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https://gitlab.com/freepascal.org/fpc/source.git
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1559 lines
58 KiB
ObjectPascal
1559 lines
58 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Florian Klaempfl
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This unit implements the code generator 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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}
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unit cgcpu;
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{$i fpcdefs.inc}
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interface
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uses
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globtype,parabase,
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cgbase,cgutils,cgobj,cg64f32,
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aasmbase,aasmtai,aasmdata,aasmcpu,
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cpubase,cpuinfo,
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node,symconst,SymType,symdef,
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rgcpu;
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type
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TCgSparc=class(tcg)
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protected
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function IsSimpleRef(const ref:treference):boolean;
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public
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procedure init_register_allocators;override;
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procedure done_register_allocators;override;
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function getfpuregister(list:TAsmList;size:Tcgsize):Tregister;override;
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{ sparc special, needed by cg64 }
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procedure make_simple_ref(list:TAsmList;var ref: treference);
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procedure handle_load_store(list:TAsmList;isstore:boolean;op: tasmop;reg:tregister;ref: treference);
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procedure handle_reg_const_reg(list:TAsmList;op:Tasmop;src:tregister;a:tcgint;dst:tregister);
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{ parameter }
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procedure a_loadfpu_reg_cgpara(list : TAsmList;size : tcgsize;const r : tregister;const paraloc : TCGPara);override;
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procedure a_loadfpu_ref_cgpara(list : TAsmList;size : tcgsize;const ref : treference;const paraloc : TCGPara);override;
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procedure a_call_name(list:TAsmList;const s:string; weak: boolean);override;
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procedure a_call_reg(list:TAsmList;Reg:TRegister);override;
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{ General purpose instructions }
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procedure maybeadjustresult(list: TAsmList; op: TOpCg; size: tcgsize; dst: tregister);
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procedure a_op_const_reg(list:TAsmList;Op:TOpCG;size:tcgsize;a:tcgint;reg:TRegister);override;
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procedure a_op_reg_reg(list:TAsmList;Op:TOpCG;size:TCGSize;src, dst:TRegister);override;
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procedure a_op_const_reg_reg(list:TAsmList;op:TOpCg;size:tcgsize;a:tcgint;src, dst:tregister);override;
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procedure a_op_reg_reg_reg(list:TAsmList;op:TOpCg;size:tcgsize;src1, src2, dst:tregister);override;
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procedure a_op_const_reg_reg_checkoverflow(list: TAsmList; op: TOpCg; size: tcgsize; a: tcgint; src, dst: tregister;setflags : boolean;var ovloc : tlocation);override;
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procedure a_op_reg_reg_reg_checkoverflow(list: TAsmList; op: TOpCg; size: tcgsize; src1, src2, dst: tregister;setflags : boolean;var ovloc : tlocation);override;
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{ move instructions }
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procedure a_load_const_reg(list:TAsmList;size:tcgsize;a:tcgint;reg:tregister);override;
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procedure a_load_const_ref(list:TAsmList;size:tcgsize;a:tcgint;const ref:TReference);override;
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procedure a_load_reg_ref(list:TAsmList;FromSize,ToSize:TCgSize;reg:TRegister;const ref:TReference);override;
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procedure a_load_ref_reg(list:TAsmList;FromSize,ToSize:TCgSize;const ref:TReference;reg:tregister);override;
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procedure a_load_reg_reg(list:TAsmList;FromSize,ToSize:TCgSize;reg1,reg2:tregister);override;
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procedure a_loadaddr_ref_reg(list:TAsmList;const ref:TReference;r:tregister);override;
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{ fpu move instructions }
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procedure a_loadfpu_reg_reg(list:TAsmList;fromsize,tosize:tcgsize;reg1, reg2:tregister);override;
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procedure a_loadfpu_ref_reg(list:TAsmList;fromsize,tosize:tcgsize;const ref:TReference;reg:tregister);override;
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procedure a_loadfpu_reg_ref(list:TAsmList;fromsize,tosize:tcgsize;reg:tregister;const ref:TReference);override;
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{ comparison operations }
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procedure a_cmp_const_reg_label(list:TAsmList;size:tcgsize;cmp_op:topcmp;a:tcgint;reg:tregister;l:tasmlabel);override;
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procedure a_cmp_reg_reg_label(list:TAsmList;size:tcgsize;cmp_op:topcmp;reg1,reg2:tregister;l:tasmlabel);override;
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procedure a_jmp_always(List:TAsmList;l:TAsmLabel);override;
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procedure a_jmp_name(list : TAsmList;const s : string);override;
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procedure a_jmp_cond(list:TAsmList;cond:TOpCmp;l:tasmlabel);{ override;}
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procedure a_jmp_flags(list:TAsmList;const f:TResFlags;l:tasmlabel);override;
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procedure g_flags2reg(list:TAsmList;Size:TCgSize;const f:tresflags;reg:TRegister);override;
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procedure g_overflowCheck(List:TAsmList;const Loc:TLocation;def:TDef);override;
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procedure g_overflowCheck_loc(List:TAsmList;const Loc:TLocation;def:TDef;ovloc : tlocation);override;
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procedure g_proc_entry(list : TAsmList;localsize : longint;nostackframe:boolean);override;
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procedure g_proc_exit(list : TAsmList;parasize:longint;nostackframe:boolean);override;
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procedure g_maybe_got_init(list: TAsmList); override;
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procedure g_restore_registers(list:TAsmList);override;
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procedure g_save_registers(list : TAsmList);override;
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procedure g_concatcopy(list : TAsmList;const source,dest : treference;len : tcgint);override;
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procedure g_concatcopy_unaligned(list : TAsmList;const source,dest : treference;len : tcgint);override;
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procedure g_concatcopy_move(list : TAsmList;const source,dest : treference;len : tcgint);
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procedure g_adjust_self_value(list:TAsmList;procdef: tprocdef;ioffset: tcgint);override;
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procedure g_intf_wrapper(list: TAsmList; procdef: tprocdef; const labelname: string; ioffset: longint);override;
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procedure g_external_wrapper(list : TAsmList; procdef: tprocdef; const externalname: string);override;
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{ Transform unsupported methods into Internal errors }
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procedure a_bit_scan_reg_reg(list: TAsmList; reverse: boolean; size: TCGSize; src, dst: TRegister); override;
