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));
74 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
75 MonoGenericContext context = { NULL, NULL };
78 * Generic virtual method, imt_method contains the inflated interface
79 * method, need to get the inflated impl method.
81 /* imt_method->slot might not be set */
82 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_declaring_generic_method (imt_method)->slot);
84 if (impl->klass->generic_class)
85 context.class_inst = impl->klass->generic_class->context.class_inst;
86 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
87 impl = mono_class_inflate_generic_method (impl, &context);
89 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + imt_method->slot);
94 printf ("mono_convert_imt_slot_to_vtable_slot: method = %s.%s.%s, imt_method = %s.%s.%s\n",
95 method->klass->name_space, method->klass->name, method->name,
96 imt_method->klass->name_space, imt_method->klass->name, imt_method->name);
99 g_assert (imt_slot < MONO_IMT_SIZE);
100 if (vt->imt_collisions_bitmap & (1 << imt_slot)) {
101 int vtable_offset = interface_offset + mono_method_get_vtable_index (imt_method);
102 gpointer *vtable_slot = & (vt->vtable [vtable_offset]);
104 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);
109 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, but not colliding\n", slot, imt_slot);
118 * mono_magic_trampoline:
120 * This trampoline handles calls from JITted code.
123 mono_magic_trampoline (gssize *regs, guint8 *code, MonoMethod *m, guint8* tramp)
126 gpointer *vtable_slot;
127 gboolean generic_shared = FALSE;
128 MonoMethod *declaring = NULL;
129 MonoMethod *generic_virtual = NULL;
131 gboolean proxy = FALSE;
133 #if MONO_ARCH_COMMON_VTABLE_TRAMPOLINE
134 if (m == MONO_FAKE_VTABLE_METHOD) {
136 MonoVTable *vt = mono_arch_get_vcall_slot (code, (gpointer*)regs, &displacement);
141 ji = mono_jit_info_table_find (mono_domain_get (), (char*)code);
143 printf ("Caller: %s\n", mono_method_full_name (ji->method, TRUE));
144 /* Print some debug info */
145 for (i = 0; i < 32; ++i)
146 printf ("0x%x ", code [-32 + i]);
150 if (displacement > 0) {
151 displacement -= G_STRUCT_OFFSET (MonoVTable, vtable);
152 g_assert (displacement >= 0);
153 displacement /= sizeof (gpointer);
155 /* Avoid loading metadata or creating a generic vtable if possible */
156 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, displacement);
157 if (addr && !vt->klass->valuetype) {
158 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
159 if (mono_aot_is_got_entry (code, (guint8*)vtable_slot) || mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot)) {
160 *vtable_slot = mono_get_addr_from_ftnptr (addr);
166 m = mono_class_get_vtable_entry (vt->klass, displacement);
167 /*g_print ("%s with disp %d: %s at %p\n", vt->klass->name, displacement, m->name, code);*/
169 /* We got here from an interface method: redirect to IMT handling */
170 m = MONO_FAKE_IMT_METHOD;
171 /*g_print ("vtable with disp %d at %p\n", displacement, code);*/
175 /* this is the IMT trampoline */
176 #ifdef MONO_ARCH_HAVE_IMT
177 if (m == MONO_FAKE_IMT_METHOD) {
178 MonoMethod *impl_method;
179 MonoGenericSharingContext *gsctx;
180 MonoObject *this_arg;
182 /* we get the interface method because mono_convert_imt_slot_to_vtable_slot ()
183 * needs the signature to be able to find the this argument
185 m = mono_arch_find_imt_method ((gpointer*)regs, code);
186 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
187 g_assert (vtable_slot);
189 gsctx = mono_get_generic_context_from_code (code);
190 this_arg = mono_arch_find_this_argument ((gpointer*)regs, m, gsctx);
192 if (this_arg->vtable->klass == mono_defaults.transparent_proxy_class) {
193 /* Use the slow path for now */
195 m = mono_object_get_virtual_method (this_arg, m);
197 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, (gpointer*)regs, code, m, &impl_method);
198 /* mono_convert_imt_slot_to_vtable_slot () also gives us the method that is supposed
199 * to be called, so we compile it and go ahead as usual.
