mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-10-29 07:01:44 +01:00
1743 lines
66 KiB
ObjectPascal
1743 lines
66 KiB
ObjectPascal
{
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Copyright (c) 2003-2004 by Peter Vreman and Florian Klaempfl
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This units contains support for STABS debug info generation
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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 2 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit dbgstabs;
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{$i fpcdefs.inc}
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interface
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uses
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cclasses,
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dbgbase,cgbase,
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symtype,symdef,symsym,symtable,symbase,
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aasmtai,aasmdata;
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const
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{ stab types }
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N_GSYM = $20;
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N_STSYM = 38; { initialized const }
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N_LCSYM = 40; { non initialized variable}
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N_Function = $24; { function or const }
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N_TextLine = $44;
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N_DataLine = $46;
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N_BssLine = $48;
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N_RSYM = $40; { register variable }
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N_LSYM = $80;
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N_tsym = 160;
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N_SourceFile = $64;
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{ APPLE LOCAL N_OSO: This is the stab that associated the .o file with the
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N_SO stab, in the case where debug info is mostly stored in the .o file. }
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N_OSO = $66;
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N_IncludeFile = $84;
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N_BINCL = $82;
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N_EINCL = $A2;
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N_LBRAC = $C0;
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N_EXCL = $C2;
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N_RBRAC = $E0;
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type
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TDebugInfoStabs=class(TDebugInfo)
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private
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writing_def_stabs : boolean;
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global_stab_number : word;
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vardatadef: trecorddef;
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{ tsym writing }
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function sym_var_value(const s:string;arg:pointer):string;
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function sym_stabstr_evaluate(sym:tsym;const s:string;const vars:array of string):ansistring;
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procedure write_sym_stabstr(list:TAsmList;sym:tsym;const ss:ansistring);
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{ tdef writing }
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function def_stab_number(def:tdef):string;
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function def_stab_classnumber(def:tabstractrecorddef):string;
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function def_var_value(const s:string;arg:pointer):string;
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function def_stabstr_evaluate(def:tdef;const s:string;const vars:array of string):ansistring;
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procedure write_def_stabstr(list:TAsmList;def:tdef;const ss:ansistring);
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procedure field_add_stabstr(p:TObject;arg:pointer);
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procedure method_add_stabstr(p:TObject;arg:pointer);
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procedure field_write_defs(p:TObject;arg:pointer);
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function get_enum_defstr(def: tenumdef; lowerbound: longint): ansistring;
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function get_appendsym_paravar_reg(sym:tparavarsym;const typ,stabstr:string;reg: tregister): ansistring;
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protected
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procedure appendsym_staticvar(list:TAsmList;sym:tstaticvarsym);override;
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procedure appendsym_paravar(list:TAsmList;sym:tparavarsym);override;
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procedure appendsym_localvar(list:TAsmList;sym:tlocalvarsym);override;
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procedure appendsym_fieldvar(list:TAsmList;sym:tfieldvarsym);override;
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procedure appendsym_const(list:TAsmList;sym:tconstsym);override;
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procedure appendsym_type(list:TAsmList;sym:ttypesym);override;
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procedure appendsym_label(list:TAsmList;sym:tlabelsym);override;
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procedure beforeappenddef(list:TAsmList;def:tdef);override;
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procedure appenddef_ord(list:TAsmList;def:torddef);override;
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procedure appenddef_float(list:TAsmList;def:tfloatdef);override;
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procedure appenddef_file(list:TAsmList;def:tfiledef);override;
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procedure appenddef_enum(list:TAsmList;def:tenumdef);override;
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procedure appenddef_array(list:TAsmList;def:tarraydef);override;
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procedure appenddef_record(list:TAsmList;def:trecorddef);override;
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procedure appenddef_object(list:TAsmList;def:tobjectdef);override;
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procedure appenddef_pointer(list:TAsmList;def:tpointerdef);override;
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procedure appenddef_string(list:TAsmList;def:tstringdef);override;
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procedure appenddef_procvar(list:TAsmList;def:tprocvardef);override;
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procedure appenddef_variant(list:TAsmList;def:tvariantdef);override;
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procedure appenddef_set(list:TAsmList;def:tsetdef);override;
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procedure appenddef_formal(list:TAsmList;def:tformaldef);override;
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procedure appenddef_undefined(list:TAsmList;def: tundefineddef);override;
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procedure appendprocdef(list:TAsmList;def:tprocdef);override;
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public
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procedure inserttypeinfo;override;
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procedure insertmoduleinfo;override;
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procedure insertlineinfo(list:TAsmList);override;
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procedure referencesections(list:TAsmList);override;
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constructor Create;override;
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end;
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implementation
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uses
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SysUtils,cutils,cfileutl,
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systems,globals,globtype,verbose,constexp,
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symconst,defutil,
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cpuinfo,cpubase,paramgr,
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aasmbase,procinfo,
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finput,fmodule,ppu;
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function GetSymName(Sym : TSymEntry) : string;
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begin
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if Not (cs_stabs_preservecase in current_settings.globalswitches) then
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result := Sym.Name
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else
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result := Sym.RealName;
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end;
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function GetSymTableName(SymTable : TSymTable) : string;
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begin
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if Not (cs_stabs_preservecase in current_settings.globalswitches) then
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result := SymTable.Name^
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else
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result := SymTable.RealName^;
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end;
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const
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memsizeinc = 512;
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tagtypes = [
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recorddef,
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variantdef,
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enumdef,
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stringdef,
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filedef,
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objectdef
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];
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type
