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>
16 #include <mono/utils/mono-compiler.h>
21 * Address of the trampoline code. This is used by the debugger to check
22 * whether a method is a trampoline.
24 guint8* mono_trampoline_code [MONO_TRAMPOLINE_NUM];
26 static GHashTable *class_init_hash_addr;
27 static GHashTable *rgctx_lazy_fetch_trampoline_hash;
28 static GHashTable *rgctx_lazy_fetch_trampoline_hash_addr;
29 static guint32 trampoline_calls, jit_trampolines, unbox_trampolines, static_rgctx_trampolines;
31 #define mono_trampolines_lock() mono_mutex_lock (&trampolines_mutex)
32 #define mono_trampolines_unlock() mono_mutex_unlock (&trampolines_mutex)
33 static mono_mutex_t trampolines_mutex;
35 #ifdef MONO_ARCH_GSHARED_SUPPORTED
43 rgctx_tramp_info_equal (gconstpointer ka, gconstpointer kb)
45 const RgctxTrampInfo *i1 = ka;
46 const RgctxTrampInfo *i2 = kb;
48 if (i1->m == i2->m && i1->addr == i2->addr)
55 rgctx_tramp_info_hash (gconstpointer data)
57 const RgctxTrampInfo *info = data;
59 return GPOINTER_TO_UINT (info->m) ^ GPOINTER_TO_UINT (info->addr);
63 * mono_create_static_rgctx_trampoline:
64 * @m: the mono method to create a trampoline for
65 * @addr: the address to jump to (where the compiled code for M lives)
67 * Creates a static rgctx trampoline for M which branches to ADDR which should
68 * point to the compiled code of M.
70 * Static rgctx trampolines are used when a shared generic method which doesn't
71 * have a this argument is called indirectly, ie. from code which can't pass in
72 * the rgctx argument. The trampoline sets the rgctx argument and jumps to the
73 * methods code. These trampolines are similar to the unbox trampolines, they
74 * perform the same task as the static rgctx wrappers, but they are smaller/faster,
75 * and can be made to work with full AOT.
77 * On PPC addr should be an ftnptr and the return value is an ftnptr too.
79 * Returns the generated static rgctx trampoline.
82 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
87 RgctxTrampInfo tmp_info;
90 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
91 g_assert (((gpointer*)addr) [2] == 0);
94 ctx = mini_method_get_rgctx (m);
96 domain = mono_domain_get ();
99 * In the AOT case, addr might point to either the method, or to an unbox trampoline,
100 * so make the hash keyed on the m+addr pair.
102 mono_domain_lock (domain);
103 if (!domain_jit_info (domain)->static_rgctx_trampoline_hash)
104 domain_jit_info (domain)->static_rgctx_trampoline_hash = g_hash_table_new (rgctx_tramp_info_hash, rgctx_tramp_info_equal);
106 tmp_info.addr = addr;
107 res = g_hash_table_lookup (domain_jit_info (domain)->static_rgctx_trampoline_hash,
109 mono_domain_unlock (domain);
114 res = mono_aot_get_static_rgctx_trampoline (ctx, addr);
116 res = mono_arch_get_static_rgctx_trampoline (m, ctx, addr);
118 mono_domain_lock (domain);
119 /* Duplicates inserted while we didn't hold the lock are OK */
120 info = mono_domain_alloc (domain, sizeof (RgctxTrampInfo));
123 g_hash_table_insert (domain_jit_info (domain)->static_rgctx_trampoline_hash, info, res);
124 mono_domain_unlock (domain);
126 static_rgctx_trampolines ++;
132 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
135 * This shouldn't happen as all arches which support generic sharing support
136 * static rgctx trampolines as well.
138 g_assert_not_reached ();
143 * Either IMPL_METHOD or AOT_ADDR will be set on return.
145 * MONO_NEVER_INLINE :
146 * This works against problems when compiling with gcc 4.6 on arm. The 'then' part of
147 * this line gets executed, even when the condition is false:
148 * if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
149 * *need_rgctx_tramp = TRUE;
151 static MONO_NEVER_INLINE gpointer*
152 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)
154 MonoObject *this_argument = mono_arch_get_this_arg_from_call (regs, code);
155 MonoVTable *vt = this_argument->vtable;
156 int displacement = slot - ((gpointer*)vt);
158 if (displacement > 0) {
159 /* slot is in the vtable, not in the IMT */
161 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p is in the vtable, not in the IMT\n", slot);
165 MonoMethod *imt_method = mono_arch_find_imt_method (regs, code);
167 int interface_offset;
168 int imt_slot = MONO_IMT_SIZE + displacement;
170 /*This has to be variance aware since imt_method can be from an interface that vt->klass doesn't directly implement*/
171 interface_offset = mono_class_interface_offset_with_variance (vt->klass, imt_method->klass, variance_used);
173 if (interface_offset < 0) {
174 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));
176 mono_vtable_build_imt_slot (vt, mono_method_get_imt_slot (imt_method));
178 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
180 MonoGenericContext context = { NULL, NULL };
183 * Generic virtual method, imt_method contains the inflated interface
184 * method, need to get the inflated impl method.
186 /* imt_method->slot might not be set */
187 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_declaring_generic_method (imt_method)->slot);
189 if (impl->klass->generic_class)
190 context.class_inst = impl->klass->generic_class->context.class_inst;
191 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
192 impl = mono_class_inflate_generic_method_checked (impl, &context, &error);
193 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
195 /* Avoid loading metadata or creating a generic vtable if possible */
196 if (lookup_aot && !vt->klass->valuetype)
197 *aot_addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, interface_offset + mono_method_get_vtable_slot (imt_method));
203 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_vtable_slot (imt_method));
206 if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
207 *need_rgctx_tramp = TRUE;
208 if (impl && impl->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
209 WrapperInfo *info = mono_marshal_get_wrapper_info (impl);
211 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
212 *need_rgctx_tramp = TRUE;
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);
246 * This is a super-ugly hack to fix bug #616463.
