mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-05-04 21:43:51 +02:00

o handle parameters and function results divided over multiple paralocs, including generating fake recorddefs that represent o fixed zero/sign extension handling o properly handle difference between procdefs as printed for the implementation, an alias declaration or a procvar definition git-svn-id: branches/hlcgllvm@27009 -
850 lines
26 KiB
ObjectPascal
850 lines
26 KiB
ObjectPascal
{
|
|
Copyright (c) 1998-2013 by the Free Pascal team
|
|
|
|
This unit implements the generic part of the LLVM IR writer
|
|
|
|
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 agllvm;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
globtype,globals,
|
|
aasmbase,aasmtai,aasmdata,
|
|
assemble;
|
|
|
|
type
|
|
TLLVMInstrWriter = class;
|
|
{ TLLVMAssember }
|
|
|
|
TLLVMAssember=class(texternalassembler)
|
|
protected
|
|
procedure WriteExtraHeader;virtual;
|
|
procedure WriteExtraFooter;virtual;
|
|
procedure WriteInstruction(hp: tai);
|
|
procedure WriteLlvmInstruction(hp: tai);
|
|
// procedure WriteWeakSymbolDef(s: tasmsymbol); virtual;
|
|
procedure WriteDirectiveName(dir: TAsmDirective); virtual;
|
|
procedure WriteWeakSymbolDef(s: tasmsymbol);
|
|
public
|
|
constructor create(smart: boolean); override;
|
|
function MakeCmdLine: TCmdStr; override;
|
|
procedure WriteTree(p:TAsmList);override;
|
|
procedure WriteAsmList;override;
|
|
destructor destroy; override;
|
|
protected
|
|
InstrWriter: TLLVMInstrWriter;
|
|
end;
|
|
|
|
|
|
{# This is the base class for writing instructions.
|
|
|
|
The WriteInstruction() method must be overridden
|
|
to write a single instruction to the assembler
|
|
file.
|
|
}
|
|
TLLVMInstrWriter = class
|
|
constructor create(_owner: TLLVMAssember);
|
|
procedure WriteInstruction(hp : tai);
|
|
protected
|
|
owner: TLLVMAssember;
|
|
end;
|
|
|
|
|
|
implementation
|
|
|
|
uses
|
|
SysUtils,
|
|
cutils,cfileutl,systems,
|
|
fmodule,verbose,
|
|
llvmbase,aasmllvm,itllvm,llvmdef,
|
|
cgbase,cgutils,cpubase;
|
|
|
|
const
|
|
line_length = 70;
|
|
|
|
var
|
|
symendcount : longint;
|
|
|
|
type
|
|
{$ifdef cpuextended}
|
|
t80bitarray = array[0..9] of byte;
|
|
{$endif cpuextended}
|
|
t64bitarray = array[0..7] of byte;
|
|
t32bitarray = array[0..3] of byte;
|
|
|
|
{****************************************************************************}
|
|
{ Support routines }
|
|
{****************************************************************************}
|
|
|
|
function single2str(d : single) : string;
|
|
var
|
|
hs : string;
|
|
begin
|
|
str(d,hs);
|
|
{ replace space with + }
|
|
if hs[1]=' ' then
|
|
hs[1]:='+';
|
|
single2str:=hs
|
|
end;
|
|
|
|
function double2str(d : double) : string;
|
|
var
|
|
hs : string;
|
|
begin
|
|
str(d,hs);
|
|
{ replace space with + }
|
|
if hs[1]=' ' then
|
|
hs[1]:='+';
|
|
double2str:=hs
|
|
end;
|
|
|
|
function extended2str(e : extended) : string;
|
|
var
|
|
hs : string;
|
|
begin
|
|
str(e,hs);
|
|
{ replace space with + }
|
|
if hs[1]=' ' then
|
|
hs[1]:='+';
|
|
extended2str:=hs
|
|
end;
|
|
|
|
|
|
{****************************************************************************}
|
|
{ LLVM Instruction writer }
|
|
{****************************************************************************}
|
|
|
|
function getregisterstring(reg: tregister): ansistring;
|
|
begin
|
|
if getregtype(reg)=R_TEMPREGISTER then
|
|
result:='%tmp.'
