1 2 /*--------------------------------------------------------------------*/ 3 /*--- Platform-specific syscalls stuff. syswrap-s390x-linux.c ---*/ 4 /*--------------------------------------------------------------------*/ 5 6 /* 7 This file is part of Valgrind, a dynamic binary instrumentation 8 framework. 9 10 Copyright IBM Corp. 2010-2012 11 12 This program is free software; you can redistribute it and/or 13 modify it under the terms of the GNU General Public License as 14 published by the Free Software Foundation; either version 2 of the 15 License, or (at your option) any later version. 16 17 This program is distributed in the hope that it will be useful, but 18 WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 General Public License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with this program; if not, write to the Free Software 24 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 25 02111-1307, USA. 26 27 The GNU General Public License is contained in the file COPYING. 28 */ 29 30 /* Contributed by Christian Borntraeger */ 31 32 #if defined(VGP_s390x_linux) 33 34 #include "pub_core_basics.h" 35 #include "pub_core_vki.h" 36 #include "pub_core_vkiscnums.h" 37 #include "pub_core_libcsetjmp.h" // to keep _threadstate.h happy 38 #include "pub_core_threadstate.h" 39 #include "pub_core_aspacemgr.h" 40 #include "pub_core_debuglog.h" 41 #include "pub_core_libcbase.h" 42 #include "pub_core_libcassert.h" 43 #include "pub_core_libcprint.h" 44 #include "pub_core_libcproc.h" 45 #include "pub_core_libcsignal.h" 46 #include "pub_core_mallocfree.h" 47 #include "pub_core_options.h" 48 #include "pub_core_scheduler.h" 49 #include "pub_core_sigframe.h" // For VG_(sigframe_destroy)() 50 #include "pub_core_signals.h" 51 #include "pub_core_syscall.h" 52 #include "pub_core_syswrap.h" 53 #include "pub_core_tooliface.h" 54 #include "pub_core_stacks.h" // VG_(register_stack) 55 56 #include "priv_types_n_macros.h" 57 #include "priv_syswrap-generic.h" /* for decls of generic wrappers */ 58 #include "priv_syswrap-linux.h" /* for decls of linux-ish wrappers */ 59 #include "priv_syswrap-linux-variants.h" /* decls of linux variant wrappers */ 60 #include "priv_syswrap-main.h" 61 62 63 /* --------------------------------------------------------------------- 64 clone() handling 65 ------------------------------------------------------------------ */ 66 67 /* Call f(arg1), but first switch stacks, using 'stack' as the new 68 stack, and use 'retaddr' as f's return-to address. Also, clear all 69 the integer registers before entering f. 70 Thought: Why are we clearing the GPRs ? The callee pointed to by f 71 is a regular C function which will play by the ABI rules. So there is 72 no need to zero out the GPRs. If we assumed that f accesses registers at 73 will, then it would make sense to create a defined register state. 74 But then, why only for the GPRs and not the FPRs ? */ 75 __attribute__((noreturn)) 76 void ML_(call_on_new_stack_0_1) ( Addr stack, 77 Addr retaddr, 78 void (*f)(Word), 79 Word arg1 ); 80 /* Upon entering this function we have the following setup: 81 r2 = stack 82 r3 = retaddr 83 r4 = f_desc 84 r5 = arg1 85 */ 86 asm( 87 ".text\n" 88 ".align 4\n" 89 ".globl vgModuleLocal_call_on_new_stack_0_1\n" 90 ".type vgModuleLocal_call_on_new_stack_0_1, @function\n" 91 "vgModuleLocal_call_on_new_stack_0_1:\n" 92 " lgr %r15,%r2\n" // stack to r15 93 " lgr %r14,%r3\n" // retaddr to r14 94 " lgr %r2,%r5\n" // arg1 to r2 95 // zero all gprs to get a defined state 96 " lghi %r0,0\n" 97 " lghi %r1,0\n" 98 // r2 holds the argument for the callee 99 " lghi %r3,0\n" 100 // r4 holds the callee address 101 " lghi %r5,0\n" 102 " lghi %r6,0\n" 103 " lghi %r7,0\n" 104 " lghi %r8,0\n" 105 " lghi %r9,0\n" 106 " lghi %r10,0\n" 107 " lghi %r11,0\n" 108 " lghi %r12,0\n" 109 " lghi %r13,0\n" 110 // r14 holds the return address for the callee 111 // r15 is the stack pointer 112 " br %r4\n" // jump to f 113 ".previous\n" 114 ); 115 116 /* 117 Perform a clone system call. clone is strange because it has 118 fork()-like return-twice semantics, so it needs special 119 handling here. 120 121 Upon entry, we have: 122 void* child_stack in r2 123 long flags in r3 124 int* parent_tid in r4 125 int* child_tid in r5 126 int* child_tid in r6 127 Word (*fn)(void *) 160(r15) 128 void *arg 168(r15) 129 130 System call requires: 131 void* child_stack in r2 (sc arg1) 132 long flags in r3 (sc arg2) 133 int* parent_tid in r4 (sc arg3) 134 int* child_tid in r5 (sc arg4) 135 void* tlsaddr in r6 (sc arg5) 136 137 Returns a ULong encoded as: top half is %cr following syscall, 138 low half is syscall return value (r3). 139 */ 140 #define __NR_CLONE VG_STRINGIFY(__NR_clone) 141 #define __NR_EXIT VG_STRINGIFY(__NR_exit) 142 143 extern 144 ULong do_syscall_clone_s390x_linux ( void *stack, 145 ULong flags, 146 Int *child_tid, 147 Int *parent_tid, 148 Addr tlsaddr, 149 Word (*fn)(void *), 150 void *arg); 151 asm( 152 " .text\n" 153 " .align 4\n" 154 ".globl do_syscall_clone_s390x_linux\n" 155 "do_syscall_clone_s390x_linux:\n" 156 " lg %r1, 160(%r15)\n" // save fn from parent stack into r1 157 " lg %r0, 168(%r15)\n" // save arg from parent stack into r0 158 " aghi %r2, -160\n" // create stack frame for child 159 // all syscall parameters are already in place (r2-r6) 160 " svc " __NR_CLONE"\n" // clone() 161 " ltgr %r2,%r2\n" // child if retval == 0 162 " jne 1f\n" 163 164 // CHILD - call thread function 165 " lgr %r2, %r0\n" // get arg from r0 166 " basr %r14,%r1\n" // call fn 167 168 // exit. The result is already in r2 169 " svc " __NR_EXIT"\n" 170 171 // Exit returned?! 172 " j +2\n" 173 174 "1:\n" // PARENT or ERROR 175 " br %r14\n" 176 ".previous\n" 177 ); 178 179 #undef __NR_CLONE 180 #undef __NR_EXIT 181 182 void VG_(cleanup_thread) ( ThreadArchState* arch ) 183 { 184 /* only used on x86 for descriptor tables */ 185 } 186 187 static void setup_child ( /*OUT*/ ThreadArchState *child, 188 /*IN*/ ThreadArchState *parent ) 189 { 190 /* We inherit our parent's guest state. */ 191 child->vex = parent->vex; 192 child->vex_shadow1 = parent->vex_shadow1; 193 child->vex_shadow2 = parent->vex_shadow2; 194 } 195 196 197 /* 198 When a client clones, we need to keep track of the new thread. This means: 199 1. allocate a ThreadId+ThreadState+stack for the the thread 200 201 2. initialize the thread's new VCPU state 202 203 3. create the thread using the same args as the client requested, 204 but using the scheduler entrypoint for IP, and a separate stack 205 for SP. 206 */ 207 static SysRes do_clone ( ThreadId ptid, 208 Addr sp, ULong flags, 209 Int *parent_tidptr, 210 Int *child_tidptr, 211 Addr tlsaddr) 212 { 213 static const Bool debug = False; 214 215 ThreadId ctid = VG_(alloc_ThreadState)(); 216 ThreadState* ptst = VG_(get_ThreadState)(ptid); 217 ThreadState* ctst = VG_(get_ThreadState)(ctid); 218 UWord* stack; 219 NSegment const* seg; 220 SysRes res; 221 ULong r2; 222 vki_sigset_t blockall, savedmask; 223 224 VG_(sigfillset)(&blockall); 225 226 vg_assert(VG_(is_running_thread)(ptid)); 227 vg_assert(VG_(is_valid_tid)(ctid)); 228 229 stack = (UWord*)ML_(allocstack)(ctid); 230 if (stack == NULL) { 231 res = VG_(mk_SysRes_Error)( VKI_ENOMEM ); 232 goto out; 233 } 234 235 /* Copy register state 236 237 Both parent and child return to the same place, and the code 238 following the clone syscall works out which is which, so we 239 don't need to worry about it. 240 241 The parent gets the child's new tid returned from clone, but the 242 child gets 0. 