2005-07-12 15:06:54 +02:00
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/* DWARF 2 location expression support for GDB.
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2015-01-01 10:32:14 +01:00
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Copyright (C) 2003-2015 Free Software Foundation, Inc.
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Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 16:24:18 +01:00
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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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2007-08-23 20:08:50 +02:00
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the Free Software Foundation; either version 3 of the License, or
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Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 16:24:18 +01:00
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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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2007-08-23 20:08:50 +02:00
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 16:24:18 +01:00
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#if !defined (DWARF2LOC_H)
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#define DWARF2LOC_H
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gdb/
Code cleanupp: Use cu_offset and sect_offset compile time type checking.
* dwarf2expr.c (add_piece, dwarf_get_base_type, execute_stack_op)
(ctx_no_dwarf_call, ctx_no_get_base_type): Use cu_offset and
sect_offset.
* dwarf2expr.h (cu_offset, sect_offset): New types.
(struct dwarf_expr_context_funcs) <dwarf_call>
(struct dwarf_expr_context_funcs) <get_base_type>: Use cu_offset and
sect_offset.
(struct dwarf_expr_context) <len>: Improve the comment.
(struct dwarf_expr_piece, ctx_no_dwarf_call, ctx_no_get_base_type): Use
cu_offset and sect_offset.
* dwarf2loc.c (per_cu_dwarf_call, dwarf_expr_dwarf_call)
(dwarf_expr_get_base_type, needs_frame_dwarf_call)
(dwarf2_compile_expr_to_ax, disassemble_dwarf_expression): Likewise.
* dwarf2loc.h: Include dwarf2expr.h.
(dwarf2_fetch_die_location_block, dwarf2_get_die_type): Use cu_offset
and sect_offset.
* dwarf2read.c (struct dwarf2_per_objfile) <debug_types_type_hash>:
Improve the comment.
(struct comp_unit_head, struct dwarf2_cu, struct dwarf2_per_cu_data)
(struct signatured_type, struct line_header, struct partial_die_info)
(struct die_info, find_partial_die, dwarf2_get_ref_die_offset)
(lookup_signatured_type_at_offset, dwarf2_find_containing_comp_unit)
(get_die_type_at_offset, create_cus_from_index)
(create_signatured_type_table_from_index, dw2_get_file_names)
(offset_in_cu_p, read_comp_unit_head, error_check_comp_unit_head)
(read_and_check_comp_unit_head, read_and_check_type_unit_head)
(create_debug_types_hash_table, process_psymtab_comp_unit)
(load_partial_comp_unit, create_all_comp_units)
(partial_die_parent_scope, partial_die_full_name, skip_one_die)
(load_full_comp_unit, dwarf2_physname, read_import_statement)
(inherit_abstract_dies, read_func_scope, read_call_site_scope)
(dwarf2_add_member_fn, process_enumeration_scope, read_module_type)
(read_typedef, die_hash, die_eq, read_full_die, dwarf2_read_abbrevs)
(load_partial_dies, read_partial_die, find_partial_die_in_comp_unit)
(find_partial_die, read_attribute_value, lookup_die_type)
(dump_die_shallow, store_in_ref_table): Use cu_offset and sect_offset.
(is_ref_attr): New function comment.
(dwarf2_get_ref_die_offset): New function comment, new variable retval.
Use cu_offset and sect_offset.
(follow_die_offset, follow_die_ref, dwarf2_fetch_die_location_block)
(dwarf2_get_die_type, follow_die_sig, lookup_signatured_type_at_offset)
(load_full_type_unit, read_signatured_type, per_cu_header_read_in)
(dwarf2_find_containing_comp_unit, struct dwarf2_offset_and_type)
(offset_and_type_hash, offset_and_type_eq, set_die_type)
(get_die_type_at_offset, partial_die_hash, partial_die_eq)
(write_one_signatured_type, write_psymtabs_to_index): Use cu_offset and
sect_offset.
2012-03-19 20:59:19 +01:00
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#include "dwarf2expr.h"
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2009-06-04 14:28:39 +02:00
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struct symbol_computed_ops;
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2008-03-18 20:40:47 +01:00
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struct objfile;
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struct dwarf2_per_cu_data;
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2010-11-29 22:18:16 +01:00
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struct dwarf2_loclist_baton;
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2011-02-17 17:20:44 +01:00
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struct agent_expr;
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struct axs_value;
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2004-01-26 21:36:32 +01:00
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Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 16:24:18 +01:00
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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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gdb/
Implement basic support for DW_TAG_GNU_call_site.
* block.c: Include gdbtypes.h and exceptions.h.
(call_site_for_pc): New function.
* block.h (call_site_for_pc): New declaration.
* defs.h: Include hashtab.h.
(make_cleanup_htab_delete, core_addr_hash, core_addr_eq): New
declarations.
* dwarf2-frame.c (dwarf2_frame_ctx_funcs): Install
ctx_no_push_dwarf_reg_entry_value.
* dwarf2expr.c (read_uleb128, read_sleb128): Support R as NULL.
(dwarf_block_to_dwarf_reg): New function.
(execute_stack_op) <DW_OP_GNU_entry_value>: Implement it.
(ctx_no_push_dwarf_reg_entry_value): New function.
* dwarf2expr.h (struct dwarf_expr_context_funcs): New field
push_dwarf_reg_entry_value.
(ctx_no_push_dwarf_reg_entry_value, dwarf_block_to_dwarf_reg): New
declarations.
* dwarf2loc.c: Include gdbcmd.h.
(dwarf_expr_ctx_funcs): New forward declaration.
