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 /* This is the vcall slot which gets called through the IMT trampoline */
571 vtable_slot_to_patch = vtable_slot;
575 * We found AOT compiled code for the method, skip the rest.
577 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
580 return mono_create_ftnptr (mono_domain_get (), addr);
588 * The virtual check is needed because is_generic_method_definition (m) could
589 * return TRUE for methods used in IMT calls too.
591 if (virtual_ && is_generic_method_definition (m)) {
592 MonoGenericContext context = { NULL, NULL };
593 MonoMethod *declaring;
596 declaring = mono_method_get_declaring_generic_method (m);
600 if (mono_class_is_ginst (m->klass))
601 context.class_inst = mono_class_get_generic_class (m->klass)->context.class_inst;
603 g_assert (!mono_class_is_gtd (m->klass));
605 generic_virtual = mono_arch_find_imt_method (regs, code);
606 g_assert (generic_virtual);
607 g_assert (generic_virtual->is_inflated);
608 context.method_inst = ((MonoMethodInflated*)generic_virtual)->context.method_inst;
610 m = mono_class_inflate_generic_method_checked (declaring, &context, error);
611 mono_error_assert_ok (error);
612 /* FIXME: only do this if the method is sharable */
613 need_rgctx_tramp = TRUE;
614 } else if ((context_used = mono_method_check_context_used (m))) {
615 MonoClass *klass = NULL;
616 MonoMethod *actual_method = NULL;
617 MonoVTable *vt = NULL;
618 MonoGenericInst *method_inst = NULL;
621 generic_shared = TRUE;
626 * The caller is gshared code, compute the actual method to call from M and this/rgctx.
628 if (m->is_inflated && mono_method_get_context (m)->method_inst) {
629 MonoMethodRuntimeGenericContext *mrgctx = (MonoMethodRuntimeGenericContext*)mono_arch_find_static_call_vtable (regs, code);
631 klass = mrgctx->class_vtable->klass;
632 method_inst = mrgctx->method_inst;
633 } else if ((m->flags & METHOD_ATTRIBUTE_STATIC) || m->klass->valuetype) {
634 MonoVTable *vtable = mono_arch_find_static_call_vtable (regs, code);
636 klass = vtable->klass;
638 MonoObject *this_argument = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
640 vt = this_argument->vtable;
641 vtable_slot = orig_vtable_slot;
643 g_assert (this_argument->vtable->klass->inited);
646 mono_class_setup_supertypes (this_argument->vtable->klass);
647 klass = this_argument->vtable->klass->supertypes [m->klass->idepth - 1];
651 g_assert (vtable_slot || klass);
654 int displacement = vtable_slot - ((gpointer*)vt);
656 g_assert_not_reached ();
658 g_assert (displacement > 0);
660 actual_method = vt->klass->vtable [displacement];
663 if (method_inst || m->wrapper_type) {
664 MonoGenericContext context = { NULL, NULL };
667 declaring = mono_method_get_declaring_generic_method (m);
671 if (mono_class_is_ginst (klass))
672 context.class_inst = mono_class_get_generic_class (klass)->context.class_inst;
673 else if (mono_class_is_gtd (klass))
674 context.class_inst = mono_class_get_generic_container (klass)->context.class_inst;
675 context.method_inst = method_inst;
677 actual_method = mono_class_inflate_generic_method_checked (declaring, &context, error);
678 mono_error_assert_ok (error);
680 actual_method = mono_class_get_method_generic (klass, m);
684 g_assert (actual_method);
685 g_assert (actual_method->klass == klass);
687 if (actual_method->is_inflated)
688 declaring = mono_method_get_declaring_generic_method (actual_method);
695 if (m->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) {
696 m = mono_marshal_get_synchronized_wrapper (m);
697 need_rgctx_tramp = FALSE;
700 /* Calls made through delegates on platforms without delegate trampolines */
701 if (!code && mono_method_needs_static_rgctx_invoke (m, FALSE))
702 need_rgctx_tramp = TRUE;
704 addr = compiled_method = mono_jit_compile_method (m, error);
708 if (generic_virtual || variant_iface) {
709 if (vt->klass->valuetype) /*FIXME is this required variant iface?*/
710 need_unbox_tramp = TRUE;
711 } else if (orig_vtable_slot) {
712 if (m->klass->valuetype)
713 need_unbox_tramp = TRUE;
716 addr = mini_add_method_trampoline (m, compiled_method, need_rgctx_tramp, need_unbox_tramp);
718 if (generic_virtual || variant_iface) {
719 MonoMethod *target = generic_virtual ? generic_virtual : variant_iface;
721 vtable_slot = orig_vtable_slot;
722 g_assert (vtable_slot);
724 mono_method_add_generic_virtual_invocation (mono_domain_get (),
731 /* the method was jumped to */
733 MonoDomain *domain = mono_domain_get ();
735 /* Patch the got entries pointing to this method */
737 * We do this here instead of in mono_codegen () to cover the case when m
738 * was loaded from an aot image.
