1/*
2 * Copyright (c) 2012-2013, 2015 ARM Limited
3 * Copyright (c) 2015 Advanced Micro Devices, Inc.
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating
9 * to a hardware implementation of the functionality of the software
10 * licensed hereunder. You may use the software subject to the license
11 * terms below provided that you ensure that this notice is replicated
12 * unmodified and in its entirety in all distributions of the software,
13 * modified or unmodified, in source code or in binary form.
14 *
15 * Copyright (c) 2003-2005 The Regents of The University of Michigan
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are
20 * met: redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer;
22 * redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution;
25 * neither the name of the copyright holders nor the names of its
26 * contributors may be used to endorse or promote products derived from
27 * this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Authors: Steve Reinhardt
42 * Kevin Lim
43 */
44
45#ifndef __SIM_SYSCALL_EMUL_HH__
46#define __SIM_SYSCALL_EMUL_HH__
47
48#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \
49 defined(__FreeBSD__) || defined(__CYGWIN__) || \
50 defined(__NetBSD__))
51
52#define NO_STATFS (defined(__APPLE__) || defined(__OpenBSD__) || \
53 defined(__FreeBSD__) || defined(__NetBSD__))
54
55#define NO_FALLOCATE (defined(__APPLE__) || defined(__OpenBSD__) || \
56 defined(__FreeBSD__) || defined(__NetBSD__))
57
58///
59/// @file syscall_emul.hh
60///
61/// This file defines objects used to emulate syscalls from the target
62/// application on the host machine.
63
64#ifdef __CYGWIN32__
65#include <sys/fcntl.h>
66
67#endif
68#include <fcntl.h>
69#include <sys/mman.h>
70#include <sys/stat.h>
71#if (NO_STATFS == 0)
72#include <sys/statfs.h>
73#else
74#include <sys/mount.h>
75#endif
76#include <sys/time.h>
77#include <sys/uio.h>
78#include <unistd.h>
79
80#include <cerrno>
81#include <string>
82
83#include "base/intmath.hh"
84#include "base/loader/object_file.hh"
85#include "base/misc.hh"
86#include "base/trace.hh"
87#include "base/types.hh"
88#include "config/the_isa.hh"
89#include "cpu/base.hh"
90#include "cpu/thread_context.hh"
91#include "mem/page_table.hh"
92#include "sim/emul_driver.hh"
93#include "sim/process.hh"
94#include "sim/syscall_debug_macros.hh"
95#include "sim/syscall_emul_buf.hh"
96#include "sim/syscall_return.hh"
97
98class SyscallDesc;
99
100//////////////////////////////////////////////////////////////////////
101//
102// The following emulation functions are generic enough that they
103// don't need to be recompiled for different emulated OS's. They are
104// defined in sim/syscall_emul.cc.
105//
106//////////////////////////////////////////////////////////////////////
107
108
109/// Handler for unimplemented syscalls that we haven't thought about.
110SyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
| 1/*
2 * Copyright (c) 2012-2013, 2015 ARM Limited
3 * Copyright (c) 2015 Advanced Micro Devices, Inc.
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating
9 * to a hardware implementation of the functionality of the software
10 * licensed hereunder. You may use the software subject to the license
11 * terms below provided that you ensure that this notice is replicated
12 * unmodified and in its entirety in all distributions of the software,
13 * modified or unmodified, in source code or in binary form.
14 *
15 * Copyright (c) 2003-2005 The Regents of The University of Michigan
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are
20 * met: redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer;
22 * redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution;
25 * neither the name of the copyright holders nor the names of its
26 * contributors may be used to endorse or promote products derived from
27 * this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Authors: Steve Reinhardt
42 * Kevin Lim
43 */
44
45#ifndef __SIM_SYSCALL_EMUL_HH__
46#define __SIM_SYSCALL_EMUL_HH__
47
48#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \
49 defined(__FreeBSD__) || defined(__CYGWIN__) || \
50 defined(__NetBSD__))
51
52#define NO_STATFS (defined(__APPLE__) || defined(__OpenBSD__) || \
53 defined(__FreeBSD__) || defined(__NetBSD__))
54
55#define NO_FALLOCATE (defined(__APPLE__) || defined(__OpenBSD__) || \
56 defined(__FreeBSD__) || defined(__NetBSD__))
57
58///
59/// @file syscall_emul.hh
60///
61/// This file defines objects used to emulate syscalls from the target
62/// application on the host machine.
63
64#ifdef __CYGWIN32__
65#include <sys/fcntl.h>
66
67#endif
68#include <fcntl.h>
69#include <sys/mman.h>
70#include <sys/stat.h>
71#if (NO_STATFS == 0)
72#include <sys/statfs.h>
73#else
74#include <sys/mount.h>
75#endif
76#include <sys/time.h>
77#include <sys/uio.h>
78#include <unistd.h>
79
80#include <cerrno>
81#include <string>
82
83#include "base/intmath.hh"
84#include "base/loader/object_file.hh"
85#include "base/misc.hh"
86#include "base/trace.hh"
87#include "base/types.hh"
88#include "config/the_isa.hh"
89#include "cpu/base.hh"
90#include "cpu/thread_context.hh"
91#include "mem/page_table.hh"
92#include "sim/emul_driver.hh"
93#include "sim/process.hh"
94#include "sim/syscall_debug_macros.hh"
95#include "sim/syscall_emul_buf.hh"
96#include "sim/syscall_return.hh"
97
98class SyscallDesc;
99
100//////////////////////////////////////////////////////////////////////
101//
102// The following emulation functions are generic enough that they
103// don't need to be recompiled for different emulated OS's. They are
104// defined in sim/syscall_emul.cc.
105//
106//////////////////////////////////////////////////////////////////////
107
108
109/// Handler for unimplemented syscalls that we haven't thought about.
110SyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
|
111 LiveProcess *p, ThreadContext *tc);
| 111 Process *p, ThreadContext *tc);
|
112
113/// Handler for unimplemented syscalls that we never intend to
114/// implement (signal handling, etc.) and should not affect the correct
115/// behavior of the program. Print a warning only if the appropriate
116/// trace flag is enabled. Return success to the target program.
117SyscallReturn ignoreFunc(SyscallDesc *desc, int num,
| 112
113/// Handler for unimplemented syscalls that we never intend to
114/// implement (signal handling, etc.) and should not affect the correct
115/// behavior of the program. Print a warning only if the appropriate
116/// trace flag is enabled. Return success to the target program.
117SyscallReturn ignoreFunc(SyscallDesc *desc, int num,
|
118 LiveProcess *p, ThreadContext *tc);
| 118 Process *p, ThreadContext *tc);
|
119
120// Target fallocateFunc() handler.
121SyscallReturn fallocateFunc(SyscallDesc *desc, int num,
| 119
120// Target fallocateFunc() handler.
121SyscallReturn fallocateFunc(SyscallDesc *desc, int num,
|
122 LiveProcess *p, ThreadContext *tc);
| 122 Process *p, ThreadContext *tc);
|
123
124/// Target exit() handler: terminate current context.
125SyscallReturn exitFunc(SyscallDesc *desc, int num,
| 123
124/// Target exit() handler: terminate current context.
125SyscallReturn exitFunc(SyscallDesc *desc, int num,
|
126 LiveProcess *p, ThreadContext *tc);
| 126 Process *p, ThreadContext *tc);
|
127
128/// Target exit_group() handler: terminate simulation. (exit all threads)
129SyscallReturn exitGroupFunc(SyscallDesc *desc, int num,
| 127
128/// Target exit_group() handler: terminate simulation. (exit all threads)
129SyscallReturn exitGroupFunc(SyscallDesc *desc, int num,
|
130 LiveProcess *p, ThreadContext *tc);
| 130 Process *p, ThreadContext *tc);
|
131
132/// Target getpagesize() handler.
133SyscallReturn getpagesizeFunc(SyscallDesc *desc, int num,
| 131
132/// Target getpagesize() handler.
133SyscallReturn getpagesizeFunc(SyscallDesc *desc, int num,
|
134 LiveProcess *p, ThreadContext *tc);
| 134 Process *p, ThreadContext *tc);
|
135
136/// Target brk() handler: set brk address.
137SyscallReturn brkFunc(SyscallDesc *desc, int num,
| 135
136/// Target brk() handler: set brk address.
137SyscallReturn brkFunc(SyscallDesc *desc, int num,
|
138 LiveProcess *p, ThreadContext *tc);
| 138 Process *p, ThreadContext *tc);
|
139
140/// Target close() handler.
141SyscallReturn closeFunc(SyscallDesc *desc, int num,
| 139
140/// Target close() handler.
141SyscallReturn closeFunc(SyscallDesc *desc, int num,
|
142 LiveProcess *p, ThreadContext *tc);
| 142 Process *p, ThreadContext *tc);
|
143
144/// Target read() handler.
145SyscallReturn readFunc(SyscallDesc *desc, int num,
| 143
144/// Target read() handler.
145SyscallReturn readFunc(SyscallDesc *desc, int num,
|
146 LiveProcess *p, ThreadContext *tc);
| 146 Process *p, ThreadContext *tc);
|
147
148/// Target write() handler.
149SyscallReturn writeFunc(SyscallDesc *desc, int num,
| 147
148/// Target write() handler.
149SyscallReturn writeFunc(SyscallDesc *desc, int num,
|
150 LiveProcess *p, ThreadContext *tc);
| 150 Process *p, ThreadContext *tc);
|
151
152/// Target lseek() handler.
153SyscallReturn lseekFunc(SyscallDesc *desc, int num,
| 151
152/// Target lseek() handler.
153SyscallReturn lseekFunc(SyscallDesc *desc, int num,
|
154 LiveProcess *p, ThreadContext *tc);
| 154 Process *p, ThreadContext *tc);
|
155
156/// Target _llseek() handler.
157SyscallReturn _llseekFunc(SyscallDesc *desc, int num,
| 155
156/// Target _llseek() handler.
157SyscallReturn _llseekFunc(SyscallDesc *desc, int num,
|
158 LiveProcess *p, ThreadContext *tc);
| 158 Process *p, ThreadContext *tc);
|
159
160/// Target munmap() handler.
161SyscallReturn munmapFunc(SyscallDesc *desc, int num,
| 159
160/// Target munmap() handler.
161SyscallReturn munmapFunc(SyscallDesc *desc, int num,
|
162 LiveProcess *p, ThreadContext *tc);
| 162 Process *p, ThreadContext *tc);
|
163
164/// Target gethostname() handler.
165SyscallReturn gethostnameFunc(SyscallDesc *desc, int num,
| 163
164/// Target gethostname() handler.
165SyscallReturn gethostnameFunc(SyscallDesc *desc, int num,
|
166 LiveProcess *p, ThreadContext *tc);
| 166 Process *p, ThreadContext *tc);
|
167
168/// Target getcwd() handler.
169SyscallReturn getcwdFunc(SyscallDesc *desc, int num,
| 167
168/// Target getcwd() handler.
169SyscallReturn getcwdFunc(SyscallDesc *desc, int num,
|
170 LiveProcess *p, ThreadContext *tc);
| 170 Process *p, ThreadContext *tc);
|
171
172/// Target readlink() handler.
173SyscallReturn readlinkFunc(SyscallDesc *desc, int num,
| 171
172/// Target readlink() handler.
173SyscallReturn readlinkFunc(SyscallDesc *desc, int num,
|
174 LiveProcess *p, ThreadContext *tc,
| 174 Process *p, ThreadContext *tc,
|
175 int index = 0);
176SyscallReturn readlinkFunc(SyscallDesc *desc, int num,
| 175 int index = 0);
176SyscallReturn readlinkFunc(SyscallDesc *desc, int num,
|
177 LiveProcess *p, ThreadContext *tc);
| 177 Process *p, ThreadContext *tc);
|
178
179/// Target unlink() handler.
180SyscallReturn unlinkHelper(SyscallDesc *desc, int num,
| 178
179/// Target unlink() handler.
180SyscallReturn unlinkHelper(SyscallDesc *desc, int num,
|
181 LiveProcess *p, ThreadContext *tc,
| 181 Process *p, ThreadContext *tc,
|
182 int index);
183SyscallReturn unlinkFunc(SyscallDesc *desc, int num,
| 182 int index);
183SyscallReturn unlinkFunc(SyscallDesc *desc, int num,
|
184 LiveProcess *p, ThreadContext *tc);
| 184 Process *p, ThreadContext *tc);
|
185
186/// Target mkdir() handler.
187SyscallReturn mkdirFunc(SyscallDesc *desc, int num,
| 185
186/// Target mkdir() handler.
187SyscallReturn mkdirFunc(SyscallDesc *desc, int num,
|
188 LiveProcess *p, ThreadContext *tc);
| 188 Process *p, ThreadContext *tc);
|
189
190/// Target rename() handler.
191SyscallReturn renameFunc(SyscallDesc *desc, int num,
| 189
190/// Target rename() handler.
191SyscallReturn renameFunc(SyscallDesc *desc, int num,
|
192 LiveProcess *p, ThreadContext *tc);
| 192 Process *p, ThreadContext *tc);
|
193
194
195/// Target truncate() handler.
196SyscallReturn truncateFunc(SyscallDesc *desc, int num,
| 193
194
195/// Target truncate() handler.
196SyscallReturn truncateFunc(SyscallDesc *desc, int num,
|
197 LiveProcess *p, ThreadContext *tc);
| 197 Process *p, ThreadContext *tc);
|
198
199
200/// Target ftruncate() handler.
201SyscallReturn ftruncateFunc(SyscallDesc *desc, int num,
| 198
199
200/// Target ftruncate() handler.
201SyscallReturn ftruncateFunc(SyscallDesc *desc, int num,
|
202 LiveProcess *p, ThreadContext *tc);
| 202 Process *p, ThreadContext *tc);
|
203
204
205/// Target truncate64() handler.
206SyscallReturn truncate64Func(SyscallDesc *desc, int num,
| 203
204
205/// Target truncate64() handler.
