eabi.s

ULTRACTR的源码

/*-----------------------------------------------------------------------------
//     $Date: 2003/12/05 19:45:25 $
//     $RCSfile: eabi.S,v $
//-----------------------------------------------------------------------------
//
//     XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
//     SOLELY FOR USE IN DEVELOPING PROGRAMS AND SOLUTIONS FOR
//     XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE, OR INFORMATION
//     AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION
//     OR STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS
//     IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
//     AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
//     FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY
//     WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
//     IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
//     REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
//     INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
//     FOR A PARTICULAR PURPOSE.
//     
//     (c) Copyright 2002 Xilinx, Inc.
//     All rights reserved.
//
//---------------------------------------------------------------------------*/

	.file	"eabi.S"
	.section ".text"

	 .section ".got2","aw"
	.align	2
.LCTOC1 = .

/* Table of addresses */
.Lsda = .-.LCTOC1
	.long _SDA_BASE_	/* read/write small data area */

.Lsda2 = .-.LCTOC1
	.long _SDA2_BASE_	/* read-only small data area */

	.text

	.global __eabi
__eabi:	
	lis	11,.LCTOC1@h		/* load address of .LCTOC1 */
	ori	11,11,.LCTOC1@l
	lwz	13,.Lsda(11)		/* load r13 with _SDA_BASE_ address */
	lwz	2,.Lsda2(11)		/* load r2 with _SDA2_BASE_ address */

#ifndef __cplusplus			/* initialization for C++ ? */
	blr				/* no -> return to main */
#else
	.extern atexit
	.extern __atexit
	
	lis	0,atexit@h		/* set up __atexit in eabi-ctors.c */
	ori	0,0,atexit@l
	lis	11,__atexit@h
	ori	11,11,__atexit@l
	stw	0,0(11)
	
	b __do_global_ctors		/* yes -> global constructors */
	trap				/* should never get here */


	.global __init
__init:	blr
	
	.global __fini
__fini:	blr

#endif