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>
18 #include <mono/utils/mono-threads-coop.h>
24 * Address of the trampoline code. This is used by the debugger to check
25 * whether a method is a trampoline.
27 guint8* mono_trampoline_code [MONO_TRAMPOLINE_NUM];
29 static GHashTable *rgctx_lazy_fetch_trampoline_hash;
30 static GHashTable *rgctx_lazy_fetch_trampoline_hash_addr;
31 static guint32 trampoline_calls, jit_trampolines, unbox_trampolines, static_rgctx_trampolines;
33 #define mono_trampolines_lock() mono_os_mutex_lock (&trampolines_mutex)
34 #define mono_trampolines_unlock() mono_os_mutex_unlock (&trampolines_mutex)
35 static mono_mutex_t trampolines_mutex;
37 #ifdef MONO_ARCH_GSHARED_SUPPORTED
45 rgctx_tramp_info_equal (gconstpointer ka, gconstpointer kb)
47 const RgctxTrampInfo *i1 = (const RgctxTrampInfo *)ka;
48 const RgctxTrampInfo *i2 = (const RgctxTrampInfo *)kb;
50 if (i1->m == i2->m && i1->addr == i2->addr)
57 rgctx_tramp_info_hash (gconstpointer data)
59 const RgctxTrampInfo *info = (const RgctxTrampInfo *)data;
61 return GPOINTER_TO_UINT (info->m) ^ GPOINTER_TO_UINT (info->addr);
65 * mono_create_static_rgctx_trampoline:
66 * @m: the mono method to create a trampoline for
67 * @addr: the address to jump to (where the compiled code for M lives)
69 * Creates a static rgctx trampoline for M which branches to ADDR which should
70 * point to the compiled code of M.
72 * Static rgctx trampolines are used when a shared generic method which doesn't
73 * have a this argument is called indirectly, ie. from code which can't pass in
74 * the rgctx argument. The trampoline sets the rgctx argument and jumps to the
75 * methods code. These trampolines are similar to the unbox trampolines, they
76 * perform the same task as the static rgctx wrappers, but they are smaller/faster,
77 * and can be made to work with full AOT.
79 * On PPC addr should be an ftnptr and the return value is an ftnptr too.
81 * Returns the generated static rgctx trampoline.
84 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
89 RgctxTrampInfo tmp_info;
92 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
93 g_assert (((gpointer*)addr) [2] == 0);
96 ctx = mini_method_get_rgctx (m);
98 domain = mono_domain_get ();
101 * In the AOT case, addr might point to either the method, or to an unbox trampoline,
102 * so make the hash keyed on the m+addr pair.
104 mono_domain_lock (domain);
105 if (!domain_jit_info (domain)->static_rgctx_trampoline_hash)
106 domain_jit_info (domain)->static_rgctx_trampoline_hash = g_hash_table_new (rgctx_tramp_info_hash, rgctx_tramp_info_equal);
108 tmp_info.addr = addr;
109 res = g_hash_table_lookup (domain_jit_info (domain)->static_rgctx_trampoline_hash,
111 mono_domain_unlock (domain);
116 res = mono_aot_get_static_rgctx_trampoline (ctx, addr);
118 res = mono_arch_get_static_rgctx_trampoline (m, (MonoMethodRuntimeGenericContext *)ctx, addr);
120 mono_domain_lock (domain);
121 /* Duplicates inserted while we didn't hold the lock are OK */
122 info = (RgctxTrampInfo *)mono_domain_alloc (domain, sizeof (RgctxTrampInfo));
125 g_hash_table_insert (domain_jit_info (domain)->static_rgctx_trampoline_hash, info, res);
126 mono_domain_unlock (domain);
128 static_rgctx_trampolines ++;
134 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
137 * This shouldn't happen as all arches which support generic sharing support
138 * static rgctx trampolines as well.
140 g_assert_not_reached ();
145 #define DEBUG_IMT(stmt) do { stmt; } while (0)
147 #define DEBUG_IMT(stmt) do { } while (0)
151 * mini_resolve_imt_method:
153 * Resolve the actual method called when making an IMT call through VTABLE_SLOT with IMT_METHOD as the interface method.
155 * Either IMPL_METHOD or OUT_AOT_ADDR will be set on return.
158 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, MonoError *error)
160 MonoMethod *impl = NULL, *generic_virtual = NULL;
161 gboolean lookup_aot, variance_used = FALSE, need_rgctx_tramp = FALSE;
163 guint8 *aot_addr = NULL;
164 int displacement = vtable_slot - ((gpointer*)vt);
165 int interface_offset;
166 int imt_slot = MONO_IMT_SIZE + displacement;
168 g_assert (imt_slot < MONO_IMT_SIZE);
171 /* This has to be variance aware since imt_method can be from an interface that vt->klass doesn't directly implement */
172 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, MONO_TYPE_NAME_FORMAT_IL), mono_type_get_name_full (&imt_method->klass->byval_arg, MONO_TYPE_NAME_FORMAT_IL));
176 *variant_iface = NULL;
177 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
178 /* Generic virtual method */
179 generic_virtual = imt_method;
180 need_rgctx_tramp = TRUE;
181 } else if (variance_used && mono_class_has_variant_generic_params (imt_method->klass)) {
182 *variant_iface = imt_method;
186 /* We can only use the AOT compiled code if we don't require further processing */
187 lookup_aot = !generic_virtual & !variant_iface;
190 mono_vtable_build_imt_slot (vt, mono_method_get_imt_slot (imt_method));
192 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
193 MonoGenericContext context = { NULL, NULL };
196 * Generic virtual method, imt_method contains the inflated interface
197 * method, need to get the inflated impl method.
