linux.hh (2764:e6fea7527b3c) linux.hh (3113:a6811aaea654)
1/*
2 * Copyright (c) 2004-2005 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;

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33#include "config/full_system.hh"
34
35#if FULL_SYSTEM
36
37class Linux {};
38
39#else //!FULL_SYSTEM
40
1/*
2 * Copyright (c) 2004-2005 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;

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33#include "config/full_system.hh"
34
35#if FULL_SYSTEM
36
37class Linux {};
38
39#else //!FULL_SYSTEM
40
41#include <dirent.h>
42#include <errno.h>
43#include <fcntl.h> // for host open() flags
44#include <string.h> // for memset()
45#include <sys/stat.h>
46#include <sys/types.h>
47#include <unistd.h>
41#include <inttypes.h>
48
42
49#include "arch/isa_traits.hh"
50#include "sim/syscall_emul.hh"
43#include "kern/operatingsystem.hh"
51
44
52class TranslatingPort;
53
54///
55/// This class encapsulates the types, structures, constants,
56/// functions, and syscall-number mappings specific to the Alpha Linux
57/// syscall interface.
58///
45///
46/// This class encapsulates the types, structures, constants,
47/// functions, and syscall-number mappings specific to the Alpha Linux
48/// syscall interface.
49///
59class Linux {
50class Linux : public OperatingSystem
51{
60
61 public:
62
63 //@{
64 /// Basic Linux types.
52
53 public:
54
55 //@{
56 /// Basic Linux types.
65 typedef uint64_t size_t;
57/* typedef uint64_t size_t;
66 typedef uint64_t off_t;
67 typedef int64_t time_t;
68 typedef uint32_t uid_t;
58 typedef uint64_t off_t;
59 typedef int64_t time_t;
60 typedef uint32_t uid_t;
69 typedef uint32_t gid_t;
61 typedef uint32_t gid_t;*/
70 //@}
71
62 //@}
63
72#if NO_STAT64
73 typedef struct stat hst_stat;
74 typedef struct stat hst_stat64;
75#else
76 typedef struct stat hst_stat ;
77 typedef struct stat64 hst_stat64;
78#endif
79
80 /// Stat buffer. Note that we can't call it 'stat' since that
64 /// Stat buffer. Note that we can't call it 'stat' since that
81 /// gets #defined to something else on some systems.
82 struct tgt_stat {
65 /// gets #defined to something else on some systems. This type
66 /// can be specialized by architecture specific "Linux" classes
67 typedef struct {
83 uint32_t st_dev; //!< device
84 uint32_t st_ino; //!< inode
85 uint32_t st_mode; //!< mode
86 uint32_t st_nlink; //!< link count
87 uint32_t st_uid; //!< owner's user ID
88 uint32_t st_gid; //!< owner's group ID
89 uint32_t st_rdev; //!< device number
90 int32_t _pad1; //!< for alignment
91 int64_t st_size; //!< file size in bytes
92 uint64_t st_atimeX; //!< time of last access
93 uint64_t st_mtimeX; //!< time of last modification
94 uint64_t st_ctimeX; //!< time of last status change
95 uint32_t st_blksize; //!< optimal I/O block size
96 int32_t st_blocks; //!< number of blocks allocated
97 uint32_t st_flags; //!< flags
98 uint32_t st_gen; //!< unknown
68 uint32_t st_dev; //!< device
69 uint32_t st_ino; //!< inode
70 uint32_t st_mode; //!< mode
