Index: src/ia32/builtins-ia32.cc |
diff --git a/src/ia32/builtins-ia32.cc b/src/ia32/builtins-ia32.cc |
index 785c5fd61c219e1d87555f21c0d084e4f9d3a7a6..61c3f23cb0a14079491cae93ae02e86e858bbc14 100644 |
--- a/src/ia32/builtins-ia32.cc |
+++ b/src/ia32/builtins-ia32.cc |
@@ -1252,6 +1252,33 @@ void Builtins::Generate_StringConstructCode(MacroAssembler* masm) { |
} |
+static void ArgumentsAdaptorStackCheck(MacroAssembler* masm, |
+ Label* stack_overflow) { |
+ // ----------- S t a t e ------------- |
+ // -- eax : actual number of arguments |
+ // -- ebx : expected number of arguments |
+ // -- edi : function (passed through to callee) |
+ // ----------------------------------- |
+ // Check the stack for overflow. We are not trying to catch |
+ // interruptions (e.g. debug break and preemption) here, so the "real stack |
+ // limit" is checked. |
+ ExternalReference real_stack_limit = |
+ ExternalReference::address_of_real_stack_limit(masm->isolate()); |
+ __ mov(edx, Operand::StaticVariable(real_stack_limit)); |
+ // Make ecx the space we have left. The stack might already be overflowed |
+ // here which will cause ecx to become negative. |
+ __ mov(ecx, esp); |
+ __ sub(ecx, edx); |
+ // Make edx the space we need for the array when it is unrolled onto the |
+ // stack. |
+ __ mov(edx, ebx); |
+ __ shl(edx, kPointerSizeLog2); |
+ // Check if the arguments will overflow the stack. |
+ __ cmp(ecx, edx); |
+ __ j(less_equal, stack_overflow); // Signed comparison. |
+} |
+ |
+ |
static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { |
__ push(ebp); |
__ mov(ebp, esp); |
@@ -1296,6 +1323,9 @@ void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
Label invoke, dont_adapt_arguments; |
__ IncrementCounter(masm->isolate()->counters()->arguments_adaptors(), 1); |
+ Label stack_overflow; |
+ ArgumentsAdaptorStackCheck(masm, &stack_overflow); |
+ |
Label enough, too_few; |
__ mov(edx, FieldOperand(edi, JSFunction::kCodeEntryOffset)); |
__ cmp(eax, ebx); |
@@ -1370,6 +1400,10 @@ void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
// ------------------------------------------- |
__ bind(&dont_adapt_arguments); |
__ jmp(edx); |
+ |
+ __ bind(&stack_overflow); |
+ EnterArgumentsAdaptorFrame(masm); |
+ __ InvokeBuiltin(Builtins::STACK_OVERFLOW, JUMP_FUNCTION); |
Michael Starzinger
2014/04/08 11:58:40
The assumption is that this invocation never retur
ulan
2014/04/08 14:00:56
Done.
|
} |