1 2/*--------------------------------------------------------------------*/ 3/*--- Platform-specific syscalls stuff. syswrap-arm-linux.c -----*/ 4/*--------------------------------------------------------------------*/ 5 6/* 7 This file is part of Valgrind, a dynamic binary instrumentation 8 framework. 9 10 Copyright (C) 2000-2015 Nicholas Nethercote 11 njn@valgrind.org 12 Copyright (C) 2008-2015 Evan Geller 13 gaze@bea.ms 14 15 This program is free software; you can redistribute it and/or 16 modify it under the terms of the GNU General Public License as 17 published by the Free Software Foundation; either version 2 of the 18 License, or (at your option) any later version. 19 20 This program is distributed in the hope that it will be useful, but 21 WITHOUT ANY WARRANTY; without even the implied warranty of 22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 23 General Public License for more details. 24 25 You should have received a copy of the GNU General Public License 26 along with this program; if not, write to the Free Software 27 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 28 02111-1307, USA. 29 30 The GNU General Public License is contained in the file COPYING. 31*/ 32 33#if defined(VGP_arm_linux) 34 35#include "pub_core_basics.h" 36#include "pub_core_vki.h" 37#include "pub_core_vkiscnums.h" 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_options.h" 47#include "pub_core_scheduler.h" 48#include "pub_core_sigframe.h" // For VG_(sigframe_destroy)() 49#include "pub_core_signals.h" 50#include "pub_core_syscall.h" 51#include "pub_core_syswrap.h" 52#include "pub_core_tooliface.h" 53#include "pub_core_transtab.h" // VG_(discard_translations) 54 55#include "priv_types_n_macros.h" 56#include "priv_syswrap-generic.h" /* for decls of generic wrappers */ 57#include "priv_syswrap-linux.h" /* for decls of linux-ish wrappers */ 58#include "priv_syswrap-main.h" 59 60 61/* --------------------------------------------------------------------- 62 clone() handling 63 ------------------------------------------------------------------ */ 64 65/* Call f(arg1), but first switch stacks, using 'stack' as the new 66 stack, and use 'retaddr' as f's return-to address. Also, clear all 67 the integer registers before entering f.*/ 68__attribute__((noreturn)) 69void ML_(call_on_new_stack_0_1) ( Addr stack, 70 Addr retaddr, 71 void (*f)(Word), 72 Word arg1 ); 73// r0 = stack 74// r1 = retaddr 75// r2 = f 76// r3 = arg1 77asm( 78".text\n" 79".globl vgModuleLocal_call_on_new_stack_0_1\n" 80"vgModuleLocal_call_on_new_stack_0_1:\n" 81" mov sp,r0\n\t" /* Stack pointer */ 82" mov lr,r1\n\t" /* Return address */ 83" mov r0,r3\n\t" /* First argument */ 84" push {r2}\n\t" /* So we can ret to the new dest */ 85" mov r1, #0\n\t" /* Clear our GPRs */ 86" mov r2, #0\n\t" 87" mov r3, #0\n\t" 88" mov r4, #0\n\t" 89" mov r5, #0\n\t" 90" mov r6, #0\n\t" 91" mov r7, #0\n\t" 92" mov r8, #0\n\t" 93" mov r9, #0\n\t" 94" mov r10, #0\n\t" 95" mov r11, #0\n\t" 96" mov r12, #0\n\t" 97" pop {pc}\n\t" /* Herrre we go! */ 98".previous\n" 99); 100 101 102#define __NR_CLONE VG_STRINGIFY(__NR_clone) 103#define __NR_EXIT VG_STRINGIFY(__NR_exit) 104 105extern 106ULong do_syscall_clone_arm_linux ( Word (*fn)(void *), 107 void* stack, 108 Int flags, 109 void* arg, 110 Int* child_tid, 111 Int* parent_tid, 112 void* tls ); 113asm( 114".text\n" 115".globl do_syscall_clone_arm_linux\n" 116"do_syscall_clone_arm_linux:\n" 117 118/*Setup child stack */ 119" str r0, [r1, #-4]!\n" 120" str r3, [r1, #-4]!\n" 121" push {r4,r7}\n" 122" mov r0, r2\n" /* arg1: flags */ 123/* r1 (arg2) is already our child's stack */ 124" ldr r2, [sp, #12]\n" // parent tid 125" ldr r3, [sp, #16]\n" // tls 126" ldr r4, [sp, #8]\n" // Child tid 127" mov r7, #"__NR_CLONE"\n" 128" svc 0x00000000\n" 129" cmp r0, #0\n" 130" beq 1f\n" 131 132/* Parent */ 133" pop {r4,r7}\n" 134" bx lr\n" 135 136"1:\n" /*child*/ 137" mov lr, pc\n" 138" pop {r0,pc}\n" 139/* Retval from child is already in r0 */ 140" mov r7, #"__NR_EXIT"\n" 141" svc 0x00000000\n" 142/* Urh.. why did exit return? */ 143" .long 0\n" 144" .previous\n" 145); 146 147#undef __NR_CLONE 148#undef __NR_EXIT 149 150// forward declarations 151static void setup_child ( ThreadArchState*, ThreadArchState* ); 152static void assign_guest_tls(ThreadId ctid, Addr tlsptr); 153static SysRes sys_set_tls ( ThreadId tid, Addr tlsptr ); 154 155/* 156 When a client clones, we need to keep track of the new thread. This means: 157 1. allocate a ThreadId+ThreadState+stack for the thread 158 159 2. initialize the thread's new VCPU state 160 161 3. create the thread using the same args as the client requested, 162 but using the scheduler entrypoint for IP, and a separate stack 163 for SP. 164 */ 165static SysRes do_clone ( ThreadId ptid, 166 UInt flags, Addr sp, 167 Int *parent_tidptr, 168 Int *child_tidptr, 169 Addr child_tls) 170{ 171 ThreadId ctid = VG_(alloc_ThreadState)(); 172 ThreadState* ptst = VG_(get_ThreadState)(ptid); 173 ThreadState* ctst = VG_(get_ThreadState)(ctid); 174 UInt r0; 175 UWord *stack; 176 SysRes res; 177 vki_sigset_t blockall, savedmask; 178 179 VG_(sigfillset)(&blockall); 180 181 vg_assert(VG_(is_running_thread)(ptid)); 182 vg_assert(VG_(is_valid_tid)(ctid)); 183 184 stack = (UWord*)ML_(allocstack)(ctid); 185 186 if(stack == NULL) { 187 res = VG_(mk_SysRes_Error)( VKI_ENOMEM ); 188 goto out; 189 } 190 191 setup_child( &ctst->arch, &ptst->arch ); 192 193 ctst->arch.vex.guest_R0 = 0; 194 if(sp != 0) 195 ctst->arch.vex.guest_R13 = sp; 196 197 ctst->os_state.parent = ptid; 198 199 ctst->sig_mask = ptst->sig_mask; 200 ctst->tmp_sig_mask = ptst->sig_mask; 201 202 /* Start the child with