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/*  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) 1994-1997.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  $Id: asm.h,v 1.2 2001-09-27 11:59:26 chris Exp $

 */

#ifndef __i386_ASM_h

#define __i386_ASM_h

/*

 *  Indicate we are in an assembly file and get the basic CPU definitions.

 */

#ifndef ASM

#define ASM

#endif

#include <rtems/score/targopts.h>

#include <rtems/score/i386.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.

 */

/*

 *  Looks like there is a bug in gcc 2.6.2 where this is not

 *  defined correctly when configured as i386-coff and

 *  i386-aout.

 */

#undef __REGISTER_PREFIX__

#define __REGISTER_PREFIX__ %

/*

#ifndef __REGISTER_PREFIX__

#define __REGISTER_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)

#define eax REG (eax)

#define ebx REG (ebx)

#define ecx REG (ecx)

#define edx REG (edx)

#define esi REG (esi)

#define edi REG (edi)

#define esp REG (esp)

#define ebp REG (ebp)

#define cr0 REG (cr0)

#define ax REG (ax)

#define bx REG (bx)

#define cx REG (cx)

#define dx REG (dx)

#define si REG (si)

#define di REG (di)

#define sp REG (sp)

#define bp REG (bp)

#define ah REG (ah)

#define bh REG (bh)

#define ch REG (ch)

#define dh REG (dh)

#define al REG (al)

#define bl REG (bl)

#define cl REG (cl)

#define dl REG (dl)

#define cs REG (cs)

#define ds REG (ds)

#define es REG (es)

#define fs REG (fs)

#define gs REG (gs)

#define ss REG (ss)

/*

 *  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 .text

#define END_CODE

#define BEGIN_DATA .data

#define END_DATA

#define BEGIN_BSS .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

/* end of include file */