/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_recordreplay_CallFunction_h
#define mozilla_recordreplay_CallFunction_h

namespace mozilla {
namespace recordreplay {

// These macros define functions for calling a void* function pointer with
// a particular ABI and arbitrary arguments. In principle we could do this
// with varargs (i.e. cast to 'int (ABI *)(...)' before calling), but MSVC
// treats 'int (__stdcall *)(...)' as 'int (__cdecl *)(...)', unfortunately.
//
// After instantiating DefineAllCallFunctions, the resulting functions will
// be overloaded and have the form, for a given ABI:
//
// template <typename ReturnType>
// ReturnType CallFunctionABI(void* fn);
//
// template <typename ReturnType, typename T0>
// ReturnType CallFunctionABI(void* fn, T0 a0);
//
// template <typename ReturnType, typename T0, typename T1>
// ReturnType CallFunctionABI(void* fn, T0 a0, T1 a1);
//
// And so forth.
#define DefineCallFunction(aABI, aReturnType, aFormals, aFormalTypes,  \
                           aActuals)                                   \
  static inline aReturnType CallFunction##aABI aFormals {              \
    MOZ_ASSERT(aFn);                                                   \
    return BitwiseCast<aReturnType(aABI*) aFormalTypes>(aFn) aActuals; \
  }
#define DefineAllCallFunctions(aABI)                                         \
  template <typename ReturnType>                                             \
  DefineCallFunction(aABI, ReturnType, (void* aFn), (),                      \
                     ()) template <typename ReturnType, typename T0>         \
  DefineCallFunction(                                                        \
      aABI, ReturnType, (void* aFn, T0 a0), (T0),                            \
      (a0)) template <typename ReturnType, typename T0, typename T1>         \
  DefineCallFunction(aABI, ReturnType, (void* aFn, T0 a0, T1 a1), (T0, T1),  \
                     (a0, a1)) template <typename ReturnType, typename T0,   \
                                         typename T1, typename T2>           \
  DefineCallFunction(                                                        \
      aABI, ReturnType, (void* aFn, T0 a0, T1 a1, T2 a2), (T0, T1, T2),      \
      (a0, a1, a2)) template <typename ReturnType, typename T0, typename T1, \
                              typename T2, typename T3>                      \
  DefineCallFunction(                                                        \
      aABI, ReturnType, (void* aFn, T0 a0, T1 a1, T2 a2, T3 a3),             \
      (T0, T1, T2, T3),                                                      \
      (a0, a1, a2,                                                           \
       a3)) template <typename ReturnType, typename T0, typename T1,         \
                      typename T2, typename T3, typename T4>                 \
  DefineCallFunction(                                                        \
      aABI, ReturnType, (void* aFn, T0 a0, T1 a1, T2 a2, T3 a3, T4 a4),      \
      (T0, T1, T2, T3, T4),                                                  \
      (a0, a1, a2, a3,                                                       \
       a4)) template <typename ReturnType, typename T0, typename T1,         \
                      typename T2, typename T3, typename T4, typename T5>    \
  DefineCallFunction(aABI, ReturnType,                                       \
                     (void* aFn, T0 a0, T1 a1, T2 a2, T3 a3, T4 a4, T5 a5),  \
                     (T0, T1, T2, T3, T4, T5),                               \
                     (a0, a1, a2, a3, a4,                                    \
                      a5)) template <typename ReturnType, typename T0,       \
                                     typename T1, typename T2, typename T3,  \
                                     typename T4, typename T5, typename T6>  \
  DefineCallFunction(                                                        \
      aABI, ReturnType,                                                      \
      (void* aFn, T0 a0, T1 a1, T2 a2, T3 a3, T4 a4, T5 a5, T6 a6),          \
      (T0, T1, T2, T3, T4, T5, T6),                                          \
      (a0, a1, a2, a3, a4, a5,                                               \
       a6)) template <typename ReturnType, typename T0, typename T1,         \
                      typename T2, typename T3, typename T4, typename T5,    \
                      typename T6, typename T7>                              \
  DefineCallFunction(                                                        \
      aABI, ReturnType,                                                      \
      (void* aFn, T0 a0, T1 a1, T2 a2, T3 a3, T4 a4, T5 a5, T6 a6, T7 a7),   \
      (T0, T1, T2, T3, T4, T5, T6, T7),                                      \
      (a0, a1, a2, a3, a4, a5, a6,                                           \
       a7)) template <typename ReturnType, typename T0, typename T1,         \
                      typename T2, typename T3, typename T4, typename T5,    \
                      typename T6, typename T7, typename T8>                 \
  DefineCallFunction(                                                        \
      aABI, ReturnType,                                                      \
      (void* aFn, T0 a0, T1 a1, T2 a2, T3 a3, T4 a4, T5 a5, T6 a6, T7 a7,    \
       T8 a8),                                                               \
      (T0, T1, T2, T3, T4, T5, T6, T7, T8),                                  \
      (a0, a1, a2, a3, a4, a5, a6, a7,                                       \
       a8)) template <typename ReturnType, typename T0, typename T1,         \
                      typename T2, typename T3, typename T4, typename T5,    \
                      typename T6, typename T7, typename T8, typename T9>    \
  DefineCallFunction(                                                        \
      aABI, ReturnType,                                                      \
      (void* aFn, T0 a0, T1 a1, T2 a2, T3 a3, T4 a4, T5 a5, T6 a6, T7 a7,    \
       T8 a8, T9 a9),                                                        \
      (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9),                              \
      (a0, a1, a2, a3, a4, a5, a6, a7, a8,                                   \
       a9)) template <typename ReturnType, typename T0, typename T1,         \
                      typename T2, typename T3, typename T4, typename T5,    \
                      typename T6, typename T7, typename T8, typename T9,    \
                      typename T10>                                          \
  DefineCallFunction(                                                        \
      aABI, ReturnType,                                                      \
      (void* aFn, T0 a0, T1 a1, T2 a2, T3 a3, T4 a4, T5 a5, T6 a6, T7 a7,    \
       T8 a8, T9 a9, T10 a10),                                               \
      (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10),                         \
      (a0, a1, a2, a3, a4, a5, a6, a7, a8, a9,                               \
       a10)) template <typename ReturnType, typename T0, typename T1,        \
                       typename T2, typename T3, typename T4, typename T5,   \
                       typename T6, typename T7, typename T8, typename T9,   \
                       typename T10, typename T11>                           \
  DefineCallFunction(aABI, ReturnType,                                       \
                     (void* aFn, T0 a0, T1 a1, T2 a2, T3 a3, T4 a4, T5 a5,   \
                      T6 a6, T7 a7, T8 a8, T9 a9, T10 a10, T11 a11),         \
                     (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11),     \
                     (a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11))

}  // namespace recordreplay
}  // namespace mozilla

#endif  // mozilla_recordreplay_CallFunction_h