Formatting & doxygen docs for new syscall emulation code.
arch/alpha/alpha_linux_process.cc: arch/alpha/alpha_linux_process.hh: arch/alpha/alpha_tru64_process.cc: arch/alpha/alpha_tru64_process.hh: sim/syscall_emul.cc: sim/syscall_emul.hh: Formatting & doxygen. --HG-- extra : convert_revision : 4f07dd37e254120800dd0d5c0eb47acc9c00cb3f
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6 changed files with 1447 additions and 1435 deletions
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@ -52,82 +52,86 @@
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using namespace std;
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using namespace std;
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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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class Linux {
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public:
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public:
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//
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//@{
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// basic Linux types
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/// Basic Linux types.
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//
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typedef uint64_t size_t;
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typedef uint64_t size_t;
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typedef uint64_t off_t;
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typedef uint64_t off_t;
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typedef int64_t time_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 uid_t;
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typedef uint32_t gid_t;
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typedef uint32_t gid_t;
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//@}
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// open(2) flags
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//@{
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static const int TGT_O_RDONLY = 00000000;
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/// open(2) flag values.
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static const int TGT_O_WRONLY = 00000001;
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static const int TGT_O_RDONLY = 00000000; //!< O_RDONLY
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static const int TGT_O_RDWR = 00000002;
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static const int TGT_O_WRONLY = 00000001; //!< O_WRONLY
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static const int TGT_O_NONBLOCK = 00000004;
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static const int TGT_O_RDWR = 00000002; //!< O_RDWR
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static const int TGT_O_APPEND = 00000010;
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static const int TGT_O_NONBLOCK = 00000004; //!< O_NONBLOCK
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static const int TGT_O_CREAT = 00001000;
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static const int TGT_O_APPEND = 00000010; //!< O_APPEND
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static const int TGT_O_TRUNC = 00002000;
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static const int TGT_O_CREAT = 00001000; //!< O_CREAT
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static const int TGT_O_EXCL = 00004000;
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static const int TGT_O_TRUNC = 00002000; //!< O_TRUNC
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static const int TGT_O_NOCTTY = 00010000;
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static const int TGT_O_EXCL = 00004000; //!< O_EXCL
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static const int TGT_O_SYNC = 00040000;
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static const int TGT_O_NOCTTY = 00010000; //!< O_NOCTTY
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static const int TGT_O_DRD = 00100000;
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static const int TGT_O_SYNC = 00040000; //!< O_SYNC
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static const int TGT_O_DIRECTIO = 00200000;
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static const int TGT_O_DRD = 00100000; //!< O_DRD
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static const int TGT_O_CACHE = 00400000;
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static const int TGT_O_DIRECTIO = 00200000; //!< O_DIRECTIO
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static const int TGT_O_DSYNC = 02000000;
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static const int TGT_O_CACHE = 00400000; //!< O_CACHE
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static const int TGT_O_RSYNC = 04000000;
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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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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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static const int NUM_OPEN_FLAGS;
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//
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/// Stat buffer. Note that we can't call it 'stat' since that
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// Stat buffer.
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/// gets #defined to something else on some systems.
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//
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struct tgt_stat {
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struct tgt_stat {
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uint32_t st_dev;
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uint32_t st_dev; //!< device
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uint32_t st_ino;
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uint32_t st_ino; //!< inode
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uint32_t st_mode;
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uint32_t st_mode; //!< mode
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uint32_t st_nlink;
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uint32_t st_nlink; //!< link count
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uint32_t st_uid;
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uint32_t st_uid; //!< owner's user ID
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uint32_t st_gid;
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uint32_t st_gid; //!< owner's group ID
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uint32_t st_rdev;
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uint32_t st_rdev; //!< device number
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int64_t st_size;
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int64_t st_size; //!< file size in bytes
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uint64_t st_atimeX;
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uint64_t st_atimeX; //!< time of last access
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uint64_t st_mtimeX;
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uint64_t st_mtimeX; //!< time of last modification
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uint64_t st_ctimeX;
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uint64_t st_ctimeX; //!< time of last status change
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uint32_t st_blksize;
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uint32_t st_blksize; //!< optimal I/O block size
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int32_t st_blocks;
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int32_t st_blocks; //!< number of blocks allocated
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uint32_t st_flags;
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uint32_t st_flags; //!< flags
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uint32_t st_gen;
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uint32_t st_gen; //!< unknown
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};
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};
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//
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/// Length of strings in struct utsname (plus 1 for null char).
