initial pocketsnes commit

1 files changed, 45 insertions, 0 deletions

diff --git a/src/squidgehack.c b/src/squidgehack.c
new file mode 100644
index 0000000..f831bd4
--- /dev/null
+++ b/src/squidgehack.c
@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+extern char **g_argv;
+
+/* Call this MMU Hack kernel module after doing mmap, and before doing memset*/
+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);
+	}
+	if(mmufd < 0) return 0;
+	 
+	close(mmufd);
+	return 1;
+}       
+
+
+/* Unload MMU Hack kernel module after closing all memory devices*/
+int mmuunhack(void)
+{
+	int ret;
+	printf("Removing NK's kernel module for Squidge MMU Hack... "); fflush(stdout);
+	ret = system("/sbin/rmmod mmuhack");
+	printf("done (%i)\n", ret);
+
+	return ret;
+}