mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-19 04:18:43 +00:00
857 lines
34 KiB
C#
857 lines
34 KiB
C#
using System.Runtime.InteropServices;
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using IL2CPU.API.Attribs;
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namespace Cosmos.Core {
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/// <summary>
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/// INTs (INTerruptS) class.
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/// </summary>
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public class INTs {
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#region Enums
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// TODO: Protect IRQs like memory and ports are
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// TODO: Make IRQs so they are not hookable, and instead release high priority threads like FreeBSD (When we get threading)
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/// <summary>
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/// EFlags Enum.
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/// </summary>
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public enum EFlagsEnum : uint {
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/// <summary>
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/// Set by arithmetic instructions, can be carry or borrow.
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/// </summary>
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Carry = 1,
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/// <summary>
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/// Set by most CPU instructions if the LSB of the destination operand contain an even number of 1's.
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/// </summary>
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Parity = 1 << 2,
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/// <summary>
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/// Set when an arithmetic carry or borrow has been generated out of the four LSBs.
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/// </summary>
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AuxilliaryCarry = 1 << 4,
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/// <summary>
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/// Set to 1 if an arithmetic result is zero, and reset otherwise.
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/// </summary>
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Zero = 1 << 6,
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/// <summary>
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/// Set to 1 if the last arithmetic result was positive, and reset otherwise.
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/// </summary>
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Sign = 1 << 7,
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/// <summary>
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/// When set to 1, permits single step operations.
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/// </summary>
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Trap = 1 << 8,
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/// <summary>
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/// When set to 1, maskable hardware interrupts will be handled, and ignored otherwise.
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/// </summary>
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InterruptEnable = 1 << 9,
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/// <summary>
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/// When set to 1, strings is processed from highest address to lowest, and from lowest to highest otherwise.
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/// </summary>
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Direction = 1 << 10,
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/// <summary>
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/// Set to 1 if arithmetic overflow has occurred in the last operation.
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/// </summary>
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Overflow = 1 << 11,
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/// <summary>
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/// Set to 1 when one system task invoke another by CALL instruction.
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/// </summary>
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NestedTag = 1 << 14,
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/// <summary>
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/// When set to 1, enables the option turn off certain exceptions while debugging.
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/// </summary>
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Resume = 1 << 16,
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/// <summary>
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/// When set to 1, Virtual8086Mode is enabled.
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/// </summary>
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Virtual8086Mode = 1 << 17,
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/// <summary>
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/// When set to 1, enables alignment check.
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/// </summary>
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AlignmentCheck = 1 << 18,
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/// <summary>
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/// When set, the program will receive hardware interrupts.
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/// </summary>
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VirtualInterrupt = 1 << 19,
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/// <summary>
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/// When set, indicate that there is deferred interrupt pending.
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/// </summary>
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VirtualInterruptPending = 1 << 20,
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/// <summary>
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/// When set, indicate that CPUID instruction is available.
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/// </summary>
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ID = 1 << 21
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}
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/// <summary>
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/// TSS (Task State Segment) struct.
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/// </summary>
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[StructLayout(LayoutKind.Explicit, Size = 0x68)]
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public struct TSS {
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(0)]
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public ushort Link;
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[FieldOffset(4)]
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public uint ESP0;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(8)]
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public ushort SS0;
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[FieldOffset(12)]
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public uint ESP1;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(16)]
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public ushort SS1;
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[FieldOffset(20)]
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public uint ESP2;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(24)]
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public ushort SS2;
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[FieldOffset(28)]
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public uint CR3;
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[FieldOffset(32)]
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public uint EIP;
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[FieldOffset(36)]
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public EFlagsEnum EFlags;
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[FieldOffset(40)]
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public uint EAX;
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[FieldOffset(44)]
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public uint ECX;
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[FieldOffset(48)]
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public uint EDX;
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[FieldOffset(52)]
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public uint EBX;
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[FieldOffset(56)]
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public uint ESP;
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[FieldOffset(60)]
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public uint EBP;
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[FieldOffset(64)]
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public uint ESI;
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[FieldOffset(68)]
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public uint EDI;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(72)]
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public ushort ES;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(76)]
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public ushort CS;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(80)]
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public ushort SS;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(84)]
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public ushort DS;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(88)]
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public ushort FS;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(92)]
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public ushort GS;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(96)]
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public ushort LDTR;
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/// <summary>
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/// Reserved.
