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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
{
Copyright (c) 1998-2003 by Florian Klaempfl
This unit implements the arm specific class for the register
allocator
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 rgcpu;
{$i fpcdefs.inc}
interface
uses
aasmbase,aasmtai,aasmcpu,
cgbase,cgutils,
cpubase,
rgobj;
type
trgcpu = class(trgobj)
procedure do_spill_read(list:Taasmoutput;pos:tai;const spilltemp:treference;tempreg:tregister);override;
procedure do_spill_written(list:Taasmoutput;pos:tai;const spilltemp:treference;tempreg:tregister);override;
end;
trgintcpu = class(trgcpu)
procedure add_cpu_interferences(p : tai);override;
end;
implementation
uses
verbose, cutils,
cgobj,
procinfo;
procedure trgcpu.do_spill_read(list:Taasmoutput;pos:tai;const spilltemp:treference;tempreg:tregister);
var
helpins: tai;
tmpref : treference;
helplist : taasmoutput;
l : tasmlabel;
hreg : tregister;
begin
if abs(spilltemp.offset)>4095 then
begin
helplist:=taasmoutput.create;
reference_reset(tmpref);
{ create consts entry }
objectlibrary.getjumplabel(l);
cg.a_label(current_procinfo.aktlocaldata,l);
tmpref.symboldata:=current_procinfo.aktlocaldata.last;
current_procinfo.aktlocaldata.concat(tai_const.Create_32bit(spilltemp.offset));
{ load consts entry }
if getregtype(tempreg)=R_INTREGISTER then
hreg:=getregisterinline(helplist,R_SUBWHOLE)
else
hreg:=cg.getintregister(helplist,OS_ADDR);
tmpref.symbol:=l;
tmpref.base:=NR_R15;
helplist.concat(taicpu.op_reg_ref(A_LDR,hreg,tmpref));
reference_reset_base(tmpref,hreg,0);
if spilltemp.index<>NR_NO then
internalerror(200401263);
helpins:=spilling_create_load(tmpref,tempreg);
helplist.concat(helpins);
if pos=nil then
list.insertlistafter(list.first,helplist)
else
list.insertlistafter(pos.next,helplist);
helplist.free;
end
else
inherited do_spill_read(list,pos,spilltemp,tempreg);
end;
procedure trgcpu.do_spill_written(list:Taasmoutput;pos:tai;const spilltemp:treference;tempreg:tregister);
var
helpins: tai;
tmpref : treference;
helplist : taasmoutput;
l : tasmlabel;
hreg : tregister;
begin
if abs(spilltemp.offset)>4095 then
begin
helplist:=taasmoutput.create;
reference_reset(tmpref);
{ create consts entry }
objectlibrary.getjumplabel(l);
cg.a_label(current_procinfo.aktlocaldata,l);
tmpref.symboldata:=current_procinfo.aktlocaldata.last;
current_procinfo.aktlocaldata.concat(tai_const.Create_32bit(spilltemp.offset));
{ load consts entry }
if getregtype(tempreg)=R_INTREGISTER then
hreg:=getregisterinline(helplist,R_SUBWHOLE)
else
hreg:=cg.getintregister(helplist,OS_ADDR);
tmpref.symbol:=l;
tmpref.base:=NR_R15;
helplist.concat(taicpu.op_reg_ref(A_LDR,hreg,tmpref));
if spilltemp.index<>NR_NO then
internalerror(200401263);
reference_reset_base(tmpref,hreg,0);
helplist.concat(spilling_create_store(tempreg,tmpref));
if getregtype(tempreg)=R_INTREGISTER then
ungetregisterinline(helplist,hreg);
list.insertlistafter(pos,helplist)
end
else
inherited do_spill_written(list,pos,spilltemp,tempreg);
end;
procedure trgintcpu.add_cpu_interferences(p : tai);
begin
if p.typ=ait_instruction then
begin
case taicpu(p).opcode of
A_MUL:
add_edge(getsupreg(taicpu(p).oper[0]^.reg),getsupreg(taicpu(p).oper[1]^.reg));
A_UMULL,
A_UMLAL,
A_SMULL,
A_SMLAL:
begin
add_edge(getsupreg(taicpu(p).oper[0]^.reg),getsupreg(taicpu(p).oper[1]^.reg));
add_edge(getsupreg(taicpu(p).oper[1]^.reg),getsupreg(taicpu(p).oper[2]^.reg));
add_edge(getsupreg(taicpu(p).oper[0]^.reg),getsupreg(taicpu(p).oper[2]^.reg));
end;
end;
end;
end;
end.
|