/** * \file * mono Ahead of Time compiler * * Author: * Dietmar Maurer (dietmar@ximian.com) * Zoltan Varga (vargaz@gmail.com) * * (C) 2002 Ximian, Inc. * Copyright 2003-2011 Novell, Inc. * Copyright 2011 Xamarin, Inc. * Licensed under the MIT license. See LICENSE file in the project root for full license information. */ #include "config.h" #include #ifdef HAVE_UNISTD_H #include #endif #include #include #ifdef HAVE_SYS_MMAN_H #include #endif #if HOST_WIN32 #include #include #endif #ifdef HAVE_EXECINFO_H #include #endif #include #include #ifdef HAVE_SYS_WAIT_H #include /* for WIFEXITED, WEXITSTATUS */ #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mini.h" #include "seq-points.h" #include "version.h" #include "debugger-agent.h" #include "aot-compiler.h" #include "jit-icalls.h" #ifndef DISABLE_AOT #ifdef TARGET_OSX #define ENABLE_AOT_CACHE #endif /* Number of got entries shared between the JIT and LLVM GOT */ #define N_COMMON_GOT_ENTRIES 10 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1)) #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1))) #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1)) typedef struct { int method_index; MonoJitInfo *jinfo; } JitInfoMap; typedef struct MonoAotModule { char *aot_name; /* Pointer to the Global Offset Table */ gpointer *got; gpointer *llvm_got; gpointer *shared_got; GHashTable *name_cache; GHashTable *extra_methods; /* Maps methods to their code */ GHashTable *method_to_code; /* Maps pointers into the method info to the methods themselves */ GHashTable *method_ref_to_method; MonoAssemblyName *image_names; char **image_guids; MonoAssembly *assembly; MonoImage **image_table; guint32 image_table_len; gboolean out_of_date; gboolean plt_inited; gboolean got_initializing; guint8 *mem_begin; guint8 *mem_end; guint8 *jit_code_start; guint8 *jit_code_end; guint8 *llvm_code_start; guint8 *llvm_code_end; guint8 *plt; guint8 *plt_end; guint8 *blob; /* Maps method indexes to their code */ gpointer *methods; /* Sorted array of method addresses */ gpointer *sorted_methods; /* Method indexes for each method in sorted_methods */ int *sorted_method_indexes; /* The length of the two tables above */ int sorted_methods_len; guint32 *method_info_offsets; guint32 *ex_info_offsets; guint32 *class_info_offsets; guint32 *got_info_offsets; guint32 *llvm_got_info_offsets; guint32 *methods_loaded; guint16 *class_name_table; guint32 *extra_method_table; guint32 *extra_method_info_offsets; guint32 *unbox_trampolines; guint32 *unbox_trampolines_end; guint32 *unbox_trampoline_addresses; guint8 *unwind_info; /* Points to the mono EH data created by LLVM */ guint8 *mono_eh_frame; /* Points to the data tables if MONO_AOT_FILE_FLAG_SEPARATE_DATA is set */ gpointer tables [MONO_AOT_TABLE_NUM]; /* Points to the trampolines */ guint8 *trampolines [MONO_AOT_TRAMP_NUM]; /* The first unused trampoline of each kind */ guint32 trampoline_index [MONO_AOT_TRAMP_NUM]; gboolean use_page_trampolines; MonoAotFileInfo info; gpointer *globals; MonoDl *sofile; JitInfoMap *async_jit_info_table; mono_mutex_t mutex; } MonoAotModule; typedef struct { void *next; unsigned char *trampolines; unsigned char *trampolines_end; } TrampolinePage; static GHashTable *aot_modules; #define mono_aot_lock() mono_os_mutex_lock (&aot_mutex) #define mono_aot_unlock() mono_os_mutex_unlock (&aot_mutex) static mono_mutex_t aot_mutex; /* * Maps assembly names to the mono_aot_module__info symbols in the * AOT modules registered by mono_aot_register_module (). */ static GHashTable *static_aot_modules; /* * Maps MonoJitInfo* to the aot module they belong to, this can be different * from ji->method->klass->image's aot module for generic instances. */ static GHashTable *ji_to_amodule; /* * Whenever to AOT compile loaded assemblies on demand and store them in * a cache. */ static gboolean enable_aot_cache = FALSE; static gboolean mscorlib_aot_loaded; /* For debugging */ static gint32 mono_last_aot_method = -1; static gboolean make_unreadable = FALSE; static guint32 name_table_accesses = 0; static guint32 n_pagefaults = 0; /* Used to speed-up find_aot_module () */ static gsize aot_code_low_addr = (gssize)-1; static gsize aot_code_high_addr = 0; /* Stats */ static gint32 async_jit_info_size; static GHashTable *aot_jit_icall_hash; #ifdef MONOTOUCH #define USE_PAGE_TRAMPOLINES ((MonoAotModule*)mono_defaults.corlib->aot_module)->use_page_trampolines #else #define USE_PAGE_TRAMPOLINES 0 #endif #define mono_aot_page_lock() mono_os_mutex_lock (&aot_page_mutex) #define mono_aot_page_unlock() mono_os_mutex_unlock (&aot_page_mutex) static mono_mutex_t aot_page_mutex; static MonoAotModule *mscorlib_aot_module; /* Embedding API hooks to load the AOT data for AOT images compiled with MONO_AOT_FILE_FLAG_SEPARATE_DATA */ static MonoLoadAotDataFunc aot_data_load_func; static MonoFreeAotDataFunc aot_data_free_func; static gpointer aot_data_func_user_data; static void init_plt (MonoAotModule *info); static void compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end); static gboolean init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context, MonoError *error); static MonoJumpInfo* decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets); static inline void amodule_lock (MonoAotModule *amodule) { mono_os_mutex_lock (&amodule->mutex); } static inline void amodule_unlock (MonoAotModule *amodule) { mono_os_mutex_unlock (&amodule->mutex); } /* * load_image: * * Load one of the images referenced by AMODULE. Returns NULL if the image is not * found, and sets @error for what happened */ static MonoImage * load_image (MonoAotModule *amodule, int index, MonoError *error) { MonoAssembly *assembly; MonoImageOpenStatus status; g_assert (index < amodule->image_table_len); error_init (error); if (amodule->image_table [index]) return amodule->image_table [index]; if (amodule->out_of_date) { mono_error_set_bad_image_name (error, amodule->aot_name, "Image out of date"); return NULL; } assembly = mono_assembly_load (&amodule->image_names [index], amodule->assembly->basedir, &status); if (!assembly) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable because dependency %s is not found.", amodule->aot_name, amodule->image_names [index].name); mono_error_set_bad_image_name (error, amodule->aot_name, "module is unusable because dependency %s is not found (error %d).\n", amodule->image_names [index].name, status); amodule->out_of_date = TRUE; return NULL; } if (strcmp (assembly->image->guid, amodule->image_guids [index])) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').", amodule->aot_name, amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid); mono_error_set_bad_image_name (error, amodule->aot_name, "module is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').", amodule->image_names [index].name, amodule->image_guids [index], assembly->image->guid); amodule->out_of_date = TRUE; return NULL; } amodule->image_table [index] = assembly->image; return assembly->image; } static inline gint32 decode_value (guint8 *ptr, guint8 **rptr) { guint8 b = *ptr; gint32 len; if ((b & 0x80) == 0){ len = b; ++ptr; } else if ((b & 0x40) == 0){ len = ((b & 0x3f) << 8 | ptr [1]); ptr += 2; } else if (b != 0xff) { len = ((b & 0x1f) << 24) | (ptr [1] << 16) | (ptr [2] << 8) | ptr [3]; ptr += 4; } else { len = (ptr [1] << 24) | (ptr [2] << 16) | (ptr [3] << 8) | ptr [4]; ptr += 5; } if (rptr) *rptr = ptr; //printf ("DECODE: %d.\n", len); return len; } /* * mono_aot_get_offset: * * Decode an offset table emitted by emit_offset_table (), returning the INDEXth * entry. */ static guint32 mono_aot_get_offset (guint32 *table, int index) { int i, group, ngroups, index_entry_size; int start_offset, offset, group_size; guint8 *data_start, *p; guint32 *index32 = NULL; guint16 *index16 = NULL; /* noffsets = table [0]; */ group_size = table [1]; ngroups = table [2]; index_entry_size = table [3]; group = index / group_size; if (index_entry_size == 2) { index16 = (guint16*)&table [4]; data_start = (guint8*)&index16 [ngroups]; p = data_start + index16 [group]; } else { index32 = (guint32*)&table [4]; data_start = (guint8*)&index32 [ngroups]; p = data_start + index32 [group]; } /* offset will contain the value of offsets [group * group_size] */ offset = start_offset = decode_value (p, &p); for (i = group * group_size + 1; i <= index; ++i) { offset += decode_value (p, &p); } //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]); return offset; } static MonoMethod* decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error); static MonoClass* decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error); static MonoType* decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error); static MonoGenericInst* decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error) { int type_argc, i; MonoType **type_argv; MonoGenericInst *inst; guint8 *p = buf; error_init (error); type_argc = decode_value (p, &p); type_argv = g_new0 (MonoType*, type_argc); for (i = 0; i < type_argc; ++i) { MonoClass *pclass = decode_klass_ref (module, p, &p, error); if (!pclass) { g_free (type_argv); return NULL; } type_argv [i] = &pclass->byval_arg; } inst = mono_metadata_get_generic_inst (type_argc, type_argv); g_free (type_argv); *endbuf = p; return inst; } static gboolean decode_generic_context (MonoAotModule *module, MonoGenericContext *ctx, guint8 *buf, guint8 **endbuf, MonoError *error) { guint8 *p = buf; guint8 *p2; int argc; error_init (error); p2 = p; argc = decode_value (p, &p); if (argc) { p = p2; ctx->class_inst = decode_generic_inst (module, p, &p, error); if (!ctx->class_inst) return FALSE; } p2 = p; argc = decode_value (p, &p); if (argc) { p = p2; ctx->method_inst = decode_generic_inst (module, p, &p, error); if (!ctx->method_inst) return FALSE; } *endbuf = p; return TRUE; } static MonoClass* decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error) { MonoImage *image; MonoClass *klass = NULL, *eklass; guint32 token, rank, idx; guint8 *p = buf; int reftype; error_init (error); reftype = decode_value (p, &p); if (reftype == 0) { *endbuf = p; mono_error_set_bad_image_name (error, module->aot_name, "Decoding a null class ref"); return NULL; } switch (reftype) { case MONO_AOT_TYPEREF_TYPEDEF_INDEX: idx = decode_value (p, &p); image = load_image (module, 0, error); if (!image) return NULL; klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, error); break; case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE: idx = decode_value (p, &p); image = load_image (module, decode_value (p, &p), error); if (!image) return NULL; klass = mono_class_get_checked (image, MONO_TOKEN_TYPE_DEF + idx, error); break; case MONO_AOT_TYPEREF_TYPESPEC_TOKEN: token = decode_value (p, &p); image = module->assembly->image; if (!image) { mono_error_set_bad_image_name (error, module->aot_name, "No image associated with the aot module"); return NULL; } klass = mono_class_get_checked (image, token, error); break; case MONO_AOT_TYPEREF_GINST: { MonoClass *gclass; MonoGenericContext ctx; MonoType *type; gclass = decode_klass_ref (module, p, &p, error); if (!gclass) return NULL; g_assert (mono_class_is_gtd (gclass)); memset (&ctx, 0, sizeof (ctx)); ctx.class_inst = decode_generic_inst (module, p, &p, error); if (!ctx.class_inst) return NULL; type = mono_class_inflate_generic_type_checked (&gclass->byval_arg, &ctx, error); if (!type) return NULL; klass = mono_class_from_mono_type (type); mono_metadata_free_type (type); break; } case MONO_AOT_TYPEREF_VAR: { MonoType *t = NULL; MonoGenericContainer *container = NULL; gboolean has_constraint = decode_value (p, &p); if (has_constraint) { MonoClass *par_klass; MonoType *gshared_constraint; gshared_constraint = decode_type (module, p, &p, error); if (!gshared_constraint) return NULL; par_klass = decode_klass_ref (module, p, &p, error); if (!par_klass) return NULL; t = mini_get_shared_gparam (&par_klass->byval_arg, gshared_constraint); mono_metadata_free_type (gshared_constraint); klass = mono_class_from_mono_type (t); } else { int type = decode_value (p, &p); int num = decode_value (p, &p); gboolean is_not_anonymous = decode_value (p, &p); if (is_not_anonymous) { gboolean is_method = decode_value (p, &p); if (is_method) { MonoMethod *method_def; g_assert (type == MONO_TYPE_MVAR); method_def = decode_resolve_method_ref (module, p, &p, error); if (!method_def) return NULL; container = mono_method_get_generic_container (method_def); } else { MonoClass *class_def; g_assert (type == MONO_TYPE_VAR); class_def = decode_klass_ref (module, p, &p, error); if (!class_def) return NULL; container = mono_class_try_get_generic_container (class_def); //FIXME is this a case for a try_get? } } else { // We didn't decode is_method, so we have to infer it from type enum. container = get_anonymous_container_for_image (module->assembly->image, type == MONO_TYPE_MVAR); } t = g_new0 (MonoType, 1); t->type = (MonoTypeEnum)type; if (is_not_anonymous) { t->data.generic_param = mono_generic_container_get_param (container, num); } else { /* Anonymous */ MonoGenericParam *par = (MonoGenericParam*)mono_image_alloc0 (module->assembly->image, sizeof (MonoGenericParamFull)); par->owner = container; par->num = num; t->data.generic_param = par; ((MonoGenericParamFull*)par)->info.name = make_generic_name_string (module->assembly->image, num); } // FIXME: Maybe use types directly to avoid // the overhead of creating MonoClass-es klass = mono_class_from_mono_type (t); g_free (t); } break; } case MONO_AOT_TYPEREF_ARRAY: /* Array */ rank = decode_value (p, &p); eklass = decode_klass_ref (module, p, &p, error); if (!eklass) return NULL; klass = mono_array_class_get (eklass, rank); break; case MONO_AOT_TYPEREF_PTR: { MonoType *t; t = decode_type (module, p, &p, error); if (!t) return NULL; klass = mono_class_from_mono_type (t); g_free (t); break; } case MONO_AOT_TYPEREF_BLOB_INDEX: { guint32 offset = decode_value (p, &p); guint8 *p2; p2 = module->blob + offset; klass = decode_klass_ref (module, p2, &p2, error); break; } default: mono_error_set_bad_image_name (error, module->aot_name, "Invalid klass reftype %d", reftype); } //g_assert (klass); //printf ("BLA: %s\n", mono_type_full_name (&klass->byval_arg)); *endbuf = p; return klass; } static MonoClassField* decode_field_info (MonoAotModule *module, guint8 *buf, guint8 **endbuf) { MonoError error; MonoClass *klass = decode_klass_ref (module, buf, &buf, &error); guint32 token; guint8 *p = buf; if (!klass) { mono_error_cleanup (&error); /* FIXME don't swallow the error */ return NULL; } token = MONO_TOKEN_FIELD_DEF + decode_value (p, &p); *endbuf = p; return mono_class_get_field (klass, token); } /* * Parse a MonoType encoded by encode_type () in aot-compiler.c. Return malloc-ed * memory. */ static MonoType* decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error) { guint8 *p = buf; MonoType *t; t = (MonoType *)g_malloc0 (sizeof (MonoType)); error_init (error); while (TRUE) { if (*p == MONO_TYPE_PINNED) { t->pinned = TRUE; ++p; } else if (*p == MONO_TYPE_BYREF) { t->byref = TRUE; ++p; } else { break; } } t->type = (MonoTypeEnum)*p; ++p; switch (t->type) { case MONO_TYPE_VOID: case MONO_TYPE_BOOLEAN: case MONO_TYPE_CHAR: case MONO_TYPE_I1: case MONO_TYPE_U1: case MONO_TYPE_I2: case MONO_TYPE_U2: case MONO_TYPE_I4: case MONO_TYPE_U4: case MONO_TYPE_I8: case MONO_TYPE_U8: case MONO_TYPE_R4: case MONO_TYPE_R8: case MONO_TYPE_I: case MONO_TYPE_U: case MONO_TYPE_STRING: case MONO_TYPE_OBJECT: case MONO_TYPE_TYPEDBYREF: break; case MONO_TYPE_VALUETYPE: case MONO_TYPE_CLASS: t->data.klass = decode_klass_ref (module, p, &p, error); if (!t->data.klass) goto fail; break; case MONO_TYPE_SZARRAY: t->data.klass = decode_klass_ref (module, p, &p, error); if (!t->data.klass) goto fail; break; case MONO_TYPE_PTR: t->data.type = decode_type (module, p, &p, error); if (!t->data.type) goto fail; break; case MONO_TYPE_GENERICINST: { MonoClass *gclass; MonoGenericContext ctx; MonoType *type; MonoClass *klass; gclass = decode_klass_ref (module, p, &p, error); if (!gclass) goto fail; g_assert (mono_class_is_gtd (gclass)); memset (&ctx, 0, sizeof (ctx)); ctx.class_inst = decode_generic_inst (module, p, &p, error); if (!ctx.class_inst) goto fail; type = mono_class_inflate_generic_type_checked (&gclass->byval_arg, &ctx, error); if (!type) goto fail; klass = mono_class_from_mono_type (type); t->data.generic_class = mono_class_get_generic_class (klass); break; } case MONO_TYPE_ARRAY: { MonoArrayType *array; int i; // FIXME: memory management array = g_new0 (MonoArrayType, 1); array->eklass = decode_klass_ref (module, p, &p, error); if (!array->eklass) goto fail; array->rank = decode_value (p, &p); array->numsizes = decode_value (p, &p); if (array->numsizes) array->sizes = (int *)g_malloc0 (sizeof (int) * array->numsizes); for (i = 0; i < array->numsizes; ++i) array->sizes [i] = decode_value (p, &p); array->numlobounds = decode_value (p, &p); if (array->numlobounds) array->lobounds = (int *)g_malloc0 (sizeof (int) * array->numlobounds); for (i = 0; i < array->numlobounds; ++i) array->lobounds [i] = decode_value (p, &p); t->data.array = array; break; } case MONO_TYPE_VAR: case MONO_TYPE_MVAR: { MonoClass *klass = decode_klass_ref (module, p, &p, error); if (!klass) goto fail; t->data.generic_param = klass->byval_arg.data.generic_param; break; } default: mono_error_set_bad_image_name (error, module->aot_name, "Invalid encoded type %d", t->type); goto fail; } *endbuf = p; return t; fail: g_free (t); return NULL; } // FIXME: Error handling, memory management static MonoMethodSignature* decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf) { MonoError error; MonoMethodSignature *sig; guint32 flags; int i, gen_param_count = 0, param_count, call_conv; guint8 *p = buf; gboolean hasthis, explicit_this, has_gen_params; flags = *p; p ++; has_gen_params = (flags & 0x10) != 0; hasthis = (flags & 0x20) != 0; explicit_this = (flags & 0x40) != 0; call_conv = flags & 0x0F; if (has_gen_params) gen_param_count = decode_value (p, &p); param_count = decode_value (p, &p); if (target && param_count != target->param_count) return NULL; sig = (MonoMethodSignature *)g_malloc0 (MONO_SIZEOF_METHOD_SIGNATURE + param_count * sizeof (MonoType *)); sig->param_count = param_count; sig->sentinelpos = -1; sig->hasthis = hasthis; sig->explicit_this = explicit_this; sig->call_convention = call_conv; sig->generic_param_count = gen_param_count; sig->ret = decode_type (module, p, &p, &error); if (!sig->ret) goto fail; for (i = 0; i < param_count; ++i) { if (*p == MONO_TYPE_SENTINEL) { g_assert (sig->call_convention == MONO_CALL_VARARG); sig->sentinelpos = i; p ++; } sig->params [i] = decode_type (module, p, &p, &error); if (!sig->params [i]) goto fail; } if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1) sig->sentinelpos = sig->param_count; *endbuf = p; return sig; fail: mono_error_cleanup (&error); /* FIXME don't swallow the error */ g_free (sig); return NULL; } static MonoMethodSignature* decode_signature (MonoAotModule *module, guint8 *buf, guint8 **endbuf) { return decode_signature_with_target (module, NULL, buf, endbuf); } static gboolean sig_matches_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf) { MonoMethodSignature *sig; gboolean res; guint8 *p = buf; sig = decode_signature_with_target (module, mono_method_signature (target), p, &p); res = sig && mono_metadata_signature_equal (mono_method_signature (target), sig); g_free (sig); *endbuf = p; return res; } /* Stores information returned by decode_method_ref () */ typedef struct { MonoImage *image; guint32 token; MonoMethod *method; gboolean no_aot_trampoline; } MethodRef; /* * decode_method_ref_with_target: * * Decode a method reference, storing the image/token into a MethodRef structure. * This avoids loading metadata for the