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procedure g_stackpointer_alloc(list : TAsmList;localsize : longint);override;
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private
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use_unlimited_pic_mode : boolean;
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end;
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TCg64Sparc=class(tcg64f32)
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private
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procedure get_64bit_ops(op:TOpCG;var op1,op2:TAsmOp;checkoverflow : boolean);
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public
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procedure a_load64_reg_ref(list : TAsmList;reg : tregister64;const ref : treference);override;
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procedure a_load64_ref_reg(list : TAsmList;const ref : treference;reg : tregister64);override;
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procedure a_load64_ref_cgpara(list : TAsmList;const r : treference;const paraloc : tcgpara);override;
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procedure a_op64_reg_reg(list:TAsmList;op:TOpCG;size : tcgsize;regsrc,regdst:TRegister64);override;
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procedure a_op64_const_reg(list:TAsmList;op:TOpCG;size : tcgsize;value:int64;regdst:TRegister64);override;
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procedure a_op64_const_reg_reg(list: TAsmList;op:TOpCG;size : tcgsize;value : int64;regsrc,regdst : tregister64);override;
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procedure a_op64_reg_reg_reg(list: TAsmList;op:TOpCG;size : tcgsize;regsrc1,regsrc2,regdst : tregister64);override;
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procedure a_op64_const_reg_reg_checkoverflow(list: TAsmList;op:TOpCG;size : tcgsize;value : int64;regsrc,regdst : tregister64;setflags : boolean;var ovloc : tlocation);override;
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procedure a_op64_reg_reg_reg_checkoverflow(list: TAsmList;op:TOpCG;size : tcgsize;regsrc1,regsrc2,regdst : tregister64;setflags : boolean;var ovloc : tlocation);override;
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end;
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procedure create_codegen;
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const
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TOpCG2AsmOp : array[topcg] of TAsmOp=(
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A_NONE,A_MOV,A_ADD,A_AND,A_UDIV,A_SDIV,A_SMUL,A_UMUL,A_NEG,A_NOT,A_OR,A_SRA,A_SLL,A_SRL,A_SUB,A_XOR,A_NONE,A_NONE
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);
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TOpCG2AsmOpWithFlags : array[topcg] of TAsmOp=(
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A_NONE,A_MOV,A_ADDcc,A_ANDcc,A_UDIVcc,A_SDIVcc,A_SMULcc,A_UMULcc,A_NEG,A_NOT,A_ORcc,A_SRA,A_SLL,A_SRL,A_SUBcc,A_XORcc,A_NONE,A_NONE
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);
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TOpCmp2AsmCond : array[topcmp] of TAsmCond=(C_NONE,
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C_E,C_G,C_L,C_GE,C_LE,C_NE,C_BE,C_B,C_AE,C_A
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);
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implementation
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uses
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globals,verbose,systems,cutils,
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paramgr,fmodule,
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symtable,symsym,
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tgobj,
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procinfo,cpupi;
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function TCgSparc.IsSimpleRef(const ref:treference):boolean;
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begin
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result :=not(assigned(ref.symbol))and
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(((ref.index = NR_NO) and
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(ref.offset >= simm13lo) and
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(ref.offset <= simm13hi)) or
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((ref.index <> NR_NO) and
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(ref.offset = 0)));
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end;
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procedure tcgsparc.make_simple_ref(list:TAsmList;var ref: treference);
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var
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href: treference;
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hreg,hreg2: tregister;
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begin
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if (ref.refaddr<>addr_no) then
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InternalError(2013022802);
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if (ref.base=NR_NO) then
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begin
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ref.base:=ref.index;
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ref.index:=NR_NO;
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end;
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if IsSimpleRef(ref) then
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exit;
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if (ref.symbol=nil) then
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begin
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hreg:=getintregister(list,OS_INT);
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if (ref.index=NR_NO) then
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a_load_const_reg(list,OS_INT,ref.offset,hreg)
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else
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begin
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if (ref.offset<simm13lo) or (ref.offset>simm13hi-sizeof(pint)) then
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begin
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a_load_const_reg(list,OS_INT,ref.offset,hreg);
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list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg,ref.index,hreg));
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end
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else
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list.concat(taicpu.op_reg_const_reg(A_ADD,ref.index,ref.offset,hreg));
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end;
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if (ref.base=NR_NO) then
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ref.base:=hreg
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else
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ref.index:=hreg;
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ref.offset:=0;
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exit;
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end;
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reference_reset_symbol(href,ref.symbol,ref.offset,ref.alignment);
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hreg:=getintregister(list,OS_INT);
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if not (cs_create_pic in current_settings.moduleswitches) then
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begin
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{ absolute loads allow any offset to be encoded into relocation }
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href.refaddr:=addr_high;
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list.concat(taicpu.op_ref_reg(A_SETHI,href,hreg));
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if (ref.base=NR_NO) and (ref.index=NR_NO) then
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begin
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ref.base:=hreg;
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ref.refaddr:=addr_low;
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exit;
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end;
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{ base present -> load the entire address and use it as index }
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href.refaddr:=addr_low;
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list.concat(taicpu.op_reg_ref_reg(A_OR,hreg,href,hreg));
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ref.symbol:=nil;
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ref.offset:=0;
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if (ref.index<>NR_NO) then