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/// </summary>
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[FieldOffset(102)]
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public ushort IOPBOffset;
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}
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[StructLayout(LayoutKind.Explicit, Size = 512)]
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public struct MMXContext {
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}
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[StructLayout(LayoutKind.Explicit, Size = 80)]
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public struct IRQContext {
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[FieldOffset(0)]
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public unsafe MMXContext* MMXContext;
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[FieldOffset(4)]
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public uint EDI;
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[FieldOffset(8)]
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public uint ESI;
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[FieldOffset(12)]
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public uint EBP;
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[FieldOffset(16)]
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public uint ESP;
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[FieldOffset(20)]
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public uint EBX;
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[FieldOffset(24)]
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public uint EDX;
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[FieldOffset(28)]
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public uint ECX;
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[FieldOffset(32)]
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public uint EAX;
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[FieldOffset(36)]
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public uint Interrupt;
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[FieldOffset(40)]
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public uint Param;
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[FieldOffset(44)]
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public uint EIP;
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[FieldOffset(48)]
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public uint CS;
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[FieldOffset(52)]
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public EFlagsEnum EFlags;
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[FieldOffset(56)]
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public uint UserESP;
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}
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#endregion
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/// <summary>
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/// Last known address.
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/// </summary>
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[AsmMarker(AsmMarker.Type.Int_LastKnownAddress)]
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private static uint mLastKnownAddress;
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public static uint mStackContext;
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/// <summary>
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/// IRQ handlers.
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/// </summary>
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private static IRQDelegate[] mIRQ_Handlers = new IRQDelegate[256];
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// We used to use:
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//Interrupts.IRQ01 += HandleKeyboardInterrupt;
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// But at one point we had issues with multi cast delegates, so we changed to this single cast option.
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// [1:48:37 PM] Matthijs ter Woord: the issues were: "they didn't work, would crash kernel". not sure if we still have them..
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/// <summary>
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/// Set interrupt handler.
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/// </summary>
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/// <param name="aIntNo">Interrupt index.</param>
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/// <param name="aHandler">IRQ handler.</param>
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public static void SetIntHandler(byte aIntNo, IRQDelegate aHandler) {
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mIRQ_Handlers[aIntNo] = aHandler;
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}
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/// <summary>
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/// Set IRQ handler.
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/// </summary>
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/// <param name="aIrqNo">IRQ index.</param>
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/// <param name="aHandler">IRQ handler.</param>
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public static void SetIrqHandler(byte aIrqNo, IRQDelegate aHandler) {
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SetIntHandler((byte)(0x20 + aIrqNo), aHandler);
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}
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/// <summary>
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/// Set IRQ context to IRQ handler.
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/// </summary>
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/// <param name="irq">IRQ handler index.</param>
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/// <param name="aContext">IRQ context.</param>
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private static void IRQ(uint irq, ref IRQContext aContext) {
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var xCallback = mIRQ_Handlers[irq];
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if (xCallback != null) {
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xCallback(ref aContext);
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}
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}
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/// <summary>
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/// Handle default interrupt.
