powerpc.asm
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上传日期:2022-08-06
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- dnl PowerPC mftb_function -- read time base registers.
- dnl Copyright 2002 Free Software Foundation, Inc.
- dnl
- 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
- dnl modify it under the terms of the GNU Lesser General Public License as
- dnl published by the Free Software Foundationn; either version 3 of the
- dnl License, or (at your option) any later version.
- dnl
- dnl The GNU MP Library is distributed in the hope that it will be useful,
- dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
- dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- dnl Lesser General Public License for more details.
- dnl
- dnl You should have received a copy of the GNU Lesser General Public License
- dnl along with the GNU MP Library. If not, see http://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
- cmp cr0, r4, r6
- bne L(again)
- stw r5, 0(r3)
- stw r4, 4(r3)
- blr
- EPILOGUE()