mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-05 05:58:02 +02:00
e20639732f
methods that don't have to be implemented by targets using the high
level code generator, with dummy implementations that raise an internal
error (to remove warnings about instantiating classes with abstract
methods)
* let the JVM tcg descendent derive from this new thlbasecgcpu class
git-svn-id: trunk@21098 -
130 lines
4.0 KiB
ObjectPascal
130 lines
4.0 KiB
ObjectPascal
{
|
|
Copyright (c) 2010 by Jonas Maebe
|
|
|
|
This unit implements the code generator for the Java VM
|
|
|
|
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 cgcpu;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
globtype,parabase,
|
|
cgbase,cgutils,cgobj,cghlcpu,
|
|
aasmbase,aasmtai,aasmdata,aasmcpu,
|
|
cpubase,cpuinfo,
|
|
node,symconst,SymType,symdef,
|
|
rgcpu;
|
|
|
|
type
|
|
TCgJvm=class(thlbasecgcpu)
|
|
public
|
|
procedure init_register_allocators;override;
|
|
procedure done_register_allocators;override;
|
|
function getintregister(list:TAsmList;size:Tcgsize):Tregister;override;
|
|
function getfpuregister(list:TAsmList;size:Tcgsize):Tregister;override;
|
|
function getaddressregister(list:TAsmList):Tregister;override;
|
|
procedure do_register_allocation(list:TAsmList;headertai:tai);override;
|
|
end;
|
|
|
|
procedure create_codegen;
|
|
|
|
implementation
|
|
|
|
uses
|
|
globals,verbose,systems,cutils,
|
|
paramgr,fmodule,
|
|
tgobj,
|
|
procinfo,cpupi;
|
|
|
|
|
|
{****************************************************************************
|
|
Assembler code
|
|
****************************************************************************}
|
|
|
|
procedure tcgjvm.init_register_allocators;
|
|
begin
|
|
inherited init_register_allocators;
|
|
{$ifndef cpu64bitaddr}
|
|
rg[R_INTREGISTER]:=Trgcpu.create(R_INTREGISTER,R_SUBD,
|
|
[RS_R0],first_int_imreg,[]);
|
|
{$else not cpu64bitaddr}
|
|
rg[R_INTREGISTER]:=Trgcpu.create(R_INTREGISTER,R_SUBQ,
|
|
[RS_R0],first_int_imreg,[]);
|
|
{$endif not cpu64bitaddr}
|
|
rg[R_FPUREGISTER]:=trgcpu.create(R_FPUREGISTER,R_SUBFS,
|
|
[RS_R0],first_fpu_imreg,[]);
|
|
rg[R_MMREGISTER]:=trgcpu.create(R_MMREGISTER,R_SUBNONE,
|
|
[RS_R0],first_mm_imreg,[]);
|
|
end;
|
|
|
|
|
|
procedure tcgjvm.done_register_allocators;
|
|
begin
|
|
rg[R_INTREGISTER].free;
|
|
rg[R_FPUREGISTER].free;
|
|
rg[R_MMREGISTER].free;
|
|
inherited done_register_allocators;
|
|
end;
|
|
|
|
|
|
function tcgjvm.getintregister(list:TAsmList;size:Tcgsize):Tregister;
|
|
begin
|
|
if not(size in [OS_64,OS_S64]) then
|
|
result:=rg[R_INTREGISTER].getregister(list,R_SUBD)
|
|
else
|
|
result:=rg[R_INTREGISTER].getregister(list,R_SUBQ);
|
|
end;
|
|
|
|
|
|
function tcgjvm.getfpuregister(list:TAsmList;size:Tcgsize):Tregister;
|
|
begin
|
|
if size=OS_F64 then
|
|
result:=rg[R_FPUREGISTER].getregister(list,R_SUBFD)
|
|
else
|
|
result:=rg[R_FPUREGISTER].getregister(list,R_SUBFS);
|
|
end;
|
|
|
|
|
|
function tcgjvm.getaddressregister(list:TAsmList):Tregister;
|
|
begin
|
|
{ avoid problems in the compiler where int and addr registers are
|
|
mixed for now; we currently don't have to differentiate between the
|
|
two as far as the jvm backend is concerned }
|
|
result:=rg[R_INTREGISTER].getregister(list,R_SUBD)
|
|
end;
|
|
|
|
|
|
procedure tcgjvm.do_register_allocation(list:TAsmList;headertai:tai);
|
|
begin
|
|
{ We only run the "register allocation" once for an arbitrary allocator,
|
|
which will perform the register->temp mapping for all register types.
|
|
This allows us to easily reuse temps. }
|
|
trgcpu(rg[R_INTREGISTER]).do_all_register_allocation(list,headertai);
|
|
end;
|
|
|
|
|
|
procedure create_codegen;
|
|
begin
|
|
cg:=tcgjvm.Create;
|
|
end;
|
|
|
|
end.
|