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get_var_value_proc=function(const s:string;arg:pointer):string of object;
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function string_evaluate(s:string;get_var_value:get_var_value_proc;get_var_value_arg:pointer;const vars:array of string):ansistring;
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(*
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S contains a prototype of a result. Stabstr_evaluate will expand
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variables and parameters.
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Output is s in ASCIIZ format, with the following expanded:
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${varname} - The variable name is expanded.
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$n - The parameter n is expanded.
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$$ - Is expanded to $
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*)
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const maxvalue=9;
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maxdata=1023;
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var i,j:byte;
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varname:string[63];
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varno,varcounter:byte;
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varvalues:array[0..9] of pshortstring;
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{1 kb of parameters is the limit. 256 extra bytes are allocated to
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ensure buffer integrity.}
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varvaluedata:array[0..maxdata+256] of char;
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varptr:Pchar;
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varidx : byte;
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len:longint;
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r:Pchar;
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begin
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{Two pass approach, first, calculate the length and receive variables.}
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i:=1;
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len:=0;
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varcounter:=0;
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varptr:=@varvaluedata[0];
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while i<=length(s) do
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begin
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if (s[i]='$') and (i<length(s)) then
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begin
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if s[i+1]='$' then
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begin
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inc(len);
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inc(i);
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end
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else if (s[i+1]='{') and (length(s)>2) and (i<length(s)-2) then
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begin
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varname:='';
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inc(i,2);
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repeat
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inc(varname[0]);
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varname[length(varname)]:=s[i];
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s[i]:=char(varcounter);
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inc(i);
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until s[i]='}';
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varvalues[varcounter]:=pshortstring(varptr);
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if varptr>@varvaluedata[maxdata] then
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internalerrorproc(200411152);
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pshortstring(varptr)^:=get_var_value(varname,get_var_value_arg);
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inc(len,length(pshortstring(varptr)^));
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inc(varptr,length(pshortstring(varptr)^)+1);
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inc(varcounter);
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end
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else if s[i+1] in ['1'..'9'] then
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begin
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varidx:=byte(s[i+1])-byte('1');
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if varidx>high(vars) then
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internalerror(200509263);
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inc(len,length(vars[varidx]));
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inc(i);
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end;
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end
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else
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inc(len);
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inc(i);
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end;
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{Second pass, writeout result.}
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setlength(result,len);
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r:=pchar(result);
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i:=1;
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while i<=length(s) do
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begin
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if (s[i]='$') and (i<length(s)) then
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begin
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if s[i+1]='$' then
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begin
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r^:='$';
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inc(r);
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inc(i);
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end
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else if (s[i+1]='{') and (length(s)>2) and (i<length(s)-2) then
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begin
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varname:='';
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inc(i,2);
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varno:=byte(s[i]);
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repeat
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inc(i);
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until s[i]='}';
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for j:=1 to length(varvalues[varno]^) do
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begin
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r^:=varvalues[varno]^[j];
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inc(r);
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end;
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end
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else if s[i+1] in ['0'..'9'] then
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begin
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for j:=1 to length(vars[byte(s[i+1])-byte('1')]) do
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begin
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r^:=vars[byte(s[i+1])-byte('1')][j];
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inc(r);
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end;
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inc(i);
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end
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end
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else
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begin
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r^:=s[i];
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inc(r);
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end;
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inc(i);
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end;
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{ verify that the length was correct }
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if r^<>#0 then
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internalerror(200802031);
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end;
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{****************************************************************************
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TDef support
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****************************************************************************}
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function TDebugInfoStabs.def_stab_number(def:tdef):string;
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begin
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{ procdefs only need a number, mark them as already written
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so they won't be written implicitly }
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if (def.typ=procdef) then
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def.dbg_state:=dbg_state_written;
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{ Stab must already be written, or we must be busy writing it }
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if writing_def_stabs and
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not(def.dbg_state in [dbg_state_writing,dbg_state_written,dbg_state_queued]) then
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internalerror(200403091);
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{ Keep track of used stabs, this info is only useful for stabs
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referenced by the symbols. Definitions will always include all
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required stabs }
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if def.dbg_state=dbg_state_unused then
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begin
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def.dbg_state:=dbg_state_used;
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deftowritelist.Add(def);
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end;
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{ Need a new number? }
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if def.stab_number=0 then
