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>
18 #include "debug-mini.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 = NULL;
27 static GHashTable *rgctx_lazy_fetch_trampoline_hash = NULL;
28 static GHashTable *rgctx_lazy_fetch_trampoline_hash_addr = NULL;
29 static guint32 trampoline_calls, jit_trampolines, unbox_trampolines, static_rgctx_trampolines;
31 #define mono_trampolines_lock() EnterCriticalSection (&trampolines_mutex)
32 #define mono_trampolines_unlock() LeaveCriticalSection (&trampolines_mutex)
33 static CRITICAL_SECTION 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:
65 * Return a static rgctx trampoline for M which branches to ADDR which should
66 * point to the compiled code of M.
68 * Static rgctx trampolines are used when a shared generic method which doesn't
69 * have a this argument is called indirectly, ie. from code which can't pass in
70 * the rgctx argument. The trampoline sets the rgctx argument and jumps to the
71 * methods code. These trampolines are similar to the unbox trampolines, they
72 * perform the same task as the static rgctx wrappers, but they are smaller/faster,
73 * and can be made to work with full AOT.
74 * On PPC addr should be an ftnptr and the return value is an ftnptr too.
77 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
82 RgctxTrampInfo tmp_info;
85 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
86 g_assert (((gpointer*)addr) [2] == 0);
89 ctx = mini_method_get_rgctx (m);
91 domain = mono_domain_get ();
94 * In the AOT case, addr might point to either the method, or to an unbox trampoline,
95 * so make the hash keyed on the m+addr pair.
97 mono_domain_lock (domain);
98 if (!domain_jit_info (domain)->static_rgctx_trampoline_hash)
99 domain_jit_info (domain)->static_rgctx_trampoline_hash = g_hash_table_new (rgctx_tramp_info_hash, rgctx_tramp_info_equal);
101 tmp_info.addr = addr;
102 res = g_hash_table_lookup (domain_jit_info (domain)->static_rgctx_trampoline_hash,
104 mono_domain_unlock (domain);
109 res = mono_aot_get_static_rgctx_trampoline (ctx, addr);
111 res = mono_arch_get_static_rgctx_trampoline (m, ctx, addr);
113 mono_domain_lock (domain);
114 /* Duplicates inserted while we didn't hold the lock are OK */
115 info = mono_domain_alloc (domain, sizeof (RgctxTrampInfo));
118 g_hash_table_insert (domain_jit_info (domain)->static_rgctx_trampoline_hash, info, res);
119 mono_domain_unlock (domain);
121 static_rgctx_trampolines ++;
127 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
130 * This shouldn't happen as all arches which support generic sharing support
131 * static rgctx trampolines as well.
133 g_assert_not_reached ();
137 #ifdef MONO_ARCH_HAVE_IMT
140 * Either IMPL_METHOD or AOT_ADDR will be set on return.
145 * This works against problems when compiling with gcc 4.6 on arm. The 'then' part of
146 * this line gets executed, even when the condition is false:
147 * if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
148 * *need_rgctx_tramp = TRUE;
150 __attribute__ ((noinline))
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) {
179 MonoGenericContext context = { NULL, NULL };
182 * Generic virtual method, imt_method contains the inflated interface
183 * method, need to get the inflated impl method.
185 /* imt_method->slot might not be set */
186 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_declaring_generic_method (imt_method)->slot);
188 if (impl->klass->generic_class)
189 context.class_inst = impl->klass->generic_class->context.class_inst;
190 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
191 impl = mono_class_inflate_generic_method (impl, &context);
193 /* Avoid loading metadata or creating a generic vtable if possible */
194 if (lookup_aot && !vt->klass->valuetype)
195 *aot_addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, interface_offset + mono_method_get_vtable_slot (imt_method));
201 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_vtable_slot (imt_method));
204 if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
205 *need_rgctx_tramp = TRUE;
206 if (impl && impl->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
207 WrapperInfo *info = mono_marshal_get_wrapper_info (impl);
209 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
210 // FIXME: This needs a gsharedvt-out trampoline, since the caller uses the gsharedvt calling conv, but the
211 // wrapper is a normal non-generic method.
212 *need_rgctx_tramp = TRUE;
213 //g_assert_not_reached ();
219 printf ("mono_convert_imt_slot_to_vtable_slot: method = %s.%s.%s, imt_method = %s.%s.%s\n",
220 method->klass->name_space, method->klass->name, method->name,
221 imt_method->klass->name_space, imt_method->klass->name, imt_method->name);
224 g_assert (imt_slot < MONO_IMT_SIZE);
225 if (vt->imt_collisions_bitmap & (1 << imt_slot)) {
226 int slot = mono_method_get_vtable_index (imt_method);
228 gpointer *vtable_slot;
230 g_assert (slot != -1);
231 vtable_offset = interface_offset + slot;
232 vtable_slot = & (vt->vtable [vtable_offset]);
234 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);
239 printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, but not colliding\n", slot, imt_slot);
248 * This is a super-ugly hack to fix bug #616463.
