2 * (C) 2003 Ximian, Inc.
3 * (C) 2003-2011 Novell, Inc.
4 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
9 #include <mono/metadata/appdomain.h>
10 #include <mono/metadata/metadata-internals.h>
11 #include <mono/metadata/marshal.h>
12 #include <mono/metadata/tabledefs.h>
13 #include <mono/utils/mono-counters.h>
14 #include <mono/utils/mono-error-internals.h>
15 #include <mono/utils/mono-membar.h>
20 * Address of the trampoline code. This is used by the debugger to check
21 * whether a method is a trampoline.
23 guint8* mono_trampoline_code [MONO_TRAMPOLINE_NUM];
25 static GHashTable *class_init_hash_addr = NULL;
26 static GHashTable *rgctx_lazy_fetch_trampoline_hash = NULL;
27 static GHashTable *rgctx_lazy_fetch_trampoline_hash_addr = NULL;
28 static guint32 trampoline_calls, jit_trampolines, unbox_trampolines, static_rgctx_trampolines;
30 #define mono_trampolines_lock() EnterCriticalSection (&trampolines_mutex)
31 #define mono_trampolines_unlock() LeaveCriticalSection (&trampolines_mutex)
32 static CRITICAL_SECTION trampolines_mutex;
34 #ifdef MONO_ARCH_GSHARED_SUPPORTED
42 rgctx_tramp_info_equal (gconstpointer ka, gconstpointer kb)
44 const RgctxTrampInfo *i1 = ka;
45 const RgctxTrampInfo *i2 = kb;
47 if (i1->m == i2->m && i1->addr == i2->addr)
54 rgctx_tramp_info_hash (gconstpointer data)
56 const RgctxTrampInfo *info = data;
58 return GPOINTER_TO_UINT (info->m) ^ GPOINTER_TO_UINT (info->addr);
62 * mono_create_static_rgctx_trampoline:
64 * Return a static rgctx trampoline for M which branches to ADDR which should
65 * point to the compiled code of M.
67 * Static rgctx trampolines are used when a shared generic method which doesn't
68 * have a this argument is called indirectly, ie. from code which can't pass in
69 * the rgctx argument. The trampoline sets the rgctx argument and jumps to the
70 * methods code. These trampolines are similar to the unbox trampolines, they
71 * perform the same task as the static rgctx wrappers, but they are smaller/faster,
72 * and can be made to work with full AOT.
73 * On PPC addr should be an ftnptr and the return value is an ftnptr too.
76 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
81 RgctxTrampInfo tmp_info;
84 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
85 g_assert (((gpointer*)addr) [2] == 0);
88 ctx = mini_method_get_rgctx (m);
90 domain = mono_domain_get ();
93 * In the AOT case, addr might point to either the method, or to an unbox trampoline,
94 * so make the hash keyed on the m+addr pair.
96 mono_domain_lock (domain);
97 if (!domain_jit_info (domain)->static_rgctx_trampoline_hash)
98 domain_jit_info (domain)->static_rgctx_trampoline_hash = g_hash_table_new (rgctx_tramp_info_hash, rgctx_tramp_info_equal);
100 tmp_info.addr = addr;
101 res = g_hash_table_lookup (domain_jit_info (domain)->static_rgctx_trampoline_hash,
103 mono_domain_unlock (domain);
108 res = mono_aot_get_static_rgctx_trampoline (ctx, addr);
110 res = mono_arch_get_static_rgctx_trampoline (m, ctx, addr);
112 mono_domain_lock (domain);
113 /* Duplicates inserted while we didn't hold the lock are OK */
114 info = mono_domain_alloc (domain, sizeof (RgctxTrampInfo));
117 g_hash_table_insert (domain_jit_info (domain)->static_rgctx_trampoline_hash, info, res);
118 mono_domain_unlock (domain);
120 static_rgctx_trampolines ++;
126 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
129 * This shouldn't happen as all arches which support generic sharing support
130 * static rgctx trampolines as well.
132 g_assert_not_reached ();
136 #ifdef MONO_ARCH_HAVE_IMT
139 * Either IMPL_METHOD or AOT_ADDR will be set on return.
144 * This works against problems when compiling with gcc 4.6 on arm. The 'then' part of
145 * this line gets executed, even when the condition is false:
146 * if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
147 * *need_rgctx_tramp = TRUE;
149 __attribute__ ((noinline))
151 mono_convert_imt_slot_to_vtable_slot (gpointer* slot, mgreg_t *regs, guint8 *code, MonoMethod *method, gboolean lookup_aot, MonoMethod **impl_method, gboolean *need_rgctx_tramp, gboolean *variance_used, gpointer *aot_addr)
153 MonoObject *this_argument = mono_arch_get_this_arg_from_call (regs, code);
154 MonoVTable *vt = this_argument->vtable;
155 int displacement = slot - ((gpointer*)vt);
157 if (displacement > 0) {
158 /* slot is in the vtable, not in the IMT */
160 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p is in the vtable, not in the IMT\n", slot);
164 MonoMethod *imt_method = mono_arch_find_imt_method (regs, code);
166 int interface_offset;
167 int imt_slot = MONO_IMT_SIZE + displacement;
169 /*This has to be variance aware since imt_method can be from an interface that vt->klass doesn't directly implement*/
170 interface_offset = mono_class_interface_offset_with_variance (vt->klass, imt_method->klass, variance_used);
172 if (interface_offset < 0) {
173 g_error ("%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));
175 mono_vtable_build_imt_slot (vt, mono_method_get_imt_slot (imt_method));
177 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
178 MonoGenericContext context = { NULL, NULL };
181 * Generic virtual method, imt_method contains the inflated interface
182 * method, need to get the inflated impl method.