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begin
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inc(global_stab_number);
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{ classes require 2 numbers }
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if is_class(def) then
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inc(global_stab_number);
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def.stab_number:=global_stab_number;
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if global_stab_number>=defnumberlist.count then
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defnumberlist.count:=global_stab_number+250;
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defnumberlist[global_stab_number]:=def;
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end;
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result:=tostr(def.stab_number);
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end;
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function TDebugInfoStabs.def_stab_classnumber(def:tabstractrecorddef):string;
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begin
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if def.stab_number=0 then
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def_stab_number(def);
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if (def.typ=objectdef) and (tobjectdef(def).objecttype=odt_class) then
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result:=tostr(def.stab_number-1)
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else
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result:=tostr(def.stab_number);
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end;
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function TDebugInfoStabs.def_var_value(const s:string;arg:pointer):string;
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var
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def : tdef;
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begin
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def:=tdef(arg);
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result:='';
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if s='numberstring' then
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result:=def_stab_number(def)
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else if s='sym_name' then
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begin
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if assigned(def.typesym) then
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result:=GetSymName(Ttypesym(def.typesym));
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end
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else if s='N_LSYM' then
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result:=tostr(N_LSYM)
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else if s='savesize' then
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result:=tostr(def.size);
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end;
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function TDebugInfoStabs.def_stabstr_evaluate(def:tdef;const s:string;const vars:array of string):ansistring;
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begin
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result:=string_evaluate(s,@def_var_value,def,vars);
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end;
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procedure TDebugInfoStabs.field_add_stabstr(p:TObject;arg:pointer);
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var
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spec : string[3];
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varsize : asizeint;
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newss : ansistring;
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ss : pansistring absolute arg;
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begin
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if (tsym(p).visibility=vis_hidden) then
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exit;
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{ static variables from objects are like global objects }
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if (Tsym(p).typ=fieldvarsym) and
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not(sp_static in Tsym(p).symoptions) then
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begin
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case tsym(p).visibility of
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vis_private,
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vis_strictprivate :
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spec:='/0';
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vis_protected,
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vis_strictprotected :
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spec:='/1';
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else
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spec:='';
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end;
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if (tabstractrecordsymtable(tsym(p).owner).usefieldalignment<>bit_alignment) then
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begin
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varsize:=tfieldvarsym(p).vardef.size;
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{ open arrays made overflows !! }
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{ how can a record/object/class contain an open array? (JM) }
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{$ifdef cpu16bitaddr}
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if varsize>$fff then
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varsize:=$fff;
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{$else cpu16bitaddr}
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if varsize>$fffffff then
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varsize:=$fffffff;
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{$endif cpu16bitaddr}
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newss:=def_stabstr_evaluate(nil,'$1:$2,$3,$4;',[GetSymName(tfieldvarsym(p)),
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spec+def_stab_number(tfieldvarsym(p).vardef),
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tostr(TConstExprInt(tfieldvarsym(p).fieldoffset)*8),tostr(varsize*8)])
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end
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else
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newss:=def_stabstr_evaluate(nil,'$1:$2,$3,$4;',[GetSymName(tfieldvarsym(p)),
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spec+def_stab_number(tfieldvarsym(p).vardef),
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tostr(TConstExprInt(tfieldvarsym(p).fieldoffset)),tostr(tfieldvarsym(p).vardef.packedbitsize)]);
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ss^:=ss^+newss;
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end;
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end;
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procedure TDebugInfoStabs.method_add_stabstr(p:TObject;arg:pointer);
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var
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virtualind,argnames : string;
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pd : tprocdef;
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lindex : longint;
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arglength : byte;
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sp : char;
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i : integer;
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parasym : tparavarsym;
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newss : ansistring;
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ss : pansistring absolute arg;
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begin
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if tsym(p).typ = procsym then
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begin
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pd :=tprocdef(tprocsym(p).ProcdefList[0]);
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if (po_virtualmethod in pd.procoptions) and
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not is_objectpascal_helper(pd.struct) then
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begin
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lindex := pd.extnumber;
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{doesnt seem to be necessary
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lindex := lindex or $80000000;}
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virtualind := '*'+tostr(lindex)+';'+def_stab_classnumber(pd.struct)+';'
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end
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else
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virtualind := '.';
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{ used by gdbpas to recognize constructor and destructors }
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if (pd.proctypeoption=potype_constructor) then
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argnames:='__ct__'
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else if (pd.proctypeoption=potype_destructor) then
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argnames:='__dt__'
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else
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argnames := '';
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{ arguments are not listed here }
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{we don't need another definition}
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for i:=0 to pd.paras.count-1 do
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begin
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parasym:=tparavarsym(pd.paras[i]);
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if Parasym.vardef.typ = formaldef then
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begin
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case Parasym.varspez of
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vs_var :
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argnames := argnames+'3var';
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vs_const :
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argnames:=argnames+'5const';
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vs_out :
