2 * (C) 2003 Ximian, Inc.
3 * (C) 2003-2011 Novell, Inc.
4 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
5 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
10 #include <mono/metadata/appdomain.h>
11 #include <mono/metadata/metadata-internals.h>
12 #include <mono/metadata/marshal.h>
13 #include <mono/metadata/tabledefs.h>
14 #include <mono/utils/mono-counters.h>
15 #include <mono/utils/mono-error-internals.h>
16 #include <mono/utils/mono-membar.h>
17 #include <mono/utils/mono-compiler.h>
22 * Address of the trampoline code. This is used by the debugger to check
23 * whether a method is a trampoline.
25 guint8* mono_trampoline_code [MONO_TRAMPOLINE_NUM];
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_os_mutex_lock (&trampolines_mutex)
32 #define mono_trampolines_unlock() mono_os_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 = (const RgctxTrampInfo *)ka;
46 const RgctxTrampInfo *i2 = (const RgctxTrampInfo *)kb;
48 if (i1->m == i2->m && i1->addr == i2->addr)
55 rgctx_tramp_info_hash (gconstpointer data)
57 const RgctxTrampInfo *info = (const RgctxTrampInfo *)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, (MonoMethodRuntimeGenericContext *)ctx, addr);
118 mono_domain_lock (domain);
119 /* Duplicates inserted while we didn't hold the lock are OK */
120 info = (RgctxTrampInfo *)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 #define DEBUG_IMT(stmt) do { stmt; } while (0)
145 #define DEBUG_IMT(stmt) do { } while (0)
149 * mini_resolve_imt_method:
151 * Resolve the actual method called when making an IMT call through VTABLE_SLOT with IMT_METHOD as the interface method.
153 * Either IMPL_METHOD or OUT_AOT_ADDR will be set on return.
156 mini_resolve_imt_method (MonoVTable *vt, gpointer *vtable_slot, MonoMethod *imt_method, MonoMethod **impl_method, gpointer *out_aot_addr, gboolean *out_need_rgctx_tramp, MonoMethod **variant_iface)
158 MonoMethod *impl = NULL, *generic_virtual = NULL;
159 gboolean lookup_aot, variance_used = FALSE, need_rgctx_tramp = FALSE;
161 guint8 *aot_addr = NULL;
162 int displacement = vtable_slot - ((gpointer*)vt);
163 int interface_offset;
164 int imt_slot = MONO_IMT_SIZE + displacement;
166 g_assert (imt_slot < MONO_IMT_SIZE);
168 /* This has to be variance aware since imt_method can be from an interface that vt->klass doesn't directly implement */
169 interface_offset = mono_class_interface_offset_with_variance (vt->klass, imt_method->klass, &variance_used);
170 if (interface_offset < 0)
171 g_error ("%s doesn't implement interface %s\n", mono_type_get_name_full (&vt->klass->byval_arg, MONO_TYPE_NAME_FORMAT_IL), mono_type_get_name_full (&imt_method->klass->byval_arg, MONO_TYPE_NAME_FORMAT_IL));
173 *variant_iface = NULL;
174 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
175 /* Generic virtual method */
176 generic_virtual = imt_method;
177 need_rgctx_tramp = TRUE;
178 } else if (variance_used && mono_class_has_variant_generic_params (imt_method->klass)) {
179 *variant_iface = imt_method;
183 /* We can only use the AOT compiled code if we don't require further processing */
184 lookup_aot = !generic_virtual & !variant_iface;
187 mono_vtable_build_imt_slot (vt, mono_method_get_imt_slot (imt_method));
189 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
191 MonoGenericContext context = { NULL, NULL };
194 * Generic virtual method, imt_method contains the inflated interface
195 * method, need to get the inflated impl method.
197 /* imt_method->slot might not be set */
198 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_declaring_generic_method (imt_method)->slot);
200 if (impl->klass->generic_class)
201 context.class_inst = impl->klass->generic_class->context.class_inst;
202 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
203 impl = mono_class_inflate_generic_method_checked (impl, &context, &error);
204 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
206 /* Avoid loading metadata or creating a generic vtable if possible */
207 if (lookup_aot && !vt->klass->valuetype)
208 aot_addr = (guint8 *)mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, interface_offset + mono_method_get_vtable_slot (imt_method));
214 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_vtable_slot (imt_method));
217 if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
218 need_rgctx_tramp = TRUE;
219 if (impl && impl->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
220 WrapperInfo *info = mono_marshal_get_wrapper_info (impl);
222 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER)
223 need_rgctx_tramp = TRUE;
226 *out_need_rgctx_tramp = need_rgctx_tramp;
227 *out_aot_addr = aot_addr;
229 DEBUG_IMT (printf ("mono_convert_imt_slot_to_vtable_slot: method = %s.%s.%s, imt_method = %s.%s.%s\n",
230 method->klass->name_space, method->klass->name, method->name,
231 imt_method->klass->name_space, imt_method->klass->name, imt_method->name));
233 if (vt->imt_collisions_bitmap & (1 << imt_slot)) {
234 int slot = mono_method_get_vtable_index (imt_method);
237 g_assert (slot != -1);
238 vtable_offset = interface_offset + slot;
239 vtable_slot = & (vt->vtable [vtable_offset]);
240 DEBUG_IMT (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));
243 DEBUG_IMT (printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, but not colliding\n", slot, imt_slot));
249 * This is a super-ugly hack to fix bug #616463.
