Add SDK modifications by BassAceGold as of 2011-04-14, as well as modified DMA functions as of 2013-01-29.

1 files changed, 55 insertions, 0 deletions

diff --git a/sdk-modifications/include/ds2_excpt.h b/sdk-modifications/include/ds2_excpt.h
new file mode 100644
index 0000000..08fe77e
--- /dev/null
+++ b/sdk-modifications/include/ds2_excpt.h
@@ -0,0 +1,55 @@
+#ifndef __DS2_EXCPT_H__
+#define __DS2_EXCPT_H__
+
+#include <mipsregs.h>
+extern unsigned int Process_RA;
+extern unsigned int Process_SP;
+
+#define SAVE_PROCESS_REGISTER()				\
+    do{ unsigned int sr    ;				\
+    	sr = read_c0_status();				\
+    	write_c0_status((sr&(~1)));			\
+			__asm__ __volatile__(			\
+			"sw $31,0x00(%0)\n\t"			\
+			"sw $29,0x00(%1)\n\t"			\
+            :										\
+			: "r" (&Process_RA),"r" (&Process_SP)); \
+       write_c0_status(sr);     \
+    }while(0)
+
+#define RESTORE_PROCESS_REGISTER()			\
+			__asm__ __volatile__(			\
+			"lw $31,0x00(%0)\n\t"			\
+			"lw $29,0x00(%1)\n\t"			\
+            :								\
+			: "r" (&Process_RA),"r" (&Process_SP))
+
+inline static void excpt_exit(x) \
+{
+	unsigned int sr;
+	sr = read_c0_status();
+	write_c0_status(sr & (~1));
+	__asm__ __volatile__("lw $2,0x00(%0)\n\t" :: "r" (&x));
+	RESTORE_PROCESS_REGISTER();		
+    write_c0_status(sr);
+    __asm__ __volatile__(
+		"jr $31\n\t"
+		"nop\n\t"
+		);
+}
+
+typedef void (*PFun_Exception_Handler)(unsigned int);
+
+//Setup handle to process the exception
+//except_index: exception number
+//except_handle: handle to process the exception
+//arg: argument to the handle
+extern int Setup_except_handle(unsigned int except_index, PFun_Exception_Handler except_handle, unsigned int arg);
+
+//Add a write watched exception, if the CPU write the addr, a exception will
+//  generated, the watch exception's number is 23
+//addr: address to be watched
+extern void add_watch_point(unsigned int addr);
+
+#endif //__DS2_EXCPT_H__
+