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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
%def field(helper=""):
TODO
%def op_check_cast():
/*
* Check to see if a cast from one class to another is allowed.
*/
/* check-cast vAA, class@BBBB */
EXPORT_PC()
FETCH(a0, 1) # a0 <- BBBB
GET_OPA(a1) # a1 <- AA
EAS2(a1, rFP, a1) # a1 <- &object
lw a2, OFF_FP_METHOD(rFP) # a2 <- method
move a3, rSELF # a3 <- self
JAL(MterpCheckCast) # v0 <- CheckCast(index, &obj, method, self)
PREFETCH_INST(2)
bnez v0, MterpPossibleException
ADVANCE(2)
GET_INST_OPCODE(t0) # extract opcode from rINST
GOTO_OPCODE(t0) # jump to next instruction
%def op_iget(is_object="0", helper="MterpIGetU32"):
% field(helper=helper)
%def op_iget_boolean():
% op_iget(helper="MterpIGetU8")
%def op_iget_boolean_quick():
% op_iget_quick(load="lbu")
%def op_iget_byte():
% op_iget(helper="MterpIGetI8")
%def op_iget_byte_quick():
% op_iget_quick(load="lb")
%def op_iget_char():
% op_iget(helper="MterpIGetU16")
%def op_iget_char_quick():
% op_iget_quick(load="lhu")
%def op_iget_object():
% op_iget(is_object="1", helper="MterpIGetObj")
%def op_iget_object_quick():
/* For: iget-object-quick */
/* op vA, vB, offset@CCCC */
GET_OPB(a2) # a2 <- B
FETCH(a1, 1) # a1 <- field byte offset
EXPORT_PC()
GET_VREG(a0, a2) # a0 <- object we're operating on
JAL(artIGetObjectFromMterp) # v0 <- GetObj(obj, offset)
lw a3, THREAD_EXCEPTION_OFFSET(rSELF)
GET_OPA4(a2) # a2<- A+
PREFETCH_INST(2) # load rINST
bnez a3, MterpPossibleException # bail out
ADVANCE(2) # advance rPC
GET_INST_OPCODE(t0) # extract opcode from rINST
SET_VREG_OBJECT_GOTO(v0, a2, t0) # fp[A] <- v0
%def op_iget_quick(load="lw"):
/* For: iget-quick, iget-boolean-quick, iget-byte-quick, iget-char-quick, iget-short-quick */
/* op vA, vB, offset@CCCC */
GET_OPB(a2) # a2 <- B
GET_VREG(a3, a2) # a3 <- object we're operating on
FETCH(a1, 1) # a1 <- field byte offset
GET_OPA4(a2) # a2 <- A(+)
# check object for null
beqz a3, common_errNullObject # object was null
addu t0, a3, a1
$load a0, 0(t0) # a0 <- obj.field (8/16/32 bits)
FETCH_ADVANCE_INST(2) # advance rPC, load rINST
GET_INST_OPCODE(t0) # extract opcode from rINST
SET_VREG_GOTO(a0, a2, t0) # fp[A] <- a0
%def op_iget_short():
% op_iget(helper="MterpIGetI16")
%def op_iget_short_quick():
% op_iget_quick(load="lh")
%def op_iget_wide():
% op_iget(helper="MterpIGetU64")
%def op_iget_wide_quick():
/* iget-wide-quick vA, vB, offset@CCCC */
GET_OPB(a2) # a2 <- B
GET_VREG(a3, a2) # a3 <- object we're operating on
FETCH(a1, 1) # a1 <- field byte offset
GET_OPA4(a2) # a2 <- A(+)
# check object for null
beqz a3, common_errNullObject # object was null
addu t0, a3, a1 # t0 <- a3 + a1
LOAD64(a0, a1, t0) # a0 <- obj.field (64 bits, aligned)
FETCH_ADVANCE_INST(2) # advance rPC, load rINST
GET_INST_OPCODE(t0) # extract opcode from rINST
SET_VREG64_GOTO(a0, a1, a2, t0) # fp[A] <- a0/a1
%def op_instance_of():
/*
* Check to see if an object reference is an instance of a class.
*
* Most common situation is a non-null object, being compared against
* an already-resolved class.
