2 #include <mono/io-layer/io-layer.h>
3 #include <mono/metadata/threads.h>
4 #include <mono/metadata/assembly.h>
5 #include <mono/metadata/mono-debug.h>
6 #include <mono/metadata/mono-config.h>
7 #define _IN_THE_MONO_DEBUGGER
8 #include "debug-debugger.h"
9 #include "debug-mini.h"
10 #include <libgc/include/libgc-mono-debugger.h>
17 * This file is only compiled on platforms where the debugger is supported - see the conditional
18 * definition of `debugger_sources' in Makefile.am.
20 * configure.in checks whether we're using the included libgc and disables the debugger if not.
23 #if !defined(MONO_DEBUGGER_SUPPORTED)
24 #error "Some clown tried to compile debug-debugger.c on an unsupported platform - fix Makefile.am!"
25 #elif !defined(USE_INCLUDED_LIBGC)
26 #error "Some clown #defined MONO_DEBUGGER_SUPPORTED without USE_INCLUDED_GC - fix configure.in!"
29 static guint64 debugger_compile_method (guint64 method_arg);
30 static guint64 debugger_get_virtual_method (guint64 class_arg, guint64 method_arg);
31 static guint64 debugger_get_boxed_object (guint64 klass_arg, guint64 val_arg);
32 static guint64 debugger_class_get_static_field_data (guint64 klass);
34 static guint64 debugger_run_finally (guint64 argument1, guint64 argument2);
35 static void debugger_initialize (void);
36 static guint64 debugger_init_code_buffer (void);
38 static void debugger_event_handler (MonoDebuggerEvent event, guint64 data, guint64 arg);
40 static guint64 debugger_create_string (G_GNUC_UNUSED guint64 dummy, G_GNUC_UNUSED guint64 dummy2,
41 G_GNUC_UNUSED guint64 dummy3, const gchar *string_argument);
42 static gint64 debugger_lookup_class (guint64 image_argument, G_GNUC_UNUSED guint64 dummy,
43 G_GNUC_UNUSED guint64 dummy2, gchar *full_name);
44 static guint64 debugger_insert_method_breakpoint (guint64 method_argument, guint64 index);
45 static guint64 debugger_insert_source_breakpoint (guint64 image_argument, guint64 token,
46 guint64 index, const gchar *class_name);
47 static void debugger_remove_breakpoint (guint64 index, G_GNUC_UNUSED guint64 dummy);
48 static guint64 debugger_register_class_init_callback (guint64 image_argument, guint64 token,
49 guint64 index, const gchar *class_name);
50 static void debugger_remove_class_init_callback (guint64 index, G_GNUC_UNUSED guint64 dummy);
51 static guint64 debugger_get_method_signature (guint64 argument1, G_GNUC_UNUSED guint64 argument2);
53 static guint64 debugger_abort_runtime_invoke (G_GNUC_UNUSED guint64 dummy1, G_GNUC_UNUSED guint64 dummy2);
55 #define EXECUTABLE_CODE_BUFFER_SIZE 4096
56 static guint8 *debugger_executable_code_buffer = NULL;
58 static GCThreadFunctions debugger_thread_vtable;
60 static MonoDebuggerMetadataInfo debugger_metadata_info = {
61 sizeof (MonoDebuggerMetadataInfo),
62 sizeof (MonoDefaults),
65 sizeof (MonoArrayType),
67 sizeof (MonoInternalThread),
68 G_STRUCT_OFFSET (MonoInternalThread, tid),
69 G_STRUCT_OFFSET (MonoInternalThread, stack_ptr),
70 G_STRUCT_OFFSET (MonoInternalThread, end_stack),
71 G_STRUCT_OFFSET (MonoClass, image),
72 G_STRUCT_OFFSET (MonoClass, instance_size),
73 G_STRUCT_OFFSET (MonoClass, parent),
74 G_STRUCT_OFFSET (MonoClass, type_token),
75 G_STRUCT_OFFSET (MonoClass, fields),
76 G_STRUCT_OFFSET (MonoClass, methods),
77 G_STRUCT_OFFSET (MonoClass, method.count),
78 G_STRUCT_OFFSET (MonoClass, this_arg),
79 G_STRUCT_OFFSET (MonoClass, byval_arg),
