yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
rossberg@chromium.org | 3484964 | 2014-04-29 16:30:47 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4 | |
machenbach@chromium.org | 196eb60 | 2014-06-04 00:06:13 +0000 | [diff] [blame] | 5 | #include "src/v8.h" |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6 | |
jkummerow@chromium.org | 93a47f4 | 2013-07-02 14:43:41 +0000 | [diff] [blame] | 7 | #if V8_TARGET_ARCH_X64 |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 8 | |
machenbach@chromium.org | 196eb60 | 2014-06-04 00:06:13 +0000 | [diff] [blame] | 9 | #include "src/codegen.h" |
| 10 | #include "src/deoptimizer.h" |
| 11 | #include "src/full-codegen.h" |
| 12 | #include "src/safepoint-table.h" |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | |
| 17 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 18 | const int Deoptimizer::table_entry_size_ = 10; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 19 | |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 20 | |
| 21 | int Deoptimizer::patch_size() { |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 22 | return Assembler::kCallSequenceLength; |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 23 | } |
| 24 | |
| 25 | |
jkummerow@chromium.org | fb732b1 | 2013-07-26 10:27:09 +0000 | [diff] [blame] | 26 | void Deoptimizer::PatchCodeForDeoptimization(Isolate* isolate, Code* code) { |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 27 | // Invalidate the relocation information, as it will become invalid by the |
| 28 | // code patching below, and is not needed any more. |
| 29 | code->InvalidateRelocation(); |
| 30 | |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 31 | if (FLAG_zap_code_space) { |
| 32 | // Fail hard and early if we enter this code object again. |
| 33 | byte* pointer = code->FindCodeAgeSequence(); |
| 34 | if (pointer != NULL) { |
| 35 | pointer += kNoCodeAgeSequenceLength; |
| 36 | } else { |
| 37 | pointer = code->instruction_start(); |
| 38 | } |
| 39 | CodePatcher patcher(pointer, 1); |
| 40 | patcher.masm()->int3(); |
| 41 | |
| 42 | DeoptimizationInputData* data = |
| 43 | DeoptimizationInputData::cast(code->deoptimization_data()); |
| 44 | int osr_offset = data->OsrPcOffset()->value(); |
| 45 | if (osr_offset > 0) { |
| 46 | CodePatcher osr_patcher(code->instruction_start() + osr_offset, 1); |
| 47 | osr_patcher.masm()->int3(); |
| 48 | } |
| 49 | } |
| 50 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 51 | // For each LLazyBailout instruction insert a absolute call to the |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 52 | // corresponding deoptimization entry, or a short call to an absolute |
| 53 | // jump if space is short. The absolute jumps are put in a table just |
| 54 | // before the safepoint table (space was allocated there when the Code |
| 55 | // object was created, if necessary). |
| 56 | |
jkummerow@chromium.org | fb732b1 | 2013-07-26 10:27:09 +0000 | [diff] [blame] | 57 | Address instruction_start = code->instruction_start(); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 58 | #ifdef DEBUG |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 59 | Address prev_call_address = NULL; |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 60 | #endif |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 61 | DeoptimizationInputData* deopt_data = |
| 62 | DeoptimizationInputData::cast(code->deoptimization_data()); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 63 | SharedFunctionInfo* shared = |
| 64 | SharedFunctionInfo::cast(deopt_data->SharedFunctionInfo()); |
| 65 | shared->EvictFromOptimizedCodeMap(code, "deoptimized code"); |
| 66 | deopt_data->SetSharedFunctionInfo(Smi::FromInt(0)); |
| 67 | // For each LLazyBailout instruction insert a call to the corresponding |
| 68 | // deoptimization entry. |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 69 | for (int i = 0; i < deopt_data->DeoptCount(); i++) { |
| 70 | if (deopt_data->Pc(i)->value() == -1) continue; |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 71 | // Position where Call will be patched in. |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 72 | Address call_address = instruction_start + deopt_data->Pc(i)->value(); |
| 73 | // There is room enough to write a long call instruction because we pad |
| 74 | // LLazyBailout instructions with nops if necessary. |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 75 | CodePatcher patcher(call_address, Assembler::kCallSequenceLength); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 76 | patcher.masm()->Call(GetDeoptimizationEntry(isolate, i, LAZY), |
machenbach@chromium.org | af4fba3 | 2014-01-27 01:05:32 +0000 | [diff] [blame] | 77 | Assembler::RelocInfoNone()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 78 | ASSERT(prev_call_address == NULL || |
