aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libgmp/mpn/sparc64/rshift.s
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/libgmp/mpn/sparc64/rshift.s')
-rw-r--r--contrib/libgmp/mpn/sparc64/rshift.s93
1 files changed, 93 insertions, 0 deletions
diff --git a/contrib/libgmp/mpn/sparc64/rshift.s b/contrib/libgmp/mpn/sparc64/rshift.s
new file mode 100644
index 000000000000..ff6a3801602a
--- /dev/null
+++ b/contrib/libgmp/mpn/sparc64/rshift.s
@@ -0,0 +1,93 @@
+! SPARC v9 __mpn_rshift --
+
+! Copyright (C) 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
+
+.section ".text"
+ .align 4
+ .global __mpn_rshift
+ .type __mpn_rshift,#function
+ .proc 04
+__mpn_rshift:
+ ldx [%o1],%g2 ! load first limb
+ sub %g0,%o3,%o5 ! negate shift count
+ add %o2,-1,%o2
+ and %o2,4-1,%g4 ! number of limbs in first loop
+ sllx %g2,%o5,%g1 ! compute function result
+ brz,pn %g4,.L0 ! if multiple of 4 limbs, skip first loop
+ stx %g1,[%sp+80]
+
+ sub %o2,%g4,%o2 ! adjust count for main loop
+
+.Loop0: ldx [%o1+8],%g3
+ add %o0,8,%o0
+ add %o1,8,%o1
+ add %g4,-1,%g4
+ srlx %g2,%o3,%o4
+ sllx %g3,%o5,%g1
+ mov %g3,%g2
+ or %o4,%g1,%o4
+ brnz,pt %g4,.Loop0
+ stx %o4,[%o0-8]
+
+.L0: brz,pn %o2,.Lend
+ nop
+
+.Loop: ldx [%o1+8],%g3
+ add %o0,32,%o0
+ add %o2,-4,%o2
+ srlx %g2,%o3,%o4
+ sllx %g3,%o5,%g1
+
+ ldx [%o1+16],%g2
+ srlx %g3,%o3,%g4
+ or %o4,%g1,%o4
+ stx %o4,[%o0-32]
+ sllx %g2,%o5,%g1
+
+ ldx [%o1+24],%g3
+ srlx %g2,%o3,%o4
+ or %g4,%g1,%g4
+ stx %g4,[%o0-24]
+ sllx %g3,%o5,%g1
+
+ ldx [%o1+32],%g2
+ srlx %g3,%o3,%g4
+ or %o4,%g1,%o4
+ stx %o4,[%o0-16]
+ sllx %g2,%o5,%g1
+
+ add %o1,32,%o1
+ or %g4,%g1,%g4
+ brnz %o2,.Loop
+ stx %g4,[%o0-8]
+
+.Lend: srlx %g2,%o3,%g2
+ stx %g2,[%o0-0]
+ retl
+ ldx [%sp+80],%o0
+.LLfe1:
+ .size __mpn_rshift,.LLfe1-__mpn_rshift