patch-1.3.94 linux/arch/m68k/fpsp040/sto_res.S

• Lines: 99
• Date: Sat Feb 24 22:58:44 1996
• Orig file: v1.3.93/linux/arch/m68k/fpsp040/sto_res.S
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.93/linux/arch/m68k/fpsp040/sto_res.S linux/arch/m68k/fpsp040/sto_res.S
@@ -0,0 +1,98 @@
+|
+|	sto_res.sa 3.1 12/10/90
+|
+|	Takes the result and puts it in where the user expects it.
+|	Library functions return result in fp0.	If fp0 is not the
+|	users destination register then fp0 is moved to the the
+|	correct floating-point destination register.  fp0 and fp1
+|	are then restored to the original contents. 
+|
+|	Input:	result in fp0,fp1 
+|
+|		d2 & a0 should be kept unmodified
+|
+|	Output:	moves the result to the true destination reg or mem
+|
+|	Modifies: destination floating point register
+|
+
+|		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+|	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF MOTOROLA 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.
+
+STO_RES:	|idnt	2,1 | Motorola 040 Floating Point Software Package
+
+
+	|section	8
+
+	.include "fpsp.h"
+
+	.global	sto_cos
+sto_cos:
+	bfextu		CMDREG1B(%a6){#13:#3},%d0	|extract cos destination
+	cmpib		#3,%d0		|check for fp0/fp1 cases
+	bles		c_fp0123
+	fmovemx	%fp1-%fp1,-(%a7)
+	moveql		#7,%d1
+	subl		%d0,%d1		|d1 = 7- (dest. reg. no.)
+	clrl		%d0
+	bsetl		%d1,%d0		|d0 is dynamic register mask
+	fmovemx	(%a7)+,%d0
+	rts
+c_fp0123:
+	cmpib		#0,%d0
+	beqs		c_is_fp0
+	cmpib		#1,%d0
+	beqs		c_is_fp1
+	cmpib		#2,%d0
+	beqs		c_is_fp2
+c_is_fp3:
+	fmovemx	%fp1-%fp1,USER_FP3(%a6)
+	rts
+c_is_fp2:
+	fmovemx	%fp1-%fp1,USER_FP2(%a6)
+	rts
+c_is_fp1:
+	fmovemx	%fp1-%fp1,USER_FP1(%a6)
+	rts
+c_is_fp0:
+	fmovemx	%fp1-%fp1,USER_FP0(%a6)
+	rts
+
+
+	.global	sto_res
+sto_res:
+	bfextu		CMDREG1B(%a6){#6:#3},%d0	|extract destination register
+	cmpib		#3,%d0		|check for fp0/fp1 cases
+	bles		fp0123
+	fmovemx	%fp0-%fp0,-(%a7)
+	moveql		#7,%d1
+	subl		%d0,%d1		|d1 = 7- (dest. reg. no.)
+	clrl		%d0
+	bsetl		%d1,%d0		|d0 is dynamic register mask
+	fmovemx	(%a7)+,%d0
+	rts
+fp0123:
+	cmpib		#0,%d0
+	beqs		is_fp0
+	cmpib		#1,%d0
+	beqs		is_fp1
+	cmpib		#2,%d0
+	beqs		is_fp2
+is_fp3:
+	fmovemx	%fp0-%fp0,USER_FP3(%a6)
+	rts
+is_fp2:
+	fmovemx	%fp0-%fp0,USER_FP2(%a6)
+	rts
+is_fp1:
+	fmovemx	%fp0-%fp0,USER_FP1(%a6)
+	rts
+is_fp0:
+	fmovemx	%fp0-%fp0,USER_FP0(%a6)
+	rts
+
+	|end