Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #if V8_TARGET_ARCH_ARM |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include "src/codegen.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 8 | #include "src/debug/debug.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #include "src/deoptimizer.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 10 | #include "src/full-codegen/full-codegen.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 11 | #include "src/runtime/runtime.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 12 | |
| 13 | namespace v8 { |
| 14 | namespace internal { |
| 15 | |
| 16 | |
| 17 | #define __ ACCESS_MASM(masm) |
| 18 | |
| 19 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 20 | void Builtins::Generate_Adaptor(MacroAssembler* masm, |
| 21 | CFunctionId id, |
| 22 | BuiltinExtraArguments extra_args) { |
| 23 | // ----------- S t a t e ------------- |
| 24 | // -- r0 : number of arguments excluding receiver |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 25 | // -- r1 : target |
| 26 | // -- r3 : new.target |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 27 | // -- sp[0] : last argument |
| 28 | // -- ... |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 29 | // -- sp[4 * (argc - 1)] : first argument |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 30 | // -- sp[4 * argc] : receiver |
| 31 | // ----------------------------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 32 | __ AssertFunction(r1); |
| 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 | __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 39 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 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(r1); |
| 45 | ++num_extra_args; |
| 46 | break; |
| 47 | case BuiltinExtraArguments::kNewTarget: |
| 48 | __ Push(r3); |
| 49 | ++num_extra_args; |
| 50 | break; |
| 51 | case BuiltinExtraArguments::kTargetAndNewTarget: |
| 52 | __ Push(r1, r3); |
| 53 | num_extra_args += 2; |
| 54 | break; |
| 55 | case BuiltinExtraArguments::kNone: |
| 56 | break; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 57 | } |
| 58 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 59 | // JumpToExternalReference expects r0 to contain the number of arguments |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 60 | // including the receiver and the extra arguments. |
| 61 | __ add(r0, r0, Operand(num_extra_args + 1)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 62 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 63 | __ JumpToExternalReference(ExternalReference(id, masm->isolate())); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 64 | } |
| 65 | |
| 66 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 67 | // Load the built-in InternalArray function from the current context. |
| 68 | static void GenerateLoadInternalArrayFunction(MacroAssembler* masm, |
| 69 | Register result) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 70 | // Load the InternalArray function from the current native context. |
| 71 | __ LoadNativeContextSlot(Context::INTERNAL_ARRAY_FUNCTION_INDEX, result); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 75 | // Load the built-in Array function from the current context. |
| 76 | static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 77 | // Load the Array function from the current native context. |
| 78 | __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, result); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 79 | } |
| 80 | |
| 81 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 82 | void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) { |
| 83 | // ----------- S t a t e ------------- |
| 84 | // -- r0 : number of arguments |
| 85 | // -- lr : 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, r1); |
| 92 | |
| 93 | if (FLAG_debug_code) { |
| 94 | // Initial map for the builtin InternalArray functions should be maps. |
| 95 | __ ldr(r2, FieldMemOperand(r1, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 96 | __ SmiTst(r2); |
| 97 | __ Assert(ne, kUnexpectedInitialMapForInternalArrayFunction); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 98 | __ CompareObjectType(r2, r3, r4, MAP_TYPE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 99 | __ Assert(eq, kUnexpectedInitialMapForInternalArrayFunction); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | // Run the native code for the InternalArray function called as a normal |
| 103 | // function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 104 | // tail call a stub |
| 105 | InternalArrayConstructorStub stub(masm->isolate()); |
| 106 | __ TailCallStub(&stub); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | |
| 110 | void Builtins::Generate_ArrayCode(MacroAssembler* masm) { |
| 111 | // ----------- S t a t e ------------- |
| 112 | // -- r0 : number of arguments |
| 113 | // -- lr : return address |
| 114 | // -- sp[...]: constructor arguments |
| 115 | // ----------------------------------- |
| 116 | Label generic_array_code, one_or_more_arguments, two_or_more_arguments; |
| 117 | |
| 118 | // Get the Array function. |
| 119 | GenerateLoadArrayFunction(masm, r1); |
| 120 | |
| 121 | if (FLAG_debug_code) { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 122 | // Initial map for the builtin Array functions should be maps. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 123 | __ ldr(r2, FieldMemOperand(r1, JSFunction::kPrototypeOrInitialMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 124 | __ SmiTst(r2); |
| 125 | __ Assert(ne, kUnexpectedInitialMapForArrayFunction); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 126 | __ CompareObjectType(r2, r3, r4, MAP_TYPE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 127 | __ Assert(eq, kUnexpectedInitialMapForArrayFunction); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 128 | } |
| 129 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 130 | __ mov(r3, r1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 131 | // Run the native code for the Array function called as a normal function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 132 | // tail call a stub |
| 133 | __ LoadRoot(r2, Heap::kUndefinedValueRootIndex); |
| 134 | ArrayConstructorStub stub(masm->isolate()); |
| 135 | __ TailCallStub(&stub); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 139 | // static |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 140 | void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) { |
| 141 | // ----------- S t a t e ------------- |
| 142 | // -- r0 : number of arguments |
| 143 | // -- lr : return address |
| 144 | // -- sp[(argc - n) * 8] : arg[n] (zero-based) |
| 145 | // -- sp[(argc + 1) * 8] : receiver |
| 146 | // ----------------------------------- |
| 147 | Condition const cc_done = (kind == MathMaxMinKind::kMin) ? mi : gt; |
| 148 | Condition const cc_swap = (kind == MathMaxMinKind::kMin) ? gt : mi; |
| 149 | Heap::RootListIndex const root_index = |
| 150 | (kind == MathMaxMinKind::kMin) ? Heap::kInfinityValueRootIndex |
| 151 | : Heap::kMinusInfinityValueRootIndex; |
| 152 | DoubleRegister const reg = (kind == MathMaxMinKind::kMin) ? d2 : d1; |
| 153 | |
| 154 | // Load the accumulator with the default return value (either -Infinity or |
| 155 | // +Infinity), with the tagged value in r1 and the double value in d1. |
| 156 | __ LoadRoot(r1, root_index); |
| 157 | __ vldr(d1, FieldMemOperand(r1, HeapNumber::kValueOffset)); |
| 158 | |
| 159 | // Remember how many slots to drop (including the receiver). |
| 160 | __ add(r4, r0, Operand(1)); |
| 161 | |
| 162 | Label done_loop, loop; |
| 163 | __ bind(&loop); |
| 164 | { |
| 165 | // Check if all parameters done. |
| 166 | __ sub(r0, r0, Operand(1), SetCC); |
| 167 | __ b(lt, &done_loop); |
| 168 | |
| 169 | // Load the next parameter tagged value into r2. |
| 170 | __ ldr(r2, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
| 171 | |
| 172 | // Load the double value of the parameter into d2, maybe converting the |
| 173 | // parameter to a number first using the ToNumberStub if necessary. |
| 174 | Label convert, convert_smi, convert_number, done_convert; |
| 175 | __ bind(&convert); |
| 176 | __ JumpIfSmi(r2, &convert_smi); |
| 177 | __ ldr(r3, FieldMemOperand(r2, HeapObject::kMapOffset)); |
| 178 | __ JumpIfRoot(r3, Heap::kHeapNumberMapRootIndex, &convert_number); |
| 179 | { |
| 180 | // Parameter is not a Number, use the ToNumberStub to convert it. |
| 181 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 182 | __ SmiTag(r0); |
| 183 | __ SmiTag(r4); |
| 184 | __ Push(r0, r1, r4); |
| 185 | __ mov(r0, r2); |
| 186 | ToNumberStub stub(masm->isolate()); |
| 187 | __ CallStub(&stub); |
| 188 | __ mov(r2, r0); |
| 189 | __ Pop(r0, r1, r4); |
| 190 | { |
| 191 | // Restore the double accumulator value (d1). |
| 192 | Label done_restore; |
| 193 | __ SmiToDouble(d1, r1); |
| 194 | __ JumpIfSmi(r1, &done_restore); |
| 195 | __ vldr(d1, FieldMemOperand(r1, HeapNumber::kValueOffset)); |
| 196 | __ bind(&done_restore); |
| 197 | } |
| 198 | __ SmiUntag(r4); |
| 199 | __ SmiUntag(r0); |
| 200 | } |
| 201 | __ b(&convert); |
| 202 | __ bind(&convert_number); |
| 203 | __ vldr(d2, FieldMemOperand(r2, HeapNumber::kValueOffset)); |
| 204 | __ b(&done_convert); |
| 205 | __ bind(&convert_smi); |
| 206 | __ SmiToDouble(d2, r2); |
| 207 | __ bind(&done_convert); |
| 208 | |
| 209 | // Perform the actual comparison with the accumulator value on the left hand |
| 210 | // side (d1) and the next parameter value on the right hand side (d2). |
| 211 | Label compare_nan, compare_swap; |
| 212 | __ VFPCompareAndSetFlags(d1, d2); |
| 213 | __ b(cc_done, &loop); |
| 214 | __ b(cc_swap, &compare_swap); |
| 215 | __ b(vs, &compare_nan); |
| 216 | |
| 217 | // Left and right hand side are equal, check for -0 vs. +0. |
| 218 | __ VmovHigh(ip, reg); |
| 219 | __ cmp(ip, Operand(0x80000000)); |
| 220 | __ b(ne, &loop); |
| 221 | |
| 222 | // Result is on the right hand side. |
| 223 | __ bind(&compare_swap); |
| 224 | __ vmov(d1, d2); |
| 225 | __ mov(r1, r2); |
| 226 | __ b(&loop); |
| 227 | |
| 228 | // At least one side is NaN, which means that the result will be NaN too. |
| 229 | __ bind(&compare_nan); |
| 230 | __ LoadRoot(r1, Heap::kNanValueRootIndex); |
| 231 | __ vldr(d1, FieldMemOperand(r1, HeapNumber::kValueOffset)); |
| 232 | __ b(&loop); |
| 233 | } |
| 234 | |
| 235 | __ bind(&done_loop); |
| 236 | __ mov(r0, r1); |
| 237 | __ Drop(r4); |
| 238 | __ Ret(); |
| 239 | } |
| 240 | |
| 241 | // static |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 242 | void Builtins::Generate_NumberConstructor(MacroAssembler* masm) { |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 243 | // ----------- S t a t e ------------- |
| 244 | // -- r0 : number of arguments |
| 245 | // -- r1 : constructor function |
| 246 | // -- lr : return address |
| 247 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) |
| 248 | // -- sp[argc * 4] : receiver |
| 249 | // ----------------------------------- |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 250 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 251 | // 1. Load the first argument into r0 and get rid of the rest (including the |
| 252 | // receiver). |
| 253 | Label no_arguments; |
| 254 | { |
| 255 | __ sub(r0, r0, Operand(1), SetCC); |
| 256 | __ b(lo, &no_arguments); |
| 257 | __ ldr(r0, MemOperand(sp, r0, LSL, kPointerSizeLog2, PreIndex)); |
| 258 | __ Drop(2); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 259 | } |
| 260 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 261 | // 2a. Convert the first argument to a number. |
| 262 | ToNumberStub stub(masm->isolate()); |
| 263 | __ TailCallStub(&stub); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 264 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 265 | // 2b. No arguments, return +0. |
| 266 | __ bind(&no_arguments); |
| 267 | __ Move(r0, Smi::FromInt(0)); |
| 268 | __ Ret(1); |
| 269 | } |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 270 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 271 | |
| 272 | // static |
| 273 | void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) { |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 274 | // ----------- S t a t e ------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 275 | // -- r0 : number of arguments |
| 276 | // -- r1 : constructor function |
| 277 | // -- r3 : new target |
| 278 | // -- lr : return address |
| 279 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) |
| 280 | // -- sp[argc * 4] : receiver |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 281 | // ----------------------------------- |
| 282 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 283 | // 1. Make sure we operate in the context of the called function. |
| 284 | __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 285 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 286 | // 2. Load the first argument into r2 and get rid of the rest (including the |
| 287 | // receiver). |
| 288 | { |
| 289 | Label no_arguments, done; |
| 290 | __ sub(r0, r0, Operand(1), SetCC); |
| 291 | __ b(lo, &no_arguments); |
| 292 | __ ldr(r2, MemOperand(sp, r0, LSL, kPointerSizeLog2, PreIndex)); |
| 293 | __ Drop(2); |
| 294 | __ b(&done); |
| 295 | __ bind(&no_arguments); |
| 296 | __ Move(r2, Smi::FromInt(0)); |
| 297 | __ Drop(1); |
| 298 | __ bind(&done); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 299 | } |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 300 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 301 | // 3. Make sure r2 is a number. |
| 302 | { |
| 303 | Label done_convert; |
| 304 | __ JumpIfSmi(r2, &done_convert); |
| 305 | __ CompareObjectType(r2, r4, r4, HEAP_NUMBER_TYPE); |
| 306 | __ b(eq, &done_convert); |
| 307 | { |
| 308 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 309 | __ Push(r1, r3); |
| 310 | __ Move(r0, r2); |
| 311 | ToNumberStub stub(masm->isolate()); |
| 312 | __ CallStub(&stub); |
| 313 | __ Move(r2, r0); |
| 314 | __ Pop(r1, r3); |
| 315 | } |
| 316 | __ bind(&done_convert); |
| 317 | } |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 318 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 319 | // 4. Check if new target and constructor differ. |
| 320 | Label new_object; |
| 321 | __ cmp(r1, r3); |
| 322 | __ b(ne, &new_object); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 323 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 324 | // 5. Allocate a JSValue wrapper for the number. |
| 325 | __ AllocateJSValue(r0, r1, r2, r4, r5, &new_object); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 326 | __ Ret(); |
| 327 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 328 | // 6. Fallback to the runtime to create new object. |
| 329 | __ bind(&new_object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 330 | { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 331 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 332 | __ Push(r2); // first argument |
| 333 | FastNewObjectStub stub(masm->isolate()); |
| 334 | __ CallStub(&stub); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 335 | __ Pop(r2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 336 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 337 | __ str(r2, FieldMemOperand(r0, JSValue::kValueOffset)); |
| 338 | __ Ret(); |
| 339 | } |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 340 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 341 | |
| 342 | // static |
| 343 | void Builtins::Generate_StringConstructor(MacroAssembler* masm) { |