199 /* imt_method->slot might not be set */
200 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_declaring_generic_method (imt_method)->slot);
202 if (mono_class_is_ginst (impl->klass))
203 context.class_inst = mono_class_get_generic_class (impl->klass)->context.class_inst;
204 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
205 impl = mono_class_inflate_generic_method_checked (impl, &context, error);
206 mono_error_assert_ok (error);
209 /* Avoid loading metadata or creating a generic vtable if possible */
210 if (lookup_aot && !vt->klass->valuetype) {
211 aot_addr = (guint8 *)mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, interface_offset + mono_method_get_vtable_slot (imt_method), error);
212 return_val_if_nok (error, NULL);
219 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_vtable_slot (imt_method));
222 if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
223 need_rgctx_tramp = TRUE;
224 if (impl && impl->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
225 WrapperInfo *info = mono_marshal_get_wrapper_info (impl);
227 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER)
228 need_rgctx_tramp = TRUE;
231 *out_need_rgctx_tramp = need_rgctx_tramp;
232 *out_aot_addr = aot_addr;
234 DEBUG_IMT (printf ("mono_convert_imt_slot_to_vtable_slot: method = %s.%s.%s, imt_method = %s.%s.%s\n",
235 method->klass->name_space, method->klass->name, method->name,
236 imt_method->klass->name_space, imt_method->klass->name, imt_method->name));
238 if (vt->imt_collisions_bitmap & (1 << imt_slot)) {
239 int slot = mono_method_get_vtable_index (imt_method);
242 g_assert (slot != -1);
243 vtable_offset = interface_offset + slot;
244 vtable_slot = & (vt->vtable [vtable_offset]);
245 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));
248 DEBUG_IMT (printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, but not colliding\n", slot, imt_slot));
254 * This is a super-ugly hack to fix bug #616463.
256 * The problem is that we don't always set is_generic for generic
257 * method definitions. See the comment at the end of
258 * mono_class_inflate_generic_method_full_checked() in class.c.
261 is_generic_method_definition (MonoMethod *m)
263 MonoGenericContext *context;
269 context = mono_method_get_context (m);
270 if (!context->method_inst)
272 if (context->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)m)->declaring)->context.method_inst)
278 mini_jit_info_is_gsharedvt (MonoJitInfo *ji)
280 if (ji && ji->has_generic_jit_info && (mono_jit_info_get_generic_sharing_context (ji)->is_gsharedvt))
287 * mini_add_method_trampoline:
290 * @add_static_rgctx_tramp: adds a static rgctx trampoline
291 * @add_unbox_tramp: adds an unboxing trampoline
293 * Add static rgctx/gsharedvt_in/unbox trampolines to
294 * M/COMPILED_METHOD if needed.
296 * Returns the trampoline address, or COMPILED_METHOD if no trampoline
300 mini_add_method_trampoline (MonoMethod *m, gpointer compiled_method, gboolean add_static_rgctx_tramp, gboolean add_unbox_tramp)
302 gpointer addr = compiled_method;
303 gboolean callee_gsharedvt, callee_array_helper;
304 MonoMethod *jmethod = NULL;
307 // FIXME: This loads information from AOT (perf problem)
308 ji = mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
309 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
311 callee_array_helper = FALSE;
312 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
313 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
316 * generic array helpers.
317 * Have to replace the wrappers with the original generic instances.
319 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
320 callee_array_helper = TRUE;
321 m = info->d.generic_array_helper.method;
323 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
324 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
326 /* Same for synchronized inner wrappers */
327 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
328 m = info->d.synchronized_inner.method;
332 if (callee_gsharedvt)
333 g_assert (m->is_inflated);
335 addr = compiled_method;
337 if (add_unbox_tramp) {
339 * The unbox trampolines call the method directly, so need to add
340 * an rgctx tramp before them.
343 addr = mono_aot_get_unbox_trampoline (m);
345 unbox_trampolines ++;
346 addr = mono_arch_get_unbox_trampoline (m, addr);
350 if (ji && !ji->is_trampoline)
351 jmethod = jinfo_get_method (ji);
352 if (callee_gsharedvt && mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod))) {
353 MonoMethodSignature *sig, *gsig;
355 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
357 /* Call from normal/gshared code to gsharedvt code with variable signature */
358 sig = mono_method_signature (m);
359 gsig = mono_method_signature (jmethod);
361 addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, -1, FALSE);
364 g_assert_not_reached ();
365 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
368 if (callee_array_helper) {
369 add_static_rgctx_tramp = FALSE;
370 /* In AOT mode, compiled_method points to one of the InternalArray methods in Array. */
371 if (ji && !mono_llvm_only && mono_method_needs_static_rgctx_invoke (jinfo_get_method (ji), TRUE))
372 add_static_rgctx_tramp = TRUE;
376 add_static_rgctx_tramp = FALSE;
378 if (add_static_rgctx_tramp)
379 addr = mono_create_static_rgctx_trampoline (m, addr);
385 * mini_create_llvmonly_ftndesc:
387 * Create a function descriptor of the form <addr, arg>, which
388 * represents a callee ADDR with ARG as the last argument.