740 if (domain_jit_info (domain)->jump_target_got_slot_hash) {
743 mono_domain_lock (domain);
744 list = (GSList *)g_hash_table_lookup (domain_jit_info (domain)->jump_target_got_slot_hash, m);
746 for (tmp = list; tmp; tmp = tmp->next) {
747 gpointer *got_slot = (gpointer *)tmp->data;
750 g_hash_table_remove (domain_jit_info (domain)->jump_target_got_slot_hash, m);
753 mono_domain_unlock (domain);
759 vtable_slot = orig_vtable_slot;
762 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))) {
763 g_assert (*vtable_slot_to_patch);
764 *vtable_slot_to_patch = mono_get_addr_from_ftnptr (addr);
767 guint8 *plt_entry = mono_aot_get_plt_entry (code);
768 gboolean no_patch = FALSE;
769 MonoJitInfo *target_ji;
772 if (generic_shared) {
774 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
776 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
778 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
783 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
785 if (generic_shared) {
786 if (m->wrapper_type != MONO_WRAPPER_NONE)
787 m = mono_marshal_method_from_wrapper (m);
788 //g_assert (mono_method_is_generic_sharable (m, FALSE));
791 /* Patch calling code */
793 mini_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (compiled_method), NULL);
795 ji = mini_jit_info_table_find (mono_domain_get (), (char*)code, NULL);
797 if (ji && target_ji && generic_shared && ji->has_generic_jit_info && !target_ji->has_generic_jit_info) {
799 * Can't patch the call as the caller is gshared, but the callee is not. Happens when
800 * generic sharing fails.
801 * FIXME: Performance problem.
805 #if LLVM_API_VERSION > 100
806 /* LLVM code doesn't make direct calls */
807 if (ji && ji->from_llvm)
810 if (!no_patch && mono_method_same_domain (ji, target_ji))
811 mono_arch_patch_callsite ((guint8 *)ji->code_start, code, (guint8 *)addr);
819 * mono_magic_trampoline:
821 * This trampoline handles normal calls from JITted code.
824 mono_magic_trampoline (mgreg_t *regs, guint8 *code, gpointer arg, guint8* tramp)
829 MONO_REQ_GC_UNSAFE_MODE;
831 g_assert (mono_thread_is_gc_unsafe_mode ());
835 res = common_call_trampoline (regs, code, (MonoMethod *)arg, NULL, NULL, &error);
836 if (!is_ok (&error)) {
837 mono_error_set_pending_exception (&error);
845 * mono_vcall_trampoline:
847 * This trampoline handles virtual calls.
850 mono_vcall_trampoline (mgreg_t *regs, guint8 *code, int slot, guint8 *tramp)
852 MONO_REQ_GC_UNSAFE_MODE;
854 MonoObject *this_arg;
856 gpointer *vtable_slot;
859 gpointer addr, res = NULL;
864 * We need to obtain the following pieces of information:
865 * - the method which needs to be compiled.
867 * We use one vtable trampoline per vtable slot index, so we need only the vtable,
868 * the other two can be computed from the vtable + the slot index.
872 * Obtain the vtable from the 'this' arg.
874 this_arg = (MonoObject *)mono_arch_get_this_arg_from_call (regs, code);
877 vt = this_arg->vtable;
880 /* Normal virtual call */
881 vtable_slot = &(vt->vtable [slot]);
883 /* Avoid loading metadata or creating a generic vtable if possible */
884 addr = mono_aot_get_method_from_vt_slot (mono_domain_get (), vt, slot, &error);
887 if (addr && !vt->klass->valuetype) {
888 if (mono_domain_owns_vtable_slot (mono_domain_get (), vtable_slot))
891 return mono_create_ftnptr (mono_domain_get (), addr);
896 * is_generic_method_definition() above) also
897 * goes away if we do a
898 * mono_class_setup_vtable (vt->klass) here,
899 * because we then inflate the method
900 * correctly, put it in the cache, and the
901 * "wrong" inflation invocation still looks up
902 * the correctly inflated method.
