[regexp] Remove remainder of native RegExpExecStub

src/mips64/simulator-mips64.h

Index: src/mips64/simulator-mips64.h
diff --git a/src/mips64/simulator-mips64.h b/src/mips64/simulator-mips64.h
index 6c41ae111a3ede3659d6f362a280df1a3c3a5a44..8cc5ac18deb5189556f455802c42967ec73738a9 100644
--- a/src/mips64/simulator-mips64.h
+++ b/src/mips64/simulator-mips64.h
@@ -29,8 +29,6 @@ namespace internal {
 
 // Call the generated regexp code directly. The code at the entry address
 // should act as a function matching the type arm_regexp_matcher.
-// The fifth (or ninth) argument is a dummy that reserves the space used for
-// the return address added by the ExitFrame in native calls.
 typedef int (*mips_regexp_matcher)(String* input,
                                    int64_t start_offset,
                                    const byte* input_start,
@@ -39,14 +37,12 @@ typedef int (*mips_regexp_matcher)(String* input,
                                    int64_t output_size,
                                    Address stack_base,
                                    int64_t direct_call,
-                                   void* return_address,
                                    Isolate* isolate);
 
 #define CALL_GENERATED_REGEXP_CODE(isolate, entry, p0, p1, p2, p3, p4, p5, p6, \
                                    p7, p8)                                     \
   (FUNCTION_CAST<mips_regexp_matcher>(entry)(p0, p1, p2, p3, p4, p5, p6, p7,   \
-                                             NULL, p8))
-
+                                             p8))
 
 // The stack limit beyond which we will throw stack overflow errors in
 // generated code. Because generated code on mips uses the C stack, we
@@ -560,13 +556,11 @@ class Simulator {
       reinterpret_cast<int64_t*>(p1), reinterpret_cast<int64_t*>(p2), \
       reinterpret_cast<int64_t*>(p3), reinterpret_cast<int64_t*>(p4)))
 
-
 #define CALL_GENERATED_REGEXP_CODE(isolate, entry, p0, p1, p2, p3, p4, p5, p6, \
                                    p7, p8)                                     \
   static_cast<int>(Simulator::current(isolate)->Call(                          \
-      entry, 10, p0, p1, p2, p3, p4, reinterpret_cast<int64_t*>(p5), p6, p7,   \
-      NULL, p8))
-
+      entry, 9, p0, p1, p2, p3, p4, reinterpret_cast<int64_t*>(p5), p6, p7,    \
+      p8))
 
 // The simulator has its own stack. Thus it has a different stack limit from
 // the C-based native code.  The JS-based limit normally points near the end of