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{
Copyright (c) 20011 by Jonas Maebe
LLVM version of some node tree helper routines
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
unit nllvmutil;
{$i fpcdefs.inc}
interface
uses
globtype,cclasses,
aasmbase,aasmdata,aasmllvmmetadata, ngenutil,
symtype,symconst,symsym,symdef;
type
tllvmnodeutils = class(tnodeutils)
strict protected
class procedure insertbsssym(list: tasmlist; sym: tstaticvarsym; size: asizeint; varalign: shortint; _typ:Tasmsymtype); override;
class procedure InsertUsedList(var usedsyms: tfpobjectlist; const usedsymsname: TSymStr);
class procedure InsertInitFiniList(var procdefs: tfplist; const initfinisymsname: TSymStr);
public
class procedure InsertObjectInfo; override;
class procedure RegisterUsedAsmSym(sym: TAsmSymbol; def: tdef; compileronly: boolean); override;
class procedure GenerateObjCImageInfo; override;
class procedure RegisterModuleInitFunction(pd: tprocdef); override;
class procedure RegisterModuleFiniFunction(pd: tprocdef); override;
end;
implementation
uses
verbose,cutils,globals,fmodule,systems,
aasmtai,cpubase,llvmbase,aasmllvm,
aasmcnst,nllvmtcon,
symbase,symtable,defutil,
llvmtype,llvmdef,
objcasm;
class procedure tllvmnodeutils.insertbsssym(list: tasmlist; sym: tstaticvarsym; size: asizeint; varalign: shortint; _typ:Tasmsymtype);
var
asmsym: tasmsymbol;
field1, field2: tsym;
begin
if sym.globalasmsym then
asmsym:=current_asmdata.DefineAsmSymbol(sym.mangledname,AB_GLOBAL,_typ,sym.vardef)
else if tf_supports_hidden_symbols in target_info.flags then
asmsym:=current_asmdata.DefineAsmSymbol(sym.mangledname,AB_PRIVATE_EXTERN,_typ,sym.vardef)
else
asmsym:=current_asmdata.DefineAsmSymbol(sym.mangledname,AB_LOCAL,_typ,sym.vardef);
if not(vo_is_thread_var in sym.varoptions) then
list.concat(taillvmdecl.createdef(asmsym,sym.vardef,nil,sec_data,varalign))
else if tf_section_threadvars in target_info.flags then
list.concat(taillvmdecl.createtls(asmsym,sym.vardef,varalign))
else
list.concat(taillvmdecl.createdef(asmsym,
get_threadvar_record(sym.vardef,field1,field2),
nil,sec_data,varalign));
end;
type
TTypedAsmSym = class
sym: TAsmSymbol;
def: tdef;
constructor Create(s: TAsmSymbol; d: tdef);
end;
constructor TTypedAsmSym.Create(s: TAsmSymbol; d: tdef);
begin
sym:=s;
def:=d;
end;
function TypedAsmSymComparer(p1, p2: Pointer): Integer;
var
sym1: TTypedAsmSym absolute p1;
sym2: TTypedAsmSym absolute p2;
begin
result:=CompareStr(sym1.sym.Name,sym2.sym.Name);
end;
class procedure tllvmnodeutils.InsertUsedList(var usedsyms: tfpobjectlist; const usedsymsname: TSymstr);
var
useddef: tdef;
tcb: ttai_typedconstbuilder;
prevasmsym: TAsmSymbol;
typedsym: TTypedAsmSym;
uniquesyms, i: longint;
begin
if usedsyms.count<>0 then
begin
{ a symbol can appear multiple times -> sort the list so we can filter out doubles }
usedsyms.Sort(@TypedAsmSymComparer);
{ count uniques }
prevasmsym:=nil;
uniquesyms:=0;
for i:=0 to usedsyms.count-1 do
begin
typedsym:=TTypedAsmSym(usedsyms[i]);
if (prevasmsym<>typedsym.sym) and
{ even though we already filter on pure assembler routines when adding the symbols,
some may slip through because of forward definitions that are not yet resolved }
not((typedsym.def.typ=procdef) and
(po_assembler in tprocdef(typedsym.def).procoptions)) then
