Use EXTERNAL_REFERENCE instead of RUNTIME_ENTRY for Runtime::PerformGC and

CallApiFunctionAndReturn in X64

Review URL: https://codereview.chromium.org/11694008
Patch from Haitao Feng <haitao.feng@intel.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13287 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/x64/code-stubs-x64.cc

@@ -3934,8 +3934,7 @@ void CEntryStub::GenerateCore(MacroAssembler* masm,
     __ movq(rdi, rax);
 #endif
     __ movq(kScratchRegister,
-            FUNCTION_ADDR(Runtime::PerformGC),
-            RelocInfo::RUNTIME_ENTRY);
+            ExternalReference::perform_gc_function(masm->isolate()));
     __ call(kScratchRegister);
   }
 

src/x64/macro-assembler-x64.cc

@@ -731,7 +731,7 @@ void MacroAssembler::CallApiFunctionAndReturn(Address function_address,
 
   // Call the api function!
   movq(rax, reinterpret_cast<int64_t>(function_address),
-       RelocInfo::RUNTIME_ENTRY);
+       RelocInfo::EXTERNAL_REFERENCE);
   call(rax);
 
   if (FLAG_log_timer_events) {

src/x64/macro-assembler-x64.h

@@ -1473,17 +1473,16 @@ extern void LogGeneratedCodeCoverage(const char* file_line);
 #define CODE_COVERAGE_STRINGIFY(x) #x
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
-#define ACCESS_MASM(masm) {                                               \
-    byte* x64_coverage_function =                                         \
-        reinterpret_cast<byte*>(FUNCTION_ADDR(LogGeneratedCodeCoverage)); \
-    masm->pushfd();                                                       \
-    masm->pushad();                                                       \
-    masm->push(Immediate(reinterpret_cast<int>(&__FILE_LINE__)));         \
-    masm->call(x64_coverage_function, RelocInfo::RUNTIME_ENTRY);          \
-    masm->pop(rax);                                                       \
-    masm->popad();                                                        \
-    masm->popfd();                                                        \
-  }                                                                       \
+#define ACCESS_MASM(masm) {                                                  \
+    Address x64_coverage_function = FUNCTION_ADDR(LogGeneratedCodeCoverage); \
+    masm->pushfq();                                                          \
+    masm->Pushad();                                                          \
+    masm->push(Immediate(reinterpret_cast<int>(&__FILE_LINE__)));            \
+    masm->Call(x64_coverage_function, RelocInfo::EXTERNAL_REFERENCE);        \
+    masm->pop(rax);                                                          \
+    masm->Popad();                                                           \
+    masm->popfq();                                                           \
+  }                                                                          \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->