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// for uname()
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//
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static const int _SYS_NMLN = 65;
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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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struct utsname {
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char sysname[_SYS_NMLN];
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char sysname[_SYS_NMLN]; //!< System name.
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char nodename[_SYS_NMLN];
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char nodename[_SYS_NMLN]; //!< Node name.
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char release[_SYS_NMLN];
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char release[_SYS_NMLN]; //!< OS release.
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char version[_SYS_NMLN];
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char version[_SYS_NMLN]; //!< OS version.
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char machine[_SYS_NMLN];
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char machine[_SYS_NMLN]; //!< Machine type.
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};
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};
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//
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//@{
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// for ioctl()
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/// ioctl() command codes.
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//
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static const unsigned TIOCGETP = 0x40067408;
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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 TIOCSETP = 0x80067409;
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static const unsigned TIOCSETN = 0x8006740a;
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static const unsigned TIOCSETN = 0x8006740a;
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@ -135,11 +139,9 @@ static const unsigned TIOCSETC = 0x80067411;
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static const unsigned TIOCGETC = 0x40067412;
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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 FIONREAD = 0x4004667f;
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static const unsigned TIOCISATTY = 0x2000745e;
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static const unsigned TIOCISATTY = 0x2000745e;
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//@}
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//
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/// Resource enumeration for getrlimit().
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// for getrlimit()
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//
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enum rlimit_resources {
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enum rlimit_resources {
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RLIMIT_CPU = 0,
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RLIMIT_CPU = 0,
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RLIMIT_FSIZE = 1,
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RLIMIT_FSIZE = 1,
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@ -155,56 +157,53 @@ enum rlimit_resources {
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RLIMIT_LOCKS = 10
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RLIMIT_LOCKS = 10
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};
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};
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/// Limit struct for getrlimit/setrlimit.
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struct rlimit {
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struct rlimit {
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uint64_t rlim_cur; // soft limit
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uint64_t rlim_cur; //!< soft limit
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uint64_t rlim_max; // hard limit
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uint64_t rlim_max; //!< hard limit
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};
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};
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//
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/// For mmap().
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// for mmap()
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//
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static const unsigned TGT_MAP_ANONYMOUS = 0x10;
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static const unsigned TGT_MAP_ANONYMOUS = 0x10;
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//
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/// For gettimeofday().
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// for gettimeofday
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//
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struct timeval {
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struct timeval {
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int64_t tv_sec;
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int64_t tv_sec; //!< seconds
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int64_t tv_usec;
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int64_t tv_usec; //!< microseconds
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};
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};
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//
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//@{
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// for getrusage
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/// For getrusage().
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//
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static const int RUSAGE_SELF = 0;
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static const int RUSAGE_SELF = 0;
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static const int RUSAGE_CHILDREN = -1;
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static const int RUSAGE_CHILDREN = -1;
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static const int RUSAGE_BOTH = -2;
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static const int RUSAGE_BOTH = -2;
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//@}
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/// For getrusage().
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struct rusage {
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struct rusage {
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struct timeval ru_utime; // user time used
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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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struct timeval ru_stime; //!< system time used
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int64_t ru_maxrss;
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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_ixrss; //!< integral shared memory size
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int64_t ru_idrss; // integral unshared data "
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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_isrss; //!< integral unshared stack "
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int64_t ru_minflt; // page reclaims - total vmfaults
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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_majflt; //!< page faults
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int64_t ru_nswap; // swaps
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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_inblock; //!< block input operations
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int64_t ru_oublock; // block output 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_msgsnd; //!< messages sent
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int64_t ru_msgrcv; // messages received
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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_nsignals; //!< signals received
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int64_t ru_nvcsw; // voluntary context switches
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int64_t ru_nvcsw; //!< voluntary context switches
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int64_t ru_nivcsw; // involuntary "
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int64_t ru_nivcsw; //!< involuntary "
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};
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};
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static
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/// Helper function to convert a host stat buffer to a target stat
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void
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/// buffer. Also copies the target buffer out to the simulated
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/// memorty space. Used by stat(), fstat(), and lstat().
