paweld/fpc
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/fpc/source.git synced 2025-08-09 20:05:57 +02:00
Code Issues Packages Projects Releases Wiki Activity

* first version

Browse Source
This commit is contained in:
florian 1998-12-15 22:17:02 +00:00
parent 3baa79797b
commit e42b0657cd
1 changed files with 83 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

83
compiler/new/cg386.pas Normal file
View File

@ -0,0 +1,83 @@
{
$Id$
Copyright (c) 1993-98 by Florian Klaempfl
This unit implements the code generator for the i386
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
unit cg386;
interface
uses
cgobj;
type
pcg386 = ^tcg386;
tcg386 = object(tcg)
procedure a_push_reg(list : paasmoutput;r : tregister);virtual;
procedure a_call_name(list : paasmoutput;const s : string;
offset : longint);virtual;
procedure a_load_const8_ref(list : paasmoutput;b : byte;ref : treference);virtual;
procedure a_load_const16_ref(list : paasmoutput;w : word;ref : treference);virtual;
procedure a_load_const32_ref(list : paasmoutput;l : longint;ref : treference);virtual;
procedure a_load_const64_ref(list : paasmoutput;{ q : qword; }ref : treference);virtual;
procedure g_stackframe_entry(list : paasmoutput;localsize : longint);
end;
implementation
procedure tcg386.g_stackframe_entry(list : paasmoutput;localsize : longint);
begin
if localsize<>0 then
begin
if (cs_littlesize in aktglobalswitches) and (stackframe<=65535) then
list^.insert(new(pai386,op_const_const(A_ENTER,S_NO,stackframe,0)))
else
begin
g_stackframe_entry(list,stackframe);
list^.concat(new(pai386,op_reg(A_PUSH,S_L,R_EBP)));
list^.concat(new(pai386,op_reg_reg(A_MOV,S_L,R_ESP,R_EBP)));
list^.concat(new(pai386,op_const_reg(A_SUB,S_L,localsize,R_ESP)));
end;
end
else
begin
list^.concat(new(pai386,op_reg(A_PUSH,S_L,R_EBP)));
list^.concat(new(pai386,op_reg_reg(A_MOV,S_L,R_ESP,R_EBP)));
end;
end;
procedure tcg386.a_call_name(list : paasmoutput;const s : string;
offset : longint);
begin
list^.concat(new(pai386,op_csymbol(A_CALL,S_NO,newcsymbol(s,offset))));
end;
end.
{
$Log$
Revision 1.1 1998-12-15 22:17:02 florian
* first version
}