(entry_values_debug, show_entry_values_debug, call_site_to_target_addr)
(dwarf_expr_reg_to_entry_parameter)
(dwarf_expr_push_dwarf_reg_entry_value): New.
(dwarf_expr_ctx_funcs): Install dwarf_expr_push_dwarf_reg_entry_value.
(dwarf2_evaluate_loc_desc_full): Handle NO_ENTRY_VALUE_ERROR.
(needs_dwarf_reg_entry_value): New function.
(needs_frame_ctx_funcs): Install it.
(_initialize_dwarf2loc): New function.
* dwarf2loc.h (entry_values_debug): New declaration.
* dwarf2read.c (struct dwarf2_cu): New field call_site_htab.
(read_call_site_scope): New forward declaration.
(process_full_comp_unit): Copy call_site_htab.
(process_die): Support DW_TAG_GNU_call_site.
(read_call_site_scope): New function.
(dwarf2_get_pc_bounds): Support NULL HIGHPC.
(dwarf_tag_name): Support DW_TAG_GNU_call_site.
(cleanup_htab): Delete.
(write_psymtabs_to_index): Use make_cleanup_htab_delete instead of it.
* exceptions.h (enum errors): New NO_ENTRY_VALUE_ERROR.
* gdb-gdb.py (StructMainTypePrettyPrinter): Support
FIELD_LOC_KIND_DWARF_BLOCK.
* gdbtypes.h (enum field_loc_kind): New entry
FIELD_LOC_KIND_DWARF_BLOCK.
(struct main_type): New loc entry dwarf_block.
(struct call_site, FIELD_DWARF_BLOCK, SET_FIELD_DWARF_BLOCK)
(TYPE_FIELD_DWARF_BLOCK): New.
* python/py-type.c: Include dwarf2loc.h.
(check_types_equal): Support FIELD_LOC_KIND_DWARF_BLOCK. New
internal_error call on unknown FIELD_LOC_KIND.
* symtab.h (struct symtab): New field call_site_htab.
* utils.c (do_htab_delete_cleanup, make_cleanup_htab_delete)
(core_addr_hash, core_addr_eq): New functions.
gdb/testsuite/
Implement basic support for DW_TAG_GNU_call_site.
* gdb.arch/Makefile.in (EXECUTABLES): Add amd64-entry-value.
* gdb.arch/amd64-entry-value.cc: New file.
* gdb.arch/amd64-entry-value.exp: New file.
2011-10-09 21:21:39 +02:00
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/* `set debug entry-values' setting. */
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2012-08-02 11:36:40 +02:00
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extern unsigned int entry_values_debug;
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gdb/
Implement basic support for DW_TAG_GNU_call_site.
* block.c: Include gdbtypes.h and exceptions.h.
(call_site_for_pc): New function.
* block.h (call_site_for_pc): New declaration.
* defs.h: Include hashtab.h.
(make_cleanup_htab_delete, core_addr_hash, core_addr_eq): New
declarations.
* dwarf2-frame.c (dwarf2_frame_ctx_funcs): Install
ctx_no_push_dwarf_reg_entry_value.
* dwarf2expr.c (read_uleb128, read_sleb128): Support R as NULL.
(dwarf_block_to_dwarf_reg): New function.
(execute_stack_op) <DW_OP_GNU_entry_value>: Implement it.
(ctx_no_push_dwarf_reg_entry_value): New function.
* dwarf2expr.h (struct dwarf_expr_context_funcs): New field
push_dwarf_reg_entry_value.
(ctx_no_push_dwarf_reg_entry_value, dwarf_block_to_dwarf_reg): New
declarations.
* dwarf2loc.c: Include gdbcmd.h.
(dwarf_expr_ctx_funcs): New forward declaration.
(entry_values_debug, show_entry_values_debug, call_site_to_target_addr)
(dwarf_expr_reg_to_entry_parameter)
(dwarf_expr_push_dwarf_reg_entry_value): New.
(dwarf_expr_ctx_funcs): Install dwarf_expr_push_dwarf_reg_entry_value.
(dwarf2_evaluate_loc_desc_full): Handle NO_ENTRY_VALUE_ERROR.
(needs_dwarf_reg_entry_value): New function.
(needs_frame_ctx_funcs): Install it.
(_initialize_dwarf2loc): New function.
* dwarf2loc.h (entry_values_debug): New declaration.
* dwarf2read.c (struct dwarf2_cu): New field call_site_htab.
(read_call_site_scope): New forward declaration.
(process_full_comp_unit): Copy call_site_htab.
(process_die): Support DW_TAG_GNU_call_site.
(read_call_site_scope): New function.
(dwarf2_get_pc_bounds): Support NULL HIGHPC.
(dwarf_tag_name): Support DW_TAG_GNU_call_site.
(cleanup_htab): Delete.
(write_psymtabs_to_index): Use make_cleanup_htab_delete instead of it.
* exceptions.h (enum errors): New NO_ENTRY_VALUE_ERROR.
* gdb-gdb.py (StructMainTypePrettyPrinter): Support
FIELD_LOC_KIND_DWARF_BLOCK.
* gdbtypes.h (enum field_loc_kind): New entry
FIELD_LOC_KIND_DWARF_BLOCK.
(struct main_type): New loc entry dwarf_block.
(struct call_site, FIELD_DWARF_BLOCK, SET_FIELD_DWARF_BLOCK)
(TYPE_FIELD_DWARF_BLOCK): New.
* python/py-type.c: Include dwarf2loc.h.
(check_types_equal): Support FIELD_LOC_KIND_DWARF_BLOCK. New
internal_error call on unknown FIELD_LOC_KIND.
