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>
24 #ifdef ENABLE_INTERPRETER
25 #include "interp/interp.h"
29 * Address of the trampoline code. This is used by the debugger to check
30 * whether a method is a trampoline.
32 guint8* mono_trampoline_code [MONO_TRAMPOLINE_NUM];
34 static GHashTable *rgctx_lazy_fetch_trampoline_hash;
35 static GHashTable *rgctx_lazy_fetch_trampoline_hash_addr;
36 static guint32 trampoline_calls, jit_trampolines, unbox_trampolines, static_rgctx_trampolines;
38 #define mono_trampolines_lock() mono_os_mutex_lock (&trampolines_mutex)
39 #define mono_trampolines_unlock() mono_os_mutex_unlock (&trampolines_mutex)
40 static mono_mutex_t trampolines_mutex;
42 #ifdef MONO_ARCH_GSHARED_SUPPORTED
50 rgctx_tramp_info_equal (gconstpointer ka, gconstpointer kb)
52 const RgctxTrampInfo *i1 = (const RgctxTrampInfo *)ka;
53 const RgctxTrampInfo *i2 = (const RgctxTrampInfo *)kb;
55 if (i1->m == i2->m && i1->addr == i2->addr)
62 rgctx_tramp_info_hash (gconstpointer data)
64 const RgctxTrampInfo *info = (const RgctxTrampInfo *)data;
66 return GPOINTER_TO_UINT (info->m) ^ GPOINTER_TO_UINT (info->addr);
70 * mono_create_static_rgctx_trampoline:
71 * \param m the mono method to create a trampoline for
72 * \param addr the address to jump to (where the compiled code for M lives)
74 * Creates a static rgctx trampoline for M which branches to ADDR which should
75 * point to the compiled code of M.
77 * Static rgctx trampolines are used when a shared generic method which doesn't
78 * have a this argument is called indirectly, ie. from code which can't pass in
79 * the rgctx argument. The trampoline sets the rgctx argument and jumps to the
80 * methods code. These trampolines are similar to the unbox trampolines, they
81 * perform the same task as the static rgctx wrappers, but they are smaller/faster,
82 * and can be made to work with full AOT.
84 * On PPC addr should be an ftnptr and the return value is an ftnptr too.
86 * \returns the generated static rgctx trampoline.
89 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
94 RgctxTrampInfo tmp_info;
97 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
98 g_assert (((gpointer*)addr) [2] == 0);
101 ctx = mini_method_get_rgctx (m);
103 domain = mono_domain_get ();
106 * In the AOT case, addr might point to either the method, or to an unbox trampoline,
107 * so make the hash keyed on the m+addr pair.
109 mono_domain_lock (domain);
110 if (!domain_jit_info (domain)->static_rgctx_trampoline_hash)
111 domain_jit_info (domain)->static_rgctx_trampoline_hash = g_hash_table_new (rgctx_tramp_info_hash, rgctx_tramp_info_equal);
113 tmp_info.addr = addr;
114 res = g_hash_table_lookup (domain_jit_info (domain)->static_rgctx_trampoline_hash,
116 mono_domain_unlock (domain);
121 res = mono_aot_get_static_rgctx_trampoline (ctx, addr);
123 res = mono_arch_get_static_rgctx_trampoline (ctx, addr);
125 mono_domain_lock (domain);
126 /* Duplicates inserted while we didn't hold the lock are OK */
127 info = (RgctxTrampInfo *)mono_domain_alloc (domain, sizeof (RgctxTrampInfo));
130 g_hash_table_insert (domain_jit_info (domain)->static_rgctx_trampoline_hash, info, res);
131 mono_domain_unlock (domain);
133 static_rgctx_trampolines ++;
139 mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
142 * This shouldn't happen as all arches which support generic sharing support
143 * static rgctx trampolines as well.
145 g_assert_not_reached ();
150 #define DEBUG_IMT(stmt) do { stmt; } while (0)
152 #define DEBUG_IMT(stmt) do { } while (0)
156 * mini_resolve_imt_method:
158 * Resolve the actual method called when making an IMT call through VTABLE_SLOT with IMT_METHOD as the interface method.
160 * Either IMPL_METHOD or OUT_AOT_ADDR will be set on return.
163 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)
165 MonoMethod *impl = NULL, *generic_virtual = NULL;
166 gboolean lookup_aot, variance_used = FALSE, need_rgctx_tramp = FALSE;
168 guint8 *aot_addr = NULL;
169 int displacement = vtable_slot - ((gpointer*)vt);
170 int interface_offset;
171 int imt_slot = MONO_IMT_SIZE + displacement;
173 g_assert (imt_slot < MONO_IMT_SIZE);
176 /* This has to be variance aware since imt_method can be from an interface that vt->klass doesn't directly implement */
177 interface_offset = mono_class_interface_offset_with_variance (vt->klass, imt_method->klass, &variance_used);
178 if (interface_offset < 0)
179 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));
181 *variant_iface = NULL;
182 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
183 /* Generic virtual method */
184 generic_virtual = imt_method;
185 need_rgctx_tramp = TRUE;
186 } else if (variance_used && mono_class_has_variant_generic_params (imt_method->klass)) {
187 *variant_iface = imt_method;
191 /* We can only use the AOT compiled code if we don't require further processing */
192 lookup_aot = !generic_virtual & !variant_iface;
195 mono_vtable_build_imt_slot (vt, mono_method_get_imt_slot (imt_method));
197 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
198 MonoGenericContext context = { NULL, NULL };
201 * Generic virtual method, imt_method contains the inflated interface
202 * method, need to get the inflated impl method.
204 /* imt_method->slot might not be set */
205 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_declaring_generic_method (imt_method)->slot);
207 if (mono_class_is_ginst (impl->klass))
208 context.class_inst = mono_class_get_generic_class (impl->klass)->context.class_inst;
209 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
210 impl = mono_class_inflate_generic_method_checked (impl, &context, error);
211 mono_error_assert_ok (error);
214 /* Avoid loading metadata or creating a generic vtable if possible */
215 if (lookup_aot && !vt->klass->valuetype) {
216 aot_addr = (guint8 *)mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, interface_offset + mono_method_get_vtable_slot (imt_method), error);
217 return_val_if_nok (error, NULL);
224 impl = mono_class_get_vtable_entry (vt->klass, interface_offset + mono_method_get_vtable_slot (imt_method));
227 if (impl && mono_method_needs_static_rgctx_invoke (impl, FALSE))
228 need_rgctx_tramp = TRUE;
229 if (impl && impl->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
230 WrapperInfo *info = mono_marshal_get_wrapper_info (impl);
232 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER)
233 need_rgctx_tramp = TRUE;
236 *out_need_rgctx_tramp = need_rgctx_tramp;
237 *out_aot_addr = aot_addr;
239 DEBUG_IMT (printf ("mono_convert_imt_slot_to_vtable_slot: method = %s.%s.%s, imt_method = %s.%s.%s\n",
240 method->klass->name_space, method->klass->name, method->name,
241 imt_method->klass->name_space, imt_method->klass->name, imt_method->name));
243 if (vt->imt_collisions_bitmap & (1 << imt_slot)) {
244 int slot = mono_method_get_vtable_index (imt_method);
247 g_assert (slot != -1);
248 vtable_offset = interface_offset + slot;
249 vtable_slot = & (vt->vtable [vtable_offset]);
250 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));
253 DEBUG_IMT (printf ("mono_convert_imt_slot_to_vtable_slot: slot %p[%d] is in the IMT, but not colliding\n", slot, imt_slot));
259 * This is a super-ugly hack to fix bug #616463.
261 * The problem is that we don't always set is_generic for generic
262 * method definitions. See the comment at the end of
263 * mono_class_inflate_generic_method_full_checked() in class.c.
266 is_generic_method_definition (MonoMethod *m)
268 MonoGenericContext *context;
274 context = mono_method_get_context (m);
275 if (!context->method_inst)
277 if (context->method_inst == mono_method_get_generic_container (((MonoMethodInflated*)m)->declaring)->context.method_inst)
283 mini_jit_info_is_gsharedvt (MonoJitInfo *ji)
285 if (ji && ji->has_generic_jit_info && (mono_jit_info_get_generic_sharing_context (ji)->is_gsharedvt))
292 * mini_add_method_trampoline:
295 * @add_static_rgctx_tramp: adds a static rgctx trampoline
296 * @add_unbox_tramp: adds an unboxing trampoline
298 * Add static rgctx/gsharedvt_in/unbox trampolines to
299 * M/COMPILED_METHOD if needed.
301 * Returns the trampoline address, or COMPILED_METHOD if no trampoline
305 mini_add_method_trampoline (MonoMethod *m, gpointer compiled_method, gboolean add_static_rgctx_tramp, gboolean add_unbox_tramp)
307 gpointer addr = compiled_method;
308 gboolean callee_gsharedvt, callee_array_helper;
309 MonoMethod *jmethod = NULL;
312 // FIXME: This loads information from AOT (perf problem)
313 ji = mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
314 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
316 callee_array_helper = FALSE;
317 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
318 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
321 * generic array helpers.
322 * Have to replace the wrappers with the original generic instances.
324 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
325 callee_array_helper = TRUE;
326 m = info->d.generic_array_helper.method;
328 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
329 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
331 /* Same for synchronized inner wrappers */
332 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
333 m = info->d.synchronized_inner.method;
337 if (callee_gsharedvt)
338 g_assert (m->is_inflated);
340 addr = compiled_method;
342 if (add_unbox_tramp) {
344 * The unbox trampolines call the method directly, so need to add
345 * an rgctx tramp before them.
348 addr = mono_aot_get_unbox_trampoline (m);
350 unbox_trampolines ++;
351 addr = mono_arch_get_unbox_trampoline (m, addr);
355 if (ji && !ji->is_trampoline)
356 jmethod = jinfo_get_method (ji);
357 if (callee_gsharedvt && mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod))) {
358 MonoMethodSignature *sig, *gsig;
360 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
362 /* Call from normal/gshared code to gsharedvt code with variable signature */
363 sig = mono_method_signature (m);
364 gsig = mono_method_signature (jmethod);
366 addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, -1, FALSE);
369 g_assert_not_reached ();
370 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
373 if (callee_array_helper) {
374 add_static_rgctx_tramp = FALSE;
375 /* In AOT mode, compiled_method points to one of the InternalArray methods in Array. */
376 if (ji && !mono_llvm_only && mono_method_needs_static_rgctx_invoke (jinfo_get_method (ji), TRUE))
377 add_static_rgctx_tramp = TRUE;
381 add_static_rgctx_tramp = FALSE;
383 if (add_static_rgctx_tramp)
384 addr = mono_create_static_rgctx_trampoline (m, addr);
390 * mini_create_llvmonly_ftndesc:
392 * Create a function descriptor of the form <addr, arg>, which
393 * represents a callee ADDR with ARG as the last argument.
395 * - generic sharing (ARG is the rgctx)
396 * - gsharedvt signature wrappers (ARG is a function descriptor)
399 mini_create_llvmonly_ftndesc (MonoDomain *domain, gpointer addr, gpointer arg)
401 MonoFtnDesc *ftndesc = (MonoFtnDesc*)mono_domain_alloc0 (mono_domain_get (), 2 * sizeof (gpointer));
402 ftndesc->addr = addr;
409 * mini_add_method_wrappers_llvmonly:
411 * Add unbox/gsharedvt wrappers around COMPILED_METHOD if needed. Return the wrapper address or COMPILED_METHOD
412 * if no wrapper is needed. Set OUT_ARG to the rgctx/extra argument needed to be passed to the returned method.
415 mini_add_method_wrappers_llvmonly (MonoMethod *m, gpointer compiled_method, gboolean caller_gsharedvt, gboolean add_unbox_tramp, gpointer *out_arg)
418 gboolean callee_gsharedvt, callee_array_helper;
419 MonoMethod *jmethod = NULL;
422 // FIXME: This loads information from AOT (perf problem)
423 ji = mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
424 callee_gsharedvt = mini_jit_info_is_gsharedvt (ji);
426 callee_array_helper = FALSE;
427 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED) {
428 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
431 * generic array helpers.
432 * Have to replace the wrappers with the original generic instances.
434 if (info && info->subtype == WRAPPER_SUBTYPE_GENERIC_ARRAY_HELPER) {
435 callee_array_helper = TRUE;
436 m = info->d.generic_array_helper.method;
438 } else if (m->wrapper_type == MONO_WRAPPER_UNKNOWN) {
439 WrapperInfo *info = mono_marshal_get_wrapper_info (m);
441 /* Same for synchronized inner wrappers */
442 if (info && info->subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) {
443 m = info->d.synchronized_inner.method;
447 if (callee_gsharedvt)
448 g_assert (m->is_inflated);
450 addr = compiled_method;
452 if (add_unbox_tramp) {
454 * The unbox trampolines call the method directly, so need to add
455 * an rgctx tramp before them.
458 addr = mono_aot_get_unbox_trampoline (m);
460 unbox_trampolines ++;
461 addr = mono_arch_get_unbox_trampoline (m, addr);
465 g_assert (mono_llvm_only);
468 if (ji && !ji->is_trampoline)
469 jmethod = jinfo_get_method (ji);
471 if (callee_gsharedvt)
472 callee_gsharedvt = mini_is_gsharedvt_variable_signature (mono_method_signature (jmethod));
474 if (!caller_gsharedvt && callee_gsharedvt) {
475 MonoMethodSignature *sig, *gsig;
476 gpointer wrapper_addr;
478 /* Here m is a generic instance, while ji->method is the gsharedvt method implementing it */
480 /* Call from normal/gshared code to gsharedvt code with variable signature */
481 sig = mono_method_signature (m);
482 gsig = mono_method_signature (jmethod);
484 wrapper_addr = mini_get_gsharedvt_wrapper (TRUE, addr, sig, gsig, -1, FALSE);
487 * This is a gsharedvt in wrapper, it gets passed a ftndesc for the gsharedvt method as an argument.
489 *out_arg = mini_create_llvmonly_ftndesc (mono_domain_get (), addr, mini_method_get_rgctx (m));
491 //printf ("IN: %s\n", mono_method_full_name (m, TRUE));
494 if (!(*out_arg) && mono_method_needs_static_rgctx_invoke (m, FALSE))
495 *out_arg = mini_method_get_rgctx (m);
497 if (caller_gsharedvt && !callee_gsharedvt) {
499 * The callee uses the gsharedvt calling convention, have to add an out wrapper.
501 gpointer out_wrapper = mini_get_gsharedvt_wrapper (FALSE, NULL, mono_method_signature (m), NULL, -1, FALSE);
502 MonoFtnDesc *out_wrapper_arg = mini_create_llvmonly_ftndesc (mono_domain_get (), addr, *out_arg);
505 *out_arg = out_wrapper_arg;
512 * common_call_trampoline:
514 * The code to handle normal, virtual, and interface method calls and jumps, both
515 * from JITted and LLVM compiled code.
518 common_call_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, MonoVTable *vt, gpointer *vtable_slot, MonoError *error)
520 gpointer addr, compiled_method;
521 gboolean generic_shared = FALSE;
522 gboolean need_unbox_tramp = FALSE;
523 gboolean need_rgctx_tramp = FALSE;
524 MonoMethod *declaring = NULL;
525 MonoMethod *generic_virtual = NULL, *variant_iface = NULL;
527 gboolean imt_call, virtual_;
528 gpointer *orig_vtable_slot, *vtable_slot_to_patch = NULL;
529 MonoJitInfo *ji = NULL;
533 virtual_ = vt && (gpointer)vtable_slot > (gpointer)vt;
534 imt_call = vt && (gpointer)vtable_slot < (gpointer)vt;
537 * rgctx trampolines are needed when the call is indirect so the caller can't pass
538 * the rgctx argument needed by the callee.
541 need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (m, FALSE);
543 orig_vtable_slot = vtable_slot;
544 vtable_slot_to_patch = vtable_slot;
548 MonoMethod *imt_method = NULL, *impl_method = NULL;
549 MonoObject *this_arg;
551 g_assert (vtable_slot);
553 imt_method = mono_arch_find_imt_method (regs, code);
554 this_arg = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
556 if (mono_object_is_transparent_proxy (this_arg)) {
557 /* Use the slow path for now */
558 m = mono_object_get_virtual_method (this_arg, imt_method);
559 vtable_slot_to_patch = NULL;
561 if (imt_method->is_inflated && ((MonoMethodInflated*)imt_method)->context.method_inst) {
562 /* Generic virtual method */
563 generic_virtual = imt_method;
564 need_rgctx_tramp = TRUE;
567 vtable_slot = mini_resolve_imt_method (vt, vtable_slot, imt_method, &impl_method, &addr, &need_rgctx_tramp, &variant_iface, error);
568 return_val_if_nok (error, NULL);
570 /* We must handle magic interfaces on rank 1 arrays of ref types as if they were variant */
571 if (!variant_iface && vt->klass->rank == 1 && !vt->klass->element_class->valuetype && imt_method->klass->is_array_special_interface)
572 variant_iface = imt_method;
574 /* This is the vcall slot which gets called through the IMT trampoline */
575 vtable_slot_to_patch = vtable_slot;
579 * We found AOT compiled code for the method, skip the rest.
581 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
584 return mono_create_ftnptr (mono_domain_get (), addr);
592 * The virtual check is needed because is_generic_method_definition (m) could
593 * return TRUE for methods used in IMT calls too.
595 if (virtual_ && is_generic_method_definition (m)) {
596 MonoGenericContext context = { NULL, NULL };
597 MonoMethod *declaring;
600 declaring = mono_method_get_declaring_generic_method (m);
604 if (mono_class_is_ginst (m->klass))
605 context.class_inst = mono_class_get_generic_class (m->klass)->context.class_inst;
607 g_assert (!mono_class_is_gtd (m->klass));
609 generic_virtual = mono_arch_find_imt_method (regs, code);
610 g_assert (generic_virtual);
611 g_assert (generic_virtual->is_inflated);
612 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
614 m = mono_class_inflate_generic_method_checked (declaring, &context, error);
615 mono_error_assert_ok (error);
616 /* FIXME: only do this if the method is sharable */
617 need_rgctx_tramp = TRUE;
618 } else if ((context_used = mono_method_check_context_used (m))) {
619 MonoClass *klass = NULL;
620 MonoMethod *actual_method = NULL;
621 MonoVTable *vt = NULL;
622 MonoGenericInst *method_inst = NULL;
625 generic_shared = TRUE;
630 * The caller is gshared code, compute the actual method to call from M and this/rgctx.
632 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
633 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
635 klass = mrgctx->class_vtable->klass;
636 method_inst = mrgctx->method_inst;
637 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
638 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
640 klass = vtable->klass;
642 MonoObject *this_argument = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
644 vt = this_argument->vtable;
645 vtable_slot = orig_vtable_slot;
647 g_assert (this_argument->vtable->klass->inited);
650 mono_class_setup_supertypes (this_argument->vtable->klass);
651 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
655 g_assert (vtable_slot || klass);
658 int displacement = vtable_slot - ((gpointer*)vt);
660 g_assert_not_reached ();
662 g_assert (displacement > 0);
664 actual_method = vt->klass->vtable [displacement];
667 if (method_inst || m->wrapper_type) {
668 MonoGenericContext context = { NULL, NULL };
671 declaring = mono_method_get_declaring_generic_method (m);
675 if (mono_class_is_ginst (klass))
676 context.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
677 else if (mono_class_is_gtd (klass))
678 context.class_inst = mono_class_get_generic_container (klass)->context.class_inst;
679 context.method_inst = method_inst;
681 actual_method = mono_class_inflate_generic_method_checked (declaring, &context, error);
682 mono_error_assert_ok (error);
684 actual_method = mono_class_get_method_generic (klass, m);
688 g_assert (actual_method);
689 g_assert (actual_method->klass == klass);
691 if (actual_method->is_inflated)
692 declaring = mono_method_get_declaring_generic_method (actual_method);
699 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
700 m = mono_marshal_get_synchronized_wrapper (m);
701 need_rgctx_tramp = FALSE;
704 /* Calls made through delegates on platforms without delegate trampolines */
705 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
706 need_rgctx_tramp = TRUE;
708 addr = compiled_method = mono_jit_compile_method (m, error);
712 if (generic_virtual || variant_iface) {
713 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
714 need_unbox_tramp = TRUE;
715 } else if (orig_vtable_slot) {
716 if (m->klass->valuetype)
717 need_unbox_tramp = TRUE;
720 addr = mini_add_method_trampoline (m, compiled_method, need_rgctx_tramp, need_unbox_tramp);
722 if (generic_virtual || variant_iface) {
723 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
725 vtable_slot = orig_vtable_slot;
726 g_assert (vtable_slot);
728 mono_method_add_generic_virtual_invocation (mono_domain_get (),
735 /* the method was jumped to */
737 MonoDomain *domain = mono_domain_get ();
739 /* Patch the got entries pointing to this method */
741 * We do this here instead of in mono_codegen () to cover the case when m
742 * was loaded from an aot image.
744 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
747 mono_domain_lock (domain);
748 list = (GSList *)g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
750 for (tmp = list; tmp; tmp = tmp->next) {
751 gpointer *got_slot = (gpointer *)tmp->data;
754 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
757 mono_domain_unlock (domain);
763 vtable_slot = orig_vtable_slot;
766 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))) {
767 g_assert (*vtable_slot_to_patch);
768 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
771 guint8 *plt_entry = mono_aot_get_plt_entry (code);
772 gboolean no_patch = FALSE;
773 MonoJitInfo *target_ji;
776 if (generic_shared) {
778 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
780 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
782 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
787 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
789 if (generic_shared) {
790 if (m->wrapper_type != MONO_WRAPPER_NONE)
791 m = mono_marshal_method_from_wrapper (m);
792 //g_assert (mono_method_is_generic_sharable (m, FALSE));
795 /* Patch calling code */
797 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
799 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
801 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
803 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
804 * generic sharing fails.
805 * FIXME: Performance problem.
809 #if LLVM_API_VERSION > 100
810 /* LLVM code doesn't make direct calls */
811 if (ji && ji->from_llvm)
814 if (!no_patch && mono_method_same_domain (ji, target_ji))
815 mono_arch_patch_callsite ((guint8 *)ji->code_start, code, (guint8 *)addr);
823 * mono_magic_trampoline:
825 * This trampoline handles normal calls from JITted code.
828 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
833 MONO_REQ_GC_UNSAFE_MODE;
835 g_assert (mono_thread_is_gc_unsafe_mode ());
839 res = common_call_trampoline (regs, code, (MonoMethod *)arg, NULL, NULL, &error);
840 if (!is_ok (&error)) {
841 mono_error_set_pending_exception (&error);
849 * mono_vcall_trampoline:
851 * This trampoline handles virtual calls.
854 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
856 MONO_REQ_GC_UNSAFE_MODE;
858 MonoObject *this_arg;
860 gpointer *vtable_slot;
863 gpointer addr, res = NULL;
868 * We need to obtain the following pieces of information:
869 * - the method which needs to be compiled.
871 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
872 * the other two can be computed from the vtable + the slot index.
876 * Obtain the vtable from the 'this' arg.
878 this_arg = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
881 vt = this_arg->vtable;
884 /* Normal virtual call */
885 vtable_slot = &(vt->vtable [slot]);
887 /* Avoid loading metadata or creating a generic vtable if possible */
888 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot, &error);
891 if (addr && !vt->klass->valuetype) {
892 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
895 return mono_create_ftnptr (mono_domain_get (), addr);
900 * is_generic_method_definition() above) also
901 * goes away if we do a
902 * mono_class_setup_vtable (vt->klass) here,
903 * because we then inflate the method
904 * correctly, put it in the cache, and the
905 * "wrong" inflation invocation still looks up
906 * the correctly inflated method.
908 * The hack above seems more stable and
911 m = mono_class_get_vtable_entry (vt->klass, slot);
914 vtable_slot = &(((gpointer*)vt) [slot]);
919 res = common_call_trampoline (regs, code, m, vt, vtable_slot, &error);
921 if (!mono_error_ok (&error)) {
922 mono_error_set_pending_exception (&error);
928 #ifndef DISABLE_REMOTING
930 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
932 MONO_REQ_GC_UNSAFE_MODE;
935 MonoGenericContext context = { NULL, NULL };
936 MonoMethod *imt_method, *declaring;
941 g_assert (m->is_generic);
944 declaring = mono_method_get_declaring_generic_method (m);
948 if (mono_class_is_ginst (m->klass))
949 context.class_inst = mono_class_get_generic_class (m->klass)->context.class_inst;
951 g_assert (!mono_class_is_gtd (m->klass));
953 imt_method = mono_arch_find_imt_method (regs, code);
954 if (imt_method->is_inflated)
955 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
956 m = mono_class_inflate_generic_method_checked (declaring, &context, &error);
957 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */;
958 m = mono_marshal_get_remoting_invoke_with_check (m);
960 addr = mono_jit_compile_method (m, &error);
961 if (!mono_error_ok (&error)) {
962 mono_error_set_pending_exception (&error);
972 * mono_aot_trampoline:
974 * This trampoline handles calls made from AOT code. We try to bypass the
975 * normal JIT compilation logic to avoid loading the metadata for the method.
977 #ifdef MONO_ARCH_AOT_SUPPORTED
979 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
982 MONO_REQ_GC_UNSAFE_MODE;
986 MonoMethod *method = NULL;
993 image = (MonoImage *)*(gpointer*)(gpointer)token_info;
994 token_info += sizeof (gpointer);
995 token = *(guint32*)(gpointer)token_info;
997 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token, &error);
999 mono_error_cleanup (&error);
1001 method = mono_get_method_checked (image, token, NULL, NULL, &error);
1003 g_error ("Could not load AOT trampoline due to %s", mono_error_get_message (&error));
1005 /* Use the generic code */
1006 return mono_magic_trampoline (regs, code, method, tramp);
1009 addr = mono_create_ftnptr (mono_domain_get (), addr);
1011 /* This is a normal call through a PLT entry */
1012 plt_entry = mono_aot_get_plt_entry (code);
1013 g_assert (plt_entry);
1015 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
1021 * mono_aot_plt_trampoline:
1023 * This trampoline handles calls made from AOT code through the PLT table.
1026 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
1029 MONO_REQ_GC_UNSAFE_MODE;
1031 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
1035 trampoline_calls ++;
1037 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code, &error);
1039 if (!mono_error_ok (&error)) {
1040 mono_error_set_pending_exception (&error);
1043 // FIXME: Error handling (how ?)
1052 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
1054 MONO_REQ_GC_UNSAFE_MODE;
1056 static gboolean inited = FALSE;
1057 static int num_lookups = 0;
1058 guint32 slot = GPOINTER_TO_UINT (data);
1059 mgreg_t *r = (mgreg_t*)regs;
1060 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
1061 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
1062 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1066 trampoline_calls ++;
1069 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
1076 res = mono_method_fill_runtime_generic_context ((MonoMethodRuntimeGenericContext *)arg, index, &error);
1078 res = mono_class_fill_runtime_generic_context ((MonoVTable *)arg, index, &error);
1079 if (!mono_error_ok (&error)) {
1080 mono_error_set_pending_exception (&error);
1087 * mono_delegate_trampoline:
1089 * This trampoline handles calls made to Delegate:Invoke ().
1090 * This is called once the first time a delegate is invoked, so it must be fast.
1093 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *arg, guint8* tramp)
1095 MONO_REQ_GC_UNSAFE_MODE;
1097 MonoDomain *domain = mono_domain_get ();
1098 MonoDelegate *delegate;
1101 MonoMethod *method = NULL;
1103 gboolean multicast, callvirt = FALSE, closed_over_null = FALSE;
1104 gboolean need_rgctx_tramp = FALSE;
1105 gboolean need_unbox_tramp = FALSE;
1106 gboolean enable_caching = TRUE;
1107 MonoDelegateTrampInfo *tramp_info = (MonoDelegateTrampInfo*)arg;
1108 MonoMethod *invoke = tramp_info->invoke;
1109 guint8 *impl_this = (guint8 *)tramp_info->impl_this;
1110 guint8 *impl_nothis = (guint8 *)tramp_info->impl_nothis;
1112 MonoMethodSignature *sig;
1113 gpointer addr, compiled_method;
1114 gboolean is_remote = FALSE;
1116 trampoline_calls ++;
1118 /* Obtain the delegate object according to the calling convention */
1119 delegate = (MonoDelegate *)mono_arch_get_this_arg_from_call (regs, code);
1120 g_assert (mono_class_has_parent (mono_object_class (delegate), mono_defaults.multicastdelegate_class));
1122 if (delegate->method) {
1123 method = delegate->method;
1126 * delegate->method_ptr == NULL means the delegate was initialized by
1127 * mini_delegate_ctor, while != NULL means it is initialized by
1128 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
1129 * (ctor_with_method () does this, but it doesn't store the wrapper back into
1130 * delegate->method).
1132 #ifndef DISABLE_REMOTING
1133 if (delegate->target && mono_object_is_transparent_proxy (delegate->target)) {
1136 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_class_get_com_object_class () &&
1137 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1139 method = mono_marshal_get_remoting_invoke (method);
1143 sig = tramp_info->sig;
1144 if (!(sig && method == tramp_info->method)) {
1146 sig = mono_method_signature_checked (method, &err);
1148 mono_error_set_pending_exception (&err);
1153 if (sig->hasthis && method->klass->valuetype) {
1154 gboolean need_unbox = TRUE;
1156 if (tramp_info->invoke_sig->param_count > sig->param_count && tramp_info->invoke_sig->params [0]->byref)
1161 need_unbox_tramp = TRUE;
1163 method = mono_marshal_get_unbox_wrapper (method);
1167 // If "delegate->method_ptr" is null mono_get_addr_from_ftnptr will fail if
1168 // ftnptrs are being used. "method" would end up null on archtitectures without
1169 // ftnptrs so we can just skip this.
1170 } else if (delegate->method_ptr) {
1171 ji = mono_jit_info_table_find (domain, (char *)mono_get_addr_from_ftnptr (delegate->method_ptr));
1173 method = jinfo_get_method (ji);
1177 sig = tramp_info->sig;
1178 if (!(sig && method == tramp_info->method)) {
1180 sig = mono_method_signature_checked (method, &err);
1182 mono_error_set_pending_exception (&err);
1187 callvirt = !delegate->target && sig->hasthis;
1189 closed_over_null = tramp_info->invoke_sig->param_count == sig->param_count;
1191 if (callvirt && !closed_over_null) {
1193 * The delegate needs to make a virtual call to the target method using its
1194 * first argument as the receiver. This is hard to support in full-aot, so
1195 * optimize it in some cases if possible.
1196 * If the target method is not virtual or is in a sealed class,
1197 * the vcall will call it directly.
1198 * If the call doesn't return a valuetype, then the vcall uses the same calling
1199 * convention as a normal call.
1201 if ((mono_class_is_sealed (method->klass) || !(method->flags & METHOD_ATTRIBUTE_VIRTUAL)) && !MONO_TYPE_ISSTRUCT (sig->ret)) {
1203 enable_caching = FALSE;
1207 if (delegate->target &&
1208 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1209 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1210 mono_class_is_abstract (method->klass)) {
1211 method = mono_object_get_virtual_method (delegate->target, method);
1212 enable_caching = FALSE;
1215 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1216 method = mono_marshal_get_synchronized_wrapper (method);
1218 if (method == tramp_info->method)
1219 need_rgctx_tramp = tramp_info->need_rgctx_tramp;
1220 else if (mono_method_needs_static_rgctx_invoke (method, FALSE))
1221 need_rgctx_tramp = TRUE;
1225 * If the called address is a trampoline, replace it with the compiled method so
1226 * further calls don't have to go through the trampoline.
1228 if (method && !callvirt) {
1229 /* Avoid the overhead of looking up an already compiled method if possible */
1230 if (enable_caching && delegate->method_code && *delegate->method_code) {
1231 delegate->method_ptr = *delegate->method_code;
1233 compiled_method = addr = mono_jit_compile_method (method, &error);
1234 if (!mono_error_ok (&error)) {
1235 mono_error_set_pending_exception (&error);
1238 addr = mini_add_method_trampoline (method, compiled_method, need_rgctx_tramp, need_unbox_tramp);
1239 delegate->method_ptr = addr;
1240 if (enable_caching && delegate->method_code)
1241 *delegate->method_code = (guint8 *)delegate->method_ptr;
1244 if (need_rgctx_tramp)
1245 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1248 /* Necessary for !code condition to fallback to slow path */
1251 multicast = ((MonoMulticastDelegate*)delegate)->delegates != NULL;
1252 if (!multicast && !callvirt) {
1253 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1254 /* Closed static delegate */
1257 code = delegate->target ? impl_this : impl_nothis;
1261 /* The general, unoptimized case */
1262 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1263 code = (guint8 *)mono_jit_compile_method (m, &error);
1264 if (!mono_error_ok (&error)) {
1265 mono_error_set_pending_exception (&error);
1268 code = (guint8 *)mini_add_method_trampoline (m, code, mono_method_needs_static_rgctx_invoke (m, FALSE), FALSE);
1271 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1272 if (enable_caching && !callvirt && tramp_info->method) {
1273 tramp_info->method_ptr = delegate->method_ptr;
1274 tramp_info->invoke_impl = delegate->invoke_impl;
1281 * mono_get_trampoline_func:
1283 * Return the C function which needs to be called by the generic trampoline of type
1287 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1289 switch (tramp_type) {
1290 case MONO_TRAMPOLINE_JIT:
1291 case MONO_TRAMPOLINE_JUMP:
1292 return mono_magic_trampoline;
1293 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1294 return mono_rgctx_lazy_fetch_trampoline;
1295 #ifdef MONO_ARCH_AOT_SUPPORTED
1296 case MONO_TRAMPOLINE_AOT:
1297 return mono_aot_trampoline;
1298 case MONO_TRAMPOLINE_AOT_PLT:
1299 return mono_aot_plt_trampoline;
1301 case MONO_TRAMPOLINE_DELEGATE:
1302 return mono_delegate_trampoline;
1303 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1304 return mono_altstack_restore_prot;
1305 #ifndef DISABLE_REMOTING
1306 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1307 return mono_generic_virtual_remoting_trampoline;
1309 case MONO_TRAMPOLINE_VCALL:
1310 return mono_vcall_trampoline;
1312 g_assert_not_reached ();
1318 create_trampoline_code (MonoTrampolineType tramp_type)
1320 MonoTrampInfo *info;
1323 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1324 mono_tramp_info_register (info, NULL);
1330 mono_trampolines_init (void)
1332 mono_os_mutex_init_recursive (&trampolines_mutex);
1337 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1338 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1339 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1340 #ifdef MONO_ARCH_AOT_SUPPORTED
1341 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1342 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1344 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1345 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1346 #ifndef DISABLE_REMOTING
1347 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1349 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1351 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1352 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1353 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1354 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1358 mono_trampolines_cleanup (void)
1360 if (rgctx_lazy_fetch_trampoline_hash)
1361 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1362 if (rgctx_lazy_fetch_trampoline_hash_addr)
1363 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1365 mono_os_mutex_destroy (&trampolines_mutex);
1369 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1371 g_assert (mono_trampoline_code [tramp_type]);
1373 return mono_trampoline_code [tramp_type];
1377 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1383 code = mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, &len);
1385 code = mono_arch_create_specific_trampoline (arg1, tramp_type, domain, &len);
1386 mono_lldb_save_specific_trampoline_info (arg1, tramp_type, domain, code, len);
1393 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper, MonoError *error)
1397 guint32 code_size = 0;
1401 #ifdef ENABLE_INTERPRETER
1402 if (mono_use_interpreter) {
1403 gpointer ret = mono_interp_create_trampoline (domain, method, error);
1404 if (!mono_error_ok (error))
1410 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1412 * We cannot recover the correct type of a shared generic
1413 * method from its native code address, so we use the
1414 * trampoline instead.
1415 * For synchronized methods, the trampoline adds the wrapper.
1417 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1420 if (mono_llvm_only) {
1421 code = mono_jit_compile_method (method, error);
1422 if (!mono_error_ok (error))
1427 mono_domain_lock (domain);
1428 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1429 mono_domain_unlock (domain);
1433 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1434 g_assert (code_size);
1436 ji = (MonoJitInfo *)mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1437 ji->code_start = code;
1438 ji->code_size = code_size;
1439 ji->d.method = method;
1442 * mono_delegate_ctor needs to find the method metadata from the
1443 * trampoline address, so we save it here.
1446 mono_jit_info_table_add (domain, ji);
1448 mono_domain_lock (domain);
1449 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1450 mono_domain_unlock (domain);
1452 return ji->code_start;
1456 method_not_found (void)
1458 g_assert_not_reached ();
1462 mono_create_jit_trampoline (MonoDomain *domain, MonoMethod *method, MonoError *error)
1468 if (mono_aot_only) {
1469 if (mono_llvm_only && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1470 method = mono_marshal_get_synchronized_wrapper (method);
1472 /* Avoid creating trampolines if possible */
1473 gpointer code = mono_jit_find_compiled_method (domain, method);
1477 if (mono_llvm_only) {
1478 if (method->wrapper_type == MONO_WRAPPER_PROXY_ISINST)
1479 /* These wrappers are not generated */
1480 return method_not_found;
1481 /* Methods are lazily initialized on first call, so this can't lead recursion */
1482 code = mono_jit_compile_method (method, error);
1483 if (!mono_error_ok (error))
1489 mono_domain_lock (domain);
1490 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1491 mono_domain_unlock (domain);
1495 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1497 mono_domain_lock (domain);
1498 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1499 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);
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 static gboolean inited = FALSE;
1606 static int num_trampolines = 0;
1607 MonoTrampInfo *info;
1609 gpointer tramp, ptr;
1611 mono_trampolines_lock ();
1612 if (rgctx_lazy_fetch_trampoline_hash)
1613 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1616 mono_trampolines_unlock ();
1620 if (mono_aot_only) {
1621 ptr = mono_aot_get_lazy_fetch_trampoline (offset);
1623 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1624 mono_tramp_info_register (info, NULL);
1625 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1628 mono_trampolines_lock ();
1629 if (!rgctx_lazy_fetch_trampoline_hash) {
1630 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1631 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1633 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1634 g_assert (offset != -1);
1635 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1636 mono_trampolines_unlock ();
1639 mono_counters_register ("RGCTX num lazy fetch trampolines",
1640 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1649 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1653 mono_trampolines_lock ();
1654 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1655 /* We store the real offset + 1 so we can detect when the lookup fails */
1656 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1664 mono_trampolines_unlock ();
1668 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1675 "restore_stack_prot",
1676 "generic_virtual_remoting",
1681 * mono_get_generic_trampoline_simple_name:
1685 mono_get_generic_trampoline_simple_name (MonoTrampolineType tramp_type)
1687 return tramp_names [tramp_type];
1691 * mono_get_generic_trampoline_name:
1693 * Returns a pointer to malloc-ed memory.
1696 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1698 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1702 * mono_get_rgctx_fetch_trampoline_name:
1704 * Returns a pointer to malloc-ed memory.
1707 mono_get_rgctx_fetch_trampoline_name (int slot)
1712 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1713 index = MONO_RGCTX_SLOT_INDEX (slot);
1715 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);
1719 * mini_get_single_step_trampoline:
1721 * Return a trampoline which calls debugger_agent_single_step_from_context ().
1724 mini_get_single_step_trampoline (void)
1726 static gpointer trampoline;
1731 if (mono_aot_only) {
1732 tramp = mono_aot_get_trampoline ("sdb_single_step_trampoline");
1734 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1735 MonoTrampInfo *info;
1736 tramp = mono_arch_create_sdb_trampoline (TRUE, &info, FALSE);
1737 mono_tramp_info_register (info, NULL);
1740 g_assert_not_reached ();
1743 mono_memory_barrier ();
1751 * mini_get_breakpoint_trampoline:
1753 * Return a trampoline which calls debugger_agent_breakpoint_from_context ().
1756 mini_get_breakpoint_trampoline (void)
1758 static gpointer trampoline;
1763 if (mono_aot_only) {
1764 tramp = mono_aot_get_trampoline ("sdb_breakpoint_trampoline");
1766 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1767 MonoTrampInfo *info;
1768 tramp = mono_arch_create_sdb_trampoline (FALSE, &info, FALSE);
1769 mono_tramp_info_register (info, NULL);
1772 g_assert_not_reached ();
1775 mono_memory_barrier ();