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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2010-08-30 11:48:07 +00:00
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#include "code-stubs.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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2010-06-23 09:10:21 +00:00
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static void GenerateGlobalInstanceTypeCheck(MacroAssembler* masm,
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Register type,
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Label* global_object) {
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// Register usage:
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// type: holds the receiver instance type on entry.
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__ cmp(type, Operand(JS_GLOBAL_OBJECT_TYPE));
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__ b(eq, global_object);
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__ cmp(type, Operand(JS_BUILTINS_OBJECT_TYPE));
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__ b(eq, global_object);
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__ cmp(type, Operand(JS_GLOBAL_PROXY_TYPE));
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__ b(eq, global_object);
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}
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// Generated code falls through if the receiver is a regular non-global
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// JS object with slow properties and no interceptors.
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2010-06-30 12:27:49 +00:00
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static void GenerateStringDictionaryReceiverCheck(MacroAssembler* masm,
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Register receiver,
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Register elements,
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Register t0,
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Register t1,
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Label* miss) {
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2010-06-23 09:10:21 +00:00
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// Register usage:
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// receiver: holds the receiver on entry and is unchanged.
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// elements: holds the property dictionary on fall through.
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// Scratch registers:
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// t0: used to holds the receiver map.
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// t1: used to holds the receiver instance type, receiver bit mask and
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// elements map.
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// Check that the receiver isn't a smi.
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__ tst(receiver, Operand(kSmiTagMask));
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__ b(eq, miss);
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// Check that the receiver is a valid JS object.
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__ CompareObjectType(receiver, t0, t1, FIRST_JS_OBJECT_TYPE);
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__ b(lt, miss);
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// If this assert fails, we have to check upper bound too.
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ASSERT(LAST_TYPE == JS_FUNCTION_TYPE);
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GenerateGlobalInstanceTypeCheck(masm, t1, miss);
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// Check that the global object does not require access checks.
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__ ldrb(t1, FieldMemOperand(t0, Map::kBitFieldOffset));
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__ tst(t1, Operand((1 << Map::kIsAccessCheckNeeded) |
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(1 << Map::kHasNamedInterceptor)));
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2011-01-26 08:32:54 +00:00
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__ b(ne, miss);
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2010-06-23 09:10:21 +00:00
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__ ldr(elements, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
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__ ldr(t1, FieldMemOperand(elements, HeapObject::kMapOffset));
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__ LoadRoot(ip, Heap::kHashTableMapRootIndex);
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__ cmp(t1, ip);
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2011-01-26 08:32:54 +00:00
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__ b(ne, miss);
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2010-06-23 09:10:21 +00:00
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}
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2010-06-30 12:27:49 +00:00
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// Probe the string dictionary in the |elements| register. Jump to the
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// |done| label if a property with the given name is found. Jump to
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// the |miss| label otherwise.
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static void GenerateStringDictionaryProbes(MacroAssembler* masm,
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Label* miss,
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Label* done,
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Register elements,
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Register name,
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Register scratch1,
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Register scratch2) {
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2011-02-14 13:13:41 +00:00
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// Assert that name contains a string.
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if (FLAG_debug_code) __ AbortIfNotString(name);
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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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2010-06-23 09:10:21 +00:00
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__ ldr(scratch1, FieldMemOperand(elements, kCapacityOffset));
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__ mov(scratch1, Operand(scratch1, ASR, kSmiTagSize)); // convert smi to int
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__ sub(scratch1, scratch1, 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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2010-06-23 09:10:21 +00:00
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__ ldr(scratch2, 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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2010-06-23 09:10:21 +00:00
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__ add(scratch2, scratch2, 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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2010-06-23 09:10:21 +00:00
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__ and_(scratch2, scratch1, Operand(scratch2, 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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2010-06-23 09:10:21 +00:00
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// scratch2 = scratch2 * 3.
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__ add(scratch2, scratch2, Operand(scratch2, 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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2010-06-23 09:10:21 +00:00
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__ add(scratch2, elements, Operand(scratch2, LSL, 2));
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__ ldr(ip, FieldMemOperand(scratch2, kElementsStartOffset));
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2010-06-01 21:11:38 +00:00
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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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2010-06-30 12:27:49 +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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2010-06-30 12:27:49 +00:00
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}
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2008-07-03 15:10:15 +00:00
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2010-06-30 12:27:49 +00:00
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// Helper function used from LoadIC/CallIC GenerateNormal.
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//
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// elements: Property dictionary. It is not clobbered if a jump to the miss
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// label is 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 elements 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 two scratch registers need to be different from elements, name and
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// result.
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// The generated code assumes that the receiver has slow properties,
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// is not a global object and does not have interceptors.
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static void GenerateDictionaryLoad(MacroAssembler* masm,
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Label* miss,
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Register elements,
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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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// Main use of the scratch registers.
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// scratch1: Used as temporary and to hold the capacity of the property
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// dictionary.
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// scratch2: Used as temporary.
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Label done;
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// Probe the dictionary.
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GenerateStringDictionaryProbes(masm,
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miss,
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&done,
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elements,
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name,
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scratch1,
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scratch2);
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// If probing finds an entry check that the value is a normal
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// property.
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2010-06-23 09:10:21 +00:00
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__ bind(&done); // scratch2 == elements + 4 * index
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2010-06-30 12:27:49 +00:00
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const int kElementsStartOffset = StringDictionary::kHeaderSize +
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StringDictionary::kElementsStartIndex * kPointerSize;
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const int kDetailsOffset = kElementsStartOffset + 2 * kPointerSize;
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__ ldr(scratch1, FieldMemOperand(scratch2, kDetailsOffset));
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2010-06-23 09:10:21 +00:00
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__ tst(scratch1, 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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2010-06-23 09:10:21 +00:00
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FieldMemOperand(scratch2, kElementsStartOffset + 1 * kPointerSize));
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2008-07-03 15:10:15 +00:00
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}
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2010-06-30 12:27:49 +00:00
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// Helper function used from StoreIC::GenerateNormal.
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//
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// elements: Property dictionary. It is not clobbered if a jump to the miss
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// label is 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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// value: The value to store.
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// The two scratch registers need to be different from elements, name and
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// result.
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// The generated code assumes that the receiver has slow properties,
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// is not a global object and does not have interceptors.
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static void GenerateDictionaryStore(MacroAssembler* masm,
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Label* miss,
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Register elements,
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Register name,
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Register value,
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Register scratch1,
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Register scratch2) {
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// Main use of the scratch registers.
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// scratch1: Used as temporary and to hold the capacity of the property
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// dictionary.
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// scratch2: Used as temporary.
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Label done;
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// Probe the dictionary.
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GenerateStringDictionaryProbes(masm,
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miss,
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&done,
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elements,
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name,
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scratch1,
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scratch2);
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// If probing finds an entry in the dictionary check that the value
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// is a normal property that is not read only.
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__ bind(&done); // scratch2 == elements + 4 * index
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const int kElementsStartOffset = StringDictionary::kHeaderSize +
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StringDictionary::kElementsStartIndex * kPointerSize;
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const int kDetailsOffset = kElementsStartOffset + 2 * kPointerSize;
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const int kTypeAndReadOnlyMask
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= (PropertyDetails::TypeField::mask() |
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PropertyDetails::AttributesField::encode(READ_ONLY)) << kSmiTagSize;
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__ ldr(scratch1, FieldMemOperand(scratch2, kDetailsOffset));
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__ tst(scratch1, Operand(kTypeAndReadOnlyMask));
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__ b(ne, miss);
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// Store the value at the masked, scaled index and return.
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const int kValueOffset = kElementsStartOffset + kPointerSize;
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__ add(scratch2, scratch2, Operand(kValueOffset - kHeapObjectTag));
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__ str(value, MemOperand(scratch2));
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// Update the write barrier. Make sure not to clobber the value.