* symtab.h (struct symtab): New field call_site_htab.
* utils.c (do_htab_delete_cleanup, make_cleanup_htab_delete)
(core_addr_hash, core_addr_eq): New functions.
gdb/testsuite/
Implement basic support for DW_TAG_GNU_call_site.
* gdb.arch/Makefile.in (EXECUTABLES): Add amd64-entry-value.
* gdb.arch/amd64-entry-value.cc: New file.
* gdb.arch/amd64-entry-value.exp: New file.
2011-10-09 21:21:39 +02:00
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2010-07-13 17:09:03 +02:00
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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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2008-03-18 20:40:47 +01:00
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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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2012-01-05 22:53:14 +01:00
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int dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *cu);
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2008-03-18 20:40:47 +01:00
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2011-10-09 20:46:41 +02:00
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/* Return the DW_FORM_ref_addr size given in the compilation unit header for
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CU. */
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int dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *cu);
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2010-06-02 21:37:56 +02:00
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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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2010-07-13 17:09:03 +02:00
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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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2010-11-29 22:18:16 +01:00
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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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2012-12-10 18:17:29 +01:00
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struct dwarf2_locexpr_baton dwarf2_fetch_die_loc_sect_off
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(sect_offset offset_in_cu, 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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struct dwarf2_locexpr_baton dwarf2_fetch_die_loc_cu_off
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gdb/
Code cleanupp: Use cu_offset and sect_offset compile time type checking.
* dwarf2expr.c (add_piece, dwarf_get_base_type, execute_stack_op)
(ctx_no_dwarf_call, ctx_no_get_base_type): Use cu_offset and
sect_offset.
* dwarf2expr.h (cu_offset, sect_offset): New types.
(struct dwarf_expr_context_funcs) <dwarf_call>
(struct dwarf_expr_context_funcs) <get_base_type>: Use cu_offset and
sect_offset.
(struct dwarf_expr_context) <len>: Improve the comment.
(struct dwarf_expr_piece, ctx_no_dwarf_call, ctx_no_get_base_type): Use
cu_offset and sect_offset.
* dwarf2loc.c (per_cu_dwarf_call, dwarf_expr_dwarf_call)
(dwarf_expr_get_base_type, needs_frame_dwarf_call)
(dwarf2_compile_expr_to_ax, disassemble_dwarf_expression): Likewise.
* dwarf2loc.h: Include dwarf2expr.h.
(dwarf2_fetch_die_location_block, dwarf2_get_die_type): Use cu_offset
and sect_offset.
* dwarf2read.c (struct dwarf2_per_objfile) <debug_types_type_hash>:
Improve the comment.
(struct comp_unit_head, struct dwarf2_cu, struct dwarf2_per_cu_data)
(struct signatured_type, struct line_header, struct partial_die_info)
(struct die_info, find_partial_die, dwarf2_get_ref_die_offset)
(lookup_signatured_type_at_offset, dwarf2_find_containing_comp_unit)
(get_die_type_at_offset, create_cus_from_index)
(create_signatured_type_table_from_index, dw2_get_file_names)
(offset_in_cu_p, read_comp_unit_head, error_check_comp_unit_head)
(read_and_check_comp_unit_head, read_and_check_type_unit_head)
(create_debug_types_hash_table, process_psymtab_comp_unit)
(load_partial_comp_unit, create_all_comp_units)
(partial_die_parent_scope, partial_die_full_name, skip_one_die)
(load_full_comp_unit, dwarf2_physname, read_import_statement)
(inherit_abstract_dies, read_func_scope, read_call_site_scope)
(dwarf2_add_member_fn, process_enumeration_scope, read_module_type)
(read_typedef, die_hash, die_eq, read_full_die, dwarf2_read_abbrevs)
(load_partial_dies, read_partial_die, find_partial_die_in_comp_unit)
(find_partial_die, read_attribute_value, lookup_die_type)
(dump_die_shallow, store_in_ref_table): Use cu_offset and sect_offset.
(is_ref_attr): New function comment.
(dwarf2_get_ref_die_offset): New function comment, new variable retval.
Use cu_offset and sect_offset.
(follow_die_offset, follow_die_ref, dwarf2_fetch_die_location_block)
(dwarf2_get_die_type, follow_die_sig, lookup_signatured_type_at_offset)
(load_full_type_unit, read_signatured_type, per_cu_header_read_in)
(dwarf2_find_containing_comp_unit, struct dwarf2_offset_and_type)
(offset_and_type_hash, offset_and_type_eq, set_die_type)
(get_die_type_at_offset, partial_die_hash, partial_die_eq)
(write_one_signatured_type, write_psymtabs_to_index): Use cu_offset and
sect_offset.
2012-03-19 20:59:19 +01:00
|
|
|
(cu_offset offset_in_cu, struct dwarf2_per_cu_data *per_cu,
|
2010-11-29 22:18:16 +01:00
|
|
|
CORE_ADDR (*get_frame_pc) (void *baton),
|
|
|
|
void *baton);
|
2010-06-07 21:55:33 +02:00
|
|
|
|
2013-05-06 21:44:04 +02:00
|
|
|
extern const gdb_byte *dwarf2_fetch_constant_bytes (sect_offset,
|
|
|
|
struct dwarf2_per_cu_data *,
|
|
|
|
struct obstack *,
|
|
|
|
LONGEST *);
|
|
|
|
|
gdb/
Code cleanupp: Use cu_offset and sect_offset compile time type checking.
* dwarf2expr.c (add_piece, dwarf_get_base_type, execute_stack_op)
(ctx_no_dwarf_call, ctx_no_get_base_type): Use cu_offset and
sect_offset.
