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>
17 #include "debug-mini.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;
35 get_unbox_trampoline (MonoMethod *m, gpointer addr, gboolean need_rgctx_tramp)
40 * The unbox trampolines call the method directly, so need to add
41 * an rgctx tramp before them.
43 return mono_create_static_rgctx_trampoline (m, mono_aot_get_unbox_trampoline (m));
45 return mono_aot_get_unbox_trampoline (m);
48 return mono_arch_get_unbox_trampoline (m, addr);
52 #ifdef MONO_ARCH_GSHARED_SUPPORTED
60 rgctx_tramp_info_equal (gconstpointer ka, gconstpointer kb)
62 const RgctxTrampInfo *i1 = ka;
63 const RgctxTrampInfo *i2 = kb;
65 if (i1->m == i2->m && i1->addr == i2->addr)
72 rgctx_tramp_info_hash (gconstpointer data)
74 const RgctxTrampInfo *info = data;
76 return GPOINTER_TO_UINT (info->m) ^ GPOINTER_TO_UINT (info->addr);
80 * mono_create_static_rgctx_trampoline:
82 * Return a static rgctx trampoline for M which branches to ADDR which should
83 * point to the compiled code of M.
85 * Static rgctx trampolines are used when a shared generic method which doesn't
86 * have a this argument is called indirectly, ie. from code which can't pass in
87 * the rgctx argument. The trampoline sets the rgctx argument and jumps to the
88 * methods code. These trampolines are similar to the unbox trampolines, they
89 * perform the same task as the static rgctx wrappers, but they are smaller/faster,
90 * and can be made to work with full AOT.
91 * On PPC addr should be an ftnptr and the return value is an ftnptr too.
94 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
99 RgctxTrampInfo tmp_info;
100 RgctxTrampInfo *info;
102 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
103 g_assert (((gpointer*)addr) [2] == 0);
106 ctx = mini_method_get_rgctx (m);
108 domain = mono_domain_get ();
111 * In the AOT case, addr might point to either the method, or to an unbox trampoline,
112 * so make the hash keyed on the m+addr pair.
114 mono_domain_lock (domain);
115 if (!domain_jit_info (domain)->static_rgctx_trampoline_hash)
116 domain_jit_info (domain)->static_rgctx_trampoline_hash = g_hash_table_new (rgctx_tramp_info_hash, rgctx_tramp_info_equal);
118 tmp_info.addr = addr;
119 res = g_hash_table_lookup (domain_jit_info (domain)->static_rgctx_trampoline_hash,
121 mono_domain_unlock (domain);
126 res = mono_aot_get_static_rgctx_trampoline (ctx, addr);
128 res = mono_arch_get_static_rgctx_trampoline (m, ctx, addr);
130 mono_domain_lock (domain);
131 /* Duplicates inserted while we didn't hold the lock are OK */
132 info = mono_domain_alloc (domain, sizeof (RgctxTrampInfo));
135 g_hash_table_insert (domain_jit_info (domain)->static_rgctx_trampoline_hash, info, res);
136 mono_domain_unlock (domain);
138 static_rgctx_trampolines ++;
144 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
147 * This shouldn't happen as all arches which support generic sharing support
148 * static rgctx trampolines as well.
150 g_assert_not_reached ();
154 #ifdef MONO_ARCH_HAVE_IMT
157 * Either IMPL_METHOD or AOT_ADDR will be set on return.
162 * This works against problems when compiling with gcc 4.6 on arm. The 'then' part of
163 * this line gets executed, even when the condition is false:
164 * if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
165 * *need_rgctx_tramp = TRUE;
167 __attribute__ ((noinline))
169 mono_convert_imt_slot_to_vtable_slot (gpointer* slot, mgreg_t *regs, guint8 *code, MonoMethod *method, MonoMethod **impl_method, gboolean *need_rgctx_tramp, gboolean *variance_used, gpointer *aot_addr)
171 MonoObject *this_argument = mono_arch_get_this_arg_from_call (regs, code);
172 MonoVTable *vt = this_argument->vtable;
173 int displacement = slot - ((gpointer*)vt);
175 if (displacement > 0) {
176 /* slot is in the vtable, not in the IMT */
178 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p is in the vtable, not in the IMT\n", slot);
182 MonoMethod *imt_method = mono_arch_find_imt_method (regs, code);
184 int interface_offset;
185 int imt_slot = MONO_IMT_SIZE + displacement;
187 /*This has to be variance aware since imt_method can be from an interface that vt->klass doesn't directly implement*/
188 interface_offset = mono_class_interface_offset_with_variance (vt->klass, imt_method->klass, variance_used);
190 if (interface_offset < 0) {
191 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));
193 mono_vtable_build_imt_slot (vt, mono_method_get_imt_slot (imt_method));
195 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
196 MonoGenericContext context = { NULL, NULL };
199 * Generic virtual method, imt_method contains the inflated interface
200 * method, need to get the inflated impl method.