| 344 | // ----------- S t a t e ------------- |
| 345 | // -- r0 : number of arguments |
| 346 | // -- r1 : constructor function |
| 347 | // -- lr : return address |
| 348 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) |
| 349 | // -- sp[argc * 4] : receiver |
| 350 | // ----------------------------------- |
| 351 | |
| 352 | // 1. Load the first argument into r0 and get rid of the rest (including the |
| 353 | // receiver). |
| 354 | Label no_arguments; |
| 355 | { |
| 356 | __ sub(r0, r0, Operand(1), SetCC); |
| 357 | __ b(lo, &no_arguments); |
| 358 | __ ldr(r0, MemOperand(sp, r0, LSL, kPointerSizeLog2, PreIndex)); |
| 359 | __ Drop(2); |
| 360 | } |
| 361 | |
| 362 | // 2a. At least one argument, return r0 if it's a string, otherwise |
| 363 | // dispatch to appropriate conversion. |
| 364 | Label to_string, symbol_descriptive_string; |
| 365 | { |
| 366 | __ JumpIfSmi(r0, &to_string); |
| 367 | STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE); |
| 368 | __ CompareObjectType(r0, r1, r1, FIRST_NONSTRING_TYPE); |
| 369 | __ b(hi, &to_string); |
| 370 | __ b(eq, &symbol_descriptive_string); |
| 371 | __ Ret(); |
| 372 | } |
| 373 | |
| 374 | // 2b. No arguments, return the empty string (and pop the receiver). |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 375 | __ bind(&no_arguments); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 376 | { |
| 377 | __ LoadRoot(r0, Heap::kempty_stringRootIndex); |
| 378 | __ Ret(1); |
| 379 | } |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 380 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 381 | // 3a. Convert r0 to a string. |
| 382 | __ bind(&to_string); |
| 383 | { |
| 384 | ToStringStub stub(masm->isolate()); |
| 385 | __ TailCallStub(&stub); |
| 386 | } |
| 387 | |
| 388 | // 3b. Convert symbol in r0 to a string. |
| 389 | __ bind(&symbol_descriptive_string); |
| 390 | { |
| 391 | __ Push(r0); |
| 392 | __ TailCallRuntime(Runtime::kSymbolDescriptiveString); |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | |
| 397 | // static |
| 398 | void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) { |
| 399 | // ----------- S t a t e ------------- |
| 400 | // -- r0 : number of arguments |
| 401 | // -- r1 : constructor function |
| 402 | // -- r3 : new target |
| 403 | // -- lr : return address |
| 404 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) |
| 405 | // -- sp[argc * 4] : receiver |
| 406 | // ----------------------------------- |
| 407 | |
| 408 | // 1. Make sure we operate in the context of the called function. |
| 409 | __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); |
| 410 | |
| 411 | // 2. Load the first argument into r2 and get rid of the rest (including the |
| 412 | // receiver). |
| 413 | { |
| 414 | Label no_arguments, done; |
| 415 | __ sub(r0, r0, Operand(1), SetCC); |
| 416 | __ b(lo, &no_arguments); |
| 417 | __ ldr(r2, MemOperand(sp, r0, LSL, kPointerSizeLog2, PreIndex)); |
| 418 | __ Drop(2); |
| 419 | __ b(&done); |
| 420 | __ bind(&no_arguments); |
| 421 | __ LoadRoot(r2, Heap::kempty_stringRootIndex); |
| 422 | __ Drop(1); |
| 423 | __ bind(&done); |
| 424 | } |
| 425 | |
| 426 | // 3. Make sure r2 is a string. |
| 427 | { |
| 428 | Label convert, done_convert; |
| 429 | __ JumpIfSmi(r2, &convert); |
| 430 | __ CompareObjectType(r2, r4, r4, FIRST_NONSTRING_TYPE); |
| 431 | __ b(lo, &done_convert); |
| 432 | __ bind(&convert); |
| 433 | { |
| 434 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 435 | ToStringStub stub(masm->isolate()); |
| 436 | __ Push(r1, r3); |
| 437 | __ Move(r0, r2); |
| 438 | __ CallStub(&stub); |
| 439 | __ Move(r2, r0); |
| 440 | __ Pop(r1, r3); |
| 441 | } |
| 442 | __ bind(&done_convert); |
| 443 | } |
| 444 | |
| 445 | // 4. Check if new target and constructor differ. |
| 446 | Label new_object; |
| 447 | __ cmp(r1, r3); |
| 448 | __ b(ne, &new_object); |
| 449 | |
| 450 | // 5. Allocate a JSValue wrapper for the string. |
| 451 | __ AllocateJSValue(r0, r1, r2, r4, r5, &new_object); |
| 452 | __ Ret(); |
| 453 | |
| 454 | // 6. Fallback to the runtime to create new object. |
| 455 | __ bind(&new_object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 456 | { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 457 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 458 | __ Push(r2); // first argument |
| 459 | FastNewObjectStub stub(masm->isolate()); |
| 460 | __ CallStub(&stub); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 461 | __ Pop(r2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 462 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 463 | __ str(r2, FieldMemOperand(r0, JSValue::kValueOffset)); |
Shimeng (Simon) Wang | 8a31eba | 2010-12-06 19:01:33 -0800 | [diff] [blame] | 464 | __ Ret(); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 465 | } |
| 466 | |
| 467 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 468 | static void GenerateTailCallToSharedCode(MacroAssembler* masm) { |
| 469 | __ ldr(r2, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
| 470 | __ ldr(r2, FieldMemOperand(r2, SharedFunctionInfo::kCodeOffset)); |
| 471 | __ add(r2, r2, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 472 | __ Jump(r2); |
| 473 | } |
| 474 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 475 | static void GenerateTailCallToReturnedCode(MacroAssembler* masm, |
| 476 | Runtime::FunctionId function_id) { |
| 477 | // ----------- S t a t e ------------- |
| 478 | // -- r0 : argument count (preserved for callee) |
| 479 | // -- r1 : target function (preserved for callee) |
| 480 | // -- r3 : new target (preserved for callee) |
| 481 | // ----------------------------------- |
| 482 | { |
| 483 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 484 | // Push the number of arguments to the callee. |
| 485 | __ SmiTag(r0); |
| 486 | __ push(r0); |
| 487 | // Push a copy of the target function and the new target. |
| 488 | __ push(r1); |
| 489 | __ push(r3); |
| 490 | // Push function as parameter to the runtime call. |
| 491 | __ Push(r1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 492 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 493 | __ CallRuntime(function_id, 1); |
| 494 | __ mov(r2, r0); |
| 495 | |
| 496 | // Restore target function and new target. |
| 497 | __ pop(r3); |
| 498 | __ pop(r1); |
| 499 | __ pop(r0); |
| 500 | __ SmiUntag(r0, r0); |
| 501 | } |
| 502 | __ add(r2, r2, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 503 | __ Jump(r2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | |
| 507 | void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) { |
| 508 | // Checking whether the queued function is ready for install is optional, |
| 509 | // since we come across interrupts and stack checks elsewhere. However, |
| 510 | // not checking may delay installing ready functions, and always checking |
| 511 | // would be quite expensive. A good compromise is to first check against |
| 512 | // stack limit as a cue for an interrupt signal. |
| 513 | Label ok; |
| 514 | __ LoadRoot(ip, Heap::kStackLimitRootIndex); |
| 515 | __ cmp(sp, Operand(ip)); |
| 516 | __ b(hs, &ok); |
| 517 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 518 | GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 519 | |
| 520 | __ bind(&ok); |
| 521 | GenerateTailCallToSharedCode(masm); |
| 522 | } |
| 523 | |
| 524 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 525 | static void Generate_JSConstructStubHelper(MacroAssembler* masm, |
| 526 | bool is_api_function, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 527 | bool create_implicit_receiver, |
| 528 | bool check_derived_construct) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 529 | // ----------- S t a t e ------------- |
| 530 | // -- r0 : number of arguments |
| 531 | // -- r1 : constructor function |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 532 | // -- r2 : allocation site or undefined |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 533 | // -- r3 : new target |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 534 | // -- lr : return address |
| 535 | // -- sp[...]: constructor arguments |
| 536 | // ----------------------------------- |
| 537 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 538 | Isolate* isolate = masm->isolate(); |
| 539 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 540 | // Enter a construct frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 541 | { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 542 | FrameAndConstantPoolScope scope(masm, StackFrame::CONSTRUCT); |
| 543 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 544 | // Preserve the incoming parameters on the stack. |
| 545 | __ AssertUndefinedOrAllocationSite(r2, r4); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 546 | __ SmiTag(r0); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 547 | __ Push(r2, r0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 548 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 549 | if (create_implicit_receiver) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 550 | // Allocate the new receiver object. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 551 | __ Push(r1, r3); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 552 | FastNewObjectStub stub(masm->isolate()); |
| 553 | __ CallStub(&stub); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 554 | __ mov(r4, r0); |
| 555 | __ Pop(r1, r3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 556 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 557 | // ----------- S t a t e ------------- |
| 558 | // -- r1: constructor function |
| 559 | // -- r3: new target |
| 560 | // -- r4: newly allocated object |
| 561 | // ----------------------------------- |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 562 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 563 | // Retrieve smi-tagged arguments count from the stack. |
| 564 | __ ldr(r0, MemOperand(sp)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 565 | } |
| 566 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 567 | __ SmiUntag(r0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 568 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 569 | if (create_implicit_receiver) { |
| 570 | // Push the allocated receiver to the stack. We need two copies |
| 571 | // because we may have to return the original one and the calling |
| 572 | // conventions dictate that the called function pops the receiver. |
| 573 | __ push(r4); |
| 574 | __ push(r4); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 575 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 576 | __ PushRoot(Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 577 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 578 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 579 | // Set up pointer to last argument. |
| 580 | __ add(r2, fp, Operand(StandardFrameConstants::kCallerSPOffset)); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 581 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 582 | // Copy arguments and receiver to the expression stack. |
| 583 | // r0: number of arguments |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 584 | // r1: constructor function |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 585 | // r2: address of last argument (caller sp) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 586 | // r3: new target |
| 587 | // r4: number of arguments (smi-tagged) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 588 | // sp[0]: receiver |
| 589 | // sp[1]: receiver |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 590 | // sp[2]: number of arguments (smi-tagged) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 591 | Label loop, entry; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 592 | __ SmiTag(r4, r0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 593 | __ b(&entry); |
| 594 | __ bind(&loop); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 595 | __ ldr(ip, MemOperand(r2, r4, LSL, kPointerSizeLog2 - 1)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 596 | __ push(ip); |
| 597 | __ bind(&entry); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 598 | __ sub(r4, r4, Operand(2), SetCC); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 599 | __ b(ge, &loop); |
| 600 | |
| 601 | // Call the function. |
| 602 | // r0: number of arguments |
| 603 | // r1: constructor function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 604 | // r3: new target |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 605 | if (is_api_function) { |
| 606 | __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); |
| 607 | Handle<Code> code = |
| 608 | masm->isolate()->builtins()->HandleApiCallConstruct(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 609 | __ Call(code, RelocInfo::CODE_TARGET); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 610 | } else { |
| 611 | ParameterCount actual(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 612 | __ InvokeFunction(r1, r3, actual, CALL_FUNCTION, |
| 613 | CheckDebugStepCallWrapper()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 614 | } |
| 615 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 616 | // Store offset of return address for deoptimizer. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 617 | if (create_implicit_receiver && !is_api_function) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 618 | masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset()); |
| 619 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 620 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 621 | // Restore context from the frame. |
| 622 | // r0: result |
| 623 | // sp[0]: receiver |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 624 | // sp[1]: number of arguments (smi-tagged) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 625 | __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 626 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 627 | if (create_implicit_receiver) { |
| 628 | // If the result is an object (in the ECMA sense), we should get rid |
| 629 | // of the receiver and use the result; see ECMA-262 section 13.2.2-7 |
| 630 | // on page 74. |
| 631 | Label use_receiver, exit; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 632 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 633 | // If the result is a smi, it is *not* an object in the ECMA sense. |
| 634 | // r0: result |
| 635 | // sp[0]: receiver |
| 636 | // sp[1]: number of arguments (smi-tagged) |
| 637 | __ JumpIfSmi(r0, &use_receiver); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 638 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 639 | // If the type of the result (stored in its map) is less than |
| 640 | // FIRST_JS_RECEIVER_TYPE, it is not an object in the ECMA sense. |
| 641 | __ CompareObjectType(r0, r1, r3, FIRST_JS_RECEIVER_TYPE); |
| 642 | __ b(ge, &exit); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 643 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 644 | // Throw away the result of the constructor invocation and use the |
| 645 | // on-stack receiver as the result. |
| 646 | __ bind(&use_receiver); |
| 647 | __ ldr(r0, MemOperand(sp)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 648 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 649 | // Remove receiver from the stack, remove caller arguments, and |
| 650 | // return. |
| 651 | __ bind(&exit); |
| 652 | // r0: result |
| 653 | // sp[0]: receiver (newly allocated object) |
| 654 | // sp[1]: number of arguments (smi-tagged) |
