process.cc revision 9146:a61fdbbc1d45 
1/*
2 * Copyright (c) 2010 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Copyright (c) 2003-2005 The Regents of The University of Michigan
15 * Copyright (c) 2007-2008 The Florida State University
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: Korey Sewell
42 *          Stephen Hines
43 *          Ali Saidi
44 */
45
46#include "arch/arm/linux/linux.hh"
47#include "arch/arm/linux/process.hh"
48#include "arch/arm/isa_traits.hh"
49#include "base/trace.hh"
50#include "cpu/thread_context.hh"
51#include "kern/linux/linux.hh"
52#include "sim/process.hh"
53#include "sim/syscall_emul.hh"
54#include "sim/system.hh"
55
56using namespace std;
57using namespace ArmISA;
58
59/// Target uname() handler.
60static SyscallReturn
61unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
62          ThreadContext *tc)
63{
64    int index = 0;
65    TypedBufferArg<Linux::utsname> name(process->getSyscallArg(tc, index));
66
67    strcpy(name->sysname, "Linux");
68    strcpy(name->nodename, "m5.eecs.umich.edu");
69    strcpy(name->release, "3.0.0");
70    strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
71    strcpy(name->machine, "armv7l");
72
73    name.copyOut(tc->getMemProxy());
74    return 0;
75}
76
77SyscallDesc ArmLinuxProcess::syscallDescs[] = {
78    /*  0 */ SyscallDesc("syscall", unimplementedFunc),
79    /*  1 */ SyscallDesc("exit", exitFunc),
80    /*  2 */ SyscallDesc("fork", unimplementedFunc),
81    /*  3 */ SyscallDesc("read", readFunc),
82    /*  4 */ SyscallDesc("write", writeFunc),
83    /*  5 */ SyscallDesc("open", openFunc<ArmLinux>),
84    /*  6 */ SyscallDesc("close", closeFunc),
85    /*  7 */ SyscallDesc("unused#7", unimplementedFunc),
86    /*  8 */ SyscallDesc("creat", unimplementedFunc),
87    /*  9 */ SyscallDesc("link", unimplementedFunc),
88    /* 10 */ SyscallDesc("unlink", unlinkFunc),
89    /* 11 */ SyscallDesc("execve", unimplementedFunc),
90    /* 12 */ SyscallDesc("chdir", unimplementedFunc),
91    /* 13 */ SyscallDesc("time", timeFunc<ArmLinux>),
92    /* 14 */ SyscallDesc("mknod", unimplementedFunc),
93    /* 15 */ SyscallDesc("chmod", chmodFunc<ArmLinux>),
94    /* 16 */ SyscallDesc("lchown", chownFunc),
95    /* 17 */ SyscallDesc("unused#17", unimplementedFunc),
96    /* 18 */ SyscallDesc("unused#18", unimplementedFunc),
97    /* 19 */ SyscallDesc("lseek", lseekFunc),
98    /* 20 */ SyscallDesc("getpid", getpidFunc),
99    /* 21 */ SyscallDesc("mount", unimplementedFunc),
100    /* 22 */ SyscallDesc("umount", unimplementedFunc),
101    /* 23 */ SyscallDesc("setuid", setuidFunc),
102    /* 24 */ SyscallDesc("getuid", getuidFunc),
103    /* 25 */ SyscallDesc("stime", unimplementedFunc),
104    /* 26 */ SyscallDesc("ptrace", unimplementedFunc),
105    /* 27 */ SyscallDesc("alarm", unimplementedFunc),
106    /* 28 */ SyscallDesc("unused#28", unimplementedFunc),
107    /* 29 */ SyscallDesc("pause", unimplementedFunc),
108    /* 30 */ SyscallDesc("utime", unimplementedFunc),
109    /* 31 */ SyscallDesc("unused#31", unimplementedFunc),
110    /* 32 */ SyscallDesc("unused#32", unimplementedFunc),
111    /* 33 */ SyscallDesc("access", unimplementedFunc),
112    /* 34 */ SyscallDesc("nice", unimplementedFunc),
113    /* 35 */ SyscallDesc("unused#35", unimplementedFunc),
114    /* 36 */ SyscallDesc("sync", unimplementedFunc),
