mirror of
https://github.com/mkxp-z/mkxp-z.git
synced 2025-08-23 15:23:44 +02:00
3ba12e5672
In big-endian libretro builds, the WebAssembly memory is reversed, so no byte-swapping is required to read from/write to WebAssembly memory (which is little-endian). However, that means the ways to get and set values in WebAssembly memory are endianness-dependent, so I've added the correct such ways for big-endian platforms.
469 lines
18 KiB
C++
469 lines
18 KiB
C++
/*
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** binding-util.h
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2013 - 2021 Amaryllis Kulla <ancurio@mapleshrine.eu>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 2 of the License, or
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** (at your option) any later version.
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**
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** mkxp is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MKXPZ_SANDBOX_BINDING_UTIL_H
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#define MKXPZ_SANDBOX_BINDING_UTIL_H
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#include <type_traits>
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#include <boost/optional.hpp>
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#include "core.h"
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#include "sandbox.h"
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#define GFX_GUARD_EXC(exp) exp
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#define SANDBOX_SLOT(slot_index) (::mkxp_sandbox::sb()->ref<typename ::mkxp_sandbox::slot_type<(slot_index), slots>::type>(::mkxp_sandbox::sb()->stack_pointer() + ::mkxp_sandbox::slot_offset<(slot_index), slots>::value))
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#define SANDBOX_AWAIT(coroutine, ...) \
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do { \
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{ \
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using namespace ::mkxp_sandbox; \
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if (_sandbox_await<struct coroutine>(__VA_ARGS__)) { \
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break; \
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} \
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} \
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BOOST_ASIO_CORO_YIELD; \
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} while (1)
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#define SANDBOX_AWAIT_R(reference, coroutine, ...) \
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do { \
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{ \
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using namespace ::mkxp_sandbox; \
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typedef std::remove_reference<decltype(reference)>::type _sandbox_await_output_t; \
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boost::optional<_sandbox_await_output_t> _sandbox_await_output = _sandbox_await_r<struct coroutine, _sandbox_await_output_t>(__VA_ARGS__); \
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if (_sandbox_await_output.has_value()) { \
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(reference) = *_sandbox_await_output; \
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break; \
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} \
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} \
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BOOST_ASIO_CORO_YIELD; \
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} while (1)
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#define SANDBOX_AWAIT_S(slot_index, coroutine, ...) SANDBOX_AWAIT_R(SANDBOX_SLOT(slot_index), coroutine, __VA_ARGS__)
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#define SANDBOX_YIELD \
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do { \
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using namespace ::mkxp_sandbox; \
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sb()._begin_yield(); \
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BOOST_ASIO_CORO_YIELD; \
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sb()._end_yield(); \
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} while (0)
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#define SANDBOX_VALUE_TO_BOOL(value) ((value) != SANDBOX_FALSE && (value) != SANDBOX_NIL)
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#define SANDBOX_BOOL_TO_VALUE(boolean) ((boolean) ? SANDBOX_TRUE : SANDBOX_FALSE)
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#define SANDBOX_DEF_ALLOC(rbtype) \
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static VALUE alloc(VALUE _klass) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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typedef decl_slots<VALUE> slots; \
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VALUE operator()(VALUE _klass) { \
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BOOST_ASIO_CORO_REENTER (this) { \
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SANDBOX_AWAIT_S(0, rb_data_typed_object_wrap, _klass, 0, rbtype); \
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} \
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return SANDBOX_SLOT(0); \
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} \
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}; \
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return sb()->bind<struct coro>()()(_klass); \
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}
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#define SANDBOX_DEF_ALLOC_WITH_INIT(rbtype, initializer) \
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static VALUE alloc(VALUE _klass) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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typedef decl_slots<VALUE> slots; \
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VALUE operator()(VALUE _klass) { \
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BOOST_ASIO_CORO_REENTER (this) { \
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SANDBOX_AWAIT_S(0, rb_data_typed_object_wrap, _klass, 0, rbtype); \
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set_private_data(SANDBOX_SLOT(0), initializer); /* TODO: free when sandbox is deallocated */ \
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} \
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return SANDBOX_SLOT(0); \
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} \
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}; \
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return sb()->bind<struct coro>()()(_klass); \
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}
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namespace mkxp_sandbox {
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template <class T> void dfree(wasm_ptr_t buf) {
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delete sb()->ref<T *>(buf);
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sb()->sandbox_free(buf);
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}
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}
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#define SANDBOX_DEF_CLASS_PROP_B(S, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return SANDBOX_BOOL_TO_VALUE(S::get##prop()); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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bool v = SANDBOX_VALUE_TO_BOOL(value); \
