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 MonoGenericInst *generic_virtual_method_inst = 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_method_inst = (MonoGenericInst*)mono_arch_find_imt_method ((gpointer*)regs, code);
189 context.method_inst = generic_virtual_method_inst;
191 m = mono_class_inflate_generic_method (declaring, &context);
192 /* FIXME: only do this if the method is sharable */
193 m = mono_marshal_get_static_rgctx_invoke (m);
194 } else if ((context_used = mono_method_check_context_used (m))) {
195 MonoClass *klass = NULL;
196 MonoMethod *actual_method = NULL;
197 MonoVTable *vt = NULL;
198 MonoGenericInst *method_inst = NULL;
201 generic_shared = TRUE;
205 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
206 #ifdef MONO_ARCH_RGCTX_REG
207 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable ((gpointer*)regs, code);
209 klass = mrgctx->class_vtable->klass;
210 method_inst = mrgctx->method_inst;
212 g_assert_not_reached ();
214 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
215 #ifdef MONO_ARCH_RGCTX_REG
216 MonoVTable *vtable = mono_arch_find_static_call_vtable ((gpointer*)regs, code);
218 klass = vtable->klass;
220 g_assert_not_reached ();
223 #ifdef MONO_ARCH_HAVE_IMT
224 MonoObject *this_argument = mono_arch_find_this_argument ((gpointer*)regs, m,
225 mono_get_generic_context_from_code (code));
227 vt = this_argument->vtable;
228 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
230 g_assert (this_argument->vtable->klass->inited);
231 //mono_class_init (this_argument->vtable->klass);
234 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
240 g_assert (vtable_slot || klass);
243 int displacement = vtable_slot - ((gpointer*)vt);
245 g_assert_not_reached ();
247 g_assert (displacement > 0);
249 actual_method = vt->klass->vtable [displacement];
253 MonoGenericContext context = { NULL, NULL };
256 declaring = mono_method_get_declaring_generic_method (m);
260 if (klass->generic_class)
261 context.class_inst = klass->generic_class->context.class_inst;
262 else if (klass->generic_container)
263 context.class_inst = klass->generic_container->context.class_inst;
264 context.method_inst = method_inst;
266 actual_method = mono_class_inflate_generic_method (declaring, &context);
268 actual_method = mono_class_get_method_generic (klass, m);
272 g_assert (actual_method->klass == klass);
274 if (actual_method->is_inflated)
275 declaring = mono_method_get_declaring_generic_method (actual_method);
282 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
286 ji = mono_jit_info_table_find (mono_domain_get (), (char*)code);
290 /* Avoid recursion */
291 if (!(ji && ji->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED))
292 m = mono_marshal_get_synchronized_wrapper (m);
295 addr = mono_compile_method (m);
298 mono_debugger_trampoline_compiled (m, addr);
300 if (generic_virtual_method_inst) {
301 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
302 g_assert (vtable_slot);
304 mono_method_add_generic_virtual_invocation (mono_domain_get (), vtable_slot,
305 generic_virtual_method_inst, addr);
310 /* the method was jumped to */
312 MonoDomain *domain = mono_domain_get ();
314 /* Patch the got entries pointing to this method */
316 * We do this here instead of in mono_codegen () to cover the case when m
317 * was loaded from an aot image.
