diff options
Diffstat (limited to 'gmp-6.3.0/mpn/x86_64/coreisbr/cnd_add_n.asm')
| -rw-r--r-- | gmp-6.3.0/mpn/x86_64/coreisbr/cnd_add_n.asm | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/gmp-6.3.0/mpn/x86_64/coreisbr/cnd_add_n.asm b/gmp-6.3.0/mpn/x86_64/coreisbr/cnd_add_n.asm new file mode 100644 index 0000000..43abcc8 --- /dev/null +++ b/gmp-6.3.0/mpn/x86_64/coreisbr/cnd_add_n.asm @@ -0,0 +1,174 @@ +dnl AMD64 mpn_cnd_add_n. + +dnl Copyright 2011-2013, 2017 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 AMD K8,K9 +C AMD K10 +C AMD bd1 +C AMD bd2 +C AMD bd3 +C AMD bd4 +C AMD zen +C AMD bobcat +C AMD jaguar +C Intel P4 +C Intel PNR 3.0 +C Intel NHM 3.75 +C Intel SBR 1.93 +C Intel IBR 1.89 +C Intel HWL 1.78 +C Intel BWL 1.50 +C Intel SKL 1.50 +C Intel atom +C Intel SLM 4.0 +C VIA nano + +C NOTES +C * It might seem natural to use the cmov insn here, but since this function +C is supposed to have the exact same execution pattern for cnd true and +C false, and since cmov's documentation is not clear about whether it +C actually reads both source operands and writes the register for a false +C condition, we cannot use it. + +C INPUT PARAMETERS +define(`cnd_arg', `%rdi') dnl rcx +define(`rp', `%rsi') dnl rdx +define(`up', `%rdx') dnl r8 +define(`vp', `%rcx') dnl r9 +define(`n', `%r8') dnl rsp+40 + +define(`cnd', `%rbx') + +define(ADDSUB, add) +define(ADCSBB, adc) +define(func, mpn_cnd_add_n) + +ABI_SUPPORT(DOS64) +ABI_SUPPORT(STD64) + +ASM_START() + TEXT + ALIGN(16) +PROLOGUE(mpn_cnd_add_n) + FUNC_ENTRY(4) +IFDOS(` mov 56(%rsp), R32(%r8)') + push %rbx + + neg cnd_arg + sbb cnd, cnd C make cnd mask + + test $1, R8(n) + jz L(x0) +L(x1): test $2, R8(n) + jz L(b1) + +L(b3): mov (vp), %rdi + mov 8(vp), %r9 + mov 16(vp), %r10 + and cnd, %rdi + and cnd, %r9 + and cnd, %r10 + ADDSUB (up), %rdi + mov %rdi, (rp) + ADCSBB 8(up), %r9 + mov %r9, 8(rp) + ADCSBB 16(up), %r10 + mov %r10, 16(rp) + sbb R32(%rax), R32(%rax) C save carry + lea 24(up), up + lea 24(vp), vp + lea 24(rp), rp + sub $3, n + jnz L(top) + jmp L(end) + +L(x0): xor R32(%rax), R32(%rax) + test $2, R8(n) + jz L(top) + +L(b2): mov (vp), %rdi + mov 8(vp), %r9 + and cnd, %rdi + and cnd, %r9 + ADDSUB (up), %rdi + mov %rdi, (rp) + ADCSBB 8(up), %r9 + mov %r9, 8(rp) + sbb R32(%rax), R32(%rax) C save carry + lea 16(up), up + lea 16(vp), vp + lea 16(rp), rp + sub $2, n + jnz L(top) + jmp L(end) + +L(b1): mov (vp), %rdi + and cnd, %rdi + ADDSUB (up), %rdi + mov %rdi, (rp) + sbb R32(%rax), R32(%rax) C save carry + lea 8(up), up + lea 8(vp), vp + lea 8(rp), rp + dec n + jz L(end) + + ALIGN(16) +L(top): mov (vp), %rdi + mov 8(vp), %r9 + mov 16(vp), %r10 + mov 24(vp), %r11 + lea 32(vp), vp + and cnd, %rdi + and cnd, %r9 + and cnd, %r10 + and cnd, %r11 + add R32(%rax), R32(%rax) C restore carry + ADCSBB (up), %rdi + mov %rdi, (rp) + ADCSBB 8(up), %r9 + mov %r9, 8(rp) + ADCSBB 16(up), %r10 + mov %r10, 16(rp) + ADCSBB 24(up), %r11 + lea 32(up), up + mov %r11, 24(rp) + lea 32(rp), rp + sbb R32(%rax), R32(%rax) C save carry + sub $4, n + jnz L(top) + +L(end): neg R32(%rax) + pop %rbx + FUNC_EXIT() + ret +EPILOGUE() |