206SyscallReturn truncate64Func(SyscallDesc *desc, int num,
|
207 LiveProcess *p, ThreadContext *tc);
| 207 Process *p, ThreadContext *tc);
|
208
209/// Target ftruncate64() handler.
210SyscallReturn ftruncate64Func(SyscallDesc *desc, int num,
| 208
209/// Target ftruncate64() handler.
210SyscallReturn ftruncate64Func(SyscallDesc *desc, int num,
|
211 LiveProcess *p, ThreadContext *tc);
| 211 Process *p, ThreadContext *tc);
|
212
213
214/// Target umask() handler.
215SyscallReturn umaskFunc(SyscallDesc *desc, int num,
| 212
213
214/// Target umask() handler.
215SyscallReturn umaskFunc(SyscallDesc *desc, int num,
|
216 LiveProcess *p, ThreadContext *tc);
| 216 Process *p, ThreadContext *tc);
|
217
218
219/// Target chown() handler.
220SyscallReturn chownFunc(SyscallDesc *desc, int num,
| 217
218
219/// Target chown() handler.
220SyscallReturn chownFunc(SyscallDesc *desc, int num,
|
221 LiveProcess *p, ThreadContext *tc);
| 221 Process *p, ThreadContext *tc);
|
222
223
224/// Target fchown() handler.
225SyscallReturn fchownFunc(SyscallDesc *desc, int num,
| 222
223
224/// Target fchown() handler.
225SyscallReturn fchownFunc(SyscallDesc *desc, int num,
|
226 LiveProcess *p, ThreadContext *tc);
| 226 Process *p, ThreadContext *tc);
|
227
228/// Target dup() handler.
229SyscallReturn dupFunc(SyscallDesc *desc, int num,
| 227
228/// Target dup() handler.
229SyscallReturn dupFunc(SyscallDesc *desc, int num,
|
230 LiveProcess *process, ThreadContext *tc);
| 230 Process *process, ThreadContext *tc);
|
231
232/// Target fnctl() handler.
233SyscallReturn fcntlFunc(SyscallDesc *desc, int num,
| 231
232/// Target fnctl() handler.
233SyscallReturn fcntlFunc(SyscallDesc *desc, int num,
|
234 LiveProcess *process, ThreadContext *tc);
| 234 Process *process, ThreadContext *tc);
|
235
236/// Target fcntl64() handler.
237SyscallReturn fcntl64Func(SyscallDesc *desc, int num,
| 235
236/// Target fcntl64() handler.
237SyscallReturn fcntl64Func(SyscallDesc *desc, int num,
|
238 LiveProcess *process, ThreadContext *tc);
| 238 Process *process, ThreadContext *tc);
|
239
240/// Target setuid() handler.
241SyscallReturn setuidFunc(SyscallDesc *desc, int num,
| 239
240/// Target setuid() handler.
241SyscallReturn setuidFunc(SyscallDesc *desc, int num,
|
242 LiveProcess *p, ThreadContext *tc);
| 242 Process *p, ThreadContext *tc);
|
243
244/// Target getpid() handler.
245SyscallReturn getpidFunc(SyscallDesc *desc, int num,
| 243
244/// Target getpid() handler.
245SyscallReturn getpidFunc(SyscallDesc *desc, int num,
|
246 LiveProcess *p, ThreadContext *tc);
| 246 Process *p, ThreadContext *tc);
|
247
248/// Target getuid() handler.
249SyscallReturn getuidFunc(SyscallDesc *desc, int num,
| 247
248/// Target getuid() handler.
249SyscallReturn getuidFunc(SyscallDesc *desc, int num,
|
250 LiveProcess *p, ThreadContext *tc);
| 250 Process *p, ThreadContext *tc);
|
251
252/// Target getgid() handler.
253SyscallReturn getgidFunc(SyscallDesc *desc, int num,
| 251
252/// Target getgid() handler.
253SyscallReturn getgidFunc(SyscallDesc *desc, int num,
|
254 LiveProcess *p, ThreadContext *tc);
| 254 Process *p, ThreadContext *tc);
|
255
256/// Target getppid() handler.
257SyscallReturn getppidFunc(SyscallDesc *desc, int num,
| 255
256/// Target getppid() handler.
257SyscallReturn getppidFunc(SyscallDesc *desc, int num,
|
258 LiveProcess *p, ThreadContext *tc);
| 258 Process *p, ThreadContext *tc);
|
259
260/// Target geteuid() handler.
261SyscallReturn geteuidFunc(SyscallDesc *desc, int num,
| 259
260/// Target geteuid() handler.
261SyscallReturn geteuidFunc(SyscallDesc *desc, int num,
|
262 LiveProcess *p, ThreadContext *tc);
| 262 Process *p, ThreadContext *tc);
|
263
264/// Target getegid() handler.
265SyscallReturn getegidFunc(SyscallDesc *desc, int num,
| 263
264/// Target getegid() handler.
265SyscallReturn getegidFunc(SyscallDesc *desc, int num,
|
266 LiveProcess *p, ThreadContext *tc);
| 266 Process *p, ThreadContext *tc);
|
267
268/// Target clone() handler.
269SyscallReturn cloneFunc(SyscallDesc *desc, int num,
| 267
268/// Target clone() handler.
269SyscallReturn cloneFunc(SyscallDesc *desc, int num,
|
270 LiveProcess *p, ThreadContext *tc);
| 270 Process *p, ThreadContext *tc);
|
271
272/// Target access() handler
273SyscallReturn accessFunc(SyscallDesc *desc, int num,
| 271
272/// Target access() handler
273SyscallReturn accessFunc(SyscallDesc *desc, int num,
|
274 LiveProcess *p, ThreadContext *tc);
| 274 Process *p, ThreadContext *tc);
|
275SyscallReturn accessFunc(SyscallDesc *desc, int num,
| 275SyscallReturn accessFunc(SyscallDesc *desc, int num,
|
276 LiveProcess *p, ThreadContext *tc,
277 int index);
| 276 Process *p, ThreadContext *tc,
277 int index);
|
278
279/// Futex system call
280/// Implemented by Daniel Sanchez
281/// Used by printf's in multi-threaded apps
282template <class OS>
283SyscallReturn
| 278
279/// Futex system call
280/// Implemented by Daniel Sanchez
281/// Used by printf's in multi-threaded apps
282template <class OS>
283SyscallReturn
|
284futexFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 284futexFunc(SyscallDesc *desc, int callnum, Process *process,
|
285 ThreadContext *tc)
286{
287 int index_uaddr = 0;
288 int index_op = 1;
289 int index_val = 2;
290 int index_timeout = 3;
291
292 uint64_t uaddr = process->getSyscallArg(tc, index_uaddr);
293 int op = process->getSyscallArg(tc, index_op);
294 int val = process->getSyscallArg(tc, index_val);
295 uint64_t timeout = process->getSyscallArg(tc, index_timeout);
296
297 std::map<uint64_t, std::list<ThreadContext *> * >
298 &futex_map = tc->getSystemPtr()->futexMap;
299
300 DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n",
301 uaddr, op, val);
302
303 op &= ~OS::TGT_FUTEX_PRIVATE_FLAG;
304
305 if (op == OS::TGT_FUTEX_WAIT) {
306 if (timeout != 0) {
307 warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;"
308 "we'll wait indefinitely");
309 }
310
311 uint8_t *buf = new uint8_t[sizeof(int)];
312 tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int));
313 int mem_val = *((int *)buf);
314 delete[] buf;
315
316 if (val != mem_val) {
317 DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, "
318 "expected: %d\n", mem_val, val);
319 return -OS::TGT_EWOULDBLOCK;
320 }
321
322 // Queue the thread context
323 std::list<ThreadContext *> * tcWaitList;
324 if (futex_map.count(uaddr)) {
325 tcWaitList = futex_map.find(uaddr)->second;
326 } else {
327 tcWaitList = new std::list<ThreadContext *>();
328 futex_map.insert(std::pair< uint64_t,
329 std::list<ThreadContext *> * >(uaddr, tcWaitList));
330 }
331 tcWaitList->push_back(tc);
332 DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling "
333 "thread context\n");
334 tc->suspend();
335 return 0;
336 } else if (op == OS::TGT_FUTEX_WAKE){
337 int wokenUp = 0;
338 std::list<ThreadContext *> * tcWaitList;
339 if (futex_map.count(uaddr)) {
340 tcWaitList = futex_map.find(uaddr)->second;
341 while (tcWaitList->size() > 0 && wokenUp < val) {
342 tcWaitList->front()->activate();
343 tcWaitList->pop_front();
344 wokenUp++;
345 }
346 if (tcWaitList->empty()) {
347 futex_map.erase(uaddr);
348 delete tcWaitList;
349 }
350 }
351 DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting "
352 "thread contexts\n", wokenUp);
353 return wokenUp;
354 } else {
355 warn("sys_futex: op %d is not implemented, just returning...", op);
356 return 0;
357 }
358
359}
360
361
362/// Pseudo Funcs - These functions use a different return convension,
363/// returning a second value in a register other than the normal return register
364SyscallReturn pipePseudoFunc(SyscallDesc *desc, int num,
| 285 ThreadContext *tc)
286{
287 int index_uaddr = 0;
288 int index_op = 1;
289 int index_val = 2;
290 int index_timeout = 3;
291
292 uint64_t uaddr = process->getSyscallArg(tc, index_uaddr);
293 int op = process->getSyscallArg(tc, index_op);
294 int val = process->getSyscallArg(tc, index_val);
295 uint64_t timeout = process->getSyscallArg(tc, index_timeout);
296
297 std::map<uint64_t, std::list<ThreadContext *> * >
298 &futex_map = tc->getSystemPtr()->futexMap;
299
300 DPRINTF(SyscallVerbose, "In sys_futex: Address=%llx, op=%d, val=%d\n",
301 uaddr, op, val);
302
303 op &= ~OS::TGT_FUTEX_PRIVATE_FLAG;
304
305 if (op == OS::TGT_FUTEX_WAIT) {
306 if (timeout != 0) {
307 warn("sys_futex: FUTEX_WAIT with non-null timeout unimplemented;"
308 "we'll wait indefinitely");
309 }
310
311 uint8_t *buf = new uint8_t[sizeof(int)];
312 tc->getMemProxy().readBlob((Addr)uaddr, buf, (int)sizeof(int));
313 int mem_val = *((int *)buf);
314 delete[] buf;
315
316 if (val != mem_val) {
317 DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, read: %d, "
318 "expected: %d\n", mem_val, val);
319 return -OS::TGT_EWOULDBLOCK;
320 }
321
322 // Queue the thread context
323 std::list<ThreadContext *> * tcWaitList;
324 if (futex_map.count(uaddr)) {
325 tcWaitList = futex_map.find(uaddr)->second;
326 } else {
327 tcWaitList = new std::list<ThreadContext *>();
328 futex_map.insert(std::pair< uint64_t,
329 std::list<ThreadContext *> * >(uaddr, tcWaitList));
330 }
331 tcWaitList->push_back(tc);
332 DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAIT, suspending calling "
333 "thread context\n");
334 tc->suspend();
335 return 0;
336 } else if (op == OS::TGT_FUTEX_WAKE){
337 int wokenUp = 0;
338 std::list<ThreadContext *> * tcWaitList;
339 if (futex_map.count(uaddr)) {
340 tcWaitList = futex_map.find(uaddr)->second;
341 while (tcWaitList->size() > 0 && wokenUp < val) {
342 tcWaitList->front()->activate();
343 tcWaitList->pop_front();
344 wokenUp++;
345 }
346 if (tcWaitList->empty()) {
347 futex_map.erase(uaddr);
348 delete tcWaitList;
349 }
350 }
351 DPRINTF(SyscallVerbose, "sys_futex: FUTEX_WAKE, activated %d waiting "
352 "thread contexts\n", wokenUp);
353 return wokenUp;
354 } else {
355 warn("sys_futex: op %d is not implemented, just returning...", op);
356 return 0;
357 }
358
359}
360
361
362/// Pseudo Funcs - These functions use a different return convension,
363/// returning a second value in a register other than the normal return register
364SyscallReturn pipePseudoFunc(SyscallDesc *desc, int num,
|
365 LiveProcess *process, ThreadContext *tc);
| 365 Process *process, ThreadContext *tc);
|
366
367/// Target getpidPseudo() handler.
368SyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num,
| 366
367/// Target getpidPseudo() handler.
368SyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num,
|
369 LiveProcess *p, ThreadContext *tc);
| 369 Process *p, ThreadContext *tc);
|
370
371/// Target getuidPseudo() handler.
372SyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num,
| 370
371/// Target getuidPseudo() handler.
372SyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num,
|
373 LiveProcess *p, ThreadContext *tc);
| 373 Process *p, ThreadContext *tc);
|
374
375/// Target getgidPseudo() handler.
376SyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num,
| 374
375/// Target getgidPseudo() handler.
376SyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num,
|
377 LiveProcess *p, ThreadContext *tc);
| 377 Process *p, ThreadContext *tc);
|
378
379
380/// A readable name for 1,000,000, for converting microseconds to seconds.
381const int one_million = 1000000;
382/// A readable name for 1,000,000,000, for converting nanoseconds to seconds.
383const int one_billion = 1000000000;
384
385/// Approximate seconds since the epoch (1/1/1970). About a billion,
386/// by my reckoning. We want to keep this a constant (not use the
387/// real-world time) to keep simulations repeatable.
388const unsigned seconds_since_epoch = 1000000000;
389
390/// Helper function to convert current elapsed time to seconds and
391/// microseconds.
392template <class T1, class T2>
393void
394getElapsedTimeMicro(T1 &sec, T2 &usec)
395{
396 uint64_t elapsed_usecs = curTick() / SimClock::Int::us;
397 sec = elapsed_usecs / one_million;
398 usec = elapsed_usecs % one_million;
399}
400
401/// Helper function to convert current elapsed time to seconds and
402/// nanoseconds.