248 * The problem is that we don't always set is_generic for generic
249 * method definitions. See the comment at the end of
250 * mono_class_inflate_generic_method_full_checked() in class.c.
253 is_generic_method_definition (MonoMethod *m)
255 MonoGenericContext *context;
261 context = mono_method_get_context (m);
262 if (!context->method_inst)
264 if (context->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)m)->declaring)->context.method_inst)
270 mini_jit_info_is_gsharedvt (MonoJitInfo *ji)
272 if (ji && ji->has_generic_jit_info && (mono_jit_info_get_generic_sharing_context (ji)->var_is_vt ||
273 mono_jit_info_get_generic_sharing_context (ji)->mvar_is_vt))
280 * mini_add_method_trampoline:
281 * @orig_method: the method the caller originally called i.e. an iface method, or NULL.
284 * @add_static_rgctx_tramp: adds a static rgctx trampoline
285 * @add_unbox_tramp: adds an unboxing trampoline
287 * Add static rgctx/gsharedvt_in/unbox trampolines to
288 * M/COMPILED_METHOD if needed.
290 * Returns the trampoline address, or COMPILED_METHOD if no trampoline
294 mini_add_method_trampoline (MonoMethod *orig_method, MonoMethod *m, gpointer compiled_method, gboolean add_static_rgctx_tramp, gboolean add_unbox_tramp)
296 gpointer addr = compiled_method;
297 gboolean callee_gsharedvt, callee_array_helper;
298 MonoMethod *jmethod = NULL;
301 // FIXME: This loads information from AOT (perf problem)
302 ji = mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
303 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
305 callee_array_helper = FALSE;
306 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
307 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
310 * generic array helpers.
311 * Have to replace the wrappers with the original generic instances.
313 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
314 callee_array_helper = TRUE;
315 m = info->d.generic_array_helper.method;
317 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
318 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
320 /* Same for synchronized inner wrappers */
321 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
322 m = info->d.synchronized_inner.method;
329 if (callee_gsharedvt)
330 g_assert (m->is_inflated);
332 addr = compiled_method;
334 if (add_unbox_tramp) {
336 * The unbox trampolines call the method directly, so need to add
337 * an rgctx tramp before them.
340 addr = mono_aot_get_unbox_trampoline (m);
342 unbox_trampolines ++;
343 addr = mono_arch_get_unbox_trampoline (m, addr);
348 jmethod = jinfo_get_method (ji);
349 if (callee_gsharedvt && mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod))) {
350 MonoGenericSharingContext *gsctx;
351 MonoMethodSignature *sig, *gsig;
353 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
355 /* Call from normal/gshared code to gsharedvt code with variable signature */
356 gsctx = mono_jit_info_get_generic_sharing_context (ji);
358 sig = mono_method_signature (m);
359 gsig = mono_method_signature (jmethod);
361 addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, gsctx, -1, FALSE);
363 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
366 if (callee_array_helper) {
367 add_static_rgctx_tramp = FALSE;
368 /* FIXME: ji->from_aot is not set for llvm methods */
369 if (ji && (ji->from_aot || mono_aot_only)) {
370 /* In AOT mode, compiled_method points to one of the InternalArray methods in Array. */
371 if (mono_method_needs_static_rgctx_invoke (jinfo_get_method (ji), TRUE))
372 add_static_rgctx_tramp = TRUE;
376 if (add_static_rgctx_tramp)
377 addr = mono_create_static_rgctx_trampoline (m, addr);
383 * common_call_trampoline:
385 * The code to handle normal, virtual, and interface method calls and jumps, both
386 * from JITted and LLVM compiled code.
389 common_call_trampoline_inner (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8* tramp, MonoVTable *vt, gpointer *vtable_slot, gboolean need_rgctx_tramp)
391 gpointer addr, compiled_method;
392 gboolean generic_shared = FALSE;
393 gboolean need_unbox_tramp = FALSE;
394 MonoMethod *declaring = NULL;
395 MonoMethod *generic_virtual = NULL, *variant_iface = NULL, *orig_method = NULL;
397 gboolean virtual, variance_used = FALSE;
398 gpointer *orig_vtable_slot, *vtable_slot_to_patch = NULL;
399 MonoJitInfo *ji = NULL;
401 virtual = (gpointer)vtable_slot > (gpointer)vt;
403 orig_vtable_slot = vtable_slot;
404 vtable_slot_to_patch = vtable_slot;
407 if (vt && (gpointer)vtable_slot < (gpointer)vt) {
408 MonoMethod *impl_method = NULL;
409 MonoObject *this_arg;
411 /* we get the interface method because mono_convert_imt_slot_to_vtable_slot ()
412 * needs the signature to be able to find the this argument
414 m = mono_arch_find_imt_method (regs, code);
415 vtable_slot = orig_vtable_slot;
416 g_assert (vtable_slot);
420 this_arg = mono_arch_get_this_arg_from_call (regs, code);
422 if (mono_object_is_transparent_proxy (this_arg)) {
423 /* Use the slow path for now */
424 m = mono_object_get_virtual_method (this_arg, m);
425 vtable_slot_to_patch = NULL;
429 mono_class_interface_offset_with_variance (vt->klass, m->klass, &variance_used);
431 if (m->is_inflated && ((MonoMethodInflated*)m)->context.method_inst) {
432 /* Generic virtual method */
434 need_rgctx_tramp = TRUE;
435 } else if (variance_used && mono_class_has_variant_generic_params (m->klass)) {
440 /* We can only use the AOT compiled code if we don't require further processing */
441 lookup_aot = !generic_virtual & !variant_iface;
442 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, regs, code, m, lookup_aot, &impl_method, &need_rgctx_tramp, &variance_used, &addr);
443 /* This is the vcall slot which gets called through the IMT thunk */
444 vtable_slot_to_patch = vtable_slot;
445 /* mono_convert_imt_slot_to_vtable_slot () also gives us the method that is supposed
446 * to be called, so we compile it and go ahead as usual.
