Solution refactoring and bug fixing

2016-01-04 16:59:05 +01:00
parent 272fb8524f
commit 2c54f1a969
16 changed files with 338 additions and 175 deletions
--- a/bindings/dotnet/UnicornManaged/Binding/IBinding.fs
+++ b/bindings/dotnet/UnicornManaged/Binding/IBinding.fs
@@ -22,7 +22,7 @@ type IBinding =
        abstract MemUnmap : UIntPtr * UInt64 * UIntPtr -> Int32
        abstract MemProtect : UIntPtr * UInt64 * UIntPtr * UInt32 -> Int32
        abstract HookAddNoarg : UIntPtr * UIntPtr * Int32 * UIntPtr * IntPtr -> Int32
-        abstract HookAddArg0 : UIntPtr * UIntPtr * Int32 * UIntPtr * IntPtr * IntPtr -> Int32
+        abstract HookAddArg0 : UIntPtr * UIntPtr * Int32 * UIntPtr * IntPtr * Int32 -> Int32
        abstract HookAddArg0Arg1 : UIntPtr * UIntPtr * Int32 * UIntPtr * IntPtr * UInt64 * UInt64 -> Int32
    end

--- a/bindings/dotnet/UnicornManaged/Binding/NativeBinding.fs
+++ b/bindings/dotnet/UnicornManaged/Binding/NativeBinding.fs
@@ -63,7 +63,7 @@ module NativeBinding =
        extern Int32 uc_hook_add_noarg(UIntPtr eng, UIntPtr hh, Int32 callbackType, UIntPtr callback, IntPtr userData)

        [<DllImport("unicorn", CallingConvention = CallingConvention.Cdecl, EntryPoint = "uc_hook_add")>]
-        extern Int32 uc_hook_add_arg0(UIntPtr eng, UIntPtr hh, Int32 callbackType, UIntPtr callback, IntPtr userData, IntPtr arg0)
+        extern Int32 uc_hook_add_arg0(UIntPtr eng, UIntPtr hh, Int32 callbackType, UIntPtr callback, IntPtr userData, Int32 arg0)

        [<DllImport("unicorn", CallingConvention = CallingConvention.Cdecl, EntryPoint = "uc_hook_add")>]
        extern Int32 uc_hook_add_arg0_arg1(UIntPtr eng, UIntPtr hh, Int32 callbackType, UIntPtr callback, IntPtr userData, UInt64 arg0, UInt64 arg1)
--- a/bindings/dotnet/UnicornManaged/Const/Arm.fs
+++ b/bindings/dotnet/UnicornManaged/Const/Arm.fs
@@ -7,7 +7,7 @@ open System
 [<AutoOpen>]
 module Arm =

-// ARM registers
+    // ARM registers

    let UC_ARM_REG_INVALID = 0
    let UC_ARM_REG_APSR = 1
@@ -122,7 +122,7 @@ module Arm =
    let UC_ARM_REG_S31 = 110
    let UC_ARM_REG_ENDING = 111

-// alias registers
+    // alias registers
    let UC_ARM_REG_R13 = 12
    let UC_ARM_REG_R14 = 10
    let UC_ARM_REG_R15 = 11
--- a/bindings/dotnet/UnicornManaged/Const/Arm64.fs
+++ b/bindings/dotnet/UnicornManaged/Const/Arm64.fs
@@ -7,7 +7,7 @@ open System
 [<AutoOpen>]
 module Arm64 =

-// ARM64 registers
+    // ARM64 registers

    let UC_ARM64_REG_INVALID = 0
    let UC_ARM64_REG_X29 = 1
@@ -270,11 +270,11 @@ module Arm64 =
    let UC_ARM64_REG_V30 = 258
    let UC_ARM64_REG_V31 = 259

-// pseudo registers
+    // pseudo registers
    let UC_ARM64_REG_PC = 260
    let UC_ARM64_REG_ENDING = 261

-// alias registers
+    // alias registers
    let UC_ARM64_REG_IP1 = 215
    let UC_ARM64_REG_IP0 = 216
    let UC_ARM64_REG_FP = 1
--- a/bindings/dotnet/UnicornManaged/Const/M68k.fs
+++ b/bindings/dotnet/UnicornManaged/Const/M68k.fs
@@ -7,7 +7,7 @@ open System
 [<AutoOpen>]
 module M68k =

-// M68K registers
+    // M68K registers

    let UC_M68K_REG_INVALID = 0
    let UC_M68K_REG_A0 = 1
--- a/bindings/dotnet/UnicornManaged/Const/Mips.fs
+++ b/bindings/dotnet/UnicornManaged/Const/Mips.fs
@@ -7,11 +7,11 @@ open System
 [<AutoOpen>]
 module Mips =