115    /* 37 */ SyscallDesc("kill", ignoreFunc),
116    /* 38 */ SyscallDesc("rename", renameFunc),
117    /* 39 */ SyscallDesc("mkdir", mkdirFunc),
118    /* 40 */ SyscallDesc("rmdir", unimplementedFunc),
119    /* 41 */ SyscallDesc("dup", dupFunc),
120    /* 42 */ SyscallDesc("pipe", pipePseudoFunc),
121    /* 43 */ SyscallDesc("times", timesFunc<ArmLinux>),
122    /* 44 */ SyscallDesc("unused#44", unimplementedFunc),
123    /* 45 */ SyscallDesc("brk", brkFunc),
124    /* 46 */ SyscallDesc("setgid", unimplementedFunc),
125    /* 47 */ SyscallDesc("getgid", getgidFunc),
126    /* 48 */ SyscallDesc("unused#48", unimplementedFunc),
127    /* 49 */ SyscallDesc("geteuid", geteuidFunc),
128    /* 50 */ SyscallDesc("getegid", getegidFunc),
129    /* 51 */ SyscallDesc("acct", unimplementedFunc),
130    /* 52 */ SyscallDesc("umount2", unimplementedFunc),
131    /* 53 */ SyscallDesc("unused#53", unimplementedFunc),
132    /* 54 */ SyscallDesc("ioctl", ioctlFunc<ArmLinux>),
133    /* 55 */ SyscallDesc("fcntl", fcntlFunc),
134    /* 56 */ SyscallDesc("unused#56", unimplementedFunc),
135    /* 57 */ SyscallDesc("setpgid", unimplementedFunc),
136    /* 58 */ SyscallDesc("unused#58", unimplementedFunc),
137    /* 59 */ SyscallDesc("unused#59", unimplementedFunc),
138    /* 60 */ SyscallDesc("umask", unimplementedFunc),
139    /* 61 */ SyscallDesc("chroot", unimplementedFunc),
140    /* 62 */ SyscallDesc("ustat", unimplementedFunc),
141    /* 63 */ SyscallDesc("dup2", unimplementedFunc),
142    /* 64 */ SyscallDesc("getppid", getppidFunc),
143    /* 65 */ SyscallDesc("getpgrp", unimplementedFunc),
144    /* 66 */ SyscallDesc("setsid", unimplementedFunc),
145    /* 67 */ SyscallDesc("sigaction",unimplementedFunc),
146    /* 68 */ SyscallDesc("unused#68", unimplementedFunc),
147    /* 69 */ SyscallDesc("unused#69", unimplementedFunc),
148    /* 70 */ SyscallDesc("setreuid", unimplementedFunc),
149    /* 71 */ SyscallDesc("setregid", unimplementedFunc),
150    /* 72 */ SyscallDesc("sigsuspend", unimplementedFunc),
151    /* 73 */ SyscallDesc("sigpending", unimplementedFunc),
152    /* 74 */ SyscallDesc("sethostname", ignoreFunc),
153    /* 75 */ SyscallDesc("setrlimit", ignoreFunc),
154    /* 76 */ SyscallDesc("getrlimit", getrlimitFunc<ArmLinux>),
155    /* 77 */ SyscallDesc("getrusage", getrusageFunc<ArmLinux>),
156    /* 78 */ SyscallDesc("gettimeofday", gettimeofdayFunc<ArmLinux>),
157    /* 79 */ SyscallDesc("settimeofday", unimplementedFunc),
158    /* 80 */ SyscallDesc("getgroups", unimplementedFunc),
159    /* 81 */ SyscallDesc("setgroups", unimplementedFunc),
160    /* 82 */ SyscallDesc("reserved#82", unimplementedFunc),
161    /* 83 */ SyscallDesc("symlink", unimplementedFunc),
162    /* 84 */ SyscallDesc("unused#84", unimplementedFunc),
163    /* 85 */ SyscallDesc("readlink", readlinkFunc),
164    /* 86 */ SyscallDesc("uselib", unimplementedFunc),
165    /* 87 */ SyscallDesc("swapon", unimplementedFunc),
166    /* 88 */ SyscallDesc("reboot", unimplementedFunc),
167    /* 89 */ SyscallDesc("readdir", unimplementedFunc),
168    /* 90 */ SyscallDesc("mmap", mmapFunc<ArmLinux>),
169    /* 91 */ SyscallDesc("munmap", munmapFunc),
170    /* 92 */ SyscallDesc("truncate", truncateFunc),
171    /* 93 */ SyscallDesc("ftruncate", ftruncateFunc),
172    /* 94 */ SyscallDesc("fchmod", unimplementedFunc),
173    /* 95 */ SyscallDesc("fchown", unimplementedFunc),
