8cf6f0b103
* opencl-lang.c (lval_func_check_synthetic_pointer): New function. * value.h (struct lval_funcs) <indirect, check_synthetic_pointer>: New fields. (value_bits_synthetic_pointer): Declare. * value.c (value_bits_synthetic_pointer): New function. * valprint.c (valprint_check_validity): Handle synthetic pointers. * valops.c (value_ind): Use new 'indirect' lval_funcs method. * valarith.c (value_ptradd): Use set_value_component_location. * p-valprint.c (pascal_object_print_value_fields): Handle synthetic pointers. * jv-valprint.c (java_print_value_fields): Handle synthetic pointers. * dwarf2read.c (dwarf_stack_op_name): Add DW_OP_GNU_implicit_pointer. (dwarf2_fetch_die_location_block): Add get_frame_pc, baton arguments. Handle location lists. (fill_in_loclist_baton): New function. (dwarf2_symbol_mark_computed): Use it. * dwarf2loc.h (dwarf2_find_location_expression): Declare. (dwarf2_fetch_die_location_block): Add get_frame_pc, baton arguments. * dwarf2loc.c (dwarf2_find_location_expression): Rename from find_location_expression. No longer static. Update all callers. (dwarf_expr_frame_pc): New function. (per_cu_dwarf_call): Add get_frame_pc, baton arguments. Update all callers. (struct piece_closure) <per_cu>: New field. (allocate_piece_closure): Add per_cu argument. (read_pieced_value): Handle DWARF_VALUE_IMPLICIT_POINTER. (check_pieced_value_bits): Remove validity argument, add check_for argument. Handle DWARF_VALUE_IMPLICIT_POINTER. (check_pieced_value_validity, check_pieced_value_invalid): Update. (check_pieced_synthetic_pointer): New function. (get_frame_address_in_block_wrapper): New function. (indirect_pieced_value): New function. (pieced_value_funcs): Update. (invalid_synthetic_pointer): New function. (dwarf2_evaluate_loc_desc_full): Rename from dwarf2_evaluate_loc_desc. Add byte_offset argument. (dwarf2_evaluate_loc_desc): Rewrite. (dwarf2_loc_desc_needs_frame): Set new field on context. (get_ax_pc): New function. (disassemble_dwarf_expression): Handle DW_OP_GNU_implicit_pointer. * dwarf2expr.h (enum dwarf_value_location) <DWARF_VALUE_IMPLICIT_POINTER>: New constant. (struct dwarf_expr_context) <get_frame_pc>: New field. (struct dwarf_expr_piece) <v.ptr>: New field. * dwarf2expr.c (add_piece): Handle DWARF_VALUE_IMPLICIT_POINTER. (execute_stack_op): Handle DW_OP_GNU_implicit_pointer. * dwarf2-frame.c (no_get_frame_pc): New function. (execute_stack_op): Set new field on context. * cp-valprint.c (cp_print_value_fields): Handle synthetic pointers. gdb/testsuite * gdb.dwarf2/implptr.exp: New file. * gdb.dwarf2/implptr.c: New file. * gdb.dwarf2/implptr.S: New file.
109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
/* 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;
|
|
struct dwarf2_loclist_baton;
|
|
|
|
/* 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);
|
|
|
|
/* Find a particular location expression from a location list. */
|
|
const gdb_byte *dwarf2_find_location_expression
|
|
(struct dwarf2_loclist_baton *baton,
|
|
size_t *locexpr_length,
|
|
CORE_ADDR pc);
|
|
|
|
struct dwarf2_locexpr_baton dwarf2_fetch_die_location_block
|
|
(unsigned int offset, struct dwarf2_per_cu_data *per_cu,
|
|
CORE_ADDR (*get_frame_pc) (void *baton),
|
|
void *baton);
|
|
|
|
/* Evaluate a location description, starting at DATA and with length
|
|
SIZE, to find the current location of variable of TYPE in the context
|
|
of FRAME. */
|
|
|
|
struct value *dwarf2_evaluate_loc_desc (struct type *type,
|
|
struct frame_info *frame,
|
|
const gdb_byte *data,
|
|
unsigned short size,
|
|
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 */
|