ager@chromium.org | 5ec4892 | 2009-05-05 07:25:34 +0000 | [diff] [blame] | 1 | // Copyright 2009 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 28 | #include "v8.h" |
| 29 | #include "codegen-inl.h" |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 30 | #include "macro-assembler.h" |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 31 | |
| 32 | namespace v8 { |
| 33 | namespace internal { |
| 34 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 35 | #define __ ACCESS_MASM(masm) |
| 36 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 37 | void Builtins::Generate_Adaptor(MacroAssembler* masm, CFunctionId id) { |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 38 | // TODO(428): Don't pass the function in a static variable. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 39 | ExternalReference passed = ExternalReference::builtin_passed_function(); |
| 40 | __ movq(kScratchRegister, passed.address(), RelocInfo::EXTERNAL_REFERENCE); |
| 41 | __ movq(Operand(kScratchRegister, 0), rdi); |
| 42 | |
| 43 | // The actual argument count has already been loaded into register |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 44 | // rax, but JumpToRuntime expects rax to contain the number of |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 45 | // arguments including the receiver. |
| 46 | __ incq(rax); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 47 | __ JumpToRuntime(ExternalReference(id), 1); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 48 | } |
| 49 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 50 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 51 | static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 52 | __ push(rbp); |
| 53 | __ movq(rbp, rsp); |
| 54 | |
| 55 | // Store the arguments adaptor context sentinel. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 56 | __ Push(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 57 | |
| 58 | // Push the function on the stack. |
| 59 | __ push(rdi); |
| 60 | |
| 61 | // Preserve the number of arguments on the stack. Must preserve both |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 62 | // rax and rbx because these registers are used when copying the |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 63 | // arguments and the receiver. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 64 | __ Integer32ToSmi(rcx, rax); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 65 | __ push(rcx); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 66 | } |
| 67 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 68 | |
| 69 | static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 70 | // Retrieve the number of arguments from the stack. Number is a Smi. |
| 71 | __ movq(rbx, Operand(rbp, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 72 | |
| 73 | // Leave the frame. |
| 74 | __ movq(rsp, rbp); |
| 75 | __ pop(rbp); |
| 76 | |
| 77 | // Remove caller arguments from the stack. |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 78 | __ pop(rcx); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 79 | SmiIndex index = masm->SmiToIndex(rbx, rbx, kPointerSizeLog2); |
| 80 | __ lea(rsp, Operand(rsp, index.reg, index.scale, 1 * kPointerSize)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 81 | __ push(rcx); |
| 82 | } |
| 83 | |
| 84 | |
| 85 | void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
| 86 | // ----------- S t a t e ------------- |
| 87 | // -- rax : actual number of arguments |
| 88 | // -- rbx : expected number of arguments |
| 89 | // -- rdx : code entry to call |
| 90 | // ----------------------------------- |
| 91 | |
| 92 | Label invoke, dont_adapt_arguments; |
| 93 | __ IncrementCounter(&Counters::arguments_adaptors, 1); |
| 94 | |
| 95 | Label enough, too_few; |
| 96 | __ cmpq(rax, rbx); |
| 97 | __ j(less, &too_few); |
| 98 | __ cmpq(rbx, Immediate(SharedFunctionInfo::kDontAdaptArgumentsSentinel)); |
| 99 | __ j(equal, &dont_adapt_arguments); |
| 100 | |
| 101 | { // Enough parameters: Actual >= expected. |
| 102 | __ bind(&enough); |
| 103 | EnterArgumentsAdaptorFrame(masm); |
| 104 | |
| 105 | // Copy receiver and all expected arguments. |
| 106 | const int offset = StandardFrameConstants::kCallerSPOffset; |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 107 | __ lea(rax, Operand(rbp, rax, times_pointer_size, offset)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 108 | __ movq(rcx, Immediate(-1)); // account for receiver |
| 109 | |
| 110 | Label copy; |
| 111 | __ bind(©); |
| 112 | __ incq(rcx); |
| 113 | __ push(Operand(rax, 0)); |
| 114 | __ subq(rax, Immediate(kPointerSize)); |
| 115 | __ cmpq(rcx, rbx); |
| 116 | __ j(less, ©); |
| 117 | __ jmp(&invoke); |
| 118 | } |
| 119 | |
| 120 | { // Too few parameters: Actual < expected. |
| 121 | __ bind(&too_few); |
| 122 | EnterArgumentsAdaptorFrame(masm); |
| 123 | |
| 124 | // Copy receiver and all actual arguments. |
| 125 | const int offset = StandardFrameConstants::kCallerSPOffset; |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 126 | __ lea(rdi, Operand(rbp, rax, times_pointer_size, offset)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 127 | __ movq(rcx, Immediate(-1)); // account for receiver |
| 128 | |
| 129 | Label copy; |
| 130 | __ bind(©); |
| 131 | __ incq(rcx); |
| 132 | __ push(Operand(rdi, 0)); |
| 133 | __ subq(rdi, Immediate(kPointerSize)); |
| 134 | __ cmpq(rcx, rax); |
| 135 | __ j(less, ©); |
| 136 | |
| 137 | // Fill remaining expected arguments with undefined values. |
| 138 | Label fill; |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 139 | __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 140 | __ bind(&fill); |
| 141 | __ incq(rcx); |
| 142 | __ push(kScratchRegister); |
| 143 | __ cmpq(rcx, rbx); |
| 144 | __ j(less, &fill); |
| 145 | |
| 146 | // Restore function pointer. |
| 147 | __ movq(rdi, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); |
| 148 | } |
| 149 | |
| 150 | // Call the entry point. |
| 151 | __ bind(&invoke); |
| 152 | __ call(rdx); |
| 153 | |
| 154 | // Leave frame and return. |
| 155 | LeaveArgumentsAdaptorFrame(masm); |
| 156 | __ ret(0); |
| 157 | |
| 158 | // ------------------------------------------- |
| 159 | // Dont adapt arguments. |
| 160 | // ------------------------------------------- |
| 161 | __ bind(&dont_adapt_arguments); |
| 162 | __ jmp(rdx); |
| 163 | } |
| 164 | |
| 165 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 166 | void Builtins::Generate_FunctionCall(MacroAssembler* masm) { |
| 167 | // Stack Layout: |
| 168 | // rsp: return address |
| 169 | // +1: Argument n |
| 170 | // +2: Argument n-1 |
| 171 | // ... |
| 172 | // +n: Argument 1 = receiver |
| 173 | // +n+1: Argument 0 = function to call |
| 174 | // |
| 175 | // rax contains the number of arguments, n, not counting the function. |
| 176 | // |
| 177 | // 1. Make sure we have at least one argument. |
| 178 | { Label done; |
| 179 | __ testq(rax, rax); |
| 180 | __ j(not_zero, &done); |
| 181 | __ pop(rbx); |
| 182 | __ Push(Factory::undefined_value()); |
| 183 | __ push(rbx); |
| 184 | __ incq(rax); |
| 185 | __ bind(&done); |
| 186 | } |
| 187 | |
| 188 | // 2. Get the function to call from the stack. |
| 189 | { Label done, non_function, function; |
| 190 | // The function to call is at position n+1 on the stack. |
