linux.hh revision 6744 
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 int64_t clock_t;
66    typedef uint32_t uid_t;
67    typedef uint32_t gid_t;
68    //@}
69
70    /// Stat buffer.  Note that we can't call it 'stat' since that
71    /// gets #defined to something else on some systems. This type
72    /// can be specialized by architecture specific "Linux" classes
73    typedef struct {
74        uint32_t        st_dev;         //!< device
75        uint32_t        st_ino;         //!< inode
76        uint32_t        st_mode;        //!< mode
77        uint32_t        st_nlink;       //!< link count
78        uint32_t        st_uid;         //!< owner's user ID
79        uint32_t        st_gid;         //!< owner's group ID
80        uint32_t        st_rdev;        //!< device number
81        int32_t         _pad1;          //!< for alignment
82        int64_t         st_size;        //!< file size in bytes
83        uint64_t        st_atimeX;      //!< time of last access
84        uint64_t        st_mtimeX;      //!< time of last modification
85        uint64_t        st_ctimeX;      //!< time of last status change
86        uint32_t        st_blksize;     //!< optimal I/O block size
87        int32_t         st_blocks;      //!< number of blocks allocated
88        uint32_t        st_flags;       //!< flags
89        uint32_t        st_gen;         //!< unknown
90    } tgt_stat;
91
92    // same for stat64
93    typedef struct {
94        uint64_t        st_dev;
95        uint64_t        st_ino;
96        uint64_t        st_rdev;
97        int64_t         st_size;
98        uint64_t        st_blocks;
99
100        uint32_t        st_mode;
101        uint32_t        st_uid;
102        uint32_t        st_gid;
103        uint32_t        st_blksize;
104        uint32_t        st_nlink;
105        uint32_t        __pad0;
106
107        uint64_t        st_atimeX;
108        uint64_t        st_atime_nsec;
109        uint64_t        st_mtimeX;
110        uint64_t        st_mtime_nsec;
111        uint64_t        st_ctimeX;
112        uint64_t        st_ctime_nsec;
113        int64_t         ___unused[3];
114    } tgt_stat64;
115
116    /// Length of strings in struct utsname (plus 1 for null char).
117    static const int _SYS_NMLN = 65;
118
119    /// Interface struct for uname().
120    struct utsname {
121        char sysname[_SYS_NMLN];        //!< System name.
122        char nodename[_SYS_NMLN];       //!< Node name.
123        char release[_SYS_NMLN];        //!< OS release.
124        char version[_SYS_NMLN];        //!< OS version.
125        char machine[_SYS_NMLN];        //!< Machine type.
126    };
127
128    /// Limit struct for getrlimit/setrlimit.
129    struct rlimit {
130        uint64_t  rlim_cur;     //!< soft limit
131        uint64_t  rlim_max;     //!< hard limit
132    };
133
134    /// For gettimeofday().
135    struct timeval {
136        int64_t tv_sec;         //!< seconds
137        int64_t tv_usec;        //!< microseconds
138    };
139
140    /// Clock ticks per second, for times().
141    static const int M5_SC_CLK_TCK = 100;
142
143    /// For times().
144    struct tms {
145        int64_t tms_utime;      //!< user time
146        int64_t tms_stime;      //!< system time
147        int64_t tms_cutime;     //!< user time of children
148        int64_t tms_cstime;     //!< system time of children
149    };
150
151    // For writev/readv
152    struct tgt_iovec {
153        uint64_t iov_base; // void *
154        uint64_t iov_len;
155    };
156
157
158    /// For getrusage().
159    struct rusage {
160        struct timeval ru_utime;        //!< user time used
161        struct timeval ru_stime;        //!< system time used
162        int64_t ru_maxrss;              //!< max rss
163        int64_t ru_ixrss;               //!< integral shared memory size
164        int64_t ru_idrss;               //!< integral unshared data "
165        int64_t ru_isrss;               //!< integral unshared stack "
166        int64_t ru_minflt;              //!< page reclaims - total vmfaults
167        int64_t ru_majflt;              //!< page faults
168        int64_t ru_nswap;               //!< swaps
169        int64_t ru_inblock;             //!< block input operations
170        int64_t ru_oublock;             //!< block output operations
171        int64_t ru_msgsnd;              //!< messages sent
172        int64_t ru_msgrcv;              //!< messages received
173        int64_t ru_nsignals;            //!< signals received
174        int64_t ru_nvcsw;               //!< voluntary context switches
175        int64_t ru_nivcsw;              //!< involuntary "
176    };
177
178    static int openSpecialFile(std::string path, LiveProcess *process, ThreadContext *tc);
179    static std::string procMeminfo(LiveProcess *process, ThreadContext *tc);
180
181};  // class Linux
182
183
184#endif // FULL_SYSTEM
185
186#endif // __LINUX_HH__
187