mono/mini/debugger-agent.c

   1 /*
   2  * debugger-agent.c: Debugger back-end module
   3  *
   4  * Author:
   5  *   Zoltan Varga (vargaz@gmail.com)
   6  *
   7  * (C) 2009 Novell, Inc.
   8  */
   9
  10 #include <config.h>
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #ifdef HAVE_SYS_TYPES_H
  15 #include <sys/types.h>
  16 #endif
  17 #ifdef HAVE_SYS_SOCKET_H
  18 #include <sys/socket.h>
  19 #endif
  20 #ifdef HAVE_NETINET_TCP_H
  21 #include <netinet/tcp.h>
  22 #endif
  23 #ifdef HAVE_NETINET_IN_H
  24 #include <netinet/in.h>
  25 #endif
  26 #ifdef HAVE_NETDB_H
  27 #include <netdb.h>
  28 #endif
  29 #ifdef HAVE_UNISTD_H
  30 #include <unistd.h>
  31 #endif
  32 #include <errno.h>
  33 #include <glib.h>
  34
  35 #ifdef HAVE_PTHREAD_H
  36 #include <pthread.h>
  37 #endif
  38
  39 #ifdef HAVE_UCONTEXT_H
  40 #include <ucontext.h>
  41 #endif
  42
  43 #ifdef PLATFORM_ANDROID
  44 #include <linux/in.h>
  45 #include <linux/tcp.h>
  46 #include <sys/endian.h>
  47 #endif
  48
  49 #include <mono/metadata/mono-debug.h>
  50 #include <mono/metadata/mono-debug-debugger.h>
  51 #include <mono/metadata/debug-mono-symfile.h>
  52 #include <mono/metadata/gc-internal.h>
  53 #include <mono/metadata/threads-types.h>
  54 #include <mono/utils/mono-semaphore.h>
  55 #include "debugger-agent.h"
  56 #include "mini.h"
  57
  58 #ifndef MONO_ARCH_SOFT_DEBUG_SUPPORTED
  59 #define DISABLE_DEBUGGER_AGENT 1
  60 #endif
  61
  62 #ifndef DISABLE_DEBUGGER_AGENT
  63 #include <mono/io-layer/mono-mutex.h>
  64
  65 /* Definitions to make backporting to 2.6 easier */
  66 #define MonoInternalThread MonoThread
  67 #define mono_thread_internal_current mono_thread_current
  68 #define THREAD_TO_INTERNAL(thread) (thread)
  69
  70 typedef struct {
  71         gboolean enabled;
  72         char *transport;
  73         char *address;
  74         int log_level;
  75         char *log_file;
  76         gboolean suspend;
  77         gboolean server;
  78         gboolean onuncaught;
  79         GSList *onthrow;
  80         int timeout;
  81         char *launch;
  82 } AgentConfig;
  83
  84 typedef struct
  85 {
  86         int id;
  87         guint32 il_offset;
  88         MonoDomain *domain;
  89         MonoMethod *method;
  90         MonoContext ctx;
  91         MonoDebugMethodJitInfo *jit;
  92         int flags;
  93 } StackFrame;
  94
  95 typedef struct
  96 {
  97         int id;
  98         guint8 *p;
  99         guint8 *endp;
 100         /* This is the context which needs to be restored after the invoke */
 101         MonoContext ctx;
 102         gboolean has_ctx;
 103 } InvokeData;
 104
 105 typedef struct {
 106         MonoContext ctx;
 107         MonoLMF *lmf;
 108         MonoDomain *domain;
 109         gboolean has_context;
 110         gpointer resume_event;
 111         /* This is computed on demand when it is requested using the wire protocol */
 112         /* It is freed up when the thread is resumed */
 113         int frame_count;
 114         StackFrame **frames;
 115         /*
 116          * Whenever the frame info is up-to-date. If not, compute_frame_info () will need to
 117          * re-compute it.
 118          */
 119         gboolean frames_up_to_date;
 120         /*
 121          * Points to data about a pending invoke which needs to be executed after the thread
 122          * resumes.
 123          */
 124         InvokeData *invoke;
 125         /*
 126          * Set to TRUE if this thread is suspended in suspend_current () or it is executing
 127          * native code.
 128          */
 129         gboolean suspended;
 130         /* Used to pass the context to the breakpoint/single step handler */
 131         MonoContext handler_ctx;
 132         /* Whenever thread_stop () was called for this thread */
 133         gboolean terminated;
 134
 135         /* Number of thread interruptions not yet processed */
 136         gint32 interrupt_count;
 137 } DebuggerTlsData;
 138
 139 /*
 140  * Wire Protocol definitions
 141  */
 142
 143 #define HEADER_LENGTH 11
 144
 145 #define MAJOR_VERSION 0
 146 #define MINOR_VERSION 2
 147
 148 typedef enum {
 149         CMD_SET_VM = 1,
 150         CMD_SET_OBJECT_REF = 9,
 151         CMD_SET_STRING_REF = 10,
 152         CMD_SET_THREAD = 11,
 153         CMD_SET_ARRAY_REF = 13,
 154         CMD_SET_EVENT_REQUEST = 15,
 155         CMD_SET_STACK_FRAME = 16,
 156         CMD_SET_APPDOMAIN = 20,
 157         CMD_SET_ASSEMBLY = 21,
 158         CMD_SET_METHOD = 22,
 159         CMD_SET_TYPE = 23,
 160         CMD_SET_MODULE = 24,
 161         CMD_SET_EVENT = 64
 162 } CommandSet;
 163
 164 typedef enum {
 165         EVENT_KIND_VM_START = 0,
 166         EVENT_KIND_VM_DEATH = 1,
 167         EVENT_KIND_THREAD_START = 2,
 168         EVENT_KIND_THREAD_DEATH = 3,
 169         EVENT_KIND_APPDOMAIN_CREATE = 4,
 170         EVENT_KIND_APPDOMAIN_UNLOAD = 5,
 171         EVENT_KIND_METHOD_ENTRY = 6,
 172         EVENT_KIND_METHOD_EXIT = 7,
 173         EVENT_KIND_ASSEMBLY_LOAD = 8,
 174         EVENT_KIND_ASSEMBLY_UNLOAD = 9,
 175         EVENT_KIND_BREAKPOINT = 10,
 176         EVENT_KIND_STEP = 11,
 177         EVENT_KIND_TYPE_LOAD = 12,
 178         EVENT_KIND_EXCEPTION = 13
 179 } EventKind;
 180
 181 typedef enum {
 182         SUSPEND_POLICY_NONE = 0,
 183         SUSPEND_POLICY_EVENT_THREAD = 1,
 184         SUSPEND_POLICY_ALL = 2
 185 } SuspendPolicy;
 186
 187 typedef enum {
 188         ERR_NONE = 0,
 189         ERR_INVALID_OBJECT = 20,
 190         ERR_INVALID_FIELDID = 25,
 191         ERR_INVALID_FRAMEID = 30,
 192         ERR_NOT_IMPLEMENTED = 100,
 193         ERR_NOT_SUSPENDED = 101,
 194         ERR_INVALID_ARGUMENT = 102,
 195         ERR_UNLOADED = 103
 196 } ErrorCode;
 197
 198 typedef enum {
 199         MOD_KIND_COUNT = 1,
 200         MOD_KIND_THREAD_ONLY = 3,
 201         MOD_KIND_LOCATION_ONLY = 7,
 202         MOD_KIND_EXCEPTION_ONLY = 8,
 203         MOD_KIND_STEP = 10,
 204         MOD_KIND_ASSEMBLY_ONLY = 11
 205 } ModifierKind;
 206
 207 typedef enum {
 208         STEP_DEPTH_INTO = 0,
 209         STEP_DEPTH_OVER = 1,
 210         STEP_DEPTH_OUT = 2
 211 } StepDepth;
 212
 213 typedef enum {
 214         STEP_SIZE_MIN = 0,
 215         STEP_SIZE_LINE = 1
 216 } StepSize;
 217
 218 typedef enum {
 219         TOKEN_TYPE_STRING = 0,
 220         TOKEN_TYPE_TYPE = 1,
 221         TOKEN_TYPE_FIELD = 2,
 222         TOKEN_TYPE_METHOD = 3,
 223         TOKEN_TYPE_UNKNOWN = 4
 224 } DebuggerTokenType;
 225
 226 typedef enum {
 227         VALUE_TYPE_ID_NULL = 0xf0,
 228         VALUE_TYPE_ID_TYPE = 0xf1
 229 } ValueTypeId;
 230
 231 typedef enum {
 232         FRAME_FLAG_DEBUGGER_INVOKE = 1
 233 } StackFrameFlags;
 234
 235 typedef enum {
 236         CMD_VM_VERSION = 1,
 237         CMD_VM_ALL_THREADS = 2,
 238         CMD_VM_SUSPEND = 3,
 239         CMD_VM_RESUME = 4,
 240         CMD_VM_EXIT = 5,
 241         CMD_VM_DISPOSE = 6,
 242         CMD_VM_INVOKE_METHOD = 7
 243 } CmdVM;
 244
 245 typedef enum {
 246         CMD_THREAD_GET_FRAME_INFO = 1,
 247         CMD_THREAD_GET_NAME = 2,
 248         CMD_THREAD_GET_STATE = 3,
 249         CMD_THREAD_GET_INFO = 4
 250 } CmdThread;
 251
 252 typedef enum {
 253         CMD_EVENT_REQUEST_SET = 1,
 254         CMD_EVENT_REQUEST_CLEAR = 2,
 255         CMD_EVENT_REQUEST_CLEAR_ALL_BREAKPOINTS = 3
 256 } CmdEvent;
 257
 258 typedef enum {
 259         CMD_COMPOSITE = 100
 260 } CmdComposite;
 261
 262 typedef enum {
 263         CMD_APPDOMAIN_GET_ROOT_DOMAIN = 1,
 264         CMD_APPDOMAIN_GET_FRIENDLY_NAME = 2,
 265         CMD_APPDOMAIN_GET_ASSEMBLIES = 3,
 266         CMD_APPDOMAIN_GET_ENTRY_ASSEMBLY = 4,
 267         CMD_APPDOMAIN_CREATE_STRING = 5,
 268         CMD_APPDOMAIN_GET_CORLIB = 6
 269 } CmdAppDomain;
 270
 271 typedef enum {
 272         CMD_ASSEMBLY_GET_LOCATION = 1,
 273         CMD_ASSEMBLY_GET_ENTRY_POINT = 2,
 274         CMD_ASSEMBLY_GET_MANIFEST_MODULE = 3,
 275         CMD_ASSEMBLY_GET_OBJECT = 4,
 276         CMD_ASSEMBLY_GET_TYPE = 5,
 277 } CmdAssembly;
 278
 279 typedef enum {
 280         CMD_MODULE_GET_INFO = 1,
 281 } CmdModule;
 282
 283 typedef enum {
 284         CMD_METHOD_GET_NAME = 1,
 285         CMD_METHOD_GET_DECLARING_TYPE = 2,
 286         CMD_METHOD_GET_DEBUG_INFO = 3,
 287         CMD_METHOD_GET_PARAM_INFO = 4,
 288         CMD_METHOD_GET_LOCALS_INFO = 5,
 289         CMD_METHOD_GET_INFO = 6,
 290         CMD_METHOD_GET_BODY = 7,
 291         CMD_METHOD_RESOLVE_TOKEN = 8,
 292 } CmdMethod;
 293
 294 typedef enum {
 295         CMD_TYPE_GET_INFO = 1,
 296         CMD_TYPE_GET_METHODS = 2,
 297         CMD_TYPE_GET_FIELDS = 3,
 298         CMD_TYPE_GET_VALUES = 4,
 299         CMD_TYPE_GET_OBJECT = 5,
 300         CMD_TYPE_GET_SOURCE_FILES = 6,
 301         CMD_TYPE_SET_VALUES = 7,
 302         CMD_TYPE_IS_ASSIGNABLE_FROM = 8,
 303         CMD_TYPE_GET_PROPERTIES = 9,
 304         CMD_TYPE_GET_CATTRS = 10,
 305         CMD_TYPE_GET_FIELD_CATTRS = 11,
 306         CMD_TYPE_GET_PROPERTY_CATTRS = 12
 307 } CmdType;
 308
 309 typedef enum {
 310         CMD_STACK_FRAME_GET_VALUES = 1,
 311         CMD_STACK_FRAME_GET_THIS = 2,
 312         CMD_STACK_FRAME_SET_VALUES = 3
 313 } CmdStackFrame;
 314
 315 typedef enum {
 316         CMD_ARRAY_REF_GET_LENGTH = 1,
 317         CMD_ARRAY_REF_GET_VALUES = 2,
 318         CMD_ARRAY_REF_SET_VALUES = 3,
 319 } CmdArray;
 320
 321 typedef enum {
 322         CMD_STRING_REF_GET_VALUE = 1,
 323 } CmdString;
 324
 325 typedef enum {
 326         CMD_OBJECT_REF_GET_TYPE = 1,
 327         CMD_OBJECT_REF_GET_VALUES = 2,
 328         CMD_OBJECT_REF_IS_COLLECTED = 3,
 329         CMD_OBJECT_REF_GET_ADDRESS = 4,
 330         CMD_OBJECT_REF_GET_DOMAIN = 5,
 331         CMD_OBJECT_REF_SET_VALUES = 6
 332 } CmdObject;
 333
 334 typedef struct {
 335         ModifierKind kind;
 336         union {
 337                 int count; /* For kind == MOD_KIND_COUNT */
 338                 MonoInternalThread *thread; /* For kind == MOD_KIND_THREAD_ONLY */
 339                 MonoClass *exc_class; /* For kind == MONO_KIND_EXCEPTION_ONLY */
 340                 MonoAssembly **assemblies; /* For kind == MONO_KIND_ASSEMBLY_ONLY */
 341         } data;
 342 } Modifier;
 343
 344 typedef struct{
 345         int id;
 346         int event_kind;
 347         int suspend_policy;
 348         int nmodifiers;
 349         gpointer info;
 350         Modifier modifiers [MONO_ZERO_LEN_ARRAY];
 351 } EventRequest;
 352
 353 /*
 354  * Describes a single step request.
 355  */
 356 typedef struct {
 357         EventRequest *req;
 358         MonoInternalThread *thread;
 359         StepDepth depth;
 360         StepSize size;
 361         gpointer last_sp;
 362         gpointer start_sp;
 363         MonoMethod *last_method;
 364         int last_line;
 365 } MonoSingleStepReq;
 366
 367 /* Dummy structure used for the profiler callbacks */
 368 typedef struct {
 369         void* dummy;
 370 } DebuggerProfiler;
 371
 372 #define DEBUG(level,s) do { if (G_UNLIKELY ((level) <= log_level)) { s; fflush (log_file); } } while (0)
 373
 374 /*
 375  * Globals
 376  */
 377
 378 static AgentConfig agent_config;
 379
 380 /*
 381  * Whenever the agent is fully initialized.
 382  * When using the onuncaught or onthrow options, only some parts of the agent are
 383  * initialized on startup, and the full initialization which includes connection
 384  * establishment and the startup of the agent thread is only done in response to
 385  * an event.
