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

1 files changed, 5 insertions, 2 deletions

diff --git a/romdb.c b/romdb.c
index 48a76a7..c603521 100644
--- a/romdb.c
+++ b/romdb.c
@@ -296,8 +296,11 @@ m68k_context * write_bank_reg_w(uint32_t address, m68k_context * context, uint16
 			}
 		}
 	} 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;
 }