251 * The problem is that we don't always set is_generic for generic
252 * method definitions. See the comment at the end of
253 * mono_class_inflate_generic_method_full_checked() in class.c.
256 is_generic_method_definition (MonoMethod *m)
258 MonoGenericContext *context;
264 context = mono_method_get_context (m);
265 if (!context->method_inst)
267 if (context->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)m)->declaring)->context.method_inst)
273 mini_jit_info_is_gsharedvt (MonoJitInfo *ji)
275 if (ji && ji->has_generic_jit_info && (mono_jit_info_get_generic_sharing_context (ji)->is_gsharedvt))
282 * mini_add_method_trampoline:
285 * @add_static_rgctx_tramp: adds a static rgctx trampoline
286 * @add_unbox_tramp: adds an unboxing trampoline
288 * Add static rgctx/gsharedvt_in/unbox trampolines to
289 * M/COMPILED_METHOD if needed.
291 * Returns the trampoline address, or COMPILED_METHOD if no trampoline
295 mini_add_method_trampoline (MonoMethod *m, gpointer compiled_method, gboolean add_static_rgctx_tramp, gboolean add_unbox_tramp)
297 gpointer addr = compiled_method;
298 gboolean callee_gsharedvt, callee_array_helper;
299 MonoMethod *jmethod = NULL;
302 // FIXME: This loads information from AOT (perf problem)
303 ji = mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
304 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
306 callee_array_helper = FALSE;
307 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
308 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
311 * generic array helpers.
312 * Have to replace the wrappers with the original generic instances.
314 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
315 callee_array_helper = TRUE;
316 m = info->d.generic_array_helper.method;
318 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
319 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
321 /* Same for synchronized inner wrappers */
322 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
323 m = info->d.synchronized_inner.method;
327 if (callee_gsharedvt)
328 g_assert (m->is_inflated);
330 addr = compiled_method;
332 if (add_unbox_tramp) {
334 * The unbox trampolines call the method directly, so need to add
335 * an rgctx tramp before them.
338 addr = mono_aot_get_unbox_trampoline (m);
340 unbox_trampolines ++;
341 addr = mono_arch_get_unbox_trampoline (m, addr);
345 if (ji && !ji->is_trampoline)
346 jmethod = jinfo_get_method (ji);
347 if (callee_gsharedvt && mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod))) {
348 MonoMethodSignature *sig, *gsig;
350 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
352 /* Call from normal/gshared code to gsharedvt code with variable signature */
353 sig = mono_method_signature (m);
354 gsig = mono_method_signature (jmethod);
356 addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, -1, FALSE);
359 g_assert_not_reached ();
360 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
363 if (callee_array_helper) {
364 add_static_rgctx_tramp = FALSE;
365 /* FIXME: ji->from_aot is not set for llvm methods */
366 if (ji && (ji->from_aot || mono_aot_only)) {
367 /* In AOT mode, compiled_method points to one of the InternalArray methods in Array. */
368 if (!mono_llvm_only && mono_method_needs_static_rgctx_invoke (jinfo_get_method (ji), TRUE))
369 add_static_rgctx_tramp = TRUE;
374 add_static_rgctx_tramp = FALSE;
376 if (add_static_rgctx_tramp)
377 addr = mono_create_static_rgctx_trampoline (m, addr);
383 * mini_create_llvmonly_ftndesc:
385 * Create a function descriptor of the form <addr, arg>, which
386 * represents a callee ADDR with ARG as the last argument.
388 * - generic sharing (ARG is the rgctx)
389 * - gsharedvt signature wrappers (ARG is a function descriptor)
392 mini_create_llvmonly_ftndesc (MonoDomain *domain, gpointer addr, gpointer arg)
394 MonoFtnDesc *ftndesc = (MonoFtnDesc*)mono_domain_alloc0 (mono_domain_get (), 2 * sizeof (gpointer));
395 ftndesc->addr = addr;
402 * mini_add_method_wrappers_llvmonly:
404 * Add unbox/gsharedvt wrappers around COMPILED_METHOD if needed. Return the wrapper address or COMPILED_METHOD
405 * if no wrapper is needed. Set OUT_ARG to the rgctx/extra argument needed to be passed to the returned method.
408 mini_add_method_wrappers_llvmonly (MonoMethod *m, gpointer compiled_method, gboolean caller_gsharedvt, gboolean add_unbox_tramp, gpointer *out_arg)
411 gboolean callee_gsharedvt, callee_array_helper;
412 MonoMethod *jmethod = NULL;
415 // FIXME: This loads information from AOT (perf problem)
416 ji = mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
417 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
419 callee_array_helper = FALSE;
420 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
421 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
424 * generic array helpers.
425 * Have to replace the wrappers with the original generic instances.
427 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
428 callee_array_helper = TRUE;
429 m = info->d.generic_array_helper.method;
431 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
432 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
434 /* Same for synchronized inner wrappers */
435 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
436 m = info->d.synchronized_inner.method;
440 if (callee_gsharedvt)
441 g_assert (m->is_inflated);
443 addr = compiled_method;
445 if (add_unbox_tramp) {
447 * The unbox trampolines call the method directly, so need to add
448 * an rgctx tramp before them.
