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;
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, 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 (!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;
293 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
295 // FIXME: This loads information from AOT
296 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
298 callee_array_helper = FALSE;
299 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
300 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
303 * generic array helpers.
304 * Have to replace the wrappers with the original generic instances.
306 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
307 callee_array_helper = TRUE;
308 m = info->d.generic_array_helper.method;
310 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
311 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
313 /* Same for synchronized inner wrappers */
314 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
315 m = info->d.synchronized_inner.method;
322 if (callee_gsharedvt)
323 g_assert (m->is_inflated);
325 addr = compiled_method;
327 if (add_unbox_tramp) {
329 * The unbox trampolines call the method directly, so need to add
330 * an rgctx tramp before them.
333 addr = mono_aot_get_unbox_trampoline (m);
335 unbox_trampolines ++;
336 addr = mono_arch_get_unbox_trampoline (m, addr);
340 if (callee_gsharedvt && mini_is_gsharedvt_variable_signature (mono_method_signature (ji->method))) {
341 MonoGenericSharingContext *gsctx;
342 MonoMethodSignature *sig, *gsig;
344 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
346 /* Call from normal/gshared code to gsharedvt code with variable signature */
347 gsctx = mono_jit_info_get_generic_sharing_context (ji);
349 sig = mono_method_signature (m);
350 gsig = mono_method_signature (ji->method);
352 addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, gsctx, -1, FALSE);
354 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
357 if (add_static_rgctx_tramp && !callee_array_helper)
358 addr = mono_create_static_rgctx_trampoline (m, addr);
364 * common_call_trampoline:
366 * The code to handle normal, virtual, and interface method calls and jumps, both
367 * from JITted and LLVM compiled code.
370 common_call_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8* tramp, MonoVTable *vt, gpointer *vtable_slot, gboolean need_rgctx_tramp)
372 gpointer addr, compiled_method;
373 gboolean generic_shared = FALSE;
374 gboolean need_unbox_tramp = FALSE;
375 MonoMethod *declaring = NULL;
376 MonoMethod *generic_virtual = NULL, *variant_iface = NULL, *orig_method = NULL;
378 gboolean virtual, variance_used = FALSE;
379 gpointer *orig_vtable_slot, *vtable_slot_to_patch = NULL;
380 MonoJitInfo *ji = NULL;
382 virtual = (gpointer)vtable_slot > (gpointer)vt;
384 orig_vtable_slot = vtable_slot;
385 vtable_slot_to_patch = vtable_slot;
387 #ifdef MONO_ARCH_HAVE_IMT
389 if (vt && (gpointer)vtable_slot < (gpointer)vt) {
390 MonoMethod *impl_method = NULL;
391 MonoObject *this_arg;
393 /* we get the interface method because mono_convert_imt_slot_to_vtable_slot ()
394 * needs the signature to be able to find the this argument
396 m = mono_arch_find_imt_method (regs, code);
397 vtable_slot = orig_vtable_slot;
398 g_assert (vtable_slot);
402 this_arg = mono_arch_get_this_arg_from_call (regs, code);
404 if (mono_object_is_transparent_proxy (this_arg)) {
405 /* Use the slow path for now */
406 m = mono_object_get_virtual_method (this_arg, m);
407 vtable_slot_to_patch = NULL;
410 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, regs, code, m, &impl_method, &need_rgctx_tramp, &variance_used, &addr);
411 /* This is the vcall slot which gets called through the IMT thunk */
412 vtable_slot_to_patch = vtable_slot;
413 /* mono_convert_imt_slot_to_vtable_slot () also gives us the method that is supposed
414 * to be called, so we compile it and go ahead as usual.
416 /*g_print ("imt found method %p (%s) at %p\n", impl_method, impl_method->name, code);*/
417 if (m->is_inflated && ((MonoMethodInflated*)m)->context.method_inst) {
418 /* Generic virtual method */
420 need_rgctx_tramp = TRUE;
421 } else if (variance_used && mono_class_has_variant_generic_params (m->klass)) {
425 if (addr && !generic_virtual && !variant_iface) {
427 * We found AOT compiled code for the method, skip the rest.
