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, 93 insertions, 0 deletions

diff --git a/rts/gmp/mpn/a29k/lshift.s b/rts/gmp/mpn/a29k/lshift.s
new file mode 100644
index 0000000000..93e1917127
--- /dev/null
+++ b/rts/gmp/mpn/a29k/lshift.s
@@ -0,0 +1,93 @@
+; 29000 __gmpn_lshift --
+
+; Copyright (C) 1992, 1994, 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.
+
+
+; INPUT PARAMETERS
+; res_ptr	lr2
+; s1_ptr	lr3
+; s2_ptr	lr4
+; size		lr5
+
+; We use the loadm/storem instructions and operate on chunks of 8
+; limbs/per iteration, until less than 8 limbs remain.
+
+	.sect .lit,lit
+	.text
+	.align	4
+	.global	___gmpn_lshift
+	.word	0x60000
+___gmpn_lshift:
+	sll	gr116,lr4,2
+	add	lr3,gr116,lr3
+	add	lr2,gr116,lr2
+	sub	lr3,lr3,4
+	load	0,0,gr119,lr3
+
+	subr	gr116,lr5,32
+	srl	gr96,gr119,gr116	; return value
+	sub	lr4,lr4,1		; actual loop count is SIZE - 1
+
+	srl	gr117,lr4,3		; chuck count = (actual count) / 8
+	cpeq	gr118,gr117,0
+	jmpt	gr118,Ltail
+	 mtsr	fc,lr5
+
+	sub	gr117,gr117,2		; count for jmpfdec
+
+; Main loop working 8 limbs/iteration.
+Loop:	sub	lr3,lr3,32
+	mtsrim	cr,(8-1)
+	loadm	0,0,gr100,lr3
+
+	extract	gr109,gr119,gr107
+	extract	gr108,gr107,gr106
+	extract	gr107,gr106,gr105
+	extract	gr106,gr105,gr104
+	extract	gr105,gr104,gr103
+	extract	gr104,gr103,gr102
+	extract	gr103,gr102,gr101
+	extract	gr102,gr101,gr100
+
+	sub	lr2,lr2,32
+	mtsrim	cr,(8-1)
+	storem	0,0,gr102,lr2
+	jmpfdec	gr117,Loop
+	 or	gr119,gr100,0
+
+; Code for the last up-to-7 limbs.
+
+	and	lr4,lr4,(8-1)
+Ltail:	cpeq	gr118,lr4,0
+	jmpt	gr118,Lend
+	 sub	lr4,lr4,2		; count for jmpfdec
+
+Loop2:	sub	lr3,lr3,4
+	load	0,0,gr116,lr3
+	extract	gr117,gr119,gr116
+	sub	lr2,lr2,4
+	store	0,0,gr117,lr2
+	jmpfdec	lr4,Loop2
+	 or	gr119,gr116,0
+
+Lend:	extract	gr117,gr119,0
+	sub	lr2,lr2,4
+	jmpi	lr0
+	 store	0,0,gr117,lr2