| /* |
| * Copyright (c) 2004-2009 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. |
| * |
| * Authors: Ali Saidi |
| */ |
| |
| #ifndef __LINUX_HH__ |
| #define __LINUX_HH__ |
| |
| #include "base/types.hh" |
| |
| #include <string> |
| |
| #include "kern/operatingsystem.hh" |
| #include "sim/process.hh" |
| |
| class ThreadContext; |
| |
| /// |
| /// This class encapsulates the types, structures, constants, |
| /// functions, and syscall-number mappings specific to the Alpha Linux |
| /// syscall interface. |
| /// |
| class Linux : public OperatingSystem |
| { |
| |
| public: |
| |
| //@{ |
| /// Basic Linux types. |
| typedef uint64_t size_t; |
| typedef uint64_t off_t; |
| typedef int64_t time_t; |
| typedef int64_t clock_t; |
| typedef uint32_t uid_t; |
| typedef uint32_t gid_t; |
| //@} |
| |
| /// Stat buffer. Note that we can't call it 'stat' since that |
| /// gets #defined to something else on some systems. This type |
| /// can be specialized by architecture specific "Linux" classes |
| typedef struct { |
| 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 |
| } tgt_stat; |
| |
| // same for stat64 |
| typedef struct { |
| 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 st_atimeX; |
| uint64_t st_atime_nsec; |
| uint64_t st_mtimeX; |
| uint64_t st_mtime_nsec; |
| uint64_t st_ctimeX; |
| uint64_t st_ctime_nsec; |
| int64_t ___unused[3]; |
| } tgt_stat64; |
| |
| /// 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. |
| }; |
| |
| /// Limit struct for getrlimit/setrlimit. |
| struct rlimit { |
| uint64_t rlim_cur; //!< soft limit |
| uint64_t rlim_max; //!< hard limit |
| }; |
| |
| /// For gettimeofday(). |
| struct timeval { |
| int64_t tv_sec; //!< seconds |
| int64_t tv_usec; //!< microseconds |
| }; |
| |
| /// For clock_gettime(). |
| struct timespec { |
| time_t tv_sec; //!< seconds |
| int64_t tv_nsec; //!< nanoseconds |
| }; |
| |
| /// Clock ticks per second, for times(). |
| static const int M5_SC_CLK_TCK = 100; |
| |
| /// For times(). |
| struct tms { |
| int64_t tms_utime; //!< user time |
| int64_t tms_stime; //!< system time |
| int64_t tms_cutime; //!< user time of children |
| int64_t tms_cstime; //!< system time of children |
| }; |
| |
| // For writev/readv |
| struct tgt_iovec { |
| uint64_t iov_base; // void * |
| uint64_t iov_len; |
| }; |
| |
| // For select(). |
| // linux-3.14-src/include/uapi/linux/posix_types.h |
| struct fd_set{ |
| #ifndef LINUX__FD_SETSIZE |
| #define LINUX__FD_SETSIZE 1024 |
| unsigned long fds_bits[LINUX__FD_SETSIZE / (8 * sizeof(long))]; |
| #endif |
| }; |
| |
| //@{ |
| /// ioctl() command codes. |
| static const unsigned TGT_TCGETS = 0x5401; |
| static const unsigned TGT_TCGETA = 0x5405; |
| static const unsigned TGT_TCSETAW = 0x5407; |
| static const unsigned TGT_FIONREAD = 0x541B; |
| //@} |
| |
| /// Return true for the ioctl codes for which we return ENOTTY |
| /// *without* printing a warning, since we know that ENOTTY is the |
| /// correct thing to return (and not just a sign that we don't |
| /// recognize the ioctl code. |
| static bool |
| isTtyReq(unsigned req) |
| { |
| switch (req) { |
| case TGT_FIONREAD: |
| case TGT_TCSETAW: |
| case TGT_TCGETS: |
| case TGT_TCGETA: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| |
| /// Resource constants for getrlimit(). |
| static const unsigned TGT_RLIMIT_CPU = 0; |
| static const unsigned TGT_RLIMIT_FSIZE = 1; |
| static const unsigned TGT_RLIMIT_DATA = 2; |
| static const unsigned TGT_RLIMIT_STACK = 3; |
| static const unsigned TGT_RLIMIT_CORE = 4; |
| static const unsigned TGT_RLIMIT_RSS = 5; |
| static const unsigned TGT_RLIMIT_NPROC = 6; |
| static const unsigned TGT_RLIMIT_NOFILE = 7; |
| static const unsigned TGT_RLIMIT_MEMLOCK = 8; |
| static const unsigned TGT_RLIMIT_AS = 9; |
| static const unsigned TGT_RLIMIT_LOCKS = 10; |
| static const unsigned TGT_RLIMIT_SIGPENDING = 11; |
| static const unsigned TGT_RLIMIT_MSGQUEUE = 12; |
| static const unsigned TGT_RLIMIT_NICE = 13; |
