ki_util.c

用于TM1300/PNX1300系列DSP（主要用于视频处理）的操作系统pSOS。包括全部源码

#include "kernel_interface.h"

#ifndef __TCS__


#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <signal.h>

static struct {
    DIRECTORY   directory;
    QUEUE       queues[SMEM_MAXNODES + 1];
} *unix_shared_mem;

#define KEY_VAL 0x23450974


#endif


/***********************************************/
/* init_shmem: initialize shared memory        */
/*  INPUTS:                                    */
/* RETURNS:                                    */
/***********************************************/
ULONG init_shmem()
{
#ifndef __TCS__
  int shmid;
  char msg[50];

  /* create DIRECTORY shared memory segment */
  shmid = shmget(KEY_VAL,sizeof(*unix_shared_mem),IPC_CREAT|0x1ff);
  if(shmid==-1) {
    sprintf(msg,"shmget DIRECTORY failed: node %d",My_Node);
    perror(msg);
    return FAT_SHM;
  }
  /* attach to DIRECTORY shared memory segment */
  unix_shared_mem = (void *)shmat(shmid,0,0);
  if((int)unix_shared_mem==-1) {
    sprintf(msg,"shmat DIRECTORY failed: node %d",My_Node);
    perror(msg);
    return FAT_SHM;
  }

  k_directory = &(unix_shared_mem->directory);
  k_queues    =  (unix_shared_mem->queues);
#endif
  return 0;
}




/***********************************************/
/* ki_bcopy: copy packet from shared memory    */
/*           queue of one node to another      */
/*  INPUTS: source packet                      */
/*          destination packet                 */
/*          length of packet                   */
/* RETURNS:                                    */
/***********************************************/
extern void ki_bcopy(ULONG *src, ULONG *dst, ULONG length)
{
  memcpy(dst,src,length);
}


struct arglist
    {
    ULONG	arg1;
    ULONG	arg2;
    ULONG	arg3;
    ULONG	arg4;
    ULONG	arg5;
    ULONG	arg6;
    ULONG	arg7;
    ULONG	arg8;
};

ULONG CALL_ENTRY(void (*svcj_tab)(), ULONG func, struct arglist *args, void *pks)
{
  return svc_call(func,args->arg1,args->arg2,args->arg3,args->arg4,args->arg5,
	   args->arg6,args->arg7,args->arg8,pks);
}


void xfatal_err(ULONG fcode, ULONG origin)
{
  _k_fatal(fcode,origin);
}