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/// </summary>
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/// <param name="aContext">A IEQ context.</param>
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public static void HandleInterrupt_Default(ref IRQContext aContext) {
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if (aContext.Interrupt >= 0x20 && aContext.Interrupt <= 0x2F) {
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if (aContext.Interrupt >= 0x28) {
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Global.PIC.EoiSlave();
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} else {
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Global.PIC.EoiMaster();
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}
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}
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}
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/// <summary>
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/// IRQ delegate.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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public delegate void IRQDelegate(ref IRQContext aContext);
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/// <summary>
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/// Exception interrupt delegate.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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/// <param name="aHandled">True if handled.</param>
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public delegate void ExceptionInterruptDelegate(ref IRQContext aContext, ref bool aHandled);
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#region Default Interrupt Handlers
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/// <summary>
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/// IRQ 0 - System timer. Reserved for the system. Cannot be changed by a user.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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public static void HandleInterrupt_20(ref IRQContext aContext) {
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IRQ(0x20, ref aContext);
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Global.PIC.EoiMaster();
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}
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//public static IRQDelegate IRQ01;
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/// <summary>
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/// IRQ 1 - Keyboard. Reserved for the system. Cannot be altered even if no keyboard is present or needed.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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public static void HandleInterrupt_21(ref IRQContext aContext) {
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IRQ(0x21, ref aContext);
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Global.PIC.EoiMaster();
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}
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public static void HandleInterrupt_22(ref IRQContext aContext) {
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IRQ(0x22, ref aContext);
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Global.PIC.EoiMaster();
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}
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public static void HandleInterrupt_23(ref IRQContext aContext) {
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IRQ(0x23, ref aContext);
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Global.PIC.EoiMaster();
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}
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public static void HandleInterrupt_24(ref IRQContext aContext) {
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IRQ(0x24, ref aContext);
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Global.PIC.EoiMaster();
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}
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public static void HandleInterrupt_25(ref IRQContext aContext) {
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IRQ(0x25, ref aContext);
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Global.PIC.EoiMaster();
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}
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public static void HandleInterrupt_26(ref IRQContext aContext) {
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IRQ(0x26, ref aContext);
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Global.PIC.EoiMaster();
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}
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public static void HandleInterrupt_27(ref IRQContext aContext) {
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IRQ(0x27, ref aContext);
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Global.PIC.EoiMaster();
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}
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public static void HandleInterrupt_28(ref IRQContext aContext) {
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IRQ(0x28, ref aContext);
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Global.PIC.EoiSlave();
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}
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/// <summary>
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/// IRQ 09 - (Added for AMD PCNet network card).
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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public static void HandleInterrupt_29(ref IRQContext aContext) {
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IRQ(0x29, ref aContext);
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Global.PIC.EoiSlave();
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}
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/// <summary>
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/// IRQ 10 - (Added for VIA Rhine network card).
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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public static void HandleInterrupt_2A(ref IRQContext aContext) {
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IRQ(0x2A, ref aContext);
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Global.PIC.EoiSlave();
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}
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/// <summary>
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/// IRQ 11 - (Added for RTL8139 network card).
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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public static void HandleInterrupt_2B(ref IRQContext aContext) {
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IRQ(0x2B, ref aContext);
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Global.PIC.EoiSlave();
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}
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public static void HandleInterrupt_2C(ref IRQContext aContext) {
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IRQ(0x2C, ref aContext);
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Global.PIC.EoiSlave();
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}
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public static void HandleInterrupt_2D(ref IRQContext aContext) {
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IRQ(0x2D, ref aContext);
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Global.PIC.EoiSlave();
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}
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/// <summary>
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/// IRQ 14 - Primary IDE. If no Primary IDE this can be changed.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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public static void HandleInterrupt_2E(ref IRQContext aContext) {
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IRQ(0x2E, ref aContext);
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Global.PIC.EoiSlave();
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}
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/// <summary>
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/// IRQ 15 - Secondary IDE.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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public static void HandleInterrupt_2F(ref IRQContext aContext) {
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IRQ(0x2F, ref aContext);
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Global.PIC.EoiSlave();
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}
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public static event IRQDelegate Interrupt30;
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// Interrupt 0x30, enter VMM
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public static void HandleInterrupt_30(ref IRQContext aContext) {
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if (Interrupt30 != null) {
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Interrupt30(ref aContext);
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}
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}
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public static void HandleInterrupt_35(ref IRQContext aContext) {
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aContext.EAX *= 2;
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aContext.EBX *= 2;
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aContext.ECX *= 2;
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aContext.EDX *= 2;
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}
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public static void HandleInterrupt_40(ref IRQContext aContext) {
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IRQ(0x40, ref aContext);
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}
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public static void HandleInterrupt_41(ref IRQContext aContext) {
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IRQ(0x41, ref aContext);
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}
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public static void HandleInterrupt_42(ref IRQContext aContext) {
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IRQ(0x42, ref aContext);
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}
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public static void HandleInterrupt_43(ref IRQContext aContext) {
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IRQ(0x43, ref aContext);
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}
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public static void HandleInterrupt_44(ref IRQContext aContext) {
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IRQ(0x44, ref aContext);
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}
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public static void HandleInterrupt_45(ref IRQContext aContext) {
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IRQ(0x45, ref aContext);
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}
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public static void HandleInterrupt_46(ref IRQContext aContext) {
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IRQ(0x46, ref aContext);
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}
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public static void HandleInterrupt_47(ref IRQContext aContext) {
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IRQ(0x47, ref aContext);
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}
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public static void HandleInterrupt_48(ref IRQContext aContext) {
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IRQ(0x48, ref aContext);
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}
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public static void HandleInterrupt_49(ref IRQContext aContext) {
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IRQ(0x49, ref aContext);
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}
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#endregion
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#region CPU Exceptions
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/// <summary>
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/// General protection fault IRQ delegate.
