5 #include <mono/metadata/appdomain.h>
6 #include <mono/metadata/metadata-internals.h>
7 #include <mono/metadata/marshal.h>
8 #include <mono/metadata/tabledefs.h>
9 #include <mono/utils/mono-counters.h>
11 #ifdef HAVE_VALGRIND_MEMCHECK_H
12 #include <valgrind/memcheck.h>
16 #include "debug-mini.h"
19 * Address of the trampoline code. This is used by the debugger to check
20 * whether a method is a trampoline.
22 guint8* mono_trampoline_code [MONO_TRAMPOLINE_NUM];
24 static GHashTable *class_init_hash_addr = NULL;
25 static GHashTable *delegate_trampoline_hash_addr = NULL;
26 static GHashTable *rgctx_lazy_fetch_trampoline_hash = NULL;
27 static GHashTable *rgctx_lazy_fetch_trampoline_hash_addr = NULL;
29 #define mono_trampolines_lock() EnterCriticalSection (&trampolines_mutex)
30 #define mono_trampolines_unlock() LeaveCriticalSection (&trampolines_mutex)
31 static CRITICAL_SECTION trampolines_mutex;
34 get_unbox_trampoline (MonoGenericSharingContext *gsctx, MonoMethod *m, gpointer addr)
37 return mono_aot_get_unbox_trampoline (m);
39 return mono_arch_get_unbox_trampoline (gsctx, m, addr);
42 #ifdef MONO_ARCH_HAVE_IMT
45 mono_convert_imt_slot_to_vtable_slot (gpointer* slot, gpointer *regs, guint8 *code, MonoMethod *method, MonoMethod **impl_method)
47 MonoGenericSharingContext *gsctx = mono_get_generic_context_from_code (code);
48 MonoObject *this_argument = mono_arch_find_this_argument (regs, method, gsctx);
49 MonoVTable *vt = this_argument->vtable;
50 int displacement = slot - ((gpointer*)vt);
52 if (displacement > 0) {
53 /* slot is in the vtable, not in the IMT */
55 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p is in the vtable, not in the IMT\n", slot);
59 MonoMethod *imt_method = mono_arch_find_imt_method (regs, code);
61 int imt_slot = MONO_IMT_SIZE + displacement;
63 interface_offset = mono_class_interface_offset (vt->klass, imt_method->klass);
65 if (interface_offset < 0) {
66 g_print ("%s doesn't implement interface %s\n", mono_type_get_name_full (&vt->klass->byval_arg, 0), mono_type_get_name_full (&imt_method->klass->byval_arg, 0));
67 g_assert_not_reached ();
69 mono_vtable_build_imt_slot (vt, mono_method_get_imt_slot (imt_method));
72 *impl_method = mono_class_get_vtable_entry (vt->klass, interface_offset + imt_method->slot);
74 printf ("mono_convert_imt_slot_to_vtable_slot: method = %s.%s.%s, imt_method = %s.%s.%s\n",
75 method->klass->name_space, method->klass->name, method->name,
76 imt_method->klass->name_space, imt_method->klass->name, imt_method->name);
78 g_assert (imt_slot < MONO_IMT_SIZE);
79 if (vt->imt_collisions_bitmap & (1 << imt_slot)) {
80 int vtable_offset = interface_offset + mono_method_get_vtable_index (imt_method);
81 gpointer *vtable_slot = & (vt->vtable [vtable_offset]);
83 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, and colliding becomes %p[%d] (interface_offset = %d, method->slot = %d)\n", slot, imt_slot, vtable_slot, vtable_offset, interface_offset, imt_method->slot);
88 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, but not colliding\n", slot, imt_slot);
97 * mono_magic_trampoline:
99 * This trampoline handles calls from JITted code.
