2008-09-09 20:08:45 +00:00
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// Copyright 2006-2008 the V8 project authors. All rights reserved.
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2008-07-03 15:10:15 +00:00
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "v8.h"
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2010-05-17 15:41:35 +00:00
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#if defined(V8_TARGET_ARCH_ARM)
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2010-04-22 07:18:30 +00:00
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#include "assembler-arm.h"
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2010-05-10 10:45:18 +00:00
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#include "codegen.h"
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2008-07-03 15:10:15 +00:00
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#include "codegen-inl.h"
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2010-04-22 07:18:30 +00:00
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#include "disasm.h"
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2008-07-03 15:10:15 +00:00
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#include "ic-inl.h"
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#include "runtime.h"
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#include "stub-cache.h"
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2009-05-25 10:05:56 +00:00
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namespace v8 {
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namespace internal {
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2008-07-03 15:10:15 +00:00
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// ----------------------------------------------------------------------------
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// Static IC stub generators.
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//
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2009-04-21 13:42:12 +00:00
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#define __ ACCESS_MASM(masm)
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2008-07-03 15:10:15 +00:00
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// Helper function used from LoadIC/CallIC GenerateNormal.
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2010-06-01 21:11:38 +00:00
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// receiver: Receiver. It is not clobbered if a jump to the miss label is
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// done
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// name: Property name. It is not clobbered if a jump to the miss label is
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// done
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// result: Register for the result. It is only updated if a jump to the miss
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// label is not done. Can be the same as receiver or name clobbering
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// one of these in the case of not jumping to the miss label.
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// The three scratch registers need to be different from the receiver, name and
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// result.
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2008-07-03 15:10:15 +00:00
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static void GenerateDictionaryLoad(MacroAssembler* masm,
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2008-10-27 14:12:02 +00:00
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Label* miss,
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2010-06-01 21:11:38 +00:00
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Register receiver,
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Register name,
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Register result,
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Register scratch1,
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Register scratch2,
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Register scratch3,
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DictionaryCheck check_dictionary) {
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// Main use of the scratch registers.
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// scratch1: Used to hold the property dictionary.
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// scratch2: Used as temporary and to hold the capacity of the property
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// dictionary.
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// scratch3: Used as temporary.
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2008-07-03 15:10:15 +00:00
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2008-10-27 14:12:02 +00:00
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Label done;
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2008-07-03 15:10:15 +00:00
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// Check for the absence of an interceptor.
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2010-06-01 21:11:38 +00:00
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// Load the map into scratch1.
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__ ldr(scratch1, FieldMemOperand(receiver, JSObject::kMapOffset));
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2010-03-26 09:05:22 +00:00
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// Bail out if the receiver has a named interceptor.
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2010-06-01 21:11:38 +00:00
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__ ldrb(scratch2, FieldMemOperand(scratch1, Map::kBitFieldOffset));
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__ tst(scratch2, Operand(1 << Map::kHasNamedInterceptor));
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2010-03-26 09:05:22 +00:00
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__ b(nz, miss);
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2008-07-03 15:10:15 +00:00
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2009-07-03 12:43:59 +00:00
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// Bail out if we have a JS global proxy object.
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2010-06-01 21:11:38 +00:00
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__ ldrb(scratch2, FieldMemOperand(scratch1, Map::kInstanceTypeOffset));
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__ cmp(scratch2, Operand(JS_GLOBAL_PROXY_TYPE));
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2009-06-30 10:05:36 +00:00
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__ b(eq, miss);
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2008-07-03 15:10:15 +00:00
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2009-07-13 23:15:04 +00:00
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// Possible work-around for http://crbug.com/16276.
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// See also: http://codereview.chromium.org/155418.
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2010-06-01 21:11:38 +00:00
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__ cmp(scratch2, Operand(JS_GLOBAL_OBJECT_TYPE));
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2009-07-13 23:15:04 +00:00
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__ b(eq, miss);
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2010-06-01 21:11:38 +00:00
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__ cmp(scratch2, Operand(JS_BUILTINS_OBJECT_TYPE));
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2009-07-13 23:15:04 +00:00
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__ b(eq, miss);
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2010-06-01 21:11:38 +00:00
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// Load the properties array.
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__ ldr(scratch1, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
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2008-07-03 15:10:15 +00:00
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// Check that the properties array is a dictionary.
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2010-06-01 21:11:38 +00:00
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if (check_dictionary == CHECK_DICTIONARY) {
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__ ldr(scratch2, FieldMemOperand(scratch1, HeapObject::kMapOffset));
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__ LoadRoot(ip, Heap::kHashTableMapRootIndex);
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__ cmp(scratch2, ip);
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__ b(ne, miss);
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}
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2008-07-03 15:10:15 +00:00
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// Compute the capacity mask.
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2009-07-17 12:12:24 +00:00
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const int kCapacityOffset = StringDictionary::kHeaderSize +
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StringDictionary::kCapacityIndex * kPointerSize;
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2010-06-01 21:11:38 +00:00
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__ ldr(scratch2, FieldMemOperand(scratch1, kCapacityOffset));
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__ mov(scratch2, Operand(scratch2, ASR, kSmiTagSize)); // convert smi to int
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__ sub(scratch2, scratch2, Operand(1));
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2008-07-03 15:10:15 +00:00
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2009-07-17 12:12:24 +00:00
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const int kElementsStartOffset = StringDictionary::kHeaderSize +
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StringDictionary::kElementsStartIndex * kPointerSize;
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2008-07-03 15:10:15 +00:00
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// Generate an unrolled loop that performs a few probes before
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// giving up. Measurements done on Gmail indicate that 2 probes
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// cover ~93% of loads from dictionaries.
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2009-07-17 04:57:17 +00:00
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static const int kProbes = 4;
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for (int i = 0; i < kProbes; i++) {
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// Compute the masked index: (hash + i + i * i) & mask.
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2010-06-01 21:11:38 +00:00
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__ ldr(scratch3, FieldMemOperand(name, String::kHashFieldOffset));
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2009-04-16 09:30:23 +00:00
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if (i > 0) {
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2009-11-24 14:10:06 +00:00
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// Add the probe offset (i + i * i) left shifted to avoid right shifting
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// the hash in a separate instruction. The value hash + i + i * i is right
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// shifted in the following and instruction.
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2009-11-25 08:14:23 +00:00
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ASSERT(StringDictionary::GetProbeOffset(i) <
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1 << (32 - String::kHashFieldOffset));
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2010-06-01 21:11:38 +00:00
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__ add(scratch3, scratch3, Operand(
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2009-12-01 09:54:47 +00:00
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StringDictionary::GetProbeOffset(i) << String::kHashShift));
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2009-04-16 09:30:23 +00:00
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}
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2010-06-01 21:11:38 +00:00
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__ and_(scratch3, scratch2, Operand(scratch3, LSR, String::kHashShift));
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2009-07-17 04:57:17 +00:00
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2008-07-03 15:10:15 +00:00
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// Scale the index by multiplying by the element size.
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2009-07-02 06:50:43 +00:00
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ASSERT(StringDictionary::kEntrySize == 3);
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2010-06-01 21:11:38 +00:00
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// scratch3 = scratch3 * 3.
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__ add(scratch3, scratch3, Operand(scratch3, LSL, 1));
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2008-07-03 15:10:15 +00:00
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// Check if the key is identical to the name.
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2010-06-01 21:11:38 +00:00
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__ add(scratch3, scratch1, Operand(scratch3, LSL, 2));
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__ ldr(ip, FieldMemOperand(scratch3, kElementsStartOffset));
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__ cmp(name, Operand(ip));
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2008-07-03 15:10:15 +00:00
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if (i != kProbes - 1) {
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2008-10-27 14:12:02 +00:00
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__ b(eq, &done);
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2008-07-03 15:10:15 +00:00
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} else {
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2008-10-27 14:12:02 +00:00
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__ b(ne, miss);
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2008-07-03 15:10:15 +00:00
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}
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}
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// Check that the value is a normal property.
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2010-06-01 21:11:38 +00:00
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__ bind(&done); // scratch3 == scratch1 + 4 * index
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__ ldr(scratch2,
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FieldMemOperand(scratch3, kElementsStartOffset + 2 * kPointerSize));
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__ tst(scratch2, Operand(PropertyDetails::TypeField::mask() << kSmiTagSize));
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2008-10-27 14:12:02 +00:00
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__ b(ne, miss);
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2008-07-03 15:10:15 +00:00
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// Get the value at the masked, scaled index and return.
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2010-06-01 21:11:38 +00:00
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__ ldr(result,
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FieldMemOperand(scratch3, kElementsStartOffset + 1 * kPointerSize));
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2008-07-03 15:10:15 +00:00
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}
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2010-03-26 09:05:22 +00:00
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static void GenerateNumberDictionaryLoad(MacroAssembler* masm,
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Label* miss,
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Register elements,
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Register key,
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Register t0,
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Register t1,
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Register t2) {
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// Register use:
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//
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// elements - holds the slow-case elements of the receiver and is unchanged.
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//
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// key - holds the smi key on entry and is unchanged if a branch is
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// performed to the miss label.
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2010-05-27 12:30:45 +00:00
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// Holds the result on exit if the load succeeded.
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2010-03-26 09:05:22 +00:00
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//
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// Scratch registers:
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//
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// t0 - holds the untagged key on entry and holds the hash once computed.
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//
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// t1 - used to hold the capacity mask of the dictionary
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//
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// t2 - used for the index into the dictionary.
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Label done;
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// Compute the hash code from the untagged key. This must be kept in sync
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// with ComputeIntegerHash in utils.h.
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//
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// hash = ~hash + (hash << 15);
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__ mvn(t1, Operand(t0));
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__ add(t0, t1, Operand(t0, LSL, 15));
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// hash = hash ^ (hash >> 12);
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__ eor(t0, t0, Operand(t0, LSR, 12));
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// hash = hash + (hash << 2);
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__ add(t0, t0, Operand(t0, LSL, 2));
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// hash = hash ^ (hash >> 4);
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__ eor(t0, t0, Operand(t0, LSR, 4));
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// hash = hash * 2057;
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__ mov(t1, Operand(2057));
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__ mul(t0, t0, t1);
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// hash = hash ^ (hash >> 16);
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__ eor(t0, t0, Operand(t0, LSR, 16));
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// Compute the capacity mask.
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__ ldr(t1, FieldMemOperand(elements, NumberDictionary::kCapacityOffset));
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__ mov(t1, Operand(t1, ASR, kSmiTagSize)); // convert smi to int
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__ sub(t1, t1, Operand(1));
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// Generate an unrolled loop that performs a few probes before giving up.
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static const int kProbes = 4;
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for (int i = 0; i < kProbes; i++) {
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// Use t2 for index calculations and keep the hash intact in t0.
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__ mov(t2, t0);
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// Compute the masked index: (hash + i + i * i) & mask.
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if (i > 0) {
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__ add(t2, t2, Operand(NumberDictionary::GetProbeOffset(i)));
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}
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__ and_(t2, t2, Operand(t1));
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// Scale the index by multiplying by the element size.
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ASSERT(NumberDictionary::kEntrySize == 3);
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__ add(t2, t2, Operand(t2, LSL, 1)); // t2 = t2 * 3
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// Check if the key is identical to the name.
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__ add(t2, elements, Operand(t2, LSL, kPointerSizeLog2));
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__ ldr(ip, FieldMemOperand(t2, NumberDictionary::kElementsStartOffset));
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__ cmp(key, Operand(ip));
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if (i != kProbes - 1) {
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__ b(eq, &done);
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} else {
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__ b(ne, miss);
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}
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}
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__ bind(&done);
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// Check that the value is a normal property.
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// t2: elements + (index * kPointerSize)
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const int kDetailsOffset =
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NumberDictionary::kElementsStartOffset + 2 * kPointerSize;
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__ ldr(t1, FieldMemOperand(t2, kDetailsOffset));
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__ tst(t1, Operand(Smi::FromInt(PropertyDetails::TypeField::mask())));
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__ b(ne, miss);
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// Get the value at the masked, scaled index and return.
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const int kValueOffset =
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NumberDictionary::kElementsStartOffset + kPointerSize;
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2010-05-27 12:30:45 +00:00
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__ ldr(key, FieldMemOperand(t2, kValueOffset));
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2010-03-26 09:05:22 +00:00
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}
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2008-07-03 15:10:15 +00:00
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void LoadIC::GenerateArrayLength(MacroAssembler* masm) {
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// ----------- S t a t e -------------
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// -- r2 : name
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// -- lr : return address
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2010-04-27 19:24:36 +00:00
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// -- r0 : receiver
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// -- sp[0] : receiver
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2008-07-03 15:10:15 +00:00
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// -----------------------------------
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Label miss;
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2008-11-13 01:18:31 +00:00
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StubCompiler::GenerateLoadArrayLength(masm, r0, r3, &miss);
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2008-07-03 15:10:15 +00:00
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__ bind(&miss);
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2008-11-13 01:18:31 +00:00
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StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
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2008-07-03 15:10:15 +00:00
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}
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2008-10-27 12:44:11 +00:00
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void LoadIC::GenerateStringLength(MacroAssembler* masm) {
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2008-07-03 15:10:15 +00:00
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// ----------- S t a t e -------------
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// -- r2 : name
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// -- lr : return address
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2010-04-27 19:24:36 +00:00
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// -- r0 : receiver
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// -- sp[0] : receiver
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2008-07-03 15:10:15 +00:00
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// -----------------------------------
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2008-11-20 16:59:00 +00:00
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Label miss;
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2008-07-03 15:10:15 +00:00
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2010-02-09 13:06:37 +00:00
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StubCompiler::GenerateLoadStringLength(masm, r0, r1, r3, &miss);
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2008-07-03 15:10:15 +00:00
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// Cache miss: Jump to runtime.