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static void
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copyOutStatBuf(FunctionalMemory *mem, Addr addr, struct stat *host)
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copyOutStatBuf(FunctionalMemory *mem, Addr addr, struct stat *host)
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{
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{
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TypedBufferArg<Linux::tgt_stat> tgt(addr);
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TypedBufferArg<Linux::tgt_stat> tgt(addr);
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tgt.copyOut(mem);
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tgt.copyOut(mem);
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}
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}
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/// The target system's hostname.
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static const char *hostname;
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static const char *hostname;
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static
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/// Target uname() handler.
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int
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static int
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unameFunc(SyscallDesc *desc, int callnum, Process *process,
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unameFunc(SyscallDesc *desc, int callnum, Process *process,
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ExecContext *xc)
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ExecContext *xc)
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{
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{
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return 0;
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return 0;
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}
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}
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/// Target osf_getsysyinfo() handler. Even though this call is
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static
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/// borrowed from Tru64, the subcases that get used appear to be
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int
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/// different in practice from those used by Tru64 processes.
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static int
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osf_getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
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osf_getsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
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ExecContext *xc)
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ExecContext *xc)
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{
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{
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return 0;
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return 0;
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}
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}
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/// Target osf_setsysinfo() handler.
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static
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static int
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int
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osf_setsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
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osf_setsysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
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ExecContext *xc)
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ExecContext *xc)
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{
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{
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return 0;
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return 0;
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}
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}
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/// Target fnctl() handler.
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static
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static int
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int
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fcntlFunc(SyscallDesc *desc, int callnum, Process *process,
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fcntlFunc(SyscallDesc *desc, int callnum, Process *process,
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ExecContext *xc)
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ExecContext *xc)
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{
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{
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}
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}
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}
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}
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/// Array of syscall descriptors, indexed by call number.
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static SyscallDesc syscallDescs[];
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static SyscallDesc syscallDescs[];
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/// Number of syscalls in syscallDescs[].
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static const int Num_Syscall_Descs;
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static const int Num_Syscall_Descs;
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/// Max supported syscall number.
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static const int Max_Syscall_Desc;
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static const int Max_Syscall_Desc;
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static
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/// Do the specified syscall. Just looks the call number up in
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void
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/// the table and invokes the appropriate handler.
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static void
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doSyscall(int callnum, Process *process, ExecContext *xc)
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doSyscall(int callnum, Process *process, ExecContext *xc)
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{
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{
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if (callnum < 0 || callnum > Max_Syscall_Desc) {
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if (callnum < 0 || callnum > Max_Syscall_Desc) {
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desc->doSyscall(callnum, process, xc);
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desc->doSyscall(callnum, process, xc);
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}
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}
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}; // class Linux
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}; // class Linux
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// open(2) flags translation table
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// open(2) flags translation table
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OpenFlagTransTable Linux::openFlagTable[] = {
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OpenFlagTransTable Linux::openFlagTable[] = {
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/* target flag */ /* host flag */
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#ifdef _MSC_VER
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#ifdef _MSC_VER
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{ Linux::TGT_O_RDONLY, _O_RDONLY },
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{ Linux::TGT_O_RDONLY, _O_RDONLY },
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{ Linux::TGT_O_WRONLY, _O_WRONLY },
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{ Linux::TGT_O_WRONLY, _O_WRONLY },
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#endif /* _MSC_VER */
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#endif /* _MSC_VER */
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};
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};
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const int Linux::NUM_OPEN_FLAGS = (sizeof(Linux::openFlagTable)/sizeof(Linux::openFlagTable[0]));
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const int Linux::NUM_OPEN_FLAGS =
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(sizeof(Linux::openFlagTable)/sizeof(Linux::openFlagTable[0]));
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const char *Linux::hostname = "m5.eecs.umich.edu";
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const char *Linux::hostname = "m5.eecs.umich.edu";
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#include "sim/process.hh"
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#include "sim/process.hh"
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/// A process with emulated Alpha/Linux syscalls.
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class AlphaLinuxProcess : public LiveProcess
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class AlphaLinuxProcess : public LiveProcess
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{
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{
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public:
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public:
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/// Constructor.