451 addr = mono_aot_get_unbox_trampoline (m);
453 unbox_trampolines ++;
454 addr = mono_arch_get_unbox_trampoline (m, addr);
458 g_assert (mono_llvm_only);
461 if (ji && !ji->is_trampoline)
462 jmethod = jinfo_get_method (ji);
464 if (callee_gsharedvt)
465 callee_gsharedvt = mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod));
467 if (!caller_gsharedvt && callee_gsharedvt) {
468 MonoMethodSignature *sig, *gsig;
469 gpointer wrapper_addr;
471 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
473 /* Call from normal/gshared code to gsharedvt code with variable signature */
474 sig = mono_method_signature (m);
475 gsig = mono_method_signature (jmethod);
477 wrapper_addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, -1, FALSE);
480 * This is a gsharedvt in wrapper, it gets passed a ftndesc for the gsharedvt method as an argument.
482 *out_arg = mini_create_llvmonly_ftndesc (mono_domain_get (), addr, mini_method_get_rgctx (m));
484 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
487 if (!(*out_arg) && mono_method_needs_static_rgctx_invoke (m, FALSE))
488 *out_arg = mini_method_get_rgctx (m);
490 if (caller_gsharedvt && !callee_gsharedvt) {
492 * The callee uses the gsharedvt calling convention, have to add an out wrapper.
494 gpointer out_wrapper = mini_get_gsharedvt_wrapper (FALSE, NULL, mono_method_signature (m), NULL, -1, FALSE);
495 MonoFtnDesc *out_wrapper_arg = mini_create_llvmonly_ftndesc (mono_domain_get (), addr, *out_arg);
498 *out_arg = out_wrapper_arg;
505 * common_call_trampoline_inner:
507 * The code to handle normal, virtual, and interface method calls and jumps, both
508 * from JITted and LLVM compiled code.
511 common_call_trampoline_inner (mgreg_t *regs, guint8 *code, MonoMethod *m, MonoVTable *vt, gpointer *vtable_slot, MonoError *error)
513 gpointer addr, compiled_method;
514 gboolean generic_shared = FALSE;
515 gboolean need_unbox_tramp = FALSE;
516 gboolean need_rgctx_tramp = FALSE;
517 MonoMethod *declaring = NULL;
518 MonoMethod *generic_virtual = NULL, *variant_iface = NULL;
520 gboolean imt_call, virtual_;
521 gpointer *orig_vtable_slot, *vtable_slot_to_patch = NULL;
522 MonoJitInfo *ji = NULL;
524 mono_error_init (error);
526 virtual_ = vt && (gpointer)vtable_slot > (gpointer)vt;
527 imt_call = vt && (gpointer)vtable_slot < (gpointer)vt;
530 * rgctx trampolines are needed when the call is indirect so the caller can't pass
531 * the rgctx argument needed by the callee.
534 need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (m, FALSE);
536 orig_vtable_slot = vtable_slot;
537 vtable_slot_to_patch = vtable_slot;
541 MonoMethod *imt_method = NULL, *impl_method = NULL;
542 MonoObject *this_arg;
544 g_assert (vtable_slot);
546 imt_method = mono_arch_find_imt_method (regs, code);
547 this_arg = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
549 if (mono_object_is_transparent_proxy (this_arg)) {
550 /* Use the slow path for now */
551 m = mono_object_get_virtual_method (this_arg, imt_method);
552 vtable_slot_to_patch = NULL;
554 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
555 /* Generic virtual method */
556 generic_virtual = imt_method;
557 need_rgctx_tramp = TRUE;
560 vtable_slot = mini_resolve_imt_method (vt, vtable_slot, imt_method, &impl_method, &addr, &need_rgctx_tramp, &variant_iface);
561 /* This is the vcall slot which gets called through the IMT thunk */
562 vtable_slot_to_patch = vtable_slot;
566 * We found AOT compiled code for the method, skip the rest.
568 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
571 return mono_create_ftnptr (mono_domain_get (), addr);
579 * The virtual check is needed because is_generic_method_definition (m) could
580 * return TRUE for methods used in IMT calls too.
582 if (virtual_ && is_generic_method_definition (m)) {
584 MonoGenericContext context = { NULL, NULL };
585 MonoMethod *declaring;
588 declaring = mono_method_get_declaring_generic_method (m);
592 if (m->klass->generic_class)
593 context.class_inst = m->klass->generic_class->context.class_inst;
595 g_assert (!m->klass->generic_container);
597 generic_virtual = mono_arch_find_imt_method (regs, code);
598 g_assert (generic_virtual);
599 g_assert (generic_virtual->is_inflated);
600 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
602 m = mono_class_inflate_generic_method_checked (declaring, &context, &error);
603 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
604 /* FIXME: only do this if the method is sharable */
605 need_rgctx_tramp = TRUE;
606 } else if ((context_used = mono_method_check_context_used (m))) {
607 MonoClass *klass = NULL;
608 MonoMethod *actual_method = NULL;
609 MonoVTable *vt = NULL;
610 MonoGenericInst *method_inst = NULL;
613 generic_shared = TRUE;
618 * The caller is gshared code, compute the actual method to call from M and this/rgctx.
