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, 90 insertions, 0 deletions

diff --git a/rts/gmp/mpn/pa64w/add_n.s b/rts/gmp/mpn/pa64w/add_n.s
new file mode 100644
index 0000000000..1bb9e8fbc7
--- /dev/null
+++ b/rts/gmp/mpn/pa64w/add_n.s
@@ -0,0 +1,90 @@
+; HP-PA 2.0 __gmpn_add_n -- Add two limb vectors of the same length > 0 and
+; store sum in a third limb vector.
+
+; Copyright (C) 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.
+
+
+; INPUT PARAMETERS
+; res_ptr	gr26
+; s1_ptr	gr25
+; s2_ptr	gr24
+; size		gr23
+
+; This runs at 2 cycles/limb on PA8000.
+
+	.level	2.0w
+	.code
+	.export	__gmpn_add_n,entry
+__gmpn_add_n
+	.proc
+	.callinfo frame=0,args_saved
+	.entry
+
+	sub		%r0,%r23,%r22
+	depw,z		%r22,30,3,%r28		; r28 = 2 * (-n & 7)
+	depw,z		%r22,28,3,%r22		; r22 = 8 * (-n & 7)
+	sub		%r25,%r22,%r25		; offset s1_ptr
+	sub		%r24,%r22,%r24		; offset s2_ptr
+	sub		%r26,%r22,%r26		; offset res_ptr
+	blr		%r28,%r0		; branch into loop
+	add		%r0,%r0,%r0		; reset carry
+
+L$loop	ldd		0(%r25),%r20
+	ldd		0(%r24),%r31
+	add,dc		%r20,%r31,%r20
+	std		%r20,0(%r26)
+L$7	ldd		8(%r25),%r21
+	ldd		8(%r24),%r19
+	add,dc		%r21,%r19,%r21
+	std		%r21,8(%r26)
+L$6	ldd		16(%r25),%r20
+	ldd		16(%r24),%r31
+	add,dc		%r20,%r31,%r20
+	std		%r20,16(%r26)
+L$5	ldd		24(%r25),%r21
+	ldd		24(%r24),%r19
+	add,dc		%r21,%r19,%r21
+	std		%r21,24(%r26)
+L$4	ldd		32(%r25),%r20
+	ldd		32(%r24),%r31
+	add,dc		%r20,%r31,%r20
+	std		%r20,32(%r26)
+L$3	ldd		40(%r25),%r21
+	ldd		40(%r24),%r19
+	add,dc		%r21,%r19,%r21
+	std		%r21,40(%r26)
+L$2	ldd		48(%r25),%r20
+	ldd		48(%r24),%r31
+	add,dc		%r20,%r31,%r20
+	std		%r20,48(%r26)
+L$1	ldd		56(%r25),%r21
+	ldo		64(%r25),%r25
+	ldd		56(%r24),%r19
+	add,dc		%r21,%r19,%r21
+	std		%r21,56(%r26)
+	ldo		64(%r24),%r24
+	addib,>		-8,%r23,L$loop
+	ldo		64(%r26),%r26
+
+	add,dc		%r0,%r0,%r29
+	bve		(%r2)
+	.exit
+	copy		%r29,%r28
+	.procend