mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2025-12-09 09:03:33 +00:00
124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
/* 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.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#ifndef __SPARC_ASM_h
|
|
#define __SPARC_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/cpu.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.
|
|
*/
|
|
|
|
/* XXX __USER_LABEL_PREFIX__ and __REGISTER_PREFIX__ do not work on gcc 2.7.0 */
|
|
/* 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__ _
|
|
#endif
|
|
|
|
#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 macros for all of the registers on this CPU
|
|
*
|
|
* EXAMPLE: #define d0 REG (d0)
|
|
*/
|
|
|
|
/*
|
|
* 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
|
|
#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)
|
|
|
|
/*
|
|
* Entry for traps which jump to a programmer-specified trap handler.
|
|
*/
|
|
|
|
#define TRAP(_vector, _handler) \
|
|
mov %psr, %l0 ; \
|
|
sethi %hi(_handler), %l4 ; \
|
|
jmp %l4+%lo(_handler); \
|
|
mov _vector, %l3
|
|
|
|
/*
|
|
* Used for the reset trap to avoid a supervisor instruction
|
|
*/
|
|
|
|
#define RTRAP(_vector, _handler) \
|
|
mov %g0, %l0 ; \
|
|
sethi %hi(_handler), %l4 ; \
|
|
jmp %l4+%lo(_handler); \
|
|
mov _vector, %l3
|
|
|
|
#endif
|
|
/* end of include file */
|
|
|
|
|