250 * The problem is that we don't always set is_generic for generic
251 * method definitions. See the comment at the end of
252 * mono_class_inflate_generic_method_full_checked() in class.c.
255 is_generic_method_definition (MonoMethod *m)
257 MonoGenericContext *context;
263 context = mono_method_get_context (m);
264 if (!context->method_inst)
266 if (context->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)m)->declaring)->context.method_inst)
272 mini_jit_info_is_gsharedvt (MonoJitInfo *ji)
274 if (ji && ji->has_generic_jit_info && (mono_jit_info_get_generic_sharing_context (ji)->var_is_vt ||
275 mono_jit_info_get_generic_sharing_context (ji)->mvar_is_vt))
282 * mini_add_method_trampoline:
284 * Add static rgctx/gsharedvt_in/unbox trampolines to M/COMPILED_METHOD if needed. Return the trampoline address, or
285 * COMPILED_METHOD if no trampoline is needed.
286 * ORIG_METHOD is the method the caller originally called i.e. an iface method, or NULL.
289 mini_add_method_trampoline (MonoMethod *orig_method, MonoMethod *m, gpointer compiled_method, gboolean add_static_rgctx_tramp, gboolean add_unbox_tramp)
291 gpointer addr = compiled_method;
292 gboolean callee_gsharedvt, callee_array_helper;
293 MonoMethod *jmethod = NULL;
295 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
297 // FIXME: This loads information from AOT
298 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
300 callee_array_helper = FALSE;
301 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
302 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
305 * generic array helpers.
306 * Have to replace the wrappers with the original generic instances.
308 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
309 callee_array_helper = TRUE;
310 m = info->d.generic_array_helper.method;
312 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
313 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
315 /* Same for synchronized inner wrappers */
316 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
317 m = info->d.synchronized_inner.method;
324 if (callee_gsharedvt)
325 g_assert (m->is_inflated);
327 addr = compiled_method;
329 if (add_unbox_tramp) {
331 * The unbox trampolines call the method directly, so need to add
332 * an rgctx tramp before them.
335 addr = mono_aot_get_unbox_trampoline (m);
337 unbox_trampolines ++;
338 addr = mono_arch_get_unbox_trampoline (m, addr);
343 jmethod = jinfo_get_method (ji);
344 if (callee_gsharedvt && mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod))) {
345 MonoGenericSharingContext *gsctx;
346 MonoMethodSignature *sig, *gsig;
348 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
350 /* Call from normal/gshared code to gsharedvt code with variable signature */
351 gsctx = mono_jit_info_get_generic_sharing_context (ji);
353 sig = mono_method_signature (m);
354 gsig = mono_method_signature (jmethod);
356 addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, gsctx, -1, FALSE);
358 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
361 if (add_static_rgctx_tramp && !callee_array_helper)
362 addr = mono_create_static_rgctx_trampoline (m, addr);
368 * common_call_trampoline:
370 * The code to handle normal, virtual, and interface method calls and jumps, both
371 * from JITted and LLVM compiled code.
374 common_call_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8* tramp, MonoVTable *vt, gpointer *vtable_slot, gboolean need_rgctx_tramp)
376 gpointer addr, compiled_method;
377 gboolean generic_shared = FALSE;
378 gboolean need_unbox_tramp = FALSE;
379 MonoMethod *declaring = NULL;
380 MonoMethod *generic_virtual = NULL, *variant_iface = NULL, *orig_method = NULL;
382 gboolean virtual, variance_used = FALSE;
383 gpointer *orig_vtable_slot, *vtable_slot_to_patch = NULL;
384 MonoJitInfo *ji = NULL;
386 virtual = (gpointer)vtable_slot > (gpointer)vt;
388 orig_vtable_slot = vtable_slot;
389 vtable_slot_to_patch = vtable_slot;
391 #ifdef MONO_ARCH_HAVE_IMT
393 if (vt && (gpointer)vtable_slot < (gpointer)vt) {
394 MonoMethod *impl_method = NULL;
395 MonoObject *this_arg;
397 /* we get the interface method because mono_convert_imt_slot_to_vtable_slot ()
398 * needs the signature to be able to find the this argument
400 m = mono_arch_find_imt_method (regs, code);
401 vtable_slot = orig_vtable_slot;
402 g_assert (vtable_slot);
406 this_arg = mono_arch_get_this_arg_from_call (regs, code);
408 if (mono_object_is_transparent_proxy (this_arg)) {
409 /* Use the slow path for now */
410 m = mono_object_get_virtual_method (this_arg, m);
411 vtable_slot_to_patch = NULL;
415 if (m->is_inflated && ((MonoMethodInflated*)m)->context.method_inst) {
416 /* Generic virtual method */
418 need_rgctx_tramp = TRUE;
419 } else if (variance_used && mono_class_has_variant_generic_params (m->klass)) {
424 /* We can only use the AOT compiled code if we don't require further processing */
425 lookup_aot = !generic_virtual & !variant_iface;
426 vtable_slot = mono_convert_imt_slot_to_vtable_slot (vtable_slot, regs, code, m, lookup_aot, &impl_method, &need_rgctx_tramp, &variance_used, &addr);
427 /* This is the vcall slot which gets called through the IMT thunk */
428 vtable_slot_to_patch = vtable_slot;
429 /* mono_convert_imt_slot_to_vtable_slot () also gives us the method that is supposed
430 * to be called, so we compile it and go ahead as usual.
