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Annotation of qemu/roms/qemu-palcode/util.c, revision 1.1.1.1

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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