20000317 sourceware import

libgloss/mips/idtmon.S

@@ -0,0 +1,46 @@
+/*
+ * idtmon.S -- lo-level entry points into IDT monitor.
+ *
+ * Copyright (c) 1996 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#ifdef __mips16
+/* This file contains 32 bit assembly code.  */
+	.set nomips16
+#endif
+
+#include "regs.S"
+
+	.text
+	.align	2
+
+/* Provide named functions for entry into the IDT monitor: */
+#define INDIRECT(name,index)			\
+	.globl	name;				\
+	.ent	name;				\
+name:	la	$2,+(0xbfc00000+((index)*8));	\
+	j	$2;				\
+	.end name
+
+/* The following magic numbers are for the slots into the IDT monitor: */
+INDIRECT(open,6)
+INDIRECT(read,7)
+INDIRECT(write,8)
+INDIRECT(close,10)
+INDIRECT(inbyte,11)
+INDIRECT(outbyte,12)
+INDIRECT(mon_printf,16)
+INDIRECT(_flush_cache,28)
+INDIRECT(get_mem_info,55)	/* expects pointer to three word vector */
+
+/* EOF idtmon.S */