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      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) 2000-2012 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 Addr  VG_(client_base) = 0;       /* client address space limits */
     48 Addr  VG_(client_end)  = 0;
     49 
     50 Addr  VG_(clstk_base)  = 0;
     51 Addr  VG_(clstk_end)   = 0;
     52 UWord VG_(clstk_id)    = 0;
     53 
     54 /* linux only: where is the client auxv ? */
     55 /* This is set up as part of setup_client_stack in initimg-linux.c. */
     56 UWord* VG_(client_auxv) = NULL;
     57 
     58 Addr  VG_(brk_base)    = 0;       /* start of brk */
     59 Addr  VG_(brk_limit)   = 0;       /* current brk */
     60 
     61 /* A fd which refers to the client executable. */
     62 Int VG_(cl_exec_fd) = -1;
     63 
     64 /* A fd which refers to the fake /proc/<pid>/cmdline in /tmp. */
     65 Int VG_(cl_cmdline_fd) = -1;
     66 
     67 // Command line pieces, after they have been extracted from argv in
     68 // m_main.main().  The payload vectors are allocated in VG_AR_TOOL
     69 // (the default arena).  They are never freed.
     70 
     71 /* Args for the client. */
     72 XArray* /* of HChar* */ VG_(args_for_client) = NULL;
     73 
     74 /* Args for V (augments, then those from the launcher). */
     75 XArray* /* of HChar* */ VG_(args_for_valgrind) = NULL;
     76 
     77 /* How many of the above not to pass on at execve time? */
     78 Int VG_(args_for_valgrind_noexecpass) = 0;
     79 
     80 /* The name of the client executable, as specified on the command
     81    line. */
     82 const HChar* VG_(args_the_exename) = NULL;
     83 
     84 // Client's original rlimit data and rlimit stack
     85 struct vki_rlimit VG_(client_rlimit_data);
     86 struct vki_rlimit VG_(client_rlimit_stack);
     87 
     88 // Name of the launcher, as extracted from VALGRIND_LAUNCHER at
     89 // startup.
     90 HChar* VG_(name_of_launcher) = NULL;
     91 
     92 /* Application-visible file descriptor limits */
     93 Int VG_(fd_soft_limit) = -1;
     94 Int VG_(fd_hard_limit) = -1;
     95 
     96 /* Useful addresses extracted from the client */
     97 /* Where is the __libc_freeres_wrapper routine we made? */
     98 Addr VG_(client___libc_freeres_wrapper) = 0;
     99 
    100 /* x86-linux only: where is glibc's _dl_sysinfo_int80 function?
    101    Finding it isn't essential, but knowing where it is does sometimes
    102    help produce better back traces.  See big comment in
    103    VG_(get_StackTrace) in m_stacktrace.c for further info. */
    104 Addr VG_(client__dl_sysinfo_int80) = 0;
    105 
    106 
    107 /*--------------------------------------------------------------------*/
    108 /*--- end                                                          ---*/
    109 /*--------------------------------------------------------------------*/
    110