319 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
322 mono_domain_lock (domain);
323 list = g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
325 for (tmp = list; tmp; tmp = tmp->next) {
326 gpointer *got_slot = tmp->data;
329 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
332 mono_domain_unlock (domain);
338 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
341 if (m->klass->valuetype)
342 addr = get_unbox_trampoline (mono_get_generic_context_from_code (code), m, addr);
344 g_assert (*vtable_slot);
346 if (mono_aot_is_got_entry (code, (guint8*)vtable_slot) || mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot)) {
347 #ifdef MONO_ARCH_HAVE_IMT
348 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, (gpointer*)regs, code, m, NULL);
350 *vtable_slot = mono_get_addr_from_ftnptr (addr);
354 guint8 *plt_entry = mono_aot_get_plt_entry (code);
357 mono_arch_patch_plt_entry (plt_entry, addr);
358 } else if (!generic_shared || (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
359 mono_domain_lookup_shared_generic (mono_domain_get (), declaring)) {
360 if (generic_shared) {
361 if (m->wrapper_type != MONO_WRAPPER_NONE)
362 m = mono_marshal_method_from_wrapper (m);
363 g_assert (mono_method_is_generic_sharable_impl (m, FALSE));
366 /* Patch calling code */
371 mono_jit_info_table_find (mono_domain_get (), (char*)code);
372 MonoJitInfo *target_ji =
373 mono_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (addr));
375 if (mono_method_same_domain (ji, target_ji))
376 mono_arch_patch_callsite (ji->code_start, code, addr);
385 mono_generic_virtual_remoting_trampoline (gssize *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
387 MonoGenericContext context = { NULL, NULL };
388 MonoMethod *declaring;
391 g_assert (m->is_generic);
394 declaring = mono_method_get_declaring_generic_method (m);
398 if (m->klass->generic_class)
399 context.class_inst = m->klass->generic_class->context.class_inst;
401 g_assert (!m->klass->generic_container);
403 #ifdef MONO_ARCH_HAVE_IMT
404 context.method_inst = (MonoGenericInst*)mono_arch_find_imt_method ((gpointer*)regs, code);
406 m = mono_class_inflate_generic_method (declaring, &context);
407 m = mono_marshal_get_remoting_invoke_with_check (m);
409 addr = mono_compile_method (m);
412 mono_debugger_trampoline_compiled (m, addr);
418 * mono_aot_trampoline:
420 * This trampoline handles calls made from AOT code. We try to bypass the
421 * normal JIT compilation logic to avoid loading the metadata for the method.
423 #ifdef MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN
425 mono_aot_trampoline (gssize *regs, guint8 *code, guint8 *token_info,
430 MonoMethod *method = NULL;
432 gpointer *vtable_slot;
433 gboolean is_got_entry;
436 image = *(gpointer*)(gpointer)token_info;
437 token_info += sizeof (gpointer);
438 token = *(guint32*)(gpointer)token_info;
440 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token);
442 method = mono_get_method (image, token, NULL);
445 /* Use the generic code */
446 return mono_magic_trampoline (regs, code, method, tramp);
449 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
450 g_assert (!vtable_slot);
452 /* This is a normal call through a PLT entry */
453 plt_entry = mono_aot_get_plt_entry (code);
454 g_assert (plt_entry);
456 mono_arch_patch_plt_entry (plt_entry, addr);
458 is_got_entry = FALSE;
461 * Since AOT code is only used in the root domain,
462 * mono_domain_get () != mono_get_root_domain () means the calling method
463 * is AppDomain:InvokeInDomain, so this is the same check as in
464 * mono_method_same_domain () but without loading the metadata for the method.
466 if ((is_got_entry && (mono_domain_get () == mono_get_root_domain ())) || mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot)) {
467 #ifdef MONO_ARCH_HAVE_IMT
469 method = mono_get_method (image, token, NULL);
470 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, (gpointer*)regs, code, method, NULL);
479 * mono_aot_plt_trampoline:
481 * This trampoline handles calls made from AOT code through the PLT table.
484 mono_aot_plt_trampoline (gssize *regs, guint8 *code, guint8 *aot_module,
487 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
489 return mono_aot_plt_resolve (aot_module, plt_info_offset, code);
494 * mono_class_init_trampoline:
496 * This method calls mono_runtime_class_init () to run the static constructor
497 * for the type, then patches the caller code so it is not called again.
500 mono_class_init_trampoline (gssize *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
502 guint8 *plt_entry = mono_aot_get_plt_entry (code);
504 mono_runtime_class_init (vtable);
507 mono_arch_nullify_plt_entry (plt_entry);
509 mono_arch_nullify_class_init_trampoline (code, regs);
514 * mono_generic_class_init_trampoline:
516 * This method calls mono_runtime_class_init () to run the static constructor
520 mono_generic_class_init_trampoline (gssize *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
522 g_assert (!vtable->initialized);
524 mono_runtime_class_init (vtable);
528 mono_rgctx_lazy_fetch_trampoline (gssize *regs, guint8 *code, gpointer data, guint8 *tramp)
530 #ifdef MONO_ARCH_VTABLE_REG
531 static gboolean inited = FALSE;
532 static int num_lookups = 0;
533 guint32 slot = GPOINTER_TO_UINT (data);
534 gpointer arg = (gpointer)(gssize)regs [MONO_ARCH_VTABLE_REG];
535 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
536 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
539 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
546 return mono_method_fill_runtime_generic_context (arg, index);
548 return mono_class_fill_runtime_generic_context (arg, index);
550 g_assert_not_reached ();
555 mono_monitor_enter_trampoline (gssize *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
557 mono_monitor_enter (obj);
561 mono_monitor_exit_trampoline (gssize *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
563 mono_monitor_exit (obj);
566 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
569 * mono_delegate_trampoline:
571 * This trampoline handles calls made to Delegate:Invoke ().
