reland 16744: add context save for GenerateFastApiCall

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 9abd5a0c3da381152c086379481c6e4e179e0610..0a7b53bea321a932b2cb72f84fd334c94e33d525 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -541,7 +541,9 @@ class MacroAssembler: public Assembler {
   // Leave the current exit frame. Expects the return value in r0.
   // Expect the number of values, pushed prior to the exit frame, to
   // remove in a register (or no_reg, if there is nothing to remove).
-  void LeaveExitFrame(bool save_doubles, Register argument_count);
+  void LeaveExitFrame(bool save_doubles,
+                      Register argument_count,
+                      bool restore_context);
 
   // Get the actual activation frame alignment for target environment.
   static int ActivationFrameAlignment();
@@ -1111,7 +1113,8 @@ 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 a runtime routine.
   void JumpToExternalReference(const ExternalReference& builtin);