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argnames:=argnames+'3out';
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vs_constref :
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argnames:=argnames+'8constref';
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end;
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end
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else
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begin
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{ if the arg definition is like (v: ^byte;..
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there is no sym attached to data !!! }
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if assigned(Parasym.vardef.typesym) then
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begin
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arglength := length(GetSymName(Parasym.vardef.typesym));
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argnames := argnames + tostr(arglength)+GetSymName(Parasym.vardef.typesym);
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end
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else
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argnames:=argnames+'11unnamedtype';
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end;
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end;
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{ here 2A must be changed for private and protected }
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{ 0 is private 1 protected and 2 public }
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case tsym(p).visibility of
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vis_private,
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vis_strictprivate :
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sp:='0';
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vis_protected,
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vis_strictprotected :
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sp:='1'
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else
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sp:='2';
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end;
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newss:=def_stabstr_evaluate(nil,'$1::$2=##$3;:$4;$5A$6;',[GetSymName(tsym(p)),def_stab_number(pd),
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def_stab_number(pd.returndef),argnames,sp,
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virtualind]);
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ss^:=ss^+newss;
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end;
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end;
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procedure TDebugInfoStabs.field_write_defs(p:TObject;arg:pointer);
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begin
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if (Tsym(p).typ=fieldvarsym) and
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not(sp_static in Tsym(p).symoptions) then
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appenddef(TAsmList(arg),tfieldvarsym(p).vardef);
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end;
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|
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|
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procedure TDebugInfoStabs.write_def_stabstr(list:TAsmList;def:tdef;const ss:ansistring);
|
|
var
|
|
stabchar : string[2];
|
|
symname : string[20];
|
|
st : ansistring;
|
|
p : pchar;
|
|
begin
|
|
{ type prefix }
|
|
if def.typ in tagtypes then
|
|
stabchar := 'Tt'
|
|
else
|
|
stabchar := 't';
|
|
{ in case of writing the class record structure, we always have to
|
|
use the class name (so it refers both to the struct and the
|
|
pointer to the struct), otherwise gdb crashes (see tests/webtbs/tw9766.pp) }
|
|
if is_class(def) and
|
|
tobjectdef(def).writing_class_record_dbginfo then
|
|
st:=def_stabstr_evaluate(def,'"${sym_name}:$1$2=',[stabchar,def_stab_classnumber(tobjectdef(def))])
|
|
else
|
|
begin
|
|
{ Type names for types defined in the current unit are already written in
|
|
the typesym }
|
|
if (def.owner.symtabletype=globalsymtable) and
|
|
not(def.owner.iscurrentunit) then
|
|
symname:='${sym_name}'
|
|
else
|
|
symname:='';
|
|
st:=def_stabstr_evaluate(def,'"'+symname+':$1$2=',[stabchar,def_stab_number(def)]);
|
|
end;
|
|
st:=st+ss;
|
|
{ line info is set to 0 for all defs, because the def can be in another
|
|
unit and then the linenumber is invalid in the current sourcefile }
|
|
st:=st+def_stabstr_evaluate(def,'",${N_LSYM},0,0,0',[]);
|
|
{ add to list }
|
|
getmem(p,length(st)+1);
|
|
move(pchar(st)^,p^,length(st)+1);
|
|
list.concat(Tai_stab.create(stab_stabs,p));
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_string(list:TAsmList;def:tstringdef);
|
|
var
|
|
bytest,charst,longst : string;
|
|
ss : ansistring;
|
|
slen : longint;
|
|
begin
|
|
ss:='';
|
|
case def.stringtype of
|
|
st_shortstring:
|
|
begin
|
|
{ fix length of openshortstring }
|
|
slen:=def.len;
|
|
if slen=0 then
|
|
slen:=255;
|
|
charst:=def_stab_number(cchartype);
|
|
bytest:=def_stab_number(u8inttype);
|
|
ss:=def_stabstr_evaluate(def,'s$1length:$2,0,8;st:ar$2;1;$3;$4,8,$5;;',
|
|
[tostr(slen+1),bytest,tostr(slen),charst,tostr(slen*8)]);
|
|
end;
|
|
st_longstring:
|
|
begin
|
|
charst:=def_stab_number(cchartype);
|
|
bytest:=def_stab_number(u8inttype);
|
|
longst:=def_stab_number(u32inttype);
|
|
ss:=def_stabstr_evaluate(def,'s$1length:$2,0,32;dummy:$6,32,8;st:ar$2;1;$3;$4,40,$5;;',
|
|
[tostr(def.len+5),longst,tostr(def.len),charst,tostr(def.len*8),bytest]);
|
|
end;
|
|
st_ansistring:
|
|
begin
|
|
{ looks like a pchar }
|
|
ss:='*'+def_stab_number(cchartype);
|
|
end;
|
|
st_unicodestring,
|
|
st_widestring:
|
|
begin
|
|
{ looks like a pwidechar }
|
|
ss:='*'+def_stab_number(cwidechartype);
|
|
end;
|
|
end;
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
function TDebugInfoStabs.get_enum_defstr(def: tenumdef; lowerbound: longint): ansistring;
|
|
var
|
|
i: longint;
|
|
p: tenumsym;
|
|
begin
|
|
{ we can specify the size with @s<size>; prefix PM }
|
|
if def.size <> std_param_align then
|
|
result:='@s'+tostr(def.size*8)+';e'
|
|
else
|
|
result:='e';
|
|
{ the if-test is required because pred(def.minval) might overflow;
|
|
the longint() typecast should be safe because stabs is not
|
|
supported for 64 bit targets }
|
|
if (def.minval<>lowerbound) then
|
|
for i:=lowerbound to pred(longint(def.minval)) do
|
|
result:=result+'<invalid>:'+tostr(i)+',';
|
|
|
|
for i := 0 to def.symtable.SymList.Count - 1 do
|
|
begin
|
|
p := tenumsym(def.symtable.SymList[i]);
|
|
if p.value<def.minval then
|
|
continue
|
|
else
|
|
if p.value>def.maxval then
|
|
break;
|
|
result:=result+GetSymName(p)+':'+tostr(p.value)+',';
|
|
end;
|
|
{ the final ',' is required to have a valid stabs }
|
|
result:=result+';';
|
|
end;
|
|
|
|
procedure TDebugInfoStabs.appenddef_enum(list:TAsmList;def:tenumdef);
|
|
begin
|
|
write_def_stabstr(list,def,get_enum_defstr(def,def.minval));
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_ord(list:TAsmList;def:torddef);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
ss:='';
|
|
if cs_gdb_valgrind in current_settings.globalswitches then
|
|
begin
|
|
case def.ordtype of
|
|
uvoid :
|
|
ss:=def_stab_number(def);
|
|
pasbool8,
|
|
pasbool16,
|
|
pasbool32,
|
|
pasbool64,
|
|
bool8bit,
|
|
bool16bit,
|
|
bool32bit,
|
|
bool64bit :
|
|
ss:=def_stabstr_evaluate(def,'r${numberstring};0;255;',[]);
|
|
u32bit,
|
|
s64bit,
|
|
u64bit :
|
|
ss:=def_stabstr_evaluate(def,'r${numberstring};0;-1;',[]);
|
|
else
|
|
ss:=def_stabstr_evaluate(def,'r${numberstring};$1;$2;',[tostr(longint(def.low.svalue)),tostr(longint(def.high.svalue))]);
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
case def.ordtype of
|
|
uvoid :
|
|
ss:=def_stab_number(def);
|
|
uchar :
|
|
ss:='-20;';
|
|
uwidechar :
|
|
ss:='-30;';
|
|
pasbool8,
|
|
bool8bit :
|
|
ss:='-21;';
|
|
pasbool16,
|
|
bool16bit :
|
|
ss:='-22;';
|
|
pasbool32,
|
|
bool32bit :
|
|
ss:='-23;';
|
|
pasbool64,
|
|
bool64bit :
|
|
{ no clue if this is correct (FK) }
|
|
ss:='-23;';
|
|
u64bit :
|
|
ss:='-32;';
|
|
s64bit :
|
|
ss:='-31;';
|
|
{u32bit : result:=def_stab_number(s32inttype)+';0;-1;'); }
|
|
else
|
|
ss:=def_stabstr_evaluate(def,'r${numberstring};$1;$2;',[tostr(longint(def.low.svalue)),tostr(longint(def.high.svalue))]);
|
|
end;
|
|
end;
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_float(list:TAsmList;def:tfloatdef);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
ss:='';
|
|
case def.floattype of
|
|
s32real,
|
|
s64real,
|
|
s80real,
|
|
sc80real:
|
|
ss:=def_stabstr_evaluate(def,'r$1;${savesize};0;',[def_stab_number(s32inttype)]);
|
|
s64currency,
|
|
s64comp:
|
|
ss:=def_stabstr_evaluate(def,'r$1;-${savesize};0;',[def_stab_number(s32inttype)]);
|
|
else
|
|
internalerror(200509261);
|
|
end;
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_file(list:TAsmList;def:tfiledef);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
{$ifdef cpu64bitaddr}
|
|
ss:=def_stabstr_evaluate(def,'s${savesize}HANDLE:$1,0,32;MODE:$1,32,32;RECSIZE:$2,64,64;'+
|
|
'_PRIVATE:ar$1;1;64;$3,128,256;USERDATA:ar$1;1;16;$3,384,128;'+
|
|
'NAME:ar$1;0;255;$4,512,2048;;',[def_stab_number(s32inttype),
|
|
def_stab_number(s64inttype),
|
|
def_stab_number(u8inttype),
|
|
def_stab_number(cchartype)]);
|
|
{$else cpu64bitaddr}
|
|
ss:=def_stabstr_evaluate(def,'s${savesize}HANDLE:$1,0,32;MODE:$1,32,32;RECSIZE:$1,64,32;'+
|
|
'_PRIVATE:ar$1;1;32;$3,96,256;USERDATA:ar$1;1;16;$2,352,128;'+
|
|
'NAME:ar$1;0;255;$3,480,2048;;',[def_stab_number(s32inttype),
|
|
def_stab_number(u8inttype),
|
|
def_stab_number(cchartype)]);
|
|
{$endif cpu64bitaddr}
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_record(list:TAsmList;def:trecorddef);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
ss:='s'+tostr(def.size);
|
|
def.symtable.SymList.ForEachCall(@field_add_stabstr,@ss);
|
|
ss[length(ss)]:=';';
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_object(list:TAsmList;def:tobjectdef);
|
|
|
|
procedure do_write_object(list:TAsmList;def:tobjectdef);
|
|
var
|
|
ss : ansistring;
|
|
anc : tobjectdef;
|
|
begin
|
|
ss:='';
|
|
{ Write the invisible pointer for the class? }
|
|
if (def.objecttype=odt_class) and
|
|
(not def.writing_class_record_dbginfo) then
|
|
begin
|
|
ss:='*'+def_stab_classnumber(def);
|
|
write_def_stabstr(list,def,ss);
|
|
exit;
|
|
end;
|
|
|
|
ss:='s'+tostr(tobjecTSymtable(def.symtable).datasize);
|
|
if assigned(def.childof) then
|
|
begin
|
|
{only one ancestor not virtual, public, at base offset 0 }
