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fpc/compiler/sparc/cpupara.pas
peter f44380e4a9 * fixed alias/colouring > 255
2003-11-10 19:05:50 +00:00

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{
$Id$
Copyright (c) 1998-2002 by Florian Klaempfl
Calling conventions for the SPARC
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;
{$i fpcdefs.inc}
interface
uses
cpubase,cgbase,
aasmtai,globtype,
symconst,symtype,symdef,paramgr;
type
TSparcParaManager=class(TParaManager)
function copy_value_on_stack(varspez:tvarspez;def : tdef;calloption : tproccalloption) : boolean;override;
function push_addr_param(varspez:tvarspez;def : tdef;calloption : tproccalloption) : boolean;override;
function get_volatile_registers_int(calloption : tproccalloption):TCpuRegisterSet;override;
function get_volatile_registers_fpu(calloption : tproccalloption):TCpuRegisterSet;override;
{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(calloption : tproccalloption; nr : longint) : tparalocation;override;
procedure allocparaloc(list: taasmoutput; const loc: tparalocation);override;
procedure freeparaloc(list: taasmoutput; const loc: tparalocation);override;
function create_paraloc_info(p:TAbstractProcDef; side: tcallercallee):longint;override;
procedure splitparaloc64(const locpara:tparalocation;var loclopara,lochipara:tparalocation);override;
end;
implementation
uses
verbose,
defutil,cgobj;
function tsparcparamanager.copy_value_on_stack(varspez:tvarspez;def : tdef;calloption : tproccalloption) : boolean;
begin
result:=false;
end;
{ true if a parameter is too large to copy and only the address is pushed }
function tsparcparamanager.push_addr_param(varspez:tvarspez;def : tdef;calloption : tproccalloption) : boolean;
begin
result:=false;
{ var,out always require address }
if varspez in [vs_var,vs_out] then
begin
result:=true;
exit;
end;
case def.deftype of
recorddef,
arraydef,
variantdef,
formaldef :
push_addr_param:=true;
objectdef :
result:=is_object(def);
stringdef :
result:=(tstringdef(def).string_typ in [st_shortstring,st_longstring]);
procvardef :
result:=(po_methodpointer in tprocvardef(def).procoptions);
setdef :
result:=(tsetdef(def).settype<>smallset);
end;
end;
function tsparcparamanager.get_volatile_registers_int(calloption : tproccalloption):TCpuRegisterSet;
begin
result:=[RS_G1];
end;
function tsparcparamanager.get_volatile_registers_fpu(calloption : tproccalloption):TCpuRegisterSet;
begin
result:=[RS_F0..RS_F31];
end;
function TSparcParaManager.GetIntParaLoc(calloption : tproccalloption; nr : longint) : tparalocation;
begin
if nr<1 then
InternalError(2002100806);
FillChar(GetIntParaLoc,SizeOf(TParaLocation),0);
Dec(nr);
with GetIntParaLoc do
begin
{ The six first parameters are passed into registers }
if nr<6 then
begin
loc:=LOC_REGISTER;
register:=newreg(R_INTREGISTER,(RS_O0+nr),R_SUBWHOLE);
end
else
{ The other parameters are passed on the stack }
begin
loc:=LOC_REFERENCE;
reference.index:=NR_STACK_POINTER_REG;
reference.offset:=92+(nr-6)*4;
end;
size:=OS_INT;
end;
end;
procedure tsparcparamanager.allocparaloc(list: taasmoutput; const loc: tparalocation);
begin
if (loc.loc=LOC_REFERENCE) and
(loc.low_in_reg) then
cg.GetExplicitRegister(list,loc.lowreg);
