Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #if V8_TARGET_ARCH_MIPS64 |
| 6 | |
| 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 | |
| 13 | namespace v8 { |
| 14 | namespace internal { |
| 15 | |
| 16 | |
| 17 | #define __ ACCESS_MASM(masm) |
| 18 | |
| 19 | |
| 20 | void Builtins::Generate_Adaptor(MacroAssembler* masm, |
| 21 | CFunctionId id, |
| 22 | BuiltinExtraArguments extra_args) { |
| 23 | // ----------- S t a t e ------------- |
| 24 | // -- a0 : number of arguments excluding receiver |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 25 | // -- a1 : target |
| 26 | // -- a3 : new.target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 27 | // -- sp[0] : last argument |
| 28 | // -- ... |
| 29 | // -- sp[8 * (argc - 1)] : first argument |
| 30 | // -- sp[8 * agrc] : receiver |
| 31 | // ----------------------------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 32 | __ AssertFunction(a1); |
| 33 | |
| 34 | // Make sure we operate in the context of the called function (for example |
| 35 | // ConstructStubs implemented in C++ will be run in the context of the caller |
| 36 | // instead of the callee, due to the way that [[Construct]] is defined for |
| 37 | // ordinary functions). |
| 38 | __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 39 | |
| 40 | // Insert extra arguments. |
| 41 | int num_extra_args = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 42 | switch (extra_args) { |
| 43 | case BuiltinExtraArguments::kTarget: |
| 44 | __ Push(a1); |
| 45 | ++num_extra_args; |
| 46 | break; |
| 47 | case BuiltinExtraArguments::kNewTarget: |
| 48 | __ Push(a3); |
| 49 | ++num_extra_args; |
| 50 | break; |
| 51 | case BuiltinExtraArguments::kTargetAndNewTarget: |
| 52 | __ Push(a1, a3); |
| 53 | num_extra_args += 2; |
| 54 | break; |
| 55 | case BuiltinExtraArguments::kNone: |
| 56 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 57 | } |
| 58 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 59 | // JumpToExternalReference expects a0 to contain the number of arguments |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 60 | // including the receiver and the extra arguments. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 61 | __ Daddu(a0, a0, num_extra_args + 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 62 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 63 | __ JumpToExternalReference(ExternalReference(id, masm->isolate())); |
| 64 | } |
| 65 | |
| 66 | |
| 67 | // Load the built-in InternalArray function from the current context. |
| 68 | static void GenerateLoadInternalArrayFunction(MacroAssembler* masm, |
| 69 | Register result) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 70 | // Load the InternalArray function from the native context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 71 | __ LoadNativeContextSlot(Context::INTERNAL_ARRAY_FUNCTION_INDEX, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | |
| 75 | // Load the built-in Array function from the current context. |
| 76 | static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 77 | // Load the Array function from the native context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 78 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | |
| 82 | void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) { |
| 83 | // ----------- S t a t e ------------- |
| 84 | // -- a0 : number of arguments |
| 85 | // -- ra : return address |
| 86 | // -- sp[...]: constructor arguments |
| 87 | // ----------------------------------- |
| 88 | Label generic_array_code, one_or_more_arguments, two_or_more_arguments; |
| 89 | |
| 90 | // Get the InternalArray function. |
| 91 | GenerateLoadInternalArrayFunction(masm, a1); |
| 92 | |
| 93 | if (FLAG_debug_code) { |
| 94 | // Initial map for the builtin InternalArray functions should be maps. |
| 95 | __ ld(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); |
| 96 | __ SmiTst(a2, a4); |
| 97 | __ Assert(ne, kUnexpectedInitialMapForInternalArrayFunction, |
| 98 | a4, Operand(zero_reg)); |
| 99 | __ GetObjectType(a2, a3, a4); |
| 100 | __ Assert(eq, kUnexpectedInitialMapForInternalArrayFunction, |
| 101 | a4, Operand(MAP_TYPE)); |
| 102 | } |
| 103 | |
| 104 | // Run the native code for the InternalArray function called as a normal |
| 105 | // function. |
| 106 | // Tail call a stub. |
| 107 | InternalArrayConstructorStub stub(masm->isolate()); |
| 108 | __ TailCallStub(&stub); |
| 109 | } |
| 110 | |
| 111 | |
| 112 | void Builtins::Generate_ArrayCode(MacroAssembler* masm) { |
| 113 | // ----------- S t a t e ------------- |
| 114 | // -- a0 : number of arguments |
| 115 | // -- ra : return address |
| 116 | // -- sp[...]: constructor arguments |
| 117 | // ----------------------------------- |
| 118 | Label generic_array_code; |
| 119 | |
| 120 | // Get the Array function. |
| 121 | GenerateLoadArrayFunction(masm, a1); |
| 122 | |
| 123 | if (FLAG_debug_code) { |
| 124 | // Initial map for the builtin Array functions should be maps. |
| 125 | __ ld(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); |
| 126 | __ SmiTst(a2, a4); |
| 127 | __ Assert(ne, kUnexpectedInitialMapForArrayFunction1, |
| 128 | a4, Operand(zero_reg)); |
| 129 | __ GetObjectType(a2, a3, a4); |
| 130 | __ Assert(eq, kUnexpectedInitialMapForArrayFunction2, |
| 131 | a4, Operand(MAP_TYPE)); |
| 132 | } |
| 133 | |
| 134 | // Run the native code for the Array function called as a normal function. |
| 135 | // Tail call a stub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 136 | __ mov(a3, a1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 137 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| 138 | ArrayConstructorStub stub(masm->isolate()); |
| 139 | __ TailCallStub(&stub); |
| 140 | } |
| 141 | |
| 142 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 143 | // static |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 144 | void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) { |
| 145 | // ----------- S t a t e ------------- |
| 146 | // -- a0 : number of arguments |
| 147 | // -- ra : return address |
| 148 | // -- sp[(argc - n) * 8] : arg[n] (zero-based) |
| 149 | // -- sp[(argc + 1) * 8] : receiver |
| 150 | // ----------------------------------- |
| 151 | Condition const cc = (kind == MathMaxMinKind::kMin) ? ge : le; |
| 152 | Heap::RootListIndex const root_index = |
| 153 | (kind == MathMaxMinKind::kMin) ? Heap::kInfinityValueRootIndex |
| 154 | : Heap::kMinusInfinityValueRootIndex; |
| 155 | DoubleRegister const reg = (kind == MathMaxMinKind::kMin) ? f2 : f0; |
| 156 | |
| 157 | // Load the accumulator with the default return value (either -Infinity or |
| 158 | // +Infinity), with the tagged value in a1 and the double value in f0. |
| 159 | __ LoadRoot(a1, root_index); |
| 160 | __ ldc1(f0, FieldMemOperand(a1, HeapNumber::kValueOffset)); |
| 161 | __ mov(a3, a0); |
| 162 | |
| 163 | Label done_loop, loop; |
| 164 | __ bind(&loop); |
| 165 | { |
| 166 | // Check if all parameters done. |
| 167 | __ Dsubu(a0, a0, Operand(1)); |
| 168 | __ Branch(&done_loop, lt, a0, Operand(zero_reg)); |
| 169 | |
| 170 | // Load the next parameter tagged value into a2. |
| 171 | __ Dlsa(at, sp, a0, kPointerSizeLog2); |
| 172 | __ ld(a2, MemOperand(at)); |
| 173 | |
| 174 | // Load the double value of the parameter into f2, maybe converting the |
| 175 | // parameter to a number first using the ToNumberStub if necessary. |
| 176 | Label convert, convert_smi, convert_number, done_convert; |
| 177 | __ bind(&convert); |
| 178 | __ JumpIfSmi(a2, &convert_smi); |
| 179 | __ ld(a4, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 180 | __ JumpIfRoot(a4, Heap::kHeapNumberMapRootIndex, &convert_number); |
| 181 | { |
| 182 | // Parameter is not a Number, use the ToNumberStub to convert it. |
| 183 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 184 | __ SmiTag(a0); |
| 185 | __ SmiTag(a3); |
| 186 | __ Push(a0, a1, a3); |
| 187 | __ mov(a0, a2); |
| 188 | ToNumberStub stub(masm->isolate()); |
| 189 | __ CallStub(&stub); |
| 190 | __ mov(a2, v0); |
| 191 | __ Pop(a0, a1, a3); |
| 192 | { |
| 193 | // Restore the double accumulator value (f0). |
| 194 | Label restore_smi, done_restore; |
| 195 | __ JumpIfSmi(a1, &restore_smi); |
| 196 | __ ldc1(f0, FieldMemOperand(a1, HeapNumber::kValueOffset)); |
| 197 | __ jmp(&done_restore); |
| 198 | __ bind(&restore_smi); |
| 199 | __ SmiToDoubleFPURegister(a1, f0, a4); |
| 200 | __ bind(&done_restore); |
| 201 | } |
| 202 | __ SmiUntag(a3); |
| 203 | __ SmiUntag(a0); |
| 204 | } |
| 205 | __ jmp(&convert); |
| 206 | __ bind(&convert_number); |
| 207 | __ ldc1(f2, FieldMemOperand(a2, HeapNumber::kValueOffset)); |
| 208 | __ jmp(&done_convert); |
| 209 | __ bind(&convert_smi); |
| 210 | __ SmiToDoubleFPURegister(a2, f2, a4); |
| 211 | __ bind(&done_convert); |
| 212 | |
| 213 | // Perform the actual comparison with the accumulator value on the left hand |
| 214 | // side (f0) and the next parameter value on the right hand side (f2). |
| 215 | Label compare_equal, compare_nan, compare_swap; |
| 216 | __ BranchF(&compare_equal, &compare_nan, eq, f0, f2); |
| 217 | __ BranchF(&compare_swap, nullptr, cc, f0, f2); |
| 218 | __ Branch(&loop); |
| 219 | |
| 220 | // Left and right hand side are equal, check for -0 vs. +0. |
| 221 | __ bind(&compare_equal); |
| 222 | __ FmoveHigh(a4, reg); |
| 223 | // Make a4 unsigned. |
| 224 | __ dsll32(a4, a4, 0); |
| 225 | __ Branch(&loop, ne, a4, Operand(0x8000000000000000)); |
| 226 | |
| 227 | // Result is on the right hand side. |
| 228 | __ bind(&compare_swap); |
| 229 | __ mov_d(f0, f2); |
| 230 | __ mov(a1, a2); |
| 231 | __ jmp(&loop); |
| 232 | |
| 233 | // At least one side is NaN, which means that the result will be NaN too. |
| 234 | __ bind(&compare_nan); |
| 235 | __ LoadRoot(a1, Heap::kNanValueRootIndex); |
| 236 | __ ldc1(f0, FieldMemOperand(a1, HeapNumber::kValueOffset)); |
| 237 | __ jmp(&loop); |
| 238 | } |
| 239 | |
| 240 | __ bind(&done_loop); |
| 241 | __ Dlsa(sp, sp, a3, kPointerSizeLog2); |
| 242 | __ mov(v0, a1); |
| 243 | __ DropAndRet(1); |
| 244 | } |
| 245 | |
| 246 | // static |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 247 | void Builtins::Generate_NumberConstructor(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 248 | // ----------- S t a t e ------------- |
| 249 | // -- a0 : number of arguments |
| 250 | // -- a1 : constructor function |
| 251 | // -- ra : return address |
| 252 | // -- sp[(argc - n - 1) * 8] : arg[n] (zero based) |
| 253 | // -- sp[argc * 8] : receiver |
| 254 | // ----------------------------------- |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 255 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 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 | __ Dsubu(a0, a0, Operand(1)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 262 | __ Dlsa(sp, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 263 | __ ld(a0, MemOperand(sp)); |
| 264 | __ Drop(2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 265 | } |
| 266 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 267 | // 2a. Convert first argument to number. |
| 268 | ToNumberStub stub(masm->isolate()); |
| 269 | __ TailCallStub(&stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 270 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 271 | // 2b. No arguments, return +0. |
| 272 | __ bind(&no_arguments); |
| 273 | __ Move(v0, Smi::FromInt(0)); |
| 274 | __ DropAndRet(1); |
| 275 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 276 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 277 | |
| 278 | void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 279 | // ----------- S t a t e ------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 280 | // -- a0 : number of arguments |
| 281 | // -- a1 : constructor function |
| 282 | // -- a3 : new target |
| 283 | // -- ra : return address |
| 284 | // -- sp[(argc - n - 1) * 8] : arg[n] (zero based) |
| 285 | // -- sp[argc * 8] : receiver |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 286 | // ----------------------------------- |
| 287 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 288 | // 1. Make sure we operate in the context of the called function. |
| 289 | __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 290 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 291 | // 2. Load the first argument into a0 and get rid of the rest (including the |
| 292 | // receiver). |
| 293 | { |
| 294 | Label no_arguments, done; |
| 295 | __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); |
| 296 | __ Dsubu(a0, a0, Operand(1)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 297 | __ Dlsa(sp, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 298 | __ ld(a0, MemOperand(sp)); |
| 299 | __ Drop(2); |
| 300 | __ jmp(&done); |
| 301 | __ bind(&no_arguments); |
| 302 | __ Move(a0, Smi::FromInt(0)); |
| 303 | __ Drop(1); |
| 304 | __ bind(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 305 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 306 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 307 | // 3. Make sure a0 is a number. |
| 308 | { |
| 309 | Label done_convert; |
| 310 | __ JumpIfSmi(a0, &done_convert); |
| 311 | __ GetObjectType(a0, a2, a2); |
| 312 | __ Branch(&done_convert, eq, t0, Operand(HEAP_NUMBER_TYPE)); |
| 313 | { |
| 314 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 315 | __ Push(a1, a3); |
| 316 | ToNumberStub stub(masm->isolate()); |
| 317 | __ CallStub(&stub); |
| 318 | __ Move(a0, v0); |
| 319 | __ Pop(a1, a3); |
| 320 | } |
| 321 | __ bind(&done_convert); |
| 322 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 323 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 324 | // 4. Check if new target and constructor differ. |
| 325 | Label new_object; |
| 326 | __ Branch(&new_object, ne, a1, Operand(a3)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 327 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 328 | // 5. Allocate a JSValue wrapper for the number. |
| 329 | __ AllocateJSValue(v0, a1, a0, a2, t0, &new_object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 330 | __ Ret(); |
| 331 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 332 | // 6. Fallback to the runtime to create new object. |
| 333 | __ bind(&new_object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 334 | { |
| 335 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 336 | __ Push(a0); |
| 337 | FastNewObjectStub stub(masm->isolate()); |
| 338 | __ CallStub(&stub); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 339 | __ Pop(a0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 340 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 341 | __ Ret(USE_DELAY_SLOT); |
| 342 | __ sd(a0, FieldMemOperand(v0, JSValue::kValueOffset)); // In delay slot. |
| 343 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 344 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 345 | |
| 346 | // static |
| 347 | void Builtins::Generate_StringConstructor(MacroAssembler* masm) { |
| 348 | // ----------- S t a t e ------------- |
| 349 | // -- a0 : number of arguments |
| 350 | // -- a1 : constructor function |
| 351 | // -- ra : return address |
| 352 | // -- sp[(argc - n - 1) * 8] : arg[n] (zero based) |
| 353 | // -- sp[argc * 8] : receiver |
| 354 | // ----------------------------------- |
| 355 | |
| 356 | // 1. Load the first argument into a0 and get rid of the rest (including the |
| 357 | // receiver). |
| 358 | Label no_arguments; |
| 359 | { |
| 360 | __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); |