174    /* 96 */ SyscallDesc("getpriority", unimplementedFunc),
175    /* 97 */ SyscallDesc("setpriority", unimplementedFunc),
176    /* 98 */ SyscallDesc("unused#98", unimplementedFunc),
177    /* 99 */ SyscallDesc("statfs", unimplementedFunc),
178    /* 100 */ SyscallDesc("fstatfs", unimplementedFunc),
179    /* 101 */ SyscallDesc("unused#101", unimplementedFunc),
180    /* 102 */ SyscallDesc("socketcall", unimplementedFunc),
181    /* 103 */ SyscallDesc("syslog", unimplementedFunc),
182    /* 104 */ SyscallDesc("setitimer", unimplementedFunc),
183    /* 105 */ SyscallDesc("getitimer", unimplementedFunc),
184    /* 106 */ SyscallDesc("stat",  statFunc<ArmLinux>),
185    /* 107 */ SyscallDesc("lstat", unimplementedFunc),
186    /* 108 */ SyscallDesc("fstat", fstatFunc<ArmLinux>),
187    /* 109 */ SyscallDesc("unused#109", unimplementedFunc),
188    /* 110 */ SyscallDesc("unused#101", unimplementedFunc),
189    /* 111 */ SyscallDesc("vhangup", unimplementedFunc),
190    /* 112 */ SyscallDesc("unused#112", unimplementedFunc),
191    /* 113 */ SyscallDesc("syscall", unimplementedFunc),
192    /* 114 */ SyscallDesc("wait4", unimplementedFunc),
193    /* 115 */ SyscallDesc("swapoff", unimplementedFunc),
194    /* 116 */ SyscallDesc("sysinfo", sysinfoFunc<ArmLinux>),
195    /* 117 */ SyscallDesc("ipc", unimplementedFunc),
196    /* 118 */ SyscallDesc("fsync", unimplementedFunc),
197    /* 119 */ SyscallDesc("sigreturn", unimplementedFunc),
198    /* 120 */ SyscallDesc("clone", cloneFunc),
199    /* 121 */ SyscallDesc("setdomainname", unimplementedFunc),
200    /* 122 */ SyscallDesc("uname", unameFunc),
201    /* 123 */ SyscallDesc("unused#123", unimplementedFunc),
202    /* 124 */ SyscallDesc("adjtimex", unimplementedFunc),
203    /* 125 */ SyscallDesc("mprotect", ignoreFunc),
204    /* 126 */ SyscallDesc("sigprocmask", unimplementedFunc),
205    /* 127 */ SyscallDesc("unused#127", unimplementedFunc),
206    /* 128 */ SyscallDesc("init_module", unimplementedFunc),
207    /* 129 */ SyscallDesc("delete_module", unimplementedFunc),
208    /* 130 */ SyscallDesc("unused#130", unimplementedFunc),
209    /* 131 */ SyscallDesc("quotactl", unimplementedFunc),
210    /* 132 */ SyscallDesc("getpgid", unimplementedFunc),
211    /* 133 */ SyscallDesc("fchdir", unimplementedFunc),
212    /* 134 */ SyscallDesc("bdflush", unimplementedFunc),
213    /* 135 */ SyscallDesc("sysfs", unimplementedFunc),
214    /* 136 */ SyscallDesc("personality", unimplementedFunc),
215    /* 137 */ SyscallDesc("reserved#138", unimplementedFunc),
216    /* 138 */ SyscallDesc("setfsuid", unimplementedFunc),
217    /* 139 */ SyscallDesc("setfsgid", unimplementedFunc),
218    /* 140 */ SyscallDesc("llseek", _llseekFunc),
219    /* 141 */ SyscallDesc("getdents", unimplementedFunc),
220    /* 142 */ SyscallDesc("newselect", unimplementedFunc),
221    /* 143 */ SyscallDesc("flock", unimplementedFunc),
222    /* 144 */ SyscallDesc("msync", unimplementedFunc),
223    /* 145 */ SyscallDesc("readv", unimplementedFunc),
224    /* 146 */ SyscallDesc("writev", writevFunc<ArmLinux>),
225    /* 147 */ SyscallDesc("getsid", unimplementedFunc),
226    /* 148 */ SyscallDesc("fdatasync", unimplementedFunc),
227    /* 149 */ SyscallDesc("sysctl", unimplementedFunc),
228    /* 150 */ SyscallDesc("mlock", unimplementedFunc),
229    /* 151 */ SyscallDesc("munlock", unimplementedFunc),
