minix/lib/libsys/sys_trace.c

   1 #include "syslib.h"
   2
   3 int sys_trace(req, proc_ep, addr, data_p)
   4 int req;
   5 endpoint_t proc_ep;
   6 long addr, *data_p;
   7 {
   8   message m;
   9   int r;
  10
  11   m.m_lsys_krn_sys_trace.endpt = proc_ep;
  12   m.m_lsys_krn_sys_trace.request = req;
  13   m.m_lsys_krn_sys_trace.address = addr;
  14   if (data_p) m.m_lsys_krn_sys_trace.data = *data_p;
  15   r = _kernel_call(SYS_TRACE, &m);
  16   if (data_p) *data_p = m.m_krn_lsys_sys_trace.data;
  17   return(r);
  18 }