chrome/app/chrome_main.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/app/chrome_main_delegate.h"
   6
   7 #include "content/public/app/content_main.h"
   8
   9 #if defined(OS_WIN)
  10 #include "base/debug/dump_without_crashing.h"
  11 #include "base/win/win_util.h"
  12 #include "chrome/common/chrome_constants.h"
  13
  14 #define DLLEXPORT __declspec(dllexport)
  15
  16 // We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
  17 extern "C" {
  18 DLLEXPORT int __cdecl ChromeMain(HINSTANCE instance,
  19                                  sandbox::SandboxInterfaceInfo* sandbox_info);
  20 }
  21 #elif defined(OS_POSIX)
  22 extern "C" {
  23 __attribute__((visibility("default")))
  24 int ChromeMain(int argc, const char** argv);
  25 }
  26 #endif
  27
  28 #if defined(OS_WIN)
  29 DLLEXPORT int __cdecl ChromeMain(HINSTANCE instance,
  30                                  sandbox::SandboxInterfaceInfo* sandbox_info) {
  31 #elif defined(OS_POSIX)
  32 int ChromeMain(int argc, const char** argv) {
  33 #endif
  34 #if defined(OS_WIN) && defined(ARCH_CPU_X86_64)
  35   // VS2013 only checks the existence of FMA3 instructions, not the enabled-ness
  36   // of them at the OS level (this is fixed in VS2015). We force off usage of
  37   // FMA3 instructions in the CRT to avoid using that path and hitting illegal
  38   // instructions when running on CPUs that support FMA3, but OSs that don't.
  39   // See http://crbug.com/436603.
  40   _set_FMA3_enable(0);
  41 #endif  // WIN && ARCH_CPU_X86_64
  42
  43   ChromeMainDelegate chrome_main_delegate;
  44   content::ContentMainParams params(&chrome_main_delegate);
  45
  46 #if defined(OS_WIN)
  47   // The process should crash when going through abnormal termination.
  48   base::win::SetShouldCrashOnProcessDetach(true);
  49   base::win::SetAbortBehaviorForCrashReporting();
  50   params.instance = instance;
  51   params.sandbox_info = sandbox_info;
  52
  53   // SetDumpWithoutCrashingFunction must be passed the DumpProcess function
  54   // from the EXE and not from the DLL in order for DumpWithoutCrashing to
  55   // function correctly.
  56   typedef void (__cdecl *DumpProcessFunction)();
  57   DumpProcessFunction DumpProcess = reinterpret_cast<DumpProcessFunction>(
  58       ::GetProcAddress(::GetModuleHandle(chrome::kBrowserProcessExecutableName),
  59           "DumpProcessWithoutCrash"));
  60   base::debug::SetDumpWithoutCrashingFunction(DumpProcess);
  61 #else
  62   params.argc = argc;
  63   params.argv = argv;
  64 #endif
  65
  66   int rv = content::ContentMain(params);
  67
  68 #if defined(OS_WIN)
  69   base::win::SetShouldCrashOnProcessDetach(false);
  70 #endif
  71
  72   return rv;
  73 }