*/
/* instance-of vA, vB, class@CCCC */
EXPORT_PC()
FETCH(a0, 1) # a0 <- CCCC
GET_OPB(a1) # a1 <- B
EAS2(a1, rFP, a1) # a1 <- &object
lw a2, OFF_FP_METHOD(rFP) # a2 <- method
move a3, rSELF # a3 <- self
GET_OPA4(rOBJ) # rOBJ <- A+
JAL(MterpInstanceOf) # v0 <- Mterp(index, &obj, method, self)
lw a1, THREAD_EXCEPTION_OFFSET(rSELF)
PREFETCH_INST(2) # load rINST
bnez a1, MterpException
ADVANCE(2) # advance rPC
GET_INST_OPCODE(t0) # extract opcode from rINST
SET_VREG_GOTO(v0, rOBJ, t0) # vA <- v0
%def op_iput(is_object="0", helper="MterpIPutU32"):
% field(helper=helper)
%def op_iput_boolean():
% op_iput(helper="MterpIPutU8")
%def op_iput_boolean_quick():
% op_iput_quick(store="sb")
%def op_iput_byte():
% op_iput(helper="MterpIPutI8")
%def op_iput_byte_quick():
% op_iput_quick(store="sb")
%def op_iput_char():
% op_iput(helper="MterpIPutU16")
%def op_iput_char_quick():
% op_iput_quick(store="sh")
%def op_iput_object():
% op_iput(is_object="1", helper="MterpIPutObj")
%def op_iput_object_quick():
/* For: iput-object-quick */
/* op vA, vB, offset@CCCC */
EXPORT_PC()
addu a0, rFP, OFF_FP_SHADOWFRAME
move a1, rPC
move a2, rINST
JAL(MterpIputObjectQuick)
beqz v0, MterpException
FETCH_ADVANCE_INST(2) # advance rPC, load rINST
GET_INST_OPCODE(t0) # extract opcode from rINST
GOTO_OPCODE(t0) # jump to next instruction
%def op_iput_quick(store="sw"):
/* For: iput-quick, iput-object-quick */
/* op vA, vB, offset@CCCC */
GET_OPB(a2) # a2 <- B
GET_VREG(a3, a2) # a3 <- fp[B], the object pointer
FETCH(a1, 1) # a1 <- field byte offset
GET_OPA4(a2) # a2 <- A(+)
beqz a3, common_errNullObject # object was null
GET_VREG(a0, a2) # a0 <- fp[A]
FETCH_ADVANCE_INST(2) # advance rPC, load rINST
addu t0, a3, a1
GET_INST_OPCODE(t1) # extract opcode from rINST
GET_OPCODE_TARGET(t1)
$store a0, 0(t0) # obj.field (8/16/32 bits) <- a0
JR(t1) # jump to next instruction
%def op_iput_short():
% op_iput(helper="MterpIPutI16")
%def op_iput_short_quick():
% op_iput_quick(store="sh")
%def op_iput_wide():
% op_iput(helper="MterpIPutU64")
%def op_iput_wide_quick():
/* iput-wide-quick vA, vB, offset@CCCC */
GET_OPA4(a0) # a0 <- A(+)
GET_OPB(a1) # a1 <- B
GET_VREG(a2, a1) # a2 <- fp[B], the object pointer
# check object for null
beqz a2, common_errNullObject # object was null
EAS2(a3, rFP, a0) # a3 <- &fp[A]
LOAD64(a0, a1, a3) # a0/a1 <- fp[A]
FETCH(a3, 1) # a3 <- field byte offset
FETCH_ADVANCE_INST(2) # advance rPC, load rINST
addu a2, a2, a3 # obj.field (64 bits, aligned) <- a0/a1
GET_INST_OPCODE(t0) # extract opcode from rINST
GET_OPCODE_TARGET(t0)
STORE64(a0, a1, a2) # obj.field (64 bits, aligned) <- a0/a1
JR(t0) # jump to next instruction
%def op_new_instance():
/*
* Create a new instance of a class.
*/
/* new-instance vAA, class@BBBB */
EXPORT_PC()
addu a0, rFP, OFF_FP_SHADOWFRAME
move a1, rSELF
move a2, rINST
JAL(MterpNewInstance)
beqz v0, MterpPossibleException
FETCH_ADVANCE_INST(2) # advance rPC, load rINST
GET_INST_OPCODE(t0) # extract opcode from rINST
GOTO_OPCODE(t0) # jump to next instruction
%def op_sget(is_object="0", helper="MterpSGetU32"):
% field(helper=helper)
%def op_sget_boolean():
% op_sget(helper="MterpSGetU8")
%def op_sget_byte():
% op_sget(helper="MterpSGetI8")
%def op_sget_char():
% op_sget(helper="MterpSGetU16")
%def op_sget_object():
% op_sget(is_object="1", helper="MterpSGetObj")
%def op_sget_short():
% op_sget(helper="MterpSGetI16")
%def op_sget_wide():
% op_sget(helper="MterpSGetU64")
%def op_sput(is_object="0", helper="MterpSPutU32"):
% field(helper=helper)
%def op_sput_boolean():
% op_sput(helper="MterpSPutU8")
%def op_sput_byte():
% op_sput(helper="MterpSPutI8")
%def op_sput_char():
% op_sput(helper="MterpSPutU16")
%def op_sput_object():
% op_sput(is_object="1", helper="MterpSPutObj")
%def op_sput_short():
% op_sput(helper="MterpSPutI16")
%def op_sput_wide():
% op_sput(helper="MterpSPutU64")
|
