mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-05-02 01:53:43 +02:00
334 lines
11 KiB
ObjectPascal
334 lines
11 KiB
ObjectPascal
{******************************************************************************
|
|
$Id$
|
|
Copyright (c) 2002 by Florian Klaempfl
|
|
|
|
PowerPC specific calling conventions
|
|
|
|
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 cpupara;
|
|
{SPARC specific calling conventions are handled by this unit}
|
|
{$INCLUDE fpcdefs.inc}
|
|
interface
|
|
uses
|
|
cpubase,
|
|
symconst,symbase,symtype,symdef,paramgr;
|
|
type
|
|
TSparcParaManager=class(TParaManager)
|
|
{Returns a structure giving the information on the storage of the parameter
|
|
(which must be an integer parameter)
|
|
@param(nr Parameter number of routine, starting from 1)}
|
|
function GetIntParaLoc(nr:longint):TParaLocation;override;
|
|
{Creates location information related to the parameter of the function}
|
|
procedure create_param_loc_info(p:TAbstractProcDef);override;
|
|
{Returns the location where the invisible parameter for structured function
|
|
results will be passed.}
|
|
function GetFuncRetParaLoc(p:TAbstractProcDef):TParaLocation;override;
|
|
end;
|
|
implementation
|
|
uses
|
|
verbose,
|
|
cpuinfo,cginfo,cgbase,
|
|
defutil;
|
|
function TSparcParaManager.GetIntParaLoc(nr:longint):TParaLocation;
|
|
begin
|
|
if nr<1
|
|
then
|
|
InternalError(2002100806);
|
|
FillChar(GetIntParaLoc,SizeOf(TParaLocation),0);
|
|
Dec(nr);
|
|
with GetIntParaLoc do
|
|
if nr<6
|
|
then{The six first parameters are passed into registers}
|
|
begin
|
|
loc:=LOC_REGISTER;
|
|
register:=TRegister(LongInt(R_i0)+nr);
|
|
end
|
|
else{The other parameters are passed into the frame}
|
|
begin
|
|
loc:=LOC_REFERENCE;
|
|
reference.index.enum:=frame_pointer_reg;
|
|
reference.offset:=-68-nr*4;
|
|
end;
|
|
end;
|
|
function GetParaLoc(p:TDef):TLoc;
|
|
begin
|
|
{Later, the LOC_REFERENCE is in most cases changed into LOC_REGISTER if
|
|
push_addr_param for the def is true}
|
|
case p.DefType of
|
|
OrdDef:
|
|
GetParaLoc:=LOC_REGISTER;
|
|
FloatDef:
|
|
GetParaLoc:=LOC_FPUREGISTER;
|
|
enumdef:
|
|
getparaloc:=LOC_REGISTER;
|
|
pointerdef:
|
|
getparaloc:=LOC_REGISTER;
|
|
formaldef:
|
|
getparaloc:=LOC_REGISTER;
|
|
classrefdef:
|
|
getparaloc:=LOC_REGISTER;
|
|
recorddef:
|
|
getparaloc:=LOC_REFERENCE;
|
|
objectdef:
|
|
if is_object(p)
|
|
then
|
|
getparaloc:=LOC_REFERENCE
|
|
else
|
|
getparaloc:=LOC_REGISTER;
|
|
stringdef:
|
|
if is_shortstring(p) or is_longstring(p)
|
|
then
|
|
getparaloc:=LOC_REFERENCE
|
|
else
|
|
getparaloc:=LOC_REGISTER;
|
|
procvardef:
|
|
if (po_methodpointer in tprocvardef(p).procoptions)
|
|
then
|
|
getparaloc:=LOC_REFERENCE
|
|
else
|
|
getparaloc:=LOC_REGISTER;
|
|
filedef:
|
|
getparaloc:=LOC_REGISTER;
|
|
arraydef:
|
|
getparaloc:=LOC_REFERENCE;
|
|
setdef:
|
|
if is_smallset(p)
|
|
then
|