80 G_STRUCT_OFFSET (MonoClass, generic_class),
81 G_STRUCT_OFFSET (MonoClass, generic_container),
82 G_STRUCT_OFFSET (MonoClass, vtable),
83 sizeof (MonoClassField),
84 G_STRUCT_OFFSET (MonoClassField, type),
85 G_STRUCT_OFFSET (MonoClassField, offset),
86 G_STRUCT_OFFSET (MonoDefaults, corlib),
87 G_STRUCT_OFFSET (MonoDefaults, object_class),
88 G_STRUCT_OFFSET (MonoDefaults, byte_class),
89 G_STRUCT_OFFSET (MonoDefaults, void_class),
90 G_STRUCT_OFFSET (MonoDefaults, boolean_class),
91 G_STRUCT_OFFSET (MonoDefaults, sbyte_class),
92 G_STRUCT_OFFSET (MonoDefaults, int16_class),
93 G_STRUCT_OFFSET (MonoDefaults, uint16_class),
94 G_STRUCT_OFFSET (MonoDefaults, int32_class),
95 G_STRUCT_OFFSET (MonoDefaults, uint32_class),
96 G_STRUCT_OFFSET (MonoDefaults, int_class),
97 G_STRUCT_OFFSET (MonoDefaults, uint_class),
98 G_STRUCT_OFFSET (MonoDefaults, int64_class),
99 G_STRUCT_OFFSET (MonoDefaults, uint64_class),
100 G_STRUCT_OFFSET (MonoDefaults, single_class),
101 G_STRUCT_OFFSET (MonoDefaults, double_class),
102 G_STRUCT_OFFSET (MonoDefaults, char_class),
103 G_STRUCT_OFFSET (MonoDefaults, string_class),
104 G_STRUCT_OFFSET (MonoDefaults, enum_class),
105 G_STRUCT_OFFSET (MonoDefaults, array_class),
106 G_STRUCT_OFFSET (MonoDefaults, delegate_class),
107 G_STRUCT_OFFSET (MonoDefaults, exception_class),
108 G_STRUCT_OFFSET (MonoMethod, klass),
109 G_STRUCT_OFFSET (MonoMethod, token),
110 G_STRUCT_OFFSET (MonoMethod, name) + sizeof (void *),
111 G_STRUCT_OFFSET (MonoMethodInflated, declaring),
112 G_STRUCT_OFFSET (MonoVTable, klass),
113 G_STRUCT_OFFSET (MonoVTable, vtable)
116 extern void MONO_DEBUGGER__notification_function (guint64 command, guint64 data, guint64 data2);
119 * This is a global data symbol which is read by the debugger.
121 MonoDebuggerInfo MONO_DEBUGGER__debugger_info = {
123 MONO_DEBUGGER_MAJOR_VERSION,
124 MONO_DEBUGGER_MINOR_VERSION,
125 0, /* runtime_flags */
126 sizeof (MonoDebuggerInfo),
127 sizeof (MonoSymbolTable),
129 mono_trampoline_code,
130 &MONO_DEBUGGER__notification_function,
132 &debugger_metadata_info,
133 &mono_debug_debugger_version,
135 &debugger_compile_method,
136 &debugger_get_virtual_method,
137 &debugger_get_boxed_object,
138 &mono_debugger_runtime_invoke,
139 &debugger_class_get_static_field_data,
140 &debugger_run_finally,
141 &debugger_initialize,
143 &debugger_create_string,
144 &debugger_lookup_class,
146 &debugger_insert_method_breakpoint,
147 &debugger_insert_source_breakpoint,
148 &debugger_remove_breakpoint,
150 &debugger_register_class_init_callback,
151 &debugger_remove_class_init_callback,
153 &mono_debugger_thread_table,
155 &debugger_executable_code_buffer,
156 mono_breakpoint_info,
157 mono_breakpoint_info_index,
159 EXECUTABLE_CODE_BUFFER_SIZE,
160 MONO_BREAKPOINT_ARRAY_SIZE,
162 debugger_get_method_signature,
163 debugger_init_code_buffer,
166 &debugger_thread_vtable,
168 &mono_debugger_event_handler,
169 debugger_event_handler,
171 &_mono_debug_using_mono_debugger,
172 (gint32*)&_mono_debugger_interruption_request,
174 &debugger_abort_runtime_invoke
178 debugger_abort_runtime_invoke (G_GNUC_UNUSED guint64 dummy1, G_GNUC_UNUSED guint64 dummy2)
180 return mono_debugger_abort_runtime_invoke ();
184 debugger_compile_method (guint64 method_arg)
186 MonoMethod *method = (MonoMethod *) GUINT_TO_POINTER ((gsize) method_arg);
189 mono_debugger_lock ();
190 addr = mono_compile_method (method);
191 mono_debugger_unlock ();