184 /* imt_method->slot might not be set */
185 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_declaring_generic_method (imt_method)->slot);
187 if (impl->klass->generic_class)
188 context.class_inst = impl->klass->generic_class->context.class_inst;
189 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
190 impl = mono_class_inflate_generic_method (impl, &context);
192 /* Avoid loading metadata or creating a generic vtable if possible */
193 if (lookup_aot && !vt->klass->valuetype)
194 *aot_addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, interface_offset + mono_method_get_vtable_slot (imt_method));
200 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_vtable_slot (imt_method));
203 if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
204 *need_rgctx_tramp = TRUE;
205 if (impl && impl->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
206 WrapperInfo *info = mono_marshal_get_wrapper_info (impl);
208 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
209 // FIXME: This needs a gsharedvt-out trampoline, since the caller uses the gsharedvt calling conv, but the
210 // wrapper is a normal non-generic method.
211 *need_rgctx_tramp = TRUE;
212 //g_assert_not_reached ();
218 printf ("mono_convert_imt_slot_to_vtable_slot: method = %s.%s.%s, imt_method = %s.%s.%s\n",
219 method->klass->name_space, method->klass->name, method->name,
220 imt_method->klass->name_space, imt_method->klass->name, imt_method->name);
223 g_assert (imt_slot < MONO_IMT_SIZE);
224 if (vt->imt_collisions_bitmap & (1 << imt_slot)) {
225 int slot = mono_method_get_vtable_index (imt_method);
227 gpointer *vtable_slot;
229 g_assert (slot != -1);
230 vtable_offset = interface_offset + slot;
231 vtable_slot = & (vt->vtable [vtable_offset]);
233 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);
238 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, but not colliding\n", slot, imt_slot);
247 * This is a super-ugly hack to fix bug #616463.
249 * The problem is that we don't always set is_generic for generic
250 * method definitions. See the comment at the end of
251 * mono_class_inflate_generic_method_full_checked() in class.c.
254 is_generic_method_definition (MonoMethod *m)
256 MonoGenericContext *context;
262 context = mono_method_get_context (m);
263 if (!context->method_inst)
265 if (context->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)m)->declaring)->context.method_inst)
271 mini_jit_info_is_gsharedvt (MonoJitInfo *ji)
273 if (ji && ji->has_generic_jit_info && (mono_jit_info_get_generic_sharing_context (ji)->var_is_vt ||
274 mono_jit_info_get_generic_sharing_context (ji)->mvar_is_vt))
281 * mini_add_method_trampoline:
283 * Add static rgctx/gsharedvt_in/unbox trampolines to M/COMPILED_METHOD if needed. Return the trampoline address, or
284 * COMPILED_METHOD if no trampoline is needed.
285 * ORIG_METHOD is the method the caller originally called i.e. an iface method, or NULL.
288 mini_add_method_trampoline (MonoMethod *orig_method, MonoMethod *m, gpointer compiled_method, gboolean add_static_rgctx_tramp, gboolean add_unbox_tramp)
290 gpointer addr = compiled_method;
291 gboolean callee_gsharedvt, callee_array_helper;
292 MonoMethod *jmethod = NULL;
294 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
296 // FIXME: This loads information from AOT
297 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
299 callee_array_helper = FALSE;
300 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
301 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
304 * generic array helpers.
305 * Have to replace the wrappers with the original generic instances.
307 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
308 callee_array_helper = TRUE;
309 m = info->d.generic_array_helper.method;
311 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
312 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
314 /* Same for synchronized inner wrappers */
315 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
316 m = info->d.synchronized_inner.method;
323 if (callee_gsharedvt)
324 g_assert (m->is_inflated);
326 addr = compiled_method;
328 if (add_unbox_tramp) {
330 * The unbox trampolines call the method directly, so need to add
331 * an rgctx tramp before them.
334 addr = mono_aot_get_unbox_trampoline (m);
336 unbox_trampolines ++;
337 addr = mono_arch_get_unbox_trampoline (m, addr);
342 jmethod = jinfo_get_method (ji);
343 if (callee_gsharedvt && mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod))) {
344 MonoGenericSharingContext *gsctx;
345 MonoMethodSignature *sig, *gsig;
347 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
349 /* Call from normal/gshared code to gsharedvt code with variable signature */
350 gsctx = mono_jit_info_get_generic_sharing_context (ji);
352 sig = mono_method_signature (m);
353 gsig = mono_method_signature (jmethod);
355 addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, gsctx, -1, FALSE);
357 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
360 if (add_static_rgctx_tramp && !callee_array_helper)
361 addr = mono_create_static_rgctx_trampoline (m, addr);
367 * common_call_trampoline:
369 * The code to handle normal, virtual, and interface method calls and jumps, both
370 * from JITted and LLVM compiled code.