| 655 | __ ldr(r1, MemOperand(sp, 1 * kPointerSize)); |
| 656 | } else { |
| 657 | __ ldr(r1, MemOperand(sp)); |
| 658 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 659 | |
| 660 | // Leave construct frame. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 661 | } |
| 662 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 663 | // ES6 9.2.2. Step 13+ |
| 664 | // Check that the result is not a Smi, indicating that the constructor result |
| 665 | // from a derived class is neither undefined nor an Object. |
| 666 | if (check_derived_construct) { |
| 667 | Label dont_throw; |
| 668 | __ JumpIfNotSmi(r0, &dont_throw); |
| 669 | { |
| 670 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 671 | __ CallRuntime(Runtime::kThrowDerivedConstructorReturnedNonObject); |
| 672 | } |
| 673 | __ bind(&dont_throw); |
| 674 | } |
| 675 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 676 | __ add(sp, sp, Operand(r1, LSL, kPointerSizeLog2 - 1)); |
| 677 | __ add(sp, sp, Operand(kPointerSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 678 | if (create_implicit_receiver) { |
| 679 | __ IncrementCounter(isolate->counters()->constructed_objects(), 1, r1, r2); |
| 680 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 681 | __ Jump(lr); |
| 682 | } |
| 683 | |
| 684 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 685 | void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 686 | Generate_JSConstructStubHelper(masm, false, true, false); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 687 | } |
| 688 | |
| 689 | |
| 690 | void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 691 | Generate_JSConstructStubHelper(masm, true, false, false); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 692 | } |
| 693 | |
| 694 | |
| 695 | void Builtins::Generate_JSBuiltinsConstructStub(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 696 | Generate_JSConstructStubHelper(masm, false, false, false); |
| 697 | } |
| 698 | |
| 699 | |
| 700 | void Builtins::Generate_JSBuiltinsConstructStubForDerived( |
| 701 | MacroAssembler* masm) { |
| 702 | Generate_JSConstructStubHelper(masm, false, false, true); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 703 | } |
| 704 | |
| 705 | |
| 706 | void Builtins::Generate_ConstructedNonConstructable(MacroAssembler* masm) { |
| 707 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 708 | __ push(r1); |
| 709 | __ CallRuntime(Runtime::kThrowConstructedNonConstructable); |
| 710 | } |
| 711 | |
| 712 | |
| 713 | enum IsTagged { kArgcIsSmiTagged, kArgcIsUntaggedInt }; |
| 714 | |
| 715 | |
| 716 | // Clobbers r2; preserves all other registers. |
| 717 | static void Generate_CheckStackOverflow(MacroAssembler* masm, Register argc, |
| 718 | IsTagged argc_is_tagged) { |
| 719 | // Check the stack for overflow. We are not trying to catch |
| 720 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 721 | // limit" is checked. |
| 722 | Label okay; |
| 723 | __ LoadRoot(r2, Heap::kRealStackLimitRootIndex); |
| 724 | // Make r2 the space we have left. The stack might already be overflowed |
| 725 | // here which will cause r2 to become negative. |
| 726 | __ sub(r2, sp, r2); |
| 727 | // Check if the arguments will overflow the stack. |
| 728 | if (argc_is_tagged == kArgcIsSmiTagged) { |
| 729 | __ cmp(r2, Operand::PointerOffsetFromSmiKey(argc)); |
| 730 | } else { |
| 731 | DCHECK(argc_is_tagged == kArgcIsUntaggedInt); |
| 732 | __ cmp(r2, Operand(argc, LSL, kPointerSizeLog2)); |
| 733 | } |
| 734 | __ b(gt, &okay); // Signed comparison. |
| 735 | |
| 736 | // Out of stack space. |
| 737 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 738 | |
| 739 | __ bind(&okay); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 740 | } |
| 741 | |
| 742 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 743 | static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, |
| 744 | bool is_construct) { |
| 745 | // Called from Generate_JS_Entry |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 746 | // r0: new.target |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 747 | // r1: function |
| 748 | // r2: receiver |
| 749 | // r3: argc |
| 750 | // r4: argv |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 751 | // r5-r6, r8 (if !FLAG_enable_embedded_constant_pool) and cp may be clobbered |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 752 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 753 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 754 | // Clear the context before we push it when entering the internal frame. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 755 | __ mov(cp, Operand::Zero()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 756 | |
| 757 | // Enter an internal frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 758 | { |
| 759 | FrameScope scope(masm, StackFrame::INTERNAL); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 760 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 761 | // Setup the context (we need to use the caller context from the isolate). |
| 762 | ExternalReference context_address(Isolate::kContextAddress, |
| 763 | masm->isolate()); |
| 764 | __ mov(cp, Operand(context_address)); |
| 765 | __ ldr(cp, MemOperand(cp)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 766 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 767 | __ InitializeRootRegister(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 768 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 769 | // Push the function and the receiver onto the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 770 | __ Push(r1, r2); |
| 771 | |
| 772 | // Check if we have enough stack space to push all arguments. |
| 773 | // Clobbers r2. |
| 774 | Generate_CheckStackOverflow(masm, r3, kArgcIsUntaggedInt); |
| 775 | |
| 776 | // Remember new.target. |
| 777 | __ mov(r5, r0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 778 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 779 | // Copy arguments to the stack in a loop. |
| 780 | // r1: function |
| 781 | // r3: argc |
| 782 | // r4: argv, i.e. points to first arg |
| 783 | Label loop, entry; |
| 784 | __ add(r2, r4, Operand(r3, LSL, kPointerSizeLog2)); |
| 785 | // r2 points past last arg. |
| 786 | __ b(&entry); |
| 787 | __ bind(&loop); |
| 788 | __ ldr(r0, MemOperand(r4, kPointerSize, PostIndex)); // read next parameter |
| 789 | __ ldr(r0, MemOperand(r0)); // dereference handle |
| 790 | __ push(r0); // push parameter |
| 791 | __ bind(&entry); |
| 792 | __ cmp(r4, r2); |
| 793 | __ b(ne, &loop); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 794 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 795 | // Setup new.target and argc. |
| 796 | __ mov(r0, Operand(r3)); |
| 797 | __ mov(r3, Operand(r5)); |
| 798 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 799 | // Initialize all JavaScript callee-saved registers, since they will be seen |
| 800 | // by the garbage collector as part of handlers. |
| 801 | __ LoadRoot(r4, Heap::kUndefinedValueRootIndex); |
| 802 | __ mov(r5, Operand(r4)); |
| 803 | __ mov(r6, Operand(r4)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 804 | if (!FLAG_enable_embedded_constant_pool) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 805 | __ mov(r8, Operand(r4)); |
| 806 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 807 | if (kR9Available == 1) { |
| 808 | __ mov(r9, Operand(r4)); |
| 809 | } |
| 810 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 811 | // Invoke the code. |
| 812 | Handle<Code> builtin = is_construct |
| 813 | ? masm->isolate()->builtins()->Construct() |
| 814 | : masm->isolate()->builtins()->Call(); |
| 815 | __ Call(builtin, RelocInfo::CODE_TARGET); |
| 816 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 817 | // Exit the JS frame and remove the parameters (except function), and |
| 818 | // return. |
| 819 | // Respect ABI stack constraint. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 820 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 821 | __ Jump(lr); |
| 822 | |
| 823 | // r0: result |
| 824 | } |
| 825 | |
| 826 | |
| 827 | void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { |
| 828 | Generate_JSEntryTrampolineHelper(masm, false); |
| 829 | } |
| 830 | |
| 831 | |
| 832 | void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { |
| 833 | Generate_JSEntryTrampolineHelper(masm, true); |
| 834 | } |
| 835 | |
| 836 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 837 | // Generate code for entering a JS function with the interpreter. |
| 838 | // On entry to the function the receiver and arguments have been pushed on the |
| 839 | // stack left to right. The actual argument count matches the formal parameter |
| 840 | // count expected by the function. |
| 841 | // |
| 842 | // The live registers are: |
| 843 | // o r1: the JS function object being called. |
| 844 | // o r3: the new target |
| 845 | // o cp: our context |
| 846 | // o pp: the caller's constant pool pointer (if enabled) |
| 847 | // o fp: the caller's frame pointer |
| 848 | // o sp: stack pointer |
| 849 | // o lr: return address |
| 850 | // |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 851 | // The function builds an interpreter frame. See InterpreterFrameConstants in |
| 852 | // frames.h for its layout. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 853 | void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { |
| 854 | // Open a frame scope to indicate that there is a frame on the stack. The |
| 855 | // MANUAL indicates that the scope shouldn't actually generate code to set up |
| 856 | // the frame (that is done below). |
| 857 | FrameScope frame_scope(masm, StackFrame::MANUAL); |
| 858 | __ PushFixedFrame(r1); |
| 859 | __ add(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 860 | |
| 861 | // Get the bytecode array from the function object and load the pointer to the |
| 862 | // first entry into kInterpreterBytecodeRegister. |
| 863 | __ ldr(r0, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 864 | Register debug_info = kInterpreterBytecodeArrayRegister; |
| 865 | DCHECK(!debug_info.is(r0)); |
| 866 | __ ldr(debug_info, FieldMemOperand(r0, SharedFunctionInfo::kDebugInfoOffset)); |
| 867 | __ cmp(debug_info, Operand(DebugInfo::uninitialized())); |
| 868 | // Load original bytecode array or the debug copy. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 869 | __ ldr(kInterpreterBytecodeArrayRegister, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 870 | FieldMemOperand(r0, SharedFunctionInfo::kFunctionDataOffset), eq); |
| 871 | __ ldr(kInterpreterBytecodeArrayRegister, |
| 872 | FieldMemOperand(debug_info, DebugInfo::kAbstractCodeIndex), ne); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 873 | |
| 874 | if (FLAG_debug_code) { |
| 875 | // Check function data field is actually a BytecodeArray object. |
| 876 | __ SmiTst(kInterpreterBytecodeArrayRegister); |
| 877 | __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry); |
| 878 | __ CompareObjectType(kInterpreterBytecodeArrayRegister, r0, no_reg, |
| 879 | BYTECODE_ARRAY_TYPE); |
| 880 | __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry); |
| 881 | } |
| 882 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 883 | // Push new.target, bytecode array and zero for bytecode array offset. |
| 884 | __ mov(r0, Operand(0)); |
| 885 | __ Push(r3, kInterpreterBytecodeArrayRegister, r0); |
| 886 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 887 | // Allocate the local and temporary register file on the stack. |
| 888 | { |
| 889 | // Load frame size from the BytecodeArray object. |
| 890 | __ ldr(r4, FieldMemOperand(kInterpreterBytecodeArrayRegister, |
| 891 | BytecodeArray::kFrameSizeOffset)); |
| 892 | |
| 893 | // Do a stack check to ensure we don't go over the limit. |
| 894 | Label ok; |
| 895 | __ sub(r9, sp, Operand(r4)); |
| 896 | __ LoadRoot(r2, Heap::kRealStackLimitRootIndex); |
| 897 | __ cmp(r9, Operand(r2)); |
| 898 | __ b(hs, &ok); |
| 899 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 900 | __ bind(&ok); |
| 901 | |
| 902 | // If ok, push undefined as the initial value for all register file entries. |
| 903 | Label loop_header; |
| 904 | Label loop_check; |
| 905 | __ LoadRoot(r9, Heap::kUndefinedValueRootIndex); |
| 906 | __ b(&loop_check, al); |
| 907 | __ bind(&loop_header); |
| 908 | // TODO(rmcilroy): Consider doing more than one push per loop iteration. |
| 909 | __ push(r9); |
| 910 | // Continue loop if not done. |
| 911 | __ bind(&loop_check); |
| 912 | __ sub(r4, r4, Operand(kPointerSize), SetCC); |
| 913 | __ b(&loop_header, ge); |
| 914 | } |
| 915 | |
| 916 | // TODO(rmcilroy): List of things not currently dealt with here but done in |
| 917 | // fullcodegen's prologue: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 918 | // - Call ProfileEntryHookStub when isolate has a function_entry_hook. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 919 | // - Code aging of the BytecodeArray object. |
| 920 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 921 | // Load accumulator, register file, bytecode offset, dispatch table into |
| 922 | // registers. |
| 923 | __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); |
| 924 | __ add(kInterpreterRegisterFileRegister, fp, |
| 925 | Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); |
| 926 | __ mov(kInterpreterBytecodeOffsetRegister, |
| 927 | Operand(BytecodeArray::kHeaderSize - kHeapObjectTag)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 928 | __ mov(kInterpreterDispatchTableRegister, |
| 929 | Operand(ExternalReference::interpreter_dispatch_table_address( |
| 930 | masm->isolate()))); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 931 | |
| 932 | // Dispatch to the first bytecode handler for the function. |
| 933 | __ ldrb(r1, MemOperand(kInterpreterBytecodeArrayRegister, |
| 934 | kInterpreterBytecodeOffsetRegister)); |
| 935 | __ ldr(ip, MemOperand(kInterpreterDispatchTableRegister, r1, LSL, |
| 936 | kPointerSizeLog2)); |
| 937 | // TODO(rmcilroy): Make dispatch table point to code entrys to avoid untagging |
| 938 | // and header removal. |
| 939 | __ add(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 940 | __ Call(ip); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 941 | |
| 942 | // Even though the first bytecode handler was called, we will never return. |
| 943 | __ Abort(kUnexpectedReturnFromBytecodeHandler); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 944 | } |
| 945 | |
| 946 | |
| 947 | void Builtins::Generate_InterpreterExitTrampoline(MacroAssembler* masm) { |
| 948 | // TODO(rmcilroy): List of things not currently dealt with here but done in |
| 949 | // fullcodegen's EmitReturnSequence. |
| 950 | // - Supporting FLAG_trace for Runtime::TraceExit. |
| 951 | // - Support profiler (specifically decrementing profiling_counter |
| 952 | // appropriately and calling out to HandleInterrupts if necessary). |
| 953 | |
| 954 | // The return value is in accumulator, which is already in r0. |
| 955 | |
| 956 | // Leave the frame (also dropping the register file). |
| 957 | __ LeaveFrame(StackFrame::JAVA_SCRIPT); |
| 958 | |
| 959 | // Drop receiver + arguments and return. |
| 960 | __ ldr(ip, FieldMemOperand(kInterpreterBytecodeArrayRegister, |
| 961 | BytecodeArray::kParameterSizeOffset)); |
| 962 | __ add(sp, sp, ip, LeaveCC); |
| 963 | __ Jump(lr); |
| 964 | } |
| 965 | |
| 966 | |
| 967 | static void Generate_InterpreterPushArgs(MacroAssembler* masm, Register index, |
| 968 | Register limit, Register scratch) { |