904 * The hack above seems more stable and
907 m = mono_class_get_vtable_entry (vt->klass, slot);
910 vtable_slot = &(((gpointer*)vt) [slot]);
915 res = common_call_trampoline (regs, code, m, vt, vtable_slot, &error);
917 if (!mono_error_ok (&error)) {
918 mono_error_set_pending_exception (&error);
924 #ifndef DISABLE_REMOTING
926 mono_generic_virtual_remoting_trampoline (mgreg_t *regs, guint8 *code, MonoMethod *m, guint8 *tramp)
928 MONO_REQ_GC_UNSAFE_MODE;
931 MonoGenericContext context = { NULL, NULL };
932 MonoMethod *imt_method, *declaring;
937 g_assert (m->is_generic);
940 declaring = mono_method_get_declaring_generic_method (m);
944 if (mono_class_is_ginst (m->klass))
945 context.class_inst = mono_class_get_generic_class (m->klass)->context.class_inst;
947 g_assert (!mono_class_is_gtd (m->klass));
949 imt_method = mono_arch_find_imt_method (regs, code);
950 if (imt_method->is_inflated)
951 context.method_inst = ((MonoMethodInflated*)imt_method)->context.method_inst;
952 m = mono_class_inflate_generic_method_checked (declaring, &context, &error);
953 g_assert (mono_error_ok (&error)); /* FIXME don't swallow the error */;
954 m = mono_marshal_get_remoting_invoke_with_check (m);
956 addr = mono_jit_compile_method (m, &error);
957 if (!mono_error_ok (&error)) {
958 mono_error_set_pending_exception (&error);
968 * mono_aot_trampoline:
970 * This trampoline handles calls made from AOT code. We try to bypass the
971 * normal JIT compilation logic to avoid loading the metadata for the method.
973 #ifdef MONO_ARCH_AOT_SUPPORTED
975 mono_aot_trampoline (mgreg_t *regs, guint8 *code, guint8 *token_info,
978 MONO_REQ_GC_UNSAFE_MODE;
982 MonoMethod *method = NULL;
989 image = (MonoImage *)*(gpointer*)(gpointer)token_info;
990 token_info += sizeof (gpointer);
991 token = *(guint32*)(gpointer)token_info;
993 addr = mono_aot_get_method_from_token (mono_domain_get (), image, token, &error);
995 mono_error_cleanup (&error);
997 method = mono_get_method_checked (image, token, NULL, NULL, &error);
999 g_error ("Could not load AOT trampoline due to %s", mono_error_get_message (&error));
1001 /* Use the generic code */
1002 return mono_magic_trampoline (regs, code, method, tramp);
1005 addr = mono_create_ftnptr (mono_domain_get (), addr);
1007 /* This is a normal call through a PLT entry */
1008 plt_entry = mono_aot_get_plt_entry (code);
1009 g_assert (plt_entry);
1011 mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, (guint8 *)addr);
1017 * mono_aot_plt_trampoline:
1019 * This trampoline handles calls made from AOT code through the PLT table.
1022 mono_aot_plt_trampoline (mgreg_t *regs, guint8 *code, guint8 *aot_module,
1025 MONO_REQ_GC_UNSAFE_MODE;
1027 guint32 plt_info_offset = mono_aot_get_plt_info_offset (regs, code);
1031 trampoline_calls ++;
1033 res = mono_aot_plt_resolve (aot_module, plt_info_offset, code, &error);
1035 if (!mono_error_ok (&error)) {
1036 mono_error_set_pending_exception (&error);
1039 // FIXME: Error handling (how ?)
1048 mono_rgctx_lazy_fetch_trampoline (mgreg_t *regs, guint8 *code, gpointer data, guint8 *tramp)
1050 MONO_REQ_GC_UNSAFE_MODE;
1052 static gboolean inited = FALSE;
1053 static int num_lookups = 0;
1054 guint32 slot = GPOINTER_TO_UINT (data);
1055 mgreg_t *r = (mgreg_t*)regs;
1056 gpointer arg = (gpointer)(gssize)r [MONO_ARCH_VTABLE_REG];
1057 guint32 index = MONO_RGCTX_SLOT_INDEX (slot);
1058 gboolean mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1062 trampoline_calls ++;
1065 mono_counters_register ("RGCTX unmanaged lookups", MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_lookups);
1072 res = mono_method_fill_runtime_generic_context ((MonoMethodRuntimeGenericContext *)arg, index, &error);
1074 res = mono_class_fill_runtime_generic_context ((MonoVTable *)arg, index, &error);
1075 if (!mono_error_ok (&error)) {
1076 mono_error_set_pending_exception (&error);
1083 * mono_delegate_trampoline:
1085 * This trampoline handles calls made to Delegate:Invoke ().