102 mono_magic_trampoline (gssize *regs, guint8 *code, MonoMethod *m, guint8* tramp)
105 gpointer *vtable_slot;
106 gboolean generic_shared = FALSE;
107 MonoMethod *declaring = NULL;
108 MonoMethod *generic_virtual = NULL;
111 #if MONO_ARCH_COMMON_VTABLE_TRAMPOLINE
112 if (m == MONO_FAKE_VTABLE_METHOD) {
114 MonoVTable *vt = mono_arch_get_vcall_slot (code, (gpointer*)regs, &displacement);
119 ji = mono_jit_info_table_find (mono_domain_get (), (char*)code);
121 printf ("Caller: %s\n", mono_method_full_name (ji->method, TRUE));
122 /* Print some debug info */
123 for (i = 0; i < 32; ++i)
124 printf ("0x%x ", code [-32 + i]);
128 if (displacement > 0) {
129 displacement -= G_STRUCT_OFFSET (MonoVTable, vtable);
130 g_assert (displacement >= 0);
131 displacement /= sizeof (gpointer);
133 /* Avoid loading metadata or creating a generic vtable if possible */
134 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, displacement);
135 if (addr && !vt->klass->valuetype) {
136 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
137 if (mono_aot_is_got_entry (code, (guint8*)vtable_slot) || mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot)) {
138 *vtable_slot = mono_get_addr_from_ftnptr (addr);
144 m = mono_class_get_vtable_entry (vt->klass, displacement);
145 /*g_print ("%s with disp %d: %s at %p\n", vt->klass->name, displacement, m->name, code);*/
147 /* We got here from an interface method: redirect to IMT handling */
148 m = MONO_FAKE_IMT_METHOD;
149 /*g_print ("vtable with disp %d at %p\n", displacement, code);*/
153 /* this is the IMT trampoline */
154 #ifdef MONO_ARCH_HAVE_IMT
155 if (m == MONO_FAKE_IMT_METHOD) {
156 MonoMethod *impl_method;
157 /* we get the interface method because mono_convert_imt_slot_to_vtable_slot ()
158 * needs the signature to be able to find the this argument
160 m = mono_arch_find_imt_method ((gpointer*)regs, code);
161 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
162 g_assert (vtable_slot);
163 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, (gpointer*)regs, code, m, &impl_method);
164 /* mono_convert_imt_slot_to_vtable_slot () also gives us the method that is supposed
165 * to be called, so we compile it and go ahead as usual.
167 /*g_print ("imt found method %p (%s) at %p\n", impl_method, impl_method->name, code);*/
173 MonoGenericContext context = { NULL, NULL };
174 MonoMethod *declaring;
177 declaring = mono_method_get_declaring_generic_method (m);
181 if (m->klass->generic_class)
182 context.class_inst = m->klass->generic_class->context.class_inst;
184 g_assert (!m->klass->generic_container);
186 #ifdef MONO_ARCH_HAVE_IMT
187 generic_virtual = mono_arch_find_imt_method ((gpointer*)regs, code);
189 if (generic_virtual) {
190 g_assert (generic_virtual->is_inflated);
191 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
194 m = mono_class_inflate_generic_method (declaring, &context);
195 /* FIXME: only do this if the method is sharable */
196 m = mono_marshal_get_static_rgctx_invoke (m);
197 } else if ((context_used = mono_method_check_context_used (m))) {
198 MonoClass *klass = NULL;
199 MonoMethod *actual_method = NULL;
200 MonoVTable *vt = NULL;
201 MonoGenericInst *method_inst = NULL;
204 generic_shared = TRUE;
208 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
209 #ifdef MONO_ARCH_RGCTX_REG
210 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable ((gpointer*)regs, code);
212 klass = mrgctx->class_vtable->klass;
213 method_inst = mrgctx->method_inst;
215 g_assert_not_reached ();
217 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
218 #ifdef MONO_ARCH_RGCTX_REG
219 MonoVTable *vtable = mono_arch_find_static_call_vtable ((gpointer*)regs, code);
221 klass = vtable->klass;
223 g_assert_not_reached ();
226 #ifdef MONO_ARCH_HAVE_IMT
227 MonoObject *this_argument = mono_arch_find_this_argument ((gpointer*)regs, m,
228 mono_get_generic_context_from_code (code));
230 vt = this_argument->vtable;
231 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
233 g_assert (this_argument->vtable->klass->inited);
234 //mono_class_init (this_argument->vtable->klass);
237 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
243 g_assert (vtable_slot || klass);
