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using ARMeilleure.State;
using System;
namespace Ryujinx.Cpu
{
/// <summary>
/// CPU register state interface.
/// </summary>
public interface IExecutionContext : IDisposable
{
/// <summary>
/// Current Program Counter.
/// </summary>
/// <remarks>
/// In some implementations, this value might not be accurate and might not point to the last instruction executed.
/// </remarks>
ulong Pc { get; }
/// <summary>
/// Thread ID Register (EL0).
/// </summary>
long TpidrEl0 { get; set; }
/// <summary>
/// Thread ID Register (read-only) (EL0).
/// </summary>
long TpidrroEl0 { get; set; }
/// <summary>
/// Processor State Register.
/// </summary>
uint Pstate { get; set; }
/// <summary>
/// Floating-point Control Register.
/// </summary>
uint Fpcr { get; set; }
/// <summary>
/// Floating-point Status Register.
/// </summary>
uint Fpsr { get; set; }
/// <summary>
/// Indicates whenever the CPU is running 64-bit (AArch64 mode) or 32-bit (AArch32 mode) code.
/// </summary>
bool IsAarch32 { get; set; }
/// <summary>
/// Indicates whenever the CPU is still running code.
/// </summary>
/// <remarks>
/// Even if this is false, the guest code might be still exiting.
/// One must not assume that the code is no longer running from this property alone.
/// </remarks>
bool Running { get; }
/// <summary>
/// Gets the value of a general purpose register.
/// </summary>
/// <remarks>
/// The special <paramref name="index"/> of 31 can be used to access the SP (Stack Pointer) register.
/// </remarks>
/// <param name="index">Index of the register, in the range 0-31 (inclusive)</param>
/// <returns>The register value</returns>
ulong GetX(int index);
/// <summary>
/// Sets the value of a general purpose register.
/// </summary>
/// <remarks>
/// The special <paramref name="index"/> of 31 can be used to access the SP (Stack Pointer) register.
/// </remarks>
/// <param name="index">Index of the register, in the range 0-31 (inclusive)</param>
/// <param name="value">Value to be set</param>
void SetX(int index, ulong value);
/// <summary>
/// Gets the value of a FP/SIMD register.
/// </summary>
/// <param name="index">Index of the register, in the range 0-31 (inclusive)</param>
/// <returns>The register value</returns>
V128 GetV(int index);
/// <summary>
/// Sets the value of a FP/SIMD register.
/// </summary>
/// <param name="index">Index of the register, in the range 0-31 (inclusive)</param>
/// <param name="value">Value to be set</param>
void SetV(int index, V128 value);
/// <summary>
/// Requests the thread to stop running temporarily and call <see cref="ExceptionCallbacks.InterruptCallback"/>.
/// </summary>
/// <remarks>
/// The thread might not pause immediately.
/// One must not assume that guest code is no longer being executed by the thread after calling this function.
/// </remarks>
void RequestInterrupt();
/// <summary>
/// Requests the thread to stop running guest code and return as soon as possible.
/// </summary>
/// <remarks>
/// The thread might not stop immediately.
/// One must not assume that guest code is no longer being executed by the thread after calling this function.
/// After a thread has been stopped, it can't be restarted with the same <see cref="IExecutionContext"/>.
/// If you only need to pause the thread temporarily, use <see cref="RequestInterrupt"/> instead.
/// </remarks>
void StopRunning();
}
}
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