Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #if V8_TARGET_ARCH_MIPS |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include "src/codegen.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 8 | #include "src/debug/debug.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #include "src/deoptimizer.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 10 | #include "src/full-codegen/full-codegen.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 11 | #include "src/runtime/runtime.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 12 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | |
| 17 | |
| 18 | #define __ ACCESS_MASM(masm) |
| 19 | |
| 20 | |
| 21 | void Builtins::Generate_Adaptor(MacroAssembler* masm, |
| 22 | CFunctionId id, |
| 23 | BuiltinExtraArguments extra_args) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 24 | // ----------- S t a t e ------------- |
| 25 | // -- a0 : number of arguments excluding receiver |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 26 | // -- a1 : target |
| 27 | // -- a3 : new.target |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 28 | // -- sp[0] : last argument |
| 29 | // -- ... |
| 30 | // -- sp[4 * (argc - 1)] : first argument |
| 31 | // -- sp[4 * agrc] : receiver |
| 32 | // ----------------------------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 33 | __ AssertFunction(a1); |
| 34 | |
| 35 | // Make sure we operate in the context of the called function (for example |
| 36 | // ConstructStubs implemented in C++ will be run in the context of the caller |
| 37 | // instead of the callee, due to the way that [[Construct]] is defined for |
| 38 | // ordinary functions). |
| 39 | __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 40 | |
| 41 | // Insert extra arguments. |
| 42 | int num_extra_args = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 43 | switch (extra_args) { |
| 44 | case BuiltinExtraArguments::kTarget: |
| 45 | __ Push(a1); |
| 46 | ++num_extra_args; |
| 47 | break; |
| 48 | case BuiltinExtraArguments::kNewTarget: |
| 49 | __ Push(a3); |
| 50 | ++num_extra_args; |
| 51 | break; |
| 52 | case BuiltinExtraArguments::kTargetAndNewTarget: |
| 53 | __ Push(a1, a3); |
| 54 | num_extra_args += 2; |
| 55 | break; |
| 56 | case BuiltinExtraArguments::kNone: |
| 57 | break; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 58 | } |
| 59 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 60 | // JumpToExternalReference expects a0 to contain the number of arguments |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 61 | // including the receiver and the extra arguments. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 62 | __ Addu(a0, a0, num_extra_args + 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 63 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 64 | __ JumpToExternalReference(ExternalReference(id, masm->isolate())); |
| 65 | } |
| 66 | |
| 67 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 68 | // Load the built-in InternalArray function from the current context. |
| 69 | static void GenerateLoadInternalArrayFunction(MacroAssembler* masm, |
| 70 | Register result) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 71 | // Load the InternalArray function from the native context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 72 | __ LoadNativeContextSlot(Context::INTERNAL_ARRAY_FUNCTION_INDEX, result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 76 | // Load the built-in Array function from the current context. |
| 77 | static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 78 | // Load the Array function from the native context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 79 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, result); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 83 | void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) { |
| 84 | // ----------- S t a t e ------------- |
| 85 | // -- a0 : number of arguments |
| 86 | // -- ra : return address |
| 87 | // -- sp[...]: constructor arguments |
| 88 | // ----------------------------------- |
| 89 | Label generic_array_code, one_or_more_arguments, two_or_more_arguments; |
| 90 | |
| 91 | // Get the InternalArray function. |
| 92 | GenerateLoadInternalArrayFunction(masm, a1); |
| 93 | |
| 94 | if (FLAG_debug_code) { |
| 95 | // Initial map for the builtin InternalArray functions should be maps. |
| 96 | __ lw(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 97 | __ SmiTst(a2, t0); |
| 98 | __ Assert(ne, kUnexpectedInitialMapForInternalArrayFunction, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 99 | t0, Operand(zero_reg)); |
| 100 | __ GetObjectType(a2, a3, t0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 101 | __ Assert(eq, kUnexpectedInitialMapForInternalArrayFunction, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 102 | t0, Operand(MAP_TYPE)); |
| 103 | } |
| 104 | |
| 105 | // Run the native code for the InternalArray function called as a normal |
| 106 | // function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 107 | // Tail call a stub. |
| 108 | InternalArrayConstructorStub stub(masm->isolate()); |
| 109 | __ TailCallStub(&stub); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | |
| 113 | void Builtins::Generate_ArrayCode(MacroAssembler* masm) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 114 | // ----------- S t a t e ------------- |
| 115 | // -- a0 : number of arguments |
| 116 | // -- ra : return address |
| 117 | // -- sp[...]: constructor arguments |
| 118 | // ----------------------------------- |
| 119 | Label generic_array_code; |
| 120 | |
| 121 | // Get the Array function. |
| 122 | GenerateLoadArrayFunction(masm, a1); |
| 123 | |
| 124 | if (FLAG_debug_code) { |
| 125 | // Initial map for the builtin Array functions should be maps. |
| 126 | __ lw(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 127 | __ SmiTst(a2, t0); |
| 128 | __ Assert(ne, kUnexpectedInitialMapForArrayFunction1, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 129 | t0, Operand(zero_reg)); |
| 130 | __ GetObjectType(a2, a3, t0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 131 | __ Assert(eq, kUnexpectedInitialMapForArrayFunction2, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 132 | t0, Operand(MAP_TYPE)); |
| 133 | } |
| 134 | |
| 135 | // Run the native code for the Array function called as a normal function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 136 | // Tail call a stub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 137 | __ mov(a3, a1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 138 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| 139 | ArrayConstructorStub stub(masm->isolate()); |
| 140 | __ TailCallStub(&stub); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 141 | } |
| 142 | |
| 143 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 144 | // static |
| 145 | void Builtins::Generate_NumberConstructor(MacroAssembler* masm) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 146 | // ----------- S t a t e ------------- |
| 147 | // -- a0 : number of arguments |
| 148 | // -- a1 : constructor function |
| 149 | // -- ra : return address |
| 150 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) |
| 151 | // -- sp[argc * 4] : receiver |
| 152 | // ----------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 153 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 154 | // 1. Load the first argument into a0 and get rid of the rest (including the |
| 155 | // receiver). |
| 156 | Label no_arguments; |
| 157 | { |
| 158 | __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); |
| 159 | __ Subu(a0, a0, Operand(1)); |
| 160 | __ sll(a0, a0, kPointerSizeLog2); |
| 161 | __ Addu(sp, a0, sp); |
| 162 | __ lw(a0, MemOperand(sp)); |
| 163 | __ Drop(2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 164 | } |
| 165 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 166 | // 2a. Convert first argument to number. |
| 167 | ToNumberStub stub(masm->isolate()); |
| 168 | __ TailCallStub(&stub); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 169 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 170 | // 2b. No arguments, return +0. |
| 171 | __ bind(&no_arguments); |
| 172 | __ Move(v0, Smi::FromInt(0)); |
| 173 | __ DropAndRet(1); |
| 174 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 175 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 176 | |
| 177 | // static |
| 178 | void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 179 | // ----------- S t a t e ------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 180 | // -- a0 : number of arguments |
| 181 | // -- a1 : constructor function |
| 182 | // -- a3 : new target |
| 183 | // -- ra : return address |
| 184 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) |
| 185 | // -- sp[argc * 4] : receiver |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 186 | // ----------------------------------- |
| 187 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 188 | // 1. Make sure we operate in the context of the called function. |
| 189 | __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 190 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 191 | // 2. Load the first argument into a0 and get rid of the rest (including the |
| 192 | // receiver). |
| 193 | { |
| 194 | Label no_arguments, done; |
| 195 | __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); |
| 196 | __ Subu(a0, a0, Operand(1)); |
| 197 | __ sll(a0, a0, kPointerSizeLog2); |
| 198 | __ Addu(sp, a0, sp); |
| 199 | __ lw(a0, MemOperand(sp)); |
| 200 | __ Drop(2); |
| 201 | __ jmp(&done); |
| 202 | __ bind(&no_arguments); |
| 203 | __ Move(a0, Smi::FromInt(0)); |
| 204 | __ Drop(1); |
| 205 | __ bind(&done); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 206 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 207 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 208 | // 3. Make sure a0 is a number. |
| 209 | { |
| 210 | Label done_convert; |
| 211 | __ JumpIfSmi(a0, &done_convert); |
| 212 | __ GetObjectType(a0, a2, a2); |
| 213 | __ Branch(&done_convert, eq, a2, Operand(HEAP_NUMBER_TYPE)); |
| 214 | { |
| 215 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 216 | __ Push(a1, a3); |
| 217 | ToNumberStub stub(masm->isolate()); |
| 218 | __ CallStub(&stub); |
| 219 | __ Move(a0, v0); |
| 220 | __ Pop(a1, a3); |
| 221 | } |
| 222 | __ bind(&done_convert); |
| 223 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 224 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 225 | // 4. Check if new target and constructor differ. |
| 226 | Label new_object; |
| 227 | __ Branch(&new_object, ne, a1, Operand(a3)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 228 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 229 | // 5. Allocate a JSValue wrapper for the number. |
| 230 | __ AllocateJSValue(v0, a1, a0, a2, t0, &new_object); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 231 | __ Ret(); |
| 232 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 233 | // 6. Fallback to the runtime to create new object. |
| 234 | __ bind(&new_object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 235 | { |
| 236 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 237 | __ Push(a0, a1, a3); // first argument, constructor, new target |
| 238 | __ CallRuntime(Runtime::kNewObject); |
| 239 | __ Pop(a0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 240 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 241 | __ Ret(USE_DELAY_SLOT); |
| 242 | __ sw(a0, FieldMemOperand(v0, JSValue::kValueOffset)); // In delay slot |
| 243 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 244 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 245 | |
| 246 | // static |
| 247 | void Builtins::Generate_StringConstructor(MacroAssembler* masm) { |
| 248 | // ----------- S t a t e ------------- |
| 249 | // -- a0 : number of arguments |
| 250 | // -- a1 : constructor function |
| 251 | // -- ra : return address |
| 252 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) |
| 253 | // -- sp[argc * 4] : receiver |
| 254 | // ----------------------------------- |
| 255 | |
| 256 | // 1. Load the first argument into a0 and get rid of the rest (including the |
| 257 | // receiver). |
| 258 | Label no_arguments; |
| 259 | { |
| 260 | __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); |
| 261 | __ Subu(a0, a0, Operand(1)); |
| 262 | __ sll(a0, a0, kPointerSizeLog2); |
| 263 | __ Addu(sp, a0, sp); |
| 264 | __ lw(a0, MemOperand(sp)); |
| 265 | __ Drop(2); |
| 266 | } |
| 267 | |
| 268 | // 2a. At least one argument, return a0 if it's a string, otherwise |
| 269 | // dispatch to appropriate conversion. |
| 270 | Label to_string, symbol_descriptive_string; |
| 271 | { |
| 272 | __ JumpIfSmi(a0, &to_string); |
| 273 | __ GetObjectType(a0, a1, a1); |
| 274 | STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE); |
| 275 | __ Subu(a1, a1, Operand(FIRST_NONSTRING_TYPE)); |
| 276 | __ Branch(&symbol_descriptive_string, eq, a1, Operand(zero_reg)); |
| 277 | __ Branch(&to_string, gt, a1, Operand(zero_reg)); |
| 278 | __ Ret(USE_DELAY_SLOT); |
| 279 | __ mov(v0, a0); |
| 280 | } |
| 281 | |
| 282 | // 2b. No arguments, return the empty string (and pop the receiver). |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 283 | __ bind(&no_arguments); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 284 | { |
| 285 | __ LoadRoot(v0, Heap::kempty_stringRootIndex); |
| 286 | __ DropAndRet(1); |
| 287 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 288 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 289 | // 3a. Convert a0 to a string. |
| 290 | __ bind(&to_string); |
| 291 | { |
| 292 | ToStringStub stub(masm->isolate()); |
| 293 | __ TailCallStub(&stub); |
| 294 | } |
| 295 | |
| 296 | // 3b. Convert symbol in a0 to a string. |
| 297 | __ bind(&symbol_descriptive_string); |
| 298 | { |
| 299 | __ Push(a0); |
| 300 | __ TailCallRuntime(Runtime::kSymbolDescriptiveString); |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | |
| 305 | // static |
| 306 | void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) { |
| 307 | // ----------- S t a t e ------------- |
| 308 | // -- a0 : number of arguments |
| 309 | // -- a1 : constructor function |
| 310 | // -- a3 : new target |
| 311 | // -- ra : return address |
| 312 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) |
| 313 | // -- sp[argc * 4] : receiver |
| 314 | // ----------------------------------- |
| 315 | |
| 316 | // 1. Make sure we operate in the context of the called function. |
| 317 | __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 318 | |
| 319 | // 2. Load the first argument into a0 and get rid of the rest (including the |
| 320 | // receiver). |
| 321 | { |
| 322 | Label no_arguments, done; |
| 323 | __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); |
| 324 | __ Subu(a0, a0, Operand(1)); |
| 325 | __ sll(a0, a0, kPointerSizeLog2); |
| 326 | __ Addu(sp, a0, sp); |
| 327 | __ lw(a0, MemOperand(sp)); |
| 328 | __ Drop(2); |
| 329 | __ jmp(&done); |
| 330 | __ bind(&no_arguments); |
| 331 | __ LoadRoot(a0, Heap::kempty_stringRootIndex); |
| 332 | __ Drop(1); |
| 333 | __ bind(&done); |
| 334 | } |
| 335 | |
| 336 | // 3. Make sure a0 is a string. |
| 337 | { |