448 /*g_print ("imt found method %p (%s) at %p\n", impl_method, impl_method->name, code);*/
452 * We found AOT compiled code for the method, skip the rest.
454 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
457 return mono_create_ftnptr (mono_domain_get (), addr);
465 * The virtual check is needed because is_generic_method_definition (m) could
466 * return TRUE for methods used in IMT calls too.
468 if (virtual && is_generic_method_definition (m)) {
470 MonoGenericContext context = { NULL, NULL };
471 MonoMethod *declaring;
474 declaring = mono_method_get_declaring_generic_method (m);
478 if (m->klass->generic_class)
479 context.class_inst = m->klass->generic_class->context.class_inst;
481 g_assert (!m->klass->generic_container);
483 generic_virtual = mono_arch_find_imt_method (regs, code);
484 if (generic_virtual) {
485 g_assert (generic_virtual->is_inflated);
486 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
489 m = mono_class_inflate_generic_method_checked (declaring, &context, &error);
490 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
491 /* FIXME: only do this if the method is sharable */
492 need_rgctx_tramp = TRUE;
493 } else if ((context_used = mono_method_check_context_used (m))) {
494 MonoClass *klass = NULL;
495 MonoMethod *actual_method = NULL;
496 MonoVTable *vt = NULL;
497 MonoGenericInst *method_inst = NULL;
500 generic_shared = TRUE;
504 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
505 #ifdef MONO_ARCH_RGCTX_REG
506 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
508 klass = mrgctx->class_vtable->klass;
509 method_inst = mrgctx->method_inst;
511 g_assert_not_reached ();
513 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
514 #ifdef MONO_ARCH_RGCTX_REG
515 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
517 klass = vtable->klass;
519 g_assert_not_reached ();
522 MonoObject *this_argument = mono_arch_get_this_arg_from_call (regs, code);
524 vt = this_argument->vtable;
525 vtable_slot = orig_vtable_slot;
527 g_assert (this_argument->vtable->klass->inited);
528 //mono_class_init (this_argument->vtable->klass);
531 mono_class_setup_supertypes (this_argument->vtable->klass);
532 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
536 g_assert (vtable_slot || klass);
539 int displacement = vtable_slot - ((gpointer*)vt);
541 g_assert_not_reached ();
543 g_assert (displacement > 0);
545 actual_method = vt->klass->vtable [displacement];
548 if (method_inst || m->wrapper_type) {
550 MonoGenericContext context = { NULL, NULL };
553 declaring = mono_method_get_declaring_generic_method (m);
557 if (klass->generic_class)
558 context.class_inst = klass->generic_class->context.class_inst;
559 else if (klass->generic_container)
560 context.class_inst = klass->generic_container->context.class_inst;
561 context.method_inst = method_inst;
563 actual_method = mono_class_inflate_generic_method_checked (declaring, &context, &error);
564 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
566 actual_method = mono_class_get_method_generic (klass, m);
570 g_assert (actual_method);
571 g_assert (actual_method->klass == klass);
573 if (actual_method->is_inflated)
574 declaring = mono_method_get_declaring_generic_method (actual_method);
581 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
582 m = mono_marshal_get_synchronized_wrapper (m);
583 need_rgctx_tramp = FALSE;
586 /* Calls made through delegates on platforms without delegate trampolines */
587 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
588 need_rgctx_tramp = TRUE;
590 addr = compiled_method = mono_compile_method (m);
593 if (generic_virtual || variant_iface) {
594 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
595 need_unbox_tramp = TRUE;
596 } else if (orig_vtable_slot) {
597 if (m->klass->valuetype)
598 need_unbox_tramp = TRUE;
601 addr = mini_add_method_trampoline (orig_method, m, compiled_method, need_rgctx_tramp, need_unbox_tramp);
603 if (generic_virtual || variant_iface) {
604 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
606 vtable_slot = orig_vtable_slot;
607 g_assert (vtable_slot);
609 mono_method_add_generic_virtual_invocation (mono_domain_get (),
616 /* the method was jumped to */
618 MonoDomain *domain = mono_domain_get ();
620 /* Patch the got entries pointing to this method */
622 * We do this here instead of in mono_codegen () to cover the case when m
623 * was loaded from an aot image.
625 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
628 mono_domain_lock (domain);
629 list = g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
631 for (tmp = list; tmp; tmp = tmp->next) {
632 gpointer *got_slot = tmp->data;
635 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
638 mono_domain_unlock (domain);
644 vtable_slot = orig_vtable_slot;
647 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))) {
648 g_assert (*vtable_slot_to_patch);
649 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
653 guint8 *plt_entry = mono_aot_get_plt_entry (code);
654 gboolean no_patch = FALSE;
655 MonoJitInfo *target_ji;
658 if (generic_shared) {
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) {
669 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, addr);
671 if (generic_shared) {
672 if (m->wrapper_type != MONO_WRAPPER_NONE)
673 m = mono_marshal_method_from_wrapper (m);
674 //g_assert (mono_method_is_generic_sharable (m, FALSE));
677 /* Patch calling code */
679 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
681 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
683 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
685 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
686 * generic sharing fails.