202 /* imt_method->slot might not be set */
203 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_declaring_generic_method (imt_method)->slot);
205 if (impl->klass->generic_class)
206 context.class_inst = impl->klass->generic_class->context.class_inst;
207 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
208 impl = mono_class_inflate_generic_method (impl, &context);
210 /* Avoid loading metadata or creating a generic vtable if possible */
211 if (!vt->klass->valuetype)
212 *aot_addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, interface_offset + mono_method_get_vtable_slot (imt_method));
218 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_vtable_slot (imt_method));
221 if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
222 *need_rgctx_tramp = TRUE;
223 if (impl && impl->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
224 WrapperInfo *info = mono_marshal_get_wrapper_info (impl);
226 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
227 // FIXME: This needs a gsharedvt-out trampoline, since the caller uses the gsharedvt calling conv, but the
228 // wrapper is a normal non-generic method.
229 *need_rgctx_tramp = TRUE;
230 //g_assert_not_reached ();
236 printf ("mono_convert_imt_slot_to_vtable_slot: method = %s.%s.%s, imt_method = %s.%s.%s\n",
237 method->klass->name_space, method->klass->name, method->name,
238 imt_method->klass->name_space, imt_method->klass->name, imt_method->name);
241 g_assert (imt_slot < MONO_IMT_SIZE);
242 if (vt->imt_collisions_bitmap & (1 << imt_slot)) {
243 int slot = mono_method_get_vtable_index (imt_method);
245 gpointer *vtable_slot;
247 g_assert (slot != -1);
248 vtable_offset = interface_offset + slot;
249 vtable_slot = & (vt->vtable [vtable_offset]);
251 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);
256 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, but not colliding\n", slot, imt_slot);
265 * This is a super-ugly hack to fix bug #616463.
267 * The problem is that we don't always set is_generic for generic
268 * method definitions. See the comment at the end of
269 * mono_class_inflate_generic_method_full_checked() in class.c.
272 is_generic_method_definition (MonoMethod *m)
274 MonoGenericContext *context;
280 context = mono_method_get_context (m);
281 if (!context->method_inst)
283 if (context->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)m)->declaring)->context.method_inst)
288 ji_is_gsharedvt (MonoJitInfo *ji)
290 if (ji && ji->has_generic_jit_info && (mono_jit_info_get_generic_sharing_context (ji)->var_is_vt ||
291 mono_jit_info_get_generic_sharing_context (ji)->mvar_is_vt))
298 * mini_add_method_trampoline:
300 * Add static rgctx/gsharedvt_in trampoline to M/COMPILED_METHOD if needed. Return the trampoline address, or
301 * COMPILED_METHOD if no trampoline is needed.
302 * ORIG_METHOD is the method the caller originally called i.e. an iface method, or NULL.
305 mini_add_method_trampoline (MonoMethod *orig_method, MonoMethod *m, gpointer compiled_method, gboolean add_static_rgctx_tramp)
307 gpointer addr = compiled_method;
308 gboolean callee_gsharedvt, callee_array_helper;
310 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
312 // FIXME: This loads information from AOT
313 callee_gsharedvt = ji_is_gsharedvt (ji);
315 callee_array_helper = FALSE;
316 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
317 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
320 * generic array helpers.
321 * Have to replace the wrappers with the original generic instances.
323 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
324 callee_array_helper = TRUE;
325 m = info->d.generic_array_helper.method;
327 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
328 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
330 /* Same for synchronized inner wrappers */
331 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
332 m = info->d.synchronized_inner.method;
339 if (callee_gsharedvt)
340 g_assert (m->is_inflated);
342 addr = compiled_method;
344 if (callee_gsharedvt && mini_is_gsharedvt_variable_signature (mono_method_signature (ji->method))) {
345 MonoGenericSharingContext *gsctx;
346 MonoMethodSignature *sig, *gsig;
348 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
350 /* Call from normal/gshared code to gsharedvt code with variable signature */
351 gsctx = mono_jit_info_get_generic_sharing_context (ji);
353 sig = mono_method_signature (m);
354 gsig = mono_method_signature (ji->method);
356 addr = mini_get_gsharedvt_wrapper (TRUE, compiled_method, sig, gsig, gsctx, -1, FALSE);
358 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
361 if (add_static_rgctx_tramp && !callee_array_helper)
362 addr = mono_create_static_rgctx_trampoline (m, addr);
368 * common_call_trampoline:
370 * The code to handle normal, virtual, and interface method calls and jumps, both
371 * from JITted and LLVM compiled code.