 386  */
 387 static gint32 inited;
 388
 389 static int conn_fd;
 390
 391 static int packet_id = 0;
 392
 393 static int objref_id = 0;
 394
 395 static int event_request_id = 0;
 396
 397 static int frame_id = 0;
 398
 399 static GPtrArray *event_requests;
 400
 401 static guint32 debugger_tls_id;
 402
 403 static gboolean vm_start_event_sent, vm_death_event_sent, disconnected;
 404
 405 /* Maps MonoInternalThread -> DebuggerTlsData */
 406 static MonoGHashTable *thread_to_tls;
 407
 408 /* Maps tid -> MonoInternalThread */
 409 static MonoGHashTable *tid_to_thread;
 410
 411 /* Maps tid -> MonoThread (not MonoInternalThread) */
 412 static MonoGHashTable *tid_to_thread_obj;
 413
 414 static gsize debugger_thread_id;
 415
 416 static HANDLE debugger_thread_handle;
 417
 418 static int log_level;
 419
 420 static FILE *log_file;
 421
 422 /* Classes whose class load event has been sent */
 423 static GHashTable *loaded_classes;
 424
 425 /* Assemblies whose assembly load event has no been sent yet */
 426 static GPtrArray *pending_assembly_loads;
 427
 428 /* Whenever the debugger thread has exited */
 429 static gboolean debugger_thread_exited;
 430
 431 /* Cond variable used to wait for debugger_thread_exited becoming true */
 432 static mono_cond_t debugger_thread_exited_cond = MONO_COND_INITIALIZER;
 433
 434 /* Mutex for the cond var above */
 435 static mono_mutex_t debugger_thread_exited_mutex = MONO_MUTEX_INITIALIZER;
 436
 437 static DebuggerProfiler debugger_profiler;
 438
 439 /* The single step request instance */
 440 static MonoSingleStepReq *ss_req = NULL;
 441
 442 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
 443 /* Number of single stepping operations in progress */
 444 static int ss_count;
 445 #endif
 446
 447 static void transport_connect (const char *host, int port);
 448
 449 static guint32 WINAPI debugger_thread (void *arg);
 450
 451 static void runtime_initialized (MonoProfiler *prof);
 452
 453 static void runtime_shutdown (MonoProfiler *prof);
 454
 455 static void thread_startup (MonoProfiler *prof, gsize tid);
 456
 457 static void thread_end (MonoProfiler *prof, gsize tid);
 458
 459 static void appdomain_load (MonoProfiler *prof, MonoDomain *domain, int result);
 460
 461 static void appdomain_unload (MonoProfiler *prof, MonoDomain *domain);
 462
 463 static void assembly_load (MonoProfiler *prof, MonoAssembly *assembly, int result);
 464
 465 static void assembly_unload (MonoProfiler *prof, MonoAssembly *assembly);
 466
 467 static void start_runtime_invoke (MonoProfiler *prof, MonoMethod *method);
 468
 469 static void end_runtime_invoke (MonoProfiler *prof, MonoMethod *method);
 470
 471 static void jit_end (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *jinfo, int result);
 472
 473 static void add_pending_breakpoints (MonoMethod *method, MonoJitInfo *jinfo);
 474
 475 static void start_single_stepping (void);
 476
 477 static void stop_single_stepping (void);
 478
 479 static void suspend_current (void);
 480
 481 /* Submodule init/cleanup */
 482 static void breakpoints_init (void);
 483 static void breakpoints_cleanup (void);
 484
 485 static void objrefs_init (void);
 486 static void objrefs_cleanup (void);
 487
 488 static void ids_init (void);
 489 static void ids_cleanup (void);
 490
 491 static void suspend_init (void);
 492
 493 static ErrorCode ss_start (MonoInternalThread *thread, StepSize size, StepDepth depth, EventRequest *req);
 494 static void ss_stop (EventRequest *req);
 495
 496 static void start_debugger_thread (void);
 497
 498 static void finish_agent_init (gboolean on_startup);
 499
 500 static int
 501 parse_address (char *address, char **host, int *port)
 502 {
 503         char *pos = strchr (address, ':');
 504
 505         if (pos == NULL || pos == address)
 506                 return 1;
 507
 508         *host = g_malloc (pos - address + 1);
 509         strncpy (*host, address, pos - address);
 510         (*host) [pos - address] = '\0';
 511
 512         *port = atoi (pos + 1);
 513
 514         return 0;
 515 }
 516
 517 static void
 518 print_usage (void)
 519 {
 520         fprintf (stderr, "Usage: mono --debugger-agent=[<option>=<value>,...] ...\n");
 521         fprintf (stderr, "Available options:\n");
 522         fprintf (stderr, "  transport=<transport>\t\tTransport to use for connecting to the debugger (mandatory, possible values: 'dt_socket')\n");
 523         fprintf (stderr, "  address=<hostname>:<port>\tAddress to connect to (mandatory)\n");
 524         fprintf (stderr, "  loglevel=<n>\t\t\tLog level (defaults to 0)\n");
 525         fprintf (stderr, "  logfile=<file>\t\tFile to log to (defaults to stdout)\n");
 526         fprintf (stderr, "  suspend=y/n\t\t\tWhenever to suspend after startup.\n");
 527         fprintf (stderr, "  timeout=<n>\t\t\tTimeout for connecting in milliseconds.\n");
 528         fprintf (stderr, "  help\t\t\t\tPrint this help.\n");
 529 }
 530
 531 static gboolean
 532 parse_flag (const char *option, char *flag)
 533 {
 534         if (!strcmp (flag, "y"))
 535                 return TRUE;
 536         else if (!strcmp (flag, "n"))
 537                 return FALSE;
 538         else {
 539                 fprintf (stderr, "debugger-agent: The valid values for the '%s' option are 'y' and 'n'.\n", option);
 540                 exit (1);
 541                 return FALSE;
 542         }
 543 }
 544
 545 void
 546 mono_debugger_agent_parse_options (char *options)
 547 {
 548         char **args, **ptr;
 549         char *host;
 550         int port;
 551
 552 #ifndef MONO_ARCH_SOFT_DEBUG_SUPPORTED
 553         fprintf (stderr, "--debugger-agent is not supported on this platform.\n");
 554         exit (1);
 555 #endif
 556
 557         agent_config.enabled = TRUE;
 558         agent_config.suspend = TRUE;
 559         agent_config.server = FALSE;
 560
 561         args = g_strsplit (options, ",", -1);
 562         for (ptr = args; ptr && *ptr; ptr ++) {
 563                 char *arg = *ptr;
 564
 565                 if (strncmp (arg, "transport=", 10) == 0) {
 566                         agent_config.transport = g_strdup (arg + 10);
 567                 } else if (strncmp (arg, "address=", 8) == 0) {
 568                         agent_config.address = g_strdup (arg + 8);
 569                 } else if (strncmp (arg, "loglevel=", 9) == 0) {
 570                         agent_config.log_level = atoi (arg + 9);
 571                 } else if (strncmp (arg, "logfile=", 8) == 0) {
 572                         agent_config.log_file = g_strdup (arg + 8);
 573                 } else if (strncmp (arg, "suspend=", 8) == 0) {
 574                         agent_config.suspend = parse_flag ("suspend", arg + 8);
 575                 } else if (strncmp (arg, "server=", 7) == 0) {
 576                         agent_config.server = parse_flag ("server", arg + 7);
 577                 } else if (strncmp (arg, "onuncaught=", 11) == 0) {
 578                         agent_config.onuncaught = parse_flag ("onuncaught", arg + 11);
 579                 } else if (strncmp (arg, "onthrow=", 8) == 0) {
 580                         /* We support multiple onthrow= options */
 581                         agent_config.onthrow = g_slist_append (agent_config.onthrow, g_strdup (arg + 8));
 582                 } else if (strncmp (arg, "help", 4) == 0) {
 583                         print_usage ();
 584                         exit (0);
 585                 } else if (strncmp (arg, "timeout=", 8) == 0) {
 586                         agent_config.timeout = atoi (arg + 8);
 587                 } else if (strncmp (arg, "launch=", 7) == 0) {
 588                         agent_config.launch = g_strdup (arg + 7);
 589                 } else {
 590                         print_usage ();
 591                         exit (1);
 592                 }
 593         }
 594
 595         if (agent_config.transport == NULL) {
 596                 fprintf (stderr, "debugger-agent: The 'transport' option is mandatory.\n");
 597                 exit (1);
 598         }
 599         if (strcmp (agent_config.transport, "dt_socket") != 0) {
 600                 fprintf (stderr, "debugger-agent: The only supported value for the 'transport' option is 'dt_socket'.\n");
 601                 exit (1);
 602         }
 603
 604         if (agent_config.address == NULL && !agent_config.server) {
 605                 fprintf (stderr, "debugger-agent: The 'address' option is mandatory.\n");
 606                 exit (1);
 607         }
 608
 609         if (agent_config.address && parse_address (agent_config.address, &host, &port)) {
 610                 fprintf (stderr, "debugger-agent: The format of the 'address' options is '<host>:<port>'\n");
 611                 exit (1);
 612         }
 613 }
 614
 615 void
 616 mono_debugger_agent_init (void)
 617 {
 618         if (!agent_config.enabled)
 619                 return;
 620
 621         /* Need to know whenever a thread has acquired the loader mutex */
 622         mono_loader_lock_track_ownership (TRUE);
 623
 624         event_requests = g_ptr_array_new ();
 625
 626         mono_profiler_install ((MonoProfiler*)&debugger_profiler, runtime_shutdown);
 627         mono_profiler_set_events (MONO_PROFILE_APPDOMAIN_EVENTS | MONO_PROFILE_THREADS | MONO_PROFILE_ASSEMBLY_EVENTS | MONO_PROFILE_JIT_COMPILATION | MONO_PROFILE_METHOD_EVENTS);
 628         mono_profiler_install_runtime_initialized (runtime_initialized);
 629         mono_profiler_install_appdomain (NULL, appdomain_load, appdomain_unload, NULL);
 630         mono_profiler_install_thread (thread_startup, thread_end);
 631         mono_profiler_install_assembly (NULL, assembly_load, assembly_unload, NULL);
 632         mono_profiler_install_jit_end (jit_end);
 633         mono_profiler_install_method_invoke (start_runtime_invoke, end_runtime_invoke);
 634
 635         debugger_tls_id = TlsAlloc ();
 636
 637         thread_to_tls = mono_g_hash_table_new (NULL, NULL);
 638         MONO_GC_REGISTER_ROOT (thread_to_tls);
 639
 640         tid_to_thread = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC);
 641         MONO_GC_REGISTER_ROOT (tid_to_thread);
 642
 643         tid_to_thread_obj = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC);
 644         MONO_GC_REGISTER_ROOT (tid_to_thread_obj);
 645
 646         loaded_classes = g_hash_table_new (mono_aligned_addr_hash, NULL);
 647         pending_assembly_loads = g_ptr_array_new ();
 648
 649         log_level = agent_config.log_level;
 650
 651         if (agent_config.log_file) {
 652                 log_file = fopen (agent_config.log_file, "w+");
 653                 if (!log_file) {
 654                         fprintf (stderr, "Unable to create log file '%s': %s.\n", agent_config.log_file, strerror (errno));
 655                         exit (1);
 656                 }
 657         } else {
 658                 log_file = stdout;
 659         }
 660
 661         ids_init ();
 662         objrefs_init ();
 663         breakpoints_init ();
 664         suspend_init ();
 665
 666         mini_get_debug_options ()->gen_seq_points = TRUE;
 667         /*
 668          * This is needed because currently we don't handle liveness info.
 669          */
 670         mini_get_debug_options ()->mdb_optimizations = TRUE;
 671
 672         /* This is needed because we can't set local variables in registers yet */
 673         mono_disable_optimizations (MONO_OPT_LINEARS);
 674
 675         if (!agent_config.onuncaught && !agent_config.onthrow)
 676                 finish_agent_init (TRUE);
 677 }
 678
 679 /*
 680  * finish_agent_init:
 681  *
 682  *   Finish the initialization of the agent. This involves connecting the transport
 683  * and starting the agent thread. This is either done at startup, or
 684  * in response to some event like an unhandled exception.
 685  */
 686 static void
 687 finish_agent_init (gboolean on_startup)
 688 {
 689         char *host;
 690         int port;
 691         int res;
 692
 693         if (InterlockedCompareExchange (&inited, 1, 0) == 1)
 694                 return;
 695
 696         if (agent_config.launch) {
 697                 char *argv [16];
 698
 699                 // FIXME: Generated address
 700                 // FIXME: Races with transport_connect ()
 701
 702                 argv [0] = agent_config.launch;
 703                 argv [1] = agent_config.transport;
 704                 argv [2] = agent_config.address;
 705                 argv [3] = NULL;
 706
 707                 res = g_spawn_async_with_pipes (NULL, argv, NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
 708                 if (!res) {
 709                         fprintf (stderr, "Failed to execute '%s'.\n", agent_config.launch);
 710                         exit (1);
 711                 }
 712         }
 713
 714         if (agent_config.address) {
 715                 res = parse_address (agent_config.address, &host, &port);
 716                 g_assert (res == 0);
 717         } else {
 718                 host = NULL;
 719                 port = 0;
 720         }
 721
 722         transport_connect (host, port);
 723
 724         if (!on_startup) {
 725                 /* Do some which is usually done after sending the VMStart () event */
 726                 vm_start_event_sent = TRUE;
 727                 start_debugger_thread ();
 728         }
 729 }
 730
 731 static void
 732 mono_debugger_agent_cleanup (void)
 733 {
 734         if (!inited)
 735                 return;
 736
 737         /* This will interrupt the agent thread */
 738         /* Close the read part only so it can still send back replies */
 739 #ifdef PLATFORM_WIN32
 740         shutdown (conn_fd, SD_RECEIVE);
 741 #else
 742         shutdown (conn_fd, SHUT_RD);
 743 #endif
 744
 745         /*
 746          * Wait for the thread to exit.
 747          *
 748          * If we continue with the shutdown without waiting for it, then the client might
 749          * not receive an answer to its last command like a resume.
 750          * The WaitForSingleObject infrastructure doesn't seem to work during shutdown, so
 751          * use pthreads.
 752          */
 753         //WaitForSingleObject (debugger_thread_handle, INFINITE);
 754         if (GetCurrentThreadId () != debugger_thread_id) {
 755                 mono_mutex_lock (&debugger_thread_exited_mutex);
 756                 if (!debugger_thread_exited)
 757                         mono_cond_wait (&debugger_thread_exited_cond, &debugger_thread_exited_mutex);
 758                 mono_mutex_unlock (&debugger_thread_exited_mutex);
 759         }
 760
 761         breakpoints_cleanup ();
 762         objrefs_cleanup ();
 763         ids_cleanup ();
 764 }
 765
 766 /*
 767  * transport_connect:
 768  *
 769  *   Connect/Listen on HOST:PORT. If HOST is NULL, generate an address and listen on it.
 770  */
 771 static void
 772 transport_connect (const char *host, int port)
 773 {
 774         struct addrinfo hints;
 775         struct addrinfo *result, *rp;
 776         int sfd, s, res;
 777         char port_string [128];
 778         char handshake_msg [128];
 779         guint8 buf [128];
 780
 781         conn_fd = -1;
 782
 783         if (host) {
 784                 sprintf (port_string, "%d", port);
 785
 786                 /* Obtain address(es) matching host/port */
 787
 788                 memset (&hints, 0, sizeof (struct addrinfo));
 789                 hints.ai_family = AF_UNSPEC;    /* Allow IPv4 or IPv6 */
 790                 hints.ai_socktype = SOCK_STREAM; /* Datagram socket */
 791                 hints.ai_flags = 0;
 792                 hints.ai_protocol = 0;          /* Any protocol */
 793
 794                 s = getaddrinfo (host, port_string, &hints, &result);
 795                 if (s != 0) {
 796                         fprintf (stderr, "debugger-agent: Unable to connect to %s:%d: %s\n", host, port, gai_strerror (s));
 797                         exit (1);
 798                 }
 799         }
 800
 801         if (agent_config.server) {
 802                 /* Wait for a connection */
 803                 if (!host) {
 804                         struct sockaddr_in addr;
 805                         socklen_t addrlen;
 806
 807                         /* No address, generate one */
 808                         sfd = socket (AF_INET, SOCK_STREAM, 0);
 809                         g_assert (sfd);
 810
 811                         /* This will bind the socket to a random port */
 812                         res = listen (sfd, 16);
 813                         if (res == -1) {
 814                                 fprintf (stderr, "debugger-agent: Unable to setup listening socket: %s\n", strerror (errno));
 815                                 exit (1);
 816                         }
 817
 818                         addrlen = sizeof (addr);
 819                         memset (&addr, 0, sizeof (addr));
 820                         res = getsockname (sfd, &addr, &addrlen);
 821                         g_assert (res == 0);
 822
 823                         host = "127.0.0.1";
 824                         port = ntohs (addr.sin_port);
 825
 826                         /* Emit the address to stdout */
 827                         /* FIXME: Should print another interface, not localhost */
 828                         printf ("%s:%d\n", host, port);
 829                 } else {
 830                         /* Listen on the provided address */
 831                         for (rp = result; rp != NULL; rp = rp->ai_next) {
 832                                 sfd = socket (rp->ai_family, rp->ai_socktype,
 833                                                           rp->ai_protocol);
 834                                 if (sfd == -1)
 835                                         continue;
 836
 837                                 res = bind (sfd, rp->ai_addr, rp->ai_addrlen);
 838                                 if (res == -1)
 839                                         continue;
 840
 841                                 res = listen (sfd, 16);
 842                                 if (res == -1)
 843                                         continue;
 844                                 break;
 845                         }
 846
 847                         freeaddrinfo (result);
 848                 }
 849
 850                 DEBUG (1, fprintf (log_file, "Listening on %s:%d (timeout=%d ms)...\n", host, port, agent_config.timeout));
 851
 852                 if (agent_config.timeout) {
 853                         fd_set readfds;
 854                         struct timeval tv;
 855
 856                         tv.tv_sec = 0;
 857                         tv.tv_usec = agent_config.timeout * 1000;
 858                         FD_ZERO (&readfds);
 859                         FD_SET (sfd, &readfds);
 860                         res = select (sfd + 1, &readfds, NULL, NULL, &tv);
 861                         if (res == 0) {
 862                                 fprintf (stderr, "debugger-agent: Timed out waiting to connect.\n");
 863                                 exit (1);
 864                         }
 865                 }
 866
 867                 conn_fd = accept (sfd, NULL, NULL);
 868                 if (conn_fd == -1) {
 869                         fprintf (stderr, "debugger-agent: Unable to listen on %s:%d\n", host, port);
 870                         exit (1);
 871                 }
 872
 873                 DEBUG (1, fprintf (log_file, "Accepted connection from client, socket fd=%d.\n", conn_fd));
 874         } else {
 875                 /* Connect to the specified address */
 876                 /* FIXME: Respect the timeout */
 877                 for (rp = result; rp != NULL; rp = rp->ai_next) {
 878                         sfd = socket (rp->ai_family, rp->ai_socktype,
 879                                                   rp->ai_protocol);
 880                         if (sfd == -1)
 881                                 continue;
 882
 883                         if (connect (sfd, rp->ai_addr, rp->ai_addrlen) != -1)
 884                                 break;       /* Success */
 885
 886                         close (sfd);
 887                 }
 888
 889                 conn_fd = sfd;
 890
 891                 freeaddrinfo (result);
 892
 893                 if (rp == 0) {
 894                         fprintf (stderr, "debugger-agent: Unable to connect to %s:%d\n", host, port);
 895                         exit (1);
 896                 }
 897         }
 898
 899         /* Write handshake message */
 900         sprintf (handshake_msg, "DWP-Handshake");
 901         res = write (conn_fd, handshake_msg, strlen (handshake_msg));
 902         g_assert (res != -1);
 903
 904         /* Read answer */
 905         res = read (conn_fd, buf, strlen (handshake_msg));
 906         if ((res != strlen (handshake_msg)) || (memcmp (buf, handshake_msg, strlen (handshake_msg) != 0))) {
 907                 fprintf (stderr, "debugger-agent: DWP handshake failed.\n");
 908                 exit (1);
 909         }
 910
 911         /*
 912          * Set TCP_NODELAY on the socket so the client receives events/command
 913          * results immediately.
 914          */
 915         {
 916                 int flag = 1;
 917                 int result = setsockopt(conn_fd,
 918                                  IPPROTO_TCP,
 919                                  TCP_NODELAY,
 920                                  (char *) &flag,
 921                                  sizeof(int));
 922                 g_assert (result >= 0);
 923         }
 924 }
 925
 926 static gboolean
 927 transport_send (guint8 *data, int len)
 928 {
 929         int res;
 930
 931         res = write (conn_fd, data, len);
 932         if (res != len)
 933                 return FALSE;
 934         else
 935                 return TRUE;
 936 }
 937
 938 static void
 939 start_debugger_thread (void)
 940 {
 941         gsize tid;
 942
 943         debugger_thread_handle = mono_create_thread (NULL, 0, debugger_thread, NULL, 0, &tid);
 944         g_assert (debugger_thread_handle);
 945 }
 946
 947 /*
 948  * Functions to decode protocol data
 949  */
 950
 951 static inline int
 952 decode_byte (guint8 *buf, guint8 **endbuf, guint8 *limit)
 953 {
 954         *endbuf = buf + 1;
 955         g_assert (*endbuf <= limit);
 956         return buf [0];
 957 }
 958
 959 static inline int
 960 decode_int (guint8 *buf, guint8 **endbuf, guint8 *limit)
 961 {
 962         *endbuf = buf + 4;
 963         g_assert (*endbuf <= limit);
 964
 965         return (((int)buf [0]) << 24) | (((int)buf [1]) << 16) | (((int)buf [2]) << 8) | (((int)buf [3]) << 0);
 966 }
 967
 968 static inline gint64
 969 decode_long (guint8 *buf, guint8 **endbuf, guint8 *limit)
 970 {
 971         guint32 high = decode_int (buf, &buf, limit);
 972         guint32 low = decode_int (buf, &buf, limit);
 973
 974         *endbuf = buf;
 975
 976         return ((((guint64)high) << 32) | ((guint64)low));
 977 }
 978
 979 static inline int
 980 decode_id (guint8 *buf, guint8 **endbuf, guint8 *limit)
 981 {
 982         return decode_int (buf, endbuf, limit);
 983 }
 984
 985 static inline char*
 986 decode_string (guint8 *buf, guint8 **endbuf, guint8 *limit)
 987 {
 988         int len = decode_int (buf, &buf, limit);
 989         char *s;
 990
 991         s = g_malloc (len + 1);
 992         g_assert (s);
 993
 994         memcpy (s, buf, len);
 995         s [len] = '\0';
 996         buf += len;
 997         *endbuf = buf;
 998
 999         return s;
1000 }
1001
1002 /*
1003  * Functions to encode protocol data
1004  */
1005
1006 typedef struct {
1007         guint8 *buf, *p, *end;
1008 } Buffer;
1009
1010 static inline void
1011 buffer_init (Buffer *buf, int size)
1012 {
1013         buf->buf = g_malloc (size);
1014         buf->p = buf->buf;
1015         buf->end = buf->buf + size;
1016 }
1017
1018 static inline void
1019 buffer_make_room (Buffer *buf, int size)
1020 {
1021         if (buf->end - buf->p < size) {
1022                 int new_size = buf->end - buf->buf + size + 32;
1023                 guint8 *p = g_realloc (buf->buf, new_size);
1024                 size = buf->p - buf->buf;
1025                 buf->buf = p;
1026                 buf->p = p + size;
1027                 buf->end = buf->buf + new_size;
1028         }
1029 }
1030
1031 static inline void
1032 buffer_add_byte (Buffer *buf, guint8 val)
1033 {
1034         buffer_make_room (buf, 1);
1035         buf->p [0] = val;
1036         buf->p++;
1037 }
1038
1039 static inline void
1040 buffer_add_int (Buffer *buf, guint32 val)
1041 {
1042         buffer_make_room (buf, 4);
1043         buf->p [0] = (val >> 24) & 0xff;
1044         buf->p [1] = (val >> 16) & 0xff;
1045         buf->p [2] = (val >> 8) & 0xff;
1046         buf->p [3] = (val >> 0) & 0xff;
1047         buf->p += 4;
1048 }
1049
1050 static inline void
1051 buffer_add_long (Buffer *buf, guint64 l)
1052 {
1053         buffer_add_int (buf, (l >> 32) & 0xffffffff);
1054         buffer_add_int (buf, (l >> 0) & 0xffffffff);
1055 }
1056
1057 static inline void
1058 buffer_add_id (Buffer *buf, int id)
1059 {
1060         buffer_add_int (buf, (guint64)id);
1061 }
1062
1063 static inline void
1064 buffer_add_data (Buffer *buf, guint8 *data, int len)
1065 {
1066         buffer_make_room (buf, len);
1067         memcpy (buf->p, data, len);
1068         buf->p += len;
1069 }
1070
1071 static inline void
1072 buffer_add_string (Buffer *buf, const char *str)
1073 {
1074         int len;
1075
1076         if (str == NULL) {
1077                 buffer_add_int (buf, 0);
1078         } else {
1079                 len = strlen (str);
1080                 buffer_add_int (buf, len);
1081                 buffer_add_data (buf, (guint8*)str, len);
1082         }
1083 }
1084
1085 static inline void
1086 buffer_free (Buffer *buf)
1087 {
1088         g_free (buf->buf);
1089 }
1090
1091 static gboolean
1092 send_packet (int command_set, int command, Buffer *data)
1093 {
1094         Buffer buf;
1095         int len, id;
1096         gboolean res;
1097
1098         id = InterlockedIncrement (&packet_id);
1099
1100         len = data->p - data->buf + 11;
1101         buffer_init (&buf, len);
1102         buffer_add_int (&buf, len);
1103         buffer_add_int (&buf, id);
1104         buffer_add_byte (&buf, 0); /* flags */
1105         buffer_add_byte (&buf, command_set);
1106         buffer_add_byte (&buf, command);
1107         memcpy (buf.buf + 11, data->buf, data->p - data->buf);
1108
1109         res = transport_send (buf.buf, len);
1110
1111         buffer_free (&buf);
1112
1113         return res;
1114 }
1115
1116 static gboolean
1117 send_reply_packet (int id, int error, Buffer *data)
1118 {
1119         Buffer buf;
1120         int len;
1121         gboolean res;
1122
1123         len = data->p - data->buf + 11;
1124         buffer_init (&buf, len);
1125         buffer_add_int (&buf, len);
1126         buffer_add_int (&buf, id);
1127         buffer_add_byte (&buf, 0x80); /* flags */
1128         buffer_add_byte (&buf, (error >> 8) & 0xff);
1129         buffer_add_byte (&buf, error);
1130         memcpy (buf.buf + 11, data->buf, data->p - data->buf);
1131
1132         res = transport_send (buf.buf, len);
1133
1134         buffer_free (&buf);
1135
1136         return res;
1137 }
1138
1139 /*
1140  * OBJECT IDS
1141  */
1142
1143 /*
1144  * Represents an object accessible by the debugger client.