* dwarf2expr.h (cu_offset, sect_offset): New types.
(struct dwarf_expr_context_funcs) <dwarf_call>
(struct dwarf_expr_context_funcs) <get_base_type>: Use cu_offset and
sect_offset.
(struct dwarf_expr_context) <len>: Improve the comment.
(struct dwarf_expr_piece, ctx_no_dwarf_call, ctx_no_get_base_type): Use
cu_offset and sect_offset.
* dwarf2loc.c (per_cu_dwarf_call, dwarf_expr_dwarf_call)
(dwarf_expr_get_base_type, needs_frame_dwarf_call)
(dwarf2_compile_expr_to_ax, disassemble_dwarf_expression): Likewise.
* dwarf2loc.h: Include dwarf2expr.h.
(dwarf2_fetch_die_location_block, dwarf2_get_die_type): Use cu_offset
and sect_offset.
* dwarf2read.c (struct dwarf2_per_objfile) <debug_types_type_hash>:
Improve the comment.
(struct comp_unit_head, struct dwarf2_cu, struct dwarf2_per_cu_data)
(struct signatured_type, struct line_header, struct partial_die_info)
(struct die_info, find_partial_die, dwarf2_get_ref_die_offset)
(lookup_signatured_type_at_offset, dwarf2_find_containing_comp_unit)
(get_die_type_at_offset, create_cus_from_index)
(create_signatured_type_table_from_index, dw2_get_file_names)
(offset_in_cu_p, read_comp_unit_head, error_check_comp_unit_head)
(read_and_check_comp_unit_head, read_and_check_type_unit_head)
(create_debug_types_hash_table, process_psymtab_comp_unit)
(load_partial_comp_unit, create_all_comp_units)
(partial_die_parent_scope, partial_die_full_name, skip_one_die)
(load_full_comp_unit, dwarf2_physname, read_import_statement)
(inherit_abstract_dies, read_func_scope, read_call_site_scope)
(dwarf2_add_member_fn, process_enumeration_scope, read_module_type)
(read_typedef, die_hash, die_eq, read_full_die, dwarf2_read_abbrevs)
(load_partial_dies, read_partial_die, find_partial_die_in_comp_unit)
(find_partial_die, read_attribute_value, lookup_die_type)
(dump_die_shallow, store_in_ref_table): Use cu_offset and sect_offset.
(is_ref_attr): New function comment.
(dwarf2_get_ref_die_offset): New function comment, new variable retval.
Use cu_offset and sect_offset.
(follow_die_offset, follow_die_ref, dwarf2_fetch_die_location_block)
(dwarf2_get_die_type, follow_die_sig, lookup_signatured_type_at_offset)
(load_full_type_unit, read_signatured_type, per_cu_header_read_in)
(dwarf2_find_containing_comp_unit, struct dwarf2_offset_and_type)
(offset_and_type_hash, offset_and_type_eq, set_die_type)
(get_die_type_at_offset, partial_die_hash, partial_die_eq)
(write_one_signatured_type, write_psymtabs_to_index): Use cu_offset and
sect_offset.
2012-03-19 20:59:19 +01:00
|
|
|
struct type *dwarf2_get_die_type (cu_offset die_offset,
|
2011-05-12 19:40:55 +02:00
|
|
|
struct dwarf2_per_cu_data *per_cu);
|
|
|
|
|
2014-05-14 22:28:58 +02:00
|
|
|
/* Find the frame base information for FRAMEFUNC at PC. START is an
|
|
|
|
out parameter which is set to point to the DWARF expression to
|
|
|
|
compute. LENGTH is an out parameter which is set to the length of
|
|
|
|
the DWARF expression. This throws an exception on error or if an
|
|
|
|
expression is not found; the returned length will never be
|
|
|
|
zero. */
|
|
|
|
|
|
|
|
extern void func_get_frame_base_dwarf_block (struct symbol *framefunc,
|
|
|
|
CORE_ADDR pc,
|
|
|
|
const gdb_byte **start,
|
|
|
|
size_t *length);
|
|
|
|
|
2010-08-12 21:55:38 +02:00
|
|
|
/* 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,
|
2012-07-26 04:03:16 +02:00
|
|
|
size_t size,
|
2010-08-12 21:55:38 +02:00
|
|
|
struct dwarf2_per_cu_data *per_cu);
|
|
|
|
|
2014-09-03 10:07:46 +02:00
|
|
|
/* Converts a dynamic property into a static one. ADDRESS is the address
|
|
|
|
of the object currently being evaluated and might be nedded.
|
2013-10-09 16:28:22 +02:00
|
|
|
Returns 1 if PROP could be converted and the static value is passed back
|
|
|
|
into VALUE, otherwise returns 0. */
|
|
|
|
|
|
|
|
int dwarf2_evaluate_property (const struct dynamic_prop *prop,
|
2014-08-12 01:36:04 +02:00
|
|
|
CORE_ADDR address,
|
2014-04-29 14:27:14 +02:00
|
|
|
CORE_ADDR *value);
|
2013-10-09 16:28:22 +02:00
|
|
|
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
/* A helper for the compiler interface that compiles a single dynamic
|
|
|
|
property to C code.
|
|
|
|
|
|
|
|
STREAM is where the C code is to be written.
|
|
|
|
RESULT_NAME is the name of the generated variable.
|
|
|
|
GDBARCH is the architecture to use.
|
|
|
|
REGISTERS_USED is a bit-vector that is filled to note which
|
|
|
|
registers are required by the generated expression.
|
|
|
|
PROP is the property for which code is generated.
|
|
|
|
ADDRESS is the address at which the property is considered to be
|
|
|
|
evaluated.
|
|
|
|
SYM the originating symbol, used for error reporting. */
|
|
|
|
|
|
|
|
void dwarf2_compile_property_to_c (struct ui_file *stream,
|
|
|
|
const char *result_name,
|
|
|
|
struct gdbarch *gdbarch,
|
|
|
|
unsigned char *registers_used,
|
|
|
|
const struct dynamic_prop *prop,
|
|
|
|
CORE_ADDR address,
|
|
|
|
struct symbol *sym);
|
|
|
|
|
Initial support for Fission. http://gcc.gnu.org/wiki/DebugFission
* symfile.c (default_symfile_relocate): Use sectp->owner instead of
objfile->obfd.