| 338 | Label convert, done_convert; |
| 339 | __ JumpIfSmi(a0, &convert); |
| 340 | __ GetObjectType(a0, a2, a2); |
| 341 | __ And(t0, a2, Operand(kIsNotStringMask)); |
| 342 | __ Branch(&done_convert, eq, t0, Operand(zero_reg)); |
| 343 | __ bind(&convert); |
| 344 | { |
| 345 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 346 | ToStringStub stub(masm->isolate()); |
| 347 | __ Push(a1, a3); |
| 348 | __ CallStub(&stub); |
| 349 | __ Move(a0, v0); |
| 350 | __ Pop(a1, a3); |
| 351 | } |
| 352 | __ bind(&done_convert); |
| 353 | } |
| 354 | |
| 355 | // 4. Check if new target and constructor differ. |
| 356 | Label new_object; |
| 357 | __ Branch(&new_object, ne, a1, Operand(a3)); |
| 358 | |
| 359 | // 5. Allocate a JSValue wrapper for the string. |
| 360 | __ AllocateJSValue(v0, a1, a0, a2, t0, &new_object); |
| 361 | __ Ret(); |
| 362 | |
| 363 | // 6. Fallback to the runtime to create new object. |
| 364 | __ bind(&new_object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 365 | { |
| 366 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 367 | __ Push(a0, a1, a3); // first argument, constructor, new target |
| 368 | __ CallRuntime(Runtime::kNewObject); |
| 369 | __ Pop(a0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 370 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 371 | __ Ret(USE_DELAY_SLOT); |
| 372 | __ sw(a0, FieldMemOperand(v0, JSValue::kValueOffset)); // In delay slot |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 373 | } |
| 374 | |
| 375 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 376 | static void CallRuntimePassFunction( |
| 377 | MacroAssembler* masm, Runtime::FunctionId function_id) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 378 | // ----------- S t a t e ------------- |
| 379 | // -- a1 : target function (preserved for callee) |
| 380 | // -- a3 : new target (preserved for callee) |
| 381 | // ----------------------------------- |
| 382 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 383 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 384 | // Push a copy of the target function and the new target. |
| 385 | // Push function as parameter to the runtime call. |
| 386 | __ Push(a1, a3, a1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 387 | |
| 388 | __ CallRuntime(function_id, 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 389 | // Restore target function and new target. |
| 390 | __ Pop(a1, a3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | |
| 394 | static void GenerateTailCallToSharedCode(MacroAssembler* masm) { |
| 395 | __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 396 | __ lw(a2, FieldMemOperand(a2, SharedFunctionInfo::kCodeOffset)); |
| 397 | __ Addu(at, a2, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 398 | __ Jump(at); |
| 399 | } |
| 400 | |
| 401 | |
| 402 | static void GenerateTailCallToReturnedCode(MacroAssembler* masm) { |
| 403 | __ Addu(at, v0, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 404 | __ Jump(at); |
| 405 | } |
| 406 | |
| 407 | |
| 408 | void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) { |
| 409 | // Checking whether the queued function is ready for install is optional, |
| 410 | // since we come across interrupts and stack checks elsewhere. However, |
| 411 | // not checking may delay installing ready functions, and always checking |
| 412 | // would be quite expensive. A good compromise is to first check against |
| 413 | // stack limit as a cue for an interrupt signal. |
| 414 | Label ok; |
| 415 | __ LoadRoot(t0, Heap::kStackLimitRootIndex); |
| 416 | __ Branch(&ok, hs, sp, Operand(t0)); |
| 417 | |
| 418 | CallRuntimePassFunction(masm, Runtime::kTryInstallOptimizedCode); |
| 419 | GenerateTailCallToReturnedCode(masm); |
| 420 | |
| 421 | __ bind(&ok); |
| 422 | GenerateTailCallToSharedCode(masm); |
| 423 | } |
| 424 | |
| 425 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 426 | static void Generate_JSConstructStubHelper(MacroAssembler* masm, |
| 427 | bool is_api_function, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 428 | bool create_implicit_receiver) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 429 | // ----------- S t a t e ------------- |
| 430 | // -- a0 : number of arguments |
| 431 | // -- a1 : constructor function |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 432 | // -- a2 : allocation site or undefined |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 433 | // -- a3 : new target |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 434 | // -- ra : return address |
| 435 | // -- sp[...]: constructor arguments |
| 436 | // ----------------------------------- |
| 437 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 438 | Isolate* isolate = masm->isolate(); |
| 439 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 440 | // Enter a construct frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 441 | { |
| 442 | FrameScope scope(masm, StackFrame::CONSTRUCT); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 443 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 444 | // Preserve the incoming parameters on the stack. |
| 445 | __ AssertUndefinedOrAllocationSite(a2, t0); |
| 446 | __ SmiTag(a0); |
| 447 | __ Push(a2, a0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 448 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 449 | if (create_implicit_receiver) { |
| 450 | // Try to allocate the object without transitioning into C code. If any of |
| 451 | // the preconditions is not met, the code bails out to the runtime call. |
| 452 | Label rt_call, allocated; |
| 453 | if (FLAG_inline_new) { |
| 454 | // Verify that the new target is a JSFunction. |
| 455 | __ GetObjectType(a3, t1, t0); |
| 456 | __ Branch(&rt_call, ne, t0, Operand(JS_FUNCTION_TYPE)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 457 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 458 | // Load the initial map and verify that it is in fact a map. |
| 459 | // a3: new target |
| 460 | __ lw(a2, |
| 461 | FieldMemOperand(a3, JSFunction::kPrototypeOrInitialMapOffset)); |
| 462 | __ JumpIfSmi(a2, &rt_call); |
| 463 | __ GetObjectType(a2, t5, t4); |
| 464 | __ Branch(&rt_call, ne, t4, Operand(MAP_TYPE)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 465 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 466 | // Fall back to runtime if the expected base constructor and base |
| 467 | // constructor differ. |
| 468 | __ lw(t1, FieldMemOperand(a2, Map::kConstructorOrBackPointerOffset)); |
| 469 | __ Branch(&rt_call, ne, a1, Operand(t1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 470 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 471 | // Check that the constructor is not constructing a JSFunction (see |
| 472 | // comments in Runtime_NewObject in runtime.cc). In which case the |
| 473 | // initial map's instance type would be JS_FUNCTION_TYPE. |
| 474 | // a1: constructor function |
| 475 | // a2: initial map |
| 476 | __ lbu(t5, FieldMemOperand(a2, Map::kInstanceTypeOffset)); |
| 477 | __ Branch(&rt_call, eq, t5, Operand(JS_FUNCTION_TYPE)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 478 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 479 | // Now allocate the JSObject on the heap. |
| 480 | // a1: constructor function |
| 481 | // a2: initial map |
| 482 | // a3: new target |
| 483 | __ lbu(t3, FieldMemOperand(a2, Map::kInstanceSizeOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 484 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 485 | __ Allocate(t3, t4, t3, t6, &rt_call, SIZE_IN_WORDS); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 486 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 487 | // Allocated the JSObject, now initialize the fields. Map is set to |
| 488 | // initial map and properties and elements are set to empty fixed array. |
| 489 | // a1: constructor function |
| 490 | // a2: initial map |
| 491 | // a3: new target |
| 492 | // t4: JSObject (not HeapObject tagged - the actual address). |
| 493 | // t3: start of next object |
| 494 | __ LoadRoot(t6, Heap::kEmptyFixedArrayRootIndex); |
| 495 | __ mov(t5, t4); |
| 496 | STATIC_ASSERT(0 * kPointerSize == JSObject::kMapOffset); |
| 497 | __ sw(a2, MemOperand(t5, JSObject::kMapOffset)); |
| 498 | STATIC_ASSERT(1 * kPointerSize == JSObject::kPropertiesOffset); |
| 499 | __ sw(t6, MemOperand(t5, JSObject::kPropertiesOffset)); |
| 500 | STATIC_ASSERT(2 * kPointerSize == JSObject::kElementsOffset); |
| 501 | __ sw(t6, MemOperand(t5, JSObject::kElementsOffset)); |
| 502 | STATIC_ASSERT(3 * kPointerSize == JSObject::kHeaderSize); |
| 503 | __ Addu(t5, t5, Operand(3 * kPointerSize)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 504 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 505 | // Add the object tag to make the JSObject real, so that we can continue |
| 506 | // and jump into the continuation code at any time from now on. |
| 507 | __ Addu(t4, t4, Operand(kHeapObjectTag)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 508 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 509 | // Fill all the in-object properties with appropriate filler. |
| 510 | // t4: JSObject (tagged) |
| 511 | // t5: First in-object property of JSObject (not tagged) |
| 512 | __ LoadRoot(t7, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 513 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 514 | if (!is_api_function) { |
| 515 | Label no_inobject_slack_tracking; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 516 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 517 | MemOperand bit_field3 = FieldMemOperand(a2, Map::kBitField3Offset); |
| 518 | // Check if slack tracking is enabled. |
| 519 | __ lw(t0, bit_field3); |
| 520 | __ DecodeField<Map::ConstructionCounter>(t2, t0); |
| 521 | // t2: slack tracking counter |
| 522 | __ Branch(&no_inobject_slack_tracking, lt, t2, |
| 523 | Operand(Map::kSlackTrackingCounterEnd)); |
| 524 | // Decrease generous allocation count. |
| 525 | __ Subu(t0, t0, Operand(1 << Map::ConstructionCounter::kShift)); |
| 526 | __ sw(t0, bit_field3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 527 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 528 | // Allocate object with a slack. |
| 529 | __ lbu(a0, FieldMemOperand(a2, Map::kUnusedPropertyFieldsOffset)); |
| 530 | __ sll(a0, a0, kPointerSizeLog2); |
| 531 | __ subu(a0, t3, a0); |
| 532 | // a0: offset of first field after pre-allocated fields |
| 533 | if (FLAG_debug_code) { |
| 534 | __ Assert(le, kUnexpectedNumberOfPreAllocatedPropertyFields, t5, |
| 535 | Operand(a0)); |
| 536 | } |
| 537 | __ InitializeFieldsWithFiller(t5, a0, t7); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 538 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 539 | // To allow truncation fill the remaining fields with one pointer |
| 540 | // filler map. |
| 541 | __ LoadRoot(t7, Heap::kOnePointerFillerMapRootIndex); |
| 542 | __ InitializeFieldsWithFiller(t5, t3, t7); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 543 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 544 | // t2: slack tracking counter value before decreasing. |
| 545 | __ Branch(&allocated, ne, t2, Operand(Map::kSlackTrackingCounterEnd)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 546 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 547 | // Push the constructor, new_target and the object to the stack, |
| 548 | // and then the initial map as an argument to the runtime call. |
| 549 | __ Push(a1, a3, t4, a2); |
| 550 | __ CallRuntime(Runtime::kFinalizeInstanceSize); |
| 551 | __ Pop(a1, a3, t4); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 552 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 553 | // Continue with JSObject being successfully allocated. |
| 554 | // a1: constructor function |
| 555 | // a3: new target |
| 556 | // t4: JSObject |
| 557 | __ jmp(&allocated); |
| 558 | |
| 559 | __ bind(&no_inobject_slack_tracking); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 560 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 561 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 562 | __ InitializeFieldsWithFiller(t5, t3, t7); |
| 563 | |
| 564 | // Continue with JSObject being successfully allocated. |
| 565 | // a1: constructor function |
| 566 | // a3: new target |
| 567 | // t4: JSObject |
| 568 | __ jmp(&allocated); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 569 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 570 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 571 | // Allocate the new receiver object using the runtime call. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 572 | // a1: constructor function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 573 | // a3: new target |
| 574 | __ bind(&rt_call); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 575 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 576 | // Push the constructor and new_target twice, second pair as arguments |
| 577 | // to the runtime call. |
| 578 | __ Push(a1, a3, a1, a3); // constructor function, new target |
| 579 | __ CallRuntime(Runtime::kNewObject); |
| 580 | __ mov(t4, v0); |
| 581 | __ Pop(a1, a3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 582 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 583 | // Receiver for constructor call allocated. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 584 | // a1: constructor function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 585 | // a3: new target |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 586 | // t4: JSObject |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 587 | __ bind(&allocated); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 588 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 589 | // Retrieve smi-tagged arguments count from the stack. |
| 590 | __ lw(a0, MemOperand(sp)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 591 | } |
| 592 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 593 | __ SmiUntag(a0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 594 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 595 | if (create_implicit_receiver) { |
| 596 | // Push the allocated receiver to the stack. We need two copies |
| 597 | // because we may have to return the original one and the calling |
| 598 | // conventions dictate that the called function pops the receiver. |
| 599 | __ Push(t4, t4); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 600 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 601 | __ PushRoot(Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 602 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 603 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 604 | // Set up pointer to last argument. |
| 605 | __ Addu(a2, fp, Operand(StandardFrameConstants::kCallerSPOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 606 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 607 | // Copy arguments and receiver to the expression stack. |
| 608 | // a0: number of arguments |
| 609 | // a1: constructor function |
| 610 | // a2: address of last argument (caller sp) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 611 | // a3: new target |
| 612 | // t4: number of arguments (smi-tagged) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 613 | // sp[0]: receiver |