246 int displacement = vtable_slot - ((gpointer*)vt);
248 g_assert_not_reached ();
250 g_assert (displacement > 0);
252 actual_method = vt->klass->vtable [displacement];
256 MonoGenericContext context = { NULL, NULL };
259 declaring = mono_method_get_declaring_generic_method (m);
263 if (klass->generic_class)
264 context.class_inst = klass->generic_class->context.class_inst;
265 else if (klass->generic_container)
266 context.class_inst = klass->generic_container->context.class_inst;
267 context.method_inst = method_inst;
269 actual_method = mono_class_inflate_generic_method (declaring, &context);
271 actual_method = mono_class_get_method_generic (klass, m);
275 g_assert (actual_method->klass == klass);
277 if (actual_method->is_inflated)
278 declaring = mono_method_get_declaring_generic_method (actual_method);
285 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
289 ji = mono_jit_info_table_find (mono_domain_get (), (char*)code);
293 /* Avoid recursion */
294 if (!(ji && ji->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED))
295 m = mono_marshal_get_synchronized_wrapper (m);
298 addr = mono_compile_method (m);
301 mono_debugger_trampoline_compiled (m, addr);
303 if (generic_virtual) {
304 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
305 g_assert (vtable_slot);
307 mono_method_add_generic_virtual_invocation (mono_domain_get (), vtable_slot,
308 generic_virtual, addr);
313 /* the method was jumped to */
315 MonoDomain *domain = mono_domain_get ();
317 /* Patch the got entries pointing to this method */
319 * We do this here instead of in mono_codegen () to cover the case when m
320 * was loaded from an aot image.
322 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
325 mono_domain_lock (domain);
326 list = g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
328 for (tmp = list; tmp; tmp = tmp->next) {
329 gpointer *got_slot = tmp->data;
332 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
335 mono_domain_unlock (domain);
341 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
344 if (m->klass->valuetype)
345 addr = get_unbox_trampoline (mono_get_generic_context_from_code (code), m, addr);
347 g_assert (*vtable_slot);
349 if (mono_aot_is_got_entry (code, (guint8*)vtable_slot) || mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot)) {
350 #ifdef MONO_ARCH_HAVE_IMT
351 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, (gpointer*)regs, code, m, NULL);
353 *vtable_slot = mono_get_addr_from_ftnptr (addr);
357 guint8 *plt_entry = mono_aot_get_plt_entry (code);
360 mono_arch_patch_plt_entry (plt_entry, addr);
361 } else if (!generic_shared || (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
362 mono_domain_lookup_shared_generic (mono_domain_get (), declaring)) {
363 if (generic_shared) {
364 if (m->wrapper_type != MONO_WRAPPER_NONE)
365 m = mono_marshal_method_from_wrapper (m);
366 g_assert (mono_method_is_generic_sharable_impl (m, FALSE));
369 /* Patch calling code */
374 mono_jit_info_table_find (mono_domain_get (), (char*)code);
375 MonoJitInfo *target_ji =
376 mono_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (addr));
378 if (mono_method_same_domain (ji, target_ji))
379 mono_arch_patch_callsite (ji->code_start, code, addr);
388 mono_generic_virtual_remoting_trampoline (gssize *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
390 MonoGenericContext context = { NULL, NULL };
391 MonoMethod *declaring;
394 g_assert (m->is_generic);
397 declaring = mono_method_get_declaring_generic_method (m);
401 if (m->klass->generic_class)
402 context.class_inst = m->klass->generic_class->context.class_inst;
404 g_assert (!m->klass->generic_container);
406 #ifdef MONO_ARCH_HAVE_IMT
407 context.method_inst = (MonoGenericInst*)mono_arch_find_imt_method ((gpointer*)regs, code);
409 m = mono_class_inflate_generic_method (declaring, &context);
410 m = mono_marshal_get_remoting_invoke_with_check (m);
412 addr = mono_compile_method (m);
415 mono_debugger_trampoline_compiled (m, addr);
421 * mono_aot_trampoline:
423 * This trampoline handles calls made from AOT code. We try to bypass the
424 * normal JIT compilation logic to avoid loading the metadata for the method.