373 common_call_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8* tramp, MonoVTable *vt, gpointer *vtable_slot, gboolean need_rgctx_tramp)
375 gpointer addr, compiled_method;
376 gboolean generic_shared = FALSE;
377 gboolean need_unbox_tramp = FALSE;
378 MonoMethod *declaring = NULL;
379 MonoMethod *generic_virtual = NULL, *variant_iface = NULL, *orig_method = NULL;
381 gboolean virtual, variance_used = FALSE;
382 gpointer *orig_vtable_slot, *vtable_slot_to_patch = NULL;
383 MonoJitInfo *ji = NULL;
385 virtual = (gpointer)vtable_slot > (gpointer)vt;
387 orig_vtable_slot = vtable_slot;
388 vtable_slot_to_patch = vtable_slot;
390 #ifdef MONO_ARCH_HAVE_IMT
392 if (vt && (gpointer)vtable_slot < (gpointer)vt) {
393 MonoMethod *impl_method = NULL;
394 MonoObject *this_arg;
396 /* we get the interface method because mono_convert_imt_slot_to_vtable_slot ()
397 * needs the signature to be able to find the this argument
399 m = mono_arch_find_imt_method (regs, code);
400 vtable_slot = orig_vtable_slot;
401 g_assert (vtable_slot);
405 this_arg = mono_arch_get_this_arg_from_call (regs, code);
407 if (mono_object_is_transparent_proxy (this_arg)) {
408 /* Use the slow path for now */
409 m = mono_object_get_virtual_method (this_arg, m);
410 vtable_slot_to_patch = NULL;
414 if (m->is_inflated && ((MonoMethodInflated*)m)->context.method_inst) {
415 /* Generic virtual method */
417 need_rgctx_tramp = TRUE;
418 } else if (variance_used && mono_class_has_variant_generic_params (m->klass)) {
423 /* We can only use the AOT compiled code if we don't require further processing */
424 lookup_aot = !generic_virtual & !variant_iface;
425 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, regs, code, m, lookup_aot, &impl_method, &need_rgctx_tramp, &variance_used, &addr);
426 /* This is the vcall slot which gets called through the IMT thunk */
427 vtable_slot_to_patch = vtable_slot;
428 /* mono_convert_imt_slot_to_vtable_slot () also gives us the method that is supposed
429 * to be called, so we compile it and go ahead as usual.
431 /*g_print ("imt found method %p (%s) at %p\n", impl_method, impl_method->name, code);*/
435 * We found AOT compiled code for the method, skip the rest.
437 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
440 return mono_create_ftnptr (mono_domain_get (), addr);
449 * The virtual check is needed because is_generic_method_definition (m) could
450 * return TRUE for methods used in IMT calls too.
452 if (virtual && is_generic_method_definition (m)) {
453 MonoGenericContext context = { NULL, NULL };
454 MonoMethod *declaring;
457 declaring = mono_method_get_declaring_generic_method (m);
461 if (m->klass->generic_class)
462 context.class_inst = m->klass->generic_class->context.class_inst;
464 g_assert (!m->klass->generic_container);
466 #ifdef MONO_ARCH_HAVE_IMT
467 generic_virtual = mono_arch_find_imt_method (regs, code);
469 if (generic_virtual) {
470 g_assert (generic_virtual->is_inflated);
471 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
474 m = mono_class_inflate_generic_method (declaring, &context);
475 /* FIXME: only do this if the method is sharable */
476 need_rgctx_tramp = TRUE;
477 } else if ((context_used = mono_method_check_context_used (m))) {
478 MonoClass *klass = NULL;
479 MonoMethod *actual_method = NULL;
480 MonoVTable *vt = NULL;
481 MonoGenericInst *method_inst = NULL;
484 generic_shared = TRUE;
488 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
489 #ifdef MONO_ARCH_RGCTX_REG
490 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
492 klass = mrgctx->class_vtable->klass;
493 method_inst = mrgctx->method_inst;
495 g_assert_not_reached ();
497 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
498 #ifdef MONO_ARCH_RGCTX_REG
499 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
501 klass = vtable->klass;
503 g_assert_not_reached ();
506 #ifdef MONO_ARCH_HAVE_IMT
507 MonoObject *this_argument = mono_arch_get_this_arg_from_call (regs, code);
509 vt = this_argument->vtable;
510 vtable_slot = orig_vtable_slot;
512 g_assert (this_argument->vtable->klass->inited);
513 //mono_class_init (this_argument->vtable->klass);
516 mono_class_setup_supertypes (this_argument->vtable->klass);
517 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
524 g_assert (vtable_slot || klass);
527 int displacement = vtable_slot - ((gpointer*)vt);
529 g_assert_not_reached ();
531 g_assert (displacement > 0);
533 actual_method = vt->klass->vtable [displacement];
536 if (method_inst || m->wrapper_type) {
537 MonoGenericContext context = { NULL, NULL };
540 declaring = mono_method_get_declaring_generic_method (m);
544 if (klass->generic_class)
545 context.class_inst = klass->generic_class->context.class_inst;
546 else if (klass->generic_container)
