diff options
Diffstat (limited to 'gmp-6.3.0/mpn/arm/com.asm')
| -rw-r--r-- | gmp-6.3.0/mpn/arm/com.asm | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/gmp-6.3.0/mpn/arm/com.asm b/gmp-6.3.0/mpn/arm/com.asm new file mode 100644 index 0000000..850b10a --- /dev/null +++ b/gmp-6.3.0/mpn/arm/com.asm @@ -0,0 +1,75 @@ +dnl ARM mpn_com. + +dnl Copyright 2003, 2012 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 StrongARM ? +C XScale ? +C Cortex-A7 ? +C Cortex-A8 ? +C Cortex-A9 2.0 +C Cortex-A15 1.75 + +define(`rp', `r0') +define(`up', `r1') +define(`n', `r2') + +ASM_START() +PROLOGUE(mpn_com) + tst n, #1 + beq L(skip1) + ldr r3, [up], #4 + mvn r3, r3 + str r3, [rp], #4 +L(skip1): + tst n, #2 + beq L(skip2) + ldmia up!, { r3, r12 } C load 2 limbs + mvn r3, r3 + mvn r12, r12 + stmia rp!, { r3, r12 } C store 2 limbs +L(skip2): + bics n, n, #3 + beq L(rtn) + stmfd sp!, { r7, r8, r9 } C save regs on stack + +L(top): ldmia up!, { r3, r8, r9, r12 } C load 4 limbs + subs n, n, #4 + mvn r3, r3 + mvn r8, r8 + mvn r9, r9 + mvn r12, r12 + stmia rp!, { r3, r8, r9, r12 } C store 4 limbs + bne L(top) + + ldmfd sp!, { r7, r8, r9 } C restore regs from stack +L(rtn): return lr +EPILOGUE() |