xref: /linux/arch/m68k/fpsp040/sto_res.S (revision e5451c8f8330e03ad3cfa16048b4daf961af434f)
1|
2|	sto_res.sa 3.1 12/10/90
3|
4|	Takes the result and puts it in where the user expects it.
5|	Library functions return result in fp0.	If fp0 is not the
6|	users destination register then fp0 is moved to the
7|	correct floating-point destination register.  fp0 and fp1
8|	are then restored to the original contents.
9|
10|	Input:	result in fp0,fp1
11|
12|		d2 & a0 should be kept unmodified
13|
14|	Output:	moves the result to the true destination reg or mem
15|
16|	Modifies: destination floating point register
17|
18
19|		Copyright (C) Motorola, Inc. 1990
20|			All Rights Reserved
21|
22|       For details on the license for this file, please see the
23|       file, README, in this same directory.
24
25STO_RES:	|idnt	2,1 | Motorola 040 Floating Point Software Package
26
27
28	|section	8
29
30#include "fpsp.h"
31
32	.global	sto_cos
33sto_cos:
34	bfextu		CMDREG1B(%a6){#13:#3},%d0	|extract cos destination
35	cmpib		#3,%d0		|check for fp0/fp1 cases
36	bles		c_fp0123
37	fmovemx	%fp1-%fp1,-(%a7)
38	moveql		#7,%d1
39	subl		%d0,%d1		|d1 = 7- (dest. reg. no.)
40	clrl		%d0
41	bsetl		%d1,%d0		|d0 is dynamic register mask
42	fmovemx	(%a7)+,%d0
43	rts
44c_fp0123:
45	cmpib		#0,%d0
46	beqs		c_is_fp0
47	cmpib		#1,%d0
48	beqs		c_is_fp1
49	cmpib		#2,%d0
50	beqs		c_is_fp2
51c_is_fp3:
52	fmovemx	%fp1-%fp1,USER_FP3(%a6)
53	rts
54c_is_fp2:
55	fmovemx	%fp1-%fp1,USER_FP2(%a6)
56	rts
57c_is_fp1:
58	fmovemx	%fp1-%fp1,USER_FP1(%a6)
59	rts
60c_is_fp0:
61	fmovemx	%fp1-%fp1,USER_FP0(%a6)
62	rts
63
64
65	.global	sto_res
66sto_res:
67	bfextu		CMDREG1B(%a6){#6:#3},%d0	|extract destination register
68	cmpib		#3,%d0		|check for fp0/fp1 cases
69	bles		fp0123
70	fmovemx	%fp0-%fp0,-(%a7)
71	moveql		#7,%d1
72	subl		%d0,%d1		|d1 = 7- (dest. reg. no.)
73	clrl		%d0
74	bsetl		%d1,%d0		|d0 is dynamic register mask
75	fmovemx	(%a7)+,%d0
76	rts
77fp0123:
78	cmpib		#0,%d0
79	beqs		is_fp0
80	cmpib		#1,%d0
81	beqs		is_fp1
82	cmpib		#2,%d0
83	beqs		is_fp2
84is_fp3:
85	fmovemx	%fp0-%fp0,USER_FP3(%a6)
86	rts
87is_fp2:
88	fmovemx	%fp0-%fp0,USER_FP2(%a6)
89	rts
90is_fp1:
91	fmovemx	%fp0-%fp0,USER_FP1(%a6)
92	rts
93is_fp0:
94	fmovemx	%fp0-%fp0,USER_FP0(%a6)
95	rts
96
97	|end
98