| 361 | __ Dsubu(a0, a0, Operand(1)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 362 | __ Dlsa(sp, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 363 | __ ld(a0, MemOperand(sp)); |
| 364 | __ Drop(2); |
| 365 | } |
| 366 | |
| 367 | // 2a. At least one argument, return a0 if it's a string, otherwise |
| 368 | // dispatch to appropriate conversion. |
| 369 | Label to_string, symbol_descriptive_string; |
| 370 | { |
| 371 | __ JumpIfSmi(a0, &to_string); |
| 372 | __ GetObjectType(a0, a1, a1); |
| 373 | STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE); |
| 374 | __ Subu(a1, a1, Operand(FIRST_NONSTRING_TYPE)); |
| 375 | __ Branch(&symbol_descriptive_string, eq, a1, Operand(zero_reg)); |
| 376 | __ Branch(&to_string, gt, a1, Operand(zero_reg)); |
| 377 | __ Ret(USE_DELAY_SLOT); |
| 378 | __ mov(v0, a0); |
| 379 | } |
| 380 | |
| 381 | // 2b. No arguments, return the empty string (and pop the receiver). |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 382 | __ bind(&no_arguments); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 383 | { |
| 384 | __ LoadRoot(v0, Heap::kempty_stringRootIndex); |
| 385 | __ DropAndRet(1); |
| 386 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 387 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 388 | // 3a. Convert a0 to a string. |
| 389 | __ bind(&to_string); |
| 390 | { |
| 391 | ToStringStub stub(masm->isolate()); |
| 392 | __ TailCallStub(&stub); |
| 393 | } |
| 394 | |
| 395 | // 3b. Convert symbol in a0 to a string. |
| 396 | __ bind(&symbol_descriptive_string); |
| 397 | { |
| 398 | __ Push(a0); |
| 399 | __ TailCallRuntime(Runtime::kSymbolDescriptiveString); |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | |
| 404 | void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) { |
| 405 | // ----------- S t a t e ------------- |
| 406 | // -- a0 : number of arguments |
| 407 | // -- a1 : constructor function |
| 408 | // -- a3 : new target |
| 409 | // -- ra : return address |
| 410 | // -- sp[(argc - n - 1) * 8] : arg[n] (zero based) |
| 411 | // -- sp[argc * 8] : receiver |
| 412 | // ----------------------------------- |
| 413 | |
| 414 | // 1. Make sure we operate in the context of the called function. |
| 415 | __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 416 | |
| 417 | // 2. Load the first argument into a0 and get rid of the rest (including the |
| 418 | // receiver). |
| 419 | { |
| 420 | Label no_arguments, done; |
| 421 | __ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg)); |
| 422 | __ Dsubu(a0, a0, Operand(1)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 423 | __ Dlsa(sp, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 424 | __ ld(a0, MemOperand(sp)); |
| 425 | __ Drop(2); |
| 426 | __ jmp(&done); |
| 427 | __ bind(&no_arguments); |
| 428 | __ LoadRoot(a0, Heap::kempty_stringRootIndex); |
| 429 | __ Drop(1); |
| 430 | __ bind(&done); |
| 431 | } |
| 432 | |
| 433 | // 3. Make sure a0 is a string. |
| 434 | { |
| 435 | Label convert, done_convert; |
| 436 | __ JumpIfSmi(a0, &convert); |
| 437 | __ GetObjectType(a0, a2, a2); |
| 438 | __ And(t0, a2, Operand(kIsNotStringMask)); |
| 439 | __ Branch(&done_convert, eq, t0, Operand(zero_reg)); |
| 440 | __ bind(&convert); |
| 441 | { |
| 442 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 443 | ToStringStub stub(masm->isolate()); |
| 444 | __ Push(a1, a3); |
| 445 | __ CallStub(&stub); |
| 446 | __ Move(a0, v0); |
| 447 | __ Pop(a1, a3); |
| 448 | } |
| 449 | __ bind(&done_convert); |
| 450 | } |
| 451 | |
| 452 | // 4. Check if new target and constructor differ. |
| 453 | Label new_object; |
| 454 | __ Branch(&new_object, ne, a1, Operand(a3)); |
| 455 | |
| 456 | // 5. Allocate a JSValue wrapper for the string. |
| 457 | __ AllocateJSValue(v0, a1, a0, a2, t0, &new_object); |
| 458 | __ Ret(); |
| 459 | |
| 460 | // 6. Fallback to the runtime to create new object. |
| 461 | __ bind(&new_object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 462 | { |
| 463 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 464 | __ Push(a0); |
| 465 | FastNewObjectStub stub(masm->isolate()); |
| 466 | __ CallStub(&stub); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 467 | __ Pop(a0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 468 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 469 | __ Ret(USE_DELAY_SLOT); |
| 470 | __ sd(a0, FieldMemOperand(v0, JSValue::kValueOffset)); // In delay slot. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 471 | } |
| 472 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 473 | static void GenerateTailCallToSharedCode(MacroAssembler* masm) { |
| 474 | __ ld(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 475 | __ ld(a2, FieldMemOperand(a2, SharedFunctionInfo::kCodeOffset)); |
| 476 | __ Daddu(at, a2, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 477 | __ Jump(at); |
| 478 | } |
| 479 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 480 | static void GenerateTailCallToReturnedCode(MacroAssembler* masm, |
| 481 | Runtime::FunctionId function_id) { |
| 482 | // ----------- S t a t e ------------- |
| 483 | // -- a0 : argument count (preserved for callee) |
| 484 | // -- a1 : target function (preserved for callee) |
| 485 | // -- a3 : new target (preserved for callee) |
| 486 | // ----------------------------------- |
| 487 | { |
| 488 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 489 | // Push a copy of the function onto the stack. |
| 490 | // Push a copy of the target function and the new target. |
| 491 | __ SmiTag(a0); |
| 492 | __ Push(a0, a1, a3, a1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 493 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 494 | __ CallRuntime(function_id, 1); |
| 495 | // Restore target function and new target. |
| 496 | __ Pop(a0, a1, a3); |
| 497 | __ SmiUntag(a0); |
| 498 | } |
| 499 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 500 | __ Daddu(at, v0, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 501 | __ Jump(at); |
| 502 | } |
| 503 | |
| 504 | |
| 505 | void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) { |
| 506 | // Checking whether the queued function is ready for install is optional, |
| 507 | // since we come across interrupts and stack checks elsewhere. However, |
| 508 | // not checking may delay installing ready functions, and always checking |
| 509 | // would be quite expensive. A good compromise is to first check against |
| 510 | // stack limit as a cue for an interrupt signal. |
| 511 | Label ok; |
| 512 | __ LoadRoot(a4, Heap::kStackLimitRootIndex); |
| 513 | __ Branch(&ok, hs, sp, Operand(a4)); |
| 514 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 515 | GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 516 | |
| 517 | __ bind(&ok); |
| 518 | GenerateTailCallToSharedCode(masm); |
| 519 | } |
| 520 | |
| 521 | |
| 522 | static void Generate_JSConstructStubHelper(MacroAssembler* masm, |
| 523 | bool is_api_function, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 524 | bool create_implicit_receiver, |
| 525 | bool check_derived_construct) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 526 | // ----------- S t a t e ------------- |
| 527 | // -- a0 : number of arguments |
| 528 | // -- a1 : constructor function |
| 529 | // -- a2 : allocation site or undefined |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 530 | // -- a3 : new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 531 | // -- ra : return address |
| 532 | // -- sp[...]: constructor arguments |
| 533 | // ----------------------------------- |
| 534 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 535 | Isolate* isolate = masm->isolate(); |
| 536 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 537 | // Enter a construct frame. |
| 538 | { |
| 539 | FrameScope scope(masm, StackFrame::CONSTRUCT); |
| 540 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 541 | // Preserve the incoming parameters on the stack. |
| 542 | __ AssertUndefinedOrAllocationSite(a2, t0); |
| 543 | __ SmiTag(a0); |
| 544 | __ Push(a2, a0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 545 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 546 | if (create_implicit_receiver) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 547 | __ Push(a1, a3); |
| 548 | FastNewObjectStub stub(masm->isolate()); |
| 549 | __ CallStub(&stub); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 550 | __ mov(t0, v0); |
| 551 | __ Pop(a1, a3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 552 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 553 | // ----------- S t a t e ------------- |
| 554 | // -- a1: constructor function |
| 555 | // -- a3: new target |
| 556 | // -- t0: newly allocated object |
| 557 | // ----------------------------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 558 | __ ld(a0, MemOperand(sp)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 559 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 560 | __ SmiUntag(a0); |
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 | if (create_implicit_receiver) { |
| 563 | // Push the allocated receiver to the stack. We need two copies |
| 564 | // because we may have to return the original one and the calling |
| 565 | // conventions dictate that the called function pops the receiver. |
| 566 | __ Push(t0, t0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 567 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 568 | __ PushRoot(Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 569 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 570 | |
| 571 | // Set up pointer to last argument. |
| 572 | __ Daddu(a2, fp, Operand(StandardFrameConstants::kCallerSPOffset)); |
| 573 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 574 | // Copy arguments and receiver to the expression stack. |
| 575 | // a0: number of arguments |
| 576 | // a1: constructor function |
| 577 | // a2: address of last argument (caller sp) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 578 | // a3: new target |
| 579 | // t0: number of arguments (smi-tagged) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 580 | // sp[0]: receiver |
| 581 | // sp[1]: receiver |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 582 | // sp[2]: number of arguments (smi-tagged) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 583 | Label loop, entry; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 584 | __ mov(t0, a0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 585 | __ jmp(&entry); |
| 586 | __ bind(&loop); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 587 | __ Dlsa(a4, a2, t0, kPointerSizeLog2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 588 | __ ld(a5, MemOperand(a4)); |
| 589 | __ push(a5); |
| 590 | __ bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 591 | __ Daddu(t0, t0, Operand(-1)); |
| 592 | __ Branch(&loop, greater_equal, t0, Operand(zero_reg)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 593 | |
| 594 | // Call the function. |
| 595 | // a0: number of arguments |
| 596 | // a1: constructor function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 597 | // a3: new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 598 | if (is_api_function) { |
| 599 | __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 600 | Handle<Code> code = |
| 601 | masm->isolate()->builtins()->HandleApiCallConstruct(); |
| 602 | __ Call(code, RelocInfo::CODE_TARGET); |
| 603 | } else { |
| 604 | ParameterCount actual(a0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 605 | __ InvokeFunction(a1, a3, actual, CALL_FUNCTION, |
| 606 | CheckDebugStepCallWrapper()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 607 | } |
| 608 | |
| 609 | // Store offset of return address for deoptimizer. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 610 | if (create_implicit_receiver && !is_api_function) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 611 | masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset()); |
| 612 | } |
| 613 | |
| 614 | // Restore context from the frame. |
| 615 | __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 616 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 617 | if (create_implicit_receiver) { |
| 618 | // If the result is an object (in the ECMA sense), we should get rid |
| 619 | // of the receiver and use the result; see ECMA-262 section 13.2.2-7 |
| 620 | // on page 74. |
| 621 | Label use_receiver, exit; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 622 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 623 | // If the result is a smi, it is *not* an object in the ECMA sense. |
| 624 | // v0: result |
| 625 | // sp[0]: receiver (newly allocated object) |
| 626 | // sp[1]: number of arguments (smi-tagged) |
| 627 | __ JumpIfSmi(v0, &use_receiver); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 628 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 629 | // If the type of the result (stored in its map) is less than |
| 630 | // FIRST_JS_RECEIVER_TYPE, it is not an object in the ECMA sense. |
| 631 | __ GetObjectType(v0, a1, a3); |
| 632 | __ Branch(&exit, greater_equal, a3, Operand(FIRST_JS_RECEIVER_TYPE)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 633 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 634 | // Throw away the result of the constructor invocation and use the |
| 635 | // on-stack receiver as the result. |
| 636 | __ bind(&use_receiver); |
| 637 | __ ld(v0, MemOperand(sp)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 638 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 639 | // Remove receiver from the stack, remove caller arguments, and |
| 640 | // return. |
| 641 | __ bind(&exit); |
| 642 | // v0: result |
| 643 | // sp[0]: receiver (newly allocated object) |
| 644 | // sp[1]: number of arguments (smi-tagged) |
| 645 | __ ld(a1, MemOperand(sp, 1 * kPointerSize)); |
| 646 | } else { |
| 647 | __ ld(a1, MemOperand(sp)); |
| 648 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 649 | |
| 650 | // Leave construct frame. |
| 651 | } |
| 652 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 653 | // ES6 9.2.2. Step 13+ |
| 654 | // Check that the result is not a Smi, indicating that the constructor result |
| 655 | // from a derived class is neither undefined nor an Object. |
| 656 | if (check_derived_construct) { |
| 657 | Label dont_throw; |
| 658 | __ JumpIfNotSmi(v0, &dont_throw); |
| 659 | { |
| 660 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 661 | __ CallRuntime(Runtime::kThrowDerivedConstructorReturnedNonObject); |
| 662 | } |
| 663 | __ bind(&dont_throw); |
| 664 | } |
| 665 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 666 | __ SmiScale(a4, a1, kPointerSizeLog2); |
| 667 | __ Daddu(sp, sp, a4); |
| 668 | __ Daddu(sp, sp, kPointerSize); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 669 | if (create_implicit_receiver) { |
| 670 | __ IncrementCounter(isolate->counters()->constructed_objects(), 1, a1, a2); |
| 671 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 672 | __ Ret(); |
| 673 | } |
| 674 | |
| 675 | |
| 676 | void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 677 | Generate_JSConstructStubHelper(masm, false, true, false); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | |
| 681 | void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 682 | Generate_JSConstructStubHelper(masm, true, false, false); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 683 | } |
| 684 | |
| 685 | |
| 686 | void Builtins::Generate_JSBuiltinsConstructStub(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 687 | Generate_JSConstructStubHelper(masm, false, false, false); |
| 688 | } |
| 689 | |
| 690 | |
| 691 | void Builtins::Generate_JSBuiltinsConstructStubForDerived( |