method if the caller does not need it. If the method has * no token, then it is loaded from metadata and ref->method is set to the method instance. * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method * couldn't resolve to TARGET, and return FALSE. * There are some kinds of method references which only support a non-null TARGET. * This means that its not possible to decode this into a method, only to check * that the method reference matches a given method. This is normally not a problem * as these wrappers only occur in the extra_methods table, where we already have * a method we want to lookup. * * If there was a decoding error, we return FALSE and set @error */ static gboolean decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf, MonoError *error) { guint32 image_index, value; MonoImage *image = NULL; guint8 *p = buf; memset (ref, 0, sizeof (MethodRef)); error_init (error); value = decode_value (p, &p); image_index = value >> 24; if (image_index == MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE) { ref->no_aot_trampoline = TRUE; value = decode_value (p, &p); image_index = value >> 24; } if (image_index < MONO_AOT_METHODREF_MIN || image_index == MONO_AOT_METHODREF_METHODSPEC || image_index == MONO_AOT_METHODREF_GINST) { if (target && target->wrapper_type) { return FALSE; } } if (image_index == MONO_AOT_METHODREF_WRAPPER) { WrapperInfo *info; guint32 wrapper_type; wrapper_type = decode_value (p, &p); if (target && target->wrapper_type != wrapper_type) return FALSE; /* Doesn't matter */ image = mono_defaults.corlib; switch (wrapper_type) { #ifndef DISABLE_REMOTING case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK: { MonoMethod *m = decode_resolve_method_ref (module, p, &p, error); if (!m) return FALSE; mono_class_init (m->klass); if (mono_aot_only) ref->method = m; else ref->method = mono_marshal_get_remoting_invoke_with_check (m); break; } case MONO_WRAPPER_PROXY_ISINST: { MonoClass *klass = decode_klass_ref (module, p, &p, error); if (!klass) return FALSE; ref->method = mono_marshal_get_proxy_cancast (klass); break; } case MONO_WRAPPER_LDFLD: case MONO_WRAPPER_LDFLDA: case MONO_WRAPPER_STFLD: { MonoClass *klass = decode_klass_ref (module, p, &p, error); if (!klass) return FALSE; if (wrapper_type == MONO_WRAPPER_LDFLD) ref->method = mono_marshal_get_ldfld_wrapper (&klass->byval_arg); else if (wrapper_type == MONO_WRAPPER_LDFLDA) ref->method = mono_marshal_get_ldflda_wrapper (&klass->byval_arg); else if (wrapper_type == MONO_WRAPPER_STFLD) ref->method = mono_marshal_get_stfld_wrapper (&klass->byval_arg); else { mono_error_set_bad_image_name (error, module->aot_name, "Unknown AOT wrapper type %d", wrapper_type); return FALSE; } break; } #endif case MONO_WRAPPER_ALLOC: { int atype = decode_value (p, &p); ManagedAllocatorVariant variant = mono_profiler_allocations_enabled () ? MANAGED_ALLOCATOR_PROFILER : MANAGED_ALLOCATOR_REGULAR; ref->method = mono_gc_get_managed_allocator_by_type (atype, variant); /* Try to fallback to the slow path version */ if (!ref->method) ref->method = mono_gc_get_managed_allocator_by_type (atype, MANAGED_ALLOCATOR_SLOW_PATH); if (!ref->method) { mono_error_set_bad_image_name (error, module->aot_name, "Error: No managed allocator, but we need one for AOT.\nAre you using non-standard GC options?\n"); return FALSE; } break; } case MONO_WRAPPER_WRITE_BARRIER: { ref->method = mono_gc_get_write_barrier (); break; } case MONO_WRAPPER_STELEMREF: { int subtype = decode_value (p, &p); if (subtype == WRAPPER_SUBTYPE_NONE) { ref->method = mono_marshal_get_stelemref (); } else if (subtype == WRAPPER_SUBTYPE_VIRTUAL_STELEMREF) { int kind; kind = decode_value (p, &p); /* Can't decode this */ if (!target) return FALSE; if (target->wrapper_type == MONO_WRAPPER_STELEMREF) { info = mono_marshal_get_wrapper_info (target); g_assert (info); if (info->subtype == subtype && info->d.virtual_stelemref.kind == kind) ref->method = target; else return FALSE; } else { return FALSE; } } else { mono_error_set_bad_image_name (error, module->aot_name, "Invalid STELEMREF subtype %d", subtype); return FALSE; } break; } case MONO_WRAPPER_SYNCHRONIZED: { MonoMethod *m = decode_resolve_method_ref (module, p, &p, error); if (!m) return FALSE; ref->method = mono_marshal_get_synchronized_wrapper (m); break; } case MONO_WRAPPER_UNKNOWN: { int subtype = decode_value (p, &p); if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE || subtype == WRAPPER_SUBTYPE_STRUCTURE_TO_PTR) { MonoClass *klass = decode_klass_ref (module, p, &p, error); if (!klass) return FALSE; if (!target) return FALSE; if (klass != target->klass) return FALSE; if (subtype == WRAPPER_SUBTYPE_PTR_TO_STRUCTURE) { if (strcmp (target->name, "PtrToStructure")) return FALSE; ref->method = mono_marshal_get_ptr_to_struct (klass); } else { if (strcmp (target->name, "StructureToPtr")) return FALSE; ref->method = mono_marshal_get_struct_to_ptr (klass); } } else if (subtype == WRAPPER_SUBTYPE_SYNCHRONIZED_INNER) { MonoMethod *m = decode_resolve_method_ref (module, p, &p, error); if (!m) return FALSE; ref->method = mono_marshal_get_synchronized_inner_wrapper (m); } else if (subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) { MonoMethod *m = decode_resolve_method_ref (module, p, &p, error); if (!m) return FALSE; ref->method = mono_marshal_get_array_accessor_wrapper (m); } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN) { ref->method = mono_marshal_get_gsharedvt_in_wrapper (); } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) { ref->method = mono_marshal_get_gsharedvt_out_wrapper (); } else if (subtype == WRAPPER_SUBTYPE_INTERP_IN) { ref->method = mini_get_interp_in_wrapper (target->signature); } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG) { MonoMethodSignature *sig = decode_signature (module, p, &p); if (!sig) return FALSE; ref->method = mini_get_gsharedvt_in_sig_wrapper (sig); } else if (subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG) { MonoMethodSignature *sig = decode_signature (module, p, &p); if (!sig) return FALSE; ref->method = mini_get_gsharedvt_out_sig_wrapper (sig); } else { mono_error_set_bad_image_name (error, module->aot_name, "Invalid UNKNOWN wrapper subtype %d", subtype); return FALSE; } break; } case MONO_WRAPPER_MANAGED_TO_MANAGED: { int subtype = decode_value (p, &p); if (subtype == WRAPPER_SUBTYPE_ELEMENT_ADDR) { int rank = decode_value (p, &p); int elem_size = decode_value (p, &p); ref->method = mono_marshal_get_array_address (rank, elem_size); } else if (subtype == WRAPPER_SUBTYPE_STRING_CTOR) { MonoMethod *m; m = decode_resolve_method_ref (module, p, &p, error); if (!m) return FALSE; if (!target) return FALSE; g_assert (target->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED); info = mono_marshal_get_wrapper_info (target); if (info && info->subtype == subtype && info->d.string_ctor.method == m) ref->method = target; else return FALSE; } break; } case MONO_WRAPPER_MANAGED_TO_NATIVE: { MonoMethod *m; int subtype = decode_value (p, &p); char *name; if (subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER) { if (!target) return FALSE; name = (char*)p; if (strcmp (target->name, name) != 0) return FALSE; ref->method = target; } else { m = decode_resolve_method_ref (module, p, &p, error); if (!m) return FALSE; /* This should only happen when looking for an extra method */ if (!target) return FALSE; if (mono_marshal_method_from_wrapper (target) == m) ref->method = target; else return FALSE; } break; } case MONO_WRAPPER_CASTCLASS: { int subtype = decode_value (p, &p); if (subtype == WRAPPER_SUBTYPE_CASTCLASS_WITH_CACHE) ref->method = mono_marshal_get_castclass_with_cache (); else if (subtype == WRAPPER_SUBTYPE_ISINST_WITH_CACHE) ref->method = mono_marshal_get_isinst_with_cache (); else { mono_error_set_bad_image_name (error, module->aot_name, "Invalid CASTCLASS wrapper subtype %d", subtype); return FALSE; } break; } case MONO_WRAPPER_RUNTIME_INVOKE: { int subtype = decode_value (p, &p); if (!target) return FALSE; if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DYNAMIC) { if (strcmp (target->name, "runtime_invoke_dynamic") != 0) return FALSE; ref->method = target; } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_DIRECT) { /* Direct wrapper */ MonoMethod *m = decode_resolve_method_ref (module, p, &p, error); if (!m) return FALSE; ref->method = mono_marshal_get_runtime_invoke (m, FALSE); } else if (subtype == WRAPPER_SUBTYPE_RUNTIME_INVOKE_VIRTUAL) { /* Virtual direct wrapper */ MonoMethod *m = decode_resolve_method_ref (module, p, &p, error); if (!m) return FALSE; ref->method = mono_marshal_get_runtime_invoke (m, TRUE); } else { MonoMethodSignature *sig; sig = decode_signature_with_target (module, NULL, p, &p); info = mono_marshal_get_wrapper_info (target); g_assert (info); if (info->subtype != subtype) return FALSE; g_assert (info->d.runtime_invoke.sig); if (mono_metadata_signature_equal (sig, info->d.runtime_invoke.sig)) ref->method = target; else return FALSE; } break; } case MONO_WRAPPER_DELEGATE_INVOKE: case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE: case MONO_WRAPPER_DELEGATE_END_INVOKE: { gboolean is_inflated = decode_value (p, &p); WrapperSubtype subtype; if (is_inflated) { MonoClass *klass; MonoMethod *invoke, *wrapper; klass = decode_klass_ref (module, p, &p, error); if (!klass) return FALSE; switch (wrapper_type) { case MONO_WRAPPER_DELEGATE_INVOKE: invoke = mono_get_delegate_invoke (klass); wrapper = mono_marshal_get_delegate_invoke (invoke, NULL); break; case MONO_WRAPPER_DELEGATE_BEGIN_INVOKE: invoke = mono_get_delegate_begin_invoke (klass); wrapper = mono_marshal_get_delegate_begin_invoke (invoke); break; case MONO_WRAPPER_DELEGATE_END_INVOKE: invoke = mono_get_delegate_end_invoke (klass); wrapper = mono_marshal_get_delegate_end_invoke (invoke); break; default: g_assert_not_reached (); break; } if (target) { /* * Due to the way mini_get_shared_method () works, we could end up with * multiple copies of the same wrapper. */ if (wrapper->klass != target->klass) return FALSE; ref->method = target; } else { ref->method = wrapper; } } else { /* * These wrappers are associated with a signature, not with a method. * Since we can't decode them into methods, they need a target method. */ if (!target) return FALSE; if (wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) { subtype = (WrapperSubtype)decode_value (p, &p); info = mono_marshal_get_wrapper_info (target); if (info) { if (info->subtype != subtype) return FALSE; } else { if (subtype != WRAPPER_SUBTYPE_NONE) return FALSE; } } if (sig_matches_target (module, target, p, &p)) ref->method = target; else return FALSE; } break; } case MONO_WRAPPER_NATIVE_TO_MANAGED: { MonoMethod *m; MonoClass *klass; m = decode_resolve_method_ref (module, p, &p, error); if (!m) return FALSE; klass = decode_klass_ref (module, p, &p, error); if (!klass) return FALSE; ref->method = mono_marshal_get_managed_wrapper (m, klass, 0, error); if (!mono_error_ok (error)) return FALSE; break; } default: g_assert_not_reached (); } } else if (image_index == MONO_AOT_METHODREF_METHODSPEC) { image_index = decode_value (p, &p); ref->token = decode_value (p, &p); image = load_image (module, image_index, error); if (!image) return FALSE; } else if (image_index == MONO_AOT_METHODREF_GINST) { MonoClass *klass; MonoGenericContext ctx; /* * These methods do not have a token which resolves them, so we * resolve them immediately. */ klass = decode_klass_ref (module, p, &p, error); if (!klass) return FALSE; if (target && target->klass != klass) return FALSE; image_index = decode_value (p, &p); ref->token = decode_value (p, &p); image = load_image (module, image_index, error); if (!image) return FALSE; ref->method = mono_get_method_checked (image, ref->token, NULL, NULL, error); if (!ref->method) return FALSE; memset (&ctx, 0, sizeof (ctx)); if (FALSE && mono_class_is_ginst (klass)) { ctx.class_inst = mono_class_get_generic_class (klass)->context.class_inst; ctx.method_inst = NULL; ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error); if (!ref->method) return FALSE; } memset (&ctx, 0, sizeof (ctx)); if (!decode_generic_context (module, &ctx, p, &p, error)) return FALSE; ref->method = mono_class_inflate_generic_method_full_checked (ref->method, klass, &ctx, error); if (!ref->method) return FALSE; } else if (image_index == MONO_AOT_METHODREF_ARRAY) { MonoClass *klass; int method_type; klass = decode_klass_ref (module, p, &p, error); if (!klass) return FALSE; method_type = decode_value (p, &p); switch (method_type) { case 0: ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank); break; case 1: ref->method = mono_class_get_method_from_name (klass, ".ctor", klass->rank * 2); break; case 2: ref->method = mono_class_get_method_from_name (klass, "Get", -1); break; case 3: ref->method = mono_class_get_method_from_name (klass, "Address", -1); break; case 4: ref->method = mono_class_get_method_from_name (klass, "Set", -1); break; default: mono_error_set_bad_image_name (error, module->aot_name, "Invalid METHODREF_ARRAY method type %d", method_type); return FALSE; } } else { if (image_index == MONO_AOT_METHODREF_LARGE_IMAGE_INDEX) { image_index = decode_value (p, &p); value = decode_value (p, &p); } ref->token = MONO_TOKEN_METHOD_DEF | (value & 0xffffff); image = load_image (module, image_index, error); if (!image) return FALSE; } *endbuf = p; ref->image = image; return TRUE; } static gboolean decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf, MonoError *error) { return decode_method_ref_with_target (module, ref, NULL, buf, endbuf, error); } /* * decode_resolve_method_ref_with_target: * * Similar to decode_method_ref, but resolve and return the method itself. */ static MonoMethod* decode_resolve_method_ref_with_target (MonoAotModule *module, MonoMethod *target, guint8 *buf, guint8 **endbuf, MonoError *error) { MethodRef ref; error_init (error); if (!decode_method_ref_with_target (module, &ref, target, buf, endbuf, error)) return NULL; if (ref.method) return ref.method; if (!ref.image) { mono_error_set_bad_image_name (error, module->aot_name, "No image found for methodref with target"); return NULL; } return mono_get_method_checked (ref.image, ref.token, NULL, NULL, error); } static MonoMethod* decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf, MonoError *error) { return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf, error); } #ifdef ENABLE_AOT_CACHE /* AOT CACHE */ /* * FIXME: * - Add options for controlling the cache size * - Handle full cache by deleting old assemblies lru style * - Maybe add a threshold after an assembly is AOT compiled * - Add options for enabling this for specific main assemblies */ /* The cache directory */ static char *cache_dir; /* The number of assemblies AOTed in this run */ static int cache_count; /* Whenever to AOT in-process */ static gboolean in_process; static void collect_assemblies (gpointer data, gpointer user_data) { MonoAssembly *ass = data; GSList **l = user_data; *l = g_slist_prepend (*l, ass); } #define SHA1_DIGEST_LENGTH 20 /* * get_aot_config_hash: * * Return a hash for all the version information an AOT module depends on. */ static G_GNUC_UNUSED char* get_aot_config_hash (MonoAssembly *assembly) { char *build_info; GSList *l, *assembly_list = NULL; GString *s; int i; guint8 digest [SHA1_DIGEST_LENGTH]; char *digest_str; build_info = mono_get_runtime_build_info (); s = g_string_new (build_info); mono_assembly_foreach (collect_assemblies, &assembly_list); /* * The assembly list includes the current assembly as well, no need * to add it. */ for (l = assembly_list; l; l = l->next) { MonoAssembly *ass = l->data; g_string_append (s, "_"); g_string_append (s, ass->aname.name); g_string_append (s, "_"); g_string_append (s, ass->image->guid); } for (i = 0; i < s->len; ++i) { if (!isalnum (s->str [i]) && s->str [i] != '-') s->str [i] = '_'; } mono_sha1_get_digest ((guint8*)s->str, s->len, digest); digest_str = g_malloc0 ((SHA1_DIGEST_LENGTH * 2) + 1); for (i = 0; i < SHA1_DIGEST_LENGTH; ++i) sprintf (digest_str + (i * 2), "%02x", digest [i]); mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: file dependencies: %s, hash %s", s->str, digest_str); g_string_free (s, TRUE); return digest_str; } static void aot_cache_init (void) { if (mono_aot_only) return; enable_aot_cache = TRUE; in_process = TRUE; } /* * aot_cache_load_module: * * Load the AOT image corresponding to ASSEMBLY from the aot cache, AOTing it if neccessary. */ static MonoDl* aot_cache_load_module (MonoAssembly *assembly, char **aot_name) { MonoAotCacheConfig *config; GSList *l; char *fname, *tmp2, *aot_options, *failure_fname; const char *home; MonoDl *module; gboolean res; gint exit_status; char *hash; int pid; gboolean enabled; FILE *failure_file; *aot_name = NULL; if (image_is_dynamic (assembly->image)) return NULL; /* Check in the list of assemblies enabled for aot caching */ config = mono_get_aot_cache_config (); enabled = FALSE; if (config->apps) { MonoDomain *domain = mono_domain_get (); MonoAssembly *entry_assembly = domain->entry_assembly; // FIXME: This cannot be used for mscorlib during startup, since entry_assembly is not set yet for (l = config->apps; l; l = l->next) { char *n = l->data; if ((entry_assembly && !strcmp (entry_assembly->aname.name, n)) || (!entry_assembly && !strcmp (assembly->aname.name, n))) break; } if (l) enabled = TRUE; } if (!enabled) { for (l = config->assemblies; l; l = l->next) { char *n = l->data; if (!strcmp (assembly->aname.name, n)) break; } if (l) enabled = TRUE; } if (!enabled) return NULL; if (!cache_dir) { home = g_get_home_dir (); if (!home) return NULL; cache_dir = g_strdup_printf ("%s/Library/Caches/mono/aot-cache", home); if (!g_file_test (cache_dir, G_FILE_TEST_EXISTS|G_FILE_TEST_IS_DIR)) g_mkdir_with_parents (cache_dir, 0777); } /* * The same assembly can be used in multiple configurations, i.e. multiple * versions of the runtime, with multiple versions of dependent assemblies etc. * To handle this, we compute a version string containing all this information, hash it, * and use the hash as a filename suffix. */ hash = get_aot_config_hash (assembly); tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, hash, MONO_SOLIB_EXT); fname = g_build_filename (cache_dir, tmp2, NULL); *aot_name = fname; g_free (tmp2); mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: loading from cache: '%s'.", fname); module = mono_dl_open (fname, MONO_DL_LAZY, NULL); if (module) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: found in cache: '%s'.", fname); return module; } if (!strcmp (assembly->aname.name, "mscorlib") && !mscorlib_aot_loaded) /* * Can't AOT this during startup, so we AOT it when called later from * mono_aot_get_method (). */ return NULL; mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: not found."); /* Only AOT one assembly per run to avoid slowing down execution too much */ if (cache_count > 0) return NULL; cache_count ++; /* Check for previous failure */ failure_fname = g_strdup_printf ("%s.failure", fname); failure_file = fopen (failure_fname, "r"); if (failure_file) { mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: assembly '%s' previously failed to compile '%s' ('%s')... ", assembly->image->name, fname, failure_fname); g_free (failure_fname); return NULL; } else { g_free (failure_fname); fclose (failure_file); } mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compiling assembly '%s', logfile: '%s.log'... ", assembly->image->name, fname); /* * We need to invoke the AOT compiler here. There are multiple approaches: * - spawn a new runtime process. This can be hard when running with mkbundle, and * its hard to make the new process load the same set of assemblies. * - doing it in-process. This exposes the current process to bugs/leaks/side effects of * the AOT compiler. * - fork a new process and do the work there. */ if (in_process) { aot_options = g_strdup_printf ("outfile=%s,internal-logfile=%s.log%s%s", fname, fname, config->aot_options ? "," : "", config->aot_options ? config->aot_options : ""); /* Maybe due this in another thread ? */ res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options); if (res) { mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation failed."); failure_fname = g_strdup_printf ("%s.failure", fname); failure_file = fopen (failure_fname, "a+"); fclose (failure_file); g_free (failure_fname); } else { mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: compilation succeeded."); } } else { /* * - Avoid waiting for the aot process to finish ? * (less overhead, but multiple processes could aot the same assembly at the same time) */ pid = fork (); if (pid == 0) { FILE *logfile; char *logfile_name; /* Child */ logfile_name = g_strdup_printf ("%s/aot.log", cache_dir); logfile = fopen (logfile_name, "a+"); g_free (logfile_name); dup2 (fileno (logfile), 1); dup2 (fileno (logfile), 2); aot_options = g_strdup_printf ("outfile=%s", fname); res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options); if (!res) { exit (1); } else { exit (0); } } else { /* Parent */ waitpid (pid, &exit_status, 0); if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0)) mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: failed."); else mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT: succeeded."); } } module = mono_dl_open (fname, MONO_DL_LAZY, NULL); return module; } #else static void aot_cache_init (void) { } static MonoDl* aot_cache_load_module (MonoAssembly *assembly, char **aot_name) { return NULL; } #endif static void find_symbol (MonoDl *module, gpointer *globals, const char *name, gpointer *value) { if (globals) { int global_index; guint16 *table, *entry; guint16 table_size; guint32 hash; char *symbol = (char*)name; #ifdef TARGET_MACH symbol = g_strdup_printf ("_%s", name); #endif /* The first entry points to the hash */ table = (guint16 *)globals [0]; globals ++; table_size = table [0]; table ++; hash = mono_metadata_str_hash (symbol) % table_size; entry = &table [hash * 2]; /* Search the hash for the index into the globals table */ global_index = -1; while (entry [0] != 0) { guint32 index = entry [0] - 1; guint32 next = entry [1]; //printf ("X: %s %s\n", (char*)globals [index * 2], name); if (!strcmp (globals [index * 2], symbol)) { global_index = index; break; } if (next != 0) { entry = &table [next * 2]; } else { break; } } if (global_index != -1) *value = globals [global_index * 2 + 1]; else *value = NULL; if (symbol != name) g_free (symbol); } else { char *err = mono_dl_symbol (module, name, value); if (err) g_free (err); } } static void find_amodule_symbol (MonoAotModule *amodule, const char *name, gpointer *value) { g_assert (!(amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)); find_symbol (amodule->sofile, amodule->globals, name, value); } void mono_install_load_aot_data_hook (MonoLoadAotDataFunc load_func, MonoFreeAotDataFunc free_func, gpointer user_data) { aot_data_load_func = load_func; aot_data_free_func = free_func; aot_data_func_user_data = user_data; } /* Load the separate aot data file for ASSEMBLY */ static guint8* open_aot_data (MonoAssembly *assembly, MonoAotFileInfo *info, void **ret_handle) { MonoFileMap *map; char *filename; guint8 *data; if (aot_data_load_func) { data = aot_data_load_func (assembly, info->datafile_size, aot_data_func_user_data, ret_handle); g_assert (data); return data; } /* * Use .aotdata as the default implementation if no callback is given */ filename = g_strdup_printf ("%s.aotdata", assembly->image->name); map = mono_file_map_open (filename); g_assert (map); data = mono_file_map (info->datafile_size, MONO_MMAP_READ, mono_file_map_fd (map), 0, ret_handle); g_assert (data); return data; } static gboolean check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, guint8 *blob, char **out_msg) { char *build_info; char *msg = NULL; gboolean usable = TRUE; gboolean full_aot, safepoints; guint32 excluded_cpu_optimizations; if (strcmp (assembly->image->guid, info->assembly_guid)) { msg = g_strdup_printf ("doesn't match assembly"); usable = FALSE; } build_info = mono_get_runtime_build_info (); if (strlen ((const char *)info->runtime_version) > 0 && strcmp (info->runtime_version, build_info)) { msg = g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info->runtime_version, build_info); usable = FALSE; } g_free (build_info); full_aot = info->flags & MONO_AOT_FILE_FLAG_FULL_AOT; if (mono_aot_only && !full_aot) { msg = g_strdup_printf ("not compiled with --aot=full"); usable = FALSE; } if (!mono_aot_only && full_aot) { msg = g_strdup_printf ("compiled with --aot=full"); usable = FALSE; } if (mono_llvm_only && !(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) { msg = g_strdup_printf ("not compiled with --aot=llvmonly"); usable = FALSE; } if (mini_get_debug_options ()->mdb_optimizations && !(info->flags & MONO_AOT_FILE_FLAG_DEBUG) && !full_aot) { msg = g_strdup_printf ("not compiled for debugging"); usable = FALSE; } mono_arch_cpu_optimizations (&excluded_cpu_optimizations); if (info->opts & excluded_cpu_optimizations) { msg = g_strdup_printf ("compiled with unsupported CPU optimizations"); usable = FALSE; } if (!mono_aot_only && (info->simd_opts & ~mono_arch_cpu_enumerate_simd_versions ())) { msg = g_strdup_printf ("compiled with unsupported SIMD extensions"); usable = FALSE; } if (info->gc_name_index != -1) { char *gc_name = (char*)&blob [info->gc_name_index]; const char *current_gc_name = mono_gc_get_gc_name (); if (strcmp (current_gc_name, gc_name) != 0) { msg = g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name, current_gc_name); usable = FALSE; } } safepoints = info->flags & MONO_AOT_FILE_FLAG_SAFEPOINTS; if (!safepoints && mono_threads_is_coop_enabled ()) { msg = g_strdup_printf ("not compiled with safepoints"); usable = FALSE; } *out_msg = msg; return usable; } /* * TABLE should point to a table of call instructions. Return the address called by the INDEXth entry. */ static void* get_call_table_entry (void *table, int index) { #if defined(TARGET_ARM) guint32 *ins_addr; guint32 ins; gint32 offset; ins_addr = (guint32*)table + index; ins = *ins_addr; if ((ins >> ARMCOND_SHIFT) == ARMCOND_NV) { /* blx */ offset = (((int)(((ins & 0xffffff) << 1) | ((ins >> 24) & 0x1))) << 7) >> 7; return (char*)ins_addr + (offset * 2) + 8 + 1; } else { offset = (((int)ins & 0xffffff) << 8) >> 8; return (char*)ins_addr + (offset * 4) + 8; } #elif defined(TARGET_ARM64) return mono_arch_get_call_target ((guint8*)table + (index * 4) + 4); #elif defined(TARGET_X86) || defined(TARGET_AMD64) /* The callee expects an ip which points after the call */ return mono_arch_get_call_target ((guint8*)table + (index * 5) + 5); #else g_assert_not_reached (); return NULL; #endif } /* * init_amodule_got: * * Initialize the shared got entries for AMODULE. */ static void init_amodule_got (MonoAotModule *amodule) { MonoJumpInfo *ji; MonoMemPool *mp; MonoJumpInfo *patches; guint32 got_offsets [128]; MonoError error; int i, npatches; /* These can't be initialized in load_aot_module () */ if (amodule->shared_got [0] || amodule->got_initializing) return; amodule->got_initializing = TRUE; mp = mono_mempool_new (); npatches = amodule->info.nshared_got_entries; for (i = 0; i < npatches; ++i) got_offsets [i] = i; patches = decode_patches (amodule, mp, npatches, FALSE, got_offsets); g_assert (patches); for (i = 0; i < npatches; ++i) { ji = &patches [i]; if (ji->type == MONO_PATCH_INFO_GC_CARD_TABLE_ADDR && !mono_gc_is_moving ()) { amodule->shared_got [i] = NULL; } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_START && !mono_gc_is_moving ()) { amodule->shared_got [i] = NULL; } else if (ji->type == MONO_PATCH_INFO_GC_NURSERY_BITS && !mono_gc_is_moving ()) { amodule->shared_got [i] = NULL; } else if (ji->type == MONO_PATCH_INFO_IMAGE) { amodule->shared_got [i] = amodule->assembly->image; } else if (ji->type == MONO_PATCH_INFO_MSCORLIB_GOT_ADDR) { if (mono_defaults.corlib) { MonoAotModule *mscorlib_amodule = (MonoAotModule *)mono_defaults.corlib->aot_module; if (mscorlib_amodule) amodule->shared_got [i] = mscorlib_amodule->got; } else { amodule->shared_got [i] = amodule->got; } } else if (ji->type == MONO_PATCH_INFO_AOT_MODULE) { amodule->shared_got [i] = amodule; } else { amodule->shared_got [i] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, ji, FALSE, &error); mono_error_assert_ok (&error); } } if (amodule->got) { for (i = 0; i < npatches; ++i) amodule->got [i] = amodule->shared_got [i]; } if (amodule->llvm_got) { for (i = 0; i < npatches; ++i) amodule->llvm_got [i] = amodule->shared_got [i]; } mono_mempool_destroy (mp); } static void load_aot_module (MonoAssembly *assembly, gpointer user_data) { char *aot_name, *found_aot_name; MonoAotModule *amodule; MonoDl *sofile; gboolean usable = TRUE; char *version_symbol = NULL; char *msg = NULL; gpointer *globals = NULL; MonoAotFileInfo *info = NULL; int i, version; gboolean do_load_image = TRUE; int align_double, align_int64; guint8 *aot_data = NULL; if (mono_compile_aot) return; if (assembly->image->aot_module) /* * Already loaded. This can happen because the assembly loading code might invoke * the assembly load hooks multiple times for the same assembly. */ return; if (image_is_dynamic (assembly->image) || assembly->ref_only || mono_domain_get () != mono_get_root_domain ()) return; mono_aot_lock (); if (static_aot_modules) info = (MonoAotFileInfo *)g_hash_table_lookup (static_aot_modules, assembly->aname.name); else info = NULL; mono_aot_unlock (); sofile = NULL; found_aot_name = NULL; if (info) { /* Statically linked AOT module */ aot_name = g_strdup_printf ("%s", assembly->aname.name); mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.", aot_name); if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) { globals = (void **)info->globals; g_assert (globals); } found_aot_name = g_strdup (aot_name); } else { char *err; if (enable_aot_cache) sofile = aot_cache_load_module (assembly, &aot_name); if (!sofile) { aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT); sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err); if (sofile) { found_aot_name = g_strdup (aot_name); } else { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' not found: %s", aot_name, err); g_free (err); } g_free (aot_name); } if (!sofile) { char *basename = g_path_get_basename (assembly->image->name); aot_name = g_strdup_printf ("%s/mono/aot-cache/%s/%s%s", mono_assembly_getrootdir(), MONO_ARCHITECTURE, basename, MONO_SOLIB_EXT); g_free (basename); sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err); if (!sofile) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' not found: %s", aot_name, err); g_free (err); } g_free (aot_name); } if (!sofile) { GList *l; for (l = mono_aot_paths; l; l = l->next) { char *path = l->data; char *basename = g_path_get_basename (assembly->image->name); aot_name = g_strdup_printf ("%s/%s%s", path, basename, MONO_SOLIB_EXT); sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err); if (sofile) { found_aot_name = g_strdup (aot_name); } else { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' not found: %s", aot_name, err); g_free (err); } g_free (basename); g_free (aot_name); if (sofile) break; } } if (!sofile) { if (mono_aot_only && !mono_use_interpreter && assembly->image->tables [MONO_TABLE_METHOD].rows) { aot_name = g_strdup_printf ("%s%s", assembly->image->name, MONO_SOLIB_EXT); g_error ("Failed to load AOT module '%s' in aot-only mode.\n", aot_name); g_free (aot_name); } return; } } if (!info) { find_symbol (sofile, globals, "mono_aot_version", (gpointer *) &version_symbol); find_symbol (sofile, globals, "mono_aot_file_info", (gpointer*)&info); } // Copy aotid to MonoImage memcpy(&assembly->image->aotid, info->aotid, 16); if (version_symbol) { /* Old file format */ version = atoi (version_symbol); } else { g_assert (info); version = info->version; } if (version != MONO_AOT_FILE_VERSION) { msg = g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION, version); usable = FALSE; } else { guint8 *blob; void *handle; if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) { aot_data = open_aot_data (assembly, info, &handle); blob = aot_data + info->table_offsets [MONO_AOT_TABLE_BLOB]; } else { blob = (guint8 *)info->blob; } usable = check_usable (assembly, info, blob, &msg); } if (!usable) { if (mono_aot_only && !mono_use_interpreter) { g_error ("Failed to load AOT module '%s' while running in aot-only mode: %s.\n", found_aot_name, msg); } else { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: module %s is unusable: %s.", found_aot_name, msg); } g_free (msg); g_free (found_aot_name); if (sofile) mono_dl_close (sofile); assembly->image->aot_module = NULL; return; } /* Sanity check */ align_double = MONO_ABI_ALIGNOF (double); align_int64 = MONO_ABI_ALIGNOF (gint64); g_assert (info->double_align == align_double); g_assert (info->long_align == align_int64); g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM); amodule = g_new0 (MonoAotModule, 1); amodule->aot_name = found_aot_name; amodule->assembly = assembly; memcpy (&amodule->info, info, sizeof (*info)); amodule->got = (void **)amodule->info.jit_got; amodule->llvm_got = (void **)amodule->info.llvm_got; amodule->globals = globals; amodule->sofile = sofile; amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL); amodule->extra_methods = g_hash_table_new (NULL, NULL); amodule->shared_got = g_new0 (gpointer, info->nshared_got_entries); if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) { for (i = 0; i < MONO_AOT_TABLE_NUM; ++i) amodule->tables [i] = aot_data + info->table_offsets [i]; } mono_os_mutex_init_recursive (&amodule->mutex); /* Read image table */ { guint32 table_len, i; char *table = NULL; if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) table = amodule->tables [MONO_AOT_TABLE_IMAGE_TABLE]; else table = (char *)info->image_table; g_assert (table); table_len = *(guint32*)table; table += sizeof (guint32); amodule->image_table = g_new0 (MonoImage*, table_len); amodule->image_names = g_new0 (MonoAssemblyName, table_len); amodule->image_guids = g_new0 (char*, table_len); amodule->image_table_len = table_len; for (i = 0; i < table_len; ++i) { MonoAssemblyName *aname = &(amodule->image_names [i]); aname->name = g_strdup (table); table += strlen (table) + 1; amodule->image_guids [i] = g_strdup (table); table += strlen (table) + 1; if (table [0] != 0) aname->culture = g_strdup (table); table += strlen (table) + 1; memcpy (aname->public_key_token, table, strlen (table) + 1); table += strlen (table) + 1; table = (char *)ALIGN_PTR_TO (table, 8); aname->flags = *(guint32*)table; table += 4; aname->major = *(guint32*)table; table += 4; aname->minor = *(guint32*)table; table += 4; aname->build = *(guint32*)table; table += 4; aname->revision = *(guint32*)table; table += 4; } } amodule->jit_code_start = (guint8 *)info->jit_code_start; amodule->jit_code_end = (guint8 *)info->jit_code_end; if (info->flags & MONO_AOT_FILE_FLAG_SEPARATE_DATA) { amodule->blob = amodule->tables [MONO_AOT_TABLE_BLOB]; amodule->method_info_offsets = amodule->tables [MONO_AOT_TABLE_METHOD_INFO_OFFSETS]; amodule->ex_info_offsets = amodule->tables [MONO_AOT_TABLE_EX_INFO_OFFSETS]; amodule->class_info_offsets = amodule->tables [MONO_AOT_TABLE_CLASS_INFO_OFFSETS]; amodule->class_name_table = amodule->tables [MONO_AOT_TABLE_CLASS_NAME]; amodule->extra_method_table = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_TABLE]; amodule->extra_method_info_offsets = amodule->tables [MONO_AOT_TABLE_EXTRA_METHOD_INFO_OFFSETS]; amodule->got_info_offsets = amodule->tables [MONO_AOT_TABLE_GOT_INFO_OFFSETS]; amodule->llvm_got_info_offsets = amodule->tables [MONO_AOT_TABLE_LLVM_GOT_INFO_OFFSETS]; } else { amodule->blob = info->blob; amodule->method_info_offsets = (guint32 *)info->method_info_offsets; amodule->ex_info_offsets = (guint32 *)info->ex_info_offsets; amodule->class_info_offsets = (guint32 *)info->class_info_offsets; amodule->class_name_table = (guint16 *)info->class_name_table; amodule->extra_method_table = (guint32 *)info->extra_method_table; amodule->extra_method_info_offsets = (guint32 *)info->extra_method_info_offsets; amodule->got_info_offsets = info->got_info_offsets; amodule->llvm_got_info_offsets = info->llvm_got_info_offsets; } amodule->unbox_trampolines = (guint32 *)info->unbox_trampolines; amodule->unbox_trampolines_end = (guint32 *)info->unbox_trampolines_end; amodule->unbox_trampoline_addresses = (guint32 *)info->unbox_trampoline_addresses; amodule->unwind_info = (guint8 *)info->unwind_info; amodule->mem_begin = amodule->jit_code_start; amodule->mem_end = (guint8 *)info->mem_end; amodule->plt = (guint8 *)info->plt; amodule->plt_end = (guint8 *)info->plt_end; amodule->mono_eh_frame = (guint8 *)info->mono_eh_frame; amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = (guint8 *)info->specific_trampolines; amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = (guint8 *)info->static_rgctx_trampolines; amodule->trampolines [MONO_AOT_TRAMP_IMT] = (guint8 *)info->imt_trampolines; amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = (guint8 *)info->gsharedvt_arg_trampolines; if (!strcmp (assembly->aname.name, "mscorlib")) mscorlib_aot_module = amodule; /* Compute method addresses */ amodule->methods = (void **)g_malloc0 (amodule->info.nmethods * sizeof (gpointer)); for (i = 0; i < amodule->info.nmethods; ++i) { void *addr = NULL; if (amodule->info.llvm_get_method) { gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method; addr = get_method (i); } /* method_addresses () contains a table of branches, since the ios linker can update those correctly */ if (!addr && amodule->info.method_addresses) { addr = get_call_table_entry (amodule->info.method_addresses, i); g_assert (addr); if (addr == amodule->info.method_addresses) addr = NULL; } if (addr == NULL) amodule->methods [i] = GINT_TO_POINTER (-1); else amodule->methods [i] = addr; } if (make_unreadable) { #ifndef TARGET_WIN32 guint8 *addr; guint8 *page_start, *page_end; int err, len; addr = amodule->mem_begin; g_assert (addr); len = amodule->mem_end - amodule->mem_begin; /* Round down in both directions to avoid modifying data which is not ours */ page_start = (guint8 *) (((gssize) (addr)) & ~ (mono_pagesize () - 1)) + mono_pagesize (); page_end = (guint8 *) (((gssize) (addr + len)) & ~ (mono_pagesize () - 1)); if (page_end > page_start) { err = mono_mprotect (page_start, (page_end - page_start), MONO_MMAP_NONE); g_assert (err == 0); } #endif } /* Compute the boundaries of LLVM code */ if (info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) compute_llvm_code_range (amodule, &amodule->llvm_code_start, &amodule->llvm_code_end); mono_aot_lock (); if (amodule->jit_code_start) { aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->jit_code_start); aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->jit_code_end); } if (amodule->llvm_code_start) { aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->llvm_code_start); aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->llvm_code_end); } g_hash_table_insert (aot_modules, assembly, amodule); mono_aot_unlock (); if (amodule->jit_code_start) mono_jit_info_add_aot_module (assembly->image, amodule->jit_code_start, amodule->jit_code_end); if (amodule->llvm_code_start) mono_jit_info_add_aot_module (assembly->image, amodule->llvm_code_start, amodule->llvm_code_end); assembly->image->aot_module = amodule; if (mono_aot_only && !mono_llvm_only) { char *code; find_amodule_symbol (amodule, "specific_trampolines_page", (gpointer *)&code); amodule->use_page_trampolines = code != NULL; /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/ } /* * Register the plt region as a single trampoline so we can unwind from this code */ mono_aot_tramp_info_register ( mono_tramp_info_create ( NULL, amodule->plt, amodule->plt_end - amodule->plt, NULL, mono_unwind_get_cie_program () ), NULL ); /* * Since we store methoddef and classdef tokens when referring to methods/classes in * referenced assemblies, we depend on the exact versions of the referenced assemblies. * MS calls this 'hard binding'. This means we have to load all referenced assemblies * non-lazily, since we can't handle out-of-date errors later. * The cached class info also depends on the exact assemblies. */ if (do_load_image) { for (i = 0; i < amodule->image_table_len; ++i) { MonoError error; load_image (amodule, i, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ } } if (amodule->out_of_date) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: Module %s is unusable because a dependency is out-of-date.", assembly->image->name); if (mono_aot_only) g_error ("Failed to load AOT module '%s' while running in aot-only mode because a dependency cannot be found or it is out of date.