* symfile.h (dwarf2_debug_sections): New member addr.
* dwarf2expr.c (execute_stack_op): New case DW_OP_GNU_addr_index.
(ctx_no_get_addr_index): New function.
* dwarf2expr.h (dwarf_expr_context_funcs): New member get_addr_index.
(ctx_no_get_addr_index): Declare.
* dwarf2-frame.c (dwarf2_frame_ctx_funcs): Update.
* dwarf2loc.c (dwarf_expr_get_addr_index): New function.
(dwarf_expr_ctx_funcs): Update.
(needs_get_addr_index): New function.
(needs_frame_ctx_funcs): Update.
* dwarf2loc.h (dwarf2_read_addr_index): Declare.
* dwarf2read.c: #include "gdbcore.h".
(dwarf2_per_objfile): New members addr, dwo_files.
(dwarf2_elf_names): Add entry for addr.
(struct dwo_section_names): New type.
(dwo_section_names): New static global.
(dwarf2_cu): New members dwo_unit, addr_base, have_addr_base.
(dwarf2_per_cu_data): New member is_debug_types, all boolean uses of
old debug_types_section member updated to use this.
Rename member debug_types_section to info_or_types_section,
all uses updated.
(signatured_type): Rename member type_offset to type_offset_in_tu,
all uses updated. New member type_offset_in_section.
(struct dwo_sections): New type.
(struct dwo_unit): New type.
(struct dwo_file): New type.
(die_reader_specs): New member dwo_file.
(dwarf2_locate_sections): Watch for .debug_addr.
(zlib_decompress_section): Use sectp->owner instead of objfile->obfd.
(dwarf2_read_section): Get bfd of section from bfd's asection,
instead of objfile.
(create_cus_from_index): Initialize the_cu->info_or_types_section.
(create_signatured_type_table_from_index): Initialize
sig_type->info_or_types_section.
(dw2_get_file_names): Statement lists for type units with DWO files
live in the DWO file.
(create_debug_types_hash_table): New function.
(create_all_type_units): Rewrite.
(init_cu_die_reader): New arg dwo_file, all callers updated.
(init_and_read_dies_worker): Get section from
this_cu->info_or_types_section. Set sig_type->type_offset_in_section.
Watch for DW_AT_GNU_dwo_name and if present lookup the file and
continue reading the CU/TU from there.
(init_cutu_and_read_dies_no_follow): New arg dwo_file, all callers
updated. Get section from this_cu->info_or_types_section.
(create_all_comp_units): Initialize this_cu->info_or_types_section.
(skip_one_die): New cases DW_FORM_GNU_addr_index,
DW_FORM_GNU_str_index.
(hash_dwo_file, eq_dwo_file): New functions.
(allocate_dwo_file_hash_table): New function.
(hash_dwo_unit, eq_dwo_unit): New functions.
(allocate_dwo_unit_table): New function.
(dwarf2_locate_dwo_sections): New function.
(struct create_dwo_info_table_data): New type.
(create_debug_info_hash_table_reader): New function.
(create_debug_info_hash_table): New function.
(try_open_dwo_file, open_dwo_file, init_dwo_file): New function.
(lookup_dwo_file): New function.
(lookup_dwo_comp_unit, lookup_dwo_type_unit): New functions.
(free_dwo_file, free_dwo_file_cleanup): New functions.
(free_dwo_file_from_slot, free_dwo_files): New functions.
(dwarf2_get_pc_bounds): Handle DW_FORM_GNU_addr_index.
(dwarf2_record_block_ranges): Ditto.
(read_partial_die): Ditto.
(process_enumeration_scope): Update to use type_offset_in_section.
(read_full_die_1): New function.
(read_full_die): Rewrite.
(read_attribute_value): New cases DW_FORM_GNU_addr_index,
DW_FORM_GNU_str_index.
(read_addr_index_1, read_addr_index): New functions.
(read_addr_index_from_leb128): New function.
(struct dwarf2_read_addr_index_data): New type.
(dwarf2_read_addr_index_reader): New function.
(dwarf2_read_addr_index): New function.
(read_str_index): New function.
(leb128_size): New function.
(dwarf_decode_line_header): Delete arg abfd, all callers updated.
If processing a type unit from a DWO file, get the line section
from the DWO file.
(var_decode_location): Watch for DW_OP_GNU_addr_index.
(dwarf2_const_value_attr): New cases DW_FORM_GNU_addr_index,
DW_FORM_GNU_str_index.
(lookup_die_type): Check whether section offset of type's die is
known before looking it up. Remove assert. Condition can
legimately happen for inter-cu type references.
(dwarf_attr_name): Handle Fission attributes.
(dwarf_form_name): Handle Fission forms.
(dump_die_shallow): New cases DW_FORM_GNU_addr_index,
DW_FORM_GNU_str_index.