| 692 | MacroAssembler* masm) { |
| 693 | Generate_JSConstructStubHelper(masm, false, false, true); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 694 | } |
| 695 | |
| 696 | |
| 697 | void Builtins::Generate_ConstructedNonConstructable(MacroAssembler* masm) { |
| 698 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 699 | __ Push(a1); |
| 700 | __ CallRuntime(Runtime::kThrowConstructedNonConstructable); |
| 701 | } |
| 702 | |
| 703 | |
| 704 | enum IsTagged { kArgcIsSmiTagged, kArgcIsUntaggedInt }; |
| 705 | |
| 706 | |
| 707 | // Clobbers a2; preserves all other registers. |
| 708 | static void Generate_CheckStackOverflow(MacroAssembler* masm, Register argc, |
| 709 | IsTagged argc_is_tagged) { |
| 710 | // Check the stack for overflow. We are not trying to catch |
| 711 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 712 | // limit" is checked. |
| 713 | Label okay; |
| 714 | __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); |
| 715 | // Make a2 the space we have left. The stack might already be overflowed |
| 716 | // here which will cause r2 to become negative. |
| 717 | __ dsubu(a2, sp, a2); |
| 718 | // Check if the arguments will overflow the stack. |
| 719 | if (argc_is_tagged == kArgcIsSmiTagged) { |
| 720 | __ SmiScale(a7, v0, kPointerSizeLog2); |
| 721 | } else { |
| 722 | DCHECK(argc_is_tagged == kArgcIsUntaggedInt); |
| 723 | __ dsll(a7, argc, kPointerSizeLog2); |
| 724 | } |
| 725 | __ Branch(&okay, gt, a2, Operand(a7)); // Signed comparison. |
| 726 | |
| 727 | // Out of stack space. |
| 728 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 729 | |
| 730 | __ bind(&okay); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | |
| 734 | static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, |
| 735 | bool is_construct) { |
| 736 | // Called from JSEntryStub::GenerateBody |
| 737 | |
| 738 | // ----------- S t a t e ------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 739 | // -- a0: new.target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 740 | // -- a1: function |
| 741 | // -- a2: receiver_pointer |
| 742 | // -- a3: argc |
| 743 | // -- s0: argv |
| 744 | // ----------------------------------- |
| 745 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
| 746 | // Clear the context before we push it when entering the JS frame. |
| 747 | __ mov(cp, zero_reg); |
| 748 | |
| 749 | // Enter an internal frame. |
| 750 | { |
| 751 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 752 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 753 | // Setup the context (we need to use the caller context from the isolate). |
| 754 | ExternalReference context_address(Isolate::kContextAddress, |
| 755 | masm->isolate()); |
| 756 | __ li(cp, Operand(context_address)); |
| 757 | __ ld(cp, MemOperand(cp)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 758 | |
| 759 | // Push the function and the receiver onto the stack. |
| 760 | __ Push(a1, a2); |
| 761 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 762 | // Check if we have enough stack space to push all arguments. |
| 763 | // Clobbers a2. |
| 764 | Generate_CheckStackOverflow(masm, a3, kArgcIsUntaggedInt); |
| 765 | |
| 766 | // Remember new.target. |
| 767 | __ mov(a5, a0); |
| 768 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 769 | // Copy arguments to the stack in a loop. |
| 770 | // a3: argc |
| 771 | // s0: argv, i.e. points to first arg |
| 772 | Label loop, entry; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 773 | __ Dlsa(a6, s0, a3, kPointerSizeLog2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 774 | __ b(&entry); |
| 775 | __ nop(); // Branch delay slot nop. |
| 776 | // a6 points past last arg. |
| 777 | __ bind(&loop); |
| 778 | __ ld(a4, MemOperand(s0)); // Read next parameter. |
| 779 | __ daddiu(s0, s0, kPointerSize); |
| 780 | __ ld(a4, MemOperand(a4)); // Dereference handle. |
| 781 | __ push(a4); // Push parameter. |
| 782 | __ bind(&entry); |
| 783 | __ Branch(&loop, ne, s0, Operand(a6)); |
| 784 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 785 | // Setup new.target and argc. |
| 786 | __ mov(a0, a3); |
| 787 | __ mov(a3, a5); |
| 788 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 789 | // Initialize all JavaScript callee-saved registers, since they will be seen |
| 790 | // by the garbage collector as part of handlers. |
| 791 | __ LoadRoot(a4, Heap::kUndefinedValueRootIndex); |
| 792 | __ mov(s1, a4); |
| 793 | __ mov(s2, a4); |
| 794 | __ mov(s3, a4); |
| 795 | __ mov(s4, a4); |
| 796 | __ mov(s5, a4); |
| 797 | // s6 holds the root address. Do not clobber. |
| 798 | // s7 is cp. Do not init. |
| 799 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 800 | // Invoke the code. |
| 801 | Handle<Code> builtin = is_construct |
| 802 | ? masm->isolate()->builtins()->Construct() |
| 803 | : masm->isolate()->builtins()->Call(); |
| 804 | __ Call(builtin, RelocInfo::CODE_TARGET); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 805 | |
| 806 | // Leave internal frame. |
| 807 | } |
| 808 | __ Jump(ra); |
| 809 | } |
| 810 | |
| 811 | |
| 812 | void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { |
| 813 | Generate_JSEntryTrampolineHelper(masm, false); |
| 814 | } |
| 815 | |
| 816 | |
| 817 | void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { |
| 818 | Generate_JSEntryTrampolineHelper(masm, true); |
| 819 | } |
| 820 | |
| 821 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 822 | // Generate code for entering a JS function with the interpreter. |
| 823 | // On entry to the function the receiver and arguments have been pushed on the |
| 824 | // stack left to right. The actual argument count matches the formal parameter |
| 825 | // count expected by the function. |
| 826 | // |
| 827 | // The live registers are: |
| 828 | // o a1: the JS function object being called. |
| 829 | // o a3: the new target |
| 830 | // o cp: our context |
| 831 | // o fp: the caller's frame pointer |
| 832 | // o sp: stack pointer |
| 833 | // o ra: return address |
| 834 | // |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 835 | // The function builds an interpreter frame. See InterpreterFrameConstants in |
| 836 | // frames.h for its layout. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 837 | void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { |
| 838 | // Open a frame scope to indicate that there is a frame on the stack. The |
| 839 | // MANUAL indicates that the scope shouldn't actually generate code to set up |
| 840 | // the frame (that is done below). |
| 841 | FrameScope frame_scope(masm, StackFrame::MANUAL); |
| 842 | |
| 843 | __ Push(ra, fp, cp, a1); |
| 844 | __ Daddu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 845 | |
| 846 | // Get the bytecode array from the function object and load the pointer to the |
| 847 | // first entry into kInterpreterBytecodeRegister. |
| 848 | __ ld(a0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 849 | Label load_debug_bytecode_array, bytecode_array_loaded; |
| 850 | Register debug_info = kInterpreterBytecodeArrayRegister; |
| 851 | DCHECK(!debug_info.is(a0)); |
| 852 | __ ld(debug_info, FieldMemOperand(a0, SharedFunctionInfo::kDebugInfoOffset)); |
| 853 | __ Branch(&load_debug_bytecode_array, ne, debug_info, |
| 854 | Operand(DebugInfo::uninitialized())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 855 | __ ld(kInterpreterBytecodeArrayRegister, |
| 856 | FieldMemOperand(a0, SharedFunctionInfo::kFunctionDataOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 857 | __ bind(&bytecode_array_loaded); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 858 | |
| 859 | if (FLAG_debug_code) { |
| 860 | // Check function data field is actually a BytecodeArray object. |
| 861 | __ SmiTst(kInterpreterBytecodeArrayRegister, a4); |
| 862 | __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, a4, |
| 863 | Operand(zero_reg)); |
| 864 | __ GetObjectType(kInterpreterBytecodeArrayRegister, a4, a4); |
| 865 | __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, a4, |
| 866 | Operand(BYTECODE_ARRAY_TYPE)); |
| 867 | } |
| 868 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 869 | // Push new.target, bytecode array and zero for bytecode array offset. |
| 870 | __ Push(a3, kInterpreterBytecodeArrayRegister, zero_reg); |
| 871 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 872 | // Allocate the local and temporary register file on the stack. |
| 873 | { |
| 874 | // Load frame size (word) from the BytecodeArray object. |
| 875 | __ lw(a4, FieldMemOperand(kInterpreterBytecodeArrayRegister, |
| 876 | BytecodeArray::kFrameSizeOffset)); |
| 877 | |
| 878 | // Do a stack check to ensure we don't go over the limit. |
| 879 | Label ok; |
| 880 | __ Dsubu(a5, sp, Operand(a4)); |
| 881 | __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); |
| 882 | __ Branch(&ok, hs, a5, Operand(a2)); |
| 883 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 884 | __ bind(&ok); |
| 885 | |
| 886 | // If ok, push undefined as the initial value for all register file entries. |
| 887 | Label loop_header; |
| 888 | Label loop_check; |
| 889 | __ LoadRoot(a5, Heap::kUndefinedValueRootIndex); |
| 890 | __ Branch(&loop_check); |
| 891 | __ bind(&loop_header); |
| 892 | // TODO(rmcilroy): Consider doing more than one push per loop iteration. |
| 893 | __ push(a5); |
| 894 | // Continue loop if not done. |
| 895 | __ bind(&loop_check); |
| 896 | __ Dsubu(a4, a4, Operand(kPointerSize)); |
| 897 | __ Branch(&loop_header, ge, a4, Operand(zero_reg)); |
| 898 | } |
| 899 | |
| 900 | // TODO(rmcilroy): List of things not currently dealt with here but done in |
| 901 | // fullcodegen's prologue: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 902 | // - Call ProfileEntryHookStub when isolate has a function_entry_hook. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 903 | // - Code aging of the BytecodeArray object. |
| 904 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 905 | // Load bytecode offset and dispatch table into registers. |
| 906 | __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); |
| 907 | __ Daddu(kInterpreterRegisterFileRegister, fp, |
| 908 | Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); |
| 909 | __ li(kInterpreterBytecodeOffsetRegister, |
| 910 | Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 911 | __ li(kInterpreterDispatchTableRegister, |
| 912 | Operand(ExternalReference::interpreter_dispatch_table_address( |
| 913 | masm->isolate()))); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 914 | |
| 915 | // Dispatch to the first bytecode handler for the function. |
| 916 | __ Daddu(a0, kInterpreterBytecodeArrayRegister, |
| 917 | kInterpreterBytecodeOffsetRegister); |
| 918 | __ lbu(a0, MemOperand(a0)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 919 | __ Dlsa(at, kInterpreterDispatchTableRegister, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 920 | __ ld(at, MemOperand(at)); |
| 921 | // TODO(rmcilroy): Make dispatch table point to code entrys to avoid untagging |
| 922 | // and header removal. |
| 923 | __ Daddu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 924 | __ Call(at); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 925 | |
| 926 | // Even though the first bytecode handler was called, we will never return. |
| 927 | __ Abort(kUnexpectedReturnFromBytecodeHandler); |
| 928 | |
| 929 | // Load debug copy of the bytecode array. |
| 930 | __ bind(&load_debug_bytecode_array); |
| 931 | __ ld(kInterpreterBytecodeArrayRegister, |
| 932 | FieldMemOperand(debug_info, DebugInfo::kAbstractCodeIndex)); |
| 933 | __ Branch(&bytecode_array_loaded); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 934 | } |
| 935 | |
| 936 | |
| 937 | void Builtins::Generate_InterpreterExitTrampoline(MacroAssembler* masm) { |
| 938 | // TODO(rmcilroy): List of things not currently dealt with here but done in |
| 939 | // fullcodegen's EmitReturnSequence. |
| 940 | // - Supporting FLAG_trace for Runtime::TraceExit. |
| 941 | // - Support profiler (specifically decrementing profiling_counter |
| 942 | // appropriately and calling out to HandleInterrupts if necessary). |
| 943 | |
| 944 | // The return value is in accumulator, which is already in v0. |
| 945 | |
| 946 | // Leave the frame (also dropping the register file). |
| 947 | __ LeaveFrame(StackFrame::JAVA_SCRIPT); |
| 948 | |
| 949 | // Drop receiver + arguments and return. |
| 950 | __ lw(at, FieldMemOperand(kInterpreterBytecodeArrayRegister, |
| 951 | BytecodeArray::kParameterSizeOffset)); |
| 952 | __ Daddu(sp, sp, at); |
| 953 | __ Jump(ra); |
| 954 | } |
| 955 | |
| 956 | |
| 957 | // static |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 958 | void Builtins::Generate_InterpreterPushArgsAndCallImpl( |
| 959 | MacroAssembler* masm, TailCallMode tail_call_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 960 | // ----------- S t a t e ------------- |
| 961 | // -- a0 : the number of arguments (not including the receiver) |
| 962 | // -- a2 : the address of the first argument to be pushed. Subsequent |
| 963 | // arguments should be consecutive above this, in the same order as |
| 964 | // they are to be pushed onto the stack. |
| 965 | // -- a1 : the target to call (can be any Object). |
| 966 | // ----------------------------------- |
| 967 | |
| 968 | // Find the address of the last argument. |
| 969 | __ Daddu(a3, a0, Operand(1)); // Add one for receiver. |
| 970 | __ dsll(a3, a3, kPointerSizeLog2); |
| 971 | __ Dsubu(a3, a2, Operand(a3)); |
| 972 | |
| 973 | // Push the arguments. |
| 974 | Label loop_header, loop_check; |
| 975 | __ Branch(&loop_check); |
| 976 | __ bind(&loop_header); |
| 977 | __ ld(t0, MemOperand(a2)); |
| 978 | __ Daddu(a2, a2, Operand(-kPointerSize)); |
| 979 | __ push(t0); |
| 980 | __ bind(&loop_check); |
| 981 | __ Branch(&loop_header, gt, a2, Operand(a3)); |
| 982 | |
| 983 | // Call the target. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 984 | __ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny, |
| 985 | tail_call_mode), |
| 986 | RelocInfo::CODE_TARGET); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 987 | } |
| 988 | |
| 989 | |
| 990 | // static |
| 991 | void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) { |
| 992 | // ----------- S t a t e ------------- |
| 993 | // -- a0 : argument count (not including receiver) |
| 994 | // -- a3 : new target |
| 995 | // -- a1 : constructor to call |
| 996 | // -- a2 : address of the first argument |
| 997 | // ----------------------------------- |
| 998 | |
| 999 | // Find the address of the last argument. |
| 1000 | __ dsll(t0, a0, kPointerSizeLog2); |
| 1001 | __ Dsubu(t0, a2, Operand(t0)); |
| 1002 | |
| 1003 | // Push a slot for the receiver. |
| 1004 | __ push(zero_reg); |
| 1005 | |
| 1006 | // Push the arguments. |
| 1007 | Label loop_header, loop_check; |
| 1008 | __ Branch(&loop_check); |
| 1009 | __ bind(&loop_header); |
| 1010 | __ ld(t1, MemOperand(a2)); |
| 1011 | __ Daddu(a2, a2, Operand(-kPointerSize)); |
| 1012 | __ push(t1); |
| 1013 | __ bind(&loop_check); |
| 1014 | __ Branch(&loop_header, gt, a2, Operand(t0)); |
| 1015 | |
| 1016 | // Call the constructor with a0, a1, and a3 unmodified. |
| 1017 | __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
| 1018 | } |
| 1019 | |
| 1020 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1021 | static void Generate_EnterBytecodeDispatch(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1022 | // Initialize register file register and dispatch table register. |
| 1023 | __ Daddu(kInterpreterRegisterFileRegister, fp, |
| 1024 | Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1025 | __ li(kInterpreterDispatchTableRegister, |
