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-rw-r--r--sysdeps/powerpc/lshift.s479
1 files changed, 479 insertions, 0 deletions
diff --git a/sysdeps/powerpc/lshift.s b/sysdeps/powerpc/lshift.s
new file mode 100644
index 0000000000..9612a3dbec
--- /dev/null
+++ b/sysdeps/powerpc/lshift.s
@@ -0,0 +1,479 @@
+ # Shift a limb left, low level routine.
+ # Copyright (C) 1996, 1997 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 Library General Public License as
+ # published by the Free Software Foundation; either version 2 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
+ # Library General Public License for more details.
+ #
+ # You should have received a copy of the GNU Library General Public
+ # License along with the GNU C 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.
+
+ # mp_limb_t mpn_lshift (mp_ptr wp, mp_srcptr up, mp_size_t usize,
+ #			 unsigned int cnt)
+
+	.align 3
+	.globl __mpn_lshift
+	.type	 __mpn_lshift,@function
+__mpn_lshift:
+	mtctr	%r5		# copy size into CTR
+	cmplwi	%cr0,%r5,16	# is size < 16
+	slwi	%r0,%r5,2
+	add	%r7,%r3,%r0	# make r7 point at end of res
+	add	%r4,%r4,%r0	# make r4 point at end of s1
+	lwzu	%r11,-4(%r4)	# load first s1 limb
+	subfic	%r8,%r6,32
+	srw	%r3,%r11,%r8	# compute function return value
+	bge	%cr0,Lbig	# branch if size >= 16
+
+	bdz	Lend1
+
+Loop:	lwzu	%r10,-4(%r4)
+	slw	%r9,%r11,%r6
+	srw	%r12,%r10,%r8
+	or	%r9,%r9,%r12
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slw	%r9,%r10,%r6
+	srw	%r12,%r11,%r8
+	or	%r9,%r9,%r12
+	stwu	%r9,-4(%r7)
+	bdnz	Loop
+	b	Lend1
+
+ # Guaranteed not to succeed.
+LBoom:	tweq    %r0,%r0
+
+ # We imitate a case statement, by using (yuk!) fixed-length code chunks,
+ # of size 4*12 bytes.  We have to do this (or something) to make this PIC.
+Lbig:	mflr    %r9
+	bltl    %cr0,LBoom      # Never taken, only used to set LR.
+	slwi    %r10,%r6,4
+	mflr    %r12
+	add     %r10,%r12,%r10
+	slwi	%r8,%r6,5
+	add     %r10,%r8,%r10
+	mtctr   %r10
+	addi	%r5,%r5,-1
+	mtlr    %r9
+	bctr
+
+Lend1:	slw	%r0,%r11,%r6
+	stw	%r0,-4(%r7)
+	blr
+
+	mtctr	%r5
+Loop1:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,1
+	inslwi	%r9,%r10,1,31
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,1
+	inslwi	%r9,%r11,1,31
+	stwu	%r9,-4(%r7)
+	bdnz	Loop1
+	b	Lend1
+
+	mtctr	%r5
+Loop2:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,2
+	inslwi	%r9,%r10,2,30
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,2
+	inslwi	%r9,%r11,2,30
+	stwu	%r9,-4(%r7)
+	bdnz	Loop2
+	b	Lend1
+
+	mtctr	%r5
+Loop3:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,3
+	inslwi	%r9,%r10,3,29
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,3
+	inslwi	%r9,%r11,3,29
+	stwu	%r9,-4(%r7)
+	bdnz	Loop3
+	b	Lend1
+
+	mtctr	%r5
+Loop4:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,4
+	inslwi	%r9,%r10,4,28
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,4
+	inslwi	%r9,%r11,4,28
+	stwu	%r9,-4(%r7)
+	bdnz	Loop4
+	b	Lend1
+
+	mtctr	%r5
+Loop5:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,5
+	inslwi	%r9,%r10,5,27
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,5
+	inslwi	%r9,%r11,5,27
+	stwu	%r9,-4(%r7)
+	bdnz	Loop5
+	b	Lend1
+
+	mtctr	%r5
+Loop6:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,6
+	inslwi	%r9,%r10,6,26
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,6
+	inslwi	%r9,%r11,6,26
+	stwu	%r9,-4(%r7)
+	bdnz	Loop6
+	b	Lend1
+
+	mtctr	%r5
+Loop7:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,7
+	inslwi	%r9,%r10,7,25
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,7
+	inslwi	%r9,%r11,7,25
+	stwu	%r9,-4(%r7)
+	bdnz	Loop7
+	b	Lend1
+
+	mtctr	%r5
+Loop8:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,8
+	inslwi	%r9,%r10,8,24
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,8
+	inslwi	%r9,%r11,8,24
+	stwu	%r9,-4(%r7)
+	bdnz	Loop8
+	b	Lend1
+
+	mtctr	%r5
+Loop9:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,9
+	inslwi	%r9,%r10,9,23
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,9
+	inslwi	%r9,%r11,9,23
+	stwu	%r9,-4(%r7)
+	bdnz	Loop9
+	b	Lend1
+
+	mtctr	%r5
+Loop10:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,10
+	inslwi	%r9,%r10,10,22
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,10
+	inslwi	%r9,%r11,10,22
+	stwu	%r9,-4(%r7)
+	bdnz	Loop10
+	b	Lend1
+
+	mtctr	%r5
+Loop11:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,11
+	inslwi	%r9,%r10,11,21
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,11
+	inslwi	%r9,%r11,11,21
+	stwu	%r9,-4(%r7)
+	bdnz	Loop11
+	b	Lend1
+
+	mtctr	%r5
+Loop12:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,12