243 244 If the clone call specifies a NULL sp for the new thread, then 245 it actually gets a copy of the parent's sp. 246 */ 247 setup_child( &ctst->arch, &ptst->arch ); 248 249 /* Make sys_clone appear to have returned Success(0) in the 250 child. */ 251 ctst->arch.vex.guest_r2 = 0; 252 253 if (sp != 0) 254 ctst->arch.vex.guest_r15 = sp; 255 256 ctst->os_state.parent = ptid; 257 258 /* inherit signal mask */ 259 ctst->sig_mask = ptst->sig_mask; 260 ctst->tmp_sig_mask = ptst->sig_mask; 261 262 /* have the parents thread group */ 263 ctst->os_state.threadgroup = ptst->os_state.threadgroup; 264 265 /* We don't really know where the client stack is, because its 266 allocated by the client. The best we can do is look at the 267 memory mappings and try to derive some useful information. We 268 assume that esp starts near its highest possible value, and can 269 only go down to the start of the mmaped segment. */ 270 seg = VG_(am_find_nsegment)((Addr)sp); 271 if (seg && seg->kind != SkResvn) { 272 ctst->client_stack_highest_word = (Addr)VG_PGROUNDUP(sp); 273 ctst->client_stack_szB = ctst->client_stack_highest_word - seg->start; 274 275 VG_(register_stack)(seg->start, ctst->client_stack_highest_word); 276 277 if (debug) 278 VG_(printf)("tid %d: guessed client stack range %#lx-%#lx\n", 279 ctid, seg->start, VG_PGROUNDUP(sp)); 280 } else { 281 VG_(message)(Vg_UserMsg, 282 "!? New thread %d starts with SP(%#lx) unmapped\n", 283 ctid, sp); 284 ctst->client_stack_szB = 0; 285 } 286 287 /* Assume the clone will succeed, and tell any tool that wants to 288 know that this thread has come into existence. If the clone 289 fails, we'll send out a ll_exit notification for it at the out: 290 label below, to clean up. */ 291 vg_assert(VG_(owns_BigLock_LL)(ptid)); 292 VG_TRACK ( pre_thread_ll_create, ptid, ctid ); 293 294 if (flags & VKI_CLONE_SETTLS) { 295 if (debug) 296 VG_(printf)("clone child has SETTLS: tls at %#lx\n", tlsaddr); 297 ctst->arch.vex.guest_a0 = (UInt) (tlsaddr >> 32); 298 ctst->arch.vex.guest_a1 = (UInt) tlsaddr; 299 } 300 flags &= ~VKI_CLONE_SETTLS; 301 302 /* start the thread with everything blocked */ 303 VG_(sigprocmask)(VKI_SIG_SETMASK, &blockall, &savedmask); 304 305 /* Create the new thread */ 306 r2 = do_syscall_clone_s390x_linux( 307 stack, flags, child_tidptr, parent_tidptr, tlsaddr, 308 ML_(start_thread_NORETURN), &VG_(threads)[ctid]); 309 310 res = VG_(mk_SysRes_s390x_linux)( r2 ); 311 312 VG_(sigprocmask)(VKI_SIG_SETMASK, &savedmask, NULL); 313 314 out: 315 if (sr_isError(res)) { 316 /* clone failed */ 317 ctst->status = VgTs_Empty; 318 /* oops. Better tell the tool the thread exited in a hurry :-) */ 319 VG_TRACK( pre_thread_ll_exit, ctid ); 320 } 321 322 return res; 323 324 } 325 326 327 328 /* --------------------------------------------------------------------- 329 PRE/POST wrappers for s390x/Linux-specific syscalls 330 ------------------------------------------------------------------ */ 331 332 #define PRE(name) DEFN_PRE_TEMPLATE(s390x_linux, name) 333 #define POST(name) DEFN_POST_TEMPLATE(s390x_linux, name) 334 335 /* Add prototypes for the wrappers declared here, so that gcc doesn't 336 harass us for not having prototypes. Really this is a kludge -- 337 the right thing to do is to make these wrappers 'static' since they 338 aren't visible outside this file, but that requires even more macro 339 magic. */ 340 341 DECL_TEMPLATE(s390x_linux, sys_ptrace); 342 DECL_TEMPLATE(s390x_linux, sys_socketcall); 343 DECL_TEMPLATE(s390x_linux, sys_mmap); 344 DECL_TEMPLATE(s390x_linux, sys_ipc); 345 DECL_TEMPLATE(s390x_linux, sys_clone); 346 DECL_TEMPLATE(s390x_linux, sys_sigreturn); 347 DECL_TEMPLATE(s390x_linux, sys_rt_sigreturn); 348 DECL_TEMPLATE(s390x_linux, sys_fadvise64); 349 350 // PEEK TEXT,DATA and USER are common to all architectures 351 // PEEKUSR_AREA and POKEUSR_AREA are special, having a memory area 352 // containing the real addr, data, and len field pointed to by ARG3 353 // instead of ARG4 354 PRE(sys_ptrace) 355 { 356 PRINT("sys_ptrace ( %ld, %ld, %#lx, %#lx )", ARG1,ARG2,ARG3,ARG4); 357 PRE_REG_READ4(int, "ptrace", 358 long, request, long, pid, long, addr, long, data); 359 switch (ARG1) { 360 case VKI_PTRACE_PEEKTEXT: 361 case VKI_PTRACE_PEEKDATA: 362 case VKI_PTRACE_PEEKUSR: 363 PRE_MEM_WRITE( "ptrace(peek)", ARG4, 364 sizeof (long)); 365 break; 366 case VKI_PTRACE_GETEVENTMSG: 367 PRE_MEM_WRITE( "ptrace(geteventmsg)", ARG4, sizeof(unsigned long)); 368 break; 369 case VKI_PTRACE_GETSIGINFO: 370 PRE_MEM_WRITE( "ptrace(getsiginfo)", ARG4, sizeof(vki_siginfo_t)); 371 break; 372 case VKI_PTRACE_SETSIGINFO: 373 PRE_MEM_READ( "ptrace(setsiginfo)", ARG4, sizeof(vki_siginfo_t)); 374 break; 375 case VKI_PTRACE_PEEKUSR_AREA: 376 { 377 vki_ptrace_area *pa; 378 379 /* Reads a part of the user area into memory at pa->process_addr */ 380 pa = (vki_ptrace_area *) ARG3; 381 PRE_MEM_READ("ptrace(peekusrarea ptrace_area->len)", 382 (unsigned long) &pa->vki_len, sizeof(pa->vki_len)); 383 PRE_MEM_READ("ptrace(peekusrarea ptrace_area->kernel_addr)", 384 (unsigned long) &pa->vki_kernel_addr, sizeof(pa->vki_kernel_addr)); 385 PRE_MEM_READ("ptrace(peekusrarea ptrace_area->process_addr)", 386 (unsigned long) &pa->vki_process_addr, sizeof(pa->vki_process_addr)); 387 PRE_MEM_WRITE("ptrace(peekusrarea *(ptrace_area->process_addr))", 388 pa->vki_process_addr, pa->vki_len); 389 break; 390 } 391 case VKI_PTRACE_POKEUSR_AREA: 392 { 393 vki_ptrace_area *pa; 394 395 /* Updates a part of the user area from memory at pa->process_addr */ 396 pa = (vki_ptrace_area *) ARG3; 397 PRE_MEM_READ("ptrace(pokeusrarea ptrace_area->len)", 398 (unsigned long) &pa->vki_len, sizeof(pa->vki_len)); 399 PRE_MEM_READ("ptrace(pokeusrarea ptrace_area->kernel_addr)", 400 (unsigned long) &pa->vki_kernel_addr, 401 sizeof(pa->vki_kernel_addr)); 402 PRE_MEM_READ("ptrace(pokeusrarea ptrace_area->process_addr)", 403 (unsigned long) &pa->vki_process_addr, 404 sizeof(pa->vki_process_addr)); 405 PRE_MEM_READ("ptrace(pokeusrarea *(ptrace_area->process_addr))", 406 pa->vki_process_addr, pa->vki_len); 407 break; 408 } 409 default: 410 break; 411 } 412 } 413 414 POST(sys_ptrace) 415 { 416 switch (ARG1) { 417 case VKI_PTRACE_PEEKTEXT: 418 case VKI_PTRACE_PEEKDATA: 419 case VKI_PTRACE_PEEKUSR: 420 POST_MEM_WRITE( ARG4, sizeof (long)); 421 break; 422 case VKI_PTRACE_GETEVENTMSG: 423 POST_MEM_WRITE( ARG4, sizeof(unsigned long)); 424 break; 425 case VKI_PTRACE_GETSIGINFO: 426 /* XXX: This is a simplification. Different parts of the 427 * siginfo_t are valid depending on the type of signal. 