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