| 614 | // sp[1]: receiver |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 615 | // sp[2]: number of arguments (smi-tagged) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 616 | Label loop, entry; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 617 | __ SmiTag(t4, a0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 618 | __ jmp(&entry); |
| 619 | __ bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 620 | __ sll(t0, t4, kPointerSizeLog2 - kSmiTagSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 621 | __ Addu(t0, a2, Operand(t0)); |
| 622 | __ lw(t1, MemOperand(t0)); |
| 623 | __ push(t1); |
| 624 | __ bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 625 | __ Addu(t4, t4, Operand(-2)); |
| 626 | __ Branch(&loop, greater_equal, t4, Operand(zero_reg)); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 627 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 628 | // Call the function. |
| 629 | // a0: number of arguments |
| 630 | // a1: constructor function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 631 | // a3: new target |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 632 | if (is_api_function) { |
| 633 | __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 634 | Handle<Code> code = |
| 635 | masm->isolate()->builtins()->HandleApiCallConstruct(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 636 | __ Call(code, RelocInfo::CODE_TARGET); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 637 | } else { |
| 638 | ParameterCount actual(a0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 639 | __ InvokeFunction(a1, a3, actual, CALL_FUNCTION, |
| 640 | CheckDebugStepCallWrapper()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 641 | } |
| 642 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 643 | // Store offset of return address for deoptimizer. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 644 | if (create_implicit_receiver && !is_api_function) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 645 | masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset()); |
| 646 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 647 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 648 | // Restore context from the frame. |
| 649 | __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 650 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 651 | if (create_implicit_receiver) { |
| 652 | // If the result is an object (in the ECMA sense), we should get rid |
| 653 | // of the receiver and use the result; see ECMA-262 section 13.2.2-7 |
| 654 | // on page 74. |
| 655 | Label use_receiver, exit; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 656 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 657 | // If the result is a smi, it is *not* an object in the ECMA sense. |
| 658 | // v0: result |
| 659 | // sp[0]: receiver (newly allocated object) |
| 660 | // sp[1]: number of arguments (smi-tagged) |
| 661 | __ JumpIfSmi(v0, &use_receiver); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 662 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 663 | // If the type of the result (stored in its map) is less than |
| 664 | // FIRST_JS_RECEIVER_TYPE, it is not an object in the ECMA sense. |
| 665 | __ GetObjectType(v0, a1, a3); |
| 666 | __ Branch(&exit, greater_equal, a3, Operand(FIRST_JS_RECEIVER_TYPE)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 667 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 668 | // Throw away the result of the constructor invocation and use the |
| 669 | // on-stack receiver as the result. |
| 670 | __ bind(&use_receiver); |
| 671 | __ lw(v0, MemOperand(sp)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 672 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 673 | // Remove receiver from the stack, remove caller arguments, and |
| 674 | // return. |
| 675 | __ bind(&exit); |
| 676 | // v0: result |
| 677 | // sp[0]: receiver (newly allocated object) |
| 678 | // sp[1]: number of arguments (smi-tagged) |
| 679 | __ lw(a1, MemOperand(sp, 1 * kPointerSize)); |
| 680 | } else { |
| 681 | __ lw(a1, MemOperand(sp)); |
| 682 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 683 | |
| 684 | // Leave construct frame. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 685 | } |
| 686 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 687 | __ sll(t0, a1, kPointerSizeLog2 - 1); |
| 688 | __ Addu(sp, sp, t0); |
| 689 | __ Addu(sp, sp, kPointerSize); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 690 | if (create_implicit_receiver) { |
| 691 | __ IncrementCounter(isolate->counters()->constructed_objects(), 1, a1, a2); |
| 692 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 693 | __ Ret(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 694 | } |
| 695 | |
| 696 | |
| 697 | void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 698 | Generate_JSConstructStubHelper(masm, false, true); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 699 | } |
| 700 | |
| 701 | |
| 702 | void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 703 | Generate_JSConstructStubHelper(masm, true, true); |
| 704 | } |
| 705 | |
| 706 | |
| 707 | void Builtins::Generate_JSBuiltinsConstructStub(MacroAssembler* masm) { |
| 708 | Generate_JSConstructStubHelper(masm, false, false); |
| 709 | } |
| 710 | |
| 711 | |
| 712 | void Builtins::Generate_ConstructedNonConstructable(MacroAssembler* masm) { |
| 713 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 714 | __ Push(a1); |
| 715 | __ CallRuntime(Runtime::kThrowConstructedNonConstructable); |
| 716 | } |
| 717 | |
| 718 | |
| 719 | enum IsTagged { kArgcIsSmiTagged, kArgcIsUntaggedInt }; |
| 720 | |
| 721 | |
| 722 | // Clobbers a2; preserves all other registers. |
| 723 | static void Generate_CheckStackOverflow(MacroAssembler* masm, Register argc, |
| 724 | IsTagged argc_is_tagged) { |
| 725 | // Check the stack for overflow. We are not trying to catch |
| 726 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 727 | // limit" is checked. |
| 728 | Label okay; |
| 729 | __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); |
| 730 | // Make a2 the space we have left. The stack might already be overflowed |
| 731 | // here which will cause a2 to become negative. |
| 732 | __ Subu(a2, sp, a2); |
| 733 | // Check if the arguments will overflow the stack. |
| 734 | if (argc_is_tagged == kArgcIsSmiTagged) { |
| 735 | __ sll(t3, argc, kPointerSizeLog2 - kSmiTagSize); |
| 736 | } else { |
| 737 | DCHECK(argc_is_tagged == kArgcIsUntaggedInt); |
| 738 | __ sll(t3, argc, kPointerSizeLog2); |
| 739 | } |
| 740 | // Signed comparison. |
| 741 | __ Branch(&okay, gt, a2, Operand(t3)); |
| 742 | |
| 743 | // Out of stack space. |
| 744 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 745 | |
| 746 | __ bind(&okay); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 747 | } |
| 748 | |
| 749 | |
| 750 | static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, |
| 751 | bool is_construct) { |
| 752 | // Called from JSEntryStub::GenerateBody |
| 753 | |
| 754 | // ----------- S t a t e ------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 755 | // -- a0: new.target |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 756 | // -- a1: function |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 757 | // -- a2: receiver_pointer |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 758 | // -- a3: argc |
| 759 | // -- s0: argv |
| 760 | // ----------------------------------- |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 761 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 762 | |
| 763 | // Clear the context before we push it when entering the JS frame. |
| 764 | __ mov(cp, zero_reg); |
| 765 | |
| 766 | // Enter an internal frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 767 | { |
| 768 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 769 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 770 | // Setup the context (we need to use the caller context from the isolate). |
| 771 | ExternalReference context_address(Isolate::kContextAddress, |
| 772 | masm->isolate()); |
| 773 | __ li(cp, Operand(context_address)); |
| 774 | __ lw(cp, MemOperand(cp)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 775 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 776 | // Push the function and the receiver onto the stack. |
| 777 | __ Push(a1, a2); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 778 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 779 | // Check if we have enough stack space to push all arguments. |
| 780 | // Clobbers a2. |
| 781 | Generate_CheckStackOverflow(masm, a3, kArgcIsUntaggedInt); |
| 782 | |
| 783 | // Remember new.target. |
| 784 | __ mov(t1, a0); |
| 785 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 786 | // Copy arguments to the stack in a loop. |
| 787 | // a3: argc |
| 788 | // s0: argv, i.e. points to first arg |
| 789 | Label loop, entry; |
| 790 | __ sll(t0, a3, kPointerSizeLog2); |
| 791 | __ addu(t2, s0, t0); |
| 792 | __ b(&entry); |
| 793 | __ nop(); // Branch delay slot nop. |
| 794 | // t2 points past last arg. |
| 795 | __ bind(&loop); |
| 796 | __ lw(t0, MemOperand(s0)); // Read next parameter. |
| 797 | __ addiu(s0, s0, kPointerSize); |
| 798 | __ lw(t0, MemOperand(t0)); // Dereference handle. |
| 799 | __ push(t0); // Push parameter. |
| 800 | __ bind(&entry); |
| 801 | __ Branch(&loop, ne, s0, Operand(t2)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 802 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 803 | // Setup new.target and argc. |
| 804 | __ mov(a0, a3); |
| 805 | __ mov(a3, t1); |
| 806 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 807 | // Initialize all JavaScript callee-saved registers, since they will be seen |
| 808 | // by the garbage collector as part of handlers. |
| 809 | __ LoadRoot(t0, Heap::kUndefinedValueRootIndex); |
| 810 | __ mov(s1, t0); |
| 811 | __ mov(s2, t0); |
| 812 | __ mov(s3, t0); |
| 813 | __ mov(s4, t0); |
| 814 | __ mov(s5, t0); |
| 815 | // s6 holds the root address. Do not clobber. |
| 816 | // s7 is cp. Do not init. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 817 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 818 | // Invoke the code. |
| 819 | Handle<Code> builtin = is_construct |
| 820 | ? masm->isolate()->builtins()->Construct() |
| 821 | : masm->isolate()->builtins()->Call(); |
| 822 | __ Call(builtin, RelocInfo::CODE_TARGET); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 823 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 824 | // Leave internal frame. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 825 | } |
| 826 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 827 | __ Jump(ra); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 828 | } |
| 829 | |
| 830 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 831 | void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 832 | Generate_JSEntryTrampolineHelper(masm, false); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | |
| 836 | void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 837 | Generate_JSEntryTrampolineHelper(masm, true); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 838 | } |
| 839 | |
| 840 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 841 | // Generate code for entering a JS function with the interpreter. |
| 842 | // On entry to the function the receiver and arguments have been pushed on the |
| 843 | // stack left to right. The actual argument count matches the formal parameter |
| 844 | // count expected by the function. |
| 845 | // |
| 846 | // The live registers are: |
| 847 | // o a1: the JS function object being called. |
| 848 | // o a3: the new target |
| 849 | // o cp: our context |
| 850 | // o fp: the caller's frame pointer |
| 851 | // o sp: stack pointer |
| 852 | // o ra: return address |
| 853 | // |
| 854 | // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| 855 | // frames-mips.h for its layout. |
| 856 | // TODO(rmcilroy): We will need to include the current bytecode pointer in the |
| 857 | // frame. |
| 858 | void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { |
| 859 | // Open a frame scope to indicate that there is a frame on the stack. The |
| 860 | // MANUAL indicates that the scope shouldn't actually generate code to set up |
| 861 | // the frame (that is done below). |
| 862 | FrameScope frame_scope(masm, StackFrame::MANUAL); |
| 863 | |
| 864 | __ Push(ra, fp, cp, a1); |
| 865 | __ Addu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
| 866 | __ Push(a3); |
| 867 | |
| 868 | // Push zero for bytecode array offset. |
| 869 | __ Push(zero_reg); |
| 870 | |
| 871 | // Get the bytecode array from the function object and load the pointer to the |
| 872 | // first entry into kInterpreterBytecodeRegister. |
| 873 | __ lw(a0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 874 | __ lw(kInterpreterBytecodeArrayRegister, |
| 875 | FieldMemOperand(a0, SharedFunctionInfo::kFunctionDataOffset)); |
| 876 | |
| 877 | if (FLAG_debug_code) { |
| 878 | // Check function data field is actually a BytecodeArray object. |
| 879 | __ SmiTst(kInterpreterBytecodeArrayRegister, t0); |
| 880 | __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, t0, |
| 881 | Operand(zero_reg)); |
| 882 | __ GetObjectType(kInterpreterBytecodeArrayRegister, t0, t0); |
| 883 | __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, t0, |
| 884 | Operand(BYTECODE_ARRAY_TYPE)); |
| 885 | } |
| 886 | |
| 887 | // Allocate the local and temporary register file on the stack. |
| 888 | { |
| 889 | // Load frame size from the BytecodeArray object. |
| 890 | __ lw(t0, FieldMemOperand(kInterpreterBytecodeArrayRegister, |
| 891 | BytecodeArray::kFrameSizeOffset)); |
| 892 | |
| 893 | // Do a stack check to ensure we don't go over the limit. |
| 894 | Label ok; |
| 895 | __ Subu(t1, sp, Operand(t0)); |
| 896 | __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); |
| 897 | __ Branch(&ok, hs, t1, Operand(a2)); |
| 898 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 899 | __ bind(&ok); |
| 900 | |
| 901 | // If ok, push undefined as the initial value for all register file entries. |
| 902 | Label loop_header; |
| 903 | Label loop_check; |
| 904 | __ LoadRoot(t1, Heap::kUndefinedValueRootIndex); |
| 905 | __ Branch(&loop_check); |
| 906 | __ bind(&loop_header); |
| 907 | // TODO(rmcilroy): Consider doing more than one push per loop iteration. |
| 908 | __ push(t1); |
| 909 | // Continue loop if not done. |
| 910 | __ bind(&loop_check); |
| 911 | __ Subu(t0, t0, Operand(kPointerSize)); |
| 912 | __ Branch(&loop_header, ge, t0, Operand(zero_reg)); |
| 913 | } |
| 914 | |
| 915 | // TODO(rmcilroy): List of things not currently dealt with here but done in |
| 916 | // fullcodegen's prologue: |
| 917 | // - Support profiler (specifically profiling_counter). |
| 918 | // - Call ProfileEntryHookStub when isolate has a function_entry_hook. |
| 919 | // - Allow simulator stop operations if FLAG_stop_at is set. |
| 920 | // - Code aging of the BytecodeArray object. |
| 921 | |
| 922 | // Perform stack guard check. |
| 923 | { |
| 924 | Label ok; |
| 925 | __ LoadRoot(at, Heap::kStackLimitRootIndex); |
| 926 | __ Branch(&ok, hs, sp, Operand(at)); |
| 927 | __ push(kInterpreterBytecodeArrayRegister); |
