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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" // NOLINT | 5 #include "vm/globals.h" // NOLINT |
6 #if defined(TARGET_ARCH_X64) | 6 #if defined(TARGET_ARCH_X64) |
7 | 7 |
8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
9 #include "vm/cpu.h" | 9 #include "vm/cpu.h" |
10 #include "vm/heap.h" | 10 #include "vm/heap.h" |
11 #include "vm/instructions.h" | 11 #include "vm/instructions.h" |
12 #include "vm/locations.h" | 12 #include "vm/locations.h" |
13 #include "vm/memory_region.h" | 13 #include "vm/memory_region.h" |
14 #include "vm/runtime_entry.h" | 14 #include "vm/runtime_entry.h" |
15 #include "vm/stack_frame.h" | 15 #include "vm/stack_frame.h" |
16 #include "vm/stub_code.h" | 16 #include "vm/stub_code.h" |
17 | 17 |
18 namespace dart { | 18 namespace dart { |
19 | 19 |
20 DECLARE_FLAG(bool, check_code_pointer); | 20 DECLARE_FLAG(bool, check_code_pointer); |
21 DECLARE_FLAG(bool, inline_alloc); | 21 DECLARE_FLAG(bool, inline_alloc); |
22 | 22 |
23 | 23 |
24 Assembler::Assembler(bool use_far_branches) | 24 Assembler::Assembler(bool use_far_branches) |
25 : buffer_(), | 25 : buffer_(), |
26 prologue_offset_(-1), | 26 prologue_offset_(-1), |
| 27 has_single_entry_point_(true), |
27 comments_(), | 28 comments_(), |
28 constant_pool_allowed_(false) { | 29 constant_pool_allowed_(false) { |
29 // Far branching mode is only needed and implemented for MIPS and ARM. | 30 // Far branching mode is only needed and implemented for MIPS and ARM. |
30 ASSERT(!use_far_branches); | 31 ASSERT(!use_far_branches); |
31 MonomorphicCheckedEntry(); | |
32 } | 32 } |
33 | 33 |
34 | 34 |
35 void Assembler::InitializeMemoryWithBreakpoints(uword data, intptr_t length) { | 35 void Assembler::InitializeMemoryWithBreakpoints(uword data, intptr_t length) { |
36 memset(reinterpret_cast<void*>(data), Instr::kBreakPointInstruction, length); | 36 memset(reinterpret_cast<void*>(data), Instr::kBreakPointInstruction, length); |
37 } | 37 } |
38 | 38 |
39 | 39 |
40 void Assembler::call(Register reg) { | 40 void Assembler::call(Register reg) { |
41 AssemblerBuffer::EnsureCapacity ensured(&buffer_); | 41 AssemblerBuffer::EnsureCapacity ensured(&buffer_); |
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3315 void Assembler::EnterStubFrame() { | 3315 void Assembler::EnterStubFrame() { |
3316 EnterDartFrame(0, kNoRegister); | 3316 EnterDartFrame(0, kNoRegister); |
3317 } | 3317 } |
3318 | 3318 |
3319 | 3319 |
3320 void Assembler::LeaveStubFrame() { | 3320 void Assembler::LeaveStubFrame() { |
3321 LeaveDartFrame(); | 3321 LeaveDartFrame(); |
3322 } | 3322 } |
3323 | 3323 |
3324 | 3324 |
3325 void Assembler::NoMonomorphicCheckedEntry() { | |
3326 buffer_.Reset(); | |
3327 for (intptr_t i = 0; i < Instructions::kCheckedEntryOffset; i++) { | |
3328 int3(); | |
3329 } | |
3330 ASSERT(CodeSize() == Instructions::kCheckedEntryOffset); | |
3331 } | |
3332 | |
3333 | |
3334 // RDI receiver, RBX guarded cid as Smi | 3325 // RDI receiver, RBX guarded cid as Smi |
3335 void Assembler::MonomorphicCheckedEntry() { | 3326 void Assembler::MonomorphicCheckedEntry() { |
| 3327 ASSERT(has_single_entry_point_); |
| 3328 has_single_entry_point_ = false; |
3336 Label immediate, have_cid, miss; | 3329 Label immediate, have_cid, miss; |
3337 Bind(&miss); | 3330 Bind(&miss); |
3338 jmp(Address(THR, Thread::monomorphic_miss_entry_offset())); | 3331 jmp(Address(THR, Thread::monomorphic_miss_entry_offset())); |
3339 | 3332 |
3340 Bind(&immediate); | 3333 Bind(&immediate); |
3341 movq(R10, Immediate(kSmiCid)); | 3334 movq(R10, Immediate(kSmiCid)); |
3342 jmp(&have_cid, kNearJump); | 3335 jmp(&have_cid, kNearJump); |
3343 | 3336 |
3344 Comment("MonomorphicCheckedEntry"); | 3337 Comment("MonomorphicCheckedEntry"); |
3345 ASSERT(CodeSize() == Instructions::kCheckedEntryOffset); | 3338 ASSERT(CodeSize() == Instructions::kCheckedEntryOffset); |
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3783 | 3776 |
3784 | 3777 |
3785 const char* Assembler::FpuRegisterName(FpuRegister reg) { | 3778 const char* Assembler::FpuRegisterName(FpuRegister reg) { |
3786 ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters)); | 3779 ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters)); |
3787 return xmm_reg_names[reg]; | 3780 return xmm_reg_names[reg]; |
3788 } | 3781 } |
3789 | 3782 |
3790 } // namespace dart | 3783 } // namespace dart |
3791 | 3784 |
3792 #endif // defined TARGET_ARCH_X64 | 3785 #endif // defined TARGET_ARCH_X64 |
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