428 */ 429 POST_MEM_WRITE( ARG4, sizeof(vki_siginfo_t)); 430 break; 431 case VKI_PTRACE_PEEKUSR_AREA: 432 { 433 vki_ptrace_area *pa; 434 435 pa = (vki_ptrace_area *) ARG3; 436 POST_MEM_WRITE(pa->vki_process_addr, pa->vki_len); 437 } 438 default: 439 break; 440 } 441 } 442 443 444 PRE(sys_socketcall) 445 { 446 # define ARG2_0 (((UWord*)ARG2)[0]) 447 # define ARG2_1 (((UWord*)ARG2)[1]) 448 # define ARG2_2 (((UWord*)ARG2)[2]) 449 # define ARG2_3 (((UWord*)ARG2)[3]) 450 # define ARG2_4 (((UWord*)ARG2)[4]) 451 # define ARG2_5 (((UWord*)ARG2)[5]) 452 453 *flags |= SfMayBlock; 454 PRINT("sys_socketcall ( %ld, %#lx )",ARG1,ARG2); 455 PRE_REG_READ2(long, "socketcall", int, call, unsigned long *, args); 456 457 switch (ARG1 /* request */) { 458 459 case VKI_SYS_SOCKETPAIR: 460 /* int socketpair(int d, int type, int protocol, int sv[2]); */ 461 PRE_MEM_READ( "socketcall.socketpair(args)", ARG2, 4*sizeof(Addr) ); 462 if (!ML_(valid_client_addr)(ARG2, 4*sizeof(Addr), tid, NULL)) { 463 SET_STATUS_Failure( VKI_EFAULT ); 464 break; 465 } 466 ML_(generic_PRE_sys_socketpair)( tid, ARG2_0, ARG2_1, ARG2_2, ARG2_3 ); 467 break; 468 469 case VKI_SYS_SOCKET: 470 /* int socket(int domain, int type, int protocol); */ 471 PRE_MEM_READ( "socketcall.socket(args)", ARG2, 3*sizeof(Addr) ); 472 if (!ML_(valid_client_addr)(ARG2, 3*sizeof(Addr), tid, NULL)) { 473 SET_STATUS_Failure( VKI_EFAULT ); 474 break; 475 } 476 break; 477 478 case VKI_SYS_BIND: 479 /* int bind(int sockfd, struct sockaddr *my_addr, 480 int addrlen); */ 481 PRE_MEM_READ( "socketcall.bind(args)", ARG2, 3*sizeof(Addr) ); 482 if (!ML_(valid_client_addr)(ARG2, 3*sizeof(Addr), tid, NULL)) { 483 SET_STATUS_Failure( VKI_EFAULT ); 484 break; 485 } 486 ML_(generic_PRE_sys_bind)( tid, ARG2_0, ARG2_1, ARG2_2 ); 487 break; 488 489 case VKI_SYS_LISTEN: 490 /* int listen(int s, int backlog); */ 491 PRE_MEM_READ( "socketcall.listen(args)", ARG2, 2*sizeof(Addr) ); 492 if (!ML_(valid_client_addr)(ARG2, 2*sizeof(Addr), tid, NULL)) { 493 SET_STATUS_Failure( VKI_EFAULT ); 494 break; 495 } 496 break; 497 498 case VKI_SYS_ACCEPT: { 499 /* int accept(int s, struct sockaddr *addr, int *addrlen); */ 500 PRE_MEM_READ( "socketcall.accept(args)", ARG2, 3*sizeof(Addr) ); 501 if (!ML_(valid_client_addr)(ARG2, 3*sizeof(Addr), tid, NULL)) { 502 SET_STATUS_Failure( VKI_EFAULT ); 503 break; 504 } 505 ML_(generic_PRE_sys_accept)( tid, ARG2_0, ARG2_1, ARG2_2 ); 506 break; 507 } 508 509 case VKI_SYS_SENDTO: 510 /* int sendto(int s, const void *msg, int len, 511 unsigned int flags, 512 const struct sockaddr *to, int tolen); */ 513 PRE_MEM_READ( "socketcall.sendto(args)", ARG2, 6*sizeof(Addr) ); 514 if (!ML_(valid_client_addr)(ARG2, 6*sizeof(Addr), tid, NULL)) { 515 SET_STATUS_Failure( VKI_EFAULT ); 516 break; 517 } 518 ML_(generic_PRE_sys_sendto)( tid, ARG2_0, ARG2_1, ARG2_2, 519 ARG2_3, ARG2_4, ARG2_5 ); 520 break; 521 522 case VKI_SYS_SEND: 523 /* int send(int s, const void *msg, size_t len, int flags); */ 524 PRE_MEM_READ( "socketcall.send(args)", ARG2, 4*sizeof(Addr) ); 525 if (!ML_(valid_client_addr)(ARG2, 4*sizeof(Addr), tid, NULL)) { 526 SET_STATUS_Failure( VKI_EFAULT ); 527 break; 528 } 529 ML_(generic_PRE_sys_send)( tid, ARG2_0, ARG2_1, ARG2_2 ); 530 break; 531 532 case VKI_SYS_RECVFROM: 533 /* int recvfrom(int s, void *buf, int len, unsigned int flags, 534 struct sockaddr *from, int *fromlen); */ 535 PRE_MEM_READ( "socketcall.recvfrom(args)", ARG2, 6*sizeof(Addr) ); 536 if (!ML_(valid_client_addr)(ARG2, 6*sizeof(Addr), tid, NULL)) { 537 SET_STATUS_Failure( VKI_EFAULT ); 538 break; 539 } 540 ML_(generic_PRE_sys_recvfrom)( tid, ARG2_0, ARG2_1, ARG2_2, 541 ARG2_3, ARG2_4, ARG2_5 ); 542 break; 543 544 case VKI_SYS_RECV: 545 /* int recv(int s, void *buf, int len, unsigned int flags); */ 546 /* man 2 recv says: 547 The recv call is normally used only on a connected socket 548 (see connect(2)) and is identical to recvfrom with a NULL 549 from parameter. 550 */ 551 PRE_MEM_READ( "socketcall.recv(args)", ARG2, 4*sizeof(Addr) ); 552 if (!ML_(valid_client_addr)(ARG2, 4*sizeof(Addr), tid, NULL)) { 553 SET_STATUS_Failure( VKI_EFAULT ); 554 break; 555 } 556 ML_(generic_PRE_sys_recv)( tid, ARG2_0, ARG2_1, ARG2_2 ); 557 break; 558 559 case VKI_SYS_CONNECT: 560 /* int connect(int sockfd, 561 struct sockaddr *serv_addr, int addrlen ); */ 562 PRE_MEM_READ( "socketcall.connect(args)", ARG2, 3*sizeof(Addr) ); 563 if (!ML_(valid_client_addr)(ARG2, 3*sizeof(Addr), tid, NULL)) { 564 SET_STATUS_Failure( VKI_EFAULT ); 565 break; 566 } 567 ML_(generic_PRE_sys_connect)( tid, ARG2_0, ARG2_1, ARG2_2 ); 568 break; 569 570 case VKI_SYS_SETSOCKOPT: 571 /* int setsockopt(int s, int level, int optname, 572 const void *optval, int optlen); */ 573 PRE_MEM_READ( "socketcall.setsockopt(args)", ARG2, 5*sizeof(Addr) ); 574 if (!ML_(valid_client_addr)(ARG2, 5*sizeof(Addr), tid, NULL)) { 575 SET_STATUS_Failure( VKI_EFAULT ); 576 break; 577 } 578 ML_(generic_PRE_sys_setsockopt)( tid, ARG2_0, ARG2_1, ARG2_2, 579 ARG2_3, ARG2_4 ); 580 break; 581 582 case VKI_SYS_GETSOCKOPT: 583 /* int getsockopt(int s, int level, int optname, 584 void *optval, socklen_t *optlen); */ 585 PRE_MEM_READ( "socketcall.getsockopt(args)", ARG2, 5*sizeof(Addr) ); 586 if (!ML_(valid_client_addr)(ARG2, 5*sizeof(Addr), tid, NULL)) { 587 SET_STATUS_Failure( VKI_EFAULT ); 588 break; 589 } 590 ML_(linux_PRE_sys_getsockopt)( tid, ARG2_0, ARG2_1, ARG2_2, 591 ARG2_3, ARG2_4 ); 592 break; 593 594 case VKI_SYS_GETSOCKNAME: 595 /* int getsockname(int s, struct sockaddr* name, int* namelen) */ 596 PRE_MEM_READ( "socketcall.getsockname(args)", ARG2, 3*sizeof(Addr) ); 597 if (!ML_(valid_client_addr)(ARG2, 3*sizeof(Addr), tid, NULL)) { 598 SET_STATUS_Failure( VKI_EFAULT ); 599 break; 600 } 601 ML_(generic_PRE_sys_getsockname)( tid, ARG2_0, ARG2_1, ARG2_2 ); 602 break; 603 604 case VKI_SYS_GETPEERNAME: 605 /* int getpeername(int s, struct sockaddr* name, int* namelen) */ 606 PRE_MEM_READ( "socketcall.getpeername(args)", ARG2, 3*sizeof(Addr) ); 607 if (!ML_(valid_client_addr)(ARG2, 3*sizeof(Addr), tid, NULL)) { 608 SET_STATUS_Failure( VKI_EFAULT ); 609 break; 610 } 611 