Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #if V8_TARGET_ARCH_X64 |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include "src/bootstrapper.h" |
| 8 | #include "src/code-stubs.h" |
| 9 | #include "src/codegen.h" |
| 10 | #include "src/ic/handler-compiler.h" |
| 11 | #include "src/ic/ic.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 12 | #include "src/ic/stub-cache.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 13 | #include "src/isolate.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 14 | #include "src/regexp/jsregexp.h" |
| 15 | #include "src/regexp/regexp-macro-assembler.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 16 | #include "src/runtime/runtime.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 17 | #include "src/x64/code-stubs-x64.h" |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 18 | |
| 19 | namespace v8 { |
| 20 | namespace internal { |
| 21 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 22 | |
| 23 | static void InitializeArrayConstructorDescriptor( |
| 24 | Isolate* isolate, CodeStubDescriptor* descriptor, |
| 25 | int constant_stack_parameter_count) { |
| 26 | Address deopt_handler = Runtime::FunctionForId( |
| 27 | Runtime::kArrayConstructor)->entry; |
| 28 | |
| 29 | if (constant_stack_parameter_count == 0) { |
| 30 | descriptor->Initialize(deopt_handler, constant_stack_parameter_count, |
| 31 | JS_FUNCTION_STUB_MODE); |
| 32 | } else { |
| 33 | descriptor->Initialize(rax, deopt_handler, constant_stack_parameter_count, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 34 | JS_FUNCTION_STUB_MODE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 35 | } |
| 36 | } |
| 37 | |
| 38 | |
| 39 | static void InitializeInternalArrayConstructorDescriptor( |
| 40 | Isolate* isolate, CodeStubDescriptor* descriptor, |
| 41 | int constant_stack_parameter_count) { |
| 42 | Address deopt_handler = Runtime::FunctionForId( |
| 43 | Runtime::kInternalArrayConstructor)->entry; |
| 44 | |
| 45 | if (constant_stack_parameter_count == 0) { |
| 46 | descriptor->Initialize(deopt_handler, constant_stack_parameter_count, |
| 47 | JS_FUNCTION_STUB_MODE); |
| 48 | } else { |
| 49 | descriptor->Initialize(rax, deopt_handler, constant_stack_parameter_count, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 50 | JS_FUNCTION_STUB_MODE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 51 | } |
| 52 | } |
| 53 | |
| 54 | |
| 55 | void ArrayNoArgumentConstructorStub::InitializeDescriptor( |
| 56 | CodeStubDescriptor* descriptor) { |
| 57 | InitializeArrayConstructorDescriptor(isolate(), descriptor, 0); |
| 58 | } |
| 59 | |
| 60 | |
| 61 | void ArraySingleArgumentConstructorStub::InitializeDescriptor( |
| 62 | CodeStubDescriptor* descriptor) { |
| 63 | InitializeArrayConstructorDescriptor(isolate(), descriptor, 1); |
| 64 | } |
| 65 | |
| 66 | |
| 67 | void ArrayNArgumentsConstructorStub::InitializeDescriptor( |
| 68 | CodeStubDescriptor* descriptor) { |
| 69 | InitializeArrayConstructorDescriptor(isolate(), descriptor, -1); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | void InternalArrayNoArgumentConstructorStub::InitializeDescriptor( |
| 74 | CodeStubDescriptor* descriptor) { |
| 75 | InitializeInternalArrayConstructorDescriptor(isolate(), descriptor, 0); |
| 76 | } |
| 77 | |
| 78 | |
| 79 | void InternalArraySingleArgumentConstructorStub::InitializeDescriptor( |
| 80 | CodeStubDescriptor* descriptor) { |
| 81 | InitializeInternalArrayConstructorDescriptor(isolate(), descriptor, 1); |
| 82 | } |
| 83 | |
| 84 | |
| 85 | void InternalArrayNArgumentsConstructorStub::InitializeDescriptor( |
| 86 | CodeStubDescriptor* descriptor) { |
| 87 | InitializeInternalArrayConstructorDescriptor(isolate(), descriptor, -1); |
| 88 | } |
| 89 | |
| 90 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 91 | #define __ ACCESS_MASM(masm) |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 92 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 93 | |
| 94 | void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm, |
| 95 | ExternalReference miss) { |
| 96 | // Update the static counter each time a new code stub is generated. |
| 97 | isolate()->counters()->code_stubs()->Increment(); |
| 98 | |
| 99 | CallInterfaceDescriptor descriptor = GetCallInterfaceDescriptor(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 100 | int param_count = descriptor.GetRegisterParameterCount(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 101 | { |
| 102 | // Call the runtime system in a fresh internal frame. |
| 103 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 104 | DCHECK(param_count == 0 || |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 105 | rax.is(descriptor.GetRegisterParameter(param_count - 1))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 106 | // Push arguments |
| 107 | for (int i = 0; i < param_count; ++i) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 108 | __ Push(descriptor.GetRegisterParameter(i)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 109 | } |
| 110 | __ CallExternalReference(miss, param_count); |
| 111 | } |
| 112 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 113 | __ Ret(); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 117 | void StoreBufferOverflowStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 118 | __ PushCallerSaved(save_doubles() ? kSaveFPRegs : kDontSaveFPRegs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 119 | const int argument_count = 1; |
| 120 | __ PrepareCallCFunction(argument_count); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 121 | __ LoadAddress(arg_reg_1, |
| 122 | ExternalReference::isolate_address(isolate())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 123 | |
| 124 | AllowExternalCallThatCantCauseGC scope(masm); |
| 125 | __ CallCFunction( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 126 | ExternalReference::store_buffer_overflow_function(isolate()), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 127 | argument_count); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 128 | __ PopCallerSaved(save_doubles() ? kSaveFPRegs : kDontSaveFPRegs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 129 | __ ret(0); |
| 130 | } |
| 131 | |
| 132 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 133 | class FloatingPointHelper : public AllStatic { |
| 134 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 135 | enum ConvertUndefined { |
| 136 | CONVERT_UNDEFINED_TO_ZERO, |
| 137 | BAILOUT_ON_UNDEFINED |
| 138 | }; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 139 | // Load the operands from rdx and rax into xmm0 and xmm1, as doubles. |
| 140 | // If the operands are not both numbers, jump to not_numbers. |
| 141 | // Leaves rdx and rax unchanged. SmiOperands assumes both are smis. |
| 142 | // NumberOperands assumes both are smis or heap numbers. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 143 | static void LoadSSE2UnknownOperands(MacroAssembler* masm, |
| 144 | Label* not_numbers); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 145 | }; |
| 146 | |
| 147 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 148 | void DoubleToIStub::Generate(MacroAssembler* masm) { |
| 149 | Register input_reg = this->source(); |
| 150 | Register final_result_reg = this->destination(); |
| 151 | DCHECK(is_truncating()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 152 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 153 | Label check_negative, process_64_bits, done; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 154 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 155 | int double_offset = offset(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 156 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 157 | // Account for return address and saved regs if input is rsp. |
| 158 | if (input_reg.is(rsp)) double_offset += 3 * kRegisterSize; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 159 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 160 | MemOperand mantissa_operand(MemOperand(input_reg, double_offset)); |
| 161 | MemOperand exponent_operand(MemOperand(input_reg, |
| 162 | double_offset + kDoubleSize / 2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 163 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 164 | Register scratch1; |
| 165 | Register scratch_candidates[3] = { rbx, rdx, rdi }; |
| 166 | for (int i = 0; i < 3; i++) { |
| 167 | scratch1 = scratch_candidates[i]; |
| 168 | if (!final_result_reg.is(scratch1) && !input_reg.is(scratch1)) break; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 169 | } |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 170 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 171 | // Since we must use rcx for shifts below, use some other register (rax) |
| 172 | // to calculate the result if ecx is the requested return register. |
| 173 | Register result_reg = final_result_reg.is(rcx) ? rax : final_result_reg; |
| 174 | // Save ecx if it isn't the return register and therefore volatile, or if it |
| 175 | // is the return register, then save the temp register we use in its stead |
| 176 | // for the result. |
| 177 | Register save_reg = final_result_reg.is(rcx) ? rax : rcx; |
| 178 | __ pushq(scratch1); |
| 179 | __ pushq(save_reg); |
| 180 | |
| 181 | bool stash_exponent_copy = !input_reg.is(rsp); |
| 182 | __ movl(scratch1, mantissa_operand); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 183 | __ Movsd(xmm0, mantissa_operand); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 184 | __ movl(rcx, exponent_operand); |
| 185 | if (stash_exponent_copy) __ pushq(rcx); |
| 186 | |
| 187 | __ andl(rcx, Immediate(HeapNumber::kExponentMask)); |
| 188 | __ shrl(rcx, Immediate(HeapNumber::kExponentShift)); |
| 189 | __ leal(result_reg, MemOperand(rcx, -HeapNumber::kExponentBias)); |
| 190 | __ cmpl(result_reg, Immediate(HeapNumber::kMantissaBits)); |
| 191 | __ j(below, &process_64_bits); |
| 192 | |
| 193 | // Result is entirely in lower 32-bits of mantissa |
| 194 | int delta = HeapNumber::kExponentBias + Double::kPhysicalSignificandSize; |
| 195 | __ subl(rcx, Immediate(delta)); |
| 196 | __ xorl(result_reg, result_reg); |
| 197 | __ cmpl(rcx, Immediate(31)); |
| 198 | __ j(above, &done); |
| 199 | __ shll_cl(scratch1); |
| 200 | __ jmp(&check_negative); |
| 201 | |
| 202 | __ bind(&process_64_bits); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 203 | __ Cvttsd2siq(result_reg, xmm0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 204 | __ jmp(&done, Label::kNear); |
| 205 | |
| 206 | // If the double was negative, negate the integer result. |
| 207 | __ bind(&check_negative); |
| 208 | __ movl(result_reg, scratch1); |
| 209 | __ negl(result_reg); |
| 210 | if (stash_exponent_copy) { |
| 211 | __ cmpl(MemOperand(rsp, 0), Immediate(0)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 212 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 213 | __ cmpl(exponent_operand, Immediate(0)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 214 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 215 | __ cmovl(greater, result_reg, scratch1); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 216 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 217 | // Restore registers |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 218 | __ bind(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 219 | if (stash_exponent_copy) { |
| 220 | __ addp(rsp, Immediate(kDoubleSize)); |
| 221 | } |
| 222 | if (!final_result_reg.is(result_reg)) { |
| 223 | DCHECK(final_result_reg.is(rcx)); |
| 224 | __ movl(final_result_reg, result_reg); |
| 225 | } |
| 226 | __ popq(save_reg); |
| 227 | __ popq(scratch1); |
| 228 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | |
| 232 | void FloatingPointHelper::LoadSSE2UnknownOperands(MacroAssembler* masm, |
| 233 | Label* not_numbers) { |
| 234 | Label load_smi_rdx, load_nonsmi_rax, load_smi_rax, load_float_rax, done; |
| 235 | // Load operand in rdx into xmm0, or branch to not_numbers. |
| 236 | __ LoadRoot(rcx, Heap::kHeapNumberMapRootIndex); |
| 237 | __ JumpIfSmi(rdx, &load_smi_rdx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 238 | __ cmpp(FieldOperand(rdx, HeapObject::kMapOffset), rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 239 | __ j(not_equal, not_numbers); // Argument in rdx is not a number. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 240 | __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 241 | // Load operand in rax into xmm1, or branch to not_numbers. |
| 242 | __ JumpIfSmi(rax, &load_smi_rax); |
| 243 | |
| 244 | __ bind(&load_nonsmi_rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 245 | __ cmpp(FieldOperand(rax, HeapObject::kMapOffset), rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 246 | __ j(not_equal, not_numbers); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 247 | __ Movsd(xmm1, FieldOperand(rax, HeapNumber::kValueOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 248 | __ jmp(&done); |
| 249 | |
| 250 | __ bind(&load_smi_rdx); |
| 251 | __ SmiToInteger32(kScratchRegister, rdx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 252 | __ Cvtlsi2sd(xmm0, kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 253 | __ JumpIfNotSmi(rax, &load_nonsmi_rax); |
| 254 | |
| 255 | __ bind(&load_smi_rax); |
| 256 | __ SmiToInteger32(kScratchRegister, rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 257 | __ Cvtlsi2sd(xmm1, kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 258 | __ bind(&done); |
| 259 | } |
| 260 | |
| 261 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 262 | void MathPowStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 263 | const Register exponent = MathPowTaggedDescriptor::exponent(); |
| 264 | DCHECK(exponent.is(rdx)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 265 | const Register base = rax; |
| 266 | const Register scratch = rcx; |
| 267 | const XMMRegister double_result = xmm3; |
| 268 | const XMMRegister double_base = xmm2; |
| 269 | const XMMRegister double_exponent = xmm1; |
| 270 | const XMMRegister double_scratch = xmm4; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 271 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 272 | Label call_runtime, done, exponent_not_smi, int_exponent; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 273 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 274 | // Save 1 in double_result - we need this several times later on. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 275 | __ movp(scratch, Immediate(1)); |
| 276 | __ Cvtlsi2sd(double_result, scratch); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 277 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 278 | if (exponent_type() == ON_STACK) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 279 | Label base_is_smi, unpack_exponent; |
| 280 | // The exponent and base are supplied as arguments on the stack. |
| 281 | // This can only happen if the stub is called from non-optimized code. |
| 282 | // Load input parameters from stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 283 | StackArgumentsAccessor args(rsp, 2, ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 284 | __ movp(base, args.GetArgumentOperand(0)); |
| 285 | __ movp(exponent, args.GetArgumentOperand(1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 286 | __ JumpIfSmi(base, &base_is_smi, Label::kNear); |
| 287 | __ CompareRoot(FieldOperand(base, HeapObject::kMapOffset), |
| 288 | Heap::kHeapNumberMapRootIndex); |
| 289 | __ j(not_equal, &call_runtime); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 290 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 291 | __ Movsd(double_base, FieldOperand(base, HeapNumber::kValueOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 292 | __ jmp(&unpack_exponent, Label::kNear); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 293 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 294 | __ bind(&base_is_smi); |
| 295 | __ SmiToInteger32(base, base); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 296 | __ Cvtlsi2sd(double_base, base); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 297 | __ bind(&unpack_exponent); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 298 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 299 | __ JumpIfNotSmi(exponent, &exponent_not_smi, Label::kNear); |
| 300 | __ SmiToInteger32(exponent, exponent); |
| 301 | __ jmp(&int_exponent); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 302 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 303 | __ bind(&exponent_not_smi); |
| 304 | __ CompareRoot(FieldOperand(exponent, HeapObject::kMapOffset), |
| 305 | Heap::kHeapNumberMapRootIndex); |
| 306 | __ j(not_equal, &call_runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 307 | __ Movsd(double_exponent, FieldOperand(exponent, HeapNumber::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 308 | } else if (exponent_type() == TAGGED) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 309 | __ JumpIfNotSmi(exponent, &exponent_not_smi, Label::kNear); |
| 310 | __ SmiToInteger32(exponent, exponent); |
| 311 | __ jmp(&int_exponent); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 312 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 313 | __ bind(&exponent_not_smi); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 314 | __ Movsd(double_exponent, FieldOperand(exponent, HeapNumber::kValueOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 315 | } |
| 316 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 317 | if (exponent_type() != INTEGER) { |
| 318 | Label fast_power, try_arithmetic_simplification; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 319 | // Detect integer exponents stored as double. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 320 | __ DoubleToI(exponent, double_exponent, double_scratch, |
| 321 | TREAT_MINUS_ZERO_AS_ZERO, &try_arithmetic_simplification, |
| 322 | &try_arithmetic_simplification, |
| 323 | &try_arithmetic_simplification); |
| 324 | __ jmp(&int_exponent); |
| 325 | |
| 326 | __ bind(&try_arithmetic_simplification); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 327 | __ Cvttsd2si(exponent, double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 328 | // Skip to runtime if possibly NaN (indicated by the indefinite integer). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 329 | __ cmpl(exponent, Immediate(0x1)); |
| 330 | __ j(overflow, &call_runtime); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 331 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 332 | if (exponent_type() == ON_STACK) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 333 | // Detect square root case. Crankshaft detects constant +/-0.5 at |
| 334 | // compile time and uses DoMathPowHalf instead. We then skip this check |
| 335 | // for non-constant cases of +/-0.5 as these hardly occur. |
| 336 | Label continue_sqrt, continue_rsqrt, not_plus_half; |
| 337 | // Test for 0.5. |
| 338 | // Load double_scratch with 0.5. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 339 | __ movq(scratch, V8_UINT64_C(0x3FE0000000000000)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 340 | __ Movq(double_scratch, scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 341 | // Already ruled out NaNs for exponent. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 342 | __ Ucomisd(double_scratch, double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 343 | __ j(not_equal, ¬_plus_half, Label::kNear); |
| 344 | |
| 345 | // Calculates square root of base. Check for the special case of |
| 346 | // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13). |
| 347 | // According to IEEE-754, double-precision -Infinity has the highest |
| 348 | // 12 bits set and the lowest 52 bits cleared. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 349 | __ movq(scratch, V8_UINT64_C(0xFFF0000000000000)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 350 | __ Movq(double_scratch, scratch); |
| 351 | __ Ucomisd(double_scratch, double_base); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 352 | // Comparing -Infinity with NaN results in "unordered", which sets the |
| 353 | // zero flag as if both were equal. However, it also sets the carry flag. |
| 354 | __ j(not_equal, &continue_sqrt, Label::kNear); |
| 355 | __ j(carry, &continue_sqrt, Label::kNear); |
| 356 | |
| 357 | // Set result to Infinity in the special case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 358 | __ Xorpd(double_result, double_result); |
| 359 | __ Subsd(double_result, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 360 | __ jmp(&done); |
| 361 | |
| 362 | __ bind(&continue_sqrt); |
| 363 | // sqrtsd returns -0 when input is -0. ECMA spec requires +0. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 364 | __ Xorpd(double_scratch, double_scratch); |
| 365 | __ Addsd(double_scratch, double_base); // Convert -0 to 0. |
| 366 | __ Sqrtsd(double_result, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 367 | __ jmp(&done); |
| 368 | |
| 369 | // Test for -0.5. |
| 370 | __ bind(¬_plus_half); |
| 371 | // Load double_scratch with -0.5 by substracting 1. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 372 | __ Subsd(double_scratch, double_result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 373 | // Already ruled out NaNs for exponent. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 374 | __ Ucomisd(double_scratch, double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 375 | __ j(not_equal, &fast_power, Label::kNear); |
| 376 | |
| 377 | // Calculates reciprocal of square root of base. Check for the special |
| 378 | // case of Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13). |
| 379 | // According to IEEE-754, double-precision -Infinity has the highest |
| 380 | // 12 bits set and the lowest 52 bits cleared. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 381 | __ movq(scratch, V8_UINT64_C(0xFFF0000000000000)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 382 | __ Movq(double_scratch, scratch); |
| 383 | __ Ucomisd(double_scratch, double_base); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 384 | // Comparing -Infinity with NaN results in "unordered", which sets the |
| 385 | // zero flag as if both were equal. However, it also sets the carry flag. |
| 386 | __ j(not_equal, &continue_rsqrt, Label::kNear); |
| 387 | __ j(carry, &continue_rsqrt, Label::kNear); |
| 388 | |
| 389 | // Set result to 0 in the special case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 390 | __ Xorpd(double_result, double_result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 391 | __ jmp(&done); |
| 392 | |
| 393 | __ bind(&continue_rsqrt); |
| 394 | // sqrtsd returns -0 when input is -0. ECMA spec requires +0. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 395 | __ Xorpd(double_exponent, double_exponent); |
| 396 | __ Addsd(double_exponent, double_base); // Convert -0 to +0. |
| 397 | __ Sqrtsd(double_exponent, double_exponent); |
| 398 | __ Divsd(double_result, double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 399 | __ jmp(&done); |
| 400 | } |
| 401 | |
| 402 | // Using FPU instructions to calculate power. |
| 403 | Label fast_power_failed; |
| 404 | __ bind(&fast_power); |
| 405 | __ fnclex(); // Clear flags to catch exceptions later. |
| 406 | // Transfer (B)ase and (E)xponent onto the FPU register stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 407 | __ subp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 408 | __ Movsd(Operand(rsp, 0), double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 409 | __ fld_d(Operand(rsp, 0)); // E |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 410 | __ Movsd(Operand(rsp, 0), double_base); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 411 | __ fld_d(Operand(rsp, 0)); // B, E |
| 412 | |
| 413 | // Exponent is in st(1) and base is in st(0) |
| 414 | // B ^ E = (2^(E * log2(B)) - 1) + 1 = (2^X - 1) + 1 for X = E * log2(B) |
| 415 | // FYL2X calculates st(1) * log2(st(0)) |
| 416 | __ fyl2x(); // X |
| 417 | __ fld(0); // X, X |
| 418 | __ frndint(); // rnd(X), X |
| 419 | __ fsub(1); // rnd(X), X-rnd(X) |
| 420 | __ fxch(1); // X - rnd(X), rnd(X) |
| 421 | // F2XM1 calculates 2^st(0) - 1 for -1 < st(0) < 1 |
| 422 | __ f2xm1(); // 2^(X-rnd(X)) - 1, rnd(X) |
| 423 | __ fld1(); // 1, 2^(X-rnd(X)) - 1, rnd(X) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 424 | __ faddp(1); // 2^(X-rnd(X)), rnd(X) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 425 | // FSCALE calculates st(0) * 2^st(1) |
| 426 | __ fscale(); // 2^X, rnd(X) |
| 427 | __ fstp(1); |
| 428 | // Bail out to runtime in case of exceptions in the status word. |
| 429 | __ fnstsw_ax(); |
| 430 | __ testb(rax, Immediate(0x5F)); // Check for all but precision exception. |
| 431 | __ j(not_zero, &fast_power_failed, Label::kNear); |
| 432 | __ fstp_d(Operand(rsp, 0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 433 | __ Movsd(double_result, Operand(rsp, 0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 434 | __ addp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 435 | __ jmp(&done); |
| 436 | |
| 437 | __ bind(&fast_power_failed); |
| 438 | __ fninit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 439 | __ addp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 440 | __ jmp(&call_runtime); |
| 441 | } |
| 442 | |
| 443 | // Calculate power with integer exponent. |
| 444 | __ bind(&int_exponent); |
| 445 | const XMMRegister double_scratch2 = double_exponent; |
| 446 | // Back up exponent as we need to check if exponent is negative later. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 447 | __ movp(scratch, exponent); // Back up exponent. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 448 | __ Movsd(double_scratch, double_base); // Back up base. |
| 449 | __ Movsd(double_scratch2, double_result); // Load double_exponent with 1. |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 450 | |
| 451 | // Get absolute value of exponent. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 452 | Label no_neg, while_true, while_false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 453 | __ testl(scratch, scratch); |
| 454 | __ j(positive, &no_neg, Label::kNear); |
| 455 | __ negl(scratch); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 456 | __ bind(&no_neg); |
| 457 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 458 | __ j(zero, &while_false, Label::kNear); |
| 459 | __ shrl(scratch, Immediate(1)); |
| 460 | // Above condition means CF==0 && ZF==0. This means that the |
| 461 | // bit that has been shifted out is 0 and the result is not 0. |
| 462 | __ j(above, &while_true, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 463 | __ Movsd(double_result, double_scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 464 | __ j(zero, &while_false, Label::kNear); |
| 465 | |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 466 | __ bind(&while_true); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 467 | __ shrl(scratch, Immediate(1)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 468 | __ Mulsd(double_scratch, double_scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 469 | __ j(above, &while_true, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 470 | __ Mulsd(double_result, double_scratch); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 471 | __ j(not_zero, &while_true); |
| 472 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 473 | __ bind(&while_false); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 474 | // If the exponent is negative, return 1/result. |
| 475 | __ testl(exponent, exponent); |
| 476 | __ j(greater, &done); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 477 | __ Divsd(double_scratch2, double_result); |
| 478 | __ Movsd(double_result, double_scratch2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 479 | // Test whether result is zero. Bail out to check for subnormal result. |
| 480 | // Due to subnormals, x^-y == (1/x)^y does not hold in all cases. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 481 | __ Xorpd(double_scratch2, double_scratch2); |
| 482 | __ Ucomisd(double_scratch2, double_result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 483 | // double_exponent aliased as double_scratch2 has already been overwritten |
| 484 | // and may not have contained the exponent value in the first place when the |
| 485 | // input was a smi. We reset it with exponent value before bailing out. |
| 486 | __ j(not_equal, &done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 487 | __ Cvtlsi2sd(double_exponent, exponent); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 488 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 489 | // Returning or bailing out. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 490 | Counters* counters = isolate()->counters(); |
| 491 | if (exponent_type() == ON_STACK) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 492 | // The arguments are still on the stack. |
| 493 | __ bind(&call_runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 494 | __ TailCallRuntime(Runtime::kMathPowRT); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 495 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 496 | // The stub is called from non-optimized code, which expects the result |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 497 | // as heap number in rax. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 498 | __ bind(&done); |
| 499 | __ AllocateHeapNumber(rax, rcx, &call_runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 500 | __ Movsd(FieldOperand(rax, HeapNumber::kValueOffset), double_result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 501 | __ IncrementCounter(counters->math_pow(), 1); |
| 502 | __ ret(2 * kPointerSize); |
| 503 | } else { |
| 504 | __ bind(&call_runtime); |
| 505 | // Move base to the correct argument register. Exponent is already in xmm1. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 506 | __ Movsd(xmm0, double_base); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 507 | DCHECK(double_exponent.is(xmm1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 508 | { |
| 509 | AllowExternalCallThatCantCauseGC scope(masm); |
| 510 | __ PrepareCallCFunction(2); |
| 511 | __ CallCFunction( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 512 | ExternalReference::power_double_double_function(isolate()), 2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 513 | } |
| 514 | // Return value is in xmm0. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 515 | __ Movsd(double_result, xmm0); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 516 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 517 | __ bind(&done); |
| 518 | __ IncrementCounter(counters->math_pow(), 1); |
| 519 | __ ret(0); |
| 520 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 524 | void FunctionPrototypeStub::Generate(MacroAssembler* masm) { |
| 525 | Label miss; |
| 526 | Register receiver = LoadDescriptor::ReceiverRegister(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 527 | // Ensure that the vector and slot registers won't be clobbered before |
| 528 | // calling the miss handler. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 529 | DCHECK(!AreAliased(r8, r9, LoadWithVectorDescriptor::VectorRegister(), |
| 530 | LoadDescriptor::SlotRegister())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 531 | |
| 532 | NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(masm, receiver, r8, |
| 533 | r9, &miss); |
| 534 | __ bind(&miss); |
| 535 | PropertyAccessCompiler::TailCallBuiltin( |
| 536 | masm, PropertyAccessCompiler::MissBuiltin(Code::LOAD_IC)); |
| 537 | } |
| 538 | |
| 539 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 540 | void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) { |
| 541 | // The key is in rdx and the parameter count is in rax. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 542 | DCHECK(rdx.is(ArgumentsAccessReadDescriptor::index())); |
| 543 | DCHECK(rax.is(ArgumentsAccessReadDescriptor::parameter_count())); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 544 | |
| 545 | // Check that the key is a smi. |
| 546 | Label slow; |
| 547 | __ JumpIfNotSmi(rdx, &slow); |
| 548 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 549 | // Check if the calling frame is an arguments adaptor frame. We look at the |
| 550 | // context offset, and if the frame is not a regular one, then we find a |
| 551 | // Smi instead of the context. We can't use SmiCompare here, because that |
| 552 | // only works for comparing two smis. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 553 | Label adaptor; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 554 | __ movp(rbx, Operand(rbp, StandardFrameConstants::kCallerFPOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 555 | __ Cmp(Operand(rbx, StandardFrameConstants::kContextOffset), |
| 556 | Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 557 | __ j(equal, &adaptor); |
| 558 | |
| 559 | // Check index against formal parameters count limit passed in |
| 560 | // through register rax. Use unsigned comparison to get negative |
| 561 | // check for free. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 562 | __ cmpp(rdx, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 563 | __ j(above_equal, &slow); |
| 564 | |
| 565 | // Read the argument from the stack and return it. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 566 | __ SmiSub(rax, rax, rdx); |
| 567 | __ SmiToInteger32(rax, rax); |
| 568 | StackArgumentsAccessor args(rbp, rax, ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 569 | __ movp(rax, args.GetArgumentOperand(0)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 570 | __ Ret(); |
| 571 | |
| 572 | // Arguments adaptor case: Check index against actual arguments |
| 573 | // limit found in the arguments adaptor frame. Use unsigned |
| 574 | // comparison to get negative check for free. |
| 575 | __ bind(&adaptor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 576 | __ movp(rcx, Operand(rbx, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 577 | __ cmpp(rdx, rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 578 | __ j(above_equal, &slow); |
| 579 | |
| 580 | // Read the argument from the stack and return it. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 581 | __ SmiSub(rcx, rcx, rdx); |
| 582 | __ SmiToInteger32(rcx, rcx); |
| 583 | StackArgumentsAccessor adaptor_args(rbx, rcx, |
| 584 | ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 585 | __ movp(rax, adaptor_args.GetArgumentOperand(0)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 586 | __ Ret(); |
| 587 | |
| 588 | // Slow-case: Handle non-smi or out-of-bounds access to arguments |
| 589 | // by calling the runtime system. |
| 590 | __ bind(&slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 591 | __ PopReturnAddressTo(rbx); |
| 592 | __ Push(rdx); |
| 593 | __ PushReturnAddressFrom(rbx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 594 | __ TailCallRuntime(Runtime::kArguments); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 598 | void ArgumentsAccessStub::GenerateNewSloppyFast(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 599 | // rcx : number of parameters (tagged) |
| 600 | // rdx : parameters pointer |
| 601 | // rdi : function |
| 602 | // rsp[0] : return address |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 603 | // Registers used over the whole function: |
| 604 | // rbx: the mapped parameter count (untagged) |
| 605 | // rax: the allocated object (tagged). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 606 | Factory* factory = isolate()->factory(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 607 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 608 | DCHECK(rdi.is(ArgumentsAccessNewDescriptor::function())); |
| 609 | DCHECK(rcx.is(ArgumentsAccessNewDescriptor::parameter_count())); |
| 610 | DCHECK(rdx.is(ArgumentsAccessNewDescriptor::parameter_pointer())); |
| 611 | |
| 612 | __ SmiToInteger64(rbx, rcx); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 613 | // rbx = parameter count (untagged) |
| 614 | |
| 615 | // Check if the calling frame is an arguments adaptor frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 616 | Label adaptor_frame, try_allocate, runtime; |
| 617 | __ movp(rax, Operand(rbp, StandardFrameConstants::kCallerFPOffset)); |
| 618 | __ movp(r8, Operand(rax, StandardFrameConstants::kContextOffset)); |
| 619 | __ Cmp(r8, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 620 | __ j(equal, &adaptor_frame); |
| 621 | |
| 622 | // No adaptor, parameter count = argument count. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 623 | __ movp(r11, rbx); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 624 | __ jmp(&try_allocate, Label::kNear); |
| 625 | |
| 626 | // We have an adaptor frame. Patch the parameters pointer. |
| 627 | __ bind(&adaptor_frame); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 628 | __ SmiToInteger64( |
| 629 | r11, Operand(rax, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 630 | __ leap(rdx, Operand(rax, r11, times_pointer_size, |
| 631 | StandardFrameConstants::kCallerSPOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 632 | |
| 633 | // rbx = parameter count (untagged) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 634 | // r11 = argument count (untagged) |
| 635 | // Compute the mapped parameter count = min(rbx, r11) in rbx. |