| 191 | __ movq(rdi, Operand(rsp, rax, times_pointer_size, +1 * kPointerSize)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 192 | __ JumpIfSmi(rdi, &non_function); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 193 | __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); |
| 194 | __ j(equal, &function); |
| 195 | |
| 196 | // Non-function called: Clear the function to force exception. |
| 197 | __ bind(&non_function); |
| 198 | __ xor_(rdi, rdi); |
| 199 | __ jmp(&done); |
| 200 | |
| 201 | // Function called: Change context eagerly to get the right global object. |
| 202 | __ bind(&function); |
| 203 | __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 204 | |
| 205 | __ bind(&done); |
| 206 | } |
| 207 | |
| 208 | // 3. Make sure first argument is an object; convert if necessary. |
| 209 | { Label call_to_object, use_global_receiver, patch_receiver, done; |
| 210 | __ movq(rbx, Operand(rsp, rax, times_pointer_size, 0)); |
| 211 | |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 212 | __ JumpIfSmi(rbx, &call_to_object); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 213 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 214 | __ CompareRoot(rbx, Heap::kNullValueRootIndex); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 215 | __ j(equal, &use_global_receiver); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 216 | __ CompareRoot(rbx, Heap::kUndefinedValueRootIndex); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 217 | __ j(equal, &use_global_receiver); |
| 218 | |
| 219 | __ CmpObjectType(rbx, FIRST_JS_OBJECT_TYPE, rcx); |
| 220 | __ j(below, &call_to_object); |
| 221 | __ CmpInstanceType(rcx, LAST_JS_OBJECT_TYPE); |
| 222 | __ j(below_equal, &done); |
| 223 | |
| 224 | __ bind(&call_to_object); |
| 225 | __ EnterInternalFrame(); // preserves rax, rbx, rdi |
| 226 | |
| 227 | // Store the arguments count on the stack (smi tagged). |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 228 | __ Integer32ToSmi(rax, rax); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 229 | __ push(rax); |
| 230 | |
| 231 | __ push(rdi); // save edi across the call |
| 232 | __ push(rbx); |
| 233 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 234 | __ movq(rbx, rax); |
| 235 | __ pop(rdi); // restore edi after the call |
| 236 | |
| 237 | // Get the arguments count and untag it. |
| 238 | __ pop(rax); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 239 | __ SmiToInteger32(rax, rax); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 240 | |
| 241 | __ LeaveInternalFrame(); |
| 242 | __ jmp(&patch_receiver); |
| 243 | |
| 244 | // Use the global receiver object from the called function as the receiver. |
| 245 | __ bind(&use_global_receiver); |
| 246 | const int kGlobalIndex = |
| 247 | Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 248 | __ movq(rbx, FieldOperand(rsi, kGlobalIndex)); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 249 | __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalContextOffset)); |
| 250 | __ movq(rbx, FieldOperand(rbx, kGlobalIndex)); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 251 | __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset)); |
| 252 | |
| 253 | __ bind(&patch_receiver); |
| 254 | __ movq(Operand(rsp, rax, times_pointer_size, 0), rbx); |
| 255 | |
| 256 | __ bind(&done); |
| 257 | } |
| 258 | |
| 259 | // 4. Shift stuff one slot down the stack. |
| 260 | { Label loop; |
| 261 | __ lea(rcx, Operand(rax, +1)); // +1 ~ copy receiver too |
| 262 | __ bind(&loop); |
| 263 | __ movq(rbx, Operand(rsp, rcx, times_pointer_size, 0)); |
| 264 | __ movq(Operand(rsp, rcx, times_pointer_size, 1 * kPointerSize), rbx); |
| 265 | __ decq(rcx); |
| 266 | __ j(not_zero, &loop); |
| 267 | } |
| 268 | |
| 269 | // 5. Remove TOS (copy of last arguments), but keep return address. |
| 270 | __ pop(rbx); |
| 271 | __ pop(rcx); |
| 272 | __ push(rbx); |
| 273 | __ decq(rax); |
| 274 | |
| 275 | // 6. Check that function really was a function and get the code to |
| 276 | // call from the function and check that the number of expected |
| 277 | // arguments matches what we're providing. |
| 278 | { Label invoke, trampoline; |
| 279 | __ testq(rdi, rdi); |
| 280 | __ j(not_zero, &invoke); |
| 281 | __ xor_(rbx, rbx); |
| 282 | __ GetBuiltinEntry(rdx, Builtins::CALL_NON_FUNCTION); |
| 283 | __ bind(&trampoline); |
| 284 | __ Jump(Handle<Code>(builtin(ArgumentsAdaptorTrampoline)), |
| 285 | RelocInfo::CODE_TARGET); |
| 286 | |
| 287 | __ bind(&invoke); |
| 288 | __ movq(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 289 | __ movsxlq(rbx, |
| 290 | FieldOperand(rdx, SharedFunctionInfo::kFormalParameterCountOffset)); |
| 291 | __ movq(rdx, FieldOperand(rdx, SharedFunctionInfo::kCodeOffset)); |
| 292 | __ lea(rdx, FieldOperand(rdx, Code::kHeaderSize)); |
| 293 | __ cmpq(rax, rbx); |
| 294 | __ j(not_equal, &trampoline); |
| 295 | } |
| 296 | |
| 297 | // 7. Jump (tail-call) to the code in register edx without checking arguments. |
| 298 | ParameterCount expected(0); |
| 299 | __ InvokeCode(rdx, expected, expected, JUMP_FUNCTION); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 300 | } |
| 301 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 302 | |
| 303 | void Builtins::Generate_FunctionApply(MacroAssembler* masm) { |
| 304 | // Stack at entry: |
| 305 | // rsp: return address |
| 306 | // rsp+8: arguments |
| 307 | // rsp+16: receiver ("this") |
| 308 | // rsp+24: function |
| 309 | __ EnterInternalFrame(); |
| 310 | // Stack frame: |
| 311 | // rbp: Old base pointer |
| 312 | // rbp[1]: return address |
| 313 | // rbp[2]: function arguments |
| 314 | // rbp[3]: receiver |
| 315 | // rbp[4]: function |
| 316 | static const int kArgumentsOffset = 2 * kPointerSize; |
| 317 | static const int kReceiverOffset = 3 * kPointerSize; |
| 318 | static const int kFunctionOffset = 4 * kPointerSize; |
| 319 | __ push(Operand(rbp, kFunctionOffset)); |
| 320 | __ push(Operand(rbp, kArgumentsOffset)); |
| 321 | __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION); |
| 322 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 323 | // Check the stack for overflow. We are not trying need to catch |
| 324 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 325 | // limit" is checked. |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 326 | Label okay; |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 327 | __ LoadRoot(kScratchRegister, Heap::kRealStackLimitRootIndex); |
| 328 | __ movq(rcx, rsp); |
| 329 | // Make rcx the space we have left. The stack might already be overflowed |
| 330 | // here which will cause rcx to become negative. |
| 331 | __ subq(rcx, kScratchRegister); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 332 | // Make rdx the space we need for the array when it is unrolled onto the |
| 333 | // stack. |
| 334 | __ PositiveSmiTimesPowerOfTwoToInteger64(rdx, rax, kPointerSizeLog2); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 335 | // Check if the arguments will overflow the stack. |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 336 | __ cmpq(rcx, rdx); |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 337 | __ j(greater, &okay); // Signed comparison. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 338 | |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 339 | // Out of stack space. |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 340 | __ push(Operand(rbp, kFunctionOffset)); |