547 context.class_inst = klass->generic_container->context.class_inst;
548 context.method_inst = method_inst;
550 actual_method = mono_class_inflate_generic_method (declaring, &context);
552 actual_method = mono_class_get_method_generic (klass, m);
556 g_assert (actual_method);
557 g_assert (actual_method->klass == klass);
559 if (actual_method->is_inflated)
560 declaring = mono_method_get_declaring_generic_method (actual_method);
567 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
568 m = mono_marshal_get_synchronized_wrapper (m);
569 need_rgctx_tramp = FALSE;
572 /* Calls made through delegates on platforms without delegate trampolines */
573 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
574 need_rgctx_tramp = TRUE;
576 addr = compiled_method = mono_compile_method (m);
579 if (generic_virtual || variant_iface) {
580 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
581 need_unbox_tramp = TRUE;
582 } else if (orig_vtable_slot) {
583 if (m->klass->valuetype)
584 need_unbox_tramp = TRUE;
587 addr = mini_add_method_trampoline (orig_method, m, compiled_method, need_rgctx_tramp, need_unbox_tramp);
589 if (generic_virtual || variant_iface) {
590 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
592 vtable_slot = orig_vtable_slot;
593 g_assert (vtable_slot);
595 mono_method_add_generic_virtual_invocation (mono_domain_get (),
602 /* the method was jumped to */
604 MonoDomain *domain = mono_domain_get ();
606 /* Patch the got entries pointing to this method */
608 * We do this here instead of in mono_codegen () to cover the case when m
609 * was loaded from an aot image.
611 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
614 mono_domain_lock (domain);
615 list = g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
617 for (tmp = list; tmp; tmp = tmp->next) {
618 gpointer *got_slot = tmp->data;
621 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
624 mono_domain_unlock (domain);
630 vtable_slot = orig_vtable_slot;
633 if (vtable_slot_to_patch && (mono_aot_is_got_entry (code, (guint8*)vtable_slot_to_patch) || mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot_to_patch))) {
634 g_assert (*vtable_slot_to_patch);
635 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
639 guint8 *plt_entry = mono_aot_get_plt_entry (code);
640 gboolean no_patch = FALSE;
641 MonoJitInfo *target_ji;
644 if (generic_shared) {
646 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
648 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
650 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
655 mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
657 if (generic_shared) {
658 if (m->wrapper_type != MONO_WRAPPER_NONE)
659 m = mono_marshal_method_from_wrapper (m);
660 //g_assert (mono_method_is_generic_sharable (m, FALSE));
663 /* Patch calling code */
665 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
667 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
669 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
671 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
672 * generic sharing fails.
673 * FIXME: Performance problem.
678 if (!no_patch && mono_method_same_domain (ji, target_ji))
679 mono_arch_patch_callsite (ji->code_start, code, addr);
687 * mono_magic_trampoline:
689 * This trampoline handles normal calls from JITted code.
692 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
696 return common_call_trampoline (regs, code, arg, tramp, NULL, NULL, FALSE);
700 * mono_vcall_trampoline:
702 * This trampoline handles virtual calls.
705 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
709 gpointer *vtable_slot;
711 gboolean need_rgctx_tramp = FALSE;
717 * We need to obtain the following pieces of information:
718 * - the method which needs to be compiled.
720 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
721 * the other two can be computed from the vtable + the slot index.
723 #ifndef MONO_ARCH_THIS_AS_FIRST_ARG
724 /* All architectures should support this */
725 g_assert_not_reached ();
729 * Obtain the vtable from the 'this' arg.
731 this = mono_arch_get_this_arg_from_call (regs, code);
737 /* Normal virtual call */
738 vtable_slot = &(vt->vtable [slot]);
740 /* Avoid loading metadata or creating a generic vtable if possible */
741 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot);
742 if (addr && !vt->klass->valuetype) {
743 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
746 return mono_create_ftnptr (mono_domain_get (), addr);
751 * is_generic_method_definition() above) also
752 * goes away if we do a
753 * mono_class_setup_vtable (vt->klass) here,
754 * because we then inflate the method
755 * correctly, put it in the cache, and the
756 * "wrong" inflation invocation still looks up
757 * the correctly inflated method.
