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sim: dv-sockser: add stub funcs when not available

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This lets ports assume that the dv-sockser API is always available if
they want to.  This way we don't have to do an abort at configure time
and it makes the resulting code a bit simpler.
This commit is contained in:
Mike Frysinger
2015-03-22 22:23:04 -04:00
parent 80fc77e6c1
commit 3649cb0656
11 changed files with 61 additions and 36 deletions
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37
sim/common/dv-sockser.h
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@ -19,11 +19,15 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef DV_SOCKSER_H
#define DV_SOCKSER_H
#include "sim-inline.h"
/* bits in result of dev_sockser_status */
#define DV_SOCKSER_INPUT_EMPTY 0x1
#define DV_SOCKSER_OUTPUT_EMPTY 0x2
#define DV_SOCKSER_DISCONNECTED 0x4
#ifdef HAVE_DV_SOCKSER
/* FIXME: later add a device ptr arg */
extern int dv_sockser_status (SIM_DESC);
int dv_sockser_write (SIM_DESC, unsigned char);
@ -32,4 +36,37 @@ int dv_sockser_read (SIM_DESC);
SIM_RC dv_sockser_install (SIM_DESC);
#else
/* If dv-sockser isn't available, provide stub functions. */
STATIC_INLINE int
dv_sockser_status (SIM_DESC sd)
{
return (DV_SOCKSER_INPUT_EMPTY |
DV_SOCKSER_OUTPUT_EMPTY |
DV_SOCKSER_DISCONNECTED);
}
STATIC_INLINE int
dv_sockser_write (SIM_DESC sd, unsigned char c)
{
return -1;
}
STATIC_INLINE int
dv_sockser_write_buffer (SIM_DESC sd, const unsigned char *buffer,
unsigned nr_bytes)
{
return -1;
}
STATIC_INLINE int
dv_sockser_read (SIM_DESC sd)
{
return -1;
}
#endif /* HAVE_DV_SOCKSER */
#endif /* DV_SOCKSER_H */