687 * FIXME: Performance problem.
692 if (!no_patch && mono_method_same_domain (ji, target_ji))
693 mono_arch_patch_callsite (ji->code_start, code, addr);
701 common_call_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8* tramp, MonoVTable *vt, gpointer *vtable_slot, gboolean need_rgctx_tramp)
704 MONO_PREPARE_RESET_BLOCKING
705 res = common_call_trampoline_inner (regs, code, m, tramp, vt, vtable_slot, need_rgctx_tramp);
706 MONO_FINISH_RESET_BLOCKING
711 * mono_magic_trampoline:
713 * This trampoline handles normal calls from JITted code.
716 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
720 return common_call_trampoline (regs, code, arg, tramp, NULL, NULL, FALSE);
724 * mono_vcall_trampoline:
726 * This trampoline handles virtual calls.
729 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
733 gpointer *vtable_slot;
735 gboolean need_rgctx_tramp = FALSE;
741 * We need to obtain the following pieces of information:
742 * - the method which needs to be compiled.
744 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
745 * the other two can be computed from the vtable + the slot index.
749 * Obtain the vtable from the 'this' arg.
751 this = mono_arch_get_this_arg_from_call (regs, code);
757 /* Normal virtual call */
758 vtable_slot = &(vt->vtable [slot]);
760 /* Avoid loading metadata or creating a generic vtable if possible */
761 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot);
762 if (addr && !vt->klass->valuetype) {
763 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
766 return mono_create_ftnptr (mono_domain_get (), addr);
771 * is_generic_method_definition() above) also
772 * goes away if we do a
773 * mono_class_setup_vtable (vt->klass) here,
774 * because we then inflate the method
775 * correctly, put it in the cache, and the
776 * "wrong" inflation invocation still looks up
777 * the correctly inflated method.
779 * The hack above seems more stable and
782 m = mono_class_get_vtable_entry (vt->klass, slot);
784 need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (m, 0);
787 vtable_slot = &(((gpointer*)vt) [slot]);
790 need_rgctx_tramp = FALSE;
793 return common_call_trampoline (regs, code, m, tramp, vt, vtable_slot, need_rgctx_tramp);
796 #ifndef DISABLE_REMOTING
798 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
801 MonoGenericContext context = { NULL, NULL };
802 MonoMethod *imt_method, *declaring;
807 g_assert (m->is_generic);
810 declaring = mono_method_get_declaring_generic_method (m);
814 if (m->klass->generic_class)
815 context.class_inst = m->klass->generic_class->context.class_inst;
817 g_assert (!m->klass->generic_container);
819 imt_method = mono_arch_find_imt_method (regs, code);
820 if (imt_method->is_inflated)
821 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
822 m = mono_class_inflate_generic_method_checked (declaring, &context, &error);
823 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */;
824 m = mono_marshal_get_remoting_invoke_with_check (m);
826 addr = mono_compile_method (m);
834 * mono_aot_trampoline:
836 * This trampoline handles calls made from AOT code. We try to bypass the
837 * normal JIT compilation logic to avoid loading the metadata for the method.
839 #ifdef MONO_ARCH_AOT_SUPPORTED
841 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
846 MonoMethod *method = NULL;
852 image = *(gpointer*)(gpointer)token_info;
853 token_info += sizeof (gpointer);
854 token = *(guint32*)(gpointer)token_info;
856 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token);
858 method = mono_get_method (image, token, NULL);
861 /* Use the generic code */
862 return mono_magic_trampoline (regs, code, method, tramp);
865 addr = mono_create_ftnptr (mono_domain_get (), addr);
867 /* This is a normal call through a PLT entry */
868 plt_entry = mono_aot_get_plt_entry (code);
869 g_assert (plt_entry);
871 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, addr);
877 * mono_aot_plt_trampoline:
879 * This trampoline handles calls made from AOT code through the PLT table.
882 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
885 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
890 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code);
892 if (mono_loader_get_last_error ())
893 mono_raise_exception (mono_loader_error_prepare_exception (mono_loader_get_last_error ()));
894 // FIXME: Error handling (how ?)
903 * mono_class_init_trampoline:
905 * This method calls mono_runtime_class_init () to run the static constructor
906 * for the type, then patches the caller code so it is not called again.
909 mono_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
911 guint8 *plt_entry = mono_aot_get_plt_entry (code);
915 mono_runtime_class_init (vtable);
917 if (vtable->initialized) {
919 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, mini_get_nullified_class_init_trampoline ());
921 mono_arch_nullify_class_init_trampoline (code, regs);
926 * mono_generic_class_init_trampoline:
928 * This method calls mono_runtime_class_init () to run the static constructor
932 mono_generic_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
936 mono_runtime_class_init (vtable);
940 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
942 #ifdef MONO_ARCH_VTABLE_REG
943 static gboolean inited = FALSE;
944 static int num_lookups = 0;
945 guint32 slot = GPOINTER_TO_UINT (data);
946 mgreg_t *r = (mgreg_t*)regs;
947 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
948 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
949 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
954 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
961 return mono_method_fill_runtime_generic_context (arg, code, index);
963 return mono_class_fill_runtime_generic_context (arg, code, index);
965 g_assert_not_reached ();
970 mono_monitor_enter_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
972 mono_monitor_enter (obj);
976 mono_monitor_enter_v4_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
978 #ifdef MONO_ARCH_MONITOR_LOCK_TAKEN_REG
979 char *lock_taken = (char*)regs [MONO_ARCH_MONITOR_LOCK_TAKEN_REG];
980 mono_monitor_enter_v4 (obj, lock_taken);
982 g_assert_not_reached ();
987 mono_monitor_exit_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
989 mono_monitor_exit (obj);
992 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
995 * Precompute data to speed up mono_delegate_trampoline ().
