1 files changed, 47 insertions, 0 deletions
diff --git a/libgloss/sparc/erc32-io.c b/libgloss/sparc/erc32-io.c
new file mode 100644
index 000000000..082d9f9c5
--- /dev/null
+++ b/libgloss/sparc/erc32-io.c
@@ -0,0 +1,47 @@
+#define USE_PORT_A
+
+#define RXADATA (int *) 0x01F800E0
+#define RXBDATA (int *) 0x01F800E4
+#define RXSTAT (int *) 0x01F800E8
+
+void
+outbyte (int c)
+{
+  volatile int *rxstat;
+  volatile int *rxadata;
+  int rxmask;
+
+  rxstat = RXSTAT;
+#ifdef USE_PORT_A
+  rxadata = RXADATA;
+  rxmask = 6;
+#else
+  rxadata = RXBDATA;
+  rxmask = 0x60000;
+#endif
+
+  while ((*rxstat & rxmask) == 0);
+
+  *rxadata = c;
+}
+
+int
+inbyte (void)
+{
+  volatile int *rxstat;
+  volatile int *rxadata;
+  int rxmask;
+
+  rxstat = RXSTAT;
+#ifdef USE_PORT_A
+  rxadata = RXADATA;
+  rxmask = 1;
+#else
+  rxadata = RXBDATA;
+  rxmask = 0x10000;
+#endif
+
+  while ((*rxstat & rxmask) == 0);
+
+  return *rxadata;
+}