-// MIPS registers
+    // MIPS registers

    let UC_MIPS_REG_INVALID = 0

-// General purpose registers
+    // General purpose registers
    let UC_MIPS_REG_PC = 1
    let UC_MIPS_REG_0 = 2
    let UC_MIPS_REG_1 = 3
@@ -46,7 +46,7 @@ module Mips =
    let UC_MIPS_REG_30 = 32
    let UC_MIPS_REG_31 = 33

-// DSP registers
+    // DSP registers
    let UC_MIPS_REG_DSPCCOND = 34
    let UC_MIPS_REG_DSPCARRY = 35
    let UC_MIPS_REG_DSPEFI = 36
@@ -59,13 +59,13 @@ module Mips =
    let UC_MIPS_REG_DSPPOS = 43
    let UC_MIPS_REG_DSPSCOUNT = 44

-// ACC registers
+    // ACC registers
    let UC_MIPS_REG_AC0 = 45
    let UC_MIPS_REG_AC1 = 46
    let UC_MIPS_REG_AC2 = 47
    let UC_MIPS_REG_AC3 = 48

-// COP registers
+    // COP registers
    let UC_MIPS_REG_CC0 = 49
    let UC_MIPS_REG_CC1 = 50
    let UC_MIPS_REG_CC2 = 51
@@ -75,7 +75,7 @@ module Mips =
    let UC_MIPS_REG_CC6 = 55
    let UC_MIPS_REG_CC7 = 56

-// FPU registers
+    // FPU registers
    let UC_MIPS_REG_F0 = 57
    let UC_MIPS_REG_F1 = 58
    let UC_MIPS_REG_F2 = 59
@@ -117,7 +117,7 @@ module Mips =
    let UC_MIPS_REG_FCC6 = 95
    let UC_MIPS_REG_FCC7 = 96

-// AFPR128
+    // AFPR128
    let UC_MIPS_REG_W0 = 97
    let UC_MIPS_REG_W1 = 98
    let UC_MIPS_REG_W2 = 99
--- a/bindings/dotnet/UnicornManaged/Const/Sparc.fs
+++ b/bindings/dotnet/UnicornManaged/Const/Sparc.fs
@@ -7,7 +7,7 @@ open System
 [<AutoOpen>]
 module Sparc =

-// SPARC registers
+    // SPARC registers

    let UC_SPARC_REG_INVALID = 0
    let UC_SPARC_REG_F0 = 1
--- a/bindings/dotnet/UnicornManaged/Const/X86.fs
+++ b/bindings/dotnet/UnicornManaged/Const/X86.fs
@@ -7,7 +7,7 @@ open System
 [<AutoOpen>]
 module X86 =

-// X86 registers
+    // X86 registers

    let UC_X86_REG_INVALID = 0
    let UC_X86_REG_AH = 1
@@ -253,7 +253,7 @@ module X86 =
    let UC_X86_REG_R15W = 241
    let UC_X86_REG_ENDING = 242