| 928 | __ CallRuntime(Runtime::kStackGuard); |
| 929 | __ pop(kInterpreterBytecodeArrayRegister); |
| 930 | __ bind(&ok); |
| 931 | } |
| 932 | |
| 933 | // Load bytecode offset and dispatch table into registers. |
| 934 | __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); |
| 935 | __ Addu(kInterpreterRegisterFileRegister, fp, |
| 936 | Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); |
| 937 | __ li(kInterpreterBytecodeOffsetRegister, |
| 938 | Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); |
| 939 | __ LoadRoot(kInterpreterDispatchTableRegister, |
| 940 | Heap::kInterpreterTableRootIndex); |
| 941 | __ Addu(kInterpreterDispatchTableRegister, kInterpreterDispatchTableRegister, |
| 942 | Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 943 | |
| 944 | // Dispatch to the first bytecode handler for the function. |
| 945 | __ Addu(a0, kInterpreterBytecodeArrayRegister, |
| 946 | kInterpreterBytecodeOffsetRegister); |
| 947 | __ lbu(a0, MemOperand(a0)); |
| 948 | __ sll(at, a0, kPointerSizeLog2); |
| 949 | __ Addu(at, kInterpreterDispatchTableRegister, at); |
| 950 | __ lw(at, MemOperand(at)); |
| 951 | // TODO(rmcilroy): Make dispatch table point to code entrys to avoid untagging |
| 952 | // and header removal. |
| 953 | __ Addu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 954 | __ Call(at); |
| 955 | } |
| 956 | |
| 957 | |
| 958 | void Builtins::Generate_InterpreterExitTrampoline(MacroAssembler* masm) { |
| 959 | // TODO(rmcilroy): List of things not currently dealt with here but done in |
| 960 | // fullcodegen's EmitReturnSequence. |
| 961 | // - Supporting FLAG_trace for Runtime::TraceExit. |
| 962 | // - Support profiler (specifically decrementing profiling_counter |
| 963 | // appropriately and calling out to HandleInterrupts if necessary). |
| 964 | |
| 965 | // The return value is in accumulator, which is already in v0. |
| 966 | |
| 967 | // Leave the frame (also dropping the register file). |
| 968 | __ LeaveFrame(StackFrame::JAVA_SCRIPT); |
| 969 | |
| 970 | // Drop receiver + arguments and return. |
| 971 | __ lw(at, FieldMemOperand(kInterpreterBytecodeArrayRegister, |
| 972 | BytecodeArray::kParameterSizeOffset)); |
| 973 | __ Addu(sp, sp, at); |
| 974 | __ Jump(ra); |
| 975 | } |
| 976 | |
| 977 | |
| 978 | // static |
| 979 | void Builtins::Generate_InterpreterPushArgsAndCall(MacroAssembler* masm) { |
| 980 | // ----------- S t a t e ------------- |
| 981 | // -- a0 : the number of arguments (not including the receiver) |
| 982 | // -- a2 : the address of the first argument to be pushed. Subsequent |
| 983 | // arguments should be consecutive above this, in the same order as |
| 984 | // they are to be pushed onto the stack. |
| 985 | // -- a1 : the target to call (can be any Object). |
| 986 | // ----------------------------------- |
| 987 | |
| 988 | // Find the address of the last argument. |
| 989 | __ Addu(a3, a0, Operand(1)); // Add one for receiver. |
| 990 | __ sll(a3, a3, kPointerSizeLog2); |
| 991 | __ Subu(a3, a2, Operand(a3)); |
| 992 | |
| 993 | // Push the arguments. |
| 994 | Label loop_header, loop_check; |
| 995 | __ Branch(&loop_check); |
| 996 | __ bind(&loop_header); |
| 997 | __ lw(t0, MemOperand(a2)); |
| 998 | __ Addu(a2, a2, Operand(-kPointerSize)); |
| 999 | __ push(t0); |
| 1000 | __ bind(&loop_check); |
| 1001 | __ Branch(&loop_header, gt, a2, Operand(a3)); |
| 1002 | |
| 1003 | // Call the target. |
| 1004 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
| 1005 | } |
| 1006 | |
| 1007 | |
| 1008 | // static |
| 1009 | void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) { |
| 1010 | // ----------- S t a t e ------------- |
| 1011 | // -- a0 : argument count (not including receiver) |
| 1012 | // -- a3 : new target |
| 1013 | // -- a1 : constructor to call |
| 1014 | // -- a2 : address of the first argument |
| 1015 | // ----------------------------------- |
| 1016 | |
| 1017 | // Find the address of the last argument. |
| 1018 | __ sll(t0, a0, kPointerSizeLog2); |
| 1019 | __ Subu(t0, a2, Operand(t0)); |
| 1020 | |
| 1021 | // Push a slot for the receiver. |
| 1022 | __ push(zero_reg); |
| 1023 | |
| 1024 | // Push the arguments. |
| 1025 | Label loop_header, loop_check; |
| 1026 | __ Branch(&loop_check); |
| 1027 | __ bind(&loop_header); |
| 1028 | __ lw(t1, MemOperand(a2)); |
| 1029 | __ Addu(a2, a2, Operand(-kPointerSize)); |
| 1030 | __ push(t1); |
| 1031 | __ bind(&loop_check); |
| 1032 | __ Branch(&loop_header, gt, a2, Operand(t0)); |
| 1033 | |
| 1034 | // Call the constructor with a0, a1, and a3 unmodified. |
| 1035 | __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
| 1036 | } |
| 1037 | |
| 1038 | |
| 1039 | static void Generate_InterpreterNotifyDeoptimizedHelper( |
| 1040 | MacroAssembler* masm, Deoptimizer::BailoutType type) { |
| 1041 | // Enter an internal frame. |
| 1042 | { |
| 1043 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1044 | __ push(kInterpreterAccumulatorRegister); // Save accumulator register. |
| 1045 | |
| 1046 | // Pass the deoptimization type to the runtime system. |
| 1047 | __ li(a1, Operand(Smi::FromInt(static_cast<int>(type)))); |
| 1048 | __ push(a1); |
| 1049 | __ CallRuntime(Runtime::kNotifyDeoptimized); |
| 1050 | |
| 1051 | __ pop(kInterpreterAccumulatorRegister); // Restore accumulator register. |
| 1052 | // Tear down internal frame. |
| 1053 | } |
| 1054 | |
| 1055 | // Drop state (we don't use this for interpreter deopts). |
| 1056 | __ Drop(1); |
| 1057 | |
| 1058 | // Initialize register file register and dispatch table register. |
| 1059 | __ Addu(kInterpreterRegisterFileRegister, fp, |
| 1060 | Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); |
| 1061 | __ LoadRoot(kInterpreterDispatchTableRegister, |
| 1062 | Heap::kInterpreterTableRootIndex); |
| 1063 | __ Addu(kInterpreterDispatchTableRegister, kInterpreterDispatchTableRegister, |
| 1064 | Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 1065 | |
| 1066 | // Get the context from the frame. |
| 1067 | // TODO(rmcilroy): Update interpreter frame to expect current context at the |
| 1068 | // context slot instead of the function context. |
| 1069 | __ lw(kContextRegister, |
| 1070 | MemOperand(kInterpreterRegisterFileRegister, |
| 1071 | InterpreterFrameConstants::kContextFromRegisterPointer)); |
| 1072 | |
| 1073 | // Get the bytecode array pointer from the frame. |
| 1074 | __ lw(a1, |
| 1075 | MemOperand(kInterpreterRegisterFileRegister, |
| 1076 | InterpreterFrameConstants::kFunctionFromRegisterPointer)); |
| 1077 | __ lw(a1, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 1078 | __ lw(kInterpreterBytecodeArrayRegister, |
| 1079 | FieldMemOperand(a1, SharedFunctionInfo::kFunctionDataOffset)); |
| 1080 | |
| 1081 | if (FLAG_debug_code) { |
| 1082 | // Check function data field is actually a BytecodeArray object. |
| 1083 | __ SmiTst(kInterpreterBytecodeArrayRegister, at); |
| 1084 | __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, at, |
| 1085 | Operand(zero_reg)); |
| 1086 | __ GetObjectType(kInterpreterBytecodeArrayRegister, a1, a1); |
| 1087 | __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, a1, |
| 1088 | Operand(BYTECODE_ARRAY_TYPE)); |
| 1089 | } |
| 1090 | |
| 1091 | // Get the target bytecode offset from the frame. |
| 1092 | __ lw(kInterpreterBytecodeOffsetRegister, |
| 1093 | MemOperand( |
| 1094 | kInterpreterRegisterFileRegister, |
| 1095 | InterpreterFrameConstants::kBytecodeOffsetFromRegisterPointer)); |
| 1096 | __ SmiUntag(kInterpreterBytecodeOffsetRegister); |
| 1097 | |
| 1098 | // Dispatch to the target bytecode. |
| 1099 | __ Addu(a1, kInterpreterBytecodeArrayRegister, |
| 1100 | kInterpreterBytecodeOffsetRegister); |
| 1101 | __ lbu(a1, MemOperand(a1)); |
| 1102 | __ sll(a1, a1, kPointerSizeLog2); |
| 1103 | __ Addu(a1, kInterpreterDispatchTableRegister, a1); |
| 1104 | __ lw(a1, MemOperand(a1)); |
| 1105 | __ Addu(a1, a1, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 1106 | __ Jump(a1); |
| 1107 | } |
| 1108 | |
| 1109 | |
| 1110 | void Builtins::Generate_InterpreterNotifyDeoptimized(MacroAssembler* masm) { |
| 1111 | Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
| 1112 | } |
| 1113 | |
| 1114 | |
| 1115 | void Builtins::Generate_InterpreterNotifySoftDeoptimized(MacroAssembler* masm) { |
| 1116 | Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::SOFT); |
| 1117 | } |
| 1118 | |
| 1119 | |
| 1120 | void Builtins::Generate_InterpreterNotifyLazyDeoptimized(MacroAssembler* masm) { |
| 1121 | Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); |
| 1122 | } |
| 1123 | |
| 1124 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1125 | void Builtins::Generate_CompileLazy(MacroAssembler* masm) { |
| 1126 | CallRuntimePassFunction(masm, Runtime::kCompileLazy); |
| 1127 | GenerateTailCallToReturnedCode(masm); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1128 | } |
| 1129 | |
| 1130 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1131 | void Builtins::Generate_CompileOptimized(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1132 | CallRuntimePassFunction(masm, Runtime::kCompileOptimized_NotConcurrent); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1133 | GenerateTailCallToReturnedCode(masm); |
| 1134 | } |
| 1135 | |
| 1136 | |
| 1137 | void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1138 | CallRuntimePassFunction(masm, Runtime::kCompileOptimized_Concurrent); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1139 | GenerateTailCallToReturnedCode(masm); |
| 1140 | } |
| 1141 | |
| 1142 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1143 | static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { |
| 1144 | // For now, we are relying on the fact that make_code_young doesn't do any |
| 1145 | // garbage collection which allows us to save/restore the registers without |
| 1146 | // worrying about which of them contain pointers. We also don't build an |
| 1147 | // internal frame to make the code faster, since we shouldn't have to do stack |
| 1148 | // crawls in MakeCodeYoung. This seems a bit fragile. |
| 1149 | |
| 1150 | // Set a0 to point to the head of the PlatformCodeAge sequence. |
| 1151 | __ Subu(a0, a0, |
| 1152 | Operand(kNoCodeAgeSequenceLength - Assembler::kInstrSize)); |
| 1153 | |
| 1154 | // The following registers must be saved and restored when calling through to |
| 1155 | // the runtime: |
| 1156 | // a0 - contains return address (beginning of patch sequence) |
| 1157 | // a1 - isolate |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1158 | // a3 - new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1159 | RegList saved_regs = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1160 | (a0.bit() | a1.bit() | a3.bit() | ra.bit() | fp.bit()) & ~sp.bit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1161 | FrameScope scope(masm, StackFrame::MANUAL); |
| 1162 | __ MultiPush(saved_regs); |
| 1163 | __ PrepareCallCFunction(2, 0, a2); |
| 1164 | __ li(a1, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 1165 | __ CallCFunction( |
| 1166 | ExternalReference::get_make_code_young_function(masm->isolate()), 2); |
| 1167 | __ MultiPop(saved_regs); |
| 1168 | __ Jump(a0); |
| 1169 | } |
| 1170 | |
| 1171 | #define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C) \ |
| 1172 | void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking( \ |
| 1173 | MacroAssembler* masm) { \ |
| 1174 | GenerateMakeCodeYoungAgainCommon(masm); \ |
| 1175 | } \ |
| 1176 | void Builtins::Generate_Make##C##CodeYoungAgainOddMarking( \ |
| 1177 | MacroAssembler* masm) { \ |
| 1178 | GenerateMakeCodeYoungAgainCommon(masm); \ |
| 1179 | } |
| 1180 | CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR) |
| 1181 | #undef DEFINE_CODE_AGE_BUILTIN_GENERATOR |
| 1182 | |
| 1183 | |
| 1184 | void Builtins::Generate_MarkCodeAsExecutedOnce(MacroAssembler* masm) { |
| 1185 | // For now, as in GenerateMakeCodeYoungAgainCommon, we are relying on the fact |
| 1186 | // that make_code_young doesn't do any garbage collection which allows us to |
| 1187 | // save/restore the registers without worrying about which of them contain |
| 1188 | // pointers. |
| 1189 | |
| 1190 | // Set a0 to point to the head of the PlatformCodeAge sequence. |
| 1191 | __ Subu(a0, a0, |
| 1192 | Operand(kNoCodeAgeSequenceLength - Assembler::kInstrSize)); |
| 1193 | |
| 1194 | // The following registers must be saved and restored when calling through to |
| 1195 | // the runtime: |
| 1196 | // a0 - contains return address (beginning of patch sequence) |
| 1197 | // a1 - isolate |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1198 | // a3 - new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1199 | RegList saved_regs = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1200 | (a0.bit() | a1.bit() | a3.bit() | ra.bit() | fp.bit()) & ~sp.bit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1201 | FrameScope scope(masm, StackFrame::MANUAL); |
| 1202 | __ MultiPush(saved_regs); |
| 1203 | __ PrepareCallCFunction(2, 0, a2); |
| 1204 | __ li(a1, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 1205 | __ CallCFunction( |
| 1206 | ExternalReference::get_mark_code_as_executed_function(masm->isolate()), |
| 1207 | 2); |
| 1208 | __ MultiPop(saved_regs); |
| 1209 | |
| 1210 | // Perform prologue operations usually performed by the young code stub. |
| 1211 | __ Push(ra, fp, cp, a1); |
| 1212 | __ Addu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
| 1213 | |
| 1214 | // Jump to point after the code-age stub. |
| 1215 | __ Addu(a0, a0, Operand(kNoCodeAgeSequenceLength)); |
| 1216 | __ Jump(a0); |
| 1217 | } |
| 1218 | |
| 1219 | |
| 1220 | void Builtins::Generate_MarkCodeAsExecutedTwice(MacroAssembler* masm) { |
| 1221 | GenerateMakeCodeYoungAgainCommon(masm); |
| 1222 | } |
| 1223 | |
| 1224 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1225 | void Builtins::Generate_MarkCodeAsToBeExecutedOnce(MacroAssembler* masm) { |
| 1226 | Generate_MarkCodeAsExecutedOnce(masm); |
| 1227 | } |
| 1228 | |
| 1229 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1230 | static void Generate_NotifyStubFailureHelper(MacroAssembler* masm, |
| 1231 | SaveFPRegsMode save_doubles) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1232 | { |
| 1233 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1234 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1235 | // Preserve registers across notification, this is important for compiled |
| 1236 | // stubs that tail call the runtime on deopts passing their parameters in |
| 1237 | // registers. |
| 1238 | __ MultiPush(kJSCallerSaved | kCalleeSaved); |
| 1239 | // Pass the function and deoptimization type to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1240 | __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1241 | __ MultiPop(kJSCallerSaved | kCalleeSaved); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1242 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1243 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1244 | __ Addu(sp, sp, Operand(kPointerSize)); // Ignore state |
| 1245 | __ Jump(ra); // Jump to miss handler |
| 1246 | } |
| 1247 | |
| 1248 | |
| 1249 | void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) { |
| 1250 | Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs); |
| 1251 | } |
| 1252 | |
| 1253 | |