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S::set##prop(v); \
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return value; \
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}
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#define SANDBOX_DEF_CLASS_PROP(V, num2val, val2num, S, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct num2val>()()(S::get##prop()); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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VALUE operator()(VALUE self, VALUE value) { \
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typedef decl_slots<V> slots; \
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BOOST_ASIO_CORO_REENTER (this) { \
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SANDBOX_AWAIT_S(0, val2num, value); \
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S::set##prop(SANDBOX_SLOT(0)); \
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} \
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return value; \
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} \
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}; \
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return sb()->bind<struct coro>()()(self, value); \
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}
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#define SANDBOX_DEF_CLASS_PROP_I(S, prop, name) SANDBOX_DEF_CLASS_PROP(int32_t, rb_ll2inum, rb_num2int, S, prop, name)
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#define SANDBOX_DEF_CLASS_PROP_F(S, prop, name) SANDBOX_DEF_CLASS_PROP(float, rb_float_new, rb_num2dbl, S, prop, name)
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#define SANDBOX_DEF_CLASS_PROP_D(S, prop, name) SANDBOX_DEF_CLASS_PROP(double, rb_float_new, rb_num2dbl, S, prop, name)
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#define SANDBOX_DEF_CLASS_PROP_OBJ_REF(S, V, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct rb_iv_get>()()(self, #name); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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VALUE operator()(VALUE self, VALUE value) { \
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BOOST_ASIO_CORO_REENTER (this) { \
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{ \
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V *v = value == SANDBOX_NIL ? nullptr : get_private_data<V>(value); \
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S::set##prop(v); \
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} \
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SANDBOX_AWAIT(rb_iv_set, self, #name, value); \
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} \
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return value; \
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} \
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}; \
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return sb()->bind<struct coro>()()(self, value); \
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}
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#define SANDBOX_DEF_CLASS_PROP_OBJ_VAL(S, V, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct rb_iv_get>()()(self, #name); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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V *v = get_private_data<V>(value); \
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S::set##prop(*v); \
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return value; \
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}
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#define SANDBOX_DEF_PROP_B(S, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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S *s = get_private_data<S>(self); \
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return SANDBOX_BOOL_TO_VALUE(s->get##prop()); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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S *s = get_private_data<S>(self); \
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bool v = SANDBOX_VALUE_TO_BOOL(value); \
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s->set##prop(v); \
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return value; \
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}
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#define SANDBOX_DEF_PROP(V, num2val, val2num, S, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct num2val>()()(get_private_data<S>(self)->get##prop()); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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VALUE operator()(VALUE self, VALUE value) { \
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typedef decl_slots<V> slots; \
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BOOST_ASIO_CORO_REENTER (this) { \
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SANDBOX_AWAIT_S(0, val2num, value); \
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S *s = get_private_data<S>(self); \
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s->set##prop(SANDBOX_SLOT(0)); \
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} \
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return value; \
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} \
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}; \
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return sb()->bind<struct coro>()()(self, value); \
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}
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#define SANDBOX_DEF_PROP_I(S, prop, name) SANDBOX_DEF_PROP(int32_t, rb_ll2inum, rb_num2int, S, prop, name)
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#define SANDBOX_DEF_PROP_F(S, prop, name) SANDBOX_DEF_PROP(float, rb_float_new, rb_num2dbl, S, prop, name)
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#define SANDBOX_DEF_PROP_D(S, prop, name) SANDBOX_DEF_PROP(double, rb_float_new, rb_num2dbl, S, prop, name)
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#define SANDBOX_DEF_PROP_OBJ_REF(S, V, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct rb_iv_get>()()(self, #name); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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VALUE operator()(VALUE self, VALUE value) { \
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BOOST_ASIO_CORO_REENTER (this) { \
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{ \
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S *s = get_private_data<S>(self); \
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V *v = value == SANDBOX_NIL ? nullptr : get_private_data<V>(value); \
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s->set##prop(v); \
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} \
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SANDBOX_AWAIT(rb_iv_set, self, #name, value); \
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} \
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return value; \
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} \
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}; \
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return sb()->bind<struct coro>()()(self, value); \
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}
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#define SANDBOX_DEF_PROP_OBJ_VAL(S, V, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct rb_iv_get>()()(self, #name); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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S *s = get_private_data<S>(self); \
