diff options
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/powerpc32/mul_1.S')
| -rw-r--r-- | REORG.TODO/sysdeps/powerpc/powerpc32/mul_1.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc32/mul_1.S b/REORG.TODO/sysdeps/powerpc/powerpc32/mul_1.S new file mode 100644 index 0000000000..c3093e2bc6 --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/powerpc32/mul_1.S @@ -0,0 +1,45 @@ +/* Multiply a limb vector by a limb, for PowerPC. + Copyright (C) 1993-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C 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 C 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 C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +/* mp_limb_t mpn_mul_1 (mp_ptr res_ptr, mp_srcptr s1_ptr, + mp_size_t s1_size, mp_limb_t s2_limb) + Calculate s1*s2 and put result in res_ptr; return carry. */ + +ENTRY (__mpn_mul_1) + mtctr r5 + + lwz r0,0(r4) + mullw r7,r0,r6 + mulhwu r10,r0,r6 + addi r3,r3,-4 # adjust res_ptr + addic r5,r5,0 # clear cy with dummy insn + bdz L(1) + +L(0): lwzu r0,4(r4) + stwu r7,4(r3) + mullw r8,r0,r6 + adde r7,r8,r10 + mulhwu r10,r0,r6 + bdnz L(0) + +L(1): stw r7,4(r3) + addze r3,r10 + blr +END (__mpn_mul_1) |