230    /* 152 */ SyscallDesc("mlockall", unimplementedFunc),
231    /* 153 */ SyscallDesc("munlockall", unimplementedFunc),
232    /* 154 */ SyscallDesc("sched_setparam", unimplementedFunc),
233    /* 155 */ SyscallDesc("sched_getparam", unimplementedFunc),
234    /* 156 */ SyscallDesc("sched_setscheduler", unimplementedFunc),
235    /* 157 */ SyscallDesc("sched_getscheduler", unimplementedFunc),
236    /* 158 */ SyscallDesc("sched_yield", unimplementedFunc),
237    /* 159 */ SyscallDesc("sched_get_priority_max", unimplementedFunc),
238    /* 160 */ SyscallDesc("sched_get_priority_min", unimplementedFunc),
239    /* 161 */ SyscallDesc("sched_rr_get_interval", unimplementedFunc),
240    /* 162 */ SyscallDesc("nanosleep", ignoreWarnOnceFunc),
241    /* 163 */ SyscallDesc("mremap", mremapFunc<ArmLinux>), // ARM-specific
242    /* 164 */ SyscallDesc("setresuid", unimplementedFunc),
243    /* 165 */ SyscallDesc("getresuid", unimplementedFunc),
244    /* 166 */ SyscallDesc("unused#166", unimplementedFunc),
245    /* 167 */ SyscallDesc("unused#167", unimplementedFunc),
246    /* 168 */ SyscallDesc("poll", unimplementedFunc),
247    /* 169 */ SyscallDesc("nfsservctl", unimplementedFunc),
248    /* 170 */ SyscallDesc("setresgid", unimplementedFunc),
249    /* 171 */ SyscallDesc("getresgid", unimplementedFunc),
250    /* 172 */ SyscallDesc("prctl", unimplementedFunc),
251    /* 173 */ SyscallDesc("rt_sigreturn", unimplementedFunc),
252    /* 174 */ SyscallDesc("rt_sigaction", ignoreWarnOnceFunc),
253    /* 175 */ SyscallDesc("rt_sigprocmask", ignoreWarnOnceFunc),
254    /* 176 */ SyscallDesc("rt_sigpending", unimplementedFunc),
255    /* 177 */ SyscallDesc("rt_sigtimedwait", unimplementedFunc),
256    /* 178 */ SyscallDesc("rt_sigqueueinfo", ignoreFunc),
257    /* 179 */ SyscallDesc("rt_sigsuspend", unimplementedFunc),
258    /* 180 */ SyscallDesc("pread64", unimplementedFunc),
259    /* 181 */ SyscallDesc("pwrite64", unimplementedFunc),
260    /* 182 */ SyscallDesc("chown", unimplementedFunc),
261    /* 183 */ SyscallDesc("getcwd", getcwdFunc),
262    /* 184 */ SyscallDesc("capget", unimplementedFunc),
263    /* 185 */ SyscallDesc("capset", unimplementedFunc),
264    /* 186 */ SyscallDesc("sigaltstack", unimplementedFunc),
265    /* 187 */ SyscallDesc("sendfile", unimplementedFunc),
266    /* 188 */ SyscallDesc("unused#188", unimplementedFunc),
267    /* 189 */ SyscallDesc("unused#189", unimplementedFunc),
268    /* 190 */ SyscallDesc("vfork", unimplementedFunc),
269    /* 191 */ SyscallDesc("getrlimit", getrlimitFunc<ArmLinux>),
270    /* 192 */ SyscallDesc("mmap2", mmapFunc<ArmLinux>),
271    /* 193 */ SyscallDesc("truncate64", unimplementedFunc),
272    /* 194 */ SyscallDesc("ftruncate64", ftruncate64Func),
273    /* 195 */ SyscallDesc("stat64", stat64Func<ArmLinux>),
274    /* 196 */ SyscallDesc("lstat64", lstat64Func<ArmLinux>),
275    /* 197 */ SyscallDesc("fstat64", fstat64Func<ArmLinux>),
276    /* 198 */ SyscallDesc("lchown", unimplementedFunc),
277    /* 199 */ SyscallDesc("getuid", getuidFunc),
278    /* 200 */ SyscallDesc("getgid", getgidFunc),
279    /* 201 */ SyscallDesc("geteuid", geteuidFunc),
280    /* 202 */ SyscallDesc("getegid", getegidFunc),
281    /* 203 */ SyscallDesc("setreuid", unimplementedFunc),
282    /* 204 */ SyscallDesc("setregid", unimplementedFunc),