\n", found_aot_name); } else { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT: image '%s' found.", found_aot_name); } } /* * mono_aot_register_module: * * This should be called by embedding code to register AOT modules statically linked * into the executable. AOT_INFO should be the value of the * 'mono_aot_module__info' global symbol from the AOT module. */ void mono_aot_register_module (gpointer *aot_info) { gpointer *globals; char *aname; MonoAotFileInfo *info = (MonoAotFileInfo *)aot_info; g_assert (info->version == MONO_AOT_FILE_VERSION); if (!(info->flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) { globals = (void **)info->globals; g_assert (globals); } aname = (char *)info->assembly_name; /* This could be called before startup */ if (aot_modules) mono_aot_lock (); if (!static_aot_modules) static_aot_modules = g_hash_table_new (g_str_hash, g_str_equal); g_hash_table_insert (static_aot_modules, aname, info); if (aot_modules) mono_aot_unlock (); } void mono_aot_init (void) { mono_os_mutex_init_recursive (&aot_mutex); mono_os_mutex_init_recursive (&aot_page_mutex); aot_modules = g_hash_table_new (NULL, NULL); mono_install_assembly_load_hook (load_aot_module, NULL); mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size); char *lastaot = g_getenv ("MONO_LASTAOT"); if (lastaot) { mono_last_aot_method = atoi (lastaot); g_free (lastaot); } aot_cache_init (); } void mono_aot_cleanup (void) { if (aot_jit_icall_hash) g_hash_table_destroy (aot_jit_icall_hash); if (aot_modules) g_hash_table_destroy (aot_modules); } static gboolean decode_cached_class_info (MonoAotModule *module, MonoCachedClassInfo *info, guint8 *buf, guint8 **endbuf) { MonoError error; guint32 flags; MethodRef ref; gboolean res; info->vtable_size = decode_value (buf, &buf); if (info->vtable_size == -1) /* Generic type */ return FALSE; flags = decode_value (buf, &buf); info->ghcimpl = (flags >> 0) & 0x1; info->has_finalize = (flags >> 1) & 0x1; info->has_cctor = (flags >> 2) & 0x1; info->has_nested_classes = (flags >> 3) & 0x1; info->blittable = (flags >> 4) & 0x1; info->has_references = (flags >> 5) & 0x1; info->has_static_refs = (flags >> 6) & 0x1; info->no_special_static_fields = (flags >> 7) & 0x1; info->is_generic_container = (flags >> 8) & 0x1; if (info->has_cctor) { res = decode_method_ref (module, &ref, buf, &buf, &error); mono_error_assert_ok (&error); /* FIXME don't swallow the error */ if (!res) return FALSE; info->cctor_token = ref.token; } if (info->has_finalize) { res = decode_method_ref (module, &ref, buf, &buf, &error); mono_error_assert_ok (&error); /* FIXME don't swallow the error */ if (!res) return FALSE; info->finalize_image = ref.image; info->finalize_token = ref.token; } info->instance_size = decode_value (buf, &buf); info->class_size = decode_value (buf, &buf); info->packing_size = decode_value (buf, &buf); info->min_align = decode_value (buf, &buf); *endbuf = buf; return TRUE; } gpointer mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error) { int i; MonoClass *klass = vtable->klass; MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module; guint8 *info, *p; MonoCachedClassInfo class_info; gboolean err; MethodRef ref; gboolean res; gpointer addr; MonoError inner_error; error_init (error); if (MONO_CLASS_IS_INTERFACE (klass) || klass->rank || !amodule) return NULL; info = &amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)]; p = info; err = decode_cached_class_info (amodule, &class_info, p, &p); if (!err) return NULL; for (i = 0; i < slot; ++i) { decode_method_ref (amodule, &ref, p, &p, &inner_error); mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */ } res = decode_method_ref (amodule, &ref, p, &p, &inner_error); mono_error_cleanup (&inner_error); /* FIXME don't swallow the error */ if (!res) return NULL; if (ref.no_aot_trampoline) return NULL; if (mono_metadata_token_index (ref.token) == 0 || mono_metadata_token_table (ref.token) != MONO_TABLE_METHOD) return NULL; addr = mono_aot_get_method_from_token (domain, ref.image, ref.token, error); return addr; } gboolean mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res) { MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module; guint8 *p; gboolean err; if (klass->rank || !klass->type_token || !amodule) return FALSE; p = (guint8*)&amodule->blob [mono_aot_get_offset (amodule->class_info_offsets, mono_metadata_token_index (klass->type_token) - 1)]; err = decode_cached_class_info (amodule, res, p, &p); if (!err) return FALSE; return TRUE; } /** * mono_aot_get_class_from_name: * * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE, * using a cache stored in the AOT file. * Stores the resulting class in *KLASS if found, stores NULL otherwise. * * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was * found. */ gboolean mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass) { MonoAotModule *amodule = (MonoAotModule *)image->aot_module; guint16 *table, *entry; guint16 table_size; guint32 hash; char full_name_buf [1024]; char *full_name; const char *name2, *name_space2; MonoTableInfo *t; guint32 cols [MONO_TYPEDEF_SIZE]; GHashTable *nspace_table; if (!amodule || !amodule->class_name_table) return FALSE; amodule_lock (amodule); *klass = NULL; /* First look in the cache */ if (!amodule->name_cache) amodule->name_cache = g_hash_table_new (g_str_hash, g_str_equal); nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space); if (nspace_table) { *klass = (MonoClass *)g_hash_table_lookup (nspace_table, name); if (*klass) { amodule_unlock (amodule); return TRUE; } } table_size = amodule->class_name_table [0]; table = amodule->class_name_table + 1; if (name_space [0] == '\0') full_name = g_strdup_printf ("%s", name); else { if (strlen (name_space) + strlen (name) < 1000) { sprintf (full_name_buf, "%s.%s", name_space, name); full_name = full_name_buf; } else { full_name = g_strdup_printf ("%s.%s", name_space, name); } } hash = mono_metadata_str_hash (full_name) % table_size; if (full_name != full_name_buf) g_free (full_name); entry = &table [hash * 2]; if (entry [0] != 0) { t = &image->tables [MONO_TABLE_TYPEDEF]; while (TRUE) { guint32 index = entry [0]; guint32 next = entry [1]; guint32 token = mono_metadata_make_token (MONO_TABLE_TYPEDEF, index); name_table_accesses ++; mono_metadata_decode_row (t, index - 1, cols, MONO_TYPEDEF_SIZE); name2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]); name_space2 = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]); if (!strcmp (name, name2) && !strcmp (name_space, name_space2)) { MonoError error; amodule_unlock (amodule); *klass = mono_class_get_checked (image, token, &error); if (!mono_error_ok (&error)) mono_error_cleanup (&error); /* FIXME don't swallow the error */ /* Add to cache */ if (*klass) { amodule_lock (amodule); nspace_table = (GHashTable *)g_hash_table_lookup (amodule->name_cache, name_space); if (!nspace_table) { nspace_table = g_hash_table_new (g_str_hash, g_str_equal); g_hash_table_insert (amodule->name_cache, (char*)name_space2, nspace_table); } g_hash_table_insert (nspace_table, (char*)name2, *klass); amodule_unlock (amodule); } return TRUE; } if (next != 0) { entry = &table [next * 2]; } else { break; } } } amodule_unlock (amodule); return TRUE; } /* Compute the boundaries of the LLVM code for AMODULE. */ static void compute_llvm_code_range (MonoAotModule *amodule, guint8 **code_start, guint8 **code_end) { guint8 *p; int version, fde_count; gint32 *table; if (amodule->info.llvm_get_method) { gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method; *code_start = (guint8 *)get_method (-1); *code_end = (guint8 *)get_method (-2); g_assert (*code_end > *code_start); return; } g_assert (amodule->mono_eh_frame); p = amodule->mono_eh_frame; /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */ /* Header */ version = *p; g_assert (version == 3); p ++; p ++; p = (guint8 *)ALIGN_PTR_TO (p, 4); fde_count = *(guint32*)p; p += 4; table = (gint32*)p; if (fde_count > 0) { *code_start = (guint8 *)amodule->methods [table [0]]; *code_end = (guint8*)amodule->methods [table [(fde_count - 1) * 2]] + table [fde_count * 2]; } else { *code_start = NULL; *code_end = NULL; } } static gboolean is_llvm_code (MonoAotModule *amodule, guint8 *code) { if ((guint8*)code >= amodule->llvm_code_start && (guint8*)code < amodule->llvm_code_end) return TRUE; else return FALSE; } static gboolean is_thumb_code (MonoAotModule *amodule, guint8 *code) { if (is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_THUMB)) return TRUE; else return FALSE; } /* * decode_llvm_mono_eh_frame: * * Decode the EH information emitted by our modified LLVM compiler and construct a * MonoJitInfo structure from it. * If JINFO is NULL, set OUT_LLVM_CLAUSES to the number of llvm level clauses. * This function is async safe when called in async context. */ static void decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain, MonoJitInfo *jinfo, guint8 *code, guint32 code_len, MonoJitExceptionInfo *clauses, int num_clauses, GSList **nesting, int *this_reg, int *this_offset, int *out_llvm_clauses) { guint8 *p, *code1, *code2; guint8 *fde, *cie, *code_start, *code_end; int version, fde_count; gint32 *table; int i, pos, left, right; MonoJitExceptionInfo *ei; guint32 fde_len, ei_len, nested_len, nindex; gpointer *type_info; MonoLLVMFDEInfo info; guint8 *unw_info; gboolean async; async = mono_thread_info_is_async_context (); if (!amodule->mono_eh_frame) { if (!jinfo) { *out_llvm_clauses = num_clauses; return; } memcpy (jinfo->clauses, clauses, num_clauses * sizeof (MonoJitExceptionInfo)); return; } g_assert (amodule->mono_eh_frame && code); p = amodule->mono_eh_frame; /* p points to data emitted by LLVM in DwarfMonoException::EmitMonoEHFrame () */ /* Header */ version = *p; g_assert (version == 3); p ++; /* func_encoding = *p; */ p ++; p = (guint8 *)ALIGN_PTR_TO (p, 4); fde_count = *(guint32*)p; p += 4; table = (gint32*)p; /* There is +1 entry in the table */ cie = p + ((fde_count + 1) * 8); /* Binary search in the table to find the entry for code */ left = 0; right = fde_count; while (TRUE) { pos = (left + right) / 2; /* The table contains method index/fde offset pairs */ g_assert (table [(pos * 2)] != -1); code1 = (guint8 *)amodule->methods [table [(pos * 2)]]; if (pos + 1 == fde_count) { code2 = amodule->llvm_code_end; } else { g_assert (table [(pos + 1) * 2] != -1); code2 = (guint8 *)amodule->methods [table [(pos + 1) * 2]]; } if (code < code1) right = pos; else if (code >= code2) left = pos + 1; else break; } code_start = (guint8 *)amodule->methods [table [(pos * 2)]]; if (pos + 1 == fde_count) { /* The +1 entry in the table contains the length of the last method */ int len = table [(pos + 1) * 2]; code_end = code_start + len; } else { code_end = (guint8 *)amodule->methods [table [(pos + 1) * 2]]; } if (!code_len) code_len = code_end - code_start; g_assert (code >= code_start && code < code_end); if (is_thumb_code (amodule, code_start)) /* Clear thumb flag */ code_start = (guint8*)(((mgreg_t)code_start) & ~1); fde = amodule->mono_eh_frame + table [(pos * 2) + 1]; /* This won't overflow because there is +1 entry in the table */ fde_len = table [(pos * 2) + 2 + 1] - table [(pos * 2) + 1]; /* Compute lengths */ mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info, NULL, NULL, NULL); if (async) { /* These are leaked, but the leak is bounded */ ei = mono_domain_alloc0_lock_free (domain, info.ex_info_len * sizeof (MonoJitExceptionInfo)); type_info = mono_domain_alloc0_lock_free (domain, info.ex_info_len * sizeof (gpointer)); unw_info = mono_domain_alloc0_lock_free (domain, info.unw_info_len); } else { ei = (MonoJitExceptionInfo *)g_malloc0 (info.ex_info_len * sizeof (MonoJitExceptionInfo)); type_info = (gpointer *)g_malloc0 (info.ex_info_len * sizeof (gpointer)); unw_info = (guint8*)g_malloc0 (info.unw_info_len); } mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info, ei, type_info, unw_info); ei_len = info.ex_info_len; *this_reg = info.this_reg; *this_offset = info.this_offset; /* * LLVM might represent one IL region with multiple regions. */ /* Count number of nested clauses */ nested_len = 0; for (i = 0; i < ei_len; ++i) { /* This might be unaligned */ gint32 cindex1 = read32 (type_info [i]); GSList *l; for (l = nesting [cindex1]; l; l = l->next) nested_len ++; } if (!jinfo) { *out_llvm_clauses = ei_len + nested_len; return; } /* Store the unwind info addr/length in the MonoJitInfo structure itself so its async safe */ MonoUnwindJitInfo *jinfo_unwind = mono_jit_info_get_unwind_info (jinfo); g_assert (jinfo_unwind); jinfo_unwind->unw_info = unw_info; jinfo_unwind->unw_info_len = info.unw_info_len; for (i = 0; i < ei_len; ++i) { /* * clauses contains the original IL exception info saved by the AOT * compiler, we have to combine that with the information produced by LLVM */ /* The type_info entries contain IL clause indexes */ int clause_index = read32 (type_info [i]); MonoJitExceptionInfo *jei = &jinfo->clauses [i]; MonoJitExceptionInfo *orig_jei = &clauses [clause_index]; g_assert (clause_index < num_clauses); jei->flags = orig_jei->flags; jei->data.catch_class = orig_jei->data.catch_class; jei->try_start = ei [i].try_start; jei->try_end = ei [i].try_end; jei->handler_start = ei [i].handler_start; jei->clause_index = clause_index; if (is_thumb_code (amodule, (guint8 *)jei->try_start)) { jei->try_start = (void*)((mgreg_t)jei->try_start & ~1); jei->try_end = (void*)((mgreg_t)jei->try_end & ~1); /* Make sure we transition to thumb when a handler starts */ jei->handler_start = (void*)((mgreg_t)jei->handler_start + 1); } } /* See exception_cb () in mini-llvm.c as to why this is needed */ nindex = ei_len; for (i = 0; i < ei_len; ++i) { gint32 cindex1 = read32 (type_info [i]); GSList *l; for (l = nesting [cindex1]; l; l = l->next) { gint32 nesting_cindex = GPOINTER_TO_INT (l->data); MonoJitExceptionInfo *nesting_ei; MonoJitExceptionInfo *nesting_clause = &clauses [nesting_cindex]; nesting_ei = &jinfo->clauses [nindex]; nindex ++; memcpy (nesting_ei, &jinfo->clauses [i], sizeof (MonoJitExceptionInfo)); nesting_ei->flags = nesting_clause->flags; nesting_ei->data.catch_class = nesting_clause->data.catch_class; nesting_ei->clause_index = nesting_cindex; } } g_assert (nindex == ei_len + nested_len); } static gpointer alloc0_jit_info_data (MonoDomain *domain, int size, gboolean async_context) { gpointer res; if (async_context) { res = mono_domain_alloc0_lock_free (domain, size); InterlockedExchangeAdd (&async_jit_info_size, size); } else { res = mono_domain_alloc0 (domain, size); } return res; } /* * LOCKING: Acquires the domain lock. * In async context, this is async safe. */ static MonoJitInfo* decode_exception_debug_info (MonoAotModule *amodule, MonoDomain *domain, MonoMethod *method, guint8* ex_info, guint8 *code, guint32 code_len) { MonoError error; int i, buf_len, num_clauses, len; MonoJitInfo *jinfo; MonoJitInfoFlags flags = JIT_INFO_NONE; guint unwind_info, eflags; gboolean has_generic_jit_info, has_dwarf_unwind_info, has_clauses, has_seq_points, has_try_block_holes, has_arch_eh_jit_info; gboolean from_llvm, has_gc_map; guint8 *p; int try_holes_info_size, num_holes; int this_reg = 0, this_offset = 0; gboolean async; /* Load the method info from the AOT file */ async = mono_thread_info_is_async_context (); p = ex_info; eflags = decode_value (p, &p); has_generic_jit_info = (eflags & 1) != 0; has_dwarf_unwind_info = (eflags & 2) != 0; has_clauses = (eflags & 4) != 0; has_seq_points = (eflags & 8) != 0; from_llvm = (eflags & 16) != 0; has_try_block_holes = (eflags & 32) != 0; has_gc_map = (eflags & 64) != 0; has_arch_eh_jit_info = (eflags & 128) != 0; if (has_dwarf_unwind_info) { unwind_info = decode_value (p, &p); g_assert (unwind_info < (1 << 30)); } else { unwind_info = decode_value (p, &p); } if (has_generic_jit_info) flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_GENERIC_JIT_INFO); if (has_try_block_holes) { num_holes = decode_value (p, &p); flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_TRY_BLOCK_HOLES); try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo); } else { num_holes = try_holes_info_size = 0; } if (has_arch_eh_jit_info) { flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_ARCH_EH_INFO); /* Overwrite the original code_len which includes alignment padding */ code_len = decode_value (p, &p); } /* Exception table */ if (has_clauses) num_clauses = decode_value (p, &p); else num_clauses = 0; if (from_llvm) { MonoJitExceptionInfo *clauses; GSList **nesting; /* * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame * section. */ if (async) { if (num_clauses < 16) { clauses = g_newa (MonoJitExceptionInfo, num_clauses); nesting = g_newa (GSList*, num_clauses); } else { clauses = alloc0_jit_info_data (domain, sizeof (MonoJitExceptionInfo) * num_clauses, TRUE); nesting = alloc0_jit_info_data (domain, sizeof (GSList*) * num_clauses, TRUE); } memset (clauses, 0, sizeof (MonoJitExceptionInfo) * num_clauses); memset (nesting, 0, sizeof (GSList*) * num_clauses); } else { clauses = g_new0 (MonoJitExceptionInfo, num_clauses); nesting = g_new0 (GSList*, num_clauses); } for (i = 0; i < num_clauses; ++i) { MonoJitExceptionInfo *ei = &clauses [i]; ei->flags = decode_value (p, &p); if (!(ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)) { int len = decode_value (p, &p); if (len > 0) { if (async) { p += len; } else { ei->data.catch_class = decode_klass_ref (amodule, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ } } } ei->clause_index = i; ei->try_offset = decode_value (p, &p); ei->try_len = decode_value (p, &p); ei->handler_offset = decode_value (p, &p); ei->handler_len = decode_value (p, &p); /* Read the list of nesting clauses */ while (TRUE) { int nesting_index = decode_value (p, &p); if (nesting_index == -1) break; // FIXME: async g_assert (!async); nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index)); } } flags |= JIT_INFO_HAS_UNWIND_INFO; int num_llvm_clauses; /* Get the length first */ decode_llvm_mono_eh_frame (amodule, domain, NULL, code, code_len, clauses, num_clauses, nesting, &this_reg, &this_offset, &num_llvm_clauses); len = mono_jit_info_size (flags, num_llvm_clauses, num_holes); jinfo = (MonoJitInfo *)alloc0_jit_info_data (domain, len, async); mono_jit_info_init (jinfo, method, code, code_len, flags, num_llvm_clauses, num_holes); decode_llvm_mono_eh_frame (amodule, domain, jinfo, code, code_len, clauses, num_clauses, nesting, &this_reg, &this_offset, NULL); if (!async) { g_free (clauses); for (i = 0; i < num_clauses; ++i) g_slist_free (nesting [i]); g_free (nesting); } jinfo->from_llvm = 1; } else { len = mono_jit_info_size (flags, num_clauses, num_holes); jinfo = (MonoJitInfo *)alloc0_jit_info_data (domain, len, async); mono_jit_info_init (jinfo, method, code, code_len, flags, num_clauses, num_holes); for (i = 0; i < jinfo->num_clauses; ++i) { MonoJitExceptionInfo *ei = &jinfo->clauses [i]; ei->flags = decode_value (p, &p); #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG /* Not used for catch clauses */ if (ei->flags != MONO_EXCEPTION_CLAUSE_NONE) ei->exvar_offset = decode_value (p, &p); #else ei->exvar_offset = decode_value (p, &p); #endif if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY) ei->data.filter = code + decode_value (p, &p); else { int len = decode_value (p, &p); if (len > 0) { if (async) { p += len; } else { ei->data.catch_class = decode_klass_ref (amodule, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ } } } ei->try_start = code + decode_value (p, &p); ei->try_end = code + decode_value (p, &p); ei->handler_start = code + decode_value (p, &p); } jinfo->unwind_info = unwind_info; jinfo->domain_neutral = 0; jinfo->from_aot = 1; } if (has_try_block_holes) { MonoTryBlockHoleTableJitInfo *table; g_assert (jinfo->has_try_block_holes); table = mono_jit_info_get_try_block_hole_table_info (jinfo); g_assert (table); table->num_holes = (guint16)num_holes; for (i = 0; i < num_holes; ++i) { MonoTryBlockHoleJitInfo *hole = &table->holes [i]; hole->clause = decode_value (p, &p); hole->length = decode_value (p, &p); hole->offset = decode_value (p, &p); } } if (has_arch_eh_jit_info) { MonoArchEHJitInfo *eh_info; g_assert (jinfo->has_arch_eh_info); eh_info = mono_jit_info_get_arch_eh_info (jinfo); eh_info->stack_size = decode_value (p, &p); eh_info->epilog_size = decode_value (p, &p); } if (async) { /* The rest is not needed in async mode */ jinfo->async = TRUE; jinfo->d.aot_info = amodule; // FIXME: Cache return jinfo; } if (has_generic_jit_info) { MonoGenericJitInfo *gi; int len; g_assert (jinfo->has_generic_jit_info); gi = mono_jit_info_get_generic_jit_info (jinfo); g_assert (gi); gi->nlocs = decode_value (p, &p); if (gi->nlocs) { gi->locations = (MonoDwarfLocListEntry *)alloc0_jit_info_data (domain, gi->nlocs * sizeof (MonoDwarfLocListEntry), async); for (i = 0; i < gi->nlocs; ++i) { MonoDwarfLocListEntry *entry = &gi->locations [i]; entry->is_reg = decode_value (p, &p); entry->reg = decode_value (p, &p); if (!entry->is_reg) entry->offset = decode_value (p, &p); if (i > 0) entry->from = decode_value (p, &p); entry->to = decode_value (p, &p); } gi->has_this = 1; } else { if (from_llvm) { gi->has_this = this_reg != -1; gi->this_reg = this_reg; gi->this_offset = this_offset; } else { gi->has_this = decode_value (p, &p); gi->this_reg = decode_value (p, &p); gi->this_offset = decode_value (p, &p); } } len = decode_value (p, &p); if (async) { p += len; } else { jinfo->d.method = decode_resolve_method_ref (amodule, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ } gi->generic_sharing_context = alloc0_jit_info_data (domain, sizeof (MonoGenericSharingContext), async); if (decode_value (p, &p)) { /* gsharedvt */ MonoGenericSharingContext *gsctx = gi->generic_sharing_context; gsctx->is_gsharedvt = TRUE; } } if (method && has_seq_points) { MonoSeqPointInfo *seq_points; p += mono_seq_point_info_read (&seq_points, p, FALSE); mono_domain_lock (domain); /* This could be set already since this function can be called more than once for the same method */ if (!g_hash_table_lookup (domain_jit_info (domain)->seq_points, method)) g_hash_table_insert (domain_jit_info (domain)->seq_points, method, seq_points); else mono_seq_point_info_free (seq_points); mono_domain_unlock (domain); } /* Load debug info */ buf_len = decode_value (p, &p); if (!async) mono_debug_add_aot_method (domain, method, code, p, buf_len); p += buf_len; if (has_gc_map) { int map_size = decode_value (p, &p); /* The GC map requires 4 bytes of alignment */ while ((guint64)(gsize)p % 4) p ++; jinfo->gc_info = p; p += map_size; } if (amodule != jinfo->d.method->klass->image->aot_module) { mono_aot_lock (); if (!ji_to_amodule) ji_to_amodule = g_hash_table_new (NULL, NULL); g_hash_table_insert (ji_to_amodule, jinfo, amodule); mono_aot_unlock (); } return jinfo; } static gboolean amodule_contains_code_addr (MonoAotModule *amodule, guint8 *code) { return (code >= amodule->jit_code_start && code <= amodule->jit_code_end) || (code >= amodule->llvm_code_start && code <= amodule->llvm_code_end); } /* * mono_aot_get_unwind_info: * * Return a pointer to the DWARF unwind info belonging to JI. */ guint8* mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len) { MonoAotModule *amodule; guint8 *p; guint8 *code = (guint8 *)ji->code_start; if (ji->async) amodule = (MonoAotModule *)ji->d.aot_info; else amodule = (MonoAotModule *)jinfo_get_method (ji)->klass->image->aot_module; g_assert (amodule); g_assert (ji->from_aot); if (!amodule_contains_code_addr (amodule, code)) { /* ji belongs to a different aot module than amodule */ mono_aot_lock (); g_assert (ji_to_amodule); amodule = (MonoAotModule *)g_hash_table_lookup (ji_to_amodule, ji); g_assert (amodule); g_assert (amodule_contains_code_addr (amodule, code)); mono_aot_unlock (); } p = amodule->unwind_info + ji->unwind_info; *unwind_info_len = decode_value (p, &p); return p; } static void msort_method_addresses_internal (gpointer *array, int *indexes, int lo, int hi, gpointer *scratch, int *scratch_indexes) { int mid = (lo + hi) / 2; int i, t_lo, t_hi; if (lo >= hi) return; if (hi - lo < 32) { for (i = lo; i < hi; ++i) if (array [i] > array [i + 1]) break; if (i == hi) /* Already sorted */ return; } msort_method_addresses_internal (array, indexes, lo, mid, scratch, scratch_indexes); msort_method_addresses_internal (array, indexes, mid + 1, hi, scratch, scratch_indexes); if (array [mid] < array [mid + 1]) return; /* Merge */ t_lo = lo; t_hi = mid + 1; for (i = lo; i <= hi; i ++) { if (t_lo <= mid && ((t_hi > hi) || array [t_lo] < array [t_hi])) { scratch [i] = array [t_lo]; scratch_indexes [i] = indexes [t_lo]; t_lo ++; } else { scratch [i] = array [t_hi]; scratch_indexes [i] = indexes [t_hi]; t_hi ++; } } for (i = lo; i <= hi; ++i) { array [i] = scratch [i]; indexes [i] = scratch_indexes [i]; } } static void msort_method_addresses (gpointer *array, int *indexes, int len) { gpointer *scratch; int *scratch_indexes; scratch = g_new (gpointer, len); scratch_indexes = g_new (int, len); msort_method_addresses_internal (array, indexes, 0, len - 1, scratch, scratch_indexes); g_free (scratch); g_free (scratch_indexes); } /* * mono_aot_find_jit_info: * * In async context, the resulting MonoJitInfo will not have its method field set, and it will not be added * to the jit info tables. * FIXME: Large sizes in the lock free allocator */ MonoJitInfo * mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr) { MonoError error; int pos, left, right, code_len; int method_index, table_len; guint32 token; MonoAotModule *amodule = (MonoAotModule *)image->aot_module; MonoMethod *method = NULL; MonoJitInfo *jinfo; guint8 *code, *ex_info, *p; guint32 *table; int nmethods; gpointer *methods; guint8 *code1, *code2; int methods_len, i; gboolean async; if (!amodule) return NULL; nmethods = amodule->info.nmethods; if (domain != mono_get_root_domain ()) /* FIXME: */ return NULL; if (!amodule_contains_code_addr (amodule, (guint8 *)addr)) return NULL; async = mono_thread_info_is_async_context (); /* Compute a sorted table mapping code to method indexes. */ if (!amodule->sorted_methods) { // FIXME: async gpointer *methods = g_new0 (gpointer, nmethods); int *method_indexes = g_new0 (int, nmethods); int methods_len = 0; for (i = 0; i < nmethods; ++i) { /* Skip the -1 entries to speed up sorting */ if (amodule->methods [i] == GINT_TO_POINTER (-1)) continue; methods [methods_len] = amodule->methods [i]; method_indexes [methods_len] = i; methods_len ++; } /* Use a merge sort as this is mostly sorted */ msort_method_addresses (methods, method_indexes, methods_len); for (i = 0; i < methods_len -1; ++i) g_assert (methods [i] <= methods [i + 1]); amodule->sorted_methods_len = methods_len; if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_methods, methods, NULL) != NULL) /* Somebody got in before us */ g_free (methods); if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_method_indexes, method_indexes, NULL) != NULL) /* Somebody got in before us */ g_free (method_indexes); } /* Binary search in the sorted_methods table */ methods = amodule->sorted_methods; methods_len = amodule->sorted_methods_len; code = (guint8 *)addr; left = 0; right = methods_len; while (TRUE) { pos = (left + right) / 2; code1 = (guint8 *)methods [pos]; if (pos + 1 == methods_len) { if (code1 >= amodule->jit_code_start && code1 < amodule->jit_code_end) code2 = amodule->jit_code_end; else code2 = amodule->llvm_code_end; } else { code2 = (guint8 *)methods [pos + 1]; } if (code < code1) right = pos; else if (code >= code2) left = pos + 1; else break; } g_assert (addr >= methods [pos]); if (pos + 1 < methods_len) g_assert (addr < methods [pos + 1]); method_index = amodule->sorted_method_indexes [pos]; /* In async mode, jinfo is not added to the normal jit info table, so have to cache it ourselves */ if (async) { JitInfoMap *table = amodule->async_jit_info_table; int len; if (table) { len = table [0].method_index; for (i = 1; i < len; ++i) { if (table [i].method_index == method_index) return table [i].jinfo; } } } code = (guint8 *)amodule->methods [method_index]; ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)]; if (pos == methods_len - 1) { if (code >= amodule->jit_code_start && code < amodule->jit_code_end) code_len = amodule->jit_code_end - code; else code_len = amodule->llvm_code_end - code; } else { code_len = (guint8*)methods [pos + 1] - (guint8*)methods [pos]; } g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len); /* Might be a wrapper/extra method */ if (!async) { if (amodule->extra_methods) { amodule_lock (amodule); method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index)); amodule_unlock (amodule); } else { method = NULL; } if (!method) { if (method_index >= image->tables [MONO_TABLE_METHOD].rows) { /* * This is hit for extra methods which are called directly, so they are * not in amodule->extra_methods. */ table_len = amodule->extra_method_info_offsets [0]; table = amodule->extra_method_info_offsets + 1; left = 0; right = table_len; pos = 0; /* Binary search */ while (TRUE) { pos = ((left + right) / 2); g_assert (pos < table_len); if (table [pos * 2] < method_index) left = pos + 1; else if (table [pos * 2] > method_index) right = pos; else break; } p = amodule->blob + table [(pos * 2) + 1]; method = decode_resolve_method_ref (amodule, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!method) /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */ return NULL; } else { MonoError error; token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1); method = mono_get_method_checked (image, token, NULL, NULL, &error); if (!method) g_error ("AOT runtime could not load method due to %s", mono_error_get_message (&error)); /* FIXME don't swallow the error */ } } /* FIXME: */ g_assert (method); } //printf ("F: %s\n", mono_method_full_name (method, TRUE)); jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, code, code_len); g_assert ((guint8*)addr >= (guint8*)jinfo->code_start); /* Add it to the normal JitInfo tables */ if (async) { JitInfoMap *old_table, *new_table; int len; /* * Use a simple inmutable table with linear search to cache async jit info entries. * This assumes that the number of entries is small. */ while (TRUE) { /* Copy the table, adding a new entry at the end */ old_table = amodule->async_jit_info_table; if (old_table) len = old_table[0].method_index; else len = 1; new_table = (JitInfoMap *)alloc0_jit_info_data (domain, (len + 1) * sizeof (JitInfoMap), async); if (old_table) memcpy (new_table, old_table, len * sizeof (JitInfoMap)); new_table [0].method_index = len + 1; new_table [len].method_index = method_index; new_table [len].jinfo = jinfo; /* Publish it */ mono_memory_barrier (); if (InterlockedCompareExchangePointer ((volatile gpointer *)&amodule->async_jit_info_table, new_table, old_table) == old_table) break; } } else { mono_jit_info_table_add (domain, jinfo); } if ((guint8*)addr >= (guint8*)jinfo->code_start + jinfo->code_size) /* addr is in the padding between methods, see the adjustment of code_size in decode_exception_debug_info () */ return NULL; return jinfo; } static gboolean decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf) { MonoError error; guint8 *p = buf; gpointer *table; MonoImage *image; int i; switch (ji->type) { case MONO_PATCH_INFO_METHOD: case MONO_PATCH_INFO_METHOD_JUMP: case MONO_PATCH_INFO_ICALL_ADDR: case MONO_PATCH_INFO_ICALL_ADDR_CALL: case MONO_PATCH_INFO_METHOD_RGCTX: case MONO_PATCH_INFO_METHOD_CODE_SLOT: { MethodRef ref; gboolean res; res = decode_method_ref (aot_module, &ref, p, &p, &error); mono_error_assert_ok (&error); /* FIXME don't swallow the error */ if (!res) goto cleanup; if (!ref.method && !mono_aot_only && !ref.no_aot_trampoline && (ji->type == MONO_PATCH_INFO_METHOD) && (mono_metadata_token_table (ref.token) == MONO_TABLE_METHOD)) { ji->data.target = mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref.image, ref.token)); ji->type = MONO_PATCH_INFO_ABS; } else { if (ref.method) { ji->data.method = ref.method; }else { MonoError error; ji->data.method = mono_get_method_checked (ref.image, ref.token, NULL, NULL, &error); if (!ji->data.method) g_error ("AOT Runtime could not load method due to %s", mono_error_get_message (&error)); /* FIXME don't swallow the error */ } g_assert (ji->data.method); mono_class_init (ji->data.method->klass); } break; } case MONO_PATCH_INFO_INTERNAL_METHOD: case MONO_PATCH_INFO_JIT_ICALL_ADDR: case MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL: { guint32 len = decode_value (p, &p); ji->data.name = (char*)p; p += len + 1; break; } case MONO_PATCH_INFO_METHODCONST: /* Shared */ ji->data.method = decode_resolve_method_ref (aot_module, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!ji->data.method) goto cleanup; break; case MONO_PATCH_INFO_VTABLE: case MONO_PATCH_INFO_CLASS: case MONO_PATCH_INFO_IID: case MONO_PATCH_INFO_ADJUSTED_IID: /* Shared */ ji->data.klass = decode_klass_ref (aot_module, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!ji->data.klass) goto cleanup; break; case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE: ji->data.del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (mp, sizeof (MonoDelegateClassMethodPair)); ji->data.del_tramp->klass = decode_klass_ref (aot_module, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!ji->data.del_tramp->klass) goto cleanup; if (decode_value (p, &p)) { ji->data.del_tramp->method = decode_resolve_method_ref (aot_module, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!ji->data.del_tramp->method) goto cleanup; } ji->data.del_tramp->is_virtual = decode_value (p, &p) ? TRUE : FALSE; break; case MONO_PATCH_INFO_IMAGE: ji->data.image = load_image (aot_module, decode_value (p, &p), &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!ji->data.image) goto cleanup; break; case MONO_PATCH_INFO_FIELD: case MONO_PATCH_INFO_SFLDA: /* Shared */ ji->data.field = decode_field_info (aot_module, p, &p); if (!ji->data.field) goto cleanup; break; case MONO_PATCH_INFO_SWITCH: ji->data.table = (MonoJumpInfoBBTable *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable)); ji->data.table->table_size = decode_value (p, &p); table = (void **)mono_domain_alloc (mono_domain_get (), sizeof (gpointer) * ji->data.table->table_size); ji->data.table->table = (MonoBasicBlock**)table; for (i = 0; i < ji->data.table->table_size; i++) table [i] = (gpointer)(gssize)decode_value (p, &p); break; case MONO_PATCH_INFO_R4: { guint32 val; ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (float)); val = decode_value (p, &p); *(float*)ji->data.target = *(float*)&val; break; } case MONO_PATCH_INFO_R8: { guint32 val [2]; guint64 v; ji->data.target = mono_domain_alloc0 (mono_domain_get (), sizeof (double)); val [0] = decode_value (p, &p); val [1] = decode_value (p, &p); v = ((guint64)val [1] << 32) | ((guint64)val [0]); *(double*)ji->data.target = *(double*)&v; break; } case MONO_PATCH_INFO_LDSTR: image = load_image (aot_module, decode_value (p, &p), &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!image) goto cleanup; ji->data.token = mono_jump_info_token_new (mp, image, MONO_TOKEN_STRING + decode_value (p, &p)); break; case MONO_PATCH_INFO_RVA: case MONO_PATCH_INFO_DECLSEC: case MONO_PATCH_INFO_LDTOKEN: case MONO_PATCH_INFO_TYPE_FROM_HANDLE: /* Shared */ image = load_image (aot_module, decode_value (p, &p), &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!image) goto cleanup; ji->data.token = mono_jump_info_token_new (mp, image, decode_value (p, &p)); ji->data.token->has_context = decode_value (p, &p); if (ji->data.token->has_context) { gboolean res = decode_generic_context (aot_module, &ji->data.token->context, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!res) goto cleanup; } break; case MONO_PATCH_INFO_EXC_NAME: ji->data.klass = decode_klass_ref (aot_module, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!ji->data.klass) goto cleanup; ji->data.name = ji->data.klass->name; break; case MONO_PATCH_INFO_METHOD_REL: ji->data.offset = decode_value (p, &p); break; case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG: case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR: case MONO_PATCH_INFO_GC_NURSERY_START: case MONO_PATCH_INFO_GC_NURSERY_BITS: case MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT: break; case MONO_PATCH_INFO_CASTCLASS_CACHE: ji->data.index = decode_value (p, &p); break; case MONO_PATCH_INFO_RGCTX_FETCH: case MONO_PATCH_INFO_RGCTX_SLOT_INDEX: { gboolean res; MonoJumpInfoRgctxEntry *entry; guint32 offset, val; guint8 *p2; offset = decode_value (p, &p); val = decode_value (p, &p); entry = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry)); p2 = aot_module->blob + offset; entry->method = decode_resolve_method_ref (aot_module, p2, &p2, &error); entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE; entry->info_type = (MonoRgctxInfoType)((val >> 1) & 0xff); entry->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo)); entry->data->type = (MonoJumpInfoType)((val >> 9) & 0xff); mono_error_cleanup (&error); /* FIXME don't swallow the error */ res = decode_patch (aot_module, mp, entry->data, p, &p); if (!res) goto cleanup; ji->data.rgctx_entry = entry; break; } case MONO_PATCH_INFO_SEQ_POINT_INFO: case MONO_PATCH_INFO_AOT_MODULE: case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR: break; case MONO_PATCH_INFO_SIGNATURE: case MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER: ji->data.target = decode_signature (aot_module, p, &p); break; case MONO_PATCH_INFO_GSHAREDVT_CALL: { MonoJumpInfoGSharedVtCall *info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoGSharedVtCall)); info->sig = decode_signature (aot_module, p, &p); g_assert (info->sig); info->method = decode_resolve_method_ref (aot_module, p, &p, &error); mono_error_assert_ok (&error); /* FIXME don't swallow the error */ ji->data.target = info; break; } case MONO_PATCH_INFO_GSHAREDVT_METHOD: { MonoGSharedVtMethodInfo *info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (mp, sizeof (MonoGSharedVtMethodInfo)); int i; info->method = decode_resolve_method_ref (aot_module, p, &p, &error); mono_error_assert_ok (&error); /* FIXME don't swallow the error */ info->num_entries = decode_value (p, &p); info->count_entries = info->num_entries; info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (mp, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->num_entries); for (i = 0; i < info->num_entries; ++i) { MonoRuntimeGenericContextInfoTemplate *template_ = &info->entries [i]; template_->info_type = (MonoRgctxInfoType)decode_value (p, &p); switch (mini_rgctx_info_type_to_patch_info_type (template_->info_type)) { case MONO_PATCH_INFO_CLASS: { MonoClass *klass = decode_klass_ref (aot_module, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ if (!klass) goto cleanup; template_->data = &klass->byval_arg; break; } case MONO_PATCH_INFO_FIELD: template_->data = decode_field_info (aot_module, p, &p); if (!template_->data) goto cleanup; break; default: g_assert_not_reached (); break; } } ji->data.target = info; break; } case MONO_PATCH_INFO_LDSTR_LIT: { int len = decode_value (p, &p); char *s; s = (char *)mono_mempool_alloc0 (mp, len + 1); memcpy (s, p, len + 1); p += len + 1; ji->data.target = s; break; } case MONO_PATCH_INFO_VIRT_METHOD: { MonoJumpInfoVirtMethod *info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoVirtMethod)); info->klass = decode_klass_ref (aot_module, p, &p, &error); mono_error_assert_ok (&error); /* FIXME don't swallow the error */ info->method = decode_resolve_method_ref (aot_module, p, &p, &error); mono_error_assert_ok (&error); /* FIXME don't swallow the error */ ji->data.target = info; break; } case MONO_PATCH_INFO_GC_SAFE_POINT_FLAG: case MONO_PATCH_INFO_JIT_THREAD_ATTACH: break; case MONO_PATCH_INFO_GET_TLS_TRAMP: case MONO_PATCH_INFO_SET_TLS_TRAMP: case MONO_PATCH_INFO_AOT_JIT_INFO: ji->data.index = decode_value (p, &p); break; default: g_warning ("unhandled type %d", ji->type); g_assert_not_reached (); } *endbuf = p; return TRUE; cleanup: return FALSE; } /* * decode_patches: * * Decode a list of patches identified by the got offsets in GOT_OFFSETS. Return an array of * MonoJumpInfo structures allocated from MP. */ static MonoJumpInfo* decode_patches (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 *got_offsets) { MonoJumpInfo *patches; MonoJumpInfo *ji; gpointer *got; guint32 *got_info_offsets; int i; gboolean res; if (llvm) { got = amodule->llvm_got; got_info_offsets = (guint32 *)amodule->llvm_got_info_offsets; } else { got = amodule->got; got_info_offsets = (guint32 *)amodule->got_info_offsets; } patches = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches); for (i = 0; i < n_patches; ++i) { guint8 *p = amodule->blob + mono_aot_get_offset (got_info_offsets, got_offsets [i]); ji = &patches [i]; ji->type = (MonoJumpInfoType)decode_value (p, &p); /* See load_method () for SFLDA */ if (got && got [got_offsets [i]] && ji->type != MONO_PATCH_INFO_SFLDA) { /* Already loaded */ } else { res = decode_patch (amodule, mp, ji, p, &p); if (!res) return NULL; } } return patches; } static MonoJumpInfo* load_patch_info (MonoAotModule *amodule, MonoMemPool *mp, int n_patches, gboolean llvm, guint32 **got_slots, guint8 *buf, guint8 **endbuf) { MonoJumpInfo *patches; int pindex; guint8 *p; p = buf; *got_slots = (guint32 *)g_malloc (sizeof (guint32) * n_patches); for (pindex = 0; pindex < n_patches; ++pindex) { (*got_slots)[pindex] = decode_value (p, &p); } patches = decode_patches (amodule, mp, n_patches, llvm, *got_slots); if (!patches) { g_free (*got_slots); *got_slots = NULL; return NULL; } *endbuf = p; return patches; } static void register_jump_target_got_slot (MonoDomain *domain, MonoMethod *method, gpointer *got_slot) { /* * Jump addresses cannot be patched by the trampoline code since it * does not have access to the caller's address. Instead, we collect * the addresses of the GOT slots pointing to a method, and patch * them after the method has been compiled. */ MonoJitDomainInfo *info = domain_jit_info (domain); GSList *list; mono_domain_lock (domain); if (!info->jump_target_got_slot_hash) info->jump_target_got_slot_hash = g_hash_table_new (NULL, NULL); list = (GSList *)g_hash_table_lookup (info->jump_target_got_slot_hash, method); list = g_slist_prepend (list, got_slot); g_hash_table_insert (info->jump_target_got_slot_hash, method, list); mono_domain_unlock (domain); } /* * load_method: * * Load the method identified by METHOD_INDEX from the AOT image. Return a * pointer to the native code of the method, or NULL if not found. * METHOD might not be set if the caller only has the image/token info. */ static gpointer load_method (MonoDomain *domain, MonoAotModule *amodule, MonoImage *image, MonoMethod *method, guint32 token, int method_index, MonoError *error) { MonoJitInfo *jinfo = NULL; guint8 *code = NULL, *info; gboolean res; error_init (error); init_amodule_got (amodule); if (domain != mono_get_root_domain ()) /* Non shared AOT code can't be used in other appdomains */ return NULL; if (amodule->out_of_date) return NULL; if (amodule->info.llvm_get_method) { /* * Obtain the method address by calling a generated function in the LLVM module. */ gpointer (*get_method) (int) = (gpointer (*)(int))amodule->info.llvm_get_method; code = (guint8 *)get_method (method_index); } if (!code) { /* JITted method */ if (amodule->methods [method_index] == GINT_TO_POINTER (-1)) { if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) { char *full_name; if (!method) { method = mono_get_method_checked (image, token, NULL, NULL, error); if (!method) return NULL; } if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) { full_name = mono_method_full_name (method, TRUE); mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: NOT FOUND: %s.", full_name); g_free (full_name); } } return NULL; } code = (guint8 *)amodule->methods [method_index]; } info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)]; if (!amodule->methods_loaded) { amodule_lock (amodule); if (!amodule->methods_loaded) { guint32 *loaded; loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1); mono_memory_barrier (); amodule->methods_loaded = loaded; } amodule_unlock (amodule); } if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1) return code; if (mono_last_aot_method != -1) { gint32 methods_aot = InterlockedRead (&mono_jit_stats.methods_aot); if (methods_aot >= mono_last_aot_method) return NULL; else if (methods_aot == mono_last_aot_method - 1) { if (!method) { method = mono_get_method_checked (image, token, NULL, NULL, error); if (!method) return NULL; } if (method) { char *name = mono_method_full_name (method, TRUE); g_print ("LAST AOT METHOD: %s.\n", name); g_free (name); } else { g_print ("LAST AOT METHOD: %p %d\n", code, method_index); } } } if (!(is_llvm_code (amodule, code) && (amodule->info.flags & MONO_AOT_FILE_FLAG_LLVM_ONLY)) || (mono_llvm_only && method && method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)) { res = init_method (amodule, method_index, method, NULL, NULL, error); if (!res) goto cleanup; } if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) { char *full_name; if (!method) { method = mono_get_method_checked (image, token, NULL, NULL, error); if (!method) return NULL; } full_name = mono_method_full_name (method, TRUE); if (!jinfo) jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code); mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND method %s [%p - %p %p]", full_name, code, code + jinfo->code_size, info); g_free (full_name); } amodule_lock (amodule); init_plt (amodule); InterlockedIncrement (&mono_jit_stats.methods_aot); if (method && method->wrapper_type) g_hash_table_insert (amodule->method_to_code, method, code); /* Commit changes since methods_loaded is accessed outside the lock */ mono_memory_barrier (); amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32); amodule_unlock (amodule); if (MONO_PROFILER_ENABLED (jit_begin) || MONO_PROFILER_ENABLED (jit_done)) { MonoJitInfo *jinfo; if (!method) { method = mono_get_method_checked (amodule->assembly->image, token, NULL, NULL, error); if (!method) return NULL; } MONO_PROFILER_RAISE (jit_begin, (method)); jinfo = mono_jit_info_table_find (domain, (char*)code); g_assert (jinfo); MONO_PROFILER_RAISE (jit_done, (method, jinfo)); } return code; cleanup: if (jinfo) g_free (jinfo); return NULL; } static guint32 find_aot_method_in_amodule (MonoAotModule *amodule, MonoMethod *method, guint32 hash_full) { MonoError error; guint32 table_size, entry_size, hash; guint32 *table, *entry; guint32 index; static guint32 n_extra_decodes; if (!amodule || amodule->out_of_date) return 0xffffff; table_size = amodule->extra_method_table [0]; hash = hash_full % table_size; table = amodule->extra_method_table + 1; entry_size = 3; entry = &table [hash * entry_size]; if (entry [0] == 0) return 0xffffff; index = 0xffffff; while (TRUE) { guint32 key = entry [0]; guint32 value = entry [1]; guint32 next = entry [entry_size - 1]; MonoMethod *m; guint8 *p, *orig_p; p = amodule->blob + key; orig_p = p; amodule_lock (amodule); if (!amodule->method_ref_to_method) amodule->method_ref_to_method = g_hash_table_new (NULL, NULL); m = (MonoMethod *)g_hash_table_lookup (amodule->method_ref_to_method, p); amodule_unlock (amodule); if (!m) { m = decode_resolve_method_ref_with_target (amodule, method, p, &p, &error); mono_error_cleanup (&error); /* FIXME don't swallow the error */ /* * Can't catche runtime invoke wrappers since it would break * the check in decode_method_ref_with_target (). */ if (m && m->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) { amodule_lock (amodule); g_hash_table_insert (amodule->method_ref_to_method, orig_p, m); amodule_unlock (amodule); } } if (m == method) { index = value; break; } /* Methods decoded needlessly */ if (m) { //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p); n_extra_decodes ++; } if (next != 0) entry = &table [next * entry_size]; else break; } return index; } static void add_module_cb (gpointer key, gpointer value, gpointer user_data) { g_ptr_array_add ((GPtrArray*)user_data, value); } /* * find_aot_method: * * Try finding METHOD in the extra_method table in all AOT images. * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT * module where the method was found. */ static guint32 find_aot_method (MonoMethod *method, MonoAotModule **out_amodule) { guint32 index; GPtrArray *modules; int i; guint32 hash = mono_aot_method_hash (method); /* Try the method's module first */ *out_amodule = (MonoAotModule *)method->klass->image->aot_module; index = find_aot_method_in_amodule ((MonoAotModule *)method->klass->image->aot_module, method, hash); if (index != 0xffffff) return index; /* * Try all other modules. * This is needed because generic instances klass->image points to the image * containing the generic definition, but the native code is generated to the * AOT image which contains the reference. */ /* Make a copy to avoid doing the search inside the aot lock */ modules = g_ptr_array_new (); mono_aot_lock (); g_hash_table_foreach (aot_modules, add_module_cb, modules); mono_aot_unlock (); index = 0xffffff; for (i = 0; i < modules->len; ++i) { MonoAotModule *amodule = (MonoAotModule *)g_ptr_array_index (modules, i); if (amodule != method->klass->image->aot_module) index = find_aot_method_in_amodule (amodule, method, hash); if (index != 0xffffff) { *out_amodule = amodule; break; } } g_ptr_array_free (modules, TRUE); return index; } guint32 mono_aot_find_method_index (MonoMethod *method) { MonoAotModule *out_amodule; return find_aot_method (method, &out_amodule); } static gboolean init_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context, MonoError *error) { MonoDomain *domain = mono_domain_get (); MonoMemPool *mp; MonoClass *klass_to_run_ctor = NULL; gboolean from_plt = method == NULL; int pindex, n_patches; guint8 *p; MonoJitInfo *jinfo = NULL; guint8 *code, *info; error_init (error); code = (guint8 *)amodule->methods [method_index]; info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)]; p = info; //does the method's class has a cctor? if (decode_value (p, &p) == 1) klass_to_run_ctor = decode_klass_ref (amodule, p, &p, error); if (!is_ok (error)) return FALSE; //FIXME old code would use the class from @method if not null and ignore the one encoded. I don't know if we need to honor that -- @kumpera if (method) klass_to_run_ctor = method->klass; n_patches = decode_value (p, &p); if (n_patches) { MonoJumpInfo *patches; guint32 *got_slots; gboolean llvm; gpointer *got; mp = mono_mempool_new (); if ((gpointer)code >= amodule->info.jit_code_start && (gpointer)code <= amodule->info.jit_code_end) { llvm = FALSE; got = amodule->got; } else { llvm = TRUE; got = amodule->llvm_got; g_assert (got); } patches = load_patch_info (amodule, mp, n_patches, llvm, &got_slots, p, &p); if (patches == NULL) { mono_mempool_destroy (mp); goto cleanup; } for (pindex = 0; pindex < n_patches; ++pindex) { MonoJumpInfo *ji = &patches [pindex]; gpointer addr; /* * For SFLDA, we need to call resolve_patch_target () since the GOT slot could have * been initialized by load_method () for a static cctor before the cctor has * finished executing (#23242). */ if (!got [got_slots [pindex]] || ji->type == MONO_PATCH_INFO_SFLDA) { /* In llvm-only made, we might encounter shared methods */ if (mono_llvm_only && ji->type == MONO_PATCH_INFO_METHOD && mono_method_check_context_used (ji->data.method)) { g_assert (context); ji->data.method = mono_class_inflate_generic_method_checked (ji->data.method, context, error); if (!mono_error_ok (error)) { g_free (got_slots); mono_mempool_destroy (mp); return FALSE; } } /* This cannot be resolved in mono_resolve_patch_target () */ if (ji->type == MONO_PATCH_INFO_AOT_JIT_INFO) { // FIXME: Lookup using the index jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code); ji->type = MONO_PATCH_INFO_ABS; ji->data.target = jinfo; } addr = mono_resolve_patch_target (method, domain, code, ji, TRUE, error); if (!mono_error_ok (error)) { g_free (got_slots); mono_mempool_destroy (mp); return FALSE; } if (ji->type == MONO_PATCH_INFO_METHOD_JUMP) addr = mono_create_ftnptr (domain, addr); mono_memory_barrier (); got [got_slots [pindex]] = addr; if (ji->type == MONO_PATCH_INFO_METHOD_JUMP) register_jump_target_got_slot (domain, ji->data.method, &(got [got_slots [pindex]])); } ji->type = MONO_PATCH_INFO_NONE; } g_free (got_slots); mono_mempool_destroy (mp); } if (mini_get_debug_options ()->load_aot_jit_info_eagerly) jinfo = mono_aot_find_jit_info (domain, amodule->assembly->image, code); gboolean inited_ok = TRUE; if (init_class) inited_ok = mono_runtime_class_init_full (mono_class_vtable (domain, init_class), error); else if (from_plt && klass_to_run_ctor && !mono_class_is_gtd (klass_to_run_ctor)) inited_ok = mono_runtime_class_init_full (mono_class_vtable (domain, klass_to_run_ctor), error); if (!inited_ok) return FALSE; return TRUE; cleanup: if (jinfo) g_free (jinfo); return FALSE; } static void init_llvmonly_method (MonoAotModule *amodule, guint32 method_index, MonoMethod *method, MonoClass *init_class, MonoGenericContext *context) { gboolean res; MonoError error; res = init_method (amodule, method_index, method, init_class, context, &error); if (!is_ok (&error)) { MonoException *ex = mono_error_convert_to_exception (&error); /* Its okay to raise in llvmonly mode */ if (ex) mono_llvm_throw_exception ((MonoObject*)ex); } } void mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index) { MonoAotModule *amodule = (MonoAotModule *)aot_module; init_llvmonly_method (amodule, method_index, NULL, NULL, NULL); } void mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this_obj) { MonoAotModule *amodule = (MonoAotModule *)aot_module; MonoClass *klass; MonoGenericContext *context; MonoMethod *method; // FIXME: g_assert (this_obj); klass = this_obj->vtable->klass; amodule_lock (amodule); method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index)); amodule_unlock (amodule); g_assert (method); context = mono_method_get_context (method); g_assert (context); init_llvmonly_method (amodule, method_index, NULL, klass, context); } void mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx) { MonoAotModule *amodule = (MonoAotModule *)aot_module; MonoGenericContext context = { NULL, NULL }; MonoClass *klass = rgctx->class_vtable->klass; if (mono_class_is_ginst (klass)) context.class_inst = mono_class_get_generic_class (klass)->context.class_inst; else if (mono_class_is_gtd (klass)) context.class_inst = mono_class_get_generic_container (klass)->context.class_inst; context.method_inst = rgctx->method_inst; init_llvmonly_method (amodule, method_index, NULL, rgctx->class_vtable->klass, &context); } void mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable) { MonoAotModule *amodule = (MonoAotModule *)aot_module; MonoClass *klass; MonoGenericContext *context; MonoMethod *method; klass = vtable->klass; amodule_lock (amodule); method = (MonoMethod *)g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index)); amodule_unlock (amodule); g_assert (method); context = mono_method_get_context (method); g_assert (context); init_llvmonly_method (amodule, method_index, NULL, klass, context); } /* * mono_aot_get_method_checked: * * Return a pointer to the AOTed native code for METHOD if it can be found, * NULL otherwise. * On platforms with function pointers, this doesn't return a function pointer. */ gpointer mono_aot_get_method_checked (MonoDomain *domain, MonoMethod *method, MonoError *error) { MonoClass *klass = method->klass; MonoMethod *orig_method = method; guint32 method_index; MonoAotModule *amodule = (MonoAotModule *)klass->image->aot_module; guint8 *code; gboolean cache_result = FALSE; MonoError inner_error; error_init (error); if (domain != mono_get_root_domain ()) /* Non shared AOT code can't be used in other appdomains */ return NULL; if (enable_aot_cache && !amodule && domain->entry_assembly && klass->image == mono_defaults.corlib) { /* This cannot be AOTed during startup, so do it now */ if (!mscorlib_aot_loaded) { mscorlib_aot_loaded = TRUE; load_aot_module (klass->image->assembly, NULL); amodule = (MonoAotModule *)klass->image->aot_module; } } if (!amodule) return NULL; if (amodule->out_of_date) return NULL; if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) || (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) || (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) return NULL; /* * Use the original method instead of its invoke-with-check wrapper. * This is not a problem when using full-aot, since it doesn't support * remoting. */ if (mono_aot_only && method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) return mono_aot_get_method_checked (domain, mono_marshal_method_from_wrapper (method), error); g_assert (klass->inited); /* Find method index */ method_index = 0xffffff; if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, TRUE, FALSE, FALSE)) { MonoMethod *orig_method = method; /* * For generic methods, we store the fully shared instance in place of the * original method. */ method = mono_method_get_declaring_generic_method (method); method_index = mono_metadata_token_index (method->token) - 1; if (mono_llvm_only) { /* Needed by mono_aot_init_gshared_method_this () */ /* orig_method is a random instance but it is enough to make init_method () work */ amodule_lock (amodule); g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), orig_method); amodule_unlock (amodule); } } else if (method->is_inflated || !method->token) { /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */ amodule_lock (amodule); code = (guint8 *)g_hash_table_lookup (amodule->method_to_code, method); amodule_unlock (amodule); if (code) return code; cache_result = TRUE; method_index = find_aot_method (method, &amodule); /* * Special case the ICollection wrappers for arrays, as they cannot * be statically enumerated, and each wrapper ends up calling the same * method in Array. */ if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && method->klass->rank && strstr (method->name, "System.Collections.Generic")) { MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method); code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error); mono_error_cleanup (&inner_error); if (code) return code; } /* * Special case Array.GetGenericValueImpl which is a generic icall. * Generic sharing currently can't handle it, but the icall returns data using * an out parameter, so the managed-to-native wrappers can share the same code. */ if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass == mono_defaults.array_class && !strcmp (method->name, "GetGenericValueImpl")) { MonoMethod *m; MonoGenericContext ctx; MonoType *args [16]; if (mono_method_signature (method)->params [1]->type == MONO_TYPE_OBJECT) /* Avoid recursion */ return NULL; m = mono_class_get_method_from_name (mono_defaults.array_class, "GetGenericValueImpl", 2); g_assert (m); memset (&ctx, 0, sizeof (ctx)); args [0] = &mono_defaults.object_class->byval_arg; ctx.method_inst = mono_metadata_get_generic_inst (1, args); m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE); if (!m) g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */ /* * Get the code for the instantiation which should be emitted into * the mscorlib aot image by the AOT compiler. */ code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error); mono_error_cleanup (&inner_error); if (code) return code; } /* Same for CompareExchange and Exchange */ /* Same for Volatile.Read/Write */ if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE && method->klass->image == mono_defaults.corlib && ((!