its threadgroup being the same as the 203 parent's. This is so that any exit_group calls that happen 204 after the child is created but before it sets its 205 os_state.threadgroup field for real (in thread_wrapper in 206 syswrap-linux.c), really kill the new thread. a.k.a this avoids 207 a race condition in which the thread is unkillable (via 208 exit_group) because its threadgroup is not set. The race window 209 is probably only a few hundred or a few thousand cycles long. 210 See #226116. */ 211 ctst->os_state.threadgroup = ptst->os_state.threadgroup; 212 213 ML_(guess_and_register_stack) (sp, ctst); 214 215 vg_assert(VG_(owns_BigLock_LL)(ptid)); 216 VG_TRACK ( pre_thread_ll_create, ptid, ctid ); 217 218 if (flags & VKI_CLONE_SETTLS) { 219 /* Just assign the tls pointer in the guest TPIDRURO. */ 220 assign_guest_tls(ctid, child_tls); 221 } 222 223 flags &= ~VKI_CLONE_SETTLS; 224 225 VG_(sigprocmask)(VKI_SIG_SETMASK, &blockall, &savedmask); 226 227 r0 = do_syscall_clone_arm_linux( 228 ML_(start_thread_NORETURN), stack, flags, &VG_(threads)[ctid], 229 child_tidptr, parent_tidptr, NULL 230 ); 231 //VG_(printf)("AFTER SYSCALL, %x and %x CHILD: %d PARENT: %d\n",child_tidptr, parent_tidptr,*child_tidptr,*parent_tidptr); 232 233 res = VG_(mk_SysRes_arm_linux)( r0 ); 234 235 VG_(sigprocmask)(VKI_SIG_SETMASK, &savedmask, NULL); 236 237out: 238 if (sr_isError(res)) { 239 VG_(cleanup_thread)(&ctst->arch); 240 ctst->status = VgTs_Empty; 241 VG_TRACK( pre_thread_ll_exit, ctid ); 242 } 243 244 return res; 245} 246 247 248 249/* --------------------------------------------------------------------- 250 More thread stuff 251 ------------------------------------------------------------------ */ 252 253// ARM doesn't have any architecture specific thread stuff that 254// needs to be cleaned up 255void VG_(cleanup_thread) ( ThreadArchState* arch ) 256{ 257} 258 259void setup_child ( /*OUT*/ ThreadArchState *child, 260 /*IN*/ ThreadArchState *parent ) 261{ 262 child->vex = parent->vex; 263 child->vex_shadow1 = parent->vex_shadow1; 264 child->vex_shadow2 = parent->vex_shadow2; 265} 266 267static void assign_guest_tls(ThreadId tid, Addr tlsptr) 268{ 269 VG_(threads)[tid].arch.vex.guest_TPIDRURO = tlsptr; 270} 271 272/* Assigns tlsptr to the guest TPIDRURO. 273 If needed for the specific hardware, really executes 274 the set_tls syscall. 275*/ 276static SysRes sys_set_tls ( ThreadId tid, Addr tlsptr ) 277{ 278 assign_guest_tls(tid, tlsptr); 279 280 if (KernelVariantiS(KernelVariant_android_no_hw_tls, 281 VG_(clo_kernel_variant))) { 282 /* Android emulator does not provide an hw tls register. 283 So, the tls register is emulated by the kernel. 284 This emulated value is set by the __NR_ARM_set_tls syscall. 285 The emulated value must be read by the kernel helper function 286 located at 0xffff0fe0. 287 288 The emulated tlsptr is located at 0xffff0ff0 289 (so slightly after the kernel helper function). 290 Note that applications are not supposed to read this directly. 291 292 For compatibility : if there is a hw tls register, the kernel 293 will put at 0xffff0fe0 the instructions to read it, so 294 as to have old applications calling the kernel helper 295 working properly. 296 297 For having emulated guest TLS working correctly with 298 Valgrind, it is needed to execute the syscall to set 299 the emulated TLS value in addition to the assignment 300 of TPIDRURO. 301 302 Note: the below means that if we need thread local storage 303 for Valgrind host, then there will be a conflict between 304 the need of the guest tls and of the host tls. 305 If all the guest code would cleanly call 0xffff0fe0, 306 then we might maybe intercept this. However, at least 307 __libc_preinit reads directly 0xffff0ff0. 308 */ 309 /* ??? might call the below if auxv->u.a_val & VKI_HWCAP_TLS ??? 310 Unclear if real hardware having tls hw register sets 311 VKI_HWCAP_TLS. */ 312 return VG_(do_syscall1) (__NR_ARM_set_tls, tlsptr); 313 } else { 314 return VG_(mk_SysRes_Success)( 0 ); 315 } 316} 317 318/* --------------------------------------------------------------------- 319 PRE/POST wrappers for arm/Linux-specific syscalls 320 ------------------------------------------------------------------ */ 321 322#define PRE(name) DEFN_PRE_TEMPLATE(arm_linux, name) 323#define POST(name) DEFN_POST_TEMPLATE(arm_linux, name) 324 325/* Add prototypes for the wrappers declared here, so that gcc doesn't 326 harass us for not having prototypes. Really this is a kludge -- 327 the right thing to do is to make these wrappers 'static' since they 328 aren't visible outside this file, but that requires even more macro 329 magic. */ 330 331DECL_TEMPLATE(arm_linux, sys_mmap2); 332DECL_TEMPLATE(arm_linux, sys_stat64); 333DECL_TEMPLATE(arm_linux, sys_lstat64); 334DECL_TEMPLATE(arm_linux, sys_fstatat64); 335DECL_TEMPLATE(arm_linux, sys_fstat64); 336DECL_TEMPLATE(arm_linux, sys_clone); 337DECL_TEMPLATE(arm_linux, sys_sigreturn); 338DECL_TEMPLATE(arm_linux, sys_rt_sigreturn); 339DECL_TEMPLATE(arm_linux, sys_sigsuspend); 340DECL_TEMPLATE(arm_linux, sys_set_tls); 341DECL_TEMPLATE(arm_linux, sys_cacheflush); 342DECL_TEMPLATE(arm_linux, sys_ptrace); 343 344PRE(sys_mmap2) 345{ 346 SysRes r; 347 348 // Exactly like old_mmap() except: 349 // - all 6 args are passed in regs, rather than in a memory-block. 350 // - the file offset is specified in pagesize units rather than bytes, 351 // so that it can be used for files bigger than 2^32 bytes. 352 // pagesize or 4K-size units in offset? For ppc32/64-linux, this is 353 // 4K-sized. Assert that the page size is 4K here for safety. 