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V *v = get_private_data<V>(value); \
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s->set##prop(*v); \
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return value; \
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}
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#define SANDBOX_DEF_GFX_PROP_B(S, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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S *s = get_private_data<S>(self); \
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return SANDBOX_BOOL_TO_VALUE(s->get##prop()); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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S *s = get_private_data<S>(self); \
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bool v = SANDBOX_VALUE_TO_BOOL(value); \
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GFX_GUARD_EXC(s->set##prop(v);); \
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return value; \
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}
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#define SANDBOX_DEF_GFX_PROP(V, num2val, val2num, S, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct num2val>()()(get_private_data<S>(self)->get##prop()); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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VALUE operator()(VALUE self, VALUE value) { \
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typedef decl_slots<V> slots; \
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BOOST_ASIO_CORO_REENTER (this) { \
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SANDBOX_AWAIT_S(0, val2num, value); \
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S *s = get_private_data<S>(self); \
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GFX_GUARD_EXC(s->set##prop(SANDBOX_SLOT(0));); \
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} \
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return value; \
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} \
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}; \
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return sb()->bind<struct coro>()()(self, value); \
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}
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#define SANDBOX_DEF_GFX_PROP_I(S, prop, name) SANDBOX_DEF_GFX_PROP(int32_t, rb_ll2inum, rb_num2int, S, prop, name)
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#define SANDBOX_DEF_GFX_PROP_F(S, prop, name) SANDBOX_DEF_GFX_PROP(float, rb_float_new, rb_num2dbl, S, prop, name)
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#define SANDBOX_DEF_GFX_PROP_D(S, prop, name) SANDBOX_DEF_GFX_PROP(double, rb_float_new, rb_num2dbl, S, prop, name)
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#define SANDBOX_DEF_GFX_PROP_OBJ_REF(S, V, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct rb_iv_get>()()(self, #name); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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VALUE operator()(VALUE self, VALUE value) { \
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BOOST_ASIO_CORO_REENTER (this) { \
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{ \
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S *s = get_private_data<S>(self); \
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V *v = value == SANDBOX_NIL ? nullptr : get_private_data<V>(value); \
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GFX_GUARD_EXC(s->set##prop(v);); \
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} \
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SANDBOX_AWAIT(rb_iv_set, self, #name, value); \
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} \
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return value; \
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} \
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}; \
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return sb()->bind<struct coro>()()(self, value); \
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}
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#define SANDBOX_DEF_GFX_PROP_OBJ_VAL(S, V, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct rb_iv_get>()()(self, #name); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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S *s = get_private_data<S>(self); \
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V *v = get_private_data<V>(value); \
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GFX_GUARD_EXC(s->set##prop(*v);); \
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return value; \
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}
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#define SANDBOX_DEF_GRA_PROP_B(prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return SANDBOX_BOOL_TO_VALUE(shState->graphics().get##prop()); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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bool v = SANDBOX_VALUE_TO_BOOL(value); \
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GFX_LOCK; \
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shState->graphics().set##prop(v); \
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GFX_UNLOCK; \
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return value; \
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}
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#define SANDBOX_DEF_GRA_PROP(V, num2val, val2num, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct num2val>()()(shState->graphics().get##prop()); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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VALUE operator()(VALUE self, VALUE value) { \
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typedef decl_slots<V> slots; \
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BOOST_ASIO_CORO_REENTER (this) { \
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SANDBOX_AWAIT_S(0, val2num, value); \
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GFX_LOCK; \
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shState->graphics().set##prop(SANDBOX_SLOT(0)); \
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GFX_UNLOCK; \
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} \
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return value; \
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} \
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}; \
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return sb()->bind<struct coro>()()(self, value); \
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}
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#define SANDBOX_DEF_GRA_PROP_I(prop, name) SANDBOX_DEF_GRA_PROP(int32_t, rb_ll2inum, rb_num2int, prop, name)
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#define SANDBOX_DEF_GRA_PROP_F(prop, name) SANDBOX_DEF_GRA_PROP(float, rb_float_new, rb_num2dbl, prop, name)
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#define SANDBOX_DEF_GRA_PROP_D(prop, name) SANDBOX_DEF_GRA_PROP(double, rb_float_new, rb_num2dbl, prop, name)
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#define SANDBOX_DEF_GRA_PROP_OBJ_REF(V, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct rb_iv_get>()()(self, #name); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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struct coro : boost::asio::coroutine { \
