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104 lines
3.7 KiB
ObjectPascal
104 lines
3.7 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl
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Calling conventions for the SPARC
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*****************************************************************************}
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unit sppara;
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{$i fpcdefs.inc}
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interface
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uses
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globtype,
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cclasses,
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aasmtai,aasmdata,
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cpubase,cpuinfo,
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symconst,symbase,symsym,symtype,symdef,paramgr,parabase,cgbase,cgutils;
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type
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tsparcparamanager=class(TParaManager)
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function get_volatile_registers_int(calloption : tproccalloption):TCpuRegisterSet;override;
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function get_volatile_registers_fpu(calloption : tproccalloption):TCpuRegisterSet;override;
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function create_paraloc_info(p : TAbstractProcDef; side: tcallercallee):longint;override;
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function create_varargs_paraloc_info(p : TAbstractProcDef; varargspara:tvarargsparalist):longint;override;
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procedure create_paraloc_info_intern(p : tabstractprocdef; side: tcallercallee; paras: tparalist;
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var curintreg: longint; curfloatreg: tsuperregister; var cur_stack_offset: aword);virtual;abstract;
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end;
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type
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tparasupregs = array[0..5] of tsuperregister;
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pparasupregs = ^tparasupregs;
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const
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paraoutsupregs : tparasupregs = (RS_O0,RS_O1,RS_O2,RS_O3,RS_O4,RS_O5);
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parainsupregs : tparasupregs = (RS_I0,RS_I1,RS_I2,RS_I3,RS_I4,RS_I5);
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implementation
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uses
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cutils,verbose,systems,
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defutil,
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cgobj;
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function tsparcparamanager.get_volatile_registers_int(calloption : tproccalloption):TCpuRegisterSet;
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begin
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result:=[RS_G1,RS_O0,RS_O1,RS_O2,RS_O3,RS_O4,RS_O5,RS_O6,RS_O7];
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end;
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function tsparcparamanager.get_volatile_registers_fpu(calloption : tproccalloption):TCpuRegisterSet;
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begin
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result:=[RS_F0..RS_F31];
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end;
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function tsparcparamanager.create_varargs_paraloc_info(p : tabstractprocdef; varargspara:tvarargsparalist):longint;
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var
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curintreg : LongInt;
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curfloatreg : TSuperRegister;
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cur_stack_offset : aword;
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begin
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curintreg:=0;
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curfloatreg:=RS_F0;
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cur_stack_offset:=0;
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{ calculate the registers for the normal parameters }
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create_paraloc_info_intern(p,callerside,p.paras,curintreg,curfloatreg,cur_stack_offset);
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{ append the varargs }
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create_paraloc_info_intern(p,callerside,varargspara,curintreg,curfloatreg,cur_stack_offset);
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result:=cur_stack_offset;
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end;
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function tsparcparamanager.create_paraloc_info(p : tabstractprocdef; side: tcallercallee):longint;
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var
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curintreg : LongInt;
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curfloatreg : TSuperRegister;
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cur_stack_offset : aword;
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begin
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curintreg:=0;
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curfloatreg:=RS_F0;
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cur_stack_offset:=0;
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create_paraloc_info_intern(p,side,p.paras,curintreg,curfloatreg,cur_stack_offset);
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{ Create Function result paraloc }
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create_funcretloc_info(p,side);
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{ We need to return the size allocated on the stack }
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result:=cur_stack_offset;
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end;
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end.
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