From fdb52bcdc698ed0f03e04f34658ea2a3b9c6f9b5 Mon Sep 17 00:00:00 2001
From: drmortalwombat <90205530+drmortalwombat@users.noreply.github.com>
Date: Sat, 27 Jan 2024 17:43:08 +0100
Subject: [PATCH] Limit JSR->JMP forwarding

---
 oscar64/Linker.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/oscar64/Linker.cpp b/oscar64/Linker.cpp
index 3163bc7..a5fb477 100644
--- a/oscar64/Linker.cpp
+++ b/oscar64/Linker.cpp
@@ -400,7 +400,9 @@ void Linker::InlineSimpleJumps(void)
 			for (int j = 0; j < cobj->mReferences.Size(); j++)
 			{
 				LinkerReference* cref = cobj->mReferences[j];
-				if (cref->mOffset > 0 && cref->mOffset < cobj->mSize + 2 && (cref->mFlags & (LREF_HIGHBYTE | LREF_LOWBYTE)) == (LREF_HIGHBYTE | LREF_LOWBYTE))
+				if (cref->mOffset > 0 && cref->mOffset < cobj->mSize + 2 && 
+					cobj->mData[cref->mOffset - 1] == 0x20 &&
+					(cref->mFlags & (LREF_HIGHBYTE | LREF_LOWBYTE)) == (LREF_HIGHBYTE | LREF_LOWBYTE))
 				{
 					if (cref->mRefObject->mType == LOT_NATIVE_CODE && cref->mRefObject->mSize == 3 && 
 						cobj->mSection == cref->mRefObject->mSection && cref->mRefOffset == 0 &&