|
|
else
|
|
result:='%reg.'+tostr(byte(getregtype(reg)))+'_';
|
|
result:=result+tostr(getsupreg(reg));
|
|
end;
|
|
|
|
|
|
function getreferencealignstring(var ref: treference) : ansistring;
|
|
begin
|
|
result:=', align '+tostr(ref.alignment);
|
|
end;
|
|
|
|
|
|
function getreferencestring(var ref : treference; withalign: boolean) : ansistring;
|
|
begin
|
|
result:='';
|
|
if assigned(ref.relsymbol) or
|
|
(assigned(ref.symbol) =
|
|
(ref.base<>NR_NO)) or
|
|
(ref.index<>NR_NO) or
|
|
(ref.offset<>0) then
|
|
begin
|
|
result:=' **(error ref: ';
|
|
if assigned(ref.symbol) then
|
|
result:=result+'sym='+ref.symbol.name+', ';
|
|
if assigned(ref.relsymbol) then
|
|
result:=result+'sym='+ref.relsymbol.name+', ';
|
|
if ref.base=NR_NO then
|
|
result:=result+'base=NR_NO, ';
|
|
if ref.index<>NR_NO then
|
|
result:=result+'index<>NR_NO, ';
|
|
if ref.offset<>0 then
|
|
result:=result+'offset='+tostr(ref.offset);
|
|
result:=result+')**'
|
|
// internalerror(2013060225);
|
|
end;
|
|
if ref.base<>NR_NO then
|
|
result:=result+getregisterstring(ref.base)
|
|
else
|
|
result:=result+ref.symbol.name;
|
|
if withalign then
|
|
result:=result+getreferencealignstring(ref);
|
|
end;
|
|
|
|
|
|
function getparas(const o: toper): ansistring;
|
|
var
|
|
i: longint;
|
|
para: pllvmcallpara;
|
|
begin
|
|
result:='(';
|
|
for i:=0 to o.paras.count-1 do
|
|
begin
|
|
if i<>0 then
|
|
result:=result+', ';
|
|
para:=pllvmcallpara(o.paras[i]);
|
|
result:=result+llvmencodetype(para^.def);
|
|
case para^.loc of
|
|
LOC_REGISTER,
|
|
LOC_FPUREGISTER,
|
|
LOC_MMREGISTER:
|
|
result:=result+' '+getregisterstring(para^.reg);
|
|
else
|
|
internalerror(2014010801);
|
|
end;
|
|
end;
|
|
result:=result+')';
|
|
end;
|
|
|
|
|
|
function getopstr(const o:toper; refwithalign: boolean) : ansistring;
|
|
var
|
|
hs : ansistring;
|
|
doubleval: record
|
|
case byte of
|
|
1: (d: double);
|
|
2: (i: int64);
|
|
end;
|
|
{$ifdef cpuextended}
|
|
extendedval: record
|
|
case byte of
|
|
1: (e: extended);
|
|
2: (r: record
|
|
{$ifdef FPC_LITTLE_ENDIAN}
|
|
l: int64;
|
|
h: word;
|
|
{$else FPC_LITTLE_ENDIAN}
|
|
h: int64;
|
|
l: word;
|
|
{$endif FPC_LITTLE_ENDIAN}
|
|
end;
|
|
);
|
|
end;
|
|
{$endif cpuextended}
|
|
|
|
begin
|
|
case o.typ of
|
|
top_reg:
|
|
getopstr:=getregisterstring(o.reg);
|
|
top_const:
|
|
getopstr:=tostr(int64(o.val));
|
|
top_ref:
|
|
if o.ref^.refaddr=addr_full then
|
|
begin
|
|
getopstr:='';
|
|
if o.ref^.symbol.typ=AT_LABEL then
|
|
getopstr:='label %';
|
|
hs:=o.ref^.symbol.name;
|
|
if o.ref^.offset<>0 then
|
|
internalerror(2013060223);
|
|
getopstr:=getopstr+hs;
|
|
end
|
|
else
|
|
getopstr:=getreferencestring(o.ref^,refwithalign);
|
|
top_def:
|
|
begin
|
|
getopstr:=llvmencodetype(o.def);
|
|
end;
|
|
top_cond:
|
|
begin
|
|
getopstr:=llvm_cond2str[o.cond];
|
|
end;
|
|
top_fpcond:
|
|
begin
|
|
getopstr:=llvm_fpcond2str[o.fpcond];
|
|
end;
|
|
top_single,
|
|
top_double:
|
|
begin
|
|
{ "When using the hexadecimal form, constants of types half,