374 common_call_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8* tramp, MonoVTable *vt, gpointer *vtable_slot, gboolean need_rgctx_tramp)
376 gpointer addr, compiled_method;
377 gboolean generic_shared = 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;
413 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, regs, code, m, &impl_method, &need_rgctx_tramp, &variance_used, &addr);
414 /* This is the vcall slot which gets called through the IMT thunk */
415 vtable_slot_to_patch = vtable_slot;
416 /* mono_convert_imt_slot_to_vtable_slot () also gives us the method that is supposed
417 * to be called, so we compile it and go ahead as usual.
419 /*g_print ("imt found method %p (%s) at %p\n", impl_method, impl_method->name, code);*/
420 if (m->is_inflated && ((MonoMethodInflated*)m)->context.method_inst) {
421 /* Generic virtual method */
423 need_rgctx_tramp = TRUE;
424 } else if (variance_used && mono_class_has_variant_generic_params (m->klass)) {
428 if (addr && !generic_virtual && !variant_iface) {
430 * We found AOT compiled code for the method, skip the rest.
432 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
435 return mono_create_ftnptr (mono_domain_get (), addr);
444 * The virtual check is needed because is_generic_method_definition (m) could
445 * return TRUE for methods used in IMT calls too.
447 if (virtual && is_generic_method_definition (m)) {
448 MonoGenericContext context = { NULL, NULL };
449 MonoMethod *declaring;
452 declaring = mono_method_get_declaring_generic_method (m);
456 if (m->klass->generic_class)
457 context.class_inst = m->klass->generic_class->context.class_inst;
459 g_assert (!m->klass->generic_container);
461 #ifdef MONO_ARCH_HAVE_IMT
462 generic_virtual = mono_arch_find_imt_method (regs, code);
464 if (generic_virtual) {
465 g_assert (generic_virtual->is_inflated);
466 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
469 m = mono_class_inflate_generic_method (declaring, &context);
470 /* FIXME: only do this if the method is sharable */
471 need_rgctx_tramp = TRUE;
472 } else if ((context_used = mono_method_check_context_used (m))) {
473 MonoClass *klass = NULL;
474 MonoMethod *actual_method = NULL;
475 MonoVTable *vt = NULL;
476 MonoGenericInst *method_inst = NULL;
479 generic_shared = TRUE;
483 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
484 #ifdef MONO_ARCH_RGCTX_REG
485 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
487 klass = mrgctx->class_vtable->klass;
488 method_inst = mrgctx->method_inst;
490 g_assert_not_reached ();
492 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
493 #ifdef MONO_ARCH_RGCTX_REG
494 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
496 klass = vtable->klass;
498 g_assert_not_reached ();
501 #ifdef MONO_ARCH_HAVE_IMT
502 MonoObject *this_argument = mono_arch_get_this_arg_from_call (regs, code);
504 vt = this_argument->vtable;
505 vtable_slot = orig_vtable_slot;
507 g_assert (this_argument->vtable->klass->inited);
508 //mono_class_init (this_argument->vtable->klass);
511 mono_class_setup_supertypes (this_argument->vtable->klass);
512 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
519 g_assert (vtable_slot || klass);
522 int displacement = vtable_slot - ((gpointer*)vt);
524 g_assert_not_reached ();
526 g_assert (displacement > 0);
528 actual_method = vt->klass->vtable [displacement];
532 MonoGenericContext context = { NULL, NULL };
535 declaring = mono_method_get_declaring_generic_method (m);
539 if (klass->generic_class)
540 context.class_inst = klass->generic_class->context.class_inst;
541 else if (klass->generic_container)
542 context.class_inst = klass->generic_container->context.class_inst;
543 context.method_inst = method_inst;
545 actual_method = mono_class_inflate_generic_method (declaring, &context);
547 actual_method = mono_class_get_method_generic (klass, m);
551 g_assert (actual_method);
552 g_assert (actual_method->klass == klass);
554 if (actual_method->is_inflated)
555 declaring = mono_method_get_declaring_generic_method (actual_method);
562 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
563 m = mono_marshal_get_synchronized_wrapper (m);
564 need_rgctx_tramp = FALSE;
567 /* Calls made through delegates on platforms without delegate trampolines */
568 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
569 need_rgctx_tramp = TRUE;
571 addr = compiled_method = mono_compile_method (m);
574 mono_debugger_trampoline_compiled (code, m, addr);
576 addr = mini_add_method_trampoline (orig_method, m, compiled_method, need_rgctx_tramp);
578 if (generic_virtual || variant_iface) {
579 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
581 vtable_slot = orig_vtable_slot;
582 g_assert (vtable_slot);
584 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
585 addr = get_unbox_trampoline (m, addr, need_rgctx_tramp);
587 mono_method_add_generic_virtual_invocation (mono_domain_get (),
594 /* the method was jumped to */
596 MonoDomain *domain = mono_domain_get ();
598 /* Patch the got entries pointing to this method */
600 * We do this here instead of in mono_codegen () to cover the case when m
601 * was loaded from an aot image.