-// X86 instructions
+    // X86 instructions

    let UC_X86_INS_INVALID = 0
    let UC_X86_INS_AAA = 1
@@ -378,7 +378,7 @@ module X86 =
    let UC_X86_INS_CVTPS2DQ = 120
    let UC_X86_INS_CVTPS2PD = 121
    let UC_X86_INS_CVTSD2SI = 122
-    (*let UC_X86_INS_CVTSD2SS = 123
+    let UC_X86_INS_CVTSD2SS = 123
    let UC_X86_INS_CVTSI2SD = 124
    let UC_X86_INS_CVTSI2SS = 125
    let UC_X86_INS_CVTSS2SD = 126
@@ -472,9 +472,9 @@ module X86 =
    let UC_X86_INS_HSUBPS = 214
    let UC_X86_INS_IDIV = 215
    let UC_X86_INS_FILD = 216
-    let UC_X86_INS_IMUL = 217*)
+    let UC_X86_INS_IMUL = 217
    let UC_X86_INS_IN = 218
-    (*let UC_X86_INS_INC = 219
+    let UC_X86_INS_INC = 219
    let UC_X86_INS_INSB = 220
    let UC_X86_INS_INSERTPS = 221
    let UC_X86_INS_INSERTQ = 222
@@ -754,9 +754,9 @@ module X86 =
    let UC_X86_INS_MWAIT = 496
    let UC_X86_INS_NEG = 497
    let UC_X86_INS_NOP = 498
-    let UC_X86_INS_NOT = 499*)
+    let UC_X86_INS_NOT = 499
    let UC_X86_INS_OUT = 500
-    (*let UC_X86_INS_OUTSB = 501
+    let UC_X86_INS_OUTSB = 501
    let UC_X86_INS_OUTSD = 502
    let UC_X86_INS_OUTSW = 503
    let UC_X86_INS_PACKUSDW = 504
@@ -953,9 +953,9 @@ module X86 =
    let UC_X86_INS_FSUB = 695
    let UC_X86_INS_FISUB = 696
    let UC_X86_INS_FSUBP = 697
-    let UC_X86_INS_SWAPGS = 698*)
+    let UC_X86_INS_SWAPGS = 698
    let UC_X86_INS_SYSCALL = 699
-    (*let UC_X86_INS_SYSENTER = 700
+    let UC_X86_INS_SYSENTER = 700
    let UC_X86_INS_SYSEXIT = 701
    let UC_X86_INS_SYSRET = 702
    let UC_X86_INS_T1MSKC = 703
@@ -1594,4 +1594,4 @@ module X86 =
    let UC_X86_INS_FDISI8087_NOP = 1336
    let UC_X86_INS_FENI8087_NOP = 1337
    let UC_X86_INS_ENDING = 1338
-    *)
+
--- a/bindings/dotnet/UnicornManaged/ConvertUtility.fs
+++ b/bindings/dotnet/UnicornManaged/ConvertUtility.fs
@@ -0,0 +1,21 @@
+namespace UnicornManaged
+
+open System
+
+[<AutoOpen>]
+module internal ConvertUtility =
+
+    let int64ToBytes(v: Int64) =
+        let res = Array.zeroCreate<Byte> 8
+        let mutable uv = uint64 v
+        for i = 0 to res.Length-1 do
+            res.[i] <- byte (uv &&& uint64 0xFF) 
+            uv <- uv >>> 8
+        res
+
+    let bytesToInt64(v: Byte array) =
+        let mutable res = uint64 0
+        for i = 0 to v.Length-1 do
+            let tmpV = v.[i] &&& byte 0xFF
+            res <- res + (uint64 tmpV <<< (i * 8))
+        int64 res
--- a/bindings/dotnet/UnicornManaged/InternalHooks.fs
+++ b/bindings/dotnet/UnicornManaged/InternalHooks.fs
@@ -20,10 +20,10 @@ type internal MemReadHookInternal = delegate of IntPtr * Int64 * Int32 * IntPtr
 type internal MemWriteHookInternal = delegate of IntPtr * Int64 * Int32 * Int64 * IntPtr -> unit

 [<UnmanagedFunctionPointer(CallingConvention.Cdecl)>]
-type internal EventMemHookInternal = delegate of IntPtr * Int64 * Int32 * Int64 * IntPtr -> unit
+type internal EventMemHookInternal = delegate of IntPtr * Int32 * Int64 * Int32 * Int64 * IntPtr-> Boolean

 [<UnmanagedFunctionPointer(CallingConvention.Cdecl)>]
-type internal InHookInternal = delegate of IntPtr * Int32 * Int32 * IntPtr -> unit
+type internal InHookInternal = delegate of IntPtr * Int32 * Int32 * IntPtr -> Int32

 [<UnmanagedFunctionPointer(CallingConvention.Cdecl)>]
 type internal OutHookInternal = delegate of IntPtr * Int32 * Int32 * Int32 * IntPtr -> unit
--- a/bindings/dotnet/UnicornManaged/Unicorn.fs
+++ b/bindings/dotnet/UnicornManaged/Unicorn.fs
@@ -4,6 +4,7 @@ open System
 open System.Threading
 open System.Collections.Generic
 open System.Runtime.InteropServices
+open System.Linq
 open UnicornManaged.Const
 open UnicornManaged.Binding

@@ -13,8 +14,8 @@ and BlockHook = delegate of Unicorn * Int64 * Int32 * Object -> unit
 and InterruptHook = delegate of Unicorn * Int32 * Object -> unit
 and MemReadHook = delegate of Unicorn * Int64 * Int32 * Object -> unit
 and MemWriteHook = delegate of Unicorn * Int64 * Int32 * Int64 * Object -> unit
-and EventMemHook = delegate of Unicorn * Int64 * Int32 * Int64 * Object -> unit
-and InHook = delegate of Unicorn * Int32 * Int32 * Object -> unit
+and EventMemHook = delegate of Unicorn * Int32 * Int64 * Int32 * Int64 * Object -> Boolean
+and InHook = delegate of Unicorn * Int32 * Int32 * Object -> Int32
 and OutHook = delegate of Unicorn * Int32 * Int32 * Int32 * Object -> unit
 and SyscallHook = delegate of Unicorn * Object -> unit

