DCMD_PROC_SETFPREG

Set the Floating Point Data registers with the values provided for the process associated with the file descriptor. You must have opened the file descriptor for writing. The argument is a pointer to a procfs_fpreg structure (see debug_fpreg_t in <sys/debug.h>) that specifies the values of the Floating Point Data registers. For example:

procfs_fpreg my_fpreg;

/* Set the members of my_fpreg as required. */
devctl( fd, DCMD_PROC_SETFPREG, my_fpreg, sizeof(procfs_fpreg),
        NULL);
  

To get the Floating Point Data registers, use DCMD_PROC_GETFPREG .