1145  */
1146 typedef struct {
1147         /* Unique id used in the wire protocol to refer to objects */
1148         int id;
1149         /*
1150          * A weakref gc handle pointing to the object. The gc handle is used to
1151          * detect if the object was garbage collected.
1152          */
1153         guint32 handle;
1154 } ObjRef;
1155
1156 /* Maps objid -> ObjRef */
1157 static GHashTable *objrefs;
1158
1159 static void
1160 free_objref (gpointer value)
1161 {
1162         ObjRef *o = value;
1163
1164         mono_gchandle_free (o->handle);
1165
1166         g_free (o);
1167 }
1168
1169 static void
1170 objrefs_init (void)
1171 {
1172         objrefs = g_hash_table_new_full (NULL, NULL, NULL, free_objref);
1173 }
1174
1175 static void
1176 objrefs_cleanup (void)
1177 {
1178         g_hash_table_destroy (objrefs);
1179         objrefs = NULL;
1180 }
1181
1182 static GHashTable *obj_to_objref;
1183
1184 /*
1185  * Return an ObjRef for OBJ.
1186  */
1187 static ObjRef*
1188 get_objref (MonoObject *obj)
1189 {
1190         ObjRef *ref;
1191
1192         if (obj == NULL)
1193                 return 0;
1194
1195 #ifdef HAVE_SGEN_GC
1196         NOT_IMPLEMENTED;
1197 #endif
1198
1199         /* Use a hash table with masked pointers to internalize object references */
1200         /* FIXME: This can grow indefinitely */
1201         mono_loader_lock ();
1202
1203         if (!obj_to_objref)
1204                 obj_to_objref = g_hash_table_new (NULL, NULL);
1205
1206         ref = g_hash_table_lookup (obj_to_objref, GINT_TO_POINTER (~((gsize)obj)));
1207         /* ref might refer to a different object with the same addr which was GCd */
1208         if (ref && mono_gchandle_get_target (ref->handle) == obj) {
1209                 mono_loader_unlock ();
1210                 return ref;
1211         }
1212
1213         ref = g_new0 (ObjRef, 1);
1214         ref->id = InterlockedIncrement (&objref_id);
1215         ref->handle = mono_gchandle_new_weakref (obj, FALSE);
1216
1217         g_hash_table_insert (objrefs, GINT_TO_POINTER (ref->id), ref);
1218         g_hash_table_insert (obj_to_objref, GINT_TO_POINTER (~((gsize)obj)), ref);
1219
1220         mono_loader_unlock ();
1221
1222         return ref;
1223 }
1224
1225 static inline int
1226 get_objid (MonoObject *obj)
1227 {
1228         return get_objref (obj)->id;
1229 }
1230
1231 /*
1232  * Set OBJ to the object identified by OBJID.
1233  * Returns 0 or an error code if OBJID is invalid or the object has been garbage
1234  * collected.
1235  */
1236 static ErrorCode
1237 get_object_allow_null (int objid, MonoObject **obj)
1238 {
1239         ObjRef *ref;
1240
1241         if (objid == 0) {
1242                 *obj = NULL;
1243                 return 0;
1244         }
1245
1246         if (!objrefs)
1247                 return ERR_INVALID_OBJECT;
1248
1249         mono_loader_lock ();
1250
1251         ref = g_hash_table_lookup (objrefs, GINT_TO_POINTER (objid));
1252
1253         if (ref) {
1254                 *obj = mono_gchandle_get_target (ref->handle);
1255                 mono_loader_unlock ();
1256                 if (!(*obj))
1257                         return ERR_INVALID_OBJECT;
1258                 return 0;
1259         } else {
1260                 mono_loader_unlock ();
1261                 return ERR_INVALID_OBJECT;
1262         }
1263 }
1264
1265 static ErrorCode
1266 get_object (int objid, MonoObject **obj)
1267 {
1268         int err = get_object_allow_null (objid, obj);
1269
1270         if (err)
1271                 return err;
1272         if (!(*obj))
1273                 return ERR_INVALID_OBJECT;
1274         return 0;
1275 }
1276
1277 static inline int
1278 decode_objid (guint8 *buf, guint8 **endbuf, guint8 *limit)
1279 {
1280         return decode_id (buf, endbuf, limit);
1281 }
1282
1283 static inline void
1284 buffer_add_objid (Buffer *buf, MonoObject *o)
1285 {
1286         buffer_add_id (buf, get_objid (o));
1287 }
1288
1289 /*
1290  * IDS
1291  */
1292
1293 typedef enum {
1294         ID_ASSEMBLY = 0,
1295         ID_MODULE = 1,
1296         ID_TYPE = 2,
1297         ID_METHOD = 3,
1298         ID_FIELD = 4,
1299         ID_DOMAIN = 5,
1300         ID_PROPERTY = 6,
1301         ID_NUM
1302 } IdType;
1303
1304 /*
1305  * Represents a runtime structure accessible to the debugger client
1306  */
1307 typedef struct {
1308         /* Unique id used in the wire protocol */
1309         int id;
1310         /* Domain of the runtime structure, NULL if the domain was unloaded */
1311         MonoDomain *domain;
1312         union {
1313                 gpointer val;
1314                 MonoClass *klass;
1315                 MonoMethod *method;
1316                 MonoImage *image;
1317                 MonoAssembly *assembly;
1318                 MonoClassField *field;
1319                 MonoDomain *domain;
1320                 MonoProperty *property;
1321         } data;
1322 } Id;
1323
1324 typedef struct {
1325         /* Maps runtime structure -> Id */
1326         GHashTable *val_to_id [ID_NUM];
1327 } AgentDomainInfo;
1328
1329 /* Maps id -> Id */
1330 static GPtrArray *ids [ID_NUM];
1331
1332 static void
1333 ids_init (void)
1334 {
1335         int i;
1336
1337         for (i = 0; i < ID_NUM; ++i)
1338                 ids [i] = g_ptr_array_new ();
1339 }
1340
1341 static void
1342 ids_cleanup (void)
1343 {
1344         int i, j;
1345
1346         for (i = 0; i < ID_NUM; ++i) {
1347                 if (ids [i]) {
1348                         for (j = 0; j < ids [i]->len; ++j)
1349                                 g_free (g_ptr_array_index (ids [i], j));
1350                         g_ptr_array_free (ids [i], TRUE);
1351                 }
1352                 ids [i] = NULL;
1353         }
1354 }
1355
1356 void
1357 mono_debugger_agent_free_domain_info (MonoDomain *domain)
1358 {
1359         AgentDomainInfo *info = domain_jit_info (domain)->agent_info;
1360         int i, j;
1361
1362         if (info) {
1363                 for (i = 0; i < ID_NUM; ++i)
1364                         if (info->val_to_id [i])
1365                                 g_hash_table_destroy (info->val_to_id [i]);
1366                 g_free (info);
1367         }
1368
1369         domain_jit_info (domain)->agent_info = NULL;
1370
1371         /* Clear ids referencing structures in the domain */
1372         for (i = 0; i < ID_NUM; ++i) {
1373                 if (ids [i]) {
1374                         for (j = 0; j < ids [i]->len; ++j) {
1375                                 Id *id = g_ptr_array_index (ids [i], j);
1376                                 if (id->domain == domain)
1377                                         id->domain = NULL;
1378                         }
1379                 }
1380         }
1381 }
1382
1383 static int
1384 get_id (MonoDomain *domain, IdType type, gpointer val)
1385 {
1386         Id *id;
1387         AgentDomainInfo *info;
1388
1389         if (val == NULL)
1390                 return 0;
1391
1392         mono_loader_lock ();
1393
1394         mono_domain_lock (domain);
1395
1396         if (!domain_jit_info (domain)->agent_info)
1397                 domain_jit_info (domain)->agent_info = g_new0 (AgentDomainInfo, 1);
1398         info = domain_jit_info (domain)->agent_info;
1399         if (info->val_to_id [type] == NULL)
1400                 info->val_to_id [type] = g_hash_table_new (mono_aligned_addr_hash, NULL);
1401
1402         id = g_hash_table_lookup (info->val_to_id [type], val);
1403         if (id) {
1404                 mono_domain_unlock (domain);
1405                 mono_loader_unlock ();
1406                 return id->id;
1407         }
1408
1409         id = g_new0 (Id, 1);
1410         /* Reserve id 0 */
1411         id->id = ids [type]->len + 1;
1412         id->domain = domain;
1413         id->data.val = val;
1414
1415         g_hash_table_insert (info->val_to_id [type], val, id);
1416
1417         mono_domain_unlock (domain);
1418
1419         g_ptr_array_add (ids [type], id);
1420
1421         mono_loader_unlock ();
1422
1423         return id->id;
1424 }
1425
1426 static inline gpointer
1427 decode_ptr_id (guint8 *buf, guint8 **endbuf, guint8 *limit, IdType type, MonoDomain **domain, int *err)
1428 {
1429         Id *res;
1430
1431         int id = decode_id (buf, endbuf, limit);
1432
1433         *err = 0;
1434         if (domain)
1435                 *domain = NULL;
1436
1437         if (id == 0)
1438                 return NULL;
1439
1440         // FIXME: error handling
1441         mono_loader_lock ();
1442         g_assert (id > 0 && id <= ids [type]->len);
1443
1444         res = g_ptr_array_index (ids [type], GPOINTER_TO_INT (id - 1));
1445         mono_loader_unlock ();
1446
1447         if (res->domain == NULL) {
1448                 *err = ERR_UNLOADED;
1449                 return NULL;
1450         }
1451
1452         if (domain)
1453                 *domain = res->domain;
1454
1455         return res->data.val;
1456 }
1457
1458 static inline void
1459 buffer_add_ptr_id (Buffer *buf, MonoDomain *domain, IdType type, gpointer val)
1460 {
1461         buffer_add_id (buf, get_id (domain, type, val));
1462 }
1463
1464 static inline MonoClass*
1465 decode_typeid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1466 {
1467         return decode_ptr_id (buf, endbuf, limit, ID_TYPE, domain, err);
1468 }
1469
1470 static inline MonoAssembly*
1471 decode_assemblyid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1472 {
1473         return decode_ptr_id (buf, endbuf, limit, ID_ASSEMBLY, domain, err);
1474 }
1475
1476 static inline MonoImage*
1477 decode_moduleid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1478 {
1479         return decode_ptr_id (buf, endbuf, limit, ID_MODULE, domain, err);
1480 }
1481
1482 static inline MonoMethod*
1483 decode_methodid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1484 {
1485         return decode_ptr_id (buf, endbuf, limit, ID_METHOD, domain, err);
1486 }
1487
1488 static inline MonoClassField*
1489 decode_fieldid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1490 {
1491         return decode_ptr_id (buf, endbuf, limit, ID_FIELD, domain, err);
1492 }
1493
1494 static inline MonoDomain*
1495 decode_domainid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1496 {
1497         return decode_ptr_id (buf, endbuf, limit, ID_DOMAIN, domain, err);
1498 }
1499
1500 static inline MonoProperty*
1501 decode_propertyid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1502 {
1503         return decode_ptr_id (buf, endbuf, limit, ID_PROPERTY, domain, err);
1504 }
1505
1506 static inline void
1507 buffer_add_typeid (Buffer *buf, MonoDomain *domain, MonoClass *klass)
1508 {
1509         buffer_add_ptr_id (buf, domain, ID_TYPE, klass);
1510 }
1511
1512 static inline void
1513 buffer_add_methodid (Buffer *buf, MonoDomain *domain, MonoMethod *method)
1514 {
1515         buffer_add_ptr_id (buf, domain, ID_METHOD, method);
1516 }
1517
1518 static inline void
1519 buffer_add_assemblyid (Buffer *buf, MonoDomain *domain, MonoAssembly *assembly)
1520 {
1521         buffer_add_ptr_id (buf, domain, ID_ASSEMBLY, assembly);
1522 }
1523
1524 static inline void
1525 buffer_add_moduleid (Buffer *buf, MonoDomain *domain, MonoImage *image)
1526 {
1527         buffer_add_ptr_id (buf, domain, ID_MODULE, image);
1528 }
1529
1530 static inline void
1531 buffer_add_fieldid (Buffer *buf, MonoDomain *domain, MonoClassField *field)
1532 {
1533         buffer_add_ptr_id (buf, domain, ID_FIELD, field);
1534 }
1535
1536 static inline void
1537 buffer_add_propertyid (Buffer *buf, MonoDomain *domain, MonoProperty *property)
1538 {
1539         buffer_add_ptr_id (buf, domain, ID_PROPERTY, property);
1540 }
1541
1542 static inline void
1543 buffer_add_domainid (Buffer *buf, MonoDomain *domain)
1544 {
1545         buffer_add_ptr_id (buf, domain, ID_DOMAIN, domain);
1546 }
1547
1548 static void invoke_method (void);
1549
1550 /*
1551  * SUSPEND/RESUME
1552  */
1553
1554 static void
1555 save_thread_context (MonoContext *ctx)
1556 {
1557         DebuggerTlsData *tls;
1558
1559         tls = TlsGetValue (debugger_tls_id);
1560         g_assert (tls);
1561
1562         if (ctx) {
1563                 memcpy (&tls->ctx, ctx, sizeof (MonoContext));
1564         } else {
1565 #ifdef MONO_INIT_CONTEXT_FROM_CURRENT
1566                 MONO_INIT_CONTEXT_FROM_CURRENT (&tls->ctx);
1567 #else
1568                 MONO_INIT_CONTEXT_FROM_FUNC (&tls->ctx, save_thread_context);
1569 #endif
1570         }
1571
1572         tls->lmf = mono_get_lmf ();
1573         tls->domain = mono_domain_get ();
1574         tls->has_context = TRUE;
1575 }
1576
1577 /* The number of times the runtime is suspended */
1578 static gint32 suspend_count;
1579
1580 /* Number of threads suspended */
1581 /*
1582  * If this is equal to the size of thread_to_tls, the runtime is considered
1583  * suspended.
1584  */
1585 static gint32 threads_suspend_count;
1586
1587 static mono_mutex_t suspend_mutex = MONO_MUTEX_INITIALIZER;
1588
1589 /* Cond variable used to wait for suspend_count becoming 0 */
1590 static mono_cond_t suspend_cond = MONO_COND_INITIALIZER;
1591
1592 /* Semaphore used to wait for a thread becoming suspended */
1593 static MonoSemType suspend_sem;
1594
1595 static void
1596 suspend_init (void)
1597 {
1598         MONO_SEM_INIT (&suspend_sem, 0);
1599 }
1600
1601 /*
1602  * mono_debugger_agent_thread_interrupt:
1603  *
1604  *   Called by the abort signal handler.
1605  */
1606 gboolean
1607 mono_debugger_agent_thread_interrupt (MonoJitInfo *ji)
1608 {
1609         DebuggerTlsData *tls;
1610
1611         if (!inited)
1612                 return FALSE;
1613
1614         tls = TlsGetValue (debugger_tls_id);
1615         if (!tls)
1616                 return FALSE;
1617
1618         /*
1619          * We use interrupt_count to determine whenever this interrupt should be processed
1620          * by us or the normal interrupt processing code in the signal handler.
1621          * There is no race here with notify_thread (), since the signal is sent after
1622          * incrementing interrupt_count.
1623          */
1624         if (tls->interrupt_count == 0)
1625                 return FALSE;
1626
1627         InterlockedDecrement (&tls->interrupt_count);
1628
1629         // FIXME: Races when the thread leaves managed code before hitting a single step
1630         // event.
1631
1632         if (ji) {
1633                 /* Running managed code, will be suspended by the single step code */
1634                 //printf ("S1: %p\n", GetCurrentThreadId ());
1635                 return TRUE;
1636         } else {
1637                 /*
1638                  * Running native code, will be suspended when it returns to/enters
1639                  * managed code. Treat it as already suspended.
1640                  */
1641                 //printf ("S2: %p\n", GetCurrentThreadId ());
1642                 if (!tls->suspended) {
1643                         tls->suspended = TRUE;
1644                         MONO_SEM_POST (&suspend_sem);
1645                 }
1646                 return TRUE;
1647         }
1648 }
1649
1650 /*
1651  * notify_thread:
1652  *
1653  *   Notify a thread that it needs to suspend.
1654  */
1655 static void
1656 notify_thread (gpointer key, gpointer value, gpointer user_data)
1657 {
1658         MonoInternalThread *thread = key;
1659         DebuggerTlsData *tls = value;
1660         gsize tid = thread->tid;
1661
1662         if (GetCurrentThreadId () != tid) {
1663                 DEBUG(1, fprintf (log_file, "[%p] Interrupting %p...\n", (gpointer)GetCurrentThreadId (), (gpointer)tid));
1664                 /*
1665                  * Maybe we could use the normal interrupt infrastructure, but that does a lot
1666                  * of things like breaking waits etc. which we don't want.
1667                  */
1668                 InterlockedIncrement (&tls->interrupt_count);
1669 #ifdef PLATFORM_WIN32
1670                 /*FIXME: Abort thread */
1671 #else
1672                 pthread_kill ((pthread_t) tid, mono_thread_get_abort_signal ());
1673 #endif
1674         }
1675 }
1676
1677 /*
1678  * suspend_vm:
1679  *
1680  * Increase the suspend count of the VM. While the suspend count is greater
1681  * than 0, runtime threads are suspended at certain points during execution.
1682  */
1683 static void
1684 suspend_vm (void)
1685 {
1686         mono_loader_lock ();
1687
1688         mono_mutex_lock (&suspend_mutex);
1689
1690         suspend_count ++;
1691
1692         DEBUG(1, fprintf (log_file, "[%p] Suspending vm...\n", (gpointer)GetCurrentThreadId ()));
1693
1694         if (suspend_count == 1) {
1695                 // FIXME: Is it safe to call this inside the lock ?
1696                 start_single_stepping ();
1697                 mono_g_hash_table_foreach (thread_to_tls, notify_thread, NULL);
1698         }
1699
1700         mono_mutex_unlock (&suspend_mutex);
1701
1702         mono_loader_unlock ();
1703 }
1704
1705 /*
1706  * resume_vm:
1707  *
1708  * Decrease the suspend count of the VM. If the count reaches 0, runtime threads
1709  * are resumed.
1710  */
1711 static void
1712 resume_vm (void)
1713 {
1714         int err;
1715
1716         g_assert (debugger_thread_id == GetCurrentThreadId ());
1717
1718         mono_loader_lock ();
1719
1720         mono_mutex_lock (&suspend_mutex);
1721
1722         g_assert (suspend_count > 0);
1723         suspend_count --;
1724
1725         DEBUG(1, fprintf (log_file, "[%p] Resuming vm...\n", (gpointer)GetCurrentThreadId ()));
1726
1727         if (suspend_count == 0) {
1728                 // FIXME: Is it safe to call this inside the lock ?
