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/code-stubs.h" |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 8 | #include "src/api-arguments.h" |
| 9 | #include "src/bootstrapper.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 10 | #include "src/codegen.h" |
| 11 | #include "src/ic/handler-compiler.h" |
| 12 | #include "src/ic/ic.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 13 | #include "src/ic/stub-cache.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 14 | #include "src/isolate.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 15 | #include "src/regexp/jsregexp.h" |
| 16 | #include "src/regexp/regexp-macro-assembler.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 17 | #include "src/runtime/runtime.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 18 | #include "src/x64/code-stubs-x64.h" |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 19 | |
| 20 | namespace v8 { |
| 21 | namespace internal { |
| 22 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 23 | |
| 24 | static void InitializeArrayConstructorDescriptor( |
| 25 | Isolate* isolate, CodeStubDescriptor* descriptor, |
| 26 | int constant_stack_parameter_count) { |
| 27 | Address deopt_handler = Runtime::FunctionForId( |
| 28 | Runtime::kArrayConstructor)->entry; |
| 29 | |
| 30 | if (constant_stack_parameter_count == 0) { |
| 31 | descriptor->Initialize(deopt_handler, constant_stack_parameter_count, |
| 32 | JS_FUNCTION_STUB_MODE); |
| 33 | } else { |
| 34 | descriptor->Initialize(rax, deopt_handler, constant_stack_parameter_count, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 35 | JS_FUNCTION_STUB_MODE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 36 | } |
| 37 | } |
| 38 | |
| 39 | |
| 40 | static void InitializeInternalArrayConstructorDescriptor( |
| 41 | Isolate* isolate, CodeStubDescriptor* descriptor, |
| 42 | int constant_stack_parameter_count) { |
| 43 | Address deopt_handler = Runtime::FunctionForId( |
| 44 | Runtime::kInternalArrayConstructor)->entry; |
| 45 | |
| 46 | if (constant_stack_parameter_count == 0) { |
| 47 | descriptor->Initialize(deopt_handler, constant_stack_parameter_count, |
| 48 | JS_FUNCTION_STUB_MODE); |
| 49 | } else { |
| 50 | descriptor->Initialize(rax, deopt_handler, constant_stack_parameter_count, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 51 | JS_FUNCTION_STUB_MODE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 52 | } |
| 53 | } |
| 54 | |
| 55 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 56 | void ArraySingleArgumentConstructorStub::InitializeDescriptor( |
| 57 | CodeStubDescriptor* descriptor) { |
| 58 | InitializeArrayConstructorDescriptor(isolate(), descriptor, 1); |
| 59 | } |
| 60 | |
| 61 | |
| 62 | void ArrayNArgumentsConstructorStub::InitializeDescriptor( |
| 63 | CodeStubDescriptor* descriptor) { |
| 64 | InitializeArrayConstructorDescriptor(isolate(), descriptor, -1); |
| 65 | } |
| 66 | |
| 67 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 68 | void FastArrayPushStub::InitializeDescriptor(CodeStubDescriptor* descriptor) { |
| 69 | Address deopt_handler = Runtime::FunctionForId(Runtime::kArrayPush)->entry; |
| 70 | descriptor->Initialize(rax, deopt_handler, -1, JS_FUNCTION_STUB_MODE); |
| 71 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 72 | |
| 73 | void InternalArraySingleArgumentConstructorStub::InitializeDescriptor( |
| 74 | CodeStubDescriptor* descriptor) { |
| 75 | InitializeInternalArrayConstructorDescriptor(isolate(), descriptor, 1); |
| 76 | } |
| 77 | |
| 78 | |
| 79 | void InternalArrayNArgumentsConstructorStub::InitializeDescriptor( |
| 80 | CodeStubDescriptor* descriptor) { |
| 81 | InitializeInternalArrayConstructorDescriptor(isolate(), descriptor, -1); |
| 82 | } |
| 83 | |
| 84 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 85 | #define __ ACCESS_MASM(masm) |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 86 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 87 | |
| 88 | void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm, |
| 89 | ExternalReference miss) { |
| 90 | // Update the static counter each time a new code stub is generated. |
| 91 | isolate()->counters()->code_stubs()->Increment(); |
| 92 | |
| 93 | CallInterfaceDescriptor descriptor = GetCallInterfaceDescriptor(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 94 | int param_count = descriptor.GetRegisterParameterCount(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 95 | { |
| 96 | // Call the runtime system in a fresh internal frame. |
| 97 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 98 | DCHECK(param_count == 0 || |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 99 | rax.is(descriptor.GetRegisterParameter(param_count - 1))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 100 | // Push arguments |
| 101 | for (int i = 0; i < param_count; ++i) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 102 | __ Push(descriptor.GetRegisterParameter(i)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 103 | } |
| 104 | __ CallExternalReference(miss, param_count); |
| 105 | } |
| 106 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 107 | __ Ret(); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 111 | void StoreBufferOverflowStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 112 | __ PushCallerSaved(save_doubles() ? kSaveFPRegs : kDontSaveFPRegs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 113 | const int argument_count = 1; |
| 114 | __ PrepareCallCFunction(argument_count); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 115 | __ LoadAddress(arg_reg_1, |
| 116 | ExternalReference::isolate_address(isolate())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 117 | |
| 118 | AllowExternalCallThatCantCauseGC scope(masm); |
| 119 | __ CallCFunction( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 120 | ExternalReference::store_buffer_overflow_function(isolate()), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 121 | argument_count); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 122 | __ PopCallerSaved(save_doubles() ? kSaveFPRegs : kDontSaveFPRegs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 123 | __ ret(0); |
| 124 | } |
| 125 | |
| 126 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 127 | class FloatingPointHelper : public AllStatic { |
| 128 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 129 | enum ConvertUndefined { |
| 130 | CONVERT_UNDEFINED_TO_ZERO, |
| 131 | BAILOUT_ON_UNDEFINED |
| 132 | }; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 133 | // Load the operands from rdx and rax into xmm0 and xmm1, as doubles. |
| 134 | // If the operands are not both numbers, jump to not_numbers. |
| 135 | // Leaves rdx and rax unchanged. SmiOperands assumes both are smis. |
| 136 | // NumberOperands assumes both are smis or heap numbers. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 137 | static void LoadSSE2UnknownOperands(MacroAssembler* masm, |
| 138 | Label* not_numbers); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 139 | }; |
| 140 | |
| 141 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 142 | void DoubleToIStub::Generate(MacroAssembler* masm) { |
| 143 | Register input_reg = this->source(); |
| 144 | Register final_result_reg = this->destination(); |
| 145 | DCHECK(is_truncating()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 146 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 147 | Label check_negative, process_64_bits, done; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 148 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 149 | int double_offset = offset(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 150 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 151 | // Account for return address and saved regs if input is rsp. |
| 152 | if (input_reg.is(rsp)) double_offset += 3 * kRegisterSize; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 153 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 154 | MemOperand mantissa_operand(MemOperand(input_reg, double_offset)); |
| 155 | MemOperand exponent_operand(MemOperand(input_reg, |
| 156 | double_offset + kDoubleSize / 2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 157 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 158 | Register scratch1; |
| 159 | Register scratch_candidates[3] = { rbx, rdx, rdi }; |
| 160 | for (int i = 0; i < 3; i++) { |
| 161 | scratch1 = scratch_candidates[i]; |
| 162 | if (!final_result_reg.is(scratch1) && !input_reg.is(scratch1)) break; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 163 | } |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 164 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 165 | // Since we must use rcx for shifts below, use some other register (rax) |
| 166 | // to calculate the result if ecx is the requested return register. |
| 167 | Register result_reg = final_result_reg.is(rcx) ? rax : final_result_reg; |
| 168 | // Save ecx if it isn't the return register and therefore volatile, or if it |
| 169 | // is the return register, then save the temp register we use in its stead |
| 170 | // for the result. |
| 171 | Register save_reg = final_result_reg.is(rcx) ? rax : rcx; |
| 172 | __ pushq(scratch1); |
| 173 | __ pushq(save_reg); |
| 174 | |
| 175 | bool stash_exponent_copy = !input_reg.is(rsp); |
| 176 | __ movl(scratch1, mantissa_operand); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 177 | __ Movsd(xmm0, mantissa_operand); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 178 | __ movl(rcx, exponent_operand); |
| 179 | if (stash_exponent_copy) __ pushq(rcx); |
| 180 | |
| 181 | __ andl(rcx, Immediate(HeapNumber::kExponentMask)); |
| 182 | __ shrl(rcx, Immediate(HeapNumber::kExponentShift)); |
| 183 | __ leal(result_reg, MemOperand(rcx, -HeapNumber::kExponentBias)); |
| 184 | __ cmpl(result_reg, Immediate(HeapNumber::kMantissaBits)); |
| 185 | __ j(below, &process_64_bits); |
| 186 | |
| 187 | // Result is entirely in lower 32-bits of mantissa |
| 188 | int delta = HeapNumber::kExponentBias + Double::kPhysicalSignificandSize; |
| 189 | __ subl(rcx, Immediate(delta)); |
| 190 | __ xorl(result_reg, result_reg); |
| 191 | __ cmpl(rcx, Immediate(31)); |
| 192 | __ j(above, &done); |
| 193 | __ shll_cl(scratch1); |
| 194 | __ jmp(&check_negative); |
| 195 | |
| 196 | __ bind(&process_64_bits); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 197 | __ Cvttsd2siq(result_reg, xmm0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 198 | __ jmp(&done, Label::kNear); |
| 199 | |
| 200 | // If the double was negative, negate the integer result. |
| 201 | __ bind(&check_negative); |
| 202 | __ movl(result_reg, scratch1); |
| 203 | __ negl(result_reg); |
| 204 | if (stash_exponent_copy) { |
| 205 | __ cmpl(MemOperand(rsp, 0), Immediate(0)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 206 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 207 | __ cmpl(exponent_operand, Immediate(0)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 208 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 209 | __ cmovl(greater, result_reg, scratch1); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 210 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 211 | // Restore registers |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 212 | __ bind(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 213 | if (stash_exponent_copy) { |
| 214 | __ addp(rsp, Immediate(kDoubleSize)); |
| 215 | } |
| 216 | if (!final_result_reg.is(result_reg)) { |
| 217 | DCHECK(final_result_reg.is(rcx)); |
| 218 | __ movl(final_result_reg, result_reg); |
| 219 | } |
| 220 | __ popq(save_reg); |
| 221 | __ popq(scratch1); |
| 222 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | |
| 226 | void FloatingPointHelper::LoadSSE2UnknownOperands(MacroAssembler* masm, |
| 227 | Label* not_numbers) { |
| 228 | Label load_smi_rdx, load_nonsmi_rax, load_smi_rax, load_float_rax, done; |
| 229 | // Load operand in rdx into xmm0, or branch to not_numbers. |
| 230 | __ LoadRoot(rcx, Heap::kHeapNumberMapRootIndex); |
| 231 | __ JumpIfSmi(rdx, &load_smi_rdx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 232 | __ cmpp(FieldOperand(rdx, HeapObject::kMapOffset), rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 233 | __ j(not_equal, not_numbers); // Argument in rdx is not a number. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 234 | __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 235 | // Load operand in rax into xmm1, or branch to not_numbers. |
| 236 | __ JumpIfSmi(rax, &load_smi_rax); |
| 237 | |
| 238 | __ bind(&load_nonsmi_rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 239 | __ cmpp(FieldOperand(rax, HeapObject::kMapOffset), rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 240 | __ j(not_equal, not_numbers); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 241 | __ Movsd(xmm1, FieldOperand(rax, HeapNumber::kValueOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 242 | __ jmp(&done); |
| 243 | |
| 244 | __ bind(&load_smi_rdx); |
| 245 | __ SmiToInteger32(kScratchRegister, rdx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 246 | __ Cvtlsi2sd(xmm0, kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 247 | __ JumpIfNotSmi(rax, &load_nonsmi_rax); |
| 248 | |
| 249 | __ bind(&load_smi_rax); |
| 250 | __ SmiToInteger32(kScratchRegister, rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 251 | __ Cvtlsi2sd(xmm1, kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 252 | __ bind(&done); |
| 253 | } |
| 254 | |
| 255 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 256 | void MathPowStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 257 | const Register exponent = MathPowTaggedDescriptor::exponent(); |
| 258 | DCHECK(exponent.is(rdx)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 259 | const Register base = rax; |
| 260 | const Register scratch = rcx; |
| 261 | const XMMRegister double_result = xmm3; |
| 262 | const XMMRegister double_base = xmm2; |
| 263 | const XMMRegister double_exponent = xmm1; |
| 264 | const XMMRegister double_scratch = xmm4; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 265 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 266 | Label call_runtime, done, exponent_not_smi, int_exponent; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 267 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 268 | // Save 1 in double_result - we need this several times later on. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 269 | __ movp(scratch, Immediate(1)); |
| 270 | __ Cvtlsi2sd(double_result, scratch); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 271 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 272 | if (exponent_type() == ON_STACK) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 273 | Label base_is_smi, unpack_exponent; |
| 274 | // The exponent and base are supplied as arguments on the stack. |
| 275 | // This can only happen if the stub is called from non-optimized code. |
| 276 | // Load input parameters from stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 277 | StackArgumentsAccessor args(rsp, 2, ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 278 | __ movp(base, args.GetArgumentOperand(0)); |
| 279 | __ movp(exponent, args.GetArgumentOperand(1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 280 | __ JumpIfSmi(base, &base_is_smi, Label::kNear); |
| 281 | __ CompareRoot(FieldOperand(base, HeapObject::kMapOffset), |
| 282 | Heap::kHeapNumberMapRootIndex); |
| 283 | __ j(not_equal, &call_runtime); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 284 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 285 | __ Movsd(double_base, FieldOperand(base, HeapNumber::kValueOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 286 | __ jmp(&unpack_exponent, Label::kNear); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 287 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 288 | __ bind(&base_is_smi); |
| 289 | __ SmiToInteger32(base, base); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 290 | __ Cvtlsi2sd(double_base, base); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 291 | __ bind(&unpack_exponent); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 292 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 293 | __ JumpIfNotSmi(exponent, &exponent_not_smi, Label::kNear); |
| 294 | __ SmiToInteger32(exponent, exponent); |
| 295 | __ jmp(&int_exponent); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 296 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 297 | __ bind(&exponent_not_smi); |
| 298 | __ CompareRoot(FieldOperand(exponent, HeapObject::kMapOffset), |
| 299 | Heap::kHeapNumberMapRootIndex); |
| 300 | __ j(not_equal, &call_runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 301 | __ Movsd(double_exponent, FieldOperand(exponent, HeapNumber::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | } else if (exponent_type() == TAGGED) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 303 | __ JumpIfNotSmi(exponent, &exponent_not_smi, Label::kNear); |
| 304 | __ SmiToInteger32(exponent, exponent); |
| 305 | __ jmp(&int_exponent); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 306 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 307 | __ bind(&exponent_not_smi); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 308 | __ Movsd(double_exponent, FieldOperand(exponent, HeapNumber::kValueOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 309 | } |
| 310 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 311 | if (exponent_type() != INTEGER) { |
| 312 | Label fast_power, try_arithmetic_simplification; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 313 | // Detect integer exponents stored as double. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 314 | __ DoubleToI(exponent, double_exponent, double_scratch, |
| 315 | TREAT_MINUS_ZERO_AS_ZERO, &try_arithmetic_simplification, |
| 316 | &try_arithmetic_simplification, |
| 317 | &try_arithmetic_simplification); |
| 318 | __ jmp(&int_exponent); |
| 319 | |
| 320 | __ bind(&try_arithmetic_simplification); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 321 | __ Cvttsd2si(exponent, double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 322 | // Skip to runtime if possibly NaN (indicated by the indefinite integer). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 323 | __ cmpl(exponent, Immediate(0x1)); |
| 324 | __ j(overflow, &call_runtime); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 325 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 326 | if (exponent_type() == ON_STACK) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 327 | // Detect square root case. Crankshaft detects constant +/-0.5 at |
| 328 | // compile time and uses DoMathPowHalf instead. We then skip this check |
| 329 | // for non-constant cases of +/-0.5 as these hardly occur. |
| 330 | Label continue_sqrt, continue_rsqrt, not_plus_half; |
| 331 | // Test for 0.5. |
| 332 | // Load double_scratch with 0.5. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 333 | __ movq(scratch, V8_UINT64_C(0x3FE0000000000000)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 334 | __ Movq(double_scratch, scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 335 | // Already ruled out NaNs for exponent. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 336 | __ Ucomisd(double_scratch, double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 337 | __ j(not_equal, ¬_plus_half, Label::kNear); |
| 338 | |
| 339 | // Calculates square root of base. Check for the special case of |
| 340 | // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13). |
| 341 | // According to IEEE-754, double-precision -Infinity has the highest |
| 342 | // 12 bits set and the lowest 52 bits cleared. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 343 | __ movq(scratch, V8_UINT64_C(0xFFF0000000000000)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 344 | __ Movq(double_scratch, scratch); |
| 345 | __ Ucomisd(double_scratch, double_base); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 346 | // Comparing -Infinity with NaN results in "unordered", which sets the |
| 347 | // zero flag as if both were equal. However, it also sets the carry flag. |
| 348 | __ j(not_equal, &continue_sqrt, Label::kNear); |
| 349 | __ j(carry, &continue_sqrt, Label::kNear); |
| 350 | |
| 351 | // Set result to Infinity in the special case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 352 | __ Xorpd(double_result, double_result); |
| 353 | __ Subsd(double_result, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 354 | __ jmp(&done); |
| 355 | |
| 356 | __ bind(&continue_sqrt); |
| 357 | // sqrtsd returns -0 when input is -0. ECMA spec requires +0. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 358 | __ Xorpd(double_scratch, double_scratch); |
| 359 | __ Addsd(double_scratch, double_base); // Convert -0 to 0. |
| 360 | __ Sqrtsd(double_result, double_scratch); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 361 | __ jmp(&done); |
| 362 | |
| 363 | // Test for -0.5. |
| 364 | __ bind(¬_plus_half); |
| 365 | // Load double_scratch with -0.5 by substracting 1. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 366 | __ Subsd(double_scratch, double_result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 367 | // Already ruled out NaNs for exponent. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 368 | __ Ucomisd(double_scratch, double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 369 | __ j(not_equal, &fast_power, Label::kNear); |
| 370 | |
| 371 | // Calculates reciprocal of square root of base. Check for the special |
| 372 | // case of Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13). |
| 373 | // According to IEEE-754, double-precision -Infinity has the highest |
| 374 | // 12 bits set and the lowest 52 bits cleared. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 375 | __ movq(scratch, V8_UINT64_C(0xFFF0000000000000)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 376 | __ Movq(double_scratch, scratch); |
| 377 | __ Ucomisd(double_scratch, double_base); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 378 | // Comparing -Infinity with NaN results in "unordered", which sets the |
| 379 | // zero flag as if both were equal. However, it also sets the carry flag. |
| 380 | __ j(not_equal, &continue_rsqrt, Label::kNear); |
| 381 | __ j(carry, &continue_rsqrt, Label::kNear); |
| 382 | |
| 383 | // Set result to 0 in the special case. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 384 | __ Xorpd(double_result, double_result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 385 | __ jmp(&done); |
| 386 | |
| 387 | __ bind(&continue_rsqrt); |
| 388 | // sqrtsd returns -0 when input is -0. ECMA spec requires +0. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 389 | __ Xorpd(double_exponent, double_exponent); |
| 390 | __ Addsd(double_exponent, double_base); // Convert -0 to +0. |
| 391 | __ Sqrtsd(double_exponent, double_exponent); |
| 392 | __ Divsd(double_result, double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 393 | __ jmp(&done); |
| 394 | } |
| 395 | |
| 396 | // Using FPU instructions to calculate power. |
| 397 | Label fast_power_failed; |
| 398 | __ bind(&fast_power); |
| 399 | __ fnclex(); // Clear flags to catch exceptions later. |
| 400 | // Transfer (B)ase and (E)xponent onto the FPU register stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 401 | __ subp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 402 | __ Movsd(Operand(rsp, 0), double_exponent); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 403 | __ fld_d(Operand(rsp, 0)); // E |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 404 | __ Movsd(Operand(rsp, 0), double_base); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 405 | __ fld_d(Operand(rsp, 0)); // B, E |
| 406 | |
| 407 | // Exponent is in st(1) and base is in st(0) |
| 408 | // B ^ E = (2^(E * log2(B)) - 1) + 1 = (2^X - 1) + 1 for X = E * log2(B) |
| 409 | // FYL2X calculates st(1) * log2(st(0)) |
| 410 | __ fyl2x(); // X |
| 411 | __ fld(0); // X, X |
| 412 | __ frndint(); // rnd(X), X |
| 413 | __ fsub(1); // rnd(X), X-rnd(X) |
| 414 | __ fxch(1); // X - rnd(X), rnd(X) |
| 415 | // F2XM1 calculates 2^st(0) - 1 for -1 < st(0) < 1 |
| 416 | __ f2xm1(); // 2^(X-rnd(X)) - 1, rnd(X) |
| 417 | __ fld1(); // 1, 2^(X-rnd(X)) - 1, rnd(X) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 418 | __ faddp(1); // 2^(X-rnd(X)), rnd(X) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 419 | // FSCALE calculates st(0) * 2^st(1) |
| 420 | __ fscale(); // 2^X, rnd(X) |
| 421 | __ fstp(1); |
| 422 | // Bail out to runtime in case of exceptions in the status word. |
| 423 | __ fnstsw_ax(); |
| 424 | __ testb(rax, Immediate(0x5F)); // Check for all but precision exception. |
| 425 | __ j(not_zero, &fast_power_failed, Label::kNear); |
| 426 | __ fstp_d(Operand(rsp, 0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 427 | __ Movsd(double_result, Operand(rsp, 0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 428 | __ addp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 429 | __ jmp(&done); |
| 430 | |
| 431 | __ bind(&fast_power_failed); |
| 432 | __ fninit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 433 | __ addp(rsp, Immediate(kDoubleSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 434 | __ jmp(&call_runtime); |
| 435 | } |
| 436 | |
| 437 | // Calculate power with integer exponent. |
| 438 | __ bind(&int_exponent); |
| 439 | const XMMRegister double_scratch2 = double_exponent; |
| 440 | // 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] | 441 | __ movp(scratch, exponent); // Back up exponent. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 442 | __ Movsd(double_scratch, double_base); // Back up base. |
| 443 | __ Movsd(double_scratch2, double_result); // Load double_exponent with 1. |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 444 | |
| 445 | // Get absolute value of exponent. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 446 | Label no_neg, while_true, while_false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 447 | __ testl(scratch, scratch); |
| 448 | __ j(positive, &no_neg, Label::kNear); |
| 449 | __ negl(scratch); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 450 | __ bind(&no_neg); |
| 451 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 452 | __ j(zero, &while_false, Label::kNear); |
| 453 | __ shrl(scratch, Immediate(1)); |
| 454 | // Above condition means CF==0 && ZF==0. This means that the |
| 455 | // bit that has been shifted out is 0 and the result is not 0. |
| 456 | __ j(above, &while_true, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 457 | __ Movsd(double_result, double_scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 458 | __ j(zero, &while_false, Label::kNear); |
| 459 | |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 460 | __ bind(&while_true); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 461 | __ shrl(scratch, Immediate(1)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 462 | __ Mulsd(double_scratch, double_scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 463 | __ j(above, &while_true, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 464 | __ Mulsd(double_result, double_scratch); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 465 | __ j(not_zero, &while_true); |
| 466 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 467 | __ bind(&while_false); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 468 | // If the exponent is negative, return 1/result. |
| 469 | __ testl(exponent, exponent); |
| 470 | __ j(greater, &done); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 471 | __ Divsd(double_scratch2, double_result); |
| 472 | __ Movsd(double_result, double_scratch2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 473 | // Test whether result is zero. Bail out to check for subnormal result. |
| 474 | // 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] | 475 | __ Xorpd(double_scratch2, double_scratch2); |
| 476 | __ Ucomisd(double_scratch2, double_result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 477 | // double_exponent aliased as double_scratch2 has already been overwritten |
| 478 | // and may not have contained the exponent value in the first place when the |
| 479 | // input was a smi. We reset it with exponent value before bailing out. |
| 480 | __ j(not_equal, &done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 481 | __ Cvtlsi2sd(double_exponent, exponent); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 482 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 483 | // Returning or bailing out. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 484 | if (exponent_type() == ON_STACK) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 485 | // The arguments are still on the stack. |
| 486 | __ bind(&call_runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 487 | __ TailCallRuntime(Runtime::kMathPowRT); |
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 | // The stub is called from non-optimized code, which expects the result |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 490 | // as heap number in rax. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 491 | __ bind(&done); |
| 492 | __ AllocateHeapNumber(rax, rcx, &call_runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 493 | __ Movsd(FieldOperand(rax, HeapNumber::kValueOffset), double_result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 494 | __ ret(2 * kPointerSize); |
| 495 | } else { |
| 496 | __ bind(&call_runtime); |
| 497 | // Move base to the correct argument register. Exponent is already in xmm1. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 498 | __ Movsd(xmm0, double_base); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 499 | DCHECK(double_exponent.is(xmm1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 500 | { |
| 501 | AllowExternalCallThatCantCauseGC scope(masm); |
| 502 | __ PrepareCallCFunction(2); |
| 503 | __ CallCFunction( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 504 | ExternalReference::power_double_double_function(isolate()), 2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 505 | } |
| 506 | // Return value is in xmm0. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 507 | __ Movsd(double_result, xmm0); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 508 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 509 | __ bind(&done); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 510 | __ ret(0); |
| 511 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 512 | } |
| 513 | |
| 514 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 515 | void FunctionPrototypeStub::Generate(MacroAssembler* masm) { |
| 516 | Label miss; |
| 517 | Register receiver = LoadDescriptor::ReceiverRegister(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 518 | // Ensure that the vector and slot registers won't be clobbered before |
| 519 | // calling the miss handler. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 520 | DCHECK(!AreAliased(r8, r9, LoadWithVectorDescriptor::VectorRegister(), |
| 521 | LoadDescriptor::SlotRegister())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 522 | |
| 523 | NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(masm, receiver, r8, |
| 524 | r9, &miss); |
| 525 | __ bind(&miss); |
| 526 | PropertyAccessCompiler::TailCallBuiltin( |
| 527 | masm, PropertyAccessCompiler::MissBuiltin(Code::LOAD_IC)); |
| 528 | } |
| 529 | |
| 530 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 531 | void LoadIndexedStringStub::Generate(MacroAssembler* masm) { |
| 532 | // Return address is on the stack. |
| 533 | Label miss; |
| 534 | |
| 535 | Register receiver = LoadDescriptor::ReceiverRegister(); |
| 536 | Register index = LoadDescriptor::NameRegister(); |
| 537 | Register scratch = rdi; |
| 538 | Register result = rax; |
| 539 | DCHECK(!scratch.is(receiver) && !scratch.is(index)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 540 | DCHECK(!scratch.is(LoadWithVectorDescriptor::VectorRegister()) && |
| 541 | result.is(LoadDescriptor::SlotRegister())); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 542 | |
| 543 | // StringCharAtGenerator doesn't use the result register until it's passed |
| 544 | // the different miss possibilities. If it did, we would have a conflict |
| 545 | // when FLAG_vector_ics is true. |
| 546 | StringCharAtGenerator char_at_generator(receiver, index, scratch, result, |
| 547 | &miss, // When not a string. |
| 548 | &miss, // When not a number. |
| 549 | &miss, // When index out of range. |
| 550 | STRING_INDEX_IS_ARRAY_INDEX, |
| 551 | RECEIVER_IS_STRING); |
| 552 | char_at_generator.GenerateFast(masm); |
| 553 | __ ret(0); |
| 554 | |
| 555 | StubRuntimeCallHelper call_helper; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 556 | char_at_generator.GenerateSlow(masm, PART_OF_IC_HANDLER, call_helper); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 557 | |
| 558 | __ bind(&miss); |
| 559 | PropertyAccessCompiler::TailCallBuiltin( |
| 560 | masm, PropertyAccessCompiler::MissBuiltin(Code::KEYED_LOAD_IC)); |
| 561 | } |
| 562 | |
| 563 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 564 | void RegExpExecStub::Generate(MacroAssembler* masm) { |
| 565 | // Just jump directly to runtime if native RegExp is not selected at compile |
| 566 | // time or if regexp entry in generated code is turned off runtime switch or |
| 567 | // at compilation. |
| 568 | #ifdef V8_INTERPRETED_REGEXP |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 569 | __ TailCallRuntime(Runtime::kRegExpExec); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 570 | #else // V8_INTERPRETED_REGEXP |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 571 | |
| 572 | // Stack frame on entry. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 573 | // rsp[0] : return address |
| 574 | // rsp[8] : last_match_info (expected JSArray) |
| 575 | // rsp[16] : previous index |
| 576 | // rsp[24] : subject string |
| 577 | // rsp[32] : JSRegExp object |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 578 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 579 | enum RegExpExecStubArgumentIndices { |
| 580 | JS_REG_EXP_OBJECT_ARGUMENT_INDEX, |
| 581 | SUBJECT_STRING_ARGUMENT_INDEX, |
| 582 | PREVIOUS_INDEX_ARGUMENT_INDEX, |
| 583 | LAST_MATCH_INFO_ARGUMENT_INDEX, |
| 584 | REG_EXP_EXEC_ARGUMENT_COUNT |
| 585 | }; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 586 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 587 | StackArgumentsAccessor args(rsp, REG_EXP_EXEC_ARGUMENT_COUNT, |
| 588 | ARGUMENTS_DONT_CONTAIN_RECEIVER); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 589 | Label runtime; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 590 | // Ensure that a RegExp stack is allocated. |
| 591 | ExternalReference address_of_regexp_stack_memory_address = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 592 | ExternalReference::address_of_regexp_stack_memory_address(isolate()); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 593 | ExternalReference address_of_regexp_stack_memory_size = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 594 | ExternalReference::address_of_regexp_stack_memory_size(isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 595 | __ Load(kScratchRegister, address_of_regexp_stack_memory_size); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 596 | __ testp(kScratchRegister, kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 597 | __ j(zero, &runtime); |
| 598 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 599 | // Check that the first argument is a JSRegExp object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 600 | __ movp(rax, args.GetArgumentOperand(JS_REG_EXP_OBJECT_ARGUMENT_INDEX)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 601 | __ JumpIfSmi(rax, &runtime); |
| 602 | __ CmpObjectType(rax, JS_REGEXP_TYPE, kScratchRegister); |
| 603 | __ j(not_equal, &runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 604 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 605 | // Check that the RegExp has been compiled (data contains a fixed array). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 606 | __ movp(rax, FieldOperand(rax, JSRegExp::kDataOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 607 | if (FLAG_debug_code) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 608 | Condition is_smi = masm->CheckSmi(rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 609 | __ Check(NegateCondition(is_smi), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 610 | kUnexpectedTypeForRegExpDataFixedArrayExpected); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 611 | __ CmpObjectType(rax, FIXED_ARRAY_TYPE, kScratchRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 612 | __ Check(equal, kUnexpectedTypeForRegExpDataFixedArrayExpected); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 613 | } |
