20000317 sourceware import

libgloss/m68k/asm.h

@@ -0,0 +1,85 @@
+/* asm.h -- macros for m68k asm
+ *
+ * Copyright (c) 1995, 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.
+ */
+
+#if 0
+/*
+ * XXX __USER_LABEL_PREFIX__ and __REGISTER_PREFIX__ do not work on gcc 2.7.0-3
+ * XXX The following ifdef magic fixes the problem but results in a warning
+ * XXX when compiling assembly code.
+ */
+#ifndef __USER_LABEL_PREFIX__
+/* #define __USER_LABEL_PREFIX__ ""	/* no underscore for coff */
+#define __USER_LABEL_PREFIX__ _		/* leading underscore for aout */
+#endif
+
+#ifndef __REGISTER_PREFIX__
+#define __REGISTER_PREFIX__ 		/* never has anything prefixed */
+#endif
+#endif
+
+/*
+ * some assemblers choke on '#' as an immediate value. As gcc can also
+ * use '&', use that in those cases. 
+ */
+#ifndef __IMMEDIATE_PREFIX__
+#define __IMMEDIATE_PREFIX__ #
+#endif
+
+/* ANSI concatenation macros.  */
+#define CONCAT1(a, b) CONCAT2(a, b)
+#define CONCAT2(a, b) a ## b
+
+/* use the right prefix for global labels.  */
+#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__,x)
+
+/* use the right prefix for registers.  */
+#define REG(x) CONCAT1 (__REGISTER_PREFIX__,x)
+
+/* use the right prefix for immediate values.  */
+#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__,x)
+
+/* use the right prefix for register names */
+#define d0 REG (d0)
+#define d1 REG (d1)
+#define d2 REG (d2)
+#define d3 REG (d3)
+#define d4 REG (d4)
+#define d5 REG (d5)
+#define d6 REG (d6)
+#define d7 REG (d7)
+#define a0 REG (a0)
+#define a1 REG (a1)
+#define a2 REG (a2)
+#define a3 REG (a3)
+#define a4 REG (a4)
+#define a5 REG (a5)
+#define a6 REG (a6)
+#define a7 REG (a7)
+#define fp REG (fp)
+#define fp0 REG (fp0)
+#define fp1 REG (fp1)
+#define fp2 REG (fp2)
+#define fp3 REG (fp3)
+#define fp4 REG (fp4)
+#define fp5 REG (fp5)
+#define fp6 REG (fp6)
+#define fp7 REG (fp7)
+#define sp REG (sp)
+#define usp REG (usp)
+#define vbr REG (vbr)
+#define sr REG (sr)
+#define fpcr REG (fpcr)
+#define fpsr REG (fpsr)
+#define fpi REG (fpi)