lib/libsys/sys_mcontext.c

   1 #include "syslib.h"
   2
   3 int sys_getmcontext(proc, mcp)
   4 endpoint_t proc;                /* process retrieving context */
   5 vir_bytes mcp;                  /* where to store context */
   6 {
   7 /* A process wants to store its context in mcp. */
   8
   9   message m;
  10   int r;
  11
  12   m.m_lsys_krn_sys_getmcontext.endpt = proc;
  13   m.m_lsys_krn_sys_getmcontext.ctx_ptr = mcp;
  14   r = _kernel_call(SYS_GETMCONTEXT, &m);
  15   return r;
  16 }
  17
  18 int sys_setmcontext(proc, mcp)
  19 endpoint_t proc;                /* process setting context */
  20 vir_bytes mcp;                  /* where to get context from */
  21 {
  22 /* A process wants to restore context stored in ucp. */
  23
  24   message m;
  25   int r;
  26
  27   m.m_lsys_krn_sys_setmcontext.endpt = proc;
  28   m.m_lsys_krn_sys_setmcontext.ctx_ptr = mcp;
  29   r = _kernel_call(SYS_SETMCONTEXT, &m);
  30   return r;
  31 }
  32