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VALUE operator()(VALUE self, VALUE value) { \
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BOOST_ASIO_CORO_REENTER (this) { \
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{ \
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V *v = value == SANDBOX_NIL ? nullptr : get_private_data<V>(value); \
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GFX_LOCK; \
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shState->graphics().set##prop(v); \
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GFX_UNLOCK; \
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} \
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SANDBOX_AWAIT(rb_iv_set, self, #name, value); \
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} \
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return value; \
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} \
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}; \
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return sb()->bind<struct coro>()()(self, value); \
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}
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#define SANDBOX_DEF_GRA_PROP_OBJ_VAL(V, prop, name) \
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static VALUE get_##name(VALUE self) { \
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using namespace ::mkxp_sandbox; \
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return sb()->bind<struct rb_iv_get>()()(self, #name); \
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} \
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static VALUE set_##name(VALUE self, VALUE value) { \
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using namespace ::mkxp_sandbox; \
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V *v = get_private_data<V>(value); \
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GFX_LOCK; \
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shState->graphics().set##prop(*v); \
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GFX_UNLOCK; \
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return value; \
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}
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#define SANDBOX_INIT_FUNC_PROP_BIND(func, target, name) do { \
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SANDBOX_AWAIT(func, target, #name, (VALUE (*)(ANYARGS))get_##name, 0); \
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SANDBOX_AWAIT(func, target, #name "=", (VALUE (*)(ANYARGS))set_##name, 1); \
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} while (0)
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#define SANDBOX_INIT_PROP_BIND(klass, name) SANDBOX_INIT_FUNC_PROP_BIND(rb_define_method, klass, name)
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#define SANDBOX_INIT_SINGLETON_PROP_BIND(klass, name) SANDBOX_INIT_FUNC_PROP_BIND(rb_define_singleton_method, klass, name)
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#define SANDBOX_INIT_MODULE_PROP_BIND(module, name) SANDBOX_INIT_FUNC_PROP_BIND(rb_define_module_function, module, name)
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namespace mkxp_sandbox {
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// We need these helper functions so that the arguments to `SANDBOX_AWAIT`/`SANDBOX_AWAIT_R`/`SANDBOX_AWAIT_S` are evaluated before `sb()->bind` is called instead of after.
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// The reverse happening can lead to incorrect behaviour if one or more of the arguments is using `SANDBOX_SLOT` or other macros that need the state of the sandbox.
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template <typename Coroutine, typename... Args> bool _sandbox_await(Args... args) {
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struct bindings::stack_frame_guard<Coroutine> frame_guard = sb()->bind<Coroutine>();
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frame_guard()(args...);
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return frame_guard().is_complete();
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}
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template <typename Coroutine, typename Output, typename... Args> boost::optional<Output> _sandbox_await_r(Args... args) {
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struct bindings::stack_frame_guard<Coroutine> frame_guard = sb()->bind<Coroutine>();
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Output output = frame_guard()(args...);
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if (frame_guard().is_complete()) {
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return output;
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} else {
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return boost::none;
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}
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}
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// Given Ruby typed data `obj`, stores `ptr` into the private data field of `obj`.
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void set_private_data(VALUE obj, void *ptr);
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// Given Ruby typed data `obj`, retrieves the private data field of `obj`.
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template <typename T> inline T *get_private_data(VALUE obj) {
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return sb()->ref<T *>(sb()->ref<wasm_ptr_t>(sb()->rtypeddata_data(obj)));
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}
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// Gets the length of a Ruby object.
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|
struct get_length : boost::asio::coroutine {
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typedef decl_slots<ID, VALUE, wasm_size_t> slots;
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wasm_size_t operator()(VALUE obj);
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|
};
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// Gets the bytesize of a Ruby object.
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|
struct get_bytesize : boost::asio::coroutine {
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|
typedef decl_slots<ID, VALUE, wasm_size_t> slots;
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|
wasm_size_t operator()(VALUE obj);
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|
};
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|
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struct wrap_property : boost::asio::coroutine {
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|
typedef decl_slots<VALUE> slots;
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|
VALUE operator()(VALUE self, void *ptr, const char *iv, VALUE klass);
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|
};
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// Prints the backtrace of a Ruby exception to the log.
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|
struct log_backtrace : boost::asio::coroutine {
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|
typedef decl_slots<ID, VALUE, VALUE, wasm_ptr_t> slots;
|
|
void operator()(VALUE exception);
|
|
};
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|
}
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#endif // MKXPZ_SANDBOX_BINDING_UTIL_H
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