mirror of
https://github.com/FEX-Emu/FEX.git
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79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
/*
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$info$
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category: thunklibs ~ These are generated + glue logic 1:1 thunks unless noted otherwise
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$end_info$
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*/
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#pragma once
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#include <stdint.h>
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template<typename Fn>
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struct function_traits;
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template<typename Result, typename Arg>
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struct function_traits<Result(*)(Arg)> {
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using result_t = Result;
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using arg_t = Arg;
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};
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template<auto Fn>
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static typename function_traits<decltype(Fn)>::result_t
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fexfn_type_erased_unpack(void* argsv) {
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using args_t = typename function_traits<decltype(Fn)>::arg_t;
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return Fn(reinterpret_cast<args_t>(argsv));
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}
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struct ExportEntry { uint8_t* sha256; void(*fn)(void *); };
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typedef void fex_call_callback_t(uintptr_t callback, void *arg0, void* arg1);
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/**
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* Opaque wrapper around a guest function pointer.
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*
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* This prevents accidental calls to foreign function pointers while still
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* allowing us to label function pointers as such.
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*/
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struct fex_guest_function_ptr {
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private:
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[[maybe_unused]] void* value = nullptr;
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public:
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fex_guest_function_ptr() = default;
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template<typename Ret, typename... Args>
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fex_guest_function_ptr(Ret (*ptr)(Args...)) : value(reinterpret_cast<void*>(ptr)) {}
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};
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#define EXPORTS(name) \
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extern "C" { \
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ExportEntry* fexthunks_exports_##name() { \
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if (!fexldr_init_##name()) { \
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return nullptr; \
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} \
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return exports; \
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} \
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}
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#define LOAD_LIB_INIT(init_fn) \
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__attribute__((constructor)) static void loadlib() \
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{ \
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init_fn (); \
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}
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struct GuestcallInfo {
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uintptr_t HostPacker;
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void (*CallCallback)(uintptr_t GuestUnpacker, uintptr_t GuestTarget, void* argsrv);
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uintptr_t GuestUnpacker;
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uintptr_t GuestTarget;
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};
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// Helper macro for reading an internal argument passed through the `r11`
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// host register. This macro must be placed at the very beginning of
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// the function it is used in.
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#if defined(_M_X86_64)
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#define LOAD_INTERNAL_GUESTPTR_VIA_CUSTOM_ABI(target_variable) \
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asm volatile("mov %%r11, %0" : "=r" (target_variable))
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#elif defined(_M_ARM_64)
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#define LOAD_INTERNAL_GUESTPTR_VIA_CUSTOM_ABI(target_variable) \
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asm volatile("mov %0, x11" : "=r" (target_variable))
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#endif
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