193 return (guint64) (gsize) addr;
197 debugger_get_virtual_method (guint64 object_arg, guint64 method_arg)
199 MonoObject *object = (MonoObject *) GUINT_TO_POINTER ((gsize) object_arg);
200 MonoMethod *method = (MonoMethod *) GUINT_TO_POINTER ((gsize) method_arg);
202 if (mono_class_is_valuetype (mono_method_get_class (method)))
205 return (guint64) (gsize) mono_object_get_virtual_method (object, method);
209 debugger_get_boxed_object (guint64 klass_arg, guint64 val_arg)
211 static MonoObject *last_boxed_object = NULL;
212 MonoClass *klass = (MonoClass *) GUINT_TO_POINTER ((gsize) klass_arg);
213 gpointer val = (gpointer) GUINT_TO_POINTER ((gsize) val_arg);
216 if (!mono_class_is_valuetype (klass))
219 boxed = mono_value_box (mono_domain_get (), klass, val);
220 last_boxed_object = boxed; // Protect the object from being garbage collected
222 return (guint64) (gsize) boxed;
226 debugger_create_string (G_GNUC_UNUSED guint64 dummy, G_GNUC_UNUSED guint64 dummy2,
227 G_GNUC_UNUSED guint64 dummy3, const gchar *string_argument)
229 return (guint64) (gsize) mono_string_new_wrapper (string_argument);
233 debugger_lookup_class (guint64 image_argument, G_GNUC_UNUSED guint64 dummy,
234 G_GNUC_UNUSED guint64 dummy2, gchar *full_name)
236 MonoImage *image = (MonoImage *) GUINT_TO_POINTER ((gsize) image_argument);
237 gchar *name_space, *name, *pos;
240 pos = strrchr (full_name, '.');
242 name_space = full_name;
250 klass = mono_class_from_name (image, name_space ? name_space : "", name);
254 mono_class_init (klass);
255 mono_class_setup_methods (klass);
256 return (gint64) (gssize) klass;
260 debugger_run_finally (guint64 context_argument, G_GNUC_UNUSED guint64 dummy)
262 mono_debugger_run_finally (GUINT_TO_POINTER ((gsize)context_argument));
267 debugger_class_get_static_field_data (guint64 value)
269 MonoClass *klass = GUINT_TO_POINTER ((gsize) value);
270 MonoVTable *vtable = mono_class_vtable (mono_domain_get (), klass);
271 return (guint64) (gsize) mono_vtable_get_static_field_data (vtable);
275 debugger_insert_method_breakpoint (guint64 method_argument, guint64 index)
277 MonoMethod *method = GUINT_TO_POINTER ((gsize) method_argument);
278 MonoDebugMethodAddressList *info;
280 mono_debugger_lock ();
282 if (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) {
283 const char *name = method->name;
284 MonoMethod *nm = NULL;
286 if (method->klass->parent == mono_defaults.multicastdelegate_class) {
287 if (*name == 'I' && (strcmp (name, "Invoke") == 0))
288 nm = mono_marshal_get_delegate_invoke (method, NULL);
289 else if (*name == 'B' && (strcmp (name, "BeginInvoke") == 0))
290 nm = mono_marshal_get_delegate_begin_invoke (method);
291 else if (*name == 'E' && (strcmp (name, "EndInvoke") == 0))
292 nm = mono_marshal_get_delegate_end_invoke (method);
296 mono_debugger_unlock ();
303 info = mono_debugger_insert_method_breakpoint (method, index);
305 mono_debugger_unlock ();
306 return (guint64) (gsize) info;
310 debugger_insert_source_breakpoint (guint64 image_argument, guint64 token, guint64 index,
311 const gchar *class_name)
313 MonoImage *image = GUINT_TO_POINTER ((gsize) image_argument);
314 MonoDebugMethodAddressList *info;
318 mono_debugger_lock ();
320 klass = mono_debugger_register_class_init_callback (image, class_name, token, index);
321 if (!klass || !klass->inited || !klass->methods) {
322 mono_debugger_unlock ();