283    /* 205 */ SyscallDesc("getgroups", unimplementedFunc),
284    /* 206 */ SyscallDesc("setgroups", unimplementedFunc),
285    /* 207 */ SyscallDesc("fchown", unimplementedFunc),
286    /* 208 */ SyscallDesc("setresuid", unimplementedFunc),
287    /* 209 */ SyscallDesc("getresuid", unimplementedFunc),
288    /* 210 */ SyscallDesc("setresgid", unimplementedFunc),
289    /* 211 */ SyscallDesc("getresgid", unimplementedFunc),
290    /* 212 */ SyscallDesc("chown", unimplementedFunc),
291    /* 213 */ SyscallDesc("setuid", unimplementedFunc),
292    /* 214 */ SyscallDesc("setgid", unimplementedFunc),
293    /* 215 */ SyscallDesc("setfsuid", unimplementedFunc),
294    /* 216 */ SyscallDesc("setfsgid", unimplementedFunc),
295    /* 217 */ SyscallDesc("getdents64", unimplementedFunc),
296    /* 218 */ SyscallDesc("pivot_root", unimplementedFunc),
297    /* 219 */ SyscallDesc("mincore", unimplementedFunc),
298    /* 220 */ SyscallDesc("madvise", unimplementedFunc),
299    /* 221 */ SyscallDesc("fcntl64", fcntl64Func),
300    /* 222 */ SyscallDesc("unused#222", unimplementedFunc),
301    /* 223 */ SyscallDesc("unknown#223", unimplementedFunc),
302    /* 224 */ SyscallDesc("gettid", unimplementedFunc),
303    /* 225 */ SyscallDesc("readahead", unimplementedFunc),
304    /* 226 */ SyscallDesc("setxattr", unimplementedFunc),
305    /* 227 */ SyscallDesc("lsetxattr", unimplementedFunc),
306    /* 228 */ SyscallDesc("fsetxattr", unimplementedFunc),
307    /* 229 */ SyscallDesc("getxattr", unimplementedFunc),
308    /* 230 */ SyscallDesc("lgetxattr", unimplementedFunc),
309    /* 231 */ SyscallDesc("fgetxattr", unimplementedFunc),
310    /* 232 */ SyscallDesc("listxattr", unimplementedFunc),
311    /* 233 */ SyscallDesc("llistxattr", unimplementedFunc),
312    /* 234 */ SyscallDesc("flistxattr", unimplementedFunc),
313    /* 235 */ SyscallDesc("removexattr", unimplementedFunc),
314    /* 236 */ SyscallDesc("lremovexattr", unimplementedFunc),
315    /* 237 */ SyscallDesc("fremovexattr", unimplementedFunc),
316    /* 238 */ SyscallDesc("tkill", unimplementedFunc),
317    /* 239 */ SyscallDesc("sendfile64", unimplementedFunc),
318    /* 240 */ SyscallDesc("futex", ignoreWarnOnceFunc),
319    /* 241 */ SyscallDesc("sched_setaffinity", unimplementedFunc),
320    /* 242 */ SyscallDesc("sched_getaffinity", unimplementedFunc),
321    /* 243 */ SyscallDesc("io_setup", unimplementedFunc),
322    /* 244 */ SyscallDesc("io_destory", unimplementedFunc),
323    /* 245 */ SyscallDesc("io_getevents", unimplementedFunc),
324    /* 246 */ SyscallDesc("io_submit", unimplementedFunc),
325    /* 247 */ SyscallDesc("io_cancel", unimplementedFunc),
326    /* 248 */ SyscallDesc("exit_group", exitGroupFunc),
327    /* 249 */ SyscallDesc("lookup_dcookie", unimplementedFunc),
328    /* 250 */ SyscallDesc("epoll_create", unimplementedFunc),
329    /* 251 */ SyscallDesc("epoll_ctl", unimplementedFunc),
330    /* 252 */ SyscallDesc("epoll_wait", unimplementedFunc),
331    /* 253 */ SyscallDesc("remap_file_pages", unimplementedFunc),
332    /* 254 */ SyscallDesc("unused#254", unimplementedFunc),
333    /* 255 */ SyscallDesc("unused#255", unimplementedFunc),
334    /* 256 */ SyscallDesc("set_tid_address", unimplementedFunc),
335    /* 257 */ SyscallDesc("timer_create", unimplementedFunc),
336    /* 258 */ SyscallDesc("timer_settime", unimplementedFunc),
337    /* 259 */ SyscallDesc("timer_gettime", unimplementedFunc),