|
|
float, and double are represented using the 16-digit form shown
|
|
above (which matches the IEEE754 representation for double)"
|
|
|
|
And always in big endian form (sign bit leftmost)
|
|
}
|
|
if o.typ=top_double then
|
|
doubleval.d:=o.dval
|
|
else
|
|
doubleval.d:=o.sval;
|
|
result:='0x'+hexstr(doubleval.i,16);
|
|
end;
|
|
top_para:
|
|
begin
|
|
result:=getparas(o);
|
|
end;
|
|
{$ifdef cpuextended}
|
|
top_extended80:
|
|
begin
|
|
{ hex format is always big endian in llvm }
|
|
extendedval.e:=o.eval;
|
|
result:='0xK'+hexstr(extendedval.r.h,sizeof(extendedval.r.h)*2)+hexstr(extendedval.r.l,sizeof(extendedval.r.l)*2);
|
|
end;
|
|
{$endif cpuextended}
|
|
else
|
|
internalerror(2013060227);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TLlvmInstrWriter.WriteInstruction(hp: tai);
|
|
var
|
|
op: tllvmop;
|
|
s: string;
|
|
i, opstart: byte;
|
|
sep: string[3];
|
|
done: boolean;
|
|
begin
|
|
op:=taillvm(hp).llvmopcode;
|
|
s:=#9;
|
|
sep:=' ';
|
|
done:=false;
|
|
opstart:=0;
|
|
case op of
|
|
la_ret, la_br, la_switch, la_indirectbr,
|
|
la_invoke, la_resume,
|
|
la_unreachable,
|
|
la_store,
|
|
la_fence,
|
|
la_cmpxchg,
|
|
la_atomicrmw:
|
|
begin
|
|
{ instructions that never have a result }
|
|
end;
|
|
la_call:
|
|
begin
|
|
if taillvm(hp).oper[0]^.reg<>NR_NO then
|
|
s:=s+getregisterstring(taillvm(hp).oper[0]^.reg)+' = ';
|
|
sep:=' ';
|
|
opstart:=1;
|
|
end;
|
|
la_alloca:
|
|
begin
|
|
s:=s+getreferencestring(taillvm(hp).oper[0]^.ref^,false)+' = ';
|
|
sep:=' ';
|
|
opstart:=1;
|
|
end;
|
|
la_trunc, la_zext, la_sext, la_fptrunc, la_fpext,
|
|
la_fptoui, la_fptosi, la_uitofp, la_sitofp,
|
|
la_ptrtoint, la_inttoptr,
|
|
la_bitcast:
|
|
begin
|
|
s:=s+getopstr(taillvm(hp).oper[0]^,false)+' = '+
|
|
llvm_op2str[op]+' '+
|
|
getopstr(taillvm(hp).oper[1]^,false)+' '+
|
|
getopstr(taillvm(hp).oper[2]^,false)+' to '+
|
|
getopstr(taillvm(hp).oper[3]^,false);
|
|
done:=true;
|
|
end
|
|
else
|
|
begin
|
|
s:=s+getopstr(taillvm(hp).oper[0]^,true)+' = ';
|
|
sep:=' ';
|
|
opstart:=1
|
|
end;
|
|
end;
|
|
{ process operands }
|
|
if not done then
|
|
begin
|
|
s:=s+llvm_op2str[op];
|
|
if taillvm(hp).ops<>0 then
|
|
begin
|
|
for i:=opstart to taillvm(hp).ops-1 do
|
|
begin
|
|
s:=s+sep+getopstr(taillvm(hp).oper[i]^,op in [la_load,la_store]);
|
|
if (taillvm(hp).oper[i]^.typ in [top_def,top_cond,top_fpcond]) or
|
|
(op=la_call) then
|
|
sep :=' '
|
|
else
|
|
sep:=', ';
|
|
end;
|
|
end;
|
|
end;
|
|
if op=la_alloca then
|
|
begin
|
|
s:=s+getreferencealignstring(taillvm(hp).oper[0]^.ref^)
|
|
end;
|
|
owner.AsmWriteLn(s);
|
|
end;
|
|
|
|
{****************************************************************************}
|
|
{ LLVM Assembler writer }
|
|
{****************************************************************************}
|
|
|
|
destructor TLLVMAssember.Destroy;
|
|
begin
|
|
InstrWriter.free;
|
|
inherited destroy;
|
|
end;
|
|
|
|
|
|
function TLLVMAssember.MakeCmdLine: TCmdStr;
|
|
var
|
|