|
|
{ !1 , 0 2 0 , }
|
|
ss:=ss+'!1,020,'+def_stab_classnumber(def.childof)+';';
|
|
end;
|
|
|
|
{virtual table to implement yet}
|
|
def.symtable.symList.ForEachCall(@field_add_stabstr,@ss);
|
|
|
|
if (oo_has_vmt in def.objectoptions) and
|
|
(
|
|
not assigned(def.childof) or
|
|
not(oo_has_vmt in def.childof.objectoptions)
|
|
) then
|
|
ss:=ss+'$vf'+def_stab_classnumber(def)+':'+def_stab_number(vmtarraytype)+','+tostr(def.vmt_offset*8)+';';
|
|
def.symtable.symList.ForEachCall(@method_add_stabstr,@ss);
|
|
if (oo_has_vmt in def.objectoptions) then
|
|
begin
|
|
anc := def;
|
|
while assigned(anc.childof) and (oo_has_vmt in anc.childof.objectoptions) do
|
|
anc := anc.childof;
|
|
{ just in case anc = self }
|
|
ss:=ss+';~%'+def_stab_classnumber(anc)+';';
|
|
end
|
|
else
|
|
ss:=ss+';';
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
var
|
|
oldtypesym : tsym;
|
|
begin
|
|
{ classes require special code to write the record and the invisible pointer }
|
|
if is_class(def) then
|
|
begin
|
|
{ Write the record class itself }
|
|
tobjectdef(def).writing_class_record_dbginfo:=true;
|
|
do_write_object(list,def);
|
|
tobjectdef(def).writing_class_record_dbginfo:=false;
|
|
{ Write the invisible pointer class }
|
|
oldtypesym:=def.typesym;
|
|
def.typesym:=nil;
|
|
do_write_object(list,def);
|
|
def.typesym:=oldtypesym;
|
|
end
|
|
else
|
|
do_write_object(list,def);
|
|
{ VMT symbol }
|
|
if (oo_has_vmt in def.objectoptions) and
|
|
assigned(def.owner) and
|
|
assigned(def.owner.name) then
|
|
list.concat(Tai_stab.create(stab_stabs,strpnew('"vmt_'+GetSymTableName(def.owner)+tobjectdef(def).objname^+':S'+
|
|
def_stab_number(vmttype)+'",'+tostr(N_STSYM)+',0,0,'+tobjectdef(def).vmt_mangledname)));
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_variant(list:TAsmList;def:tvariantdef);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
if not assigned(vardatadef) then
|
|
exit;
|
|
|
|
ss:='s'+tostr(vardatadef.size);
|
|
vardatadef.symtable.SymList.ForEachCall(@field_add_stabstr,@ss);
|
|
ss[length(ss)]:=';';
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_pointer(list:TAsmList;def:tpointerdef);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
ss:='*'+def_stab_number(tpointerdef(def).pointeddef);
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_set(list:TAsmList;def:tsetdef);
|
|
var
|
|
st,
|
|
ss : ansistring;
|
|
p: pchar;
|
|
elementdefstabnr: string;
|
|
begin
|
|
{ ugly hack: create a temporary subrange type if the lower bound of
|
|
the set's element type is not a multiple of 8 (because we store them
|
|
as if the lower bound is a multiple of 8) }
|
|
if (def.setbase<>get_min_value(def.elementdef)) then
|
|
begin
|
|
{ allocate a def number }
|
|
inc(global_stab_number);
|
|
elementdefstabnr:=tostr(global_stab_number);
|
|
{ anonymous subrange def }
|
|
st:='":t'+elementdefstabnr+'=';
|
|
if (def.elementdef.typ = enumdef) then
|
|
st:=st+get_enum_defstr(tenumdef(def.elementdef),def.setbase)
|
|
else
|
|
st:=st+def_stabstr_evaluate(def.elementdef,'r'+elementdefstabnr+';$1;$2;',[tostr(longint(def.setbase)),tostr(longint(get_max_value(def.elementdef).svalue))]);
|
|
st:=st+'",'+tostr(N_LSYM)+',0,0,0';
|
|
{ add to list }
|
|
getmem(p,length(st)+1);
|
|
move(pchar(st)^,p^,length(st)+1);
|
|
list.concat(Tai_stab.create(stab_stabs,p));
|
|
end
|
|
else
|
|
elementdefstabnr:=def_stab_number(def.elementdef);
|
|
ss:=def_stabstr_evaluate(def,'@s$1;S$2',[tostr(def.size*8),elementdefstabnr]);
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_formal(list:TAsmList;def:tformaldef);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
ss:=def_stabstr_evaluate(def,'${numberstring};',[]);
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_array(list:TAsmList;def:tarraydef);
|
|
var
|
|
tempstr: shortstring;
|
|
ss : ansistring;
|
|
begin
|
|
if not is_packed_array(def) then
|
|
begin
|
|
tempstr:='ar$1;$2;$3;$4';
|
|
if is_dynamic_array(def) then
|
|
tempstr:='*'+tempstr;
|
|
ss:=def_stabstr_evaluate(def,tempstr,[def_stab_number(tarraydef(def).rangedef),
|
|
tostr(tarraydef(def).lowrange),tostr(tarraydef(def).highrange),def_stab_number(tarraydef(def).elementdef)])
|
|
end
|
|
else
|
|
begin
|
|
// the @P seems to be ignored by gdb
|
|
tempstr:=def_stabstr_evaluate(tarraydef(def).rangedef,'r${numberstring};$1;$2;',
|
|
[tostr(tarraydef(def).lowrange),tostr(tarraydef(def).highrange)]);
|
|
// will only show highrange-lowrange+1 bits in gdb
|
|
ss:=def_stabstr_evaluate(def,'@s$1;@S;S$2',
|
|
[tostr(TConstExprInt(tarraydef(def).elepackedbitsize) * tarraydef(def).elecount),tempstr]);
|
|
end;
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_procvar(list:TAsmList;def:tprocvardef);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
ss:='*f'+def_stab_number(tprocvardef(def).returndef);
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appenddef_undefined(list:TAsmList;def:tundefineddef);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
ss:=def_stabstr_evaluate(def,'${numberstring};',[]);
|
|
write_def_stabstr(list,def,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.beforeappenddef(list:TAsmList;def:tdef);
|
|
var
|
|
anc : tobjectdef;
|
|
i : longint;
|
|
begin
|
|
{ write dependencies first }
|
|
case def.typ of
|
|
stringdef :
|
|
begin
|
|
if tstringdef(def).stringtype in [st_widestring,st_unicodestring] then
|
|
appenddef(list,cwidechartype)
|
|
else
|
|
begin
|
|
appenddef(list,cchartype);
|
|
appenddef(list,u8inttype);
|
|
end;
|
|
end;
|
|
floatdef :
|
|
appenddef(list,s32inttype);
|
|
filedef :
|
|
begin
|
|
appenddef(list,s32inttype);
|
|
{$ifdef cpu64bitaddr}
|
|
appenddef(list,s64inttype);
|
|
{$endif cpu64bitaddr}
|
|
appenddef(list,u8inttype);
|
|
appenddef(list,cchartype);
|
|
end;
|
|
classrefdef :
|
|
appenddef(list,pvmttype);
|
|
pointerdef :
|
|
appenddef(list,tpointerdef(def).pointeddef);
|
|
setdef :
|
|
appenddef(list,tsetdef(def).elementdef);
|
|
procvardef :
|
|
begin
|
|
appenddef(list,tprocvardef(def).returndef);
|
|
if assigned(tprocvardef(def).parast) then
|
|
write_symtable_defs(list,tprocvardef(def).parast);
|
|
end;
|
|
procdef :
|
|
begin
|
|
appenddef(list,tprocdef(def).returndef);
|
|
if assigned(tprocdef(def).parast) then
|
|
write_symtable_defs(list,tprocdef(def).parast);
|
|
if assigned(tprocdef(def).localst) and
|
|
(tprocdef(def).localst.symtabletype=localsymtable) then
|
|
write_symtable_defs(list,tprocdef(def).localst);
|
|
end;
|
|
arraydef :
|
|
begin
|
|
appenddef(list,tarraydef(def).rangedef);
|
|
appenddef(list,tarraydef(def).elementdef);
|
|
end;
|
|
recorddef :
|
|
trecorddef(def).symtable.symList.ForEachCall(@field_write_defs,list);
|
|
enumdef :
|
|
if assigned(tenumdef(def).basedef) then
|
|
appenddef(list,tenumdef(def).basedef);
|
|
objectdef :
|
|
begin
|
|
{ make sure we don't write child classdefs before their parent }
|
|
{ classdefs, because this crashes gdb }
|
|
anc:=tobjectdef(def);
|
|
while assigned(anc.childof) do
|
|
begin
|
|
anc:=anc.childof;
|
|
if (anc.dbg_state=dbg_state_writing) then
|
|
{ happens in case a field of a parent is of the (forward }
|
|
{ defined) child type }
|
|
begin
|
|
{ We don't explicitly requeue it, but the fact that }
|
|
{ a child type was used in a parent before the child }
|
|
{ type was fully defined means that it was forward }
|
|
{ declared, and will still be encountered later (it }
|
|
{ cannot have been declared in another unit, because }
|
|
{ then this and that other unit would depend on }
|
|
{ eachother's interface) }
|
|
{ Setting the state to queued however allows us to }
|
|
{ get the def number already without an IE }
|
|
def.dbg_state:=dbg_state_queued;
|
|
exit;
|
|
end;
|
|
end;
|
|
appenddef(list,vmtarraytype);
|
|
if assigned(tobjectdef(def).ImplementedInterfaces) then
|
|
for i:=0 to tobjectdef(def).ImplementedInterfaces.Count-1 do
|
|
appenddef(list,TImplementedInterface(tobjectdef(def).ImplementedInterfaces[i]).IntfDef);
|
|
{ first the parents }
|
|
anc:=tobjectdef(def);
|
|
while assigned(anc.childof) do
|
|
begin
|
|
anc:=anc.childof;
|
|
appenddef(list,anc);
|
|
if assigned(anc.ImplementedInterfaces) then
|
|
for i:=0 to anc.ImplementedInterfaces.Count-1 do
|
|
appenddef(list,TImplementedInterface(anc.ImplementedInterfaces[i]).IntfDef);
|
|
end;
|
|
tobjectdef(def).symtable.symList.ForEachCall(@field_write_defs,list);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appendprocdef(list:TAsmList;def:tprocdef);
|
|
var
|
|
templist : TAsmList;
|
|
stabsendlabel : tasmlabel;
|
|
p : pchar;
|
|
RType : Char;
|
|
Obj,Info : String;
|
|
hs : string;
|
|
ss : ansistring;
|
|
begin
|
|
if not(def.in_currentunit) or
|
|
{ happens for init procdef of units without init section }
|
|
not assigned(def.procstarttai) then
|
|
exit;
|
|
|
|
{ mark as used so the local type defs also be written }
|
|
def.dbg_state:=dbg_state_used;
|
|
|
|
templist:=TAsmList.create;
|
|
|
|
{ end of procedure }
|
|
current_asmdata.getlabel(stabsendlabel,alt_dbgtype);
|
|
|
|
if assigned(def.funcretsym) and
|
|
(tabstractnormalvarsym(def.funcretsym).refs>0) then
|
|
begin
|
|
if tabstractnormalvarsym(def.funcretsym).localloc.loc=LOC_REFERENCE then
|
|
begin
|
|
{ TODO: Need to add gdb support for ret in param register calling}
|
|
if paramanager.ret_in_param(def.returndef,def.proccalloption) then
|
|
hs:='X*'
|
|
else
|
|
hs:='X';
|
|
templist.concat(Tai_stab.create(stab_stabs,strpnew(
|
|
'"'+GetSymName(def.procsym)+':'+hs+def_stab_number(def.returndef)+'",'+
|
|
tostr(N_tsym)+',0,0,'+tostr(tabstractnormalvarsym(def.funcretsym).localloc.reference.offset))));
|
|
if (m_result in current_settings.modeswitches) then
|
|
templist.concat(Tai_stab.create(stab_stabs,strpnew(
|
|
'"RESULT:'+hs+def_stab_number(def.returndef)+'",'+
|
|
tostr(N_tsym)+',0,0,'+tostr(tabstractnormalvarsym(def.funcretsym).localloc.reference.offset))));
|
|
end;
|
|
end;
|
|
// LBRAC
|
|
ss:=tostr(N_LBRAC)+',0,0,';
|
|
if target_info.cpu=cpu_powerpc64 then
|
|
ss:=ss+'.';
|
|
ss:=ss+def.mangledname;
|
|
if not(af_stabs_use_function_absolute_addresses in target_asm.flags) then
|
|
begin
|
|
ss:=ss+'-';
|
|
if target_info.cpu=cpu_powerpc64 then
|
|
ss:=ss+'.';
|
|
ss:=ss+def.mangledname;
|
|
end;
|
|
getmem(p,length(ss)+1);
|
|
move(pchar(ss)^,p^,length(ss)+1);
|
|
templist.concat(Tai_stab.Create(stab_stabn,p));
|
|
// RBRAC
|
|
ss:=tostr(N_RBRAC)+',0,0,'+stabsendlabel.name;
|
|
if not(af_stabs_use_function_absolute_addresses in target_asm.flags) then
|
|
begin
|
|
ss:=ss+'-';
|
|
if target_info.cpu=cpu_powerpc64 then
|
|
ss:=ss+'.';
|
|
ss:=ss+def.mangledname;
|
|
end;
|
|
getmem(p,length(ss)+1);
|
|
move(pchar(ss)^,p^,length(ss)+1);
|
|
templist.concat(Tai_stab.Create(stab_stabn,p));
|
|
|
|
{ the stabsendlabel must come after all other stabs for this }
