diff options
Diffstat (limited to 'grub-core/lib/libgcrypt/mpi/sparc32v8/mpih-mul3.S')
| -rw-r--r-- | grub-core/lib/libgcrypt/mpi/sparc32v8/mpih-mul3.S | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/grub-core/lib/libgcrypt/mpi/sparc32v8/mpih-mul3.S b/grub-core/lib/libgcrypt/mpi/sparc32v8/mpih-mul3.S new file mode 100644 index 0000000..93bb194 --- /dev/null +++ b/grub-core/lib/libgcrypt/mpi/sparc32v8/mpih-mul3.S @@ -0,0 +1,67 @@ +/* SPARC v8 __mpn_submul_1 -- Multiply a limb vector with a limb and + * subtract the result from a second limb vector. + * + * Copyright (C) 1992, 1993, 1994, 1998, + * 2001, 2002 Free Software Foundation, Inc. + * + * This file is part of Libgcrypt. + * + * Libgcrypt 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. + * + * Libgcrypt 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 this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * + * Note: This code is heavily based on the GNU MP Library. + * Actually it's the same code with only minor changes in the + * way the data is stored; this is to support the abstraction + * of an optional secure memory allocation which may be used + * to avoid revealing of sensitive data due to paging etc. + */ + + +! INPUT PARAMETERS +! res_ptr o0 +! s1_ptr o1 +! size o2 +! s2_limb o3 + +#include "sysdep.h" + +.text + .align 4 + .global C_SYMBOL_NAME(_gcry_mpih_submul_1) +C_SYMBOL_NAME(_gcry_mpih_submul_1): + sub %g0,%o2,%o2 ! negate ... + sll %o2,2,%o2 ! ... and scale size + sub %o1,%o2,%o1 ! o1 is offset s1_ptr + sub %o0,%o2,%g1 ! g1 is offset res_ptr + + mov 0,%o0 ! clear cy_limb + +Loop: ld [%o1+%o2],%o4 + ld [%g1+%o2],%g2 + umul %o4,%o3,%o5 + rd %y,%g3 + addcc %o5,%o0,%o5 + addx %g3,0,%o0 + subcc %g2,%o5,%g2 + addx %o0,0,%o0 + st %g2,[%g1+%o2] + + addcc %o2,4,%o2 + bne Loop + nop + + retl + nop + + |