1086 * This is called once the first time a delegate is invoked, so it must be fast.
1089 mono_delegate_trampoline (mgreg_t *regs, guint8 *code, gpointer *arg, guint8* tramp)
1091 MONO_REQ_GC_UNSAFE_MODE;
1093 MonoDomain *domain = mono_domain_get ();
1094 MonoDelegate *delegate;
1097 MonoMethod *method = NULL;
1099 gboolean multicast, callvirt = FALSE, closed_over_null = FALSE;
1100 gboolean need_rgctx_tramp = FALSE;
1101 gboolean need_unbox_tramp = FALSE;
1102 gboolean enable_caching = TRUE;
1103 MonoDelegateTrampInfo *tramp_info = (MonoDelegateTrampInfo*)arg;
1104 MonoMethod *invoke = tramp_info->invoke;
1105 guint8 *impl_this = (guint8 *)tramp_info->impl_this;
1106 guint8 *impl_nothis = (guint8 *)tramp_info->impl_nothis;
1108 MonoMethodSignature *sig;
1109 gpointer addr, compiled_method;
1110 gboolean is_remote = FALSE;
1112 trampoline_calls ++;
1114 /* Obtain the delegate object according to the calling convention */
1115 delegate = (MonoDelegate *)mono_arch_get_this_arg_from_call (regs, code);
1116 g_assert (mono_class_has_parent (mono_object_class (delegate), mono_defaults.multicastdelegate_class));
1118 if (delegate->method) {
1119 method = delegate->method;
1122 * delegate->method_ptr == NULL means the delegate was initialized by
1123 * mini_delegate_ctor, while != NULL means it is initialized by
1124 * mono_delegate_ctor_with_method (). In both cases, we need to add wrappers
1125 * (ctor_with_method () does this, but it doesn't store the wrapper back into
1126 * delegate->method).
1128 #ifndef DISABLE_REMOTING
1129 if (delegate->target && mono_object_is_transparent_proxy (delegate->target)) {
1132 if (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class != mono_class_get_com_object_class () &&
1133 !mono_class_is_com_object (((MonoTransparentProxy *)delegate->target)->remote_class->proxy_class))
1135 method = mono_marshal_get_remoting_invoke (method);
1139 sig = tramp_info->sig;
1140 if (!(sig && method == tramp_info->method)) {
1142 sig = mono_method_signature_checked (method, &err);
1144 mono_error_set_pending_exception (&err);
1149 if (sig->hasthis && method->klass->valuetype) {
1150 gboolean need_unbox = TRUE;
1152 if (tramp_info->invoke_sig->param_count > sig->param_count && tramp_info->invoke_sig->params [0]->byref)
1157 need_unbox_tramp = TRUE;
1159 method = mono_marshal_get_unbox_wrapper (method);
1163 // If "delegate->method_ptr" is null mono_get_addr_from_ftnptr will fail if
1164 // ftnptrs are being used. "method" would end up null on archtitectures without
1165 // ftnptrs so we can just skip this.
1166 } else if (delegate->method_ptr) {
1167 ji = mono_jit_info_table_find (domain, (char *)mono_get_addr_from_ftnptr (delegate->method_ptr));
1169 method = jinfo_get_method (ji);
1173 sig = tramp_info->sig;
1174 if (!(sig && method == tramp_info->method)) {
1176 sig = mono_method_signature_checked (method, &err);
1178 mono_error_set_pending_exception (&err);
1183 callvirt = !delegate->target && sig->hasthis;
1185 closed_over_null = tramp_info->invoke_sig->param_count == sig->param_count;
1187 if (callvirt && !closed_over_null) {
1189 * The delegate needs to make a virtual call to the target method using its
1190 * first argument as the receiver. This is hard to support in full-aot, so
1191 * optimize it in some cases if possible.
1192 * If the target method is not virtual or is in a sealed class,
1193 * the vcall will call it directly.
1194 * If the call doesn't return a valuetype, then the vcall uses the same calling
1195 * convention as a normal call.