390 * - generic sharing (ARG is the rgctx)
391 * - gsharedvt signature wrappers (ARG is a function descriptor)
394 mini_create_llvmonly_ftndesc (MonoDomain *domain, gpointer addr, gpointer arg)
396 MonoFtnDesc *ftndesc = (MonoFtnDesc*)mono_domain_alloc0 (mono_domain_get (), 2 * sizeof (gpointer));
397 ftndesc->addr = addr;
404 * mini_add_method_wrappers_llvmonly:
406 * Add unbox/gsharedvt wrappers around COMPILED_METHOD if needed. Return the wrapper address or COMPILED_METHOD
407 * if no wrapper is needed. Set OUT_ARG to the rgctx/extra argument needed to be passed to the returned method.
410 mini_add_method_wrappers_llvmonly (MonoMethod *m, gpointer compiled_method, gboolean caller_gsharedvt, gboolean add_unbox_tramp, gpointer *out_arg)
413 gboolean callee_gsharedvt, callee_array_helper;
414 MonoMethod *jmethod = NULL;
417 // FIXME: This loads information from AOT (perf problem)
418 ji = mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
419 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
421 callee_array_helper = FALSE;
422 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
423 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
426 * generic array helpers.
427 * Have to replace the wrappers with the original generic instances.
429 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
430 callee_array_helper = TRUE;
431 m = info->d.generic_array_helper.method;
433 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
434 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
436 /* Same for synchronized inner wrappers */
437 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
438 m = info->d.synchronized_inner.method;
442 if (callee_gsharedvt)
443 g_assert (m->is_inflated);
445 addr = compiled_method;
447 if (add_unbox_tramp) {
449 * The unbox trampolines call the method directly, so need to add
450 * an rgctx tramp before them.
453 addr = mono_aot_get_unbox_trampoline (m);
455 unbox_trampolines ++;
456 addr = mono_arch_get_unbox_trampoline (m, addr);
460 g_assert (mono_llvm_only);
463 if (ji && !ji->is_trampoline)
464 jmethod = jinfo_get_method (ji);
466 if (callee_gsharedvt)
467 callee_gsharedvt = mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod));
469 if (!caller_gsharedvt && callee_gsharedvt) {
470 MonoMethodSignature *sig, *gsig;
471 gpointer wrapper_addr;
473 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
475 /* Call from normal/gshared code to gsharedvt code with variable signature */
476 sig = mono_method_signature (m);
477 gsig = mono_method_signature (jmethod);
479 wrapper_addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, -1, FALSE);
482 * This is a gsharedvt in wrapper, it gets passed a ftndesc for the gsharedvt method as an argument.
484 *out_arg = mini_create_llvmonly_ftndesc (mono_domain_get (), addr, mini_method_get_rgctx (m));
486 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
489 if (!(*out_arg) && mono_method_needs_static_rgctx_invoke (m, FALSE))
490 *out_arg = mini_method_get_rgctx (m);
492 if (caller_gsharedvt && !callee_gsharedvt) {
494 * The callee uses the gsharedvt calling convention, have to add an out wrapper.
496 gpointer out_wrapper = mini_get_gsharedvt_wrapper (FALSE, NULL, mono_method_signature (m), NULL, -1, FALSE);
497 MonoFtnDesc *out_wrapper_arg = mini_create_llvmonly_ftndesc (mono_domain_get (), addr, *out_arg);
500 *out_arg = out_wrapper_arg;
507 * common_call_trampoline:
509 * The code to handle normal, virtual, and interface method calls and jumps, both
510 * from JITted and LLVM compiled code.
513 common_call_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, MonoVTable *vt, gpointer *vtable_slot, MonoError *error)
515 gpointer addr, compiled_method;
516 gboolean generic_shared = FALSE;
517 gboolean need_unbox_tramp = FALSE;
518 gboolean need_rgctx_tramp = FALSE;
519 MonoMethod *declaring = NULL;
520 MonoMethod *generic_virtual = NULL, *variant_iface = NULL;
522 gboolean imt_call, virtual_;
523 gpointer *orig_vtable_slot, *vtable_slot_to_patch = NULL;
524 MonoJitInfo *ji = NULL;
528 virtual_ = vt && (gpointer)vtable_slot > (gpointer)vt;
529 imt_call = vt && (gpointer)vtable_slot < (gpointer)vt;
532 * rgctx trampolines are needed when the call is indirect so the caller can't pass
533 * the rgctx argument needed by the callee.
536 need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (m, FALSE);
538 orig_vtable_slot = vtable_slot;
539 vtable_slot_to_patch = vtable_slot;
543 MonoMethod *imt_method = NULL, *impl_method = NULL;
544 MonoObject *this_arg;
546 g_assert (vtable_slot);
548 imt_method = mono_arch_find_imt_method (regs, code);
549 this_arg = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
551 if (mono_object_is_transparent_proxy (this_arg)) {
552 /* Use the slow path for now */
553 m = mono_object_get_virtual_method (this_arg, imt_method);
554 vtable_slot_to_patch = NULL;
556 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
557 /* Generic virtual method */
558 generic_virtual = imt_method;
559 need_rgctx_tramp = TRUE;
562 vtable_slot = mini_resolve_imt_method (vt, vtable_slot, imt_method, &impl_method, &addr, &need_rgctx_tramp, &variant_iface, error);
563 return_val_if_nok (error, NULL);
565 /* This is the vcall slot which gets called through the IMT trampoline */
566 vtable_slot_to_patch = vtable_slot;
570 * We found AOT compiled code for the method, skip the rest.
572 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
575 return mono_create_ftnptr (mono_domain_get (), addr);
583 * The virtual check is needed because is_generic_method_definition (m) could
584 * return TRUE for methods used in IMT calls too.
