1426cd3b3a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see". Backported from #70885.
283 lines
8.9 KiB
C++
283 lines
8.9 KiB
C++
/**************************************************************************/
|
|
/* gd_mono_wasm_m2n.h */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/**************************************************************************/
|
|
|
|
#ifndef GD_MONO_WASM_M2N_H
|
|
#define GD_MONO_WASM_M2N_H
|
|
|
|
#ifdef JAVASCRIPT_ENABLED
|
|
|
|
#include "core/typedefs.h"
|
|
#include "core/ustring.h"
|
|
|
|
#include <mono/metadata/loader.h>
|
|
#include <mono/utils/mono-publib.h>
|
|
#include <stdexcept>
|
|
#include <type_traits>
|
|
|
|
extern "C" {
|
|
|
|
struct Mono_InterpMethodArguments {
|
|
size_t ilen;
|
|
void **iargs;
|
|
size_t flen;
|
|
double *fargs;
|
|
void **retval;
|
|
size_t is_float_ret;
|
|
//#ifdef TARGET_WASM
|
|
void *sig;
|
|
//#endif
|
|
};
|
|
} // extern "C"
|
|
|
|
namespace GDMonoWasmM2n {
|
|
|
|
template <size_t... Is>
|
|
struct IndexSequence {};
|
|
|
|
template <size_t N, size_t... Is>
|
|
struct BuildIndexSequence : BuildIndexSequence<N - 1, N - 1, Is...> {};
|
|
|
|
template <size_t... Is>
|
|
struct BuildIndexSequence<0, Is...> : IndexSequence<Is...> {};
|
|
|
|
template <typename T, size_t Size>
|
|
struct array {
|
|
T elems[Size];
|
|
};
|
|
|
|
template <typename T>
|
|
constexpr char get_m2n_cookie_impl() {
|
|
#define M2N_REG_COOKIE(m_type, m_cookie) \
|
|
if (std::is_same<m_type, T>::value) { \
|
|
return m_cookie; \
|
|
}
|
|
|
|
M2N_REG_COOKIE(MonoBoolean, 'I');
|
|
M2N_REG_COOKIE(int8_t, 'I');
|
|
M2N_REG_COOKIE(uint8_t, 'I');
|
|
M2N_REG_COOKIE(int16_t, 'I');
|
|
M2N_REG_COOKIE(uint16_t, 'I');
|
|
M2N_REG_COOKIE(int32_t, 'I');
|
|
M2N_REG_COOKIE(uint32_t, 'I');
|
|
M2N_REG_COOKIE(int64_t, 'L');
|
|
M2N_REG_COOKIE(uint64_t, 'L');
|
|
M2N_REG_COOKIE(float, 'F');
|
|
M2N_REG_COOKIE(double, 'D');
|
|
|
|
if (std::is_pointer<T>::value) {
|
|
if (sizeof(void *) == 4) {
|
|
return 'I';
|
|
} else {
|
|
return 'L';
|
|
}
|
|
}
|
|
|
|
if (std::is_void<T>::value) {
|
|
return 'V';
|
|
}
|
|
|
|
return 'X';
|
|
|
|
#undef M2N_REG_COOKIE
|
|
}
|
|
|
|
template <typename T>
|
|
constexpr char get_m2n_cookie() {
|
|
constexpr char cookie = get_m2n_cookie_impl<T>();
|
|
static_assert(cookie != 'X', "Type not supported in internal call signature.");
|
|
return cookie;
|
|
}
|
|
|
|
template <typename... T>
|
|
constexpr array<const char, sizeof...(T) + 2> get_m2n_cookies() {
|
|
return array<const char, sizeof...(T) + 2>{ 'V', get_m2n_cookie<T>()..., '\0' };
|
|
}
|
|
|
|
template <typename R, typename... T>
|
|
constexpr array<const char, sizeof...(T) + 2> get_m2n_cookies_r() {
|
|
return array<const char, sizeof...(T) + 2>{ get_m2n_cookie<R>(), get_m2n_cookie<T>()..., '\0' };
|
|
}
|
|
|
|
template <typename T>
|
|
constexpr size_t calc_m2n_index(size_t &r_int_idx, size_t &r_float_idx) {
|
|
constexpr char cookie = get_m2n_cookie<T>();
|
|
|
|
static_assert(cookie == 'I' || cookie == 'L' || cookie == 'F' || cookie == 'D', "Cookie should be I, L, F or D.");
|
|
|
|
if (cookie == 'I' || cookie == 'L') {
|
|
size_t ret = r_int_idx;
|
|
r_int_idx += cookie == 'I' ? 1 : 2;
|
|
return ret;
|
|
} else {
|
|
size_t ret = r_float_idx;
|
|
r_float_idx += cookie == 'F' ? 1 : 2;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
template <typename... P>
|
|
constexpr array<size_t, sizeof...(P)> get_indices_for_type() {
|
|
size_t int_idx = 0;
|
|
size_t float_idx = 0;
|
|
(void)int_idx; // Suppress 'unused' warning when parameter count is 0
|
|
(void)float_idx; // Suppress 'unused' warning when parameter count is 0
|
|
return array<size_t, sizeof...(P)>{ calc_m2n_index<P>(int_idx, float_idx)... };
|
|
}
|
|
|
|
constexpr size_t fidx(size_t p_x) {
|
|
if (sizeof(void *) == 4) {
|
|
return p_x * 2;
|
|
} else {
|
|
return p_x;
|
|
}
|
|
}
|
|
|
|
template <typename T, char cookie>
|
|
struct m2n_arg_cast_helper;
|
|
|
|
template <typename T>
|
|
struct m2n_arg_cast_helper<T, 'I'> {
|
|