429 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
432 return mono_create_ftnptr (mono_domain_get (), addr);
441 * The virtual check is needed because is_generic_method_definition (m) could
442 * return TRUE for methods used in IMT calls too.
444 if (virtual && is_generic_method_definition (m)) {
445 MonoGenericContext context = { NULL, NULL };
446 MonoMethod *declaring;
449 declaring = mono_method_get_declaring_generic_method (m);
453 if (m->klass->generic_class)
454 context.class_inst = m->klass->generic_class->context.class_inst;
456 g_assert (!m->klass->generic_container);
458 #ifdef MONO_ARCH_HAVE_IMT
459 generic_virtual = mono_arch_find_imt_method (regs, code);
461 if (generic_virtual) {
462 g_assert (generic_virtual->is_inflated);
463 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
466 m = mono_class_inflate_generic_method (declaring, &context);
467 /* FIXME: only do this if the method is sharable */
468 need_rgctx_tramp = TRUE;
469 } else if ((context_used = mono_method_check_context_used (m))) {
470 MonoClass *klass = NULL;
471 MonoMethod *actual_method = NULL;
472 MonoVTable *vt = NULL;
473 MonoGenericInst *method_inst = NULL;
476 generic_shared = TRUE;
480 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
481 #ifdef MONO_ARCH_RGCTX_REG
482 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
484 klass = mrgctx->class_vtable->klass;
485 method_inst = mrgctx->method_inst;
487 g_assert_not_reached ();
489 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
490 #ifdef MONO_ARCH_RGCTX_REG
491 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
493 klass = vtable->klass;
495 g_assert_not_reached ();
498 #ifdef MONO_ARCH_HAVE_IMT
499 MonoObject *this_argument = mono_arch_get_this_arg_from_call (regs, code);
501 vt = this_argument->vtable;
502 vtable_slot = orig_vtable_slot;
504 g_assert (this_argument->vtable->klass->inited);
505 //mono_class_init (this_argument->vtable->klass);
508 mono_class_setup_supertypes (this_argument->vtable->klass);
509 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
516 g_assert (vtable_slot || klass);
519 int displacement = vtable_slot - ((gpointer*)vt);
521 g_assert_not_reached ();
523 g_assert (displacement > 0);
525 actual_method = vt->klass->vtable [displacement];
528 if (method_inst || m->wrapper_type) {
529 MonoGenericContext context = { NULL, NULL };
532 declaring = mono_method_get_declaring_generic_method (m);
536 if (klass->generic_class)
537 context.class_inst = klass->generic_class->context.class_inst;
538 else if (klass->generic_container)
539 context.class_inst = klass->generic_container->context.class_inst;
540 context.method_inst = method_inst;
542 actual_method = mono_class_inflate_generic_method (declaring, &context);
544 actual_method = mono_class_get_method_generic (klass, m);
548 g_assert (actual_method);
549 g_assert (actual_method->klass == klass);
551 if (actual_method->is_inflated)
552 declaring = mono_method_get_declaring_generic_method (actual_method);
559 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
560 m = mono_marshal_get_synchronized_wrapper (m);
561 need_rgctx_tramp = FALSE;
564 /* Calls made through delegates on platforms without delegate trampolines */
565 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
566 need_rgctx_tramp = TRUE;
568 addr = compiled_method = mono_compile_method (m);
571 mono_debugger_trampoline_compiled (code, m, addr);
573 if (generic_virtual || variant_iface) {
574 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
575 need_unbox_tramp = TRUE;
576 } else if (orig_vtable_slot) {
577 if (m->klass->valuetype)
578 need_unbox_tramp = TRUE;
581 addr = mini_add_method_trampoline (orig_method, m, compiled_method, need_rgctx_tramp, need_unbox_tramp);
583 if (generic_virtual || variant_iface) {
584 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
586 vtable_slot = orig_vtable_slot;
587 g_assert (vtable_slot);
589 mono_method_add_generic_virtual_invocation (mono_domain_get (),
596 /* the method was jumped to */
598 MonoDomain *domain = mono_domain_get ();
600 /* Patch the got entries pointing to this method */
602 * We do this here instead of in mono_codegen () to cover the case when m
603 * was loaded from an aot image.
