Annotation of sys/arch/m68k/fpsp/DYADIC.R3V6, Revision 1.1.1.1
1.1 nbrk 1: * $OpenBSD: DYADIC.R3V6,v 1.2 1996/05/29 21:05:20 niklas Exp $
2: * $NetBSD: DYADIC.R3V6,v 1.2 1994/10/26 07:48:31 cgd Exp $
3:
4: * MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP
5: * M68000 Hi-Performance Microprocessor Division
6: * M68040 Software Package
7: *
8: * M68040 Software Package Copyright (c) 1993, 1994 Motorola Inc.
9: * All rights reserved.
10: *
11: * THE SOFTWARE is provided on an "AS IS" basis and without warranty.
12: * To the maximum extent permitted by applicable law,
13: * MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED,
14: * INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
15: * PARTICULAR PURPOSE and any warranty against infringement with
16: * regard to the SOFTWARE (INCLUDING ANY MODIFIED VERSIONS THEREOF)
17: * and any accompanying written materials.
18: *
19: * To the maximum extent permitted by applicable law,
20: * IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER
21: * (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS
22: * PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR
23: * OTHER PECUNIARY LOSS) ARISING OF THE USE OR INABILITY TO USE THE
24: * SOFTWARE. Motorola assumes no responsibility for the maintenance
25: * and support of the SOFTWARE.
26: *
27: * You are hereby granted a copyright license to use, modify, and
28: * distribute the SOFTWARE so long as this entire notice is retained
29: * without alteration in any modified and/or redistributed versions,
30: * and that such modified versions are clearly identified as such.
31: * No licenses are granted by implication, estoppel or otherwise
32: * under any patents or trademarks of Motorola, Inc.
33:
34: *
35: * DYADIC.R3V6 1.2 4/30/91
36: *
37: * DYADIC.R3V6 --- DYADIC template for MCD R3V6 native C compiler
38: *
39: * The MCD compiler is old. It returns float and double values
40: * as a double stored in d0/d1. There is no support for single or extended
41: * precision operations. It's not clear whether the float registers
42: * should be preserved, so for speed they're not.
43: *
44:
45: xref _OPa_
46: xref tag
47:
48: xdef _OPd_
49: _OPd_:
50: link a6,#-LOCAL_SIZE
51: fmovem.l fpsr/fpcr,USER_FPSR(a6) ; user's rounding mode/precision
52: fmove.l #0,fpcr ; force rounding mode/prec to extended,rn
53: *
54: * copy and convert arguments to ETEMP, FPTEMP.
55: *
56: fmove.d 8(a6),fp0
57: fmove.x fp0,FPTEMP(a6)
58: lea FPTEMP(a6),a0
59: bsr tag
60: move.b d0,DTAG(a6)
61:
62: fmove.d 16(a6),fp0
63: fmove.x fp0,ETEMP(a6)
64: lea ETEMP(a6),a0
65: bsr tag
66: move.b d0,STAG(a6)
67:
68: bsr _OPa_
69:
70: fmove.d fp0,USER_D0(a6) ; result goes into d0/d1 pair
71: movem.l USER_D0(a6),d0-d1
72: unlk a6
73: rts
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