1/*
2 * Copyright (c) 2003-2005 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;
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: Steve Reinhardt
29 * Kevin Lim
30 */
31
32#ifndef __SIM_SYSCALL_EMUL_HH__
33#define __SIM_SYSCALL_EMUL_HH__
34
35#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \
36 defined(__FreeBSD__) || defined(__CYGWIN__))
37
38///
39/// @file syscall_emul.hh
40///
41/// This file defines objects used to emulate syscalls from the target
42/// application on the host machine.
43
44#ifdef __CYGWIN32__
45#include <sys/fcntl.h> // for O_BINARY
46#endif
47#include <sys/stat.h>
48#include <sys/time.h>
49#include <sys/uio.h>
50#include <fcntl.h>
51
52#include <cerrno>
53#include <string>
54
55#include "base/chunk_generator.hh"
56#include "base/intmath.hh" // for RoundUp
57#include "base/misc.hh"
58#include "base/trace.hh"
59#include "base/types.hh"
60#include "config/the_isa.hh"
61#include "cpu/base.hh"
62#include "cpu/thread_context.hh"
63#include "debug/SyscallVerbose.hh"
64#include "mem/page_table.hh"
| 1/*
2 * Copyright (c) 2003-2005 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;
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: Steve Reinhardt
29 * Kevin Lim
30 */
31
32#ifndef __SIM_SYSCALL_EMUL_HH__
33#define __SIM_SYSCALL_EMUL_HH__
34
35#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \
36 defined(__FreeBSD__) || defined(__CYGWIN__))
37
38///
39/// @file syscall_emul.hh
40///
41/// This file defines objects used to emulate syscalls from the target
42/// application on the host machine.
43
44#ifdef __CYGWIN32__
45#include <sys/fcntl.h> // for O_BINARY
46#endif
47#include <sys/stat.h>
48#include <sys/time.h>
49#include <sys/uio.h>
50#include <fcntl.h>
51
52#include <cerrno>
53#include <string>
54
55#include "base/chunk_generator.hh"
56#include "base/intmath.hh" // for RoundUp
57#include "base/misc.hh"
58#include "base/trace.hh"
59#include "base/types.hh"
60#include "config/the_isa.hh"
61#include "cpu/base.hh"
62#include "cpu/thread_context.hh"
63#include "debug/SyscallVerbose.hh"
64#include "mem/page_table.hh"
|
65#include "mem/se_translating_port_proxy.hh"
| 65#include "mem/translating_port.hh"
|
66#include "sim/byteswap.hh"
67#include "sim/process.hh"
| 66#include "sim/byteswap.hh"
67#include "sim/process.hh"
|
| 68#include "sim/syscallreturn.hh"
|
68#include "sim/system.hh"
69
70///
71/// System call descriptor.
72///
73class SyscallDesc {
74
75 public:
76
77 /// Typedef for target syscall handler functions.
78 typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num,
79 LiveProcess *, ThreadContext *);
80
81 const char *name; //!< Syscall name (e.g., "open").
82 FuncPtr funcPtr; //!< Pointer to emulation function.
83 int flags; //!< Flags (see Flags enum).
84
85 /// Flag values for controlling syscall behavior.
86 enum Flags {
87 /// Don't set return regs according to funcPtr return value.
88 /// Used for syscalls with non-standard return conventions
89 /// that explicitly set the ThreadContext regs (e.g.,
90 /// sigreturn).
91 SuppressReturnValue = 1
92 };
93
94 /// Constructor.
95 SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0)
96 : name(_name), funcPtr(_funcPtr), flags(_flags)
97 {
98 }
99
100 /// Emulate the syscall. Public interface for calling through funcPtr.
101 void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc);
102};
103
104
105class BaseBufferArg {
106
107 public:
108
109 BaseBufferArg(Addr _addr, int _size) : addr(_addr), size(_size)
110 {
111 bufPtr = new uint8_t[size];
112 // clear out buffer: in case we only partially populate this,
113 // and then do a copyOut(), we want to make sure we don't
114 // introduce any random junk into the simulated address space
115 memset(bufPtr, 0, size);
116 }
117
118 virtual ~BaseBufferArg() { delete [] bufPtr; }
119
120 //
121 // copy data into simulator space (read from target memory)
122 //
| 69#include "sim/system.hh"
70
71///
72/// System call descriptor.
73///
74class SyscallDesc {
75
76 public:
77
78 /// Typedef for target syscall handler functions.
79 typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num,
80 LiveProcess *, ThreadContext *);
81
82 const char *name; //!< Syscall name (e.g., "open").
83 FuncPtr funcPtr; //!< Pointer to emulation function.
84 int flags; //!< Flags (see Flags enum).
85
86 /// Flag values for controlling syscall behavior.
87 enum Flags {
88 /// Don't set return regs according to funcPtr return value.
89 /// Used for syscalls with non-standard return conventions
90 /// that explicitly set the ThreadContext regs (e.g.,
91 /// sigreturn).
92 SuppressReturnValue = 1
93 };
94
95 /// Constructor.
96 SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0)
97 : name(_name), funcPtr(_funcPtr), flags(_flags)
98 {
99 }
100
101 /// Emulate the syscall. Public interface for calling through funcPtr.
102 void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc);
103};
104
105
106class BaseBufferArg {
107
108 public:
109
110 BaseBufferArg(Addr _addr, int _size) : addr(_addr), size(_size)
111 {
112 bufPtr = new uint8_t[size];
113 // clear out buffer: in case we only partially populate this,
114 // and then do a copyOut(), we want to make sure we don't
115 // introduce any random junk into the simulated address space
116 memset(bufPtr, 0, size);
117 }
118
119 virtual ~BaseBufferArg() { delete [] bufPtr; }
120
121 //
122 // copy data into simulator space (read from target memory)
123 //
|
123 virtual bool copyIn(SETranslatingPortProxy* memproxy)
| 124 virtual bool copyIn(TranslatingPort *memport)
|
124 {
| 125 {
|
125 memproxy->readBlob(addr, bufPtr, size);
| 126 memport->readBlob(addr, bufPtr, size);
|
126 return true; // no EFAULT detection for now
127 }
128
129 //
130 // copy data out of simulator space (write to target memory)
131 //
| 127 return true; // no EFAULT detection for now
128 }
129
130 //
131 // copy data out of simulator space (write to target memory)
132 //
|
132 virtual bool copyOut(SETranslatingPortProxy* memproxy)
| 133 virtual bool copyOut(TranslatingPort *memport)
|
133 {
| 134 {
|
134 memproxy->writeBlob(addr, bufPtr, size);
| 135 memport->writeBlob(addr, bufPtr, size);
|
135 return true; // no EFAULT detection for now
136 }
137
138 protected:
139 Addr addr;
140 int size;
141 uint8_t *bufPtr;
142};
143
144
145class BufferArg : public BaseBufferArg
146{
147 public:
148 BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { }
149 void *bufferPtr() { return bufPtr; }
150};
151
152template <class T>
153class TypedBufferArg : public BaseBufferArg
154{
155 public:
156 // user can optionally specify a specific number of bytes to
157 // allocate to deal with those structs that have variable-size
158 // arrays at the end
159 TypedBufferArg(Addr _addr, int _size = sizeof(T))
160 : BaseBufferArg(_addr, _size)
161 { }
162
163 // type case
164 operator T*() { return (T *)bufPtr; }
165
166 // dereference operators
167 T &operator*() { return *((T *)bufPtr); }
168 T* operator->() { return (T *)bufPtr; }
169 T &operator[](int i) { return ((T *)bufPtr)[i]; }
170};
171
172//////////////////////////////////////////////////////////////////////
173//
174// The following emulation functions are generic enough that they
175// don't need to be recompiled for different emulated OS's. They are
176// defined in sim/syscall_emul.cc.
177//
178//////////////////////////////////////////////////////////////////////
179
180
181/// Handler for unimplemented syscalls that we haven't thought about.
182SyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
183 LiveProcess *p, ThreadContext *tc);
184
185/// Handler for unimplemented syscalls that we never intend to
186/// implement (signal handling, etc.) and should not affect the correct
187/// behavior of the program. Print a warning only if the appropriate
188/// trace flag is enabled. Return success to the target program.
189SyscallReturn ignoreFunc(SyscallDesc *desc, int num,
190 LiveProcess *p, ThreadContext *tc);
191SyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num,
192 LiveProcess *p, ThreadContext *tc);
193
194/// Target exit() handler: terminate current context.
195SyscallReturn exitFunc(SyscallDesc *desc, int num,
196 LiveProcess *p, ThreadContext *tc);
197
198/// Target exit_group() handler: terminate simulation. (exit all threads)
199SyscallReturn exitGroupFunc(SyscallDesc *desc, int num,
200 LiveProcess *p, ThreadContext *tc);
201
202/// Target getpagesize() handler.
203SyscallReturn getpagesizeFunc(SyscallDesc *desc, int num,
204 LiveProcess *p, ThreadContext *tc);
205
206/// Target brk() handler: set brk address.
207SyscallReturn brkFunc(SyscallDesc *desc, int num,
208 LiveProcess *p, ThreadContext *tc);
209
210/// Target close() handler.
211SyscallReturn closeFunc(SyscallDesc *desc, int num,
212 LiveProcess *p, ThreadContext *tc);
213
214/// Target read() handler.
215SyscallReturn readFunc(SyscallDesc *desc, int num,
216 LiveProcess *p, ThreadContext *tc);
217
218/// Target write() handler.
219SyscallReturn writeFunc(SyscallDesc *desc, int num,
220 LiveProcess *p, ThreadContext *tc);
221
222/// Target lseek() handler.
