tgt.copyOut(mem); } #else // Third version for bsd systems which no longer have any support for // the old stat() call and stat() is actually a stat64() static void copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat64 *host) { using namespace TheISA; TypedBufferArg tgt(addr); tgt->st_dev = htog(host->st_dev); tgt->st_ino = htog(host->st_ino); tgt->st_mode = htog(host->st_mode); tgt->st_nlink = htog(host->st_nlink); tgt->st_uid = htog(host->st_uid); tgt->st_gid = htog(host->st_gid); tgt->st_rdev = htog(host->st_rdev); tgt->st_size = htog(host->st_size); tgt->st_atimeX = htog(host->st_atime); tgt->st_mtimeX = htog(host->st_mtime); tgt->st_ctimeX = htog(host->st_ctime); tgt->st_blksize = htog(host->st_blksize); tgt->st_blocks = htog(host->st_blocks); tgt.copyOut(mem); } #endif // Same for stat64 static void copyOutStat64Buf(TranslatingPort *mem, int fd, Addr addr, hst_stat64 *host) { using namespace TheISA; TypedBufferArg tgt(addr); // fd == 1 checks are because libc does some checks // that the stdout is interactive vs. a file // this makes it work on non-linux systems if (fd == 1) tgt->st_dev = htog((uint64_t)0xA); else tgt->st_dev = htog((uint64_t)host->st_dev); // XXX What about STAT64_HAS_BROKEN_ST_INO ??? tgt->st_ino = htog((uint64_t)host->st_ino); if (fd == 1) tgt->st_rdev = htog((uint64_t)0x880d); else tgt->st_rdev = htog((uint64_t)host->st_rdev); tgt->st_size = htog((int64_t)host->st_size); tgt->st_blocks = htog((uint64_t)host->st_blocks); if (fd == 1) tgt->st_mode = htog((uint32_t)0x2190); else tgt->st_mode = htog((uint32_t)host->st_mode); tgt->st_uid = htog((uint32_t)host->st_uid); tgt->st_gid = htog((uint32_t)host->st_gid); tgt->st_blksize = htog((uint32_t)host->st_blksize); tgt->st_nlink = htog((uint32_t)host->st_nlink); tgt->tgt_st_atime = htog((uint64_t)host->st_atime); tgt->tgt_st_mtime = htog((uint64_t)host->st_mtime); tgt->tgt_st_ctime = htog((uint64_t)host->st_ctime); #if defined(STAT_HAVE_NSEC) tgt->st_atime_nsec = htog(host->st_atime_nsec); tgt->st_mtime_nsec = htog(host->st_mtime_nsec); tgt->st_ctime_nsec = htog(host->st_ctime_nsec); #else tgt->st_atime_nsec = 0; tgt->st_mtime_nsec = 0; tgt->st_ctime_nsec = 0; #endif tgt.copyOut(mem); } }; // class Linux #endif // FULL_SYSTEM #endif // __LINUX_HH__