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{
Copyright (c) 2008 by Peter Vreman, Florian Klaempfl and Jonas Maebe
This units contains support for generating LLVM type info
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.
****************************************************************************
}
{
This units contains support for LLVM type info generation.
It's based on the debug info system, since it's quite similar
}
unit llvmdef;
{$i fpcdefs.inc}
{$h+}
interface
uses
cclasses,globtype,
aasmbase,aasmtai,aasmdata,
symbase,symtype,symdef,symsym,
finput,
dbgbase;
{ TLLVMDefInfo }
type
TLLVMDefInfo = class(TDebugInfo)
function def_llvm_name(def:tdef) : tasmsymbol;
function def_llvm_pointer_name(def: tdef): tasmsymbol;
function def_llvm_class_struct_name(def:tobjectdef) : tasmsymbol;
function def_llvm_vmt_name(def:tobjectdef) : tasmsymbol;
protected
vardatadef: trecorddef;
procedure record_def(def:tdef);
procedure beforeappenddef(list:TAsmList;def:tdef);override;
procedure afterappenddef(list:TAsmList;def:tdef);override;
procedure appenddef_ord(list:TAsmList;def:torddef);override;
procedure appenddef_float(list:TAsmList;def:tfloatdef);override;
procedure appenddef_enum(list:TAsmList;def:tenumdef);override;
procedure appenddef_array(list:TAsmList;def:tarraydef);override;
procedure appenddef_abstractrecord(list:TAsmList;def:tabstractrecorddef);
procedure appenddef_record(list:TAsmList;def:trecorddef);override;
procedure appenddef_pointer(list:TAsmList;def:tpointerdef);override;
procedure appenddef_string(list:TAsmList;def:tstringdef);override;
procedure appenddef_procvar(list:TAsmList;def:tprocvardef);override;
procedure appendprocdef(list:TAsmList;def:tprocdef);override;
procedure appendprocdef_implicit(list:TAsmList;def:tprocdef);override;
procedure appenddef_formal(list:TAsmList;def: tformaldef);override;
procedure appenddef_object(list:TAsmList;def: tobjectdef);override;
procedure appenddef_set(list:TAsmList;def: tsetdef);override;
procedure appenddef_undefined(list:TAsmList;def: tundefineddef);override;
procedure appenddef_variant(list:TAsmList;def: tvariantdef);override;
procedure appendsym_var(list:TAsmList;sym:tabstractnormalvarsym);
procedure beforeappendsym(list:TAsmList;sym:tsym);override;
procedure appendsym_staticvar(list:TAsmList;sym:tstaticvarsym);override;
procedure appendsym_paravar(list:TAsmList;sym:tparavarsym);override;
procedure appendsym_localvar(list:TAsmList;sym:tlocalvarsym);override;
procedure appendsym_fieldvar(list:TAsmList;sym:tfieldvarsym);override;
procedure appendsym_const(list:TAsmList;sym:tconstsym);override;
procedure appendsym_type(list:TAsmList;sym:ttypesym);override;
procedure appendsym_label(list:TAsmList;sym:tlabelsym);override;
procedure appendsym_absolute(list:TAsmList;sym:tabsolutevarsym);override;
procedure appendsym_property(list:TAsmList;sym:tpropertysym);override;
function getabstractprocdefstr(def:tabstractprocdef): ansistring;
function symname(sym:tsym): String;
procedure enum_membersyms_callback(p:TObject;arg:pointer);
public
constructor Create;override;
destructor Destroy;override;
procedure insertmoduleinfo;override;
procedure inserttypeinfo;override;
end;
implementation
uses
sysutils,cutils,cfileutl,constexp,
version,globals,verbose,systems,
cpubase,cgbase,paramgr,
fmodule,nobj,
defutil,symconst,symtable,
llvmbase, aasmllvm;
