X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=gmp%2Fmpn%2Fsparc64%2Flshift.asm;fp=gmp%2Fmpn%2Fsparc64%2Flshift.asm;h=b3bbd9dd99383b7a1e5455705c1ab8f0a6134970;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git

diff --git a/gmp/mpn/sparc64/lshift.asm b/gmp/mpn/sparc64/lshift.asm
new file mode 100644
index 00000000..b3bbd9dd
--- /dev/null
+++ b/gmp/mpn/sparc64/lshift.asm
@@ -0,0 +1,152 @@
+dnl  SPARC v9 mpn_lshift
+
+dnl  Copyright 1996, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+
+dnl  This file is part of the GNU MP Library.
+
+dnl  The GNU MP Library is free software; you can redistribute it and/or modify
+dnl  it under the terms of the GNU Lesser General Public License as published
+dnl  by the Free Software Foundation; either version 3 of the License, or (at
+dnl  your option) any later version.
+
+dnl  The GNU MP Library is distributed in the hope that it will be useful, but
+dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+dnl  License for more details.
+
+dnl  You should have received a copy of the GNU Lesser General Public License
+dnl  along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.
+
+
+include(`../config.m4')
+
+C		   cycles/limb
+C UltraSPARC 1&2:     2
+C UltraSPARC 3:	      3.25
+
+C INPUT PARAMETERS
+define(`rp',`%i0')
+define(`up',`%i1')
+define(`n',`%i2')
+define(`cnt',`%i3')
+
+define(`u0',`%l0')
+define(`u1',`%l2')
+define(`u2',`%l4')
+define(`u3',`%l6')
+
+define(`tnc',`%i4')
+
+define(`fanop',`fitod %f0,%f2')		dnl  A quasi nop running in the FA pipe
+define(`fmnop',`fmuld %f0,%f0,%f4')	dnl  A quasi nop running in the FM pipe
+
+ASM_START()
+	REGISTER(%g2,#scratch)
+	REGISTER(%g3,#scratch)
+PROLOGUE(mpn_lshift)
+	save	%sp,-160,%sp
+
+	sllx	n,3,%g1
+	sub	%g0,cnt,tnc		C negate shift count
+	add	up,%g1,up		C make %o1 point at end of src
+	add	rp,%g1,rp		C make %o0 point at end of res
+	ldx	[up-8],u3		C load first limb
+	subcc	n,5,n
+	srlx	u3,tnc,%i5		C compute function result
+	sllx	u3,cnt,%g3
+	bl,pn	%icc,.Lend1234
+	fanop
+
+	subcc	n,4,n
+	ldx	[up-16],u0
+	ldx	[up-24],u1
+	add	up,-32,up
+	ldx	[up-0],u2
+	ldx	[up-8],u3
+	srlx	u0,tnc,%g2
+
+	bl,pn	%icc,.Lend5678
+	fanop
+
+	b,a	.Loop
+	.align	16
+.Loop:
+	sllx	u0,cnt,%g1
+	or	%g3,%g2,%g3
+	ldx	[up-16],u0
+	fanop
+C --
+	srlx	u1,tnc,%g2
+	subcc	n,4,n
+	stx	%g3,[rp-8]
+	fanop
+C --
+	sllx	u1,cnt,%g3
+	or	%g1,%g2,%g1
+	ldx	[up-24],u1
+	fanop
+C --
+	srlx	u2,tnc,%g2
+	stx	%g1,[rp-16]
+	add	up,-32,up
+	fanop
+C --
+	sllx	u2,cnt,%g1
+	or	%g3,%g2,%g3
+	ldx	[up-0],u2
+	fanop
+C --
+	srlx	u3,tnc,%g2
+	stx	%g3,[rp-24]
+	add	rp,-32,rp
+	fanop
+C --
+	sllx	u3,cnt,%g3
+	or	%g1,%g2,%g1
+	ldx	[up-8],u3
+	fanop
+C --
+	srlx	u0,tnc,%g2
+	stx	%g1,[rp-0]
+	bge,pt	%icc,.Loop
+	fanop
+C --
+.Lend5678:
+	sllx	u0,cnt,%g1
+	or	%g3,%g2,%g3
+	srlx	u1,tnc,%g2
+	stx	%g3,[rp-8]
+	sllx	u1,cnt,%g3
+	or	%g1,%g2,%g1
+	srlx	u2,tnc,%g2
+	stx	%g1,[rp-16]
+	sllx	u2,cnt,%g1
+	or	%g3,%g2,%g3
+	srlx	u3,tnc,%g2
+	stx	%g3,[rp-24]
+	add	rp,-32,rp
+	sllx	u3,cnt,%g3		C carry...
+	or	%g1,%g2,%g1
+	stx	%g1,[rp-0]
+
+.Lend1234:
+	addcc	n,4,n
+	bz,pn	%icc,.Lret
+	fanop
+.Loop0:
+	add	rp,-8,rp
+	subcc	n,1,n
+	ldx	[up-16],u3
+	add	up,-8,up
+	srlx	u3,tnc,%g2
+	or	%g3,%g2,%g3
+	stx	%g3,[rp]
+	sllx	u3,cnt,%g3
+	bnz,pt	%icc,.Loop0
+	fanop
+.Lret:
+	stx	%g3,[rp-8]
+	mov	%i5,%i0
+	ret
+	restore
+EPILOGUE(mpn_lshift)