620 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
621 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
623 klass = mrgctx->class_vtable->klass;
624 method_inst = mrgctx->method_inst;
625 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
626 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
628 klass = vtable->klass;
630 MonoObject *this_argument = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
632 vt = this_argument->vtable;
633 vtable_slot = orig_vtable_slot;
635 g_assert (this_argument->vtable->klass->inited);
638 mono_class_setup_supertypes (this_argument->vtable->klass);
639 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
643 g_assert (vtable_slot || klass);
646 int displacement = vtable_slot - ((gpointer*)vt);
648 g_assert_not_reached ();
650 g_assert (displacement > 0);
652 actual_method = vt->klass->vtable [displacement];
655 if (method_inst || m->wrapper_type) {
657 MonoGenericContext context = { NULL, NULL };
660 declaring = mono_method_get_declaring_generic_method (m);
664 if (klass->generic_class)
665 context.class_inst = klass->generic_class->context.class_inst;
666 else if (klass->generic_container)
667 context.class_inst = klass->generic_container->context.class_inst;
668 context.method_inst = method_inst;
670 actual_method = mono_class_inflate_generic_method_checked (declaring, &context, &error);
671 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */
673 actual_method = mono_class_get_method_generic (klass, m);
677 g_assert (actual_method);
678 g_assert (actual_method->klass == klass);
680 if (actual_method->is_inflated)
681 declaring = mono_method_get_declaring_generic_method (actual_method);
688 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
689 m = mono_marshal_get_synchronized_wrapper (m);
690 need_rgctx_tramp = FALSE;
693 /* Calls made through delegates on platforms without delegate trampolines */
694 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
695 need_rgctx_tramp = TRUE;
697 addr = compiled_method = mono_jit_compile_method (m, error);
701 if (generic_virtual || variant_iface) {
702 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
703 need_unbox_tramp = TRUE;
704 } else if (orig_vtable_slot) {
705 if (m->klass->valuetype)
706 need_unbox_tramp = TRUE;
709 addr = mini_add_method_trampoline (m, compiled_method, need_rgctx_tramp, need_unbox_tramp);
711 if (generic_virtual || variant_iface) {
712 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
714 vtable_slot = orig_vtable_slot;
715 g_assert (vtable_slot);
717 mono_method_add_generic_virtual_invocation (mono_domain_get (),
724 /* the method was jumped to */
726 MonoDomain *domain = mono_domain_get ();
728 /* Patch the got entries pointing to this method */
730 * We do this here instead of in mono_codegen () to cover the case when m
731 * was loaded from an aot image.
733 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
736 mono_domain_lock (domain);
737 list = (GSList *)g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
739 for (tmp = list; tmp; tmp = tmp->next) {
740 gpointer *got_slot = (gpointer *)tmp->data;
743 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
746 mono_domain_unlock (domain);
752 vtable_slot = orig_vtable_slot;
755 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))) {
756 g_assert (*vtable_slot_to_patch);
757 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
760 guint8 *plt_entry = mono_aot_get_plt_entry (code);
761 gboolean no_patch = FALSE;
762 MonoJitInfo *target_ji;
765 if (generic_shared) {
767 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
769 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
771 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
776 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
778 if (generic_shared) {
779 if (m->wrapper_type != MONO_WRAPPER_NONE)
780 m = mono_marshal_method_from_wrapper (m);
781 //g_assert (mono_method_is_generic_sharable (m, FALSE));
784 /* Patch calling code */
786 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
788 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
790 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
792 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
793 * generic sharing fails.
794 * FIXME: Performance problem.
799 if (!no_patch && mono_method_same_domain (ji, target_ji))
800 mono_arch_patch_callsite ((guint8 *)ji->code_start, code, (guint8 *)addr);
808 common_call_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, MonoVTable *vt, gpointer *vtable_slot, MonoError *error)
811 MONO_PREPARE_RESET_BLOCKING;
812 res = common_call_trampoline_inner (regs, code, m, vt, vtable_slot, error);
813 MONO_FINISH_RESET_BLOCKING;
818 * mono_magic_trampoline:
820 * This trampoline handles normal calls from JITted code.
823 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
827 MONO_PREPARE_RESET_BLOCKING_UNBALANCED;
833 res = common_call_trampoline (regs, code, (MonoMethod *)arg, NULL, NULL, &error);
834 mono_error_set_pending_exception (&error);
836 mono_interruption_checkpoint_from_trampoline ();
838 MONO_FINISH_RESET_BLOCKING_UNBALANCED;
844 * mono_vcall_trampoline:
846 * This trampoline handles virtual calls.
849 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
851 MonoObject *this_arg;
853 gpointer *vtable_slot;
861 * We need to obtain the following pieces of information:
862 * - the method which needs to be compiled.
864 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
865 * the other two can be computed from the vtable + the slot index.
869 * Obtain the vtable from the 'this' arg.
871 this_arg = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
874 vt = this_arg->vtable;
877 /* Normal virtual call */
878 vtable_slot = &(vt->vtable [slot]);
880 /* Avoid loading metadata or creating a generic vtable if possible */
881 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot);
882 if (addr && !vt->klass->valuetype) {
883 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
886 return mono_create_ftnptr (mono_domain_get (), addr);
891 * is_generic_method_definition() above) also
892 * goes away if we do a
893 * mono_class_setup_vtable (vt->klass) here,
894 * because we then inflate the method
895 * correctly, put it in the cache, and the
896 * "wrong" inflation invocation still looks up
897 * the correctly inflated method.
