mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-05-01 18:33:45 +02:00
1536e9e65b
+ made Amiga syscalls to save/restore the frame pointer (do we really need a frame pointer?) + some disabled debug comments (to asm source) + compiler is now able to generate some VERY basic, but working Amiga-m68k executables git-svn-id: trunk@9051 -
87 lines
2.7 KiB
ObjectPascal
87 lines
2.7 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 bymethodpointer
|
|
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)
|
|
procedure do_syscall;override;
|
|
end;
|
|
|
|
|
|
implementation
|
|
|
|
uses
|
|
globtype,systems,
|
|
cutils,verbose,globals,
|
|
symconst,symbase,symsym,symtable,defutil,paramgr,parabase,
|
|
cgbase,pass_2,
|
|
cpuinfo,cpubase,aasmbase,aasmtai,aasmdata,aasmcpu,
|
|
nmem,nld,ncnv,
|
|
ncgutil,cgutils,cgobj,tgobj,regvars,rgobj,rgcpu,
|
|
cg64f32,cgcpu,cpupi,procinfo;
|
|
|
|
|
|
procedure tm68kcallnode.do_syscall;
|
|
var
|
|
tmpref: treference;
|
|
tmpref2: treference;
|
|
begin
|
|
case target_info.system of
|
|
system_m68k_amiga:
|
|
begin
|
|
if po_syscall_legacy in tprocdef(procdefinition).procoptions then
|
|
begin
|
|
{ save base pointer on syscalls }
|
|
{ FIXME: probably this will need to be extended to save all regs (KB) }
|
|
reference_reset_base(tmpref2, NR_STACK_POINTER_REG, 0);
|
|
tmpref2.direction := dir_dec;
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_reg_ref(A_MOVE,S_L,NR_FRAME_POINTER_REG,tmpref2));
|
|
|
|
{ the actuall call }
|
|
reference_reset_base(tmpref,NR_A6,-tprocdef(procdefinition).extnumber);
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_ref(A_JSR,S_NO,tmpref));
|
|
|
|
{ restore frame pointer }
|
|
reference_reset_base(tmpref2, NR_STACK_POINTER_REG, 0);
|
|
tmpref2.direction := dir_inc;
|
|
current_asmdata.CurrAsmList.concat(taicpu.op_ref_reg(A_MOVE,S_L,tmpref2,NR_FRAME_POINTER_REG));
|
|
end
|
|
else
|
|
internalerror(2005010403);
|
|
end;
|
|
else
|
|
internalerror(2004042901);
|
|
end;
|
|
end;
|
|
|
|
|
|
begin
|
|
ccallnode:=tm68kcallnode;
|
|
end.
|