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__ mov(scratch1, value);
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__ RecordWrite(elements, scratch2, scratch1);
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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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2010-06-16 10:03:47 +00:00
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Register result,
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2010-03-26 09:05:22 +00:00
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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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2010-06-16 10:03:47 +00:00
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// elements - holds the slow-case elements of the receiver on entry.
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// Unchanged unless 'result' is the same register.
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2010-03-26 09:05:22 +00:00
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//
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2010-06-16 10:03:47 +00:00
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// key - holds the smi key on entry.
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// Unchanged unless 'result' is the same register.
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//
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// result - holds the result on exit if the load succeeded.
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// Allowed to be the same as 'key' or 'result'.
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// Unchanged on bailout so 'key' or 'result' can be used
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// in further computation.
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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));
|
|
|
|
// hash = hash ^ (hash >> 4);
|
|
|
|
__ eor(t0, t0, Operand(t0, LSR, 4));
|
|
|
|
// hash = hash * 2057;
|
|
|
|
__ mov(t1, Operand(2057));
|
|
|
|
__ mul(t0, t0, t1);
|
|
|
|
// hash = hash ^ (hash >> 16);
|
|
|
|
__ eor(t0, t0, Operand(t0, LSR, 16));
|
|
|
|
|
|
|
|
// Compute the capacity mask.
|
|
|
|
__ ldr(t1, FieldMemOperand(elements, NumberDictionary::kCapacityOffset));
|
|
|
|
__ mov(t1, Operand(t1, ASR, kSmiTagSize)); // convert smi to int
|
|
|
|
__ sub(t1, t1, Operand(1));
|
|
|
|
|
|
|
|
// Generate an unrolled loop that performs a few probes before giving up.
|
|
|
|
static const int kProbes = 4;
|
|
|
|
for (int i = 0; i < kProbes; i++) {
|
|
|
|
// Use t2 for index calculations and keep the hash intact in t0.
|
|
|
|
__ mov(t2, t0);
|
|
|
|
// Compute the masked index: (hash + i + i * i) & mask.
|
|
|
|
if (i > 0) {
|
|
|
|
__ add(t2, t2, Operand(NumberDictionary::GetProbeOffset(i)));
|
|
|
|
}
|
|
|
|
__ and_(t2, t2, Operand(t1));
|
|
|
|
|
|
|
|
// Scale the index by multiplying by the element size.
|
|
|
|
ASSERT(NumberDictionary::kEntrySize == 3);
|
|
|
|
__ add(t2, t2, Operand(t2, LSL, 1)); // t2 = t2 * 3
|
|
|
|
|
|
|
|
// Check if the key is identical to the name.
|
|
|
|
__ add(t2, elements, Operand(t2, LSL, kPointerSizeLog2));
|
|
|
|
__ ldr(ip, FieldMemOperand(t2, NumberDictionary::kElementsStartOffset));
|
|
|
|
__ cmp(key, Operand(ip));
|
|
|
|
if (i != kProbes - 1) {
|
|
|
|
__ b(eq, &done);
|
|
|
|
} else {
|
|
|
|
__ b(ne, miss);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
__ bind(&done);
|
|
|
|
// Check that the value is a normal property.
|
|
|
|
// t2: elements + (index * kPointerSize)
|
|
|
|
const int kDetailsOffset =
|
|
|
|
NumberDictionary::kElementsStartOffset + 2 * kPointerSize;
|
|
|
|
__ ldr(t1, FieldMemOperand(t2, kDetailsOffset));
|
|
|
|
__ tst(t1, Operand(Smi::FromInt(PropertyDetails::TypeField::mask())));
|
|
|
|
__ b(ne, miss);
|
|
|
|
|
|
|
|
// Get the value at the masked, scaled index and return.
|
|
|
|
const int kValueOffset =
|
|
|
|
NumberDictionary::kElementsStartOffset + kPointerSize;
|
2010-06-16 10:03:47 +00:00
|
|
|
__ ldr(result, FieldMemOperand(t2, kValueOffset));
|
2010-03-26 09:05:22 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
void LoadIC::GenerateArrayLength(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
|
|
|
// -----------------------------------
|
|
|
|
Label miss;
|
|
|
|
|
2008-11-13 01:18:31 +00:00
|
|
|
StubCompiler::GenerateLoadArrayLength(masm, r0, r3, &miss);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ bind(&miss);
|
2008-11-13 01:18:31 +00:00
|
|
|
StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2011-01-25 15:51:10 +00:00
|
|
|
void LoadIC::GenerateStringLength(MacroAssembler* masm, bool support_wrappers) {
|
2008-07-03 15:10:15 +00:00
|
|
|
// ----------- 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
|
|
|
// -----------------------------------
|
2008-11-20 16:59:00 +00:00
|
|
|
Label miss;
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2011-01-25 15:51:10 +00:00
|
|
|
StubCompiler::GenerateLoadStringLength(masm, r0, r1, r3, &miss,
|
|
|
|
support_wrappers);
|
2008-07-03 15:10:15 +00:00
|
|
|
// Cache miss: Jump to runtime.
|
|
|
|
__ bind(&miss);
|
2008-11-13 01:18:31 +00:00
|
|
|
StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void LoadIC::GenerateFunctionPrototype(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
|
|
|
// -----------------------------------
|
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
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-16 10:03:47 +00:00
|
|
|
// Checks the receiver for special cases (value type, slow case bits).
|
|
|
|
// Falls through for regular JS object.
|
|
|
|
static void GenerateKeyedLoadReceiverCheck(MacroAssembler* masm,
|
|
|
|
Register receiver,
|
2010-08-16 16:06:46 +00:00
|
|
|
Register map,
|
|
|
|
Register scratch,
|
2010-06-23 09:10:21 +00:00
|
|
|
int interceptor_bit,
|
2010-06-16 10:03:47 +00:00
|
|
|
Label* slow) {
|
|
|
|
// Check that the object isn't a smi.
|
2011-01-26 07:44:45 +00:00
|
|
|
__ JumpIfSmi(receiver, slow);
|
2010-06-16 10:03:47 +00:00
|
|
|
// Get the map of the receiver.
|
2010-08-16 16:06:46 +00:00
|
|
|
__ ldr(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
|
2010-06-16 10:03:47 +00:00
|
|
|
// Check bit field.
|
2010-08-16 16:06:46 +00:00
|
|
|
__ ldrb(scratch, FieldMemOperand(map, Map::kBitFieldOffset));
|
|
|
|
__ tst(scratch,
|
2010-06-23 09:10:21 +00:00
|
|
|
Operand((1 << Map::kIsAccessCheckNeeded) | (1 << interceptor_bit)));
|
2011-01-26 08:32:54 +00:00
|
|
|
__ b(ne, slow);
|
2010-06-16 10:03:47 +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);
|
2010-08-16 16:06:46 +00:00
|
|
|
__ ldrb(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
|
|
|
|
__ cmp(scratch, Operand(JS_OBJECT_TYPE));
|
2010-06-16 10:03:47 +00:00
|
|
|
__ b(lt, slow);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Loads an indexed element from a fast case array.
|
2010-08-16 16:06:46 +00:00
|
|
|
// If not_fast_array is NULL, doesn't perform the elements map check.
|
2010-06-16 10:03:47 +00:00
|
|
|
static void GenerateFastArrayLoad(MacroAssembler* masm,
|
|
|
|
Register receiver,
|
|
|
|
Register key,
|
|
|
|
Register elements,
|
|
|
|
Register scratch1,
|
|
|
|
Register scratch2,
|
|
|
|
Register result,
|
|
|
|
Label* not_fast_array,
|
|
|
|
Label* out_of_range) {
|
|
|
|
// Register use:
|
|
|
|
//
|
|
|
|
// receiver - holds the receiver on entry.
|
|
|
|
// Unchanged unless 'result' is the same register.
