MIPS: reland 16744: add context save for GenerateFastApiCall.

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 75ded8849092dbde52ba9c9983cd653d2ee9d49a..2d9c95081b5227af5cad5f0e6925c74e7d87b51e 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -51,6 +51,12 @@ class JumpTarget;
 // MIPS generated code calls C code, it must be via t9 register.
 
 
+// Flags used for LeaveExitFrame function.
+enum LeaveExitFrameMode {
+  EMIT_RETURN = true,
+  NO_EMIT_RETURN = false
+};
+
 // Flags used for AllocateHeapNumber
 enum TaggingMode {
   // Tag the result.
@@ -848,7 +854,8 @@ class MacroAssembler: public Assembler {
   // Leave the current exit frame.
   void LeaveExitFrame(bool save_doubles,
                       Register arg_count,
-                      bool do_return = false);
+                      bool restore_context,
+                      bool do_return = NO_EMIT_RETURN);
 
   // Get the actual activation frame alignment for target environment.
   static int ActivationFrameAlignment();
@@ -1271,7 +1278,8 @@ class MacroAssembler: public Assembler {
                                 ExternalReference thunk_ref,
                                 Register thunk_last_arg,
                                 int stack_space,
-                                int return_value_offset_from_fp);
+                                MemOperand return_value_operand,
+                                MemOperand* context_restore_operand);
 
   // Jump to the builtin routine.
   void JumpToExternalReference(const ExternalReference& builtin,