| 79 | call_address >= prev_call_address + patch_size()); |
| 80 | ASSERT(call_address + patch_size() <= code->instruction_end()); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 81 | #ifdef DEBUG |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 82 | prev_call_address = call_address; |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 83 | #endif |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 84 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 88 | void Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) { |
| 89 | // Set the register values. The values are not important as there are no |
| 90 | // callee saved registers in JavaScript frames, so all registers are |
| 91 | // spilled. Registers rbp and rsp are set to the correct values though. |
| 92 | for (int i = 0; i < Register::kNumRegisters; i++) { |
| 93 | input_->SetRegister(i, i * 4); |
| 94 | } |
| 95 | input_->SetRegister(rsp.code(), reinterpret_cast<intptr_t>(frame->sp())); |
| 96 | input_->SetRegister(rbp.code(), reinterpret_cast<intptr_t>(frame->fp())); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 97 | for (int i = 0; i < DoubleRegister::NumAllocatableRegisters(); i++) { |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 98 | input_->SetDoubleRegister(i, 0.0); |
| 99 | } |
| 100 | |
| 101 | // Fill the frame content from the actual data on the frame. |
| 102 | for (unsigned i = 0; i < input_->GetFrameSize(); i += kPointerSize) { |
bmeurer@chromium.org | 25530ce | 2014-02-07 09:11:16 +0000 | [diff] [blame] | 103 | input_->SetFrameSlot(i, Memory::uintptr_at(tos + i)); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 104 | } |
| 105 | } |
| 106 | |
| 107 | |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 108 | void Deoptimizer::SetPlatformCompiledStubRegisters( |
| 109 | FrameDescription* output_frame, CodeStubInterfaceDescriptor* descriptor) { |
| 110 | intptr_t handler = |
| 111 | reinterpret_cast<intptr_t>(descriptor->deoptimization_handler_); |
machenbach@chromium.org | 0cc0950 | 2013-11-13 12:20:55 +0000 | [diff] [blame] | 112 | int params = descriptor->GetHandlerParameterCount(); |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 113 | output_frame->SetRegister(rax.code(), params); |
| 114 | output_frame->SetRegister(rbx.code(), handler); |
| 115 | } |
| 116 | |
| 117 | |
| 118 | void Deoptimizer::CopyDoubleRegisters(FrameDescription* output_frame) { |
| 119 | for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) { |
| 120 | double double_value = input_->GetDoubleRegister(i); |
| 121 | output_frame->SetDoubleRegister(i, double_value); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | |
jkummerow@chromium.org | 4e308cf | 2013-05-17 13:39:16 +0000 | [diff] [blame] | 126 | bool Deoptimizer::HasAlignmentPadding(JSFunction* function) { |
| 127 | // There is no dynamic alignment padding on x64 in the input frame. |
| 128 | return false; |
| 129 | } |
| 130 | |
| 131 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 132 | #define __ masm()-> |
| 133 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 134 | void Deoptimizer::EntryGenerator::Generate() { |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 135 | GeneratePrologue(); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 136 | |
| 137 | // Save all general purpose registers before messing with them. |
| 138 | const int kNumberOfRegisters = Register::kNumRegisters; |
| 139 | |
| 140 | const int kDoubleRegsSize = kDoubleSize * |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 141 | XMMRegister::NumAllocatableRegisters(); |
machenbach@chromium.org | fa0c3c6 | 2014-03-24 08:11:09 +0000 | [diff] [blame] | 142 | __ subp(rsp, Immediate(kDoubleRegsSize)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 143 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 144 | for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) { |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 145 | XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i); |
| 146 | int offset = i * kDoubleSize; |
| 147 | __ movsd(Operand(rsp, offset), xmm_reg); |
| 148 | } |
| 149 | |
| 150 | // We push all registers onto the stack, even though we do not need |
| 151 | // to restore all later. |
| 152 | for (int i = 0; i < kNumberOfRegisters; i++) { |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 153 | Register r = Register::from_code(i); |
machenbach@chromium.org | 763da4c | 2014-03-19 10:48:37 +0000 | [diff] [blame] | 154 | __ pushq(r); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 155 | } |
| 156 | |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 157 | const int kSavedRegistersAreaSize = kNumberOfRegisters * kRegisterSize + |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 158 | kDoubleRegsSize; |
