39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/* Utility functions for the QEMU PALcode.
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Copyright (C) 2011 Richard Henderson
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This file is part of QEMU PALcode.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the text
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of the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not see
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<http://www.gnu.org/licenses/>. */
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#include "protos.h"
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static inline long
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ndelay_with_int(unsigned long nsec)
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{
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register long a0 __asm__("16") = nsec;
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register long v0 __asm__("0");
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asm volatile ("call_pal 3" : "=r"(v0) : "r"(a0));
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return v0;
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}
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void
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ndelay(unsigned long nsec)
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{
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long left = nsec;
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do {
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left = ndelay_with_int(left);
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} while (left > 0);
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}
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