mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-11 12:00:23 +02:00
Ryan Houdek
673e826e46
FEXCore no longer optimizes syscalls to be inline. NFC, just avoids passing around a bunch of data structures for no reason.
114 lines
3.9 KiB
C++
114 lines
3.9 KiB
C++
// SPDX-License-Identifier: MIT
|
|
/*
|
|
$info$
|
|
tags: LinuxSyscalls|syscalls-x86-32
|
|
$end_info$
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <FEXCore/fextl/memory.h>
|
|
#include <FEXCore/fextl/string.h>
|
|
|
|
#include "LinuxSyscalls/Syscalls.h"
|
|
|
|
#include <memory>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
namespace FEXCore {
|
|
namespace Context {
|
|
class Context;
|
|
}
|
|
namespace Core {
|
|
struct CpuStateFrame;
|
|
}
|
|
} // namespace FEXCore
|
|
|
|
namespace FEX::HLE {
|
|
class SignalDelegator;
|
|
class ThunkHandler;
|
|
} // namespace FEX::HLE
|
|
|
|
namespace FEX::HLE::x32 {
|
|
|
|
class x32SyscallHandler final : public FEX::HLE::SyscallHandler {
|
|
public:
|
|
x32SyscallHandler(FEXCore::Context::Context* ctx, FEX::HLE::SignalDelegator* _SignalDelegation, FEX::HLE::ThunkHandler* ThunkHandler,
|
|
fextl::unique_ptr<MemAllocator> Allocator);
|
|
|
|
FEX::HLE::MemAllocator* GetAllocator() {
|
|
return AllocHandler.get();
|
|
}
|
|
FEX::HLE::MemAllocator* Get32BitAllocator() override {
|
|
return GetAllocator();
|
|
}
|
|
|
|
void* GuestMmap(FEXCore::Core::InternalThreadState* Thread, void* addr, size_t length, int prot, int flags, int fd, off_t offset) override {
|
|
return FEX::HLE::SyscallHandler::GuestMmap(false, Thread, addr, length, prot, flags, fd, offset);
|
|
}
|
|
uint64_t GuestMunmap(FEXCore::Core::InternalThreadState* Thread, void* addr, uint64_t length) override {
|
|
return FEX::HLE::SyscallHandler::GuestMunmap(false, Thread, addr, length);
|
|
}
|
|
|
|
void RegisterSyscall_32(int SyscallNumber,
|
|
#ifdef DEBUG_STRACE
|
|
const fextl::string& TraceFormatString,
|
|
#endif
|
|
void* SyscallHandler, int ArgumentCount) override {
|
|
auto& Def = Definitions.at(SyscallNumber);
|
|
#if defined(ASSERTIONS_ENABLED) && ASSERTIONS_ENABLED
|
|
LOGMAN_THROW_A_FMT(Def.Ptr == reinterpret_cast<void*>(&UnimplementedSyscall), "Oops overwriting sysall problem, {}", SyscallNumber);
|
|
#endif
|
|
Def.Ptr = SyscallHandler;
|
|
Def.NumArgs = ArgumentCount;
|
|
#ifdef DEBUG_STRACE
|
|
Def.StraceFmt = TraceFormatString;
|
|
#endif
|
|
}
|
|
|
|
private:
|
|
void RegisterSyscallHandlers();
|
|
fextl::unique_ptr<MemAllocator> AllocHandler {};
|
|
};
|
|
|
|
fextl::unique_ptr<FEX::HLE::SyscallHandler> CreateHandler(FEXCore::Context::Context* ctx, FEX::HLE::SignalDelegator* _SignalDelegation,
|
|
FEX::HLE::ThunkHandler* ThunkHandler, fextl::unique_ptr<MemAllocator> Allocator);
|
|
//////
|
|
// REGISTER_SYSCALL_IMPL implementation
|
|
// Given a syscall name + a lambda, and it will generate an strace string, extract number of arguments
|
|
// and register it as a syscall handler
|
|
//////
|
|
|
|
// RegisterSyscall base
|
|
// Deduces return, args... from the function passed
|
|
// Does not work with lambas, because they are objects with operator (), not functions
|
|
template<typename R, typename... Args>
|
|
void RegisterSyscall(SyscallHandler* Handler, int SyscallNumber, const char* Name, R (*fn)(FEXCore::Core::CpuStateFrame* Frame, Args...)) {
|
|
#ifdef DEBUG_STRACE
|
|
auto TraceFormatString = fextl::string(Name) + "(" + CollectArgsFmtString<Args...>() + ") = %ld";
|
|
#endif
|
|
Handler->RegisterSyscall_32(SyscallNumber,
|
|
#ifdef DEBUG_STRACE
|
|
TraceFormatString,
|
|
#endif
|
|
reinterpret_cast<void*>(fn), sizeof...(Args));
|
|
}
|
|
|
|
// Generic RegisterSyscall for lambdas
|
|
// Non-capturing lambdas can be cast to function pointers, but this does not happen on argument matching
|
|
// This is some glue logic that will cast a lambda and call the base RegisterSyscall implementation
|
|
template<class F>
|
|
void RegisterSyscall(SyscallHandler* _Handler, int num, const char* name, F f) {
|
|
RegisterSyscall(_Handler, num, name, +f);
|
|
}
|
|
|
|
} // namespace FEX::HLE::x32
|
|
|
|
// Registers syscall for 32bit only
|
|
#define REGISTER_SYSCALL_IMPL_X32(name, lambda) \
|
|
do { \
|
|
FEX::HLE::x32::RegisterSyscall(Handler, x32::SYSCALL_x86_##name, #name, lambda); \
|
|
} while (false)
|