|
|
|
|
//
|
|
|
|
// key - holds the smi key on entry.
|
|
|
|
// Unchanged unless 'result' is the same register.
|
|
|
|
//
|
|
|
|
// elements - holds the elements of the receiver on exit.
|
|
|
|
//
|
|
|
|
// result - holds the result on exit if the load succeeded.
|
|
|
|
// Allowed to be the the same as 'receiver' or 'key'.
|
|
|
|
// Unchanged on bailout so 'receiver' and 'key' can be safely
|
|
|
|
// used by further computation.
|
|
|
|
//
|
|
|
|
// Scratch registers:
|
|
|
|
//
|
|
|
|
// scratch1 - used to hold elements map and elements length.
|
|
|
|
// Holds the elements map if not_fast_array branch is taken.
|
|
|
|
//
|
|
|
|
// scratch2 - used to hold the loaded value.
|
|
|
|
|
|
|
|
__ ldr(elements, FieldMemOperand(receiver, JSObject::kElementsOffset));
|
2010-08-16 16:06:46 +00:00
|
|
|
if (not_fast_array != NULL) {
|
|
|
|
// Check that the object is in fast mode and writable.
|
|
|
|
__ ldr(scratch1, FieldMemOperand(elements, HeapObject::kMapOffset));
|
|
|
|
__ LoadRoot(ip, Heap::kFixedArrayMapRootIndex);
|
|
|
|
__ cmp(scratch1, ip);
|
|
|
|
__ b(ne, not_fast_array);
|
|
|
|
} else {
|
|
|
|
__ AssertFastElements(elements);
|
|
|
|
}
|
2010-06-16 10:03:47 +00:00
|
|
|
// Check that the key (index) is within bounds.
|
|
|
|
__ ldr(scratch1, FieldMemOperand(elements, FixedArray::kLengthOffset));
|
|
|
|
__ cmp(key, Operand(scratch1));
|
|
|
|
__ b(hs, out_of_range);
|
|
|
|
// Fast case: Do the load.
|
|
|
|
__ add(scratch1, elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
|
|
|
|
// The key is a smi.
|
|
|
|
ASSERT(kSmiTag == 0 && kSmiTagSize < kPointerSizeLog2);
|
|
|
|
__ ldr(scratch2,
|
|
|
|
MemOperand(scratch1, key, LSL, kPointerSizeLog2 - kSmiTagSize));
|
|
|
|
__ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
|
|
|
|
__ cmp(scratch2, ip);
|
|
|
|
// In case the loaded value is the_hole we have to consult GetProperty
|
|
|
|
// to ensure the prototype chain is searched.
|
|
|
|
__ b(eq, out_of_range);
|
|
|
|
__ mov(result, scratch2);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// Checks whether a key is an array index string or a symbol string.
|
|
|
|
// Falls through if a key is a symbol.
|
|
|
|
static void GenerateKeyStringCheck(MacroAssembler* masm,
|
|
|
|
Register key,
|
|
|
|
Register map,
|
|
|
|
Register hash,
|
|
|
|
Label* index_string,
|
|
|
|
Label* not_symbol) {
|
|
|
|
// The key is not a smi.
|
|
|
|
// Is it a string?
|
|
|
|
__ CompareObjectType(key, map, hash, FIRST_NONSTRING_TYPE);
|
|
|
|
__ b(ge, not_symbol);
|
|
|
|
|
|
|
|
// Is the string an array index, with cached numeric value?
|
|
|
|
__ ldr(hash, FieldMemOperand(key, String::kHashFieldOffset));
|
|
|
|
__ tst(hash, Operand(String::kContainsCachedArrayIndexMask));
|
|
|
|
__ b(eq, index_string);
|
|
|
|
|
|
|
|
// Is the string a symbol?
|
|
|
|
// map: key map
|
|
|
|
__ ldrb(hash, FieldMemOperand(map, Map::kInstanceTypeOffset));
|
|
|
|
ASSERT(kSymbolTag != 0);
|
|
|
|
__ tst(hash, Operand(kIsSymbolMask));
|
|
|
|
__ b(eq, not_symbol);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
// Defined in ic.cc.
|
|
|
|
Object* CallIC_Miss(Arguments args);
|
|
|
|
|
2010-06-16 10:03:47 +00:00
|
|
|
// The generated code does not accept smi keys.
|
|
|
|
// The generated code falls through if both probes miss.
|
|
|
|
static void GenerateMonomorphicCacheProbe(MacroAssembler* masm,
|
|
|
|
int argc,
|
|
|
|
Code::Kind kind) {
|
2008-07-03 15:10:15 +00:00
|
|
|
// ----------- S t a t e -------------
|
2010-06-16 10:03:47 +00:00
|
|
|
// -- r1 : receiver
|
2010-02-15 12:26:07 +00:00
|
|
|
// -- r2 : name
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------
|
|
|
|
Label number, non_number, non_string, boolean, probe, miss;
|
|
|
|
|
|
|
|
// Probe the stub cache.
|
2011-01-18 16:54:48 +00:00
|
|
|
Code::Flags flags = Code::ComputeFlags(kind,
|
|
|
|
NOT_IN_LOOP,
|
|
|
|
MONOMORPHIC,
|
|
|
|
Code::kNoExtraICState,
|
|
|
|
NORMAL,
|
|
|
|
argc);
|
2011-03-18 18:49:56 +00:00
|
|
|
Isolate::Current()->stub_cache()->GenerateProbe(
|
|
|
|
masm, flags, r1, r2, r3, r4, r5);
|
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);
|
2011-03-18 18:49:56 +00:00
|
|
|
Isolate::Current()->stub_cache()->GenerateProbe(
|
|
|
|
masm, flags, r1, r2, r3, r4, r5);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
__ bind(&miss);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
static void GenerateFunctionTailCall(MacroAssembler* masm,
|
|
|
|
int argc,
|
|
|
|
Label* miss,
|
|
|
|
Register scratch) {
|
|
|
|
// r1: function
|
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);
|
|
|
|
|
|
|
|
// Invoke the function.
|
|
|
|
ParameterCount actual(argc);
|
|
|
|
__ InvokeFunction(r1, actual, JUMP_FUNCTION);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-16 10:03:47 +00:00
|
|
|
static void GenerateCallNormal(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
|
|
|
// -----------------------------------
|
2010-06-23 09:10:21 +00:00
|
|
|
Label miss;
|
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
|
|
|
|
2010-06-30 12:27:49 +00:00
|
|
|
GenerateStringDictionaryReceiverCheck(masm, r1, r0, r3, r4, &miss);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
// r0: elements
|
|
|
|
// Search the dictionary - put result in register r1.
|
|
|
|
GenerateDictionaryLoad(masm, &miss, r0, r2, r1, r3, r4);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
GenerateFunctionTailCall(masm, argc, &miss, r4);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
__ bind(&miss);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-16 10:03:47 +00:00
|
|
|
static void GenerateCallMiss(MacroAssembler* masm, int argc, IC::UtilityId id) {
|
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
|
|
|
// -----------------------------------
|
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
if (id == IC::kCallIC_Miss) {
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->call_miss(), 1, r3, r4);
|
2010-06-23 09:10:21 +00:00
|
|
|
} else {
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_call_miss(), 1, r3, r4);
|
2010-06-23 09:10:21 +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));
|
2010-06-16 10:03:47 +00:00
|
|
|
__ mov(r1, Operand(ExternalReference(IC_Utility(id))));
|
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.
|
2010-06-23 09:10:21 +00:00
|
|
|
// This can happen only for regular CallIC but not KeyedCallIC.
