Refactor ARMHelperCallSnippet emitSnippetBody

A simple refactor of ARMHelperCallSnippet::emitSnippetBody to allow for
the use of it in downstream project OpenJ9

Signed-off-by: Matthew Hall <[email protected]>

Author: matthewhall2

compiler/aarch64/codegen/ARM64HelperCallSnippet.cpp

@@ -27,14 +27,11 @@
 #include "ras/Logger.hpp"
 #include "runtime/CodeCacheManager.hpp"
 
-uint8_t *TR::ARM64HelperCallSnippet::emitSnippetBody()
-{
-    uint8_t *cursor = cg()->getBinaryBufferCursor();
+uint8_t *TR::ARM64HelperCallSnippet::emitSnippetBodyHelper(uint8_t *cursor)
+    {
     intptr_t distance
         = (intptr_t)(getDestination()->getSymbol()->castToMethodSymbol()->getMethodAddress()) - (intptr_t)cursor;
 
-    getSnippetLabel()->setCodeLocation(cursor);
-
     if (!constantIsSignedImm28(distance)) {
         distance = TR::CodeCacheManager::instance()->findHelperTrampoline(getDestination()->getReferenceNumber(),
                        (void *)cursor)
@@ -65,6 +62,13 @@ uint8_t *TR::ARM64HelperCallSnippet::emitSnippetBody()
     }
 
     return cursor;
+    }
+
+uint8_t *TR::ARM64HelperCallSnippet::emitSnippetBody()
+{
+    uint8_t *cursor = cg()->getBinaryBufferCursor();
+    getSnippetLabel()->setCodeLocation(cursor);
+    return emitSnippetBodyHelper(cursor);
 }
 
 void TR_Debug::print(OMR::Logger *log, TR::ARM64HelperCallSnippet *snippet)

compiler/aarch64/codegen/ARM64HelperCallSnippet.hpp

@@ -91,6 +91,10 @@ class ARM64HelperCallSnippet : public TR::Snippet {
      * @return Snippet length
      */
     virtual uint32_t getLength(int32_t estimatedSnippetStart);
+
+protected:
+    uint8_t *emitSnippetBodyHelper(uint8_t *cursor);
+
 };
 
 } // namespace TR