| |
| /*--------------------------------------------------------------------*/ |
| /*--- The address space manager. pub_core_aspacemgr.h ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2000-2005 Julian Seward |
| jseward@acm.org |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #ifndef __PUB_CORE_ASPACEMGR_H |
| #define __PUB_CORE_ASPACEMGR_H |
| |
| //-------------------------------------------------------------------- |
| // PURPOSE: This module deals with management of the entire process |
| // address space. Almost everything depends upon it, including dynamic |
| // memory management. Hence this module is almost completely |
| // standalone; the only module it uses is m_debuglog. DO NOT CHANGE |
| // THIS. |
| // [XXX: actually, this is far from true...] |
| //-------------------------------------------------------------------- |
| |
| #include "pub_tool_aspacemgr.h" |
| #include "pub_core_debuginfo.h" |
| |
| // Address space globals |
| extern Addr VG_(client_base); // client address space limits |
| extern Addr VG_(client_end); |
| extern Addr VG_(client_mapbase); // base of mappings |
| extern Addr VG_(clstk_base); // client stack range |
| extern Addr VG_(clstk_end); |
| extern UWord VG_(clstk_id); // client stack id |
| extern Addr VG_(client_trampoline_code); |
| |
| extern Addr VG_(brk_base); // start of brk |
| extern Addr VG_(brk_limit); // current brk |
| extern Addr VG_(shadow_base); // tool's shadow memory |
| extern Addr VG_(shadow_end); |
| extern Addr VG_(valgrind_base); // valgrind's address range |
| extern Addr VG_(valgrind_last); // Nb: last byte, rather than one past the end |
| |
| /* A Segment is mapped piece of client memory. This covers all kinds |
| of mapped memory (exe, brk, mmap, .so, shm, stack, etc) |
| |
| We try to encode everything we know about a particular segment here. |
| */ |
| #define SF_FIXED (1 << 0) // client asked for MAP_FIXED |
| #define SF_SHARED (1 << 1) // shared |
| #define SF_SHM (1 << 2) // SYSV SHM (also SF_SHARED) |
| #define SF_MMAP (1 << 3) // mmap memory |
| #define SF_FILE (1 << 4) // mapping is backed by a file |
| #define SF_STACK (1 << 5) // is a stack |
| #define SF_GROWDOWN (1 << 6) // segment grows down |
| #define SF_GROWUP (1 << 7) // segment grows up |
| #define SF_EXEC (1 << 8) // segment created by exec |
| #define SF_DYNLIB (1 << 9) // mapped from dynamic library |
| #define SF_NOSYMS (1 << 10) // don't load syms, even if present |
| #define SF_BRK (1 << 11) // brk segment |
| #define SF_CORE (1 << 12) // allocated by core on behalf of the client |
| #define SF_VALGRIND (1 << 13) // a valgrind-internal mapping - not in client |
| #define SF_CODE (1 << 14) // segment contains cached code |
| #define SF_DEVICE (1 << 15) // device mapping; avoid careless touching |
| |
| struct _Segment { |
| UInt prot; // VKI_PROT_* |
| UInt flags; // SF_* |
| |
| Addr addr; // mapped addr (page aligned) |
| SizeT len; // size of mapping (page aligned) |
| |
| // These are valid if (flags & SF_FILE) |
| OffT offset; // file offset |
| const Char* filename; // filename (NULL if unknown) |
| Int fnIdx; // filename table index (-1 if unknown) |
| UInt dev; // device |
| UInt ino; // inode |
| |
| SegInfo* seginfo; // symbol table, etc |
| }; |
| |
| /* segment mapped from a file descriptor */ |
| extern void VG_(map_fd_segment) (Addr addr, SizeT len, UInt prot, UInt flags, |
| Int fd, ULong off, const Char *filename); |
| |
| /* segment mapped from a file */ |
| extern void VG_(map_file_segment)(Addr addr, SizeT len, UInt prot, UInt flags, |
| UInt dev, UInt ino, ULong off, const Char *filename); |
| |
| /* simple segment */ |
| extern void VG_(map_segment) (Addr addr, SizeT len, UInt prot, UInt flags); |
| |
| extern void VG_(unmap_range) (Addr addr, SizeT len); |
| extern void VG_(mprotect_range)(Addr addr, SizeT len, UInt prot); |
| extern Addr VG_(find_map_space)(Addr base, SizeT len, Bool for_client); |
| |
| /* Find the segment containing a, or NULL if none. */ |
| extern Segment *VG_(find_segment)(Addr a); |
| |
| /* a is an unmapped address (is checked). Find the next segment |
| along in the address space, or NULL if none. */ |
| extern Segment *VG_(find_segment_above_unmapped)(Addr a); |
| |
| /* a is a mapped address (in a segment, is checked). Find the |
| next segment along. */ |
| extern Segment *VG_(find_segment_above_mapped)(Addr a); |
| |
| extern Bool VG_(seg_contains)(const Segment *s, Addr ptr, SizeT size); |
| extern Bool VG_(seg_overlaps)(const Segment *s, Addr ptr, SizeT size); |
| |
| extern Segment *VG_(split_segment)(Addr a); |
| |
| extern void VG_(pad_address_space) (Addr start); |
| extern void VG_(unpad_address_space)(Addr start); |
| |
| extern UWord VG_(handle_stack_register)(Addr start, Addr end); |
| extern void VG_(handle_stack_deregister)(UWord id); |
| extern void VG_(handle_stack_change)(UWord id, Addr start, Addr end); |
| |
| extern VGA_REGPARM(2) |
| void VG_(unknown_SP_update) ( Addr old_SP, Addr new_SP ); |
| |
| ///* Search /proc/self/maps for changes which aren't reflected in the |
| // segment list */ |
| //extern void VG_(sync_segments)(UInt flags); |
| |
| /* Return string for prot */ |
| extern const HChar *VG_(prot_str)(UInt prot); |
| |
| extern Addr VG_(get_memory_from_mmap_for_client) |
| (Addr base, SizeT len, UInt prot, UInt flags); |
| |
| //extern void VG_(print_shadow_stats)(); |
| |
| /* Parses /proc/self/maps, calling `record_mapping' for each entry. */ |
| extern |
| void VG_(parse_procselfmaps) ( |
| void (*record_mapping)( Addr addr, SizeT len, UInt prot, |
| UInt dev, UInt ino, ULong foff, |
| const UChar *filename ) ); |
| |
| // Pointercheck |
| extern Bool VGA_(setup_pointercheck) ( Addr client_base, Addr client_end ); |
| |
| #endif // __PUB_CORE_ASPACEMGR_H |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end pub_core_aspacemgr.h ---*/ |
| /*--------------------------------------------------------------------*/ |