optstr: TCmdStr;
|
|
begin
|
|
result := inherited MakeCmdLine;
|
|
{ standard optimization flags for llc -- todo: this needs to be split
|
|
into a call to opt and one to llc }
|
|
if cs_opt_level3 in current_settings.optimizerswitches then
|
|
optstr:='-O3'
|
|
else if cs_opt_level2 in current_settings.optimizerswitches then
|
|
optstr:='-O2'
|
|
else if cs_opt_level1 in current_settings.optimizerswitches then
|
|
optstr:='-O1'
|
|
else
|
|
optstr:='-O0';
|
|
{ stack frame elimination }
|
|
if not(cs_opt_stackframe in current_settings.optimizerswitches) then
|
|
optstr:=optstr+' -disable-fp-elim';
|
|
{ fast math }
|
|
if cs_opt_fastmath in current_settings.optimizerswitches then
|
|
optstr:=optstr+' -enable-unsafe-fp-math -enable-fp-mad -fp-contract=fast';
|
|
{ smart linking }
|
|
if cs_create_smart in current_settings.moduleswitches then
|
|
optstr:=optstr+' -fdata-sections -fcode-sections';
|
|
{ pic }
|
|
if cs_create_pic in current_settings.moduleswitches then
|
|
optstr:=optstr+' -relocation-model=pic'
|
|
else if not(target_info.system in systems_darwin) then
|
|
optstr:=optstr+' -relocation-model=static'
|
|
else
|
|
optstr:=optstr+' -relocation-model=dynamic-no-pic';
|
|
{ our stack alignment is non-standard on some targets. The following
|
|
parameter is however ignored on some targets by llvm, so it may not
|
|
be enough }
|
|
optstr:=optstr+' -stack-alignment='+tostr(target_info.stackalign*8);
|
|
{ force object output instead of textual assembler code }
|
|
optstr:=optstr+' -filetype=obj';
|
|
replace(result,'$OPT',optstr);
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteTree(p:TAsmList);
|
|
var
|
|
ch : char;
|
|
lasthp,
|
|
hp : tai;
|
|
constdef : taiconst_type;
|
|
s,t : string;
|
|
i,pos,l : longint;
|
|
InlineLevel : cardinal;
|
|
last_align : longint;
|
|
co : comp;
|
|
sin : single;
|
|
d : double;
|
|
{$ifdef cpuextended}
|
|
e : extended;
|
|
{$endif cpuextended}
|
|
do_line : boolean;
|
|
|
|
sepChar : char;
|
|
replaceforbidden: boolean;
|
|
begin
|
|
if not assigned(p) then
|
|
exit;
|
|
replaceforbidden:=target_asm.dollarsign<>'$';
|
|
|
|
last_align := 2;
|
|
InlineLevel:=0;
|
|
{ lineinfo is only needed for al_procedures (PFV) }
|
|
do_line:=(cs_asm_source in current_settings.globalswitches) or
|
|
((cs_lineinfo in current_settings.moduleswitches)
|
|
and (p=current_asmdata.asmlists[al_procedures]));
|
|
lasthp:=nil;
|
|
hp:=tai(p.first);
|
|
while assigned(hp) do
|
|
begin
|
|
prefetch(pointer(hp.next)^);
|
|
if not(hp.typ in SkipLineInfo) then
|
|
begin
|
|
current_filepos:=tailineinfo(hp).fileinfo;
|
|
{ no line info for inlined code }
|
|
if do_line and (inlinelevel=0) then
|
|
WriteSourceLine(hp as tailineinfo);
|
|
end;
|
|
|
|
case hp.typ of
|
|
|
|
ait_comment :
|
|
Begin
|
|
AsmWrite(target_asm.comment);
|
|
AsmWritePChar(tai_comment(hp).str);
|
|
AsmLn;
|
|
End;
|
|
|
|
ait_regalloc :
|
|
begin
|
|
if (cs_asm_regalloc in current_settings.globalswitches) then
|
|
begin
|
|
AsmWrite(#9+target_asm.comment+'Register ');