432 /*g_print ("imt found method %p (%s) at %p\n", impl_method, impl_method->name, code);*/
436 * We found AOT compiled code for the method, skip the rest.
438 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
441 return mono_create_ftnptr (mono_domain_get (), addr);
450 * The virtual check is needed because is_generic_method_definition (m) could
451 * return TRUE for methods used in IMT calls too.
453 if (virtual && is_generic_method_definition (m)) {
454 MonoGenericContext context = { NULL, NULL };
455 MonoMethod *declaring;
458 declaring = mono_method_get_declaring_generic_method (m);
462 if (m->klass->generic_class)
463 context.class_inst = m->klass->generic_class->context.class_inst;
465 g_assert (!m->klass->generic_container);
467 #ifdef MONO_ARCH_HAVE_IMT
468 generic_virtual = mono_arch_find_imt_method (regs, code);
470 if (generic_virtual) {
471 g_assert (generic_virtual->is_inflated);
472 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
475 m = mono_class_inflate_generic_method (declaring, &context);
476 /* FIXME: only do this if the method is sharable */
477 need_rgctx_tramp = TRUE;
478 } else if ((context_used = mono_method_check_context_used (m))) {
479 MonoClass *klass = NULL;
480 MonoMethod *actual_method = NULL;
481 MonoVTable *vt = NULL;
482 MonoGenericInst *method_inst = NULL;
485 generic_shared = TRUE;
489 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
490 #ifdef MONO_ARCH_RGCTX_REG
491 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
493 klass = mrgctx->class_vtable->klass;
494 method_inst = mrgctx->method_inst;
496 g_assert_not_reached ();
498 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
499 #ifdef MONO_ARCH_RGCTX_REG
500 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
502 klass = vtable->klass;
504 g_assert_not_reached ();
507 #ifdef MONO_ARCH_HAVE_IMT
508 MonoObject *this_argument = mono_arch_get_this_arg_from_call (regs, code);
510 vt = this_argument->vtable;
511 vtable_slot = orig_vtable_slot;
513 g_assert (this_argument->vtable->klass->inited);
514 //mono_class_init (this_argument->vtable->klass);
517 mono_class_setup_supertypes (this_argument->vtable->klass);
518 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
525 g_assert (vtable_slot || klass);
528 int displacement = vtable_slot - ((gpointer*)vt);
530 g_assert_not_reached ();
532 g_assert (displacement > 0);
534 actual_method = vt->klass->vtable [displacement];
537 if (method_inst || m->wrapper_type) {
538 MonoGenericContext context = { NULL, NULL };
541 declaring = mono_method_get_declaring_generic_method (m);
545 if (klass->generic_class)
546 context.class_inst = klass->generic_class->context.class_inst;
547 else if (klass->generic_container)
548 context.class_inst = klass->generic_container->context.class_inst;
549 context.method_inst = method_inst;
551 actual_method = mono_class_inflate_generic_method (declaring, &context);
553 actual_method = mono_class_get_method_generic (klass, m);
557 g_assert (actual_method);
558 g_assert (actual_method->klass == klass);
560 if (actual_method->is_inflated)
561 declaring = mono_method_get_declaring_generic_method (actual_method);
568 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
569 m = mono_marshal_get_synchronized_wrapper (m);
570 need_rgctx_tramp = FALSE;
573 /* Calls made through delegates on platforms without delegate trampolines */
574 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
575 need_rgctx_tramp = TRUE;
577 addr = compiled_method = mono_compile_method (m);
580 mono_debugger_trampoline_compiled (code, m, addr);
582 if (generic_virtual || variant_iface) {
583 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
584 need_unbox_tramp = TRUE;
585 } else if (orig_vtable_slot) {
586 if (m->klass->valuetype)
587 need_unbox_tramp = TRUE;
590 addr = mini_add_method_trampoline (orig_method, m, compiled_method, need_rgctx_tramp, need_unbox_tramp);
592 if (generic_virtual || variant_iface) {
593 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
595 vtable_slot = orig_vtable_slot;
596 g_assert (vtable_slot);
598 mono_method_add_generic_virtual_invocation (mono_domain_get (),
605 /* the method was jumped to */
607 MonoDomain *domain = mono_domain_get ();
609 /* Patch the got entries pointing to this method */
611 * We do this here instead of in mono_codegen () to cover the case when m
612 * was loaded from an aot image.
