/* * aot-runtime.c: 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. */ #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 "mono/utils/mono-compiler.h" #include #include "mini.h" #include "version.h" #ifndef DISABLE_AOT #ifdef TARGET_WIN32 #define SHARED_EXT ".dll" #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__) #define SHARED_EXT ".dylib" #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__) #define SHARED_EXT ".dylib" #else #define SHARED_EXT ".so" #endif #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; 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; guint8 *mem_begin; guint8 *mem_end; guint8 *code; guint8 *code_end; guint8 *plt; guint8 *plt_end; guint8 *blob; gint32 *code_offsets; gpointer *method_addresses; /* This contains pairs sorted by offset */ /* This is needed because LLVM emitted methods can be in any order */ gint32 *sorted_code_offsets; gint32 sorted_code_offsets_len; guint32 *method_info_offsets; guint32 *got_info_offsets; guint32 *ex_info_offsets; guint32 *class_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; guint8 *unwind_info; guint8 *thumb_end; /* Points to the mono EH data created by LLVM */ guint8 *mono_eh_frame; /* 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; } MonoAotModule; typedef struct { void *next; unsigned char *trampolines; unsigned char *trampolines_end; } TrampolinePage; static GHashTable *aot_modules; #define mono_aot_lock() EnterCriticalSection (&aot_mutex) #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex) static CRITICAL_SECTION 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 under $HOME/.mono/aot-cache. */ static gboolean use_aot_cache = FALSE; /* * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if * use_aot_cache is TRUE. */ static gboolean spawn_compiler = TRUE; /* 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() EnterCriticalSection (&aot_page_mutex) #define mono_aot_page_unlock() LeaveCriticalSection (&aot_page_mutex) static CRITICAL_SECTION aot_page_mutex; static void init_plt (MonoAotModule *info); /*****************************************************/ /* AOT RUNTIME */ /*****************************************************/ /* * load_image: * * Load one of the images referenced by AMODULE. Returns NULL if the image is not * found, and sets the loader error if SET_ERROR is TRUE. */ static MonoImage * load_image (MonoAotModule *amodule, int index, gboolean set_error) { MonoAssembly *assembly; MonoImageOpenStatus status; g_assert (index < amodule->image_table_len); if (amodule->image_table [index]) return amodule->image_table [index]; if (amodule->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.\n", amodule->aot_name, amodule->image_names [index].name); amodule->out_of_date = TRUE; if (set_error) { char *full_name = mono_stringify_assembly_name (&amodule->image_names [index]); mono_loader_set_error_assembly_load (full_name, FALSE); g_free (full_name); } 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').\n", amodule->aot_name, 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, noffsets, 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); static MonoClass* decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf); static MonoType* decode_type (MonoAotModule *module, guint8 *buf, guint8 **endbuf); static MonoGenericInst* decode_generic_inst (MonoAotModule *module, guint8 *buf, guint8 **endbuf) { int type_argc, i; MonoType **type_argv; MonoGenericInst *inst; guint8 *p = buf; 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); 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) { guint8 *p = buf; guint8 *p2; int argc; p2 = p; argc = decode_value (p, &p); if (argc) { p = p2; ctx->class_inst = decode_generic_inst (module, p, &p); 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); if (!ctx->method_inst) return FALSE; } *endbuf = p; return TRUE; } static MonoClass* decode_klass_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf) { MonoImage *image; MonoClass *klass = NULL, *eklass; guint32 token, rank, idx; guint8 *p = buf; int reftype; reftype = decode_value (p, &p); if (reftype == 0) { *endbuf = p; return NULL; } switch (reftype) { case MONO_AOT_TYPEREF_TYPEDEF_INDEX: idx = decode_value (p, &p); image = load_image (module, 0, TRUE); if (!image) return NULL; klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx); break; case MONO_AOT_TYPEREF_TYPEDEF_INDEX_IMAGE: idx = decode_value (p, &p); image = load_image (module, decode_value (p, &p), TRUE); if (!image) return NULL; klass = mono_class_get (image, MONO_TOKEN_TYPE_DEF + idx); break; case MONO_AOT_TYPEREF_TYPESPEC_TOKEN: token = decode_value (p, &p); image = module->assembly->image; if (!image) return NULL; klass = mono_class_get (image, token); break; case MONO_AOT_TYPEREF_GINST: { MonoClass *gclass; MonoGenericContext ctx; MonoType *type; gclass = decode_klass_ref (module, p, &p); if (!gclass) return NULL; g_assert (gclass->generic_container); memset (&ctx, 0, sizeof (ctx)); ctx.class_inst = decode_generic_inst (module, p, &p); if (!ctx.class_inst) return NULL; type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx); klass = mono_class_from_mono_type (type); mono_metadata_free_type (type); break; } case MONO_AOT_TYPEREF_VAR: { MonoType *t; MonoGenericContainer *container = NULL; int type = decode_value (p, &p); int num = decode_value (p, &p); gboolean has_container = decode_value (p, &p); int serial = 0; if (has_container) { 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); 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); if (!class_def) return NULL; container = class_def->generic_container; } } else { serial = decode_value (p, &p); } // FIXME: Memory management t = g_new0 (MonoType, 1); t->type = type; if (container) { t->data.generic_param = mono_generic_container_get_param (container, num); g_assert (serial == 0); } else { /* Anonymous */ MonoGenericParam *par = (MonoGenericParam*)g_new0 (MonoGenericParamFull, 1); par->num = num; par->serial = serial; // FIXME: par->image = mono_defaults.corlib; t->data.generic_param = par; } // 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); klass = mono_array_class_get (eklass, rank); break; case MONO_AOT_TYPEREF_PTR: { MonoType *t; t = decode_type (module, p, &p); 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); break; } default: g_assert_not_reached (); } 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) { MonoClass *klass = decode_klass_ref (module, buf, &buf); guint32 token; guint8 *p = buf; if (!klass) 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) { guint8 *p = buf; MonoType *t; t = g_malloc0 (sizeof (MonoType)); 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 = *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); break; case MONO_TYPE_SZARRAY: t->data.klass = decode_klass_ref (module, p, &p); if (!t->data.klass) return NULL; break; case MONO_TYPE_PTR: t->data.type = decode_type (module, p, &p); break; case MONO_TYPE_GENERICINST: { MonoClass *gclass; MonoGenericContext ctx; MonoType *type; MonoClass *klass; gclass = decode_klass_ref (module, p, &p); if (!gclass) return NULL; g_assert (gclass->generic_container); memset (&ctx, 0, sizeof (ctx)); ctx.class_inst = decode_generic_inst (module, p, &p); if (!ctx.class_inst) return NULL; type = mono_class_inflate_generic_type (&gclass->byval_arg, &ctx); klass = mono_class_from_mono_type (type); t->data.generic_class = klass->generic_class; 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); if (!array->eklass) return NULL; array->rank = decode_value (p, &p); array->numsizes = decode_value (p, &p); if (array->numsizes) array->sizes = 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 = 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); if (!klass) return NULL; t->data.generic_param = klass->byval_arg.data.generic_param; break; } default: g_assert_not_reached (); } *endbuf = p; return t; } // FIXME: Error handling, memory management static