/** * @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) 1989-1999. * 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.com/license/LICENSE. * * $Id$ */ #ifndef _RTEMS_ASM_H #define _RTEMS_ASM_H /* * Indicate we are in an assembly file and get the basic CPU definitions. */ #define ASM #include /* * 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 /* 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 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 er0 REG(er0) #define er1 REG(er1) #define er2 REG(er2) #define er3 REG(er3) #define er4 REG(er4) #define er5 REG(er5) #define er6 REG(er6) #define er7 REG(er7) #define sp REG(sp) /* * 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 asm( \".h8300h\" );