|
getparaloc:=LOC_REGISTER
|
|
else
|
|
getparaloc:=LOC_REFERENCE;
|
|
variantdef:
|
|
getparaloc:=LOC_REFERENCE;
|
|
{ avoid problems with errornous definitions }
|
|
errordef:
|
|
getparaloc:=LOC_REGISTER;
|
|
else
|
|
internalerror(2002071001);
|
|
end;
|
|
end;
|
|
procedure TSparcParaManager.create_param_loc_info(p:TAbstractProcDef);
|
|
var
|
|
nextintreg,nextfloatreg:tregister;
|
|
stack_offset:aword;
|
|
hp:tparaitem;
|
|
loc:tloc;
|
|
is_64bit:boolean;
|
|
begin
|
|
nextintreg.enum:=R_O0;
|
|
nextfloatreg.enum:=R_F0;
|
|
stack_offset:=92;
|
|
hp:=TParaItem(p.para.First);
|
|
while assigned(hp) do
|
|
begin
|
|
loc:=GetParaLoc(hp.paratype.def);
|
|
case loc of
|
|
LOC_REGISTER:
|
|
begin
|
|
hp.paraloc.size:=def_cgSize(hp.paratype.def);
|
|
if hp.paraloc.size=OS_NO
|
|
then
|
|
hp.paraloc.size:=OS_ADDR;
|
|
is_64bit:=hp.paraloc.size in [OS_64,OS_S64];
|
|
if NextIntReg.enum<=ToldRegister(ord(R_i5)-ord(is_64bit))
|
|
then
|
|
begin
|
|
hp.paraloc.loc:=LOC_REGISTER;
|
|
hp.paraloc.registerlow:=NextIntReg;
|
|
inc(NextIntReg.enum);
|
|
if is_64bit
|
|
then
|
|
begin
|
|
hp.paraloc.registerhigh:=nextintreg;
|
|
inc(nextintreg.enum);
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
nextintreg.enum:=R_i6;
|
|
hp.paraloc.loc:=LOC_REFERENCE;
|
|
hp.paraloc.reference.index.enum:=stack_pointer_reg;
|
|
hp.paraloc.reference.offset:=stack_offset;
|
|
if not is_64bit
|
|
then
|
|
inc(stack_offset,4)
|
|
else
|
|
inc(stack_offset,8);
|
|
end;
|
|
end;
|
|
LOC_FPUREGISTER:
|
|
begin
|
|
if hp.paratyp in [vs_var,vs_out]
|
|
then
|
|
begin
|
|
if NextIntReg.enum<=R_O5
|
|
then
|
|
begin
|
|
hp.paraloc.size:=OS_ADDR;
|
|
hp.paraloc.loc:=LOC_REGISTER;
|
|
hp.paraloc.register:=nextintreg;
|
|
inc(nextintreg.enum);
|
|
end
|
|
else
|
|
begin
|
|
{!!!!!!!}
|
|
hp.paraloc.size:=def_cgsize(hp.paratype.def);
|
|
internalerror(2002071006);
|
|
end;
|
|
end
|
|
else if nextfloatreg.enum<=R_F10 then
|
|
begin
|
|
hp.paraloc.size:=def_cgsize(hp.paratype.def);
|
|
hp.paraloc.loc:=LOC_FPUREGISTER;
|
|
hp.paraloc.register:=nextfloatreg;
|
|
inc(nextfloatreg.enum);
|
|
end
|
|
else
|
|
begin
|
|
{!!!!!!!}
|
|
hp.paraloc.size:=def_cgsize(hp.paratype.def);
|
|
internalerror(2002071004);
|
|
end;
|
|
end;
|
|
LOC_REFERENCE:
|
|
begin
|
|
hp.paraloc.size:=OS_ADDR;
|
|
if push_addr_param(hp.paratype.def,p.proccalloption) or (hp.paratyp in [vs_var,vs_out]) then
|
|
begin
|
|
if nextintreg.enum<=R_O5 then
|
|
begin
|
|
hp.paraloc.loc:=LOC_REGISTER;
|
|
hp.paraloc.register:=nextintreg;
|
|
inc(nextintreg.enum);
|
|
end
|
|
else
|
|
begin
|
|
hp.paraloc.loc:=LOC_REFERENCE;
|
|
hp.paraloc.reference.index.enum:=stack_pointer_reg;
|
|
hp.paraloc.reference.offset:=stack_offset;
|
|
inc(stack_offset,4);
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
hp.paraloc.loc:=LOC_REFERENCE;
|
|
hp.paraloc.reference.index.enum:=stack_pointer_reg;
|
|
