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{
Copyright (c) 1999-2003 by Florian Klaempfl
This unit implements an asmoutput class for SPARC AT&T syntax
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 cpugas;
{$i fpcdefs.inc}
interface
uses
cpubase,systems,
aasmtai,aasmdata,aasmcpu,assemble,aggas,
cgutils,globtype;
type
TGasSPARC=class(TGnuAssembler)
constructor CreateWithWriter(info: pasminfo; wr: TExternalAssemblerOutputFile; freewriter, smart: boolean); override;
{# Constructs the command line for calling the assembler }
function MakeCmdLine: TCmdStr; override;
end;
TSPARCInstrWriter=class(TCPUInstrWriter)
procedure WriteInstruction(hp:Tai);override;
function GetReferenceString(var ref : TReference):string;
function getopstr(const Oper:TOper):string;
end;
implementation
uses
cutils,globals,cpuinfo,procinfo,
verbose,itcpugas,cgbase;
{****************************************************************************}
{ GNU PPC Assembler writer }
{****************************************************************************}
constructor TGasSPARC.CreateWithWriter(info: pasminfo; wr: TExternalAssemblerOutputFile; freewriter, smart: boolean);
begin
inherited;
InstrWriter := TSPARCInstrWriter.create(self);
end;
function TGasSPARC.MakeCmdLine: TCmdStr;
begin
result := Inherited MakeCmdLine;
{ ARCH selection }
// Note for casual readers: gas (GNU as) uses -Av7, -Av8, -Av9 etc. on SPARC,
// rather than variants of the -m option used by most other CPUs. Solaris as
// uses -xarch=v7, -xarch=v8 etc., that form is not supported here since there
// are probably other incompatibilties between the GNU and Solaris binutils
// that need to be reviewed.
//
// v9 is required as the default since the RTL started using membar at 2.2.2.
case current_settings.cputype of
{$ifdef SPARC}
cpu_SPARC_V7: Replace(result,'$ARCH','-Av7');
cpu_SPARC_V8: Replace(result,'$ARCH','-Av8');
{$endif SPARC}
cpu_SPARC_V9: Replace(result,'$ARCH','-Av9');
else
Replace(result,'$ARCH','-Av9')
end
end;
function TSPARCInstrWriter.GetReferenceString(var ref:TReference):string;
begin
result:='';
if assigned(ref.symbol) then
begin
result:=ref.symbol.name;
if assigned(ref.relsymbol) then
result:=result+'-'+ref.relsymbol.name;
end;
if (ref.offset<0) then
result:=result+tostr(ref.offset)
else if (ref.offset>0) then
begin
if assigned(ref.symbol) then
result:=result+'+';
result:=result+tostr(ref.offset);
end
{ asmreader appears to treat literal numbers as references }
else if (ref.symbol=nil) and (ref.base=NR_NO) and (ref.index=NR_NO) then
result:='0';
case ref.refaddr of
addr_high:
result:='%hi('+result+')';
addr_low:
result:='%lo('+result+')';
else
;
end;
if assigned(ref.symbol) or (ref.offset<>0) then
begin
if (ref.base<>NR_NO) then
begin
if (ref.index<>NR_NO) then
InternalError(2013013001);
if (result[1]='-') then
result:=gas_regname(ref.base)+result
else
result:=gas_regname(ref.base)+'+'+result;
end
else if (ref.index<>NR_NO) then
InternalError(2013122501);
end
else
begin
if (ref.base<>NR_NO) then
begin
result:=gas_regname(ref.base);
if (ref.index<>NR_NO) then
result:=result+'+'+gas_regname(ref.index);
end
else if (ref.index<>NR_NO) then
result:=gas_regname(ref.index);
end;
end;
function TSPARCInstrWriter.getopstr(const Oper:TOper):string;
begin
with Oper do
case typ of
top_reg:
getopstr:=gas_regname(reg);
top_const:
getopstr:=tostr(longint(val));
top_ref:
if (oper.ref^.refaddr in [addr_no,addr_pic]) or
((oper.ref^.refaddr=addr_low) and ((oper.ref^.base<>NR_NO) or
(oper.ref^.index<>NR_NO))) then
getopstr:='['+getreferencestring(ref^)+']'
else
getopstr:=getreferencestring(ref^);
else
internalerror(10001);
end;
end;
procedure TSPARCInstrWriter.WriteInstruction(hp:Tai);
procedure writePseudoInstruction(opc: TAsmOp);
begin
if (taicpu(hp).ops<>2) or
(taicpu(hp).oper[0]^.typ<>top_reg) or
(taicpu(hp).oper[1]^.typ<>top_reg) then
internalerror(200401045);
{ Fxxxs %f<even>,%f<even> }
owner.writer.AsmWriteln(#9+std_op2str[opc]+#9+getopstr(taicpu(hp).oper[0]^)+','+getopstr(taicpu(hp).oper[1]^));
{ FMOVs %f<odd>,%f<odd> }
inc(taicpu(hp).oper[0]^.reg);
inc(taicpu(hp).oper[1]^.reg);
owner.writer.AsmWriteln(#9+std_op2str[A_FMOVs]+#9+getopstr(taicpu(hp).oper[0]^)+','+getopstr(taicpu(hp).oper[1]^));
dec(taicpu(hp).oper[0]^.reg);
dec(taicpu(hp).oper[1]^.reg);
end;
var
Op:TAsmOp;
s:String;
i:Integer;
begin
if hp.typ<>ait_instruction then
exit;
op:=taicpu(hp).opcode;
if (op=A_Bxx) and (taicpu(hp).condition in floatAsmConds) then
op:=A_FBxx;
{ translate pseudoops, this should be move to a separate pass later, so it's done before
peephole optimization }
case op of
A_FABSd:
writePseudoInstruction(A_FABSs);
A_FMOVd:
writePseudoInstruction(A_FMOVs);
A_FNEGd:
writePseudoInstruction(A_FNEGs);
else
begin
{ call maybe not translated to call }
s:=#9+std_op2str[op]+cond2str[taicpu(hp).condition];
if taicpu(hp).delayslot_annulled then
s:=s+',a';
if taicpu(hp).ops>0 then
begin
s:=s+#9+getopstr(taicpu(hp).oper[0]^);
for i:=1 to taicpu(hp).ops-1 do
s:=s+','+getopstr(taicpu(hp).oper[i]^);
end;
owner.writer.AsmWriteLn(s);
end;
end;
end;
const
as_sparc_as_info : tasminfo =
(
id : as_gas;
idtxt : 'AS';
asmbin : 'as';
{$ifdef FPC_SPARC_V8_ONLY}
asmcmd : '$PIC -o $OBJ $EXTRAOPT $ASM';
{$else}
asmcmd : '$ARCH $PIC -32 -o $OBJ $EXTRAOPT $ASM';
{$endif}
supported_targets : [system_sparc_solaris,system_sparc_linux,system_sparc_embedded];
flags : [af_needar,af_smartlink_sections];
labelprefix : '.L';
comment : '# ';
dollarsign: '$';
);
as_sparc_gas_info : tasminfo =
(
id : as_ggas;
idtxt : 'GAS';
asmbin : 'gas';
asmcmd : '$ARCH $PIC -o $OBJ $EXTRAOPT $ASM';
supported_targets : [system_sparc_solaris,system_sparc_linux,system_sparc_embedded];
flags : [af_needar,af_smartlink_sections];
labelprefix : '.L';
comment : '# ';
dollarsign: '$';
);
as_sparc64_as_info : tasminfo =
(
id : as_gas;
idtxt : 'AS';
asmbin : 'as';
{$ifdef FPC_SPARC_V8_ONLY}
asmcmd : '$PIC -o $OBJ $EXTRAOPT $ASM';
{$else}
asmcmd : '$ARCH $PIC -o $OBJ $EXTRAOPT $ASM';
{$endif}
supported_targets : [system_sparc64_linux];
flags : [af_needar,af_smartlink_sections];
labelprefix : '.L';
comment : '# ';
dollarsign: '$';
);
as_sparc64_gas_info : tasminfo =
(
id : as_ggas;
idtxt : 'GAS';
asmbin : 'gas';
asmcmd : '$ARCH $PIC -o $OBJ $EXTRAOPT $ASM';
supported_targets : [system_sparc64_linux];
flags : [af_needar,af_smartlink_sections];
labelprefix : '.L';
comment : '# ';
dollarsign: '$';
);
begin
{$ifdef SPARC}
RegisterAssembler(as_SPARC_as_info,TGasSPARC);
RegisterAssembler(as_SPARC_gas_info,TGasSPARC);
{$else SPARC}
RegisterAssembler(as_SPARC64_as_info,TGasSPARC);
RegisterAssembler(as_SPARC64_gas_info,TGasSPARC);
{$endif SPARC}
end.
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