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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
{
Copyright (c) 1998-2011 by Florian Klaempfl and Jonas Maebe
Generate JVM code for math 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 njvmmat;
{$i fpcdefs.inc}
interface
uses
node,nmat,ncgmat,ncghlmat;
type
tjvmmoddivnode = class(tmoddivnode)
protected
function use_moddiv64bitint_helper: boolean; override;
public
procedure pass_generate_code;override;
end;
tjvmshlshrnode = class(tshlshrnode)
procedure pass_generate_code;override;
end;
tjvmnotnode = class(tcghlnotnode)
end;
tjvmunaryminusnode = class(tcgunaryminusnode)
procedure second_float;override;
end;
implementation
uses
globtype,systems,constexp,
cutils,verbose,globals,compinnr,
symconst,symdef,
aasmbase,aasmcpu,aasmtai,aasmdata,
defutil,
cgbase,cgobj,pass_2,procinfo,
ncon,
cpubase,
hlcgobj,hlcgcpu,cgutils;
{*****************************************************************************
tjvmmoddivnode
*****************************************************************************}
function tjvmmoddivnode.use_moddiv64bitint_helper: boolean;
begin
result:=
(left.resultdef.typ=orddef) and
(right.resultdef.typ=orddef) and
((torddef(left.resultdef).ordtype=u64bit) or
(torddef(right.resultdef).ordtype=u64bit));
end;
procedure tjvmmoddivnode.pass_generate_code;
var
tmpreg: tregister;
lab: tasmlabel;
ovloc: tlocation;
op: topcg;
isu32int: boolean;
begin
secondpass(left);
secondpass(right);
location_reset(location,LOC_REGISTER,left.location.size);
location.register:=hlcg.getintregister(current_asmdata.CurrAsmList,resultdef);
if nodetype=divn then
begin
thlcgjvm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
if is_signed(resultdef) then
op:=OP_IDIV
else
op:=OP_DIV;
thlcgjvm(hlcg).a_op_loc_stack(current_asmdata.CurrAsmList,op,right.resultdef,right.location)
end
else
begin
{ must be handled via a helper }
if torddef(resultdef).ordtype=u64bit then
internalerror(2011010416);
if (torddef(resultdef).ordtype<>u32bit) then
begin
isu32int:=false;
thlcgjvm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
thlcgjvm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,right.resultdef,right.location);
end
else
begin
isu32int:=true;
if left.location.loc=LOC_CONSTANT then
thlcgjvm(hlcg).a_load_const_stack(current_asmdata.CurrAsmList,s64inttype,left.location.value,R_INTREGISTER)
else
begin
thlcgjvm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
thlcgjvm(hlcg).resize_stack_int_val(current_asmdata.CurrAsmList,u32inttype,s64inttype,false);
end;
if right.location.loc=LOC_CONSTANT then
thlcgjvm(hlcg).a_load_const_stack(current_asmdata.CurrAsmList,s64inttype,right.location.value,R_INTREGISTER)
else
begin
thlcgjvm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,right.resultdef,right.location);
thlcgjvm(hlcg).resize_stack_int_val(current_asmdata.CurrAsmList,u32inttype,s64inttype,false);
end;
end;
if isu32int or
(torddef(resultdef).ordtype=s64bit) then
begin
current_asmdata.CurrAsmList.concat(taicpu.op_none(a_lrem));
thlcgjvm(hlcg).decstack(current_asmdata.CurrAsmList,2);
end
else
begin
current_asmdata.CurrAsmList.concat(taicpu.op_none(a_irem));
thlcgjvm(hlcg).decstack(current_asmdata.CurrAsmList,1);
end;
if isu32int then
thlcgjvm(hlcg).resize_stack_int_val(current_asmdata.CurrAsmList,s64inttype,u32inttype,false);
end;
thlcgjvm(hlcg).a_load_stack_reg(current_asmdata.CurrAsmList,resultdef,location.register);
if (cs_check_overflow in current_settings.localswitches) and
is_signed(resultdef) then
begin
{ the JVM raises an exception for integer div-iby-zero -> only
overflow in case left is low(inttype) and right is -1 ->
check by adding high(inttype) to left and and'ing with right
-> result is -1 only in case above conditions are fulfilled)
}
tmpreg:=hlcg.getintregister(current_asmdata.CurrAsmList,resultdef);
hlcg.location_force_reg(current_asmdata.CurrAsmList,right.location,right.resultdef,resultdef,true);
hlcg.a_op_const_reg_reg(current_asmdata.CurrAsmList,OP_ADD,resultdef,torddef(resultdef).high,right.location.register,tmpreg);
hlcg.location_force_reg(current_asmdata.CurrAsmList,left.location,left.resultdef,resultdef,true);
hlcg.a_op_reg_reg(current_asmdata.CurrAsmList,OP_AND,resultdef,left.location.register,tmpreg);
current_asmdata.getjumplabel(lab);
hlcg.a_cmp_const_reg_label(current_asmdata.CurrAsmList,resultdef,OC_NE,-1,tmpreg,lab);
hlcg.g_call_system_proc(current_asmdata.CurrAsmList,'fpc_overflow',[],nil);
hlcg.a_label(current_asmdata.CurrAsmList,lab);
end;
end;
{*****************************************************************************
tjvmshlshrnode
*****************************************************************************}
procedure tjvmshlshrnode.pass_generate_code;
var
op : topcg;
begin
secondpass(left);
secondpass(right);
location_reset(location,LOC_REGISTER,left.location.size);
location.register:=hlcg.getintregister(current_asmdata.CurrAsmList,resultdef);
thlcgjvm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
if nodetype=shln then
op:=OP_SHL
else
op:=OP_SHR;
thlcgjvm(hlcg).a_op_loc_stack(current_asmdata.CurrAsmList,op,resultdef,right.location);
thlcgjvm(hlcg).a_load_stack_reg(current_asmdata.CurrAsmList,resultdef,location.register);
end;
{*****************************************************************************
tjvmunaryminustnode
*****************************************************************************}
procedure tjvmunaryminusnode.second_float;
var
opc: tasmop;
begin
secondpass(left);
location_reset(location,LOC_FPUREGISTER,def_cgsize(resultdef));
location.register:=hlcg.getfpuregister(current_asmdata.CurrAsmList,resultdef);
thlcgjvm(hlcg).a_load_loc_stack(current_asmdata.CurrAsmList,left.resultdef,left.location);
if (tfloatdef(left.resultdef).floattype=s32real) then
opc:=a_fneg
else
opc:=a_dneg;
current_asmdata.CurrAsmList.concat(taicpu.op_none(opc));
thlcgjvm(hlcg).a_load_stack_reg(current_asmdata.CurrAsmList,resultdef,location.register);
end;
begin
cmoddivnode:=tjvmmoddivnode;
cshlshrnode:=tjvmshlshrnode;
cnotnode:=tjvmnotnode;
cunaryminusnode:=tjvmunaryminusnode;
end.
|