403template <class T1, class T2>
404void
405getElapsedTimeNano(T1 &sec, T2 &nsec)
406{
407 uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns;
408 sec = elapsed_nsecs / one_billion;
409 nsec = elapsed_nsecs % one_billion;
410}
411
412//////////////////////////////////////////////////////////////////////
413//
414// The following emulation functions are generic, but need to be
415// templated to account for differences in types, constants, etc.
416//
417//////////////////////////////////////////////////////////////////////
418
419 typedef struct statfs hst_statfs;
420#if NO_STAT64
421 typedef struct stat hst_stat;
422 typedef struct stat hst_stat64;
423#else
424 typedef struct stat hst_stat;
425 typedef struct stat64 hst_stat64;
426#endif
427
428//// Helper function to convert a host stat buffer to a target stat
429//// buffer. Also copies the target buffer out to the simulated
430//// memory space. Used by stat(), fstat(), and lstat().
431
432template <typename target_stat, typename host_stat>
433static void
434convertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false)
435{
436 using namespace TheISA;
437
438 if (fakeTTY)
439 tgt->st_dev = 0xA;
440 else
441 tgt->st_dev = host->st_dev;
442 tgt->st_dev = TheISA::htog(tgt->st_dev);
443 tgt->st_ino = host->st_ino;
444 tgt->st_ino = TheISA::htog(tgt->st_ino);
445 tgt->st_mode = host->st_mode;
446 if (fakeTTY) {
447 // Claim to be a character device
448 tgt->st_mode &= ~S_IFMT; // Clear S_IFMT
449 tgt->st_mode |= S_IFCHR; // Set S_IFCHR
450 }
451 tgt->st_mode = TheISA::htog(tgt->st_mode);
452 tgt->st_nlink = host->st_nlink;
453 tgt->st_nlink = TheISA::htog(tgt->st_nlink);
454 tgt->st_uid = host->st_uid;
455 tgt->st_uid = TheISA::htog(tgt->st_uid);
456 tgt->st_gid = host->st_gid;
457 tgt->st_gid = TheISA::htog(tgt->st_gid);
458 if (fakeTTY)
459 tgt->st_rdev = 0x880d;
460 else
461 tgt->st_rdev = host->st_rdev;
462 tgt->st_rdev = TheISA::htog(tgt->st_rdev);
463 tgt->st_size = host->st_size;
464 tgt->st_size = TheISA::htog(tgt->st_size);
465 tgt->st_atimeX = host->st_atime;
466 tgt->st_atimeX = TheISA::htog(tgt->st_atimeX);
467 tgt->st_mtimeX = host->st_mtime;
468 tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX);
469 tgt->st_ctimeX = host->st_ctime;
470 tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX);
471 // Force the block size to be 8k. This helps to ensure buffered io works
472 // consistently across different hosts.
473 tgt->st_blksize = 0x2000;
474 tgt->st_blksize = TheISA::htog(tgt->st_blksize);
475 tgt->st_blocks = host->st_blocks;
476 tgt->st_blocks = TheISA::htog(tgt->st_blocks);
477}
478
479// Same for stat64
480
481template <typename target_stat, typename host_stat64>
482static void
483convertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false)
484{
485 using namespace TheISA;
486
487 convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY);
488#if defined(STAT_HAVE_NSEC)
489 tgt->st_atime_nsec = host->st_atime_nsec;
490 tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec);
491 tgt->st_mtime_nsec = host->st_mtime_nsec;
492 tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec);
493 tgt->st_ctime_nsec = host->st_ctime_nsec;
494 tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec);
495#else
496 tgt->st_atime_nsec = 0;
497 tgt->st_mtime_nsec = 0;
498 tgt->st_ctime_nsec = 0;
499#endif
500}
501
502//Here are a couple convenience functions
503template<class OS>
504static void
505copyOutStatBuf(SETranslatingPortProxy &mem, Addr addr,
506 hst_stat *host, bool fakeTTY = false)
507{
508 typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
509 tgt_stat_buf tgt(addr);
510 convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY);
511 tgt.copyOut(mem);
512}
513
514template<class OS>
515static void
516copyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr,
517 hst_stat64 *host, bool fakeTTY = false)
518{
519 typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
520 tgt_stat_buf tgt(addr);
521 convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY);
522 tgt.copyOut(mem);
523}
524
525template <class OS>
526static void
527copyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr,
528 hst_statfs *host)
529{
530 TypedBufferArg<typename OS::tgt_statfs> tgt(addr);
531
532 tgt->f_type = TheISA::htog(host->f_type);
533#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
534 tgt->f_bsize = TheISA::htog(host->f_iosize);
535#else
536 tgt->f_bsize = TheISA::htog(host->f_bsize);
537#endif
538 tgt->f_blocks = TheISA::htog(host->f_blocks);
539 tgt->f_bfree = TheISA::htog(host->f_bfree);
540 tgt->f_bavail = TheISA::htog(host->f_bavail);
541 tgt->f_files = TheISA::htog(host->f_files);
542 tgt->f_ffree = TheISA::htog(host->f_ffree);
543 memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid));
544#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
545 tgt->f_namelen = TheISA::htog(host->f_namemax);
546 tgt->f_frsize = TheISA::htog(host->f_bsize);
547#elif defined(__APPLE__)
548 tgt->f_namelen = 0;
549 tgt->f_frsize = 0;
550#else
551 tgt->f_namelen = TheISA::htog(host->f_namelen);
552 tgt->f_frsize = TheISA::htog(host->f_frsize);
553#endif
554#if defined(__linux__)
555 memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare));
556#else
557 /*
558 * The fields are different sizes per OS. Don't bother with
559 * f_spare or f_reserved on non-Linux for now.
560 */
561 memset(&tgt->f_spare, 0, sizeof(tgt->f_spare));
562#endif
563
564 tgt.copyOut(mem);
565}
566
567/// Target ioctl() handler. For the most part, programs call ioctl()
568/// only to find out if their stdout is a tty, to determine whether to
569/// do line or block buffering. We always claim that output fds are
570/// not TTYs to provide repeatable results.
571template <class OS>
572SyscallReturn
| 378
379
380/// A readable name for 1,000,000, for converting microseconds to seconds.
381const int one_million = 1000000;
382/// A readable name for 1,000,000,000, for converting nanoseconds to seconds.
383const int one_billion = 1000000000;
384
385/// Approximate seconds since the epoch (1/1/1970). About a billion,
386/// by my reckoning. We want to keep this a constant (not use the
387/// real-world time) to keep simulations repeatable.
388const unsigned seconds_since_epoch = 1000000000;
389
390/// Helper function to convert current elapsed time to seconds and
391/// microseconds.
392template <class T1, class T2>
393void
394getElapsedTimeMicro(T1 &sec, T2 &usec)
395{
396 uint64_t elapsed_usecs = curTick() / SimClock::Int::us;
397 sec = elapsed_usecs / one_million;
398 usec = elapsed_usecs % one_million;
399}
400
401/// Helper function to convert current elapsed time to seconds and
402/// nanoseconds.
403template <class T1, class T2>
404void
405getElapsedTimeNano(T1 &sec, T2 &nsec)
406{
407 uint64_t elapsed_nsecs = curTick() / SimClock::Int::ns;
408 sec = elapsed_nsecs / one_billion;
409 nsec = elapsed_nsecs % one_billion;
410}
411
412//////////////////////////////////////////////////////////////////////
413//
414// The following emulation functions are generic, but need to be
415// templated to account for differences in types, constants, etc.
416//
417//////////////////////////////////////////////////////////////////////
418
419 typedef struct statfs hst_statfs;
420#if NO_STAT64
421 typedef struct stat hst_stat;
422 typedef struct stat hst_stat64;
423#else
424 typedef struct stat hst_stat;
425 typedef struct stat64 hst_stat64;
426#endif
427
428//// Helper function to convert a host stat buffer to a target stat
429//// buffer. Also copies the target buffer out to the simulated
430//// memory space. Used by stat(), fstat(), and lstat().
431
432template <typename target_stat, typename host_stat>
433static void
434convertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false)
435{
436 using namespace TheISA;
437
438 if (fakeTTY)
439 tgt->st_dev = 0xA;
440 else
441 tgt->st_dev = host->st_dev;
442 tgt->st_dev = TheISA::htog(tgt->st_dev);
443 tgt->st_ino = host->st_ino;
444 tgt->st_ino = TheISA::htog(tgt->st_ino);
445 tgt->st_mode = host->st_mode;
446 if (fakeTTY) {
447 // Claim to be a character device
448 tgt->st_mode &= ~S_IFMT; // Clear S_IFMT
449 tgt->st_mode |= S_IFCHR; // Set S_IFCHR
450 }
451 tgt->st_mode = TheISA::htog(tgt->st_mode);
452 tgt->st_nlink = host->st_nlink;
453 tgt->st_nlink = TheISA::htog(tgt->st_nlink);
454 tgt->st_uid = host->st_uid;
455 tgt->st_uid = TheISA::htog(tgt->st_uid);
456 tgt->st_gid = host->st_gid;
457 tgt->st_gid = TheISA::htog(tgt->st_gid);
458 if (fakeTTY)
459 tgt->st_rdev = 0x880d;
460 else
461 tgt->st_rdev = host->st_rdev;
462 tgt->st_rdev = TheISA::htog(tgt->st_rdev);
463 tgt->st_size = host->st_size;
464 tgt->st_size = TheISA::htog(tgt->st_size);
465 tgt->st_atimeX = host->st_atime;
466 tgt->st_atimeX = TheISA::htog(tgt->st_atimeX);
467 tgt->st_mtimeX = host->st_mtime;
468 tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX);
469 tgt->st_ctimeX = host->st_ctime;
470 tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX);
471 // Force the block size to be 8k. This helps to ensure buffered io works
472 // consistently across different hosts.
473 tgt->st_blksize = 0x2000;
474 tgt->st_blksize = TheISA::htog(tgt->st_blksize);
475 tgt->st_blocks = host->st_blocks;
476 tgt->st_blocks = TheISA::htog(tgt->st_blocks);
477}
478
479// Same for stat64
480
481template <typename target_stat, typename host_stat64>
482static void
483convertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false)
484{
485 using namespace TheISA;
486
487 convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY);
488#if defined(STAT_HAVE_NSEC)
489 tgt->st_atime_nsec = host->st_atime_nsec;
490 tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec);
491 tgt->st_mtime_nsec = host->st_mtime_nsec;
492 tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec);
493 tgt->st_ctime_nsec = host->st_ctime_nsec;
494 tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec);
495#else
496 tgt->st_atime_nsec = 0;
497 tgt->st_mtime_nsec = 0;
498 tgt->st_ctime_nsec = 0;
499#endif
500}
501
502//Here are a couple convenience functions
503template<class OS>
504static void
505copyOutStatBuf(SETranslatingPortProxy &mem, Addr addr,
506 hst_stat *host, bool fakeTTY = false)
507{
508 typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
509 tgt_stat_buf tgt(addr);
510 convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY);
511 tgt.copyOut(mem);
512}
513
514template<class OS>
515static void
516copyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr,
517 hst_stat64 *host, bool fakeTTY = false)
518{
519 typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
520 tgt_stat_buf tgt(addr);
521 convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY);
522 tgt.copyOut(mem);
523}
524
525template <class OS>
526static void
527copyOutStatfsBuf(SETranslatingPortProxy &mem, Addr addr,
528 hst_statfs *host)
529{
530 TypedBufferArg<typename OS::tgt_statfs> tgt(addr);
531
532 tgt->f_type = TheISA::htog(host->f_type);
533#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
534 tgt->f_bsize = TheISA::htog(host->f_iosize);
535#else
536 tgt->f_bsize = TheISA::htog(host->f_bsize);
537#endif
538 tgt->f_blocks = TheISA::htog(host->f_blocks);
539 tgt->f_bfree = TheISA::htog(host->f_bfree);
540 tgt->f_bavail = TheISA::htog(host->f_bavail);
541 tgt->f_files = TheISA::htog(host->f_files);
542 tgt->f_ffree = TheISA::htog(host->f_ffree);
543 memcpy(&tgt->f_fsid, &host->f_fsid, sizeof(host->f_fsid));
544#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
545 tgt->f_namelen = TheISA::htog(host->f_namemax);
546 tgt->f_frsize = TheISA::htog(host->f_bsize);
547#elif defined(__APPLE__)
548 tgt->f_namelen = 0;
549 tgt->f_frsize = 0;
550#else
551 tgt->f_namelen = TheISA::htog(host->f_namelen);
552 tgt->f_frsize = TheISA::htog(host->f_frsize);
553#endif
554#if defined(__linux__)
555 memcpy(&tgt->f_spare, &host->f_spare, sizeof(host->f_spare));
556#else
557 /*
558 * The fields are different sizes per OS. Don't bother with
559 * f_spare or f_reserved on non-Linux for now.
560 */
561 memset(&tgt->f_spare, 0, sizeof(tgt->f_spare));
562#endif
563
564 tgt.copyOut(mem);
565}
566
567/// Target ioctl() handler. For the most part, programs call ioctl()
568/// only to find out if their stdout is a tty, to determine whether to
569/// do line or block buffering. We always claim that output fds are
570/// not TTYs to provide repeatable results.
