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using System;
namespace Ryujinx.Cpu
{
/// <summary>
/// CPU context interface.
/// </summary>
public interface ICpuContext : IDisposable
{
/// <summary>
/// Creates a new execution context that will store thread CPU register state when executing guest code.
/// </summary>
/// <param name="exceptionCallbacks">Optional functions to be called when the CPU receives an interrupt</param>
/// <returns>Execution context</returns>
IExecutionContext CreateExecutionContext(ExceptionCallbacks exceptionCallbacks);
/// <summary>
/// Starts executing code at a specified entry point address.
/// </summary>
/// <remarks>
/// This function only returns when the execution is stopped, by calling <see cref="IExecutionContext.StopRunning"/>.
/// </remarks>
/// <param name="context">Execution context to be used for this run</param>
/// <param name="address">Entry point address</param>
void Execute(IExecutionContext context, ulong address);
/// <summary>
/// Invalidates the instruction cache for a given memory region.
/// </summary>
/// <remarks>
/// This should be called if code is modified to make the CPU emulator aware of the modifications,
/// otherwise it might run stale code which will lead to errors and crashes.
/// Calling this function is not necessary if the code memory was modified by guest code,
/// as the expectation is that it will do it on its own using the appropriate cache invalidation instructions,
/// except on Arm32 where those instructions can't be used in unprivileged mode.
/// </remarks>
/// <param name="address">Address of the region to be invalidated</param>
/// <param name="size">Size of the region to be invalidated</param>
void InvalidateCacheRegion(ulong address, ulong size);
/// <summary>
/// Loads cached code from disk for a given application.
/// </summary>
/// <remarks>
/// If the execution engine is recompiling guest code, this can be used to load cached code from disk.
/// </remarks>
/// <param name="titleIdText">Title ID of the application in padded hex form</param>
/// <param name="displayVersion">Version of the application</param>
/// <param name="enabled">True if the cache should be loaded from disk if it exists, false otherwise</param>
/// <returns>Disk cache load progress reporter and manager</returns>
IDiskCacheLoadState LoadDiskCache(string titleIdText, string displayVersion, bool enabled);
/// <summary>
/// Indicates that code has been loaded into guest memory, and that it might be executed in the future.
/// </summary>
/// <remarks>
/// Some execution engines might use this information to cache recompiled code on disk or to ensure it can be executed.
/// </remarks>
/// <param name="address">CPU virtual address where the code starts</param>
/// <param name="size">Size of the code range in bytes</param>
void PrepareCodeRange(ulong address, ulong size);
}
}
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