605 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
608 mono_domain_lock (domain);
609 list = g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
611 for (tmp = list; tmp; tmp = tmp->next) {
612 gpointer *got_slot = tmp->data;
615 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
618 mono_domain_unlock (domain);
624 vtable_slot = orig_vtable_slot;
627 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))) {
628 g_assert (*vtable_slot_to_patch);
629 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
633 guint8 *plt_entry = mono_aot_get_plt_entry (code);
634 gboolean no_patch = FALSE;
635 MonoJitInfo *target_ji;
638 if (generic_shared) {
640 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
642 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
644 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
649 mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
651 if (generic_shared) {
652 if (m->wrapper_type != MONO_WRAPPER_NONE)
653 m = mono_marshal_method_from_wrapper (m);
654 //g_assert (mono_method_is_generic_sharable (m, FALSE));
657 /* Patch calling code */
659 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
661 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
663 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
665 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
666 * generic sharing fails.
667 * FIXME: Performance problem.
672 if (!no_patch && mono_method_same_domain (ji, target_ji))
673 mono_arch_patch_callsite (ji->code_start, code, addr);
681 * mono_magic_trampoline:
683 * This trampoline handles normal calls from JITted code.
686 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
690 return common_call_trampoline (regs, code, arg, tramp, NULL, NULL, FALSE);
694 * mono_vcall_trampoline:
696 * This trampoline handles virtual calls.
699 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
703 gpointer *vtable_slot;
705 gboolean need_rgctx_tramp = FALSE;
711 * We need to obtain the following pieces of information:
712 * - the method which needs to be compiled.
714 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
715 * the other two can be computed from the vtable + the slot index.
717 #ifndef MONO_ARCH_THIS_AS_FIRST_ARG
718 /* All architectures should support this */
719 g_assert_not_reached ();
723 * Obtain the vtable from the 'this' arg.
725 this = mono_arch_get_this_arg_from_call (regs, code);
731 /* Normal virtual call */
732 vtable_slot = &(vt->vtable [slot]);
734 /* Avoid loading metadata or creating a generic vtable if possible */
735 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot);
736 if (addr && !vt->klass->valuetype) {
737 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
740 return mono_create_ftnptr (mono_domain_get (), addr);
745 * is_generic_method_definition() above) also
746 * goes away if we do a
747 * mono_class_setup_vtable (vt->klass) here,
748 * because we then inflate the method
749 * correctly, put it in the cache, and the
750 * "wrong" inflation invocation still looks up
751 * the correctly inflated method.
753 * The hack above seems more stable and
756 m = mono_class_get_vtable_entry (vt->klass, slot);
758 need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (m, 0);
761 vtable_slot = &(((gpointer*)vt) [slot]);
764 need_rgctx_tramp = FALSE;
767 return common_call_trampoline (regs, code, m, tramp, vt, vtable_slot, need_rgctx_tramp);
770 #ifndef DISABLE_REMOTING
772 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
774 MonoGenericContext context = { NULL, NULL };
775 MonoMethod *imt_method, *declaring;
780 g_assert (m->is_generic);
783 declaring = mono_method_get_declaring_generic_method (m);
787 if (m->klass->generic_class)
788 context.class_inst = m->klass->generic_class->context.class_inst;
790 g_assert (!m->klass->generic_container);
792 #ifdef MONO_ARCH_HAVE_IMT
793 imt_method = mono_arch_find_imt_method (regs, code);
794 if (imt_method->is_inflated)
795 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
797 m = mono_class_inflate_generic_method (declaring, &context);
798 m = mono_marshal_get_remoting_invoke_with_check (m);
800 addr = mono_compile_method (m);
803 mono_debugger_trampoline_compiled (NULL, m, addr);
810 * mono_aot_trampoline:
812 * This trampoline handles calls made from AOT code. We try to bypass the
813 * normal JIT compilation logic to avoid loading the metadata for the method.