603 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
606 mono_domain_lock (domain);
607 list = g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
609 for (tmp = list; tmp; tmp = tmp->next) {
610 gpointer *got_slot = tmp->data;
613 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
616 mono_domain_unlock (domain);
622 vtable_slot = orig_vtable_slot;
625 if (m->klass->valuetype)
626 addr = get_unbox_trampoline (m, addr, need_rgctx_tramp);
628 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))) {
629 g_assert (*vtable_slot_to_patch);
630 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
634 guint8 *plt_entry = mono_aot_get_plt_entry (code);
635 gboolean no_patch = FALSE;
636 MonoJitInfo *target_ji;
639 if (generic_shared) {
641 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
643 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
645 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
650 mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
652 if (generic_shared) {
653 if (m->wrapper_type != MONO_WRAPPER_NONE)
654 m = mono_marshal_method_from_wrapper (m);
655 //g_assert (mono_method_is_generic_sharable_impl (m, FALSE));
658 /* Patch calling code */
660 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
662 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
664 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
666 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
667 * generic sharing fails.
668 * FIXME: Performance problem.
673 if (!no_patch && mono_method_same_domain (ji, target_ji))
674 mono_arch_patch_callsite (ji->code_start, code, addr);
682 * mono_magic_trampoline:
684 * This trampoline handles normal calls from JITted code.
687 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
691 return common_call_trampoline (regs, code, arg, tramp, NULL, NULL, FALSE);
695 * mono_vcall_trampoline:
697 * This trampoline handles virtual calls.
700 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
704 gpointer *vtable_slot;
706 gboolean need_rgctx_tramp = FALSE;
712 * We need to obtain the following pieces of information:
713 * - the method which needs to be compiled.
715 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
716 * the other two can be computed from the vtable + the slot index.
718 #ifndef MONO_ARCH_THIS_AS_FIRST_ARG
719 /* All architectures should support this */
720 g_assert_not_reached ();
724 * Obtain the vtable from the 'this' arg.
726 this = mono_arch_get_this_arg_from_call (regs, code);
732 /* Normal virtual call */
733 vtable_slot = &(vt->vtable [slot]);
735 /* Avoid loading metadata or creating a generic vtable if possible */
736 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot);
737 if (addr && !vt->klass->valuetype) {
738 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
741 return mono_create_ftnptr (mono_domain_get (), addr);
746 * is_generic_method_definition() above) also
747 * goes away if we do a
748 * mono_class_setup_vtable (vt->klass) here,
749 * because we then inflate the method
750 * correctly, put it in the cache, and the
751 * "wrong" inflation invocation still looks up
752 * the correctly inflated method.
754 * The hack above seems more stable and
757 m = mono_class_get_vtable_entry (vt->klass, slot);
759 need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (m, 0);
762 vtable_slot = &(((gpointer*)vt) [slot]);
765 need_rgctx_tramp = FALSE;
768 return common_call_trampoline (regs, code, m, tramp, vt, vtable_slot, need_rgctx_tramp);
771 #ifndef DISABLE_REMOTING
773 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
775 MonoGenericContext context = { NULL, NULL };
776 MonoMethod *imt_method, *declaring;
781 g_assert (m->is_generic);
784 declaring = mono_method_get_declaring_generic_method (m);
788 if (m->klass->generic_class)
789 context.class_inst = m->klass->generic_class->context.class_inst;
791 g_assert (!m->klass->generic_container);
793 #ifdef MONO_ARCH_HAVE_IMT
794 imt_method = mono_arch_find_imt_method (regs, code);
795 if (imt_method->is_inflated)
796 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
798 m = mono_class_inflate_generic_method (declaring, &context);
799 m = mono_marshal_get_remoting_invoke_with_check (m);
801 addr = mono_compile_method (m);
804 mono_debugger_trampoline_compiled (NULL, m, addr);
811 * mono_aot_trampoline:
813 * This trampoline handles calls made from AOT code. We try to bypass the
814 * normal JIT compilation logic to avoid loading the metadata for the method.
816 #ifdef MONO_ARCH_AOT_SUPPORTED
818 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
823 MonoMethod *method = NULL;
829 image = *(gpointer*)(gpointer)token_info;
830 token_info += sizeof (gpointer);
831 token = *(guint32*)(gpointer)token_info;
833 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token);
835 method = mono_get_method (image, token, NULL);
838 /* Use the generic code */
839 return mono_magic_trampoline (regs, code, method, tramp);
842 addr = mono_create_ftnptr (mono_domain_get (), addr);
844 /* This is a normal call through a PLT entry */
845 plt_entry = mono_aot_get_plt_entry (code);
846 g_assert (plt_entry);
848 mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
854 * mono_aot_plt_trampoline:
856 * This trampoline handles calls made from AOT code through the PLT table.
