Add a get_random_bytes() syscall to replace the SRPC-based implementation

src/trusted/service_runtime/nacl_syscall_handlers_gen.py

 #!/usr/bin/python
 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 #  This script produces wrapped versions of syscall implementation
 #  functions.  The wrappers extract syscall arguments from where the
 #  syscall trampoline saves them.
 #
 #  Note that NaCl modules are always ILP32 and compiled with a
@@ skipping 20 matching lines @@
  */
 
 #include "native_client/src/trusted/service_runtime/nacl_syscall_common.h"
 #include "native_client/src/trusted/service_runtime/sys_exception.h"
 #include "native_client/src/trusted/service_runtime/sys_fdio.h"
 #include "native_client/src/trusted/service_runtime/sys_filename.h"
 #include "native_client/src/trusted/service_runtime/sys_imc.h"
 #include "native_client/src/trusted/service_runtime/sys_list_mappings.h"
 #include "native_client/src/trusted/service_runtime/sys_memory.h"
 #include "native_client/src/trusted/service_runtime/sys_parallel_io.h"
+#include "native_client/src/trusted/service_runtime/sys_random.h"
 
 """
 
 
 TABLE_INITIALIZER = """\
 
 /* auto generated */
 
 void NaClSyscallTableInit() {
   int i;
@@ skipping 156 matching lines @@
      ['uint32_t handler_addr', 'uint32_t old_handler']),
     ('NACL_sys_exception_stack', 'NaClSysExceptionStack',
      ['uint32_t stack_addr', 'uint32_t stack_size']),
     ('NACL_sys_exception_clear_flag', 'NaClSysExceptionClearFlag', []),
     ('NACL_sys_test_infoleak', 'NaClSysTestInfoLeak', []),
     ('NACL_sys_test_crash', 'NaClSysTestCrash', ['int crash_type']),
     ('NACL_sys_futex_wait_abs', 'NaClSysFutexWaitAbs',
      ['uint32_t addr', 'uint32_t value', 'uint32_t abstime_ptr']),
     ('NACL_sys_futex_wake', 'NaClSysFutexWake',
      ['uint32_t addr', 'uint32_t nwake']),
+    ('NACL_sys_get_random_bytes', 'NaClSysGetRandomBytes',
+     ['uint32_t buf_addr', 'uint32_t buf_size']),
     ]
 
 
 # Syscall arguments MUST be declared in a simple-to-parse manner!
 # They must match the following regexp:
 
 ARG_RE = r'\s*((\w+\s+)+\**)\s*(\w+)'
 
 # where matchobj.group(1) is the type, and matchobj.group(3) is the
 # identifer.
@@ skipping 123 matching lines @@
   protos = SYSCALL_LIST
   print >>output_dst, data
   PrintImplSkel(arch, protos, output_dst)
   PrintSyscallTableInitializer(protos, output_dst)
 
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))