201 /*g_print ("imt found method %p (%s) at %p\n", impl_method, impl_method->name, code);*/
202 if (m->is_inflated && ((MonoMethodInflated*)m)->context.method_inst) {
203 /* Generic virtual method */
206 m = mono_marshal_get_static_rgctx_invoke (m);
215 MonoGenericContext context = { NULL, NULL };
216 MonoMethod *declaring;
219 declaring = mono_method_get_declaring_generic_method (m);
223 if (m->klass->generic_class)
224 context.class_inst = m->klass->generic_class->context.class_inst;
226 g_assert (!m->klass->generic_container);
228 #ifdef MONO_ARCH_HAVE_IMT
229 generic_virtual = mono_arch_find_imt_method ((gpointer*)regs, code);
231 if (generic_virtual) {
232 g_assert (generic_virtual->is_inflated);
233 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
236 m = mono_class_inflate_generic_method (declaring, &context);
237 /* FIXME: only do this if the method is sharable */
238 m = mono_marshal_get_static_rgctx_invoke (m);
239 } else if ((context_used = mono_method_check_context_used (m))) {
240 MonoClass *klass = NULL;
241 MonoMethod *actual_method = NULL;
242 MonoVTable *vt = NULL;
243 MonoGenericInst *method_inst = NULL;
246 generic_shared = TRUE;
250 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
251 #ifdef MONO_ARCH_RGCTX_REG
252 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable ((gpointer*)regs, code);
254 klass = mrgctx->class_vtable->klass;
255 method_inst = mrgctx->method_inst;
257 g_assert_not_reached ();
259 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
260 #ifdef MONO_ARCH_RGCTX_REG
261 MonoVTable *vtable = mono_arch_find_static_call_vtable ((gpointer*)regs, code);
263 klass = vtable->klass;
265 g_assert_not_reached ();
268 #ifdef MONO_ARCH_HAVE_IMT
269 MonoObject *this_argument = mono_arch_find_this_argument ((gpointer*)regs, m,
270 mono_get_generic_context_from_code (code));
272 vt = this_argument->vtable;
273 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
275 g_assert (this_argument->vtable->klass->inited);
276 //mono_class_init (this_argument->vtable->klass);
279 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
285 g_assert (vtable_slot || klass);
288 int displacement = vtable_slot - ((gpointer*)vt);
290 g_assert_not_reached ();
292 g_assert (displacement > 0);
294 actual_method = vt->klass->vtable [displacement];
298 MonoGenericContext context = { NULL, NULL };
301 declaring = mono_method_get_declaring_generic_method (m);
305 if (klass->generic_class)
306 context.class_inst = klass->generic_class->context.class_inst;
307 else if (klass->generic_container)
308 context.class_inst = klass->generic_container->context.class_inst;
309 context.method_inst = method_inst;
311 actual_method = mono_class_inflate_generic_method (declaring, &context);
313 actual_method = mono_class_get_method_generic (klass, m);
317 g_assert (actual_method->klass == klass);
319 if (actual_method->is_inflated)
320 declaring = mono_method_get_declaring_generic_method (actual_method);
327 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
331 ji = mono_jit_info_table_find (mono_domain_get (), (char*)code);
335 /* Avoid recursion */
336 if (!(ji && ji->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED))
337 m = mono_marshal_get_synchronized_wrapper (m);
340 /* Calls made through delegates on platforms without delegate trampolines */
341 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
342 m = mono_marshal_get_static_rgctx_invoke (m);
344 addr = mono_compile_method (m);
347 mono_debugger_trampoline_compiled (m, addr);
349 if (generic_virtual) {
351 MonoVTable *vt = mono_arch_get_vcall_slot (code, (gpointer*)regs, &displacement);
353 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
354 g_assert (vtable_slot);
356 if (vt->klass->valuetype)
357 addr = get_unbox_trampoline (mono_get_generic_context_from_code (code), m, addr);
359 mono_method_add_generic_virtual_invocation (mono_domain_get (),
361 generic_virtual, addr);
366 /* the method was jumped to */
368 MonoDomain *domain = mono_domain_get ();
370 /* Patch the got entries pointing to this method */
372 * We do this here instead of in mono_codegen () to cover the case when m
373 * was loaded from an aot image.