614 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
617 mono_domain_lock (domain);
618 list = g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
620 for (tmp = list; tmp; tmp = tmp->next) {
621 gpointer *got_slot = tmp->data;
624 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
627 mono_domain_unlock (domain);
633 vtable_slot = orig_vtable_slot;
636 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))) {
637 g_assert (*vtable_slot_to_patch);
638 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
642 guint8 *plt_entry = mono_aot_get_plt_entry (code);
643 gboolean no_patch = FALSE;
644 MonoJitInfo *target_ji;
647 if (generic_shared) {
649 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
651 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
653 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
658 mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
660 if (generic_shared) {
661 if (m->wrapper_type != MONO_WRAPPER_NONE)
662 m = mono_marshal_method_from_wrapper (m);
663 //g_assert (mono_method_is_generic_sharable (m, FALSE));
666 /* Patch calling code */
668 mini_jit_info_table_find (mono_domain_get (), mono_get_addr_from_ftnptr (compiled_method), NULL);
670 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
672 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
674 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
675 * generic sharing fails.
676 * FIXME: Performance problem.
681 if (!no_patch && mono_method_same_domain (ji, target_ji))
682 mono_arch_patch_callsite (ji->code_start, code, addr);
690 * mono_magic_trampoline:
692 * This trampoline handles normal calls from JITted code.
695 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
699 return common_call_trampoline (regs, code, arg, tramp, NULL, NULL, FALSE);
703 * mono_vcall_trampoline:
705 * This trampoline handles virtual calls.
708 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
712 gpointer *vtable_slot;
714 gboolean need_rgctx_tramp = FALSE;
720 * We need to obtain the following pieces of information:
721 * - the method which needs to be compiled.
723 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
724 * the other two can be computed from the vtable + the slot index.
726 #ifndef MONO_ARCH_THIS_AS_FIRST_ARG
727 /* All architectures should support this */
728 g_assert_not_reached ();
732 * Obtain the vtable from the 'this' arg.
734 this = mono_arch_get_this_arg_from_call (regs, code);
740 /* Normal virtual call */
741 vtable_slot = &(vt->vtable [slot]);
743 /* Avoid loading metadata or creating a generic vtable if possible */
744 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot);
745 if (addr && !vt->klass->valuetype) {
746 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
749 return mono_create_ftnptr (mono_domain_get (), addr);
754 * is_generic_method_definition() above) also
755 * goes away if we do a
756 * mono_class_setup_vtable (vt->klass) here,
757 * because we then inflate the method
758 * correctly, put it in the cache, and the
759 * "wrong" inflation invocation still looks up
760 * the correctly inflated method.
762 * The hack above seems more stable and
765 m = mono_class_get_vtable_entry (vt->klass, slot);
767 need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (m, 0);
770 vtable_slot = &(((gpointer*)vt) [slot]);
773 need_rgctx_tramp = FALSE;
776 return common_call_trampoline (regs, code, m, tramp, vt, vtable_slot, need_rgctx_tramp);
779 #ifndef DISABLE_REMOTING
781 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
783 MonoGenericContext context = { NULL, NULL };
784 MonoMethod *imt_method, *declaring;
789 g_assert (m->is_generic);
792 declaring = mono_method_get_declaring_generic_method (m);
796 if (m->klass->generic_class)
797 context.class_inst = m->klass->generic_class->context.class_inst;
799 g_assert (!m->klass->generic_container);
801 #ifdef MONO_ARCH_HAVE_IMT
802 imt_method = mono_arch_find_imt_method (regs, code);
803 if (imt_method->is_inflated)
804 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
806 m = mono_class_inflate_generic_method (declaring, &context);
807 m = mono_marshal_get_remoting_invoke_with_check (m);
809 addr = mono_compile_method (m);
812 mono_debugger_trampoline_compiled (NULL, m, addr);
819 * mono_aot_trampoline:
821 * This trampoline handles calls made from AOT code. We try to bypass the
822 * normal JIT compilation logic to avoid loading the metadata for the method.
824 #ifdef MONO_ARCH_AOT_SUPPORTED
826 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
831 MonoMethod *method = NULL;
837 image = *(gpointer*)(gpointer)token_info;
838 token_info += sizeof (gpointer);
839 token = *(guint32*)(gpointer)token_info;
841 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token);
843 method = mono_get_method (image, token, NULL);
846 /* Use the generic code */
847 return mono_magic_trampoline (regs, code, method, tramp);
850 addr = mono_create_ftnptr (mono_domain_get (), addr);
852 /* This is a normal call through a PLT entry */
853 plt_entry = mono_aot_get_plt_entry (code);
854 g_assert (plt_entry);
856 mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
862 * mono_aot_plt_trampoline:
864 * This trampoline handles calls made from AOT code through the PLT table.
