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https://gitlab.com/freepascal.org/fpc/source.git
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398 lines
13 KiB
ObjectPascal
398 lines
13 KiB
ObjectPascal
{
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Copyright (c) 2000-2002 by Florian Klaempfl
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Code generation for add nodes on 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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}
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unit ncpuadd;
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{$i fpcdefs.inc}
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interface
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uses
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node,ncgadd,cpubase;
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type
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tsparcaddnode = class(tcgaddnode)
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private
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function GetResFlags(unsigned:Boolean):TResFlags;
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function GetFPUResFlags:TResFlags;
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protected
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procedure second_addfloat;override;
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procedure second_cmpfloat;override;
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procedure second_cmpboolean;override;
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procedure second_cmpsmallset;override;
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procedure second_cmp64bit;override;
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procedure second_cmpordinal;override;
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end;
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implementation
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uses
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systems,
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cutils,verbose,
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paramgr,procinfo,
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aasmtai,aasmdata,aasmcpu,defutil,
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cgbase,cgcpu,cgutils,
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cpupara,
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ncon,nset,nadd,
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ncgutil,cgobj;
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{*****************************************************************************
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TSparcAddNode
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*****************************************************************************}
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function TSparcAddNode.GetResFlags(unsigned:Boolean):TResFlags;
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begin
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case NodeType of
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equaln:
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GetResFlags:=F_E;
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unequaln:
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GetResFlags:=F_NE;
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else
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if not(unsigned) then
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begin
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if nf_swapped in flags then
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case NodeType of
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ltn:
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GetResFlags:=F_G;
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lten:
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GetResFlags:=F_GE;
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gtn:
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GetResFlags:=F_L;
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gten:
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GetResFlags:=F_LE;
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end
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else
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case NodeType of
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ltn:
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GetResFlags:=F_L;
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lten:
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GetResFlags:=F_LE;
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gtn:
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GetResFlags:=F_G;
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gten:
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GetResFlags:=F_GE;
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end;
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end
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else
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begin
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if nf_swapped in Flags then
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case NodeType of
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ltn:
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GetResFlags:=F_A;
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lten:
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GetResFlags:=F_AE;
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gtn:
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GetResFlags:=F_B;
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gten:
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GetResFlags:=F_BE;
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end
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else
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case NodeType of
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ltn:
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GetResFlags:=F_B;
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lten:
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GetResFlags:=F_BE;
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gtn:
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GetResFlags:=F_A;
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gten:
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GetResFlags:=F_AE;
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end;
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end;
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end;
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end;
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function TSparcAddNode.GetFPUResFlags:TResFlags;
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begin
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case NodeType of
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equaln:
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result:=F_FE;
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unequaln:
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result:=F_FNE;
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else
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begin
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if nf_swapped in Flags then
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case NodeType of
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ltn:
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result:=F_FG;
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lten:
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result:=F_FGE;
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gtn:
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result:=F_FL;
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gten:
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result:=F_FLE;
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end
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else
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case NodeType of
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ltn:
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result:=F_FL;
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lten:
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result:=F_FLE;
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gtn:
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result:=F_FG;
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gten:
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result:=F_FGE;
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end;
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end;
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end;
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end;
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procedure tsparcaddnode.second_addfloat;
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var
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op : TAsmOp;
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begin
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pass_left_right;
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if (nf_swapped in flags) then
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swapleftright;
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{ force fpureg as location, left right doesn't matter
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as both will be in a fpureg }
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location_force_fpureg(current_asmdata.CurrAsmList,left.location,true);
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location_force_fpureg(current_asmdata.CurrAsmList,right.location,(left.location.loc<>LOC_CFPUREGISTER));
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location_reset(location,LOC_FPUREGISTER,def_cgsize(resultdef));
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if left.location.loc<>LOC_CFPUREGISTER then
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location.register:=left.location.register
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else
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location.register:=right.location.register;
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case nodetype of
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addn :
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begin
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if location.size=OS_F64 then
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op:=A_FADDd
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else
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op:=A_FADDs;
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end;
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muln :
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begin
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if location.size=OS_F64 then
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op:=A_FMULd
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else
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op:=A_FMULs;
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end;
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subn :
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begin
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if location.size=OS_F64 then
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op:=A_FSUBd
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else
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op:=A_FSUBs;
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end;
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slashn :
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begin
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if location.size=OS_F64 then
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op:=A_FDIVd
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else
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op:=A_FDIVs;
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end;
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else
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internalerror(200306014);
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end;
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current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg_reg(op,
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left.location.register,right.location.register,location.register));
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end;
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procedure tsparcaddnode.second_cmpfloat;
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var
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op : tasmop;
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begin