|
|
repeat
|
|
AsmWrite(std_regname(Tai_regalloc(hp).reg));
|
|
if (hp.next=nil) or
|
|
(tai(hp.next).typ<>ait_regalloc) or
|
|
(tai_regalloc(hp.next).ratype<>tai_regalloc(hp).ratype) then
|
|
break;
|
|
hp:=tai(hp.next);
|
|
AsmWrite(',');
|
|
until false;
|
|
AsmWrite(' ');
|
|
AsmWriteLn(regallocstr[tai_regalloc(hp).ratype]);
|
|
end;
|
|
end;
|
|
|
|
ait_tempalloc :
|
|
begin
|
|
if (cs_asm_tempalloc in current_settings.globalswitches) then
|
|
WriteTempalloc(tai_tempalloc(hp));
|
|
end;
|
|
|
|
ait_align :
|
|
begin
|
|
{ has to be specified as part of the symbol declaration }
|
|
AsmWriteln('; error: explicit aligns are forbidden');
|
|
// internalerror(2013010714);
|
|
end;
|
|
|
|
ait_section :
|
|
begin
|
|
AsmWrite(target_asm.comment);
|
|
AsmWriteln('section');
|
|
end;
|
|
|
|
ait_datablock :
|
|
begin
|
|
AsmWrite(target_asm.comment);
|
|
AsmWriteln('datablock');
|
|
end;
|
|
|
|
ait_const:
|
|
begin
|
|
AsmWrite(target_asm.comment);
|
|
AsmWriteln('const');
|
|
end;
|
|
|
|
{ the "and defined(FPC_HAS_TYPE_EXTENDED)" isn't optimal but currently the only solution
|
|
it prevents proper cross compilation to i386 though
|
|
}
|
|
{$if defined(cpuextended) and defined(FPC_HAS_TYPE_EXTENDED)}
|
|
ait_real_80bit :
|
|
begin
|
|
// if do_line then
|
|
AsmWriteLn(target_asm.comment+'value: '+extended2str(tai_real_80bit(hp).value));
|
|
end;
|
|
{$endif cpuextended}
|
|
|
|
ait_real_32bit,
|
|
ait_real_64bit:
|
|
begin
|
|
if hp.typ=ait_real_32bit then
|
|
begin
|
|
// if do_line then
|
|
AsmWriteLn(target_asm.comment+'value: '+single2str(tai_real_32bit(hp).value));
|
|
// d:=tai_real_32bit(hp).value
|
|
end
|
|
else
|
|
begin
|
|
// if do_line then
|
|
AsmWriteLn(target_asm.comment+'value: '+double2str(tai_real_64bit(hp).value));
|
|
// d:=tai_real_64bit(hp).value;
|
|
end;
|
|
end;
|
|
|
|
ait_comp_64bit :
|
|
begin
|
|
// if do_line then
|
|
AsmWriteLn(target_asm.comment+'value: '+extended2str(tai_comp_64bit(hp).value));
|
|
end;
|
|
|
|
ait_string :
|
|
begin
|
|
AsmWrite(target_asm.comment);
|
|
AsmWriteln('string');
|
|
end;
|
|
|
|
ait_label :
|
|
begin
|
|
if (tai_label(hp).labsym.is_used) then
|
|
begin
|
|
if (tai_label(hp).labsym.bind=AB_PRIVATE_EXTERN) then
|
|
begin
|
|
{ should be emitted as part of the variable/function def }
|
|
internalerror(2013010703);
|
|
end;
|
|
if tai_label(hp).labsym.bind in [AB_GLOBAL,AB_PRIVATE_EXTERN] then
|
|
begin
|
|
{ should be emitted as part of the variable/function def }
|
|
internalerror(2013010704);
|
|
end;
|
|
if replaceforbidden then
|
|
AsmWrite(ReplaceForbiddenAsmSymbolChars(tai_label(hp).labsym.name))
|
|
else
|
|
AsmWrite(tai_label(hp).labsym.name);
|
|
AsmWriteLn(':');
|
|
end;
|
|
end;
|
|
|
|
ait_symbol :
|
|
begin
|
|
{ should be emitted as part of the variable/function def }
|
|
asmwrite('; (ait_symbol error, should be part of variable/function def) :');
|
|
asmwriteln(tai_symbol(hp).sym.name);
|
|
// internalerror(2013010705);
|
|
end;
|
|
ait_llvmprocdef:
|
|