899 * The hack above seems more stable and
902 m = mono_class_get_vtable_entry (vt->klass, slot);
905 vtable_slot = &(((gpointer*)vt) [slot]);
910 res = common_call_trampoline (regs, code, m, vt, vtable_slot, &error);
911 if (!mono_error_ok (&error)) {
912 mono_error_set_pending_exception (&error);
918 #ifndef DISABLE_REMOTING
920 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
923 MonoGenericContext context = { NULL, NULL };
924 MonoMethod *imt_method, *declaring;
929 g_assert (m->is_generic);
932 declaring = mono_method_get_declaring_generic_method (m);
936 if (m->klass->generic_class)
937 context.class_inst = m->klass->generic_class->context.class_inst;
939 g_assert (!m->klass->generic_container);
941 imt_method = mono_arch_find_imt_method (regs, code);
942 if (imt_method->is_inflated)
943 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
944 m = mono_class_inflate_generic_method_checked (declaring, &context, &error);
945 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */;
946 m = mono_marshal_get_remoting_invoke_with_check (m);
948 addr = mono_jit_compile_method (m, &error);
949 if (!mono_error_ok (&error)) {
950 mono_error_set_pending_exception (&error);
960 * mono_aot_trampoline:
962 * This trampoline handles calls made from AOT code. We try to bypass the
963 * normal JIT compilation logic to avoid loading the metadata for the method.
965 #ifdef MONO_ARCH_AOT_SUPPORTED
967 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
972 MonoMethod *method = NULL;
978 image = (MonoImage *)*(gpointer*)(gpointer)token_info;
979 token_info += sizeof (gpointer);
980 token = *(guint32*)(gpointer)token_info;
982 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token);
985 method = mono_get_method_checked (image, token, NULL, NULL, &error);
987 g_error ("Could not load AOT trampoline due to %s", mono_error_get_message (&error));
989 /* Use the generic code */
990 return mono_magic_trampoline (regs, code, method, tramp);
993 addr = mono_create_ftnptr (mono_domain_get (), addr);
995 /* This is a normal call through a PLT entry */
996 plt_entry = mono_aot_get_plt_entry (code);
997 g_assert (plt_entry);
999 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
1005 * mono_aot_plt_trampoline:
1007 * This trampoline handles calls made from AOT code through the PLT table.
1010 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
1013 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
1017 trampoline_calls ++;
1019 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code, &error);
1021 if (!mono_error_ok (&error)) {
1022 mono_error_set_pending_exception (&error);
1025 // FIXME: Error handling (how ?)
1034 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
1036 static gboolean inited = FALSE;
1037 static int num_lookups = 0;
1038 guint32 slot = GPOINTER_TO_UINT (data);
1039 mgreg_t *r = (mgreg_t*)regs;
1040 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
1041 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
1042 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1046 trampoline_calls ++;
1049 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
1056 res = mono_method_fill_runtime_generic_context ((MonoMethodRuntimeGenericContext *)arg, index, &error);
1058 res = mono_class_fill_runtime_generic_context ((MonoVTable *)arg, index, &error);
1059 if (!mono_error_ok (&error)) {
1060 mono_error_set_pending_exception (&error);
1067 * mono_delegate_trampoline:
1069 * This trampoline handles calls made to Delegate:Invoke ().
1070 * This is called once the first time a delegate is invoked, so it must be fast.
1073 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *arg, guint8* tramp)
1075 MonoDomain *domain = mono_domain_get ();
1076 MonoDelegate *delegate;
1079 MonoMethod *method = NULL;
1081 gboolean multicast, callvirt = FALSE, closed_over_null = FALSE;
1082 gboolean need_rgctx_tramp = FALSE;
1083 gboolean need_unbox_tramp = FALSE;
1084 gboolean enable_caching = TRUE;
1085 MonoDelegateTrampInfo *tramp_info = (MonoDelegateTrampInfo*)arg;
1086 MonoMethod *invoke = tramp_info->invoke;
1087 guint8 *impl_this = (guint8 *)tramp_info->impl_this;
1088 guint8 *impl_nothis = (guint8 *)tramp_info->impl_nothis;
1090 MonoMethodSignature *sig;
1091 gpointer addr, compiled_method;
1092 gboolean is_remote = FALSE;
1094 trampoline_calls ++;
1096 /* Obtain the delegate object according to the calling convention */
1097 delegate = (MonoDelegate *)mono_arch_get_this_arg_from_call (regs, code);
1098 g_assert (mono_class_has_parent (mono_object_class (delegate), mono_defaults.multicastdelegate_class));
1100 if (delegate->method) {
1101 method = delegate->method;
1104 * delegate->method_ptr == NULL means the delegate was initialized by
1105 * mini_delegate_ctor, while != NULL means it is initialized by
1106 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
1107 * (ctor_with_method () does this, but it doesn't store the wrapper back into
1108 * delegate->method).
