| # 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 |