Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 177 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/lshift.S b/REORG.TODO/sysdeps/powerpc/powerpc64/lshift.S
new file mode 100644
index 0000000000..480e38688b
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/lshift.S
@@ -0,0 +1,177 @@
+/* PowerPC64 mpn_lshift -- rp[] = up[] << cnt
+   Copyright (C) 2003-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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 C 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 C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+#define RP       r3
+#define UP       r4
+#define N        r5
+#define CNT      r6
+
+#define TNC      r0
+#define U0      r30
+#define U1      r31
+#define RETVAL   r5
+
+EALIGN(__mpn_lshift, 5, 0)
+	std	U1, -8(r1)
+	std	U0, -16(r1)
+	subfic	TNC, CNT, 64
+	sldi	r7, N, RP
+	add	UP, UP, r7
+	add	RP, RP, r7
+	rldicl.	U0, N, 0, 62
+	cmpdi	CNT, U0, 2
+	addi	U1, N, RP
+	ld	r10, -8(UP)
+	srd	RETVAL, r10, TNC
+
+	srdi	U1, U1, 2
+	mtctr	U1
+	beq	cr0, L(b00)
+	blt	cr6, L(b01)
+	ld	r11, -16(UP)
+	beq	cr6, L(b10)
+
+	.align	4
+L(b11):	sld	r8, r10, CNT
+	srd	r9, r11, TNC
+	ld	U1, -24(UP)
+	addi	UP, UP, -24
+	sld	r12, r11, CNT
+	srd	r7, U1, TNC
+	addi	RP, RP, 16
+	bdnz	L(gt3)
+
+	or	r11, r8, r9
+	sld	r8, U1, CNT
+	b	L(cj3)
+
+	.align	4
+L(gt3):	ld	U0, -8(UP)
+	or	r11, r8, r9
+	sld	r8, U1, CNT
+	srd	r9, U0, TNC
+	ld	U1, -16(UP)
+	or	r10, r12, r7
+	b	L(L11)
+
+	.align	5
+L(b10):	sld	r12, r10, CNT
+	addi	RP, RP, 24
+	srd	r7, r11, TNC
+	bdnz	L(gt2)
+
+	sld	r8, r11, CNT
+	or	r10, r12, r7
+	b	L(cj2)
+
+L(gt2):	ld	U0, -24(UP)
+	sld	r8, r11, CNT
+	srd	r9, U0, TNC
+	ld	U1, -32(UP)
+	or	r10, r12, r7
+	sld	r12, U0, CNT
+	srd	r7, U1, 0
+	ld	U0, -40(UP)
+	or	r11, r8, r9
+	addi	UP, UP, -16
+	b	L(L10)
+
+	.align	4
+L(b00):	ld	U1, -16(UP)
+	sld	r12, r10, CNT
+	srd	r7, U1, TNC
+	ld	U0, -24(UP)
+	sld	r8, U1, CNT
+	srd	r9, U0, TNC
+	ld	U1, -32(UP)
+	or	r10, r12, r7
+	sld	r12, U0, CNT
+	srd	r7, U1, TNC
+	addi	RP, RP, r8
+	bdz	L(cj4)
+
+L(gt4):	addi	UP, UP, -32
+	ld	U0, -8(UP)
+	or	r11, r8, r9
+	b	L(L00)
+
+	.align	4
+L(b01):	bdnz	L(gt1)
+	sld	r8, r10, CNT
+	std	r8, -8(RP)
+	b	L(ret)
+
+L(gt1):	ld	U0, -16(UP)
+	sld	r8, r10, CNT
+	srd	r9, U0, TNC
+	ld	U1, -24(UP)
+	sld	r12, U0, CNT
+	srd	r7, U1, TNC
+	ld	U0, -32(UP)
+	or	r11, r8, r9
+	sld	r8, U1, CNT
+	srd	r9, U0, TNC
+	ld	U1, -40(UP)
+	addi	UP, UP, -40
+	or	r10, r12, r7
+	bdz	L(end)
+
+	.align	5
+L(top):	sld	r12, U0, CNT
+	srd	r7, U1, TNC
+	ld	U0, -8(UP)
+	std	r11, -8(RP)
+	or	r11, r8, r9
+L(L00):	sld	r8, U1, CNT
+	srd	r9, U0, TNC
+	ld	U1, -16(UP)
+	std	r10, -16(RP)
+	or	r10, r12, r7
+L(L11):	sld	r12, U0, CNT
+	srd	r7, U1, TNC
+	ld	U0, -24(UP)
+	std	r11, -24(RP)
+	or	r11, r8, r9
+L(L10):	sld	r8, U1, CNT
+	srd	r9, U0, TNC
+	ld	U1, -32(UP)
+	addi	UP, UP, -32
+	std	r10, -32(RP)
+	addi	RP, RP, -32
+	or	r10, r12, r7
+	bdnz	L(top)
+
+	.align	5
+L(end):	sld	r12, U0, CNT
+	srd	r7, U1, TNC
+	std	r11, -8(RP)
+L(cj4):	or	r11, r8, r9
+	sld	r8, U1, CNT
+	std	r10, -16(RP)
+L(cj3):	or	r10, r12, r7
+	std	r11, -24(RP)
+L(cj2):	std	r10, -32(RP)
+	std	r8, -40(RP)
+
+L(ret):	ld	U1, -8(r1)
+	ld	U0, -16(r1)
+	mr	RP, RETVAL
+	blr
+END(__mpn_lshift)