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exec: introduce target_words_bigendian() helper

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We currently have a virtio_is_big_endian() helper that provides the target
endianness to the virtio code. As of today, the helper returns a fixed
compile-time value. Of course, this will have to change if we want to
support target endianness changes at run-time.

Let's move the TARGET_WORDS_BIGENDIAN bits out to a new helper and have
virtio_is_big_endian() implemented on top of it.

This patch doesn't change any functionality.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Greg Kurz 2014-06-24 19:26:29 +02:00 • committed by Michael S. Tsirkin
parent 6b321a3df5
commit 98ed8ecfc9
3 changed files with 8 additions and 9 deletions
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8
exec.c
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@ -2759,14 +2759,12 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr,
}
#endif
#if !defined(CONFIG_USER_ONLY)
/*
* A helper function for the _utterly broken_ virtio device model to find out if
* it's running on a big endian machine. Don't do this at home kids!
*/
bool virtio_is_big_endian(void);
bool virtio_is_big_endian(void)
bool target_words_bigendian(void);
bool target_words_bigendian(void)
{
#if defined(TARGET_WORDS_BIGENDIAN)
return true;
@ -2775,8 +2773,6 @@ bool virtio_is_big_endian(void)
#endif
}
#endif
#ifndef CONFIG_USER_ONLY
bool cpu_physical_memory_is_io(hwaddr phys_addr)
{