ML_(generic_PRE_sys_getpeername)( tid, ARG2_0, ARG2_1, ARG2_2 ); 612 break; 613 614 case VKI_SYS_SHUTDOWN: 615 /* int shutdown(int s, int how); */ 616 PRE_MEM_READ( "socketcall.shutdown(args)", ARG2, 2*sizeof(Addr) ); 617 if (!ML_(valid_client_addr)(ARG2, 2*sizeof(Addr), tid, NULL)) { 618 SET_STATUS_Failure( VKI_EFAULT ); 619 break; 620 } 621 break; 622 623 case VKI_SYS_SENDMSG: { 624 /* int sendmsg(int s, const struct msghdr *msg, int flags); */ 625 PRE_MEM_READ( "socketcall.sendmsg(args)", ARG2, 3*sizeof(Addr) ); 626 if (!ML_(valid_client_addr)(ARG2, 3*sizeof(Addr), tid, NULL)) { 627 SET_STATUS_Failure( VKI_EFAULT ); 628 break; 629 } 630 ML_(generic_PRE_sys_sendmsg)( tid, "msg", (struct vki_msghdr *)ARG2_1 ); 631 break; 632 } 633 634 case VKI_SYS_RECVMSG: { 635 /* int recvmsg(int s, struct msghdr *msg, int flags); */ 636 PRE_MEM_READ("socketcall.recvmsg(args)", ARG2, 3*sizeof(Addr) ); 637 if (!ML_(valid_client_addr)(ARG2, 3*sizeof(Addr), tid, NULL)) { 638 SET_STATUS_Failure( VKI_EFAULT ); 639 break; 640 } 641 ML_(generic_PRE_sys_recvmsg)( tid, "msg2", (struct vki_msghdr *)ARG2_1 ); 642 break; 643 } 644 645 default: 646 VG_(message)(Vg_DebugMsg,"Warning: unhandled socketcall 0x%lx\n",ARG1); 647 SET_STATUS_Failure( VKI_EINVAL ); 648 break; 649 } 650 # undef ARG2_0 651 # undef ARG2_1 652 # undef ARG2_2 653 # undef ARG2_3 654 # undef ARG2_4 655 # undef ARG2_5 656 } 657 658 POST(sys_socketcall) 659 { 660 # define ARG2_0 (((UWord*)ARG2)[0]) 661 # define ARG2_1 (((UWord*)ARG2)[1]) 662 # define ARG2_2 (((UWord*)ARG2)[2]) 663 # define ARG2_3 (((UWord*)ARG2)[3]) 664 # define ARG2_4 (((UWord*)ARG2)[4]) 665 # define ARG2_5 (((UWord*)ARG2)[5]) 666 667 SysRes r; 668 vg_assert(SUCCESS); 669 switch (ARG1 /* request */) { 670 671 case VKI_SYS_SOCKETPAIR: 672 r = ML_(generic_POST_sys_socketpair)( 673 tid, VG_(mk_SysRes_Success)(RES), 674 ARG2_0, ARG2_1, ARG2_2, ARG2_3 675 ); 676 SET_STATUS_from_SysRes(r); 677 break; 678 679 case VKI_SYS_SOCKET: 680 r = ML_(generic_POST_sys_socket)( tid, VG_(mk_SysRes_Success)(RES) ); 681 SET_STATUS_from_SysRes(r); 682 break; 683 684 case VKI_SYS_BIND: 685 /* int bind(int sockfd, struct sockaddr *my_addr, 686 int addrlen); */ 687 break; 688 689 case VKI_SYS_LISTEN: 690 /* int listen(int s, int backlog); */ 691 break; 692 693 case VKI_SYS_ACCEPT: 694 /* int accept(int s, struct sockaddr *addr, int *addrlen); */ 695 r = ML_(generic_POST_sys_accept)( tid, VG_(mk_SysRes_Success)(RES), 696 ARG2_0, ARG2_1, ARG2_2 ); 697 SET_STATUS_from_SysRes(r); 698 break; 699 700 case VKI_SYS_SENDTO: 701 break; 702 703 case VKI_SYS_SEND: 704 break; 705 706 case VKI_SYS_RECVFROM: 707 ML_(generic_POST_sys_recvfrom)( tid, VG_(mk_SysRes_Success)(RES), 708 ARG2_0, ARG2_1, ARG2_2, 709 ARG2_3, ARG2_4, ARG2_5 ); 710 break; 711 712 case VKI_SYS_RECV: 713 ML_(generic_POST_sys_recv)( tid, RES, ARG2_0, ARG2_1, ARG2_2 ); 714 break; 715 716 case VKI_SYS_CONNECT: 717 break; 718 719 case VKI_SYS_SETSOCKOPT: 720 break; 721 722 case VKI_SYS_GETSOCKOPT: 723 ML_(linux_POST_sys_getsockopt)( tid, VG_(mk_SysRes_Success)(RES), 724 ARG2_0, ARG2_1, 725 ARG2_2, ARG2_3, ARG2_4 ); 726 break; 727 728 case VKI_SYS_GETSOCKNAME: 729 ML_(generic_POST_sys_getsockname)( tid, VG_(mk_SysRes_Success)(RES), 730 ARG2_0, ARG2_1, ARG2_2 ); 731 break; 732 733 case VKI_SYS_GETPEERNAME: 734 ML_(generic_POST_sys_getpeername)( tid, VG_(mk_SysRes_Success)(RES), 735 ARG2_0, ARG2_1, ARG2_2 ); 736 break; 737 738 case VKI_SYS_SHUTDOWN: 739 break; 740 741 case VKI_SYS_SENDMSG: 742 break; 743 744 case VKI_SYS_RECVMSG: 745 ML_(generic_POST_sys_recvmsg)( tid, "msg", (struct vki_msghdr *)ARG2_1, RES ); 746 break; 747 748 default: 749 VG_(message)(Vg_DebugMsg,"FATAL: unhandled socketcall 0x%lx\n",ARG1); 750 VG_(core_panic)("... bye!\n"); 751 break; /*NOTREACHED*/ 752 } 753 # undef ARG2_0 754 # undef ARG2_1 755 # undef ARG2_2 756 # undef ARG2_3 757 # undef ARG2_4 758 # undef ARG2_5 759 } 760 761 PRE(sys_mmap) 762 { 763 UWord a0, a1, a2, a3, a4, a5; 764 SysRes r; 765 766 UWord* args = (UWord*)ARG1; 767 PRE_REG_READ1(long, "sys_mmap", struct mmap_arg_struct *, args); 768 PRE_MEM_READ( "sys_mmap(args)", (Addr) args, 6*sizeof(UWord) ); 769 770 a0 = args[0]; 771 a1 = args[1]; 772 a2 = args[2]; 773 a3 = args[3]; 774 a4 = args[4]; 775 a5 = args[5]; 776 777 PRINT("sys_mmap ( %#lx, %llu, %ld, %ld, %ld, %ld )", 778 a0, (ULong)a1, a2, a3, a4, a5 ); 779 780 r = ML_(generic_PRE_sys_mmap)( tid, a0, a1, a2, a3, a4, (Off64T)a5 ); 781 SET_STATUS_from_SysRes(r); 782 } 783 784 static Addr deref_Addr ( ThreadId tid, Addr a, Char* s ) 785 { 786 Addr* a_p = (Addr*)a; 787 PRE_MEM_READ( s, (Addr)a_p, sizeof(Addr) ); 788 return *a_p; 789 } 790 791 PRE(sys_ipc) 792 { 793 PRINT("sys_ipc ( %ld, %ld, %ld, %ld, %#lx, %ld )", 794 ARG1,ARG2,ARG3,ARG4,ARG5,ARG6); 795 // XXX: this is simplistic -- some args are not used in all circumstances. 796 PRE_REG_READ6(int, "ipc", 797 vki_uint, call, int, first, int, second, int, third, 798 void *, ptr, long, fifth) 799 800 switch (ARG1 /* call */) { 801 case VKI_SEMOP: 802 ML_(generic_PRE_sys_semop)( tid, ARG2, ARG5, ARG3 ); 803 *flags |= SfMayBlock; 804 break; 805 case VKI_SEMGET: 806 break; 807 case VKI_SEMCTL: 808 { 809 UWord arg = deref_Addr( tid, ARG5, "semctl(arg)" ); 810 ML_(generic_PRE_sys_semctl)( tid, ARG2, ARG3, ARG4, arg ); 811 break; 812 } 813 case VKI_SEMTIMEDOP: 814 ML_(generic_PRE_sys_semtimedop)( tid, ARG2, ARG5, ARG3, ARG6 ); 815 *flags |= SfMayBlock; 816 break; 817 case VKI_MSGSND: 818 ML_(linux_PRE_sys_msgsnd)( tid, ARG2, ARG5, ARG3, ARG4 ); 819 if ((ARG4 & VKI_IPC_NOWAIT) == 0) 820 *flags |= SfMayBlock; 821 break; 822 case VKI_MSGRCV: 823 { 824 Addr msgp; 825 Word msgtyp; 826 827 msgp = deref_Addr( tid, 828 (Addr) (&((struct vki_ipc_kludge *)ARG5)->msgp), 829 "msgrcv(msgp)" ); 830 msgtyp = deref_Addr( tid, 831 (Addr) (&((struct vki_ipc_kludge *)ARG5)->msgtyp), 832 "msgrcv(msgp)" ); 833 834 ML_(linux_PRE_sys_msgrcv)( tid, ARG2, msgp, ARG3, msgtyp, ARG4 ); 835 836 if ((ARG4 & VKI_IPC_NOWAIT) == 0) 837 *flags |= SfMayBlock; 838 break; 839 } 840 case VKI_MSGGET: 841 break; 842 case VKI_MSGCTL: 843 ML_(linux_PRE_sys_msgctl)( tid, ARG2, ARG3, ARG5 ); 844 break; 845 case VKI_SHMAT: 846 { 847 UWord w; 848 PRE_MEM_WRITE( "shmat(raddr)", ARG4, sizeof(Addr) ); 849 w = ML_(generic_PRE_sys_shmat)( tid, ARG2, ARG5, ARG3 ); 850 if (w == 0) 851 SET_STATUS_Failure( VKI_EINVAL ); 852 else 853 ARG5 = w; 854 break; 855 } 856 case VKI_SHMDT: 857 if (!ML_(generic_PRE_sys_shmdt)(tid, ARG5)) 858 SET_STATUS_Failure( VKI_EINVAL ); 859 break; 860 case VKI_SHMGET: 861 break; 862 case VKI_SHMCTL: /* IPCOP_shmctl */ 863 ML_(generic_PRE_sys_shmctl)( tid, ARG2, ARG3, ARG5 ); 864 break; 865 default: 866 VG_(message)(Vg_DebugMsg, "FATAL: unhandled syscall(ipc) %ld", ARG1 ); 867 VG_(core_panic)("... bye!