| 636 | __ cmpp(rbx, r11); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 637 | __ j(less_equal, &try_allocate, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 638 | __ movp(rbx, r11); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 639 | |
| 640 | __ bind(&try_allocate); |
| 641 | |
| 642 | // Compute the sizes of backing store, parameter map, and arguments object. |
| 643 | // 1. Parameter map, has 2 extra words containing context and backing store. |
| 644 | const int kParameterMapHeaderSize = |
| 645 | FixedArray::kHeaderSize + 2 * kPointerSize; |
| 646 | Label no_parameter_map; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 647 | __ xorp(r8, r8); |
| 648 | __ testp(rbx, rbx); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 649 | __ j(zero, &no_parameter_map, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 650 | __ leap(r8, Operand(rbx, times_pointer_size, kParameterMapHeaderSize)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 651 | __ bind(&no_parameter_map); |
| 652 | |
| 653 | // 2. Backing store. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 654 | __ leap(r8, Operand(r8, r11, times_pointer_size, FixedArray::kHeaderSize)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 655 | |
| 656 | // 3. Arguments object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 657 | __ addp(r8, Immediate(Heap::kSloppyArgumentsObjectSize)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 658 | |
| 659 | // Do the allocation of all three objects in one go. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 660 | __ Allocate(r8, rax, r9, no_reg, &runtime, TAG_OBJECT); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 661 | |
| 662 | // rax = address of new object(s) (tagged) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 663 | // r11 = argument count (untagged) |
| 664 | // Get the arguments map from the current native context into r9. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 665 | Label has_mapped_parameters, instantiate; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 666 | __ movp(r9, NativeContextOperand()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 667 | __ testp(rbx, rbx); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 668 | __ j(not_zero, &has_mapped_parameters, Label::kNear); |
| 669 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 670 | const int kIndex = Context::SLOPPY_ARGUMENTS_MAP_INDEX; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 671 | __ movp(r9, Operand(r9, Context::SlotOffset(kIndex))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 672 | __ jmp(&instantiate, Label::kNear); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 673 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 674 | const int kAliasedIndex = Context::FAST_ALIASED_ARGUMENTS_MAP_INDEX; |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 675 | __ bind(&has_mapped_parameters); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 676 | __ movp(r9, Operand(r9, Context::SlotOffset(kAliasedIndex))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 677 | __ bind(&instantiate); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 678 | |
| 679 | // rax = address of new object (tagged) |
| 680 | // rbx = mapped parameter count (untagged) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 681 | // r11 = argument count (untagged) |
| 682 | // r9 = address of arguments map (tagged) |
| 683 | __ movp(FieldOperand(rax, JSObject::kMapOffset), r9); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 684 | __ LoadRoot(kScratchRegister, Heap::kEmptyFixedArrayRootIndex); |
| 685 | __ movp(FieldOperand(rax, JSObject::kPropertiesOffset), kScratchRegister); |
| 686 | __ movp(FieldOperand(rax, JSObject::kElementsOffset), kScratchRegister); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 687 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 688 | // Set up the callee in-object property. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 689 | STATIC_ASSERT(Heap::kArgumentsCalleeIndex == 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 690 | __ AssertNotSmi(rdi); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 691 | __ movp(FieldOperand(rax, JSObject::kHeaderSize + |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 692 | Heap::kArgumentsCalleeIndex * kPointerSize), |
| 693 | rdi); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 694 | |
| 695 | // Use the length (smi tagged) and set that as an in-object property too. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 696 | // Note: r11 is tagged from here on. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 697 | STATIC_ASSERT(Heap::kArgumentsLengthIndex == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 698 | __ Integer32ToSmi(r11, r11); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 699 | __ movp(FieldOperand(rax, JSObject::kHeaderSize + |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 700 | Heap::kArgumentsLengthIndex * kPointerSize), |
| 701 | r11); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 702 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 703 | // Set up the elements pointer in the allocated arguments object. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 704 | // If we allocated a parameter map, rdi will point there, otherwise to the |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 705 | // backing store. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 706 | __ leap(rdi, Operand(rax, Heap::kSloppyArgumentsObjectSize)); |
| 707 | __ movp(FieldOperand(rax, JSObject::kElementsOffset), rdi); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 708 | |
| 709 | // rax = address of new object (tagged) |
| 710 | // rbx = mapped parameter count (untagged) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 711 | // r11 = argument count (tagged) |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 712 | // rdi = address of parameter map or backing store (tagged) |
| 713 | |
| 714 | // Initialize parameter map. If there are no mapped arguments, we're done. |
| 715 | Label skip_parameter_map; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 716 | __ testp(rbx, rbx); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 717 | __ j(zero, &skip_parameter_map); |
| 718 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 719 | __ LoadRoot(kScratchRegister, Heap::kSloppyArgumentsElementsMapRootIndex); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 720 | // rbx contains the untagged argument count. Add 2 and tag to write. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 721 | __ movp(FieldOperand(rdi, FixedArray::kMapOffset), kScratchRegister); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 722 | __ Integer64PlusConstantToSmi(r9, rbx, 2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 723 | __ movp(FieldOperand(rdi, FixedArray::kLengthOffset), r9); |
| 724 | __ movp(FieldOperand(rdi, FixedArray::kHeaderSize + 0 * kPointerSize), rsi); |
| 725 | __ leap(r9, Operand(rdi, rbx, times_pointer_size, kParameterMapHeaderSize)); |
| 726 | __ movp(FieldOperand(rdi, FixedArray::kHeaderSize + 1 * kPointerSize), r9); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 727 | |
| 728 | // Copy the parameter slots and the holes in the arguments. |
| 729 | // We need to fill in mapped_parameter_count slots. They index the context, |
| 730 | // where parameters are stored in reverse order, at |
| 731 | // MIN_CONTEXT_SLOTS .. MIN_CONTEXT_SLOTS+parameter_count-1 |
| 732 | // The mapped parameter thus need to get indices |
| 733 | // MIN_CONTEXT_SLOTS+parameter_count-1 .. |
| 734 | // MIN_CONTEXT_SLOTS+parameter_count-mapped_parameter_count |
| 735 | // We loop from right to left. |
| 736 | Label parameters_loop, parameters_test; |
| 737 | |
| 738 | // Load tagged parameter count into r9. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 739 | __ Integer32ToSmi(r9, rbx); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 740 | __ Move(r8, Smi::FromInt(Context::MIN_CONTEXT_SLOTS)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 741 | __ addp(r8, rcx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 742 | __ subp(r8, r9); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 743 | __ movp(rcx, rdi); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 744 | __ leap(rdi, Operand(rdi, rbx, times_pointer_size, kParameterMapHeaderSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 745 | __ SmiToInteger64(r9, r9); |
| 746 | // r9 = loop variable (untagged) |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 747 | // r8 = mapping index (tagged) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 748 | // rcx = address of parameter map (tagged) |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 749 | // rdi = address of backing store (tagged) |
| 750 | __ jmp(¶meters_test, Label::kNear); |
| 751 | |
| 752 | __ bind(¶meters_loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 753 | __ subp(r9, Immediate(1)); |
| 754 | __ LoadRoot(kScratchRegister, Heap::kTheHoleValueRootIndex); |
| 755 | __ movp(FieldOperand(rcx, r9, times_pointer_size, kParameterMapHeaderSize), |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 756 | r8); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 757 | __ movp(FieldOperand(rdi, r9, times_pointer_size, FixedArray::kHeaderSize), |
| 758 | kScratchRegister); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 759 | __ SmiAddConstant(r8, r8, Smi::FromInt(1)); |
| 760 | __ bind(¶meters_test); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 761 | __ testp(r9, r9); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 762 | __ j(not_zero, ¶meters_loop, Label::kNear); |
| 763 | |
| 764 | __ bind(&skip_parameter_map); |
| 765 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 766 | // r11 = argument count (tagged) |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 767 | // rdi = address of backing store (tagged) |
| 768 | // Copy arguments header and remaining slots (if there are any). |
| 769 | __ Move(FieldOperand(rdi, FixedArray::kMapOffset), |
| 770 | factory->fixed_array_map()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 771 | __ movp(FieldOperand(rdi, FixedArray::kLengthOffset), r11); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 772 | |
| 773 | Label arguments_loop, arguments_test; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 774 | __ movp(r8, rbx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 775 | // Untag r11 for the loop below. |
| 776 | __ SmiToInteger64(r11, r11); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 777 | __ leap(kScratchRegister, Operand(r8, times_pointer_size, 0)); |
| 778 | __ subp(rdx, kScratchRegister); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 779 | __ jmp(&arguments_test, Label::kNear); |
| 780 | |
| 781 | __ bind(&arguments_loop); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 782 | __ subp(rdx, Immediate(kPointerSize)); |
| 783 | __ movp(r9, Operand(rdx, 0)); |
| 784 | __ movp(FieldOperand(rdi, r8, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 785 | times_pointer_size, |
| 786 | FixedArray::kHeaderSize), |
| 787 | r9); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 788 | __ addp(r8, Immediate(1)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 789 | |
| 790 | __ bind(&arguments_test); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 791 | __ cmpp(r8, r11); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 792 | __ j(less, &arguments_loop, Label::kNear); |
| 793 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 794 | // Return. |
| 795 | __ ret(0); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 796 | |
| 797 | // Do the runtime call to allocate the arguments object. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 798 | // r11 = argument count (untagged) |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 799 | __ bind(&runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 800 | __ Integer32ToSmi(r11, r11); |
| 801 | __ PopReturnAddressTo(rax); |
| 802 | __ Push(rdi); // Push function. |
| 803 | __ Push(rdx); // Push parameters pointer. |
| 804 | __ Push(r11); // Push parameter count. |
| 805 | __ PushReturnAddressFrom(rax); |
| 806 | __ TailCallRuntime(Runtime::kNewSloppyArguments); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 807 | } |
| 808 | |
| 809 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 810 | void ArgumentsAccessStub::GenerateNewSloppySlow(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 811 | // rcx : number of parameters (tagged) |
| 812 | // rdx : parameters pointer |
| 813 | // rdi : function |
| 814 | // rsp[0] : return address |
| 815 | |
| 816 | DCHECK(rdi.is(ArgumentsAccessNewDescriptor::function())); |
| 817 | DCHECK(rcx.is(ArgumentsAccessNewDescriptor::parameter_count())); |
| 818 | DCHECK(rdx.is(ArgumentsAccessNewDescriptor::parameter_pointer())); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 819 | |
| 820 | // Check if the calling frame is an arguments adaptor frame. |
| 821 | Label runtime; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 822 | __ movp(rbx, Operand(rbp, StandardFrameConstants::kCallerFPOffset)); |
| 823 | __ movp(rax, Operand(rbx, StandardFrameConstants::kContextOffset)); |
| 824 | __ Cmp(rax, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 825 | __ j(not_equal, &runtime); |
| 826 | |
| 827 | // Patch the arguments.length and the parameters pointer. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 828 | StackArgumentsAccessor args(rsp, 3, ARGUMENTS_DONT_CONTAIN_RECEIVER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 829 | __ movp(rcx, Operand(rbx, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 830 | __ SmiToInteger64(rax, rcx); |
| 831 | __ leap(rdx, Operand(rbx, rax, times_pointer_size, |
| 832 | StandardFrameConstants::kCallerSPOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 833 | |
| 834 | __ bind(&runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 835 | __ PopReturnAddressTo(rax); |
| 836 | __ Push(rdi); // Push function. |
| 837 | __ Push(rdx); // Push parameters pointer. |
| 838 | __ Push(rcx); // Push parameter count. |
| 839 | __ PushReturnAddressFrom(rax); |
| 840 | __ TailCallRuntime(Runtime::kNewSloppyArguments); |
| 841 | } |
| 842 | |
| 843 | |
| 844 | void RestParamAccessStub::GenerateNew(MacroAssembler* masm) { |
| 845 | // rcx : number of parameters (tagged) |
| 846 | // rdx : parameters pointer |
| 847 | // rbx : rest parameter index (tagged) |
| 848 | // rsp[0] : return address |
| 849 | |
| 850 | // Check if the calling frame is an arguments adaptor frame. |
| 851 | Label runtime; |
| 852 | __ movp(r8, Operand(rbp, StandardFrameConstants::kCallerFPOffset)); |
| 853 | __ movp(rax, Operand(r8, StandardFrameConstants::kContextOffset)); |
| 854 | __ Cmp(rax, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
| 855 | __ j(not_equal, &runtime); |
| 856 | |
| 857 | // Patch the arguments.length and the parameters pointer. |
| 858 | StackArgumentsAccessor args(rsp, 4, ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 859 | __ movp(rcx, Operand(r8, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 860 | __ SmiToInteger64(rax, rcx); |
| 861 | __ leap(rdx, Operand(r8, rax, times_pointer_size, |
| 862 | StandardFrameConstants::kCallerSPOffset)); |
| 863 | |
| 864 | __ bind(&runtime); |
| 865 | __ PopReturnAddressTo(rax); |
| 866 | __ Push(rcx); // Push number of parameters. |
| 867 | __ Push(rdx); // Push parameters pointer. |
| 868 | __ Push(rbx); // Push rest parameter index. |
| 869 | __ PushReturnAddressFrom(rax); |
| 870 | __ TailCallRuntime(Runtime::kNewRestParam); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 871 | } |
| 872 | |
| 873 | |
| 874 | void LoadIndexedInterceptorStub::Generate(MacroAssembler* masm) { |
| 875 | // Return address is on the stack. |
| 876 | Label slow; |
| 877 | |
| 878 | Register receiver = LoadDescriptor::ReceiverRegister(); |
| 879 | Register key = LoadDescriptor::NameRegister(); |
| 880 | Register scratch = rax; |
| 881 | DCHECK(!scratch.is(receiver) && !scratch.is(key)); |
| 882 | |
| 883 | // Check that the key is an array index, that is Uint32. |
| 884 | STATIC_ASSERT(kSmiValueSize <= 32); |
| 885 | __ JumpUnlessNonNegativeSmi(key, &slow); |
| 886 | |
| 887 | // Everything is fine, call runtime. |
| 888 | __ PopReturnAddressTo(scratch); |
| 889 | __ Push(receiver); // receiver |
| 890 | __ Push(key); // key |
| 891 | __ PushReturnAddressFrom(scratch); |
| 892 | |
| 893 | // Perform tail call to the entry. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 894 | __ TailCallRuntime(Runtime::kLoadElementWithInterceptor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 895 | |
| 896 | __ bind(&slow); |
| 897 | PropertyAccessCompiler::TailCallBuiltin( |
| 898 | masm, PropertyAccessCompiler::MissBuiltin(Code::KEYED_LOAD_IC)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 899 | } |
| 900 | |
| 901 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 902 | void LoadIndexedStringStub::Generate(MacroAssembler* masm) { |
| 903 | // Return address is on the stack. |
| 904 | Label miss; |
| 905 | |
| 906 | Register receiver = LoadDescriptor::ReceiverRegister(); |
| 907 | Register index = LoadDescriptor::NameRegister(); |
| 908 | Register scratch = rdi; |
| 909 | Register result = rax; |
| 910 | DCHECK(!scratch.is(receiver) && !scratch.is(index)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 911 | DCHECK(!scratch.is(LoadWithVectorDescriptor::VectorRegister()) && |
| 912 | result.is(LoadDescriptor::SlotRegister())); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 913 | |
| 914 | // StringCharAtGenerator doesn't use the result register until it's passed |
| 915 | // the different miss possibilities. If it did, we would have a conflict |
| 916 | // when FLAG_vector_ics is true. |
| 917 | StringCharAtGenerator char_at_generator(receiver, index, scratch, result, |
| 918 | &miss, // When not a string. |
| 919 | &miss, // When not a number. |
| 920 | &miss, // When index out of range. |
| 921 | STRING_INDEX_IS_ARRAY_INDEX, |
| 922 | RECEIVER_IS_STRING); |
| 923 | char_at_generator.GenerateFast(masm); |
| 924 | __ ret(0); |
| 925 | |
| 926 | StubRuntimeCallHelper call_helper; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 927 | char_at_generator.GenerateSlow(masm, PART_OF_IC_HANDLER, call_helper); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 928 | |
| 929 | __ bind(&miss); |
| 930 | PropertyAccessCompiler::TailCallBuiltin( |
| 931 | masm, PropertyAccessCompiler::MissBuiltin(Code::KEYED_LOAD_IC)); |
| 932 | } |
| 933 | |
| 934 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 935 | void ArgumentsAccessStub::GenerateNewStrict(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 936 | // rcx : number of parameters (tagged) |
| 937 | // rdx : parameters pointer |
| 938 | // rdi : function |
| 939 | // rsp[0] : return address |
| 940 | |
| 941 | DCHECK(rdi.is(ArgumentsAccessNewDescriptor::function())); |
| 942 | DCHECK(rcx.is(ArgumentsAccessNewDescriptor::parameter_count())); |
| 943 | DCHECK(rdx.is(ArgumentsAccessNewDescriptor::parameter_pointer())); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 944 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 945 | // Check if the calling frame is an arguments adaptor frame. |
| 946 | Label adaptor_frame, try_allocate, runtime; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 947 | __ movp(rbx, Operand(rbp, StandardFrameConstants::kCallerFPOffset)); |
| 948 | __ movp(rax, Operand(rbx, StandardFrameConstants::kContextOffset)); |
| 949 | __ Cmp(rax, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 950 | __ j(equal, &adaptor_frame); |
| 951 | |
| 952 | // Get the length from the frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 953 | __ SmiToInteger64(rax, rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 954 | __ jmp(&try_allocate); |
| 955 | |
| 956 | // Patch the arguments.length and the parameters pointer. |
| 957 | __ bind(&adaptor_frame); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 958 | __ movp(rcx, Operand(rbx, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 959 | __ SmiToInteger64(rax, rcx); |
| 960 | __ leap(rdx, Operand(rbx, rax, times_pointer_size, |
| 961 | StandardFrameConstants::kCallerSPOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 962 | |
| 963 | // Try the new space allocation. Start out with computing the size of |
| 964 | // the arguments object and the elements array. |
| 965 | Label add_arguments_object; |
| 966 | __ bind(&try_allocate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 967 | __ testp(rax, rax); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 968 | __ j(zero, &add_arguments_object, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 969 | __ leap(rax, Operand(rax, times_pointer_size, FixedArray::kHeaderSize)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 970 | __ bind(&add_arguments_object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 971 | __ addp(rax, Immediate(Heap::kStrictArgumentsObjectSize)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 972 | |
| 973 | // Do the allocation of both objects in one go. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 974 | __ Allocate(rax, rax, rbx, no_reg, &runtime, TAG_OBJECT); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 975 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 976 | // Get the arguments map from the current native context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 977 | __ movp(rdi, NativeContextOperand()); |
| 978 | __ movp(rdi, ContextOperand(rdi, Context::STRICT_ARGUMENTS_MAP_INDEX)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 979 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 980 | __ movp(FieldOperand(rax, JSObject::kMapOffset), rdi); |
| 981 | __ LoadRoot(kScratchRegister, Heap::kEmptyFixedArrayRootIndex); |
| 982 | __ movp(FieldOperand(rax, JSObject::kPropertiesOffset), kScratchRegister); |
| 983 | __ movp(FieldOperand(rax, JSObject::kElementsOffset), kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 984 | |
| 985 | // Get the length (smi tagged) and set that as an in-object property too. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 986 | STATIC_ASSERT(Heap::kArgumentsLengthIndex == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 987 | __ movp(FieldOperand(rax, JSObject::kHeaderSize + |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 988 | Heap::kArgumentsLengthIndex * kPointerSize), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 989 | rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 990 | |
| 991 | // If there are no actual arguments, we're done. |
| 992 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 993 | __ testp(rcx, rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 994 | __ j(zero, &done); |
| 995 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 996 | // Set up the elements pointer in the allocated arguments object and |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 997 | // initialize the header in the elements fixed array. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 998 | __ leap(rdi, Operand(rax, Heap::kStrictArgumentsObjectSize)); |
| 999 | __ movp(FieldOperand(rax, JSObject::kElementsOffset), rdi); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1000 | __ LoadRoot(kScratchRegister, Heap::kFixedArrayMapRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1001 | __ movp(FieldOperand(rdi, FixedArray::kMapOffset), kScratchRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1002 | __ movp(FieldOperand(rdi, FixedArray::kLengthOffset), rcx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1003 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1004 | // Untag the length for the loop below. |
| 1005 | __ SmiToInteger64(rcx, rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1006 | |
| 1007 | // Copy the fixed array slots. |
| 1008 | Label loop; |
| 1009 | __ bind(&loop); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1010 | __ movp(rbx, Operand(rdx, -1 * kPointerSize)); // Skip receiver. |
| 1011 | __ movp(FieldOperand(rdi, FixedArray::kHeaderSize), rbx); |
| 1012 | __ addp(rdi, Immediate(kPointerSize)); |
| 1013 | __ subp(rdx, Immediate(kPointerSize)); |
| 1014 | __ decp(rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1015 | __ j(not_zero, &loop); |
| 1016 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1017 | // Return. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1018 | __ bind(&done); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1019 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1020 | |
| 1021 | // Do the runtime call to allocate the arguments object. |
| 1022 | __ bind(&runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1023 | __ PopReturnAddressTo(rax); |
| 1024 | __ Push(rdi); // Push function. |
| 1025 | __ Push(rdx); // Push parameters pointer. |
| 1026 | __ Push(rcx); // Push parameter count. |
| 1027 | __ PushReturnAddressFrom(rax); |
| 1028 | __ TailCallRuntime(Runtime::kNewStrictArguments); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1029 | } |
| 1030 | |
| 1031 | |
| 1032 | void RegExpExecStub::Generate(MacroAssembler* masm) { |
| 1033 | // Just jump directly to runtime if native RegExp is not selected at compile |
| 1034 | // time or if regexp entry in generated code is turned off runtime switch or |
| 1035 | // at compilation. |
| 1036 | #ifdef V8_INTERPRETED_REGEXP |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1037 | __ TailCallRuntime(Runtime::kRegExpExec); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1038 | #else // V8_INTERPRETED_REGEXP |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1039 | |
| 1040 | // Stack frame on entry. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1041 | // rsp[0] : return address |
| 1042 | // rsp[8] : last_match_info (expected JSArray) |
| 1043 | // rsp[16] : previous index |
| 1044 | // rsp[24] : subject string |
| 1045 | // rsp[32] : JSRegExp object |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1046 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1047 | enum RegExpExecStubArgumentIndices { |
| 1048 | JS_REG_EXP_OBJECT_ARGUMENT_INDEX, |
| 1049 | SUBJECT_STRING_ARGUMENT_INDEX, |
| 1050 | PREVIOUS_INDEX_ARGUMENT_INDEX, |
| 1051 | LAST_MATCH_INFO_ARGUMENT_INDEX, |
| 1052 | REG_EXP_EXEC_ARGUMENT_COUNT |
| 1053 | }; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1054 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1055 | StackArgumentsAccessor args(rsp, REG_EXP_EXEC_ARGUMENT_COUNT, |
| 1056 | ARGUMENTS_DONT_CONTAIN_RECEIVER); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1057 | Label runtime; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1058 | // Ensure that a RegExp stack is allocated. |
| 1059 | ExternalReference address_of_regexp_stack_memory_address = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1060 | ExternalReference::address_of_regexp_stack_memory_address(isolate()); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1061 | ExternalReference address_of_regexp_stack_memory_size = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1062 | ExternalReference::address_of_regexp_stack_memory_size(isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1063 | __ Load(kScratchRegister, address_of_regexp_stack_memory_size); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1064 | __ testp(kScratchRegister, kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1065 | __ j(zero, &runtime); |
| 1066 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1067 | // Check that the first argument is a JSRegExp object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1068 | __ movp(rax, args.GetArgumentOperand(JS_REG_EXP_OBJECT_ARGUMENT_INDEX)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1069 | __ JumpIfSmi(rax, &runtime); |
| 1070 | __ CmpObjectType(rax, JS_REGEXP_TYPE, kScratchRegister); |
| 1071 | __ j(not_equal, &runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1072 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1073 | // Check that the RegExp has been compiled (data contains a fixed array). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1074 | __ movp(rax, FieldOperand(rax, JSRegExp::kDataOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1075 | if (FLAG_debug_code) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1076 | Condition is_smi = masm->CheckSmi(rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1077 | __ Check(NegateCondition(is_smi), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1078 | kUnexpectedTypeForRegExpDataFixedArrayExpected); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1079 | __ CmpObjectType(rax, FIXED_ARRAY_TYPE, kScratchRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1080 | __ Check(equal, kUnexpectedTypeForRegExpDataFixedArrayExpected); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1081 | } |
| 1082 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1083 | // rax: RegExp data (FixedArray) |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1084 | // Check the type of the RegExp. Only continue if type is JSRegExp::IRREGEXP. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1085 | __ SmiToInteger32(rbx, FieldOperand(rax, JSRegExp::kDataTagOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1086 | __ cmpl(rbx, Immediate(JSRegExp::IRREGEXP)); |
| 1087 | __ j(not_equal, &runtime); |
| 1088 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1089 | // rax: RegExp data (FixedArray) |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1090 | // Check that the number of captures fit in the static offsets vector buffer. |
| 1091 | __ SmiToInteger32(rdx, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1092 | FieldOperand(rax, JSRegExp::kIrregexpCaptureCountOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1093 | // Check (number_of_captures + 1) * 2 <= offsets vector size |
| 1094 | // Or number_of_captures <= offsets vector size / 2 - 1 |
| 1095 | STATIC_ASSERT(Isolate::kJSRegexpStaticOffsetsVectorSize >= 2); |
| 1096 | __ cmpl(rdx, Immediate(Isolate::kJSRegexpStaticOffsetsVectorSize / 2 - 1)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1097 | __ j(above, &runtime); |
| 1098 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1099 | // Reset offset for possibly sliced string. |
| 1100 | __ Set(r14, 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1101 | __ movp(rdi, args.GetArgumentOperand(SUBJECT_STRING_ARGUMENT_INDEX)); |
| 1102 | __ JumpIfSmi(rdi, &runtime); |
| 1103 | __ movp(r15, rdi); // Make a copy of the original subject string. |
| 1104 | __ movp(rbx, FieldOperand(rdi, HeapObject::kMapOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1105 | __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1106 | // rax: RegExp data (FixedArray) |
| 1107 | // rdi: subject string |
| 1108 | // r15: subject string |
| 1109 | // Handle subject string according to its encoding and representation: |
| 1110 | // (1) Sequential two byte? If yes, go to (9). |
| 1111 | // (2) Sequential one byte? If yes, go to (6). |
| 1112 | // (3) Anything but sequential or cons? If yes, go to (7). |
| 1113 | // (4) Cons string. If the string is flat, replace subject with first string. |
| 1114 | // Otherwise bailout. |
| 1115 | // (5a) Is subject sequential two byte? If yes, go to (9). |
| 1116 | // (5b) Is subject external? If yes, go to (8). |
| 1117 | // (6) One byte sequential. Load regexp code for one byte. |
| 1118 | // (E) Carry on. |
| 1119 | /// [...] |
| 1120 | |
| 1121 | // Deferred code at the end of the stub: |
| 1122 | // (7) Not a long external string? If yes, go to (10). |
| 1123 | // (8) External string. Make it, offset-wise, look like a sequential string. |
| 1124 | // (8a) Is the external string one byte? If yes, go to (6). |
| 1125 | // (9) Two byte sequential. Load regexp code for one byte. Go to (E). |
| 1126 | // (10) Short external string or not a string? If yes, bail out to runtime. |
| 1127 | // (11) Sliced string. Replace subject with parent. Go to (5a). |
| 1128 | |
| 1129 | Label seq_one_byte_string /* 6 */, seq_two_byte_string /* 9 */, |
| 1130 | external_string /* 8 */, check_underlying /* 5a */, |
| 1131 | not_seq_nor_cons /* 7 */, check_code /* E */, |
| 1132 | not_long_external /* 10 */; |
| 1133 | |
| 1134 | // (1) Sequential two byte? If yes, go to (9). |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1135 | __ andb(rbx, Immediate(kIsNotStringMask | |
| 1136 | kStringRepresentationMask | |
| 1137 | kStringEncodingMask | |
| 1138 | kShortExternalStringMask)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1139 | STATIC_ASSERT((kStringTag | kSeqStringTag | kTwoByteStringTag) == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1140 | __ j(zero, &seq_two_byte_string); // Go to (9). |
| 1141 | |
| 1142 | // (2) Sequential one byte? If yes, go to (6). |
| 1143 | // Any other sequential string must be one byte. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1144 | __ andb(rbx, Immediate(kIsNotStringMask | |
| 1145 | kStringRepresentationMask | |
| 1146 | kShortExternalStringMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1147 | __ j(zero, &seq_one_byte_string, Label::kNear); // Go to (6). |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1148 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1149 | // (3) Anything but sequential or cons? If yes, go to (7). |
| 1150 | // We check whether the subject string is a cons, since sequential strings |
| 1151 | // have already been covered. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1152 | STATIC_ASSERT(kConsStringTag < kExternalStringTag); |
| 1153 | STATIC_ASSERT(kSlicedStringTag > kExternalStringTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1154 | STATIC_ASSERT(kIsNotStringMask > kExternalStringTag); |
| 1155 | STATIC_ASSERT(kShortExternalStringTag > kExternalStringTag); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1156 | __ cmpp(rbx, Immediate(kExternalStringTag)); |
| 1157 | __ j(greater_equal, ¬_seq_nor_cons); // Go to (7). |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1158 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1159 | // (4) Cons string. Check that it's flat. |
| 1160 | // Replace subject with first string and reload instance type. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1161 | __ CompareRoot(FieldOperand(rdi, ConsString::kSecondOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1162 | Heap::kempty_stringRootIndex); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1163 | __ j(not_equal, &runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1164 | __ movp(rdi, FieldOperand(rdi, ConsString::kFirstOffset)); |
| 1165 | __ bind(&check_underlying); |
| 1166 | __ movp(rbx, FieldOperand(rdi, HeapObject::kMapOffset)); |
| 1167 | __ movp(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
| 1168 | |
| 1169 | // (5a) Is subject sequential two byte? If yes, go to (9). |
| 1170 | __ testb(rbx, Immediate(kStringRepresentationMask | kStringEncodingMask)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1171 | STATIC_ASSERT((kSeqStringTag | kTwoByteStringTag) == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1172 | __ j(zero, &seq_two_byte_string); // Go to (9). |
| 1173 | // (5b) Is subject external? If yes, go to (8). |
| 1174 | __ testb(rbx, Immediate(kStringRepresentationMask)); |
| 1175 | // The underlying external string is never a short external string. |
| 1176 | STATIC_ASSERT(ExternalString::kMaxShortLength < ConsString::kMinLength); |
| 1177 | STATIC_ASSERT(ExternalString::kMaxShortLength < SlicedString::kMinLength); |
| 1178 | __ j(not_zero, &external_string); // Go to (8) |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1179 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1180 | // (6) One byte sequential. Load regexp code for one byte. |
| 1181 | __ bind(&seq_one_byte_string); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1182 | // rax: RegExp data (FixedArray) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1183 | __ movp(r11, FieldOperand(rax, JSRegExp::kDataOneByteCodeOffset)); |
| 1184 | __ Set(rcx, 1); // Type is one byte. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1185 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1186 | // (E) Carry on. String handling is done. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1187 | __ bind(&check_code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1188 | // r11: irregexp code |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1189 | // Check that the irregexp code has been generated for the actual string |
| 1190 | // encoding. If it has, the field contains a code object otherwise it contains |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1191 | // smi (code flushing support) |
| 1192 | __ JumpIfSmi(r11, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1193 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1194 | // rdi: sequential subject string (or look-alike, external string) |
| 1195 | // r15: original subject string |
| 1196 | // rcx: encoding of subject string (1 if one_byte, 0 if two_byte); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1197 | // r11: code |
| 1198 | // Load used arguments before starting to push arguments for call to native |
| 1199 | // RegExp code to avoid handling changing stack height. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1200 | // We have to use r15 instead of rdi to load the length because rdi might |
| 1201 | // have been only made to look like a sequential string when it actually |
| 1202 | // is an external string. |
| 1203 | __ movp(rbx, args.GetArgumentOperand(PREVIOUS_INDEX_ARGUMENT_INDEX)); |
| 1204 | __ JumpIfNotSmi(rbx, &runtime); |
| 1205 | __ SmiCompare(rbx, FieldOperand(r15, String::kLengthOffset)); |