| 341 | __ push(rax); |
| 342 | __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_FUNCTION); |
| 343 | __ bind(&okay); |
| 344 | // End of stack check. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 345 | |
| 346 | // Push current index and limit. |
| 347 | const int kLimitOffset = |
| 348 | StandardFrameConstants::kExpressionsOffset - 1 * kPointerSize; |
| 349 | const int kIndexOffset = kLimitOffset - 1 * kPointerSize; |
| 350 | __ push(rax); // limit |
| 351 | __ push(Immediate(0)); // index |
| 352 | |
| 353 | // Change context eagerly to get the right global object if |
| 354 | // necessary. |
| 355 | __ movq(rdi, Operand(rbp, kFunctionOffset)); |
| 356 | __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 357 | |
| 358 | // Compute the receiver. |
| 359 | Label call_to_object, use_global_receiver, push_receiver; |
| 360 | __ movq(rbx, Operand(rbp, kReceiverOffset)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 361 | __ JumpIfSmi(rbx, &call_to_object); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 362 | __ CompareRoot(rbx, Heap::kNullValueRootIndex); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 363 | __ j(equal, &use_global_receiver); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 364 | __ CompareRoot(rbx, Heap::kUndefinedValueRootIndex); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 365 | __ j(equal, &use_global_receiver); |
| 366 | |
| 367 | // If given receiver is already a JavaScript object then there's no |
| 368 | // reason for converting it. |
| 369 | __ CmpObjectType(rbx, FIRST_JS_OBJECT_TYPE, rcx); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 370 | __ j(below, &call_to_object); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 371 | __ CmpInstanceType(rcx, LAST_JS_OBJECT_TYPE); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 372 | __ j(below_equal, &push_receiver); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 373 | |
| 374 | // Convert the receiver to an object. |
| 375 | __ bind(&call_to_object); |
| 376 | __ push(rbx); |
| 377 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 378 | __ movq(rbx, rax); |
| 379 | __ jmp(&push_receiver); |
| 380 | |
| 381 | // Use the current global receiver object as the receiver. |
| 382 | __ bind(&use_global_receiver); |
| 383 | const int kGlobalOffset = |
| 384 | Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 385 | __ movq(rbx, FieldOperand(rsi, kGlobalOffset)); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 386 | __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalContextOffset)); |
| 387 | __ movq(rbx, FieldOperand(rbx, kGlobalOffset)); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 388 | __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset)); |
| 389 | |
| 390 | // Push the receiver. |
| 391 | __ bind(&push_receiver); |
| 392 | __ push(rbx); |
| 393 | |
| 394 | // Copy all arguments from the array to the stack. |
| 395 | Label entry, loop; |
| 396 | __ movq(rax, Operand(rbp, kIndexOffset)); |
| 397 | __ jmp(&entry); |
| 398 | __ bind(&loop); |
| 399 | __ movq(rcx, Operand(rbp, kArgumentsOffset)); // load arguments |
| 400 | __ push(rcx); |
| 401 | __ push(rax); |
| 402 | |
| 403 | // Use inline caching to speed up access to arguments. |
| 404 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); |
| 405 | __ Call(ic, RelocInfo::CODE_TARGET); |
| 406 | // It is important that we do not have a test instruction after the |
| 407 | // call. A test instruction after the call is used to indicate that |
| 408 | // we have generated an inline version of the keyed load. In this |
| 409 | // case, we know that we are not generating a test instruction next. |
| 410 | |
| 411 | // Remove IC arguments from the stack and push the nth argument. |
| 412 | __ addq(rsp, Immediate(2 * kPointerSize)); |
| 413 | __ push(rax); |
| 414 | |
| 415 | // Update the index on the stack and in register rax. |
| 416 | __ movq(rax, Operand(rbp, kIndexOffset)); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 417 | __ SmiAddConstant(rax, rax, Smi::FromInt(1)); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 418 | __ movq(Operand(rbp, kIndexOffset), rax); |
| 419 | |
| 420 | __ bind(&entry); |
| 421 | __ cmpq(rax, Operand(rbp, kLimitOffset)); |
| 422 | __ j(not_equal, &loop); |
| 423 | |
| 424 | // Invoke the function. |
| 425 | ParameterCount actual(rax); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 426 | __ SmiToInteger32(rax, rax); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 427 | __ movq(rdi, Operand(rbp, kFunctionOffset)); |
| 428 | __ InvokeFunction(rdi, actual, CALL_FUNCTION); |
| 429 | |
| 430 | __ LeaveInternalFrame(); |
| 431 | __ ret(3 * kPointerSize); // remove function, receiver, and arguments |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 432 | } |
| 433 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 434 | |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 435 | // Load the built-in Array function from the current context. |
| 436 | static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) { |
| 437 | // Load the global context. |
| 438 | __ movq(result, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 439 | __ movq(result, FieldOperand(result, GlobalObject::kGlobalContextOffset)); |
| 440 | // Load the Array function from the global context. |
| 441 | __ movq(result, |
| 442 | Operand(result, Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX))); |
| 443 | } |
| 444 | |
| 445 | |
| 446 | // Number of empty elements to allocate for an empty array. |
| 447 | static const int kPreallocatedArrayElements = 4; |
| 448 | |
| 449 | |
| 450 | // Allocate an empty JSArray. The allocated array is put into the result |
| 451 | // register. If the parameter initial_capacity is larger than zero an elements |
| 452 | // backing store is allocated with this size and filled with the hole values. |
| 453 | // Otherwise the elements backing store is set to the empty FixedArray. |
| 454 | static void AllocateEmptyJSArray(MacroAssembler* masm, |
| 455 | Register array_function, |
| 456 | Register result, |
| 457 | Register scratch1, |
| 458 | Register scratch2, |
| 459 | Register scratch3, |
| 460 | int initial_capacity, |
| 461 | Label* gc_required) { |
| 462 | ASSERT(initial_capacity >= 0); |
| 463 | |
| 464 | // Load the initial map from the array function. |
| 465 | __ movq(scratch1, FieldOperand(array_function, |
| 466 | JSFunction::kPrototypeOrInitialMapOffset)); |
| 467 | |
| 468 | // Allocate the JSArray object together with space for a fixed array with the |
| 469 | // requested elements. |
| 470 | int size = JSArray::kSize; |
| 471 | if (initial_capacity > 0) { |
| 472 | size += FixedArray::SizeFor(initial_capacity); |
| 473 | } |
| 474 | __ AllocateInNewSpace(size, |
| 475 | result, |
| 476 | scratch2, |
| 477 | scratch3, |
| 478 | gc_required, |
| 479 | TAG_OBJECT); |
| 480 | |
| 481 | // Allocated the JSArray. Now initialize the fields except for the elements |
| 482 | // array. |
| 483 | // result: JSObject |
| 484 | // scratch1: initial map |
| 485 | // scratch2: start of next object |
| 486 | __ movq(FieldOperand(result, JSObject::kMapOffset), scratch1); |
| 487 | __ Move(FieldOperand(result, JSArray::kPropertiesOffset), |
| 488 | Factory::empty_fixed_array()); |