{****************************************************************************
TDebugInfoDwarf
****************************************************************************}
procedure TLLVMDefInfo.record_def(def:tdef);
begin
if (def.dbg_state <> dbg_state_unused) then
exit;
{ the name syms are set automatically when requested }
def.dbg_state:=dbg_state_used;
deftowritelist.Add(def);
defnumberlist.Add(def);
end;
function TLLVMDefInfo.def_llvm_name(def: tdef): tasmsymbol;
begin
record_def(def);
result:=def.llvm_name_sym;
end;
function TLLVMDefInfo.def_llvm_pointer_name(def: tdef): tasmsymbol;
begin
record_def(def);
result:=def.llvm_pointername_sym;
end;
function TLLVMDefInfo.def_llvm_class_struct_name(def: tobjectdef): tasmsymbol;
begin
record_def(def);
result:=def.llvm_class_struct_name_sym;
end;
function TLLVMDefInfo.def_llvm_vmt_name(def:tobjectdef) : tasmsymbol;
begin
record_def(def);
result:=def.llvm_vmt_name_sym;
end;
constructor TLLVMDefInfo.Create;
begin
inherited Create;
end;
destructor TLLVMDefInfo.Destroy;
begin
inherited destroy;
end;
procedure TLLVMDefInfo.enum_membersyms_callback(p:TObject; arg: pointer);
begin
case tsym(p).typ of
fieldvarsym:
appendsym_fieldvar(TAsmList(arg),tfieldvarsym(p));
end;
end;
procedure TLLVMDefInfo.appenddef_ord(list:TAsmList;def:torddef);
begin
case def.ordtype of
s8bit,
s16bit,
s32bit,
s64bit,
u8bit,
u16bit,
u32bit,
u64bit,
uchar,
uwidechar,
pasbool,
bool8bit,
bool16bit,
bool32bit,
bool64bit,
scurrency:
begin
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'i'+tostr(def.size*8)));
end;
uvoid :
begin
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'void'));
end
else
internalerror(2008032901);
end;
end;
procedure TLLVMDefInfo.appenddef_float(list:TAsmList;def:tfloatdef);
begin
case def.floattype of
s32real:
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'float'));
s64real:
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'double'));
sc80real,
s80real:
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'x86_fp80'));
s64currency,
s64comp:
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'i64'));
else
internalerror(200601289);
end;
end;
procedure TLLVMDefInfo.appenddef_enum(list:TAsmList;def:tenumdef);
begin
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'i'+tostr(def.size*8)));
end;
procedure TLLVMDefInfo.appenddef_array(list:TAsmList;def:tarraydef);
var
typename: ansistring;
endstr: ansistring;
indexrange: aint;
{$ifndef llvm_has_packed_arrays}
begin
if is_packed_array(def) then
begin
{ have to use an array of byte of the appropriate size, }
{ since llvm doesn't support packed arrays yet natively }
typename:=def_llvm_name(s8inttype).name;
indexrange:=def.size;
end
else
begin
typename:=def_llvm_name(def.elementdef).name;
if not is_open_array(def) and
not is_dynamic_array(def) then
indexrange:=def.highrange-def.lowrange+1
else
indexrange:=0;
end;
if not is_dynamic_array(def) then
endstr:=']'
else
endstr:=']*';
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'['+tostr(indexrange)+' x '+typename+endstr))
{$else not llvm_has_packed_arrays}
var
arrstart, arrend, typename: ansistring;
begin
typename:='';
if not is_packed_array(def) then
begin
{ regular array: '[' nritems 'x' type ']' }
arrstart:='[';
arrend:=']'
end
else
begin
{ packed array: '<' nritems 'x' type '>' }
arrstart:='< [';
arrend:='] >';
if is_ordinal(def.elementdef) then
typename:='i'+tostr(def.elepackedbitsize);