MonoMethodSignature* decode_signature_with_target (MonoAotModule *module, MonoMethodSignature *target, guint8 *buf, guint8 **endbuf) { MonoMethodSignature *sig; guint32 flags; int i, param_count, call_conv, gen_param_count = 0; 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 = 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->param_count = param_count; sig->ret = decode_type (module, p, &p); 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); } if (sig->call_convention == MONO_CALL_VARARG && sig->sentinelpos == -1) sig->sentinelpos = sig->param_count; *endbuf = p; return sig; } 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. */ static gboolean decode_method_ref_with_target (MonoAotModule *module, MethodRef *ref, MonoMethod *target, guint8 *buf, guint8 **endbuf) { guint32 image_index, value; MonoImage *image = NULL; guint8 *p = buf; memset (ref, 0, sizeof (MethodRef)); 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) { 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); if (!m) return FALSE; mono_class_init (m->klass); ref->method = mono_marshal_get_remoting_invoke_with_check (m); break; } case MONO_WRAPPER_PROXY_ISINST: { MonoClass *klass = decode_klass_ref (module, p, &p); 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: case MONO_WRAPPER_ISINST: { MonoClass *klass = decode_klass_ref (module, p, &p); 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 if (wrapper_type == MONO_WRAPPER_ISINST) ref->method = mono_marshal_get_isinst (klass); else g_assert_not_reached (); break; } case MONO_WRAPPER_LDFLD_REMOTE: ref->method = mono_marshal_get_ldfld_remote_wrapper (NULL); break; case MONO_WRAPPER_STFLD_REMOTE: ref->method = mono_marshal_get_stfld_remote_wrapper (NULL); break; #endif case MONO_WRAPPER_ALLOC: { int atype = decode_value (p, &p); ref->method = mono_gc_get_managed_allocator_by_type (atype); g_assert (ref->method); 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; WrapperInfo *info; 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 { g_assert_not_reached (); } break; } case MONO_WRAPPER_SYNCHRONIZED: { MonoMethod *m = decode_resolve_method_ref (module, p, &p); if (!m) return FALSE; ref->method = mono_marshal_get_synchronized_wrapper (m); break; } case MONO_WRAPPER_UNKNOWN: { MonoMethodDesc *desc; MonoMethod *orig_method; 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); 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); 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); 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_FAST_MONITOR_ENTER) desc = mono_method_desc_new ("Monitor:Enter", FALSE); else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_EXIT) desc = mono_method_desc_new ("Monitor:Exit", FALSE); else if (subtype == WRAPPER_SUBTYPE_FAST_MONITOR_ENTER_V4) desc = mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE); else g_assert_not_reached (); orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class); g_assert (orig_method); mono_method_desc_free (desc); ref->method = mono_monitor_get_fast_path (orig_method); } 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) { WrapperInfo *info; MonoMethod *m; m = decode_resolve_method_ref (module, p, &p); 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); 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 g_assert_not_reached (); 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); 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); if (!m) return FALSE; ref->method = mono_marshal_get_runtime_invoke (m, TRUE); } else { MonoMethodSignature *sig; WrapperInfo *info; 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); 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 && wrapper != target) return FALSE; 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) { WrapperInfo *info; subtype = 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); if (!m) return FALSE; klass = decode_klass_ref (module, p, &p); if (!klass) return FALSE; ref->method = mono_marshal_get_managed_wrapper (m, klass, 0); 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, TRUE); 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); 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, TRUE); if (!image) return FALSE; ref->method = mono_get_method_full (image, ref->token, NULL, NULL); if (!ref->method) return FALSE; memset (&ctx, 0, sizeof (ctx)); if (FALSE && klass->generic_class) { ctx.class_inst = klass->generic_class->context.class_inst; ctx.method_inst = NULL; ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx); } memset (&ctx, 0, sizeof (ctx)); if (!decode_generic_context (module, &ctx, p, &p)) return FALSE; ref->method = mono_class_inflate_generic_method_full (ref->method, klass, &ctx); } else if (image_index == MONO_AOT_METHODREF_ARRAY) { MonoClass *klass; int method_type; klass = decode_klass_ref (module, p, &p); 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: g_assert_not_reached (); } } 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, TRUE); if (!image) return FALSE; } *endbuf = p; ref->image = image; return TRUE; } static gboolean decode_method_ref (MonoAotModule *module, MethodRef *ref, guint8 *buf, guint8 **endbuf) { return decode_method_ref_with_target (module, ref, NULL, buf, endbuf); } /* * 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) { MethodRef ref; gboolean res; res = decode_method_ref_with_target (module, &ref, target, buf, endbuf); if (!res) return NULL; if (ref.method) return ref.method; if (!ref.image) return NULL; return mono_get_method (ref.image, ref.token, NULL); } static MonoMethod* decode_resolve_method_ref (MonoAotModule *module, guint8 *buf, guint8 **endbuf) { return decode_resolve_method_ref_with_target (module, NULL, buf, endbuf); } static void create_cache_structure (void) { const char *home; char *tmp; int err; home = g_get_home_dir (); if (!home) return; tmp = g_build_filename (home, ".mono", NULL); if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp); #ifdef HOST_WIN32 err = mkdir (tmp); #else err = mkdir (tmp, 0777); #endif if (err) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno)); g_free (tmp); return; } } g_free (tmp); tmp = g_build_filename (home, ".mono", "aot-cache", NULL); if (!g_file_test (tmp, G_FILE_TEST_IS_DIR)) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT creating directory %s", tmp); #ifdef HOST_WIN32 err = mkdir (tmp); #else err = mkdir (tmp, 0777); #endif if (err) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT failed: %s", g_strerror (errno)); g_free (tmp); return; } } g_free (tmp); } /* * load_aot_module_from_cache: * * Experimental code to AOT compile loaded assemblies on demand. * * FIXME: * - Add environment variable MONO_AOT_CACHE_OPTIONS * - Add options for controlling the cache size * - Handle full cache by deleting old assemblies lru style * - Add options for excluding assemblies during development * - Maybe add a threshold after an assembly is AOT compiled * - invoking a new mono process is a security risk * - recompile the AOT module if one of its dependencies changes */ static MonoDl* load_aot_module_from_cache (MonoAssembly *assembly, char **aot_name) { char *fname, *cmd, *tmp2, *aot_options; const char *home; MonoDl *module; gboolean res; gchar *out, *err; gint exit_status; *aot_name = NULL; if (assembly->image->dynamic) return NULL; create_cache_structure (); home = g_get_home_dir (); tmp2 = g_strdup_printf ("%s-%s%s", assembly->image->assembly_name, assembly->image->guid, SHARED_EXT); fname = g_build_filename (home, ".mono", "aot-cache", tmp2, NULL); *aot_name = fname; g_free (tmp2); mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT trying to load 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 not found."); mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT precompiling assembly '%s'... ", assembly->image->name); aot_options = g_strdup_printf ("outfile=%s", fname); if (spawn_compiler) { /* FIXME: security */ /* FIXME: Has to pass the assembly loading path to the child process */ cmd = g_strdup_printf ("mono -O=all --aot=%s %s", aot_options, assembly->image->name); res = g_spawn_command_line_sync (cmd, &out, &err, &exit_status, NULL); #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__) if (res) { if (!WIFEXITED (exit_status) && (WEXITSTATUS (exit_status) == 0)) mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT failed: %s.", err); else mono_trace (G_LOG_LEVEL_MESSAGE, MONO_TRACE_AOT, "AOT succeeded."); g_free (out); g_free (err); } #endif g_free (cmd); } else { res = mono_compile_assembly (assembly, mono_parse_default_optimizations (NULL), aot_options); if (!res) { 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); g_free (aot_options); } return module; } 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 = 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 gboolean check_usable (MonoAssembly *assembly, MonoAotFileInfo *info, char **out_msg) { char *build_info; char *msg = NULL; gboolean usable = TRUE; gboolean full_aot; guint8 *blob; 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 (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; } #ifdef TARGET_ARM /* mono_arch_find_imt_method () requires this */ if ((info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && !mono_use_llvm) { msg = g_strdup_printf ("compiled against LLVM"); usable = FALSE; } if (!(info->flags & MONO_AOT_FILE_FLAG_WITH_LLVM) && mono_use_llvm) { msg = g_strdup_printf ("not compiled against LLVM"); usable = FALSE; } #endif 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; } blob = info->blob; 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; } } *out_msg = msg; return usable; } /* This returns an interop address */ static void* get_arm_bl_target (guint32 *ins_addr) { #ifdef TARGET_ARM guint32 ins = *ins_addr; gint32 offset; 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; } #else g_assert_not_reached (); return NULL; #endif } static void load_aot_module (MonoAssembly *assembly, gpointer user_data) { char *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; guint8 *blob; gboolean do_load_image = TRUE; int align_double, align_int64; 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 (assembly->image->dynamic || assembly->ref_only) return; if (mono_security_cas_enabled ()) return; mono_aot_lock (); if (static_aot_modules) info = g_hash_table_lookup (static_aot_modules, assembly->aname.name); else info = NULL; mono_aot_unlock (); if (info) { /* Statically linked AOT module */ sofile = NULL; aot_name = g_strdup_printf ("%s", assembly->aname.name); mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "Found statically linked AOT module '%s'.\n", aot_name); globals = info->globals; } else { if (use_aot_cache) sofile = load_aot_module_from_cache (assembly, &aot_name); else { char *err; aot_name = g_strdup_printf ("%s%s", assembly->image->name, SHARED_EXT); sofile = mono_dl_open (aot_name, MONO_DL_LAZY, &err); if (!sofile) { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module '%s' not found: %s\n", aot_name, err); g_free (err); } } } if (!sofile && !globals) { if (mono_aot_only && assembly->image->tables [MONO_TABLE_METHOD].rows) { fprintf (stderr, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name); exit (1); } 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); } 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 { usable = check_usable (assembly, info, &msg); } if (!usable) { if (mono_aot_only) { fprintf (stderr, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name, msg); exit (1); } else { mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT module %s is unusable: %s.\n", aot_name, msg); } g_free (msg); g_free (aot_name); if (sofile) mono_dl_close (sofile); assembly->image->aot_module = NULL; return; } #if defined (TARGET_ARM) && defined (TARGET_MACH) { MonoType t; int align = 0; memset (&t, 0, sizeof (MonoType)); t.type = MONO_TYPE_R8; mono_type_size (&t, &align); align_double = align; memset (&t, 0, sizeof (MonoType)); t.type = MONO_TYPE_I8; align_int64 = align; } #else align_double = __alignof__ (double); align_int64 = __alignof__ (gint64); #endif /* Sanity check */ g_assert (info->double_align == align_double); g_assert (info->long_align == align_int64); g_assert (info->generic_tramp_num == MONO_TRAMPOLINE_NUM); blob = info->blob; amodule = g_new0 (MonoAotModule, 1); amodule->aot_name = aot_name; amodule->assembly = assembly; memcpy (&amodule->info, info, sizeof (*info)); amodule->got = amodule->info.got; amodule->got [0] = assembly->image; amodule->globals = globals; amodule->sofile = sofile; amodule->method_to_code = g_hash_table_new (mono_aligned_addr_hash, NULL); amodule->blob = blob; /* Read image table */ { guint32 table_len, i; char *table = NULL; table = 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 = 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->code_offsets = info->code_offsets; amodule->method_addresses = info->method_addresses; amodule->code = info->methods; #ifdef TARGET_ARM /* Mask out thumb interop bit */ amodule->code = (void*)((mgreg_t)amodule->code & ~1); #endif amodule->code_end = info->methods_end; amodule->method_info_offsets = info->method_info_offsets; amodule->ex_info_offsets = info->ex_info_offsets; amodule->class_info_offsets = info->class_info_offsets; amodule->class_name_table = info->class_name_table; amodule->extra_method_table = info->extra_method_table; amodule->extra_method_info_offsets = info->extra_method_info_offsets; amodule->unbox_trampolines = info->unbox_trampolines; amodule->unbox_trampolines_end = info->unbox_trampolines_end; amodule->got_info_offsets = info->got_info_offsets; amodule->unwind_info = info->unwind_info; amodule->mem_end = info->mem_end; amodule->mem_begin = amodule->code; amodule->plt = info->plt; amodule->plt_end = info->plt_end; amodule->mono_eh_frame = info->mono_eh_frame; amodule->trampolines [MONO_AOT_TRAMP_SPECIFIC] = info->specific_trampolines; amodule->trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = info->static_rgctx_trampolines; amodule->trampolines [MONO_AOT_TRAMP_IMT_THUNK] = info->imt_thunks; amodule->trampolines [MONO_AOT_TRAMP_GSHAREDVT_ARG] = info->gsharedvt_arg_trampolines; amodule->thumb_end = info->thumb_end; #ifdef MONOTOUCH if (info->flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) { /* Compute code_offsets from the method addresses */ amodule->code_offsets = g_malloc0 (amodule->info.nmethods * sizeof (gint32)); for (i = 0; i < amodule->info.nmethods; ++i) { /* method_addresses () contains a table of branches, since the ios linker can update those correctly */ void *addr = get_arm_bl_target ((guint32*)amodule->method_addresses + i); if (addr == amodule->method_addresses) amodule->code_offsets [i] = 0xffffffff; else amodule->code_offsets [i] = (char*)addr - (char*)amodule->code; } } #endif if (make_unreadable) { #ifndef TARGET_WIN32 guint8 *addr; guint8 *page_start, *page_end; int err, len; addr = amodule->mem_begin; 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 } mono_aot_lock (); aot_code_low_addr = MIN (aot_code_low_addr, (gsize)amodule->code); aot_code_high_addr = MAX (aot_code_high_addr, (gsize)amodule->code_end); g_hash_table_insert (aot_modules, assembly, amodule); mono_aot_unlock (); mono_jit_info_add_aot_module (assembly->image, amodule->code, amodule->code_end); assembly->image->aot_module = amodule; if (mono_aot_only) { char *code; find_symbol (amodule->sofile, amodule->globals, "specific_trampolines_page", (gpointer *)&code); amodule->use_page_trampolines = code != NULL; /*g_warning ("using page trampolines: %d", amodule->use_page_trampolines);*/ if (mono_defaults.corlib) { /* The second got slot contains the mscorlib got addr */ MonoAotModule *mscorlib_amodule = mono_defaults.corlib->aot_module; amodule->got [1] = mscorlib_amodule->got; } else { amodule->got [1] = amodule->got; } } if (mono_gc_is_moving ()) { MonoJumpInfo ji; memset (&ji, 0, sizeof (ji)); ji.type = MONO_PATCH_INFO_GC_CARD_TABLE_ADDR; amodule->got [2] = mono_resolve_patch_target (NULL, mono_get_root_domain (), NULL, &ji, FALSE); } /* * 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 defined(__native_client__) /* TODO: Don't 'load_image' on mscorlib due to a */ /* recursive loading problem. This should be */ /* removed if mscorlib is loaded from disk. */ if (strncmp(assembly->aname.name, "mscorlib", 8)) { do_load_image = TRUE; } else { do_load_image = FALSE; } #endif if (do_load_image) { for (i = 0; i < amodule->image_table_len; ++i) load_image (amodule, i, FALSE); } 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.