586 if (virtual_ && is_generic_method_definition (m)) {
587 MonoGenericContext context = { NULL, NULL };
588 MonoMethod *declaring;
591 declaring = mono_method_get_declaring_generic_method (m);
595 if (mono_class_is_ginst (m->klass))
596 context.class_inst = mono_class_get_generic_class (m->klass)->context.class_inst;
598 g_assert (!mono_class_is_gtd (m->klass));
600 generic_virtual = mono_arch_find_imt_method (regs, code);
601 g_assert (generic_virtual);
602 g_assert (generic_virtual->is_inflated);
603 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
605 m = mono_class_inflate_generic_method_checked (declaring, &context, error);
606 mono_error_assert_ok (error);
607 /* FIXME: only do this if the method is sharable */
608 need_rgctx_tramp = TRUE;
609 } else if ((context_used = mono_method_check_context_used (m))) {
610 MonoClass *klass = NULL;
611 MonoMethod *actual_method = NULL;
612 MonoVTable *vt = NULL;
613 MonoGenericInst *method_inst = NULL;
616 generic_shared = TRUE;
621 * The caller is gshared code, compute the actual method to call from M and this/rgctx.
623 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
624 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
626 klass = mrgctx->class_vtable->klass;
627 method_inst = mrgctx->method_inst;
628 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
629 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
631 klass = vtable->klass;
633 MonoObject *this_argument = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
635 vt = this_argument->vtable;
636 vtable_slot = orig_vtable_slot;
638 g_assert (this_argument->vtable->klass->inited);
641 mono_class_setup_supertypes (this_argument->vtable->klass);
642 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
646 g_assert (vtable_slot || klass);
649 int displacement = vtable_slot - ((gpointer*)vt);
651 g_assert_not_reached ();
653 g_assert (displacement > 0);
655 actual_method = vt->klass->vtable [displacement];
658 if (method_inst || m->wrapper_type) {
659 MonoGenericContext context = { NULL, NULL };
662 declaring = mono_method_get_declaring_generic_method (m);
666 if (mono_class_is_ginst (klass))
667 context.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
668 else if (mono_class_is_gtd (klass))
669 context.class_inst = mono_class_get_generic_container (klass)->context.class_inst;
670 context.method_inst = method_inst;
672 actual_method = mono_class_inflate_generic_method_checked (declaring, &context, error);
673 mono_error_assert_ok (error);
675 actual_method = mono_class_get_method_generic (klass, m);
679 g_assert (actual_method);
680 g_assert (actual_method->klass == klass);
682 if (actual_method->is_inflated)
683 declaring = mono_method_get_declaring_generic_method (actual_method);
690 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
691 m = mono_marshal_get_synchronized_wrapper (m);
692 need_rgctx_tramp = FALSE;
695 /* Calls made through delegates on platforms without delegate trampolines */
696 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
697 need_rgctx_tramp = TRUE;
699 addr = compiled_method = mono_jit_compile_method (m, error);
703 if (generic_virtual || variant_iface) {
704 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
705 need_unbox_tramp = TRUE;
706 } else if (orig_vtable_slot) {
707 if (m->klass->valuetype)
708 need_unbox_tramp = TRUE;
711 addr = mini_add_method_trampoline (m, compiled_method, need_rgctx_tramp, need_unbox_tramp);
713 if (generic_virtual || variant_iface) {
714 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
716 vtable_slot = orig_vtable_slot;
717 g_assert (vtable_slot);
719 mono_method_add_generic_virtual_invocation (mono_domain_get (),
726 /* the method was jumped to */
728 MonoDomain *domain = mono_domain_get ();
730 /* Patch the got entries pointing to this method */
732 * We do this here instead of in mono_codegen () to cover the case when m
733 * was loaded from an aot image.
735 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
738 mono_domain_lock (domain);
739 list = (GSList *)g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
741 for (tmp = list; tmp; tmp = tmp->next) {
742 gpointer *got_slot = (gpointer *)tmp->data;
745 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
748 mono_domain_unlock (domain);
754 vtable_slot = orig_vtable_slot;
757 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))) {
758 g_assert (*vtable_slot_to_patch);
759 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
762 guint8 *plt_entry = mono_aot_get_plt_entry (code);
763 gboolean no_patch = FALSE;
764 MonoJitInfo *target_ji;
767 if (generic_shared) {
769 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
771 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
773 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
778 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
780 if (generic_shared) {
781 if (m->wrapper_type != MONO_WRAPPER_NONE)
782 m = mono_marshal_method_from_wrapper (m);
783 //g_assert (mono_method_is_generic_sharable (m, FALSE));
786 /* Patch calling code */
788 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
790 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
792 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
794 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
795 * generic sharing fails.
796 * FIXME: Performance problem.
800 #if LLVM_API_VERSION > 100
801 /* LLVM code doesn't make direct calls */
802 if (ji && ji->from_llvm)
805 if (!no_patch && mono_method_same_domain (ji, target_ji))
806 mono_arch_patch_callsite ((guint8 *)ji->code_start, code, (guint8 *)addr);
814 * mono_magic_trampoline:
816 * This trampoline handles normal calls from JITted code.
819 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
823 MONO_ENTER_GC_UNSAFE_UNBALANCED;
829 res = common_call_trampoline (regs, code, (MonoMethod *)arg, NULL, NULL, &error);
830 mono_error_set_pending_exception (&error);
832 mono_interruption_checkpoint_from_trampoline ();
834 MONO_EXIT_GC_UNSAFE_UNBALANCED;
840 * mono_vcall_trampoline:
842 * This trampoline handles virtual calls.
