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-rw-r--r--contrib/libgmp/mpn/sparc32/lshift.S95
1 files changed, 95 insertions, 0 deletions
diff --git a/contrib/libgmp/mpn/sparc32/lshift.S b/contrib/libgmp/mpn/sparc32/lshift.S
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index 000000000000..4f0595f2fb63
--- /dev/null
+++ b/contrib/libgmp/mpn/sparc32/lshift.S
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+! sparc __mpn_lshift --
+
+! Copyright (C) 1995, 1996 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 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 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 Library General Public
+! License for more details.
+
+! You should have received a copy of the GNU Library 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 %o0
+! src_ptr %o1
+! size %o2
+! cnt %o3
+
+#include "sysdep.h"
+
+ .text
+ .align 4
+ .global C_SYMBOL_NAME(__mpn_lshift)
+C_SYMBOL_NAME(__mpn_lshift):
+ sll %o2,2,%g1
+ add %o1,%g1,%o1 ! make %o1 point at end of src
+ ld [%o1-4],%g2 ! load first limb
+ sub %g0,%o3,%o5 ! negate shift count
+ add %o0,%g1,%o0 ! make %o0 point at end of res
+ add %o2,-1,%o2
+ andcc %o2,4-1,%g4 ! number of limbs in first loop
+ srl %g2,%o5,%g1 ! compute function result
+ be L0 ! if multiple of 4 limbs, skip first loop
+ st %g1,[%sp+80]
+
+ sub %o2,%g4,%o2 ! adjust count for main loop
+
+Loop0: ld [%o1-8],%g3
+ add %o0,-4,%o0
+ add %o1,-4,%o1
+ addcc %g4,-1,%g4
+ sll %g2,%o3,%o4
+ srl %g3,%o5,%g1
+ mov %g3,%g2
+ or %o4,%g1,%o4
+ bne Loop0
+ st %o4,[%o0+0]
+
+L0: tst %o2
+ be Lend
+ nop
+
+Loop: ld [%o1-8],%g3
+ add %o0,-16,%o0
+ addcc %o2,-4,%o2
+ sll %g2,%o3,%o4
+ srl %g3,%o5,%g1
+
+ ld [%o1-12],%g2
+ sll %g3,%o3,%g4
+ or %o4,%g1,%o4
+ st %o4,[%o0+12]
+ srl %g2,%o5,%g1
+
+ ld [%o1-16],%g3
+ sll %g2,%o3,%o4
+ or %g4,%g1,%g4
+ st %g4,[%o0+8]
+ srl %g3,%o5,%g1
+
+ ld [%o1-20],%g2
+ sll %g3,%o3,%g4
+ or %o4,%g1,%o4
+ st %o4,[%o0+4]
+ srl %g2,%o5,%g1
+
+ add %o1,-16,%o1
+ or %g4,%g1,%g4
+ bne Loop
+ st %g4,[%o0+0]
+
+Lend: sll %g2,%o3,%g2
+ st %g2,[%o0-4]
+ retl
+ ld [%sp+80],%o0