| 159 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 160 | // We use this to keep the value of the fifth argument temporarily. |
| 161 | // Unfortunately we can't store it directly in r8 (used for passing |
| 162 | // this on linux), since it is another parameter passing register on windows. |
| 163 | Register arg5 = r11; |
| 164 | |
| 165 | // Get the bailout id from the stack. |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 166 | __ movp(arg_reg_3, Operand(rsp, kSavedRegistersAreaSize)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 167 | |
danno@chromium.org | 169691d | 2013-07-15 08:01:13 +0000 | [diff] [blame] | 168 | // Get the address of the location in the code object |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 169 | // and compute the fp-to-sp delta in register arg5. |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 170 | __ movp(arg_reg_4, Operand(rsp, kSavedRegistersAreaSize + 1 * kRegisterSize)); |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 171 | __ leap(arg5, Operand(rsp, kSavedRegistersAreaSize + 1 * kRegisterSize + |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 172 | kPCOnStackSize)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 173 | |
machenbach@chromium.org | fa0c3c6 | 2014-03-24 08:11:09 +0000 | [diff] [blame] | 174 | __ subp(arg5, rbp); |
machenbach@chromium.org | 7a1bfbe | 2014-03-26 12:42:48 +0000 | [diff] [blame] | 175 | __ negp(arg5); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 176 | |
| 177 | // Allocate a new deoptimizer object. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 178 | __ PrepareCallCFunction(6); |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 179 | __ movp(rax, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); |
| 180 | __ movp(arg_reg_1, rax); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 181 | __ Set(arg_reg_2, type()); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 182 | // Args 3 and 4 are already in the right registers. |
| 183 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 184 | // On windows put the arguments on the stack (PrepareCallCFunction |
| 185 | // has created space for this). On linux pass the arguments in r8 and r9. |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 186 | #ifdef _WIN64 |
machenbach@chromium.org | af4fba3 | 2014-01-27 01:05:32 +0000 | [diff] [blame] | 187 | __ movq(Operand(rsp, 4 * kRegisterSize), arg5); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 188 | __ LoadAddress(arg5, ExternalReference::isolate_address(isolate())); |
machenbach@chromium.org | af4fba3 | 2014-01-27 01:05:32 +0000 | [diff] [blame] | 189 | __ movq(Operand(rsp, 5 * kRegisterSize), arg5); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 190 | #else |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 191 | __ movp(r8, arg5); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 192 | __ LoadAddress(r9, ExternalReference::isolate_address(isolate())); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 193 | #endif |
| 194 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 195 | { AllowExternalCallThatCantCauseGC scope(masm()); |
| 196 | __ CallCFunction(ExternalReference::new_deoptimizer_function(isolate()), 6); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 197 | } |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 198 | // Preserve deoptimizer object in register rax and get the input |
| 199 | // frame descriptor pointer. |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 200 | __ movp(rbx, Operand(rax, Deoptimizer::input_offset())); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 201 | |
| 202 | // Fill in the input registers. |
| 203 | for (int i = kNumberOfRegisters -1; i >= 0; i--) { |
| 204 | int offset = (i * kPointerSize) + FrameDescription::registers_offset(); |
machenbach@chromium.org | a86d416 | 2014-05-01 00:05:11 +0000 | [diff] [blame] | 205 | __ PopQuad(Operand(rbx, offset)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 206 | } |
| 207 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 208 | // Fill in the double input registers. |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 209 | int double_regs_offset = FrameDescription::double_registers_offset(); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 210 | for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); i++) { |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 211 | int dst_offset = i * kDoubleSize + double_regs_offset; |
machenbach@chromium.org | 763da4c | 2014-03-19 10:48:37 +0000 | [diff] [blame] | 212 | __ popq(Operand(rbx, dst_offset)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 213 | } |
| 214 | |
danno@chromium.org | 169691d | 2013-07-15 08:01:13 +0000 | [diff] [blame] | 215 | // Remove the bailout id and return address from the stack. |
