{ Copyright (c) 2003-2006 by Peter Vreman and Florian Klaempfl This units contains support for DWARF debug info generation 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., 675 Mass Ave, Cambridge, MA 02139, USA. **************************************************************************** } unit dbgdwarf; {$i fpcdefs.inc} interface uses aasmtai, symtype, DbgBase; type TDebugInfoDwarf = class(TDebugInfo) private currfileidx : longint; procedure append_dwarftag(list:taasmoutput;def:tdef); public procedure insertlineinfo(list:taasmoutput);override; end; implementation uses cutils, globals, Systems, aasmbase, finput, fmodule, symconst, symdef ; type { Tag names and codes. } tdwarf_tag = (DW_TAG_padding := $00,DW_TAG_array_type := $01, DW_TAG_class_type := $02,DW_TAG_entry_point := $03, DW_TAG_enumeration_type := $04,DW_TAG_formal_parameter := $05, DW_TAG_imported_declaration := $08,DW_TAG_label := $0a, DW_TAG_lexical_block := $0b,DW_TAG_member := $0d, DW_TAG_pointer_type := $0f,DW_TAG_reference_type := $10, DW_TAG_compile_unit := $11,DW_TAG_string_type := $12, DW_TAG_structure_type := $13,DW_TAG_subroutine_type := $15, DW_TAG_typedef := $16,DW_TAG_union_type := $17, DW_TAG_unspecified_parameters := $18, DW_TAG_variant := $19,DW_TAG_common_block := $1a, DW_TAG_common_inclusion := $1b,DW_TAG_inheritance := $1c, DW_TAG_inlined_subroutine := $1d,DW_TAG_module := $1e, DW_TAG_ptr_to_member_type := $1f,DW_TAG_set_type := $20, DW_TAG_subrange_type := $21,DW_TAG_with_stmt := $22, DW_TAG_access_declaration := $23,DW_TAG_base_type := $24, DW_TAG_catch_block := $25,DW_TAG_const_type := $26, DW_TAG_constant := $27,DW_TAG_enumerator := $28, DW_TAG_file_type := $29,DW_TAG_friend := $2a, DW_TAG_namelist := $2b,DW_TAG_namelist_item := $2c, DW_TAG_packed_type := $2d,DW_TAG_subprogram := $2e, DW_TAG_template_type_param := $2f,DW_TAG_template_value_param := $30, DW_TAG_thrown_type := $31,DW_TAG_try_block := $32, DW_TAG_variant_part := $33,DW_TAG_variable := $34, DW_TAG_volatile_type := $35, { DWARF 3. } DW_TAG_dwarf_procedure := $36, DW_TAG_restrict_type := $37,DW_TAG_interface_type := $38, DW_TAG_namespace := $39,DW_TAG_imported_module := $3a, DW_TAG_unspecified_type := $3b,DW_TAG_partial_unit := $3c, DW_TAG_imported_unit := $3d, { SGI/MIPS Extensions. } DW_TAG_MIPS_loop := $4081, { HP extensions. See: ftp://ftp.hp.com/pub/lang/tools/WDB/wdb-4.0.tar.gz . } DW_TAG_HP_array_descriptor := $4090, { GNU extensions. } { For FORTRAN 77 and Fortran 90. } DW_TAG_format_label := $4101, { For C++. } DW_TAG_function_template := $4102,DW_TAG_class_template := $4103, DW_TAG_GNU_BINCL := $4104,DW_TAG_GNU_EINCL := $4105, { Extensions for UPC. See: http://upc.gwu.edu/~upc. } DW_TAG_upc_shared_type := $8765,DW_TAG_upc_strict_type := $8766, DW_TAG_upc_relaxed_type := $8767, { PGI (STMicroelectronics) extensions. No documentation available. } DW_TAG_PGI_kanji_type := $A000, DW_TAG_PGI_interface_block := $A020); const DW_TAG_lo_user = $4080; DW_TAG_hi_user = $ffff; { Flag that tells whether entry has a child or not. } DW_children_no = 0; DW_children_yes = 1; type { Attribute names and codes. } tdwarf_attribute = (DW_AT_sibling := $01,DW_AT_location := $02, DW_AT_name := $03,DW_AT_ordering := $09, DW_AT_subscr_data := $0a,DW_AT_byte_size := $0b, DW_AT_bit_offset := $0c,DW_AT_bit_size := $0d, DW_AT_element_list := $0f,DW_AT_stmt_list := $10, DW_AT_low_pc := $11,DW_AT_high_pc := $12, DW_AT_language := $13,DW_AT_member := $14, DW_AT_discr := $15,DW_AT_discr_value := $16, DW_AT_visibility := $17,DW_AT_import := $18, DW_AT_string_length := $19,DW_AT_common_reference := $1a, DW_AT_comp_dir := $1b,DW_AT_const_value := $1c, DW_AT_containing_type := $1d,DW_AT_default_value := $1e, DW_AT_inline := $20,DW_AT_is_optional := $21, DW_AT_lower_bound := $22,DW_AT_producer := $25, DW_AT_prototyped := $27,DW_AT_return_addr := $2a, DW_AT_start_scope := $2c,DW_AT_stride_size := $2e, DW_AT_upper_bound := $2f,DW_AT_abstract_origin := $31, DW_AT_accessibility := $32,DW_AT_address_class := $33, DW_AT_artificial := $34,DW_AT_base_types := $35, DW_AT_calling_convention := $36,DW_AT_count := $37, DW_AT_data_member_location := $38,DW_AT_decl_column := $39, DW_AT_decl_file := $3a,DW_AT_decl_line := $3b, DW_AT_declaration := $3c,DW_AT_discr_list := $3d, DW_AT_encoding := $3e,DW_AT_external := $3f, DW_AT_frame_base := $40,DW_AT_friend := $41, DW_AT_identifier_case := $42,DW_AT_macro_info := $43, DW_AT_namelist_items := $44,DW_AT_priority := $45, DW_AT_segment := $46,DW_AT_specification := $47, DW_AT_static_link := $48,DW_AT_type := $49, DW_AT_use_location := $4a,DW_AT_variable_parameter := $4b, DW_AT_virtuality := $4c,DW_AT_vtable_elem_location := $4d, { DWARF 3 values. } DW_AT_allocated := $4e,DW_AT_associated := $4f, DW_AT_data_location := $50,DW_AT_stride := $51, DW_AT_entry_pc := $52,DW_AT_use_UTF8 := $53, DW_AT_extension := $54,DW_AT_ranges := $55, DW_AT_trampoline := $56,DW_AT_call_column := $57, DW_AT_call_file := $58,DW_AT_call_line := $59, { SGI/MIPS extensions. } DW_AT_MIPS_fde := $2001,DW_AT_MIPS_loop_begin := $2002, DW_AT_MIPS_tail_loop_begin := $2003,DW_AT_MIPS_epilog_begin := $2004, DW_AT_MIPS_loop_unroll_factor := $2005, DW_AT_MIPS_software_pipeline_depth := $2006, DW_AT_MIPS_linkage_name := $2007,DW_AT_MIPS_stride := $2008, DW_AT_MIPS_abstract_name := $2009,DW_AT_MIPS_clone_origin := $200a, DW_AT_MIPS_has_inlines := $200b, { HP extensions. } DW_AT_HP_block_index := $2000, DW_AT_HP_unmodifiable := $2001,DW_AT_HP_actuals_stmt_list := $2010, DW_AT_HP_proc_per_section := $2011,DW_AT_HP_raw_data_ptr := $2012, DW_AT_HP_pass_by_reference := $2013,DW_AT_HP_opt_level := $2014, DW_AT_HP_prof_version_id := $2015,DW_AT_HP_opt_flags := $2016, DW_AT_HP_cold_region_low_pc := $2017,DW_AT_HP_cold_region_high_pc := $2018, DW_AT_HP_all_variables_modifiable := $2019, DW_AT_HP_linkage_name := $201a,DW_AT_HP_prof_flags := $201b, { GNU extensions. } DW_AT_sf_names := $2101,DW_AT_src_info := $2102, DW_AT_mac_info := $2103,DW_AT_src_coords := $2104, DW_AT_body_begin := $2105,DW_AT_body_end := $2106, DW_AT_GNU_vector := $2107, { VMS extensions. } DW_AT_VMS_rtnbeg_pd_address := $2201, { UPC