815 #ifdef MONO_ARCH_AOT_SUPPORTED
817 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
822 MonoMethod *method = NULL;
828 image = *(gpointer*)(gpointer)token_info;
829 token_info += sizeof (gpointer);
830 token = *(guint32*)(gpointer)token_info;
832 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token);
834 method = mono_get_method (image, token, NULL);
837 /* Use the generic code */
838 return mono_magic_trampoline (regs, code, method, tramp);
841 addr = mono_create_ftnptr (mono_domain_get (), addr);
843 /* This is a normal call through a PLT entry */
844 plt_entry = mono_aot_get_plt_entry (code);
845 g_assert (plt_entry);
847 mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
853 * mono_aot_plt_trampoline:
855 * This trampoline handles calls made from AOT code through the PLT table.
858 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
861 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
866 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code);
868 if (mono_loader_get_last_error ())
869 mono_raise_exception (mono_loader_error_prepare_exception (mono_loader_get_last_error ()));
870 // FIXME: Error handling (how ?)
879 * mono_class_init_trampoline:
881 * This method calls mono_runtime_class_init () to run the static constructor
882 * for the type, then patches the caller code so it is not called again.
885 mono_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
887 guint8 *plt_entry = mono_aot_get_plt_entry (code);
891 mono_runtime_class_init (vtable);
894 mono_arch_nullify_plt_entry (plt_entry, regs);
896 mono_arch_nullify_class_init_trampoline (code, regs);
901 * mono_generic_class_init_trampoline:
903 * This method calls mono_runtime_class_init () to run the static constructor
907 mono_generic_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
911 mono_runtime_class_init (vtable);
915 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
917 #ifdef MONO_ARCH_VTABLE_REG
918 static gboolean inited = FALSE;
919 static int num_lookups = 0;
920 guint32 slot = GPOINTER_TO_UINT (data);
921 mgreg_t *r = (mgreg_t*)regs;
922 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
923 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
924 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
929 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
936 return mono_method_fill_runtime_generic_context (arg, code, index);
938 return mono_class_fill_runtime_generic_context (arg, code, index);
940 g_assert_not_reached ();
945 mono_monitor_enter_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
947 mono_monitor_enter (obj);
951 mono_monitor_exit_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
953 mono_monitor_exit (obj);
956 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
959 * mono_delegate_trampoline:
961 * This trampoline handles calls made to Delegate:Invoke ().
962 * This is called once the first time a delegate is invoked, so it must be fast.
