2 * Copyright (C) 2011 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef ART_RUNTIME_DEX_INSTRUCTION_INL_H_
18 #define ART_RUNTIME_DEX_INSTRUCTION_INL_H_
20 #include "dex_instruction.h"
24 //------------------------------------------------------------------------------
26 //------------------------------------------------------------------------------
27 inline bool Instruction::HasVRegA() const {
28 switch (FormatOf(Opcode())) {
29 case k10t: return true;
30 case k10x: return true;
31 case k11n: return true;
32 case k11x: return true;
33 case k12x: return true;
34 case k20t: return true;
35 case k21c: return true;
36 case k21h: return true;
37 case k21s: return true;
38 case k21t: return true;
39 case k22b: return true;
40 case k22c: return true;
41 case k22s: return true;
42 case k22t: return true;
43 case k22x: return true;
44 case k23x: return true;
45 case k30t: return true;
46 case k31c: return true;
47 case k31i: return true;
48 case k31t: return true;
49 case k32x: return true;
50 case k35c: return true;
51 case k3rc: return true;
52 case k51l: return true;
53 default: return false;
57 inline int32_t Instruction::VRegA() const {
58 switch (FormatOf(Opcode())) {
59 case k10t: return VRegA_10t();
60 case k10x: return VRegA_10x();
61 case k11n: return VRegA_11n();
62 case k11x: return VRegA_11x();
63 case k12x: return VRegA_12x();
64 case k20t: return VRegA_20t();
65 case k21c: return VRegA_21c();
66 case k21h: return VRegA_21h();
67 case k21s: return VRegA_21s();
68 case k21t: return VRegA_21t();
69 case k22b: return VRegA_22b();
70 case k22c: return VRegA_22c();
71 case k22s: return VRegA_22s();
72 case k22t: return VRegA_22t();
73 case k22x: return VRegA_22x();
74 case k23x: return VRegA_23x();
75 case k30t: return VRegA_30t();
76 case k31c: return VRegA_31c();
77 case k31i: return VRegA_31i();
78 case k31t: return VRegA_31t();
79 case k32x: return VRegA_32x();
80 case k35c: return VRegA_35c();
81 case k3rc: return VRegA_3rc();
82 case k51l: return VRegA_51l();
84 LOG(FATAL) << "Tried to access vA of instruction " << Name() << " which has no A operand.";
89 inline int8_t Instruction::VRegA_10t(uint16_t inst_data) const {
90 DCHECK_EQ(FormatOf(Opcode()), k10t);
91 return static_cast<int8_t>(InstAA(inst_data));
94 inline uint8_t Instruction::VRegA_10x(uint16_t inst_data) const {
95 DCHECK_EQ(FormatOf(Opcode()), k10x);
96 return InstAA(inst_data);
99 inline uint4_t Instruction::VRegA_11n(uint16_t inst_data) const {
100 DCHECK_EQ(FormatOf(Opcode()), k11n);
101 return InstA(inst_data);
104 inline uint8_t Instruction::VRegA_11x(uint16_t inst_data) const {
