asm.h

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/*
 *  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) 2011
 *  Anthony Green
 *
 *  COPYRIGHT (c) 1989-1999, 2010.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 *
 *  $Id: asm.h,v 1.9 2010/06/29 00:31:09 joel Exp $
 */
 
#ifndef _RTEMS_ASM_H
#define _RTEMS_ASM_H
 
/*
 *  Indicate we are in an assembly file and get the basic CPU definitions.
 */
 
#include <rtems/score/moxie.h>
 
/*
 *  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.
 */
 
#ifndef __USER_LABEL_PREFIX__
#define __USER_LABEL_PREFIX__
#endif
 
#ifndef __REGISTER_PREFIX__
#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 fp      REG(fp)
#define sp      REG(sp)
#define r0      REG(r0)
#define r1      REG(r1)
#define r2      REG(r2)
#define r3      REG(r3)
#define r4      REG(r4)
#define r5      REG(r5)
#define r6      REG(r6)
#define r7      REG(r7)
#define r8      REG(r8)
#define r9      REG(r9)
#define r10     REG(r10)
#define r11     REG(r11)
#define r12     REG(r12)
#define r13     REG(r13)
 
/*
 *  Define macros to handle section beginning and ends.
 */
 
 
#define BEGIN_CODE_DCL .text
#define END_CODE_DCL
#define BEGIN_DATA_DCL .data
#define END_DATA_DCL
#define BEGIN_CODE asm ( ".text
#define END_CODE ");
#define BEGIN_DATA
#define END_DATA
#define BEGIN_BSS
#define END_BSS
#define END
 
/*
 *  Following must be tailor 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)
#define EXTERN(sym) .globl SYM (sym)
 
#endif