859 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
862 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
867 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code);
869 if (mono_loader_get_last_error ())
870 mono_raise_exception (mono_loader_error_prepare_exception (mono_loader_get_last_error ()));
871 // FIXME: Error handling (how ?)
880 * mono_class_init_trampoline:
882 * This method calls mono_runtime_class_init () to run the static constructor
883 * for the type, then patches the caller code so it is not called again.
886 mono_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
888 guint8 *plt_entry = mono_aot_get_plt_entry (code);
892 mono_runtime_class_init (vtable);
895 mono_arch_nullify_plt_entry (plt_entry, regs);
897 mono_arch_nullify_class_init_trampoline (code, regs);
902 * mono_generic_class_init_trampoline:
904 * This method calls mono_runtime_class_init () to run the static constructor
908 mono_generic_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
912 mono_runtime_class_init (vtable);
916 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
918 #ifdef MONO_ARCH_VTABLE_REG
919 static gboolean inited = FALSE;
920 static int num_lookups = 0;
921 guint32 slot = GPOINTER_TO_UINT (data);
922 mgreg_t *r = (mgreg_t*)regs;
923 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
924 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
925 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
930 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
937 return mono_method_fill_runtime_generic_context (arg, code, index);
939 return mono_class_fill_runtime_generic_context (arg, code, index);
941 g_assert_not_reached ();
946 mono_monitor_enter_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
948 mono_monitor_enter (obj);
952 mono_monitor_exit_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
954 mono_monitor_exit (obj);
957 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
960 * mono_delegate_trampoline:
962 * This trampoline handles calls made to Delegate:Invoke ().
963 * This is called once the first time a delegate is invoked, so it must be fast.
966 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
968 MonoDomain *domain = mono_domain_get ();
969 MonoDelegate *delegate;
972 MonoMethod *method = NULL;
973 gboolean multicast, callvirt = FALSE;
974 gboolean need_rgctx_tramp = FALSE;
975 gboolean need_unbox_tramp = FALSE;
976 gboolean enable_caching = TRUE;
977 MonoMethod *invoke = tramp_data [0];
978 guint8 *impl_this = tramp_data [1];
979 guint8 *impl_nothis = tramp_data [2];
981 MonoMethodSignature *sig;
982 gpointer addr, compiled_method;
986 /* Obtain the delegate object according to the calling convention */
987 delegate = mono_arch_get_this_arg_from_call (regs, code);
989 if (delegate->method) {
990 method = delegate->method;
993 * delegate->method_ptr == NULL means the delegate was initialized by
994 * mini_delegate_ctor, while != NULL means it is initialized by
995 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
996 * (ctor_with_method () does this, but it doesn't store the wrapper back into
999 #ifndef DISABLE_REMOTING
1000 if (delegate->target && delegate->target->vtable->klass == mono_defaults.transparent_proxy_class) {
1002 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_defaults.com_object_class &&
1003 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1005 method = mono_marshal_get_remoting_invoke (method);
1009 mono_error_init (&err);
1010 sig = mono_method_signature_checked (method, &err);
1012 mono_error_raise_exception (&err);
1014 if (sig->hasthis && method->klass->valuetype) {
1016 need_unbox_tramp = TRUE;
1018 method = mono_marshal_get_unbox_wrapper (method);
1022 ji = mono_jit_info_table_find (domain, mono_get_addr_from_ftnptr (delegate->method_ptr));
1024 method = ji->method;
1028 mono_error_init (&err);
1029 sig = mono_method_signature_checked (method, &err);
1031 mono_error_raise_exception (&err);
1033 callvirt = !delegate->target && sig->hasthis;
1034 if (delegate->target &&
1035 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1036 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1037 method->klass->flags & TYPE_ATTRIBUTE_ABSTRACT) {
1038 method = mono_object_get_virtual_method (delegate->target, method);
1039 enable_caching = FALSE;
1043 if (method && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1044 method = mono_marshal_get_synchronized_wrapper (method);
1046 if (method && mono_method_needs_static_rgctx_invoke (method, FALSE))
1047 need_rgctx_tramp = TRUE;
1050 * If the called address is a trampoline, replace it with the compiled method so
1051 * further calls don't have to go through the trampoline.