1110 #ifndef DISABLE_REMOTING
1111 if (delegate->target && delegate->target->vtable->klass == mono_defaults.transparent_proxy_class) {
1114 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_class_get_com_object_class () &&
1115 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1117 method = mono_marshal_get_remoting_invoke (method);
1121 sig = tramp_info->sig;
1122 if (!(sig && method == tramp_info->method)) {
1123 mono_error_init (&err);
1124 sig = mono_method_signature_checked (method, &err);
1126 mono_error_set_pending_exception (&err);
1131 if (sig->hasthis && method->klass->valuetype) {
1132 gboolean need_unbox = TRUE;
1134 if (tramp_info->invoke_sig->param_count > sig->param_count && tramp_info->invoke_sig->params [0]->byref)
1139 need_unbox_tramp = TRUE;
1141 method = mono_marshal_get_unbox_wrapper (method);
1145 // If "delegate->method_ptr" is null mono_get_addr_from_ftnptr will fail if
1146 // ftnptrs are being used. "method" would end up null on archtitectures without
1147 // ftnptrs so we can just skip this.
1148 } else if (delegate->method_ptr) {
1149 ji = mono_jit_info_table_find (domain, (char *)mono_get_addr_from_ftnptr (delegate->method_ptr));
1151 method = jinfo_get_method (ji);
1155 sig = tramp_info->sig;
1156 if (!(sig && method == tramp_info->method)) {
1157 mono_error_init (&err);
1158 sig = mono_method_signature_checked (method, &err);
1160 mono_error_set_pending_exception (&err);
1165 callvirt = !delegate->target && sig->hasthis;
1167 closed_over_null = tramp_info->invoke_sig->param_count == sig->param_count;
1169 if (callvirt && !closed_over_null) {
1171 * The delegate needs to make a virtual call to the target method using its
1172 * first argument as the receiver. This is hard to support in full-aot, so
1173 * optimize it in some cases if possible.
1174 * If the target method is not virtual or is in a sealed class,
1175 * the vcall will call it directly.
1176 * If the call doesn't return a valuetype, then the vcall uses the same calling
1177 * convention as a normal call.
1179 if (((method->klass->flags & TYPE_ATTRIBUTE_SEALED) || !(method->flags & METHOD_ATTRIBUTE_VIRTUAL)) && !MONO_TYPE_ISSTRUCT (sig->ret)) {
1181 enable_caching = FALSE;
1185 if (delegate->target &&
1186 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1187 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1188 method->klass->flags & TYPE_ATTRIBUTE_ABSTRACT) {
1189 method = mono_object_get_virtual_method (delegate->target, method);
1190 enable_caching = FALSE;
1193 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1194 method = mono_marshal_get_synchronized_wrapper (method);
1196 if (method == tramp_info->method)
1197 need_rgctx_tramp = tramp_info->need_rgctx_tramp;
1198 else if (mono_method_needs_static_rgctx_invoke (method, FALSE))
1199 need_rgctx_tramp = TRUE;
1203 * If the called address is a trampoline, replace it with the compiled method so
1204 * further calls don't have to go through the trampoline.
1206 if (method && !callvirt) {
1207 /* Avoid the overhead of looking up an already compiled method if possible */
1208 if (enable_caching && delegate->method_code && *delegate->method_code) {
1209 delegate->method_ptr = *delegate->method_code;
1211 compiled_method = addr = mono_jit_compile_method (method, &error);
1212 if (!mono_error_ok (&error)) {
1213 mono_error_set_pending_exception (&error);
1216 addr = mini_add_method_trampoline (method, compiled_method, need_rgctx_tramp, need_unbox_tramp);
1217 delegate->method_ptr = addr;
1218 if (enable_caching && delegate->method_code)
1219 *delegate->method_code = (guint8 *)delegate->method_ptr;
1222 if (need_rgctx_tramp)
1223 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1226 /* Necessary for !code condition to fallback to slow path */
1229 multicast = ((MonoMulticastDelegate*)delegate)->delegates != NULL;
1230 if (!multicast && !callvirt) {
1231 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1232 /* Closed static delegate */
1235 code = delegate->target ? impl_this : impl_nothis;
1239 /* The general, unoptimized case */
1240 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1241 code = (guint8 *)mono_jit_compile_method (m, &error);
1242 if (!mono_error_ok (&error)) {
1243 mono_error_set_pending_exception (&error);
1246 code = (guint8 *)mini_add_method_trampoline (m, code, mono_method_needs_static_rgctx_invoke (m, FALSE), FALSE);
1249 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1250 if (enable_caching && !callvirt && tramp_info->method) {
1251 tramp_info->method_ptr = delegate->method_ptr;
1252 tramp_info->invoke_impl = delegate->invoke_impl;
1258 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1260 mono_handler_block_guard_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_info, guint8* tramp)
1264 MonoJitTlsData *jit_tls = (MonoJitTlsData *)mono_native_tls_get_value (mono_jit_tls_id);
1265 gpointer resume_ip = jit_tls->handler_block_return_address;
1267 memcpy (&ctx, &jit_tls->handler_block_context, sizeof (MonoContext));
1268 MONO_CONTEXT_SET_IP (&ctx, jit_tls->handler_block_return_address);
1270 jit_tls->handler_block_return_address = NULL;
1271 jit_tls->handler_block = NULL;
1273 if (!resume_ip) /*this should not happen, but we should avoid crashing */
1274 exc = mono_get_exception_execution_engine ("Invalid internal state, resuming abort after handler block but no resume ip found");
1276 exc = mono_thread_resume_interruption ();
1279 mono_handle_exception (&ctx, (MonoObject *)exc);
1280 mono_restore_context (&ctx);
1287 mono_create_handler_block_trampoline (void)
1289 static gpointer code;
1291 mono_memory_barrier ();
1295 g_assert (!mono_aot_only);
1297 mono_trampolines_lock ();
1300 MonoTrampInfo *info;
1303 tmp = mono_arch_create_handler_block_trampoline (&info, FALSE);
1304 mono_tramp_info_register (info, NULL);
1305 mono_memory_barrier ();
1308 mono_trampolines_unlock ();
1315 * mono_get_trampoline_func:
1317 * Return the C function which needs to be called by the generic trampoline of type