| 1026 | Operand(ExternalReference::interpreter_dispatch_table_address( |
| 1027 | masm->isolate()))); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1028 | |
| 1029 | // Get the context from the frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1030 | __ ld(kContextRegister, |
| 1031 | MemOperand(kInterpreterRegisterFileRegister, |
| 1032 | InterpreterFrameConstants::kContextFromRegisterPointer)); |
| 1033 | |
| 1034 | // Get the bytecode array pointer from the frame. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1035 | __ ld( |
| 1036 | kInterpreterBytecodeArrayRegister, |
| 1037 | MemOperand(kInterpreterRegisterFileRegister, |
| 1038 | InterpreterFrameConstants::kBytecodeArrayFromRegisterPointer)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1039 | |
| 1040 | if (FLAG_debug_code) { |
| 1041 | // Check function data field is actually a BytecodeArray object. |
| 1042 | __ SmiTst(kInterpreterBytecodeArrayRegister, at); |
| 1043 | __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, at, |
| 1044 | Operand(zero_reg)); |
| 1045 | __ GetObjectType(kInterpreterBytecodeArrayRegister, a1, a1); |
| 1046 | __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry, a1, |
| 1047 | Operand(BYTECODE_ARRAY_TYPE)); |
| 1048 | } |
| 1049 | |
| 1050 | // Get the target bytecode offset from the frame. |
| 1051 | __ ld(kInterpreterBytecodeOffsetRegister, |
| 1052 | MemOperand( |
| 1053 | kInterpreterRegisterFileRegister, |
| 1054 | InterpreterFrameConstants::kBytecodeOffsetFromRegisterPointer)); |
| 1055 | __ SmiUntag(kInterpreterBytecodeOffsetRegister); |
| 1056 | |
| 1057 | // Dispatch to the target bytecode. |
| 1058 | __ Daddu(a1, kInterpreterBytecodeArrayRegister, |
| 1059 | kInterpreterBytecodeOffsetRegister); |
| 1060 | __ lbu(a1, MemOperand(a1)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1061 | __ Dlsa(a1, kInterpreterDispatchTableRegister, a1, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1062 | __ ld(a1, MemOperand(a1)); |
| 1063 | __ Daddu(a1, a1, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 1064 | __ Jump(a1); |
| 1065 | } |
| 1066 | |
| 1067 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1068 | static void Generate_InterpreterNotifyDeoptimizedHelper( |
| 1069 | MacroAssembler* masm, Deoptimizer::BailoutType type) { |
| 1070 | // Enter an internal frame. |
| 1071 | { |
| 1072 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1073 | |
| 1074 | // Pass the deoptimization type to the runtime system. |
| 1075 | __ li(a1, Operand(Smi::FromInt(static_cast<int>(type)))); |
| 1076 | __ push(a1); |
| 1077 | __ CallRuntime(Runtime::kNotifyDeoptimized); |
| 1078 | // Tear down internal frame. |
| 1079 | } |
| 1080 | |
| 1081 | // Drop state (we don't use these for interpreter deopts) and and pop the |
| 1082 | // accumulator value into the accumulator register. |
| 1083 | __ Drop(1); |
| 1084 | __ Pop(kInterpreterAccumulatorRegister); |
| 1085 | |
| 1086 | // Enter the bytecode dispatch. |
| 1087 | Generate_EnterBytecodeDispatch(masm); |
| 1088 | } |
| 1089 | |
| 1090 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1091 | void Builtins::Generate_InterpreterNotifyDeoptimized(MacroAssembler* masm) { |
| 1092 | Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
| 1093 | } |
| 1094 | |
| 1095 | |
| 1096 | void Builtins::Generate_InterpreterNotifySoftDeoptimized(MacroAssembler* masm) { |
| 1097 | Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::SOFT); |
| 1098 | } |
| 1099 | |
| 1100 | |
| 1101 | void Builtins::Generate_InterpreterNotifyLazyDeoptimized(MacroAssembler* masm) { |
| 1102 | Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); |
| 1103 | } |
| 1104 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1105 | void Builtins::Generate_InterpreterEnterBytecodeDispatch(MacroAssembler* masm) { |
| 1106 | // Set the address of the interpreter entry trampoline as a return address. |
| 1107 | // This simulates the initial call to bytecode handlers in interpreter entry |
| 1108 | // trampoline. The return will never actually be taken, but our stack walker |
| 1109 | // uses this address to determine whether a frame is interpreted. |
| 1110 | __ li(ra, Operand(masm->isolate()->builtins()->InterpreterEntryTrampoline())); |
| 1111 | |
| 1112 | Generate_EnterBytecodeDispatch(masm); |
| 1113 | } |
| 1114 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1115 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1116 | void Builtins::Generate_CompileLazy(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1117 | GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1118 | } |
| 1119 | |
| 1120 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1121 | void Builtins::Generate_CompileOptimized(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1122 | GenerateTailCallToReturnedCode(masm, |
| 1123 | Runtime::kCompileOptimized_NotConcurrent); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1124 | } |
| 1125 | |
| 1126 | |
| 1127 | void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1128 | GenerateTailCallToReturnedCode(masm, Runtime::kCompileOptimized_Concurrent); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1129 | } |
| 1130 | |
| 1131 | |
| 1132 | static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { |
| 1133 | // For now, we are relying on the fact that make_code_young doesn't do any |
| 1134 | // garbage collection which allows us to save/restore the registers without |
| 1135 | // worrying about which of them contain pointers. We also don't build an |
| 1136 | // internal frame to make the code faster, since we shouldn't have to do stack |
| 1137 | // crawls in MakeCodeYoung. This seems a bit fragile. |
| 1138 | |
| 1139 | // Set a0 to point to the head of the PlatformCodeAge sequence. |
| 1140 | __ Dsubu(a0, a0, |
| 1141 | Operand(kNoCodeAgeSequenceLength - Assembler::kInstrSize)); |
| 1142 | |
| 1143 | // The following registers must be saved and restored when calling through to |
| 1144 | // the runtime: |
| 1145 | // a0 - contains return address (beginning of patch sequence) |
| 1146 | // a1 - isolate |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1147 | // a3 - new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1148 | RegList saved_regs = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1149 | (a0.bit() | a1.bit() | a3.bit() | ra.bit() | fp.bit()) & ~sp.bit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1150 | FrameScope scope(masm, StackFrame::MANUAL); |
| 1151 | __ MultiPush(saved_regs); |
| 1152 | __ PrepareCallCFunction(2, 0, a2); |
| 1153 | __ li(a1, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 1154 | __ CallCFunction( |
| 1155 | ExternalReference::get_make_code_young_function(masm->isolate()), 2); |
| 1156 | __ MultiPop(saved_regs); |
| 1157 | __ Jump(a0); |
| 1158 | } |
| 1159 | |
| 1160 | #define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C) \ |
| 1161 | void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking( \ |
| 1162 | MacroAssembler* masm) { \ |
| 1163 | GenerateMakeCodeYoungAgainCommon(masm); \ |
| 1164 | } \ |
| 1165 | void Builtins::Generate_Make##C##CodeYoungAgainOddMarking( \ |
| 1166 | MacroAssembler* masm) { \ |
| 1167 | GenerateMakeCodeYoungAgainCommon(masm); \ |
| 1168 | } |
| 1169 | CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR) |
| 1170 | #undef DEFINE_CODE_AGE_BUILTIN_GENERATOR |
| 1171 | |
| 1172 | |
| 1173 | void Builtins::Generate_MarkCodeAsExecutedOnce(MacroAssembler* masm) { |
| 1174 | // For now, as in GenerateMakeCodeYoungAgainCommon, we are relying on the fact |
| 1175 | // that make_code_young doesn't do any garbage collection which allows us to |
| 1176 | // save/restore the registers without worrying about which of them contain |
| 1177 | // pointers. |
| 1178 | |
| 1179 | // Set a0 to point to the head of the PlatformCodeAge sequence. |
| 1180 | __ Dsubu(a0, a0, |
| 1181 | Operand(kNoCodeAgeSequenceLength - Assembler::kInstrSize)); |
| 1182 | |
| 1183 | // The following registers must be saved and restored when calling through to |
| 1184 | // the runtime: |
| 1185 | // a0 - contains return address (beginning of patch sequence) |
| 1186 | // a1 - isolate |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1187 | // a3 - new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1188 | RegList saved_regs = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1189 | (a0.bit() | a1.bit() | a3.bit() | ra.bit() | fp.bit()) & ~sp.bit(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1190 | FrameScope scope(masm, StackFrame::MANUAL); |
| 1191 | __ MultiPush(saved_regs); |
| 1192 | __ PrepareCallCFunction(2, 0, a2); |
| 1193 | __ li(a1, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 1194 | __ CallCFunction( |
| 1195 | ExternalReference::get_mark_code_as_executed_function(masm->isolate()), |
| 1196 | 2); |
| 1197 | __ MultiPop(saved_regs); |
| 1198 | |
| 1199 | // Perform prologue operations usually performed by the young code stub. |
| 1200 | __ Push(ra, fp, cp, a1); |
| 1201 | __ Daddu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
| 1202 | |
| 1203 | // Jump to point after the code-age stub. |
| 1204 | __ Daddu(a0, a0, Operand((kNoCodeAgeSequenceLength))); |
| 1205 | __ Jump(a0); |
| 1206 | } |
| 1207 | |
| 1208 | |
| 1209 | void Builtins::Generate_MarkCodeAsExecutedTwice(MacroAssembler* masm) { |
| 1210 | GenerateMakeCodeYoungAgainCommon(masm); |
| 1211 | } |
| 1212 | |
| 1213 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1214 | void Builtins::Generate_MarkCodeAsToBeExecutedOnce(MacroAssembler* masm) { |
| 1215 | Generate_MarkCodeAsExecutedOnce(masm); |
| 1216 | } |
| 1217 | |
| 1218 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1219 | static void Generate_NotifyStubFailureHelper(MacroAssembler* masm, |
| 1220 | SaveFPRegsMode save_doubles) { |
| 1221 | { |
| 1222 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1223 | |
| 1224 | // Preserve registers across notification, this is important for compiled |
| 1225 | // stubs that tail call the runtime on deopts passing their parameters in |
| 1226 | // registers. |
| 1227 | __ MultiPush(kJSCallerSaved | kCalleeSaved); |
| 1228 | // Pass the function and deoptimization type to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1229 | __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1230 | __ MultiPop(kJSCallerSaved | kCalleeSaved); |
| 1231 | } |
| 1232 | |
| 1233 | __ Daddu(sp, sp, Operand(kPointerSize)); // Ignore state |
| 1234 | __ Jump(ra); // Jump to miss handler |
| 1235 | } |
| 1236 | |
| 1237 | |
| 1238 | void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) { |
| 1239 | Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs); |
| 1240 | } |
| 1241 | |
| 1242 | |
| 1243 | void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) { |
| 1244 | Generate_NotifyStubFailureHelper(masm, kSaveFPRegs); |
| 1245 | } |
| 1246 | |
| 1247 | |
| 1248 | static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm, |
| 1249 | Deoptimizer::BailoutType type) { |
| 1250 | { |
| 1251 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1252 | // Pass the function and deoptimization type to the runtime system. |
| 1253 | __ li(a0, Operand(Smi::FromInt(static_cast<int>(type)))); |
| 1254 | __ push(a0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1255 | __ CallRuntime(Runtime::kNotifyDeoptimized); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1256 | } |
| 1257 | |
| 1258 | // Get the full codegen state from the stack and untag it -> a6. |
| 1259 | __ ld(a6, MemOperand(sp, 0 * kPointerSize)); |
| 1260 | __ SmiUntag(a6); |
| 1261 | // Switch on the state. |
| 1262 | Label with_tos_register, unknown_state; |
| 1263 | __ Branch(&with_tos_register, |
| 1264 | ne, a6, Operand(FullCodeGenerator::NO_REGISTERS)); |
| 1265 | __ Ret(USE_DELAY_SLOT); |
| 1266 | // Safe to fill delay slot Addu will emit one instruction. |
| 1267 | __ Daddu(sp, sp, Operand(1 * kPointerSize)); // Remove state. |
| 1268 | |
| 1269 | __ bind(&with_tos_register); |
| 1270 | __ ld(v0, MemOperand(sp, 1 * kPointerSize)); |
| 1271 | __ Branch(&unknown_state, ne, a6, Operand(FullCodeGenerator::TOS_REG)); |
| 1272 | |
| 1273 | __ Ret(USE_DELAY_SLOT); |
| 1274 | // Safe to fill delay slot Addu will emit one instruction. |
| 1275 | __ Daddu(sp, sp, Operand(2 * kPointerSize)); // Remove state. |
| 1276 | |
| 1277 | __ bind(&unknown_state); |
| 1278 | __ stop("no cases left"); |
| 1279 | } |
| 1280 | |
| 1281 | |
| 1282 | void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { |
| 1283 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
| 1284 | } |
| 1285 | |
| 1286 | |
| 1287 | void Builtins::Generate_NotifySoftDeoptimized(MacroAssembler* masm) { |
| 1288 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::SOFT); |
| 1289 | } |
| 1290 | |
| 1291 | |
| 1292 | void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) { |
| 1293 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); |
| 1294 | } |
| 1295 | |
| 1296 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1297 | // Clobbers {t2, t3, a4, a5}. |
| 1298 | static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver, |
| 1299 | Register function_template_info, |
| 1300 | Label* receiver_check_failed) { |
| 1301 | Register signature = t2; |
| 1302 | Register map = t3; |
| 1303 | Register constructor = a4; |
| 1304 | Register scratch = a5; |
| 1305 | |
| 1306 | // If there is no signature, return the holder. |
| 1307 | __ ld(signature, FieldMemOperand(function_template_info, |
| 1308 | FunctionTemplateInfo::kSignatureOffset)); |
| 1309 | Label receiver_check_passed; |
| 1310 | __ JumpIfRoot(signature, Heap::kUndefinedValueRootIndex, |
| 1311 | &receiver_check_passed); |
| 1312 | |
| 1313 | // Walk the prototype chain. |
| 1314 | __ ld(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 1315 | Label prototype_loop_start; |
| 1316 | __ bind(&prototype_loop_start); |
| 1317 | |
| 1318 | // Get the constructor, if any. |
| 1319 | __ GetMapConstructor(constructor, map, scratch, scratch); |
| 1320 | Label next_prototype; |
| 1321 | __ Branch(&next_prototype, ne, scratch, Operand(JS_FUNCTION_TYPE)); |
| 1322 | Register type = constructor; |
| 1323 | __ ld(type, |
| 1324 | FieldMemOperand(constructor, JSFunction::kSharedFunctionInfoOffset)); |
| 1325 | __ ld(type, FieldMemOperand(type, SharedFunctionInfo::kFunctionDataOffset)); |
| 1326 | |
| 1327 | // Loop through the chain of inheriting function templates. |
| 1328 | Label function_template_loop; |
| 1329 | __ bind(&function_template_loop); |
| 1330 | |
| 1331 | // If the signatures match, we have a compatible receiver. |
| 1332 | __ Branch(&receiver_check_passed, eq, signature, Operand(type), |
| 1333 | USE_DELAY_SLOT); |
| 1334 | |
| 1335 | // If the current type is not a FunctionTemplateInfo, load the next prototype |
| 1336 | // in the chain. |
| 1337 | __ JumpIfSmi(type, &next_prototype); |
| 1338 | __ GetObjectType(type, scratch, scratch); |
| 1339 | __ Branch(&next_prototype, ne, scratch, Operand(FUNCTION_TEMPLATE_INFO_TYPE)); |
| 1340 | |
| 1341 | // Otherwise load the parent function template and iterate. |
| 1342 | __ ld(type, |
| 1343 | FieldMemOperand(type, FunctionTemplateInfo::kParentTemplateOffset)); |
| 1344 | __ Branch(&function_template_loop); |
| 1345 | |
| 1346 | // Load the next prototype. |
| 1347 | __ bind(&next_prototype); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1348 | __ lwu(scratch, FieldMemOperand(map, Map::kBitField3Offset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1349 | __ DecodeField<Map::HasHiddenPrototype>(scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1350 | __ Branch(receiver_check_failed, eq, scratch, Operand(zero_reg)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1351 | |