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AlphaLinuxProcess(const std::string &name,
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AlphaLinuxProcess(const std::string &name,
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ObjectFile *objFile,
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ObjectFile *objFile,
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int stdin_fd, int stdout_fd, int stderr_fd,
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int stdin_fd, int stdout_fd, int stderr_fd,
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std::vector<std::string> &argv,
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std::vector<std::string> &argv,
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std::vector<std::string> &envp);
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std::vector<std::string> &envp);
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/// Syscall emulation function.
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virtual void syscall(ExecContext *xc);
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virtual void syscall(ExecContext *xc);
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};
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};
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File diff suppressed because it is too large
Load diff
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@ -31,15 +31,18 @@
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#include "sim/process.hh"
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#include "sim/process.hh"
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/// A process with emulated Alpha Tru64 syscalls.
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class AlphaTru64Process : public LiveProcess
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class AlphaTru64Process : public LiveProcess
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{
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{
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public:
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public:
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/// Constructor.
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AlphaTru64Process(const std::string &name,
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AlphaTru64Process(const std::string &name,
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ObjectFile *objFile,
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ObjectFile *objFile,
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int stdin_fd, int stdout_fd, int stderr_fd,
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int stdin_fd, int stdout_fd, int stderr_fd,
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std::vector<std::string> &argv,
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std::vector<std::string> &argv,
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std::vector<std::string> &envp);
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std::vector<std::string> &envp);
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/// Syscall emulation function.
|
||||||
virtual void syscall(ExecContext *xc);
|
virtual void syscall(ExecContext *xc);
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
|
@ -57,9 +57,6 @@ SyscallDesc::doSyscall(int callnum, Process *process, ExecContext *xc)
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
//
|
|
||||||
// Handler for unimplemented syscalls that we haven't thought about.
|
|
||||||
//
|
|
||||||
int
|
int
|
||||||
unimplementedFunc(SyscallDesc *desc, int callnum, Process *process,
|
unimplementedFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
ExecContext *xc)
|
ExecContext *xc)
|
||||||
|
@ -73,12 +70,6 @@ unimplementedFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
//
|
|
||||||
// Handler for unimplemented syscalls that we never intend to
|
|
||||||
// implement (signal handling, etc.) and should not affect the correct
|
|
||||||
// behavior of the program. Print a warning only if the appropriate
|
|
||||||
// trace flag is enabled. Return success to the target program.
|
|
||||||
//
|
|
||||||
int
|
int
|
||||||
ignoreFunc(SyscallDesc *desc, int callnum, Process *process,
|
ignoreFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
ExecContext *xc)
|
ExecContext *xc)
|
||||||
|
|
|
@ -51,6 +51,7 @@ class SyscallDesc {
|
||||||
|
|
||||||
public:
|
public:
|
||||||
|
|
||||||
|
/// Typedef for target syscall handler functions.
|
||||||
typedef int (*FuncPtr)(SyscallDesc *, int num,
|
typedef int (*FuncPtr)(SyscallDesc *, int num,
|
||||||
Process *, ExecContext *);
|
Process *, ExecContext *);
|
||||||
|
|
||||||
|
@ -58,7 +59,6 @@ class SyscallDesc {
|
||||||
FuncPtr funcPtr; //!< Pointer to emulation function.
|
FuncPtr funcPtr; //!< Pointer to emulation function.
|
||||||
int flags; //!< Flags (see Flags enum).
|
int flags; //!< Flags (see Flags enum).
|
||||||
|
|
||||||
|
|
||||||
/// Flag values for controlling syscall behavior.
|
/// Flag values for controlling syscall behavior.
|
||||||
enum Flags {
|
enum Flags {
|
||||||
/// Don't set return regs according to funcPtr return value.
|
/// Don't set return regs according to funcPtr return value.
|
||||||
|
@ -155,17 +155,40 @@ class TypedBufferArg : public BaseBufferArg
|
||||||
//////////////////////////////////////////////////////////////////////
|
//////////////////////////////////////////////////////////////////////
|
||||||
|
|
||||||
|
|
||||||
|
/// Handler for unimplemented syscalls that we haven't thought about.