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Interlocked") && (!strcmp (method->name, "CompareExchange") || !strcmp (method->name, "Exchange")) && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1]))) || (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Read") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->ret)))) || (!strcmp (method->klass->name_space, "System.Threading") && !strcmp (method->klass->name, "Volatile") && (!strcmp (method->name, "Write") && MONO_TYPE_IS_REFERENCE (mini_type_get_underlying_type (mono_method_signature (method)->params [1])))))) { MonoMethod *m; MonoGenericContext ctx; MonoType *args [16]; gpointer iter = NULL; while ((m = mono_class_get_methods (method->klass, &iter))) { if (mono_method_signature (m)->generic_param_count && !strcmp (m->name, method->name)) break; } g_assert (m); memset (&ctx, 0, sizeof (ctx)); args [0] = &mono_defaults.object_class->byval_arg; ctx.method_inst = mono_metadata_get_generic_inst (1, args); m = mono_marshal_get_native_wrapper (mono_class_inflate_generic_method_checked (m, &ctx, error), TRUE, TRUE); if (!m) g_error ("AOT runtime could not load method due to %s", mono_error_get_message (error)); /* FIXME don't swallow the error */ /* Avoid recursion */ if (method == m) return NULL; /* * Get the code for the instantiation which should be emitted into * the mscorlib aot image by the AOT compiler. */ code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error); mono_error_cleanup (&inner_error); if (code) return code; } /* For ARRAY_ACCESSOR wrappers with reference types, use the instantiation saved in corlib */ if (method_index == 0xffffff && method->wrapper_type == MONO_WRAPPER_UNKNOWN) { WrapperInfo *info = mono_marshal_get_wrapper_info (method); if (info->subtype == WRAPPER_SUBTYPE_ARRAY_ACCESSOR) { MonoMethod *array_method = info->d.array_accessor.method; if (MONO_TYPE_IS_REFERENCE (&array_method->klass->element_class->byval_arg)) { int rank; if (!strcmp (array_method->name, "Set")) rank = mono_method_signature (array_method)->param_count - 1; else if (!strcmp (array_method->name, "Get") || !strcmp (array_method->name, "Address")) rank = mono_method_signature (array_method)->param_count; else g_assert_not_reached (); MonoClass *obj_array_class = mono_array_class_get (mono_defaults.object_class, rank); MonoMethod *m = mono_class_get_method_from_name (obj_array_class, array_method->name, mono_method_signature (array_method)->param_count); g_assert (m); m = mono_marshal_get_array_accessor_wrapper (m); if (m != method) { code = (guint8 *)mono_aot_get_method_checked (domain, m, &inner_error); mono_error_cleanup (&inner_error); if (code) return code; } } } } if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) { /* Partial sharing */ MonoMethod *shared; shared = mini_get_shared_method (method); method_index = find_aot_method (shared, &amodule); if (method_index != 0xffffff) method = shared; } if (method_index == 0xffffff && method->is_inflated && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) { MonoMethod *shared; /* gsharedvt */ /* Use the all-vt shared method since this is what was AOTed */ shared = mini_get_shared_method_full (method, TRUE, TRUE); method_index = find_aot_method (shared, &amodule); if (method_index != 0xffffff) method = mini_get_shared_method_full (method, TRUE, FALSE); } if (method_index == 0xffffff) { if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) { char *full_name; full_name = mono_method_full_name (method, TRUE); mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT NOT FOUND: %s.", full_name); g_free (full_name); } return NULL; } if (method_index == 0xffffff) return NULL; /* Needed by find_jit_info */ amodule_lock (amodule); g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method); amodule_unlock (amodule); } else { /* Common case */ method_index = mono_metadata_token_index (method->token) - 1; } code = (guint8 *)load_method (domain, amodule, klass->image, method, method->token, method_index, error); if (!is_ok (error)) return NULL; if (code && cache_result) { amodule_lock (amodule); g_hash_table_insert (amodule->method_to_code, orig_method, code); amodule_unlock (amodule); } return code; } /** * Same as mono_aot_get_method, but we try to avoid loading any metadata from the * method. */ gpointer mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error) { MonoAotModule *aot_module = (MonoAotModule *)image->aot_module; int method_index; gpointer res; error_init (error); if (!aot_module) return NULL; method_index = mono_metadata_token_index (token) - 1; res = load_method (domain, aot_module, image, NULL, token, method_index, error); return res; } typedef struct { guint8 *addr; gboolean res; } IsGotEntryUserData; static void check_is_got_entry (gpointer key, gpointer value, gpointer user_data) { IsGotEntryUserData *data = (IsGotEntryUserData*)user_data; MonoAotModule *aot_module = (MonoAotModule*)value; if (aot_module->got && (data->addr >= (guint8*)(aot_module->got)) && (data->addr < (guint8*)(aot_module->got + aot_module->info.got_size))) data->res = TRUE; } gboolean mono_aot_is_got_entry (guint8 *code, guint8 *addr) { IsGotEntryUserData user_data; if (!aot_modules) return FALSE; user_data.addr = addr; user_data.res = FALSE; mono_aot_lock (); g_hash_table_foreach (aot_modules, check_is_got_entry, &user_data); mono_aot_unlock (); return user_data.res; } typedef struct { guint8 *addr; MonoAotModule *module; } FindAotModuleUserData; static void find_aot_module_cb (gpointer key, gpointer value, gpointer user_data) { FindAotModuleUserData *data = (FindAotModuleUserData*)user_data; MonoAotModule *aot_module = (MonoAotModule*)value; if (amodule_contains_code_addr (aot_module, data->addr)) data->module = aot_module; } static inline MonoAotModule* find_aot_module (guint8 *code) { FindAotModuleUserData user_data; if (!aot_modules) return NULL; /* Reading these need no locking */ if (((gsize)code < aot_code_low_addr) || ((gsize)code > aot_code_high_addr)) return NULL; user_data.addr = code; user_data.module = NULL; mono_aot_lock (); g_hash_table_foreach (aot_modules, find_aot_module_cb, &user_data); mono_aot_unlock (); return user_data.module; } void mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr) { MonoAotModule *amodule; /* * Since AOT code is only used in the root domain, * mono_domain_get () != mono_get_root_domain () means the calling method * is AppDomain:InvokeInDomain, so this is the same check as in * mono_method_same_domain () but without loading the metadata for the method. */ if (mono_domain_get () == mono_get_root_domain ()) { if (!got) { amodule = find_aot_module (code); if (amodule) got = amodule->got; } mono_arch_patch_plt_entry (plt_entry, got, regs, addr); } } /* * mono_aot_plt_resolve: * * This function is called by the entries in the PLT to resolve the actual method that * needs to be called. It returns a trampoline to the method and patches the PLT entry. * Returns NULL if the something cannot be loaded. */ gpointer mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error) { #ifdef MONO_ARCH_AOT_SUPPORTED guint8 *p, *target, *plt_entry; MonoJumpInfo ji; MonoAotModule *module = (MonoAotModule*)aot_module; gboolean res, no_ftnptr = FALSE; MonoMemPool *mp; gboolean using_gsharedvt = FALSE; error_init (error); //printf ("DYN: %p %d\n", aot_module, plt_info_offset); p = &module->blob [plt_info_offset]; ji.type = (MonoJumpInfoType)decode_value (p, &p); mp = mono_mempool_new (); res = decode_patch (module, mp, &ji, p, &p); if (!res) { mono_mempool_destroy (mp); return NULL; } #ifdef MONO_ARCH_GSHAREDVT_SUPPORTED using_gsharedvt = TRUE; #endif /* * Avoid calling resolve_patch_target in the full-aot case if possible, since * it would create a trampoline, and we don't need that. * We could do this only if the method does not need the special handling * in mono_magic_trampoline (). */ if (mono_aot_only && ji.type == MONO_PATCH_INFO_METHOD && !ji.data.method->is_generic && !mono_method_check_context_used (ji.data.method) && !(ji.data.method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) && !mono_method_needs_static_rgctx_invoke (ji.data.method, FALSE) && !using_gsharedvt) { target = (guint8 *)mono_jit_compile_method (ji.data.method, error); if (!mono_error_ok (error)) { mono_mempool_destroy (mp); return NULL; } no_ftnptr = TRUE; } else { target = (guint8 *)mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE, error); if (!mono_error_ok (error)) { mono_mempool_destroy (mp); return NULL; } } /* * The trampoline expects us to return a function descriptor on platforms which use * it, but resolve_patch_target returns a direct function pointer for some type of * patches, so have to translate between the two. * FIXME: Clean this up, but how ? */ if (ji.type == MONO_PATCH_INFO_ABS || ji.type == MONO_PATCH_INFO_INTERNAL_METHOD || ji.type == MONO_PATCH_INFO_ICALL_ADDR || ji.type == MONO_PATCH_INFO_JIT_ICALL_ADDR || ji.type == MONO_PATCH_INFO_RGCTX_FETCH) { /* These should already have a function descriptor */ #ifdef PPC_USES_FUNCTION_DESCRIPTOR /* Our function descriptors have a 0 environment, gcc created ones don't */ if (ji.type != MONO_PATCH_INFO_INTERNAL_METHOD && ji.type != MONO_PATCH_INFO_JIT_ICALL_ADDR && ji.type != MONO_PATCH_INFO_ICALL_ADDR) g_assert (((gpointer*)target) [2] == 0); #endif /* Empty */ } else if (!no_ftnptr) { #ifdef PPC_USES_FUNCTION_DESCRIPTOR g_assert (((gpointer*)target) [2] != 0); #endif target = (guint8 *)mono_create_ftnptr (mono_domain_get (), target); } mono_mempool_destroy (mp); /* Patch the PLT entry with target which might be the actual method not a trampoline */ plt_entry = mono_aot_get_plt_entry (code); g_assert (plt_entry); mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target); return target; #else g_assert_not_reached (); return NULL; #endif } /** * init_plt: * * Initialize the PLT table of the AOT module. Called lazily when the first AOT * method in the module is loaded to avoid committing memory by writing to it. * LOCKING: Assumes the AMODULE lock is held. */ static void init_plt (MonoAotModule *amodule) { int i; gpointer tramp; if (amodule->plt_inited) return; if (amodule->info.plt_size <= 1) { amodule->plt_inited = TRUE; return; } tramp = mono_create_specific_trampoline (amodule, MONO_TRAMPOLINE_AOT_PLT, mono_get_root_domain (), NULL); /* * Initialize the PLT entries in the GOT to point to the default targets. */ tramp = mono_create_ftnptr (mono_domain_get (), tramp); for (i = 1; i < amodule->info.plt_size; ++i) /* All the default entries point to the AOT trampoline */ ((gpointer*)amodule->got)[amodule->info.plt_got_offset_base + i] = tramp; amodule->plt_inited = TRUE; } /* * mono_aot_get_plt_entry: * * Return the address of the PLT entry called by the code at CODE if exists. */ guint8* mono_aot_get_plt_entry (guint8 *code) { MonoAotModule *amodule = find_aot_module (code); guint8 *target = NULL; if (!amodule) return NULL; #ifdef TARGET_ARM if (is_thumb_code (amodule, code - 4)) return mono_arm_get_thumb_plt_entry (code); #endif #ifdef MONO_ARCH_AOT_SUPPORTED target = mono_arch_get_call_target (code); #else g_assert_not_reached (); #endif #ifdef MONOTOUCH while (target != NULL) { if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end))) return target; // Add 4 since mono_arch_get_call_target assumes we're passing // the instruction after the actual branch instruction. target = mono_arch_get_call_target (target + 4); } return NULL; #else if ((target >= (guint8*)(amodule->plt)) && (target < (guint8*)(amodule->plt_end))) return target; else return NULL; #endif } /* * mono_aot_get_plt_info_offset: * * Return the PLT info offset belonging to the plt entry called by CODE. */ guint32 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code) { guint8 *plt_entry = mono_aot_get_plt_entry (code); g_assert (plt_entry); /* The offset is embedded inside the code after the plt entry */ #ifdef MONO_ARCH_AOT_SUPPORTED return mono_arch_get_plt_info_offset (plt_entry, regs, code); #else g_assert_not_reached (); return 0; #endif } static gpointer mono_create_ftnptr_malloc (guint8 *code) { #ifdef PPC_USES_FUNCTION_DESCRIPTOR MonoPPCFunctionDescriptor *ftnptr = g_malloc0 (sizeof (MonoPPCFunctionDescriptor)); ftnptr->code = code; ftnptr->toc = NULL; ftnptr->env = NULL; return ftnptr; #else return code; #endif } /* * mono_aot_register_jit_icall: * * Register a JIT icall which is called by trampolines in full-aot mode. This should * be called from mono_arch_init () during startup. */ void mono_aot_register_jit_icall (const char *name, gpointer addr) { /* No need for locking */ if (!aot_jit_icall_hash) aot_jit_icall_hash = g_hash_table_new (g_str_hash, g_str_equal); g_hash_table_insert (aot_jit_icall_hash, (char*)name, addr); } /* * load_function_full: * * Load the function named NAME from the aot image. */ static gpointer load_function_full (MonoAotModule *amodule, const char *name, MonoTrampInfo **out_tinfo) { char *symbol; guint8 *p; int n_patches, pindex; MonoMemPool *mp; gpointer code; guint32 info_offset; /* Load the code */ symbol = g_strdup_printf ("%s", name); find_amodule_symbol (amodule, symbol, (gpointer *)&code); g_free (symbol); if (!code) g_error ("Symbol '%s' not found in AOT file '%s'.\n", name, amodule->aot_name); mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT, "AOT: FOUND function '%s' in AOT file '%s'.", name, amodule->aot_name); /* Load info */ symbol = g_strdup_printf ("%s_p", name); find_amodule_symbol (amodule, symbol, (gpointer *)&p); g_free (symbol); if (!p) /* Nothing to patch */ return code; info_offset = *(guint32*)p; if (out_tinfo) { MonoTrampInfo *tinfo; guint32 code_size, uw_info_len, uw_offset; guint8 *uw_info; /* Construct a MonoTrampInfo from the data in the AOT image */ p += sizeof (guint32); code_size = *(guint32*)p; p += sizeof (guint32); uw_offset = *(guint32*)p; uw_info = amodule->unwind_info + uw_offset; uw_info_len = decode_value (uw_info, &uw_info); tinfo = g_new0 (MonoTrampInfo, 1); tinfo->code = (guint8 *)code; tinfo->code_size = code_size; tinfo->uw_info_len = uw_info_len; if (uw_info_len) tinfo->uw_info = uw_info; *out_tinfo = tinfo; } p = amodule->blob + info_offset; /* Similar to mono_aot_load_method () */ n_patches = decode_value (p, &p); if (n_patches) { MonoJumpInfo *patches; guint32 *got_slots; mp = mono_mempool_new (); patches = load_patch_info (amodule, mp, n_patches, FALSE, &got_slots, p, &p); g_assert (patches); for (pindex = 0; pindex < n_patches; ++pindex) { MonoJumpInfo *ji = &patches [pindex]; MonoError error; gpointer target; if (amodule->got [got_slots [pindex]]) continue; /* * When this code is executed, the runtime may not be initalized yet, so * resolve the patch info by hand. */ if (ji->type == MONO_PATCH_INFO_JIT_ICALL_ADDR) { if (!strcmp (ji->data.name, "mono_get_lmf_addr")) { target = mono_get_lmf_addr; } else if (!strcmp (ji->data.name, "mono_thread_force_interruption_checkpoint_noraise")) { target = mono_thread_force_interruption_checkpoint_noraise; } else if (!strcmp (ji->data.name, "mono_interruption_checkpoint_from_trampoline")) { target = mono_interruption_checkpoint_from_trampoline; } else if (!strcmp (ji->data.name, "mono_exception_from_token")) { target = mono_exception_from_token; } else if (!strcmp (ji->data.name, "mono_throw_exception")) { target = mono_get_throw_exception (); } else if (strstr (ji->data.name, "trampoline_func_") == ji->data.name) { MonoTrampolineType tramp_type2 = (MonoTrampolineType)atoi (ji->data.name + strlen ("trampoline_func_")); target = (gpointer)mono_get_trampoline_func (tramp_type2); } else if (strstr (ji->data.name, "specific_trampoline_lazy_fetch_") == ji->data.name) { /* atoll is needed because the the offset is unsigned */ guint32 slot; int res; res = sscanf (ji->data.name, "specific_trampoline_lazy_fetch_%u", &slot); g_assert (res == 1); target = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL); target = mono_create_ftnptr_malloc ((guint8 *)target); } else if (!strcmp (ji->data.name, "debugger_agent_single_step_from_context")) { target = debugger_agent_single_step_from_context; } else if (!strcmp (ji->data.name, "debugger_agent_breakpoint_from_context")) { target = debugger_agent_breakpoint_from_context; } else if (!strcmp (ji->data.name, "throw_exception_addr")) { target = mono_get_throw_exception_addr (); } else if (strstr (ji->data.name, "generic_trampoline_")) { target = mono_aot_get_trampoline (ji->data.name); } else if (aot_jit_icall_hash && g_hash_table_lookup (aot_jit_icall_hash, ji->data.name)) { /* Registered by mono_arch_init () */ target = g_hash_table_lookup (aot_jit_icall_hash, ji->data.name); } else { fprintf (stderr, "Unknown relocation '%s'\n", ji->data.name); g_assert_not_reached (); target = NULL; } } else { /* Hopefully the code doesn't have patches which need method or * domain to be set. */ target = mono_resolve_patch_target (NULL, NULL, (guint8 *)code, ji, FALSE, &error); mono_error_assert_ok (&error); g_assert (target); } amodule->got [got_slots [pindex]] = target; } g_free (got_slots); mono_mempool_destroy (mp); } return code; } static gpointer load_function (MonoAotModule *amodule, const char *name) { return load_function_full (amodule, name, NULL); } static MonoAotModule* get_mscorlib_aot_module (void) { MonoImage *image; MonoAotModule *amodule; image = mono_defaults.corlib; if (image) amodule = (MonoAotModule *)image->aot_module; else amodule = mscorlib_aot_module; g_assert (amodule); return amodule; } static void no_trampolines (void) { g_assert_not_reached (); } #ifndef TARGET_WASM /* * Return the trampoline identified by NAME from the mscorlib AOT file. * On ppc64, this returns a function descriptor. */ gpointer mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo) { MonoAotModule *amodule = get_mscorlib_aot_module (); if (mono_llvm_only) { *out_tinfo = NULL; return no_trampolines; } return mono_create_ftnptr_malloc ((guint8 *)load_function_full (amodule, name, out_tinfo)); } #endif gpointer mono_aot_get_trampoline (const char *name) { MonoTrampInfo *out_tinfo; gpointer code; code = mono_aot_get_trampoline_full (name, &out_tinfo); mono_aot_tramp_info_register (out_tinfo, NULL); return