354 vg_assert(VKI_PAGE_SIZE == 4096); 355 PRINT("sys_mmap2 ( %#lx, %lu, %lu, %lu, %lu, %lu )", 356 ARG1, ARG2, ARG3, ARG4, ARG5, ARG6 ); 357 PRE_REG_READ6(long, "mmap2", 358 unsigned long, start, unsigned long, length, 359 unsigned long, prot, unsigned long, flags, 360 unsigned long, fd, unsigned long, offset); 361 362 r = ML_(generic_PRE_sys_mmap)( tid, ARG1, ARG2, ARG3, ARG4, ARG5, 363 4096 * (Off64T)ARG6 ); 364 SET_STATUS_from_SysRes(r); 365} 366 367// XXX: lstat64/fstat64/stat64 are generic, but not necessarily 368// applicable to every architecture -- I think only to 32-bit archs. 369// We're going to need something like linux/core_os32.h for such 370// things, eventually, I think. --njn 371PRE(sys_lstat64) 372{ 373 PRINT("sys_lstat64 ( %#lx(%s), %#lx )", ARG1, (HChar*)ARG1, ARG2); 374 PRE_REG_READ2(long, "lstat64", char *, file_name, struct stat64 *, buf); 375 PRE_MEM_RASCIIZ( "lstat64(file_name)", ARG1 ); 376 PRE_MEM_WRITE( "lstat64(buf)", ARG2, sizeof(struct vki_stat64) ); 377} 378 379POST(sys_lstat64) 380{ 381 vg_assert(SUCCESS); 382 if (RES == 0) { 383 POST_MEM_WRITE( ARG2, sizeof(struct vki_stat64) ); 384 } 385} 386 387PRE(sys_stat64) 388{ 389 PRINT("sys_stat64 ( %#lx(%s), %#lx )", ARG1, (HChar*)ARG1, ARG2); 390 PRE_REG_READ2(long, "stat64", char *, file_name, struct stat64 *, buf); 391 PRE_MEM_RASCIIZ( "stat64(file_name)", ARG1 ); 392 PRE_MEM_WRITE( "stat64(buf)", ARG2, sizeof(struct vki_stat64) ); 393} 394 395POST(sys_stat64) 396{ 397 POST_MEM_WRITE( ARG2, sizeof(struct vki_stat64) ); 398} 399 400PRE(sys_fstatat64) 401{ 402 PRINT("sys_fstatat64 ( %ld, %#lx(%s), %#lx )", 403 SARG1, ARG2, (HChar*)ARG2, ARG3); 404 PRE_REG_READ3(long, "fstatat64", 405 int, dfd, char *, file_name, struct stat64 *, buf); 406 PRE_MEM_RASCIIZ( "fstatat64(file_name)", ARG2 ); 407 PRE_MEM_WRITE( "fstatat64(buf)", ARG3, sizeof(struct vki_stat64) ); 408} 409 410POST(sys_fstatat64) 411{ 412 POST_MEM_WRITE( ARG3, sizeof(struct vki_stat64) ); 413} 414 415PRE(sys_fstat64) 416{ 417 PRINT("sys_fstat64 ( %lu, %#lx )", ARG1, ARG2); 418 PRE_REG_READ2(long, "fstat64", unsigned long, fd, struct stat64 *, buf); 419 PRE_MEM_WRITE( "fstat64(buf)", ARG2, sizeof(struct vki_stat64) ); 420} 421 422POST(sys_fstat64) 423{ 424 POST_MEM_WRITE( ARG2, sizeof(struct vki_stat64) ); 425} 426 427PRE(sys_clone) 428{ 429 UInt cloneflags; 430 431 PRINT("sys_clone ( %lx, %#lx, %#lx, %#lx, %#lx )",ARG1,ARG2,ARG3,ARG4,ARG5); 432 PRE_REG_READ5(int, "clone", 433 unsigned long, flags, 434 void *, child_stack, 435 int *, parent_tidptr, 436 void *, child_tls, 437 int *, child_tidptr); 438 439 if (ARG1 & VKI_CLONE_PARENT_SETTID) { 440 PRE_MEM_WRITE("clone(parent_tidptr)", ARG3, sizeof(Int)); 441 if (!VG_(am_is_valid_for_client)(ARG3, sizeof(Int), 442 VKI_PROT_WRITE)) { 443 SET_STATUS_Failure( VKI_EFAULT ); 444 return; 445 } 446 } 447 if (ARG1 & (VKI_CLONE_CHILD_SETTID | VKI_CLONE_CHILD_CLEARTID)) { 448 PRE_MEM_WRITE("clone(child_tidptr)", ARG5, sizeof(Int)); 449 if (!VG_(am_is_valid_for_client)(ARG5, sizeof(Int), 450 VKI_PROT_WRITE)) { 451 SET_STATUS_Failure( VKI_EFAULT ); 452 return; 453 } 454 } 455 if (ARG1 & VKI_CLONE_SETTLS) { 456 PRE_MEM_READ("clone(tls_user_desc)", ARG4, sizeof(vki_modify_ldt_t)); 457 if (!VG_(am_is_valid_for_client)(ARG4, sizeof(vki_modify_ldt_t), 458 VKI_PROT_READ)) { 459 SET_STATUS_Failure( VKI_EFAULT ); 460 return; 461 } 462 } 463 464 cloneflags = ARG1; 465 466 if (!ML_(client_signal_OK)(ARG1 & VKI_CSIGNAL)) { 467 SET_STATUS_Failure( VKI_EINVAL ); 468 return; 469 } 470 471 /* Only look at the flags we really care about */ 472 switch (cloneflags & (VKI_CLONE_VM | VKI_CLONE_FS 473 | VKI_CLONE_FILES | VKI_CLONE_VFORK)) { 474 case VKI_CLONE_VM | VKI_CLONE_FS | VKI_CLONE_FILES: 475 /* thread creation */ 476 SET_STATUS_from_SysRes( 477 do_clone(tid, 478 ARG1, /* flags */ 479 (Addr)ARG2, /* child ESP */ 480 (Int *)ARG3, /* parent_tidptr */ 481 (Int *)ARG5, /* child_tidptr */ 482 (Addr)ARG4)); /* set_tls */ 483 break; 484 485 case VKI_CLONE_VFORK | VKI_CLONE_VM: /* vfork */ 486 /* FALLTHROUGH - assume vfork == fork */ 487 cloneflags &= ~(VKI_CLONE_VFORK | VKI_CLONE_VM); 488 489 case 0: /* plain fork */ 490 SET_STATUS_from_SysRes( 491 ML_(do_fork_clone)(tid, 492 cloneflags, /* flags */ 493 (Int *)ARG3, /* parent_tidptr */ 494 (Int *)ARG5)); /* child_tidptr */ 495 break; 496 497 default: 498 /* should we just ENOSYS? */ 499 VG_(message)(Vg_UserMsg, "Unsupported clone() flags: 0x%lx\n", ARG1); 500 VG_(message)(Vg_UserMsg, "\n"); 501 VG_(message)(Vg_UserMsg, "The only supported clone() uses are:\n"); 502 VG_(message)(Vg_UserMsg, " - via a threads library (LinuxThreads or NPTL)\n"); 503 VG_(message)(Vg_UserMsg, " - via the implementation of fork or vfork\n"); 504 VG_(message)(Vg_UserMsg, " - for the Quadrics Elan3 user-space driver\n"); 505 VG_(unimplemented) 506 ("Valgrind does not support general clone()."); 507 } 508 509 if (SUCCESS) { 510 if (ARG1 & VKI_CLONE_PARENT_SETTID) 511 POST_MEM_WRITE(ARG3, sizeof(Int)); 512 if (ARG1 & (VKI_CLONE_CHILD_SETTID | VKI_CLONE_CHILD_CLEARTID)) 513 POST_MEM_WRITE(ARG5, sizeof(Int)); 514 515 /* Thread creation was successful; let the child have the chance 516 to run */ 517 *flags |= SfYieldAfter; 518 } 519} 520 521PRE(sys_sigreturn) 522{ 523 /* See comments on PRE(sys_rt_sigreturn) in syswrap-amd64-linux.c for 524 an explanation of what follows. */ 525 526 PRINT("sys_sigreturn ( )"); 527 528 vg_assert(VG_(is_valid_tid)(tid)); 529 vg_assert(tid >= 1 && tid < VG_N_THREADS); 530 vg_assert(VG_(is_running_thread)(tid)); 531 532 /* Restore register state from frame and remove it */ 533 VG_(sigframe_destroy)(tid, False); 534 535 /* Tell the driver not to update the guest state with the "result", 536 and set a bogus result to keep it happy. */ 537 *flags |= SfNoWriteResult; 538 SET_STATUS_Success(0); 539 540 /* Check to see if any signals arose as a result of this. */ 541 *flags |= SfPollAfter; 542} 543 544PRE(sys_rt_sigreturn) 545{ 546 /* See comments on PRE(sys_rt_sigreturn) in syswrap-amd64-linux.c for 547 an explanation of what follows. */ 548 549 PRINT("rt_sigreturn ( )"); 550 551 vg_assert(VG_(is_valid_tid)(tid)); 552 vg_assert(tid >= 1 && tid < VG_N_THREADS); 553 vg_assert(VG_(is_running_thread)(tid)); 554 555 /* Restore register state from frame and remove it */ 556 VG_(sigframe_destroy)(tid, True); 557 558 /* Tell the driver not to update the guest state with the "result", 559 and set a bogus result to keep it happy. */ 560 *flags |= SfNoWriteResult; 561 SET_STATUS_Success(0); 562 563 /* Check to see if any signals arose as a result of this. */ 564 *flags |= SfPollAfter; 565} 566 567/* NB: clone of x86-linux version, and ppc32-linux has an almost 568 identical one. */ 569PRE(sys_sigsuspend) 570{ 571 /* The C library interface to sigsuspend just takes a pointer to 572 a signal mask but this system call has three arguments - the first 573 two don't appear to be used by the kernel and are always passed as 574 zero by glibc and the third is the first word of the signal mask 575 so only 32 signals are supported. 576 577 In fact glibc normally uses rt_sigsuspend if it is available as 578 that takes a pointer to the signal mask so supports more signals. 579 */ 580 *flags |= SfMayBlock; 581 PRINT("sys_sigsuspend ( %ld, %ld, %#lx )", SARG1, SARG2, ARG3 ); 582 PRE_REG_READ3(int, "sigsuspend", 583 int, history0, int, history1, 584 vki_old_sigset_t, mask); 585} 586 587/* Very much ARM specific */ 588 589PRE(sys_set_tls) 590{ 591 PRINT("set_tls (%lx)",ARG1); 592 PRE_REG_READ1(long, "set_tls", unsigned long, addr); 593 594 SET_STATUS_from_SysRes( sys_set_tls( tid, ARG1 ) ); 595} 596 597PRE(sys_cacheflush) 598{ 599 PRINT("cacheflush (%lx, %#lx, %#lx)",ARG1,ARG2,ARG3); 600 PRE_REG_READ3(long, "cacheflush", void*, addrlow,void*, addrhigh,int, flags); 601 VG_(discard_translations)( (Addr)ARG1, 602 ((ULong)ARG2) - ((ULong)ARG1) + 1ULL/*paranoia*/, 603 "PRE(sys_cacheflush)" ); 604 SET_STATUS_Success(0); 605} 606 607// ARG3 is only used for pointers into the traced process's address 608// space and for offsets into the traced process's struct 609// user_regs_struct. It is never a pointer into this process's memory 610// space, and we should therefore not check anything it points to. 611PRE(sys_ptrace) 612{ 613 PRINT("sys_ptrace ( %ld, %ld, %#lx, %#lx )", SARG1, SARG2, ARG3, ARG4); 614 PRE_REG_READ4(int, "ptrace", 615 long, request, long, pid, long, addr, long, data); 616 switch (ARG1) { 617 case VKI_PTRACE_PEEKTEXT: 618 case VKI_PTRACE_PEEKDATA: 619 case VKI_PTRACE_PEEKUSR: 620 PRE_MEM_WRITE( "ptrace(peek)", ARG4, 621 sizeof (long)); 622 break; 623 case VKI_PTRACE_GETREGS: 624 PRE_MEM_WRITE( "ptrace(getregs)", ARG4, 625 sizeof (struct vki_user_regs_struct)); 626 break; 627 case VKI_PTRACE_GETFPREGS: 628 PRE_MEM_WRITE( "ptrace(getfpregs)", ARG4, 629 sizeof (struct vki_user_fp)); 630 break; 631 case VKI_PTRACE_GETWMMXREGS: 632 PRE_MEM_WRITE( "ptrace(getwmmxregs)", ARG4, 633 VKI_IWMMXT_SIZE); 634 break; 635 case VKI_PTRACE_GETCRUNCHREGS: 636 PRE_MEM_WRITE( "ptrace(getcrunchregs)", ARG4, 637 VKI_CRUNCH_SIZE); 638 break; 639 case VKI_PTRACE_GETVFPREGS: 640 PRE_MEM_WRITE( "ptrace(getvfpregs)", ARG4, 641 sizeof (struct vki_user_vfp) ); 642 break; 643 case VKI_PTRACE_GETHBPREGS: 644 PRE_MEM_WRITE( "ptrace(gethbpregs)", ARG4, 645 sizeof (unsigned long) ); 646 break; 647 case VKI_PTRACE_SETREGS: 648 PRE_MEM_READ( "ptrace(setregs)", ARG4, 649 sizeof (struct vki_user_regs_struct)); 650 break; 651 case VKI_PTRACE_SETFPREGS: 652 PRE_MEM_READ( "ptrace(setfpregs)", ARG4, 653 sizeof (struct vki_user_fp)); 654 break; 655 case VKI_PTRACE_SETWMMXREGS: 656 PRE_MEM_READ( "ptrace(setwmmxregs)", ARG4, 657 VKI_IWMMXT_SIZE); 658 break; 659 case VKI_PTRACE_SETCRUNCHREGS: 660 PRE_MEM_READ( "ptrace(setcrunchregs)", ARG4, 661 VKI_CRUNCH_SIZE); 662 break; 663 case VKI_PTRACE_SETVFPREGS: 664 PRE_MEM_READ( "ptrace(setvfpregs)", ARG4, 665 sizeof (struct vki_user_vfp)); 666 break; 667 case VKI_PTRACE_SETHBPREGS: 668 PRE_MEM_READ( "ptrace(sethbpregs)", ARG4, sizeof(unsigned long)); 669 break; 670 case VKI_PTRACE_GET_THREAD_AREA: 671 PRE_MEM_WRITE( "ptrace(get_thread_area)", ARG4, sizeof(unsigned long)); 672 break; 673 case VKI_PTRACE_GETEVENTMSG: 674 PRE_MEM_WRITE( "ptrace(geteventmsg)", ARG4, sizeof(unsigned long)); 675 break; 676 case VKI_PTRACE_GETSIGINFO: 677 PRE_MEM_WRITE( "ptrace(getsiginfo)", ARG4, sizeof(vki_siginfo_t)); 678 break; 679 case VKI_PTRACE_SETSIGINFO: 680 PRE_MEM_READ( "ptrace(setsiginfo)", ARG4, sizeof(vki_siginfo_t)); 681 break; 682 case VKI_PTRACE_GETREGSET: 683 ML_(linux_PRE_getregset)(tid, ARG3, ARG4); 684 break; 685 case VKI_PTRACE_SETREGSET: 686 ML_(linux_PRE_setregset)(tid, ARG3, ARG4); 687 break; 688 default: 689 break; 690 } 691} 692 693POST(sys_ptrace) 694{ 695 switch (ARG1) { 696 case VKI_PTRACE_PEEKTEXT: 697 case VKI_PTRACE_PEEKDATA: 698 case VKI_PTRACE_PEEKUSR: 699 POST_MEM_WRITE( ARG4, sizeof (long)); 700 break; 701 case VKI_PTRACE_GETREGS: 702 POST_MEM_WRITE( ARG4, sizeof (struct vki_user_regs_struct)); 703 break; 704 case VKI_PTRACE_GETFPREGS: 705 POST_MEM_WRITE( ARG4, sizeof (struct vki_user_fp)); 706 break; 707 case VKI_PTRACE_GETWMMXREGS: 708 POST_MEM_WRITE( ARG4, VKI_IWMMXT_SIZE); 709 break; 710 case VKI_PTRACE_GETCRUNCHREGS: 711 POST_MEM_WRITE( ARG4, VKI_CRUNCH_SIZE); 712 break; 713 case VKI_PTRACE_GETVFPREGS: 714 POST_MEM_WRITE( ARG4, sizeof(struct vki_user_vfp)); 715 break; 716 case VKI_PTRACE_GET_THREAD_AREA: 717 case VKI_PTRACE_GETHBPREGS: 718 case VKI_PTRACE_GETEVENTMSG: 719 POST_MEM_WRITE( ARG4, sizeof(unsigned long)); 720 break; 721 case VKI_PTRACE_GETSIGINFO: 722 /* XXX: This is a simplification. Different parts of the 723 * siginfo_t are valid depending on the type of signal. 