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list.concat(taicpu.op_reg_reg_reg(A_ADD,ref.index,hreg,hreg));
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ref.index:=hreg;
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end
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else
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begin
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include(current_procinfo.flags,pi_needs_got);
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href.offset:=0;
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if use_unlimited_pic_mode then
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begin
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href.refaddr:=addr_high;
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list.concat(taicpu.op_ref_reg(A_SETHI,href,hreg));
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href.refaddr:=addr_low;
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list.concat(taicpu.op_reg_ref_reg(A_OR,hreg,href,hreg));
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reference_reset_base(href,hreg,0,sizeof(pint));
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href.index:=current_procinfo.got;
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end
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else
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begin
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href.base:=current_procinfo.got;
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href.refaddr:=addr_pic;
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end;
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list.concat(taicpu.op_ref_reg(A_LD,href,hreg));
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ref.symbol:=nil;
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{ hreg now holds symbol address. Add remaining members. }
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if (ref.offset>=simm13lo) and (ref.offset<=simm13hi-sizeof(pint)) then
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begin
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if (ref.base=NR_NO) then
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ref.base:=hreg
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else
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begin
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if (ref.offset<>0) then
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list.concat(taicpu.op_reg_const_reg(A_ADD,hreg,ref.offset,hreg));
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if (ref.index<>NR_NO) then
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list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg,ref.index,hreg));
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ref.index:=hreg;
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ref.offset:=0;
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end;
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end
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else { large offset, need another register to deal with it }
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begin
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hreg2:=getintregister(list,OS_INT);
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a_load_const_reg(list,OS_INT,ref.offset,hreg2);
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if (ref.index<>NR_NO) then
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list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg2,ref.index,hreg2));
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if (ref.base<>NR_NO) then
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list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg2,ref.base,hreg2));
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ref.base:=hreg;
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ref.index:=hreg2;
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ref.offset:=0;
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end;
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end;
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end;
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procedure tcgsparc.handle_load_store(list:TAsmList;isstore:boolean;op: tasmop;reg:tregister;ref: treference);
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begin
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make_simple_ref(list,ref);
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if isstore then
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list.concat(taicpu.op_reg_ref(op,reg,ref))
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else
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list.concat(taicpu.op_ref_reg(op,ref,reg));
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end;
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procedure tcgsparc.handle_reg_const_reg(list:TAsmList;op:Tasmop;src:tregister;a:tcgint;dst:tregister);
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var
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tmpreg : tregister;
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begin
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if (a<simm13lo) or
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(a>simm13hi) then
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begin
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tmpreg:=GetIntRegister(list,OS_INT);
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a_load_const_reg(list,OS_INT,a,tmpreg);
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list.concat(taicpu.op_reg_reg_reg(op,src,tmpreg,dst));
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end
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else
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list.concat(taicpu.op_reg_const_reg(op,src,a,dst));
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end;
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{****************************************************************************
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Assembler code
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****************************************************************************}
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procedure Tcgsparc.init_register_allocators;
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begin
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inherited init_register_allocators;
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rg[R_INTREGISTER]:=Trgcpu.create(R_INTREGISTER,R_SUBD,
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[RS_O0,RS_O1,RS_O2,RS_O3,RS_O4,RS_O5,RS_O7,
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RS_L0,RS_L1,RS_L2,RS_L3,RS_L4,RS_L5,RS_L6,RS_L7,
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RS_I0,RS_I1,RS_I2,RS_I3,RS_I4,RS_I5],
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first_int_imreg,[]);
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rg[R_FPUREGISTER]:=trgcpu.create(R_FPUREGISTER,R_SUBFS,
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[RS_F0,RS_F1,RS_F2,RS_F3,RS_F4,RS_F5,RS_F6,RS_F7,
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RS_F8,RS_F9,RS_F10,RS_F11,RS_F12,RS_F13,RS_F14,RS_F15,
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RS_F16,RS_F17,RS_F18,RS_F19,RS_F20,RS_F21,RS_F22,RS_F23,
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RS_F24,RS_F25,RS_F26,RS_F27,RS_F28,RS_F29,RS_F30,RS_F31],
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first_fpu_imreg,[]);
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{ needs at least one element for rgobj not to crash }
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rg[R_MMREGISTER]:=trgcpu.create(R_MMREGISTER,R_SUBNONE,
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[RS_L0],first_mm_imreg,[]);
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end;
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procedure Tcgsparc.done_register_allocators;
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begin
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rg[R_INTREGISTER].free;
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rg[R_FPUREGISTER].free;
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rg[R_MMREGISTER].free;
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inherited done_register_allocators;
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end;
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function tcgsparc.getfpuregister(list:TAsmList;size:Tcgsize):Tregister;
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begin
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if size=OS_F64 then
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result:=rg[R_FPUREGISTER].getregister(list,R_SUBFD)
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else