1053 if (method && !callvirt) {
1054 /* Avoid the overhead of looking up an already compiled method if possible */
1055 if (enable_caching && delegate->method_code && *delegate->method_code) {
1056 delegate->method_ptr = *delegate->method_code;
1058 compiled_method = addr = mono_compile_method (method);
1059 if (need_unbox_tramp)
1061 addr = get_unbox_trampoline (method, addr, need_rgctx_tramp);
1063 addr = mini_add_method_trampoline (NULL, method, compiled_method, need_rgctx_tramp);
1064 delegate->method_ptr = addr;
1065 if (enable_caching && delegate->method_code)
1066 *delegate->method_code = delegate->method_ptr;
1067 mono_debugger_trampoline_compiled (NULL, method, delegate->method_ptr);
1070 if (need_rgctx_tramp)
1071 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1074 multicast = ((MonoMulticastDelegate*)delegate)->prev != NULL;
1075 if (!multicast && !callvirt) {
1076 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1077 /* Closed static delegate */
1080 code = delegate->target ? impl_this : impl_nothis;
1083 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1088 /* The general, unoptimized case */
1089 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1090 code = mono_compile_method (m);
1091 code = mini_add_method_trampoline (NULL, m, code, mono_method_needs_static_rgctx_invoke (m, FALSE));
1092 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1093 mono_debugger_trampoline_compiled (NULL, m, delegate->invoke_impl);
1100 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1102 mono_handler_block_guard_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
1106 MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
1107 gpointer resume_ip = jit_tls->handler_block_return_address;
1109 memcpy (&ctx, &jit_tls->handler_block_context, sizeof (MonoContext));
1110 MONO_CONTEXT_SET_IP (&ctx, jit_tls->handler_block_return_address);
1112 jit_tls->handler_block_return_address = NULL;
1113 jit_tls->handler_block = NULL;
1115 if (!resume_ip) /*this should not happen, but we should avoid crashing */
1116 exc = mono_get_exception_execution_engine ("Invalid internal state, resuming abort after handler block but no resume ip found");
1118 exc = mono_thread_resume_interruption ();
1121 static void (*restore_context) (MonoContext *);
1123 if (!restore_context)
1124 restore_context = mono_get_restore_context ();
1126 mono_handle_exception (&ctx, exc);
1127 restore_context (&ctx);
1134 mono_create_handler_block_trampoline (void)
1136 static gpointer code;
1138 if (mono_aot_only) {
1143 mono_trampolines_lock ();
1146 code = mono_arch_create_handler_block_trampoline ();
1148 mono_trampolines_unlock ();
1155 * mono_get_trampoline_func:
1157 * Return the C function which needs to be called by the generic trampoline of type
1161 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1163 switch (tramp_type) {
1164 case MONO_TRAMPOLINE_JIT:
1165 case MONO_TRAMPOLINE_JUMP:
1166 return mono_magic_trampoline;
1167 case MONO_TRAMPOLINE_CLASS_INIT:
1168 return mono_class_init_trampoline;
1169 case MONO_TRAMPOLINE_GENERIC_CLASS_INIT:
1170 return mono_generic_class_init_trampoline;
1171 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1172 return mono_rgctx_lazy_fetch_trampoline;
1173 #ifdef MONO_ARCH_AOT_SUPPORTED
1174 case MONO_TRAMPOLINE_AOT:
1175 return mono_aot_trampoline;
1176 case MONO_TRAMPOLINE_AOT_PLT:
1177 return mono_aot_plt_trampoline;
1179 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1180 case MONO_TRAMPOLINE_DELEGATE:
1181 return mono_delegate_trampoline;
1183 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1184 return mono_altstack_restore_prot;
1185 #ifndef DISABLE_REMOTING
1186 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1187 return mono_generic_virtual_remoting_trampoline;
1189 case MONO_TRAMPOLINE_MONITOR_ENTER:
1190 return mono_monitor_enter_trampoline;
1191 case MONO_TRAMPOLINE_MONITOR_EXIT:
1192 return mono_monitor_exit_trampoline;
1193 case MONO_TRAMPOLINE_VCALL:
1194 return mono_vcall_trampoline;
1195 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1196 case MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD:
1197 return mono_handler_block_guard_trampoline;
1200 g_assert_not_reached ();
1206 create_trampoline_code (MonoTrampolineType tramp_type)
1208 MonoTrampInfo *info;
1211 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1213 mono_save_trampoline_xdebug_info (info);
1214 if (mono_jit_map_is_enabled ())
1215 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1216 mono_tramp_info_free (info);
1223 mono_trampolines_init (void)
1225 InitializeCriticalSection (&trampolines_mutex);