| 969 | Label loop_header, loop_check; |
| 970 | __ b(al, &loop_check); |
| 971 | __ bind(&loop_header); |
| 972 | __ ldr(scratch, MemOperand(index, -kPointerSize, PostIndex)); |
| 973 | __ push(scratch); |
| 974 | __ bind(&loop_check); |
| 975 | __ cmp(index, limit); |
| 976 | __ b(gt, &loop_header); |
| 977 | } |
| 978 | |
| 979 | |
| 980 | // static |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 981 | void Builtins::Generate_InterpreterPushArgsAndCallImpl( |
| 982 | MacroAssembler* masm, TailCallMode tail_call_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 983 | // ----------- S t a t e ------------- |
| 984 | // -- r0 : the number of arguments (not including the receiver) |
| 985 | // -- r2 : the address of the first argument to be pushed. Subsequent |
| 986 | // arguments should be consecutive above this, in the same order as |
| 987 | // they are to be pushed onto the stack. |
| 988 | // -- r1 : the target to call (can be any Object). |
| 989 | // ----------------------------------- |
| 990 | |
| 991 | // Find the address of the last argument. |
| 992 | __ add(r3, r0, Operand(1)); // Add one for receiver. |
| 993 | __ mov(r3, Operand(r3, LSL, kPointerSizeLog2)); |
| 994 | __ sub(r3, r2, r3); |
| 995 | |
| 996 | // Push the arguments. |
| 997 | Generate_InterpreterPushArgs(masm, r2, r3, r4); |
| 998 | |
| 999 | // Call the target. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1000 | __ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny, |
| 1001 | tail_call_mode), |
| 1002 | RelocInfo::CODE_TARGET); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1003 | } |
| 1004 | |
| 1005 | |
| 1006 | // static |
| 1007 | void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) { |
| 1008 | // ----------- S t a t e ------------- |
| 1009 | // -- r0 : argument count (not including receiver) |
| 1010 | // -- r3 : new target |
| 1011 | // -- r1 : constructor to call |
| 1012 | // -- r2 : address of the first argument |
| 1013 | // ----------------------------------- |
| 1014 | |
| 1015 | // Find the address of the last argument. |
| 1016 | __ mov(r4, Operand(r0, LSL, kPointerSizeLog2)); |
| 1017 | __ sub(r4, r2, r4); |
| 1018 | |
| 1019 | // Push a slot for the receiver to be constructed. |
| 1020 | __ mov(ip, Operand::Zero()); |
| 1021 | __ push(ip); |
| 1022 | |
| 1023 | // Push the arguments. |
| 1024 | Generate_InterpreterPushArgs(masm, r2, r4, r5); |
| 1025 | |
| 1026 | // Call the constructor with r0, r1, and r3 unmodified. |
| 1027 | __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
| 1028 | } |
| 1029 | |
| 1030 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1031 | static void Generate_EnterBytecodeDispatch(MacroAssembler* masm) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1032 | // Initialize register file register and dispatch table register. |
| 1033 | __ add(kInterpreterRegisterFileRegister, fp, |
| 1034 | Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1035 | __ mov(kInterpreterDispatchTableRegister, |
| 1036 | Operand(ExternalReference::interpreter_dispatch_table_address( |
| 1037 | masm->isolate()))); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1038 | |
| 1039 | // Get the context from the frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1040 | __ ldr(kContextRegister, |
| 1041 | MemOperand(kInterpreterRegisterFileRegister, |
| 1042 | InterpreterFrameConstants::kContextFromRegisterPointer)); |
| 1043 | |
| 1044 | // Get the bytecode array pointer from the frame. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1045 | __ ldr( |
| 1046 | kInterpreterBytecodeArrayRegister, |
| 1047 | MemOperand(kInterpreterRegisterFileRegister, |
| 1048 | InterpreterFrameConstants::kBytecodeArrayFromRegisterPointer)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1049 | |
| 1050 | if (FLAG_debug_code) { |
| 1051 | // Check function data field is actually a BytecodeArray object. |
| 1052 | __ SmiTst(kInterpreterBytecodeArrayRegister); |
| 1053 | __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry); |
| 1054 | __ CompareObjectType(kInterpreterBytecodeArrayRegister, r1, no_reg, |
| 1055 | BYTECODE_ARRAY_TYPE); |
| 1056 | __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry); |
| 1057 | } |
| 1058 | |
| 1059 | // Get the target bytecode offset from the frame. |
| 1060 | __ ldr(kInterpreterBytecodeOffsetRegister, |
| 1061 | MemOperand( |
| 1062 | kInterpreterRegisterFileRegister, |
| 1063 | InterpreterFrameConstants::kBytecodeOffsetFromRegisterPointer)); |
| 1064 | __ SmiUntag(kInterpreterBytecodeOffsetRegister); |
| 1065 | |
| 1066 | // Dispatch to the target bytecode. |
| 1067 | __ ldrb(r1, MemOperand(kInterpreterBytecodeArrayRegister, |
| 1068 | kInterpreterBytecodeOffsetRegister)); |
| 1069 | __ ldr(ip, MemOperand(kInterpreterDispatchTableRegister, r1, LSL, |
| 1070 | kPointerSizeLog2)); |
| 1071 | __ add(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 1072 | __ mov(pc, ip); |
| 1073 | } |
| 1074 | |
| 1075 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1076 | static void Generate_InterpreterNotifyDeoptimizedHelper( |
| 1077 | MacroAssembler* masm, Deoptimizer::BailoutType type) { |
| 1078 | // Enter an internal frame. |
| 1079 | { |
| 1080 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1081 | |
| 1082 | // Pass the deoptimization type to the runtime system. |
| 1083 | __ mov(r1, Operand(Smi::FromInt(static_cast<int>(type)))); |
| 1084 | __ push(r1); |
| 1085 | __ CallRuntime(Runtime::kNotifyDeoptimized); |
| 1086 | // Tear down internal frame. |
| 1087 | } |
| 1088 | |
| 1089 | // Drop state (we don't use these for interpreter deopts) and and pop the |
| 1090 | // accumulator value into the accumulator register. |
| 1091 | __ Drop(1); |
| 1092 | __ Pop(kInterpreterAccumulatorRegister); |
| 1093 | |
| 1094 | // Enter the bytecode dispatch. |
| 1095 | Generate_EnterBytecodeDispatch(masm); |
| 1096 | } |
| 1097 | |
| 1098 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1099 | void Builtins::Generate_InterpreterNotifyDeoptimized(MacroAssembler* masm) { |
| 1100 | Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
| 1101 | } |
| 1102 | |
| 1103 | |
| 1104 | void Builtins::Generate_InterpreterNotifySoftDeoptimized(MacroAssembler* masm) { |
| 1105 | Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::SOFT); |
| 1106 | } |
| 1107 | |
| 1108 | |
| 1109 | void Builtins::Generate_InterpreterNotifyLazyDeoptimized(MacroAssembler* masm) { |
| 1110 | Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); |
| 1111 | } |
| 1112 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1113 | void Builtins::Generate_InterpreterEnterBytecodeDispatch(MacroAssembler* masm) { |
| 1114 | // Set the address of the interpreter entry trampoline as a return address. |
| 1115 | // This simulates the initial call to bytecode handlers in interpreter entry |
| 1116 | // trampoline. The return will never actually be taken, but our stack walker |
| 1117 | // uses this address to determine whether a frame is interpreted. |
| 1118 | __ Move(lr, masm->isolate()->builtins()->InterpreterEntryTrampoline()); |
| 1119 | |
| 1120 | Generate_EnterBytecodeDispatch(masm); |
| 1121 | } |
| 1122 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1123 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1124 | void Builtins::Generate_CompileLazy(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1125 | GenerateTailCallToReturnedCode(masm, Runtime::kCompileLazy); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 1126 | } |
| 1127 | |
| 1128 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1129 | void Builtins::Generate_CompileOptimized(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1130 | GenerateTailCallToReturnedCode(masm, |
| 1131 | Runtime::kCompileOptimized_NotConcurrent); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1132 | } |
| 1133 | |
| 1134 | |
| 1135 | void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1136 | GenerateTailCallToReturnedCode(masm, Runtime::kCompileOptimized_Concurrent); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1137 | } |
| 1138 | |
| 1139 | |
| 1140 | static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { |
| 1141 | // For now, we are relying on the fact that make_code_young doesn't do any |
| 1142 | // garbage collection which allows us to save/restore the registers without |
| 1143 | // worrying about which of them contain pointers. We also don't build an |
| 1144 | // internal frame to make the code faster, since we shouldn't have to do stack |
| 1145 | // crawls in MakeCodeYoung. This seems a bit fragile. |
| 1146 | |
| 1147 | // The following registers must be saved and restored when calling through to |
| 1148 | // the runtime: |
| 1149 | // r0 - contains return address (beginning of patch sequence) |
| 1150 | // r1 - isolate |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1151 | // r3 - new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1152 | FrameScope scope(masm, StackFrame::MANUAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1153 | __ stm(db_w, sp, r0.bit() | r1.bit() | r3.bit() | fp.bit() | lr.bit()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1154 | __ PrepareCallCFunction(2, 0, r2); |
| 1155 | __ mov(r1, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 1156 | __ CallCFunction( |
| 1157 | ExternalReference::get_make_code_young_function(masm->isolate()), 2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1158 | __ ldm(ia_w, sp, r0.bit() | r1.bit() | r3.bit() | fp.bit() | lr.bit()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1159 | __ mov(pc, r0); |
| 1160 | } |
| 1161 | |
| 1162 | #define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C) \ |
| 1163 | void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking( \ |
| 1164 | MacroAssembler* masm) { \ |
| 1165 | GenerateMakeCodeYoungAgainCommon(masm); \ |
| 1166 | } \ |
| 1167 | void Builtins::Generate_Make##C##CodeYoungAgainOddMarking( \ |
| 1168 | MacroAssembler* masm) { \ |
| 1169 | GenerateMakeCodeYoungAgainCommon(masm); \ |
| 1170 | } |
| 1171 | CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR) |
| 1172 | #undef DEFINE_CODE_AGE_BUILTIN_GENERATOR |
| 1173 | |
| 1174 | |
| 1175 | void Builtins::Generate_MarkCodeAsExecutedOnce(MacroAssembler* masm) { |
| 1176 | // For now, as in GenerateMakeCodeYoungAgainCommon, we are relying on the fact |
| 1177 | // that make_code_young doesn't do any garbage collection which allows us to |
| 1178 | // save/restore the registers without worrying about which of them contain |
| 1179 | // pointers. |
| 1180 | |
| 1181 | // The following registers must be saved and restored when calling through to |
| 1182 | // the runtime: |
| 1183 | // r0 - contains return address (beginning of patch sequence) |
| 1184 | // r1 - isolate |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1185 | // r3 - new target |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1186 | FrameScope scope(masm, StackFrame::MANUAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1187 | __ stm(db_w, sp, r0.bit() | r1.bit() | r3.bit() | fp.bit() | lr.bit()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1188 | __ PrepareCallCFunction(2, 0, r2); |
| 1189 | __ mov(r1, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 1190 | __ CallCFunction(ExternalReference::get_mark_code_as_executed_function( |
| 1191 | masm->isolate()), 2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1192 | __ ldm(ia_w, sp, r0.bit() | r1.bit() | r3.bit() | fp.bit() | lr.bit()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1193 | |
| 1194 | // Perform prologue operations usually performed by the young code stub. |
| 1195 | __ PushFixedFrame(r1); |
| 1196 | __ add(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
| 1197 | |
| 1198 | // Jump to point after the code-age stub. |
| 1199 | __ add(r0, r0, Operand(kNoCodeAgeSequenceLength)); |
| 1200 | __ mov(pc, r0); |
| 1201 | } |
| 1202 | |
| 1203 | |
| 1204 | void Builtins::Generate_MarkCodeAsExecutedTwice(MacroAssembler* masm) { |
| 1205 | GenerateMakeCodeYoungAgainCommon(masm); |
| 1206 | } |
| 1207 | |
| 1208 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1209 | void Builtins::Generate_MarkCodeAsToBeExecutedOnce(MacroAssembler* masm) { |
| 1210 | Generate_MarkCodeAsExecutedOnce(masm); |
| 1211 | } |
| 1212 | |
| 1213 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1214 | static void Generate_NotifyStubFailureHelper(MacroAssembler* masm, |
| 1215 | SaveFPRegsMode save_doubles) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1216 | { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1217 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1218 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1219 | // Preserve registers across notification, this is important for compiled |
| 1220 | // stubs that tail call the runtime on deopts passing their parameters in |
| 1221 | // registers. |
| 1222 | __ stm(db_w, sp, kJSCallerSaved | kCalleeSaved); |
| 1223 | // Pass the function and deoptimization type to the runtime system. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1224 | __ CallRuntime(Runtime::kNotifyStubFailure, save_doubles); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1225 | __ ldm(ia_w, sp, kJSCallerSaved | kCalleeSaved); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1226 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1227 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1228 | __ add(sp, sp, Operand(kPointerSize)); // Ignore state |
| 1229 | __ mov(pc, lr); // Jump to miss handler |
| 1230 | } |
| 1231 | |
| 1232 | |
| 1233 | void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) { |
| 1234 | Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs); |
| 1235 | } |
| 1236 | |
| 1237 | |
| 1238 | void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) { |
| 1239 | Generate_NotifyStubFailureHelper(masm, kSaveFPRegs); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1240 | } |
| 1241 | |
| 1242 | |
| 1243 | static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm, |
| 1244 | Deoptimizer::BailoutType type) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1245 | { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1246 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1247 | // Pass the function and deoptimization type to the runtime system. |
| 1248 | __ mov(r0, Operand(Smi::FromInt(static_cast<int>(type)))); |
| 1249 | __ push(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1250 | __ CallRuntime(Runtime::kNotifyDeoptimized); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1251 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1252 | |
| 1253 | // Get the full codegen state from the stack and untag it -> r6. |
| 1254 | __ ldr(r6, MemOperand(sp, 0 * kPointerSize)); |
| 1255 | __ SmiUntag(r6); |
| 1256 | // Switch on the state. |
| 1257 | Label with_tos_register, unknown_state; |
| 1258 | __ cmp(r6, Operand(FullCodeGenerator::NO_REGISTERS)); |
| 1259 | __ b(ne, &with_tos_register); |
| 1260 | __ add(sp, sp, Operand(1 * kPointerSize)); // Remove state. |
| 1261 | __ Ret(); |
| 1262 | |
| 1263 | __ bind(&with_tos_register); |
| 1264 | __ ldr(r0, MemOperand(sp, 1 * kPointerSize)); |
| 1265 | __ cmp(r6, Operand(FullCodeGenerator::TOS_REG)); |
| 1266 | __ b(ne, &unknown_state); |
| 1267 | __ add(sp, sp, Operand(2 * kPointerSize)); // Remove state. |
| 1268 | __ Ret(); |
| 1269 | |
| 1270 | __ bind(&unknown_state); |
| 1271 | __ stop("no cases left"); |
| 1272 | } |
| 1273 | |
| 1274 | |
| 1275 | void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { |
| 1276 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
