1                 : /*
       2                 :  * Copyright 2010 The Native Client Authors.  All rights reserved.
       3                 :  * Use of this source code is governed by a BSD-style license that can
       4                 :  * be found in the LICENSE file.
       5                 :  */
       6                 : 
       7                 : #include <stdio.h>
       8                 : #include <stdint.h>
       9                 : #include <sys/mman.h>
      10                 : #include <sys/types.h>
      11                 : 
      12                 : #include "native_client/src/shared/platform/nacl_find_addrsp.h"
      13                 : 
      14                 : #include "native_client/src/include/portability.h"
      15                 : #include "native_client/src/include/nacl_platform.h"
      16                 : #include "native_client/src/shared/platform/nacl_log.h"
      17                 : 
      18                 : /* bool */
      19               8 : int NaClFindAddressSpace(uintptr_t *addr, size_t memory_size) {
      20                 :   void *map_addr;
      21                 : 
      22               8 :   NaClLog(4,
      23                 :           "NaClFindAddressSpace: looking for %"NACL_PRIxS" bytes\n",
      24                 :           memory_size);
      25               8 :   map_addr = mmap(NULL, memory_size,
      26                 :                   PROT_READ | PROT_WRITE,
      27                 :                   MAP_ANONYMOUS | MAP_NORESERVE | MAP_PRIVATE,
      28                 :                   0,
      29                 :                   0);
      30               8 :   if (MAP_FAILED == map_addr) {
      31               0 :     return 0;
      32                 :   }
      33               8 :   NaClLog(4,
      34                 :           "NaClFindAddressSpace: got addr %"NACL_PRIxPTR"\n",
      35                 :           (uintptr_t) map_addr);
      36               8 :   *addr = (uintptr_t) map_addr;
      37               8 :   return 1;
      38                 : }