|
||||||
int unimplementedFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int unimplementedFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Handler for unimplemented syscalls that we never intend to
|
||||||
|
/// implement (signal handling, etc.) and should not affect the correct
|
||||||
|
/// behavior of the program. Print a warning only if the appropriate
|
||||||
|
/// trace flag is enabled. Return success to the target program.
|
||||||
int ignoreFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int ignoreFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Target exit() handler: terminate simulation.
|
||||||
int exitFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int exitFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Target getpagesize() handler.
|
||||||
int getpagesizeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int getpagesizeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Target obreak() handler: set brk address.
|
||||||
int obreakFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int obreakFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Target close() handler.
|
||||||
int closeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int closeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Target read() handler.
|
||||||
int readFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int readFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Target write() handler.
|
||||||
int writeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int writeFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Target lseek() handler.
|
||||||
int lseekFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int lseekFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Target munmap() handler.
|
||||||
int munmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int munmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
|
/// Target gethostname() handler.
|
||||||
int gethostnameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
int gethostnameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
|
|
||||||
//////////////////////////////////////////////////////////////////////
|
//////////////////////////////////////////////////////////////////////
|
||||||
|
@ -175,6 +198,9 @@ int gethostnameFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc);
|
||||||
//
|
//
|
||||||
//////////////////////////////////////////////////////////////////////
|
//////////////////////////////////////////////////////////////////////
|
||||||
|
|
||||||
|
/// Target ioctl() handler. For the most part, programs call ioctl()
|
||||||
|
/// only to find out if their stdout is a tty, to determine whether to
|
||||||
|
/// do line or block buffering.
|
||||||
template <class OS>
|
template <class OS>
|
||||||
int
|
int
|
||||||
ioctlFunc(SyscallDesc *desc, int callnum, Process *process,
|
ioctlFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
|
@ -204,12 +230,15 @@ ioctlFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/// This struct is used to build an target-OS-dependent table that
|
||||||
|
/// maps the target's open() flags to the host open() flags.
|
||||||
struct OpenFlagTransTable {
|
struct OpenFlagTransTable {
|
||||||
int tgtFlag;
|
int tgtFlag; //!< Target system flag value.
|
||||||
int hostFlag;
|
int hostFlag; //!< Corresponding host system flag value.
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
||||||
|
/// Target open() handler.
|
||||||
template <class OS>
|
template <class OS>
|
||||||
int
|
int
|
||||||
openFunc(SyscallDesc *desc, int callnum, Process *process,
|
openFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
|
@ -254,6 +283,7 @@ openFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/// Target stat() handler.
|
||||||
template <class OS>
|
template <class OS>
|
||||||
int
|
int
|
||||||
statFunc(SyscallDesc *desc, int callnum, Process *process,
|
statFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
|
@ -276,6 +306,7 @@ statFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/// Target lstat() handler.
|
||||||
template <class OS>
|
template <class OS>
|
||||||
int
|
int
|
||||||
lstatFunc(SyscallDesc *desc, int callnum, Process *process,
|
lstatFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
|
@ -297,6 +328,7 @@ lstatFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/// Target fstat() handler.
|
||||||
template <class OS>
|
template <class OS>
|
||||||
int
|
int
|
||||||
fstatFunc(SyscallDesc *desc, int callnum, Process *process,
|
fstatFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
|
@ -321,18 +353,18 @@ fstatFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/// Target mmap() handler.
|
||||||
|
///
|
||||||
|
/// We don't really handle mmap(). If the target is mmaping an
|
||||||
|
/// anonymous region or /dev/zero, we can get away with doing basically
|
||||||
|
/// nothing (since memory is initialized to zero and the simulator
|
||||||
|
/// doesn't really check addresses anyway). Always print a warning,
|
||||||
|
/// since this could be seriously broken if we're not mapping
|
||||||
|
/// /dev/zero.
|
||||||
//
|
//
|
||||||
// We don't really handle mmap(). If the target is mmaping an
|
/// Someday we should explicitly check for /dev/zero in open, flag the
|
||||||
// anonymous region or /dev/zero, we can get away with doing basically
|
/// file descriptor, and fail (or implement!) a non-anonymous mmap to
|
||||||
// nothing (since memory is initialized to zero and the simulator
|
/// anything else.