338    /* 260 */ SyscallDesc("timer_getoverrun", unimplementedFunc),
339    /* 261 */ SyscallDesc("timer_delete", unimplementedFunc),
340    /* 262 */ SyscallDesc("clock_settime", unimplementedFunc),
341    /* 263 */ SyscallDesc("clock_gettime", unimplementedFunc),
342    /* 264 */ SyscallDesc("clock_getres", unimplementedFunc),
343    /* 265 */ SyscallDesc("clock_nanosleep", unimplementedFunc),
344    /* 266 */ SyscallDesc("statfs64", unimplementedFunc),
345    /* 267 */ SyscallDesc("fstatfs64", unimplementedFunc),
346    /* 268 */ SyscallDesc("tgkill", unimplementedFunc),
347    /* 269 */ SyscallDesc("utimes", unimplementedFunc),
348    /* 270 */ SyscallDesc("arm_fadvise64_64", unimplementedFunc),
349    /* 271 */ SyscallDesc("pciconfig_iobase", unimplementedFunc),
350    /* 272 */ SyscallDesc("pciconfig_read", unimplementedFunc),
351    /* 273 */ SyscallDesc("pciconfig_write", unimplementedFunc),
352    /* 274 */ SyscallDesc("mq_open", unimplementedFunc),
353    /* 275 */ SyscallDesc("mq_unlink", unimplementedFunc),
354    /* 276 */ SyscallDesc("mq_timedsend", unimplementedFunc),
355    /* 277 */ SyscallDesc("mq_timedreceive", unimplementedFunc),
356    /* 278 */ SyscallDesc("mq_notify", unimplementedFunc),
357    /* 279 */ SyscallDesc("mq_getsetattr", unimplementedFunc),
358    /* 280 */ SyscallDesc("waitid", unimplementedFunc),
359    /* 281 */ SyscallDesc("socket", unimplementedFunc),
360    /* 282 */ SyscallDesc("bind", unimplementedFunc),
361    /* 283 */ SyscallDesc("connect", unimplementedFunc),
362    /* 284 */ SyscallDesc("listen", unimplementedFunc),
363    /* 285 */ SyscallDesc("accept", unimplementedFunc),
364    /* 286 */ SyscallDesc("getsockname", unimplementedFunc),
365    /* 287 */ SyscallDesc("getpeername", unimplementedFunc),
366    /* 288 */ SyscallDesc("socketpair", unimplementedFunc),
367    /* 289 */ SyscallDesc("send", unimplementedFunc),
368    /* 290 */ SyscallDesc("sendto", unimplementedFunc),
369    /* 291 */ SyscallDesc("recv", unimplementedFunc),
370    /* 292 */ SyscallDesc("recvfrom", unimplementedFunc),
371    /* 293 */ SyscallDesc("shutdown", unimplementedFunc),
372    /* 294 */ SyscallDesc("setsockopt", unimplementedFunc),
373    /* 295 */ SyscallDesc("getsockopt", unimplementedFunc),
374    /* 296 */ SyscallDesc("sendmsg", unimplementedFunc),
375    /* 297 */ SyscallDesc("rcvmsg", unimplementedFunc),
376    /* 298 */ SyscallDesc("semop", unimplementedFunc),
377    /* 299 */ SyscallDesc("semget", unimplementedFunc),
378    /* 300 */ SyscallDesc("semctl", unimplementedFunc),
379    /* 301 */ SyscallDesc("msgsend", unimplementedFunc),
380    /* 302 */ SyscallDesc("msgrcv", unimplementedFunc),
381    /* 303 */ SyscallDesc("msgget", unimplementedFunc),
382    /* 304 */ SyscallDesc("msgctl", unimplementedFunc),
383    /* 305 */ SyscallDesc("shmat", unimplementedFunc),
384    /* 306 */ SyscallDesc("shmdt", unimplementedFunc),
385    /* 307 */ SyscallDesc("shmget", unimplementedFunc),
386    /* 308 */ SyscallDesc("shmctl", unimplementedFunc),
387    /* 309 */ SyscallDesc("add_key", unimplementedFunc),
388    /* 310 */ SyscallDesc("request_key", unimplementedFunc),
389    /* 311 */ SyscallDesc("keyctl", unimplementedFunc),
390    /* 312 */ SyscallDesc("semtimedop", unimplementedFunc),
391    /* 313 */ SyscallDesc("unused#313", unimplementedFunc),
