diff options
Diffstat (limited to 'vendor/gmp-6.3.0/tune/pentium.asm')
-rw-r--r-- | vendor/gmp-6.3.0/tune/pentium.asm | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/tune/pentium.asm b/vendor/gmp-6.3.0/tune/pentium.asm new file mode 100644 index 0000000..fb1e833 --- /dev/null +++ b/vendor/gmp-6.3.0/tune/pentium.asm @@ -0,0 +1,60 @@ +dnl x86 pentium time stamp counter access routine. + +dnl Copyright 1999, 2000, 2005 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 void speed_cyclecounter (unsigned p[2]); +C +C Get the pentium rdtsc cycle counter, storing the least significant word in +C p[0] and the most significant in p[1]. +C +C cpuid is used to serialize execution. On big measurements this won't be +C significant but it may help make small single measurements more accurate. + + .text + ALIGN(8) + +defframe(PARAM_P,4) + +PROLOGUE(speed_cyclecounter) +deflit(`FRAME',0) + pushl %ebx +FRAME_pushl() + xorl %eax, %eax + cpuid + rdtsc + movl PARAM_P, %ebx + movl %eax, (%ebx) + movl %edx, 4(%ebx) + popl %ebx + ret +EPILOGUE() |