71 uint32_t st_nlink; //!< link count
72 uint32_t st_uid; //!< owner's user ID
73 uint32_t st_gid; //!< owner's group ID
74 uint32_t st_rdev; //!< device number
75 int32_t _pad1; //!< for alignment
76 int64_t st_size; //!< file size in bytes
77 uint64_t st_atimeX; //!< time of last access
78 uint64_t st_mtimeX; //!< time of last modification
79 uint64_t st_ctimeX; //!< time of last status change
80 uint32_t st_blksize; //!< optimal I/O block size
81 int32_t st_blocks; //!< number of blocks allocated
82 uint32_t st_flags; //!< flags
83 uint32_t st_gen; //!< unknown
99 };
84 } tgt_stat;
100
101 // same for stat64
85
86 // same for stat64
102 struct tgt_stat64 {
87 typedef struct {
103 uint64_t st_dev;
104 uint64_t st_ino;
105 uint64_t st_rdev;
106 int64_t st_size;
107 uint64_t st_blocks;
108
109 uint32_t st_mode;
110 uint32_t st_uid;
111 uint32_t st_gid;
112 uint32_t st_blksize;
113 uint32_t st_nlink;
114 uint32_t __pad0;
115
88 uint64_t st_dev;
89 uint64_t st_ino;
90 uint64_t st_rdev;
91 int64_t st_size;
92 uint64_t st_blocks;
93
94 uint32_t st_mode;
95 uint32_t st_uid;
96 uint32_t st_gid;
97 uint32_t st_blksize;
98 uint32_t st_nlink;
99 uint32_t __pad0;
100
116 uint64_t tgt_st_atime;
101 uint64_t st_atimeX;
117 uint64_t st_atime_nsec;
102 uint64_t st_atime_nsec;
118 uint64_t tgt_st_mtime;
103 uint64_t st_mtimeX;
119 uint64_t st_mtime_nsec;
104 uint64_t st_mtime_nsec;
120 uint64_t tgt_st_ctime;
105 uint64_t st_ctimeX;
121 uint64_t st_ctime_nsec;
122 int64_t ___unused[3];
106 uint64_t st_ctime_nsec;
107 int64_t ___unused[3];
123 };
108 } tgt_stat64;
124
125 /// Length of strings in struct utsname (plus 1 for null char).
126 static const int _SYS_NMLN = 65;
127
128 /// Interface struct for uname().
129 struct utsname {
130 char sysname[_SYS_NMLN]; //!< System name.
131 char nodename[_SYS_NMLN]; //!< Node name.

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168 int64_t ru_oublock; //!< block output operations
169 int64_t ru_msgsnd; //!< messages sent
170 int64_t ru_msgrcv; //!< messages received
171 int64_t ru_nsignals; //!< signals received
172 int64_t ru_nvcsw; //!< voluntary context switches
173 int64_t ru_nivcsw; //!< involuntary "
174 };
175
109
110 /// Length of strings in struct utsname (plus 1 for null char).
111 static const int _SYS_NMLN = 65;
112
113 /// Interface struct for uname().
114 struct utsname {
115 char sysname[_SYS_NMLN]; //!< System name.
116 char nodename[_SYS_NMLN]; //!< Node name.

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153 int64_t ru_oublock; //!< block output operations
154 int64_t ru_msgsnd; //!< messages sent
155 int64_t ru_msgrcv; //!< messages received
156 int64_t ru_nsignals; //!< signals received
157 int64_t ru_nvcsw; //!< voluntary context switches
158 int64_t ru_nivcsw; //!< involuntary "
159 };
160
176 /// Helper function to convert a host stat buffer to a target stat
177 /// buffer. Also copies the target buffer out to the simulated
178 /// memory space. Used by stat(), fstat(), and lstat().
