[runtime] Unify and simplify how frames are marked

src/arm/deoptimizer-arm.cc

Index: src/arm/deoptimizer-arm.cc
diff --git a/src/arm/deoptimizer-arm.cc b/src/arm/deoptimizer-arm.cc
index 21436ff550bfacfbbacf4c60b36426f008b2bf1a..3ea7222dfe90d9211bffa37966ad661235a32615 100644
--- a/src/arm/deoptimizer-arm.cc
+++ b/src/arm/deoptimizer-arm.cc
@@ -156,7 +156,12 @@ void Deoptimizer::TableEntryGenerator::Generate() {
   // Allocate a new deoptimizer object.
   // Pass four arguments in r0 to r3 and fifth argument on stack.
   __ PrepareCallCFunction(6, r5);
+  __ mov(r0, Operand(0));
+  Label context_check;
+  __ ldr(r1, MemOperand(fp, CommonFrameConstants::kContextOrFrameTypeOffset));
+  __ JumpIfSmi(r1, &context_check);
   __ ldr(r0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
+  __ bind(&context_check);
   __ mov(r1, Operand(type()));  // bailout type,
   // r2: bailout id already loaded.
   // r3: code address or 0 already loaded.