105 DCHECK_EQ(FormatOf(Opcode()), k11x);
106 return InstAA(inst_data);
109 inline uint4_t Instruction::VRegA_12x(uint16_t inst_data) const {
110 DCHECK_EQ(FormatOf(Opcode()), k12x);
111 return InstA(inst_data);
114 inline int16_t Instruction::VRegA_20t() const {
115 DCHECK_EQ(FormatOf(Opcode()), k20t);
116 return static_cast<int16_t>(Fetch16(1));
119 inline uint8_t Instruction::VRegA_21c(uint16_t inst_data) const {
120 DCHECK_EQ(FormatOf(Opcode()), k21c);
121 return InstAA(inst_data);
124 inline uint8_t Instruction::VRegA_21h(uint16_t inst_data) const {
125 DCHECK_EQ(FormatOf(Opcode()), k21h);
126 return InstAA(inst_data);
129 inline uint8_t Instruction::VRegA_21s(uint16_t inst_data) const {
130 DCHECK_EQ(FormatOf(Opcode()), k21s);
131 return InstAA(inst_data);
134 inline uint8_t Instruction::VRegA_21t(uint16_t inst_data) const {
135 DCHECK_EQ(FormatOf(Opcode()), k21t);
136 return InstAA(inst_data);
139 inline uint8_t Instruction::VRegA_22b(uint16_t inst_data) const {
140 DCHECK_EQ(FormatOf(Opcode()), k22b);
141 return InstAA(inst_data);
144 inline uint4_t Instruction::VRegA_22c(uint16_t inst_data) const {
145 DCHECK_EQ(FormatOf(Opcode()), k22c);
146 return InstA(inst_data);
149 inline uint4_t Instruction::VRegA_22s(uint16_t inst_data) const {
150 DCHECK_EQ(FormatOf(Opcode()), k22s);
151 return InstA(inst_data);
154 inline uint4_t Instruction::VRegA_22t(uint16_t inst_data) const {
155 DCHECK_EQ(FormatOf(Opcode()), k22t);
156 return InstA(inst_data);
159 inline uint8_t Instruction::VRegA_22x(uint16_t inst_data) const {
160 DCHECK_EQ(FormatOf(Opcode()), k22x);
161 return InstAA(inst_data);
164 inline uint8_t Instruction::VRegA_23x(uint16_t inst_data) const {
165 DCHECK_EQ(FormatOf(Opcode()), k23x);
166 return InstAA(inst_data);
169 inline int32_t Instruction::VRegA_30t() const {
170 DCHECK_EQ(FormatOf(Opcode()), k30t);
171 return static_cast<int32_t>(Fetch32(1));
174 inline uint8_t Instruction::VRegA_31c(uint16_t inst_data) const {
175 DCHECK_EQ(FormatOf(Opcode()), k31c);
176 return InstAA(inst_data);
179 inline uint8_t Instruction::VRegA_31i(uint16_t inst_data) const {
180 DCHECK_EQ(FormatOf(Opcode()), k31i);
181 return InstAA(inst_data);
184 inline uint8_t Instruction::VRegA_31t(uint16_t inst_data) const {
185 DCHECK_EQ(FormatOf(Opcode()), k31t);
186 return InstAA(inst_data);
189 inline uint16_t Instruction::VRegA_32x() const {
190 DCHECK_EQ(FormatOf(Opcode()), k32x);
194 inline uint4_t Instruction::VRegA_35c(uint16_t inst_data) const {
195 DCHECK_EQ(FormatOf(Opcode()), k35c);
196 return InstB(inst_data); // This is labeled A in the spec.