| 1352 | __ ld(receiver, FieldMemOperand(map, Map::kPrototypeOffset)); |
| 1353 | __ ld(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1354 | // Iterate. |
| 1355 | __ Branch(&prototype_loop_start); |
| 1356 | |
| 1357 | __ bind(&receiver_check_passed); |
| 1358 | } |
| 1359 | |
| 1360 | |
| 1361 | void Builtins::Generate_HandleFastApiCall(MacroAssembler* masm) { |
| 1362 | // ----------- S t a t e ------------- |
| 1363 | // -- a0 : number of arguments excluding receiver |
| 1364 | // -- a1 : callee |
| 1365 | // -- ra : return address |
| 1366 | // -- sp[0] : last argument |
| 1367 | // -- ... |
| 1368 | // -- sp[8 * (argc - 1)] : first argument |
| 1369 | // -- sp[8 * argc] : receiver |
| 1370 | // ----------------------------------- |
| 1371 | |
| 1372 | // Load the FunctionTemplateInfo. |
| 1373 | __ ld(t1, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 1374 | __ ld(t1, FieldMemOperand(t1, SharedFunctionInfo::kFunctionDataOffset)); |
| 1375 | |
| 1376 | // Do the compatible receiver check |
| 1377 | Label receiver_check_failed; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1378 | __ Dlsa(t8, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1379 | __ ld(t0, MemOperand(t8)); |
| 1380 | CompatibleReceiverCheck(masm, t0, t1, &receiver_check_failed); |
| 1381 | |
| 1382 | // Get the callback offset from the FunctionTemplateInfo, and jump to the |
| 1383 | // beginning of the code. |
| 1384 | __ ld(t2, FieldMemOperand(t1, FunctionTemplateInfo::kCallCodeOffset)); |
| 1385 | __ ld(t2, FieldMemOperand(t2, CallHandlerInfo::kFastHandlerOffset)); |
| 1386 | __ Daddu(t2, t2, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 1387 | __ Jump(t2); |
| 1388 | |
| 1389 | // Compatible receiver check failed: throw an Illegal Invocation exception. |
| 1390 | __ bind(&receiver_check_failed); |
| 1391 | // Drop the arguments (including the receiver); |
| 1392 | __ Daddu(t8, t8, Operand(kPointerSize)); |
| 1393 | __ daddu(sp, t8, zero_reg); |
| 1394 | __ TailCallRuntime(Runtime::kThrowIllegalInvocation); |
| 1395 | } |
| 1396 | |
| 1397 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1398 | void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) { |
| 1399 | // Lookup the function in the JavaScript frame. |
| 1400 | __ ld(a0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1401 | { |
| 1402 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1403 | // Pass function as argument. |
| 1404 | __ push(a0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1405 | __ CallRuntime(Runtime::kCompileForOnStackReplacement); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1406 | } |
| 1407 | |
| 1408 | // If the code object is null, just return to the unoptimized code. |
| 1409 | __ Ret(eq, v0, Operand(Smi::FromInt(0))); |
| 1410 | |
| 1411 | // Load deoptimization data from the code object. |
| 1412 | // <deopt_data> = <code>[#deoptimization_data_offset] |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1413 | __ ld(a1, MemOperand(v0, Code::kDeoptimizationDataOffset - kHeapObjectTag)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1414 | |
| 1415 | // Load the OSR entrypoint offset from the deoptimization data. |
| 1416 | // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset] |
| 1417 | __ ld(a1, MemOperand(a1, FixedArray::OffsetOfElementAt( |
| 1418 | DeoptimizationInputData::kOsrPcOffsetIndex) - kHeapObjectTag)); |
| 1419 | __ SmiUntag(a1); |
| 1420 | |
| 1421 | // Compute the target address = code_obj + header_size + osr_offset |
| 1422 | // <entry_addr> = <code_obj> + #header_size + <osr_offset> |
| 1423 | __ daddu(v0, v0, a1); |
| 1424 | __ daddiu(ra, v0, Code::kHeaderSize - kHeapObjectTag); |
| 1425 | |
| 1426 | // And "return" to the OSR entry point of the function. |
| 1427 | __ Ret(); |
| 1428 | } |
| 1429 | |
| 1430 | |
| 1431 | void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) { |
| 1432 | // We check the stack limit as indicator that recompilation might be done. |
| 1433 | Label ok; |
| 1434 | __ LoadRoot(at, Heap::kStackLimitRootIndex); |
| 1435 | __ Branch(&ok, hs, sp, Operand(at)); |
| 1436 | { |
| 1437 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1438 | __ CallRuntime(Runtime::kStackGuard); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1439 | } |
| 1440 | __ Jump(masm->isolate()->builtins()->OnStackReplacement(), |
| 1441 | RelocInfo::CODE_TARGET); |
| 1442 | |
| 1443 | __ bind(&ok); |
| 1444 | __ Ret(); |
| 1445 | } |
| 1446 | |
| 1447 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1448 | // static |
| 1449 | void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm, |
| 1450 | int field_index) { |
| 1451 | // ----------- S t a t e ------------- |
| 1452 | // -- sp[0] : receiver |
| 1453 | // ----------------------------------- |
| 1454 | |
| 1455 | // 1. Pop receiver into a0 and check that it's actually a JSDate object. |
| 1456 | Label receiver_not_date; |
| 1457 | { |
| 1458 | __ Pop(a0); |
| 1459 | __ JumpIfSmi(a0, &receiver_not_date); |
| 1460 | __ GetObjectType(a0, t0, t0); |
| 1461 | __ Branch(&receiver_not_date, ne, t0, Operand(JS_DATE_TYPE)); |
| 1462 | } |
| 1463 | |
| 1464 | // 2. Load the specified date field, falling back to the runtime as necessary. |
| 1465 | if (field_index == JSDate::kDateValue) { |
| 1466 | __ Ret(USE_DELAY_SLOT); |
| 1467 | __ ld(v0, FieldMemOperand(a0, JSDate::kValueOffset)); // In delay slot. |
| 1468 | } else { |
| 1469 | if (field_index < JSDate::kFirstUncachedField) { |
| 1470 | Label stamp_mismatch; |
| 1471 | __ li(a1, Operand(ExternalReference::date_cache_stamp(masm->isolate()))); |
| 1472 | __ ld(a1, MemOperand(a1)); |
| 1473 | __ ld(t0, FieldMemOperand(a0, JSDate::kCacheStampOffset)); |
| 1474 | __ Branch(&stamp_mismatch, ne, t0, Operand(a1)); |
| 1475 | __ Ret(USE_DELAY_SLOT); |
| 1476 | __ ld(v0, FieldMemOperand( |
| 1477 | a0, JSDate::kValueOffset + |
| 1478 | field_index * kPointerSize)); // In delay slot. |
| 1479 | __ bind(&stamp_mismatch); |
| 1480 | } |
| 1481 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1482 | __ PrepareCallCFunction(2, t0); |
| 1483 | __ li(a1, Operand(Smi::FromInt(field_index))); |
| 1484 | __ CallCFunction( |
| 1485 | ExternalReference::get_date_field_function(masm->isolate()), 2); |
| 1486 | } |
| 1487 | __ Ret(); |
| 1488 | |
| 1489 | // 3. Raise a TypeError if the receiver is not a date. |
| 1490 | __ bind(&receiver_not_date); |
| 1491 | __ TailCallRuntime(Runtime::kThrowNotDateError); |
| 1492 | } |
| 1493 | |
| 1494 | |
| 1495 | // static |
| 1496 | void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) { |
| 1497 | // ----------- S t a t e ------------- |
| 1498 | // -- a0 : argc |
| 1499 | // -- sp[0] : argArray |
| 1500 | // -- sp[4] : thisArg |
| 1501 | // -- sp[8] : receiver |
| 1502 | // ----------------------------------- |
| 1503 | |
| 1504 | // 1. Load receiver into a1, argArray into a0 (if present), remove all |
| 1505 | // arguments from the stack (including the receiver), and push thisArg (if |
| 1506 | // present) instead. |
| 1507 | { |
| 1508 | Label no_arg; |
| 1509 | Register scratch = a4; |
| 1510 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| 1511 | __ mov(a3, a2); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1512 | // Dlsa() cannot be used hare as scratch value used later. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1513 | __ dsll(scratch, a0, kPointerSizeLog2); |
| 1514 | __ Daddu(a0, sp, Operand(scratch)); |
| 1515 | __ ld(a1, MemOperand(a0)); // receiver |
| 1516 | __ Dsubu(a0, a0, Operand(kPointerSize)); |
| 1517 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1518 | __ ld(a2, MemOperand(a0)); // thisArg |
| 1519 | __ Dsubu(a0, a0, Operand(kPointerSize)); |
| 1520 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1521 | __ ld(a3, MemOperand(a0)); // argArray |
| 1522 | __ bind(&no_arg); |
| 1523 | __ Daddu(sp, sp, Operand(scratch)); |
| 1524 | __ sd(a2, MemOperand(sp)); |
| 1525 | __ mov(a0, a3); |
| 1526 | } |
| 1527 | |
| 1528 | // ----------- S t a t e ------------- |
| 1529 | // -- a0 : argArray |
| 1530 | // -- a1 : receiver |
| 1531 | // -- sp[0] : thisArg |
| 1532 | // ----------------------------------- |
| 1533 | |
| 1534 | // 2. Make sure the receiver is actually callable. |
| 1535 | Label receiver_not_callable; |
| 1536 | __ JumpIfSmi(a1, &receiver_not_callable); |
| 1537 | __ ld(a4, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 1538 | __ lbu(a4, FieldMemOperand(a4, Map::kBitFieldOffset)); |
| 1539 | __ And(a4, a4, Operand(1 << Map::kIsCallable)); |
| 1540 | __ Branch(&receiver_not_callable, eq, a4, Operand(zero_reg)); |
| 1541 | |
| 1542 | // 3. Tail call with no arguments if argArray is null or undefined. |
| 1543 | Label no_arguments; |
| 1544 | __ JumpIfRoot(a0, Heap::kNullValueRootIndex, &no_arguments); |
| 1545 | __ JumpIfRoot(a0, Heap::kUndefinedValueRootIndex, &no_arguments); |
| 1546 | |
| 1547 | // 4a. Apply the receiver to the given argArray (passing undefined for |
| 1548 | // new.target). |
| 1549 | __ LoadRoot(a3, Heap::kUndefinedValueRootIndex); |
| 1550 | __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); |
| 1551 | |
| 1552 | // 4b. The argArray is either null or undefined, so we tail call without any |
| 1553 | // arguments to the receiver. |
| 1554 | __ bind(&no_arguments); |
| 1555 | { |
| 1556 | __ mov(a0, zero_reg); |
| 1557 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
| 1558 | } |
| 1559 | |
| 1560 | // 4c. The receiver is not callable, throw an appropriate TypeError. |
| 1561 | __ bind(&receiver_not_callable); |
| 1562 | { |
| 1563 | __ sd(a1, MemOperand(sp)); |
| 1564 | __ TailCallRuntime(Runtime::kThrowApplyNonFunction); |
| 1565 | } |
| 1566 | } |
| 1567 | |
| 1568 | |
| 1569 | // static |
| 1570 | void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1571 | // 1. Make sure we have at least one argument. |
| 1572 | // a0: actual number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1573 | { |
| 1574 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1575 | __ Branch(&done, ne, a0, Operand(zero_reg)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1576 | __ PushRoot(Heap::kUndefinedValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1577 | __ Daddu(a0, a0, Operand(1)); |
| 1578 | __ bind(&done); |
| 1579 | } |
| 1580 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1581 | // 2. Get the function to call (passed as receiver) from the stack. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1582 | // a0: actual number of arguments |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1583 | __ Dlsa(at, sp, a0, kPointerSizeLog2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1584 | __ ld(a1, MemOperand(at)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1585 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1586 | // 3. Shift arguments and return address one slot down on the stack |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1587 | // (overwriting the original receiver). Adjust argument count to make |
| 1588 | // the original first argument the new receiver. |
| 1589 | // a0: actual number of arguments |
| 1590 | // a1: function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1591 | { |
| 1592 | Label loop; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1593 | // Calculate the copy start address (destination). Copy end address is sp. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1594 | __ Dlsa(a2, sp, a0, kPointerSizeLog2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1595 | |
| 1596 | __ bind(&loop); |
| 1597 | __ ld(at, MemOperand(a2, -kPointerSize)); |
| 1598 | __ sd(at, MemOperand(a2)); |
| 1599 | __ Dsubu(a2, a2, Operand(kPointerSize)); |
| 1600 | __ Branch(&loop, ne, a2, Operand(sp)); |
| 1601 | // Adjust the actual number of arguments and remove the top element |
| 1602 | // (which is a copy of the last argument). |
| 1603 | __ Dsubu(a0, a0, Operand(1)); |
| 1604 | __ Pop(); |
| 1605 | } |
| 1606 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1607 | // 4. Call the callable. |
| 1608 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1609 | } |
| 1610 | |
| 1611 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1612 | void Builtins::Generate_ReflectApply(MacroAssembler* masm) { |
| 1613 | // ----------- S t a t e ------------- |
| 1614 | // -- a0 : argc |
| 1615 | // -- sp[0] : argumentsList |
| 1616 | // -- sp[4] : thisArgument |
| 1617 | // -- sp[8] : target |
| 1618 | // -- sp[12] : receiver |
| 1619 | // ----------------------------------- |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1620 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1621 | // 1. Load target into a1 (if present), argumentsList into a0 (if present), |
| 1622 | // remove all arguments from the stack (including the receiver), and push |
| 1623 | // thisArgument (if present) instead. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1624 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1625 | Label no_arg; |
| 1626 | Register scratch = a4; |
| 1627 | __ LoadRoot(a1, Heap::kUndefinedValueRootIndex); |
| 1628 | __ mov(a2, a1); |
| 1629 | __ mov(a3, a1); |
| 1630 | __ dsll(scratch, a0, kPointerSizeLog2); |
| 1631 | __ mov(a0, scratch); |
| 1632 | __ Dsubu(a0, a0, Operand(kPointerSize)); |
| 1633 | __ Branch(&no_arg, lt, a0, Operand(zero_reg)); |
| 1634 | __ Daddu(a0, sp, Operand(a0)); |
| 1635 | __ ld(a1, MemOperand(a0)); // target |
| 1636 | __ Dsubu(a0, a0, Operand(kPointerSize)); |
| 1637 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1638 | __ ld(a2, MemOperand(a0)); // thisArgument |
| 1639 | __ Dsubu(a0, a0, Operand(kPointerSize)); |
| 1640 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1641 | __ ld(a3, MemOperand(a0)); // argumentsList |
| 1642 | __ bind(&no_arg); |
| 1643 | __ Daddu(sp, sp, Operand(scratch)); |
| 1644 | __ sd(a2, MemOperand(sp)); |
| 1645 | __ mov(a0, a3); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1646 | } |
| 1647 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1648 | // ----------- S t a t e ------------- |
| 1649 | // -- a0 : argumentsList |
| 1650 | // -- a1 : target |
| 1651 | // -- sp[0] : thisArgument |
| 1652 | // ----------------------------------- |
| 1653 | |
| 1654 | // 2. Make sure the target is actually callable. |
| 1655 | Label target_not_callable; |
| 1656 | __ JumpIfSmi(a1, &target_not_callable); |
| 1657 | __ ld(a4, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 1658 | __ lbu(a4, FieldMemOperand(a4, Map::kBitFieldOffset)); |
| 1659 | __ And(a4, a4, Operand(1 << Map::kIsCallable)); |
| 1660 | __ Branch(&target_not_callable, eq, a4, Operand(zero_reg)); |
| 1661 | |
| 1662 | // 3a. Apply the target to the given argumentsList (passing undefined for |
| 1663 | // new.target). |
| 1664 | __ LoadRoot(a3, Heap::kUndefinedValueRootIndex); |
| 1665 | __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); |
| 1666 | |
| 1667 | // 3b. The target is not callable, throw an appropriate TypeError. |
| 1668 | __ bind(&target_not_callable); |
| 1669 | { |
| 1670 | __ sd(a1, MemOperand(sp)); |
| 1671 | __ TailCallRuntime(Runtime::kThrowApplyNonFunction); |
| 1672 | } |
| 1673 | } |
| 1674 | |
| 1675 | |
| 1676 | void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) { |
| 1677 | // ----------- S t a t e ------------- |
| 1678 | // -- a0 : argc |
| 1679 | // -- sp[0] : new.target (optional) |
| 1680 | // -- sp[4] : argumentsList |
| 1681 | // -- sp[8] : target |
| 1682 | // -- sp[12] : receiver |
| 1683 | // ----------------------------------- |
| 1684 | |
| 1685 | // 1. Load target into a1 (if present), argumentsList into a0 (if present), |
