NaCl: Copy PNaCl translator IRT interfaces to the Chromium side

ppapi/nacl_irt/irt_pnacl_translator_link.cc

Index: ppapi/nacl_irt/irt_pnacl_translator_link.cc
diff --git a/ppapi/nacl_irt/irt_pnacl_translator_link.cc b/ppapi/nacl_irt/irt_pnacl_translator_link.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f5569aa54acb25d180a14432fd9f922c4b2c3c57
--- /dev/null
+++ b/ppapi/nacl_irt/irt_pnacl_translator_link.cc
@@ -0,0 +1,61 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "native_client/src/shared/platform/nacl_log.h"
+#include "native_client/src/shared/srpc/nacl_srpc.h"
+#include "native_client/src/untrusted/irt/irt_dev.h"
+#include "ppapi/nacl_irt/irt_interfaces.h"
+
+namespace {
+
+const int kMaxObjectFiles = 16;
+
+int (*g_func)(int nexe_fd,
+              const int* obj_file_fds,
+              int obj_file_fd_count);
+
+void HandleLinkRequest(NaClSrpcRpc* rpc,
+                       NaClSrpcArg** in_args,
+                       NaClSrpcArg** out_args,
+                       NaClSrpcClosure* done) {
+  int obj_file_count = in_args[0]->u.ival;
+  int nexe_fd = in_args[kMaxObjectFiles + 1]->u.hval;
+
+  if (obj_file_count < 1 || obj_file_count > kMaxObjectFiles) {
+    NaClLog(LOG_FATAL, "Bad object file count (%i)\n", obj_file_count);
+  }
+  int obj_file_fds[obj_file_count];
+  for (int i = 0; i < obj_file_count; i++) {
+    obj_file_fds[i] = in_args[i + 1]->u.hval;
+  }
+
+  int result = g_func(nexe_fd, obj_file_fds, obj_file_count);
+
+  rpc->result = result == 0 ? NACL_SRPC_RESULT_OK : NACL_SRPC_RESULT_APP_ERROR;
+  done->Run(done);
+}
+
+const struct NaClSrpcHandlerDesc kSrpcMethods[] = {
+  { "RunWithSplit:ihhhhhhhhhhhhhhhhh:", HandleLinkRequest },
+  { NULL, NULL },
+};
+
+void ServeLinkRequest(int (*func)(int nexe_fd,
+                                  const int* obj_file_fds,
+                                  int obj_file_fd_count)) {
+  g_func = func;
+  if (!NaClSrpcModuleInit()) {
+    NaClLog(LOG_FATAL, "NaClSrpcModuleInit() failed\n");
+  }
+  if (!NaClSrpcAcceptClientConnection(kSrpcMethods)) {
+    NaClLog(LOG_FATAL, "NaClSrpcAcceptClientConnection() failed\n");
+  }
+}
+
+}
+
+const struct nacl_irt_private_pnacl_translator_link
+    nacl_irt_private_pnacl_translator_link = {
+  ServeLinkRequest
+};