\n"); 868 break; /*NOTREACHED*/ 869 } 870 } 871 872 POST(sys_ipc) 873 { 874 vg_assert(SUCCESS); 875 switch (ARG1 /* call */) { 876 case VKI_SEMOP: 877 case VKI_SEMGET: 878 break; 879 case VKI_SEMCTL: 880 { 881 UWord arg = deref_Addr( tid, ARG5, "semctl(arg)" ); 882 ML_(generic_PRE_sys_semctl)( tid, ARG2, ARG3, ARG4, arg ); 883 break; 884 } 885 case VKI_SEMTIMEDOP: 886 case VKI_MSGSND: 887 break; 888 case VKI_MSGRCV: 889 { 890 Addr msgp; 891 Word msgtyp; 892 893 msgp = deref_Addr( tid, 894 (Addr) (&((struct vki_ipc_kludge *)ARG5)->msgp), 895 "msgrcv(msgp)" ); 896 msgtyp = deref_Addr( tid, 897 (Addr) (&((struct vki_ipc_kludge *)ARG5)->msgtyp), 898 "msgrcv(msgp)" ); 899 900 ML_(linux_POST_sys_msgrcv)( tid, RES, ARG2, msgp, ARG3, msgtyp, ARG4 ); 901 break; 902 } 903 case VKI_MSGGET: 904 break; 905 case VKI_MSGCTL: 906 ML_(linux_POST_sys_msgctl)( tid, RES, ARG2, ARG3, ARG5 ); 907 break; 908 case VKI_SHMAT: 909 { 910 Addr addr; 911 912 /* force readability. before the syscall it is 913 * indeed uninitialized, as can be seen in 914 * glibc/sysdeps/unix/sysv/linux/shmat.c */ 915 POST_MEM_WRITE( ARG4, sizeof( Addr ) ); 916 917 addr = deref_Addr ( tid, ARG4, "shmat(addr)" ); 918 ML_(generic_POST_sys_shmat)( tid, addr, ARG2, ARG5, ARG3 ); 919 break; 920 } 921 case VKI_SHMDT: 922 ML_(generic_POST_sys_shmdt)( tid, RES, ARG5 ); 923 break; 924 case VKI_SHMGET: 925 break; 926 case VKI_SHMCTL: 927 ML_(generic_POST_sys_shmctl)( tid, RES, ARG2, ARG3, ARG5 ); 928 break; 929 default: 930 VG_(message)(Vg_DebugMsg, 931 "FATAL: unhandled syscall(ipc) %ld", 932 ARG1 ); 933 VG_(core_panic)("... bye!\n"); 934 break; /*NOTREACHED*/ 935 } 936 } 937 938 PRE(sys_clone) 939 { 940 UInt cloneflags; 941 942 PRINT("sys_clone ( %lx, %#lx, %#lx, %#lx, %#lx )",ARG1,ARG2,ARG3,ARG4, ARG5); 943 PRE_REG_READ2(int, "clone", 944 void *, child_stack, 945 unsigned long, flags); 946 947 if (ARG2 & VKI_CLONE_PARENT_SETTID) { 948 if (VG_(tdict).track_pre_reg_read) 949 PRA3("clone(parent_tidptr)", int *, parent_tidptr); 950 PRE_MEM_WRITE("clone(parent_tidptr)", ARG3, sizeof(Int)); 951 if (!VG_(am_is_valid_for_client)(ARG3, sizeof(Int), 952 VKI_PROT_WRITE)) { 953 SET_STATUS_Failure( VKI_EFAULT ); 954 return; 955 } 956 } 957 if (ARG2 & (VKI_CLONE_CHILD_SETTID | VKI_CLONE_CHILD_CLEARTID)) { 958 if (VG_(tdict).track_pre_reg_read) 959 PRA4("clone(child_tidptr)", int *, child_tidptr); 960 PRE_MEM_WRITE("clone(child_tidptr)", ARG4, sizeof(Int)); 961 if (!VG_(am_is_valid_for_client)(ARG4, sizeof(Int), 962 VKI_PROT_WRITE)) { 963 SET_STATUS_Failure( VKI_EFAULT ); 964 return; 965 } 966 } 967 968 /* The kernel simply copies reg6 (ARG5) into AR0 and AR1, no checks */ 969 if (ARG2 & VKI_CLONE_SETTLS) { 970 if (VG_(tdict).track_pre_reg_read) { 971 PRA5("clone", Addr, tlsinfo); 972 } 973 } 974 975 cloneflags = ARG2; 976 977 if (!ML_(client_signal_OK)(ARG2 & VKI_CSIGNAL)) { 978 SET_STATUS_Failure( VKI_EINVAL ); 979 return; 980 } 981 982 /* Only look at the flags we really care about */ 983 switch (cloneflags & (VKI_CLONE_VM | VKI_CLONE_FS 984 | VKI_CLONE_FILES | VKI_CLONE_VFORK)) { 985 case VKI_CLONE_VM | VKI_CLONE_FS | VKI_CLONE_FILES: 986 /* thread creation */ 987 SET_STATUS_from_SysRes( 988 do_clone(tid, 989 (Addr)ARG1, /* child SP */ 990 ARG2, /* flags */ 991 (Int *)ARG3, /* parent_tidptr */ 992 (Int *)ARG4, /* child_tidptr */ 993 (Addr)ARG5)); /* tlsaddr */ 994 break; 995 996 case VKI_CLONE_VFORK | VKI_CLONE_VM: /* vfork */ 997 /* FALLTHROUGH - assume vfork == fork */ 998 cloneflags &= ~(VKI_CLONE_VFORK | VKI_CLONE_VM); 999 1000 case 0: /* plain fork */ 1001 SET_STATUS_from_SysRes( 1002 ML_(do_fork_clone)(tid, 1003 cloneflags, /* flags */ 1004 (Int *)ARG3, /* parent_tidptr */ 1005 (Int *)ARG4)); /* child_tidptr */ 1006 break; 1007 1008 default: 1009 /* should we just ENOSYS? */ 1010 VG_(message)(Vg_UserMsg, "Unsupported clone() flags: 0x%lx", ARG2); 1011 VG_(message)(Vg_UserMsg, ""); 1012 VG_(message)(Vg_UserMsg, "The only supported clone() uses are:"); 1013 VG_(message)(Vg_UserMsg, " - via a threads library (NPTL)"); 1014 VG_(message)(Vg_UserMsg, " - via the implementation of fork or vfork"); 1015 VG_(unimplemented) 1016 ("Valgrind does not support general clone()."); 1017 } 1018 1019 if (SUCCESS) { 1020 if (ARG2 & VKI_CLONE_PARENT_SETTID) 1021 POST_MEM_WRITE(ARG3, sizeof(Int)); 1022 if (ARG2 & (VKI_CLONE_CHILD_SETTID | VKI_CLONE_CHILD_CLEARTID)) 1023 POST_MEM_WRITE(ARG4, sizeof(Int)); 1024 1025 /* Thread creation was successful; let the child have the chance 1026 to run */ 1027 *flags |= SfYieldAfter; 1028 } 1029 } 1030 1031 PRE(sys_sigreturn) 1032 { 1033 ThreadState* tst; 1034 PRINT("sys_sigreturn ( )"); 1035 1036 vg_assert(VG_(is_valid_tid)(tid)); 1037 vg_assert(tid >= 1 && tid < VG_N_THREADS); 1038 vg_assert(VG_(is_running_thread)(tid)); 1039 1040 tst = VG_(get_ThreadState)(tid); 1041 1042 /* This is only so that the IA is (might be) useful to report if 1043 something goes wrong in the sigreturn */ 1044 ML_(fixup_guest_state_to_restart_syscall)(&tst->arch); 1045 1046 /* Restore register state from frame and remove it */ 1047 VG_(sigframe_destroy)(tid, False); 1048 1049 /* Tell the driver not to update the guest state with the "result", 1050 and set a bogus result to keep it happy. */ 1051 *flags |= SfNoWriteResult; 1052 SET_STATUS_Success(0); 1053 1054 /* Check to see if any signals arose as a result of this. */ 1055 *flags |= SfPollAfter; 1056 } 1057 1058 1059 PRE(sys_rt_sigreturn) 1060 { 1061 /* See comments on PRE(sys_rt_sigreturn) in syswrap-amd64-linux.c for 1062 an explanation of what follows. */ 1063 1064 ThreadState* tst; 1065 PRINT("sys_rt_sigreturn ( )"); 1066 1067 vg_assert(VG_(is_valid_tid)(tid)); 1068 vg_assert(tid >= 1 && tid < VG_N_THREADS); 1069 vg_assert(VG_(is_running_thread)(tid)); 1070 1071 tst = VG_(get_ThreadState)(tid); 1072 1073 /* This is only so that the IA is (might be) useful to report if 1074 something goes wrong in the sigreturn */ 1075 ML_(fixup_guest_state_to_restart_syscall)(&tst->arch); 1076 1077 /* Restore register state from frame and remove it */ 1078 VG_(sigframe_destroy)(tid, True); 1079 1080 /* Tell the driver not to update the guest state with the "result", 1081 and set a bogus result to keep it happy. */ 1082 *flags |= SfNoWriteResult; 1083 SET_STATUS_Success(0); 1084 1085 /* Check to see if any signals arose as a result of this. */ 1086 *flags |= SfPollAfter; 1087 } 1088 1089 /* we cant use the LINX_ version for 64 bit */ 1090 PRE(sys_fadvise64) 1091 { 1092 PRINT("sys_fadvise64 ( %ld, %ld, %ld, %ld )", ARG1,ARG2,ARG3,ARG4); 1093 PRE_REG_READ4(long, "fadvise64", 1094 int, fd, vki_loff_t, offset, vki_loff_t, len, int, advice); 1095 } 1096 1097 #undef PRE 1098 #undef POST 1099 1100 /* --------------------------------------------------------------------- 1101 The s390x/Linux syscall table 1102 ------------------------------------------------------------------ */ 1103 1104 /* Add an s390x-linux specific wrapper to a syscall table. */ 1105 #define PLAX_(sysno, name) WRAPPER_ENTRY_X_(s390x_linux, sysno, name) 1106 #define PLAXY(sysno, name) WRAPPER_ENTRY_XY(s390x_linux, sysno, name) 1107 1108 // This table maps from __NR_xxx syscall numbers from 1109 // linux/arch/s390/kernel/syscalls.S to the appropriate PRE/POST sys_foo() 1110 // wrappers on s390x. There are several unused numbers, which are only 1111 // defined on s390 (31bit mode) but no longer available on s390x (64 bit). 