572 * This is called once the first time a delegate is invoked, so it must be fast.
575 mono_delegate_trampoline (gssize *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
577 MonoDomain *domain = mono_domain_get ();
578 MonoDelegate *delegate;
581 MonoMethod *method = NULL;
582 gboolean multicast, callvirt;
583 MonoMethod *invoke = tramp_data [0];
584 guint8 *impl_this = tramp_data [1];
585 guint8 *impl_nothis = tramp_data [2];
587 /* Obtain the delegate object according to the calling convention */
590 * Avoid calling mono_get_generic_context_from_code () now since it is expensive,
591 * get_this_arg_from_call will call it if needed.
593 delegate = mono_arch_get_this_arg_from_call (NULL, mono_method_signature (invoke), regs, code);
595 if (delegate->method) {
596 method = delegate->method;
599 * delegate->method_ptr == NULL means the delegate was initialized by
600 * mini_delegate_ctor, while != NULL means it is initialized by
601 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
602 * (ctor_with_method () does this, but it doesn't store the wrapper back into
605 if (delegate->target && delegate->target->vtable->klass == mono_defaults.transparent_proxy_class)
606 method = mono_marshal_get_remoting_invoke (method);
607 else if (mono_method_signature (method)->hasthis && method->klass->valuetype)
608 method = mono_marshal_get_unbox_wrapper (method);
610 ji = mono_jit_info_table_find (domain, mono_get_addr_from_ftnptr (delegate->method_ptr));
614 callvirt = !delegate->target && method && mono_method_signature (method)->hasthis;
616 if (method && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
617 method = mono_marshal_get_synchronized_wrapper (method);
620 * If the called address is a trampoline, replace it with the compiled method so
621 * further calls don't have to go through the trampoline.
623 if (method && !callvirt) {
624 /* Avoid the overhead of looking up an already compiled method if possible */
625 if (delegate->method_code && *delegate->method_code) {
626 delegate->method_ptr = *delegate->method_code;
628 delegate->method_ptr = mono_compile_method (method);
629 if (delegate->method_code)
630 *delegate->method_code = delegate->method_ptr;
631 mono_debugger_trampoline_compiled (method, delegate->method_ptr);
635 multicast = ((MonoMulticastDelegate*)delegate)->prev != NULL;
636 if (!multicast && !callvirt) {
637 code = delegate->target ? impl_this : impl_nothis;
640 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
645 /* The general, unoptimized case */
646 m = mono_marshal_get_delegate_invoke (invoke, delegate);
647 code = mono_compile_method (m);
648 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
649 mono_debugger_trampoline_compiled (m, delegate->invoke_impl);
657 * mono_get_trampoline_func:
659 * Return the C function which needs to be called by the generic trampoline of type
663 mono_get_trampoline_func (MonoTrampolineType tramp_type)
665 switch (tramp_type) {
666 case MONO_TRAMPOLINE_JIT:
667 case MONO_TRAMPOLINE_JUMP:
668 return mono_magic_trampoline;
669 case MONO_TRAMPOLINE_CLASS_INIT:
670 return mono_class_init_trampoline;
671 case MONO_TRAMPOLINE_GENERIC_CLASS_INIT:
672 return mono_generic_class_init_trampoline;
673 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
674 return mono_rgctx_lazy_fetch_trampoline;
675 #ifdef MONO_ARCH_AOT_SUPPORTED
676 case MONO_TRAMPOLINE_AOT:
677 return mono_aot_trampoline;
678 case MONO_TRAMPOLINE_AOT_PLT:
679 return mono_aot_plt_trampoline;
681 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
682 case MONO_TRAMPOLINE_DELEGATE:
683 return mono_delegate_trampoline;
685 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
686 return mono_altstack_restore_prot;
687 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
688 return mono_generic_virtual_remoting_trampoline;