223SyscallReturn lseekFunc(SyscallDesc *desc, int num,
224 LiveProcess *p, ThreadContext *tc);
225
226/// Target _llseek() handler.
227SyscallReturn _llseekFunc(SyscallDesc *desc, int num,
228 LiveProcess *p, ThreadContext *tc);
229
230/// Target munmap() handler.
231SyscallReturn munmapFunc(SyscallDesc *desc, int num,
232 LiveProcess *p, ThreadContext *tc);
233
234/// Target gethostname() handler.
235SyscallReturn gethostnameFunc(SyscallDesc *desc, int num,
236 LiveProcess *p, ThreadContext *tc);
237
238/// Target getcwd() handler.
239SyscallReturn getcwdFunc(SyscallDesc *desc, int num,
240 LiveProcess *p, ThreadContext *tc);
241
242/// Target unlink() handler.
243SyscallReturn readlinkFunc(SyscallDesc *desc, int num,
244 LiveProcess *p, ThreadContext *tc);
245
246/// Target unlink() handler.
247SyscallReturn unlinkFunc(SyscallDesc *desc, int num,
248 LiveProcess *p, ThreadContext *tc);
249
250/// Target mkdir() handler.
251SyscallReturn mkdirFunc(SyscallDesc *desc, int num,
252 LiveProcess *p, ThreadContext *tc);
253
254/// Target rename() handler.
255SyscallReturn renameFunc(SyscallDesc *desc, int num,
256 LiveProcess *p, ThreadContext *tc);
257
258
259/// Target truncate() handler.
260SyscallReturn truncateFunc(SyscallDesc *desc, int num,
261 LiveProcess *p, ThreadContext *tc);
262
263
264/// Target ftruncate() handler.
265SyscallReturn ftruncateFunc(SyscallDesc *desc, int num,
266 LiveProcess *p, ThreadContext *tc);
267
268
269/// Target truncate64() handler.
270SyscallReturn truncate64Func(SyscallDesc *desc, int num,
271 LiveProcess *p, ThreadContext *tc);
272
273/// Target ftruncate64() handler.
274SyscallReturn ftruncate64Func(SyscallDesc *desc, int num,
275 LiveProcess *p, ThreadContext *tc);
276
277
278/// Target umask() handler.
279SyscallReturn umaskFunc(SyscallDesc *desc, int num,
280 LiveProcess *p, ThreadContext *tc);
281
282
283/// Target chown() handler.
284SyscallReturn chownFunc(SyscallDesc *desc, int num,
285 LiveProcess *p, ThreadContext *tc);
286
287
288/// Target fchown() handler.
289SyscallReturn fchownFunc(SyscallDesc *desc, int num,
290 LiveProcess *p, ThreadContext *tc);
291
292/// Target dup() handler.
293SyscallReturn dupFunc(SyscallDesc *desc, int num,
294 LiveProcess *process, ThreadContext *tc);
295
296/// Target fnctl() handler.
297SyscallReturn fcntlFunc(SyscallDesc *desc, int num,
298 LiveProcess *process, ThreadContext *tc);
299
300/// Target fcntl64() handler.
301SyscallReturn fcntl64Func(SyscallDesc *desc, int num,
302 LiveProcess *process, ThreadContext *tc);
303
304/// Target setuid() handler.
305SyscallReturn setuidFunc(SyscallDesc *desc, int num,
306 LiveProcess *p, ThreadContext *tc);
307
308/// Target getpid() handler.
309SyscallReturn getpidFunc(SyscallDesc *desc, int num,
310 LiveProcess *p, ThreadContext *tc);
311
312/// Target getuid() handler.
313SyscallReturn getuidFunc(SyscallDesc *desc, int num,
314 LiveProcess *p, ThreadContext *tc);
315
316/// Target getgid() handler.
317SyscallReturn getgidFunc(SyscallDesc *desc, int num,
318 LiveProcess *p, ThreadContext *tc);
319
320/// Target getppid() handler.
321SyscallReturn getppidFunc(SyscallDesc *desc, int num,
322 LiveProcess *p, ThreadContext *tc);
323
324/// Target geteuid() handler.
325SyscallReturn geteuidFunc(SyscallDesc *desc, int num,
326 LiveProcess *p, ThreadContext *tc);
327
328/// Target getegid() handler.
329SyscallReturn getegidFunc(SyscallDesc *desc, int num,
330 LiveProcess *p, ThreadContext *tc);
331
332/// Target clone() handler.
333SyscallReturn cloneFunc(SyscallDesc *desc, int num,
334 LiveProcess *p, ThreadContext *tc);
335
336
337/// Pseudo Funcs - These functions use a different return convension,
338/// returning a second value in a register other than the normal return register
339SyscallReturn pipePseudoFunc(SyscallDesc *desc, int num,
340 LiveProcess *process, ThreadContext *tc);
341
342/// Target getpidPseudo() handler.
343SyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num,
344 LiveProcess *p, ThreadContext *tc);
345
346/// Target getuidPseudo() handler.
347SyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num,
348 LiveProcess *p, ThreadContext *tc);
349
350/// Target getgidPseudo() handler.
351SyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num,
352 LiveProcess *p, ThreadContext *tc);
353
354
355/// A readable name for 1,000,000, for converting microseconds to seconds.
356const int one_million = 1000000;
357
358/// Approximate seconds since the epoch (1/1/1970). About a billion,
359/// by my reckoning. We want to keep this a constant (not use the
360/// real-world time) to keep simulations repeatable.
361const unsigned seconds_since_epoch = 1000000000;
362
363/// Helper function to convert current elapsed time to seconds and
364/// microseconds.
365template <class T1, class T2>
366void
367getElapsedTime(T1 &sec, T2 &usec)
368{
369 int elapsed_usecs = curTick() / SimClock::Int::us;
370 sec = elapsed_usecs / one_million;
371 usec = elapsed_usecs % one_million;
372}
373
374//////////////////////////////////////////////////////////////////////
375//
376// The following emulation functions are generic, but need to be
377// templated to account for differences in types, constants, etc.
378//
379//////////////////////////////////////////////////////////////////////
380
381#if NO_STAT64
382 typedef struct stat hst_stat;
383 typedef struct stat hst_stat64;
384#else
385 typedef struct stat hst_stat;
386 typedef struct stat64 hst_stat64;
387#endif
388
389//// Helper function to convert a host stat buffer to a target stat
390//// buffer. Also copies the target buffer out to the simulated
391//// memory space. Used by stat(), fstat(), and lstat().
392
393template <typename target_stat, typename host_stat>
394static void
395convertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false)
396{
397 using namespace TheISA;
398
399 if (fakeTTY)
400 tgt->st_dev = 0xA;
401 else
402 tgt->st_dev = host->st_dev;
| 136 return true; // no EFAULT detection for now
137 }
138
139 protected:
140 Addr addr;
141 int size;
142 uint8_t *bufPtr;
143};
144
145
146class BufferArg : public BaseBufferArg
147{
148 public:
149 BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { }
150 void *bufferPtr() { return bufPtr; }
151};
152
153template <class T>
154class TypedBufferArg : public BaseBufferArg
155{
156 public:
157 // user can optionally specify a specific number of bytes to
158 // allocate to deal with those structs that have variable-size
159 // arrays at the end
160 TypedBufferArg(Addr _addr, int _size = sizeof(T))
161 : BaseBufferArg(_addr, _size)
162 { }
163
164 // type case
165 operator T*() { return (T *)bufPtr; }
166
167 // dereference operators
168 T &operator*() { return *((T *)bufPtr); }
169 T* operator->() { return (T *)bufPtr; }
170 T &operator[](int i) { return ((T *)bufPtr)[i]; }
171};
172
173//////////////////////////////////////////////////////////////////////
174//
175// The following emulation functions are generic enough that they
176// don't need to be recompiled for different emulated OS's. They are
177// defined in sim/syscall_emul.cc.
178//
179//////////////////////////////////////////////////////////////////////
180
181
182/// Handler for unimplemented syscalls that we haven't thought about.
183SyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
184 LiveProcess *p, ThreadContext *tc);
185
186/// Handler for unimplemented syscalls that we never intend to
187/// implement (signal handling, etc.) and should not affect the correct
188/// behavior of the program. Print a warning only if the appropriate
189/// trace flag is enabled. Return success to the target program.
190SyscallReturn ignoreFunc(SyscallDesc *desc, int num,
191 LiveProcess *p, ThreadContext *tc);
192SyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num,
193 LiveProcess *p, ThreadContext *tc);
194
195/// Target exit() handler: terminate current context.
196SyscallReturn exitFunc(SyscallDesc *desc, int num,
197 LiveProcess *p, ThreadContext *tc);
198
199/// Target exit_group() handler: terminate simulation. (exit all threads)
200SyscallReturn exitGroupFunc(SyscallDesc *desc, int num,
201 LiveProcess *p, ThreadContext *tc);
202
203/// Target getpagesize() handler.
204SyscallReturn getpagesizeFunc(SyscallDesc *desc, int num,
205 LiveProcess *p, ThreadContext *tc);
206
207/// Target brk() handler: set brk address.
208SyscallReturn brkFunc(SyscallDesc *desc, int num,
209 LiveProcess *p, ThreadContext *tc);
210
211/// Target close() handler.
212SyscallReturn closeFunc(SyscallDesc *desc, int num,
213 LiveProcess *p, ThreadContext *tc);
214
215/// Target read() handler.
216SyscallReturn readFunc(SyscallDesc *desc, int num,
217 LiveProcess *p, ThreadContext *tc);
218
219/// Target write() handler.