426 #ifdef MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN
428 mono_aot_trampoline (gssize *regs, guint8 *code, guint8 *token_info,
433 MonoMethod *method = NULL;
435 gpointer *vtable_slot;
436 gboolean is_got_entry;
439 image = *(gpointer*)(gpointer)token_info;
440 token_info += sizeof (gpointer);
441 token = *(guint32*)(gpointer)token_info;
443 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token);
445 method = mono_get_method (image, token, NULL);
448 /* Use the generic code */
449 return mono_magic_trampoline (regs, code, method, tramp);
452 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
453 g_assert (!vtable_slot);
455 /* This is a normal call through a PLT entry */
456 plt_entry = mono_aot_get_plt_entry (code);
457 g_assert (plt_entry);
459 mono_arch_patch_plt_entry (plt_entry, addr);
461 is_got_entry = FALSE;
464 * Since AOT code is only used in the root domain,
465 * mono_domain_get () != mono_get_root_domain () means the calling method
466 * is AppDomain:InvokeInDomain, so this is the same check as in
467 * mono_method_same_domain () but without loading the metadata for the method.
469 if ((is_got_entry && (mono_domain_get () == mono_get_root_domain ())) || mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot)) {
470 #ifdef MONO_ARCH_HAVE_IMT
472 method = mono_get_method (image, token, NULL);
473 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, (gpointer*)regs, code, method, NULL);
482 * mono_aot_plt_trampoline:
484 * This trampoline handles calls made from AOT code through the PLT table.
487 mono_aot_plt_trampoline (gssize *regs, guint8 *code, guint8 *aot_module,
490 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
492 return mono_aot_plt_resolve (aot_module, plt_info_offset, code);
497 * mono_class_init_trampoline:
499 * This method calls mono_runtime_class_init () to run the static constructor
500 * for the type, then patches the caller code so it is not called again.
503 mono_class_init_trampoline (gssize *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
505 guint8 *plt_entry = mono_aot_get_plt_entry (code);
507 mono_runtime_class_init (vtable);
510 mono_arch_nullify_plt_entry (plt_entry);
512 mono_arch_nullify_class_init_trampoline (code, regs);
517 * mono_generic_class_init_trampoline:
519 * This method calls mono_runtime_class_init () to run the static constructor
523 mono_generic_class_init_trampoline (gssize *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
525 g_assert (!vtable->initialized);
527 mono_runtime_class_init (vtable);
531 mono_rgctx_lazy_fetch_trampoline (gssize *regs, guint8 *code, gpointer data, guint8 *tramp)
533 #ifdef MONO_ARCH_VTABLE_REG
534 static gboolean inited = FALSE;
535 static int num_lookups = 0;
536 guint32 slot = GPOINTER_TO_UINT (data);
537 gpointer arg = (gpointer)(gssize)regs [MONO_ARCH_VTABLE_REG];
538 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
539 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
542 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
549 return mono_method_fill_runtime_generic_context (arg, index);
551 return mono_class_fill_runtime_generic_context (arg, index);
553 g_assert_not_reached ();
558 mono_monitor_enter_trampoline (gssize *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
560 mono_monitor_enter (obj);
564 mono_monitor_exit_trampoline (gssize *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
566 mono_monitor_exit (obj);
569 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
572 * mono_delegate_trampoline:
574 * This trampoline handles calls made to Delegate:Invoke ().
575 * This is called once the first time a delegate is invoked, so it must be fast.
