1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
{
Copyright (c) 2002 by Florian Klaempfl
Implements the PowerPC 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 nppccal;
{$i fpcdefs.inc}
interface
uses
symdef,node,ncal,ncgcal;
type
tppccallnode = class(tcgcallnode)
protected
procedure gen_syscall_para(para: tcallparanode); override;
public
procedure extra_call_code;override;
procedure do_syscall;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 tppccallnode.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 tppccallnode.extra_call_code;
begin
if assigned(varargsparas) then
begin
if (target_info.abi = abi_powerpc_sysv) then
begin
if va_uses_float_reg in varargsparas.varargsinfo then
current_asmdata.CurrAsmList.concat(taicpu.op_const_const_const(A_CREQV,6,6,6))
else
current_asmdata.CurrAsmList.concat(taicpu.op_const_const_const(A_CRXOR,6,6,6));
end;
end;
end;
procedure tppccallnode.do_syscall;
procedure do_call_ref(constref ref: treference);
begin
cg.getcpuregister(current_asmdata.CurrAsmList,NR_R0);
cg.a_load_ref_reg(current_asmdata.CurrAsmList,OS_ADDR,OS_ADDR,ref,NR_R0);
cg.a_call_reg(current_asmdata.CurrAsmList,NR_R0);
cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_R0);
end;
var
tmpref: treference;
begin
case target_info.system of
system_powerpc_amiga:
begin
{ one syscall convention for AmigaOS/PowerPC
which is very similar to basesysv (a.k.a basefirst) on MorphOS }
reference_reset_base(tmpref,NR_R3,tprocdef(procdefinition).extnumber,ctempposinvalid,sizeof(pint),[]);
do_call_ref(tmpref);
end;
system_powerpc_morphos:
begin
{ all conventions but legacy }
if ([po_syscall_basefirst,po_syscall_basenone,
po_syscall_baselast,po_syscall_basereg] * tprocdef(procdefinition).procoptions) <> [] then
begin
cg.getcpuregister(current_asmdata.CurrAsmList,NR_R12);
get_syscall_call_ref(tmpref,NR_R12);
do_call_ref(tmpref);
cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_R12);
end
else if po_syscall_legacy in tprocdef(procdefinition).procoptions then
begin
cg.getcpuregister(current_asmdata.CurrAsmList,NR_R3);
{ R3 must contain the call offset }
current_asmdata.CurrAsmList.concat(taicpu.op_reg_const(A_LI,NR_R3,-tprocdef(procdefinition).extnumber));
reference_reset_base(tmpref,NR_R2,100,ctempposinvalid,4,[]); { 100 ($64) is EmulDirectCallOS offset }
do_call_ref(tmpref);
cg.ungetcpuregister(current_asmdata.CurrAsmList,NR_R3);
end
else
internalerror(2005010403);
end;
else
internalerror(2004042901);
end;
end;
begin
ccallnode:=tppccallnode;
end.
|
