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