326 for (i = 0; i < klass->method.count; i++) {
327 MonoMethod *method = klass->methods [i];
329 if (method->token != token)
332 if (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) {
333 const char *name = method->name;
334 MonoMethod *nm = NULL;
336 if (method->klass->parent == mono_defaults.multicastdelegate_class) {
337 if (*name == 'I' && (strcmp (name, "Invoke") == 0))
338 nm = mono_marshal_get_delegate_invoke (method, NULL);
339 else if (*name == 'B' && (strcmp (name, "BeginInvoke") == 0))
340 nm = mono_marshal_get_delegate_begin_invoke (method);
341 else if (*name == 'E' && (strcmp (name, "EndInvoke") == 0))
342 nm = mono_marshal_get_delegate_end_invoke (method);
346 mono_debugger_unlock ();
353 info = mono_debug_lookup_method_addresses (method);
354 mono_debugger_unlock ();
355 return (guint64) (gsize) info;
358 mono_debugger_unlock ();
363 debugger_remove_breakpoint (guint64 index, G_GNUC_UNUSED guint64 dummy)
365 mono_debugger_lock ();
366 mono_debugger_remove_method_breakpoint (index);
367 mono_debugger_remove_class_init_callback (index);
368 mono_debugger_unlock ();
372 debugger_register_class_init_callback (guint64 image_argument, guint64 token, guint64 index,
373 const gchar *class_name)
375 MonoImage *image = GUINT_TO_POINTER ((gsize) image_argument);
378 mono_debugger_lock ();
379 klass = mono_debugger_register_class_init_callback (image, class_name, token, index);
380 mono_debugger_unlock ();
381 return (guint64) (gsize) klass;
385 debugger_remove_class_init_callback (guint64 index, G_GNUC_UNUSED guint64 dummy)
387 mono_debugger_lock ();
388 mono_debugger_remove_class_init_callback (index);
389 mono_debugger_unlock ();
393 debugger_get_method_signature (guint64 method_arg, G_GNUC_UNUSED guint64 dummy)
395 MonoMethod *method = (MonoMethod *) GUINT_TO_POINTER ((gsize) method_arg);
396 MonoMethodSignature *sig;
398 sig = mono_method_signature (method);
399 return (guint64) (gsize) sig;
403 debugger_event_handler (MonoDebuggerEvent event, guint64 data, guint64 arg)
405 MONO_DEBUGGER__notification_function (event, data, arg);
409 debugger_gc_thread_created (pthread_t thread, void *stack_ptr)
411 mono_debugger_event (MONO_DEBUGGER_EVENT_GC_THREAD_CREATED,
412 (guint64) (gsize) stack_ptr, thread);
416 debugger_gc_thread_exited (pthread_t thread, void *stack_ptr)
418 mono_debugger_event (MONO_DEBUGGER_EVENT_GC_THREAD_EXITED,
419 (guint64) (gsize) stack_ptr, thread);
423 debugger_gc_stop_world (void)
425 mono_debugger_event (MONO_DEBUGGER_EVENT_ACQUIRE_GLOBAL_THREAD_LOCK, 0, 0);
429 debugger_gc_start_world (void)
431 mono_debugger_event (MONO_DEBUGGER_EVENT_RELEASE_GLOBAL_THREAD_LOCK, 0, 0);
434 static GCThreadFunctions debugger_thread_vtable = {
437 debugger_gc_thread_created,
438 debugger_gc_thread_exited,
440 debugger_gc_stop_world,
441 debugger_gc_start_world
445 debugger_init_threads (void)
447 gc_thread_vtable = &debugger_thread_vtable;
453 debugger_finalize_threads (void)
455 gc_thread_vtable = NULL;
461 debugger_init_code_buffer (void)
463 if (!debugger_executable_code_buffer)
464 debugger_executable_code_buffer = mono_global_codeman_reserve (EXECUTABLE_CODE_BUFFER_SIZE);
465 return (guint64) (gsize) debugger_executable_code_buffer;
468 extern MonoDebuggerInfo *MONO_DEBUGGER__debugger_info_ptr;
469 extern long MONO_DEBUGGER__using_debugger;
472 debugger_initialize (void)
477 * Check whether we're running inside the debugger.