(follow_die_sig): Update to use type_offset_in_section.
(decode_locdesc): New case DW_OP_GNU_addr_index.
(skip_form_bytes): New cases DW_FORM_GNU_addr_index,
DW_FORM_GNU_str_index.
(cu_debug_loc_section): New function.
(fill_in_loclist_baton, dwarf2_symbol_mark_computed): Call it.
(dwarf2_per_objfile_free): Unmap .debug_addr section.
Free DWO files if present.
* xcoffread.c (dwarf2_xcoff_names): Add .debug_addr.
testsuite/
* gdb.dwarf2/dw2-intercu.S (.Ltype_int2_in_cu2): Renamed from
.Ltype_int_in_cu2. Use name "int2" instead of "int".
All uses updated.
* gdb.dwarf2/dw2-intercu.exp: Add "ptype int2" ahead of
"ptype func_cu1" to expand cu2 before cu1.
2012-04-29 01:22:14 +02:00
|
|
|
CORE_ADDR dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu,
|
|
|
|
unsigned int addr_index);
|
|
|
|
|
2003-04-13 17:43:35 +02:00
|
|
|
/* 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. */
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 16:24:18 +01:00
|
|
|
|
|
|
|
struct dwarf2_locexpr_baton
|
|
|
|
{
|
2011-10-13 00:04:12 +02:00
|
|
|
/* Pointer to the start of the location expression. Valid only if SIZE is
|
|
|
|
not zero. */
|
2010-05-26 17:21:13 +02:00
|
|
|
const gdb_byte *data;
|
2003-04-13 17:43:35 +02:00
|
|
|
|
2011-10-13 00:04:12 +02:00
|
|
|
/* Length of the location expression. For optimized out expressions it is
|
|
|
|
zero. */
|
2012-07-26 04:03:16 +02:00
|
|
|
size_t size;
|
2003-04-13 17:43:35 +02:00
|
|
|
|
2008-03-18 20:40:47 +01:00
|
|
|
/* The compilation unit containing the symbol whose location
|
|
|
|
we're computing. */
|
|
|
|
struct dwarf2_per_cu_data *per_cu;
|
2003-04-13 17:43:35 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
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. */
|
2010-05-26 17:21:13 +02:00
|
|
|
const gdb_byte *data;
|
2003-04-13 17:43:35 +02:00
|
|
|
|
|
|
|
/* Length of the location list. */
|
2012-07-26 04:03:16 +02:00
|
|
|
size_t size;
|
2003-04-13 17:43:35 +02:00
|
|
|
|
2008-03-18 20:40:47 +01:00
|
|
|
/* The compilation unit containing the symbol whose location
|
|
|
|
we're computing. */
|
|
|
|
struct dwarf2_per_cu_data *per_cu;
|
* dwarf2-frame.c (struct dwarf2_cie): Make initial_instructions, end
"const gdb_byte *".
(struct dwarf2_fde): Make instructions, end "const gdb_byte *".
(execute_cfa_program): Update to match API of leb128 functions.
(read_1_byte, read_4_bytes, read_8_bytes): Make buf parameter
"const gdb_byte *".
(read_unsigned_leb128, read_signed_leb128): Delete.
(read_initial_length): Change type of buf argument to
"const gdb_byte *".
(read_encoded_value): Update to match API of leb128 functions.
(decode_frame_entry): Change result to "const gdb_byte *", and
similarly for "start" parameter.
(decode_frame_entry_1): Ditto. Use new leb128 reader functions.
(dwarf2_build_frame_info): Change local frame_ptr to
"const gdb_byte *".
* dwarf2expr.c (safe_read_uleb128, safe_read_sleb128): Replaces
read_uleb128, read_sleb128. All callers updated.
(safe_skip_leb128): New function.
(dwarf_block_to_dwarf_reg): Update to match API of leb128 functions.
Call gdb_read_uleb128, gdb_skip_leb128 instead of read_uleb128.
(dwarf_block_to_dwarf_reg_deref): Update to match API of leb128
functions. Call gdb_read_uleb128, gdb_read_sleb128 instead of
read_uleb128, read_sleb128.
(dwarf_block_to_fb_offset, dwarf_block_to_sp_offset): Ditto.
(execute_stack_op): Update to match API of leb128 functions.
* dwarf2expr.h: #include "leb128.h".
(read_uleb128, read_sleb128): Delete.
(gdb_read_uleb128, gdb_read_sleb128, gdb_skip_leb128): New functions.
(safe_read_uleb128, safe_read_sleb128, safe_skip_leb128): Declare.
* dwarf2loc.c (debug_loc_kind): New enum.
(decode_debug_loc_addresses): New function.
(decode_debug_loc_dwo_addresses): New function.
(dwarf2_find_location_expression): Rewrite.
(dwarf2_compile_expr_to_ax): Update to match API of leb128 functions.
(locexpr_describe_location_piece): Ditto.
(disassemble_dwarf_expression): Ditto.
(locexpr_describe_location_1): Ditto.
(loclist_describe_location): Rewrite.
* dwarf2loc.h (dwarf2_loclist_baton): New member "from_dwo".
* dwarf2read.c (die_reader_specs): New member "buffer_end".
(dwarf2_section_buffer_overflow_complaint): Renamed from
dwarf2_macros_too_long_complaint. All callers updated.
(skip_leb128): Delete.
(init_cu_die_reader): Initialize reader->buffer_end.
(skip_one_die): Replace call to skip_leb128 with safe_skip_leb128.
(skip_form_bytes): New arg buffer_end. All callers updated.
Replace call to skip_leb128 with gdb_skip_leb128.