220SyscallReturn writeFunc(SyscallDesc *desc, int num,
221 LiveProcess *p, ThreadContext *tc);
222
223/// Target lseek() handler.
224SyscallReturn lseekFunc(SyscallDesc *desc, int num,
225 LiveProcess *p, ThreadContext *tc);
226
227/// Target _llseek() handler.
228SyscallReturn _llseekFunc(SyscallDesc *desc, int num,
229 LiveProcess *p, ThreadContext *tc);
230
231/// Target munmap() handler.
232SyscallReturn munmapFunc(SyscallDesc *desc, int num,
233 LiveProcess *p, ThreadContext *tc);
234
235/// Target gethostname() handler.
236SyscallReturn gethostnameFunc(SyscallDesc *desc, int num,
237 LiveProcess *p, ThreadContext *tc);
238
239/// Target getcwd() handler.
240SyscallReturn getcwdFunc(SyscallDesc *desc, int num,
241 LiveProcess *p, ThreadContext *tc);
242
243/// Target unlink() handler.
244SyscallReturn readlinkFunc(SyscallDesc *desc, int num,
245 LiveProcess *p, ThreadContext *tc);
246
247/// Target unlink() handler.
248SyscallReturn unlinkFunc(SyscallDesc *desc, int num,
249 LiveProcess *p, ThreadContext *tc);
250
251/// Target mkdir() handler.
252SyscallReturn mkdirFunc(SyscallDesc *desc, int num,
253 LiveProcess *p, ThreadContext *tc);
254
255/// Target rename() handler.
256SyscallReturn renameFunc(SyscallDesc *desc, int num,
257 LiveProcess *p, ThreadContext *tc);
258
259
260/// Target truncate() handler.
261SyscallReturn truncateFunc(SyscallDesc *desc, int num,
262 LiveProcess *p, ThreadContext *tc);
263
264
265/// Target ftruncate() handler.
266SyscallReturn ftruncateFunc(SyscallDesc *desc, int num,
267 LiveProcess *p, ThreadContext *tc);
268
269
270/// Target truncate64() handler.
271SyscallReturn truncate64Func(SyscallDesc *desc, int num,
272 LiveProcess *p, ThreadContext *tc);
273
274/// Target ftruncate64() handler.
275SyscallReturn ftruncate64Func(SyscallDesc *desc, int num,
276 LiveProcess *p, ThreadContext *tc);
277
278
279/// Target umask() handler.
280SyscallReturn umaskFunc(SyscallDesc *desc, int num,
281 LiveProcess *p, ThreadContext *tc);
282
283
284/// Target chown() handler.
285SyscallReturn chownFunc(SyscallDesc *desc, int num,
286 LiveProcess *p, ThreadContext *tc);
287
288
289/// Target fchown() handler.
290SyscallReturn fchownFunc(SyscallDesc *desc, int num,
291 LiveProcess *p, ThreadContext *tc);
292
293/// Target dup() handler.
294SyscallReturn dupFunc(SyscallDesc *desc, int num,
295 LiveProcess *process, ThreadContext *tc);
296
297/// Target fnctl() handler.
298SyscallReturn fcntlFunc(SyscallDesc *desc, int num,
299 LiveProcess *process, ThreadContext *tc);
300
301/// Target fcntl64() handler.
302SyscallReturn fcntl64Func(SyscallDesc *desc, int num,
303 LiveProcess *process, ThreadContext *tc);
304
305/// Target setuid() handler.
306SyscallReturn setuidFunc(SyscallDesc *desc, int num,
307 LiveProcess *p, ThreadContext *tc);
308
309/// Target getpid() handler.
310SyscallReturn getpidFunc(SyscallDesc *desc, int num,
311 LiveProcess *p, ThreadContext *tc);
312
313/// Target getuid() handler.
314SyscallReturn getuidFunc(SyscallDesc *desc, int num,
315 LiveProcess *p, ThreadContext *tc);
316
317/// Target getgid() handler.
318SyscallReturn getgidFunc(SyscallDesc *desc, int num,
319 LiveProcess *p, ThreadContext *tc);
320
321/// Target getppid() handler.
322SyscallReturn getppidFunc(SyscallDesc *desc, int num,
323 LiveProcess *p, ThreadContext *tc);
324
325/// Target geteuid() handler.
326SyscallReturn geteuidFunc(SyscallDesc *desc, int num,
327 LiveProcess *p, ThreadContext *tc);
328
329/// Target getegid() handler.
330SyscallReturn getegidFunc(SyscallDesc *desc, int num,
331 LiveProcess *p, ThreadContext *tc);
332
333/// Target clone() handler.
334SyscallReturn cloneFunc(SyscallDesc *desc, int num,
335 LiveProcess *p, ThreadContext *tc);
336
337
338/// Pseudo Funcs - These functions use a different return convension,
339/// returning a second value in a register other than the normal return register
340SyscallReturn pipePseudoFunc(SyscallDesc *desc, int num,
341 LiveProcess *process, ThreadContext *tc);
342
343/// Target getpidPseudo() handler.
344SyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num,
345 LiveProcess *p, ThreadContext *tc);
346
347/// Target getuidPseudo() handler.
348SyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num,
349 LiveProcess *p, ThreadContext *tc);
350
351/// Target getgidPseudo() handler.
352SyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num,
353 LiveProcess *p, ThreadContext *tc);
354
355
356/// A readable name for 1,000,000, for converting microseconds to seconds.
357const int one_million = 1000000;
358
359/// Approximate seconds since the epoch (1/1/1970). About a billion,
360/// by my reckoning. We want to keep this a constant (not use the
361/// real-world time) to keep simulations repeatable.
362const unsigned seconds_since_epoch = 1000000000;
363
364/// Helper function to convert current elapsed time to seconds and
365/// microseconds.
366template <class T1, class T2>
367void
368getElapsedTime(T1 &sec, T2 &usec)
369{
370 int elapsed_usecs = curTick() / SimClock::Int::us;
371 sec = elapsed_usecs / one_million;
372 usec = elapsed_usecs % one_million;
373}
374
375//////////////////////////////////////////////////////////////////////
376//
377// The following emulation functions are generic, but need to be
378// templated to account for differences in types, constants, etc.
379//
380//////////////////////////////////////////////////////////////////////
381
382#if NO_STAT64
383 typedef struct stat hst_stat;
384 typedef struct stat hst_stat64;
385#else
386 typedef struct stat hst_stat;
387 typedef struct stat64 hst_stat64;
388#endif
389
390//// Helper function to convert a host stat buffer to a target stat
391//// buffer. Also copies the target buffer out to the simulated
392//// memory space. Used by stat(), fstat(), and lstat().
393
394template <typename target_stat, typename host_stat>
395static void
396convertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false)
397{
398 using namespace TheISA;
399
400 if (fakeTTY)
401 tgt->st_dev = 0xA;
402 else
403 tgt->st_dev = host->st_dev;
|
403 tgt->st_dev = TheISA::htog(tgt->st_dev);
| 404 tgt->st_dev = htog(tgt->st_dev);
|
404 tgt->st_ino = host->st_ino;
| 405 tgt->st_ino = host->st_ino;
|
405 tgt->st_ino = TheISA::htog(tgt->st_ino);
| 406 tgt->st_ino = htog(tgt->st_ino);
|
406 tgt->st_mode = host->st_mode;
407 if (fakeTTY) {
408 // Claim to be a character device
409 tgt->st_mode &= ~S_IFMT; // Clear S_IFMT
410 tgt->st_mode |= S_IFCHR; // Set S_IFCHR
411 }
| 407 tgt->st_mode = host->st_mode;
408 if (fakeTTY) {
409 // Claim to be a character device
410 tgt->st_mode &= ~S_IFMT; // Clear S_IFMT
411 tgt->st_mode |= S_IFCHR; // Set S_IFCHR
412 }
|
412 tgt->st_mode = TheISA::htog(tgt->st_mode);
| 413 tgt->st_mode = htog(tgt->st_mode);
|
413 tgt->st_nlink = host->st_nlink;
| 414 tgt->st_nlink = host->st_nlink;
|
414 tgt->st_nlink = TheISA::htog(tgt->st_nlink);
| 415 tgt->st_nlink = htog(tgt->st_nlink);
|
415 tgt->st_uid = host->st_uid;
| 416 tgt->st_uid = host->st_uid;
|
416 tgt->st_uid = TheISA::htog(tgt->st_uid);
| 417 tgt->st_uid = htog(tgt->st_uid);
|
417 tgt->st_gid = host->st_gid;
| 418 tgt->st_gid = host->st_gid;
|
418 tgt->st_gid = TheISA::htog(tgt->st_gid);
| 419 tgt->st_gid = htog(tgt->st_gid);
|
419 if (fakeTTY)
420 tgt->st_rdev = 0x880d;
421 else
422 tgt->st_rdev = host->st_rdev;
| 420 if (fakeTTY)
421 tgt->st_rdev = 0x880d;
422 else
423 tgt->st_rdev = host->st_rdev;
|
423 tgt->st_rdev = TheISA::htog(tgt->st_rdev);
| 424 tgt->st_rdev = htog(tgt->st_rdev);
|
424 tgt->st_size = host->st_size;
| 425 tgt->st_size = host->st_size;
|
425 tgt->st_size = TheISA::htog(tgt->st_size);
| 426 tgt->st_size = htog(tgt->st_size);
|
426 tgt->st_atimeX = host->st_atime;
| 427 tgt->st_atimeX = host->st_atime;
|
427 tgt->st_atimeX = TheISA::htog(tgt->st_atimeX);
| 428 tgt->st_atimeX = htog(tgt->st_atimeX);
|
428 tgt->st_mtimeX = host->st_mtime;
| 429 tgt->st_mtimeX = host->st_mtime;
|
429 tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX);
| 430 tgt->st_mtimeX = htog(tgt->st_mtimeX);
|
430 tgt->st_ctimeX = host->st_ctime;
| 431 tgt->st_ctimeX = host->st_ctime;
|
431 tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX);
| 432 tgt->st_ctimeX = htog(tgt->st_ctimeX);
|
432 // Force the block size to be 8k. This helps to ensure buffered io works
433 // consistently across different hosts.