199 inline uint8_t Instruction::VRegA_3rc(uint16_t inst_data) const {
200 DCHECK_EQ(FormatOf(Opcode()), k3rc);
201 return InstAA(inst_data);
204 inline uint8_t Instruction::VRegA_51l(uint16_t inst_data) const {
205 DCHECK_EQ(FormatOf(Opcode()), k51l);
206 return InstAA(inst_data);
209 //------------------------------------------------------------------------------
211 //------------------------------------------------------------------------------
212 inline bool Instruction::HasVRegB() const {
213 switch (FormatOf(Opcode())) {
214 case k11n: return true;
215 case k12x: return true;
216 case k21c: return true;
217 case k21h: return true;
218 case k21s: return true;
219 case k21t: return true;
220 case k22b: return true;
221 case k22c: return true;
222 case k22s: return true;
223 case k22t: return true;
224 case k22x: return true;
225 case k23x: return true;
226 case k25x: return true;
227 case k31c: return true;
228 case k31i: return true;
229 case k31t: return true;
230 case k32x: return true;
231 case k35c: return true;
232 case k3rc: return true;
233 case k51l: return true;
234 default: return false;
238 inline bool Instruction::HasWideVRegB() const {
239 return FormatOf(Opcode()) == k51l;
242 inline int32_t Instruction::VRegB() const {
243 switch (FormatOf(Opcode())) {
244 case k11n: return VRegB_11n();
245 case k12x: return VRegB_12x();
246 case k21c: return VRegB_21c();
247 case k21h: return VRegB_21h();
248 case k21s: return VRegB_21s();
249 case k21t: return VRegB_21t();
250 case k22b: return VRegB_22b();
251 case k22c: return VRegB_22c();
252 case k22s: return VRegB_22s();
253 case k22t: return VRegB_22t();
254 case k22x: return VRegB_22x();
255 case k23x: return VRegB_23x();
256 case k25x: return VRegB_25x();
257 case k31c: return VRegB_31c();
258 case k31i: return VRegB_31i();
259 case k31t: return VRegB_31t();
260 case k32x: return VRegB_32x();
261 case k35c: return VRegB_35c();
262 case k3rc: return VRegB_3rc();
263 case k51l: return VRegB_51l();
265 LOG(FATAL) << "Tried to access vB of instruction " << Name() << " which has no B operand.";
270 inline uint64_t Instruction::WideVRegB() const {
274 inline int4_t Instruction::VRegB_11n(uint16_t inst_data) const {
275 DCHECK_EQ(FormatOf(Opcode()), k11n);
276 return static_cast<int4_t>((InstB(inst_data) << 28) >> 28);
279 inline uint4_t Instruction::VRegB_12x(uint16_t inst_data) const {
280 DCHECK_EQ(FormatOf(Opcode()), k12x);
281 return InstB(inst_data);
284 inline uint16_t Instruction::VRegB_21c() const {
285 DCHECK_EQ(FormatOf(Opcode()), k21c);
289 inline uint16_t Instruction::VRegB_21h() const {
290 DCHECK_EQ(FormatOf(Opcode()), k21h);
294 inline int16_t Instruction::VRegB_21s() const {
295 DCHECK_EQ(FormatOf(Opcode()), k21s);
296 return static_cast<int16_t>(Fetch16(1));
299 inline int16_t Instruction::VRegB_21t() const {
300 DCHECK_EQ(FormatOf(Opcode()), k21t);
301 return static_cast<int16_t>(Fetch16(1));
304 inline uint8_t Instruction::VRegB_22b() const {
305 DCHECK_EQ(FormatOf(Opcode()), k22b);
306 return static_cast<uint8_t>(Fetch16(1) & 0xff);
309 inline uint4_t Instruction::VRegB_22c(uint16_t inst_data) const {
310 DCHECK_EQ(FormatOf(Opcode()), k22c);
311 return InstB(inst_data);
314 inline uint4_t Instruction::VRegB_22s(uint16_t inst_data) const {
315 DCHECK_EQ(FormatOf(Opcode()), k22s);
316 return InstB(inst_data);
319 inline uint4_t Instruction::VRegB_22t(uint16_t inst_data) const {
320 DCHECK_EQ(FormatOf(Opcode()), k22t);
321 return InstB(inst_data);
324 inline uint16_t Instruction::VRegB_22x() const {
325 DCHECK_EQ(FormatOf(Opcode()), k22x);
329 inline uint8_t Instruction::VRegB_23x() const {
330 DCHECK_EQ(FormatOf(Opcode()), k23x);
331 return static_cast<uint8_t>(Fetch16(1) & 0xff);
334 // Number of additional registers in this instruction. # of var arg registers = this value + 1.