machenbach@chromium.org | fa0c3c6 | 2014-03-24 08:11:09 +0000 | [diff] [blame] | 216 | __ addp(rsp, Immediate(1 * kRegisterSize + kPCOnStackSize)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 217 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 218 | // Compute a pointer to the unwinding limit in register rcx; that is |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 219 | // the first stack slot not part of the input frame. |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 220 | __ movp(rcx, Operand(rbx, FrameDescription::frame_size_offset())); |
machenbach@chromium.org | fa0c3c6 | 2014-03-24 08:11:09 +0000 | [diff] [blame] | 221 | __ addp(rcx, rsp); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 222 | |
| 223 | // Unwind the stack down to - but not including - the unwinding |
| 224 | // limit and copy the contents of the activation frame to the input |
| 225 | // frame description. |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 226 | __ leap(rdx, Operand(rbx, FrameDescription::frame_content_offset())); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 227 | Label pop_loop_header; |
| 228 | __ jmp(&pop_loop_header); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 229 | Label pop_loop; |
| 230 | __ bind(&pop_loop); |
machenbach@chromium.org | 763da4c | 2014-03-19 10:48:37 +0000 | [diff] [blame] | 231 | __ Pop(Operand(rdx, 0)); |
machenbach@chromium.org | fa0c3c6 | 2014-03-24 08:11:09 +0000 | [diff] [blame] | 232 | __ addp(rdx, Immediate(sizeof(intptr_t))); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 233 | __ bind(&pop_loop_header); |
machenbach@chromium.org | 7a1bfbe | 2014-03-26 12:42:48 +0000 | [diff] [blame] | 234 | __ cmpp(rcx, rsp); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 235 | __ j(not_equal, &pop_loop); |
| 236 | |
| 237 | // Compute the output frame in the deoptimizer. |
machenbach@chromium.org | 763da4c | 2014-03-19 10:48:37 +0000 | [diff] [blame] | 238 | __ pushq(rax); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 239 | __ PrepareCallCFunction(2); |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 240 | __ movp(arg_reg_1, rax); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 241 | __ LoadAddress(arg_reg_2, ExternalReference::isolate_address(isolate())); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 242 | { |
| 243 | AllowExternalCallThatCantCauseGC scope(masm()); |
| 244 | __ CallCFunction( |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 245 | ExternalReference::compute_output_frames_function(isolate()), 2); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 246 | } |
machenbach@chromium.org | 763da4c | 2014-03-19 10:48:37 +0000 | [diff] [blame] | 247 | __ popq(rax); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 248 | |
| 249 | // Replace the current frame with the output frames. |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 250 | Label outer_push_loop, inner_push_loop, |
| 251 | outer_loop_header, inner_loop_header; |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 252 | // Outer loop state: rax = current FrameDescription**, rdx = one past the |
| 253 | // last FrameDescription**. |
| 254 | __ movl(rdx, Operand(rax, Deoptimizer::output_count_offset())); |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 255 | __ movp(rax, Operand(rax, Deoptimizer::output_offset())); |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 256 | __ leap(rdx, Operand(rax, rdx, times_pointer_size, 0)); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 257 | __ jmp(&outer_loop_header); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 258 | __ bind(&outer_push_loop); |
| 259 | // Inner loop state: rbx = current FrameDescription*, rcx = loop index. |
machenbach@chromium.org | 43c51e5 | 2014-01-20 07:57:28 +0000 | [diff] [blame] | 260 | __ movp(rbx, Operand(rax, 0)); |
| 261 | __ movp(rcx, Operand(rbx, FrameDescription::frame_size_offset())); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 262 | __ jmp(&inner_loop_header); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 263 | __ bind(&inner_push_loop); |
machenbach@chromium.org | fa0c3c6 | 2014-03-24 08:11:09 +0000 | [diff] [blame] | 264 | __ subp(rcx, Immediate(sizeof(intptr_t))); |
machenbach@chromium.org | 763da4c | 2014-03-19 10:48:37 +0000 | [diff] [blame] | 265 | __ Push(Operand(rbx, rcx, times_1, FrameDescription::frame_content_offset())); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 266 | __ bind(&inner_loop_header); |
machenbach@chromium.org | 7a1bfbe | 2014-03-26 12:42:48 +0000 | [diff] [blame] | 267 | __ testp(rcx, rcx); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 268 | __ j(not_zero, &inner_push_loop); |
machenbach@chromium.org | fa0c3c6 | 2014-03-24 08:11:09 +0000 | [diff] [blame] | 269 | __ addp(rax, Immediate(kPointerSize)); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 270 | __ bind(&outer_loop_header); |