| 1254 | void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) { |
| 1255 | Generate_NotifyStubFailureHelper(masm, kSaveFPRegs); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1256 | } |
| 1257 | |
| 1258 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1259 | static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm, |
| 1260 | Deoptimizer::BailoutType type) { |
| 1261 | { |
| 1262 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1263 | // Pass the function and deoptimization type to the runtime system. |
| 1264 | __ li(a0, Operand(Smi::FromInt(static_cast<int>(type)))); |
| 1265 | __ push(a0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1266 | __ CallRuntime(Runtime::kNotifyDeoptimized); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1267 | } |
| 1268 | |
| 1269 | // Get the full codegen state from the stack and untag it -> t2. |
| 1270 | __ lw(t2, MemOperand(sp, 0 * kPointerSize)); |
| 1271 | __ SmiUntag(t2); |
| 1272 | // Switch on the state. |
| 1273 | Label with_tos_register, unknown_state; |
| 1274 | __ Branch(&with_tos_register, |
| 1275 | ne, t2, Operand(FullCodeGenerator::NO_REGISTERS)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1276 | __ Ret(USE_DELAY_SLOT); |
| 1277 | // Safe to fill delay slot Addu will emit one instruction. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1278 | __ Addu(sp, sp, Operand(1 * kPointerSize)); // Remove state. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1279 | |
| 1280 | __ bind(&with_tos_register); |
| 1281 | __ lw(v0, MemOperand(sp, 1 * kPointerSize)); |
| 1282 | __ Branch(&unknown_state, ne, t2, Operand(FullCodeGenerator::TOS_REG)); |
| 1283 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1284 | __ Ret(USE_DELAY_SLOT); |
| 1285 | // Safe to fill delay slot Addu will emit one instruction. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1286 | __ Addu(sp, sp, Operand(2 * kPointerSize)); // Remove state. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1287 | |
| 1288 | __ bind(&unknown_state); |
| 1289 | __ stop("no cases left"); |
| 1290 | } |
| 1291 | |
| 1292 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1293 | void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1294 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1295 | } |
| 1296 | |
| 1297 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1298 | void Builtins::Generate_NotifySoftDeoptimized(MacroAssembler* masm) { |
| 1299 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::SOFT); |
| 1300 | } |
| 1301 | |
| 1302 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1303 | void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1304 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1305 | } |
| 1306 | |
| 1307 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1308 | // Clobbers {t2, t3, t4, t5}. |
| 1309 | static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver, |
| 1310 | Register function_template_info, |
| 1311 | Label* receiver_check_failed) { |
| 1312 | Register signature = t2; |
| 1313 | Register map = t3; |
| 1314 | Register constructor = t4; |
| 1315 | Register scratch = t5; |
| 1316 | |
| 1317 | // If there is no signature, return the holder. |
| 1318 | __ lw(signature, FieldMemOperand(function_template_info, |
| 1319 | FunctionTemplateInfo::kSignatureOffset)); |
| 1320 | Label receiver_check_passed; |
| 1321 | __ JumpIfRoot(signature, Heap::kUndefinedValueRootIndex, |
| 1322 | &receiver_check_passed); |
| 1323 | |
| 1324 | // Walk the prototype chain. |
| 1325 | __ lw(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 1326 | Label prototype_loop_start; |
| 1327 | __ bind(&prototype_loop_start); |
| 1328 | |
| 1329 | // Get the constructor, if any. |
| 1330 | __ GetMapConstructor(constructor, map, scratch, scratch); |
| 1331 | Label next_prototype; |
| 1332 | __ Branch(&next_prototype, ne, scratch, Operand(JS_FUNCTION_TYPE)); |
| 1333 | Register type = constructor; |
| 1334 | __ lw(type, |
| 1335 | FieldMemOperand(constructor, JSFunction::kSharedFunctionInfoOffset)); |
| 1336 | __ lw(type, FieldMemOperand(type, SharedFunctionInfo::kFunctionDataOffset)); |
| 1337 | |
| 1338 | // Loop through the chain of inheriting function templates. |
| 1339 | Label function_template_loop; |
| 1340 | __ bind(&function_template_loop); |
| 1341 | |
| 1342 | // If the signatures match, we have a compatible receiver. |
| 1343 | __ Branch(&receiver_check_passed, eq, signature, Operand(type), |
| 1344 | USE_DELAY_SLOT); |
| 1345 | |
| 1346 | // If the current type is not a FunctionTemplateInfo, load the next prototype |
| 1347 | // in the chain. |
| 1348 | __ JumpIfSmi(type, &next_prototype); |
| 1349 | __ GetObjectType(type, scratch, scratch); |
| 1350 | __ Branch(&next_prototype, ne, scratch, Operand(FUNCTION_TEMPLATE_INFO_TYPE)); |
| 1351 | |
| 1352 | // Otherwise load the parent function template and iterate. |
| 1353 | __ lw(type, |
| 1354 | FieldMemOperand(type, FunctionTemplateInfo::kParentTemplateOffset)); |
| 1355 | __ Branch(&function_template_loop); |
| 1356 | |
| 1357 | // Load the next prototype and iterate. |
| 1358 | __ bind(&next_prototype); |
| 1359 | __ lw(receiver, FieldMemOperand(map, Map::kPrototypeOffset)); |
| 1360 | // End if the prototype is null or not hidden. |
| 1361 | __ JumpIfRoot(receiver, Heap::kNullValueRootIndex, receiver_check_failed); |
| 1362 | __ lw(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 1363 | __ lw(scratch, FieldMemOperand(map, Map::kBitField3Offset)); |
| 1364 | __ DecodeField<Map::IsHiddenPrototype>(scratch); |
| 1365 | __ Branch(receiver_check_failed, eq, scratch, Operand(zero_reg)); |
| 1366 | |
| 1367 | __ Branch(&prototype_loop_start); |
| 1368 | |
| 1369 | __ bind(&receiver_check_passed); |
| 1370 | } |
| 1371 | |
| 1372 | |
| 1373 | void Builtins::Generate_HandleFastApiCall(MacroAssembler* masm) { |
| 1374 | // ----------- S t a t e ------------- |
| 1375 | // -- a0 : number of arguments excluding receiver |
| 1376 | // -- a1 : callee |
| 1377 | // -- ra : return address |
| 1378 | // -- sp[0] : last argument |
| 1379 | // -- ... |
| 1380 | // -- sp[4 * (argc - 1)] : first argument |
| 1381 | // -- sp[4 * argc] : receiver |
| 1382 | // ----------------------------------- |
| 1383 | |
| 1384 | // Load the FunctionTemplateInfo. |
| 1385 | __ lw(t1, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 1386 | __ lw(t1, FieldMemOperand(t1, SharedFunctionInfo::kFunctionDataOffset)); |
| 1387 | |
| 1388 | // Do the compatible receiver check. |
| 1389 | Label receiver_check_failed; |
| 1390 | __ sll(at, a0, kPointerSizeLog2); |
| 1391 | __ Addu(t8, sp, at); |
| 1392 | __ lw(t0, MemOperand(t8)); |
| 1393 | CompatibleReceiverCheck(masm, t0, t1, &receiver_check_failed); |
| 1394 | |
| 1395 | // Get the callback offset from the FunctionTemplateInfo, and jump to the |
| 1396 | // beginning of the code. |
| 1397 | __ lw(t2, FieldMemOperand(t1, FunctionTemplateInfo::kCallCodeOffset)); |
| 1398 | __ lw(t2, FieldMemOperand(t2, CallHandlerInfo::kFastHandlerOffset)); |
| 1399 | __ Addu(t2, t2, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 1400 | __ Jump(t2); |
| 1401 | |
| 1402 | // Compatible receiver check failed: throw an Illegal Invocation exception. |
| 1403 | __ bind(&receiver_check_failed); |
| 1404 | // Drop the arguments (including the receiver); |
| 1405 | __ Addu(t8, t8, Operand(kPointerSize)); |
| 1406 | __ addu(sp, t8, zero_reg); |
| 1407 | __ TailCallRuntime(Runtime::kThrowIllegalInvocation); |
| 1408 | } |
| 1409 | |
| 1410 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1411 | void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1412 | // Lookup the function in the JavaScript frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1413 | __ lw(a0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1414 | { |
| 1415 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1416 | // Pass function as argument. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1417 | __ push(a0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1418 | __ CallRuntime(Runtime::kCompileForOnStackReplacement); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1419 | } |
| 1420 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1421 | // If the code object is null, just return to the unoptimized code. |
| 1422 | __ Ret(eq, v0, Operand(Smi::FromInt(0))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1423 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1424 | // Load deoptimization data from the code object. |
| 1425 | // <deopt_data> = <code>[#deoptimization_data_offset] |
| 1426 | __ lw(a1, MemOperand(v0, Code::kDeoptimizationDataOffset - kHeapObjectTag)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1427 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1428 | // Load the OSR entrypoint offset from the deoptimization data. |
| 1429 | // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset] |
| 1430 | __ lw(a1, MemOperand(a1, FixedArray::OffsetOfElementAt( |
| 1431 | DeoptimizationInputData::kOsrPcOffsetIndex) - kHeapObjectTag)); |
| 1432 | __ SmiUntag(a1); |
| 1433 | |
| 1434 | // Compute the target address = code_obj + header_size + osr_offset |
| 1435 | // <entry_addr> = <code_obj> + #header_size + <osr_offset> |
| 1436 | __ addu(v0, v0, a1); |
| 1437 | __ addiu(ra, v0, Code::kHeaderSize - kHeapObjectTag); |
| 1438 | |
| 1439 | // And "return" to the OSR entry point of the function. |
| 1440 | __ Ret(); |
| 1441 | } |
| 1442 | |
| 1443 | |
| 1444 | void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) { |
| 1445 | // We check the stack limit as indicator that recompilation might be done. |
| 1446 | Label ok; |
| 1447 | __ LoadRoot(at, Heap::kStackLimitRootIndex); |
| 1448 | __ Branch(&ok, hs, sp, Operand(at)); |
| 1449 | { |
| 1450 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1451 | __ CallRuntime(Runtime::kStackGuard); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1452 | } |
| 1453 | __ Jump(masm->isolate()->builtins()->OnStackReplacement(), |
| 1454 | RelocInfo::CODE_TARGET); |
| 1455 | |
| 1456 | __ bind(&ok); |
| 1457 | __ Ret(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1458 | } |
| 1459 | |
| 1460 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1461 | // static |
| 1462 | void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm, |
| 1463 | int field_index) { |
| 1464 | // ----------- S t a t e ------------- |
| 1465 | // -- sp[0] : receiver |
| 1466 | // ----------------------------------- |
| 1467 | |
| 1468 | // 1. Pop receiver into a0 and check that it's actually a JSDate object. |
| 1469 | Label receiver_not_date; |
| 1470 | { |
| 1471 | __ Pop(a0); |
| 1472 | __ JumpIfSmi(a0, &receiver_not_date); |
| 1473 | __ GetObjectType(a0, t0, t0); |
| 1474 | __ Branch(&receiver_not_date, ne, t0, Operand(JS_DATE_TYPE)); |
| 1475 | } |
| 1476 | |
| 1477 | // 2. Load the specified date field, falling back to the runtime as necessary. |
| 1478 | if (field_index == JSDate::kDateValue) { |
| 1479 | __ Ret(USE_DELAY_SLOT); |
| 1480 | __ lw(v0, FieldMemOperand(a0, JSDate::kValueOffset)); // In delay slot. |
| 1481 | } else { |
| 1482 | if (field_index < JSDate::kFirstUncachedField) { |
| 1483 | Label stamp_mismatch; |
| 1484 | __ li(a1, Operand(ExternalReference::date_cache_stamp(masm->isolate()))); |
| 1485 | __ lw(a1, MemOperand(a1)); |
| 1486 | __ lw(t0, FieldMemOperand(a0, JSDate::kCacheStampOffset)); |
| 1487 | __ Branch(&stamp_mismatch, ne, t0, Operand(a1)); |
| 1488 | __ Ret(USE_DELAY_SLOT); |
| 1489 | __ lw(v0, FieldMemOperand( |
| 1490 | a0, JSDate::kValueOffset + |
| 1491 | field_index * kPointerSize)); // In delay slot. |
| 1492 | __ bind(&stamp_mismatch); |
| 1493 | } |
| 1494 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1495 | __ PrepareCallCFunction(2, t0); |
| 1496 | __ li(a1, Operand(Smi::FromInt(field_index))); |
| 1497 | __ CallCFunction( |
| 1498 | ExternalReference::get_date_field_function(masm->isolate()), 2); |
| 1499 | } |
| 1500 | __ Ret(); |
| 1501 | |
| 1502 | // 3. Raise a TypeError if the receiver is not a date. |
| 1503 | __ bind(&receiver_not_date); |
| 1504 | __ TailCallRuntime(Runtime::kThrowNotDateError); |
| 1505 | } |
| 1506 | |
| 1507 | |
| 1508 | // static |
| 1509 | void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) { |
| 1510 | // ----------- S t a t e ------------- |
| 1511 | // -- a0 : argc |
| 1512 | // -- sp[0] : argArray |
| 1513 | // -- sp[4] : thisArg |
| 1514 | // -- sp[8] : receiver |
| 1515 | // ----------------------------------- |
| 1516 | |
| 1517 | // 1. Load receiver into a1, argArray into a0 (if present), remove all |
| 1518 | // arguments from the stack (including the receiver), and push thisArg (if |
| 1519 | // present) instead. |
| 1520 | { |
| 1521 | Label no_arg; |
| 1522 | Register scratch = t0; |
| 1523 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| 1524 | __ mov(a3, a2); |
| 1525 | __ sll(scratch, a0, kPointerSizeLog2); |
| 1526 | __ Addu(a0, sp, Operand(scratch)); |
| 1527 | __ lw(a1, MemOperand(a0)); // receiver |
| 1528 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 1529 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1530 | __ lw(a2, MemOperand(a0)); // thisArg |
| 1531 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 1532 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1533 | __ lw(a3, MemOperand(a0)); // argArray |
| 1534 | __ bind(&no_arg); |
| 1535 | __ Addu(sp, sp, Operand(scratch)); |
| 1536 | __ sw(a2, MemOperand(sp)); |
| 1537 | __ mov(a0, a3); |
| 1538 | } |
| 1539 | |
| 1540 | // ----------- S t a t e ------------- |
| 1541 | // -- a0 : argArray |
| 1542 | // -- a1 : receiver |
| 1543 | // -- sp[0] : thisArg |
| 1544 | // ----------------------------------- |
| 1545 | |
| 1546 | // 2. Make sure the receiver is actually callable. |
| 1547 | Label receiver_not_callable; |
| 1548 | __ JumpIfSmi(a1, &receiver_not_callable); |
| 1549 | __ lw(t0, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 1550 | __ lbu(t0, FieldMemOperand(t0, Map::kBitFieldOffset)); |
| 1551 | __ And(t0, t0, Operand(1 << Map::kIsCallable)); |
| 1552 | __ Branch(&receiver_not_callable, eq, t0, Operand(zero_reg)); |
| 1553 | |
| 1554 | // 3. Tail call with no arguments if argArray is null or undefined. |
| 1555 | Label no_arguments; |
| 1556 | __ JumpIfRoot(a0, Heap::kNullValueRootIndex, &no_arguments); |
| 1557 | __ JumpIfRoot(a0, Heap::kUndefinedValueRootIndex, &no_arguments); |
| 1558 | |
| 1559 | // 4a. Apply the receiver to the given argArray (passing undefined for |
| 1560 | // new.target). |
| 1561 | __ LoadRoot(a3, Heap::kUndefinedValueRootIndex); |
| 1562 | __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); |
| 1563 | |
| 1564 | // 4b. The argArray is either null or undefined, so we tail call without any |
| 1565 | // arguments to the receiver. |
| 1566 | __ bind(&no_arguments); |
| 1567 | { |
| 1568 | __ mov(a0, zero_reg); |
| 1569 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
| 1570 | } |
| 1571 | |
| 1572 | // 4c. The receiver is not callable, throw an appropriate TypeError. |
| 1573 | __ bind(&receiver_not_callable); |
| 1574 | { |
| 1575 | __ sw(a1, MemOperand(sp)); |
| 1576 | __ TailCallRuntime(Runtime::kThrowApplyNonFunction); |
| 1577 | } |
| 1578 | } |
| 1579 | |
| 1580 | |
| 1581 | // static |
| 1582 | void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1583 | // 1. Make sure we have at least one argument. |