| 489 | // Field JSArray::kElementsOffset is initialized later. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 490 | __ Move(FieldOperand(result, JSArray::kLengthOffset), Smi::FromInt(0)); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 491 | |
| 492 | // If no storage is requested for the elements array just set the empty |
| 493 | // fixed array. |
| 494 | if (initial_capacity == 0) { |
| 495 | __ Move(FieldOperand(result, JSArray::kElementsOffset), |
| 496 | Factory::empty_fixed_array()); |
| 497 | return; |
| 498 | } |
| 499 | |
| 500 | // Calculate the location of the elements array and set elements array member |
| 501 | // of the JSArray. |
| 502 | // result: JSObject |
| 503 | // scratch2: start of next object |
| 504 | __ lea(scratch1, Operand(result, JSArray::kSize)); |
| 505 | __ movq(FieldOperand(result, JSArray::kElementsOffset), scratch1); |
| 506 | |
| 507 | // Initialize the FixedArray and fill it with holes. FixedArray length is not |
| 508 | // stored as a smi. |
| 509 | // result: JSObject |
| 510 | // scratch1: elements array |
| 511 | // scratch2: start of next object |
| 512 | __ Move(FieldOperand(scratch1, JSObject::kMapOffset), |
| 513 | Factory::fixed_array_map()); |
| 514 | __ movq(FieldOperand(scratch1, Array::kLengthOffset), |
| 515 | Immediate(initial_capacity)); |
| 516 | |
| 517 | // Fill the FixedArray with the hole value. Inline the code if short. |
| 518 | // Reconsider loop unfolding if kPreallocatedArrayElements gets changed. |
| 519 | static const int kLoopUnfoldLimit = 4; |
| 520 | ASSERT(kPreallocatedArrayElements <= kLoopUnfoldLimit); |
| 521 | __ Move(scratch3, Factory::the_hole_value()); |
| 522 | if (initial_capacity <= kLoopUnfoldLimit) { |
| 523 | // Use a scratch register here to have only one reloc info when unfolding |
| 524 | // the loop. |
| 525 | for (int i = 0; i < initial_capacity; i++) { |
| 526 | __ movq(FieldOperand(scratch1, |
| 527 | FixedArray::kHeaderSize + i * kPointerSize), |
| 528 | scratch3); |
| 529 | } |
| 530 | } else { |
| 531 | Label loop, entry; |
| 532 | __ jmp(&entry); |
| 533 | __ bind(&loop); |
| 534 | __ movq(Operand(scratch1, 0), scratch3); |
| 535 | __ addq(scratch1, Immediate(kPointerSize)); |
| 536 | __ bind(&entry); |
| 537 | __ cmpq(scratch1, scratch2); |
| 538 | __ j(below, &loop); |
| 539 | } |
| 540 | } |
| 541 | |
| 542 | |
| 543 | // Allocate a JSArray with the number of elements stored in a register. The |
| 544 | // register array_function holds the built-in Array function and the register |
| 545 | // array_size holds the size of the array as a smi. The allocated array is put |
| 546 | // into the result register and beginning and end of the FixedArray elements |
| 547 | // storage is put into registers elements_array and elements_array_end (see |
| 548 | // below for when that is not the case). If the parameter fill_with_holes is |
| 549 | // true the allocated elements backing store is filled with the hole values |
| 550 | // otherwise it is left uninitialized. When the backing store is filled the |
| 551 | // register elements_array is scratched. |
| 552 | static void AllocateJSArray(MacroAssembler* masm, |
| 553 | Register array_function, // Array function. |
| 554 | Register array_size, // As a smi. |
| 555 | Register result, |
| 556 | Register elements_array, |
| 557 | Register elements_array_end, |
| 558 | Register scratch, |
| 559 | bool fill_with_hole, |
| 560 | Label* gc_required) { |
| 561 | Label not_empty, allocated; |
| 562 | |
| 563 | // Load the initial map from the array function. |
| 564 | __ movq(elements_array, |
| 565 | FieldOperand(array_function, |
| 566 | JSFunction::kPrototypeOrInitialMapOffset)); |
| 567 | |
| 568 | // Check whether an empty sized array is requested. |
| 569 | __ testq(array_size, array_size); |
| 570 | __ j(not_zero, ¬_empty); |
| 571 | |
| 572 | // If an empty array is requested allocate a small elements array anyway. This |
| 573 | // keeps the code below free of special casing for the empty array. |
| 574 | int size = JSArray::kSize + FixedArray::SizeFor(kPreallocatedArrayElements); |
| 575 | __ AllocateInNewSpace(size, |
| 576 | result, |
| 577 | elements_array_end, |
| 578 | scratch, |
| 579 | gc_required, |
| 580 | TAG_OBJECT); |
| 581 | __ jmp(&allocated); |
| 582 | |
| 583 | // Allocate the JSArray object together with space for a FixedArray with the |
| 584 | // requested elements. |
| 585 | __ bind(¬_empty); |
| 586 | ASSERT(kSmiTagSize == 1 && kSmiTag == 0); |
| 587 | __ AllocateInNewSpace(JSArray::kSize + FixedArray::kHeaderSize, |
| 588 | times_half_pointer_size, // array_size is a smi. |
| 589 | array_size, |
| 590 | result, |
| 591 | elements_array_end, |
| 592 | scratch, |
| 593 | gc_required, |
| 594 | TAG_OBJECT); |
| 595 | |
| 596 | // Allocated the JSArray. Now initialize the fields except for the elements |
| 597 | // array. |
| 598 | // result: JSObject |
| 599 | // elements_array: initial map |
| 600 | // elements_array_end: start of next object |
| 601 | // array_size: size of array (smi) |
| 602 | __ bind(&allocated); |
| 603 | __ movq(FieldOperand(result, JSObject::kMapOffset), elements_array); |
| 604 | __ Move(elements_array, Factory::empty_fixed_array()); |
| 605 | __ movq(FieldOperand(result, JSArray::kPropertiesOffset), elements_array); |
| 606 | // Field JSArray::kElementsOffset is initialized later. |
| 607 | __ movq(FieldOperand(result, JSArray::kLengthOffset), array_size); |
| 608 | |
| 609 | // Calculate the location of the elements array and set elements array member |
| 610 | // of the JSArray. |
| 611 | // result: JSObject |
| 612 | // elements_array_end: start of next object |
| 613 | // array_size: size of array (smi) |
| 614 | __ lea(elements_array, Operand(result, JSArray::kSize)); |
| 615 | __ movq(FieldOperand(result, JSArray::kElementsOffset), elements_array); |
| 616 | |
| 617 | // Initialize the fixed array. FixedArray length is not stored as a smi. |
| 618 | // result: JSObject |
| 619 | // elements_array: elements array |
| 620 | // elements_array_end: start of next object |
| 621 | // array_size: size of array (smi) |
| 622 | ASSERT(kSmiTag == 0); |
| 623 | __ SmiToInteger64(array_size, array_size); |
| 624 | __ Move(FieldOperand(elements_array, JSObject::kMapOffset), |
| 625 | Factory::fixed_array_map()); |
| 626 | Label not_empty_2, fill_array; |
| 627 | __ testq(array_size, array_size); |
| 628 | __ j(not_zero, ¬_empty_2); |
| 629 | // Length of the FixedArray is the number of pre-allocated elements even |
| 630 | // though the actual JSArray has length 0. |
| 631 | __ movq(FieldOperand(elements_array, Array::kLengthOffset), |
| 632 | Immediate(kPreallocatedArrayElements)); |
| 633 | __ jmp(&fill_array); |
| 634 | __ bind(¬_empty_2); |
| 635 | // For non-empty JSArrays the length of the FixedArray and the JSArray is the |
| 636 | // same. |
| 637 | __ movq(FieldOperand(elements_array, Array::kLengthOffset), array_size); |
| 638 | |
| 639 | // Fill the allocated FixedArray with the hole value if requested. |
| 640 | // result: JSObject |
| 641 | // elements_array: elements array |
| 642 | // elements_array_end: start of next object |
| 643 | __ bind(&fill_array); |
| 644 | if (fill_with_hole) { |
| 645 | Label loop, entry; |
| 646 | __ Move(scratch, Factory::the_hole_value()); |
| 647 | __ lea(elements_array, Operand(elements_array, |
| 648 | FixedArray::kHeaderSize - kHeapObjectTag)); |
| 649 | __ jmp(&entry); |
| 650 | __ bind(&loop); |
| 651 | __ movq(Operand(elements_array, 0), scratch); |
