1 2 /*--------------------------------------------------------------------*/ 3 /*--- A home for miscellaneous bits of information which pertain ---*/ 4 /*--- to the client's state. ---*/ 5 /*--- m_clientstate.c ---*/ 6 /*--------------------------------------------------------------------*/ 7 8 /* 9 This file is part of Valgrind, a dynamic binary instrumentation 10 framework. 11 12 Copyright (C) 2000-2017 Julian Seward 13 jseward (at) acm.org 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 #include "pub_core_basics.h" 34 #include "pub_core_threadstate.h" 35 #include "pub_core_vki.h" 36 #include "pub_core_xarray.h" 37 #include "pub_core_clientstate.h" 38 39 /*-----------------------------------------------------------------*/ 40 /*--- ---*/ 41 /*--- Basic globals about the address space. ---*/ 42 /*--- ---*/ 43 /*-----------------------------------------------------------------*/ 44 45 /* Client address space, lowest to highest (see top of ume.c) */ 46 // TODO: get rid of as many of these as possible. 47 48 /* ***Initial*** lowest address of the stack segment of the main thread. 49 The main stack will grow if needed but VG_(clstk_start_base) will 50 not be changed according to the growth. */ 51 Addr VG_(clstk_start_base) = 0; 52 /* Initial highest address of the stack segment of the main thread. */ 53 Addr VG_(clstk_end) = 0; 54 UWord VG_(clstk_id) = NULL_STK_ID; 55 /* Maximum size of the main thread's client stack. */ 56 SizeT VG_(clstk_max_size) = 0; 57 58 /* Solaris and Linux only, specifies where the client auxv is. 59 60 This is set up as part of setup_client_stack() in 61 initimg-{linux,solaris}.c. */ 62 UWord* VG_(client_auxv) = NULL; 63 64 Addr VG_(brk_base) = 0; /* start of brk */ 65 Addr VG_(brk_limit) = 0; /* current brk */ 66 67 /* A fd which refers to the client executable. */ 68 Int VG_(cl_exec_fd) = -1; 69 70 /* A fd which refers to the fake /proc/<pid>/cmdline in /tmp. */ 71 Int VG_(cl_cmdline_fd) = -1; 72 73 /* A fd which refers to the fake /proc/<pid>/auxv in /tmp. */ 74 Int VG_(cl_auxv_fd) = -1; 75 76 #if defined(VGO_solaris) 77 /* A fd which refers to the fake /proc/<pid>/psinfo in /tmp. */ 78 Int VG_(cl_psinfo_fd) = -1; 79 #endif /* VGO_solaris */ 80 81 // Command line pieces, after they have been extracted from argv in 82 // m_main.main(). The payload vectors are allocated in VG_AR_CORE 83 // (the default arena). They are never freed. 84 85 /* Args for the client. */ 86 XArray* /* of HChar* */ VG_(args_for_client) = NULL; 87 88 /* Args for V (augments, then those from the launcher). */ 89 XArray* /* of HChar* */ VG_(args_for_valgrind) = NULL; 90 91 /* How many of the above not to pass on at execve time? */ 92 Int VG_(args_for_valgrind_noexecpass) = 0; 93 94 /* The name of the client executable, as specified on the command 95 line. */ 96 const HChar* VG_(args_the_exename) = NULL; 97 98 // Client's original rlimit data and rlimit stack 99 struct vki_rlimit VG_(client_rlimit_data); 100 struct vki_rlimit VG_(client_rlimit_stack); 101 102 // Name of the launcher, as extracted from VALGRIND_LAUNCHER at 103 // startup. 104 HChar* VG_(name_of_launcher) = NULL; 105 106 /* Application-visible file descriptor limits */ 107 Int VG_(fd_soft_limit) = -1; 108 Int VG_(fd_hard_limit) = -1; 109 110 /* Useful addresses extracted from the client. */ 111 /* Where is the freeres_wrapper routine we made? */ 112 Addr VG_(client_freeres_wrapper) = 0; 113 114 /* x86-linux only: where is glibc's _dl_sysinfo_int80 function? 115 Finding it isn't essential, but knowing where it is does sometimes 116 help produce better back traces. See big comment in 117 VG_(get_StackTrace) in m_stacktrace.c for further info. */ 118 Addr VG_(client__dl_sysinfo_int80) = 0; 119 120 /* Address of the (internal) glibc nptl pthread stack cache size, 121 declared as: 122 static size_t stack_cache_actsize; 123 in nptl/allocatestack.c */ 124 SizeT* VG_(client__stack_cache_actsize__addr) = 0; 125 126 #if defined(VGO_solaris) 127 /* Address of variable vg_vfork_fildes in vgpreload_core.so.0 128 (vg_preloaded.c). */ 129 Int* VG_(vfork_fildes_addr) = 0; 130 #endif 131 132 /*--------------------------------------------------------------------*/ 133 /*--- end ---*/ 134 /*--------------------------------------------------------------------*/ 135