434 tgt->st_blksize = 0x2000;
| 433 // Force the block size to be 8k. This helps to ensure buffered io works
434 // consistently across different hosts.
435 tgt->st_blksize = 0x2000;
|
435 tgt->st_blksize = TheISA::htog(tgt->st_blksize);
| 436 tgt->st_blksize = htog(tgt->st_blksize);
|
436 tgt->st_blocks = host->st_blocks;
| 437 tgt->st_blocks = host->st_blocks;
|
437 tgt->st_blocks = TheISA::htog(tgt->st_blocks);
| 438 tgt->st_blocks = htog(tgt->st_blocks);
|
438}
439
440// Same for stat64
441
442template <typename target_stat, typename host_stat64>
443static void
444convertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false)
445{
446 using namespace TheISA;
447
448 convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY);
449#if defined(STAT_HAVE_NSEC)
450 tgt->st_atime_nsec = host->st_atime_nsec;
| 439}
440
441// Same for stat64
442
443template <typename target_stat, typename host_stat64>
444static void
445convertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false)
446{
447 using namespace TheISA;
448
449 convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY);
450#if defined(STAT_HAVE_NSEC)
451 tgt->st_atime_nsec = host->st_atime_nsec;
|
451 tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec);
| 452 tgt->st_atime_nsec = htog(tgt->st_atime_nsec);
|
452 tgt->st_mtime_nsec = host->st_mtime_nsec;
| 453 tgt->st_mtime_nsec = host->st_mtime_nsec;
|
453 tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec);
| 454 tgt->st_mtime_nsec = htog(tgt->st_mtime_nsec);
|
454 tgt->st_ctime_nsec = host->st_ctime_nsec;
| 455 tgt->st_ctime_nsec = host->st_ctime_nsec;
|
455 tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec);
| 456 tgt->st_ctime_nsec = htog(tgt->st_ctime_nsec);
|
456#else
457 tgt->st_atime_nsec = 0;
458 tgt->st_mtime_nsec = 0;
459 tgt->st_ctime_nsec = 0;
460#endif
461}
462
463//Here are a couple convenience functions
464template<class OS>
465static void
| 457#else
458 tgt->st_atime_nsec = 0;
459 tgt->st_mtime_nsec = 0;
460 tgt->st_ctime_nsec = 0;
461#endif
462}
463
464//Here are a couple convenience functions
465template<class OS>
466static void
|
466copyOutStatBuf(SETranslatingPortProxy* mem, Addr addr,
| 467copyOutStatBuf(TranslatingPort * mem, Addr addr,
|
467 hst_stat *host, bool fakeTTY = false)
468{
469 typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
470 tgt_stat_buf tgt(addr);
471 convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY);
472 tgt.copyOut(mem);
473}
474
475template<class OS>
476static void
| 468 hst_stat *host, bool fakeTTY = false)
469{
470 typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
471 tgt_stat_buf tgt(addr);
472 convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY);
473 tgt.copyOut(mem);
474}
475
476template<class OS>
477static void
|
477copyOutStat64Buf(SETranslatingPortProxy* mem, Addr addr,
| 478copyOutStat64Buf(TranslatingPort * mem, Addr addr,
|
478 hst_stat64 *host, bool fakeTTY = false)
479{
480 typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
481 tgt_stat_buf tgt(addr);
482 convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY);
483 tgt.copyOut(mem);
484}
485
486/// Target ioctl() handler. For the most part, programs call ioctl()
487/// only to find out if their stdout is a tty, to determine whether to
488/// do line or block buffering.
489template <class OS>
490SyscallReturn
491ioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
492 ThreadContext *tc)
493{
494 int index = 0;
495 int fd = process->getSyscallArg(tc, index);
496 unsigned req = process->getSyscallArg(tc, index);
497
498 DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req);
499
500 if (fd < 0 || process->sim_fd(fd) < 0) {
501 // doesn't map to any simulator fd: not a valid target fd
502 return -EBADF;
503 }
504
505 switch (req) {
506 case OS::TIOCISATTY_:
507 case OS::TIOCGETP_:
508 case OS::TIOCSETP_:
509 case OS::TIOCSETN_:
510 case OS::TIOCSETC_:
511 case OS::TIOCGETC_:
512 case OS::TIOCGETS_:
513 case OS::TIOCGETA_:
514 case OS::TCSETAW_:
515 return -ENOTTY;
516
517 default:
518 fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n",
519 fd, req, tc->pcState());
520 }
521}
522
523/// Target open() handler.
524template <class OS>
525SyscallReturn
526openFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
527 ThreadContext *tc)
528{
529 std::string path;
530
531 int index = 0;
| 479 hst_stat64 *host, bool fakeTTY = false)
480{
481 typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
482 tgt_stat_buf tgt(addr);
483 convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY);
484 tgt.copyOut(mem);
485}
486
487/// Target ioctl() handler. For the most part, programs call ioctl()
488/// only to find out if their stdout is a tty, to determine whether to
489/// do line or block buffering.
490template <class OS>
491SyscallReturn
492ioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
493 ThreadContext *tc)
494{
495 int index = 0;
496 int fd = process->getSyscallArg(tc, index);
497 unsigned req = process->getSyscallArg(tc, index);
498
499 DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req);
500
501 if (fd < 0 || process->sim_fd(fd) < 0) {
502 // doesn't map to any simulator fd: not a valid target fd
503 return -EBADF;
504 }
505
506 switch (req) {
507 case OS::TIOCISATTY_:
508 case OS::TIOCGETP_:
509 case OS::TIOCSETP_:
510 case OS::TIOCSETN_:
511 case OS::TIOCSETC_:
512 case OS::TIOCGETC_:
513 case OS::TIOCGETS_:
514 case OS::TIOCGETA_:
515 case OS::TCSETAW_:
516 return -ENOTTY;
517
518 default:
519 fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n",
520 fd, req, tc->pcState());
521 }
522}
523
524/// Target open() handler.
525template <class OS>
526SyscallReturn
527openFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
528 ThreadContext *tc)
529{
530 std::string path;
531
532 int index = 0;
|
532 if (!tc->getMemProxy()->tryReadString(path,
| 533 if (!tc->getMemPort()->tryReadString(path,
|
533 process->getSyscallArg(tc, index)))
534 return -EFAULT;
535
536 if (path == "/dev/sysdev0") {
537 // This is a memory-mapped high-resolution timer device on Alpha.
538 // We don't support it, so just punt.
539 warn("Ignoring open(%s, ...)\n", path);
540 return -ENOENT;
541 }
542
543 int tgtFlags = process->getSyscallArg(tc, index);
544 int mode = process->getSyscallArg(tc, index);
545 int hostFlags = 0;
546
547 // translate open flags
548 for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) {
549 if (tgtFlags & OS::openFlagTable[i].tgtFlag) {
550 tgtFlags &= ~OS::openFlagTable[i].tgtFlag;
551 hostFlags |= OS::openFlagTable[i].hostFlag;
552 }
553 }
554
555 // any target flags left?
556 if (tgtFlags != 0)
557 warn("Syscall: open: cannot decode flags 0x%x", tgtFlags);
558
559#ifdef __CYGWIN32__
560 hostFlags |= O_BINARY;
561#endif
562
563 // Adjust path for current working directory
564 path = process->fullPath(path);
565
566 DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str());
567
568 int fd;
569 if (!path.compare(0, 6, "/proc/") || !path.compare(0, 8, "/system/") ||
570 !path.compare(0, 10, "/platform/") || !path.compare(0, 5, "/sys/")) {
571 // It's a proc/sys entery and requires special handling
572 fd = OS::openSpecialFile(path, process, tc);
573 return (fd == -1) ? -1 : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
574 } else {
575 // open the file
576 fd = open(path.c_str(), hostFlags, mode);
577 return (fd == -1) ? -errno : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
578 }
579
580}
581
582/// Target sysinfo() handler.
583template <class OS>
584SyscallReturn
585sysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
586 ThreadContext *tc)
587{
588
589 int index = 0;
590 TypedBufferArg<typename OS::tgt_sysinfo>
591 sysinfo(process->getSyscallArg(tc, index));
592
593 sysinfo->uptime=seconds_since_epoch;
594 sysinfo->totalram=process->system->memSize();
595
| 534 process->getSyscallArg(tc, index)))
535 return -EFAULT;
536
537 if (path == "/dev/sysdev0") {
538 // This is a memory-mapped high-resolution timer device on Alpha.
539 // We don't support it, so just punt.
540 warn("Ignoring open(%s, ...)\n", path);
541 return -ENOENT;
542 }
543
544 int tgtFlags = process->getSyscallArg(tc, index);
545 int mode = process->getSyscallArg(tc, index);
546 int hostFlags = 0;
547
548 // translate open flags
549 for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) {
550 if (tgtFlags & OS::openFlagTable[i].tgtFlag) {
551 tgtFlags &= ~OS::openFlagTable[i].tgtFlag;
552 hostFlags |= OS::openFlagTable[i].hostFlag;
553 }
554 }
555
556 // any target flags left?
