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Unified Diff: src/ia32/code-stubs-ia32.cc

Issue 1884883003: Revert of [Atomics] code stubs for atomic operations (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 8 months ago
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Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 52f1d94e966752dbcd677be3eac7163f9e5257c8..74bd0cfc403b4f8b4a1c3ee89e030820ccf787c1 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -5839,175 +5839,6 @@
return_value_operand, NULL);
}
-namespace {
-
-void GetTypedArrayBackingStore(MacroAssembler* masm, Register backing_store,
- Register object, Register scratch) {
- Label offset_is_not_smi, done;
- __ mov(scratch, FieldOperand(object, JSTypedArray::kBufferOffset));
- __ mov(backing_store,
- FieldOperand(scratch, JSArrayBuffer::kBackingStoreOffset));
-
- __ mov(scratch, FieldOperand(object, JSArrayBufferView::kByteOffsetOffset));
- __ JumpIfNotSmi(scratch, &offset_is_not_smi, Label::kNear);
- // Offset is smi.
- __ SmiUntag(scratch);
- __ add(backing_store, scratch);
- __ jmp(&done, Label::kNear);
-
- // Offset is a heap number.
- __ bind(&offset_is_not_smi);
- __ movsd(xmm0, FieldOperand(scratch, HeapNumber::kValueOffset));
- __ cvttsd2si(scratch, xmm0);
- __ add(backing_store, scratch);
- __ bind(&done);
-}
-
-void TypedArrayJumpTablePrologue(MacroAssembler* masm, Register object,
- Register scratch, Register scratch2,
- Label* table) {
- __ mov(scratch, FieldOperand(object, JSObject::kElementsOffset));
- __ mov(scratch, FieldOperand(scratch, HeapObject::kMapOffset));
- __ movzx_b(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset));
- __ sub(scratch, Immediate(static_cast<uint8_t>(FIXED_INT8_ARRAY_TYPE)));
- __ Assert(above_equal, kOffsetOutOfRange);
- __ jmp(Operand::JumpTable(scratch, times_4, table));
-}
-
-void TypedArrayJumpTableEpilogue(MacroAssembler* masm, Label* table, Label* i8,
- Label* u8, Label* i16, Label* u16, Label* i32,
- Label* u32, Label* u8c) {
- STATIC_ASSERT(FIXED_UINT8_ARRAY_TYPE == FIXED_INT8_ARRAY_TYPE + 1);
- STATIC_ASSERT(FIXED_INT16_ARRAY_TYPE == FIXED_INT8_ARRAY_TYPE + 2);
- STATIC_ASSERT(FIXED_UINT16_ARRAY_TYPE == FIXED_INT8_ARRAY_TYPE + 3);
- STATIC_ASSERT(FIXED_INT32_ARRAY_TYPE == FIXED_INT8_ARRAY_TYPE + 4);
- STATIC_ASSERT(FIXED_UINT32_ARRAY_TYPE == FIXED_INT8_ARRAY_TYPE + 5);
- STATIC_ASSERT(FIXED_FLOAT32_ARRAY_TYPE == FIXED_INT8_ARRAY_TYPE + 6);
- STATIC_ASSERT(FIXED_FLOAT64_ARRAY_TYPE == FIXED_INT8_ARRAY_TYPE + 7);
- STATIC_ASSERT(FIXED_UINT8_CLAMPED_ARRAY_TYPE == FIXED_INT8_ARRAY_TYPE + 8);
-
- Label abort;
- __ bind(table);
- __ dd(i8); // Int8Array
- __ dd(u8); // Uint8Array
- __ dd(i16); // Int16Array
- __ dd(u16); // Uint16Array
- __ dd(i32); // Int32Array
- __ dd(u32); // Uint32Array
- __ dd(&abort); // Float32Array
- __ dd(&abort); // Float64Array
- __ dd(u8c); // Uint8ClampedArray
-
- __ bind(&abort);
- __ Abort(kNoReason);
-}
-
-void ReturnInteger32(MacroAssembler* masm, XMMRegister dst, Register value,
- Register scratch, Label* use_heap_number) {
- Label not_smi;
- if (!value.is(eax)) {
- __ mov(eax, value);
- }
- __ JumpIfNotValidSmiValue(eax, scratch, &not_smi, Label::kNear);
- __ SmiTag(eax);
- __ Ret();
-
- __ bind(&not_smi);
- __ Cvtsi2sd(dst, eax);
- __ jmp(use_heap_number);
-}
-
-void ReturnUnsignedInteger32(MacroAssembler* masm, XMMRegister dst,
- Register value, XMMRegister scratch,
- Label* use_heap_number) {
- Label not_smi;
- if (!value.is(eax)) {
- __ mov(eax, value);
- }
- __ JumpIfUIntNotValidSmiValue(eax, &not_smi, Label::kNear);
- __ SmiTag(eax);
- __ Ret();
-
- __ bind(&not_smi);
- // Convert [0, 2**32-1] -> [-2**31, 2**31-1].
