int mmuhack(void)
{
char kocmd[1024];
- int i, mmufd = open("/dev/mmuhack", O_RDWR);
-
- if(mmufd < 0) {
- strcpy(kocmd, "/sbin/insmod ");
- strncpy(kocmd+13, g_argv[0], 1023-13);
- kocmd[1023] = 0;
- for (i = strlen(kocmd); i > 0; i--)
- if (kocmd[i] == '/') { kocmd[i] = 0; break; }
- strcat(kocmd, "/mmuhack.o");
-
- printf("Installing NK's kernel module for Squidge MMU Hack (%s)...\n", kocmd);
- system(kocmd);
- mmufd = open("/dev/mmuhack", O_RDWR);
- }
+ int i, mmufd;
+
+ /* some programs like some versions of gpSP use some weird version of mmuhack.o
+ * which doesn't seem to work. What's even worse they leave their mmuhack loaded on exit.
+ * So we must remove whatever may be left and always reload _our_ mmuhack.o */
+ system("/sbin/rmmod mmuhack");
+
+ strcpy(kocmd, "/sbin/insmod ");
+ strncpy(kocmd+13, g_argv[0], 1023-13);
+ kocmd[1023] = 0;
+ for (i = strlen(kocmd); i > 0; i--)
+ if (kocmd[i] == '/') { kocmd[i] = 0; break; }
+ strcat(kocmd, "/mmuhack.o");
+
+ printf("Installing NK's kernel module for Squidge MMU Hack (%s)...\n", kocmd);
+ system(kocmd);
+ mmufd = open("/dev/mmuhack", O_RDWR);
+
if(mmufd < 0) return 0;
-
+
close(mmufd);
return 1;
-}
+}
/* Unload MMU Hack kernel module after closing all memory devices*/