996 * METHOD might be NULL.
998 static MonoDelegateTrampInfo*
999 create_delegate_trampoline_data (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1001 MonoDelegateTrampInfo *tramp_data;
1005 // Precompute the delegate invoke impl and pass it to the delegate trampoline
1006 invoke = mono_get_delegate_invoke (klass);
1009 tramp_data = mono_domain_alloc0 (domain, sizeof (MonoDelegateTrampInfo));
1010 tramp_data->invoke = invoke;
1011 tramp_data->invoke_sig = mono_method_signature (invoke);
1012 tramp_data->impl_this = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1013 tramp_data->impl_nothis = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1014 tramp_data->method = method;
1016 mono_error_init (&err);
1017 tramp_data->sig = mono_method_signature_checked (method, &err);
1018 tramp_data->need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (method, FALSE);
1025 * mono_delegate_trampoline:
1027 * This trampoline handles calls made to Delegate:Invoke ().
1028 * This is called once the first time a delegate is invoked, so it must be fast.
1031 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *arg, guint8* tramp)
1033 MonoDomain *domain = mono_domain_get ();
1034 MonoDelegate *delegate;
1037 MonoMethod *method = NULL;
1038 gboolean multicast, callvirt = FALSE, closed_over_null = FALSE;
1039 gboolean need_rgctx_tramp = FALSE;
1040 gboolean need_unbox_tramp = FALSE;
1041 gboolean enable_caching = TRUE;
1042 MonoDelegateTrampInfo *tramp_info = (MonoDelegateTrampInfo*)arg;
1043 MonoMethod *invoke = tramp_info->invoke;
1044 guint8 *impl_this = tramp_info->impl_this;
1045 guint8 *impl_nothis = tramp_info->impl_nothis;
1047 MonoMethodSignature *sig;
1048 gpointer addr, compiled_method;
1049 gboolean is_remote = FALSE;
1051 trampoline_calls ++;
1053 /* Obtain the delegate object according to the calling convention */
1054 delegate = mono_arch_get_this_arg_from_call (regs, code);
1056 if (delegate->method) {
1057 method = delegate->method;
1060 * delegate->method_ptr == NULL means the delegate was initialized by
1061 * mini_delegate_ctor, while != NULL means it is initialized by
1062 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
1063 * (ctor_with_method () does this, but it doesn't store the wrapper back into
1064 * delegate->method).
1066 #ifndef DISABLE_REMOTING
1067 if (delegate->target && delegate->target->vtable->klass == mono_defaults.transparent_proxy_class) {
1070 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_class_get_com_object_class () &&
1071 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1073 method = mono_marshal_get_remoting_invoke (method);
1077 sig = tramp_info->sig;
1078 if (!(sig && method == tramp_info->method)) {
1079 mono_error_init (&err);
1080 sig = mono_method_signature_checked (method, &err);
1082 mono_error_raise_exception (&err);
1085 if (sig->hasthis && method->klass->valuetype) {
1087 need_unbox_tramp = TRUE;
1089 method = mono_marshal_get_unbox_wrapper (method);
1093 ji = mono_jit_info_table_find (domain, mono_get_addr_from_ftnptr (delegate->method_ptr));
1095 method = jinfo_get_method (ji);
1099 sig = tramp_info->sig;
1100 if (!(sig && method == tramp_info->method)) {
1101 mono_error_init (&err);
1102 sig = mono_method_signature_checked (method, &err);
1104 mono_error_raise_exception (&err);
1107 callvirt = !delegate->target && sig->hasthis;
1109 closed_over_null = tramp_info->invoke_sig->param_count == sig->param_count;
1111 if (callvirt && !closed_over_null) {
1113 * The delegate needs to make a virtual call to the target method using its
1114 * first argument as the receiver. This is hard to support in full-aot, so
1115 * optimize it in some cases if possible.
1116 * If the target method is not virtual or is in a sealed class,
1117 * the vcall will call it directly.
1118 * If the call doesn't return a valuetype, then the vcall uses the same calling
1119 * convention as a normal call.
1121 if (((method->klass->flags & TYPE_ATTRIBUTE_SEALED) || !(method->flags & METHOD_ATTRIBUTE_VIRTUAL)) && !MONO_TYPE_ISSTRUCT (sig->ret)) {
1123 enable_caching = FALSE;
1127 if (delegate->target &&
1128 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1129 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1130 method->klass->flags & TYPE_ATTRIBUTE_ABSTRACT) {
1131 method = mono_object_get_virtual_method (delegate->target, method);
1132 enable_caching = FALSE;
1135 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1136 method = mono_marshal_get_synchronized_wrapper (method);
1138 if (method == tramp_info->method)
1139 need_rgctx_tramp = tramp_info->need_rgctx_tramp;
1140 else if (mono_method_needs_static_rgctx_invoke (method, FALSE))
1141 need_rgctx_tramp = TRUE;
1145 * If the called address is a trampoline, replace it with the compiled method so
1146 * further calls don't have to go through the trampoline.