1729                 stop_single_stepping ();
1730                 err = mono_cond_broadcast (&suspend_cond);
1731                 g_assert (err == 0);
1732         }
1733
1734         err = mono_mutex_unlock (&suspend_mutex);
1735         g_assert (err == 0);
1736
1737         mono_loader_unlock ();
1738 }
1739
1740 static void
1741 invalidate_frames (DebuggerTlsData *tls)
1742 {
1743         int i;
1744
1745         if (!tls)
1746                 tls = TlsGetValue (debugger_tls_id);
1747         g_assert (tls);
1748
1749         for (i = 0; i < tls->frame_count; ++i) {
1750                 if (tls->frames [i]->jit)
1751                         mono_debug_free_method_jit_info (tls->frames [i]->jit);
1752                 g_free (tls->frames [i]);
1753         }
1754         g_free (tls->frames);
1755         tls->frame_count = 0;
1756         tls->frames = NULL;
1757 }
1758
1759 /*
1760  * suspend_current:
1761  *
1762  *   Suspend the current thread until the runtime is resumed. If the thread has a
1763  * pending invoke, then the invoke is executed before this function returns.
1764  */
1765 static void
1766 suspend_current (void)
1767 {
1768         int err;
1769         DebuggerTlsData *tls;
1770
1771         g_assert (debugger_thread_id != GetCurrentThreadId ());
1772
1773         if (mono_loader_lock_is_owned_by_self ()) {
1774                 /*
1775                  * If we own the loader mutex, can't suspend until we release it, since the
1776                  * whole runtime can deadlock otherwise.
1777                  */
1778                 return;
1779         }
1780
1781         tls = TlsGetValue (debugger_tls_id);
1782         g_assert (tls);
1783
1784         mono_mutex_lock (&suspend_mutex);
1785
1786         if (!tls->suspended) {
1787                 tls->suspended = TRUE;
1788                 MONO_SEM_POST (&suspend_sem);
1789         }
1790
1791         DEBUG(1, fprintf (log_file, "[%p] Suspended.\n", (gpointer)GetCurrentThreadId ()));
1792
1793         while (suspend_count > 0) {
1794                 err = mono_cond_wait (&suspend_cond, &suspend_mutex);
1795                 g_assert (err == 0);
1796         }
1797
1798         tls->suspended = FALSE;
1799
1800         threads_suspend_count --;
1801
1802         mono_mutex_unlock (&suspend_mutex);
1803
1804         DEBUG(1, fprintf (log_file, "[%p] Resumed.\n", (gpointer)GetCurrentThreadId ()));
1805
1806         if (tls->invoke) {
1807                 /* Save the original context */
1808                 tls->invoke->has_ctx = TRUE;
1809                 memcpy (&tls->invoke->ctx, &tls->ctx, sizeof (MonoContext));
1810
1811                 invoke_method ();
1812         }
1813
1814         /* The frame info becomes invalid after a resume */
1815         tls->has_context = FALSE;
1816         invalidate_frames (NULL);
1817 }
1818
1819 static void
1820 count_thread (gpointer key, gpointer value, gpointer user_data)
1821 {
1822         DebuggerTlsData *tls = value;
1823
1824         if (!tls->suspended && !tls->terminated)
1825                 *(int*)user_data = *(int*)user_data + 1;
1826 }
1827
1828 static int
1829 count_threads_to_wait_for (void)
1830 {
1831         int count = 0;
1832
1833         mono_loader_lock ();
1834         mono_g_hash_table_foreach (thread_to_tls, count_thread, &count);
1835         mono_loader_unlock ();
1836
1837         return count;
1838 }
1839
1840 /*
1841  * wait_for_suspend:
1842  *
1843  *   Wait until the runtime is completely suspended.
1844  */
1845 static void
1846 wait_for_suspend (void)
1847 {
1848         int nthreads, nwait, err;
1849         gboolean waited = FALSE;
1850
1851         // FIXME: Threads starting/stopping ?
1852         mono_loader_lock ();
1853         nthreads = mono_g_hash_table_size (thread_to_tls);
1854         mono_loader_unlock ();
1855
1856         while (TRUE) {
1857                 nwait = count_threads_to_wait_for ();
1858                 if (nwait) {
1859                         DEBUG(1, fprintf (log_file, "Waiting for %d(%d) threads to suspend...\n", nwait, nthreads));
1860                         err = MONO_SEM_WAIT (&suspend_sem);
1861                         g_assert (err == 0);
1862                         waited = TRUE;
1863                 } else {
1864                         break;
1865                 }
1866         }
1867
1868         if (waited)
1869                 DEBUG(1, fprintf (log_file, "%d threads suspended.\n", nthreads));
1870 }
1871
1872 /*
1873  * is_suspended:
1874  *
1875  *   Return whenever the runtime is suspended.
1876  */
1877 static gboolean
1878 is_suspended (void)
1879 {
1880         return count_threads_to_wait_for () == 0;
1881 }
1882
1883 /*
1884  * compute_il_offset:
1885  *
1886  *    Compute the IL offset corresponding to NATIVE_OFFSET, which should be
1887  * a location of a sequence point.
1888  * We use this function instead of mono_debug_il_offset_from_address () etc,
1889  * which doesn't seem to work in a lot of cases.
1890  */
1891 static gint32
1892 compute_il_offset (MonoDomain *domain, MonoMethod *method, gint32 native_offset)
1893 {
1894         GPtrArray *seq_points;
1895         int i, last_il_offset, seq_il_offset, seq_native_offset;
1896
1897         mono_domain_lock (domain);
1898         seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, method);
1899         mono_domain_unlock (domain);
1900         g_assert (seq_points);
1901
1902         last_il_offset = -1;
1903
1904         /* Find the sequence point */
1905         for (i = 0; i < seq_points->len; i += 2) {
1906                 seq_il_offset = GPOINTER_TO_UINT (g_ptr_array_index (seq_points, i));
1907                 seq_native_offset = GPOINTER_TO_UINT (g_ptr_array_index (seq_points, i + 1));
1908
1909                 if (seq_native_offset > native_offset)
1910                         break;
1911                 last_il_offset = seq_il_offset;
1912         }
1913
1914         return last_il_offset;
1915 }
1916
1917 typedef struct {
1918         DebuggerTlsData *tls;
1919         GSList *frames;
1920 } ComputeFramesUserData;
1921
1922 static gboolean
1923 process_frame (StackFrameInfo *info, MonoContext *ctx, gpointer user_data)
1924 {
1925         ComputeFramesUserData *ud = user_data;
1926         StackFrame *frame;
1927         MonoMethod *method;
1928
1929         if (info->type != FRAME_TYPE_MANAGED) {
1930                 if (info->type == FRAME_TYPE_DEBUGGER_INVOKE) {
1931                         /* Mark the last frame as an invoke frame */
1932                         if (ud->frames)
1933                                 ((StackFrame*)ud->frames->data)->flags |= FRAME_FLAG_DEBUGGER_INVOKE;
1934                 }
1935                 return FALSE;
1936         }
1937
1938         if (info->ji)
1939                 method = info->ji->method;
1940         else
1941                 method = info->method;
1942
1943         if (!method || (method->wrapper_type && method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD))
1944                 return FALSE;
1945
1946         if (info->il_offset == -1) {
1947                 /* Can't use compute_il_offset () since ip doesn't point precisely at at a seq point */
1948                 info->il_offset = mono_debug_il_offset_from_address (method, info->domain, info->native_offset);
1949         }
1950
1951         DEBUG (1, fprintf (stderr, "\tFrame: %s %d %d %d\n", mono_method_full_name (method, TRUE), info->native_offset, info->il_offset, info->managed));
1952
1953         if (!info->managed && method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD) {
1954                 /*
1955                  * mono_arch_find_jit_info () returns the context stored in the LMF for
1956                  * native frames, but it should unwind once. This is why we have duplicate
1957                  * frames on the stack sometimes.
1958                  * !managed also seems to be set for dynamic methods.
1959                  */
1960                 return FALSE;
1961         }
1962
1963         frame = g_new0 (StackFrame, 1);
1964         frame->method = method;
1965         frame->il_offset = info->il_offset;
1966         frame->ctx = *ctx;
1967         frame->domain = info->domain;
1968
1969         ud->frames = g_slist_append (ud->frames, frame);
1970
1971         return FALSE;
1972 }
1973
1974 static void
1975 compute_frame_info (MonoInternalThread *thread, DebuggerTlsData *tls)
1976 {
1977         ComputeFramesUserData user_data;
1978         GSList *tmp;
1979         int i, findex, new_frame_count;
1980         StackFrame **new_frames, *f;
1981
1982         // FIXME: Locking on tls
1983         if (tls->frames && tls->frames_up_to_date)
1984                 return;
1985
1986         DEBUG(1, fprintf (log_file, "Frames for %p(tid=%lx):\n", thread, (glong)thread->tid));
1987
1988         user_data.tls = tls;
1989         user_data.frames = NULL;
1990         if (tls->has_context) {
1991                 mono_jit_walk_stack_from_ctx_in_thread (process_frame, tls->domain, &tls->ctx, FALSE, thread, tls->lmf, &user_data);
1992         } else {
1993                 // FIXME:
1994                 tls->frame_count = 0;
1995                 return;
1996         }
1997
1998         new_frame_count = g_slist_length (user_data.frames);
1999         new_frames = g_new0 (StackFrame*, new_frame_count);
2000         findex = 0;
2001         for (tmp = user_data.frames; tmp; tmp = tmp->next) {
2002                 f = tmp->data;
2003
2004                 /*
2005                  * Reuse the id for already existing stack frames, so invokes don't invalidate
2006                  * the still valid stack frames.
2007                  */
2008                 for (i = 0; i < tls->frame_count; ++i) {
2009                         if (MONO_CONTEXT_GET_SP (&tls->frames [i]->ctx) == MONO_CONTEXT_GET_SP (&f->ctx)) {
2010                                 f->id = tls->frames [i]->id;
2011                                 break;
2012                         }
2013                 }
2014
2015                 if (i >= tls->frame_count)
2016                         f->id = InterlockedIncrement (&frame_id);
2017
2018                 new_frames [findex ++] = f;
2019         }
2020
2021         g_slist_free (user_data.frames);
2022
2023         invalidate_frames (tls);
2024
2025         tls->frames = new_frames;
2026         tls->frame_count = new_frame_count;
2027         tls->frames_up_to_date = TRUE;
2028 }
2029
2030 /*
2031  * EVENT HANDLING
2032  */
2033
2034 /*
2035  * create_event_list:
2036  *
2037  *   Return a list of event request ids matching EVENT, starting from REQS, which
2038  * can be NULL to include all event requests. Set SUSPEND_POLICY to the suspend
2039  * policy.
2040  * We return request ids, instead of requests, to simplify threading, since
2041  * requests could be deleted anytime when the loader lock is not held.
2042  * LOCKING: Assumes the loader lock is held.
2043  */
2044 static GSList*
2045 create_event_list (EventKind event, GPtrArray *reqs, MonoJitInfo *ji, MonoException *exc, int *suspend_policy)
2046 {
2047         int i, j;
2048         GSList *events = NULL;
2049
2050         *suspend_policy = SUSPEND_POLICY_NONE;
2051
2052         if (!reqs)
2053                 reqs = event_requests;
2054
2055         if (!reqs)
2056                 return NULL;
2057
2058         for (i = 0; i < reqs->len; ++i) {
2059                 EventRequest *req = g_ptr_array_index (reqs, i);
2060                 if (req->event_kind == event) {
2061                         gboolean filtered = FALSE;
2062
2063                         /* Apply filters */
2064                         for (j = 0; j < req->nmodifiers; ++j) {
2065                                 Modifier *mod = &req->modifiers [j];
2066
2067                                 if (mod->kind == MOD_KIND_COUNT) {
2068                                         filtered = TRUE;
2069                                         if (mod->data.count > 0) {
2070                                                 if (mod->data.count > 0) {
2071                                                         mod->data.count --;
2072                                                         if (mod->data.count == 0)
2073                                                                 filtered = FALSE;
2074                                                 }
2075                                         }
2076                                 } else if (mod->kind == MOD_KIND_THREAD_ONLY) {
2077                                         if (mod->data.thread != mono_thread_internal_current ())
2078                                                 filtered = TRUE;
2079                                 } else if (mod->kind == MOD_KIND_EXCEPTION_ONLY && exc) {
2080                                         if (mod->data.exc_class && !mono_class_is_assignable_from (mod->data.exc_class, exc->object.vtable->klass))
2081                                                 filtered = TRUE;
2082                                 } else if (mod->kind == MOD_KIND_ASSEMBLY_ONLY && ji) {
2083                                         int k;
2084                                         gboolean found = FALSE;
2085                                         MonoAssembly **assemblies = mod->data.assemblies;
2086
2087                                         for (k = 0; assemblies [k]; ++k)
2088                                                 if (assemblies [k] == ji->method->klass->image->assembly)
2089                                                         found = TRUE;
2090                                         if (!found)
2091                                                 filtered = TRUE;
2092                                 }
2093                         }
2094
2095                         if (!filtered) {
2096                                 *suspend_policy = MAX (*suspend_policy, req->suspend_policy);
2097                                 events = g_slist_append (events, GINT_TO_POINTER (req->id));
2098                         }
2099                 }
2100         }
2101
2102         /* Send a VM START/DEATH event by default */
2103         if (event == EVENT_KIND_VM_START)
2104                 events = g_slist_append (events, GINT_TO_POINTER (0));
2105         if (event == EVENT_KIND_VM_DEATH)
2106                 events = g_slist_append (events, GINT_TO_POINTER (0));
2107
2108         return events;
2109 }
2110
2111 static G_GNUC_UNUSED const char*
2112 event_to_string (EventKind event)
2113 {
2114         switch (event) {
2115         case EVENT_KIND_VM_START: return "VM_START";
2116         case EVENT_KIND_VM_DEATH: return "VM_DEATH";
2117         case EVENT_KIND_THREAD_START: return "THREAD_START";
2118         case EVENT_KIND_THREAD_DEATH: return "THREAD_DEATH";
2119         case EVENT_KIND_APPDOMAIN_CREATE: return "APPDOMAIN_CREATE";
2120         case EVENT_KIND_APPDOMAIN_UNLOAD: return "APPDOMAIN_UNLOAD";
2121         case EVENT_KIND_METHOD_ENTRY: return "METHOD_ENTRY";
2122         case EVENT_KIND_METHOD_EXIT: return "METHOD_EXIT";
2123         case EVENT_KIND_ASSEMBLY_LOAD: return "ASSEMBLY_LOAD";
2124         case EVENT_KIND_ASSEMBLY_UNLOAD: return "ASSEMBLY_UNLOAD";
2125         case EVENT_KIND_BREAKPOINT: return "BREAKPOINT";
2126         case EVENT_KIND_STEP: return "STEP";
2127         case EVENT_KIND_TYPE_LOAD: return "TYPE_LOAD";
2128         case EVENT_KIND_EXCEPTION: return "EXCEPTION";
2129         default:
2130                 g_assert_not_reached ();
2131         }
2132 }
2133
2134 /*
2135  * process_event:
2136  *
2137  *   Send an event to the client, suspending the vm if needed.
2138  * LOCKING: Since this can suspend the calling thread, no locks should be held
2139  * by the caller.
2140  * The EVENTS list is freed by this function.
2141  */
2142 static void
2143 process_event (EventKind event, gpointer arg, gint32 il_offset, MonoContext *ctx, GSList *events, int suspend_policy)
2144 {
2145         Buffer buf;
2146         GSList *l;
2147         MonoDomain *domain = mono_domain_get ();
2148         MonoThread *thread;
2149
2150         if (!inited)
2151                 return;
2152
2153         if (!vm_start_event_sent && event != EVENT_KIND_VM_START)
2154                 // FIXME: We miss those events
2155                 return;
2156
2157         if (vm_death_event_sent)
2158                 return;
2159
2160         if (mono_runtime_is_shutting_down () && event != EVENT_KIND_VM_DEATH)
2161                 return;
2162
2163         if (disconnected)
2164                 return;
2165
2166         if (events == NULL)
2167                 return;
2168
2169         if (debugger_thread_id == GetCurrentThreadId () && event != EVENT_KIND_VM_DEATH)
2170                 // FIXME: Send these with a NULL thread, don't suspend the current thread
2171                 return;
2172
2173         buffer_init (&buf, 128);
2174         buffer_add_byte (&buf, suspend_policy);
2175         buffer_add_int (&buf, g_slist_length (events)); // n of events
2176
2177         for (l = events; l; l = l->next) {
2178                 buffer_add_byte (&buf, event); // event kind
2179                 buffer_add_int (&buf, GPOINTER_TO_INT (l->data)); // request id
2180
2181                 thread = mono_thread_current ();
2182
2183                 if (event == EVENT_KIND_VM_START)
2184                         thread = arg;
2185                 else if (event == EVENT_KIND_THREAD_START)
2186                         g_assert (mono_thread_internal_current () == arg);
2187
2188                 buffer_add_objid (&buf, (MonoObject*)thread); // thread
2189
2190                 switch (event) {
2191                 case EVENT_KIND_THREAD_START:
2192                 case EVENT_KIND_THREAD_DEATH:
2193                         break;
2194                 case EVENT_KIND_APPDOMAIN_CREATE:
2195                 case EVENT_KIND_APPDOMAIN_UNLOAD:
2196                         buffer_add_domainid (&buf, arg);
2197                         break;
2198                 case EVENT_KIND_METHOD_ENTRY:
2199                 case EVENT_KIND_METHOD_EXIT:
2200                         buffer_add_methodid (&buf, domain, arg);
2201                         break;
2202                 case EVENT_KIND_ASSEMBLY_LOAD:
2203                 case EVENT_KIND_ASSEMBLY_UNLOAD:
2204                         buffer_add_assemblyid (&buf, domain, arg);
2205                         break;
2206                 case EVENT_KIND_TYPE_LOAD:
2207                         buffer_add_typeid (&buf, domain, arg);
2208                         break;
2209                 case EVENT_KIND_BREAKPOINT:
2210                 case EVENT_KIND_STEP:
2211                         buffer_add_methodid (&buf, domain, arg);
2212                         buffer_add_long (&buf, il_offset);
2213                         break;
2214                 case EVENT_KIND_VM_START:
2215                         buffer_add_domainid (&buf, mono_get_root_domain ());
2216                         break;
2217                 case EVENT_KIND_VM_DEATH:
2218                         break;
2219                 case EVENT_KIND_EXCEPTION:
2220                         buffer_add_objid (&buf, (MonoObject*)arg);
2221                         break;
2222                 default:
2223                         g_assert_not_reached ();
2224                 }
2225         }
2226
2227         if (event == EVENT_KIND_VM_START) {
2228                 suspend_policy = agent_config.suspend ? SUSPEND_POLICY_ALL : SUSPEND_POLICY_NONE;
2229                 start_debugger_thread ();
2230         }
2231
2232         if (event == EVENT_KIND_VM_DEATH) {
2233                 vm_death_event_sent = TRUE;
2234
2235                 suspend_policy = SUSPEND_POLICY_NONE;
2236         }
2237
2238         if (mono_runtime_is_shutting_down ())
2239                 suspend_policy = SUSPEND_POLICY_NONE;
2240
2241         if (suspend_policy != SUSPEND_POLICY_NONE) {
2242                 /*
2243                  * Save the thread context and start suspending before sending the packet,
2244                  * since we could be receiving the resume request before send_packet ()
2245                  * returns.
2246                  */
2247                 save_thread_context (ctx);
2248                 suspend_vm ();
2249         }
2250
2251         send_packet (CMD_SET_EVENT, CMD_COMPOSITE, &buf);
2252
2253         g_slist_free (events);
2254         events = NULL;
2255
2256         if (event == EVENT_KIND_VM_START)
2257                 vm_start_event_sent = TRUE;
2258
2259         DEBUG (1, fprintf (log_file, "[%p] Sent event %s, suspend=%d.\n", (gpointer)GetCurrentThreadId (), event_to_string (event), suspend_policy));
2260
2261         buffer_free (&buf);
2262
2263         switch (suspend_policy) {
2264         case SUSPEND_POLICY_NONE:
2265                 break;
2266         case SUSPEND_POLICY_ALL:
2267                 suspend_current ();
2268                 break;
2269         case SUSPEND_POLICY_EVENT_THREAD:
2270                 NOT_IMPLEMENTED;
2271                 break;
2272         default:
2273                 g_assert_not_reached ();
2274         }
2275 }
2276
2277 static void
2278 process_profiler_event (EventKind event, gpointer arg)
2279 {
2280         int suspend_policy;
2281         GSList *events;
2282
2283         mono_loader_lock ();
2284         events = create_event_list (event, NULL, NULL, NULL, &suspend_policy);
2285         mono_loader_unlock ();
2286
2287         process_event (event, arg, 0, NULL, events, suspend_policy);
2288 }
2289
2290 static void
2291 runtime_initialized (MonoProfiler *prof)
2292 {
2293         process_profiler_event (EVENT_KIND_VM_START, mono_thread_current ());
2294 }
2295
2296 static void
2297 runtime_shutdown (MonoProfiler *prof)
2298 {
2299         process_profiler_event (EVENT_KIND_VM_DEATH, mono_thread_current ());
2300
2301         mono_debugger_agent_cleanup ();
2302 }
2303
2304 static void
2305 thread_startup (MonoProfiler *prof, gsize tid)
2306 {
2307         MonoInternalThread *thread = mono_thread_internal_current ();
2308         MonoInternalThread *old_thread;
2309         DebuggerTlsData *tls;
2310
2311         if (tid == debugger_thread_id)
2312                 return;
2313
2314         g_assert (thread->tid == tid);
2315
2316         mono_loader_lock ();
2317         old_thread = mono_g_hash_table_lookup (tid_to_thread, (gpointer)tid);
2318         mono_loader_unlock ();
2319         if (old_thread) {
2320                 if (thread == old_thread) {
2321                         /*
2322                          * For some reason, thread_startup () might be called for the same thread
2323                          * multiple times (attach ?).
2324                          */
2325                         DEBUG (1, fprintf (log_file, "[%p] thread_start () called multiple times for %p, ignored.\n", (gpointer)tid, (gpointer)tid));
2326                         return;
2327                 } else {
2328                         /*
2329                          * thread_end () might not be called for some threads, and the tid could
2330                          * get reused.
2331                          */
2332                         DEBUG (1, fprintf (log_file, "[%p] Removing stale data for tid %p.\n", (gpointer)tid, (gpointer)tid));
2333                         mono_loader_lock ();
2334                         mono_g_hash_table_remove (thread_to_tls, old_thread);
2335                         mono_g_hash_table_remove (tid_to_thread, (gpointer)tid);
2336                         mono_g_hash_table_remove (tid_to_thread_obj, (gpointer)tid);
2337                         mono_loader_unlock ();
2338                 }
2339         }
2340
2341         tls = TlsGetValue (debugger_tls_id);
2342         g_assert (!tls);
2343         // FIXME: Free this somewhere
2344         tls = g_new0 (DebuggerTlsData, 1);
2345         tls->resume_event = CreateEvent (NULL, FALSE, FALSE, NULL);
2346         TlsSetValue (debugger_tls_id, tls);
2347
2348         DEBUG (1, fprintf (log_file, "[%p] Thread started, obj=%p, tls=%p.\n", (gpointer)tid, thread, tls));
2349
2350         mono_loader_lock ();
2351         mono_g_hash_table_insert (thread_to_tls, thread, tls);
2352         mono_g_hash_table_insert (tid_to_thread, (gpointer)tid, thread);
2353         mono_g_hash_table_insert (tid_to_thread_obj, (gpointer)tid, mono_thread_current ());
2354         mono_loader_unlock ();
2355
2356         process_profiler_event (EVENT_KIND_THREAD_START, thread);
2357
2358         /*
2359          * suspend_vm () could have missed this thread, so wait for a resume.
2360          */
2361         suspend_current ();
2362 }
2363
2364 static void
2365 thread_end (MonoProfiler *prof, gsize tid)
2366 {
2367         MonoInternalThread *thread;
2368         DebuggerTlsData *tls = NULL;
2369
2370         mono_loader_lock ();
2371         thread = mono_g_hash_table_lookup (tid_to_thread, (gpointer)tid);
2372         if (thread) {
2373                 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
2374                 /* FIXME: Maybe we need to free this instead, but some code can't handle that */
2375                 tls->terminated = TRUE;
2376                 mono_g_hash_table_remove (tid_to_thread_obj, (gpointer)tid);
2377                 /* Can't remove from tid_to_thread, as that would defeat the check in thread_start () */
2378         }
2379         mono_loader_unlock ();
2380
2381         /* We might be called for threads started before we registered the start callback */
2382         if (thread) {
2383                 DEBUG (1, fprintf (log_file, "[%p] Thread terminated, obj=%p, tls=%p.\n", (gpointer)tid, thread, tls));
2384                 process_profiler_event (EVENT_KIND_THREAD_DEATH, thread);
2385         }
2386 }
2387
2388 static void
2389 appdomain_load (MonoProfiler *prof, MonoDomain *domain, int result)
2390 {
2391         process_profiler_event (EVENT_KIND_APPDOMAIN_CREATE, domain);
2392 }
2393
2394 static void
2395 appdomain_unload (MonoProfiler *prof, MonoDomain *domain)
2396 {
2397         process_profiler_event (EVENT_KIND_APPDOMAIN_UNLOAD, domain);
2398 }
2399
2400 static void
2401 assembly_load (MonoProfiler *prof, MonoAssembly *assembly, int result)
2402 {
2403         /* Sent later in jit_end () */
2404         mono_loader_lock ();
2405         g_ptr_array_add (pending_assembly_loads, assembly);
2406         mono_loader_unlock ();
2407 }
2408
2409 static void
2410 assembly_unload (MonoProfiler *prof, MonoAssembly *assembly)
2411 {
2412         process_profiler_event (EVENT_KIND_ASSEMBLY_UNLOAD, assembly);
2413 }
2414
2415 static void
2416 start_runtime_invoke (MonoProfiler *prof, MonoMethod *method)
2417 {
2418 }
2419
2420 static void
2421 end_runtime_invoke (MonoProfiler *prof, MonoMethod *method)
2422 {
2423         int i;
2424 #ifdef PLATFORM_WIN32
2425         gpointer stackptr = ((guint64)_AddressOfReturnAddress () - sizeof (void*));
2426 #else
2427         gpointer stackptr = __builtin_frame_address (0);
2428 #endif
2429
2430         if (ss_req == NULL || ss_req->start_sp > stackptr || ss_req->thread != mono_thread_internal_current ())
2431                 return;
2432
2433         /*
2434          * We need to stop single stepping when exiting a runtime invoke, since if it is
2435          * a step out, it may return to native code, and thus never end.
2436          */
2437         mono_loader_lock ();
2438         for (i = 0; i < event_requests->len; ++i) {
2439                 EventRequest *req = g_ptr_array_index (event_requests, i);
2440
2441                 if (req->event_kind == EVENT_KIND_STEP) {
2442                         ss_stop (req);
2443                         g_ptr_array_remove_index_fast (event_requests, i);
2444                         g_free (req);
2445                         break;
2446                 }
2447         }
2448         mono_loader_unlock ();
2449
2450 }
2451
2452 static void
2453 jit_end (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *jinfo, int result)
2454 {
2455         /*
2456          * We emit type load events when the first method of the type is JITted,
2457          * since the class load profiler callbacks might be called with the
2458          * loader lock held. They could also occur in the debugger thread.
2459          * Same for assembly load events.
2460          */
2461         gboolean type_load = FALSE;
2462
2463         while (TRUE) {
2464                 MonoAssembly *assembly = NULL;
2465
2466                 // FIXME: Maybe store this in TLS so the thread of the event is correct ?
2467                 mono_loader_lock ();
2468                 if (pending_assembly_loads->len > 0) {
2469                         assembly = g_ptr_array_index (pending_assembly_loads, 0);
2470                         g_ptr_array_remove_index (pending_assembly_loads, 0);
2471                 }
2472                 mono_loader_unlock ();
2473
2474                 if (assembly)
2475                         process_profiler_event (EVENT_KIND_ASSEMBLY_LOAD, assembly);
2476                 else
2477                         break;
2478         }
2479
2480         mono_loader_lock ();
2481         if (!g_hash_table_lookup (loaded_classes, method->klass)) {
2482                 type_load = TRUE;
2483                 g_hash_table_insert (loaded_classes, method->klass, method->klass);
2484         }
2485         mono_loader_unlock ();
2486         if (type_load)
2487                 process_profiler_event (EVENT_KIND_TYPE_LOAD, method->klass);
2488
2489         if (!result)
2490                 add_pending_breakpoints (method, jinfo);
2491 }
2492
2493 /*
2494  * BREAKPOINTS/SINGLE STEPPING
2495  */
2496
2497 /*
2498  * Contains information about an inserted breakpoint.
2499  */
2500 typedef struct {
2501         long il_offset, native_offset;
2502         guint8 *ip;
2503         gboolean pending, entry;
2504         MonoJitInfo *ji;
2505 } BreakpointInstance;
2506
2507 /*
2508  * Contains generic information about a breakpoint.
2509  */
2510 typedef struct {
2511         /*
2512          * The method where the breakpoint is placed. Can be NULL in which case it
2513          * is inserted into every method. This is used to implement method entry/
2514          * exit events. Can be a generic method definition, in which case the
2515          * breakpoint is inserted into every instance.
2516          */
2517         MonoMethod *method;
2518         long il_offset;
2519         gboolean pending, entry;
2520         EventRequest *req;
2521         /*
2522          * A list of BreakpointInstance structures describing where the breakpoint
2523          * was inserted. There could be more than one because of
2524          * generics/appdomains/method entry/exit.
2525          */
2526         GPtrArray *children;
2527 } MonoBreakpoint;
2528
2529 /* List of breakpoints */
2530 static GPtrArray *breakpoints;
2531 /* Maps breakpoint locations to the number of breakpoints at that location */
2532 static GHashTable *bp_locs;
2533
2534 static void
2535 breakpoints_init (void)
2536 {
2537         breakpoints = g_ptr_array_new ();
2538         bp_locs = g_hash_table_new (NULL, NULL);
2539 }
2540
2541 static void
2542 breakpoints_cleanup (void)
2543 {
2544         int i;
2545
2546         mono_loader_lock ();
2547
2548         for (i = 0; i < breakpoints->len; ++i)
2549                 g_free (g_ptr_array_index (breakpoints, i));
2550
2551         g_ptr_array_free (breakpoints, TRUE);
2552         g_hash_table_destroy (bp_locs);
2553
2554         mono_loader_unlock ();
2555 }
2556
2557 /*
2558  * insert_breakpoint:
2559  *
2560  *   Insert the breakpoint described by BP into the method described by
2561  * JI.
2562  */
2563 static void
2564 insert_breakpoint (GPtrArray *seq_points, MonoJitInfo *ji, MonoBreakpoint *bp)
2565 {
2566         int i, count;
2567         gint32 il_offset, native_offset;
2568         BreakpointInstance *inst;
2569
2570         native_offset = 0;
2571         for (i = 0; i < seq_points->len; i += 2) {
2572                 il_offset = GPOINTER_TO_INT (g_ptr_array_index (seq_points, i));
2573                 native_offset = GPOINTER_TO_INT (g_ptr_array_index (seq_points, i + 1));
2574
2575                 if (il_offset == bp->il_offset)
2576                         break;
2577         }
2578
2579         if (i == seq_points->len)
2580                 /* Have to handle this somehow */
2581                 NOT_IMPLEMENTED;
2582
2583         inst = g_new0 (BreakpointInstance, 1);
2584         inst->native_offset = native_offset;
2585         inst->ip = (guint8*)ji->code_start + native_offset;
2586         inst->ji = ji;
2587
2588         mono_loader_lock ();
2589
2590         g_ptr_array_add (bp->children, inst);
2591
2592         count = GPOINTER_TO_INT (g_hash_table_lookup (bp_locs, inst->ip));
2593         g_hash_table_insert (bp_locs, inst->ip, GINT_TO_POINTER (count + 1));
2594         mono_loader_unlock ();
2595
2596         if (count == 0) {
2597 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
2598                 mono_arch_set_breakpoint (ji, inst->ip);
2599 #else
2600                 NOT_IMPLEMENTED;
2601 #endif
2602         }
2603 }
2604
2605 static void
2606 remove_breakpoint (BreakpointInstance *inst)
2607 {
2608 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
2609         int count;
2610         MonoJitInfo *ji = inst->ji;
2611         guint8 *ip = inst->ip;
2612
2613         mono_loader_lock ();
2614         count = GPOINTER_TO_INT (g_hash_table_lookup (bp_locs, ip));
2615         g_hash_table_insert (bp_locs, ip, GINT_TO_POINTER (count - 1));
2616         mono_loader_unlock ();
2617
2618         g_assert (count > 0);
2619
2620         if (count == 1) {
2621                 mono_arch_clear_breakpoint (ji, ip);
2622         }
2623 #else
2624         NOT_IMPLEMENTED;
2625 #endif
2626 }
2627
2628 /*
2629  * add_pending_breakpoints:
2630  *
2631  *   Insert pending breakpoints into the newly JITted method METHOD.
2632  */
2633 static void
2634 add_pending_breakpoints (MonoMethod *method, MonoJitInfo *ji)
2635 {
2636         int i;
2637         GPtrArray *seq_points;
2638         MonoDomain *domain;
2639
2640         if (!breakpoints)
2641                 return;
2642
2643         domain = mono_domain_get ();
2644
2645         mono_loader_lock ();
2646
2647         for (i = 0; i < breakpoints->len; ++i) {
2648                 MonoBreakpoint *bp = g_ptr_array_index (breakpoints, i);
2649
2650                 if (bp->pending && (bp->method == method || !bp->method || (method->is_inflated && ((MonoMethodInflated*)method)->declaring == bp->method))) {
2651                         mono_domain_lock (domain);
2652                         seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, ji->method);
2653                         mono_domain_unlock (domain);
2654                         if (!seq_points)
2655                                 /* Could be AOT code */
2656                                 continue;
2657                         g_assert (seq_points);
2658
2659                         insert_breakpoint (seq_points, ji, bp);
2660                 }
2661         }
2662
2663         mono_loader_unlock ();
2664 }
2665
2666 static void
2667 set_bp_in_method (MonoDomain *domain, MonoMethod *method, GPtrArray *seq_points, MonoBreakpoint *bp)
2668 {
2669         gpointer code;
2670         MonoJitInfo *ji;
2671
2672         code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
2673         if (!code) {
2674                 /* Might be AOTed code */
2675                 code = mono_aot_get_method (domain, method);
2676                 g_assert (code);
2677                 ji = mono_jit_info_table_find (domain, code);
2678                 g_assert (ji);
2679         }
2680         g_assert (code);
2681
2682         insert_breakpoint (seq_points, ji, bp);
2683 }
2684
2685 static void
2686 set_bp_in_method_cb (gpointer key, gpointer value, gpointer user_data)
2687 {
2688         MonoMethod *method = key;
2689         GPtrArray *seq_points = value;
2690         MonoBreakpoint *bp = user_data;
2691         MonoDomain *domain = mono_domain_get ();
2692
2693         if (bp->method) {
2694                 if (method->is_inflated && ((MonoMethodInflated*)method)->declaring == bp->method) {
2695                         /* Generic instance */
2696                         set_bp_in_method (domain, method, seq_points, bp);
2697                 }
2698         } else {
2699                 /* Method entry/exit */
2700                 set_bp_in_method (domain, method, seq_points, bp);
2701         }
2702 }
2703
2704 /*
2705  * set_breakpoint:
2706  *
2707  *   Set a breakpoint at IL_OFFSET in METHOD.
2708  * METHOD can be NULL, in which case a breakpoint is placed in all methods.
2709  * METHOD can also be a generic method definition, in which case a breakpoint
2710  * is placed in all instances of the method.
2711  */
2712 static MonoBreakpoint*
2713 set_breakpoint (MonoMethod *method, long il_offset, EventRequest *req)
2714 {
2715         GPtrArray *seq_points;
2716         MonoDomain *domain;
2717         MonoBreakpoint *bp;
2718
2719         // FIXME:
2720         // - suspend/resume the vm to prevent code patching problems
2721         // - appdomains
2722         // - multiple breakpoints on the same location
2723         // - dynamic methods
2724         // - races
2725
2726         bp = g_new0 (MonoBreakpoint, 1);
2727         bp->method = method;
2728         bp->il_offset = il_offset;
2729         bp->req = req;
2730         bp->children = g_ptr_array_new ();
2731
2732         DEBUG(1, fprintf (log_file, "[dbg] Setting breakpoint at %s:0x%x.\n", mono_method_full_name (method, TRUE), (int)il_offset));
2733
2734         domain = mono_domain_get ();
2735         mono_domain_lock (domain);
2736         if (method) {
2737                 seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, method);
2738                 if (seq_points) {
2739                         set_bp_in_method (domain, method, seq_points, bp);
2740                 } else {
2741                         if (method->is_generic)
2742                                 /* There might be already JITted instances */
2743                                 g_hash_table_foreach (domain_jit_info (domain)->seq_points, set_bp_in_method_cb, bp);
2744
2745                         /* Not yet JITted */
2746                         bp->pending = TRUE;
2747                 }
2748         } else {
2749                 g_hash_table_foreach (domain_jit_info (domain)->seq_points, set_bp_in_method_cb, bp);
2750                 bp->pending = TRUE;
2751         }
2752         mono_domain_unlock (domain);
2753
2754         mono_loader_lock ();
2755         g_ptr_array_add (breakpoints, bp);
2756         mono_loader_unlock ();
2757
2758         return bp;
2759 }
2760
2761 static void
2762 clear_breakpoint (MonoBreakpoint *bp)
2763 {
2764         int i;
2765
2766         // FIXME: locking, races
2767         for (i = 0; i < bp->children->len; ++i) {
2768                 BreakpointInstance *inst = g_ptr_array_index (bp->children, i);
2769
2770                 remove_breakpoint (inst);
2771
2772                 g_free (inst);
2773         }
2774
2775         mono_loader_lock ();
2776         g_ptr_array_remove (breakpoints, bp);
2777         mono_loader_unlock ();
2778
2779         g_ptr_array_free (bp->children, TRUE);
2780         g_free (bp);
2781 }
2782
2783 static void
2784 process_breakpoint_inner (MonoContext *ctx)
2785 {
2786         MonoJitInfo *ji;
2787         guint8 *orig_ip, *ip;
2788         int i, j, suspend_policy;
2789         guint32 native_offset;
2790         MonoBreakpoint *bp;
2791         BreakpointInstance *inst;
2792         GPtrArray *reqs;
2793         GSList *events = NULL;
2794         EventKind kind = EVENT_KIND_BREAKPOINT;
2795
2796         // FIXME: Speed this up
2797
2798         orig_ip = ip = MONO_CONTEXT_GET_IP (ctx);
2799         ji = mono_jit_info_table_find (mono_domain_get (), (char*)ip);
2800         g_assert (ji);
2801         g_assert (ji->method);
2802
2803         /* Compute the native offset of the breakpoint from the ip */
2804 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
2805         ip = mono_arch_get_ip_for_breakpoint (ji, ctx);
2806         native_offset = ip - (guint8*)ji->code_start;
2807 #else
2808         NOT_IMPLEMENTED;
2809 #endif
2810
2811         /*
2812          * Skip the instruction causing the breakpoint signal.