end;
if (typename='') then
typename:=def_llvm_name(def.elementdef).name
if is_open_array(def) then
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),arrstart+'0 x '+typename+arrend))
else if is_dynamic_array(def) then
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'[0 x '+typename+']'+'*'))
else
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),arrstart+tostr(def.highrange-def.lowrange+1)+' x '+typename+arrend))
{$endif not llvm_has_packed_arrays}
end;
procedure TLLVMDefInfo.appenddef_abstractrecord(list:TAsmList;def:tabstractrecorddef);
var
defstr, endstr: ansistring;
symdeflist: tfpobjectlist;
i: longint;
begin
if (tabstractrecordsymtable(def.symtable).usefieldalignment<>C_alignment) then
begin
{ we handle the alignment/padding ourselves }
defstr:='< ';
endstr:=' >'
end
else
begin
{ let llvm do everything }
defstr:= '{ ';
endstr:= ' }'
end;
if not assigned(tabstractrecordsymtable(def.symtable).llvmst) then
tabstractrecordsymtable(def.symtable).llvmst:=tllvmshadowsymtable.create(tabstractrecordsymtable(def.symtable));
symdeflist:=tabstractrecordsymtable(def.symtable).llvmst.symdeflist;
if symdeflist.count>0 then
begin
i:=0;
if (def.typ=objectdef) and
assigned(tobjectdef(def).childof) and
is_class_or_interface_or_dispinterface(tllvmshadowsymtableentry(symdeflist[0]).def) then
begin
writeln(def.typename,' in ',def.owner.name^);
{ insert the struct for the class rather than a pointer to the struct }
if (tllvmshadowsymtableentry(symdeflist[0]).def.typ<>objectdef) then
internalerror(2008070601);
defstr:=defstr+def_llvm_class_struct_name(tobjectdef(tllvmshadowsymtableentry(symdeflist[0]).def)).name+', ';
inc(i);
end;
while i<symdeflist.count do
begin
defstr:=defstr+def_llvm_name(tllvmshadowsymtableentry(symdeflist[i]).def).name+', ';
inc(i);
end;
{ remove last ', ' }
setlength(defstr,length(defstr)-2);
end;
defstr:=defstr+endstr;
if (def.typ<>objectdef) or
not(tobjectdef(def).objecttype in [odt_interfacecom,odt_interfacecorba,odt_dispinterface,odt_class,odt_objcclass,odt_objccategory]) then
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),defstr))
else
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_class_struct_name(tobjectdef(def)),defstr))
end;
procedure TLLVMDefInfo.appenddef_record(list:TAsmList;def:trecorddef);
begin
appenddef_abstractrecord(list,def);
end;
procedure TLLVMDefInfo.appenddef_pointer(list:TAsmList;def:tpointerdef);
begin
{ to avoid cluttering the source with pointer types, }
{ pointer type names directly are "pointeddef.name+'*'". }
{ So only register the pointeddef so it gets printed }
record_def(def.pointeddef);
end;
procedure TLLVMDefInfo.appenddef_string(list:TAsmList;def:tstringdef);
procedure addnormalstringdef(lendef: tdef);
var
defstr: ansistring;
begin
{ record with length and array [maxlen x i8 ] }
{ (also ok for openstrings, as [0 x i8] means }
{ "array of unspecified size" in llvm) }
defstr:='< '+def_llvm_name(lendef).name+', ['+tostr(def.len)+' x i8] >';
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),defstr));
end;
begin
case def.stringtype of
st_shortstring:
begin
addnormalstringdef(u8inttype);
end;
st_longstring:
begin
{$ifdef cpu64bitaddr}
addnormalstringdef(u64inttype);
{$else cpu64bitaddr}
addnormalstringdef(u32inttype);
{$endif cpu64bitaddr}
end;
st_ansistring:
begin
{ looks like a pchar }
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'i8*'));