@@ -22,30 +23,36 @@ and SyscallHook = delegate of Unicorn * Object -> unit
 and Unicorn(arch: Int32, mode: Int32, binding: IBinding) = 

    // hook callback list
-    let _codeHooks = new Dictionary<IntPtr, (CodeHook * Object)>()
-    let _blockHooks = new Dictionary<IntPtr, (BlockHook * Object)>()
-    let _interruptHooks = new Dictionary<IntPtr, (InterruptHook * Object)>()
-    let _memReadHooks = new Dictionary<IntPtr, (MemReadHook * Object)>()
-    let _memWriteHooks = new Dictionary<IntPtr, (MemWriteHook * Object)>()
-    let _memEventHooks = new Dictionary<IntPtr, (EventMemHook * Object)>()
-    let _inHooks = new Dictionary<IntPtr, (InHook * Object)>()
-    let _outHooks = new Dictionary<IntPtr, (OutHook * Object)>()
-    let _syscallHooks = new Dictionary<IntPtr, (SyscallHook * Object)>()
+    let _codeHooks = new List<(CodeHook * Object)>()
+    let _blockHooks = new List<(BlockHook * Object)>()
+    let _interruptHooks = new List<(InterruptHook * Object)>()
+    let _memReadHooks = new List<(MemReadHook * Object)>()
+    let _memWriteHooks = new List<(MemWriteHook * Object)>()
+    let _memEventHooks = new Dictionary<Int32, List<(EventMemHook * Object)>>()
+    let _inHooks = new List<(InHook * Object)>()
+    let _outHooks = new List<(OutHook * Object)>()
+    let _syscallHooks = new List<(SyscallHook * Object)>()
    let _disposablePointers = new List<nativeint>()

+    let _eventMemMap =
+        [
+            (UC_HOOK_MEM_READ_UNMAPPED, UC_MEM_READ_UNMAPPED)
+            (UC_HOOK_MEM_WRITE_UNMAPPED, UC_MEM_WRITE_UNMAPPED)
+            (UC_HOOK_MEM_FETCH_UNMAPPED, UC_MEM_FETCH_UNMAPPED)
+            (UC_HOOK_MEM_READ_PROT, UC_MEM_READ_PROT)
+            (UC_HOOK_MEM_WRITE_PROT, UC_MEM_WRITE_PROT)
+            (UC_HOOK_MEM_FETCH_PROT, UC_MEM_FETCH_PROT)
+        ] |> dict
+        
    let mutable _eng = [|UIntPtr.Zero|]
    
    let checkResult(errCode: Int32, errMsg: String) =
        if errCode <> Common.UC_ERR_OK then raise(ApplicationException(String.Format("{0}. Error: {1}", errMsg, errCode)))
    
-    let getId =
-        let counter = ref 0
-        fun () -> new IntPtr(Interlocked.Increment(counter))
-
-    let hookDel(callbacks: Dictionary<IntPtr, 'a * Object>) (callback: 'a)=
+    let hookDel(callbacks: List<'a * Object>) (callback: 'a)=
        // TODO: invoke the native function in order to not call the trampoline anymore
-        callbacks.Keys
-        |> Seq.tryFind(fun k -> match callbacks.[k] with | (c, _) -> c = callback)
+        callbacks
+        |> Seq.tryFind(fun item -> match item with | (c, _) -> c = callback)
        |> (fun k -> if k.IsSome then callbacks.Remove(k.Value) |> ignore)
       
    let allocate(size: Int32) =
@@ -54,6 +61,12 @@ and Unicorn(arch: Int32, mode: Int32, binding: IBinding) =
        mem.ToPointer()

    do  
+        // initialize event list
+        _eventMemMap
+        |> Seq.map(fun kv -> kv.Key)
+        |> Seq.iter (fun eventType -> _memEventHooks.Add(eventType, new List<EventMemHook * Object>()))
+
+        // init engine
        _eng <- [|new UIntPtr(allocate(IntPtr.Size))|]
        let err = binding.UcOpen(uint32 arch, uint32 mode, _eng)
        checkResult(err, "Unable to open the Unicorn Engine")
@@ -101,10 +114,18 @@ and Unicorn(arch: Int32, mode: Int32, binding: IBinding) =
        match binding.RegWrite(_eng.[0], regId, value) |> this.CheckResult with 
        | Some e -> raise e | None -> ()

+    member this.RegWrite(regId: Int32, value: Int64) =
+        this.RegWrite(regId, int64ToBytes value)
+
    member this.RegRead(regId: Int32, regValue: Byte array) =
        match binding.RegRead(_eng.[0], regId, regValue) |> this.CheckResult with 
        | Some e -> raise e | None -> ()