| 1206 | __ j(above_equal, &runtime); |
| 1207 | __ SmiToInteger64(rbx, rbx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1208 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1209 | // rdi: subject string |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1210 | // rbx: previous index |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1211 | // rcx: encoding of subject string (1 if one_byte 0 if two_byte); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1212 | // r11: code |
| 1213 | // All checks done. Now push arguments for native regexp code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1214 | Counters* counters = isolate()->counters(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1215 | __ IncrementCounter(counters->regexp_entry_native(), 1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1216 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1217 | // Isolates: note we add an additional parameter here (isolate pointer). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1218 | static const int kRegExpExecuteArguments = 9; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1219 | int argument_slots_on_stack = |
| 1220 | masm->ArgumentStackSlotsForCFunctionCall(kRegExpExecuteArguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1221 | __ EnterApiExitFrame(argument_slots_on_stack); |
| 1222 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1223 | // Argument 9: Pass current isolate address. |
| 1224 | __ LoadAddress(kScratchRegister, |
| 1225 | ExternalReference::isolate_address(isolate())); |
| 1226 | __ movq(Operand(rsp, (argument_slots_on_stack - 1) * kRegisterSize), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1227 | kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1228 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1229 | // Argument 8: Indicate that this is a direct call from JavaScript. |
| 1230 | __ movq(Operand(rsp, (argument_slots_on_stack - 2) * kRegisterSize), |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1231 | Immediate(1)); |
| 1232 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1233 | // Argument 7: Start (high end) of backtracking stack memory area. |
| 1234 | __ Move(kScratchRegister, address_of_regexp_stack_memory_address); |
| 1235 | __ movp(r9, Operand(kScratchRegister, 0)); |
| 1236 | __ Move(kScratchRegister, address_of_regexp_stack_memory_size); |
| 1237 | __ addp(r9, Operand(kScratchRegister, 0)); |
| 1238 | __ movq(Operand(rsp, (argument_slots_on_stack - 3) * kRegisterSize), r9); |
| 1239 | |
| 1240 | // Argument 6: Set the number of capture registers to zero to force global |
| 1241 | // regexps to behave as non-global. This does not affect non-global regexps. |
| 1242 | // Argument 6 is passed in r9 on Linux and on the stack on Windows. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1243 | #ifdef _WIN64 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1244 | __ movq(Operand(rsp, (argument_slots_on_stack - 4) * kRegisterSize), |
| 1245 | Immediate(0)); |
| 1246 | #else |
| 1247 | __ Set(r9, 0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1248 | #endif |
| 1249 | |
| 1250 | // Argument 5: static offsets vector buffer. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1251 | __ LoadAddress( |
| 1252 | r8, ExternalReference::address_of_static_offsets_vector(isolate())); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1253 | // Argument 5 passed in r8 on Linux and on the stack on Windows. |
| 1254 | #ifdef _WIN64 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1255 | __ movq(Operand(rsp, (argument_slots_on_stack - 5) * kRegisterSize), r8); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1256 | #endif |
| 1257 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1258 | // rdi: subject string |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1259 | // rbx: previous index |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1260 | // rcx: encoding of subject string (1 if one_byte 0 if two_byte); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1261 | // r11: code |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1262 | // r14: slice offset |
| 1263 | // r15: original subject string |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1264 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1265 | // Argument 2: Previous index. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1266 | __ movp(arg_reg_2, rbx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1267 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1268 | // Argument 4: End of string data |
| 1269 | // Argument 3: Start of string data |
| 1270 | Label setup_two_byte, setup_rest, got_length, length_not_from_slice; |
| 1271 | // Prepare start and end index of the input. |
| 1272 | // Load the length from the original sliced string if that is the case. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1273 | __ addp(rbx, r14); |
| 1274 | __ SmiToInteger32(arg_reg_3, FieldOperand(r15, String::kLengthOffset)); |
| 1275 | __ addp(r14, arg_reg_3); // Using arg3 as scratch. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1276 | |
| 1277 | // rbx: start index of the input |
| 1278 | // r14: end index of the input |
| 1279 | // r15: original subject string |
| 1280 | __ testb(rcx, rcx); // Last use of rcx as encoding of subject string. |
| 1281 | __ j(zero, &setup_two_byte, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1282 | __ leap(arg_reg_4, |
| 1283 | FieldOperand(rdi, r14, times_1, SeqOneByteString::kHeaderSize)); |
| 1284 | __ leap(arg_reg_3, |
| 1285 | FieldOperand(rdi, rbx, times_1, SeqOneByteString::kHeaderSize)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1286 | __ jmp(&setup_rest, Label::kNear); |
| 1287 | __ bind(&setup_two_byte); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1288 | __ leap(arg_reg_4, |
| 1289 | FieldOperand(rdi, r14, times_2, SeqTwoByteString::kHeaderSize)); |
| 1290 | __ leap(arg_reg_3, |
| 1291 | FieldOperand(rdi, rbx, times_2, SeqTwoByteString::kHeaderSize)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1292 | __ bind(&setup_rest); |
| 1293 | |
| 1294 | // Argument 1: Original subject string. |
| 1295 | // The original subject is in the previous stack frame. Therefore we have to |
| 1296 | // use rbp, which points exactly to one pointer size below the previous rsp. |
| 1297 | // (Because creating a new stack frame pushes the previous rbp onto the stack |
| 1298 | // and thereby moves up rsp by one kPointerSize.) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1299 | __ movp(arg_reg_1, r15); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1300 | |
| 1301 | // Locate the code entry and call it. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1302 | __ addp(r11, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1303 | __ call(r11); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1304 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1305 | __ LeaveApiExitFrame(true); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1306 | |
| 1307 | // Check the result. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1308 | Label success; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1309 | Label exception; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1310 | __ cmpl(rax, Immediate(1)); |
| 1311 | // We expect exactly one result since we force the called regexp to behave |
| 1312 | // as non-global. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1313 | __ j(equal, &success, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1314 | __ cmpl(rax, Immediate(NativeRegExpMacroAssembler::EXCEPTION)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1315 | __ j(equal, &exception); |
| 1316 | __ cmpl(rax, Immediate(NativeRegExpMacroAssembler::FAILURE)); |
| 1317 | // If none of the above, it can only be retry. |
| 1318 | // Handle that in the runtime system. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1319 | __ j(not_equal, &runtime); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1320 | |
| 1321 | // For failure return null. |
| 1322 | __ LoadRoot(rax, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1323 | __ ret(REG_EXP_EXEC_ARGUMENT_COUNT * kPointerSize); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1324 | |
| 1325 | // Load RegExp data. |
| 1326 | __ bind(&success); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1327 | __ movp(rax, args.GetArgumentOperand(JS_REG_EXP_OBJECT_ARGUMENT_INDEX)); |
| 1328 | __ movp(rcx, FieldOperand(rax, JSRegExp::kDataOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1329 | __ SmiToInteger32(rax, |
| 1330 | FieldOperand(rcx, JSRegExp::kIrregexpCaptureCountOffset)); |
| 1331 | // Calculate number of capture registers (number_of_captures + 1) * 2. |
| 1332 | __ leal(rdx, Operand(rax, rax, times_1, 2)); |
| 1333 | |
| 1334 | // rdx: Number of capture registers |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1335 | // Check that the fourth object is a JSArray object. |
| 1336 | __ movp(r15, args.GetArgumentOperand(LAST_MATCH_INFO_ARGUMENT_INDEX)); |
| 1337 | __ JumpIfSmi(r15, &runtime); |
| 1338 | __ CmpObjectType(r15, JS_ARRAY_TYPE, kScratchRegister); |
| 1339 | __ j(not_equal, &runtime); |
| 1340 | // Check that the JSArray is in fast case. |
| 1341 | __ movp(rbx, FieldOperand(r15, JSArray::kElementsOffset)); |
| 1342 | __ movp(rax, FieldOperand(rbx, HeapObject::kMapOffset)); |
| 1343 | __ CompareRoot(rax, Heap::kFixedArrayMapRootIndex); |
| 1344 | __ j(not_equal, &runtime); |
| 1345 | // Check that the last match info has space for the capture registers and the |
| 1346 | // additional information. Ensure no overflow in add. |
| 1347 | STATIC_ASSERT(FixedArray::kMaxLength < kMaxInt - FixedArray::kLengthOffset); |
| 1348 | __ SmiToInteger32(rax, FieldOperand(rbx, FixedArray::kLengthOffset)); |
| 1349 | __ subl(rax, Immediate(RegExpImpl::kLastMatchOverhead)); |
| 1350 | __ cmpl(rdx, rax); |
| 1351 | __ j(greater, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1352 | |
| 1353 | // rbx: last_match_info backing store (FixedArray) |
| 1354 | // rdx: number of capture registers |
| 1355 | // Store the capture count. |
| 1356 | __ Integer32ToSmi(kScratchRegister, rdx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1357 | __ movp(FieldOperand(rbx, RegExpImpl::kLastCaptureCountOffset), |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1358 | kScratchRegister); |
| 1359 | // Store last subject and last input. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1360 | __ movp(rax, args.GetArgumentOperand(SUBJECT_STRING_ARGUMENT_INDEX)); |
| 1361 | __ movp(FieldOperand(rbx, RegExpImpl::kLastSubjectOffset), rax); |
| 1362 | __ movp(rcx, rax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1363 | __ RecordWriteField(rbx, |
| 1364 | RegExpImpl::kLastSubjectOffset, |
| 1365 | rax, |
| 1366 | rdi, |
| 1367 | kDontSaveFPRegs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1368 | __ movp(rax, rcx); |
| 1369 | __ movp(FieldOperand(rbx, RegExpImpl::kLastInputOffset), rax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1370 | __ RecordWriteField(rbx, |
| 1371 | RegExpImpl::kLastInputOffset, |
| 1372 | rax, |
| 1373 | rdi, |
| 1374 | kDontSaveFPRegs); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1375 | |
| 1376 | // Get the static offsets vector filled by the native regexp code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1377 | __ LoadAddress( |
| 1378 | rcx, ExternalReference::address_of_static_offsets_vector(isolate())); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1379 | |
| 1380 | // rbx: last_match_info backing store (FixedArray) |
| 1381 | // rcx: offsets vector |
| 1382 | // rdx: number of capture registers |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1383 | Label next_capture, done; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1384 | // Capture register counter starts from number of capture registers and |
| 1385 | // counts down until wraping after zero. |
| 1386 | __ bind(&next_capture); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1387 | __ subp(rdx, Immediate(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1388 | __ j(negative, &done, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1389 | // Read the value from the static offsets vector buffer and make it a smi. |
| 1390 | __ movl(rdi, Operand(rcx, rdx, times_int_size, 0)); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1391 | __ Integer32ToSmi(rdi, rdi); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1392 | // Store the smi value in the last match info. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1393 | __ movp(FieldOperand(rbx, |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1394 | rdx, |
| 1395 | times_pointer_size, |
| 1396 | RegExpImpl::kFirstCaptureOffset), |
| 1397 | rdi); |
| 1398 | __ jmp(&next_capture); |
| 1399 | __ bind(&done); |
| 1400 | |
| 1401 | // Return last match info. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1402 | __ movp(rax, r15); |
| 1403 | __ ret(REG_EXP_EXEC_ARGUMENT_COUNT * kPointerSize); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1404 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1405 | __ bind(&exception); |
| 1406 | // Result must now be exception. If there is no pending exception already a |
| 1407 | // stack overflow (on the backtrack stack) was detected in RegExp code but |
| 1408 | // haven't created the exception yet. Handle that in the runtime system. |
| 1409 | // TODO(592): Rerunning the RegExp to get the stack overflow exception. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1410 | ExternalReference pending_exception_address( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1411 | Isolate::kPendingExceptionAddress, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1412 | Operand pending_exception_operand = |
| 1413 | masm->ExternalOperand(pending_exception_address, rbx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1414 | __ movp(rax, pending_exception_operand); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1415 | __ LoadRoot(rdx, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1416 | __ cmpp(rax, rdx); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1417 | __ j(equal, &runtime); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1418 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1419 | // For exception, throw the exception again. |
| 1420 | __ TailCallRuntime(Runtime::kRegExpExecReThrow); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1421 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1422 | // Do the runtime call to execute the regexp. |
| 1423 | __ bind(&runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1424 | __ TailCallRuntime(Runtime::kRegExpExec); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1425 | |
| 1426 | // Deferred code for string handling. |
| 1427 | // (7) Not a long external string? If yes, go to (10). |
| 1428 | __ bind(¬_seq_nor_cons); |
| 1429 | // Compare flags are still set from (3). |
| 1430 | __ j(greater, ¬_long_external, Label::kNear); // Go to (10). |
| 1431 | |
| 1432 | // (8) External string. Short external strings have been ruled out. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1433 | __ bind(&external_string); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1434 | __ movp(rbx, FieldOperand(rdi, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1435 | __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
| 1436 | if (FLAG_debug_code) { |
| 1437 | // Assert that we do not have a cons or slice (indirect strings) here. |
| 1438 | // Sequential strings have already been ruled out. |
| 1439 | __ testb(rbx, Immediate(kIsIndirectStringMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1440 | __ Assert(zero, kExternalStringExpectedButNotFound); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1441 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1442 | __ movp(rdi, FieldOperand(rdi, ExternalString::kResourceDataOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1443 | // Move the pointer so that offset-wise, it looks like a sequential string. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1444 | STATIC_ASSERT(SeqTwoByteString::kHeaderSize == SeqOneByteString::kHeaderSize); |
| 1445 | __ subp(rdi, Immediate(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1446 | STATIC_ASSERT(kTwoByteStringTag == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1447 | // (8a) Is the external string one byte? If yes, go to (6). |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1448 | __ testb(rbx, Immediate(kStringEncodingMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1449 | __ j(not_zero, &seq_one_byte_string); // Goto (6). |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1450 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1451 | // rdi: subject string (flat two-byte) |
| 1452 | // rax: RegExp data (FixedArray) |
| 1453 | // (9) Two byte sequential. Load regexp code for one byte. Go to (E). |
| 1454 | __ bind(&seq_two_byte_string); |
| 1455 | __ movp(r11, FieldOperand(rax, JSRegExp::kDataUC16CodeOffset)); |
| 1456 | __ Set(rcx, 0); // Type is two byte. |
| 1457 | __ jmp(&check_code); // Go to (E). |
| 1458 | |
| 1459 | // (10) Not a string or a short external string? If yes, bail out to runtime. |
| 1460 | __ bind(¬_long_external); |
| 1461 | // Catch non-string subject or short external string. |
| 1462 | STATIC_ASSERT(kNotStringTag != 0 && kShortExternalStringTag !=0); |
| 1463 | __ testb(rbx, Immediate(kIsNotStringMask | kShortExternalStringMask)); |
| 1464 | __ j(not_zero, &runtime); |
| 1465 | |
| 1466 | // (11) Sliced string. Replace subject with parent. Go to (5a). |
| 1467 | // Load offset into r14 and replace subject string with parent. |
| 1468 | __ SmiToInteger32(r14, FieldOperand(rdi, SlicedString::kOffsetOffset)); |
| 1469 | __ movp(rdi, FieldOperand(rdi, SlicedString::kParentOffset)); |
| 1470 | __ jmp(&check_underlying); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1471 | #endif // V8_INTERPRETED_REGEXP |
| 1472 | } |
| 1473 | |
| 1474 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1475 | static int NegativeComparisonResult(Condition cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1476 | DCHECK(cc != equal); |
| 1477 | DCHECK((cc == less) || (cc == less_equal) |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1478 | || (cc == greater) || (cc == greater_equal)); |
| 1479 | return (cc == greater || cc == greater_equal) ? LESS : GREATER; |
| 1480 | } |
| 1481 | |
| 1482 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1483 | static void CheckInputType(MacroAssembler* masm, Register input, |
| 1484 | CompareICState::State expected, Label* fail) { |
| 1485 | Label ok; |
| 1486 | if (expected == CompareICState::SMI) { |
| 1487 | __ JumpIfNotSmi(input, fail); |
| 1488 | } else if (expected == CompareICState::NUMBER) { |
| 1489 | __ JumpIfSmi(input, &ok); |
| 1490 | __ CompareMap(input, masm->isolate()->factory()->heap_number_map()); |
| 1491 | __ j(not_equal, fail); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1492 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1493 | // We could be strict about internalized/non-internalized here, but as long as |
| 1494 | // hydrogen doesn't care, the stub doesn't have to care either. |
| 1495 | __ bind(&ok); |
| 1496 | } |
| 1497 | |
| 1498 | |
| 1499 | static void BranchIfNotInternalizedString(MacroAssembler* masm, |
| 1500 | Label* label, |
| 1501 | Register object, |
| 1502 | Register scratch) { |
| 1503 | __ JumpIfSmi(object, label); |
| 1504 | __ movp(scratch, FieldOperand(object, HeapObject::kMapOffset)); |
| 1505 | __ movzxbp(scratch, |
| 1506 | FieldOperand(scratch, Map::kInstanceTypeOffset)); |
| 1507 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 1508 | __ testb(scratch, Immediate(kIsNotStringMask | kIsNotInternalizedMask)); |
| 1509 | __ j(not_zero, label); |
| 1510 | } |
| 1511 | |
| 1512 | |
| 1513 | void CompareICStub::GenerateGeneric(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1514 | Label runtime_call, check_unequal_objects, done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1515 | Condition cc = GetCondition(); |
| 1516 | Factory* factory = isolate()->factory(); |
| 1517 | |
| 1518 | Label miss; |
| 1519 | CheckInputType(masm, rdx, left(), &miss); |
| 1520 | CheckInputType(masm, rax, right(), &miss); |
| 1521 | |
| 1522 | // Compare two smis. |
| 1523 | Label non_smi, smi_done; |
| 1524 | __ JumpIfNotBothSmi(rax, rdx, &non_smi); |
| 1525 | __ subp(rdx, rax); |
| 1526 | __ j(no_overflow, &smi_done); |
| 1527 | __ notp(rdx); // Correct sign in case of overflow. rdx cannot be 0 here. |
| 1528 | __ bind(&smi_done); |
| 1529 | __ movp(rax, rdx); |
| 1530 | __ ret(0); |
| 1531 | __ bind(&non_smi); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1532 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1533 | // The compare stub returns a positive, negative, or zero 64-bit integer |
| 1534 | // value in rax, corresponding to result of comparing the two inputs. |
| 1535 | // NOTICE! This code is only reached after a smi-fast-case check, so |
| 1536 | // it is certain that at least one operand isn't a smi. |
| 1537 | |
| 1538 | // Two identical objects are equal unless they are both NaN or undefined. |
| 1539 | { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1540 | Label not_identical; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1541 | __ cmpp(rax, rdx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1542 | __ j(not_equal, ¬_identical, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1543 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1544 | if (cc != equal) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1545 | // Check for undefined. undefined OP undefined is false even though |
| 1546 | // undefined == undefined. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1547 | __ CompareRoot(rdx, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1548 | if (is_strong(strength())) { |
| 1549 | // In strong mode, this comparison must throw, so call the runtime. |
| 1550 | __ j(equal, &runtime_call, Label::kFar); |
| 1551 | } else { |
| 1552 | Label check_for_nan; |
| 1553 | __ j(not_equal, &check_for_nan, Label::kNear); |
| 1554 | __ Set(rax, NegativeComparisonResult(cc)); |
| 1555 | __ ret(0); |
| 1556 | __ bind(&check_for_nan); |
| 1557 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1558 | } |
| 1559 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1560 | // Test for NaN. Sadly, we can't just compare to Factory::nan_value(), |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1561 | // so we do the second best thing - test it ourselves. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1562 | Label heap_number; |
| 1563 | // If it's not a heap number, then return equal for (in)equality operator. |
| 1564 | __ Cmp(FieldOperand(rdx, HeapObject::kMapOffset), |
| 1565 | factory->heap_number_map()); |
| 1566 | __ j(equal, &heap_number, Label::kNear); |
| 1567 | if (cc != equal) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1568 | __ movp(rcx, FieldOperand(rax, HeapObject::kMapOffset)); |
| 1569 | __ movzxbl(rcx, FieldOperand(rcx, Map::kInstanceTypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1570 | // Call runtime on identical objects. Otherwise return equal. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1571 | __ cmpb(rcx, Immediate(static_cast<uint8_t>(FIRST_JS_RECEIVER_TYPE))); |
| 1572 | __ j(above_equal, &runtime_call, Label::kFar); |
| 1573 | // Call runtime on identical symbols since we need to throw a TypeError. |
| 1574 | __ cmpb(rcx, Immediate(static_cast<uint8_t>(SYMBOL_TYPE))); |
| 1575 | __ j(equal, &runtime_call, Label::kFar); |
| 1576 | // Call runtime on identical SIMD values since we must throw a TypeError. |
| 1577 | __ cmpb(rcx, Immediate(static_cast<uint8_t>(SIMD128_VALUE_TYPE))); |
| 1578 | __ j(equal, &runtime_call, Label::kFar); |
| 1579 | if (is_strong(strength())) { |
| 1580 | // We have already tested for smis and heap numbers, so if both |
| 1581 | // arguments are not strings we must proceed to the slow case. |
| 1582 | __ testb(rcx, Immediate(kIsNotStringMask)); |
| 1583 | __ j(not_zero, &runtime_call, Label::kFar); |
| 1584 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1585 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1586 | __ Set(rax, EQUAL); |
| 1587 | __ ret(0); |
| 1588 | |
| 1589 | __ bind(&heap_number); |
| 1590 | // It is a heap number, so return equal if it's not NaN. |
| 1591 | // For NaN, return 1 for every condition except greater and |
| 1592 | // greater-equal. Return -1 for them, so the comparison yields |
| 1593 | // false for all conditions except not-equal. |
| 1594 | __ Set(rax, EQUAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1595 | __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset)); |
| 1596 | __ Ucomisd(xmm0, xmm0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1597 | __ setcc(parity_even, rax); |
| 1598 | // rax is 0 for equal non-NaN heapnumbers, 1 for NaNs. |
| 1599 | if (cc == greater_equal || cc == greater) { |
| 1600 | __ negp(rax); |
| 1601 | } |
| 1602 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1603 | |
| 1604 | __ bind(¬_identical); |
| 1605 | } |
| 1606 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1607 | if (cc == equal) { // Both strict and non-strict. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1608 | Label slow; // Fallthrough label. |
| 1609 | |
| 1610 | // If we're doing a strict equality comparison, we don't have to do |
| 1611 | // type conversion, so we generate code to do fast comparison for objects |
| 1612 | // and oddballs. Non-smi numbers and strings still go through the usual |
| 1613 | // slow-case code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1614 | if (strict()) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1615 | // If either is a Smi (we know that not both are), then they can only |
| 1616 | // be equal if the other is a HeapNumber. If so, use the slow case. |
| 1617 | { |
| 1618 | Label not_smis; |
| 1619 | __ SelectNonSmi(rbx, rax, rdx, ¬_smis); |
| 1620 | |
| 1621 | // Check if the non-smi operand is a heap number. |
| 1622 | __ Cmp(FieldOperand(rbx, HeapObject::kMapOffset), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1623 | factory->heap_number_map()); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1624 | // If heap number, handle it in the slow case. |
| 1625 | __ j(equal, &slow); |
| 1626 | // Return non-equal. ebx (the lower half of rbx) is not zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1627 | __ movp(rax, rbx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1628 | __ ret(0); |
| 1629 | |
| 1630 | __ bind(¬_smis); |
| 1631 | } |
| 1632 | |
| 1633 | // If either operand is a JSObject or an oddball value, then they are not |
| 1634 | // equal since their pointers are different |
| 1635 | // There is no test for undetectability in strict equality. |
| 1636 | |
| 1637 | // If the first object is a JS object, we have done pointer comparison. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1638 | STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1639 | Label first_non_object; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1640 | __ CmpObjectType(rax, FIRST_JS_RECEIVER_TYPE, rcx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1641 | __ j(below, &first_non_object, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1642 | // Return non-zero (rax (not rax) is not zero) |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1643 | Label return_not_equal; |
| 1644 | STATIC_ASSERT(kHeapObjectTag != 0); |
| 1645 | __ bind(&return_not_equal); |
| 1646 | __ ret(0); |
| 1647 | |
| 1648 | __ bind(&first_non_object); |
| 1649 | // Check for oddballs: true, false, null, undefined. |
| 1650 | __ CmpInstanceType(rcx, ODDBALL_TYPE); |
| 1651 | __ j(equal, &return_not_equal); |
| 1652 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1653 | __ CmpObjectType(rdx, FIRST_JS_RECEIVER_TYPE, rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1654 | __ j(above_equal, &return_not_equal); |
| 1655 | |
| 1656 | // Check for oddballs: true, false, null, undefined. |
| 1657 | __ CmpInstanceType(rcx, ODDBALL_TYPE); |
| 1658 | __ j(equal, &return_not_equal); |
| 1659 | |
| 1660 | // Fall through to the general case. |
| 1661 | } |
| 1662 | __ bind(&slow); |
| 1663 | } |
| 1664 | |
| 1665 | // Generate the number comparison code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1666 | Label non_number_comparison; |
| 1667 | Label unordered; |
| 1668 | FloatingPointHelper::LoadSSE2UnknownOperands(masm, &non_number_comparison); |
| 1669 | __ xorl(rax, rax); |
| 1670 | __ xorl(rcx, rcx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1671 | __ Ucomisd(xmm0, xmm1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1672 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1673 | // Don't base result on EFLAGS when a NaN is involved. |
| 1674 | __ j(parity_even, &unordered, Label::kNear); |
| 1675 | // Return a result of -1, 0, or 1, based on EFLAGS. |
| 1676 | __ setcc(above, rax); |
| 1677 | __ setcc(below, rcx); |
| 1678 | __ subp(rax, rcx); |
| 1679 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1680 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1681 | // If one of the numbers was NaN, then the result is always false. |
| 1682 | // The cc is never not-equal. |
| 1683 | __ bind(&unordered); |
| 1684 | DCHECK(cc != not_equal); |
| 1685 | if (cc == less || cc == less_equal) { |
| 1686 | __ Set(rax, 1); |
| 1687 | } else { |
| 1688 | __ Set(rax, -1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1689 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1690 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1691 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1692 | // The number comparison code did not provide a valid result. |
| 1693 | __ bind(&non_number_comparison); |
| 1694 | |
| 1695 | // Fast negative check for internalized-to-internalized equality. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1696 | Label check_for_strings; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1697 | if (cc == equal) { |
| 1698 | BranchIfNotInternalizedString( |
| 1699 | masm, &check_for_strings, rax, kScratchRegister); |
| 1700 | BranchIfNotInternalizedString( |
| 1701 | masm, &check_for_strings, rdx, kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1702 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1703 | // We've already checked for object identity, so if both operands are |
| 1704 | // internalized strings they aren't equal. Register rax (not rax) already |
| 1705 | // holds a non-zero value, which indicates not equal, so just return. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1706 | __ ret(0); |
| 1707 | } |
| 1708 | |
| 1709 | __ bind(&check_for_strings); |
| 1710 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1711 | __ JumpIfNotBothSequentialOneByteStrings(rdx, rax, rcx, rbx, |
| 1712 | &check_unequal_objects); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1713 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1714 | // Inline comparison of one-byte strings. |
| 1715 | if (cc == equal) { |
| 1716 | StringHelper::GenerateFlatOneByteStringEquals(masm, rdx, rax, rcx, rbx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1717 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1718 | StringHelper::GenerateCompareFlatOneByteStrings(masm, rdx, rax, rcx, rbx, |
| 1719 | rdi, r8); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1720 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1721 | |
| 1722 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1723 | __ Abort(kUnexpectedFallThroughFromStringComparison); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1724 | #endif |
| 1725 | |
| 1726 | __ bind(&check_unequal_objects); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1727 | if (cc == equal && !strict()) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1728 | // Not strict equality. Objects are unequal if |
| 1729 | // they are both JSObjects and not undetectable, |
| 1730 | // and their pointers are different. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1731 | Label return_unequal; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1732 | // At most one is a smi, so we can test for smi by adding the two. |
| 1733 | // A smi plus a heap object has the low bit set, a heap object plus |
| 1734 | // a heap object has the low bit clear. |
| 1735 | STATIC_ASSERT(kSmiTag == 0); |
| 1736 | STATIC_ASSERT(kSmiTagMask == 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1737 | __ leap(rcx, Operand(rax, rdx, times_1, 0)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1738 | __ testb(rcx, Immediate(kSmiTagMask)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1739 | __ j(not_zero, &runtime_call, Label::kNear); |
| 1740 | __ CmpObjectType(rax, FIRST_JS_RECEIVER_TYPE, rbx); |
| 1741 | __ j(below, &runtime_call, Label::kNear); |
| 1742 | __ CmpObjectType(rdx, FIRST_JS_RECEIVER_TYPE, rcx); |
| 1743 | __ j(below, &runtime_call, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1744 | __ testb(FieldOperand(rbx, Map::kBitFieldOffset), |
| 1745 | Immediate(1 << Map::kIsUndetectable)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1746 | __ j(zero, &return_unequal, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1747 | __ testb(FieldOperand(rcx, Map::kBitFieldOffset), |
| 1748 | Immediate(1 << Map::kIsUndetectable)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1749 | __ j(zero, &return_unequal, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1750 | // The objects are both undetectable, so they both compare as the value |
| 1751 | // undefined, and are equal. |
| 1752 | __ Set(rax, EQUAL); |
| 1753 | __ bind(&return_unequal); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1754 | // Return non-equal by returning the non-zero object pointer in rax, |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1755 | // or return equal if we fell through to here. |
| 1756 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1757 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1758 | __ bind(&runtime_call); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1759 | |
| 1760 | // Push arguments below the return address to prepare jump to builtin. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1761 | __ PopReturnAddressTo(rcx); |
| 1762 | __ Push(rdx); |
| 1763 | __ Push(rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1764 | |
| 1765 | // Figure out which native to call and setup the arguments. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1766 | if (cc == equal) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1767 | __ PushReturnAddressFrom(rcx); |
| 1768 | __ TailCallRuntime(strict() ? Runtime::kStrictEquals : Runtime::kEquals); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1769 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1770 | __ Push(Smi::FromInt(NegativeComparisonResult(cc))); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1771 | __ PushReturnAddressFrom(rcx); |
| 1772 | __ TailCallRuntime(is_strong(strength()) ? Runtime::kCompare_Strong |
| 1773 | : Runtime::kCompare); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1774 | } |
| 1775 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1776 | __ bind(&miss); |
| 1777 | GenerateMiss(masm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1778 | } |
| 1779 | |
| 1780 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1781 | static void CallStubInRecordCallTarget(MacroAssembler* masm, CodeStub* stub) { |
| 1782 | // rax : number of arguments to the construct function |
| 1783 | // rbx : feedback vector |
| 1784 | // rdx : slot in feedback vector (Smi) |
| 1785 | // rdi : the function to call |
| 1786 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1787 | |
| 1788 | // Number-of-arguments register must be smi-tagged to call out. |
| 1789 | __ Integer32ToSmi(rax, rax); |
| 1790 | __ Push(rax); |
| 1791 | __ Push(rdi); |
| 1792 | __ Integer32ToSmi(rdx, rdx); |
| 1793 | __ Push(rdx); |
| 1794 | __ Push(rbx); |
| 1795 | |
| 1796 | __ CallStub(stub); |
| 1797 | |
| 1798 | __ Pop(rbx); |
| 1799 | __ Pop(rdx); |
| 1800 | __ Pop(rdi); |
| 1801 | __ Pop(rax); |
| 1802 | __ SmiToInteger32(rax, rax); |
| 1803 | } |
| 1804 | |
| 1805 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1806 | static void GenerateRecordCallTarget(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1807 | // Cache the called function in a feedback vector slot. Cache states |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1808 | // are uninitialized, monomorphic (indicated by a JSFunction), and |
| 1809 | // megamorphic. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1810 | // rax : number of arguments to the construct function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1811 | // rbx : feedback vector |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1812 | // rdx : slot in feedback vector (Smi) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1813 | // rdi : the function to call |
| 1814 | Isolate* isolate = masm->isolate(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1815 | Label initialize, done, miss, megamorphic, not_array_function, |
| 1816 | done_no_smi_convert; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1817 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1818 | // Load the cache state into r11. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1819 | __ SmiToInteger32(rdx, rdx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1820 | __ movp(r11, |
