798 lines
24 KiB
HTML
798 lines
24 KiB
HTML
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</style>
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</head>
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<body>
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<div class="mapi-docs">
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<h2>Internal: Dynamic Code Generation</h2>
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<p />The dynamic code generation interface inside the Mono
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runtime is similar to the API exposed by
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System.Reflection.Emit.
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<p />This interface is used by Mono internally to generate code
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on the flight in a cross-platform fashion. For example,
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P/Invoke marshalling in Mono is implemented in terms of this
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interface, but it is also used in various other parts of the
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runtime.
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<p />Unlike Reflection.Emit, the dynamic code generation
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interface does not start with an assembly builder. The code
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generation interface starts directly at the method level,
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which is represented by a pointer to the MonoMethodBuilder
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structure.
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<p />To JIT this method, the process is this:
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<ul>
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<li>Create a <tt>MonoMethodBuilder</tt> object using
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the <tt>mono_mb_new</tt> method. The method's class
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is specified as the first argument.
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<li>Create the method signature, using
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<tt>mono_metadata_signature_alloc</tt>. The call
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takes the number of arguments that the method takes.
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Then you must initialize the types for each one of the
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parameters.
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<li>Emit the CIL code, using one of the
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<tt>mono_mb_emit_*</tt> functions. There are some
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helper routines that you can use.
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<li>Create the <tt>MonoMethod</tt> from the
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<tt>MethodBuilder</tt> using
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<tt>mono_mb_create_method</tt>.
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<li>Release the <tt>MonoMethodBuilder</tt> resources
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using mono_mb_free.
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</li></li></li></li></li></ul>
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<p />The result of this process is a <tt>MonoMethod</tt> which
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can be called using <tt><a href="api:mono_create_jit_trampoline">mono_create_jit_trampoline</a></tt>
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routine or can be passed to any other functions that require
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the MonoMethod.
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<p />Example:
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<pre>
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MonoMethod *adder ()
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{
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MonoMethodBuilder *mb;
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MonoMethodSignature *sig;
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MonoMethod *method;
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mb = mono_mb_new (mono_defaults.object_class, "adder", MONO_WRAPPER_NONE);
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/* Setup method signature */
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sig = mono_metadata_signature_alloc (2);
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sig->ret = &mono_get_int32_class ()->byval_arg;
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sig->params [0] = &mono_get_int32_class ()->byval_arg;
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sig->params [1] = &mono_defaults.int32_class->byval_arg;
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/* Emit CIL code */
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mono_mb_emit_ldarg (mb, 0);
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mono_mb_emit_ldarg (mb, 1);
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mono_mb_emit_byte (mb, CEE_ADD);
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mono_mb_emit_byte (mb, CEE_RET);
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/* Get the method */
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method = mono_mb_create_method (mb, sig, max_stack);
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/* Cleanup */
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mono_mb-free (mb);
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return method;
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}
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</pre>
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<a name="api:mono_mb_new"></a>
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<div class="mapi">
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<div class="mapi-entry "><code>mono_mb_new</code></div>
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<div class="mapi-height-container">
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<div class="mapi-ptr-container"></div>
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<div class="mapi-description">
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<div class="mapi-ptr"></div>
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">MonoMethodBuilder*
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mono_mb_new (MonoClass *klass, const char *name, MonoWrapperType type)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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<p />The possible values for the <i>type</i> argument are:
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<pre>
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MONO_WRAPPER_NONE
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MONO_WRAPPER_DELEGATE_INVOKE
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MONO_WRAPPER_DELEGATE_BEGIN_INVOKE
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MONO_WRAPPER_DELEGATE_END_INVOKE
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MONO_WRAPPER_RUNTIME_INVOKE
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MONO_WRAPPER_NATIVE_TO_MANAGED
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MONO_WRAPPER_MANAGED_TO_NATIVE
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MONO_WRAPPER_REMOTING_INVOKE
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MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK
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MONO_WRAPPER_XDOMAIN_INVOKE
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MONO_WRAPPER_XDOMAIN_DISPATCH
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MONO_WRAPPER_LDFLD
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MONO_WRAPPER_STFLD
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MONO_WRAPPER_LDFLD_REMOTE
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MONO_WRAPPER_STFLD_REMOTE
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MONO_WRAPPER_SYNCHRONIZED
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MONO_WRAPPER_DYNAMIC_METHOD
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MONO_WRAPPER_ISINST
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MONO_WRAPPER_CASTCLASS
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MONO_WRAPPER_PROXY_ISINST
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MONO_WRAPPER_STELEMREF
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MONO_WRAPPER_UNBOX
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MONO_WRAPPER_LDFLDA
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MONO_WRAPPER_UNKNOWN
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</pre>
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<h3>Emitting IL</h3>
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<p />Functions that can be used to generate IL on the flight,
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similar in spirit to System.Reflection.Emit.ILGenerator.