724 */ 725 POST_MEM_WRITE( ARG4, sizeof(vki_siginfo_t)); 726 break; 727 case VKI_PTRACE_GETREGSET: 728 ML_(linux_POST_getregset)(tid, ARG3, ARG4); 729 break; 730 default: 731 break; 732 } 733} 734 735#undef PRE 736#undef POST 737 738/* --------------------------------------------------------------------- 739 The arm/Linux syscall table 740 ------------------------------------------------------------------ */ 741 742#if 0 743#define __NR_OABI_SYSCALL_BASE 0x900000 744#else 745#define __NR_OABI_SYSCALL_BASE 0x0 746#endif 747 748#define PLAX_(sysno, name) WRAPPER_ENTRY_X_(arm_linux, sysno, name) 749#define PLAXY(sysno, name) WRAPPER_ENTRY_XY(arm_linux, sysno, name) 750 751// This table maps from __NR_xxx syscall numbers (from 752// linux/include/asm-arm/unistd.h) to the appropriate PRE/POST sys_foo() 753// wrappers on arm (as per sys_call_table in linux/arch/arm/kernel/entry.S). 754// 755// For those syscalls not handled by Valgrind, the annotation indicate its 756// arch/OS combination, eg. */* (generic), */Linux (Linux only), ?/? 757// (unknown). 758 759static SyscallTableEntry syscall_main_table[] = { 760//zz // (restart_syscall) // 0 761 GENX_(__NR_exit, sys_exit), // 1 762 GENX_(__NR_fork, sys_fork), // 2 763 GENXY(__NR_read, sys_read), // 3 764 GENX_(__NR_write, sys_write), // 4 765 766 GENXY(__NR_open, sys_open), // 5 767 GENXY(__NR_close, sys_close), // 6 768// GENXY(__NR_waitpid, sys_waitpid), // 7 769 GENXY(__NR_creat, sys_creat), // 8 770 GENX_(__NR_link, sys_link), // 9 771 772 GENX_(__NR_unlink, sys_unlink), // 10 773 GENX_(__NR_execve, sys_execve), // 11 774 GENX_(__NR_chdir, sys_chdir), // 12 775 GENXY(__NR_time, sys_time), // 13 776 GENX_(__NR_mknod, sys_mknod), // 14 777 778 GENX_(__NR_chmod, sys_chmod), // 15 779//zz LINX_(__NR_lchown, sys_lchown16), // 16 780// GENX_(__NR_break, sys_ni_syscall), // 17 781//zz // (__NR_oldstat, sys_stat), // 18 (obsolete) 782 LINX_(__NR_lseek, sys_lseek), // 19 783 784 GENX_(__NR_getpid, sys_getpid), // 20 785 LINX_(__NR_mount, sys_mount), // 21 786 LINX_(__NR_umount, sys_oldumount), // 22 787 LINX_(__NR_setuid, sys_setuid16), // 23 ## P 788 LINX_(__NR_getuid, sys_getuid16), // 24 ## P 789//zz 790//zz // (__NR_stime, sys_stime), // 25 * (SVr4,SVID,X/OPEN) 791 PLAXY(__NR_ptrace, sys_ptrace), // 26 792 GENX_(__NR_alarm, sys_alarm), // 27 793//zz // (__NR_oldfstat, sys_fstat), // 28 * L -- obsolete 794 GENX_(__NR_pause, sys_pause), // 29 795 796 LINX_(__NR_utime, sys_utime), // 30 797// GENX_(__NR_stty, sys_ni_syscall), // 31 798// GENX_(__NR_gtty, sys_ni_syscall), // 32 799 GENX_(__NR_access, sys_access), // 33 800 GENX_(__NR_nice, sys_nice), // 34 801 802// GENX_(__NR_ftime, sys_ni_syscall), // 35 803 GENX_(__NR_sync, sys_sync), // 36 804 GENX_(__NR_kill, sys_kill), // 37 805 GENX_(__NR_rename, sys_rename), // 38 806 GENX_(__NR_mkdir, sys_mkdir), // 39 807 808 GENX_(__NR_rmdir, sys_rmdir), // 40 809 GENXY(__NR_dup, sys_dup), // 41 810 LINXY(__NR_pipe, sys_pipe), // 42 811 GENXY(__NR_times, sys_times), // 43 812// GENX_(__NR_prof, sys_ni_syscall), // 44 813//zz 814 GENX_(__NR_brk, sys_brk), // 45 815 LINX_(__NR_setgid, sys_setgid16), // 46 816 LINX_(__NR_getgid, sys_getgid16), // 47 817//zz // (__NR_signal, sys_signal), // 48 */* (ANSI C) 818 LINX_(__NR_geteuid, sys_geteuid16), // 49 819 820 LINX_(__NR_getegid, sys_getegid16), // 50 821 GENX_(__NR_acct, sys_acct), // 51 822 LINX_(__NR_umount2, sys_umount), // 52 823// GENX_(__NR_lock, sys_ni_syscall), // 53 824 LINXY(__NR_ioctl, sys_ioctl), // 54 825 826 LINXY(__NR_fcntl, sys_fcntl), // 55 827// GENX_(__NR_mpx, sys_ni_syscall), // 56 828 GENX_(__NR_setpgid, sys_setpgid), // 57 829// GENX_(__NR_ulimit, sys_ni_syscall), // 58 830//zz // (__NR_oldolduname, sys_olduname), // 59 Linux -- obsolete 831//zz 832 GENX_(__NR_umask, sys_umask), // 60 833 GENX_(__NR_chroot, sys_chroot), // 61 834//zz // (__NR_ustat, sys_ustat) // 62 SVr4 -- deprecated 835 GENXY(__NR_dup2, sys_dup2), // 63 836 GENX_(__NR_getppid, sys_getppid), // 64 837 838 GENX_(__NR_getpgrp, sys_getpgrp), // 65 839 GENX_(__NR_setsid, sys_setsid), // 66 840 LINXY(__NR_sigaction, sys_sigaction), // 67 841//zz // (__NR_sgetmask, sys_sgetmask), // 68 */* (ANSI C) 842//zz // (__NR_ssetmask, sys_ssetmask), // 69 */* (ANSI C) 843//zz 844 LINX_(__NR_setreuid, sys_setreuid16), // 70 845 LINX_(__NR_setregid, sys_setregid16), // 71 846 PLAX_(__NR_sigsuspend, sys_sigsuspend), // 72 847 LINXY(__NR_sigpending, sys_sigpending), // 73 848//zz // (__NR_sethostname, sys_sethostname), // 74 */* 849//zz 850 GENX_(__NR_setrlimit, sys_setrlimit), // 75 851 GENXY(__NR_getrlimit, sys_old_getrlimit), // 76 852 GENXY(__NR_getrusage, sys_getrusage), // 77 853 GENXY(__NR_gettimeofday, sys_gettimeofday), // 78 854 GENX_(__NR_settimeofday, sys_settimeofday), // 79 855 856 LINXY(__NR_getgroups, sys_getgroups16), // 80 857 LINX_(__NR_setgroups, sys_setgroups16), // 81 858// PLAX_(__NR_select, old_select), // 82 859 GENX_(__NR_symlink, sys_symlink), // 83 860//zz // (__NR_oldlstat, sys_lstat), // 84 -- obsolete 861//zz 862 GENX_(__NR_readlink, sys_readlink), // 85 863//zz // (__NR_uselib, sys_uselib), // 86 */Linux 864//zz // (__NR_swapon, sys_swapon), // 87 */Linux 865//zz // (__NR_reboot, sys_reboot), // 88 */Linux 866//zz // (__NR_readdir, old_readdir), // 89 -- superseded 867//zz 868// _____(__NR_mmap, old_mmap), // 90 869 GENXY(__NR_munmap, sys_munmap), // 91 870 