| 1821 | FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1822 | |
| 1823 | // A monomorphic cache hit or an already megamorphic state: invoke the |
| 1824 | // function without changing the state. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1825 | // We don't know if r11 is a WeakCell or a Symbol, but it's harmless to read |
| 1826 | // at this position in a symbol (see static asserts in |
| 1827 | // type-feedback-vector.h). |
| 1828 | Label check_allocation_site; |
| 1829 | __ cmpp(rdi, FieldOperand(r11, WeakCell::kValueOffset)); |
| 1830 | __ j(equal, &done, Label::kFar); |
| 1831 | __ CompareRoot(r11, Heap::kmegamorphic_symbolRootIndex); |
| 1832 | __ j(equal, &done, Label::kFar); |
| 1833 | __ CompareRoot(FieldOperand(r11, HeapObject::kMapOffset), |
| 1834 | Heap::kWeakCellMapRootIndex); |
| 1835 | __ j(not_equal, &check_allocation_site); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1836 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1837 | // If the weak cell is cleared, we have a new chance to become monomorphic. |
| 1838 | __ CheckSmi(FieldOperand(r11, WeakCell::kValueOffset)); |
| 1839 | __ j(equal, &initialize); |
| 1840 | __ jmp(&megamorphic); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1841 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1842 | __ bind(&check_allocation_site); |
| 1843 | // If we came here, we need to see if we are the array function. |
| 1844 | // If we didn't have a matching function, and we didn't find the megamorph |
| 1845 | // sentinel, then we have in the slot either some other function or an |
| 1846 | // AllocationSite. |
| 1847 | __ CompareRoot(FieldOperand(r11, 0), Heap::kAllocationSiteMapRootIndex); |
| 1848 | __ j(not_equal, &miss); |
| 1849 | |
| 1850 | // Make sure the function is the Array() function |
| 1851 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, r11); |
| 1852 | __ cmpp(rdi, r11); |
| 1853 | __ j(not_equal, &megamorphic); |
| 1854 | __ jmp(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1855 | |
| 1856 | __ bind(&miss); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1857 | |
| 1858 | // A monomorphic miss (i.e, here the cache is not uninitialized) goes |
| 1859 | // megamorphic. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1860 | __ CompareRoot(r11, Heap::kuninitialized_symbolRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1861 | __ j(equal, &initialize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1862 | // MegamorphicSentinel is an immortal immovable object (undefined) so no |
| 1863 | // write-barrier is needed. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1864 | __ bind(&megamorphic); |
| 1865 | __ Move(FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize), |
| 1866 | TypeFeedbackVector::MegamorphicSentinel(isolate)); |
| 1867 | __ jmp(&done); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1868 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1869 | // An uninitialized cache is patched with the function or sentinel to |
| 1870 | // indicate the ElementsKind if function is the Array constructor. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1871 | __ bind(&initialize); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1872 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1873 | // Make sure the function is the Array() function |
| 1874 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, r11); |
| 1875 | __ cmpp(rdi, r11); |
| 1876 | __ j(not_equal, ¬_array_function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1877 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1878 | CreateAllocationSiteStub create_stub(isolate); |
| 1879 | CallStubInRecordCallTarget(masm, &create_stub); |
| 1880 | __ jmp(&done_no_smi_convert); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1881 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1882 | __ bind(¬_array_function); |
| 1883 | CreateWeakCellStub weak_cell_stub(isolate); |
| 1884 | CallStubInRecordCallTarget(masm, &weak_cell_stub); |
| 1885 | __ jmp(&done_no_smi_convert); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1886 | |
| 1887 | __ bind(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1888 | __ Integer32ToSmi(rdx, rdx); |
| 1889 | |
| 1890 | __ bind(&done_no_smi_convert); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1891 | } |
| 1892 | |
| 1893 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1894 | void CallConstructStub::Generate(MacroAssembler* masm) { |
| 1895 | // rax : number of arguments |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1896 | // rbx : feedback vector |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1897 | // rdx : slot in feedback vector (Smi) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1898 | // rdi : constructor function |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1899 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1900 | Label non_function; |
| 1901 | // Check that the constructor is not a smi. |
| 1902 | __ JumpIfSmi(rdi, &non_function); |
| 1903 | // Check that constructor is a JSFunction. |
| 1904 | __ CmpObjectType(rdi, JS_FUNCTION_TYPE, r11); |
| 1905 | __ j(not_equal, &non_function); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1906 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1907 | GenerateRecordCallTarget(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1908 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1909 | __ SmiToInteger32(rdx, rdx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1910 | Label feedback_register_initialized; |
| 1911 | // Put the AllocationSite from the feedback vector into rbx, or undefined. |
| 1912 | __ movp(rbx, |
| 1913 | FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize)); |
| 1914 | __ CompareRoot(FieldOperand(rbx, 0), Heap::kAllocationSiteMapRootIndex); |
| 1915 | __ j(equal, &feedback_register_initialized, Label::kNear); |
| 1916 | __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex); |
| 1917 | __ bind(&feedback_register_initialized); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1918 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1919 | __ AssertUndefinedOrAllocationSite(rbx); |
| 1920 | |
| 1921 | // Pass new target to construct stub. |
| 1922 | __ movp(rdx, rdi); |
| 1923 | |
| 1924 | // Tail call to the function-specific construct stub (still in the caller |
| 1925 | // context at this point). |
| 1926 | __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 1927 | __ movp(rcx, FieldOperand(rcx, SharedFunctionInfo::kConstructStubOffset)); |
| 1928 | __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize)); |
| 1929 | __ jmp(rcx); |
| 1930 | |
| 1931 | __ bind(&non_function); |
| 1932 | __ movp(rdx, rdi); |
| 1933 | __ Jump(isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
| 1934 | } |
| 1935 | |
| 1936 | |
| 1937 | void CallICStub::HandleArrayCase(MacroAssembler* masm, Label* miss) { |
| 1938 | // rdi - function |
| 1939 | // rdx - slot id |
| 1940 | // rbx - vector |
| 1941 | // rcx - allocation site (loaded from vector[slot]). |
| 1942 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, r8); |
| 1943 | __ cmpp(rdi, r8); |
| 1944 | __ j(not_equal, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1945 | |
| 1946 | __ movp(rax, Immediate(arg_count())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1947 | |
| 1948 | // Increment the call count for monomorphic function calls. |
| 1949 | __ SmiAddConstant(FieldOperand(rbx, rdx, times_pointer_size, |
| 1950 | FixedArray::kHeaderSize + kPointerSize), |
| 1951 | Smi::FromInt(CallICNexus::kCallCountIncrement)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1952 | |
| 1953 | __ movp(rbx, rcx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1954 | __ movp(rdx, rdi); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1955 | ArrayConstructorStub stub(masm->isolate(), arg_count()); |
| 1956 | __ TailCallStub(&stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1957 | } |
| 1958 | |
| 1959 | |
| 1960 | void CallICStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1961 | // ----------- S t a t e ------------- |
| 1962 | // -- rdi - function |
| 1963 | // -- rdx - slot id |
| 1964 | // -- rbx - vector |
| 1965 | // ----------------------------------- |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1966 | Isolate* isolate = masm->isolate(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1967 | Label extra_checks_or_miss, call, call_function; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1968 | int argc = arg_count(); |
| 1969 | StackArgumentsAccessor args(rsp, argc); |
| 1970 | ParameterCount actual(argc); |
| 1971 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1972 | // The checks. First, does rdi match the recorded monomorphic target? |
| 1973 | __ SmiToInteger32(rdx, rdx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1974 | __ movp(rcx, |
| 1975 | FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize)); |
| 1976 | |
| 1977 | // We don't know that we have a weak cell. We might have a private symbol |
| 1978 | // or an AllocationSite, but the memory is safe to examine. |
| 1979 | // AllocationSite::kTransitionInfoOffset - contains a Smi or pointer to |
| 1980 | // FixedArray. |
| 1981 | // WeakCell::kValueOffset - contains a JSFunction or Smi(0) |
| 1982 | // Symbol::kHashFieldSlot - if the low bit is 1, then the hash is not |
| 1983 | // computed, meaning that it can't appear to be a pointer. If the low bit is |
| 1984 | // 0, then hash is computed, but the 0 bit prevents the field from appearing |
| 1985 | // to be a pointer. |
| 1986 | STATIC_ASSERT(WeakCell::kSize >= kPointerSize); |
| 1987 | STATIC_ASSERT(AllocationSite::kTransitionInfoOffset == |
| 1988 | WeakCell::kValueOffset && |
| 1989 | WeakCell::kValueOffset == Symbol::kHashFieldSlot); |
| 1990 | |
| 1991 | __ cmpp(rdi, FieldOperand(rcx, WeakCell::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1992 | __ j(not_equal, &extra_checks_or_miss); |
| 1993 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1994 | // The compare above could have been a SMI/SMI comparison. Guard against this |
| 1995 | // convincing us that we have a monomorphic JSFunction. |
| 1996 | __ JumpIfSmi(rdi, &extra_checks_or_miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1997 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1998 | // Increment the call count for monomorphic function calls. |
| 1999 | __ SmiAddConstant(FieldOperand(rbx, rdx, times_pointer_size, |
| 2000 | FixedArray::kHeaderSize + kPointerSize), |
| 2001 | Smi::FromInt(CallICNexus::kCallCountIncrement)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2002 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2003 | __ bind(&call_function); |
| 2004 | __ Set(rax, argc); |
| 2005 | __ Jump(masm->isolate()->builtins()->CallFunction(convert_mode()), |
| 2006 | RelocInfo::CODE_TARGET); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2007 | |
| 2008 | __ bind(&extra_checks_or_miss); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2009 | Label uninitialized, miss, not_allocation_site; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2010 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2011 | __ Cmp(rcx, TypeFeedbackVector::MegamorphicSentinel(isolate)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2012 | __ j(equal, &call); |
| 2013 | |
| 2014 | // Check if we have an allocation site. |
| 2015 | __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), |
| 2016 | Heap::kAllocationSiteMapRootIndex); |
| 2017 | __ j(not_equal, ¬_allocation_site); |
| 2018 | |
| 2019 | // We have an allocation site. |
| 2020 | HandleArrayCase(masm, &miss); |
| 2021 | |
| 2022 | __ bind(¬_allocation_site); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2023 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2024 | // The following cases attempt to handle MISS cases without going to the |
| 2025 | // runtime. |
| 2026 | if (FLAG_trace_ic) { |
| 2027 | __ jmp(&miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2028 | } |
| 2029 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2030 | __ Cmp(rcx, TypeFeedbackVector::UninitializedSentinel(isolate)); |
| 2031 | __ j(equal, &uninitialized); |
| 2032 | |
| 2033 | // We are going megamorphic. If the feedback is a JSFunction, it is fine |
| 2034 | // to handle it here. More complex cases are dealt with in the runtime. |
| 2035 | __ AssertNotSmi(rcx); |
| 2036 | __ CmpObjectType(rcx, JS_FUNCTION_TYPE, rcx); |
| 2037 | __ j(not_equal, &miss); |
| 2038 | __ Move(FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize), |
| 2039 | TypeFeedbackVector::MegamorphicSentinel(isolate)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2040 | |
| 2041 | __ bind(&call); |
| 2042 | __ Set(rax, argc); |
| 2043 | __ Jump(masm->isolate()->builtins()->Call(convert_mode()), |
| 2044 | RelocInfo::CODE_TARGET); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2045 | |
| 2046 | __ bind(&uninitialized); |
| 2047 | |
| 2048 | // We are going monomorphic, provided we actually have a JSFunction. |
| 2049 | __ JumpIfSmi(rdi, &miss); |
| 2050 | |
| 2051 | // Goto miss case if we do not have a function. |
| 2052 | __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); |
| 2053 | __ j(not_equal, &miss); |
| 2054 | |
| 2055 | // Make sure the function is not the Array() function, which requires special |
| 2056 | // behavior on MISS. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2057 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, rcx); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2058 | __ cmpp(rdi, rcx); |
| 2059 | __ j(equal, &miss); |
| 2060 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2061 | // Make sure the function belongs to the same native context. |
| 2062 | __ movp(rcx, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 2063 | __ movp(rcx, ContextOperand(rcx, Context::NATIVE_CONTEXT_INDEX)); |
| 2064 | __ cmpp(rcx, NativeContextOperand()); |
| 2065 | __ j(not_equal, &miss); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2066 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2067 | // Initialize the call counter. |
| 2068 | __ Move(FieldOperand(rbx, rdx, times_pointer_size, |
| 2069 | FixedArray::kHeaderSize + kPointerSize), |
| 2070 | Smi::FromInt(CallICNexus::kCallCountIncrement)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2071 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2072 | // Store the function. Use a stub since we need a frame for allocation. |
| 2073 | // rbx - vector |
| 2074 | // rdx - slot (needs to be in smi form) |
| 2075 | // rdi - function |
| 2076 | { |
| 2077 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 2078 | CreateWeakCellStub create_stub(isolate); |
| 2079 | |
| 2080 | __ Integer32ToSmi(rdx, rdx); |
| 2081 | __ Push(rdi); |
| 2082 | __ CallStub(&create_stub); |
| 2083 | __ Pop(rdi); |
| 2084 | } |
| 2085 | |
| 2086 | __ jmp(&call_function); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2087 | |
| 2088 | // We are here because tracing is on or we encountered a MISS case we can't |
| 2089 | // handle here. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2090 | __ bind(&miss); |
| 2091 | GenerateMiss(masm); |
| 2092 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2093 | __ jmp(&call); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2094 | |
| 2095 | // Unreachable |
| 2096 | __ int3(); |
| 2097 | } |
| 2098 | |
| 2099 | |
| 2100 | void CallICStub::GenerateMiss(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2101 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2102 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2103 | // Push the receiver and the function and feedback info. |
| 2104 | __ Push(rdi); |
| 2105 | __ Push(rbx); |
| 2106 | __ Integer32ToSmi(rdx, rdx); |
| 2107 | __ Push(rdx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2108 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2109 | // Call the entry. |
| 2110 | __ CallRuntime(Runtime::kCallIC_Miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2111 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2112 | // Move result to edi and exit the internal frame. |
| 2113 | __ movp(rdi, rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2114 | } |
| 2115 | |
| 2116 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2117 | bool CEntryStub::NeedsImmovableCode() { |
| 2118 | return false; |
| 2119 | } |
| 2120 | |
| 2121 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2122 | void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) { |
| 2123 | CEntryStub::GenerateAheadOfTime(isolate); |
| 2124 | StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(isolate); |
| 2125 | StubFailureTrampolineStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2126 | // It is important that the store buffer overflow stubs are generated first. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2127 | ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate); |
| 2128 | CreateAllocationSiteStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2129 | CreateWeakCellStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2130 | BinaryOpICStub::GenerateAheadOfTime(isolate); |
| 2131 | BinaryOpICWithAllocationSiteStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2132 | StoreFastElementStub::GenerateAheadOfTime(isolate); |
| 2133 | TypeofStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2134 | } |
| 2135 | |
| 2136 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2137 | void CodeStub::GenerateFPStubs(Isolate* isolate) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2138 | } |
| 2139 | |
| 2140 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2141 | void CEntryStub::GenerateAheadOfTime(Isolate* isolate) { |
| 2142 | CEntryStub stub(isolate, 1, kDontSaveFPRegs); |
| 2143 | stub.GetCode(); |
| 2144 | CEntryStub save_doubles(isolate, 1, kSaveFPRegs); |
| 2145 | save_doubles.GetCode(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2146 | } |
| 2147 | |
| 2148 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2149 | void CEntryStub::Generate(MacroAssembler* masm) { |
| 2150 | // rax: number of arguments including receiver |
| 2151 | // rbx: pointer to C function (C callee-saved) |
| 2152 | // rbp: frame pointer of calling JS frame (restored after C call) |
| 2153 | // rsp: stack pointer (restored after C call) |
| 2154 | // rsi: current context (restored) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2155 | // |
| 2156 | // If argv_in_register(): |
| 2157 | // r15: pointer to the first argument |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2158 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2159 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2160 | |
| 2161 | // Enter the exit frame that transitions from JavaScript to C++. |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 2162 | #ifdef _WIN64 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2163 | int arg_stack_space = (result_size() < 2 ? 2 : 4); |
| 2164 | #else // _WIN64 |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 2165 | int arg_stack_space = 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2166 | #endif // _WIN64 |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2167 | if (argv_in_register()) { |
| 2168 | DCHECK(!save_doubles()); |
| 2169 | __ EnterApiExitFrame(arg_stack_space); |
| 2170 | // Move argc into r14 (argv is already in r15). |
| 2171 | __ movp(r14, rax); |
| 2172 | } else { |
| 2173 | __ EnterExitFrame(arg_stack_space, save_doubles()); |
| 2174 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2175 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2176 | // rbx: pointer to builtin function (C callee-saved). |
| 2177 | // rbp: frame pointer of exit frame (restored after C call). |
| 2178 | // rsp: stack pointer (restored after C call). |
| 2179 | // r14: number of arguments including receiver (C callee-saved). |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2180 | // r15: argv pointer (C callee-saved). |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2181 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2182 | // Simple results returned in rax (both AMD64 and Win64 calling conventions). |
| 2183 | // Complex results must be written to address passed as first argument. |
| 2184 | // AMD64 calling convention: a struct of two pointers in rax+rdx |
| 2185 | |
| 2186 | // Check stack alignment. |
| 2187 | if (FLAG_debug_code) { |
| 2188 | __ CheckStackAlignment(); |
| 2189 | } |
| 2190 | |
| 2191 | // Call C function. |
| 2192 | #ifdef _WIN64 |
| 2193 | // Windows 64-bit ABI passes arguments in rcx, rdx, r8, r9. |
| 2194 | // Pass argv and argc as two parameters. The arguments object will |
| 2195 | // be created by stubs declared by DECLARE_RUNTIME_FUNCTION(). |
| 2196 | if (result_size() < 2) { |
| 2197 | // Pass a pointer to the Arguments object as the first argument. |
| 2198 | // Return result in single register (rax). |
| 2199 | __ movp(rcx, r14); // argc. |
| 2200 | __ movp(rdx, r15); // argv. |
| 2201 | __ Move(r8, ExternalReference::isolate_address(isolate())); |
| 2202 | } else { |
| 2203 | DCHECK_EQ(2, result_size()); |
| 2204 | // Pass a pointer to the result location as the first argument. |
| 2205 | __ leap(rcx, StackSpaceOperand(2)); |
| 2206 | // Pass a pointer to the Arguments object as the second argument. |
| 2207 | __ movp(rdx, r14); // argc. |
| 2208 | __ movp(r8, r15); // argv. |
| 2209 | __ Move(r9, ExternalReference::isolate_address(isolate())); |
| 2210 | } |
| 2211 | |
| 2212 | #else // _WIN64 |
| 2213 | // GCC passes arguments in rdi, rsi, rdx, rcx, r8, r9. |
| 2214 | __ movp(rdi, r14); // argc. |
| 2215 | __ movp(rsi, r15); // argv. |
| 2216 | __ Move(rdx, ExternalReference::isolate_address(isolate())); |
| 2217 | #endif // _WIN64 |
| 2218 | __ call(rbx); |
| 2219 | // Result is in rax - do not destroy this register! |
| 2220 | |
| 2221 | #ifdef _WIN64 |
| 2222 | // If return value is on the stack, pop it to registers. |
| 2223 | if (result_size() > 1) { |
| 2224 | DCHECK_EQ(2, result_size()); |
| 2225 | // Read result values stored on stack. Result is stored |
| 2226 | // above the four argument mirror slots and the two |
| 2227 | // Arguments object slots. |
| 2228 | __ movq(rax, Operand(rsp, 6 * kRegisterSize)); |
| 2229 | __ movq(rdx, Operand(rsp, 7 * kRegisterSize)); |
| 2230 | } |
| 2231 | #endif // _WIN64 |
| 2232 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2233 | // Check result for exception sentinel. |
| 2234 | Label exception_returned; |
| 2235 | __ CompareRoot(rax, Heap::kExceptionRootIndex); |
| 2236 | __ j(equal, &exception_returned); |
| 2237 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2238 | // Check that there is no pending exception, otherwise we |
| 2239 | // should have returned the exception sentinel. |
| 2240 | if (FLAG_debug_code) { |
| 2241 | Label okay; |
| 2242 | __ LoadRoot(r14, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2243 | ExternalReference pending_exception_address( |
| 2244 | Isolate::kPendingExceptionAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2245 | Operand pending_exception_operand = |
| 2246 | masm->ExternalOperand(pending_exception_address); |
| 2247 | __ cmpp(r14, pending_exception_operand); |
| 2248 | __ j(equal, &okay, Label::kNear); |
| 2249 | __ int3(); |
| 2250 | __ bind(&okay); |
| 2251 | } |
| 2252 | |
| 2253 | // Exit the JavaScript to C++ exit frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2254 | __ LeaveExitFrame(save_doubles(), !argv_in_register()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2255 | __ ret(0); |
| 2256 | |
| 2257 | // Handling of exception. |
| 2258 | __ bind(&exception_returned); |
| 2259 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2260 | ExternalReference pending_handler_context_address( |
| 2261 | Isolate::kPendingHandlerContextAddress, isolate()); |
| 2262 | ExternalReference pending_handler_code_address( |
| 2263 | Isolate::kPendingHandlerCodeAddress, isolate()); |
| 2264 | ExternalReference pending_handler_offset_address( |
| 2265 | Isolate::kPendingHandlerOffsetAddress, isolate()); |
| 2266 | ExternalReference pending_handler_fp_address( |
| 2267 | Isolate::kPendingHandlerFPAddress, isolate()); |
| 2268 | ExternalReference pending_handler_sp_address( |
| 2269 | Isolate::kPendingHandlerSPAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2270 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2271 | // Ask the runtime for help to determine the handler. This will set rax to |
| 2272 | // contain the current pending exception, don't clobber it. |
| 2273 | ExternalReference find_handler(Runtime::kUnwindAndFindExceptionHandler, |
| 2274 | isolate()); |
| 2275 | { |
| 2276 | FrameScope scope(masm, StackFrame::MANUAL); |
| 2277 | __ movp(arg_reg_1, Immediate(0)); // argc. |
| 2278 | __ movp(arg_reg_2, Immediate(0)); // argv. |
| 2279 | __ Move(arg_reg_3, ExternalReference::isolate_address(isolate())); |
| 2280 | __ PrepareCallCFunction(3); |
| 2281 | __ CallCFunction(find_handler, 3); |
| 2282 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2283 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2284 | // Retrieve the handler context, SP and FP. |
| 2285 | __ movp(rsi, masm->ExternalOperand(pending_handler_context_address)); |
| 2286 | __ movp(rsp, masm->ExternalOperand(pending_handler_sp_address)); |
| 2287 | __ movp(rbp, masm->ExternalOperand(pending_handler_fp_address)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2288 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2289 | // If the handler is a JS frame, restore the context to the frame. Note that |
| 2290 | // the context will be set to (rsi == 0) for non-JS frames. |
| 2291 | Label skip; |
| 2292 | __ testp(rsi, rsi); |
| 2293 | __ j(zero, &skip, Label::kNear); |
| 2294 | __ movp(Operand(rbp, StandardFrameConstants::kContextOffset), rsi); |
| 2295 | __ bind(&skip); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2296 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2297 | // Compute the handler entry address and jump to it. |
| 2298 | __ movp(rdi, masm->ExternalOperand(pending_handler_code_address)); |
| 2299 | __ movp(rdx, masm->ExternalOperand(pending_handler_offset_address)); |
| 2300 | __ leap(rdi, FieldOperand(rdi, rdx, times_1, Code::kHeaderSize)); |
| 2301 | __ jmp(rdi); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2302 | } |
| 2303 | |
| 2304 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2305 | void JSEntryStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2306 | Label invoke, handler_entry, exit; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2307 | Label not_outermost_js, not_outermost_js_2; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2308 | |
| 2309 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
| 2310 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2311 | { // NOLINT. Scope block confuses linter. |
| 2312 | MacroAssembler::NoRootArrayScope uninitialized_root_register(masm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2313 | // Set up frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2314 | __ pushq(rbp); |
| 2315 | __ movp(rbp, rsp); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2316 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2317 | // Push the stack frame type marker twice. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2318 | int marker = type(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2319 | // Scratch register is neither callee-save, nor an argument register on any |
| 2320 | // platform. It's free to use at this point. |
| 2321 | // Cannot use smi-register for loading yet. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2322 | __ Move(kScratchRegister, Smi::FromInt(marker), Assembler::RelocInfoNone()); |
| 2323 | __ Push(kScratchRegister); // context slot |
| 2324 | __ Push(kScratchRegister); // function slot |
| 2325 | // Save callee-saved registers (X64/X32/Win64 calling conventions). |
| 2326 | __ pushq(r12); |
| 2327 | __ pushq(r13); |
| 2328 | __ pushq(r14); |
| 2329 | __ pushq(r15); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2330 | #ifdef _WIN64 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2331 | __ pushq(rdi); // Only callee save in Win64 ABI, argument in AMD64 ABI. |
| 2332 | __ pushq(rsi); // Only callee save in Win64 ABI, argument in AMD64 ABI. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2333 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2334 | __ pushq(rbx); |
| 2335 | |
| 2336 | #ifdef _WIN64 |
| 2337 | // On Win64 XMM6-XMM15 are callee-save |
| 2338 | __ subp(rsp, Immediate(EntryFrameConstants::kXMMRegistersBlockSize)); |
| 2339 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 0), xmm6); |
| 2340 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 1), xmm7); |
| 2341 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 2), xmm8); |
| 2342 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 3), xmm9); |
| 2343 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 4), xmm10); |
| 2344 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 5), xmm11); |
| 2345 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 6), xmm12); |
| 2346 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 7), xmm13); |
| 2347 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 8), xmm14); |
| 2348 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 9), xmm15); |
| 2349 | #endif |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2350 | |
| 2351 | // Set up the roots and smi constant registers. |
| 2352 | // Needs to be done before any further smi loads. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2353 | __ InitializeRootRegister(); |
| 2354 | } |
| 2355 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2356 | // Save copies of the top frame descriptor on the stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2357 | ExternalReference c_entry_fp(Isolate::kCEntryFPAddress, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2358 | { |
| 2359 | Operand c_entry_fp_operand = masm->ExternalOperand(c_entry_fp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2360 | __ Push(c_entry_fp_operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2361 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2362 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2363 | // If this is the outermost JS call, set js_entry_sp value. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2364 | ExternalReference js_entry_sp(Isolate::kJSEntrySPAddress, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2365 | __ Load(rax, js_entry_sp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2366 | __ testp(rax, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2367 | __ j(not_zero, ¬_outermost_js); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 2368 | __ Push(Smi::FromInt(StackFrame::OUTERMOST_JSENTRY_FRAME)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2369 | __ movp(rax, rbp); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2370 | __ Store(js_entry_sp, rax); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 2371 | Label cont; |
| 2372 | __ jmp(&cont); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2373 | __ bind(¬_outermost_js); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 2374 | __ Push(Smi::FromInt(StackFrame::INNER_JSENTRY_FRAME)); |
| 2375 | __ bind(&cont); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2376 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2377 | // Jump to a faked try block that does the invoke, with a faked catch |
| 2378 | // block that sets the pending exception. |
| 2379 | __ jmp(&invoke); |
| 2380 | __ bind(&handler_entry); |
| 2381 | handler_offset_ = handler_entry.pos(); |
| 2382 | // Caught exception: Store result (exception) in the pending exception |
| 2383 | // field in the JSEnv and return a failure sentinel. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2384 | ExternalReference pending_exception(Isolate::kPendingExceptionAddress, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2385 | isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2386 | __ Store(pending_exception, rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2387 | __ LoadRoot(rax, Heap::kExceptionRootIndex); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2388 | __ jmp(&exit); |
| 2389 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2390 | // Invoke: Link this frame into the handler chain. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2391 | __ bind(&invoke); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2392 | __ PushStackHandler(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2393 | |
| 2394 | // Clear any pending exceptions. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2395 | __ LoadRoot(rax, Heap::kTheHoleValueRootIndex); |
| 2396 | __ Store(pending_exception, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2397 | |
| 2398 | // Fake a receiver (NULL). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2399 | __ Push(Immediate(0)); // receiver |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2400 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2401 | // Invoke the function by calling through JS entry trampoline builtin and |
| 2402 | // pop the faked function when we return. We load the address from an |
| 2403 | // external reference instead of inlining the call target address directly |
| 2404 | // in the code, because the builtin stubs may not have been generated yet |
| 2405 | // at the time this code is generated. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2406 | if (type() == StackFrame::ENTRY_CONSTRUCT) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2407 | ExternalReference construct_entry(Builtins::kJSConstructEntryTrampoline, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2408 | isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2409 | __ Load(rax, construct_entry); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2410 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2411 | ExternalReference entry(Builtins::kJSEntryTrampoline, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2412 | __ Load(rax, entry); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2413 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2414 | __ leap(kScratchRegister, FieldOperand(rax, Code::kHeaderSize)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2415 | __ call(kScratchRegister); |
| 2416 | |
| 2417 | // Unlink this frame from the handler chain. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2418 | __ PopStackHandler(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2419 | |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 2420 | __ bind(&exit); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 2421 | // Check if the current stack frame is marked as the outermost JS frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2422 | __ Pop(rbx); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 2423 | __ Cmp(rbx, Smi::FromInt(StackFrame::OUTERMOST_JSENTRY_FRAME)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2424 | __ j(not_equal, ¬_outermost_js_2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2425 | __ Move(kScratchRegister, js_entry_sp); |
| 2426 | __ movp(Operand(kScratchRegister, 0), Immediate(0)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2427 | __ bind(¬_outermost_js_2); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2428 | |
| 2429 | // Restore the top frame descriptor from the stack. |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 2430 | { Operand c_entry_fp_operand = masm->ExternalOperand(c_entry_fp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2431 | __ Pop(c_entry_fp_operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2432 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2433 | |
| 2434 | // Restore callee-saved registers (X64 conventions). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2435 | #ifdef _WIN64 |
| 2436 | // On Win64 XMM6-XMM15 are callee-save |
| 2437 | __ movdqu(xmm6, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 0)); |
| 2438 | __ movdqu(xmm7, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 1)); |
| 2439 | __ movdqu(xmm8, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 2)); |
| 2440 | __ movdqu(xmm9, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 3)); |
| 2441 | __ movdqu(xmm10, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 4)); |
| 2442 | __ movdqu(xmm11, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 5)); |
| 2443 | __ movdqu(xmm12, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 6)); |
| 2444 | __ movdqu(xmm13, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 7)); |
| 2445 | __ movdqu(xmm14, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 8)); |
| 2446 | __ movdqu(xmm15, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 9)); |
| 2447 | __ addp(rsp, Immediate(EntryFrameConstants::kXMMRegistersBlockSize)); |
| 2448 | #endif |
| 2449 | |
| 2450 | __ popq(rbx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2451 | #ifdef _WIN64 |
| 2452 | // Callee save on in Win64 ABI, arguments/volatile in AMD64 ABI. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2453 | __ popq(rsi); |
| 2454 | __ popq(rdi); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2455 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2456 | __ popq(r15); |
| 2457 | __ popq(r14); |
| 2458 | __ popq(r13); |
| 2459 | __ popq(r12); |
| 2460 | __ addp(rsp, Immediate(2 * kPointerSize)); // remove markers |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2461 | |
| 2462 | // Restore frame pointer and return. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2463 | __ popq(rbp); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2464 | __ ret(0); |
