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Unified Diff: src/mips64/builtins-mips64.cc

Issue 2118283003: [builtins] Construct builtin frame in String/Number ctors (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@20160630-tostringtag
Patch Set: Remove TODO Created 4 years, 5 months ago
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Index: src/mips64/builtins-mips64.cc
diff --git a/src/mips64/builtins-mips64.cc b/src/mips64/builtins-mips64.cc
index c92d6b4eef31fa29766a70f15ff93aa53ea5a141..bd9c5b33384bfc34de5d512724e3abf94d2d1eb1 100644
--- a/src/mips64/builtins-mips64.cc
+++ b/src/mips64/builtins-mips64.cc
@@ -167,16 +167,17 @@ void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
{
// Parameter is not a Number, use the ToNumber builtin to convert it.
FrameScope scope(masm, StackFrame::MANUAL);
- __ Push(ra, fp);
- __ Move(fp, sp);
- __ Push(cp, a1);
__ SmiTag(a0);
__ SmiTag(a3);
- __ Push(a0, t1, a3);
+ __ EnterBuiltinFrame(cp, a1, a0);
+ __ Push(t1, a3);
__ mov(a0, a2);
__ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
__ mov(a2, v0);
- __ Pop(a0, t1, a3);
+ __ Pop(t1, a3);
+ __ LeaveBuiltinFrame(cp, a1, a0);
+ __ SmiUntag(a3);
+ __ SmiUntag(a0);
{
// Restore the double accumulator value (f0).
Label restore_smi, done_restore;
@@ -187,10 +188,6 @@ void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
__ SmiToDoubleFPURegister(t1, f0, a4);
__ bind(&done_restore);
}
- __ SmiUntag(a3);
- __ SmiUntag(a0);
- __ Pop(cp, a1);
- __ Pop(ra, fp);
}
__ jmp(&convert);
__ bind(&convert_number);
@@ -238,6 +235,7 @@ void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
// ----------- S t a t e -------------
// -- a0 : number of arguments
// -- a1 : constructor function
+ // -- cp : context
// -- ra : return address
// -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
// -- sp[argc * 8] : receiver
@@ -248,14 +246,27 @@ void Builtins::Generate_NumberConstructor(MacroAssembler* masm) {
Label no_arguments;
{
__ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg));
- __ Dsubu(a0, a0, Operand(1));
- __ Dlsa(sp, sp, a0, kPointerSizeLog2);
- __ ld(a0, MemOperand(sp));
- __ Drop(2);
+ __ Dsubu(t1, a0, Operand(1)); // In delay slot.
+ __ mov(t0, a0); // Store argc in t0.
+ __ Dlsa(at, sp, t1, kPointerSizeLog2);
+ __ ld(a0, MemOperand(at));
}
// 2a. Convert first argument to number.
- __ Jump(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
+ {
+ FrameScope scope(masm, StackFrame::MANUAL);
+ __ SmiTag(t0);
+ __ EnterBuiltinFrame(cp, a1, t0);
+ __ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
+ __ LeaveBuiltinFrame(cp, a1, t0);
+ __ SmiUntag(t0);
+ }
+
+ {
+ // Drop all arguments including the receiver.
+ __ Dlsa(sp, sp, t0, kPointerSizeLog2);
+ __ DropAndRet(1);
+ }
// 2b. No arguments, return +0.
__ bind(&no_arguments);
@@ -269,6 +280,7 @@ void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
// -- a0 : number of arguments
// -- a1 : constructor function
// -- a3 : new target
+ // -- cp : context
// -- ra : return address
// -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
// -- sp[argc * 8] : receiver
@@ -281,15 +293,14 @@ void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
// receiver).
{
Label no_arguments, done;
+ __ mov(t0, a0); // Store argc in t0.
__ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg));
- __ Dsubu(a0, a0, Operand(1));
- __ Dlsa(sp, sp, a0, kPointerSizeLog2);
- __ ld(a0, MemOperand(sp));
- __ Drop(2);
+ __ Dsubu(a0, a0, Operand(1)); // In delay slot.
+ __ Dlsa(at, sp, a0, kPointerSizeLog2);
+ __ ld(a0, MemOperand(at));
__ jmp(&done);
__ bind(&no_arguments);
__ Move(a0, Smi::FromInt(0));
- __ Drop(1);
__ bind(&done);
}
@@ -298,36 +309,49 @@ void Builtins::Generate_NumberConstructor_ConstructStub(MacroAssembler* masm) {
Label done_convert;
__ JumpIfSmi(a0, &done_convert);
__ GetObjectType(a0, a2, a2);
- __ Branch(&done_convert, eq, t0, Operand(HEAP_NUMBER_TYPE));
+ __ Branch(&done_convert, eq, a2, Operand(HEAP_NUMBER_TYPE));
{
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ Push(a1, a3);
+ FrameScope scope(masm, StackFrame::MANUAL);
+ __ SmiTag(t0);
+ __ EnterBuiltinFrame(cp, a1, t0);
+ __ Push(a3);
__ Call(masm->isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET);
__ Move(a0, v0);
- __ Pop(a1, a3);
+ __ Pop(a3);
+ __ LeaveBuiltinFrame(cp, a1, t0);
+ __ SmiUntag(t0);
}
__ bind(&done_convert);
}
// 4. Check if new target and constructor differ.