689 case MONO_TRAMPOLINE_MONITOR_ENTER:
690 return mono_monitor_enter_trampoline;
691 case MONO_TRAMPOLINE_MONITOR_EXIT:
692 return mono_monitor_exit_trampoline;
694 g_assert_not_reached ();
700 mono_trampolines_init (void)
702 InitializeCriticalSection (&trampolines_mutex);
707 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_JIT);
708 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_JUMP);
709 mono_trampoline_code [MONO_TRAMPOLINE_CLASS_INIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_CLASS_INIT);
710 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_CLASS_INIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_GENERIC_CLASS_INIT);
711 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
712 #ifdef MONO_ARCH_AOT_SUPPORTED
713 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_AOT);
714 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
716 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
717 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
719 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
720 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
721 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_ENTER] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_MONITOR_ENTER);
722 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_EXIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_MONITOR_EXIT);
726 mono_trampolines_cleanup (void)
728 if (class_init_hash_addr)
729 g_hash_table_destroy (class_init_hash_addr);
730 if (delegate_trampoline_hash_addr)
731 g_hash_table_destroy (delegate_trampoline_hash_addr);
733 DeleteCriticalSection (&trampolines_mutex);
737 mono_get_trampoline_code (MonoTrampolineType tramp_type)
739 g_assert (mono_trampoline_code [tramp_type]);
741 return mono_trampoline_code [tramp_type];
745 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
748 return mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, code_len);
750 return mono_arch_create_specific_trampoline (arg1, tramp_type, domain, code_len);
754 mono_create_class_init_trampoline (MonoVTable *vtable)
757 MonoDomain *domain = vtable->domain;
759 g_assert (!vtable->klass->generic_container);
761 /* previously created trampoline code */
762 mono_domain_lock (domain);
764 g_hash_table_lookup (domain_jit_info (domain)->class_init_trampoline_hash,
766 mono_domain_unlock (domain);
770 code = mono_create_specific_trampoline (vtable, MONO_TRAMPOLINE_CLASS_INIT, domain, NULL);
772 ptr = mono_create_ftnptr (domain, code);
774 /* store trampoline address */
775 mono_domain_lock (domain);
776 g_hash_table_insert (domain_jit_info (domain)->class_init_trampoline_hash,
778 mono_domain_unlock (domain);
780 mono_trampolines_lock ();
781 if (!class_init_hash_addr)
782 class_init_hash_addr = g_hash_table_new (NULL, NULL);
783 g_hash_table_insert (class_init_hash_addr, ptr, vtable);
784 mono_trampolines_unlock ();
790 mono_create_generic_class_init_trampoline (void)
792 #ifdef MONO_ARCH_VTABLE_REG
793 static gpointer code;
795 mono_trampolines_lock ();
799 code = mono_aot_get_named_code ("generic_class_init_trampoline");
801 code = mono_arch_create_generic_class_init_trampoline ();
804 mono_trampolines_unlock ();
808 g_assert_not_reached ();
813 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper)
817 guint32 code_size = 0;
819 code = mono_jit_find_compiled_method (domain, method);
823 mono_domain_lock (domain);
824 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
825 mono_domain_unlock (domain);
829 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
830 g_assert (code_size);
832 ji = mono_domain_alloc0 (domain, sizeof (MonoJitInfo));
833 ji->code_start = code;
834 ji->code_size = code_size;
838 * mono_delegate_ctor needs to find the method metadata from the
839 * trampoline address, so we save it here.