| 2465 | } |
| 2466 | |
| 2467 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2468 | void InstanceOfStub::Generate(MacroAssembler* masm) { |
| 2469 | Register const object = rdx; // Object (lhs). |
| 2470 | Register const function = rax; // Function (rhs). |
| 2471 | Register const object_map = rcx; // Map of {object}. |
| 2472 | Register const function_map = r8; // Map of {function}. |
| 2473 | Register const function_prototype = rdi; // Prototype of {function}. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2474 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2475 | DCHECK(object.is(InstanceOfDescriptor::LeftRegister())); |
| 2476 | DCHECK(function.is(InstanceOfDescriptor::RightRegister())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2477 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2478 | // Check if {object} is a smi. |
| 2479 | Label object_is_smi; |
| 2480 | __ JumpIfSmi(object, &object_is_smi, Label::kNear); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2481 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2482 | // Lookup the {function} and the {object} map in the global instanceof cache. |
| 2483 | // Note: This is safe because we clear the global instanceof cache whenever |
| 2484 | // we change the prototype of any object. |
| 2485 | Label fast_case, slow_case; |
| 2486 | __ movp(object_map, FieldOperand(object, HeapObject::kMapOffset)); |
| 2487 | __ CompareRoot(function, Heap::kInstanceofCacheFunctionRootIndex); |
| 2488 | __ j(not_equal, &fast_case, Label::kNear); |
| 2489 | __ CompareRoot(object_map, Heap::kInstanceofCacheMapRootIndex); |
| 2490 | __ j(not_equal, &fast_case, Label::kNear); |
| 2491 | __ LoadRoot(rax, Heap::kInstanceofCacheAnswerRootIndex); |
| 2492 | __ ret(0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2493 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2494 | // If {object} is a smi we can safely return false if {function} is a JS |
| 2495 | // function, otherwise we have to miss to the runtime and throw an exception. |
| 2496 | __ bind(&object_is_smi); |
| 2497 | __ JumpIfSmi(function, &slow_case); |
| 2498 | __ CmpObjectType(function, JS_FUNCTION_TYPE, function_map); |
| 2499 | __ j(not_equal, &slow_case); |
| 2500 | __ LoadRoot(rax, Heap::kFalseValueRootIndex); |
| 2501 | __ ret(0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2502 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2503 | // Fast-case: The {function} must be a valid JSFunction. |
| 2504 | __ bind(&fast_case); |
| 2505 | __ JumpIfSmi(function, &slow_case); |
| 2506 | __ CmpObjectType(function, JS_FUNCTION_TYPE, function_map); |
| 2507 | __ j(not_equal, &slow_case); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2508 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2509 | // Ensure that {function} has an instance prototype. |
| 2510 | __ testb(FieldOperand(function_map, Map::kBitFieldOffset), |
| 2511 | Immediate(1 << Map::kHasNonInstancePrototype)); |
| 2512 | __ j(not_zero, &slow_case); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2513 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2514 | // Get the "prototype" (or initial map) of the {function}. |
| 2515 | __ movp(function_prototype, |
| 2516 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 2517 | __ AssertNotSmi(function_prototype); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2518 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2519 | // Resolve the prototype if the {function} has an initial map. Afterwards the |
| 2520 | // {function_prototype} will be either the JSReceiver prototype object or the |
| 2521 | // hole value, which means that no instances of the {function} were created so |
| 2522 | // far and hence we should return false. |
| 2523 | Label function_prototype_valid; |
| 2524 | Register const function_prototype_map = kScratchRegister; |
| 2525 | __ CmpObjectType(function_prototype, MAP_TYPE, function_prototype_map); |
| 2526 | __ j(not_equal, &function_prototype_valid, Label::kNear); |
| 2527 | __ movp(function_prototype, |
| 2528 | FieldOperand(function_prototype, Map::kPrototypeOffset)); |
| 2529 | __ bind(&function_prototype_valid); |
| 2530 | __ AssertNotSmi(function_prototype); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2531 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2532 | // Update the global instanceof cache with the current {object} map and |
| 2533 | // {function}. The cached answer will be set when it is known below. |
| 2534 | __ StoreRoot(function, Heap::kInstanceofCacheFunctionRootIndex); |
| 2535 | __ StoreRoot(object_map, Heap::kInstanceofCacheMapRootIndex); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2536 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2537 | // Loop through the prototype chain looking for the {function} prototype. |
| 2538 | // Assume true, and change to false if not found. |
| 2539 | Label done, loop, fast_runtime_fallback; |
| 2540 | __ LoadRoot(rax, Heap::kTrueValueRootIndex); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2541 | __ bind(&loop); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2542 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2543 | __ testb(FieldOperand(object_map, Map::kBitFieldOffset), |
| 2544 | Immediate(1 << Map::kIsAccessCheckNeeded)); |
| 2545 | __ j(not_zero, &fast_runtime_fallback, Label::kNear); |
| 2546 | __ CmpInstanceType(object_map, JS_PROXY_TYPE); |
| 2547 | __ j(equal, &fast_runtime_fallback, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2548 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2549 | __ movp(object, FieldOperand(object_map, Map::kPrototypeOffset)); |
| 2550 | __ cmpp(object, function_prototype); |
| 2551 | __ j(equal, &done, Label::kNear); |
| 2552 | __ CompareRoot(object, Heap::kNullValueRootIndex); |
| 2553 | __ movp(object_map, FieldOperand(object, HeapObject::kMapOffset)); |
| 2554 | __ j(not_equal, &loop); |
| 2555 | __ LoadRoot(rax, Heap::kFalseValueRootIndex); |
| 2556 | __ bind(&done); |
| 2557 | __ StoreRoot(rax, Heap::kInstanceofCacheAnswerRootIndex); |
| 2558 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2559 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2560 | // Found Proxy or access check needed: Call the runtime. |
| 2561 | __ bind(&fast_runtime_fallback); |
| 2562 | __ PopReturnAddressTo(kScratchRegister); |
| 2563 | __ Push(object); |
| 2564 | __ Push(function_prototype); |
| 2565 | __ PushReturnAddressFrom(kScratchRegister); |
| 2566 | // Invalidate the instanceof cache. |
| 2567 | __ Move(rax, Smi::FromInt(0)); |
| 2568 | __ StoreRoot(rax, Heap::kInstanceofCacheFunctionRootIndex); |
| 2569 | __ TailCallRuntime(Runtime::kHasInPrototypeChain); |
| 2570 | |
| 2571 | // Slow-case: Call the %InstanceOf runtime function. |
| 2572 | __ bind(&slow_case); |
| 2573 | __ PopReturnAddressTo(kScratchRegister); |
| 2574 | __ Push(object); |
| 2575 | __ Push(function); |
| 2576 | __ PushReturnAddressFrom(kScratchRegister); |
| 2577 | __ TailCallRuntime(Runtime::kInstanceOf); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2578 | } |
| 2579 | |
| 2580 | |
| 2581 | // ------------------------------------------------------------------------- |
| 2582 | // StringCharCodeAtGenerator |
| 2583 | |
| 2584 | void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2585 | // If the receiver is a smi trigger the non-string case. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2586 | if (check_mode_ == RECEIVER_IS_UNKNOWN) { |
| 2587 | __ JumpIfSmi(object_, receiver_not_string_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2588 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2589 | // Fetch the instance type of the receiver into result register. |
| 2590 | __ movp(result_, FieldOperand(object_, HeapObject::kMapOffset)); |
| 2591 | __ movzxbl(result_, FieldOperand(result_, Map::kInstanceTypeOffset)); |
| 2592 | // If the receiver is not a string trigger the non-string case. |
| 2593 | __ testb(result_, Immediate(kIsNotStringMask)); |
| 2594 | __ j(not_zero, receiver_not_string_); |
| 2595 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2596 | |
| 2597 | // If the index is non-smi trigger the non-smi case. |
| 2598 | __ JumpIfNotSmi(index_, &index_not_smi_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2599 | __ bind(&got_smi_index_); |
| 2600 | |
| 2601 | // Check for index out of range. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2602 | __ SmiCompare(index_, FieldOperand(object_, String::kLengthOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2603 | __ j(above_equal, index_out_of_range_); |
| 2604 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2605 | __ SmiToInteger32(index_, index_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2606 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2607 | StringCharLoadGenerator::Generate( |
| 2608 | masm, object_, index_, result_, &call_runtime_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2609 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2610 | __ Integer32ToSmi(result_, result_); |
| 2611 | __ bind(&exit_); |
| 2612 | } |
| 2613 | |
| 2614 | |
| 2615 | void StringCharCodeAtGenerator::GenerateSlow( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2616 | MacroAssembler* masm, EmbedMode embed_mode, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2617 | const RuntimeCallHelper& call_helper) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2618 | __ Abort(kUnexpectedFallthroughToCharCodeAtSlowCase); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2619 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2620 | Factory* factory = masm->isolate()->factory(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2621 | // Index is not a smi. |
| 2622 | __ bind(&index_not_smi_); |
| 2623 | // If index is a heap number, try converting it to an integer. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2624 | __ CheckMap(index_, |
| 2625 | factory->heap_number_map(), |
| 2626 | index_not_number_, |
| 2627 | DONT_DO_SMI_CHECK); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2628 | call_helper.BeforeCall(masm); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2629 | if (embed_mode == PART_OF_IC_HANDLER) { |
| 2630 | __ Push(LoadWithVectorDescriptor::VectorRegister()); |
| 2631 | __ Push(LoadDescriptor::SlotRegister()); |
| 2632 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2633 | __ Push(object_); |
| 2634 | __ Push(index_); // Consumed by runtime conversion function. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2635 | if (index_flags_ == STRING_INDEX_IS_NUMBER) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2636 | __ CallRuntime(Runtime::kNumberToIntegerMapMinusZero); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2637 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2638 | DCHECK(index_flags_ == STRING_INDEX_IS_ARRAY_INDEX); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2639 | // NumberToSmi discards numbers that are not exact integers. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2640 | __ CallRuntime(Runtime::kNumberToSmi); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2641 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2642 | if (!index_.is(rax)) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2643 | // Save the conversion result before the pop instructions below |
| 2644 | // have a chance to overwrite it. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2645 | __ movp(index_, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2646 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2647 | __ Pop(object_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2648 | if (embed_mode == PART_OF_IC_HANDLER) { |
| 2649 | __ Pop(LoadDescriptor::SlotRegister()); |
| 2650 | __ Pop(LoadWithVectorDescriptor::VectorRegister()); |
| 2651 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2652 | // Reload the instance type. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2653 | __ movp(result_, FieldOperand(object_, HeapObject::kMapOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2654 | __ movzxbl(result_, FieldOperand(result_, Map::kInstanceTypeOffset)); |
| 2655 | call_helper.AfterCall(masm); |
| 2656 | // If index is still not a smi, it must be out of range. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2657 | __ JumpIfNotSmi(index_, index_out_of_range_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2658 | // Otherwise, return to the fast path. |
| 2659 | __ jmp(&got_smi_index_); |
| 2660 | |
| 2661 | // Call runtime. We get here when the receiver is a string and the |
| 2662 | // index is a number, but the code of getting the actual character |
| 2663 | // is too complex (e.g., when the string needs to be flattened). |
| 2664 | __ bind(&call_runtime_); |
| 2665 | call_helper.BeforeCall(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2666 | __ Push(object_); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2667 | __ Integer32ToSmi(index_, index_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2668 | __ Push(index_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2669 | __ CallRuntime(Runtime::kStringCharCodeAtRT); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2670 | if (!result_.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2671 | __ movp(result_, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2672 | } |
| 2673 | call_helper.AfterCall(masm); |
| 2674 | __ jmp(&exit_); |
| 2675 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2676 | __ Abort(kUnexpectedFallthroughFromCharCodeAtSlowCase); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2677 | } |
| 2678 | |
| 2679 | |
| 2680 | // ------------------------------------------------------------------------- |
| 2681 | // StringCharFromCodeGenerator |
| 2682 | |
| 2683 | void StringCharFromCodeGenerator::GenerateFast(MacroAssembler* masm) { |
| 2684 | // Fast case of Heap::LookupSingleCharacterStringFromCode. |
| 2685 | __ JumpIfNotSmi(code_, &slow_case_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2686 | __ SmiCompare(code_, Smi::FromInt(String::kMaxOneByteCharCode)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2687 | __ j(above, &slow_case_); |
| 2688 | |
| 2689 | __ LoadRoot(result_, Heap::kSingleCharacterStringCacheRootIndex); |
| 2690 | SmiIndex index = masm->SmiToIndex(kScratchRegister, code_, kPointerSizeLog2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2691 | __ movp(result_, FieldOperand(result_, index.reg, index.scale, |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2692 | FixedArray::kHeaderSize)); |
| 2693 | __ CompareRoot(result_, Heap::kUndefinedValueRootIndex); |
| 2694 | __ j(equal, &slow_case_); |
| 2695 | __ bind(&exit_); |
| 2696 | } |
| 2697 | |
| 2698 | |
| 2699 | void StringCharFromCodeGenerator::GenerateSlow( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2700 | MacroAssembler* masm, |
| 2701 | const RuntimeCallHelper& call_helper) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2702 | __ Abort(kUnexpectedFallthroughToCharFromCodeSlowCase); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2703 | |
| 2704 | __ bind(&slow_case_); |
| 2705 | call_helper.BeforeCall(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2706 | __ Push(code_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2707 | __ CallRuntime(Runtime::kStringCharFromCode); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2708 | if (!result_.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2709 | __ movp(result_, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2710 | } |
| 2711 | call_helper.AfterCall(masm); |
| 2712 | __ jmp(&exit_); |
| 2713 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2714 | __ Abort(kUnexpectedFallthroughFromCharFromCodeSlowCase); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2715 | } |
| 2716 | |
| 2717 | |
| 2718 | void StringHelper::GenerateCopyCharacters(MacroAssembler* masm, |
| 2719 | Register dest, |
| 2720 | Register src, |
| 2721 | Register count, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2722 | String::Encoding encoding) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2723 | // Nothing to do for zero characters. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2724 | Label done; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2725 | __ testl(count, count); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2726 | __ j(zero, &done, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2727 | |
| 2728 | // Make count the number of bytes to copy. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2729 | if (encoding == String::TWO_BYTE_ENCODING) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2730 | STATIC_ASSERT(2 == sizeof(uc16)); |
| 2731 | __ addl(count, count); |
| 2732 | } |
| 2733 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2734 | // Copy remaining characters. |
| 2735 | Label loop; |
| 2736 | __ bind(&loop); |
| 2737 | __ movb(kScratchRegister, Operand(src, 0)); |
| 2738 | __ movb(Operand(dest, 0), kScratchRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2739 | __ incp(src); |
| 2740 | __ incp(dest); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2741 | __ decl(count); |
| 2742 | __ j(not_zero, &loop); |
| 2743 | |
| 2744 | __ bind(&done); |
| 2745 | } |
| 2746 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2747 | |
| 2748 | void SubStringStub::Generate(MacroAssembler* masm) { |
| 2749 | Label runtime; |
| 2750 | |
| 2751 | // Stack frame on entry. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2752 | // rsp[0] : return address |
| 2753 | // rsp[8] : to |
| 2754 | // rsp[16] : from |
| 2755 | // rsp[24] : string |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2756 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2757 | enum SubStringStubArgumentIndices { |
| 2758 | STRING_ARGUMENT_INDEX, |
| 2759 | FROM_ARGUMENT_INDEX, |
| 2760 | TO_ARGUMENT_INDEX, |
| 2761 | SUB_STRING_ARGUMENT_COUNT |
| 2762 | }; |
| 2763 | |
| 2764 | StackArgumentsAccessor args(rsp, SUB_STRING_ARGUMENT_COUNT, |
| 2765 | ARGUMENTS_DONT_CONTAIN_RECEIVER); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2766 | |
| 2767 | // Make sure first argument is a string. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2768 | __ movp(rax, args.GetArgumentOperand(STRING_ARGUMENT_INDEX)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2769 | STATIC_ASSERT(kSmiTag == 0); |
| 2770 | __ testl(rax, Immediate(kSmiTagMask)); |
| 2771 | __ j(zero, &runtime); |
| 2772 | Condition is_string = masm->IsObjectStringType(rax, rbx, rbx); |
| 2773 | __ j(NegateCondition(is_string), &runtime); |
| 2774 | |
| 2775 | // rax: string |
| 2776 | // rbx: instance type |
| 2777 | // Calculate length of sub string using the smi values. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2778 | __ movp(rcx, args.GetArgumentOperand(TO_ARGUMENT_INDEX)); |
| 2779 | __ movp(rdx, args.GetArgumentOperand(FROM_ARGUMENT_INDEX)); |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 2780 | __ JumpUnlessBothNonNegativeSmi(rcx, rdx, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2781 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2782 | __ SmiSub(rcx, rcx, rdx); // Overflow doesn't happen. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2783 | __ cmpp(rcx, FieldOperand(rax, String::kLengthOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2784 | Label not_original_string; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2785 | // Shorter than original string's length: an actual substring. |
| 2786 | __ j(below, ¬_original_string, Label::kNear); |
| 2787 | // Longer than original string's length or negative: unsafe arguments. |
| 2788 | __ j(above, &runtime); |
| 2789 | // Return original string. |
| 2790 | Counters* counters = isolate()->counters(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2791 | __ IncrementCounter(counters->sub_string_native(), 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2792 | __ ret(SUB_STRING_ARGUMENT_COUNT * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2793 | __ bind(¬_original_string); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2794 | |
| 2795 | Label single_char; |
| 2796 | __ SmiCompare(rcx, Smi::FromInt(1)); |
| 2797 | __ j(equal, &single_char); |
| 2798 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2799 | __ SmiToInteger32(rcx, rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2800 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2801 | // rax: string |
| 2802 | // rbx: instance type |
| 2803 | // rcx: sub string length |
| 2804 | // rdx: from index (smi) |
| 2805 | // Deal with different string types: update the index if necessary |
| 2806 | // and put the underlying string into edi. |
| 2807 | Label underlying_unpacked, sliced_string, seq_or_external_string; |
| 2808 | // If the string is not indirect, it can only be sequential or external. |
| 2809 | STATIC_ASSERT(kIsIndirectStringMask == (kSlicedStringTag & kConsStringTag)); |
| 2810 | STATIC_ASSERT(kIsIndirectStringMask != 0); |
| 2811 | __ testb(rbx, Immediate(kIsIndirectStringMask)); |
| 2812 | __ j(zero, &seq_or_external_string, Label::kNear); |
| 2813 | |
| 2814 | __ testb(rbx, Immediate(kSlicedNotConsMask)); |
| 2815 | __ j(not_zero, &sliced_string, Label::kNear); |
| 2816 | // Cons string. Check whether it is flat, then fetch first part. |
| 2817 | // Flat cons strings have an empty second part. |
| 2818 | __ CompareRoot(FieldOperand(rax, ConsString::kSecondOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2819 | Heap::kempty_stringRootIndex); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2820 | __ j(not_equal, &runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2821 | __ movp(rdi, FieldOperand(rax, ConsString::kFirstOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2822 | // Update instance type. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2823 | __ movp(rbx, FieldOperand(rdi, HeapObject::kMapOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2824 | __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2825 | __ jmp(&underlying_unpacked, Label::kNear); |
| 2826 | |
| 2827 | __ bind(&sliced_string); |
| 2828 | // Sliced string. Fetch parent and correct start index by offset. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2829 | __ addp(rdx, FieldOperand(rax, SlicedString::kOffsetOffset)); |
| 2830 | __ movp(rdi, FieldOperand(rax, SlicedString::kParentOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2831 | // Update instance type. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2832 | __ movp(rbx, FieldOperand(rdi, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2833 | __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
| 2834 | __ jmp(&underlying_unpacked, Label::kNear); |
| 2835 | |
| 2836 | __ bind(&seq_or_external_string); |
| 2837 | // Sequential or external string. Just move string to the correct register. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2838 | __ movp(rdi, rax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2839 | |
| 2840 | __ bind(&underlying_unpacked); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2841 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2842 | if (FLAG_string_slices) { |
| 2843 | Label copy_routine; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2844 | // rdi: underlying subject string |
| 2845 | // rbx: instance type of underlying subject string |
| 2846 | // rdx: adjusted start index (smi) |
| 2847 | // rcx: length |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2848 | // If coming from the make_two_character_string path, the string |
| 2849 | // is too short to be sliced anyways. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2850 | __ cmpp(rcx, Immediate(SlicedString::kMinLength)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2851 | // Short slice. Copy instead of slicing. |
| 2852 | __ j(less, ©_routine); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2853 | // Allocate new sliced string. At this point we do not reload the instance |
| 2854 | // type including the string encoding because we simply rely on the info |
| 2855 | // provided by the original string. It does not matter if the original |
| 2856 | // string's encoding is wrong because we always have to recheck encoding of |
| 2857 | // the newly created string's parent anyways due to externalized strings. |
| 2858 | Label two_byte_slice, set_slice_header; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2859 | STATIC_ASSERT((kStringEncodingMask & kOneByteStringTag) != 0); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2860 | STATIC_ASSERT((kStringEncodingMask & kTwoByteStringTag) == 0); |
| 2861 | __ testb(rbx, Immediate(kStringEncodingMask)); |
| 2862 | __ j(zero, &two_byte_slice, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2863 | __ AllocateOneByteSlicedString(rax, rbx, r14, &runtime); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2864 | __ jmp(&set_slice_header, Label::kNear); |
| 2865 | __ bind(&two_byte_slice); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2866 | __ AllocateTwoByteSlicedString(rax, rbx, r14, &runtime); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2867 | __ bind(&set_slice_header); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2868 | __ Integer32ToSmi(rcx, rcx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2869 | __ movp(FieldOperand(rax, SlicedString::kLengthOffset), rcx); |
| 2870 | __ movp(FieldOperand(rax, SlicedString::kHashFieldOffset), |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2871 | Immediate(String::kEmptyHashField)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2872 | __ movp(FieldOperand(rax, SlicedString::kParentOffset), rdi); |
| 2873 | __ movp(FieldOperand(rax, SlicedString::kOffsetOffset), rdx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2874 | __ IncrementCounter(counters->sub_string_native(), 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2875 | __ ret(3 * kPointerSize); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2876 | |
| 2877 | __ bind(©_routine); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2878 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2879 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2880 | // rdi: underlying subject string |
| 2881 | // rbx: instance type of underlying subject string |
| 2882 | // rdx: adjusted start index (smi) |
| 2883 | // rcx: length |
| 2884 | // The subject string can only be external or sequential string of either |
| 2885 | // encoding at this point. |
| 2886 | Label two_byte_sequential, sequential_string; |
| 2887 | STATIC_ASSERT(kExternalStringTag != 0); |
| 2888 | STATIC_ASSERT(kSeqStringTag == 0); |
| 2889 | __ testb(rbx, Immediate(kExternalStringTag)); |
| 2890 | __ j(zero, &sequential_string); |
| 2891 | |
| 2892 | // Handle external string. |
| 2893 | // Rule out short external strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2894 | STATIC_ASSERT(kShortExternalStringTag != 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2895 | __ testb(rbx, Immediate(kShortExternalStringMask)); |
| 2896 | __ j(not_zero, &runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2897 | __ movp(rdi, FieldOperand(rdi, ExternalString::kResourceDataOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2898 | // Move the pointer so that offset-wise, it looks like a sequential string. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2899 | STATIC_ASSERT(SeqTwoByteString::kHeaderSize == SeqOneByteString::kHeaderSize); |
| 2900 | __ subp(rdi, Immediate(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2901 | |
| 2902 | __ bind(&sequential_string); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2903 | STATIC_ASSERT((kOneByteStringTag & kStringEncodingMask) != 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2904 | __ testb(rbx, Immediate(kStringEncodingMask)); |
| 2905 | __ j(zero, &two_byte_sequential); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2906 | |
| 2907 | // Allocate the result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2908 | __ AllocateOneByteString(rax, rcx, r11, r14, r15, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2909 | |
| 2910 | // rax: result string |
| 2911 | // rcx: result string length |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2912 | { // Locate character of sub string start. |
| 2913 | SmiIndex smi_as_index = masm->SmiToIndex(rdx, rdx, times_1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2914 | __ leap(r14, Operand(rdi, smi_as_index.reg, smi_as_index.scale, |
| 2915 | SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 2916 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2917 | // Locate first character of result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2918 | __ leap(rdi, FieldOperand(rax, SeqOneByteString::kHeaderSize)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2919 | |
| 2920 | // rax: result string |
| 2921 | // rcx: result length |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2922 | // r14: first character of result |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2923 | // rsi: character of sub string start |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2924 | StringHelper::GenerateCopyCharacters( |
| 2925 | masm, rdi, r14, rcx, String::ONE_BYTE_ENCODING); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2926 | __ IncrementCounter(counters->sub_string_native(), 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2927 | __ ret(SUB_STRING_ARGUMENT_COUNT * kPointerSize); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2928 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2929 | __ bind(&two_byte_sequential); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2930 | // Allocate the result. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2931 | __ AllocateTwoByteString(rax, rcx, r11, r14, r15, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2932 | |
| 2933 | // rax: result string |
| 2934 | // rcx: result string length |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2935 | { // Locate character of sub string start. |
| 2936 | SmiIndex smi_as_index = masm->SmiToIndex(rdx, rdx, times_2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2937 | __ leap(r14, Operand(rdi, smi_as_index.reg, smi_as_index.scale, |
| 2938 | SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 2939 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2940 | // Locate first character of result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2941 | __ leap(rdi, FieldOperand(rax, SeqTwoByteString::kHeaderSize)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2942 | |
| 2943 | // rax: result string |
| 2944 | // rcx: result length |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2945 | // rdi: first character of result |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2946 | // r14: character of sub string start |
| 2947 | StringHelper::GenerateCopyCharacters( |
| 2948 | masm, rdi, r14, rcx, String::TWO_BYTE_ENCODING); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2949 | __ IncrementCounter(counters->sub_string_native(), 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2950 | __ ret(SUB_STRING_ARGUMENT_COUNT * kPointerSize); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2951 | |
| 2952 | // Just jump to runtime to create the sub string. |
| 2953 | __ bind(&runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2954 | __ TailCallRuntime(Runtime::kSubString); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2955 | |
| 2956 | __ bind(&single_char); |
| 2957 | // rax: string |
| 2958 | // rbx: instance type |
| 2959 | // rcx: sub string length (smi) |
| 2960 | // rdx: from index (smi) |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2961 | StringCharAtGenerator generator(rax, rdx, rcx, rax, &runtime, &runtime, |
| 2962 | &runtime, STRING_INDEX_IS_NUMBER, |
| 2963 | RECEIVER_IS_STRING); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2964 | generator.GenerateFast(masm); |
| 2965 | __ ret(SUB_STRING_ARGUMENT_COUNT * kPointerSize); |
| 2966 | generator.SkipSlow(masm, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2967 | } |
| 2968 | |
| 2969 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2970 | void ToNumberStub::Generate(MacroAssembler* masm) { |
| 2971 | // The ToNumber stub takes one argument in rax. |
| 2972 | Label not_smi; |
| 2973 | __ JumpIfNotSmi(rax, ¬_smi, Label::kNear); |
| 2974 | __ Ret(); |
| 2975 | __ bind(¬_smi); |
| 2976 | |
| 2977 | Label not_heap_number; |
| 2978 | __ CompareRoot(FieldOperand(rax, HeapObject::kMapOffset), |
| 2979 | Heap::kHeapNumberMapRootIndex); |
| 2980 | __ j(not_equal, ¬_heap_number, Label::kNear); |
| 2981 | __ Ret(); |
| 2982 | __ bind(¬_heap_number); |
| 2983 | |
| 2984 | Label not_string, slow_string; |
| 2985 | __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdi); |
| 2986 | // rax: object |
| 2987 | // rdi: object map |
| 2988 | __ j(above_equal, ¬_string, Label::kNear); |
| 2989 | // Check if string has a cached array index. |
| 2990 | __ testl(FieldOperand(rax, String::kHashFieldOffset), |
| 2991 | Immediate(String::kContainsCachedArrayIndexMask)); |
| 2992 | __ j(not_zero, &slow_string, Label::kNear); |
| 2993 | __ movl(rax, FieldOperand(rax, String::kHashFieldOffset)); |
| 2994 | __ IndexFromHash(rax, rax); |
| 2995 | __ Ret(); |
| 2996 | __ bind(&slow_string); |
| 2997 | __ PopReturnAddressTo(rcx); // Pop return address. |
| 2998 | __ Push(rax); // Push argument. |
| 2999 | __ PushReturnAddressFrom(rcx); // Push return address. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3000 | __ TailCallRuntime(Runtime::kStringToNumber); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3001 | __ bind(¬_string); |
| 3002 | |
| 3003 | Label not_oddball; |
| 3004 | __ CmpInstanceType(rdi, ODDBALL_TYPE); |
| 3005 | __ j(not_equal, ¬_oddball, Label::kNear); |
| 3006 | __ movp(rax, FieldOperand(rax, Oddball::kToNumberOffset)); |
| 3007 | __ Ret(); |
| 3008 | __ bind(¬_oddball); |
| 3009 | |
| 3010 | __ PopReturnAddressTo(rcx); // Pop return address. |
| 3011 | __ Push(rax); // Push argument. |
| 3012 | __ PushReturnAddressFrom(rcx); // Push return address. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3013 | __ TailCallRuntime(Runtime::kToNumber); |
| 3014 | } |
| 3015 | |
| 3016 | |
| 3017 | void ToLengthStub::Generate(MacroAssembler* masm) { |
| 3018 | // The ToLength stub takes on argument in rax. |
| 3019 | Label not_smi, positive_smi; |
| 3020 | __ JumpIfNotSmi(rax, ¬_smi, Label::kNear); |
| 3021 | STATIC_ASSERT(kSmiTag == 0); |
| 3022 | __ testp(rax, rax); |
| 3023 | __ j(greater_equal, &positive_smi, Label::kNear); |
| 3024 | __ xorl(rax, rax); |
| 3025 | __ bind(&positive_smi); |
| 3026 | __ Ret(); |
| 3027 | __ bind(¬_smi); |
| 3028 | |
| 3029 | __ PopReturnAddressTo(rcx); // Pop return address. |
| 3030 | __ Push(rax); // Push argument. |
| 3031 | __ PushReturnAddressFrom(rcx); // Push return address. |
| 3032 | __ TailCallRuntime(Runtime::kToLength); |
| 3033 | } |
| 3034 | |
| 3035 | |
| 3036 | void ToStringStub::Generate(MacroAssembler* masm) { |
| 3037 | // The ToString stub takes one argument in rax. |
| 3038 | Label is_number; |
| 3039 | __ JumpIfSmi(rax, &is_number, Label::kNear); |
| 3040 | |
| 3041 | Label not_string; |
| 3042 | __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdi); |
| 3043 | // rax: receiver |
| 3044 | // rdi: receiver map |
| 3045 | __ j(above_equal, ¬_string, Label::kNear); |
| 3046 | __ Ret(); |
| 3047 | __ bind(¬_string); |
| 3048 | |
| 3049 | Label not_heap_number; |
| 3050 | __ CompareRoot(rdi, Heap::kHeapNumberMapRootIndex); |
| 3051 | __ j(not_equal, ¬_heap_number, Label::kNear); |
| 3052 | __ bind(&is_number); |
| 3053 | NumberToStringStub stub(isolate()); |
| 3054 | __ TailCallStub(&stub); |
| 3055 | __ bind(¬_heap_number); |
| 3056 | |
| 3057 | Label not_oddball; |
| 3058 | __ CmpInstanceType(rdi, ODDBALL_TYPE); |
| 3059 | __ j(not_equal, ¬_oddball, Label::kNear); |
| 3060 | __ movp(rax, FieldOperand(rax, Oddball::kToStringOffset)); |
| 3061 | __ Ret(); |
| 3062 | __ bind(¬_oddball); |
| 3063 | |
| 3064 | __ PopReturnAddressTo(rcx); // Pop return address. |
| 3065 | __ Push(rax); // Push argument. |
| 3066 | __ PushReturnAddressFrom(rcx); // Push return address. |
| 3067 | __ TailCallRuntime(Runtime::kToString); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3068 | } |
| 3069 | |
| 3070 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3071 | void StringHelper::GenerateFlatOneByteStringEquals(MacroAssembler* masm, |
| 3072 | Register left, |
| 3073 | Register right, |
| 3074 | Register scratch1, |
| 3075 | Register scratch2) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3076 | Register length = scratch1; |
| 3077 | |
| 3078 | // Compare lengths. |
| 3079 | Label check_zero_length; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3080 | __ movp(length, FieldOperand(left, String::kLengthOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3081 | __ SmiCompare(length, FieldOperand(right, String::kLengthOffset)); |
| 3082 | __ j(equal, &check_zero_length, Label::kNear); |
| 3083 | __ Move(rax, Smi::FromInt(NOT_EQUAL)); |
| 3084 | __ ret(0); |
| 3085 | |
| 3086 | // Check if the length is zero. |
| 3087 | Label compare_chars; |
| 3088 | __ bind(&check_zero_length); |
| 3089 | STATIC_ASSERT(kSmiTag == 0); |
| 3090 | __ SmiTest(length); |
| 3091 | __ j(not_zero, &compare_chars, Label::kNear); |
| 3092 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 3093 | __ ret(0); |
| 3094 | |
| 3095 | // Compare characters. |
| 3096 | __ bind(&compare_chars); |