578 mono_delegate_trampoline (gssize *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
580 MonoDomain *domain = mono_domain_get ();
581 MonoDelegate *delegate;
584 MonoMethod *method = NULL;
585 gboolean multicast, callvirt;
586 MonoMethod *invoke = tramp_data [0];
587 guint8 *impl_this = tramp_data [1];
588 guint8 *impl_nothis = tramp_data [2];
590 /* Obtain the delegate object according to the calling convention */
593 * Avoid calling mono_get_generic_context_from_code () now since it is expensive,
594 * get_this_arg_from_call will call it if needed.
596 delegate = mono_arch_get_this_arg_from_call (NULL, mono_method_signature (invoke), regs, code);
598 if (delegate->method) {
599 method = delegate->method;
602 * delegate->method_ptr == NULL means the delegate was initialized by
603 * mini_delegate_ctor, while != NULL means it is initialized by
604 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
605 * (ctor_with_method () does this, but it doesn't store the wrapper back into
608 if (delegate->target && delegate->target->vtable->klass == mono_defaults.transparent_proxy_class)
609 method = mono_marshal_get_remoting_invoke (method);
610 else if (mono_method_signature (method)->hasthis && method->klass->valuetype)
611 method = mono_marshal_get_unbox_wrapper (method);
613 ji = mono_jit_info_table_find (domain, mono_get_addr_from_ftnptr (delegate->method_ptr));
617 callvirt = !delegate->target && method && mono_method_signature (method)->hasthis;
619 if (method && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
620 method = mono_marshal_get_synchronized_wrapper (method);
623 * If the called address is a trampoline, replace it with the compiled method so
624 * further calls don't have to go through the trampoline.
626 if (method && !callvirt) {
627 /* Avoid the overhead of looking up an already compiled method if possible */
628 if (delegate->method_code && *delegate->method_code) {
629 delegate->method_ptr = *delegate->method_code;
631 delegate->method_ptr = mono_compile_method (method);
632 if (delegate->method_code)
633 *delegate->method_code = delegate->method_ptr;
634 mono_debugger_trampoline_compiled (method, delegate->method_ptr);
638 multicast = ((MonoMulticastDelegate*)delegate)->prev != NULL;
639 if (!multicast && !callvirt) {
640 code = delegate->target ? impl_this : impl_nothis;
643 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
648 /* The general, unoptimized case */
649 m = mono_marshal_get_delegate_invoke (invoke, delegate);
650 code = mono_compile_method (m);
651 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
652 mono_debugger_trampoline_compiled (m, delegate->invoke_impl);
660 * mono_get_trampoline_func:
662 * Return the C function which needs to be called by the generic trampoline of type
666 mono_get_trampoline_func (MonoTrampolineType tramp_type)
668 switch (tramp_type) {
669 case MONO_TRAMPOLINE_JIT:
670 case MONO_TRAMPOLINE_JUMP:
671 return mono_magic_trampoline;
672 case MONO_TRAMPOLINE_CLASS_INIT:
673 return mono_class_init_trampoline;
674 case MONO_TRAMPOLINE_GENERIC_CLASS_INIT:
675 return mono_generic_class_init_trampoline;
676 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
677 return mono_rgctx_lazy_fetch_trampoline;
678 #ifdef MONO_ARCH_AOT_SUPPORTED
679 case MONO_TRAMPOLINE_AOT:
680 return mono_aot_trampoline;
681 case MONO_TRAMPOLINE_AOT_PLT:
682 return mono_aot_plt_trampoline;
684 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
685 case MONO_TRAMPOLINE_DELEGATE:
686 return mono_delegate_trampoline;
688 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
689 return mono_altstack_restore_prot;
690 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
691 return mono_generic_virtual_remoting_trampoline;
692 case MONO_TRAMPOLINE_MONITOR_ENTER:
693 return mono_monitor_enter_trampoline;
694 case MONO_TRAMPOLINE_MONITOR_EXIT:
695 return mono_monitor_exit_trampoline;
697 g_assert_not_reached ();
703 mono_trampolines_init (void)
705 InitializeCriticalSection (&trampolines_mutex);
710 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_JIT);
711 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_JUMP);
712 mono_trampoline_code [MONO_TRAMPOLINE_CLASS_INIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_CLASS_INIT);
713 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_CLASS_INIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_GENERIC_CLASS_INIT);
714 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
715 #ifdef MONO_ARCH_AOT_SUPPORTED
716 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_AOT);
717 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
719 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
720 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
722 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
723 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
724 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_ENTER] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_MONITOR_ENTER);
725 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_EXIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_MONITOR_EXIT);
729 mono_trampolines_cleanup (void)
731 if (class_init_hash_addr)
732 g_hash_table_destroy (class_init_hash_addr);
733 if (delegate_trampoline_hash_addr)
734 g_hash_table_destroy (delegate_trampoline_hash_addr);
736 DeleteCriticalSection (&trampolines_mutex);
740 mono_get_trampoline_code (MonoTrampolineType tramp_type)
742 g_assert (mono_trampoline_code [tramp_type]);
744 return mono_trampoline_code [tramp_type];
748 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
751 return mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, code_len);
753 return mono_arch_create_specific_trampoline (arg1, tramp_type, domain, code_len);
757 mono_create_class_init_trampoline (MonoVTable *vtable)
760 MonoDomain *domain = vtable->domain;
762 g_assert (!vtable->klass->generic_container);
764 /* previously created trampoline code */
765 mono_domain_lock (domain);
767 g_hash_table_lookup (domain_jit_info (domain)->class_init_trampoline_hash,
769 mono_domain_unlock (domain);
773 code = mono_create_specific_trampoline (vtable, MONO_TRAMPOLINE_CLASS_INIT, domain, NULL);
775 ptr = mono_create_ftnptr (domain, code);
777 /* store trampoline address */
778 mono_domain_lock (domain);
779 g_hash_table_insert (domain_jit_info (domain)->class_init_trampoline_hash,
781 mono_domain_unlock (domain);
783 mono_trampolines_lock ();
784 if (!class_init_hash_addr)
785 class_init_hash_addr = g_hash_table_new (NULL, NULL);
786 g_hash_table_insert (class_init_hash_addr, ptr, vtable);
787 mono_trampolines_unlock ();
793 mono_create_generic_class_init_trampoline (void)
795 #ifdef MONO_ARCH_VTABLE_REG
796 static gpointer code;
798 mono_trampolines_lock ();
802 code = mono_aot_get_named_code ("generic_class_init_trampoline");
804 code = mono_arch_create_generic_class_init_trampoline ();
807 mono_trampolines_unlock ();
811 g_assert_not_reached ();
816 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper)
820 guint32 code_size = 0;
822 code = mono_jit_find_compiled_method (domain, method);
826 mono_domain_lock (domain);
827 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
828 mono_domain_unlock (domain);
832 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
833 g_assert (code_size);
835 ji = mono_domain_alloc0 (domain, sizeof (MonoJitInfo));
836 ji->code_start = code;
837 ji->code_size = code_size;
841 * mono_delegate_ctor needs to find the method metadata from the
842 * trampoline address, so we save it here.
