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) 2000-2015 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_vki.h" 35 #include "pub_core_xarray.h" 36 #include "pub_core_clientstate.h" 37 38 /*-----------------------------------------------------------------*/ 39 /*--- ---*/ 40 /*--- Basic globals about the address space. ---*/ 41 /*--- ---*/ 42 /*-----------------------------------------------------------------*/ 43 44 /* Client address space, lowest to highest (see top of ume.c) */ 45 // TODO: get rid of as many of these as possible. 46 47 /* ***Initial*** lowest address of the stack segment of the main thread. 48 The main stack will grow if needed but VG_(clstk_start_base) will 49 not be changed according to the growth. */ 50 Addr VG_(clstk_start_base) = 0; 51 /* Initial highest address of the stack segment of the main thread. */ 52 Addr VG_(clstk_end) = 0; 53 UWord VG_(clstk_id) = 0; 54 /* Maximum size of the main thread's client stack. */ 55 SizeT VG_(clstk_max_size) = 0; 56 57 /* Solaris and Linux only, specifies where the client auxv is. 58 59 This is set up as part of setup_client_stack() in 60 initimg-{linux,solaris}.c. */ 61 UWord* VG_(client_auxv) = NULL; 62 63 Addr VG_(brk_base) = 0; /* start of brk */ 64 Addr VG_(brk_limit) = 0; /* current brk */ 65 66 /* A fd which refers to the client executable. */ 67 Int VG_(cl_exec_fd) = -1; 68 69 /* A fd which refers to the fake /proc/<pid>/cmdline in /tmp. */ 70 Int VG_(cl_cmdline_fd) = -1; 71 72 /* A fd which refers to the fake /proc/<pid>/auxv in /tmp. */ 73 Int VG_(cl_auxv_fd) = -1; 74 75 #if defined(VGO_solaris) 76 /* A fd which refers to the fake /proc/<pid>/psinfo in /tmp. */ 77 Int VG_(cl_psinfo_fd) = -1; 78 #endif /* VGO_solaris */ 79 80 // Command line pieces, after they have been extracted from argv in 81 // m_main.main(). The payload vectors are allocated in VG_AR_CORE 82 // (the default arena). They are never freed. 83 84 /* Args for the client. */ 85 XArray* /* of HChar* */ VG_(args_for_client) = NULL; 86 87 /* Args for V (augments, then those from the launcher). */ 88 XArray* /* of HChar* */ VG_(args_for_valgrind) = NULL; 89 90 /* How many of the above not to pass on at execve time? */ 91 Int VG_(args_for_valgrind_noexecpass) = 0; 92 93 /* The name of the client executable, as specified on the command 94 line. */ 95 const HChar* VG_(args_the_exename) = NULL; 96 97 // Client's original rlimit data and rlimit stack 98 struct vki_rlimit VG_(client_rlimit_data); 99 struct vki_rlimit VG_(client_rlimit_stack); 100 101 // Name of the launcher, as extracted from VALGRIND_LAUNCHER at 102 // startup. 103 HChar* VG_(name_of_launcher) = NULL; 104 105 /* Application-visible file descriptor limits */ 106 Int VG_(fd_soft_limit) = -1; 107 Int VG_(fd_hard_limit) = -1; 108 109 /* Useful addresses extracted from the client */ 110 /* Where is the __libc_freeres_wrapper routine we made? */ 111 Addr VG_(client___libc_freeres_wrapper) = 0; 112 113 /* x86-linux only: where is glibc's _dl_sysinfo_int80 function? 114 Finding it isn't essential, but knowing where it is does sometimes 115 help produce better back traces. See big comment in 116 VG_(get_StackTrace) in m_stacktrace.c for further info. */ 117 Addr VG_(client__dl_sysinfo_int80) = 0; 118 119 /* Address of the (internal) glibc nptl pthread stack cache size, 120 declared as: 121 static size_t stack_cache_actsize; 122 in nptl/allocatestack.c */ 123 SizeT* VG_(client__stack_cache_actsize__addr) = 0; 124 125 #if defined(VGO_solaris) 126 /* Address of variable vg_vfork_fildes in vgpreload_core.so.0 127 (vg_preloaded.c). */ 128 Int* VG_(vfork_fildes_addr) = 0; 129 #endif 130 131 /*--------------------------------------------------------------------*/ 132 /*--- end ---*/ 133 /*--------------------------------------------------------------------*/ 134
