libgo/runtime/go-unsafe-newarray.c

   1 /* go-unsafe-newarray.c -- unsafe.NewArray function for Go.
   2
   3    Copyright 2009 The Go Authors. All rights reserved.
   4    Use of this source code is governed by a BSD-style
   5    license that can be found in the LICENSE file.  */
   6
   7 #include "go-alloc.h"
   8 #include "go-type.h"
   9 #include "interface.h"
  10
  11 /* Implement unsafe.NewArray.  */
  12
  13 void *NewArray (struct __go_empty_interface type, int n)
  14   asm ("libgo_unsafe.unsafe.NewArray");
  15
  16 /* The dynamic type of the argument will be a pointer to a type
  17    descriptor.  */
  18
  19 void *
  20 NewArray (struct __go_empty_interface type, int n)
  21 {
  22   const struct __go_type_descriptor *descriptor;
  23
  24   /* FIXME: We should check __type_descriptor to verify that this is
  25      really a type descriptor.  */
  26   descriptor = (const struct __go_type_descriptor *) type.__object;
  27   return __go_alloc (descriptor->__size * n);
  28 }