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__ bind(&miss);
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2008-11-13 01:18:31 +00:00
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StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
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2008-07-03 15:10:15 +00:00
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}
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void LoadIC::GenerateFunctionPrototype(MacroAssembler* masm) {
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// ----------- S t a t e -------------
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// -- r2 : name
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// -- lr : return address
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2010-04-27 19:24:36 +00:00
|
|
|
// -- r0 : receiver
|
|
|
|
// -- sp[0] : receiver
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------
|
2009-07-10 23:26:33 +00:00
|
|
|
Label miss;
|
|
|
|
|
|
|
|
StubCompiler::GenerateLoadFunctionPrototype(masm, r0, r1, r3, &miss);
|
|
|
|
__ bind(&miss);
|
|
|
|
StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Defined in ic.cc.
|
|
|
|
Object* CallIC_Miss(Arguments args);
|
|
|
|
|
|
|
|
void CallIC::GenerateMegamorphic(MacroAssembler* masm, int argc) {
|
|
|
|
// ----------- S t a t e -------------
|
2010-02-15 12:26:07 +00:00
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------
|
|
|
|
Label number, non_number, non_string, boolean, probe, miss;
|
|
|
|
|
2008-08-13 09:32:07 +00:00
|
|
|
// Get the receiver of the function from the stack into r1.
|
|
|
|
__ ldr(r1, MemOperand(sp, argc * kPointerSize));
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Probe the stub cache.
|
|
|
|
Code::Flags flags =
|
2009-05-25 18:29:02 +00:00
|
|
|
Code::ComputeFlags(Code::CALL_IC, NOT_IN_LOOP, MONOMORPHIC, NORMAL, argc);
|
2009-07-03 08:00:51 +00:00
|
|
|
StubCache::GenerateProbe(masm, flags, r1, r2, r3, no_reg);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// If the stub cache probing failed, the receiver might be a value.
|
|
|
|
// For value objects, we use the map of the prototype objects for
|
|
|
|
// the corresponding JSValue for the cache and that is what we need
|
|
|
|
// to probe.
|
|
|
|
//
|
|
|
|
// Check for number.
|
|
|
|
__ tst(r1, Operand(kSmiTagMask));
|
|
|
|
__ b(eq, &number);
|
2009-06-10 11:42:13 +00:00
|
|
|
__ CompareObjectType(r1, r3, r3, HEAP_NUMBER_TYPE);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ b(ne, &non_number);
|
|
|
|
__ bind(&number);
|
|
|
|
StubCompiler::GenerateLoadGlobalFunctionPrototype(
|
|
|
|
masm, Context::NUMBER_FUNCTION_INDEX, r1);
|
|
|
|
__ b(&probe);
|
|
|
|
|
|
|
|
// Check for string.
|
|
|
|
__ bind(&non_number);
|
|
|
|
__ cmp(r3, Operand(FIRST_NONSTRING_TYPE));
|
|
|
|
__ b(hs, &non_string);
|
|
|
|
StubCompiler::GenerateLoadGlobalFunctionPrototype(
|
|
|
|
masm, Context::STRING_FUNCTION_INDEX, r1);
|
|
|
|
__ b(&probe);
|
|
|
|
|
|
|
|
// Check for boolean.
|
|
|
|
__ bind(&non_string);
|
2009-08-24 11:57:57 +00:00
|
|
|
__ LoadRoot(ip, Heap::kTrueValueRootIndex);
|
|
|
|
__ cmp(r1, ip);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ b(eq, &boolean);
|
2009-08-24 11:57:57 +00:00
|
|
|
__ LoadRoot(ip, Heap::kFalseValueRootIndex);
|
|
|
|
__ cmp(r1, ip);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ b(ne, &miss);
|
|
|
|
__ bind(&boolean);
|
|
|
|
StubCompiler::GenerateLoadGlobalFunctionPrototype(
|
|
|
|
masm, Context::BOOLEAN_FUNCTION_INDEX, r1);
|
|
|
|
|
|
|
|
// Probe the stub cache for the value object.
|
|
|
|
__ bind(&probe);
|
2009-07-03 08:00:51 +00:00
|
|
|
StubCache::GenerateProbe(masm, flags, r1, r2, r3, no_reg);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Cache miss: Jump to runtime.
|
|
|
|
__ bind(&miss);
|
2009-12-17 10:23:20 +00:00
|
|
|
GenerateMiss(masm, argc);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-10-27 14:12:02 +00:00
|
|
|
static void GenerateNormalHelper(MacroAssembler* masm,
|
|
|
|
int argc,
|
|
|
|
bool is_global_object,
|
2010-04-27 19:24:36 +00:00
|
|
|
Label* miss,
|
|
|
|
Register scratch) {
|
2008-10-27 14:12:02 +00:00
|
|
|
// Search dictionary - put result in register r1.
|
2010-06-01 21:11:38 +00:00
|
|
|
GenerateDictionaryLoad(masm, miss, r1, r2, r1, r0, r3, r4, CHECK_DICTIONARY);
|
2008-10-27 14:12:02 +00:00
|
|
|
|
|
|
|
// Check that the value isn't a smi.
|
|
|
|
__ tst(r1, Operand(kSmiTagMask));
|
|
|
|
__ b(eq, miss);
|
|
|
|
|
|
|
|
// Check that the value is a JSFunction.
|
2010-04-27 19:24:36 +00:00
|
|
|
__ CompareObjectType(r1, scratch, scratch, JS_FUNCTION_TYPE);
|
2008-10-27 14:12:02 +00:00
|
|
|
__ b(ne, miss);
|
|
|
|
|
|
|
|
// Patch the receiver with the global proxy if necessary.
|
|
|
|
if (is_global_object) {
|
2010-02-15 12:26:07 +00:00
|
|
|
__ ldr(r0, MemOperand(sp, argc * kPointerSize));
|
|
|
|
__ ldr(r0, FieldMemOperand(r0, GlobalObject::kGlobalReceiverOffset));
|
|
|
|
__ str(r0, MemOperand(sp, argc * kPointerSize));
|
2008-10-27 14:12:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// Invoke the function.
|
|
|
|
ParameterCount actual(argc);
|
|
|
|
__ InvokeFunction(r1, actual, JUMP_FUNCTION);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
void CallIC::GenerateNormal(MacroAssembler* masm, int argc) {
|
|
|
|
// ----------- S t a t e -------------
|
2010-02-15 12:26:07 +00:00
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------
|
2008-10-27 14:12:02 +00:00
|
|
|
Label miss, global_object, non_global_object;
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-08-13 09:32:07 +00:00
|
|
|
// Get the receiver of the function from the stack into r1.
|
|
|
|
__ ldr(r1, MemOperand(sp, argc * kPointerSize));
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Check that the receiver isn't a smi.
|
|
|
|
__ tst(r1, Operand(kSmiTagMask));
|
|
|
|
__ b(eq, &miss);
|
|
|
|
|
2009-06-10 11:42:13 +00:00
|
|
|
// Check that the receiver is a valid JS object. Put the map in r3.
|
|
|
|
__ CompareObjectType(r1, r3, r0, FIRST_JS_OBJECT_TYPE);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ b(lt, &miss);
|
|
|
|
|
|
|
|
// If this assert fails, we have to check upper bound too.
|
|
|
|
ASSERT(LAST_TYPE == JS_FUNCTION_TYPE);
|
|
|
|
|
2008-10-27 14:12:02 +00:00
|
|
|
// Check for access to global object.
|
|
|
|
__ cmp(r0, Operand(JS_GLOBAL_OBJECT_TYPE));
|
|
|
|
__ b(eq, &global_object);
|
|
|
|
__ cmp(r0, Operand(JS_BUILTINS_OBJECT_TYPE));
|
|
|
|
__ b(ne, &non_global_object);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-10-27 14:12:02 +00:00
|
|
|
// Accessing global object: Load and invoke.
|
|
|
|
__ bind(&global_object);
|
2008-12-10 08:05:10 +00:00
|
|
|
// Check that the global object does not require access checks.
|
|
|
|
__ ldrb(r3, FieldMemOperand(r3, Map::kBitFieldOffset));
|
|
|
|
__ tst(r3, Operand(1 << Map::kIsAccessCheckNeeded));
|
|
|
|
__ b(ne, &miss);
|
2010-04-27 19:24:36 +00:00
|
|
|
GenerateNormalHelper(masm, argc, true, &miss, r4);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-10-27 14:12:02 +00:00
|
|
|
// Accessing non-global object: Check for access to global proxy.
|
|
|
|
Label global_proxy, invoke;
|
|
|
|
__ bind(&non_global_object);
|
|
|
|
__ cmp(r0, Operand(JS_GLOBAL_PROXY_TYPE));
|
|
|
|
__ b(eq, &global_proxy);
|
2008-12-10 08:05:10 +00:00
|
|
|
// Check that the non-global, non-global-proxy object does not
|
|
|
|
// require access checks.
|
|
|
|
__ ldrb(r3, FieldMemOperand(r3, Map::kBitFieldOffset));
|
|
|
|
__ tst(r3, Operand(1 << Map::kIsAccessCheckNeeded));
|
|
|
|
__ b(ne, &miss);
|
2008-10-27 14:12:02 +00:00
|
|
|
__ bind(&invoke);
|
2010-04-27 19:24:36 +00:00
|
|
|
GenerateNormalHelper(masm, argc, false, &miss, r4);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Global object access: Check access rights.
|
2008-10-27 14:12:02 +00:00
|
|
|
__ bind(&global_proxy);
|
2008-10-21 20:11:50 +00:00
|
|
|
__ CheckAccessGlobalProxy(r1, r0, &miss);
|
2008-10-27 14:12:02 +00:00
|
|
|
__ b(&invoke);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-08-06 10:02:49 +00:00
|
|
|
// Cache miss: Jump to runtime.
|
2008-07-03 15:10:15 +00:00
|
|
|
__ bind(&miss);
|
2009-12-17 10:23:20 +00:00
|
|
|
GenerateMiss(masm, argc);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-12-17 10:23:20 +00:00
|
|
|
void CallIC::GenerateMiss(MacroAssembler* masm, int argc) {
|
2008-07-03 15:10:15 +00:00
|
|
|
// ----------- S t a t e -------------
|
2010-02-15 12:26:07 +00:00
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------
|
|
|
|
|
2008-09-12 03:29:06 +00:00
|
|
|
// Get the receiver of the function from the stack.
|
2010-02-15 12:26:07 +00:00
|
|
|
__ ldr(r3, MemOperand(sp, argc * kPointerSize));
|
2008-09-12 03:29:06 +00:00
|
|
|
|
|
|
|
__ EnterInternalFrame();
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Push the receiver and the name of the function.
|
2010-04-26 14:25:29 +00:00
|
|
|
__ Push(r3, r2);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Call the entry.
|
2008-08-13 09:32:07 +00:00
|
|
|
__ mov(r0, Operand(2));
|
2009-12-17 10:23:20 +00:00
|
|
|
__ mov(r1, Operand(ExternalReference(IC_Utility(kCallIC_Miss))));
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2009-09-08 11:52:05 +00:00
|
|
|
CEntryStub stub(1);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ CallStub(&stub);
|
|
|
|
|
2008-10-24 12:58:17 +00:00
|
|
|
// Move result to r1 and leave the internal frame.
|
2008-07-03 15:10:15 +00:00
|
|
|
__ mov(r1, Operand(r0));
|
2008-09-23 08:19:26 +00:00
|
|
|
__ LeaveInternalFrame();
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-10-27 14:12:02 +00:00
|
|
|
// Check if the receiver is a global object of some sort.
|
|
|
|
Label invoke, global;
|
|
|
|
__ ldr(r2, MemOperand(sp, argc * kPointerSize)); // receiver
|
|
|
|
__ tst(r2, Operand(kSmiTagMask));
|
|
|
|
__ b(eq, &invoke);
|
2009-06-10 11:42:13 +00:00
|
|
|
__ CompareObjectType(r2, r3, r3, JS_GLOBAL_OBJECT_TYPE);
|
2008-10-27 14:12:02 +00:00
|
|
|
__ b(eq, &global);
|
|
|
|
__ cmp(r3, Operand(JS_BUILTINS_OBJECT_TYPE));
|
|
|
|
__ b(ne, &invoke);
|
|
|
|
|
|
|
|
// Patch the receiver on the stack.
|
|
|
|
__ bind(&global);
|
|
|
|
__ ldr(r2, FieldMemOperand(r2, GlobalObject::kGlobalReceiverOffset));
|
|
|
|
__ str(r2, MemOperand(sp, argc * kPointerSize));
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-08-06 10:02:49 +00:00
|
|
|
// Invoke the function.
|
|
|
|
ParameterCount actual(argc);
|
2008-10-27 14:12:02 +00:00
|
|
|
__ bind(&invoke);
|
2008-08-06 10:02:49 +00:00
|
|
|
__ InvokeFunction(r1, actual, JUMP_FUNCTION);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-07 08:27:32 +00:00
|
|
|
void KeyedCallIC::GenerateMiss(MacroAssembler* masm, int argc) {
|
|
|
|
UNREACHABLE();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void KeyedCallIC::GenerateMegamorphic(MacroAssembler* masm, int argc) {
|
|
|
|
UNREACHABLE();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void KeyedCallIC::GenerateNormal(MacroAssembler* masm, int argc) {
|
|
|
|
UNREACHABLE();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
// Defined in ic.cc.