392    /* 314 */ SyscallDesc("ioprio_set", unimplementedFunc),
393    /* 315 */ SyscallDesc("ioprio_get", unimplementedFunc),
394    /* 316 */ SyscallDesc("inotify_init", unimplementedFunc),
395    /* 317 */ SyscallDesc("inotify_add_watch", unimplementedFunc),
396    /* 318 */ SyscallDesc("inotify_rm_watch", unimplementedFunc),
397    /* 319 */ SyscallDesc("mbind", unimplementedFunc),
398    /* 320 */ SyscallDesc("get_mempolicy", unimplementedFunc),
399    /* 321 */ SyscallDesc("set_mempolicy", unimplementedFunc),
400    /* 322 */ SyscallDesc("openat", unimplementedFunc),
401    /* 323 */ SyscallDesc("mkdirat", unimplementedFunc),
402    /* 324 */ SyscallDesc("mknodat", unimplementedFunc),
403    /* 325 */ SyscallDesc("fchownat", unimplementedFunc),
404    /* 326 */ SyscallDesc("futimesat", unimplementedFunc),
405    /* 327 */ SyscallDesc("fstatat64", unimplementedFunc),
406    /* 328 */ SyscallDesc("unlinkat", unimplementedFunc),
407    /* 329 */ SyscallDesc("renameat", unimplementedFunc),
408    /* 330 */ SyscallDesc("linkat", unimplementedFunc),
409    /* 331 */ SyscallDesc("symlinkat", unimplementedFunc),
410    /* 332 */ SyscallDesc("readlinkat", unimplementedFunc),
411    /* 333 */ SyscallDesc("fchmodat", unimplementedFunc),
412    /* 334 */ SyscallDesc("faccessat", unimplementedFunc),
413    /* 335 */ SyscallDesc("pselect6", unimplementedFunc),
414    /* 336 */ SyscallDesc("ppoll", unimplementedFunc),
415    /* 337 */ SyscallDesc("unshare", unimplementedFunc),
416    /* 338 */ SyscallDesc("set_robust_list", unimplementedFunc),
417    /* 339 */ SyscallDesc("get_robust_list", unimplementedFunc),
418    /* 340 */ SyscallDesc("splice", unimplementedFunc),
419    /* 341 */ SyscallDesc("arm_sync_file_range", unimplementedFunc),
420    /* 342 */ SyscallDesc("tee", unimplementedFunc),
421    /* 343 */ SyscallDesc("vmsplice", unimplementedFunc),
422    /* 344 */ SyscallDesc("move_pages", unimplementedFunc),
423    /* 345 */ SyscallDesc("getcpu", unimplementedFunc),
424    /* 346 */ SyscallDesc("epoll_pwait", unimplementedFunc),
425    /* 347 */ SyscallDesc("sys_kexec_load", unimplementedFunc),
426    /* 348 */ SyscallDesc("sys_utimensat", unimplementedFunc),
427    /* 349 */ SyscallDesc("sys_signalfd", unimplementedFunc),
428    /* 350 */ SyscallDesc("sys_timerfd_create", unimplementedFunc),
429    /* 351 */ SyscallDesc("sys_eventfd", unimplementedFunc),
430    /* 352 */ SyscallDesc("sys_fallocate", unimplementedFunc),
431    /* 353 */ SyscallDesc("sys_timerfd_settime", unimplementedFunc),
432    /* 354 */ SyscallDesc("sys_timerfd_gettime", unimplementedFunc),
433    /* 355 */ SyscallDesc("sys_signalfd4", unimplementedFunc),
434    /* 356 */ SyscallDesc("sys_eventfd2", unimplementedFunc),
435    /* 357 */ SyscallDesc("sys_epoll_create1", unimplementedFunc),
436    /* 358 */ SyscallDesc("sys_dup3", unimplementedFunc),
437    /* 359 */ SyscallDesc("sys_pipe2", unimplementedFunc),
438    /* 360 */ SyscallDesc("sys_inotify_init1", unimplementedFunc),
439    /* 361 */ SyscallDesc("sys_preadv", unimplementedFunc),
440    /* 362 */ SyscallDesc("sys_pwritev", unimplementedFunc),
441    /* 363 */ SyscallDesc("sys_rt_tgsigqueueinfo", unimplementedFunc),
442    /* 364 */ SyscallDesc("sys_perf_event_open", unimplementedFunc),
443    /* 365 */ SyscallDesc("sys_recvmmsg", unimplementedFunc),
444
445};
446
447/// Target set_tls() handler.