557 if (tgtFlags != 0)
558 warn("Syscall: open: cannot decode flags 0x%x", tgtFlags);
559
560#ifdef __CYGWIN32__
561 hostFlags |= O_BINARY;
562#endif
563
564 // Adjust path for current working directory
565 path = process->fullPath(path);
566
567 DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str());
568
569 int fd;
570 if (!path.compare(0, 6, "/proc/") || !path.compare(0, 8, "/system/") ||
571 !path.compare(0, 10, "/platform/") || !path.compare(0, 5, "/sys/")) {
572 // It's a proc/sys entery and requires special handling
573 fd = OS::openSpecialFile(path, process, tc);
574 return (fd == -1) ? -1 : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
575 } else {
576 // open the file
577 fd = open(path.c_str(), hostFlags, mode);
578 return (fd == -1) ? -errno : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
579 }
580
581}
582
583/// Target sysinfo() handler.
584template <class OS>
585SyscallReturn
586sysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
587 ThreadContext *tc)
588{
589
590 int index = 0;
591 TypedBufferArg<typename OS::tgt_sysinfo>
592 sysinfo(process->getSyscallArg(tc, index));
593
594 sysinfo->uptime=seconds_since_epoch;
595 sysinfo->totalram=process->system->memSize();
596
|
596 sysinfo.copyOut(tc->getMemProxy());
| 597 sysinfo.copyOut(tc->getMemPort());
|
597
598 return 0;
599}
600
601/// Target chmod() handler.
602template <class OS>
603SyscallReturn
604chmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
605 ThreadContext *tc)
606{
607 std::string path;
608
609 int index = 0;
| 598
599 return 0;
600}
601
602/// Target chmod() handler.
603template <class OS>
604SyscallReturn
605chmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
606 ThreadContext *tc)
607{
608 std::string path;
609
610 int index = 0;
|
610 if (!tc->getMemProxy()->tryReadString(path,
| 611 if (!tc->getMemPort()->tryReadString(path,
|
611 process->getSyscallArg(tc, index))) {
612 return -EFAULT;
613 }
614
615 uint32_t mode = process->getSyscallArg(tc, index);
616 mode_t hostMode = 0;
617
618 // XXX translate mode flags via OS::something???
619 hostMode = mode;
620
621 // Adjust path for current working directory
622 path = process->fullPath(path);
623
624 // do the chmod
625 int result = chmod(path.c_str(), hostMode);
626 if (result < 0)
627 return -errno;
628
629 return 0;
630}
631
632
633/// Target fchmod() handler.
634template <class OS>
635SyscallReturn
636fchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
637 ThreadContext *tc)
638{
639 int index = 0;
640 int fd = process->getSyscallArg(tc, index);
641 if (fd < 0 || process->sim_fd(fd) < 0) {
642 // doesn't map to any simulator fd: not a valid target fd
643 return -EBADF;
644 }
645
646 uint32_t mode = process->getSyscallArg(tc, index);
647 mode_t hostMode = 0;
648
649 // XXX translate mode flags via OS::someting???
650 hostMode = mode;
651
652 // do the fchmod
653 int result = fchmod(process->sim_fd(fd), hostMode);
654 if (result < 0)
655 return -errno;
656
657 return 0;
658}
659
660/// Target mremap() handler.
661template <class OS>
662SyscallReturn
663mremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc)
664{
665 int index = 0;
666 Addr start = process->getSyscallArg(tc, index);
667 uint64_t old_length = process->getSyscallArg(tc, index);
668 uint64_t new_length = process->getSyscallArg(tc, index);
669 uint64_t flags = process->getSyscallArg(tc, index);
670
671 if ((start % TheISA::VMPageSize != 0) ||
672 (new_length % TheISA::VMPageSize != 0)) {
673 warn("mremap failing: arguments not page aligned");
674 return -EINVAL;
675 }
676
677 if (new_length > old_length) {
678 if ((start + old_length) == process->mmap_end) {
679 uint64_t diff = new_length - old_length;
| 612 process->getSyscallArg(tc, index))) {
613 return -EFAULT;
614 }
615
616 uint32_t mode = process->getSyscallArg(tc, index);
617 mode_t hostMode = 0;
618
619 // XXX translate mode flags via OS::something???
620 hostMode = mode;
621
622 // Adjust path for current working directory
623 path = process->fullPath(path);
624
625 // do the chmod
626 int result = chmod(path.c_str(), hostMode);
627 if (result < 0)
628 return -errno;
629
630 return 0;
631}
632
633
634/// Target fchmod() handler.
635template <class OS>
636SyscallReturn
637fchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
638 ThreadContext *tc)
639{
640 int index = 0;
641 int fd = process->getSyscallArg(tc, index);
642 if (fd < 0 || process->sim_fd(fd) < 0) {
643 // doesn't map to any simulator fd: not a valid target fd
644 return -EBADF;
645 }
646
647 uint32_t mode = process->getSyscallArg(tc, index);
648 mode_t hostMode = 0;
649
650 // XXX translate mode flags via OS::someting???
651 hostMode = mode;
652
653 // do the fchmod
654 int result = fchmod(process->sim_fd(fd), hostMode);
655 if (result < 0)
656 return -errno;
657
658 return 0;
659}
660
661/// Target mremap() handler.
662template <class OS>
663SyscallReturn
664mremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc)
665{
666 int index = 0;
667 Addr start = process->getSyscallArg(tc, index);
668 uint64_t old_length = process->getSyscallArg(tc, index);
669 uint64_t new_length = process->getSyscallArg(tc, index);
670 uint64_t flags = process->getSyscallArg(tc, index);
671
672 if ((start % TheISA::VMPageSize != 0) ||
673 (new_length % TheISA::VMPageSize != 0)) {
674 warn("mremap failing: arguments not page aligned");
675 return -EINVAL;
676 }
677
678 if (new_length > old_length) {
679 if ((start + old_length) == process->mmap_end) {
680 uint64_t diff = new_length - old_length;
|
680 process->allocateMem(process->mmap_end, diff);
| 681 process->pTable->allocate(process->mmap_end, diff);
|
681 process->mmap_end += diff;
682 return start;
683 } else {
684 // sys/mman.h defined MREMAP_MAYMOVE
685 if (!(flags & 1)) {
686 warn("can't remap here and MREMAP_MAYMOVE flag not set\n");
687 return -ENOMEM;
688 } else {
689 process->pTable->remap(start, old_length, process->mmap_end);
690 warn("mremapping to totally new vaddr %08p-%08p, adding %d\n",
691 process->mmap_end, process->mmap_end + new_length, new_length);
692 start = process->mmap_end;
693 // add on the remaining unallocated pages
| 682 process->mmap_end += diff;
683 return start;
684 } else {
685 // sys/mman.h defined MREMAP_MAYMOVE
686 if (!(flags & 1)) {
687 warn("can't remap here and MREMAP_MAYMOVE flag not set\n");
688 return -ENOMEM;
689 } else {
690 process->pTable->remap(start, old_length, process->mmap_end);
691 warn("mremapping to totally new vaddr %08p-%08p, adding %d\n",
692 process->mmap_end, process->mmap_end + new_length, new_length);
693 start = process->mmap_end;
694 // add on the remaining unallocated pages
|
694 process->allocateMem(start + old_length,
695 new_length - old_length);
| 695 process->pTable->allocate(start + old_length, new_length - old_length);
|
696 process->mmap_end += new_length;
697 warn("returning %08p as start\n", start);
698 return start;
699 }
700 }
701 } else {
| 696 process->mmap_end += new_length;
697 warn("returning %08p as start\n", start);
698 return start;
699 }
700 }
701 } else {
|
702 process->pTable->unmap(start + new_length, old_length - new_length);
| 702 process->pTable->deallocate(start + new_length, old_length -
703 new_length);
|
703 return start;
704 }
705}
706
707/// Target stat() handler.
708template <class OS>
709SyscallReturn
710statFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
711 ThreadContext *tc)
712{
713 std::string path;
714
715 int index = 0;
| 704 return start;
705 }
706}
707
708/// Target stat() handler.
709template <class OS>
710SyscallReturn
711statFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
712 ThreadContext *tc)
713{
714 std::string path;
715
716 int index = 0;
|
716 if (!tc->getMemProxy()->tryReadString(path,
| 717 if (!tc->getMemPort()->tryReadString(path,
|
717 process->getSyscallArg(tc, index))) {
718 return -EFAULT;
719 }
720 Addr bufPtr = process->getSyscallArg(tc, index);
721
722 // Adjust path for current working directory
723 path = process->fullPath(path);
724
725 struct stat hostBuf;
726 int result = stat(path.c_str(), &hostBuf);
727
728 if (result < 0)
729 return -errno;
730
| 718 process->getSyscallArg(tc, index))) {
719 return -EFAULT;
720 }
721 Addr bufPtr = process->getSyscallArg(tc, index);
722
723 // Adjust path for current working directory
724 path = process->fullPath(path);
725
726 struct stat hostBuf;
727 int result = stat(path.c_str(), &hostBuf);
728
729 if (result < 0)
730 return -errno;
731
|
731 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
| 732 copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
|
732
733 return 0;
734}
735
736
737/// Target stat64() handler.
738template <class OS>
739SyscallReturn
740stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
741 ThreadContext *tc)
742{
743 std::string path;
744
745 int index = 0;
| 733
734 return 0;
735}
736
737
738/// Target stat64() handler.