| 614 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 615 | // rax: RegExp data (FixedArray) |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 616 | // 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] | 617 | __ SmiToInteger32(rbx, FieldOperand(rax, JSRegExp::kDataTagOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 618 | __ cmpl(rbx, Immediate(JSRegExp::IRREGEXP)); |
| 619 | __ j(not_equal, &runtime); |
| 620 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 621 | // rax: RegExp data (FixedArray) |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 622 | // Check that the number of captures fit in the static offsets vector buffer. |
| 623 | __ SmiToInteger32(rdx, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 624 | FieldOperand(rax, JSRegExp::kIrregexpCaptureCountOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 625 | // Check (number_of_captures + 1) * 2 <= offsets vector size |
| 626 | // Or number_of_captures <= offsets vector size / 2 - 1 |
| 627 | STATIC_ASSERT(Isolate::kJSRegexpStaticOffsetsVectorSize >= 2); |
| 628 | __ cmpl(rdx, Immediate(Isolate::kJSRegexpStaticOffsetsVectorSize / 2 - 1)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 629 | __ j(above, &runtime); |
| 630 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 631 | // Reset offset for possibly sliced string. |
| 632 | __ Set(r14, 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 633 | __ movp(rdi, args.GetArgumentOperand(SUBJECT_STRING_ARGUMENT_INDEX)); |
| 634 | __ JumpIfSmi(rdi, &runtime); |
| 635 | __ movp(r15, rdi); // Make a copy of the original subject string. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 636 | // rax: RegExp data (FixedArray) |
| 637 | // rdi: subject string |
| 638 | // r15: subject string |
| 639 | // Handle subject string according to its encoding and representation: |
| 640 | // (1) Sequential two byte? If yes, go to (9). |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 641 | // (2) Sequential one byte? If yes, go to (5). |
| 642 | // (3) Sequential or cons? If not, go to (6). |
| 643 | // (4) Cons string. If the string is flat, replace subject with first string |
| 644 | // and go to (1). Otherwise bail out to runtime. |
| 645 | // (5) One byte sequential. Load regexp code for one byte. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 646 | // (E) Carry on. |
| 647 | /// [...] |
| 648 | |
| 649 | // Deferred code at the end of the stub: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 650 | // (6) Long external string? If not, go to (10). |
| 651 | // (7) External string. Make it, offset-wise, look like a sequential string. |
| 652 | // (8) Is the external string one byte? If yes, go to (5). |
| 653 | // (9) Two byte sequential. Load regexp code for two byte. Go to (E). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 654 | // (10) Short external string or not a string? If yes, bail out to runtime. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 655 | // (11) Sliced string. Replace subject with parent. Go to (1). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 656 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 657 | Label seq_one_byte_string /* 5 */, seq_two_byte_string /* 9 */, |
| 658 | external_string /* 7 */, check_underlying /* 1 */, |
| 659 | not_seq_nor_cons /* 6 */, check_code /* E */, not_long_external /* 10 */; |
| 660 | |
| 661 | __ bind(&check_underlying); |
| 662 | __ movp(rbx, FieldOperand(rdi, HeapObject::kMapOffset)); |
| 663 | __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 664 | |
| 665 | // (1) Sequential two byte? If yes, go to (9). |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 666 | __ andb(rbx, Immediate(kIsNotStringMask | |
| 667 | kStringRepresentationMask | |
| 668 | kStringEncodingMask | |
| 669 | kShortExternalStringMask)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 670 | STATIC_ASSERT((kStringTag | kSeqStringTag | kTwoByteStringTag) == 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 671 | __ j(zero, &seq_two_byte_string); // Go to (9). |
| 672 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 673 | // (2) Sequential one byte? If yes, go to (5). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 674 | // Any other sequential string must be one byte. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 675 | __ andb(rbx, Immediate(kIsNotStringMask | |
| 676 | kStringRepresentationMask | |
| 677 | kShortExternalStringMask)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 678 | __ j(zero, &seq_one_byte_string, Label::kNear); // Go to (5). |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 679 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 680 | // (3) Sequential or cons? If not, go to (6). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 681 | // We check whether the subject string is a cons, since sequential strings |
| 682 | // have already been covered. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 683 | STATIC_ASSERT(kConsStringTag < kExternalStringTag); |
| 684 | STATIC_ASSERT(kSlicedStringTag > kExternalStringTag); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 685 | STATIC_ASSERT(kIsNotStringMask > kExternalStringTag); |
| 686 | STATIC_ASSERT(kShortExternalStringTag > kExternalStringTag); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 687 | __ cmpp(rbx, Immediate(kExternalStringTag)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 688 | __ j(greater_equal, ¬_seq_nor_cons); // Go to (6). |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 689 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 690 | // (4) Cons string. Check that it's flat. |
| 691 | // Replace subject with first string and reload instance type. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 692 | __ CompareRoot(FieldOperand(rdi, ConsString::kSecondOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 693 | Heap::kempty_stringRootIndex); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 694 | __ j(not_equal, &runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 695 | __ movp(rdi, FieldOperand(rdi, ConsString::kFirstOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 696 | __ jmp(&check_underlying); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 697 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 698 | // (5) One byte sequential. Load regexp code for one byte. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 699 | __ bind(&seq_one_byte_string); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 700 | // rax: RegExp data (FixedArray) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 701 | __ movp(r11, FieldOperand(rax, JSRegExp::kDataOneByteCodeOffset)); |
| 702 | __ Set(rcx, 1); // Type is one byte. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 703 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 704 | // (E) Carry on. String handling is done. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 705 | __ bind(&check_code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 706 | // r11: irregexp code |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 707 | // Check that the irregexp code has been generated for the actual string |
| 708 | // 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] | 709 | // smi (code flushing support) |
| 710 | __ JumpIfSmi(r11, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 711 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 712 | // rdi: sequential subject string (or look-alike, external string) |
| 713 | // r15: original subject string |
| 714 | // 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] | 715 | // r11: code |
| 716 | // Load used arguments before starting to push arguments for call to native |
| 717 | // RegExp code to avoid handling changing stack height. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 718 | // We have to use r15 instead of rdi to load the length because rdi might |
| 719 | // have been only made to look like a sequential string when it actually |
| 720 | // is an external string. |
| 721 | __ movp(rbx, args.GetArgumentOperand(PREVIOUS_INDEX_ARGUMENT_INDEX)); |
| 722 | __ JumpIfNotSmi(rbx, &runtime); |
| 723 | __ SmiCompare(rbx, FieldOperand(r15, String::kLengthOffset)); |
| 724 | __ j(above_equal, &runtime); |
| 725 | __ SmiToInteger64(rbx, rbx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 726 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 727 | // rdi: subject string |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 728 | // rbx: previous index |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 729 | // 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] | 730 | // r11: code |
| 731 | // All checks done. Now push arguments for native regexp code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 732 | Counters* counters = isolate()->counters(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 733 | __ IncrementCounter(counters->regexp_entry_native(), 1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 734 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 735 | // Isolates: note we add an additional parameter here (isolate pointer). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 736 | static const int kRegExpExecuteArguments = 9; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 737 | int argument_slots_on_stack = |
| 738 | masm->ArgumentStackSlotsForCFunctionCall(kRegExpExecuteArguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 739 | __ EnterApiExitFrame(argument_slots_on_stack); |
| 740 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 741 | // Argument 9: Pass current isolate address. |
| 742 | __ LoadAddress(kScratchRegister, |
| 743 | ExternalReference::isolate_address(isolate())); |
| 744 | __ movq(Operand(rsp, (argument_slots_on_stack - 1) * kRegisterSize), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 745 | kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 746 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 747 | // Argument 8: Indicate that this is a direct call from JavaScript. |
| 748 | __ movq(Operand(rsp, (argument_slots_on_stack - 2) * kRegisterSize), |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 749 | Immediate(1)); |
| 750 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 751 | // Argument 7: Start (high end) of backtracking stack memory area. |
| 752 | __ Move(kScratchRegister, address_of_regexp_stack_memory_address); |
| 753 | __ movp(r9, Operand(kScratchRegister, 0)); |
| 754 | __ Move(kScratchRegister, address_of_regexp_stack_memory_size); |
| 755 | __ addp(r9, Operand(kScratchRegister, 0)); |
| 756 | __ movq(Operand(rsp, (argument_slots_on_stack - 3) * kRegisterSize), r9); |
| 757 | |
| 758 | // Argument 6: Set the number of capture registers to zero to force global |
| 759 | // regexps to behave as non-global. This does not affect non-global regexps. |
| 760 | // 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] | 761 | #ifdef _WIN64 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 762 | __ movq(Operand(rsp, (argument_slots_on_stack - 4) * kRegisterSize), |
| 763 | Immediate(0)); |
| 764 | #else |
| 765 | __ Set(r9, 0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 766 | #endif |
| 767 | |
| 768 | // Argument 5: static offsets vector buffer. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 769 | __ LoadAddress( |
| 770 | r8, ExternalReference::address_of_static_offsets_vector(isolate())); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 771 | // Argument 5 passed in r8 on Linux and on the stack on Windows. |
| 772 | #ifdef _WIN64 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 773 | __ movq(Operand(rsp, (argument_slots_on_stack - 5) * kRegisterSize), r8); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 774 | #endif |
| 775 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 776 | // rdi: subject string |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 777 | // rbx: previous index |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 778 | // 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] | 779 | // r11: code |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 780 | // r14: slice offset |
| 781 | // r15: original subject string |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 782 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 783 | // Argument 2: Previous index. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 784 | __ movp(arg_reg_2, rbx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 785 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 786 | // Argument 4: End of string data |
| 787 | // Argument 3: Start of string data |
| 788 | Label setup_two_byte, setup_rest, got_length, length_not_from_slice; |
| 789 | // Prepare start and end index of the input. |
| 790 | // 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] | 791 | __ addp(rbx, r14); |
| 792 | __ SmiToInteger32(arg_reg_3, FieldOperand(r15, String::kLengthOffset)); |
| 793 | __ addp(r14, arg_reg_3); // Using arg3 as scratch. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 794 | |
| 795 | // rbx: start index of the input |
| 796 | // r14: end index of the input |
| 797 | // r15: original subject string |
| 798 | __ testb(rcx, rcx); // Last use of rcx as encoding of subject string. |
| 799 | __ j(zero, &setup_two_byte, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 800 | __ leap(arg_reg_4, |
| 801 | FieldOperand(rdi, r14, times_1, SeqOneByteString::kHeaderSize)); |
| 802 | __ leap(arg_reg_3, |
| 803 | FieldOperand(rdi, rbx, times_1, SeqOneByteString::kHeaderSize)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 804 | __ jmp(&setup_rest, Label::kNear); |
| 805 | __ bind(&setup_two_byte); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 806 | __ leap(arg_reg_4, |
| 807 | FieldOperand(rdi, r14, times_2, SeqTwoByteString::kHeaderSize)); |
| 808 | __ leap(arg_reg_3, |
| 809 | FieldOperand(rdi, rbx, times_2, SeqTwoByteString::kHeaderSize)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 810 | __ bind(&setup_rest); |
| 811 | |
| 812 | // Argument 1: Original subject string. |
| 813 | // The original subject is in the previous stack frame. Therefore we have to |
| 814 | // use rbp, which points exactly to one pointer size below the previous rsp. |
| 815 | // (Because creating a new stack frame pushes the previous rbp onto the stack |
| 816 | // and thereby moves up rsp by one kPointerSize.) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 817 | __ movp(arg_reg_1, r15); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 818 | |
| 819 | // Locate the code entry and call it. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 820 | __ addp(r11, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 821 | __ call(r11); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 822 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 823 | __ LeaveApiExitFrame(true); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 824 | |
| 825 | // Check the result. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 826 | Label success; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 827 | Label exception; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 828 | __ cmpl(rax, Immediate(1)); |
| 829 | // We expect exactly one result since we force the called regexp to behave |
| 830 | // as non-global. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 831 | __ j(equal, &success, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 832 | __ cmpl(rax, Immediate(NativeRegExpMacroAssembler::EXCEPTION)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 833 | __ j(equal, &exception); |
| 834 | __ cmpl(rax, Immediate(NativeRegExpMacroAssembler::FAILURE)); |
| 835 | // If none of the above, it can only be retry. |
| 836 | // Handle that in the runtime system. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 837 | __ j(not_equal, &runtime); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 838 | |
| 839 | // For failure return null. |
| 840 | __ LoadRoot(rax, Heap::kNullValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 841 | __ ret(REG_EXP_EXEC_ARGUMENT_COUNT * kPointerSize); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 842 | |
| 843 | // Load RegExp data. |
| 844 | __ bind(&success); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 845 | __ movp(rax, args.GetArgumentOperand(JS_REG_EXP_OBJECT_ARGUMENT_INDEX)); |
| 846 | __ movp(rcx, FieldOperand(rax, JSRegExp::kDataOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 847 | __ SmiToInteger32(rax, |
| 848 | FieldOperand(rcx, JSRegExp::kIrregexpCaptureCountOffset)); |
| 849 | // Calculate number of capture registers (number_of_captures + 1) * 2. |
| 850 | __ leal(rdx, Operand(rax, rax, times_1, 2)); |
| 851 | |
| 852 | // rdx: Number of capture registers |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 853 | // Check that the fourth object is a JSArray object. |
| 854 | __ movp(r15, args.GetArgumentOperand(LAST_MATCH_INFO_ARGUMENT_INDEX)); |
| 855 | __ JumpIfSmi(r15, &runtime); |
| 856 | __ CmpObjectType(r15, JS_ARRAY_TYPE, kScratchRegister); |
| 857 | __ j(not_equal, &runtime); |
| 858 | // Check that the JSArray is in fast case. |
| 859 | __ movp(rbx, FieldOperand(r15, JSArray::kElementsOffset)); |
| 860 | __ movp(rax, FieldOperand(rbx, HeapObject::kMapOffset)); |
| 861 | __ CompareRoot(rax, Heap::kFixedArrayMapRootIndex); |
| 862 | __ j(not_equal, &runtime); |
| 863 | // Check that the last match info has space for the capture registers and the |
| 864 | // additional information. Ensure no overflow in add. |
| 865 | STATIC_ASSERT(FixedArray::kMaxLength < kMaxInt - FixedArray::kLengthOffset); |
| 866 | __ SmiToInteger32(rax, FieldOperand(rbx, FixedArray::kLengthOffset)); |
| 867 | __ subl(rax, Immediate(RegExpImpl::kLastMatchOverhead)); |
| 868 | __ cmpl(rdx, rax); |
| 869 | __ j(greater, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 870 | |
| 871 | // rbx: last_match_info backing store (FixedArray) |
| 872 | // rdx: number of capture registers |
| 873 | // Store the capture count. |
| 874 | __ Integer32ToSmi(kScratchRegister, rdx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 875 | __ movp(FieldOperand(rbx, RegExpImpl::kLastCaptureCountOffset), |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 876 | kScratchRegister); |
| 877 | // Store last subject and last input. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 878 | __ movp(rax, args.GetArgumentOperand(SUBJECT_STRING_ARGUMENT_INDEX)); |
| 879 | __ movp(FieldOperand(rbx, RegExpImpl::kLastSubjectOffset), rax); |
| 880 | __ movp(rcx, rax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 881 | __ RecordWriteField(rbx, |
| 882 | RegExpImpl::kLastSubjectOffset, |
| 883 | rax, |
| 884 | rdi, |
| 885 | kDontSaveFPRegs); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 886 | __ movp(rax, rcx); |
| 887 | __ movp(FieldOperand(rbx, RegExpImpl::kLastInputOffset), rax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 888 | __ RecordWriteField(rbx, |
| 889 | RegExpImpl::kLastInputOffset, |
| 890 | rax, |
| 891 | rdi, |
| 892 | kDontSaveFPRegs); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 893 | |
| 894 | // Get the static offsets vector filled by the native regexp code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 895 | __ LoadAddress( |
| 896 | rcx, ExternalReference::address_of_static_offsets_vector(isolate())); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 897 | |
| 898 | // rbx: last_match_info backing store (FixedArray) |
| 899 | // rcx: offsets vector |
| 900 | // rdx: number of capture registers |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 901 | Label next_capture, done; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 902 | // Capture register counter starts from number of capture registers and |
| 903 | // counts down until wraping after zero. |
| 904 | __ bind(&next_capture); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 905 | __ subp(rdx, Immediate(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 906 | __ j(negative, &done, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 907 | // Read the value from the static offsets vector buffer and make it a smi. |
| 908 | __ movl(rdi, Operand(rcx, rdx, times_int_size, 0)); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 909 | __ Integer32ToSmi(rdi, rdi); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 910 | // Store the smi value in the last match info. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 911 | __ movp(FieldOperand(rbx, |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 912 | rdx, |
| 913 | times_pointer_size, |
| 914 | RegExpImpl::kFirstCaptureOffset), |
| 915 | rdi); |
| 916 | __ jmp(&next_capture); |
| 917 | __ bind(&done); |
| 918 | |
| 919 | // Return last match info. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 920 | __ movp(rax, r15); |
| 921 | __ ret(REG_EXP_EXEC_ARGUMENT_COUNT * kPointerSize); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 922 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 923 | __ bind(&exception); |
| 924 | // Result must now be exception. If there is no pending exception already a |
| 925 | // stack overflow (on the backtrack stack) was detected in RegExp code but |
| 926 | // haven't created the exception yet. Handle that in the runtime system. |
| 927 | // TODO(592): Rerunning the RegExp to get the stack overflow exception. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 928 | ExternalReference pending_exception_address( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 929 | Isolate::kPendingExceptionAddress, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 930 | Operand pending_exception_operand = |
| 931 | masm->ExternalOperand(pending_exception_address, rbx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 932 | __ movp(rax, pending_exception_operand); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 933 | __ LoadRoot(rdx, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 934 | __ cmpp(rax, rdx); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 935 | __ j(equal, &runtime); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 936 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 937 | // For exception, throw the exception again. |
| 938 | __ TailCallRuntime(Runtime::kRegExpExecReThrow); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 939 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 940 | // Do the runtime call to execute the regexp. |
| 941 | __ bind(&runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 942 | __ TailCallRuntime(Runtime::kRegExpExec); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 943 | |
| 944 | // Deferred code for string handling. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 945 | // (6) Long external string? If not, go to (10). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 946 | __ bind(¬_seq_nor_cons); |
| 947 | // Compare flags are still set from (3). |
| 948 | __ j(greater, ¬_long_external, Label::kNear); // Go to (10). |
| 949 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 950 | // (7) External string. Short external strings have been ruled out. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 951 | __ bind(&external_string); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 952 | __ movp(rbx, FieldOperand(rdi, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 953 | __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
| 954 | if (FLAG_debug_code) { |
| 955 | // Assert that we do not have a cons or slice (indirect strings) here. |
| 956 | // Sequential strings have already been ruled out. |
| 957 | __ testb(rbx, Immediate(kIsIndirectStringMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 958 | __ Assert(zero, kExternalStringExpectedButNotFound); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 959 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 960 | __ movp(rdi, FieldOperand(rdi, ExternalString::kResourceDataOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 961 | // 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] | 962 | STATIC_ASSERT(SeqTwoByteString::kHeaderSize == SeqOneByteString::kHeaderSize); |
| 963 | __ subp(rdi, Immediate(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 964 | STATIC_ASSERT(kTwoByteStringTag == 0); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 965 | // (8) Is the external string one byte? If yes, go to (5). |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 966 | __ testb(rbx, Immediate(kStringEncodingMask)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 967 | __ j(not_zero, &seq_one_byte_string); // Go to (5). |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 968 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 969 | // rdi: subject string (flat two-byte) |
| 970 | // rax: RegExp data (FixedArray) |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 971 | // (9) Two byte sequential. Load regexp code for two byte. Go to (E). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 972 | __ bind(&seq_two_byte_string); |
| 973 | __ movp(r11, FieldOperand(rax, JSRegExp::kDataUC16CodeOffset)); |
| 974 | __ Set(rcx, 0); // Type is two byte. |
| 975 | __ jmp(&check_code); // Go to (E). |
| 976 | |
| 977 | // (10) Not a string or a short external string? If yes, bail out to runtime. |
| 978 | __ bind(¬_long_external); |
| 979 | // Catch non-string subject or short external string. |
| 980 | STATIC_ASSERT(kNotStringTag != 0 && kShortExternalStringTag !=0); |
| 981 | __ testb(rbx, Immediate(kIsNotStringMask | kShortExternalStringMask)); |
| 982 | __ j(not_zero, &runtime); |
| 983 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 984 | // (11) Sliced string. Replace subject with parent. Go to (1). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 985 | // Load offset into r14 and replace subject string with parent. |
| 986 | __ SmiToInteger32(r14, FieldOperand(rdi, SlicedString::kOffsetOffset)); |
| 987 | __ movp(rdi, FieldOperand(rdi, SlicedString::kParentOffset)); |
| 988 | __ jmp(&check_underlying); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 989 | #endif // V8_INTERPRETED_REGEXP |
| 990 | } |
| 991 | |
| 992 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 993 | static int NegativeComparisonResult(Condition cc) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 994 | DCHECK(cc != equal); |
| 995 | DCHECK((cc == less) || (cc == less_equal) |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 996 | || (cc == greater) || (cc == greater_equal)); |
| 997 | return (cc == greater || cc == greater_equal) ? LESS : GREATER; |
| 998 | } |
| 999 | |
| 1000 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1001 | static void CheckInputType(MacroAssembler* masm, Register input, |
| 1002 | CompareICState::State expected, Label* fail) { |
| 1003 | Label ok; |
| 1004 | if (expected == CompareICState::SMI) { |
| 1005 | __ JumpIfNotSmi(input, fail); |
| 1006 | } else if (expected == CompareICState::NUMBER) { |
| 1007 | __ JumpIfSmi(input, &ok); |
| 1008 | __ CompareMap(input, masm->isolate()->factory()->heap_number_map()); |
| 1009 | __ j(not_equal, fail); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1010 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1011 | // We could be strict about internalized/non-internalized here, but as long as |
| 1012 | // hydrogen doesn't care, the stub doesn't have to care either. |
| 1013 | __ bind(&ok); |
| 1014 | } |
| 1015 | |
| 1016 | |
| 1017 | static void BranchIfNotInternalizedString(MacroAssembler* masm, |
| 1018 | Label* label, |
| 1019 | Register object, |
| 1020 | Register scratch) { |
| 1021 | __ JumpIfSmi(object, label); |
| 1022 | __ movp(scratch, FieldOperand(object, HeapObject::kMapOffset)); |
| 1023 | __ movzxbp(scratch, |
| 1024 | FieldOperand(scratch, Map::kInstanceTypeOffset)); |
| 1025 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 1026 | __ testb(scratch, Immediate(kIsNotStringMask | kIsNotInternalizedMask)); |
| 1027 | __ j(not_zero, label); |
| 1028 | } |
| 1029 | |
| 1030 | |
| 1031 | void CompareICStub::GenerateGeneric(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1032 | Label runtime_call, check_unequal_objects, done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1033 | Condition cc = GetCondition(); |
| 1034 | Factory* factory = isolate()->factory(); |
| 1035 | |
| 1036 | Label miss; |
| 1037 | CheckInputType(masm, rdx, left(), &miss); |
| 1038 | CheckInputType(masm, rax, right(), &miss); |
| 1039 | |
| 1040 | // Compare two smis. |
| 1041 | Label non_smi, smi_done; |
| 1042 | __ JumpIfNotBothSmi(rax, rdx, &non_smi); |
| 1043 | __ subp(rdx, rax); |
| 1044 | __ j(no_overflow, &smi_done); |
| 1045 | __ notp(rdx); // Correct sign in case of overflow. rdx cannot be 0 here. |
| 1046 | __ bind(&smi_done); |
| 1047 | __ movp(rax, rdx); |
| 1048 | __ ret(0); |
| 1049 | __ bind(&non_smi); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 1050 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1051 | // The compare stub returns a positive, negative, or zero 64-bit integer |
| 1052 | // value in rax, corresponding to result of comparing the two inputs. |
| 1053 | // NOTICE! This code is only reached after a smi-fast-case check, so |
| 1054 | // it is certain that at least one operand isn't a smi. |
| 1055 | |
| 1056 | // Two identical objects are equal unless they are both NaN or undefined. |
| 1057 | { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1058 | Label not_identical; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1059 | __ cmpp(rax, rdx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1060 | __ j(not_equal, ¬_identical, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1061 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1062 | if (cc != equal) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1063 | // Check for undefined. undefined OP undefined is false even though |
| 1064 | // undefined == undefined. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1065 | __ CompareRoot(rdx, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1066 | Label check_for_nan; |
| 1067 | __ j(not_equal, &check_for_nan, Label::kNear); |
| 1068 | __ Set(rax, NegativeComparisonResult(cc)); |
| 1069 | __ ret(0); |
| 1070 | __ bind(&check_for_nan); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1071 | } |
| 1072 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1073 | // 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] | 1074 | // so we do the second best thing - test it ourselves. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1075 | Label heap_number; |
| 1076 | // If it's not a heap number, then return equal for (in)equality operator. |
| 1077 | __ Cmp(FieldOperand(rdx, HeapObject::kMapOffset), |
| 1078 | factory->heap_number_map()); |
| 1079 | __ j(equal, &heap_number, Label::kNear); |
| 1080 | if (cc != equal) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1081 | __ movp(rcx, FieldOperand(rax, HeapObject::kMapOffset)); |
| 1082 | __ movzxbl(rcx, FieldOperand(rcx, Map::kInstanceTypeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1083 | // Call runtime on identical objects. Otherwise return equal. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1084 | __ cmpb(rcx, Immediate(static_cast<uint8_t>(FIRST_JS_RECEIVER_TYPE))); |
| 1085 | __ j(above_equal, &runtime_call, Label::kFar); |
| 1086 | // Call runtime on identical symbols since we need to throw a TypeError. |
| 1087 | __ cmpb(rcx, Immediate(static_cast<uint8_t>(SYMBOL_TYPE))); |
| 1088 | __ j(equal, &runtime_call, Label::kFar); |
| 1089 | // Call runtime on identical SIMD values since we must throw a TypeError. |
| 1090 | __ cmpb(rcx, Immediate(static_cast<uint8_t>(SIMD128_VALUE_TYPE))); |
| 1091 | __ j(equal, &runtime_call, Label::kFar); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1092 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1093 | __ Set(rax, EQUAL); |
| 1094 | __ ret(0); |
| 1095 | |
| 1096 | __ bind(&heap_number); |
| 1097 | // It is a heap number, so return equal if it's not NaN. |
| 1098 | // For NaN, return 1 for every condition except greater and |
| 1099 | // greater-equal. Return -1 for them, so the comparison yields |
| 1100 | // false for all conditions except not-equal. |
| 1101 | __ Set(rax, EQUAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1102 | __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset)); |
| 1103 | __ Ucomisd(xmm0, xmm0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1104 | __ setcc(parity_even, rax); |
| 1105 | // rax is 0 for equal non-NaN heapnumbers, 1 for NaNs. |
| 1106 | if (cc == greater_equal || cc == greater) { |
| 1107 | __ negp(rax); |
| 1108 | } |
| 1109 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1110 | |
| 1111 | __ bind(¬_identical); |
| 1112 | } |
| 1113 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1114 | if (cc == equal) { // Both strict and non-strict. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1115 | Label slow; // Fallthrough label. |
| 1116 | |
| 1117 | // If we're doing a strict equality comparison, we don't have to do |
| 1118 | // type conversion, so we generate code to do fast comparison for objects |
| 1119 | // and oddballs. Non-smi numbers and strings still go through the usual |
| 1120 | // slow-case code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1121 | if (strict()) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1122 | // If either is a Smi (we know that not both are), then they can only |
| 1123 | // be equal if the other is a HeapNumber. If so, use the slow case. |
| 1124 | { |
| 1125 | Label not_smis; |
| 1126 | __ SelectNonSmi(rbx, rax, rdx, ¬_smis); |
| 1127 | |
| 1128 | // Check if the non-smi operand is a heap number. |
| 1129 | __ Cmp(FieldOperand(rbx, HeapObject::kMapOffset), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1130 | factory->heap_number_map()); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1131 | // If heap number, handle it in the slow case. |
| 1132 | __ j(equal, &slow); |
| 1133 | // Return non-equal. ebx (the lower half of rbx) is not zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1134 | __ movp(rax, rbx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1135 | __ ret(0); |
| 1136 | |
| 1137 | __ bind(¬_smis); |
| 1138 | } |
| 1139 | |
| 1140 | // If either operand is a JSObject or an oddball value, then they are not |
| 1141 | // equal since their pointers are different |
| 1142 | // There is no test for undetectability in strict equality. |
| 1143 | |
| 1144 | // 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] | 1145 | STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1146 | Label first_non_object; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1147 | __ CmpObjectType(rax, FIRST_JS_RECEIVER_TYPE, rcx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1148 | __ j(below, &first_non_object, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1149 | // Return non-zero (rax (not rax) is not zero) |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1150 | Label return_not_equal; |
| 1151 | STATIC_ASSERT(kHeapObjectTag != 0); |
| 1152 | __ bind(&return_not_equal); |
| 1153 | __ ret(0); |
| 1154 | |
| 1155 | __ bind(&first_non_object); |
| 1156 | // Check for oddballs: true, false, null, undefined. |
| 1157 | __ CmpInstanceType(rcx, ODDBALL_TYPE); |
| 1158 | __ j(equal, &return_not_equal); |
| 1159 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1160 | __ CmpObjectType(rdx, FIRST_JS_RECEIVER_TYPE, rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1161 | __ j(above_equal, &return_not_equal); |
| 1162 | |
| 1163 | // Check for oddballs: true, false, null, undefined. |
| 1164 | __ CmpInstanceType(rcx, ODDBALL_TYPE); |
| 1165 | __ j(equal, &return_not_equal); |
| 1166 | |
| 1167 | // Fall through to the general case. |
| 1168 | } |
| 1169 | __ bind(&slow); |
| 1170 | } |
| 1171 | |
| 1172 | // Generate the number comparison code. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1173 | Label non_number_comparison; |
| 1174 | Label unordered; |
| 1175 | FloatingPointHelper::LoadSSE2UnknownOperands(masm, &non_number_comparison); |
| 1176 | __ xorl(rax, rax); |
| 1177 | __ xorl(rcx, rcx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1178 | __ Ucomisd(xmm0, xmm1); |
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 | // Don't base result on EFLAGS when a NaN is involved. |
| 1181 | __ j(parity_even, &unordered, Label::kNear); |
| 1182 | // Return a result of -1, 0, or 1, based on EFLAGS. |
| 1183 | __ setcc(above, rax); |
| 1184 | __ setcc(below, rcx); |
| 1185 | __ subp(rax, rcx); |
| 1186 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1187 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1188 | // If one of the numbers was NaN, then the result is always false. |
| 1189 | // The cc is never not-equal. |
| 1190 | __ bind(&unordered); |
| 1191 | DCHECK(cc != not_equal); |
| 1192 | if (cc == less || cc == less_equal) { |
| 1193 | __ Set(rax, 1); |
| 1194 | } else { |
| 1195 | __ Set(rax, -1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1196 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1197 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1198 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1199 | // The number comparison code did not provide a valid result. |
| 1200 | __ bind(&non_number_comparison); |
| 1201 | |