571template <class OS>
572SyscallReturn
|
573ioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 573ioctlFunc(SyscallDesc *desc, int callnum, Process *process,
|
574 ThreadContext *tc)
575{
576 int index = 0;
577 int tgt_fd = process->getSyscallArg(tc, index);
578 unsigned req = process->getSyscallArg(tc, index);
579
580 DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req);
581
582 FDEntry *fde = process->getFDEntry(tgt_fd);
583
584 if (fde == NULL) {
585 // doesn't map to any simulator fd: not a valid target fd
586 return -EBADF;
587 }
588
589 if (fde->driver != NULL) {
590 return fde->driver->ioctl(process, tc, req);
591 }
592
593 if (OS::isTtyReq(req)) {
594 return -ENOTTY;
595 }
596
597 warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n",
598 tgt_fd, req, tc->pcState());
599 return -ENOTTY;
600}
601
602template <class OS>
603static SyscallReturn
| 574 ThreadContext *tc)
575{
576 int index = 0;
577 int tgt_fd = process->getSyscallArg(tc, index);
578 unsigned req = process->getSyscallArg(tc, index);
579
580 DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", tgt_fd, req);
581
582 FDEntry *fde = process->getFDEntry(tgt_fd);
583
584 if (fde == NULL) {
585 // doesn't map to any simulator fd: not a valid target fd
586 return -EBADF;
587 }
588
589 if (fde->driver != NULL) {
590 return fde->driver->ioctl(process, tc, req);
591 }
592
593 if (OS::isTtyReq(req)) {
594 return -ENOTTY;
595 }
596
597 warn("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n",
598 tgt_fd, req, tc->pcState());
599 return -ENOTTY;
600}
601
602template <class OS>
603static SyscallReturn
|
604openFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 604openFunc(SyscallDesc *desc, int callnum, Process *process,
|
605 ThreadContext *tc, int index)
606{
607 std::string path;
608
609 if (!tc->getMemProxy().tryReadString(path,
610 process->getSyscallArg(tc, index)))
611 return -EFAULT;
612
613 int tgtFlags = process->getSyscallArg(tc, index);
614 int mode = process->getSyscallArg(tc, index);
615 int hostFlags = 0;
616
617 // translate open flags
618 for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) {
619 if (tgtFlags & OS::openFlagTable[i].tgtFlag) {
620 tgtFlags &= ~OS::openFlagTable[i].tgtFlag;
621 hostFlags |= OS::openFlagTable[i].hostFlag;
622 }
623 }
624
625 // any target flags left?
626 if (tgtFlags != 0)
627 warn("Syscall: open: cannot decode flags 0x%x", tgtFlags);
628
629#ifdef __CYGWIN32__
630 hostFlags |= O_BINARY;
631#endif
632
633 // Adjust path for current working directory
634 path = process->fullPath(path);
635
636 DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str());
637
638 if (startswith(path, "/dev/")) {
639 std::string filename = path.substr(strlen("/dev/"));
640 if (filename == "sysdev0") {
641 // This is a memory-mapped high-resolution timer device on Alpha.
642 // We don't support it, so just punt.
643 warn("Ignoring open(%s, ...)\n", path);
644 return -ENOENT;
645 }
646
647 EmulatedDriver *drv = process->findDriver(filename);
648 if (drv != NULL) {
649 // the driver's open method will allocate a fd from the
650 // process if necessary.
651 return drv->open(process, tc, mode, hostFlags);
652 }
653
654 // fall through here for pass through to host devices, such as
655 // /dev/zero
656 }
657
658 int fd;
659 int local_errno;
660 if (startswith(path, "/proc/") || startswith(path, "/system/") ||
661 startswith(path, "/platform/") || startswith(path, "/sys/")) {
662 // It's a proc/sys entry and requires special handling
663 fd = OS::openSpecialFile(path, process, tc);
664 local_errno = ENOENT;
665 } else {
666 // open the file
667 fd = open(path.c_str(), hostFlags, mode);
668 local_errno = errno;
669 }
670
671 if (fd == -1)
672 return -local_errno;
673
674 return process->allocFD(fd, path.c_str(), hostFlags, mode, false);
675}
676
677/// Target open() handler.
678template <class OS>
679SyscallReturn
| 605 ThreadContext *tc, int index)
606{
607 std::string path;
608
609 if (!tc->getMemProxy().tryReadString(path,
610 process->getSyscallArg(tc, index)))
611 return -EFAULT;
612
613 int tgtFlags = process->getSyscallArg(tc, index);
614 int mode = process->getSyscallArg(tc, index);
615 int hostFlags = 0;
616
617 // translate open flags
618 for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) {
619 if (tgtFlags & OS::openFlagTable[i].tgtFlag) {
620 tgtFlags &= ~OS::openFlagTable[i].tgtFlag;
621 hostFlags |= OS::openFlagTable[i].hostFlag;
622 }
623 }
624
625 // any target flags left?
626 if (tgtFlags != 0)
627 warn("Syscall: open: cannot decode flags 0x%x", tgtFlags);
628
629#ifdef __CYGWIN32__
630 hostFlags |= O_BINARY;
631#endif
632
633 // Adjust path for current working directory
634 path = process->fullPath(path);
635
636 DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str());
637
638 if (startswith(path, "/dev/")) {
639 std::string filename = path.substr(strlen("/dev/"));
640 if (filename == "sysdev0") {
641 // This is a memory-mapped high-resolution timer device on Alpha.
642 // We don't support it, so just punt.
643 warn("Ignoring open(%s, ...)\n", path);
644 return -ENOENT;
645 }
646
647 EmulatedDriver *drv = process->findDriver(filename);
648 if (drv != NULL) {
649 // the driver's open method will allocate a fd from the
650 // process if necessary.
651 return drv->open(process, tc, mode, hostFlags);
652 }
653
654 // fall through here for pass through to host devices, such as
655 // /dev/zero
656 }
657
658 int fd;
659 int local_errno;
660 if (startswith(path, "/proc/") || startswith(path, "/system/") ||
661 startswith(path, "/platform/") || startswith(path, "/sys/")) {
662 // It's a proc/sys entry and requires special handling
663 fd = OS::openSpecialFile(path, process, tc);
664 local_errno = ENOENT;
665 } else {
666 // open the file
667 fd = open(path.c_str(), hostFlags, mode);
668 local_errno = errno;
669 }
670
671 if (fd == -1)
672 return -local_errno;
673
674 return process->allocFD(fd, path.c_str(), hostFlags, mode, false);
675}
676
677/// Target open() handler.
678template <class OS>
679SyscallReturn
|
680openFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 680openFunc(SyscallDesc *desc, int callnum, Process *process,
|
681 ThreadContext *tc)
682{
683 return openFunc<OS>(desc, callnum, process, tc, 0);
684}
685
686/// Target openat() handler.
687template <class OS>
688SyscallReturn
| 681 ThreadContext *tc)
682{
683 return openFunc<OS>(desc, callnum, process, tc, 0);
684}
685
686/// Target openat() handler.
687template <class OS>
688SyscallReturn
|
689openatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
690 ThreadContext *tc)
| 689openatFunc(SyscallDesc *desc, int callnum, Process *process,
690 ThreadContext *tc)
|
691{
692 int index = 0;
693 int dirfd = process->getSyscallArg(tc, index);
694 if (dirfd != OS::TGT_AT_FDCWD)
695 warn("openat: first argument not AT_FDCWD; unlikely to work");
696 return openFunc<OS>(desc, callnum, process, tc, 1);
697}
698
699/// Target unlinkat() handler.
700template <class OS>
701SyscallReturn
| 691{
692 int index = 0;
693 int dirfd = process->getSyscallArg(tc, index);
694 if (dirfd != OS::TGT_AT_FDCWD)
695 warn("openat: first argument not AT_FDCWD; unlikely to work");
696 return openFunc<OS>(desc, callnum, process, tc, 1);
697}
698
699/// Target unlinkat() handler.
700template <class OS>
701SyscallReturn
|
702unlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 702unlinkatFunc(SyscallDesc *desc, int callnum, Process *process,
|
703 ThreadContext *tc)
704{
705 int index = 0;
706 int dirfd = process->getSyscallArg(tc, index);
707 if (dirfd != OS::TGT_AT_FDCWD)
708 warn("unlinkat: first argument not AT_FDCWD; unlikely to work");
709
710 return unlinkHelper(desc, callnum, process, tc, 1);
711}
712
713/// Target facessat() handler
714template <class OS>
715SyscallReturn
| 703 ThreadContext *tc)
704{
705 int index = 0;
706 int dirfd = process->getSyscallArg(tc, index);
707 if (dirfd != OS::TGT_AT_FDCWD)
708 warn("unlinkat: first argument not AT_FDCWD; unlikely to work");
709
710 return unlinkHelper(desc, callnum, process, tc, 1);
711}
712
713/// Target facessat() handler
714template <class OS>
715SyscallReturn
|
716faccessatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
717 ThreadContext *tc)
| 716faccessatFunc(SyscallDesc *desc, int callnum, Process *process,
717 ThreadContext *tc)
|
718{
719 int index = 0;
720 int dirfd = process->getSyscallArg(tc, index);
721 if (dirfd != OS::TGT_AT_FDCWD)
722 warn("faccessat: first argument not AT_FDCWD; unlikely to work");
723 return accessFunc(desc, callnum, process, tc, 1);
724}
725
726/// Target readlinkat() handler
727template <class OS>
728SyscallReturn
| 718{
719 int index = 0;
720 int dirfd = process->getSyscallArg(tc, index);
721 if (dirfd != OS::TGT_AT_FDCWD)
722 warn("faccessat: first argument not AT_FDCWD; unlikely to work");
723 return accessFunc(desc, callnum, process, tc, 1);
724}
725
726/// Target readlinkat() handler
727template <class OS>
728SyscallReturn
|
729readlinkatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
730 ThreadContext *tc)
| 729readlinkatFunc(SyscallDesc *desc, int callnum, Process *process,
730 ThreadContext *tc)
|
731{
732 int index = 0;
733 int dirfd = process->getSyscallArg(tc, index);
734 if (dirfd != OS::TGT_AT_FDCWD)
735 warn("openat: first argument not AT_FDCWD; unlikely to work");
736 return readlinkFunc(desc, callnum, process, tc, 1);
737}
738
739/// Target renameat() handler.
740template <class OS>
741SyscallReturn
| 731{
732 int index = 0;
733 int dirfd = process->getSyscallArg(tc, index);
734 if (dirfd != OS::TGT_AT_FDCWD)
735 warn("openat: first argument not AT_FDCWD; unlikely to work");
736 return readlinkFunc(desc, callnum, process, tc, 1);
737}
738
739/// Target renameat() handler.
740template <class OS>
741SyscallReturn
|
742renameatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 742renameatFunc(SyscallDesc *desc, int callnum, Process *process,
|
743 ThreadContext *tc)
744{
745 int index = 0;
746
747 int olddirfd = process->getSyscallArg(tc, index);
748 if (olddirfd != OS::TGT_AT_FDCWD)
749 warn("renameat: first argument not AT_FDCWD; unlikely to work");
750
751 std::string old_name;
752
753 if (!tc->getMemProxy().tryReadString(old_name,
754 process->getSyscallArg(tc, index)))
755 return -EFAULT;
756
757 int newdirfd = process->getSyscallArg(tc, index);
758 if (newdirfd != OS::TGT_AT_FDCWD)
759 warn("renameat: third argument not AT_FDCWD; unlikely to work");
760
761 std::string new_name;
762
763 if (!tc->getMemProxy().tryReadString(new_name,
764 process->getSyscallArg(tc, index)))
765 return -EFAULT;
766
767 // Adjust path for current working directory
768 old_name = process->fullPath(old_name);
769 new_name = process->fullPath(new_name);
770
771 int result = rename(old_name.c_str(), new_name.c_str());
772 return (result == -1) ? -errno : result;
773}
774
775/// Target sysinfo() handler.
776template <class OS>
777SyscallReturn
| 743 ThreadContext *tc)
744{
745 int index = 0;
746
747 int olddirfd = process->getSyscallArg(tc, index);
748 if (olddirfd != OS::TGT_AT_FDCWD)
749 warn("renameat: first argument not AT_FDCWD; unlikely to work");
750
751 std::string old_name;
752
753 if (!tc->getMemProxy().tryReadString(old_name,
754 process->getSyscallArg(tc, index)))
755 return -EFAULT;
756
757 int newdirfd = process->getSyscallArg(tc, index);
758 if (newdirfd != OS::TGT_AT_FDCWD)
759 warn("renameat: third argument not AT_FDCWD; unlikely to work");
760
761 std::string new_name;
762
763 if (!tc->getMemProxy().tryReadString(new_name,
764 process->getSyscallArg(tc, index)))
765 return -EFAULT;
766
767 // Adjust path for current working directory
768 old_name = process->fullPath(old_name);
769 new_name = process->fullPath(new_name);
770
771 int result = rename(old_name.c_str(), new_name.c_str());
772 return (result == -1) ? -errno : result;
773}
774
775/// Target sysinfo() handler.
776template <class OS>
777SyscallReturn
|
778sysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
779 ThreadContext *tc)
| 778sysinfoFunc(SyscallDesc *desc, int callnum, Process *process,
779 ThreadContext *tc)
|
780{
781
782 int index = 0;
783 TypedBufferArg<typename OS::tgt_sysinfo>
784 sysinfo(process->getSyscallArg(tc, index));
785
786 sysinfo->uptime = seconds_since_epoch;
787 sysinfo->totalram = process->system->memSize();
788 sysinfo->mem_unit = 1;
789
790 sysinfo.copyOut(tc->getMemProxy());
791
792 return 0;
793}
794
795/// Target chmod() handler.
796template <class OS>
797SyscallReturn
| 780{
781
782 int index = 0;
783 TypedBufferArg<typename OS::tgt_sysinfo>
784 sysinfo(process->getSyscallArg(tc, index));
785
786 sysinfo->uptime = seconds_since_epoch;
787 sysinfo->totalram = process->system->memSize();
788 sysinfo->mem_unit = 1;
789
790 sysinfo.copyOut(tc->getMemProxy());
791
792 return 0;
793}
794
795/// Target chmod() handler.
796template <class OS>
797SyscallReturn
|
798chmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 798chmodFunc(SyscallDesc *desc, int callnum, Process *process,
|
799 ThreadContext *tc)
800{
801 std::string path;
802
803 int index = 0;
804 if (!tc->getMemProxy().tryReadString(path,
805 process->getSyscallArg(tc, index))) {
806 return -EFAULT;
807 }
808
809 uint32_t mode = process->getSyscallArg(tc, index);
810 mode_t hostMode = 0;
811
812 // XXX translate mode flags via OS::something???
