1 2 /*--------------------------------------------------------------------*/ 3 /*--- System call wrappers, etc. pub_core_syswrap.h ---*/ 4 /*--------------------------------------------------------------------*/ 5 6 /* 7 This file is part of Valgrind, a dynamic binary instrumentation 8 framework. 9 10 Copyright (C) 2000-2017 Julian Seward 11 jseward (at) acm.org 12 13 This program is free software; you can redistribute it and/or 14 modify it under the terms of the GNU General Public License as 15 published by the Free Software Foundation; either version 2 of the 16 License, or (at your option) any later version. 17 18 This program is distributed in the hope that it will be useful, but 19 WITHOUT ANY WARRANTY; without even the implied warranty of 20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 General Public License for more details. 22 23 You should have received a copy of the GNU General Public License 24 along with this program; if not, write to the Free Software 25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 26 02111-1307, USA. 27 28 The GNU General Public License is contained in the file COPYING. 29 */ 30 31 #ifndef __PUB_CORE_SYSWRAP_H 32 #define __PUB_CORE_SYSWRAP_H 33 34 #include "pub_core_basics.h" // VG_ macro 35 #include "pub_core_threadstate.h" // ThreadArchState 36 #include "pub_core_tooliface.h" // CorePart 37 38 //-------------------------------------------------------------------- 39 // PURPOSE: This module contains all the syscall junk: mostly PRE/POST 40 // wrappers, but also the main syscall jacketing code. 41 //-------------------------------------------------------------------- 42 43 // Allocates a stack for the first thread, then runs it, 44 // as if the thread had been set up by clone() 45 extern void VG_(main_thread_wrapper_NORETURN)(ThreadId tid); 46 47 extern void VG_(client_syscall) ( ThreadId tid, UInt trc ); 48 49 extern void VG_(post_syscall) ( ThreadId tid ); 50 51 /* Clear this module's private state for thread 'tid' */ 52 extern void VG_(clear_syscallInfo) ( Int tid ); 53 54 // Returns True if the given thread is currently in a system call 55 extern Bool VG_(is_in_syscall) ( Int tid ); 56 57 // Fix up a thread's state when syscall is interrupted by a signal. 58 extern void VG_(fixup_guest_state_after_syscall_interrupted)( 59 ThreadId tid, 60 Addr ip, 61 SysRes sysret, 62 Bool restart, 63 struct vki_ucontext *uc 64 ); 65 66 #if defined(VGO_solaris) 67 // Determine if in a blocking syscall. 68 extern Bool VG_(is_ip_in_blocking_syscall)(ThreadId tid, Addr ip); 69 #endif 70 71 // Wait until all other threads are dead 72 extern void VG_(reap_threads)(ThreadId self); 73 74 // Release resources held by this thread 75 extern void VG_(cleanup_thread) ( ThreadArchState* ); 76 77 /* fd leakage calls. */ 78 extern void VG_(init_preopened_fds) ( void ); 79 extern void VG_(show_open_fds) ( const HChar* when ); 80 81 // When the final thread is done, where shall I call to shutdown the 82 // system cleanly? Is set once at startup (in m_main) and never 83 // changes after that. Is basically a pointer to the exit 84 // continuation. This is all just a nasty hack to avoid calling 85 // directly from m_syswrap to m_main at exit, since that would cause 86 // m_main to become part of a module cycle, which is silly. 87 extern void (* VG_(address_of_m_main_shutdown_actions_NORETURN) ) 88 (ThreadId,VgSchedReturnCode); 89 90 #if defined(VGO_solaris) 91 extern void VG_(save_context)(ThreadId tid, vki_ucontext_t *uc, 92 CorePart part); 93 extern void VG_(restore_context)(ThreadId tid, vki_ucontext_t *uc, 94 CorePart part, Bool esp_is_thrptr); 95 extern void VG_(syswrap_init)(void); 96 extern void VG_(change_mapping_ownership)(Addr addr, Bool once_only); 97 extern Bool VG_(setup_client_dataseg)(void); 98 extern void VG_(track_client_dataseg)(ThreadId tid); 99 #endif 100 101 #endif // __PUB_CORE_SYSWRAP_H 102 103 /*--------------------------------------------------------------------*/ 104 /*--- end ---*/ 105 /*--------------------------------------------------------------------*/ 106 107
