Mac x86_64: Mach exception support

src/trusted/service_runtime/osx/crash_filter.c

Index: src/trusted/service_runtime/osx/crash_filter.c
===================================================================
--- src/trusted/service_runtime/osx/crash_filter.c	(revision 10826)
+++ src/trusted/service_runtime/osx/crash_filter.c	(working copy)
@@ -1,49 +0,0 @@
-/*
- * Copyright (c) 2011 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.
- */
-
-#include "native_client/src/trusted/service_runtime/osx/crash_filter.h"
-
-#include <mach/mach.h>
-#include <mach/task.h>
-
-#include "native_client/src/include/nacl_macros.h"
-#include "native_client/src/shared/platform/nacl_log.h"
-#include "native_client/src/trusted/service_runtime/sel_rt.h"
-
-
-/*
- * We could provide a version for x86-64, but it would not get tested
- * because we run only minimal tests for x86-64 Mac.  This function is
- * currently only used in Chromium which only uses x86-32 NaCl on Mac.
- */
-#if NACL_ARCH(NACL_BUILD_ARCH) == NACL_x86 && NACL_BUILD_SUBARCH == 32
-
-int NaClMachThreadIsInUntrusted(mach_port_t thread_port) {
-  natural_t regs_array[i386_THREAD_STATE_COUNT];
-  mach_msg_type_number_t size = NACL_ARRAY_SIZE(regs_array);
-  i386_thread_state_t *regs = (i386_thread_state_t *) regs_array;
-  kern_return_t rc;
-  uint16_t global_cs = NaClGetGlobalCs();
-
-  rc = thread_get_state(thread_port, i386_THREAD_STATE, regs_array, &size);
-  if (rc != 0) {
-    NaClLog(LOG_FATAL, "NaClMachThreadIsInUntrusted: "
-            "thread_get_state() failed with error %i\n", (int) rc);
-  }
-
-  /*
-   * If global_cs is 0 (which is not a usable segment selector), the
-   * sandbox has not been initialised yet, so there can be no untrusted
-   * code running.
-   */
-  if (global_cs == 0) {
-    return 0;
-  }
-
-  return regs->__cs != global_cs;
-}
-
-#endif