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/// </summary>
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public static IRQDelegate GeneralProtectionFault;
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/// <summary>
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/// Divide By Zero Exception.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
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/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
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public static void HandleInterrupt_00(ref IRQContext aContext) {
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HandleException(aContext.EIP, "Divide by zero", "EDivideByZero", ref aContext, aContext.EIP);
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}
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/// <summary>
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/// Debug Exception.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
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/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
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public static void HandleInterrupt_01(ref IRQContext aContext) {
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HandleException(aContext.EIP, "Debug Exception", "Debug Exception", ref aContext);
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}
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/// <summary>
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/// Non Maskable Interrupt Exception.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
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/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
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public static void HandleInterrupt_02(ref IRQContext aContext) {
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HandleException(aContext.EIP, "Non Maskable Interrupt Exception", "Non Maskable Interrupt Exception", ref aContext);
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}
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/// <summary>
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/// Breakpoint Exception.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
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/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
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public static void HandleInterrupt_03(ref IRQContext aContext) {
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HandleException(aContext.EIP, "Breakpoint Exception", "Breakpoint Exception", ref aContext);
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}
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/// <summary>
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/// Into Detected Overflow Exception.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
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/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
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public static void HandleInterrupt_04(ref IRQContext aContext) {
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HandleException(aContext.EIP, "Into Detected Overflow Exception", "Into Detected Overflow Exception", ref aContext);
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}
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/// <summary>
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/// Out of Bounds Exception.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
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/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
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public static void HandleInterrupt_05(ref IRQContext aContext) {
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HandleException(aContext.EIP, "Out of Bounds Exception", "Out of Bounds Exception", ref aContext);
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}
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/// <summary>
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/// Invalid Opcode.
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/// </summary>
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/// <param name="aContext">IRQ context.</param>
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/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_06(ref IRQContext aContext) {
|
|
// although mLastKnownAddress is a static, we need to get it here, any subsequent calls will change the value!!!
|
|
var xLastKnownAddress = mLastKnownAddress;
|
|
HandleException(aContext.EIP, "Invalid Opcode", "EInvalidOpcode", ref aContext, xLastKnownAddress);
|
|
}
|
|
|
|
/// <summary>
|
|
/// No Coprocessor Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_07(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "No Coprocessor Exception", "No Coprocessor Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Double Fault Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_08(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "Double Fault Exception", "Double Fault Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Coprocessor Segment Overrun Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_09(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "Coprocessor Segment Overrun Exception", "Coprocessor Segment Overrun Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Bad TSS Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_0A(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "Bad TSS Exception", "Bad TSS Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Segment Not Present.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_0B(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "Segment Not Present", "Segment Not Present", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Stack Fault Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_0C(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "Stack Fault Exception", "Stack Fault Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// General Protection Fault.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_0D(ref IRQContext aContext) {
|
|
if (GeneralProtectionFault != null) {
|
|
GeneralProtectionFault(ref aContext);
|
|
} else {
|
|
HandleException(aContext.EIP, "General Protection Fault", "GPF", ref aContext);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Page Fault Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_0E(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "Page Fault Exception", "Page Fault Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Unknown Interrupt Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_0F(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "Unknown Interrupt Exception", "Unknown Interrupt Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// x87 Floating Point Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_10(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "x87 Floating Point Exception", "Coprocessor Fault Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Alignment Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_11(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "Alignment Exception", "Alignment Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Machine Check Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_12(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "Machine Check Exception", "Machine Check Exception", ref aContext);
|
|
}
|
|
|
|
/// <summary>
|
|
/// SIMD Floating Point Exception.
|
|
/// </summary>
|
|
/// <param name="aContext">IRQ context.</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void HandleInterrupt_13(ref IRQContext aContext) {
|
|
HandleException(aContext.EIP, "SIMD Floating Point Exception", "SIMD Floating Point Exception", ref aContext);
|
|
}
|
|
|
|
|
|
#endregion
|
|
|
|
/// <summary>
|
|
/// Handle exception.