1197 if ((mono_class_is_sealed (method->klass) || !(method->flags & METHOD_ATTRIBUTE_VIRTUAL)) && !MONO_TYPE_ISSTRUCT (sig->ret)) {
1199 enable_caching = FALSE;
1203 if (delegate->target &&
1204 method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
1205 method->flags & METHOD_ATTRIBUTE_ABSTRACT &&
1206 mono_class_is_abstract (method->klass)) {
1207 method = mono_object_get_virtual_method (delegate->target, method);
1208 enable_caching = FALSE;
1211 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1212 method = mono_marshal_get_synchronized_wrapper (method);
1214 if (method == tramp_info->method)
1215 need_rgctx_tramp = tramp_info->need_rgctx_tramp;
1216 else if (mono_method_needs_static_rgctx_invoke (method, FALSE))
1217 need_rgctx_tramp = TRUE;
1221 * If the called address is a trampoline, replace it with the compiled method so
1222 * further calls don't have to go through the trampoline.
1224 if (method && !callvirt) {
1225 /* Avoid the overhead of looking up an already compiled method if possible */
1226 if (enable_caching && delegate->method_code && *delegate->method_code) {
1227 delegate->method_ptr = *delegate->method_code;
1229 compiled_method = addr = mono_jit_compile_method (method, &error);
1230 if (!mono_error_ok (&error)) {
1231 mono_error_set_pending_exception (&error);
1234 addr = mini_add_method_trampoline (method, compiled_method, need_rgctx_tramp, need_unbox_tramp);
1235 delegate->method_ptr = addr;
1236 if (enable_caching && delegate->method_code)
1237 *delegate->method_code = (guint8 *)delegate->method_ptr;
1240 if (need_rgctx_tramp)
1241 delegate->method_ptr = mono_create_static_rgctx_trampoline (method, delegate->method_ptr);
1244 /* Necessary for !code condition to fallback to slow path */
1247 multicast = ((MonoMulticastDelegate*)delegate)->delegates != NULL;
1248 if (!multicast && !callvirt) {
1249 if (method && (method->flags & METHOD_ATTRIBUTE_STATIC) && mono_method_signature (method)->param_count == mono_method_signature (invoke)->param_count + 1)
1250 /* Closed static delegate */
1253 code = delegate->target ? impl_this : impl_nothis;
1257 /* The general, unoptimized case */
1258 m = mono_marshal_get_delegate_invoke (invoke, delegate);
1259 code = (guint8 *)mono_jit_compile_method (m, &error);
1260 if (!mono_error_ok (&error)) {
1261 mono_error_set_pending_exception (&error);
1264 code = (guint8 *)mini_add_method_trampoline (m, code, mono_method_needs_static_rgctx_invoke (m, FALSE), FALSE);
1267 delegate->invoke_impl = mono_get_addr_from_ftnptr (code);
1268 if (enable_caching && !callvirt && tramp_info->method) {
1269 tramp_info->method_ptr = delegate->method_ptr;
1270 tramp_info->invoke_impl = delegate->invoke_impl;
1277 * mono_get_trampoline_func:
1279 * Return the C function which needs to be called by the generic trampoline of type
1283 mono_get_trampoline_func (MonoTrampolineType tramp_type)
1285 switch (tramp_type) {
1286 case MONO_TRAMPOLINE_JIT:
1287 case MONO_TRAMPOLINE_JUMP:
1288 return mono_magic_trampoline;
1289 case MONO_TRAMPOLINE_RGCTX_LAZY_FETCH:
1290 return mono_rgctx_lazy_fetch_trampoline;
1291 #ifdef MONO_ARCH_AOT_SUPPORTED
1292 case MONO_TRAMPOLINE_AOT:
1293 return mono_aot_trampoline;
1294 case MONO_TRAMPOLINE_AOT_PLT:
1295 return mono_aot_plt_trampoline;
1297 case MONO_TRAMPOLINE_DELEGATE:
1298 return mono_delegate_trampoline;
1299 case MONO_TRAMPOLINE_RESTORE_STACK_PROT:
1300 return mono_altstack_restore_prot;
1301 #ifndef DISABLE_REMOTING
1302 case MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING:
1303 return mono_generic_virtual_remoting_trampoline;
1305 case MONO_TRAMPOLINE_VCALL:
1306 return mono_vcall_trampoline;
1308 g_assert_not_reached ();
1314 create_trampoline_code (MonoTrampolineType tramp_type)
1316 MonoTrampInfo *info;
1319 code = mono_arch_create_generic_trampoline (tramp_type, &info, FALSE);
1320 mono_tramp_info_register (info, NULL);
1326 mono_trampolines_init (void)
1328 mono_os_mutex_init_recursive (&trampolines_mutex);
1333 mono_trampoline_code [MONO_TRAMPOLINE_JIT] = create_trampoline_code (MONO_TRAMPOLINE_JIT);
1334 mono_trampoline_code [MONO_TRAMPOLINE_JUMP] = create_trampoline_code (MONO_TRAMPOLINE_JUMP);
1335 mono_trampoline_code [MONO_TRAMPOLINE_RGCTX_LAZY_FETCH] = create_trampoline_code (MONO_TRAMPOLINE_RGCTX_LAZY_FETCH);
1336 #ifdef MONO_ARCH_AOT_SUPPORTED
1337 mono_trampoline_code [MONO_TRAMPOLINE_AOT] = create_trampoline_code (MONO_TRAMPOLINE_AOT);
1338 mono_trampoline_code [MONO_TRAMPOLINE_AOT_PLT] = create_trampoline_code (MONO_TRAMPOLINE_AOT_PLT);
1340 mono_trampoline_code [MONO_TRAMPOLINE_DELEGATE] = create_trampoline_code (MONO_TRAMPOLINE_DELEGATE);
1341 mono_trampoline_code [MONO_TRAMPOLINE_RESTORE_STACK_PROT] = create_trampoline_code (MONO_TRAMPOLINE_RESTORE_STACK_PROT);
1342 #ifndef DISABLE_REMOTING
1343 mono_trampoline_code [MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING] = create_trampoline_code (MONO_TRAMPOLINE_GENERIC_VIRTUAL_REMOTING);
1345 mono_trampoline_code [MONO_TRAMPOLINE_VCALL] = create_trampoline_code (MONO_TRAMPOLINE_VCALL);
1347 mono_counters_register ("Calls to trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &trampoline_calls);
1348 mono_counters_register ("JIT trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jit_trampolines);
1349 mono_counters_register ("Unbox trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &unbox_trampolines);
1350 mono_counters_register ("Static rgctx trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &static_rgctx_trampolines);
1354 mono_trampolines_cleanup (void)
1356 if (rgctx_lazy_fetch_trampoline_hash)
1357 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash);
1358 if (rgctx_lazy_fetch_trampoline_hash_addr)
1359 g_hash_table_destroy (rgctx_lazy_fetch_trampoline_hash_addr);
1361 mono_os_mutex_destroy (&trampolines_mutex);
1365 mono_get_trampoline_code (MonoTrampolineType tramp_type)
1367 g_assert (mono_trampoline_code [tramp_type]);
1369 return mono_trampoline_code [tramp_type];
1373 mono_create_specific_trampoline (gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len)
1379 code = mono_aot_create_specific_trampoline (mono_defaults.corlib, arg1, tramp_type, domain, &len);
1381 code = mono_arch_create_specific_trampoline (arg1, tramp_type, domain, &len);
1382 mono_lldb_save_specific_trampoline_info (arg1, tramp_type, domain, code, len);
1389 mono_create_jump_trampoline (MonoDomain *domain, MonoMethod *method, gboolean add_sync_wrapper, MonoError *error)
1393 guint32 code_size = 0;
1397 #ifdef ENABLE_INTERPRETER
1398 if (mono_use_interpreter) {
1399 gpointer ret = mono_interp_create_trampoline (domain, method, error);
1400 if (!mono_error_ok (error))
1406 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
1408 * We cannot recover the correct type of a shared generic
1409 * method from its native code address, so we use the
1410 * trampoline instead.
1411 * For synchronized methods, the trampoline adds the wrapper.
1413 if (code && !ji->has_generic_jit_info && !(method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1416 if (mono_llvm_only) {
1417 code = mono_jit_compile_method (method, error);
1418 if (!mono_error_ok (error))
1423 mono_domain_lock (domain);
1424 code = g_hash_table_lookup (domain_jit_info (domain)->jump_trampoline_hash, method);
1425 mono_domain_unlock (domain);
1429 code = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JUMP, mono_domain_get (), &code_size);
1430 g_assert (code_size);
1432 ji = (MonoJitInfo *)mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
1433 ji->code_start = code;
1434 ji->code_size = code_size;
1435 ji->d.method = method;
1438 * mono_delegate_ctor needs to find the method metadata from the
1439 * trampoline address, so we save it here.