+	inslwi	%r9,%r10,12,20
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,12
+	inslwi	%r9,%r11,12,20
+	stwu	%r9,-4(%r7)
+	bdnz	Loop12
+	b	Lend1
+
+	mtctr	%r5
+Loop13:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,13
+	inslwi	%r9,%r10,13,19
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,13
+	inslwi	%r9,%r11,13,19
+	stwu	%r9,-4(%r7)
+	bdnz	Loop13
+	b	Lend1
+
+	mtctr	%r5
+Loop14:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,14
+	inslwi	%r9,%r10,14,18
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,14
+	inslwi	%r9,%r11,14,18
+	stwu	%r9,-4(%r7)
+	bdnz	Loop14
+	b	Lend1
+
+	mtctr	%r5
+Loop15:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,15
+	inslwi	%r9,%r10,15,17
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,15
+	inslwi	%r9,%r11,15,17
+	stwu	%r9,-4(%r7)
+	bdnz	Loop15
+	b	Lend1
+
+	mtctr	%r5
+Loop16:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,16
+	inslwi	%r9,%r10,16,16
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,16
+	inslwi	%r9,%r11,16,16
+	stwu	%r9,-4(%r7)
+	bdnz	Loop16
+	b	Lend1
+
+	mtctr	%r5
+Loop17:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,17
+	inslwi	%r9,%r10,17,15
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,17
+	inslwi	%r9,%r11,17,15
+	stwu	%r9,-4(%r7)
+	bdnz	Loop17
+	b	Lend1
+
+	mtctr	%r5
+Loop18:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,18
+	inslwi	%r9,%r10,18,14
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,18
+	inslwi	%r9,%r11,18,14
+	stwu	%r9,-4(%r7)
+	bdnz	Loop18
+	b	Lend1
+
+	mtctr	%r5
+Loop19:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,19
+	inslwi	%r9,%r10,19,13
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,19
+	inslwi	%r9,%r11,19,13
+	stwu	%r9,-4(%r7)
+	bdnz	Loop19
+	b	Lend1
+
+	mtctr	%r5
+Loop20:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,20
+	inslwi	%r9,%r10,20,12
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,20
+	inslwi	%r9,%r11,20,12
+	stwu	%r9,-4(%r7)
+	bdnz	Loop20
+	b	Lend1
+
+	mtctr	%r5
+Loop21:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,21
+	inslwi	%r9,%r10,21,11
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,21
+	inslwi	%r9,%r11,21,11
+	stwu	%r9,-4(%r7)
+	bdnz	Loop21
+	b	Lend1
+
+	mtctr	%r5
+Loop22:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,22
+	inslwi	%r9,%r10,22,10
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,22
+	inslwi	%r9,%r11,22,10
+	stwu	%r9,-4(%r7)
+	bdnz	Loop22
+	b	Lend1
+
+	mtctr	%r5
+Loop23:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,23
+	inslwi	%r9,%r10,23,9
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,23
+	inslwi	%r9,%r11,23,9
+	stwu	%r9,-4(%r7)
+	bdnz	Loop23
+	b	Lend1
+
+	mtctr	%r5
+Loop24:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,24
+	inslwi	%r9,%r10,24,8
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,24
+	inslwi	%r9,%r11,24,8
+	stwu	%r9,-4(%r7)
+	bdnz	Loop24
+	b	Lend1
+
+	mtctr	%r5
+Loop25:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,25
+	inslwi	%r9,%r10,25,7
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,25
+	inslwi	%r9,%r11,25,7
+	stwu	%r9,-4(%r7)
+	bdnz	Loop25
+	b	Lend1
+
+	mtctr	%r5
+Loop26:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,26
+	inslwi	%r9,%r10,26,6
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,26
+	inslwi	%r9,%r11,26,6
+	stwu	%r9,-4(%r7)
+	bdnz	Loop26
+	b	Lend1
+
+	mtctr	%r5
+Loop27:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,27
+	inslwi	%r9,%r10,27,5
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,27
+	inslwi	%r9,%r11,27,5
+	stwu	%r9,-4(%r7)
+	bdnz	Loop27
+	b	Lend1
+
+	mtctr	%r5
+Loop28:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,28
+	inslwi	%r9,%r10,28,4
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,28
+	inslwi	%r9,%r11,28,4
+	stwu	%r9,-4(%r7)
+	bdnz	Loop28
+	b	Lend1
+
+	mtctr	%r5
+Loop29:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,29
+	inslwi	%r9,%r10,29,3
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,29
+	inslwi	%r9,%r11,29,3
+	stwu	%r9,-4(%r7)
+	bdnz	Loop29
+	b	Lend1
+
+	mtctr	%r5
+Loop30:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,30
+	inslwi	%r9,%r10,30,2
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,30
+	inslwi	%r9,%r11,30,2
+	stwu	%r9,-4(%r7)
+	bdnz	Loop30
+	b	Lend1
+
+	mtctr	%r5
+Loop31:	lwzu	%r10,-4(%r4)
+	slwi	%r9,%r11,31
+	inslwi	%r9,%r10,31,1
+	stwu	%r9,-4(%r7)
+	bdz	Lend2
+	lwzu	%r11,-4(%r4)
+	slwi	%r9,%r10,31
+	inslwi	%r9,%r11,31,1
+	stwu	%r9,-4(%r7)
+	bdnz	Loop31
+	b	Lend1
+
+Lend2:	slw	%r0,%r10,%r6
+	stw	%r0,-4(%r7)
+	blr
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-16 19:46:43 +0000