813 hostMode = mode;
814
815 // Adjust path for current working directory
816 path = process->fullPath(path);
817
818 // do the chmod
819 int result = chmod(path.c_str(), hostMode);
820 if (result < 0)
821 return -errno;
822
823 return 0;
824}
825
826
827/// Target fchmod() handler.
828template <class OS>
829SyscallReturn
| 799 ThreadContext *tc)
800{
801 std::string path;
802
803 int index = 0;
804 if (!tc->getMemProxy().tryReadString(path,
805 process->getSyscallArg(tc, index))) {
806 return -EFAULT;
807 }
808
809 uint32_t mode = process->getSyscallArg(tc, index);
810 mode_t hostMode = 0;
811
812 // XXX translate mode flags via OS::something???
813 hostMode = mode;
814
815 // Adjust path for current working directory
816 path = process->fullPath(path);
817
818 // do the chmod
819 int result = chmod(path.c_str(), hostMode);
820 if (result < 0)
821 return -errno;
822
823 return 0;
824}
825
826
827/// Target fchmod() handler.
828template <class OS>
829SyscallReturn
|
830fchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 830fchmodFunc(SyscallDesc *desc, int callnum, Process *process,
|
831 ThreadContext *tc)
832{
833 int index = 0;
834 int tgt_fd = process->getSyscallArg(tc, index);
835 uint32_t mode = process->getSyscallArg(tc, index);
836
837 int sim_fd = process->getSimFD(tgt_fd);
838 if (sim_fd < 0)
839 return -EBADF;
840
841 mode_t hostMode = 0;
842
843 // XXX translate mode flags via OS::someting???
844 hostMode = mode;
845
846 // do the fchmod
847 int result = fchmod(sim_fd, hostMode);
848 if (result < 0)
849 return -errno;
850
851 return 0;
852}
853
854/// Target mremap() handler.
855template <class OS>
856SyscallReturn
| 831 ThreadContext *tc)
832{
833 int index = 0;
834 int tgt_fd = process->getSyscallArg(tc, index);
835 uint32_t mode = process->getSyscallArg(tc, index);
836
837 int sim_fd = process->getSimFD(tgt_fd);
838 if (sim_fd < 0)
839 return -EBADF;
840
841 mode_t hostMode = 0;
842
843 // XXX translate mode flags via OS::someting???
844 hostMode = mode;
845
846 // do the fchmod
847 int result = fchmod(sim_fd, hostMode);
848 if (result < 0)
849 return -errno;
850
851 return 0;
852}
853
854/// Target mremap() handler.
855template <class OS>
856SyscallReturn
|
857mremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc)
| 857mremapFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc)
|
858{
859 int index = 0;
860 Addr start = process->getSyscallArg(tc, index);
861 uint64_t old_length = process->getSyscallArg(tc, index);
862 uint64_t new_length = process->getSyscallArg(tc, index);
863 uint64_t flags = process->getSyscallArg(tc, index);
864 uint64_t provided_address = 0;
865 bool use_provided_address = flags & OS::TGT_MREMAP_FIXED;
866
867 if (use_provided_address)
868 provided_address = process->getSyscallArg(tc, index);
869
870 if ((start % TheISA::PageBytes != 0) ||
871 (provided_address % TheISA::PageBytes != 0)) {
872 warn("mremap failing: arguments not page aligned");
873 return -EINVAL;
874 }
875
876 new_length = roundUp(new_length, TheISA::PageBytes);
877
878 if (new_length > old_length) {
879 if ((start + old_length) == process->mmap_end &&
880 (!use_provided_address || provided_address == start)) {
881 uint64_t diff = new_length - old_length;
882 process->allocateMem(process->mmap_end, diff);
883 process->mmap_end += diff;
884 return start;
885 } else {
886 if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) {
887 warn("can't remap here and MREMAP_MAYMOVE flag not set\n");
888 return -ENOMEM;
889 } else {
890 uint64_t new_start = use_provided_address ?
891 provided_address : process->mmap_end;
892 process->pTable->remap(start, old_length, new_start);
893 warn("mremapping to new vaddr %08p-%08p, adding %d\n",
894 new_start, new_start + new_length,
895 new_length - old_length);
896 // add on the remaining unallocated pages
897 process->allocateMem(new_start + old_length,
898 new_length - old_length,
899 use_provided_address /* clobber */);
900 if (!use_provided_address)
901 process->mmap_end += new_length;
902 if (use_provided_address &&
903 new_start + new_length > process->mmap_end) {
904 // something fishy going on here, at least notify the user
905 // @todo: increase mmap_end?
906 warn("mmap region limit exceeded with MREMAP_FIXED\n");
907 }
908 warn("returning %08p as start\n", new_start);
909 return new_start;
910 }
911 }
912 } else {
913 if (use_provided_address && provided_address != start)
914 process->pTable->remap(start, new_length, provided_address);
915 process->pTable->unmap(start + new_length, old_length - new_length);
916 return use_provided_address ? provided_address : start;
917 }
918}
919
920/// Target stat() handler.
921template <class OS>
922SyscallReturn
| 858{
859 int index = 0;
860 Addr start = process->getSyscallArg(tc, index);
861 uint64_t old_length = process->getSyscallArg(tc, index);
862 uint64_t new_length = process->getSyscallArg(tc, index);
863 uint64_t flags = process->getSyscallArg(tc, index);
864 uint64_t provided_address = 0;
865 bool use_provided_address = flags & OS::TGT_MREMAP_FIXED;
866
867 if (use_provided_address)
868 provided_address = process->getSyscallArg(tc, index);
869
870 if ((start % TheISA::PageBytes != 0) ||
871 (provided_address % TheISA::PageBytes != 0)) {
872 warn("mremap failing: arguments not page aligned");
873 return -EINVAL;
874 }
875
876 new_length = roundUp(new_length, TheISA::PageBytes);
877
878 if (new_length > old_length) {
879 if ((start + old_length) == process->mmap_end &&
880 (!use_provided_address || provided_address == start)) {
881 uint64_t diff = new_length - old_length;
882 process->allocateMem(process->mmap_end, diff);
883 process->mmap_end += diff;
884 return start;
885 } else {
886 if (!use_provided_address && !(flags & OS::TGT_MREMAP_MAYMOVE)) {
887 warn("can't remap here and MREMAP_MAYMOVE flag not set\n");
888 return -ENOMEM;
889 } else {
890 uint64_t new_start = use_provided_address ?
891 provided_address : process->mmap_end;
892 process->pTable->remap(start, old_length, new_start);
893 warn("mremapping to new vaddr %08p-%08p, adding %d\n",
894 new_start, new_start + new_length,
895 new_length - old_length);
896 // add on the remaining unallocated pages
897 process->allocateMem(new_start + old_length,
898 new_length - old_length,
899 use_provided_address /* clobber */);
900 if (!use_provided_address)
901 process->mmap_end += new_length;
902 if (use_provided_address &&
903 new_start + new_length > process->mmap_end) {
904 // something fishy going on here, at least notify the user
905 // @todo: increase mmap_end?
906 warn("mmap region limit exceeded with MREMAP_FIXED\n");
907 }
908 warn("returning %08p as start\n", new_start);
909 return new_start;
910 }
911 }
912 } else {
913 if (use_provided_address && provided_address != start)
914 process->pTable->remap(start, new_length, provided_address);
915 process->pTable->unmap(start + new_length, old_length - new_length);
916 return use_provided_address ? provided_address : start;
917 }
918}
919
920/// Target stat() handler.
921template <class OS>
922SyscallReturn
|
923statFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 923statFunc(SyscallDesc *desc, int callnum, Process *process,
|
924 ThreadContext *tc)
925{
926 std::string path;
927
928 int index = 0;
929 if (!tc->getMemProxy().tryReadString(path,
930 process->getSyscallArg(tc, index))) {
931 return -EFAULT;
932 }
933 Addr bufPtr = process->getSyscallArg(tc, index);
934
935 // Adjust path for current working directory
936 path = process->fullPath(path);
937
938 struct stat hostBuf;
939 int result = stat(path.c_str(), &hostBuf);
940
941 if (result < 0)
942 return -errno;
943
944 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
945
946 return 0;
947}
948
949
950/// Target stat64() handler.
951template <class OS>
952SyscallReturn
| 924 ThreadContext *tc)
925{
926 std::string path;
927
928 int index = 0;
929 if (!tc->getMemProxy().tryReadString(path,
930 process->getSyscallArg(tc, index))) {
931 return -EFAULT;
932 }
933 Addr bufPtr = process->getSyscallArg(tc, index);
934
935 // Adjust path for current working directory
936 path = process->fullPath(path);
937
938 struct stat hostBuf;
939 int result = stat(path.c_str(), &hostBuf);
940
941 if (result < 0)
942 return -errno;
943
944 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
945
946 return 0;
947}
948
949
950/// Target stat64() handler.
951template <class OS>
952SyscallReturn
|
953stat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
| 953stat64Func(SyscallDesc *desc, int callnum, Process *process,
|
954 ThreadContext *tc)
955{
956 std::string path;
957
958 int index = 0;
959 if (!tc->getMemProxy().tryReadString(path,
960 process->getSyscallArg(tc, index)))
961 return -EFAULT;
962 Addr bufPtr = process->getSyscallArg(tc, index);
963
964 // Adjust path for current working directory
965 path = process->fullPath(path);
966
967#if NO_STAT64
968 struct stat hostBuf;
969 int result = stat(path.c_str(), &hostBuf);
970#else
971 struct stat64 hostBuf;
972 int result = stat64(path.c_str(), &hostBuf);
973#endif
974
975 if (result < 0)
976 return -errno;
977
978 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
979
980 return 0;
981}
982
983
984/// Target fstatat64() handler.
985template <class OS>
986SyscallReturn
| 954 ThreadContext *tc)
955{
956 std::string path;
957
958 int index = 0;
959 if (!tc->getMemProxy().tryReadString(path,
960 process->getSyscallArg(tc, index)))
961 return -EFAULT;
962 Addr bufPtr = process->getSyscallArg(tc, index);
963
964 // Adjust path for current working directory
965 path = process->fullPath(path);
966
967#if NO_STAT64
968 struct stat hostBuf;
969 int result = stat(path.c_str(), &hostBuf);
970#else
971 struct stat64 hostBuf;
972 int result = stat64(path.c_str(), &hostBuf);
973#endif
974
975 if (result < 0)
976 return -errno;
977
978 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
979
980 return 0;
981}
982
983
984/// Target fstatat64() handler.
985template <class OS>
986SyscallReturn
|
987fstatat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
| 987fstatat64Func(SyscallDesc *desc, int callnum, Process *process,
|
988 ThreadContext *tc)
989{
990 int index = 0;
991 int dirfd = process->getSyscallArg(tc, index);
992 if (dirfd != OS::TGT_AT_FDCWD)
993 warn("fstatat64: first argument not AT_FDCWD; unlikely to work");
994
995 std::string path;
996 if (!tc->getMemProxy().tryReadString(path,
997 process->getSyscallArg(tc, index)))
998 return -EFAULT;
999 Addr bufPtr = process->getSyscallArg(tc, index);
1000
1001 // Adjust path for current working directory
1002 path = process->fullPath(path);
1003
1004#if NO_STAT64
1005 struct stat hostBuf;
1006 int result = stat(path.c_str(), &hostBuf);
1007#else
1008 struct stat64 hostBuf;
1009 int result = stat64(path.c_str(), &hostBuf);
1010#endif
1011
1012 if (result < 0)
1013 return -errno;
1014
1015 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1016
1017 return 0;
1018}
1019
1020
1021/// Target fstat64() handler.
1022template <class OS>
1023SyscallReturn
| 988 ThreadContext *tc)
989{
990 int index = 0;
991 int dirfd = process->getSyscallArg(tc, index);
992 if (dirfd != OS::TGT_AT_FDCWD)
993 warn("fstatat64: first argument not AT_FDCWD; unlikely to work");
994
995 std::string path;
996 if (!tc->getMemProxy().tryReadString(path,
997 process->getSyscallArg(tc, index)))
998 return -EFAULT;
999 Addr bufPtr = process->getSyscallArg(tc, index);
1000
1001 // Adjust path for current working directory
1002 path = process->fullPath(path);
1003
1004#if NO_STAT64
1005 struct stat hostBuf;
1006 int result = stat(path.c_str(), &hostBuf);
1007#else
1008 struct stat64 hostBuf;
1009 int result = stat64(path.c_str(), &hostBuf);
1010#endif
1011
1012 if (result < 0)
1013 return -errno;
1014
1015 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1016
1017 return 0;
1018}
1019
1020
1021/// Target fstat64() handler.
1022template <class OS>
1023SyscallReturn
|
1024fstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
| 1024fstat64Func(SyscallDesc *desc, int callnum, Process *process,
|
1025 ThreadContext *tc)
1026{
1027 int index = 0;
1028 int tgt_fd = process->getSyscallArg(tc, index);
1029 Addr bufPtr = process->getSyscallArg(tc, index);
1030
1031 int sim_fd = process->getSimFD(tgt_fd);
1032 if (sim_fd < 0)
1033 return -EBADF;
1034
1035#if NO_STAT64
1036 struct stat hostBuf;
1037 int result = fstat(sim_fd, &hostBuf);
1038#else
1039 struct stat64 hostBuf;
1040 int result = fstat64(sim_fd, &hostBuf);
1041#endif
1042
1043 if (result < 0)
1044 return -errno;
1045
1046 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1));
1047
1048 return 0;
1049}
1050
1051
1052/// Target lstat() handler.