end;
st_unicodestring,
st_widestring:
begin
{ looks like a pwidechar }
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'i16*'));
end;
end;
end;
procedure TLLVMDefInfo.appenddef_procvar(list:TAsmList;def:tprocvardef);
begin
if def.is_addressonly then
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),getabstractprocdefstr(def)+'*'))
else
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'{ '+getabstractprocdefstr(def)+'*, i8* }'))
end;
procedure TLLVMDefInfo.beforeappenddef(list:TAsmList;def:tdef);
var
labsym : tasmsymbol;
begin
list.concat(tai_comment.Create(strpnew('LLVM definition '+def.typename)));
end;
procedure TLLVMDefInfo.afterappenddef(list:TAsmList;def:tdef);
begin
end;
function TLLVMDefInfo.getabstractprocdefstr(def:tabstractprocdef): ansistring;
var
i : longint;
begin
{ function result-by-reference is handled as a parameter }
if (def.proctypeoption in [potype_constructor,potype_destructor]) or
not paramanager.ret_in_param(def.returndef,def.proccalloption) then
result:=def_llvm_name(def.returndef).name
else
result:='void';
result:=result+' ( ';
for i:=0 to def.paras.count-1 do
with tparavarsym(def.paras[i]) do
begin
result:=result+def_llvm_name(vardef).name;
if paramanager.push_addr_param(varspez,vardef,def.proccalloption) then
begin
result:=result+'*';
if (vo_is_funcret in varoptions) then
result:=result+' sret';
end
else
begin
{ 'byval' means that the parameter is copied onto the stack at the }
{ right location at the caller side rather than that the calling }
{ conventions are used to determine whether the address or value }
{ of the parameter is passed }
{ I don't think we need this for something right now }
// result:=result+' byval'
end;
result:=result+', '
end;
result[length(result)-1]:=')';
end;
procedure TLLVMDefInfo.appendprocdef_implicit(list:TAsmList;def:tprocdef);
begin
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),getabstractprocdefstr(def)));
end;
procedure TLLVMDefInfo.appendprocdef(list:TAsmList;def:tprocdef);
var
defstr : ansistring;
i : longint;
begin
{ the procdef itself is already written by appendprocdef_implicit }
{ last write the types from this procdef }
if assigned(def.parast) then
write_symtable_defs(current_asmdata.asmlists[al_dwarf_info],def.parast);
if assigned(def.localst) and
(def.localst.symtabletype=localsymtable) then
write_symtable_defs(current_asmdata.asmlists[al_dwarf_info],def.localst);
end;
procedure TLLVMDefInfo.appendsym_var(list:TAsmList;sym:tabstractnormalvarsym);
var
templist : TAsmList;
blocksize : longint;
dreg : byte;
begin
{ external symbols can't be resolved at link time, so we
can't generate stabs for them
not sure if this applies to dwarf as well (FK)
}
if vo_is_external in sym.varoptions then
exit;
def_llvm_name(sym.vardef);
{ There is no space allocated for not referenced locals }
if (sym.owner.symtabletype=localsymtable) and (sym.refs=0) then
exit;
(*
templist:=TAsmList.create;
case sym.localloc.loc of
LOC_REGISTER,
LOC_CREGISTER,
LOC_MMREGISTER,
LOC_CMMREGISTER,
LOC_FPUREGISTER,
LOC_CFPUREGISTER :
begin
templist.concat(tai_const.create_8bit(ord(DW_OP_regx)));
dreg:=dwarf_reg(sym.localloc.register);
templist.concat(tai_const.create_uleb128bit(dreg));
blocksize:=1+Lengthuleb128(dreg);
end;
else
begin
case sym.typ of
staticvarsym:
begin
if (vo_is_thread_var in sym.varoptions) then
begin
{$warning !!! FIXME: dwarf for thread vars !!!