- __ add(eax, Immediate(-0x7fffffff - 1)); // -0x80000000 parses incorrectly.
- __ Cvtsi2sd(dst, eax);
- __ mov(eax, Immediate(0x4f000000)); // 2**31 as IEEE float
- __ movd(scratch, eax);
- __ cvtss2sd(scratch, scratch);
- __ addsd(dst, scratch);
- __ jmp(use_heap_number);
-}
-
-void ReturnAllocatedHeapNumber(MacroAssembler* masm, XMMRegister value,
- Register scratch, Register scratch2) {
- Label call_runtime;
- __ AllocateHeapNumber(eax, scratch, scratch2, &call_runtime);
- __ movsd(FieldOperand(eax, HeapNumber::kValueOffset), value);
- __ Ret();
-
- __ bind(&call_runtime);
- {
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber);
- __ movsd(FieldOperand(eax, HeapNumber::kValueOffset), value);
- }
- __ Ret();
-}
-
-} // anonymous namespace
-
-void AtomicsLoadStub::Generate(MacroAssembler* masm) {
- Register object = edx;
- Register index = eax; // Index is an untagged word32.
- Register backing_store = ebx;
- Label table;
-
- GetTypedArrayBackingStore(masm, backing_store, object, ecx);
- TypedArrayJumpTablePrologue(masm, object, ecx, esi, &table);
-
- Label i8, u8, i16, u16, i32, u32;
-
- __ bind(&i8);
- __ mov_b(eax, Operand(backing_store, index, times_1, 0));
- __ movsx_b(eax, eax);
- __ SmiTag(eax);
- __ Ret();
-
- __ bind(&u8);
- __ mov_b(eax, Operand(backing_store, index, times_1, 0));
- __ movzx_b(eax, eax);
- __ SmiTag(eax);
- __ Ret();
-
- __ bind(&i16);
- __ mov_w(eax, Operand(backing_store, index, times_2, 0));
- __ movsx_w(eax, eax);
- __ SmiTag(eax);
- __ Ret();
-
- __ bind(&u16);
- __ mov_w(eax, Operand(backing_store, index, times_2, 0));
- __ movzx_w(eax, eax);
- __ SmiTag(eax);
- __ Ret();
-
- Label use_heap_number;
-
- __ bind(&i32);
- __ mov(eax, Operand(backing_store, index, times_4, 0));
- ReturnInteger32(masm, xmm0, eax, ecx, &use_heap_number);
-
- __ bind(&u32);
- __ mov(eax, Operand(backing_store, index, times_4, 0));
- ReturnUnsignedInteger32(masm, xmm0, eax, xmm1, &use_heap_number);
-
- __ bind(&use_heap_number);
- ReturnAllocatedHeapNumber(masm, xmm0, ecx, edx);
-
- TypedArrayJumpTableEpilogue(masm, &table, &i8, &u8, &i16, &u16, &i32, &u32,
- &u8);
-}
#undef __
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