|
|
|
|
if (id == IC::kCallIC_Miss) {
|
|
|
|
Label invoke, global;
|
|
|
|
__ ldr(r2, MemOperand(sp, argc * kPointerSize)); // receiver
|
|
|
|
__ tst(r2, Operand(kSmiTagMask));
|
|
|
|
__ b(eq, &invoke);
|
|
|
|
__ CompareObjectType(r2, r3, r3, JS_GLOBAL_OBJECT_TYPE);
|
|
|
|
__ 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));
|
|
|
|
__ bind(&invoke);
|
|
|
|
}
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-08-06 10:02:49 +00:00
|
|
|
// Invoke the function.
|
|
|
|
ParameterCount actual(argc);
|
|
|
|
__ InvokeFunction(r1, actual, JUMP_FUNCTION);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-16 10:03:47 +00:00
|
|
|
void CallIC::GenerateMiss(MacroAssembler* masm, int argc) {
|
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
|
|
|
|
GenerateCallMiss(masm, argc, IC::kCallIC_Miss);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void CallIC::GenerateMegamorphic(MacroAssembler* masm, int argc) {
|
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
|
|
|
|
// Get the receiver of the function from the stack into r1.
|
|
|
|
__ ldr(r1, MemOperand(sp, argc * kPointerSize));
|
|
|
|
GenerateMonomorphicCacheProbe(masm, argc, Code::CALL_IC);
|
|
|
|
GenerateMiss(masm, argc);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void CallIC::GenerateNormal(MacroAssembler* masm, int argc) {
|
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
|
|
|
|
GenerateCallNormal(masm, argc);
|
|
|
|
GenerateMiss(masm, argc);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-07 08:27:32 +00:00
|
|
|
void KeyedCallIC::GenerateMiss(MacroAssembler* masm, int argc) {
|
2010-06-16 10:03:47 +00:00
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
|
|
|
|
GenerateCallMiss(masm, argc, IC::kKeyedCallIC_Miss);
|
2010-06-07 08:27:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void KeyedCallIC::GenerateMegamorphic(MacroAssembler* masm, int argc) {
|
2010-06-16 10:03:47 +00:00
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
|
|
|
|
// Get the receiver of the function from the stack into r1.
|
|
|
|
__ ldr(r1, MemOperand(sp, argc * kPointerSize));
|
|
|
|
|
|
|
|
Label do_call, slow_call, slow_load, slow_reload_receiver;
|
|
|
|
Label check_number_dictionary, check_string, lookup_monomorphic_cache;
|
|
|
|
Label index_smi, index_string;
|
|
|
|
|
|
|
|
// Check that the key is a smi.
|
2011-01-26 07:44:45 +00:00
|
|
|
__ JumpIfNotSmi(r2, &check_string);
|
2010-06-16 10:03:47 +00:00
|
|
|
__ 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.
|
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
GenerateKeyedLoadReceiverCheck(
|
|
|
|
masm, r1, r0, r3, Map::kHasIndexedInterceptor, &slow_call);
|
2010-06-16 10:03:47 +00:00
|
|
|
|
|
|
|
GenerateFastArrayLoad(
|
|
|
|
masm, r1, r2, r4, r3, r0, r1, &check_number_dictionary, &slow_load);
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_call_generic_smi_fast(), 1, r0, r3);
|
2010-06-16 10:03:47 +00:00
|
|
|
|
|
|
|
__ bind(&do_call);
|
|
|
|
// receiver in r1 is not used after this point.
|
|
|
|
// r2: key
|
|
|
|
// r1: function
|
2010-06-23 09:10:21 +00:00
|
|
|
GenerateFunctionTailCall(masm, argc, &slow_call, r0);
|
2010-06-16 10:03:47 +00:00
|
|
|
|
|
|
|
__ bind(&check_number_dictionary);
|
|
|
|
// r2: key
|
|
|
|
// r3: elements map
|
|
|
|
// r4: elements
|
|
|
|
// Check whether the elements is a number dictionary.
|
|
|
|
__ LoadRoot(ip, Heap::kHashTableMapRootIndex);
|
|
|
|
__ cmp(r3, ip);
|
|
|
|
__ b(ne, &slow_load);
|
|
|
|
__ mov(r0, Operand(r2, ASR, kSmiTagSize));
|
|
|
|
// r0: untagged index
|
|
|
|
GenerateNumberDictionaryLoad(masm, &slow_load, r4, r2, r1, r0, r3, r5);
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_call_generic_smi_dict(), 1, r0, r3);
|
2010-06-16 10:03:47 +00:00
|
|
|
__ jmp(&do_call);
|
|
|
|
|
|
|
|
__ bind(&slow_load);
|
|
|
|
// This branch is taken when calling KeyedCallIC_Miss is neither required
|
|
|
|
// nor beneficial.
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_call_generic_slow_load(), 1, r0, r3);
|
2010-06-16 10:03:47 +00:00
|
|
|
__ EnterInternalFrame();
|
|
|
|
__ push(r2); // save the key
|
|
|
|
__ Push(r1, r2); // pass the receiver and the key
|
|
|
|
__ CallRuntime(Runtime::kKeyedGetProperty, 2);
|
|
|
|
__ pop(r2); // restore the key
|
|
|
|
__ LeaveInternalFrame();
|
|
|
|
__ mov(r1, r0);
|
|
|
|
__ jmp(&do_call);
|
|
|
|
|
|
|
|
__ bind(&check_string);
|
|
|
|
GenerateKeyStringCheck(masm, r2, r0, r3, &index_string, &slow_call);
|
|
|
|
|
|
|
|
// The key is known to be a symbol.
|
|
|
|
// If the receiver is a regular JS object with slow properties then do
|
|
|
|
// a quick inline probe of the receiver's dictionary.
|
|
|
|
// Otherwise do the monomorphic cache probe.
|
2010-06-23 09:10:21 +00:00
|
|
|
GenerateKeyedLoadReceiverCheck(
|
|
|
|
masm, r1, r0, r3, Map::kHasNamedInterceptor, &lookup_monomorphic_cache);
|
2010-06-16 10:03:47 +00:00
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
__ ldr(r0, FieldMemOperand(r1, JSObject::kPropertiesOffset));
|
|
|
|
__ ldr(r3, FieldMemOperand(r0, HeapObject::kMapOffset));
|
2010-06-16 10:03:47 +00:00
|
|
|
__ LoadRoot(ip, Heap::kHashTableMapRootIndex);
|
|
|
|
__ cmp(r3, ip);
|
|
|
|
__ b(ne, &lookup_monomorphic_cache);
|
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
GenerateDictionaryLoad(masm, &slow_load, r0, r2, r1, r3, r4);
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_call_generic_lookup_dict(), 1, r0, r3);
|
2010-06-16 10:03:47 +00:00
|
|
|
__ jmp(&do_call);
|
|
|
|
|
|
|
|
__ bind(&lookup_monomorphic_cache);
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_call_generic_lookup_cache(), 1, r0, r3);
|
2010-06-16 10:03:47 +00:00
|
|
|
GenerateMonomorphicCacheProbe(masm, argc, Code::KEYED_CALL_IC);
|
|
|
|
// Fall through on miss.
|
|
|
|
|
|
|
|
__ bind(&slow_call);
|
|
|
|
// This branch is taken if:
|
|
|
|
// - the receiver requires boxing or access check,
|
|
|
|
// - the key is neither smi nor symbol,
|
|
|
|
// - the value loaded is not a function,
|
|
|
|
// - there is hope that the runtime will create a monomorphic call stub
|
|
|
|
// that will get fetched next time.