845 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
847 MONO_REQ_GC_UNSAFE_MODE;
849 MonoObject *this_arg;
851 gpointer *vtable_slot;
854 gpointer addr, res = NULL;
859 * We need to obtain the following pieces of information:
860 * - the method which needs to be compiled.
862 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
863 * the other two can be computed from the vtable + the slot index.
867 * Obtain the vtable from the 'this' arg.
869 this_arg = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
872 vt = this_arg->vtable;
875 /* Normal virtual call */
876 vtable_slot = &(vt->vtable [slot]);
878 /* Avoid loading metadata or creating a generic vtable if possible */
879 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot, &error);
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);
912 if (!mono_error_ok (&error)) {
913 mono_error_set_pending_exception (&error);
919 #ifndef DISABLE_REMOTING
921 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
923 MONO_REQ_GC_UNSAFE_MODE;
926 MonoGenericContext context = { NULL, NULL };
927 MonoMethod *imt_method, *declaring;
932 g_assert (m->is_generic);
935 declaring = mono_method_get_declaring_generic_method (m);
939 if (mono_class_is_ginst (m->klass))
940 context.class_inst = mono_class_get_generic_class (m->klass)->context.class_inst;
942 g_assert (!mono_class_is_gtd (m->klass));
944 imt_method = mono_arch_find_imt_method (regs, code);
945 if (imt_method->is_inflated)
946 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
947 m = mono_class_inflate_generic_method_checked (declaring, &context, &error);
948 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */;
949 m = mono_marshal_get_remoting_invoke_with_check (m);
951 addr = mono_jit_compile_method (m, &error);
952 if (!mono_error_ok (&error)) {
953 mono_error_set_pending_exception (&error);
963 * mono_aot_trampoline:
965 * This trampoline handles calls made from AOT code. We try to bypass the
966 * normal JIT compilation logic to avoid loading the metadata for the method.
968 #ifdef MONO_ARCH_AOT_SUPPORTED
970 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
973 MONO_REQ_GC_UNSAFE_MODE;
977 MonoMethod *method = NULL;
984 image = (MonoImage *)*(gpointer*)(gpointer)token_info;
985 token_info += sizeof (gpointer);
986 token = *(guint32*)(gpointer)token_info;
988 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token, &error);
990 mono_error_cleanup (&error);
992 method = mono_get_method_checked (image, token, NULL, NULL, &error);
994 g_error ("Could not load AOT trampoline due to %s", mono_error_get_message (&error));
996 /* Use the generic code */
997 return mono_magic_trampoline (regs, code, method, tramp);
1000 addr = mono_create_ftnptr (mono_domain_get (), addr);
1002 /* This is a normal call through a PLT entry */
1003 plt_entry = mono_aot_get_plt_entry (code);
1004 g_assert (plt_entry);
1006 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
1012 * mono_aot_plt_trampoline:
1014 * This trampoline handles calls made from AOT code through the PLT table.
1017 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
1020 MONO_REQ_GC_UNSAFE_MODE;
1022 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
1026 trampoline_calls ++;
1028 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code, &error);
1030 if (!mono_error_ok (&error)) {
1031 mono_error_set_pending_exception (&error);
1034 // FIXME: Error handling (how ?)
1043 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
1045 MONO_REQ_GC_UNSAFE_MODE;
1047 static gboolean inited = FALSE;
1048 static int num_lookups = 0;
1049 guint32 slot = GPOINTER_TO_UINT (data);
1050 mgreg_t *r = (mgreg_t*)regs;
1051 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
1052 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
1053 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1057 trampoline_calls ++;
1060 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
1067 res = mono_method_fill_runtime_generic_context ((MonoMethodRuntimeGenericContext *)arg, index, &error);
1069 res = mono_class_fill_runtime_generic_context ((MonoVTable *)arg, index, &error);
1070 if (!mono_error_ok (&error)) {
1071 mono_error_set_pending_exception (&error);
1078 * mono_delegate_trampoline:
1080 * This trampoline handles calls made to Delegate:Invoke ().
1081 * This is called once the first time a delegate is invoked, so it must be fast.
1084 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *arg, guint8* tramp)
1086 MONO_REQ_GC_UNSAFE_MODE;
1088 MonoDomain *domain = mono_domain_get ();
1089 MonoDelegate *delegate;
1092 MonoMethod *method = NULL;
1094 gboolean multicast, callvirt = FALSE, closed_over_null = FALSE;
1095 gboolean need_rgctx_tramp = FALSE;
1096 gboolean need_unbox_tramp = FALSE;
1097 gboolean enable_caching = TRUE;
1098 MonoDelegateTrampInfo *tramp_info = (MonoDelegateTrampInfo*)arg;
1099 MonoMethod *invoke = tramp_info->invoke;
1100 guint8 *impl_this = (guint8 *)tramp_info->impl_this;
1101 guint8 *impl_nothis = (guint8 *)tramp_info->impl_nothis;
1103 MonoMethodSignature *sig;
1104 gpointer addr, compiled_method;
1105 gboolean is_remote = FALSE;
1107 trampoline_calls ++;
1109 /* Obtain the delegate object according to the calling convention */
1110 delegate = (MonoDelegate *)mono_arch_get_this_arg_from_call (regs, code);
1111 g_assert (mono_class_has_parent (mono_object_class (delegate), mono_defaults.multicastdelegate_class));
1113 if (delegate->method) {
1114 method = delegate->method;
1117 * delegate->method_ptr == NULL means the delegate was initialized by
1118 * mini_delegate_ctor, while != NULL means it is initialized by
1119 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
1120 * (ctor_with_method () does this, but it doesn't store the wrapper back into
1121 * delegate->method).