1148 if (method && !callvirt) {
1149 /* Avoid the overhead of looking up an already compiled method if possible */
1150 if (enable_caching && delegate->method_code && *delegate->method_code) {
1151 delegate->method_ptr = *delegate->method_code;
1153 compiled_method = addr = mono_compile_method (method);
1154 addr = mini_add_method_trampoline (NULL, method, compiled_method, need_rgctx_tramp, need_unbox_tramp);
1155 delegate->method_ptr = addr;
1156 if (enable_caching && delegate->method_code)
1157 *delegate->method_code = delegate->method_ptr;
1160 if (need_rgctx_tramp)
1161 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1164 /* Necessary for !code condition to fallback to slow path */
1167 multicast = ((MonoMulticastDelegate*)delegate)->prev != NULL;
1168 if (!multicast && !callvirt) {
1169 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1170 /* Closed static delegate */
1173 code = delegate->target ? impl_this : impl_nothis;
1177 /* The general, unoptimized case */
1178 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1179 code = mono_compile_method (m);
1180 code = mini_add_method_trampoline (NULL, m, code, mono_method_needs_static_rgctx_invoke (m, FALSE), FALSE);
1183 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1184 if (enable_caching && !callvirt && tramp_info->method) {
1185 tramp_info->method_ptr = delegate->method_ptr;
1186 tramp_info->invoke_impl = delegate->invoke_impl;
1194 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1196 mono_handler_block_guard_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_info, guint8* tramp)
1200 MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
1201 gpointer resume_ip = jit_tls->handler_block_return_address;
1203 memcpy (&ctx, &jit_tls->handler_block_context, sizeof (MonoContext));
1204 MONO_CONTEXT_SET_IP (&ctx, jit_tls->handler_block_return_address);
1206 jit_tls->handler_block_return_address = NULL;
1207 jit_tls->handler_block = NULL;
1209 if (!resume_ip) /*this should not happen, but we should avoid crashing */
1210 exc = mono_get_exception_execution_engine ("Invalid internal state, resuming abort after handler block but no resume ip found");
1212 exc = mono_thread_resume_interruption ();
1215 mono_handle_exception (&ctx, exc);
1216 mono_restore_context (&ctx);
1223 mono_create_handler_block_trampoline (void)
1225 static gpointer code;
1227 mono_memory_barrier ();
1231 g_assert (!mono_aot_only);
1233 mono_trampolines_lock ();
1236 MonoTrampInfo *info;
1239 tmp = mono_arch_create_handler_block_trampoline (&info, FALSE);
1240 mono_tramp_info_register (info);
1241 mono_memory_barrier ();
1244 mono_trampolines_unlock ();
1251 * mono_get_trampoline_func:
1253 * Return the C function which needs to be called by the generic trampoline of type
1257 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1259 switch (tramp_type) {
1260 case MONO_TRAMPOLINE_JIT:
1261 case MONO_TRAMPOLINE_JUMP:
1262 return mono_magic_trampoline;
1263 case MONO_TRAMPOLINE_CLASS_INIT:
1264 return mono_class_init_trampoline;
1265 case MONO_TRAMPOLINE_GENERIC_CLASS_INIT:
1266 return mono_generic_class_init_trampoline;
1267 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1268 return mono_rgctx_lazy_fetch_trampoline;
1269 #ifdef MONO_ARCH_AOT_SUPPORTED
1270 case MONO_TRAMPOLINE_AOT:
1271 return mono_aot_trampoline;
1272 case MONO_TRAMPOLINE_AOT_PLT:
1273 return mono_aot_plt_trampoline;
1275 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1276 case MONO_TRAMPOLINE_DELEGATE:
1277 return mono_delegate_trampoline;
1279 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1280 return mono_altstack_restore_prot;
1281 #ifndef DISABLE_REMOTING
1282 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1283 return mono_generic_virtual_remoting_trampoline;
1285 case MONO_TRAMPOLINE_MONITOR_ENTER:
1286 return mono_monitor_enter_trampoline;
1287 case MONO_TRAMPOLINE_MONITOR_ENTER_V4:
1288 return mono_monitor_enter_v4_trampoline;
1289 case MONO_TRAMPOLINE_MONITOR_EXIT:
1290 return mono_monitor_exit_trampoline;
1291 case MONO_TRAMPOLINE_VCALL:
1292 return mono_vcall_trampoline;
1293 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1294 case MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD:
1295 return mono_handler_block_guard_trampoline;
1298 g_assert_not_reached ();
1304 create_trampoline_code (MonoTrampolineType tramp_type)
1306 MonoTrampInfo *info;
1309 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1310 mono_tramp_info_register (info);
1316 mono_trampolines_init (void)
1318 mono_mutex_init_recursive (&trampolines_mutex);
1323 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1324 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1325 mono_trampoline_code [MONO_TRAMPOLINE_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_CLASS_INIT);
1326 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_CLASS_INIT);
1327 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1328 #ifdef MONO_ARCH_AOT_SUPPORTED
1329 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1330 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1332 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1333 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1335 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1336 #ifndef DISABLE_REMOTING
1337 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1339 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_ENTER] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_ENTER);
1340 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_ENTER_V4] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_ENTER_V4);
1341 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_EXIT] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_EXIT);
1342 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1343 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1344 mono_trampoline_code [MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD] = create_trampoline_code (MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD);
1345 mono_create_handler_block_trampoline ();