| static const unsigned TGT_RLIMIT_RTPRIO = 14; |
| static const unsigned TGT_RLIMIT_RTTIME = 15; |
| static const unsigned TGT_RLIM_NLIMITS = 16; |
| |
| /// For getrusage(). |
| static const int TGT_RUSAGE_SELF = 0; |
| static const int TGT_RUSAGE_CHILDREN = -1; |
| static const int TGT_RUSAGE_BOTH = -2; |
| |
| 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 " |
| }; |
| |
| static int openSpecialFile(std::string path, Process *process, |
| ThreadContext *tc); |
| static std::string procMeminfo(Process *process, ThreadContext *tc); |
| static std::string etcPasswd(Process *process, ThreadContext *tc); |
| static std::string cpuOnline(Process *process, ThreadContext *tc); |
| |
| // For futex system call |
| static const unsigned TGT_FUTEX_WAIT = 0; |
| static const unsigned TGT_FUTEX_WAKE = 1; |
| static const unsigned TGT_FUTEX_REQUEUE = 3; |
| static const unsigned TGT_FUTEX_CMP_REQUEUE = 4; |
| static const unsigned TGT_FUTEX_WAKE_OP = 5; |
| static const unsigned TGT_FUTEX_WAIT_BITSET = 9; |
| static const unsigned TGT_FUTEX_WAKE_BITSET = 10; |
| static const unsigned TGT_EAGAIN = 11; |
| static const unsigned TGT_EWOULDBLOCK = TGT_EAGAIN; |
| static const unsigned TGT_FUTEX_PRIVATE_FLAG = 128; |
| static const unsigned TGT_FUTEX_CLOCK_REALTIME_FLAG = 256; |
| // op field of futex_wake_op operation |
| static const unsigned TGT_FUTEX_OP_SET = 0; // uaddr2 = oparg; |
| static const unsigned TGT_FUTEX_OP_ADD = 1; // uaddr2 += oparg; |
| static const unsigned TGT_FUTEX_OP_OR = 2; // uaddr2 |= oparg; |
| static const unsigned TGT_FUTEX_OP_ANDN = 3; // uaddr2 &= ~oparg; |
| static const unsigned TGT_FUTEX_OP_XOR = 4; // uaddr2 ^= oparg; |
| // Use (1 << oparg) as operand |
| static const unsigned TGT_FUTEX_OP_ARG_SHIFT = 8; |
| // cmp field of futex_wake_op operation |
| static const unsigned TGT_FUTEX_OP_CMP_EQ = 0; |
| static const unsigned TGT_FUTEX_OP_CMP_NE = 1; |
| static const unsigned TGT_FUTEX_OP_CMP_LT = 2; |
| static const unsigned TGT_FUTEX_OP_CMP_LE = 3; |
| static const unsigned TGT_FUTEX_OP_CMP_GT = 4; |
| static const unsigned TGT_FUTEX_OP_CMP_GE = 5; |
| |
| // for *at syscalls |
| static const int TGT_AT_FDCWD = -100; |
| |
| // for MREMAP |
| static const unsigned TGT_MREMAP_MAYMOVE = 0x1; |
| static const unsigned TGT_MREMAP_FIXED = 0x2; |
| |
| static const unsigned TGT_CLONE_VM = 0x00000100; |
| static const unsigned TGT_CLONE_FS = 0x00000200; |
| static const unsigned TGT_CLONE_FILES = 0x00000400; |
| static const unsigned TGT_CLONE_SIGHAND = 0x00000800; |
| static const unsigned TGT_CLONE_PTRACE = 0x00002000; |
| static const unsigned TGT_CLONE_VFORK = 0x00004000; |
| static const unsigned TGT_CLONE_PARENT = 0x00008000; |
| static const unsigned TGT_CLONE_THREAD = 0x00010000; |
| static const unsigned TGT_CLONE_NEWNS = 0x00020000; |
| static const unsigned TGT_CLONE_SYSVSEM = 0x00040000; |
| static const unsigned TGT_CLONE_SETTLS = 0x00080000; |
| static const unsigned TGT_CLONE_PARENT_SETTID = 0x00100000; |
| static const unsigned TGT_CLONE_CHILD_CLEARTID = 0x00200000; |
| static const unsigned TGT_CLONE_DETACHED = 0x00400000; |
| static const unsigned TGT_CLONE_UNTRACED = 0x00800000; |
| static const unsigned TGT_CLONE_CHILD_SETTID = 0x01000000; |
| static const unsigned TGT_CLONE_NEWUTS = 0x04000000; |
| static const unsigned TGT_CLONE_NEWIPC = 0x08000000; |
| static const unsigned TGT_CLONE_NEWUSER = 0x10000000; |
| static const unsigned TGT_CLONE_NEWPID = 0x20000000; |
| static const unsigned TGT_CLONE_NEWNET = 0x40000000; |
| static const unsigned TGT_CLONE_IO = 0x80000000; |
| |
| // linux-3.13-src/include/uapi/linux/wait.h |
| static const unsigned TGT_WNOHANG = 0x00000001; |
| static const unsigned TGT_WUNTRACED = 0x00000002; |
| static const unsigned TGT_WSTOPPED = TGT_WUNTRACED; |
| static const unsigned TGT_WEXITED = 0x00000004; |
| static const unsigned TGT_WCONTINUED = 0x00000008; |
| static const unsigned TGT_WNOWAIT = 0x01000000; |
| }; // class Linux |
| |
| #endif // __LINUX_HH__ |