739template <class OS>
740SyscallReturn
741stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
742 ThreadContext *tc)
743{
744 std::string path;
745
746 int index = 0;
|
746 if (!tc->getMemProxy()->tryReadString(path,
| 747 if (!tc->getMemPort()->tryReadString(path,
|
747 process->getSyscallArg(tc, index)))
748 return -EFAULT;
749 Addr bufPtr = process->getSyscallArg(tc, index);
750
751 // Adjust path for current working directory
752 path = process->fullPath(path);
753
754#if NO_STAT64
755 struct stat hostBuf;
756 int result = stat(path.c_str(), &hostBuf);
757#else
758 struct stat64 hostBuf;
759 int result = stat64(path.c_str(), &hostBuf);
760#endif
761
762 if (result < 0)
763 return -errno;
764
| 748 process->getSyscallArg(tc, index)))
749 return -EFAULT;
750 Addr bufPtr = process->getSyscallArg(tc, index);
751
752 // Adjust path for current working directory
753 path = process->fullPath(path);
754
755#if NO_STAT64
756 struct stat hostBuf;
757 int result = stat(path.c_str(), &hostBuf);
758#else
759 struct stat64 hostBuf;
760 int result = stat64(path.c_str(), &hostBuf);
761#endif
762
763 if (result < 0)
764 return -errno;
765
|
765 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
| 766 copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
|
766
767 return 0;
768}
769
770
771/// Target fstat64() handler.
772template <class OS>
773SyscallReturn
774fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
775 ThreadContext *tc)
776{
777 int index = 0;
778 int fd = process->getSyscallArg(tc, index);
779 Addr bufPtr = process->getSyscallArg(tc, index);
780 if (fd < 0 || process->sim_fd(fd) < 0) {
781 // doesn't map to any simulator fd: not a valid target fd
782 return -EBADF;
783 }
784
785#if NO_STAT64
786 struct stat hostBuf;
787 int result = fstat(process->sim_fd(fd), &hostBuf);
788#else
789 struct stat64 hostBuf;
790 int result = fstat64(process->sim_fd(fd), &hostBuf);
791#endif
792
793 if (result < 0)
794 return -errno;
795
| 767
768 return 0;
769}
770
771
772/// Target fstat64() handler.
773template <class OS>
774SyscallReturn
775fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
776 ThreadContext *tc)
777{
778 int index = 0;
779 int fd = process->getSyscallArg(tc, index);
780 Addr bufPtr = process->getSyscallArg(tc, index);
781 if (fd < 0 || process->sim_fd(fd) < 0) {
782 // doesn't map to any simulator fd: not a valid target fd
783 return -EBADF;
784 }
785
786#if NO_STAT64
787 struct stat hostBuf;
788 int result = fstat(process->sim_fd(fd), &hostBuf);
789#else
790 struct stat64 hostBuf;
791 int result = fstat64(process->sim_fd(fd), &hostBuf);
792#endif
793
794 if (result < 0)
795 return -errno;
796
|
796 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
| 797 copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1));
|
797
798 return 0;
799}
800
801
802/// Target lstat() handler.
803template <class OS>
804SyscallReturn
805lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
806 ThreadContext *tc)
807{
808 std::string path;
809
810 int index = 0;
| 798
799 return 0;
800}
801
802
803/// Target lstat() handler.
804template <class OS>
805SyscallReturn
806lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
807 ThreadContext *tc)
808{
809 std::string path;
810
811 int index = 0;
|
811 if (!tc->getMemProxy()->tryReadString(path,
| 812 if (!tc->getMemPort()->tryReadString(path,
|
812 process->getSyscallArg(tc, index))) {
813 return -EFAULT;
814 }
815 Addr bufPtr = process->getSyscallArg(tc, index);
816
817 // Adjust path for current working directory
818 path = process->fullPath(path);
819
820 struct stat hostBuf;
821 int result = lstat(path.c_str(), &hostBuf);
822
823 if (result < 0)
824 return -errno;
825
| 813 process->getSyscallArg(tc, index))) {
814 return -EFAULT;
815 }
816 Addr bufPtr = process->getSyscallArg(tc, index);
817
818 // Adjust path for current working directory
819 path = process->fullPath(path);
820
821 struct stat hostBuf;
822 int result = lstat(path.c_str(), &hostBuf);
823
824 if (result < 0)
825 return -errno;
826
|
826 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
| 827 copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
|
827
828 return 0;
829}
830
831/// Target lstat64() handler.
832template <class OS>
833SyscallReturn
834lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
835 ThreadContext *tc)
836{
837 std::string path;
838
839 int index = 0;
| 828
829 return 0;
830}
831
832/// Target lstat64() handler.
833template <class OS>
834SyscallReturn
835lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
836 ThreadContext *tc)
837{
838 std::string path;
839
840 int index = 0;
|
840 if (!tc->getMemProxy()->tryReadString(path,
| 841 if (!tc->getMemPort()->tryReadString(path,
|
841 process->getSyscallArg(tc, index))) {
842 return -EFAULT;
843 }
844 Addr bufPtr = process->getSyscallArg(tc, index);
845
846 // Adjust path for current working directory
847 path = process->fullPath(path);
848
849#if NO_STAT64
850 struct stat hostBuf;
851 int result = lstat(path.c_str(), &hostBuf);
852#else
853 struct stat64 hostBuf;
854 int result = lstat64(path.c_str(), &hostBuf);
855#endif
856
857 if (result < 0)
858 return -errno;
859
| 842 process->getSyscallArg(tc, index))) {
843 return -EFAULT;
844 }
845 Addr bufPtr = process->getSyscallArg(tc, index);
846
847 // Adjust path for current working directory
848 path = process->fullPath(path);
849
850#if NO_STAT64
851 struct stat hostBuf;
852 int result = lstat(path.c_str(), &hostBuf);
853#else
854 struct stat64 hostBuf;
855 int result = lstat64(path.c_str(), &hostBuf);
856#endif
857
858 if (result < 0)
859 return -errno;
860
|
860 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
| 861 copyOutStat64Buf<OS>(tc->getMemPort(), bufPtr, &hostBuf);
|
861
862 return 0;
863}
864
865/// Target fstat() handler.
866template <class OS>
867SyscallReturn
868fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
869 ThreadContext *tc)
870{
871 int index = 0;
872 int fd = process->sim_fd(process->getSyscallArg(tc, index));
873 Addr bufPtr = process->getSyscallArg(tc, index);
874
875 DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd);
876
877 if (fd < 0)
878 return -EBADF;
879
880 struct stat hostBuf;
881 int result = fstat(fd, &hostBuf);
882
883 if (result < 0)
884 return -errno;
885
| 862
863 return 0;
864}
865
866/// Target fstat() handler.
867template <class OS>
868SyscallReturn
869fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
870 ThreadContext *tc)
871{
872 int index = 0;
873 int fd = process->sim_fd(process->getSyscallArg(tc, index));
874 Addr bufPtr = process->getSyscallArg(tc, index);
875
876 DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd);
877
878 if (fd < 0)
879 return -EBADF;
880
881 struct stat hostBuf;
882 int result = fstat(fd, &hostBuf);
883
884 if (result < 0)
885 return -errno;
886
|
886 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
| 887 copyOutStatBuf<OS>(tc->getMemPort(), bufPtr, &hostBuf, (fd == 1));
|
887
888 return 0;
889}
890
891
892/// Target statfs() handler.
893template <class OS>
894SyscallReturn
895statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
896 ThreadContext *tc)
897{
898 std::string path;
899
900 int index = 0;
| 888
889 return 0;
890}
891
892
893/// Target statfs() handler.
894template <class OS>
895SyscallReturn
896statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
897 ThreadContext *tc)
898{
899 std::string path;
900
901 int index = 0;
|
901 if (!tc->getMemProxy()->tryReadString(path,
| 902 if (!tc->getMemPort()->tryReadString(path,
|
902 process->getSyscallArg(tc, index))) {
903 return -EFAULT;
904 }
905 Addr bufPtr = process->getSyscallArg(tc, index);
906
907 // Adjust path for current working directory
908 path = process->fullPath(path);
909
910 struct statfs hostBuf;
911 int result = statfs(path.c_str(), &hostBuf);
912
913 if (result < 0)
914 return -errno;
915
| 903 process->getSyscallArg(tc, index))) {
904 return -EFAULT;
905 }
906 Addr bufPtr = process->getSyscallArg(tc, index);
907
908 // Adjust path for current working directory
909 path = process->fullPath(path);
910
911 struct statfs hostBuf;
912 int result = statfs(path.c_str(), &hostBuf);
913
914 if (result < 0)
915 return -errno;
916
|
916 OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
| 917 OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf);
|
917
918 return 0;
919}
920
921
922/// Target fstatfs() handler.
923template <class OS>
924SyscallReturn
925fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
926 ThreadContext *tc)
927{
928 int index = 0;
929 int fd = process->sim_fd(process->getSyscallArg(tc, index));
930 Addr bufPtr = process->getSyscallArg(tc, index);
931
932 if (fd < 0)
933 return -EBADF;
934
935 struct statfs hostBuf;
936 int result = fstatfs(fd, &hostBuf);
937
938 if (result < 0)
939 return -errno;
940
| 918
919 return 0;
920}
921
922
923/// Target fstatfs() handler.
924template <class OS>
925SyscallReturn
926fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
927 ThreadContext *tc)
928{
929 int index = 0;
930 int fd = process->sim_fd(process->getSyscallArg(tc, index));
931 Addr bufPtr = process->getSyscallArg(tc, index);
932
933 if (fd < 0)
934 return -EBADF;
935
936 struct statfs hostBuf;
937 int result = fstatfs(fd, &hostBuf);
938
939 if (result < 0)
940 return -errno;
941
|
941 OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
| 942 OS::copyOutStatfsBuf(tc->getMemPort(), bufPtr, &hostBuf);
|
942
943 return 0;
944}
945
946
947/// Target writev() handler.