965 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
967 MonoDomain *domain = mono_domain_get ();
968 MonoDelegate *delegate;
971 MonoMethod *method = NULL;
972 gboolean multicast, callvirt = FALSE;
973 gboolean need_rgctx_tramp = FALSE;
974 gboolean need_unbox_tramp = FALSE;
975 gboolean enable_caching = TRUE;
976 MonoMethod *invoke = tramp_data [0];
977 guint8 *impl_this = tramp_data [1];
978 guint8 *impl_nothis = tramp_data [2];
980 MonoMethodSignature *sig;
981 gpointer addr, compiled_method;
985 /* Obtain the delegate object according to the calling convention */
986 delegate = mono_arch_get_this_arg_from_call (regs, code);
988 if (delegate->method) {
989 method = delegate->method;
992 * delegate->method_ptr == NULL means the delegate was initialized by
993 * mini_delegate_ctor, while != NULL means it is initialized by
994 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
995 * (ctor_with_method () does this, but it doesn't store the wrapper back into
998 #ifndef DISABLE_REMOTING
999 if (delegate->target && delegate->target->vtable->klass == mono_defaults.transparent_proxy_class) {
1001 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_class_get_com_object_class () &&
1002 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1004 method = mono_marshal_get_remoting_invoke (method);
1008 mono_error_init (&err);
1009 sig = mono_method_signature_checked (method, &err);
1011 mono_error_raise_exception (&err);
1013 if (sig->hasthis && method->klass->valuetype) {
1015 need_unbox_tramp = TRUE;
1017 method = mono_marshal_get_unbox_wrapper (method);
1021 ji = mono_jit_info_table_find (domain, mono_get_addr_from_ftnptr (delegate->method_ptr));
1023 method = ji->method;
1027 mono_error_init (&err);
1028 sig = mono_method_signature_checked (method, &err);
1030 mono_error_raise_exception (&err);
1032 callvirt = !delegate->target && sig->hasthis;
1033 if (delegate->target &&
1034 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1035 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1036 method->klass->flags & TYPE_ATTRIBUTE_ABSTRACT) {
1037 method = mono_object_get_virtual_method (delegate->target, method);
1038 enable_caching = FALSE;
1042 if (method && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1043 method = mono_marshal_get_synchronized_wrapper (method);
1045 if (method && mono_method_needs_static_rgctx_invoke (method, FALSE))
1046 need_rgctx_tramp = TRUE;
1049 * If the called address is a trampoline, replace it with the compiled method so
1050 * further calls don't have to go through the trampoline.
1052 if (method && !callvirt) {
1053 /* Avoid the overhead of looking up an already compiled method if possible */
1054 if (enable_caching && delegate->method_code && *delegate->method_code) {
1055 delegate->method_ptr = *delegate->method_code;
1057 compiled_method = addr = mono_compile_method (method);
1058 addr = mini_add_method_trampoline (NULL, method, compiled_method, need_rgctx_tramp, need_unbox_tramp);
1059 delegate->method_ptr = addr;
1060 if (enable_caching && delegate->method_code)
1061 *delegate->method_code = delegate->method_ptr;
1062 mono_debugger_trampoline_compiled (NULL, method, delegate->method_ptr);
1065 if (need_rgctx_tramp)
1066 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1069 multicast = ((MonoMulticastDelegate*)delegate)->prev != NULL;
1070 if (!multicast && !callvirt) {
1071 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1072 /* Closed static delegate */
1075 code = delegate->target ? impl_this : impl_nothis;
1078 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1083 /* The general, unoptimized case */
1084 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1085 code = mono_compile_method (m);
1086 code = mini_add_method_trampoline (NULL, m, code, mono_method_needs_static_rgctx_invoke (m, FALSE), FALSE);
1087 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1088 mono_debugger_trampoline_compiled (NULL, m, delegate->invoke_impl);
1095 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1097 mono_handler_block_guard_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
1101 MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
1102 gpointer resume_ip = jit_tls->handler_block_return_address;
1104 memcpy (&ctx, &jit_tls->handler_block_context, sizeof (MonoContext));
1105 MONO_CONTEXT_SET_IP (&ctx, jit_tls->handler_block_return_address);
1107 jit_tls->handler_block_return_address = NULL;
1108 jit_tls->handler_block = NULL;
1110 if (!resume_ip) /*this should not happen, but we should avoid crashing */
