src/include/unistd.h

   1 #ifndef _UNISTD_H
   2 #define _UNISTD_H
   3
   4 FILE_LICENCE ( GPL2_OR_LATER );
   5
   6 #include <stddef.h>
   7 #include <stdarg.h>
   8
   9 extern int execv ( const char *command, char * const argv[] );
  10
  11 /**
  12  * Execute command
  13  *
  14  * @v command           Command name
  15  * @v arg ...           Argument list (starting with argv[0])
  16  * @ret rc              Command exit status
  17  *
  18  * This is a front end to execv().
  19  */
  20 #define execl( command, arg, ... ) ( {                                  \
  21                 char * const argv[] = { (arg), ## __VA_ARGS__ };        \
  22                 int rc = execv ( (command), argv );                     \
  23                 rc;                                                     \
  24         } )
  25
  26 /* Pick up udelay() */
  27 #include <gpxe/timer.h>
  28
  29 /*
  30  * sleep() prototype is defined by POSIX.1.  usleep() prototype is
  31  * defined by 4.3BSD.  udelay() and mdelay() prototypes are chosen to
  32  * be reasonably sensible.
  33  *
  34  */
  35
  36 extern unsigned int sleep ( unsigned int seconds );
  37 extern void mdelay ( unsigned long msecs );
  38
  39 static inline __always_inline void usleep ( unsigned long usecs ) {
  40         udelay ( usecs );
  41 }
  42
  43 #endif /* _UNISTD_H */