profile_mcount_ppc.s

关于xilinx大学计划培训教程3的实例代码

//
// Copyright (c) 2002 Xilinx, Inc.  All rights reserved. 
// Xilinx, Inc. 
//
// XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A 
// COURTESY TO YOU.  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. 
//
// $Id: profile_mcount_ppc.S,v 1.1.6.6 2005/11/15 23:40:59 salindac Exp $
//
	.globl _mcount
	
	#define _MCOUNT_STACK_FRAME 40			
	.section .text 
	.align 2
	.type _mcount@function


_mcount:
	stwu 1,	-_MCOUNT_STACK_FRAME(1)
	stw 3, 8(1)
	stw 4, 12(1)
	stw 5, 16(1)
	stw 6, 20(1)
	stw 7, 24(1)
	stw 8, 28(1)
	stw 9, 32(1)
	stw 10, 36(1)
	mflr 4
	stw 4, (_MCOUNT_STACK_FRAME+4)(1)
	lwz 3, (_MCOUNT_STACK_FRAME)(1)
	lwz 3, 4(3)	
	bl mcount
	lwz 4, (_MCOUNT_STACK_FRAME+4)(1)
	mtlr 4
	lwz 10, 36(1)
	lwz 9, 32(1)
	lwz 8, 28(1)
	lwz 7, 24(1)
	lwz 6, 20(1)
	lwz 5, 16(1)
	lwz 4, 12(1)
	lwz 3, 8(1)	
	addi 1,1, _MCOUNT_STACK_FRAME
	blr