linux.hh revision 6215 
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
34#include "base/types.hh"
35#include "config/full_system.hh"
36
37#if FULL_SYSTEM
38
39class Linux {};
40
41#else //!FULL_SYSTEM
42
43#include <string>
44
45#include "kern/operatingsystem.hh"
46
47class ThreadContext;
48class LiveProcess;
49
50///
51/// This class encapsulates the types, structures, constants,
52/// functions, and syscall-number mappings specific to the Alpha Linux
53/// syscall interface.
54///
55class Linux : public OperatingSystem
56{
57
58  public:
59
60    //@{
61    /// Basic Linux types.
62    typedef uint64_t size_t;
63    typedef uint64_t off_t;
64    typedef int64_t time_t;
65    typedef uint32_t uid_t;
66    typedef uint32_t gid_t;
67    //@}
68
69    /// Stat buffer.  Note that we can't call it 'stat' since that
70    /// gets #defined to something else on some systems. This type
71    /// can be specialized by architecture specific "Linux" classes
72    typedef struct {
73        uint32_t        st_dev;         //!< device
74        uint32_t        st_ino;         //!< inode
75        uint32_t        st_mode;        //!< mode
76        uint32_t        st_nlink;       //!< link count
77        uint32_t        st_uid;         //!< owner's user ID
78        uint32_t        st_gid;         //!< owner's group ID
79        uint32_t        st_rdev;        //!< device number
80        int32_t         _pad1;          //!< for alignment
81        int64_t         st_size;        //!< file size in bytes
82        uint64_t        st_atimeX;      //!< time of last access
83        uint64_t        st_mtimeX;      //!< time of last modification
84        uint64_t        st_ctimeX;      //!< time of last status change
85        uint32_t        st_blksize;     //!< optimal I/O block size
86        int32_t         st_blocks;      //!< number of blocks allocated
87        uint32_t        st_flags;       //!< flags
88        uint32_t        st_gen;         //!< unknown
89    } tgt_stat;
90
91    // same for stat64
92    typedef struct {
93        uint64_t        st_dev;
94        uint64_t        st_ino;
95        uint64_t        st_rdev;
96        int64_t         st_size;
97        uint64_t        st_blocks;
98
99        uint32_t        st_mode;
100        uint32_t        st_uid;
101        uint32_t        st_gid;
102        uint32_t        st_blksize;
103        uint32_t        st_nlink;
104        uint32_t        __pad0;
105
106        uint64_t        st_atimeX;
107        uint64_t        st_atime_nsec;
108        uint64_t        st_mtimeX;
109        uint64_t        st_mtime_nsec;
110        uint64_t        st_ctimeX;
111        uint64_t        st_ctime_nsec;
112        int64_t         ___unused[3];
113    } tgt_stat64;
114
115    /// Length of strings in struct utsname (plus 1 for null char).
116    static const int _SYS_NMLN = 65;
117
118    /// Interface struct for uname().
119    struct utsname {
120        char sysname[_SYS_NMLN];        //!< System name.
121        char nodename[_SYS_NMLN];       //!< Node name.
122        char release[_SYS_NMLN];        //!< OS release.
123        char version[_SYS_NMLN];        //!< OS version.
124        char machine[_SYS_NMLN];        //!< Machine type.
125    };
126
127    /// Limit struct for getrlimit/setrlimit.
128    struct rlimit {
129        uint64_t  rlim_cur;     //!< soft limit
130        uint64_t  rlim_max;     //!< hard limit
131    };
132
133    /// For gettimeofday().
134    struct timeval {
135        int64_t tv_sec;         //!< seconds
136        int64_t tv_usec;        //!< microseconds
137    };
138
139    // For writev/readv
140    struct tgt_iovec {
141        uint64_t iov_base; // void *
142        uint64_t iov_len;
143    };
144
145
146    /// For getrusage().
147    struct rusage {
148        struct timeval ru_utime;        //!< user time used
149        struct timeval ru_stime;        //!< system time used
150        int64_t ru_maxrss;              //!< max rss
151        int64_t ru_ixrss;               //!< integral shared memory size
152        int64_t ru_idrss;               //!< integral unshared data "
153        int64_t ru_isrss;               //!< integral unshared stack "
154        int64_t ru_minflt;              //!< page reclaims - total vmfaults
155        int64_t ru_majflt;              //!< page faults
156        int64_t ru_nswap;               //!< swaps
157        int64_t ru_inblock;             //!< block input operations
158        int64_t ru_oublock;             //!< block output operations
159        int64_t ru_msgsnd;              //!< messages sent
160        int64_t ru_msgrcv;              //!< messages received
161        int64_t ru_nsignals;            //!< signals received
162        int64_t ru_nvcsw;               //!< voluntary context switches
163        int64_t ru_nivcsw;              //!< involuntary "
164    };
165
166    static int openSpecialFile(std::string path, LiveProcess *process, ThreadContext *tc);
167    static std::string procMeminfo(LiveProcess *process, ThreadContext *tc);
168
169};  // class Linux
170
171
172#endif // FULL_SYSTEM
173
174#endif // __LINUX_HH__
175