|
|
{ function }
|
|
templist.concat(tai_label.create(stabsendlabel));
|
|
|
|
{ Add a "size" stab as described in the last paragraph of 2.5 at }
|
|
{ http://sourceware.org/gdb/current/onlinedocs/stabs_2.html#SEC12 }
|
|
{ This works at least on Darwin (and is needed on Darwin to get }
|
|
{ correct smartlinking of stabs), but I don't know which binutils }
|
|
{ version is required on other platforms }
|
|
{ This stab must come after all other stabs for the procedure, }
|
|
{ including the LBRAC/RBRAC ones }
|
|
if (target_info.system in systems_darwin) then
|
|
templist.concat(Tai_stab.create(stab_stabs,
|
|
strpnew('"",'+tostr(N_FUNCTION)+',0,0,'+stabsendlabel.name+'-'+def.mangledname)));
|
|
|
|
current_asmdata.asmlists[al_procedures].insertlistafter(def.procendtai,templist);
|
|
|
|
{ "The stab representing a procedure is located immediately
|
|
following the code of the procedure. This stab is in turn
|
|
directly followed by a group of other stabs describing
|
|
elements of the procedure. These other stabs describe the
|
|
procedure's parameters, its block local variables, and its
|
|
block structure." (stab docs) }
|
|
{ this is however incorrect in case "include source" statements }
|
|
{ appear in the block, in that case the procedure stab must }
|
|
{ appear before this include stabs (and we generate such an }
|
|
{ stabs for all functions) (JM) }
|
|
|
|
{ FUNC stabs }
|
|
obj := GetSymName(def.procsym);
|
|
info := '';
|
|
if (po_global in def.procoptions) then
|
|
RType := 'F'
|
|
else
|
|
RType := 'f';
|
|
if assigned(def.owner) then
|
|
begin
|
|
if (def.owner.symtabletype in [ObjectSymtable,recordsymtable]) then
|
|
obj := GetSymTableName(def.owner)+'__'+GetSymName(def.procsym);
|
|
if not(cs_gdb_valgrind in current_settings.globalswitches) and
|
|
(def.owner.symtabletype=localsymtable) and
|
|
assigned(def.owner.defowner) and
|
|
assigned(tprocdef(def.owner.defowner).procsym) then
|
|
info := ','+GetSymName(def.procsym)+','+GetSymName(tprocdef(def.owner.defowner).procsym);
|
|
end;
|
|
ss:='"'+ansistring(obj)+':'+RType+def_stab_number(def.returndef)+info+'",'+tostr(n_function)+',0,'+tostr(def.fileinfo.line)+','+ansistring(def.mangledname);
|
|
getmem(p,length(ss)+1);
|
|
move(pchar(ss)^,p^,length(ss)+1);
|
|
templist.concat(Tai_stab.Create(stab_stabs,p));
|
|
|
|
current_asmdata.asmlists[al_procedures].insertlistbefore(def.procstarttai,templist);
|
|
|
|
{ para types }
|
|
if assigned(def.parast) then
|
|
write_symtable_syms(templist,def.parast);
|
|
{ local type defs and vars should not be written
|
|
inside the main proc stab }
|
|
if assigned(def.localst) and
|
|
(def.localst.symtabletype=localsymtable) then
|
|
write_symtable_syms(templist,def.localst);
|
|
|
|
current_asmdata.asmlists[al_procedures].insertlistbefore(def.procstarttai,templist);
|
|
|
|
templist.free;
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
TSym support
|
|
****************************************************************************}
|
|
|
|
function TDebugInfoStabs.sym_var_value(const s:string;arg:pointer):string;
|
|
var
|
|
sym : tsym absolute arg;
|
|
begin
|
|
result:='';
|
|
if s='name' then
|
|
result:=GetSymName(sym)
|
|
else if s='mangledname' then
|
|
result:=sym.mangledname
|
|
else if s='ownername' then
|
|
result:=GetSymTableName(sym.owner)
|
|
else if s='line' then
|
|
result:=tostr(sym.fileinfo.line)
|
|
else if s='N_LSYM' then
|
|
result:=tostr(N_LSYM)
|
|
else if s='N_LCSYM' then
|
|
result:=tostr(N_LCSYM)
|
|
else if s='N_RSYM' then
|
|
result:=tostr(N_RSYM)
|
|
else if s='N_TSYM' then
|
|
result:=tostr(N_TSYM)
|
|
else if s='N_STSYM' then
|
|
result:=tostr(N_STSYM)
|
|
else if s='N_FUNCTION' then
|
|
result:=tostr(N_FUNCTION)
|
|
else
|
|
internalerror(200401152);
|
|
end;
|
|
|
|
|
|
function TDebugInfoStabs.sym_stabstr_evaluate(sym:tsym;const s:string;const vars:array of string):ansistring;
|
|
begin
|
|
result:=string_evaluate(s,@sym_var_value,sym,vars);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.write_sym_stabstr(list:TAsmList;sym:tsym;const ss:ansistring);
|
|
var
|
|
p : pchar;
|
|
begin
|
|
if ss='' then
|
|
exit;
|
|
{ add to list }
|
|
getmem(p,length(ss)+1);
|
|
move(pchar(ss)^,p^,length(ss)+1);
|
|
list.concat(Tai_stab.create(stab_stabs,p));
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appendsym_fieldvar(list:TAsmList;sym:tfieldvarsym);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
ss:='';
|
|
if (sym.owner.symtabletype in [ObjectSymtable,recordsymtable]) and
|
|
(sp_static in sym.symoptions) then
|
|
ss:=sym_stabstr_evaluate(sym,'"${ownername}__${name}:S$1",${N_LCSYM},0,${line},${mangledname}',
|
|
[def_stab_number(sym.vardef)]);
|
|
write_sym_stabstr(list,sym,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appendsym_staticvar(list:TAsmList;sym:tstaticvarsym);
|
|
var
|
|
ss : ansistring;
|
|
st : string;
|
|
threadvaroffset : string;
|
|
regidx : Tregisterindex;
|
|
nsym : string[7];
|
|
begin
|
|
{ external symbols can't be resolved at link time, so we
|
|
can't generate stabs for them }
|
|
if vo_is_external in sym.varoptions then
|
|
exit;
|
|
ss:='';
|
|
st:=def_stab_number(sym.vardef);
|
|
case sym.localloc.loc of
|
|
LOC_REGISTER,
|
|
LOC_CREGISTER,
|
|
LOC_MMREGISTER,
|
|
LOC_CMMREGISTER,
|
|
LOC_FPUREGISTER,
|
|
LOC_CFPUREGISTER :
|
|
begin
|
|
regidx:=findreg_by_number(sym.localloc.register);
|
|
{ "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi", "eip", "ps", "cs", "ss", "ds", "es", "fs", "gs", }
|
|
{ this is the register order for GDB}
|
|
if regidx<>0 then
|
|
ss:=sym_stabstr_evaluate(sym,'"${name}:r$1",${N_RSYM},0,${line},$2',[st,tostr(regstabs_table[regidx])]);
|
|
end;
|
|
else
|
|
begin
|
|
if (vo_is_thread_var in sym.varoptions) then
|
|
threadvaroffset:='+'+tostr(sizeof(pint))
|
|
else
|
|
threadvaroffset:='';
|
|
if (vo_is_typed_const in sym.varoptions) then
|
|
nsym:='N_STSYM'
|
|
else
|
|
nsym:='N_LCSYM';
|
|
{ Here we used S instead of
|
|
because with G GDB doesn't look at the address field
|
|
but searches the same name or with a leading underscore
|
|
but these names don't exist in pascal !}
|
|
st:='S'+st;
|
|
ss:=sym_stabstr_evaluate(sym,'"${name}:$1",${'+nsym+'},0,${line},${mangledname}$2',[st,threadvaroffset]);
|
|
end;
|
|
end;
|
|
write_sym_stabstr(list,sym,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appendsym_localvar(list:TAsmList;sym:tlocalvarsym);
|
|
var
|
|
ss : ansistring;
|
|
st : string;
|
|
regidx : Tregisterindex;
|
|
begin
|
|
{ There is no space allocated for not referenced locals }
|
|
if (sym.owner.symtabletype=localsymtable) and (sym.refs=0) then
|
|
exit;
|
|
|
|
ss:='';
|
|
st:=def_stab_number(sym.vardef);
|
|
case sym.localloc.loc of
|
|
LOC_REGISTER,
|
|
LOC_CREGISTER,
|
|
LOC_MMREGISTER,
|
|
LOC_CMMREGISTER,
|
|
LOC_FPUREGISTER,
|
|
LOC_CFPUREGISTER :
|
|
begin
|
|
regidx:=findreg_by_number(sym.localloc.register);
|
|
{ "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi", "eip", "ps", "cs", "ss", "ds", "es", "fs", "gs", }
|
|
{ this is the register order for GDB}
|
|
if regidx<>0 then
|
|
ss:=sym_stabstr_evaluate(sym,'"${name}:r$1",${N_RSYM},0,${line},$2',[st,tostr(regstabs_table[regidx])]);
|
|
end;
|
|
LOC_REFERENCE :
|
|
{ offset to ebp => will not work if the framepointer is esp
|
|
so some optimizing will make things harder to debug }
|
|
ss:=sym_stabstr_evaluate(sym,'"${name}:$1",${N_TSYM},0,${line},$2',[st,tostr(sym.localloc.reference.offset)])
|
|
else
|
|
internalerror(2003091814);
|
|
end;
|
|
write_sym_stabstr(list,sym,ss);
|
|
end;
|
|
|
|
|
|
function TDebugInfoStabs.get_appendsym_paravar_reg(sym:tparavarsym;const typ,stabstr:string;reg: tregister): ansistring;
|
|
var
|
|
ltyp: string[1];
|
|
regidx : Tregisterindex;
|
|
begin
|
|
result:='';
|
|
if typ='p' then
|
|
ltyp:='R'
|
|
else
|
|
ltyp:='a';
|
|
regidx:=findreg_by_number(reg);
|
|
{ "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi", "eip", "ps", "cs", "ss", "ds", "es", "fs", "gs", }
|
|
{ this is the register order for GDB}
|
|
if regidx<>0 then
|
|
result:=sym_stabstr_evaluate(sym,'"${name}:$1",${N_RSYM},0,${line},$2',[ltyp+stabstr,tostr(longint(regstabs_table[regidx]))]);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appendsym_paravar(list:TAsmList;sym:tparavarsym);
|
|
var
|
|
ss : ansistring;
|
|
c : string[1];
|
|
st : string;
|
|
regidx : Tregisterindex;
|
|
begin
|
|
ss:='';
|
|
{ set loc to LOC_REFERENCE to get somewhat usable debugging info for -Or }
|
|
{ while stabs aren't adapted for regvars yet }
|
|
if (vo_is_self in sym.varoptions) then
|
|
begin
|
|
case sym.localloc.loc of
|
|
LOC_REGISTER,
|
|
LOC_CREGISTER:
|
|
regidx:=findreg_by_number(sym.localloc.register);
|
|
LOC_REFERENCE: ;
|
|
else
|
|
internalerror(2003091815);
|
|
end;
|
|
if (po_classmethod in tabstractprocdef(sym.owner.defowner).procoptions) or
|
|
(po_staticmethod in tabstractprocdef(sym.owner.defowner).procoptions) then
|
|
begin
|
|
if (sym.localloc.loc=LOC_REFERENCE) then
|
|
ss:=sym_stabstr_evaluate(sym,'"pvmt:p$1",${N_TSYM},0,0,$2',
|
|
[def_stab_number(pvmttype),tostr(sym.localloc.reference.offset)])
|
|
else
|
|
begin
|
|
regidx:=findreg_by_number(sym.localloc.register);
|
|
ss:=sym_stabstr_evaluate(sym,'"pvmt:r$1",${N_RSYM},0,0,$2',
|
|
[def_stab_number(pvmttype),tostr(regstabs_table[regidx])]);
|
|
end
|
|
end
|
|
else
|
|
begin
|
|
if not(is_class(tprocdef(sym.owner.defowner).struct)) then
|
|
c:='v'
|
|
else
|
|
c:='p';
|
|
if (sym.localloc.loc=LOC_REFERENCE) then
|
|
ss:=sym_stabstr_evaluate(sym,'"$$t:$1",${N_TSYM},0,0,$2',
|
|
[c+def_stab_number(tprocdef(sym.owner.defowner).struct),tostr(sym.localloc.reference.offset)])
|
|
else
|
|
begin
|
|
if (c='p') then
|
|
c:='R'
|
|
else
|
|
c:='a';
|
|
regidx:=findreg_by_number(sym.localloc.register);
|
|
ss:=sym_stabstr_evaluate(sym,'"$$t:$1",${N_RSYM},0,0,$2',
|
|
[c+def_stab_number(tprocdef(sym.owner.defowner).struct),tostr(regstabs_table[regidx])]);
|
|
end
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
st:=def_stab_number(sym.vardef);
|
|
|
|
if paramanager.push_addr_param(sym.varspez,sym.vardef,tprocdef(sym.owner.defowner).proccalloption) and
|
|
not(vo_has_local_copy in sym.varoptions) and
|
|
not is_open_string(sym.vardef) then
|
|
c:='v' { should be 'i' but 'i' doesn't work }
|
|
else
|
|
c:='p';
|
|
case sym.localloc.loc of
|
|
LOC_REGISTER,
|
|
LOC_CREGISTER,
|
|
LOC_MMREGISTER,
|
|
LOC_CMMREGISTER,
|
|
LOC_FPUREGISTER,
|
|
LOC_CFPUREGISTER :
|
|
begin
|
|
ss:=get_appendsym_paravar_reg(sym,c,st,sym.localloc.register);
|
|
end;
|
|
LOC_REFERENCE :
|
|
begin
|
|
{ When the *value* of a parameter (so not its address!) is
|
|
copied into a local variable, you have to generate two
|
|
stabs: one for the parmeter, and one for the local copy.
