264 lines
8.2 KiB
C++
264 lines
8.2 KiB
C++
/*************************************************************************/
|
|
/* gd_mono_wasm_m2n.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* 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/string/ustring.h"
|
|
#include "core/typedefs.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 <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 constexpr (std::is_same_v<m_type, T>) { \
|
|
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 constexpr (std::is_pointer_v<T>) {
|
|
if constexpr (sizeof(void *) == 4) {
|
|
return 'I';
|
|
} else {
|
|
return 'L';
|
|
}
|
|
}
|
|
|
|
if constexpr (std::is_void_v<T>) {
|
|
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');
|
|
|
|
if constexpr (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;
|
|
return array<size_t, sizeof...(P)>{ calc_m2n_index<P>(int_idx, float_idx)... };
|
|
}
|
|
|
|
constexpr size_t fidx(size_t p_x) {
|
|
if constexpr (sizeof(void *) == 4) {
|
|
return p_x * 2;
|
|
} else {
|
|
return p_x;
|
|
}
|
|
}
|
|
|
|
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');
|
|
|
|
if constexpr (cookie == 'I') {
|
|
return (T)(size_t)p_margs->iargs[p_idx];
|
|
} else if constexpr (cookie == 'L') {
|
|
static_assert(std::is_same_v<T, int64_t> || std::is_same_v<T, uint64_t> ||
|
|
(sizeof(void *) == 8 && std::is_pointer_v<T>),
|
|
"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;
|
|
} else if constexpr (cookie == 'F') {
|
|
return *reinterpret_cast<float *>(&p_margs->fargs[fidx(p_idx)]);
|
|
} else if constexpr (cookie == 'D') {
|
|
return (T)p_margs->fargs[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...>();
|
|
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...>();
|
|
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;
|
|
}
|
|
|
|
inline void m2n_trampoline_with_idx_seq_0(void *p_target_func, Mono_InterpMethodArguments *p_margs) {
|
|
typedef void (*Func)();
|
|
Func func = (Func)p_target_func;
|
|
func();
|
|
}
|
|
|
|
template <typename R>
|
|
void m2n_trampoline_with_idx_seq_r0(void *p_target_func, Mono_InterpMethodArguments *p_margs) {
|
|
typedef R (*Func)();
|
|
Func func = (Func)p_target_func;
|
|
R res = func();
|
|
*reinterpret_cast<R *>(p_margs->retval) = res;
|
|
}
|
|
|
|
template <typename... P>
|
|
void m2n_trampoline(void *p_target_func, Mono_InterpMethodArguments *p_margs) {
|
|
if constexpr (sizeof...(P) == 0) {
|
|
m2n_trampoline_with_idx_seq_0(p_target_func, p_margs);
|
|
} else {
|
|
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) {
|
|
if constexpr (sizeof...(P) == 0) {
|
|
m2n_trampoline_with_idx_seq_r0<R>(p_target_func, p_margs);
|
|
} else {
|
|
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 auto cookies = get_m2n_cookies<P...>();
|
|
|
|
static void add() {
|
|
lazy_initialize();
|
|
set_trampoline(cookies.elems, &m2n_trampoline<P...>);
|
|
}
|
|
};
|
|
|
|
template <typename R, typename... P>
|
|
struct ICallTrampolinesR {
|
|
static constexpr auto cookies = get_m2n_cookies_r<R, P...>();
|
|
|
|
static void add() {
|
|
lazy_initialize();
|
|
set_trampoline(cookies.elems, &m2n_trampoline_r<R, P...>);
|
|
}
|
|
};
|
|
|
|
void initialize();
|
|
} // namespace GDMonoWasmM2n
|
|
|
|
#endif
|
|
|
|
#endif // GD_MONO_WASM_M2N_H
|