| 1202 | // Fast negative check for internalized-to-internalized equality. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1203 | Label check_for_strings; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1204 | if (cc == equal) { |
| 1205 | BranchIfNotInternalizedString( |
| 1206 | masm, &check_for_strings, rax, kScratchRegister); |
| 1207 | BranchIfNotInternalizedString( |
| 1208 | masm, &check_for_strings, rdx, kScratchRegister); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1209 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1210 | // We've already checked for object identity, so if both operands are |
| 1211 | // internalized strings they aren't equal. Register rax (not rax) already |
| 1212 | // holds a non-zero value, which indicates not equal, so just return. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1213 | __ ret(0); |
| 1214 | } |
| 1215 | |
| 1216 | __ bind(&check_for_strings); |
| 1217 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1218 | __ JumpIfNotBothSequentialOneByteStrings(rdx, rax, rcx, rbx, |
| 1219 | &check_unequal_objects); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1220 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1221 | // Inline comparison of one-byte strings. |
| 1222 | if (cc == equal) { |
| 1223 | StringHelper::GenerateFlatOneByteStringEquals(masm, rdx, rax, rcx, rbx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1224 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1225 | StringHelper::GenerateCompareFlatOneByteStrings(masm, rdx, rax, rcx, rbx, |
| 1226 | rdi, r8); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1227 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1228 | |
| 1229 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1230 | __ Abort(kUnexpectedFallThroughFromStringComparison); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1231 | #endif |
| 1232 | |
| 1233 | __ bind(&check_unequal_objects); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1234 | if (cc == equal && !strict()) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1235 | // Not strict equality. Objects are unequal if |
| 1236 | // they are both JSObjects and not undetectable, |
| 1237 | // and their pointers are different. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1238 | Label return_equal, return_unequal, undetectable; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1239 | // At most one is a smi, so we can test for smi by adding the two. |
| 1240 | // A smi plus a heap object has the low bit set, a heap object plus |
| 1241 | // a heap object has the low bit clear. |
| 1242 | STATIC_ASSERT(kSmiTag == 0); |
| 1243 | STATIC_ASSERT(kSmiTagMask == 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1244 | __ leap(rcx, Operand(rax, rdx, times_1, 0)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1245 | __ testb(rcx, Immediate(kSmiTagMask)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1246 | __ j(not_zero, &runtime_call, Label::kNear); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1247 | |
| 1248 | __ movp(rbx, FieldOperand(rax, HeapObject::kMapOffset)); |
| 1249 | __ movp(rcx, FieldOperand(rdx, HeapObject::kMapOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1250 | __ testb(FieldOperand(rbx, Map::kBitFieldOffset), |
| 1251 | Immediate(1 << Map::kIsUndetectable)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1252 | __ j(not_zero, &undetectable, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1253 | __ testb(FieldOperand(rcx, Map::kBitFieldOffset), |
| 1254 | Immediate(1 << Map::kIsUndetectable)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1255 | __ j(not_zero, &return_unequal, Label::kNear); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1256 | |
| 1257 | __ CmpInstanceType(rbx, FIRST_JS_RECEIVER_TYPE); |
| 1258 | __ j(below, &runtime_call, Label::kNear); |
| 1259 | __ CmpInstanceType(rcx, FIRST_JS_RECEIVER_TYPE); |
| 1260 | __ j(below, &runtime_call, Label::kNear); |
| 1261 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1262 | __ bind(&return_unequal); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1263 | // Return non-equal by returning the non-zero object pointer in rax. |
| 1264 | __ ret(0); |
| 1265 | |
| 1266 | __ bind(&undetectable); |
| 1267 | __ testb(FieldOperand(rcx, Map::kBitFieldOffset), |
| 1268 | Immediate(1 << Map::kIsUndetectable)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1269 | __ j(zero, &return_unequal, Label::kNear); |
| 1270 | |
| 1271 | // If both sides are JSReceivers, then the result is false according to |
| 1272 | // the HTML specification, which says that only comparisons with null or |
| 1273 | // undefined are affected by special casing for document.all. |
| 1274 | __ CmpInstanceType(rbx, ODDBALL_TYPE); |
| 1275 | __ j(zero, &return_equal, Label::kNear); |
| 1276 | __ CmpInstanceType(rcx, ODDBALL_TYPE); |
| 1277 | __ j(not_zero, &return_unequal, Label::kNear); |
| 1278 | |
| 1279 | __ bind(&return_equal); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1280 | __ Set(rax, EQUAL); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1281 | __ ret(0); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1282 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1283 | __ bind(&runtime_call); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1284 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1285 | if (cc == equal) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1286 | { |
| 1287 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1288 | __ Push(rdx); |
| 1289 | __ Push(rax); |
| 1290 | __ CallRuntime(strict() ? Runtime::kStrictEqual : Runtime::kEqual); |
| 1291 | } |
| 1292 | // Turn true into 0 and false into some non-zero value. |
| 1293 | STATIC_ASSERT(EQUAL == 0); |
| 1294 | __ LoadRoot(rdx, Heap::kTrueValueRootIndex); |
| 1295 | __ subp(rax, rdx); |
| 1296 | __ Ret(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1297 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1298 | // Push arguments below the return address to prepare jump to builtin. |
| 1299 | __ PopReturnAddressTo(rcx); |
| 1300 | __ Push(rdx); |
| 1301 | __ Push(rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1302 | __ Push(Smi::FromInt(NegativeComparisonResult(cc))); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1303 | __ PushReturnAddressFrom(rcx); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1304 | __ TailCallRuntime(Runtime::kCompare); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1305 | } |
| 1306 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1307 | __ bind(&miss); |
| 1308 | GenerateMiss(masm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1309 | } |
| 1310 | |
| 1311 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1312 | static void CallStubInRecordCallTarget(MacroAssembler* masm, CodeStub* stub) { |
| 1313 | // rax : number of arguments to the construct function |
| 1314 | // rbx : feedback vector |
| 1315 | // rdx : slot in feedback vector (Smi) |
| 1316 | // rdi : the function to call |
| 1317 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1318 | |
| 1319 | // Number-of-arguments register must be smi-tagged to call out. |
| 1320 | __ Integer32ToSmi(rax, rax); |
| 1321 | __ Push(rax); |
| 1322 | __ Push(rdi); |
| 1323 | __ Integer32ToSmi(rdx, rdx); |
| 1324 | __ Push(rdx); |
| 1325 | __ Push(rbx); |
| 1326 | |
| 1327 | __ CallStub(stub); |
| 1328 | |
| 1329 | __ Pop(rbx); |
| 1330 | __ Pop(rdx); |
| 1331 | __ Pop(rdi); |
| 1332 | __ Pop(rax); |
| 1333 | __ SmiToInteger32(rax, rax); |
| 1334 | } |
| 1335 | |
| 1336 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1337 | static void GenerateRecordCallTarget(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1338 | // Cache the called function in a feedback vector slot. Cache states |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1339 | // are uninitialized, monomorphic (indicated by a JSFunction), and |
| 1340 | // megamorphic. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1341 | // rax : number of arguments to the construct function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1342 | // rbx : feedback vector |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1343 | // rdx : slot in feedback vector (Smi) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1344 | // rdi : the function to call |
| 1345 | Isolate* isolate = masm->isolate(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1346 | Label initialize, done, miss, megamorphic, not_array_function, |
| 1347 | done_no_smi_convert; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1348 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1349 | // Load the cache state into r11. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1350 | __ SmiToInteger32(rdx, rdx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1351 | __ movp(r11, |
| 1352 | FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1353 | |
| 1354 | // A monomorphic cache hit or an already megamorphic state: invoke the |
| 1355 | // function without changing the state. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1356 | // We don't know if r11 is a WeakCell or a Symbol, but it's harmless to read |
| 1357 | // at this position in a symbol (see static asserts in |
| 1358 | // type-feedback-vector.h). |
| 1359 | Label check_allocation_site; |
| 1360 | __ cmpp(rdi, FieldOperand(r11, WeakCell::kValueOffset)); |
| 1361 | __ j(equal, &done, Label::kFar); |
| 1362 | __ CompareRoot(r11, Heap::kmegamorphic_symbolRootIndex); |
| 1363 | __ j(equal, &done, Label::kFar); |
| 1364 | __ CompareRoot(FieldOperand(r11, HeapObject::kMapOffset), |
| 1365 | Heap::kWeakCellMapRootIndex); |
| 1366 | __ j(not_equal, &check_allocation_site); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1367 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1368 | // If the weak cell is cleared, we have a new chance to become monomorphic. |
| 1369 | __ CheckSmi(FieldOperand(r11, WeakCell::kValueOffset)); |
| 1370 | __ j(equal, &initialize); |
| 1371 | __ jmp(&megamorphic); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1372 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1373 | __ bind(&check_allocation_site); |
| 1374 | // If we came here, we need to see if we are the array function. |
| 1375 | // If we didn't have a matching function, and we didn't find the megamorph |
| 1376 | // sentinel, then we have in the slot either some other function or an |
| 1377 | // AllocationSite. |
| 1378 | __ CompareRoot(FieldOperand(r11, 0), Heap::kAllocationSiteMapRootIndex); |
| 1379 | __ j(not_equal, &miss); |
| 1380 | |
| 1381 | // Make sure the function is the Array() function |
| 1382 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, r11); |
| 1383 | __ cmpp(rdi, r11); |
| 1384 | __ j(not_equal, &megamorphic); |
| 1385 | __ jmp(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1386 | |
| 1387 | __ bind(&miss); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1388 | |
| 1389 | // A monomorphic miss (i.e, here the cache is not uninitialized) goes |
| 1390 | // megamorphic. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1391 | __ CompareRoot(r11, Heap::kuninitialized_symbolRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1392 | __ j(equal, &initialize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1393 | // MegamorphicSentinel is an immortal immovable object (undefined) so no |
| 1394 | // write-barrier is needed. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1395 | __ bind(&megamorphic); |
| 1396 | __ Move(FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize), |
| 1397 | TypeFeedbackVector::MegamorphicSentinel(isolate)); |
| 1398 | __ jmp(&done); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1399 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1400 | // An uninitialized cache is patched with the function or sentinel to |
| 1401 | // indicate the ElementsKind if function is the Array constructor. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1402 | __ bind(&initialize); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1403 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1404 | // Make sure the function is the Array() function |
| 1405 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, r11); |
| 1406 | __ cmpp(rdi, r11); |
| 1407 | __ j(not_equal, ¬_array_function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1408 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1409 | CreateAllocationSiteStub create_stub(isolate); |
| 1410 | CallStubInRecordCallTarget(masm, &create_stub); |
| 1411 | __ jmp(&done_no_smi_convert); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1412 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1413 | __ bind(¬_array_function); |
| 1414 | CreateWeakCellStub weak_cell_stub(isolate); |
| 1415 | CallStubInRecordCallTarget(masm, &weak_cell_stub); |
| 1416 | __ jmp(&done_no_smi_convert); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1417 | |
| 1418 | __ bind(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1419 | __ Integer32ToSmi(rdx, rdx); |
| 1420 | |
| 1421 | __ bind(&done_no_smi_convert); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1422 | } |
| 1423 | |
| 1424 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1425 | void CallConstructStub::Generate(MacroAssembler* masm) { |
| 1426 | // rax : number of arguments |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1427 | // rbx : feedback vector |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1428 | // rdx : slot in feedback vector (Smi) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1429 | // rdi : constructor function |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1430 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1431 | Label non_function; |
| 1432 | // Check that the constructor is not a smi. |
| 1433 | __ JumpIfSmi(rdi, &non_function); |
| 1434 | // Check that constructor is a JSFunction. |
| 1435 | __ CmpObjectType(rdi, JS_FUNCTION_TYPE, r11); |
| 1436 | __ j(not_equal, &non_function); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1437 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1438 | GenerateRecordCallTarget(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1439 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1440 | __ SmiToInteger32(rdx, rdx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1441 | Label feedback_register_initialized; |
| 1442 | // Put the AllocationSite from the feedback vector into rbx, or undefined. |
| 1443 | __ movp(rbx, |
| 1444 | FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize)); |
| 1445 | __ CompareRoot(FieldOperand(rbx, 0), Heap::kAllocationSiteMapRootIndex); |
| 1446 | __ j(equal, &feedback_register_initialized, Label::kNear); |
| 1447 | __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex); |
| 1448 | __ bind(&feedback_register_initialized); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1449 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1450 | __ AssertUndefinedOrAllocationSite(rbx); |
| 1451 | |
| 1452 | // Pass new target to construct stub. |
| 1453 | __ movp(rdx, rdi); |
| 1454 | |
| 1455 | // Tail call to the function-specific construct stub (still in the caller |
| 1456 | // context at this point). |
| 1457 | __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 1458 | __ movp(rcx, FieldOperand(rcx, SharedFunctionInfo::kConstructStubOffset)); |
| 1459 | __ leap(rcx, FieldOperand(rcx, Code::kHeaderSize)); |
| 1460 | __ jmp(rcx); |
| 1461 | |
| 1462 | __ bind(&non_function); |
| 1463 | __ movp(rdx, rdi); |
| 1464 | __ Jump(isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
| 1465 | } |
| 1466 | |
| 1467 | |
| 1468 | void CallICStub::HandleArrayCase(MacroAssembler* masm, Label* miss) { |
| 1469 | // rdi - function |
| 1470 | // rdx - slot id |
| 1471 | // rbx - vector |
| 1472 | // rcx - allocation site (loaded from vector[slot]). |
| 1473 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, r8); |
| 1474 | __ cmpp(rdi, r8); |
| 1475 | __ j(not_equal, miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1476 | |
| 1477 | __ movp(rax, Immediate(arg_count())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1478 | |
| 1479 | // Increment the call count for monomorphic function calls. |
| 1480 | __ SmiAddConstant(FieldOperand(rbx, rdx, times_pointer_size, |
| 1481 | FixedArray::kHeaderSize + kPointerSize), |
| 1482 | Smi::FromInt(CallICNexus::kCallCountIncrement)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1483 | |
| 1484 | __ movp(rbx, rcx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1485 | __ movp(rdx, rdi); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1486 | ArrayConstructorStub stub(masm->isolate(), arg_count()); |
| 1487 | __ TailCallStub(&stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1488 | } |
| 1489 | |
| 1490 | |
| 1491 | void CallICStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1492 | // ----------- S t a t e ------------- |
| 1493 | // -- rdi - function |
| 1494 | // -- rdx - slot id |
| 1495 | // -- rbx - vector |
| 1496 | // ----------------------------------- |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1497 | Isolate* isolate = masm->isolate(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1498 | Label extra_checks_or_miss, call, call_function; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1499 | int argc = arg_count(); |
| 1500 | StackArgumentsAccessor args(rsp, argc); |
| 1501 | ParameterCount actual(argc); |
| 1502 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1503 | // The checks. First, does rdi match the recorded monomorphic target? |
| 1504 | __ SmiToInteger32(rdx, rdx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1505 | __ movp(rcx, |
| 1506 | FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize)); |
| 1507 | |
| 1508 | // We don't know that we have a weak cell. We might have a private symbol |
| 1509 | // or an AllocationSite, but the memory is safe to examine. |
| 1510 | // AllocationSite::kTransitionInfoOffset - contains a Smi or pointer to |
| 1511 | // FixedArray. |
| 1512 | // WeakCell::kValueOffset - contains a JSFunction or Smi(0) |
| 1513 | // Symbol::kHashFieldSlot - if the low bit is 1, then the hash is not |
| 1514 | // computed, meaning that it can't appear to be a pointer. If the low bit is |
| 1515 | // 0, then hash is computed, but the 0 bit prevents the field from appearing |
| 1516 | // to be a pointer. |
| 1517 | STATIC_ASSERT(WeakCell::kSize >= kPointerSize); |
| 1518 | STATIC_ASSERT(AllocationSite::kTransitionInfoOffset == |
| 1519 | WeakCell::kValueOffset && |
| 1520 | WeakCell::kValueOffset == Symbol::kHashFieldSlot); |
| 1521 | |
| 1522 | __ cmpp(rdi, FieldOperand(rcx, WeakCell::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1523 | __ j(not_equal, &extra_checks_or_miss); |
| 1524 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1525 | // The compare above could have been a SMI/SMI comparison. Guard against this |
| 1526 | // convincing us that we have a monomorphic JSFunction. |
| 1527 | __ JumpIfSmi(rdi, &extra_checks_or_miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1528 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1529 | // Increment the call count for monomorphic function calls. |
| 1530 | __ SmiAddConstant(FieldOperand(rbx, rdx, times_pointer_size, |
| 1531 | FixedArray::kHeaderSize + kPointerSize), |
| 1532 | Smi::FromInt(CallICNexus::kCallCountIncrement)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1533 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1534 | __ bind(&call_function); |
| 1535 | __ Set(rax, argc); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1536 | __ Jump(masm->isolate()->builtins()->CallFunction(convert_mode(), |
| 1537 | tail_call_mode()), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1538 | RelocInfo::CODE_TARGET); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1539 | |
| 1540 | __ bind(&extra_checks_or_miss); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1541 | Label uninitialized, miss, not_allocation_site; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1542 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1543 | __ Cmp(rcx, TypeFeedbackVector::MegamorphicSentinel(isolate)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1544 | __ j(equal, &call); |
| 1545 | |
| 1546 | // Check if we have an allocation site. |
| 1547 | __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset), |
| 1548 | Heap::kAllocationSiteMapRootIndex); |
| 1549 | __ j(not_equal, ¬_allocation_site); |
| 1550 | |
| 1551 | // We have an allocation site. |
| 1552 | HandleArrayCase(masm, &miss); |
| 1553 | |
| 1554 | __ bind(¬_allocation_site); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1555 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1556 | // The following cases attempt to handle MISS cases without going to the |
| 1557 | // runtime. |
| 1558 | if (FLAG_trace_ic) { |
| 1559 | __ jmp(&miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1560 | } |
| 1561 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1562 | __ Cmp(rcx, TypeFeedbackVector::UninitializedSentinel(isolate)); |
| 1563 | __ j(equal, &uninitialized); |
| 1564 | |
| 1565 | // We are going megamorphic. If the feedback is a JSFunction, it is fine |
| 1566 | // to handle it here. More complex cases are dealt with in the runtime. |
| 1567 | __ AssertNotSmi(rcx); |
| 1568 | __ CmpObjectType(rcx, JS_FUNCTION_TYPE, rcx); |
| 1569 | __ j(not_equal, &miss); |
| 1570 | __ Move(FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize), |
| 1571 | TypeFeedbackVector::MegamorphicSentinel(isolate)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1572 | |
| 1573 | __ bind(&call); |
| 1574 | __ Set(rax, argc); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1575 | __ Jump(masm->isolate()->builtins()->Call(convert_mode(), tail_call_mode()), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1576 | RelocInfo::CODE_TARGET); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1577 | |
| 1578 | __ bind(&uninitialized); |
| 1579 | |
| 1580 | // We are going monomorphic, provided we actually have a JSFunction. |
| 1581 | __ JumpIfSmi(rdi, &miss); |
| 1582 | |
| 1583 | // Goto miss case if we do not have a function. |
| 1584 | __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); |
| 1585 | __ j(not_equal, &miss); |
| 1586 | |
| 1587 | // Make sure the function is not the Array() function, which requires special |
| 1588 | // behavior on MISS. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1589 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, rcx); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1590 | __ cmpp(rdi, rcx); |
| 1591 | __ j(equal, &miss); |
| 1592 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1593 | // Make sure the function belongs to the same native context. |
| 1594 | __ movp(rcx, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 1595 | __ movp(rcx, ContextOperand(rcx, Context::NATIVE_CONTEXT_INDEX)); |
| 1596 | __ cmpp(rcx, NativeContextOperand()); |
| 1597 | __ j(not_equal, &miss); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1598 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1599 | // Initialize the call counter. |
| 1600 | __ Move(FieldOperand(rbx, rdx, times_pointer_size, |
| 1601 | FixedArray::kHeaderSize + kPointerSize), |
| 1602 | Smi::FromInt(CallICNexus::kCallCountIncrement)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1603 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1604 | // Store the function. Use a stub since we need a frame for allocation. |
| 1605 | // rbx - vector |
| 1606 | // rdx - slot (needs to be in smi form) |
| 1607 | // rdi - function |
| 1608 | { |
| 1609 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1610 | CreateWeakCellStub create_stub(isolate); |
| 1611 | |
| 1612 | __ Integer32ToSmi(rdx, rdx); |
| 1613 | __ Push(rdi); |
| 1614 | __ CallStub(&create_stub); |
| 1615 | __ Pop(rdi); |
| 1616 | } |
| 1617 | |
| 1618 | __ jmp(&call_function); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1619 | |
| 1620 | // We are here because tracing is on or we encountered a MISS case we can't |
| 1621 | // handle here. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1622 | __ bind(&miss); |
| 1623 | GenerateMiss(masm); |
| 1624 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1625 | __ jmp(&call); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1626 | |
| 1627 | // Unreachable |
| 1628 | __ int3(); |
| 1629 | } |
| 1630 | |
| 1631 | |
| 1632 | void CallICStub::GenerateMiss(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1633 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1634 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1635 | // Push the receiver and the function and feedback info. |
| 1636 | __ Push(rdi); |
| 1637 | __ Push(rbx); |
| 1638 | __ Integer32ToSmi(rdx, rdx); |
| 1639 | __ Push(rdx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1640 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1641 | // Call the entry. |
| 1642 | __ CallRuntime(Runtime::kCallIC_Miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1643 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1644 | // Move result to edi and exit the internal frame. |
| 1645 | __ movp(rdi, rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1646 | } |
| 1647 | |
| 1648 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1649 | bool CEntryStub::NeedsImmovableCode() { |
| 1650 | return false; |
| 1651 | } |
| 1652 | |
| 1653 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1654 | void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) { |
| 1655 | CEntryStub::GenerateAheadOfTime(isolate); |
| 1656 | StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(isolate); |
| 1657 | StubFailureTrampolineStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1658 | // It is important that the store buffer overflow stubs are generated first. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1659 | ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate); |
| 1660 | CreateAllocationSiteStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1661 | CreateWeakCellStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1662 | BinaryOpICStub::GenerateAheadOfTime(isolate); |
| 1663 | BinaryOpICWithAllocationSiteStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1664 | StoreFastElementStub::GenerateAheadOfTime(isolate); |
| 1665 | TypeofStub::GenerateAheadOfTime(isolate); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1666 | } |
| 1667 | |
| 1668 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1669 | void CodeStub::GenerateFPStubs(Isolate* isolate) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1670 | } |
| 1671 | |
| 1672 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1673 | void CEntryStub::GenerateAheadOfTime(Isolate* isolate) { |
| 1674 | CEntryStub stub(isolate, 1, kDontSaveFPRegs); |
| 1675 | stub.GetCode(); |
| 1676 | CEntryStub save_doubles(isolate, 1, kSaveFPRegs); |
| 1677 | save_doubles.GetCode(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1678 | } |
| 1679 | |
| 1680 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1681 | void CEntryStub::Generate(MacroAssembler* masm) { |
| 1682 | // rax: number of arguments including receiver |
| 1683 | // rbx: pointer to C function (C callee-saved) |
| 1684 | // rbp: frame pointer of calling JS frame (restored after C call) |
| 1685 | // rsp: stack pointer (restored after C call) |
| 1686 | // rsi: current context (restored) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1687 | // |
| 1688 | // If argv_in_register(): |
| 1689 | // r15: pointer to the first argument |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1690 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1691 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1692 | |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 1693 | #ifdef _WIN64 |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1694 | // Windows 64-bit ABI passes arguments in rcx, rdx, r8, r9. It requires the |
| 1695 | // stack to be aligned to 16 bytes. It only allows a single-word to be |
| 1696 | // returned in register rax. Larger return sizes must be written to an address |
| 1697 | // passed as a hidden first argument. |
| 1698 | const Register kCCallArg0 = rcx; |
| 1699 | const Register kCCallArg1 = rdx; |
| 1700 | const Register kCCallArg2 = r8; |
| 1701 | const Register kCCallArg3 = r9; |
| 1702 | const int kArgExtraStackSpace = 2; |
| 1703 | const int kMaxRegisterResultSize = 1; |
| 1704 | #else |
| 1705 | // GCC / Clang passes arguments in rdi, rsi, rdx, rcx, r8, r9. Simple results |
| 1706 | // are returned in rax, and a struct of two pointers are returned in rax+rdx. |
| 1707 | // Larger return sizes must be written to an address passed as a hidden first |
| 1708 | // argument. |
| 1709 | const Register kCCallArg0 = rdi; |
| 1710 | const Register kCCallArg1 = rsi; |
| 1711 | const Register kCCallArg2 = rdx; |
| 1712 | const Register kCCallArg3 = rcx; |
| 1713 | const int kArgExtraStackSpace = 0; |
| 1714 | const int kMaxRegisterResultSize = 2; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1715 | #endif // _WIN64 |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1716 | |
| 1717 | // Enter the exit frame that transitions from JavaScript to C++. |
| 1718 | int arg_stack_space = |
| 1719 | kArgExtraStackSpace + |
| 1720 | (result_size() <= kMaxRegisterResultSize ? 0 : result_size()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1721 | if (argv_in_register()) { |
| 1722 | DCHECK(!save_doubles()); |
| 1723 | __ EnterApiExitFrame(arg_stack_space); |
| 1724 | // Move argc into r14 (argv is already in r15). |
| 1725 | __ movp(r14, rax); |
| 1726 | } else { |
| 1727 | __ EnterExitFrame(arg_stack_space, save_doubles()); |
| 1728 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1729 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1730 | // rbx: pointer to builtin function (C callee-saved). |
| 1731 | // rbp: frame pointer of exit frame (restored after C call). |
| 1732 | // rsp: stack pointer (restored after C call). |
| 1733 | // r14: number of arguments including receiver (C callee-saved). |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1734 | // r15: argv pointer (C callee-saved). |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1735 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1736 | // Check stack alignment. |
| 1737 | if (FLAG_debug_code) { |
| 1738 | __ CheckStackAlignment(); |
| 1739 | } |
| 1740 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1741 | // Call C function. The arguments object will be created by stubs declared by |
| 1742 | // DECLARE_RUNTIME_FUNCTION(). |
| 1743 | if (result_size() <= kMaxRegisterResultSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1744 | // Pass a pointer to the Arguments object as the first argument. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1745 | // Return result in single register (rax), or a register pair (rax, rdx). |
| 1746 | __ movp(kCCallArg0, r14); // argc. |
| 1747 | __ movp(kCCallArg1, r15); // argv. |
| 1748 | __ Move(kCCallArg2, ExternalReference::isolate_address(isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1749 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1750 | DCHECK_LE(result_size(), 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1751 | // Pass a pointer to the result location as the first argument. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1752 | __ leap(kCCallArg0, StackSpaceOperand(kArgExtraStackSpace)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1753 | // Pass a pointer to the Arguments object as the second argument. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1754 | __ movp(kCCallArg1, r14); // argc. |
| 1755 | __ movp(kCCallArg2, r15); // argv. |
| 1756 | __ Move(kCCallArg3, ExternalReference::isolate_address(isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1757 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1758 | __ call(rbx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1759 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1760 | if (result_size() > kMaxRegisterResultSize) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1761 | // Read result values stored on stack. Result is stored |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1762 | // above the the two Arguments object slots on Win64. |
| 1763 | DCHECK_LE(result_size(), 3); |
| 1764 | __ movq(kReturnRegister0, StackSpaceOperand(kArgExtraStackSpace + 0)); |
| 1765 | __ movq(kReturnRegister1, StackSpaceOperand(kArgExtraStackSpace + 1)); |
| 1766 | if (result_size() > 2) { |
| 1767 | __ movq(kReturnRegister2, StackSpaceOperand(kArgExtraStackSpace + 2)); |
| 1768 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1769 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1770 | // Result is in rax, rdx:rax or r8:rdx:rax - do not destroy these registers! |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1771 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1772 | // Check result for exception sentinel. |
| 1773 | Label exception_returned; |
| 1774 | __ CompareRoot(rax, Heap::kExceptionRootIndex); |
| 1775 | __ j(equal, &exception_returned); |
| 1776 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1777 | // Check that there is no pending exception, otherwise we |
| 1778 | // should have returned the exception sentinel. |
| 1779 | if (FLAG_debug_code) { |
| 1780 | Label okay; |
| 1781 | __ LoadRoot(r14, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1782 | ExternalReference pending_exception_address( |
| 1783 | Isolate::kPendingExceptionAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1784 | Operand pending_exception_operand = |
| 1785 | masm->ExternalOperand(pending_exception_address); |
| 1786 | __ cmpp(r14, pending_exception_operand); |
| 1787 | __ j(equal, &okay, Label::kNear); |
| 1788 | __ int3(); |
| 1789 | __ bind(&okay); |
| 1790 | } |
| 1791 | |
| 1792 | // Exit the JavaScript to C++ exit frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1793 | __ LeaveExitFrame(save_doubles(), !argv_in_register()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1794 | __ ret(0); |
| 1795 | |
| 1796 | // Handling of exception. |
| 1797 | __ bind(&exception_returned); |
| 1798 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1799 | ExternalReference pending_handler_context_address( |
| 1800 | Isolate::kPendingHandlerContextAddress, isolate()); |
| 1801 | ExternalReference pending_handler_code_address( |
| 1802 | Isolate::kPendingHandlerCodeAddress, isolate()); |
| 1803 | ExternalReference pending_handler_offset_address( |
| 1804 | Isolate::kPendingHandlerOffsetAddress, isolate()); |
| 1805 | ExternalReference pending_handler_fp_address( |
| 1806 | Isolate::kPendingHandlerFPAddress, isolate()); |
| 1807 | ExternalReference pending_handler_sp_address( |
| 1808 | Isolate::kPendingHandlerSPAddress, isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1809 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1810 | // Ask the runtime for help to determine the handler. This will set rax to |
| 1811 | // contain the current pending exception, don't clobber it. |
| 1812 | ExternalReference find_handler(Runtime::kUnwindAndFindExceptionHandler, |
| 1813 | isolate()); |
| 1814 | { |
| 1815 | FrameScope scope(masm, StackFrame::MANUAL); |
| 1816 | __ movp(arg_reg_1, Immediate(0)); // argc. |
| 1817 | __ movp(arg_reg_2, Immediate(0)); // argv. |
| 1818 | __ Move(arg_reg_3, ExternalReference::isolate_address(isolate())); |
| 1819 | __ PrepareCallCFunction(3); |
| 1820 | __ CallCFunction(find_handler, 3); |
| 1821 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1822 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1823 | // Retrieve the handler context, SP and FP. |
| 1824 | __ movp(rsi, masm->ExternalOperand(pending_handler_context_address)); |
| 1825 | __ movp(rsp, masm->ExternalOperand(pending_handler_sp_address)); |
| 1826 | __ movp(rbp, masm->ExternalOperand(pending_handler_fp_address)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1827 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1828 | // If the handler is a JS frame, restore the context to the frame. Note that |
| 1829 | // the context will be set to (rsi == 0) for non-JS frames. |
| 1830 | Label skip; |
| 1831 | __ testp(rsi, rsi); |
| 1832 | __ j(zero, &skip, Label::kNear); |
| 1833 | __ movp(Operand(rbp, StandardFrameConstants::kContextOffset), rsi); |
| 1834 | __ bind(&skip); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1835 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1836 | // Compute the handler entry address and jump to it. |
| 1837 | __ movp(rdi, masm->ExternalOperand(pending_handler_code_address)); |
| 1838 | __ movp(rdx, masm->ExternalOperand(pending_handler_offset_address)); |
| 1839 | __ leap(rdi, FieldOperand(rdi, rdx, times_1, Code::kHeaderSize)); |
| 1840 | __ jmp(rdi); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1841 | } |
| 1842 | |
| 1843 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1844 | void JSEntryStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1845 | Label invoke, handler_entry, exit; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1846 | Label not_outermost_js, not_outermost_js_2; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1847 | |
