mach/shortcut.awk

   1 # Icky intimate knowledge of MiG output.
   2
   3 BEGIN { print "/* This file is generated by shortcut.awk.  */";
   4         echo=1;
   5         inproto=0; proto=""; arglist="";
   6       }
   7
   8 $1 == "LINTLIBRARY" { print "#include <mach.h>"; next }
   9
  10 $1 == "weak_alias" { next }
  11
  12 # Copy the first line of the definition, but
  13 # replace the function name (RPC) with CALL.
  14 $NF == rpc \
  15   {
  16     for (i = 1; i < NF; ++i) printf "%s ", $i;
  17     print call;
  18     next;
  19   }
  20
  21 # Collect the lines of the prototype in PROTO, and extract the parameter
  22 # names into ARGLIST.
  23 NF == 1 && $1 == ")" { inproto=0 }
  24 inproto { proto = proto $0;
  25           arg = $NF;
  26           gsub(/[^a-zA-Z0-9_,]/, "", arg);
  27           arglist = arglist arg;
  28         }
  29 NF == 1 && $1 == "(" { inproto=1 }
  30
  31 /^{$/ { echo=0; }
  32
  33 echo == 1 { print $0; }
  34
  35 /^}$/ && proto != "" \
  36   {
  37     print "{";
  38     print "  kern_return_t err;";
  39     print "  extern kern_return_t " syscall " (" proto ");";
  40     print "  extern kern_return_t " rpc " (" proto ");";
  41     print "  err = " syscall " (" arglist ");";
  42     print "  if (err == MACH_SEND_INTERRUPTED)";
  43     print "    err = " rpc " (" arglist ");";
  44     print "  return err;"
  45     print "}";
  46     print "weak_alias (" call ", " alias ")";
  47     # Declare RPC so the weak_alias that follows will work.
  48     print "extern __typeof (" call ") " rpc ";";
  49     echo = 1;
  50   }