1348 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1349 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1350 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1351 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1355 mono_trampolines_cleanup (void)
1357 if (class_init_hash_addr)
1358 g_hash_table_destroy (class_init_hash_addr);
1359 if (rgctx_lazy_fetch_trampoline_hash)
1360 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1361 if (rgctx_lazy_fetch_trampoline_hash_addr)
1362 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1364 mono_mutex_destroy (&trampolines_mutex);
1368 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1370 g_assert (mono_trampoline_code [tramp_type]);
1372 return mono_trampoline_code [tramp_type];
1376 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1379 return mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, code_len);
1381 return mono_arch_create_specific_trampoline (arg1, tramp_type, domain, code_len);
1385 mono_create_class_init_trampoline (MonoVTable *vtable)
1388 MonoDomain *domain = vtable->domain;
1390 g_assert (!vtable->klass->generic_container);
1392 /* previously created trampoline code */
1393 mono_domain_lock (domain);
1395 g_hash_table_lookup (domain_jit_info (domain)->class_init_trampoline_hash,
1397 mono_domain_unlock (domain);
1401 code = mono_create_specific_trampoline (vtable, MONO_TRAMPOLINE_CLASS_INIT, domain, NULL);
1403 ptr = mono_create_ftnptr (domain, code);
1405 /* store trampoline address */
1406 mono_domain_lock (domain);
1407 g_hash_table_insert (domain_jit_info (domain)->class_init_trampoline_hash,
1409 mono_domain_unlock (domain);
1411 mono_trampolines_lock ();
1412 if (!class_init_hash_addr)
1413 class_init_hash_addr = g_hash_table_new (NULL, NULL);
1414 g_hash_table_insert (class_init_hash_addr, ptr, vtable);
1415 mono_trampolines_unlock ();
1421 mono_create_generic_class_init_trampoline (void)
1423 #ifdef MONO_ARCH_VTABLE_REG
1424 static gpointer code;
1425 MonoTrampInfo *info;
1427 mono_trampolines_lock ();
1431 /* get_named_code () might return an ftnptr, but our caller expects a direct pointer */
1432 code = mono_get_addr_from_ftnptr (mono_aot_get_trampoline ("generic_class_init_trampoline"));
1434 code = mono_arch_create_generic_class_init_trampoline (&info, FALSE);
1435 mono_tramp_info_register (info);
1439 mono_trampolines_unlock ();
1443 g_assert_not_reached ();
1448 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper)
1452 guint32 code_size = 0;
1454 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1456 * We cannot recover the correct type of a shared generic
1457 * method from its native code address, so we use the
1458 * trampoline instead.
1459 * For synchronized methods, the trampoline adds the wrapper.
1461 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1464 mono_domain_lock (domain);
1465 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1466 mono_domain_unlock (domain);
1470 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1471 g_assert (code_size);
1473 ji = mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1474 ji->code_start = code;
1475 ji->code_size = code_size;
1476 ji->d.method = method;
1479 * mono_delegate_ctor needs to find the method metadata from the
1480 * trampoline address, so we save it here.
1483 mono_jit_info_table_add (domain, ji);
1485 mono_domain_lock (domain);
1486 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1487 mono_domain_unlock (domain);
1489 return ji->code_start;
1493 mono_create_jit_trampoline_in_domain (MonoDomain *domain, MonoMethod *method)
1497 if (mono_aot_only) {
1498 /* Avoid creating trampolines if possible */
1499 gpointer code = mono_jit_find_compiled_method (domain, method);
1505 mono_domain_lock (domain);
1506 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1507 mono_domain_unlock (domain);
1511 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1513 mono_domain_lock (domain);
1514 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1515 mono_domain_unlock (domain);
1523 mono_create_jit_trampoline (MonoMethod *method)
1525 return mono_create_jit_trampoline_in_domain (mono_domain_get (), method);
1529 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
1533 MonoDomain *domain = mono_domain_get ();
1534 guint8 *buf, *start;
1536 buf = start = mono_domain_alloc0 (domain, 2 * sizeof (gpointer));
1538 *(gpointer*)(gpointer)buf = image;
1539 buf += sizeof (gpointer);
1540 *(guint32*)(gpointer)buf = token;
1542 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
1551 * mono_create_delegate_trampoline_info:
1553 * Create a delegate trampoline for the KLASS+METHOD pair.
1555 MonoDelegateTrampInfo*
1556 mono_create_delegate_trampoline_info (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1558 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1559 MonoDelegateTrampInfo *tramp_info;
1560 MonoClassMethodPair pair, *dpair;
1561 guint32 code_size = 0;
1564 pair.method = method;
1565 mono_domain_lock (domain);
1566 tramp_info = g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, &pair);
1567 mono_domain_unlock (domain);
1571 tramp_info = create_delegate_trampoline_data (domain, klass, method);
1573 tramp_info->invoke_impl = mono_create_specific_trampoline (tramp_info, MONO_TRAMPOLINE_DELEGATE, domain, &code_size);
1574 g_assert (code_size);
1576 dpair = mono_domain_alloc0 (domain, sizeof (MonoClassMethodPair));
1577 memcpy (dpair, &pair, sizeof (MonoClassMethodPair));
1579 /* store trampoline address */
1580 mono_domain_lock (domain);
1581 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash, dpair, tramp_info);
1582 mono_domain_unlock (domain);
1591 mono_create_delegate_trampoline (MonoDomain *domain, MonoClass *klass)
1593 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1594 return mono_create_delegate_trampoline_info (domain, klass, NULL)->invoke_impl;
1601 mono_create_delegate_virtual_trampoline (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1603 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1604 MonoMethod *invoke = mono_get_delegate_invoke (klass);