479 * There seems to be a bug in some versions of glibc which causes _dl_debug_state() being called with
480 * RT_CONSISTENT before relocations are done.
482 * If that happens, the debugger cannot read the `MONO_DEBUGGER__debugger_info' structure at the time
483 * the `libmono.so' library is loaded.
485 * As a workaround, the `mdb_debug_info' now also contains a global variable called
486 * `MONO_DEBUGGER__using_debugger' which may we set to 1 by the debugger to tell us that we're running
487 * inside the debugger.
489 * mini_init() checks this and calls mini_debugger_init() if necessary.
494 mini_debug_running_inside_mdb (void)
496 return MONO_DEBUGGER__using_debugger || mono_debug_using_mono_debugger ();
500 mini_debugger_init (void)
502 if (mono_debugger_event_handler) {
503 g_warning (G_STRLOC ": duplicate call to mono_debugger_init()!");
507 debugger_executable_code_buffer = mono_global_codeman_reserve (EXECUTABLE_CODE_BUFFER_SIZE);
508 mono_debugger_event_handler = debugger_event_handler;
511 * Use an indirect call so gcc can't optimize it away.
513 MONO_DEBUGGER__debugger_info.initialize ();
515 debugger_init_threads ();
518 * Initialize the thread manager.
520 * NOTE: We only reference the `MONO_DEBUGGER__debugger_info_ptr' here to prevent the
521 * linker from removing the .mdb_debug_info section.
524 mono_debugger_event (MONO_DEBUGGER_EVENT_INITIALIZE_THREAD_MANAGER,
525 (guint64) (gssize) MONO_DEBUGGER__debugger_info_ptr, 0);
529 mini_debugger_set_attach_ok (void)
531 MONO_DEBUGGER__debugger_info.runtime_flags |= DEBUGGER_RUNTIME_FLAGS_ATTACH_OK;
538 } DebuggerThreadArgs;
549 main_thread_handler (gpointer user_data)
551 MainThreadArgs *main_args = (MainThreadArgs *) user_data;
553 return mono_runtime_run_main (main_args->method, main_args->argc, main_args->argv, NULL);
557 mini_debugger_main (MonoDomain *domain, MonoAssembly *assembly, int argc, char **argv)
559 MainThreadArgs main_args;
561 MonoMethod *main_method;
564 * Get and compile the main function.
567 image = mono_assembly_get_image (assembly);
568 main_method = mono_get_method (image, mono_image_get_entry_point (image), NULL);
571 * Initialize managed code.
573 mono_debugger_event (MONO_DEBUGGER_EVENT_INITIALIZE_MANAGED_CODE,
574 (guint64) (gssize) main_method, 0);
577 * Start the main thread and wait until it's ready.
580 main_args.domain = domain;
581 main_args.method = main_method;
582 main_args.argc = argc;
583 main_args.argv = argv;
586 mono_thread_create (domain, main_thread_handler, &main_args);
588 main_thread_handler (&main_args);
591 mono_thread_manage ();
594 * This will never return.
596 mono_debugger_event (MONO_DEBUGGER_EVENT_WRAPPER_MAIN, 0, 0);