| 1277 | } |
| 1278 | |
| 1279 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1280 | void Builtins::Generate_NotifySoftDeoptimized(MacroAssembler* masm) { |
| 1281 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::SOFT); |
| 1282 | } |
| 1283 | |
| 1284 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1285 | void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) { |
| 1286 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); |
| 1287 | } |
| 1288 | |
| 1289 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1290 | static void CompatibleReceiverCheck(MacroAssembler* masm, Register receiver, |
| 1291 | Register function_template_info, |
| 1292 | Register scratch0, Register scratch1, |
| 1293 | Register scratch2, |
| 1294 | Label* receiver_check_failed) { |
| 1295 | Register signature = scratch0; |
| 1296 | Register map = scratch1; |
| 1297 | Register constructor = scratch2; |
| 1298 | |
| 1299 | // If there is no signature, return the holder. |
| 1300 | __ ldr(signature, FieldMemOperand(function_template_info, |
| 1301 | FunctionTemplateInfo::kSignatureOffset)); |
| 1302 | __ CompareRoot(signature, Heap::kUndefinedValueRootIndex); |
| 1303 | Label receiver_check_passed; |
| 1304 | __ b(eq, &receiver_check_passed); |
| 1305 | |
| 1306 | // Walk the prototype chain. |
| 1307 | __ ldr(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 1308 | Label prototype_loop_start; |
| 1309 | __ bind(&prototype_loop_start); |
| 1310 | |
| 1311 | // Get the constructor, if any. |
| 1312 | __ GetMapConstructor(constructor, map, ip, ip); |
| 1313 | __ cmp(ip, Operand(JS_FUNCTION_TYPE)); |
| 1314 | Label next_prototype; |
| 1315 | __ b(ne, &next_prototype); |
| 1316 | Register type = constructor; |
| 1317 | __ ldr(type, |
| 1318 | FieldMemOperand(constructor, JSFunction::kSharedFunctionInfoOffset)); |
| 1319 | __ ldr(type, FieldMemOperand(type, SharedFunctionInfo::kFunctionDataOffset)); |
| 1320 | |
| 1321 | // Loop through the chain of inheriting function templates. |
| 1322 | Label function_template_loop; |
| 1323 | __ bind(&function_template_loop); |
| 1324 | |
| 1325 | // If the signatures match, we have a compatible receiver. |
| 1326 | __ cmp(signature, type); |
| 1327 | __ b(eq, &receiver_check_passed); |
| 1328 | |
| 1329 | // If the current type is not a FunctionTemplateInfo, load the next prototype |
| 1330 | // in the chain. |
| 1331 | __ JumpIfSmi(type, &next_prototype); |
| 1332 | __ CompareObjectType(type, ip, ip, FUNCTION_TEMPLATE_INFO_TYPE); |
| 1333 | |
| 1334 | // Otherwise load the parent function template and iterate. |
| 1335 | __ ldr(type, |
| 1336 | FieldMemOperand(type, FunctionTemplateInfo::kParentTemplateOffset), |
| 1337 | eq); |
| 1338 | __ b(&function_template_loop, eq); |
| 1339 | |
| 1340 | // Load the next prototype. |
| 1341 | __ bind(&next_prototype); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1342 | __ ldr(ip, FieldMemOperand(map, Map::kBitField3Offset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1343 | __ tst(ip, Operand(Map::HasHiddenPrototype::kMask)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1344 | __ b(eq, receiver_check_failed); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1345 | __ ldr(receiver, FieldMemOperand(map, Map::kPrototypeOffset)); |
| 1346 | __ ldr(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1347 | // Iterate. |
| 1348 | __ b(&prototype_loop_start); |
| 1349 | |
| 1350 | __ bind(&receiver_check_passed); |
| 1351 | } |
| 1352 | |
| 1353 | |
| 1354 | void Builtins::Generate_HandleFastApiCall(MacroAssembler* masm) { |
| 1355 | // ----------- S t a t e ------------- |
| 1356 | // -- r0 : number of arguments excluding receiver |
| 1357 | // -- r1 : callee |
| 1358 | // -- lr : return address |
| 1359 | // -- sp[0] : last argument |
| 1360 | // -- ... |
| 1361 | // -- sp[4 * (argc - 1)] : first argument |
| 1362 | // -- sp[4 * argc] : receiver |
| 1363 | // ----------------------------------- |
| 1364 | |
| 1365 | // Load the FunctionTemplateInfo. |
| 1366 | __ ldr(r3, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
| 1367 | __ ldr(r3, FieldMemOperand(r3, SharedFunctionInfo::kFunctionDataOffset)); |
| 1368 | |
| 1369 | // Do the compatible receiver check. |
| 1370 | Label receiver_check_failed; |
| 1371 | __ ldr(r2, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
| 1372 | CompatibleReceiverCheck(masm, r2, r3, r4, r5, r6, &receiver_check_failed); |
| 1373 | |
| 1374 | // Get the callback offset from the FunctionTemplateInfo, and jump to the |
| 1375 | // beginning of the code. |
| 1376 | __ ldr(r4, FieldMemOperand(r3, FunctionTemplateInfo::kCallCodeOffset)); |
| 1377 | __ ldr(r4, FieldMemOperand(r4, CallHandlerInfo::kFastHandlerOffset)); |
| 1378 | __ add(r4, r4, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 1379 | __ Jump(r4); |
| 1380 | |
| 1381 | // Compatible receiver check failed: throw an Illegal Invocation exception. |
| 1382 | __ bind(&receiver_check_failed); |
| 1383 | // Drop the arguments (including the receiver) |
| 1384 | __ add(r0, r0, Operand(1)); |
| 1385 | __ add(sp, sp, Operand(r0, LSL, kPointerSizeLog2)); |
| 1386 | __ TailCallRuntime(Runtime::kThrowIllegalInvocation); |
| 1387 | } |
| 1388 | |
| 1389 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1390 | void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1391 | // Lookup the function in the JavaScript frame. |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1392 | __ ldr(r0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1393 | { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1394 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 1395 | // Pass function as argument. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1396 | __ push(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1397 | __ CallRuntime(Runtime::kCompileForOnStackReplacement); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1398 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1399 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1400 | // If the code object is null, just return to the unoptimized code. |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1401 | Label skip; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1402 | __ cmp(r0, Operand(Smi::FromInt(0))); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1403 | __ b(ne, &skip); |
| 1404 | __ Ret(); |
| 1405 | |
| 1406 | __ bind(&skip); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1407 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1408 | // Load deoptimization data from the code object. |
| 1409 | // <deopt_data> = <code>[#deoptimization_data_offset] |
| 1410 | __ ldr(r1, FieldMemOperand(r0, Code::kDeoptimizationDataOffset)); |
| 1411 | |
| 1412 | { ConstantPoolUnavailableScope constant_pool_unavailable(masm); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1413 | __ add(r0, r0, Operand(Code::kHeaderSize - kHeapObjectTag)); // Code start |
| 1414 | |
| 1415 | if (FLAG_enable_embedded_constant_pool) { |
| 1416 | __ LoadConstantPoolPointerRegisterFromCodeTargetAddress(r0); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1417 | } |
| 1418 | |
| 1419 | // Load the OSR entrypoint offset from the deoptimization data. |
| 1420 | // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset] |
| 1421 | __ ldr(r1, FieldMemOperand(r1, FixedArray::OffsetOfElementAt( |
| 1422 | DeoptimizationInputData::kOsrPcOffsetIndex))); |
| 1423 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1424 | // Compute the target address = code start + osr_offset |
| 1425 | __ add(lr, r0, Operand::SmiUntag(r1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1426 | |
| 1427 | // And "return" to the OSR entry point of the function. |
| 1428 | __ Ret(); |
| 1429 | } |
| 1430 | } |
| 1431 | |
| 1432 | |
| 1433 | void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) { |
| 1434 | // We check the stack limit as indicator that recompilation might be done. |
| 1435 | Label ok; |
| 1436 | __ LoadRoot(ip, Heap::kStackLimitRootIndex); |
| 1437 | __ cmp(sp, Operand(ip)); |
| 1438 | __ b(hs, &ok); |
| 1439 | { |
| 1440 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1441 | __ CallRuntime(Runtime::kStackGuard); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1442 | } |
| 1443 | __ Jump(masm->isolate()->builtins()->OnStackReplacement(), |
| 1444 | RelocInfo::CODE_TARGET); |
| 1445 | |
| 1446 | __ bind(&ok); |
| 1447 | __ Ret(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1448 | } |
| 1449 | |
| 1450 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1451 | // static |
| 1452 | void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm, |
| 1453 | int field_index) { |
| 1454 | // ----------- S t a t e ------------- |
| 1455 | // -- lr : return address |
| 1456 | // -- sp[0] : receiver |
| 1457 | // ----------------------------------- |
| 1458 | |
| 1459 | // 1. Pop receiver into r0 and check that it's actually a JSDate object. |
| 1460 | Label receiver_not_date; |
| 1461 | { |
| 1462 | __ Pop(r0); |
| 1463 | __ JumpIfSmi(r0, &receiver_not_date); |
| 1464 | __ CompareObjectType(r0, r1, r2, JS_DATE_TYPE); |
| 1465 | __ b(ne, &receiver_not_date); |
| 1466 | } |
| 1467 | |
| 1468 | // 2. Load the specified date field, falling back to the runtime as necessary. |
| 1469 | if (field_index == JSDate::kDateValue) { |
| 1470 | __ ldr(r0, FieldMemOperand(r0, JSDate::kValueOffset)); |
| 1471 | } else { |
| 1472 | if (field_index < JSDate::kFirstUncachedField) { |
| 1473 | Label stamp_mismatch; |
| 1474 | __ mov(r1, Operand(ExternalReference::date_cache_stamp(masm->isolate()))); |
| 1475 | __ ldr(r1, MemOperand(r1)); |
| 1476 | __ ldr(ip, FieldMemOperand(r0, JSDate::kCacheStampOffset)); |
| 1477 | __ cmp(r1, ip); |
| 1478 | __ b(ne, &stamp_mismatch); |
| 1479 | __ ldr(r0, FieldMemOperand( |
| 1480 | r0, JSDate::kValueOffset + field_index * kPointerSize)); |
| 1481 | __ Ret(); |
| 1482 | __ bind(&stamp_mismatch); |
| 1483 | } |
| 1484 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1485 | __ PrepareCallCFunction(2, r1); |
| 1486 | __ mov(r1, Operand(Smi::FromInt(field_index))); |
| 1487 | __ CallCFunction( |
| 1488 | ExternalReference::get_date_field_function(masm->isolate()), 2); |
| 1489 | } |
| 1490 | __ Ret(); |
| 1491 | |
| 1492 | // 3. Raise a TypeError if the receiver is not a date. |
| 1493 | __ bind(&receiver_not_date); |
| 1494 | __ TailCallRuntime(Runtime::kThrowNotDateError); |
| 1495 | } |
| 1496 | |
| 1497 | |
| 1498 | // static |
| 1499 | void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) { |
| 1500 | // ----------- S t a t e ------------- |
| 1501 | // -- r0 : argc |
| 1502 | // -- sp[0] : argArray |
| 1503 | // -- sp[4] : thisArg |
| 1504 | // -- sp[8] : receiver |
| 1505 | // ----------------------------------- |
| 1506 | |
| 1507 | // 1. Load receiver into r1, argArray into r0 (if present), remove all |
| 1508 | // arguments from the stack (including the receiver), and push thisArg (if |
| 1509 | // present) instead. |
| 1510 | { |
| 1511 | __ LoadRoot(r2, Heap::kUndefinedValueRootIndex); |
| 1512 | __ mov(r3, r2); |
| 1513 | __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); // receiver |
| 1514 | __ sub(r4, r0, Operand(1), SetCC); |
| 1515 | __ ldr(r2, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // thisArg |
| 1516 | __ sub(r4, r4, Operand(1), SetCC, ge); |
| 1517 | __ ldr(r3, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // argArray |
| 1518 | __ add(sp, sp, Operand(r0, LSL, kPointerSizeLog2)); |
| 1519 | __ str(r2, MemOperand(sp, 0)); |
| 1520 | __ mov(r0, r3); |
| 1521 | } |
| 1522 | |
| 1523 | // ----------- S t a t e ------------- |
| 1524 | // -- r0 : argArray |
| 1525 | // -- r1 : receiver |
| 1526 | // -- sp[0] : thisArg |
| 1527 | // ----------------------------------- |
| 1528 | |
| 1529 | // 2. Make sure the receiver is actually callable. |
| 1530 | Label receiver_not_callable; |
| 1531 | __ JumpIfSmi(r1, &receiver_not_callable); |
| 1532 | __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 1533 | __ ldrb(r4, FieldMemOperand(r4, Map::kBitFieldOffset)); |
| 1534 | __ tst(r4, Operand(1 << Map::kIsCallable)); |
| 1535 | __ b(eq, &receiver_not_callable); |
| 1536 | |
| 1537 | // 3. Tail call with no arguments if argArray is null or undefined. |
| 1538 | Label no_arguments; |
| 1539 | __ JumpIfRoot(r0, Heap::kNullValueRootIndex, &no_arguments); |
| 1540 | __ JumpIfRoot(r0, Heap::kUndefinedValueRootIndex, &no_arguments); |
| 1541 | |
| 1542 | // 4a. Apply the receiver to the given argArray (passing undefined for |
| 1543 | // new.target). |
| 1544 | __ LoadRoot(r3, Heap::kUndefinedValueRootIndex); |
| 1545 | __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); |
| 1546 | |
| 1547 | // 4b. The argArray is either null or undefined, so we tail call without any |
| 1548 | // arguments to the receiver. |
| 1549 | __ bind(&no_arguments); |
| 1550 | { |
| 1551 | __ mov(r0, Operand(0)); |
| 1552 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
| 1553 | } |
| 1554 | |
| 1555 | // 4c. The receiver is not callable, throw an appropriate TypeError. |
| 1556 | __ bind(&receiver_not_callable); |
| 1557 | { |
| 1558 | __ str(r1, MemOperand(sp, 0)); |
| 1559 | __ TailCallRuntime(Runtime::kThrowApplyNonFunction); |
| 1560 | } |
| 1561 | } |
| 1562 | |
| 1563 | |
| 1564 | // static |
| 1565 | void Builtins::Generate_FunctionPrototypeCall(MacroAssembler* masm) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1566 | // 1. Make sure we have at least one argument. |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 1567 | // r0: actual number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1568 | { |
| 1569 | Label done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1570 | __ cmp(r0, Operand::Zero()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1571 | __ b(ne, &done); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1572 | __ PushRoot(Heap::kUndefinedValueRootIndex); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1573 | __ add(r0, r0, Operand(1)); |
| 1574 | __ bind(&done); |
| 1575 | } |
| 1576 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1577 | // 2. Get the callable to call (passed as receiver) from the stack. |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 1578 | // r0: actual number of arguments |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 1579 | __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1580 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1581 | // 3. Shift arguments and return address one slot down on the stack |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 1582 | // (overwriting the original receiver). Adjust argument count to make |
| 1583 | // the original first argument the new receiver. |
| 1584 | // r0: actual number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1585 | // r1: callable |
| 1586 | { |
| 1587 | Label loop; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1588 | // Calculate the copy start address (destination). Copy end address is sp. |
| 1589 | __ add(r2, sp, Operand(r0, LSL, kPointerSizeLog2)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1590 | |
| 1591 | __ bind(&loop); |
| 1592 | __ ldr(ip, MemOperand(r2, -kPointerSize)); |
| 1593 | __ str(ip, MemOperand(r2)); |
| 1594 | __ sub(r2, r2, Operand(kPointerSize)); |
| 1595 | __ cmp(r2, sp); |
| 1596 | __ b(ne, &loop); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 1597 | // Adjust the actual number of arguments and remove the top element |
| 1598 | // (which is a copy of the last argument). |
| 1599 | __ sub(r0, r0, Operand(1)); |
| 1600 | __ pop(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1601 | } |
