linux.hh revision 5795:72ce7502dc71 
1/*
2 * Copyright (c) 2004-2009 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Ali Saidi
29 */
30
31#ifndef __LINUX_HH__
32#define __LINUX_HH__
33#include "config/full_system.hh"
34
35#if FULL_SYSTEM
36
37class Linux {};
38
39#else //!FULL_SYSTEM
40
41#include <inttypes.h>
42#include <string>
43
44#include "kern/operatingsystem.hh"
45
46class ThreadContext;
47class LiveProcess;
48
49///
50/// This class encapsulates the types, structures, constants,
51/// functions, and syscall-number mappings specific to the Alpha Linux
52/// syscall interface.
53///
54class Linux : public OperatingSystem
55{
56
57  public:
58
59    //@{
60    /// Basic Linux types.
61    typedef uint64_t size_t;
62    typedef uint64_t off_t;
63    typedef int64_t time_t;
64    typedef uint32_t uid_t;
65    typedef uint32_t gid_t;
66    //@}
67
68    /// Stat buffer.  Note that we can't call it 'stat' since that
69    /// gets #defined to something else on some systems. This type
70    /// can be specialized by architecture specific "Linux" classes
71    typedef struct {
72        uint32_t        st_dev;         //!< device
73        uint32_t        st_ino;         //!< inode
74        uint32_t        st_mode;        //!< mode
75        uint32_t        st_nlink;       //!< link count
76        uint32_t        st_uid;         //!< owner's user ID
77        uint32_t        st_gid;         //!< owner's group ID
78        uint32_t        st_rdev;        //!< device number
79        int32_t         _pad1;          //!< for alignment
80        int64_t         st_size;        //!< file size in bytes
81        uint64_t        st_atimeX;      //!< time of last access
82        uint64_t        st_mtimeX;      //!< time of last modification
83        uint64_t        st_ctimeX;      //!< time of last status change
84        uint32_t        st_blksize;     //!< optimal I/O block size
85        int32_t         st_blocks;      //!< number of blocks allocated
86        uint32_t        st_flags;       //!< flags
87        uint32_t        st_gen;         //!< unknown
88    } tgt_stat;
89
90    // same for stat64
91    typedef struct {
92        uint64_t        st_dev;
93        uint64_t        st_ino;
94        uint64_t        st_rdev;
95        int64_t         st_size;
96        uint64_t        st_blocks;
97
98        uint32_t        st_mode;
99        uint32_t        st_uid;
100        uint32_t        st_gid;
101        uint32_t        st_blksize;
102        uint32_t        st_nlink;
103        uint32_t        __pad0;
104
105        uint64_t        st_atimeX;
106        uint64_t        st_atime_nsec;
107        uint64_t        st_mtimeX;
108        uint64_t        st_mtime_nsec;
109        uint64_t        st_ctimeX;
110        uint64_t        st_ctime_nsec;
111        int64_t         ___unused[3];
112    } tgt_stat64;
113
114    /// Length of strings in struct utsname (plus 1 for null char).
115    static const int _SYS_NMLN = 65;
116
117    /// Interface struct for uname().
118    struct utsname {
119        char sysname[_SYS_NMLN];        //!< System name.
120        char nodename[_SYS_NMLN];       //!< Node name.
121        char release[_SYS_NMLN];        //!< OS release.
122        char version[_SYS_NMLN];        //!< OS version.
123        char machine[_SYS_NMLN];        //!< Machine type.
124    };
125
126    /// Limit struct for getrlimit/setrlimit.
127    struct rlimit {
128        uint64_t  rlim_cur;     //!< soft limit
129        uint64_t  rlim_max;     //!< hard limit
130    };
131
132    /// For gettimeofday().
133    struct timeval {
134        int64_t tv_sec;         //!< seconds
135        int64_t tv_usec;        //!< microseconds
136    };
137
138    // For writev/readv
139    struct tgt_iovec {
140        uint64_t iov_base; // void *
141        uint64_t iov_len;
142    };
143
144
145    /// For getrusage().
146    struct rusage {
147        struct timeval ru_utime;        //!< user time used
148        struct timeval ru_stime;        //!< system time used
149        int64_t ru_maxrss;              //!< max rss
150        int64_t ru_ixrss;               //!< integral shared memory size
151        int64_t ru_idrss;               //!< integral unshared data "
152        int64_t ru_isrss;               //!< integral unshared stack "
153        int64_t ru_minflt;              //!< page reclaims - total vmfaults
154        int64_t ru_majflt;              //!< page faults
155        int64_t ru_nswap;               //!< swaps
156        int64_t ru_inblock;             //!< block input operations
157        int64_t ru_oublock;             //!< block output operations
158        int64_t ru_msgsnd;              //!< messages sent
159        int64_t ru_msgrcv;              //!< messages received
160        int64_t ru_nsignals;            //!< signals received
161        int64_t ru_nvcsw;               //!< voluntary context switches
162        int64_t ru_nivcsw;              //!< involuntary "
163    };
164
165    static int openSpecialFile(std::string path, LiveProcess *process, ThreadContext *tc);
166    static std::string procMeminfo(LiveProcess *process, ThreadContext *tc);
167
168};  // class Linux
169
170
171#endif // FULL_SYSTEM
172
173#endif // __LINUX_HH__
174