}
blocksize:=0;
end
else
begin
templist.concat(tai_const.create_8bit(3));
templist.concat(tai_const.createname(sym.mangledname,0));
blocksize:=1+sizeof(puint);
end;
end;
paravarsym,
localvarsym:
begin
dreg:=dwarf_reg(sym.localloc.reference.base);
templist.concat(tai_const.create_8bit(ord(DW_OP_breg0)+dreg));
templist.concat(tai_const.create_sleb128bit(sym.localloc.reference.offset));
blocksize:=1+Lengthsleb128(sym.localloc.reference.offset);
end
else
internalerror(200601288);
end;
end;
end;
if sym.typ=paravarsym then
tag:=DW_TAG_formal_parameter
else
tag:=DW_TAG_variable;
if not(sym.localloc.loc in [LOC_REGISTER,LOC_CREGISTER,LOC_MMREGISTER,
LOC_CMMREGISTER,LOC_FPUREGISTER,LOC_CFPUREGISTER]) and
((sym.owner.symtabletype = globalsymtable) or
(sp_static in sym.symoptions) or
(vo_is_public in sym.varoptions)) then
append_entry(tag,false,[
DW_AT_name,DW_FORM_string,symname(sym)+#0,
{
DW_AT_decl_file,DW_FORM_data1,0,
DW_AT_decl_line,DW_FORM_data1,
}
DW_AT_external,DW_FORM_flag,true,
{ data continues below }
DW_AT_location,DW_FORM_block1,blocksize
])
{$ifdef gdb_supports_DW_AT_variable_parameter}
else if (sym.typ=paravarsym) and
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
append_entry(tag,false,[
DW_AT_name,DW_FORM_string,symname(sym)+#0,
DW_AT_variable_parameter,DW_FORM_flag,true,
{
DW_AT_decl_file,DW_FORM_data1,0,
DW_AT_decl_line,DW_FORM_data1,
}
{ data continues below }
DW_AT_location,DW_FORM_block1,blocksize
])
{$endif gdb_supports_DW_AT_variable_parameter}
else
append_entry(tag,false,[
DW_AT_name,DW_FORM_string,symname(sym)+#0,
{
DW_AT_decl_file,DW_FORM_data1,0,
DW_AT_decl_line,DW_FORM_data1,
}
{ data continues below }
DW_AT_location,DW_FORM_block1,blocksize
]);
{ append block data }
current_asmdata.asmlists[al_dwarf_info].concatlist(templist);
{$ifndef gdb_supports_DW_AT_variable_parameter}
if (sym.typ=paravarsym) and
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
append_labelentry_ref(DW_AT_type,def_dwarf_ref_lab(sym.vardef))
else
{$endif not gdb_supports_DW_AT_variable_parameter}
append_labelentry_ref(DW_AT_type,def_dwarf_lab(sym.vardef));
templist.free;
finish_entry;
*)
end;
procedure TLLVMDefInfo.appendsym_staticvar(list:TAsmList;sym:tstaticvarsym);
begin
appendsym_var(list,sym);
end;
procedure TLLVMDefInfo.appendsym_localvar(list:TAsmList;sym:tlocalvarsym);
begin
appendsym_var(list,sym);
end;
procedure TLLVMDefInfo.appendsym_paravar(list:TAsmList;sym:tparavarsym);
begin
appendsym_var(list,sym);
end;
procedure TLLVMDefInfo.appendsym_fieldvar(list:TAsmList;sym: tfieldvarsym);
var
bitoffset,
fieldoffset,
fieldnatsize: aint;
begin
// list.concat(taillvm.op_ressym_string(LA_TYPE),'fieldvasym');
(*
if sp_static in sym.symoptions then
exit;
if (tabstractrecordsymtable(sym.owner).usefieldalignment<>bit_alignment) or
{ only ordinals are bitpacked }
not is_ordinal(sym.vardef) then
begin
{ other kinds of fields can however also appear in a bitpacked }
{ record, and then their offset is also specified in bits rather }
{ than in bytes }
if (tabstractrecordsymtable(sym.owner).usefieldalignment<>bit_alignment) then
fieldoffset:=sym.fieldoffset
else
fieldoffset:=sym.fieldoffset div 8;
append_entry(DW_TAG_member,false,[
DW_AT_name,DW_FORM_string,symname(sym)+#0,
DW_AT_data_member_location,DW_FORM_block1,1+lengthuleb128(fieldoffset)
]);
end
else
begin
if (sym.vardef.packedbitsize > 255) then
internalerror(2007061201);
{ we don't bitpack according to the ABI, but as close as }
{ possible, i.e., equivalent to gcc's }