1053template <class OS>
1054SyscallReturn
| 1025 ThreadContext *tc)
1026{
1027 int index = 0;
1028 int tgt_fd = process->getSyscallArg(tc, index);
1029 Addr bufPtr = process->getSyscallArg(tc, index);
1030
1031 int sim_fd = process->getSimFD(tgt_fd);
1032 if (sim_fd < 0)
1033 return -EBADF;
1034
1035#if NO_STAT64
1036 struct stat hostBuf;
1037 int result = fstat(sim_fd, &hostBuf);
1038#else
1039 struct stat64 hostBuf;
1040 int result = fstat64(sim_fd, &hostBuf);
1041#endif
1042
1043 if (result < 0)
1044 return -errno;
1045
1046 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1));
1047
1048 return 0;
1049}
1050
1051
1052/// Target lstat() handler.
1053template <class OS>
1054SyscallReturn
|
1055lstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 1055lstatFunc(SyscallDesc *desc, int callnum, Process *process,
|
1056 ThreadContext *tc)
1057{
1058 std::string path;
1059
1060 int index = 0;
1061 if (!tc->getMemProxy().tryReadString(path,
1062 process->getSyscallArg(tc, index))) {
1063 return -EFAULT;
1064 }
1065 Addr bufPtr = process->getSyscallArg(tc, index);
1066
1067 // Adjust path for current working directory
1068 path = process->fullPath(path);
1069
1070 struct stat hostBuf;
1071 int result = lstat(path.c_str(), &hostBuf);
1072
1073 if (result < 0)
1074 return -errno;
1075
1076 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1077
1078 return 0;
1079}
1080
1081/// Target lstat64() handler.
1082template <class OS>
1083SyscallReturn
| 1056 ThreadContext *tc)
1057{
1058 std::string path;
1059
1060 int index = 0;
1061 if (!tc->getMemProxy().tryReadString(path,
1062 process->getSyscallArg(tc, index))) {
1063 return -EFAULT;
1064 }
1065 Addr bufPtr = process->getSyscallArg(tc, index);
1066
1067 // Adjust path for current working directory
1068 path = process->fullPath(path);
1069
1070 struct stat hostBuf;
1071 int result = lstat(path.c_str(), &hostBuf);
1072
1073 if (result < 0)
1074 return -errno;
1075
1076 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1077
1078 return 0;
1079}
1080
1081/// Target lstat64() handler.
1082template <class OS>
1083SyscallReturn
|
1084lstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
| 1084lstat64Func(SyscallDesc *desc, int callnum, Process *process,
|
1085 ThreadContext *tc)
1086{
1087 std::string path;
1088
1089 int index = 0;
1090 if (!tc->getMemProxy().tryReadString(path,
1091 process->getSyscallArg(tc, index))) {
1092 return -EFAULT;
1093 }
1094 Addr bufPtr = process->getSyscallArg(tc, index);
1095
1096 // Adjust path for current working directory
1097 path = process->fullPath(path);
1098
1099#if NO_STAT64
1100 struct stat hostBuf;
1101 int result = lstat(path.c_str(), &hostBuf);
1102#else
1103 struct stat64 hostBuf;
1104 int result = lstat64(path.c_str(), &hostBuf);
1105#endif
1106
1107 if (result < 0)
1108 return -errno;
1109
1110 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1111
1112 return 0;
1113}
1114
1115/// Target fstat() handler.
1116template <class OS>
1117SyscallReturn
| 1085 ThreadContext *tc)
1086{
1087 std::string path;
1088
1089 int index = 0;
1090 if (!tc->getMemProxy().tryReadString(path,
1091 process->getSyscallArg(tc, index))) {
1092 return -EFAULT;
1093 }
1094 Addr bufPtr = process->getSyscallArg(tc, index);
1095
1096 // Adjust path for current working directory
1097 path = process->fullPath(path);
1098
1099#if NO_STAT64
1100 struct stat hostBuf;
1101 int result = lstat(path.c_str(), &hostBuf);
1102#else
1103 struct stat64 hostBuf;
1104 int result = lstat64(path.c_str(), &hostBuf);
1105#endif
1106
1107 if (result < 0)
1108 return -errno;
1109
1110 copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1111
1112 return 0;
1113}
1114
1115/// Target fstat() handler.
1116template <class OS>
1117SyscallReturn
|
1118fstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 1118fstatFunc(SyscallDesc *desc, int callnum, Process *process,
|
1119 ThreadContext *tc)
1120{
1121 int index = 0;
1122 int tgt_fd = process->getSyscallArg(tc, index);
1123 Addr bufPtr = process->getSyscallArg(tc, index);
1124
1125 DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd);
1126
1127 int sim_fd = process->getSimFD(tgt_fd);
1128 if (sim_fd < 0)
1129 return -EBADF;
1130
1131 struct stat hostBuf;
1132 int result = fstat(sim_fd, &hostBuf);
1133
1134 if (result < 0)
1135 return -errno;
1136
1137 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1));
1138
1139 return 0;
1140}
1141
1142
1143/// Target statfs() handler.
1144template <class OS>
1145SyscallReturn
| 1119 ThreadContext *tc)
1120{
1121 int index = 0;
1122 int tgt_fd = process->getSyscallArg(tc, index);
1123 Addr bufPtr = process->getSyscallArg(tc, index);
1124
1125 DPRINTF_SYSCALL(Verbose, "fstat(%d, ...)\n", tgt_fd);
1126
1127 int sim_fd = process->getSimFD(tgt_fd);
1128 if (sim_fd < 0)
1129 return -EBADF;
1130
1131 struct stat hostBuf;
1132 int result = fstat(sim_fd, &hostBuf);
1133
1134 if (result < 0)
1135 return -errno;
1136
1137 copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (sim_fd == 1));
1138
1139 return 0;
1140}
1141
1142
1143/// Target statfs() handler.
1144template <class OS>
1145SyscallReturn
|
1146statfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 1146statfsFunc(SyscallDesc *desc, int callnum, Process *process,
|
1147 ThreadContext *tc)
1148{
1149#if NO_STATFS
1150 warn("Host OS cannot support calls to statfs. Ignoring syscall");
1151#else
1152 std::string path;
1153
1154 int index = 0;
1155 if (!tc->getMemProxy().tryReadString(path,
1156 process->getSyscallArg(tc, index))) {
1157 return -EFAULT;
1158 }
1159 Addr bufPtr = process->getSyscallArg(tc, index);
1160
1161 // Adjust path for current working directory
1162 path = process->fullPath(path);
1163
1164 struct statfs hostBuf;
1165 int result = statfs(path.c_str(), &hostBuf);
1166
1167 if (result < 0)
1168 return -errno;
1169
1170 copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1171#endif
1172 return 0;
1173}
1174
1175
1176/// Target fstatfs() handler.
1177template <class OS>
1178SyscallReturn
| 1147 ThreadContext *tc)
1148{
1149#if NO_STATFS
1150 warn("Host OS cannot support calls to statfs. Ignoring syscall");
1151#else
1152 std::string path;
1153
1154 int index = 0;
1155 if (!tc->getMemProxy().tryReadString(path,
1156 process->getSyscallArg(tc, index))) {
1157 return -EFAULT;
1158 }
1159 Addr bufPtr = process->getSyscallArg(tc, index);
1160
1161 // Adjust path for current working directory
1162 path = process->fullPath(path);
1163
1164 struct statfs hostBuf;
1165 int result = statfs(path.c_str(), &hostBuf);
1166
1167 if (result < 0)
1168 return -errno;
1169
1170 copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1171#endif
1172 return 0;
1173}
1174
1175
1176/// Target fstatfs() handler.
1177template <class OS>
1178SyscallReturn
|
1179fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 1179fstatfsFunc(SyscallDesc *desc, int callnum, Process *process,
|
1180 ThreadContext *tc)
1181{
1182 int index = 0;
1183 int tgt_fd = process->getSyscallArg(tc, index);
1184 Addr bufPtr = process->getSyscallArg(tc, index);
1185
1186 int sim_fd = process->getSimFD(tgt_fd);
1187 if (sim_fd < 0)
1188 return -EBADF;
1189
1190 struct statfs hostBuf;
1191 int result = fstatfs(sim_fd, &hostBuf);
1192
1193 if (result < 0)
1194 return -errno;
1195
1196 copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1197
1198 return 0;
1199}
1200
1201
1202/// Target writev() handler.
1203template <class OS>
1204SyscallReturn
| 1180 ThreadContext *tc)
1181{
1182 int index = 0;
1183 int tgt_fd = process->getSyscallArg(tc, index);
1184 Addr bufPtr = process->getSyscallArg(tc, index);
1185
1186 int sim_fd = process->getSimFD(tgt_fd);
1187 if (sim_fd < 0)
1188 return -EBADF;
1189
1190 struct statfs hostBuf;
1191 int result = fstatfs(sim_fd, &hostBuf);
1192
1193 if (result < 0)
1194 return -errno;
1195
1196 copyOutStatfsBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
1197
1198 return 0;
1199}
1200
1201
1202/// Target writev() handler.
1203template <class OS>
1204SyscallReturn
|
1205writevFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 1205writevFunc(SyscallDesc *desc, int callnum, Process *process,
|
1206 ThreadContext *tc)
1207{
1208 int index = 0;
1209 int tgt_fd = process->getSyscallArg(tc, index);
1210
1211 int sim_fd = process->getSimFD(tgt_fd);
1212 if (sim_fd < 0)
1213 return -EBADF;
1214
1215 SETranslatingPortProxy &p = tc->getMemProxy();
1216 uint64_t tiov_base = process->getSyscallArg(tc, index);
1217 size_t count = process->getSyscallArg(tc, index);
1218 struct iovec hiov[count];
1219 for (size_t i = 0; i < count; ++i) {
1220 typename OS::tgt_iovec tiov;
1221
1222 p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
1223 (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec));
1224 hiov[i].iov_len = TheISA::gtoh(tiov.iov_len);
1225 hiov[i].iov_base = new char [hiov[i].iov_len];
1226 p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
1227 hiov[i].iov_len);
1228 }
1229
1230 int result = writev(sim_fd, hiov, count);
1231
1232 for (size_t i = 0; i < count; ++i)
1233 delete [] (char *)hiov[i].iov_base;
1234
1235 if (result < 0)
1236 return -errno;
1237
1238 return result;
1239}
1240
1241/// Real mmap handler.
1242template <class OS>
1243SyscallReturn
| 1206 ThreadContext *tc)
1207{
1208 int index = 0;
1209 int tgt_fd = process->getSyscallArg(tc, index);
1210
1211 int sim_fd = process->getSimFD(tgt_fd);
1212 if (sim_fd < 0)
1213 return -EBADF;
1214
1215 SETranslatingPortProxy &p = tc->getMemProxy();
1216 uint64_t tiov_base = process->getSyscallArg(tc, index);
1217 size_t count = process->getSyscallArg(tc, index);
1218 struct iovec hiov[count];
1219 for (size_t i = 0; i < count; ++i) {
1220 typename OS::tgt_iovec tiov;
1221
1222 p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
1223 (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec));
1224 hiov[i].iov_len = TheISA::gtoh(tiov.iov_len);
1225 hiov[i].iov_base = new char [hiov[i].iov_len];
1226 p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
1227 hiov[i].iov_len);
1228 }
1229
1230 int result = writev(sim_fd, hiov, count);
1231
1232 for (size_t i = 0; i < count; ++i)
1233 delete [] (char *)hiov[i].iov_base;
1234
1235 if (result < 0)
1236 return -errno;
1237
1238 return result;
1239}
1240
1241/// Real mmap handler.
1242template <class OS>
1243SyscallReturn
|
1244mmapImpl(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc,
| 1244mmapImpl(SyscallDesc *desc, int num, Process *p, ThreadContext *tc,
|
1245 bool is_mmap2)
1246{
1247 int index = 0;
1248 Addr start = p->getSyscallArg(tc, index);
1249 uint64_t length = p->getSyscallArg(tc, index);
1250 int prot = p->getSyscallArg(tc, index);
1251 int tgt_flags = p->getSyscallArg(tc, index);
1252 int tgt_fd = p->getSyscallArg(tc, index);
1253 int offset = p->getSyscallArg(tc, index);
1254
1255 if (is_mmap2)
1256 offset *= TheISA::PageBytes;
1257
1258 if (start & (TheISA::PageBytes - 1) ||
1259 offset & (TheISA::PageBytes - 1) ||
1260 (tgt_flags & OS::TGT_MAP_PRIVATE &&
1261 tgt_flags & OS::TGT_MAP_SHARED) ||
1262 (!(tgt_flags & OS::TGT_MAP_PRIVATE) &&
1263 !(tgt_flags & OS::TGT_MAP_SHARED)) ||
1264 !length) {
1265 return -EINVAL;
1266 }
1267
1268 if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) {
1269 // With shared mmaps, there are two cases to consider:
1270 // 1) anonymous: writes should modify the mapping and this should be
1271 // visible to observers who share the mapping. Currently, it's
1272 // difficult to update the shared mapping because there's no
1273 // structure which maintains information about the which virtual
1274 // memory areas are shared. If that structure existed, it would be
1275 // possible to make the translations point to the same frames.
1276 // 2) file-backed: writes should modify the mapping and the file
1277 // which is backed by the mapping. The shared mapping problem is the
1278 // same as what was mentioned about the anonymous mappings. For
1279 // file-backed mappings, the writes to the file are difficult
1280 // because it requires syncing what the mapping holds with the file
1281 // that resides on the host system. So, any write on a real system
1282 // would cause the change to be propagated to the file mapping at
1283 // some point in the future (the inode is tracked along with the
1284 // mapping). This isn't guaranteed to always happen, but it usually
1285 // works well enough. The guarantee is provided by the msync system
1286 // call. We could force the change through with shared mappings with
1287 // a call to msync, but that again would require more information
1288 // than we currently maintain.