+    member this.RegRead(regId: Int32) =
+        let buffer = Array.zeroCreate<Byte> 8
+        this.RegRead(regId, buffer)
+        bytesToInt64 buffer
+
    member this.EmuStart(beginAddr: Int64, untilAddr: Int64, timeout: Int64, count: Int64) =
        match binding.EmuStart(_eng.[0], uint64 beginAddr, uint64 untilAddr, uint64 timeout, uint64 count) |> this.CheckResult with 
        | Some e -> raise e | None -> ()
@@ -129,18 +150,18 @@ and Unicorn(arch: Int32, mode: Int32, binding: IBinding) =

    member this.AddCodeHook(callback: CodeHook, userData: Object, beginAddr: Int64, endAddr: Int64) =   
        let trampoline(u: IntPtr) (addr: Int64) (size: Int32) (user: IntPtr) =
-            let (exist, (callback, userData)) = _codeHooks.TryGetValue(user)
-            if exist then callback.Invoke(this, addr, size, userData)
+            _codeHooks
+            |> Seq.iter(fun (callback, userData) -> callback.Invoke(this, addr, size, userData))
        
-        let id = getId()
-        _codeHooks.Add(id, (callback, userData))
+        if _codeHooks |> Seq.isEmpty then
+            let funcPointer = Marshal.GetFunctionPointerForDelegate(new CodeHookInternal(trampoline))        
+            let hh = new UIntPtr(allocate(IntPtr.Size))
+            match binding.HookAddArg0Arg1(_eng.[0], hh, Common.UC_HOOK_CODE, new UIntPtr(funcPointer.ToPointer()), IntPtr.Zero, uint64 beginAddr, uint64 endAddr) |> this.CheckResult with 
+            | Some e -> raise e | None -> ()

-        let funcPointer = Marshal.GetFunctionPointerForDelegate(new CodeHookInternal(trampoline))        
-        let hh = new UIntPtr(allocate(IntPtr.Size))
-        match binding.HookAddArg0Arg1(_eng.[0], hh, Common.UC_HOOK_CODE, new UIntPtr(funcPointer.ToPointer()), id, uint64 beginAddr, uint64 endAddr) |> this.CheckResult with 
-        | Some e -> raise e | None -> ()
+        _codeHooks.Add(callback, userData)

-    member this.AddCodeHook(callback: CodeHook, beginAddr: Int64, endAddr: Int64) =   
+    member this.AddCodeHook(callback: CodeHook, beginAddr: Int64, endAddr: Int64) =
        this.AddCodeHook(callback, null, beginAddr, endAddr)

    member this.HookDel(callback: CodeHook) =
@@ -148,32 +169,32 @@ and Unicorn(arch: Int32, mode: Int32, binding: IBinding) =

    member this.AddBlockHook(callback: BlockHook, userData: Object, beginAddr: Int64, endAddr: Int64) =   
        let trampoline(u: IntPtr) (addr: Int64) (size: Int32) (user: IntPtr) =
-            let (exist, (callback, userData)) = _blockHooks.TryGetValue(user)
-            if exist then callback.Invoke(this, addr, size, userData)
+            _blockHooks
+            |> Seq.iter(fun (callback, userData) -> callback.Invoke(this, addr, size, userData))

-        let id = getId()
-        _blockHooks.Add(id, (callback, userData))
+        if _blockHooks |> Seq.isEmpty then
+            let funcPointer = Marshal.GetFunctionPointerForDelegate(new BlockHookInternal(trampoline))
+            let hh = new UIntPtr(allocate(IntPtr.Size))
+            match binding.HookAddArg0Arg1(_eng.[0], hh, Common.UC_HOOK_BLOCK, new UIntPtr(funcPointer.ToPointer()), IntPtr.Zero, uint64 beginAddr, uint64 endAddr) |> this.CheckResult with 
+            | Some e -> raise e | None -> ()

-        let funcPointer = Marshal.GetFunctionPointerForDelegate(new BlockHookInternal(trampoline))
-        let hh = new UIntPtr(allocate(IntPtr.Size))
-        match binding.HookAddArg0Arg1(_eng.[0], hh, Common.UC_HOOK_BLOCK, new UIntPtr(funcPointer.ToPointer()), id, uint64 beginAddr, uint64 endAddr) |> this.CheckResult with 
-        | Some e -> raise e | None -> ()
+        _blockHooks.Add(callback, userData)

    member this.HookDel(callback: BlockHook) =
        hookDel _blockHooks callback

    member this.AddInterruptHook(callback: InterruptHook, userData: Object) =   
        let trampoline(u: IntPtr) (intNumber: Int32) (user: IntPtr) =
-            let (exist, (callback, userData)) = _interruptHooks.TryGetValue(user)
-            if exist then callback.Invoke(this, intNumber, userData)
+            _interruptHooks
+            |> Seq.iter(fun (callback, userData) -> callback.Invoke(this, intNumber, userData))
+        
+        if _interruptHooks |> Seq.isEmpty then
+            let funcPointer = Marshal.GetFunctionPointerForDelegate(new InterruptHookInternal(trampoline))
+            let hh = new UIntPtr(allocate(IntPtr.Size))
+            match binding.HookAddNoarg(_eng.[0], hh, Common.UC_HOOK_INTR, new UIntPtr(funcPointer.ToPointer()), IntPtr.Zero) |> this.CheckResult with 
+            | Some e -> raise e | None -> ()

