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) 2000-2013 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_base) will 49 not be changed according to the growth. */ 50 Addr VG_(clstk_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 55 /* linux only: where is the client auxv ? */ 56 /* This is set up as part of setup_client_stack in initimg-linux.c. */ 57 UWord* VG_(client_auxv) = NULL; 58 59 Addr VG_(brk_base) = 0; /* start of brk */ 60 Addr VG_(brk_limit) = 0; /* current brk */ 61 62 /* A fd which refers to the client executable. */ 63 Int VG_(cl_exec_fd) = -1; 64 65 /* A fd which refers to the fake /proc/<pid>/cmdline in /tmp. */ 66 Int VG_(cl_cmdline_fd) = -1; 67 68 /* A fd which refers to the fake /proc/<pid>/auxv in /tmp. */ 69 Int VG_(cl_auxv_fd) = -1; 70 71 // Command line pieces, after they have been extracted from argv in 72 // m_main.main(). The payload vectors are allocated in VG_AR_CORE 73 // (the default arena). They are never freed. 74 75 /* Args for the client. */ 76 XArray* /* of HChar* */ VG_(args_for_client) = NULL; 77 78 /* Args for V (augments, then those from the launcher). */ 79 XArray* /* of HChar* */ VG_(args_for_valgrind) = NULL; 80 81 /* How many of the above not to pass on at execve time? */ 82 Int VG_(args_for_valgrind_noexecpass) = 0; 83 84 /* The name of the client executable, as specified on the command 85 line. */ 86 const HChar* VG_(args_the_exename) = NULL; 87 88 // Client's original rlimit data and rlimit stack 89 struct vki_rlimit VG_(client_rlimit_data); 90 struct vki_rlimit VG_(client_rlimit_stack); 91 92 // Name of the launcher, as extracted from VALGRIND_LAUNCHER at 93 // startup. 94 HChar* VG_(name_of_launcher) = NULL; 95 96 /* Application-visible file descriptor limits */ 97 Int VG_(fd_soft_limit) = -1; 98 Int VG_(fd_hard_limit) = -1; 99 100 /* Useful addresses extracted from the client */ 101 /* Where is the __libc_freeres_wrapper routine we made? */ 102 Addr VG_(client___libc_freeres_wrapper) = 0; 103 104 /* x86-linux only: where is glibc's _dl_sysinfo_int80 function? 105 Finding it isn't essential, but knowing where it is does sometimes 106 help produce better back traces. See big comment in 107 VG_(get_StackTrace) in m_stacktrace.c for further info. */ 108 Addr VG_(client__dl_sysinfo_int80) = 0; 109 110 111 /*--------------------------------------------------------------------*/ 112 /*--- end ---*/ 113 /*--------------------------------------------------------------------*/ 114