|
|
|
|
Object* LoadIC_Miss(Arguments args);
|
|
|
|
|
|
|
|
void LoadIC::GenerateMegamorphic(MacroAssembler* masm) {
|
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
2010-04-27 19:24:36 +00:00
|
|
|
// -- r0 : receiver
|
|
|
|
// -- sp[0] : receiver
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------
|
|
|
|
|
|
|
|
// Probe the stub cache.
|
2009-05-25 18:29:02 +00:00
|
|
|
Code::Flags flags = Code::ComputeFlags(Code::LOAD_IC,
|
|
|
|
NOT_IN_LOOP,
|
|
|
|
MONOMORPHIC);
|
2009-07-03 08:00:51 +00:00
|
|
|
StubCache::GenerateProbe(masm, flags, r0, r2, r3, no_reg);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Cache miss: Jump to runtime.
|
2010-02-08 16:08:26 +00:00
|
|
|
GenerateMiss(masm);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void LoadIC::GenerateNormal(MacroAssembler* masm) {
|
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
2010-04-27 19:24:36 +00:00
|
|
|
// -- r0 : receiver
|
|
|
|
// -- sp[0] : receiver
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------
|
2008-10-27 14:12:02 +00:00
|
|
|
Label miss, probe, global;
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Check that the receiver isn't a smi.
|
|
|
|
__ tst(r0, Operand(kSmiTagMask));
|
|
|
|
__ b(eq, &miss);
|
|
|
|
|
2009-06-10 11:42:13 +00:00
|
|
|
// Check that the receiver is a valid JS object. Put the map in r3.
|
|
|
|
__ CompareObjectType(r0, r3, r1, FIRST_JS_OBJECT_TYPE);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ b(lt, &miss);
|
|
|
|
// If this assert fails, we have to check upper bound too.
|
|
|
|
ASSERT(LAST_TYPE == JS_FUNCTION_TYPE);
|
|
|
|
|
|
|
|
// Check for access to global object (unlikely).
|
2008-10-21 20:11:50 +00:00
|
|
|
__ cmp(r1, Operand(JS_GLOBAL_PROXY_TYPE));
|
2008-07-03 15:10:15 +00:00
|
|
|
__ b(eq, &global);
|
|
|
|
|
2008-12-10 08:05:10 +00:00
|
|
|
// Check for non-global object that requires access check.
|
|
|
|
__ ldrb(r3, FieldMemOperand(r3, Map::kBitFieldOffset));
|
|
|
|
__ tst(r3, Operand(1 << Map::kIsAccessCheckNeeded));
|
|
|
|
__ b(ne, &miss);
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
__ bind(&probe);
|
2010-06-01 21:11:38 +00:00
|
|
|
GenerateDictionaryLoad(masm, &miss, r0, r2, r0, r1, r3, r4, CHECK_DICTIONARY);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
// Global object access: Check access rights.
|
|
|
|
__ bind(&global);
|
2008-10-21 20:11:50 +00:00
|
|
|
__ CheckAccessGlobalProxy(r0, r1, &miss);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ b(&probe);
|
|
|
|
|
2010-05-31 13:26:12 +00:00
|
|
|
// Cache miss: Jump to runtime.
|
2008-07-03 15:10:15 +00:00
|
|
|
__ bind(&miss);
|
2010-02-08 16:08:26 +00:00
|
|
|
GenerateMiss(masm);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void LoadIC::GenerateMiss(MacroAssembler* masm) {
|
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
2010-04-27 19:24:36 +00:00
|
|
|
// -- r0 : receiver
|
|
|
|
// -- sp[0] : receiver
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------
|
|
|
|
|
2010-04-27 19:24:36 +00:00
|
|
|
__ mov(r3, r0);
|
|
|
|
__ Push(r3, r2);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-08-13 09:32:07 +00:00
|
|
|
// Perform tail call to the entry.
|
2010-02-24 08:33:51 +00:00
|
|
|
ExternalReference ref = ExternalReference(IC_Utility(kLoadIC_Miss));
|
|
|
|
__ TailCallExternalReference(ref, 2, 1);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-04-27 11:16:05 +00:00
|
|
|
static inline bool IsInlinedICSite(Address address,
|
|
|
|
Address* inline_end_address) {
|
2010-04-23 07:42:45 +00:00
|
|
|
// If the instruction after the call site is not the pseudo instruction nop1
|
|
|
|
// then this is not related to an inlined in-object property load. The nop1
|
|
|
|
// instruction is located just after the call to the IC in the deferred code
|
|
|
|
// handling the miss in the inlined code. After the nop1 instruction there is
|
2010-04-26 11:41:39 +00:00
|
|
|
// a branch instruction for jumping back from the deferred code.
|
2010-04-22 07:18:30 +00:00
|
|
|
Address address_after_call = address + Assembler::kCallTargetAddressOffset;
|
|
|
|
Instr instr_after_call = Assembler::instr_at(address_after_call);
|
2010-04-28 11:14:31 +00:00
|
|
|
if (!Assembler::IsNop(instr_after_call, PROPERTY_ACCESS_INLINED)) {
|
2010-04-23 07:42:45 +00:00
|
|
|
return false;
|
|
|
|
}
|
2010-04-27 11:16:05 +00:00
|
|
|
Address address_after_nop = address_after_call + Assembler::kInstrSize;
|
|
|
|
Instr instr_after_nop = Assembler::instr_at(address_after_nop);
|
2010-05-27 13:48:52 +00:00
|
|
|
// There may be some reg-reg move and frame merging code to skip over before
|
|
|
|
// the branch back from the DeferredReferenceGetKeyedValue code to the inlined
|
|
|
|
// code.
|
|
|
|
while (!Assembler::IsBranch(instr_after_nop)) {
|
|
|
|
address_after_nop += Assembler::kInstrSize;
|
|
|
|
instr_after_nop = Assembler::instr_at(address_after_nop);
|
|
|
|
}
|
2010-04-22 07:18:30 +00:00
|
|
|
|
|
|
|
// Find the end of the inlined code for handling the load.
|
|
|
|
int b_offset =
|
2010-04-27 11:16:05 +00:00
|
|
|
Assembler::GetBranchOffset(instr_after_nop) + Assembler::kPcLoadDelta;
|
2010-04-22 07:18:30 +00:00
|
|
|
ASSERT(b_offset < 0); // Jumping back from deferred code.
|
2010-04-27 11:16:05 +00:00
|
|
|
*inline_end_address = address_after_nop + b_offset;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void LoadIC::ClearInlinedVersion(Address address) {
|
|
|
|
// Reset the map check of the inlined in-object property load (if present) to
|
|
|
|
// guarantee failure by holding an invalid map (the null value). The offset
|
|
|
|
// can be patched to anything.
|
|
|
|
PatchInlinedLoad(address, Heap::null_value(), 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool LoadIC::PatchInlinedLoad(Address address, Object* map, int offset) {
|
|
|
|
// Find the end of the inlined code for handling the load if this is an
|
|
|
|
// inlined IC call site.
|
|
|
|
Address inline_end_address;
|
|
|
|
if (!IsInlinedICSite(address, &inline_end_address)) return false;
|
2010-04-22 07:18:30 +00:00
|
|
|
|
|
|
|
// Patch the offset of the property load instruction (ldr r0, [r1, #+XXX]).
|
2010-04-27 11:16:05 +00:00
|
|
|
// The immediate must be representable in 12 bits.
|
2010-04-23 07:42:45 +00:00
|
|
|
ASSERT((JSObject::kMaxInstanceSize - JSObject::kHeaderSize) < (1 << 12));
|
2010-04-27 11:16:05 +00:00
|
|
|
Address ldr_property_instr_address =
|
|
|
|
inline_end_address - Assembler::kInstrSize;
|
2010-04-22 07:18:30 +00:00
|
|
|
ASSERT(Assembler::IsLdrRegisterImmediate(
|
|
|
|
Assembler::instr_at(ldr_property_instr_address)));
|
|
|
|
Instr ldr_property_instr = Assembler::instr_at(ldr_property_instr_address);
|
|
|
|
ldr_property_instr = Assembler::SetLdrRegisterImmediateOffset(
|
|
|
|
ldr_property_instr, offset - kHeapObjectTag);
|
|
|
|
Assembler::instr_at_put(ldr_property_instr_address, ldr_property_instr);
|
|
|
|
|
|
|
|
// Indicate that code has changed.
|
|
|
|
CPU::FlushICache(ldr_property_instr_address, 1 * Assembler::kInstrSize);
|
|
|
|
|
|
|
|
// Patch the map check.
|
2010-04-27 11:16:05 +00:00
|
|
|
Address ldr_map_instr_address =
|
|
|
|
inline_end_address - 4 * Assembler::kInstrSize;
|
2010-04-22 07:18:30 +00:00
|
|
|
Assembler::set_target_address_at(ldr_map_instr_address,
|
|
|
|
reinterpret_cast<Address>(map));
|
|
|
|
return true;
|
2009-04-28 10:53:47 +00:00
|
|
|
}
|
|
|
|
|
2010-04-22 07:18:30 +00:00
|
|
|
|
2010-04-27 11:16:05 +00:00
|
|
|
void KeyedLoadIC::ClearInlinedVersion(Address address) {
|
|
|
|
// Reset the map check of the inlined keyed load (if present) to
|
|
|
|
// guarantee failure by holding an invalid map (the null value).
|
|
|
|
PatchInlinedLoad(address, Heap::null_value());
|
|
|
|
}
|
2010-04-22 07:18:30 +00:00
|
|
|
|
|
|
|
|
2009-04-28 10:53:47 +00:00
|
|
|
bool KeyedLoadIC::PatchInlinedLoad(Address address, Object* map) {
|
2010-04-27 11:16:05 +00:00
|
|
|
Address inline_end_address;
|
|
|
|
if (!IsInlinedICSite(address, &inline_end_address)) return false;
|
|
|
|
|
|
|
|
// Patch the map check.
|
|
|
|
Address ldr_map_instr_address =
|
2010-05-10 10:45:18 +00:00
|
|
|
inline_end_address -
|
2010-05-18 06:57:12 +00:00
|
|
|
(CodeGenerator::kInlinedKeyedLoadInstructionsAfterPatch *
|
|
|
|
Assembler::kInstrSize);
|
2010-04-27 11:16:05 +00:00
|
|
|
Assembler::set_target_address_at(ldr_map_instr_address,
|
|
|
|
reinterpret_cast<Address>(map));
|
|
|
|
return true;
|
2009-04-28 10:53:47 +00:00
|
|
|
}
|
2008-12-22 12:56:32 +00:00
|
|
|
|
2010-04-22 07:18:30 +00:00
|
|
|
|
2010-04-28 11:14:31 +00:00
|
|
|
void KeyedStoreIC::ClearInlinedVersion(Address address) {
|
|
|
|
// Insert null as the elements map to check for. This will make
|
|
|
|
// sure that the elements fast-case map check fails so that control
|
|
|
|
// flows to the IC instead of the inlined version.
|
|
|
|
PatchInlinedStore(address, Heap::null_value());
|
|
|
|
}
|
2010-04-22 07:18:30 +00:00
|
|
|
|
|
|
|
|
2010-04-28 11:14:31 +00:00
|
|
|
void KeyedStoreIC::RestoreInlinedVersion(Address address) {
|
|
|
|
// Restore the fast-case elements map check so that the inlined
|
|
|
|
// version can be used again.
|
|
|
|
PatchInlinedStore(address, Heap::fixed_array_map());
|
|
|
|
}
|
2010-04-22 07:18:30 +00:00
|
|
|
|
|
|
|
|
2009-06-12 11:24:13 +00:00
|
|
|
bool KeyedStoreIC::PatchInlinedStore(Address address, Object* map) {
|
2010-04-28 11:14:31 +00:00
|
|
|
// Find the end of the inlined code for handling the store if this is an
|
|
|
|
// inlined IC call site.
|
|
|
|
Address inline_end_address;
|
|
|
|
if (!IsInlinedICSite(address, &inline_end_address)) return false;
|
|
|
|
|
|
|
|
// Patch the map check.
|
|
|
|
Address ldr_map_instr_address =
|
2010-05-18 06:57:12 +00:00
|
|
|
inline_end_address -
|
|
|
|
(CodeGenerator::kInlinedKeyedStoreInstructionsAfterPatch *
|
|
|
|
Assembler::kInstrSize);
|
2010-04-28 11:14:31 +00:00
|
|
|
Assembler::set_target_address_at(ldr_map_instr_address,
|
|
|
|
reinterpret_cast<Address>(map));
|
|
|
|
return true;
|
2009-06-12 11:24:13 +00:00
|
|
|
}
|
|
|
|
|
2008-12-22 12:56:32 +00:00
|
|
|
|
2008-11-13 01:18:31 +00:00
|
|
|
Object* KeyedLoadIC_Miss(Arguments args);
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) {
|
2010-02-08 16:08:26 +00:00
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- lr : return address
|
2010-05-05 06:40:14 +00:00
|
|
|
// -- r0 : key
|
2010-05-07 10:16:11 +00:00
|
|
|
// -- r1 : receiver
|
2010-02-08 16:08:26 +00:00
|
|
|
// -----------------------------------
|
|
|
|
|
2010-05-05 06:40:14 +00:00
|
|
|
__ Push(r1, r0);
|
2010-02-08 16:08:26 +00:00
|
|
|
|
2010-02-24 08:33:51 +00:00
|
|
|
ExternalReference ref = ExternalReference(IC_Utility(kKeyedLoadIC_Miss));
|
|
|
|
__ TailCallExternalReference(ref, 2, 1);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2010-02-08 16:08:26 +00:00
|
|
|
void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
|
2008-11-13 01:18:31 +00:00
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- lr : return address
|
2010-05-05 06:40:14 +00:00
|
|
|
// -- r0 : key
|
2010-05-07 10:16:11 +00:00
|
|
|
// -- r1 : receiver
|
2010-01-28 12:41:27 +00:00
|
|
|
// -----------------------------------
|
|
|
|
|
2010-05-05 06:40:14 +00:00
|
|
|
__ Push(r1, r0);
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2010-06-01 21:11:38 +00:00
|
|
|
__ TailCallRuntime(Runtime::kKeyedGetProperty, 2, 1);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) {
|
2008-11-13 01:18:31 +00:00
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- lr : return address
|
2010-05-05 06:40:14 +00:00
|
|
|
// -- r0 : key
|
2010-05-07 10:16:11 +00:00
|
|
|
// -- r1 : receiver
|
2010-01-28 12:41:27 +00:00
|
|
|
// -----------------------------------
|
2010-06-01 21:11:38 +00:00
|
|
|
Label slow, check_string, index_smi, index_string;
|
|
|
|
Label check_pixel_array, probe_dictionary, check_number_dictionary;
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
Register key = r0;
|
|
|
|
Register receiver = r1;
|
2008-11-20 16:59:00 +00:00
|
|
|
|
2010-02-16 14:13:21 +00:00
|
|
|
// Check that the object isn't a smi.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ BranchOnSmi(receiver, &slow);
|
2008-12-10 08:05:10 +00:00
|
|
|
// Get the map of the receiver.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldr(r2, FieldMemOperand(receiver, HeapObject::kMapOffset));
|
2010-01-22 13:56:12 +00:00
|
|
|
// Check bit field.
