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128 lines
3.8 KiB
ObjectPascal
128 lines
3.8 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1993-98 by Florian Klaempfl
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This unit implements the code generator for the i386
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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 cg386;
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interface
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uses
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cgobj,aasm
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{$i cpuunit.inc}
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;
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type
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pcg386 = ^tcg386;
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tcg386 = object(tcg)
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procedure a_push_reg(list : paasmoutput;r : tregister);virtual;
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procedure a_call_name(list : paasmoutput;const s : string;
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offset : longint);virtual;
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procedure a_load_const8_ref(list : paasmoutput;b : byte;const ref : treference);virtual;
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procedure a_load_const16_ref(list : paasmoutput;w : word;const ref : treference);virtual;
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procedure a_load_const32_ref(list : paasmoutput;l : longint;const ref : treference);virtual;
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procedure a_load_const64_ref(list : paasmoutput;q : qword;const ref : treference);virtual;
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procedure g_stackframe_entry(list : paasmoutput;localsize : longint);virtual;
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constructor init;
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end;
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implementation
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uses
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globtype,globals;
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constructor tcg386.init;
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begin
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inherited init;
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end;
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procedure tcg386.g_stackframe_entry(list : paasmoutput;localsize : longint);
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begin
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if localsize<>0 then
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begin
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if (cs_littlesize in aktglobalswitches) and (localsize<=65535) then
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list^.insert(new(pai386,op_const_const(A_ENTER,S_NO,localsize,0)))
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else
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begin
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list^.concat(new(pai386,op_reg(A_PUSH,S_L,R_EBP)));
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list^.concat(new(pai386,op_reg_reg(A_MOV,S_L,R_ESP,R_EBP)));
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list^.concat(new(pai386,op_const_reg(A_SUB,S_L,localsize,R_ESP)));
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end;
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end
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else
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begin
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list^.concat(new(pai386,op_reg(A_PUSH,S_L,R_EBP)));
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list^.concat(new(pai386,op_reg_reg(A_MOV,S_L,R_ESP,R_EBP)));
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end;
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end;
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procedure tcg386.a_call_name(list : paasmoutput;const s : string;
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offset : longint);
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begin
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list^.concat(new(pai386,op_csymbol(A_CALL,S_NO,newcsymbol(s,offset))));
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end;
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procedure tcg386.a_push_reg(list : paasmoutput;r : tregister);
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begin
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list^.concat(new(pai386,op_reg(A_PUSH,regsize(r),r)));
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end;
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procedure tcg386.a_load_const8_ref(list : paasmoutput;b : byte;const ref : treference);
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begin
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abstract;
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end;
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procedure tcg386.a_load_const16_ref(list : paasmoutput;w : word;const ref : treference);
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begin
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abstract;
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end;
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procedure tcg386.a_load_const32_ref(list : paasmoutput;l : longint;const ref : treference);
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begin
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abstract;
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end;
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procedure tcg386.a_load_const64_ref(list : paasmoutput;q : qword;const ref : treference);
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begin
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abstract;
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end;
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end.
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{
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$Log$
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Revision 1.2 1999-01-23 23:29:43 florian
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* first running version of the new code generator
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* when compiling exceptions under Linux fixed
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Revision 1.1 1998/12/15 22:17:02 florian
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* first version
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} |