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Annotation of qemu/roms/qemu-palcode/util.c, revision 1.1

1.1     ! root        1: /* Utility functions for the QEMU PALcode.
        !             2: 
        !             3:    Copyright (C) 2011 Richard Henderson
        !             4: 
        !             5:    This file is part of QEMU PALcode.
        !             6: 
        !             7:    This program is free software; you can redistribute it and/or modify
        !             8:    it under the terms of the GNU General Public License as published by
        !             9:    the Free Software Foundation; either version 2 of the License or
        !            10:    (at your option) any later version.
        !            11: 
        !            12:    This program is distributed in the hope that it will be useful,
        !            13:    but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the text
        !            15:    of the GNU General Public License for more details.
        !            16: 
        !            17:    You should have received a copy of the GNU General Public License
        !            18:    along with this program; see the file COPYING.  If not see
        !            19:    <http://www.gnu.org/licenses/>.  */
        !            20: 
        !            21: #include "protos.h"
        !            22: 
        !            23: 
        !            24: void
        !            25: ndelay(unsigned long nsec)
        !            26: {
        !            27:   unsigned long target, now;
        !            28: 
        !            29:   /* ??? Fix race between setting an alarm and waiting for an interrupt,
        !            30:      so that we can use wtint here.  This isn't used much except for 
        !            31:      during startup, so it probably doesn't matter much.  */
        !            32: 
        !            33:   now = get_wall_time();
        !            34:   target = now + nsec;
        !            35: 
        !            36:   do
        !            37:     now = get_wall_time();
        !            38:   while (now < target);
        !            39: }

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