Interop+Kernel32::ReadFile PInvoke IL stub generated by Crossgen2

PInvoke-cg2.log

 NDirect IL stub dump: ILStubClass::IL_STUB_PInvoke
 incoming managed sig: 00007FFC5AF71DB1: int32 *(class System.Runtime.InteropServices.SafeHandle,uint8*,int32,int32&,native int)
 locals sig:           00000222930A8DC1: (int32,native int,bool,int64,int64,int32& pinned,int64,int32,int32,int32)
 try_begin: 0x0004 try_end: 0x005e finally_begin: 0x0061 finally_end: 0x006e 
 dwStubFlags: 0x00000002
    NDIRECTSTUB_FL_BESTFIT
 jitFlags:
    CORJIT_FLAGS::CORJIT_FLAG_IL_STUB
    CORJIT_FLAGS::CORJIT_FLAG_PUBLISH_SECRET_PARAM
 Initialize {
          ( 0) ldc.i4.0         
          ( 1) stloc.2          
 }
 Marshal {
          ( 0) ldc.i4.0         
          ( 1) stloc.0          
 IL_0004: ( 0) ldarg.0          
          ( 1) ldloca.s        0x2 
          ( 2) call            0x06000001 native int [System.Private.CoreLib] System.StubHelpers.StubHelpers::SafeHandleAddRef(class System.Runtime.InteropServices.SafeHandle,bool&)
          ( 1) stloc.1          
          ( 0) nop             // argument {  
          ( 0) ldarg.1          
          ( 1) stloc.3          
          ( 0) nop             // } argument 
          ( 0) nop             // argument {  
          ( 0) ldarg.2          
          ( 1) conv.i8          
          ( 1) stloc.s         0x4 
          ( 0) nop             // } argument 
          ( 0) nop             // argument {  
          ( 0) ldarg.3          
          ( 1) stloc.s         0x5 
          ( 0) nop             // } argument 
          ( 0) nop             // argument {  
          ( 0) ldarg.s         0x4 
          ( 1) stloc.s         0x6 
          ( 0) nop             // } argument 
          ( 0) nop             // return {  
          ( 0) nop             // } return 
 }
 CallMethod {
          ( 0) ldloc.1          
          ( 1) ldloc.3          
          ( 2) ldloc.s         0x4 
          ( 3) ldloc.s         0x5 
          ( 4) ldloc.s         0x6 
          ( 5) call            0x06000003 void [System.Private.CoreLib] System.StubHelpers.StubHelpers::ClearLastError()
          ( 5) call            0x06000004 native int [System.Private.CoreLib] System.StubHelpers.StubHelpers::GetStubContext()
          ( 6) ldc.i4.s        0x48 
          ( 7) add              
          ( 6) ldind.i          
          ( 6) ldind.i          
          ( 6) calli           0x11ffffff unmanaged stdcall int32(native int,int64,int64,native int,int64)
          ( 1) call            0x06000005 void [System.Private.CoreLib] System.StubHelpers.StubHelpers::SetLastError()
 }
 UnmarshalReturn {
          ( 1) nop             // return {  
          ( 1) stloc.s         0x8 
          ( 0) ldloc.s         0x8 
          ( 1) stloc.s         0x7 
          ( 0) ldloc.s         0x7 
          ( 1) nop             // } return 
          ( 1) stloc.s         0x9 
 }
 Unmarshal {
          ( 0) nop             // argument {  
          ( 0) nop             // } argument 
          ( 0) nop             // argument {  
          ( 0) nop             // } argument 
          ( 0) nop             // argument {  
          ( 0) nop             // } argument 
          ( 0) nop             // argument {  
          ( 0) nop             // } argument 
          ( 0) leave           IL_005e 
 IL_005e: ( 0) ldloc.s         0x9 
          ( 1) ret              
 }
 ExceptionCleanup {
 IL_0061:
 }
 Cleanup {
          ( 0) ldloc.2          
          ( 1) brfalse         IL_006d 
          ( 0) ldarg.0          
          ( 1) call            0x06000002 void [System.Private.CoreLib] System.StubHelpers.StubHelpers::SafeHandleRelease(class System.Runtime.InteropServices.SafeHandle)
 IL_006d: ( 0) endfinally       
 IL_006e:
 }