948template <class OS>
949SyscallReturn
950writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
951 ThreadContext *tc)
952{
953 int index = 0;
954 int fd = process->getSyscallArg(tc, index);
955 if (fd < 0 || process->sim_fd(fd) < 0) {
956 // doesn't map to any simulator fd: not a valid target fd
957 return -EBADF;
958 }
959
| 943
944 return 0;
945}
946
947
948/// Target writev() handler.
949template <class OS>
950SyscallReturn
951writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
952 ThreadContext *tc)
953{
954 int index = 0;
955 int fd = process->getSyscallArg(tc, index);
956 if (fd < 0 || process->sim_fd(fd) < 0) {
957 // doesn't map to any simulator fd: not a valid target fd
958 return -EBADF;
959 }
960
|
960 SETranslatingPortProxy *p = tc->getMemProxy();
| 961 TranslatingPort *p = tc->getMemPort();
|
961 uint64_t tiov_base = process->getSyscallArg(tc, index);
962 size_t count = process->getSyscallArg(tc, index);
963 struct iovec hiov[count];
964 for (size_t i = 0; i < count; ++i) {
965 typename OS::tgt_iovec tiov;
966
967 p->readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
968 (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec));
| 962 uint64_t tiov_base = process->getSyscallArg(tc, index);
963 size_t count = process->getSyscallArg(tc, index);
964 struct iovec hiov[count];
965 for (size_t i = 0; i < count; ++i) {
966 typename OS::tgt_iovec tiov;
967
968 p->readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
969 (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec));
|
969 hiov[i].iov_len = TheISA::gtoh(tiov.iov_len);
| 970 hiov[i].iov_len = gtoh(tiov.iov_len);
|
970 hiov[i].iov_base = new char [hiov[i].iov_len];
| 971 hiov[i].iov_base = new char [hiov[i].iov_len];
|
971 p->readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
| 972 p->readBlob(gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
|
972 hiov[i].iov_len);
973 }
974
975 int result = writev(process->sim_fd(fd), hiov, count);
976
977 for (size_t i = 0; i < count; ++i)
978 delete [] (char *)hiov[i].iov_base;
979
980 if (result < 0)
981 return -errno;
982
983 return 0;
984}
985
986
987/// Target mmap() handler.
988///
989/// We don't really handle mmap(). If the target is mmaping an
990/// anonymous region or /dev/zero, we can get away with doing basically
991/// nothing (since memory is initialized to zero and the simulator
992/// doesn't really check addresses anyway).
993///
994template <class OS>
995SyscallReturn
996mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
997{
998 int index = 0;
999 Addr start = p->getSyscallArg(tc, index);
1000 uint64_t length = p->getSyscallArg(tc, index);
1001 index++; // int prot = p->getSyscallArg(tc, index);
1002 int flags = p->getSyscallArg(tc, index);
1003 int tgt_fd = p->getSyscallArg(tc, index);
1004 // int offset = p->getSyscallArg(tc, index);
1005
1006 if (!(flags & OS::TGT_MAP_ANONYMOUS)) {
1007 Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd);
1008 if (!fd_map || fd_map->fd < 0) {
1009 warn("mmap failing: target fd %d is not valid\n", tgt_fd);
1010 return -EBADF;
1011 }
1012
1013 if (fd_map->filename != "/dev/zero") {
1014 // This is very likely broken, but leave a warning here
1015 // (rather than panic) in case /dev/zero is known by
1016 // another name on some platform
1017 warn("allowing mmap of file %s; mmap not supported on files"
1018 " other than /dev/zero\n", fd_map->filename);
1019 }
1020 }
1021
1022 if ((start % TheISA::VMPageSize) != 0 ||
1023 (length % TheISA::VMPageSize) != 0) {
1024 warn("mmap failing: arguments not page-aligned: "
1025 "start 0x%x length 0x%x",
1026 start, length);
1027 return -EINVAL;
1028 }
1029
| 973 hiov[i].iov_len);
974 }
975
976 int result = writev(process->sim_fd(fd), hiov, count);
977
978 for (size_t i = 0; i < count; ++i)
979 delete [] (char *)hiov[i].iov_base;
980
981 if (result < 0)
982 return -errno;
983
984 return 0;
985}
986
987
988/// Target mmap() handler.
989///
990/// We don't really handle mmap(). If the target is mmaping an
991/// anonymous region or /dev/zero, we can get away with doing basically
992/// nothing (since memory is initialized to zero and the simulator
993/// doesn't really check addresses anyway).
994///
995template <class OS>
996SyscallReturn
997mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
998{
999 int index = 0;
1000 Addr start = p->getSyscallArg(tc, index);
1001 uint64_t length = p->getSyscallArg(tc, index);
1002 index++; // int prot = p->getSyscallArg(tc, index);
1003 int flags = p->getSyscallArg(tc, index);
1004 int tgt_fd = p->getSyscallArg(tc, index);
1005 // int offset = p->getSyscallArg(tc, index);
1006
1007 if (!(flags & OS::TGT_MAP_ANONYMOUS)) {
1008 Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd);
1009 if (!fd_map || fd_map->fd < 0) {
1010 warn("mmap failing: target fd %d is not valid\n", tgt_fd);
1011 return -EBADF;
1012 }
1013
1014 if (fd_map->filename != "/dev/zero") {
1015 // This is very likely broken, but leave a warning here
1016 // (rather than panic) in case /dev/zero is known by
1017 // another name on some platform
1018 warn("allowing mmap of file %s; mmap not supported on files"
1019 " other than /dev/zero\n", fd_map->filename);
1020 }
1021 }
1022
1023 if ((start % TheISA::VMPageSize) != 0 ||
1024 (length % TheISA::VMPageSize) != 0) {
1025 warn("mmap failing: arguments not page-aligned: "
1026 "start 0x%x length 0x%x",
1027 start, length);
1028 return -EINVAL;
1029 }
1030
|
1030 // are we ok with clobbering existing mappings? only set this to
1031 // true if the user has been warned.
1032 bool clobber = false;
1033
1034 // try to use the caller-provided address if there is one
1035 bool use_provided_address = (start != 0);
1036
1037 if (use_provided_address) {
1038 // check to see if the desired address is already in use
1039 if (!p->pTable->isUnmapped(start, length)) {
1040 // there are existing mappings in the desired range
1041 // whether we clobber them or not depends on whether the caller
1042 // specified MAP_FIXED
1043 if (flags & OS::TGT_MAP_FIXED) {
1044 // MAP_FIXED specified: clobber existing mappings
1045 warn("mmap: MAP_FIXED at 0x%x overwrites existing mappings\n",
1046 start);
1047 clobber = true;
1048 } else {
1049 // MAP_FIXED not specified: ignore suggested start address
1050 warn("mmap: ignoring suggested map address 0x%x\n", start);
1051 use_provided_address = false;
1052 }
1053 }
| 1031 if (start != 0) {
1032 warn("mmap: ignoring suggested map address 0x%x, using 0x%x",
1033 start, p->mmap_end);
|
1054 }
1055
| 1034 }
1035
|
1056 if (!use_provided_address) {
1057 // no address provided, or provided address unusable:
1058 // pick next address from our "mmap region"
1059 if (OS::mmapGrowsDown()) {
1060 start = p->mmap_end - length;
1061 p->mmap_end = start;
1062 } else {
1063 start = p->mmap_end;
1064 p->mmap_end += length;
1065 }
| 1036 // pick next address from our "mmap region"
1037 if (OS::mmapGrowsDown()) {
1038 start = p->mmap_end - length;
1039 p->mmap_end = start;
1040 } else {
1041 start = p->mmap_end;
1042 p->mmap_end += length;
|
1066 }
| 1043 }
|
| 1044 p->pTable->allocate(start, length);
|
1067
| 1045
|
1068 p->allocateMem(start, length, clobber);
1069
| |
1070 return start;
1071}
1072
1073/// Target getrlimit() handler.
1074template <class OS>
1075SyscallReturn
1076getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1077 ThreadContext *tc)
1078{
1079 int index = 0;
1080 unsigned resource = process->getSyscallArg(tc, index);
1081 TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index));
1082
1083 switch (resource) {
1084 case OS::TGT_RLIMIT_STACK:
1085 // max stack size in bytes: make up a number (8MB for now)
1086 rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024;
| 1046 return start;
1047}
1048
1049/// Target getrlimit() handler.
1050template <class OS>
1051SyscallReturn
1052getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1053 ThreadContext *tc)
1054{
1055 int index = 0;
1056 unsigned resource = process->getSyscallArg(tc, index);
1057 TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index));
1058
1059 switch (resource) {
1060 case OS::TGT_RLIMIT_STACK:
1061 // max stack size in bytes: make up a number (8MB for now)
1062 rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024;
|
1087 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1088 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
| 1063 rlp->rlim_cur = htog(rlp->rlim_cur);
1064 rlp->rlim_max = htog(rlp->rlim_max);
|
1089 break;
1090
1091 case OS::TGT_RLIMIT_DATA:
1092 // max data segment size in bytes: make up a number
1093 rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024;
| 1065 break;
1066
1067 case OS::TGT_RLIMIT_DATA:
1068 // max data segment size in bytes: make up a number
1069 rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024;
|
1094 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1095 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
| 1070 rlp->rlim_cur = htog(rlp->rlim_cur);
1071 rlp->rlim_max = htog(rlp->rlim_max);
|
1096 break;
1097
1098 default:
1099 std::cerr << "getrlimitFunc: unimplemented resource " << resource
1100 << std::endl;
1101 abort();
1102 break;
1103 }
1104
| 1072 break;
1073
1074 default:
1075 std::cerr << "getrlimitFunc: unimplemented resource " << resource
1076 << std::endl;
1077 abort();
1078 break;
1079 }
1080
|
1105 rlp.copyOut(tc->getMemProxy());
| 1081 rlp.copyOut(tc->getMemPort());
|
1106 return 0;
1107}
1108
1109/// Target gettimeofday() handler.