1321 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1323 switch (tramp_type) {
1324 case MONO_TRAMPOLINE_JIT:
1325 case MONO_TRAMPOLINE_JUMP:
1326 return mono_magic_trampoline;
1327 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1328 return mono_rgctx_lazy_fetch_trampoline;
1329 #ifdef MONO_ARCH_AOT_SUPPORTED
1330 case MONO_TRAMPOLINE_AOT:
1331 return mono_aot_trampoline;
1332 case MONO_TRAMPOLINE_AOT_PLT:
1333 return mono_aot_plt_trampoline;
1335 case MONO_TRAMPOLINE_DELEGATE:
1336 return mono_delegate_trampoline;
1337 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1338 return mono_altstack_restore_prot;
1339 #ifndef DISABLE_REMOTING
1340 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1341 return mono_generic_virtual_remoting_trampoline;
1343 case MONO_TRAMPOLINE_VCALL:
1344 return mono_vcall_trampoline;
1345 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1346 case MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD:
1347 return mono_handler_block_guard_trampoline;
1350 g_assert_not_reached ();
1356 create_trampoline_code (MonoTrampolineType tramp_type)
1358 MonoTrampInfo *info;
1361 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1362 mono_tramp_info_register (info, NULL);
1368 mono_trampolines_init (void)
1370 mono_os_mutex_init_recursive (&trampolines_mutex);
1375 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1376 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1377 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1378 #ifdef MONO_ARCH_AOT_SUPPORTED
1379 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1380 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1382 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1383 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1384 #ifndef DISABLE_REMOTING
1385 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1387 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1388 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1389 mono_trampoline_code [MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD] = create_trampoline_code (MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD);
1390 mono_create_handler_block_trampoline ();
1393 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1394 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1395 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1396 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1400 mono_trampolines_cleanup (void)
1402 if (rgctx_lazy_fetch_trampoline_hash)
1403 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1404 if (rgctx_lazy_fetch_trampoline_hash_addr)
1405 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1407 mono_os_mutex_destroy (&trampolines_mutex);
1411 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1413 g_assert (mono_trampoline_code [tramp_type]);
1415 return mono_trampoline_code [tramp_type];
1419 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1422 return mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, code_len);
1424 return mono_arch_create_specific_trampoline (arg1, tramp_type, domain, code_len);
1428 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper, MonoError *error)
1432 guint32 code_size = 0;
1434 mono_error_init (error);
1436 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1438 * We cannot recover the correct type of a shared generic
1439 * method from its native code address, so we use the
1440 * trampoline instead.
1441 * For synchronized methods, the trampoline adds the wrapper.
1443 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1446 if (mono_llvm_only) {
1447 code = mono_jit_compile_method (method, error);
1448 if (!mono_error_ok (error))
1453 mono_domain_lock (domain);
1454 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1455 mono_domain_unlock (domain);
1459 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1460 g_assert (code_size);
1462 ji = (MonoJitInfo *)mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1463 ji->code_start = code;
1464 ji->code_size = code_size;
1465 ji->d.method = method;
1468 * mono_delegate_ctor needs to find the method metadata from the
1469 * trampoline address, so we save it here.
1472 mono_jit_info_table_add (domain, ji);
1474 mono_domain_lock (domain);
1475 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1476 mono_domain_unlock (domain);
1478 return ji->code_start;
1482 method_not_found (void)
1484 g_assert_not_reached ();
1488 mono_create_jit_trampoline (MonoDomain *domain, MonoMethod *method, MonoError *error)
1492 mono_error_init (error);
1494 if (mono_aot_only) {
1495 /* Avoid creating trampolines if possible */
1496 gpointer code = mono_jit_find_compiled_method (domain, method);
1500 if (mono_llvm_only) {
1501 if (method->wrapper_type == MONO_WRAPPER_PROXY_ISINST || method->wrapper_type == MONO_WRAPPER_LDFLD_REMOTE ||
1502 method->wrapper_type == MONO_WRAPPER_STFLD_REMOTE)
1503 /* These wrappers are not generated */
1504 return method_not_found;
1505 /* Methods are lazily initialized on first call, so this can't lead recursion */
1506 code = mono_jit_compile_method (method, error);
1507 if (!mono_error_ok (error))
1513 mono_domain_lock (domain);
1514 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1515 mono_domain_unlock (domain);
1519 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1521 mono_domain_lock (domain);
1522 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1523 mono_domain_unlock (domain);
1531 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
1535 MonoDomain *domain = mono_domain_get ();
1536 guint8 *buf, *start;
1538 buf = start = (guint8 *)mono_domain_alloc0 (domain, 2 * sizeof (gpointer));
1540 *(gpointer*)(gpointer)buf = image;
1541 buf += sizeof (gpointer);
1542 *(guint32*)(gpointer)buf = token;
1544 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
1553 * mono_create_delegate_trampoline_info:
1555 * Create a trampoline info structure for the KLASS+METHOD pair.