| 1848 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
| 1849 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1850 | { // NOLINT. Scope block confuses linter. |
| 1851 | MacroAssembler::NoRootArrayScope uninitialized_root_register(masm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1852 | // Set up frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1853 | __ pushq(rbp); |
| 1854 | __ movp(rbp, rsp); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1855 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1856 | // Push the stack frame type. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1857 | int marker = type(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1858 | __ Push(Smi::FromInt(marker)); // context slot |
| 1859 | ExternalReference context_address(Isolate::kContextAddress, isolate()); |
| 1860 | __ Load(kScratchRegister, context_address); |
| 1861 | __ Push(kScratchRegister); // context |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1862 | // Save callee-saved registers (X64/X32/Win64 calling conventions). |
| 1863 | __ pushq(r12); |
| 1864 | __ pushq(r13); |
| 1865 | __ pushq(r14); |
| 1866 | __ pushq(r15); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1867 | #ifdef _WIN64 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1868 | __ pushq(rdi); // Only callee save in Win64 ABI, argument in AMD64 ABI. |
| 1869 | __ pushq(rsi); // Only callee save in Win64 ABI, argument in AMD64 ABI. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1870 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1871 | __ pushq(rbx); |
| 1872 | |
| 1873 | #ifdef _WIN64 |
| 1874 | // On Win64 XMM6-XMM15 are callee-save |
| 1875 | __ subp(rsp, Immediate(EntryFrameConstants::kXMMRegistersBlockSize)); |
| 1876 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 0), xmm6); |
| 1877 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 1), xmm7); |
| 1878 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 2), xmm8); |
| 1879 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 3), xmm9); |
| 1880 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 4), xmm10); |
| 1881 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 5), xmm11); |
| 1882 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 6), xmm12); |
| 1883 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 7), xmm13); |
| 1884 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 8), xmm14); |
| 1885 | __ movdqu(Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 9), xmm15); |
| 1886 | #endif |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1887 | |
| 1888 | // Set up the roots and smi constant registers. |
| 1889 | // Needs to be done before any further smi loads. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1890 | __ InitializeRootRegister(); |
| 1891 | } |
| 1892 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1893 | // Save copies of the top frame descriptor on the stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1894 | ExternalReference c_entry_fp(Isolate::kCEntryFPAddress, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1895 | { |
| 1896 | Operand c_entry_fp_operand = masm->ExternalOperand(c_entry_fp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1897 | __ Push(c_entry_fp_operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1898 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1899 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1900 | // If this is the outermost JS call, set js_entry_sp value. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1901 | ExternalReference js_entry_sp(Isolate::kJSEntrySPAddress, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1902 | __ Load(rax, js_entry_sp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1903 | __ testp(rax, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1904 | __ j(not_zero, ¬_outermost_js); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 1905 | __ Push(Smi::FromInt(StackFrame::OUTERMOST_JSENTRY_FRAME)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1906 | __ movp(rax, rbp); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1907 | __ Store(js_entry_sp, rax); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 1908 | Label cont; |
| 1909 | __ jmp(&cont); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1910 | __ bind(¬_outermost_js); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 1911 | __ Push(Smi::FromInt(StackFrame::INNER_JSENTRY_FRAME)); |
| 1912 | __ bind(&cont); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1913 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1914 | // Jump to a faked try block that does the invoke, with a faked catch |
| 1915 | // block that sets the pending exception. |
| 1916 | __ jmp(&invoke); |
| 1917 | __ bind(&handler_entry); |
| 1918 | handler_offset_ = handler_entry.pos(); |
| 1919 | // Caught exception: Store result (exception) in the pending exception |
| 1920 | // field in the JSEnv and return a failure sentinel. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1921 | ExternalReference pending_exception(Isolate::kPendingExceptionAddress, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1922 | isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1923 | __ Store(pending_exception, rax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1924 | __ LoadRoot(rax, Heap::kExceptionRootIndex); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1925 | __ jmp(&exit); |
| 1926 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1927 | // Invoke: Link this frame into the handler chain. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1928 | __ bind(&invoke); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1929 | __ PushStackHandler(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1930 | |
| 1931 | // Clear any pending exceptions. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1932 | __ LoadRoot(rax, Heap::kTheHoleValueRootIndex); |
| 1933 | __ Store(pending_exception, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1934 | |
| 1935 | // Fake a receiver (NULL). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1936 | __ Push(Immediate(0)); // receiver |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1937 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1938 | // Invoke the function by calling through JS entry trampoline builtin and |
| 1939 | // pop the faked function when we return. We load the address from an |
| 1940 | // external reference instead of inlining the call target address directly |
| 1941 | // in the code, because the builtin stubs may not have been generated yet |
| 1942 | // at the time this code is generated. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1943 | if (type() == StackFrame::ENTRY_CONSTRUCT) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1944 | ExternalReference construct_entry(Builtins::kJSConstructEntryTrampoline, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1945 | isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1946 | __ Load(rax, construct_entry); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1947 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1948 | ExternalReference entry(Builtins::kJSEntryTrampoline, isolate()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1949 | __ Load(rax, entry); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1950 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1951 | __ leap(kScratchRegister, FieldOperand(rax, Code::kHeaderSize)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1952 | __ call(kScratchRegister); |
| 1953 | |
| 1954 | // Unlink this frame from the handler chain. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1955 | __ PopStackHandler(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1956 | |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 1957 | __ bind(&exit); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 1958 | // 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] | 1959 | __ Pop(rbx); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 1960 | __ Cmp(rbx, Smi::FromInt(StackFrame::OUTERMOST_JSENTRY_FRAME)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1961 | __ j(not_equal, ¬_outermost_js_2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1962 | __ Move(kScratchRegister, js_entry_sp); |
| 1963 | __ movp(Operand(kScratchRegister, 0), Immediate(0)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1964 | __ bind(¬_outermost_js_2); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1965 | |
| 1966 | // Restore the top frame descriptor from the stack. |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 1967 | { Operand c_entry_fp_operand = masm->ExternalOperand(c_entry_fp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1968 | __ Pop(c_entry_fp_operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1969 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1970 | |
| 1971 | // Restore callee-saved registers (X64 conventions). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1972 | #ifdef _WIN64 |
| 1973 | // On Win64 XMM6-XMM15 are callee-save |
| 1974 | __ movdqu(xmm6, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 0)); |
| 1975 | __ movdqu(xmm7, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 1)); |
| 1976 | __ movdqu(xmm8, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 2)); |
| 1977 | __ movdqu(xmm9, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 3)); |
| 1978 | __ movdqu(xmm10, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 4)); |
| 1979 | __ movdqu(xmm11, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 5)); |
| 1980 | __ movdqu(xmm12, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 6)); |
| 1981 | __ movdqu(xmm13, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 7)); |
| 1982 | __ movdqu(xmm14, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 8)); |
| 1983 | __ movdqu(xmm15, Operand(rsp, EntryFrameConstants::kXMMRegisterSize * 9)); |
| 1984 | __ addp(rsp, Immediate(EntryFrameConstants::kXMMRegistersBlockSize)); |
| 1985 | #endif |
| 1986 | |
| 1987 | __ popq(rbx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1988 | #ifdef _WIN64 |
| 1989 | // Callee save on in Win64 ABI, arguments/volatile in AMD64 ABI. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1990 | __ popq(rsi); |
| 1991 | __ popq(rdi); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1992 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1993 | __ popq(r15); |
| 1994 | __ popq(r14); |
| 1995 | __ popq(r13); |
| 1996 | __ popq(r12); |
| 1997 | __ addp(rsp, Immediate(2 * kPointerSize)); // remove markers |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1998 | |
| 1999 | // Restore frame pointer and return. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2000 | __ popq(rbp); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2001 | __ ret(0); |
| 2002 | } |
| 2003 | |
| 2004 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2005 | // ------------------------------------------------------------------------- |
| 2006 | // StringCharCodeAtGenerator |
| 2007 | |
| 2008 | void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2009 | // If the receiver is a smi trigger the non-string case. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2010 | if (check_mode_ == RECEIVER_IS_UNKNOWN) { |
| 2011 | __ JumpIfSmi(object_, receiver_not_string_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2012 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2013 | // Fetch the instance type of the receiver into result register. |
| 2014 | __ movp(result_, FieldOperand(object_, HeapObject::kMapOffset)); |
| 2015 | __ movzxbl(result_, FieldOperand(result_, Map::kInstanceTypeOffset)); |
| 2016 | // If the receiver is not a string trigger the non-string case. |
| 2017 | __ testb(result_, Immediate(kIsNotStringMask)); |
| 2018 | __ j(not_zero, receiver_not_string_); |
| 2019 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2020 | |
| 2021 | // If the index is non-smi trigger the non-smi case. |
| 2022 | __ JumpIfNotSmi(index_, &index_not_smi_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2023 | __ bind(&got_smi_index_); |
| 2024 | |
| 2025 | // Check for index out of range. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2026 | __ SmiCompare(index_, FieldOperand(object_, String::kLengthOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2027 | __ j(above_equal, index_out_of_range_); |
| 2028 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2029 | __ SmiToInteger32(index_, index_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2030 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2031 | StringCharLoadGenerator::Generate( |
| 2032 | masm, object_, index_, result_, &call_runtime_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2033 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2034 | __ Integer32ToSmi(result_, result_); |
| 2035 | __ bind(&exit_); |
| 2036 | } |
| 2037 | |
| 2038 | |
| 2039 | void StringCharCodeAtGenerator::GenerateSlow( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2040 | MacroAssembler* masm, EmbedMode embed_mode, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2041 | const RuntimeCallHelper& call_helper) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2042 | __ Abort(kUnexpectedFallthroughToCharCodeAtSlowCase); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2043 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2044 | Factory* factory = masm->isolate()->factory(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2045 | // Index is not a smi. |
| 2046 | __ bind(&index_not_smi_); |
| 2047 | // If index is a heap number, try converting it to an integer. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2048 | __ CheckMap(index_, |
| 2049 | factory->heap_number_map(), |
| 2050 | index_not_number_, |
| 2051 | DONT_DO_SMI_CHECK); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2052 | call_helper.BeforeCall(masm); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2053 | if (embed_mode == PART_OF_IC_HANDLER) { |
| 2054 | __ Push(LoadWithVectorDescriptor::VectorRegister()); |
| 2055 | __ Push(LoadDescriptor::SlotRegister()); |
| 2056 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2057 | __ Push(object_); |
| 2058 | __ Push(index_); // Consumed by runtime conversion function. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2059 | if (index_flags_ == STRING_INDEX_IS_NUMBER) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2060 | __ CallRuntime(Runtime::kNumberToIntegerMapMinusZero); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2061 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2062 | DCHECK(index_flags_ == STRING_INDEX_IS_ARRAY_INDEX); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2063 | // NumberToSmi discards numbers that are not exact integers. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2064 | __ CallRuntime(Runtime::kNumberToSmi); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2065 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2066 | if (!index_.is(rax)) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2067 | // Save the conversion result before the pop instructions below |
| 2068 | // have a chance to overwrite it. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2069 | __ movp(index_, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2070 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2071 | __ Pop(object_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2072 | if (embed_mode == PART_OF_IC_HANDLER) { |
| 2073 | __ Pop(LoadDescriptor::SlotRegister()); |
| 2074 | __ Pop(LoadWithVectorDescriptor::VectorRegister()); |
| 2075 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2076 | // Reload the instance type. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2077 | __ movp(result_, FieldOperand(object_, HeapObject::kMapOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2078 | __ movzxbl(result_, FieldOperand(result_, Map::kInstanceTypeOffset)); |
| 2079 | call_helper.AfterCall(masm); |
| 2080 | // 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] | 2081 | __ JumpIfNotSmi(index_, index_out_of_range_); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2082 | // Otherwise, return to the fast path. |
| 2083 | __ jmp(&got_smi_index_); |
| 2084 | |
| 2085 | // Call runtime. We get here when the receiver is a string and the |
| 2086 | // index is a number, but the code of getting the actual character |
| 2087 | // is too complex (e.g., when the string needs to be flattened). |
| 2088 | __ bind(&call_runtime_); |
| 2089 | call_helper.BeforeCall(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2090 | __ Push(object_); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2091 | __ Integer32ToSmi(index_, index_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2092 | __ Push(index_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2093 | __ CallRuntime(Runtime::kStringCharCodeAtRT); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2094 | if (!result_.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2095 | __ movp(result_, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2096 | } |
| 2097 | call_helper.AfterCall(masm); |
| 2098 | __ jmp(&exit_); |
| 2099 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2100 | __ Abort(kUnexpectedFallthroughFromCharCodeAtSlowCase); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2101 | } |
| 2102 | |
| 2103 | |
| 2104 | // ------------------------------------------------------------------------- |
| 2105 | // StringCharFromCodeGenerator |
| 2106 | |
| 2107 | void StringCharFromCodeGenerator::GenerateFast(MacroAssembler* masm) { |
| 2108 | // Fast case of Heap::LookupSingleCharacterStringFromCode. |
| 2109 | __ JumpIfNotSmi(code_, &slow_case_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2110 | __ SmiCompare(code_, Smi::FromInt(String::kMaxOneByteCharCode)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2111 | __ j(above, &slow_case_); |
| 2112 | |
| 2113 | __ LoadRoot(result_, Heap::kSingleCharacterStringCacheRootIndex); |
| 2114 | SmiIndex index = masm->SmiToIndex(kScratchRegister, code_, kPointerSizeLog2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2115 | __ movp(result_, FieldOperand(result_, index.reg, index.scale, |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2116 | FixedArray::kHeaderSize)); |
| 2117 | __ CompareRoot(result_, Heap::kUndefinedValueRootIndex); |
| 2118 | __ j(equal, &slow_case_); |
| 2119 | __ bind(&exit_); |
| 2120 | } |
| 2121 | |
| 2122 | |
| 2123 | void StringCharFromCodeGenerator::GenerateSlow( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2124 | MacroAssembler* masm, |
| 2125 | const RuntimeCallHelper& call_helper) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2126 | __ Abort(kUnexpectedFallthroughToCharFromCodeSlowCase); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2127 | |
| 2128 | __ bind(&slow_case_); |
| 2129 | call_helper.BeforeCall(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2130 | __ Push(code_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2131 | __ CallRuntime(Runtime::kStringCharFromCode); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2132 | if (!result_.is(rax)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2133 | __ movp(result_, rax); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2134 | } |
| 2135 | call_helper.AfterCall(masm); |
| 2136 | __ jmp(&exit_); |
| 2137 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2138 | __ Abort(kUnexpectedFallthroughFromCharFromCodeSlowCase); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2139 | } |
| 2140 | |
| 2141 | |
| 2142 | void StringHelper::GenerateCopyCharacters(MacroAssembler* masm, |
| 2143 | Register dest, |
| 2144 | Register src, |
| 2145 | Register count, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2146 | String::Encoding encoding) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2147 | // Nothing to do for zero characters. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2148 | Label done; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2149 | __ testl(count, count); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2150 | __ j(zero, &done, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2151 | |
| 2152 | // Make count the number of bytes to copy. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2153 | if (encoding == String::TWO_BYTE_ENCODING) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2154 | STATIC_ASSERT(2 == sizeof(uc16)); |
| 2155 | __ addl(count, count); |
| 2156 | } |
| 2157 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2158 | // Copy remaining characters. |
| 2159 | Label loop; |
| 2160 | __ bind(&loop); |
| 2161 | __ movb(kScratchRegister, Operand(src, 0)); |
| 2162 | __ movb(Operand(dest, 0), kScratchRegister); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2163 | __ incp(src); |
| 2164 | __ incp(dest); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2165 | __ decl(count); |
| 2166 | __ j(not_zero, &loop); |
| 2167 | |
| 2168 | __ bind(&done); |
| 2169 | } |
| 2170 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2171 | |
| 2172 | void SubStringStub::Generate(MacroAssembler* masm) { |
| 2173 | Label runtime; |
| 2174 | |
| 2175 | // Stack frame on entry. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2176 | // rsp[0] : return address |
| 2177 | // rsp[8] : to |
| 2178 | // rsp[16] : from |
| 2179 | // rsp[24] : string |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2180 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2181 | enum SubStringStubArgumentIndices { |
| 2182 | STRING_ARGUMENT_INDEX, |
| 2183 | FROM_ARGUMENT_INDEX, |
| 2184 | TO_ARGUMENT_INDEX, |
| 2185 | SUB_STRING_ARGUMENT_COUNT |
| 2186 | }; |
| 2187 | |
| 2188 | StackArgumentsAccessor args(rsp, SUB_STRING_ARGUMENT_COUNT, |
| 2189 | ARGUMENTS_DONT_CONTAIN_RECEIVER); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2190 | |
| 2191 | // Make sure first argument is a string. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2192 | __ movp(rax, args.GetArgumentOperand(STRING_ARGUMENT_INDEX)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2193 | STATIC_ASSERT(kSmiTag == 0); |
| 2194 | __ testl(rax, Immediate(kSmiTagMask)); |
| 2195 | __ j(zero, &runtime); |
| 2196 | Condition is_string = masm->IsObjectStringType(rax, rbx, rbx); |
| 2197 | __ j(NegateCondition(is_string), &runtime); |
| 2198 | |
| 2199 | // rax: string |
| 2200 | // rbx: instance type |
| 2201 | // Calculate length of sub string using the smi values. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2202 | __ movp(rcx, args.GetArgumentOperand(TO_ARGUMENT_INDEX)); |
| 2203 | __ movp(rdx, args.GetArgumentOperand(FROM_ARGUMENT_INDEX)); |
Ben Murdoch | f87a203 | 2010-10-22 12:50:53 +0100 | [diff] [blame] | 2204 | __ JumpUnlessBothNonNegativeSmi(rcx, rdx, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2205 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2206 | __ SmiSub(rcx, rcx, rdx); // Overflow doesn't happen. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2207 | __ cmpp(rcx, FieldOperand(rax, String::kLengthOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2208 | Label not_original_string; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2209 | // Shorter than original string's length: an actual substring. |
| 2210 | __ j(below, ¬_original_string, Label::kNear); |
| 2211 | // Longer than original string's length or negative: unsafe arguments. |
| 2212 | __ j(above, &runtime); |
| 2213 | // Return original string. |
| 2214 | Counters* counters = isolate()->counters(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2215 | __ IncrementCounter(counters->sub_string_native(), 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2216 | __ ret(SUB_STRING_ARGUMENT_COUNT * kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2217 | __ bind(¬_original_string); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2218 | |
| 2219 | Label single_char; |
| 2220 | __ SmiCompare(rcx, Smi::FromInt(1)); |
| 2221 | __ j(equal, &single_char); |
| 2222 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2223 | __ SmiToInteger32(rcx, rcx); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2224 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2225 | // rax: string |
| 2226 | // rbx: instance type |
| 2227 | // rcx: sub string length |
| 2228 | // rdx: from index (smi) |
| 2229 | // Deal with different string types: update the index if necessary |
| 2230 | // and put the underlying string into edi. |
| 2231 | Label underlying_unpacked, sliced_string, seq_or_external_string; |
| 2232 | // If the string is not indirect, it can only be sequential or external. |
| 2233 | STATIC_ASSERT(kIsIndirectStringMask == (kSlicedStringTag & kConsStringTag)); |
| 2234 | STATIC_ASSERT(kIsIndirectStringMask != 0); |
| 2235 | __ testb(rbx, Immediate(kIsIndirectStringMask)); |
| 2236 | __ j(zero, &seq_or_external_string, Label::kNear); |
| 2237 | |
| 2238 | __ testb(rbx, Immediate(kSlicedNotConsMask)); |
| 2239 | __ j(not_zero, &sliced_string, Label::kNear); |
| 2240 | // Cons string. Check whether it is flat, then fetch first part. |
| 2241 | // Flat cons strings have an empty second part. |
| 2242 | __ CompareRoot(FieldOperand(rax, ConsString::kSecondOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2243 | Heap::kempty_stringRootIndex); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2244 | __ j(not_equal, &runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2245 | __ movp(rdi, FieldOperand(rax, ConsString::kFirstOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2246 | // Update instance type. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2247 | __ movp(rbx, FieldOperand(rdi, HeapObject::kMapOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2248 | __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2249 | __ jmp(&underlying_unpacked, Label::kNear); |
| 2250 | |
| 2251 | __ bind(&sliced_string); |
| 2252 | // Sliced string. Fetch parent and correct start index by offset. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2253 | __ addp(rdx, FieldOperand(rax, SlicedString::kOffsetOffset)); |
| 2254 | __ movp(rdi, FieldOperand(rax, SlicedString::kParentOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2255 | // Update instance type. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2256 | __ movp(rbx, FieldOperand(rdi, HeapObject::kMapOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2257 | __ movzxbl(rbx, FieldOperand(rbx, Map::kInstanceTypeOffset)); |
| 2258 | __ jmp(&underlying_unpacked, Label::kNear); |
| 2259 | |
| 2260 | __ bind(&seq_or_external_string); |
| 2261 | // Sequential or external string. Just move string to the correct register. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2262 | __ movp(rdi, rax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2263 | |
| 2264 | __ bind(&underlying_unpacked); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2265 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2266 | if (FLAG_string_slices) { |
| 2267 | Label copy_routine; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2268 | // rdi: underlying subject string |
| 2269 | // rbx: instance type of underlying subject string |
| 2270 | // rdx: adjusted start index (smi) |
| 2271 | // rcx: length |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2272 | // If coming from the make_two_character_string path, the string |
| 2273 | // is too short to be sliced anyways. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2274 | __ cmpp(rcx, Immediate(SlicedString::kMinLength)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2275 | // Short slice. Copy instead of slicing. |
| 2276 | __ j(less, ©_routine); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2277 | // Allocate new sliced string. At this point we do not reload the instance |
| 2278 | // type including the string encoding because we simply rely on the info |
| 2279 | // provided by the original string. It does not matter if the original |
| 2280 | // string's encoding is wrong because we always have to recheck encoding of |
| 2281 | // the newly created string's parent anyways due to externalized strings. |
| 2282 | Label two_byte_slice, set_slice_header; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2283 | STATIC_ASSERT((kStringEncodingMask & kOneByteStringTag) != 0); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2284 | STATIC_ASSERT((kStringEncodingMask & kTwoByteStringTag) == 0); |
| 2285 | __ testb(rbx, Immediate(kStringEncodingMask)); |
| 2286 | __ j(zero, &two_byte_slice, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2287 | __ AllocateOneByteSlicedString(rax, rbx, r14, &runtime); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2288 | __ jmp(&set_slice_header, Label::kNear); |
| 2289 | __ bind(&two_byte_slice); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2290 | __ AllocateTwoByteSlicedString(rax, rbx, r14, &runtime); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2291 | __ bind(&set_slice_header); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2292 | __ Integer32ToSmi(rcx, rcx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2293 | __ movp(FieldOperand(rax, SlicedString::kLengthOffset), rcx); |
| 2294 | __ movp(FieldOperand(rax, SlicedString::kHashFieldOffset), |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2295 | Immediate(String::kEmptyHashField)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2296 | __ movp(FieldOperand(rax, SlicedString::kParentOffset), rdi); |
| 2297 | __ movp(FieldOperand(rax, SlicedString::kOffsetOffset), rdx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2298 | __ IncrementCounter(counters->sub_string_native(), 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2299 | __ ret(3 * kPointerSize); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2300 | |
| 2301 | __ bind(©_routine); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 2302 | } |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2303 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2304 | // rdi: underlying subject string |
| 2305 | // rbx: instance type of underlying subject string |
| 2306 | // rdx: adjusted start index (smi) |
| 2307 | // rcx: length |
| 2308 | // The subject string can only be external or sequential string of either |
| 2309 | // encoding at this point. |
| 2310 | Label two_byte_sequential, sequential_string; |
| 2311 | STATIC_ASSERT(kExternalStringTag != 0); |
| 2312 | STATIC_ASSERT(kSeqStringTag == 0); |
| 2313 | __ testb(rbx, Immediate(kExternalStringTag)); |
| 2314 | __ j(zero, &sequential_string); |
| 2315 | |
| 2316 | // Handle external string. |
| 2317 | // Rule out short external strings. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2318 | STATIC_ASSERT(kShortExternalStringTag != 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2319 | __ testb(rbx, Immediate(kShortExternalStringMask)); |
| 2320 | __ j(not_zero, &runtime); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2321 | __ movp(rdi, FieldOperand(rdi, ExternalString::kResourceDataOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2322 | // 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] | 2323 | STATIC_ASSERT(SeqTwoByteString::kHeaderSize == SeqOneByteString::kHeaderSize); |
| 2324 | __ subp(rdi, Immediate(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2325 | |
| 2326 | __ bind(&sequential_string); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2327 | STATIC_ASSERT((kOneByteStringTag & kStringEncodingMask) != 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2328 | __ testb(rbx, Immediate(kStringEncodingMask)); |
| 2329 | __ j(zero, &two_byte_sequential); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2330 | |
| 2331 | // Allocate the result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2332 | __ AllocateOneByteString(rax, rcx, r11, r14, r15, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2333 | |
| 2334 | // rax: result string |
| 2335 | // rcx: result string length |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2336 | { // Locate character of sub string start. |
| 2337 | SmiIndex smi_as_index = masm->SmiToIndex(rdx, rdx, times_1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2338 | __ leap(r14, Operand(rdi, smi_as_index.reg, smi_as_index.scale, |
| 2339 | SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 2340 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2341 | // Locate first character of result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2342 | __ leap(rdi, FieldOperand(rax, SeqOneByteString::kHeaderSize)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2343 | |
| 2344 | // rax: result string |
| 2345 | // rcx: result length |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2346 | // r14: first character of result |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2347 | // rsi: character of sub string start |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2348 | StringHelper::GenerateCopyCharacters( |
| 2349 | masm, rdi, r14, rcx, String::ONE_BYTE_ENCODING); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2350 | __ IncrementCounter(counters->sub_string_native(), 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2351 | __ ret(SUB_STRING_ARGUMENT_COUNT * kPointerSize); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2352 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2353 | __ bind(&two_byte_sequential); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2354 | // Allocate the result. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2355 | __ AllocateTwoByteString(rax, rcx, r11, r14, r15, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2356 | |
| 2357 | // rax: result string |
| 2358 | // rcx: result string length |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2359 | { // Locate character of sub string start. |
| 2360 | SmiIndex smi_as_index = masm->SmiToIndex(rdx, rdx, times_2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2361 | __ leap(r14, Operand(rdi, smi_as_index.reg, smi_as_index.scale, |
| 2362 | SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 2363 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2364 | // Locate first character of result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2365 | __ leap(rdi, FieldOperand(rax, SeqTwoByteString::kHeaderSize)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2366 | |
| 2367 | // rax: result string |
| 2368 | // rcx: result length |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2369 | // rdi: first character of result |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2370 | // r14: character of sub string start |
| 2371 | StringHelper::GenerateCopyCharacters( |
| 2372 | masm, rdi, r14, rcx, String::TWO_BYTE_ENCODING); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2373 | __ IncrementCounter(counters->sub_string_native(), 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2374 | __ ret(SUB_STRING_ARGUMENT_COUNT * kPointerSize); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2375 | |
| 2376 | // Just jump to runtime to create the sub string. |
| 2377 | __ bind(&runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2378 | __ TailCallRuntime(Runtime::kSubString); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2379 | |
| 2380 | __ bind(&single_char); |
| 2381 | // rax: string |
| 2382 | // rbx: instance type |
| 2383 | // rcx: sub string length (smi) |
| 2384 | // rdx: from index (smi) |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2385 | StringCharAtGenerator generator(rax, rdx, rcx, rax, &runtime, &runtime, |
| 2386 | &runtime, STRING_INDEX_IS_NUMBER, |
| 2387 | RECEIVER_IS_STRING); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2388 | generator.GenerateFast(masm); |
| 2389 | __ ret(SUB_STRING_ARGUMENT_COUNT * kPointerSize); |
| 2390 | generator.SkipSlow(masm, &runtime); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2391 | } |
| 2392 | |
| 2393 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2394 | void ToNumberStub::Generate(MacroAssembler* masm) { |
| 2395 | // The ToNumber stub takes one argument in rax. |
| 2396 | Label not_smi; |
| 2397 | __ JumpIfNotSmi(rax, ¬_smi, Label::kNear); |
| 2398 | __ Ret(); |
| 2399 | __ bind(¬_smi); |
| 2400 | |
| 2401 | Label not_heap_number; |
| 2402 | __ CompareRoot(FieldOperand(rax, HeapObject::kMapOffset), |
| 2403 | Heap::kHeapNumberMapRootIndex); |
| 2404 | __ j(not_equal, ¬_heap_number, Label::kNear); |
| 2405 | __ Ret(); |
| 2406 | __ bind(¬_heap_number); |
| 2407 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2408 | NonNumberToNumberStub stub(masm->isolate()); |
| 2409 | __ TailCallStub(&stub); |
| 2410 | } |
| 2411 | |
| 2412 | void NonNumberToNumberStub::Generate(MacroAssembler* masm) { |
| 2413 | // The NonNumberToNumber stub takes one argument in rax. |
| 2414 | __ AssertNotNumber(rax); |
| 2415 | |
| 2416 | Label not_string; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2417 | __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdi); |
| 2418 | // rax: object |
| 2419 | // rdi: object map |