machenbach@chromium.org | 7a1bfbe | 2014-03-26 12:42:48 +0000 | [diff] [blame] | 271 | __ cmpp(rax, rdx); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 272 | __ j(below, &outer_push_loop); |
| 273 | |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 274 | for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) { |
| 275 | XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i); |
| 276 | int src_offset = i * kDoubleSize + double_regs_offset; |
| 277 | __ movsd(xmm_reg, Operand(rbx, src_offset)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | // Push state, pc, and continuation from the last output frame. |
machenbach@chromium.org | 763da4c | 2014-03-19 10:48:37 +0000 | [diff] [blame] | 281 | __ Push(Operand(rbx, FrameDescription::state_offset())); |
machenbach@chromium.org | a86d416 | 2014-05-01 00:05:11 +0000 | [diff] [blame] | 282 | __ PushQuad(Operand(rbx, FrameDescription::pc_offset())); |
| 283 | __ PushQuad(Operand(rbx, FrameDescription::continuation_offset())); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 284 | |
| 285 | // Push the registers from the last output frame. |
| 286 | for (int i = 0; i < kNumberOfRegisters; i++) { |
| 287 | int offset = (i * kPointerSize) + FrameDescription::registers_offset(); |
machenbach@chromium.org | a86d416 | 2014-05-01 00:05:11 +0000 | [diff] [blame] | 288 | __ PushQuad(Operand(rbx, offset)); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | // Restore the registers from the stack. |
| 292 | for (int i = kNumberOfRegisters - 1; i >= 0 ; i--) { |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 293 | Register r = Register::from_code(i); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 294 | // Do not restore rsp, simply pop the value into the next register |
| 295 | // and overwrite this afterwards. |
| 296 | if (r.is(rsp)) { |
| 297 | ASSERT(i > 0); |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 298 | r = Register::from_code(i - 1); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 299 | } |
machenbach@chromium.org | 763da4c | 2014-03-19 10:48:37 +0000 | [diff] [blame] | 300 | __ popq(r); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | // Set up the roots register. |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 304 | __ InitializeRootRegister(); |
| 305 | __ InitializeSmiConstantRegister(); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 306 | |
| 307 | // Return to the continuation point. |
| 308 | __ ret(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | |
| 312 | void Deoptimizer::TableEntryGenerator::GeneratePrologue() { |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 313 | // Create a sequence of deoptimization entries. |
| 314 | Label done; |
| 315 | for (int i = 0; i < count(); i++) { |
| 316 | int start = masm()->pc_offset(); |
| 317 | USE(start); |
machenbach@chromium.org | 763da4c | 2014-03-19 10:48:37 +0000 | [diff] [blame] | 318 | __ pushq_imm32(i); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 319 | __ jmp(&done); |
| 320 | ASSERT(masm()->pc_offset() - start == table_entry_size_); |
| 321 | } |
| 322 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 323 | } |
| 324 | |
yangguo@chromium.org | c73d55b | 2013-07-24 08:18:28 +0000 | [diff] [blame] | 325 | |
| 326 | void FrameDescription::SetCallerPc(unsigned offset, intptr_t value) { |
machenbach@chromium.org | a86d416 | 2014-05-01 00:05:11 +0000 | [diff] [blame] | 327 | if (kPCOnStackSize == 2 * kPointerSize) { |
| 328 | // Zero out the high-32 bit of PC for x32 port. |
| 329 | SetFrameSlot(offset + kPointerSize, 0); |
| 330 | } |
yangguo@chromium.org | c73d55b | 2013-07-24 08:18:28 +0000 | [diff] [blame] | 331 | SetFrameSlot(offset, value); |
| 332 | } |
| 333 | |
| 334 | |
| 335 | void FrameDescription::SetCallerFp(unsigned offset, intptr_t value) { |
machenbach@chromium.org | a86d416 | 2014-05-01 00:05:11 +0000 | [diff] [blame] | 336 | if (kFPOnStackSize == 2 * kPointerSize) { |
| 337 | // Zero out the high-32 bit of FP for x32 port. |
| 338 | SetFrameSlot(offset + kPointerSize, 0); |
| 339 | } |
yangguo@chromium.org | c73d55b | 2013-07-24 08:18:28 +0000 | [diff] [blame] | 340 | SetFrameSlot(offset, value); |
| 341 | } |
| 342 | |
| 343 | |
dslomov@chromium.org | 6b6df38 | 2014-03-14 16:14:53 +0000 | [diff] [blame] | 344 | void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) { |
| 345 | // No out-of-line constant pool support. |
| 346 | UNREACHABLE(); |
| 347 | } |
| 348 | |
| 349 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 350 | #undef __ |
| 351 | |
| 352 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 353 | } } // namespace v8::internal |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 354 | |
| 355 | #endif // V8_TARGET_ARCH_X64 |