- Label new_object;
+ Label drop_frame_and_ret, new_object;
__ Branch(&new_object, ne, a1, Operand(a3));
// 5. Allocate a JSValue wrapper for the number.
- __ AllocateJSValue(v0, a1, a0, a2, t0, &new_object);
- __ Ret();
+ __ AllocateJSValue(v0, a1, a0, a2, t1, &new_object);
+ __ jmp(&drop_frame_and_ret);
// 6. Fallback to the runtime to create new object.
__ bind(&new_object);
{
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ Push(a0);
+ FrameScope scope(masm, StackFrame::MANUAL);
FastNewObjectStub stub(masm->isolate());
+ __ SmiTag(t0);
+ __ EnterBuiltinFrame(cp, a1, t0);
+ __ Push(a0);
__ CallStub(&stub);
__ Pop(a0);
+ __ LeaveBuiltinFrame(cp, a1, t0);
+ __ SmiUntag(t0);
+ }
+ __ sd(a0, FieldMemOperand(v0, JSValue::kValueOffset));
+
+ __ bind(&drop_frame_and_ret);
+ {
+ __ Dlsa(sp, sp, t0, kPointerSizeLog2);
+ __ DropAndRet(1);
}
- __ Ret(USE_DELAY_SLOT);
- __ sd(a0, FieldMemOperand(v0, JSValue::kValueOffset)); // In delay slot.
}
@@ -336,6 +360,7 @@ void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
// ----------- S t a t e -------------
// -- a0 : number of arguments
// -- a1 : constructor function
+ // -- cp : context
// -- ra : return address
// -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
// -- sp[argc * 8] : receiver
@@ -346,24 +371,24 @@ void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
Label no_arguments;
{
__ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg));
- __ Dsubu(a0, a0, Operand(1));
- __ Dlsa(sp, sp, a0, kPointerSizeLog2);
- __ ld(a0, MemOperand(sp));
- __ Drop(2);
+ __ Dsubu(t1, a0, Operand(1)); // In delay slot.
+ __ mov(t0, a0); // Store argc in t0.
+ __ Dlsa(at, sp, t1, kPointerSizeLog2);
+ __ ld(a0, MemOperand(at));
}
// 2a. At least one argument, return a0 if it's a string, otherwise
// dispatch to appropriate conversion.
- Label to_string, symbol_descriptive_string;
+ Label drop_frame_and_ret, to_string, symbol_descriptive_string;
{
__ JumpIfSmi(a0, &to_string);
- __ GetObjectType(a0, a1, a1);
+ __ GetObjectType(a0, t1, t1);
STATIC_ASSERT(FIRST_NONSTRING_TYPE == SYMBOL_TYPE);
- __ Subu(a1, a1, Operand(FIRST_NONSTRING_TYPE));
- __ Branch(&symbol_descriptive_string, eq, a1, Operand(zero_reg));
- __ Branch(&to_string, gt, a1, Operand(zero_reg));
- __ Ret(USE_DELAY_SLOT);
+ __ Subu(t1, t1, Operand(FIRST_NONSTRING_TYPE));
+ __ Branch(&symbol_descriptive_string, eq, t1, Operand(zero_reg));
+ __ Branch(&to_string, gt, t1, Operand(zero_reg));
__ mov(v0, a0);
+ __ jmp(&drop_frame_and_ret);
}
// 2b. No arguments, return the empty string (and pop the receiver).
@@ -376,16 +401,30 @@ void Builtins::Generate_StringConstructor(MacroAssembler* masm) {
// 3a. Convert a0 to a string.
__ bind(&to_string);
{
+ FrameScope scope(masm, StackFrame::MANUAL);
ToStringStub stub(masm->isolate());
- __ TailCallStub(&stub);
+ __ SmiTag(t0);
+ __ EnterBuiltinFrame(cp, a1, t0);
+ __ CallStub(&stub);
+ __ LeaveBuiltinFrame(cp, a1, t0);
+ __ SmiUntag(t0);
}
+ __ jmp(&drop_frame_and_ret);
// 3b. Convert symbol in a0 to a string.