hp.paraloc.reference.offset:=stack_offset;
|
|
inc(stack_offset,hp.paratype.def.size);
|
|
end;
|
|
end;
|
|
else
|
|
internalerror(2002071002);
|
|
end;
|
|
hp:=TParaItem(hp.Next);
|
|
end;
|
|
end;
|
|
function tSparcParaManager.GetFuncRetParaLoc(p:TAbstractProcDef):TParaLocation;
|
|
begin
|
|
with GetFuncRetParaLoc do
|
|
case p.rettype.def.deftype of
|
|
orddef,enumdef:
|
|
begin
|
|
loc:=LOC_REGISTER;
|
|
register.enum:=return_result_reg;
|
|
size:=def_cgsize(p.rettype.def);
|
|
if size in [OS_S64,OS_64]
|
|
then
|
|
RegisterHigh.enum:=R_I1;
|
|
end;
|
|
floatdef:
|
|
begin
|
|
loc:=LOC_FPUREGISTER;
|
|
register.enum:=R_F1;
|
|
size:=def_cgsize(p.rettype.def);
|
|
end;
|
|
setdef,
|
|
variantdef,
|
|
pointerdef,
|
|
formaldef,
|
|
classrefdef,
|
|
recorddef,
|
|
objectdef,
|
|
stringdef,
|
|
procvardef,
|
|
filedef,
|
|
arraydef,
|
|
errordef:
|
|
begin
|
|
loc:=LOC_REFERENCE;
|
|
reference.index.enum:=frame_pointer_reg;
|
|
reference.offset:=64;
|
|
size:=OS_ADDR;
|
|
end;
|
|
else
|
|
internalerror(2002090903);
|
|
end;
|
|
end;
|
|
begin
|
|
ParaManager:=TSparcParaManager.create;
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.14 2003-01-08 18:43:58 daniel
|
|
* Tregister changed into a record
|
|
|
|
Revision 1.13 2003/01/05 21:32:35 mazen
|
|
* fixing several bugs compiling the RTL
|
|
|
|
Revision 1.12 2002/11/25 19:21:49 mazen
|
|
* fixed support of nSparcInline
|
|
|
|
Revision 1.11 2002/11/25 17:43:28 peter
|
|
* splitted defbase in defutil,symutil,defcmp
|
|
* merged isconvertable and is_equal into compare_defs(_ext)
|
|
* made operator search faster by walking the list only once
|
|
|
|
Revision 1.10 2002/11/18 17:32:01 peter
|
|
* pass proccalloption to ret_in_xxx and push_xxx functions
|
|
|
|
Revision 1.9 2002/11/03 20:22:40 mazen
|
|
* parameter handling updated
|
|
|
|
Revision 1.8 2002/10/13 21:46:07 mazen
|
|
* assembler output format fixed
|
|
|
|
Revision 1.7 2002/10/10 19:57:51 mazen
|
|
* Just to update repsitory
|
|
|
|
Revision 1.6 2002/10/10 15:10:39 mazen
|
|
* Internal error fixed, but usually i386 parameter model used
|
|
|
|
Revision 1.5 2002/10/09 13:52:19 mazen
|
|
just incase some one wolud help me debugging that\!
|
|
|
|
Revision 1.4 2002/10/08 21:02:22 mazen
|
|
* debugging register allocation
|
|
|
|
Revision 1.3 2002/10/07 20:33:05 mazen
|
|
word alignement modified in g_stack_frame
|
|
|
|
Revision 1.2 2002/10/04 21:57:42 mazen
|
|
* register allocation for parameters now done in cpupara, but InternalError(200109223) in cgcpu.pas:1053 is still not fixed du to location_force problem in ncgutils.pas:419
|
|
|
|
Revision 1.1 2002/08/21 13:30:07 mazen
|
|
*** empty log message ***
|
|
|
|
Revision 1.2 2002/07/11 14:41:34 florian
|
|
* start of the new generic parameter handling
|
|
|
|
Revision 1.1 2002/07/07 09:44:32 florian
|
|
* powerpc target fixed, very simple units can be compiled
|
|
}
|