| 1602 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1603 | // 4. Call the callable. |
| 1604 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1605 | } |
| 1606 | |
| 1607 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1608 | void Builtins::Generate_ReflectApply(MacroAssembler* masm) { |
| 1609 | // ----------- S t a t e ------------- |
| 1610 | // -- r0 : argc |
| 1611 | // -- sp[0] : argumentsList |
| 1612 | // -- sp[4] : thisArgument |
| 1613 | // -- sp[8] : target |
| 1614 | // -- sp[12] : receiver |
| 1615 | // ----------------------------------- |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1616 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1617 | // 1. Load target into r1 (if present), argumentsList into r0 (if present), |
| 1618 | // remove all arguments from the stack (including the receiver), and push |
| 1619 | // thisArgument (if present) instead. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1620 | { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1621 | __ LoadRoot(r1, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1622 | __ mov(r2, r1); |
| 1623 | __ mov(r3, r1); |
| 1624 | __ sub(r4, r0, Operand(1), SetCC); |
| 1625 | __ ldr(r1, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // target |
| 1626 | __ sub(r4, r4, Operand(1), SetCC, ge); |
| 1627 | __ ldr(r2, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // thisArgument |
| 1628 | __ sub(r4, r4, Operand(1), SetCC, ge); |
| 1629 | __ ldr(r3, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // argumentsList |
| 1630 | __ add(sp, sp, Operand(r0, LSL, kPointerSizeLog2)); |
| 1631 | __ str(r2, MemOperand(sp, 0)); |
| 1632 | __ mov(r0, r3); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1633 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1634 | |
| 1635 | // ----------- S t a t e ------------- |
| 1636 | // -- r0 : argumentsList |
| 1637 | // -- r1 : target |
| 1638 | // -- sp[0] : thisArgument |
| 1639 | // ----------------------------------- |
| 1640 | |
| 1641 | // 2. Make sure the target is actually callable. |
| 1642 | Label target_not_callable; |
| 1643 | __ JumpIfSmi(r1, &target_not_callable); |
| 1644 | __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 1645 | __ ldrb(r4, FieldMemOperand(r4, Map::kBitFieldOffset)); |
| 1646 | __ tst(r4, Operand(1 << Map::kIsCallable)); |
| 1647 | __ b(eq, &target_not_callable); |
| 1648 | |
| 1649 | // 3a. Apply the target to the given argumentsList (passing undefined for |
| 1650 | // new.target). |
| 1651 | __ LoadRoot(r3, Heap::kUndefinedValueRootIndex); |
| 1652 | __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); |
| 1653 | |
| 1654 | // 3b. The target is not callable, throw an appropriate TypeError. |
| 1655 | __ bind(&target_not_callable); |
| 1656 | { |
| 1657 | __ str(r1, MemOperand(sp, 0)); |
| 1658 | __ TailCallRuntime(Runtime::kThrowApplyNonFunction); |
| 1659 | } |
| 1660 | } |
| 1661 | |
| 1662 | |
| 1663 | void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) { |
| 1664 | // ----------- S t a t e ------------- |
| 1665 | // -- r0 : argc |
| 1666 | // -- sp[0] : new.target (optional) |
| 1667 | // -- sp[4] : argumentsList |
| 1668 | // -- sp[8] : target |
| 1669 | // -- sp[12] : receiver |
| 1670 | // ----------------------------------- |
| 1671 | |
| 1672 | // 1. Load target into r1 (if present), argumentsList into r0 (if present), |
| 1673 | // new.target into r3 (if present, otherwise use target), remove all |
| 1674 | // arguments from the stack (including the receiver), and push thisArgument |
| 1675 | // (if present) instead. |
| 1676 | { |
| 1677 | __ LoadRoot(r1, Heap::kUndefinedValueRootIndex); |
| 1678 | __ mov(r2, r1); |
| 1679 | __ str(r2, MemOperand(sp, r0, LSL, kPointerSizeLog2)); // receiver |
| 1680 | __ sub(r4, r0, Operand(1), SetCC); |
| 1681 | __ ldr(r1, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // target |
| 1682 | __ mov(r3, r1); // new.target defaults to target |
| 1683 | __ sub(r4, r4, Operand(1), SetCC, ge); |
| 1684 | __ ldr(r2, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // argumentsList |
| 1685 | __ sub(r4, r4, Operand(1), SetCC, ge); |
| 1686 | __ ldr(r3, MemOperand(sp, r4, LSL, kPointerSizeLog2), ge); // new.target |
| 1687 | __ add(sp, sp, Operand(r0, LSL, kPointerSizeLog2)); |
| 1688 | __ mov(r0, r2); |
| 1689 | } |
| 1690 | |
| 1691 | // ----------- S t a t e ------------- |
| 1692 | // -- r0 : argumentsList |
| 1693 | // -- r3 : new.target |
| 1694 | // -- r1 : target |
| 1695 | // -- sp[0] : receiver (undefined) |
| 1696 | // ----------------------------------- |
| 1697 | |
| 1698 | // 2. Make sure the target is actually a constructor. |
| 1699 | Label target_not_constructor; |
| 1700 | __ JumpIfSmi(r1, &target_not_constructor); |
| 1701 | __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 1702 | __ ldrb(r4, FieldMemOperand(r4, Map::kBitFieldOffset)); |
| 1703 | __ tst(r4, Operand(1 << Map::kIsConstructor)); |
| 1704 | __ b(eq, &target_not_constructor); |
| 1705 | |
| 1706 | // 3. Make sure the target is actually a constructor. |
| 1707 | Label new_target_not_constructor; |
| 1708 | __ JumpIfSmi(r3, &new_target_not_constructor); |
| 1709 | __ ldr(r4, FieldMemOperand(r3, HeapObject::kMapOffset)); |
| 1710 | __ ldrb(r4, FieldMemOperand(r4, Map::kBitFieldOffset)); |
| 1711 | __ tst(r4, Operand(1 << Map::kIsConstructor)); |
| 1712 | __ b(eq, &new_target_not_constructor); |
| 1713 | |
| 1714 | // 4a. Construct the target with the given new.target and argumentsList. |
| 1715 | __ Jump(masm->isolate()->builtins()->Apply(), RelocInfo::CODE_TARGET); |
| 1716 | |
| 1717 | // 4b. The target is not a constructor, throw an appropriate TypeError. |
| 1718 | __ bind(&target_not_constructor); |
| 1719 | { |
| 1720 | __ str(r1, MemOperand(sp, 0)); |
| 1721 | __ TailCallRuntime(Runtime::kThrowCalledNonCallable); |
| 1722 | } |
| 1723 | |
| 1724 | // 4c. The new.target is not a constructor, throw an appropriate TypeError. |
| 1725 | __ bind(&new_target_not_constructor); |
| 1726 | { |
| 1727 | __ str(r3, MemOperand(sp, 0)); |
| 1728 | __ TailCallRuntime(Runtime::kThrowCalledNonCallable); |
| 1729 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1730 | } |
| 1731 | |
| 1732 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1733 | static void ArgumentAdaptorStackCheck(MacroAssembler* masm, |
| 1734 | Label* stack_overflow) { |
| 1735 | // ----------- S t a t e ------------- |
| 1736 | // -- r0 : actual number of arguments |
| 1737 | // -- r1 : function (passed through to callee) |
| 1738 | // -- r2 : expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1739 | // -- r3 : new target (passed through to callee) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1740 | // ----------------------------------- |
| 1741 | // Check the stack for overflow. We are not trying to catch |
| 1742 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 1743 | // limit" is checked. |
| 1744 | __ LoadRoot(r5, Heap::kRealStackLimitRootIndex); |
| 1745 | // Make r5 the space we have left. The stack might already be overflowed |
| 1746 | // here which will cause r5 to become negative. |
| 1747 | __ sub(r5, sp, r5); |
| 1748 | // Check if the arguments will overflow the stack. |
| 1749 | __ cmp(r5, Operand(r2, LSL, kPointerSizeLog2)); |
| 1750 | __ b(le, stack_overflow); // Signed comparison. |
| 1751 | } |
| 1752 | |
| 1753 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1754 | static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1755 | __ SmiTag(r0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1756 | __ mov(r4, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1757 | __ stm(db_w, sp, r0.bit() | r1.bit() | r4.bit() | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1758 | (FLAG_enable_embedded_constant_pool ? pp.bit() : 0) | |
| 1759 | fp.bit() | lr.bit()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1760 | __ add(fp, sp, |
| 1761 | Operand(StandardFrameConstants::kFixedFrameSizeFromFp + kPointerSize)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1762 | } |
| 1763 | |
| 1764 | |
| 1765 | static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1766 | // ----------- S t a t e ------------- |
| 1767 | // -- r0 : result being passed through |
| 1768 | // ----------------------------------- |
| 1769 | // Get the number of arguments passed (as a smi), tear down the frame and |
| 1770 | // then tear down the parameters. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1771 | __ ldr(r1, MemOperand(fp, -(StandardFrameConstants::kFixedFrameSizeFromFp + |
| 1772 | kPointerSize))); |
| 1773 | |
| 1774 | __ LeaveFrame(StackFrame::ARGUMENTS_ADAPTOR); |
| 1775 | __ add(sp, sp, Operand::PointerOffsetFromSmiKey(r1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1776 | __ add(sp, sp, Operand(kPointerSize)); // adjust for receiver |
| 1777 | } |
| 1778 | |
| 1779 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1780 | // static |
| 1781 | void Builtins::Generate_Apply(MacroAssembler* masm) { |
| 1782 | // ----------- S t a t e ------------- |
| 1783 | // -- r0 : argumentsList |
| 1784 | // -- r1 : target |
| 1785 | // -- r3 : new.target (checked to be constructor or undefined) |
| 1786 | // -- sp[0] : thisArgument |
| 1787 | // ----------------------------------- |
| 1788 | |
| 1789 | // Create the list of arguments from the array-like argumentsList. |
| 1790 | { |
| 1791 | Label create_arguments, create_array, create_runtime, done_create; |
| 1792 | __ JumpIfSmi(r0, &create_runtime); |
| 1793 | |
| 1794 | // Load the map of argumentsList into r2. |
| 1795 | __ ldr(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 1796 | |
| 1797 | // Load native context into r4. |
| 1798 | __ ldr(r4, NativeContextMemOperand()); |
| 1799 | |
| 1800 | // Check if argumentsList is an (unmodified) arguments object. |
| 1801 | __ ldr(ip, ContextMemOperand(r4, Context::SLOPPY_ARGUMENTS_MAP_INDEX)); |
| 1802 | __ cmp(ip, r2); |
| 1803 | __ b(eq, &create_arguments); |
| 1804 | __ ldr(ip, ContextMemOperand(r4, Context::STRICT_ARGUMENTS_MAP_INDEX)); |
| 1805 | __ cmp(ip, r2); |
| 1806 | __ b(eq, &create_arguments); |
| 1807 | |
| 1808 | // Check if argumentsList is a fast JSArray. |
| 1809 | __ CompareInstanceType(r2, ip, JS_ARRAY_TYPE); |
| 1810 | __ b(eq, &create_array); |
| 1811 | |
| 1812 | // Ask the runtime to create the list (actually a FixedArray). |
| 1813 | __ bind(&create_runtime); |
| 1814 | { |
| 1815 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 1816 | __ Push(r1, r3, r0); |
| 1817 | __ CallRuntime(Runtime::kCreateListFromArrayLike); |
| 1818 | __ Pop(r1, r3); |
| 1819 | __ ldr(r2, FieldMemOperand(r0, FixedArray::kLengthOffset)); |
| 1820 | __ SmiUntag(r2); |
| 1821 | } |
| 1822 | __ jmp(&done_create); |
| 1823 | |
| 1824 | // Try to create the list from an arguments object. |
| 1825 | __ bind(&create_arguments); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1826 | __ ldr(r2, FieldMemOperand(r0, JSArgumentsObject::kLengthOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1827 | __ ldr(r4, FieldMemOperand(r0, JSObject::kElementsOffset)); |
| 1828 | __ ldr(ip, FieldMemOperand(r4, FixedArray::kLengthOffset)); |
| 1829 | __ cmp(r2, ip); |
| 1830 | __ b(ne, &create_runtime); |
| 1831 | __ SmiUntag(r2); |
| 1832 | __ mov(r0, r4); |
| 1833 | __ b(&done_create); |
| 1834 | |
| 1835 | // Try to create the list from a JSArray object. |
| 1836 | __ bind(&create_array); |
| 1837 | __ ldr(r2, FieldMemOperand(r2, Map::kBitField2Offset)); |
| 1838 | __ DecodeField<Map::ElementsKindBits>(r2); |
| 1839 | STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); |
| 1840 | STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 1841 | STATIC_ASSERT(FAST_ELEMENTS == 2); |
| 1842 | __ cmp(r2, Operand(FAST_ELEMENTS)); |
| 1843 | __ b(hi, &create_runtime); |
| 1844 | __ cmp(r2, Operand(FAST_HOLEY_SMI_ELEMENTS)); |
| 1845 | __ b(eq, &create_runtime); |
| 1846 | __ ldr(r2, FieldMemOperand(r0, JSArray::kLengthOffset)); |
| 1847 | __ ldr(r0, FieldMemOperand(r0, JSArray::kElementsOffset)); |
| 1848 | __ SmiUntag(r2); |
| 1849 | |
| 1850 | __ bind(&done_create); |
| 1851 | } |
| 1852 | |
| 1853 | // Check for stack overflow. |
| 1854 | { |
| 1855 | // Check the stack for overflow. We are not trying to catch interruptions |
| 1856 | // (i.e. debug break and preemption) here, so check the "real stack limit". |
| 1857 | Label done; |
| 1858 | __ LoadRoot(ip, Heap::kRealStackLimitRootIndex); |
| 1859 | // Make ip the space we have left. The stack might already be overflowed |
| 1860 | // here which will cause ip to become negative. |
| 1861 | __ sub(ip, sp, ip); |
| 1862 | // Check if the arguments will overflow the stack. |
| 1863 | __ cmp(ip, Operand(r2, LSL, kPointerSizeLog2)); |
| 1864 | __ b(gt, &done); // Signed comparison. |
| 1865 | __ TailCallRuntime(Runtime::kThrowStackOverflow); |
| 1866 | __ bind(&done); |
| 1867 | } |
| 1868 | |
| 1869 | // ----------- S t a t e ------------- |
| 1870 | // -- r1 : target |
| 1871 | // -- r0 : args (a FixedArray built from argumentsList) |
| 1872 | // -- r2 : len (number of elements to push from args) |
| 1873 | // -- r3 : new.target (checked to be constructor or undefined) |
| 1874 | // -- sp[0] : thisArgument |
| 1875 | // ----------------------------------- |
| 1876 | |
| 1877 | // Push arguments onto the stack (thisArgument is already on the stack). |
| 1878 | { |
| 1879 | __ mov(r4, Operand(0)); |
| 1880 | Label done, loop; |
| 1881 | __ bind(&loop); |
| 1882 | __ cmp(r4, r2); |
| 1883 | __ b(eq, &done); |
| 1884 | __ add(ip, r0, Operand(r4, LSL, kPointerSizeLog2)); |
| 1885 | __ ldr(ip, FieldMemOperand(ip, FixedArray::kHeaderSize)); |
| 1886 | __ Push(ip); |
| 1887 | __ add(r4, r4, Operand(1)); |
| 1888 | __ b(&loop); |
| 1889 | __ bind(&done); |
| 1890 | __ Move(r0, r4); |
| 1891 | } |
| 1892 | |
| 1893 | // Dispatch to Call or Construct depending on whether new.target is undefined. |
| 1894 | { |
| 1895 | __ CompareRoot(r3, Heap::kUndefinedValueRootIndex); |
| 1896 | __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET, eq); |
| 1897 | __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
| 1898 | } |
| 1899 | } |
| 1900 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1901 | namespace { |
| 1902 | |
| 1903 | // Drops top JavaScript frame and an arguments adaptor frame below it (if |
| 1904 | // present) preserving all the arguments prepared for current call. |
| 1905 | // Does nothing if debugger is currently active. |
| 1906 | // ES6 14.6.3. PrepareForTailCall |
| 1907 | // |
| 1908 | // Stack structure for the function g() tail calling f(): |
| 1909 | // |
| 1910 | // ------- Caller frame: ------- |
| 1911 | // | ... |
| 1912 | // | g()'s arg M |
| 1913 | // | ... |
| 1914 | // | g()'s arg 1 |
| 1915 | // | g()'s receiver arg |
| 1916 | // | g()'s caller pc |
| 1917 | // ------- g()'s frame: ------- |
| 1918 | // | g()'s caller fp <- fp |
| 1919 | // | g()'s context |
| 1920 | // | function pointer: g |
| 1921 | // | ------------------------- |
| 1922 | // | ... |
| 1923 | // | ... |
| 1924 | // | f()'s arg N |
| 1925 | // | ... |
| 1926 | // | f()'s arg 1 |
| 1927 | // | f()'s receiver arg <- sp (f()'s caller pc is not on the stack yet!) |
| 1928 | // ---------------------- |
| 1929 | // |
| 1930 | void PrepareForTailCall(MacroAssembler* masm, Register args_reg, |
| 1931 | Register scratch1, Register scratch2, |
| 1932 | Register scratch3) { |
| 1933 | DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3)); |
| 1934 | Comment cmnt(masm, "[ PrepareForTailCall"); |
| 1935 | |
| 1936 | // Prepare for tail call only if the debugger is not active. |