-        let id = getId()
-        _interruptHooks.Add(id, (callback, userData))
-
-        let funcPointer = Marshal.GetFunctionPointerForDelegate(new InterruptHookInternal(trampoline))
-        let hh = new UIntPtr(allocate(IntPtr.Size))
-        match binding.HookAddNoarg(_eng.[0], hh, Common.UC_HOOK_INTR, new UIntPtr(funcPointer.ToPointer()), id) |> this.CheckResult with 
-        | Some e -> raise e | None -> ()
+        _interruptHooks.Add(callback, userData)

    member this.AddInterruptHook(callback: InterruptHook) =
        this.AddInterruptHook(callback, null)
@@ -183,104 +204,113 @@ and Unicorn(arch: Int32, mode: Int32, binding: IBinding) =

    member this.AddMemReadHook(callback: MemReadHook, userData: Object, beginAddr: Int64, endAddr: Int64) =   
        let trampoline(u: IntPtr) (addr: Int64) (size: Int32) (user: IntPtr) =
-            let (exist, (callback, userData)) = _memReadHooks.TryGetValue(user)
-            if exist then callback.Invoke(this, addr, size, userData)
+            _memReadHooks
+            |> Seq.iter(fun (callback, userData) -> callback.Invoke(this, addr, size, userData))

-        let id = getId()
-        _memReadHooks.Add(id, (callback, userData))
+        if _memReadHooks |> Seq.isEmpty then
+            let funcPointer = Marshal.GetFunctionPointerForDelegate(new MemReadHookInternal(trampoline))
+            let hh = new UIntPtr(allocate(IntPtr.Size))
+            match binding.HookAddArg0Arg1(_eng.[0], hh, Common.UC_HOOK_MEM_READ, new UIntPtr(funcPointer.ToPointer()), IntPtr.Zero, uint64 beginAddr, uint64 endAddr) |> this.CheckResult with 
+            | Some e -> raise e | None -> ()

-        let funcPointer = Marshal.GetFunctionPointerForDelegate(new MemReadHookInternal(trampoline))
-        let hh = new UIntPtr(allocate(IntPtr.Size))
-        match binding.HookAddArg0Arg1(_eng.[0], hh, Common.UC_HOOK_MEM_READ, new UIntPtr(funcPointer.ToPointer()), id, uint64 beginAddr, uint64 endAddr) |> this.CheckResult with 
-        | Some e -> raise e | None -> ()
+        _memReadHooks.Add(callback, userData)

    member this.HookDel(callback: MemReadHook) =
        hookDel _memReadHooks callback

    member this.AddMemWriteHook(callback: MemWriteHook, userData: Object, beginAddr: Int64, endAddr: Int64) =   
        let trampoline(u: IntPtr) (addr: Int64) (size: Int32) (value: Int64) (user: IntPtr) =
-            let (exist, (callback, userData)) = _memWriteHooks.TryGetValue(user)
-            if exist then callback.Invoke(this, addr, size, value, userData)
+            _memWriteHooks
+            |> Seq.iter(fun (callback, userData) -> callback.Invoke(this, addr, size, value, userData))
+        
+        if _memWriteHooks |> Seq.isEmpty then
+            let funcPointer = Marshal.GetFunctionPointerForDelegate(new MemWriteHookInternal(trampoline))
+            let hh = new UIntPtr(allocate(IntPtr.Size))
+            match binding.HookAddArg0Arg1(_eng.[0], hh, Common.UC_HOOK_MEM_WRITE, new UIntPtr(funcPointer.ToPointer()), IntPtr.Zero, uint64 beginAddr, uint64 endAddr) |> this.CheckResult with 
+            | Some e -> raise e | None -> ()

