xref: /src/sys/arch/m68k/fpsp/x_bsun.sa

*	MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP
*	M68000 Hi-Performance Microprocessor Division
*	M68040 Software Package 
*
*	M68040 Software Package Copyright (c) 1993, 1994 Motorola Inc.
*	All rights reserved.
*
*	THE SOFTWARE is provided on an "AS IS" basis and without warranty.
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*	MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED,
*	INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
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*	regard to the SOFTWARE (INCLUDING ANY MODIFIED VERSIONS THEREOF)
*	and any accompanying written materials. 
*
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*
*	x_bsun.sa 3.3 7/1/91
*
*	fpsp_bsun --- FPSP handler for branch/set on unordered exception
*
*	Copy the PC to FPIAR to maintain 881/882 compatability
*
*	The real_bsun handler will need to perform further corrective
*	measures as outlined in the 040 User's Manual on pages
*	9-41f, section 9.8.3.
*

X_BSUN	IDNT    2,1 Motorola 040 Floating Point Software Package

	section	8

	include	fpsp.h

	xref	real_bsun

	xdef	fpsp_bsun
fpsp_bsun:
*
	link		a6,#-LOCAL_SIZE
	fsave		-(a7)
	movem.l		d0-d1/a0-a1,USER_DA(a6)
	fmovem.x	fp0-fp3,USER_FP0(a6)
	fmovem.l	fpcr/fpsr/fpiar,USER_FPCR(a6)

*
	move.l		EXC_PC(a6),USER_FPIAR(a6)
*
	movem.l		USER_DA(a6),d0-d1/a0-a1
	fmovem.x	USER_FP0(a6),fp0-fp3
	fmovem.l	USER_FPCR(a6),fpcr/fpsr/fpiar
	frestore	(a7)+
	unlk		a6
	bra.l		real_bsun
*
	end