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</div> <!-- class=mapi -->
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<a name="api:mono_mb_emit_add_to_local"></a>
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<div class="mapi">
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<div class="mapi-entry "><code>mono_mb_emit_add_to_local</code></div>
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<div class="mapi-height-container">
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<div class="mapi-ptr-container"></div>
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<div class="mapi-description">
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<div class="mapi-ptr"></div>
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">void
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mono_mb_emit_add_to_local (MonoMethodBuilder *mb, guint16 local, gint32 incr)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
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<a name="api:mono_mb_emit_branch"></a>
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<div class="mapi">
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<div class="mapi-entry "><code>mono_mb_emit_branch</code></div>
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<div class="mapi-height-container">
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<div class="mapi-ptr-container"></div>
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<div class="mapi-description">
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<div class="mapi-ptr"></div>
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">guint32
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mono_mb_emit_branch (MonoMethodBuilder *mb, guint8 op)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
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<a name="api:mono_mb_emit_byte"></a>
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<div class="mapi">
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<div class="mapi-entry "><code>mono_mb_emit_byte</code></div>
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<div class="mapi-height-container">
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<div class="mapi-ptr-container"></div>
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<div class="mapi-description">
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<div class="mapi-ptr"></div>
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">void
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mono_mb_emit_byte (MonoMethodBuilder *mb, guint8 op)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
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<a name="api:mono_mb_emit_exception"></a>
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<div class="mapi">
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<div class="mapi-entry "><code>mono_mb_emit_exception</code></div>
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<div class="mapi-height-container">
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<div class="mapi-ptr-container"></div>
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<div class="mapi-description">
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<div class="mapi-ptr"></div>
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">void
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mono_mb_emit_exception (MonoMethodBuilder *mb, const char *exc_name, const char *msg)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
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<a name="api:mono_mb_emit_i2"></a>
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<div class="mapi">
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<div class="mapi-entry "><code>mono_mb_emit_i2</code></div>
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<div class="mapi-height-container">
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<div class="mapi-ptr-container"></div>
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<div class="mapi-description">
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<div class="mapi-ptr"></div>
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">void
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mono_mb_emit_i2 (MonoMethodBuilder *mb, gint16 data)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
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<a name="api:mono_mb_emit_i4"></a>
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<div class="mapi">
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<div class="mapi-entry "><code>mono_mb_emit_i4</code></div>
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<div class="mapi-height-container">
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<div class="mapi-ptr-container"></div>
|
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<div class="mapi-description">
|
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<div class="mapi-ptr"></div>
|
|
|
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">void
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mono_mb_emit_i4 (MonoMethodBuilder *mb, gint32 data)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
|
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<a name="api:mono_mb_emit_icon"></a>
|
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<div class="mapi">
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<div class="mapi-entry "><code>mono_mb_emit_icon</code></div>
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<div class="mapi-height-container">
|
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<div class="mapi-ptr-container"></div>
|
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<div class="mapi-description">
|
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<div class="mapi-ptr"></div>
|
|
|
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">void
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mono_mb_emit_icon (MonoMethodBuilder *mb, gint32 value)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
|
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|
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<a name="api:mono_mb_emit_ldarg_addr"></a>
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<div class="mapi">
|
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<div class="mapi-entry "><code>mono_mb_emit_ldarg_addr</code></div>
|
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<div class="mapi-height-container">
|
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<div class="mapi-ptr-container"></div>
|
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<div class="mapi-description">
|
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<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
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<div class="mapi-prototype">void
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mono_mb_emit_ldarg_addr (MonoMethodBuilder *mb, guint argnum)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
|
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|
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<a name="api:mono_mb_emit_ldarg"></a>
|
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<div class="mapi">
|
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<div class="mapi-entry "><code>mono_mb_emit_ldarg</code></div>
|
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<div class="mapi-height-container">
|
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<div class="mapi-ptr-container"></div>
|
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<div class="mapi-description">
|
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<div class="mapi-ptr"></div>
|
|
|
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">void
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mono_mb_emit_ldarg (MonoMethodBuilder *mb, guint argnum)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
|
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|
