retire sparc

1 files changed, 0 insertions, 434 deletions

diff --git a/sys/lib/libkern/arch/sparc/rem.S b/sys/lib/libkern/arch/sparc/rem.S
deleted file mode 100644
index 7b56d2bf90d..00000000000
--- a/sys/lib/libkern/arch/sparc/rem.S
+++ /dev/null
@@ -1,434 +0,0 @@
-
-/*	$OpenBSD: rem.S,v 1.2 2011/03/12 18:51:31 deraadt Exp $	*/
-/*	$NetBSD: divrem.m4,v 1.3 1995/04/22 09:37:39 pk Exp $	*/
-
-/*
- * Copyright (c) 1992, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This software was developed by the Computer Systems Engineering group
- * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
- * contributed to Berkeley.
- *
- * 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. 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.
- *
- * Header: divrem.m4,v 1.4 92/06/25 13:23:57 torek Exp
- */
-
-/*
- * Division and remainder, from Appendix E of the Sparc Version 8
- * Architecture Manual, with fixes from Gordon Irlam.
- */
-
-/*
- * Input: dividend and divisor in %o0 and %o1 respectively.
- *
- * m4 parameters:
- *  .rem	name of function to generate
- *  _C_LABEL(_rem)	secondary name of function to generate
- *  rem		rem=div => %o0 / %o1; rem=rem => %o0 % %o1
- *  true		true=true => signed; true=false => unsigned
- *
- * Algorithm parameters:
- *  N		how many bits per iteration we try to get (4)
- *  WORDSIZE	total number of bits (32)
- *
- * Derived constants:
- *  TWOSUPN	2^N, for label generation (m4 exponentiation currently broken)
- *  TOPBITS	number of bits in the top decade of a number
- *
- * Important variables:
- *  Q		the partial quotient under development (initially 0)
- *  R		the remainder so far, initially the dividend
- *  ITER	number of main division loop iterations required;
- *		equal to ceil(log2(quotient) / N).  Note that this
- *		is the log base (2^N) of the quotient.
- *  V		the current comparand, initially divisor*2^(ITER*N-1)
- *
- * Cost:
- *  Current estimate for non-large dividend is
- *	ceil(log2(quotient) / N) * (10 + 7N/2) + C
- *  A large dividend is one greater than 2^(31-TOPBITS) and takes a
- *  different path, as the upper bits of the quotient must be developed
- *  one bit at a time.
- */
-
-
-
-
-
-
-
-
-
-
-
-
-
-/* m4 reminder: d => if a is b, then c, else d */
-
-
-
-
-/*
- * This is the recursive definition for developing quotient digits.
- *
- * Parameters:
- *  $1	the current depth, 1 <= $1 <= 4
- *  $2	the current accumulation of quotient bits
- *  4	max depth
- *
- * We add a new bit to $2 and either recurse or insert the bits in
- * the quotient.  %o3, %o2, and %o5 are inputs and outputs as defined above;
- * the condition codes are expected to reflect the input %o3, and are
- * modified to reflect the output %o3.
- */
-
-
-#include "DEFS.h"
-#include <machine/trap.h>
-#include <machine/asm.h>
-
-	.globl _C_LABEL(_rem)
-_C_LABEL(_rem):
-FUNC(.rem)
-	! compute sign of result; if neither is negative, no problem
-	orcc	%o1, %o0, %g0	! either negative?
-	bge	2f			! no, go do the divide
-	mov	%o0, %g6	! compute sign in any case
-	tst	%o1
-	bge	1f
-	tst	%o0
-	! %o1 is definitely negative; %o0 might also be negative
-	bge	2f			! if %o0 not negative...
-	neg	%o1			! in any case, make %o1 nonneg
-1:	! %o0 is negative, %o1 is nonnegative
-	neg	%o0		! make %o0 nonnegative
-2:
-
-	! Ready to divide.  Compute size of quotient; scale comparand.
-	orcc	%o1, %g0, %o5
-	bnz	1f
-	mov	%o0, %o3
-
-		! Divide by zero trap.  If it returns, return 0 (about as
-		! wrong as possible, but that is what SunOS does...).
-		t	ST_DIV0
-		retl
-		clr	%o0
-
-1:
-	cmp	%o3, %o5			! if %o1 exceeds %o0, done
-	blu	Lgot_result		! (and algorithm fails otherwise)
-	clr	%o2
-	sethi	%hi(1 << (32 - 4 - 1)), %g1
-	cmp	%o3, %g1
-	blu	Lnot_really_big
-	clr	%o4
-
-	! Here the dividend is >= 2^(31-N) or so.  We must be careful here,
-	! as our usual N-at-a-shot divide step will cause overflow and havoc.
-	! The number of bits in the result here is N*ITER+SC, where SC <= N.
-	! Compute ITER in an unorthodox manner: know we need to shift V into
-	! the top decade: so do not even bother to compare to R.
-	1:
-		cmp	%o5, %g1
-		bgeu	3f
-		mov	1, %g5
-		sll	%o5, 4, %o5
-		b	1b
-		inc	%o4
-
-	! Now compute %g5.