1123 #ifndef DISABLE_REMOTING
1124 if (delegate->target && mono_object_is_transparent_proxy (delegate->target)) {
1127 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_class_get_com_object_class () &&
1128 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1130 method = mono_marshal_get_remoting_invoke (method);
1134 sig = tramp_info->sig;
1135 if (!(sig && method == tramp_info->method)) {
1137 sig = mono_method_signature_checked (method, &err);
1139 mono_error_set_pending_exception (&err);
1144 if (sig->hasthis && method->klass->valuetype) {
1145 gboolean need_unbox = TRUE;
1147 if (tramp_info->invoke_sig->param_count > sig->param_count && tramp_info->invoke_sig->params [0]->byref)
1152 need_unbox_tramp = TRUE;
1154 method = mono_marshal_get_unbox_wrapper (method);
1158 // If "delegate->method_ptr" is null mono_get_addr_from_ftnptr will fail if
1159 // ftnptrs are being used. "method" would end up null on archtitectures without
1160 // ftnptrs so we can just skip this.
1161 } else if (delegate->method_ptr) {
1162 ji = mono_jit_info_table_find (domain, (char *)mono_get_addr_from_ftnptr (delegate->method_ptr));
1164 method = jinfo_get_method (ji);
1168 sig = tramp_info->sig;
1169 if (!(sig && method == tramp_info->method)) {
1171 sig = mono_method_signature_checked (method, &err);
1173 mono_error_set_pending_exception (&err);
1178 callvirt = !delegate->target && sig->hasthis;
1180 closed_over_null = tramp_info->invoke_sig->param_count == sig->param_count;
1182 if (callvirt && !closed_over_null) {
1184 * The delegate needs to make a virtual call to the target method using its
1185 * first argument as the receiver. This is hard to support in full-aot, so
1186 * optimize it in some cases if possible.
1187 * If the target method is not virtual or is in a sealed class,
1188 * the vcall will call it directly.
1189 * If the call doesn't return a valuetype, then the vcall uses the same calling
1190 * convention as a normal call.
1192 if ((mono_class_is_sealed (method->klass) || !(method->flags & METHOD_ATTRIBUTE_VIRTUAL)) && !MONO_TYPE_ISSTRUCT (sig->ret)) {
1194 enable_caching = FALSE;
1198 if (delegate->target &&
1199 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1200 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1201 mono_class_is_abstract (method->klass)) {
1202 method = mono_object_get_virtual_method (delegate->target, method);
1203 enable_caching = FALSE;
1206 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1207 method = mono_marshal_get_synchronized_wrapper (method);
1209 if (method == tramp_info->method)
1210 need_rgctx_tramp = tramp_info->need_rgctx_tramp;
1211 else if (mono_method_needs_static_rgctx_invoke (method, FALSE))
1212 need_rgctx_tramp = TRUE;
1216 * If the called address is a trampoline, replace it with the compiled method so
1217 * further calls don't have to go through the trampoline.
1219 if (method && !callvirt) {
1220 /* Avoid the overhead of looking up an already compiled method if possible */
1221 if (enable_caching && delegate->method_code && *delegate->method_code) {
1222 delegate->method_ptr = *delegate->method_code;
1224 compiled_method = addr = mono_jit_compile_method (method, &error);
1225 if (!mono_error_ok (&error)) {
1226 mono_error_set_pending_exception (&error);
1229 addr = mini_add_method_trampoline (method, compiled_method, need_rgctx_tramp, need_unbox_tramp);
1230 delegate->method_ptr = addr;
1231 if (enable_caching && delegate->method_code)
1232 *delegate->method_code = (guint8 *)delegate->method_ptr;
1235 if (need_rgctx_tramp)
1236 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1239 /* Necessary for !code condition to fallback to slow path */
1242 multicast = ((MonoMulticastDelegate*)delegate)->delegates != NULL;
1243 if (!multicast && !callvirt) {
1244 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1245 /* Closed static delegate */
1248 code = delegate->target ? impl_this : impl_nothis;
1252 /* The general, unoptimized case */
1253 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1254 code = (guint8 *)mono_jit_compile_method (m, &error);
1255 if (!mono_error_ok (&error)) {
1256 mono_error_set_pending_exception (&error);
1259 code = (guint8 *)mini_add_method_trampoline (m, code, mono_method_needs_static_rgctx_invoke (m, FALSE), FALSE);
1262 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1263 if (enable_caching && !callvirt && tramp_info->method) {
1264 tramp_info->method_ptr = delegate->method_ptr;
1265 tramp_info->invoke_impl = delegate->invoke_impl;
1271 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1273 mono_handler_block_guard_trampoline (mgreg_t *regs, guint8 *code, gpointer *tramp_info, guint8* tramp)
1275 MONO_REQ_GC_UNSAFE_MODE;
1279 MonoJitTlsData *jit_tls = (MonoJitTlsData *)mono_tls_get_jit_tls ();
1280 gpointer resume_ip = jit_tls->handler_block_return_address;
1282 memcpy (&ctx, &jit_tls->handler_block_context, sizeof (MonoContext));
1283 MONO_CONTEXT_SET_IP (&ctx, jit_tls->handler_block_return_address);
1285 jit_tls->handler_block_return_address = NULL;
1286 jit_tls->handler_block = NULL;
1288 if (!resume_ip) /*this should not happen, but we should avoid crashing */
1289 exc = mono_get_exception_execution_engine ("Invalid internal state, resuming abort after handler block but no resume ip found");
1291 exc = mono_thread_resume_interruption ();
1294 mono_handle_exception (&ctx, (MonoObject *)exc);
1295 mono_restore_context (&ctx);
1302 mono_create_handler_block_trampoline (void)
1304 static gpointer code;
1309 if (mono_aot_only) {
1310 gpointer tmp = mono_aot_get_trampoline ("handler_block_trampoline");
1312 mono_memory_barrier ();
1317 mono_trampolines_lock ();
1319 MonoTrampInfo *info;
1322 tmp = mono_arch_create_handler_block_trampoline (&info, FALSE);
1323 mono_tramp_info_register (info, NULL);
1324 mono_memory_barrier ();
1327 mono_trampolines_unlock ();
1334 * mono_get_trampoline_func:
1336 * Return the C function which needs to be called by the generic trampoline of type