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_call_generic_slow(), 1, r0, r3);
|
2010-06-16 10:03:47 +00:00
|
|
|
GenerateMiss(masm, argc);
|
|
|
|
|
|
|
|
__ bind(&index_string);
|
2010-08-27 11:47:12 +00:00
|
|
|
__ IndexFromHash(r3, r2);
|
2010-06-16 10:03:47 +00:00
|
|
|
// Now jump to the place where smi keys are handled.
|
|
|
|
__ jmp(&index_smi);
|
2010-06-07 08:27:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void KeyedCallIC::GenerateNormal(MacroAssembler* masm, int argc) {
|
2010-06-16 10:03:47 +00:00
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
|
2011-02-14 13:13:41 +00:00
|
|
|
// Check if the name is a string.
|
|
|
|
Label miss;
|
|
|
|
__ tst(r2, Operand(kSmiTagMask));
|
|
|
|
__ b(eq, &miss);
|
|
|
|
__ IsObjectJSStringType(r2, r0, &miss);
|
|
|
|
|
2010-06-16 10:03:47 +00:00
|
|
|
GenerateCallNormal(masm, argc);
|
2011-02-14 13:13:41 +00:00
|
|
|
__ bind(&miss);
|
2010-06-16 10:03:47 +00:00
|
|
|
GenerateMiss(masm, argc);
|
2010-06-07 08:27:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
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);
|
2011-03-18 18:49:56 +00:00
|
|
|
Isolate::Current()->stub_cache()->GenerateProbe(
|
|
|
|
masm, flags, r0, r2, r3, r4, r5);
|
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
|
|
|
// -----------------------------------
|
2010-06-23 09:10:21 +00:00
|
|
|
Label miss;
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2010-06-30 12:27:49 +00:00
|
|
|
GenerateStringDictionaryReceiverCheck(masm, r0, r1, r3, r4, &miss);
|
2008-12-10 08:05:10 +00:00
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
// r1: elements
|
|
|
|
GenerateDictionaryLoad(masm, &miss, r1, r2, r0, r3, r4);
|
2008-07-03 15:10:15 +00:00
|
|
|
__ Ret();
|
|
|
|
|
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
|
|
|
// -----------------------------------
|
|
|
|
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->load_miss(), 1, r3, r4);
|
2010-06-23 09:10:21 +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
|
|
|
}
|
|
|
|
|
2010-11-24 09:40:58 +00:00
|
|
|
// Returns the code marker, or the 0 if the code is not marked.
|
|
|
|
static inline int InlinedICSiteMarker(Address address,
|
|
|
|
Address* inline_end_address) {
|
2010-12-07 11:31:57 +00:00
|
|
|
if (V8::UseCrankshaft()) return false;
|
|
|
|
|
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);
|
2010-11-24 09:40:58 +00:00
|
|
|
int code_marker = MacroAssembler::GetCodeMarker(instr_after_call);
|
|
|
|
|
|
|
|
// A negative result means the code is not marked.
|
|
|
|
if (code_marker <= 0) return 0;
|
|
|
|
|
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;
|
|
|
|
|
2010-11-24 09:40:58 +00:00
|
|
|
return code_marker;
|
2010-04-27 11:16:05 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool LoadIC::PatchInlinedLoad(Address address, Object* map, int offset) {
|
2010-12-07 11:31:57 +00:00
|
|
|
if (V8::UseCrankshaft()) return false;
|
|
|
|
|
2010-04-27 11:16:05 +00:00
|
|
|
// Find the end of the inlined code for handling the load if this is an
|
|
|
|
// inlined IC call site.
|
|
|
|
Address inline_end_address;
|
2010-11-24 09:40:58 +00:00
|
|
|
if (InlinedICSiteMarker(address, &inline_end_address)
|
|
|
|
!= Assembler::PROPERTY_ACCESS_INLINED) {
|
|
|
|
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.
|
2010-11-24 09:40:58 +00:00
|
|
|
// For PROPERTY_ACCESS_INLINED, the load map instruction is generated
|
|
|
|
// 4 instructions before the end of the inlined code.
|
|
|
|
// See codgen-arm.cc CodeGenerator::EmitNamedLoad.
|
|
|
|
int ldr_map_offset = -4;
|
2010-04-27 11:16:05 +00:00
|
|
|
Address ldr_map_instr_address =
|
2010-11-24 09:40:58 +00:00
|
|
|
inline_end_address + ldr_map_offset * 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
|
|
|
|
2010-09-20 13:50:27 +00:00
|
|
|
bool LoadIC::PatchInlinedContextualLoad(Address address,
|
|
|
|
Object* map,
|
2010-09-30 17:39:31 +00:00
|
|
|
Object* cell,
|
|
|
|
bool is_dont_delete) {
|
2010-11-24 09:40:58 +00:00
|
|
|
// Find the end of the inlined code for handling the contextual load if
|
|
|
|
// this is inlined IC call site.
|
|
|
|
Address inline_end_address;
|
|
|
|
int marker = InlinedICSiteMarker(address, &inline_end_address);
|
|
|
|
if (!((marker == Assembler::PROPERTY_ACCESS_INLINED_CONTEXT) ||
|
|
|
|
(marker == Assembler::PROPERTY_ACCESS_INLINED_CONTEXT_DONT_DELETE))) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
// On ARM we don't rely on the is_dont_delete argument as the hint is already
|
|
|
|
// embedded in the code marker.
|
|
|
|
bool marker_is_dont_delete =
|
|
|
|
marker == Assembler::PROPERTY_ACCESS_INLINED_CONTEXT_DONT_DELETE;
|
|
|
|
|
|
|
|
// These are the offsets from the end of the inlined code.
|
|
|
|
// See codgen-arm.cc CodeGenerator::EmitNamedLoad.
|
|
|
|
int ldr_map_offset = marker_is_dont_delete ? -5: -8;
|
|
|
|
int ldr_cell_offset = marker_is_dont_delete ? -2: -5;
|
|
|
|
if (FLAG_debug_code && marker_is_dont_delete) {
|
|
|
|
// Three extra instructions were generated to check for the_hole_value.
|
|
|
|
ldr_map_offset -= 3;
|
|
|
|
ldr_cell_offset -= 3;
|
|
|
|
}
|
|
|
|
Address ldr_map_instr_address =
|
|
|
|
inline_end_address + ldr_map_offset * Assembler::kInstrSize;
|
|
|
|
Address ldr_cell_instr_address =
|
|
|
|
inline_end_address + ldr_cell_offset * Assembler::kInstrSize;
|
|
|
|
|
|
|
|
// Patch the map check.
|
|
|
|
Assembler::set_target_address_at(ldr_map_instr_address,
|
|
|
|
reinterpret_cast<Address>(map));
|
|
|
|
// Patch the cell address.
|
|
|
|
Assembler::set_target_address_at(ldr_cell_instr_address,
|
|
|
|
reinterpret_cast<Address>(cell));
|
|
|
|
|
|
|
|
return true;
|
2010-09-20 13:50:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-07-21 06:59:34 +00:00
|
|
|
bool StoreIC::PatchInlinedStore(Address address, Object* map, int offset) {
|
2010-12-07 11:31:57 +00:00
|
|
|
if (V8::UseCrankshaft()) return false;
|
|
|
|
|
2010-07-22 08:17:40 +00:00
|
|
|
// Find the end of the inlined code for the store if there is an
|
|
|
|
// inlined version of the store.
|
|
|
|
Address inline_end_address;
|
2010-11-24 09:40:58 +00:00
|
|
|
if (InlinedICSiteMarker(address, &inline_end_address)
|
|
|
|
!= Assembler::PROPERTY_ACCESS_INLINED) {
|
|
|
|
return false;
|
|
|
|
}
|
2010-07-22 08:17:40 +00:00
|
|
|
|
|
|
|
// Compute the address of the map load instruction.
|
|
|
|
Address ldr_map_instr_address =
|
|
|
|
inline_end_address -
|
|
|
|
(CodeGenerator::GetInlinedNamedStoreInstructionsAfterPatch() *
|
|
|
|
Assembler::kInstrSize);
|
|
|
|
|
|
|
|
// Update the offsets if initializing the inlined store. No reason
|
|
|
|
// to update the offsets when clearing the inlined version because
|
|
|
|
// it will bail out in the map check.