842 mono_jit_info_table_add (domain, ji);
844 mono_domain_lock (domain);
845 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
846 mono_domain_unlock (domain);
848 return ji->code_start;
852 mono_create_jit_trampoline_in_domain (MonoDomain *domain, MonoMethod *method)
857 /* Avoid creating trampolines if possible */
858 gpointer code = mono_jit_find_compiled_method (domain, method);
864 mono_domain_lock (domain);
865 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
866 mono_domain_unlock (domain);
870 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
872 mono_domain_lock (domain);
873 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
874 mono_domain_unlock (domain);
876 mono_jit_stats.method_trampolines++;
882 mono_create_jit_trampoline (MonoMethod *method)
884 return mono_create_jit_trampoline_in_domain (mono_domain_get (), method);
887 #ifdef MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN
889 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
893 MonoDomain *domain = mono_domain_get ();
896 buf = start = mono_domain_code_reserve (domain, 2 * sizeof (gpointer));
898 *(gpointer*)(gpointer)buf = image;
899 buf += sizeof (gpointer);
900 *(guint32*)(gpointer)buf = token;
902 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
904 mono_jit_stats.method_trampolines++;
911 mono_create_delegate_trampoline (MonoClass *klass)
913 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
914 MonoDomain *domain = mono_domain_get ();
916 guint32 code_size = 0;
917 gpointer *tramp_data;
920 mono_domain_lock (domain);
921 ptr = g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, klass);
922 mono_domain_unlock (domain);
926 // Precompute the delegate invoke impl and pass it to the delegate trampoline
927 invoke = mono_get_delegate_invoke (klass);
930 tramp_data = mono_domain_alloc (domain, sizeof (gpointer) * 3);
931 tramp_data [0] = invoke;
933 tramp_data [1] = NULL;
934 tramp_data [2] = NULL;
936 tramp_data [1] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
937 tramp_data [2] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
940 ptr = mono_create_specific_trampoline (tramp_data, MONO_TRAMPOLINE_DELEGATE, mono_domain_get (), &code_size);
941 g_assert (code_size);
943 /* store trampoline address */
944 mono_domain_lock (domain);
945 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash,
947 mono_domain_unlock (domain);
949 mono_trampolines_lock ();
950 if (!delegate_trampoline_hash_addr)
951 delegate_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
952 g_hash_table_insert (delegate_trampoline_hash_addr, ptr, klass);
953 mono_trampolines_unlock ();
962 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
964 static gboolean inited = FALSE;
965 static int num_trampolines = 0;
970 return mono_aot_get_lazy_fetch_trampoline (offset);
972 mono_trampolines_lock ();
973 if (rgctx_lazy_fetch_trampoline_hash)
974 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
977 mono_trampolines_unlock ();
981 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset);
982 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
984 mono_trampolines_lock ();
985 if (!rgctx_lazy_fetch_trampoline_hash) {
986 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
987 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
989 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
990 g_assert (offset != -1);
991 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
992 mono_trampolines_unlock ();
995 mono_counters_register ("RGCTX num lazy fetch trampolines",
996 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1005 mono_create_monitor_enter_trampoline (void)
1007 static gpointer code;
1009 if (mono_aot_only) {
1011 code = mono_aot_get_named_code ("monitor_enter_trampoline");
1015 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1016 mono_trampolines_lock ();
1019 code = mono_arch_create_monitor_enter_trampoline ();
1021 mono_trampolines_unlock ();
1024 g_assert_not_reached ();
1031 mono_create_monitor_exit_trampoline (void)
1033 static gpointer code;
1035 if (mono_aot_only) {
1037 code = mono_aot_get_named_code ("monitor_exit_trampoline");
1041 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1042 mono_trampolines_lock ();
1045 code = mono_arch_create_monitor_exit_trampoline ();
1047 mono_trampolines_unlock ();
1050 g_assert_not_reached ();
1056 mono_find_class_init_trampoline_by_addr (gconstpointer addr)
1060 mono_trampolines_lock ();
1061 if (class_init_hash_addr)
1062 res = g_hash_table_lookup (class_init_hash_addr, addr);
1065 mono_trampolines_unlock ();
1070 mono_find_delegate_trampoline_by_addr (gconstpointer addr)
1074 mono_trampolines_lock ();
1075 if (delegate_trampoline_hash_addr)
1076 res = g_hash_table_lookup (delegate_trampoline_hash_addr, addr);
1079 mono_trampolines_unlock ();
1084 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1088 mono_trampolines_lock ();
1089 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1090 /* We store the real offset + 1 so we can detect when the lookup fails */
1091 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1099 mono_trampolines_unlock ();