| 1584 | // a0: actual number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1585 | { |
| 1586 | Label done; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1587 | __ Branch(&done, ne, a0, Operand(zero_reg)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1588 | __ PushRoot(Heap::kUndefinedValueRootIndex); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1589 | __ Addu(a0, a0, Operand(1)); |
| 1590 | __ bind(&done); |
| 1591 | } |
| 1592 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1593 | // 2. Get the function to call (passed as receiver) from the stack. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1594 | // a0: actual number of arguments |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1595 | __ sll(at, a0, kPointerSizeLog2); |
| 1596 | __ addu(at, sp, at); |
| 1597 | __ lw(a1, MemOperand(at)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1598 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1599 | // 3. Shift arguments and return address one slot down on the stack |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1600 | // (overwriting the original receiver). Adjust argument count to make |
| 1601 | // the original first argument the new receiver. |
| 1602 | // a0: actual number of arguments |
| 1603 | // a1: function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1604 | { |
| 1605 | Label loop; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1606 | // Calculate the copy start address (destination). Copy end address is sp. |
| 1607 | __ sll(at, a0, kPointerSizeLog2); |
| 1608 | __ addu(a2, sp, at); |
| 1609 | |
| 1610 | __ bind(&loop); |
| 1611 | __ lw(at, MemOperand(a2, -kPointerSize)); |
| 1612 | __ sw(at, MemOperand(a2)); |
| 1613 | __ Subu(a2, a2, Operand(kPointerSize)); |
| 1614 | __ Branch(&loop, ne, a2, Operand(sp)); |
| 1615 | // Adjust the actual number of arguments and remove the top element |
| 1616 | // (which is a copy of the last argument). |
| 1617 | __ Subu(a0, a0, Operand(1)); |
| 1618 | __ Pop(); |
| 1619 | } |
| 1620 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1621 | // 4. Call the callable. |
| 1622 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1623 | } |
| 1624 | |
| 1625 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1626 | void Builtins::Generate_ReflectApply(MacroAssembler* masm) { |
| 1627 | // ----------- S t a t e ------------- |
| 1628 | // -- a0 : argc |
| 1629 | // -- sp[0] : argumentsList |
| 1630 | // -- sp[4] : thisArgument |
| 1631 | // -- sp[8] : target |
| 1632 | // -- sp[12] : receiver |
| 1633 | // ----------------------------------- |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1634 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1635 | // 1. Load target into a1 (if present), argumentsList into a0 (if present), |
| 1636 | // remove all arguments from the stack (including the receiver), and push |
| 1637 | // thisArgument (if present) instead. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1638 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1639 | Label no_arg; |
| 1640 | Register scratch = t0; |
| 1641 | __ LoadRoot(a1, Heap::kUndefinedValueRootIndex); |
| 1642 | __ mov(a2, a1); |
| 1643 | __ mov(a3, a1); |
| 1644 | __ sll(scratch, a0, kPointerSizeLog2); |
| 1645 | __ mov(a0, scratch); |
| 1646 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 1647 | __ Branch(&no_arg, lt, a0, Operand(zero_reg)); |
| 1648 | __ Addu(a0, sp, Operand(a0)); |
| 1649 | __ lw(a1, MemOperand(a0)); // target |
| 1650 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 1651 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1652 | __ lw(a2, MemOperand(a0)); // thisArgument |
| 1653 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 1654 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1655 | __ lw(a3, MemOperand(a0)); // argumentsList |
| 1656 | __ bind(&no_arg); |
| 1657 | __ Addu(sp, sp, Operand(scratch)); |
| 1658 | __ sw(a2, MemOperand(sp)); |
| 1659 | __ mov(a0, a3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1660 | } |
| 1661 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1662 | // ----------- S t a t e ------------- |
| 1663 | // -- a0 : argumentsList |
| 1664 | // -- a1 : target |
| 1665 | // -- sp[0] : thisArgument |
| 1666 | // ----------------------------------- |
| 1667 | |
| 1668 | // 2. Make sure the target is actually callable. |
| 1669 | Label target_not_callable; |
| 1670 | __ JumpIfSmi(a1, &target_not_callable); |
| 1671 | __ lw(t0, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 1672 | __ lbu(t0, FieldMemOperand(t0, Map::kBitFieldOffset)); |
| 1673 | __ And(t0, t0, Operand(1 << Map::kIsCallable)); |
| 1674 | __ Branch(&target_not_callable, eq, t0, Operand(zero_reg)); |
| 1675 | |
| 1676 | // 3a. Apply the target to the given argumentsList (passing undefined for |
| 1677 | // new.target). |
| 1678 | __ LoadRoot(a3, Heap::kUndefinedValueRootIndex); |
| 1679 | __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); |
| 1680 | |
| 1681 | // 3b. The target is not callable, throw an appropriate TypeError. |
| 1682 | __ bind(&target_not_callable); |
| 1683 | { |
| 1684 | __ sw(a1, MemOperand(sp)); |
| 1685 | __ TailCallRuntime(Runtime::kThrowApplyNonFunction); |
| 1686 | } |
| 1687 | } |
| 1688 | |
| 1689 | |
| 1690 | void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) { |
| 1691 | // ----------- S t a t e ------------- |
| 1692 | // -- a0 : argc |
| 1693 | // -- sp[0] : new.target (optional) |
| 1694 | // -- sp[4] : argumentsList |
| 1695 | // -- sp[8] : target |
| 1696 | // -- sp[12] : receiver |
| 1697 | // ----------------------------------- |
| 1698 | |
| 1699 | // 1. Load target into a1 (if present), argumentsList into a0 (if present), |
| 1700 | // new.target into a3 (if present, otherwise use target), remove all |
| 1701 | // arguments from the stack (including the receiver), and push thisArgument |
| 1702 | // (if present) instead. |
| 1703 | { |
| 1704 | Label no_arg; |
| 1705 | Register scratch = t0; |
| 1706 | __ LoadRoot(a1, Heap::kUndefinedValueRootIndex); |
| 1707 | __ mov(a2, a1); |
| 1708 | __ sll(scratch, a0, kPointerSizeLog2); |
| 1709 | __ Addu(a0, sp, Operand(scratch)); |
| 1710 | __ sw(a2, MemOperand(a0)); // receiver |
| 1711 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 1712 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1713 | __ lw(a1, MemOperand(a0)); // target |
| 1714 | __ mov(a3, a1); // new.target defaults to target |
| 1715 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 1716 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1717 | __ lw(a2, MemOperand(a0)); // argumentsList |
| 1718 | __ Subu(a0, a0, Operand(kPointerSize)); |
| 1719 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1720 | __ lw(a3, MemOperand(a0)); // new.target |
| 1721 | __ bind(&no_arg); |
| 1722 | __ Addu(sp, sp, Operand(scratch)); |
| 1723 | __ mov(a0, a2); |
| 1724 | } |
| 1725 | |
| 1726 | // ----------- S t a t e ------------- |
| 1727 | // -- a0 : argumentsList |
| 1728 | // -- a3 : new.target |
| 1729 | // -- a1 : target |
| 1730 | // -- sp[0] : receiver (undefined) |
| 1731 | // ----------------------------------- |
| 1732 | |
| 1733 | // 2. Make sure the target is actually a constructor. |
| 1734 | Label target_not_constructor; |
| 1735 | __ JumpIfSmi(a1, &target_not_constructor); |
| 1736 | __ lw(t0, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 1737 | __ lbu(t0, FieldMemOperand(t0, Map::kBitFieldOffset)); |
| 1738 | __ And(t0, t0, Operand(1 << Map::kIsConstructor)); |
| 1739 | __ Branch(&target_not_constructor, eq, t0, Operand(zero_reg)); |
| 1740 | |
| 1741 | // 3. Make sure the target is actually a constructor. |
| 1742 | Label new_target_not_constructor; |
| 1743 | __ JumpIfSmi(a3, &new_target_not_constructor); |
| 1744 | __ lw(t0, FieldMemOperand(a3, HeapObject::kMapOffset)); |
| 1745 | __ lbu(t0, FieldMemOperand(t0, Map::kBitFieldOffset)); |
| 1746 | __ And(t0, t0, Operand(1 << Map::kIsConstructor)); |
| 1747 | __ Branch(&new_target_not_constructor, eq, t0, Operand(zero_reg)); |
| 1748 | |
| 1749 | // 4a. Construct the target with the given new.target and argumentsList. |
| 1750 | __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); |
| 1751 | |
| 1752 | // 4b. The target is not a constructor, throw an appropriate TypeError. |
| 1753 | __ bind(&target_not_constructor); |
| 1754 | { |
| 1755 | __ sw(a1, MemOperand(sp)); |
| 1756 | __ TailCallRuntime(Runtime::kThrowCalledNonCallable); |
| 1757 | } |
| 1758 | |
| 1759 | // 4c. The new.target is not a constructor, throw an appropriate TypeError. |
| 1760 | __ bind(&new_target_not_constructor); |
| 1761 | { |
| 1762 | __ sw(a3, MemOperand(sp)); |
| 1763 | __ TailCallRuntime(Runtime::kThrowCalledNonCallable); |
| 1764 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1765 | } |
| 1766 | |
| 1767 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1768 | static void ArgumentAdaptorStackCheck(MacroAssembler* masm, |
| 1769 | Label* stack_overflow) { |
| 1770 | // ----------- S t a t e ------------- |
| 1771 | // -- a0 : actual number of arguments |
| 1772 | // -- a1 : function (passed through to callee) |
| 1773 | // -- a2 : expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1774 | // -- a3 : new target (passed through to callee) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1775 | // ----------------------------------- |
| 1776 | // Check the stack for overflow. We are not trying to catch |
| 1777 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 1778 | // limit" is checked. |
| 1779 | __ LoadRoot(t1, Heap::kRealStackLimitRootIndex); |
| 1780 | // Make t1 the space we have left. The stack might already be overflowed |
| 1781 | // here which will cause t1 to become negative. |
| 1782 | __ subu(t1, sp, t1); |
| 1783 | // Check if the arguments will overflow the stack. |
| 1784 | __ sll(at, a2, kPointerSizeLog2); |
| 1785 | // Signed comparison. |
| 1786 | __ Branch(stack_overflow, le, t1, Operand(at)); |
| 1787 | } |
| 1788 | |
| 1789 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1790 | static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1791 | __ sll(a0, a0, kSmiTagSize); |
| 1792 | __ li(t0, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 1793 | __ MultiPush(a0.bit() | a1.bit() | t0.bit() | fp.bit() | ra.bit()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1794 | __ Addu(fp, sp, |
| 1795 | Operand(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1796 | } |
| 1797 | |
| 1798 | |
| 1799 | static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1800 | // ----------- S t a t e ------------- |
| 1801 | // -- v0 : result being passed through |
| 1802 | // ----------------------------------- |
| 1803 | // Get the number of arguments passed (as a smi), tear down the frame and |
| 1804 | // then tear down the parameters. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1805 | __ lw(a1, MemOperand(fp, -(StandardFrameConstants::kFixedFrameSizeFromFp + |
| 1806 | kPointerSize))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1807 | __ mov(sp, fp); |
| 1808 | __ MultiPop(fp.bit() | ra.bit()); |
| 1809 | __ sll(t0, a1, kPointerSizeLog2 - kSmiTagSize); |
| 1810 | __ Addu(sp, sp, t0); |
| 1811 | // Adjust for the receiver. |
| 1812 | __ Addu(sp, sp, Operand(kPointerSize)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1813 | } |
| 1814 | |
| 1815 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1816 | // static |
| 1817 | void Builtins::Generate_Apply(MacroAssembler* masm) { |
| 1818 | // ----------- S t a t e ------------- |
| 1819 | // -- a0 : argumentsList |
| 1820 | // -- a1 : target |
| 1821 | // -- a3 : new.target (checked to be constructor or undefined) |
| 1822 | // -- sp[0] : thisArgument |
| 1823 | // ----------------------------------- |
| 1824 | |
| 1825 | // Create the list of arguments from the array-like argumentsList. |
| 1826 | { |
| 1827 | Label create_arguments, create_array, create_runtime, done_create; |
| 1828 | __ JumpIfSmi(a0, &create_runtime); |
| 1829 | |
| 1830 | // Load the map of argumentsList into a2. |
| 1831 | __ lw(a2, FieldMemOperand(a0, HeapObject::kMapOffset)); |
| 1832 | |
| 1833 | // Load native context into t0. |
| 1834 | __ lw(t0, NativeContextMemOperand()); |
| 1835 | |
| 1836 | // Check if argumentsList is an (unmodified) arguments object. |
| 1837 | __ lw(at, ContextMemOperand(t0, Context::SLOPPY_ARGUMENTS_MAP_INDEX)); |
| 1838 | __ Branch(&create_arguments, eq, a2, Operand(at)); |
| 1839 | __ lw(at, ContextMemOperand(t0, Context::STRICT_ARGUMENTS_MAP_INDEX)); |
| 1840 | __ Branch(&create_arguments, eq, a2, Operand(at)); |
| 1841 | |
| 1842 | // Check if argumentsList is a fast JSArray. |
| 1843 | __ lw(v0, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 1844 | __ lbu(v0, FieldMemOperand(v0, Map::kInstanceTypeOffset)); |
| 1845 | __ Branch(&create_array, eq, v0, Operand(JS_ARRAY_TYPE)); |
| 1846 | |
| 1847 | // Ask the runtime to create the list (actually a FixedArray). |
| 1848 | __ bind(&create_runtime); |
| 1849 | { |
| 1850 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1851 | __ Push(a1, a3, a0); |
| 1852 | __ CallRuntime(Runtime::kCreateListFromArrayLike); |
| 1853 | __ mov(a0, v0); |
| 1854 | __ Pop(a1, a3); |
| 1855 | __ lw(a2, FieldMemOperand(v0, FixedArray::kLengthOffset)); |
| 1856 | __ SmiUntag(a2); |
| 1857 | } |
| 1858 | __ Branch(&done_create); |
| 1859 | |
| 1860 | // Try to create the list from an arguments object. |
| 1861 | __ bind(&create_arguments); |
| 1862 | __ lw(a2, |
| 1863 | FieldMemOperand(a0, JSObject::kHeaderSize + |
| 1864 | Heap::kArgumentsLengthIndex * kPointerSize)); |
| 1865 | __ lw(t0, FieldMemOperand(a0, JSObject::kElementsOffset)); |
| 1866 | __ lw(at, FieldMemOperand(t0, FixedArray::kLengthOffset)); |
| 1867 | __ Branch(&create_runtime, ne, a2, Operand(at)); |
| 1868 | __ SmiUntag(a2); |
| 1869 | __ mov(a0, t0); |
| 1870 | __ Branch(&done_create); |
| 1871 | |
| 1872 | // Try to create the list from a JSArray object. |
| 1873 | __ bind(&create_array); |
| 1874 | __ lw(a2, FieldMemOperand(a2, Map::kBitField2Offset)); |
| 1875 | __ DecodeField<Map::ElementsKindBits>(a2); |
| 1876 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 1877 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 1878 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 1879 | __ Branch(&create_runtime, hi, a2, Operand(FAST_ELEMENTS)); |
| 1880 | __ Branch(&create_runtime, eq, a2, Operand(FAST_HOLEY_SMI_ELEMENTS)); |
| 1881 | __ lw(a2, FieldMemOperand(a0, JSArray::kLengthOffset)); |
| 1882 | __ lw(a0, FieldMemOperand(a0, JSArray::kElementsOffset)); |
| 1883 | __ SmiUntag(a2); |
| 1884 | |
| 1885 | __ bind(&done_create); |
| 1886 | } |
| 1887 | |
| 1888 | // Check for stack overflow. |
| 1889 | { |
| 1890 | // Check the stack for overflow. We are not trying to catch interruptions |
| 1891 | // (i.e. debug break and preemption) here, so check the "real stack limit". |
| 1892 | Label done; |
| 1893 | __ LoadRoot(t0, Heap::kRealStackLimitRootIndex); |
| 1894 | // Make ip the space we have left. The stack might already be overflowed |
| 1895 | // here which will cause ip to become negative. |
| 1896 | __ Subu(t0, sp, t0); |
| 1897 | // Check if the arguments will overflow the stack. |
| 1898 | __ sll(at, a2, kPointerSizeLog2); |
| 1899 | __ Branch(&done, gt, t0, Operand(at)); // Signed comparison. |