| 1686 | // new.target into a3 (if present, otherwise use target), remove all |
| 1687 | // arguments from the stack (including the receiver), and push thisArgument |
| 1688 | // (if present) instead. |
| 1689 | { |
| 1690 | Label no_arg; |
| 1691 | Register scratch = a4; |
| 1692 | __ LoadRoot(a1, Heap::kUndefinedValueRootIndex); |
| 1693 | __ mov(a2, a1); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1694 | // Dlsa() cannot be used hare as scratch value used later. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1695 | __ dsll(scratch, a0, kPointerSizeLog2); |
| 1696 | __ Daddu(a0, sp, Operand(scratch)); |
| 1697 | __ sd(a2, MemOperand(a0)); // receiver |
| 1698 | __ Dsubu(a0, a0, Operand(kPointerSize)); |
| 1699 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1700 | __ ld(a1, MemOperand(a0)); // target |
| 1701 | __ mov(a3, a1); // new.target defaults to target |
| 1702 | __ Dsubu(a0, a0, Operand(kPointerSize)); |
| 1703 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1704 | __ ld(a2, MemOperand(a0)); // argumentsList |
| 1705 | __ Dsubu(a0, a0, Operand(kPointerSize)); |
| 1706 | __ Branch(&no_arg, lt, a0, Operand(sp)); |
| 1707 | __ ld(a3, MemOperand(a0)); // new.target |
| 1708 | __ bind(&no_arg); |
| 1709 | __ Daddu(sp, sp, Operand(scratch)); |
| 1710 | __ mov(a0, a2); |
| 1711 | } |
| 1712 | |
| 1713 | // ----------- S t a t e ------------- |
| 1714 | // -- a0 : argumentsList |
| 1715 | // -- a3 : new.target |
| 1716 | // -- a1 : target |
| 1717 | // -- sp[0] : receiver (undefined) |
| 1718 | // ----------------------------------- |
| 1719 | |
| 1720 | // 2. Make sure the target is actually a constructor. |
| 1721 | Label target_not_constructor; |
| 1722 | __ JumpIfSmi(a1, &target_not_constructor); |
| 1723 | __ ld(a4, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 1724 | __ lbu(a4, FieldMemOperand(a4, Map::kBitFieldOffset)); |
| 1725 | __ And(a4, a4, Operand(1 << Map::kIsConstructor)); |
| 1726 | __ Branch(&target_not_constructor, eq, a4, Operand(zero_reg)); |
| 1727 | |
| 1728 | // 3. Make sure the target is actually a constructor. |
| 1729 | Label new_target_not_constructor; |
| 1730 | __ JumpIfSmi(a3, &new_target_not_constructor); |
| 1731 | __ ld(a4, FieldMemOperand(a3, HeapObject::kMapOffset)); |
| 1732 | __ lbu(a4, FieldMemOperand(a4, Map::kBitFieldOffset)); |
| 1733 | __ And(a4, a4, Operand(1 << Map::kIsConstructor)); |
| 1734 | __ Branch(&new_target_not_constructor, eq, a4, Operand(zero_reg)); |
| 1735 | |
| 1736 | // 4a. Construct the target with the given new.target and argumentsList. |
| 1737 | __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); |
| 1738 | |
| 1739 | // 4b. The target is not a constructor, throw an appropriate TypeError. |
| 1740 | __ bind(&target_not_constructor); |
| 1741 | { |
| 1742 | __ sd(a1, MemOperand(sp)); |
| 1743 | __ TailCallRuntime(Runtime::kThrowCalledNonCallable); |
| 1744 | } |
| 1745 | |
| 1746 | // 4c. The new.target is not a constructor, throw an appropriate TypeError. |
| 1747 | __ bind(&new_target_not_constructor); |
| 1748 | { |
| 1749 | __ sd(a3, MemOperand(sp)); |
| 1750 | __ TailCallRuntime(Runtime::kThrowCalledNonCallable); |
| 1751 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1752 | } |
| 1753 | |
| 1754 | |
| 1755 | static void ArgumentAdaptorStackCheck(MacroAssembler* masm, |
| 1756 | Label* stack_overflow) { |
| 1757 | // ----------- S t a t e ------------- |
| 1758 | // -- a0 : actual number of arguments |
| 1759 | // -- a1 : function (passed through to callee) |
| 1760 | // -- a2 : expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1761 | // -- a3 : new target (passed through to callee) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1762 | // ----------------------------------- |
| 1763 | // Check the stack for overflow. We are not trying to catch |
| 1764 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 1765 | // limit" is checked. |
| 1766 | __ LoadRoot(a5, Heap::kRealStackLimitRootIndex); |
| 1767 | // Make a5 the space we have left. The stack might already be overflowed |
| 1768 | // here which will cause a5 to become negative. |
| 1769 | __ dsubu(a5, sp, a5); |
| 1770 | // Check if the arguments will overflow the stack. |
| 1771 | __ dsll(at, a2, kPointerSizeLog2); |
| 1772 | // Signed comparison. |
| 1773 | __ Branch(stack_overflow, le, a5, Operand(at)); |
| 1774 | } |
| 1775 | |
| 1776 | |
| 1777 | static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1778 | // __ sll(a0, a0, kSmiTagSize); |
| 1779 | __ dsll32(a0, a0, 0); |
| 1780 | __ li(a4, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 1781 | __ MultiPush(a0.bit() | a1.bit() | a4.bit() | fp.bit() | ra.bit()); |
| 1782 | __ Daddu(fp, sp, |
| 1783 | Operand(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize)); |
| 1784 | } |
| 1785 | |
| 1786 | |
| 1787 | static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1788 | // ----------- S t a t e ------------- |
| 1789 | // -- v0 : result being passed through |
| 1790 | // ----------------------------------- |
| 1791 | // Get the number of arguments passed (as a smi), tear down the frame and |
| 1792 | // then tear down the parameters. |
| 1793 | __ ld(a1, MemOperand(fp, -(StandardFrameConstants::kFixedFrameSizeFromFp + |
| 1794 | kPointerSize))); |
| 1795 | __ mov(sp, fp); |
| 1796 | __ MultiPop(fp.bit() | ra.bit()); |
| 1797 | __ SmiScale(a4, a1, kPointerSizeLog2); |
| 1798 | __ Daddu(sp, sp, a4); |
| 1799 | // Adjust for the receiver. |
| 1800 | __ Daddu(sp, sp, Operand(kPointerSize)); |
| 1801 | } |
| 1802 | |
| 1803 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1804 | // static |
| 1805 | void Builtins::Generate_Apply(MacroAssembler* masm) { |
| 1806 | // ----------- S t a t e ------------- |
| 1807 | // -- a0 : argumentsList |
| 1808 | // -- a1 : target |
| 1809 | // -- a3 : new.target (checked to be constructor or undefined) |
| 1810 | // -- sp[0] : thisArgument |
| 1811 | // ----------------------------------- |
| 1812 | |
| 1813 | // Create the list of arguments from the array-like argumentsList. |
| 1814 | { |
| 1815 | Label create_arguments, create_array, create_runtime, done_create; |
| 1816 | __ JumpIfSmi(a0, &create_runtime); |
| 1817 | |
| 1818 | // Load the map of argumentsList into a2. |
| 1819 | __ ld(a2, FieldMemOperand(a0, HeapObject::kMapOffset)); |
| 1820 | |
| 1821 | // Load native context into a4. |
| 1822 | __ ld(a4, NativeContextMemOperand()); |
| 1823 | |
| 1824 | // Check if argumentsList is an (unmodified) arguments object. |
| 1825 | __ ld(at, ContextMemOperand(a4, Context::SLOPPY_ARGUMENTS_MAP_INDEX)); |
| 1826 | __ Branch(&create_arguments, eq, a2, Operand(at)); |
| 1827 | __ ld(at, ContextMemOperand(a4, Context::STRICT_ARGUMENTS_MAP_INDEX)); |
| 1828 | __ Branch(&create_arguments, eq, a2, Operand(at)); |
| 1829 | |
| 1830 | // Check if argumentsList is a fast JSArray. |
| 1831 | __ ld(v0, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 1832 | __ lbu(v0, FieldMemOperand(v0, Map::kInstanceTypeOffset)); |
| 1833 | __ Branch(&create_array, eq, v0, Operand(JS_ARRAY_TYPE)); |
| 1834 | |
| 1835 | // Ask the runtime to create the list (actually a FixedArray). |
| 1836 | __ bind(&create_runtime); |
| 1837 | { |
| 1838 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1839 | __ Push(a1, a3, a0); |
| 1840 | __ CallRuntime(Runtime::kCreateListFromArrayLike); |
| 1841 | __ mov(a0, v0); |
| 1842 | __ Pop(a1, a3); |
| 1843 | __ ld(a2, FieldMemOperand(v0, FixedArray::kLengthOffset)); |
| 1844 | __ SmiUntag(a2); |
| 1845 | } |
| 1846 | __ Branch(&done_create); |
| 1847 | |
| 1848 | // Try to create the list from an arguments object. |
| 1849 | __ bind(&create_arguments); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1850 | __ ld(a2, FieldMemOperand(a0, JSArgumentsObject::kLengthOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1851 | __ ld(a4, FieldMemOperand(a0, JSObject::kElementsOffset)); |
| 1852 | __ ld(at, FieldMemOperand(a4, FixedArray::kLengthOffset)); |
| 1853 | __ Branch(&create_runtime, ne, a2, Operand(at)); |
| 1854 | __ SmiUntag(a2); |
| 1855 | __ mov(a0, a4); |
| 1856 | __ Branch(&done_create); |
| 1857 | |
| 1858 | // Try to create the list from a JSArray object. |
| 1859 | __ bind(&create_array); |
| 1860 | __ ld(a2, FieldMemOperand(a2, Map::kBitField2Offset)); |
| 1861 | __ DecodeField<Map::ElementsKindBits>(a2); |
| 1862 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 1863 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 1864 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 1865 | __ Branch(&create_runtime, hi, a2, Operand(FAST_ELEMENTS)); |
| 1866 | __ Branch(&create_runtime, eq, a2, Operand(FAST_HOLEY_SMI_ELEMENTS)); |
| 1867 | __ ld(a2, FieldMemOperand(a0, JSArray::kLengthOffset)); |
| 1868 | __ ld(a0, FieldMemOperand(a0, JSArray::kElementsOffset)); |
| 1869 | __ SmiUntag(a2); |
| 1870 | |
| 1871 | __ bind(&done_create); |
| 1872 | } |
| 1873 | |
| 1874 | // Check for stack overflow. |
| 1875 | { |
| 1876 | // Check the stack for overflow. We are not trying to catch interruptions |
| 1877 | // (i.e. debug break and preemption) here, so check the "real stack limit". |
| 1878 | Label done; |
| 1879 | __ LoadRoot(a4, Heap::kRealStackLimitRootIndex); |
| 1880 | // Make ip the space we have left. The stack might already be overflowed |
| 1881 | // here which will cause ip to become negative. |
| 1882 | __ Dsubu(a4, sp, a4); |
| 1883 | // Check if the arguments will overflow the stack. |
| 1884 | __ dsll(at, a2, kPointerSizeLog2); |
| 1885 | __ Branch(&done, gt, a4, Operand(at)); // Signed comparison. |
| 1886 | __ TailCallRuntime(Runtime::kThrowStackOverflow); |
| 1887 | __ bind(&done); |
| 1888 | } |
| 1889 | |
| 1890 | // ----------- S t a t e ------------- |
| 1891 | // -- a1 : target |
| 1892 | // -- a0 : args (a FixedArray built from argumentsList) |
| 1893 | // -- a2 : len (number of elements to push from args) |
| 1894 | // -- a3 : new.target (checked to be constructor or undefined) |
| 1895 | // -- sp[0] : thisArgument |
| 1896 | // ----------------------------------- |
| 1897 | |
| 1898 | // Push arguments onto the stack (thisArgument is already on the stack). |
| 1899 | { |
| 1900 | __ mov(a4, zero_reg); |
| 1901 | Label done, loop; |
| 1902 | __ bind(&loop); |
| 1903 | __ Branch(&done, eq, a4, Operand(a2)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1904 | __ Dlsa(at, a0, a4, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1905 | __ ld(at, FieldMemOperand(at, FixedArray::kHeaderSize)); |
| 1906 | __ Push(at); |
| 1907 | __ Daddu(a4, a4, Operand(1)); |
| 1908 | __ Branch(&loop); |
| 1909 | __ bind(&done); |
| 1910 | __ Move(a0, a4); |
| 1911 | } |
| 1912 | |
| 1913 | // Dispatch to Call or Construct depending on whether new.target is undefined. |
| 1914 | { |
| 1915 | Label construct; |
| 1916 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 1917 | __ Branch(&construct, ne, a3, Operand(at)); |
| 1918 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
| 1919 | __ bind(&construct); |
| 1920 | __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
| 1921 | } |
| 1922 | } |
| 1923 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1924 | namespace { |
| 1925 | |
| 1926 | // Drops top JavaScript frame and an arguments adaptor frame below it (if |
| 1927 | // present) preserving all the arguments prepared for current call. |
| 1928 | // Does nothing if debugger is currently active. |
| 1929 | // ES6 14.6.3. PrepareForTailCall |
| 1930 | // |
| 1931 | // Stack structure for the function g() tail calling f(): |
| 1932 | // |
| 1933 | // ------- Caller frame: ------- |
| 1934 | // | ... |
| 1935 | // | g()'s arg M |
| 1936 | // | ... |
| 1937 | // | g()'s arg 1 |
| 1938 | // | g()'s receiver arg |
| 1939 | // | g()'s caller pc |
| 1940 | // ------- g()'s frame: ------- |
| 1941 | // | g()'s caller fp <- fp |
| 1942 | // | g()'s context |
| 1943 | // | function pointer: g |
| 1944 | // | ------------------------- |
| 1945 | // | ... |
| 1946 | // | ... |
| 1947 | // | f()'s arg N |
| 1948 | // | ... |
| 1949 | // | f()'s arg 1 |
| 1950 | // | f()'s receiver arg <- sp (f()'s caller pc is not on the stack yet!) |
| 1951 | // ---------------------- |
| 1952 | // |
| 1953 | void PrepareForTailCall(MacroAssembler* masm, Register args_reg, |
| 1954 | Register scratch1, Register scratch2, |
| 1955 | Register scratch3) { |
| 1956 | DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3)); |
| 1957 | Comment cmnt(masm, "[ PrepareForTailCall"); |
| 1958 | |
| 1959 | // Prepare for tail call only if the debugger is not active. |
| 1960 | Label done; |
| 1961 | ExternalReference debug_is_active = |
| 1962 | ExternalReference::debug_is_active_address(masm->isolate()); |
| 1963 | __ li(at, Operand(debug_is_active)); |
| 1964 | __ lb(scratch1, MemOperand(at)); |
| 1965 | __ Branch(&done, ne, scratch1, Operand(zero_reg)); |
| 1966 | |
| 1967 | // Drop possible interpreter handler/stub frame. |
| 1968 | { |
| 1969 | Label no_interpreter_frame; |
| 1970 | __ ld(scratch3, MemOperand(fp, StandardFrameConstants::kMarkerOffset)); |
| 1971 | __ Branch(&no_interpreter_frame, ne, scratch3, |
| 1972 | Operand(Smi::FromInt(StackFrame::STUB))); |
| 1973 | __ ld(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 1974 | __ bind(&no_interpreter_frame); |
| 1975 | } |
| 1976 | |
| 1977 | // Check if next frame is an arguments adaptor frame. |
| 1978 | Label no_arguments_adaptor, formal_parameter_count_loaded; |
| 1979 | __ ld(scratch2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 1980 | __ ld(scratch3, MemOperand(scratch2, StandardFrameConstants::kContextOffset)); |
| 1981 | __ Branch(&no_arguments_adaptor, ne, scratch3, |
| 1982 | Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 1983 | |
| 1984 | // Drop arguments adaptor frame and load arguments count. |
| 1985 | __ mov(fp, scratch2); |
| 1986 | __ ld(scratch1, |
| 1987 | MemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 1988 | __ SmiUntag(scratch1); |
| 1989 | __ Branch(&formal_parameter_count_loaded); |
| 1990 | |
| 1991 | __ bind(&no_arguments_adaptor); |
| 1992 | // Load caller's formal parameter count |
| 1993 | __ ld(scratch1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1994 | __ ld(scratch1, |
| 1995 | FieldMemOperand(scratch1, JSFunction::kSharedFunctionInfoOffset)); |
| 1996 | __ lw(scratch1, |
| 1997 | FieldMemOperand(scratch1, |
| 1998 | SharedFunctionInfo::kFormalParameterCountOffset)); |
| 1999 | |
| 2000 | __ bind(&formal_parameter_count_loaded); |
| 2001 | |
| 2002 | // Calculate the end of destination area where we will put the arguments |
| 2003 | // after we drop current frame. We add kPointerSize to count the receiver |
| 2004 | // argument which is not included into formal parameters count. |
| 2005 | Register dst_reg = scratch2; |
| 2006 | __ Dlsa(dst_reg, fp, scratch1, kPointerSizeLog2); |
| 2007 | __ Daddu(dst_reg, dst_reg, |
| 2008 | Operand(StandardFrameConstants::kCallerSPOffset + kPointerSize)); |
| 2009 | |
| 2010 | Register src_reg = scratch1; |
| 2011 | __ Dlsa(src_reg, sp, args_reg, kPointerSizeLog2); |
| 2012 | // Count receiver argument as well (not included in args_reg). |
| 2013 | __ Daddu(src_reg, src_reg, Operand(kPointerSize)); |
| 2014 | |
| 2015 | if (FLAG_debug_code) { |
| 2016 | __ Check(lo, kStackAccessBelowStackPointer, src_reg, Operand(dst_reg)); |
| 2017 | } |
| 2018 | |
| 2019 | // Restore caller's frame pointer and return address now as they will be |
| 2020 | // overwritten by the copying loop. |
| 2021 | __ ld(ra, MemOperand(fp, StandardFrameConstants::kCallerPCOffset)); |
| 2022 | __ ld(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 2023 | |
| 2024 | // Now copy callee arguments to the caller frame going backwards to avoid |