759 * The hack above seems more stable and
762 m = mono_class_get_vtable_entry (vt->klass, slot);
764 need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (m, 0);
767 vtable_slot = &(((gpointer*)vt) [slot]);
770 need_rgctx_tramp = FALSE;
773 return common_call_trampoline (regs, code, m, tramp, vt, vtable_slot, need_rgctx_tramp);
776 #ifndef DISABLE_REMOTING
778 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
780 MonoGenericContext context = { NULL, NULL };
781 MonoMethod *imt_method, *declaring;
786 g_assert (m->is_generic);
789 declaring = mono_method_get_declaring_generic_method (m);
793 if (m->klass->generic_class)
794 context.class_inst = m->klass->generic_class->context.class_inst;
796 g_assert (!m->klass->generic_container);
798 #ifdef MONO_ARCH_HAVE_IMT
799 imt_method = mono_arch_find_imt_method (regs, code);
800 if (imt_method->is_inflated)
801 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
803 m = mono_class_inflate_generic_method (declaring, &context);
804 m = mono_marshal_get_remoting_invoke_with_check (m);
806 addr = mono_compile_method (m);
814 * mono_aot_trampoline:
816 * This trampoline handles calls made from AOT code. We try to bypass the
817 * normal JIT compilation logic to avoid loading the metadata for the method.
819 #ifdef MONO_ARCH_AOT_SUPPORTED
821 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
826 MonoMethod *method = NULL;
832 image = *(gpointer*)(gpointer)token_info;
833 token_info += sizeof (gpointer);
834 token = *(guint32*)(gpointer)token_info;
836 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token);
838 method = mono_get_method (image, token, NULL);
841 /* Use the generic code */
842 return mono_magic_trampoline (regs, code, method, tramp);
845 addr = mono_create_ftnptr (mono_domain_get (), addr);
847 /* This is a normal call through a PLT entry */
848 plt_entry = mono_aot_get_plt_entry (code);
849 g_assert (plt_entry);
851 mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
857 * mono_aot_plt_trampoline:
859 * This trampoline handles calls made from AOT code through the PLT table.
862 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
865 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
870 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code);
872 if (mono_loader_get_last_error ())
873 mono_raise_exception (mono_loader_error_prepare_exception (mono_loader_get_last_error ()));
874 // FIXME: Error handling (how ?)
883 * mono_class_init_trampoline:
885 * This method calls mono_runtime_class_init () to run the static constructor
886 * for the type, then patches the caller code so it is not called again.
889 mono_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
891 guint8 *plt_entry = mono_aot_get_plt_entry (code);
895 mono_runtime_class_init (vtable);
898 mono_arch_nullify_plt_entry (plt_entry, regs);
900 mono_arch_nullify_class_init_trampoline (code, regs);
905 * mono_generic_class_init_trampoline:
907 * This method calls mono_runtime_class_init () to run the static constructor
911 mono_generic_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
915 mono_runtime_class_init (vtable);
919 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
921 #ifdef MONO_ARCH_VTABLE_REG
922 static gboolean inited = FALSE;
923 static int num_lookups = 0;
924 guint32 slot = GPOINTER_TO_UINT (data);
925 mgreg_t *r = (mgreg_t*)regs;
926 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
927 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
928 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
933 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
940 return mono_method_fill_runtime_generic_context (arg, code, index);
942 return mono_class_fill_runtime_generic_context (arg, code, index);
944 g_assert_not_reached ();
949 mono_monitor_enter_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
951 mono_monitor_enter (obj);
955 mono_monitor_exit_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
957 mono_monitor_exit (obj);
960 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
963 * mono_delegate_trampoline:
965 * This trampoline handles calls made to Delegate:Invoke ().
966 * This is called once the first time a delegate is invoked, so it must be fast.
969 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
971 MonoDomain *domain = mono_domain_get ();
972 MonoDelegate *delegate;
975 MonoMethod *method = NULL;
976 gboolean multicast, callvirt = FALSE;
977 gboolean need_rgctx_tramp = FALSE;
978 gboolean need_unbox_tramp = FALSE;
979 gboolean enable_caching = TRUE;
980 MonoMethod *invoke = tramp_data [0];
981 guint8 *impl_this = tramp_data [1];
982 guint8 *impl_nothis = tramp_data [2];
984 MonoMethodSignature *sig;
985 gpointer addr, compiled_method;
989 /* Obtain the delegate object according to the calling convention */
990 delegate = mono_arch_get_this_arg_from_call (regs, code);
992 if (delegate->method) {
993 method = delegate->method;
996 * delegate->method_ptr == NULL means the delegate was initialized by
997 * mini_delegate_ctor, while != NULL means it is initialized by
998 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
999 * (ctor_with_method () does this, but it doesn't store the wrapper back into
1000 * delegate->method).