| 652 | __ addq(elements_array, Immediate(kPointerSize)); |
| 653 | __ bind(&entry); |
| 654 | __ cmpq(elements_array, elements_array_end); |
| 655 | __ j(below, &loop); |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | |
| 660 | // Create a new array for the built-in Array function. This function allocates |
| 661 | // the JSArray object and the FixedArray elements array and initializes these. |
| 662 | // If the Array cannot be constructed in native code the runtime is called. This |
| 663 | // function assumes the following state: |
| 664 | // rdi: constructor (built-in Array function) |
| 665 | // rax: argc |
| 666 | // rsp[0]: return address |
| 667 | // rsp[8]: last argument |
| 668 | // This function is used for both construct and normal calls of Array. The only |
| 669 | // difference between handling a construct call and a normal call is that for a |
| 670 | // construct call the constructor function in rdi needs to be preserved for |
| 671 | // entering the generic code. In both cases argc in rax needs to be preserved. |
| 672 | // Both registers are preserved by this code so no need to differentiate between |
| 673 | // a construct call and a normal call. |
| 674 | static void ArrayNativeCode(MacroAssembler* masm, |
| 675 | Label *call_generic_code) { |
| 676 | Label argc_one_or_more, argc_two_or_more; |
| 677 | |
| 678 | // Check for array construction with zero arguments. |
| 679 | __ testq(rax, rax); |
| 680 | __ j(not_zero, &argc_one_or_more); |
| 681 | |
| 682 | // Handle construction of an empty array. |
| 683 | AllocateEmptyJSArray(masm, |
| 684 | rdi, |
| 685 | rbx, |
| 686 | rcx, |
| 687 | rdx, |
| 688 | r8, |
| 689 | kPreallocatedArrayElements, |
| 690 | call_generic_code); |
| 691 | __ IncrementCounter(&Counters::array_function_native, 1); |
| 692 | __ movq(rax, rbx); |
| 693 | __ ret(kPointerSize); |
| 694 | |
| 695 | // Check for one argument. Bail out if argument is not smi or if it is |
| 696 | // negative. |
| 697 | __ bind(&argc_one_or_more); |
| 698 | __ cmpq(rax, Immediate(1)); |
| 699 | __ j(not_equal, &argc_two_or_more); |
| 700 | __ movq(rdx, Operand(rsp, kPointerSize)); // Get the argument from the stack. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 701 | __ JumpIfNotPositiveSmi(rdx, call_generic_code); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 702 | |
| 703 | // Handle construction of an empty array of a certain size. Bail out if size |
| 704 | // is to large to actually allocate an elements array. |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 705 | __ SmiCompare(rdx, Smi::FromInt(JSObject::kInitialMaxFastElementArray)); |
| 706 | __ j(greater_equal, call_generic_code); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 707 | |
| 708 | // rax: argc |
| 709 | // rdx: array_size (smi) |
| 710 | // rdi: constructor |
| 711 | // esp[0]: return address |
| 712 | // esp[8]: argument |
| 713 | AllocateJSArray(masm, |
| 714 | rdi, |
| 715 | rdx, |
| 716 | rbx, |
| 717 | rcx, |
| 718 | r8, |
| 719 | r9, |
| 720 | true, |
| 721 | call_generic_code); |
| 722 | __ IncrementCounter(&Counters::array_function_native, 1); |
| 723 | __ movq(rax, rbx); |
| 724 | __ ret(2 * kPointerSize); |
| 725 | |
| 726 | // Handle construction of an array from a list of arguments. |
| 727 | __ bind(&argc_two_or_more); |
| 728 | __ movq(rdx, rax); |
| 729 | __ Integer32ToSmi(rdx, rdx); // Convet argc to a smi. |
| 730 | // rax: argc |
| 731 | // rdx: array_size (smi) |
| 732 | // rdi: constructor |
| 733 | // esp[0] : return address |
| 734 | // esp[8] : last argument |
| 735 | AllocateJSArray(masm, |
| 736 | rdi, |
| 737 | rdx, |
| 738 | rbx, |
| 739 | rcx, |
| 740 | r8, |
| 741 | r9, |
| 742 | false, |
| 743 | call_generic_code); |
| 744 | __ IncrementCounter(&Counters::array_function_native, 1); |
| 745 | |
| 746 | // rax: argc |
| 747 | // rbx: JSArray |
| 748 | // rcx: elements_array |
| 749 | // r8: elements_array_end (untagged) |
| 750 | // esp[0]: return address |
| 751 | // esp[8]: last argument |
| 752 | |
| 753 | // Location of the last argument |
| 754 | __ lea(r9, Operand(rsp, kPointerSize)); |
| 755 | |
| 756 | // Location of the first array element (Parameter fill_with_holes to |
| 757 | // AllocateJSArrayis false, so the FixedArray is returned in rcx). |
| 758 | __ lea(rdx, Operand(rcx, FixedArray::kHeaderSize - kHeapObjectTag)); |
| 759 | |
| 760 | // rax: argc |
| 761 | // rbx: JSArray |
| 762 | // rdx: location of the first array element |
| 763 | // r9: location of the last argument |
| 764 | // esp[0]: return address |
| 765 | // esp[8]: last argument |
| 766 | Label loop, entry; |
| 767 | __ movq(rcx, rax); |
| 768 | __ jmp(&entry); |
| 769 | __ bind(&loop); |
| 770 | __ movq(kScratchRegister, Operand(r9, rcx, times_pointer_size, 0)); |
| 771 | __ movq(Operand(rdx, 0), kScratchRegister); |
| 772 | __ addq(rdx, Immediate(kPointerSize)); |
| 773 | __ bind(&entry); |
| 774 | __ decq(rcx); |
| 775 | __ j(greater_equal, &loop); |
| 776 | |
| 777 | // Remove caller arguments from the stack and return. |
| 778 | // rax: argc |
| 779 | // rbx: JSArray |
| 780 | // esp[0]: return address |
| 781 | // esp[8]: last argument |
| 782 | __ pop(rcx); |
| 783 | __ lea(rsp, Operand(rsp, rax, times_pointer_size, 1 * kPointerSize)); |
| 784 | __ push(rcx); |
| 785 | __ movq(rax, rbx); |
| 786 | __ ret(0); |
| 787 | } |
| 788 | |
| 789 | |
christian.plesner.hansen@gmail.com | 2bc58ef | 2009-09-22 10:00:30 +0000 | [diff] [blame] | 790 | void Builtins::Generate_ArrayCode(MacroAssembler* masm) { |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 791 | // ----------- S t a t e ------------- |
| 792 | // -- rax : argc |
| 793 | // -- rsp[0] : return address |
| 794 | // -- rsp[8] : last argument |
| 795 | // ----------------------------------- |
| 796 | Label generic_array_code; |
| 797 | |
| 798 | // Get the Array function. |
| 799 | GenerateLoadArrayFunction(masm, rdi); |
| 800 | |
| 801 | if (FLAG_debug_code) { |
| 802 | // Initial map for the builtin Array function shoud be a map. |
| 803 | __ movq(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 804 | // Will both indicate a NULL and a Smi. |
| 805 | ASSERT(kSmiTag == 0); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 806 | Condition not_smi = NegateCondition(masm->CheckSmi(rbx)); |
| 807 | __ Check(not_smi, "Unexpected initial map for Array function"); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 808 | __ CmpObjectType(rbx, MAP_TYPE, rcx); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 809 | __ Check(equal, "Unexpected initial map for Array function"); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 810 | } |
| 811 | |
| 812 | // Run the native code for the Array function called as a normal function. |
| 813 | ArrayNativeCode(masm, &generic_array_code); |
| 814 | |
| 815 | // Jump to the generic array code in case the specialized code cannot handle |
| 816 | // the construction. |
| 817 | __ bind(&generic_array_code); |
christian.plesner.hansen@gmail.com | 2bc58ef | 2009-09-22 10:00:30 +0000 | [diff] [blame] | 818 | Code* code = Builtins::builtin(Builtins::ArrayCodeGeneric); |
| 819 | Handle<Code> array_code(code); |
| 820 | __ Jump(array_code, RelocInfo::CODE_TARGET); |
| 821 | } |
| 822 | |
| 823 | |
| 824 | void Builtins::Generate_ArrayConstructCode(MacroAssembler* masm) { |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 825 | // ----------- S t a t e ------------- |
