| |
| /*--------------------------------------------------------------------*/ |
| /*--- DebugInfo. pub_tool_debuginfo.h ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2000-2008 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_TOOL_DEBUGINFO_H |
| #define __PUB_TOOL_DEBUGINFO_H |
| |
| /*====================================================================*/ |
| /*=== Obtaining debug information ===*/ |
| /*====================================================================*/ |
| |
| /* Get the file/function/line number of the instruction at address |
| 'a'. For these four, if debug info for the address is found, it |
| copies the info into the buffer/UInt and returns True. If not, it |
| returns False and nothing is copied. VG_(get_fnname) always |
| demangles C++ function names. VG_(get_fnname_w_offset) is the |
| same, except it appends "+N" to symbol names to indicate offsets. */ |
| extern Bool VG_(get_filename) ( Addr a, Char* filename, Int n_filename ); |
| extern Bool VG_(get_fnname) ( Addr a, Char* fnname, Int n_fnname ); |
| extern Bool VG_(get_linenum) ( Addr a, UInt* linenum ); |
| extern Bool VG_(get_fnname_w_offset) |
| ( Addr a, Char* fnname, Int n_fnname ); |
| |
| /* This one is the most general. It gives filename, line number and |
| optionally directory name. filename and linenum may not be NULL. |
| dirname may be NULL, meaning that the caller does not want |
| directory name info, in which case dirname_available must also be |
| NULL. If dirname is non-null, directory info is written to it, if |
| it is available; if not available, '\0' is written to the first |
| byte. In either case *dirname_available is set to indicate whether |
| or not directory information was available. |
| |
| Returned value indicates whether any filename/line info could be |
| found. */ |
| extern Bool VG_(get_filename_linenum) |
| ( Addr a, |
| /*OUT*/Char* filename, Int n_filename, |
| /*OUT*/Char* dirname, Int n_dirname, |
| /*OUT*/Bool* dirname_available, |
| /*OUT*/UInt* linenum ); |
| |
| /* Succeeds only if we find from debug info that 'a' is the address of the |
| first instruction in a function -- as opposed to VG_(get_fnname) which |
| succeeds if we find from debug info that 'a' is the address of any |
| instruction in a function. Use this to instrument the start of |
| a particular function. Nb: if an executable/shared object is stripped |
| of its symbols, this function will not be able to recognise function |
| entry points within it. */ |
| extern Bool VG_(get_fnname_if_entry) ( Addr a, Char* fnname, Int n_fnname ); |
| |
| /* Looks up data_addr in the collection of data symbols, and if found |
| puts its name (or as much as will fit) into dname[0 .. n_dname-1], |
| which is guaranteed to be zero terminated. Also data_addr's offset |
| from the symbol start is put into *offset. */ |
| extern Bool VG_(get_datasym_and_offset)( Addr data_addr, |
| /*OUT*/Char* dname, Int n_dname, |
| /*OUT*/OffT* offset ); |
| |
| /* Try to form some description of data_addr by looking at the DWARF3 |
| debug info we have. This considers all global variables, and all |
| frames in the stacks of all threads. Result (or as much as will |
| fit) is put into into dname{1,2}[0 .. n_dname-1] and is guaranteed |
| to be zero terminated. */ |
| extern Bool VG_(get_data_description)( /*OUT*/Char* dname1, |
| /*OUT*/Char* dname2, |
| Int n_dname, |
| Addr data_addr ); |
| |
| /* Succeeds if the address is within a shared object or the main executable. |
| It doesn't matter if debug info is present or not. */ |
| extern Bool VG_(get_objname) ( Addr a, Char* objname, Int n_objname ); |
| |
| /* Puts into 'buf' info about the code address %eip: the address, function |
| name (if known) and filename/line number (if known), like this: |
| |
| 0x4001BF05: realloc (vg_replace_malloc.c:339) |
| |
| 'n_buf' gives length of 'buf'. Returns 'buf'. |
| */ |
| extern Char* VG_(describe_IP)(Addr eip, Char* buf, Int n_buf); |
| |
| |
| /* Get an XArray of StackBlock which describe the stack (auto) blocks |
| for this ip. The caller is expected to free the XArray at some |
| point. If 'arrays_only' is True, only array-typed blocks are |