1002 #ifndef DISABLE_REMOTING
1003 if (delegate->target && delegate->target->vtable->klass == mono_defaults.transparent_proxy_class) {
1005 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_class_get_com_object_class () &&
1006 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1008 method = mono_marshal_get_remoting_invoke (method);
1012 mono_error_init (&err);
1013 sig = mono_method_signature_checked (method, &err);
1015 mono_error_raise_exception (&err);
1017 if (sig->hasthis && method->klass->valuetype) {
1019 need_unbox_tramp = TRUE;
1021 method = mono_marshal_get_unbox_wrapper (method);
1025 ji = mono_jit_info_table_find (domain, mono_get_addr_from_ftnptr (delegate->method_ptr));
1027 method = jinfo_get_method (ji);
1031 mono_error_init (&err);
1032 sig = mono_method_signature_checked (method, &err);
1034 mono_error_raise_exception (&err);
1036 callvirt = !delegate->target && sig->hasthis;
1037 if (delegate->target &&
1038 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1039 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1040 method->klass->flags & TYPE_ATTRIBUTE_ABSTRACT) {
1041 method = mono_object_get_virtual_method (delegate->target, method);
1042 enable_caching = FALSE;
1046 if (method && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1047 method = mono_marshal_get_synchronized_wrapper (method);
1049 if (method && mono_method_needs_static_rgctx_invoke (method, FALSE))
1050 need_rgctx_tramp = TRUE;
1053 * If the called address is a trampoline, replace it with the compiled method so
1054 * further calls don't have to go through the trampoline.
1056 if (method && !callvirt) {
1057 /* Avoid the overhead of looking up an already compiled method if possible */
1058 if (enable_caching && delegate->method_code && *delegate->method_code) {
1059 delegate->method_ptr = *delegate->method_code;
1061 compiled_method = addr = mono_compile_method (method);
1062 addr = mini_add_method_trampoline (NULL, method, compiled_method, need_rgctx_tramp, need_unbox_tramp);
1063 delegate->method_ptr = addr;
1064 if (enable_caching && delegate->method_code)
1065 *delegate->method_code = delegate->method_ptr;
1068 if (need_rgctx_tramp)
1069 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1072 multicast = ((MonoMulticastDelegate*)delegate)->prev != NULL;
1073 if (!multicast && !callvirt) {
1074 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1075 /* Closed static delegate */
1078 code = delegate->target ? impl_this : impl_nothis;
1081 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1086 /* The general, unoptimized case */
1087 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1088 code = mono_compile_method (m);
1089 code = mini_add_method_trampoline (NULL, m, code, mono_method_needs_static_rgctx_invoke (m, FALSE), FALSE);
1090 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1097 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1099 mono_handler_block_guard_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
1103 MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
1104 gpointer resume_ip = jit_tls->handler_block_return_address;
1106 memcpy (&ctx, &jit_tls->handler_block_context, sizeof (MonoContext));
1107 MONO_CONTEXT_SET_IP (&ctx, jit_tls->handler_block_return_address);
1109 jit_tls->handler_block_return_address = NULL;
1110 jit_tls->handler_block = NULL;
1112 if (!resume_ip) /*this should not happen, but we should avoid crashing */
1113 exc = mono_get_exception_execution_engine ("Invalid internal state, resuming abort after handler block but no resume ip found");
1115 exc = mono_thread_resume_interruption ();
1118 static void (*restore_context) (MonoContext *);
1120 if (!restore_context)
1121 restore_context = mono_get_restore_context ();
1123 mono_handle_exception (&ctx, exc);
1124 restore_context (&ctx);
1131 mono_create_handler_block_trampoline (void)
1133 static gpointer code;
1135 mono_memory_barrier ();
1140 if (mono_aot_only) {
1145 mono_trampolines_lock ();
1148 gpointer tmp = mono_arch_create_handler_block_trampoline ();
1149 mono_memory_barrier ();
1152 mono_trampolines_unlock ();
1159 * mono_get_trampoline_func:
1161 * Return the C function which needs to be called by the generic trampoline of type
1165 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1167 switch (tramp_type) {
1168 case MONO_TRAMPOLINE_JIT:
1169 case MONO_TRAMPOLINE_JUMP:
1170 return mono_magic_trampoline;
1171 case MONO_TRAMPOLINE_CLASS_INIT:
1172 return mono_class_init_trampoline;
1173 case MONO_TRAMPOLINE_GENERIC_CLASS_INIT:
1174 return mono_generic_class_init_trampoline;
1175 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1176 return mono_rgctx_lazy_fetch_trampoline;
1177 #ifdef MONO_ARCH_AOT_SUPPORTED
1178 case MONO_TRAMPOLINE_AOT:
1179 return mono_aot_trampoline;
1180 case MONO_TRAMPOLINE_AOT_PLT:
1181 return mono_aot_plt_trampoline;
1183 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1184 case MONO_TRAMPOLINE_DELEGATE:
1185 return mono_delegate_trampoline;
1187 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1188 return mono_altstack_restore_prot;
1189 #ifndef DISABLE_REMOTING
1190 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1191 return mono_generic_virtual_remoting_trampoline;
1193 case MONO_TRAMPOLINE_MONITOR_ENTER:
1194 return mono_monitor_enter_trampoline;
