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Change the StackGuard runtime function to take no arguments.

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For some reason the StackGuard runtime function took a dummy argument
that it always ignored.  Change it to take no arguments.

Review URL: http://codereview.chromium.org/3838003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5660 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
kmillikin@chromium.org 2010-10-19 11:14:03 +00:00
parent 00e23b719d
commit f2789a903b
5 changed files with 5 additions and 29 deletions
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8
src/arm/code-stubs-arm.cc
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@ -2297,13 +2297,7 @@ Runtime::FunctionId TranscendentalCacheStub::RuntimeFunction() {
void StackCheckStub::Generate(MacroAssembler* masm) {
// Do tail-call to runtime routine. Runtime routines expect at least one
// argument, so give it a Smi.
__ mov(r0, Operand(Smi::FromInt(0)));
__ push(r0);
__ TailCallRuntime(Runtime::kStackGuard, 1, 1);
__ Ret();
__ TailCallRuntime(Runtime::kStackGuard, 0, 1);
}

11
src/ia32/code-stubs-ia32.cc
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@ -2964,16 +2964,7 @@ void CompareStub::BranchIfNonSymbol(MacroAssembler* masm,
void StackCheckStub::Generate(MacroAssembler* masm) {
// Because builtins always remove the receiver from the stack, we
// have to fake one to avoid underflowing the stack. The receiver
// must be inserted below the return address on the stack so we
// temporarily store that in a register.
__ pop(eax);
__ push(Immediate(Smi::FromInt(0)));
__ push(eax);
// Do tail-call to runtime routine.
__ TailCallRuntime(Runtime::kStackGuard, 1, 1);
__ TailCallRuntime(Runtime::kStackGuard, 0, 1);
}

2
src/runtime.cc
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@ -6703,7 +6703,7 @@ static Object* Runtime_StackOverflow(Arguments args) {
static Object* Runtime_StackGuard(Arguments args) {
ASSERT(args.length() == 1);
ASSERT(args.length() == 0);
// First check if this is a real stack overflow.
if (StackGuard::IsStackOverflow()) {

2
src/runtime.h
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@ -267,7 +267,7 @@ namespace internal {
F(Throw, 1, 1) \
F(ReThrow, 1, 1) \
F(ThrowReferenceError, 1, 1) \
F(StackGuard, 1, 1) \
F(StackGuard, 0, 1) \
F(PromoteScheduledException, 0, 1) \
\
/* Contexts */ \

11
src/x64/code-stubs-x64.cc
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@ -2394,16 +2394,7 @@ void CompareStub::BranchIfNonSymbol(MacroAssembler* masm,
void StackCheckStub::Generate(MacroAssembler* masm) {
// Because builtins always remove the receiver from the stack, we
// have to fake one to avoid underflowing the stack. The receiver
// must be inserted below the return address on the stack so we
// temporarily store that in a register.
__ pop(rax);
__ Push(Smi::FromInt(0));
__ push(rax);
// Do tail-call to runtime routine.
__ TailCallRuntime(Runtime::kStackGuard, 1, 1);
__ TailCallRuntime(Runtime::kStackGuard, 0, 1);
}