begin
|
|
asmwrite('define ');
|
|
asmwrite(llvmencodeproctype(tprocdef(taillvmdecl(hp).def),'',lpd_decl));
|
|
asmwriteln(' {');
|
|
end;
|
|
ait_llvmvarsym:
|
|
begin
|
|
asmwrite(taillvmvarsym(hp).varsym.mangledname);
|
|
if not taillvmvarsym(hp).varsym.globalasmsym then
|
|
asmwrite(' = internal global ')
|
|
else
|
|
asmwrite(' = global ');
|
|
asmwrite(llvmencodetype(taillvmvarsym(hp).varsym.vardef));
|
|
asmwrite(' zeroinitializer, align ');
|
|
asmwriteln(tostr(taillvmvarsym(hp).varsym.vardef.alignment));
|
|
end;
|
|
ait_llvmalias:
|
|
begin
|
|
asmwrite('@'+taillvmalias(hp).newsym.name);
|
|
asmwrite(' = alias ');
|
|
if taillvmalias(hp).linkage<>lll_default then
|
|
begin
|
|
str(taillvmalias(hp).linkage,s);
|
|
asmwrite(copy(s,length('lll_'),255));
|
|
asmwrite(' ');
|
|
end
|
|
else
|
|
asmwrite('external ');
|
|
if taillvmalias(hp).vis<>llv_default then
|
|
begin
|
|
str(taillvmalias(hp).vis,s);
|
|
asmwrite(copy(s,length('llv_'),255));
|
|
asmwrite(' ');
|
|
end;
|
|
asmwrite(llvmencodeproctype(tabstractprocdef(taillvmalias(hp).def),'',lpd_alias));
|
|
asmwrite('* ');
|
|
asmwriteln(taillvmalias(hp).oldsym.name);
|
|
end;
|
|
{$ifdef arm}
|
|
ait_thumb_func:
|
|
begin
|
|
{ should be emitted as part of the function def }
|
|
internalerror(2013010706);
|
|
end;
|
|
ait_thumb_set:
|
|
begin
|
|
{ should be emitted as part of the symbol def }
|
|
internalerror(2013010707);
|
|
end;
|
|
{$endif arm}
|
|
ait_set:
|
|
begin
|
|
{ should be emitted as part of the symbol def }
|
|
internalerror(2013010708);
|
|
end;
|
|
|
|
ait_weak:
|
|
begin
|
|
{ should be emitted as part of the symbol def }
|
|
internalerror(2013010709);
|
|
end;
|
|
|
|
ait_symbol_end :
|
|
begin
|
|
if tai_symbol_end(hp).sym.typ=AT_FUNCTION then
|
|
asmwriteln('}')
|
|
else
|
|
asmwriteln('; ait_symbol_end error, should not be generated');
|
|
// internalerror(2013010711);
|
|
end;
|
|
|
|
ait_instruction :
|
|
begin
|
|
WriteInstruction(hp);
|
|
end;
|
|
|
|
ait_llvmins:
|
|
begin
|
|
WriteLlvmInstruction(hp);
|
|
end;
|
|
|
|
ait_stab :
|
|
begin
|
|
internalerror(2013010712);
|
|
end;
|
|
|
|
ait_force_line,
|
|
ait_function_name :
|
|
;
|
|
|
|
ait_cutobject :
|
|
begin
|
|
end;
|
|
|
|
ait_marker :
|
|
if tai_marker(hp).kind=mark_NoLineInfoStart then
|
|
inc(InlineLevel)
|
|
else if tai_marker(hp).kind=mark_NoLineInfoEnd then
|
|
dec(InlineLevel);
|
|
|
|
ait_directive :
|
|
begin
|
|
WriteDirectiveName(tai_directive(hp).directive);
|
|
if tai_directive(hp).name <>'' then
|
|
AsmWrite(tai_directive(hp).name);
|
|
AsmLn;
|
|
end;
|
|
|
|
ait_seh_directive :
|
|
begin
|
|
internalerror(2013010713);
|
|
end;
|
|
ait_varloc:
|
|
begin
|
|
if tai_varloc(hp).newlocationhi<>NR_NO then
|
|
AsmWrite(strpnew('Var '+tai_varloc(hp).varsym.realname+' located in register '+
|
|
std_regname(tai_varloc(hp).newlocationhi)+':'+std_regname(tai_varloc(hp).newlocation)))
|
|
else
|
|
AsmWrite(strpnew('Var '+tai_varloc(hp).varsym.realname+' located in register '+
|
|
