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.
110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/* DWARF 2 location expression support for GDB.
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Copyright (C) 2003, 2005, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#if !defined (DWARF2LOC_H)
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#define DWARF2LOC_H
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struct symbol_computed_ops;
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struct objfile;
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struct dwarf2_per_cu_data;
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struct dwarf2_loclist_baton;
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/* This header is private to the DWARF-2 reader. It is shared between
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dwarf2read.c and dwarf2loc.c. */
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/* Return the OBJFILE associated with the compilation unit CU. If CU
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came from a separate debuginfo file, then the master objfile is
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returned. */
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struct objfile *dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *cu);
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/* Return the address size given in the compilation unit header for CU. */
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CORE_ADDR dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *cu);
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/* Return the offset size given in the compilation unit header for CU. */
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int dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *cu);
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/* Return the text offset of the CU. The returned offset comes from
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this CU's objfile. If this objfile came from a separate debuginfo
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file, then the offset may be different from the corresponding
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offset in the parent objfile. */
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CORE_ADDR dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *cu);
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/* Find a particular location expression from a location list. */
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const gdb_byte *dwarf2_find_location_expression
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(struct dwarf2_loclist_baton *baton,
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size_t *locexpr_length,
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CORE_ADDR pc);
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struct dwarf2_locexpr_baton dwarf2_fetch_die_location_block
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(unsigned int offset, struct dwarf2_per_cu_data *per_cu,
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CORE_ADDR (*get_frame_pc) (void *baton),
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void *baton);
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/* Evaluate a location description, starting at DATA and with length
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SIZE, to find the current location of variable of TYPE in the context
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of FRAME. */
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struct value *dwarf2_evaluate_loc_desc (struct type *type,
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struct frame_info *frame,
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const gdb_byte *data,
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unsigned short size,
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struct dwarf2_per_cu_data *per_cu);
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/* The symbol location baton types used by the DWARF-2 reader (i.e.
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SYMBOL_LOCATION_BATON for a LOC_COMPUTED symbol). "struct
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dwarf2_locexpr_baton" is for a symbol with a single location
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expression; "struct dwarf2_loclist_baton" is for a symbol with a
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location list. */
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struct dwarf2_locexpr_baton
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{
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/* Pointer to the start of the location expression. */
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const gdb_byte *data;
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/* Length of the location expression. */
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unsigned long size;
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/* The compilation unit containing the symbol whose location
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we're computing. */
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struct dwarf2_per_cu_data *per_cu;
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};
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struct dwarf2_loclist_baton
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{
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/* The initial base address for the location list, based on the compilation
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unit. */
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CORE_ADDR base_address;
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/* Pointer to the start of the location list. */
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const gdb_byte *data;
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/* Length of the location list. */
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unsigned long size;
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/* The compilation unit containing the symbol whose location
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we're computing. */
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struct dwarf2_per_cu_data *per_cu;
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};
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extern const struct symbol_computed_ops dwarf2_locexpr_funcs;
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extern const struct symbol_computed_ops dwarf2_loclist_funcs;
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#endif /* dwarf2loc.h */
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