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<a name="api:mono_mb_emit_ldflda"></a>
|
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<div class="mapi">
|
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<div class="mapi-entry "><code>mono_mb_emit_ldflda</code></div>
|
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<div class="mapi-height-container">
|
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<div class="mapi-ptr-container"></div>
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<div class="mapi-description">
|
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<div class="mapi-ptr"></div>
|
|
|
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<div class="mapi-declaration mapi-section">Syntax</div>
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<div class="mapi-prototype">void
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mono_mb_emit_ldflda (MonoMethodBuilder *mb, gint32 offset)
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</div>
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<p />
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</div><!--mapi-description -->
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</div><!--height container -->
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</div> <!-- class=mapi -->
|
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|
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<a name="api:mono_mb_emit_ldloc_addr"></a>
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<div class="mapi">
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|
<div class="mapi-entry "><code>mono_mb_emit_ldloc_addr</code></div>
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<div class="mapi-height-container">
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<div class="mapi-ptr-container"></div>
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<div class="mapi-description">
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|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">void
|
|
mono_mb_emit_ldloc_addr (MonoMethodBuilder *mb, guint locnum)
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|
|
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</div>
|
|
<p />
|
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</div><!--mapi-description -->
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|
</div><!--height container -->
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|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_emit_ldloc"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_emit_ldloc</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">void
|
|
mono_mb_emit_ldloc (MonoMethodBuilder *mb, guint num)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_emit_ldstr"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_emit_ldstr</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">void
|
|
mono_mb_emit_ldstr (MonoMethodBuilder *mb, char *str)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_emit_managed_call"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_emit_managed_call</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">void
|
|
mono_mb_emit_managed_call (MonoMethodBuilder *mb, MonoMethod *method, MonoMethodSignature *opt_sig)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_emit_native_call"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_emit_native_call</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">void
|
|
mono_mb_emit_native_call (MonoMethodBuilder *mb, MonoMethodSignature *sig, gpointer func)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_emit_stloc"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_emit_stloc</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">void
|
|
mono_mb_emit_stloc (MonoMethodBuilder *mb, guint num)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
|
|
<h3>Local variables and Methods</h3>
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_create_method"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_create_method</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">MonoMethod*
|
|
mono_mb_create_method (MonoMethodBuilder *mb, MonoMethodSignature *signature, int max_stack)
|
|
|
|
</div>
|
|
<p />
|
|
<div class="mapi-section">Return value</div>
|
|
<div> the newly created method.
|
|
</div>
|
|
<div class="mapi-section">Description</div>
|
|
<div>
|
|
Create a <code>MonoMethod</code> from this method builder.</div>
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_add_data"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_add_data</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">guint32
|
|
mono_mb_add_data (MonoMethodBuilder *mb, gpointer data)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_add_local"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_add_local</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">int
|
|
mono_mb_add_local (MonoMethodBuilder *mb, MonoType *type)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_free"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_free</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">void
|
|
mono_mb_free (MonoMethodBuilder *mb)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
|
|
<h3>Patching Addresses</h3>
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_patch_addr"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_patch_addr</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">void
|
|
mono_mb_patch_addr (MonoMethodBuilder *mb, int pos, int value)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_mb_patch_addr_s"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_mb_patch_addr_s</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">void
|
|
mono_mb_patch_addr_s (MonoMethodBuilder *mb, int pos, gint8 value)
|
|
|
|
</div>
|
|
<p />
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
|
|
<h3>Method Signatures</h3>
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_metadata_signature_alloc"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_metadata_signature_alloc</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">MonoMethodSignature*
|
|
mono_metadata_signature_alloc (MonoImage *m, guint32 nparams)
|
|
|
|
</div>
|
|
<p />
|
|
<div class="mapi-section">Parameters</div>
|
|
<table class="mapi-parameters"><tbody><tr><td><i>image</i></td><td> metadata context</td></tr><tr><td><i>nparams</i></td><td> number of parameters in the signature</td></tr></tbody></table> <div class="mapi-section">Return value</div>
|
|
<div> the new <code>MonoMethodSignature</code> structure.
|
|
</div>
|
|
<div class="mapi-section">Description</div>
|
|
<div>
|
|
<p />
|
|
Allocate a <code>MonoMethodSignature</code> structure with the specified number of params.
|
|
The return type and the params types need to be filled later.
|
|
This is a Mono runtime internal function.
|
|
<p />
|
|
LOCKING: Assumes the loader lock is held.
|
|
<p /></div>
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|
|
</div> <!-- class=mapi -->
|
|
|
|
<a name="api:mono_metadata_signature_dup"></a>
|
|
<div class="mapi">
|
|
<div class="mapi-entry "><code>mono_metadata_signature_dup</code></div>
|
|
<div class="mapi-height-container">
|
|
<div class="mapi-ptr-container"></div>
|
|
<div class="mapi-description">
|
|
<div class="mapi-ptr"></div>
|
|
|
|
<div class="mapi-declaration mapi-section">Syntax</div>
|
|
<div class="mapi-prototype">MonoMethodSignature*
|
|
mono_metadata_signature_dup (MonoMethodSignature *sig)
|
|
|
|
</div>
|
|
<p />
|
|
<div class="mapi-section">Parameters</div>
|
|
<table class="mapi-parameters"><tbody><tr><td><i>sig</i></td><td> method signature</td></tr></tbody></table> <div class="mapi-section">Return value</div>
|
|
<div> the new <code>MonoMethodSignature</code> structure.
|
|
</div>
|
|
<div class="mapi-section">Description</div>
|
|
<div>
|
|
<p />
|
|
Duplicate an existing <code>MonoMethodSignature</code> so it can be modified.
|
|
This is a Mono runtime internal function.
|
|
<p /></div>
|
|
</div><!--mapi-description -->
|
|
</div><!--height container -->
|