(skip_unknown_opcode): New arg mac_end. All callers updated.
(fill_in_loclist_baton): Initialize baton->from_dwo.
2012-05-22 20:45:22 +02:00
|
|
|
|
|
|
|
/* Non-zero if the location list lives in .debug_loc.dwo.
|
|
|
|
The format of entries in this section are different. */
|
|
|
|
unsigned char from_dwo;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 16:24:18 +01:00
|
|
|
};
|
|
|
|
|
2013-10-09 16:28:22 +02:00
|
|
|
/* A dynamic property is either expressed as a single location expression
|
|
|
|
or a location list. If the property is an indirection, pointing to
|
|
|
|
another die, keep track of the targeted type in REFERENCED_TYPE. */
|
|
|
|
|
|
|
|
struct dwarf2_property_baton
|
|
|
|
{
|
|
|
|
/* If the property is an indirection, we need to evaluate the location
|
|
|
|
LOCEXPR or LOCLIST in the context of the type REFERENCED_TYPE.
|
|
|
|
If NULL, the location is the actual value of the property. */
|
|
|
|
struct type *referenced_type;
|
|
|
|
union
|
|
|
|
{
|
|
|
|
/* Location expression. */
|
|
|
|
struct dwarf2_locexpr_baton locexpr;
|
|
|
|
|
|
|
|
/* Location list to be evaluated in the context of REFERENCED_TYPE. */
|
|
|
|
struct dwarf2_loclist_baton loclist;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
|
2009-06-04 14:28:39 +02:00
|
|
|
extern const struct symbol_computed_ops dwarf2_locexpr_funcs;
|
|
|
|
extern const struct symbol_computed_ops dwarf2_loclist_funcs;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 16:24:18 +01:00
|
|
|
|
2013-03-20 Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
PR symtab/8421:
* coffread.c (coff_register_index): New global.
(process_coff_symbol, coff_read_enum_type): Set
SYMBOL_ACLASS_INDEX.
(_initialize_coffread): Initialize new global.
* dwarf2loc.c (locexpr_find_frame_base_location)
(dwarf2_block_frame_base_locexpr_funcs)
(loclist_find_frame_base_location)
(dwarf2_block_frame_base_loclist_funcs): New.
(dwarf_expr_frame_base_1): Call SYMBOL_BLOCK_OPS, remove internal_error.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Add location_has_loclist.
* dwarf2loc.h (dwarf2_block_frame_base_locexpr_funcs)
(dwarf2_block_frame_base_loclist_funcs): New.
* dwarf2read.c (dwarf2_locexpr_index, dwarf2_loclist_index)
(dwarf2_locexpr_block_index, dwarf2_loclist_block_index): New
globals.
(read_func_scope): Update.
(fixup_go_packaging, mark_common_block_symbol_computed)
(var_decode_location, new_symbol_full, dwarf2_const_value):
Set SYMBOL_ACLASS_INDEX.
(dwarf2_symbol_mark_computed): Likewise. Add 'is_block' argument.
(_initialize_dwarf2_read): Initialize new globals.
* jit.c (finalize_symtab): Set SYMBOL_ACLASS_INDEX.
* jv-lang.c (add_class_symbol): Set SYMBOL_ACLASS_INDEX.
* mdebugread.c (mdebug_register_index, mdebug_regparm_index): New
globals.
(parse_symbol, psymtab_to_symtab_1): Set SYMBOL_ACLASS_INDEX.
(_initialize_mdebugread): Initialize new globals.
* psympriv.h (struct partial_symbol) <aclass>: Update comment.
* stabsread.c (patch_block_stabs): Set SYMBOL_ACLASS_INDEX.
(stab_register_index, stab_regparm_index): New globals.
(define_symbol, read_enum_type, common_block_end): Set
SYMBOL_ACLASS_INDEX.
(_initialize_stabsread): Initialize new globals.
* symtab.c (next_aclass_value, symbol_impl, symbol_impls): New
globals.
(MAX_SYMBOL_IMPLS): New define.
(register_symbol_computed_impl, register_symbol_block_impl)
(register_symbol_register_impl)
(initialize_ordinary_address_classes): New functions.
(_initialize_symtab): Call initialize_ordinary_address_classes.
* symtab.h (enum address_class) <LOC_FINAL_VALUE>: New constant.
(struct symbol_impl): New.
(SYMBOL_ACLASS_BITS): New define.
(struct symbol) <aclass, ops>: Remove fields.
<aclass_index>: New field.
(symbol_impls): Declare.
(SYMBOL_CLASS, SYMBOL_COMPUTED_OPS, SYMBOL_REGISTER_OPS): Redefine.
(SYMBOL_IMPL, SYMBOL_ACLASS_INDEX): New defines.
(register_symbol_computed_impl, register_symbol_block_impl)
(register_symbol_register_impl): Declare.
(struct symbol_computed_ops): Add location_has_loclist.
(struct symbol_block_ops): New.
(SYMBOL_BLOCK_OPS): New.
* xcoffread.c (process_xcoff_symbol): Set SYMBOL_ACLASS_INDEX.