inherited allocparaloc(list,loc);
end;
procedure tsparcparamanager.freeparaloc(list: taasmoutput; const loc: tparalocation);
begin
if (loc.loc=LOC_REFERENCE) and
(loc.low_in_reg) then
cg.UnGetRegister(list,loc.lowreg);
inherited freeparaloc(list,loc);
end;
function TSparcParaManager.create_paraloc_info(p:TAbstractProcDef; side: tcallercallee):longint;
var
nextintreg : tsuperregister;
stack_offset : longint;
hp : tparaitem;
is_64bit : boolean;
paraloc : tparalocation;
begin
nextintreg:=RS_O0;
{ Nested procedures have the parent framepoint in o0 }
if p.parast.symtablelevel>normal_function_level then
inc(NextIntReg);
stack_offset:=92;
hp:=TParaItem(p.para.First);
while assigned(hp) do
begin
fillchar(paraloc,sizeof(paraloc),0);
paraloc.Alignment:= std_param_align;
if push_addr_param(hp.paratyp,hp.paratype.def,p.proccalloption) or (hp.paratyp in [vs_var,vs_out]) then
paraloc.size:=OS_ADDR
else
begin
paraloc.size:=def_cgSize(hp.paratype.def);
if paraloc.size=OS_NO then
paraloc.size:=OS_ADDR;
end;
is_64bit:=(paraloc.size in [OS_64,OS_S64,OS_F64]);
if NextIntReg<=RS_O5-ord(is_64bit) then
begin
paraloc.loc:=LOC_REGISTER;
{ big endian }
if is_64bit then
begin
paraloc.registerhigh:=newreg(R_INTREGISTER,nextintreg,R_SUBWHOLE);
inc(nextintreg);
end;
paraloc.registerlow:=newreg(R_INTREGISTER,nextintreg,R_SUBWHOLE);
inc(NextIntReg);
end
else
begin
paraloc.loc:=LOC_REFERENCE;
{ Low part need to be in O5 if still available }
if NextIntReg<=RS_O5 then
begin
paraloc.low_in_reg:=true;
paraloc.lowreg:=newreg(R_INTREGISTER,nextintreg,R_SUBWHOLE);
end;
nextintreg:=RS_O6;
paraloc.reference.index:=NR_STACK_POINTER_REG;
paraloc.reference.offset:=stack_offset;
if is_64bit and
(not paraloc.low_in_reg) then
inc(stack_offset,8)
else
inc(stack_offset,4);
end;
hp.paraloc[side]:=paraloc;
if side = calleeside then
begin
{ update callee paraloc and use Ix registers instead
of Ox registers }
if hp.paraloc[calleeside].loc=LOC_REGISTER then
begin
{ big endian }
if is_64bit then
setsupreg(hp.paraloc[calleeside].registerhigh,getsupreg(hp.paraloc[calleeside].registerhigh)+(RS_I0-RS_O0));
setsupreg(hp.paraloc[calleeside].registerlow,getsupreg(hp.paraloc[calleeside].registerlow)+(RS_I0-RS_O0));
end
else
begin
if hp.paraloc[calleeside].low_in_reg then
setsupreg(hp.paraloc[calleeside].lowreg,getsupreg(hp.paraloc[calleeside].lowreg)+(RS_I0-RS_O0));
setsupreg(hp.paraloc[calleeside].reference.index,getsupreg(hp.paraloc[calleeside].reference.index)+(RS_I0-RS_O0));
end;
end;
hp:=TParaItem(hp.Next);
end;
{ Function return }
fillchar(paraloc,sizeof(tparalocation),0);
paraloc.size:=def_cgsize(p.rettype.def);
paraloc.Alignment:= std_param_align;
{ Return in FPU register? }
if p.rettype.def.deftype=floatdef then
begin
paraloc.loc:=LOC_FPUREGISTER;
paraloc.register:=NR_FPU_RESULT_REG;
end
else
{ Return in register? }
if not ret_in_param(p.rettype.def,p.proccalloption) then
begin
paraloc.loc:=LOC_REGISTER;
{$ifndef cpu64bit}
if paraloc.size in [OS_64,OS_S64] then
begin
if side=callerside then
paraloc.register64.reglo:=NR_FUNCTION_RESULT64_LOW_REG
else
paraloc.register64.reglo:=NR_FUNCTION_RETURN64_LOW_REG;
if side=callerside then
paraloc.register64.reghi:=NR_FUNCTION_RESULT64_HIGH_REG
else