{ __attribute__((__packed__)), which is also what gpc }
{ does. }
fieldnatsize:=max(sizeof(pint),sym.vardef.size);
fieldoffset:=(sym.fieldoffset div (fieldnatsize*8)) * fieldnatsize;
bitoffset:=sym.fieldoffset mod (fieldnatsize*8);
if (target_info.endian=endian_little) then
bitoffset:=(fieldnatsize*8)-bitoffset-sym.vardef.packedbitsize;
append_entry(DW_TAG_member,false,[
DW_AT_name,DW_FORM_string,symname(sym)+#0,
{ gcc also generates both a bit and byte size attribute }
{ we don't support ordinals >= 256 bits }
DW_AT_byte_size,DW_FORM_data1,fieldnatsize,
{ nor >= 256 bits (not yet, anyway, see IE above) }
DW_AT_bit_size,DW_FORM_data1,sym.vardef.packedbitsize,
{ data1 and data2 are unsigned, bitoffset can also be negative }
DW_AT_bit_offset,DW_FORM_data4,bitoffset,
DW_AT_data_member_location,DW_FORM_block1,1+lengthuleb128(fieldoffset)
]);
end;
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_8bit(ord(DW_OP_plus_uconst)));
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_uleb128bit(fieldoffset));
append_labelentry_ref(DW_AT_type,def_dwarf_lab(sym.vardef));
finish_entry;
*)
end;
procedure TLLVMDefInfo.appendsym_const(list:TAsmList;sym:tconstsym);
begin
// list.concat(taillvm.op_ressym_string(LA_TYPE),'constsym');
(*
append_entry(DW_TAG_constant,false,[
DW_AT_name,DW_FORM_string,symname(sym)+#0
]);
{ for string constants, constdef isn't set because they have no real type }
if not(sym.consttyp in [conststring,constresourcestring,constwstring]) then
append_labelentry_ref(DW_AT_type,def_dwarf_lab(sym.constdef));
current_asmdata.asmlists[al_dwarf_abbrev].concat(tai_const.create_uleb128bit(ord(DW_AT_const_value)));
case sym.consttyp of
conststring:
begin
current_asmdata.asmlists[al_dwarf_abbrev].concat(tai_const.create_uleb128bit(ord(DW_FORM_string)));
current_asmdata.asmlists[al_dwarf_info].concat(tai_string.create(strpas(pchar(sym.value.valueptr))));
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_8bit(0));
end;
constset,
constwstring,
constguid,
constresourcestring:
begin
{ write dummy for now }
current_asmdata.asmlists[al_dwarf_abbrev].concat(tai_const.create_uleb128bit(ord(DW_FORM_string)));
current_asmdata.asmlists[al_dwarf_info].concat(tai_string.create(''));
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_8bit(0));
end;
constord:
begin
current_asmdata.asmlists[al_dwarf_abbrev].concat(tai_const.create_uleb128bit(ord(DW_FORM_sdata)));
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_sleb128bit(sym.value.valueord.svalue));
end;
constnil:
begin
{$ifdef cpu64bitaddr}
current_asmdata.asmlists[al_dwarf_abbrev].concat(tai_const.create_uleb128bit(ord(DW_FORM_data8)));
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_64bit(0));
{$else cpu64bitaddr}
current_asmdata.asmlists[al_dwarf_abbrev].concat(tai_const.create_uleb128bit(ord(DW_FORM_data4)));
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_32bit(0));
{$endif cpu64bitaddr}
end;
constpointer:
begin
{$ifdef cpu64bitaddr}
current_asmdata.asmlists[al_dwarf_abbrev].concat(tai_const.create_uleb128bit(ord(DW_FORM_data8)));
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_64bit(int64(sym.value.valueordptr)));
{$else cpu64bitaddr}
current_asmdata.asmlists[al_dwarf_abbrev].concat(tai_const.create_uleb128bit(ord(DW_FORM_data4)));
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_32bit(sym.value.valueordptr));
{$endif cpu64bitaddr}
end;
constreal:
begin
current_asmdata.asmlists[al_dwarf_abbrev].concat(tai_const.create_uleb128bit(ord(DW_FORM_block1)));