| 826 | // -- rax : argc |
| 827 | // -- rdi : constructor |
| 828 | // -- rsp[0] : return address |
| 829 | // -- rsp[8] : last argument |
| 830 | // ----------------------------------- |
| 831 | Label generic_constructor; |
| 832 | |
| 833 | if (FLAG_debug_code) { |
| 834 | // The array construct code is only set for the builtin Array function which |
| 835 | // does always have a map. |
| 836 | GenerateLoadArrayFunction(masm, rbx); |
| 837 | __ cmpq(rdi, rbx); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 838 | __ Check(equal, "Unexpected Array function"); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 839 | // Initial map for the builtin Array function should be a map. |
| 840 | __ movq(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 841 | // Will both indicate a NULL and a Smi. |
| 842 | ASSERT(kSmiTag == 0); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 843 | Condition not_smi = NegateCondition(masm->CheckSmi(rbx)); |
| 844 | __ Check(not_smi, "Unexpected initial map for Array function"); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 845 | __ CmpObjectType(rbx, MAP_TYPE, rcx); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 846 | __ Check(equal, "Unexpected initial map for Array function"); |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | // Run the native code for the Array function called as constructor. |
| 850 | ArrayNativeCode(masm, &generic_constructor); |
| 851 | |
| 852 | // Jump to the generic construct code in case the specialized code cannot |
| 853 | // handle the construction. |
| 854 | __ bind(&generic_constructor); |
christian.plesner.hansen@gmail.com | 2bc58ef | 2009-09-22 10:00:30 +0000 | [diff] [blame] | 855 | Code* code = Builtins::builtin(Builtins::JSConstructStubGeneric); |
| 856 | Handle<Code> generic_construct_stub(code); |
| 857 | __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET); |
| 858 | } |
| 859 | |
| 860 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 861 | void Builtins::Generate_JSConstructCall(MacroAssembler* masm) { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 862 | // ----------- S t a t e ------------- |
| 863 | // -- rax: number of arguments |
| 864 | // -- rdi: constructor function |
| 865 | // ----------------------------------- |
| 866 | |
| 867 | Label non_function_call; |
| 868 | // Check that function is not a smi. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 869 | __ JumpIfSmi(rdi, &non_function_call); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 870 | // Check that function is a JSFunction. |
| 871 | __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); |
| 872 | __ j(not_equal, &non_function_call); |
| 873 | |
| 874 | // Jump to the function-specific construct stub. |
| 875 | __ movq(rbx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 876 | __ movq(rbx, FieldOperand(rbx, SharedFunctionInfo::kConstructStubOffset)); |
| 877 | __ lea(rbx, FieldOperand(rbx, Code::kHeaderSize)); |
| 878 | __ jmp(rbx); |
| 879 | |
| 880 | // edi: called object |
| 881 | // eax: number of arguments |
| 882 | __ bind(&non_function_call); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 883 | // Set expected number of arguments to zero (not changing eax). |
| 884 | __ movq(rbx, Immediate(0)); |
| 885 | __ GetBuiltinEntry(rdx, Builtins::CALL_NON_FUNCTION_AS_CONSTRUCTOR); |
| 886 | __ Jump(Handle<Code>(builtin(ArgumentsAdaptorTrampoline)), |
| 887 | RelocInfo::CODE_TARGET); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 888 | } |
| 889 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 890 | |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 891 | void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) { |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 892 | // Enter a construct frame. |
| 893 | __ EnterConstructFrame(); |
| 894 | |
| 895 | // Store a smi-tagged arguments count on the stack. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 896 | __ Integer32ToSmi(rax, rax); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 897 | __ push(rax); |
| 898 | |
| 899 | // Push the function to invoke on the stack. |
| 900 | __ push(rdi); |
| 901 | |
| 902 | // Try to allocate the object without transitioning into C code. If any of the |
| 903 | // preconditions is not met, the code bails out to the runtime call. |
| 904 | Label rt_call, allocated; |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 905 | if (FLAG_inline_new) { |
| 906 | Label undo_allocation; |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 907 | |
| 908 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 909 | ExternalReference debug_step_in_fp = |
| 910 | ExternalReference::debug_step_in_fp_address(); |
| 911 | __ movq(kScratchRegister, debug_step_in_fp); |
| 912 | __ cmpq(Operand(kScratchRegister, 0), Immediate(0)); |
| 913 | __ j(not_equal, &rt_call); |
| 914 | #endif |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 915 | |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 916 | // Verified that the constructor is a JSFunction. |
| 917 | // Load the initial map and verify that it is in fact a map. |
| 918 | // rdi: constructor |
| 919 | __ movq(rax, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 920 | // Will both indicate a NULL and a Smi |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 921 | ASSERT(kSmiTag == 0); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 922 | __ JumpIfSmi(rax, &rt_call); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 923 | // rdi: constructor |
| 924 | // rax: initial map (if proven valid below) |
| 925 | __ CmpObjectType(rax, MAP_TYPE, rbx); |
| 926 | __ j(not_equal, &rt_call); |
| 927 | |
| 928 | // Check that the constructor is not constructing a JSFunction (see comments |
| 929 | // in Runtime_NewObject in runtime.cc). In which case the initial map's |
| 930 | // instance type would be JS_FUNCTION_TYPE. |
| 931 | // rdi: constructor |
| 932 | // rax: initial map |
| 933 | __ CmpInstanceType(rax, JS_FUNCTION_TYPE); |
| 934 | __ j(equal, &rt_call); |
| 935 | |
| 936 | // Now allocate the JSObject on the heap. |
| 937 | __ movzxbq(rdi, FieldOperand(rax, Map::kInstanceSizeOffset)); |
| 938 | __ shl(rdi, Immediate(kPointerSizeLog2)); |
| 939 | // rdi: size of new object |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 940 | __ AllocateInNewSpace(rdi, |
| 941 | rbx, |
| 942 | rdi, |
| 943 | no_reg, |
| 944 | &rt_call, |
| 945 | NO_ALLOCATION_FLAGS); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 946 | // Allocated the JSObject, now initialize the fields. |
| 947 | // rax: initial map |
| 948 | // rbx: JSObject (not HeapObject tagged - the actual address). |
| 949 | // rdi: start of next object |
| 950 | __ movq(Operand(rbx, JSObject::kMapOffset), rax); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 951 | __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 952 | __ movq(Operand(rbx, JSObject::kPropertiesOffset), rcx); |
| 953 | __ movq(Operand(rbx, JSObject::kElementsOffset), rcx); |
| 954 | // Set extra fields in the newly allocated object. |
| 955 | // rax: initial map |
| 956 | // rbx: JSObject |
| 957 | // rdi: start of next object |
| 958 | { Label loop, entry; |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 959 | __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 960 | __ lea(rcx, Operand(rbx, JSObject::kHeaderSize)); |