| 2420 | __ j(above_equal, ¬_string, Label::kNear); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2421 | StringToNumberStub stub(masm->isolate()); |
| 2422 | __ TailCallStub(&stub); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2423 | __ bind(¬_string); |
| 2424 | |
| 2425 | Label not_oddball; |
| 2426 | __ CmpInstanceType(rdi, ODDBALL_TYPE); |
| 2427 | __ j(not_equal, ¬_oddball, Label::kNear); |
| 2428 | __ movp(rax, FieldOperand(rax, Oddball::kToNumberOffset)); |
| 2429 | __ Ret(); |
| 2430 | __ bind(¬_oddball); |
| 2431 | |
| 2432 | __ PopReturnAddressTo(rcx); // Pop return address. |
| 2433 | __ Push(rax); // Push argument. |
| 2434 | __ PushReturnAddressFrom(rcx); // Push return address. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2435 | __ TailCallRuntime(Runtime::kToNumber); |
| 2436 | } |
| 2437 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2438 | void StringToNumberStub::Generate(MacroAssembler* masm) { |
| 2439 | // The StringToNumber stub takes one argument in rax. |
| 2440 | __ AssertString(rax); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2441 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2442 | // Check if string has a cached array index. |
| 2443 | Label runtime; |
| 2444 | __ testl(FieldOperand(rax, String::kHashFieldOffset), |
| 2445 | Immediate(String::kContainsCachedArrayIndexMask)); |
| 2446 | __ j(not_zero, &runtime, Label::kNear); |
| 2447 | __ movl(rax, FieldOperand(rax, String::kHashFieldOffset)); |
| 2448 | __ IndexFromHash(rax, rax); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2449 | __ Ret(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2450 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2451 | __ bind(&runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2452 | __ PopReturnAddressTo(rcx); // Pop return address. |
| 2453 | __ Push(rax); // Push argument. |
| 2454 | __ PushReturnAddressFrom(rcx); // Push return address. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2455 | __ TailCallRuntime(Runtime::kStringToNumber); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2456 | } |
| 2457 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2458 | void ToStringStub::Generate(MacroAssembler* masm) { |
| 2459 | // The ToString stub takes one argument in rax. |
| 2460 | Label is_number; |
| 2461 | __ JumpIfSmi(rax, &is_number, Label::kNear); |
| 2462 | |
| 2463 | Label not_string; |
| 2464 | __ CmpObjectType(rax, FIRST_NONSTRING_TYPE, rdi); |
| 2465 | // rax: receiver |
| 2466 | // rdi: receiver map |
| 2467 | __ j(above_equal, ¬_string, Label::kNear); |
| 2468 | __ Ret(); |
| 2469 | __ bind(¬_string); |
| 2470 | |
| 2471 | Label not_heap_number; |
| 2472 | __ CompareRoot(rdi, Heap::kHeapNumberMapRootIndex); |
| 2473 | __ j(not_equal, ¬_heap_number, Label::kNear); |
| 2474 | __ bind(&is_number); |
| 2475 | NumberToStringStub stub(isolate()); |
| 2476 | __ TailCallStub(&stub); |
| 2477 | __ bind(¬_heap_number); |
| 2478 | |
| 2479 | Label not_oddball; |
| 2480 | __ CmpInstanceType(rdi, ODDBALL_TYPE); |
| 2481 | __ j(not_equal, ¬_oddball, Label::kNear); |
| 2482 | __ movp(rax, FieldOperand(rax, Oddball::kToStringOffset)); |
| 2483 | __ Ret(); |
| 2484 | __ bind(¬_oddball); |
| 2485 | |
| 2486 | __ PopReturnAddressTo(rcx); // Pop return address. |
| 2487 | __ Push(rax); // Push argument. |
| 2488 | __ PushReturnAddressFrom(rcx); // Push return address. |
| 2489 | __ TailCallRuntime(Runtime::kToString); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2490 | } |
| 2491 | |
| 2492 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2493 | void ToNameStub::Generate(MacroAssembler* masm) { |
| 2494 | // The ToName stub takes one argument in rax. |
| 2495 | Label is_number; |
| 2496 | __ JumpIfSmi(rax, &is_number, Label::kNear); |
| 2497 | |
| 2498 | Label not_name; |
| 2499 | STATIC_ASSERT(FIRST_NAME_TYPE == FIRST_TYPE); |
| 2500 | __ CmpObjectType(rax, LAST_NAME_TYPE, rdi); |
| 2501 | // rax: receiver |
| 2502 | // rdi: receiver map |
| 2503 | __ j(above, ¬_name, Label::kNear); |
| 2504 | __ Ret(); |
| 2505 | __ bind(¬_name); |
| 2506 | |
| 2507 | Label not_heap_number; |
| 2508 | __ CompareRoot(rdi, Heap::kHeapNumberMapRootIndex); |
| 2509 | __ j(not_equal, ¬_heap_number, Label::kNear); |
| 2510 | __ bind(&is_number); |
| 2511 | NumberToStringStub stub(isolate()); |
| 2512 | __ TailCallStub(&stub); |
| 2513 | __ bind(¬_heap_number); |
| 2514 | |
| 2515 | Label not_oddball; |
| 2516 | __ CmpInstanceType(rdi, ODDBALL_TYPE); |
| 2517 | __ j(not_equal, ¬_oddball, Label::kNear); |
| 2518 | __ movp(rax, FieldOperand(rax, Oddball::kToStringOffset)); |
| 2519 | __ Ret(); |
| 2520 | __ bind(¬_oddball); |
| 2521 | |
| 2522 | __ PopReturnAddressTo(rcx); // Pop return address. |
| 2523 | __ Push(rax); // Push argument. |
| 2524 | __ PushReturnAddressFrom(rcx); // Push return address. |
| 2525 | __ TailCallRuntime(Runtime::kToName); |
| 2526 | } |
| 2527 | |
| 2528 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2529 | void StringHelper::GenerateFlatOneByteStringEquals(MacroAssembler* masm, |
| 2530 | Register left, |
| 2531 | Register right, |
| 2532 | Register scratch1, |
| 2533 | Register scratch2) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2534 | Register length = scratch1; |
| 2535 | |
| 2536 | // Compare lengths. |
| 2537 | Label check_zero_length; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2538 | __ movp(length, FieldOperand(left, String::kLengthOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2539 | __ SmiCompare(length, FieldOperand(right, String::kLengthOffset)); |
| 2540 | __ j(equal, &check_zero_length, Label::kNear); |
| 2541 | __ Move(rax, Smi::FromInt(NOT_EQUAL)); |
| 2542 | __ ret(0); |
| 2543 | |
| 2544 | // Check if the length is zero. |
| 2545 | Label compare_chars; |
| 2546 | __ bind(&check_zero_length); |
| 2547 | STATIC_ASSERT(kSmiTag == 0); |
| 2548 | __ SmiTest(length); |
| 2549 | __ j(not_zero, &compare_chars, Label::kNear); |
| 2550 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 2551 | __ ret(0); |
| 2552 | |
| 2553 | // Compare characters. |
| 2554 | __ bind(&compare_chars); |
| 2555 | Label strings_not_equal; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2556 | GenerateOneByteCharsCompareLoop(masm, left, right, length, scratch2, |
| 2557 | &strings_not_equal, Label::kNear); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2558 | |
| 2559 | // Characters are equal. |
| 2560 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 2561 | __ ret(0); |
| 2562 | |
| 2563 | // Characters are not equal. |
| 2564 | __ bind(&strings_not_equal); |
| 2565 | __ Move(rax, Smi::FromInt(NOT_EQUAL)); |
| 2566 | __ ret(0); |
| 2567 | } |
| 2568 | |
| 2569 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2570 | void StringHelper::GenerateCompareFlatOneByteStrings( |
| 2571 | MacroAssembler* masm, Register left, Register right, Register scratch1, |
| 2572 | Register scratch2, Register scratch3, Register scratch4) { |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2573 | // Ensure that you can always subtract a string length from a non-negative |
| 2574 | // number (e.g. another length). |
| 2575 | STATIC_ASSERT(String::kMaxLength < 0x7fffffff); |
| 2576 | |
| 2577 | // Find minimum length and length difference. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2578 | __ movp(scratch1, FieldOperand(left, String::kLengthOffset)); |
| 2579 | __ movp(scratch4, scratch1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2580 | __ SmiSub(scratch4, |
| 2581 | scratch4, |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2582 | FieldOperand(right, String::kLengthOffset)); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2583 | // Register scratch4 now holds left.length - right.length. |
| 2584 | const Register length_difference = scratch4; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2585 | Label left_shorter; |
| 2586 | __ j(less, &left_shorter, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2587 | // The right string isn't longer that the left one. |
| 2588 | // Get the right string's length by subtracting the (non-negative) difference |
| 2589 | // from the left string's length. |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 2590 | __ SmiSub(scratch1, scratch1, length_difference); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2591 | __ bind(&left_shorter); |
| 2592 | // Register scratch1 now holds Min(left.length, right.length). |
| 2593 | const Register min_length = scratch1; |
| 2594 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2595 | Label compare_lengths; |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2596 | // If min-length is zero, go directly to comparing lengths. |
| 2597 | __ SmiTest(min_length); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2598 | __ j(zero, &compare_lengths, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2599 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2600 | // Compare loop. |
| 2601 | Label result_not_equal; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2602 | GenerateOneByteCharsCompareLoop( |
| 2603 | masm, left, right, min_length, scratch2, &result_not_equal, |
| 2604 | // In debug-code mode, SmiTest below might push |
| 2605 | // the target label outside the near range. |
| 2606 | Label::kFar); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2607 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2608 | // Completed loop without finding different characters. |
| 2609 | // Compare lengths (precomputed). |
| 2610 | __ bind(&compare_lengths); |
| 2611 | __ SmiTest(length_difference); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2612 | Label length_not_equal; |
| 2613 | __ j(not_zero, &length_not_equal, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2614 | |
| 2615 | // Result is EQUAL. |
| 2616 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 2617 | __ ret(0); |
| 2618 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2619 | Label result_greater; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2620 | Label result_less; |
| 2621 | __ bind(&length_not_equal); |
| 2622 | __ j(greater, &result_greater, Label::kNear); |
| 2623 | __ jmp(&result_less, Label::kNear); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2624 | __ bind(&result_not_equal); |
| 2625 | // Unequal comparison of left to right, either character or length. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2626 | __ j(above, &result_greater, Label::kNear); |
| 2627 | __ bind(&result_less); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 2628 | |
| 2629 | // Result is LESS. |
| 2630 | __ Move(rax, Smi::FromInt(LESS)); |
| 2631 | __ ret(0); |
| 2632 | |
| 2633 | // Result is GREATER. |
| 2634 | __ bind(&result_greater); |
| 2635 | __ Move(rax, Smi::FromInt(GREATER)); |
| 2636 | __ ret(0); |
| 2637 | } |
| 2638 | |
| 2639 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2640 | void StringHelper::GenerateOneByteCharsCompareLoop( |
| 2641 | MacroAssembler* masm, Register left, Register right, Register length, |
| 2642 | Register scratch, Label* chars_not_equal, Label::Distance near_jump) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2643 | // Change index to run from -length to -1 by adding length to string |
| 2644 | // start. This means that loop ends when index reaches zero, which |
| 2645 | // doesn't need an additional compare. |
| 2646 | __ SmiToInteger32(length, length); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2647 | __ leap(left, |
| 2648 | FieldOperand(left, length, times_1, SeqOneByteString::kHeaderSize)); |
| 2649 | __ leap(right, |
| 2650 | FieldOperand(right, length, times_1, SeqOneByteString::kHeaderSize)); |
| 2651 | __ negq(length); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2652 | Register index = length; // index = -length; |
| 2653 | |
| 2654 | // Compare loop. |
| 2655 | Label loop; |
| 2656 | __ bind(&loop); |
| 2657 | __ movb(scratch, Operand(left, index, times_1, 0)); |
| 2658 | __ cmpb(scratch, Operand(right, index, times_1, 0)); |
| 2659 | __ j(not_equal, chars_not_equal, near_jump); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2660 | __ incq(index); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2661 | __ j(not_zero, &loop); |
| 2662 | } |
| 2663 | |
| 2664 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2665 | void BinaryOpICWithAllocationSiteStub::Generate(MacroAssembler* masm) { |
| 2666 | // ----------- S t a t e ------------- |
| 2667 | // -- rdx : left |
| 2668 | // -- rax : right |
| 2669 | // -- rsp[0] : return address |
| 2670 | // ----------------------------------- |
| 2671 | |
| 2672 | // Load rcx with the allocation site. We stick an undefined dummy value here |
| 2673 | // and replace it with the real allocation site later when we instantiate this |
| 2674 | // stub in BinaryOpICWithAllocationSiteStub::GetCodeCopyFromTemplate(). |
| 2675 | __ Move(rcx, handle(isolate()->heap()->undefined_value())); |
| 2676 | |
| 2677 | // Make sure that we actually patched the allocation site. |
| 2678 | if (FLAG_debug_code) { |
| 2679 | __ testb(rcx, Immediate(kSmiTagMask)); |
| 2680 | __ Assert(not_equal, kExpectedAllocationSite); |
| 2681 | __ Cmp(FieldOperand(rcx, HeapObject::kMapOffset), |
| 2682 | isolate()->factory()->allocation_site_map()); |
| 2683 | __ Assert(equal, kExpectedAllocationSite); |
| 2684 | } |
| 2685 | |
| 2686 | // Tail call into the stub that handles binary operations with allocation |
| 2687 | // sites. |
| 2688 | BinaryOpWithAllocationSiteStub stub(isolate(), state()); |
| 2689 | __ TailCallStub(&stub); |
| 2690 | } |
| 2691 | |
| 2692 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2693 | void CompareICStub::GenerateBooleans(MacroAssembler* masm) { |
| 2694 | DCHECK_EQ(CompareICState::BOOLEAN, state()); |
| 2695 | Label miss; |
| 2696 | Label::Distance const miss_distance = |
| 2697 | masm->emit_debug_code() ? Label::kFar : Label::kNear; |
| 2698 | |
| 2699 | __ JumpIfSmi(rdx, &miss, miss_distance); |
| 2700 | __ movp(rcx, FieldOperand(rdx, HeapObject::kMapOffset)); |
| 2701 | __ JumpIfSmi(rax, &miss, miss_distance); |
| 2702 | __ movp(rbx, FieldOperand(rax, HeapObject::kMapOffset)); |
| 2703 | __ JumpIfNotRoot(rcx, Heap::kBooleanMapRootIndex, &miss, miss_distance); |
| 2704 | __ JumpIfNotRoot(rbx, Heap::kBooleanMapRootIndex, &miss, miss_distance); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2705 | if (!Token::IsEqualityOp(op())) { |
| 2706 | __ movp(rax, FieldOperand(rax, Oddball::kToNumberOffset)); |
| 2707 | __ AssertSmi(rax); |
| 2708 | __ movp(rdx, FieldOperand(rdx, Oddball::kToNumberOffset)); |
| 2709 | __ AssertSmi(rdx); |
| 2710 | __ pushq(rax); |
| 2711 | __ movq(rax, rdx); |
| 2712 | __ popq(rdx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2713 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2714 | __ subp(rax, rdx); |
| 2715 | __ Ret(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2716 | |
| 2717 | __ bind(&miss); |
| 2718 | GenerateMiss(masm); |
| 2719 | } |
| 2720 | |
| 2721 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2722 | void CompareICStub::GenerateSmis(MacroAssembler* masm) { |
| 2723 | DCHECK(state() == CompareICState::SMI); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2724 | Label miss; |
| 2725 | __ JumpIfNotBothSmi(rdx, rax, &miss, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2726 | |
| 2727 | if (GetCondition() == equal) { |
| 2728 | // For equality we do not care about the sign of the result. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2729 | __ subp(rax, rdx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2730 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2731 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2732 | __ subp(rdx, rax); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2733 | __ j(no_overflow, &done, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2734 | // Correct sign of result in case of overflow. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2735 | __ notp(rdx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2736 | __ bind(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2737 | __ movp(rax, rdx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2738 | } |
| 2739 | __ ret(0); |
| 2740 | |
| 2741 | __ bind(&miss); |
| 2742 | GenerateMiss(masm); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2743 | } |
| 2744 | |
| 2745 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2746 | void CompareICStub::GenerateNumbers(MacroAssembler* masm) { |
| 2747 | DCHECK(state() == CompareICState::NUMBER); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2748 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2749 | Label generic_stub; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2750 | Label unordered, maybe_undefined1, maybe_undefined2; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2751 | Label miss; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2752 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2753 | if (left() == CompareICState::SMI) { |
| 2754 | __ JumpIfNotSmi(rdx, &miss); |
| 2755 | } |
| 2756 | if (right() == CompareICState::SMI) { |
| 2757 | __ JumpIfNotSmi(rax, &miss); |
| 2758 | } |
| 2759 | |
| 2760 | // Load left and right operand. |
| 2761 | Label done, left, left_smi, right_smi; |
| 2762 | __ JumpIfSmi(rax, &right_smi, Label::kNear); |
| 2763 | __ CompareMap(rax, isolate()->factory()->heap_number_map()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2764 | __ j(not_equal, &maybe_undefined1, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2765 | __ Movsd(xmm1, FieldOperand(rax, HeapNumber::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2766 | __ jmp(&left, Label::kNear); |
| 2767 | __ bind(&right_smi); |
| 2768 | __ SmiToInteger32(rcx, rax); // Can't clobber rax yet. |
| 2769 | __ Cvtlsi2sd(xmm1, rcx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2770 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2771 | __ bind(&left); |
| 2772 | __ JumpIfSmi(rdx, &left_smi, Label::kNear); |
| 2773 | __ CompareMap(rdx, isolate()->factory()->heap_number_map()); |
| 2774 | __ j(not_equal, &maybe_undefined2, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2775 | __ Movsd(xmm0, FieldOperand(rdx, HeapNumber::kValueOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2776 | __ jmp(&done); |
| 2777 | __ bind(&left_smi); |
| 2778 | __ SmiToInteger32(rcx, rdx); // Can't clobber rdx yet. |
| 2779 | __ Cvtlsi2sd(xmm0, rcx); |
| 2780 | |
| 2781 | __ bind(&done); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2782 | // Compare operands |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2783 | __ Ucomisd(xmm0, xmm1); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2784 | |
| 2785 | // Don't base result on EFLAGS when a NaN is involved. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2786 | __ j(parity_even, &unordered, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2787 | |
| 2788 | // Return a result of -1, 0, or 1, based on EFLAGS. |
| 2789 | // Performing mov, because xor would destroy the flag register. |
| 2790 | __ movl(rax, Immediate(0)); |
| 2791 | __ movl(rcx, Immediate(0)); |
| 2792 | __ 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] | 2793 | __ sbbp(rax, rcx); // Subtract one if below (aka. carry set). |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2794 | __ ret(0); |
| 2795 | |
| 2796 | __ bind(&unordered); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2797 | __ bind(&generic_stub); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2798 | CompareICStub stub(isolate(), op(), CompareICState::GENERIC, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2799 | CompareICState::GENERIC, CompareICState::GENERIC); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2800 | __ jmp(stub.GetCode(), RelocInfo::CODE_TARGET); |
| 2801 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2802 | __ bind(&maybe_undefined1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2803 | if (Token::IsOrderedRelationalCompareOp(op())) { |
| 2804 | __ Cmp(rax, isolate()->factory()->undefined_value()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2805 | __ j(not_equal, &miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2806 | __ JumpIfSmi(rdx, &unordered); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2807 | __ CmpObjectType(rdx, HEAP_NUMBER_TYPE, rcx); |
| 2808 | __ j(not_equal, &maybe_undefined2, Label::kNear); |
| 2809 | __ jmp(&unordered); |
| 2810 | } |
| 2811 | |
| 2812 | __ bind(&maybe_undefined2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2813 | if (Token::IsOrderedRelationalCompareOp(op())) { |
| 2814 | __ Cmp(rdx, isolate()->factory()->undefined_value()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2815 | __ j(equal, &unordered); |
| 2816 | } |
| 2817 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2818 | __ bind(&miss); |
| 2819 | GenerateMiss(masm); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2820 | } |
| 2821 | |
| 2822 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2823 | void CompareICStub::GenerateInternalizedStrings(MacroAssembler* masm) { |
| 2824 | DCHECK(state() == CompareICState::INTERNALIZED_STRING); |
| 2825 | DCHECK(GetCondition() == equal); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2826 | |
| 2827 | // Registers containing left and right operands respectively. |
| 2828 | Register left = rdx; |
| 2829 | Register right = rax; |
| 2830 | Register tmp1 = rcx; |
| 2831 | Register tmp2 = rbx; |
| 2832 | |
| 2833 | // Check that both operands are heap objects. |
| 2834 | Label miss; |
| 2835 | Condition cond = masm->CheckEitherSmi(left, right, tmp1); |
| 2836 | __ j(cond, &miss, Label::kNear); |
| 2837 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2838 | // Check that both operands are internalized strings. |
| 2839 | __ movp(tmp1, FieldOperand(left, HeapObject::kMapOffset)); |
| 2840 | __ movp(tmp2, FieldOperand(right, HeapObject::kMapOffset)); |
| 2841 | __ movzxbp(tmp1, FieldOperand(tmp1, Map::kInstanceTypeOffset)); |
| 2842 | __ movzxbp(tmp2, FieldOperand(tmp2, Map::kInstanceTypeOffset)); |
| 2843 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 2844 | __ orp(tmp1, tmp2); |
| 2845 | __ testb(tmp1, Immediate(kIsNotStringMask | kIsNotInternalizedMask)); |
| 2846 | __ j(not_zero, &miss, Label::kNear); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2847 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2848 | // Internalized strings are compared by identity. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2849 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2850 | __ cmpp(left, right); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2851 | // Make sure rax is non-zero. At this point input operands are |
| 2852 | // guaranteed to be non-zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2853 | DCHECK(right.is(rax)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2854 | __ j(not_equal, &done, Label::kNear); |
| 2855 | STATIC_ASSERT(EQUAL == 0); |
| 2856 | STATIC_ASSERT(kSmiTag == 0); |
| 2857 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 2858 | __ bind(&done); |
| 2859 | __ ret(0); |
| 2860 | |
| 2861 | __ bind(&miss); |
| 2862 | GenerateMiss(masm); |
| 2863 | } |
| 2864 | |
| 2865 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2866 | void CompareICStub::GenerateUniqueNames(MacroAssembler* masm) { |
| 2867 | DCHECK(state() == CompareICState::UNIQUE_NAME); |
| 2868 | DCHECK(GetCondition() == equal); |
| 2869 | |
| 2870 | // Registers containing left and right operands respectively. |
| 2871 | Register left = rdx; |
| 2872 | Register right = rax; |
| 2873 | Register tmp1 = rcx; |
| 2874 | Register tmp2 = rbx; |
| 2875 | |
| 2876 | // Check that both operands are heap objects. |
| 2877 | Label miss; |
| 2878 | Condition cond = masm->CheckEitherSmi(left, right, tmp1); |
| 2879 | __ j(cond, &miss, Label::kNear); |
| 2880 | |
| 2881 | // Check that both operands are unique names. This leaves the instance |
| 2882 | // types loaded in tmp1 and tmp2. |
| 2883 | __ movp(tmp1, FieldOperand(left, HeapObject::kMapOffset)); |
| 2884 | __ movp(tmp2, FieldOperand(right, HeapObject::kMapOffset)); |
| 2885 | __ movzxbp(tmp1, FieldOperand(tmp1, Map::kInstanceTypeOffset)); |
| 2886 | __ movzxbp(tmp2, FieldOperand(tmp2, Map::kInstanceTypeOffset)); |
| 2887 | |
| 2888 | __ JumpIfNotUniqueNameInstanceType(tmp1, &miss, Label::kNear); |
| 2889 | __ JumpIfNotUniqueNameInstanceType(tmp2, &miss, Label::kNear); |
| 2890 | |
| 2891 | // Unique names are compared by identity. |
| 2892 | Label done; |
| 2893 | __ cmpp(left, right); |
| 2894 | // Make sure rax is non-zero. At this point input operands are |
| 2895 | // guaranteed to be non-zero. |
| 2896 | DCHECK(right.is(rax)); |
| 2897 | __ j(not_equal, &done, Label::kNear); |
| 2898 | STATIC_ASSERT(EQUAL == 0); |
| 2899 | STATIC_ASSERT(kSmiTag == 0); |
| 2900 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 2901 | __ bind(&done); |
| 2902 | __ ret(0); |
| 2903 | |
| 2904 | __ bind(&miss); |
| 2905 | GenerateMiss(masm); |
| 2906 | } |
| 2907 | |
| 2908 | |
| 2909 | void CompareICStub::GenerateStrings(MacroAssembler* masm) { |
| 2910 | DCHECK(state() == CompareICState::STRING); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2911 | Label miss; |
| 2912 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2913 | bool equality = Token::IsEqualityOp(op()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2914 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2915 | // Registers containing left and right operands respectively. |
| 2916 | Register left = rdx; |
| 2917 | Register right = rax; |
| 2918 | Register tmp1 = rcx; |
| 2919 | Register tmp2 = rbx; |
| 2920 | Register tmp3 = rdi; |
| 2921 | |
| 2922 | // Check that both operands are heap objects. |
| 2923 | Condition cond = masm->CheckEitherSmi(left, right, tmp1); |
| 2924 | __ j(cond, &miss); |
| 2925 | |
| 2926 | // Check that both operands are strings. This leaves the instance |
| 2927 | // types loaded in tmp1 and tmp2. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2928 | __ movp(tmp1, FieldOperand(left, HeapObject::kMapOffset)); |
| 2929 | __ movp(tmp2, FieldOperand(right, HeapObject::kMapOffset)); |
| 2930 | __ movzxbp(tmp1, FieldOperand(tmp1, Map::kInstanceTypeOffset)); |
| 2931 | __ movzxbp(tmp2, FieldOperand(tmp2, Map::kInstanceTypeOffset)); |
| 2932 | __ movp(tmp3, tmp1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2933 | STATIC_ASSERT(kNotStringTag != 0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2934 | __ orp(tmp3, tmp2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2935 | __ testb(tmp3, Immediate(kIsNotStringMask)); |
| 2936 | __ j(not_zero, &miss); |
| 2937 | |
| 2938 | // Fast check for identical strings. |
| 2939 | Label not_same; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2940 | __ cmpp(left, right); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2941 | __ j(not_equal, ¬_same, Label::kNear); |
| 2942 | STATIC_ASSERT(EQUAL == 0); |
| 2943 | STATIC_ASSERT(kSmiTag == 0); |
| 2944 | __ Move(rax, Smi::FromInt(EQUAL)); |
| 2945 | __ ret(0); |
| 2946 | |
| 2947 | // Handle not identical strings. |
| 2948 | __ bind(¬_same); |
| 2949 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2950 | // Check that both strings are internalized strings. If they are, we're done |
| 2951 | // because we already know they are not identical. We also know they are both |
| 2952 | // strings. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2953 | if (equality) { |
| 2954 | Label do_compare; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2955 | STATIC_ASSERT(kInternalizedTag == 0); |
| 2956 | __ orp(tmp1, tmp2); |
| 2957 | __ testb(tmp1, Immediate(kIsNotInternalizedMask)); |
| 2958 | __ j(not_zero, &do_compare, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2959 | // Make sure rax is non-zero. At this point input operands are |
| 2960 | // guaranteed to be non-zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2961 | DCHECK(right.is(rax)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2962 | __ ret(0); |
| 2963 | __ bind(&do_compare); |
| 2964 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2965 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2966 | // Check that both strings are sequential one-byte. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2967 | Label runtime; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2968 | __ JumpIfNotBothSequentialOneByteStrings(left, right, tmp1, tmp2, &runtime); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2969 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2970 | // Compare flat one-byte strings. Returns when done. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2971 | if (equality) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2972 | StringHelper::GenerateFlatOneByteStringEquals(masm, left, right, tmp1, |
| 2973 | tmp2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2974 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2975 | StringHelper::GenerateCompareFlatOneByteStrings( |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2976 | masm, left, right, tmp1, tmp2, tmp3, kScratchRegister); |
| 2977 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2978 | |
| 2979 | // Handle more complex cases in runtime. |
| 2980 | __ bind(&runtime); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2981 | if (equality) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2982 | { |
| 2983 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 2984 | __ Push(left); |
| 2985 | __ Push(right); |
| 2986 | __ CallRuntime(Runtime::kStringEqual); |
| 2987 | } |
| 2988 | __ LoadRoot(rdx, Heap::kTrueValueRootIndex); |
| 2989 | __ subp(rax, rdx); |
| 2990 | __ Ret(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2991 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2992 | __ PopReturnAddressTo(tmp1); |
| 2993 | __ Push(left); |
| 2994 | __ Push(right); |
| 2995 | __ PushReturnAddressFrom(tmp1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2996 | __ TailCallRuntime(Runtime::kStringCompare); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2997 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2998 | |
| 2999 | __ bind(&miss); |
| 3000 | GenerateMiss(masm); |
| 3001 | } |
| 3002 | |
| 3003 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3004 | void CompareICStub::GenerateReceivers(MacroAssembler* masm) { |
| 3005 | DCHECK_EQ(CompareICState::RECEIVER, state()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3006 | Label miss; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3007 | Condition either_smi = masm->CheckEitherSmi(rdx, rax); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3008 | __ j(either_smi, &miss, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3009 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3010 | STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE); |
| 3011 | __ CmpObjectType(rax, FIRST_JS_RECEIVER_TYPE, rcx); |
| 3012 | __ j(below, &miss, Label::kNear); |
| 3013 | __ CmpObjectType(rdx, FIRST_JS_RECEIVER_TYPE, rcx); |
| 3014 | __ j(below, &miss, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3015 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3016 | DCHECK_EQ(equal, GetCondition()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3017 | __ subp(rax, rdx); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3018 | __ ret(0); |
| 3019 | |
| 3020 | __ bind(&miss); |
| 3021 | GenerateMiss(masm); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3022 | } |
| 3023 | |
| 3024 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3025 | void CompareICStub::GenerateKnownReceivers(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3026 | Label miss; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3027 | Handle<WeakCell> cell = Map::WeakCellForMap(known_map_); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3028 | Condition either_smi = masm->CheckEitherSmi(rdx, rax); |
| 3029 | __ j(either_smi, &miss, Label::kNear); |
| 3030 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3031 | __ GetWeakValue(rdi, cell); |
| 3032 | __ cmpp(FieldOperand(rdx, HeapObject::kMapOffset), rdi); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3033 | __ j(not_equal, &miss, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3034 | __ cmpp(FieldOperand(rax, HeapObject::kMapOffset), rdi); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3035 | __ j(not_equal, &miss, Label::kNear); |
| 3036 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3037 | if (Token::IsEqualityOp(op())) { |
| 3038 | __ subp(rax, rdx); |
| 3039 | __ ret(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3040 | } else { |
| 3041 | __ PopReturnAddressTo(rcx); |
| 3042 | __ Push(rdx); |
| 3043 | __ Push(rax); |
| 3044 | __ Push(Smi::FromInt(NegativeComparisonResult(GetCondition()))); |
| 3045 | __ PushReturnAddressFrom(rcx); |
| 3046 | __ TailCallRuntime(Runtime::kCompare); |
| 3047 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3048 | |
| 3049 | __ bind(&miss); |
| 3050 | GenerateMiss(masm); |
| 3051 | } |
| 3052 | |
| 3053 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3054 | void CompareICStub::GenerateMiss(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3055 | { |
| 3056 | // Call the runtime system in a fresh internal frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3057 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3058 | __ Push(rdx); |
| 3059 | __ Push(rax); |
| 3060 | __ Push(rdx); |
| 3061 | __ Push(rax); |
| 3062 | __ Push(Smi::FromInt(op())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3063 | __ CallRuntime(Runtime::kCompareIC_Miss); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 3064 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3065 | // Compute the entry point of the rewritten stub. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3066 | __ leap(rdi, FieldOperand(rax, Code::kHeaderSize)); |
| 3067 | __ Pop(rax); |
| 3068 | __ Pop(rdx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3069 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3070 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3071 | // Do a tail call to the rewritten stub. |
| 3072 | __ jmp(rdi); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3073 | } |
| 3074 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3075 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3076 | void NameDictionaryLookupStub::GenerateNegativeLookup(MacroAssembler* masm, |
| 3077 | Label* miss, |
| 3078 | Label* done, |
| 3079 | Register properties, |
| 3080 | Handle<Name> name, |
| 3081 | Register r0) { |
| 3082 | DCHECK(name->IsUniqueName()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3083 | // If names of slots in range from 1 to kProbes - 1 for the hash value are |
| 3084 | // not equal to the name and kProbes-th slot is not used (its name is the |
| 3085 | // undefined value), it guarantees the hash table doesn't contain the |
| 3086 | // property. It's true even if some slots represent deleted properties |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3087 | // (their names are the hole value). |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3088 | for (int i = 0; i < kInlinedProbes; i++) { |
| 3089 | // r0 points to properties hash. |
| 3090 | // Compute the masked index: (hash + i + i * i) & mask. |
| 3091 | Register index = r0; |
| 3092 | // Capacity is smi 2^n. |
| 3093 | __ SmiToInteger32(index, FieldOperand(properties, kCapacityOffset)); |
| 3094 | __ decl(index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3095 | __ andp(index, |
| 3096 | Immediate(name->Hash() + NameDictionary::GetProbeOffset(i))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3097 | |
| 3098 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3099 | STATIC_ASSERT(NameDictionary::kEntrySize == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3100 | __ leap(index, Operand(index, index, times_2, 0)); // index *= 3. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3101 | |
| 3102 | Register entity_name = r0; |
| 3103 | // Having undefined at this place means the name is not contained. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3104 | STATIC_ASSERT(kSmiTagSize == 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3105 | __ movp(entity_name, Operand(properties, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3106 | index, |
| 3107 | times_pointer_size, |
| 3108 | kElementsStartOffset - kHeapObjectTag)); |
| 3109 | __ Cmp(entity_name, masm->isolate()->factory()->undefined_value()); |
| 3110 | __ j(equal, done); |
| 3111 | |
| 3112 | // Stop if found the property. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3113 | __ Cmp(entity_name, Handle<Name>(name)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3114 | __ j(equal, miss); |
| 3115 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3116 | Label good; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3117 | // Check for the hole and skip. |
| 3118 | __ CompareRoot(entity_name, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3119 | __ j(equal, &good, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3120 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3121 | // Check if the entry name is not a unique name. |
| 3122 | __ movp(entity_name, FieldOperand(entity_name, HeapObject::kMapOffset)); |