375 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
378 mono_domain_lock (domain);
379 list = g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
381 for (tmp = list; tmp; tmp = tmp->next) {
382 gpointer *got_slot = tmp->data;
385 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
388 mono_domain_unlock (domain);
394 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
397 if (m->klass->valuetype)
398 addr = get_unbox_trampoline (mono_get_generic_context_from_code (code), m, addr);
400 g_assert (*vtable_slot);
402 if (!proxy && (mono_aot_is_got_entry (code, (guint8*)vtable_slot) || mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))) {
403 #ifdef MONO_ARCH_HAVE_IMT
404 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, (gpointer*)regs, code, m, NULL);
406 *vtable_slot = mono_get_addr_from_ftnptr (addr);
410 guint8 *plt_entry = mono_aot_get_plt_entry (code);
413 mono_arch_patch_plt_entry (plt_entry, addr);
414 } else if (!generic_shared || (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
415 mono_domain_lookup_shared_generic (mono_domain_get (), declaring)) {
416 if (generic_shared) {
417 if (m->wrapper_type != MONO_WRAPPER_NONE)
418 m = mono_marshal_method_from_wrapper (m);
419 g_assert (mono_method_is_generic_sharable_impl (m, FALSE));
422 /* Patch calling code */
427 mono_jit_info_table_find (mono_domain_get (), (char*)code);
428 MonoJitInfo *target_ji =
429 mono_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (addr));
431 if (mono_method_same_domain (ji, target_ji))
432 mono_arch_patch_callsite (ji->code_start, code, addr);
441 mono_generic_virtual_remoting_trampoline (gssize *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
443 MonoGenericContext context = { NULL, NULL };
444 MonoMethod *imt_method, *declaring;
447 g_assert (m->is_generic);
450 declaring = mono_method_get_declaring_generic_method (m);
454 if (m->klass->generic_class)
455 context.class_inst = m->klass->generic_class->context.class_inst;
457 g_assert (!m->klass->generic_container);
459 #ifdef MONO_ARCH_HAVE_IMT
460 imt_method = mono_arch_find_imt_method ((gpointer*)regs, code);
461 if (imt_method->is_inflated)
462 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
464 m = mono_class_inflate_generic_method (declaring, &context);
465 m = mono_marshal_get_remoting_invoke_with_check (m);
467 addr = mono_compile_method (m);
470 mono_debugger_trampoline_compiled (m, addr);
476 * mono_aot_trampoline:
478 * This trampoline handles calls made from AOT code. We try to bypass the
479 * normal JIT compilation logic to avoid loading the metadata for the method.
481 #ifdef MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN
483 mono_aot_trampoline (gssize *regs, guint8 *code, guint8 *token_info,
488 MonoMethod *method = NULL;
490 gpointer *vtable_slot;
491 gboolean is_got_entry;
494 image = *(gpointer*)(gpointer)token_info;
495 token_info += sizeof (gpointer);
496 token = *(guint32*)(gpointer)token_info;
498 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token);
500 method = mono_get_method (image, token, NULL);
503 /* Use the generic code */
504 return mono_magic_trampoline (regs, code, method, tramp);
507 vtable_slot = mono_arch_get_vcall_slot_addr (code, (gpointer*)regs);
508 g_assert (!vtable_slot);
510 /* This is a normal call through a PLT entry */
511 plt_entry = mono_aot_get_plt_entry (code);
512 g_assert (plt_entry);
514 mono_arch_patch_plt_entry (plt_entry, addr);
516 is_got_entry = FALSE;
519 * Since AOT code is only used in the root domain,
520 * mono_domain_get () != mono_get_root_domain () means the calling method
521 * is AppDomain:InvokeInDomain, so this is the same check as in
522 * mono_method_same_domain () but without loading the metadata for the method.
524 if ((is_got_entry && (mono_domain_get () == mono_get_root_domain ())) || mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot)) {
525 #ifdef MONO_ARCH_HAVE_IMT
527 method = mono_get_method (image, token, NULL);
528 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, (gpointer*)regs, code, method, NULL);
537 * mono_aot_plt_trampoline:
539 * This trampoline handles calls made from AOT code through the PLT table.
542 mono_aot_plt_trampoline (gssize *regs, guint8 *code, guint8 *aot_module,
545 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
547 return mono_aot_plt_resolve (aot_module, plt_info_offset, code);
552 * mono_class_init_trampoline:
554 * This method calls mono_runtime_class_init () to run the static constructor
555 * for the type, then patches the caller code so it is not called again.