2013-03-20 19:33:05 +01:00
|
|
|
extern const struct symbol_block_ops dwarf2_block_frame_base_locexpr_funcs;
|
|
|
|
extern const struct symbol_block_ops dwarf2_block_frame_base_loclist_funcs;
|
|
|
|
|
2011-02-17 17:20:44 +01:00
|
|
|
/* Compile a DWARF location expression to an agent expression.
|
|
|
|
|
|
|
|
EXPR is the agent expression we are building.
|
|
|
|
LOC is the agent value we modify.
|
|
|
|
ARCH is the architecture.
|
|
|
|
ADDR_SIZE is the size of addresses, in bytes.
|
|
|
|
OP_PTR is the start of the location expression.
|
|
|
|
OP_END is one past the last byte of the location expression.
|
|
|
|
|
|
|
|
This will throw an exception for various kinds of errors -- for
|
|
|
|
example, if the expression cannot be compiled, or if the expression
|
|
|
|
is invalid. */
|
|
|
|
|
|
|
|
extern void dwarf2_compile_expr_to_ax (struct agent_expr *expr,
|
|
|
|
struct axs_value *loc,
|
|
|
|
struct gdbarch *arch,
|
|
|
|
unsigned int addr_size,
|
|
|
|
const gdb_byte *op_ptr,
|
|
|
|
const gdb_byte *op_end,
|
|
|
|
struct dwarf2_per_cu_data *per_cu);
|
|
|
|
|
gdb/
Recognize virtual tail call frames.
* Makefile.in (SFILES): Add dwarf2-frame-tailcall.c.
(HFILES_NO_SRCDIR): Add dwarf2-frame-tailcall.h.
(COMMON_OBS): Add dwarf2-frame-tailcall.o.
* dwarf2-frame-tailcall.c: New file.
* dwarf2-frame-tailcall.h: New file.
* dwarf2-frame.c: Include dwarf2-frame-tailcall.h.
(execute_cfa_program): New function comment. Return INSN_PTR. Reset
REGS.PREV only after CIE execution.
(struct dwarf2_frame_cache): New field tailcall_cache.
(dwarf2_frame_cache): New variables entry_pc, entry_cfa_sp_offset,
entry_cfa_sp_offset_p and instr. Execute FDE instructions in two
parts, try to find entry_cfa_sp_offset. Call
dwarf2_tailcall_sniffer_first.
(dwarf2_frame_prev_register): Call dwarf2_tailcall_prev_register_first
when appropriate.
(dwarf2_frame_dealloc_cache): New function.
(dwarf2_frame_sniffer): Preinitialize cache by dwarf2_frame_cache.
(dwarf2_frame_unwind): Install dwarf2_frame_dealloc_cache.
(dwarf2_signal_frame_unwind): Do not install dwarf2_frame_dealloc_cache.
(dwarf2_append_unwinders): Add dwarf2_tailcall_frame_unwind.
(dwarf2_frame_cfa): Support also dwarf2_tailcall_frame_unwind.
* dwarf2loc.c (func_addr_to_tail_call_list)
(tailcall_dump, call_sitep, VEC (call_sitep), chain_candidate)
(call_site_find_chain_1, call_site_find_chain): New.
* dwarf2loc.h (struct call_site_chain): New.
(call_site_find_chain): New declaration.
* frame.c (get_frame_address_in_block): Support also TAILCALL_FRAME.
* frame.h (enum frame_type): New entry TAILCALL_FRAME.
* python/py-frame.c (gdbpy_initialize_frames): Add TAILCALL_FRAME.
* stack.c (frame_info): Support also TAILCALL_FRAME.
gdb/doc/
Recognize virtual tail call frames.
* gdb.texinfo (Optimized Code): Add reference to Tail Call Frames.
(Tail Call Frames): New node.
(Frames In Python): Add gdb.TAILCALL_FRAME.
gdb/testsuite/
Recognize virtual tail call frames.
* gdb.arch/amd64-entry-value.cc (c, a, b, amb_z, amb_y, amb_x, amb)
(amb_b, amb_a): New.
(main): Call a and b.
* gdb.arch/amd64-entry-value.exp (tailcall: breakhere, tailcall: bt)
(tailcall: p i, tailcall: p j, set $sp0=$sp, up, p $sp0 == $sp, frame 3)
(p $sp0 + sizeof (void *) == $sp, ambiguous: breakhere, ambiguous: bt):
New tests.
2011-10-09 21:26:44 +02:00
|
|
|
/* Determined tail calls for constructing virtual tail call frames. */
|
|
|
|
|
|
|
|
struct call_site_chain
|
|
|
|
{
|
|
|
|
/* Initially CALLERS == CALLEES == LENGTH. For partially ambiguous result
|
|
|
|
CALLERS + CALLEES < LENGTH. */
|
|
|
|
int callers, callees, length;
|
|
|
|
|
|
|
|
/* Variably sized array with LENGTH elements. Later [0..CALLERS-1] contain
|
|
|
|
top (GDB "prev") sites and [LENGTH-CALLEES..LENGTH-1] contain bottom
|
|
|
|
(GDB "next") sites. One is interested primarily in the PC field. */
|
|
|
|
struct call_site *call_site[1];
|
|
|
|
};
|
|
|
|
|
|
|
|
struct call_site_stuff;
|
|
|
|
extern struct call_site_chain *call_site_find_chain (struct gdbarch *gdbarch,
|
|
|
|
CORE_ADDR caller_pc,
|
|
|
|
CORE_ADDR callee_pc);
|
|
|
|
|
2014-05-14 22:30:37 +02:00
|
|
|
/* A helper function to convert a DWARF register to an arch register.
|
|
|
|
ARCH is the architecture.
|
|
|
|
DWARF_REG is the register.
|
|
|
|
This will throw an exception if the DWARF register cannot be
|
|
|
|
translated to an architecture register. */
|
|
|
|
|
|
|
|
extern int dwarf2_reg_to_regnum_or_error (struct gdbarch *arch, int dwarf_reg);
|
|
|
|
|
2005-07-12 15:06:54 +02:00
|
|
|
#endif /* dwarf2loc.h */
|