| 1900 | __ TailCallRuntime(Runtime::kThrowStackOverflow); |
| 1901 | __ bind(&done); |
| 1902 | } |
| 1903 | |
| 1904 | // ----------- S t a t e ------------- |
| 1905 | // -- a1 : target |
| 1906 | // -- a0 : args (a FixedArray built from argumentsList) |
| 1907 | // -- a2 : len (number of elements to push from args) |
| 1908 | // -- a3 : new.target (checked to be constructor or undefined) |
| 1909 | // -- sp[0] : thisArgument |
| 1910 | // ----------------------------------- |
| 1911 | |
| 1912 | // Push arguments onto the stack (thisArgument is already on the stack). |
| 1913 | { |
| 1914 | __ mov(t0, zero_reg); |
| 1915 | Label done, loop; |
| 1916 | __ bind(&loop); |
| 1917 | __ Branch(&done, eq, t0, Operand(a2)); |
| 1918 | __ sll(at, t0, kPointerSizeLog2); |
| 1919 | __ Addu(at, a0, at); |
| 1920 | __ lw(at, FieldMemOperand(at, FixedArray::kHeaderSize)); |
| 1921 | __ Push(at); |
| 1922 | __ Addu(t0, t0, Operand(1)); |
| 1923 | __ Branch(&loop); |
| 1924 | __ bind(&done); |
| 1925 | __ Move(a0, t0); |
| 1926 | } |
| 1927 | |
| 1928 | // Dispatch to Call or Construct depending on whether new.target is undefined. |
| 1929 | { |
| 1930 | Label construct; |
| 1931 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 1932 | __ Branch(&construct, ne, a3, Operand(at)); |
| 1933 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
| 1934 | __ bind(&construct); |
| 1935 | __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
| 1936 | } |
| 1937 | } |
| 1938 | |
| 1939 | |
| 1940 | // static |
| 1941 | void Builtins::Generate_CallFunction(MacroAssembler* masm, |
| 1942 | ConvertReceiverMode mode) { |
| 1943 | // ----------- S t a t e ------------- |
| 1944 | // -- a0 : the number of arguments (not including the receiver) |
| 1945 | // -- a1 : the function to call (checked to be a JSFunction) |
| 1946 | // ----------------------------------- |
| 1947 | __ AssertFunction(a1); |
| 1948 | |
| 1949 | // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList) |
| 1950 | // Check that the function is not a "classConstructor". |
| 1951 | Label class_constructor; |
| 1952 | __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 1953 | __ lbu(a3, FieldMemOperand(a2, SharedFunctionInfo::kFunctionKindByteOffset)); |
| 1954 | __ And(at, a3, Operand(SharedFunctionInfo::kClassConstructorBitsWithinByte)); |
| 1955 | __ Branch(&class_constructor, ne, at, Operand(zero_reg)); |
| 1956 | |
| 1957 | // Enter the context of the function; ToObject has to run in the function |
| 1958 | // context, and we also need to take the global proxy from the function |
| 1959 | // context in case of conversion. |
| 1960 | STATIC_ASSERT(SharedFunctionInfo::kNativeByteOffset == |
| 1961 | SharedFunctionInfo::kStrictModeByteOffset); |
| 1962 | __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 1963 | // We need to convert the receiver for non-native sloppy mode functions. |
| 1964 | Label done_convert; |
| 1965 | __ lbu(a3, FieldMemOperand(a2, SharedFunctionInfo::kNativeByteOffset)); |
| 1966 | __ And(at, a3, Operand((1 << SharedFunctionInfo::kNativeBitWithinByte) | |
| 1967 | (1 << SharedFunctionInfo::kStrictModeBitWithinByte))); |
| 1968 | __ Branch(&done_convert, ne, at, Operand(zero_reg)); |
| 1969 | { |
| 1970 | // ----------- S t a t e ------------- |
| 1971 | // -- a0 : the number of arguments (not including the receiver) |
| 1972 | // -- a1 : the function to call (checked to be a JSFunction) |
| 1973 | // -- a2 : the shared function info. |
| 1974 | // -- cp : the function context. |
| 1975 | // ----------------------------------- |
| 1976 | |
| 1977 | if (mode == ConvertReceiverMode::kNullOrUndefined) { |
| 1978 | // Patch receiver to global proxy. |
| 1979 | __ LoadGlobalProxy(a3); |
| 1980 | } else { |
| 1981 | Label convert_to_object, convert_receiver; |
| 1982 | __ sll(at, a0, kPointerSizeLog2); |
| 1983 | __ addu(at, sp, at); |
| 1984 | __ lw(a3, MemOperand(at)); |
| 1985 | __ JumpIfSmi(a3, &convert_to_object); |
| 1986 | STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| 1987 | __ GetObjectType(a3, t0, t0); |
| 1988 | __ Branch(&done_convert, hs, t0, Operand(FIRST_JS_RECEIVER_TYPE)); |
| 1989 | if (mode != ConvertReceiverMode::kNotNullOrUndefined) { |
| 1990 | Label convert_global_proxy; |
| 1991 | __ JumpIfRoot(a3, Heap::kUndefinedValueRootIndex, |
| 1992 | &convert_global_proxy); |
| 1993 | __ JumpIfNotRoot(a3, Heap::kNullValueRootIndex, &convert_to_object); |
| 1994 | __ bind(&convert_global_proxy); |
| 1995 | { |
| 1996 | // Patch receiver to global proxy. |
| 1997 | __ LoadGlobalProxy(a3); |
| 1998 | } |
| 1999 | __ Branch(&convert_receiver); |
| 2000 | } |
| 2001 | __ bind(&convert_to_object); |
| 2002 | { |
| 2003 | // Convert receiver using ToObject. |
| 2004 | // TODO(bmeurer): Inline the allocation here to avoid building the frame |
| 2005 | // in the fast case? (fall back to AllocateInNewSpace?) |
| 2006 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 2007 | __ sll(a0, a0, kSmiTagSize); // Smi tagged. |
| 2008 | __ Push(a0, a1); |
| 2009 | __ mov(a0, a3); |
| 2010 | ToObjectStub stub(masm->isolate()); |
| 2011 | __ CallStub(&stub); |
| 2012 | __ mov(a3, v0); |
| 2013 | __ Pop(a0, a1); |
| 2014 | __ sra(a0, a0, kSmiTagSize); // Un-tag. |
| 2015 | } |
| 2016 | __ lw(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 2017 | __ bind(&convert_receiver); |
| 2018 | } |
| 2019 | __ sll(at, a0, kPointerSizeLog2); |
| 2020 | __ addu(at, sp, at); |
| 2021 | __ sw(a3, MemOperand(at)); |
| 2022 | } |
| 2023 | __ bind(&done_convert); |
| 2024 | |
| 2025 | // ----------- S t a t e ------------- |
| 2026 | // -- a0 : the number of arguments (not including the receiver) |
| 2027 | // -- a1 : the function to call (checked to be a JSFunction) |
| 2028 | // -- a2 : the shared function info. |
| 2029 | // -- cp : the function context. |
| 2030 | // ----------------------------------- |
| 2031 | |
| 2032 | __ lw(a2, |
| 2033 | FieldMemOperand(a2, SharedFunctionInfo::kFormalParameterCountOffset)); |
| 2034 | __ sra(a2, a2, kSmiTagSize); // Un-tag. |
| 2035 | ParameterCount actual(a0); |
| 2036 | ParameterCount expected(a2); |
| 2037 | __ InvokeFunctionCode(a1, no_reg, expected, actual, JUMP_FUNCTION, |
| 2038 | CheckDebugStepCallWrapper()); |
| 2039 | |
| 2040 | // The function is a "classConstructor", need to raise an exception. |
| 2041 | __ bind(&class_constructor); |
| 2042 | { |
| 2043 | FrameScope frame(masm, StackFrame::INTERNAL); |
| 2044 | __ Push(a1); |
| 2045 | __ CallRuntime(Runtime::kThrowConstructorNonCallableError); |
| 2046 | } |
| 2047 | } |
| 2048 | |
| 2049 | |
| 2050 | // static |
| 2051 | void Builtins::Generate_CallBoundFunction(MacroAssembler* masm) { |
| 2052 | // ----------- S t a t e ------------- |
| 2053 | // -- a0 : the number of arguments (not including the receiver) |
| 2054 | // -- a1 : the function to call (checked to be a JSBoundFunction) |
| 2055 | // ----------------------------------- |
| 2056 | __ AssertBoundFunction(a1); |
| 2057 | |
| 2058 | // Patch the receiver to [[BoundThis]]. |
| 2059 | { |
| 2060 | __ lw(at, FieldMemOperand(a1, JSBoundFunction::kBoundThisOffset)); |
| 2061 | __ sll(t0, a0, kPointerSizeLog2); |
| 2062 | __ addu(t0, t0, sp); |
| 2063 | __ sw(at, MemOperand(t0)); |
| 2064 | } |
| 2065 | |
| 2066 | // Load [[BoundArguments]] into a2 and length of that into t0. |
| 2067 | __ lw(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset)); |
| 2068 | __ lw(t0, FieldMemOperand(a2, FixedArray::kLengthOffset)); |
| 2069 | __ SmiUntag(t0); |
| 2070 | |
| 2071 | // ----------- S t a t e ------------- |
| 2072 | // -- a0 : the number of arguments (not including the receiver) |
| 2073 | // -- a1 : the function to call (checked to be a JSBoundFunction) |
| 2074 | // -- a2 : the [[BoundArguments]] (implemented as FixedArray) |
| 2075 | // -- t0 : the number of [[BoundArguments]] |
| 2076 | // ----------------------------------- |
| 2077 | |
| 2078 | // Reserve stack space for the [[BoundArguments]]. |
| 2079 | { |
| 2080 | Label done; |
| 2081 | __ sll(t1, t0, kPointerSizeLog2); |
| 2082 | __ Subu(sp, sp, Operand(t1)); |
| 2083 | // Check the stack for overflow. We are not trying to catch interruptions |
| 2084 | // (i.e. debug break and preemption) here, so check the "real stack limit". |
| 2085 | __ LoadRoot(at, Heap::kRealStackLimitRootIndex); |
| 2086 | __ Branch(&done, gt, sp, Operand(at)); // Signed comparison. |
| 2087 | // Restore the stack pointer. |
| 2088 | __ Addu(sp, sp, Operand(t1)); |
| 2089 | { |
| 2090 | FrameScope scope(masm, StackFrame::MANUAL); |
| 2091 | __ EnterFrame(StackFrame::INTERNAL); |
| 2092 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 2093 | } |
| 2094 | __ bind(&done); |
| 2095 | } |
| 2096 | |
| 2097 | // Relocate arguments down the stack. |
| 2098 | { |
| 2099 | Label loop, done_loop; |
| 2100 | __ mov(t1, zero_reg); |
| 2101 | __ bind(&loop); |
| 2102 | __ Branch(&done_loop, gt, t1, Operand(a0)); |
| 2103 | __ sll(t2, t0, kPointerSizeLog2); |
| 2104 | __ addu(t2, t2, sp); |
| 2105 | __ lw(at, MemOperand(t2)); |
| 2106 | __ sll(t2, t1, kPointerSizeLog2); |
| 2107 | __ addu(t2, t2, sp); |
| 2108 | __ sw(at, MemOperand(t2)); |
| 2109 | __ Addu(t0, t0, Operand(1)); |
| 2110 | __ Addu(t1, t1, Operand(1)); |
| 2111 | __ Branch(&loop); |
| 2112 | __ bind(&done_loop); |
| 2113 | } |
| 2114 | |
| 2115 | // Copy [[BoundArguments]] to the stack (below the arguments). |
| 2116 | { |
| 2117 | Label loop, done_loop; |
| 2118 | __ lw(t0, FieldMemOperand(a2, FixedArray::kLengthOffset)); |
| 2119 | __ SmiUntag(t0); |
| 2120 | __ Addu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 2121 | __ bind(&loop); |
| 2122 | __ Subu(t0, t0, Operand(1)); |
| 2123 | __ Branch(&done_loop, lt, t0, Operand(zero_reg)); |
| 2124 | __ sll(t1, t0, kPointerSizeLog2); |
| 2125 | __ addu(t1, t1, a2); |
| 2126 | __ lw(at, MemOperand(t1)); |
| 2127 | __ sll(t1, a0, kPointerSizeLog2); |
| 2128 | __ addu(t1, t1, sp); |
| 2129 | __ sw(at, MemOperand(t1)); |
| 2130 | __ Addu(a0, a0, Operand(1)); |
| 2131 | __ Branch(&loop); |
| 2132 | __ bind(&done_loop); |
| 2133 | } |
| 2134 | |
| 2135 | // Call the [[BoundTargetFunction]] via the Call builtin. |
| 2136 | __ lw(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset)); |
| 2137 | __ li(at, Operand(ExternalReference(Builtins::kCall_ReceiverIsAny, |
| 2138 | masm->isolate()))); |
| 2139 | __ lw(at, MemOperand(at)); |
| 2140 | __ Addu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2141 | __ Jump(at); |
| 2142 | } |
| 2143 | |
| 2144 | |
| 2145 | // static |
| 2146 | void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) { |
| 2147 | // ----------- S t a t e ------------- |
| 2148 | // -- a0 : the number of arguments (not including the receiver) |
| 2149 | // -- a1 : the target to call (can be any Object). |
| 2150 | // ----------------------------------- |
| 2151 | |
| 2152 | Label non_callable, non_function, non_smi; |
| 2153 | __ JumpIfSmi(a1, &non_callable); |
| 2154 | __ bind(&non_smi); |
| 2155 | __ GetObjectType(a1, t1, t2); |
| 2156 | __ Jump(masm->isolate()->builtins()->CallFunction(mode), |
| 2157 | RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE)); |
| 2158 | __ Jump(masm->isolate()->builtins()->CallBoundFunction(), |
| 2159 | RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE)); |
| 2160 | __ Branch(&non_function, ne, t2, Operand(JS_PROXY_TYPE)); |
| 2161 | |
| 2162 | // 1. Runtime fallback for Proxy [[Call]]. |
| 2163 | __ Push(a1); |
| 2164 | // Increase the arguments size to include the pushed function and the |
| 2165 | // existing receiver on the stack. |
| 2166 | __ Addu(a0, a0, 2); |
| 2167 | // Tail-call to the runtime. |
| 2168 | __ JumpToExternalReference( |
| 2169 | ExternalReference(Runtime::kJSProxyCall, masm->isolate())); |
| 2170 | |
| 2171 | // 2. Call to something else, which might have a [[Call]] internal method (if |
| 2172 | // not we raise an exception). |
| 2173 | __ bind(&non_function); |
| 2174 | // Check if target has a [[Call]] internal method. |
| 2175 | __ lbu(t1, FieldMemOperand(t1, Map::kBitFieldOffset)); |
| 2176 | __ And(t1, t1, Operand(1 << Map::kIsCallable)); |
| 2177 | __ Branch(&non_callable, eq, t1, Operand(zero_reg)); |
| 2178 | // Overwrite the original receiver with the (original) target. |
| 2179 | __ sll(at, a0, kPointerSizeLog2); |
| 2180 | __ addu(at, sp, at); |
| 2181 | __ sw(a1, MemOperand(at)); |
| 2182 | // Let the "call_as_function_delegate" take care of the rest. |
| 2183 | __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, a1); |
| 2184 | __ Jump(masm->isolate()->builtins()->CallFunction( |
| 2185 | ConvertReceiverMode::kNotNullOrUndefined), |
| 2186 | RelocInfo::CODE_TARGET); |
| 2187 | |
| 2188 | // 3. Call to something that is not callable. |
| 2189 | __ bind(&non_callable); |
| 2190 | { |
| 2191 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 2192 | __ Push(a1); |
| 2193 | __ CallRuntime(Runtime::kThrowCalledNonCallable); |
| 2194 | } |
| 2195 | } |
| 2196 | |
| 2197 | |
| 2198 | // static |
| 2199 | void Builtins::Generate_ConstructFunction(MacroAssembler* masm) { |
| 2200 | // ----------- S t a t e ------------- |
| 2201 | // -- a0 : the number of arguments (not including the receiver) |
| 2202 | // -- a1 : the constructor to call (checked to be a JSFunction) |
| 2203 | // -- a3 : the new target (checked to be a constructor) |
| 2204 | // ----------------------------------- |
| 2205 | __ AssertFunction(a1); |
| 2206 | |
| 2207 | // Calling convention for function specific ConstructStubs require |
| 2208 | // a2 to contain either an AllocationSite or undefined. |
| 2209 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| 2210 | |
| 2211 | // Tail call to the function-specific construct stub (still in the caller |
| 2212 | // context at this point). |
| 2213 | __ lw(t0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 2214 | __ lw(t0, FieldMemOperand(t0, SharedFunctionInfo::kConstructStubOffset)); |
| 2215 | __ Addu(at, t0, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2216 | __ Jump(at); |
| 2217 | } |
| 2218 | |
| 2219 | |
| 2220 | // static |
| 2221 | void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) { |
| 2222 | // ----------- S t a t e ------------- |
| 2223 | // -- a0 : the number of arguments (not including the receiver) |
| 2224 | // -- a1 : the function to call (checked to be a JSBoundFunction) |
| 2225 | // -- a3 : the new target (checked to be a constructor) |
| 2226 | // ----------------------------------- |
| 2227 | __ AssertBoundFunction(a1); |
| 2228 | |
| 2229 | // Load [[BoundArguments]] into a2 and length of that into t0. |
| 2230 | __ lw(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset)); |
| 2231 | __ lw(t0, FieldMemOperand(a2, FixedArray::kLengthOffset)); |
| 2232 | __ SmiUntag(t0); |
| 2233 | |
| 2234 | // ----------- S t a t e ------------- |
| 2235 | // -- a0 : the number of arguments (not including the receiver) |
| 2236 | // -- a1 : the function to call (checked to be a JSBoundFunction) |
| 2237 | // -- a2 : the [[BoundArguments]] (implemented as FixedArray) |
| 2238 | // -- a3 : the new target (checked to be a constructor) |
| 2239 | // -- t0 : the number of [[BoundArguments]] |
| 2240 | // ----------------------------------- |
| 2241 | |
| 2242 | // Reserve stack space for the [[BoundArguments]]. |
| 2243 | { |