867 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
870 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
875 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code);
877 if (mono_loader_get_last_error ())
878 mono_raise_exception (mono_loader_error_prepare_exception (mono_loader_get_last_error ()));
879 // FIXME: Error handling (how ?)
888 * mono_class_init_trampoline:
890 * This method calls mono_runtime_class_init () to run the static constructor
891 * for the type, then patches the caller code so it is not called again.
894 mono_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
896 guint8 *plt_entry = mono_aot_get_plt_entry (code);
900 mono_runtime_class_init (vtable);
903 mono_arch_nullify_plt_entry (plt_entry, regs);
905 mono_arch_nullify_class_init_trampoline (code, regs);
910 * mono_generic_class_init_trampoline:
912 * This method calls mono_runtime_class_init () to run the static constructor
916 mono_generic_class_init_trampoline (mgreg_t *regs, guint8 *code, MonoVTable *vtable, guint8 *tramp)
920 mono_runtime_class_init (vtable);
924 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
926 #ifdef MONO_ARCH_VTABLE_REG
927 static gboolean inited = FALSE;
928 static int num_lookups = 0;
929 guint32 slot = GPOINTER_TO_UINT (data);
930 mgreg_t *r = (mgreg_t*)regs;
931 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
932 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
933 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
938 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
945 return mono_method_fill_runtime_generic_context (arg, code, index);
947 return mono_class_fill_runtime_generic_context (arg, code, index);
949 g_assert_not_reached ();
954 mono_monitor_enter_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
956 mono_monitor_enter (obj);
960 mono_monitor_exit_trampoline (mgreg_t *regs, guint8 *code, MonoObject *obj, guint8 *tramp)
962 mono_monitor_exit (obj);
965 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
968 * mono_delegate_trampoline:
970 * This trampoline handles calls made to Delegate:Invoke ().
971 * This is called once the first time a delegate is invoked, so it must be fast.
974 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
976 MonoDomain *domain = mono_domain_get ();
977 MonoDelegate *delegate;
980 MonoMethod *method = NULL;
981 gboolean multicast, callvirt = FALSE;
982 gboolean need_rgctx_tramp = FALSE;
983 gboolean need_unbox_tramp = FALSE;
984 gboolean enable_caching = TRUE;
985 MonoMethod *invoke = tramp_data [0];
986 guint8 *impl_this = tramp_data [1];
987 guint8 *impl_nothis = tramp_data [2];
989 MonoMethodSignature *sig;
990 gpointer addr, compiled_method;
994 /* Obtain the delegate object according to the calling convention */
995 delegate = mono_arch_get_this_arg_from_call (regs, code);
997 if (delegate->method) {
998 method = delegate->method;
1001 * delegate->method_ptr == NULL means the delegate was initialized by
1002 * mini_delegate_ctor, while != NULL means it is initialized by
1003 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
1004 * (ctor_with_method () does this, but it doesn't store the wrapper back into
1005 * delegate->method).
1007 #ifndef DISABLE_REMOTING
1008 if (delegate->target && delegate->target->vtable->klass == mono_defaults.transparent_proxy_class) {
1010 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_class_get_com_object_class () &&
1011 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1013 method = mono_marshal_get_remoting_invoke (method);
1017 mono_error_init (&err);
1018 sig = mono_method_signature_checked (method, &err);
1020 mono_error_raise_exception (&err);
1022 if (sig->hasthis && method->klass->valuetype) {
1024 need_unbox_tramp = TRUE;
1026 method = mono_marshal_get_unbox_wrapper (method);
1030 ji = mono_jit_info_table_find (domain, mono_get_addr_from_ftnptr (delegate->method_ptr));
1032 method = jinfo_get_method (ji);
1036 mono_error_init (&err);
1037 sig = mono_method_signature_checked (method, &err);
1039 mono_error_raise_exception (&err);
1041 callvirt = !delegate->target && sig->hasthis;
1042 if (delegate->target &&
1043 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1044 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1045 method->klass->flags & TYPE_ATTRIBUTE_ABSTRACT) {
1046 method = mono_object_get_virtual_method (delegate->target, method);
1047 enable_caching = FALSE;
1051 if (method && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1052 method = mono_marshal_get_synchronized_wrapper (method);
1054 if (method && mono_method_needs_static_rgctx_invoke (method, FALSE))
1055 need_rgctx_tramp = TRUE;
1058 * If the called address is a trampoline, replace it with the compiled method so
1059 * further calls don't have to go through the trampoline.