335 inline uint4_t Instruction::VRegB_25x() const {
336 DCHECK_EQ(FormatOf(Opcode()), k25x);
337 return InstB(Fetch16(0));
340 inline uint32_t Instruction::VRegB_31c() const {
341 DCHECK_EQ(FormatOf(Opcode()), k31c);
345 inline int32_t Instruction::VRegB_31i() const {
346 DCHECK_EQ(FormatOf(Opcode()), k31i);
347 return static_cast<int32_t>(Fetch32(1));
350 inline int32_t Instruction::VRegB_31t() const {
351 DCHECK_EQ(FormatOf(Opcode()), k31t);
352 return static_cast<int32_t>(Fetch32(1));
355 inline uint16_t Instruction::VRegB_32x() const {
356 DCHECK_EQ(FormatOf(Opcode()), k32x);
360 inline uint16_t Instruction::VRegB_35c() const {
361 DCHECK_EQ(FormatOf(Opcode()), k35c);
365 inline uint16_t Instruction::VRegB_3rc() const {
366 DCHECK_EQ(FormatOf(Opcode()), k3rc);
370 inline uint64_t Instruction::VRegB_51l() const {
371 DCHECK_EQ(FormatOf(Opcode()), k51l);
372 uint64_t vB_wide = Fetch32(1) | ((uint64_t) Fetch32(3) << 32);
376 //------------------------------------------------------------------------------
378 //------------------------------------------------------------------------------
379 inline bool Instruction::HasVRegC() const {
380 switch (FormatOf(Opcode())) {
381 case k22b: return true;
382 case k22c: return true;
383 case k22s: return true;
384 case k22t: return true;
385 case k23x: return true;
386 case k25x: return true;
387 case k35c: return true;
388 case k3rc: return true;
389 default: return false;
393 inline int32_t Instruction::VRegC() const {
394 switch (FormatOf(Opcode())) {
395 case k22b: return VRegC_22b();
396 case k22c: return VRegC_22c();
397 case k22s: return VRegC_22s();
398 case k22t: return VRegC_22t();
399 case k23x: return VRegC_23x();
400 case k25x: return VRegC_25x();
401 case k35c: return VRegC_35c();
402 case k3rc: return VRegC_3rc();
404 LOG(FATAL) << "Tried to access vC of instruction " << Name() << " which has no C operand.";
409 inline int8_t Instruction::VRegC_22b() const {
410 DCHECK_EQ(FormatOf(Opcode()), k22b);
411 return static_cast<int8_t>(Fetch16(1) >> 8);
414 inline uint16_t Instruction::VRegC_22c() const {
415 DCHECK_EQ(FormatOf(Opcode()), k22c);
419 inline int16_t Instruction::VRegC_22s() const {
420 DCHECK_EQ(FormatOf(Opcode()), k22s);
421 return static_cast<int16_t>(Fetch16(1));
424 inline int16_t Instruction::VRegC_22t() const {
425 DCHECK_EQ(FormatOf(Opcode()), k22t);
426 return static_cast<int16_t>(Fetch16(1));
429 inline uint8_t Instruction::VRegC_23x() const {
430 DCHECK_EQ(FormatOf(Opcode()), k23x);
431 return static_cast<uint8_t>(Fetch16(1) >> 8);
434 inline uint4_t Instruction::VRegC_25x() const {
435 DCHECK_EQ(FormatOf(Opcode()), k25x);
436 return static_cast<uint4_t>(Fetch16(1) & 0xf);
439 inline uint4_t Instruction::VRegC_35c() const {
440 DCHECK_EQ(FormatOf(Opcode()), k35c);
441 return static_cast<uint4_t>(Fetch16(2) & 0x0f);
444 inline uint16_t Instruction::VRegC_3rc() const {
445 DCHECK_EQ(FormatOf(Opcode()), k3rc);
449 inline bool Instruction::HasVarArgs35c() const {
450 return FormatOf(Opcode()) == k35c;
453 inline bool Instruction::HasVarArgs25x() const {
454 return FormatOf(Opcode()) == k25x;
457 // Copies all of the parameter registers into the arg array. Check the length with VRegB_25x()+2.