GENX_(__NR_truncate, sys_truncate), // 92 871 GENX_(__NR_ftruncate, sys_ftruncate), // 93 872 GENX_(__NR_fchmod, sys_fchmod), // 94 873 874 LINX_(__NR_fchown, sys_fchown16), // 95 875 GENX_(__NR_getpriority, sys_getpriority), // 96 876 GENX_(__NR_setpriority, sys_setpriority), // 97 877// GENX_(__NR_profil, sys_ni_syscall), // 98 878 GENXY(__NR_statfs, sys_statfs), // 99 879 880 GENXY(__NR_fstatfs, sys_fstatfs), // 100 881// LINX_(__NR_ioperm, sys_ioperm), // 101 882 LINXY(__NR_socketcall, sys_socketcall), // 102 883 LINXY(__NR_syslog, sys_syslog), // 103 884 GENXY(__NR_setitimer, sys_setitimer), // 104 885 886 GENXY(__NR_getitimer, sys_getitimer), // 105 887 GENXY(__NR_stat, sys_newstat), // 106 888 GENXY(__NR_lstat, sys_newlstat), // 107 889 GENXY(__NR_fstat, sys_newfstat), // 108 890//zz // (__NR_olduname, sys_uname), // 109 -- obsolete 891//zz 892// GENX_(__NR_iopl, sys_iopl), // 110 893 LINX_(__NR_vhangup, sys_vhangup), // 111 894// GENX_(__NR_idle, sys_ni_syscall), // 112 895// PLAXY(__NR_vm86old, sys_vm86old), // 113 __NR_syscall... weird 896 GENXY(__NR_wait4, sys_wait4), // 114 897//zz 898//zz // (__NR_swapoff, sys_swapoff), // 115 */Linux 899 LINXY(__NR_sysinfo, sys_sysinfo), // 116 900// _____(__NR_ipc, sys_ipc), // 117 901 GENX_(__NR_fsync, sys_fsync), // 118 902 PLAX_(__NR_sigreturn, sys_sigreturn), // 119 ?/Linux 903 904 PLAX_(__NR_clone, sys_clone), // 120 905//zz // (__NR_setdomainname, sys_setdomainname), // 121 */*(?) 906 GENXY(__NR_uname, sys_newuname), // 122 907// PLAX_(__NR_modify_ldt, sys_modify_ldt), // 123 908//zz LINXY(__NR_adjtimex, sys_adjtimex), // 124 909//zz 910 GENXY(__NR_mprotect, sys_mprotect), // 125 911 LINXY(__NR_sigprocmask, sys_sigprocmask), // 126 912//zz // Nb: create_module() was removed 2.4-->2.6 913// GENX_(__NR_create_module, sys_ni_syscall), // 127 914 LINX_(__NR_init_module, sys_init_module), // 128 915 LINX_(__NR_delete_module, sys_delete_module), // 129 916//zz 917//zz // Nb: get_kernel_syms() was removed 2.4-->2.6 918// GENX_(__NR_get_kernel_syms, sys_ni_syscall), // 130 919 LINX_(__NR_quotactl, sys_quotactl), // 131 920 GENX_(__NR_getpgid, sys_getpgid), // 132 921 GENX_(__NR_fchdir, sys_fchdir), // 133 922//zz // (__NR_bdflush, sys_bdflush), // 134 */Linux 923//zz 924//zz // (__NR_sysfs, sys_sysfs), // 135 SVr4 925 LINX_(__NR_personality, sys_personality), // 136 926// GENX_(__NR_afs_syscall, sys_ni_syscall), // 137 927 LINX_(__NR_setfsuid, sys_setfsuid16), // 138 928 LINX_(__NR_setfsgid, sys_setfsgid16), // 139 929 930 LINXY(__NR__llseek, sys_llseek), // 140 931 GENXY(__NR_getdents, sys_getdents), // 141 932 GENX_(__NR__newselect, sys_select), // 142 933 GENX_(__NR_flock, sys_flock), // 143 934 GENX_(__NR_msync, sys_msync), // 144 935 936 GENXY(__NR_readv, sys_readv), // 145 937 GENX_(__NR_writev, sys_writev), // 146 938 GENX_(__NR_getsid, sys_getsid), // 147 939 GENX_(__NR_fdatasync, sys_fdatasync), // 148 940 LINXY(__NR__sysctl, sys_sysctl), // 149 941 942 GENX_(__NR_mlock, sys_mlock), // 150 943 GENX_(__NR_munlock, sys_munlock), // 151 944 GENX_(__NR_mlockall, sys_mlockall), // 152 945 LINX_(__NR_munlockall, sys_munlockall), // 153 946 LINXY(__NR_sched_setparam, sys_sched_setparam), // 154 947 948 LINXY(__NR_sched_getparam, sys_sched_getparam), // 155 949 LINX_(__NR_sched_setscheduler, sys_sched_setscheduler), // 156 950 LINX_(__NR_sched_getscheduler, sys_sched_getscheduler), // 157 951 LINX_(__NR_sched_yield, sys_sched_yield), // 158 952 LINX_(__NR_sched_get_priority_max, sys_sched_get_priority_max),// 159 953 954 LINX_(__NR_sched_get_priority_min, sys_sched_get_priority_min),// 160 955//zz //LINX?(__NR_sched_rr_get_interval, sys_sched_rr_get_interval), // 161 */* 956 GENXY(__NR_nanosleep, sys_nanosleep), // 162 957 GENX_(__NR_mremap, sys_mremap), // 163 958 LINX_(__NR_setresuid, sys_setresuid16), // 164 959 960 LINXY(__NR_getresuid, sys_getresuid16), // 165 961// PLAXY(__NR_vm86, sys_vm86), // 166 x86/Linux-only 962// GENX_(__NR_query_module, sys_ni_syscall), // 167 963 GENXY(__NR_poll, sys_poll), // 168 964//zz // (__NR_nfsservctl, sys_nfsservctl), // 169 */Linux 965//zz 966 LINX_(__NR_setresgid, sys_setresgid16), // 170 967 LINXY(__NR_getresgid, sys_getresgid16), // 171 968 LINXY(__NR_prctl, sys_prctl), // 172 969 PLAX_(__NR_rt_sigreturn, sys_rt_sigreturn), // 173 970 LINXY(__NR_rt_sigaction, sys_rt_sigaction), // 174 971 972 LINXY(__NR_rt_sigprocmask, sys_rt_sigprocmask), // 175 973 LINXY(__NR_rt_sigpending, sys_rt_sigpending), // 176 974 LINXY(__NR_rt_sigtimedwait, sys_rt_sigtimedwait),// 177 975 LINXY(__NR_rt_sigqueueinfo, sys_rt_sigqueueinfo),// 178 976 LINX_(__NR_rt_sigsuspend, sys_rt_sigsuspend), // 179 977 978 GENXY(__NR_pread64, sys_pread64), // 180 979 GENX_(__NR_pwrite64, sys_pwrite64), // 181 980 LINX_(__NR_chown, sys_chown16), // 182 981 GENXY(__NR_getcwd, sys_getcwd), // 183 982 LINXY(__NR_capget, sys_capget), // 184 983 984 LINX_(__NR_capset, sys_capset), // 185 985 GENXY(__NR_sigaltstack, sys_sigaltstack), // 186 986 LINXY(__NR_sendfile, sys_sendfile), // 187 987// GENXY(__NR_getpmsg, sys_getpmsg), // 188 988// GENX_(__NR_putpmsg, sys_putpmsg), // 189 989 990 // Nb: we treat vfork as fork 991 GENX_(__NR_vfork, sys_fork), // 190 992 GENXY(__NR_ugetrlimit, sys_getrlimit), // 191 993 PLAX_(__NR_mmap2, sys_mmap2), // 192 994 GENX_(__NR_truncate64, sys_truncate64), // 193 995 GENX_(__NR_ftruncate64, sys_ftruncate64), // 194 996 997 PLAXY(__NR_stat64, sys_stat64), // 195 998 PLAXY(__NR_lstat64, sys_lstat64), // 196 999 PLAXY(__NR_fstat64, sys_fstat64), // 197 1000 GENX_(__NR_lchown32, sys_lchown), // 198 1001 GENX_(__NR_getuid32, sys_getuid), // 199 1002 1003 GENX_(__NR_getgid32, sys_getgid), // 200 