src/native_client/src/minsfi/trusted/syscall/heaplim.c

   1 /*
   2  * Copyright (c) 2014 The Native Client Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  */
   6
   7 #include "native_client/src/include/minsfi_syscalls.h"
   8
   9 int32_t __minsfi_syscall_heaplim(sfiptr_t dest_lower_limit,
  10                                  sfiptr_t dest_upper_limit) {
  11   const MinsfiSandbox *sb = MinsfiGetActiveSandbox();
  12
  13   sfiptr_t val_lower_limit = sb->mem_layout.heap.offset;
  14   sfiptr_t val_upper_limit = val_lower_limit + sb->mem_layout.heap.length;
  15
  16   MinsfiCopyToSandbox(dest_lower_limit, &val_lower_limit,
  17                       sizeof(val_lower_limit), sb);
  18   MinsfiCopyToSandbox(dest_upper_limit, &val_upper_limit,
  19                       sizeof(val_upper_limit), sb);
  20
  21   return 0;
  22 }