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FreeBSD compat layer: fixed bus_space_barrier for x86_64

This commit is contained in:
Jérôme Duval 2013-11-06 13:31:02 +01:00
parent 24394a9d11
commit 4089e1c1ca
1 changed files with 6 additions and 2 deletions
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8
src/libs/compat/freebsd_network/compat/machine/bus.h
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@ -14,7 +14,7 @@
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
@ -23,7 +23,7 @@
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
@ -231,7 +231,11 @@ bus_space_barrier(bus_space_tag_t tag, bus_space_handle_t handle,
bus_size_t offset, bus_size_t len, int flags)
{
if (flags & BUS_SPACE_BARRIER_READ)
#ifdef __x86_64__
__asm__ __volatile__ ("lock; addl $0,0(%%rsp)" : : : "memory");
#else
__asm__ __volatile__ ("lock; addl $0,0(%%esp)" : : : "memory");
#endif
else
__asm__ __volatile__ ("" : : : "memory");
}