sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- Misc client state info pub_core_clientstate.h ---*/ |
| 4 | /*--------------------------------------------------------------------*/ |
| 5 | |
| 6 | /* |
| 7 | This file is part of Valgrind, a dynamic binary instrumentation |
| 8 | framework. |
| 9 | |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 10 | Copyright (C) 2000-2017 Julian Seward |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 11 | jseward@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_CLIENTSTATE_H |
| 32 | #define __PUB_CORE_CLIENTSTATE_H |
| 33 | |
| 34 | //-------------------------------------------------------------------- |
| 35 | // PURPOSE: This module holds various bits of client state which don't |
| 36 | // live comfortably anywhere else. Note that the ThreadStates for the |
sewardj | fdf91b4 | 2005-09-28 00:53:09 +0000 | [diff] [blame] | 37 | // client don't live here; they instead live in m_threadstate.h. Most |
| 38 | // of these values are set once at startup and not changed later. |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 39 | //-------------------------------------------------------------------- |
| 40 | |
| 41 | #include "pub_tool_clientstate.h" |
| 42 | |
| 43 | // Address space globals |
| 44 | |
philippe | 38a74d2 | 2014-08-29 22:53:19 +0000 | [diff] [blame] | 45 | // client stack range |
| 46 | extern Addr VG_(clstk_start_base); // *Initial* lowest byte address |
| 47 | extern Addr VG_(clstk_end); // Highest byte address |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 48 | extern UWord VG_(clstk_id); // client stack id |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 49 | extern SizeT VG_(clstk_max_size); // max size of the main threads's client stack |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 50 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 51 | /* Linux and Solaris only: where is the client auxv? */ |
| 52 | /* This is setup as part of setup_client_stack in initimg-linux.c |
| 53 | or initimg-solaris.c, respectively. */ |
sewardj | 2a31239 | 2011-06-26 09:26:48 +0000 | [diff] [blame] | 54 | extern UWord* VG_(client_auxv); |
| 55 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 56 | extern Addr VG_(brk_base); // start of brk |
| 57 | extern Addr VG_(brk_limit); // current brk |
| 58 | |
| 59 | /* A fd which refers to the client executable. */ |
| 60 | extern Int VG_(cl_exec_fd); |
| 61 | |
| 62 | /* A fd which refers to the fake /proc/<pid>/cmdline in /tmp. The |
| 63 | idea is: make up the /proc/<pid>/cmdline file the client would |
| 64 | expect to see if it was running natively. Copy into a file in |
| 65 | /tmp. When the client then does an open of /proc/<pid>/cmdline or |
| 66 | /proc/self/cmdline, instead give it a file handle to the file in |
| 67 | /tmp. The problem of deleting said file when Valgrind exits is |
| 68 | neatly sidestepped by unlinking it as soon as it has been created, |
| 69 | but holding on to the file handle. That causes the kernel to keep |
| 70 | the file contents alive exactly until the process exits. */ |
| 71 | extern Int VG_(cl_cmdline_fd); |
| 72 | |
tom | 41ad7e7 | 2012-10-04 20:27:38 +0000 | [diff] [blame] | 73 | /* Same as above, but for /proc/<pid>/auxv. */ |
| 74 | extern Int VG_(cl_auxv_fd); |
| 75 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 76 | #if defined(VGO_solaris) |
| 77 | /* Same as above, but for /proc/<pid>/psinfo. */ |
| 78 | extern Int VG_(cl_psinfo_fd); |
| 79 | #endif /* VGO_solaris */ |
| 80 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 81 | // Client's original rlimit data and rlimit stack |
| 82 | extern struct vki_rlimit VG_(client_rlimit_data); |
| 83 | extern struct vki_rlimit VG_(client_rlimit_stack); |
| 84 | |
| 85 | // Name of the launcher, as extracted from VALGRIND_LAUNCHER at |
| 86 | // startup. |
| 87 | extern HChar* VG_(name_of_launcher); |
| 88 | |
sewardj | fdf91b4 | 2005-09-28 00:53:09 +0000 | [diff] [blame] | 89 | /* Application-visible file descriptor limits */ |
| 90 | extern Int VG_(fd_soft_limit); |
| 91 | extern Int VG_(fd_hard_limit); |
| 92 | |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 93 | /* Useful addresses extracted from the client. */ |
| 94 | /* Where is the freeres_wrapper routine we made? */ |
| 95 | extern Addr VG_(client_freeres_wrapper); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 96 | |
sewardj | a672ea3 | 2006-04-29 18:03:14 +0000 | [diff] [blame] | 97 | /* x86-linux only: where is ld.so's _dl_sysinfo_int80 function? |
| 98 | Finding it isn't essential, but knowing where it is does sometimes |
| 99 | help produce better back traces. See big comment in |
| 100 | VG_(get_StackTrace) in m_stacktrace.c for further info. */ |
| 101 | extern Addr VG_(client__dl_sysinfo_int80); |
| 102 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 103 | /* Obtains the initial client stack pointer from the finalised image info. */ |
| 104 | extern Addr VG_(get_initial_client_SP)(void); |
sewardj | a672ea3 | 2006-04-29 18:03:14 +0000 | [diff] [blame] | 105 | |
philippe | 9848690 | 2014-08-19 22:46:44 +0000 | [diff] [blame] | 106 | /* glibc nptl pthread systems only, when no-nptl-pthread-stackcache |
| 107 | was given in --sim-hints. |
| 108 | Used for a (kludgy) way to disable the cache of stacks as implemented in |
| 109 | nptl glibc. |
| 110 | Based on internal knowledge of the pthread glibc nptl/allocatestack.c code: |
| 111 | a huge value in stack_cache_actsize (bigger than the constant |
| 112 | stack_cache_maxsize) makes glibc believes the cache is full |
| 113 | and so stacks are always released when a pthread terminates. |
| 114 | Several ugliness in this kludge: |
| 115 | * hardcodes private glibc var name "stack_cache_maxsize" |
| 116 | * based on knowledge of the code of the functions |
| 117 | queue_stack and __free_stacks |
| 118 | * static symbol for "stack_cache_maxsize" must be in |
| 119 | the debug info. |
| 120 | It would be much cleaner to have a documented and supported |
| 121 | way to disable the pthread stack cache. */ |
| 122 | extern SizeT* VG_(client__stack_cache_actsize__addr); |
| 123 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 124 | #if defined(VGO_solaris) |
| 125 | /* Address of variable vg_vfork_fildes in vgpreload_core.so.0 |
| 126 | (vg_preloaded.c). */ |
| 127 | extern Int* VG_(vfork_fildes_addr); |
| 128 | #endif |
| 129 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 130 | #endif // __PUB_CORE_CLIENTSTATE_H |
| 131 | |
| 132 | /*--------------------------------------------------------------------*/ |
| 133 | /*--- end ---*/ |
| 134 | /*--------------------------------------------------------------------*/ |