1340 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1342 switch (tramp_type) {
1343 case MONO_TRAMPOLINE_JIT:
1344 case MONO_TRAMPOLINE_JUMP:
1345 return mono_magic_trampoline;
1346 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1347 return mono_rgctx_lazy_fetch_trampoline;
1348 #ifdef MONO_ARCH_AOT_SUPPORTED
1349 case MONO_TRAMPOLINE_AOT:
1350 return mono_aot_trampoline;
1351 case MONO_TRAMPOLINE_AOT_PLT:
1352 return mono_aot_plt_trampoline;
1354 case MONO_TRAMPOLINE_DELEGATE:
1355 return mono_delegate_trampoline;
1356 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1357 return mono_altstack_restore_prot;
1358 #ifndef DISABLE_REMOTING
1359 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1360 return mono_generic_virtual_remoting_trampoline;
1362 case MONO_TRAMPOLINE_VCALL:
1363 return mono_vcall_trampoline;
1364 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1365 case MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD:
1366 return mono_handler_block_guard_trampoline;
1369 g_assert_not_reached ();
1375 create_trampoline_code (MonoTrampolineType tramp_type)
1377 MonoTrampInfo *info;
1380 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1381 mono_tramp_info_register (info, NULL);
1387 mono_trampolines_init (void)
1389 mono_os_mutex_init_recursive (&trampolines_mutex);
1394 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1395 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1396 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1397 #ifdef MONO_ARCH_AOT_SUPPORTED
1398 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1399 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1401 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1402 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1403 #ifndef DISABLE_REMOTING
1404 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1406 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1407 #ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
1408 mono_trampoline_code [MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD] = create_trampoline_code (MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD);
1409 mono_create_handler_block_trampoline ();
1412 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1413 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1414 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1415 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1419 mono_trampolines_cleanup (void)
1421 if (rgctx_lazy_fetch_trampoline_hash)
1422 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1423 if (rgctx_lazy_fetch_trampoline_hash_addr)
1424 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1426 mono_os_mutex_destroy (&trampolines_mutex);
1430 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1432 g_assert (mono_trampoline_code [tramp_type]);
1434 return mono_trampoline_code [tramp_type];
1438 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1444 code = mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, &len);
1446 code = mono_arch_create_specific_trampoline (arg1, tramp_type, domain, &len);
1447 mono_lldb_save_specific_trampoline_info (arg1, tramp_type, domain, code, len);
1454 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper, MonoError *error)
1458 guint32 code_size = 0;
1462 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1464 * We cannot recover the correct type of a shared generic
1465 * method from its native code address, so we use the
1466 * trampoline instead.
1467 * For synchronized methods, the trampoline adds the wrapper.
1469 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1472 if (mono_llvm_only) {
1473 code = mono_jit_compile_method (method, error);
1474 if (!mono_error_ok (error))
1479 mono_domain_lock (domain);
1480 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1481 mono_domain_unlock (domain);
1485 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1486 g_assert (code_size);
1488 ji = (MonoJitInfo *)mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1489 ji->code_start = code;
1490 ji->code_size = code_size;
1491 ji->d.method = method;
1494 * mono_delegate_ctor needs to find the method metadata from the
1495 * trampoline address, so we save it here.
1498 mono_jit_info_table_add (domain, ji);
1500 mono_domain_lock (domain);
1501 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1502 mono_domain_unlock (domain);
1504 return ji->code_start;
1508 method_not_found (void)
1510 g_assert_not_reached ();
1514 mono_create_jit_trampoline (MonoDomain *domain, MonoMethod *method, MonoError *error)
1520 if (mono_aot_only) {
1521 if (mono_llvm_only && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1522 method = mono_marshal_get_synchronized_wrapper (method);
1524 /* Avoid creating trampolines if possible */
1525 gpointer code = mono_jit_find_compiled_method (domain, method);
1529 if (mono_llvm_only) {
1530 if (method->wrapper_type == MONO_WRAPPER_PROXY_ISINST)
1531 /* These wrappers are not generated */
1532 return method_not_found;
1533 /* Methods are lazily initialized on first call, so this can't lead recursion */
1534 code = mono_jit_compile_method (method, error);
1535 if (!mono_error_ok (error))
1541 mono_domain_lock (domain);
1542 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1543 mono_domain_unlock (domain);
1547 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1549 mono_domain_lock (domain);
1550 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1551 mono_domain_unlock (domain);
1559 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
1563 MonoDomain *domain = mono_domain_get ();
1564 guint8 *buf, *start;
1566 buf = start = (guint8 *)mono_domain_alloc0 (domain, 2 * sizeof (gpointer));
1568 *(gpointer*)(gpointer)buf = image;
1569 buf += sizeof (gpointer);
1570 *(guint32*)(gpointer)buf = token;
1572 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
1581 * mono_create_delegate_trampoline_info:
1583 * Create a trampoline info structure for the KLASS+METHOD pair.