845 mono_jit_info_table_add (domain, ji);
847 mono_domain_lock (domain);
848 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
849 mono_domain_unlock (domain);
851 return ji->code_start;
855 mono_create_jit_trampoline_in_domain (MonoDomain *domain, MonoMethod *method)
860 /* Avoid creating trampolines if possible */
861 gpointer code = mono_jit_find_compiled_method (domain, method);
867 mono_domain_lock (domain);
868 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
869 mono_domain_unlock (domain);
873 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
875 mono_domain_lock (domain);
876 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
877 mono_domain_unlock (domain);
879 mono_jit_stats.method_trampolines++;
885 mono_create_jit_trampoline (MonoMethod *method)
887 return mono_create_jit_trampoline_in_domain (mono_domain_get (), method);
890 #ifdef MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN
892 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
896 MonoDomain *domain = mono_domain_get ();
899 buf = start = mono_domain_code_reserve (domain, 2 * sizeof (gpointer));
901 *(gpointer*)(gpointer)buf = image;
902 buf += sizeof (gpointer);
903 *(guint32*)(gpointer)buf = token;
905 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
907 mono_jit_stats.method_trampolines++;
914 mono_create_delegate_trampoline (MonoClass *klass)
916 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
917 MonoDomain *domain = mono_domain_get ();
919 guint32 code_size = 0;
920 gpointer *tramp_data;
923 mono_domain_lock (domain);
924 ptr = g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, klass);
925 mono_domain_unlock (domain);
929 // Precompute the delegate invoke impl and pass it to the delegate trampoline
930 invoke = mono_get_delegate_invoke (klass);
933 tramp_data = mono_domain_alloc (domain, sizeof (gpointer) * 3);
934 tramp_data [0] = invoke;
936 tramp_data [1] = NULL;
937 tramp_data [2] = NULL;
939 tramp_data [1] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
940 tramp_data [2] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
943 ptr = mono_create_specific_trampoline (tramp_data, MONO_TRAMPOLINE_DELEGATE, mono_domain_get (), &code_size);
944 g_assert (code_size);
946 /* store trampoline address */
947 mono_domain_lock (domain);
948 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash,
950 mono_domain_unlock (domain);
952 mono_trampolines_lock ();
953 if (!delegate_trampoline_hash_addr)
954 delegate_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
955 g_hash_table_insert (delegate_trampoline_hash_addr, ptr, klass);
956 mono_trampolines_unlock ();
965 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
967 static gboolean inited = FALSE;
968 static int num_trampolines = 0;
973 return mono_aot_get_lazy_fetch_trampoline (offset);
975 mono_trampolines_lock ();
976 if (rgctx_lazy_fetch_trampoline_hash)
977 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
980 mono_trampolines_unlock ();
984 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset);
985 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
987 mono_trampolines_lock ();
988 if (!rgctx_lazy_fetch_trampoline_hash) {
989 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
990 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
992 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
993 g_assert (offset != -1);
994 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
995 mono_trampolines_unlock ();
998 mono_counters_register ("RGCTX num lazy fetch trampolines",
999 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1008 mono_create_monitor_enter_trampoline (void)
1010 static gpointer code;
1012 if (mono_aot_only) {
1014 code = mono_aot_get_named_code ("monitor_enter_trampoline");
1018 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1019 mono_trampolines_lock ();
1022 code = mono_arch_create_monitor_enter_trampoline ();
1024 mono_trampolines_unlock ();
1027 g_assert_not_reached ();
1034 mono_create_monitor_exit_trampoline (void)
1036 static gpointer code;
1038 if (mono_aot_only) {
1040 code = mono_aot_get_named_code ("monitor_exit_trampoline");
1044 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1045 mono_trampolines_lock ();
1048 code = mono_arch_create_monitor_exit_trampoline ();
1050 mono_trampolines_unlock ();
1053 g_assert_not_reached ();
1059 mono_find_class_init_trampoline_by_addr (gconstpointer addr)
1063 mono_trampolines_lock ();
1064 if (class_init_hash_addr)
1065 res = g_hash_table_lookup (class_init_hash_addr, addr);
1068 mono_trampolines_unlock ();
1073 mono_find_delegate_trampoline_by_addr (gconstpointer addr)
1077 mono_trampolines_lock ();
1078 if (delegate_trampoline_hash_addr)
1079 res = g_hash_table_lookup (delegate_trampoline_hash_addr, addr);
1082 mono_trampolines_unlock ();
1087 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1091 mono_trampolines_lock ();
1092 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1093 /* We store the real offset + 1 so we can detect when the lookup fails */
1094 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1102 mono_trampolines_unlock ();