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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
{
Copyright (c) 1998-2002 by Florian Klaempfl
This unit implements the powerpc 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;
{$i fpcdefs.inc}
interface
uses
aasmbase,aasmtai,aasmdata,aasmcpu,
cgbase,cgutils,
cpubase,
rgobj;
type
trgcpu = class(trgobj)
procedure do_spill_read(list:TAsmList;pos:tai;const spilltemp:treference;tempreg:tregister);override;
procedure do_spill_written(list:TAsmList;pos:tai;const spilltemp:treference;tempreg:tregister);override;
end;
trgintcpu = class(trgcpu)
{$ifdef user0}
procedure add_cpu_interferences(p : tai);override;
{$endif user0}
end;
implementation
uses
verbose, cutils,globtype,
cgobj,
procinfo;
procedure trgcpu.do_spill_read(list:TAsmList;pos:tai;const spilltemp:treference;tempreg:tregister);
var
tmpref : treference;
helplist : TAsmList;
hreg : tregister;
ins : Taicpu;
begin
if (spilltemp.offset<low(smallint)) or
(spilltemp.offset>high(smallint)) then
begin
helplist:=TAsmList.create;
if (spilltemp.index<>NR_NO) then
internalerror(200704201);
if getregtype(tempreg)=R_INTREGISTER then
begin
hreg:=getregisterinline(helplist,[R_SUBWHOLE]);
{Done by add_cpu_interferences now.
add_edge(getsupreg(hreg),RS_R0);}
end
else
hreg:=cg.getintregister(helplist,OS_ADDR);
reference_reset(tmpref,sizeof(aint));
tmpref.offset:=spilltemp.offset;
tmpref.refaddr := addr_higha;
ins:=taicpu.op_reg_reg_ref(A_ADDIS,hreg,spilltemp.base,tmpref);
add_cpu_interferences(ins);
helplist.concat(ins);
tmpref:=spilltemp;
tmpref.refaddr := addr_low;
tmpref.base:=hreg;
ins:=spilling_create_load(tmpref,tempreg);
add_cpu_interferences(ins);
helplist.concat(ins);
if getregtype(tempreg)=R_INTREGISTER then
ungetregisterinline(helplist,hreg);
list.insertlistafter(pos,helplist);
helplist.free;
end
else
inherited do_spill_read(list,pos,spilltemp,tempreg);
end;
procedure trgcpu.do_spill_written(list:TAsmList;pos:tai;const spilltemp:treference;tempreg:tregister);
var
tmpref : treference;
helplist : TAsmList;
hreg : tregister;
ins : Taicpu;
begin
if (spilltemp.offset<low(smallint)) or
(spilltemp.offset>high(smallint)) then
begin
helplist:=TAsmList.create;
if (spilltemp.index<>NR_NO) then
internalerror(200704201);
if getregtype(tempreg)=R_INTREGISTER then
begin
hreg:=getregisterinline(helplist,[R_SUBWHOLE]);
{Done by add_cpu_interferences now.
add_edge(getsupreg(hreg),RS_R0);}
end
else
hreg:=cg.getintregister(helplist,OS_ADDR);
reference_reset(tmpref,sizeof(aint));
tmpref.offset:=spilltemp.offset;
tmpref.refaddr := addr_higha;
ins:=taicpu.op_reg_reg_ref(A_ADDIS,hreg,spilltemp.base,tmpref);
add_cpu_interferences(ins);
helplist.concat(ins);
tmpref:=spilltemp;
tmpref.refaddr := addr_low;
tmpref.base:=hreg;
ins:=spilling_create_store(tempreg,tmpref);
add_cpu_interferences(ins);
helplist.concat(ins);
if getregtype(tempreg)=R_INTREGISTER then
ungetregisterinline(helplist,hreg);
list.insertlistafter(pos,helplist);
helplist.free;
end
else
inherited do_spill_written(list,pos,spilltemp,tempreg);
end;
{$ifdef user0}
procedure trgintcpu.add_cpu_interferences(p : tai);
var
r : tregister;
begin
if p.typ=ait_instruction then
begin
case taicpu(p).opcode of
A_ADDI, A_ADDIS,
A_STB, A_LBZ, A_STBX, A_LBZX, A_STH, A_LHZ, A_STHX, A_LHZX, A_LHA, A_LHAX,
A_STW, A_LWZ, A_STWX, A_LWZX,
A_STFS, A_LFS, A_STFSX, A_LFSX, A_STFD, A_LFD, A_STFDX, A_LFDX, A_STFIWX,
A_STHBRX, A_LHBRX, A_STWBRX, A_LWBRX, A_STWCX_, A_LWARX,
A_ECIWX, A_ECOWX,
A_LMW, A_STMW,A_LSWI,A_LSWX,A_STSWI,A_STSWX
{$ifdef cpu64bitalu}
, A_STD, A_STDX,
A_LD, A_LDX,
A_LWA, A_LWAX,
A_STDCX_,A_LDARX
{$endif cpu64bitalu}
:
begin
case taicpu(p).oper[1]^.typ of
top_reg:
add_edge(getsupreg(taicpu(p).oper[1]^.reg),RS_R0);
top_ref:
if (taicpu(p).oper[1]^.ref^.base <> NR_NO) then
add_edge(getsupreg(taicpu(p).oper[1]^.ref^.base),RS_R0);
end;
end;
A_DCBA, A_DCBI, A_DCBST, A_DCBT, A_DCBTST, A_DCBZ, A_DCBF, A_ICBI:
begin
case taicpu(p).oper[0]^.typ of
top_reg:
add_edge(getsupreg(taicpu(p).oper[0]^.reg),RS_R0);
top_ref:
if (taicpu(p).oper[0]^.ref^.base <> NR_NO) then
add_edge(getsupreg(taicpu(p).oper[1]^.ref^.base),RS_R0);
end;
end;
end;
end;
end;
{$endif user0}
end.
|