| 961 | __ jmp(&entry); |
| 962 | __ bind(&loop); |
| 963 | __ movq(Operand(rcx, 0), rdx); |
| 964 | __ addq(rcx, Immediate(kPointerSize)); |
| 965 | __ bind(&entry); |
| 966 | __ cmpq(rcx, rdi); |
| 967 | __ j(less, &loop); |
| 968 | } |
| 969 | |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 970 | // Add the object tag to make the JSObject real, so that we can continue and |
| 971 | // jump into the continuation code at any time from now on. Any failures |
| 972 | // need to undo the allocation, so that the heap is in a consistent state |
| 973 | // and verifiable. |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 974 | // rax: initial map |
| 975 | // rbx: JSObject |
| 976 | // rdi: start of next object |
| 977 | __ or_(rbx, Immediate(kHeapObjectTag)); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 978 | |
| 979 | // Check if a non-empty properties array is needed. |
| 980 | // Allocate and initialize a FixedArray if it is. |
| 981 | // rax: initial map |
| 982 | // rbx: JSObject |
| 983 | // rdi: start of next object |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 984 | // Calculate total properties described map. |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 985 | __ movzxbq(rdx, FieldOperand(rax, Map::kUnusedPropertyFieldsOffset)); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 986 | __ movzxbq(rcx, FieldOperand(rax, Map::kPreAllocatedPropertyFieldsOffset)); |
| 987 | __ addq(rdx, rcx); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 988 | // Calculate unused properties past the end of the in-object properties. |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 989 | __ movzxbq(rcx, FieldOperand(rax, Map::kInObjectPropertiesOffset)); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 990 | __ subq(rdx, rcx); |
| 991 | // Done if no extra properties are to be allocated. |
| 992 | __ j(zero, &allocated); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 993 | __ Assert(positive, "Property allocation count failed."); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 994 | |
| 995 | // Scale the number of elements by pointer size and add the header for |
| 996 | // FixedArrays to the start of the next object calculation from above. |
| 997 | // rbx: JSObject |
| 998 | // rdi: start of next object (will be start of FixedArray) |
| 999 | // rdx: number of elements in properties array |
sgjesse@chromium.org | c514574 | 2009-10-07 09:00:33 +0000 | [diff] [blame] | 1000 | __ AllocateInNewSpace(FixedArray::kHeaderSize, |
| 1001 | times_pointer_size, |
| 1002 | rdx, |
| 1003 | rdi, |
| 1004 | rax, |
| 1005 | no_reg, |
| 1006 | &undo_allocation, |
| 1007 | RESULT_CONTAINS_TOP); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 1008 | |
| 1009 | // Initialize the FixedArray. |
| 1010 | // rbx: JSObject |
| 1011 | // rdi: FixedArray |
| 1012 | // rdx: number of elements |
| 1013 | // rax: start of next object |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1014 | __ LoadRoot(rcx, Heap::kFixedArrayMapRootIndex); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 1015 | __ movq(Operand(rdi, JSObject::kMapOffset), rcx); // setup the map |
| 1016 | __ movl(Operand(rdi, FixedArray::kLengthOffset), rdx); // and length |
| 1017 | |
| 1018 | // Initialize the fields to undefined. |
| 1019 | // rbx: JSObject |
| 1020 | // rdi: FixedArray |
| 1021 | // rax: start of next object |
| 1022 | // rdx: number of elements |
| 1023 | { Label loop, entry; |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1024 | __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 1025 | __ lea(rcx, Operand(rdi, FixedArray::kHeaderSize)); |
| 1026 | __ jmp(&entry); |
| 1027 | __ bind(&loop); |
| 1028 | __ movq(Operand(rcx, 0), rdx); |
| 1029 | __ addq(rcx, Immediate(kPointerSize)); |
| 1030 | __ bind(&entry); |
| 1031 | __ cmpq(rcx, rax); |
| 1032 | __ j(below, &loop); |
| 1033 | } |
| 1034 | |
| 1035 | // Store the initialized FixedArray into the properties field of |
| 1036 | // the JSObject |
| 1037 | // rbx: JSObject |
| 1038 | // rdi: FixedArray |
| 1039 | __ or_(rdi, Immediate(kHeapObjectTag)); // add the heap tag |
| 1040 | __ movq(FieldOperand(rbx, JSObject::kPropertiesOffset), rdi); |
| 1041 | |
| 1042 | |
| 1043 | // Continue with JSObject being successfully allocated |
| 1044 | // rbx: JSObject |
| 1045 | __ jmp(&allocated); |
| 1046 | |
| 1047 | // Undo the setting of the new top so that the heap is verifiable. For |
| 1048 | // example, the map's unused properties potentially do not match the |
| 1049 | // allocated objects unused properties. |
| 1050 | // rbx: JSObject (previous new top) |
| 1051 | __ bind(&undo_allocation); |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1052 | __ UndoAllocationInNewSpace(rbx); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 1053 | } |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1054 | |
| 1055 | // Allocate the new receiver object using the runtime call. |
| 1056 | // rdi: function (constructor) |
| 1057 | __ bind(&rt_call); |
christian.plesner.hansen@gmail.com | 5a6af92 | 2009-08-12 14:20:51 +0000 | [diff] [blame] | 1058 | // Must restore rdi (constructor) before calling runtime. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1059 | __ movq(rdi, Operand(rsp, 0)); |
| 1060 | __ push(rdi); |
| 1061 | __ CallRuntime(Runtime::kNewObject, 1); |
| 1062 | __ movq(rbx, rax); // store result in rbx |
| 1063 | |
| 1064 | // New object allocated. |
| 1065 | // rbx: newly allocated object |
| 1066 | __ bind(&allocated); |
| 1067 | // Retrieve the function from the stack. |
| 1068 | __ pop(rdi); |
| 1069 | |
| 1070 | // Retrieve smi-tagged arguments count from the stack. |
| 1071 | __ movq(rax, Operand(rsp, 0)); |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1072 | __ SmiToInteger32(rax, rax); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1073 | |
| 1074 | // Push the allocated receiver to the stack. We need two copies |
| 1075 | // because we may have to return the original one and the calling |
| 1076 | // conventions dictate that the called function pops the receiver. |
| 1077 | __ push(rbx); |
| 1078 | __ push(rbx); |
| 1079 | |
| 1080 | // Setup pointer to last argument. |
| 1081 | __ lea(rbx, Operand(rbp, StandardFrameConstants::kCallerSPOffset)); |
| 1082 | |
| 1083 | // Copy arguments and receiver to the expression stack. |
| 1084 | Label loop, entry; |
| 1085 | __ movq(rcx, rax); |
| 1086 | __ jmp(&entry); |
| 1087 | __ bind(&loop); |
| 1088 | __ push(Operand(rbx, rcx, times_pointer_size, 0)); |
| 1089 | __ bind(&entry); |
| 1090 | __ decq(rcx); |
| 1091 | __ j(greater_equal, &loop); |
| 1092 | |
| 1093 | // Call the function. |
| 1094 | ParameterCount actual(rax); |
| 1095 | __ InvokeFunction(rdi, actual, CALL_FUNCTION); |
| 1096 | |
| 1097 | // Restore context from the frame. |
| 1098 | __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 1099 | |
| 1100 | // If the result is an object (in the ECMA sense), we should get rid |
| 1101 | // of the receiver and use the result; see ECMA-262 section 13.2.2-7 |
| 1102 | // on page 74. |
| 1103 | Label use_receiver, exit; |
| 1104 | // If the result is a smi, it is *not* an object in the ECMA sense. |
ager@chromium.org | 4af710e | 2009-09-15 12:20:11 +0000 | [diff] [blame] | 1105 | __ JumpIfSmi(rax, &use_receiver); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1106 | |
