summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/hppa/lshift.S
diff options
context:
space:
mode:
Diffstat (limited to 'libc/sysdeps/linux/hppa/lshift.S')
-rw-r--r--libc/sysdeps/linux/hppa/lshift.S66
1 files changed, 66 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/hppa/lshift.S b/libc/sysdeps/linux/hppa/lshift.S
new file mode 100644
index 000000000..151b283e5
--- /dev/null
+++ b/libc/sysdeps/linux/hppa/lshift.S
@@ -0,0 +1,66 @@
+;! HP-PA __mpn_lshift --
+
+;! Copyright (C) 1992, 1994 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 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 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 Lesser General Public
+;! License for more details.
+
+;! You should have received a copy of the GNU Lesser 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 gr26
+;! s_ptr gr25
+;! size gr24
+;! cnt gr23
+
+ .text
+ .export __mpn_lshift
+__mpn_lshift:
+ .proc
+ .callinfo frame=64,no_calls
+ .entry
+
+ sh2add %r24,%r25,%r25
+ sh2add %r24,%r26,%r26
+ ldws,mb -4(%r25),%r22
+ subi 32,%r23,%r1
+ mtsar %r1
+ addib,= -1,%r24,L$0004
+ vshd %r0,%r22,%r28 ;! compute carry out limb
+ ldws,mb -4(%r25),%r29
+ addib,= -1,%r24,L$0002
+ vshd %r22,%r29,%r20
+
+L$loop: ldws,mb -4(%r25),%r22
+ stws,mb %r20,-4(%r26)
+ addib,= -1,%r24,L$0003
+ vshd %r29,%r22,%r20
+ ldws,mb -4(%r25),%r29
+ stws,mb %r20,-4(%r26)
+ addib,<> -1,%r24,L$loop
+ vshd %r22,%r29,%r20
+
+L$0002: stws,mb %r20,-4(%r26)
+ vshd %r29,%r0,%r20
+ bv 0(%r2)
+ stw %r20,-4(%r26)
+L$0003: stws,mb %r20,-4(%r26)
+L$0004: vshd %r22,%r0,%r20
+ bv 0(%r2)
+ stw %r20,-4(%r26)
+
+ .exit
+ .procend