1195 case MONO_TRAMPOLINE_MONITOR_EXIT:
1196 return mono_monitor_exit_trampoline;
1197 case MONO_TRAMPOLINE_VCALL:
1198 return mono_vcall_trampoline;
1199 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1200 case MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD:
1201 return mono_handler_block_guard_trampoline;
1204 g_assert_not_reached ();
1210 create_trampoline_code (MonoTrampolineType tramp_type)
1212 MonoTrampInfo *info;
1215 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1216 mono_tramp_info_register (info);
1222 mono_trampolines_init (void)
1224 InitializeCriticalSection (&trampolines_mutex);
1229 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1230 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1231 mono_trampoline_code [MONO_TRAMPOLINE_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_CLASS_INIT);
1232 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_CLASS_INIT);
1233 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1234 #ifdef MONO_ARCH_AOT_SUPPORTED
1235 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1236 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1238 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1239 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1241 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1242 #ifndef DISABLE_REMOTING
1243 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1245 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_ENTER] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_ENTER);
1246 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_EXIT] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_EXIT);
1247 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1248 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1249 mono_trampoline_code [MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD] = create_trampoline_code (MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD);
1250 mono_create_handler_block_trampoline ();
1253 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1254 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1255 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1256 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1260 mono_trampolines_cleanup (void)
1262 if (class_init_hash_addr)
1263 g_hash_table_destroy (class_init_hash_addr);
1264 if (rgctx_lazy_fetch_trampoline_hash)
1265 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1266 if (rgctx_lazy_fetch_trampoline_hash_addr)
1267 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1269 DeleteCriticalSection (&trampolines_mutex);
1273 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1275 g_assert (mono_trampoline_code [tramp_type]);
1277 return mono_trampoline_code [tramp_type];
1281 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1284 return mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, code_len);
1286 return mono_arch_create_specific_trampoline (arg1, tramp_type, domain, code_len);
1290 mono_create_class_init_trampoline (MonoVTable *vtable)
1293 MonoDomain *domain = vtable->domain;
1295 g_assert (!vtable->klass->generic_container);
1297 /* previously created trampoline code */
1298 mono_domain_lock (domain);
1300 g_hash_table_lookup (domain_jit_info (domain)->class_init_trampoline_hash,
1302 mono_domain_unlock (domain);
1306 code = mono_create_specific_trampoline (vtable, MONO_TRAMPOLINE_CLASS_INIT, domain, NULL);
1308 ptr = mono_create_ftnptr (domain, code);
1310 /* store trampoline address */
1311 mono_domain_lock (domain);
1312 g_hash_table_insert (domain_jit_info (domain)->class_init_trampoline_hash,
1314 mono_domain_unlock (domain);
1316 mono_trampolines_lock ();
1317 if (!class_init_hash_addr)
1318 class_init_hash_addr = g_hash_table_new (NULL, NULL);
1319 g_hash_table_insert (class_init_hash_addr, ptr, vtable);
1320 mono_trampolines_unlock ();
1326 mono_create_generic_class_init_trampoline (void)
1328 #ifdef MONO_ARCH_VTABLE_REG
1329 static gpointer code;
1330 MonoTrampInfo *info;
1332 mono_trampolines_lock ();
1336 /* get_named_code () might return an ftnptr, but our caller expects a direct pointer */
1337 code = mono_get_addr_from_ftnptr (mono_aot_get_trampoline ("generic_class_init_trampoline"));
1339 code = mono_arch_create_generic_class_init_trampoline (&info, FALSE);
1340 mono_tramp_info_register (info);
1344 mono_trampolines_unlock ();
1348 g_assert_not_reached ();
1353 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper)
1357 guint32 code_size = 0;
1359 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1361 * We cannot recover the correct type of a shared generic
1362 * method from its native code address, so we use the
1363 * trampoline instead.
1364 * For synchronized methods, the trampoline adds the wrapper.
1366 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1369 mono_domain_lock (domain);
1370 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1371 mono_domain_unlock (domain);
1375 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1376 g_assert (code_size);
1378 ji = mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1379 ji->code_start = code;
1380 ji->code_size = code_size;
1381 ji->d.method = method;
1384 * mono_delegate_ctor needs to find the method metadata from the
1385 * trampoline address, so we save it here.