1112 // For those syscalls not handled by Valgrind, the annotation indicate its 1113 // arch/OS combination, eg. */* (generic), */Linux (Linux only), ?/? 1114 // (unknown). 1115 1116 static SyscallTableEntry syscall_table[] = { 1117 GENX_(0, sys_ni_syscall), /* unimplemented (by the kernel) */ // 0 1118 GENX_(__NR_exit, sys_exit), // 1 1119 GENX_(__NR_fork, sys_fork), // 2 1120 GENXY(__NR_read, sys_read), // 3 1121 GENX_(__NR_write, sys_write), // 4 1122 1123 GENXY(__NR_open, sys_open), // 5 1124 GENXY(__NR_close, sys_close), // 6 1125 // ?????(__NR_restart_syscall, ), // 7 1126 GENXY(__NR_creat, sys_creat), // 8 1127 GENX_(__NR_link, sys_link), // 9 1128 1129 GENX_(__NR_unlink, sys_unlink), // 10 1130 GENX_(__NR_execve, sys_execve), // 11 1131 GENX_(__NR_chdir, sys_chdir), // 12 1132 GENX_(13, sys_ni_syscall), /* unimplemented (by the kernel) */ // 13 1133 GENX_(__NR_mknod, sys_mknod), // 14 1134 1135 GENX_(__NR_chmod, sys_chmod), // 15 1136 GENX_(16, sys_ni_syscall), /* unimplemented (by the kernel) */ // 16 1137 GENX_(17, sys_ni_syscall), /* unimplemented (by the kernel) */ // 17 1138 GENX_(18, sys_ni_syscall), /* unimplemented (by the kernel) */ // 18 1139 LINX_(__NR_lseek, sys_lseek), // 19 1140 1141 GENX_(__NR_getpid, sys_getpid), // 20 1142 LINX_(__NR_mount, sys_mount), // 21 1143 LINX_(__NR_umount, sys_oldumount), // 22 1144 GENX_(23, sys_ni_syscall), /* unimplemented (by the kernel) */ // 23 1145 GENX_(24, sys_ni_syscall), /* unimplemented (by the kernel) */ // 24 1146 1147 GENX_(25, sys_ni_syscall), /* unimplemented (by the kernel) */ // 25 1148 PLAXY(__NR_ptrace, sys_ptrace), // 26 1149 GENX_(__NR_alarm, sys_alarm), // 27 1150 GENX_(28, sys_ni_syscall), /* unimplemented (by the kernel) */ // 28 1151 GENX_(__NR_pause, sys_pause), // 29 1152 1153 LINX_(__NR_utime, sys_utime), // 30 1154 GENX_(31, sys_ni_syscall), /* unimplemented (by the kernel) */ // 31 1155 GENX_(32, sys_ni_syscall), /* unimplemented (by the kernel) */ // 32 1156 GENX_(__NR_access, sys_access), // 33 1157 GENX_(__NR_nice, sys_nice), // 34 1158 1159 GENX_(35, sys_ni_syscall), /* unimplemented (by the kernel) */ // 35 1160 GENX_(__NR_sync, sys_sync), // 36 1161 GENX_(__NR_kill, sys_kill), // 37 1162 GENX_(__NR_rename, sys_rename), // 38 1163 GENX_(__NR_mkdir, sys_mkdir), // 39 1164 1165 GENX_(__NR_rmdir, sys_rmdir), // 40 1166 GENXY(__NR_dup, sys_dup), // 41 1167 LINXY(__NR_pipe, sys_pipe), // 42 1168 GENXY(__NR_times, sys_times), // 43 1169 GENX_(44, sys_ni_syscall), /* unimplemented (by the kernel) */ // 44 1170 1171 GENX_(__NR_brk, sys_brk), // 45 1172 GENX_(46, sys_ni_syscall), /* unimplemented (by the kernel) */ // 46 1173 GENX_(47, sys_ni_syscall), /* unimplemented (by the kernel) */ // 47 1174 // ?????(__NR_signal, ), // 48 1175 GENX_(49, sys_ni_syscall), /* unimplemented (by the kernel) */ // 49 1176 1177 GENX_(50, sys_ni_syscall), /* unimplemented (by the kernel) */ // 50 1178 GENX_(__NR_acct, sys_acct), // 51 1179 LINX_(__NR_umount2, sys_umount), // 52 1180 GENX_(53, sys_ni_syscall), /* unimplemented (by the kernel) */ // 53 1181 LINXY(__NR_ioctl, sys_ioctl), // 54 1182 1183 LINXY(__NR_fcntl, sys_fcntl), // 55 1184 GENX_(56, sys_ni_syscall), /* unimplemented (by the kernel) */ // 56 1185 GENX_(__NR_setpgid, sys_setpgid), // 57 1186 GENX_(58, sys_ni_syscall), /* unimplemented (by the kernel) */ // 58 1187 GENX_(59, sys_ni_syscall), /* unimplemented (by the kernel) */ // 59 1188 1189 GENX_(__NR_umask, sys_umask), // 60 1190 GENX_(__NR_chroot, sys_chroot), // 61 1191 // ?????(__NR_ustat, sys_ustat), /* deprecated in favor of statfs */ // 62 1192 GENXY(__NR_dup2, sys_dup2), // 63 1193 GENX_(__NR_getppid, sys_getppid), // 64 1194 1195 GENX_(__NR_getpgrp, sys_getpgrp), // 65 1196 GENX_(__NR_setsid, sys_setsid), // 66 1197 // ?????(__NR_sigaction, ), /* userspace uses rt_sigaction */ // 67 1198 GENX_(68, sys_ni_syscall), /* unimplemented (by the kernel) */ // 68 1199 GENX_(69, sys_ni_syscall), /* unimplemented (by the kernel) */ // 69 1200 1201 GENX_(70, sys_ni_syscall), /* unimplemented (by the kernel) */ // 70 1202 GENX_(71, sys_ni_syscall), /* unimplemented (by the kernel) */ // 71 1203 // ?????(__NR_sigsuspend, ), // 72 1204 // ?????(__NR_sigpending, ), // 73 1205 // ?????(__NR_sethostname, ), // 74 1206 1207 GENX_(__NR_setrlimit, sys_setrlimit), // 75 1208 GENXY(76, sys_getrlimit), /* see also 191 */ // 76 1209 GENXY(__NR_getrusage, sys_getrusage), // 77 1210 GENXY(__NR_gettimeofday, sys_gettimeofday), // 78 1211 GENX_(__NR_settimeofday, sys_settimeofday), // 79 1212 1213 GENX_(80, sys_ni_syscall), /* unimplemented (by the kernel) */ // 80 1214 GENX_(81, sys_ni_syscall), /* unimplemented (by the kernel) */ // 81 1215 GENX_(82, sys_ni_syscall), /* unimplemented (by the kernel) */ // 82 1216 GENX_(__NR_symlink, sys_symlink), // 83 1217 GENX_(84, sys_ni_syscall), /* unimplemented (by the kernel) */ // 84 1218 1219 GENX_(__NR_readlink, sys_readlink), // 85 1220 // ?????(__NR_uselib, ), // 86 1221 // ?????(__NR_swapon, ), // 87 1222 // ?????(__NR_reboot, ), // 88 1223 GENX_(89, sys_ni_syscall), /* unimplemented (by the kernel) */ // 89 1224 1225 PLAX_(__NR_mmap, sys_mmap ), // 90 1226 GENXY(__NR_munmap, sys_munmap), // 91 1227 GENX_(__NR_truncate, sys_truncate), // 92 1228 GENX_(__NR_ftruncate, sys_ftruncate), // 93 1229 GENX_(__NR_fchmod, sys_fchmod), // 94 1230 1231 GENX_(95, sys_ni_syscall), /* unimplemented (by the kernel) */ // 95 1232 GENX_(__NR_getpriority, sys_getpriority), // 96 1233 GENX_(__NR_setpriority, sys_setpriority), // 97 1234 GENX_(98, sys_ni_syscall), /* unimplemented (by the kernel) */ // 98 1235 GENXY(__NR_statfs, sys_statfs), // 99 1236 1237 GENXY(__NR_fstatfs, sys_fstatfs), // 100 1238 GENX_(101, sys_ni_syscall), /* unimplemented (by the kernel) */ // 101 1239 PLAXY(__NR_socketcall, sys_socketcall), // 102 1240 LINXY(__NR_syslog, sys_syslog), // 103 1241 GENXY(__NR_setitimer, sys_setitimer), // 104 1242 1243 GENXY(__NR_getitimer, sys_getitimer), // 105 1244 GENXY(__NR_stat, sys_newstat), // 106 1245 GENXY(__NR_lstat, sys_newlstat), // 107 1246 GENXY(__NR_fstat, sys_newfstat), // 108 1247 GENX_(109, sys_ni_syscall), /* unimplemented (by the kernel) */ // 109 1248 1249 LINXY(__NR_lookup_dcookie, sys_lookup_dcookie), // 110 1250 LINX_(__NR_vhangup, sys_vhangup), // 111 1251 GENX_(112, sys_ni_syscall), /* unimplemented (by the kernel) */ // 112 1252 GENX_(113, sys_ni_syscall), /* unimplemented (by the kernel) */ // 113 1253 GENXY(__NR_wait4, sys_wait4), // 114 1254 1255 // ?????