| returned; otherwise blocks of all types are returned. */ |
| |
| typedef |
| struct { |
| OffT base; /* offset from sp or fp */ |
| SizeT szB; /* size in bytes */ |
| Bool spRel; /* True => sp-rel, False => fp-rel */ |
| Bool isVec; /* does block have an array type, or not? */ |
| HChar name[16]; /* first 15 chars of name (asciiz) */ |
| } |
| StackBlock; |
| |
| extern void* /* really, XArray* of StackBlock */ |
| VG_(di_get_stack_blocks_at_ip)( Addr ip, Bool arrays_only ); |
| |
| |
| /* Get an array of GlobalBlock which describe the global blocks owned |
| by the shared object characterised by the given di_handle. Asserts |
| if the handle is invalid. The caller is responsible for freeing |
| the array at some point. If 'arrays_only' is True, only |
| array-typed blocks are returned; otherwise blocks of all types are |
| returned. */ |
| |
| typedef |
| struct { |
| Addr addr; |
| SizeT szB; |
| Bool isVec; /* does block have an array type, or not? */ |
| HChar name[16]; /* first 15 chars of name (asciiz) */ |
| HChar soname[16]; /* first 15 chars of name (asciiz) */ |
| } |
| GlobalBlock; |
| |
| extern void* /* really, XArray* of GlobalBlock */ |
| VG_(di_get_global_blocks_from_dihandle) ( ULong di_handle, |
| Bool arrays_only ); |
| |
| |
| /*====================================================================*/ |
| /*=== Obtaining segment information ===*/ |
| /*====================================================================*/ |
| |
| /* A way to get information about what segments are mapped */ |
| typedef struct _DebugInfo DebugInfo; |
| |
| /* Returns NULL if the DebugInfo isn't found. It doesn't matter if |
| debug info is present or not. */ |
| extern DebugInfo* VG_(find_seginfo) ( Addr a ); |
| |
| /* Fish bits out of DebugInfos. */ |
| extern Addr VG_(seginfo_get_text_avma)( const DebugInfo *di ); |
| extern SizeT VG_(seginfo_get_text_size)( const DebugInfo *di ); |
| extern Addr VG_(seginfo_get_plt_avma) ( const DebugInfo *di ); |
| extern SizeT VG_(seginfo_get_plt_size) ( const DebugInfo *di ); |
| extern Addr VG_(seginfo_get_gotplt_avma)( const DebugInfo *di ); |
| extern SizeT VG_(seginfo_get_gotplt_size)( const DebugInfo *di ); |
| extern const UChar* VG_(seginfo_soname) ( const DebugInfo *di ); |
| extern const UChar* VG_(seginfo_filename) ( const DebugInfo *di ); |
| extern ULong VG_(seginfo_get_text_bias)( const DebugInfo *di ); |
| |
| /* Function for traversing the seginfo list. When called with NULL it |
| returns the first element; otherwise it returns the given element's |
| successor. */ |
| extern const DebugInfo* VG_(next_seginfo) ( const DebugInfo *di ); |
| |
| /* Functions for traversing all the symbols in a DebugInfo. _howmany |
| tells how many there are. _getidx retrieves the n'th, for n in 0 |
| .. _howmany-1. You may not modify the function name thereby |
| acquired; if you want to do so, first strdup it. */ |
| extern Int VG_(seginfo_syms_howmany) ( const DebugInfo *di ); |
| extern void VG_(seginfo_syms_getidx) ( const DebugInfo *di, |
| Int idx, |
| /*OUT*/Addr* avma, |
| /*OUT*/Addr* tocptr, |
| /*OUT*/UInt* size, |
| /*OUT*/HChar** name, |
| /*OUT*/Bool* isText ); |
| |
| /* A simple enumeration to describe the 'kind' of various kinds of |
| segments that arise from the mapping of object files. */ |
| typedef |
| enum { |
| Vg_SectUnknown, |
| Vg_SectText, |
| Vg_SectData, |
| Vg_SectBSS, |
| Vg_SectGOT, |
| Vg_SectPLT, |
| Vg_SectGOTPLT, |
| Vg_SectOPD |
| } |
| VgSectKind; |
| |
| /* Convert a VgSectKind to a string, which must be copied if you want |
| to change it. */ |
| extern |
| const HChar* VG_(pp_SectKind)( VgSectKind kind ); |
| |
| /* Given an address 'a', make a guess of which section of which object |
| it comes from. If name is non-NULL, then the last n_name-1 |
| characters of the object's name is put in name[0 .. n_name-2], and |
| name[n_name-1] is set to zero (guaranteed zero terminated). */ |
| extern |
| VgSectKind VG_(seginfo_sect_kind)( /*OUT*/UChar* name, SizeT n_name, |
| Addr a); |
| |
| |
| #endif // __PUB_TOOL_DEBUGINFO_H |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |