3 * (C) 2003 Ximian, Inc.
4 * (C) 2003-2011 Novell, Inc.
5 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
6 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
11 #include <mono/metadata/appdomain.h>
12 #include <mono/metadata/metadata-internals.h>
13 #include <mono/metadata/marshal.h>
14 #include <mono/metadata/tabledefs.h>
15 #include <mono/utils/mono-counters.h>
16 #include <mono/utils/mono-error-internals.h>
17 #include <mono/utils/mono-membar.h>
18 #include <mono/utils/mono-compiler.h>
19 #include <mono/utils/mono-threads-coop.h>
20 #include <mono/utils/unlocked.h>
25 #ifdef ENABLE_INTERPRETER
26 #include "interp/interp.h"
30 * Address of the trampoline code. This is used by the debugger to check
31 * whether a method is a trampoline.
33 guint8* mono_trampoline_code [MONO_TRAMPOLINE_NUM];
35 static GHashTable *rgctx_lazy_fetch_trampoline_hash;
36 static GHashTable *rgctx_lazy_fetch_trampoline_hash_addr;
38 static gint32 trampoline_calls;
39 static gint32 jit_trampolines;
40 static gint32 unbox_trampolines;
41 static gint32 static_rgctx_trampolines;
42 static gint32 rgctx_unmanaged_lookups;
43 static gint32 rgctx_num_lazy_fetch_trampolines;
45 #define mono_trampolines_lock() mono_os_mutex_lock (&trampolines_mutex)
46 #define mono_trampolines_unlock() mono_os_mutex_unlock (&trampolines_mutex)
47 static mono_mutex_t trampolines_mutex;
49 #ifdef MONO_ARCH_GSHARED_SUPPORTED
57 rgctx_tramp_info_equal (gconstpointer ka, gconstpointer kb)
59 const RgctxTrampInfo *i1 = (const RgctxTrampInfo *)ka;
60 const RgctxTrampInfo *i2 = (const RgctxTrampInfo *)kb;
62 if (i1->m == i2->m && i1->addr == i2->addr)
69 rgctx_tramp_info_hash (gconstpointer data)
71 const RgctxTrampInfo *info = (const RgctxTrampInfo *)data;
73 return GPOINTER_TO_UINT (info->m) ^ GPOINTER_TO_UINT (info->addr);
77 * mono_create_static_rgctx_trampoline:
78 * \param m the mono method to create a trampoline for
79 * \param addr the address to jump to (where the compiled code for M lives)
81 * Creates a static rgctx trampoline for M which branches to ADDR which should
82 * point to the compiled code of M.
84 * Static rgctx trampolines are used when a shared generic method which doesn't
85 * have a this argument is called indirectly, ie. from code which can't pass in
86 * the rgctx argument. The trampoline sets the rgctx argument and jumps to the
87 * methods code. These trampolines are similar to the unbox trampolines, they
88 * perform the same task as the static rgctx wrappers, but they are smaller/faster,
89 * and can be made to work with full AOT.
91 * On PPC addr should be an ftnptr and the return value is an ftnptr too.
93 * \returns the generated static rgctx trampoline.
96 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
101 RgctxTrampInfo tmp_info;
102 RgctxTrampInfo *info;
104 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
105 g_assert (((gpointer*)addr) [2] == 0);
108 ctx = mini_method_get_rgctx (m);
110 domain = mono_domain_get ();
113 * In the AOT case, addr might point to either the method, or to an unbox trampoline,
114 * so make the hash keyed on the m+addr pair.
116 mono_domain_lock (domain);
117 if (!domain_jit_info (domain)->static_rgctx_trampoline_hash)
118 domain_jit_info (domain)->static_rgctx_trampoline_hash = g_hash_table_new (rgctx_tramp_info_hash, rgctx_tramp_info_equal);
120 tmp_info.addr = addr;
121 res = g_hash_table_lookup (domain_jit_info (domain)->static_rgctx_trampoline_hash,
123 mono_domain_unlock (domain);
128 res = mono_aot_get_static_rgctx_trampoline (ctx, addr);
130 res = mono_arch_get_static_rgctx_trampoline (ctx, addr);
132 mono_domain_lock (domain);
133 /* Duplicates inserted while we didn't hold the lock are OK */
134 info = (RgctxTrampInfo *)mono_domain_alloc (domain, sizeof (RgctxTrampInfo));
137 g_hash_table_insert (domain_jit_info (domain)->static_rgctx_trampoline_hash, info, res);
139 UnlockedIncrement (&static_rgctx_trampolines);
140 mono_domain_unlock (domain);
146 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
149 * This shouldn't happen as all arches which support generic sharing support
150 * static rgctx trampolines as well.
152 g_assert_not_reached ();
157 #define DEBUG_IMT(stmt) do { stmt; } while (0)
159 #define DEBUG_IMT(stmt) do { } while (0)
163 * mini_resolve_imt_method:
165 * Resolve the actual method called when making an IMT call through VTABLE_SLOT with IMT_METHOD as the interface method.
167 * Either IMPL_METHOD or OUT_AOT_ADDR will be set on return.
170 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)
172 MonoMethod *impl = NULL, *generic_virtual = NULL;
173 gboolean lookup_aot, variance_used = FALSE, need_rgctx_tramp = FALSE;
175 guint8 *aot_addr = NULL;
176 int displacement = vtable_slot - ((gpointer*)vt);
177 int interface_offset;
178 int imt_slot = MONO_IMT_SIZE + displacement;
180 g_assert (imt_slot < MONO_IMT_SIZE);
183 /* This has to be variance aware since imt_method can be from an interface that vt->klass doesn't directly implement */
184 interface_offset = mono_class_interface_offset_with_variance (vt->klass, imt_method->klass, &variance_used);
185 if (interface_offset < 0)
186 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));
188 *variant_iface = NULL;
189 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
190 /* Generic virtual method */
191 generic_virtual = imt_method;
192 need_rgctx_tramp = TRUE;
193 } else if (variance_used && mono_class_has_variant_generic_params (imt_method->klass)) {
194 *variant_iface = imt_method;
198 /* We can only use the AOT compiled code if we don't require further processing */
199 lookup_aot = !generic_virtual & !variant_iface;
202 mono_vtable_build_imt_slot (vt, mono_method_get_imt_slot (imt_method));
204 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
205 MonoGenericContext context = { NULL, NULL };
208 * Generic virtual method, imt_method contains the inflated interface
209 * method, need to get the inflated impl method.
211 /* imt_method->slot might not be set */
212 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_declaring_generic_method (imt_method)->slot);
214 if (mono_class_is_ginst (impl->klass))
215 context.class_inst = mono_class_get_generic_class (impl->klass)->context.class_inst;
216 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
217 impl = mono_class_inflate_generic_method_checked (impl, &context, error);
218 mono_error_assert_ok (error);
221 /* Avoid loading metadata or creating a generic vtable if possible */
222 if (lookup_aot && !vt->klass->valuetype) {
223 aot_addr = (guint8 *)mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, interface_offset + mono_method_get_vtable_slot (imt_method), error);
224 return_val_if_nok (error, NULL);
231 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_vtable_slot (imt_method));
234 if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
235 need_rgctx_tramp = TRUE;
236 if (impl && impl->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
237 WrapperInfo *info = mono_marshal_get_wrapper_info (impl);
239 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER)
240 need_rgctx_tramp = TRUE;
243 *out_need_rgctx_tramp = need_rgctx_tramp;
244 *out_aot_addr = aot_addr;
246 DEBUG_IMT (printf ("mono_convert_imt_slot_to_vtable_slot: method = %s.%s.%s, imt_method = %s.%s.%s\n",
247 method->klass->name_space, method->klass->name, method->name,
248 imt_method->klass->name_space, imt_method->klass->name, imt_method->name));
250 if (vt->imt_collisions_bitmap & (1 << imt_slot)) {
251 int slot = mono_method_get_vtable_index (imt_method);
254 g_assert (slot != -1);
255 vtable_offset = interface_offset + slot;
256 vtable_slot = & (vt->vtable [vtable_offset]);
257 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));
260 DEBUG_IMT (printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, but not colliding\n", slot, imt_slot));
266 * This is a super-ugly hack to fix bug #616463.
268 * The problem is that we don't always set is_generic for generic
269 * method definitions. See the comment at the end of
270 * mono_class_inflate_generic_method_full_checked() in class.c.
273 is_generic_method_definition (MonoMethod *m)
275 MonoGenericContext *context;
281 context = mono_method_get_context (m);
282 if (!context->method_inst)
284 if (context->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)m)->declaring)->context.method_inst)
290 mini_jit_info_is_gsharedvt (MonoJitInfo *ji)
292 if (ji && ji->has_generic_jit_info && (mono_jit_info_get_generic_sharing_context (ji)->is_gsharedvt))
299 * mini_add_method_trampoline:
302 * @add_static_rgctx_tramp: adds a static rgctx trampoline
303 * @add_unbox_tramp: adds an unboxing trampoline
305 * Add static rgctx/gsharedvt_in/unbox trampolines to
306 * M/COMPILED_METHOD if needed.
308 * Returns the trampoline address, or COMPILED_METHOD if no trampoline
312 mini_add_method_trampoline (MonoMethod *m, gpointer compiled_method, gboolean add_static_rgctx_tramp, gboolean add_unbox_tramp)
314 gpointer addr = compiled_method;
315 gboolean callee_gsharedvt, callee_array_helper;
316 MonoMethod *jmethod = NULL;
319 // FIXME: This loads information from AOT (perf problem)
320 ji = mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
321 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
323 callee_array_helper = FALSE;
324 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
325 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
328 * generic array helpers.
329 * Have to replace the wrappers with the original generic instances.
331 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
332 callee_array_helper = TRUE;
333 m = info->d.generic_array_helper.method;
335 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
336 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
338 /* Same for synchronized inner wrappers */
339 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
340 m = info->d.synchronized_inner.method;
344 if (callee_gsharedvt)
345 g_assert (m->is_inflated);
347 addr = compiled_method;
349 if (add_unbox_tramp) {
351 * The unbox trampolines call the method directly, so need to add
352 * an rgctx tramp before them.
355 addr = mono_aot_get_unbox_trampoline (m);
357 unbox_trampolines ++;
358 addr = mono_arch_get_unbox_trampoline (m, addr);
362 if (ji && !ji->is_trampoline)
363 jmethod = jinfo_get_method (ji);
364 if (callee_gsharedvt && mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod))) {
365 MonoMethodSignature *sig, *gsig;
367 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
369 /* Call from normal/gshared code to gsharedvt code with variable signature */
370 sig = mono_method_signature (m);
371 gsig = mono_method_signature (jmethod);
373 addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, -1, FALSE);
376 g_assert_not_reached ();
377 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
380 if (callee_array_helper) {
381 add_static_rgctx_tramp = FALSE;
382 /* In AOT mode, compiled_method points to one of the InternalArray methods in Array. */
383 if (ji && !mono_llvm_only && mono_method_needs_static_rgctx_invoke (jinfo_get_method (ji), TRUE))
384 add_static_rgctx_tramp = TRUE;
388 add_static_rgctx_tramp = FALSE;
390 if (add_static_rgctx_tramp)
391 addr = mono_create_static_rgctx_trampoline (m, addr);
397 * mini_create_llvmonly_ftndesc:
399 * Create a function descriptor of the form <addr, arg>, which
400 * represents a callee ADDR with ARG as the last argument.
402 * - generic sharing (ARG is the rgctx)
403 * - gsharedvt signature wrappers (ARG is a function descriptor)
406 mini_create_llvmonly_ftndesc (MonoDomain *domain, gpointer addr, gpointer arg)
408 MonoFtnDesc *ftndesc = (MonoFtnDesc*)mono_domain_alloc0 (mono_domain_get (), 2 * sizeof (gpointer));
409 ftndesc->addr = addr;
416 * mini_add_method_wrappers_llvmonly:
418 * Add unbox/gsharedvt wrappers around COMPILED_METHOD if needed. Return the wrapper address or COMPILED_METHOD
419 * if no wrapper is needed. Set OUT_ARG to the rgctx/extra argument needed to be passed to the returned method.
422 mini_add_method_wrappers_llvmonly (MonoMethod *m, gpointer compiled_method, gboolean caller_gsharedvt, gboolean add_unbox_tramp, gpointer *out_arg)
425 gboolean callee_gsharedvt, callee_array_helper;
426 MonoMethod *jmethod = NULL;
429 // FIXME: This loads information from AOT (perf problem)
430 ji = mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
431 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
433 callee_array_helper = FALSE;
434 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
435 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
438 * generic array helpers.
439 * Have to replace the wrappers with the original generic instances.
441 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
442 callee_array_helper = TRUE;
443 m = info->d.generic_array_helper.method;
445 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
446 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
448 /* Same for synchronized inner wrappers */
449 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
450 m = info->d.synchronized_inner.method;
454 if (callee_gsharedvt)
455 g_assert (m->is_inflated);
457 addr = compiled_method;
459 if (add_unbox_tramp) {
461 * The unbox trampolines call the method directly, so need to add
462 * an rgctx tramp before them.
465 addr = mono_aot_get_unbox_trampoline (m);
467 unbox_trampolines ++;
468 addr = mono_arch_get_unbox_trampoline (m, addr);
472 g_assert (mono_llvm_only);
475 if (ji && !ji->is_trampoline)
476 jmethod = jinfo_get_method (ji);
478 if (callee_gsharedvt)
479 callee_gsharedvt = mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod));
481 if (!caller_gsharedvt && callee_gsharedvt) {
482 MonoMethodSignature *sig, *gsig;
483 gpointer wrapper_addr;
485 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
487 /* Call from normal/gshared code to gsharedvt code with variable signature */
488 sig = mono_method_signature (m);
489 gsig = mono_method_signature (jmethod);
491 wrapper_addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, -1, FALSE);
494 * This is a gsharedvt in wrapper, it gets passed a ftndesc for the gsharedvt method as an argument.
496 *out_arg = mini_create_llvmonly_ftndesc (mono_domain_get (), addr, mini_method_get_rgctx (m));
498 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
501 if (!(*out_arg) && mono_method_needs_static_rgctx_invoke (m, FALSE))
502 *out_arg = mini_method_get_rgctx (m);
504 if (caller_gsharedvt && !callee_gsharedvt) {
506 * The callee uses the gsharedvt calling convention, have to add an out wrapper.
508 gpointer out_wrapper = mini_get_gsharedvt_wrapper (FALSE, NULL, mono_method_signature (m), NULL, -1, FALSE);
509 MonoFtnDesc *out_wrapper_arg = mini_create_llvmonly_ftndesc (mono_domain_get (), addr, *out_arg);
512 *out_arg = out_wrapper_arg;
519 * common_call_trampoline:
521 * The code to handle normal, virtual, and interface method calls and jumps, both
522 * from JITted and LLVM compiled code.
525 common_call_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, MonoVTable *vt, gpointer *vtable_slot, MonoError *error)
527 gpointer addr, compiled_method;
528 gboolean generic_shared = FALSE;
529 gboolean need_unbox_tramp = FALSE;
530 gboolean need_rgctx_tramp = FALSE;
531 MonoMethod *declaring = NULL;
532 MonoMethod *generic_virtual = NULL, *variant_iface = NULL;
534 gboolean imt_call, virtual_;
535 gpointer *orig_vtable_slot, *vtable_slot_to_patch = NULL;
536 MonoJitInfo *ji = NULL;
540 virtual_ = vt && (gpointer)vtable_slot > (gpointer)vt;
541 imt_call = vt && (gpointer)vtable_slot < (gpointer)vt;
544 * rgctx trampolines are needed when the call is indirect so the caller can't pass
545 * the rgctx argument needed by the callee.
548 need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (m, FALSE);
550 orig_vtable_slot = vtable_slot;
551 vtable_slot_to_patch = vtable_slot;
555 MonoMethod *imt_method = NULL, *impl_method = NULL;
556 MonoObject *this_arg;
558 g_assert (vtable_slot);
560 imt_method = mono_arch_find_imt_method (regs, code);
561 this_arg = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
563 if (mono_object_is_transparent_proxy (this_arg)) {
564 /* Use the slow path for now */
565 m = mono_object_get_virtual_method (this_arg, imt_method);
566 vtable_slot_to_patch = NULL;
568 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
569 /* Generic virtual method */
570 generic_virtual = imt_method;
571 need_rgctx_tramp = TRUE;
574 vtable_slot = mini_resolve_imt_method (vt, vtable_slot, imt_method, &impl_method, &addr, &need_rgctx_tramp, &variant_iface, error);
575 return_val_if_nok (error, NULL);
577 /* We must handle magic interfaces on rank 1 arrays of ref types as if they were variant */
578 if (!variant_iface && vt->klass->rank == 1 && !vt->klass->element_class->valuetype && imt_method->klass->is_array_special_interface)
579 variant_iface = imt_method;
581 /* This is the vcall slot which gets called through the IMT trampoline */
582 vtable_slot_to_patch = vtable_slot;
586 * We found AOT compiled code for the method, skip the rest.
588 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
591 return mono_create_ftnptr (mono_domain_get (), addr);
599 * The virtual check is needed because is_generic_method_definition (m) could
600 * return TRUE for methods used in IMT calls too.
602 if (virtual_ && is_generic_method_definition (m)) {
603 MonoGenericContext context = { NULL, NULL };
604 MonoMethod *declaring;
607 declaring = mono_method_get_declaring_generic_method (m);
611 if (mono_class_is_ginst (m->klass))
612 context.class_inst = mono_class_get_generic_class (m->klass)->context.class_inst;
614 g_assert (!mono_class_is_gtd (m->klass));
616 generic_virtual = mono_arch_find_imt_method (regs, code);
617 g_assert (generic_virtual);
618 g_assert (generic_virtual->is_inflated);
619 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
621 m = mono_class_inflate_generic_method_checked (declaring, &context, error);
622 mono_error_assert_ok (error);
623 /* FIXME: only do this if the method is sharable */
624 need_rgctx_tramp = TRUE;
625 } else if ((context_used = mono_method_check_context_used (m))) {
626 MonoClass *klass = NULL;
627 MonoMethod *actual_method = NULL;
628 MonoVTable *vt = NULL;
629 MonoGenericInst *method_inst = NULL;
632 generic_shared = TRUE;
637 * The caller is gshared code, compute the actual method to call from M and this/rgctx.
639 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
640 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
642 klass = mrgctx->class_vtable->klass;
643 method_inst = mrgctx->method_inst;
644 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
645 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
647 klass = vtable->klass;
649 MonoObject *this_argument = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
651 vt = this_argument->vtable;
652 vtable_slot = orig_vtable_slot;
654 g_assert (this_argument->vtable->klass->inited);
657 mono_class_setup_supertypes (this_argument->vtable->klass);
658 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
662 g_assert (vtable_slot || klass);
665 int displacement = vtable_slot - ((gpointer*)vt);
667 g_assert_not_reached ();
669 g_assert (displacement > 0);
671 actual_method = vt->klass->vtable [displacement];
674 if (method_inst || m->wrapper_type) {
675 MonoGenericContext context = { NULL, NULL };
678 declaring = mono_method_get_declaring_generic_method (m);
682 if (mono_class_is_ginst (klass))
683 context.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
684 else if (mono_class_is_gtd (klass))
685 context.class_inst = mono_class_get_generic_container (klass)->context.class_inst;
686 context.method_inst = method_inst;
688 actual_method = mono_class_inflate_generic_method_checked (declaring, &context, error);
689 mono_error_assert_ok (error);
691 actual_method = mono_class_get_method_generic (klass, m);
695 g_assert (actual_method);
696 g_assert (actual_method->klass == klass);
698 if (actual_method->is_inflated)
699 declaring = mono_method_get_declaring_generic_method (actual_method);
706 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
707 m = mono_marshal_get_synchronized_wrapper (m);
708 need_rgctx_tramp = FALSE;
711 /* Calls made through delegates on platforms without delegate trampolines */
712 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
713 need_rgctx_tramp = TRUE;
715 addr = compiled_method = mono_jit_compile_method (m, error);
719 if (generic_virtual || variant_iface) {
720 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
721 need_unbox_tramp = TRUE;
722 } else if (orig_vtable_slot) {
723 if (m->klass->valuetype)
724 need_unbox_tramp = TRUE;
727 addr = mini_add_method_trampoline (m, compiled_method, need_rgctx_tramp, need_unbox_tramp);
729 if (generic_virtual || variant_iface) {
730 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
732 vtable_slot = orig_vtable_slot;
733 g_assert (vtable_slot);
735 mono_method_add_generic_virtual_invocation (mono_domain_get (),
742 /* the method was jumped to */
744 MonoDomain *domain = mono_domain_get ();
746 /* Patch the got entries pointing to this method */
748 * We do this here instead of in mono_codegen () to cover the case when m
749 * was loaded from an aot image.
751 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
754 mono_domain_lock (domain);
755 list = (GSList *)g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
757 for (tmp = list; tmp; tmp = tmp->next) {
758 gpointer *got_slot = (gpointer *)tmp->data;
761 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
764 mono_domain_unlock (domain);
770 vtable_slot = orig_vtable_slot;
773 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))) {
774 g_assert (*vtable_slot_to_patch);
775 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
778 guint8 *plt_entry = mono_aot_get_plt_entry (code);
779 gboolean no_patch = FALSE;
780 MonoJitInfo *target_ji;
783 if (generic_shared) {
785 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
787 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
789 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
794 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
796 if (generic_shared) {
797 if (m->wrapper_type != MONO_WRAPPER_NONE)
798 m = mono_marshal_method_from_wrapper (m);
799 //g_assert (mono_method_is_generic_sharable (m, FALSE));
802 /* Patch calling code */
804 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
806 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
808 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
810 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
811 * generic sharing fails.
812 * FIXME: Performance problem.
816 #if LLVM_API_VERSION > 100
817 /* LLVM code doesn't make direct calls */
818 if (ji && ji->from_llvm)
821 if (!no_patch && mono_method_same_domain (ji, target_ji))
822 mono_arch_patch_callsite ((guint8 *)ji->code_start, code, (guint8 *)addr);
830 * mono_magic_trampoline:
832 * This trampoline handles normal calls from JITted code.
835 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
840 MONO_REQ_GC_UNSAFE_MODE;
842 g_assert (mono_thread_is_gc_unsafe_mode ());
844 UnlockedIncrement (&trampoline_calls);
846 res = common_call_trampoline (regs, code, (MonoMethod *)arg, NULL, NULL, &error);
847 if (!is_ok (&error)) {
848 mono_error_set_pending_exception (&error);
856 * mono_vcall_trampoline:
858 * This trampoline handles virtual calls.
861 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
863 MONO_REQ_GC_UNSAFE_MODE;
865 MonoObject *this_arg;
867 gpointer *vtable_slot;
870 gpointer addr, res = NULL;
872 UnlockedIncrement (&trampoline_calls);
875 * We need to obtain the following pieces of information:
876 * - the method which needs to be compiled.
878 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
879 * the other two can be computed from the vtable + the slot index.
883 * Obtain the vtable from the 'this' arg.
885 this_arg = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
888 vt = this_arg->vtable;
891 /* Normal virtual call */
892 vtable_slot = &(vt->vtable [slot]);
894 /* Avoid loading metadata or creating a generic vtable if possible */
895 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot, &error);
898 if (addr && !vt->klass->valuetype) {
899 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
902 return mono_create_ftnptr (mono_domain_get (), addr);
907 * is_generic_method_definition() above) also
908 * goes away if we do a
909 * mono_class_setup_vtable (vt->klass) here,
910 * because we then inflate the method
911 * correctly, put it in the cache, and the
912 * "wrong" inflation invocation still looks up
913 * the correctly inflated method.
915 * The hack above seems more stable and
918 m = mono_class_get_vtable_entry (vt->klass, slot);
921 vtable_slot = &(((gpointer*)vt) [slot]);
926 res = common_call_trampoline (regs, code, m, vt, vtable_slot, &error);
928 if (!mono_error_ok (&error)) {
929 mono_error_set_pending_exception (&error);
935 #ifndef DISABLE_REMOTING
937 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
939 MONO_REQ_GC_UNSAFE_MODE;
942 MonoGenericContext context = { NULL, NULL };
943 MonoMethod *imt_method, *declaring;
946 UnlockedIncrement (&trampoline_calls);
948 g_assert (m->is_generic);
951 declaring = mono_method_get_declaring_generic_method (m);
955 if (mono_class_is_ginst (m->klass))
956 context.class_inst = mono_class_get_generic_class (m->klass)->context.class_inst;
958 g_assert (!mono_class_is_gtd (m->klass));
960 imt_method = mono_arch_find_imt_method (regs, code);
961 if (imt_method->is_inflated)
962 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
963 m = mono_class_inflate_generic_method_checked (declaring, &context, &error);
964 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */;
965 m = mono_marshal_get_remoting_invoke_with_check (m);
967 addr = mono_jit_compile_method (m, &error);
968 if (!mono_error_ok (&error)) {
969 mono_error_set_pending_exception (&error);
979 * mono_aot_trampoline:
981 * This trampoline handles calls made from AOT code. We try to bypass the
982 * normal JIT compilation logic to avoid loading the metadata for the method.
984 #ifdef MONO_ARCH_AOT_SUPPORTED
986 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
989 MONO_REQ_GC_UNSAFE_MODE;
993 MonoMethod *method = NULL;
998 UnlockedIncrement (&trampoline_calls);
1000 image = (MonoImage *)*(gpointer*)(gpointer)token_info;
1001 token_info += sizeof (gpointer);
1002 token = *(guint32*)(gpointer)token_info;
1004 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token, &error);
1005 if (!is_ok (&error))
1006 mono_error_cleanup (&error);
1008 method = mono_get_method_checked (image, token, NULL, NULL, &error);
1010 g_error ("Could not load AOT trampoline due to %s", mono_error_get_message (&error));
1012 /* Use the generic code */
1013 return mono_magic_trampoline (regs, code, method, tramp);
1016 addr = mono_create_ftnptr (mono_domain_get (), addr);
1018 /* This is a normal call through a PLT entry */
1019 plt_entry = mono_aot_get_plt_entry (code);
1020 g_assert (plt_entry);
1022 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
1028 * mono_aot_plt_trampoline:
1030 * This trampoline handles calls made from AOT code through the PLT table.
1033 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
1036 MONO_REQ_GC_UNSAFE_MODE;
1038 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
1042 UnlockedIncrement (&trampoline_calls);
1044 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code, &error);
1046 if (!mono_error_ok (&error)) {
1047 mono_error_set_pending_exception (&error);
1050 // FIXME: Error handling (how ?)
1059 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
1061 MONO_REQ_GC_UNSAFE_MODE;
1063 guint32 slot = GPOINTER_TO_UINT (data);
1064 mgreg_t *r = (mgreg_t*)regs;
1065 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
1066 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
1067 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1071 UnlockedIncrement (&trampoline_calls);
1072 UnlockedIncrement (&rgctx_unmanaged_lookups);
1075 res = mono_method_fill_runtime_generic_context ((MonoMethodRuntimeGenericContext *)arg, index, &error);
1077 res = mono_class_fill_runtime_generic_context ((MonoVTable *)arg, index, &error);
1078 if (!mono_error_ok (&error)) {
1079 mono_error_set_pending_exception (&error);
1086 * mono_delegate_trampoline:
1088 * This trampoline handles calls made to Delegate:Invoke ().
1089 * This is called once the first time a delegate is invoked, so it must be fast.
1092 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *arg, guint8* tramp)
1094 MONO_REQ_GC_UNSAFE_MODE;
1096 MonoDomain *domain = mono_domain_get ();
1097 MonoDelegate *delegate;
1100 MonoMethod *method = NULL;
1102 gboolean multicast, callvirt = FALSE, closed_over_null = FALSE;
1103 gboolean need_rgctx_tramp = FALSE;
1104 gboolean need_unbox_tramp = FALSE;
1105 gboolean enable_caching = TRUE;
1106 MonoDelegateTrampInfo *tramp_info = (MonoDelegateTrampInfo*)arg;
1107 MonoMethod *invoke = tramp_info->invoke;
1108 guint8 *impl_this = (guint8 *)tramp_info->impl_this;
1109 guint8 *impl_nothis = (guint8 *)tramp_info->impl_nothis;
1111 MonoMethodSignature *sig;
1112 gpointer addr, compiled_method;
1113 gboolean is_remote = FALSE;
1115 UnlockedIncrement (&trampoline_calls);
1117 /* Obtain the delegate object according to the calling convention */
1118 delegate = (MonoDelegate *)mono_arch_get_this_arg_from_call (regs, code);
1119 g_assert (mono_class_has_parent (mono_object_class (delegate), mono_defaults.multicastdelegate_class));
1121 if (delegate->method) {
1122 method = delegate->method;
1125 * delegate->method_ptr == NULL means the delegate was initialized by
1126 * mini_delegate_ctor, while != NULL means it is initialized by
1127 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
1128 * (ctor_with_method () does this, but it doesn't store the wrapper back into
1129 * delegate->method).
1131 #ifndef DISABLE_REMOTING
1132 if (delegate->target && mono_object_is_transparent_proxy (delegate->target)) {
1135 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_class_get_com_object_class () &&
1136 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1138 method = mono_marshal_get_remoting_invoke (method);
1142 sig = tramp_info->sig;
1143 if (!(sig && method == tramp_info->method)) {
1145 sig = mono_method_signature_checked (method, &err);
1147 mono_error_set_pending_exception (&err);
1152 if (sig->hasthis && method->klass->valuetype) {
1153 gboolean need_unbox = TRUE;
1155 if (tramp_info->invoke_sig->param_count > sig->param_count && tramp_info->invoke_sig->params [0]->byref)
1160 need_unbox_tramp = TRUE;
1162 method = mono_marshal_get_unbox_wrapper (method);
1166 // If "delegate->method_ptr" is null mono_get_addr_from_ftnptr will fail if
1167 // ftnptrs are being used. "method" would end up null on archtitectures without
1168 // ftnptrs so we can just skip this.
1169 } else if (delegate->method_ptr) {
1170 ji = mono_jit_info_table_find (domain, (char *)mono_get_addr_from_ftnptr (delegate->method_ptr));
1172 method = jinfo_get_method (ji);
1176 sig = tramp_info->sig;
1177 if (!(sig && method == tramp_info->method)) {
1179 sig = mono_method_signature_checked (method, &err);
1181 mono_error_set_pending_exception (&err);
1186 callvirt = !delegate->target && sig->hasthis;
1188 closed_over_null = tramp_info->invoke_sig->param_count == sig->param_count;
1190 if (callvirt && !closed_over_null) {
1192 * The delegate needs to make a virtual call to the target method using its
1193 * first argument as the receiver. This is hard to support in full-aot, so
1194 * optimize it in some cases if possible.
1195 * If the target method is not virtual or is in a sealed class,
1196 * the vcall will call it directly.
1197 * If the call doesn't return a valuetype, then the vcall uses the same calling
1198 * convention as a normal call.
1200 if ((mono_class_is_sealed (method->klass) || !(method->flags & METHOD_ATTRIBUTE_VIRTUAL)) && !MONO_TYPE_ISSTRUCT (sig->ret)) {
1202 enable_caching = FALSE;
1206 if (delegate->target &&
1207 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1208 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1209 mono_class_is_abstract (method->klass)) {
1210 method = mono_object_get_virtual_method (delegate->target, method);
1211 enable_caching = FALSE;
1214 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1215 method = mono_marshal_get_synchronized_wrapper (method);
1217 if (method == tramp_info->method)
1218 need_rgctx_tramp = tramp_info->need_rgctx_tramp;
1219 else if (mono_method_needs_static_rgctx_invoke (method, FALSE))
1220 need_rgctx_tramp = TRUE;
1224 * If the called address is a trampoline, replace it with the compiled method so
1225 * further calls don't have to go through the trampoline.
1227 if (method && !callvirt) {
1228 /* Avoid the overhead of looking up an already compiled method if possible */
1229 if (enable_caching && delegate->method_code && *delegate->method_code) {
1230 delegate->method_ptr = *delegate->method_code;
1232 compiled_method = addr = mono_jit_compile_method (method, &error);
1233 if (!mono_error_ok (&error)) {
1234 mono_error_set_pending_exception (&error);
1237 addr = mini_add_method_trampoline (method, compiled_method, need_rgctx_tramp, need_unbox_tramp);
1238 delegate->method_ptr = addr;
1239 if (enable_caching && delegate->method_code)
1240 *delegate->method_code = (guint8 *)delegate->method_ptr;
1243 if (need_rgctx_tramp)
1244 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1247 /* Necessary for !code condition to fallback to slow path */
1250 multicast = ((MonoMulticastDelegate*)delegate)->delegates != NULL;
1251 if (!multicast && !callvirt) {
1252 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1253 /* Closed static delegate */
1256 code = delegate->target ? impl_this : impl_nothis;
1260 /* The general, unoptimized case */
1261 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1262 code = (guint8 *)mono_jit_compile_method (m, &error);
1263 if (!mono_error_ok (&error)) {
1264 mono_error_set_pending_exception (&error);
1267 code = (guint8 *)mini_add_method_trampoline (m, code, mono_method_needs_static_rgctx_invoke (m, FALSE), FALSE);
1270 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1271 if (enable_caching && !callvirt && tramp_info->method) {
1272 tramp_info->method_ptr = delegate->method_ptr;
1273 tramp_info->invoke_impl = delegate->invoke_impl;
1280 * mono_get_trampoline_func:
1282 * Return the C function which needs to be called by the generic trampoline of type
1286 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1288 switch (tramp_type) {
1289 case MONO_TRAMPOLINE_JIT:
1290 case MONO_TRAMPOLINE_JUMP:
1291 return mono_magic_trampoline;
1292 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1293 return mono_rgctx_lazy_fetch_trampoline;
1294 #ifdef MONO_ARCH_AOT_SUPPORTED
1295 case MONO_TRAMPOLINE_AOT:
1296 return mono_aot_trampoline;
1297 case MONO_TRAMPOLINE_AOT_PLT:
1298 return mono_aot_plt_trampoline;
1300 case MONO_TRAMPOLINE_DELEGATE:
1301 return mono_delegate_trampoline;
1302 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1303 return mono_altstack_restore_prot;
1304 #ifndef DISABLE_REMOTING
1305 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1306 return mono_generic_virtual_remoting_trampoline;
1308 case MONO_TRAMPOLINE_VCALL:
1309 return mono_vcall_trampoline;
1311 g_assert_not_reached ();
1317 create_trampoline_code (MonoTrampolineType tramp_type)
1319 MonoTrampInfo *info;
1322 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1323 mono_tramp_info_register (info, NULL);
1329 mono_trampolines_init (void)
1331 mono_os_mutex_init_recursive (&trampolines_mutex);
1336 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1337 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1338 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1339 #ifdef MONO_ARCH_AOT_SUPPORTED
1340 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1341 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1343 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1344 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1345 #ifndef DISABLE_REMOTING
1346 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1348 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1350 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1351 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1352 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1353 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1354 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &rgctx_unmanaged_lookups);
1355 mono_counters_register ("RGCTX num lazy fetch trampolines", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &rgctx_num_lazy_fetch_trampolines);
1359 mono_trampolines_cleanup (void)
1361 if (rgctx_lazy_fetch_trampoline_hash)
1362 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1363 if (rgctx_lazy_fetch_trampoline_hash_addr)
1364 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1366 mono_os_mutex_destroy (&trampolines_mutex);
1370 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1372 g_assert (mono_trampoline_code [tramp_type]);
1374 return mono_trampoline_code [tramp_type];
1378 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1384 code = mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, &len);
1386 code = mono_arch_create_specific_trampoline (arg1, tramp_type, domain, &len);
1387 mono_lldb_save_specific_trampoline_info (arg1, tramp_type, domain, code, len);
1394 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper, MonoError *error)
1398 guint32 code_size = 0;
1402 #ifdef ENABLE_INTERPRETER
1403 if (mono_use_interpreter) {
1404 gpointer ret = mono_interp_create_trampoline (domain, method, error);
1405 if (!mono_error_ok (error))
1411 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1413 * We cannot recover the correct type of a shared generic
1414 * method from its native code address, so we use the
1415 * trampoline instead.
1416 * For synchronized methods, the trampoline adds the wrapper.
1418 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1421 if (mono_llvm_only) {
1422 code = mono_jit_compile_method (method, error);
1423 if (!mono_error_ok (error))
1428 mono_domain_lock (domain);
1429 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1430 mono_domain_unlock (domain);
1434 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1435 g_assert (code_size);
1437 ji = (MonoJitInfo *)mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1438 ji->code_start = code;
1439 ji->code_size = code_size;
1440 ji->d.method = method;
1443 * mono_delegate_ctor needs to find the method metadata from the
1444 * trampoline address, so we save it here.
1447 mono_jit_info_table_add (domain, ji);
1449 mono_domain_lock (domain);
1450 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1451 mono_domain_unlock (domain);
1453 return ji->code_start;
1457 method_not_found (void)
1459 g_assert_not_reached ();
1463 mono_create_jit_trampoline (MonoDomain *domain, MonoMethod *method, MonoError *error)
1469 if (mono_aot_only) {
1470 if (mono_llvm_only && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1471 method = mono_marshal_get_synchronized_wrapper (method);
1473 /* Avoid creating trampolines if possible */
1474 gpointer code = mono_jit_find_compiled_method (domain, method);
1478 if (mono_llvm_only) {
1479 if (method->wrapper_type == MONO_WRAPPER_PROXY_ISINST)
1480 /* These wrappers are not generated */
1481 return method_not_found;
1482 /* Methods are lazily initialized on first call, so this can't lead recursion */
1483 code = mono_jit_compile_method (method, error);
1484 if (!mono_error_ok (error))
1490 mono_domain_lock (domain);
1491 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1492 mono_domain_unlock (domain);
1496 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1498 mono_domain_lock (domain);
1499 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1500 UnlockedIncrement (&jit_trampolines);
1501 mono_domain_unlock (domain);
1507 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
1511 MonoDomain *domain = mono_domain_get ();
1512 guint8 *buf, *start;
1514 buf = start = (guint8 *)mono_domain_alloc0 (domain, 2 * sizeof (gpointer));
1516 *(gpointer*)(gpointer)buf = image;
1517 buf += sizeof (gpointer);
1518 *(guint32*)(gpointer)buf = token;
1520 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
1522 UnlockedIncrement (&jit_trampolines);
1529 * mono_create_delegate_trampoline_info:
1531 * Create a trampoline info structure for the KLASS+METHOD pair.
1533 MonoDelegateTrampInfo*
1534 mono_create_delegate_trampoline_info (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1538 MonoDelegateTrampInfo *tramp_info;
1539 MonoClassMethodPair pair, *dpair;
1540 guint32 code_size = 0;
1543 pair.method = method;
1544 mono_domain_lock (domain);
1545 tramp_info = (MonoDelegateTrampInfo *)g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, &pair);
1546 mono_domain_unlock (domain);
1550 invoke = mono_get_delegate_invoke (klass);
1553 tramp_info = (MonoDelegateTrampInfo *)mono_domain_alloc0 (domain, sizeof (MonoDelegateTrampInfo));
1554 tramp_info->invoke = invoke;
1555 tramp_info->invoke_sig = mono_method_signature (invoke);
1556 tramp_info->impl_this = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1557 tramp_info->impl_nothis = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1558 tramp_info->method = method;
1560 error_init (&error);
1561 tramp_info->sig = mono_method_signature_checked (method, &error);
1562 tramp_info->need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (method, FALSE);
1564 tramp_info->invoke_impl = mono_create_specific_trampoline (tramp_info, MONO_TRAMPOLINE_DELEGATE, domain, &code_size);
1565 g_assert (code_size);
1567 dpair = (MonoClassMethodPair *)mono_domain_alloc0 (domain, sizeof (MonoClassMethodPair));
1568 memcpy (dpair, &pair, sizeof (MonoClassMethodPair));
1570 /* store trampoline address */
1571 mono_domain_lock (domain);
1572 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash, dpair, tramp_info);
1573 mono_domain_unlock (domain);
1579 no_delegate_trampoline (void)
1581 g_assert_not_reached ();
1585 mono_create_delegate_trampoline (MonoDomain *domain, MonoClass *klass)
1587 if (mono_llvm_only || mono_use_interpreter)
1588 return no_delegate_trampoline;
1590 return mono_create_delegate_trampoline_info (domain, klass, NULL)->invoke_impl;
1594 mono_create_delegate_virtual_trampoline (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1596 MonoMethod *invoke = mono_get_delegate_invoke (klass);
1599 return mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), method);
1603 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1605 MonoTrampInfo *info;
1606 gpointer tramp, ptr;
1608 mono_trampolines_lock ();
1609 if (rgctx_lazy_fetch_trampoline_hash)
1610 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1613 mono_trampolines_unlock ();
1617 if (mono_aot_only) {
1618 ptr = mono_aot_get_lazy_fetch_trampoline (offset);
1620 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1621 mono_tramp_info_register (info, NULL);
1622 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1625 mono_trampolines_lock ();
1626 if (!rgctx_lazy_fetch_trampoline_hash) {
1627 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1628 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1630 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1631 g_assert (offset != -1);
1632 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1633 rgctx_num_lazy_fetch_trampolines ++;
1634 mono_trampolines_unlock ();
1640 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1644 mono_trampolines_lock ();
1645 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1646 /* We store the real offset + 1 so we can detect when the lookup fails */
1647 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1655 mono_trampolines_unlock ();
1659 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1666 "restore_stack_prot",
1667 "generic_virtual_remoting",
1672 * mono_get_generic_trampoline_simple_name:
1676 mono_get_generic_trampoline_simple_name (MonoTrampolineType tramp_type)
1678 return tramp_names [tramp_type];
1682 * mono_get_generic_trampoline_name:
1684 * Returns a pointer to malloc-ed memory.
1687 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1689 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1693 * mono_get_rgctx_fetch_trampoline_name:
1695 * Returns a pointer to malloc-ed memory.
1698 mono_get_rgctx_fetch_trampoline_name (int slot)
1703 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1704 index = MONO_RGCTX_SLOT_INDEX (slot);
1706 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);
1710 * mini_get_single_step_trampoline:
1712 * Return a trampoline which calls debugger_agent_single_step_from_context ().
1715 mini_get_single_step_trampoline (void)
1717 static gpointer trampoline;
1722 if (mono_aot_only) {
1723 tramp = mono_aot_get_trampoline ("sdb_single_step_trampoline");
1725 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1726 MonoTrampInfo *info;
1727 tramp = mono_arch_create_sdb_trampoline (TRUE, &info, FALSE);
1728 mono_tramp_info_register (info, NULL);
1731 g_assert_not_reached ();
1734 mono_memory_barrier ();
1742 * mini_get_breakpoint_trampoline:
1744 * Return a trampoline which calls debugger_agent_breakpoint_from_context ().
1747 mini_get_breakpoint_trampoline (void)
1749 static gpointer trampoline;
1754 if (mono_aot_only) {
1755 tramp = mono_aot_get_trampoline ("sdb_breakpoint_trampoline");
1757 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1758 MonoTrampInfo *info;
1759 tramp = mono_arch_create_sdb_trampoline (FALSE, &info, FALSE);
1760 mono_tramp_info_register (info, NULL);
1763 g_assert_not_reached ();
1766 mono_memory_barrier ();