| 3123 | __ JumpIfNotUniqueNameInstanceType( |
| 3124 | FieldOperand(entity_name, Map::kInstanceTypeOffset), miss); |
| 3125 | __ bind(&good); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3126 | } |
| 3127 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3128 | NameDictionaryLookupStub stub(masm->isolate(), properties, r0, r0, |
| 3129 | NEGATIVE_LOOKUP); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3130 | __ Push(Handle<Object>(name)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3131 | __ Push(Immediate(name->Hash())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3132 | __ CallStub(&stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3133 | __ testp(r0, r0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3134 | __ j(not_zero, miss); |
| 3135 | __ jmp(done); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3136 | } |
| 3137 | |
| 3138 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3139 | // Probe the name dictionary in the |elements| register. Jump to the |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3140 | // |done| label if a property with the given name is found leaving the |
| 3141 | // index into the dictionary in |r1|. Jump to the |miss| label |
| 3142 | // otherwise. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3143 | void NameDictionaryLookupStub::GeneratePositiveLookup(MacroAssembler* masm, |
| 3144 | Label* miss, |
| 3145 | Label* done, |
| 3146 | Register elements, |
| 3147 | Register name, |
| 3148 | Register r0, |
| 3149 | Register r1) { |
| 3150 | DCHECK(!elements.is(r0)); |
| 3151 | DCHECK(!elements.is(r1)); |
| 3152 | DCHECK(!name.is(r0)); |
| 3153 | DCHECK(!name.is(r1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3154 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3155 | __ AssertName(name); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3156 | |
| 3157 | __ SmiToInteger32(r0, FieldOperand(elements, kCapacityOffset)); |
| 3158 | __ decl(r0); |
| 3159 | |
| 3160 | for (int i = 0; i < kInlinedProbes; i++) { |
| 3161 | // Compute the masked index: (hash + i + i * i) & mask. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3162 | __ movl(r1, FieldOperand(name, Name::kHashFieldOffset)); |
| 3163 | __ shrl(r1, Immediate(Name::kHashShift)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3164 | if (i > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3165 | __ addl(r1, Immediate(NameDictionary::GetProbeOffset(i))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3166 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3167 | __ andp(r1, r0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3168 | |
| 3169 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3170 | STATIC_ASSERT(NameDictionary::kEntrySize == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3171 | __ leap(r1, Operand(r1, r1, times_2, 0)); // r1 = r1 * 3 |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3172 | |
| 3173 | // Check if the key is identical to the name. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3174 | __ cmpp(name, Operand(elements, r1, times_pointer_size, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3175 | kElementsStartOffset - kHeapObjectTag)); |
| 3176 | __ j(equal, done); |
| 3177 | } |
| 3178 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3179 | NameDictionaryLookupStub stub(masm->isolate(), elements, r0, r1, |
| 3180 | POSITIVE_LOOKUP); |
| 3181 | __ Push(name); |
| 3182 | __ movl(r0, FieldOperand(name, Name::kHashFieldOffset)); |
| 3183 | __ shrl(r0, Immediate(Name::kHashShift)); |
| 3184 | __ Push(r0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3185 | __ CallStub(&stub); |
| 3186 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3187 | __ testp(r0, r0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3188 | __ j(zero, miss); |
| 3189 | __ jmp(done); |
| 3190 | } |
| 3191 | |
| 3192 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3193 | void NameDictionaryLookupStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3194 | // This stub overrides SometimesSetsUpAFrame() to return false. That means |
| 3195 | // we cannot call anything that could cause a GC from this stub. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3196 | // Stack frame on entry: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3197 | // rsp[0 * kPointerSize] : return address. |
| 3198 | // rsp[1 * kPointerSize] : key's hash. |
| 3199 | // rsp[2 * kPointerSize] : key. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3200 | // Registers: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3201 | // dictionary_: NameDictionary to probe. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3202 | // result_: used as scratch. |
| 3203 | // index_: will hold an index of entry if lookup is successful. |
| 3204 | // might alias with result_. |
| 3205 | // Returns: |
| 3206 | // result_ is zero if lookup failed, non zero otherwise. |
| 3207 | |
| 3208 | Label in_dictionary, maybe_in_dictionary, not_in_dictionary; |
| 3209 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3210 | Register scratch = result(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3211 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3212 | __ SmiToInteger32(scratch, FieldOperand(dictionary(), kCapacityOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3213 | __ decl(scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3214 | __ Push(scratch); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3215 | |
| 3216 | // If names of slots in range from 1 to kProbes - 1 for the hash value are |
| 3217 | // not equal to the name and kProbes-th slot is not used (its name is the |
| 3218 | // undefined value), it guarantees the hash table doesn't contain the |
| 3219 | // property. It's true even if some slots represent deleted properties |
| 3220 | // (their names are the null value). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3221 | StackArgumentsAccessor args(rsp, 2, ARGUMENTS_DONT_CONTAIN_RECEIVER, |
| 3222 | kPointerSize); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3223 | for (int i = kInlinedProbes; i < kTotalProbes; i++) { |
| 3224 | // Compute the masked index: (hash + i + i * i) & mask. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3225 | __ movp(scratch, args.GetArgumentOperand(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3226 | if (i > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3227 | __ addl(scratch, Immediate(NameDictionary::GetProbeOffset(i))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3228 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3229 | __ andp(scratch, Operand(rsp, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3230 | |
| 3231 | // Scale the index by multiplying by the entry size. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3232 | STATIC_ASSERT(NameDictionary::kEntrySize == 3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3233 | __ leap(index(), Operand(scratch, scratch, times_2, 0)); // index *= 3. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3234 | |
| 3235 | // Having undefined at this place means the name is not contained. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3236 | __ movp(scratch, Operand(dictionary(), index(), times_pointer_size, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3237 | kElementsStartOffset - kHeapObjectTag)); |
| 3238 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3239 | __ Cmp(scratch, isolate()->factory()->undefined_value()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3240 | __ j(equal, ¬_in_dictionary); |
| 3241 | |
| 3242 | // Stop if found the property. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3243 | __ cmpp(scratch, args.GetArgumentOperand(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3244 | __ j(equal, &in_dictionary); |
| 3245 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3246 | if (i != kTotalProbes - 1 && mode() == NEGATIVE_LOOKUP) { |
| 3247 | // If we hit a key that is not a unique name during negative |
| 3248 | // 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] | 3249 | // key we are looking for. |
| 3250 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3251 | // Check if the entry name is not a unique name. |
| 3252 | __ movp(scratch, FieldOperand(scratch, HeapObject::kMapOffset)); |
| 3253 | __ JumpIfNotUniqueNameInstanceType( |
| 3254 | FieldOperand(scratch, Map::kInstanceTypeOffset), |
| 3255 | &maybe_in_dictionary); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3256 | } |
| 3257 | } |
| 3258 | |
| 3259 | __ bind(&maybe_in_dictionary); |
| 3260 | // If we are doing negative lookup then probing failure should be |
| 3261 | // treated as a lookup success. For positive lookup probing failure |
| 3262 | // should be treated as lookup failure. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3263 | if (mode() == POSITIVE_LOOKUP) { |
| 3264 | __ movp(scratch, Immediate(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3265 | __ Drop(1); |
| 3266 | __ ret(2 * kPointerSize); |
| 3267 | } |
| 3268 | |
| 3269 | __ bind(&in_dictionary); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3270 | __ movp(scratch, Immediate(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3271 | __ Drop(1); |
| 3272 | __ ret(2 * kPointerSize); |
| 3273 | |
| 3274 | __ bind(¬_in_dictionary); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3275 | __ movp(scratch, Immediate(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3276 | __ Drop(1); |
| 3277 | __ ret(2 * kPointerSize); |
| 3278 | } |
| 3279 | |
| 3280 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3281 | void StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime( |
| 3282 | Isolate* isolate) { |
| 3283 | StoreBufferOverflowStub stub1(isolate, kDontSaveFPRegs); |
| 3284 | stub1.GetCode(); |
| 3285 | StoreBufferOverflowStub stub2(isolate, kSaveFPRegs); |
| 3286 | stub2.GetCode(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3287 | } |
| 3288 | |
| 3289 | |
| 3290 | // Takes the input in 3 registers: address_ value_ and object_. A pointer to |
| 3291 | // the value has just been written into the object, now this stub makes sure |
| 3292 | // we keep the GC informed. The word in the object where the value has been |
| 3293 | // written is in the address register. |
| 3294 | void RecordWriteStub::Generate(MacroAssembler* masm) { |
| 3295 | Label skip_to_incremental_noncompacting; |
| 3296 | Label skip_to_incremental_compacting; |
| 3297 | |
| 3298 | // The first two instructions are generated with labels so as to get the |
| 3299 | // offset fixed up correctly by the bind(Label*) call. We patch it back and |
| 3300 | // forth between a compare instructions (a nop in this position) and the |
| 3301 | // real branch when we start and stop incremental heap marking. |
| 3302 | // See RecordWriteStub::Patch for details. |
| 3303 | __ jmp(&skip_to_incremental_noncompacting, Label::kNear); |
| 3304 | __ jmp(&skip_to_incremental_compacting, Label::kFar); |
| 3305 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3306 | if (remembered_set_action() == EMIT_REMEMBERED_SET) { |
| 3307 | __ RememberedSetHelper(object(), address(), value(), save_fp_regs_mode(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3308 | MacroAssembler::kReturnAtEnd); |
| 3309 | } else { |
| 3310 | __ ret(0); |
| 3311 | } |
| 3312 | |
| 3313 | __ bind(&skip_to_incremental_noncompacting); |
| 3314 | GenerateIncremental(masm, INCREMENTAL); |
| 3315 | |
| 3316 | __ bind(&skip_to_incremental_compacting); |
| 3317 | GenerateIncremental(masm, INCREMENTAL_COMPACTION); |
| 3318 | |
| 3319 | // Initial mode of the stub is expected to be STORE_BUFFER_ONLY. |
| 3320 | // Will be checked in IncrementalMarking::ActivateGeneratedStub. |
| 3321 | masm->set_byte_at(0, kTwoByteNopInstruction); |
| 3322 | masm->set_byte_at(2, kFiveByteNopInstruction); |
| 3323 | } |
| 3324 | |
| 3325 | |
| 3326 | void RecordWriteStub::GenerateIncremental(MacroAssembler* masm, Mode mode) { |
| 3327 | regs_.Save(masm); |
| 3328 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3329 | if (remembered_set_action() == EMIT_REMEMBERED_SET) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3330 | Label dont_need_remembered_set; |
| 3331 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3332 | __ movp(regs_.scratch0(), Operand(regs_.address(), 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3333 | __ JumpIfNotInNewSpace(regs_.scratch0(), |
| 3334 | regs_.scratch0(), |
| 3335 | &dont_need_remembered_set); |
| 3336 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3337 | __ JumpIfInNewSpace(regs_.object(), regs_.scratch0(), |
| 3338 | &dont_need_remembered_set); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3339 | |
| 3340 | // First notify the incremental marker if necessary, then update the |
| 3341 | // remembered set. |
| 3342 | CheckNeedsToInformIncrementalMarker( |
| 3343 | masm, kUpdateRememberedSetOnNoNeedToInformIncrementalMarker, mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3344 | InformIncrementalMarker(masm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3345 | regs_.Restore(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3346 | __ RememberedSetHelper(object(), address(), value(), save_fp_regs_mode(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3347 | MacroAssembler::kReturnAtEnd); |
| 3348 | |
| 3349 | __ bind(&dont_need_remembered_set); |
| 3350 | } |
| 3351 | |
| 3352 | CheckNeedsToInformIncrementalMarker( |
| 3353 | masm, kReturnOnNoNeedToInformIncrementalMarker, mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3354 | InformIncrementalMarker(masm); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3355 | regs_.Restore(masm); |
| 3356 | __ ret(0); |
| 3357 | } |
| 3358 | |
| 3359 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3360 | void RecordWriteStub::InformIncrementalMarker(MacroAssembler* masm) { |
| 3361 | regs_.SaveCallerSaveRegisters(masm, save_fp_regs_mode()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3362 | Register address = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3363 | arg_reg_1.is(regs_.address()) ? kScratchRegister : regs_.address(); |
| 3364 | DCHECK(!address.is(regs_.object())); |
| 3365 | DCHECK(!address.is(arg_reg_1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3366 | __ Move(address, regs_.address()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3367 | __ Move(arg_reg_1, regs_.object()); |
| 3368 | // TODO(gc) Can we just set address arg2 in the beginning? |
| 3369 | __ Move(arg_reg_2, address); |
| 3370 | __ LoadAddress(arg_reg_3, |
| 3371 | ExternalReference::isolate_address(isolate())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3372 | int argument_count = 3; |
| 3373 | |
| 3374 | AllowExternalCallThatCantCauseGC scope(masm); |
| 3375 | __ PrepareCallCFunction(argument_count); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3376 | __ CallCFunction( |
| 3377 | ExternalReference::incremental_marking_record_write_function(isolate()), |
| 3378 | argument_count); |
| 3379 | regs_.RestoreCallerSaveRegisters(masm, save_fp_regs_mode()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3380 | } |
| 3381 | |
| 3382 | |
| 3383 | void RecordWriteStub::CheckNeedsToInformIncrementalMarker( |
| 3384 | MacroAssembler* masm, |
| 3385 | OnNoNeedToInformIncrementalMarker on_no_need, |
| 3386 | Mode mode) { |
| 3387 | Label on_black; |
| 3388 | Label need_incremental; |
| 3389 | Label need_incremental_pop_object; |
| 3390 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3391 | __ movp(regs_.scratch0(), Immediate(~Page::kPageAlignmentMask)); |
| 3392 | __ andp(regs_.scratch0(), regs_.object()); |
| 3393 | __ movp(regs_.scratch1(), |
| 3394 | Operand(regs_.scratch0(), |
| 3395 | MemoryChunk::kWriteBarrierCounterOffset)); |
| 3396 | __ subp(regs_.scratch1(), Immediate(1)); |
| 3397 | __ movp(Operand(regs_.scratch0(), |
| 3398 | MemoryChunk::kWriteBarrierCounterOffset), |
| 3399 | regs_.scratch1()); |
| 3400 | __ j(negative, &need_incremental); |
| 3401 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3402 | // Let's look at the color of the object: If it is not black we don't have |
| 3403 | // to inform the incremental marker. |
| 3404 | __ JumpIfBlack(regs_.object(), |
| 3405 | regs_.scratch0(), |
| 3406 | regs_.scratch1(), |
| 3407 | &on_black, |
| 3408 | Label::kNear); |
| 3409 | |
| 3410 | regs_.Restore(masm); |
| 3411 | if (on_no_need == kUpdateRememberedSetOnNoNeedToInformIncrementalMarker) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3412 | __ RememberedSetHelper(object(), address(), value(), save_fp_regs_mode(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3413 | MacroAssembler::kReturnAtEnd); |
| 3414 | } else { |
| 3415 | __ ret(0); |
| 3416 | } |
| 3417 | |
| 3418 | __ bind(&on_black); |
| 3419 | |
| 3420 | // Get the value from the slot. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3421 | __ movp(regs_.scratch0(), Operand(regs_.address(), 0)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3422 | |
| 3423 | if (mode == INCREMENTAL_COMPACTION) { |
| 3424 | Label ensure_not_white; |
| 3425 | |
| 3426 | __ CheckPageFlag(regs_.scratch0(), // Contains value. |
| 3427 | regs_.scratch1(), // Scratch. |
| 3428 | MemoryChunk::kEvacuationCandidateMask, |
| 3429 | zero, |
| 3430 | &ensure_not_white, |
| 3431 | Label::kNear); |
| 3432 | |
| 3433 | __ CheckPageFlag(regs_.object(), |
| 3434 | regs_.scratch1(), // Scratch. |
| 3435 | MemoryChunk::kSkipEvacuationSlotsRecordingMask, |
| 3436 | zero, |
| 3437 | &need_incremental); |
| 3438 | |
| 3439 | __ bind(&ensure_not_white); |
| 3440 | } |
| 3441 | |
| 3442 | // We need an extra register for this, so we push the object register |
| 3443 | // temporarily. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3444 | __ Push(regs_.object()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3445 | __ JumpIfWhite(regs_.scratch0(), // The value. |
| 3446 | regs_.scratch1(), // Scratch. |
| 3447 | regs_.object(), // Scratch. |
| 3448 | &need_incremental_pop_object, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3449 | __ Pop(regs_.object()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3450 | |
| 3451 | regs_.Restore(masm); |
| 3452 | if (on_no_need == kUpdateRememberedSetOnNoNeedToInformIncrementalMarker) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3453 | __ RememberedSetHelper(object(), address(), value(), save_fp_regs_mode(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3454 | MacroAssembler::kReturnAtEnd); |
| 3455 | } else { |
| 3456 | __ ret(0); |
| 3457 | } |
| 3458 | |
| 3459 | __ bind(&need_incremental_pop_object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3460 | __ Pop(regs_.object()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3461 | |
| 3462 | __ bind(&need_incremental); |
| 3463 | |
| 3464 | // Fall through when we need to inform the incremental marker. |
| 3465 | } |
| 3466 | |
| 3467 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3468 | void StubFailureTrampolineStub::Generate(MacroAssembler* masm) { |
| 3469 | CEntryStub ces(isolate(), 1, kSaveFPRegs); |
| 3470 | __ Call(ces.GetCode(), RelocInfo::CODE_TARGET); |
| 3471 | int parameter_count_offset = |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3472 | StubFailureTrampolineFrameConstants::kArgumentsLengthOffset; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3473 | __ movp(rbx, MemOperand(rbp, parameter_count_offset)); |
| 3474 | masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE); |
| 3475 | __ PopReturnAddressTo(rcx); |
| 3476 | int additional_offset = |
| 3477 | function_mode() == JS_FUNCTION_STUB_MODE ? kPointerSize : 0; |
| 3478 | __ leap(rsp, MemOperand(rsp, rbx, times_pointer_size, additional_offset)); |
| 3479 | __ jmp(rcx); // Return to IC Miss stub, continuation still on stack. |
| 3480 | } |
| 3481 | |
| 3482 | |
| 3483 | void LoadICTrampolineStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3484 | __ EmitLoadTypeFeedbackVector(LoadWithVectorDescriptor::VectorRegister()); |
| 3485 | LoadICStub stub(isolate(), state()); |
| 3486 | stub.GenerateForTrampoline(masm); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3487 | } |
| 3488 | |
| 3489 | |
| 3490 | void KeyedLoadICTrampolineStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3491 | __ EmitLoadTypeFeedbackVector(LoadWithVectorDescriptor::VectorRegister()); |
| 3492 | KeyedLoadICStub stub(isolate(), state()); |
| 3493 | stub.GenerateForTrampoline(masm); |
| 3494 | } |
| 3495 | |
| 3496 | |
| 3497 | static void HandleArrayCases(MacroAssembler* masm, Register feedback, |
| 3498 | Register receiver_map, Register scratch1, |
| 3499 | Register scratch2, Register scratch3, |
| 3500 | bool is_polymorphic, Label* miss) { |
| 3501 | // feedback initially contains the feedback array |
| 3502 | Label next_loop, prepare_next; |
| 3503 | Label start_polymorphic; |
| 3504 | |
| 3505 | Register counter = scratch1; |
| 3506 | Register length = scratch2; |
| 3507 | Register cached_map = scratch3; |
| 3508 | |
| 3509 | __ movp(cached_map, FieldOperand(feedback, FixedArray::OffsetOfElementAt(0))); |
| 3510 | __ cmpp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset)); |
| 3511 | __ j(not_equal, &start_polymorphic); |
| 3512 | |
| 3513 | // found, now call handler. |
| 3514 | Register handler = feedback; |
| 3515 | __ movp(handler, FieldOperand(feedback, FixedArray::OffsetOfElementAt(1))); |
| 3516 | __ leap(handler, FieldOperand(handler, Code::kHeaderSize)); |
| 3517 | __ jmp(handler); |
| 3518 | |
| 3519 | // Polymorphic, we have to loop from 2 to N |
| 3520 | __ bind(&start_polymorphic); |
| 3521 | __ SmiToInteger32(length, FieldOperand(feedback, FixedArray::kLengthOffset)); |
| 3522 | if (!is_polymorphic) { |
| 3523 | // If the IC could be monomorphic we have to make sure we don't go past the |
| 3524 | // end of the feedback array. |
| 3525 | __ cmpl(length, Immediate(2)); |
| 3526 | __ j(equal, miss); |
| 3527 | } |
| 3528 | __ movl(counter, Immediate(2)); |
| 3529 | |
| 3530 | __ bind(&next_loop); |
| 3531 | __ movp(cached_map, FieldOperand(feedback, counter, times_pointer_size, |
| 3532 | FixedArray::kHeaderSize)); |
| 3533 | __ cmpp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset)); |
| 3534 | __ j(not_equal, &prepare_next); |
| 3535 | __ movp(handler, FieldOperand(feedback, counter, times_pointer_size, |
| 3536 | FixedArray::kHeaderSize + kPointerSize)); |
| 3537 | __ leap(handler, FieldOperand(handler, Code::kHeaderSize)); |
| 3538 | __ jmp(handler); |
| 3539 | |
| 3540 | __ bind(&prepare_next); |
| 3541 | __ addl(counter, Immediate(2)); |
| 3542 | __ cmpl(counter, length); |
| 3543 | __ j(less, &next_loop); |
| 3544 | |
| 3545 | // We exhausted our array of map handler pairs. |
| 3546 | __ jmp(miss); |
| 3547 | } |
| 3548 | |
| 3549 | |
| 3550 | static void HandleMonomorphicCase(MacroAssembler* masm, Register receiver, |
| 3551 | Register receiver_map, Register feedback, |
| 3552 | Register vector, Register integer_slot, |
| 3553 | Label* compare_map, Label* load_smi_map, |
| 3554 | Label* try_array) { |
| 3555 | __ JumpIfSmi(receiver, load_smi_map); |
| 3556 | __ movp(receiver_map, FieldOperand(receiver, 0)); |
| 3557 | |
| 3558 | __ bind(compare_map); |
| 3559 | __ cmpp(receiver_map, FieldOperand(feedback, WeakCell::kValueOffset)); |
| 3560 | __ j(not_equal, try_array); |
| 3561 | Register handler = feedback; |
| 3562 | __ movp(handler, FieldOperand(vector, integer_slot, times_pointer_size, |
| 3563 | FixedArray::kHeaderSize + kPointerSize)); |
| 3564 | __ leap(handler, FieldOperand(handler, Code::kHeaderSize)); |
| 3565 | __ jmp(handler); |
| 3566 | } |
| 3567 | |
| 3568 | |
| 3569 | void LoadICStub::Generate(MacroAssembler* masm) { GenerateImpl(masm, false); } |
| 3570 | |
| 3571 | |
| 3572 | void LoadICStub::GenerateForTrampoline(MacroAssembler* masm) { |
| 3573 | GenerateImpl(masm, true); |
| 3574 | } |
| 3575 | |
| 3576 | |
| 3577 | void LoadICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) { |
| 3578 | Register receiver = LoadWithVectorDescriptor::ReceiverRegister(); // rdx |
| 3579 | Register name = LoadWithVectorDescriptor::NameRegister(); // rcx |
| 3580 | Register vector = LoadWithVectorDescriptor::VectorRegister(); // rbx |
| 3581 | Register slot = LoadWithVectorDescriptor::SlotRegister(); // rax |
| 3582 | Register feedback = rdi; |
| 3583 | Register integer_slot = r8; |
| 3584 | Register receiver_map = r9; |
| 3585 | |
| 3586 | __ SmiToInteger32(integer_slot, slot); |
| 3587 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 3588 | FixedArray::kHeaderSize)); |
| 3589 | |
| 3590 | // Try to quickly handle the monomorphic case without knowing for sure |
| 3591 | // if we have a weak cell in feedback. We do know it's safe to look |
| 3592 | // at WeakCell::kValueOffset. |
| 3593 | Label try_array, load_smi_map, compare_map; |
| 3594 | Label not_array, miss; |
| 3595 | HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, |
| 3596 | integer_slot, &compare_map, &load_smi_map, &try_array); |
| 3597 | |
| 3598 | // Is it a fixed array? |
| 3599 | __ bind(&try_array); |
| 3600 | __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex); |
| 3601 | __ j(not_equal, ¬_array); |
| 3602 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r11, r15, true, |
| 3603 | &miss); |
| 3604 | |
| 3605 | __ bind(¬_array); |
| 3606 | __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex); |
| 3607 | __ j(not_equal, &miss); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 3608 | Code::Flags code_flags = |
| 3609 | Code::RemoveHolderFromFlags(Code::ComputeHandlerFlags(Code::LOAD_IC)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3610 | masm->isolate()->stub_cache()->GenerateProbe( |
| 3611 | masm, Code::LOAD_IC, code_flags, receiver, name, feedback, no_reg); |
| 3612 | |
| 3613 | __ bind(&miss); |
| 3614 | LoadIC::GenerateMiss(masm); |
| 3615 | |
| 3616 | __ bind(&load_smi_map); |
| 3617 | __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); |
| 3618 | __ jmp(&compare_map); |
| 3619 | } |
| 3620 | |
| 3621 | |
| 3622 | void KeyedLoadICStub::Generate(MacroAssembler* masm) { |
| 3623 | GenerateImpl(masm, false); |
| 3624 | } |
| 3625 | |
| 3626 | |
| 3627 | void KeyedLoadICStub::GenerateForTrampoline(MacroAssembler* masm) { |
| 3628 | GenerateImpl(masm, true); |
| 3629 | } |
| 3630 | |
| 3631 | |
| 3632 | void KeyedLoadICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) { |
| 3633 | Register receiver = LoadWithVectorDescriptor::ReceiverRegister(); // rdx |
| 3634 | Register key = LoadWithVectorDescriptor::NameRegister(); // rcx |
| 3635 | Register vector = LoadWithVectorDescriptor::VectorRegister(); // rbx |
| 3636 | Register slot = LoadWithVectorDescriptor::SlotRegister(); // rax |
| 3637 | Register feedback = rdi; |
| 3638 | Register integer_slot = r8; |
| 3639 | Register receiver_map = r9; |
| 3640 | |
| 3641 | __ SmiToInteger32(integer_slot, slot); |
| 3642 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 3643 | FixedArray::kHeaderSize)); |
| 3644 | |
| 3645 | // Try to quickly handle the monomorphic case without knowing for sure |
| 3646 | // if we have a weak cell in feedback. We do know it's safe to look |
| 3647 | // at WeakCell::kValueOffset. |
| 3648 | Label try_array, load_smi_map, compare_map; |
| 3649 | Label not_array, miss; |
| 3650 | HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, |
| 3651 | integer_slot, &compare_map, &load_smi_map, &try_array); |
| 3652 | |
| 3653 | __ bind(&try_array); |
| 3654 | // Is it a fixed array? |
| 3655 | __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex); |
| 3656 | __ j(not_equal, ¬_array); |
| 3657 | |
| 3658 | // We have a polymorphic element handler. |
| 3659 | Label polymorphic, try_poly_name; |
| 3660 | __ bind(&polymorphic); |
| 3661 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r11, r15, true, |
| 3662 | &miss); |
| 3663 | |
| 3664 | __ bind(¬_array); |
| 3665 | // Is it generic? |
| 3666 | __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex); |
| 3667 | __ j(not_equal, &try_poly_name); |
| 3668 | Handle<Code> megamorphic_stub = |
| 3669 | KeyedLoadIC::ChooseMegamorphicStub(masm->isolate(), GetExtraICState()); |
| 3670 | __ jmp(megamorphic_stub, RelocInfo::CODE_TARGET); |
| 3671 | |
| 3672 | __ bind(&try_poly_name); |
| 3673 | // We might have a name in feedback, and a fixed array in the next slot. |
| 3674 | __ cmpp(key, feedback); |
| 3675 | __ j(not_equal, &miss); |
| 3676 | // If the name comparison succeeded, we know we have a fixed array with |
| 3677 | // at least one map/handler pair. |
| 3678 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 3679 | FixedArray::kHeaderSize + kPointerSize)); |
| 3680 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r11, r15, false, |
| 3681 | &miss); |
| 3682 | |
| 3683 | __ bind(&miss); |
| 3684 | KeyedLoadIC::GenerateMiss(masm); |
| 3685 | |
| 3686 | __ bind(&load_smi_map); |
| 3687 | __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); |
| 3688 | __ jmp(&compare_map); |
| 3689 | } |
| 3690 | |
| 3691 | |
| 3692 | void VectorStoreICTrampolineStub::Generate(MacroAssembler* masm) { |
| 3693 | __ EmitLoadTypeFeedbackVector(VectorStoreICDescriptor::VectorRegister()); |
| 3694 | VectorStoreICStub stub(isolate(), state()); |
| 3695 | stub.GenerateForTrampoline(masm); |
| 3696 | } |
| 3697 | |
| 3698 | |
| 3699 | void VectorKeyedStoreICTrampolineStub::Generate(MacroAssembler* masm) { |
| 3700 | __ EmitLoadTypeFeedbackVector(VectorStoreICDescriptor::VectorRegister()); |
| 3701 | VectorKeyedStoreICStub stub(isolate(), state()); |
| 3702 | stub.GenerateForTrampoline(masm); |
| 3703 | } |
| 3704 | |
| 3705 | |
| 3706 | void VectorStoreICStub::Generate(MacroAssembler* masm) { |
| 3707 | GenerateImpl(masm, false); |
| 3708 | } |
| 3709 | |
| 3710 | |
| 3711 | void VectorStoreICStub::GenerateForTrampoline(MacroAssembler* masm) { |
| 3712 | GenerateImpl(masm, true); |
| 3713 | } |
| 3714 | |
| 3715 | |
| 3716 | void VectorStoreICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) { |
| 3717 | Register receiver = VectorStoreICDescriptor::ReceiverRegister(); // rdx |
| 3718 | Register key = VectorStoreICDescriptor::NameRegister(); // rcx |
| 3719 | Register vector = VectorStoreICDescriptor::VectorRegister(); // rbx |
| 3720 | Register slot = VectorStoreICDescriptor::SlotRegister(); // rdi |
| 3721 | DCHECK(VectorStoreICDescriptor::ValueRegister().is(rax)); // rax |
| 3722 | Register feedback = r8; |
| 3723 | Register integer_slot = r9; |
| 3724 | Register receiver_map = r11; |
| 3725 | DCHECK(!AreAliased(feedback, integer_slot, vector, slot, receiver_map)); |
| 3726 | |
| 3727 | __ SmiToInteger32(integer_slot, slot); |
| 3728 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 3729 | FixedArray::kHeaderSize)); |
| 3730 | |
| 3731 | // Try to quickly handle the monomorphic case without knowing for sure |
| 3732 | // if we have a weak cell in feedback. We do know it's safe to look |
| 3733 | // at WeakCell::kValueOffset. |
| 3734 | Label try_array, load_smi_map, compare_map; |
| 3735 | Label not_array, miss; |
| 3736 | HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, |
| 3737 | integer_slot, &compare_map, &load_smi_map, &try_array); |
| 3738 | |
| 3739 | // Is it a fixed array? |
| 3740 | __ bind(&try_array); |
| 3741 | __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex); |
| 3742 | __ j(not_equal, ¬_array); |
| 3743 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r14, r15, true, |
| 3744 | &miss); |
| 3745 | |
| 3746 | __ bind(¬_array); |
| 3747 | __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex); |
| 3748 | __ j(not_equal, &miss); |
| 3749 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 3750 | Code::Flags code_flags = |
| 3751 | Code::RemoveHolderFromFlags(Code::ComputeHandlerFlags(Code::STORE_IC)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3752 | masm->isolate()->stub_cache()->GenerateProbe(masm, Code::STORE_IC, code_flags, |
| 3753 | receiver, key, feedback, no_reg); |
| 3754 | |
| 3755 | __ bind(&miss); |
| 3756 | StoreIC::GenerateMiss(masm); |
| 3757 | |
| 3758 | __ bind(&load_smi_map); |
| 3759 | __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); |
| 3760 | __ jmp(&compare_map); |
| 3761 | } |
| 3762 | |
| 3763 | |
| 3764 | void VectorKeyedStoreICStub::Generate(MacroAssembler* masm) { |
| 3765 | GenerateImpl(masm, false); |
| 3766 | } |
| 3767 | |
| 3768 | |
| 3769 | void VectorKeyedStoreICStub::GenerateForTrampoline(MacroAssembler* masm) { |
| 3770 | GenerateImpl(masm, true); |
| 3771 | } |
| 3772 | |
| 3773 | |
| 3774 | static void HandlePolymorphicKeyedStoreCase(MacroAssembler* masm, |
| 3775 | Register receiver_map, |
| 3776 | Register feedback, Register scratch, |
| 3777 | Register scratch1, |
| 3778 | Register scratch2, Label* miss) { |
| 3779 | // feedback initially contains the feedback array |
| 3780 | Label next, next_loop, prepare_next; |
| 3781 | Label transition_call; |
| 3782 | |
| 3783 | Register cached_map = scratch; |
| 3784 | Register counter = scratch1; |
| 3785 | Register length = scratch2; |
| 3786 | |
| 3787 | // Polymorphic, we have to loop from 0 to N - 1 |
| 3788 | __ movp(counter, Immediate(0)); |
| 3789 | __ movp(length, FieldOperand(feedback, FixedArray::kLengthOffset)); |
| 3790 | __ SmiToInteger32(length, length); |
| 3791 | |
| 3792 | __ bind(&next_loop); |
| 3793 | __ movp(cached_map, FieldOperand(feedback, counter, times_pointer_size, |
| 3794 | FixedArray::kHeaderSize)); |
| 3795 | __ cmpp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset)); |
| 3796 | __ j(not_equal, &prepare_next); |
| 3797 | __ movp(cached_map, FieldOperand(feedback, counter, times_pointer_size, |
| 3798 | FixedArray::kHeaderSize + kPointerSize)); |
| 3799 | __ CompareRoot(cached_map, Heap::kUndefinedValueRootIndex); |
| 3800 | __ j(not_equal, &transition_call); |
| 3801 | __ movp(feedback, FieldOperand(feedback, counter, times_pointer_size, |
| 3802 | FixedArray::kHeaderSize + 2 * kPointerSize)); |
| 3803 | __ leap(feedback, FieldOperand(feedback, Code::kHeaderSize)); |
| 3804 | __ jmp(feedback); |
| 3805 | |
| 3806 | __ bind(&transition_call); |
| 3807 | DCHECK(receiver_map.is(VectorStoreTransitionDescriptor::MapRegister())); |
| 3808 | __ movp(receiver_map, FieldOperand(cached_map, WeakCell::kValueOffset)); |
| 3809 | // The weak cell may have been cleared. |
| 3810 | __ JumpIfSmi(receiver_map, miss); |
| 3811 | // Get the handler in value. |
| 3812 | __ movp(feedback, FieldOperand(feedback, counter, times_pointer_size, |
| 3813 | FixedArray::kHeaderSize + 2 * kPointerSize)); |
| 3814 | __ leap(feedback, FieldOperand(feedback, Code::kHeaderSize)); |
| 3815 | __ jmp(feedback); |
| 3816 | |
| 3817 | __ bind(&prepare_next); |
| 3818 | __ addl(counter, Immediate(3)); |
| 3819 | __ cmpl(counter, length); |
| 3820 | __ j(less, &next_loop); |
| 3821 | |
| 3822 | // We exhausted our array of map handler pairs. |
| 3823 | __ jmp(miss); |
| 3824 | } |
| 3825 | |
| 3826 | |
| 3827 | void VectorKeyedStoreICStub::GenerateImpl(MacroAssembler* masm, bool in_frame) { |
| 3828 | Register receiver = VectorStoreICDescriptor::ReceiverRegister(); // rdx |
| 3829 | Register key = VectorStoreICDescriptor::NameRegister(); // rcx |
| 3830 | Register vector = VectorStoreICDescriptor::VectorRegister(); // rbx |
| 3831 | Register slot = VectorStoreICDescriptor::SlotRegister(); // rdi |
| 3832 | DCHECK(VectorStoreICDescriptor::ValueRegister().is(rax)); // rax |
| 3833 | Register feedback = r8; |
| 3834 | Register integer_slot = r9; |
| 3835 | Register receiver_map = r11; |
| 3836 | DCHECK(!AreAliased(feedback, integer_slot, vector, slot, receiver_map)); |
| 3837 | |
| 3838 | __ SmiToInteger32(integer_slot, slot); |
| 3839 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 3840 | FixedArray::kHeaderSize)); |
| 3841 | |
| 3842 | // Try to quickly handle the monomorphic case without knowing for sure |
| 3843 | // if we have a weak cell in feedback. We do know it's safe to look |
| 3844 | // at WeakCell::kValueOffset. |
| 3845 | Label try_array, load_smi_map, compare_map; |
| 3846 | Label not_array, miss; |
| 3847 | HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, |
| 3848 | integer_slot, &compare_map, &load_smi_map, &try_array); |
| 3849 | |
| 3850 | // Is it a fixed array? |
| 3851 | __ bind(&try_array); |
| 3852 | __ CompareRoot(FieldOperand(feedback, 0), Heap::kFixedArrayMapRootIndex); |
| 3853 | __ j(not_equal, ¬_array); |
| 3854 | HandlePolymorphicKeyedStoreCase(masm, receiver_map, feedback, integer_slot, |
| 3855 | r15, r14, &miss); |
| 3856 | |
| 3857 | __ bind(¬_array); |
| 3858 | Label try_poly_name; |
| 3859 | __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex); |
| 3860 | __ j(not_equal, &try_poly_name); |
| 3861 | |
| 3862 | Handle<Code> megamorphic_stub = |
| 3863 | KeyedStoreIC::ChooseMegamorphicStub(masm->isolate(), GetExtraICState()); |
| 3864 | __ jmp(megamorphic_stub, RelocInfo::CODE_TARGET); |
| 3865 | |
| 3866 | __ bind(&try_poly_name); |
| 3867 | // We might have a name in feedback, and a fixed array in the next slot. |
| 3868 | __ cmpp(key, feedback); |
| 3869 | __ j(not_equal, &miss); |
| 3870 | // If the name comparison succeeded, we know we have a fixed array with |