1442 mono_jit_info_table_add (domain, ji);
1444 mono_domain_lock (domain);
1445 g_hash_table_insert (domain_jit_info (domain)->jump_trampoline_hash, method, ji->code_start);
1446 mono_domain_unlock (domain);
1448 return ji->code_start;
1452 method_not_found (void)
1454 g_assert_not_reached ();
1458 mono_create_jit_trampoline (MonoDomain *domain, MonoMethod *method, MonoError *error)
1464 if (mono_aot_only) {
1465 if (mono_llvm_only && method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)
1466 method = mono_marshal_get_synchronized_wrapper (method);
1468 /* Avoid creating trampolines if possible */
1469 gpointer code = mono_jit_find_compiled_method (domain, method);
1473 if (mono_llvm_only) {
1474 if (method->wrapper_type == MONO_WRAPPER_PROXY_ISINST)
1475 /* These wrappers are not generated */
1476 return method_not_found;
1477 /* Methods are lazily initialized on first call, so this can't lead recursion */
1478 code = mono_jit_compile_method (method, error);
1479 if (!mono_error_ok (error))
1485 mono_domain_lock (domain);
1486 tramp = g_hash_table_lookup (domain_jit_info (domain)->jit_trampoline_hash, method);
1487 mono_domain_unlock (domain);
1491 tramp = mono_create_specific_trampoline (method, MONO_TRAMPOLINE_JIT, domain, NULL);
1493 mono_domain_lock (domain);
1494 g_hash_table_insert (domain_jit_info (domain)->jit_trampoline_hash, method, tramp);
1495 mono_domain_unlock (domain);
1503 mono_create_jit_trampoline_from_token (MonoImage *image, guint32 token)
1507 MonoDomain *domain = mono_domain_get ();
1508 guint8 *buf, *start;
1510 buf = start = (guint8 *)mono_domain_alloc0 (domain, 2 * sizeof (gpointer));
1512 *(gpointer*)(gpointer)buf = image;
1513 buf += sizeof (gpointer);
1514 *(guint32*)(gpointer)buf = token;
1516 tramp = mono_create_specific_trampoline (start, MONO_TRAMPOLINE_AOT, domain, NULL);
1525 * mono_create_delegate_trampoline_info:
1527 * Create a trampoline info structure for the KLASS+METHOD pair.
1529 MonoDelegateTrampInfo*
1530 mono_create_delegate_trampoline_info (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1534 MonoDelegateTrampInfo *tramp_info;
1535 MonoClassMethodPair pair, *dpair;
1536 guint32 code_size = 0;
1539 pair.method = method;
1540 mono_domain_lock (domain);
1541 tramp_info = (MonoDelegateTrampInfo *)g_hash_table_lookup (domain_jit_info (domain)->delegate_trampoline_hash, &pair);
1542 mono_domain_unlock (domain);
1546 invoke = mono_get_delegate_invoke (klass);
1549 tramp_info = (MonoDelegateTrampInfo *)mono_domain_alloc0 (domain, sizeof (MonoDelegateTrampInfo));
1550 tramp_info->invoke = invoke;
1551 tramp_info->invoke_sig = mono_method_signature (invoke);
1552 tramp_info->impl_this = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), TRUE);
1553 tramp_info->impl_nothis = mono_arch_get_delegate_invoke_impl (mono_method_signature (invoke), FALSE);
1554 tramp_info->method = method;
1556 error_init (&error);
1557 tramp_info->sig = mono_method_signature_checked (method, &error);
1558 tramp_info->need_rgctx_tramp = mono_method_needs_static_rgctx_invoke (method, FALSE);
1560 tramp_info->invoke_impl = mono_create_specific_trampoline (tramp_info, MONO_TRAMPOLINE_DELEGATE, domain, &code_size);
1561 g_assert (code_size);
1563 dpair = (MonoClassMethodPair *)mono_domain_alloc0 (domain, sizeof (MonoClassMethodPair));
1564 memcpy (dpair, &pair, sizeof (MonoClassMethodPair));
1566 /* store trampoline address */
1567 mono_domain_lock (domain);
1568 g_hash_table_insert (domain_jit_info (domain)->delegate_trampoline_hash, dpair, tramp_info);
1569 mono_domain_unlock (domain);
1575 no_delegate_trampoline (void)
1577 g_assert_not_reached ();
1581 mono_create_delegate_trampoline (MonoDomain *domain, MonoClass *klass)
1583 if (mono_llvm_only || mono_use_interpreter)
1584 return no_delegate_trampoline;