179#if !NO_STAT64
180 static void
181 copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat *host)
182 {
183 using namespace TheISA;
184
185 TypedBufferArg<Linux::tgt_stat> tgt(addr);
186
187 tgt->st_dev = htog(host->st_dev);
188 tgt->st_ino = htog(host->st_ino);
189 tgt->st_mode = htog(host->st_mode);
190 tgt->st_nlink = htog(host->st_nlink);
191 tgt->st_uid = htog(host->st_uid);
192 tgt->st_gid = htog(host->st_gid);
193 tgt->st_rdev = htog(host->st_rdev);
194 tgt->st_size = htog(host->st_size);
195 tgt->st_atimeX = htog(host->st_atime);
196 tgt->st_mtimeX = htog(host->st_mtime);
197 tgt->st_ctimeX = htog(host->st_ctime);
198 tgt->st_blksize = htog(host->st_blksize);
199 tgt->st_blocks = htog(host->st_blocks);
200
201 tgt.copyOut(mem);
202 }
203#else
204 // Third version for bsd systems which no longer have any support for
205 // the old stat() call and stat() is actually a stat64()
206 static void
207 copyOutStatBuf(TranslatingPort *mem, Addr addr, hst_stat64 *host)
208 {
209 using namespace TheISA;
210
211 TypedBufferArg<Linux::tgt_stat> tgt(addr);
212
213 tgt->st_dev = htog(host->st_dev);
214 tgt->st_ino = htog(host->st_ino);
215 tgt->st_mode = htog(host->st_mode);
216 tgt->st_nlink = htog(host->st_nlink);
217 tgt->st_uid = htog(host->st_uid);
218 tgt->st_gid = htog(host->st_gid);
219 tgt->st_rdev = htog(host->st_rdev);
220 tgt->st_size = htog(host->st_size);
221 tgt->st_atimeX = htog(host->st_atime);
222 tgt->st_mtimeX = htog(host->st_mtime);
223 tgt->st_ctimeX = htog(host->st_ctime);
224 tgt->st_blksize = htog(host->st_blksize);
225 tgt->st_blocks = htog(host->st_blocks);
226
227 tgt.copyOut(mem);
228 }
229#endif
230
231
232 // Same for stat64
233 static void
234 copyOutStat64Buf(TranslatingPort *mem, int fd, Addr addr, hst_stat64 *host)
235 {
236 using namespace TheISA;
237
238 TypedBufferArg<Linux::tgt_stat64> tgt(addr);
239
240 // fd == 1 checks are because libc does some checks
241 // that the stdout is interactive vs. a file
242 // this makes it work on non-linux systems
243 if (fd == 1)
244 tgt->st_dev = htog((uint64_t)0xA);
245 else
246 tgt->st_dev = htog((uint64_t)host->st_dev);
247 // XXX What about STAT64_HAS_BROKEN_ST_INO ???
248 tgt->st_ino = htog((uint64_t)host->st_ino);
249 if (fd == 1)
250 tgt->st_rdev = htog((uint64_t)0x880d);
251 else
252 tgt->st_rdev = htog((uint64_t)host->st_rdev);
253 tgt->st_size = htog((int64_t)host->st_size);
254 tgt->st_blocks = htog((uint64_t)host->st_blocks);
255
256 if (fd == 1)
257 tgt->st_mode = htog((uint32_t)0x2190);
258 else
259 tgt->st_mode = htog((uint32_t)host->st_mode);
260 tgt->st_uid = htog((uint32_t)host->st_uid);
261 tgt->st_gid = htog((uint32_t)host->st_gid);
262 tgt->st_blksize = htog((uint32_t)host->st_blksize);
263 tgt->st_nlink = htog((uint32_t)host->st_nlink);
264 tgt->tgt_st_atime = htog((uint64_t)host->st_atime);
265 tgt->tgt_st_mtime = htog((uint64_t)host->st_mtime);
266 tgt->tgt_st_ctime = htog((uint64_t)host->st_ctime);
267#if defined(STAT_HAVE_NSEC)
268 tgt->st_atime_nsec = htog(host->st_atime_nsec);
269 tgt->st_mtime_nsec = htog(host->st_mtime_nsec);
270 tgt->st_ctime_nsec = htog(host->st_ctime_nsec);
271#else
272 tgt->st_atime_nsec = 0;
273 tgt->st_mtime_nsec = 0;
274 tgt->st_ctime_nsec = 0;
275#endif
276
277 tgt.copyOut(mem);
278 }
279
280}; // class Linux
281
282
283#endif // FULL_SYSTEM
284
285#endif // __LINUX_HH__
161}; // class Linux
162
163
164#endif // FULL_SYSTEM
165
166#endif // __LINUX_HH__