citra/src/core/hle/hle.cpp

// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.  

#include <vector>

#include "core/mem_map.h"
#include "core/hle/hle.h"
#include "core/hle/syscall.h"
#include "core/hle/service/service.h"

////////////////////////////////////////////////////////////////////////////////////////////////////

namespace HLE {

static std::vector<ModuleDef> g_module_db;

const FunctionDef* GetSyscallInfo(u32 opcode) {
    u32 func_num = opcode & 0xFFFFFF; // 8 bits
    if (func_num > 0xFF) {
        ERROR_LOG(HLE,"Unknown syscall: 0x%02X", func_num); 
        return NULL;
    }
    return &g_module_db[0].func_table[func_num];
}

void CallSyscall(u32 opcode) {
    const FunctionDef *info = GetSyscallInfo(opcode);

    if (!info) {
        return;
    }
    if (info->func) {
        info->func();
    } else {
        ERROR_LOG(HLE, "Unimplemented HLE function %s", info->name);
    }
}

/// Returns the coprocessor (in this case, syscore) command buffer pointer
Addr CallGetThreadCommandBuffer() {
    // Called on insruction: mrc p15, 0, r0, c13, c0, 3
    // Returns an address in OSHLE memory for the CPU to read/write to
    RETURN(OS_THREAD_COMMAND_BUFFER_ADDR);
    return OS_THREAD_COMMAND_BUFFER_ADDR;
}

void RegisterModule(std::string name, int num_functions, const FunctionDef* func_table) {
    ModuleDef module = {name, num_functions, func_table};
    g_module_db.push_back(module);
}

void RegisterAllModules() {
    Syscall::Register();
}

void Init() {
    Service::Init();
    
    RegisterAllModules();

    NOTICE_LOG(HLE, "initialized OK");
}

void Shutdown() {
    g_module_db.clear();
    NOTICE_LOG(HLE, "shutdown OK");
}

} // namespace