extension. } DW_AT_upc_threads_scaled := $3210, { PGI (STMicroelectronics) extensions. } DW_AT_PGI_lbase := $3a00, DW_AT_PGI_soffset := $3a01,DW_AT_PGI_lstride := $3a02 ); const { Implementation-defined range start. } DW_AT_lo_user = $2000; { Implementation-defined range end. } DW_AT_hi_user = $3ff0; type { Source language names and codes. } tdwarf_source_language = (DW_LANG_C89 := $0001,DW_LANG_C := $0002,DW_LANG_Ada83 := $0003, DW_LANG_C_plus_plus := $0004,DW_LANG_Cobol74 := $0005, DW_LANG_Cobol85 := $0006,DW_LANG_Fortran77 := $0007, DW_LANG_Fortran90 := $0008,DW_LANG_Pascal83 := $0009, DW_LANG_Modula2 := $000a,DW_LANG_Java := $000b, { DWARF 3. } DW_LANG_C99 := $000c,DW_LANG_Ada95 := $000d, DW_LANG_Fortran95 := $000e, { MIPS. } DW_LANG_Mips_Assembler := $8001, { UPC. } DW_LANG_Upc := $8765 ); const { Implementation-defined range start. } DW_LANG_lo_user = $8000; { Implementation-defined range start. } DW_LANG_hi_user = $ffff; type { Names and codes for macro information. } tdwarf_macinfo_record_type = (DW_MACINFO_define := 1,DW_MACINFO_undef := 2, DW_MACINFO_start_file := 3,DW_MACINFO_end_file := 4, DW_MACINFO_vendor_ext := 255); procedure TDebugInfoDwarf.append_dwarftag(list:taasmoutput;def:tdef); procedure append_dwarftag_orddef(list:taasmoutput;def:torddef); begin case def.typ of uvoid : ; uchar : ; uwidechar : ; bool8bit : ; bool16bit : ; bool32bit : ; u64bit : ; s64bit : ; {u32bit : result:=def_stab_number(s32inttype.def)+';0;-1;'); } else ; end; end; begin end; procedure TDebugInfoDwarf.insertlineinfo(list:taasmoutput); var currfileinfo, lastfileinfo : tfileposinfo; currfuncname : pstring; currsectype : tasmsectiontype; hlabel : tasmlabel; hp : tai; infile : tinputfile; begin FillChar(lastfileinfo,sizeof(lastfileinfo),0); currfuncname:=nil; currsectype:=sec_code; hp:=Tai(list.first); while assigned(hp) do begin case hp.typ of ait_section : currsectype:=tai_section(hp).sectype; ait_function_name : currfuncname:=tai_function_name(hp).funcname; ait_force_line : lastfileinfo.line:=-1; end; if (currsectype=sec_code) and (hp.typ=ait_instruction) then begin currfileinfo:=tailineinfo(hp).fileinfo; { file changed ? (must be before line info) } if (currfileinfo.fileindex<>0) and (lastfileinfo.fileindex<>currfileinfo.fileindex) then begin infile:=current_module.sourcefiles.get_file(currfileinfo.fileindex); if assigned(infile) then begin inc(currfileidx); if (infile.path^<>'') then list.insertbefore(tai_file.create( BsToSlash(FixPath(infile.path^,false)+FixFileName(infile.name^)),currfileidx ),hp) else list.insertbefore(tai_file.create( FixFileName(infile.name^),currfileidx),hp); { force new line info } lastfileinfo.line:=-1; end; end; { line changed ? } if (lastfileinfo.line<>currfileinfo.line) and (currfileinfo.line<>0) then list.insertbefore(tai_loc.create( currfileidx,currfileinfo.line,currfileinfo.column),hp); lastfileinfo:=currfileinfo; end; hp:=tai(hp.next); end; end; const dbg_dwarf_info : tdbginfo = ( id : dbg_dwarf; idtxt : 'DWARF'; ); initialization RegisterDebugInfo(dbg_dwarf_info,TDebugInfoDwarf); end.