| dnl PowerPC mftb_function -- read time base registers. |
| |
| dnl Copyright 2002 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 mftb_function (unsigned a[2]); |
| C |
| |
| ASM_START() |
| PROLOGUE(mftb_function) |
| |
| C r3 a |
| |
| L(again): |
| mftbu r4 |
| mftb r5 |
| mftbu r6 |
| cmpw cr0, r4, r6 |
| bne L(again) |
| |
| stw r5, 0(r3) |
| stw r4, 4(r3) |
| blr |
| |
| EPILOGUE() |