280 lines
9.9 KiB
Plaintext
280 lines
9.9 KiB
Plaintext
// ==========================================================================
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// This software is subject to the provisions of the Zope Public License,
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// Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
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// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
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// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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// FOR A PARTICULAR PURPOSE.
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// ==========================================================================
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//============================================================================
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// This file is a hand-maintained stub - it implements clr.dll, which can be
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// loaded by a standard CPython interpreter as an extension module. When it
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// is loaded, it bootstraps the managed runtime integration layer and defers
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// to it to do initialization and put the clr module into sys.modules, etc.
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// The "USE_PYTHON_RUNTIME_*" defines control what extra evidence is used
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// to help the CLR find the appropriate Python.Runtime assembly.
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// If defined, the "pythonRuntimeVersionString" variable must be set to
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// Python.Runtime's current version.
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#define USE_PYTHON_RUNTIME_VERSION
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// If defined, the "PythonRuntimePublicKeyTokenData" data array must be
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// set to Python.Runtime's public key token.
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//#define USE_PYTHON_RUNTIME_PUBLIC_KEY_TOKEN
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// If DEBUG_PRINT is defined, a few System.Console.WriteLine calls are made
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// to indicate what's going on during the load...
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//#define DEBUG_PRINT
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//============================================================================
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.assembly extern mscorlib
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{
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.publickeytoken = (B7 7A 5C 56 19 34 E0 89 )
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.ver 2:0:0:0
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}
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.assembly clr
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{
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.hash algorithm 0x00008004
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.ver 2:0:0:2
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}
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.module clr.dll
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.imagebase 0x00400000
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.subsystem 0x00000003
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.file alignment 512
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// This includes the platform-specific IL. The include search path
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// is set depending on whether we're compiling 32 or 64 bit.
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// This MUST come before any other .data directives!
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// Why, oh why, can't ilasm support command line #defines? :(
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// Contributed by VIKAS DHIMAN - Handled by /home/barton/Projects/PyDotNet/pythonnet/makefile
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// gcc -C -P -x c++ -I $(ARCH) clrmodule.pp.il -o clrmodule.il
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// to copy the correct architecture to the clrModule.
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// Nice formating, as well - Thanks, Vikas!
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#include "clrmodule-platform.il"
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#ifdef USE_PYTHON_RUNTIME_PUBLIC_KEY_TOKEN
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.data PythonRuntimePublicKeyTokenData = bytearray (64 e1 4e 84 5a bf 2e 60)
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#endif
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.class public auto ansi beforefieldinit clrModule extends [mscorlib]System.Object
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{
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#ifdef USE_PYTHON_RUNTIME_PUBLIC_KEY_TOKEN
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.field static assembly int64 PythonRuntimePublicKeyToken at PythonRuntimePublicKeyTokenData
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#endif
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.method public hidebysig specialname rtspecialname instance void
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.ctor() cil managed
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{
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.maxstack 1
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ldarg.0
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call instance void [mscorlib]System.Object::.ctor()
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ret
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}
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.method public hidebysig static void modopt([mscorlib]System.Runtime.CompilerServices.CallConvCdecl)
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initclr() cil managed
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{
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.vtentry 1:1
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.export [1] as initclr
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.maxstack 6
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.locals init (
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class [mscorlib]System.Reflection.Assembly pythonRuntime,
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class [mscorlib]System.Reflection.Assembly executingAssembly,
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class [mscorlib]System.Reflection.AssemblyName pythonRuntimeName,
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class [mscorlib]System.Type pythonEngineType,
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int8[] publicKeyToken,
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string assemblyDirectory,
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string pythonRuntimeVersionString,
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string pythonRuntimeDllPath)
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// pythonRuntime = null;
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ldnull
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stloc pythonRuntime
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.try
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{
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#ifdef DEBUG_PRINT
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ldstr "Attempting to load Python.Runtime using standard binding rules... "
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call void [mscorlib]System.Console::Write(string)
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#endif
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// Attempt to find and load Python.Runtime using standard assembly binding rules.
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// This roughly translates into looking in order:
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// - GAC
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// - ApplicationBase
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// - A PrivateBinPath under ApplicationBase
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// With an unsigned assembly, the GAC is skipped.
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// System.Reflection.AssemblyName pythonRuntimeName = new System.Reflection.AssemblyName();
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newobj instance void [mscorlib]System.Reflection.AssemblyName::.ctor()
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stloc pythonRuntimeName
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// pythonRuntimeName.Name = "Python.Runtime";
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ldloc pythonRuntimeName
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ldstr "Python.Runtime"
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callvirt instance void [mscorlib]System.Reflection.AssemblyName::set_Name(string)
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#ifdef USE_PYTHON_RUNTIME_VERSION
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// pythonRuntimeVersionString = "...";
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ldstr "2.0.0.2"
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stloc pythonRuntimeVersionString
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// pythonRuntimeName.Version = new Version(pythonRuntimeVersionString);
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ldloc pythonRuntimeName
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ldloc pythonRuntimeVersionString
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newobj instance void [mscorlib]System.Version::.ctor(string)
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callvirt instance void [mscorlib]System.Reflection.AssemblyName::set_Version(class [mscorlib]System.Version)
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#endif
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#ifdef USE_PYTHON_RUNTIME_PUBLIC_KEY_TOKEN
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// publicKeyToken = new byte[] { ... };
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ldc.i4.8
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newarr [mscorlib]System.Byte
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dup
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ldtoken field int64 clrModule::PythonRuntimePublicKeyToken
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call void [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
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stloc publicKeyToken
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// pythonRuntimeName.SetPublicKeyToken(publicKeyToken);
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ldloc pythonRuntimeName
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ldloc publicKeyToken
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callvirt instance void [mscorlib]System.Reflection.AssemblyName::SetPublicKeyToken(uint8[])
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#endif
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// pythonRuntimeName.CultureInfo = System.Globalization.CultureInfo.InvariantCulture;
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ldloc pythonRuntimeName
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call class [mscorlib]System.Globalization.CultureInfo [mscorlib]System.Globalization.CultureInfo::get_InvariantCulture()
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callvirt instance void [mscorlib]System.Reflection.AssemblyName::set_CultureInfo(class [mscorlib]System.Globalization.CultureInfo)
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// return System.Reflection.Assembly.Load(pythonRuntimeName);
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ldloc pythonRuntimeName
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call class [mscorlib]System.Reflection.Assembly [mscorlib]System.Reflection.Assembly::Load(class [mscorlib]System.Reflection.AssemblyName)
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stloc pythonRuntime
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#ifdef DEBUG_PRINT
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ldstr "Success!"