1557 MonoDelegateTrampInfo*
1558 mono_create_delegate_trampoline_info (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1562 MonoDelegateTrampInfo *tramp_info;
1563 MonoClassMethodPair pair, *dpair;
1564 guint32 code_size = 0;
1567 pair.method = method;
1568 mono_domain_lock (domain);
1569 tramp_info = (MonoDelegateTrampInfo *)g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, &pair);
1570 mono_domain_unlock (domain);
1574 invoke = mono_get_delegate_invoke (klass);
1577 tramp_info = (MonoDelegateTrampInfo *)mono_domain_alloc0 (domain, sizeof (MonoDelegateTrampInfo));
1578 tramp_info->invoke = invoke;
1579 tramp_info->invoke_sig = mono_method_signature (invoke);
1580 tramp_info->impl_this = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1581 tramp_info->impl_nothis = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1582 tramp_info->method = method;
1584 mono_error_init (&error);
1585 tramp_info->sig = mono_method_signature_checked (method, &error);
1586 tramp_info->need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (method, FALSE);
1588 tramp_info->invoke_impl = mono_create_specific_trampoline (tramp_info, MONO_TRAMPOLINE_DELEGATE, domain, &code_size);
1589 g_assert (code_size);
1591 dpair = (MonoClassMethodPair *)mono_domain_alloc0 (domain, sizeof (MonoClassMethodPair));
1592 memcpy (dpair, &pair, sizeof (MonoClassMethodPair));
1594 /* store trampoline address */
1595 mono_domain_lock (domain);
1596 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash, dpair, tramp_info);
1597 mono_domain_unlock (domain);
1603 no_delegate_trampoline (void)
1605 g_assert_not_reached ();
1609 mono_create_delegate_trampoline (MonoDomain *domain, MonoClass *klass)
1612 return no_delegate_trampoline;
1614 return mono_create_delegate_trampoline_info (domain, klass, NULL)->invoke_impl;
1618 mono_create_delegate_virtual_trampoline (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1620 MonoMethod *invoke = mono_get_delegate_invoke (klass);
1623 return mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), method);
1627 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1629 static gboolean inited = FALSE;
1630 static int num_trampolines = 0;
1631 MonoTrampInfo *info;
1633 gpointer tramp, ptr;
1635 mono_trampolines_lock ();
1636 if (rgctx_lazy_fetch_trampoline_hash)
1637 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1640 mono_trampolines_unlock ();
1644 if (mono_aot_only) {
1645 ptr = mono_aot_get_lazy_fetch_trampoline (offset);
1647 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1648 mono_tramp_info_register (info, NULL);
1649 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1652 mono_trampolines_lock ();
1653 if (!rgctx_lazy_fetch_trampoline_hash) {
1654 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1655 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1657 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1658 g_assert (offset != -1);
1659 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1660 mono_trampolines_unlock ();
1663 mono_counters_register ("RGCTX num lazy fetch trampolines",
1664 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1673 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1677 mono_trampolines_lock ();
1678 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1679 /* We store the real offset + 1 so we can detect when the lookup fails */
1680 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1688 mono_trampolines_unlock ();
1692 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1699 "restore_stack_prot",
1700 "generic_virtual_remoting",
1702 "handler_block_guard"
1706 * mono_get_generic_trampoline_simple_name:
1710 mono_get_generic_trampoline_simple_name (MonoTrampolineType tramp_type)
1712 return tramp_names [tramp_type];
1716 * mono_get_generic_trampoline_name:
1718 * Returns a pointer to malloc-ed memory.
1721 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1723 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1727 * mono_get_rgctx_fetch_trampoline_name:
1729 * Returns a pointer to malloc-ed memory.
1732 mono_get_rgctx_fetch_trampoline_name (int slot)
1737 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1738 index = MONO_RGCTX_SLOT_INDEX (slot);
1740 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);
1744 * mini_get_single_step_trampoline:
1746 * Return a trampoline which calls debugger_agent_single_step_from_context ().
1749 mini_get_single_step_trampoline (void)
1751 static gpointer trampoline;
1756 if (mono_aot_only) {
1757 tramp = mono_aot_get_trampoline ("sdb_single_step_trampoline");
1759 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1760 MonoTrampInfo *info;
1761 tramp = mono_arch_create_sdb_trampoline (TRUE, &info, FALSE);
1762 mono_tramp_info_register (info, NULL);
1765 g_assert_not_reached ();
1768 mono_memory_barrier ();
1776 * mini_get_breakpoint_trampoline:
1778 * Return a trampoline which calls debugger_agent_breakpoint_from_context ().
1781 mini_get_breakpoint_trampoline (void)
1783 static gpointer trampoline;
1788 if (mono_aot_only) {
1789 tramp = mono_aot_get_trampoline ("sdb_breakpoint_trampoline");
1791 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1792 MonoTrampInfo *info;
1793 tramp = mono_arch_create_sdb_trampoline (FALSE, &info, FALSE);
1794 mono_tramp_info_register (info, NULL);
1797 g_assert_not_reached ();
1800 mono_memory_barrier ();