|
2008-12-10 08:05:10 +00:00
|
|
|
__ ldrb(r3, FieldMemOperand(r2, Map::kBitFieldOffset));
|
2010-01-22 13:56:12 +00:00
|
|
|
__ tst(r3, Operand(kSlowCaseBitFieldMask));
|
2008-12-10 08:05:10 +00:00
|
|
|
__ b(ne, &slow);
|
2008-11-20 16:59:00 +00:00
|
|
|
// Check that the object is some kind of JS object EXCEPT JS Value type.
|
|
|
|
// In the case that the object is a value-wrapper object,
|
|
|
|
// we enter the runtime system to make sure that indexing into string
|
|
|
|
// objects work as intended.
|
|
|
|
ASSERT(JS_OBJECT_TYPE > JS_VALUE_TYPE);
|
|
|
|
__ ldrb(r2, FieldMemOperand(r2, Map::kInstanceTypeOffset));
|
|
|
|
__ cmp(r2, Operand(JS_OBJECT_TYPE));
|
|
|
|
__ b(lt, &slow);
|
|
|
|
|
2010-02-16 14:13:21 +00:00
|
|
|
// Check that the key is a smi.
|
2010-06-01 21:11:38 +00:00
|
|
|
__ BranchOnNotSmi(key, &check_string);
|
|
|
|
__ bind(&index_smi);
|
|
|
|
// Now the key is known to be a smi. This place is also jumped to from below
|
|
|
|
// where a numeric string is converted to a smi.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldr(r4, FieldMemOperand(receiver, JSObject::kElementsOffset));
|
2008-11-20 16:59:00 +00:00
|
|
|
// Check that the object is in fast mode (not dictionary).
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldr(r3, FieldMemOperand(r4, HeapObject::kMapOffset));
|
2009-08-24 11:57:57 +00:00
|
|
|
__ LoadRoot(ip, Heap::kFixedArrayMapRootIndex);
|
|
|
|
__ cmp(r3, ip);
|
2010-03-26 09:05:22 +00:00
|
|
|
__ b(ne, &check_pixel_array);
|
2008-11-20 16:59:00 +00:00
|
|
|
// Check that the key (index) is within bounds.
|
2010-05-27 12:30:45 +00:00
|
|
|
__ ldr(r3, FieldMemOperand(r4, FixedArray::kLengthOffset));
|
|
|
|
__ cmp(key, Operand(r3));
|
2010-04-23 12:57:41 +00:00
|
|
|
__ b(hs, &slow);
|
2010-03-26 09:05:22 +00:00
|
|
|
// Fast case: Do the load.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ add(r3, r4, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
|
2010-05-27 12:30:45 +00:00
|
|
|
// The key is a smi.
|
|
|
|
ASSERT(kSmiTag == 0 && kSmiTagSize < kPointerSizeLog2);
|
|
|
|
__ ldr(r2, MemOperand(r3, key, LSL, kPointerSizeLog2 - kSmiTagSize));
|
2010-03-26 09:05:22 +00:00
|
|
|
__ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ cmp(r2, ip);
|
2010-03-26 09:05:22 +00:00
|
|
|
// In case the loaded value is the_hole we have to consult GetProperty
|
|
|
|
// to ensure the prototype chain is searched.
|
|
|
|
__ b(eq, &slow);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ mov(r0, r2);
|
2010-06-01 21:11:38 +00:00
|
|
|
__ IncrementCounter(&Counters::keyed_load_generic_smi, 1, r2, r3);
|
2010-03-26 09:05:22 +00:00
|
|
|
__ Ret();
|
2008-11-20 16:59:00 +00:00
|
|
|
|
2010-03-23 13:38:04 +00:00
|
|
|
// Check whether the elements is a pixel array.
|
2010-05-07 10:16:11 +00:00
|
|
|
// r0: key
|
|
|
|
// r3: elements map
|
|
|
|
// r4: elements
|
2010-03-23 13:38:04 +00:00
|
|
|
__ bind(&check_pixel_array);
|
|
|
|
__ LoadRoot(ip, Heap::kPixelArrayMapRootIndex);
|
|
|
|
__ cmp(r3, ip);
|
2010-03-26 09:05:22 +00:00
|
|
|
__ b(ne, &check_number_dictionary);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldr(ip, FieldMemOperand(r4, PixelArray::kLengthOffset));
|
2010-05-27 12:30:45 +00:00
|
|
|
__ mov(r2, Operand(key, ASR, kSmiTagSize));
|
2010-05-07 10:16:11 +00:00
|
|
|
__ cmp(r2, ip);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(hs, &slow);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldr(ip, FieldMemOperand(r4, PixelArray::kExternalPointerOffset));
|
|
|
|
__ ldrb(r2, MemOperand(ip, r2));
|
|
|
|
__ mov(r0, Operand(r2, LSL, kSmiTagSize)); // Tag result as smi.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
|
2010-03-26 09:05:22 +00:00
|
|
|
__ bind(&check_number_dictionary);
|
|
|
|
// Check whether the elements is a number dictionary.
|
2010-05-07 10:16:11 +00:00
|
|
|
// r0: key
|
|
|
|
// r3: elements map
|
|
|
|
// r4: elements
|
2010-03-26 09:05:22 +00:00
|
|
|
__ LoadRoot(ip, Heap::kHashTableMapRootIndex);
|
|
|
|
__ cmp(r3, ip);
|
|
|
|
__ b(ne, &slow);
|
2010-05-27 12:30:45 +00:00
|
|
|
__ mov(r2, Operand(r0, ASR, kSmiTagSize));
|
2010-05-07 10:16:11 +00:00
|
|
|
GenerateNumberDictionaryLoad(masm, &slow, r4, r0, r2, r3, r5);
|
2010-03-26 09:05:22 +00:00
|
|
|
__ Ret();
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
// Slow case, key and receiver still in r0 and r1.
|
2008-11-20 16:59:00 +00:00
|
|
|
__ bind(&slow);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ IncrementCounter(&Counters::keyed_load_generic_slow, 1, r2, r3);
|
2010-02-08 16:08:26 +00:00
|
|
|
GenerateRuntimeGetProperty(masm);
|
2010-06-01 21:11:38 +00:00
|
|
|
|
|
|
|
__ bind(&check_string);
|
|
|
|
// The key is not a smi.
|
|
|
|
// Is it a string?
|
|
|
|
// r0: key
|
|
|
|
// r1: receiver
|
|
|
|
__ CompareObjectType(r0, r2, r3, FIRST_NONSTRING_TYPE);
|
|
|
|
__ b(ge, &slow);
|
|
|
|
|
|
|
|
// Is the string an array index, with cached numeric value?
|
|
|
|
__ ldr(r3, FieldMemOperand(r0, String::kHashFieldOffset));
|
2010-06-07 09:36:30 +00:00
|
|
|
__ tst(r3, Operand(String::kContainsCachedArrayIndexMask));
|
|
|
|
__ b(eq, &index_string);
|
2010-06-01 21:11:38 +00:00
|
|
|
|
|
|
|
// Is the string a symbol?
|
|
|
|
// r2: key map
|
|
|
|
__ ldrb(r3, FieldMemOperand(r2, Map::kInstanceTypeOffset));
|
|
|
|
ASSERT(kSymbolTag != 0);
|
|
|
|
__ tst(r3, Operand(kIsSymbolMask));
|
|
|
|
__ b(eq, &slow);
|
|
|
|
|
|
|
|
// If the receiver is a fast-case object, check the keyed lookup
|
|
|
|
// cache. Otherwise probe the dictionary.
|
|
|
|
__ ldr(r3, FieldMemOperand(r1, JSObject::kPropertiesOffset));
|
|
|
|
__ ldr(r3, FieldMemOperand(r3, HeapObject::kMapOffset));
|
|
|
|
__ LoadRoot(ip, Heap::kHashTableMapRootIndex);
|
|
|
|
__ cmp(r3, ip);
|
|
|
|
__ b(eq, &probe_dictionary);
|
|
|
|
|
|
|
|
// Load the map of the receiver, compute the keyed lookup cache hash
|
|
|
|
// based on 32 bits of the map pointer and the string hash.
|
|
|
|
__ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset));
|
|
|
|
__ mov(r3, Operand(r2, ASR, KeyedLookupCache::kMapHashShift));
|
|
|
|
__ ldr(r4, FieldMemOperand(r0, String::kHashFieldOffset));
|
|
|
|
__ eor(r3, r3, Operand(r4, ASR, String::kHashShift));
|
|
|
|
__ and_(r3, r3, Operand(KeyedLookupCache::kCapacityMask));
|
|
|
|
|
|
|
|
// Load the key (consisting of map and symbol) from the cache and
|
|
|
|
// check for match.
|
|
|
|
ExternalReference cache_keys = ExternalReference::keyed_lookup_cache_keys();
|
|
|
|
__ mov(r4, Operand(cache_keys));
|
|
|
|
__ add(r4, r4, Operand(r3, LSL, kPointerSizeLog2 + 1));
|
|
|
|
__ ldr(r5, MemOperand(r4, kPointerSize, PostIndex)); // Move r4 to symbol.
|
|
|
|
__ cmp(r2, r5);
|
|
|
|
__ b(ne, &slow);
|
|
|
|
__ ldr(r5, MemOperand(r4));
|
|
|
|
__ cmp(r0, r5);
|
|
|
|
__ b(ne, &slow);
|
|
|
|
|
|
|
|
// Get field offset and check that it is an in-object property.
|
|
|
|
// r0 : key
|
|
|
|
// r1 : receiver
|
|
|
|
// r2 : receiver's map
|
|
|
|
// r3 : lookup cache index
|
|
|
|
ExternalReference cache_field_offsets
|
|
|
|
= ExternalReference::keyed_lookup_cache_field_offsets();
|
|
|
|
__ mov(r4, Operand(cache_field_offsets));
|
|
|
|
__ ldr(r5, MemOperand(r4, r3, LSL, kPointerSizeLog2));
|
|
|
|
__ ldrb(r6, FieldMemOperand(r2, Map::kInObjectPropertiesOffset));
|
|
|
|
__ cmp(r5, r6);
|
|
|
|
__ b(ge, &slow);
|
|
|
|
|
|
|
|
// Load in-object property.
|
|
|
|
__ sub(r5, r5, r6); // Index from end of object.
|
|
|
|
__ ldrb(r6, FieldMemOperand(r2, Map::kInstanceSizeOffset));
|
|
|
|
__ add(r6, r6, r5); // Index from start of object.
|
|
|
|
__ sub(r1, r1, Operand(kHeapObjectTag)); // Remove the heap tag.
|
|
|
|
__ ldr(r0, MemOperand(r1, r6, LSL, kPointerSizeLog2));
|
|
|
|
__ IncrementCounter(&Counters::keyed_load_generic_lookup_cache, 1, r2, r3);
|
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
// Do a quick inline probe of the receiver's dictionary, if it
|
|
|
|
// exists.
|
|
|
|
__ bind(&probe_dictionary);
|
|
|
|
// Load the property to r0.
|
|
|
|
GenerateDictionaryLoad(
|
|
|
|
masm, &slow, r1, r0, r0, r2, r3, r4, DICTIONARY_CHECK_DONE);
|
|
|
|
__ IncrementCounter(&Counters::keyed_load_generic_symbol, 1, r2, r3);
|
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
__ b(&slow);
|
|
|
|
// If the hash field contains an array index pick it out. The assert checks
|
|
|
|
// that the constants for the maximum number of digits for an array index
|
|
|
|
// cached in the hash field and the number of bits reserved for it does not
|
|
|
|
// conflict.
|
|
|
|
ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) <
|
|
|
|
(1 << String::kArrayIndexValueBits));
|
|
|
|
__ bind(&index_string);
|
|
|
|
// r0: key (string)
|
|
|
|
// r1: receiver
|
|
|
|
// r3: hash field
|
|
|
|
// We want the smi-tagged index in r0. kArrayIndexValueMask has zeros in
|
|
|
|
// the low kHashShift bits.