|
||||||
// doesn't really check addresses anyway). Always print a warning,
|
|
||||||
// since this could be seriously broken if we're not mapping
|
|
||||||
// /dev/zero.
|
|
||||||
//
|
|
||||||
// Someday we should explicitly check for /dev/zero in open, flag the
|
|
||||||
// file descriptor, and fail (or implement!) a non-anonymous mmap to
|
|
||||||
// anything else.
|
|
||||||
//
|
|
||||||
template <class OS>
|
template <class OS>
|
||||||
int
|
int
|
||||||
mmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
|
mmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
|
||||||
|
@ -341,7 +373,7 @@ mmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
|
||||||
uint64_t length = xc->getSyscallArg(1);
|
uint64_t length = xc->getSyscallArg(1);
|
||||||
// int prot = xc->getSyscallArg(2);
|
// int prot = xc->getSyscallArg(2);
|
||||||
int flags = xc->getSyscallArg(3);
|
int flags = xc->getSyscallArg(3);
|
||||||
int fd = p->sim_fd(xc->getSyscallArg(4));
|
// int fd = p->sim_fd(xc->getSyscallArg(4));
|
||||||
// int offset = xc->getSyscallArg(5);
|
// int offset = xc->getSyscallArg(5);
|
||||||
|
|
||||||
if (start == 0) {
|
if (start == 0) {
|
||||||
|
@ -352,13 +384,13 @@ mmapFunc(SyscallDesc *desc, int num, Process *p, ExecContext *xc)
|
||||||
|
|
||||||
if (!(flags & OS::TGT_MAP_ANONYMOUS)) {
|
if (!(flags & OS::TGT_MAP_ANONYMOUS)) {
|
||||||
DPRINTF(SyscallWarnings, "Warning: allowing mmap of file @ fd %d. "
|
DPRINTF(SyscallWarnings, "Warning: allowing mmap of file @ fd %d. "
|
||||||
"This will break if not /dev/zero.", fd);
|
"This will break if not /dev/zero.", xc->getSyscallArg(4));
|
||||||
}
|
}
|
||||||
|
|
||||||
return start;
|
return start;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/// Target getrlimit() handler.
|
||||||
template <class OS>
|
template <class OS>
|
||||||
int
|
int
|
||||||
getrlimitFunc(SyscallDesc *desc, int callnum, Process *process,
|
getrlimitFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
|
@ -383,16 +415,16 @@ getrlimitFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
// 1M usecs in 1 sec, for readability
|
/// A readable name for 1,000,000, for converting microseconds to seconds.
|
||||||
const int one_million = 1000000;
|
const int one_million = 1000000;
|
||||||
|
|
||||||
// seconds since the epoch (1/1/1970)... about a billion, by my reckoning
|
/// Approximate seconds since the epoch (1/1/1970). About a billion,
|
||||||
|
/// by my reckoning. We want to keep this a constant (not use the
|
||||||
|
/// real-world time) to keep simulations repeatable.
|
||||||
const unsigned seconds_since_epoch = 1000000000;
|
const unsigned seconds_since_epoch = 1000000000;
|
||||||
|
|
||||||
//
|
/// Helper function to convert current elapsed time to seconds and
|
||||||
// helper function: populate struct timeval with approximation of
|
/// microseconds.
|
||||||
// current elapsed time
|
|
||||||
//
|
|
||||||
template <class T1, class T2>
|
template <class T1, class T2>
|
||||||
void
|
void
|
||||||
getElapsedTime(T1 &sec, T2 &usec)
|
getElapsedTime(T1 &sec, T2 &usec)
|
||||||
|
@ -405,6 +437,7 @@ getElapsedTime(T1 &sec, T2 &usec)
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/// Target gettimeofday() handler.
|
||||||
template <class OS>
|
template <class OS>
|
||||||
int
|
int
|
||||||
gettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process,
|
gettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
|
@ -421,6 +454,7 @@ gettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/// Target getrusage() function.
|
||||||
template <class OS>
|
template <class OS>
|
||||||
int
|
int
|
||||||
getrusageFunc(SyscallDesc *desc, int callnum, Process *process,
|
getrusageFunc(SyscallDesc *desc, int callnum, Process *process,
|
||||||
|
|
Loading…
Reference in a new issue