| 1107 | // If the type of the result (stored in its map) is less than |
| 1108 | // FIRST_JS_OBJECT_TYPE, it is not an object in the ECMA sense. |
| 1109 | __ CmpObjectType(rax, FIRST_JS_OBJECT_TYPE, rcx); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 1110 | __ j(above_equal, &exit); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1111 | |
| 1112 | // Throw away the result of the constructor invocation and use the |
| 1113 | // on-stack receiver as the result. |
| 1114 | __ bind(&use_receiver); |
| 1115 | __ movq(rax, Operand(rsp, 0)); |
| 1116 | |
| 1117 | // Restore the arguments count and leave the construct frame. |
| 1118 | __ bind(&exit); |
| 1119 | __ movq(rbx, Operand(rsp, kPointerSize)); // get arguments count |
| 1120 | __ LeaveConstructFrame(); |
| 1121 | |
| 1122 | // Remove caller arguments from the stack and return. |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1123 | __ pop(rcx); |
christian.plesner.hansen@gmail.com | 9d58c2b | 2009-10-16 11:48:38 +0000 | [diff] [blame] | 1124 | SmiIndex index = masm->SmiToIndex(rbx, rbx, kPointerSizeLog2); |
| 1125 | __ lea(rsp, Operand(rsp, index.reg, index.scale, 1 * kPointerSize)); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1126 | __ push(rcx); |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1127 | __ IncrementCounter(&Counters::constructed_objects, 1); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1128 | __ ret(0); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1129 | } |
| 1130 | |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1131 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1132 | static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, |
| 1133 | bool is_construct) { |
| 1134 | // Expects five C++ function parameters. |
| 1135 | // - Address entry (ignored) |
| 1136 | // - JSFunction* function ( |
| 1137 | // - Object* receiver |
| 1138 | // - int argc |
| 1139 | // - Object*** argv |
| 1140 | // (see Handle::Invoke in execution.cc). |
| 1141 | |
| 1142 | // Platform specific argument handling. After this, the stack contains |
| 1143 | // an internal frame and the pushed function and receiver, and |
| 1144 | // register rax and rbx holds the argument count and argument array, |
| 1145 | // while rdi holds the function pointer and rsi the context. |
ager@chromium.org | 96c75b5 | 2009-08-26 09:13:16 +0000 | [diff] [blame] | 1146 | #ifdef _WIN64 |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1147 | // MSVC parameters in: |
| 1148 | // rcx : entry (ignored) |
| 1149 | // rdx : function |
| 1150 | // r8 : receiver |
| 1151 | // r9 : argc |
| 1152 | // [rsp+0x20] : argv |
| 1153 | |
| 1154 | // Clear the context before we push it when entering the JS frame. |
| 1155 | __ xor_(rsi, rsi); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1156 | __ EnterInternalFrame(); |
| 1157 | |
| 1158 | // Load the function context into rsi. |
| 1159 | __ movq(rsi, FieldOperand(rdx, JSFunction::kContextOffset)); |
| 1160 | |
| 1161 | // Push the function and the receiver onto the stack. |
| 1162 | __ push(rdx); |
| 1163 | __ push(r8); |
| 1164 | |
| 1165 | // Load the number of arguments and setup pointer to the arguments. |
| 1166 | __ movq(rax, r9); |
| 1167 | // Load the previous frame pointer to access C argument on stack |
| 1168 | __ movq(kScratchRegister, Operand(rbp, 0)); |
| 1169 | __ movq(rbx, Operand(kScratchRegister, EntryFrameConstants::kArgvOffset)); |
| 1170 | // Load the function pointer into rdi. |
| 1171 | __ movq(rdi, rdx); |
ager@chromium.org | 96c75b5 | 2009-08-26 09:13:16 +0000 | [diff] [blame] | 1172 | #else // !defined(_WIN64) |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1173 | // GCC parameters in: |
| 1174 | // rdi : entry (ignored) |
| 1175 | // rsi : function |
| 1176 | // rdx : receiver |
| 1177 | // rcx : argc |
| 1178 | // r8 : argv |
| 1179 | |
| 1180 | __ movq(rdi, rsi); |
| 1181 | // rdi : function |
| 1182 | |
| 1183 | // Clear the context before we push it when entering the JS frame. |
| 1184 | __ xor_(rsi, rsi); |
| 1185 | // Enter an internal frame. |
| 1186 | __ EnterInternalFrame(); |
| 1187 | |
| 1188 | // Push the function and receiver and setup the context. |
| 1189 | __ push(rdi); |
| 1190 | __ push(rdx); |
| 1191 | __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 1192 | |
| 1193 | // Load the number of arguments and setup pointer to the arguments. |
| 1194 | __ movq(rax, rcx); |
| 1195 | __ movq(rbx, r8); |
ager@chromium.org | 96c75b5 | 2009-08-26 09:13:16 +0000 | [diff] [blame] | 1196 | #endif // _WIN64 |
ager@chromium.org | 18ad94b | 2009-09-02 08:22:29 +0000 | [diff] [blame] | 1197 | |
| 1198 | // Set up the roots register. |
| 1199 | ExternalReference roots_address = ExternalReference::roots_address(); |
| 1200 | __ movq(r13, roots_address); |
| 1201 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1202 | // Current stack contents: |
| 1203 | // [rsp + 2 * kPointerSize ... ]: Internal frame |
| 1204 | // [rsp + kPointerSize] : function |
| 1205 | // [rsp] : receiver |
| 1206 | // Current register contents: |
| 1207 | // rax : argc |
| 1208 | // rbx : argv |
| 1209 | // rsi : context |
| 1210 | // rdi : function |
| 1211 | |
| 1212 | // Copy arguments to the stack in a loop. |
| 1213 | // Register rbx points to array of pointers to handle locations. |
| 1214 | // Push the values of these handles. |
| 1215 | Label loop, entry; |
| 1216 | __ xor_(rcx, rcx); // Set loop variable to 0. |
| 1217 | __ jmp(&entry); |
| 1218 | __ bind(&loop); |
ager@chromium.org | 3e87580 | 2009-06-29 08:26:34 +0000 | [diff] [blame] | 1219 | __ movq(kScratchRegister, Operand(rbx, rcx, times_pointer_size, 0)); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1220 | __ push(Operand(kScratchRegister, 0)); // dereference handle |
| 1221 | __ addq(rcx, Immediate(1)); |
| 1222 | __ bind(&entry); |
| 1223 | __ cmpq(rcx, rax); |
| 1224 | __ j(not_equal, &loop); |
| 1225 | |
| 1226 | // Invoke the code. |
| 1227 | if (is_construct) { |
| 1228 | // Expects rdi to hold function pointer. |
sgjesse@chromium.org | 911335c | 2009-08-19 12:59:44 +0000 | [diff] [blame] | 1229 | __ Call(Handle<Code>(Builtins::builtin(Builtins::JSConstructCall)), |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1230 | RelocInfo::CODE_TARGET); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1231 | } else { |
| 1232 | ParameterCount actual(rax); |
| 1233 | // Function must be in rdi. |
| 1234 | __ InvokeFunction(rdi, actual, CALL_FUNCTION); |
| 1235 | } |
| 1236 | |
| 1237 | // Exit the JS frame. Notice that this also removes the empty |
| 1238 | // context and the function left on the stack by the code |
| 1239 | // invocation. |
| 1240 | __ LeaveInternalFrame(); |
| 1241 | // TODO(X64): Is argument correct? Is there a receiver to remove? |
| 1242 | __ ret(1 * kPointerSize); // remove receiver |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1243 | } |
| 1244 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1245 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1246 | void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1247 | Generate_JSEntryTrampolineHelper(masm, false); |
| 1248 | } |
| 1249 | |
| 1250 | |
| 1251 | void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { |
| 1252 | Generate_JSEntryTrampolineHelper(masm, true); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1253 | } |
| 1254 | |
| 1255 | } } // namespace v8::internal |