Mojo + NaCl prototype.

mojo/monacl/gen/mojo_syscall.cc.template

+// Copyright 2014 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.
+
+// WARNING this file was generated by $script_name
+// Do not edit by hand.
+
+#include "mojo/monacl/mojo_syscall.h"
+
+#include <stdio.h>
+
+#include "mojo/public/c/system/core.h"
+#include "native_client/src/public/nacl_app.h"
+#include "native_client/src/shared/platform/nacl_log.h"
+#include "native_client/src/trusted/desc/nacl_desc_custom.h"
+#include "native_client/src/trusted/service_runtime/nacl_copy.h"
+#include "native_client/src/trusted/service_runtime/sel_ldr.h"
+
+static INLINE uintptr_t NaClUserToSysAddrArray(
+    struct NaClApp *nap,
+    uintptr_t uaddr,
+    size_t count,
+    size_t size) {
+  // TODO overflow checking
+  size_t range = count * size;
+  return NaClUserToSysAddrRange(nap, uaddr, range);
+}
+
+void MojoDescDestroy(void *handle) {
+  UNREFERENCED_PARAMETER(handle);
+  NaClLog(LOG_ERROR, "Called destroy...\n");
+}
+
+ssize_t MojoDescSendMsg(void *handle,
+                        const struct NaClImcTypedMsgHdr *msg,
+                        int flags) {
+  UNREFERENCED_PARAMETER(flags);
+
+  struct NaClApp *nap = static_cast<struct NaClApp*>(handle);
+
+  if (msg->iov_length != 1 || msg->iov[0].length < 8 || msg->ndesc_length != 0) {
+    NaClLog(LOG_ERROR, "Malformed message.\n");
+    return -1;
+  }
+
+  uint32_t *params = static_cast<uint32_t*>(msg->iov[0].base);
+  uint32_t numParams = msg->iov[0].length / sizeof(*params);
+
+  uint32_t msgType = params[0];
+  //printf("Message: %d.\n", msgType);
+  switch (msgType) {
+$body
+  default:
+    return -1;
+  }
+
+  return -1;
+}
+
+ssize_t MojoDescRecvMsg(void *handle,
+                           struct NaClImcTypedMsgHdr *msg,
+                           int flags) {
+  UNREFERENCED_PARAMETER(handle);
+  UNREFERENCED_PARAMETER(msg);
+  UNREFERENCED_PARAMETER(flags);
+
+  NaClLog(LOG_FATAL, "MojoDescRecvMsg: Not implemented\n");

[Mark Seaborn, 2014/07/21 16:31:39]

Don't introduce more Chrome-side uses of NaClLog(), please.  Use Chromium's
base/logging.h instead.

[Nick Bray (chromium), 2014/07/21 22:38:36]

sel_ldr.h included for range checks.  sel_ldr includes nacl_log.h.  LOG_*
constant names conflict with base.  Removed logging.

[Mark Seaborn, 2014/07/21 23:25:44]

Right -- that kind of conflict is the reason why you shouldn't be #including
service_runtime headers in the Chromium repo. :-)

+  return 0;
+}
+
+struct NaClDesc *MakeMojoDesc(struct NaClApp *nap) {
+  struct NaClDescCustomFuncs funcs = NACL_DESC_CUSTOM_FUNCS_INITIALIZER;
+  funcs.Destroy = MojoDescDestroy;
+  funcs.SendMsg = MojoDescSendMsg;
+  funcs.RecvMsg = MojoDescRecvMsg;
+  return NaClDescMakeCustomDesc(nap, &funcs);
+}
+
+#define NACL_MOJO_DESC 5
+
+void InjectMojo(struct NaClApp *nap) {
+  NaClAppSetDesc(nap, NACL_MOJO_DESC, MakeMojoDesc(nap));
+}