|
|
|
|
ASSERT(String::kHashShift >= kSmiTagSize);
|
|
|
|
__ and_(r3, r3, Operand(String::kArrayIndexValueMask));
|
|
|
|
// Here we actually clobber the key (r0) which will be used if calling into
|
|
|
|
// runtime later. However as the new key is the numeric value of a string key
|
|
|
|
// there is no difference in using either key.
|
|
|
|
__ mov(r0, Operand(r3, ASR, String::kHashShift - kSmiTagSize));
|
|
|
|
// Now jump to the place where smi keys are handled.
|
|
|
|
__ jmp(&index_smi);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2010-01-07 11:38:43 +00:00
|
|
|
void KeyedLoadIC::GenerateString(MacroAssembler* masm) {
|
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- lr : return address
|
2010-05-26 14:23:19 +00:00
|
|
|
// -- r0 : key (index)
|
2010-05-07 10:16:11 +00:00
|
|
|
// -- r1 : receiver
|
2010-01-28 12:41:27 +00:00
|
|
|
// -----------------------------------
|
2010-05-04 09:32:07 +00:00
|
|
|
Label miss;
|
|
|
|
Label index_out_of_range;
|
2010-04-06 14:16:39 +00:00
|
|
|
|
2010-05-26 14:23:19 +00:00
|
|
|
Register receiver = r1;
|
2010-05-04 09:32:07 +00:00
|
|
|
Register index = r0;
|
2010-05-26 14:23:19 +00:00
|
|
|
Register scratch1 = r2;
|
|
|
|
Register scratch2 = r3;
|
|
|
|
Register result = r0;
|
|
|
|
|
|
|
|
StringCharAtGenerator char_at_generator(receiver,
|
|
|
|
index,
|
|
|
|
scratch1,
|
|
|
|
scratch2,
|
|
|
|
result,
|
|
|
|
&miss, // When not a string.
|
|
|
|
&miss, // When not a number.
|
|
|
|
&index_out_of_range,
|
|
|
|
STRING_INDEX_IS_ARRAY_INDEX);
|
|
|
|
char_at_generator.GenerateFast(masm);
|
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
ICRuntimeCallHelper call_helper;
|
|
|
|
char_at_generator.GenerateSlow(masm, call_helper);
|
2010-04-06 14:16:39 +00:00
|
|
|
|
2010-05-04 09:32:07 +00:00
|
|
|
__ bind(&index_out_of_range);
|
|
|
|
__ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
|
|
|
|
__ Ret();
|
2010-04-06 14:16:39 +00:00
|
|
|
|
|
|
|
__ bind(&miss);
|
2010-05-26 14:23:19 +00:00
|
|
|
GenerateMiss(masm);
|
2010-01-07 11:38:43 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-03-23 13:38:04 +00:00
|
|
|
// Convert unsigned integer with specified number of leading zeroes in binary
|
|
|
|
// representation to IEEE 754 double.
|
|
|
|
// Integer to convert is passed in register hiword.
|
|
|
|
// Resulting double is returned in registers hiword:loword.
|
|
|
|
// This functions does not work correctly for 0.
|
|
|
|
static void GenerateUInt2Double(MacroAssembler* masm,
|
|
|
|
Register hiword,
|
|
|
|
Register loword,
|
|
|
|
Register scratch,
|
|
|
|
int leading_zeroes) {
|
|
|
|
const int meaningful_bits = kBitsPerInt - leading_zeroes - 1;
|
|
|
|
const int biased_exponent = HeapNumber::kExponentBias + meaningful_bits;
|
|
|
|
|
|
|
|
const int mantissa_shift_for_hi_word =
|
|
|
|
meaningful_bits - HeapNumber::kMantissaBitsInTopWord;
|
|
|
|
|
|
|
|
const int mantissa_shift_for_lo_word =
|
|
|
|
kBitsPerInt - mantissa_shift_for_hi_word;
|
|
|
|
|
|
|
|
__ mov(scratch, Operand(biased_exponent << HeapNumber::kExponentShift));
|
|
|
|
if (mantissa_shift_for_hi_word > 0) {
|
|
|
|
__ mov(loword, Operand(hiword, LSL, mantissa_shift_for_lo_word));
|
|
|
|
__ orr(hiword, scratch, Operand(hiword, LSR, mantissa_shift_for_hi_word));
|
|
|
|
} else {
|
|
|
|
__ mov(loword, Operand(0));
|
|
|
|
__ orr(hiword, scratch, Operand(hiword, LSL, mantissa_shift_for_hi_word));
|
|
|
|
}
|
|
|
|
|
|
|
|
// If least significant bit of biased exponent was not 1 it was corrupted
|
|
|
|
// by most significant bit of mantissa so we should fix that.
|
|
|
|
if (!(biased_exponent & 1)) {
|
|
|
|
__ bic(hiword, hiword, Operand(1 << HeapNumber::kExponentShift));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-10-20 15:26:17 +00:00
|
|
|
void KeyedLoadIC::GenerateExternalArray(MacroAssembler* masm,
|
|
|
|
ExternalArrayType array_type) {
|
2010-03-23 13:38:04 +00:00
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- lr : return address
|
2010-05-05 06:40:14 +00:00
|
|
|
// -- r0 : key
|
2010-05-07 10:16:11 +00:00
|
|
|
// -- r1 : receiver
|
2010-03-23 13:38:04 +00:00
|
|
|
// -----------------------------------
|
|
|
|
Label slow, failed_allocation;
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
Register key = r0;
|
|
|
|
Register receiver = r1;
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
// Check that the object isn't a smi
|
2010-05-07 10:16:11 +00:00
|
|
|
__ BranchOnSmi(receiver, &slow);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
// Check that the key is a smi.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ BranchOnNotSmi(key, &slow);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
// Check that the object is a JS object. Load map into r2.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ CompareObjectType(receiver, r2, r3, FIRST_JS_OBJECT_TYPE);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(lt, &slow);
|
|
|
|
|
|
|
|
// Check that the receiver does not require access checks. We need
|
|
|
|
// to check this explicitly since this generic stub does not perform
|
|
|
|
// map checks.
|
|
|
|
__ ldrb(r3, FieldMemOperand(r2, Map::kBitFieldOffset));
|
|
|
|
__ tst(r3, Operand(1 << Map::kIsAccessCheckNeeded));
|
|
|
|
__ b(ne, &slow);
|
|
|
|
|
|
|
|
// Check that the elements array is the appropriate type of
|
|
|
|
// ExternalArray.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldr(r3, FieldMemOperand(receiver, JSObject::kElementsOffset));
|
|
|
|
__ ldr(r2, FieldMemOperand(r3, HeapObject::kMapOffset));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ LoadRoot(ip, Heap::RootIndexForExternalArrayType(array_type));
|
|
|
|
__ cmp(r2, ip);
|
|
|
|
__ b(ne, &slow);
|
|
|
|
|
|
|
|
// Check that the index is in range.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldr(ip, FieldMemOperand(r3, ExternalArray::kLengthOffset));
|
|
|
|
__ cmp(ip, Operand(key, ASR, kSmiTagSize));
|
2010-03-23 13:38:04 +00:00
|
|
|
// Unsigned comparison catches both negative and too-large values.
|
|
|
|
__ b(lo, &slow);
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
// r3: elements array
|
|
|
|
__ ldr(r3, FieldMemOperand(r3, ExternalArray::kExternalPointerOffset));
|
|
|
|
// r3: base pointer of external storage
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
// We are not untagging smi key and instead work with it
|
|
|
|
// as if it was premultiplied by 2.
|
|
|
|
ASSERT((kSmiTag == 0) && (kSmiTagSize == 1));
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
Register value = r2;
|
2010-03-23 13:38:04 +00:00
|
|
|
switch (array_type) {
|
|
|
|
case kExternalByteArray:
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldrsb(value, MemOperand(r3, key, LSR, 1));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalUnsignedByteArray:
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldrb(value, MemOperand(r3, key, LSR, 1));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalShortArray:
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldrsh(value, MemOperand(r3, key, LSL, 0));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalUnsignedShortArray:
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldrh(value, MemOperand(r3, key, LSL, 0));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalIntArray:
|
|
|
|
case kExternalUnsignedIntArray:
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldr(value, MemOperand(r3, key, LSL, 1));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalFloatArray:
|
|
|
|
if (CpuFeatures::IsSupported(VFP3)) {
|
|
|
|
CpuFeatures::Scope scope(VFP3);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ add(r2, r3, Operand(key, LSL, 1));
|
|
|
|
__ vldr(s0, r2, 0);
|
2010-03-23 13:38:04 +00:00
|
|
|
} else {
|
2010-05-07 10:16:11 +00:00
|
|
|
__ ldr(value, MemOperand(r3, key, LSL, 1));
|
2010-03-23 13:38:04 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// For integer array types:
|
2010-05-07 10:16:11 +00:00
|
|
|
// r2: value
|
2010-03-23 13:38:04 +00:00
|
|
|
// For floating-point array type
|
|
|
|
// s0: value (if VFP3 is supported)
|
2010-05-07 10:16:11 +00:00
|
|
|
// r2: value (if VFP3 is not supported)
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
if (array_type == kExternalIntArray) {
|
|
|
|
// For the Int and UnsignedInt array types, we need to see whether
|
|
|
|
// the value can be represented in a Smi. If not, we need to convert
|
|
|
|
// it to a HeapNumber.
|
|
|
|
Label box_int;
|
2010-05-07 10:16:11 +00:00
|
|
|
__ cmp(value, Operand(0xC0000000));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(mi, &box_int);
|
2010-05-07 10:16:11 +00:00
|
|
|
// Tag integer as smi and return it.
|
|
|
|
__ mov(r0, Operand(value, LSL, kSmiTagSize));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
__ bind(&box_int);
|
2010-05-07 10:16:11 +00:00
|
|
|
// Allocate a HeapNumber for the result and perform int-to-double
|
|
|
|
// conversion. Use r0 for result as key is not needed any more.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ AllocateHeapNumber(r0, r3, r4, &slow);
|
|
|
|
|
|
|
|
if (CpuFeatures::IsSupported(VFP3)) {
|
|
|
|
CpuFeatures::Scope scope(VFP3);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ vmov(s0, value);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ vcvt_f64_s32(d0, s0);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ sub(r3, r0, Operand(kHeapObjectTag));
|
|
|
|
__ vstr(d0, r3, HeapNumber::kValueOffset);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
} else {
|
2010-05-07 10:16:11 +00:00
|
|
|
WriteInt32ToHeapNumberStub stub(value, r0, r3);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ TailCallStub(&stub);
|
|
|
|
}
|
|
|
|
} else if (array_type == kExternalUnsignedIntArray) {
|
|
|
|
// The test is different for unsigned int values. Since we need
|
|
|
|
// the value to be in the range of a positive smi, we can't
|
|
|
|
// handle either of the top two bits being set in the value.
|
|
|
|
if (CpuFeatures::IsSupported(VFP3)) {
|
|
|
|
CpuFeatures::Scope scope(VFP3);
|
|
|
|
Label box_int, done;
|
2010-05-07 10:16:11 +00:00
|
|
|
__ tst(value, Operand(0xC0000000));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(ne, &box_int);
|
2010-05-07 10:16:11 +00:00
|
|
|
// Tag integer as smi and return it.
|
|
|
|
__ mov(r0, Operand(value, LSL, kSmiTagSize));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
__ bind(&box_int);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ vmov(s0, value);
|
|
|
|
// Allocate a HeapNumber for the result and perform int-to-double
|
|
|
|
// conversion. Don't use r0 and r1 as AllocateHeapNumber clobbers all
|
|
|
|
// registers - also when jumping due to exhausted young space.
|
|
|
|
__ AllocateHeapNumber(r2, r3, r4, &slow);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
__ vcvt_f64_u32(d0, s0);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ sub(r1, r2, Operand(kHeapObjectTag));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ vstr(d0, r1, HeapNumber::kValueOffset);
|
2010-05-07 10:16:11 +00:00
|
|
|
|
|
|
|
__ mov(r0, r2);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
} else {
|
|
|
|
// Check whether unsigned integer fits into smi.
|
|
|
|
Label box_int_0, box_int_1, done;
|
2010-05-07 10:16:11 +00:00
|
|
|
__ tst(value, Operand(0x80000000));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(ne, &box_int_0);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ tst(value, Operand(0x40000000));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(ne, &box_int_1);
|
|
|
|
// Tag integer as smi and return it.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ mov(r0, Operand(value, LSL, kSmiTagSize));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
Register hiword = value; // r2.
|
|
|
|
Register loword = r3;
|
|
|
|
|
2010-03-23 13:38:04 +00:00
|
|
|
__ bind(&box_int_0);
|
|
|
|
// Integer does not have leading zeros.
|
2010-05-07 10:16:11 +00:00
|
|
|
GenerateUInt2Double(masm, hiword, loword, r4, 0);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(&done);
|
|
|
|
|
|
|
|
__ bind(&box_int_1);
|
|
|
|
// Integer has one leading zero.
|
2010-05-07 10:16:11 +00:00
|
|
|
GenerateUInt2Double(masm, hiword, loword, r4, 1);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
__ bind(&done);
|
|
|
|
// Integer was converted to double in registers hiword:loword.
|
|
|
|
// Wrap it into a HeapNumber. Don't use r0 and r1 as AllocateHeapNumber
|
|
|
|
// clobbers all registers - also when jumping due to exhausted young
|
|
|
|
// space.
|
|
|
|
__ AllocateHeapNumber(r4, r5, r6, &slow);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
__ str(hiword, FieldMemOperand(r4, HeapNumber::kExponentOffset));
|
|
|
|
__ str(loword, FieldMemOperand(r4, HeapNumber::kMantissaOffset));
|
2010-03-23 13:38:04 +00:00
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
__ mov(r0, r4);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
}
|
|
|
|
} else if (array_type == kExternalFloatArray) {
|
|
|
|
// For the floating-point array type, we need to always allocate a
|
|
|
|
// HeapNumber.
|
|
|
|
if (CpuFeatures::IsSupported(VFP3)) {
|
|
|
|
CpuFeatures::Scope scope(VFP3);
|
2010-05-07 10:16:11 +00:00
|
|
|
// Allocate a HeapNumber for the result. Don't use r0 and r1 as
|
|
|
|
// AllocateHeapNumber clobbers all registers - also when jumping due to
|
|
|
|
// exhausted young space.
|
|
|
|
__ AllocateHeapNumber(r2, r3, r4, &slow);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ vcvt_f64_f32(d0, s0);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ sub(r1, r2, Operand(kHeapObjectTag));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ vstr(d0, r1, HeapNumber::kValueOffset);
|
2010-05-07 10:16:11 +00:00
|
|
|
|
|
|
|
__ mov(r0, r2);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
} else {
|
2010-05-07 10:16:11 +00:00
|
|
|
// Allocate a HeapNumber for the result. Don't use r0 and r1 as
|
|
|
|
// AllocateHeapNumber clobbers all registers - also when jumping due to
|
|
|
|
// exhausted young space.
|
|
|
|
__ AllocateHeapNumber(r3, r4, r5, &slow);
|
2010-03-23 13:38:04 +00:00
|
|
|
// VFP is not available, do manual single to double conversion.