|
|
/// </summary>
|
|
/// <param name="aEIP">Unused.</param>
|
|
/// <param name="aDescription">Unused.</param>
|
|
/// <param name="aName">Unused.</param>
|
|
/// <param name="ctx">IRQ context.</param>
|
|
/// <param name="lastKnownAddressValue">Last known address value. (default = 0)</param>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
private static void HandleException(uint aEIP, string aDescription, string aName, ref IRQContext ctx, uint lastKnownAddressValue = 0) {
|
|
// At this point we are in a very unstable state.
|
|
// Try not to use any Cosmos routines, just
|
|
// report a crash dump.
|
|
const string xHex = "0123456789ABCDEF";
|
|
uint xPtr = ctx.EIP;
|
|
|
|
// we're printing exception info to the screen now:
|
|
// 0/0: x
|
|
// 1/0: exception number in hex
|
|
unsafe
|
|
{
|
|
byte* xAddress = (byte*)0xB8000;
|
|
PutErrorChar(0, 00, ' ');
|
|
PutErrorChar(0, 01, '*');
|
|
PutErrorChar(0, 02, '*');
|
|
PutErrorChar(0, 03, '*');
|
|
PutErrorChar(0, 04, ' ');
|
|
PutErrorChar(0, 05, 'C');
|
|
PutErrorChar(0, 06, 'P');
|
|
PutErrorChar(0, 07, 'U');
|
|
PutErrorChar(0, 08, ' ');
|
|
PutErrorChar(0, 09, 'E');
|
|
PutErrorChar(0, 10, 'x');
|
|
PutErrorChar(0, 11, 'c');
|
|
PutErrorChar(0, 12, 'e');
|
|
PutErrorChar(0, 13, 'p');
|
|
PutErrorChar(0, 14, 't');
|
|
PutErrorChar(0, 15, 'i');
|
|
PutErrorChar(0, 16, 'o');
|
|
PutErrorChar(0, 17, 'n');
|
|
PutErrorChar(0, 18, ' ');
|
|
PutErrorChar(0, 19, 'x');
|
|
PutErrorChar(0, 20, xHex[(int)((ctx.Interrupt >> 4) & 0xF)]);
|
|
PutErrorChar(0, 21, xHex[(int)(ctx.Interrupt & 0xF)]);
|
|
PutErrorChar(0, 22, ' ');
|
|
PutErrorChar(0, 23, '*');
|
|
PutErrorChar(0, 24, '*');
|
|
PutErrorChar(0, 25, '*');
|
|
PutErrorChar(0, 26, ' ');
|
|
|
|
if (lastKnownAddressValue != 0) {
|
|
PutErrorString(1, 0, "Last known address: 0x");
|
|
|
|
PutErrorChar(1, 22, xHex[(int)((lastKnownAddressValue >> 28) & 0xF)]);
|
|
PutErrorChar(1, 23, xHex[(int)((lastKnownAddressValue >> 24) & 0xF)]);
|
|
PutErrorChar(1, 24, xHex[(int)((lastKnownAddressValue >> 20) & 0xF)]);
|
|
PutErrorChar(1, 25, xHex[(int)((lastKnownAddressValue >> 16) & 0xF)]);
|
|
PutErrorChar(1, 26, xHex[(int)((lastKnownAddressValue >> 12) & 0xF)]);
|
|
PutErrorChar(1, 27, xHex[(int)((lastKnownAddressValue >> 8) & 0xF)]);
|
|
PutErrorChar(1, 28, xHex[(int)((lastKnownAddressValue >> 4) & 0xF)]);
|
|
PutErrorChar(1, 29, xHex[(int)(lastKnownAddressValue & 0xF)]);
|
|
}
|
|
|
|
}
|
|
|
|
// lock up
|
|
while (true) {
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Put error char.
|
|
/// </summary>
|
|
/// <param name="line">Line to put the error char at.</param>
|
|
/// <param name="col">Column to put the error char at.</param>
|
|
/// <param name="c">Char to put.</param>
|
|
private static void PutErrorChar(int line, int col, char c) {
|
|
unsafe
|
|
{
|
|
byte* xAddress = (byte*)0xB8000;
|
|
|
|
xAddress += ((line * 80) + col) * 2;
|
|
|
|
xAddress[0] = (byte)c;
|
|
xAddress[1] = 0x0C;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Put error string.