458 inline void Instruction::GetAllArgs25x(uint32_t (&arg)[kMaxVarArgRegs25x]) const {
459 DCHECK_EQ(FormatOf(Opcode()), k25x);
462 * The opcode looks like this:
463 * op vC, {vD, vE, vF, vG}
465 * and vB is the (implicit) register count (0-4) which denotes how far from vD to vG to read.
467 * vC is always present, so with "op vC, {}" the register count will be 0 even though vC
470 * The exact semantic meanings of vC:vG is up to the instruction using the format.
472 * Encoding drawing as a bit stream:
473 * (Note that each uint16 is little endian, and each register takes up 4 bits)
477 * |------|-----|||-----|-----|
478 * |opcode|vB|vG|||vD|vC|vF|vE|
479 * |------|-----|||-----|-----|
481 uint16_t reg_list = Fetch16(1);
482 uint4_t count = VRegB_25x();
483 DCHECK_LE(count, 4U) << "Invalid arg count in 25x (" << count << ")";
486 * TODO(iam): Change instruction encoding to one of:
488 * - (X) vA = args count, vB = closure register, {vC..vG} = args (25x)
489 * - (Y) vA = args count, vB = method index, {vC..vG} = args (35x)
491 * (do this in conjunction with adding verifier support for invoke-lambda)
495 * Copy the argument registers into the arg[] array, and
496 * also copy the first argument into vC. (The
497 * DecodedInstruction structure doesn't have separate
498 * fields for {vD, vE, vF, vG}, so there's no need to make
499 * copies of those.) Note that all cases fall-through.
503 arg[5] = (Fetch16(0) >> 8) & 0x0f; // vG
504 FALLTHROUGH_INTENDED;
506 arg[4] = (reg_list >> 12) & 0x0f; // vF
507 FALLTHROUGH_INTENDED;
509 arg[3] = (reg_list >> 8) & 0x0f; // vE
510 FALLTHROUGH_INTENDED;
512 arg[2] = (reg_list >> 4) & 0x0f; // vD
513 FALLTHROUGH_INTENDED;
515 // The required lambda 'this' is actually a pair, but the pair is implicit.
516 arg[0] = VRegC_25x(); // vC
517 arg[1] = arg[0] + 1; // vC + 1
522 inline void Instruction::GetVarArgs(uint32_t arg[kMaxVarArgRegs], uint16_t inst_data) const {
523 DCHECK_EQ(FormatOf(Opcode()), k35c);
526 * Note that the fields mentioned in the spec don't appear in
527 * their "usual" positions here compared to most formats. This
528 * was done so that the field names for the argument count and
529 * reference index match between this format and the corresponding
530 * range formats (3rc and friends).
532 * Bottom line: The argument count is always in vA, and the
533 * method constant (or equivalent) is always in vB.
535 uint16_t regList = Fetch16(2);
536 uint4_t count = InstB(inst_data); // This is labeled A in the spec.
537 DCHECK_LE(count, 5U) << "Invalid arg count in 35c (" << count << ")";
540 * Copy the argument registers into the arg[] array, and
541 * also copy the first argument (if any) into vC. (The
542 * DecodedInstruction structure doesn't have separate
543 * fields for {vD, vE, vF, vG}, so there's no need to make
544 * copies of those.) Note that cases 5..2 fall through.
548 arg[4] = InstA(inst_data);
549 FALLTHROUGH_INTENDED;
551 arg[3] = (regList >> 12) & 0x0f;
552 FALLTHROUGH_INTENDED;
554 arg[2] = (regList >> 8) & 0x0f;
555 FALLTHROUGH_INTENDED;
557 arg[1] = (regList >> 4) & 0x0f;
558 FALLTHROUGH_INTENDED;
560 arg[0] = regList & 0x0f;
563 break; // Valid, but no need to do anything.
569 #endif // ART_RUNTIME_DEX_INSTRUCTION_INL_H_