| 3097 | Label strings_not_equal; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3098 | GenerateOneByteCharsCompareLoop(masm, left, right, length, scratch2, |
| 3099 | &strings_not_equal, Label::kNear); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3100 | |
| 3101 | // Characters are equal. |
| 3102 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 3103 | __ ret(0); |
| 3104 | |
| 3105 | // Characters are not equal. |
| 3106 | __ bind(&strings_not_equal); |
| 3107 | __ Move(rax, Smi::FromInt(NOT_EQUAL)); |
| 3108 | __ ret(0); |
| 3109 | } |
| 3110 | |
| 3111 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3112 | void StringHelper::GenerateCompareFlatOneByteStrings( |
| 3113 | MacroAssembler* masm, Register left, Register right, Register scratch1, |
| 3114 | Register scratch2, Register scratch3, Register scratch4) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3115 | // Ensure that you can always subtract a string length from a non-negative |
| 3116 | // number (e.g. another length). |
| 3117 | STATIC_ASSERT(String::kMaxLength < 0x7fffffff); |
| 3118 | |
| 3119 | // Find minimum length and length difference. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3120 | __ movp(scratch1, FieldOperand(left, String::kLengthOffset)); |
| 3121 | __ movp(scratch4, scratch1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3122 | __ SmiSub(scratch4, |
| 3123 | scratch4, |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 3124 | FieldOperand(right, String::kLengthOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3125 | // Register scratch4 now holds left.length - right.length. |
| 3126 | const Register length_difference = scratch4; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3127 | Label left_shorter; |
| 3128 | __ j(less, &left_shorter, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3129 | // The right string isn't longer that the left one. |
| 3130 | // Get the right string's length by subtracting the (non-negative) difference |
| 3131 | // from the left string's length. |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 3132 | __ SmiSub(scratch1, scratch1, length_difference); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3133 | __ bind(&left_shorter); |
| 3134 | // Register scratch1 now holds Min(left.length, right.length). |
| 3135 | const Register min_length = scratch1; |
| 3136 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3137 | Label compare_lengths; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3138 | // If min-length is zero, go directly to comparing lengths. |
| 3139 | __ SmiTest(min_length); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3140 | __ j(zero, &compare_lengths, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3141 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3142 | // Compare loop. |
| 3143 | Label result_not_equal; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3144 | GenerateOneByteCharsCompareLoop( |
| 3145 | masm, left, right, min_length, scratch2, &result_not_equal, |
| 3146 | // In debug-code mode, SmiTest below might push |
| 3147 | // the target label outside the near range. |
| 3148 | Label::kFar); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3149 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3150 | // Completed loop without finding different characters. |
| 3151 | // Compare lengths (precomputed). |
| 3152 | __ bind(&compare_lengths); |
| 3153 | __ SmiTest(length_difference); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3154 | Label length_not_equal; |
| 3155 | __ j(not_zero, &length_not_equal, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3156 | |
| 3157 | // Result is EQUAL. |
| 3158 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 3159 | __ ret(0); |
| 3160 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3161 | Label result_greater; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3162 | Label result_less; |
| 3163 | __ bind(&length_not_equal); |
| 3164 | __ j(greater, &result_greater, Label::kNear); |
| 3165 | __ jmp(&result_less, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3166 | __ bind(&result_not_equal); |
| 3167 | // Unequal comparison of left to right, either character or length. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3168 | __ j(above, &result_greater, Label::kNear); |
| 3169 | __ bind(&result_less); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3170 | |
| 3171 | // Result is LESS. |
| 3172 | __ Move(rax, Smi::FromInt(LESS)); |
| 3173 | __ ret(0); |
| 3174 | |
| 3175 | // Result is GREATER. |
| 3176 | __ bind(&result_greater); |
| 3177 | __ Move(rax, Smi::FromInt(GREATER)); |
| 3178 | __ ret(0); |
| 3179 | } |
| 3180 | |
| 3181 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3182 | void StringHelper::GenerateOneByteCharsCompareLoop( |
| 3183 | MacroAssembler* masm, Register left, Register right, Register length, |
| 3184 | Register scratch, Label* chars_not_equal, Label::Distance near_jump) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3185 | // Change index to run from -length to -1 by adding length to string |
| 3186 | // start. This means that loop ends when index reaches zero, which |
| 3187 | // doesn't need an additional compare. |
| 3188 | __ SmiToInteger32(length, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3189 | __ leap(left, |
| 3190 | FieldOperand(left, length, times_1, SeqOneByteString::kHeaderSize)); |
| 3191 | __ leap(right, |
| 3192 | FieldOperand(right, length, times_1, SeqOneByteString::kHeaderSize)); |
| 3193 | __ negq(length); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3194 | Register index = length; // index = -length; |
| 3195 | |
| 3196 | // Compare loop. |
| 3197 | Label loop; |
| 3198 | __ bind(&loop); |
| 3199 | __ movb(scratch, Operand(left, index, times_1, 0)); |
| 3200 | __ cmpb(scratch, Operand(right, index, times_1, 0)); |
| 3201 | __ j(not_equal, chars_not_equal, near_jump); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3202 | __ incq(index); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3203 | __ j(not_zero, &loop); |
| 3204 | } |
| 3205 | |
| 3206 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3207 | void StringCompareStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3208 | // ----------- S t a t e ------------- |
| 3209 | // -- rdx : left string |
| 3210 | // -- rax : right string |
| 3211 | // -- rsp[0] : return address |
| 3212 | // ----------------------------------- |
| 3213 | __ AssertString(rdx); |
| 3214 | __ AssertString(rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3215 | |
| 3216 | // Check for identity. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3217 | Label not_same; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3218 | __ cmpp(rdx, rax); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3219 | __ j(not_equal, ¬_same, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3220 | __ Move(rax, Smi::FromInt(EQUAL)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3221 | __ IncrementCounter(isolate()->counters()->string_compare_native(), 1); |
| 3222 | __ Ret(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3223 | |
| 3224 | __ bind(¬_same); |
| 3225 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3226 | // Check that both are sequential one-byte strings. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3227 | Label runtime; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3228 | __ JumpIfNotBothSequentialOneByteStrings(rdx, rax, rcx, rbx, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3229 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3230 | // Inline comparison of one-byte strings. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3231 | __ IncrementCounter(isolate()->counters()->string_compare_native(), 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3232 | StringHelper::GenerateCompareFlatOneByteStrings(masm, rdx, rax, rcx, rbx, rdi, |
| 3233 | r8); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3234 | |
| 3235 | // Call the runtime; it returns -1 (less), 0 (equal), or 1 (greater) |
| 3236 | // tagged as a small integer. |
| 3237 | __ bind(&runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3238 | __ PopReturnAddressTo(rcx); |
| 3239 | __ Push(rdx); |
| 3240 | __ Push(rax); |
| 3241 | __ PushReturnAddressFrom(rcx); |
| 3242 | __ TailCallRuntime(Runtime::kStringCompare); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 3243 | } |
| 3244 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3245 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3246 | void BinaryOpICWithAllocationSiteStub::Generate(MacroAssembler* masm) { |
| 3247 | // ----------- S t a t e ------------- |
| 3248 | // -- rdx : left |
| 3249 | // -- rax : right |
| 3250 | // -- rsp[0] : return address |
| 3251 | // ----------------------------------- |
| 3252 | |
| 3253 | // Load rcx with the allocation site. We stick an undefined dummy value here |
| 3254 | // and replace it with the real allocation site later when we instantiate this |
| 3255 | // stub in BinaryOpICWithAllocationSiteStub::GetCodeCopyFromTemplate(). |
| 3256 | __ Move(rcx, handle(isolate()->heap()->undefined_value())); |
| 3257 | |
| 3258 | // Make sure that we actually patched the allocation site. |
| 3259 | if (FLAG_debug_code) { |
| 3260 | __ testb(rcx, Immediate(kSmiTagMask)); |
| 3261 | __ Assert(not_equal, kExpectedAllocationSite); |
| 3262 | __ Cmp(FieldOperand(rcx, HeapObject::kMapOffset), |
| 3263 | isolate()->factory()->allocation_site_map()); |
| 3264 | __ Assert(equal, kExpectedAllocationSite); |
| 3265 | } |
| 3266 | |
| 3267 | // Tail call into the stub that handles binary operations with allocation |
| 3268 | // sites. |
| 3269 | BinaryOpWithAllocationSiteStub stub(isolate(), state()); |
| 3270 | __ TailCallStub(&stub); |
| 3271 | } |
| 3272 | |
| 3273 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3274 | void CompareICStub::GenerateBooleans(MacroAssembler* masm) { |
| 3275 | DCHECK_EQ(CompareICState::BOOLEAN, state()); |
| 3276 | Label miss; |
| 3277 | Label::Distance const miss_distance = |
| 3278 | masm->emit_debug_code() ? Label::kFar : Label::kNear; |
| 3279 | |
| 3280 | __ JumpIfSmi(rdx, &miss, miss_distance); |
| 3281 | __ movp(rcx, FieldOperand(rdx, HeapObject::kMapOffset)); |
| 3282 | __ JumpIfSmi(rax, &miss, miss_distance); |
| 3283 | __ movp(rbx, FieldOperand(rax, HeapObject::kMapOffset)); |
| 3284 | __ JumpIfNotRoot(rcx, Heap::kBooleanMapRootIndex, &miss, miss_distance); |
| 3285 | __ JumpIfNotRoot(rbx, Heap::kBooleanMapRootIndex, &miss, miss_distance); |
| 3286 | if (op() != Token::EQ_STRICT && is_strong(strength())) { |
| 3287 | __ TailCallRuntime(Runtime::kThrowStrongModeImplicitConversion); |
| 3288 | } else { |
| 3289 | if (!Token::IsEqualityOp(op())) { |
| 3290 | __ movp(rax, FieldOperand(rax, Oddball::kToNumberOffset)); |
| 3291 | __ AssertSmi(rax); |
| 3292 | __ movp(rdx, FieldOperand(rdx, Oddball::kToNumberOffset)); |
| 3293 | __ AssertSmi(rdx); |
| 3294 | __ pushq(rax); |
| 3295 | __ movq(rax, rdx); |
| 3296 | __ popq(rdx); |
| 3297 | } |
| 3298 | __ subp(rax, rdx); |
| 3299 | __ Ret(); |
| 3300 | } |
| 3301 | |
| 3302 | __ bind(&miss); |
| 3303 | GenerateMiss(masm); |
| 3304 | } |
| 3305 | |
| 3306 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3307 | void CompareICStub::GenerateSmis(MacroAssembler* masm) { |
| 3308 | DCHECK(state() == CompareICState::SMI); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3309 | Label miss; |
| 3310 | __ JumpIfNotBothSmi(rdx, rax, &miss, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3311 | |
| 3312 | if (GetCondition() == equal) { |
| 3313 | // For equality we do not care about the sign of the result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3314 | __ subp(rax, rdx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3315 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3316 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3317 | __ subp(rdx, rax); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3318 | __ j(no_overflow, &done, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3319 | // Correct sign of result in case of overflow. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3320 | __ notp(rdx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3321 | __ bind(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3322 | __ movp(rax, rdx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3323 | } |
| 3324 | __ ret(0); |
| 3325 | |
| 3326 | __ bind(&miss); |
| 3327 | GenerateMiss(masm); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3328 | } |
| 3329 | |
| 3330 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3331 | void CompareICStub::GenerateNumbers(MacroAssembler* masm) { |
| 3332 | DCHECK(state() == CompareICState::NUMBER); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3333 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3334 | Label generic_stub; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3335 | Label unordered, maybe_undefined1, maybe_undefined2; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3336 | Label miss; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3337 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3338 | if (left() == CompareICState::SMI) { |
| 3339 | __ JumpIfNotSmi(rdx, &miss); |
| 3340 | } |
| 3341 | if (right() == CompareICState::SMI) { |
| 3342 | __ JumpIfNotSmi(rax, &miss); |
| 3343 | } |
| 3344 | |
| 3345 | // Load left and right operand. |
| 3346 | Label done, left, left_smi, right_smi; |
| 3347 | __ JumpIfSmi(rax, &right_smi, Label::kNear); |
| 3348 | __ CompareMap(rax, isolate()->factory()->heap_number_map()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3349 | __ j(not_equal, &maybe_undefined1, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3350 | __ Movsd(xmm1, FieldOperand(rax, HeapNumber::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3351 | __ jmp(&left, Label::kNear); |
| 3352 | __ bind(&right_smi); |
| 3353 | __ SmiToInteger32(rcx, rax); // Can't clobber rax yet. |
| 3354 | __ Cvtlsi2sd(xmm1, rcx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3355 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3356 | __ bind(&left); |
| 3357 | __ JumpIfSmi(rdx, &left_smi, Label::kNear); |
| 3358 | __ CompareMap(rdx, isolate()->factory()->heap_number_map()); |
| 3359 | __ j(not_equal, &maybe_undefined2, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3360 | __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3361 | __ jmp(&done); |
| 3362 | __ bind(&left_smi); |
| 3363 | __ SmiToInteger32(rcx, rdx); // Can't clobber rdx yet. |
| 3364 | __ Cvtlsi2sd(xmm0, rcx); |
| 3365 | |
| 3366 | __ bind(&done); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3367 | // Compare operands |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3368 | __ Ucomisd(xmm0, xmm1); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3369 | |
| 3370 | // Don't base result on EFLAGS when a NaN is involved. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3371 | __ j(parity_even, &unordered, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3372 | |
| 3373 | // Return a result of -1, 0, or 1, based on EFLAGS. |
| 3374 | // Performing mov, because xor would destroy the flag register. |
| 3375 | __ movl(rax, Immediate(0)); |
| 3376 | __ movl(rcx, Immediate(0)); |
| 3377 | __ setcc(above, rax); // Add one to zero if carry clear and not equal. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3378 | __ sbbp(rax, rcx); // Subtract one if below (aka. carry set). |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3379 | __ ret(0); |
| 3380 | |
| 3381 | __ bind(&unordered); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3382 | __ bind(&generic_stub); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3383 | CompareICStub stub(isolate(), op(), strength(), CompareICState::GENERIC, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3384 | CompareICState::GENERIC, CompareICState::GENERIC); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3385 | __ jmp(stub.GetCode(), RelocInfo::CODE_TARGET); |
| 3386 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3387 | __ bind(&maybe_undefined1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3388 | if (Token::IsOrderedRelationalCompareOp(op())) { |
| 3389 | __ Cmp(rax, isolate()->factory()->undefined_value()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3390 | __ j(not_equal, &miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3391 | __ JumpIfSmi(rdx, &unordered); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3392 | __ CmpObjectType(rdx, HEAP_NUMBER_TYPE, rcx); |
| 3393 | __ j(not_equal, &maybe_undefined2, Label::kNear); |
| 3394 | __ jmp(&unordered); |
| 3395 | } |
| 3396 | |
| 3397 | __ bind(&maybe_undefined2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3398 | if (Token::IsOrderedRelationalCompareOp(op())) { |
| 3399 | __ Cmp(rdx, isolate()->factory()->undefined_value()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3400 | __ j(equal, &unordered); |
| 3401 | } |
| 3402 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3403 | __ bind(&miss); |
| 3404 | GenerateMiss(masm); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3405 | } |
| 3406 | |
| 3407 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3408 | void CompareICStub::GenerateInternalizedStrings(MacroAssembler* masm) { |
| 3409 | DCHECK(state() == CompareICState::INTERNALIZED_STRING); |
| 3410 | DCHECK(GetCondition() == equal); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3411 | |
| 3412 | // Registers containing left and right operands respectively. |
| 3413 | Register left = rdx; |
| 3414 | Register right = rax; |
| 3415 | Register tmp1 = rcx; |
| 3416 | Register tmp2 = rbx; |
| 3417 | |
| 3418 | // Check that both operands are heap objects. |
| 3419 | Label miss; |
| 3420 | Condition cond = masm->CheckEitherSmi(left, right, tmp1); |
| 3421 | __ j(cond, &miss, Label::kNear); |
| 3422 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3423 | // Check that both operands are internalized strings. |
| 3424 | __ movp(tmp1, FieldOperand(left, HeapObject::kMapOffset)); |
| 3425 | __ movp(tmp2, FieldOperand(right, HeapObject::kMapOffset)); |
| 3426 | __ movzxbp(tmp1, FieldOperand(tmp1, Map::kInstanceTypeOffset)); |
| 3427 | __ movzxbp(tmp2, FieldOperand(tmp2, Map::kInstanceTypeOffset)); |
| 3428 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 3429 | __ orp(tmp1, tmp2); |
| 3430 | __ testb(tmp1, Immediate(kIsNotStringMask | kIsNotInternalizedMask)); |
| 3431 | __ j(not_zero, &miss, Label::kNear); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3432 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3433 | // Internalized strings are compared by identity. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3434 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3435 | __ cmpp(left, right); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3436 | // Make sure rax is non-zero. At this point input operands are |
| 3437 | // guaranteed to be non-zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3438 | DCHECK(right.is(rax)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3439 | __ j(not_equal, &done, Label::kNear); |
| 3440 | STATIC_ASSERT(EQUAL == 0); |
| 3441 | STATIC_ASSERT(kSmiTag == 0); |
| 3442 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 3443 | __ bind(&done); |
| 3444 | __ ret(0); |
| 3445 | |
| 3446 | __ bind(&miss); |
| 3447 | GenerateMiss(masm); |
| 3448 | } |
| 3449 | |
| 3450 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3451 | void CompareICStub::GenerateUniqueNames(MacroAssembler* masm) { |
| 3452 | DCHECK(state() == CompareICState::UNIQUE_NAME); |
| 3453 | DCHECK(GetCondition() == equal); |
| 3454 | |
| 3455 | // Registers containing left and right operands respectively. |
| 3456 | Register left = rdx; |
| 3457 | Register right = rax; |
| 3458 | Register tmp1 = rcx; |
| 3459 | Register tmp2 = rbx; |
| 3460 | |
| 3461 | // Check that both operands are heap objects. |
| 3462 | Label miss; |
| 3463 | Condition cond = masm->CheckEitherSmi(left, right, tmp1); |
| 3464 | __ j(cond, &miss, Label::kNear); |
| 3465 | |
| 3466 | // Check that both operands are unique names. This leaves the instance |
| 3467 | // types loaded in tmp1 and tmp2. |
| 3468 | __ movp(tmp1, FieldOperand(left, HeapObject::kMapOffset)); |
| 3469 | __ movp(tmp2, FieldOperand(right, HeapObject::kMapOffset)); |
| 3470 | __ movzxbp(tmp1, FieldOperand(tmp1, Map::kInstanceTypeOffset)); |
| 3471 | __ movzxbp(tmp2, FieldOperand(tmp2, Map::kInstanceTypeOffset)); |
| 3472 | |
| 3473 | __ JumpIfNotUniqueNameInstanceType(tmp1, &miss, Label::kNear); |
| 3474 | __ JumpIfNotUniqueNameInstanceType(tmp2, &miss, Label::kNear); |
| 3475 | |
| 3476 | // Unique names are compared by identity. |
| 3477 | Label done; |
| 3478 | __ cmpp(left, right); |
| 3479 | // Make sure rax is non-zero. At this point input operands are |
| 3480 | // guaranteed to be non-zero. |
| 3481 | DCHECK(right.is(rax)); |
| 3482 | __ j(not_equal, &done, Label::kNear); |
| 3483 | STATIC_ASSERT(EQUAL == 0); |
| 3484 | STATIC_ASSERT(kSmiTag == 0); |
| 3485 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 3486 | __ bind(&done); |
| 3487 | __ ret(0); |
| 3488 | |
| 3489 | __ bind(&miss); |
| 3490 | GenerateMiss(masm); |
| 3491 | } |
| 3492 | |
| 3493 | |
| 3494 | void CompareICStub::GenerateStrings(MacroAssembler* masm) { |
| 3495 | DCHECK(state() == CompareICState::STRING); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3496 | Label miss; |
| 3497 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3498 | bool equality = Token::IsEqualityOp(op()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3499 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3500 | // Registers containing left and right operands respectively. |
| 3501 | Register left = rdx; |
| 3502 | Register right = rax; |
| 3503 | Register tmp1 = rcx; |
| 3504 | Register tmp2 = rbx; |
| 3505 | Register tmp3 = rdi; |
| 3506 | |
| 3507 | // Check that both operands are heap objects. |
| 3508 | Condition cond = masm->CheckEitherSmi(left, right, tmp1); |
| 3509 | __ j(cond, &miss); |
| 3510 | |
| 3511 | // Check that both operands are strings. This leaves the instance |
| 3512 | // types loaded in tmp1 and tmp2. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3513 | __ movp(tmp1, FieldOperand(left, HeapObject::kMapOffset)); |
| 3514 | __ movp(tmp2, FieldOperand(right, HeapObject::kMapOffset)); |
| 3515 | __ movzxbp(tmp1, FieldOperand(tmp1, Map::kInstanceTypeOffset)); |
| 3516 | __ movzxbp(tmp2, FieldOperand(tmp2, Map::kInstanceTypeOffset)); |
| 3517 | __ movp(tmp3, tmp1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3518 | STATIC_ASSERT(kNotStringTag != 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3519 | __ orp(tmp3, tmp2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3520 | __ testb(tmp3, Immediate(kIsNotStringMask)); |
| 3521 | __ j(not_zero, &miss); |
| 3522 | |
| 3523 | // Fast check for identical strings. |
| 3524 | Label not_same; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3525 | __ cmpp(left, right); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3526 | __ j(not_equal, ¬_same, Label::kNear); |
| 3527 | STATIC_ASSERT(EQUAL == 0); |
| 3528 | STATIC_ASSERT(kSmiTag == 0); |
| 3529 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 3530 | __ ret(0); |
| 3531 | |
| 3532 | // Handle not identical strings. |
| 3533 | __ bind(¬_same); |
| 3534 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3535 | // Check that both strings are internalized strings. If they are, we're done |
| 3536 | // because we already know they are not identical. We also know they are both |
| 3537 | // strings. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3538 | if (equality) { |
| 3539 | Label do_compare; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3540 | STATIC_ASSERT(kInternalizedTag == 0); |
| 3541 | __ orp(tmp1, tmp2); |
| 3542 | __ testb(tmp1, Immediate(kIsNotInternalizedMask)); |
| 3543 | __ j(not_zero, &do_compare, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3544 | // Make sure rax is non-zero. At this point input operands are |
| 3545 | // guaranteed to be non-zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3546 | DCHECK(right.is(rax)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3547 | __ ret(0); |
| 3548 | __ bind(&do_compare); |
| 3549 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3550 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3551 | // Check that both strings are sequential one-byte. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3552 | Label runtime; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3553 | __ JumpIfNotBothSequentialOneByteStrings(left, right, tmp1, tmp2, &runtime); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3554 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3555 | // Compare flat one-byte strings. Returns when done. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3556 | if (equality) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3557 | StringHelper::GenerateFlatOneByteStringEquals(masm, left, right, tmp1, |
| 3558 | tmp2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3559 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3560 | StringHelper::GenerateCompareFlatOneByteStrings( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3561 | masm, left, right, tmp1, tmp2, tmp3, kScratchRegister); |
| 3562 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3563 | |
| 3564 | // Handle more complex cases in runtime. |
| 3565 | __ bind(&runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3566 | __ PopReturnAddressTo(tmp1); |
| 3567 | __ Push(left); |
| 3568 | __ Push(right); |
| 3569 | __ PushReturnAddressFrom(tmp1); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3570 | if (equality) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3571 | __ TailCallRuntime(Runtime::kStringEquals); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3572 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3573 | __ TailCallRuntime(Runtime::kStringCompare); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3574 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3575 | |
| 3576 | __ bind(&miss); |
| 3577 | GenerateMiss(masm); |
| 3578 | } |
| 3579 | |
| 3580 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3581 | void CompareICStub::GenerateReceivers(MacroAssembler* masm) { |
| 3582 | DCHECK_EQ(CompareICState::RECEIVER, state()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3583 | Label miss; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3584 | Condition either_smi = masm->CheckEitherSmi(rdx, rax); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3585 | __ j(either_smi, &miss, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3586 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3587 | STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE); |
| 3588 | __ CmpObjectType(rax, FIRST_JS_RECEIVER_TYPE, rcx); |
| 3589 | __ j(below, &miss, Label::kNear); |
| 3590 | __ CmpObjectType(rdx, FIRST_JS_RECEIVER_TYPE, rcx); |
| 3591 | __ j(below, &miss, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3592 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3593 | DCHECK_EQ(equal, GetCondition()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3594 | __ subp(rax, rdx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3595 | __ ret(0); |
| 3596 | |
| 3597 | __ bind(&miss); |
| 3598 | GenerateMiss(masm); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3599 | } |
| 3600 | |
| 3601 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3602 | void CompareICStub::GenerateKnownReceivers(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3603 | Label miss; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3604 | Handle<WeakCell> cell = Map::WeakCellForMap(known_map_); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3605 | Condition either_smi = masm->CheckEitherSmi(rdx, rax); |
| 3606 | __ j(either_smi, &miss, Label::kNear); |
| 3607 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3608 | __ GetWeakValue(rdi, cell); |
| 3609 | __ cmpp(FieldOperand(rdx, HeapObject::kMapOffset), rdi); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3610 | __ j(not_equal, &miss, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3611 | __ cmpp(FieldOperand(rax, HeapObject::kMapOffset), rdi); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3612 | __ j(not_equal, &miss, Label::kNear); |
| 3613 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3614 | if (Token::IsEqualityOp(op())) { |
| 3615 | __ subp(rax, rdx); |
| 3616 | __ ret(0); |
| 3617 | } else if (is_strong(strength())) { |
| 3618 | __ TailCallRuntime(Runtime::kThrowStrongModeImplicitConversion); |
| 3619 | } else { |
| 3620 | __ PopReturnAddressTo(rcx); |
| 3621 | __ Push(rdx); |
| 3622 | __ Push(rax); |
| 3623 | __ Push(Smi::FromInt(NegativeComparisonResult(GetCondition()))); |
| 3624 | __ PushReturnAddressFrom(rcx); |
| 3625 | __ TailCallRuntime(Runtime::kCompare); |
| 3626 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3627 | |
| 3628 | __ bind(&miss); |
| 3629 | GenerateMiss(masm); |
| 3630 | } |
| 3631 | |
| 3632 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3633 | void CompareICStub::GenerateMiss(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3634 | { |
| 3635 | // Call the runtime system in a fresh internal frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3636 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3637 | __ Push(rdx); |
| 3638 | __ Push(rax); |
| 3639 | __ Push(rdx); |
| 3640 | __ Push(rax); |
| 3641 | __ Push(Smi::FromInt(op())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3642 | __ CallRuntime(Runtime::kCompareIC_Miss); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 3643 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3644 | // Compute the entry point of the rewritten stub. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3645 | __ leap(rdi, FieldOperand(rax, Code::kHeaderSize)); |
| 3646 | __ Pop(rax); |
| 3647 | __ Pop(rdx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3648 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3649 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3650 | // Do a tail call to the rewritten stub. |
| 3651 | __ jmp(rdi); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3652 | } |
| 3653 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3654 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3655 | void NameDictionaryLookupStub::GenerateNegativeLookup(MacroAssembler* masm, |
| 3656 | Label* miss, |
| 3657 | Label* done, |
| 3658 | Register properties, |
| 3659 | Handle<Name> name, |
| 3660 | Register r0) { |
| 3661 | DCHECK(name->IsUniqueName()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3662 | // If names of slots in range from 1 to kProbes - 1 for the hash value are |
| 3663 | // not equal to the name and kProbes-th slot is not used (its name is the |
| 3664 | // undefined value), it guarantees the hash table doesn't contain the |
| 3665 | // property. It's true even if some slots represent deleted properties |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3666 | // (their names are the hole value). |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3667 | for (int i = 0; i < kInlinedProbes; i++) { |
| 3668 | // r0 points to properties hash. |
| 3669 | // Compute the masked index: (hash + i + i * i) & mask. |
| 3670 | Register index = r0; |
| 3671 | // Capacity is smi 2^n. |
| 3672 | __ SmiToInteger32(index, FieldOperand(properties, kCapacityOffset)); |
| 3673 | __ decl(index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3674 | __ andp(index, |
| 3675 | Immediate(name->Hash() + NameDictionary::GetProbeOffset(i))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3676 | |
| 3677 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3678 | STATIC_ASSERT(NameDictionary::kEntrySize == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3679 | __ leap(index, Operand(index, index, times_2, 0)); // index *= 3. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3680 | |
| 3681 | Register entity_name = r0; |
| 3682 | // Having undefined at this place means the name is not contained. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3683 | STATIC_ASSERT(kSmiTagSize == 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3684 | __ movp(entity_name, Operand(properties, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3685 | index, |
| 3686 | times_pointer_size, |
| 3687 | kElementsStartOffset - kHeapObjectTag)); |
| 3688 | __ Cmp(entity_name, masm->isolate()->factory()->undefined_value()); |
| 3689 | __ j(equal, done); |
| 3690 | |
| 3691 | // Stop if found the property. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3692 | __ Cmp(entity_name, Handle<Name>(name)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3693 | __ j(equal, miss); |
| 3694 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3695 | Label good; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3696 | // Check for the hole and skip. |
| 3697 | __ CompareRoot(entity_name, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3698 | __ j(equal, &good, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3699 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3700 | // Check if the entry name is not a unique name. |
| 3701 | __ movp(entity_name, FieldOperand(entity_name, HeapObject::kMapOffset)); |
| 3702 | __ JumpIfNotUniqueNameInstanceType( |
| 3703 | FieldOperand(entity_name, Map::kInstanceTypeOffset), miss); |
| 3704 | __ bind(&good); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3705 | } |
| 3706 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3707 | NameDictionaryLookupStub stub(masm->isolate(), properties, r0, r0, |
| 3708 | NEGATIVE_LOOKUP); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3709 | __ Push(Handle<Object>(name)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3710 | __ Push(Immediate(name->Hash())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3711 | __ CallStub(&stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3712 | __ testp(r0, r0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3713 | __ j(not_zero, miss); |
| 3714 | __ jmp(done); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3715 | } |
| 3716 | |
| 3717 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3718 | // Probe the name dictionary in the |elements| register. Jump to the |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3719 | // |done| label if a property with the given name is found leaving the |
| 3720 | // index into the dictionary in |r1|. Jump to the |miss| label |
| 3721 | // otherwise. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3722 | void NameDictionaryLookupStub::GeneratePositiveLookup(MacroAssembler* masm, |
| 3723 | Label* miss, |
| 3724 | Label* done, |
| 3725 | Register elements, |
| 3726 | Register name, |
| 3727 | Register r0, |
| 3728 | Register r1) { |
| 3729 | DCHECK(!elements.is(r0)); |
| 3730 | DCHECK(!elements.is(r1)); |
| 3731 | DCHECK(!name.is(r0)); |
| 3732 | DCHECK(!name.is(r1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3733 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3734 | __ AssertName(name); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3735 | |
| 3736 | __ SmiToInteger32(r0, FieldOperand(elements, kCapacityOffset)); |
| 3737 | __ decl(r0); |
| 3738 | |
| 3739 | for (int i = 0; i < kInlinedProbes; i++) { |
| 3740 | // Compute the masked index: (hash + i + i * i) & mask. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3741 | __ movl(r1, FieldOperand(name, Name::kHashFieldOffset)); |
| 3742 | __ shrl(r1, Immediate(Name::kHashShift)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3743 | if (i > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3744 | __ addl(r1, Immediate(NameDictionary::GetProbeOffset(i))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3745 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3746 | __ andp(r1, r0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3747 | |
| 3748 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3749 | STATIC_ASSERT(NameDictionary::kEntrySize == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3750 | __ leap(r1, Operand(r1, r1, times_2, 0)); // r1 = r1 * 3 |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3751 | |
| 3752 | // Check if the key is identical to the name. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3753 | __ cmpp(name, Operand(elements, r1, times_pointer_size, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3754 | kElementsStartOffset - kHeapObjectTag)); |
| 3755 | __ j(equal, done); |
| 3756 | } |
| 3757 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3758 | NameDictionaryLookupStub stub(masm->isolate(), elements, r0, r1, |
| 3759 | POSITIVE_LOOKUP); |
| 3760 | __ Push(name); |
| 3761 | __ movl(r0, FieldOperand(name, Name::kHashFieldOffset)); |
| 3762 | __ shrl(r0, Immediate(Name::kHashShift)); |
| 3763 | __ Push(r0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3764 | __ CallStub(&stub); |
| 3765 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3766 | __ testp(r0, r0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3767 | __ j(zero, miss); |
| 3768 | __ jmp(done); |
| 3769 | } |
| 3770 | |
| 3771 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3772 | void NameDictionaryLookupStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3773 | // This stub overrides SometimesSetsUpAFrame() to return false. That means |
| 3774 | // we cannot call anything that could cause a GC from this stub. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3775 | // Stack frame on entry: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3776 | // rsp[0 * kPointerSize] : return address. |