-        let id = getId()
-        _memWriteHooks.Add(id, (callback, userData))
-
-        let funcPointer = Marshal.GetFunctionPointerForDelegate(new MemWriteHookInternal(trampoline))
-        let hh = new UIntPtr(allocate(IntPtr.Size))
-        match binding.HookAddArg0Arg1(_eng.[0], hh, Common.UC_HOOK_MEM_WRITE, new UIntPtr(funcPointer.ToPointer()), id, uint64 beginAddr, uint64 endAddr) |> this.CheckResult with 
-        | Some e -> raise e | None -> ()
+        _memWriteHooks.Add(callback, userData)

    member this.HookDel(callback: MemWriteHook) =
        hookDel _memWriteHooks callback

    member this.AddEventMemHook(callback: EventMemHook, eventType: Int32, userData: Object) =
-        let trampoline(u: IntPtr) (addr: Int64) (size: Int32) (value: Int64) (user: IntPtr) =
-            let (exist, (callback, userData)) = _memEventHooks.TryGetValue(user)
-            if exist then callback.Invoke(this, addr, size, value, userData)
-
-        let registEventMemHook(check: Int32) =            
-            let id = getId()
-            _memEventHooks.Add(id, (callback, userData))
+        let trampoline(u: IntPtr) (eventType: Int32) (addr: Int64) (size: Int32) (value: Int64) (user: IntPtr) =            
+            _memEventHooks.Keys
+            |> Seq.filter(fun eventFlag -> (eventType &&& eventFlag) <> 0)
+            |> Seq.map(fun eventflag -> _memEventHooks.[eventflag])
+            |> Seq.concat
+            |> Seq.map(fun (callback, userData) -> callback.Invoke(this, eventType, addr, size, value, userData))
+            |> Seq.forall id

+        // register the event if not already done
+        _memEventHooks.Keys
+        |> Seq.filter(fun eventFlag -> (eventType &&& eventFlag) <> 0)
+        |> Seq.filter(fun eventFlag -> _memEventHooks.[eventFlag] |> Seq.isEmpty)
+        |> Seq.iter(fun eventFlag ->
            let funcPointer = Marshal.GetFunctionPointerForDelegate(new EventMemHookInternal(trampoline))
-            let hh = new UIntPtr(allocate(IntPtr.Size))
-            match binding.HookAddNoarg(_eng.[0], hh, check, new UIntPtr(funcPointer.ToPointer()), id) |> this.CheckResult with 
+            let hh = new UIntPtr(allocate(IntPtr.Size))      
+            match binding.HookAddNoarg(_eng.[0], hh, eventFlag, new UIntPtr(funcPointer.ToPointer()), IntPtr.Zero) |> this.CheckResult with 
            | Some e -> raise e | None -> ()
+        )

-        // test all the events types agains the input eventType
-        [
-            Common.UC_HOOK_MEM_READ_UNMAPPED
-            Common.UC_HOOK_MEM_WRITE_UNMAPPED
-            Common.UC_HOOK_MEM_FETCH_UNMAPPED
-            Common.UC_HOOK_MEM_READ_PROT
-            Common.UC_HOOK_MEM_WRITE_PROT
-            Common.UC_HOOK_MEM_FETCH_PROT
-        ] 
-        |> List.filter(fun eventFlag -> eventType &&& eventFlag <> 0)
-        |> List.map registEventMemHook
-        |> List.rev |> List.head
+        // register the callbacks      
+        _memEventHooks.Keys
+        |> Seq.filter(fun eventFlag -> (eventType &&& eventFlag) <> 0)
+        |> Seq.iter(fun eventFlag -> _memEventHooks.[eventFlag].Add((callback, userData)))
+
+    member this.AddEventMemHook(callback: EventMemHook, eventType: Int32) =
+        this.AddEventMemHook(callback, eventType, null)

    member this.HookDel(callback: EventMemHook) =
-        hookDel _memEventHooks callback
+        let callbacks = (_memEventHooks.Values |> Seq.concat).ToList()
+        hookDel callbacks callback

    member this.AddInHook(callback: InHook, userData: Object) =
        let trampoline(u: IntPtr) (port: Int32) (size: Int32) (user: IntPtr) =
-            let (exist, (callback, userData)) = _inHooks.TryGetValue(user)
-            if exist then callback.Invoke(this, port, size, userData)
+            _inHooks
+            |> Seq.map(fun (callback, userData) -> callback.Invoke(this, port, size, userData))
+            |> Seq.last
+        
+        if _inHooks |> Seq.isEmpty then
+            let funcPointer = Marshal.GetFunctionPointerForDelegate(new InHookInternal(trampoline))
+            let hh = new UIntPtr(allocate(IntPtr.Size))
+            match binding.HookAddArg0(_eng.[0], hh, Common.UC_HOOK_INSN, new UIntPtr(funcPointer.ToPointer()), IntPtr.Zero, X86.UC_X86_INS_IN) |> this.CheckResult with 
+            | Some e -> raise e | None -> ()

