asmcpu.s

这是单板上DPRAM的驱动程序

# @(#) pSOSystem PowerPC/V2.2.2: bsps/fuc8xx/src/asmcpu.s               *
#************************************************************************
#                                                                       *
#   MODULE:  asmcpu.s                                                   *
#   DATE:    98/7/1                                                     *
#   AUTHOR:  Shan Zhengguang                                            *
#   PURPOSE: Assembly-language support code                             *
#                                                                       *
#-----------------------------------------------------------------------*
#                                                                       *
#            COPYRIGHT 1998 - 1999, ZHONGXING TELECOM CO.,LTD.          *
#                       ALL RIGHTS RESERVED                             *
#                                                                       *
#-----------------------------------------------------------------------*
#                                                                       *
#************************************************************************

#************************************************************************
# Initial_Sp: Indicate Stack memory                                     *
#************************************************************************
	.globl	Initial_Sp
        .bss
	.align 4
        .space  4*1024
Initial_Sp:

#************************************************************************
# ULONG GetIMMR(void): Return the Internal Memory Map register contents *
#************************************************************************
	.text
	.align 2
	.globl	GetIMMR
GetIMMR:
	mfspr	r3, 638
	blr
	
	.global getTBL
getTBL:
	mftb r3
	blr

	.global getTBU
getTBU:
	mftbu r3
	blr

        .end