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result:=rg[R_FPUREGISTER].getregister(list,R_SUBFS);
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end;
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procedure tcgsparc.a_loadfpu_ref_cgpara(list : TAsmList;size : tcgsize;const ref : treference;const paraloc : TCGPara);
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var
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href,href2 : treference;
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hloc : pcgparalocation;
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begin
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href:=ref;
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hloc:=paraloc.location;
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while assigned(hloc) do
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begin
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paramanager.allocparaloc(list,hloc);
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case hloc^.loc of
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LOC_REGISTER,LOC_CREGISTER :
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a_load_ref_reg(list,hloc^.size,hloc^.size,href,hloc^.register);
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LOC_REFERENCE :
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begin
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reference_reset_base(href2,hloc^.reference.index,hloc^.reference.offset,paraloc.alignment);
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a_load_ref_ref(list,hloc^.size,hloc^.size,href,href2);
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end;
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LOC_FPUREGISTER,LOC_CFPUREGISTER :
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a_loadfpu_ref_reg(list,hloc^.size,hloc^.size,href,hloc^.register);
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else
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internalerror(200408241);
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end;
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inc(href.offset,tcgsize2size[hloc^.size]);
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hloc:=hloc^.next;
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end;
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end;
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procedure tcgsparc.a_loadfpu_reg_cgpara(list : TAsmList;size : tcgsize;const r : tregister;const paraloc : TCGPara);
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var
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href : treference;
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begin
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{ happens for function result loc }
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if paraloc.location^.loc in [LOC_FPUREGISTER,LOC_CFPUREGISTER] then
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begin
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paraloc.check_simple_location;
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paramanager.allocparaloc(list,paraloc.location);
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a_loadfpu_reg_reg(list,size,paraloc.location^.size,r,paraloc.location^.register);
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end
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else
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begin
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tg.GetTemp(list,TCGSize2Size[size],TCGSize2Size[size],tt_normal,href);
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a_loadfpu_reg_ref(list,size,size,r,href);
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a_loadfpu_ref_cgpara(list,size,href,paraloc);
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tg.Ungettemp(list,href);
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end;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_call_name(list:TAsmList;const s:string; weak: boolean);
|
|
begin
|
|
if not weak then
|
|
list.concat(taicpu.op_sym(A_CALL,current_asmdata.RefAsmSymbol(s)))
|
|
else
|
|
list.concat(taicpu.op_sym(A_CALL,current_asmdata.WeakRefAsmSymbol(s)));
|
|
{ Delay slot }
|
|
list.concat(taicpu.op_none(A_NOP));
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_call_reg(list:TAsmList;Reg:TRegister);
|
|
begin
|
|
list.concat(taicpu.op_reg(A_CALL,reg));
|
|
{ Delay slot }
|
|
list.concat(taicpu.op_none(A_NOP));
|
|
end;
|
|
|
|
|
|
{********************** load instructions ********************}
|
|
|
|
procedure TCgSparc.a_load_const_reg(list : TAsmList;size : TCGSize;a : tcgint;reg : TRegister);
|
|
begin
|
|
{ we don't use the set instruction here because it could be evalutated to two
|
|
instructions which would cause problems with the delay slot (FK) }
|
|
if (a=0) then
|
|
list.concat(taicpu.op_reg(A_CLR,reg))
|
|
else if (a>=simm13lo) and (a<=simm13hi) then
|
|
list.concat(taicpu.op_const_reg(A_MOV,a,reg))
|
|
else
|
|
begin
|
|
list.concat(taicpu.op_const_reg(A_SETHI,aint(a) shr 10,reg));
|
|
if (aint(a) and aint($3ff))<>0 then
|
|
list.concat(taicpu.op_reg_const_reg(A_OR,reg,aint(a) and aint($3ff),reg));
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_load_const_ref(list : TAsmList;size : tcgsize;a : tcgint;const ref : TReference);
|
|
begin
|
|
if a=0 then
|
|
a_load_reg_ref(list,size,size,NR_G0,ref)
|
|
else
|
|
inherited a_load_const_ref(list,size,a,ref);
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_load_reg_ref(list:TAsmList;FromSize,ToSize:TCGSize;reg:tregister;const Ref:TReference);
|
|
var
|
|
op : tasmop;
|
|
begin
|
|
if (TCGSize2Size[fromsize] >= TCGSize2Size[tosize]) then
|
|
fromsize := tosize;
|
|
if (ref.alignment<>0) and
|
|
(ref.alignment<tcgsize2size[tosize]) then
|
|
begin
|
|
a_load_reg_ref_unaligned(list,FromSize,ToSize,reg,ref);
|
|
end
|
|
else
|
|
begin
|
|
case tosize of
|
|
{ signed integer registers }
|
|
OS_8,
|
|
OS_S8:
|
|
Op:=A_STB;
|
|
OS_16,
|
|
OS_S16:
|
|
Op:=A_STH;
|
|
OS_32,
|
|
OS_S32:
|
|
Op:=A_ST;
|
|
else
|
|
InternalError(2002122100);
|
|
end;
|
|
handle_load_store(list,true,op,reg,ref);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_load_ref_reg(list:TAsmList;FromSize,ToSize:TCgSize;const ref:TReference;reg:tregister);
|
|
var
|
|
op : tasmop;
|
|
begin
|
|
if (TCGSize2Size[fromsize] >= TCGSize2Size[tosize]) then
|
|
fromsize := tosize;
|
|
if (ref.alignment<>0) and
|
|
(ref.alignment<tcgsize2size[fromsize]) then
|
|
begin
|
|
a_load_ref_reg_unaligned(list,FromSize,ToSize,ref,reg);
|
|
end
|
|
else
|
|
begin
|
|
case fromsize of
|
|
OS_S8:
|
|
Op:=A_LDSB;{Load Signed Byte}
|
|
OS_8:
|
|
Op:=A_LDUB;{Load Unsigned Byte}
|
|
OS_S16:
|
|
Op:=A_LDSH;{Load Signed Halfword}
|
|
OS_16:
|
|
Op:=A_LDUH;{Load Unsigned Halfword}
|
|
OS_S32,
|
|
OS_32:
|
|
Op:=A_LD;{Load Word}
|
|
OS_S64,
|
|
OS_64:
|
|
Op:=A_LDD;{Load a Long Word}
|
|
else
|
|
InternalError(2002122101);
|
|
end;
|
|
handle_load_store(list,false,op,reg,ref);
|
|
if (fromsize=OS_S8) and
|
|
(tosize=OS_16) then
|
|
a_load_reg_reg(list,fromsize,tosize,reg,reg);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_load_reg_reg(list:TAsmList;fromsize,tosize:tcgsize;reg1,reg2:tregister);
|
|
var
|
|
instr : taicpu;
|
|
begin
|
|
if (tcgsize2size[fromsize] > tcgsize2size[tosize]) or
|
|
((tcgsize2size[fromsize] = tcgsize2size[tosize]) and
|
|
(fromsize <> tosize)) or
|
|
{ needs to mask out the sign in the top 16 bits }
|
|
((fromsize = OS_S8) and
|
|
(tosize = OS_16)) then
|
|
case tosize of
|
|
OS_8 :
|
|
list.concat(taicpu.op_reg_const_reg(A_AND,reg1,$ff,reg2));
|
|
OS_16 :
|
|
begin
|
|
list.concat(taicpu.op_reg_const_reg(A_SLL,reg1,16,reg2));
|
|
list.concat(taicpu.op_reg_const_reg(A_SRL,reg2,16,reg2));
|
|
end;
|
|
OS_32,
|
|
OS_S32 :
|
|
begin
|
|
instr:=taicpu.op_reg_reg(A_MOV,reg1,reg2);
|
|
list.Concat(instr);
|
|
{ Notify the register allocator that we have written a move instruction so
|
|
it can try to eliminate it. }
|
|
add_move_instruction(instr);
|
|
end;
|
|
OS_S8 :
|
|
begin
|
|
list.concat(taicpu.op_reg_const_reg(A_SLL,reg1,24,reg2));
|
|
list.concat(taicpu.op_reg_const_reg(A_SRA,reg2,24,reg2));
|
|
end;
|
|
OS_S16 :
|
|
begin
|
|
list.concat(taicpu.op_reg_const_reg(A_SLL,reg1,16,reg2));
|
|
list.concat(taicpu.op_reg_const_reg(A_SRA,reg2,16,reg2));
|
|
end;
|
|
else
|
|
internalerror(2002090901);
|
|
end
|
|
else
|
|
begin
|
|
instr:=taicpu.op_reg_reg(A_MOV,reg1,reg2);
|
|
list.Concat(instr);
|
|
{ Notify the register allocator that we have written a move instruction so
|
|
it can try to eliminate it. }
|
|
add_move_instruction(instr);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_loadaddr_ref_reg(list : TAsmList;const ref : TReference;r : tregister);
|
|
var
|
|
href: treference;
|
|
hreg: tregister;
|
|
begin
|
|
if (ref.base=NR_NO) and (ref.index<>NR_NO) then
|
|
internalerror(200306171);
|
|
|
|
if (ref.symbol=nil) then
|
|
begin
|