__ bind(&symbol_descriptive_string);
{
+ __ Dlsa(sp, sp, t0, kPointerSizeLog2);
+ __ Drop(1);
__ Push(a0);
__ TailCallRuntime(Runtime::kSymbolDescriptiveString);
}
+
+ __ bind(&drop_frame_and_ret);
+ {
+ __ Dlsa(sp, sp, t0, kPointerSizeLog2);
+ __ DropAndRet(1);
+ }
}
@@ -394,6 +433,7 @@ void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
// -- a0 : number of arguments
// -- a1 : constructor function
// -- a3 : new target
+ // -- cp : context
// -- ra : return address
// -- sp[(argc - n - 1) * 8] : arg[n] (zero based)
// -- sp[argc * 8] : receiver
@@ -406,15 +446,14 @@ void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
// receiver).
{
Label no_arguments, done;
+ __ mov(t0, a0); // Store argc in t0.
__ Branch(USE_DELAY_SLOT, &no_arguments, eq, a0, Operand(zero_reg));
__ Dsubu(a0, a0, Operand(1));
- __ Dlsa(sp, sp, a0, kPointerSizeLog2);
- __ ld(a0, MemOperand(sp));
- __ Drop(2);
+ __ Dlsa(at, sp, a0, kPointerSizeLog2);
+ __ ld(a0, MemOperand(at));
__ jmp(&done);
__ bind(&no_arguments);
__ LoadRoot(a0, Heap::kempty_stringRootIndex);
- __ Drop(1);
__ bind(&done);
}
@@ -423,39 +462,52 @@ void Builtins::Generate_StringConstructor_ConstructStub(MacroAssembler* masm) {
Label convert, done_convert;
__ JumpIfSmi(a0, &convert);
__ GetObjectType(a0, a2, a2);
- __ And(t0, a2, Operand(kIsNotStringMask));
- __ Branch(&done_convert, eq, t0, Operand(zero_reg));
+ __ And(t1, a2, Operand(kIsNotStringMask));
+ __ Branch(&done_convert, eq, t1, Operand(zero_reg));
__ bind(&convert);
{
- FrameScope scope(masm, StackFrame::INTERNAL);
+ FrameScope scope(masm, StackFrame::MANUAL);
ToStringStub stub(masm->isolate());
- __ Push(a1, a3);
+ __ SmiTag(t0);
+ __ EnterBuiltinFrame(cp, a1, t0);
+ __ Push(a3);
__ CallStub(&stub);
__ Move(a0, v0);
- __ Pop(a1, a3);
+ __ Pop(a3);
+ __ LeaveBuiltinFrame(cp, a1, t0);
+ __ SmiUntag(t0);
}
__ bind(&done_convert);
}
// 4. Check if new target and constructor differ.
- Label new_object;
+ Label drop_frame_and_ret, new_object;
__ Branch(&new_object, ne, a1, Operand(a3));
// 5. Allocate a JSValue wrapper for the string.
- __ AllocateJSValue(v0, a1, a0, a2, t0, &new_object);
- __ Ret();
+ __ AllocateJSValue(v0, a1, a0, a2, t1, &new_object);
+ __ jmp(&drop_frame_and_ret);
// 6. Fallback to the runtime to create new object.
__ bind(&new_object);
{
- FrameScope scope(masm, StackFrame::INTERNAL);
- __ Push(a0);
+ FrameScope scope(masm, StackFrame::MANUAL);
FastNewObjectStub stub(masm->isolate());
+ __ SmiTag(t0);
+ __ EnterBuiltinFrame(cp, a1, t0);
+ __ Push(a0);
__ CallStub(&stub);
__ Pop(a0);
+ __ LeaveBuiltinFrame(cp, a1, t0);
+ __ SmiUntag(t0);
+ }
+ __ sd(a0, FieldMemOperand(v0, JSValue::kValueOffset));
+
+ __ bind(&drop_frame_and_ret);
+ {
+ __ Dlsa(sp, sp, t0, kPointerSizeLog2);
+ __ DropAndRet(1);
}
- __ Ret(USE_DELAY_SLOT);
- __ sd(a0, FieldMemOperand(v0, JSValue::kValueOffset)); // In delay slot.
}
static void GenerateTailCallToSharedCode(MacroAssembler* masm) {
@@ -1788,10 +1840,9 @@ void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm,
__ bind(&receiver_not_date);
{
FrameScope scope(masm, StackFrame::MANUAL);
- __ Push(a0, ra, fp);
- __ Move(fp, sp);
- __ Push(cp, a1);
- __ Push(Smi::FromInt(0));
+ __ Push(a0);
+ __ Move(a0, Smi::FromInt(0));
+ __ EnterBuiltinFrame(cp, a1, a0);
__ CallRuntime(Runtime::kThrowNotDateError);
}
}
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