static T cast(Mono_InterpMethodArguments *p_margs, size_t p_idx) {
|
|
return (T)(size_t)p_margs->iargs[p_idx];
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct m2n_arg_cast_helper<T, 'L'> {
|
|
static T cast(Mono_InterpMethodArguments *p_margs, size_t p_idx) {
|
|
static_assert(std::is_same<T, int64_t>::value || std::is_same<T, uint64_t>::value ||
|
|
(sizeof(void *) == 8 && std::is_pointer<T>::value),
|
|
"Invalid type for cookie 'L'.");
|
|
|
|
union {
|
|
T l;
|
|
struct {
|
|
int32_t lo;
|
|
int32_t hi;
|
|
} pair;
|
|
} p;
|
|
|
|
p.pair.lo = (int32_t)(size_t)p_margs->iargs[p_idx];
|
|
p.pair.hi = (int32_t)(size_t)p_margs->iargs[p_idx + 1];
|
|
|
|
return p.l;
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct m2n_arg_cast_helper<T, 'F'> {
|
|
static T cast(Mono_InterpMethodArguments *p_margs, size_t p_idx) {
|
|
return *reinterpret_cast<float *>(&p_margs->fargs[fidx(p_idx)]);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct m2n_arg_cast_helper<T, 'D'> {
|
|
static T cast(Mono_InterpMethodArguments *p_margs, size_t p_idx) {
|
|
return (T)p_margs->fargs[p_idx];
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
T m2n_arg_cast(Mono_InterpMethodArguments *p_margs, size_t p_idx) {
|
|
constexpr char cookie = get_m2n_cookie<T>();
|
|
|
|
static_assert(cookie == 'I' || cookie == 'L' || cookie == 'F' || cookie == 'D', "Cookie should be I, L, F or D.");
|
|
|
|
return m2n_arg_cast_helper<T, cookie>::cast(p_margs, p_idx);
|
|
}
|
|
|
|
template <typename... P, size_t... Is>
|
|
void m2n_trampoline_with_idx_seq(void *p_target_func, Mono_InterpMethodArguments *p_margs, IndexSequence<Is...>) {
|
|
constexpr array<size_t, sizeof...(P)> indices = get_indices_for_type<P...>();
|
|
(void)indices; // Suppress 'unused' warning when parameter count is 0
|
|
typedef void (*Func)(P...);
|
|
Func func = (Func)p_target_func;
|
|
func(m2n_arg_cast<P>(p_margs, indices.elems[Is])...);
|
|
}
|
|
|
|
template <typename R, typename... P, size_t... Is>
|
|
void m2n_trampoline_with_idx_seq_r(void *p_target_func, Mono_InterpMethodArguments *p_margs, IndexSequence<Is...>) {
|
|
constexpr array<size_t, sizeof...(P)> indices = get_indices_for_type<P...>();
|
|
(void)indices; // Suppress 'unused' warning when parameter count is 0
|
|
typedef R (*Func)(P...);
|
|
Func func = (Func)p_target_func;
|
|
R res = func(m2n_arg_cast<P>(p_margs, indices.elems[Is])...);
|
|
*reinterpret_cast<R *>(p_margs->retval) = res;
|
|
}
|
|
|
|
template <typename... P>
|
|
void m2n_trampoline(void *p_target_func, Mono_InterpMethodArguments *p_margs) {
|
|
m2n_trampoline_with_idx_seq<P...>(p_target_func, p_margs, BuildIndexSequence<sizeof...(P)>{});
|
|
}
|
|
|
|
template <typename R, typename... P>
|
|
void m2n_trampoline_r(void *p_target_func, Mono_InterpMethodArguments *p_margs) {
|
|
m2n_trampoline_with_idx_seq_r<R, P...>(p_target_func, p_margs, BuildIndexSequence<sizeof...(P)>{});
|
|
}
|
|
|
|
typedef void (*TrampolineFunc)(void *p_target_func, Mono_InterpMethodArguments *p_margs);
|
|
|
|
void set_trampoline(const char *cookies, TrampolineFunc trampoline_func);
|
|
|
|
void lazy_initialize();
|
|
|
|
template <typename... P>
|
|
struct ICallTrampolines {
|
|
static constexpr array<const char, sizeof...(P) + 2> cookies = get_m2n_cookies<P...>();
|
|
|
|
static void add() {
|
|
lazy_initialize();
|
|
set_trampoline(cookies.elems, &m2n_trampoline<P...>);
|
|
}
|
|
};
|
|
|
|
template <typename... P>
|
|
constexpr array<const char, sizeof...(P) + 2> ICallTrampolines<P...>::cookies;
|
|
|
|
template <typename R, typename... P>
|
|
struct ICallTrampolinesR {
|
|
static constexpr array<const char, sizeof...(P) + 2> cookies = get_m2n_cookies_r<R, P...>();
|
|
|
|
static void add() {
|
|
lazy_initialize();
|
|
set_trampoline(cookies.elems, &m2n_trampoline_r<R, P...>);
|
|
}
|
|
};
|
|
|
|
template <typename R, typename... P>
|
|
constexpr array<const char, sizeof...(P) + 2> ICallTrampolinesR<R, P...>::cookies;
|
|
|
|
void initialize();
|
|
} // namespace GDMonoWasmM2n
|
|
|
|
#endif
|
|
|
|
#endif // GD_MONO_WASM_M2N_H
|