Adding lm32 demo to SAKC project

lm32/logic/sakc/firmware/gdb-test/gdb_uart.c

@@ -0,0 +1,23 @@
+#include "soc-hw.h"
+
+/* Write a single character to debug host */
+void 
+_gdb_write_char (char c)
+{
+	uart_putchar(c);
+}
+
+/* Read and return a single character from debug host */
+char 
+_gdb_read_char (void)
+{    
+	return uart_getchar();
+}
+
+/* Acknowledge specified interrupt that caused CPU to enter debug mode */
+void 
+_gdb_ack_interrupt (void) 
+{
+  /* ACK interrupt */
+  /*__asm__ ("wcsr\tIA, %0" : : "d" (1 << interrupt));*/
+}