| 3871 | // at least one map/handler pair. |
| 3872 | __ movp(feedback, FieldOperand(vector, integer_slot, times_pointer_size, |
| 3873 | FixedArray::kHeaderSize + kPointerSize)); |
| 3874 | HandleArrayCases(masm, feedback, receiver_map, integer_slot, r14, r15, false, |
| 3875 | &miss); |
| 3876 | |
| 3877 | __ bind(&miss); |
| 3878 | KeyedStoreIC::GenerateMiss(masm); |
| 3879 | |
| 3880 | __ bind(&load_smi_map); |
| 3881 | __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); |
| 3882 | __ jmp(&compare_map); |
| 3883 | } |
| 3884 | |
| 3885 | |
| 3886 | void CallICTrampolineStub::Generate(MacroAssembler* masm) { |
| 3887 | __ EmitLoadTypeFeedbackVector(rbx); |
| 3888 | CallICStub stub(isolate(), state()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3889 | __ jmp(stub.GetCode(), RelocInfo::CODE_TARGET); |
| 3890 | } |
| 3891 | |
| 3892 | |
| 3893 | void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) { |
| 3894 | if (masm->isolate()->function_entry_hook() != NULL) { |
| 3895 | ProfileEntryHookStub stub(masm->isolate()); |
| 3896 | masm->CallStub(&stub); |
| 3897 | } |
| 3898 | } |
| 3899 | |
| 3900 | |
| 3901 | void ProfileEntryHookStub::Generate(MacroAssembler* masm) { |
| 3902 | // This stub can be called from essentially anywhere, so it needs to save |
| 3903 | // all volatile and callee-save registers. |
| 3904 | const size_t kNumSavedRegisters = 2; |
| 3905 | __ pushq(arg_reg_1); |
| 3906 | __ pushq(arg_reg_2); |
| 3907 | |
| 3908 | // Calculate the original stack pointer and store it in the second arg. |
| 3909 | __ leap(arg_reg_2, |
| 3910 | Operand(rsp, kNumSavedRegisters * kRegisterSize + kPCOnStackSize)); |
| 3911 | |
| 3912 | // Calculate the function address to the first arg. |
| 3913 | __ movp(arg_reg_1, Operand(rsp, kNumSavedRegisters * kRegisterSize)); |
| 3914 | __ subp(arg_reg_1, Immediate(Assembler::kShortCallInstructionLength)); |
| 3915 | |
| 3916 | // Save the remainder of the volatile registers. |
| 3917 | masm->PushCallerSaved(kSaveFPRegs, arg_reg_1, arg_reg_2); |
| 3918 | |
| 3919 | // Call the entry hook function. |
| 3920 | __ Move(rax, FUNCTION_ADDR(isolate()->function_entry_hook()), |
| 3921 | Assembler::RelocInfoNone()); |
| 3922 | |
| 3923 | AllowExternalCallThatCantCauseGC scope(masm); |
| 3924 | |
| 3925 | const int kArgumentCount = 2; |
| 3926 | __ PrepareCallCFunction(kArgumentCount); |
| 3927 | __ CallCFunction(rax, kArgumentCount); |
| 3928 | |
| 3929 | // Restore volatile regs. |
| 3930 | masm->PopCallerSaved(kSaveFPRegs, arg_reg_1, arg_reg_2); |
| 3931 | __ popq(arg_reg_2); |
| 3932 | __ popq(arg_reg_1); |
| 3933 | |
| 3934 | __ Ret(); |
| 3935 | } |
| 3936 | |
| 3937 | |
| 3938 | template<class T> |
| 3939 | static void CreateArrayDispatch(MacroAssembler* masm, |
| 3940 | AllocationSiteOverrideMode mode) { |
| 3941 | if (mode == DISABLE_ALLOCATION_SITES) { |
| 3942 | T stub(masm->isolate(), GetInitialFastElementsKind(), mode); |
| 3943 | __ TailCallStub(&stub); |
| 3944 | } else if (mode == DONT_OVERRIDE) { |
| 3945 | int last_index = GetSequenceIndexFromFastElementsKind( |
| 3946 | TERMINAL_FAST_ELEMENTS_KIND); |
| 3947 | for (int i = 0; i <= last_index; ++i) { |
| 3948 | Label next; |
| 3949 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 3950 | __ cmpl(rdx, Immediate(kind)); |
| 3951 | __ j(not_equal, &next); |
| 3952 | T stub(masm->isolate(), kind); |
| 3953 | __ TailCallStub(&stub); |
| 3954 | __ bind(&next); |
| 3955 | } |
| 3956 | |
| 3957 | // If we reached this point there is a problem. |
| 3958 | __ Abort(kUnexpectedElementsKindInArrayConstructor); |
| 3959 | } else { |
| 3960 | UNREACHABLE(); |
| 3961 | } |
| 3962 | } |
| 3963 | |
| 3964 | |
| 3965 | static void CreateArrayDispatchOneArgument(MacroAssembler* masm, |
| 3966 | AllocationSiteOverrideMode mode) { |
| 3967 | // rbx - allocation site (if mode != DISABLE_ALLOCATION_SITES) |
| 3968 | // rdx - kind (if mode != DISABLE_ALLOCATION_SITES) |
| 3969 | // rax - number of arguments |
| 3970 | // rdi - constructor? |
| 3971 | // rsp[0] - return address |
| 3972 | // rsp[8] - last argument |
| 3973 | Handle<Object> undefined_sentinel( |
| 3974 | masm->isolate()->heap()->undefined_value(), |
| 3975 | masm->isolate()); |
| 3976 | |
| 3977 | Label normal_sequence; |
| 3978 | if (mode == DONT_OVERRIDE) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3979 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 3980 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 3981 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 3982 | STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); |
| 3983 | STATIC_ASSERT(FAST_DOUBLE_ELEMENTS == 4); |
| 3984 | STATIC_ASSERT(FAST_HOLEY_DOUBLE_ELEMENTS == 5); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3985 | |
| 3986 | // is the low bit set? If so, we are holey and that is good. |
| 3987 | __ testb(rdx, Immediate(1)); |
| 3988 | __ j(not_zero, &normal_sequence); |
| 3989 | } |
| 3990 | |
| 3991 | // look at the first argument |
| 3992 | StackArgumentsAccessor args(rsp, 1, ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 3993 | __ movp(rcx, args.GetArgumentOperand(0)); |
| 3994 | __ testp(rcx, rcx); |
| 3995 | __ j(zero, &normal_sequence); |
| 3996 | |
| 3997 | if (mode == DISABLE_ALLOCATION_SITES) { |
| 3998 | ElementsKind initial = GetInitialFastElementsKind(); |
| 3999 | ElementsKind holey_initial = GetHoleyElementsKind(initial); |
| 4000 | |
| 4001 | ArraySingleArgumentConstructorStub stub_holey(masm->isolate(), |
| 4002 | holey_initial, |
| 4003 | DISABLE_ALLOCATION_SITES); |
| 4004 | __ TailCallStub(&stub_holey); |
| 4005 | |
| 4006 | __ bind(&normal_sequence); |
| 4007 | ArraySingleArgumentConstructorStub stub(masm->isolate(), |
| 4008 | initial, |
| 4009 | DISABLE_ALLOCATION_SITES); |
| 4010 | __ TailCallStub(&stub); |
| 4011 | } else if (mode == DONT_OVERRIDE) { |
| 4012 | // We are going to create a holey array, but our kind is non-holey. |
| 4013 | // Fix kind and retry (only if we have an allocation site in the slot). |
| 4014 | __ incl(rdx); |
| 4015 | |
| 4016 | if (FLAG_debug_code) { |
| 4017 | Handle<Map> allocation_site_map = |
| 4018 | masm->isolate()->factory()->allocation_site_map(); |
| 4019 | __ Cmp(FieldOperand(rbx, 0), allocation_site_map); |
| 4020 | __ Assert(equal, kExpectedAllocationSite); |
| 4021 | } |
| 4022 | |
| 4023 | // Save the resulting elements kind in type info. We can't just store r3 |
| 4024 | // in the AllocationSite::transition_info field because elements kind is |
| 4025 | // restricted to a portion of the field...upper bits need to be left alone. |
| 4026 | STATIC_ASSERT(AllocationSite::ElementsKindBits::kShift == 0); |
| 4027 | __ SmiAddConstant(FieldOperand(rbx, AllocationSite::kTransitionInfoOffset), |
| 4028 | Smi::FromInt(kFastElementsKindPackedToHoley)); |
| 4029 | |
| 4030 | __ bind(&normal_sequence); |
| 4031 | int last_index = GetSequenceIndexFromFastElementsKind( |
| 4032 | TERMINAL_FAST_ELEMENTS_KIND); |
| 4033 | for (int i = 0; i <= last_index; ++i) { |
| 4034 | Label next; |
| 4035 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 4036 | __ cmpl(rdx, Immediate(kind)); |
| 4037 | __ j(not_equal, &next); |
| 4038 | ArraySingleArgumentConstructorStub stub(masm->isolate(), kind); |
| 4039 | __ TailCallStub(&stub); |
| 4040 | __ bind(&next); |
| 4041 | } |
| 4042 | |
| 4043 | // If we reached this point there is a problem. |
| 4044 | __ Abort(kUnexpectedElementsKindInArrayConstructor); |
| 4045 | } else { |
| 4046 | UNREACHABLE(); |
| 4047 | } |
| 4048 | } |
| 4049 | |
| 4050 | |
| 4051 | template<class T> |
| 4052 | static void ArrayConstructorStubAheadOfTimeHelper(Isolate* isolate) { |
| 4053 | int to_index = GetSequenceIndexFromFastElementsKind( |
| 4054 | TERMINAL_FAST_ELEMENTS_KIND); |
| 4055 | for (int i = 0; i <= to_index; ++i) { |
| 4056 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 4057 | T stub(isolate, kind); |
| 4058 | stub.GetCode(); |
| 4059 | if (AllocationSite::GetMode(kind) != DONT_TRACK_ALLOCATION_SITE) { |
| 4060 | T stub1(isolate, kind, DISABLE_ALLOCATION_SITES); |
| 4061 | stub1.GetCode(); |
| 4062 | } |
| 4063 | } |
| 4064 | } |
| 4065 | |
| 4066 | |
| 4067 | void ArrayConstructorStubBase::GenerateStubsAheadOfTime(Isolate* isolate) { |
| 4068 | ArrayConstructorStubAheadOfTimeHelper<ArrayNoArgumentConstructorStub>( |
| 4069 | isolate); |
| 4070 | ArrayConstructorStubAheadOfTimeHelper<ArraySingleArgumentConstructorStub>( |
| 4071 | isolate); |
| 4072 | ArrayConstructorStubAheadOfTimeHelper<ArrayNArgumentsConstructorStub>( |
| 4073 | isolate); |
| 4074 | } |
| 4075 | |
| 4076 | |
| 4077 | void InternalArrayConstructorStubBase::GenerateStubsAheadOfTime( |
| 4078 | Isolate* isolate) { |
| 4079 | ElementsKind kinds[2] = { FAST_ELEMENTS, FAST_HOLEY_ELEMENTS }; |
| 4080 | for (int i = 0; i < 2; i++) { |
| 4081 | // For internal arrays we only need a few things |
| 4082 | InternalArrayNoArgumentConstructorStub stubh1(isolate, kinds[i]); |
| 4083 | stubh1.GetCode(); |
| 4084 | InternalArraySingleArgumentConstructorStub stubh2(isolate, kinds[i]); |
| 4085 | stubh2.GetCode(); |
| 4086 | InternalArrayNArgumentsConstructorStub stubh3(isolate, kinds[i]); |
| 4087 | stubh3.GetCode(); |
| 4088 | } |
| 4089 | } |
| 4090 | |
| 4091 | |
| 4092 | void ArrayConstructorStub::GenerateDispatchToArrayStub( |
| 4093 | MacroAssembler* masm, |
| 4094 | AllocationSiteOverrideMode mode) { |
| 4095 | if (argument_count() == ANY) { |
| 4096 | Label not_zero_case, not_one_case; |
| 4097 | __ testp(rax, rax); |
| 4098 | __ j(not_zero, ¬_zero_case); |
| 4099 | CreateArrayDispatch<ArrayNoArgumentConstructorStub>(masm, mode); |
| 4100 | |
| 4101 | __ bind(¬_zero_case); |
| 4102 | __ cmpl(rax, Immediate(1)); |
| 4103 | __ j(greater, ¬_one_case); |
| 4104 | CreateArrayDispatchOneArgument(masm, mode); |
| 4105 | |
| 4106 | __ bind(¬_one_case); |
| 4107 | CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm, mode); |
| 4108 | } else if (argument_count() == NONE) { |
| 4109 | CreateArrayDispatch<ArrayNoArgumentConstructorStub>(masm, mode); |
| 4110 | } else if (argument_count() == ONE) { |
| 4111 | CreateArrayDispatchOneArgument(masm, mode); |
| 4112 | } else if (argument_count() == MORE_THAN_ONE) { |
| 4113 | CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm, mode); |
| 4114 | } else { |
| 4115 | UNREACHABLE(); |
| 4116 | } |
| 4117 | } |
| 4118 | |
| 4119 | |
| 4120 | void ArrayConstructorStub::Generate(MacroAssembler* masm) { |
| 4121 | // ----------- S t a t e ------------- |
| 4122 | // -- rax : argc |
| 4123 | // -- rbx : AllocationSite or undefined |
| 4124 | // -- rdi : constructor |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4125 | // -- rdx : new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4126 | // -- rsp[0] : return address |
| 4127 | // -- rsp[8] : last argument |
| 4128 | // ----------------------------------- |
| 4129 | if (FLAG_debug_code) { |
| 4130 | // The array construct code is only set for the global and natives |
| 4131 | // builtin Array functions which always have maps. |
| 4132 | |
| 4133 | // Initial map for the builtin Array function should be a map. |
| 4134 | __ movp(rcx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4135 | // Will both indicate a NULL and a Smi. |
| 4136 | STATIC_ASSERT(kSmiTag == 0); |
| 4137 | Condition not_smi = NegateCondition(masm->CheckSmi(rcx)); |
| 4138 | __ Check(not_smi, kUnexpectedInitialMapForArrayFunction); |
| 4139 | __ CmpObjectType(rcx, MAP_TYPE, rcx); |
| 4140 | __ Check(equal, kUnexpectedInitialMapForArrayFunction); |
| 4141 | |
| 4142 | // We should either have undefined in rbx or a valid AllocationSite |
| 4143 | __ AssertUndefinedOrAllocationSite(rbx); |
| 4144 | } |
| 4145 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4146 | // Enter the context of the Array function. |
| 4147 | __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 4148 | |
| 4149 | Label subclassing; |
| 4150 | __ cmpp(rdi, rdx); |
| 4151 | __ j(not_equal, &subclassing); |
| 4152 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4153 | Label no_info; |
| 4154 | // If the feedback vector is the undefined value call an array constructor |
| 4155 | // that doesn't use AllocationSites. |
| 4156 | __ CompareRoot(rbx, Heap::kUndefinedValueRootIndex); |
| 4157 | __ j(equal, &no_info); |
| 4158 | |
| 4159 | // Only look at the lower 16 bits of the transition info. |
| 4160 | __ movp(rdx, FieldOperand(rbx, AllocationSite::kTransitionInfoOffset)); |
| 4161 | __ SmiToInteger32(rdx, rdx); |
| 4162 | STATIC_ASSERT(AllocationSite::ElementsKindBits::kShift == 0); |
| 4163 | __ andp(rdx, Immediate(AllocationSite::ElementsKindBits::kMask)); |
| 4164 | GenerateDispatchToArrayStub(masm, DONT_OVERRIDE); |
| 4165 | |
| 4166 | __ bind(&no_info); |
| 4167 | GenerateDispatchToArrayStub(masm, DISABLE_ALLOCATION_SITES); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4168 | |
| 4169 | // Subclassing |
| 4170 | __ bind(&subclassing); |
| 4171 | switch (argument_count()) { |
| 4172 | case ANY: |
| 4173 | case MORE_THAN_ONE: { |
| 4174 | StackArgumentsAccessor args(rsp, rax); |
| 4175 | __ movp(args.GetReceiverOperand(), rdi); |
| 4176 | __ addp(rax, Immediate(3)); |
| 4177 | break; |
| 4178 | } |
| 4179 | case NONE: { |
| 4180 | StackArgumentsAccessor args(rsp, 0); |
| 4181 | __ movp(args.GetReceiverOperand(), rdi); |
| 4182 | __ Set(rax, 3); |
| 4183 | break; |
| 4184 | } |
| 4185 | case ONE: { |
| 4186 | StackArgumentsAccessor args(rsp, 1); |
| 4187 | __ movp(args.GetReceiverOperand(), rdi); |
| 4188 | __ Set(rax, 4); |
| 4189 | break; |
| 4190 | } |
| 4191 | } |
| 4192 | __ PopReturnAddressTo(rcx); |
| 4193 | __ Push(rdx); |
| 4194 | __ Push(rbx); |
| 4195 | __ PushReturnAddressFrom(rcx); |
| 4196 | __ JumpToExternalReference(ExternalReference(Runtime::kNewArray, isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4197 | } |
| 4198 | |
| 4199 | |
| 4200 | void InternalArrayConstructorStub::GenerateCase( |
| 4201 | MacroAssembler* masm, ElementsKind kind) { |
| 4202 | Label not_zero_case, not_one_case; |
| 4203 | Label normal_sequence; |
| 4204 | |
| 4205 | __ testp(rax, rax); |
| 4206 | __ j(not_zero, ¬_zero_case); |
| 4207 | InternalArrayNoArgumentConstructorStub stub0(isolate(), kind); |
| 4208 | __ TailCallStub(&stub0); |
| 4209 | |
| 4210 | __ bind(¬_zero_case); |
| 4211 | __ cmpl(rax, Immediate(1)); |
| 4212 | __ j(greater, ¬_one_case); |
| 4213 | |
| 4214 | if (IsFastPackedElementsKind(kind)) { |
| 4215 | // We might need to create a holey array |
| 4216 | // look at the first argument |
| 4217 | StackArgumentsAccessor args(rsp, 1, ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 4218 | __ movp(rcx, args.GetArgumentOperand(0)); |
| 4219 | __ testp(rcx, rcx); |
| 4220 | __ j(zero, &normal_sequence); |
| 4221 | |
| 4222 | InternalArraySingleArgumentConstructorStub |
| 4223 | stub1_holey(isolate(), GetHoleyElementsKind(kind)); |
| 4224 | __ TailCallStub(&stub1_holey); |
| 4225 | } |
| 4226 | |
| 4227 | __ bind(&normal_sequence); |
| 4228 | InternalArraySingleArgumentConstructorStub stub1(isolate(), kind); |
| 4229 | __ TailCallStub(&stub1); |
| 4230 | |
| 4231 | __ bind(¬_one_case); |
| 4232 | InternalArrayNArgumentsConstructorStub stubN(isolate(), kind); |
| 4233 | __ TailCallStub(&stubN); |
| 4234 | } |
| 4235 | |
| 4236 | |
| 4237 | void InternalArrayConstructorStub::Generate(MacroAssembler* masm) { |
| 4238 | // ----------- S t a t e ------------- |
| 4239 | // -- rax : argc |
| 4240 | // -- rdi : constructor |
| 4241 | // -- rsp[0] : return address |
| 4242 | // -- rsp[8] : last argument |
| 4243 | // ----------------------------------- |
| 4244 | |
| 4245 | if (FLAG_debug_code) { |
| 4246 | // The array construct code is only set for the global and natives |
| 4247 | // builtin Array functions which always have maps. |
| 4248 | |
| 4249 | // Initial map for the builtin Array function should be a map. |
| 4250 | __ movp(rcx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4251 | // Will both indicate a NULL and a Smi. |
| 4252 | STATIC_ASSERT(kSmiTag == 0); |
| 4253 | Condition not_smi = NegateCondition(masm->CheckSmi(rcx)); |
| 4254 | __ Check(not_smi, kUnexpectedInitialMapForArrayFunction); |
| 4255 | __ CmpObjectType(rcx, MAP_TYPE, rcx); |
| 4256 | __ Check(equal, kUnexpectedInitialMapForArrayFunction); |
| 4257 | } |
| 4258 | |
| 4259 | // Figure out the right elements kind |
| 4260 | __ movp(rcx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4261 | |
| 4262 | // Load the map's "bit field 2" into |result|. We only need the first byte, |
| 4263 | // but the following masking takes care of that anyway. |
| 4264 | __ movzxbp(rcx, FieldOperand(rcx, Map::kBitField2Offset)); |
| 4265 | // Retrieve elements_kind from bit field 2. |
| 4266 | __ DecodeField<Map::ElementsKindBits>(rcx); |
| 4267 | |
| 4268 | if (FLAG_debug_code) { |
| 4269 | Label done; |
| 4270 | __ cmpl(rcx, Immediate(FAST_ELEMENTS)); |
| 4271 | __ j(equal, &done); |
| 4272 | __ cmpl(rcx, Immediate(FAST_HOLEY_ELEMENTS)); |
| 4273 | __ Assert(equal, |
| 4274 | kInvalidElementsKindForInternalArrayOrInternalPackedArray); |
| 4275 | __ bind(&done); |
| 4276 | } |
| 4277 | |
| 4278 | Label fast_elements_case; |
| 4279 | __ cmpl(rcx, Immediate(FAST_ELEMENTS)); |
| 4280 | __ j(equal, &fast_elements_case); |
| 4281 | GenerateCase(masm, FAST_HOLEY_ELEMENTS); |
| 4282 | |
| 4283 | __ bind(&fast_elements_case); |
| 4284 | GenerateCase(masm, FAST_ELEMENTS); |
| 4285 | } |
| 4286 | |
| 4287 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4288 | void FastNewObjectStub::Generate(MacroAssembler* masm) { |
| 4289 | // ----------- S t a t e ------------- |
| 4290 | // -- rdi : target |
| 4291 | // -- rdx : new target |
| 4292 | // -- rsi : context |
| 4293 | // -- rsp[0] : return address |
| 4294 | // ----------------------------------- |
| 4295 | __ AssertFunction(rdi); |
| 4296 | __ AssertReceiver(rdx); |
| 4297 | |
| 4298 | // Verify that the new target is a JSFunction. |
| 4299 | Label new_object; |
| 4300 | __ CmpObjectType(rdx, JS_FUNCTION_TYPE, rbx); |
| 4301 | __ j(not_equal, &new_object); |
| 4302 | |
| 4303 | // Load the initial map and verify that it's in fact a map. |
| 4304 | __ movp(rcx, FieldOperand(rdx, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4305 | __ JumpIfSmi(rcx, &new_object); |
| 4306 | __ CmpObjectType(rcx, MAP_TYPE, rbx); |
| 4307 | __ j(not_equal, &new_object); |
| 4308 | |
| 4309 | // Fall back to runtime if the target differs from the new target's |
| 4310 | // initial map constructor. |
| 4311 | __ cmpp(rdi, FieldOperand(rcx, Map::kConstructorOrBackPointerOffset)); |
| 4312 | __ j(not_equal, &new_object); |
| 4313 | |
| 4314 | // Allocate the JSObject on the heap. |
| 4315 | Label allocate, done_allocate; |
| 4316 | __ movzxbl(rbx, FieldOperand(rcx, Map::kInstanceSizeOffset)); |
| 4317 | __ leal(rbx, Operand(rbx, times_pointer_size, 0)); |
| 4318 | __ Allocate(rbx, rax, rdi, no_reg, &allocate, NO_ALLOCATION_FLAGS); |
| 4319 | __ bind(&done_allocate); |
| 4320 | |
| 4321 | // Initialize the JSObject fields. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4322 | __ movp(FieldOperand(rax, JSObject::kMapOffset), rcx); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4323 | __ LoadRoot(rbx, Heap::kEmptyFixedArrayRootIndex); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4324 | __ movp(FieldOperand(rax, JSObject::kPropertiesOffset), rbx); |
| 4325 | __ movp(FieldOperand(rax, JSObject::kElementsOffset), rbx); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4326 | STATIC_ASSERT(JSObject::kHeaderSize == 3 * kPointerSize); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4327 | __ leap(rbx, FieldOperand(rax, JSObject::kHeaderSize)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4328 | |
| 4329 | // ----------- S t a t e ------------- |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4330 | // -- rax : result (tagged) |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4331 | // -- rbx : result fields (untagged) |
| 4332 | // -- rdi : result end (untagged) |
| 4333 | // -- rcx : initial map |
| 4334 | // -- rsi : context |
| 4335 | // -- rsp[0] : return address |
| 4336 | // ----------------------------------- |
| 4337 | |
| 4338 | // Perform in-object slack tracking if requested. |
| 4339 | Label slack_tracking; |
| 4340 | STATIC_ASSERT(Map::kNoSlackTracking == 0); |
| 4341 | __ LoadRoot(r11, Heap::kUndefinedValueRootIndex); |
| 4342 | __ testl(FieldOperand(rcx, Map::kBitField3Offset), |
| 4343 | Immediate(Map::ConstructionCounter::kMask)); |
| 4344 | __ j(not_zero, &slack_tracking, Label::kNear); |
| 4345 | { |
| 4346 | // Initialize all in-object fields with undefined. |
| 4347 | __ InitializeFieldsWithFiller(rbx, rdi, r11); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4348 | __ Ret(); |
| 4349 | } |
| 4350 | __ bind(&slack_tracking); |
| 4351 | { |
| 4352 | // Decrease generous allocation count. |
| 4353 | STATIC_ASSERT(Map::ConstructionCounter::kNext == 32); |
| 4354 | __ subl(FieldOperand(rcx, Map::kBitField3Offset), |
| 4355 | Immediate(1 << Map::ConstructionCounter::kShift)); |
| 4356 | |
| 4357 | // Initialize the in-object fields with undefined. |
| 4358 | __ movzxbl(rdx, FieldOperand(rcx, Map::kUnusedPropertyFieldsOffset)); |
| 4359 | __ negp(rdx); |
| 4360 | __ leap(rdx, Operand(rdi, rdx, times_pointer_size, 0)); |
| 4361 | __ InitializeFieldsWithFiller(rbx, rdx, r11); |
| 4362 | |
| 4363 | // Initialize the remaining (reserved) fields with one pointer filler map. |
| 4364 | __ LoadRoot(r11, Heap::kOnePointerFillerMapRootIndex); |
| 4365 | __ InitializeFieldsWithFiller(rdx, rdi, r11); |
| 4366 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4367 | // Check if we can finalize the instance size. |
| 4368 | Label finalize; |
| 4369 | STATIC_ASSERT(Map::kSlackTrackingCounterEnd == 1); |
| 4370 | __ testl(FieldOperand(rcx, Map::kBitField3Offset), |
| 4371 | Immediate(Map::ConstructionCounter::kMask)); |
| 4372 | __ j(zero, &finalize, Label::kNear); |
| 4373 | __ Ret(); |
| 4374 | |
| 4375 | // Finalize the instance size. |
| 4376 | __ bind(&finalize); |
| 4377 | { |
| 4378 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 4379 | __ Push(rax); |
| 4380 | __ Push(rcx); |
| 4381 | __ CallRuntime(Runtime::kFinalizeInstanceSize); |
| 4382 | __ Pop(rax); |
| 4383 | } |
| 4384 | __ Ret(); |
| 4385 | } |
| 4386 | |
| 4387 | // Fall back to %AllocateInNewSpace. |
| 4388 | __ bind(&allocate); |
| 4389 | { |
| 4390 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 4391 | __ Integer32ToSmi(rbx, rbx); |
| 4392 | __ Push(rcx); |
| 4393 | __ Push(rbx); |
| 4394 | __ CallRuntime(Runtime::kAllocateInNewSpace); |
| 4395 | __ Pop(rcx); |
| 4396 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4397 | __ movzxbl(rbx, FieldOperand(rcx, Map::kInstanceSizeOffset)); |
| 4398 | __ leap(rdi, Operand(rax, rbx, times_pointer_size, 0)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4399 | STATIC_ASSERT(kHeapObjectTag == 1); |
| 4400 | __ decp(rdi); // Remove the tag from the end address. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4401 | __ jmp(&done_allocate); |
| 4402 | |
| 4403 | // Fall back to %NewObject. |
| 4404 | __ bind(&new_object); |
| 4405 | __ PopReturnAddressTo(rcx); |
| 4406 | __ Push(rdi); |
| 4407 | __ Push(rdx); |
| 4408 | __ PushReturnAddressFrom(rcx); |
| 4409 | __ TailCallRuntime(Runtime::kNewObject); |
| 4410 | } |
| 4411 | |
| 4412 | |
| 4413 | void FastNewRestParameterStub::Generate(MacroAssembler* masm) { |
| 4414 | // ----------- S t a t e ------------- |
| 4415 | // -- rdi : function |
| 4416 | // -- rsi : context |
| 4417 | // -- rbp : frame pointer |
| 4418 | // -- rsp[0] : return address |
| 4419 | // ----------------------------------- |
| 4420 | __ AssertFunction(rdi); |
| 4421 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4422 | // Make rdx point to the JavaScript frame. |
| 4423 | __ movp(rdx, rbp); |
| 4424 | if (skip_stub_frame()) { |
| 4425 | // For Ignition we need to skip the handler/stub frame to reach the |
| 4426 | // JavaScript frame for the function. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4427 | __ movp(rdx, Operand(rdx, StandardFrameConstants::kCallerFPOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4428 | } |
| 4429 | if (FLAG_debug_code) { |
| 4430 | Label ok; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4431 | __ cmpp(rdi, Operand(rdx, StandardFrameConstants::kFunctionOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4432 | __ j(equal, &ok); |
| 4433 | __ Abort(kInvalidFrameForFastNewRestArgumentsStub); |
| 4434 | __ bind(&ok); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4435 | } |
| 4436 | |
| 4437 | // Check if we have rest parameters (only possible if we have an |
| 4438 | // arguments adaptor frame below the function frame). |
| 4439 | Label no_rest_parameters; |
| 4440 | __ movp(rbx, Operand(rdx, StandardFrameConstants::kCallerFPOffset)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4441 | __ Cmp(Operand(rbx, CommonFrameConstants::kContextOrFrameTypeOffset), |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4442 | Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
| 4443 | __ j(not_equal, &no_rest_parameters, Label::kNear); |
| 4444 | |
| 4445 | // Check if the arguments adaptor frame contains more arguments than |
| 4446 | // specified by the function's internal formal parameter count. |
| 4447 | Label rest_parameters; |
| 4448 | __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 4449 | __ LoadSharedFunctionInfoSpecialField( |
| 4450 | rcx, rcx, SharedFunctionInfo::kFormalParameterCountOffset); |
| 4451 | __ SmiToInteger32( |
| 4452 | rax, Operand(rbx, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 4453 | __ subl(rax, rcx); |
| 4454 | __ j(greater, &rest_parameters); |
| 4455 | |
| 4456 | // Return an empty rest parameter array. |
| 4457 | __ bind(&no_rest_parameters); |
| 4458 | { |
| 4459 | // ----------- S t a t e ------------- |
| 4460 | // -- rsi : context |
| 4461 | // -- rsp[0] : return address |
| 4462 | // ----------------------------------- |
| 4463 | |
| 4464 | // Allocate an empty rest parameter array. |
| 4465 | Label allocate, done_allocate; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4466 | __ Allocate(JSArray::kSize, rax, rdx, rcx, &allocate, NO_ALLOCATION_FLAGS); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4467 | __ bind(&done_allocate); |
| 4468 | |
| 4469 | // Setup the rest parameter array in rax. |
| 4470 | __ LoadNativeContextSlot(Context::JS_ARRAY_FAST_ELEMENTS_MAP_INDEX, rcx); |
| 4471 | __ movp(FieldOperand(rax, JSArray::kMapOffset), rcx); |
| 4472 | __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex); |
| 4473 | __ movp(FieldOperand(rax, JSArray::kPropertiesOffset), rcx); |
| 4474 | __ movp(FieldOperand(rax, JSArray::kElementsOffset), rcx); |
| 4475 | __ movp(FieldOperand(rax, JSArray::kLengthOffset), Immediate(0)); |
| 4476 | STATIC_ASSERT(JSArray::kSize == 4 * kPointerSize); |
| 4477 | __ Ret(); |
| 4478 | |
| 4479 | // Fall back to %AllocateInNewSpace. |
| 4480 | __ bind(&allocate); |
| 4481 | { |
| 4482 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 4483 | __ Push(Smi::FromInt(JSArray::kSize)); |
| 4484 | __ CallRuntime(Runtime::kAllocateInNewSpace); |
| 4485 | } |
| 4486 | __ jmp(&done_allocate); |
| 4487 | } |
| 4488 | |
| 4489 | __ bind(&rest_parameters); |
| 4490 | { |
| 4491 | // Compute the pointer to the first rest parameter (skippping the receiver). |
| 4492 | __ leap(rbx, Operand(rbx, rax, times_pointer_size, |
| 4493 | StandardFrameConstants::kCallerSPOffset - |
| 4494 | 1 * kPointerSize)); |
| 4495 | |
| 4496 | // ----------- S t a t e ------------- |
| 4497 | // -- rsi : context |
| 4498 | // -- rax : number of rest parameters |
| 4499 | // -- rbx : pointer to first rest parameters |
| 4500 | // -- rsp[0] : return address |
| 4501 | // ----------------------------------- |
| 4502 | |
| 4503 | // Allocate space for the rest parameter array plus the backing store. |
| 4504 | Label allocate, done_allocate; |
| 4505 | __ leal(rcx, Operand(rax, times_pointer_size, |
| 4506 | JSArray::kSize + FixedArray::kHeaderSize)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4507 | __ Allocate(rcx, rdx, rdi, no_reg, &allocate, NO_ALLOCATION_FLAGS); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4508 | __ bind(&done_allocate); |
| 4509 | |
| 4510 | // Compute the arguments.length in rdi. |
| 4511 | __ Integer32ToSmi(rdi, rax); |
| 4512 | |
| 4513 | // Setup the elements array in rdx. |
| 4514 | __ LoadRoot(rcx, Heap::kFixedArrayMapRootIndex); |
| 4515 | __ movp(FieldOperand(rdx, FixedArray::kMapOffset), rcx); |
| 4516 | __ movp(FieldOperand(rdx, FixedArray::kLengthOffset), rdi); |
| 4517 | { |
| 4518 | Label loop, done_loop; |
| 4519 | __ Set(rcx, 0); |
| 4520 | __ bind(&loop); |
| 4521 | __ cmpl(rcx, rax); |
| 4522 | __ j(equal, &done_loop, Label::kNear); |
| 4523 | __ movp(kScratchRegister, Operand(rbx, 0 * kPointerSize)); |
| 4524 | __ movp( |
| 4525 | FieldOperand(rdx, rcx, times_pointer_size, FixedArray::kHeaderSize), |
| 4526 | kScratchRegister); |
| 4527 | __ subp(rbx, Immediate(1 * kPointerSize)); |
| 4528 | __ addl(rcx, Immediate(1)); |
| 4529 | __ jmp(&loop); |
| 4530 | __ bind(&done_loop); |
| 4531 | } |
| 4532 | |
| 4533 | // Setup the rest parameter array in rax. |
| 4534 | __ leap(rax, |
| 4535 | Operand(rdx, rax, times_pointer_size, FixedArray::kHeaderSize)); |
| 4536 | __ LoadNativeContextSlot(Context::JS_ARRAY_FAST_ELEMENTS_MAP_INDEX, rcx); |
| 4537 | __ movp(FieldOperand(rax, JSArray::kMapOffset), rcx); |
| 4538 | __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex); |
| 4539 | __ movp(FieldOperand(rax, JSArray::kPropertiesOffset), rcx); |
| 4540 | __ movp(FieldOperand(rax, JSArray::kElementsOffset), rdx); |
| 4541 | __ movp(FieldOperand(rax, JSArray::kLengthOffset), rdi); |
| 4542 | STATIC_ASSERT(JSArray::kSize == 4 * kPointerSize); |
| 4543 | __ Ret(); |
| 4544 | |
| 4545 | // Fall back to %AllocateInNewSpace. |
| 4546 | __ bind(&allocate); |
| 4547 | { |
| 4548 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 4549 | __ Integer32ToSmi(rax, rax); |
| 4550 | __ Integer32ToSmi(rcx, rcx); |
| 4551 | __ Push(rax); |
| 4552 | __ Push(rbx); |
| 4553 | __ Push(rcx); |
| 4554 | __ CallRuntime(Runtime::kAllocateInNewSpace); |
| 4555 | __ movp(rdx, rax); |
| 4556 | __ Pop(rbx); |
| 4557 | __ Pop(rax); |
| 4558 | __ SmiToInteger32(rax, rax); |
| 4559 | } |
| 4560 | __ jmp(&done_allocate); |
| 4561 | } |
| 4562 | } |
| 4563 | |
| 4564 | |
| 4565 | void FastNewSloppyArgumentsStub::Generate(MacroAssembler* masm) { |
| 4566 | // ----------- S t a t e ------------- |
| 4567 | // -- rdi : function |
| 4568 | // -- rsi : context |
| 4569 | // -- rbp : frame pointer |
| 4570 | // -- rsp[0] : return address |
| 4571 | // ----------------------------------- |
| 4572 | __ AssertFunction(rdi); |
| 4573 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4574 | // Make r9 point to the JavaScript frame. |
| 4575 | __ movp(r9, rbp); |
| 4576 | if (skip_stub_frame()) { |
| 4577 | // For Ignition we need to skip the handler/stub frame to reach the |
| 4578 | // JavaScript frame for the function. |
| 4579 | __ movp(r9, Operand(r9, StandardFrameConstants::kCallerFPOffset)); |
| 4580 | } |
| 4581 | if (FLAG_debug_code) { |
| 4582 | Label ok; |
| 4583 | __ cmpp(rdi, Operand(r9, StandardFrameConstants::kFunctionOffset)); |
| 4584 | __ j(equal, &ok); |
| 4585 | __ Abort(kInvalidFrameForFastNewRestArgumentsStub); |
| 4586 | __ bind(&ok); |
| 4587 | } |
| 4588 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4589 | // TODO(bmeurer): Cleanup to match the FastNewStrictArgumentsStub. |
| 4590 | __ movp(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 4591 | __ LoadSharedFunctionInfoSpecialField( |
| 4592 | rcx, rcx, SharedFunctionInfo::kFormalParameterCountOffset); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4593 | __ leap(rdx, Operand(r9, rcx, times_pointer_size, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4594 | StandardFrameConstants::kCallerSPOffset)); |
| 4595 | __ Integer32ToSmi(rcx, rcx); |
| 4596 | |
| 4597 | // rcx : number of parameters (tagged) |
| 4598 | // rdx : parameters pointer |
| 4599 | // rdi : function |
| 4600 | // rsp[0] : return address |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4601 | // r9 : JavaScript frame pointer. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4602 | // Registers used over the whole function: |
| 4603 | // rbx: the mapped parameter count (untagged) |
| 4604 | // rax: the allocated object (tagged). |
| 4605 | Factory* factory = isolate()->factory(); |
| 4606 | |
| 4607 | __ SmiToInteger64(rbx, rcx); |
| 4608 | // rbx = parameter count (untagged) |
| 4609 | |
| 4610 | // Check if the calling frame is an arguments adaptor frame. |
| 4611 | Label adaptor_frame, try_allocate, runtime; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4612 | __ movp(rax, Operand(r9, StandardFrameConstants::kCallerFPOffset)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4613 | __ movp(r8, Operand(rax, CommonFrameConstants::kContextOrFrameTypeOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4614 | __ Cmp(r8, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
| 4615 | __ j(equal, &adaptor_frame); |
| 4616 | |
| 4617 | // No adaptor, parameter count = argument count. |
| 4618 | __ movp(r11, rbx); |
| 4619 | __ jmp(&try_allocate, Label::kNear); |
| 4620 | |
| 4621 | // We have an adaptor frame. Patch the parameters pointer. |
| 4622 | __ bind(&adaptor_frame); |
| 4623 | __ SmiToInteger64( |
| 4624 | r11, Operand(rax, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 4625 | __ leap(rdx, Operand(rax, r11, times_pointer_size, |
| 4626 | StandardFrameConstants::kCallerSPOffset)); |
| 4627 | |
| 4628 | // rbx = parameter count (untagged) |
| 4629 | // r11 = argument count (untagged) |
| 4630 | // Compute the mapped parameter count = min(rbx, r11) in rbx. |
| 4631 | __ cmpp(rbx, r11); |
| 4632 | __ j(less_equal, &try_allocate, Label::kNear); |
| 4633 | __ movp(rbx, r11); |
| 4634 | |
| 4635 | __ bind(&try_allocate); |
| 4636 | |
| 4637 | // Compute the sizes of backing store, parameter map, and arguments object. |
| 4638 | // 1. Parameter map, has 2 extra words containing context and backing store. |
| 4639 | const int kParameterMapHeaderSize = |
| 4640 | FixedArray::kHeaderSize + 2 * kPointerSize; |
| 4641 | Label no_parameter_map; |
| 4642 | __ xorp(r8, r8); |
| 4643 | __ testp(rbx, rbx); |
| 4644 | __ j(zero, &no_parameter_map, Label::kNear); |
| 4645 | __ leap(r8, Operand(rbx, times_pointer_size, kParameterMapHeaderSize)); |
| 4646 | __ bind(&no_parameter_map); |
| 4647 | |
| 4648 | // 2. Backing store. |
| 4649 | __ leap(r8, Operand(r8, r11, times_pointer_size, FixedArray::kHeaderSize)); |
| 4650 | |
| 4651 | // 3. Arguments object. |
| 4652 | __ addp(r8, Immediate(JSSloppyArgumentsObject::kSize)); |
| 4653 | |
| 4654 | // Do the allocation of all three objects in one go. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4655 | __ Allocate(r8, rax, r9, no_reg, &runtime, NO_ALLOCATION_FLAGS); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4656 | |
| 4657 | // rax = address of new object(s) (tagged) |
| 4658 | // r11 = argument count (untagged) |
| 4659 | // Get the arguments map from the current native context into r9. |
| 4660 | Label has_mapped_parameters, instantiate; |
| 4661 | __ movp(r9, NativeContextOperand()); |
| 4662 | __ testp(rbx, rbx); |
| 4663 | __ j(not_zero, &has_mapped_parameters, Label::kNear); |
| 4664 | |
| 4665 | const int kIndex = Context::SLOPPY_ARGUMENTS_MAP_INDEX; |
| 4666 | __ movp(r9, Operand(r9, Context::SlotOffset(kIndex))); |
| 4667 | __ jmp(&instantiate, Label::kNear); |
| 4668 | |
| 4669 | const int kAliasedIndex = Context::FAST_ALIASED_ARGUMENTS_MAP_INDEX; |
| 4670 | __ bind(&has_mapped_parameters); |
| 4671 | __ movp(r9, Operand(r9, Context::SlotOffset(kAliasedIndex))); |
| 4672 | __ bind(&instantiate); |
| 4673 | |
| 4674 | // rax = address of new object (tagged) |
| 4675 | // rbx = mapped parameter count (untagged) |
| 4676 | // r11 = argument count (untagged) |
| 4677 | // r9 = address of arguments map (tagged) |
| 4678 | __ movp(FieldOperand(rax, JSObject::kMapOffset), r9); |
| 4679 | __ LoadRoot(kScratchRegister, Heap::kEmptyFixedArrayRootIndex); |
| 4680 | __ movp(FieldOperand(rax, JSObject::kPropertiesOffset), kScratchRegister); |
| 4681 | __ movp(FieldOperand(rax, JSObject::kElementsOffset), kScratchRegister); |
| 4682 | |
| 4683 | // Set up the callee in-object property. |
| 4684 | __ AssertNotSmi(rdi); |
| 4685 | __ movp(FieldOperand(rax, JSSloppyArgumentsObject::kCalleeOffset), rdi); |
| 4686 | |
| 4687 | // Use the length (smi tagged) and set that as an in-object property too. |
| 4688 | // Note: r11 is tagged from here on. |
| 4689 | __ Integer32ToSmi(r11, r11); |
| 4690 | __ movp(FieldOperand(rax, JSSloppyArgumentsObject::kLengthOffset), r11); |
| 4691 | |
| 4692 | // Set up the elements pointer in the allocated arguments object. |
| 4693 | // If we allocated a parameter map, rdi will point there, otherwise to the |
| 4694 | // backing store. |
| 4695 | __ leap(rdi, Operand(rax, JSSloppyArgumentsObject::kSize)); |
| 4696 | __ movp(FieldOperand(rax, JSObject::kElementsOffset), rdi); |
| 4697 | |
