Reorganisation of the source tree

Most of the other users of the fptools build system have migrated to
Cabal, and with the move to darcs we can now flatten the source tree
without losing history, so here goes.

The main change is that the ghc/ subdir is gone, and most of what it
contained is now at the top level.  The build system now makes no
pretense at being multi-project, it is just the GHC build system.

No doubt this will break many things, and there will be a period of
instability while we fix the dependencies.  A straightforward build
should work, but I haven't yet fixed binary/source distributions.
Changes to the Building Guide will follow, too.

1 files changed, 151 insertions, 0 deletions

diff --git a/rts/gmp/mpn/alpha/udiv_qrnnd.S b/rts/gmp/mpn/alpha/udiv_qrnnd.S
new file mode 100644
index 0000000000..53814bbcb0
--- /dev/null
+++ b/rts/gmp/mpn/alpha/udiv_qrnnd.S
@@ -0,0 +1,151 @@
+ # Alpha 21064 __udiv_qrnnd
+
+ # Copyright (C) 1992, 1994, 1995, 1997, 2000 Free Software Foundation, Inc.
+
+ # This file is part of the GNU MP Library.
+
+ # The GNU MP Library is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU Lesser General Public License as published by
+ # the Free Software Foundation; either version 2.1 of the License, or (at your
+ # option) any later version.
+
+ # The GNU MP Library is distributed in the hope that it will be useful, but
+ # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ # or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+ # License for more details.
+
+ # You should have received a copy of the GNU Lesser General Public License
+ # along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
+ # the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ # MA 02111-1307, USA.
+
+
+	.set noreorder
+	.set noat
+.text
+	.align	3
+	.globl	__gmpn_udiv_qrnnd
+	.ent	__gmpn_udiv_qrnnd
+__gmpn_udiv_qrnnd:
+	.frame $30,0,$26,0
+	.prologue 0
+#define cnt	$2
+#define tmp	$3
+#define rem_ptr	$16
+#define n1	$17
+#define n0	$18
+#define d	$19
+#define qb	$20
+
+	ldiq	cnt,16
+	blt	d,.Largedivisor
+
+.Loop1:	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	d,n1,qb
+	subq	n1,d,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	d,n1,qb
+	subq	n1,d,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	d,n1,qb
+	subq	n1,d,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	d,n1,qb
+	subq	n1,d,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	subq	cnt,1,cnt
+	bgt	cnt,.Loop1
+	stq	n1,0(rem_ptr)
+	bis	$31,n0,$0
+	ret	$31,($26),1
+
+.Largedivisor:
+	and	n0,1,$4
+
+	srl	n0,1,n0
+	sll	n1,63,tmp
+	or	tmp,n0,n0
+	srl	n1,1,n1
+
+	and	d,1,$6
+	srl	d,1,$5
+	addq	$5,$6,$5
+
+.Loop2:	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	$5,n1,qb
+	subq	n1,$5,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	$5,n1,qb
+	subq	n1,$5,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	$5,n1,qb
+	subq	n1,$5,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	cmplt	n0,0,tmp
+	addq	n1,n1,n1
+	bis	n1,tmp,n1
+	addq	n0,n0,n0
+	cmpule	$5,n1,qb
+	subq	n1,$5,tmp
+	cmovne	qb,tmp,n1
+	bis	n0,qb,n0
+	subq	cnt,1,cnt
+	bgt	cnt,.Loop2
+
+	addq	n1,n1,n1
+	addq	$4,n1,n1
+	bne	$6,.LOdd
+	stq	n1,0(rem_ptr)
+	bis	$31,n0,$0
+	ret	$31,($26),1
+
+.LOdd:
+	/* q' in n0. r' in n1 */
+	addq	n1,n0,n1
+	cmpult	n1,n0,tmp	# tmp := carry from addq
+	beq	tmp,.LLp6
+	addq	n0,1,n0
+	subq	n1,d,n1
+.LLp6:	cmpult	n1,d,tmp
+	bne	tmp,.LLp7
+	addq	n0,1,n0
+	subq	n1,d,n1
+.LLp7:
+	stq	n1,0(rem_ptr)
+	bis	$31,n0,$0
+	ret	$31,($26),1
+
+	.end	__gmpn_udiv_qrnnd