1004 GENX_(__NR_geteuid32, sys_geteuid), // 201 1005 GENX_(__NR_getegid32, sys_getegid), // 202 1006 GENX_(__NR_setreuid32, sys_setreuid), // 203 1007 GENX_(__NR_setregid32, sys_setregid), // 204 1008 1009 GENXY(__NR_getgroups32, sys_getgroups), // 205 1010 GENX_(__NR_setgroups32, sys_setgroups), // 206 1011 GENX_(__NR_fchown32, sys_fchown), // 207 1012 LINX_(__NR_setresuid32, sys_setresuid), // 208 1013 LINXY(__NR_getresuid32, sys_getresuid), // 209 1014 1015 LINX_(__NR_setresgid32, sys_setresgid), // 210 1016 LINXY(__NR_getresgid32, sys_getresgid), // 211 1017 GENX_(__NR_chown32, sys_chown), // 212 1018 GENX_(__NR_setuid32, sys_setuid), // 213 1019 GENX_(__NR_setgid32, sys_setgid), // 214 1020 1021 LINX_(__NR_setfsuid32, sys_setfsuid), // 215 1022 LINX_(__NR_setfsgid32, sys_setfsgid), // 216 1023 LINX_(__NR_pivot_root, sys_pivot_root), // 217 1024 GENXY(__NR_mincore, sys_mincore), // 218 1025 GENX_(__NR_madvise, sys_madvise), // 219 1026 1027 GENXY(__NR_getdents64, sys_getdents64), // 220 1028 LINXY(__NR_fcntl64, sys_fcntl64), // 221 1029// GENX_(222, sys_ni_syscall), // 222 1030// PLAXY(223, sys_syscall223), // 223 // sys_bproc? 1031 LINX_(__NR_gettid, sys_gettid), // 224 1032 1033 LINX_(__NR_readahead, sys_readahead), // 225 */Linux 1034 LINX_(__NR_setxattr, sys_setxattr), // 226 1035 LINX_(__NR_lsetxattr, sys_lsetxattr), // 227 1036 LINX_(__NR_fsetxattr, sys_fsetxattr), // 228 1037 LINXY(__NR_getxattr, sys_getxattr), // 229 1038 1039 LINXY(__NR_lgetxattr, sys_lgetxattr), // 230 1040 LINXY(__NR_fgetxattr, sys_fgetxattr), // 231 1041 LINXY(__NR_listxattr, sys_listxattr), // 232 1042 LINXY(__NR_llistxattr, sys_llistxattr), // 233 1043 LINXY(__NR_flistxattr, sys_flistxattr), // 234 1044 1045 LINX_(__NR_removexattr, sys_removexattr), // 235 1046 LINX_(__NR_lremovexattr, sys_lremovexattr), // 236 1047 LINX_(__NR_fremovexattr, sys_fremovexattr), // 237 1048 LINXY(__NR_tkill, sys_tkill), // 238 */Linux 1049 LINXY(__NR_sendfile64, sys_sendfile64), // 239 1050 1051 LINXY(__NR_futex, sys_futex), // 240 1052 LINX_(__NR_sched_setaffinity, sys_sched_setaffinity), // 241 1053 LINXY(__NR_sched_getaffinity, sys_sched_getaffinity), // 242 1054// PLAX_(__NR_set_thread_area, sys_set_thread_area), // 243 1055// PLAX_(__NR_get_thread_area, sys_get_thread_area), // 244 1056 1057 LINXY(__NR_io_setup, sys_io_setup), // 245 1058 LINX_(__NR_io_destroy, sys_io_destroy), // 246 1059 LINXY(__NR_io_getevents, sys_io_getevents), // 247 1060 LINX_(__NR_io_submit, sys_io_submit), // 248 1061 LINXY(__NR_io_cancel, sys_io_cancel), // 249 1062 1063// LINX_(__NR_fadvise64, sys_fadvise64), // 250 */(Linux?) 1064 GENX_(251, sys_ni_syscall), // 251 1065 LINX_(__NR_exit_group, sys_exit_group), // 252 1066// GENXY(__NR_lookup_dcookie, sys_lookup_dcookie), // 253 1067 LINXY(__NR_epoll_create, sys_epoll_create), // 254 1068 1069 LINX_(__NR_epoll_ctl, sys_epoll_ctl), // 255 1070 LINXY(__NR_epoll_wait, sys_epoll_wait), // 256 1071//zz // (__NR_remap_file_pages, sys_remap_file_pages), // 257 */Linux 1072 LINX_(__NR_set_tid_address, sys_set_tid_address), // 258 1073 LINXY(__NR_timer_create, sys_timer_create), // 259 1074 1075 LINXY(__NR_timer_settime, sys_timer_settime), // (timer_create+1) 1076 LINXY(__NR_timer_gettime, sys_timer_gettime), // (timer_create+2) 1077 LINX_(__NR_timer_getoverrun, sys_timer_getoverrun),//(timer_create+3) 1078 LINX_(__NR_timer_delete, sys_timer_delete), // (timer_create+4) 1079 LINX_(__NR_clock_settime, sys_clock_settime), // (timer_create+5) 1080 1081 LINXY(__NR_clock_gettime, sys_clock_gettime), // (timer_create+6) 1082 LINXY(__NR_clock_getres, sys_clock_getres), // (timer_create+7) 1083 LINXY(__NR_clock_nanosleep, sys_clock_nanosleep),// (timer_create+8) */* 1084 GENXY(__NR_statfs64, sys_statfs64), // 268 1085 GENXY(__NR_fstatfs64, sys_fstatfs64), // 269 1086 1087 LINX_(__NR_tgkill, sys_tgkill), // 270 */Linux 1088 GENX_(__NR_utimes, sys_utimes), // 271 1089 GENX_(__NR_vserver, sys_ni_syscall), // 273 1090 LINX_(__NR_mbind, sys_mbind), // 274 ?/? 1091 1092 LINXY(__NR_get_mempolicy, sys_get_mempolicy), // 275 ?/? 1093 LINX_(__NR_set_mempolicy, sys_set_mempolicy), // 276 ?/? 1094 LINXY(__NR_mq_open, sys_mq_open), // 277 1095 LINX_(__NR_mq_unlink, sys_mq_unlink), // (mq_open+1) 1096 LINX_(__NR_mq_timedsend, sys_mq_timedsend), // (mq_open+2) 1097 1098 LINXY(__NR_mq_timedreceive, sys_mq_timedreceive),// (mq_open+3) 1099 LINX_(__NR_mq_notify, sys_mq_notify), // (mq_open+4) 1100 LINXY(__NR_mq_getsetattr, sys_mq_getsetattr), // (mq_open+5) 1101 LINXY(__NR_waitid, sys_waitid), // 280 1102 1103 LINXY(__NR_socket, sys_socket), // 281 1104 LINX_(__NR_bind, sys_bind), // 282 1105 LINX_(__NR_connect, sys_connect), // 283 1106 LINX_(__NR_listen, sys_listen), // 284 1107 LINXY(__NR_accept, sys_accept), // 285 1108 LINXY(__NR_getsockname, sys_getsockname), // 286 1109 LINXY(__NR_getpeername, sys_getpeername), // 287 1110 LINXY(__NR_socketpair, sys_socketpair), // 288 1111 LINX_(__NR_send, sys_send), 1112 LINX_(__NR_sendto, sys_sendto), // 290 1113 LINXY(__NR_recv, sys_recv), 1114 LINXY(__NR_recvfrom, sys_recvfrom), // 292 1115 LINX_(__NR_shutdown, sys_shutdown), // 293 1116 LINX_(__NR_setsockopt, sys_setsockopt), // 294 1117 LINXY(__NR_getsockopt, sys_getsockopt), // 295 1118 LINX_(__NR_sendmsg, sys_sendmsg), // 296 1119 LINXY(__NR_recvmsg, sys_recvmsg), // 297 1120 LINX_(__NR_semop, sys_semop), // 298 1121 LINX_(__NR_semget, sys_semget), // 299 1122 LINXY(__NR_semctl, sys_semctl), // 300 1123 LINX_(__NR_msgget, sys_msgget), 1124 LINX_(__NR_msgsnd, sys_msgsnd), 1125 LINXY(__NR_msgrcv, sys_msgrcv), 1126 LINXY(__NR_msgctl, sys_msgctl), // 304 1127 LINX_(__NR_semtimedop, sys_semtimedop), // 312 1128 1129 LINX_(__NR_add_key, sys_add_key), // 286 1130 LINX_(__NR_request_key, sys_request_key), // 287 1131 LINXY(__NR_keyctl, sys_keyctl), // not 288... 