diff options
Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/coreisbr/mul_1.asm')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/coreisbr/mul_1.asm | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/coreisbr/mul_1.asm b/Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/coreisbr/mul_1.asm new file mode 100644 index 00000000000..ded7d899c23 --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/x86_64/coreisbr/mul_1.asm @@ -0,0 +1,161 @@ +dnl X86-64 mpn_mul_1 optimised for Intel Sandy Bridge. + +dnl Contributed to the GNU project by Torbjörn Granlund. + +dnl Copyright 2003-2005, 2007, 2008, 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 AMD K8,K9 +C AMD K10 +C AMD bd1 +C AMD bobcat +C Intel P4 +C Intel core2 +C Intel NHM +C Intel SBR 2.5 +C Intel IBR 2.4 +C Intel atom +C VIA nano + +C The loop of this code is the result of running a code generation and +C optimisation tool suite written by David Harvey and Torbjorn Granlund. + +C TODO +C * The loop is great, but the prologue code was quickly written. Tune it! +C * Add mul_1c entry point. +C * We could preserve one less register under DOS64 calling conventions, using +C r10 instead of rsi. + +define(`rp', `%rdi') C rcx +define(`up', `%rsi') C rdx +define(`n_param', `%rdx') C r8 +define(`v0', `%rcx') C r9 + +define(`n', `%r11') + +ABI_SUPPORT(DOS64) +ABI_SUPPORT(STD64) + +IFDOS(` define(`up', ``%rsi'')') dnl +IFDOS(` define(`rp', ``%rcx'')') dnl +IFDOS(` define(`v0', ``%r9'')') dnl +IFDOS(` define(`r9', ``rdi'')') dnl +IFDOS(` define(`n_param',``%r8'')') dnl +IFDOS(` define(`n', ``%r8'')') dnl +IFDOS(` define(`r8', ``r11'')') dnl + +ASM_START() + TEXT + ALIGN(16) +PROLOGUE(mpn_mul_1) + +IFDOS(``push %rsi '') +IFDOS(``push %rdi '') +IFDOS(``mov %rdx, %rsi '') + + mov (up), %rax + mov R32(`n_param'), R32(%r10) +IFSTD(` mov n_param, n ') + + lea (up,n_param,8), up + lea -8(rp,n_param,8), rp + neg n + mul v0 + and $3, R32(%r10) + jz L(b0) + cmp $2, R32(%r10) + jb L(b1) + jz L(b2) + +L(b3): add $-1, n + mov %rax, %r9 + mov %rdx, %r8 + mov 16(up,n,8), %rax + jmp L(L3) + +L(b1): mov %rax, %r9 + mov %rdx, %r8 + add $1, n + jnc L(L1) + mov %rax, (rp) + mov %rdx, %rax +IFDOS(``pop %rdi '') +IFDOS(``pop %rsi '') + ret + +L(b2): add $-2, n + mov %rax, %r8 + mov %rdx, %r9 + mov 24(up,n,8), %rax + jmp L(L2) + +L(b0): mov %rax, %r8 + mov %rdx, %r9 + mov 8(up,n,8), %rax + jmp L(L0) + + ALIGN(8) +L(top): mov %rdx, %r8 + add %rax, %r9 +L(L1): mov 0(up,n,8), %rax + adc $0, %r8 + mul v0 + add %rax, %r8 + mov %r9, 0(rp,n,8) + mov 8(up,n,8), %rax + mov %rdx, %r9 + adc $0, %r9 +L(L0): mul v0 + mov %r8, 8(rp,n,8) + add %rax, %r9 + mov %rdx, %r8 + mov 16(up,n,8), %rax + adc $0, %r8 +L(L3): mul v0 + mov %r9, 16(rp,n,8) + mov %rdx, %r9 + add %rax, %r8 + mov 24(up,n,8), %rax + adc $0, %r9 +L(L2): mul v0 + mov %r8, 24(rp,n,8) + add $4, n + jnc L(top) + +L(end): add %rax, %r9 + mov %rdx, %rax + adc $0, %rax + mov %r9, (rp) + +IFDOS(``pop %rdi '') +IFDOS(``pop %rsi '') + ret +EPILOGUE() |