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Side by Side Diff: src/mips/simulator-mips.h

Issue 2752143003: [regexp] Remove remainder of native RegExpExecStub (Closed)
Patch Set: Fix non-sim arm64 and mips builds Created 3 years, 8 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 5
6 // Declares a Simulator for MIPS instructions if we are not generating a native 6 // Declares a Simulator for MIPS instructions if we are not generating a native
7 // MIPS binary. This Simulator allows us to run and debug MIPS code generation 7 // MIPS binary. This Simulator allows us to run and debug MIPS code generation
8 // on regular desktop machines. 8 // on regular desktop machines.
9 // V8 calls into generated code by "calling" the CALL_GENERATED_CODE macro, 9 // V8 calls into generated code by "calling" the CALL_GENERATED_CODE macro,
10 // which will start execution in the Simulator or forwards to the real entry 10 // which will start execution in the Simulator or forwards to the real entry
11 // on a MIPS HW platform. 11 // on a MIPS HW platform.
12 12
13 #ifndef V8_MIPS_SIMULATOR_MIPS_H_ 13 #ifndef V8_MIPS_SIMULATOR_MIPS_H_
14 #define V8_MIPS_SIMULATOR_MIPS_H_ 14 #define V8_MIPS_SIMULATOR_MIPS_H_
15 15
16 #include "src/allocation.h" 16 #include "src/allocation.h"
17 #include "src/mips/constants-mips.h" 17 #include "src/mips/constants-mips.h"
18 18
19 #if !defined(USE_SIMULATOR) 19 #if !defined(USE_SIMULATOR)
20 // Running without a simulator on a native mips platform. 20 // Running without a simulator on a native mips platform.
21 21
22 namespace v8 { 22 namespace v8 {
23 namespace internal { 23 namespace internal {
24 24
25 // When running without a simulator we call the entry directly. 25 // When running without a simulator we call the entry directly.
26 #define CALL_GENERATED_CODE(isolate, entry, p0, p1, p2, p3, p4) \ 26 #define CALL_GENERATED_CODE(isolate, entry, p0, p1, p2, p3, p4) \
27 entry(p0, p1, p2, p3, p4) 27 entry(p0, p1, p2, p3, p4)
28 28
29 typedef int (*mips_regexp_matcher)(String*, int, const byte*, const byte*, 29 typedef int (*mips_regexp_matcher)(String*, int, const byte*, const byte*, int*,
30 void*, int*, int, Address, int, Isolate*); 30 int, Address, int, Isolate*);
31
32 31
33 // Call the generated regexp code directly. The code at the entry address 32 // Call the generated regexp code directly. The code at the entry address
34 // should act as a function matching the type arm_regexp_matcher. 33 // should act as a function matching the type arm_regexp_matcher.
35 // The fifth argument is a dummy that reserves the space used for
36 // the return address added by the ExitFrame in native calls.
37 #define CALL_GENERATED_REGEXP_CODE(isolate, entry, p0, p1, p2, p3, p4, p5, p6, \ 34 #define CALL_GENERATED_REGEXP_CODE(isolate, entry, p0, p1, p2, p3, p4, p5, p6, \
38 p7, p8) \ 35 p7, p8) \
39 (FUNCTION_CAST<mips_regexp_matcher>(entry)(p0, p1, p2, p3, NULL, p4, p5, p6, \ 36 (FUNCTION_CAST<mips_regexp_matcher>(entry)(p0, p1, p2, p3, p4, p5, p6, p7, \
40 p7, p8)) 37 p8))
41 38
42 // The stack limit beyond which we will throw stack overflow errors in 39 // The stack limit beyond which we will throw stack overflow errors in
43 // generated code. Because generated code on mips uses the C stack, we 40 // generated code. Because generated code on mips uses the C stack, we
44 // just use the C stack limit. 41 // just use the C stack limit.