| 3777 | // rsp[1 * kPointerSize] : key's hash. |
| 3778 | // rsp[2 * kPointerSize] : key. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3779 | // Registers: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3780 | // dictionary_: NameDictionary to probe. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3781 | // result_: used as scratch. |
| 3782 | // index_: will hold an index of entry if lookup is successful. |
| 3783 | // might alias with result_. |
| 3784 | // Returns: |
| 3785 | // result_ is zero if lookup failed, non zero otherwise. |
| 3786 | |
| 3787 | Label in_dictionary, maybe_in_dictionary, not_in_dictionary; |
| 3788 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3789 | Register scratch = result(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3790 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3791 | __ SmiToInteger32(scratch, FieldOperand(dictionary(), kCapacityOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3792 | __ decl(scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3793 | __ Push(scratch); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3794 | |
| 3795 | // If names of slots in range from 1 to kProbes - 1 for the hash value are |
| 3796 | // not equal to the name and kProbes-th slot is not used (its name is the |
| 3797 | // undefined value), it guarantees the hash table doesn't contain the |
| 3798 | // property. It's true even if some slots represent deleted properties |
| 3799 | // (their names are the null value). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3800 | StackArgumentsAccessor args(rsp, 2, ARGUMENTS_DONT_CONTAIN_RECEIVER, |
| 3801 | kPointerSize); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3802 | for (int i = kInlinedProbes; i < kTotalProbes; i++) { |
| 3803 | // Compute the masked index: (hash + i + i * i) & mask. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3804 | __ movp(scratch, args.GetArgumentOperand(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3805 | if (i > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3806 | __ addl(scratch, Immediate(NameDictionary::GetProbeOffset(i))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3807 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3808 | __ andp(scratch, Operand(rsp, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3809 | |
| 3810 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 3811 | STATIC_ASSERT(NameDictionary::kEntrySize == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3812 | __ leap(index(), Operand(scratch, scratch, times_2, 0)); // index *= 3. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3813 | |
| 3814 | // Having undefined at this place means the name is not contained. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3815 | __ movp(scratch, Operand(dictionary(), index(), times_pointer_size, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3816 | kElementsStartOffset - kHeapObjectTag)); |
| 3817 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3818 | __ Cmp(scratch, isolate()->factory()->undefined_value()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3819 | __ j(equal, ¬_in_dictionary); |
| 3820 | |
| 3821 | // Stop if found the property. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3822 | __ cmpp(scratch, args.GetArgumentOperand(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3823 | __ j(equal, &in_dictionary); |
| 3824 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3825 | if (i != kTotalProbes - 1 && mode() == NEGATIVE_LOOKUP) { |
| 3826 | // If we hit a key that is not a unique name during negative |
| 3827 | // lookup we have to bailout as this key might be equal to the |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3828 | // key we are looking for. |
| 3829 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3830 | // Check if the entry name is not a unique name. |
| 3831 | __ movp(scratch, FieldOperand(scratch, HeapObject::kMapOffset)); |
| 3832 | __ JumpIfNotUniqueNameInstanceType( |
| 3833 | FieldOperand(scratch, Map::kInstanceTypeOffset), |
| 3834 | &maybe_in_dictionary); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3835 | } |
| 3836 | } |
| 3837 | |
| 3838 | __ bind(&maybe_in_dictionary); |
| 3839 | // If we are doing negative lookup then probing failure should be |
| 3840 | // treated as a lookup success. For positive lookup probing failure |
| 3841 | // should be treated as lookup failure. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3842 | if (mode() == POSITIVE_LOOKUP) { |
| 3843 | __ movp(scratch, Immediate(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3844 | __ Drop(1); |
| 3845 | __ ret(2 * kPointerSize); |
| 3846 | } |
| 3847 | |
| 3848 | __ bind(&in_dictionary); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3849 | __ movp(scratch, Immediate(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3850 | __ Drop(1); |
| 3851 | __ ret(2 * kPointerSize); |
| 3852 | |
| 3853 | __ bind(¬_in_dictionary); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3854 | __ movp(scratch, Immediate(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3855 | __ Drop(1); |
| 3856 | __ ret(2 * kPointerSize); |
| 3857 | } |
| 3858 | |
| 3859 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3860 | void StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime( |
| 3861 | Isolate* isolate) { |
| 3862 | StoreBufferOverflowStub stub1(isolate, kDontSaveFPRegs); |
| 3863 | stub1.GetCode(); |
| 3864 | StoreBufferOverflowStub stub2(isolate, kSaveFPRegs); |
| 3865 | stub2.GetCode(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3866 | } |
| 3867 | |
| 3868 | |
| 3869 | // Takes the input in 3 registers: address_ value_ and object_. A pointer to |
| 3870 | // the value has just been written into the object, now this stub makes sure |
| 3871 | // we keep the GC informed. The word in the object where the value has been |
| 3872 | // written is in the address register. |
| 3873 | void RecordWriteStub::Generate(MacroAssembler* masm) { |
| 3874 | Label skip_to_incremental_noncompacting; |
| 3875 | Label skip_to_incremental_compacting; |
| 3876 | |
| 3877 | // The first two instructions are generated with labels so as to get the |
| 3878 | // offset fixed up correctly by the bind(Label*) call. We patch it back and |
| 3879 | // forth between a compare instructions (a nop in this position) and the |
| 3880 | // real branch when we start and stop incremental heap marking. |
| 3881 | // See RecordWriteStub::Patch for details. |
| 3882 | __ jmp(&skip_to_incremental_noncompacting, Label::kNear); |
| 3883 | __ jmp(&skip_to_incremental_compacting, Label::kFar); |
| 3884 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3885 | if (remembered_set_action() == EMIT_REMEMBERED_SET) { |
| 3886 | __ RememberedSetHelper(object(), address(), value(), save_fp_regs_mode(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3887 | MacroAssembler::kReturnAtEnd); |
| 3888 | } else { |
| 3889 | __ ret(0); |
| 3890 | } |
| 3891 | |
| 3892 | __ bind(&skip_to_incremental_noncompacting); |
| 3893 | GenerateIncremental(masm, INCREMENTAL); |
| 3894 | |
| 3895 | __ bind(&skip_to_incremental_compacting); |
| 3896 | GenerateIncremental(masm, INCREMENTAL_COMPACTION); |
| 3897 | |
| 3898 | // Initial mode of the stub is expected to be STORE_BUFFER_ONLY. |
| 3899 | // Will be checked in IncrementalMarking::ActivateGeneratedStub. |
| 3900 | masm->set_byte_at(0, kTwoByteNopInstruction); |
| 3901 | masm->set_byte_at(2, kFiveByteNopInstruction); |
| 3902 | } |
| 3903 | |
| 3904 | |
| 3905 | void RecordWriteStub::GenerateIncremental(MacroAssembler* masm, Mode mode) { |
| 3906 | regs_.Save(masm); |
| 3907 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3908 | if (remembered_set_action() == EMIT_REMEMBERED_SET) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3909 | Label dont_need_remembered_set; |
| 3910 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3911 | __ movp(regs_.scratch0(), Operand(regs_.address(), 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3912 | __ JumpIfNotInNewSpace(regs_.scratch0(), |
| 3913 | regs_.scratch0(), |
| 3914 | &dont_need_remembered_set); |
| 3915 | |
| 3916 | __ CheckPageFlag(regs_.object(), |
| 3917 | regs_.scratch0(), |
| 3918 | 1 << MemoryChunk::SCAN_ON_SCAVENGE, |
| 3919 | not_zero, |
| 3920 | &dont_need_remembered_set); |
| 3921 | |
| 3922 | // First notify the incremental marker if necessary, then update the |
| 3923 | // remembered set. |
| 3924 | CheckNeedsToInformIncrementalMarker( |
| 3925 | masm, kUpdateRememberedSetOnNoNeedToInformIncrementalMarker, mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3926 | InformIncrementalMarker(masm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3927 | regs_.Restore(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3928 | __ RememberedSetHelper(object(), address(), value(), save_fp_regs_mode(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3929 | MacroAssembler::kReturnAtEnd); |
| 3930 | |
| 3931 | __ bind(&dont_need_remembered_set); |
| 3932 | } |
| 3933 | |
| 3934 | CheckNeedsToInformIncrementalMarker( |
| 3935 | masm, kReturnOnNoNeedToInformIncrementalMarker, mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3936 | InformIncrementalMarker(masm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3937 | regs_.Restore(masm); |
| 3938 | __ ret(0); |
| 3939 | } |
| 3940 | |
| 3941 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3942 | void RecordWriteStub::InformIncrementalMarker(MacroAssembler* masm) { |
| 3943 | regs_.SaveCallerSaveRegisters(masm, save_fp_regs_mode()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3944 | Register address = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3945 | arg_reg_1.is(regs_.address()) ? kScratchRegister : regs_.address(); |
| 3946 | DCHECK(!address.is(regs_.object())); |
| 3947 | DCHECK(!address.is(arg_reg_1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3948 | __ Move(address, regs_.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3949 | __ Move(arg_reg_1, regs_.object()); |
| 3950 | // TODO(gc) Can we just set address arg2 in the beginning? |
| 3951 | __ Move(arg_reg_2, address); |
| 3952 | __ LoadAddress(arg_reg_3, |
| 3953 | ExternalReference::isolate_address(isolate())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3954 | int argument_count = 3; |
| 3955 | |
| 3956 | AllowExternalCallThatCantCauseGC scope(masm); |
| 3957 | __ PrepareCallCFunction(argument_count); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3958 | __ CallCFunction( |
| 3959 | ExternalReference::incremental_marking_record_write_function(isolate()), |
| 3960 | argument_count); |
| 3961 | regs_.RestoreCallerSaveRegisters(masm, save_fp_regs_mode()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3962 | } |
| 3963 | |
| 3964 | |
| 3965 | void RecordWriteStub::CheckNeedsToInformIncrementalMarker( |
| 3966 | MacroAssembler* masm, |
| 3967 | OnNoNeedToInformIncrementalMarker on_no_need, |
| 3968 | Mode mode) { |
| 3969 | Label on_black; |
| 3970 | Label need_incremental; |
| 3971 | Label need_incremental_pop_object; |
| 3972 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3973 | __ movp(regs_.scratch0(), Immediate(~Page::kPageAlignmentMask)); |
| 3974 | __ andp(regs_.scratch0(), regs_.object()); |
| 3975 | __ movp(regs_.scratch1(), |
| 3976 | Operand(regs_.scratch0(), |
| 3977 | MemoryChunk::kWriteBarrierCounterOffset)); |
| 3978 | __ subp(regs_.scratch1(), Immediate(1)); |
| 3979 | __ movp(Operand(regs_.scratch0(), |
| 3980 | MemoryChunk::kWriteBarrierCounterOffset), |
| 3981 | regs_.scratch1()); |
| 3982 | __ j(negative, &need_incremental); |
| 3983 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3984 | // Let's look at the color of the object: If it is not black we don't have |
| 3985 | // to inform the incremental marker. |
| 3986 | __ JumpIfBlack(regs_.object(), |
| 3987 | regs_.scratch0(), |
| 3988 | regs_.scratch1(), |
| 3989 | &on_black, |
| 3990 | Label::kNear); |
| 3991 | |
| 3992 | regs_.Restore(masm); |
| 3993 | if (on_no_need == kUpdateRememberedSetOnNoNeedToInformIncrementalMarker) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3994 | __ RememberedSetHelper(object(), address(), value(), save_fp_regs_mode(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3995 | MacroAssembler::kReturnAtEnd); |
| 3996 | } else { |
| 3997 | __ ret(0); |
| 3998 | } |
| 3999 | |
| 4000 | __ bind(&on_black); |
| 4001 | |
| 4002 | // Get the value from the slot. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4003 | __ movp(regs_.scratch0(), Operand(regs_.address(), 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4004 | |
| 4005 | if (mode == INCREMENTAL_COMPACTION) { |
| 4006 | Label ensure_not_white; |
| 4007 | |
| 4008 | __ CheckPageFlag(regs_.scratch0(), // Contains value. |
| 4009 | regs_.scratch1(), // Scratch. |
| 4010 | MemoryChunk::kEvacuationCandidateMask, |
| 4011 | zero, |
| 4012 | &ensure_not_white, |
| 4013 | Label::kNear); |
| 4014 | |
| 4015 | __ CheckPageFlag(regs_.object(), |
| 4016 | regs_.scratch1(), // Scratch. |
| 4017 | MemoryChunk::kSkipEvacuationSlotsRecordingMask, |
| 4018 | zero, |
| 4019 | &need_incremental); |
| 4020 | |
| 4021 | __ bind(&ensure_not_white); |
| 4022 | } |
| 4023 | |
| 4024 | // We need an extra register for this, so we push the object register |
| 4025 | // temporarily. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4026 | __ Push(regs_.object()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4027 | __ JumpIfWhite(regs_.scratch0(), // The value. |
| 4028 | regs_.scratch1(), // Scratch. |
| 4029 | regs_.object(), // Scratch. |
| 4030 | &need_incremental_pop_object, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4031 | __ Pop(regs_.object()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4032 | |
| 4033 | regs_.Restore(masm); |
| 4034 | if (on_no_need == kUpdateRememberedSetOnNoNeedToInformIncrementalMarker) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4035 | __ RememberedSetHelper(object(), address(), value(), save_fp_regs_mode(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4036 | MacroAssembler::kReturnAtEnd); |
| 4037 | } else { |
| 4038 | __ ret(0); |
| 4039 | } |
| 4040 | |
| 4041 | __ bind(&need_incremental_pop_object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4042 | __ Pop(regs_.object()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4043 | |
| 4044 | __ bind(&need_incremental); |
| 4045 | |
| 4046 | // Fall through when we need to inform the incremental marker. |
| 4047 | } |
| 4048 | |
| 4049 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4050 | void StubFailureTrampolineStub::Generate(MacroAssembler* masm) { |
| 4051 | CEntryStub ces(isolate(), 1, kSaveFPRegs); |
| 4052 | __ Call(ces.GetCode(), RelocInfo::CODE_TARGET); |
| 4053 | int parameter_count_offset = |
| 4054 | StubFailureTrampolineFrame::kCallerStackParameterCountFrameOffset; |
| 4055 | __ movp(rbx, MemOperand(rbp, parameter_count_offset)); |
| 4056 | masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE); |
| 4057 | __ PopReturnAddressTo(rcx); |
| 4058 | int additional_offset = |
| 4059 | function_mode() == JS_FUNCTION_STUB_MODE ? kPointerSize : 0; |
| 4060 | __ leap(rsp, MemOperand(rsp, rbx, times_pointer_size, additional_offset)); |
| 4061 | __ jmp(rcx); // Return to IC Miss stub, continuation still on stack. |
| 4062 | } |
| 4063 | |
| 4064 | |
| 4065 | void LoadICTrampolineStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4066 | __ EmitLoadTypeFeedbackVector(LoadWithVectorDescriptor::VectorRegister()); |
| 4067 | LoadICStub stub(isolate(), state()); |
| 4068 | stub.GenerateForTrampoline(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4069 | } |
| 4070 | |
| 4071 | |
| 4072 | void KeyedLoadICTrampolineStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4073 | __ EmitLoadTypeFeedbackVector(LoadWithVectorDescriptor::VectorRegister()); |
| 4074 | KeyedLoadICStub stub(isolate(), state()); |
| 4075 | stub.GenerateForTrampoline(masm); |
| 4076 | } |
| 4077 | |
| 4078 | |
| 4079 | static void HandleArrayCases(MacroAssembler* masm, Register feedback, |
| 4080 | Register receiver_map, Register scratch1, |
| 4081 | Register scratch2, Register scratch3, |
| 4082 | bool is_polymorphic, Label* miss) { |
| 4083 | // feedback initially contains the feedback array |
| 4084 | Label next_loop, prepare_next; |
| 4085 | Label start_polymorphic; |
| 4086 | |
| 4087 | Register counter = scratch1; |
| 4088 | Register length = scratch2; |
| 4089 | Register cached_map = scratch3; |
| 4090 | |
| 4091 | __ movp(cached_map, FieldOperand(feedback, FixedArray::OffsetOfElementAt(0))); |
| 4092 | __ cmpp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset)); |
| 4093 | __ j(not_equal, &start_polymorphic); |
| 4094 | |
| 4095 | // found, now call handler. |
| 4096 | Register handler = feedback; |
| 4097 | __ movp(handler, FieldOperand(feedback, FixedArray::OffsetOfElementAt(1))); |
| 4098 | __ leap(handler, FieldOperand(handler, Code::kHeaderSize)); |
| 4099 | __ jmp(handler); |
| 4100 | |
| 4101 | // Polymorphic, we have to loop from 2 to N |
| 4102 | __ bind(&start_polymorphic); |
| 4103 | __ SmiToInteger32(length, FieldOperand(feedback, FixedArray::kLengthOffset)); |
| 4104 | if (!is_polymorphic) { |
| 4105 | // If the IC could be monomorphic we have to make sure we don't go past the |
| 4106 | // end of the feedback array. |
| 4107 | __ cmpl(length, Immediate(2)); |
| 4108 | __ j(equal, miss); |
| 4109 | } |
| 4110 | __ movl(counter, Immediate(2)); |
| 4111 | |
| 4112 | __ bind(&next_loop); |
| 4113 | __ movp(cached_map, FieldOperand(feedback, counter, times_pointer_size, |
| 4114 | FixedArray::kHeaderSize)); |
| 4115 | __ cmpp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset)); |
| 4116 | __ j(not_equal, &prepare_next); |
| 4117 | __ movp(handler, FieldOperand(feedback, counter, times_pointer_size, |
| 4118 | FixedArray::kHeaderSize + kPointerSize)); |
| 4119 | __ leap(handler, FieldOperand(handler, Code::kHeaderSize)); |
| 4120 | __ jmp(handler); |
| 4121 | |
| 4122 | __ bind(&prepare_next); |
| 4123 | __ addl(counter, Immediate(2)); |
| 4124 | __ cmpl(counter, length); |
| 4125 | __ j(less, &next_loop); |
| 4126 | |
| 4127 | // We exhausted our array of map handler pairs. |
| 4128 | __ jmp(miss); |
| 4129 | } |
| 4130 | |
| 4131 | |
| 4132 | static void HandleMonomorphicCase(MacroAssembler* masm, Register receiver, |
| 4133 | Register receiver_map, Register feedback, |
| 4134 | Register vector, Register integer_slot, |
| 4135 | Label* compare_map, Label* load_smi_map, |
| 4136 | Label* try_array) { |
| 4137 | __ JumpIfSmi(receiver, load_smi_map); |
| 4138 | __ movp(receiver_map, FieldOperand(receiver, 0)); |
| 4139 | |
| 4140 | __ bind(compare_map); |
| 4141 | __ cmpp(receiver_map, FieldOperand(feedback, WeakCell::kValueOffset)); |
| 4142 | __ j(not_equal, try_array); |
| 4143 | Register handler = feedback; |
| 4144 | __ movp(handler, FieldOperand(vector, integer_slot, times_pointer_size, |
| 4145 | FixedArray::kHeaderSize + kPointerSize)); |
| 4146 | __ leap(handler, FieldOperand(handler, Code::kHeaderSize)); |
| 4147 | __ jmp(handler); |
| 4148 | } |
| 4149 | |
| 4150 | |
| 4151 | void LoadICStub::Generate(MacroAssembler* masm) { GenerateImpl(masm, false); } |
| 4152 | |
| 4153 | |
| 4154 | void LoadICStub::GenerateForTrampoline(MacroAssembler* masm) { |
| 4155 | GenerateImpl(masm, true); |
| 4156 | } |
| 4157 | |
| 4158 | |
| 4159 | void LoadICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) { |
| 4160 | Register receiver = LoadWithVectorDescriptor::ReceiverRegister(); // rdx |
| 4161 | Register name = LoadWithVectorDescriptor::NameRegister(); // rcx |
| 4162 | Register vector = LoadWithVectorDescriptor::VectorRegister(); // rbx |
| 4163 | Register slot = LoadWithVectorDescriptor::SlotRegister(); // rax |
| 4164 | Register feedback = rdi; |
| 4165 | Register integer_slot = r8; |
| 4166 | Register receiver_map = r9; |
| 4167 | |
| 4168 | __ SmiToInteger32(integer_slot, slot); |
| 4169 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 4170 | FixedArray::kHeaderSize)); |
| 4171 | |
| 4172 | // Try to quickly handle the monomorphic case without knowing for sure |
| 4173 | // if we have a weak cell in feedback. We do know it's safe to look |
| 4174 | // at WeakCell::kValueOffset. |
| 4175 | Label try_array, load_smi_map, compare_map; |
| 4176 | Label not_array, miss; |
| 4177 | HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, |
| 4178 | integer_slot, &compare_map, &load_smi_map, &try_array); |
| 4179 | |
| 4180 | // Is it a fixed array? |
| 4181 | __ bind(&try_array); |
| 4182 | __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex); |
| 4183 | __ j(not_equal, ¬_array); |
| 4184 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r11, r15, true, |
| 4185 | &miss); |
| 4186 | |
| 4187 | __ bind(¬_array); |
| 4188 | __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex); |
| 4189 | __ j(not_equal, &miss); |
| 4190 | Code::Flags code_flags = Code::RemoveTypeAndHolderFromFlags( |
| 4191 | Code::ComputeHandlerFlags(Code::LOAD_IC)); |
| 4192 | masm->isolate()->stub_cache()->GenerateProbe( |
| 4193 | masm, Code::LOAD_IC, code_flags, receiver, name, feedback, no_reg); |
| 4194 | |
| 4195 | __ bind(&miss); |
| 4196 | LoadIC::GenerateMiss(masm); |
| 4197 | |
| 4198 | __ bind(&load_smi_map); |
| 4199 | __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); |
| 4200 | __ jmp(&compare_map); |
| 4201 | } |
| 4202 | |
| 4203 | |
| 4204 | void KeyedLoadICStub::Generate(MacroAssembler* masm) { |
| 4205 | GenerateImpl(masm, false); |
| 4206 | } |
| 4207 | |
| 4208 | |
| 4209 | void KeyedLoadICStub::GenerateForTrampoline(MacroAssembler* masm) { |
| 4210 | GenerateImpl(masm, true); |
| 4211 | } |
| 4212 | |
| 4213 | |
| 4214 | void KeyedLoadICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) { |
| 4215 | Register receiver = LoadWithVectorDescriptor::ReceiverRegister(); // rdx |
| 4216 | Register key = LoadWithVectorDescriptor::NameRegister(); // rcx |
| 4217 | Register vector = LoadWithVectorDescriptor::VectorRegister(); // rbx |
| 4218 | Register slot = LoadWithVectorDescriptor::SlotRegister(); // rax |
| 4219 | Register feedback = rdi; |
| 4220 | Register integer_slot = r8; |
| 4221 | Register receiver_map = r9; |
| 4222 | |
| 4223 | __ SmiToInteger32(integer_slot, slot); |
| 4224 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 4225 | FixedArray::kHeaderSize)); |
| 4226 | |
| 4227 | // Try to quickly handle the monomorphic case without knowing for sure |
| 4228 | // if we have a weak cell in feedback. We do know it's safe to look |
| 4229 | // at WeakCell::kValueOffset. |
| 4230 | Label try_array, load_smi_map, compare_map; |
| 4231 | Label not_array, miss; |
| 4232 | HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, |
| 4233 | integer_slot, &compare_map, &load_smi_map, &try_array); |
| 4234 | |
| 4235 | __ bind(&try_array); |
| 4236 | // Is it a fixed array? |
| 4237 | __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex); |
| 4238 | __ j(not_equal, ¬_array); |
| 4239 | |
| 4240 | // We have a polymorphic element handler. |
| 4241 | Label polymorphic, try_poly_name; |
| 4242 | __ bind(&polymorphic); |
| 4243 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r11, r15, true, |
| 4244 | &miss); |
| 4245 | |
| 4246 | __ bind(¬_array); |
| 4247 | // Is it generic? |
| 4248 | __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex); |
| 4249 | __ j(not_equal, &try_poly_name); |
| 4250 | Handle<Code> megamorphic_stub = |
| 4251 | KeyedLoadIC::ChooseMegamorphicStub(masm->isolate(), GetExtraICState()); |
| 4252 | __ jmp(megamorphic_stub, RelocInfo::CODE_TARGET); |
| 4253 | |
| 4254 | __ bind(&try_poly_name); |
| 4255 | // We might have a name in feedback, and a fixed array in the next slot. |
| 4256 | __ cmpp(key, feedback); |
| 4257 | __ j(not_equal, &miss); |
| 4258 | // If the name comparison succeeded, we know we have a fixed array with |
| 4259 | // at least one map/handler pair. |
| 4260 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 4261 | FixedArray::kHeaderSize + kPointerSize)); |
| 4262 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r11, r15, false, |
| 4263 | &miss); |
| 4264 | |
| 4265 | __ bind(&miss); |
| 4266 | KeyedLoadIC::GenerateMiss(masm); |
| 4267 | |
| 4268 | __ bind(&load_smi_map); |
| 4269 | __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); |
| 4270 | __ jmp(&compare_map); |
| 4271 | } |
| 4272 | |
| 4273 | |
| 4274 | void VectorStoreICTrampolineStub::Generate(MacroAssembler* masm) { |
| 4275 | __ EmitLoadTypeFeedbackVector(VectorStoreICDescriptor::VectorRegister()); |
| 4276 | VectorStoreICStub stub(isolate(), state()); |
| 4277 | stub.GenerateForTrampoline(masm); |
| 4278 | } |
| 4279 | |
| 4280 | |
| 4281 | void VectorKeyedStoreICTrampolineStub::Generate(MacroAssembler* masm) { |
| 4282 | __ EmitLoadTypeFeedbackVector(VectorStoreICDescriptor::VectorRegister()); |
| 4283 | VectorKeyedStoreICStub stub(isolate(), state()); |
| 4284 | stub.GenerateForTrampoline(masm); |
| 4285 | } |
| 4286 | |
| 4287 | |
| 4288 | void VectorStoreICStub::Generate(MacroAssembler* masm) { |
| 4289 | GenerateImpl(masm, false); |
| 4290 | } |
| 4291 | |
| 4292 | |
| 4293 | void VectorStoreICStub::GenerateForTrampoline(MacroAssembler* masm) { |
| 4294 | GenerateImpl(masm, true); |
| 4295 | } |
| 4296 | |
| 4297 | |
| 4298 | void VectorStoreICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) { |
| 4299 | Register receiver = VectorStoreICDescriptor::ReceiverRegister(); // rdx |
| 4300 | Register key = VectorStoreICDescriptor::NameRegister(); // rcx |
| 4301 | Register vector = VectorStoreICDescriptor::VectorRegister(); // rbx |
| 4302 | Register slot = VectorStoreICDescriptor::SlotRegister(); // rdi |
| 4303 | DCHECK(VectorStoreICDescriptor::ValueRegister().is(rax)); // rax |
| 4304 | Register feedback = r8; |
| 4305 | Register integer_slot = r9; |
| 4306 | Register receiver_map = r11; |
| 4307 | DCHECK(!AreAliased(feedback, integer_slot, vector, slot, receiver_map)); |
| 4308 | |
| 4309 | __ SmiToInteger32(integer_slot, slot); |
| 4310 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 4311 | FixedArray::kHeaderSize)); |
| 4312 | |
| 4313 | // Try to quickly handle the monomorphic case without knowing for sure |
| 4314 | // if we have a weak cell in feedback. We do know it's safe to look |
| 4315 | // at WeakCell::kValueOffset. |
| 4316 | Label try_array, load_smi_map, compare_map; |
| 4317 | Label not_array, miss; |
| 4318 | HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, |
| 4319 | integer_slot, &compare_map, &load_smi_map, &try_array); |
| 4320 | |
| 4321 | // Is it a fixed array? |
| 4322 | __ bind(&try_array); |
| 4323 | __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex); |
| 4324 | __ j(not_equal, ¬_array); |
| 4325 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r14, r15, true, |
| 4326 | &miss); |
| 4327 | |
| 4328 | __ bind(¬_array); |
| 4329 | __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex); |
| 4330 | __ j(not_equal, &miss); |
| 4331 | |
| 4332 | Code::Flags code_flags = Code::RemoveTypeAndHolderFromFlags( |
| 4333 | Code::ComputeHandlerFlags(Code::STORE_IC)); |
| 4334 | masm->isolate()->stub_cache()->GenerateProbe(masm, Code::STORE_IC, code_flags, |
| 4335 | receiver, key, feedback, no_reg); |
| 4336 | |
| 4337 | __ bind(&miss); |
| 4338 | StoreIC::GenerateMiss(masm); |
| 4339 | |
| 4340 | __ bind(&load_smi_map); |
| 4341 | __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); |
| 4342 | __ jmp(&compare_map); |
| 4343 | } |
| 4344 | |
| 4345 | |
| 4346 | void VectorKeyedStoreICStub::Generate(MacroAssembler* masm) { |
| 4347 | GenerateImpl(masm, false); |
| 4348 | } |
| 4349 | |
| 4350 | |
| 4351 | void VectorKeyedStoreICStub::GenerateForTrampoline(MacroAssembler* masm) { |
| 4352 | GenerateImpl(masm, true); |
| 4353 | } |
| 4354 | |
| 4355 | |
| 4356 | static void HandlePolymorphicKeyedStoreCase(MacroAssembler* masm, |
| 4357 | Register receiver_map, |
| 4358 | Register feedback, Register scratch, |
| 4359 | Register scratch1, |
| 4360 | Register scratch2, Label* miss) { |
| 4361 | // feedback initially contains the feedback array |
| 4362 | Label next, next_loop, prepare_next; |
| 4363 | Label transition_call; |
| 4364 | |
| 4365 | Register cached_map = scratch; |
| 4366 | Register counter = scratch1; |
| 4367 | Register length = scratch2; |
| 4368 | |
| 4369 | // Polymorphic, we have to loop from 0 to N - 1 |
| 4370 | __ movp(counter, Immediate(0)); |
| 4371 | __ movp(length, FieldOperand(feedback, FixedArray::kLengthOffset)); |
| 4372 | __ SmiToInteger32(length, length); |
| 4373 | |
| 4374 | __ bind(&next_loop); |
| 4375 | __ movp(cached_map, FieldOperand(feedback, counter, times_pointer_size, |
| 4376 | FixedArray::kHeaderSize)); |
| 4377 | __ cmpp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset)); |
| 4378 | __ j(not_equal, &prepare_next); |
| 4379 | __ movp(cached_map, FieldOperand(feedback, counter, times_pointer_size, |
| 4380 | FixedArray::kHeaderSize + kPointerSize)); |
| 4381 | __ CompareRoot(cached_map, Heap::kUndefinedValueRootIndex); |
| 4382 | __ j(not_equal, &transition_call); |
| 4383 | __ movp(feedback, FieldOperand(feedback, counter, times_pointer_size, |
| 4384 | FixedArray::kHeaderSize + 2 * kPointerSize)); |
| 4385 | __ leap(feedback, FieldOperand(feedback, Code::kHeaderSize)); |
| 4386 | __ jmp(feedback); |
| 4387 | |
| 4388 | __ bind(&transition_call); |
| 4389 | DCHECK(receiver_map.is(VectorStoreTransitionDescriptor::MapRegister())); |
| 4390 | __ movp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset)); |
| 4391 | // The weak cell may have been cleared. |
| 4392 | __ JumpIfSmi(receiver_map, miss); |
| 4393 | // Get the handler in value. |
| 4394 | __ movp(feedback, FieldOperand(feedback, counter, times_pointer_size, |
| 4395 | FixedArray::kHeaderSize + 2 * kPointerSize)); |
| 4396 | __ leap(feedback, FieldOperand(feedback, Code::kHeaderSize)); |
| 4397 | __ jmp(feedback); |
| 4398 | |
| 4399 | __ bind(&prepare_next); |
| 4400 | __ addl(counter, Immediate(3)); |
| 4401 | __ cmpl(counter, length); |
| 4402 | __ j(less, &next_loop); |
| 4403 | |
| 4404 | // We exhausted our array of map handler pairs. |
| 4405 | __ jmp(miss); |
| 4406 | } |
| 4407 | |
| 4408 | |
| 4409 | void VectorKeyedStoreICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) { |
| 4410 | Register receiver = VectorStoreICDescriptor::ReceiverRegister(); // rdx |
| 4411 | Register key = VectorStoreICDescriptor::NameRegister(); // rcx |
| 4412 | Register vector = VectorStoreICDescriptor::VectorRegister(); // rbx |
| 4413 | Register slot = VectorStoreICDescriptor::SlotRegister(); // rdi |
| 4414 | DCHECK(VectorStoreICDescriptor::ValueRegister().is(rax)); // rax |
| 4415 | Register feedback = r8; |
| 4416 | Register integer_slot = r9; |
| 4417 | Register receiver_map = r11; |
| 4418 | DCHECK(!AreAliased(feedback, integer_slot, vector, slot, receiver_map)); |
| 4419 | |
| 4420 | __ SmiToInteger32(integer_slot, slot); |
| 4421 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 4422 | FixedArray::kHeaderSize)); |
| 4423 | |
| 4424 | // Try to quickly handle the monomorphic case without knowing for sure |
| 4425 | // if we have a weak cell in feedback. We do know it's safe to look |
| 4426 | // at WeakCell::kValueOffset. |
| 4427 | Label try_array, load_smi_map, compare_map; |
| 4428 | Label not_array, miss; |
| 4429 | HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, |
| 4430 | integer_slot, &compare_map, &load_smi_map, &try_array); |
| 4431 | |
| 4432 | // Is it a fixed array? |
| 4433 | __ bind(&try_array); |
| 4434 | __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex); |
| 4435 | __ j(not_equal, ¬_array); |
| 4436 | HandlePolymorphicKeyedStoreCase(masm, receiver_map, feedback, integer_slot, |
| 4437 | r15, r14, &miss); |
| 4438 | |
| 4439 | __ bind(¬_array); |
| 4440 | Label try_poly_name; |
| 4441 | __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex); |
| 4442 | __ j(not_equal, &try_poly_name); |
| 4443 | |
| 4444 | Handle<Code> megamorphic_stub = |
| 4445 | KeyedStoreIC::ChooseMegamorphicStub(masm->isolate(), GetExtraICState()); |
| 4446 | __ jmp(megamorphic_stub, RelocInfo::CODE_TARGET); |
| 4447 | |
| 4448 | __ bind(&try_poly_name); |
| 4449 | // We might have a name in feedback, and a fixed array in the next slot. |
| 4450 | __ cmpp(key, feedback); |
| 4451 | __ j(not_equal, &miss); |
| 4452 | // If the name comparison succeeded, we know we have a fixed array with |
| 4453 | // at least one map/handler pair. |
| 4454 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 4455 | FixedArray::kHeaderSize + kPointerSize)); |
| 4456 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r14, r15, false, |
| 4457 | &miss); |
| 4458 | |
| 4459 | __ bind(&miss); |
| 4460 | KeyedStoreIC::GenerateMiss(masm); |
| 4461 | |
| 4462 | __ bind(&load_smi_map); |
| 4463 | __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); |
| 4464 | __ jmp(&compare_map); |
| 4465 | } |
| 4466 | |
| 4467 | |
| 4468 | void CallICTrampolineStub::Generate(MacroAssembler* masm) { |
| 4469 | __ EmitLoadTypeFeedbackVector(rbx); |
| 4470 | CallICStub stub(isolate(), state()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4471 | __ jmp(stub.GetCode(), RelocInfo::CODE_TARGET); |
| 4472 | } |
| 4473 | |
| 4474 | |
| 4475 | void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) { |
| 4476 | if (masm->isolate()->function_entry_hook() != NULL) { |
| 4477 | ProfileEntryHookStub stub(masm->isolate()); |
| 4478 | masm->CallStub(&stub); |
| 4479 | } |
| 4480 | } |
| 4481 | |
| 4482 | |
| 4483 | void ProfileEntryHookStub::Generate(MacroAssembler* masm) { |
| 4484 | // This stub can be called from essentially anywhere, so it needs to save |
| 4485 | // all volatile and callee-save registers. |
| 4486 | const size_t kNumSavedRegisters = 2; |
| 4487 | __ pushq(arg_reg_1); |
| 4488 | __ pushq(arg_reg_2); |
| 4489 | |
| 4490 | // Calculate the original stack pointer and store it in the second arg. |
| 4491 | __ leap(arg_reg_2, |
| 4492 | Operand(rsp, kNumSavedRegisters * kRegisterSize + kPCOnStackSize)); |
| 4493 | |
| 4494 | // Calculate the function address to the first arg. |
| 4495 | __ movp(arg_reg_1, Operand(rsp, kNumSavedRegisters * kRegisterSize)); |
| 4496 | __ subp(arg_reg_1, Immediate(Assembler::kShortCallInstructionLength)); |
| 4497 | |
| 4498 | // Save the remainder of the volatile registers. |
| 4499 | masm->PushCallerSaved(kSaveFPRegs, arg_reg_1, arg_reg_2); |
| 4500 | |
| 4501 | // Call the entry hook function. |
| 4502 | __ Move(rax, FUNCTION_ADDR(isolate()->function_entry_hook()), |
| 4503 | Assembler::RelocInfoNone()); |
| 4504 | |
| 4505 | AllowExternalCallThatCantCauseGC scope(masm); |
| 4506 | |
| 4507 | const int kArgumentCount = 2; |
| 4508 | __ PrepareCallCFunction(kArgumentCount); |
| 4509 | __ CallCFunction(rax, kArgumentCount); |
| 4510 | |
| 4511 | // Restore volatile regs. |
| 4512 | masm->PopCallerSaved(kSaveFPRegs, arg_reg_1, arg_reg_2); |
| 4513 | __ popq(arg_reg_2); |
| 4514 | __ popq(arg_reg_1); |
| 4515 | |
| 4516 | __ Ret(); |
| 4517 | } |
| 4518 | |
| 4519 | |
| 4520 | template<class T> |
| 4521 | static void CreateArrayDispatch(MacroAssembler* masm, |
| 4522 | AllocationSiteOverrideMode mode) { |
| 4523 | if (mode == DISABLE_ALLOCATION_SITES) { |
| 4524 | T stub(masm->isolate(), GetInitialFastElementsKind(), mode); |
| 4525 | __ TailCallStub(&stub); |
| 4526 | } else if (mode == DONT_OVERRIDE) { |
| 4527 | int last_index = GetSequenceIndexFromFastElementsKind( |
| 4528 | TERMINAL_FAST_ELEMENTS_KIND); |
| 4529 | for (int i = 0; i <= last_index; ++i) { |
| 4530 | Label next; |
| 4531 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 4532 | __ cmpl(rdx, Immediate(kind)); |
| 4533 | __ j(not_equal, &next); |
| 4534 | T stub(masm->isolate(), kind); |
| 4535 | __ TailCallStub(&stub); |
| 4536 | __ bind(&next); |
| 4537 | } |
| 4538 | |
| 4539 | // If we reached this point there is a problem. |
| 4540 | __ Abort(kUnexpectedElementsKindInArrayConstructor); |
| 4541 | } else { |
| 4542 | UNREACHABLE(); |
| 4543 | } |
| 4544 | } |
| 4545 | |
| 4546 | |
| 4547 | static void CreateArrayDispatchOneArgument(MacroAssembler* masm, |
| 4548 | AllocationSiteOverrideMode mode) { |
| 4549 | // rbx - allocation site (if mode != DISABLE_ALLOCATION_SITES) |
| 4550 | // rdx - kind (if mode != DISABLE_ALLOCATION_SITES) |
| 4551 | // rax - number of arguments |
| 4552 | // rdi - constructor? |
| 4553 | // rsp[0] - return address |
| 4554 | // rsp[8] - last argument |
| 4555 | Handle<Object> undefined_sentinel( |
| 4556 | masm->isolate()->heap()->undefined_value(), |
| 4557 | masm->isolate()); |
| 4558 | |
| 4559 | Label normal_sequence; |
| 4560 | if (mode == DONT_OVERRIDE) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4561 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 4562 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 4563 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 4564 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
| 4565 | STATIC_ASSERT(FAST_DOUBLE_ELEMENTS == 4); |
| 4566 | STATIC_ASSERT(FAST_HOLEY_DOUBLE_ELEMENTS == 5); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4567 | |
| 4568 | // is the low bit set? If so, we are holey and that is good. |
| 4569 | __ testb(rdx, Immediate(1)); |
| 4570 | __ j(not_zero, &normal_sequence); |
| 4571 | } |
| 4572 | |
| 4573 | // look at the first argument |
| 4574 | StackArgumentsAccessor args(rsp, 1, ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 4575 | __ movp(rcx, args.GetArgumentOperand(0)); |
| 4576 | __ testp(rcx, rcx); |