1061 if (method && !callvirt) {
1062 /* Avoid the overhead of looking up an already compiled method if possible */
1063 if (enable_caching && delegate->method_code && *delegate->method_code) {
1064 delegate->method_ptr = *delegate->method_code;
1066 compiled_method = addr = mono_compile_method (method);
1067 addr = mini_add_method_trampoline (NULL, method, compiled_method, need_rgctx_tramp, need_unbox_tramp);
1068 delegate->method_ptr = addr;
1069 if (enable_caching && delegate->method_code)
1070 *delegate->method_code = delegate->method_ptr;
1071 mono_debugger_trampoline_compiled (NULL, method, delegate->method_ptr);
1074 if (need_rgctx_tramp)
1075 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1078 multicast = ((MonoMulticastDelegate*)delegate)->prev != NULL;
1079 if (!multicast && !callvirt) {
1080 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1081 /* Closed static delegate */
1084 code = delegate->target ? impl_this : impl_nothis;
1087 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1092 /* The general, unoptimized case */
1093 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1094 code = mono_compile_method (m);
1095 code = mini_add_method_trampoline (NULL, m, code, mono_method_needs_static_rgctx_invoke (m, FALSE), FALSE);
1096 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1097 mono_debugger_trampoline_compiled (NULL, m, delegate->invoke_impl);
1104 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1106 mono_handler_block_guard_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_data, guint8* tramp)
1110 MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
1111 gpointer resume_ip = jit_tls->handler_block_return_address;
1113 memcpy (&ctx, &jit_tls->handler_block_context, sizeof (MonoContext));
1114 MONO_CONTEXT_SET_IP (&ctx, jit_tls->handler_block_return_address);
1116 jit_tls->handler_block_return_address = NULL;
1117 jit_tls->handler_block = NULL;
1119 if (!resume_ip) /*this should not happen, but we should avoid crashing */
1120 exc = mono_get_exception_execution_engine ("Invalid internal state, resuming abort after handler block but no resume ip found");
1122 exc = mono_thread_resume_interruption ();
1125 static void (*restore_context) (MonoContext *);
1127 if (!restore_context)
1128 restore_context = mono_get_restore_context ();
1130 mono_handle_exception (&ctx, exc);
1131 restore_context (&ctx);
1138 mono_create_handler_block_trampoline (void)
1140 static gpointer code;
1142 mono_memory_barrier ();
1147 if (mono_aot_only) {
1152 mono_trampolines_lock ();
1155 gpointer tmp = mono_arch_create_handler_block_trampoline ();
1156 mono_memory_barrier ();
1159 mono_trampolines_unlock ();
1166 * mono_get_trampoline_func:
1168 * Return the C function which needs to be called by the generic trampoline of type
1172 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1174 switch (tramp_type) {
1175 case MONO_TRAMPOLINE_JIT:
1176 case MONO_TRAMPOLINE_JUMP:
1177 return mono_magic_trampoline;
1178 case MONO_TRAMPOLINE_CLASS_INIT:
1179 return mono_class_init_trampoline;
1180 case MONO_TRAMPOLINE_GENERIC_CLASS_INIT:
1181 return mono_generic_class_init_trampoline;
1182 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1183 return mono_rgctx_lazy_fetch_trampoline;
1184 #ifdef MONO_ARCH_AOT_SUPPORTED
1185 case MONO_TRAMPOLINE_AOT:
1186 return mono_aot_trampoline;
1187 case MONO_TRAMPOLINE_AOT_PLT:
1188 return mono_aot_plt_trampoline;
1190 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1191 case MONO_TRAMPOLINE_DELEGATE:
1192 return mono_delegate_trampoline;
1194 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1195 return mono_altstack_restore_prot;
1196 #ifndef DISABLE_REMOTING
1197 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1198 return mono_generic_virtual_remoting_trampoline;
1200 case MONO_TRAMPOLINE_MONITOR_ENTER:
1201 return mono_monitor_enter_trampoline;
1202 case MONO_TRAMPOLINE_MONITOR_EXIT:
1203 return mono_monitor_exit_trampoline;
1204 case MONO_TRAMPOLINE_VCALL:
1205 return mono_vcall_trampoline;
1206 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1207 case MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD:
1208 return mono_handler_block_guard_trampoline;
1211 g_assert_not_reached ();
1217 create_trampoline_code (MonoTrampolineType tramp_type)
1219 MonoTrampInfo *info;
1222 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1224 mono_save_trampoline_xdebug_info (info);
1225 if (mono_jit_map_is_enabled ())
1226 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1227 mono_tramp_info_free (info);
1234 mono_trampolines_init (void)
1236 InitializeCriticalSection (&trampolines_mutex);