| 1937 | Label done; |
| 1938 | ExternalReference debug_is_active = |
| 1939 | ExternalReference::debug_is_active_address(masm->isolate()); |
| 1940 | __ mov(scratch1, Operand(debug_is_active)); |
| 1941 | __ ldrb(scratch1, MemOperand(scratch1)); |
| 1942 | __ cmp(scratch1, Operand(0)); |
| 1943 | __ b(ne, &done); |
| 1944 | |
| 1945 | // Drop possible interpreter handler/stub frame. |
| 1946 | { |
| 1947 | Label no_interpreter_frame; |
| 1948 | __ ldr(scratch3, MemOperand(fp, StandardFrameConstants::kMarkerOffset)); |
| 1949 | __ cmp(scratch3, Operand(Smi::FromInt(StackFrame::STUB))); |
| 1950 | __ b(ne, &no_interpreter_frame); |
| 1951 | __ ldr(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 1952 | __ bind(&no_interpreter_frame); |
| 1953 | } |
| 1954 | |
| 1955 | // Check if next frame is an arguments adaptor frame. |
| 1956 | Label no_arguments_adaptor, formal_parameter_count_loaded; |
| 1957 | __ ldr(scratch2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 1958 | __ ldr(scratch3, |
| 1959 | MemOperand(scratch2, StandardFrameConstants::kContextOffset)); |
| 1960 | __ cmp(scratch3, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 1961 | __ b(ne, &no_arguments_adaptor); |
| 1962 | |
| 1963 | // Drop arguments adaptor frame and load arguments count. |
| 1964 | __ mov(fp, scratch2); |
| 1965 | __ ldr(scratch1, |
| 1966 | MemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 1967 | __ SmiUntag(scratch1); |
| 1968 | __ b(&formal_parameter_count_loaded); |
| 1969 | |
| 1970 | __ bind(&no_arguments_adaptor); |
| 1971 | // Load caller's formal parameter count |
| 1972 | __ ldr(scratch1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1973 | __ ldr(scratch1, |
| 1974 | FieldMemOperand(scratch1, JSFunction::kSharedFunctionInfoOffset)); |
| 1975 | __ ldr(scratch1, |
| 1976 | FieldMemOperand(scratch1, |
| 1977 | SharedFunctionInfo::kFormalParameterCountOffset)); |
| 1978 | __ SmiUntag(scratch1); |
| 1979 | |
| 1980 | __ bind(&formal_parameter_count_loaded); |
| 1981 | |
| 1982 | // Calculate the end of destination area where we will put the arguments |
| 1983 | // after we drop current frame. We add kPointerSize to count the receiver |
| 1984 | // argument which is not included into formal parameters count. |
| 1985 | Register dst_reg = scratch2; |
| 1986 | __ add(dst_reg, fp, Operand(scratch1, LSL, kPointerSizeLog2)); |
| 1987 | __ add(dst_reg, dst_reg, |
| 1988 | Operand(StandardFrameConstants::kCallerSPOffset + kPointerSize)); |
| 1989 | |
| 1990 | Register src_reg = scratch1; |
| 1991 | __ add(src_reg, sp, Operand(args_reg, LSL, kPointerSizeLog2)); |
| 1992 | // Count receiver argument as well (not included in args_reg). |
| 1993 | __ add(src_reg, src_reg, Operand(kPointerSize)); |
| 1994 | |
| 1995 | if (FLAG_debug_code) { |
| 1996 | __ cmp(src_reg, dst_reg); |
| 1997 | __ Check(lo, kStackAccessBelowStackPointer); |
| 1998 | } |
| 1999 | |
| 2000 | // Restore caller's frame pointer and return address now as they will be |
| 2001 | // overwritten by the copying loop. |
| 2002 | __ ldr(lr, MemOperand(fp, StandardFrameConstants::kCallerPCOffset)); |
| 2003 | __ ldr(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 2004 | |
| 2005 | // Now copy callee arguments to the caller frame going backwards to avoid |
| 2006 | // callee arguments corruption (source and destination areas could overlap). |
| 2007 | |
| 2008 | // Both src_reg and dst_reg are pointing to the word after the one to copy, |
| 2009 | // so they must be pre-decremented in the loop. |
| 2010 | Register tmp_reg = scratch3; |
| 2011 | Label loop, entry; |
| 2012 | __ b(&entry); |
| 2013 | __ bind(&loop); |
| 2014 | __ ldr(tmp_reg, MemOperand(src_reg, -kPointerSize, PreIndex)); |
| 2015 | __ str(tmp_reg, MemOperand(dst_reg, -kPointerSize, PreIndex)); |
| 2016 | __ bind(&entry); |
| 2017 | __ cmp(sp, src_reg); |
| 2018 | __ b(ne, &loop); |
| 2019 | |
| 2020 | // Leave current frame. |
| 2021 | __ mov(sp, dst_reg); |
| 2022 | |
| 2023 | __ bind(&done); |
| 2024 | } |
| 2025 | } // namespace |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2026 | |
| 2027 | // static |
| 2028 | void Builtins::Generate_CallFunction(MacroAssembler* masm, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2029 | ConvertReceiverMode mode, |
| 2030 | TailCallMode tail_call_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2031 | // ----------- S t a t e ------------- |
| 2032 | // -- r0 : the number of arguments (not including the receiver) |
| 2033 | // -- r1 : the function to call (checked to be a JSFunction) |
| 2034 | // ----------------------------------- |
| 2035 | __ AssertFunction(r1); |
| 2036 | |
| 2037 | // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList) |
| 2038 | // Check that the function is not a "classConstructor". |
| 2039 | Label class_constructor; |
| 2040 | __ ldr(r2, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
| 2041 | __ ldrb(r3, FieldMemOperand(r2, SharedFunctionInfo::kFunctionKindByteOffset)); |
| 2042 | __ tst(r3, Operand(SharedFunctionInfo::kClassConstructorBitsWithinByte)); |
| 2043 | __ b(ne, &class_constructor); |
| 2044 | |
| 2045 | // Enter the context of the function; ToObject has to run in the function |
| 2046 | // context, and we also need to take the global proxy from the function |
| 2047 | // context in case of conversion. |
| 2048 | STATIC_ASSERT(SharedFunctionInfo::kNativeByteOffset == |
| 2049 | SharedFunctionInfo::kStrictModeByteOffset); |
| 2050 | __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset)); |
| 2051 | // We need to convert the receiver for non-native sloppy mode functions. |
| 2052 | Label done_convert; |
| 2053 | __ ldrb(r3, FieldMemOperand(r2, SharedFunctionInfo::kNativeByteOffset)); |
| 2054 | __ tst(r3, Operand((1 << SharedFunctionInfo::kNativeBitWithinByte) | |
| 2055 | (1 << SharedFunctionInfo::kStrictModeBitWithinByte))); |
| 2056 | __ b(ne, &done_convert); |
| 2057 | { |
| 2058 | // ----------- S t a t e ------------- |
| 2059 | // -- r0 : the number of arguments (not including the receiver) |
| 2060 | // -- r1 : the function to call (checked to be a JSFunction) |
| 2061 | // -- r2 : the shared function info. |
| 2062 | // -- cp : the function context. |
| 2063 | // ----------------------------------- |
| 2064 | |
| 2065 | if (mode == ConvertReceiverMode::kNullOrUndefined) { |
| 2066 | // Patch receiver to global proxy. |
| 2067 | __ LoadGlobalProxy(r3); |
| 2068 | } else { |
| 2069 | Label convert_to_object, convert_receiver; |
| 2070 | __ ldr(r3, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
| 2071 | __ JumpIfSmi(r3, &convert_to_object); |
| 2072 | STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| 2073 | __ CompareObjectType(r3, r4, r4, FIRST_JS_RECEIVER_TYPE); |
| 2074 | __ b(hs, &done_convert); |
| 2075 | if (mode != ConvertReceiverMode::kNotNullOrUndefined) { |
| 2076 | Label convert_global_proxy; |
| 2077 | __ JumpIfRoot(r3, Heap::kUndefinedValueRootIndex, |
| 2078 | &convert_global_proxy); |
| 2079 | __ JumpIfNotRoot(r3, Heap::kNullValueRootIndex, &convert_to_object); |
| 2080 | __ bind(&convert_global_proxy); |
| 2081 | { |
| 2082 | // Patch receiver to global proxy. |
| 2083 | __ LoadGlobalProxy(r3); |
| 2084 | } |
| 2085 | __ b(&convert_receiver); |
| 2086 | } |
| 2087 | __ bind(&convert_to_object); |
| 2088 | { |
| 2089 | // Convert receiver using ToObject. |
| 2090 | // TODO(bmeurer): Inline the allocation here to avoid building the frame |
| 2091 | // in the fast case? (fall back to AllocateInNewSpace?) |
| 2092 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 2093 | __ SmiTag(r0); |
| 2094 | __ Push(r0, r1); |
| 2095 | __ mov(r0, r3); |
| 2096 | ToObjectStub stub(masm->isolate()); |
| 2097 | __ CallStub(&stub); |
| 2098 | __ mov(r3, r0); |
| 2099 | __ Pop(r0, r1); |
| 2100 | __ SmiUntag(r0); |
| 2101 | } |
| 2102 | __ ldr(r2, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
| 2103 | __ bind(&convert_receiver); |
| 2104 | } |
| 2105 | __ str(r3, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
| 2106 | } |
| 2107 | __ bind(&done_convert); |
| 2108 | |
| 2109 | // ----------- S t a t e ------------- |
| 2110 | // -- r0 : the number of arguments (not including the receiver) |
| 2111 | // -- r1 : the function to call (checked to be a JSFunction) |
| 2112 | // -- r2 : the shared function info. |
| 2113 | // -- cp : the function context. |
| 2114 | // ----------------------------------- |
| 2115 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2116 | if (tail_call_mode == TailCallMode::kAllow) { |
| 2117 | PrepareForTailCall(masm, r0, r3, r4, r5); |
| 2118 | } |
| 2119 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2120 | __ ldr(r2, |
| 2121 | FieldMemOperand(r2, SharedFunctionInfo::kFormalParameterCountOffset)); |
| 2122 | __ SmiUntag(r2); |
| 2123 | ParameterCount actual(r0); |
| 2124 | ParameterCount expected(r2); |
| 2125 | __ InvokeFunctionCode(r1, no_reg, expected, actual, JUMP_FUNCTION, |
| 2126 | CheckDebugStepCallWrapper()); |
| 2127 | |
| 2128 | // The function is a "classConstructor", need to raise an exception. |
| 2129 | __ bind(&class_constructor); |
| 2130 | { |
| 2131 | FrameScope frame(masm, StackFrame::INTERNAL); |
| 2132 | __ push(r1); |
| 2133 | __ CallRuntime(Runtime::kThrowConstructorNonCallableError); |
| 2134 | } |
| 2135 | } |
| 2136 | |
| 2137 | |
| 2138 | namespace { |
| 2139 | |
| 2140 | void Generate_PushBoundArguments(MacroAssembler* masm) { |
| 2141 | // ----------- S t a t e ------------- |
| 2142 | // -- r0 : the number of arguments (not including the receiver) |
| 2143 | // -- r1 : target (checked to be a JSBoundFunction) |
| 2144 | // -- r3 : new.target (only in case of [[Construct]]) |
| 2145 | // ----------------------------------- |
| 2146 | |
| 2147 | // Load [[BoundArguments]] into r2 and length of that into r4. |
| 2148 | Label no_bound_arguments; |
| 2149 | __ ldr(r2, FieldMemOperand(r1, JSBoundFunction::kBoundArgumentsOffset)); |
| 2150 | __ ldr(r4, FieldMemOperand(r2, FixedArray::kLengthOffset)); |
| 2151 | __ SmiUntag(r4); |
| 2152 | __ cmp(r4, Operand(0)); |
| 2153 | __ b(eq, &no_bound_arguments); |
| 2154 | { |
| 2155 | // ----------- S t a t e ------------- |
| 2156 | // -- r0 : the number of arguments (not including the receiver) |
| 2157 | // -- r1 : target (checked to be a JSBoundFunction) |
| 2158 | // -- r2 : the [[BoundArguments]] (implemented as FixedArray) |
| 2159 | // -- r3 : new.target (only in case of [[Construct]]) |
| 2160 | // -- r4 : the number of [[BoundArguments]] |
| 2161 | // ----------------------------------- |
| 2162 | |
| 2163 | // Reserve stack space for the [[BoundArguments]]. |
| 2164 | { |
| 2165 | Label done; |
| 2166 | __ sub(sp, sp, Operand(r4, LSL, kPointerSizeLog2)); |
| 2167 | // Check the stack for overflow. We are not trying to catch interruptions |
| 2168 | // (i.e. debug break and preemption) here, so check the "real stack |
| 2169 | // limit". |
| 2170 | __ CompareRoot(sp, Heap::kRealStackLimitRootIndex); |
| 2171 | __ b(gt, &done); // Signed comparison. |
| 2172 | // Restore the stack pointer. |
| 2173 | __ add(sp, sp, Operand(r4, LSL, kPointerSizeLog2)); |
| 2174 | { |
| 2175 | FrameScope scope(masm, StackFrame::MANUAL); |
| 2176 | __ EnterFrame(StackFrame::INTERNAL); |
| 2177 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 2178 | } |
| 2179 | __ bind(&done); |
| 2180 | } |
| 2181 | |
| 2182 | // Relocate arguments down the stack. |
| 2183 | { |
| 2184 | Label loop, done_loop; |
| 2185 | __ mov(r5, Operand(0)); |
| 2186 | __ bind(&loop); |
| 2187 | __ cmp(r5, r0); |
| 2188 | __ b(gt, &done_loop); |
| 2189 | __ ldr(ip, MemOperand(sp, r4, LSL, kPointerSizeLog2)); |
| 2190 | __ str(ip, MemOperand(sp, r5, LSL, kPointerSizeLog2)); |
| 2191 | __ add(r4, r4, Operand(1)); |
| 2192 | __ add(r5, r5, Operand(1)); |
| 2193 | __ b(&loop); |
| 2194 | __ bind(&done_loop); |
| 2195 | } |
| 2196 | |
| 2197 | // Copy [[BoundArguments]] to the stack (below the arguments). |
| 2198 | { |
| 2199 | Label loop; |
| 2200 | __ ldr(r4, FieldMemOperand(r2, FixedArray::kLengthOffset)); |
| 2201 | __ SmiUntag(r4); |
| 2202 | __ add(r2, r2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 2203 | __ bind(&loop); |
| 2204 | __ sub(r4, r4, Operand(1), SetCC); |
| 2205 | __ ldr(ip, MemOperand(r2, r4, LSL, kPointerSizeLog2)); |
| 2206 | __ str(ip, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
| 2207 | __ add(r0, r0, Operand(1)); |
| 2208 | __ b(gt, &loop); |
| 2209 | } |
| 2210 | } |
| 2211 | __ bind(&no_bound_arguments); |
| 2212 | } |
| 2213 | |
| 2214 | } // namespace |
| 2215 | |
| 2216 | |
| 2217 | // static |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2218 | void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm, |
| 2219 | TailCallMode tail_call_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2220 | // ----------- S t a t e ------------- |
| 2221 | // -- r0 : the number of arguments (not including the receiver) |
| 2222 | // -- r1 : the function to call (checked to be a JSBoundFunction) |
| 2223 | // ----------------------------------- |
| 2224 | __ AssertBoundFunction(r1); |
| 2225 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2226 | if (tail_call_mode == TailCallMode::kAllow) { |
| 2227 | PrepareForTailCall(masm, r0, r3, r4, r5); |
| 2228 | } |
| 2229 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2230 | // Patch the receiver to [[BoundThis]]. |
| 2231 | __ ldr(ip, FieldMemOperand(r1, JSBoundFunction::kBoundThisOffset)); |
| 2232 | __ str(ip, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
| 2233 | |
| 2234 | // Push the [[BoundArguments]] onto the stack. |
| 2235 | Generate_PushBoundArguments(masm); |
| 2236 | |
| 2237 | // Call the [[BoundTargetFunction]] via the Call builtin. |
| 2238 | __ ldr(r1, FieldMemOperand(r1, JSBoundFunction::kBoundTargetFunctionOffset)); |
| 2239 | __ mov(ip, Operand(ExternalReference(Builtins::kCall_ReceiverIsAny, |
| 2240 | masm->isolate()))); |
| 2241 | __ ldr(ip, MemOperand(ip)); |
| 2242 | __ add(pc, ip, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2243 | } |
| 2244 | |
| 2245 | |
| 2246 | // static |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2247 | void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode, |
| 2248 | TailCallMode tail_call_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2249 | // ----------- S t a t e ------------- |
| 2250 | // -- r0 : the number of arguments (not including the receiver) |
| 2251 | // -- r1 : the target to call (can be any Object). |
| 2252 | // ----------------------------------- |
| 2253 | |
| 2254 | Label non_callable, non_function, non_smi; |
| 2255 | __ JumpIfSmi(r1, &non_callable); |
| 2256 | __ bind(&non_smi); |
| 2257 | __ CompareObjectType(r1, r4, r5, JS_FUNCTION_TYPE); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2258 | __ Jump(masm->isolate()->builtins()->CallFunction(mode, tail_call_mode), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2259 | RelocInfo::CODE_TARGET, eq); |
| 2260 | __ cmp(r5, Operand(JS_BOUND_FUNCTION_TYPE)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2261 | __ Jump(masm->isolate()->builtins()->CallBoundFunction(tail_call_mode), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2262 | RelocInfo::CODE_TARGET, eq); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2263 | |
| 2264 | // Check if target has a [[Call]] internal method. |
| 2265 | __ ldrb(r4, FieldMemOperand(r4, Map::kBitFieldOffset)); |
| 2266 | __ tst(r4, Operand(1 << Map::kIsCallable)); |
| 2267 | __ b(eq, &non_callable); |
| 2268 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2269 | __ cmp(r5, Operand(JS_PROXY_TYPE)); |