(__NR_swapoff, ), // 115 1256 LINXY(__NR_sysinfo, sys_sysinfo), // 116 1257 PLAXY(__NR_ipc, sys_ipc), // 117 1258 GENX_(__NR_fsync, sys_fsync), // 118 1259 PLAX_(__NR_sigreturn, sys_sigreturn), // 119 1260 1261 PLAX_(__NR_clone, sys_clone), // 120 1262 // ?????(__NR_setdomainname, ), // 121 1263 GENXY(__NR_uname, sys_newuname), // 122 1264 GENX_(123, sys_ni_syscall), /* unimplemented (by the kernel) */ // 123 1265 // ?????(__NR_adjtimex, ), // 124 1266 1267 GENXY(__NR_mprotect, sys_mprotect), // 125 1268 // LINXY(__NR_sigprocmask, sys_sigprocmask), // 126 1269 GENX_(127, sys_ni_syscall), /* unimplemented (by the kernel) */ // 127 1270 LINX_(__NR_init_module, sys_init_module), // 128 1271 LINX_(__NR_delete_module, sys_delete_module), // 129 1272 1273 GENX_(130, sys_ni_syscall), /* unimplemented (by the kernel) */ // 130 1274 LINX_(__NR_quotactl, sys_quotactl), // 131 1275 GENX_(__NR_getpgid, sys_getpgid), // 132 1276 GENX_(__NR_fchdir, sys_fchdir), // 133 1277 // ?????(__NR_bdflush, ), // 134 1278 1279 // ?????(__NR_sysfs, ), // 135 1280 LINX_(__NR_personality, sys_personality), // 136 1281 GENX_(137, sys_ni_syscall), /* unimplemented (by the kernel) */ // 137 1282 GENX_(138, sys_ni_syscall), /* unimplemented (by the kernel) */ // 138 1283 GENX_(139, sys_ni_syscall), /* unimplemented (by the kernel) */ // 139 1284 1285 // LINXY(__NR__llseek, sys_llseek), /* 64 bit --> lseek */ // 140 1286 GENXY(__NR_getdents, sys_getdents), // 141 1287 GENX_(__NR_select, sys_select), // 142 1288 GENX_(__NR_flock, sys_flock), // 143 1289 GENX_(__NR_msync, sys_msync), // 144 1290 1291 GENXY(__NR_readv, sys_readv), // 145 1292 GENX_(__NR_writev, sys_writev), // 146 1293 GENX_(__NR_getsid, sys_getsid), // 147 1294 GENX_(__NR_fdatasync, sys_fdatasync), // 148 1295 LINXY(__NR__sysctl, sys_sysctl), // 149 1296 1297 GENX_(__NR_mlock, sys_mlock), // 150 1298 GENX_(__NR_munlock, sys_munlock), // 151 1299 GENX_(__NR_mlockall, sys_mlockall), // 152 1300 LINX_(__NR_munlockall, sys_munlockall), // 153 1301 LINXY(__NR_sched_setparam, sys_sched_setparam), // 154 1302 1303 LINXY(__NR_sched_getparam, sys_sched_getparam), // 155 1304 LINX_(__NR_sched_setscheduler, sys_sched_setscheduler), // 156 1305 LINX_(__NR_sched_getscheduler, sys_sched_getscheduler), // 157 1306 LINX_(__NR_sched_yield, sys_sched_yield), // 158 1307 LINX_(__NR_sched_get_priority_max, sys_sched_get_priority_max), // 159 1308 1309 LINX_(__NR_sched_get_priority_min, sys_sched_get_priority_min), // 160 1310 // ?????(__NR_sched_rr_get_interval, ), // 161 1311 GENXY(__NR_nanosleep, sys_nanosleep), // 162 1312 GENX_(__NR_mremap, sys_mremap), // 163 1313 GENX_(164, sys_ni_syscall), /* unimplemented (by the kernel) */ // 164 1314 1315 GENX_(165, sys_ni_syscall), /* unimplemented (by the kernel) */ // 165 1316 GENX_(166, sys_ni_syscall), /* unimplemented (by the kernel) */ // 166 1317 GENX_(167, sys_ni_syscall), /* unimplemented (by the kernel) */ // 167 1318 GENXY(__NR_poll, sys_poll), // 168 1319 // ?????(__NR_nfsservctl, ), // 169 1320 1321 GENX_(170, sys_ni_syscall), /* unimplemented (by the kernel) */ // 170 1322 GENX_(171, sys_ni_syscall), /* unimplemented (by the kernel) */ // 171 1323 LINXY(__NR_prctl, sys_prctl), // 172 1324 PLAX_(__NR_rt_sigreturn, sys_rt_sigreturn), // 173 1325 LINXY(__NR_rt_sigaction, sys_rt_sigaction), // 174 1326 1327 LINXY(__NR_rt_sigprocmask, sys_rt_sigprocmask), // 175 1328 LINXY(__NR_rt_sigpending, sys_rt_sigpending), // 176 1329 LINXY(__NR_rt_sigtimedwait, sys_rt_sigtimedwait), // 177 1330 LINXY(__NR_rt_sigqueueinfo, sys_rt_sigqueueinfo), // 178 1331 LINX_(__NR_rt_sigsuspend, sys_rt_sigsuspend), // 179 1332 1333 GENXY(__NR_pread64, sys_pread64), // 180 1334 GENX_(__NR_pwrite64, sys_pwrite64), // 181 1335 GENX_(182, sys_ni_syscall), /* unimplemented (by the kernel) */ // 182 1336 GENXY(__NR_getcwd, sys_getcwd), // 183 1337 LINXY(__NR_capget, sys_capget), // 184 1338 1339 LINX_(__NR_capset, sys_capset), // 185 1340 GENXY(__NR_sigaltstack, sys_sigaltstack), // 186 1341 LINXY(__NR_sendfile, sys_sendfile), // 187 1342 GENX_(188, sys_ni_syscall), /* unimplemented (by the kernel) */ // 188 1343 GENX_(189, sys_ni_syscall), /* unimplemented (by the kernel) */ // 189 1344 1345 GENX_(__NR_vfork, sys_fork), // 190 1346 GENXY(__NR_getrlimit, sys_getrlimit), // 191 1347 GENX_(192, sys_ni_syscall), /* not exported on 64bit*/ // 192 1348 GENX_(193, sys_ni_syscall), /* unimplemented (by the kernel) */ // 193 1349 GENX_(194, sys_ni_syscall), /* unimplemented (by the kernel) */ // 194 1350 1351 GENX_(195, sys_ni_syscall), /* unimplemented (by the kernel) */ // 195 1352 GENX_(196, sys_ni_syscall), /* unimplemented (by the kernel) */ // 196 1353 GENX_(197, sys_ni_syscall), /* unimplemented (by the kernel) */ // 197 1354 GENX_(__NR_lchown, sys_lchown), // 198 1355 GENX_(__NR_getuid, sys_getuid), // 199 1356 1357 GENX_(__NR_getgid, sys_getgid), // 200 1358 GENX_(__NR_geteuid, sys_geteuid), // 201 1359 GENX_(__NR_getegid, sys_getegid), // 202 1360 GENX_(__NR_setreuid, sys_setreuid), // 203 1361 GENX_(__NR_setregid, sys_setregid), // 204 1362 1363 GENXY(__NR_getgroups, sys_getgroups), // 205 1364 GENX_(__NR_setgroups, sys_setgroups), // 206 1365 GENX_(__NR_fchown, sys_fchown), // 207 1366 LINX_(__NR_setresuid, sys_setresuid), // 208 1367 LINXY(__NR_getresuid, sys_getresuid), // 209 1368 1369 LINX_(__NR_setresgid, sys_setresgid), // 210 1370 LINXY(__NR_getresgid, sys_getresgid), // 211 1371 GENX_(__NR_chown, sys_chown), // 212 1372 GENX_(__NR_setuid, sys_setuid), // 213 1373 GENX_(__NR_setgid, sys_setgid), // 214 1374 1375 LINX_(__NR_setfsuid, sys_setfsuid), // 215 1376 LINX_(__NR_setfsgid, sys_setfsgid), // 216 1377 // ?????