| 2244 | Label done; |
| 2245 | __ sll(t1, t0, kPointerSizeLog2); |
| 2246 | __ Subu(sp, sp, Operand(t1)); |
| 2247 | // Check the stack for overflow. We are not trying to catch interruptions |
| 2248 | // (i.e. debug break and preemption) here, so check the "real stack limit". |
| 2249 | __ LoadRoot(at, Heap::kRealStackLimitRootIndex); |
| 2250 | __ Branch(&done, gt, sp, Operand(at)); // Signed comparison. |
| 2251 | // Restore the stack pointer. |
| 2252 | __ Addu(sp, sp, Operand(t1)); |
| 2253 | { |
| 2254 | FrameScope scope(masm, StackFrame::MANUAL); |
| 2255 | __ EnterFrame(StackFrame::INTERNAL); |
| 2256 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 2257 | } |
| 2258 | __ bind(&done); |
| 2259 | } |
| 2260 | |
| 2261 | // Relocate arguments down the stack. |
| 2262 | { |
| 2263 | Label loop, done_loop; |
| 2264 | __ mov(t1, zero_reg); |
| 2265 | __ bind(&loop); |
| 2266 | __ Branch(&done_loop, ge, t1, Operand(a0)); |
| 2267 | __ sll(t2, t0, kPointerSizeLog2); |
| 2268 | __ addu(t2, t2, sp); |
| 2269 | __ lw(at, MemOperand(t2)); |
| 2270 | __ sll(t2, t1, kPointerSizeLog2); |
| 2271 | __ addu(t2, t2, sp); |
| 2272 | __ sw(at, MemOperand(t2)); |
| 2273 | __ Addu(t0, t0, Operand(1)); |
| 2274 | __ Addu(t1, t1, Operand(1)); |
| 2275 | __ Branch(&loop); |
| 2276 | __ bind(&done_loop); |
| 2277 | } |
| 2278 | |
| 2279 | // Copy [[BoundArguments]] to the stack (below the arguments). |
| 2280 | { |
| 2281 | Label loop, done_loop; |
| 2282 | __ lw(t0, FieldMemOperand(a2, FixedArray::kLengthOffset)); |
| 2283 | __ SmiUntag(t0); |
| 2284 | __ Addu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 2285 | __ bind(&loop); |
| 2286 | __ Subu(t0, t0, Operand(1)); |
| 2287 | __ Branch(&done_loop, lt, t0, Operand(zero_reg)); |
| 2288 | __ sll(t1, t0, kPointerSizeLog2); |
| 2289 | __ addu(t1, t1, a2); |
| 2290 | __ lw(at, MemOperand(t1)); |
| 2291 | __ sll(t1, a0, kPointerSizeLog2); |
| 2292 | __ addu(t1, t1, sp); |
| 2293 | __ sw(at, MemOperand(t1)); |
| 2294 | __ Addu(a0, a0, Operand(1)); |
| 2295 | __ Branch(&loop); |
| 2296 | __ bind(&done_loop); |
| 2297 | } |
| 2298 | |
| 2299 | // Patch new.target to [[BoundTargetFunction]] if new.target equals target. |
| 2300 | { |
| 2301 | Label skip_load; |
| 2302 | __ Branch(&skip_load, ne, a1, Operand(a3)); |
| 2303 | __ lw(a3, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset)); |
| 2304 | __ bind(&skip_load); |
| 2305 | } |
| 2306 | |
| 2307 | // Construct the [[BoundTargetFunction]] via the Construct builtin. |
| 2308 | __ lw(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset)); |
| 2309 | __ li(at, Operand(ExternalReference(Builtins::kConstruct, masm->isolate()))); |
| 2310 | __ lw(at, MemOperand(at)); |
| 2311 | __ Addu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2312 | __ Jump(at); |
| 2313 | } |
| 2314 | |
| 2315 | |
| 2316 | // static |
| 2317 | void Builtins::Generate_ConstructProxy(MacroAssembler* masm) { |
| 2318 | // ----------- S t a t e ------------- |
| 2319 | // -- a0 : the number of arguments (not including the receiver) |
| 2320 | // -- a1 : the constructor to call (checked to be a JSProxy) |
| 2321 | // -- a3 : the new target (either the same as the constructor or |
| 2322 | // the JSFunction on which new was invoked initially) |
| 2323 | // ----------------------------------- |
| 2324 | |
| 2325 | // Call into the Runtime for Proxy [[Construct]]. |
| 2326 | __ Push(a1, a3); |
| 2327 | // Include the pushed new_target, constructor and the receiver. |
| 2328 | __ Addu(a0, a0, Operand(3)); |
| 2329 | // Tail-call to the runtime. |
| 2330 | __ JumpToExternalReference( |
| 2331 | ExternalReference(Runtime::kJSProxyConstruct, masm->isolate())); |
| 2332 | } |
| 2333 | |
| 2334 | |
| 2335 | // static |
| 2336 | void Builtins::Generate_Construct(MacroAssembler* masm) { |
| 2337 | // ----------- S t a t e ------------- |
| 2338 | // -- a0 : the number of arguments (not including the receiver) |
| 2339 | // -- a1 : the constructor to call (can be any Object) |
| 2340 | // -- a3 : the new target (either the same as the constructor or |
| 2341 | // the JSFunction on which new was invoked initially) |
| 2342 | // ----------------------------------- |
| 2343 | |
| 2344 | // Check if target is a Smi. |
| 2345 | Label non_constructor; |
| 2346 | __ JumpIfSmi(a1, &non_constructor); |
| 2347 | |
| 2348 | // Dispatch based on instance type. |
| 2349 | __ lw(t1, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 2350 | __ lbu(t2, FieldMemOperand(t1, Map::kInstanceTypeOffset)); |
| 2351 | __ Jump(masm->isolate()->builtins()->ConstructFunction(), |
| 2352 | RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE)); |
| 2353 | |
| 2354 | // Check if target has a [[Construct]] internal method. |
| 2355 | __ lbu(t3, FieldMemOperand(t1, Map::kBitFieldOffset)); |
| 2356 | __ And(t3, t3, Operand(1 << Map::kIsConstructor)); |
| 2357 | __ Branch(&non_constructor, eq, t3, Operand(zero_reg)); |
| 2358 | |
| 2359 | // Only dispatch to bound functions after checking whether they are |
| 2360 | // constructors. |
| 2361 | __ Jump(masm->isolate()->builtins()->ConstructBoundFunction(), |
| 2362 | RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE)); |
| 2363 | |
| 2364 | // Only dispatch to proxies after checking whether they are constructors. |
| 2365 | __ Jump(masm->isolate()->builtins()->ConstructProxy(), RelocInfo::CODE_TARGET, |
| 2366 | eq, t2, Operand(JS_PROXY_TYPE)); |
| 2367 | |
| 2368 | // Called Construct on an exotic Object with a [[Construct]] internal method. |
| 2369 | { |
| 2370 | // Overwrite the original receiver with the (original) target. |
| 2371 | __ sll(at, a0, kPointerSizeLog2); |
| 2372 | __ addu(at, sp, at); |
| 2373 | __ sw(a1, MemOperand(at)); |
| 2374 | // Let the "call_as_constructor_delegate" take care of the rest. |
| 2375 | __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, a1); |
| 2376 | __ Jump(masm->isolate()->builtins()->CallFunction(), |
| 2377 | RelocInfo::CODE_TARGET); |
| 2378 | } |
| 2379 | |
| 2380 | // Called Construct on an Object that doesn't have a [[Construct]] internal |
| 2381 | // method. |
| 2382 | __ bind(&non_constructor); |
| 2383 | __ Jump(masm->isolate()->builtins()->ConstructedNonConstructable(), |
| 2384 | RelocInfo::CODE_TARGET); |
| 2385 | } |
| 2386 | |
| 2387 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2388 | void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2389 | // State setup as expected by MacroAssembler::InvokePrologue. |
| 2390 | // ----------- S t a t e ------------- |
| 2391 | // -- a0: actual arguments count |
| 2392 | // -- a1: function (passed through to callee) |
| 2393 | // -- a2: expected arguments count |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2394 | // -- a3: new target (passed through to callee) |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2395 | // ----------------------------------- |
| 2396 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2397 | Label invoke, dont_adapt_arguments, stack_overflow; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2398 | |
| 2399 | Label enough, too_few; |
| 2400 | __ Branch(&dont_adapt_arguments, eq, |
| 2401 | a2, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel)); |
| 2402 | // We use Uless as the number of argument should always be greater than 0. |
| 2403 | __ Branch(&too_few, Uless, a0, Operand(a2)); |
| 2404 | |
| 2405 | { // Enough parameters: actual >= expected. |
| 2406 | // a0: actual number of arguments as a smi |
| 2407 | // a1: function |
| 2408 | // a2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2409 | // a3: new target (passed through to callee) |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2410 | __ bind(&enough); |
| 2411 | EnterArgumentsAdaptorFrame(masm); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2412 | ArgumentAdaptorStackCheck(masm, &stack_overflow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2413 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2414 | // Calculate copy start address into a0 and copy end address into t1. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2415 | __ sll(a0, a0, kPointerSizeLog2 - kSmiTagSize); |
| 2416 | __ Addu(a0, fp, a0); |
| 2417 | // Adjust for return address and receiver. |
| 2418 | __ Addu(a0, a0, Operand(2 * kPointerSize)); |
| 2419 | // Compute copy end address. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2420 | __ sll(t1, a2, kPointerSizeLog2); |
| 2421 | __ subu(t1, a0, t1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2422 | |
| 2423 | // Copy the arguments (including the receiver) to the new stack frame. |
| 2424 | // a0: copy start address |
| 2425 | // a1: function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2426 | // a2: expected number of arguments |
| 2427 | // a3: new target (passed through to callee) |
| 2428 | // t1: copy end address |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2429 | |
| 2430 | Label copy; |
| 2431 | __ bind(©); |
| 2432 | __ lw(t0, MemOperand(a0)); |
| 2433 | __ push(t0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2434 | __ Branch(USE_DELAY_SLOT, ©, ne, a0, Operand(t1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2435 | __ addiu(a0, a0, -kPointerSize); // In delay slot. |
| 2436 | |
| 2437 | __ jmp(&invoke); |
| 2438 | } |
| 2439 | |
| 2440 | { // Too few parameters: Actual < expected. |
| 2441 | __ bind(&too_few); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2442 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2443 | // If the function is strong we need to throw an error. |
| 2444 | Label no_strong_error; |
| 2445 | __ lw(t1, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 2446 | __ lw(t2, FieldMemOperand(t1, SharedFunctionInfo::kCompilerHintsOffset)); |
| 2447 | __ And(t3, t2, Operand(1 << (SharedFunctionInfo::kStrongModeFunction + |
| 2448 | kSmiTagSize))); |
| 2449 | __ Branch(&no_strong_error, eq, t3, Operand(zero_reg)); |
| 2450 | |
| 2451 | // What we really care about is the required number of arguments. |
| 2452 | __ lw(t2, FieldMemOperand(t1, SharedFunctionInfo::kLengthOffset)); |
| 2453 | __ SmiUntag(t2); |
| 2454 | __ Branch(&no_strong_error, ge, a0, Operand(t2)); |
| 2455 | |
| 2456 | { |
| 2457 | FrameScope frame(masm, StackFrame::MANUAL); |
| 2458 | EnterArgumentsAdaptorFrame(masm); |
| 2459 | __ CallRuntime(Runtime::kThrowStrongModeTooFewArguments); |
| 2460 | } |
| 2461 | |
| 2462 | __ bind(&no_strong_error); |
| 2463 | EnterArgumentsAdaptorFrame(masm); |
| 2464 | ArgumentAdaptorStackCheck(masm, &stack_overflow); |
| 2465 | |
| 2466 | // Calculate copy start address into a0 and copy end address into t3. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2467 | // a0: actual number of arguments as a smi |
| 2468 | // a1: function |
| 2469 | // a2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2470 | // a3: new target (passed through to callee) |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2471 | __ sll(a0, a0, kPointerSizeLog2 - kSmiTagSize); |
| 2472 | __ Addu(a0, fp, a0); |
| 2473 | // Adjust for return address and receiver. |
| 2474 | __ Addu(a0, a0, Operand(2 * kPointerSize)); |
| 2475 | // Compute copy end address. Also adjust for return address. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2476 | __ Addu(t3, fp, kPointerSize); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2477 | |
| 2478 | // Copy the arguments (including the receiver) to the new stack frame. |
| 2479 | // a0: copy start address |
| 2480 | // a1: function |
| 2481 | // a2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2482 | // a3: new target (passed through to callee) |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2483 | // t3: copy end address |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2484 | Label copy; |
| 2485 | __ bind(©); |
| 2486 | __ lw(t0, MemOperand(a0)); // Adjusted above for return addr and receiver. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2487 | __ Subu(sp, sp, kPointerSize); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2488 | __ Subu(a0, a0, kPointerSize); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2489 | __ Branch(USE_DELAY_SLOT, ©, ne, a0, Operand(t3)); |
| 2490 | __ sw(t0, MemOperand(sp)); // In the delay slot. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2491 | |
| 2492 | // Fill the remaining expected arguments with undefined. |
| 2493 | // a1: function |
| 2494 | // a2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2495 | // a3: new target (passed through to callee) |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2496 | __ LoadRoot(t0, Heap::kUndefinedValueRootIndex); |
| 2497 | __ sll(t2, a2, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2498 | __ Subu(t1, fp, Operand(t2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2499 | // Adjust for frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2500 | __ Subu(t1, t1, Operand(StandardFrameConstants::kFixedFrameSizeFromFp + |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2501 | 2 * kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2502 | |
| 2503 | Label fill; |
| 2504 | __ bind(&fill); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2505 | __ Subu(sp, sp, kPointerSize); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2506 | __ Branch(USE_DELAY_SLOT, &fill, ne, sp, Operand(t1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2507 | __ sw(t0, MemOperand(sp)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2508 | } |
| 2509 | |
| 2510 | // Call the entry point. |
| 2511 | __ bind(&invoke); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2512 | __ mov(a0, a2); |
| 2513 | // a0 : expected number of arguments |
| 2514 | // a1 : function (passed through to callee) |
| 2515 | // a3 : new target (passed through to callee) |
| 2516 | __ lw(t0, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); |
| 2517 | __ Call(t0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2518 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2519 | // Store offset of return address for deoptimizer. |
| 2520 | masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset()); |
| 2521 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2522 | // Exit frame and return. |
| 2523 | LeaveArgumentsAdaptorFrame(masm); |
| 2524 | __ Ret(); |
| 2525 | |
| 2526 | |
| 2527 | // ------------------------------------------- |
| 2528 | // Don't adapt arguments. |
| 2529 | // ------------------------------------------- |
| 2530 | __ bind(&dont_adapt_arguments); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2531 | __ lw(t0, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); |
| 2532 | __ Jump(t0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2533 | |
| 2534 | __ bind(&stack_overflow); |
| 2535 | { |
| 2536 | FrameScope frame(masm, StackFrame::MANUAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2537 | __ CallRuntime(Runtime::kThrowStackOverflow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2538 | __ break_(0xCC); |
| 2539 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2540 | } |
| 2541 | |
| 2542 | |
| 2543 | #undef __ |
| 2544 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 2545 | } // namespace internal |
| 2546 | } // namespace v8 |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 2547 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 2548 | #endif // V8_TARGET_ARCH_MIPS |