Making some MSL_C progress (#549)

src/MSL_C.PPCEABI.bare.H/uart_console_io.c

@@ -0,0 +1,32 @@
+#include "PowerPC_EABI_Support/Msl/MSL_C/MSL_Common/ansi_files.h"
+
+static inline int __init_uart_console(void) {
+    int err = 0;
+    static int initialized = 0;
+
+    if (initialized == 0) {
+        err = InitializeUART(57600);
+        if (err == 0)
+            initialized = 1;
+    }
+
+    return (err);
+}
+
+int __write_console(__file_handle handle, unsigned char* buffer, size_t* count, __idle_proc idle_proc) {
+    if (__init_uart_console() != 0) {
+        return 1;
+    }
+
+    if (WriteUARTN(buffer, *count) != 0) {
+        *count = 0;
+        return 1;
+    }
+
+    __TRK_write_console(handle, buffer, count, idle_proc);
+    return 0;
+}
+
+int __close_console() {
+    return 0;
+}