1111 exc = mono_get_exception_execution_engine ("Invalid internal state, resuming abort after handler block but no resume ip found");
1113 exc = mono_thread_resume_interruption ();
1116 static void (*restore_context) (MonoContext *);
1118 if (!restore_context)
1119 restore_context = mono_get_restore_context ();
1121 mono_handle_exception (&ctx, exc);
1122 restore_context (&ctx);
1129 mono_create_handler_block_trampoline (void)
1131 static gpointer code;
1133 if (mono_aot_only) {
1138 mono_trampolines_lock ();
1141 code = mono_arch_create_handler_block_trampoline ();
1143 mono_trampolines_unlock ();
1150 * mono_get_trampoline_func:
1152 * Return the C function which needs to be called by the generic trampoline of type
1156 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1158 switch (tramp_type) {
1159 case MONO_TRAMPOLINE_JIT:
1160 case MONO_TRAMPOLINE_JUMP:
1161 return mono_magic_trampoline;
1162 case MONO_TRAMPOLINE_CLASS_INIT:
1163 return mono_class_init_trampoline;
1164 case MONO_TRAMPOLINE_GENERIC_CLASS_INIT:
1165 return mono_generic_class_init_trampoline;
1166 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1167 return mono_rgctx_lazy_fetch_trampoline;
1168 #ifdef MONO_ARCH_AOT_SUPPORTED
1169 case MONO_TRAMPOLINE_AOT:
1170 return mono_aot_trampoline;
1171 case MONO_TRAMPOLINE_AOT_PLT:
1172 return mono_aot_plt_trampoline;
1174 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1175 case MONO_TRAMPOLINE_DELEGATE:
1176 return mono_delegate_trampoline;
1178 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1179 return mono_altstack_restore_prot;
1180 #ifndef DISABLE_REMOTING
1181 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1182 return mono_generic_virtual_remoting_trampoline;
1184 case MONO_TRAMPOLINE_MONITOR_ENTER:
1185 return mono_monitor_enter_trampoline;
1186 case MONO_TRAMPOLINE_MONITOR_EXIT:
1187 return mono_monitor_exit_trampoline;
1188 case MONO_TRAMPOLINE_VCALL:
1189 return mono_vcall_trampoline;
1190 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1191 case MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD:
1192 return mono_handler_block_guard_trampoline;
1195 g_assert_not_reached ();
1201 create_trampoline_code (MonoTrampolineType tramp_type)
1203 MonoTrampInfo *info;
1206 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1208 mono_save_trampoline_xdebug_info (info);
1209 if (mono_jit_map_is_enabled ())
1210 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1211 mono_tramp_info_free (info);
1218 mono_trampolines_init (void)
1220 InitializeCriticalSection (&trampolines_mutex);
1225 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1226 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1227 mono_trampoline_code [MONO_TRAMPOLINE_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_CLASS_INIT);
1228 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_CLASS_INIT);
1229 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1230 #ifdef MONO_ARCH_AOT_SUPPORTED
1231 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1232 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1234 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1235 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1237 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1238 #ifndef DISABLE_REMOTING
1239 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1241 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_ENTER] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_ENTER);
1242 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_EXIT] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_EXIT);
1243 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1244 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1245 mono_trampoline_code [MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD] = create_trampoline_code (MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD);
1246 mono_create_handler_block_trampoline ();
1249 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1250 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1251 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1252 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1256 mono_trampolines_cleanup (void)
1258 if (class_init_hash_addr)
1259 g_hash_table_destroy (class_init_hash_addr);
1260 if (rgctx_lazy_fetch_trampoline_hash)
1261 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1262 if (rgctx_lazy_fetch_trampoline_hash_addr)
1263 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1265 DeleteCriticalSection (&trampolines_mutex);
1269 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1271 g_assert (mono_trampoline_code [tramp_type]);