1230 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1231 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1232 mono_trampoline_code [MONO_TRAMPOLINE_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_CLASS_INIT);
1233 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_CLASS_INIT);
1234 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1235 #ifdef MONO_ARCH_AOT_SUPPORTED
1236 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1237 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1239 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1240 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1242 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1243 #ifndef DISABLE_REMOTING
1244 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1246 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_ENTER] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_ENTER);
1247 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_EXIT] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_EXIT);
1248 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1249 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1250 mono_trampoline_code [MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD] = create_trampoline_code (MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD);
1251 mono_create_handler_block_trampoline ();
1254 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1255 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1256 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1257 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1261 mono_trampolines_cleanup (void)
1263 if (class_init_hash_addr)
1264 g_hash_table_destroy (class_init_hash_addr);
1265 if (rgctx_lazy_fetch_trampoline_hash)
1266 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1267 if (rgctx_lazy_fetch_trampoline_hash_addr)
1268 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1270 DeleteCriticalSection (&trampolines_mutex);
1274 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1276 g_assert (mono_trampoline_code [tramp_type]);
1278 return mono_trampoline_code [tramp_type];
1282 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1285 return mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, code_len);
1287 return mono_arch_create_specific_trampoline (arg1, tramp_type, domain, code_len);
1291 mono_create_class_init_trampoline (MonoVTable *vtable)
1294 MonoDomain *domain = vtable->domain;
1296 g_assert (!vtable->klass->generic_container);
1298 /* previously created trampoline code */
1299 mono_domain_lock (domain);
1301 g_hash_table_lookup (domain_jit_info (domain)->class_init_trampoline_hash,
1303 mono_domain_unlock (domain);
1307 code = mono_create_specific_trampoline (vtable, MONO_TRAMPOLINE_CLASS_INIT, domain, NULL);
1309 ptr = mono_create_ftnptr (domain, code);
1311 /* store trampoline address */
1312 mono_domain_lock (domain);
1313 g_hash_table_insert (domain_jit_info (domain)->class_init_trampoline_hash,
1315 mono_domain_unlock (domain);
1317 mono_trampolines_lock ();
1318 if (!class_init_hash_addr)
1319 class_init_hash_addr = g_hash_table_new (NULL, NULL);
1320 g_hash_table_insert (class_init_hash_addr, ptr, vtable);
1321 mono_trampolines_unlock ();
1327 mono_create_generic_class_init_trampoline (void)
1329 #ifdef MONO_ARCH_VTABLE_REG
1330 static gpointer code;
1331 MonoTrampInfo *info;
1333 mono_trampolines_lock ();
1337 /* get_named_code () might return an ftnptr, but our caller expects a direct pointer */
1338 code = mono_get_addr_from_ftnptr (mono_aot_get_trampoline ("generic_class_init_trampoline"));
1340 code = mono_arch_create_generic_class_init_trampoline (&info, FALSE);
1343 mono_save_trampoline_xdebug_info (info);
1344 if (mono_jit_map_is_enabled ())
1345 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1346 mono_tramp_info_free (info);
1351 mono_trampolines_unlock ();
1355 g_assert_not_reached ();
1360 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper)
1364 guint32 code_size = 0;
1366 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1368 * We cannot recover the correct type of a shared generic
1369 * method from its native code address, so we use the
1370 * trampoline instead.
1371 * For synchronized methods, the trampoline adds the wrapper.
1373 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1376 mono_domain_lock (domain);
1377 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1378 mono_domain_unlock (domain);
1382 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1383 g_assert (code_size);
1385 ji = mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1386 ji->code_start = code;
1387 ji->code_size = code_size;
1388 ji->method = method;
1391 * mono_delegate_ctor needs to find the method metadata from the
1392 * trampoline address, so we save it here.