-        let id = getId()
-        _inHooks.Add(id, (callback, userData))
+        _inHooks.Add(callback, userData)

-        let funcPointer = Marshal.GetFunctionPointerForDelegate(new InHookInternal(trampoline))
-        let hh = new UIntPtr(allocate(IntPtr.Size))
-        match binding.HookAddArg0(_eng.[0], hh, Common.UC_HOOK_INSN, new UIntPtr(funcPointer.ToPointer()), id, new IntPtr(X86.UC_X86_INS_IN)) |> this.CheckResult with 
-        | Some e -> raise e | None -> ()
+    member this.AddInHook(callback: InHook) =
+        this.AddInHook(callback, null)

    member this.AddOutHook(callback: OutHook, userData: Object) =
        let trampoline(u: IntPtr) (port: Int32) (size: Int32) (value: Int32) (user: IntPtr) =
-            let (exist, (callback, userData)) = _outHooks.TryGetValue(user)
-            if exist then callback.Invoke(this, port, size, value, userData)
+            _outHooks
+            |> Seq.iter(fun (callback, userData) -> callback.Invoke(this, port, size, value, userData))
+            
+        if _outHooks |> Seq.isEmpty then
+            let funcPointer = Marshal.GetFunctionPointerForDelegate(new OutHookInternal(trampoline))
+            let hh = new UIntPtr(allocate(IntPtr.Size))
+            match binding.HookAddArg0(_eng.[0], hh, Common.UC_HOOK_INSN, new UIntPtr(funcPointer.ToPointer()), IntPtr.Zero, X86.UC_X86_INS_OUT) |> this.CheckResult with 
+            | Some e -> raise e | None -> ()

-        let id = getId()
-        _outHooks.Add(id, (callback, userData))
+        _outHooks.Add(callback, userData)

-        let funcPointer = Marshal.GetFunctionPointerForDelegate(new OutHookInternal(trampoline))
-        let hh = new UIntPtr(allocate(IntPtr.Size))
-        match binding.HookAddArg0(_eng.[0], hh, Common.UC_HOOK_INSN, new UIntPtr(funcPointer.ToPointer()), id, new IntPtr(X86.UC_X86_INS_OUT)) |> this.CheckResult with 
-        | Some e -> raise e | None -> ()
+    member this.AddOutHook(callback: OutHook) =
+        this.AddOutHook(callback, null)

    member this.AddSyscallHook(callback: SyscallHook, userData: Object) =
        let trampoline(u: IntPtr) (user: IntPtr) =
-            let (exist, (callback, userData)) = _syscallHooks.TryGetValue(user)
-            if exist then callback.Invoke(this, userData)
+            _syscallHooks
+            |> Seq.iter(fun (callback, userData) -> callback.Invoke(this, userData))
+                    
+        if _syscallHooks |> Seq.isEmpty then
+            let funcPointer = Marshal.GetFunctionPointerForDelegate(new SyscallHookInternal(trampoline))
+            let hh = new UIntPtr(allocate(IntPtr.Size))
+            match binding.HookAddArg0(_eng.[0], hh, Common.UC_HOOK_INSN, new UIntPtr(funcPointer.ToPointer()), IntPtr.Zero, X86.UC_X86_INS_SYSCALL) |> this.CheckResult with 
+            | Some e -> raise e | None -> ()

-        let id = getId()
-        _syscallHooks.Add(id, (callback, userData))
-
-        let funcPointer = Marshal.GetFunctionPointerForDelegate(new SyscallHookInternal(trampoline))
-        let hh = new UIntPtr(allocate(IntPtr.Size))
-        match binding.HookAddArg0(_eng.[0], hh, Common.UC_HOOK_INSN, new UIntPtr(funcPointer.ToPointer()), id, new IntPtr(X86.UC_X86_INS_SYSCALL)) |> this.CheckResult with 
-        | Some e -> raise e | None -> ()
+        _syscallHooks.Add(callback, userData)

    member this.AddSyscallHook(callback: SyscallHook) =
        this.AddSyscallHook(callback, null)
--- a/bindings/dotnet/UnicornManaged/UnicornManaged.fsproj
+++ b/bindings/dotnet/UnicornManaged/UnicornManaged.fsproj
@@ -57,7 +57,8 @@
    <Compile Include="Binding\NativeBinding.fs" />
    <Compile Include="Binding\BindingFactory.fs" />
    <Compile Include="UnicornEngineException.fs" />
-    <Compile Include="Hooks.fs" />
+    <Compile Include="InternalHooks.fs" />
+    <Compile Include="ConvertUtility.fs" />
    <Compile Include="Unicorn.fs" />
  </ItemGroup>
  <PropertyGroup>