inc(uniquesyms);
prevasmsym:=typedsym.sym;
end;
{ emit uniques }
prevasmsym:=nil;
tcb:=ctai_typedconstbuilder.create([tcalo_new_section]);
tllvmtai_typedconstbuilder(tcb).appendingdef:=true;
useddef:=carraydef.getreusable(voidpointertype,uniquesyms);
tcb.maybe_begin_aggregate(useddef);
for i:=0 to usedsyms.count-1 do
begin
typedsym:=TTypedAsmSym(usedsyms[i]);
if (prevasmsym<>typedsym.sym) and
not((typedsym.def.typ=procdef) and
(po_assembler in tprocdef(typedsym.def).procoptions)) then
begin
tcb.queue_init(voidpointertype);
tcb.queue_emit_asmsym(typedsym.sym,typedsym.def);
prevasmsym:=typedsym.sym;
end;
end;
tcb.maybe_end_aggregate(useddef);
current_asmdata.AsmLists[al_globals].concatlist(
tcb.get_final_asmlist(
current_asmdata.DefineAsmSymbol(
usedsymsname,AB_GLOBAL,AT_DATA,useddef),useddef,sec_user,
'llvm.metadata',0
)
);
tcb.free;
end;
usedsyms.free;
usedsyms:=nil;
end;
class procedure tllvmnodeutils.InsertInitFiniList(var procdefs: tfplist; const initfinisymsname: TSymStr);
var
itemdef: trecorddef;
arraydef: tarraydef;
pd: tprocdef;
fields: array[0..2] of tdef;
tcb: ttai_typedconstbuilder;
i: longint;
begin
if procdefs.count<>0 then
begin
pd:=tprocdef(procdefs[0]);
fields[0]:=s32inttype;
fields[1]:=cprocvardef.getreusableprocaddr(pd,pc_address_only);
fields[2]:=voidpointertype;
itemdef:=llvmgettemprecorddef(fields,C_alignment,
targetinfos[target_info.system]^.alignment.recordalignmin);
include(itemdef.defoptions,df_llvm_no_struct_packing);
tcb:=ctai_typedconstbuilder.create([tcalo_new_section]);
tllvmtai_typedconstbuilder(tcb).appendingdef:=true;
arraydef:=carraydef.getreusable(itemdef,procdefs.Count);
tcb.maybe_begin_aggregate(arraydef);
for i:=0 to procdefs.count-1 do
begin
tcb.maybe_begin_aggregate(itemdef);
tcb.emit_ord_const(65535,s32inttype);
tcb.emit_procdef_const(tprocdef(procdefs[i]));
tcb.emit_tai(Tai_const.Create_sym(nil),voidpointertype);
tcb.maybe_end_aggregate(itemdef);
end;
tcb.maybe_end_aggregate(arraydef);
current_asmdata.AsmLists[al_globals].concatlist(
tcb.get_final_asmlist(
current_asmdata.DefineAsmSymbol(
initfinisymsname,AB_GLOBAL,AT_DATA,arraydef),arraydef,sec_data,
initfinisymsname,voidpointertype.alignment
)
);
tcb.free;
end;
end;
class procedure tllvmnodeutils.InsertObjectInfo;
begin
inherited;
{ insert newly created defs in the implementation rather than interface symtable
(the interface symtable is sealed at this point) }
symtablestack.push(current_module.localsymtable);
{ add the llvm.compiler.used array }
InsertUsedList(current_module.llvmcompilerusedsyms,'llvm.compiler.used');
{ add the llvm.used array }
InsertUsedList(current_module.llvmusedsyms,'llvm.used');
{ add the llvm.global_ctors array }
InsertInitFiniList(current_module.llvminitprocs,'llvm.global_ctors');
{ add the llvm.global_dtors array }
InsertInitFiniList(current_module.llvmfiniprocs,'llvm.global_dtors');
{ add "type xx = .." statements for all used recorddefs }
with TLLVMTypeInfo.Create do
begin
inserttypeinfo;
free;
end;
symtablestack.pop(current_module.localsymtable);
end;
class procedure tllvmnodeutils.RegisterUsedAsmSym(sym: TAsmSymbol; def: tdef; compileronly: boolean);
var
last: TTypedAsmSym;
begin
if compileronly then
begin
{ filter multiple adds in succession here already }