1607 return mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), method);
1614 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1616 static gboolean inited = FALSE;
1617 static int num_trampolines = 0;
1618 MonoTrampInfo *info;
1620 gpointer tramp, ptr;
1622 mono_trampolines_lock ();
1623 if (rgctx_lazy_fetch_trampoline_hash)
1624 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1627 mono_trampolines_unlock ();
1631 if (mono_aot_only) {
1632 ptr = mono_aot_get_lazy_fetch_trampoline (offset);
1634 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1635 mono_tramp_info_register (info);
1636 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1639 mono_trampolines_lock ();
1640 if (!rgctx_lazy_fetch_trampoline_hash) {
1641 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1642 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1644 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1645 g_assert (offset != -1);
1646 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1647 mono_trampolines_unlock ();
1650 mono_counters_register ("RGCTX num lazy fetch trampolines",
1651 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1660 mono_create_monitor_enter_trampoline (void)
1662 static gpointer code;
1664 if (mono_aot_only) {
1666 code = mono_aot_get_trampoline ("monitor_enter_trampoline");
1670 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1671 mono_trampolines_lock ();
1674 MonoTrampInfo *info;
1676 code = mono_arch_create_monitor_enter_trampoline (&info, FALSE, FALSE);
1677 mono_tramp_info_register (info);
1680 mono_trampolines_unlock ();
1683 g_assert_not_reached ();
1690 mono_create_monitor_enter_v4_trampoline (void)
1692 static gpointer code;
1694 if (mono_aot_only) {
1696 code = mono_aot_get_trampoline ("monitor_enter_v4_trampoline");
1700 #if defined(MONO_ARCH_MONITOR_OBJECT_REG) && defined(MONO_ARCH_MONITOR_LOCK_TAKEN_REG)
1701 mono_trampolines_lock ();
1704 MonoTrampInfo *info;
1706 code = mono_arch_create_monitor_enter_trampoline (&info, TRUE, FALSE);
1707 mono_tramp_info_register (info);
1710 mono_trampolines_unlock ();
1713 g_assert_not_reached ();
1720 mono_create_monitor_exit_trampoline (void)
1722 static gpointer code;
1724 if (mono_aot_only) {
1726 code = mono_aot_get_trampoline ("monitor_exit_trampoline");
1730 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1731 mono_trampolines_lock ();
1734 MonoTrampInfo *info;
1736 code = mono_arch_create_monitor_exit_trampoline (&info, FALSE);
1737 mono_tramp_info_register (info);
1740 mono_trampolines_unlock ();
1743 g_assert_not_reached ();
1748 #ifdef MONO_ARCH_LLVM_SUPPORTED
1750 * mono_create_llvm_imt_trampoline:
1752 * LLVM compiled code can't pass in the IMT argument, so we use this trampoline, which
1753 * sets the IMT argument, then branches to the contents of the vtable slot given by
1754 * vt_offset in the vtable which is obtained from the argument list.
1757 mono_create_llvm_imt_trampoline (MonoDomain *domain, MonoMethod *m, int vt_offset)
1759 #ifdef MONO_ARCH_HAVE_LLVM_IMT_TRAMPOLINE
1760 return mono_arch_get_llvm_imt_trampoline (domain, m, vt_offset);
1762 g_assert_not_reached ();
1769 mono_find_class_init_trampoline_by_addr (gconstpointer addr)
1773 mono_trampolines_lock ();
1774 if (class_init_hash_addr)
1775 res = g_hash_table_lookup (class_init_hash_addr, addr);
1778 mono_trampolines_unlock ();
1783 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1787 mono_trampolines_lock ();
1788 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1789 /* We store the real offset + 1 so we can detect when the lookup fails */
1790 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1798 mono_trampolines_unlock ();
1802 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1806 "generic_class_init",
1811 "restore_stack_prot",
1812 "generic_virtual_remoting",
1817 "handler_block_guard"
1821 * mono_get_generic_trampoline_simple_name:
1825 mono_get_generic_trampoline_simple_name (MonoTrampolineType tramp_type)
1827 return tramp_names [tramp_type];
1831 * mono_get_generic_trampoline_name:
1833 * Returns a pointer to malloc-ed memory.
1836 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1838 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1842 * mono_get_rgctx_fetch_trampoline_name:
1844 * Returns a pointer to malloc-ed memory.
1847 mono_get_rgctx_fetch_trampoline_name (int slot)
1852 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1853 index = MONO_RGCTX_SLOT_INDEX (slot);
1855 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);
1859 mini_get_nullified_class_init_trampoline (void)
1861 static gpointer nullified_class_init_trampoline;
1863 if (!nullified_class_init_trampoline) {
1865 MonoTrampInfo *info;
1867 if (mono_aot_only) {
1868 tramp = mono_aot_get_trampoline ("nullified_class_init_trampoline");
1870 tramp = mono_arch_get_nullified_class_init_trampoline (&info);
1871 mono_tramp_info_register (info);
1873 mono_memory_barrier ();
1874 nullified_class_init_trampoline = tramp;
1877 return nullified_class_init_trampoline;
1881 * mini_get_single_step_trampoline:
1883 * Return a trampoline which calls debugger_agent_single_step_from_context ().
1886 mini_get_single_step_trampoline (void)
1888 static gpointer trampoline;
1893 if (mono_aot_only) {
1894 tramp = mono_aot_get_trampoline ("sdb_single_step_trampoline");
1896 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1897 MonoTrampInfo *info;
1898 tramp = mono_arch_create_sdb_trampoline (TRUE, &info, FALSE);
1899 mono_tramp_info_register (info);
1902 g_assert_not_reached ();
1905 mono_memory_barrier ();
1913 * mini_get_breakpoint_trampoline:
1915 * Return a trampoline which calls debugger_agent_breakpoint_from_context ().
1918 mini_get_breakpoint_trampoline (void)
1920 static gpointer trampoline;
1925 if (mono_aot_only) {
1926 tramp = mono_aot_get_trampoline ("sdb_breakpoint_trampoline");
1928 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1929 MonoTrampInfo *info;
1930 tramp = mono_arch_create_sdb_trampoline (FALSE, &info, FALSE);
1931 mono_tramp_info_register (info);
1934 g_assert_not_reached ();
1937 mono_memory_barrier ();