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3 <p>The dynamic code generation interface inside the Mono
4 runtime is similar to the API exposed by
5 System.Reflection.Emit.
7 <p>This interface is used by Mono internally to generate code
8 on the flight in a cross-platform fashion. For example,
9 P/Invoke marshalling in Mono is implemented in terms of this
10 interface, but it is also used in various other parts of the
11 runtime.
13 <p>Unlike Reflection.Emit, the dynamic code generation
14 interface does not start with an assembly builder. The code
15 generation interface starts directly at the method level,
16 which is represented by a pointer to the MonoMethodBuilder
17 structure.
19 <p>To JIT this method, the process is this:
21 <ul>
24 is specified as the first argument.
26 <li>Create the method signature, using
28 takes the number of arguments that the method takes.
29 Then you must initialize the types for each one of the
30 parameters.
32 <li>Emit the CIL code, using one of the
34 helper routines that you can use.
41 using mono_mb_free.
42 </ul>
45 can be called using <tt><a
47 routine or can be passed to any other functions that require
48 the MonoMethod.
50 <p>Example:
52 <pre>
53 MonoMethod *adder ()
54 {
55 MonoMethodBuilder *mb;
56 MonoMethodSignature *sig;
57 MonoMethod *method;
59 mb = mono_mb_new (mono_defaults.object_class, "adder", MONO_WRAPPER_NONE);
61 /* Setup method signature */
62 sig = mono_metadata_signature_alloc (2);
67 /* Emit CIL code */
68 mono_mb_emit_ldarg (mb, 0);
69 mono_mb_emit_ldarg (mb, 1);
70 mono_mb_emit_byte (mb, CEE_ADD);
71 mono_mb_emit_byte (mb, CEE_RET);
73 /* Get the method */
74 method = mono_mb_create_method (mb, sig, max_stack);
76 /* Cleanup */
77 mono_mb-free (mb);
78 return method;
79 }
80 </pre>
86 <pre>
87 MONO_WRAPPER_NONE
88 MONO_WRAPPER_DELEGATE_INVOKE
89 MONO_WRAPPER_DELEGATE_BEGIN_INVOKE
90 MONO_WRAPPER_DELEGATE_END_INVOKE
91 MONO_WRAPPER_RUNTIME_INVOKE
92 MONO_WRAPPER_NATIVE_TO_MANAGED
93 MONO_WRAPPER_MANAGED_TO_NATIVE
94 MONO_WRAPPER_REMOTING_INVOKE
95 MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK
96 MONO_WRAPPER_XDOMAIN_INVOKE
97 MONO_WRAPPER_XDOMAIN_DISPATCH
98 MONO_WRAPPER_LDFLD
99 MONO_WRAPPER_STFLD
100 MONO_WRAPPER_LDFLD_REMOTE
101 MONO_WRAPPER_STFLD_REMOTE
102 MONO_WRAPPER_SYNCHRONIZED
103 MONO_WRAPPER_DYNAMIC_METHOD
104 MONO_WRAPPER_ISINST
105 MONO_WRAPPER_CASTCLASS
106 MONO_WRAPPER_PROXY_ISINST
107 MONO_WRAPPER_STELEMREF
108 MONO_WRAPPER_UNBOX
109 MONO_WRAPPER_LDFLDA
110 MONO_WRAPPER_UNKNOWN
111 </pre>