X87: [builtins] New frame type for exits to C++ builtins.

src/x87/macro-assembler-x87.cc

Index: src/x87/macro-assembler-x87.cc
diff --git a/src/x87/macro-assembler-x87.cc b/src/x87/macro-assembler-x87.cc
index a75fc5fa98bd1403bcdd8ff4d53a7485f505c0ca..62501d7a70842686f5fef7b2b0cd0bc3b2beda70 100644
--- a/src/x87/macro-assembler-x87.cc
+++ b/src/x87/macro-assembler-x87.cc
@@ -1078,8 +1078,10 @@ void MacroAssembler::LeaveFrame(StackFrame::Type type) {
   leave();
 }
 
+void MacroAssembler::EnterExitFramePrologue(StackFrame::Type frame_type) {
+  DCHECK(frame_type == StackFrame::EXIT ||
+         frame_type == StackFrame::BUILTIN_EXIT);
 
-void MacroAssembler::EnterExitFramePrologue() {
   // Set up the frame structure on the stack.
   DCHECK_EQ(+2 * kPointerSize, ExitFrameConstants::kCallerSPDisplacement);
   DCHECK_EQ(+1 * kPointerSize, ExitFrameConstants::kCallerPCOffset);
@@ -1088,7 +1090,7 @@ void MacroAssembler::EnterExitFramePrologue() {
   mov(ebp, esp);
 
   // Reserve room for entry stack pointer and push the code object.
-  push(Immediate(Smi::FromInt(StackFrame::EXIT)));
+  push(Immediate(Smi::FromInt(frame_type)));
   DCHECK_EQ(-2 * kPointerSize, ExitFrameConstants::kSPOffset);
   push(Immediate(0));  // Saved entry sp, patched before call.
   DCHECK_EQ(-3 * kPointerSize, ExitFrameConstants::kCodeOffset);
@@ -1127,9 +1129,9 @@ void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) {
   mov(Operand(ebp, ExitFrameConstants::kSPOffset), esp);
 }
 
-
-void MacroAssembler::EnterExitFrame(int argc, bool save_doubles) {
-  EnterExitFramePrologue();
+void MacroAssembler::EnterExitFrame(int argc, bool save_doubles,
+                                    StackFrame::Type frame_type) {
+  EnterExitFramePrologue(frame_type);
 
   // Set up argc and argv in callee-saved registers.
   int offset = StandardFrameConstants::kCallerSPOffset - kPointerSize;
@@ -1142,7 +1144,7 @@ void MacroAssembler::EnterExitFrame(int argc, bool save_doubles) {
 
 
 void MacroAssembler::EnterApiExitFrame(int argc) {
-  EnterExitFramePrologue();
+  EnterExitFramePrologue(StackFrame::EXIT);
   EnterExitFrameEpilogue(argc, false);
 }
 
@@ -2141,11 +2143,12 @@ void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid) {
   JumpToExternalReference(ExternalReference(fid, isolate()));
 }
 
-
-void MacroAssembler::JumpToExternalReference(const ExternalReference& ext) {
+void MacroAssembler::JumpToExternalReference(const ExternalReference& ext,
+                                             bool builtin_exit_frame) {
   // Set the entry point and jump to the C entry runtime stub.
   mov(ebx, Immediate(ext));
-  CEntryStub ces(isolate(), 1);
+  CEntryStub ces(isolate(), 1, kDontSaveFPRegs, kArgvOnStack,
+                 builtin_exit_frame);
   jmp(ces.GetCode(), RelocInfo::CODE_TARGET);
 }