2813          */
2814         mono_arch_skip_breakpoint (ctx);
2815
2816         if (ji->method->wrapper_type)
2817                 return;
2818
2819         reqs = g_ptr_array_new ();
2820
2821         DEBUG(1, fprintf (log_file, "[%p] Breakpoint hit, method=%s, offset=0x%x.\n", (gpointer)GetCurrentThreadId (), ji->method->name, native_offset));
2822
2823         mono_loader_lock ();
2824
2825         bp = NULL;
2826         for (i = 0; i < breakpoints->len; ++i) {
2827                 bp = g_ptr_array_index (breakpoints, i);
2828
2829                 if (!bp->method)
2830                         continue;
2831
2832                 for (j = 0; j < bp->children->len; ++j) {
2833                         inst = g_ptr_array_index (bp->children, j);
2834                         if (inst->ji == ji && inst->native_offset == native_offset)
2835                                 g_ptr_array_add (reqs, bp->req);
2836                 }
2837         }
2838         if (reqs->len == 0) {
2839                 GPtrArray *seq_points;
2840                 int seq_il_offset, seq_native_offset;
2841                 MonoDomain *domain = mono_domain_get ();
2842
2843                 /* Maybe a method entry/exit event */
2844                 mono_domain_lock (domain);
2845                 seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, ji->method);
2846                 mono_domain_unlock (domain);
2847                 if (!seq_points) {
2848                         // FIXME: Generic sharing */
2849                         mono_loader_unlock ();
2850                         return;
2851                 }
2852                 g_assert (seq_points);
2853
2854                 for (i = 0; i < seq_points->len; i += 2) {
2855                         seq_il_offset = GPOINTER_TO_INT (g_ptr_array_index (seq_points, i));
2856                         seq_native_offset = GPOINTER_TO_INT (g_ptr_array_index (seq_points, i + 1));
2857
2858                         if (native_offset == seq_native_offset) {
2859                                 if (seq_il_offset == METHOD_ENTRY_IL_OFFSET)
2860                                         kind = EVENT_KIND_METHOD_ENTRY;
2861                                 else if (seq_il_offset == METHOD_EXIT_IL_OFFSET)
2862                                         kind = EVENT_KIND_METHOD_EXIT;
2863                                 break;
2864                         }
2865                 }
2866         }
2867
2868         if (reqs->len > 0)
2869                 events = create_event_list (EVENT_KIND_BREAKPOINT, reqs, ji, NULL, &suspend_policy);
2870         else if (kind != EVENT_KIND_BREAKPOINT)
2871                 events = create_event_list (kind, NULL, ji, NULL, &suspend_policy);
2872
2873         g_ptr_array_free (reqs, TRUE);
2874
2875         mono_loader_unlock ();
2876
2877         if (events)
2878                 process_event (kind, ji->method, 0, ctx, events, suspend_policy);
2879 }
2880
2881 static void
2882 process_breakpoint (void)
2883 {
2884         DebuggerTlsData *tls;
2885         MonoContext ctx;
2886         static void (*restore_context) (void *);
2887
2888         if (!restore_context)
2889                 restore_context = mono_get_restore_context ();
2890
2891         tls = TlsGetValue (debugger_tls_id);
2892         memcpy (&ctx, &tls->handler_ctx, sizeof (MonoContext));
2893
2894         process_breakpoint_inner (&ctx);
2895
2896         /* This is called when resuming from a signal handler, so it shouldn't return */
2897         restore_context (&ctx);
2898         g_assert_not_reached ();
2899 }
2900
2901 static void
2902 resume_from_signal_handler (void *sigctx, void *func)
2903 {
2904         DebuggerTlsData *tls;
2905         MonoContext ctx;
2906
2907         /* Save the original context in TLS */
2908         // FIXME: This might not work on an altstack ?
2909         tls = TlsGetValue (debugger_tls_id);
2910         g_assert (tls);
2911
2912         // FIXME: MonoContext usually doesn't include the fp registers, so these are
2913         // clobbered by a single step/breakpoint event. If this turns out to be a problem,
2914         // clob:c could be added to op_seq_point.
2915
2916         mono_arch_sigctx_to_monoctx (sigctx, &ctx);
2917         memcpy (&tls->handler_ctx, &ctx, sizeof (MonoContext));
2918         MONO_CONTEXT_SET_IP (&ctx, func);
2919
2920         mono_arch_monoctx_to_sigctx (&ctx, sigctx);
2921 }
2922
2923 void
2924 mono_debugger_agent_breakpoint_hit (void *sigctx)
2925 {
2926         /*
2927          * We are called from a signal handler, and running code there causes all kinds of
2928          * problems, like the original signal is disabled, libgc can't handle altstack, etc.
2929          * So set up the signal context to return to the real breakpoint handler function.
2930          */
2931
2932         resume_from_signal_handler (sigctx, process_breakpoint);
2933 }
2934
2935 static void
2936 process_single_step_inner (MonoContext *ctx)
2937 {
2938         MonoJitInfo *ji;
2939         guint8 *ip;
2940         GPtrArray *reqs;
2941         int il_offset, suspend_policy;
2942         MonoDomain *domain = mono_domain_get ();
2943         GSList *events;
2944
2945         // FIXME: Speed this up
2946
2947         ip = MONO_CONTEXT_GET_IP (ctx);
2948
2949         /* Skip the instruction causing the single step */
2950         mono_arch_skip_single_step (ctx);
2951
2952         if (suspend_count > 0) {
2953                 if (debugger_thread_id == GetCurrentThreadId ())
2954                         return;
2955
2956                 DEBUG(1, fprintf (log_file, "[%p] Received single step event for suspending.\n", (gpointer)GetCurrentThreadId ()));
2957
2958                 ji = mono_jit_info_table_find (mono_domain_get (), (char*)ip);
2959
2960                 /* See the comment below */
2961                 if (ji->method->klass == mono_defaults.string_class && (!strcmp (ji->method->name, "memset") || strstr (ji->method->name, "memcpy")))
2962                         return;
2963
2964                 save_thread_context (ctx);
2965                 suspend_current ();
2966                 return;
2967         }
2968
2969         if (!ss_req)
2970                 // FIXME: A suspend race
2971                 return;
2972
2973         if (mono_thread_internal_current () != ss_req->thread)
2974                 return;
2975
2976         if (log_level > 0) {
2977                 const char *depth = NULL;
2978
2979                 ji = mono_jit_info_table_find (mono_domain_get (), (char*)ip);
2980
2981                 switch (ss_req->depth) {
2982                 case STEP_DEPTH_OVER:
2983                         depth = "over";
2984                         break;
2985                 case STEP_DEPTH_OUT:
2986                         depth = "out";
2987                         break;
2988                 case STEP_DEPTH_INTO:
2989                         depth = "into";
2990                         break;
2991                 default:
2992                         g_assert_not_reached ();
2993                 }
2994
2995                 DEBUG (1, fprintf (log_file, "[%p] Single step event (depth=%s) at %s (%p), sp %p, last sp %p\n", (gpointer)GetCurrentThreadId (), ss_req->depth == STEP_DEPTH_OVER ? "over" : "out", mono_method_full_name (ji->method, TRUE), MONO_CONTEXT_GET_IP (ctx), MONO_CONTEXT_GET_SP (ctx), ss_req->last_sp));
2996         }
2997
2998         /*
2999          * We implement step over/out by single stepping until we reach the same
3000          * frame/parent frame.
3001          * FIXME:
3002          * - this is slow
3003          * - stack growing upward
3004          * - localloc
3005          * - exceptions
3006          */
3007         if (ss_req->depth != STEP_DEPTH_INTO) {
3008                 if (ss_req->depth == STEP_DEPTH_OVER && MONO_CONTEXT_GET_SP (ctx) < ss_req->last_sp)
3009                         return;
3010                 if (ss_req->depth == STEP_DEPTH_OUT && MONO_CONTEXT_GET_SP (ctx) <= ss_req->last_sp)
3011                         return;
3012
3013                 ss_req->last_sp = MONO_CONTEXT_GET_SP (ctx);
3014         }
3015
3016         ji = mono_jit_info_table_find (mono_domain_get (), (char*)ip);
3017         g_assert (ji);
3018         g_assert (ji->method);
3019
3020         if (ji->method->wrapper_type && ji->method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
3021                 return;
3022
3023         /*
3024          * FIXME:
3025          * Stopping in memset makes half-initialized vtypes visible.
3026          * Stopping in memcpy makes half-copied vtypes visible.
3027          */
3028         if (ji->method->klass == mono_defaults.string_class && (!strcmp (ji->method->name, "memset") || strstr (ji->method->name, "memcpy")))
3029                 return;
3030
3031         /*
3032          * The ip points to the instruction causing the single step event, convert it
3033          * to the offset stored in seq_points.
3034          */
3035 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
3036         ip = mono_arch_get_ip_for_single_step (ji, ctx);
3037 #else
3038         g_assert_not_reached ();
3039 #endif
3040
3041         /*
3042          * mono_debug_lookup_source_location () doesn't work for IL offset 0 for
3043          * example, so do things by hand.
3044          */
3045         il_offset = compute_il_offset (domain, ji->method, (guint8*)ip - (guint8*)ji->code_start);
3046
3047         if (il_offset == -1)
3048                 return;
3049
3050         if (ss_req->size == STEP_SIZE_LINE) {
3051                 /* Step until a different source line is reached */
3052                 MonoDebugMethodInfo *minfo;
3053
3054                 minfo = mono_debug_lookup_method (ji->method);
3055
3056                 if (minfo) {
3057                         MonoDebugSourceLocation *loc = mono_debug_symfile_lookup_location (minfo, il_offset);
3058
3059                         if (loc && ji->method == ss_req->last_method && loc->row == ss_req->last_line) {
3060                                 mono_debug_free_source_location (loc);
3061                                 return;
3062                         }
3063                         if (!loc)
3064                                 /*
3065                                  * Step until we reach a location with line number info,
3066                                  * otherwise the client can't show a location.
3067                                  * This can happen for example with statics initialized inline
3068                                  * outside of a cctor.
3069                                  */
3070                                 return;
3071
3072                         if (loc) {
3073                                 ss_req->last_method = ji->method;
3074                                 ss_req->last_line = loc->row;
3075                                 mono_debug_free_source_location (loc);
3076                         }
3077                 }
3078         }
3079
3080         // FIXME: Has to lock earlier
3081
3082         reqs = g_ptr_array_new ();
3083
3084         mono_loader_lock ();
3085
3086         g_ptr_array_add (reqs, ss_req->req);
3087
3088         events = create_event_list (EVENT_KIND_STEP, reqs, ji, NULL, &suspend_policy);
3089
3090         g_ptr_array_free (reqs, TRUE);
3091
3092         mono_loader_unlock ();
3093
3094         process_event (EVENT_KIND_STEP, ji->method, il_offset, ctx, events, suspend_policy);
3095 }
3096
3097 static void
3098 process_single_step (void)
3099 {
3100         DebuggerTlsData *tls;
3101         MonoContext ctx;
3102         static void (*restore_context) (void *);
3103
3104         if (!restore_context)
3105                 restore_context = mono_get_restore_context ();
3106
3107         tls = TlsGetValue (debugger_tls_id);
3108         memcpy (&ctx, &tls->handler_ctx, sizeof (MonoContext));
3109
3110         process_single_step_inner (&ctx);
3111
3112         /* This is called when resuming from a signal handler, so it shouldn't return */
3113         restore_context (&ctx);
3114         g_assert_not_reached ();
3115 }
3116
3117 /*
3118  * mono_debugger_agent_single_step_event:
3119  *
3120  *   Called from a signal handler to handle a single step event.
3121  */
3122 void
3123 mono_debugger_agent_single_step_event (void *sigctx)
3124 {
3125         /* Resume to process_single_step through the signal context */
3126
3127         // FIXME: Since step out/over is implemented using step in, the step in case should
3128         // be as fast as possible. Move the relevant code from process_single_step_inner ()
3129         // here
3130
3131         if (GetCurrentThreadId () == debugger_thread_id) {
3132                 /*
3133                  * This could happen despite our best effors when the runtime calls
3134                  * assembly/type resolve hooks.
3135                  * FIXME: Breakpoints too.
3136                  */
3137                 MonoContext ctx;
3138
3139                 mono_arch_sigctx_to_monoctx (sigctx, &ctx);
3140                 mono_arch_skip_single_step (&ctx);
3141                 mono_arch_monoctx_to_sigctx (&ctx, sigctx);
3142                 return;
3143         }
3144
3145         resume_from_signal_handler (sigctx, process_single_step);
3146 }
3147
3148 /*
3149  * start_single_stepping:
3150  *
3151  *   Turn on single stepping. Can be called multiple times, for example,
3152  * by a single step event request + a suspend.
3153  */
3154 static void
3155 start_single_stepping (void)
3156 {
3157 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
3158         int val = InterlockedIncrement (&ss_count);
3159
3160         if (val == 1)
3161                 mono_arch_start_single_stepping ();
3162 #else
3163         g_assert_not_reached ();
3164 #endif
3165 }
3166
3167 static void
3168 stop_single_stepping (void)
3169 {
3170 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
3171         int val = InterlockedDecrement (&ss_count);
3172
3173         if (val == 0)
3174                 mono_arch_stop_single_stepping ();
3175 #else
3176         g_assert_not_reached ();
3177 #endif
3178 }
3179
3180 /*
3181  * Start single stepping of thread THREAD
3182  */
3183 static ErrorCode
3184 ss_start (MonoInternalThread *thread, StepSize size, StepDepth depth, EventRequest *req)
3185 {
3186         DebuggerTlsData *tls;
3187
3188         if (suspend_count == 0)
3189                 return ERR_NOT_SUSPENDED;
3190
3191         wait_for_suspend ();
3192
3193         // FIXME: Multiple requests
3194         if (ss_req)
3195                 return ERR_NOT_IMPLEMENTED;
3196
3197         ss_req = g_new0 (MonoSingleStepReq, 1);
3198         ss_req->req = req;
3199         ss_req->thread = thread;
3200         ss_req->size = size;
3201         ss_req->depth = depth;
3202         req->info = ss_req;
3203
3204         mono_loader_lock ();
3205         tls = mono_g_hash_table_lookup (thread_to_tls, thread);
3206         mono_loader_unlock ();
3207         g_assert (tls);
3208         g_assert (tls->has_context);
3209         ss_req->start_sp = ss_req->last_sp = MONO_CONTEXT_GET_SP (&tls->ctx);
3210
3211         if (ss_req->size == STEP_SIZE_LINE) {
3212                 StackFrame *frame;
3213                 MonoDebugMethodInfo *minfo;
3214
3215                 /* Compute the initial line info */
3216                 compute_frame_info (thread, tls);
3217
3218                 g_assert (tls->frame_count);
3219                 frame = tls->frames [0];
3220
3221                 ss_req->last_method = frame->method;
3222                 ss_req->last_line = -1;
3223
3224                 minfo = mono_debug_lookup_method (frame->method);
3225                 if (minfo && frame->il_offset != -1) {
3226                         MonoDebugSourceLocation *loc = mono_debug_symfile_lookup_location (minfo, frame->il_offset);
3227
3228                         if (loc) {
3229                                 ss_req->last_line = loc->row;
3230                                 g_free (loc);
3231                         }
3232                 }
3233         }
3234
3235         start_single_stepping ();
3236
3237         return 0;
3238 }
3239
3240 static void
3241 ss_stop (EventRequest *req)
3242 {
3243         // FIXME: Locking
3244         g_assert (ss_req);
3245         g_assert (ss_req->req == req);
3246
3247         g_free (ss_req);
3248         ss_req = NULL;
3249
3250         stop_single_stepping ();
3251 }
3252
3253 void
3254 mono_debugger_agent_handle_exception (MonoException *exc, MonoContext *ctx)
3255 {
3256         int suspend_policy;
3257         GSList *events;
3258
3259         /* Just-In-Time debugging */
3260         if (agent_config.onthrow && !inited) {
3261                 GSList *l;
3262                 gboolean found = FALSE;
3263
3264                 for (l = agent_config.onthrow; l; l = l->next) {
3265                         char *ex_type = l->data;
3266                         char *f = mono_type_full_name (&exc->object.vtable->klass->byval_arg);
3267
3268                         if (!strcmp (ex_type, f))
3269                                 found = TRUE;
3270
3271                         g_free (f);
3272                 }
3273
3274                 if (found) {
3275                         finish_agent_init (FALSE);
3276
3277                         /*
3278                          * Send an unsolicited EXCEPTION event with a dummy request id.
3279                          */
3280                         events = g_slist_append (NULL, GUINT_TO_POINTER (0xffffff));
3281                         process_event (EVENT_KIND_EXCEPTION, exc, 0, ctx, events, SUSPEND_POLICY_ALL);
3282                         return;
3283                 }
3284         }
3285
3286         if (!inited)
3287                 return;
3288
3289         mono_loader_lock ();
3290         events = create_event_list (EVENT_KIND_EXCEPTION, NULL, NULL, exc, &suspend_policy);
3291         mono_loader_unlock ();
3292
3293         process_event (EVENT_KIND_EXCEPTION, exc, 0, ctx, events, suspend_policy);
3294 }
3295
3296 void
3297 mono_debugger_agent_handle_unhandled_exception (MonoException *exc, MonoContext *ctx)
3298 {
3299         GSList *events;
3300
3301         if (!agent_config.onuncaught)
3302                 return;
3303
3304         finish_agent_init (FALSE);
3305
3306         /*
3307          * Send an unsolicited EXCEPTION event with a dummy request id.
3308          */
3309         events = g_slist_append (NULL, GUINT_TO_POINTER (0xffffff));
3310         process_event (EVENT_KIND_EXCEPTION, exc, 0, ctx, events, SUSPEND_POLICY_ALL);
3311 }
3312
3313 /*
3314  * buffer_add_value:
3315  *
3316  *   Add the encoding of the value at ADDR described by T to the buffer.