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
// r2: floating point value (binary32)
|
|
|
|
// r3: heap number for result
|
2010-03-23 13:38:04 +00:00
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
// Extract mantissa to r0. OK to clobber r0 now as there are no jumps to
|
|
|
|
// the slow case from here.
|
|
|
|
__ and_(r0, value, Operand(kBinary32MantissaMask));
|
2010-03-23 13:38:04 +00:00
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
// Extract exponent to r1. OK to clobber r1 now as there are no jumps to
|
|
|
|
// the slow case from here.
|
|
|
|
__ mov(r1, Operand(value, LSR, kBinary32MantissaBits));
|
|
|
|
__ and_(r1, r1, Operand(kBinary32ExponentMask >> kBinary32MantissaBits));
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
Label exponent_rebiased;
|
2010-05-07 10:16:11 +00:00
|
|
|
__ teq(r1, Operand(0x00));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(eq, &exponent_rebiased);
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
__ teq(r1, Operand(0xff));
|
|
|
|
__ mov(r1, Operand(0x7ff), LeaveCC, eq);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(eq, &exponent_rebiased);
|
|
|
|
|
|
|
|
// Rebias exponent.
|
2010-05-07 10:16:11 +00:00
|
|
|
__ add(r1,
|
|
|
|
r1,
|
2010-03-23 13:38:04 +00:00
|
|
|
Operand(-kBinary32ExponentBias + HeapNumber::kExponentBias));
|
|
|
|
|
|
|
|
__ bind(&exponent_rebiased);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ and_(r2, value, Operand(kBinary32SignMask));
|
|
|
|
value = no_reg;
|
|
|
|
__ orr(r2, r2, Operand(r1, LSL, HeapNumber::kMantissaBitsInTopWord));
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
// Shift mantissa.
|
|
|
|
static const int kMantissaShiftForHiWord =
|
|
|
|
kBinary32MantissaBits - HeapNumber::kMantissaBitsInTopWord;
|
|
|
|
|
|
|
|
static const int kMantissaShiftForLoWord =
|
|
|
|
kBitsPerInt - kMantissaShiftForHiWord;
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
__ orr(r2, r2, Operand(r0, LSR, kMantissaShiftForHiWord));
|
|
|
|
__ mov(r0, Operand(r0, LSL, kMantissaShiftForLoWord));
|
|
|
|
|
|
|
|
__ str(r2, FieldMemOperand(r3, HeapNumber::kExponentOffset));
|
|
|
|
__ str(r0, FieldMemOperand(r3, HeapNumber::kMantissaOffset));
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
__ mov(r0, r3);
|
|
|
|
__ Ret();
|
|
|
|
}
|
|
|
|
|
|
|
|
} else {
|
2010-05-07 10:16:11 +00:00
|
|
|
// Tag integer as smi and return it.
|
|
|
|
__ mov(r0, Operand(value, LSL, kSmiTagSize));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
}
|
|
|
|
|
2010-05-07 10:16:11 +00:00
|
|
|
// Slow case, key and receiver still in r0 and r1.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ bind(&slow);
|
2010-05-07 10:16:11 +00:00
|
|
|
__ IncrementCounter(&Counters::keyed_load_external_array_slow, 1, r2, r3);
|
2010-03-23 13:38:04 +00:00
|
|
|
GenerateRuntimeGetProperty(masm);
|
2009-10-20 15:26:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-02-12 14:21:18 +00:00
|
|
|
void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) {
|
2010-02-16 14:13:21 +00:00
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- lr : return address
|
2010-05-05 06:40:14 +00:00
|
|
|
// -- r0 : key
|
2010-05-07 10:16:11 +00:00
|
|
|
// -- r1 : receiver
|
2010-02-16 14:13:21 +00:00
|
|
|
// -----------------------------------
|
|
|
|
Label slow;
|
|
|
|
|
|
|
|
// Check that the receiver isn't a smi.
|
|
|
|
__ BranchOnSmi(r1, &slow);
|
|
|
|
|
|
|
|
// Check that the key is a smi.
|
|
|
|
__ BranchOnNotSmi(r0, &slow);
|
|
|
|
|
|
|
|
// Get the map of the receiver.
|
|
|
|
__ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset));
|
|
|
|
|
|
|
|
// Check that it has indexed interceptor and access checks
|
|
|
|
// are not enabled for this object.
|
|
|
|
__ ldrb(r3, FieldMemOperand(r2, Map::kBitFieldOffset));
|
|
|
|
__ and_(r3, r3, Operand(kSlowCaseBitFieldMask));
|
|
|
|
__ cmp(r3, Operand(1 << Map::kHasIndexedInterceptor));
|
|
|
|
__ b(ne, &slow);
|
|
|
|
|
|
|
|
// Everything is fine, call runtime.
|
2010-04-26 14:25:29 +00:00
|
|
|
__ Push(r1, r0); // Receiver, key.
|
2010-02-16 14:13:21 +00:00
|
|
|
|
|
|
|
// Perform tail call to the entry.
|
2010-02-24 08:33:51 +00:00
|
|
|
__ TailCallExternalReference(ExternalReference(
|
2010-02-16 14:13:21 +00:00
|
|
|
IC_Utility(kKeyedLoadPropertyWithInterceptor)), 2, 1);
|
|
|
|
|
|
|
|
__ bind(&slow);
|
|
|
|
GenerateMiss(masm);
|
2010-02-12 14:21:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-02-08 16:08:26 +00:00
|
|
|
void KeyedStoreIC::GenerateMiss(MacroAssembler* masm) {
|
2008-11-13 01:18:31 +00:00
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- r0 : value
|
2010-05-18 06:57:12 +00:00
|
|
|
// -- r1 : key
|
|
|
|
// -- r2 : receiver
|
2008-11-13 01:18:31 +00:00
|
|
|
// -- lr : return address
|
2010-01-28 12:41:27 +00:00
|
|
|
// -----------------------------------
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Push receiver, key and value for runtime call.
|
|
|
|
__ Push(r2, r1, r0);
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2010-02-24 08:33:51 +00:00
|
|
|
ExternalReference ref = ExternalReference(IC_Utility(kKeyedStoreIC_Miss));
|
|
|
|
__ TailCallExternalReference(ref, 3, 1);
|
2010-02-08 16:08:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void KeyedStoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm) {
|
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- r0 : value
|
2010-05-18 06:57:12 +00:00
|
|
|
// -- r1 : key
|
|
|
|
// -- r2 : receiver
|
2010-02-08 16:08:26 +00:00
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
2010-05-18 06:57:12 +00:00
|
|
|
|
|
|
|
// Push receiver, key and value for runtime call.
|
|
|
|
__ Push(r2, r1, r0);
|
2010-02-08 16:08:26 +00:00
|
|
|
|
2010-02-24 08:33:51 +00:00
|
|
|
__ TailCallRuntime(Runtime::kSetProperty, 3, 1);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm) {
|
2008-11-13 01:18:31 +00:00
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- r0 : value
|
2010-05-18 06:57:12 +00:00
|
|
|
// -- r1 : key
|
|
|
|
// -- r2 : receiver
|
2008-11-13 01:18:31 +00:00
|
|
|
// -- lr : return address
|
2010-01-28 12:41:27 +00:00
|
|
|
// -----------------------------------
|
2010-05-18 06:57:12 +00:00
|
|
|
Label slow, fast, array, extra, check_pixel_array;
|
|
|
|
|
|
|
|
// Register usage.
|
|
|
|
Register value = r0;
|
|
|
|
Register key = r1;
|
|
|
|
Register receiver = r2;
|
|
|
|
Register elements = r3; // Elements array of the receiver.
|
|
|
|
// r4 and r5 are used as general scratch registers.
|
2010-01-28 12:41:27 +00:00
|
|
|
|
2008-11-20 16:59:00 +00:00
|
|
|
// Check that the key is a smi.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ tst(key, Operand(kSmiTagMask));
|
2008-11-20 16:59:00 +00:00
|
|
|
__ b(ne, &slow);
|
|
|
|
// Check that the object isn't a smi.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ tst(receiver, Operand(kSmiTagMask));
|
2008-11-20 16:59:00 +00:00
|
|
|
__ b(eq, &slow);
|
2008-12-10 08:05:10 +00:00
|
|
|
// Get the map of the object.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ ldr(r4, FieldMemOperand(receiver, HeapObject::kMapOffset));
|
2008-12-10 08:05:10 +00:00
|
|
|
// Check that the receiver does not require access checks. We need
|
|
|
|
// to do this because this generic stub does not perform map checks.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ ldrb(ip, FieldMemOperand(r4, Map::kBitFieldOffset));
|
2008-12-10 08:05:10 +00:00
|
|
|
__ tst(ip, Operand(1 << Map::kIsAccessCheckNeeded));
|
|
|
|
__ b(ne, &slow);
|
2008-11-20 16:59:00 +00:00
|
|
|
// Check if the object is a JS array or not.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ ldrb(r4, FieldMemOperand(r4, Map::kInstanceTypeOffset));
|
|
|
|
__ cmp(r4, Operand(JS_ARRAY_TYPE));
|
2008-11-20 16:59:00 +00:00
|
|
|
__ b(eq, &array);
|
|
|
|
// Check that the object is some kind of JS object.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ cmp(r4, Operand(FIRST_JS_OBJECT_TYPE));
|
2008-11-20 16:59:00 +00:00
|
|
|
__ b(lt, &slow);
|
|
|
|
|
|
|
|
// Object case: Check key against length in the elements array.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset));
|
2008-11-20 16:59:00 +00:00
|
|
|
// Check that the object is in fast mode (not dictionary).
|
2010-05-18 06:57:12 +00:00
|
|
|
__ ldr(r4, FieldMemOperand(elements, HeapObject::kMapOffset));
|
2009-08-24 11:57:57 +00:00
|
|
|
__ LoadRoot(ip, Heap::kFixedArrayMapRootIndex);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ cmp(r4, ip);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(ne, &check_pixel_array);
|
2010-05-27 12:30:45 +00:00
|
|
|
// Check array bounds. Both the key and the length of FixedArray are smis.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ ldr(ip, FieldMemOperand(elements, FixedArray::kLengthOffset));
|
2010-05-27 12:30:45 +00:00
|
|
|
__ cmp(key, Operand(ip));
|
2008-11-20 16:59:00 +00:00
|
|
|
__ b(lo, &fast);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Slow case, handle jump to runtime.
|
2008-11-20 16:59:00 +00:00
|
|
|
__ bind(&slow);
|
2010-05-18 06:57:12 +00:00
|
|
|
// Entry registers are intact.
|
|
|
|
// r0: value.
|
|
|
|
// r1: key.
|
|
|
|
// r2: receiver.
|
2010-02-08 16:08:26 +00:00
|
|
|
GenerateRuntimeSetProperty(masm);
|
2008-11-20 16:59:00 +00:00
|
|
|
|
2010-03-23 13:38:04 +00:00
|
|
|
// Check whether the elements is a pixel array.
|
2010-05-18 06:57:12 +00:00
|
|
|
// r4: elements map.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ bind(&check_pixel_array);
|
|
|
|
__ LoadRoot(ip, Heap::kPixelArrayMapRootIndex);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ cmp(r4, ip);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(ne, &slow);
|
|
|
|
// Check that the value is a smi. If a conversion is needed call into the
|
|
|
|
// runtime to convert and clamp.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ BranchOnNotSmi(value, &slow);
|
|
|
|
__ mov(r4, Operand(key, ASR, kSmiTagSize)); // Untag the key.
|
|
|
|
__ ldr(ip, FieldMemOperand(elements, PixelArray::kLengthOffset));
|
|
|
|
__ cmp(r4, Operand(ip));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(hs, &slow);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ mov(r5, Operand(value, ASR, kSmiTagSize)); // Untag the value.
|
2010-03-23 13:38:04 +00:00
|
|
|
{ // Clamp the value to [0..255].
|
|
|
|
Label done;
|
2010-05-18 06:57:12 +00:00
|
|
|
__ tst(r5, Operand(0xFFFFFF00));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(eq, &done);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ mov(r5, Operand(0), LeaveCC, mi); // 0 if negative.
|
|
|
|
__ mov(r5, Operand(255), LeaveCC, pl); // 255 if positive.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ bind(&done);
|
|
|
|
}
|
2010-05-18 06:57:12 +00:00
|
|
|
// Get the pointer to the external array. This clobbers elements.
