[MIPS] Implementation of sel_ldr for MIPS architecture.

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 65 matching lines @@
     'x86-64': [],
     # 'x86-64': ['rdi', 'rsi', 'rdx', 'rcx', 'r8', 'r9'],
     'arm-32': [],
     # 'arm-32': [ 'r0',  'r1',  'r2',  'r3'],
     # while the arm calling convention passes arguments in registers,
     # the arm trampoline code pushes them onto the untrusted stack first
     # before transferring control to trusted code.  this uses up some
     # more untrusted stack space / memory/cache bandwidth, but we had
     # to save these arguments somewhere, either in a processor context
     # or on-stack, anyway.
+    'mips-32': [],
+    # 'mips-32': [ 'a0',  'a1',  'a2',  'a3'],
     }
 
 # Our syscall handling code, in nacl_syscall.S, always pushes the
 # syscall arguments onto the untrusted user stack.  The syscall
 # arguments get snapshotted from there into a per-syscall structure,
 # to eliminate time-of-check vs time-of-use issues -- we always only
 # refer to syscall arguments from this snapshot, rather than from the
 # untrusted memory locations.
 
 
@@ skipping 233 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))