|
|
Not doing this breaks debugging under e.g. SPARC. Doc:
|
|
http://sourceware.org/gdb/current/onlinedocs/stabs_4.html#SEC26
|
|
}
|
|
if (c='p') and
|
|
not is_open_string(sym.vardef) and
|
|
((sym.paraloc[calleeside].location^.loc<>sym.localloc.loc) or
|
|
((sym.localloc.loc in [LOC_REFERENCE,LOC_CREFERENCE]) and
|
|
((sym.paraloc[calleeside].location^.reference.index<>sym.localloc.reference.base) or
|
|
(sym.paraloc[calleeside].location^.reference.offset<>sym.localloc.reference.offset))) or
|
|
((sym.localloc.loc in [LOC_REGISTER,LOC_CREGISTER,LOC_MMREGISTER,LOC_CMMREGISTER,LOC_FPUREGISTER,LOC_CFPUREGISTER]) and
|
|
(sym.localloc.register<>sym.paraloc[calleeside].location^.register))) then
|
|
begin
|
|
if not(sym.paraloc[calleeside].location^.loc in [LOC_REFERENCE,LOC_CREFERENCE]) then
|
|
ss:=get_appendsym_paravar_reg(sym,c,st,sym.paraloc[calleeside].location^.register)
|
|
else
|
|
ss:=sym_stabstr_evaluate(sym,'"${name}:$1",${N_TSYM},0,${line},$2',[c+st,tostr(sym.paraloc[calleeside].location^.reference.offset)]);
|
|
write_sym_stabstr(list,sym,ss);
|
|
{ second stab has no parameter specifier }
|
|
c:='';
|
|
end;
|
|
{ offset to ebp => will not work if the framepointer is esp
|
|
so some optimizing will make things harder to debug }
|
|
ss:=sym_stabstr_evaluate(sym,'"${name}:$1",${N_TSYM},0,${line},$2',[c+st,tostr(sym.localloc.reference.offset)])
|
|
end;
|
|
else
|
|
internalerror(2003091814);
|
|
end;
|
|
end;
|
|
write_sym_stabstr(list,sym,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appendsym_const(list:TAsmList;sym:tconstsym);
|
|
var
|
|
st : string;
|
|
ss : ansistring;
|
|
begin
|
|
ss:='';
|
|
{ Don't write info for default parameter values, the N_Func breaks
|
|
the N_Func for the function itself.
|
|
Valgrind does not support constants }
|
|
if (sym.owner.symtabletype=parasymtable) or
|
|
(cs_gdb_valgrind in current_settings.globalswitches) then
|
|
exit;
|
|
case sym.consttyp of
|
|
conststring:
|
|
begin
|
|
if sym.value.len<200 then
|
|
st:='s'''+backspace_quote(octal_quote(strpas(pchar(sym.value.valueptr)),[#0..#9,#11,#12,#14..#31,'''']),['"','\',#10,#13])+''''
|
|
else
|
|
st:='<constant string too long>';
|
|
end;
|
|
constord:
|
|
st:='i'+tostr(sym.value.valueord);
|
|
constpointer:
|
|
st:='i'+tostr(sym.value.valueordptr);
|
|
constreal:
|
|
begin
|
|
system.str(pbestreal(sym.value.valueptr)^,st);
|
|
st := 'r'+st;
|
|
end;
|
|
else
|
|
begin
|
|
{ if we don't know just put zero !! }
|
|
st:='i0';
|
|
end;
|
|
end;
|
|
ss:=sym_stabstr_evaluate(sym,'"${name}:c=$1;",${N_FUNCTION},0,${line},0',[st]);
|
|
write_sym_stabstr(list,sym,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appendsym_type(list:TAsmList;sym:ttypesym);
|
|
var
|
|
ss : ansistring;
|
|
stabchar : string[2];
|
|
begin
|
|
ss:='';
|
|
if not assigned(sym.typedef) then
|
|
internalerror(200509262);
|
|
if sym.typedef.typ in tagtypes then
|
|
stabchar:='Tt'
|
|
else
|
|
stabchar:='t';
|
|
ss:=sym_stabstr_evaluate(sym,'"${name}:$1$2",${N_LSYM},0,${line},0',[stabchar,def_stab_number(sym.typedef)]);
|
|
write_sym_stabstr(list,sym,ss);
|
|
end;
|
|
|
|
|
|
procedure TDebugInfoStabs.appendsym_label(list:TAsmList;sym:tlabelsym);
|
|
var
|
|
ss : ansistring;
|
|
begin
|
|
ss:=sym_stabstr_evaluate(sym,'"${name}",${N_LSYM},0,${line},0',[]);
|
|
write_sym_stabstr(list,sym,ss);
|
|
end;
|
|
|
|
|
|
{****************************************************************************
|
|
Proc/Module support
|
|
****************************************************************************}
|
|
|
|
procedure tdebuginfostabs.inserttypeinfo;
|
|
var
|
|
stabsvarlist,
|
|
stabstypelist : TAsmList;
|
|
storefilepos : tfileposinfo;
|
|
i : longint;
|
|
vardatatype : ttypesym;
|
|
begin
|
|
storefilepos:=current_filepos;
|
|
current_filepos:=current_module.mainfilepos;
|
|
|
|
global_stab_number:=0;
|
|
defnumberlist:=TFPObjectlist.create(false);
|
|
deftowritelist:=TFPObjectlist.create(false);
|
|
stabsvarlist:=TAsmList.create;
|
|
stabstypelist:=TAsmList.create;
|
|
|
|
vardatatype:=try_search_system_type('TVARDATA');
|
|
if assigned(vardatatype) then
|
|
vardatadef:=trecorddef(vardatatype.typedef);
|
|
|
|
{ include symbol that will be referenced from the main to be sure to
|
|
include this debuginfo .o file }
|
|
current_module.flags:=current_module.flags or uf_has_stabs_debuginfo;
|
|
if not(target_info.system in systems_darwin) then
|
|
begin
|
|
new_section(current_asmdata.asmlists[al_stabs],sec_data,GetSymTableName(current_module.localsymtable),0);
|
|
current_asmdata.asmlists[al_stabs].concat(tai_symbol.Createname_global(make_mangledname('DEBUGINFO',current_module.localsymtable,''),AT_DATA,0));
|
|
end
|
|
else
|
|
new_section(current_asmdata.asmlists[al_stabs],sec_code,GetSymTableName(current_module.localsymtable),0);
|
|
|
|
{ write all global/local variables. This will flag all required tdefs }
|
|
if assigned(current_module.globalsymtable) then
|
|
write_symtable_syms(stabsvarlist,current_module.globalsymtable);
|
|
if assigned(current_module.localsymtable) then
|
|
write_symtable_syms(stabsvarlist,current_module.localsymtable);
|
|
|
|
{ write all procedures and methods. This will flag all required tdefs }
|
|
if assigned(current_module.globalsymtable) then
|
|
write_symtable_procdefs(stabsvarlist,current_module.globalsymtable);
|
|
if assigned(current_module.localsymtable) then
|
|
write_symtable_procdefs(stabsvarlist,current_module.localsymtable);
|
|
|
|
{ reset unit type info flag }
|
|
reset_unit_type_info;
|
|
|
|
{ write used types from the used units }
|
|
write_used_unit_type_info(stabstypelist,current_module);
|
|
{ last write the types from this unit }
|
|
if assigned(current_module.globalsymtable) then
|
|
write_symtable_defs(stabstypelist,current_module.globalsymtable);
|
|
if assigned(current_module.localsymtable) then
|
|
write_symtable_defs(stabstypelist,current_module.localsymtable);
|
|
|
|
write_remaining_defs_to_write(stabstypelist);
|
|
|
|
current_asmdata.asmlists[al_stabs].concatlist(stabstypelist);
|
|
current_asmdata.asmlists[al_stabs].concatlist(stabsvarlist);
|
|
|
|
{ reset stab numbers }
|
|
for i:=0 to defnumberlist.count-1 do
|
|
begin
|
|
if assigned(defnumberlist[i]) then
|
|
begin
|
|
tdef(defnumberlist[i]).stab_number:=0;
|
|
tdef(defnumberlist[i]).dbg_state:=dbg_state_unused;
|
|
end;
|
|
end;
|
|
|
|
defnumberlist.free;
|
|
defnumberlist:=nil;
|
|
deftowritelist.free;
|
|
deftowritelist:=nil;
|
|
|
|
stabsvarlist.free;
|
|
stabstypelist.free;
|
|
current_filepos:=storefilepos;
|
|
end;
|
|
|
|
|
|
procedure tdebuginfostabs.insertlineinfo(list:TAsmList);
|
|
var
|
|
currfileinfo,
|
|
lastfileinfo : tfileposinfo;
|
|
currfuncname : pshortstring;
|
|
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) or
|
|
(lastfileinfo.moduleindex<>currfileinfo.moduleindex)) then
|
|
begin
|
|
infile:=get_module(currfileinfo.moduleindex).sourcefiles.get_file(currfileinfo.fileindex);
|
|
if assigned(infile) then
|
|
begin
|
|
current_asmdata.getlabel(hlabel,alt_dbgfile);
|
|
{ emit stabs }
|
|
if not(ds_stabs_abs_include_files in current_settings.debugswitches) or
|
|
path_absolute(infile.path^) then
|
|
list.insertbefore(Tai_stab.Create_str(stab_stabs,'"'+BsToSlash(FixPath(infile.path^,false))+FixFileName(infile.name^)+'",'+tostr(n_includefile)+
|
|
',0,0,'+hlabel.name),hp)
|
|
else
|
|
list.insertbefore(Tai_stab.Create_str(stab_stabs,'"'+BsToSlash(FixPath(getcurrentdir,false)+FixPath(infile.path^,false))+FixFileName(infile.name^)+'",'+tostr(n_includefile)+
|
|
',0,0,'+hlabel.name),hp);
|
|
list.insertbefore(tai_label.create(hlabel),hp);
|
|
{ force new line info }
|
|
lastfileinfo.line:=-1;
|
|
end;
|
|
end;
|
|
|
|
{ line changed ? }
|
|
if (currfileinfo.line>lastfileinfo.line) and (currfileinfo.line<>0) then
|
|
begin
|
|
if assigned(currfuncname) and
|
|
not(af_stabs_use_function_absolute_addresses in target_asm.flags) then
|
|
begin
|
|
current_asmdata.getlabel(hlabel,alt_dbgline);
|
|
list.insertbefore(Tai_stab.Create_str(stab_stabn,tostr(n_textline)+',0,'+tostr(currfileinfo.line)+','+
|
|
hlabel.name+' - '+{$IFDEF POWERPC64}'.'+{$ENDIF POWERPC64}currfuncname^),hp);
|
|
list.insertbefore(tai_label.create(hlabel),hp);
|
|
end
|
|
else
|
|
list.insertbefore(Tai_stab.Create_str(stab_stabd,tostr(n_textline)+',0,'+tostr(currfileinfo.line)),hp);
|
|
end;
|
|
lastfileinfo:=currfileinfo;
|
|
end;
|
|
|
|
hp:=tai(hp.next);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tdebuginfostabs.insertmoduleinfo;
|
|
var
|
|
hlabel : tasmlabel;
|
|
infile : tinputfile;
|
|
begin
|
|
{ emit main source n_sourcefile for start of module }
|
|
current_asmdata.getlabel(hlabel,alt_dbgfile);
|
|
infile:=current_module.sourcefiles.get_file(1);
|
|
new_section(current_asmdata.asmlists[al_start],sec_code,make_mangledname('DEBUGSTART',current_module.localsymtable,''),0,secorder_begin);
|
|
if not(target_info.system in systems_darwin) then
|
|
current_asmdata.asmlists[al_start].concat(tai_symbol.Createname_global(make_mangledname('DEBUGSTART',current_module.localsymtable,''),AT_DATA,0));
|
|
current_asmdata.asmlists[al_start].concat(Tai_stab.Create_str(stab_stabs,'"'+BsToSlash(FixPath(getcurrentdir,false))+'",'+tostr(n_sourcefile)+
|
|
',0,0,'+hlabel.name));
|
|
current_asmdata.asmlists[al_start].concat(Tai_stab.Create_str(stab_stabs,'"'+BsToSlash(FixPath(infile.path^,false))+FixFileName(infile.name^)+'",'+tostr(n_sourcefile)+
|
|
',0,0,'+hlabel.name));
|
|
current_asmdata.asmlists[al_start].concat(tai_label.create(hlabel));
|
|
{ for darwin, you need a "module marker" too to work around }
|
|
{ either some assembler or gdb bug (radar 4386531 according to a }
|
|
{ comment in dbxout.c of Apple's gcc) }
|
|
if (target_info.system in systems_darwin) then
|
|
current_asmdata.asmlists[al_end].concat(Tai_stab.Create_str(stab_stabs,'"",'+tostr(N_OSO)+',0,0,0'));
|
|
{ emit empty n_sourcefile for end of module }
|
|
current_asmdata.getlabel(hlabel,alt_dbgfile);
|
|
new_section(current_asmdata.asmlists[al_end],sec_code,make_mangledname('DEBUGEND',current_module.localsymtable,''),0,secorder_end);
|
|
if not(target_info.system in systems_darwin) then
|
|
current_asmdata.asmlists[al_end].concat(tai_symbol.Createname_global(make_mangledname('DEBUGEND',current_module.localsymtable,''),AT_DATA,0));
|
|
current_asmdata.asmlists[al_end].concat(Tai_stab.Create_str(stab_stabs,'"",'+tostr(n_sourcefile)+',0,0,'+hlabel.name));
|
|
current_asmdata.asmlists[al_end].concat(tai_label.create(hlabel));
|
|
end;
|
|
|
|
|
|
procedure tdebuginfostabs.referencesections(list:TAsmList);
|
|
var
|
|
hp : tmodule;
|
|
dbgtable : tai_symbol;
|
|
begin
|
|
{ Reference all DEBUGINFO sections from the main .fpc section }
|
|
if (target_info.system in ([system_powerpc_macos]+systems_darwin)) then
|
|
exit;
|
|
new_section(list,sec_fpc,'links',0);
|
|
{ make sure the debuginfo doesn't get stripped out }
|
|
if (target_info.system in systems_darwin) then
|
|
begin
|
|
dbgtable:=tai_symbol.createname('DEBUGINFOTABLE',AT_DATA,0);
|
|
list.concat(tai_directive.create(asd_no_dead_strip,dbgtable.sym.name));
|
|
list.concat(dbgtable);
|
|
end;
|
|
{ include reference to all debuginfo sections of used units }
|
|
hp:=tmodule(loaded_units.first);
|
|
while assigned(hp) do
|
|
begin
|
|
If (hp.flags and uf_has_stabs_debuginfo)=uf_has_stabs_debuginfo then
|
|
begin
|
|
list.concat(Tai_const.Createname(make_mangledname('DEBUGINFO',hp.localsymtable,''),0));
|
|
list.concat(Tai_const.Createname(make_mangledname('DEBUGSTART',hp.localsymtable,''),0));
|
|
list.concat(Tai_const.Createname(make_mangledname('DEBUGEND',hp.localsymtable,''),0));
|
|
end;
|
|
hp:=tmodule(hp.next);
|
|
end;
|
|
end;
|
|
|
|
constructor TDebugInfoStabs.Create;
|
|
begin
|
|
inherited Create;
|
|
vardatadef:=nil;
|
|
end;
|
|
|
|
const
|
|
dbg_stabs_info : tdbginfo =
|
|
(
|
|
id : dbg_stabs;
|
|
idtxt : 'STABS';
|
|
);
|
|
|
|
initialization
|
|
RegisterDebugInfo(dbg_stabs_info,TDebugInfoStabs);
|
|
end.
|