1273 return mono_trampoline_code [tramp_type];
1277 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1280 return mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, code_len);
1282 return mono_arch_create_specific_trampoline (arg1, tramp_type, domain, code_len);
1286 mono_create_class_init_trampoline (MonoVTable *vtable)
1289 MonoDomain *domain = vtable->domain;
1291 g_assert (!vtable->klass->generic_container);
1293 /* previously created trampoline code */
1294 mono_domain_lock (domain);
1296 g_hash_table_lookup (domain_jit_info (domain)->class_init_trampoline_hash,
1298 mono_domain_unlock (domain);
1302 code = mono_create_specific_trampoline (vtable, MONO_TRAMPOLINE_CLASS_INIT, domain, NULL);
1304 ptr = mono_create_ftnptr (domain, code);
1306 /* store trampoline address */
1307 mono_domain_lock (domain);
1308 g_hash_table_insert (domain_jit_info (domain)->class_init_trampoline_hash,
1310 mono_domain_unlock (domain);
1312 mono_trampolines_lock ();
1313 if (!class_init_hash_addr)
1314 class_init_hash_addr = g_hash_table_new (NULL, NULL);
1315 g_hash_table_insert (class_init_hash_addr, ptr, vtable);
1316 mono_trampolines_unlock ();
1322 mono_create_generic_class_init_trampoline (void)
1324 #ifdef MONO_ARCH_VTABLE_REG
1325 static gpointer code;
1326 MonoTrampInfo *info;
1328 mono_trampolines_lock ();
1332 /* get_named_code () might return an ftnptr, but our caller expects a direct pointer */
1333 code = mono_get_addr_from_ftnptr (mono_aot_get_trampoline ("generic_class_init_trampoline"));
1335 code = mono_arch_create_generic_class_init_trampoline (&info, FALSE);
1338 mono_save_trampoline_xdebug_info (info);
1339 if (mono_jit_map_is_enabled ())
1340 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1341 mono_tramp_info_free (info);
1346 mono_trampolines_unlock ();
1350 g_assert_not_reached ();
1355 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper)
1359 guint32 code_size = 0;
1361 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1363 * We cannot recover the correct type of a shared generic
1364 * method from its native code address, so we use the
1365 * trampoline instead.
1366 * For synchronized methods, the trampoline adds the wrapper.
1368 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1371 mono_domain_lock (domain);
1372 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1373 mono_domain_unlock (domain);
1377 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1378 g_assert (code_size);
1380 ji = mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1381 ji->code_start = code;
1382 ji->code_size = code_size;
1383 ji->method = method;
1386 * mono_delegate_ctor needs to find the method metadata from the
1387 * trampoline address, so we save it here.
1390 mono_jit_info_table_add (domain, ji);
1392 mono_domain_lock (domain);
1393 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1394 mono_domain_unlock (domain);
1396 return ji->code_start;
1400 mono_create_jit_trampoline_in_domain (MonoDomain *domain, MonoMethod *method)
1404 if (mono_aot_only) {
1405 /* Avoid creating trampolines if possible */
1406 gpointer code = mono_jit_find_compiled_method (domain, method);
1412 mono_domain_lock (domain);
1413 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1414 mono_domain_unlock (domain);
1418 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1420 mono_domain_lock (domain);
1421 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1422 mono_domain_unlock (domain);
1430 mono_create_jit_trampoline (MonoMethod *method)
1432 return mono_create_jit_trampoline_in_domain (mono_domain_get (), method);
1436 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
1440 MonoDomain *domain = mono_domain_get ();
1441 guint8 *buf, *start;
1443 buf = start = mono_domain_alloc0 (domain, 2 * sizeof (gpointer));
1445 *(gpointer*)(gpointer)buf = image;
1446 buf += sizeof (gpointer);
1447 *(guint32*)(gpointer)buf = token;
1449 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
1457 mono_create_delegate_trampoline (MonoDomain *domain, MonoClass *klass)
1459 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1461 guint32 code_size = 0;
1462 gpointer *tramp_data;
1465 mono_domain_lock (domain);
1466 ptr = g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, klass);
1467 mono_domain_unlock (domain);
1471 // Precompute the delegate invoke impl and pass it to the delegate trampoline
1472 invoke = mono_get_delegate_invoke (klass);
1475 tramp_data = mono_domain_alloc (domain, sizeof (gpointer) * 3);
1476 tramp_data [0] = invoke;
