x_bsun.S
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上传日期:2013-02-24
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- | x_bsun.sa 3.3 7/1/91
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- | fpsp_bsun --- FPSP handler for branch/set on unordered exception
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- | Copy the PC to FPIAR to maintain 881/882 compatibility
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- | 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.
- |
- | Copyright (C) Motorola, Inc. 1990
- | All Rights Reserved
- |
- | THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF MOTOROLA
- | The copyright notice above does not evidence any
- | actual or intended publication of such source code.
- X_BSUN: |idnt 2,1 | Motorola 040 Floating Point Software Package
- |section 8
- .include "fpsp.h"
- |xref real_bsun
- .global fpsp_bsun
- fpsp_bsun:
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- link %a6,#-LOCAL_SIZE
- fsave -(%a7)
- moveml %d0-%d1/%a0-%a1,USER_DA(%a6)
- fmovemx %fp0-%fp3,USER_FP0(%a6)
- fmoveml %fpcr/%fpsr/%fpiar,USER_FPCR(%a6)
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- movel EXC_PC(%a6),USER_FPIAR(%a6)
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- moveml USER_DA(%a6),%d0-%d1/%a0-%a1
- fmovemx USER_FP0(%a6),%fp0-%fp3
- fmoveml USER_FPCR(%a6),%fpcr/%fpsr/%fpiar
- frestore (%a7)+
- unlk %a6
- bral real_bsun
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- |end