1241 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1242 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1243 mono_trampoline_code [MONO_TRAMPOLINE_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_CLASS_INIT);
1244 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_CLASS_INIT] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_CLASS_INIT);
1245 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1246 #ifdef MONO_ARCH_AOT_SUPPORTED
1247 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1248 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1250 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1251 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1253 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1254 #ifndef DISABLE_REMOTING
1255 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1257 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_ENTER] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_ENTER);
1258 mono_trampoline_code [MONO_TRAMPOLINE_MONITOR_EXIT] = create_trampoline_code (MONO_TRAMPOLINE_MONITOR_EXIT);
1259 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1260 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1261 mono_trampoline_code [MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD] = create_trampoline_code (MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD);
1262 mono_create_handler_block_trampoline ();
1265 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1266 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1267 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1268 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1272 mono_trampolines_cleanup (void)
1274 if (class_init_hash_addr)
1275 g_hash_table_destroy (class_init_hash_addr);
1276 if (rgctx_lazy_fetch_trampoline_hash)
1277 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1278 if (rgctx_lazy_fetch_trampoline_hash_addr)
1279 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1281 DeleteCriticalSection (&trampolines_mutex);
1285 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1287 g_assert (mono_trampoline_code [tramp_type]);
1289 return mono_trampoline_code [tramp_type];
1293 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1296 return mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, code_len);
1298 return mono_arch_create_specific_trampoline (arg1, tramp_type, domain, code_len);
1302 mono_create_class_init_trampoline (MonoVTable *vtable)
1305 MonoDomain *domain = vtable->domain;
1307 g_assert (!vtable->klass->generic_container);
1309 /* previously created trampoline code */
1310 mono_domain_lock (domain);
1312 g_hash_table_lookup (domain_jit_info (domain)->class_init_trampoline_hash,
1314 mono_domain_unlock (domain);
1318 code = mono_create_specific_trampoline (vtable, MONO_TRAMPOLINE_CLASS_INIT, domain, NULL);
1320 ptr = mono_create_ftnptr (domain, code);
1322 /* store trampoline address */
1323 mono_domain_lock (domain);
1324 g_hash_table_insert (domain_jit_info (domain)->class_init_trampoline_hash,
1326 mono_domain_unlock (domain);
1328 mono_trampolines_lock ();
1329 if (!class_init_hash_addr)
1330 class_init_hash_addr = g_hash_table_new (NULL, NULL);
1331 g_hash_table_insert (class_init_hash_addr, ptr, vtable);
1332 mono_trampolines_unlock ();
1338 mono_create_generic_class_init_trampoline (void)
1340 #ifdef MONO_ARCH_VTABLE_REG
1341 static gpointer code;
1342 MonoTrampInfo *info;
1344 mono_trampolines_lock ();
1348 /* get_named_code () might return an ftnptr, but our caller expects a direct pointer */
1349 code = mono_get_addr_from_ftnptr (mono_aot_get_trampoline ("generic_class_init_trampoline"));
1351 code = mono_arch_create_generic_class_init_trampoline (&info, FALSE);
1354 mono_save_trampoline_xdebug_info (info);
1355 if (mono_jit_map_is_enabled ())
1356 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1357 mono_tramp_info_free (info);
1362 mono_trampolines_unlock ();
1366 g_assert_not_reached ();
1371 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper)
1375 guint32 code_size = 0;
1377 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1379 * We cannot recover the correct type of a shared generic
1380 * method from its native code address, so we use the
1381 * trampoline instead.
1382 * For synchronized methods, the trampoline adds the wrapper.
1384 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1387 mono_domain_lock (domain);
1388 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1389 mono_domain_unlock (domain);
1393 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1394 g_assert (code_size);
1396 ji = mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1397 ji->code_start = code;
1398 ji->code_size = code_size;
1399 ji->d.method = method;
1402 * mono_delegate_ctor needs to find the method metadata from the
1403 * trampoline address, so we save it here.