(__NR_pivot_root, ), 1378 GENXY(__NR_mincore, sys_mincore), // 218 1379 GENX_(__NR_madvise, sys_madvise), // 219 1380 1381 GENXY(__NR_getdents64, sys_getdents64), // 220 1382 GENX_(221, sys_ni_syscall), /* unimplemented (by the kernel) */ // 221 1383 LINX_(__NR_readahead, sys_readahead), // 222 1384 GENX_(223, sys_ni_syscall), /* unimplemented (by the kernel) */ // 223 1385 LINX_(__NR_setxattr, sys_setxattr), // 224 1386 1387 LINX_(__NR_lsetxattr, sys_lsetxattr), // 225 1388 LINX_(__NR_fsetxattr, sys_fsetxattr), // 226 1389 LINXY(__NR_getxattr, sys_getxattr), // 227 1390 LINXY(__NR_lgetxattr, sys_lgetxattr), // 228 1391 LINXY(__NR_fgetxattr, sys_fgetxattr), // 229 1392 1393 LINXY(__NR_listxattr, sys_listxattr), // 230 1394 LINXY(__NR_llistxattr, sys_llistxattr), // 231 1395 LINXY(__NR_flistxattr, sys_flistxattr), // 232 1396 LINX_(__NR_removexattr, sys_removexattr), // 233 1397 LINX_(__NR_lremovexattr, sys_lremovexattr), // 234 1398 1399 LINX_(__NR_fremovexattr, sys_fremovexattr), // 235 1400 LINX_(__NR_gettid, sys_gettid), // 236 1401 LINXY(__NR_tkill, sys_tkill), // 237 1402 LINXY(__NR_futex, sys_futex), // 238 1403 LINX_(__NR_sched_setaffinity, sys_sched_setaffinity), // 239 1404 1405 LINXY(__NR_sched_getaffinity, sys_sched_getaffinity), // 240 1406 LINXY(__NR_tgkill, sys_tgkill), // 241 1407 GENX_(242, sys_ni_syscall), /* unimplemented (by the kernel) */ // 242 1408 LINXY(__NR_io_setup, sys_io_setup), // 243 1409 LINX_(__NR_io_destroy, sys_io_destroy), // 244 1410 1411 LINXY(__NR_io_getevents, sys_io_getevents), // 245 1412 LINX_(__NR_io_submit, sys_io_submit), // 246 1413 LINXY(__NR_io_cancel, sys_io_cancel), // 247 1414 LINX_(__NR_exit_group, sys_exit_group), // 248 1415 LINXY(__NR_epoll_create, sys_epoll_create), // 249 1416 1417 LINX_(__NR_epoll_ctl, sys_epoll_ctl), // 250 1418 LINXY(__NR_epoll_wait, sys_epoll_wait), // 251 1419 LINX_(__NR_set_tid_address, sys_set_tid_address), // 252 1420 PLAX_(__NR_fadvise64, sys_fadvise64), // 253 1421 LINXY(__NR_timer_create, sys_timer_create), // 254 1422 1423 LINXY(__NR_timer_settime, sys_timer_settime), // 255 1424 LINXY(__NR_timer_gettime, sys_timer_gettime), // 256 1425 LINX_(__NR_timer_getoverrun, sys_timer_getoverrun), // 257 1426 LINX_(__NR_timer_delete, sys_timer_delete), // 258 1427 LINX_(__NR_clock_settime, sys_clock_settime), // 259 1428 1429 LINXY(__NR_clock_gettime, sys_clock_gettime), // 260 1430 LINXY(__NR_clock_getres, sys_clock_getres), // 261 1431 LINXY(__NR_clock_nanosleep, sys_clock_nanosleep), // 262 1432 GENX_(263, sys_ni_syscall), /* unimplemented (by the kernel) */ // 263 1433 GENX_(264, sys_ni_syscall), /* unimplemented (by the kernel) */ // 264 1434 1435 GENXY(__NR_statfs64, sys_statfs64), // 265 1436 GENXY(__NR_fstatfs64, sys_fstatfs64), // 266 1437 // ?????(__NR_remap_file_pages, ), 1438 GENX_(268, sys_ni_syscall), /* unimplemented (by the kernel) */ // 268 1439 GENX_(269, sys_ni_syscall), /* unimplemented (by the kernel) */ // 269 1440 1441 GENX_(270, sys_ni_syscall), /* unimplemented (by the kernel) */ // 270 1442 LINXY(__NR_mq_open, sys_mq_open), // 271 1443 LINX_(__NR_mq_unlink, sys_mq_unlink), // 272 1444 LINX_(__NR_mq_timedsend, sys_mq_timedsend), // 273 1445 LINXY(__NR_mq_timedreceive, sys_mq_timedreceive), // 274 1446 1447 LINX_(__NR_mq_notify, sys_mq_notify), // 275 1448 LINXY(__NR_mq_getsetattr, sys_mq_getsetattr), // 276 1449 // ?????(__NR_kexec_load, ), 1450 LINX_(__NR_add_key, sys_add_key), // 278 1451 LINX_(__NR_request_key, sys_request_key), // 279 1452 1453 LINXY(__NR_keyctl, sys_keyctl), // 280 1454 LINXY(__NR_waitid, sys_waitid), // 281 1455 LINX_(__NR_ioprio_set, sys_ioprio_set), // 282 1456 LINX_(__NR_ioprio_get, sys_ioprio_get), // 283 1457 LINX_(__NR_inotify_init, sys_inotify_init), // 284 1458 1459 LINX_(__NR_inotify_add_watch, sys_inotify_add_watch), // 285 1460 LINX_(__NR_inotify_rm_watch, sys_inotify_rm_watch), // 286 1461 GENX_(287, sys_ni_syscall), /* unimplemented (by the kernel) */ // 287 1462 LINXY(__NR_openat, sys_openat), // 288 1463 LINX_(__NR_mkdirat, sys_mkdirat), // 289 1464 1465 LINX_(__NR_mknodat, sys_mknodat), // 290 1466 LINX_(__NR_fchownat, sys_fchownat), // 291 1467 LINX_(__NR_futimesat, sys_futimesat), // 292 1468 LINXY(__NR_newfstatat, sys_newfstatat), // 293 1469 LINX_(__NR_unlinkat, sys_unlinkat), // 294 1470 1471 LINX_(__NR_renameat, sys_renameat), // 295 1472 LINX_(__NR_linkat, sys_linkat), // 296 1473 LINX_(__NR_symlinkat, sys_symlinkat), // 297 1474 LINX_(__NR_readlinkat, sys_readlinkat), // 298 1475 LINX_(__NR_fchmodat, sys_fchmodat), // 299 1476 1477 LINX_(__NR_faccessat, sys_faccessat), // 300 1478 LINX_(__NR_pselect6, sys_pselect6), // 301 1479 LINXY(__NR_ppoll, sys_ppoll), // 302 1480 // ?????(__NR_unshare, ), 1481 LINX_(__NR_set_robust_list, sys_set_robust_list), // 304 1482 1483 LINXY(__NR_get_robust_list, sys_get_robust_list), // 305 1484 // ?????(__NR_splice, ), 1485 LINX_(__NR_sync_file_range, sys_sync_file_range), // 307 1486 // ?????(__NR_tee, ), 1487 // ?????(__NR_vmsplice, ), 1488 1489 GENX_(310, sys_ni_syscall), /* unimplemented (by the kernel) */ // 310 1490 // ?????(__NR_getcpu, ), 1491 LINXY(__NR_epoll_pwait, sys_epoll_pwait), // 312 1492 GENX_(__NR_utimes, sys_utimes), // 313 1493 LINX_(__NR_fallocate, sys_fallocate), // 314 1494 1495 LINX_(__NR_utimensat, sys_utimensat), // 315 1496 LINXY(__NR_signalfd, sys_signalfd), // 316 1497 GENX_(317, sys_ni_syscall), /* unimplemented (by the kernel) */ // 317 1498 LINX_(__NR_eventfd, sys_eventfd), // 318 1499 LINXY(__NR_timerfd_create, sys_timerfd_create), // 319 1500 1501 LINXY(__NR_timerfd_settime, sys_timerfd_settime), // 320 1502 LINXY(__NR_timerfd_gettime, sys_timerfd_gettime), // 321 1503 LINXY(__NR_signalfd4, sys_signalfd4), // 322 1504 LINX_(__NR_eventfd2, sys_eventfd2), // 323 1505 LINXY(__NR_inotify_init1, sys_inotify_init1), // 324 1506 1507 LINXY(__NR_pipe2, sys_pipe2), // 325 1508 // (__NR_dup3, ), 1509 LINXY(__NR_epoll_create1, sys_epoll_create1), // 327 1510 LINXY(__NR_preadv, sys_preadv), // 328 1511 LINX_(__NR_pwritev, sys_pwritev), // 329 1512 1513 // ?????(__NR_rt_tgsigqueueinfo, ), 1514 LINXY(__NR_perf_event_open, sys_perf_event_open), // 331 1515 // ?????(__NR_fanotify_init, ), // 332 1516 // ?????(__NR_fanotify_mark, ), // 333 1517 LINXY(__NR_prlimit64, sys_prlimit64), // 334 1518 // ?????(__NR_name_to_handle_at, ), // 335 1519 // ?????(__NR_open_by_handle_at, ), // 336 1520 // ?????(__NR_clock_adjtime, ), // 337 1521 // ?????(__NR_syncfs, ), // 338 1522 // ?????(__NR_setns, ), // 339 1523 LINXY(__NR_process_vm_readv, sys_process_vm_readv), // 340 1524 LINX_(__NR_process_vm_writev, sys_process_vm_writev), // 341 1525 }; 1526 1527 SyscallTableEntry* ML_(get_linux_syscall_entry) ( UInt sysno ) 1528 { 1529 const UInt syscall_table_size 1530 = sizeof(syscall_table) / sizeof(syscall_table[0]); 1531 1532 /* Is it in the contiguous initial section of the table? */ 1533 if (sysno < syscall_table_size) { 1534 SyscallTableEntry* sys = &syscall_table[sysno]; 1535 if (sys->before == NULL) 1536 return NULL; /* no entry */ 1537 else 1538 return sys; 1539 } 1540 1541 /* Can't find a wrapper */ 1542 return NULL; 1543 } 1544 1545 #endif 1546 1547 /*--------------------------------------------------------------------*/ 1548 /*--- end ---*/ 1549 /*--------------------------------------------------------------------*/ 1550