558 mono_class_init_trampoline (gssize *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
560 guint8 *plt_entry = mono_aot_get_plt_entry (code);
562 mono_runtime_class_init (vtable);
565 mono_arch_nullify_plt_entry (plt_entry);
567 mono_arch_nullify_class_init_trampoline (code, regs);
572 * mono_generic_class_init_trampoline:
574 * This method calls mono_runtime_class_init () to run the static constructor
578 mono_generic_class_init_trampoline (gssize *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
580 g_assert (!vtable->initialized);
582 mono_runtime_class_init (vtable);
586 mono_rgctx_lazy_fetch_trampoline (gssize *regs, guint8 *code, gpointer data, guint8 *tramp)
588 #ifdef MONO_ARCH_VTABLE_REG
589 static gboolean inited = FALSE;
590 static int num_lookups = 0;
591 guint32 slot = GPOINTER_TO_UINT (data);
592 gpointer arg = (gpointer)(gssize)regs [MONO_ARCH_VTABLE_REG];
593 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
594 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
597 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
604 return mono_method_fill_runtime_generic_context (arg, index);
606 return mono_class_fill_runtime_generic_context (arg, index);
608 g_assert_not_reached ();
613 mono_monitor_enter_trampoline (gssize *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
615 mono_monitor_enter (obj);
619 mono_monitor_exit_trampoline (gssize *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
621 mono_monitor_exit (obj);
624 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
627 * mono_delegate_trampoline:
629 * This trampoline handles calls made to Delegate:Invoke ().
630 * This is called once the first time a delegate is invoked, so it must be fast.
633 mono_delegate_trampoline (gssize *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
635 MonoDomain *domain = mono_domain_get ();
636 MonoDelegate *delegate;
639 MonoMethod *method = NULL;
640 gboolean multicast, callvirt;
641 MonoMethod *invoke = tramp_data [0];
642 guint8 *impl_this = tramp_data [1];
643 guint8 *impl_nothis = tramp_data [2];
645 /* Obtain the delegate object according to the calling convention */
648 * Avoid calling mono_get_generic_context_from_code () now since it is expensive,
649 * get_this_arg_from_call will call it if needed.
651 delegate = mono_arch_get_this_arg_from_call (NULL, mono_method_signature (invoke), regs, code);
653 if (delegate->method) {
654 method = delegate->method;
657 * delegate->method_ptr == NULL means the delegate was initialized by
658 * mini_delegate_ctor, while != NULL means it is initialized by
659 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
660 * (ctor_with_method () does this, but it doesn't store the wrapper back into
663 if (delegate->target && delegate->target->vtable->klass == mono_defaults.transparent_proxy_class)
664 method = mono_marshal_get_remoting_invoke (method);
665 else if (mono_method_signature (method)->hasthis && method->klass->valuetype)
666 method = mono_marshal_get_unbox_wrapper (method);
668 ji = mono_jit_info_table_find (domain, mono_get_addr_from_ftnptr (delegate->method_ptr));
672 callvirt = !delegate->target && method && mono_method_signature (method)->hasthis;
674 if (method && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
675 method = mono_marshal_get_synchronized_wrapper (method);
677 if (method && mono_method_needs_static_rgctx_invoke (method, FALSE))
678 method = mono_marshal_get_static_rgctx_invoke (method);
681 * If the called address is a trampoline, replace it with the compiled method so
682 * further calls don't have to go through the trampoline.
684 if (method && !callvirt) {
685 /* Avoid the overhead of looking up an already compiled method if possible */
686 if (delegate->method_code && *delegate->method_code) {
687 delegate->method_ptr = *delegate->method_code;
689 delegate->method_ptr = mono_compile_method (method);
690 if (delegate->method_code)
691 *delegate->method_code = delegate->method_ptr;
692 mono_debugger_trampoline_compiled (method, delegate->method_ptr);
696 multicast = ((MonoMulticastDelegate*)delegate)->prev != NULL;
697 if (!multicast && !callvirt) {
698 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
699 /* Closed static delegate */
702 code = delegate->target ? impl_this : impl_nothis;
705 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
710 /* The general, unoptimized case */
711 m = mono_marshal_get_delegate_invoke (invoke, delegate);
712 code = mono_compile_method (m);
713 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
714 mono_debugger_trampoline_compiled (m, delegate->invoke_impl);
722 * mono_get_trampoline_func:
724 * Return the C function which needs to be called by the generic trampoline of type
728 mono_get_trampoline_func (MonoTrampolineType tramp_type)
730 switch (tramp_type) {
731 case MONO_TRAMPOLINE_JIT:
732 case MONO_TRAMPOLINE_JUMP:
733 return mono_magic_trampoline;
734 case MONO_TRAMPOLINE_CLASS_INIT:
735 return mono_class_init_trampoline;
736 case MONO_TRAMPOLINE_GENERIC_CLASS_INIT:
737 return mono_generic_class_init_trampoline;
738 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
739 return mono_rgctx_lazy_fetch_trampoline;
740 #ifdef MONO_ARCH_AOT_SUPPORTED
741 case MONO_TRAMPOLINE_AOT:
742 return mono_aot_trampoline;
743 case MONO_TRAMPOLINE_AOT_PLT:
744 return mono_aot_plt_trampoline;
746 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
747 case MONO_TRAMPOLINE_DELEGATE:
748 return mono_delegate_trampoline;
750 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
751 return mono_altstack_restore_prot;
752 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
753 return mono_generic_virtual_remoting_trampoline;
754 case MONO_TRAMPOLINE_MONITOR_ENTER:
755 return mono_monitor_enter_trampoline;
756 case MONO_TRAMPOLINE_MONITOR_EXIT:
757 return mono_monitor_exit_trampoline;
759 g_assert_not_reached ();
765 mono_trampolines_init (void)
767 InitializeCriticalSection (&trampolines_mutex);
772 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_JIT);
773 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_JUMP);
774 mono_trampoline_code [MONO_TRAMPOLINE_CLASS_INIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_CLASS_INIT);
775 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_CLASS_INIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_GENERIC_CLASS_INIT);
776 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
777 #ifdef MONO_ARCH_AOT_SUPPORTED
778 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_AOT);
779 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
781 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
782 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
784 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
785 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
786 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_ENTER] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_MONITOR_ENTER);
787 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_EXIT] = mono_arch_create_trampoline_code (MONO_TRAMPOLINE_MONITOR_EXIT);
791 mono_trampolines_cleanup (void)
793 if (class_init_hash_addr)
794 g_hash_table_destroy (class_init_hash_addr);
795 if (delegate_trampoline_hash_addr)
796 g_hash_table_destroy (delegate_trampoline_hash_addr);
798 DeleteCriticalSection (&trampolines_mutex);
802 mono_get_trampoline_code (MonoTrampolineType tramp_type)
804 g_assert (mono_trampoline_code [tramp_type]);
806 return mono_trampoline_code [tramp_type];
810 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
813 return mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, code_len);
815 return mono_arch_create_specific_trampoline (arg1, tramp_type, domain, code_len);
819 mono_create_class_init_trampoline (MonoVTable *vtable)
822 MonoDomain *domain = vtable->domain;
824 g_assert (!vtable->klass->generic_container);
826 /* previously created trampoline code */
827 mono_domain_lock (domain);
829 g_hash_table_lookup (domain_jit_info (domain)->class_init_trampoline_hash,
831 mono_domain_unlock (domain);
835 code = mono_create_specific_trampoline (vtable, MONO_TRAMPOLINE_CLASS_INIT, domain, NULL);
837 ptr = mono_create_ftnptr (domain, code);
839 /* store trampoline address */
840 mono_domain_lock (domain);
841 g_hash_table_insert (domain_jit_info (domain)->class_init_trampoline_hash,
843 mono_domain_unlock (domain);
845 mono_trampolines_lock ();
846 if (!class_init_hash_addr)
847 class_init_hash_addr = g_hash_table_new (NULL, NULL);
848 g_hash_table_insert (class_init_hash_addr, ptr, vtable);
849 mono_trampolines_unlock ();
855 mono_create_generic_class_init_trampoline (void)
857 #ifdef MONO_ARCH_VTABLE_REG
858 static gpointer code;
860 mono_trampolines_lock ();
864 code = mono_aot_get_named_code ("generic_class_init_trampoline");
866 code = mono_arch_create_generic_class_init_trampoline ();
869 mono_trampolines_unlock ();
873 g_assert_not_reached ();
878 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper)
882 guint32 code_size = 0;
884 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
886 * We cannot recover the correct type of a shared generic
887 * method from its native code address, so we use the
888 * trampoline instead.
890 if (code && !ji->has_generic_jit_info)
893 mono_domain_lock (domain);
894 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
895 mono_domain_unlock (domain);
899 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
900 g_assert (code_size);
902 ji = mono_domain_alloc0 (domain, sizeof (MonoJitInfo));
903 ji->code_start = code;
904 ji->code_size = code_size;
908 * mono_delegate_ctor needs to find the method metadata from the
909 * trampoline address, so we save it here.