1586 return mono_create_delegate_trampoline_info (domain, klass, NULL)->invoke_impl;
1590 mono_create_delegate_virtual_trampoline (MonoDomain *domain, MonoClass *klass, MonoMethod *method)
1592 MonoMethod *invoke = mono_get_delegate_invoke (klass);
1595 return mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), method);
1599 mono_create_rgctx_lazy_fetch_trampoline (guint32 offset)
1601 static gboolean inited = FALSE;
1602 static int num_trampolines = 0;
1603 MonoTrampInfo *info;
1605 gpointer tramp, ptr;
1607 mono_trampolines_lock ();
1608 if (rgctx_lazy_fetch_trampoline_hash)
1609 tramp = g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset));
1612 mono_trampolines_unlock ();
1616 if (mono_aot_only) {
1617 ptr = mono_aot_get_lazy_fetch_trampoline (offset);
1619 tramp = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, FALSE);
1620 mono_tramp_info_register (info, NULL);
1621 ptr = mono_create_ftnptr (mono_get_root_domain (), tramp);
1624 mono_trampolines_lock ();
1625 if (!rgctx_lazy_fetch_trampoline_hash) {
1626 rgctx_lazy_fetch_trampoline_hash = g_hash_table_new (NULL, NULL);
1627 rgctx_lazy_fetch_trampoline_hash_addr = g_hash_table_new (NULL, NULL);
1629 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash, GUINT_TO_POINTER (offset), ptr);
1630 g_assert (offset != -1);
1631 g_hash_table_insert (rgctx_lazy_fetch_trampoline_hash_addr, ptr, GUINT_TO_POINTER (offset + 1));
1632 mono_trampolines_unlock ();
1635 mono_counters_register ("RGCTX num lazy fetch trampolines",
1636 MONO_COUNTER_GENERICS | MONO_COUNTER_INT, &num_trampolines);
1645 mono_find_rgctx_lazy_fetch_trampoline_by_addr (gconstpointer addr)
1649 mono_trampolines_lock ();
1650 if (rgctx_lazy_fetch_trampoline_hash_addr) {
1651 /* We store the real offset + 1 so we can detect when the lookup fails */
1652 offset = GPOINTER_TO_INT (g_hash_table_lookup (rgctx_lazy_fetch_trampoline_hash_addr, addr));
1660 mono_trampolines_unlock ();
1664 static const char*tramp_names [MONO_TRAMPOLINE_NUM] = {
1671 "restore_stack_prot",
1672 "generic_virtual_remoting",
1677 * mono_get_generic_trampoline_simple_name:
1681 mono_get_generic_trampoline_simple_name (MonoTrampolineType tramp_type)
1683 return tramp_names [tramp_type];
1687 * mono_get_generic_trampoline_name:
1689 * Returns a pointer to malloc-ed memory.
1692 mono_get_generic_trampoline_name (MonoTrampolineType tramp_type)
1694 return g_strdup_printf ("generic_trampoline_%s", tramp_names [tramp_type]);
1698 * mono_get_rgctx_fetch_trampoline_name:
1700 * Returns a pointer to malloc-ed memory.
1703 mono_get_rgctx_fetch_trampoline_name (int slot)
1708 mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
1709 index = MONO_RGCTX_SLOT_INDEX (slot);
1711 return g_strdup_printf ("rgctx_fetch_trampoline_%s_%d", mrgctx ? "mrgctx" : "rgctx", index);
1715 * mini_get_single_step_trampoline:
1717 * Return a trampoline which calls debugger_agent_single_step_from_context ().
1720 mini_get_single_step_trampoline (void)
1722 static gpointer trampoline;
1727 if (mono_aot_only) {
1728 tramp = mono_aot_get_trampoline ("sdb_single_step_trampoline");
1730 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1731 MonoTrampInfo *info;
1732 tramp = mono_arch_create_sdb_trampoline (TRUE, &info, FALSE);
1733 mono_tramp_info_register (info, NULL);
1736 g_assert_not_reached ();
1739 mono_memory_barrier ();
1747 * mini_get_breakpoint_trampoline:
1749 * Return a trampoline which calls debugger_agent_breakpoint_from_context ().
1752 mini_get_breakpoint_trampoline (void)
1754 static gpointer trampoline;
1759 if (mono_aot_only) {
1760 tramp = mono_aot_get_trampoline ("sdb_breakpoint_trampoline");
1762 #ifdef MONO_ARCH_HAVE_SDB_TRAMPOLINES
1763 MonoTrampInfo *info;
1764 tramp = mono_arch_create_sdb_trampoline (FALSE, &info, FALSE);
1765 mono_tramp_info_register (info, NULL);
1768 g_assert_not_reached ();
1771 mono_memory_barrier ();