diff options
Diffstat (limited to 'gmp/mpn/powerpc32/sec_tabselect.asm')
| -rw-r--r-- | gmp/mpn/powerpc32/sec_tabselect.asm | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/gmp/mpn/powerpc32/sec_tabselect.asm b/gmp/mpn/powerpc32/sec_tabselect.asm new file mode 100644 index 0000000000..a3f24d5678 --- /dev/null +++ b/gmp/mpn/powerpc32/sec_tabselect.asm @@ -0,0 +1,141 @@ +dnl PowerPC-32 mpn_sec_tabselect. + +dnl Contributed to the GNU project by Torbjörn Granlund. + +dnl Copyright 2011-2013 Free Software Foundation, Inc. + +dnl This file is part of the GNU MP Library. +dnl +dnl The GNU MP Library is free software; you can redistribute it and/or modify +dnl it under the terms of either: +dnl +dnl * the GNU Lesser General Public License as published by the Free +dnl Software Foundation; either version 3 of the License, or (at your +dnl option) any later version. +dnl +dnl or +dnl +dnl * the GNU General Public License as published by the Free Software +dnl Foundation; either version 2 of the License, or (at your option) any +dnl later version. +dnl +dnl or both in parallel, as here. +dnl +dnl The GNU MP Library is distributed in the hope that it will be useful, but +dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +dnl for more details. +dnl +dnl You should have received copies of the GNU General Public License and the +dnl GNU Lesser General Public License along with the GNU MP Library. If not, +dnl see https://www.gnu.org/licenses/. + +include(`../config.m4') + +C cycles/limb +C 603e: ? +C 604e: ? +C 75x (G3): ? +C 7400,7410 (G4): 2.5 +C 744x,745x (G4+): 2.0 +C power4/ppc970: 2.0 +C power5: ? + +define(`rp', `r3') +define(`tp', `r4') +define(`n', `r5') +define(`nents', `r6') +define(`which', `r7') + +define(`i', `r8') +define(`j', `r9') +define(`stride', `r12') +define(`mask', `r11') + + +ASM_START() +PROLOGUE(mpn_sec_tabselect) + addic. j, n, -4 C outer loop induction variable + stmw r27, -32(r1) + slwi stride, n, 2 + + blt cr0, L(outer_end) +L(outer_top): + mtctr nents + mr r10, tp + li r28, 0 + li r29, 0 + li r30, 0 + li r31, 0 + addic. j, j, -4 C outer loop induction variable + mr i, which + + ALIGN(16) +L(top): addic i, i, -1 C set carry iff i != 0 + subfe mask, mask, mask + lwz r0, 0(tp) + lwz r27, 4(tp) + and r0, r0, mask + and r27, r27, mask + or r28, r28, r0 + or r29, r29, r27 + lwz r0, 8(tp) + lwz r27, 12(tp) + and r0, r0, mask + and r27, r27, mask + or r30, r30, r0 + or r31, r31, r27 + add tp, tp, stride + bdnz L(top) + + stw r28, 0(rp) + stw r29, 4(rp) + stw r30, 8(rp) + stw r31, 12(rp) + addi tp, r10, 16 + addi rp, rp, 16 + bge cr0, L(outer_top) +L(outer_end): + + andi. r0, n, 2 + beq cr0, L(b0x) +L(b1x): mtctr nents + mr r10, tp + li r28, 0 + li r29, 0 + mr i, which + ALIGN(16) +L(tp2): addic i, i, -1 + subfe mask, mask, mask + lwz r0, 0(tp) + lwz r27, 4(tp) + and r0, r0, mask + and r27, r27, mask + or r28, r28, r0 + or r29, r29, r27 + add tp, tp, stride + bdnz L(tp2) + stw r28, 0(rp) + stw r29, 4(rp) + addi tp, r10, 8 + addi rp, rp, 8 + +L(b0x): andi. r0, n, 1 + beq cr0, L(b00) +L(b01): mtctr nents + mr r10, tp + li r28, 0 + mr i, which + ALIGN(16) +L(tp1): addic i, i, -1 + subfe mask, mask, mask + lwz r0, 0(tp) + and r0, r0, mask + or r28, r28, r0 + add tp, tp, stride + bdnz L(tp1) + stw r28, 0(rp) + +L(b00): lmw r27, -32(r1) + blr +EPILOGUE() |