1289 warn("mmap: writing to shared mmap region is currently "
1290 "unsupported. The write succeeds on the target, but it "
1291 "will not be propagated to the host or shared mappings");
1292 }
1293
1294 length = roundUp(length, TheISA::PageBytes);
1295
1296 int sim_fd = -1;
1297 uint8_t *pmap = nullptr;
1298 if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) {
1299 // Check for EmulatedDriver mmap
1300 FDEntry *fde = p->getFDEntry(tgt_fd);
1301 if (fde == NULL)
1302 return -EBADF;
1303
1304 if (fde->driver != NULL) {
1305 return fde->driver->mmap(p, tc, start, length, prot,
1306 tgt_flags, tgt_fd, offset);
1307 }
1308 sim_fd = fde->fd;
1309
1310 if (sim_fd < 0)
1311 return -EBADF;
1312
1313 pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE,
1314 sim_fd, offset);
1315
1316 if (pmap == (decltype(pmap))-1) {
1317 warn("mmap: failed to map file into host address space");
1318 return -errno;
1319 }
1320 }
1321
1322 // Extend global mmap region if necessary. Note that we ignore the
1323 // start address unless MAP_FIXED is specified.
1324 if (!(tgt_flags & OS::TGT_MAP_FIXED)) {
1325 start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end;
1326 p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length;
1327 }
1328
1329 DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n",
1330 start, start + length - 1);
1331
1332 // We only allow mappings to overwrite existing mappings if
1333 // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem
1334 // because we ignore the start hint if TGT_MAP_FIXED is not set.
1335 int clobber = tgt_flags & OS::TGT_MAP_FIXED;
1336 if (clobber) {
1337 for (auto tc : p->system->threadContexts) {
1338 // If we might be overwriting old mappings, we need to
1339 // invalidate potentially stale mappings out of the TLBs.
1340 tc->getDTBPtr()->flushAll();
1341 tc->getITBPtr()->flushAll();
1342 }
1343 }
1344
1345 // Allocate physical memory and map it in. If the page table is already
1346 // mapped and clobber is not set, the simulator will issue throw a
1347 // fatal and bail out of the simulation.
1348 p->allocateMem(start, length, clobber);
1349
1350 // Transfer content into target address space.
1351 SETranslatingPortProxy &tp = tc->getMemProxy();
1352 if (tgt_flags & OS::TGT_MAP_ANONYMOUS) {
1353 // In general, we should zero the mapped area for anonymous mappings,
1354 // with something like:
1355 // tp.memsetBlob(start, 0, length);
1356 // However, given that we don't support sparse mappings, and
1357 // some applications can map a couple of gigabytes of space
1358 // (intending sparse usage), that can get painfully expensive.
1359 // Fortunately, since we don't properly implement munmap either,
1360 // there's no danger of remapping used memory, so for now all
1361 // newly mapped memory should already be zeroed so we can skip it.
1362 } else {
1363 // It is possible to mmap an area larger than a file, however
1364 // accessing unmapped portions the system triggers a "Bus error"
1365 // on the host. We must know when to stop copying the file from
1366 // the host into the target address space.
1367 struct stat file_stat;
1368 if (fstat(sim_fd, &file_stat) > 0)
1369 fatal("mmap: cannot stat file");
1370
1371 // Copy the portion of the file that is resident. This requires
1372 // checking both the mmap size and the filesize that we are
1373 // trying to mmap into this space; the mmap size also depends
1374 // on the specified offset into the file.
1375 uint64_t size = std::min((uint64_t)file_stat.st_size - offset,
1376 length);
1377 tp.writeBlob(start, pmap, size);
1378
1379 // Cleanup the mmap region before exiting this function.
1380 munmap(pmap, length);
1381
1382 // Maintain the symbol table for dynamic executables.
1383 // The loader will call mmap to map the images into its address
1384 // space and we intercept that here. We can verify that we are
1385 // executing inside the loader by checking the program counter value.
1386 // XXX: with multiprogrammed workloads or multi-node configurations,
1387 // this will not work since there is a single global symbol table.
1388 ObjectFile *interpreter = p->getInterpreter();
1389 if (interpreter) {
1390 Addr text_start = interpreter->textBase();
1391 Addr text_end = text_start + interpreter->textSize();
1392
1393 Addr pc = tc->pcState().pc();
1394
1395 if (pc >= text_start && pc < text_end) {
1396 FDEntry *fde = p->getFDEntry(tgt_fd);
1397
1398 ObjectFile *lib = createObjectFile(fde->filename);
1399
1400 if (lib) {
1401 lib->loadAllSymbols(debugSymbolTable,
1402 lib->textBase(), start);
1403 }
1404 }
1405 }
1406
1407 // Note that we do not zero out the remainder of the mapping. This
1408 // is done by a real system, but it probably will not affect
1409 // execution (hopefully).
1410 }
1411
1412 return start;
1413}
1414
1415template <class OS>
1416SyscallReturn
| 1245 bool is_mmap2)
1246{
1247 int index = 0;
1248 Addr start = p->getSyscallArg(tc, index);
1249 uint64_t length = p->getSyscallArg(tc, index);
1250 int prot = p->getSyscallArg(tc, index);
1251 int tgt_flags = p->getSyscallArg(tc, index);
1252 int tgt_fd = p->getSyscallArg(tc, index);
1253 int offset = p->getSyscallArg(tc, index);
1254
1255 if (is_mmap2)
1256 offset *= TheISA::PageBytes;
1257
1258 if (start & (TheISA::PageBytes - 1) ||
1259 offset & (TheISA::PageBytes - 1) ||
1260 (tgt_flags & OS::TGT_MAP_PRIVATE &&
1261 tgt_flags & OS::TGT_MAP_SHARED) ||
1262 (!(tgt_flags & OS::TGT_MAP_PRIVATE) &&
1263 !(tgt_flags & OS::TGT_MAP_SHARED)) ||
1264 !length) {
1265 return -EINVAL;
1266 }
1267
1268 if ((prot & PROT_WRITE) && (tgt_flags & OS::TGT_MAP_SHARED)) {
1269 // With shared mmaps, there are two cases to consider:
1270 // 1) anonymous: writes should modify the mapping and this should be
1271 // visible to observers who share the mapping. Currently, it's
1272 // difficult to update the shared mapping because there's no
1273 // structure which maintains information about the which virtual
1274 // memory areas are shared. If that structure existed, it would be
1275 // possible to make the translations point to the same frames.
1276 // 2) file-backed: writes should modify the mapping and the file
1277 // which is backed by the mapping. The shared mapping problem is the
1278 // same as what was mentioned about the anonymous mappings. For
1279 // file-backed mappings, the writes to the file are difficult
1280 // because it requires syncing what the mapping holds with the file
1281 // that resides on the host system. So, any write on a real system
1282 // would cause the change to be propagated to the file mapping at
1283 // some point in the future (the inode is tracked along with the
1284 // mapping). This isn't guaranteed to always happen, but it usually
1285 // works well enough. The guarantee is provided by the msync system
1286 // call. We could force the change through with shared mappings with
1287 // a call to msync, but that again would require more information
1288 // than we currently maintain.
1289 warn("mmap: writing to shared mmap region is currently "
1290 "unsupported. The write succeeds on the target, but it "
1291 "will not be propagated to the host or shared mappings");
1292 }
1293
1294 length = roundUp(length, TheISA::PageBytes);
1295
1296 int sim_fd = -1;
1297 uint8_t *pmap = nullptr;
1298 if (!(tgt_flags & OS::TGT_MAP_ANONYMOUS)) {
1299 // Check for EmulatedDriver mmap
1300 FDEntry *fde = p->getFDEntry(tgt_fd);
1301 if (fde == NULL)
1302 return -EBADF;
1303
1304 if (fde->driver != NULL) {
1305 return fde->driver->mmap(p, tc, start, length, prot,
1306 tgt_flags, tgt_fd, offset);
1307 }
1308 sim_fd = fde->fd;
1309
1310 if (sim_fd < 0)
1311 return -EBADF;
1312
1313 pmap = (decltype(pmap))mmap(NULL, length, PROT_READ, MAP_PRIVATE,
1314 sim_fd, offset);
1315
1316 if (pmap == (decltype(pmap))-1) {
1317 warn("mmap: failed to map file into host address space");
1318 return -errno;
1319 }
1320 }
1321
1322 // Extend global mmap region if necessary. Note that we ignore the
1323 // start address unless MAP_FIXED is specified.
1324 if (!(tgt_flags & OS::TGT_MAP_FIXED)) {
1325 start = p->mmapGrowsDown() ? p->mmap_end - length : p->mmap_end;
1326 p->mmap_end = p->mmapGrowsDown() ? start : p->mmap_end + length;
1327 }
1328
1329 DPRINTF_SYSCALL(Verbose, " mmap range is 0x%x - 0x%x\n",
1330 start, start + length - 1);
1331
1332 // We only allow mappings to overwrite existing mappings if
1333 // TGT_MAP_FIXED is set. Otherwise it shouldn't be a problem
1334 // because we ignore the start hint if TGT_MAP_FIXED is not set.
1335 int clobber = tgt_flags & OS::TGT_MAP_FIXED;
1336 if (clobber) {
1337 for (auto tc : p->system->threadContexts) {
1338 // If we might be overwriting old mappings, we need to
1339 // invalidate potentially stale mappings out of the TLBs.
1340 tc->getDTBPtr()->flushAll();
1341 tc->getITBPtr()->flushAll();
1342 }
1343 }
1344
1345 // Allocate physical memory and map it in. If the page table is already
1346 // mapped and clobber is not set, the simulator will issue throw a
1347 // fatal and bail out of the simulation.
1348 p->allocateMem(start, length, clobber);
1349
1350 // Transfer content into target address space.
1351 SETranslatingPortProxy &tp = tc->getMemProxy();
1352 if (tgt_flags & OS::TGT_MAP_ANONYMOUS) {
1353 // In general, we should zero the mapped area for anonymous mappings,
1354 // with something like:
1355 // tp.memsetBlob(start, 0, length);
1356 // However, given that we don't support sparse mappings, and
1357 // some applications can map a couple of gigabytes of space
1358 // (intending sparse usage), that can get painfully expensive.
1359 // Fortunately, since we don't properly implement munmap either,
1360 // there's no danger of remapping used memory, so for now all
1361 // newly mapped memory should already be zeroed so we can skip it.
1362 } else {
1363 // It is possible to mmap an area larger than a file, however
1364 // accessing unmapped portions the system triggers a "Bus error"
1365 // on the host. We must know when to stop copying the file from
1366 // the host into the target address space.
1367 struct stat file_stat;
1368 if (fstat(sim_fd, &file_stat) > 0)
1369 fatal("mmap: cannot stat file");
1370
1371 // Copy the portion of the file that is resident. This requires
1372 // checking both the mmap size and the filesize that we are
1373 // trying to mmap into this space; the mmap size also depends
1374 // on the specified offset into the file.
1375 uint64_t size = std::min((uint64_t)file_stat.st_size - offset,
1376 length);
1377 tp.writeBlob(start, pmap, size);
1378
1379 // Cleanup the mmap region before exiting this function.
1380 munmap(pmap, length);
1381
1382 // Maintain the symbol table for dynamic executables.
1383 // The loader will call mmap to map the images into its address
1384 // space and we intercept that here. We can verify that we are
1385 // executing inside the loader by checking the program counter value.
1386 // XXX: with multiprogrammed workloads or multi-node configurations,
1387 // this will not work since there is a single global symbol table.
1388 ObjectFile *interpreter = p->getInterpreter();
1389 if (interpreter) {
1390 Addr text_start = interpreter->textBase();
1391 Addr text_end = text_start + interpreter->textSize();
1392
1393 Addr pc = tc->pcState().pc();
1394
1395 if (pc >= text_start && pc < text_end) {
1396 FDEntry *fde = p->getFDEntry(tgt_fd);
1397
1398 ObjectFile *lib = createObjectFile(fde->filename);
1399
1400 if (lib) {
1401 lib->loadAllSymbols(debugSymbolTable,
1402 lib->textBase(), start);
1403 }
1404 }
1405 }
1406
1407 // Note that we do not zero out the remainder of the mapping. This
1408 // is done by a real system, but it probably will not affect
1409 // execution (hopefully).
1410 }
1411
1412 return start;
1413}
1414
1415template <class OS>
1416SyscallReturn
|
1417pwrite64Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
| 1417pwrite64Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc)
|
1418{
1419 int index = 0;
1420 int tgt_fd = p->getSyscallArg(tc, index);
1421 Addr bufPtr = p->getSyscallArg(tc, index);
1422 int nbytes = p->getSyscallArg(tc, index);
1423 int offset = p->getSyscallArg(tc, index);
1424
1425 int sim_fd = p->getSimFD(tgt_fd);
1426 if (sim_fd < 0)
1427 return -EBADF;
1428
1429 BufferArg bufArg(bufPtr, nbytes);
1430 bufArg.copyIn(tc->getMemProxy());
1431
1432 int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset);
1433
1434 return (bytes_written == -1) ? -errno : bytes_written;
1435}
1436
1437/// Target mmap() handler.
1438template <class OS>
1439SyscallReturn
| 1418{
1419 int index = 0;
1420 int tgt_fd = p->getSyscallArg(tc, index);
1421 Addr bufPtr = p->getSyscallArg(tc, index);
1422 int nbytes = p->getSyscallArg(tc, index);
1423 int offset = p->getSyscallArg(tc, index);
1424
1425 int sim_fd = p->getSimFD(tgt_fd);
1426 if (sim_fd < 0)
1427 return -EBADF;
1428
1429 BufferArg bufArg(bufPtr, nbytes);
1430 bufArg.copyIn(tc->getMemProxy());
1431
1432 int bytes_written = pwrite(sim_fd, bufArg.bufferPtr(), nbytes, offset);
1433
1434 return (bytes_written == -1) ? -errno : bytes_written;
1435}
1436
1437/// Target mmap() handler.
1438template <class OS>
1439SyscallReturn
|
1440mmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
| 1440mmapFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc)
|
1441{
1442 return mmapImpl<OS>(desc, num, p, tc, false);
1443}
1444
1445/// Target mmap2() handler.
1446template <class OS>
1447SyscallReturn
| 1441{
1442 return mmapImpl<OS>(desc, num, p, tc, false);
1443}
1444
1445/// Target mmap2() handler.
