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| author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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| committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
| commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
| tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/sysdeps/powerpc/powerpc32/submul_1.S | |
| parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
| download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip | |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/powerpc32/submul_1.S')
| -rw-r--r-- | REORG.TODO/sysdeps/powerpc/powerpc32/submul_1.S | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/powerpc32/submul_1.S b/REORG.TODO/sysdeps/powerpc/powerpc32/submul_1.S new file mode 100644 index 0000000000..c1183c40f9 --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/powerpc32/submul_1.S @@ -0,0 +1,51 @@ +/* Multiply a limb vector by a single 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_submul_1 (mp_ptr res_ptr, mp_srcptr s1_ptr, + mp_size_t s1_size, mp_limb_t s2_limb) + Calculate res-s1*s2 and put result back in res; return carry. */ + +ENTRY (__mpn_submul_1) + mtctr r5 + + lwz r0,0(r4) + mullw r7,r0,r6 + mulhwu r10,r0,r6 + lwz r9,0(r3) + subf r8,r7,r9 + addc r7,r7,r8 # invert cy (r7 is junk) + addi r3,r3,-4 # adjust res_ptr + bdz L(1) + +L(0): lwzu r0,4(r4) + stwu r8,4(r3) + mullw r8,r0,r6 + adde r7,r8,r10 + mulhwu r10,r0,r6 + lwz r9,4(r3) + addze r10,r10 + subf r8,r7,r9 + addc r7,r7,r8 # invert cy (r7 is junk) + bdnz L(0) + +L(1): stw r8,4(r3) + addze r3,r10 + blr +END (__mpn_submul_1) |