case tfloatdef(sym.constdef).floattype of
s32real:
begin
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_8bit(4));
current_asmdata.asmlists[al_dwarf_info].concat(tai_real_32bit.create(psingle(sym.value.valueptr)^));
end;
s64comp,
s64currency,
s64real:
begin
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_8bit(8));
current_asmdata.asmlists[al_dwarf_info].concat(tai_real_64bit.create(pdouble(sym.value.valueptr)^));
end;
s80real:
begin
current_asmdata.asmlists[al_dwarf_info].concat(tai_const.create_8bit(10));
current_asmdata.asmlists[al_dwarf_info].concat(tai_real_80bit.create(pextended(sym.value.valueptr)^));
end;
else
internalerror(200601291);
end;
end;
else
internalerror(200601292);
end;
finish_entry;
*)
end;
procedure TLLVMDefInfo.appendsym_label(list:TAsmList;sym: tlabelsym);
begin
{ ignore label syms for now, the problem is that a label sym
can have more than one label associated e.g. in case of
an inline procedure expansion }
end;
procedure TLLVMDefInfo.appendsym_property(list:TAsmList;sym: tpropertysym);
begin
{ ignored for now }
end;
procedure TLLVMDefInfo.appendsym_type(list:TAsmList;sym: ttypesym);
begin
// list.concat(taillvm.op_ressym_string(LA_TYPE,'typesym');
record_def(sym.typedef);
end;
procedure TLLVMDefInfo.appendsym_absolute(list:TAsmList;sym:tabsolutevarsym);
var
templist : TAsmList;
blocksize : longint;
symlist : ppropaccesslistitem;
begin
// list.concat(taillvm.op_ressym_string(LA_TYPE),'absolutesym'));
end;
procedure TLLVMDefInfo.beforeappendsym(list:TAsmList;sym:tsym);
begin
end;
procedure TLLVMDefInfo.insertmoduleinfo;
begin
end;
procedure TLLVMDefInfo.inserttypeinfo;
procedure write_defs_to_write;
var
n : integer;
looplist,
templist: TFPObjectList;
def : tdef;
begin
templist := TFPObjectList.Create(False);
looplist := deftowritelist;
while looplist.count > 0 do
begin
deftowritelist := templist;
for n := 0 to looplist.count - 1 do
begin
def := tdef(looplist[n]);
case def.dbg_state of
dbg_state_written:
continue;
dbg_state_writing:
internalerror(200610052);
dbg_state_unused:
internalerror(200610053);
dbg_state_used:
appenddef(current_asmdata.asmlists[al_dwarf_info],def)
else
internalerror(200610054);
end;
end;
looplist.clear;
templist := looplist;
looplist := deftowritelist;
end;
templist.free;
end;
var
storefilepos : tfileposinfo;
lenstartlabel : tasmlabel;
i : longint;
def: tdef;
begin
storefilepos:=current_filepos;
current_filepos:=current_module.mainfilepos;
defnumberlist:=TFPObjectList.create(false);
deftowritelist:=TFPObjectList.create(false);
{ not exported (FK)
FILEREC
TEXTREC
}
vardatadef:=trecorddef(search_system_type('TVARDATA').typedef);
{ write all global/local variables. This will flag all required tdefs }
if assigned(current_module.globalsymtable) then
write_symtable_syms(current_asmdata.asmlists[al_dwarf_info],current_module.globalsymtable);
if assigned(current_module.localsymtable) then
write_symtable_syms(current_asmdata.asmlists[al_dwarf_info],current_module.localsymtable);
{ write all procedures and methods. This will flag all required tdefs }
if assigned(current_module.globalsymtable) then
write_symtable_procdefs(current_asmdata.asmlists[al_dwarf_info],current_module.globalsymtable);
if assigned(current_module.localsymtable) then
write_symtable_procdefs(current_asmdata.asmlists[al_dwarf_info],current_module.localsymtable);
{ reset unit type info flag }
reset_unit_type_info;
{ write used types from the used units }