448static SyscallReturn
449setTLSFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
450          ThreadContext *tc)
451{
452    int index = 0;
453    uint32_t tlsPtr = process->getSyscallArg(tc, index);
454
455    tc->getMemProxy().writeBlob(ArmLinuxProcess::commPage + 0x0ff0,
456                                (uint8_t *)&tlsPtr, sizeof(tlsPtr));
457    tc->setMiscReg(MISCREG_TPIDRURO,tlsPtr);
458    return 0;
459}
460
461SyscallDesc ArmLinuxProcess::privSyscallDescs[] = {
462    /*  1 */ SyscallDesc("breakpoint", unimplementedFunc),
463    /*  2 */ SyscallDesc("cacheflush", unimplementedFunc),
464    /*  3 */ SyscallDesc("usr26", unimplementedFunc),
465    /*  4 */ SyscallDesc("usr32", unimplementedFunc),
466    /*  5 */ SyscallDesc("set_tls", setTLSFunc)
467};
468
469ArmLinuxProcess::ArmLinuxProcess(LiveProcessParams * params,
470        ObjectFile *objFile, ObjectFile::Arch _arch)
471    : ArmLiveProcess(params, objFile, _arch),
472     Num_Syscall_Descs(sizeof(syscallDescs) / sizeof(SyscallDesc)),
473     Num_Priv_Syscall_Descs(sizeof(privSyscallDescs) / sizeof(SyscallDesc))
474{ }
475
476const Addr ArmLinuxProcess::commPage = 0xffff0000;
477
478SyscallDesc*
479ArmLinuxProcess::getDesc(int callnum)
480{
481    // Angel SWI syscalls are unsupported in this release
482    if (callnum == 0x123456) {
483        panic("Attempt to execute an ANGEL_SWI system call (newlib-related)");
484    } else if ((callnum & 0x00f00000) == 0x00900000 ||
485            (callnum & 0xf0000) == 0xf0000) {
486        callnum &= 0x000fffff;
487        if ((callnum & 0x0f0000) == 0xf0000) {
488            callnum -= 0x0f0001;
489            if (callnum < 0 || callnum > Num_Priv_Syscall_Descs)
490                return NULL;
491            return &privSyscallDescs[callnum];
492        }
493    }
494    // Linux syscalls have to strip off the 0x00900000
495
496    if (callnum < 0 || callnum > Num_Syscall_Descs)
497        return NULL;
498
499    return &syscallDescs[callnum];
500}
501
502void
503ArmLinuxProcess::initState()
504{
505    ArmLiveProcess::initState();
506    allocateMem(commPage, PageBytes);
507    ThreadContext *tc = system->getThreadContext(contextIds[0]);
508
509    uint8_t swiNeg1[] = {
510        0xff, 0xff, 0xff, 0xef  // swi -1
511    };
512
513    // Fill this page with swi -1 so we'll no if we land in it somewhere.
514    for (Addr addr = 0; addr < PageBytes; addr += sizeof(swiNeg1)) {
515        tc->getMemProxy().writeBlob(commPage + addr,
516                                    swiNeg1, sizeof(swiNeg1));
517    }
518
519    uint8_t memory_barrier[] =
520    {
521        0x5f, 0xf0, 0x7f, 0xf5, // dmb
522        0x0e, 0xf0, 0xa0, 0xe1  // return
523    };
524    tc->getMemProxy().writeBlob(commPage + 0x0fa0, memory_barrier,
525                                sizeof(memory_barrier));
526
527    uint8_t cmpxchg[] =
528    {
529        0x9f, 0x3f, 0x92, 0xe1,  // ldrex    r3, [r2]
530        0x00, 0x30, 0x53, 0xe0,  // subs     r3, r3, r0
531        0x91, 0x3f, 0x82, 0x01,  // strexeq  r3, r1, [r2]
532        0x01, 0x00, 0x33, 0x03,  // teqeq    r3, #1
533        0xfa, 0xff, 0xff, 0x0a,  // beq 1b
534        0x00, 0x00, 0x73, 0xe2,  // rsbs r0, r3, #0
535        0x5f, 0xf0, 0x7f, 0xf5,  // dmb
536        0x0e, 0xf0, 0xa0, 0xe1   // return
537    };
538    tc->getMemProxy().writeBlob(commPage + 0x0fc0, cmpxchg, sizeof(cmpxchg));
539
540    uint8_t get_tls[] =
541    {
542                                // read user read-only thread id register
543        0x70, 0x0f, 0x1d, 0xee, // mrc p15, 0, r0, c13, c0, 3
544        0x0e, 0xf0, 0xa0, 0xe1  // return
545    };
546    tc->getMemProxy().writeBlob(commPage + 0x0fe0, get_tls, sizeof(get_tls));
547}
548
549ArmISA::IntReg
550ArmLinuxProcess::getSyscallArg(ThreadContext *tc, int &i)
551{
552    // Linux apparently allows more parameter than the ABI says it should.
553    // This limit may need to be increased even further.
554    assert(i < 6);
555    return tc->readIntReg(ArgumentReg0 + i++);
556}
557
558void
559ArmLinuxProcess::setSyscallArg(ThreadContext *tc, int i, ArmISA::IntReg val)
560{
561    // Linux apparently allows more parameter than the ABI says it should.
562    // This limit may need to be increased even further.
563    assert(i < 6);
564    tc->setIntReg(ArgumentReg0 + i, val);
565}
566