| 2025 | // callee arguments corruption (source and destination areas could overlap). |
| 2026 | |
| 2027 | // Both src_reg and dst_reg are pointing to the word after the one to copy, |
| 2028 | // so they must be pre-decremented in the loop. |
| 2029 | Register tmp_reg = scratch3; |
| 2030 | Label loop, entry; |
| 2031 | __ Branch(&entry); |
| 2032 | __ bind(&loop); |
| 2033 | __ Dsubu(src_reg, src_reg, Operand(kPointerSize)); |
| 2034 | __ Dsubu(dst_reg, dst_reg, Operand(kPointerSize)); |
| 2035 | __ ld(tmp_reg, MemOperand(src_reg)); |
| 2036 | __ sd(tmp_reg, MemOperand(dst_reg)); |
| 2037 | __ bind(&entry); |
| 2038 | __ Branch(&loop, ne, sp, Operand(src_reg)); |
| 2039 | |
| 2040 | // Leave current frame. |
| 2041 | __ mov(sp, dst_reg); |
| 2042 | |
| 2043 | __ bind(&done); |
| 2044 | } |
| 2045 | } // namespace |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2046 | |
| 2047 | // static |
| 2048 | void Builtins::Generate_CallFunction(MacroAssembler* masm, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2049 | ConvertReceiverMode mode, |
| 2050 | TailCallMode tail_call_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2051 | // ----------- S t a t e ------------- |
| 2052 | // -- a0 : the number of arguments (not including the receiver) |
| 2053 | // -- a1 : the function to call (checked to be a JSFunction) |
| 2054 | // ----------------------------------- |
| 2055 | __ AssertFunction(a1); |
| 2056 | |
| 2057 | // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList) |
| 2058 | // Check that function is not a "classConstructor". |
| 2059 | Label class_constructor; |
| 2060 | __ ld(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 2061 | __ lbu(a3, FieldMemOperand(a2, SharedFunctionInfo::kFunctionKindByteOffset)); |
| 2062 | __ And(at, a3, Operand(SharedFunctionInfo::kClassConstructorBitsWithinByte)); |
| 2063 | __ Branch(&class_constructor, ne, at, Operand(zero_reg)); |
| 2064 | |
| 2065 | // Enter the context of the function; ToObject has to run in the function |
| 2066 | // context, and we also need to take the global proxy from the function |
| 2067 | // context in case of conversion. |
| 2068 | STATIC_ASSERT(SharedFunctionInfo::kNativeByteOffset == |
| 2069 | SharedFunctionInfo::kStrictModeByteOffset); |
| 2070 | __ ld(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 2071 | // We need to convert the receiver for non-native sloppy mode functions. |
| 2072 | Label done_convert; |
| 2073 | __ lbu(a3, FieldMemOperand(a2, SharedFunctionInfo::kNativeByteOffset)); |
| 2074 | __ And(at, a3, Operand((1 << SharedFunctionInfo::kNativeBitWithinByte) | |
| 2075 | (1 << SharedFunctionInfo::kStrictModeBitWithinByte))); |
| 2076 | __ Branch(&done_convert, ne, at, Operand(zero_reg)); |
| 2077 | { |
| 2078 | // ----------- S t a t e ------------- |
| 2079 | // -- a0 : the number of arguments (not including the receiver) |
| 2080 | // -- a1 : the function to call (checked to be a JSFunction) |
| 2081 | // -- a2 : the shared function info. |
| 2082 | // -- cp : the function context. |
| 2083 | // ----------------------------------- |
| 2084 | |
| 2085 | if (mode == ConvertReceiverMode::kNullOrUndefined) { |
| 2086 | // Patch receiver to global proxy. |
| 2087 | __ LoadGlobalProxy(a3); |
| 2088 | } else { |
| 2089 | Label convert_to_object, convert_receiver; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2090 | __ Dlsa(at, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2091 | __ ld(a3, MemOperand(at)); |
| 2092 | __ JumpIfSmi(a3, &convert_to_object); |
| 2093 | STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| 2094 | __ GetObjectType(a3, a4, a4); |
| 2095 | __ Branch(&done_convert, hs, a4, Operand(FIRST_JS_RECEIVER_TYPE)); |
| 2096 | if (mode != ConvertReceiverMode::kNotNullOrUndefined) { |
| 2097 | Label convert_global_proxy; |
| 2098 | __ JumpIfRoot(a3, Heap::kUndefinedValueRootIndex, |
| 2099 | &convert_global_proxy); |
| 2100 | __ JumpIfNotRoot(a3, Heap::kNullValueRootIndex, &convert_to_object); |
| 2101 | __ bind(&convert_global_proxy); |
| 2102 | { |
| 2103 | // Patch receiver to global proxy. |
| 2104 | __ LoadGlobalProxy(a3); |
| 2105 | } |
| 2106 | __ Branch(&convert_receiver); |
| 2107 | } |
| 2108 | __ bind(&convert_to_object); |
| 2109 | { |
| 2110 | // Convert receiver using ToObject. |
| 2111 | // TODO(bmeurer): Inline the allocation here to avoid building the frame |
| 2112 | // in the fast case? (fall back to AllocateInNewSpace?) |
| 2113 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 2114 | __ SmiTag(a0); |
| 2115 | __ Push(a0, a1); |
| 2116 | __ mov(a0, a3); |
| 2117 | ToObjectStub stub(masm->isolate()); |
| 2118 | __ CallStub(&stub); |
| 2119 | __ mov(a3, v0); |
| 2120 | __ Pop(a0, a1); |
| 2121 | __ SmiUntag(a0); |
| 2122 | } |
| 2123 | __ ld(a2, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 2124 | __ bind(&convert_receiver); |
| 2125 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2126 | __ Dlsa(at, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2127 | __ sd(a3, MemOperand(at)); |
| 2128 | } |
| 2129 | __ bind(&done_convert); |
| 2130 | |
| 2131 | // ----------- S t a t e ------------- |
| 2132 | // -- a0 : the number of arguments (not including the receiver) |
| 2133 | // -- a1 : the function to call (checked to be a JSFunction) |
| 2134 | // -- a2 : the shared function info. |
| 2135 | // -- cp : the function context. |
| 2136 | // ----------------------------------- |
| 2137 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2138 | if (tail_call_mode == TailCallMode::kAllow) { |
| 2139 | PrepareForTailCall(masm, a0, t0, t1, t2); |
| 2140 | } |
| 2141 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2142 | __ lw(a2, |
| 2143 | FieldMemOperand(a2, SharedFunctionInfo::kFormalParameterCountOffset)); |
| 2144 | ParameterCount actual(a0); |
| 2145 | ParameterCount expected(a2); |
| 2146 | __ InvokeFunctionCode(a1, no_reg, expected, actual, JUMP_FUNCTION, |
| 2147 | CheckDebugStepCallWrapper()); |
| 2148 | |
| 2149 | // The function is a "classConstructor", need to raise an exception. |
| 2150 | __ bind(&class_constructor); |
| 2151 | { |
| 2152 | FrameScope frame(masm, StackFrame::INTERNAL); |
| 2153 | __ Push(a1); |
| 2154 | __ CallRuntime(Runtime::kThrowConstructorNonCallableError); |
| 2155 | } |
| 2156 | } |
| 2157 | |
| 2158 | |
| 2159 | // static |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2160 | void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm, |
| 2161 | TailCallMode tail_call_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2162 | // ----------- S t a t e ------------- |
| 2163 | // -- a0 : the number of arguments (not including the receiver) |
| 2164 | // -- a1 : the function to call (checked to be a JSBoundFunction) |
| 2165 | // ----------------------------------- |
| 2166 | __ AssertBoundFunction(a1); |
| 2167 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2168 | if (tail_call_mode == TailCallMode::kAllow) { |
| 2169 | PrepareForTailCall(masm, a0, t0, t1, t2); |
| 2170 | } |
| 2171 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2172 | // Patch the receiver to [[BoundThis]]. |
| 2173 | { |
| 2174 | __ ld(at, FieldMemOperand(a1, JSBoundFunction::kBoundThisOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2175 | __ Dlsa(a4, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2176 | __ sd(at, MemOperand(a4)); |
| 2177 | } |
| 2178 | |
| 2179 | // Load [[BoundArguments]] into a2 and length of that into a4. |
| 2180 | __ ld(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset)); |
| 2181 | __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset)); |
| 2182 | __ SmiUntag(a4); |
| 2183 | |
| 2184 | // ----------- S t a t e ------------- |
| 2185 | // -- a0 : the number of arguments (not including the receiver) |
| 2186 | // -- a1 : the function to call (checked to be a JSBoundFunction) |
| 2187 | // -- a2 : the [[BoundArguments]] (implemented as FixedArray) |
| 2188 | // -- a4 : the number of [[BoundArguments]] |
| 2189 | // ----------------------------------- |
| 2190 | |
| 2191 | // Reserve stack space for the [[BoundArguments]]. |
| 2192 | { |
| 2193 | Label done; |
| 2194 | __ dsll(a5, a4, kPointerSizeLog2); |
| 2195 | __ Dsubu(sp, sp, Operand(a5)); |
| 2196 | // Check the stack for overflow. We are not trying to catch interruptions |
| 2197 | // (i.e. debug break and preemption) here, so check the "real stack limit". |
| 2198 | __ LoadRoot(at, Heap::kRealStackLimitRootIndex); |
| 2199 | __ Branch(&done, gt, sp, Operand(at)); // Signed comparison. |
| 2200 | // Restore the stack pointer. |
| 2201 | __ Daddu(sp, sp, Operand(a5)); |
| 2202 | { |
| 2203 | FrameScope scope(masm, StackFrame::MANUAL); |
| 2204 | __ EnterFrame(StackFrame::INTERNAL); |
| 2205 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 2206 | } |
| 2207 | __ bind(&done); |
| 2208 | } |
| 2209 | |
| 2210 | // Relocate arguments down the stack. |
| 2211 | { |
| 2212 | Label loop, done_loop; |
| 2213 | __ mov(a5, zero_reg); |
| 2214 | __ bind(&loop); |
| 2215 | __ Branch(&done_loop, gt, a5, Operand(a0)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2216 | __ Dlsa(a6, sp, a4, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2217 | __ ld(at, MemOperand(a6)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2218 | __ Dlsa(a6, sp, a5, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2219 | __ sd(at, MemOperand(a6)); |
| 2220 | __ Daddu(a4, a4, Operand(1)); |
| 2221 | __ Daddu(a5, a5, Operand(1)); |
| 2222 | __ Branch(&loop); |
| 2223 | __ bind(&done_loop); |
| 2224 | } |
| 2225 | |
| 2226 | // Copy [[BoundArguments]] to the stack (below the arguments). |
| 2227 | { |
| 2228 | Label loop, done_loop; |
| 2229 | __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset)); |
| 2230 | __ SmiUntag(a4); |
| 2231 | __ Daddu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 2232 | __ bind(&loop); |
| 2233 | __ Dsubu(a4, a4, Operand(1)); |
| 2234 | __ Branch(&done_loop, lt, a4, Operand(zero_reg)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2235 | __ Dlsa(a5, a2, a4, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2236 | __ ld(at, MemOperand(a5)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2237 | __ Dlsa(a5, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2238 | __ sd(at, MemOperand(a5)); |
| 2239 | __ Daddu(a0, a0, Operand(1)); |
| 2240 | __ Branch(&loop); |
| 2241 | __ bind(&done_loop); |
| 2242 | } |
| 2243 | |
| 2244 | // Call the [[BoundTargetFunction]] via the Call builtin. |
| 2245 | __ ld(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset)); |
| 2246 | __ li(at, Operand(ExternalReference(Builtins::kCall_ReceiverIsAny, |
| 2247 | masm->isolate()))); |
| 2248 | __ ld(at, MemOperand(at)); |
| 2249 | __ Daddu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2250 | __ Jump(at); |
| 2251 | } |
| 2252 | |
| 2253 | |
| 2254 | // static |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2255 | void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode, |
| 2256 | TailCallMode tail_call_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2257 | // ----------- S t a t e ------------- |
| 2258 | // -- a0 : the number of arguments (not including the receiver) |
| 2259 | // -- a1 : the target to call (can be any Object). |
| 2260 | // ----------------------------------- |
| 2261 | |
| 2262 | Label non_callable, non_function, non_smi; |
| 2263 | __ JumpIfSmi(a1, &non_callable); |
| 2264 | __ bind(&non_smi); |
| 2265 | __ GetObjectType(a1, t1, t2); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2266 | __ Jump(masm->isolate()->builtins()->CallFunction(mode, tail_call_mode), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2267 | RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2268 | __ Jump(masm->isolate()->builtins()->CallBoundFunction(tail_call_mode), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2269 | RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2270 | |
| 2271 | // Check if target has a [[Call]] internal method. |
| 2272 | __ lbu(t1, FieldMemOperand(t1, Map::kBitFieldOffset)); |
| 2273 | __ And(t1, t1, Operand(1 << Map::kIsCallable)); |
| 2274 | __ Branch(&non_callable, eq, t1, Operand(zero_reg)); |
| 2275 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2276 | __ Branch(&non_function, ne, t2, Operand(JS_PROXY_TYPE)); |
| 2277 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2278 | // 0. Prepare for tail call if necessary. |
| 2279 | if (tail_call_mode == TailCallMode::kAllow) { |
| 2280 | PrepareForTailCall(masm, a0, t0, t1, t2); |
| 2281 | } |
| 2282 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2283 | // 1. Runtime fallback for Proxy [[Call]]. |
| 2284 | __ Push(a1); |
| 2285 | // Increase the arguments size to include the pushed function and the |
| 2286 | // existing receiver on the stack. |
| 2287 | __ Daddu(a0, a0, 2); |
| 2288 | // Tail-call to the runtime. |
| 2289 | __ JumpToExternalReference( |
| 2290 | ExternalReference(Runtime::kJSProxyCall, masm->isolate())); |
| 2291 | |
| 2292 | // 2. Call to something else, which might have a [[Call]] internal method (if |
| 2293 | // not we raise an exception). |
| 2294 | __ bind(&non_function); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2295 | // Overwrite the original receiver with the (original) target. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2296 | __ Dlsa(at, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2297 | __ sd(a1, MemOperand(at)); |
| 2298 | // Let the "call_as_function_delegate" take care of the rest. |
| 2299 | __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, a1); |
| 2300 | __ Jump(masm->isolate()->builtins()->CallFunction( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2301 | ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2302 | RelocInfo::CODE_TARGET); |
| 2303 | |
| 2304 | // 3. Call to something that is not callable. |
| 2305 | __ bind(&non_callable); |
| 2306 | { |
| 2307 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 2308 | __ Push(a1); |
| 2309 | __ CallRuntime(Runtime::kThrowCalledNonCallable); |
| 2310 | } |
| 2311 | } |
| 2312 | |
| 2313 | |
| 2314 | void Builtins::Generate_ConstructFunction(MacroAssembler* masm) { |
| 2315 | // ----------- S t a t e ------------- |
| 2316 | // -- a0 : the number of arguments (not including the receiver) |
| 2317 | // -- a1 : the constructor to call (checked to be a JSFunction) |
| 2318 | // -- a3 : the new target (checked to be a constructor) |
| 2319 | // ----------------------------------- |
| 2320 | __ AssertFunction(a1); |
| 2321 | |
| 2322 | // Calling convention for function specific ConstructStubs require |
| 2323 | // a2 to contain either an AllocationSite or undefined. |
| 2324 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| 2325 | |
| 2326 | // Tail call to the function-specific construct stub (still in the caller |
| 2327 | // context at this point). |
| 2328 | __ ld(a4, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 2329 | __ ld(a4, FieldMemOperand(a4, SharedFunctionInfo::kConstructStubOffset)); |
| 2330 | __ Daddu(at, a4, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2331 | __ Jump(at); |
| 2332 | } |
| 2333 | |
| 2334 | |
| 2335 | // static |
| 2336 | void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) { |
| 2337 | // ----------- S t a t e ------------- |
| 2338 | // -- a0 : the number of arguments (not including the receiver) |
| 2339 | // -- a1 : the function to call (checked to be a JSBoundFunction) |
| 2340 | // -- a3 : the new target (checked to be a constructor) |
| 2341 | // ----------------------------------- |
| 2342 | __ AssertBoundFunction(a1); |
| 2343 | |
| 2344 | // Load [[BoundArguments]] into a2 and length of that into a4. |
