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Diffstat (limited to 'gmp/mpn/vax/rshift.s')
| -rw-r--r-- | gmp/mpn/vax/rshift.s | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gmp/mpn/vax/rshift.s b/gmp/mpn/vax/rshift.s new file mode 100644 index 0000000000..ae27208e2c --- /dev/null +++ b/gmp/mpn/vax/rshift.s @@ -0,0 +1,54 @@ +# VAX mpn_rshift -- right shift. + +# Copyright 1999, 2000, 2001 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 3 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. If not, see http://www.gnu.org/licenses/. + + +# INPUT PARAMETERS +# rptr (sp + 4) +# sptr (sp + 8) +# size (sp + 12) +# cnt (sp + 16) +# r0=retval r1=size r2,r3=itmp r4,r5=otmp call-used registers +# r6=sptr r7=rptr r8=cnt r9 r10 r11 call-saved registers + +.text + .align 1 +.globl ___gmpn_rshift +___gmpn_rshift: + .word 0x1c0 + movl 4(ap),r7 + movl 8(ap),r6 + movl 12(ap),r1 + movl 16(ap),r8 + + movl (r6)+,r2 + subl3 r8,$32,r8 + ashl r8,r2,r0 + decl r1 + jeql Lend + +Loop: movl (r6)+,r3 + ashq r8,r2,r4 + movl r5,(r7)+ + movl r3,r2 + sobgtr r1,Loop + +Lend: clrl r3 + ashq r8,r2,r4 + movl r5,(r7) + ret |