mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-10-31 08:31:49 +01:00
127 lines
4.7 KiB
ObjectPascal
127 lines
4.7 KiB
ObjectPascal
{
|
|
Copyright (c) 2002 by Florian Klaempfl
|
|
|
|
Implements the M68K specific part of call nodes
|
|
|
|
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 n68kcal;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
symdef,node,ncal,ncgcal;
|
|
|
|
type
|
|
tm68kcallnode = class(tcgcallnode)
|
|
protected
|
|
procedure gen_syscall_para(para: tcallparanode); override;
|
|
public
|
|
procedure do_syscall;override;
|
|
procedure pop_parasize(pop_size: longint);override;
|
|
end;
|
|
|
|
|
|
implementation
|
|
|
|
uses
|
|
globtype,systems,
|
|
cutils,verbose,globals,
|
|
symconst,symbase,symsym,symcpu,symtable,defutil,paramgr,parabase,
|
|
cgbase,pass_2,
|
|
cpuinfo,cpubase,aasmbase,aasmtai,aasmdata,aasmcpu,
|
|
nmem,nld,ncnv,
|
|
ncgutil,cgutils,cgobj,tgobj,rgobj,rgcpu,
|
|
cg64f32,cgcpu,cpupi,procinfo;
|
|
|
|
|
|
procedure tm68kcallnode.pop_parasize(pop_size: longint);
|
|
begin
|
|
if pop_size<>0 then
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_const_reg(A_ADD,S_L,pop_size,NR_SP));
|
|
end;
|
|
|
|
|
|
procedure tm68kcallnode.gen_syscall_para(para: tcallparanode);
|
|
begin
|
|
{ lib parameter has no special type but proccalloptions must be a syscall }
|
|
para.left:=cloadnode.create(tcpuprocdef(procdefinition).libsym,tcpuprocdef(procdefinition).libsym.owner);
|
|
end;
|
|
|
|
|
|
procedure tm68kcallnode.do_syscall;
|
|
var
|
|
tmpref: treference;
|
|
begin
|
|
case target_info.system of
|
|
system_m68k_atari:
|
|
begin
|
|
if po_syscall in tprocdef(procdefinition).procoptions then
|
|
begin
|
|
reference_reset_base(tmpref,NR_SP,0,2,[]);
|
|
tmpref.direction:=dir_dec;
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_const_ref(A_MOVE,S_W,tprocdef(procdefinition).import_nr,tmpref));
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_const(A_TRAP,S_NO,tprocdef(procdefinition).extnumber));
|
|
inc(pushedparasize,2); { kludge, trap code should be a hidden para instead... }
|
|
end
|
|
else
|
|
internalerror(2016100301);
|
|
end;
|
|
system_m68k_amiga:
|
|
begin
|
|
if po_syscall_legacy in tprocdef(procdefinition).procoptions then
|
|
begin
|
|
{ according to Amiga Developer CD 2.1, system functions destroy the
|
|
scratch regs D0-D1 and A0-A1, but preserve all other regs. A6 is
|
|
not used as FP on Amiga any more (we use A5), so we don't need to
|
|
save it. (KB)
|
|
http://amigadev.elowar.com/read/ADCD_2.1/Libraries_Manual_guide/node0290.html }
|
|
reference_reset_base(tmpref,NR_A6,-tprocdef(procdefinition).extnumber,4,[]);
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_ref(A_JSR,S_NO,tmpref));
|
|
end
|
|
else
|
|
internalerror(2005010403);
|
|
end;
|
|
system_m68k_palmos:
|
|
begin
|
|
if po_syscall in tprocdef(procdefinition).procoptions then
|
|
begin
|
|
if po_syscall_has_importnr in tprocdef(procdefinition).procoptions then
|
|
begin
|
|
cg.getcpuregister(current_asmdata.CurrAsmList,NR_D2);
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_const_reg(A_MOVE,S_L,tprocdef(procdefinition).import_nr,NR_D2));
|
|
end;
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_const(A_TRAP,S_NO,15));
|
|
current_asmdata.CurrAsmList.concat(tai_const.create_16bit(tprocdef(procdefinition).extnumber));
|
|
if po_syscall_has_importnr in tprocdef(procdefinition).procoptions then
|
|
cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_D2);
|
|
end
|
|
else
|
|
internalerror(2017081201);
|
|
end;
|
|
else
|
|
internalerror(2004042901);
|
|
end;
|
|
end;
|
|
|
|
|
|
begin
|
|
ccallnode:=tm68kcallnode;
|
|
end.
|