1110template <class OS>
1111SyscallReturn
1112gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1113 ThreadContext *tc)
1114{
1115 int index = 0;
1116 TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index));
1117
1118 getElapsedTime(tp->tv_sec, tp->tv_usec);
1119 tp->tv_sec += seconds_since_epoch;
1120 tp->tv_sec = TheISA::htog(tp->tv_sec);
1121 tp->tv_usec = TheISA::htog(tp->tv_usec);
1122
| 1082 return 0;
1083}
1084
1085/// Target gettimeofday() handler.
1086template <class OS>
1087SyscallReturn
1088gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1089 ThreadContext *tc)
1090{
1091 int index = 0;
1092 TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index));
1093
1094 getElapsedTime(tp->tv_sec, tp->tv_usec);
1095 tp->tv_sec += seconds_since_epoch;
1096 tp->tv_sec = TheISA::htog(tp->tv_sec);
1097 tp->tv_usec = TheISA::htog(tp->tv_usec);
1098
|
1123 tp.copyOut(tc->getMemProxy());
| 1099 tp.copyOut(tc->getMemPort());
|
1124
1125 return 0;
1126}
1127
1128
1129/// Target utimes() handler.
1130template <class OS>
1131SyscallReturn
1132utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1133 ThreadContext *tc)
1134{
1135 std::string path;
1136
1137 int index = 0;
| 1100
1101 return 0;
1102}
1103
1104
1105/// Target utimes() handler.
1106template <class OS>
1107SyscallReturn
1108utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1109 ThreadContext *tc)
1110{
1111 std::string path;
1112
1113 int index = 0;
|
1138 if (!tc->getMemProxy()->tryReadString(path,
| 1114 if (!tc->getMemPort()->tryReadString(path,
|
1139 process->getSyscallArg(tc, index))) {
1140 return -EFAULT;
1141 }
1142
1143 TypedBufferArg<typename OS::timeval [2]>
1144 tp(process->getSyscallArg(tc, index));
| 1115 process->getSyscallArg(tc, index))) {
1116 return -EFAULT;
1117 }
1118
1119 TypedBufferArg<typename OS::timeval [2]>
1120 tp(process->getSyscallArg(tc, index));
|
1145 tp.copyIn(tc->getMemProxy());
| 1121 tp.copyIn(tc->getMemPort());
|
1146
1147 struct timeval hostTimeval[2];
1148 for (int i = 0; i < 2; ++i)
1149 {
| 1122
1123 struct timeval hostTimeval[2];
1124 for (int i = 0; i < 2; ++i)
1125 {
|
1150 hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec);
1151 hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec);
| 1126 hostTimeval[i].tv_sec = gtoh((*tp)[i].tv_sec);
1127 hostTimeval[i].tv_usec = gtoh((*tp)[i].tv_usec);
|
1152 }
1153
1154 // Adjust path for current working directory
1155 path = process->fullPath(path);
1156
1157 int result = utimes(path.c_str(), hostTimeval);
1158
1159 if (result < 0)
1160 return -errno;
1161
1162 return 0;
1163}
1164/// Target getrusage() function.
1165template <class OS>
1166SyscallReturn
1167getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1168 ThreadContext *tc)
1169{
1170 int index = 0;
1171 int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN
1172 TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index));
1173
1174 rup->ru_utime.tv_sec = 0;
1175 rup->ru_utime.tv_usec = 0;
1176 rup->ru_stime.tv_sec = 0;
1177 rup->ru_stime.tv_usec = 0;
1178 rup->ru_maxrss = 0;
1179 rup->ru_ixrss = 0;
1180 rup->ru_idrss = 0;
1181 rup->ru_isrss = 0;
1182 rup->ru_minflt = 0;
1183 rup->ru_majflt = 0;
1184 rup->ru_nswap = 0;
1185 rup->ru_inblock = 0;
1186 rup->ru_oublock = 0;
1187 rup->ru_msgsnd = 0;
1188 rup->ru_msgrcv = 0;
1189 rup->ru_nsignals = 0;
1190 rup->ru_nvcsw = 0;
1191 rup->ru_nivcsw = 0;
1192
1193 switch (who) {
1194 case OS::TGT_RUSAGE_SELF:
1195 getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
| 1128 }
1129
1130 // Adjust path for current working directory
1131 path = process->fullPath(path);
1132
1133 int result = utimes(path.c_str(), hostTimeval);
1134
1135 if (result < 0)
1136 return -errno;
1137
1138 return 0;
1139}
1140/// Target getrusage() function.
1141template <class OS>
1142SyscallReturn
1143getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1144 ThreadContext *tc)
1145{
1146 int index = 0;
1147 int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN
1148 TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index));
1149
1150 rup->ru_utime.tv_sec = 0;
1151 rup->ru_utime.tv_usec = 0;
1152 rup->ru_stime.tv_sec = 0;
1153 rup->ru_stime.tv_usec = 0;
1154 rup->ru_maxrss = 0;
1155 rup->ru_ixrss = 0;
1156 rup->ru_idrss = 0;
1157 rup->ru_isrss = 0;
1158 rup->ru_minflt = 0;
1159 rup->ru_majflt = 0;
1160 rup->ru_nswap = 0;
1161 rup->ru_inblock = 0;
1162 rup->ru_oublock = 0;
1163 rup->ru_msgsnd = 0;
1164 rup->ru_msgrcv = 0;
1165 rup->ru_nsignals = 0;
1166 rup->ru_nvcsw = 0;
1167 rup->ru_nivcsw = 0;
1168
1169 switch (who) {
1170 case OS::TGT_RUSAGE_SELF:
1171 getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
|
1196 rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec);
1197 rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec);
| 1172 rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec);
1173 rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec);
|
1198 break;
1199
1200 case OS::TGT_RUSAGE_CHILDREN:
1201 // do nothing. We have no child processes, so they take no time.
1202 break;
1203
1204 default:
1205 // don't really handle THREAD or CHILDREN, but just warn and
1206 // plow ahead
1207 warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
1208 who);
1209 }
1210
| 1174 break;
1175
1176 case OS::TGT_RUSAGE_CHILDREN:
1177 // do nothing. We have no child processes, so they take no time.
1178 break;
1179
1180 default:
1181 // don't really handle THREAD or CHILDREN, but just warn and
1182 // plow ahead
1183 warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
1184 who);
1185 }
1186
|
1211 rup.copyOut(tc->getMemProxy());
| 1187 rup.copyOut(tc->getMemPort());
|
1212
1213 return 0;
1214}
1215
1216/// Target times() function.
1217template <class OS>
1218SyscallReturn
1219timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1220 ThreadContext *tc)
1221{
1222 int index = 0;
1223 TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index));
1224
1225 // Fill in the time structure (in clocks)
1226 int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s;
1227 bufp->tms_utime = clocks;
1228 bufp->tms_stime = 0;
1229 bufp->tms_cutime = 0;
1230 bufp->tms_cstime = 0;
1231
1232 // Convert to host endianness
| 1188
1189 return 0;
1190}
1191
1192/// Target times() function.
1193template <class OS>
1194SyscallReturn
1195timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1196 ThreadContext *tc)
1197{
1198 int index = 0;
1199 TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index));
1200
1201 // Fill in the time structure (in clocks)
1202 int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s;
1203 bufp->tms_utime = clocks;
1204 bufp->tms_stime = 0;
1205 bufp->tms_cutime = 0;
1206 bufp->tms_cstime = 0;
1207
1208 // Convert to host endianness
|
1233 bufp->tms_utime = TheISA::htog(bufp->tms_utime);
| 1209 bufp->tms_utime = htog(bufp->tms_utime);
|
1234
1235 // Write back
| 1210
1211 // Write back
|
1236 bufp.copyOut(tc->getMemProxy());
| 1212 bufp.copyOut(tc->getMemPort());
|
1237
1238 // Return clock ticks since system boot
1239 return clocks;
1240}
1241
1242/// Target time() function.
1243template <class OS>
1244SyscallReturn
1245timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1246 ThreadContext *tc)
1247{
1248 typename OS::time_t sec, usec;
1249 getElapsedTime(sec, usec);
1250 sec += seconds_since_epoch;
1251
1252 int index = 0;
1253 Addr taddr = (Addr)process->getSyscallArg(tc, index);
1254 if(taddr != 0) {
1255 typename OS::time_t t = sec;
| 1213
1214 // Return clock ticks since system boot
1215 return clocks;
1216}
1217
1218/// Target time() function.
1219template <class OS>
1220SyscallReturn
1221timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1222 ThreadContext *tc)
1223{
1224 typename OS::time_t sec, usec;
1225 getElapsedTime(sec, usec);
1226 sec += seconds_since_epoch;
1227
1228 int index = 0;
1229 Addr taddr = (Addr)process->getSyscallArg(tc, index);
1230 if(taddr != 0) {
1231 typename OS::time_t t = sec;
|
1256 t = TheISA::htog(t);
1257 SETranslatingPortProxy *p = tc->getMemProxy();
| 1232 t = htog(t);
1233 TranslatingPort *p = tc->getMemPort();
|
1258 p->writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
1259 }
1260 return sec;
1261}
1262
1263
1264#endif // __SIM_SYSCALL_EMUL_HH__
| 1234 p->writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
1235 }
1236 return sec;
1237}
1238
1239
1240#endif // __SIM_SYSCALL_EMUL_HH__
|