std_regname(tai_varloc(hp).newlocation)));
|
|
AsmLn;
|
|
end;
|
|
else
|
|
internalerror(2006012201);
|
|
end;
|
|
lasthp:=hp;
|
|
hp:=tai(hp.next);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteExtraHeader;
|
|
begin
|
|
AsmWrite('target datalayout = "');
|
|
AsmWrite(target_info.llvmdatalayout);
|
|
AsmWriteln('"');
|
|
AsmWrite('target triple = "');
|
|
AsmWrite(llvm_target_name);
|
|
AsmWriteln('"');
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteExtraFooter;
|
|
begin
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteInstruction(hp: tai);
|
|
begin
|
|
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteLlvmInstruction(hp: tai);
|
|
begin
|
|
InstrWriter.WriteInstruction(hp);
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteWeakSymbolDef(s: tasmsymbol);
|
|
begin
|
|
AsmWriteLn(#9'.weak '+s.name);
|
|
end;
|
|
|
|
|
|
constructor TLLVMAssember.create(smart: boolean);
|
|
begin
|
|
inherited create(smart);
|
|
InstrWriter:=TLLVMInstrWriter.create(self);
|
|
end;
|
|
|
|
|
|
|
|
procedure TLLVMAssember.WriteDirectiveName(dir: TAsmDirective);
|
|
begin
|
|
AsmWrite('.'+directivestr[dir]+' ');
|
|
end;
|
|
|
|
|
|
procedure TLLVMAssember.WriteAsmList;
|
|
var
|
|
n : string;
|
|
hal : tasmlisttype;
|
|
i: longint;
|
|
begin
|
|
|
|
if current_module.mainsource<>'' then
|
|
n:=ExtractFileName(current_module.mainsource)
|
|
else
|
|
n:=InputFileName;
|
|
|
|
{ gcc does not add it either for Darwin. Grep for
|
|
TARGET_ASM_FILE_START_FILE_DIRECTIVE in gcc/config/*.h
|
|
}
|
|
if not(target_info.system in systems_darwin) then
|
|
AsmWriteLn(#9'.file "'+FixFileName(n)+'"');
|
|
|
|
WriteExtraHeader;
|
|
AsmStartSize:=AsmSize;
|
|
symendcount:=0;
|
|
|
|
for hal:=low(TasmlistType) to high(TasmlistType) do
|
|
begin
|
|
AsmWriteLn(target_asm.comment+'Begin asmlist '+AsmlistTypeStr[hal]);
|
|
writetree(current_asmdata.asmlists[hal]);
|
|
AsmWriteLn(target_asm.comment+'End asmlist '+AsmlistTypeStr[hal]);
|
|
end;
|
|
|
|
{ add weak symbol markers }
|
|
for i:=0 to current_asmdata.asmsymboldict.count-1 do
|
|
if (tasmsymbol(current_asmdata.asmsymboldict[i]).bind=AB_WEAK_EXTERNAL) then
|
|
writeweaksymboldef(tasmsymbol(current_asmdata.asmsymboldict[i]));
|
|
|
|
AsmLn;
|
|
end;
|
|
|
|
|
|
|
|
{****************************************************************************}
|
|
{ Abstract Instruction Writer }
|
|
{****************************************************************************}
|
|
|
|
constructor TLLVMInstrWriter.create(_owner: TLLVMAssember);
|
|
begin
|
|
inherited create;
|
|
owner := _owner;
|
|
end;
|
|
|
|
|
|
const
|
|
as_llvm_info : tasminfo =
|
|
(
|
|
id : as_llvm;
|
|
|
|
idtxt : 'LLVM-AS';
|
|
asmbin : 'llc';
|
|
asmcmd: '$OPT -o $OBJ $ASM';
|
|
supported_targets : [system_x86_64_linux,system_x86_64_darwin,system_powerpc64_darwin];
|
|
flags : [af_smartlink_sections];
|
|
labelprefix : 'L';
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
|
|
begin
|
|
RegisterAssembler(as_llvm_info,TLLVMAssember);
|
|
end.
|