1395 mono_jit_info_table_add (domain, ji);
1397 mono_domain_lock (domain);
1398 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1399 mono_domain_unlock (domain);
1401 return ji->code_start;
1405 mono_create_jit_trampoline_in_domain (MonoDomain *domain, MonoMethod *method)
1409 if (mono_aot_only) {
1410 /* Avoid creating trampolines if possible */
1411 gpointer code = mono_jit_find_compiled_method (domain, method);
1417 mono_domain_lock (domain);
1418 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1419 mono_domain_unlock (domain);
1423 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1425 mono_domain_lock (domain);
1426 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1427 mono_domain_unlock (domain);
1435 mono_create_jit_trampoline (MonoMethod *method)
1437 return mono_create_jit_trampoline_in_domain (mono_domain_get (), method);
1441 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
1445 MonoDomain *domain = mono_domain_get ();
1446 guint8 *buf, *start;
1448 buf = start = mono_domain_alloc0 (domain, 2 * sizeof (gpointer));
1450 *(gpointer*)(gpointer)buf = image;
1451 buf += sizeof (gpointer);
1452 *(guint32*)(gpointer)buf = token;
1454 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
1462 mono_create_delegate_trampoline (MonoDomain *domain, MonoClass *klass)
1464 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1466 guint32 code_size = 0;
1467 gpointer *tramp_data;
1470 mono_domain_lock (domain);
1471 ptr = g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, klass);
1472 mono_domain_unlock (domain);
1476 // Precompute the delegate invoke impl and pass it to the delegate trampoline
1477 invoke = mono_get_delegate_invoke (klass);
1480 tramp_data = mono_domain_alloc (domain, sizeof (gpointer) * 3);
1481 tramp_data [0] = invoke;
1482 tramp_data [1] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1483 tramp_data [2] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1485 ptr = mono_create_specific_trampoline (tramp_data, MONO_TRAMPOLINE_DELEGATE, domain, &code_size);
1486 g_assert (code_size);
1488 /* store trampoline address */
1489 mono_domain_lock (domain);
1490 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash,
1492 mono_domain_unlock (domain);
1501 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1503 static gboolean inited = FALSE;
1504 static int num_trampolines = 0;
1505 MonoTrampInfo *info;
1507 gpointer tramp, ptr;
1510 return mono_aot_get_lazy_fetch_trampoline (offset);
1512 mono_trampolines_lock ();
1513 if (rgctx_lazy_fetch_trampoline_hash)
1514 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1517 mono_trampolines_unlock ();
1521 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1523 mono_save_trampoline_xdebug_info (info);
1524 if (mono_jit_map_is_enabled ())
1525 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1526 mono_tramp_info_free (info);
1528 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1530 mono_trampolines_lock ();
1531 if (!rgctx_lazy_fetch_trampoline_hash) {
1532 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1533 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1535 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1536 g_assert (offset != -1);
1537 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1538 mono_trampolines_unlock ();
1541 mono_counters_register ("RGCTX num lazy fetch trampolines",
1542 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1551 mono_create_monitor_enter_trampoline (void)
1553 static gpointer code;
1555 if (mono_aot_only) {
1557 code = mono_aot_get_trampoline ("monitor_enter_trampoline");
1561 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1562 mono_trampolines_lock ();
1565 MonoTrampInfo *info;
1567 code = mono_arch_create_monitor_enter_trampoline (&info, FALSE);
1569 mono_save_trampoline_xdebug_info (info);
1570 if (mono_jit_map_is_enabled ())
1571 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1572 mono_tramp_info_free (info);
1576 mono_trampolines_unlock ();
1579 g_assert_not_reached ();
1586 mono_create_monitor_exit_trampoline (void)
1588 static gpointer code;
1590 if (mono_aot_only) {
1592 code = mono_aot_get_trampoline ("monitor_exit_trampoline");
1596 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1597 mono_trampolines_lock ();
1600 MonoTrampInfo *info;
1602 code = mono_arch_create_monitor_exit_trampoline (&info, FALSE);
1604 mono_save_trampoline_xdebug_info (info);
1605 if (mono_jit_map_is_enabled ())
1606 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1607 mono_tramp_info_free (info);
1611 mono_trampolines_unlock ();
1614 g_assert_not_reached ();
1619 #ifdef MONO_ARCH_LLVM_SUPPORTED
1621 * mono_create_llvm_imt_trampoline:
1623 * LLVM compiled code can't pass in the IMT argument, so we use this trampoline, which
1624 * sets the IMT argument, then branches to the contents of the vtable slot given by
1625 * vt_offset in the vtable which is obtained from the argument list.
1628 mono_create_llvm_imt_trampoline (MonoDomain *domain, MonoMethod *m, int vt_offset)
1630 #ifdef MONO_ARCH_HAVE_LLVM_IMT_TRAMPOLINE
1631 return mono_arch_get_llvm_imt_trampoline (domain, m, vt_offset);
1633 g_assert_not_reached ();
1640 mono_find_class_init_trampoline_by_addr (gconstpointer addr)
1644 mono_trampolines_lock ();
1645 if (class_init_hash_addr)
1646 res = g_hash_table_lookup (class_init_hash_addr, addr);
1649 mono_trampolines_unlock ();
1654 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1658 mono_trampolines_lock ();
1659 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1660 /* We store the real offset + 1 so we can detect when the lookup fails */
1661 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1669 mono_trampolines_unlock ();
1673 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1677 "generic_class_init",
1682 "restore_stack_prot",
1683 #ifndef DISABLE_REMOTING
1684 "generic_virtual_remoting",
1689 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1690 "handler_block_guard"
1695 * mono_get_generic_trampoline_name:
1697 * Returns a pointer to malloc-ed memory.
1700 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1702 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1706 * mono_get_rgctx_fetch_trampoline_name:
1708 * Returns a pointer to malloc-ed memory.
1711 mono_get_rgctx_fetch_trampoline_name (int slot)
1716 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1717 index = MONO_RGCTX_SLOT_INDEX (slot);
1719 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);