(From Oliver Stoneberg)

This fixes the winwork.c and poly(new).c meory leaks in the viper.c 
driver. I didn't look at the x86drc.c, because Aaron said it will be 
changed soon and there is no need to investigate those leaks at all.

As I wanted to update my own personal TODO about that fix I 
recognised it only happens in viper.c as well, so I took a stab at 
it. It was just anothe rmissing cleanup function and I also cleaned 
up the *_exit() potions/usage of the cores supporting DRC a bit.

src/emu/cpu/mips/mdrc64.c

@@ -482,6 +482,7 @@ static void mips3drc_exit(void)
 		}
 	}
 #endif
+	drc_exit(mips3.drc);
 }
 
 

src/emu/cpu/mips/mdrcold.c

@@ -268,6 +268,7 @@ static void mips3drc_init(void)
 
 static void mips3drc_exit(void)
 {
+	drc_exit(mips3.drc);
 }
 
 

src/emu/cpu/mips/mips3drc.c

@@ -252,9 +252,8 @@ static void mips3_exit(void)
 		x86log_free_context(mips3.log);
 
 	/* clean up the DRC */
-	mips3drc_exit();
 	drcfe_exit(mips3.drcfe);
-	drc_exit(mips3.drc);
+	mips3drc_exit();
 
 	/* free the cache */
 	osd_free_executable(mips3.core, CACHE_SIZE + sizeof(*mips3.core));

src/emu/cpu/powerpc/drc_ops.c

@@ -110,6 +110,11 @@ static void ppcdrc_reset(drc_core *drc)
 	}
 }
 
+static void ppcdrc_exit(void)
+{
+	drc_exit(ppc.drc);
+}
+
 static UINT32 *ppcdrc_getopptr(UINT32 address)
 {
 	UINT32 *result;

src/emu/cpu/powerpc/ppcdrc.c

@@ -1101,7 +1101,7 @@ static void ppcdrc403_exit(void)
 #if LOG_CODE
 	//if (symfile) fclose(symfile);
 #endif
-	drc_exit(ppc.drc);
+	ppcdrc_exit();
 }
 
 static void ppcdrc403_reset(void)
@@ -1343,7 +1343,7 @@ static void ppcdrc603_exit(void)
 #if LOG_CODE
 	//if (symfile) fclose(symfile);
 #endif
-	drc_exit(ppc.drc);
+	ppcdrc_exit();
 }
 #endif
 
@@ -1534,7 +1534,7 @@ static void ppcdrc602_exit(void)
 #if LOG_CODE
 	//if (symfile) fclose(symfile);
 #endif
-	drc_exit(ppc.drc);
+	ppcdrc_exit();
 }
 
 static void ppcdrc602_reset(void)
@@ -1718,7 +1718,7 @@ static void mpc8240drc_init(int index, int clock, const void *_config, int (*irq
 
 static void mpc8240drc_exit(void)
 {
-
+	ppcdrc_exit();
 }
 #endif
 
@@ -1865,7 +1865,7 @@ static void ppc601drc_exit(void)
 #if LOG_CODE
 	//if (symfile) fclose(symfile);
 #endif
-	drc_exit(ppc.drc);
+	ppcdrc_exit();
 }
 #endif
 
@@ -1998,7 +1998,7 @@ static void ppc604drc_exit(void)
 #if LOG_CODE
 	//if (symfile) fclose(symfile);
 #endif
-	drc_exit(ppc.drc);
+	ppcdrc_exit();
 }
 #endif
 

src/mame/drivers/viper.c

@@ -39,9 +39,15 @@
 
 static UINT8 backup_ram[0x2000];
 
+static void viper_exit(running_machine *machine)
+{
+	voodoo_exit(0);
+}
 
 static VIDEO_START(viper)
 {
+	add_exit_callback(machine, viper_exit);	
+	
 	voodoo_start(0, 0, VOODOO_3, 16, 16, 16);
 }