1/* hppa lshift 2 * optimized for the PA7100, where it runs at 3.25 cycles/limb 3 * 4 * Copyright (C) 1992, 1994, 1998, 5 * 2001, 2002 Free Software Foundation, Inc. 6 * 7 * This file is part of Libgcrypt. 8 * 9 * Libgcrypt is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU Lesser General Public License as 11 * published by the Free Software Foundation; either version 2.1 of 12 * the License, or (at your option) any later version. 13 * 14 * Libgcrypt is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 22 */ 23 24 25 26/******************* 27 * mpi_limb_t 28 * _gcry_mpih_lshift( mpi_ptr_t wp, (gr26) 29 * mpi_ptr_t up, (gr25) 30 * mpi_size_t usize, (gr24) 31 * unsigned cnt) (gr23) 32 */ 33 34 .code 35 .export _gcry_mpih_lshift 36 .label _gcry_mpih_lshift 37 .proc 38 .callinfo frame=64,no_calls 39 .entry 40 41 sh2add %r24,%r25,%r25 42 sh2add %r24,%r26,%r26 43 ldws,mb -4(0,%r25),%r22 44 subi 32,%r23,%r1 45 mtsar %r1 46 addib,= -1,%r24,L$0004 47 vshd %r0,%r22,%r28 ; compute carry out limb 48 ldws,mb -4(0,%r25),%r29 49 addib,<= -5,%r24,L$rest 50 vshd %r22,%r29,%r20 51 52 .label L$loop 53 ldws,mb -4(0,%r25),%r22 54 stws,mb %r20,-4(0,%r26) 55 vshd %r29,%r22,%r20 56 ldws,mb -4(0,%r25),%r29 57 stws,mb %r20,-4(0,%r26) 58 vshd %r22,%r29,%r20 59 ldws,mb -4(0,%r25),%r22 60 stws,mb %r20,-4(0,%r26) 61 vshd %r29,%r22,%r20 62 ldws,mb -4(0,%r25),%r29 63 stws,mb %r20,-4(0,%r26) 64 addib,> -4,%r24,L$loop 65 vshd %r22,%r29,%r20 66 67 .label L$rest 68 addib,= 4,%r24,L$end1 69 nop 70 .label L$eloop 71 ldws,mb -4(0,%r25),%r22 72 stws,mb %r20,-4(0,%r26) 73 addib,<= -1,%r24,L$end2 74 vshd %r29,%r22,%r20 75 ldws,mb -4(0,%r25),%r29 76 stws,mb %r20,-4(0,%r26) 77 addib,> -1,%r24,L$eloop 78 vshd %r22,%r29,%r20 79 80 .label L$end1 81 stws,mb %r20,-4(0,%r26) 82 vshd %r29,%r0,%r20 83 bv 0(%r2) 84 stw %r20,-4(0,%r26) 85 .label L$end2 86 stws,mb %r20,-4(0,%r26) 87 .label L$0004 88 vshd %r22,%r0,%r20 89 bv 0(%r2) 90 stw %r20,-4(0,%r26) 91 92 .exit 93 .procend 94 95 96 97