1585 MonoDelegateTrampInfo*
1586 mono_create_delegate_trampoline_info (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1590 MonoDelegateTrampInfo *tramp_info;
1591 MonoClassMethodPair pair, *dpair;
1592 guint32 code_size = 0;
1595 pair.method = method;
1596 mono_domain_lock (domain);
1597 tramp_info = (MonoDelegateTrampInfo *)g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, &pair);
1598 mono_domain_unlock (domain);
1602 invoke = mono_get_delegate_invoke (klass);
1605 tramp_info = (MonoDelegateTrampInfo *)mono_domain_alloc0 (domain, sizeof (MonoDelegateTrampInfo));
1606 tramp_info->invoke = invoke;
1607 tramp_info->invoke_sig = mono_method_signature (invoke);
1608 tramp_info->impl_this = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1609 tramp_info->impl_nothis = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1610 tramp_info->method = method;
1612 error_init (&error);
1613 tramp_info->sig = mono_method_signature_checked (method, &error);
1614 tramp_info->need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (method, FALSE);
1616 tramp_info->invoke_impl = mono_create_specific_trampoline (tramp_info, MONO_TRAMPOLINE_DELEGATE, domain, &code_size);
1617 g_assert (code_size);
1619 dpair = (MonoClassMethodPair *)mono_domain_alloc0 (domain, sizeof (MonoClassMethodPair));
1620 memcpy (dpair, &pair, sizeof (MonoClassMethodPair));
1622 /* store trampoline address */
1623 mono_domain_lock (domain);
1624 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash, dpair, tramp_info);
1625 mono_domain_unlock (domain);
1631 no_delegate_trampoline (void)
1633 g_assert_not_reached ();
1637 mono_create_delegate_trampoline (MonoDomain *domain, MonoClass *klass)
1639 if (mono_llvm_only || mono_use_interpreter)
1640 return no_delegate_trampoline;
1642 return mono_create_delegate_trampoline_info (domain, klass, NULL)->invoke_impl;
1646 mono_create_delegate_virtual_trampoline (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1648 MonoMethod *invoke = mono_get_delegate_invoke (klass);
1651 return mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), method);
1655 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1657 static gboolean inited = FALSE;
1658 static int num_trampolines = 0;
1659 MonoTrampInfo *info;
1661 gpointer tramp, ptr;
1663 mono_trampolines_lock ();
1664 if (rgctx_lazy_fetch_trampoline_hash)
1665 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1668 mono_trampolines_unlock ();
1672 if (mono_aot_only) {
1673 ptr = mono_aot_get_lazy_fetch_trampoline (offset);
1675 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1676 mono_tramp_info_register (info, NULL);
1677 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1680 mono_trampolines_lock ();
1681 if (!rgctx_lazy_fetch_trampoline_hash) {
1682 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1683 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1685 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1686 g_assert (offset != -1);
1687 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1688 mono_trampolines_unlock ();
1691 mono_counters_register ("RGCTX num lazy fetch trampolines",
1692 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1701 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1705 mono_trampolines_lock ();
1706 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1707 /* We store the real offset + 1 so we can detect when the lookup fails */
1708 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1716 mono_trampolines_unlock ();
1720 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1727 "restore_stack_prot",
1728 "generic_virtual_remoting",
1730 "handler_block_guard"
1734 * mono_get_generic_trampoline_simple_name:
1738 mono_get_generic_trampoline_simple_name (MonoTrampolineType tramp_type)
1740 return tramp_names [tramp_type];
1744 * mono_get_generic_trampoline_name:
1746 * Returns a pointer to malloc-ed memory.
1749 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1751 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1755 * mono_get_rgctx_fetch_trampoline_name:
1757 * Returns a pointer to malloc-ed memory.
1760 mono_get_rgctx_fetch_trampoline_name (int slot)
1765 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1766 index = MONO_RGCTX_SLOT_INDEX (slot);
1768 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);
1772 * mini_get_single_step_trampoline:
1774 * Return a trampoline which calls debugger_agent_single_step_from_context ().
1777 mini_get_single_step_trampoline (void)
1779 static gpointer trampoline;
1784 if (mono_aot_only) {
1785 tramp = mono_aot_get_trampoline ("sdb_single_step_trampoline");
1787 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1788 MonoTrampInfo *info;
1789 tramp = mono_arch_create_sdb_trampoline (TRUE, &info, FALSE);
1790 mono_tramp_info_register (info, NULL);
1793 g_assert_not_reached ();
1796 mono_memory_barrier ();
1804 * mini_get_breakpoint_trampoline:
1806 * Return a trampoline which calls debugger_agent_breakpoint_from_context ().
1809 mini_get_breakpoint_trampoline (void)
1811 static gpointer trampoline;
1816 if (mono_aot_only) {
1817 tramp = mono_aot_get_trampoline ("sdb_breakpoint_trampoline");
1819 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1820 MonoTrampInfo *info;
1821 tramp = mono_arch_create_sdb_trampoline (FALSE, &info, FALSE);
1822 mono_tramp_info_register (info, NULL);
1825 g_assert_not_reached ();
1828 mono_memory_barrier ();