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pass_left_right;
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if (nf_swapped in flags) then
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swapleftright;
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{ force fpureg as location, left right doesn't matter
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as both will be in a fpureg }
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location_force_fpureg(current_asmdata.CurrAsmList,left.location,true);
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location_force_fpureg(current_asmdata.CurrAsmList,right.location,true);
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location_reset(location,LOC_FLAGS,OS_NO);
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location.resflags:=getfpuresflags;
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if left.location.size=OS_F64 then
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op:=A_FCMPd
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else
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op:=A_FCMPs;
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current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(op,
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left.location.register,right.location.register));
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{ Delay slot (can only contain integer operation) }
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current_asmdata.CurrAsmList.concat(taicpu.op_none(A_NOP));
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end;
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procedure tsparcaddnode.second_cmpboolean;
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begin
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pass_left_right;
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force_reg_left_right(true,true);
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if right.location.loc = LOC_CONSTANT then
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tcgsparc(cg).handle_reg_const_reg(current_asmdata.CurrAsmList,A_SUBcc,left.location.register,right.location.value,NR_G0)
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else
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current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg_reg(A_SUBcc,left.location.register,right.location.register,NR_G0));
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location_reset(location,LOC_FLAGS,OS_NO);
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location.resflags:=getresflags(true);
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end;
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procedure tsparcaddnode.second_cmpsmallset;
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var
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tmpreg : tregister;
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begin
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pass_left_right;
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location_reset(location,LOC_FLAGS,OS_NO);
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force_reg_left_right(false,false);
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case nodetype of
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equaln,
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unequaln:
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begin
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current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg_reg(A_SUBcc,left.location.register,right.location.register,NR_G0));
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location.resflags:=getresflags(true);
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end;
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lten,
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gten:
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begin
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if (not(nf_swapped in flags) and
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(nodetype = lten)) or
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((nf_swapped in flags) and
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(nodetype = gten)) then
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swapleftright;
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tmpreg:=cg.getintregister(current_asmdata.CurrAsmList,location.size);
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current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg_reg(A_AND,left.location.register,right.location.register,tmpreg));
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current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg_reg(A_SUBcc,tmpreg,right.location.register,NR_G0));
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location.resflags:=F_E;
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end;
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else
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internalerror(2012042701);
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end;
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end;
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procedure tsparcaddnode.second_cmp64bit;
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var
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unsigned : boolean;
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procedure firstjmp64bitcmp;
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var
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oldnodetype : tnodetype;
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begin
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{ the jump the sequence is a little bit hairy }
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case nodetype of
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ltn,gtn:
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begin
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cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(unsigned),current_procinfo.CurrTrueLabel);
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{ cheat a little bit for the negative test }
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toggleflag(nf_swapped);
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cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(unsigned),current_procinfo.CurrFalseLabel);
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toggleflag(nf_swapped);
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end;
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lten,gten:
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begin
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oldnodetype:=nodetype;
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if nodetype=lten then
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nodetype:=ltn
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else
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nodetype:=gtn;
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cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(unsigned),current_procinfo.CurrTrueLabel);
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{ cheat for the negative test }
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if nodetype=ltn then
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nodetype:=gtn
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else
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nodetype:=ltn;
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cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(unsigned),current_procinfo.CurrFalseLabel);
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nodetype:=oldnodetype;
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end;
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equaln:
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cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,current_procinfo.CurrFalseLabel);
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unequaln:
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cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,current_procinfo.CurrTrueLabel);
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end;
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end;
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procedure secondjmp64bitcmp;
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begin
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{ the jump the sequence is a little bit hairy }
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case nodetype of
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ltn,gtn,lten,gten:
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begin
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{ the comparisaion of the low dword have to be }
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{ always unsigned! }
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cg.a_jmp_flags(current_asmdata.CurrAsmList,getresflags(true),current_procinfo.CurrTrueLabel);
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cg.a_jmp_always(current_asmdata.CurrAsmList,current_procinfo.CurrFalseLabel);
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end;
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equaln:
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begin
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cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,current_procinfo.CurrFalseLabel);
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cg.a_jmp_always(current_asmdata.CurrAsmList,current_procinfo.CurrTrueLabel);
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end;
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unequaln:
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begin
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cg.a_jmp_flags(current_asmdata.CurrAsmList,F_NE,current_procinfo.CurrTrueLabel);
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cg.a_jmp_always(current_asmdata.CurrAsmList,current_procinfo.CurrFalseLabel);
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end;
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end;
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end;
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begin
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pass_left_right;
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force_reg_left_right(false,false);
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unsigned:=not(is_signed(left.resultdef)) or
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not(is_signed(right.resultdef));
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location_reset(location,LOC_JUMP,OS_NO);
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current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_CMP,left.location.register64.reghi,right.location.register64.reghi));
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firstjmp64bitcmp;
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current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg(A_CMP,left.location.register64.reglo,right.location.register64.reglo));
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secondjmp64bitcmp;
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end;
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procedure tsparcaddnode.second_cmpordinal;
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var
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unsigned : boolean;
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begin
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pass_left_right;
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force_reg_left_right(true,true);
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unsigned:=not(is_signed(left.resultdef)) or
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not(is_signed(right.resultdef));
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if right.location.loc = LOC_CONSTANT then
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tcgsparc(cg).handle_reg_const_reg(current_asmdata.CurrAsmList,A_SUBcc,left.location.register,right.location.value,NR_G0)
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else
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current_asmdata.CurrAsmList.concat(taicpu.op_reg_reg_reg(A_SUBcc,left.location.register,right.location.register,NR_G0));
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location_reset(location,LOC_FLAGS,OS_NO);
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location.resflags:=getresflags(unsigned);
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end;
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begin
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caddnode:=tsparcaddnode;
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end.
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