From: Toni Wilen <twilen@winuae.net>
Date: Sun, 4 Dec 2022 19:19:13 +0000 (+0200)
Subject: Store highest RAM address
X-Git-Tag: 41000~24
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=3d2891e9b65f59a578968b24396b7e61d2d0abf5;p=francis%2Fwinuae.git

Store highest RAM address
---

diff --git a/include/memory.h b/include/memory.h
index 71e1ae63..601b696b 100644
--- a/include/memory.h
+++ b/include/memory.h
@@ -28,6 +28,7 @@ void free_shm (void);
 bool preinit_shm (void);
 extern bool canbang;
 extern bool jit_direct_compatible_memory;
+extern uaecptr highest_ram;
 
 #define Z3BASE_UAE 0x10000000
 #define Z3BASE_REAL 0x40000000
diff --git a/memory.cpp b/memory.cpp
index 3b4cf78a..916782da 100644
--- a/memory.cpp
+++ b/memory.cpp
@@ -44,6 +44,7 @@
 #include "casablanca.h"
 
 bool canbang;
+uaecptr highest_ram;
 static bool rom_write_enabled;
 #ifdef JIT
 /* Set by each memory handler that does not simply access real memory. */
@@ -2789,6 +2790,7 @@ void memory_reset (void)
 	int bnk, bnk_end;
 	bool gayleorfatgary;
 
+	highest_ram = 0;
 	alg_flag = 0;
 	need_hardreset = false;
 	rom_write_enabled = true;
@@ -3401,6 +3403,9 @@ void map_banks (addrbank *bank, int start, int size, int realsize)
 #ifdef WITH_PPC
 	ppc_generate_map_banks(bank, start, size);
 #endif
+	if ((bank->flags & ABFLAG_RAM) && !(bank->flags & ABFLAG_RTG) && ((start + size) << 16) > highest_ram) {
+		highest_ram = (start + size) << 16;
+	}
 }
 
 bool validate_banks_z3(addrbank *bank, int start, int size)