1388 mono_jit_info_table_add (domain, ji);
1390 mono_domain_lock (domain);
1391 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1392 mono_domain_unlock (domain);
1394 return ji->code_start;
1398 mono_create_jit_trampoline_in_domain (MonoDomain *domain, MonoMethod *method)
1402 if (mono_aot_only) {
1403 /* Avoid creating trampolines if possible */
1404 gpointer code = mono_jit_find_compiled_method (domain, method);
1410 mono_domain_lock (domain);
1411 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1412 mono_domain_unlock (domain);
1416 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1418 mono_domain_lock (domain);
1419 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1420 mono_domain_unlock (domain);
1428 mono_create_jit_trampoline (MonoMethod *method)
1430 return mono_create_jit_trampoline_in_domain (mono_domain_get (), method);
1434 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
1438 MonoDomain *domain = mono_domain_get ();
1439 guint8 *buf, *start;
1441 buf = start = mono_domain_alloc0 (domain, 2 * sizeof (gpointer));
1443 *(gpointer*)(gpointer)buf = image;
1444 buf += sizeof (gpointer);
1445 *(guint32*)(gpointer)buf = token;
1447 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
1455 mono_create_delegate_trampoline (MonoDomain *domain, MonoClass *klass)
1457 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1459 guint32 code_size = 0;
1460 gpointer *tramp_data;
1463 mono_domain_lock (domain);
1464 ptr = g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, klass);
1465 mono_domain_unlock (domain);
1469 // Precompute the delegate invoke impl and pass it to the delegate trampoline
1470 invoke = mono_get_delegate_invoke (klass);
1473 tramp_data = mono_domain_alloc (domain, sizeof (gpointer) * 3);
1474 tramp_data [0] = invoke;
1475 tramp_data [1] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1476 tramp_data [2] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1478 ptr = mono_create_specific_trampoline (tramp_data, MONO_TRAMPOLINE_DELEGATE, domain, &code_size);
1479 g_assert (code_size);
1481 /* store trampoline address */
1482 mono_domain_lock (domain);
1483 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash,
1485 mono_domain_unlock (domain);
1494 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1496 static gboolean inited = FALSE;
1497 static int num_trampolines = 0;
1498 MonoTrampInfo *info;
1500 gpointer tramp, ptr;
1502 mono_trampolines_lock ();
1503 if (rgctx_lazy_fetch_trampoline_hash)
1504 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1507 mono_trampolines_unlock ();
1511 if (mono_aot_only) {
1512 ptr = mono_aot_get_lazy_fetch_trampoline (offset);
1514 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1515 mono_tramp_info_register (info);
1516 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1519 mono_trampolines_lock ();
1520 if (!rgctx_lazy_fetch_trampoline_hash) {
1521 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1522 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1524 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1525 g_assert (offset != -1);
1526 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1527 mono_trampolines_unlock ();
1530 mono_counters_register ("RGCTX num lazy fetch trampolines",
1531 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1540 mono_create_monitor_enter_trampoline (void)
1542 static gpointer code;
1544 if (mono_aot_only) {
1546 code = mono_aot_get_trampoline ("monitor_enter_trampoline");
1550 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1551 mono_trampolines_lock ();
1554 MonoTrampInfo *info;
1556 code = mono_arch_create_monitor_enter_trampoline (&info, FALSE);
1557 mono_tramp_info_register (info);
1560 mono_trampolines_unlock ();
1563 g_assert_not_reached ();
1570 mono_create_monitor_exit_trampoline (void)
1572 static gpointer code;
1574 if (mono_aot_only) {
1576 code = mono_aot_get_trampoline ("monitor_exit_trampoline");
1580 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1581 mono_trampolines_lock ();
1584 MonoTrampInfo *info;
1586 code = mono_arch_create_monitor_exit_trampoline (&info, FALSE);
1587 mono_tramp_info_register (info);
1590 mono_trampolines_unlock ();
1593 g_assert_not_reached ();
1598 #ifdef MONO_ARCH_LLVM_SUPPORTED
1600 * mono_create_llvm_imt_trampoline:
1602 * LLVM compiled code can't pass in the IMT argument, so we use this trampoline, which
1603 * sets the IMT argument, then branches to the contents of the vtable slot given by
1604 * vt_offset in the vtable which is obtained from the argument list.
1607 mono_create_llvm_imt_trampoline (MonoDomain *domain, MonoMethod *m, int vt_offset)
1609 #ifdef MONO_ARCH_HAVE_LLVM_IMT_TRAMPOLINE
1610 return mono_arch_get_llvm_imt_trampoline (domain, m, vt_offset);
1612 g_assert_not_reached ();
1619 mono_find_class_init_trampoline_by_addr (gconstpointer addr)
1623 mono_trampolines_lock ();
1624 if (class_init_hash_addr)
1625 res = g_hash_table_lookup (class_init_hash_addr, addr);
1628 mono_trampolines_unlock ();
1633 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1637 mono_trampolines_lock ();
1638 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1639 /* We store the real offset + 1 so we can detect when the lookup fails */
1640 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1648 mono_trampolines_unlock ();
1652 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1656 "generic_class_init",
1661 "restore_stack_prot",
1662 "generic_virtual_remoting",
1666 "handler_block_guard"
1670 * mono_get_generic_trampoline_name:
1672 * Returns a pointer to malloc-ed memory.
1675 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1677 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1681 * mono_get_rgctx_fetch_trampoline_name:
1683 * Returns a pointer to malloc-ed memory.
1686 mono_get_rgctx_fetch_trampoline_name (int slot)
1691 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1692 index = MONO_RGCTX_SLOT_INDEX (slot);
1694 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);
1698 mini_get_nullified_class_init_trampoline (void)
1700 static gpointer nullified_class_init_trampoline;
1702 if (!nullified_class_init_trampoline) {
1704 MonoTrampInfo *info;
1706 if (mono_aot_only) {
1707 tramp = mono_aot_get_trampoline ("nullified_class_init_trampoline");
1709 tramp = mono_arch_get_nullified_class_init_trampoline (&info);
1710 mono_tramp_info_register (info);
1712 mono_memory_barrier ();
1713 nullified_class_init_trampoline = tramp;
1716 return nullified_class_init_trampoline;