code; } static gpointer read_unwind_info (MonoAotModule *amodule, MonoTrampInfo *info, const char *symbol_name) { gpointer symbol_addr; guint32 uw_offset, uw_info_len; guint8 *uw_info; find_amodule_symbol (amodule, symbol_name, &symbol_addr); if (!symbol_addr) return NULL; uw_offset = *(guint32*)symbol_addr; uw_info = amodule->unwind_info + uw_offset; uw_info_len = decode_value (uw_info, &uw_info); info->uw_info_len = uw_info_len; if (uw_info_len) info->uw_info = uw_info; else info->uw_info = NULL; /* If successful return the address of the following data */ return (guint32*)symbol_addr + 1; } #ifdef MONOTOUCH #include static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM]; static void read_page_trampoline_uwinfo (MonoTrampInfo *info, int tramp_type, gboolean is_generic) { char symbol_name [128]; if (tramp_type == MONO_AOT_TRAMP_SPECIFIC) sprintf (symbol_name, "specific_trampolines_page_%s_p", is_generic ? "gen" : "sp"); else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX) sprintf (symbol_name, "rgctx_trampolines_page_%s_p", is_generic ? "gen" : "sp"); else if (tramp_type == MONO_AOT_TRAMP_IMT) sprintf (symbol_name, "imt_trampolines_page_%s_p", is_generic ? "gen" : "sp"); else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG) sprintf (symbol_name, "gsharedvt_trampolines_page_%s_p", is_generic ? "gen" : "sp"); else g_assert_not_reached (); read_unwind_info (mono_defaults.corlib->aot_module, info, symbol_name); } static unsigned char* get_new_trampoline_from_page (int tramp_type) { MonoAotModule *amodule; MonoImage *image; TrampolinePage *page; int count; void *tpage; vm_address_t addr, taddr; kern_return_t ret; vm_prot_t prot, max_prot; int psize, specific_trampoline_size; unsigned char *code; specific_trampoline_size = 2 * sizeof (gpointer); mono_aot_page_lock (); page = trampoline_pages [tramp_type]; if (page && page->trampolines < page->trampolines_end) { code = page->trampolines; page->trampolines += specific_trampoline_size; mono_aot_page_unlock (); return code; } mono_aot_page_unlock (); /* the trampoline template page is in the mscorlib module */ image = mono_defaults.corlib; g_assert (image); psize = MONO_AOT_TRAMP_PAGE_SIZE; amodule = image->aot_module; g_assert (amodule); if (tramp_type == MONO_AOT_TRAMP_SPECIFIC) tpage = load_function (amodule, "specific_trampolines_page"); else if (tramp_type == MONO_AOT_TRAMP_STATIC_RGCTX) tpage = load_function (amodule, "rgctx_trampolines_page"); else if (tramp_type == MONO_AOT_TRAMP_IMT) tpage = load_function (amodule, "imt_trampolines_page"); else if (tramp_type == MONO_AOT_TRAMP_GSHAREDVT_ARG) tpage = load_function (amodule, "gsharedvt_arg_trampolines_page"); else g_error ("Incorrect tramp type for trampolines page"); g_assert (tpage); /*g_warning ("loaded trampolines page at %x", tpage);*/ /* avoid the unlikely case of looping forever */ count = 40; page = NULL; while (page == NULL && count-- > 0) { MonoTrampInfo *gen_info, *sp_info; addr = 0; /* allocate two contiguous pages of memory: the first page will contain the data (like a local constant pool) * while the second will contain the trampolines. */ do { ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE); } while (ret == KERN_ABORTED); if (ret != KERN_SUCCESS) { g_error ("Cannot allocate memory for trampolines: %d", ret); break; } /*g_warning ("allocated trampoline double page at %x", addr);*/ /* replace the second page with a remapped trampoline page */ taddr = addr + psize; vm_deallocate (mach_task_self (), taddr, psize); ret = vm_remap (mach_task_self (), &taddr, psize, 0, FALSE, mach_task_self(), (vm_address_t)tpage, FALSE, &prot, &max_prot, VM_INHERIT_SHARE); if (ret != KERN_SUCCESS) { /* someone else got the page, try again */ vm_deallocate (mach_task_self (), addr, psize); continue; } /*g_warning ("remapped trampoline page at %x", taddr);*/ mono_aot_page_lock (); page = trampoline_pages [tramp_type]; /* some other thread already allocated, so use that to avoid wasting memory */ if (page && page->trampolines < page->trampolines_end) { code = page->trampolines; page->trampolines += specific_trampoline_size; mono_aot_page_unlock (); vm_deallocate (mach_task_self (), addr, psize); vm_deallocate (mach_task_self (), taddr, psize); return code; } page = (TrampolinePage*)addr; page->next = trampoline_pages [tramp_type]; trampoline_pages [tramp_type] = page; page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]); page->trampolines_end = (void*)(taddr + psize - 64); code = page->trampolines; page->trampolines += specific_trampoline_size; mono_aot_page_unlock (); /* Register the generic part at the beggining of the trampoline page */ gen_info = mono_tramp_info_create (NULL, (guint8*)taddr, amodule->info.tramp_page_code_offsets [tramp_type], NULL, NULL); read_page_trampoline_uwinfo (gen_info, tramp_type, TRUE); mono_aot_tramp_info_register (gen_info, NULL); /* * FIXME * Registering each specific trampoline produces a lot of * MonoJitInfo structures. Jump trampolines are also registered * separately. */ if (tramp_type != MONO_AOT_TRAMP_SPECIFIC) { /* Register the rest of the page as a single trampoline */ sp_info = mono_tramp_info_create (NULL, code, page->trampolines_end - code, NULL, NULL); read_page_trampoline_uwinfo (sp_info, tramp_type, FALSE); mono_aot_tramp_info_register (sp_info, NULL); } return code; } g_error ("Cannot allocate more trampoline pages: %d", ret); return NULL; } #else static unsigned char* get_new_trampoline_from_page (int tramp_type) { g_error ("Page trampolines not supported."); return NULL; } #endif static gpointer get_new_specific_trampoline_from_page (gpointer tramp, gpointer arg) { void *code; gpointer *data; code = get_new_trampoline_from_page (MONO_AOT_TRAMP_SPECIFIC); data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE); data [0] = arg; data [1] = tramp; /*g_warning ("new trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/ return code; } static gpointer get_new_rgctx_trampoline_from_page (gpointer tramp, gpointer arg) { void *code; gpointer *data; code = get_new_trampoline_from_page (MONO_AOT_TRAMP_STATIC_RGCTX); data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE); data [0] = arg; data [1] = tramp; /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/ return code; } static gpointer get_new_imt_trampoline_from_page (gpointer arg) { void *code; gpointer *data; code = get_new_trampoline_from_page (MONO_AOT_TRAMP_IMT); data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE); data [0] = arg; /*g_warning ("new imt trampoline at %p for data %p, (stored at %p)", code, arg, data);*/ return code; } static gpointer get_new_gsharedvt_arg_trampoline_from_page (gpointer tramp, gpointer arg) { void *code; gpointer *data; code = get_new_trampoline_from_page (MONO_AOT_TRAMP_GSHAREDVT_ARG); data = (gpointer*)((char*)code - MONO_AOT_TRAMP_PAGE_SIZE); data [0] = arg; data [1] = tramp; /*g_warning ("new rgctx trampoline at %p for data %p, tramp %p (stored at %p)", code, arg, tramp, data);*/ return code; } /* Return a given kind of trampoline */ /* FIXME set unwind info for these trampolines */ static gpointer get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size) { MonoImage *image; MonoAotModule *amodule = get_mscorlib_aot_module (); int index, tramp_size; /* Currently, we keep all trampolines in the mscorlib AOT image */ image = mono_defaults.corlib; *out_amodule = amodule; mono_aot_lock (); #ifdef MONOTOUCH #define MONOTOUCH_TRAMPOLINES_ERROR ". See http://docs.xamarin.com/ios/troubleshooting for instructions on how to fix this condition." #else #define MONOTOUCH_TRAMPOLINES_ERROR "" #endif if (amodule->trampoline_index [tramp_type] == amodule->info.num_trampolines [tramp_type]) { g_error ("Ran out of trampolines of type %d in '%s' (limit %d)%s\n", tramp_type, image ? image->name : "mscorlib", amodule->info.num_trampolines [tramp_type], MONOTOUCH_TRAMPOLINES_ERROR); } index = amodule->trampoline_index [tramp_type] ++; mono_aot_unlock (); *got_offset = amodule->info.trampoline_got_offset_base [tramp_type] + (index * n_got_slots); tramp_size = amodule->info.trampoline_size [tramp_type]; if (out_tramp_size) *out_tramp_size = tramp_size; return amodule->trampolines [tramp_type] + (index * tramp_size); } static void no_specific_trampoline (void) { g_assert_not_reached (); } /* * Return a specific trampoline from the AOT file. */ gpointer mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len) { MonoAotModule *amodule; guint32 got_offset, tramp_size; guint8 *code, *tramp; static gpointer generic_trampolines [MONO_TRAMPOLINE_NUM]; static gboolean inited; static guint32 num_trampolines; if (mono_llvm_only) { *code_len = 1; return no_specific_trampoline; } if (!inited) { mono_aot_lock (); if (!inited) { mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT | MONO_COUNTER_INT, &num_trampolines); inited = TRUE; } mono_aot_unlock (); } num_trampolines ++; if (!generic_trampolines [tramp_type]) { char *symbol; symbol = mono_get_generic_trampoline_name (tramp_type); generic_trampolines [tramp_type] = mono_aot_get_trampoline (symbol); g_free (symbol); } tramp = (guint8 *)generic_trampolines [tramp_type]; g_assert (tramp); if (USE_PAGE_TRAMPOLINES) { code = (guint8 *)get_new_specific_trampoline_from_page (tramp, arg1); tramp_size = 8; } else { code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC, 2, &amodule, &got_offset, &tramp_size); amodule->got [got_offset] = tramp; amodule->got [got_offset + 1] = arg1; } if (code_len) *code_len = tramp_size; return code; } gpointer mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr) { MonoAotModule *amodule; guint8 *code; guint32 got_offset; if (USE_PAGE_TRAMPOLINES) { code = (guint8 *)get_new_rgctx_trampoline_from_page (addr, ctx); } else { code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX, 2, &amodule, &got_offset, NULL); amodule->got [got_offset] = ctx; amodule->got [got_offset + 1] = addr; } /* The caller expects an ftnptr */ return mono_create_ftnptr (mono_domain_get (), code); } gpointer mono_aot_get_unbox_trampoline (MonoMethod *method) { guint32 method_index = mono_metadata_token_index (method->token) - 1; MonoAotModule *amodule; gpointer code; guint32 *ut, *ut_end, *entry; int low, high, entry_index = 0; gpointer symbol_addr; MonoTrampInfo *tinfo; if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) { method_index = find_aot_method (method, &amodule); if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, FALSE)) { MonoMethod *shared = mini_get_shared_method_full (method, FALSE, FALSE); method_index = find_aot_method (shared, &amodule); } if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, TRUE, TRUE)) { MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE); method_index = find_aot_method (shared, &amodule); } g_assert (method_index != 0xffffff); } else { amodule = (MonoAotModule *)method->klass->image->aot_module; g_assert (amodule); } if (amodule->info.llvm_get_unbox_tramp) { gpointer (*get_tramp) (int) = (gpointer (*)(int))amodule->info.llvm_get_unbox_tramp; code = get_tramp (method_index); if (code) return code; } ut = amodule->unbox_trampolines; ut_end = amodule->unbox_trampolines_end; /* Do a binary search in the sorted table */ code = NULL; low = 0; high = (ut_end - ut); while (low < high) { entry_index = (low + high) / 2; entry = &ut [entry_index]; if (entry [0] < method_index) { low = entry_index + 1; } else if (entry [0] > method_index) { high = entry_index; } else { break; } } code = get_call_table_entry (amodule->unbox_trampoline_addresses, entry_index); g_assert (code); tinfo = mono_tramp_info_create (NULL, (guint8 *)code, 0, NULL, NULL); symbol_addr = read_unwind_info (amodule, tinfo, "unbox_trampoline_p"); if (!symbol_addr) { mono_tramp_info_free (tinfo); return FALSE; } tinfo->code_size = *(guint32*)symbol_addr; mono_aot_tramp_info_register (tinfo, NULL); /* The caller expects an ftnptr */ return mono_create_ftnptr (mono_domain_get (), code); } gpointer mono_aot_get_lazy_fetch_trampoline (guint32 slot) { char *symbol; gpointer code; MonoAotModule *amodule = (MonoAotModule *)mono_defaults.corlib->aot_module; guint32 index = MONO_RGCTX_SLOT_INDEX (slot); static int count = 0; count ++; if (index >= amodule->info.num_rgctx_fetch_trampolines) { static gpointer addr; gpointer *info; /* * Use the general version of the rgctx fetch trampoline. It receives a pair of in the rgctx arg reg. */ if (!addr) addr = load_function (amodule, "rgctx_fetch_trampoline_general"); info = (void **)mono_domain_alloc0 (mono_get_root_domain (), sizeof (gpointer) * 2); info [0] = GUINT_TO_POINTER (slot); info [1] = mono_create_specific_trampoline (GUINT_TO_POINTER (slot), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, mono_get_root_domain (), NULL); code = mono_aot_get_static_rgctx_trampoline (info, addr); return mono_create_ftnptr (mono_domain_get (), code); } symbol = mono_get_rgctx_fetch_trampoline_name (slot); code = load_function ((MonoAotModule *)mono_defaults.corlib->aot_module, symbol); g_free (symbol); /* The caller expects an ftnptr */ return mono_create_ftnptr (mono_domain_get (), code); } static void no_imt_trampoline (void) { g_assert_not_reached (); } gpointer mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp) { guint32 got_offset; gpointer code; gpointer *buf; int i, index, real_count; MonoAotModule *amodule; if (mono_llvm_only) return no_imt_trampoline; real_count = 0; for (i = 0; i < count; ++i) { MonoIMTCheckItem *item = imt_entries [i]; if (item->is_equals) real_count ++; } /* Save the entries into an array */ buf = (void **)mono_domain_alloc (domain, (real_count + 1) * 2 * sizeof (gpointer)); index = 0; for (i = 0; i < count; ++i) { MonoIMTCheckItem *item = imt_entries [i]; if (!item->is_equals) continue; g_assert (item->key); buf [(index * 2)] = item->key; if (item->has_target_code) { gpointer *p = (gpointer *)mono_domain_alloc (domain, sizeof (gpointer)); *p = item->value.target_code; buf [(index * 2) + 1] = p; } else { buf [(index * 2) + 1] = &(vtable->vtable [item->value.vtable_slot]); } index ++; } buf [(index * 2)] = NULL; buf [(index * 2) + 1] = fail_tramp; if (USE_PAGE_TRAMPOLINES) { code = get_new_imt_trampoline_from_page (buf); } else { code = get_numerous_trampoline (MONO_AOT_TRAMP_IMT, 1, &amodule, &got_offset, NULL); amodule->got [got_offset] = buf; } return code; } gpointer mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr) { MonoAotModule *amodule; guint8 *code; guint32 got_offset; if (USE_PAGE_TRAMPOLINES) { code = (guint8 *)get_new_gsharedvt_arg_trampoline_from_page (addr, arg); } else { code = (guint8 *)get_numerous_trampoline (MONO_AOT_TRAMP_GSHAREDVT_ARG, 2, &amodule, &got_offset, NULL); amodule->got [got_offset] = arg; amodule->got [got_offset + 1] = addr; } /* The caller expects an ftnptr */ return mono_create_ftnptr (mono_domain_get (), code); } /* * mono_aot_set_make_unreadable: * * Set whenever to make all mmaped memory unreadable. In conjuction with a * SIGSEGV handler, this is useful to find out which pages the runtime tries to read. */ void mono_aot_set_make_unreadable (gboolean unreadable) { static int inited; make_unreadable = unreadable; if (make_unreadable && !inited) { mono_counters_register ("AOT: pagefaults", MONO_COUNTER_JIT | MONO_COUNTER_INT, &n_pagefaults); } } typedef struct { MonoAotModule *module; guint8 *ptr; } FindMapUserData; static void find_map (gpointer key, gpointer value, gpointer user_data) { MonoAotModule *module = (MonoAotModule*)value; FindMapUserData *data = (FindMapUserData*)user_data; if (!data->module) if ((data->ptr >= module->mem_begin) && (data->ptr < module->mem_end)) data->module = module; } static MonoAotModule* find_module_for_addr (void *ptr) { FindMapUserData data; if (!make_unreadable) return NULL; data.module = NULL; data.ptr = (guint8*)ptr; mono_aot_lock (); g_hash_table_foreach (aot_modules, (GHFunc)find_map, &data); mono_aot_unlock (); return data.module; } /* * mono_aot_is_pagefault: * * Should be called from a SIGSEGV signal handler to find out whenever @ptr is * within memory allocated by this module. */ gboolean mono_aot_is_pagefault (void *ptr) { if (!make_unreadable) return FALSE; /* * Not signal safe, but SIGSEGV's are synchronous, and * this is only turned on by a MONO_DEBUG option. */ return find_module_for_addr (ptr) != NULL; } /* * mono_aot_handle_pagefault: * * Handle a pagefault caused by an unreadable page by making it readable again. */ void mono_aot_handle_pagefault (void *ptr) { #ifndef HOST_WIN32 guint8* start = (guint8*)ROUND_DOWN (((gssize)ptr), mono_pagesize ()); int res; mono_aot_lock (); res = mono_mprotect (start, mono_pagesize (), MONO_MMAP_READ|MONO_MMAP_WRITE|MONO_MMAP_EXEC); g_assert (res == 0); n_pagefaults ++; mono_aot_unlock (); #endif } #else /* AOT disabled */ void mono_aot_init (void) { } void mono_aot_cleanup (void) { } guint32 mono_aot_find_method_index (MonoMethod *method) { g_assert_not_reached (); return 0; } void mono_aot_init_llvm_method (gpointer aot_module, guint32 method_index) { } void mono_aot_init_gshared_method_this (gpointer aot_module, guint32 method_index, MonoObject *this) { } void mono_aot_init_gshared_method_mrgctx (gpointer aot_module, guint32 method_index, MonoMethodRuntimeGenericContext *rgctx) { } void mono_aot_init_gshared_method_vtable (gpointer aot_module, guint32 method_index, MonoVTable *vtable) { } gpointer mono_aot_get_method (MonoDomain *domain, MonoMethod *method) { return NULL; } gpointer mono_aot_get_method_checked (MonoDomain *domain, MonoMethod *method, MonoError *error) { error_init (error); return NULL; } gboolean mono_aot_is_got_entry (guint8 *code, guint8 *addr) { return FALSE; } gboolean mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res) { return FALSE; } gboolean mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass) { return FALSE; } MonoJitInfo * mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr) { return NULL; } gpointer mono_aot_get_method_from_token (MonoDomain *domain, MonoImage *image, guint32 token, MonoError *error) { error_init (error); return NULL; } guint8* mono_aot_get_plt_entry (guint8 *code) { return NULL; } gpointer mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code, MonoError *error) { return NULL; } void mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr) { } gpointer mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot, MonoError *error) { error_init (error); return NULL; } guint32 mono_aot_get_plt_info_offset (mgreg_t *regs, guint8 *code) { g_assert_not_reached (); return 0; } gpointer mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len) { g_assert_not_reached (); return NULL; } gpointer mono_aot_get_static_rgctx_trampoline (gpointer ctx, gpointer addr) { g_assert_not_reached (); return NULL; } gpointer mono_aot_get_trampoline_full (const char *name, MonoTrampInfo **out_tinfo) { g_assert_not_reached (); return NULL; } gpointer mono_aot_get_trampoline (const char *name) { g_assert_not_reached (); return NULL; } gpointer mono_aot_get_unbox_trampoline (MonoMethod *method) { g_assert_not_reached (); return NULL; } gpointer mono_aot_get_lazy_fetch_trampoline (guint32 slot) { g_assert_not_reached (); return NULL; } gpointer mono_aot_get_imt_trampoline (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp) { g_assert_not_reached (); return NULL; } gpointer mono_aot_get_gsharedvt_arg_trampoline (gpointer arg, gpointer addr) { g_assert_not_reached (); return NULL; } void mono_aot_set_make_unreadable (gboolean unreadable) { } gboolean mono_aot_is_pagefault (void *ptr) { return FALSE; } void mono_aot_handle_pagefault (void *ptr) { } guint8* mono_aot_get_unwind_info (MonoJitInfo *ji, guint32 *unwind_info_len) { g_assert_not_reached (); return NULL; } void mono_aot_register_jit_icall (const char *name, gpointer addr) { } #endif