diff options
Diffstat (limited to 'sysdeps/x86_64/mul_1.S')
| -rw-r--r-- | sysdeps/x86_64/mul_1.S | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/sysdeps/x86_64/mul_1.S b/sysdeps/x86_64/mul_1.S new file mode 100644 index 0000000000..978916b72c --- /dev/null +++ b/sysdeps/x86_64/mul_1.S @@ -0,0 +1,42 @@ +/* AMD64 __mpn_mul_1 -- Multiply a limb vector with a limb and store + the result in a second limb vector. + Copyright (C) 2004 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. */ + +#include <sysdep.h> +#include "asm-syntax.h" + + .text +ENTRY (__mpn_mul_1) + movq %rdx, %r11 + leaq (%rsi,%rdx,8), %rsi + leaq (%rdi,%rdx,8), %rdi + negq %r11 + xorl %r8d, %r8d +L(loop): + movq (%rsi,%r11,8), %rax + mulq %rcx + addq %r8, %rax + movl $0, %r8d + adcq %rdx, %r8 + movq %rax, (%rdi,%r11,8) + incq %r11 + jne L(loop) + movq %r8, %rax + ret +END (__mpn_mul_1) |