1446template <class OS>
1447SyscallReturn
|
1448mmap2Func(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
| 1448mmap2Func(SyscallDesc *desc, int num, Process *p, ThreadContext *tc)
|
1449{
1450 return mmapImpl<OS>(desc, num, p, tc, true);
1451}
1452
1453/// Target getrlimit() handler.
1454template <class OS>
1455SyscallReturn
| 1449{
1450 return mmapImpl<OS>(desc, num, p, tc, true);
1451}
1452
1453/// Target getrlimit() handler.
1454template <class OS>
1455SyscallReturn
|
1456getrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1457 ThreadContext *tc)
| 1456getrlimitFunc(SyscallDesc *desc, int callnum, Process *process,
1457 ThreadContext *tc)
|
1458{
1459 int index = 0;
1460 unsigned resource = process->getSyscallArg(tc, index);
1461 TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index));
1462
1463 switch (resource) {
1464 case OS::TGT_RLIMIT_STACK:
1465 // max stack size in bytes: make up a number (8MB for now)
1466 rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024;
1467 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1468 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
1469 break;
1470
1471 case OS::TGT_RLIMIT_DATA:
1472 // max data segment size in bytes: make up a number
1473 rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024;
1474 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1475 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
1476 break;
1477
1478 default:
1479 warn("getrlimit: unimplemented resource %d", resource);
1480 return -EINVAL;
1481 break;
1482 }
1483
1484 rlp.copyOut(tc->getMemProxy());
1485 return 0;
1486}
1487
1488/// Target clock_gettime() function.
1489template <class OS>
1490SyscallReturn
| 1458{
1459 int index = 0;
1460 unsigned resource = process->getSyscallArg(tc, index);
1461 TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index));
1462
1463 switch (resource) {
1464 case OS::TGT_RLIMIT_STACK:
1465 // max stack size in bytes: make up a number (8MB for now)
1466 rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024;
1467 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1468 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
1469 break;
1470
1471 case OS::TGT_RLIMIT_DATA:
1472 // max data segment size in bytes: make up a number
1473 rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024;
1474 rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
1475 rlp->rlim_max = TheISA::htog(rlp->rlim_max);
1476 break;
1477
1478 default:
1479 warn("getrlimit: unimplemented resource %d", resource);
1480 return -EINVAL;
1481 break;
1482 }
1483
1484 rlp.copyOut(tc->getMemProxy());
1485 return 0;
1486}
1487
1488/// Target clock_gettime() function.
1489template <class OS>
1490SyscallReturn
|
1491clock_gettimeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
| 1491clock_gettimeFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc)
|
1492{
1493 int index = 1;
1494 //int clk_id = p->getSyscallArg(tc, index);
1495 TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index));
1496
1497 getElapsedTimeNano(tp->tv_sec, tp->tv_nsec);
1498 tp->tv_sec += seconds_since_epoch;
1499 tp->tv_sec = TheISA::htog(tp->tv_sec);
1500 tp->tv_nsec = TheISA::htog(tp->tv_nsec);
1501
1502 tp.copyOut(tc->getMemProxy());
1503
1504 return 0;
1505}
1506
1507/// Target clock_getres() function.
1508template <class OS>
1509SyscallReturn
| 1492{
1493 int index = 1;
1494 //int clk_id = p->getSyscallArg(tc, index);
1495 TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index));
1496
1497 getElapsedTimeNano(tp->tv_sec, tp->tv_nsec);
1498 tp->tv_sec += seconds_since_epoch;
1499 tp->tv_sec = TheISA::htog(tp->tv_sec);
1500 tp->tv_nsec = TheISA::htog(tp->tv_nsec);
1501
1502 tp.copyOut(tc->getMemProxy());
1503
1504 return 0;
1505}
1506
1507/// Target clock_getres() function.
1508template <class OS>
1509SyscallReturn
|
1510clock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
| 1510clock_getresFunc(SyscallDesc *desc, int num, Process *p, ThreadContext *tc)
|
1511{
1512 int index = 1;
1513 TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index));
1514
1515 // Set resolution at ns, which is what clock_gettime() returns
1516 tp->tv_sec = 0;
1517 tp->tv_nsec = 1;
1518
1519 tp.copyOut(tc->getMemProxy());
1520
1521 return 0;
1522}
1523
1524/// Target gettimeofday() handler.
1525template <class OS>
1526SyscallReturn
| 1511{
1512 int index = 1;
1513 TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index));
1514
1515 // Set resolution at ns, which is what clock_gettime() returns
1516 tp->tv_sec = 0;
1517 tp->tv_nsec = 1;
1518
1519 tp.copyOut(tc->getMemProxy());
1520
1521 return 0;
1522}
1523
1524/// Target gettimeofday() handler.
1525template <class OS>
1526SyscallReturn
|
1527gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1528 ThreadContext *tc)
| 1527gettimeofdayFunc(SyscallDesc *desc, int callnum, Process *process,
1528 ThreadContext *tc)
|
1529{
1530 int index = 0;
1531 TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index));
1532
1533 getElapsedTimeMicro(tp->tv_sec, tp->tv_usec);
1534 tp->tv_sec += seconds_since_epoch;
1535 tp->tv_sec = TheISA::htog(tp->tv_sec);
1536 tp->tv_usec = TheISA::htog(tp->tv_usec);
1537
1538 tp.copyOut(tc->getMemProxy());
1539
1540 return 0;
1541}
1542
1543
1544/// Target utimes() handler.
1545template <class OS>
1546SyscallReturn
| 1529{
1530 int index = 0;
1531 TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index));
1532
1533 getElapsedTimeMicro(tp->tv_sec, tp->tv_usec);
1534 tp->tv_sec += seconds_since_epoch;
1535 tp->tv_sec = TheISA::htog(tp->tv_sec);
1536 tp->tv_usec = TheISA::htog(tp->tv_usec);
1537
1538 tp.copyOut(tc->getMemProxy());
1539
1540 return 0;
1541}
1542
1543
1544/// Target utimes() handler.
1545template <class OS>
1546SyscallReturn
|
1547utimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 1547utimesFunc(SyscallDesc *desc, int callnum, Process *process,
|
1548 ThreadContext *tc)
1549{
1550 std::string path;
1551
1552 int index = 0;
1553 if (!tc->getMemProxy().tryReadString(path,
1554 process->getSyscallArg(tc, index))) {
1555 return -EFAULT;
1556 }
1557
1558 TypedBufferArg<typename OS::timeval [2]>
1559 tp(process->getSyscallArg(tc, index));
1560 tp.copyIn(tc->getMemProxy());
1561
1562 struct timeval hostTimeval[2];
1563 for (int i = 0; i < 2; ++i)
1564 {
1565 hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec);
1566 hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec);
1567 }
1568
1569 // Adjust path for current working directory
1570 path = process->fullPath(path);
1571
1572 int result = utimes(path.c_str(), hostTimeval);
1573
1574 if (result < 0)
1575 return -errno;
1576
1577 return 0;
1578}
1579/// Target getrusage() function.
1580template <class OS>
1581SyscallReturn
| 1548 ThreadContext *tc)
1549{
1550 std::string path;
1551
1552 int index = 0;
1553 if (!tc->getMemProxy().tryReadString(path,
1554 process->getSyscallArg(tc, index))) {
1555 return -EFAULT;
1556 }
1557
1558 TypedBufferArg<typename OS::timeval [2]>
1559 tp(process->getSyscallArg(tc, index));
1560 tp.copyIn(tc->getMemProxy());
1561
1562 struct timeval hostTimeval[2];
1563 for (int i = 0; i < 2; ++i)
1564 {
1565 hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec);
1566 hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec);
1567 }
1568
1569 // Adjust path for current working directory
1570 path = process->fullPath(path);
1571
1572 int result = utimes(path.c_str(), hostTimeval);
1573
1574 if (result < 0)
1575 return -errno;
1576
1577 return 0;
1578}
1579/// Target getrusage() function.
1580template <class OS>
1581SyscallReturn
|
1582getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
| 1582getrusageFunc(SyscallDesc *desc, int callnum, Process *process,
|
1583 ThreadContext *tc)
1584{
1585 int index = 0;
1586 int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN
1587 TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index));
1588
1589 rup->ru_utime.tv_sec = 0;
1590 rup->ru_utime.tv_usec = 0;
1591 rup->ru_stime.tv_sec = 0;
1592 rup->ru_stime.tv_usec = 0;
1593 rup->ru_maxrss = 0;
1594 rup->ru_ixrss = 0;
1595 rup->ru_idrss = 0;
1596 rup->ru_isrss = 0;
1597 rup->ru_minflt = 0;
1598 rup->ru_majflt = 0;
1599 rup->ru_nswap = 0;
1600 rup->ru_inblock = 0;
1601 rup->ru_oublock = 0;
1602 rup->ru_msgsnd = 0;
1603 rup->ru_msgrcv = 0;
1604 rup->ru_nsignals = 0;
1605 rup->ru_nvcsw = 0;
1606 rup->ru_nivcsw = 0;
1607
1608 switch (who) {
1609 case OS::TGT_RUSAGE_SELF:
1610 getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
1611 rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec);
1612 rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec);
1613 break;
1614
1615 case OS::TGT_RUSAGE_CHILDREN:
1616 // do nothing. We have no child processes, so they take no time.
1617 break;
1618
1619 default:
1620 // don't really handle THREAD or CHILDREN, but just warn and
1621 // plow ahead
1622 warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
1623 who);
1624 }
1625
1626 rup.copyOut(tc->getMemProxy());
1627
1628 return 0;
1629}
1630
1631/// Target times() function.
1632template <class OS>
1633SyscallReturn
| 1583 ThreadContext *tc)
1584{
1585 int index = 0;
1586 int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN
1587 TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index));
1588
1589 rup->ru_utime.tv_sec = 0;
1590 rup->ru_utime.tv_usec = 0;
1591 rup->ru_stime.tv_sec = 0;
1592 rup->ru_stime.tv_usec = 0;
1593 rup->ru_maxrss = 0;
1594 rup->ru_ixrss = 0;
1595 rup->ru_idrss = 0;
1596 rup->ru_isrss = 0;
1597 rup->ru_minflt = 0;
1598 rup->ru_majflt = 0;
1599 rup->ru_nswap = 0;
1600 rup->ru_inblock = 0;
1601 rup->ru_oublock = 0;
1602 rup->ru_msgsnd = 0;
1603 rup->ru_msgrcv = 0;
1604 rup->ru_nsignals = 0;
1605 rup->ru_nvcsw = 0;
1606 rup->ru_nivcsw = 0;
1607
1608 switch (who) {
1609 case OS::TGT_RUSAGE_SELF:
1610 getElapsedTimeMicro(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
1611 rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec);
1612 rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec);
1613 break;
1614
1615 case OS::TGT_RUSAGE_CHILDREN:
1616 // do nothing. We have no child processes, so they take no time.
1617 break;
1618
1619 default:
1620 // don't really handle THREAD or CHILDREN, but just warn and
1621 // plow ahead
1622 warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
1623 who);
1624 }
1625
1626 rup.copyOut(tc->getMemProxy());
1627
1628 return 0;
1629}
1630
1631/// Target times() function.
1632template <class OS>
1633SyscallReturn
|
1634timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1635 ThreadContext *tc)
| 1634timesFunc(SyscallDesc *desc, int callnum, Process *process,
1635 ThreadContext *tc)
|
1636{
1637 int index = 0;
1638 TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index));
1639
1640 // Fill in the time structure (in clocks)
1641 int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s;
1642 bufp->tms_utime = clocks;
1643 bufp->tms_stime = 0;
1644 bufp->tms_cutime = 0;
1645 bufp->tms_cstime = 0;
1646
1647 // Convert to host endianness
1648 bufp->tms_utime = TheISA::htog(bufp->tms_utime);
1649
1650 // Write back
1651 bufp.copyOut(tc->getMemProxy());
1652
1653 // Return clock ticks since system boot
1654 return clocks;
1655}
1656
1657/// Target time() function.
1658template <class OS>
1659SyscallReturn
| 1636{
1637 int index = 0;
1638 TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index));
1639
1640 // Fill in the time structure (in clocks)
1641 int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s;
1642 bufp->tms_utime = clocks;
1643 bufp->tms_stime = 0;
1644 bufp->tms_cutime = 0;
1645 bufp->tms_cstime = 0;
1646
1647 // Convert to host endianness
1648 bufp->tms_utime = TheISA::htog(bufp->tms_utime);
1649
1650 // Write back
1651 bufp.copyOut(tc->getMemProxy());
1652
1653 // Return clock ticks since system boot
1654 return clocks;
1655}
1656
1657/// Target time() function.
1658template <class OS>
1659SyscallReturn
|
1660timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
1661 ThreadContext *tc)
| 1660timeFunc(SyscallDesc *desc, int callnum, Process *process, ThreadContext *tc)
|
1662{
1663 typename OS::time_t sec, usec;
1664 getElapsedTimeMicro(sec, usec);
1665 sec += seconds_since_epoch;
1666
1667 int index = 0;
1668 Addr taddr = (Addr)process->getSyscallArg(tc, index);
1669 if (taddr != 0) {
1670 typename OS::time_t t = sec;
1671 t = TheISA::htog(t);
1672 SETranslatingPortProxy &p = tc->getMemProxy();
1673 p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
1674 }
1675 return sec;
1676}
1677
1678
1679#endif // __SIM_SYSCALL_EMUL_HH__
| 1661{
1662 typename OS::time_t sec, usec;
1663 getElapsedTimeMicro(sec, usec);
1664 sec += seconds_since_epoch;
1665
1666 int index = 0;
1667 Addr taddr = (Addr)process->getSyscallArg(tc, index);
1668 if (taddr != 0) {
1669 typename OS::time_t t = sec;
1670 t = TheISA::htog(t);
1671 SETranslatingPortProxy &p = tc->getMemProxy();
1672 p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
1673 }
1674 return sec;
1675}
1676
1677
1678#endif // __SIM_SYSCALL_EMUL_HH__
|