|
if (ref.base<>NR_NO) then
|
|
begin
|
|
if (ref.offset<simm13lo) or (ref.offset>simm13hi) then
|
|
begin
|
|
hreg:=getintregister(list,OS_INT);
|
|
a_load_const_reg(list,OS_INT,ref.offset,hreg);
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg,ref.base,r));
|
|
if (ref.index<>NR_NO) then
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,r,ref.index,r));
|
|
end
|
|
else if (ref.offset<>0) then
|
|
begin
|
|
list.concat(taicpu.op_reg_const_reg(A_ADD,ref.base,ref.offset,r));
|
|
if (ref.index<>NR_NO) then
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,r,ref.index,r));
|
|
end
|
|
else if (ref.index<>NR_NO) then
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,ref.base,ref.index,r))
|
|
else
|
|
a_load_reg_reg(list,OS_INT,OS_INT,ref.base,r); { (try to) emit optimizable move }
|
|
end
|
|
else
|
|
a_load_const_reg(list,OS_INT,ref.offset,r);
|
|
exit;
|
|
end;
|
|
|
|
reference_reset_symbol(href,ref.symbol,ref.offset,ref.alignment);
|
|
if (cs_create_pic in current_settings.moduleswitches) then
|
|
begin
|
|
include(current_procinfo.flags,pi_needs_got);
|
|
href.offset:=0;
|
|
if use_unlimited_pic_mode then
|
|
begin
|
|
href.refaddr:=addr_high;
|
|
list.concat(taicpu.op_ref_reg(A_SETHI,href,r));
|
|
href.refaddr:=addr_low;
|
|
list.concat(taicpu.op_reg_ref_reg(A_OR,r,href,r));
|
|
reference_reset_base(href,r,0,sizeof(pint));
|
|
href.index:=current_procinfo.got;
|
|
end
|
|
else
|
|
begin
|
|
href.base:=current_procinfo.got;
|
|
href.refaddr:=addr_pic; { should it be done THAT way?? }
|
|
end;
|
|
{ load contents of GOT slot }
|
|
list.concat(taicpu.op_ref_reg(A_LD,href,r));
|
|
{ add original base/index, if any }
|
|
if (ref.base<>NR_NO) then
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,r,ref.base,r));
|
|
if (ref.index<>NR_NO) then
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,r,ref.index,r));
|
|
{ finally, add offset }
|
|
if (ref.offset<simm13lo) or (ref.offset>simm13hi) then
|
|
begin
|
|
hreg:=getintregister(list,OS_INT);
|
|
a_load_const_reg(list,OS_INT,ref.offset,hreg);
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg,r,r));
|
|
end
|
|
else if (ref.offset<>0) then
|
|
list.concat(taicpu.op_reg_const_reg(A_ADD,r,ref.offset,r));
|
|
end
|
|
else
|
|
begin
|
|
{ load symbol+offset }
|
|
href.refaddr:=addr_high;
|
|
list.concat(taicpu.op_ref_reg(A_SETHI,href,r));
|
|
href.refaddr:=addr_low;
|
|
list.concat(taicpu.op_reg_ref_reg(A_OR,r,href,r));
|
|
{ add original base/index, if any }
|
|
if (ref.base<>NR_NO) then
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,r,ref.base,r));
|
|
if (ref.index<>NR_NO) then
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,r,ref.index,r));
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_loadfpu_reg_reg(list:TAsmList;fromsize,tosize:tcgsize;reg1, reg2:tregister);
|
|
const
|
|
FpuMovInstr : Array[OS_F32..OS_F64,OS_F32..OS_F64] of TAsmOp =
|
|
((A_FMOVS,A_FSTOD),(A_FDTOS,A_FMOVD));
|
|
var
|
|
op: TAsmOp;
|
|
instr : taicpu;
|
|
begin
|
|
op:=fpumovinstr[fromsize,tosize];
|
|
instr:=taicpu.op_reg_reg(op,reg1,reg2);
|
|
list.Concat(instr);
|
|
{ Notify the register allocator that we have written a move instruction so
|
|
it can try to eliminate it. }
|
|
if (op = A_FMOVS) or
|
|
(op = A_FMOVD) then
|
|
add_move_instruction(instr);
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_loadfpu_ref_reg(list:TAsmList;fromsize,tosize:tcgsize;const ref:TReference;reg:tregister);
|
|
const
|
|
FpuLoadInstr : Array[OS_F32..OS_F64] of TAsmOp =
|
|
(A_LDF,A_LDDF);
|
|
var
|
|
tmpreg: tregister;
|
|
begin
|
|
tmpreg:=NR_NO;
|
|
if (fromsize<>tosize) then
|
|
begin
|
|
tmpreg:=reg;
|
|
reg:=getfpuregister(list,fromsize);
|
|
end;
|
|
handle_load_store(list,false,fpuloadinstr[fromsize],reg,ref);
|
|
if (fromsize<>tosize) then
|
|
a_loadfpu_reg_reg(list,fromsize,tosize,reg,tmpreg);
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_loadfpu_reg_ref(list:TAsmList;fromsize,tosize:tcgsize;reg:tregister;const ref:TReference);
|
|
const
|
|
FpuLoadInstr : Array[OS_F32..OS_F64] of TAsmOp =
|
|
(A_STF,A_STDF);
|
|
var
|
|
tmpreg: tregister;
|
|
begin
|
|
if (fromsize<>tosize) then
|
|
begin
|
|
tmpreg:=getfpuregister(list,tosize);
|
|
a_loadfpu_reg_reg(list,fromsize,tosize,reg,tmpreg);
|
|
reg:=tmpreg;
|
|
end;
|
|
handle_load_store(list,true,fpuloadinstr[tosize],reg,ref);
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.maybeadjustresult(list: TAsmList; op: TOpCg; size: tcgsize; dst: tregister);
|
|
const
|
|
overflowops = [OP_MUL,OP_SHL,OP_ADD,OP_SUB,OP_NOT,OP_NEG];
|
|
begin
|
|
if (op in overflowops) and
|
|
(size in [OS_8,OS_S8,OS_16,OS_S16]) then
|
|
a_load_reg_reg(list,OS_32,size,dst,dst);
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_op_const_reg(list:TAsmList;Op:TOpCG;size:tcgsize;a:tcgint;reg:TRegister);
|
|
begin
|
|
optimize_op_const(size,op,a);
|
|
case op of
|
|
OP_NONE:
|
|
exit;
|
|
|
|
OP_MOVE:
|
|
a_load_const_reg(list,size,a,reg);
|
|
|
|
OP_NEG,OP_NOT:
|
|
internalerror(200306011);
|
|
else
|
|
a_op_const_reg_reg(list,op,size,a,reg,reg);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_op_reg_reg(list:TAsmList;Op:TOpCG;size:TCGSize;src, dst:TRegister);
|
|
var
|
|
a : aint;
|
|
begin
|
|
Case Op of
|
|
OP_NEG :
|
|
list.concat(taicpu.op_reg_reg(TOpCG2AsmOp[op],src,dst));
|
|
OP_NOT :
|
|
begin
|
|
case size of
|
|
OS_8 :
|
|
a:=aint($ffffff00);
|
|
OS_16 :
|
|
a:=aint($ffff0000);
|
|
else
|
|
a:=0;
|
|
end;
|
|
handle_reg_const_reg(list,A_XNOR,src,a,dst);
|
|
end;
|
|
else
|
|
list.concat(taicpu.op_reg_reg_reg(TOpCG2AsmOp[op],dst,src,dst));
|
|
end;
|
|
maybeadjustresult(list,op,size,dst);
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_op_const_reg_reg(list:TAsmList;op:TOpCg;size:tcgsize;a:tcgint;src, dst:tregister);
|
|
var
|
|
l: TLocation;
|
|
begin
|
|
a_op_const_reg_reg_checkoverflow(list,op,size,a,src,dst,false,l);
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_op_reg_reg_reg(list:TAsmList;op:TOpCg;size:tcgsize;src1, src2, dst:tregister);
|
|
begin
|
|
if (TOpcg2AsmOp[op]=A_NONE) then
|
|
InternalError(2013070305);
|
|
if (op=OP_SAR) then
|
|
begin
|
|
if (size in [OS_S8,OS_S16]) then
|
|
begin
|
|
{ Sign-extend before shifting }
|
|
list.concat(taicpu.op_reg_const_reg(A_SLL,src2,32-(tcgsize2size[size]*8),dst));
|
|
list.concat(taicpu.op_reg_const_reg(A_SRA,dst,32-(tcgsize2size[size]*8),dst));
|
|
src2:=dst;
|
|
end
|
|
else if not (size in [OS_32,OS_S32]) then
|
|
InternalError(2013070306);
|
|
end;
|
|
list.concat(taicpu.op_reg_reg_reg(TOpCG2AsmOp[op],src2,src1,dst));
|
|
maybeadjustresult(list,op,size,dst);
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.a_op_const_reg_reg_checkoverflow(list: TAsmList; op: TOpCg; size: tcgsize; a: tcgint; src, dst: tregister;setflags : boolean;var ovloc : tlocation);
|
|
var
|
|
tmpreg1,tmpreg2 : tregister;
|
|
begin
|
|
ovloc.loc:=LOC_VOID;
|
|
optimize_op_const(size,op,a);
|
|
case op of
|
|
OP_NONE:
|
|
begin
|
|
a_load_reg_reg(list,size,size,src,dst);
|
|
exit;
|
|
end;
|
|
|
|
OP_MOVE:
|
|
begin
|
|
a_load_const_reg(list,size,a,dst);
|
|
exit;
|
|
end;
|
|
|
|
OP_SAR:
|
|
begin
|
|
if (size in [OS_S8,OS_S16]) then
|
|
begin
|
|
list.concat(taicpu.op_reg_const_reg(A_SLL,src,32-(tcgsize2size[size]*8),dst));
|
|
inc(a,32-tcgsize2size[size]*8);
|
|
src:=dst;
|
|
end
|
|
else if not (size in [OS_32,OS_S32]) then
|
|
InternalError(2013070303);
|
|
end;
|
|
end;
|
|
if setflags then
|
|
begin
|
|
handle_reg_const_reg(list,TOpCG2AsmOpWithFlags[op],src,a,dst);
|
|
case op of
|
|
OP_MUL:
|
|
begin
|
|
tmpreg1:=GetIntRegister(list,OS_INT);
|
|
list.concat(taicpu.op_reg_reg(A_MOV,NR_Y,tmpreg1));
|
|
list.concat(taicpu.op_reg_reg(A_CMP,NR_G0,tmpreg1));
|
|
ovloc.loc:=LOC_FLAGS;
|
|
ovloc.resflags:=F_NE;
|
|
end;
|
|
OP_IMUL:
|
|
begin
|
|
tmpreg1:=GetIntRegister(list,OS_INT);
|
|
tmpreg2:=GetIntRegister(list,OS_INT);
|
|
list.concat(taicpu.op_reg_reg(A_MOV,NR_Y,tmpreg1));
|
|
list.concat(taicpu.op_reg_const_reg(A_SRA,dst,31,tmpreg2));
|
|
list.concat(taicpu.op_reg_reg(A_CMP,tmpreg1,tmpreg2));
|
|
ovloc.loc:=LOC_FLAGS;
|
|
ovloc.resflags:=F_NE;
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
handle_reg_const_reg(list,TOpCG2AsmOp[op],src,a,dst);
|
|
maybeadjustresult(list,op,size,dst);
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.a_op_reg_reg_reg_checkoverflow(list: TAsmList; op: TOpCg; size: tcgsize; src1, src2, dst: tregister;setflags : boolean;var ovloc : tlocation);
|
|
var
|
|
tmpreg1,tmpreg2 : tregister;
|
|
begin
|
|
ovloc.loc:=LOC_VOID;
|
|
if setflags then
|
|
begin
|
|
list.concat(taicpu.op_reg_reg_reg(TOpCG2AsmOpWithFlags[op],src2,src1,dst));
|
|
case op of
|
|
OP_MUL:
|
|
begin
|
|
tmpreg1:=GetIntRegister(list,OS_INT);
|
|
list.concat(taicpu.op_reg_reg(A_MOV,NR_Y,tmpreg1));
|
|
list.concat(taicpu.op_reg_reg(A_CMP,NR_G0,tmpreg1));
|
|
ovloc.loc:=LOC_FLAGS;
|
|
ovloc.resflags:=F_NE;
|
|
end;
|
|
OP_IMUL:
|
|
begin
|
|
tmpreg1:=GetIntRegister(list,OS_INT);
|
|