|
2011-03-18 18:49:56 +00:00
|
|
|
if (map != HEAP->null_value()) {
|
2010-07-22 08:17:40 +00:00
|
|
|
// Patch the offset in the actual store instruction.
|
|
|
|
Address str_property_instr_address =
|
|
|
|
ldr_map_instr_address + 3 * Assembler::kInstrSize;
|
|
|
|
Instr str_property_instr = Assembler::instr_at(str_property_instr_address);
|
|
|
|
ASSERT(Assembler::IsStrRegisterImmediate(str_property_instr));
|
|
|
|
str_property_instr = Assembler::SetStrRegisterImmediateOffset(
|
|
|
|
str_property_instr, offset - kHeapObjectTag);
|
|
|
|
Assembler::instr_at_put(str_property_instr_address, str_property_instr);
|
|
|
|
|
|
|
|
// Patch the offset in the add instruction that is part of the
|
|
|
|
// write barrier.
|
|
|
|
Address add_offset_instr_address =
|
2010-07-23 08:47:15 +00:00
|
|
|
str_property_instr_address + Assembler::kInstrSize;
|
2010-07-22 08:17:40 +00:00
|
|
|
Instr add_offset_instr = Assembler::instr_at(add_offset_instr_address);
|
|
|
|
ASSERT(Assembler::IsAddRegisterImmediate(add_offset_instr));
|
|
|
|
add_offset_instr = Assembler::SetAddRegisterImmediateOffset(
|
|
|
|
add_offset_instr, offset - kHeapObjectTag);
|
|
|
|
Assembler::instr_at_put(add_offset_instr_address, add_offset_instr);
|
|
|
|
|
|
|
|
// Indicate that code has changed.
|
2010-07-23 08:47:15 +00:00
|
|
|
CPU::FlushICache(str_property_instr_address, 2 * Assembler::kInstrSize);
|
2010-07-22 08:17:40 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// Patch the map check.
|
|
|
|
Assembler::set_target_address_at(ldr_map_instr_address,
|
|
|
|
reinterpret_cast<Address>(map));
|
|
|
|
|
|
|
|
return true;
|
2010-04-27 11:16:05 +00:00
|
|
|
}
|
2010-04-22 07:18:30 +00:00
|
|
|
|
|
|
|
|
2009-04-28 10:53:47 +00:00
|
|
|
bool KeyedLoadIC::PatchInlinedLoad(Address address, Object* map) {
|
2010-12-07 11:31:57 +00:00
|
|
|
if (V8::UseCrankshaft()) return false;
|
|
|
|
|
2010-04-27 11:16:05 +00:00
|
|
|
Address inline_end_address;
|
2010-11-24 09:40:58 +00:00
|
|
|
if (InlinedICSiteMarker(address, &inline_end_address)
|
|
|
|
!= Assembler::PROPERTY_ACCESS_INLINED) {
|
|
|
|
return false;
|
|
|
|
}
|
2010-04-27 11:16:05 +00:00
|
|
|
|
|
|
|
// Patch the map check.
|
|
|
|
Address ldr_map_instr_address =
|
2010-05-10 10:45:18 +00:00
|
|
|
inline_end_address -
|
2010-06-24 13:56:35 +00:00
|
|
|
(CodeGenerator::GetInlinedKeyedLoadInstructionsAfterPatch() *
|
2010-05-18 06:57:12 +00:00
|
|
|
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
|
|
|
|
2009-06-12 11:24:13 +00:00
|
|
|
bool KeyedStoreIC::PatchInlinedStore(Address address, Object* map) {
|
2010-12-07 11:31:57 +00:00
|
|
|
if (V8::UseCrankshaft()) return false;
|
|
|
|
|
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;
|
2010-11-24 09:40:58 +00:00
|
|
|
if (InlinedICSiteMarker(address, &inline_end_address)
|
|
|
|
!= Assembler::PROPERTY_ACCESS_INLINED) {
|
|
|
|
return false;
|
|
|
|
}
|
2010-04-28 11:14:31 +00:00
|
|
|
|
|
|
|
// 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
|
|
|
// -----------------------------------
|
|
|
|
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_load_miss(), 1, r3, r4);
|
2010-06-23 09:10:21 +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
|
|
|
// -----------------------------------
|
2010-08-05 10:45:07 +00:00
|
|
|
Label slow, check_string, index_smi, index_string, property_array_property;
|
2011-03-09 15:01:16 +00:00
|
|
|
Label 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 key is a smi.
|
2011-01-26 07:44:45 +00:00
|
|
|
__ JumpIfNotSmi(key, &check_string);
|
2010-06-01 21:11:38 +00:00
|
|
|
__ 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.
|
2010-06-16 10:03:47 +00:00
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
GenerateKeyedLoadReceiverCheck(
|
|
|
|
masm, receiver, r2, r3, Map::kHasIndexedInterceptor, &slow);
|
|
|
|
|
2010-08-16 16:06:46 +00:00
|
|
|
// Check the "has fast elements" bit in the receiver's map which is
|
|
|
|
// now in r2.
|
|
|
|
__ ldrb(r3, FieldMemOperand(r2, Map::kBitField2Offset));
|
|
|
|
__ tst(r3, Operand(1 << Map::kHasFastElements));
|
2011-03-09 15:01:16 +00:00
|
|
|
__ b(eq, &check_number_dictionary);
|
2010-08-16 16:06:46 +00:00
|
|
|
|
2010-06-16 10:03:47 +00:00
|
|
|
GenerateFastArrayLoad(
|
2010-08-16 16:06:46 +00:00
|
|
|
masm, receiver, key, r4, r3, r2, r0, NULL, &slow);
|
2011-03-18 18:49:56 +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
|
|
|
|
2010-03-26 09:05:22 +00:00
|
|
|
__ bind(&check_number_dictionary);
|
2011-03-09 15:01:16 +00:00
|
|
|
__ ldr(r4, FieldMemOperand(receiver, JSObject::kElementsOffset));
|
|
|
|
__ ldr(r3, FieldMemOperand(r4, JSObject::kMapOffset));
|
|
|
|
|
2010-03-26 09:05:22 +00:00
|
|
|
// 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));
|
2010-06-16 10:03:47 +00:00
|
|
|
GenerateNumberDictionaryLoad(masm, &slow, r4, r0, 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);
|
2011-03-18 18:49:56 +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);
|
2010-06-16 10:03:47 +00:00
|
|
|
GenerateKeyStringCheck(masm, key, r2, r3, &index_string, &slow);
|
2010-06-01 21:11:38 +00:00
|
|
|
|
2010-06-23 09:10:21 +00:00
|
|
|
GenerateKeyedLoadReceiverCheck(
|
|
|
|
masm, receiver, r2, r3, Map::kHasNamedInterceptor, &slow);
|
|
|
|
|
2010-06-01 21:11:38 +00:00
|
|
|
// If the receiver is a fast-case object, check the keyed lookup
|
|
|
|
// cache. Otherwise probe the dictionary.
|
|
|
|
__ ldr(r3, FieldMemOperand(r1, JSObject::kPropertiesOffset));
|
2010-06-23 09:10:21 +00:00
|
|
|
__ ldr(r4, FieldMemOperand(r3, HeapObject::kMapOffset));
|
2010-06-01 21:11:38 +00:00
|
|
|
__ LoadRoot(ip, Heap::kHashTableMapRootIndex);
|
2010-06-23 09:10:21 +00:00
|
|
|
__ cmp(r4, ip);
|
2010-06-01 21:11:38 +00:00
|
|
|
__ 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));
|
2010-06-14 11:20:36 +00:00
|
|
|
__ And(r3, r3, Operand(KeyedLookupCache::kCapacityMask));
|
2010-06-01 21:11:38 +00:00
|
|
|
|
|
|
|
// 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);
|
|
|
|
|
2010-08-05 10:45:07 +00:00
|
|
|
// Get field offset.