| 2345 | __ ld(a2, FieldMemOperand(a1, JSBoundFunction::kBoundArgumentsOffset)); |
| 2346 | __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset)); |
| 2347 | __ SmiUntag(a4); |
| 2348 | |
| 2349 | // ----------- S t a t e ------------- |
| 2350 | // -- a0 : the number of arguments (not including the receiver) |
| 2351 | // -- a1 : the function to call (checked to be a JSBoundFunction) |
| 2352 | // -- a2 : the [[BoundArguments]] (implemented as FixedArray) |
| 2353 | // -- a3 : the new target (checked to be a constructor) |
| 2354 | // -- a4 : the number of [[BoundArguments]] |
| 2355 | // ----------------------------------- |
| 2356 | |
| 2357 | // Reserve stack space for the [[BoundArguments]]. |
| 2358 | { |
| 2359 | Label done; |
| 2360 | __ dsll(a5, a4, kPointerSizeLog2); |
| 2361 | __ Dsubu(sp, sp, Operand(a5)); |
| 2362 | // Check the stack for overflow. We are not trying to catch interruptions |
| 2363 | // (i.e. debug break and preemption) here, so check the "real stack limit". |
| 2364 | __ LoadRoot(at, Heap::kRealStackLimitRootIndex); |
| 2365 | __ Branch(&done, gt, sp, Operand(at)); // Signed comparison. |
| 2366 | // Restore the stack pointer. |
| 2367 | __ Daddu(sp, sp, Operand(a5)); |
| 2368 | { |
| 2369 | FrameScope scope(masm, StackFrame::MANUAL); |
| 2370 | __ EnterFrame(StackFrame::INTERNAL); |
| 2371 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 2372 | } |
| 2373 | __ bind(&done); |
| 2374 | } |
| 2375 | |
| 2376 | // Relocate arguments down the stack. |
| 2377 | { |
| 2378 | Label loop, done_loop; |
| 2379 | __ mov(a5, zero_reg); |
| 2380 | __ bind(&loop); |
| 2381 | __ Branch(&done_loop, ge, a5, Operand(a0)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2382 | __ Dlsa(a6, sp, a4, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2383 | __ ld(at, MemOperand(a6)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2384 | __ Dlsa(a6, sp, a5, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2385 | __ sd(at, MemOperand(a6)); |
| 2386 | __ Daddu(a4, a4, Operand(1)); |
| 2387 | __ Daddu(a5, a5, Operand(1)); |
| 2388 | __ Branch(&loop); |
| 2389 | __ bind(&done_loop); |
| 2390 | } |
| 2391 | |
| 2392 | // Copy [[BoundArguments]] to the stack (below the arguments). |
| 2393 | { |
| 2394 | Label loop, done_loop; |
| 2395 | __ ld(a4, FieldMemOperand(a2, FixedArray::kLengthOffset)); |
| 2396 | __ SmiUntag(a4); |
| 2397 | __ Daddu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 2398 | __ bind(&loop); |
| 2399 | __ Dsubu(a4, a4, Operand(1)); |
| 2400 | __ Branch(&done_loop, lt, a4, Operand(zero_reg)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2401 | __ Dlsa(a5, a2, a4, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2402 | __ ld(at, MemOperand(a5)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2403 | __ Dlsa(a5, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2404 | __ sd(at, MemOperand(a5)); |
| 2405 | __ Daddu(a0, a0, Operand(1)); |
| 2406 | __ Branch(&loop); |
| 2407 | __ bind(&done_loop); |
| 2408 | } |
| 2409 | |
| 2410 | // Patch new.target to [[BoundTargetFunction]] if new.target equals target. |
| 2411 | { |
| 2412 | Label skip_load; |
| 2413 | __ Branch(&skip_load, ne, a1, Operand(a3)); |
| 2414 | __ ld(a3, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset)); |
| 2415 | __ bind(&skip_load); |
| 2416 | } |
| 2417 | |
| 2418 | // Construct the [[BoundTargetFunction]] via the Construct builtin. |
| 2419 | __ ld(a1, FieldMemOperand(a1, JSBoundFunction::kBoundTargetFunctionOffset)); |
| 2420 | __ li(at, Operand(ExternalReference(Builtins::kConstruct, masm->isolate()))); |
| 2421 | __ ld(at, MemOperand(at)); |
| 2422 | __ Daddu(at, at, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2423 | __ Jump(at); |
| 2424 | } |
| 2425 | |
| 2426 | |
| 2427 | // static |
| 2428 | void Builtins::Generate_ConstructProxy(MacroAssembler* masm) { |
| 2429 | // ----------- S t a t e ------------- |
| 2430 | // -- a0 : the number of arguments (not including the receiver) |
| 2431 | // -- a1 : the constructor to call (checked to be a JSProxy) |
| 2432 | // -- a3 : the new target (either the same as the constructor or |
| 2433 | // the JSFunction on which new was invoked initially) |
| 2434 | // ----------------------------------- |
| 2435 | |
| 2436 | // Call into the Runtime for Proxy [[Construct]]. |
| 2437 | __ Push(a1, a3); |
| 2438 | // Include the pushed new_target, constructor and the receiver. |
| 2439 | __ Daddu(a0, a0, Operand(3)); |
| 2440 | // Tail-call to the runtime. |
| 2441 | __ JumpToExternalReference( |
| 2442 | ExternalReference(Runtime::kJSProxyConstruct, masm->isolate())); |
| 2443 | } |
| 2444 | |
| 2445 | |
| 2446 | // static |
| 2447 | void Builtins::Generate_Construct(MacroAssembler* masm) { |
| 2448 | // ----------- S t a t e ------------- |
| 2449 | // -- a0 : the number of arguments (not including the receiver) |
| 2450 | // -- a1 : the constructor to call (can be any Object) |
| 2451 | // -- a3 : the new target (either the same as the constructor or |
| 2452 | // the JSFunction on which new was invoked initially) |
| 2453 | // ----------------------------------- |
| 2454 | |
| 2455 | // Check if target is a Smi. |
| 2456 | Label non_constructor; |
| 2457 | __ JumpIfSmi(a1, &non_constructor); |
| 2458 | |
| 2459 | // Dispatch based on instance type. |
| 2460 | __ ld(t1, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 2461 | __ lbu(t2, FieldMemOperand(t1, Map::kInstanceTypeOffset)); |
| 2462 | __ Jump(masm->isolate()->builtins()->ConstructFunction(), |
| 2463 | RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE)); |
| 2464 | |
| 2465 | // Check if target has a [[Construct]] internal method. |
| 2466 | __ lbu(t3, FieldMemOperand(t1, Map::kBitFieldOffset)); |
| 2467 | __ And(t3, t3, Operand(1 << Map::kIsConstructor)); |
| 2468 | __ Branch(&non_constructor, eq, t3, Operand(zero_reg)); |
| 2469 | |
| 2470 | // Only dispatch to bound functions after checking whether they are |
| 2471 | // constructors. |
| 2472 | __ Jump(masm->isolate()->builtins()->ConstructBoundFunction(), |
| 2473 | RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE)); |
| 2474 | |
| 2475 | // Only dispatch to proxies after checking whether they are constructors. |
| 2476 | __ Jump(masm->isolate()->builtins()->ConstructProxy(), RelocInfo::CODE_TARGET, |
| 2477 | eq, t2, Operand(JS_PROXY_TYPE)); |
| 2478 | |
| 2479 | // Called Construct on an exotic Object with a [[Construct]] internal method. |
| 2480 | { |
| 2481 | // Overwrite the original receiver with the (original) target. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2482 | __ Dlsa(at, sp, a0, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2483 | __ sd(a1, MemOperand(at)); |
| 2484 | // Let the "call_as_constructor_delegate" take care of the rest. |
| 2485 | __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, a1); |
| 2486 | __ Jump(masm->isolate()->builtins()->CallFunction(), |
| 2487 | RelocInfo::CODE_TARGET); |
| 2488 | } |
| 2489 | |
| 2490 | // Called Construct on an Object that doesn't have a [[Construct]] internal |
| 2491 | // method. |
| 2492 | __ bind(&non_constructor); |
| 2493 | __ Jump(masm->isolate()->builtins()->ConstructedNonConstructable(), |
| 2494 | RelocInfo::CODE_TARGET); |
| 2495 | } |
| 2496 | |
| 2497 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2498 | void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
| 2499 | // State setup as expected by MacroAssembler::InvokePrologue. |
| 2500 | // ----------- S t a t e ------------- |
| 2501 | // -- a0: actual arguments count |
| 2502 | // -- a1: function (passed through to callee) |
| 2503 | // -- a2: expected arguments count |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2504 | // -- a3: new target (passed through to callee) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2505 | // ----------------------------------- |
| 2506 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2507 | Label invoke, dont_adapt_arguments, stack_overflow; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2508 | |
| 2509 | Label enough, too_few; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2510 | __ Branch(&dont_adapt_arguments, eq, |
| 2511 | a2, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel)); |
| 2512 | // We use Uless as the number of argument should always be greater than 0. |
| 2513 | __ Branch(&too_few, Uless, a0, Operand(a2)); |
| 2514 | |
| 2515 | { // Enough parameters: actual >= expected. |
| 2516 | // a0: actual number of arguments as a smi |
| 2517 | // a1: function |
| 2518 | // a2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2519 | // a3: new target (passed through to callee) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2520 | __ bind(&enough); |
| 2521 | EnterArgumentsAdaptorFrame(masm); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2522 | ArgumentAdaptorStackCheck(masm, &stack_overflow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2523 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2524 | // Calculate copy start address into a0 and copy end address into a4. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2525 | __ SmiScale(a0, a0, kPointerSizeLog2); |
| 2526 | __ Daddu(a0, fp, a0); |
| 2527 | // Adjust for return address and receiver. |
| 2528 | __ Daddu(a0, a0, Operand(2 * kPointerSize)); |
| 2529 | // Compute copy end address. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2530 | __ dsll(a4, a2, kPointerSizeLog2); |
| 2531 | __ dsubu(a4, a0, a4); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2532 | |
| 2533 | // Copy the arguments (including the receiver) to the new stack frame. |
| 2534 | // a0: copy start address |
| 2535 | // a1: function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2536 | // a2: expected number of arguments |
| 2537 | // a3: new target (passed through to callee) |
| 2538 | // a4: copy end address |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2539 | |
| 2540 | Label copy; |
| 2541 | __ bind(©); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2542 | __ ld(a5, MemOperand(a0)); |
| 2543 | __ push(a5); |
| 2544 | __ Branch(USE_DELAY_SLOT, ©, ne, a0, Operand(a4)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2545 | __ daddiu(a0, a0, -kPointerSize); // In delay slot. |
| 2546 | |
| 2547 | __ jmp(&invoke); |
| 2548 | } |
| 2549 | |
| 2550 | { // Too few parameters: Actual < expected. |
| 2551 | __ bind(&too_few); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2552 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2553 | // If the function is strong we need to throw an error. |
| 2554 | Label no_strong_error; |
| 2555 | __ ld(a4, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 2556 | __ lbu(a5, FieldMemOperand(a4, SharedFunctionInfo::kStrongModeByteOffset)); |
| 2557 | __ And(a5, a5, Operand(1 << SharedFunctionInfo::kStrongModeBitWithinByte)); |
| 2558 | __ Branch(&no_strong_error, eq, a5, Operand(zero_reg)); |
| 2559 | |
| 2560 | // What we really care about is the required number of arguments. |
| 2561 | DCHECK_EQ(kPointerSize, kInt64Size); |
| 2562 | __ lw(a5, FieldMemOperand(a4, SharedFunctionInfo::kLengthOffset)); |
| 2563 | __ srl(a5, a5, 1); |
| 2564 | __ Branch(&no_strong_error, ge, a0, Operand(a5)); |
| 2565 | |
| 2566 | { |
| 2567 | FrameScope frame(masm, StackFrame::MANUAL); |
| 2568 | EnterArgumentsAdaptorFrame(masm); |
| 2569 | __ CallRuntime(Runtime::kThrowStrongModeTooFewArguments); |
| 2570 | } |
| 2571 | |
| 2572 | __ bind(&no_strong_error); |
| 2573 | EnterArgumentsAdaptorFrame(masm); |
| 2574 | ArgumentAdaptorStackCheck(masm, &stack_overflow); |
| 2575 | |
| 2576 | // Calculate copy start address into a0 and copy end address into a7. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2577 | // a0: actual number of arguments as a smi |
| 2578 | // a1: function |
| 2579 | // a2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2580 | // a3: new target (passed through to callee) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2581 | __ SmiScale(a0, a0, kPointerSizeLog2); |
| 2582 | __ Daddu(a0, fp, a0); |
| 2583 | // Adjust for return address and receiver. |
| 2584 | __ Daddu(a0, a0, Operand(2 * kPointerSize)); |
| 2585 | // Compute copy end address. Also adjust for return address. |
| 2586 | __ Daddu(a7, fp, kPointerSize); |
| 2587 | |
| 2588 | // Copy the arguments (including the receiver) to the new stack frame. |
| 2589 | // a0: copy start address |
| 2590 | // a1: function |
| 2591 | // a2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2592 | // a3: new target (passed through to callee) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2593 | // a7: copy end address |
| 2594 | Label copy; |
| 2595 | __ bind(©); |
| 2596 | __ ld(a4, MemOperand(a0)); // Adjusted above for return addr and receiver. |
| 2597 | __ Dsubu(sp, sp, kPointerSize); |
| 2598 | __ Dsubu(a0, a0, kPointerSize); |
| 2599 | __ Branch(USE_DELAY_SLOT, ©, ne, a0, Operand(a7)); |
| 2600 | __ sd(a4, MemOperand(sp)); // In the delay slot. |
| 2601 | |
| 2602 | // Fill the remaining expected arguments with undefined. |
| 2603 | // a1: function |
| 2604 | // a2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2605 | // a3: new target (passed through to callee) |
| 2606 | __ LoadRoot(a5, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2607 | __ dsll(a6, a2, kPointerSizeLog2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2608 | __ Dsubu(a4, fp, Operand(a6)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2609 | // Adjust for frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2610 | __ Dsubu(a4, a4, Operand(StandardFrameConstants::kFixedFrameSizeFromFp + |
| 2611 | 2 * kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2612 | |
| 2613 | Label fill; |
| 2614 | __ bind(&fill); |
| 2615 | __ Dsubu(sp, sp, kPointerSize); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2616 | __ Branch(USE_DELAY_SLOT, &fill, ne, sp, Operand(a4)); |
| 2617 | __ sd(a5, MemOperand(sp)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2618 | } |
| 2619 | |
| 2620 | // Call the entry point. |
| 2621 | __ bind(&invoke); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2622 | __ mov(a0, a2); |
| 2623 | // a0 : expected number of arguments |
| 2624 | // a1 : function (passed through to callee) |
| 2625 | // a3: new target (passed through to callee) |
| 2626 | __ ld(a4, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); |
| 2627 | __ Call(a4); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2628 | |
| 2629 | // Store offset of return address for deoptimizer. |
| 2630 | masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset()); |
| 2631 | |
| 2632 | // Exit frame and return. |
| 2633 | LeaveArgumentsAdaptorFrame(masm); |
| 2634 | __ Ret(); |
| 2635 | |
| 2636 | |
| 2637 | // ------------------------------------------- |
| 2638 | // Don't adapt arguments. |
| 2639 | // ------------------------------------------- |
| 2640 | __ bind(&dont_adapt_arguments); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2641 | __ ld(a4, FieldMemOperand(a1, JSFunction::kCodeEntryOffset)); |
| 2642 | __ Jump(a4); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2643 | |
| 2644 | __ bind(&stack_overflow); |
| 2645 | { |
| 2646 | FrameScope frame(masm, StackFrame::MANUAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2647 | __ CallRuntime(Runtime::kThrowStackOverflow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2648 | __ break_(0xCC); |
| 2649 | } |
| 2650 | } |
| 2651 | |
| 2652 | |
| 2653 | #undef __ |
| 2654 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2655 | } // namespace internal |
| 2656 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2657 | |
| 2658 | #endif // V8_TARGET_ARCH_MIPS64 |