\n", assembly->image->name); if (mono_aot_only) { fprintf (stderr, "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", aot_name); exit (1); } } else mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_AOT, "AOT loaded AOT Module for %s.\n", assembly->image->name); } /* * mono_aot_register_globals: * * This is called by the ctor function in AOT images compiled with the * 'no-dlsym' option. */ void mono_aot_register_globals (gpointer *globals) { g_assert_not_reached (); } /* * 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 = (gpointer)aot_info; g_assert (info->version == MONO_AOT_FILE_VERSION); globals = info->globals; g_assert (globals); aname = 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) { InitializeCriticalSection (&aot_mutex); InitializeCriticalSection (&aot_page_mutex); aot_modules = g_hash_table_new (NULL, NULL); #ifndef __native_client__ mono_install_assembly_load_hook (load_aot_module, NULL); #endif mono_counters_register ("Async JIT info size", MONO_COUNTER_INT|MONO_COUNTER_JIT, &async_jit_info_size); if (g_getenv ("MONO_LASTAOT")) mono_last_aot_method = atoi (g_getenv ("MONO_LASTAOT")); if (g_getenv ("MONO_AOT_CACHE")) use_aot_cache = TRUE; } 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) { 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); if (!res) return FALSE; info->cctor_token = ref.token; } if (info->has_finalize) { res = decode_method_ref (module, &ref, buf, &buf); 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) { int i; MonoClass *klass = vtable->klass; MonoAotModule *amodule = klass->image->aot_module; guint8 *info, *p; MonoCachedClassInfo class_info; gboolean err; MethodRef ref; gboolean res; 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); res = decode_method_ref (amodule, &ref, p, &p); 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; return mono_aot_get_method_from_token (domain, ref.image, ref.token); } gboolean mono_aot_get_cached_class_info (MonoClass *klass, MonoCachedClassInfo *res) { MonoAotModule *amodule = klass->image->aot_module; guint8 *p; gboolean err; if (klass->rank || !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 = 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; mono_aot_lock (); *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 = g_hash_table_lookup (amodule->name_cache, name_space); if (nspace_table) { *klass = g_hash_table_lookup (nspace_table, name); if (*klass) { mono_aot_unlock (); 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)) { mono_aot_unlock (); *klass = mono_class_get (image, token); /* Add to cache */ if (*klass) { mono_aot_lock (); nspace_table = 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); mono_aot_unlock (); } return TRUE; } if (next != 0) { entry = &table [next * 2]; } else { break; } } } mono_aot_unlock (); return TRUE; } /* * decode_mono_eh_frame: * * Decode the EH information emitted by our modified LLVM compiler and construct a * MonoJitInfo structure from it. * LOCKING: Acquires the domain lock. */ static MonoJitInfo* decode_llvm_mono_eh_frame (MonoAotModule *amodule, MonoDomain *domain, MonoMethod *method, guint8 *code, MonoJitExceptionInfo *clauses, int num_clauses, int extra_size, GSList **nesting, int *this_reg, int *this_offset) { guint8 *p; guint8 *fde, *cie, *code_start, *code_end; int version, fde_count; gint32 *table; int i, j, pos, left, right, offset, offset1, offset2, code_len, func_encoding; MonoJitExceptionInfo *ei; guint32 fde_len, ei_len, nested_len, nindex; gpointer *type_info; MonoJitInfo *jinfo; MonoLLVMFDEInfo info; 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 ++; func_encoding = *p; p ++; p = 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 */ offset = code - amodule->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); offset1 = amodule->code_offsets [table [(pos * 2)]]; if (pos + 1 == fde_count) { offset2 = amodule->code_end - amodule->code; } else { g_assert (table [(pos + 1) * 2] != -1); offset2 = amodule->code_offsets [table [(pos + 1) * 2]]; } if (offset < offset1) right = pos; else if (offset >= offset2) left = pos + 1; else break; } code_start = amodule->code + amodule->code_offsets [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 = amodule->code + amodule->code_offsets [table [(pos + 1) * 2]]; } code_len = code_end - code_start; g_assert (code >= code_start && code < code_end); if (amodule->thumb_end && (guint8*)code_start < amodule->thumb_end) /* 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]; mono_unwind_decode_llvm_mono_fde (fde, fde_len, cie, code_start, &info); ei = info.ex_info; ei_len = info.ex_info_len; type_info = info.type_info; *this_reg = info.this_reg; *this_offset = info.this_offset; /* 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) { gint32 nesting_cindex = GPOINTER_TO_INT (l->data); for (j = 0; j < ei_len; ++j) { gint32 cindex2 = read32 (type_info [j]); if (cindex2 == nesting_cindex) nested_len ++; } } } /* * LLVM might represent one IL region with multiple regions, so have to * allocate a new JI. */ jinfo = mono_domain_alloc0_lock_free (domain, MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * (ei_len + nested_len)) + extra_size); jinfo->code_size = code_len; jinfo->used_regs = mono_cache_unwind_info (info.unw_info, info.unw_info_len); jinfo->d.method = method; jinfo->code_start = code; jinfo->domain_neutral = 0; /* This signals that used_regs points to a normal cached unwind info */ jinfo->from_aot = 0; jinfo->num_clauses = ei_len + nested_len; for (i = 0; i < ei_len; ++i) { /* * orig_jinfo 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; /* Make sure we transition to thumb when a handler starts */ if (amodule->thumb_end && (guint8*)jei->handler_start < amodule->thumb_end) 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); for (j = 0; j < ei_len; ++j) { gint32 cindex2 = read32 (type_info [j]); if (cindex2 == nesting_cindex) { /* * The try interval comes from the nested clause, everything else from the * nesting clause. */ memcpy (&jinfo->clauses [nindex], &jinfo->clauses [j], sizeof (MonoJitExceptionInfo)); jinfo->clauses [nindex].try_start = jinfo->clauses [i].try_start; jinfo->clauses [nindex].try_end = jinfo->clauses [i].try_end; nindex ++; } } } } g_assert (nindex == ei_len + nested_len); return jinfo; } 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 *addr, guint8 *code, guint32 code_len) { int i, buf_len, num_clauses, len; MonoJitInfo *jinfo; guint used_int_regs, flags; 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 generic_info_size, try_holes_info_size, num_holes, arch_eh_jit_info_size; 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; flags = decode_value (p, &p); has_generic_jit_info = (flags & 1) != 0; has_dwarf_unwind_info = (flags & 2) != 0; has_clauses = (flags & 4) != 0; has_seq_points = (flags & 8) != 0; from_llvm = (flags & 16) != 0; has_try_block_holes = (flags & 32) != 0; has_gc_map = (flags & 64) != 0; has_arch_eh_jit_info = (flags & 128) != 0; if (has_dwarf_unwind_info) { guint32 offset; offset = decode_value (p, &p); g_assert (offset < (1 << 30)); used_int_regs = offset; } else { used_int_regs = decode_value (p, &p); } if (has_generic_jit_info) generic_info_size = sizeof (MonoGenericJitInfo); else generic_info_size = 0; if (has_try_block_holes) { num_holes = decode_value (p, &p); try_holes_info_size = sizeof (MonoTryBlockHoleTableJitInfo) + num_holes * sizeof (MonoTryBlockHoleJitInfo); } else { num_holes = try_holes_info_size = 0; } /* Exception table */ if (has_clauses) num_clauses = decode_value (p, &p); else num_clauses = 0; if (has_arch_eh_jit_info) arch_eh_jit_info_size = sizeof (MonoArchEHJitInfo); else arch_eh_jit_info_size = 0; if (from_llvm) { MonoJitExceptionInfo *clauses; GSList **nesting; // FIXME: async g_assert (!async); /* * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame * section. */ 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 (decode_value (p, &p)) ei->data.catch_class = decode_klass_ref (amodule, p, &p); /* Read the list of nesting clauses */ while (TRUE) { int nesting_index = decode_value (p, &p); if (nesting_index == -1) break; nesting [i] = g_slist_prepend (nesting [i], GINT_TO_POINTER (nesting_index)); } } jinfo = decode_llvm_mono_eh_frame (amodule, domain, method, code, clauses, num_clauses, generic_info_size + try_holes_info_size + arch_eh_jit_info_size, nesting, &this_reg, &this_offset); jinfo->from_llvm = 1; g_free (clauses); for (i = 0; i < num_clauses; ++i) g_slist_free (nesting [i]); g_free (nesting); } else { len = MONO_SIZEOF_JIT_INFO + (sizeof (MonoJitExceptionInfo) * num_clauses) + generic_info_size + try_holes_info_size + arch_eh_jit_info_size; jinfo = alloc0_jit_info_data (domain, len, async); jinfo->num_clauses = num_clauses; for (i = 0; i < jinfo->num_clauses; ++i) { MonoJitExceptionInfo *ei = &jinfo->clauses [i]; ei->flags = decode_value (p, &p); ei->exvar_offset = decode_value (p, &p); 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); } } 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->code_size = code_len; jinfo->used_regs = used_int_regs; jinfo->d.method = method; jinfo->code_start = code; jinfo->domain_neutral = 0; jinfo->from_aot = 1; } if (has_try_block_holes) { MonoTryBlockHoleTableJitInfo *table; jinfo->has_try_block_holes = 1; 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; jinfo->has_arch_eh_info = 1; eh_info = mono_jit_info_get_arch_eh_info (jinfo); eh_info->stack_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; jinfo->has_generic_jit_info = 1; gi = mono_jit_info_get_generic_jit_info (jinfo); g_assert (gi); gi->nlocs = decode_value (p, &p); if (gi->nlocs) { gi->locations = 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); } } 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); gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1); if (decode_value (p, &p)) { /* gsharedvt */ int i, n; MonoGenericSharingContext *gsctx = gi->generic_sharing_context; n = decode_value (p, &p); if (n) { gsctx->var_is_vt = alloc0_jit_info_data (domain, sizeof (gboolean) * n, async); for (i = 0; i < n; ++i) gsctx->var_is_vt [i] = decode_value (p, &p); } n = decode_value (p, &p); if (n) { gsctx->mvar_is_vt = alloc0_jit_info_data (domain, sizeof (gboolean) * n, async); for (i = 0; i < n; ++i) gsctx->mvar_is_vt [i] = decode_value (p, &p); } } } if (method && has_seq_points) { MonoSeqPointInfo *seq_points; int il_offset, native_offset, last_il_offset, last_native_offset, j; int len = decode_value (p, &p); seq_points = g_malloc0 (sizeof (MonoSeqPointInfo) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (SeqPoint)); seq_points->len = len; last_il_offset = last_native_offset = 0; for (i = 0; i < len; ++i) { SeqPoint *sp = &seq_points->seq_points [i]; il_offset = last_il_offset + decode_value (p, &p); native_offset = last_native_offset + decode_value (p, &p); sp->il_offset = il_offset; sp->native_offset = native_offset; sp->flags = decode_value (p, &p); sp->next_len = decode_value (p, &p); sp->next = g_new (int, sp->next_len); for (j = 0; j < sp->next_len; ++j) sp->next [j] = decode_value (p, &p); last_il_offset = il_offset; last_native_offset = native_offset; } mono_domain_lock (domain); g_hash_table_insert (domain_jit_info (domain)->seq_points, method, 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; } /* * 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 = ji->code_start; if (ji->async) amodule = ji->d.aot_info; else amodule = jinfo_get_method (ji)->klass->image->aot_module; g_assert (amodule); g_assert (ji->from_aot); if (!(code >= amodule->code && code <= amodule->code_end)) { /* ji belongs to a different aot module than amodule */ mono_aot_lock (); g_assert (ji_to_amodule); amodule = g_hash_table_lookup (ji_to_amodule, ji); g_assert (amodule); g_assert (code >= amodule->code && code <= amodule->code_end); mono_aot_unlock (); } p = amodule->unwind_info + ji->used_regs; *unwind_info_len = decode_value (p, &p); return p; } static G_GNUC_UNUSED int compare_ints (const void *a, const void *b) { return *(gint32*)a - *(gint32*)b; } static void msort_code_offsets_internal (gint32 *array, int lo, int hi, gint32 *scratch) { 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 * 2)] > array [(i * 2) + 2]) break; if (i == hi) /* Already sorted */ return; } msort_code_offsets_internal (array, lo, mid, scratch); msort_code_offsets_internal (array, mid + 1, hi, scratch); if (array [mid * 2] < array [(mid + 1) * 2]) 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 * 2] < array [t_hi * 2])) { scratch [(i * 2)] = array [t_lo * 2]; scratch [(i * 2) + 1] = array [(t_lo *2) + 1]; t_lo ++; } else { scratch [(i * 2)] = array [t_hi * 2]; scratch [(i * 2) + 1] = array [(t_hi *2) + 1]; t_hi ++; } } for (i = lo; i <= hi; ++i) { array [(i * 2)] = scratch [i * 2]; array [(i * 2) + 1] = scratch [(i * 2) + 1]; } } static void msort_code_offsets (gint32 *array, int len) { gint32 *scratch; scratch = g_new (gint32, len * 2); msort_code_offsets_internal (array, 0, len - 1, scratch); g_free (scratch); } /* * 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) { int pos, left, right, offset, offset1, offset2, code_len; int method_index, table_len; guint32 token; MonoAotModule *amodule = image->aot_module; MonoMethod *method = NULL; MonoJitInfo *jinfo; guint8 *code, *ex_info, *p; guint32 *table; int nmethods = amodule->info.nmethods; gint32 *code_offsets; int offsets_len, i; gboolean async; if (!amodule) return NULL; if (domain != mono_get_root_domain ()) /* FIXME: */ return NULL; async = mono_thread_info_is_async_context (); offset = (guint8*)addr - amodule->code; /* Compute a sorted table mapping code offsets to method indexes. */ if (!amodule->sorted_code_offsets) { // FIXME: async code_offsets = g_new0 (gint32, nmethods * 2); offsets_len = 0; for (i = 0; i < nmethods; ++i) { /* Skip the -1 entries to speed up sorting */ if (amodule->code_offsets [i] == 0xffffffff) continue; code_offsets [(offsets_len * 2)] = amodule->code_offsets [i]; code_offsets [(offsets_len *2) + 1] = i; offsets_len ++; } /* Use a merge sort as this is mostly sorted */ msort_code_offsets (code_offsets, offsets_len); //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints); for (i = 0; i < offsets_len -1; ++i) g_assert (code_offsets [(i * 2)] <= code_offsets [(i + 1) * 2]); amodule->sorted_code_offsets_len = offsets_len; mono_memory_barrier (); if (InterlockedCompareExchangePointer ((gpointer*)&amodule->sorted_code_offsets, code_offsets, NULL) != NULL) /* Somebody got in before us */ g_free (code_offsets); } code_offsets = amodule->sorted_code_offsets; offsets_len = amodule->sorted_code_offsets_len; if (offsets_len > 0 && (offset < code_offsets [0] || offset >= (amodule->code_end - amodule->code))) return NULL; /* Binary search in the sorted_code_offsets table */ left = 0; right = offsets_len; while (TRUE) { pos = (left + right) / 2; offset1 = code_offsets [(pos * 2)]; if (pos + 1 == offsets_len) offset2 = amodule->code_end - amodule->code; else offset2 = code_offsets [(pos + 1) * 2]; if (offset < offset1) right = pos; else if (offset >= offset2) left = pos + 1; else break; } g_assert (offset >= code_offsets [(pos * 2)]); if (pos + 1 < offsets_len) g_assert (offset < code_offsets [((pos + 1) * 2)]); method_index = code_offsets [(pos * 2) + 1]; /* 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 = &amodule->code [amodule->code_offsets [method_index]]; ex_info = &amodule->blob [mono_aot_get_offset (amodule->ex_info_offsets, method_index)]; if (pos == offsets_len - 1) code_len = amodule->code_end - code; else code_len = code_offsets [(pos + 1) * 2] - code_offsets [pos * 2]; g_assert ((guint8*)code <= (guint8*)addr && (guint8*)addr < (guint8*)code + code_len); /* Might be a wrapper/extra method */ if (!async) { if (amodule->extra_methods) { mono_aot_lock (); method = g_hash_table_lookup (amodule->extra_methods, GUINT_TO_POINTER (method_index)); mono_aot_unlock (); } 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); if (!method) /* Happens when a random address is passed in which matches a not-yey called wrapper encoded using its name */ return NULL; } else { token = mono_metadata_make_token (MONO_TABLE_METHOD, method_index + 1); method = mono_get_method (image, token, NULL); } } /* FIXME: */ g_assert (method); } //printf ("F: %s\n", mono_method_full_name (method, TRUE)); jinfo = decode_exception_debug_info (amodule, domain, method, ex_info, addr, code, code_len); g_assert ((guint8*)addr >= (guint8*)jinfo->code_start); g_assert ((guint8*)addr < (guint8*)jinfo->code_start + jinfo->code_size); /* 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 = 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 ((gpointer)&amodule->async_jit_info_table, new_table, old_table) == old_table) break; } } else { mono_jit_info_table_add (domain, jinfo); } return jinfo; } static gboolean decode_patch (MonoAotModule *aot_module, MonoMemPool *mp, MonoJumpInfo *ji, guint8 *buf, guint8 **endbuf) { 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_METHOD_RGCTX: case MONO_PATCH_INFO_METHOD_CODE_SLOT: { MethodRef ref; gboolean res; res = decode_method_ref (aot_module, &ref, p, &p); 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 ji->data.method = mono_get_method (ref.image, ref.token, NULL); 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: { 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); 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); if (!ji->data.klass) goto cleanup; break; case MONO_PATCH_INFO_CLASS_INIT: case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE: ji->data.klass = decode_klass_ref (aot_module, p, &p); if (!ji->data.klass) goto cleanup; break; case MONO_PATCH_INFO_IMAGE: ji->data.image = load_image (aot_module, decode_value (p, &p), TRUE); 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 = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoBBTable)); ji->data.table->table_size = decode_value (p, &p); table = 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), TRUE); 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), TRUE); 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); if (!res) goto cleanup; } break; case MONO_PATCH_INFO_EXC_NAME: ji->data.klass = decode_klass_ref (aot_module, p, &p); 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_GENERIC_CLASS_INIT: case MONO_PATCH_INFO_MONITOR_ENTER: case MONO_PATCH_INFO_MONITOR_EXIT: case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR: case MONO_PATCH_INFO_CASTCLASS_CACHE: case MONO_PATCH_INFO_JIT_TLS_ID: break; case MONO_PATCH_INFO_RGCTX_FETCH: { gboolean res; MonoJumpInfoRgctxEntry *entry; guint32 offset, val; guint8 *p2; offset = decode_value (p, &p); val = decode_value (p, &p); entry = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry)); p2 = aot_module->blob + offset; entry->method = decode_resolve_method_ref (aot_module, p2, &p2); entry->in_mrgctx = ((val & 1) > 0) ? TRUE : FALSE; entry->info_type = (val >> 1) & 0xff; entry->data = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo)); entry->data->type = (val >> 9) & 0xff; 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: break; case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE: { MonoJumpInfoImtTramp *imt_tramp = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoImtTramp)); imt_tramp->method = decode_resolve_method_ref (aot_module, p, &p); imt_tramp->vt_offset = decode_value (p, &p); ji->data.imt_tramp = imt_tramp; break; } case MONO_PATCH_INFO_SIGNATURE: ji->data.target = decode_signature (aot_module, p, &p); break; case MONO_PATCH_INFO_TLS_OFFSET: ji->data.target = GINT_TO_POINTER (decode_value (p, &p)); break; case MONO_PATCH_INFO_GSHAREDVT_CALL: { MonoJumpInfoGSharedVtCall *info = g_new0 (MonoJumpInfoGSharedVtCall, 1); info->sig = decode_signature (aot_module, p, &p); g_assert (info->sig); info->method = decode_resolve_method_ref (aot_module, p, &p); g_assert (info->method); ji->data.target = info; break; } case MONO_PATCH_INFO_GSHAREDVT_METHOD: { MonoGSharedVtMethodInfo *info = g_new0 (MonoGSharedVtMethodInfo, 1); int i, nentries; info->method = decode_resolve_method_ref (aot_module, p, &p); g_assert (info->method); nentries = decode_value (p, &p); info->entries = g_ptr_array_new (); for (i = 0; i < nentries; ++i) { MonoRuntimeGenericContextInfoTemplate *template = g_new0 (MonoRuntimeGenericContextInfoTemplate, 1); template->info_type = 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); 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; } g_ptr_array_add (info->entries, template); } ji->data.target = info; break; } default: g_warning ("unhandled type %d", ji->type); g_assert_not_reached (); } *endbuf = p; return TRUE; cleanup: return FALSE; } static MonoJumpInfo* load_patch_info (MonoAotModule *aot_module, MonoMemPool *mp, int n_patches, guint32 **got_slots, guint8 *buf, guint8 **endbuf) { MonoJumpInfo *patches; int pindex; guint8 *p; p = buf; patches = mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo) * n_patches); *got_slots = g_malloc (sizeof (guint32) * n_patches); for (pindex = 0; pindex < n_patches; ++pindex) { MonoJumpInfo *ji = &patches [pindex]; guint8 *shared_p; gboolean res; guint32 got_offset; got_offset = decode_value (p, &p); if (aot_module->got [got_offset]) { /* Already loaded */ //printf ("HIT!\n"); } else { shared_p = aot_module->blob + mono_aot_get_offset (aot_module->got_info_offsets, got_offset); ji->type = decode_value (shared_p, &shared_p); res = decode_patch (aot_module, mp, ji, shared_p, &shared_p); if (!res) goto cleanup; } (*got_slots) [pindex] = got_offset; } *endbuf = p; return patches; cleanup: g_free (*got_slots); *got_slots = NULL; return NULL; } 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 = 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) { MonoClass *klass; gboolean from_plt = method == NULL; MonoMemPool *mp; int i, pindex, n_patches, used_strings; gboolean keep_patches = TRUE; guint8 *p; MonoJitInfo *jinfo = NULL; guint8 *code, *info; if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE) return NULL; if ((domain != mono_get_root_domain ()) && (!(amodule->info.opts & MONO_OPT_SHARED))) /* Non shared AOT code can't be used in other appdomains */ return NULL; if (amodule->out_of_date) return NULL; if (amodule->code_offsets [method_index] == 0xffffffff) { if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) { char *full_name; if (!method) method = mono_get_method (image, token, NULL); 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 = &amodule->code [amodule->code_offsets [method_index]]; info = &amodule->blob [mono_aot_get_offset (amodule->method_info_offsets, method_index)]; if (amodule->thumb_end && code < amodule->thumb_end && ((amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) == 0)) { /* Convert this into a thumb address */ g_assert ((amodule->code_offsets [method_index] & 0x1) == 0); code = &amodule->code [amodule->code_offsets [method_index] + 1]; } mono_aot_lock (); if (!amodule->methods_loaded) amodule->methods_loaded = g_new0 (guint32, amodule->info.nmethods / 32 + 1); mono_aot_unlock (); if ((amodule->methods_loaded [method_index / 32] >> (method_index % 32)) & 0x1) return code; if (mono_last_aot_method != -1) { if (mono_jit_stats.methods_aot >= mono_last_aot_method) return NULL; else if (mono_jit_stats.methods_aot == mono_last_aot_method - 1) { if (!method) method = mono_get_method (image, token, NULL); if (method) { char *name = mono_method_full_name (method, TRUE); printf ("LAST AOT METHOD: %s.