tmpreg2:=GetIntRegister(list,OS_INT);
|
|
list.concat(taicpu.op_reg_reg(A_MOV,NR_Y,tmpreg1));
|
|
list.concat(taicpu.op_reg_const_reg(A_SRL,dst,31,tmpreg2));
|
|
list.concat(taicpu.op_reg_reg(A_CMP,tmpreg1,tmpreg2));
|
|
ovloc.loc:=LOC_FLAGS;
|
|
ovloc.resflags:=F_NE;
|
|
end;
|
|
end;
|
|
end
|
|
else
|
|
list.concat(taicpu.op_reg_reg_reg(TOpCG2AsmOp[op],src2,src1,dst));
|
|
maybeadjustresult(list,op,size,dst);
|
|
end;
|
|
|
|
|
|
|
|
{*************** compare instructructions ****************}
|
|
|
|
procedure TCgSparc.a_cmp_const_reg_label(list:TAsmList;size:tcgsize;cmp_op:topcmp;a:tcgint;reg:tregister;l:tasmlabel);
|
|
begin
|
|
if (a=0) then
|
|
list.concat(taicpu.op_reg_reg_reg(A_SUBcc,reg,NR_G0,NR_G0))
|
|
else
|
|
handle_reg_const_reg(list,A_SUBcc,reg,a,NR_G0);
|
|
a_jmp_cond(list,cmp_op,l);
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_cmp_reg_reg_label(list:TAsmList;size:tcgsize;cmp_op:topcmp;reg1,reg2:tregister;l:tasmlabel);
|
|
begin
|
|
list.concat(taicpu.op_reg_reg_reg(A_SUBcc,reg2,reg1,NR_G0));
|
|
a_jmp_cond(list,cmp_op,l);
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_jmp_always(List:TAsmList;l:TAsmLabel);
|
|
begin
|
|
List.Concat(TAiCpu.op_sym(A_BA,current_asmdata.RefAsmSymbol(l.name)));
|
|
{ Delay slot }
|
|
list.Concat(TAiCpu.Op_none(A_NOP));
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.a_jmp_name(list : TAsmList;const s : string);
|
|
begin
|
|
List.Concat(TAiCpu.op_sym(A_BA,current_asmdata.RefAsmSymbol(s)));
|
|
{ Delay slot }
|
|
list.Concat(TAiCpu.Op_none(A_NOP));
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_jmp_cond(list:TAsmList;cond:TOpCmp;l:TAsmLabel);
|
|
var
|
|
ai:TAiCpu;
|
|
begin
|
|
ai:=TAiCpu.Op_sym(A_Bxx,l);
|
|
ai.SetCondition(TOpCmp2AsmCond[cond]);
|
|
list.Concat(ai);
|
|
{ Delay slot }
|
|
list.Concat(TAiCpu.Op_none(A_NOP));
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.a_jmp_flags(list:TAsmList;const f:TResFlags;l:tasmlabel);
|
|
var
|
|
ai : taicpu;
|
|
begin
|
|
ai:=Taicpu.op_sym(A_Bxx,l);
|
|
ai.SetCondition(flags_to_cond(f));
|
|
list.Concat(ai);
|
|
{ Delay slot }
|
|
list.Concat(TAiCpu.Op_none(A_NOP));
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.g_flags2reg(list:TAsmList;Size:TCgSize;const f:tresflags;reg:TRegister);
|
|
var
|
|
hl : tasmlabel;
|
|
begin
|
|
current_asmdata.getjumplabel(hl);
|
|
a_load_const_reg(list,size,1,reg);
|
|
a_jmp_flags(list,f,hl);
|
|
a_load_const_reg(list,size,0,reg);
|
|
a_label(list,hl);
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.g_overflowCheck(List:TAsmList;const Loc:TLocation;def:TDef);
|
|
var
|
|
l : tlocation;
|
|
begin
|
|
l.loc:=LOC_VOID;
|
|
g_overflowCheck_loc(list,loc,def,l);
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.g_overflowCheck_loc(List:TAsmList;const Loc:TLocation;def:TDef;ovloc : tlocation);
|
|
var
|
|
hl : tasmlabel;
|
|
ai:TAiCpu;
|
|
hflags : tresflags;
|
|
begin
|
|
if not(cs_check_overflow in current_settings.localswitches) then
|
|
exit;
|
|
current_asmdata.getjumplabel(hl);
|
|
case ovloc.loc of
|
|
LOC_VOID:
|
|
begin
|
|
if not((def.typ=pointerdef) or
|
|
((def.typ=orddef) and
|
|
(torddef(def).ordtype in [u64bit,u16bit,u32bit,u8bit,uchar,
|
|
pasbool8,pasbool16,pasbool32,pasbool64]))) then
|
|
begin
|
|
ai:=TAiCpu.Op_sym(A_Bxx,hl);
|
|
ai.SetCondition(C_NO);
|
|
list.Concat(ai);
|
|
{ Delay slot }
|
|
list.Concat(TAiCpu.Op_none(A_NOP));
|
|
end
|
|
else
|
|
a_jmp_cond(list,OC_AE,hl);
|
|
end;
|
|
LOC_FLAGS:
|
|
begin
|
|
hflags:=ovloc.resflags;
|
|
inverse_flags(hflags);
|
|
cg.a_jmp_flags(list,hflags,hl);
|
|
end;
|
|
else
|
|
internalerror(200409281);
|
|
end;
|
|
|
|
a_call_name(list,'FPC_OVERFLOW',false);
|
|
a_label(list,hl);
|
|
end;
|
|
|
|
{ *********** entry/exit code and address loading ************ }
|
|
|
|
procedure TCgSparc.g_proc_entry(list : TAsmList;localsize : longint;nostackframe:boolean);
|
|
begin
|
|
if nostackframe then
|
|
exit;
|
|
{ Althogh the SPARC architecture require only word alignment, software
|
|
convention and the operating system require every stack frame to be double word
|
|
aligned }
|
|
LocalSize:=align(LocalSize,8);
|
|
{ Execute the SAVE instruction to get a new register window and create a new
|
|
stack frame. In the "SAVE %i6,size,%i6" the first %i6 is related to the state
|
|
before execution of the SAVE instrucion so it is the caller %i6, when the %i6
|
|
after execution of that instruction is the called function stack pointer}
|
|
{ constant can be 13 bit signed, since it's negative, size can be max. 4096 }
|
|
if LocalSize>4096 then
|
|
begin
|
|
a_load_const_reg(list,OS_ADDR,-LocalSize,NR_G1);
|
|
list.concat(Taicpu.Op_reg_reg_reg(A_SAVE,NR_STACK_POINTER_REG,NR_G1,NR_STACK_POINTER_REG));
|
|
end
|
|
else
|
|
list.concat(Taicpu.Op_reg_const_reg(A_SAVE,NR_STACK_POINTER_REG,-LocalSize,NR_STACK_POINTER_REG));
|
|
end;
|
|
|
|
procedure TCgSparc.g_maybe_got_init(list : TAsmList);
|
|
var
|
|
ref : treference;
|
|
hl : tasmlabel;
|
|
begin
|
|
if (cs_create_pic in current_settings.moduleswitches) and
|
|
((pi_needs_got in current_procinfo.flags) or
|
|
(current_procinfo.procdef.proctypeoption=potype_unitfinalize)) then
|
|
begin
|
|
current_asmdata.getjumplabel(hl);
|
|
list.concat(taicpu.op_sym(A_CALL,hl));
|
|
{ ABI recommends the following sequence:
|
|
1: call 2f
|
|
sethi %hi(_GLOBAL_OFFSET_TABLE_+(.-1b)), %l7
|
|
2: or %l7, %lo(_GLOBAL_OFFSET_TABLE_+(.-1b)), %l7
|
|
add %l7, %o7, %l7 }
|
|
reference_reset_symbol(ref,current_asmdata.RefAsmSymbol('_GLOBAL_OFFSET_TABLE_'),4,sizeof(pint));
|
|
ref.refaddr:=addr_high;
|
|
list.concat(taicpu.op_ref_reg(A_SETHI,ref,NR_L7));
|
|
cg.a_label(list,hl);
|
|
ref.refaddr:=addr_low;
|
|
ref.offset:=8;
|
|
list.concat(Taicpu.Op_reg_ref_reg(A_OR,NR_L7,ref,NR_L7));
|
|
list.concat(taicpu.op_reg_reg_reg(A_ADD,NR_L7,NR_O7,NR_L7));
|
|
{ allocate NR_L7, so reg.allocator does not see it as available }
|
|
list.concat(tai_regalloc.alloc(NR_L7,nil));
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.g_restore_registers(list:TAsmList);
|
|
begin
|
|
{ The sparc port uses the sparc standard calling convetions so this function has no used }
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.g_proc_exit(list : TAsmList;parasize:longint;nostackframe:boolean);
|
|
var
|
|
hr : treference;
|
|
begin
|
|
if paramanager.ret_in_param(current_procinfo.procdef.returndef,current_procinfo.procdef) then
|
|
begin
|
|
reference_reset(hr,sizeof(pint));
|
|
hr.offset:=12;
|
|
hr.refaddr:=addr_full;
|
|
if nostackframe then
|
|
begin
|
|
hr.base:=NR_O7;
|
|
list.concat(taicpu.op_ref_reg(A_JMPL,hr,NR_G0));
|
|
list.concat(Taicpu.op_none(A_NOP))
|
|
end
|
|
else
|
|
begin
|
|
{ We use trivial restore in the delay slot of the JMPL instruction, as we
|
|
already set result onto %i0 }
|
|
hr.base:=NR_I7;
|
|
list.concat(taicpu.op_ref_reg(A_JMPL,hr,NR_G0));
|
|
list.concat(Taicpu.op_none(A_RESTORE));
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
if nostackframe then
|
|
begin
|
|
{ Here we need to use RETL instead of RET so it uses %o7 }
|
|
list.concat(Taicpu.op_none(A_RETL));
|
|
list.concat(Taicpu.op_none(A_NOP))
|
|
end
|
|
else
|
|
begin
|
|
{ We use trivial restore in the delay slot of the JMPL instruction, as we
|
|
already set result onto %i0 }
|
|
list.concat(Taicpu.op_none(A_RET));
|
|
list.concat(Taicpu.op_none(A_RESTORE));
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.g_save_registers(list : TAsmList);
|
|
begin
|
|
{ The sparc port uses the sparc standard calling convetions so this function has no used }
|
|
end;
|
|
|
|
|
|
{ ************* concatcopy ************ }
|
|
|
|
procedure tcgsparc.g_concatcopy_move(list : TAsmList;const source,dest : treference;len : tcgint);
|
|
var
|
|
paraloc1,paraloc2,paraloc3 : TCGPara;
|
|
pd : tprocdef;
|
|
begin
|
|
pd:=search_system_proc('MOVE');
|
|
paraloc1.init;
|
|
paraloc2.init;
|
|
paraloc3.init;
|
|
paramanager.getintparaloc(pd,1,paraloc1);
|
|
paramanager.getintparaloc(pd,2,paraloc2);
|
|
paramanager.getintparaloc(pd,3,paraloc3);
|
|
a_load_const_cgpara(list,OS_SINT,len,paraloc3);
|
|
a_loadaddr_ref_cgpara(list,dest,paraloc2);
|
|
a_loadaddr_ref_cgpara(list,source,paraloc1);
|
|
paramanager.freecgpara(list,paraloc3);
|
|
paramanager.freecgpara(list,paraloc2);
|
|
paramanager.freecgpara(list,paraloc1);
|
|
alloccpuregisters(list,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
|
|
alloccpuregisters(list,R_FPUREGISTER,paramanager.get_volatile_registers_fpu(pocall_default));
|
|
a_call_name(list,'FPC_MOVE',false);
|
|
dealloccpuregisters(list,R_FPUREGISTER,paramanager.get_volatile_registers_fpu(pocall_default));
|
|
dealloccpuregisters(list,R_INTREGISTER,paramanager.get_volatile_registers_int(pocall_default));
|
|
paraloc3.done;
|
|
paraloc2.done;
|
|
paraloc1.done;
|
|
end;
|
|
|
|
|
|
procedure TCgSparc.g_concatcopy(list:TAsmList;const source,dest:treference;len:tcgint);
|
|
var
|
|
tmpreg1,
|
|
hreg,
|
|
countreg: TRegister;
|
|
src, dst: TReference;
|
|
lab: tasmlabel;
