1 files changed, 65 insertions, 0 deletions
diff --git a/ipc/chromium/src/base/port.h b/ipc/chromium/src/base/port.h
new file mode 100644
index 0000000000..9d78f52cb6
--- /dev/null
+++ b/ipc/chromium/src/base/port.h
@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2006-2008 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.
+
+#ifndef BASE_PORT_H_
+#define BASE_PORT_H_
+
+#include <stdarg.h>
+#include "build/build_config.h"
+
+#ifdef COMPILER_MSVC
+#  define GG_LONGLONG(x) x##I64
+#  define GG_ULONGLONG(x) x##UI64
+#else
+#  define GG_LONGLONG(x) x##LL
+#  define GG_ULONGLONG(x) x##ULL
+#endif
+
+// Per C99 7.8.14, define __STDC_CONSTANT_MACROS before including <stdint.h>
+// to get the INTn_C and UINTn_C macros for integer constants.  It's difficult
+// to guarantee any specific ordering of header includes, so it's difficult to
+// guarantee that the INTn_C macros can be defined by including <stdint.h> at
+// any specific point.  Provide GG_INTn_C macros instead.
+
+#define GG_INT8_C(x) (x)
+#define GG_INT16_C(x) (x)
+#define GG_INT32_C(x) (x)
+#define GG_INT64_C(x) GG_LONGLONG(x)
+
+#define GG_UINT8_C(x) (x##U)
+#define GG_UINT16_C(x) (x##U)
+#define GG_UINT32_C(x) (x##U)
+#define GG_UINT64_C(x) GG_ULONGLONG(x)
+
+namespace base {
+
+// It's possible for functions that use a va_list, such as StringPrintf, to
+// invalidate the data in it upon use.  The fix is to make a copy of the
+// structure before using it and use that copy instead.  va_copy is provided
+// for this purpose.  MSVC does not provide va_copy, so define an
+// implementation here.  It is not guaranteed that assignment is a copy, so the
+// StringUtil.VariableArgsFunc unit test tests this capability.
+
+// The C standard says that va_copy is a "macro", not a function.  Trying to
+// use va_list as ref args to a function, as above, breaks some machines.
+#if defined(COMPILER_GCC)
+#  define base_va_copy(_a, _b) ::va_copy(_a, _b)
+#elif defined(COMPILER_MSVC)
+#  define base_va_copy(_a, _b) (_a = _b)
+#else
+#  error No va_copy for your compiler
+#endif
+
+}  // namespace base
+
+// Define an OS-neutral wrapper for shared library entry points
+#if defined(OS_WIN)
+#  define API_CALL __stdcall
+#elif defined(OS_LINUX) || defined(OS_MACOSX)
+#  define API_CALL
+#endif
+
+#endif  // BASE_PORT_H_