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- /*-
- * Copyright (c) 1985 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Computer Consoles Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)Kfrexpd.s 7.1 (Berkeley) 12/6/90
- */
-
- #include "../tahoe/SYS.h"
-
- .text
- ENTRY(Kfrexpd, 0)
- subl3 $60,fp,sp
- clrl -60(fp)
- clrl -56(fp)
- tstl 4(fp)
- jgeq 1f
- lnd 4(fp)
- std 4(fp)
- movl $1,-56(fp)
- 1:
- cmpd2 4(fp),one
- jleq 1f
- 2:
- cmpd2 4(fp),one
- jleq 3f
- addl2 $1,-60(fp)
- pushl 16(fp) # hfs
- pushl two+4 # ldd 2.0
- pushl two
- pushl 8(fp)
- pushl 4(fp) # acc
- callf $24,_Kdivd
- ldd r0
- std 4(fp)
- jbr 2b
- 1: cmpd2 4(fp),half
- jlss 2f
- jbr 3f
- 0:
- subl2 $1,-60(fp)
- pushl 16(fp) # hfs
- ldd two; pushd # 2.0
- ldd 4(fp); pushd # acc
- callf $24,_Kmuld
- ldd r0
- std 4(fp)
- 2:
- cmpd2 4(fp),half
- jlss 0b
- 3: movl -60(fp),*12(fp)
- tstl -56(fp)
- jeql 1f
- lnd 4(fp)
- std 4(fp)
- 1:
- movl 8(fp),r1
- movl 4(fp),r0
- ret
- .data
- .align 2
- one: .long 0x40800000, 0x00000000 # .double 1
- two: .long 0x41000000, 0x00000000 # .double 2
- half: .long 0x40000000, 0x00000000 # .double 0.5
-