3317  */
3318 static void
3319 buffer_add_value (Buffer *buf, MonoType *t, void *addr, MonoDomain *domain)
3320 {
3321         MonoObject *obj;
3322
3323         if (t->byref) {
3324                 g_assert (*(void**)addr);
3325                 addr = *(void**)addr;
3326         }
3327
3328         switch (t->type) {
3329         case MONO_TYPE_VOID:
3330                 buffer_add_byte (buf, t->type);
3331                 break;
3332         case MONO_TYPE_BOOLEAN:
3333         case MONO_TYPE_I1:
3334         case MONO_TYPE_U1:
3335                 buffer_add_byte (buf, t->type);
3336                 buffer_add_int (buf, *(gint8*)addr);
3337                 break;
3338         case MONO_TYPE_CHAR:
3339         case MONO_TYPE_I2:
3340         case MONO_TYPE_U2:
3341                 buffer_add_byte (buf, t->type);
3342                 buffer_add_int (buf, *(gint16*)addr);
3343                 break;
3344         case MONO_TYPE_I4:
3345         case MONO_TYPE_U4:
3346         case MONO_TYPE_R4:
3347                 buffer_add_byte (buf, t->type);
3348                 buffer_add_int (buf, *(gint32*)addr);
3349                 break;
3350         case MONO_TYPE_I8:
3351         case MONO_TYPE_U8:
3352         case MONO_TYPE_R8:
3353                 buffer_add_byte (buf, t->type);
3354                 buffer_add_long (buf, *(gint64*)addr);
3355                 break;
3356         case MONO_TYPE_I:
3357         case MONO_TYPE_U:
3358         case MONO_TYPE_PTR: {
3359                 gssize val = *(gssize*)addr;
3360
3361                 buffer_add_byte (buf, t->type);
3362                 buffer_add_long (buf, val);
3363                 break;
3364         }
3365         handle_ref:
3366         case MONO_TYPE_STRING:
3367         case MONO_TYPE_SZARRAY:
3368         case MONO_TYPE_OBJECT:
3369         case MONO_TYPE_CLASS:
3370         case MONO_TYPE_ARRAY:
3371                 obj = *(MonoObject**)addr;
3372
3373                 if (!obj) {
3374                         buffer_add_byte (buf, VALUE_TYPE_ID_NULL);
3375                 } else {
3376                         if (obj->vtable->klass->valuetype) {
3377                                 t = &obj->vtable->klass->byval_arg;
3378                                 addr = mono_object_unbox (obj);
3379                                 goto handle_vtype;
3380                         } else if (obj->vtable->klass->rank) {
3381                                 buffer_add_byte (buf, obj->vtable->klass->byval_arg.type);
3382                         } else if (obj->vtable->klass->byval_arg.type == MONO_TYPE_GENERICINST) {
3383                                 buffer_add_byte (buf, MONO_TYPE_CLASS);
3384                         } else {
3385                                 buffer_add_byte (buf, obj->vtable->klass->byval_arg.type);
3386                         }
3387                         buffer_add_objid (buf, obj);
3388                 }
3389                 break;
3390         handle_vtype:
3391         case MONO_TYPE_VALUETYPE: {
3392                 int nfields;
3393                 gpointer iter;
3394                 MonoClassField *f;
3395                 MonoClass *klass = mono_class_from_mono_type (t);
3396
3397                 buffer_add_byte (buf, MONO_TYPE_VALUETYPE);
3398                 buffer_add_byte (buf, klass->enumtype);
3399                 buffer_add_typeid (buf, domain, klass);
3400
3401                 nfields = 0;
3402                 iter = NULL;
3403                 while ((f = mono_class_get_fields (klass, &iter))) {
3404                         if (f->type->attrs & FIELD_ATTRIBUTE_STATIC)
3405                                 continue;
3406                         if (mono_field_is_deleted (f))
3407                                 continue;
3408                         nfields ++;
3409                 }
3410                 buffer_add_int (buf, nfields);
3411
3412                 iter = NULL;
3413                 while ((f = mono_class_get_fields (klass, &iter))) {
3414                         if (f->type->attrs & FIELD_ATTRIBUTE_STATIC)
3415                                 continue;
3416                         if (mono_field_is_deleted (f))
3417                                 continue;
3418                         buffer_add_value (buf, f->type, (guint8*)addr + f->offset - sizeof (MonoObject), domain);
3419                 }
3420                 break;
3421         }
3422         case MONO_TYPE_GENERICINST:
3423                 if (mono_type_generic_inst_is_valuetype (t)) {
3424                         goto handle_vtype;
3425                 } else {
3426                         goto handle_ref;
3427                 }
3428                 break;
3429         default:
3430                 NOT_IMPLEMENTED;
3431         }
3432 }
3433
3434 static ErrorCode
3435 decode_value (MonoType *t, MonoDomain *domain, guint8 *addr, guint8 *buf, guint8 **endbuf, guint8 *limit)
3436 {
3437         int err;
3438         int type = decode_byte (buf, &buf, limit);
3439
3440         if (type != t->type && !MONO_TYPE_IS_REFERENCE (t)) {
3441                 DEBUG(1, fprintf (log_file, "Expected value of type %d, got %d.\n", t->type, type));
3442                 return ERR_INVALID_ARGUMENT;
3443         }
3444
3445         switch (t->type) {
3446         case MONO_TYPE_BOOLEAN:
3447                 *(guint8*)addr = decode_int (buf, &buf, limit);
3448                 break;
3449         case MONO_TYPE_CHAR:
3450                 *(gunichar2*)addr = decode_int (buf, &buf, limit);
3451                 break;
3452         case MONO_TYPE_I1:
3453                 *(gint8*)addr = decode_int (buf, &buf, limit);
3454                 break;
3455         case MONO_TYPE_U1:
3456                 *(guint8*)addr = decode_int (buf, &buf, limit);
3457                 break;
3458         case MONO_TYPE_I2:
3459                 *(gint16*)addr = decode_int (buf, &buf, limit);
3460                 break;
3461         case MONO_TYPE_U2:
3462                 *(guint16*)addr = decode_int (buf, &buf, limit);
3463                 break;
3464         case MONO_TYPE_I4:
3465                 *(gint32*)addr = decode_int (buf, &buf, limit);
3466                 break;
3467         case MONO_TYPE_U4:
3468                 *(guint32*)addr = decode_int (buf, &buf, limit);
3469                 break;
3470         case MONO_TYPE_I8:
3471                 *(gint64*)addr = decode_long (buf, &buf, limit);
3472                 break;
3473         case MONO_TYPE_U8:
3474                 *(guint64*)addr = decode_long (buf, &buf, limit);
3475                 break;
3476         case MONO_TYPE_R4:
3477                 *(guint32*)addr = decode_int (buf, &buf, limit);
3478                 break;
3479         case MONO_TYPE_R8:
3480                 *(guint64*)addr = decode_long (buf, &buf, limit);
3481                 break;
3482         case MONO_TYPE_VALUETYPE: {
3483                 gboolean is_enum = decode_byte (buf, &buf, limit);
3484                 MonoClass *klass;
3485                 MonoClassField *f;
3486                 int nfields;
3487                 gpointer iter = NULL;
3488                 MonoDomain *d;
3489
3490                 /* Enums are sent as a normal vtype */
3491                 if (is_enum)
3492                         return ERR_NOT_IMPLEMENTED;
3493                 klass = decode_typeid (buf, &buf, limit, &d, &err);
3494                 if (err)
3495                         return err;
3496
3497                 if (klass != mono_class_from_mono_type (t))
3498                         return ERR_INVALID_ARGUMENT;
3499
3500                 nfields = decode_int (buf, &buf, limit);
3501                 while ((f = mono_class_get_fields (klass, &iter))) {
3502                         if (f->type->attrs & FIELD_ATTRIBUTE_STATIC)
3503                                 continue;
3504                         if (mono_field_is_deleted (f))
3505                                 continue;
3506                         err = decode_value (f->type, domain, (guint8*)addr + f->offset - sizeof (MonoObject), buf, &buf, limit);
3507                         if (err)
3508                                 return err;
3509                         nfields --;
3510                 }
3511                 g_assert (nfields == 0);
3512                 break;
3513         }
3514         default:
3515                 if (MONO_TYPE_IS_REFERENCE (t)) {
3516                         if (type == MONO_TYPE_OBJECT) {
3517                                 int objid = decode_objid (buf, &buf, limit);
3518                                 int err;
3519                                 MonoObject *obj;
3520
3521                                 err = get_object (objid, (MonoObject**)&obj);
3522                                 if (err)
3523                                         return err;
3524
3525                                 if (obj && !mono_class_is_assignable_from (mono_class_from_mono_type (t), obj->vtable->klass))
3526                                         return ERR_INVALID_ARGUMENT;
3527                                 if (obj && obj->vtable->domain != domain)
3528                                         return ERR_INVALID_ARGUMENT;
3529
3530                                 mono_gc_wbarrier_generic_store (addr, obj);
3531                         } else if (type == VALUE_TYPE_ID_NULL) {
3532                                 *(MonoObject**)addr = NULL;
3533                         } else {
3534                                 return ERR_INVALID_ARGUMENT;
3535                         }
3536                 } else {
3537                         NOT_IMPLEMENTED;
3538                 }
3539                 break;
3540         }
3541
3542         *endbuf = buf;
3543
3544         return 0;
3545 }
3546
3547 static void
3548 add_var (Buffer *buf, MonoType *t, MonoDebugVarInfo *var, MonoContext *ctx, MonoDomain *domain)
3549 {
3550         guint32 flags;
3551         int reg;
3552         guint8 *addr;
3553         gpointer reg_val;
3554
3555         flags = var->index & MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS;
3556         reg = var->index & ~MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS;
3557
3558         switch (flags) {
3559         case MONO_DEBUG_VAR_ADDRESS_MODE_REGISTER:
3560                 reg_val = mono_arch_context_get_int_reg (ctx, reg);
3561
3562                 buffer_add_value (buf, t, &reg_val, domain);
3563                 break;
3564         case MONO_DEBUG_VAR_ADDRESS_MODE_REGOFFSET:
3565                 addr = mono_arch_context_get_int_reg (ctx, reg);
3566                 addr += (gint32)var->offset;
3567
3568                 //printf ("[R%d+%d] = %p\n", reg, var->offset, addr);
3569
3570                 buffer_add_value (buf, t, addr, domain);
3571                 break;
3572         case MONO_DEBUG_VAR_ADDRESS_MODE_DEAD:
3573                 NOT_IMPLEMENTED;
3574                 break;
3575         default:
3576                 g_assert_not_reached ();
3577         }
3578 }
3579
3580 static void
3581 set_var (MonoType *t, MonoDebugVarInfo *var, MonoContext *ctx, MonoDomain *domain, guint8 *val)
3582 {
3583         guint32 flags;
3584         int reg, size;
3585         guint8 *addr;
3586
3587         flags = var->index & MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS;
3588         reg = var->index & ~MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS;
3589
3590         if (MONO_TYPE_IS_REFERENCE (t))
3591                 size = sizeof (gpointer);
3592         else
3593                 size = mono_class_value_size (mono_class_from_mono_type (t), NULL);
3594
3595         switch (flags) {
3596         case MONO_DEBUG_VAR_ADDRESS_MODE_REGISTER:
3597                 // FIXME: Can't set registers, so we disable linears
3598                 NOT_IMPLEMENTED;
3599                 break;
3600         case MONO_DEBUG_VAR_ADDRESS_MODE_REGOFFSET:
3601                 addr = mono_arch_context_get_int_reg (ctx, reg);
3602                 addr += (gint32)var->offset;
3603
3604                 //printf ("[R%d+%d] = %p\n", reg, var->offset, addr);
3605
3606                 // FIXME: Write barriers
3607                 memcpy (addr, val, size);
3608                 break;
3609         case MONO_DEBUG_VAR_ADDRESS_MODE_DEAD:
3610                 NOT_IMPLEMENTED;
3611                 break;
3612         default:
3613                 g_assert_not_reached ();
3614         }
3615 }
3616
3617 static void
3618 clear_event_request (int req_id, int etype)
3619 {
3620         int i;
3621
3622         mono_loader_lock ();
3623         for (i = 0; i < event_requests->len; ++i) {
3624                 EventRequest *req = g_ptr_array_index (event_requests, i);
3625
3626                 if (req->id == req_id && req->event_kind == etype) {
3627                         if (req->event_kind == EVENT_KIND_BREAKPOINT)
3628                                 clear_breakpoint (req->info);
3629                         if (req->event_kind == EVENT_KIND_STEP)
3630                                 ss_stop (req);
3631                         g_ptr_array_remove_index_fast (event_requests, i);
3632                         g_free (req);
3633                         break;
3634                 }
3635         }
3636         mono_loader_unlock ();
3637 }
3638
3639 static void
3640 add_thread (gpointer key, gpointer value, gpointer user_data)
3641 {
3642         MonoInternalThread *thread = value;
3643         Buffer *buf = user_data;
3644
3645         buffer_add_objid (buf, (MonoObject*)thread);
3646 }
3647
3648 static ErrorCode
3649 do_invoke_method (Buffer *buf, InvokeData *invoke)
3650 {
3651         guint8 *p = invoke->p;
3652         guint8 *end = invoke->endp;
3653         MonoMethod *m;
3654         int i, err, nargs;
3655         MonoMethodSignature *sig;
3656         guint8 **arg_buf;
3657         void **args;
3658         MonoObject *this, *res, *exc;
3659         MonoDomain *domain;
3660         guint8 *this_buf;
3661 #ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
3662         MonoLMFExt ext;
3663 #endif
3664
3665         m = decode_methodid (p, &p, end, &domain, &err);
3666         if (err)
3667                 return err;
3668         sig = mono_method_signature (m);
3669
3670         if (m->klass->valuetype)
3671                 this_buf = g_alloca (mono_class_instance_size (m->klass));
3672         else
3673                 this_buf = g_alloca (sizeof (MonoObject*));
3674         err = decode_value (&m->klass->byval_arg, domain, this_buf, p, &p, end);
3675         if (err)
3676                 return err;
3677
3678         if (!m->klass->valuetype)
3679                 this = *(MonoObject**)this_buf;
3680         else
3681                 this = NULL;
3682
3683         DEBUG (1, printf ("[%p] Invoking method '%s' on receiver '%s'.\n", (gpointer)GetCurrentThreadId (), mono_method_full_name (m, TRUE), this ? this->vtable->klass->name : "<null>"));
3684
3685         if (this && this->vtable->domain != domain)
3686                 NOT_IMPLEMENTED;
3687
3688         if (!m->klass->valuetype && !(m->flags & METHOD_ATTRIBUTE_STATIC) && !this) {
3689                 if (!strcmp (m->name, ".ctor")) {
3690                         if (m->klass->flags & TYPE_ATTRIBUTE_ABSTRACT)
3691                                 return ERR_INVALID_ARGUMENT;
3692                         else
3693                                 this = mono_object_new (domain, m->klass);
3694                 } else {
3695                         return ERR_INVALID_ARGUMENT;
3696                 }
3697         }
3698
3699         if (this && !mono_class_is_assignable_from (m->klass, this->vtable->klass))
3700                 return ERR_INVALID_ARGUMENT;
3701
3702         nargs = decode_int (p, &p, end);
3703         if (nargs != sig->param_count)
3704                 return ERR_INVALID_ARGUMENT;
3705         /* Use alloca to get gc tracking */
3706         arg_buf = g_alloca (nargs * sizeof (gpointer));
3707         memset (arg_buf, 0, nargs * sizeof (gpointer));
3708         args = g_alloca (nargs * sizeof (gpointer));
3709         for (i = 0; i < nargs; ++i) {
3710                 if (MONO_TYPE_IS_REFERENCE (sig->params [i])) {
3711                         err = decode_value (sig->params [i], domain, (guint8*)&args [i], p, &p, end);
3712                         if (err)
3713                                 break;
3714
3715                         if (args [i] && ((MonoObject*)args [i])->vtable->domain != domain)
3716                                 NOT_IMPLEMENTED;
3717                 } else {
3718                         arg_buf [i] = g_alloca (mono_class_instance_size (mono_class_from_mono_type (sig->params [i])));
3719                         err = decode_value (sig->params [i], domain, arg_buf [i], p, &p, end);
3720                         if (err)
3721                                 break;
3722                         args [i] = arg_buf [i];
3723                 }
3724         }
3725
3726         if (i < nargs)
3727                 return err;
3728
3729         /*
3730          * Add an LMF frame to link the stack frames on the invoke method with our caller.
3731          */
3732         /* FIXME: Move this to arch specific code */
3733 #ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
3734         if (invoke->has_ctx) {
3735                 MonoLMF **lmf_addr;
3736
3737                 lmf_addr = mono_get_lmf_addr ();
3738
3739                 /* Setup our lmf */
3740                 memset (&ext, 0, sizeof (ext));
3741 #ifdef TARGET_AMD64
3742                 ext.lmf.previous_lmf = *(lmf_addr);
3743                 /* Mark that this is a MonoLMFExt */
3744                 ext.lmf.previous_lmf = (gpointer)(((gssize)ext.lmf.previous_lmf) | 2);
3745                 ext.lmf.rsp = (gssize)&ext;
3746 #elif defined(TARGET_X86)
3747                 ext.lmf.previous_lmf = (gsize)*(lmf_addr);
3748                 /* Mark that this is a MonoLMFExt */
3749                 ext.lmf.previous_lmf = (gsize)(gpointer)(((gssize)ext.lmf.previous_lmf) | 2);
3750                 ext.lmf.ebp = (gssize)&ext;
3751 #elif defined(TARGET_ARM)
3752                 ext.lmf.previous_lmf = *(lmf_addr);
3753                 /* Mark that this is a MonoLMFExt */
3754                 ext.lmf.previous_lmf = (gpointer)(((gssize)ext.lmf.previous_lmf) | 2);
3755                 ext.lmf.ebp = (gssize)&ext;
3756 #else
3757                 g_assert_not_reached ();
3758 #endif
3759
3760                 ext.debugger_invoke = TRUE;
3761                 memcpy (&ext.ctx, &invoke->ctx, sizeof (MonoContext));
3762
3763                 mono_set_lmf ((MonoLMF*)&ext);
3764         }
3765 #endif
3766
3767         if (m->klass->valuetype)
3768                 res = mono_runtime_invoke (m, this_buf, args, &exc);
3769         else
3770                 res = mono_runtime_invoke (m, this, args, &exc);
3771         if (exc) {
3772                 buffer_add_byte (buf, 0);
3773                 buffer_add_value (buf, &mono_defaults.object_class->byval_arg, &exc, domain);
3774         } else {
3775                 buffer_add_byte (buf, 1);
3776                 if (sig->ret->type == MONO_TYPE_VOID) {
3777                         if (!strcmp (m->name, ".ctor") && !m->klass->valuetype) {
3778                                 buffer_add_value (buf, &mono_defaults.object_class->byval_arg, &this, domain);
3779                         }
3780                         else
3781                                 buffer_add_value (buf, &mono_defaults.void_class->byval_arg, NULL, domain);
3782                 } else if (MONO_TYPE_IS_REFERENCE (sig->ret)) {
3783                         buffer_add_value (buf, sig->ret, &res, domain);
3784                 } else if (mono_class_from_mono_type (sig->ret)->valuetype) {
3785                         g_assert (res);
3786                         buffer_add_value (buf, sig->ret, mono_object_unbox (res), domain);
3787                 } else {
3788                         NOT_IMPLEMENTED;
3789                 }
3790         }
3791
3792 #ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
3793         if (invoke->has_ctx)
3794                 mono_set_lmf ((gpointer)(((gssize)ext.lmf.previous_lmf) & ~3));
3795 #endif
3796
3797         // FIXME: byref arguments
3798         // FIXME: varargs
3799         return ERR_NONE;
3800 }
3801
3802 /*
3803  * invoke_method:
3804  *
3805  *   Invoke the method given by tls->invoke in the current thread.
3806  */
3807 static void
3808 invoke_method (void)
3809 {
3810         DebuggerTlsData *tls;
3811         InvokeData *invoke;
3812         int id;
3813         int err;
3814         Buffer buf;
3815         static void (*restore_context) (void *);
3816         MonoContext restore_ctx;
3817
3818         if (!restore_context)
3819                 restore_context = mono_get_restore_context ();
3820
3821         tls = TlsGetValue (debugger_tls_id);
3822         g_assert (tls);
3823
3824         invoke = tls->invoke;
3825         g_assert (invoke);
3826         tls->invoke = NULL;
3827
3828         tls->frames_up_to_date = FALSE;
3829
3830         id = invoke->id;
3831
3832         buffer_init (&buf, 128);
3833
3834         err = do_invoke_method (&buf, invoke);
3835
3836         /* Start suspending before sending the reply */
3837         suspend_vm ();
3838
3839         send_reply_packet (id, err, &buf);
3840
3841         buffer_free (&buf);
3842
3843         memcpy (&restore_ctx, &invoke->ctx, sizeof (MonoContext));
3844
3845         if (invoke->has_ctx)
3846                 save_thread_context (&restore_ctx);
3847
3848         g_free (invoke->p);
3849         g_free (invoke);
3850
3851         suspend_current ();
3852 }
3853
3854 static ErrorCode
3855 vm_commands (int command, int id, guint8 *p, guint8 *end, Buffer *buf)
3856 {
3857         switch (command) {
3858         case CMD_VM_VERSION: {
3859                 char *build_info, *version;
3860
3861                 build_info = mono_get_runtime_build_info ();
3862                 version = g_strdup_printf ("mono %s", build_info);
3863
3864                 buffer_add_string (buf, version); /* vm version */
3865                 buffer_add_int (buf, MAJOR_VERSION);
3866                 buffer_add_int (buf, MINOR_VERSION);
3867                 g_free (build_info);
3868                 g_free (version);
3869                 break;
3870         }
3871         case CMD_VM_ALL_THREADS: {
3872                 // FIXME: Domains
3873                 mono_loader_lock ();
3874                 buffer_add_int (buf, mono_g_hash_table_size (tid_to_thread_obj));
3875                 mono_g_hash_table_foreach (tid_to_thread_obj, add_thread, buf);
3876                 mono_loader_unlock ();
3877                 break;
3878         }
3879         case CMD_VM_SUSPEND:
3880                 suspend_vm ();
3881                 wait_for_suspend ();
3882                 break;
3883         case CMD_VM_RESUME:
3884                 if (suspend_count == 0)
3885                         return ERR_NOT_SUSPENDED;
3886                 resume_vm ();
3887                 break;
3888         case CMD_VM_DISPOSE:
3889                 /* Clear all event requests */
3890                 mono_loader_lock ();
3891                 while (event_requests->len > 0) {
3892                         EventRequest *req = g_ptr_array_index (event_requests, 0);
3893
3894                         clear_event_request (req->id, req->event_kind);
3895                 }
3896                 mono_loader_unlock ();
3897
3898                 // FIXME: Count resumes
3899                 resume_vm ();
3900                 disconnected = TRUE;
3901                 break;
3902         case CMD_VM_EXIT: {
3903                 int exit_code = decode_int (p, &p, end);
3904
3905                 // FIXME: What if there is a VM_DEATH event request with SUSPEND_ALL ?
3906
3907                 /* Have to send a reply before exiting */
3908                 send_reply_packet (id, 0, buf);
3909
3910                 /* Clear all event requests */
3911                 mono_loader_lock ();
3912                 while (event_requests->len > 0) {
3913                         EventRequest *req = g_ptr_array_index (event_requests, 0);
3914
3915                         clear_event_request (req->id, req->event_kind);
3916                 }
3917                 mono_loader_unlock ();
3918
3919                 /* FIXME: Races with normal shutdown */
3920                 while (suspend_count > 0)
3921                         resume_vm ();
3922
3923                 /*
3924                  * The JDWP documentation says that the shutdown is not orderly. It doesn't
3925                  * specify whenever a VM_DEATH event is sent. We currently do an orderly
3926                  * shutdown similar to Environment.Exit ().
