Subversion Repositories openrisc_2011-10-31

/* DWARF 2 location expression support for GDB.

   Copyright (C) 2003, 2005, 2007, 2008, 2009, 2010

   Free Software Foundation, Inc.

   This file is part of GDB.

   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 3 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, see <http://www.gnu.org/licenses/>.  */

#if !defined (DWARF2LOC_H)

#define DWARF2LOC_H

struct symbol_computed_ops;

struct objfile;

struct dwarf2_per_cu_data;

/* This header is private to the DWARF-2 reader.  It is shared between

   dwarf2read.c and dwarf2loc.c.  */

/* Return the OBJFILE associated with the compilation unit CU.  If CU

   came from a separate debuginfo file, then the master objfile is

   returned.  */

struct objfile *dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *cu);

/* Return the address size given in the compilation unit header for CU.  */

CORE_ADDR dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *cu);

/* Return the offset size given in the compilation unit header for CU.  */

int dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *cu);

/* Return the text offset of the CU.  The returned offset comes from

   this CU's objfile.  If this objfile came from a separate debuginfo

   file, then the offset may be different from the corresponding

   offset in the parent objfile.  */

CORE_ADDR dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *cu);

struct dwarf2_locexpr_baton dwarf2_fetch_die_location_block

  (unsigned int offset, struct dwarf2_per_cu_data *per_cu);

/* The symbol location baton types used by the DWARF-2 reader (i.e.

   SYMBOL_LOCATION_BATON for a LOC_COMPUTED symbol).  "struct

   dwarf2_locexpr_baton" is for a symbol with a single location

   expression; "struct dwarf2_loclist_baton" is for a symbol with a

   location list.  */

struct dwarf2_locexpr_baton

{

  /* Pointer to the start of the location expression.  */

  const gdb_byte *data;

  /* Length of the location expression.  */

  unsigned long size;

  /* The compilation unit containing the symbol whose location

     we're computing.  */

  struct dwarf2_per_cu_data *per_cu;

};

struct dwarf2_loclist_baton

{

  /* The initial base address for the location list, based on the compilation

     unit.  */

  CORE_ADDR base_address;

  /* Pointer to the start of the location list.  */

  const gdb_byte *data;

  /* Length of the location list.  */

  unsigned long size;

  /* The compilation unit containing the symbol whose location

     we're computing.  */

  struct dwarf2_per_cu_data *per_cu;

};

extern const struct symbol_computed_ops dwarf2_locexpr_funcs;

extern const struct symbol_computed_ops dwarf2_loclist_funcs;

#endif /* dwarf2loc.h */