write_used_unit_type_info(current_asmdata.asmlists[al_dwarf_info],current_module);
{ last write the types from this unit }
if assigned(current_module.globalsymtable) then
write_symtable_defs(current_asmdata.asmlists[al_dwarf_info],current_module.globalsymtable);
if assigned(current_module.localsymtable) then
write_symtable_defs(current_asmdata.asmlists[al_dwarf_info],current_module.localsymtable);
{ write defs not written yet }
write_defs_to_write;
{ reset all def labels }
for i:=0 to defnumberlist.count-1 do
begin
def := tdef(defnumberlist[i]);
if assigned(def) then
begin
def.dwarf_lab:=nil;
def.dbg_state:=dbg_state_unused;
{$ifdef support_llvm}
def.fllvm_name_sym:=nil;
def.fllvm_pointer_name_sym:=nil;
if def.typ=objectdef then
begin
tobjectdef(def).fllvm_class_struct_name_sym:=nil;
tobjectdef(def).fllvm_vmt_name_sym:=nil;
end;
{$endif support_llvm}
end;
end;
defnumberlist.free;
defnumberlist:=nil;
deftowritelist.free;
deftowritelist:=nil;
current_filepos:=storefilepos;
end;
function TLLVMDefInfo.symname(sym: tsym): String;
begin
if (sym.typ=paravarsym) and
(vo_is_self in tparavarsym(sym).varoptions) then
result:='this'
else
result := sym.Name;
end;
procedure TLLVMDefInfo.appenddef_formal(list:TAsmList;def: tformaldef);
begin
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'undef*'));
end;
procedure TLLVMDefInfo.appenddef_object(list:TAsmList;def: tobjectdef);
procedure doappend;
begin
appenddef_abstractrecord(list,def);
end;
procedure doappend_classvmt;
var
defstr: ansistring;
i: longint;
begin
{ a pointer to the VMT. Structure of the VMT: }
{ InstanceSize : ptrint }
{ -InstanceSize : ptrint }
{ Parent : ^parent }
{ ClassName : pointer }
{ DynamicTable : pointer }
{ MethodTable : pointer }
{ FieldTable : pointer }
{ TypeInfo : pointer }
{ InitTable : pointer }
{ AutoTable : pointer }
{ IntfTable : pointer }
{ MsgStrTable : pointer }
{ Methods : X times procvar }
defstr:=def_llvm_name(ptrsinttype).name+', ';
defstr:='< '+defstr+defstr;
if assigned(def.childof) then
defstr:=defstr+def_llvm_vmt_name(def.childof).name+'*, '
else
defstr:=defstr+'i8*, ';
{ class name (length+string) }
defstr:=defstr+'['+tostr(length(def.objrealname^)+1)+' x i8]*, ';
{ the other fields }
for i:=1 to 8 do
defstr:=defstr+'i8*, ';
for i:= 0 to def.VMTEntries.Count-1 do
defstr:=defstr+def_llvm_pointer_name(pvmtentry(def.VMTEntries[i])^.procdef).name+', ';
setlength(defstr,length(defstr)-2);
defstr:=defstr+' >*';
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_vmt_name(def),defstr));
end;
begin
case def.objecttype of
odt_cppclass,
odt_object:
doappend;
odt_interfacecom,
odt_interfacecorba,
odt_dispinterface,
odt_class,
odt_objcclass,
odt_objcprotocol:
begin
{ implicit pointer }
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),def_llvm_class_struct_name(def).name+'*'));
doappend;
if not (def.objecttype in [odt_objcclass,odt_objcprotocol]) then
doappend_classvmt;
end;
else
internalerror(200602041);
end;
end;
procedure TLLVMDefInfo.appenddef_set(list:TAsmList;def: tsetdef);
begin
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'[ '+tostr(def.size)+ 'x i8 ]'));
end;
procedure TLLVMDefInfo.appenddef_undefined(list:TAsmList;def: tundefineddef);
begin
list.concat(taillvm.op_ressym_string(LA_TYPE,def_llvm_name(def),'undef'));
end;
procedure TLLVMDefInfo.appenddef_variant(list:TAsmList;def: tvariantdef);
begin
appenddef_record(list,trecorddef(vardatadef));
end;
end.
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