last:=TTypedAsmSym(current_module.llvmcompilerusedsyms.Last);
if not assigned(last) or
(last.sym<>sym) then
current_module.llvmcompilerusedsyms.Add(TTypedAsmSym.Create(sym,def))
end
else
begin
last:=TTypedAsmSym(current_module.llvmusedsyms.Last);
if not assigned(last) or
(last.sym<>sym) then
current_module.llvmusedsyms.Add(TTypedAsmSym.Create(sym,def))
end;
end;
class procedure tllvmnodeutils.GenerateObjCImageInfo;
var
llvmmoduleflags,
objcmoduleflag: tai_llvmbasemetadatanode;
objcabiversion: longint;
begin
llvmmoduleflags:=tai_llvmnamedmetadatanode.create('llvm.module.flags');
current_asmdata.AsmLists[al_rotypedconsts].Concat(llvmmoduleflags);
{ Objective-C ABI version }
if not(target_info.system in [system_powerpc_darwin,system_powerpc64_darwin,system_i386_darwin,system_x86_64_darwin]) or
(CompareVersionStrings(MacOSXVersionMin,'10.5')>=0) then
objcabiversion:=2
else
objcabiversion:=1;
objcmoduleflag:=tai_llvmunnamedmetadatanode.create;
objcmoduleflag.addvalue(tai_simpletypedconst.create(s32inttype,tai_const.Create_32bit(1)));
objcmoduleflag.addvalue(tai_simpletypedconst.create(charpointertype,tai_string.Create('Objective-C Version')));
objcmoduleflag.addvalue(tai_simpletypedconst.create(s32inttype,tai_const.Create_32bit(objcabiversion)));
llvmmoduleflags.addvalue(llvm_getmetadatareftypedconst(objcmoduleflag));
current_asmdata.AsmLists[al_rotypedconsts].Concat(objcmoduleflag);
{ image info version }
objcmoduleflag:=tai_llvmunnamedmetadatanode.create;
objcmoduleflag.addvalue(tai_simpletypedconst.create(s32inttype,tai_const.Create_32bit(1)));
objcmoduleflag.addvalue(tai_simpletypedconst.create(charpointertype,tai_string.Create('Objective-C Image Info Version')));
objcmoduleflag.addvalue(tai_simpletypedconst.create(s32inttype,tai_const.Create_32bit(0)));
llvmmoduleflags.addvalue(llvm_getmetadatareftypedconst(objcmoduleflag));
current_asmdata.AsmLists[al_rotypedconsts].Concat(objcmoduleflag);
{ image info section }
objcmoduleflag:=tai_llvmunnamedmetadatanode.create;
objcmoduleflag.addvalue(tai_simpletypedconst.create(s32inttype,tai_const.Create_32bit(1)));
objcmoduleflag.addvalue(tai_simpletypedconst.create(charpointertype,tai_string.Create('Objective-C Image Info Section')));
objcmoduleflag.addvalue(tai_simpletypedconst.create(charpointertype,tai_string.Create(objc_section_name(sec_objc_image_info))));
llvmmoduleflags.addvalue(llvm_getmetadatareftypedconst(objcmoduleflag));
current_asmdata.AsmLists[al_rotypedconsts].Concat(objcmoduleflag);
{ garbage collection }
objcmoduleflag:=tai_llvmunnamedmetadatanode.create;
objcmoduleflag.addvalue(tai_simpletypedconst.create(s32inttype,tai_const.Create_32bit(1)));
objcmoduleflag.addvalue(tai_simpletypedconst.create(charpointertype,tai_string.Create('Objective-C Garbage Collection')));
objcmoduleflag.addvalue(tai_simpletypedconst.create(s32inttype,tai_const.Create_32bit(0)));
llvmmoduleflags.addvalue(llvm_getmetadatareftypedconst(objcmoduleflag));
current_asmdata.AsmLists[al_rotypedconsts].Concat(objcmoduleflag);
end;
class procedure tllvmnodeutils.RegisterModuleInitFunction(pd: tprocdef);
begin
current_module.llvminitprocs.add(pd);
end;
class procedure tllvmnodeutils.RegisterModuleFiniFunction(pd: tprocdef);
begin
current_module.llvmfiniprocs.add(pd);
end;
begin
cnodeutils:=tllvmnodeutils;
end.
|