-	2:	addcc	%o5, %o5, %o5
-		bcc	Lnot_too_big
-		inc	%g5
-
-		! We get here if the %o1 overflowed while shifting.
-		! This means that %o3 has the high-order bit set.
-		! Restore %o5 and subtract from %o3.
-		sll	%g1, 4, %g1	! high order bit
-		srl	%o5, 1, %o5		! rest of %o5
-		add	%o5, %g1, %o5
-		b	Ldo_single_div
-		dec	%g5
-
-	Lnot_too_big:
-	3:	cmp	%o5, %o3
-		blu	2b
-		nop
-		be	Ldo_single_div
-		nop
-	/* NB: these are commented out in the V8-Sparc manual as well */
-	/* (I do not understand this) */
-	! %o5 > %o3: went too far: back up 1 step
-	!	srl	%o5, 1, %o5
-	!	dec	%g5
-	! do single-bit divide steps
-	!
-	! We have to be careful here.  We know that %o3 >= %o5, so we can do the
-	! first divide step without thinking.  BUT, the others are conditional,
-	! and are only done if %o3 >= 0.  Because both %o3 and %o5 may have the high-
-	! order bit set in the first step, just falling into the regular
-	! division loop will mess up the first time around.
-	! So we unroll slightly...
-	Ldo_single_div:
-		deccc	%g5
-		bl	Lend_regular_divide
-		nop
-		sub	%o3, %o5, %o3
-		mov	1, %o2
-		b	Lend_single_divloop
-		nop
-	Lsingle_divloop:
-		sll	%o2, 1, %o2
-		bl	1f
-		srl	%o5, 1, %o5
-		! %o3 >= 0
-		sub	%o3, %o5, %o3
-		b	2f
-		inc	%o2
-	1:	! %o3 < 0
-		add	%o3, %o5, %o3
-		dec	%o2
-	2:
-	Lend_single_divloop:
-		deccc	%g5
-		bge	Lsingle_divloop
-		tst	%o3
-		b,a	Lend_regular_divide
-
-Lnot_really_big:
-1:
-	sll	%o5, 4, %o5
-	cmp	%o5, %o3
-	bleu	1b
-	inccc	%o4
-	be	Lgot_result
-	dec	%o4
-
-	tst	%o3	! set up for initial iteration
-Ldivloop:
-	sll	%o2, 4, %o2
-		! depth 1, accumulated bits 0
-	bl	L.1.16
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-			! depth 2, accumulated bits 1
-	bl	L.2.17
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-			! depth 3, accumulated bits 3
-	bl	L.3.19
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-			! depth 4, accumulated bits 7
-	bl	L.4.23
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (7*2+1), %o2
-	
-L.4.23:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (7*2-1), %o2
-	
-	
-L.3.19:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-			! depth 4, accumulated bits 5
-	bl	L.4.21
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (5*2+1), %o2
-	
-L.4.21:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (5*2-1), %o2
-	
-	
-	
-L.2.17:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-			! depth 3, accumulated bits 1
-	bl	L.3.17
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-			! depth 4, accumulated bits 3
-	bl	L.4.19
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (3*2+1), %o2
-	
-L.4.19:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (3*2-1), %o2
-	
-	
-L.3.17:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-			! depth 4, accumulated bits 1
-	bl	L.4.17
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (1*2+1), %o2
-	
-L.4.17:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (1*2-1), %o2
-	
-	
-	
-	
-L.1.16:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-			! depth 2, accumulated bits -1
-	bl	L.2.15
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-			! depth 3, accumulated bits -1
-	bl	L.3.15
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-			! depth 4, accumulated bits -1
-	bl	L.4.15
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (-1*2+1), %o2
-	
-L.4.15:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (-1*2-1), %o2
-	
-	
-L.3.15:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-			! depth 4, accumulated bits -3
-	bl	L.4.13
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (-3*2+1), %o2
-	
-L.4.13:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (-3*2-1), %o2
-	
-	
-	
-L.2.15:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-			! depth 3, accumulated bits -3
-	bl	L.3.13
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-			! depth 4, accumulated bits -5
-	bl	L.4.11
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (-5*2+1), %o2
-	
-L.4.11:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (-5*2-1), %o2
-	
-	
-L.3.13:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-			! depth 4, accumulated bits -7
-	bl	L.4.9
-	srl	%o5,1,%o5
-	! remainder is positive
-	subcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (-7*2+1), %o2
-	
-L.4.9:
-	! remainder is negative
-	addcc	%o3,%o5,%o3
-		b	9f
-		add	%o2, (-7*2-1), %o2
-	
-	
-	
-	
-	9:
-Lend_regular_divide:
-	deccc	%o4
-	bge	Ldivloop
-	tst	%o3
-	bl,a	Lgot_result
-	! non-restoring fixup here (one instruction only!)
-	add	%o3, %o1, %o3
-
-
-Lgot_result:
-	! check to see if answer should be < 0
-	tst	%g6
-	bl,a	1f
-	neg %o3
-1:
-	retl
-	mov %o3, %o0