45 class SimulatorStack : public v8::internal::AllStatic { 42 class SimulatorStack : public v8::internal::AllStatic {
46 public: 43 public:
47 static inline uintptr_t JsLimitFromCLimit(Isolate* isolate, 44 static inline uintptr_t JsLimitFromCLimit(Isolate* isolate,
48 uintptr_t c_limit) { 45 uintptr_t c_limit) {
49 return c_limit; 46 return c_limit;
50 } 47 }
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523 520
524 521
525 // When running with the simulator transition into simulated execution at this 522 // When running with the simulator transition into simulated execution at this
526 // point. 523 // point.
527 #define CALL_GENERATED_CODE(isolate, entry, p0, p1, p2, p3, p4) \ 524 #define CALL_GENERATED_CODE(isolate, entry, p0, p1, p2, p3, p4) \
528 reinterpret_cast<Object*>(Simulator::current(isolate)->Call( \ 525 reinterpret_cast<Object*>(Simulator::current(isolate)->Call( \
529 FUNCTION_ADDR(entry), 5, p0, p1, p2, p3, p4)) 526 FUNCTION_ADDR(entry), 5, p0, p1, p2, p3, p4))
530 527
531 #define CALL_GENERATED_REGEXP_CODE(isolate, entry, p0, p1, p2, p3, p4, p5, p6, \ 528 #define CALL_GENERATED_REGEXP_CODE(isolate, entry, p0, p1, p2, p3, p4, p5, p6, \
532 p7, p8) \ 529 p7, p8) \
533 Simulator::current(isolate) \ 530 Simulator::current(isolate)->Call(entry, 9, p0, p1, p2, p3, p4, p5, p6, p7, \
534 ->Call(entry, 10, p0, p1, p2, p3, NULL, p4, p5, p6, p7, p8) 531 p8)
535
536 532
537 // The simulator has its own stack. Thus it has a different stack limit from 533 // The simulator has its own stack. Thus it has a different stack limit from
538 // the C-based native code. The JS-based limit normally points near the end of 534 // the C-based native code. The JS-based limit normally points near the end of
539 // the simulator stack. When the C-based limit is exhausted we reflect that by 535 // the simulator stack. When the C-based limit is exhausted we reflect that by
540 // lowering the JS-based limit as well, to make stack checks trigger. 536 // lowering the JS-based limit as well, to make stack checks trigger.
541 class SimulatorStack : public v8::internal::AllStatic { 537 class SimulatorStack : public v8::internal::AllStatic {
542 public: 538 public:
543 static inline uintptr_t JsLimitFromCLimit(Isolate* isolate, 539 static inline uintptr_t JsLimitFromCLimit(Isolate* isolate,
544 uintptr_t c_limit) { 540 uintptr_t c_limit) {
545 return Simulator::current(isolate)->StackLimit(c_limit); 541 return Simulator::current(isolate)->StackLimit(c_limit);
546 } 542 }
547 543
548 static inline uintptr_t RegisterCTryCatch(Isolate* isolate, 544 static inline uintptr_t RegisterCTryCatch(Isolate* isolate,
549 uintptr_t try_catch_address) { 545 uintptr_t try_catch_address) {
550 Simulator* sim = Simulator::current(isolate); 546 Simulator* sim = Simulator::current(isolate);
551 return sim->PushAddress(try_catch_address); 547 return sim->PushAddress(try_catch_address);
552 } 548 }
553 549
554 static inline void UnregisterCTryCatch(Isolate* isolate) { 550 static inline void UnregisterCTryCatch(Isolate* isolate) {
555 Simulator::current(isolate)->PopAddress(); 551 Simulator::current(isolate)->PopAddress();
556 } 552 }
557 }; 553 };
558 554
559 } // namespace internal 555 } // namespace internal
560 } // namespace v8 556 } // namespace v8
561 557
562 #endif // !defined(USE_SIMULATOR) 558 #endif // !defined(USE_SIMULATOR)
563 #endif // V8_MIPS_SIMULATOR_MIPS_H_ 559 #endif // V8_MIPS_SIMULATOR_MIPS_H_
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