912 mono_jit_info_table_add (domain, ji);
914 mono_domain_lock (domain);
915 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
916 mono_domain_unlock (domain);
918 return ji->code_start;
922 mono_create_jit_trampoline_in_domain (MonoDomain *domain, MonoMethod *method)
927 /* Avoid creating trampolines if possible */
928 gpointer code = mono_jit_find_compiled_method (domain, method);
934 mono_domain_lock (domain);
935 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
936 mono_domain_unlock (domain);
940 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
942 mono_domain_lock (domain);
943 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
944 mono_domain_unlock (domain);
946 mono_jit_stats.method_trampolines++;
952 mono_create_jit_trampoline (MonoMethod *method)
954 return mono_create_jit_trampoline_in_domain (mono_domain_get (), method);
957 #ifdef MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN
959 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
963 MonoDomain *domain = mono_domain_get ();
966 buf = start = mono_domain_code_reserve (domain, 2 * sizeof (gpointer));
968 *(gpointer*)(gpointer)buf = image;
969 buf += sizeof (gpointer);
970 *(guint32*)(gpointer)buf = token;
972 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
974 mono_jit_stats.method_trampolines++;
981 mono_create_delegate_trampoline (MonoClass *klass)
983 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
984 MonoDomain *domain = mono_domain_get ();
986 guint32 code_size = 0;
987 gpointer *tramp_data;
990 mono_domain_lock (domain);
991 ptr = g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, klass);
992 mono_domain_unlock (domain);
996 // Precompute the delegate invoke impl and pass it to the delegate trampoline
997 invoke = mono_get_delegate_invoke (klass);
1000 tramp_data = mono_domain_alloc (domain, sizeof (gpointer) * 3);
1001 tramp_data [0] = invoke;
1002 if (mono_aot_only) {
1003 tramp_data [1] = NULL;
1004 tramp_data [2] = NULL;
1006 tramp_data [1] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1007 tramp_data [2] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1010 ptr = mono_create_specific_trampoline (tramp_data, MONO_TRAMPOLINE_DELEGATE, mono_domain_get (), &code_size);
1011 g_assert (code_size);
1013 /* store trampoline address */
1014 mono_domain_lock (domain);
1015 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash,
1017 mono_domain_unlock (domain);
1019 mono_trampolines_lock ();
1020 if (!delegate_trampoline_hash_addr)
1021 delegate_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1022 g_hash_table_insert (delegate_trampoline_hash_addr, ptr, klass);
1023 mono_trampolines_unlock ();
1032 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1034 static gboolean inited = FALSE;
1035 static int num_trampolines = 0;
1037 gpointer tramp, ptr;
1040 return mono_aot_get_lazy_fetch_trampoline (offset);
1042 mono_trampolines_lock ();
1043 if (rgctx_lazy_fetch_trampoline_hash)
1044 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1047 mono_trampolines_unlock ();
1051 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset);
1052 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1054 mono_trampolines_lock ();
1055 if (!rgctx_lazy_fetch_trampoline_hash) {
1056 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1057 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1059 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1060 g_assert (offset != -1);
1061 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1062 mono_trampolines_unlock ();
1065 mono_counters_register ("RGCTX num lazy fetch trampolines",
1066 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1075 mono_create_monitor_enter_trampoline (void)
1077 static gpointer code;
1079 if (mono_aot_only) {
1081 code = mono_aot_get_named_code ("monitor_enter_trampoline");
1085 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1086 mono_trampolines_lock ();
1089 code = mono_arch_create_monitor_enter_trampoline ();
1091 mono_trampolines_unlock ();
1094 g_assert_not_reached ();
1101 mono_create_monitor_exit_trampoline (void)
1103 static gpointer code;
1105 if (mono_aot_only) {
1107 code = mono_aot_get_named_code ("monitor_exit_trampoline");
1111 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1112 mono_trampolines_lock ();
1115 code = mono_arch_create_monitor_exit_trampoline ();
1117 mono_trampolines_unlock ();
1120 g_assert_not_reached ();
1126 mono_find_class_init_trampoline_by_addr (gconstpointer addr)
1130 mono_trampolines_lock ();
1131 if (class_init_hash_addr)
1132 res = g_hash_table_lookup (class_init_hash_addr, addr);
1135 mono_trampolines_unlock ();
1140 mono_find_delegate_trampoline_by_addr (gconstpointer addr)
1144 mono_trampolines_lock ();
1145 if (delegate_trampoline_hash_addr)
1146 res = g_hash_table_lookup (delegate_trampoline_hash_addr, addr);
1149 mono_trampolines_unlock ();
1154 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1158 mono_trampolines_lock ();
1159 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1160 /* We store the real offset + 1 so we can detect when the lookup fails */
1161 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1169 mono_trampolines_unlock ();