1477 tramp_data [1] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1478 tramp_data [2] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1480 ptr = mono_create_specific_trampoline (tramp_data, MONO_TRAMPOLINE_DELEGATE, domain, &code_size);
1481 g_assert (code_size);
1483 /* store trampoline address */
1484 mono_domain_lock (domain);
1485 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash,
1487 mono_domain_unlock (domain);
1496 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1498 static gboolean inited = FALSE;
1499 static int num_trampolines = 0;
1500 MonoTrampInfo *info;
1502 gpointer tramp, ptr;
1505 return mono_aot_get_lazy_fetch_trampoline (offset);
1507 mono_trampolines_lock ();
1508 if (rgctx_lazy_fetch_trampoline_hash)
1509 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1512 mono_trampolines_unlock ();
1516 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1518 mono_save_trampoline_xdebug_info (info);
1519 if (mono_jit_map_is_enabled ())
1520 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1521 mono_tramp_info_free (info);
1523 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1525 mono_trampolines_lock ();
1526 if (!rgctx_lazy_fetch_trampoline_hash) {
1527 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1528 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1530 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1531 g_assert (offset != -1);
1532 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1533 mono_trampolines_unlock ();
1536 mono_counters_register ("RGCTX num lazy fetch trampolines",
1537 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1546 mono_create_monitor_enter_trampoline (void)
1548 static gpointer code;
1550 if (mono_aot_only) {
1552 code = mono_aot_get_trampoline ("monitor_enter_trampoline");
1556 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1557 mono_trampolines_lock ();
1560 MonoTrampInfo *info;
1562 code = mono_arch_create_monitor_enter_trampoline (&info, FALSE);
1564 mono_save_trampoline_xdebug_info (info);
1565 if (mono_jit_map_is_enabled ())
1566 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1567 mono_tramp_info_free (info);
1571 mono_trampolines_unlock ();
1574 g_assert_not_reached ();
1581 mono_create_monitor_exit_trampoline (void)
1583 static gpointer code;
1585 if (mono_aot_only) {
1587 code = mono_aot_get_trampoline ("monitor_exit_trampoline");
1591 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1592 mono_trampolines_lock ();
1595 MonoTrampInfo *info;
1597 code = mono_arch_create_monitor_exit_trampoline (&info, FALSE);
1599 mono_save_trampoline_xdebug_info (info);
1600 if (mono_jit_map_is_enabled ())
1601 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1602 mono_tramp_info_free (info);
1606 mono_trampolines_unlock ();
1609 g_assert_not_reached ();
1614 #ifdef MONO_ARCH_LLVM_SUPPORTED
1616 * mono_create_llvm_imt_trampoline:
1618 * LLVM compiled code can't pass in the IMT argument, so we use this trampoline, which
1619 * sets the IMT argument, then branches to the contents of the vtable slot given by
1620 * vt_offset in the vtable which is obtained from the argument list.
1623 mono_create_llvm_imt_trampoline (MonoDomain *domain, MonoMethod *m, int vt_offset)
1625 #ifdef MONO_ARCH_HAVE_LLVM_IMT_TRAMPOLINE
1626 return mono_arch_get_llvm_imt_trampoline (domain, m, vt_offset);
1628 g_assert_not_reached ();
1635 mono_find_class_init_trampoline_by_addr (gconstpointer addr)
1639 mono_trampolines_lock ();
1640 if (class_init_hash_addr)
1641 res = g_hash_table_lookup (class_init_hash_addr, addr);
1644 mono_trampolines_unlock ();
1649 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1653 mono_trampolines_lock ();
1654 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1655 /* We store the real offset + 1 so we can detect when the lookup fails */
1656 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1664 mono_trampolines_unlock ();
1668 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1672 "generic_class_init",
1677 "restore_stack_prot",
1678 #ifndef DISABLE_REMOTING
1679 "generic_virtual_remoting",
1684 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1685 "handler_block_guard"
1690 * mono_get_generic_trampoline_name:
1692 * Returns a pointer to malloc-ed memory.
1695 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1697 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1701 * mono_get_rgctx_fetch_trampoline_name:
1703 * Returns a pointer to malloc-ed memory.
1706 mono_get_rgctx_fetch_trampoline_name (int slot)
1711 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1712 index = MONO_RGCTX_SLOT_INDEX (slot);
1714 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);