1406 mono_jit_info_table_add (domain, ji);
1408 mono_domain_lock (domain);
1409 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1410 mono_domain_unlock (domain);
1412 return ji->code_start;
1416 mono_create_jit_trampoline_in_domain (MonoDomain *domain, MonoMethod *method)
1420 if (mono_aot_only) {
1421 /* Avoid creating trampolines if possible */
1422 gpointer code = mono_jit_find_compiled_method (domain, method);
1428 mono_domain_lock (domain);
1429 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1430 mono_domain_unlock (domain);
1434 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1436 mono_domain_lock (domain);
1437 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1438 mono_domain_unlock (domain);
1446 mono_create_jit_trampoline (MonoMethod *method)
1448 return mono_create_jit_trampoline_in_domain (mono_domain_get (), method);
1452 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
1456 MonoDomain *domain = mono_domain_get ();
1457 guint8 *buf, *start;
1459 buf = start = mono_domain_alloc0 (domain, 2 * sizeof (gpointer));
1461 *(gpointer*)(gpointer)buf = image;
1462 buf += sizeof (gpointer);
1463 *(guint32*)(gpointer)buf = token;
1465 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
1473 mono_create_delegate_trampoline (MonoDomain *domain, MonoClass *klass)
1475 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
1477 guint32 code_size = 0;
1478 gpointer *tramp_data;
1481 mono_domain_lock (domain);
1482 ptr = g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, klass);
1483 mono_domain_unlock (domain);
1487 // Precompute the delegate invoke impl and pass it to the delegate trampoline
1488 invoke = mono_get_delegate_invoke (klass);
1491 tramp_data = mono_domain_alloc (domain, sizeof (gpointer) * 3);
1492 tramp_data [0] = invoke;
1493 tramp_data [1] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1494 tramp_data [2] = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1496 ptr = mono_create_specific_trampoline (tramp_data, MONO_TRAMPOLINE_DELEGATE, domain, &code_size);
1497 g_assert (code_size);
1499 /* store trampoline address */
1500 mono_domain_lock (domain);
1501 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash,
1503 mono_domain_unlock (domain);
1512 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1514 static gboolean inited = FALSE;
1515 static int num_trampolines = 0;
1516 MonoTrampInfo *info;
1518 gpointer tramp, ptr;
1521 return mono_aot_get_lazy_fetch_trampoline (offset);
1523 mono_trampolines_lock ();
1524 if (rgctx_lazy_fetch_trampoline_hash)
1525 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1528 mono_trampolines_unlock ();
1532 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1534 mono_save_trampoline_xdebug_info (info);
1535 if (mono_jit_map_is_enabled ())
1536 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1537 mono_tramp_info_free (info);
1539 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1541 mono_trampolines_lock ();
1542 if (!rgctx_lazy_fetch_trampoline_hash) {
1543 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1544 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1546 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1547 g_assert (offset != -1);
1548 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1549 mono_trampolines_unlock ();
1552 mono_counters_register ("RGCTX num lazy fetch trampolines",
1553 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1562 mono_create_monitor_enter_trampoline (void)
1564 static gpointer code;
1566 if (mono_aot_only) {
1568 code = mono_aot_get_trampoline ("monitor_enter_trampoline");
1572 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1573 mono_trampolines_lock ();
1576 MonoTrampInfo *info;
1578 code = mono_arch_create_monitor_enter_trampoline (&info, FALSE);
1580 mono_save_trampoline_xdebug_info (info);
1581 if (mono_jit_map_is_enabled ())
1582 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1583 mono_tramp_info_free (info);
1587 mono_trampolines_unlock ();
1590 g_assert_not_reached ();
1597 mono_create_monitor_exit_trampoline (void)
1599 static gpointer code;
1601 if (mono_aot_only) {
1603 code = mono_aot_get_trampoline ("monitor_exit_trampoline");
1607 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
1608 mono_trampolines_lock ();
1611 MonoTrampInfo *info;
1613 code = mono_arch_create_monitor_exit_trampoline (&info, FALSE);
1615 mono_save_trampoline_xdebug_info (info);
1616 if (mono_jit_map_is_enabled ())
1617 mono_emit_jit_tramp (info->code, info->code_size, info->name);
1618 mono_tramp_info_free (info);
1622 mono_trampolines_unlock ();
1625 g_assert_not_reached ();
1630 #ifdef MONO_ARCH_LLVM_SUPPORTED
1632 * mono_create_llvm_imt_trampoline:
1634 * LLVM compiled code can't pass in the IMT argument, so we use this trampoline, which
1635 * sets the IMT argument, then branches to the contents of the vtable slot given by
1636 * vt_offset in the vtable which is obtained from the argument list.
1639 mono_create_llvm_imt_trampoline (MonoDomain *domain, MonoMethod *m, int vt_offset)
1641 #ifdef MONO_ARCH_HAVE_LLVM_IMT_TRAMPOLINE
1642 return mono_arch_get_llvm_imt_trampoline (domain, m, vt_offset);
1644 g_assert_not_reached ();
1651 mono_find_class_init_trampoline_by_addr (gconstpointer addr)
1655 mono_trampolines_lock ();
1656 if (class_init_hash_addr)
1657 res = g_hash_table_lookup (class_init_hash_addr, addr);
1660 mono_trampolines_unlock ();
1665 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1669 mono_trampolines_lock ();
1670 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1671 /* We store the real offset + 1 so we can detect when the lookup fails */
1672 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1680 mono_trampolines_unlock ();
1684 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1688 "generic_class_init",
1693 "restore_stack_prot",
1694 "generic_virtual_remoting",
1698 "handler_block_guard"
1702 * mono_get_generic_trampoline_name:
1704 * Returns a pointer to malloc-ed memory.
1707 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1709 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1713 * mono_get_rgctx_fetch_trampoline_name:
1715 * Returns a pointer to malloc-ed memory.
1718 mono_get_rgctx_fetch_trampoline_name (int slot)
1723 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1724 index = MONO_RGCTX_SLOT_INDEX (slot);
1726 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);