1132// LINX_(__NR_ioprio_set, sys_ioprio_set), // 289 1133 1134// LINX_(__NR_ioprio_get, sys_ioprio_get), // 290 1135 LINX_(__NR_inotify_init, sys_inotify_init), // 291 1136 LINX_(__NR_inotify_add_watch, sys_inotify_add_watch), // 292 1137 LINX_(__NR_inotify_rm_watch, sys_inotify_rm_watch), // 293 1138// LINX_(__NR_migrate_pages, sys_migrate_pages), // 294 1139 1140 LINXY(__NR_openat, sys_openat), // 295 1141 LINX_(__NR_mkdirat, sys_mkdirat), // 296 1142 LINX_(__NR_mknodat, sys_mknodat), // 297 1143 LINX_(__NR_fchownat, sys_fchownat), // 298 1144 LINX_(__NR_futimesat, sys_futimesat), // 326 on arm 1145 1146 PLAXY(__NR_fstatat64, sys_fstatat64), // 300 1147 LINX_(__NR_unlinkat, sys_unlinkat), // 301 1148 LINX_(__NR_renameat, sys_renameat), // 302 1149 LINX_(__NR_linkat, sys_linkat), // 303 1150 LINX_(__NR_symlinkat, sys_symlinkat), // 304 1151 1152 LINX_(__NR_readlinkat, sys_readlinkat), // 1153 LINX_(__NR_fchmodat, sys_fchmodat), // 1154 LINX_(__NR_faccessat, sys_faccessat), // 1155 LINXY(__NR_shmat, wrap_sys_shmat), //305 1156 LINXY(__NR_shmdt, sys_shmdt), //306 1157 LINX_(__NR_shmget, sys_shmget), //307 1158 LINXY(__NR_shmctl, sys_shmctl), // 308 1159// LINX_(__NR_pselect6, sys_pselect6), // 1160 1161 LINX_(__NR_unshare, sys_unshare), // 310 1162 LINX_(__NR_set_robust_list, sys_set_robust_list), // 311 1163 LINXY(__NR_get_robust_list, sys_get_robust_list), // 312 1164// LINX_(__NR_splice, sys_ni_syscall), // 313 1165// LINX_(__NR_sync_file_range, sys_sync_file_range), // 314 1166 1167// LINX_(__NR_tee, sys_ni_syscall), // 315 1168// LINX_(__NR_vmsplice, sys_ni_syscall), // 316 1169 LINXY(__NR_move_pages, sys_move_pages), // 317 1170// LINX_(__NR_getcpu, sys_ni_syscall), // 318 1171 1172 LINX_(__NR_utimensat, sys_utimensat), // 320 1173 LINXY(__NR_signalfd, sys_signalfd), // 321 1174 LINXY(__NR_timerfd_create, sys_timerfd_create), // 322 1175 LINXY(__NR_eventfd, sys_eventfd), // 323 1176 1177 LINXY(__NR_timerfd_settime, sys_timerfd_settime), // 325 1178 LINXY(__NR_timerfd_gettime, sys_timerfd_gettime), // 326 1179 1180 /////////////// 1181 1182 // JRS 2010-Jan-03: I believe that all the numbers listed 1183 // in comments in the table prior to this point (eg "// 326", 1184 // etc) are bogus since it looks to me like they are copied 1185 // verbatim from syswrap-x86-linux.c and they certainly do not 1186 // correspond to what's in include/vki/vki-scnums-arm-linux.h. 1187 // From here onwards, please ensure the numbers are correct. 1188 1189 LINX_(__NR_arm_fadvise64_64, sys_fadvise64_64), // 270 */(Linux?) 1190 1191 LINX_(__NR_pselect6, sys_pselect6), // 335 1192 LINXY(__NR_ppoll, sys_ppoll), // 336 1193 1194 LINXY(__NR_epoll_pwait, sys_epoll_pwait), // 346 1195 1196 LINX_(__NR_fallocate, sys_fallocate), // 352 1197 1198 LINXY(__NR_signalfd4, sys_signalfd4), // 355 1199 LINXY(__NR_eventfd2, sys_eventfd2), // 356 1200 LINXY(__NR_epoll_create1, sys_epoll_create1), // 357 1201 LINXY(__NR_dup3, sys_dup3), // 358 1202 LINXY(__NR_pipe2, sys_pipe2), // 359 1203 LINXY(__NR_inotify_init1, sys_inotify_init1), // 360 1204 LINXY(__NR_preadv, sys_preadv), // 361 1205 LINX_(__NR_pwritev, sys_pwritev), // 362 1206 LINXY(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo),// 363 1207 LINXY(__NR_perf_event_open, sys_perf_event_open), // 364 1208 LINXY(__NR_recvmmsg, sys_recvmmsg), // 365 1209 LINXY(__NR_accept4, sys_accept4), // 366 1210 LINXY(__NR_fanotify_init, sys_fanotify_init), // 367 1211 LINX_(__NR_fanotify_mark, sys_fanotify_mark), // 368 1212 LINXY(__NR_prlimit64, sys_prlimit64), // 369 1213 LINXY(__NR_name_to_handle_at, sys_name_to_handle_at),// 370 1214 LINXY(__NR_open_by_handle_at, sys_open_by_handle_at),// 371 1215 LINXY(__NR_clock_adjtime, sys_clock_adjtime), // 372 1216 LINX_(__NR_syncfs, sys_syncfs), // 373 1217 LINXY(__NR_sendmmsg, sys_sendmmsg), // 374 1218 1219 LINXY(__NR_process_vm_readv, sys_process_vm_readv), // 376 1220 LINX_(__NR_process_vm_writev, sys_process_vm_writev),// 377 1221 1222 LINXY(__NR_getrandom, sys_getrandom), // 384 1223 LINXY(__NR_memfd_create, sys_memfd_create) // 385 1224}; 1225 1226 1227/* These are not in the main table because there indexes are not small 1228 integers, but rather values close to one million. So their 1229 inclusion would force the main table to be huge (about 8 MB). */ 1230 1231static SyscallTableEntry ste___ARM_set_tls 1232 = { WRAPPER_PRE_NAME(arm_linux,sys_set_tls), NULL }; 1233 1234static SyscallTableEntry ste___ARM_cacheflush 1235 = { WRAPPER_PRE_NAME(arm_linux,sys_cacheflush), NULL }; 1236 1237SyscallTableEntry* ML_(get_linux_syscall_entry) ( UInt sysno ) 1238{ 1239 const UInt syscall_main_table_size 1240 = sizeof(syscall_main_table) / sizeof(syscall_main_table[0]); 1241 1242 /* Is it in the contiguous initial section of the table? */ 1243 if (sysno < syscall_main_table_size) { 1244 SyscallTableEntry* sys = &syscall_main_table[sysno]; 1245 if (sys->before == NULL) 1246 return NULL; /* no entry */ 1247 else 1248 return sys; 1249 } 1250 1251 /* Check if it's one of the out-of-line entries. */ 1252 switch (sysno) { 1253 case __NR_ARM_set_tls: return &ste___ARM_set_tls; 1254 case __NR_ARM_cacheflush: return &ste___ARM_cacheflush; 1255 default: break; 1256 } 1257 1258 /* Can't find a wrapper */ 1259 return NULL; 1260} 1261 1262#endif // defined(VGP_arm_linux) 1263 1264/*--------------------------------------------------------------------*/ 1265/*--- end syswrap-arm-linux.c ---*/ 1266/*--------------------------------------------------------------------*/ 1267