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call void [mscorlib]System.Console::WriteLine(string)
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#endif
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leave.s LOADED_PYTHON_RUNTIME
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}
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catch [mscorlib]System.Object
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{
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#ifdef DEBUG_PRINT
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ldstr "Failed."
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call void [mscorlib]System.Console::WriteLine(string)
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#endif
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leave.s EXIT_CLR_LOAD
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}
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EXIT_CLR_LOAD: nop
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.try
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{
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// If the above fails for any reason, we fallback to attempting to load "Python.Runtime.dll"
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// from the directory this assembly is running in. "This assembly" is probably "clr.pyd",
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// sitting somewhere in PYTHONPATH. This is using Assembly.LoadFrom, and inherits all the
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// caveats of that call. See MSDN docs for details.
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// Suzanne Cook's blog is also an excellent source of info on this:
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// http://blogs.msdn.com/suzcook/
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// http://blogs.msdn.com/suzcook/archive/2003/05/29/57143.aspx
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// http://blogs.msdn.com/suzcook/archive/2003/06/13/57180.aspx
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// executingAssembly = System.Reflection.Assembly.GetExecutingAssembly();
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call class [mscorlib]System.Reflection.Assembly [mscorlib]System.Reflection.Assembly::GetExecutingAssembly()
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stloc executingAssembly
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// assemblyDirectory = System.IO.Path.GetDirectoryName(executingAssembly.Location);
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ldloc executingAssembly
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callvirt instance string [mscorlib]System.Reflection.Assembly::get_Location()
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call string [mscorlib]System.IO.Path::GetDirectoryName(string)
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stloc assemblyDirectory
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// pythonRuntimeDllPath = System.IO.Path.Combine(assemblyDirectory, "Python.Runtime.dll");
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ldloc assemblyDirectory
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ldstr "Python.Runtime.dll"
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call string [mscorlib]System.IO.Path::Combine(string, string)
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stloc pythonRuntimeDllPath
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#ifdef DEBUG_PRINT
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ldstr "Attempting to load Python.Runtime from: '{0}'... "
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ldloc pythonRuntimeDllPath
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call void [mscorlib]System.Console::Write(string, object)
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#endif
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// pythonRuntime = System.Reflection.Assembly.LoadFrom(pythonRuntimeDllPath);
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ldloc pythonRuntimeDllPath
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call class [mscorlib]System.Reflection.Assembly [mscorlib]System.Reflection.Assembly::LoadFrom(string)
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stloc pythonRuntime
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#ifdef DEBUG_PRINT
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ldstr "Success!"
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call void [mscorlib]System.Console::WriteLine(string)
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#endif
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leave.s LOADED_PYTHON_RUNTIME
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}
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catch [mscorlib]System.Object
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{
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#ifdef DEBUG_PRINT
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ldstr "Failed."
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call void [mscorlib]System.Console::WriteLine(string)
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#endif
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leave.s EXIT_PYTHONPATH_LOAD
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}
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EXIT_PYTHONPATH_LOAD: nop
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// If we get here, we haven't loaded Python.Runtime, so bail.
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#ifdef DEBUG_PRINT
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ldstr "Could not load Python.Runtime, so sad."
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call void [mscorlib]System.Console::WriteLine(string)
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#endif
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ret
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// Once here, we've successfully loaded SOME version of Python.Runtime
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// So now we get the PythonEngine and execute the InitExt method on it.
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LOADED_PYTHON_RUNTIME: nop
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.try
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{
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#ifdef DEBUG_PRINT
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ldstr "Running Python.Runtime.PythonEngine.InitExt()"
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call void [mscorlib]System.Console::WriteLine(string)
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#endif
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// pythonEngineType = pythonRuntime.GetType("Python.Runtime.PythonEngine");
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ldloc pythonRuntime
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ldstr "Python.Runtime.PythonEngine"
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callvirt instance class [mscorlib]System.Type [mscorlib]System.Reflection.Assembly::GetType(string)
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stloc pythonEngineType
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// pythonEngineType.InvokeMember("InitExt", System.Reflection.BindingFlags.InvokeMethod, null, null, null);
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ldloc pythonEngineType
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ldstr "InitExt"
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ldc.i4 0x100
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ldnull
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ldnull
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ldnull
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callvirt instance object [mscorlib]System.Type::InvokeMember( string,
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valuetype [mscorlib]System.Reflection.BindingFlags,
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class [mscorlib]System.Reflection.Binder,
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object,
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object[])
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pop
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leave.s EXIT_TRY_INVOKE
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}
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catch [mscorlib]System.Object
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{
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#ifdef DEBUG_PRINT
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ldstr "Error calling Python.Runtime.PythonEngine.InitExt()."
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call void [mscorlib]System.Console::WriteLine(string)
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#endif
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leave.s EXIT_TRY_INVOKE
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}
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EXIT_TRY_INVOKE: nop
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ret
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}
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}
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