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+/**
+ * @file rtems/asm.h
+ *
+ * This include file attempts to address the problems
+ * caused by incompatible flavors of assemblers and
+ * toolsets. It primarily addresses variations in the
+ * use of leading underscores on symbols and the requirement
+ * that register names be preceded by a %.
+ */
+
+/*
+ * NOTE: The spacing in the use of these macros
+ * is critical to them working as advertised.
+ *
+ * COPYRIGHT:
+ *
+ * This file is based on similar code found in newlib available
+ * from ftp.cygnus.com. The file which was used had no copyright
+ * notice. This file is freely distributable as long as the source
+ * of the file is noted. This file is:
+ *
+ * COPYRIGHT (c) 1994-2006.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * $Id: asm.h,v 1.16 2006/01/16 15:12:12 joel Exp $
+ */
+
+#ifndef _RTEMS_ASM_H
+#define _RTEMS_ASM_H
+
+/*
+ * Indicate we are in an assembly file and get the basic CPU definitions.
+ */
+
+#ifndef ASM
+#define ASM
+#endif
+#include <rtems/score/cpuopts.h>
+#include <rtems/score/no_cpu.h>
+
+#ifndef __USER_LABEL_PREFIX__
+/**
+ * Recent versions of GNU cpp define variables which indicate the
+ * need for underscores and percents. If not using GNU cpp or
+ * the version does not support this, then you will obviously
+ * have to define these as appropriate.
+ *
+ * This symbol is prefixed to all C program symbols.
+ */
+#define __USER_LABEL_PREFIX__ _
+#endif
+
+#ifndef __REGISTER_PREFIX__
+/**
+ * Recent versions of GNU cpp define variables which indicate the
+ * need for underscores and percents. If not using GNU cpp or
+ * the version does not support this, then you will obviously
+ * have to define these as appropriate.
+ *
+ * This symbol is prefixed to all register names.
+ */
+#define __REGISTER_PREFIX__
+#endif
+
+#include <rtems/concat.h>
+
+/** 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)
+
+/*
+ * define macros for all of the registers on this CPU
+ *
+ * EXAMPLE: #define d0 REG (d0)
+ */
+
+/*
+ * Define macros to handle section beginning and ends.
+ */
+
+
+/** This macro is used to denote the beginning of a code declaration. */
+#define BEGIN_CODE_DCL .text
+/** This macro is used to denote the end of a code declaration. */
+#define END_CODE_DCL
+/** This macro is used to denote the beginning of a data declaration section. */
+#define BEGIN_DATA_DCL .data
+/** This macro is used to denote the end of a data declaration section. */
+#define END_DATA_DCL
+/** This macro is used to denote the beginning of a code section. */
+#define BEGIN_CODE .text
+/** This macro is used to denote the end of a code section. */
+#define END_CODE
+/** This macro is used to denote the beginning of a data section. */
+#define BEGIN_DATA
+/** This macro is used to denote the end of a data section. */
+#define END_DATA
+/** This macro is used to denote the beginning of the
+ * unitialized data section.
+ */
+#define BEGIN_BSS
+/** This macro is used to denote the end of the unitialized data section. */
+#define END_BSS
+/** This macro is used to denote the end of the assembly file. */
+#define END
+
+/**
+ * This macro is used to declare a public global symbol.
+ *
+ * @note This must be tailored for a particular flavor of the C compiler.
+ * They may need to put underscores in front of the symbols.
+ */
+#define PUBLIC(sym) .globl SYM (sym)
+
+/**
+ * This macro is used to prototype a public global symbol.
+ *
+ * @note This must be tailored for a particular flavor of the C compiler.
+ * They may need to put underscores in front of the symbols.
+ */
+#define EXTERN(sym) .globl SYM (sym)
+
+#endif