| 4577 | __ j(zero, &normal_sequence); |
| 4578 | |
| 4579 | if (mode == DISABLE_ALLOCATION_SITES) { |
| 4580 | ElementsKind initial = GetInitialFastElementsKind(); |
| 4581 | ElementsKind holey_initial = GetHoleyElementsKind(initial); |
| 4582 | |
| 4583 | ArraySingleArgumentConstructorStub stub_holey(masm->isolate(), |
| 4584 | holey_initial, |
| 4585 | DISABLE_ALLOCATION_SITES); |
| 4586 | __ TailCallStub(&stub_holey); |
| 4587 | |
| 4588 | __ bind(&normal_sequence); |
| 4589 | ArraySingleArgumentConstructorStub stub(masm->isolate(), |
| 4590 | initial, |
| 4591 | DISABLE_ALLOCATION_SITES); |
| 4592 | __ TailCallStub(&stub); |
| 4593 | } else if (mode == DONT_OVERRIDE) { |
| 4594 | // We are going to create a holey array, but our kind is non-holey. |
| 4595 | // Fix kind and retry (only if we have an allocation site in the slot). |
| 4596 | __ incl(rdx); |
| 4597 | |
| 4598 | if (FLAG_debug_code) { |
| 4599 | Handle<Map> allocation_site_map = |
| 4600 | masm->isolate()->factory()->allocation_site_map(); |
| 4601 | __ Cmp(FieldOperand(rbx, 0), allocation_site_map); |
| 4602 | __ Assert(equal, kExpectedAllocationSite); |
| 4603 | } |
| 4604 | |
| 4605 | // Save the resulting elements kind in type info. We can't just store r3 |
| 4606 | // in the AllocationSite::transition_info field because elements kind is |
| 4607 | // restricted to a portion of the field...upper bits need to be left alone. |
| 4608 | STATIC_ASSERT(AllocationSite::ElementsKindBits::kShift == 0); |
| 4609 | __ SmiAddConstant(FieldOperand(rbx, AllocationSite::kTransitionInfoOffset), |
| 4610 | Smi::FromInt(kFastElementsKindPackedToHoley)); |
| 4611 | |
| 4612 | __ bind(&normal_sequence); |
| 4613 | int last_index = GetSequenceIndexFromFastElementsKind( |
| 4614 | TERMINAL_FAST_ELEMENTS_KIND); |
| 4615 | for (int i = 0; i <= last_index; ++i) { |
| 4616 | Label next; |
| 4617 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 4618 | __ cmpl(rdx, Immediate(kind)); |
| 4619 | __ j(not_equal, &next); |
| 4620 | ArraySingleArgumentConstructorStub stub(masm->isolate(), kind); |
| 4621 | __ TailCallStub(&stub); |
| 4622 | __ bind(&next); |
| 4623 | } |
| 4624 | |
| 4625 | // If we reached this point there is a problem. |
| 4626 | __ Abort(kUnexpectedElementsKindInArrayConstructor); |
| 4627 | } else { |
| 4628 | UNREACHABLE(); |
| 4629 | } |
| 4630 | } |
| 4631 | |
| 4632 | |
| 4633 | template<class T> |
| 4634 | static void ArrayConstructorStubAheadOfTimeHelper(Isolate* isolate) { |
| 4635 | int to_index = GetSequenceIndexFromFastElementsKind( |
| 4636 | TERMINAL_FAST_ELEMENTS_KIND); |
| 4637 | for (int i = 0; i <= to_index; ++i) { |
| 4638 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 4639 | T stub(isolate, kind); |
| 4640 | stub.GetCode(); |
| 4641 | if (AllocationSite::GetMode(kind) != DONT_TRACK_ALLOCATION_SITE) { |
| 4642 | T stub1(isolate, kind, DISABLE_ALLOCATION_SITES); |
| 4643 | stub1.GetCode(); |
| 4644 | } |
| 4645 | } |
| 4646 | } |
| 4647 | |
| 4648 | |
| 4649 | void ArrayConstructorStubBase::GenerateStubsAheadOfTime(Isolate* isolate) { |
| 4650 | ArrayConstructorStubAheadOfTimeHelper<ArrayNoArgumentConstructorStub>( |
| 4651 | isolate); |
| 4652 | ArrayConstructorStubAheadOfTimeHelper<ArraySingleArgumentConstructorStub>( |
| 4653 | isolate); |
| 4654 | ArrayConstructorStubAheadOfTimeHelper<ArrayNArgumentsConstructorStub>( |
| 4655 | isolate); |
| 4656 | } |
| 4657 | |
| 4658 | |
| 4659 | void InternalArrayConstructorStubBase::GenerateStubsAheadOfTime( |
| 4660 | Isolate* isolate) { |
| 4661 | ElementsKind kinds[2] = { FAST_ELEMENTS, FAST_HOLEY_ELEMENTS }; |
| 4662 | for (int i = 0; i < 2; i++) { |
| 4663 | // For internal arrays we only need a few things |
| 4664 | InternalArrayNoArgumentConstructorStub stubh1(isolate, kinds[i]); |
| 4665 | stubh1.GetCode(); |
| 4666 | InternalArraySingleArgumentConstructorStub stubh2(isolate, kinds[i]); |
| 4667 | stubh2.GetCode(); |
| 4668 | InternalArrayNArgumentsConstructorStub stubh3(isolate, kinds[i]); |
| 4669 | stubh3.GetCode(); |
| 4670 | } |
| 4671 | } |
| 4672 | |
| 4673 | |
| 4674 | void ArrayConstructorStub::GenerateDispatchToArrayStub( |
| 4675 | MacroAssembler* masm, |
| 4676 | AllocationSiteOverrideMode mode) { |
| 4677 | if (argument_count() == ANY) { |
| 4678 | Label not_zero_case, not_one_case; |
| 4679 | __ testp(rax, rax); |
| 4680 | __ j(not_zero, ¬_zero_case); |
| 4681 | CreateArrayDispatch<ArrayNoArgumentConstructorStub>(masm, mode); |
| 4682 | |
| 4683 | __ bind(¬_zero_case); |
| 4684 | __ cmpl(rax, Immediate(1)); |
| 4685 | __ j(greater, ¬_one_case); |
| 4686 | CreateArrayDispatchOneArgument(masm, mode); |
| 4687 | |
| 4688 | __ bind(¬_one_case); |
| 4689 | CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm, mode); |
| 4690 | } else if (argument_count() == NONE) { |
| 4691 | CreateArrayDispatch<ArrayNoArgumentConstructorStub>(masm, mode); |
| 4692 | } else if (argument_count() == ONE) { |
| 4693 | CreateArrayDispatchOneArgument(masm, mode); |
| 4694 | } else if (argument_count() == MORE_THAN_ONE) { |
| 4695 | CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm, mode); |
| 4696 | } else { |
| 4697 | UNREACHABLE(); |
| 4698 | } |
| 4699 | } |
| 4700 | |
| 4701 | |
| 4702 | void ArrayConstructorStub::Generate(MacroAssembler* masm) { |
| 4703 | // ----------- S t a t e ------------- |
| 4704 | // -- rax : argc |
| 4705 | // -- rbx : AllocationSite or undefined |
| 4706 | // -- rdi : constructor |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4707 | // -- rdx : new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4708 | // -- rsp[0] : return address |
| 4709 | // -- rsp[8] : last argument |
| 4710 | // ----------------------------------- |
| 4711 | if (FLAG_debug_code) { |
| 4712 | // The array construct code is only set for the global and natives |
| 4713 | // builtin Array functions which always have maps. |
| 4714 | |
| 4715 | // Initial map for the builtin Array function should be a map. |
| 4716 | __ movp(rcx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4717 | // Will both indicate a NULL and a Smi. |
| 4718 | STATIC_ASSERT(kSmiTag == 0); |
| 4719 | Condition not_smi = NegateCondition(masm->CheckSmi(rcx)); |
| 4720 | __ Check(not_smi, kUnexpectedInitialMapForArrayFunction); |
| 4721 | __ CmpObjectType(rcx, MAP_TYPE, rcx); |
| 4722 | __ Check(equal, kUnexpectedInitialMapForArrayFunction); |
| 4723 | |
| 4724 | // We should either have undefined in rbx or a valid AllocationSite |
| 4725 | __ AssertUndefinedOrAllocationSite(rbx); |
| 4726 | } |
| 4727 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4728 | // Enter the context of the Array function. |
| 4729 | __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 4730 | |
| 4731 | Label subclassing; |
| 4732 | __ cmpp(rdi, rdx); |
| 4733 | __ j(not_equal, &subclassing); |
| 4734 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4735 | Label no_info; |
| 4736 | // If the feedback vector is the undefined value call an array constructor |
| 4737 | // that doesn't use AllocationSites. |
| 4738 | __ CompareRoot(rbx, Heap::kUndefinedValueRootIndex); |
| 4739 | __ j(equal, &no_info); |
| 4740 | |
| 4741 | // Only look at the lower 16 bits of the transition info. |
| 4742 | __ movp(rdx, FieldOperand(rbx, AllocationSite::kTransitionInfoOffset)); |
| 4743 | __ SmiToInteger32(rdx, rdx); |
| 4744 | STATIC_ASSERT(AllocationSite::ElementsKindBits::kShift == 0); |
| 4745 | __ andp(rdx, Immediate(AllocationSite::ElementsKindBits::kMask)); |
| 4746 | GenerateDispatchToArrayStub(masm, DONT_OVERRIDE); |
| 4747 | |
| 4748 | __ bind(&no_info); |
| 4749 | GenerateDispatchToArrayStub(masm, DISABLE_ALLOCATION_SITES); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4750 | |
| 4751 | // Subclassing |
| 4752 | __ bind(&subclassing); |
| 4753 | switch (argument_count()) { |
| 4754 | case ANY: |
| 4755 | case MORE_THAN_ONE: { |
| 4756 | StackArgumentsAccessor args(rsp, rax); |
| 4757 | __ movp(args.GetReceiverOperand(), rdi); |
| 4758 | __ addp(rax, Immediate(3)); |
| 4759 | break; |
| 4760 | } |
| 4761 | case NONE: { |
| 4762 | StackArgumentsAccessor args(rsp, 0); |
| 4763 | __ movp(args.GetReceiverOperand(), rdi); |
| 4764 | __ Set(rax, 3); |
| 4765 | break; |
| 4766 | } |
| 4767 | case ONE: { |
| 4768 | StackArgumentsAccessor args(rsp, 1); |
| 4769 | __ movp(args.GetReceiverOperand(), rdi); |
| 4770 | __ Set(rax, 4); |
| 4771 | break; |
| 4772 | } |
| 4773 | } |
| 4774 | __ PopReturnAddressTo(rcx); |
| 4775 | __ Push(rdx); |
| 4776 | __ Push(rbx); |
| 4777 | __ PushReturnAddressFrom(rcx); |
| 4778 | __ JumpToExternalReference(ExternalReference(Runtime::kNewArray, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4779 | } |
| 4780 | |
| 4781 | |
| 4782 | void InternalArrayConstructorStub::GenerateCase( |
| 4783 | MacroAssembler* masm, ElementsKind kind) { |
| 4784 | Label not_zero_case, not_one_case; |
| 4785 | Label normal_sequence; |
| 4786 | |
| 4787 | __ testp(rax, rax); |
| 4788 | __ j(not_zero, ¬_zero_case); |
| 4789 | InternalArrayNoArgumentConstructorStub stub0(isolate(), kind); |
| 4790 | __ TailCallStub(&stub0); |
| 4791 | |
| 4792 | __ bind(¬_zero_case); |
| 4793 | __ cmpl(rax, Immediate(1)); |
| 4794 | __ j(greater, ¬_one_case); |
| 4795 | |
| 4796 | if (IsFastPackedElementsKind(kind)) { |
| 4797 | // We might need to create a holey array |
| 4798 | // look at the first argument |
| 4799 | StackArgumentsAccessor args(rsp, 1, ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 4800 | __ movp(rcx, args.GetArgumentOperand(0)); |
| 4801 | __ testp(rcx, rcx); |
| 4802 | __ j(zero, &normal_sequence); |
| 4803 | |
| 4804 | InternalArraySingleArgumentConstructorStub |
| 4805 | stub1_holey(isolate(), GetHoleyElementsKind(kind)); |
| 4806 | __ TailCallStub(&stub1_holey); |
| 4807 | } |
| 4808 | |
| 4809 | __ bind(&normal_sequence); |
| 4810 | InternalArraySingleArgumentConstructorStub stub1(isolate(), kind); |
| 4811 | __ TailCallStub(&stub1); |
| 4812 | |
| 4813 | __ bind(¬_one_case); |
| 4814 | InternalArrayNArgumentsConstructorStub stubN(isolate(), kind); |
| 4815 | __ TailCallStub(&stubN); |
| 4816 | } |
| 4817 | |
| 4818 | |
| 4819 | void InternalArrayConstructorStub::Generate(MacroAssembler* masm) { |
| 4820 | // ----------- S t a t e ------------- |
| 4821 | // -- rax : argc |
| 4822 | // -- rdi : constructor |
| 4823 | // -- rsp[0] : return address |
| 4824 | // -- rsp[8] : last argument |
| 4825 | // ----------------------------------- |
| 4826 | |
| 4827 | if (FLAG_debug_code) { |
| 4828 | // The array construct code is only set for the global and natives |
| 4829 | // builtin Array functions which always have maps. |
| 4830 | |
| 4831 | // Initial map for the builtin Array function should be a map. |
| 4832 | __ movp(rcx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4833 | // Will both indicate a NULL and a Smi. |
| 4834 | STATIC_ASSERT(kSmiTag == 0); |
| 4835 | Condition not_smi = NegateCondition(masm->CheckSmi(rcx)); |
| 4836 | __ Check(not_smi, kUnexpectedInitialMapForArrayFunction); |
| 4837 | __ CmpObjectType(rcx, MAP_TYPE, rcx); |
| 4838 | __ Check(equal, kUnexpectedInitialMapForArrayFunction); |
| 4839 | } |
| 4840 | |
| 4841 | // Figure out the right elements kind |
| 4842 | __ movp(rcx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4843 | |
| 4844 | // Load the map's "bit field 2" into |result|. We only need the first byte, |
| 4845 | // but the following masking takes care of that anyway. |
| 4846 | __ movzxbp(rcx, FieldOperand(rcx, Map::kBitField2Offset)); |
| 4847 | // Retrieve elements_kind from bit field 2. |
| 4848 | __ DecodeField<Map::ElementsKindBits>(rcx); |
| 4849 | |
| 4850 | if (FLAG_debug_code) { |
| 4851 | Label done; |
| 4852 | __ cmpl(rcx, Immediate(FAST_ELEMENTS)); |
| 4853 | __ j(equal, &done); |
| 4854 | __ cmpl(rcx, Immediate(FAST_HOLEY_ELEMENTS)); |
| 4855 | __ Assert(equal, |
| 4856 | kInvalidElementsKindForInternalArrayOrInternalPackedArray); |
| 4857 | __ bind(&done); |
| 4858 | } |
| 4859 | |
| 4860 | Label fast_elements_case; |
| 4861 | __ cmpl(rcx, Immediate(FAST_ELEMENTS)); |
| 4862 | __ j(equal, &fast_elements_case); |
| 4863 | GenerateCase(masm, FAST_HOLEY_ELEMENTS); |
| 4864 | |
| 4865 | __ bind(&fast_elements_case); |
| 4866 | GenerateCase(masm, FAST_ELEMENTS); |
| 4867 | } |
| 4868 | |
| 4869 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 4870 | void LoadGlobalViaContextStub::Generate(MacroAssembler* masm) { |
| 4871 | Register context_reg = rsi; |
| 4872 | Register slot_reg = rbx; |
| 4873 | Register result_reg = rax; |
| 4874 | Label slow_case; |
| 4875 | |
| 4876 | // Go up context chain to the script context. |
| 4877 | for (int i = 0; i < depth(); ++i) { |
| 4878 | __ movp(rdi, ContextOperand(context_reg, Context::PREVIOUS_INDEX)); |
| 4879 | context_reg = rdi; |
| 4880 | } |
| 4881 | |
| 4882 | // Load the PropertyCell value at the specified slot. |
| 4883 | __ movp(result_reg, ContextOperand(context_reg, slot_reg)); |
| 4884 | __ movp(result_reg, FieldOperand(result_reg, PropertyCell::kValueOffset)); |
| 4885 | |
| 4886 | // Check that value is not the_hole. |
| 4887 | __ CompareRoot(result_reg, Heap::kTheHoleValueRootIndex); |
| 4888 | __ j(equal, &slow_case, Label::kNear); |
| 4889 | __ Ret(); |
| 4890 | |
| 4891 | // Fallback to the runtime. |
| 4892 | __ bind(&slow_case); |
| 4893 | __ Integer32ToSmi(slot_reg, slot_reg); |
| 4894 | __ PopReturnAddressTo(kScratchRegister); |
| 4895 | __ Push(slot_reg); |
| 4896 | __ Push(kScratchRegister); |
| 4897 | __ TailCallRuntime(Runtime::kLoadGlobalViaContext); |
| 4898 | } |
| 4899 | |
| 4900 | |
| 4901 | void StoreGlobalViaContextStub::Generate(MacroAssembler* masm) { |
| 4902 | Register context_reg = rsi; |
| 4903 | Register slot_reg = rbx; |
| 4904 | Register value_reg = rax; |
| 4905 | Register cell_reg = r8; |
| 4906 | Register cell_details_reg = rdx; |
| 4907 | Register cell_value_reg = r9; |
| 4908 | Label fast_heapobject_case, fast_smi_case, slow_case; |
| 4909 | |
| 4910 | if (FLAG_debug_code) { |
| 4911 | __ CompareRoot(value_reg, Heap::kTheHoleValueRootIndex); |
| 4912 | __ Check(not_equal, kUnexpectedValue); |
| 4913 | } |
| 4914 | |
| 4915 | // Go up context chain to the script context. |
| 4916 | for (int i = 0; i < depth(); ++i) { |
| 4917 | __ movp(rdi, ContextOperand(context_reg, Context::PREVIOUS_INDEX)); |
| 4918 | context_reg = rdi; |
| 4919 | } |
| 4920 | |
| 4921 | // Load the PropertyCell at the specified slot. |
| 4922 | __ movp(cell_reg, ContextOperand(context_reg, slot_reg)); |
| 4923 | |
| 4924 | // Load PropertyDetails for the cell (actually only the cell_type, kind and |
| 4925 | // READ_ONLY bit of attributes). |
| 4926 | __ SmiToInteger32(cell_details_reg, |
| 4927 | FieldOperand(cell_reg, PropertyCell::kDetailsOffset)); |
| 4928 | __ andl(cell_details_reg, |
| 4929 | Immediate(PropertyDetails::PropertyCellTypeField::kMask | |
| 4930 | PropertyDetails::KindField::kMask | |
| 4931 | PropertyDetails::kAttributesReadOnlyMask)); |
| 4932 | |
| 4933 | // Check if PropertyCell holds mutable data. |
| 4934 | Label not_mutable_data; |
| 4935 | __ cmpl(cell_details_reg, |
| 4936 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 4937 | PropertyCellType::kMutable) | |
| 4938 | PropertyDetails::KindField::encode(kData))); |
| 4939 | __ j(not_equal, ¬_mutable_data); |
| 4940 | __ JumpIfSmi(value_reg, &fast_smi_case); |
| 4941 | __ bind(&fast_heapobject_case); |
| 4942 | __ movp(FieldOperand(cell_reg, PropertyCell::kValueOffset), value_reg); |
| 4943 | __ RecordWriteField(cell_reg, PropertyCell::kValueOffset, value_reg, |
| 4944 | cell_value_reg, kDontSaveFPRegs, EMIT_REMEMBERED_SET, |
| 4945 | OMIT_SMI_CHECK); |
| 4946 | // RecordWriteField clobbers the value register, so we need to reload. |
| 4947 | __ movp(value_reg, FieldOperand(cell_reg, PropertyCell::kValueOffset)); |
| 4948 | __ Ret(); |
| 4949 | __ bind(¬_mutable_data); |
| 4950 | |
| 4951 | // Check if PropertyCell value matches the new value (relevant for Constant, |
| 4952 | // ConstantType and Undefined cells). |
| 4953 | Label not_same_value; |
| 4954 | __ movp(cell_value_reg, FieldOperand(cell_reg, PropertyCell::kValueOffset)); |
| 4955 | __ cmpp(cell_value_reg, value_reg); |
| 4956 | __ j(not_equal, ¬_same_value, |
| 4957 | FLAG_debug_code ? Label::kFar : Label::kNear); |
| 4958 | // Make sure the PropertyCell is not marked READ_ONLY. |
| 4959 | __ testl(cell_details_reg, |
| 4960 | Immediate(PropertyDetails::kAttributesReadOnlyMask)); |
| 4961 | __ j(not_zero, &slow_case); |
| 4962 | if (FLAG_debug_code) { |
| 4963 | Label done; |
| 4964 | // This can only be true for Constant, ConstantType and Undefined cells, |
| 4965 | // because we never store the_hole via this stub. |
| 4966 | __ cmpl(cell_details_reg, |
| 4967 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 4968 | PropertyCellType::kConstant) | |
| 4969 | PropertyDetails::KindField::encode(kData))); |
| 4970 | __ j(equal, &done); |
| 4971 | __ cmpl(cell_details_reg, |
| 4972 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 4973 | PropertyCellType::kConstantType) | |
| 4974 | PropertyDetails::KindField::encode(kData))); |
| 4975 | __ j(equal, &done); |
| 4976 | __ cmpl(cell_details_reg, |
| 4977 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 4978 | PropertyCellType::kUndefined) | |
| 4979 | PropertyDetails::KindField::encode(kData))); |
| 4980 | __ Check(equal, kUnexpectedValue); |
| 4981 | __ bind(&done); |
| 4982 | } |
| 4983 | __ Ret(); |
| 4984 | __ bind(¬_same_value); |
| 4985 | |
| 4986 | // Check if PropertyCell contains data with constant type (and is not |
| 4987 | // READ_ONLY). |
| 4988 | __ cmpl(cell_details_reg, |
| 4989 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 4990 | PropertyCellType::kConstantType) | |
| 4991 | PropertyDetails::KindField::encode(kData))); |
| 4992 | __ j(not_equal, &slow_case, Label::kNear); |
| 4993 | |
| 4994 | // Now either both old and new values must be SMIs or both must be heap |
| 4995 | // objects with same map. |
| 4996 | Label value_is_heap_object; |
| 4997 | __ JumpIfNotSmi(value_reg, &value_is_heap_object, Label::kNear); |
| 4998 | __ JumpIfNotSmi(cell_value_reg, &slow_case, Label::kNear); |
| 4999 | // Old and new values are SMIs, no need for a write barrier here. |
| 5000 | __ bind(&fast_smi_case); |
| 5001 | __ movp(FieldOperand(cell_reg, PropertyCell::kValueOffset), value_reg); |
| 5002 | __ Ret(); |
| 5003 | __ bind(&value_is_heap_object); |
| 5004 | __ JumpIfSmi(cell_value_reg, &slow_case, Label::kNear); |
| 5005 | Register cell_value_map_reg = cell_value_reg; |
| 5006 | __ movp(cell_value_map_reg, |
| 5007 | FieldOperand(cell_value_reg, HeapObject::kMapOffset)); |
| 5008 | __ cmpp(cell_value_map_reg, FieldOperand(value_reg, HeapObject::kMapOffset)); |
| 5009 | __ j(equal, &fast_heapobject_case); |
| 5010 | |
| 5011 | // Fallback to the runtime. |
| 5012 | __ bind(&slow_case); |
| 5013 | __ Integer32ToSmi(slot_reg, slot_reg); |
| 5014 | __ PopReturnAddressTo(kScratchRegister); |
| 5015 | __ Push(slot_reg); |
| 5016 | __ Push(value_reg); |
| 5017 | __ Push(kScratchRegister); |
| 5018 | __ TailCallRuntime(is_strict(language_mode()) |
| 5019 | ? Runtime::kStoreGlobalViaContext_Strict |
| 5020 | : Runtime::kStoreGlobalViaContext_Sloppy); |
| 5021 | } |
| 5022 | |
| 5023 | |
| 5024 | static int Offset(ExternalReference ref0, ExternalReference ref1) { |
| 5025 | int64_t offset = (ref0.address() - ref1.address()); |
| 5026 | // Check that fits into int. |
| 5027 | DCHECK(static_cast<int>(offset) == offset); |
| 5028 | return static_cast<int>(offset); |
| 5029 | } |
| 5030 | |
| 5031 | |
| 5032 | // Prepares stack to put arguments (aligns and so on). WIN64 calling |
| 5033 | // convention requires to put the pointer to the return value slot into |
| 5034 | // rcx (rcx must be preserverd until CallApiFunctionAndReturn). Saves |
| 5035 | // context (rsi). Clobbers rax. Allocates arg_stack_space * kPointerSize |
| 5036 | // inside the exit frame (not GCed) accessible via StackSpaceOperand. |
| 5037 | static void PrepareCallApiFunction(MacroAssembler* masm, int arg_stack_space) { |
| 5038 | __ EnterApiExitFrame(arg_stack_space); |
| 5039 | } |
| 5040 | |
| 5041 | |
| 5042 | // Calls an API function. Allocates HandleScope, extracts returned value |
| 5043 | // from handle and propagates exceptions. Clobbers r14, r15, rbx and |
| 5044 | // caller-save registers. Restores context. On return removes |
| 5045 | // stack_space * kPointerSize (GCed). |
| 5046 | static void CallApiFunctionAndReturn(MacroAssembler* masm, |
| 5047 | Register function_address, |
| 5048 | ExternalReference thunk_ref, |
| 5049 | Register thunk_last_arg, int stack_space, |
| 5050 | Operand* stack_space_operand, |
| 5051 | Operand return_value_operand, |
| 5052 | Operand* context_restore_operand) { |
| 5053 | Label prologue; |
| 5054 | Label promote_scheduled_exception; |
| 5055 | Label delete_allocated_handles; |
| 5056 | Label leave_exit_frame; |
| 5057 | Label write_back; |
| 5058 | |
| 5059 | Isolate* isolate = masm->isolate(); |
| 5060 | Factory* factory = isolate->factory(); |
| 5061 | ExternalReference next_address = |
| 5062 | ExternalReference::handle_scope_next_address(isolate); |
| 5063 | const int kNextOffset = 0; |
| 5064 | const int kLimitOffset = Offset( |
| 5065 | ExternalReference::handle_scope_limit_address(isolate), next_address); |
| 5066 | const int kLevelOffset = Offset( |
| 5067 | ExternalReference::handle_scope_level_address(isolate), next_address); |
| 5068 | ExternalReference scheduled_exception_address = |
| 5069 | ExternalReference::scheduled_exception_address(isolate); |
| 5070 | |
| 5071 | DCHECK(rdx.is(function_address) || r8.is(function_address)); |
| 5072 | // Allocate HandleScope in callee-save registers. |
| 5073 | Register prev_next_address_reg = r14; |
| 5074 | Register prev_limit_reg = rbx; |
| 5075 | Register base_reg = r15; |
| 5076 | __ Move(base_reg, next_address); |
| 5077 | __ movp(prev_next_address_reg, Operand(base_reg, kNextOffset)); |
| 5078 | __ movp(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 5079 | __ addl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 5080 | |
| 5081 | if (FLAG_log_timer_events) { |
| 5082 | FrameScope frame(masm, StackFrame::MANUAL); |
| 5083 | __ PushSafepointRegisters(); |
| 5084 | __ PrepareCallCFunction(1); |
| 5085 | __ LoadAddress(arg_reg_1, ExternalReference::isolate_address(isolate)); |
| 5086 | __ CallCFunction(ExternalReference::log_enter_external_function(isolate), |
| 5087 | 1); |
| 5088 | __ PopSafepointRegisters(); |
| 5089 | } |
| 5090 | |
| 5091 | Label profiler_disabled; |
| 5092 | Label end_profiler_check; |
| 5093 | __ Move(rax, ExternalReference::is_profiling_address(isolate)); |
| 5094 | __ cmpb(Operand(rax, 0), Immediate(0)); |
| 5095 | __ j(zero, &profiler_disabled); |
| 5096 | |
| 5097 | // Third parameter is the address of the actual getter function. |
| 5098 | __ Move(thunk_last_arg, function_address); |
| 5099 | __ Move(rax, thunk_ref); |
| 5100 | __ jmp(&end_profiler_check); |
| 5101 | |
| 5102 | __ bind(&profiler_disabled); |
| 5103 | // Call the api function! |
| 5104 | __ Move(rax, function_address); |
| 5105 | |
| 5106 | __ bind(&end_profiler_check); |
| 5107 | |
| 5108 | // Call the api function! |
| 5109 | __ call(rax); |
| 5110 | |
| 5111 | if (FLAG_log_timer_events) { |
| 5112 | FrameScope frame(masm, StackFrame::MANUAL); |
| 5113 | __ PushSafepointRegisters(); |
| 5114 | __ PrepareCallCFunction(1); |
| 5115 | __ LoadAddress(arg_reg_1, ExternalReference::isolate_address(isolate)); |
| 5116 | __ CallCFunction(ExternalReference::log_leave_external_function(isolate), |
| 5117 | 1); |
| 5118 | __ PopSafepointRegisters(); |
| 5119 | } |
| 5120 | |
| 5121 | // Load the value from ReturnValue |
| 5122 | __ movp(rax, return_value_operand); |
| 5123 | __ bind(&prologue); |
| 5124 | |
| 5125 | // No more valid handles (the result handle was the last one). Restore |
| 5126 | // previous handle scope. |
| 5127 | __ subl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 5128 | __ movp(Operand(base_reg, kNextOffset), prev_next_address_reg); |
| 5129 | __ cmpp(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 5130 | __ j(not_equal, &delete_allocated_handles); |
| 5131 | |
| 5132 | // Leave the API exit frame. |
| 5133 | __ bind(&leave_exit_frame); |
| 5134 | bool restore_context = context_restore_operand != NULL; |
| 5135 | if (restore_context) { |
| 5136 | __ movp(rsi, *context_restore_operand); |
| 5137 | } |
| 5138 | if (stack_space_operand != nullptr) { |
| 5139 | __ movp(rbx, *stack_space_operand); |
| 5140 | } |
| 5141 | __ LeaveApiExitFrame(!restore_context); |
| 5142 | |
| 5143 | // Check if the function scheduled an exception. |
| 5144 | __ Move(rdi, scheduled_exception_address); |
| 5145 | __ Cmp(Operand(rdi, 0), factory->the_hole_value()); |
| 5146 | __ j(not_equal, &promote_scheduled_exception); |
| 5147 | |
| 5148 | #if DEBUG |
| 5149 | // Check if the function returned a valid JavaScript value. |
| 5150 | Label ok; |
| 5151 | Register return_value = rax; |
| 5152 | Register map = rcx; |
| 5153 | |
| 5154 | __ JumpIfSmi(return_value, &ok, Label::kNear); |
| 5155 | __ movp(map, FieldOperand(return_value, HeapObject::kMapOffset)); |
| 5156 | |
| 5157 | __ CmpInstanceType(map, LAST_NAME_TYPE); |
| 5158 | __ j(below_equal, &ok, Label::kNear); |
| 5159 | |
| 5160 | __ CmpInstanceType(map, FIRST_JS_RECEIVER_TYPE); |
| 5161 | __ j(above_equal, &ok, Label::kNear); |
| 5162 | |
| 5163 | __ CompareRoot(map, Heap::kHeapNumberMapRootIndex); |
| 5164 | __ j(equal, &ok, Label::kNear); |
| 5165 | |
| 5166 | __ CompareRoot(return_value, Heap::kUndefinedValueRootIndex); |
| 5167 | __ j(equal, &ok, Label::kNear); |
| 5168 | |
| 5169 | __ CompareRoot(return_value, Heap::kTrueValueRootIndex); |
| 5170 | __ j(equal, &ok, Label::kNear); |
| 5171 | |
| 5172 | __ CompareRoot(return_value, Heap::kFalseValueRootIndex); |
| 5173 | __ j(equal, &ok, Label::kNear); |
| 5174 | |
| 5175 | __ CompareRoot(return_value, Heap::kNullValueRootIndex); |
| 5176 | __ j(equal, &ok, Label::kNear); |
| 5177 | |
| 5178 | __ Abort(kAPICallReturnedInvalidObject); |
| 5179 | |
| 5180 | __ bind(&ok); |
| 5181 | #endif |
| 5182 | |
| 5183 | if (stack_space_operand != nullptr) { |
| 5184 | DCHECK_EQ(stack_space, 0); |
| 5185 | __ PopReturnAddressTo(rcx); |
| 5186 | __ addq(rsp, rbx); |
| 5187 | __ jmp(rcx); |
| 5188 | } else { |
| 5189 | __ ret(stack_space * kPointerSize); |
| 5190 | } |
| 5191 | |
| 5192 | // Re-throw by promoting a scheduled exception. |
| 5193 | __ bind(&promote_scheduled_exception); |
| 5194 | __ TailCallRuntime(Runtime::kPromoteScheduledException); |
| 5195 | |
| 5196 | // HandleScope limit has changed. Delete allocated extensions. |
| 5197 | __ bind(&delete_allocated_handles); |
| 5198 | __ movp(Operand(base_reg, kLimitOffset), prev_limit_reg); |
| 5199 | __ movp(prev_limit_reg, rax); |
| 5200 | __ LoadAddress(arg_reg_1, ExternalReference::isolate_address(isolate)); |
| 5201 | __ LoadAddress(rax, |
| 5202 | ExternalReference::delete_handle_scope_extensions(isolate)); |
| 5203 | __ call(rax); |
| 5204 | __ movp(rax, prev_limit_reg); |
| 5205 | __ jmp(&leave_exit_frame); |
| 5206 | } |
| 5207 | |
| 5208 | |
| 5209 | static void CallApiFunctionStubHelper(MacroAssembler* masm, |
| 5210 | const ParameterCount& argc, |
| 5211 | bool return_first_arg, |
| 5212 | bool call_data_undefined) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5213 | // ----------- S t a t e ------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5214 | // -- rdi : callee |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5215 | // -- rbx : call_data |
| 5216 | // -- rcx : holder |
| 5217 | // -- rdx : api_function_address |
| 5218 | // -- rsi : context |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5219 | // -- rax : number of arguments if argc is a register |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5220 | // -- rsp[0] : return address |
| 5221 | // -- rsp[8] : last argument |
| 5222 | // -- ... |
| 5223 | // -- rsp[argc * 8] : first argument |
| 5224 | // -- rsp[(argc + 1) * 8] : receiver |
| 5225 | // ----------------------------------- |
| 5226 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5227 | Register callee = rdi; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5228 | Register call_data = rbx; |
| 5229 | Register holder = rcx; |
| 5230 | Register api_function_address = rdx; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5231 | Register context = rsi; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5232 | Register return_address = r8; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5233 | |
| 5234 | typedef FunctionCallbackArguments FCA; |
| 5235 | |
| 5236 | STATIC_ASSERT(FCA::kContextSaveIndex == 6); |
| 5237 | STATIC_ASSERT(FCA::kCalleeIndex == 5); |
| 5238 | STATIC_ASSERT(FCA::kDataIndex == 4); |
| 5239 | STATIC_ASSERT(FCA::kReturnValueOffset == 3); |
| 5240 | STATIC_ASSERT(FCA::kReturnValueDefaultValueIndex == 2); |
| 5241 | STATIC_ASSERT(FCA::kIsolateIndex == 1); |
| 5242 | STATIC_ASSERT(FCA::kHolderIndex == 0); |
| 5243 | STATIC_ASSERT(FCA::kArgsLength == 7); |
| 5244 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5245 | DCHECK(argc.is_immediate() || rax.is(argc.reg())); |
| 5246 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5247 | __ PopReturnAddressTo(return_address); |
| 5248 | |
| 5249 | // context save |
| 5250 | __ Push(context); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5251 | |
| 5252 | // callee |
| 5253 | __ Push(callee); |
| 5254 | |
| 5255 | // call data |
| 5256 | __ Push(call_data); |
| 5257 | Register scratch = call_data; |
| 5258 | if (!call_data_undefined) { |
| 5259 | __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 5260 | } |
| 5261 | // return value |
| 5262 | __ Push(scratch); |
| 5263 | // return value default |
| 5264 | __ Push(scratch); |
| 5265 | // isolate |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5266 | __ Move(scratch, ExternalReference::isolate_address(masm->isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5267 | __ Push(scratch); |
| 5268 | // holder |
| 5269 | __ Push(holder); |
| 5270 | |
| 5271 | __ movp(scratch, rsp); |
| 5272 | // Push return address back on stack. |
| 5273 | __ PushReturnAddressFrom(return_address); |
| 5274 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5275 | // load context from callee |
| 5276 | __ movp(context, FieldOperand(callee, JSFunction::kContextOffset)); |
| 5277 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5278 | // Allocate the v8::Arguments structure in the arguments' space since |
| 5279 | // it's not controlled by GC. |
| 5280 | const int kApiStackSpace = 4; |
| 5281 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5282 | PrepareCallApiFunction(masm, kApiStackSpace); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5283 | |
| 5284 | // FunctionCallbackInfo::implicit_args_. |
| 5285 | __ movp(StackSpaceOperand(0), scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5286 | if (argc.is_immediate()) { |
| 5287 | __ addp(scratch, Immediate((argc.immediate() + FCA::kArgsLength - 1) * |
| 5288 | kPointerSize)); |
| 5289 | // FunctionCallbackInfo::values_. |
| 5290 | __ movp(StackSpaceOperand(1), scratch); |
| 5291 | // FunctionCallbackInfo::length_. |
| 5292 | __ Set(StackSpaceOperand(2), argc.immediate()); |
| 5293 | // FunctionCallbackInfo::is_construct_call_. |
| 5294 | __ Set(StackSpaceOperand(3), 0); |
| 5295 | } else { |
| 5296 | __ leap(scratch, Operand(scratch, argc.reg(), times_pointer_size, |
| 5297 | (FCA::kArgsLength - 1) * kPointerSize)); |
| 5298 | // FunctionCallbackInfo::values_. |
| 5299 | __ movp(StackSpaceOperand(1), scratch); |
| 5300 | // FunctionCallbackInfo::length_. |
| 5301 | __ movp(StackSpaceOperand(2), argc.reg()); |
| 5302 | // FunctionCallbackInfo::is_construct_call_. |
| 5303 | __ leap(argc.reg(), Operand(argc.reg(), times_pointer_size, |
| 5304 | (FCA::kArgsLength + 1) * kPointerSize)); |
| 5305 | __ movp(StackSpaceOperand(3), argc.reg()); |
| 5306 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5307 | |
| 5308 | #if defined(__MINGW64__) || defined(_WIN64) |
| 5309 | Register arguments_arg = rcx; |
| 5310 | Register callback_arg = rdx; |
| 5311 | #else |
| 5312 | Register arguments_arg = rdi; |
| 5313 | Register callback_arg = rsi; |
| 5314 | #endif |
| 5315 | |
| 5316 | // It's okay if api_function_address == callback_arg |
| 5317 | // but not arguments_arg |
| 5318 | DCHECK(!api_function_address.is(arguments_arg)); |
| 5319 | |
| 5320 | // v8::InvocationCallback's argument. |
| 5321 | __ leap(arguments_arg, StackSpaceOperand(0)); |
| 5322 | |
| 5323 | ExternalReference thunk_ref = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5324 | ExternalReference::invoke_function_callback(masm->isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5325 | |
| 5326 | // Accessor for FunctionCallbackInfo and first js arg. |
| 5327 | StackArgumentsAccessor args_from_rbp(rbp, FCA::kArgsLength + 1, |
| 5328 | ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 5329 | Operand context_restore_operand = args_from_rbp.GetArgumentOperand( |
| 5330 | FCA::kArgsLength - FCA::kContextSaveIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5331 | Operand is_construct_call_operand = StackSpaceOperand(3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5332 | Operand return_value_operand = args_from_rbp.GetArgumentOperand( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5333 | return_first_arg ? 0 : FCA::kArgsLength - FCA::kReturnValueOffset); |
| 5334 | int stack_space = 0; |
| 5335 | Operand* stack_space_operand = &is_construct_call_operand; |
| 5336 | if (argc.is_immediate()) { |
| 5337 | stack_space = argc.immediate() + FCA::kArgsLength + 1; |
| 5338 | stack_space_operand = nullptr; |
| 5339 | } |
| 5340 | CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, callback_arg, |
| 5341 | stack_space, stack_space_operand, |
| 5342 | return_value_operand, &context_restore_operand); |
| 5343 | } |
| 5344 | |
| 5345 | |
| 5346 | void CallApiFunctionStub::Generate(MacroAssembler* masm) { |
| 5347 | bool call_data_undefined = this->call_data_undefined(); |
| 5348 | CallApiFunctionStubHelper(masm, ParameterCount(rax), false, |
| 5349 | call_data_undefined); |
| 5350 | } |
| 5351 | |
| 5352 | |
| 5353 | void CallApiAccessorStub::Generate(MacroAssembler* masm) { |
| 5354 | bool is_store = this->is_store(); |
| 5355 | int argc = this->argc(); |
| 5356 | bool call_data_undefined = this->call_data_undefined(); |
| 5357 | CallApiFunctionStubHelper(masm, ParameterCount(argc), is_store, |
| 5358 | call_data_undefined); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5359 | } |
| 5360 | |
| 5361 | |
| 5362 | void CallApiGetterStub::Generate(MacroAssembler* masm) { |
| 5363 | // ----------- S t a t e ------------- |
| 5364 | // -- rsp[0] : return address |
| 5365 | // -- rsp[8] : name |
| 5366 | // -- rsp[16 - kArgsLength*8] : PropertyCallbackArguments object |
| 5367 | // -- ... |
| 5368 | // -- r8 : api_function_address |
| 5369 | // ----------------------------------- |
| 5370 | |
| 5371 | #if defined(__MINGW64__) || defined(_WIN64) |
| 5372 | Register getter_arg = r8; |
| 5373 | Register accessor_info_arg = rdx; |
| 5374 | Register name_arg = rcx; |
| 5375 | #else |
| 5376 | Register getter_arg = rdx; |
| 5377 | Register accessor_info_arg = rsi; |
| 5378 | Register name_arg = rdi; |
| 5379 | #endif |
| 5380 | Register api_function_address = ApiGetterDescriptor::function_address(); |
| 5381 | DCHECK(api_function_address.is(r8)); |
| 5382 | Register scratch = rax; |
| 5383 | |
| 5384 | // v8::Arguments::values_ and handler for name. |
| 5385 | const int kStackSpace = PropertyCallbackArguments::kArgsLength + 1; |
| 5386 | |
| 5387 | // Allocate v8::AccessorInfo in non-GCed stack space. |
| 5388 | const int kArgStackSpace = 1; |
| 5389 | |
| 5390 | __ leap(name_arg, Operand(rsp, kPCOnStackSize)); |
| 5391 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5392 | PrepareCallApiFunction(masm, kArgStackSpace); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5393 | __ leap(scratch, Operand(name_arg, 1 * kPointerSize)); |
| 5394 | |
| 5395 | // v8::PropertyAccessorInfo::args_. |
| 5396 | __ movp(StackSpaceOperand(0), scratch); |
| 5397 | |
| 5398 | // The context register (rsi) has been saved in PrepareCallApiFunction and |
| 5399 | // could be used to pass arguments. |
| 5400 | __ leap(accessor_info_arg, StackSpaceOperand(0)); |
| 5401 | |
| 5402 | ExternalReference thunk_ref = |
| 5403 | ExternalReference::invoke_accessor_getter_callback(isolate()); |
| 5404 | |
| 5405 | // It's okay if api_function_address == getter_arg |
| 5406 | // but not accessor_info_arg or name_arg |
| 5407 | DCHECK(!api_function_address.is(accessor_info_arg) && |
| 5408 | !api_function_address.is(name_arg)); |
| 5409 | |
| 5410 | // The name handler is counted as an argument. |
| 5411 | StackArgumentsAccessor args(rbp, PropertyCallbackArguments::kArgsLength); |
| 5412 | Operand return_value_operand = args.GetArgumentOperand( |
| 5413 | PropertyCallbackArguments::kArgsLength - 1 - |
| 5414 | PropertyCallbackArguments::kReturnValueOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5415 | CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, getter_arg, |
| 5416 | kStackSpace, nullptr, return_value_operand, NULL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5417 | } |
| 5418 | |
| 5419 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 5420 | #undef __ |
| 5421 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5422 | } // namespace internal |
| 5423 | } // namespace v8 |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 5424 | |
| 5425 | #endif // V8_TARGET_ARCH_X64 |