|
|
count, count2: aint;
|
|
|
|
function reference_is_reusable(const ref: treference): boolean;
|
|
begin
|
|
result:=(ref.base<>NR_NO) and (ref.index=NR_NO) and
|
|
(ref.symbol=nil) and
|
|
(ref.offset>=simm13lo) and (ref.offset+len<=simm13hi);
|
|
end;
|
|
|
|
begin
|
|
if len>high(longint) then
|
|
internalerror(2002072704);
|
|
{ anybody wants to determine a good value here :)? }
|
|
if len>100 then
|
|
g_concatcopy_move(list,source,dest,len)
|
|
else
|
|
begin
|
|
count:=len div 4;
|
|
if (count<=4) and reference_is_reusable(source) then
|
|
src:=source
|
|
else
|
|
begin
|
|
reference_reset_base(src,getintregister(list,OS_ADDR),0,sizeof(aint));
|
|
a_loadaddr_ref_reg(list,source,src.base);
|
|
end;
|
|
if (count<=4) and reference_is_reusable(dest) then
|
|
dst:=dest
|
|
else
|
|
begin
|
|
reference_reset_base(dst,getintregister(list,OS_ADDR),0,sizeof(aint));
|
|
a_loadaddr_ref_reg(list,dest,dst.base);
|
|
end;
|
|
{ generate a loop }
|
|
if count>4 then
|
|
begin
|
|
countreg:=GetIntRegister(list,OS_INT);
|
|
tmpreg1:=GetIntRegister(list,OS_INT);
|
|
a_load_const_reg(list,OS_INT,count,countreg);
|
|
current_asmdata.getjumplabel(lab);
|
|
a_label(list, lab);
|
|
list.concat(taicpu.op_ref_reg(A_LD,src,tmpreg1));
|
|
list.concat(taicpu.op_reg_ref(A_ST,tmpreg1,dst));
|
|
list.concat(taicpu.op_reg_const_reg(A_ADD,src.base,4,src.base));
|
|
list.concat(taicpu.op_reg_const_reg(A_ADD,dst.base,4,dst.base));
|
|
list.concat(taicpu.op_reg_const_reg(A_SUBcc,countreg,1,countreg));
|
|
a_jmp_cond(list,OC_NE,lab);
|
|
len := len mod 4;
|
|
end;
|
|
{ unrolled loop }
|
|
count:=len div 4;
|
|
if count>0 then
|
|
begin
|
|
tmpreg1:=GetIntRegister(list,OS_INT);
|
|
for count2 := 1 to count do
|
|
begin
|
|
list.concat(taicpu.op_ref_reg(A_LD,src,tmpreg1));
|
|
list.concat(taicpu.op_reg_ref(A_ST,tmpreg1,dst));
|
|
inc(src.offset,4);
|
|
inc(dst.offset,4);
|
|
end;
|
|
len := len mod 4;
|
|
end;
|
|
if (len and 4) <> 0 then
|
|
begin
|
|
hreg:=GetIntRegister(list,OS_INT);
|
|
a_load_ref_reg(list,OS_32,OS_32,src,hreg);
|
|
a_load_reg_ref(list,OS_32,OS_32,hreg,dst);
|
|
inc(src.offset,4);
|
|
inc(dst.offset,4);
|
|
end;
|
|
{ copy the leftovers }
|
|
if (len and 2) <> 0 then
|
|
begin
|
|
hreg:=GetIntRegister(list,OS_INT);
|
|
a_load_ref_reg(list,OS_16,OS_16,src,hreg);
|
|
a_load_reg_ref(list,OS_16,OS_16,hreg,dst);
|
|
inc(src.offset,2);
|
|
inc(dst.offset,2);
|
|
end;
|
|
if (len and 1) <> 0 then
|
|
begin
|
|
hreg:=GetIntRegister(list,OS_INT);
|
|
a_load_ref_reg(list,OS_8,OS_8,src,hreg);
|
|
a_load_reg_ref(list,OS_8,OS_8,hreg,dst);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.g_concatcopy_unaligned(list : TAsmList;const source,dest : treference;len : tcgint);
|
|
var
|
|
src, dst: TReference;
|
|
tmpreg1,
|
|
countreg: TRegister;
|
|
i : aint;
|
|
lab: tasmlabel;
|
|
begin
|
|
if len>31 then
|
|
g_concatcopy_move(list,source,dest,len)
|
|
else
|
|
begin
|
|
reference_reset(src,source.alignment);
|
|
reference_reset(dst,dest.alignment);
|
|
{ load the address of source into src.base }
|
|
src.base:=GetAddressRegister(list);
|
|
a_loadaddr_ref_reg(list,source,src.base);
|
|
{ load the address of dest into dst.base }
|
|
dst.base:=GetAddressRegister(list);
|
|
a_loadaddr_ref_reg(list,dest,dst.base);
|
|
{ generate a loop }
|
|
if len>4 then
|
|
begin
|
|
countreg:=GetIntRegister(list,OS_INT);
|
|
tmpreg1:=GetIntRegister(list,OS_INT);
|
|
a_load_const_reg(list,OS_INT,len,countreg);
|
|
current_asmdata.getjumplabel(lab);
|
|
a_label(list, lab);
|
|
list.concat(taicpu.op_ref_reg(A_LDUB,src,tmpreg1));
|
|
list.concat(taicpu.op_reg_ref(A_STB,tmpreg1,dst));
|
|
list.concat(taicpu.op_reg_const_reg(A_ADD,src.base,1,src.base));
|
|
list.concat(taicpu.op_reg_const_reg(A_ADD,dst.base,1,dst.base));
|
|
list.concat(taicpu.op_reg_const_reg(A_SUBcc,countreg,1,countreg));
|
|
a_jmp_cond(list,OC_NE,lab);
|
|
end
|
|
else
|
|
begin
|
|
{ unrolled loop }
|
|
tmpreg1:=GetIntRegister(list,OS_INT);
|
|
for i:=1 to len do
|
|
begin
|
|
list.concat(taicpu.op_ref_reg(A_LDUB,src,tmpreg1));
|
|
list.concat(taicpu.op_reg_ref(A_STB,tmpreg1,dst));
|
|
inc(src.offset);
|
|
inc(dst.offset);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.g_adjust_self_value(list:TAsmList;procdef: tprocdef;ioffset: tcgint);
|
|
begin
|
|
{ This method is integrated into g_intf_wrapper and shouldn't be called separately }
|
|
InternalError(2013020102);
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.g_intf_wrapper(list: TAsmList; procdef: tprocdef; const labelname: string; ioffset: longint);
|
|
var
|
|
make_global : boolean;
|
|
href : treference;
|
|
hsym : tsym;
|
|
paraloc : pcgparalocation;
|
|
begin
|
|
if not(procdef.proctypeoption in [potype_function,potype_procedure]) then
|
|
Internalerror(200006137);
|
|
if not assigned(procdef.struct) or
|
|
(procdef.procoptions*[po_classmethod, po_staticmethod,
|
|
po_methodpointer, po_interrupt, po_iocheck]<>[]) then
|
|
Internalerror(200006138);
|
|
if procdef.owner.symtabletype<>ObjectSymtable then
|
|
Internalerror(200109191);
|
|
|
|
make_global:=false;
|
|
if (not current_module.is_unit) or create_smartlink or
|
|
(procdef.owner.defowner.owner.symtabletype=globalsymtable) then
|
|
make_global:=true;
|
|
|
|
if make_global then
|
|
List.concat(Tai_symbol.Createname_global(labelname,AT_FUNCTION,0))
|
|
else
|
|
List.concat(Tai_symbol.Createname(labelname,AT_FUNCTION,0));
|
|
|
|
{ set param1 interface to self }
|
|
procdef.init_paraloc_info(callerside);
|
|
hsym:=tsym(procdef.parast.Find('self'));
|
|
if not(assigned(hsym) and
|
|
(hsym.typ=paravarsym)) then
|
|
internalerror(2010103101);
|
|
paraloc:=tparavarsym(hsym).paraloc[callerside].location;
|
|
if assigned(paraloc^.next) then
|
|
InternalError(2013020101);
|
|
|
|
case paraloc^.loc of
|
|
LOC_REGISTER:
|
|
begin
|
|
if ((ioffset>=simm13lo) and (ioffset<=simm13hi)) then
|
|
a_op_const_reg(list,OP_SUB,paraloc^.size,ioffset,paraloc^.register)
|
|
else
|
|
begin
|
|
a_load_const_reg(list,paraloc^.size,ioffset,NR_G1);
|
|
a_op_reg_reg(list,OP_SUB,paraloc^.size,NR_G1,paraloc^.register);
|
|
end;
|
|
end;
|
|
else
|
|
internalerror(2010103102);
|
|
end;
|
|
|
|
if (po_virtualmethod in procdef.procoptions) and
|
|
not is_objectpascal_helper(procdef.struct) then
|
|
begin
|
|
if (procdef.extnumber=$ffff) then
|
|
Internalerror(200006139);
|
|
{ mov 0(%rdi),%rax ; load vmt}
|
|
reference_reset_base(href,paraloc^.register,0,sizeof(pint));
|
|
cg.a_load_ref_reg(list,OS_ADDR,OS_ADDR,href,NR_G1);
|
|
{ jmp *vmtoffs(%eax) ; method offs }
|
|
reference_reset_base(href,NR_G1,tobjectdef(procdef.struct).vmtmethodoffset(procdef.extnumber),sizeof(pint));
|
|
list.concat(taicpu.op_ref_reg(A_LD,href,NR_G1));
|
|
list.concat(taicpu.op_reg(A_JMP,NR_G1));
|
|
{ Delay slot }
|
|
list.Concat(TAiCpu.Op_none(A_NOP));
|
|
end
|
|
else
|
|
g_external_wrapper(list,procdef,procdef.mangledname);
|
|
List.concat(Tai_symbol_end.Createname(labelname));
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.g_external_wrapper(list : TAsmList; procdef: tprocdef; const externalname: string);
|
|
begin
|
|
{ CALL overwrites %o7 with its own address, we use delay slot to restore it. }
|
|
list.concat(taicpu.op_reg_reg(A_MOV,NR_O7,NR_G1));
|
|
list.concat(taicpu.op_sym(A_CALL,current_asmdata.RefAsmSymbol(externalname)));
|
|
list.concat(taicpu.op_reg_reg(A_MOV,NR_G1,NR_O7));
|
|
end;
|
|
|
|
|
|
procedure tcgsparc.g_stackpointer_alloc(list : TAsmList;localsize : longint);
|
|
begin
|
|
Comment(V_Error,'tcgsparc.g_stackpointer_alloc method not implemented');
|
|
end;
|
|
|
|
procedure tcgsparc.a_bit_scan_reg_reg(list: TAsmList; reverse: boolean; size: TCGSize; src, dst: TRegister);
|
|
begin
|
|
Comment(V_Error,'tcgsparc.a_bit_scan_reg_reg method not implemented');
|
|
end;
|
|
|
|
{****************************************************************************
|
|
TCG64Sparc
|
|
****************************************************************************}
|
|
|
|
|
|
procedure tcg64sparc.a_load64_reg_ref(list : TAsmList;reg : tregister64;const ref : treference);
|
|
var
|
|
tmpref: treference;
|
|
begin
|
|
{ Override this function to prevent loading the reference twice }
|
|
tmpref:=ref;
|
|
cg.a_load_reg_ref(list,OS_32,OS_32,reg.reghi,tmpref);
|
|
inc(tmpref.offset,4);
|
|
cg.a_load_reg_ref(list,OS_32,OS_32,reg.reglo,tmpref);
|
|
end;
|
|
|
|
|
|
procedure tcg64sparc.a_load64_ref_reg(list : TAsmList;const ref : treference;reg : tregister64);
|
|
var
|
|
tmpref: treference;
|
|
begin
|
|
{ Override this function to prevent loading the reference twice }
|
|
tmpref:=ref;
|
|
cg.a_load_ref_reg(list,OS_32,OS_32,tmpref,reg.reghi);
|
|
inc(tmpref.offset,4);
|
|
cg.a_load_ref_reg(list,OS_32,OS_32,tmpref,reg.reglo);
|
|
end;
|
|
|
|
|
|
procedure tcg64sparc.a_load64_ref_cgpara(list : TAsmList;const r : treference;const paraloc : tcgpara);
|
|
var
|
|
hreg64 : tregister64;
|
|
begin
|
|
{ Override this function to prevent loading the reference twice.