|
|
|
|
__ ldr(elements,
|
|
|
|
FieldMemOperand(elements, PixelArray::kExternalPointerOffset));
|
|
|
|
__ strb(r5, MemOperand(elements, r4)); // Elements is now external array.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
|
2008-11-20 16:59:00 +00:00
|
|
|
// Extra capacity case: Check if there is extra capacity to
|
|
|
|
// perform the store and update the length. Used for adding one
|
|
|
|
// element to the array by writing to array[array.length].
|
|
|
|
__ bind(&extra);
|
2010-05-18 06:57:12 +00:00
|
|
|
// Condition code from comparing key and array length is still available.
|
|
|
|
__ b(ne, &slow); // Only support writing to writing to array[array.length].
|
|
|
|
// Check for room in the elements backing store.
|
2010-05-27 12:30:45 +00:00
|
|
|
// Both the key and the length of FixedArray are smis.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ ldr(ip, FieldMemOperand(elements, FixedArray::kLengthOffset));
|
2010-05-27 12:30:45 +00:00
|
|
|
__ cmp(key, Operand(ip));
|
2008-11-20 16:59:00 +00:00
|
|
|
__ b(hs, &slow);
|
2010-05-18 06:57:12 +00:00
|
|
|
// Calculate key + 1 as smi.
|
|
|
|
ASSERT_EQ(0, kSmiTag);
|
|
|
|
__ add(r4, key, Operand(Smi::FromInt(1)));
|
|
|
|
__ str(r4, FieldMemOperand(receiver, JSArray::kLengthOffset));
|
2008-11-20 16:59:00 +00:00
|
|
|
__ b(&fast);
|
|
|
|
|
|
|
|
// Array case: Get the length and the elements array from the JS
|
|
|
|
// array. Check that the array is in fast mode; if it is the
|
|
|
|
// length is always a smi.
|
|
|
|
__ bind(&array);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset));
|
|
|
|
__ ldr(r4, FieldMemOperand(elements, HeapObject::kMapOffset));
|
2009-08-24 11:57:57 +00:00
|
|
|
__ LoadRoot(ip, Heap::kFixedArrayMapRootIndex);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ cmp(r4, ip);
|
2009-07-28 08:43:51 +00:00
|
|
|
__ b(ne, &slow);
|
2008-11-20 16:59:00 +00:00
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Check the key against the length in the array.
|
|
|
|
__ ldr(ip, FieldMemOperand(receiver, JSArray::kLengthOffset));
|
|
|
|
__ cmp(key, Operand(ip));
|
2008-11-20 16:59:00 +00:00
|
|
|
__ b(hs, &extra);
|
2010-05-18 06:57:12 +00:00
|
|
|
// Fall through to fast case.
|
2008-11-20 16:59:00 +00:00
|
|
|
|
|
|
|
__ bind(&fast);
|
2010-05-18 06:57:12 +00:00
|
|
|
// Fast case, store the value to the elements backing store.
|
|
|
|
__ add(r5, elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
|
|
|
|
__ add(r5, r5, Operand(key, LSL, kPointerSizeLog2 - kSmiTagSize));
|
|
|
|
__ str(value, MemOperand(r5));
|
2008-11-20 16:59:00 +00:00
|
|
|
// Skip write barrier if the written value is a smi.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ tst(value, Operand(kSmiTagMask));
|
|
|
|
__ Ret(eq);
|
2008-11-20 16:59:00 +00:00
|
|
|
// Update write barrier for the elements array address.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ sub(r4, r5, Operand(elements));
|
|
|
|
__ RecordWrite(elements, r4, r5);
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2008-11-20 16:59:00 +00:00
|
|
|
__ Ret();
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2010-03-23 13:38:04 +00:00
|
|
|
// Convert int passed in register ival to IEE 754 single precision
|
|
|
|
// floating point value and store it into register fval.
|
|
|
|
// If VFP3 is available use it for conversion.
|
|
|
|
static void ConvertIntToFloat(MacroAssembler* masm,
|
|
|
|
Register ival,
|
|
|
|
Register fval,
|
|
|
|
Register scratch1,
|
|
|
|
Register scratch2) {
|
|
|
|
if (CpuFeatures::IsSupported(VFP3)) {
|
|
|
|
CpuFeatures::Scope scope(VFP3);
|
|
|
|
__ vmov(s0, ival);
|
|
|
|
__ vcvt_f32_s32(s0, s0);
|
|
|
|
__ vmov(fval, s0);
|
|
|
|
} else {
|
|
|
|
Label not_special, done;
|
|
|
|
// Move sign bit from source to destination. This works because the sign
|
|
|
|
// bit in the exponent word of the double has the same position and polarity
|
|
|
|
// as the 2's complement sign bit in a Smi.
|
|
|
|
ASSERT(kBinary32SignMask == 0x80000000u);
|
|
|
|
|
|
|
|
__ and_(fval, ival, Operand(kBinary32SignMask), SetCC);
|
|
|
|
// Negate value if it is negative.
|
|
|
|
__ rsb(ival, ival, Operand(0), LeaveCC, ne);
|
|
|
|
|
|
|
|
// We have -1, 0 or 1, which we treat specially. Register ival contains
|
|
|
|
// absolute value: it is either equal to 1 (special case of -1 and 1),
|
|
|
|
// greater than 1 (not a special case) or less than 1 (special case of 0).
|
|
|
|
__ cmp(ival, Operand(1));
|
|
|
|
__ b(gt, ¬_special);
|
|
|
|
|
|
|
|
// For 1 or -1 we need to or in the 0 exponent (biased).
|
|
|
|
static const uint32_t exponent_word_for_1 =
|
|
|
|
kBinary32ExponentBias << kBinary32ExponentShift;
|
|
|
|
|
|
|
|
__ orr(fval, fval, Operand(exponent_word_for_1), LeaveCC, eq);
|
|
|
|
__ b(&done);
|
|
|
|
|
|
|
|
__ bind(¬_special);
|
|
|
|
// Count leading zeros.
|
|
|
|
// Gets the wrong answer for 0, but we already checked for that case above.
|
|
|
|
Register zeros = scratch2;
|
|
|
|
__ CountLeadingZeros(ival, scratch1, zeros);
|
|
|
|
|
|
|
|
// Compute exponent and or it into the exponent register.
|
|
|
|
__ rsb(scratch1,
|
|
|
|
zeros,
|
|
|
|
Operand((kBitsPerInt - 1) + kBinary32ExponentBias));
|
|
|
|
|
|
|
|
__ orr(fval,
|
|
|
|
fval,
|
|
|
|
Operand(scratch1, LSL, kBinary32ExponentShift));
|
|
|
|
|
|
|
|
// Shift up the source chopping the top bit off.
|
|
|
|
__ add(zeros, zeros, Operand(1));
|
|
|
|
// This wouldn't work for 1 and -1 as the shift would be 32 which means 0.
|
|
|
|
__ mov(ival, Operand(ival, LSL, zeros));
|
|
|
|
// And the top (top 20 bits).
|
|
|
|
__ orr(fval,
|
|
|
|
fval,
|
|
|
|
Operand(ival, LSR, kBitsPerInt - kBinary32MantissaBits));
|
|
|
|
|
|
|
|
__ bind(&done);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static bool IsElementTypeSigned(ExternalArrayType array_type) {
|
|
|
|
switch (array_type) {
|
|
|
|
case kExternalByteArray:
|
|
|
|
case kExternalShortArray:
|
|
|
|
case kExternalIntArray:
|
|
|
|
return true;
|
|
|
|
|
|
|
|
case kExternalUnsignedByteArray:
|
|
|
|
case kExternalUnsignedShortArray:
|
|
|
|
case kExternalUnsignedIntArray:
|
|
|
|
return false;
|
|
|
|
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-10-20 15:26:17 +00:00
|
|
|
void KeyedStoreIC::GenerateExternalArray(MacroAssembler* masm,
|
|
|
|
ExternalArrayType array_type) {
|
2010-03-23 13:38:04 +00:00
|
|
|
// ---------- S t a t e --------------
|
|
|
|
// -- r0 : value
|
2010-05-18 06:57:12 +00:00
|
|
|
// -- r1 : key
|
|
|
|
// -- r2 : receiver
|
2010-03-23 13:38:04 +00:00
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
Label slow, check_heap_number;
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Register usage.
|
|
|
|
Register value = r0;
|
|
|
|
Register key = r1;
|
|
|
|
Register receiver = r2;
|
|
|
|
// r3 mostly holds the elements array or the destination external array.
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
// Check that the object isn't a smi.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ BranchOnSmi(receiver, &slow);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Check that the object is a JS object. Load map into r3.
|
|
|
|
__ CompareObjectType(receiver, r3, r4, FIRST_JS_OBJECT_TYPE);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(le, &slow);
|
|
|
|
|
|
|
|
// Check that the receiver does not require access checks. We need
|
|
|
|
// to do this because this generic stub does not perform map checks.
|
|
|
|
__ ldrb(ip, FieldMemOperand(r3, Map::kBitFieldOffset));
|
|
|
|
__ tst(ip, Operand(1 << Map::kIsAccessCheckNeeded));
|
|
|
|
__ b(ne, &slow);
|
|
|
|
|
|
|
|
// Check that the key is a smi.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ BranchOnNotSmi(key, &slow);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Check that the elements array is the appropriate type of ExternalArray.
|
|
|
|
__ ldr(r3, FieldMemOperand(receiver, JSObject::kElementsOffset));
|
|
|
|
__ ldr(r4, FieldMemOperand(r3, HeapObject::kMapOffset));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ LoadRoot(ip, Heap::RootIndexForExternalArrayType(array_type));
|
2010-05-18 06:57:12 +00:00
|
|
|
__ cmp(r4, ip);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(ne, &slow);
|
|
|
|
|
|
|
|
// Check that the index is in range.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ mov(r4, Operand(key, ASR, kSmiTagSize)); // Untag the index.
|
|
|
|
__ ldr(ip, FieldMemOperand(r3, ExternalArray::kLengthOffset));
|
|
|
|
__ cmp(r4, ip);
|
2010-03-23 13:38:04 +00:00
|
|
|
// Unsigned comparison catches both negative and too-large values.
|
|
|
|
__ b(hs, &slow);
|
|
|
|
|
|
|
|
// Handle both smis and HeapNumbers in the fast path. Go to the
|
|
|
|
// runtime for all other kinds of values.
|
2010-05-18 06:57:12 +00:00
|
|
|
// r3: external array.
|
|
|
|
// r4: key (integer).
|
|
|
|
__ BranchOnNotSmi(value, &check_heap_number);
|
|
|
|
__ mov(r5, Operand(value, ASR, kSmiTagSize)); // Untag the value.
|
|
|
|
__ ldr(r3, FieldMemOperand(r3, ExternalArray::kExternalPointerOffset));
|
|
|
|
|
|
|
|
// r3: base pointer of external storage.
|
|
|
|
// r4: key (integer).
|
|
|
|
// r5: value (integer).
|
2010-03-23 13:38:04 +00:00
|
|
|
switch (array_type) {
|
|
|
|
case kExternalByteArray:
|
|
|
|
case kExternalUnsignedByteArray:
|
2010-05-18 06:57:12 +00:00
|
|
|
__ strb(r5, MemOperand(r3, r4, LSL, 0));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalShortArray:
|
|
|
|
case kExternalUnsignedShortArray:
|
2010-05-18 06:57:12 +00:00
|
|
|
__ strh(r5, MemOperand(r3, r4, LSL, 1));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalIntArray:
|
|
|
|
case kExternalUnsignedIntArray:
|
2010-05-18 06:57:12 +00:00
|
|
|
__ str(r5, MemOperand(r3, r4, LSL, 2));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalFloatArray:
|
|
|
|
// Need to perform int-to-float conversion.
|
2010-05-18 06:57:12 +00:00
|
|
|
ConvertIntToFloat(masm, r5, r6, r7, r9);
|
|
|
|
__ str(r6, MemOperand(r3, r4, LSL, 2));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Entry registers are intact, r0 holds the value which is the return value.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// r3: external array.
|
|
|
|
// r4: index (integer).
|
2010-03-23 13:38:04 +00:00
|
|
|
__ bind(&check_heap_number);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ CompareObjectType(value, r5, r6, HEAP_NUMBER_TYPE);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(ne, &slow);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ ldr(r3, FieldMemOperand(r3, ExternalArray::kExternalPointerOffset));
|
|
|
|
|
|
|
|
// r3: base pointer of external storage.
|
|
|
|
// r4: key (integer).
