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https://gitlab.com/freepascal.org/fpc/source.git
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284 lines
7.5 KiB
ObjectPascal
284 lines
7.5 KiB
ObjectPascal
{
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Copyright (c) 1999-2008 by Mazen Neifer and Florian Klaempfl
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Contains the assembler object for the AVR
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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 aasmcpu;
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{$i fpcdefs.inc}
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interface
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uses
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cclasses,
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globtype,globals,verbose,
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aasmbase,aasmtai,aasmdata,aasmsym,
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cgbase,cgutils,cpubase,cpuinfo;
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const
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{ "mov reg,reg" source operand number }
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O_MOV_SOURCE = 1;
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{ "mov reg,reg" source operand number }
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O_MOV_DEST = 0;
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type
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taicpu = class(tai_cpu_abstract_sym)
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constructor op_none(op : tasmop);
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constructor op_reg(op : tasmop;_op1 : tregister);
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constructor op_const(op : tasmop;_op1 : LongInt);
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constructor op_ref(op : tasmop;const _op1 : treference);
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constructor op_reg_reg(op : tasmop;_op1,_op2 : tregister);
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constructor op_reg_ref(op : tasmop;_op1 : tregister;const _op2 : treference);
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constructor op_reg_const(op:tasmop; _op1: tregister; _op2: LongInt);
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constructor op_const_reg(op:tasmop; _op1: LongInt; _op2: tregister);
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constructor op_ref_reg(op : tasmop;const _op1 : treference;_op2 : tregister);
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{ this is for Jmp instructions }
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constructor op_cond_sym(op : tasmop;cond:TAsmCond;_op1 : tasmsymbol);
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constructor op_sym(op : tasmop;_op1 : tasmsymbol);
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constructor op_sym_ofs(op : tasmop;_op1 : tasmsymbol;_op1ofs:longint);
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procedure loadbool(opidx:longint;_b:boolean);
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{ register allocation }
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function is_same_reg_move(regtype: Tregistertype):boolean; override;
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{ register spilling code }
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function spilling_get_operation_type(opnr: longint): topertype;override;
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end;
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tai_align = class(tai_align_abstract)
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{ nothing to add }
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end;
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procedure InitAsm;
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procedure DoneAsm;
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function spilling_create_load(const ref:treference;r:tregister):Taicpu;
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function spilling_create_store(r:tregister; const ref:treference):Taicpu;
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function setcondition(i : taicpu;c : tasmcond) : taicpu;
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implementation
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{*****************************************************************************
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taicpu Constructors
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*****************************************************************************}
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procedure taicpu.loadbool(opidx:longint;_b:boolean);
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begin
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if opidx>=ops then
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ops:=opidx+1;
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with oper[opidx]^ do
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begin
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if typ=top_ref then
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dispose(ref);
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b:=_b;
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typ:=top_bool;
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end;
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end;
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constructor taicpu.op_none(op : tasmop);
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begin
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inherited create(op);
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end;
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constructor taicpu.op_reg(op : tasmop;_op1 : tregister);
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begin
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inherited create(op);
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ops:=1;
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loadreg(0,_op1);
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end;
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constructor taicpu.op_ref(op : tasmop;const _op1 : treference);
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begin
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inherited create(op);
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ops:=1;
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loadref(0,_op1);
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end;
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constructor taicpu.op_const(op : tasmop;_op1 : LongInt);
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begin
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inherited create(op);
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ops:=1;
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loadconst(0,_op1);
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end;
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constructor taicpu.op_reg_reg(op : tasmop;_op1,_op2 : tregister);
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begin
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inherited create(op);
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ops:=2;
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loadreg(0,_op1);
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loadreg(1,_op2);
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end;
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constructor taicpu.op_reg_const(op:tasmop; _op1: tregister; _op2: LongInt);
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begin
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inherited create(op);
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ops:=2;
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loadreg(0,_op1);
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loadconst(1,aint(_op2));
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end;
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constructor taicpu.op_const_reg(op:tasmop; _op1: LongInt; _op2: tregister);
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begin
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inherited create(op);
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ops:=2;
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loadconst(0,_op1);
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loadreg(1,_op2);
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end;
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constructor taicpu.op_reg_ref(op : tasmop;_op1 : tregister;const _op2 : treference);
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begin
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inherited create(op);
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ops:=2;
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loadreg(0,_op1);
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loadref(1,_op2);
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end;
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constructor taicpu.op_ref_reg(op : tasmop;const _op1 : treference;_op2 : tregister);
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begin
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inherited create(op);
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ops:=2;
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loadref(0,_op1);
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loadreg(1,_op2);
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end;
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constructor taicpu.op_cond_sym(op : tasmop;cond:TAsmCond;_op1 : tasmsymbol);
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begin
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inherited create(op);
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is_jmp:=op in jmp_instructions;
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condition:=cond;
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ops:=1;
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loadsymbol(0,_op1,0);
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end;
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constructor taicpu.op_sym(op : tasmop;_op1 : tasmsymbol);
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begin
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inherited create(op);
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is_jmp:=op in jmp_instructions;
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ops:=1;
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loadsymbol(0,_op1,0);
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end;
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constructor taicpu.op_sym_ofs(op : tasmop;_op1 : tasmsymbol;_op1ofs:longint);
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begin
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inherited create(op);
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ops:=1;
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loadsymbol(0,_op1,_op1ofs);
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end;
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function taicpu.is_same_reg_move(regtype: Tregistertype):boolean;
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begin
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result:=(
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((opcode in [A_MOV,A_MOVW]) and (regtype = R_INTREGISTER))
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) and
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(ops=2) and
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(oper[0]^.typ=top_reg) and
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(oper[1]^.typ=top_reg) and
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(oper[0]^.reg=oper[1]^.reg);
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end;
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function taicpu.spilling_get_operation_type(opnr: longint): topertype;
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begin
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result:=operand_read;
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case opcode of
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A_CP,A_CPC,A_CPI,A_PUSH :
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;
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else
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begin
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if opnr=0 then
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result:=operand_write;
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end;
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end;
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end;
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function spilling_create_load(const ref:treference;r:tregister):Taicpu;
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begin
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case getregtype(r) of
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R_INTREGISTER :
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if ref.offset<>0 then
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result:=taicpu.op_reg_ref(A_LDD,r,ref)
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else
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result:=taicpu.op_reg_ref(A_LD,r,ref);
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R_ADDRESSREGISTER :
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if ref.offset<>0 then
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result:=taicpu.op_reg_ref(A_LDD,r,ref)
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else
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result:=taicpu.op_reg_ref(A_LD,r,ref);
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else
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internalerror(200401041);
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end;
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end;
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function spilling_create_store(r:tregister; const ref:treference):Taicpu;
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begin
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case getregtype(r) of
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R_INTREGISTER :
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if ref.offset<>0 then
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result:=taicpu.op_ref_reg(A_STD,ref,r)
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else
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result:=taicpu.op_ref_reg(A_ST,ref,r);
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R_ADDRESSREGISTER :
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if ref.offset<>0 then
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result:=taicpu.op_ref_reg(A_STD,ref,r)
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else
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result:=taicpu.op_ref_reg(A_ST,ref,r);
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else
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internalerror(200401041);
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end;
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end;
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procedure InitAsm;
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begin
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end;
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procedure DoneAsm;
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begin
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end;
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function setcondition(i : taicpu;c : tasmcond) : taicpu;
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begin
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i.condition:=c;
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result:=i;
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end;
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begin
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cai_cpu:=taicpu;
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cai_align:=tai_align;
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end.
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