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-rw-r--r--qemu/roms/SLOF/board-qemu/llfw/board_io.S46
1 files changed, 46 insertions, 0 deletions
diff --git a/qemu/roms/SLOF/board-qemu/llfw/board_io.S b/qemu/roms/SLOF/board-qemu/llfw/board_io.S
new file mode 100644
index 000000000..7d572ab18
--- /dev/null
+++ b/qemu/roms/SLOF/board-qemu/llfw/board_io.S
@@ -0,0 +1,46 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2011 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <macros.h>
+#include <cpu.h>
+
+ .text
+
+/****************************************************************************
+ * prints one character to serial console
+ *
+ * Input:
+ * R3 - character
+ *
+ * Returns: -
+ *
+ * Modifies Registers:
+ * R3, R4, R5, R6, R7
+ ****************************************************************************/
+ENTRY(io_putchar)
+ sldi r6,r3,(24+32)
+ li r3,0x58
+ li r4,0
+ li r5,1
+ .long 0x44000022
+ blr
+
+ENTRY(io_getchar)
+ mr r10,r3
+ li r3,0x54
+ li r4,0
+ .long 0x44000022
+ mr. r3,r4
+ beq 1f
+ srdi r3,r5,(24+32)
+ stb r3,0(r10)
+1: blr