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
// The WebGL specification leaves the behavior of storing NaN and
|
|
|
|
// +/-Infinity into integer arrays basically undefined. For more
|
|
|
|
// reproducible behavior, convert these to zero.
|
|
|
|
if (CpuFeatures::IsSupported(VFP3)) {
|
|
|
|
CpuFeatures::Scope scope(VFP3);
|
|
|
|
|
|
|
|
// vldr requires offset to be a multiple of 4 so we can not
|
|
|
|
// include -kHeapObjectTag into it.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ sub(r5, r0, Operand(kHeapObjectTag));
|
|
|
|
__ vldr(d0, r5, HeapNumber::kValueOffset);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
if (array_type == kExternalFloatArray) {
|
|
|
|
__ vcvt_f32_f64(s0, d0);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ vmov(r5, s0);
|
|
|
|
__ str(r5, MemOperand(r3, r4, LSL, 2));
|
2010-03-23 13:38:04 +00:00
|
|
|
} else {
|
|
|
|
Label done;
|
|
|
|
|
|
|
|
// Need to perform float-to-int conversion.
|
|
|
|
// Test for NaN.
|
|
|
|
__ vcmp(d0, d0);
|
|
|
|
// Move vector status bits to normal status bits.
|
|
|
|
__ vmrs(v8::internal::pc);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ mov(r5, Operand(0), LeaveCC, vs); // NaN converts to 0.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(vs, &done);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Test whether exponent equal to 0x7FF (infinity or NaN).
|
|
|
|
__ vmov(r6, r7, d0);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ mov(r5, Operand(0x7FF00000));
|
2010-05-18 06:57:12 +00:00
|
|
|
__ and_(r6, r6, Operand(r5));
|
|
|
|
__ teq(r6, Operand(r5));
|
|
|
|
__ mov(r6, Operand(0), LeaveCC, eq);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Not infinity or NaN simply convert to int.
|
2010-03-23 13:38:04 +00:00
|
|
|
if (IsElementTypeSigned(array_type)) {
|
|
|
|
__ vcvt_s32_f64(s0, d0, ne);
|
|
|
|
} else {
|
|
|
|
__ vcvt_u32_f64(s0, d0, ne);
|
|
|
|
}
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ vmov(r5, s0, ne);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
__ bind(&done);
|
|
|
|
switch (array_type) {
|
|
|
|
case kExternalByteArray:
|
|
|
|
case kExternalUnsignedByteArray:
|
2010-05-18 06:57:12 +00:00
|
|
|
__ strb(r5, MemOperand(r3, r4, LSL, 0));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalShortArray:
|
|
|
|
case kExternalUnsignedShortArray:
|
2010-05-18 06:57:12 +00:00
|
|
|
__ strh(r5, MemOperand(r3, r4, LSL, 1));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalIntArray:
|
|
|
|
case kExternalUnsignedIntArray:
|
2010-05-18 06:57:12 +00:00
|
|
|
__ str(r5, MemOperand(r3, r4, LSL, 2));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// Entry registers are intact, r0 holds the value which is the return value.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
} else {
|
2010-05-18 06:57:12 +00:00
|
|
|
// VFP3 is not available do manual conversions.
|
|
|
|
__ ldr(r5, FieldMemOperand(value, HeapNumber::kExponentOffset));
|
|
|
|
__ ldr(r6, FieldMemOperand(value, HeapNumber::kMantissaOffset));
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
if (array_type == kExternalFloatArray) {
|
|
|
|
Label done, nan_or_infinity_or_zero;
|
|
|
|
static const int kMantissaInHiWordShift =
|
|
|
|
kBinary32MantissaBits - HeapNumber::kMantissaBitsInTopWord;
|
|
|
|
|
|
|
|
static const int kMantissaInLoWordShift =
|
|
|
|
kBitsPerInt - kMantissaInHiWordShift;
|
|
|
|
|
|
|
|
// Test for all special exponent values: zeros, subnormal numbers, NaNs
|
|
|
|
// and infinities. All these should be converted to 0.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ mov(r7, Operand(HeapNumber::kExponentMask));
|
|
|
|
__ and_(r9, r5, Operand(r7), SetCC);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(eq, &nan_or_infinity_or_zero);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ teq(r9, Operand(r7));
|
|
|
|
__ mov(r9, Operand(kBinary32ExponentMask), LeaveCC, eq);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(eq, &nan_or_infinity_or_zero);
|
|
|
|
|
|
|
|
// Rebias exponent.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ mov(r9, Operand(r9, LSR, HeapNumber::kExponentShift));
|
|
|
|
__ add(r9,
|
|
|
|
r9,
|
2010-03-23 13:38:04 +00:00
|
|
|
Operand(kBinary32ExponentBias - HeapNumber::kExponentBias));
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ cmp(r9, Operand(kBinary32MaxExponent));
|
|
|
|
__ and_(r5, r5, Operand(HeapNumber::kSignMask), LeaveCC, gt);
|
|
|
|
__ orr(r5, r5, Operand(kBinary32ExponentMask), LeaveCC, gt);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(gt, &done);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ cmp(r9, Operand(kBinary32MinExponent));
|
|
|
|
__ and_(r5, r5, Operand(HeapNumber::kSignMask), LeaveCC, lt);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(lt, &done);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ and_(r7, r5, Operand(HeapNumber::kSignMask));
|
|
|
|
__ and_(r5, r5, Operand(HeapNumber::kMantissaMask));
|
|
|
|
__ orr(r7, r7, Operand(r5, LSL, kMantissaInHiWordShift));
|
|
|
|
__ orr(r7, r7, Operand(r6, LSR, kMantissaInLoWordShift));
|
|
|
|
__ orr(r5, r7, Operand(r9, LSL, kBinary32ExponentShift));
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
__ bind(&done);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ str(r5, MemOperand(r3, r4, LSL, 2));
|
|
|
|
// Entry registers are intact, r0 holds the value which is the return
|
|
|
|
// value.
|
2010-03-23 13:38:04 +00:00
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
__ bind(&nan_or_infinity_or_zero);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ and_(r7, r5, Operand(HeapNumber::kSignMask));
|
|
|
|
__ and_(r5, r5, Operand(HeapNumber::kMantissaMask));
|
|
|
|
__ orr(r9, r9, r7);
|
|
|
|
__ orr(r9, r9, Operand(r5, LSL, kMantissaInHiWordShift));
|
|
|
|
__ orr(r5, r9, Operand(r6, LSR, kMantissaInLoWordShift));
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(&done);
|
|
|
|
} else {
|
2010-05-18 06:57:12 +00:00
|
|
|
bool is_signed_type = IsElementTypeSigned(array_type);
|
2010-03-23 13:38:04 +00:00
|
|
|
int meaningfull_bits = is_signed_type ? (kBitsPerInt - 1) : kBitsPerInt;
|
2010-05-18 06:57:12 +00:00
|
|
|
int32_t min_value = is_signed_type ? 0x80000000 : 0x00000000;
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
Label done, sign;
|
|
|
|
|
|
|
|
// Test for all special exponent values: zeros, subnormal numbers, NaNs
|
|
|
|
// and infinities. All these should be converted to 0.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ mov(r7, Operand(HeapNumber::kExponentMask));
|
|
|
|
__ and_(r9, r5, Operand(r7), SetCC);
|
|
|
|
__ mov(r5, Operand(0), LeaveCC, eq);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(eq, &done);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ teq(r9, Operand(r7));
|
|
|
|
__ mov(r5, Operand(0), LeaveCC, eq);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(eq, &done);
|
|
|
|
|
|
|
|
// Unbias exponent.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ mov(r9, Operand(r9, LSR, HeapNumber::kExponentShift));
|
|
|
|
__ sub(r9, r9, Operand(HeapNumber::kExponentBias), SetCC);
|
2010-03-23 13:38:04 +00:00
|
|
|
// If exponent is negative than result is 0.
|
2010-05-18 06:57:12 +00:00
|
|
|
__ mov(r5, Operand(0), LeaveCC, mi);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(mi, &done);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
// If exponent is too big than result is minimal value.
|
|
|
|
__ cmp(r9, Operand(meaningfull_bits - 1));
|
|
|
|
__ mov(r5, Operand(min_value), LeaveCC, ge);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(ge, &done);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ and_(r7, r5, Operand(HeapNumber::kSignMask), SetCC);
|
|
|
|
__ and_(r5, r5, Operand(HeapNumber::kMantissaMask));
|
|
|
|
__ orr(r5, r5, Operand(1u << HeapNumber::kMantissaBitsInTopWord));
|
2010-03-23 13:38:04 +00:00
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ rsb(r9, r9, Operand(HeapNumber::kMantissaBitsInTopWord), SetCC);
|
|
|
|
__ mov(r5, Operand(r5, LSR, r9), LeaveCC, pl);
|
2010-03-23 13:38:04 +00:00
|
|
|
__ b(pl, &sign);
|
|
|
|
|
2010-05-18 06:57:12 +00:00
|
|
|
__ rsb(r9, r9, Operand(0));
|
|
|
|
__ mov(r5, Operand(r5, LSL, r9));
|
|
|
|
__ rsb(r9, r9, Operand(meaningfull_bits));
|
|
|
|
__ orr(r5, r5, Operand(r6, LSR, r9));
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
__ bind(&sign);
|
2010-05-18 06:57:12 +00:00
|
|
|
__ teq(r7, Operand(0));
|
|
|
|
__ rsb(r5, r5, Operand(0), LeaveCC, ne);
|
2010-03-23 13:38:04 +00:00
|
|
|
|
|
|
|
__ bind(&done);
|
|
|
|
switch (array_type) {
|
|
|
|
case kExternalByteArray:
|
|
|
|
case kExternalUnsignedByteArray:
|
2010-05-18 06:57:12 +00:00
|
|
|
__ strb(r5, MemOperand(r3, r4, LSL, 0));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalShortArray:
|
|
|
|
case kExternalUnsignedShortArray:
|
2010-05-18 06:57:12 +00:00
|
|
|
__ strh(r5, MemOperand(r3, r4, LSL, 1));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
case kExternalIntArray:
|
|
|
|
case kExternalUnsignedIntArray:
|
2010-05-18 06:57:12 +00:00
|
|
|
__ str(r5, MemOperand(r3, r4, LSL, 2));
|
2010-03-23 13:38:04 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Slow case: call runtime.
|
|
|
|
__ bind(&slow);
|
2010-05-18 06:57:12 +00:00
|
|
|
|
|
|
|
// Entry registers are intact.
|
|
|
|
// r0: value
|
|
|
|
// r1: key
|
|
|
|
// r2: receiver
|
2010-03-23 13:38:04 +00:00
|
|
|
GenerateRuntimeSetProperty(masm);
|
2009-10-20 15:26:17 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
|
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r0 : value
|
2010-02-10 15:06:08 +00:00
|
|
|
// -- r1 : receiver
|
2008-07-03 15:10:15 +00:00
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
|
|
|
|
// Get the receiver from the stack and probe the stub cache.
|
2009-05-25 18:29:02 +00:00
|
|
|
Code::Flags flags = Code::ComputeFlags(Code::STORE_IC,
|
|
|
|
NOT_IN_LOOP,
|
|
|
|
MONOMORPHIC);
|
2009-07-03 08:00:51 +00:00
|
|
|
StubCache::GenerateProbe(masm, flags, r1, r2, r3, no_reg);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Cache miss: Jump to runtime.
|
2010-02-01 11:07:41 +00:00
|
|
|
GenerateMiss(masm);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-02-01 11:07:41 +00:00
|
|
|
void StoreIC::GenerateMiss(MacroAssembler* masm) {
|
2008-07-03 15:10:15 +00:00
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r0 : value
|
2010-02-10 15:06:08 +00:00
|
|
|
// -- r1 : receiver
|
2008-07-03 15:10:15 +00:00
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
|
2010-04-26 14:25:29 +00:00
|
|
|
__ Push(r1, r2, r0);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-08-13 09:32:07 +00:00
|
|
|
// Perform tail call to the entry.
|
2010-02-24 08:33:51 +00:00
|
|
|
ExternalReference ref = ExternalReference(IC_Utility(kStoreIC_Miss));
|
|
|
|
__ TailCallExternalReference(ref, 3, 1);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-02-18 17:30:32 +00:00
|
|
|
void StoreIC::GenerateArrayLength(MacroAssembler* masm) {
|
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r0 : value
|
|
|
|
// -- r1 : receiver
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
//
|
|
|
|
// This accepts as a receiver anything JSObject::SetElementsLength accepts
|
|
|
|
// (currently anything except for external and pixel arrays which means
|
|
|
|
// anything with elements of FixedArray type.), but currently is restricted
|
|
|
|
// to JSArray.
|
|
|
|
// Value must be a number, but only smis are accepted as the most common case.
|
|
|
|
|
|
|
|
Label miss;
|
|
|
|
|
|
|
|
Register receiver = r1;
|
|
|
|
Register value = r0;
|
|
|
|
Register scratch = r3;
|
|
|
|
|
|
|
|
// Check that the receiver isn't a smi.
|
|
|
|
__ BranchOnSmi(receiver, &miss);
|
|
|
|
|
|
|
|
// Check that the object is a JS array.
|
|
|
|
__ CompareObjectType(receiver, scratch, scratch, JS_ARRAY_TYPE);
|
|
|
|
__ b(ne, &miss);
|
|
|
|
|
|
|
|
// Check that elements are FixedArray.
|
|
|
|
__ ldr(scratch, FieldMemOperand(receiver, JSArray::kElementsOffset));
|
|
|
|
__ CompareObjectType(scratch, scratch, scratch, FIXED_ARRAY_TYPE);
|
|
|
|
__ b(ne, &miss);
|
|
|
|
|
|
|
|
// Check that value is a smi.
|
|
|
|
__ BranchOnNotSmi(value, &miss);
|
|
|
|
|
|
|
|
// Prepare tail call to StoreIC_ArrayLength.
|
2010-04-26 14:25:29 +00:00
|
|
|
__ Push(receiver, value);
|
2010-02-18 17:30:32 +00:00
|
|
|
|
2010-02-24 08:33:51 +00:00
|
|
|
ExternalReference ref = ExternalReference(IC_Utility(kStoreIC_ArrayLength));
|
|
|
|
__ TailCallExternalReference(ref, 2, 1);
|
2010-02-18 17:30:32 +00:00
|
|
|
|
|
|
|
__ bind(&miss);
|
|
|
|
|
|
|
|
GenerateMiss(masm);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
#undef __
|
|
|
|
|
|
|
|
|
|
|
|
} } // namespace v8::internal
|
2010-05-17 15:41:35 +00:00
|
|
|
|
|
|
|
#endif // V8_TARGET_ARCH_ARM
|