|
|
Use here some extra registers, but those are optimized away by the RA }
|
|
hreg64.reglo:=cg.GetIntRegister(list,OS_32);
|
|
hreg64.reghi:=cg.GetIntRegister(list,OS_32);
|
|
a_load64_ref_reg(list,r,hreg64);
|
|
a_load64_reg_cgpara(list,hreg64,paraloc);
|
|
end;
|
|
|
|
|
|
procedure TCg64Sparc.get_64bit_ops(op:TOpCG;var op1,op2:TAsmOp;checkoverflow : boolean);
|
|
begin
|
|
case op of
|
|
OP_ADD :
|
|
begin
|
|
op1:=A_ADDCC;
|
|
if checkoverflow then
|
|
op2:=A_ADDXCC
|
|
else
|
|
op2:=A_ADDX;
|
|
end;
|
|
OP_SUB :
|
|
begin
|
|
op1:=A_SUBCC;
|
|
if checkoverflow then
|
|
op2:=A_SUBXCC
|
|
else
|
|
op2:=A_SUBX;
|
|
end;
|
|
OP_XOR :
|
|
begin
|
|
op1:=A_XOR;
|
|
op2:=A_XOR;
|
|
end;
|
|
OP_OR :
|
|
begin
|
|
op1:=A_OR;
|
|
op2:=A_OR;
|
|
end;
|
|
OP_AND :
|
|
begin
|
|
op1:=A_AND;
|
|
op2:=A_AND;
|
|
end;
|
|
else
|
|
internalerror(200203241);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TCg64Sparc.a_op64_reg_reg(list:TAsmList;op:TOpCG;size : tcgsize;regsrc,regdst:TRegister64);
|
|
var
|
|
op1,op2 : TAsmOp;
|
|
begin
|
|
case op of
|
|
OP_NEG :
|
|
begin
|
|
{ Use the simple code: y=0-z }
|
|
list.concat(taicpu.op_reg_reg_reg(A_SUBcc,NR_G0,regsrc.reglo,regdst.reglo));
|
|
list.concat(taicpu.op_reg_reg_reg(A_SUBX,NR_G0,regsrc.reghi,regdst.reghi));
|
|
exit;
|
|
end;
|
|
OP_NOT :
|
|
begin
|
|
list.concat(taicpu.op_reg_reg_reg(A_XNOR,regsrc.reglo,NR_G0,regdst.reglo));
|
|
list.concat(taicpu.op_reg_reg_reg(A_XNOR,regsrc.reghi,NR_G0,regdst.reghi));
|
|
exit;
|
|
end;
|
|
end;
|
|
get_64bit_ops(op,op1,op2,false);
|
|
list.concat(taicpu.op_reg_reg_reg(op1,regdst.reglo,regsrc.reglo,regdst.reglo));
|
|
list.concat(taicpu.op_reg_reg_reg(op2,regdst.reghi,regsrc.reghi,regdst.reghi));
|
|
end;
|
|
|
|
|
|
procedure TCg64Sparc.a_op64_const_reg(list:TAsmList;op:TOpCG;size : tcgsize;value:int64;regdst:TRegister64);
|
|
var
|
|
op1,op2:TAsmOp;
|
|
begin
|
|
case op of
|
|
OP_NEG,
|
|
OP_NOT :
|
|
internalerror(200306017);
|
|
end;
|
|
get_64bit_ops(op,op1,op2,false);
|
|
tcgsparc(cg).handle_reg_const_reg(list,op1,regdst.reglo,tcgint(lo(value)),regdst.reglo);
|
|
tcgsparc(cg).handle_reg_const_reg(list,op2,regdst.reghi,tcgint(hi(value)),regdst.reghi);
|
|
end;
|
|
|
|
|
|
procedure tcg64sparc.a_op64_const_reg_reg(list: TAsmList;op:TOpCG;size : tcgsize;value : int64; regsrc,regdst : tregister64);
|
|
var
|
|
l : tlocation;
|
|
begin
|
|
a_op64_const_reg_reg_checkoverflow(list,op,size,value,regsrc,regdst,false,l);
|
|
end;
|
|
|
|
|
|
procedure tcg64sparc.a_op64_reg_reg_reg(list: TAsmList;op:TOpCG;size : tcgsize;regsrc1,regsrc2,regdst : tregister64);
|
|
var
|
|
l : tlocation;
|
|
begin
|
|
a_op64_reg_reg_reg_checkoverflow(list,op,size,regsrc1,regsrc2,regdst,false,l);
|
|
end;
|
|
|
|
|
|
procedure tcg64sparc.a_op64_const_reg_reg_checkoverflow(list: TAsmList;op:TOpCG;size : tcgsize;value : int64;regsrc,regdst : tregister64;setflags : boolean;var ovloc : tlocation);
|
|
var
|
|
op1,op2:TAsmOp;
|
|
begin
|
|
case op of
|
|
OP_NEG,
|
|
OP_NOT :
|
|
internalerror(200306017);
|
|
end;
|
|
get_64bit_ops(op,op1,op2,setflags);
|
|
tcgsparc(cg).handle_reg_const_reg(list,op1,regsrc.reglo,tcgint(lo(value)),regdst.reglo);
|
|
tcgsparc(cg).handle_reg_const_reg(list,op2,regsrc.reghi,tcgint(hi(value)),regdst.reghi);
|
|
end;
|
|
|
|
|
|
procedure tcg64sparc.a_op64_reg_reg_reg_checkoverflow(list: TAsmList;op:TOpCG;size : tcgsize;regsrc1,regsrc2,regdst : tregister64;setflags : boolean;var ovloc : tlocation);
|
|
var
|
|
op1,op2:TAsmOp;
|
|
begin
|
|
case op of
|
|
OP_NEG,
|
|
OP_NOT :
|
|
internalerror(200306017);
|
|
end;
|
|
get_64bit_ops(op,op1,op2,setflags);
|
|
list.concat(taicpu.op_reg_reg_reg(op1,regsrc2.reglo,regsrc1.reglo,regdst.reglo));
|
|
list.concat(taicpu.op_reg_reg_reg(op2,regsrc2.reghi,regsrc1.reghi,regdst.reghi));
|
|
end;
|
|
|
|
|
|
procedure create_codegen;
|
|
begin
|
|
cg:=TCgSparc.Create;
|
|
if target_info.system=system_sparc_linux then
|
|
TCgSparc(cg).use_unlimited_pic_mode:=true
|
|
else
|
|
TCgSparc(cg).use_unlimited_pic_mode:=false;
|
|
cg64:=TCg64Sparc.Create;
|
|
end;
|
|
|
|
end.
|