|
2010-06-01 21:11:38 +00:00
|
|
|
// 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));
|
2010-08-05 10:45:07 +00:00
|
|
|
__ sub(r5, r5, r6, SetCC);
|
|
|
|
__ b(ge, &property_array_property);
|
2010-06-01 21:11:38 +00:00
|
|
|
|
|
|
|
// Load in-object property.
|
|
|
|
__ 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));
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_load_generic_lookup_cache(), 1, r2, r3);
|
2010-06-01 21:11:38 +00:00
|
|
|
__ Ret();
|
|
|
|
|
2010-08-05 10:45:07 +00:00
|
|
|
// Load property array property.
|
|
|
|
__ bind(&property_array_property);
|
|
|
|
__ ldr(r1, FieldMemOperand(r1, JSObject::kPropertiesOffset));
|
|
|
|
__ add(r1, r1, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
|
|
|
|
__ ldr(r0, MemOperand(r1, r5, LSL, kPointerSizeLog2));
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_load_generic_lookup_cache(), 1, r2, r3);
|
2010-08-05 10:45:07 +00:00
|
|
|
__ Ret();
|
|
|
|
|
2010-06-01 21:11:38 +00:00
|
|
|
// Do a quick inline probe of the receiver's dictionary, if it
|
|
|
|
// exists.
|
|
|
|
__ bind(&probe_dictionary);
|
2010-06-23 09:10:21 +00:00
|
|
|
// r1: receiver
|
|
|
|
// r0: key
|
|
|
|
// r3: elements
|
|
|
|
__ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset));
|
|
|
|
__ ldrb(r2, FieldMemOperand(r2, Map::kInstanceTypeOffset));
|
|
|
|
GenerateGlobalInstanceTypeCheck(masm, r2, &slow);
|
2010-06-01 21:11:38 +00:00
|
|
|
// Load the property to r0.
|
2010-06-23 09:10:21 +00:00
|
|
|
GenerateDictionaryLoad(masm, &slow, r3, r0, r0, r2, r4);
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->keyed_load_generic_symbol(), 1, r2, r3);
|
2010-06-01 21:11:38 +00:00
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
__ bind(&index_string);
|
2010-08-27 11:47:12 +00:00
|
|
|
__ IndexFromHash(r3, key);
|
2010-06-01 21:11:38 +00:00
|
|
|
// 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;
|
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.
|
2010-09-16 09:18:08 +00:00
|
|
|
&miss, // When index out of range.
|
2010-05-26 14:23:19 +00:00
|
|
|
STRING_INDEX_IS_ARRAY_INDEX);
|
|
|
|
char_at_generator.GenerateFast(masm);
|
|
|
|
__ Ret();
|
|
|
|
|
2010-12-07 11:31:57 +00:00
|
|
|
StubRuntimeCallHelper call_helper;
|
2010-05-26 14:23:19 +00:00
|
|
|
char_at_generator.GenerateSlow(masm, call_helper);
|
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
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-02-12 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.
|
2011-01-26 07:44:45 +00:00
|
|
|
__ JumpIfSmi(r1, &slow);
|
2010-02-16 14:13:21 +00:00
|
|
|
|
2010-09-29 15:08:38 +00:00
|
|
|
// Check that the key is an array index, that is Uint32.
|
|
|
|
__ tst(r0, Operand(kSmiTagMask | kSmiSignMask));
|
|
|
|
__ b(ne, &slow);
|
2010-02-16 14:13:21 +00:00
|
|
|
|
|
|
|
// 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
|
|
|
}
|
|
|
|
|
|
|
|
|
2011-03-02 04:53:43 +00:00
|
|
|
void KeyedStoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm,
|
|
|
|
StrictModeFlag strict_mode) {
|
2010-02-08 16:08:26 +00:00
|
|
|
// ---------- 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
|
|
|
|
2011-03-02 04:53:43 +00:00
|
|
|
__ mov(r1, Operand(Smi::FromInt(NONE))); // PropertyAttributes
|
|
|
|
__ mov(r0, Operand(Smi::FromInt(strict_mode))); // Strict mode.
|
|
|
|
__ Push(r1, r0);
|
|
|
|
|
|
|
|
__ TailCallRuntime(Runtime::kSetProperty, 5, 1);
|
2008-07-03 15:10:15 +00:00
|
|
|
}
|
|
|
|
|
2008-11-13 01:18:31 +00:00
|
|
|
|
2011-03-02 04:53:43 +00:00
|
|
|
void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm,
|
|
|
|
StrictModeFlag strict_mode) {
|
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
|
|
|
// -----------------------------------
|
2011-03-09 15:01:16 +00:00
|
|
|
Label slow, fast, array, extra;
|
2010-05-18 06:57:12 +00:00
|
|
|
|
|
|
|
// 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));
|
2010-08-16 16:06:46 +00:00
|
|
|
// Check that the object is in fast mode and writable.
|
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);
|
2011-03-09 15:01:16 +00:00
|
|
|
__ b(ne, &slow);
|
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.
|
2011-03-02 04:53:43 +00:00
|
|
|
GenerateRuntimeSetProperty(masm, strict_mode);
|
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
|
2010-08-16 16:06:46 +00:00
|
|
|
// array. Check that the array is in fast mode (and writable); if it
|
|
|
|
// is the length is always a smi.
|
2008-11-20 16:59:00 +00:00
|
|
|
__ 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));
|
2010-06-17 10:45:37 +00:00
|
|
|
__ RecordWrite(elements, Operand(r4), r5, r6);
|
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
|
|
|
|
2011-02-13 16:19:53 +00:00
|
|
|
void StoreIC::GenerateMegamorphic(MacroAssembler* masm,
|
2011-03-02 04:53:43 +00:00
|
|
|
StrictModeFlag strict_mode) {
|
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
|
|
|
|
// -----------------------------------
|
|
|
|
|
|
|
|
// 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,
|
2011-02-13 16:19:53 +00:00
|
|
|
MONOMORPHIC,
|
2011-03-02 04:53:43 +00:00
|
|
|
strict_mode);
|
2011-03-18 18:49:56 +00:00
|
|
|
|
|
|
|
Isolate::Current()->stub_cache()->GenerateProbe(
|
|
|
|
masm, flags, r1, r2, r3, r4, r5);
|
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.
|
2011-01-26 07:44:45 +00:00
|
|
|
__ JumpIfSmi(receiver, &miss);
|
2010-02-18 17:30:32 +00:00
|
|
|
|
|
|
|
// Check that the object is a JS array.
|
|
|
|
__ CompareObjectType(receiver, scratch, scratch, JS_ARRAY_TYPE);
|
|
|
|
__ b(ne, &miss);
|
|
|
|
|
|
|
|
// Check that elements are FixedArray.
|
2010-08-16 16:06:46 +00:00
|
|
|
// We rely on StoreIC_ArrayLength below to deal with all types of
|
|
|
|
// fast elements (including COW).
|
2010-02-18 17:30:32 +00:00
|
|
|
__ ldr(scratch, FieldMemOperand(receiver, JSArray::kElementsOffset));
|
|
|
|
__ CompareObjectType(scratch, scratch, scratch, FIXED_ARRAY_TYPE);
|
|
|
|
__ b(ne, &miss);
|
|
|
|
|
|
|
|
// Check that value is a smi.
