# HG changeset patch
# User Michael Pavone <pavone@retrodev.com>
# Date 1492762780 25200
# Node ID 2fc444b69351dc10fe4e7ffa2e6ff147302fc7c7
# Parent  c9dc2603b0876407304f1350da0d935caacb91a2
Minor optimization to avoid invalidating translated code when the bank has not actually changed. Makes a nasty edge case in the 68K debugger slightly less severe when dealing with code that uses banking

diff -r c9dc2603b087 -r 2fc444b69351 romdb.c
--- a/romdb.c	Thu Apr 20 22:28:58 2017 -0700
+++ b/romdb.c	Fri Apr 21 01:19:40 2017 -0700
@@ -296,8 +296,11 @@
 			}
 		}
 	} else {
-		m68k_invalidate_code_range(gen->m68k, address * 0x80000, (address + 1) * 0x80000);
-		context->mem_pointers[gen->mapper_start_index + address] = gen->cart + 0x40000*value;
+		void *new_ptr = gen->cart + 0x40000*value;
+		if (context->mem_pointers[gen->mapper_start_index + address] != new_ptr) {
+			m68k_invalidate_code_range(gen->m68k, address * 0x80000, (address + 1) * 0x80000);
+			context->mem_pointers[gen->mapper_start_index + address] = new_ptr;
+		}
 	}
 	return context;
 }