| 2270 | __ b(ne, &non_function); |
| 2271 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2272 | // 0. Prepare for tail call if necessary. |
| 2273 | if (tail_call_mode == TailCallMode::kAllow) { |
| 2274 | PrepareForTailCall(masm, r0, r3, r4, r5); |
| 2275 | } |
| 2276 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2277 | // 1. Runtime fallback for Proxy [[Call]]. |
| 2278 | __ Push(r1); |
| 2279 | // Increase the arguments size to include the pushed function and the |
| 2280 | // existing receiver on the stack. |
| 2281 | __ add(r0, r0, Operand(2)); |
| 2282 | // Tail-call to the runtime. |
| 2283 | __ JumpToExternalReference( |
| 2284 | ExternalReference(Runtime::kJSProxyCall, masm->isolate())); |
| 2285 | |
| 2286 | // 2. Call to something else, which might have a [[Call]] internal method (if |
| 2287 | // not we raise an exception). |
| 2288 | __ bind(&non_function); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2289 | // Overwrite the original receiver the (original) target. |
| 2290 | __ str(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
| 2291 | // Let the "call_as_function_delegate" take care of the rest. |
| 2292 | __ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, r1); |
| 2293 | __ Jump(masm->isolate()->builtins()->CallFunction( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2294 | ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2295 | RelocInfo::CODE_TARGET); |
| 2296 | |
| 2297 | // 3. Call to something that is not callable. |
| 2298 | __ bind(&non_callable); |
| 2299 | { |
| 2300 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 2301 | __ Push(r1); |
| 2302 | __ CallRuntime(Runtime::kThrowCalledNonCallable); |
| 2303 | } |
| 2304 | } |
| 2305 | |
| 2306 | |
| 2307 | // static |
| 2308 | void Builtins::Generate_ConstructFunction(MacroAssembler* masm) { |
| 2309 | // ----------- S t a t e ------------- |
| 2310 | // -- r0 : the number of arguments (not including the receiver) |
| 2311 | // -- r1 : the constructor to call (checked to be a JSFunction) |
| 2312 | // -- r3 : the new target (checked to be a constructor) |
| 2313 | // ----------------------------------- |
| 2314 | __ AssertFunction(r1); |
| 2315 | |
| 2316 | // Calling convention for function specific ConstructStubs require |
| 2317 | // r2 to contain either an AllocationSite or undefined. |
| 2318 | __ LoadRoot(r2, Heap::kUndefinedValueRootIndex); |
| 2319 | |
| 2320 | // Tail call to the function-specific construct stub (still in the caller |
| 2321 | // context at this point). |
| 2322 | __ ldr(r4, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
| 2323 | __ ldr(r4, FieldMemOperand(r4, SharedFunctionInfo::kConstructStubOffset)); |
| 2324 | __ add(pc, r4, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2325 | } |
| 2326 | |
| 2327 | |
| 2328 | // static |
| 2329 | void Builtins::Generate_ConstructBoundFunction(MacroAssembler* masm) { |
| 2330 | // ----------- S t a t e ------------- |
| 2331 | // -- r0 : the number of arguments (not including the receiver) |
| 2332 | // -- r1 : the function to call (checked to be a JSBoundFunction) |
| 2333 | // -- r3 : the new target (checked to be a constructor) |
| 2334 | // ----------------------------------- |
| 2335 | __ AssertBoundFunction(r1); |
| 2336 | |
| 2337 | // Push the [[BoundArguments]] onto the stack. |
| 2338 | Generate_PushBoundArguments(masm); |
| 2339 | |
| 2340 | // Patch new.target to [[BoundTargetFunction]] if new.target equals target. |
| 2341 | __ cmp(r1, r3); |
| 2342 | __ ldr(r3, FieldMemOperand(r1, JSBoundFunction::kBoundTargetFunctionOffset), |
| 2343 | eq); |
| 2344 | |
| 2345 | // Construct the [[BoundTargetFunction]] via the Construct builtin. |
| 2346 | __ ldr(r1, FieldMemOperand(r1, JSBoundFunction::kBoundTargetFunctionOffset)); |
| 2347 | __ mov(ip, Operand(ExternalReference(Builtins::kConstruct, masm->isolate()))); |
| 2348 | __ ldr(ip, MemOperand(ip)); |
| 2349 | __ add(pc, ip, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2350 | } |
| 2351 | |
| 2352 | |
| 2353 | // static |
| 2354 | void Builtins::Generate_ConstructProxy(MacroAssembler* masm) { |
| 2355 | // ----------- S t a t e ------------- |
| 2356 | // -- r0 : the number of arguments (not including the receiver) |
| 2357 | // -- r1 : the constructor to call (checked to be a JSProxy) |
| 2358 | // -- r3 : the new target (either the same as the constructor or |
| 2359 | // the JSFunction on which new was invoked initially) |
| 2360 | // ----------------------------------- |
| 2361 | |
| 2362 | // Call into the Runtime for Proxy [[Construct]]. |
| 2363 | __ Push(r1); |
| 2364 | __ Push(r3); |
| 2365 | // Include the pushed new_target, constructor and the receiver. |
| 2366 | __ add(r0, r0, Operand(3)); |
| 2367 | // Tail-call to the runtime. |
| 2368 | __ JumpToExternalReference( |
| 2369 | ExternalReference(Runtime::kJSProxyConstruct, masm->isolate())); |
| 2370 | } |
| 2371 | |
| 2372 | |
| 2373 | // static |
| 2374 | void Builtins::Generate_Construct(MacroAssembler* masm) { |
| 2375 | // ----------- S t a t e ------------- |
| 2376 | // -- r0 : the number of arguments (not including the receiver) |
| 2377 | // -- r1 : the constructor to call (can be any Object) |
| 2378 | // -- r3 : the new target (either the same as the constructor or |
| 2379 | // the JSFunction on which new was invoked initially) |
| 2380 | // ----------------------------------- |
| 2381 | |
| 2382 | // Check if target is a Smi. |
| 2383 | Label non_constructor; |
| 2384 | __ JumpIfSmi(r1, &non_constructor); |
| 2385 | |
| 2386 | // Dispatch based on instance type. |
| 2387 | __ CompareObjectType(r1, r4, r5, JS_FUNCTION_TYPE); |
| 2388 | __ Jump(masm->isolate()->builtins()->ConstructFunction(), |
| 2389 | RelocInfo::CODE_TARGET, eq); |
| 2390 | |
| 2391 | // Check if target has a [[Construct]] internal method. |
| 2392 | __ ldrb(r2, FieldMemOperand(r4, Map::kBitFieldOffset)); |
| 2393 | __ tst(r2, Operand(1 << Map::kIsConstructor)); |
| 2394 | __ b(eq, &non_constructor); |
| 2395 | |
| 2396 | // Only dispatch to bound functions after checking whether they are |
| 2397 | // constructors. |
| 2398 | __ cmp(r5, Operand(JS_BOUND_FUNCTION_TYPE)); |
| 2399 | __ Jump(masm->isolate()->builtins()->ConstructBoundFunction(), |
| 2400 | RelocInfo::CODE_TARGET, eq); |
| 2401 | |
| 2402 | // Only dispatch to proxies after checking whether they are constructors. |
| 2403 | __ cmp(r5, Operand(JS_PROXY_TYPE)); |
| 2404 | __ Jump(masm->isolate()->builtins()->ConstructProxy(), RelocInfo::CODE_TARGET, |
| 2405 | eq); |
| 2406 | |
| 2407 | // Called Construct on an exotic Object with a [[Construct]] internal method. |
| 2408 | { |
| 2409 | // Overwrite the original receiver with the (original) target. |
| 2410 | __ str(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
| 2411 | // Let the "call_as_constructor_delegate" take care of the rest. |
| 2412 | __ LoadNativeContextSlot(Context::CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, r1); |
| 2413 | __ Jump(masm->isolate()->builtins()->CallFunction(), |
| 2414 | RelocInfo::CODE_TARGET); |
| 2415 | } |
| 2416 | |
| 2417 | // Called Construct on an Object that doesn't have a [[Construct]] internal |
| 2418 | // method. |
| 2419 | __ bind(&non_constructor); |
| 2420 | __ Jump(masm->isolate()->builtins()->ConstructedNonConstructable(), |
| 2421 | RelocInfo::CODE_TARGET); |
| 2422 | } |
| 2423 | |
| 2424 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2425 | void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
| 2426 | // ----------- S t a t e ------------- |
| 2427 | // -- r0 : actual number of arguments |
| 2428 | // -- r1 : function (passed through to callee) |
| 2429 | // -- r2 : expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2430 | // -- r3 : new target (passed through to callee) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2431 | // ----------------------------------- |
| 2432 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2433 | Label invoke, dont_adapt_arguments, stack_overflow; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2434 | |
| 2435 | Label enough, too_few; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 2436 | __ cmp(r0, r2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2437 | __ b(lt, &too_few); |
| 2438 | __ cmp(r2, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel)); |
| 2439 | __ b(eq, &dont_adapt_arguments); |
| 2440 | |
| 2441 | { // Enough parameters: actual >= expected |
| 2442 | __ bind(&enough); |
| 2443 | EnterArgumentsAdaptorFrame(masm); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2444 | ArgumentAdaptorStackCheck(masm, &stack_overflow); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2445 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2446 | // Calculate copy start address into r0 and copy end address into r4. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2447 | // r0: actual number of arguments as a smi |
| 2448 | // r1: function |
| 2449 | // r2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2450 | // r3: new target (passed through to callee) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2451 | __ add(r0, fp, Operand::PointerOffsetFromSmiKey(r0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2452 | // adjust for return address and receiver |
| 2453 | __ add(r0, r0, Operand(2 * kPointerSize)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2454 | __ sub(r4, r0, Operand(r2, LSL, kPointerSizeLog2)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2455 | |
| 2456 | // Copy the arguments (including the receiver) to the new stack frame. |
| 2457 | // r0: copy start address |
| 2458 | // r1: function |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2459 | // r2: expected number of arguments |
| 2460 | // r3: new target (passed through to callee) |
| 2461 | // r4: copy end address |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2462 | |
| 2463 | Label copy; |
| 2464 | __ bind(©); |
| 2465 | __ ldr(ip, MemOperand(r0, 0)); |
| 2466 | __ push(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2467 | __ cmp(r0, r4); // Compare before moving to next argument. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2468 | __ sub(r0, r0, Operand(kPointerSize)); |
| 2469 | __ b(ne, ©); |
| 2470 | |
| 2471 | __ b(&invoke); |
| 2472 | } |
| 2473 | |
| 2474 | { // Too few parameters: Actual < expected |
| 2475 | __ bind(&too_few); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2476 | |
| 2477 | // If the function is strong we need to throw an error. |
| 2478 | Label no_strong_error; |
| 2479 | __ ldr(r4, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
| 2480 | __ ldr(r5, FieldMemOperand(r4, SharedFunctionInfo::kCompilerHintsOffset)); |
| 2481 | __ tst(r5, Operand(1 << (SharedFunctionInfo::kStrongModeFunction + |
| 2482 | kSmiTagSize))); |
| 2483 | __ b(eq, &no_strong_error); |
| 2484 | |
| 2485 | // What we really care about is the required number of arguments. |
| 2486 | __ ldr(r4, FieldMemOperand(r4, SharedFunctionInfo::kLengthOffset)); |
| 2487 | __ cmp(r0, Operand::SmiUntag(r4)); |
| 2488 | __ b(ge, &no_strong_error); |
| 2489 | |
| 2490 | { |
| 2491 | FrameScope frame(masm, StackFrame::MANUAL); |
| 2492 | EnterArgumentsAdaptorFrame(masm); |
| 2493 | __ CallRuntime(Runtime::kThrowStrongModeTooFewArguments); |
| 2494 | } |
| 2495 | |
| 2496 | __ bind(&no_strong_error); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2497 | EnterArgumentsAdaptorFrame(masm); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2498 | ArgumentAdaptorStackCheck(masm, &stack_overflow); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2499 | |
| 2500 | // Calculate copy start address into r0 and copy end address is fp. |
| 2501 | // r0: actual number of arguments as a smi |
| 2502 | // r1: function |
| 2503 | // r2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2504 | // r3: new target (passed through to callee) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2505 | __ add(r0, fp, Operand::PointerOffsetFromSmiKey(r0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2506 | |
| 2507 | // Copy the arguments (including the receiver) to the new stack frame. |
| 2508 | // r0: copy start address |
| 2509 | // r1: function |
| 2510 | // r2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2511 | // r3: new target (passed through to callee) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2512 | Label copy; |
| 2513 | __ bind(©); |
| 2514 | // Adjust load for return address and receiver. |
| 2515 | __ ldr(ip, MemOperand(r0, 2 * kPointerSize)); |
| 2516 | __ push(ip); |
| 2517 | __ cmp(r0, fp); // Compare before moving to next argument. |
| 2518 | __ sub(r0, r0, Operand(kPointerSize)); |
| 2519 | __ b(ne, ©); |
| 2520 | |
| 2521 | // Fill the remaining expected arguments with undefined. |
| 2522 | // r1: function |
| 2523 | // r2: expected number of arguments |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2524 | // r3: new target (passed through to callee) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2525 | __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2526 | __ sub(r4, fp, Operand(r2, LSL, kPointerSizeLog2)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2527 | // Adjust for frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2528 | __ sub(r4, r4, Operand(StandardFrameConstants::kFixedFrameSizeFromFp + |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2529 | 2 * kPointerSize)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2530 | |
| 2531 | Label fill; |
| 2532 | __ bind(&fill); |
| 2533 | __ push(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2534 | __ cmp(sp, r4); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2535 | __ b(ne, &fill); |
| 2536 | } |
| 2537 | |
| 2538 | // Call the entry point. |
| 2539 | __ bind(&invoke); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2540 | __ mov(r0, r2); |
| 2541 | // r0 : expected number of arguments |
| 2542 | // r1 : function (passed through to callee) |
| 2543 | // r3 : new target (passed through to callee) |
| 2544 | __ ldr(r4, FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); |
| 2545 | __ Call(r4); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2546 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2547 | // Store offset of return address for deoptimizer. |
| 2548 | masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset()); |
| 2549 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2550 | // Exit frame and return. |
| 2551 | LeaveArgumentsAdaptorFrame(masm); |
| 2552 | __ Jump(lr); |
| 2553 | |
| 2554 | |
| 2555 | // ------------------------------------------- |
| 2556 | // Dont adapt arguments. |
| 2557 | // ------------------------------------------- |
| 2558 | __ bind(&dont_adapt_arguments); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2559 | __ ldr(r4, FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); |
| 2560 | __ Jump(r4); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2561 | |
| 2562 | __ bind(&stack_overflow); |
| 2563 | { |
| 2564 | FrameScope frame(masm, StackFrame::MANUAL); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2565 | __ CallRuntime(Runtime::kThrowStackOverflow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2566 | __ bkpt(0); |
| 2567 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 2568 | } |
| 2569 | |
| 2570 | |
| 2571 | #undef __ |
| 2572 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2573 | } // namespace internal |
| 2574 | } // namespace v8 |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 2575 | |
| 2576 | #endif // V8_TARGET_ARCH_ARM |