\n", name); g_free (name); } else { printf ("LAST AOT METHOD: %p %d\n", code, method_index); } } } p = info; if (method) { klass = method->klass; decode_klass_ref (amodule, p, &p); } else { klass = decode_klass_ref (amodule, p, &p); } if (amodule->info.opts & MONO_OPT_SHARED) used_strings = decode_value (p, &p); else used_strings = 0; for (i = 0; i < used_strings; i++) { guint token = decode_value (p, &p); mono_ldstr (mono_get_root_domain (), image, mono_metadata_token_index (token)); } if (amodule->info.opts & MONO_OPT_SHARED) keep_patches = FALSE; n_patches = decode_value (p, &p); keep_patches = FALSE; if (n_patches) { MonoJumpInfo *patches; guint32 *got_slots; if (keep_patches) mp = domain->mp; else mp = mono_mempool_new (); patches = load_patch_info (amodule, mp, n_patches, &got_slots, p, &p); if (patches == NULL) goto cleanup; for (pindex = 0; pindex < n_patches; ++pindex) { MonoJumpInfo *ji = &patches [pindex]; if (!amodule->got [got_slots [pindex]]) { amodule->got [got_slots [pindex]] = mono_resolve_patch_target (method, domain, code, ji, TRUE); if (ji->type == MONO_PATCH_INFO_METHOD_JUMP) amodule->got [got_slots [pindex]] = mono_create_ftnptr (domain, amodule->got [got_slots [pindex]]); if (ji->type == MONO_PATCH_INFO_METHOD_JUMP) register_jump_target_got_slot (domain, ji->data.method, &(amodule->got [got_slots [pindex]])); } ji->type = MONO_PATCH_INFO_NONE; } g_free (got_slots); if (!keep_patches) 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); if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG, MONO_TRACE_AOT)) { char *full_name; if (!method) method = mono_get_method (image, token, 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); } mono_aot_lock (); InterlockedIncrement (&mono_jit_stats.methods_aot); amodule->methods_loaded [method_index / 32] |= 1 << (method_index % 32); init_plt (amodule); if (method && method->wrapper_type) g_hash_table_insert (amodule->method_to_code, method, code); mono_aot_unlock (); if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION) { MonoJitInfo *jinfo; if (!method) { method = mono_get_method (image, token, NULL); g_assert (method); } mono_profiler_method_jit (method); jinfo = mono_jit_info_table_find (domain, (char*)code); g_assert (jinfo); mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK); } if (from_plt && klass && !klass->generic_container) mono_runtime_class_init (mono_class_vtable (domain, klass)); return code; cleanup: /* FIXME: The space in domain->mp is wasted */ if (amodule->info.opts & MONO_OPT_SHARED) /* No need to cache patches */ mono_mempool_destroy (mp); if (jinfo) g_free (jinfo); return NULL; } static guint32 find_extra_method_in_amodule (MonoAotModule *amodule, MonoMethod *method) { 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]; table = amodule->extra_method_table + 1; entry_size = 3; hash = mono_aot_method_hash (method) % table_size; 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; mono_aot_lock (); if (!amodule->method_ref_to_method) amodule->method_ref_to_method = g_hash_table_new (NULL, NULL); m = g_hash_table_lookup (amodule->method_ref_to_method, p); mono_aot_unlock (); if (!m) { m = decode_resolve_method_ref_with_target (amodule, method, p, &p); if (m) { mono_aot_lock (); g_hash_table_insert (amodule->method_ref_to_method, orig_p, m); mono_aot_unlock (); } } if (m == method) { index = value; break; } /* Special case: wrappers of shared generic methods */ if (m && method->wrapper_type && m->wrapper_type == m->wrapper_type && method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) { MonoMethod *w1 = mono_marshal_method_from_wrapper (method); MonoMethod *w2 = mono_marshal_method_from_wrapper (m); if (w1->is_inflated && ((MonoMethodInflated *)w1)->declaring == w2) { 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_extra_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_extra_method (MonoMethod *method, MonoAotModule **out_amodule) { guint32 index; GPtrArray *modules; int i; /* Try the method's module first */ *out_amodule = method->klass->image->aot_module; index = find_extra_method_in_amodule (method->klass->image->aot_module, method); 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 = g_ptr_array_index (modules, i); if (amodule != method->klass->image->aot_module) index = find_extra_method_in_amodule (amodule, method); if (index != 0xffffff) { *out_amodule = amodule; break; } } g_ptr_array_free (modules, TRUE); return index; } /* * mono_aot_get_method: * * 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 (MonoDomain *domain, MonoMethod *method) { MonoClass *klass = method->klass; guint32 method_index; MonoAotModule *amodule = klass->image->aot_module; guint8 *code; 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 (domain, mono_marshal_method_from_wrapper (method)); g_assert (klass->inited); /* Find method index */ method_index = 0xffffff; if (method->is_inflated && !method->wrapper_type && mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) { /* * 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; } 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 */ mono_aot_lock (); code = g_hash_table_lookup (amodule->method_to_code, method); mono_aot_unlock (); if (code) return code; method_index = find_extra_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 = mono_aot_get_method (domain, m); if (code) { if (mono_method_needs_static_rgctx_invoke (m, FALSE)) { code = mono_create_static_rgctx_trampoline (m, mono_create_ftnptr (domain, code)); /* The call above returns an ftnptr */ code = mono_get_addr_from_ftnptr (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 (m, &ctx), TRUE, TRUE); /* * Get the code for the instantiation which should be emitted into * the mscorlib aot image by the AOT compiler. */ code = mono_aot_get_method (domain, m); 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 (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 (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 (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 (m, &ctx), TRUE, TRUE); /* 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 = mono_aot_get_method (domain, m); 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_extra_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)) { /* gsharedvt */ /* Use the all-vt shared method since this is what was AOTed */ method_index = find_extra_method (mini_get_shared_method_full (method, TRUE, TRUE), &amodule); if (method_index != 0xffffff) method = mini_get_shared_method_full (method, TRUE, FALSE); } if (method_index == 0xffffff) { if (mono_aot_only && 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 */ mono_aot_lock (); if (!amodule->extra_methods) amodule->extra_methods = g_hash_table_new (NULL, NULL); g_hash_table_insert (amodule->extra_methods, GUINT_TO_POINTER (method_index), method); mono_aot_unlock (); } else { /* Common case */ method_index = mono_metadata_token_index (method->token) - 1; } return load_method (domain, amodule, klass->image, method, method->token, method_index); } /** * 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) { MonoAotModule *aot_module = image->aot_module; int method_index; if (!aot_module) return NULL; method_index = mono_metadata_token_index (token) - 1; return load_method (domain, aot_module, image, NULL, token, method_index); } 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 ((data->addr >= (guint8*)(aot_module->code)) && (data->addr < (guint8*)(aot_module->code_end))) 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, gpointer *got, mgreg_t *regs, guint8 *addr) { /* * 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 ()) mono_arch_patch_plt_entry (code, 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) { #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; //printf ("DYN: %p %d\n", aot_module, plt_info_offset); p = &module->blob [plt_info_offset]; ji.type = decode_value (p, &p); mp = mono_mempool_new_size (512); 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 = mono_jit_compile_method (ji.data.method); no_ftnptr = TRUE; } else { target = mono_resolve_patch_target (NULL, mono_domain_get (), NULL, &ji, TRUE); } /* * 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_CLASS_INIT || 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 = 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 (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 AOT lock is held. */ static void init_plt (MonoAotModule *amodule) { int i; gpointer tramp; if (amodule->plt_inited) 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 (amodule->thumb_end && code < amodule->thumb_end) { 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_symbol (amodule->sofile, amodule->globals, 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_symbol (amodule->sofile, amodule->globals, 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 = code; tinfo->code_size = code_size; tinfo->uw_info = uw_info; tinfo->uw_info_len = uw_info_len; *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, &got_slots, p, &p); g_assert (patches); for (pindex = 0; pindex < n_patches; ++pindex) { MonoJumpInfo *ji = &patches [pindex]; 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")) { target = mono_thread_force_interruption_checkpoint; } 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) { int tramp_type2 = 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 (target); } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_enter")) { target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL); target = mono_create_ftnptr_malloc (target); } else if (!strcmp (ji->data.name, "specific_trampoline_monitor_exit")) { target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL); target = mono_create_ftnptr_malloc (target); } else if (!strcmp (ji->data.name, "specific_trampoline_generic_class_init")) { target = mono_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), NULL); target = mono_create_ftnptr_malloc (target); } else if (!strcmp (ji->data.name, "mono_thread_get_and_clear_pending_exception")) { target = mono_thread_get_and_clear_pending_exception; } 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, code, ji, FALSE); 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); } /* * 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) { MonoImage *image; MonoAotModule *amodule; image = mono_defaults.corlib; g_assert (image); amodule = image->aot_module; g_assert (amodule); return mono_create_ftnptr_malloc (load_function_full (amodule, name, out_tinfo)); } gpointer mono_aot_get_trampoline (const char *name) { return mono_aot_get_trampoline_full (name, NULL); } #ifdef MONOTOUCH #include static TrampolinePage* trampoline_pages [MONO_AOT_TRAMP_NUM]; /* these sizes are for ARM code, parametrize if porting to other architectures (see arch_emit_specific_trampoline_pages) * trampoline size is assumed to be 8 bytes below as well (8 is the minimum for 32 bit archs, since we need to store * two pointers for trampoline in the data page). * the minimum for the common code must be at least sizeof(TrampolinePage), since we store the page info at the * beginning of the data page. */ static const int trampolines_pages_code_offsets [MONO_AOT_TRAMP_NUM] = {16, 16, 72, 16}; 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 (); psize = mono_pagesize (); /* the trampoline template page is in the mscorlib module */ image = mono_defaults.corlib; g_assert (image); amodule = image->aot_module; g_assert (amodule); g_assert (amodule->info.tramp_page_size == psize); 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_THUNK) 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) { 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. */ ret = vm_allocate (mach_task_self (), &addr, psize * 2, VM_FLAGS_ANYWHERE); 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 + trampolines_pages_code_offsets [tramp_type]); page->trampolines_end = (void*)(taddr + psize); code = page->trampolines; page->trampolines += 8; mono_aot_page_unlock (); 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_pagesize ()); 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_pagesize ()); 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_THUNK); data = (gpointer*)((char*)code - mono_pagesize ()); 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_pagesize ()); 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 */ static gpointer get_numerous_trampoline (MonoAotTrampoline tramp_type, int n_got_slots, MonoAotModule **out_amodule, guint32 *got_offset, guint32 *out_tramp_size) { MonoAotModule *amodule; int index, tramp_size; MonoImage *image; /* Currently, we keep all trampolines in the mscorlib AOT image */ image = mono_defaults.corlib; g_assert (image); mono_aot_lock (); amodule = image->aot_module; g_assert (amodule); *out_amodule = amodule; #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' (%d)%s\n", tramp_type, image->name, 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); } /* * 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 (!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 = generic_trampolines [tramp_type]; g_assert (tramp); if (USE_PAGE_TRAMPOLINES) { code = get_new_specific_trampoline_from_page (tramp, arg1); tramp_size = 8; } else { code = 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 = get_new_rgctx_trampoline_from_page (addr, ctx); } else { code = 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; if (method->is_inflated && !mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE)) { method_index = find_extra_method (method, &amodule); if (method_index == 0xffffff && mono_method_is_generic_sharable_full (method, FALSE, FALSE, TRUE)) { MonoMethod *shared = mini_get_shared_method_full (method, TRUE, TRUE); method_index = find_extra_method (shared, &amodule); } g_assert (method_index != 0xffffff); } else { amodule = method->klass->image->aot_module; g_assert (amodule); } 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) / 2; while (low < high) { entry_index = (low + high) / 2; entry = &ut [(entry_index * 2)]; if (entry [0] < method_index) { low = entry_index + 1; } else if (entry [0] > method_index) { high = entry_index; } else { if (amodule->info.flags & MONO_AOT_FILE_FLAG_DIRECT_METHOD_ADDRESSES) code = get_arm_bl_target (entry + 1); else code = amodule->code + entry [1]; break; } } g_assert (code); /* 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 = 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 = 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 (mono_defaults.corlib->aot_module, symbol); g_free (symbol); /* The caller expects an ftnptr */ return mono_create_ftnptr (mono_domain_get (), code); } gpointer mono_aot_get_imt_thunk (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; 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 = 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 = 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_THUNK, 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 = get_new_gsharedvt_arg_trampoline_from_page (addr, arg); } else { code = 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 PLATFORM_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) { } gpointer mono_aot_get_method (MonoDomain *domain, MonoMethod *method) { 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) { 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) { return NULL; } void mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr) { } gpointer mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot) { 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 (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_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count, gpointer fail_tramp) { g_assert_not_reached (); return NULL; } 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