|
2011-01-26 07:44:45 +00:00
|
|
|
__ JumpIfNotSmi(value, &miss);
|
2010-02-18 17:30:32 +00:00
|
|
|
|
|
|
|
// 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);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-06-30 12:27:49 +00:00
|
|
|
void StoreIC::GenerateNormal(MacroAssembler* masm) {
|
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r0 : value
|
|
|
|
// -- r1 : receiver
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
Label miss;
|
|
|
|
|
|
|
|
GenerateStringDictionaryReceiverCheck(masm, r1, r3, r4, r5, &miss);
|
|
|
|
|
|
|
|
GenerateDictionaryStore(masm, &miss, r3, r2, r0, r4, r5);
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->store_normal_hit(), 1, r4, r5);
|
2010-06-30 12:27:49 +00:00
|
|
|
__ Ret();
|
|
|
|
|
|
|
|
__ bind(&miss);
|
2011-03-18 18:49:56 +00:00
|
|
|
__ IncrementCounter(COUNTERS->store_normal_miss(), 1, r4, r5);
|
2010-06-30 12:27:49 +00:00
|
|
|
GenerateMiss(masm);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2011-03-02 04:53:43 +00:00
|
|
|
void StoreIC::GenerateGlobalProxy(MacroAssembler* masm,
|
|
|
|
StrictModeFlag strict_mode) {
|
2010-12-07 11:31:57 +00:00
|
|
|
// ----------- S t a t e -------------
|
|
|
|
// -- r0 : value
|
|
|
|
// -- r1 : receiver
|
|
|
|
// -- r2 : name
|
|
|
|
// -- lr : return address
|
|
|
|
// -----------------------------------
|
|
|
|
|
|
|
|
__ Push(r1, r2, r0);
|
|
|
|
|
2011-03-02 04:53:43 +00:00
|
|
|
__ mov(r1, Operand(Smi::FromInt(NONE))); // PropertyAttributes
|
|
|
|
__ mov(r0, Operand(Smi::FromInt(strict_mode)));
|
|
|
|
__ Push(r1, r0);
|
|
|
|
|
2010-12-07 11:31:57 +00:00
|
|
|
// Do tail-call to runtime routine.
|
2011-03-02 04:53:43 +00:00
|
|
|
__ TailCallRuntime(Runtime::kSetProperty, 5, 1);
|
2010-12-07 11:31:57 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
#undef __
|
|
|
|
|
|
|
|
|
2010-12-07 11:31:57 +00:00
|
|
|
Condition CompareIC::ComputeCondition(Token::Value op) {
|
|
|
|
switch (op) {
|
|
|
|
case Token::EQ_STRICT:
|
|
|
|
case Token::EQ:
|
|
|
|
return eq;
|
|
|
|
case Token::LT:
|
|
|
|
return lt;
|
|
|
|
case Token::GT:
|
|
|
|
// Reverse left and right operands to obtain ECMA-262 conversion order.
|
|
|
|
return lt;
|
|
|
|
case Token::LTE:
|
|
|
|
// Reverse left and right operands to obtain ECMA-262 conversion order.
|
|
|
|
return ge;
|
|
|
|
case Token::GTE:
|
|
|
|
return ge;
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
2011-01-26 08:32:54 +00:00
|
|
|
return kNoCondition;
|
2010-12-07 11:31:57 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void CompareIC::UpdateCaches(Handle<Object> x, Handle<Object> y) {
|
|
|
|
HandleScope scope;
|
|
|
|
Handle<Code> rewritten;
|
|
|
|
State previous_state = GetState();
|
2010-12-15 13:56:41 +00:00
|
|
|
State state = TargetState(previous_state, false, x, y);
|
2010-12-07 11:31:57 +00:00
|
|
|
if (state == GENERIC) {
|
|
|
|
CompareStub stub(GetCondition(), strict(), NO_COMPARE_FLAGS, r1, r0);
|
|
|
|
rewritten = stub.GetCode();
|
|
|
|
} else {
|
|
|
|
ICCompareStub stub(op_, state);
|
|
|
|
rewritten = stub.GetCode();
|
|
|
|
}
|
|
|
|
set_target(*rewritten);
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
if (FLAG_trace_ic) {
|
|
|
|
PrintF("[CompareIC (%s->%s)#%s]\n",
|
|
|
|
GetStateName(previous_state),
|
|
|
|
GetStateName(state),
|
|
|
|
Token::Name(op_));
|
|
|
|
}
|
|
|
|
#endif
|
2011-02-09 14:57:24 +00:00
|
|
|
|
|
|
|
// Activate inlined smi code.
|
|
|
|
if (previous_state == UNINITIALIZED) {
|
|
|
|
PatchInlinedSmiCode(address());
|
|
|
|
}
|
2010-12-07 11:31:57 +00:00
|
|
|
}
|
|
|
|
|
2010-12-15 13:56:41 +00:00
|
|
|
|
|
|
|
void PatchInlinedSmiCode(Address address) {
|
2011-02-09 14:57:24 +00:00
|
|
|
Address cmp_instruction_address =
|
|
|
|
address + Assembler::kCallTargetAddressOffset;
|
|
|
|
|
|
|
|
// If the instruction following the call is not a cmp rx, #yyy, nothing
|
|
|
|
// was inlined.
|
|
|
|
Instr instr = Assembler::instr_at(cmp_instruction_address);
|
|
|
|
if (!Assembler::IsCmpImmediate(instr)) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
// The delta to the start of the map check instruction and the
|
|
|
|
// condition code uses at the patched jump.
|
|
|
|
int delta = Assembler::GetCmpImmediateRawImmediate(instr);
|
|
|
|
delta +=
|
|
|
|
Assembler::GetCmpImmediateRegister(instr).code() * kOff12Mask;
|
|
|
|
// If the delta is 0 the instruction is cmp r0, #0 which also signals that
|
|
|
|
// nothing was inlined.
|
|
|
|
if (delta == 0) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
if (FLAG_trace_ic) {
|
|
|
|
PrintF("[ patching ic at %p, cmp=%p, delta=%d\n",
|
|
|
|
address, cmp_instruction_address, delta);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
Address patch_address =
|
|
|
|
cmp_instruction_address - delta * Instruction::kInstrSize;
|
|
|
|
Instr instr_at_patch = Assembler::instr_at(patch_address);
|
|
|
|
Instr branch_instr =
|
|
|
|
Assembler::instr_at(patch_address + Instruction::kInstrSize);
|
|
|
|
ASSERT(Assembler::IsCmpRegister(instr_at_patch));
|
|
|
|
ASSERT_EQ(Assembler::GetRn(instr_at_patch).code(),
|
|
|
|
Assembler::GetRm(instr_at_patch).code());
|
|
|
|
ASSERT(Assembler::IsBranch(branch_instr));
|
|
|
|
if (Assembler::GetCondition(branch_instr) == eq) {
|
|
|
|
// This is patching a "jump if not smi" site to be active.
|
|
|
|
// Changing
|
|
|
|
// cmp rx, rx
|
|
|
|
// b eq, <target>
|
|
|
|
// to
|
|
|
|
// tst rx, #kSmiTagMask
|
|
|
|
// b ne, <target>
|
|
|
|
CodePatcher patcher(patch_address, 2);
|
|
|
|
Register reg = Assembler::GetRn(instr_at_patch);
|
|
|
|
patcher.masm()->tst(reg, Operand(kSmiTagMask));
|
|
|
|
patcher.EmitCondition(ne);
|
|
|
|
} else {
|
|
|
|
ASSERT(Assembler::GetCondition(branch_instr) == ne);
|
|
|
|
// This is patching a "jump if smi" site to be active.
|
|
|
|
// Changing
|
|
|
|
// cmp rx, rx
|
|
|
|
// b ne, <target>
|
|
|
|
// to
|
|
|
|
// tst rx, #kSmiTagMask
|
|
|
|
// b eq, <target>
|
|
|
|
CodePatcher patcher(patch_address, 2);
|
|
|
|
Register reg = Assembler::GetRn(instr_at_patch);
|
|
|
|
patcher.masm()->tst(reg, Operand(kSmiTagMask));
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patcher.EmitCondition(eq);
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}
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2010-12-15 13:56:41 +00:00
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}
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2008-07-03 15:10:15 +00:00
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} } // namespace v8::internal
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2010-05-17 15:41:35 +00:00
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#endif // V8_TARGET_ARCH_ARM
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