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Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpn/arm/v6/addmul_2.asm')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpn/arm/v6/addmul_2.asm | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/arm/v6/addmul_2.asm b/Build/source/libs/gmp/gmp-6.0.0/mpn/arm/v6/addmul_2.asm new file mode 100644 index 00000000000..69817ce340d --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/arm/v6/addmul_2.asm @@ -0,0 +1,138 @@ +dnl ARM mpn_addmul_2. + +dnl Contributed to the GNU project by Torbjörn Granlund. + +dnl Copyright 2012, 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 StrongARM: - +C XScale - +C Cortex-A7 ? +C Cortex-A8 ? +C Cortex-A9 2.25 +C Cortex-A15 2.5 + +C This is believed to be optimal for A15 for any unrolling, and optimal for A9 +C for 4-way unrolling. Using separate pointer update instructions is necessary +C for optimal A9 speed. + +C TODO: +C * Start the first multiply or multiplies directly at function entry. + + +define(`rp',`r0') +define(`up',`r1') +define(`n', `r2') +define(`vp',`r3') + +define(`v0',`r6') +define(`v1',`r7') +define(`u0',`r3') +define(`u1',`r9') + +define(`cya',`r8') +define(`cyb',`r12') + + +ASM_START() +PROLOGUE(mpn_addmul_2) + push { r4, r5, r6, r7, r8, r9 } + + ldm vp, { v0, v1 } + mov cya, #0 + mov cyb, #0 + + tst n, #1 + beq L(evn) + +L(odd): ldr r5, [rp, #0] + ldr u0, [up, #0] + ldr r4, [rp, #4] + tst n, #2 + beq L(fi1) +L(fi3): sub up, up, #12 + sub rp, rp, #12 + b L(lo3) +L(fi1): sub n, n, #1 + sub up, up, #4 + sub rp, rp, #4 + b L(lo1) + +L(evn): ldr r4, [rp, #0] + ldr u1, [up, #0] + ldr r5, [rp, #4] + tst n, #2 + bne L(fi2) +L(fi0): sub up, up, #8 + sub rp, rp, #8 + b L(lo0) +L(fi2): subs n, n, #2 + bls L(end) + + ALIGN(16) +L(top): ldr u0, [up, #4] + umaal r4, cya, u1, v0 + str r4, [rp, #0] + ldr r4, [rp, #8] + umaal r5, cyb, u1, v1 +L(lo1): ldr u1, [up, #8] + umaal r5, cya, u0, v0 + str r5, [rp, #4] + ldr r5, [rp, #12] + umaal r4, cyb, u0, v1 +L(lo0): ldr u0, [up, #12] + umaal r4, cya, u1, v0 + str r4, [rp, #8] + ldr r4, [rp, #16] + umaal r5, cyb, u1, v1 +L(lo3): ldr u1, [up, #16] + umaal r5, cya, u0, v0 + str r5, [rp, #12] + ldr r5, [rp, #20] + add rp, rp, #16 + umaal r4, cyb, u0, v1 + add up, up, #16 + subs n, n, #4 + bhi L(top) + +L(end): umaal r4, cya, u1, v0 + ldr u0, [up, #4] + umaal r5, cyb, u1, v1 + str r4, [rp, #0] + umaal r5, cya, u0, v0 + umaal cya, cyb, u0, v1 + str r5, [rp, #4] + str cya, [rp, #8] + mov r0, cyb + + pop { r4, r5, r6, r7, r8, r9 } + bx r14 +EPILOGUE() |