|
|
/// </summary>
|
|
/// <param name="line">Line to put the error string at.</param>
|
|
/// <param name="startCol">Starting column to put the error string at.</param>
|
|
/// <param name="error">Error string to put.</param>
|
|
/// <exception cref="System.OverflowException">Thrown if error length in greater then Int32.MaxValue.</exception>
|
|
private static void PutErrorString(int line, int startCol, string error) {
|
|
for (int i = 0; i < error.Length; i++) {
|
|
PutErrorChar(line, startCol + i, error[i]);
|
|
}
|
|
}
|
|
|
|
// This is to trick IL2CPU to compile it in
|
|
//TODO: Make a new attribute that IL2CPU sees when scanning to force inclusion so we dont have to do this.
|
|
// We dont actually need to call this method
|
|
/// <summary>
|
|
/// Dummy function, used by the bootstrap.
|
|
/// </summary>
|
|
/// <remarks>This is to trick IL2CPU to compile it in.</remarks>
|
|
/// <exception cref="System.IndexOutOfRangeException">Thrown on fatal error, contact support.</exception>
|
|
/// <exception cref="System.OverflowException">Thrown on fatal error, contact support.</exception>
|
|
public static void Dummy() {
|
|
// Compiler magic
|
|
bool xTest = false;
|
|
if (xTest) {
|
|
unsafe
|
|
{
|
|
var xCtx = new IRQContext();
|
|
HandleInterrupt_Default(ref xCtx);
|
|
HandleInterrupt_00(ref xCtx);
|
|
HandleInterrupt_01(ref xCtx);
|
|
HandleInterrupt_02(ref xCtx);
|
|
HandleInterrupt_03(ref xCtx);
|
|
HandleInterrupt_04(ref xCtx);
|
|
HandleInterrupt_05(ref xCtx);
|
|
HandleInterrupt_06(ref xCtx);
|
|
HandleInterrupt_07(ref xCtx);
|
|
HandleInterrupt_08(ref xCtx);
|
|
HandleInterrupt_09(ref xCtx);
|
|
HandleInterrupt_0A(ref xCtx);
|
|
HandleInterrupt_0B(ref xCtx);
|
|
HandleInterrupt_0C(ref xCtx);
|
|
HandleInterrupt_0D(ref xCtx);
|
|
HandleInterrupt_0E(ref xCtx);
|
|
HandleInterrupt_0F(ref xCtx);
|
|
HandleInterrupt_10(ref xCtx);
|
|
HandleInterrupt_11(ref xCtx);
|
|
HandleInterrupt_12(ref xCtx);
|
|
HandleInterrupt_13(ref xCtx);
|
|
HandleInterrupt_20(ref xCtx);
|
|
HandleInterrupt_21(ref xCtx);
|
|
HandleInterrupt_22(ref xCtx);
|
|
HandleInterrupt_23(ref xCtx);
|
|
HandleInterrupt_24(ref xCtx);
|
|
HandleInterrupt_25(ref xCtx);
|
|
HandleInterrupt_26(ref xCtx);
|
|
HandleInterrupt_27(ref xCtx);
|
|
HandleInterrupt_28(ref xCtx);
|
|
HandleInterrupt_29(ref xCtx);
|
|
HandleInterrupt_2A(ref xCtx);
|
|
HandleInterrupt_2B(ref xCtx);
|
|
HandleInterrupt_2C(ref xCtx);
|
|
HandleInterrupt_2D(ref xCtx);
|
|
HandleInterrupt_2E(ref xCtx);
|
|
HandleInterrupt_2F(ref xCtx);
|
|
HandleInterrupt_30(ref xCtx);
|
|
HandleInterrupt_35(ref xCtx);
|
|
HandleInterrupt_40(ref xCtx);
|
|
HandleInterrupt_41(ref xCtx);
|
|
HandleInterrupt_42(ref xCtx);
|
|
HandleInterrupt_43(ref xCtx);
|
|
HandleInterrupt_44(ref xCtx);
|
|
HandleInterrupt_45(ref xCtx);
|
|
HandleInterrupt_46(ref xCtx);
|
|
HandleInterrupt_47(ref xCtx);
|
|
HandleInterrupt_48(ref xCtx);
|
|
HandleInterrupt_49(ref xCtx);
|
|
Processing.ProcessorScheduler.SwitchTask();
|
|
Processing.ProcessorScheduler.EntryPoint();
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|