paraloc.register64.reghi:=NR_FUNCTION_RETURN64_HIGH_REG;
end
else
{$endif cpu64bit}
begin
if side=callerside then
paraloc.register:=NR_FUNCTION_RESULT_REG
else
paraloc.register:=NR_FUNCTION_RETURN_REG;
end;
end
else
begin
paraloc.loc:=LOC_REFERENCE;
end;
p.funcret_paraloc[side]:=paraloc;
{ Size on stack is not used }
result:=0;
end;
procedure tsparcparamanager.splitparaloc64(const locpara:tparalocation;var loclopara,lochipara:tparalocation);
begin
{ Word 0 is in register, word 1 is in reference }
if (locpara.loc=LOC_REFERENCE) and locpara.low_in_reg then
begin
{ high }
lochipara:=locpara;
if locpara.size=OS_S64 then
lochipara.size:=OS_S32
else
lochipara.size:=OS_32;
lochipara.low_in_reg:=false;
{ low }
loclopara:=locpara;
loclopara.size:=OS_32;
loclopara.loc:=LOC_REGISTER;
loclopara.register:=locpara.lowreg;
end
else
inherited splitparaloc64(locpara,loclopara,lochipara);
end;
begin
ParaManager:=TSparcParaManager.create;
end.
{
$Log$
Revision 1.35 2003-11-10 19:05:50 peter
* fixed alias/colouring > 255
Revision 1.34 2003/10/24 11:25:32 mazen
-unused units removed from uses clause
*fix related to rg which was removed
Revision 1.33 2003/10/08 21:16:27 olle
* changed to symbolic const for alignment
+ alignment set for function result
Revision 1.32 2003/10/08 14:11:36 mazen
+ Alignement field added to TParaLocation (=4 as 32 bits archs)
Revision 1.31 2003/10/01 20:34:50 peter
* procinfo unit contains tprocinfo
* cginfo renamed to cgbase
* moved cgmessage to verbose
* fixed ppc and sparc compiles
Revision 1.30 2003/09/14 21:35:15 peter
* new volatile registers proc
Revision 1.29 2003/09/14 19:19:05 peter
* updates for new ra
Revision 1.28 2003/09/03 15:55:01 peter
* NEWRA branch merged
Revision 1.27.2.1 2003/08/31 21:08:16 peter
* first batch of sparc fixes
Revision 1.27 2003/08/11 21:18:20 peter
* start of sparc support for newra
Revision 1.26 2003/07/08 21:25:00 peter
* sparc fixes
Revision 1.25 2003/07/06 22:10:56 peter
* big endian first allocates high
Revision 1.24 2003/07/06 17:58:22 peter
* framepointer fixes for sparc
* parent framepointer code more generic
Revision 1.23 2003/07/05 20:11:41 jonas
* create_paraloc_info() is now called separately for the caller and
callee info
* fixed ppc cycle
Revision 1.22 2003/07/02 22:18:04 peter
* paraloc splitted in callerparaloc,calleeparaloc
* sparc calling convention updates
Revision 1.21 2003/06/17 16:36:59 peter
* freeintparaloc
Revision 1.20 2003/06/09 21:44:14 mazen
* fix compile problem related to modification
of the declareation of GetIntParaLoc in the
ancestor's declaration
Revision 1.19 2003/06/01 21:38:06 peter
* getregisterfpu size parameter added
* op_const_reg size parameter added
* sparc updates
Revision 1.18 2003/05/31 01:00:51 peter
* register fixes
Revision 1.17 2003/05/30 23:57:08 peter
* more sparc cleanup
* accumulator removed, splitted in function_return_reg (called) and
function_result_reg (caller)
Revision 1.16 2003/04/23 13:35:39 peter
* fix sparc compile
Revision 1.15 2003/04/23 12:35:35 florian
* fixed several issues with powerpc
+ applied a patch from Jonas for nested function calls (PowerPC only)
* ...
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
}
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