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/* void Shm_get_config( localnode, &shmcfg )
*
* This routine initializes, if necessary, and returns a pointer
* to the Shared Memory Configuration Table for the UNIX
* simulator.
*
* INPUT PARAMETERS:
* localnode - local node number
* shmcfg - address of pointer to SHM Config Table
*
* OUTPUT PARAMETERS:
* *shmcfg - pointer to SHM Config Table
*
* NOTES: This driver is capable of supporting a practically unlimited
* number of nodes.
*
* COPYRIGHT (c) 1989-1997.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may in
* the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <bsp.h>
#include <shm.h>
#include <sys/types.h> /* pid_t */
shm_config_table BSP_shm_cfgtbl;
int semid;
void Shm_Cause_interrupt_unix(
rtems_unsigned32 node
);
void Shm_Get_configuration(
rtems_unsigned32 localnode,
shm_config_table **shmcfg
)
{
_CPU_SHM_Init(
Shm_Maximum_nodes,
Shm_Is_master_node(),
(void **)&BSP_shm_cfgtbl.base,
(unsigned32 *)&BSP_shm_cfgtbl.length
);
BSP_shm_cfgtbl.format = SHM_BIG;
BSP_shm_cfgtbl.cause_intr = Shm_Cause_interrupt_unix;
#ifdef NEUTRAL_BIG
BSP_shm_cfgtbl.convert = NULL_CONVERT;
#else
BSP_shm_cfgtbl.convert = CPU_swap_u32;
#endif
if ( _CPU_SHM_Get_vector() ) {
BSP_shm_cfgtbl.poll_intr = INTR_MODE;
BSP_shm_cfgtbl.Intr.address = (vol_u32 *) _CPU_Get_pid(); /* process id */
BSP_shm_cfgtbl.Intr.value = _CPU_SHM_Get_vector(); /* signal to send */
BSP_shm_cfgtbl.Intr.length = LONG;
} else {
BSP_shm_cfgtbl.poll_intr = POLLED_MODE;
BSP_shm_cfgtbl.Intr.address = NO_INTERRUPT;
BSP_shm_cfgtbl.Intr.value = NO_INTERRUPT;
BSP_shm_cfgtbl.Intr.length = NO_INTERRUPT;
}
*shmcfg = &BSP_shm_cfgtbl;
}
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