| 4698 | // rax = address of new object (tagged) |
| 4699 | // rbx = mapped parameter count (untagged) |
| 4700 | // r11 = argument count (tagged) |
| 4701 | // rdi = address of parameter map or backing store (tagged) |
| 4702 | |
| 4703 | // Initialize parameter map. If there are no mapped arguments, we're done. |
| 4704 | Label skip_parameter_map; |
| 4705 | __ testp(rbx, rbx); |
| 4706 | __ j(zero, &skip_parameter_map); |
| 4707 | |
| 4708 | __ LoadRoot(kScratchRegister, Heap::kSloppyArgumentsElementsMapRootIndex); |
| 4709 | // rbx contains the untagged argument count. Add 2 and tag to write. |
| 4710 | __ movp(FieldOperand(rdi, FixedArray::kMapOffset), kScratchRegister); |
| 4711 | __ Integer64PlusConstantToSmi(r9, rbx, 2); |
| 4712 | __ movp(FieldOperand(rdi, FixedArray::kLengthOffset), r9); |
| 4713 | __ movp(FieldOperand(rdi, FixedArray::kHeaderSize + 0 * kPointerSize), rsi); |
| 4714 | __ leap(r9, Operand(rdi, rbx, times_pointer_size, kParameterMapHeaderSize)); |
| 4715 | __ movp(FieldOperand(rdi, FixedArray::kHeaderSize + 1 * kPointerSize), r9); |
| 4716 | |
| 4717 | // Copy the parameter slots and the holes in the arguments. |
| 4718 | // We need to fill in mapped_parameter_count slots. They index the context, |
| 4719 | // where parameters are stored in reverse order, at |
| 4720 | // MIN_CONTEXT_SLOTS .. MIN_CONTEXT_SLOTS+parameter_count-1 |
| 4721 | // The mapped parameter thus need to get indices |
| 4722 | // MIN_CONTEXT_SLOTS+parameter_count-1 .. |
| 4723 | // MIN_CONTEXT_SLOTS+parameter_count-mapped_parameter_count |
| 4724 | // We loop from right to left. |
| 4725 | Label parameters_loop, parameters_test; |
| 4726 | |
| 4727 | // Load tagged parameter count into r9. |
| 4728 | __ Integer32ToSmi(r9, rbx); |
| 4729 | __ Move(r8, Smi::FromInt(Context::MIN_CONTEXT_SLOTS)); |
| 4730 | __ addp(r8, rcx); |
| 4731 | __ subp(r8, r9); |
| 4732 | __ movp(rcx, rdi); |
| 4733 | __ leap(rdi, Operand(rdi, rbx, times_pointer_size, kParameterMapHeaderSize)); |
| 4734 | __ SmiToInteger64(r9, r9); |
| 4735 | // r9 = loop variable (untagged) |
| 4736 | // r8 = mapping index (tagged) |
| 4737 | // rcx = address of parameter map (tagged) |
| 4738 | // rdi = address of backing store (tagged) |
| 4739 | __ jmp(¶meters_test, Label::kNear); |
| 4740 | |
| 4741 | __ bind(¶meters_loop); |
| 4742 | __ subp(r9, Immediate(1)); |
| 4743 | __ LoadRoot(kScratchRegister, Heap::kTheHoleValueRootIndex); |
| 4744 | __ movp(FieldOperand(rcx, r9, times_pointer_size, kParameterMapHeaderSize), |
| 4745 | r8); |
| 4746 | __ movp(FieldOperand(rdi, r9, times_pointer_size, FixedArray::kHeaderSize), |
| 4747 | kScratchRegister); |
| 4748 | __ SmiAddConstant(r8, r8, Smi::FromInt(1)); |
| 4749 | __ bind(¶meters_test); |
| 4750 | __ testp(r9, r9); |
| 4751 | __ j(not_zero, ¶meters_loop, Label::kNear); |
| 4752 | |
| 4753 | __ bind(&skip_parameter_map); |
| 4754 | |
| 4755 | // r11 = argument count (tagged) |
| 4756 | // rdi = address of backing store (tagged) |
| 4757 | // Copy arguments header and remaining slots (if there are any). |
| 4758 | __ Move(FieldOperand(rdi, FixedArray::kMapOffset), |
| 4759 | factory->fixed_array_map()); |
| 4760 | __ movp(FieldOperand(rdi, FixedArray::kLengthOffset), r11); |
| 4761 | |
| 4762 | Label arguments_loop, arguments_test; |
| 4763 | __ movp(r8, rbx); |
| 4764 | // Untag r11 for the loop below. |
| 4765 | __ SmiToInteger64(r11, r11); |
| 4766 | __ leap(kScratchRegister, Operand(r8, times_pointer_size, 0)); |
| 4767 | __ subp(rdx, kScratchRegister); |
| 4768 | __ jmp(&arguments_test, Label::kNear); |
| 4769 | |
| 4770 | __ bind(&arguments_loop); |
| 4771 | __ subp(rdx, Immediate(kPointerSize)); |
| 4772 | __ movp(r9, Operand(rdx, 0)); |
| 4773 | __ movp(FieldOperand(rdi, r8, |
| 4774 | times_pointer_size, |
| 4775 | FixedArray::kHeaderSize), |
| 4776 | r9); |
| 4777 | __ addp(r8, Immediate(1)); |
| 4778 | |
| 4779 | __ bind(&arguments_test); |
| 4780 | __ cmpp(r8, r11); |
| 4781 | __ j(less, &arguments_loop, Label::kNear); |
| 4782 | |
| 4783 | // Return. |
| 4784 | __ ret(0); |
| 4785 | |
| 4786 | // Do the runtime call to allocate the arguments object. |
| 4787 | // r11 = argument count (untagged) |
| 4788 | __ bind(&runtime); |
| 4789 | __ Integer32ToSmi(r11, r11); |
| 4790 | __ PopReturnAddressTo(rax); |
| 4791 | __ Push(rdi); // Push function. |
| 4792 | __ Push(rdx); // Push parameters pointer. |
| 4793 | __ Push(r11); // Push parameter count. |
| 4794 | __ PushReturnAddressFrom(rax); |
| 4795 | __ TailCallRuntime(Runtime::kNewSloppyArguments); |
| 4796 | } |
| 4797 | |
| 4798 | |
| 4799 | void FastNewStrictArgumentsStub::Generate(MacroAssembler* masm) { |
| 4800 | // ----------- S t a t e ------------- |
| 4801 | // -- rdi : function |
| 4802 | // -- rsi : context |
| 4803 | // -- rbp : frame pointer |
| 4804 | // -- rsp[0] : return address |
| 4805 | // ----------------------------------- |
| 4806 | __ AssertFunction(rdi); |
| 4807 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4808 | // Make rdx point to the JavaScript frame. |
| 4809 | __ movp(rdx, rbp); |
| 4810 | if (skip_stub_frame()) { |
| 4811 | // For Ignition we need to skip the handler/stub frame to reach the |
| 4812 | // JavaScript frame for the function. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4813 | __ movp(rdx, Operand(rdx, StandardFrameConstants::kCallerFPOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4814 | } |
| 4815 | if (FLAG_debug_code) { |
| 4816 | Label ok; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4817 | __ cmpp(rdi, Operand(rdx, StandardFrameConstants::kFunctionOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4818 | __ j(equal, &ok); |
| 4819 | __ Abort(kInvalidFrameForFastNewRestArgumentsStub); |
| 4820 | __ bind(&ok); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4821 | } |
| 4822 | |
| 4823 | // Check if we have an arguments adaptor frame below the function frame. |
| 4824 | Label arguments_adaptor, arguments_done; |
| 4825 | __ movp(rbx, Operand(rdx, StandardFrameConstants::kCallerFPOffset)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 4826 | __ Cmp(Operand(rbx, CommonFrameConstants::kContextOrFrameTypeOffset), |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4827 | Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
| 4828 | __ j(equal, &arguments_adaptor, Label::kNear); |
| 4829 | { |
| 4830 | __ movp(rax, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 4831 | __ LoadSharedFunctionInfoSpecialField( |
| 4832 | rax, rax, SharedFunctionInfo::kFormalParameterCountOffset); |
| 4833 | __ leap(rbx, Operand(rdx, rax, times_pointer_size, |
| 4834 | StandardFrameConstants::kCallerSPOffset - |
| 4835 | 1 * kPointerSize)); |
| 4836 | } |
| 4837 | __ jmp(&arguments_done, Label::kNear); |
| 4838 | __ bind(&arguments_adaptor); |
| 4839 | { |
| 4840 | __ SmiToInteger32( |
| 4841 | rax, Operand(rbx, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 4842 | __ leap(rbx, Operand(rbx, rax, times_pointer_size, |
| 4843 | StandardFrameConstants::kCallerSPOffset - |
| 4844 | 1 * kPointerSize)); |
| 4845 | } |
| 4846 | __ bind(&arguments_done); |
| 4847 | |
| 4848 | // ----------- S t a t e ------------- |
| 4849 | // -- rax : number of arguments |
| 4850 | // -- rbx : pointer to the first argument |
| 4851 | // -- rsi : context |
| 4852 | // -- rsp[0] : return address |
| 4853 | // ----------------------------------- |
| 4854 | |
| 4855 | // Allocate space for the strict arguments object plus the backing store. |
| 4856 | Label allocate, done_allocate; |
| 4857 | __ leal(rcx, Operand(rax, times_pointer_size, JSStrictArgumentsObject::kSize + |
| 4858 | FixedArray::kHeaderSize)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 4859 | __ Allocate(rcx, rdx, rdi, no_reg, &allocate, NO_ALLOCATION_FLAGS); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 4860 | __ bind(&done_allocate); |
| 4861 | |
| 4862 | // Compute the arguments.length in rdi. |
| 4863 | __ Integer32ToSmi(rdi, rax); |
| 4864 | |
| 4865 | // Setup the elements array in rdx. |
| 4866 | __ LoadRoot(rcx, Heap::kFixedArrayMapRootIndex); |
| 4867 | __ movp(FieldOperand(rdx, FixedArray::kMapOffset), rcx); |
| 4868 | __ movp(FieldOperand(rdx, FixedArray::kLengthOffset), rdi); |
| 4869 | { |
| 4870 | Label loop, done_loop; |
| 4871 | __ Set(rcx, 0); |
| 4872 | __ bind(&loop); |
| 4873 | __ cmpl(rcx, rax); |
| 4874 | __ j(equal, &done_loop, Label::kNear); |
| 4875 | __ movp(kScratchRegister, Operand(rbx, 0 * kPointerSize)); |
| 4876 | __ movp( |
| 4877 | FieldOperand(rdx, rcx, times_pointer_size, FixedArray::kHeaderSize), |
| 4878 | kScratchRegister); |
| 4879 | __ subp(rbx, Immediate(1 * kPointerSize)); |
| 4880 | __ addl(rcx, Immediate(1)); |
| 4881 | __ jmp(&loop); |
| 4882 | __ bind(&done_loop); |
| 4883 | } |
| 4884 | |
| 4885 | // Setup the strict arguments object in rax. |
| 4886 | __ leap(rax, |
| 4887 | Operand(rdx, rax, times_pointer_size, FixedArray::kHeaderSize)); |
| 4888 | __ LoadNativeContextSlot(Context::STRICT_ARGUMENTS_MAP_INDEX, rcx); |
| 4889 | __ movp(FieldOperand(rax, JSStrictArgumentsObject::kMapOffset), rcx); |
| 4890 | __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex); |
| 4891 | __ movp(FieldOperand(rax, JSStrictArgumentsObject::kPropertiesOffset), rcx); |
| 4892 | __ movp(FieldOperand(rax, JSStrictArgumentsObject::kElementsOffset), rdx); |
| 4893 | __ movp(FieldOperand(rax, JSStrictArgumentsObject::kLengthOffset), rdi); |
| 4894 | STATIC_ASSERT(JSStrictArgumentsObject::kSize == 4 * kPointerSize); |
| 4895 | __ Ret(); |
| 4896 | |
| 4897 | // Fall back to %AllocateInNewSpace. |
| 4898 | __ bind(&allocate); |
| 4899 | { |
| 4900 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 4901 | __ Integer32ToSmi(rax, rax); |
| 4902 | __ Integer32ToSmi(rcx, rcx); |
| 4903 | __ Push(rax); |
| 4904 | __ Push(rbx); |
| 4905 | __ Push(rcx); |
| 4906 | __ CallRuntime(Runtime::kAllocateInNewSpace); |
| 4907 | __ movp(rdx, rax); |
| 4908 | __ Pop(rbx); |
| 4909 | __ Pop(rax); |
| 4910 | __ SmiToInteger32(rax, rax); |
| 4911 | } |
| 4912 | __ jmp(&done_allocate); |
| 4913 | } |
| 4914 | |
| 4915 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4916 | void LoadGlobalViaContextStub::Generate(MacroAssembler* masm) { |
| 4917 | Register context_reg = rsi; |
| 4918 | Register slot_reg = rbx; |
| 4919 | Register result_reg = rax; |
| 4920 | Label slow_case; |
| 4921 | |
| 4922 | // Go up context chain to the script context. |
| 4923 | for (int i = 0; i < depth(); ++i) { |
| 4924 | __ movp(rdi, ContextOperand(context_reg, Context::PREVIOUS_INDEX)); |
| 4925 | context_reg = rdi; |
| 4926 | } |
| 4927 | |
| 4928 | // Load the PropertyCell value at the specified slot. |
| 4929 | __ movp(result_reg, ContextOperand(context_reg, slot_reg)); |
| 4930 | __ movp(result_reg, FieldOperand(result_reg, PropertyCell::kValueOffset)); |
| 4931 | |
| 4932 | // Check that value is not the_hole. |
| 4933 | __ CompareRoot(result_reg, Heap::kTheHoleValueRootIndex); |
| 4934 | __ j(equal, &slow_case, Label::kNear); |
| 4935 | __ Ret(); |
| 4936 | |
| 4937 | // Fallback to the runtime. |
| 4938 | __ bind(&slow_case); |
| 4939 | __ Integer32ToSmi(slot_reg, slot_reg); |
| 4940 | __ PopReturnAddressTo(kScratchRegister); |
| 4941 | __ Push(slot_reg); |
| 4942 | __ Push(kScratchRegister); |
| 4943 | __ TailCallRuntime(Runtime::kLoadGlobalViaContext); |
| 4944 | } |
| 4945 | |
| 4946 | |
| 4947 | void StoreGlobalViaContextStub::Generate(MacroAssembler* masm) { |
| 4948 | Register context_reg = rsi; |
| 4949 | Register slot_reg = rbx; |
| 4950 | Register value_reg = rax; |
| 4951 | Register cell_reg = r8; |
| 4952 | Register cell_details_reg = rdx; |
| 4953 | Register cell_value_reg = r9; |
| 4954 | Label fast_heapobject_case, fast_smi_case, slow_case; |
| 4955 | |
| 4956 | if (FLAG_debug_code) { |
| 4957 | __ CompareRoot(value_reg, Heap::kTheHoleValueRootIndex); |
| 4958 | __ Check(not_equal, kUnexpectedValue); |
| 4959 | } |
| 4960 | |
| 4961 | // Go up context chain to the script context. |
| 4962 | for (int i = 0; i < depth(); ++i) { |
| 4963 | __ movp(rdi, ContextOperand(context_reg, Context::PREVIOUS_INDEX)); |
| 4964 | context_reg = rdi; |
| 4965 | } |
| 4966 | |
| 4967 | // Load the PropertyCell at the specified slot. |
| 4968 | __ movp(cell_reg, ContextOperand(context_reg, slot_reg)); |
| 4969 | |
| 4970 | // Load PropertyDetails for the cell (actually only the cell_type, kind and |
| 4971 | // READ_ONLY bit of attributes). |
| 4972 | __ SmiToInteger32(cell_details_reg, |
| 4973 | FieldOperand(cell_reg, PropertyCell::kDetailsOffset)); |
| 4974 | __ andl(cell_details_reg, |
| 4975 | Immediate(PropertyDetails::PropertyCellTypeField::kMask | |
| 4976 | PropertyDetails::KindField::kMask | |
| 4977 | PropertyDetails::kAttributesReadOnlyMask)); |
| 4978 | |
| 4979 | // Check if PropertyCell holds mutable data. |
| 4980 | Label not_mutable_data; |
| 4981 | __ cmpl(cell_details_reg, |
| 4982 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 4983 | PropertyCellType::kMutable) | |
| 4984 | PropertyDetails::KindField::encode(kData))); |
| 4985 | __ j(not_equal, ¬_mutable_data); |
| 4986 | __ JumpIfSmi(value_reg, &fast_smi_case); |
| 4987 | __ bind(&fast_heapobject_case); |
| 4988 | __ movp(FieldOperand(cell_reg, PropertyCell::kValueOffset), value_reg); |
| 4989 | __ RecordWriteField(cell_reg, PropertyCell::kValueOffset, value_reg, |
| 4990 | cell_value_reg, kDontSaveFPRegs, EMIT_REMEMBERED_SET, |
| 4991 | OMIT_SMI_CHECK); |
| 4992 | // RecordWriteField clobbers the value register, so we need to reload. |
| 4993 | __ movp(value_reg, FieldOperand(cell_reg, PropertyCell::kValueOffset)); |
| 4994 | __ Ret(); |
| 4995 | __ bind(¬_mutable_data); |
| 4996 | |
| 4997 | // Check if PropertyCell value matches the new value (relevant for Constant, |
| 4998 | // ConstantType and Undefined cells). |
| 4999 | Label not_same_value; |
| 5000 | __ movp(cell_value_reg, FieldOperand(cell_reg, PropertyCell::kValueOffset)); |
| 5001 | __ cmpp(cell_value_reg, value_reg); |
| 5002 | __ j(not_equal, ¬_same_value, |
| 5003 | FLAG_debug_code ? Label::kFar : Label::kNear); |
| 5004 | // Make sure the PropertyCell is not marked READ_ONLY. |
| 5005 | __ testl(cell_details_reg, |
| 5006 | Immediate(PropertyDetails::kAttributesReadOnlyMask)); |
| 5007 | __ j(not_zero, &slow_case); |
| 5008 | if (FLAG_debug_code) { |
| 5009 | Label done; |
| 5010 | // This can only be true for Constant, ConstantType and Undefined cells, |
| 5011 | // because we never store the_hole via this stub. |
| 5012 | __ cmpl(cell_details_reg, |
| 5013 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 5014 | PropertyCellType::kConstant) | |
| 5015 | PropertyDetails::KindField::encode(kData))); |
| 5016 | __ j(equal, &done); |
| 5017 | __ cmpl(cell_details_reg, |
| 5018 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 5019 | PropertyCellType::kConstantType) | |
| 5020 | PropertyDetails::KindField::encode(kData))); |
| 5021 | __ j(equal, &done); |
| 5022 | __ cmpl(cell_details_reg, |
| 5023 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 5024 | PropertyCellType::kUndefined) | |
| 5025 | PropertyDetails::KindField::encode(kData))); |
| 5026 | __ Check(equal, kUnexpectedValue); |
| 5027 | __ bind(&done); |
| 5028 | } |
| 5029 | __ Ret(); |
| 5030 | __ bind(¬_same_value); |
| 5031 | |
| 5032 | // Check if PropertyCell contains data with constant type (and is not |
| 5033 | // READ_ONLY). |
| 5034 | __ cmpl(cell_details_reg, |
| 5035 | Immediate(PropertyDetails::PropertyCellTypeField::encode( |
| 5036 | PropertyCellType::kConstantType) | |
| 5037 | PropertyDetails::KindField::encode(kData))); |
| 5038 | __ j(not_equal, &slow_case, Label::kNear); |
| 5039 | |
| 5040 | // Now either both old and new values must be SMIs or both must be heap |
| 5041 | // objects with same map. |
| 5042 | Label value_is_heap_object; |
| 5043 | __ JumpIfNotSmi(value_reg, &value_is_heap_object, Label::kNear); |
| 5044 | __ JumpIfNotSmi(cell_value_reg, &slow_case, Label::kNear); |
| 5045 | // Old and new values are SMIs, no need for a write barrier here. |
| 5046 | __ bind(&fast_smi_case); |
| 5047 | __ movp(FieldOperand(cell_reg, PropertyCell::kValueOffset), value_reg); |
| 5048 | __ Ret(); |
| 5049 | __ bind(&value_is_heap_object); |
| 5050 | __ JumpIfSmi(cell_value_reg, &slow_case, Label::kNear); |
| 5051 | Register cell_value_map_reg = cell_value_reg; |
| 5052 | __ movp(cell_value_map_reg, |
| 5053 | FieldOperand(cell_value_reg, HeapObject::kMapOffset)); |
| 5054 | __ cmpp(cell_value_map_reg, FieldOperand(value_reg, HeapObject::kMapOffset)); |
| 5055 | __ j(equal, &fast_heapobject_case); |
| 5056 | |
| 5057 | // Fallback to the runtime. |
| 5058 | __ bind(&slow_case); |
| 5059 | __ Integer32ToSmi(slot_reg, slot_reg); |
| 5060 | __ PopReturnAddressTo(kScratchRegister); |
| 5061 | __ Push(slot_reg); |
| 5062 | __ Push(value_reg); |
| 5063 | __ Push(kScratchRegister); |
| 5064 | __ TailCallRuntime(is_strict(language_mode()) |
| 5065 | ? Runtime::kStoreGlobalViaContext_Strict |
| 5066 | : Runtime::kStoreGlobalViaContext_Sloppy); |
| 5067 | } |
| 5068 | |
| 5069 | |
| 5070 | static int Offset(ExternalReference ref0, ExternalReference ref1) { |
| 5071 | int64_t offset = (ref0.address() - ref1.address()); |
| 5072 | // Check that fits into int. |
| 5073 | DCHECK(static_cast<int>(offset) == offset); |
| 5074 | return static_cast<int>(offset); |
| 5075 | } |
| 5076 | |
| 5077 | |
| 5078 | // Prepares stack to put arguments (aligns and so on). WIN64 calling |
| 5079 | // convention requires to put the pointer to the return value slot into |
| 5080 | // rcx (rcx must be preserverd until CallApiFunctionAndReturn). Saves |
| 5081 | // context (rsi). Clobbers rax. Allocates arg_stack_space * kPointerSize |
| 5082 | // inside the exit frame (not GCed) accessible via StackSpaceOperand. |
| 5083 | static void PrepareCallApiFunction(MacroAssembler* masm, int arg_stack_space) { |
| 5084 | __ EnterApiExitFrame(arg_stack_space); |
| 5085 | } |
| 5086 | |
| 5087 | |
| 5088 | // Calls an API function. Allocates HandleScope, extracts returned value |
| 5089 | // from handle and propagates exceptions. Clobbers r14, r15, rbx and |
| 5090 | // caller-save registers. Restores context. On return removes |
| 5091 | // stack_space * kPointerSize (GCed). |
| 5092 | static void CallApiFunctionAndReturn(MacroAssembler* masm, |
| 5093 | Register function_address, |
| 5094 | ExternalReference thunk_ref, |
| 5095 | Register thunk_last_arg, int stack_space, |
| 5096 | Operand* stack_space_operand, |
| 5097 | Operand return_value_operand, |
| 5098 | Operand* context_restore_operand) { |
| 5099 | Label prologue; |
| 5100 | Label promote_scheduled_exception; |
| 5101 | Label delete_allocated_handles; |
| 5102 | Label leave_exit_frame; |
| 5103 | Label write_back; |
| 5104 | |
| 5105 | Isolate* isolate = masm->isolate(); |
| 5106 | Factory* factory = isolate->factory(); |
| 5107 | ExternalReference next_address = |
| 5108 | ExternalReference::handle_scope_next_address(isolate); |
| 5109 | const int kNextOffset = 0; |
| 5110 | const int kLimitOffset = Offset( |
| 5111 | ExternalReference::handle_scope_limit_address(isolate), next_address); |
| 5112 | const int kLevelOffset = Offset( |
| 5113 | ExternalReference::handle_scope_level_address(isolate), next_address); |
| 5114 | ExternalReference scheduled_exception_address = |
| 5115 | ExternalReference::scheduled_exception_address(isolate); |
| 5116 | |
| 5117 | DCHECK(rdx.is(function_address) || r8.is(function_address)); |
| 5118 | // Allocate HandleScope in callee-save registers. |
| 5119 | Register prev_next_address_reg = r14; |
| 5120 | Register prev_limit_reg = rbx; |
| 5121 | Register base_reg = r15; |
| 5122 | __ Move(base_reg, next_address); |
| 5123 | __ movp(prev_next_address_reg, Operand(base_reg, kNextOffset)); |
| 5124 | __ movp(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 5125 | __ addl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 5126 | |
| 5127 | if (FLAG_log_timer_events) { |
| 5128 | FrameScope frame(masm, StackFrame::MANUAL); |
| 5129 | __ PushSafepointRegisters(); |
| 5130 | __ PrepareCallCFunction(1); |
| 5131 | __ LoadAddress(arg_reg_1, ExternalReference::isolate_address(isolate)); |
| 5132 | __ CallCFunction(ExternalReference::log_enter_external_function(isolate), |
| 5133 | 1); |
| 5134 | __ PopSafepointRegisters(); |
| 5135 | } |
| 5136 | |
| 5137 | Label profiler_disabled; |
| 5138 | Label end_profiler_check; |
| 5139 | __ Move(rax, ExternalReference::is_profiling_address(isolate)); |
| 5140 | __ cmpb(Operand(rax, 0), Immediate(0)); |
| 5141 | __ j(zero, &profiler_disabled); |
| 5142 | |
| 5143 | // Third parameter is the address of the actual getter function. |
| 5144 | __ Move(thunk_last_arg, function_address); |
| 5145 | __ Move(rax, thunk_ref); |
| 5146 | __ jmp(&end_profiler_check); |
| 5147 | |
| 5148 | __ bind(&profiler_disabled); |
| 5149 | // Call the api function! |
| 5150 | __ Move(rax, function_address); |
| 5151 | |
| 5152 | __ bind(&end_profiler_check); |
| 5153 | |
| 5154 | // Call the api function! |
| 5155 | __ call(rax); |
| 5156 | |
| 5157 | if (FLAG_log_timer_events) { |
| 5158 | FrameScope frame(masm, StackFrame::MANUAL); |
| 5159 | __ PushSafepointRegisters(); |
| 5160 | __ PrepareCallCFunction(1); |
| 5161 | __ LoadAddress(arg_reg_1, ExternalReference::isolate_address(isolate)); |
| 5162 | __ CallCFunction(ExternalReference::log_leave_external_function(isolate), |
| 5163 | 1); |
| 5164 | __ PopSafepointRegisters(); |
| 5165 | } |
| 5166 | |
| 5167 | // Load the value from ReturnValue |
| 5168 | __ movp(rax, return_value_operand); |
| 5169 | __ bind(&prologue); |
| 5170 | |
| 5171 | // No more valid handles (the result handle was the last one). Restore |
| 5172 | // previous handle scope. |
| 5173 | __ subl(Operand(base_reg, kLevelOffset), Immediate(1)); |
| 5174 | __ movp(Operand(base_reg, kNextOffset), prev_next_address_reg); |
| 5175 | __ cmpp(prev_limit_reg, Operand(base_reg, kLimitOffset)); |
| 5176 | __ j(not_equal, &delete_allocated_handles); |
| 5177 | |
| 5178 | // Leave the API exit frame. |
| 5179 | __ bind(&leave_exit_frame); |
| 5180 | bool restore_context = context_restore_operand != NULL; |
| 5181 | if (restore_context) { |
| 5182 | __ movp(rsi, *context_restore_operand); |
| 5183 | } |
| 5184 | if (stack_space_operand != nullptr) { |
| 5185 | __ movp(rbx, *stack_space_operand); |
| 5186 | } |
| 5187 | __ LeaveApiExitFrame(!restore_context); |
| 5188 | |
| 5189 | // Check if the function scheduled an exception. |
| 5190 | __ Move(rdi, scheduled_exception_address); |
| 5191 | __ Cmp(Operand(rdi, 0), factory->the_hole_value()); |
| 5192 | __ j(not_equal, &promote_scheduled_exception); |
| 5193 | |
| 5194 | #if DEBUG |
| 5195 | // Check if the function returned a valid JavaScript value. |
| 5196 | Label ok; |
| 5197 | Register return_value = rax; |
| 5198 | Register map = rcx; |
| 5199 | |
| 5200 | __ JumpIfSmi(return_value, &ok, Label::kNear); |
| 5201 | __ movp(map, FieldOperand(return_value, HeapObject::kMapOffset)); |
| 5202 | |
| 5203 | __ CmpInstanceType(map, LAST_NAME_TYPE); |
| 5204 | __ j(below_equal, &ok, Label::kNear); |
| 5205 | |
| 5206 | __ CmpInstanceType(map, FIRST_JS_RECEIVER_TYPE); |
| 5207 | __ j(above_equal, &ok, Label::kNear); |
| 5208 | |
| 5209 | __ CompareRoot(map, Heap::kHeapNumberMapRootIndex); |
| 5210 | __ j(equal, &ok, Label::kNear); |
| 5211 | |
| 5212 | __ CompareRoot(return_value, Heap::kUndefinedValueRootIndex); |
| 5213 | __ j(equal, &ok, Label::kNear); |
| 5214 | |
| 5215 | __ CompareRoot(return_value, Heap::kTrueValueRootIndex); |
| 5216 | __ j(equal, &ok, Label::kNear); |
| 5217 | |
| 5218 | __ CompareRoot(return_value, Heap::kFalseValueRootIndex); |
| 5219 | __ j(equal, &ok, Label::kNear); |
| 5220 | |
| 5221 | __ CompareRoot(return_value, Heap::kNullValueRootIndex); |
| 5222 | __ j(equal, &ok, Label::kNear); |
| 5223 | |
| 5224 | __ Abort(kAPICallReturnedInvalidObject); |
| 5225 | |
| 5226 | __ bind(&ok); |
| 5227 | #endif |
| 5228 | |
| 5229 | if (stack_space_operand != nullptr) { |
| 5230 | DCHECK_EQ(stack_space, 0); |
| 5231 | __ PopReturnAddressTo(rcx); |
| 5232 | __ addq(rsp, rbx); |
| 5233 | __ jmp(rcx); |
| 5234 | } else { |
| 5235 | __ ret(stack_space * kPointerSize); |
| 5236 | } |
| 5237 | |
| 5238 | // Re-throw by promoting a scheduled exception. |
| 5239 | __ bind(&promote_scheduled_exception); |
| 5240 | __ TailCallRuntime(Runtime::kPromoteScheduledException); |
| 5241 | |
| 5242 | // HandleScope limit has changed. Delete allocated extensions. |
| 5243 | __ bind(&delete_allocated_handles); |
| 5244 | __ movp(Operand(base_reg, kLimitOffset), prev_limit_reg); |
| 5245 | __ movp(prev_limit_reg, rax); |
| 5246 | __ LoadAddress(arg_reg_1, ExternalReference::isolate_address(isolate)); |
| 5247 | __ LoadAddress(rax, |
| 5248 | ExternalReference::delete_handle_scope_extensions(isolate)); |
| 5249 | __ call(rax); |
| 5250 | __ movp(rax, prev_limit_reg); |
| 5251 | __ jmp(&leave_exit_frame); |
| 5252 | } |
| 5253 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5254 | void CallApiCallbackStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5255 | // ----------- S t a t e ------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5256 | // -- rdi : callee |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5257 | // -- rbx : call_data |
| 5258 | // -- rcx : holder |
| 5259 | // -- rdx : api_function_address |
| 5260 | // -- rsi : context |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5261 | // -- rax : number of arguments if argc is a register |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5262 | // -- rsp[0] : return address |
| 5263 | // -- rsp[8] : last argument |
| 5264 | // -- ... |
| 5265 | // -- rsp[argc * 8] : first argument |
| 5266 | // -- rsp[(argc + 1) * 8] : receiver |
| 5267 | // ----------------------------------- |
| 5268 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5269 | Register callee = rdi; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5270 | Register call_data = rbx; |
| 5271 | Register holder = rcx; |
| 5272 | Register api_function_address = rdx; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5273 | Register context = rsi; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5274 | Register return_address = r8; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5275 | |
| 5276 | typedef FunctionCallbackArguments FCA; |
| 5277 | |
| 5278 | STATIC_ASSERT(FCA::kContextSaveIndex == 6); |
| 5279 | STATIC_ASSERT(FCA::kCalleeIndex == 5); |
| 5280 | STATIC_ASSERT(FCA::kDataIndex == 4); |
| 5281 | STATIC_ASSERT(FCA::kReturnValueOffset == 3); |
| 5282 | STATIC_ASSERT(FCA::kReturnValueDefaultValueIndex == 2); |
| 5283 | STATIC_ASSERT(FCA::kIsolateIndex == 1); |
| 5284 | STATIC_ASSERT(FCA::kHolderIndex == 0); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 5285 | STATIC_ASSERT(FCA::kNewTargetIndex == 7); |
| 5286 | STATIC_ASSERT(FCA::kArgsLength == 8); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5287 | |
| 5288 | __ PopReturnAddressTo(return_address); |
| 5289 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 5290 | // new target |
| 5291 | __ PushRoot(Heap::kUndefinedValueRootIndex); |
| 5292 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5293 | // context save |
| 5294 | __ Push(context); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5295 | |
| 5296 | // callee |
| 5297 | __ Push(callee); |
| 5298 | |
| 5299 | // call data |
| 5300 | __ Push(call_data); |
| 5301 | Register scratch = call_data; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5302 | if (!this->call_data_undefined()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5303 | __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 5304 | } |
| 5305 | // return value |
| 5306 | __ Push(scratch); |
| 5307 | // return value default |
| 5308 | __ Push(scratch); |
| 5309 | // isolate |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5310 | __ Move(scratch, ExternalReference::isolate_address(masm->isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5311 | __ Push(scratch); |
| 5312 | // holder |
| 5313 | __ Push(holder); |
| 5314 | |
| 5315 | __ movp(scratch, rsp); |
| 5316 | // Push return address back on stack. |
| 5317 | __ PushReturnAddressFrom(return_address); |
| 5318 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5319 | if (!this->is_lazy()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5320 | // load context from callee |
| 5321 | __ movp(context, FieldOperand(callee, JSFunction::kContextOffset)); |
| 5322 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5323 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5324 | // Allocate the v8::Arguments structure in the arguments' space since |
| 5325 | // it's not controlled by GC. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 5326 | const int kApiStackSpace = 3; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5327 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5328 | PrepareCallApiFunction(masm, kApiStackSpace); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5329 | |
| 5330 | // FunctionCallbackInfo::implicit_args_. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5331 | int argc = this->argc(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5332 | __ movp(StackSpaceOperand(0), scratch); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5333 | __ addp(scratch, Immediate((argc + FCA::kArgsLength - 1) * kPointerSize)); |
| 5334 | // FunctionCallbackInfo::values_. |
| 5335 | __ movp(StackSpaceOperand(1), scratch); |
| 5336 | // FunctionCallbackInfo::length_. |
| 5337 | __ Set(StackSpaceOperand(2), argc); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5338 | |
| 5339 | #if defined(__MINGW64__) || defined(_WIN64) |
| 5340 | Register arguments_arg = rcx; |
| 5341 | Register callback_arg = rdx; |
| 5342 | #else |
| 5343 | Register arguments_arg = rdi; |
| 5344 | Register callback_arg = rsi; |
| 5345 | #endif |
| 5346 | |
| 5347 | // It's okay if api_function_address == callback_arg |
| 5348 | // but not arguments_arg |
| 5349 | DCHECK(!api_function_address.is(arguments_arg)); |
| 5350 | |
| 5351 | // v8::InvocationCallback's argument. |
| 5352 | __ leap(arguments_arg, StackSpaceOperand(0)); |
| 5353 | |
| 5354 | ExternalReference thunk_ref = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5355 | ExternalReference::invoke_function_callback(masm->isolate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5356 | |
| 5357 | // Accessor for FunctionCallbackInfo and first js arg. |
| 5358 | StackArgumentsAccessor args_from_rbp(rbp, FCA::kArgsLength + 1, |
| 5359 | ARGUMENTS_DONT_CONTAIN_RECEIVER); |
| 5360 | Operand context_restore_operand = args_from_rbp.GetArgumentOperand( |
| 5361 | FCA::kArgsLength - FCA::kContextSaveIndex); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 5362 | Operand length_operand = StackSpaceOperand(2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5363 | Operand return_value_operand = args_from_rbp.GetArgumentOperand( |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5364 | this->is_store() ? 0 : FCA::kArgsLength - FCA::kReturnValueOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5365 | int stack_space = 0; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 5366 | Operand* stack_space_operand = &length_operand; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5367 | stack_space = argc + FCA::kArgsLength + 1; |
| 5368 | stack_space_operand = nullptr; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5369 | CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, callback_arg, |
| 5370 | stack_space, stack_space_operand, |
| 5371 | return_value_operand, &context_restore_operand); |
| 5372 | } |
| 5373 | |
| 5374 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5375 | void CallApiGetterStub::Generate(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5376 | #if defined(__MINGW64__) || defined(_WIN64) |
| 5377 | Register getter_arg = r8; |
| 5378 | Register accessor_info_arg = rdx; |
| 5379 | Register name_arg = rcx; |
| 5380 | #else |
| 5381 | Register getter_arg = rdx; |
| 5382 | Register accessor_info_arg = rsi; |
| 5383 | Register name_arg = rdi; |
| 5384 | #endif |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 5385 | Register api_function_address = r8; |
| 5386 | Register receiver = ApiGetterDescriptor::ReceiverRegister(); |
| 5387 | Register holder = ApiGetterDescriptor::HolderRegister(); |
| 5388 | Register callback = ApiGetterDescriptor::CallbackRegister(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5389 | Register scratch = rax; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 5390 | DCHECK(!AreAliased(receiver, holder, callback, scratch)); |
| 5391 | |
| 5392 | // Build v8::PropertyCallbackInfo::args_ array on the stack and push property |
| 5393 | // name below the exit frame to make GC aware of them. |
| 5394 | STATIC_ASSERT(PropertyCallbackArguments::kShouldThrowOnErrorIndex == 0); |
| 5395 | STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == 1); |
| 5396 | STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == 2); |
| 5397 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == 3); |
| 5398 | STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == 4); |
| 5399 | STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == 5); |
| 5400 | STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 6); |
| 5401 | STATIC_ASSERT(PropertyCallbackArguments::kArgsLength == 7); |
| 5402 | |
| 5403 | // Insert additional parameters into the stack frame above return address. |
| 5404 | __ PopReturnAddressTo(scratch); |
| 5405 | __ Push(receiver); |
| 5406 | __ Push(FieldOperand(callback, AccessorInfo::kDataOffset)); |
| 5407 | __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); |
| 5408 | __ Push(kScratchRegister); // return value |
| 5409 | __ Push(kScratchRegister); // return value default |
| 5410 | __ PushAddress(ExternalReference::isolate_address(isolate())); |
| 5411 | __ Push(holder); |
| 5412 | __ Push(Smi::FromInt(0)); // should_throw_on_error -> false |
| 5413 | __ Push(FieldOperand(callback, AccessorInfo::kNameOffset)); |
| 5414 | __ PushReturnAddressFrom(scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5415 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5416 | // v8::PropertyCallbackInfo::args_ array and name handle. |
| 5417 | const int kStackUnwindSpace = PropertyCallbackArguments::kArgsLength + 1; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5418 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5419 | // Allocate v8::PropertyCallbackInfo in non-GCed stack space. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5420 | const int kArgStackSpace = 1; |
| 5421 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5422 | // Load address of v8::PropertyAccessorInfo::args_ array. |
| 5423 | __ leap(scratch, Operand(rsp, 2 * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5424 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5425 | PrepareCallApiFunction(masm, kArgStackSpace); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5426 | // Create v8::PropertyCallbackInfo object on the stack and initialize |
| 5427 | // it's args_ field. |
| 5428 | Operand info_object = StackSpaceOperand(0); |
| 5429 | __ movp(info_object, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5430 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5431 | __ leap(name_arg, Operand(scratch, -kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5432 | // The context register (rsi) has been saved in PrepareCallApiFunction and |
| 5433 | // could be used to pass arguments. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5434 | __ leap(accessor_info_arg, info_object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5435 | |
| 5436 | ExternalReference thunk_ref = |
| 5437 | ExternalReference::invoke_accessor_getter_callback(isolate()); |
| 5438 | |
| 5439 | // It's okay if api_function_address == getter_arg |
| 5440 | // but not accessor_info_arg or name_arg |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame^] | 5441 | DCHECK(!api_function_address.is(accessor_info_arg)); |
| 5442 | DCHECK(!api_function_address.is(name_arg)); |
| 5443 | __ movp(scratch, FieldOperand(callback, AccessorInfo::kJsGetterOffset)); |
| 5444 | __ movp(api_function_address, |
| 5445 | FieldOperand(scratch, Foreign::kForeignAddressOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5446 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5447 | // +3 is to skip prolog, return address and name handle. |
| 5448 | Operand return_value_operand( |
| 5449 | rbp, (PropertyCallbackArguments::kReturnValueOffset + 3) * kPointerSize); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5450 | CallApiFunctionAndReturn(masm, api_function_address, thunk_ref, getter_arg, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 5451 | kStackUnwindSpace, nullptr, return_value_operand, |
| 5452 | NULL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5453 | } |
| 5454 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 5455 | #undef __ |
| 5456 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5457 | } // namespace internal |
| 5458 | } // namespace v8 |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 5459 | |
| 5460 | #endif // V8_TARGET_ARCH_X64 |