3927                  */
3928                 mono_runtime_set_shutting_down ();
3929
3930                 mono_threads_set_shutting_down ();
3931
3932                 /* Suspend all managed threads since the runtime is going away */
3933                 DEBUG(1, fprintf (log_file, "Suspending all threads...\n"));
3934                 mono_thread_suspend_all_other_threads ();
3935                 DEBUG(1, fprintf (log_file, "Shutting down the runtime...\n"));
3936                 mono_runtime_quit ();
3937 #ifdef PLATFORM_WIN32
3938                 shutdown (conn_fd, SD_BOTH);
3939 #else
3940                 shutdown (conn_fd, SHUT_RDWR);
3941 #endif
3942                 DEBUG(1, fprintf (log_file, "Exiting...\n"));
3943
3944                 exit (exit_code);
3945         }
3946         case CMD_VM_INVOKE_METHOD: {
3947                 int objid = decode_objid (p, &p, end);
3948                 MonoThread *thread;
3949                 DebuggerTlsData *tls;
3950                 int err;
3951
3952                 err = get_object (objid, (MonoObject**)&thread);
3953                 if (err)
3954                         return err;
3955
3956                 // Wait for suspending if it already started
3957                 if (suspend_count)
3958                         wait_for_suspend ();
3959                 if (!is_suspended ())
3960                         return ERR_NOT_SUSPENDED;
3961
3962                 mono_loader_lock ();
3963                 tls = mono_g_hash_table_lookup (thread_to_tls, THREAD_TO_INTERNAL (thread));
3964                 mono_loader_unlock ();
3965                 g_assert (tls);
3966
3967                 /*
3968                  * Store the invoke data into tls, the thread will execute it after it is
3969                  * resumed.
3970                  */
3971                 if (tls->invoke)
3972                         NOT_IMPLEMENTED;
3973                 tls->invoke = g_new0 (InvokeData, 1);
3974                 tls->invoke->id = id;
3975                 tls->invoke->p = g_malloc (end - p);
3976                 memcpy (tls->invoke->p, p, end - p);
3977                 tls->invoke->endp = tls->invoke->p + (end - p);
3978
3979                 resume_vm ();
3980                 break;
3981         }
3982         default:
3983                 return ERR_NOT_IMPLEMENTED;
3984         }
3985
3986         return ERR_NONE;
3987 }
3988
3989 static ErrorCode
3990 event_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
3991 {
3992         int err;
3993
3994         switch (command) {
3995         case CMD_EVENT_REQUEST_SET: {
3996                 EventRequest *req;
3997                 int i, event_kind, suspend_policy, nmodifiers, mod;
3998                 MonoMethod *method;
3999                 long location;
4000                 MonoThread *step_thread;
4001                 int size, depth, step_thread_id;
4002                 MonoDomain *domain;
4003
4004                 event_kind = decode_byte (p, &p, end);
4005                 suspend_policy = decode_byte (p, &p, end);
4006                 nmodifiers = decode_byte (p, &p, end);
4007
4008                 req = g_malloc0 (sizeof (EventRequest) + (nmodifiers * sizeof (Modifier)));
4009                 req->id = InterlockedIncrement (&event_request_id);
4010                 req->event_kind = event_kind;
4011                 req->suspend_policy = suspend_policy;
4012                 req->nmodifiers = nmodifiers;
4013
4014                 method = NULL;
4015                 for (i = 0; i < nmodifiers; ++i) {
4016                         mod = decode_byte (p, &p, end);
4017
4018                         req->modifiers [i].kind = mod;
4019                         if (mod == MOD_KIND_COUNT) {
4020                                 req->modifiers [i].data.count = decode_int (p, &p, end);
4021                         } else if (mod == MOD_KIND_LOCATION_ONLY) {
4022                                 method = decode_methodid (p, &p, end, &domain, &err);
4023                                 if (err)
4024                                         return err;
4025                                 location = decode_long (p, &p, end);
4026                         } else if (mod == MOD_KIND_STEP) {
4027                                 step_thread_id = decode_id (p, &p, end);
4028                                 size = decode_int (p, &p, end);
4029                                 depth = decode_int (p, &p, end);
4030                         } else if (mod == MOD_KIND_THREAD_ONLY) {
4031                                 int id = decode_id (p, &p, end);
4032
4033                                 err = get_object (id, (MonoObject**)&req->modifiers [i].data.thread);
4034                                 if (err) {
4035                                         g_free (req);
4036                                         return err;
4037                                 }
4038                         } else if (mod == MOD_KIND_EXCEPTION_ONLY) {
4039                                 MonoClass *exc_class = decode_typeid (p, &p, end, &domain, &err);
4040
4041                                 if (err)
4042                                         return err;
4043                                 if (exc_class) {
4044                                         req->modifiers [i].data.exc_class = exc_class;
4045
4046                                         if (!mono_class_is_assignable_from (mono_defaults.exception_class, exc_class)) {
4047                                                 g_free (req);
4048                                                 return ERR_INVALID_ARGUMENT;
4049                                         }
4050                                 }
4051                         } else if (mod == MOD_KIND_ASSEMBLY_ONLY) {
4052                                 int n = decode_int (p, &p, end);
4053                                 int j;
4054
4055                                 req->modifiers [i].data.assemblies = g_new0 (MonoAssembly*, n);
4056                                 for (j = 0; j < n; ++j) {
4057                                         req->modifiers [i].data.assemblies [j] = decode_assemblyid (p, &p, end, &domain, &err);
4058                                         if (err) {
4059                                                 g_free (req->modifiers [i].data.assemblies);
4060                                                 return err;
4061                                         }
4062                                 }
4063                         } else {
4064                                 g_free (req);
4065                                 return ERR_NOT_IMPLEMENTED;
4066                         }
4067                 }
4068
4069                 if (req->event_kind == EVENT_KIND_BREAKPOINT) {
4070                         g_assert (method);
4071
4072                         req->info = set_breakpoint (method, location, req);
4073                 } else if (req->event_kind == EVENT_KIND_STEP) {
4074                         g_assert (step_thread_id);
4075
4076                         err = get_object (step_thread_id, (MonoObject**)&step_thread);
4077                         if (err) {
4078                                 g_free (req);
4079                                 return err;
4080                         }
4081
4082                         err = ss_start (THREAD_TO_INTERNAL (step_thread), size, depth, req);
4083                         if (err) {
4084                                 g_free (req);
4085                                 return err;
4086                         }
4087                 } else if (req->event_kind == EVENT_KIND_METHOD_ENTRY) {
4088                         req->info = set_breakpoint (NULL, METHOD_ENTRY_IL_OFFSET, req);
4089                 } else if (req->event_kind == EVENT_KIND_METHOD_EXIT) {
4090                         req->info = set_breakpoint (NULL, METHOD_EXIT_IL_OFFSET, req);
4091                 } else if (req->event_kind == EVENT_KIND_EXCEPTION) {
4092                 } else {
4093                         if (req->nmodifiers) {
4094                                 g_free (req);
4095                                 return ERR_NOT_IMPLEMENTED;
4096                         }
4097                 }
4098
4099                 mono_loader_lock ();
4100                 g_ptr_array_add (event_requests, req);
4101                 mono_loader_unlock ();
4102
4103                 buffer_add_int (buf, req->id);
4104                 break;
4105         }
4106         case CMD_EVENT_REQUEST_CLEAR: {
4107                 int etype = decode_byte (p, &p, end);
4108                 int req_id = decode_int (p, &p, end);
4109
4110                 // FIXME: Make a faster mapping from req_id to request
4111                 mono_loader_lock ();
4112                 clear_event_request (req_id, etype);
4113                 mono_loader_unlock ();
4114                 break;
4115         }
4116         case CMD_EVENT_REQUEST_CLEAR_ALL_BREAKPOINTS: {
4117                 int i;
4118
4119                 mono_loader_lock ();
4120                 i = 0;
4121                 while (i < event_requests->len) {
4122                         EventRequest *req = g_ptr_array_index (event_requests, i);
4123
4124                         if (req->event_kind == EVENT_KIND_BREAKPOINT) {
4125                                 clear_breakpoint (req->info);
4126
4127                                 g_ptr_array_remove_index_fast (event_requests, i);
4128                                 g_free (req);
4129                         } else {
4130                                 i ++;
4131                         }
4132                 }
4133                 mono_loader_unlock ();
4134                 break;
4135         }
4136         default:
4137                 return ERR_NOT_IMPLEMENTED;
4138         }
4139
4140         return ERR_NONE;
4141 }
4142
4143 static ErrorCode
4144 domain_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4145 {
4146         int err;
4147         MonoDomain *domain;
4148
4149         switch (command) {
4150         case CMD_APPDOMAIN_GET_ROOT_DOMAIN: {
4151                 buffer_add_domainid (buf, mono_get_root_domain ());
4152                 break;
4153         }
4154         case CMD_APPDOMAIN_GET_FRIENDLY_NAME: {
4155                 domain = decode_domainid (p, &p, end, NULL, &err);
4156                 if (err)
4157                         return err;
4158                 buffer_add_string (buf, domain->friendly_name);
4159                 break;
4160         }
4161         case CMD_APPDOMAIN_GET_ASSEMBLIES: {
4162                 GSList *tmp;
4163                 MonoAssembly *ass;
4164                 int count;
4165
4166                 domain = decode_domainid (p, &p, end, NULL, &err);
4167                 if (err)
4168                         return err;
4169                 mono_loader_lock ();
4170                 count = 0;
4171                 for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
4172                         count ++;
4173                 }
4174                 buffer_add_int (buf, count);
4175                 for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
4176                         ass = tmp->data;
4177                         buffer_add_assemblyid (buf, domain, ass);
4178                 }
4179                 mono_loader_unlock ();
4180                 break;
4181         }
4182         case CMD_APPDOMAIN_GET_ENTRY_ASSEMBLY: {
4183                 domain = decode_domainid (p, &p, end, NULL, &err);
4184                 if (err)
4185                         return err;
4186
4187                 buffer_add_assemblyid (buf, domain, domain->entry_assembly);
4188                 break;
4189         }
4190         case CMD_APPDOMAIN_GET_CORLIB: {
4191                 domain = decode_domainid (p, &p, end, NULL, &err);
4192                 if (err)
4193                         return err;
4194
4195                 buffer_add_assemblyid (buf, domain, domain->domain->mbr.obj.vtable->klass->image->assembly);
4196                 break;
4197         }
4198         case CMD_APPDOMAIN_CREATE_STRING: {
4199                 char *s;
4200                 MonoString *o;
4201
4202                 domain = decode_domainid (p, &p, end, NULL, &err);
4203                 if (err)
4204                         return err;
4205                 s = decode_string (p, &p, end);
4206
4207                 o = mono_string_new (domain, s);
4208                 buffer_add_objid (buf, (MonoObject*)o);
4209                 break;
4210         }
4211         default:
4212                 return ERR_NOT_IMPLEMENTED;
4213         }
4214
4215         return ERR_NONE;
4216 }
4217
4218 static ErrorCode
4219 assembly_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4220 {
4221         int err;
4222         MonoAssembly *ass;
4223         MonoDomain *domain;
4224
4225         ass = decode_assemblyid (p, &p, end, &domain, &err);
4226         if (err)
4227                 return err;
4228
4229         switch (command) {
4230         case CMD_ASSEMBLY_GET_LOCATION: {
4231                 buffer_add_string (buf, mono_image_get_filename (ass->image));
4232                 break;
4233         }
4234         case CMD_ASSEMBLY_GET_ENTRY_POINT: {
4235                 guint32 token;
4236                 MonoMethod *m;
4237
4238                 if (ass->image->dynamic) {
4239                         buffer_add_id (buf, 0);
4240                 } else {
4241                         token = mono_image_get_entry_point (ass->image);
4242                         if (token == 0) {
4243                                 buffer_add_id (buf, 0);
4244                         } else {
4245                                 m = mono_get_method (ass->image, token, NULL);
4246                                 buffer_add_methodid (buf, domain, m);
4247                         }
4248                 }
4249                 break;
4250         }
4251         case CMD_ASSEMBLY_GET_MANIFEST_MODULE: {
4252                 buffer_add_moduleid (buf, domain, ass->image);
4253                 break;
4254         }
4255         case CMD_ASSEMBLY_GET_OBJECT: {
4256                 MonoObject *o = (MonoObject*)mono_assembly_get_object (mono_domain_get (), ass);
4257                 buffer_add_objid (buf, o);
4258                 break;
4259         }
4260         case CMD_ASSEMBLY_GET_TYPE: {
4261                 char *s = decode_string (p, &p, end);
4262                 gboolean ignorecase = decode_byte (p, &p, end);
4263                 MonoTypeNameParse info;
4264                 MonoType *t;
4265                 gboolean type_resolve;
4266
4267                 if (!mono_reflection_parse_type (s, &info)) {
4268                         t = NULL;
4269                 } else {
4270                         if (info.assembly.name)
4271                                 NOT_IMPLEMENTED;
4272                         t = mono_reflection_get_type (ass->image, &info, ignorecase, &type_resolve);
4273                 }
4274                 buffer_add_typeid (buf, domain, t ? mono_class_from_mono_type (t) : NULL);
4275                 mono_reflection_free_type_info (&info);
4276                 g_free (s);
4277
4278                 break;
4279         }
4280         default:
4281                 return ERR_NOT_IMPLEMENTED;
4282         }
4283
4284         return ERR_NONE;
4285 }
4286
4287 static ErrorCode
4288 module_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4289 {
4290         int err;
4291         MonoDomain *domain;
4292
4293         switch (command) {
4294         case CMD_MODULE_GET_INFO: {
4295                 MonoImage *image = decode_moduleid (p, &p, end, &domain, &err);
4296                 char *basename;
4297
4298                 basename = g_path_get_basename (image->name);
4299                 buffer_add_string (buf, basename); // name
4300                 buffer_add_string (buf, image->module_name); // scopename
4301                 buffer_add_string (buf, image->name); // fqname
4302                 buffer_add_string (buf, mono_image_get_guid (image)); // guid
4303                 buffer_add_assemblyid (buf, domain, image->assembly); // assembly
4304                 g_free (basename);
4305                 break;
4306         }
4307         default:
4308                 return ERR_NOT_IMPLEMENTED;
4309         }
4310
4311         return ERR_NONE;
4312 }
4313
4314 static void
4315 buffer_add_cattr_arg (Buffer *buf, MonoType *t, MonoDomain *domain, MonoObject *val)
4316 {
4317         if (val && val->vtable->klass == mono_defaults.monotype_class) {
4318                 /* Special case these so the client doesn't have to handle Type objects */
4319
4320                 buffer_add_byte (buf, VALUE_TYPE_ID_TYPE);
4321                 buffer_add_typeid (buf, domain, mono_class_from_mono_type (((MonoReflectionType*)val)->type));
4322         } else if (MONO_TYPE_IS_REFERENCE (t))
4323                 buffer_add_value (buf, t, &val, domain);
4324         else
4325                 buffer_add_value (buf, t, mono_object_unbox (val), domain);
4326 }
4327
4328 static void
4329 buffer_add_cattrs (Buffer *buf, MonoDomain *domain, MonoImage *image, MonoClass *attr_klass, MonoCustomAttrInfo *cinfo)
4330 {
4331         int i, j;
4332         int nattrs = 0;
4333
4334         if (!cinfo) {
4335                 buffer_add_int (buf, 0);
4336                 return;
4337         }
4338
4339         for (i = 0; i < cinfo->num_attrs; ++i) {
4340                 if (!attr_klass || mono_class_has_parent (cinfo->attrs [i].ctor->klass, attr_klass))
4341                         nattrs ++;
4342         }
4343         buffer_add_int (buf, nattrs);
4344
4345         for (i = 0; i < cinfo->num_attrs; ++i) {
4346                 MonoCustomAttrEntry *attr = &cinfo->attrs [i];
4347                 if (!attr_klass || mono_class_has_parent (attr->ctor->klass, attr_klass)) {
4348                         MonoArray *typed_args, *named_args;
4349                         MonoType *t;
4350                         CattrNamedArg *arginfo;
4351
4352                         mono_reflection_create_custom_attr_data_args (image, attr->ctor, attr->data, attr->data_size, &typed_args, &named_args, &arginfo);
4353
4354                         buffer_add_methodid (buf, domain, attr->ctor);
4355
4356                         /* Ctor args */
4357                         if (typed_args) {
4358                                 buffer_add_int (buf, mono_array_length (typed_args));
4359                                 for (j = 0; j < mono_array_length (typed_args); ++j) {
4360                                         MonoObject *val = mono_array_get (typed_args, MonoObject*, j);
4361
4362                                         t = mono_method_signature (attr->ctor)->params [j];
4363
4364                                         buffer_add_cattr_arg (buf, t, domain, val);
4365                                 }
4366                         } else {
4367                                 buffer_add_int (buf, 0);
4368                         }
4369
4370                         /* Named args */
4371                         if (named_args) {
4372                                 buffer_add_int (buf, mono_array_length (named_args));
4373
4374                                 for (j = 0; j < mono_array_length (named_args); ++j) {
4375                                         MonoObject *val = mono_array_get (named_args, MonoObject*, j);
4376
4377                                         if (arginfo [j].prop) {
4378                                                 buffer_add_byte (buf, 0x54);
4379                                                 buffer_add_propertyid (buf, domain, arginfo [j].prop);
4380                                         } else if (arginfo [j].field) {
4381                                                 buffer_add_byte (buf, 0x53);
4382                                         } else {
4383                                                 g_assert_not_reached ();
4384                                         }
4385
4386                                         buffer_add_cattr_arg (buf, arginfo [j].type, domain, val);
4387                                 }
4388                         } else {
4389                                 buffer_add_int (buf, 0);
4390                         }
4391                 }
4392         }
4393 }
4394
4395 static ErrorCode
4396 type_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4397 {
4398         MonoClass *klass;
4399         MonoDomain *domain;
4400         MonoClass *nested;
4401         MonoType *type;
4402         gpointer iter;
4403         guint8 b;
4404         int err, nnested;
4405         char *name;
4406
4407         klass = decode_typeid (p, &p, end, &domain, &err);
4408         if (err)
4409                 return err;
4410
4411         switch (command) {
4412         case CMD_TYPE_GET_INFO: {
4413                 buffer_add_string (buf, klass->name_space);
4414                 buffer_add_string (buf, klass->name);
4415                 // FIXME: byref
4416                 name = mono_type_get_name_full (&klass->byval_arg, MONO_TYPE_NAME_FORMAT_FULL_NAME);
4417                 buffer_add_string (buf, name);
4418                 g_free (name);
4419                 buffer_add_assemblyid (buf, domain, klass->image->assembly);
4420                 buffer_add_moduleid (buf, domain, klass->image);
4421                 buffer_add_typeid (buf, domain, klass->parent);
4422                 if (klass->rank || klass->byval_arg.type == MONO_TYPE_PTR)
4423                         buffer_add_typeid (buf, domain, klass->element_class);
4424                 else
4425                         buffer_add_id (buf, 0);
4426                 buffer_add_int (buf, klass->type_token);
4427                 buffer_add_byte (buf, klass->rank);
4428                 buffer_add_int (buf, klass->flags);
4429                 b = 0;
4430                 type = &klass->byval_arg;
4431                 // FIXME: Can't decide whenever a class represents a byref type
4432                 if (FALSE)
4433                         b |= (1 << 0);
4434                 if (type->type == MONO_TYPE_PTR)
4435                         b |= (1 << 1);
4436                 if (!type->byref && (((type->type >= MONO_TYPE_BOOLEAN) && (type->type <= MONO_TYPE_R8)) || (type->type == MONO_TYPE_I) || (type->type == MONO_TYPE_U)))
4437                         b |= (1 << 2);
4438                 if (type->type == MONO_TYPE_VALUETYPE)
4439                         b |= (1 << 3);
4440                 buffer_add_byte (buf, b);
4441                 nnested = 0;
4442                 iter = NULL;
4443                 while ((nested = mono_class_get_nested_types (klass, &iter)))
4444                         nnested ++;
4445                 buffer_add_int (buf, nnested);
4446                 iter = NULL;
4447                 while ((nested = mono_class_get_nested_types (klass, &iter)))
4448                         buffer_add_typeid (buf, domain, nested);
4449                 break;
4450         }
4451         case CMD_TYPE_GET_METHODS: {
4452                 int nmethods;
4453                 int i = 0;
4454                 gpointer iter = NULL;
4455                 MonoMethod *m;
4456
4457                 nmethods = mono_class_num_methods (klass);
4458
4459                 buffer_add_int (buf, nmethods);
4460
4461                 while ((m = mono_class_get_methods (klass, &iter))) {
4462                         buffer_add_methodid (buf, domain, m);
4463                         i ++;
4464                 }
4465                 g_assert (i == nmethods);
4466                 break;
4467         }
4468         case CMD_TYPE_GET_FIELDS: {
4469                 int nfields;
4470                 int i = 0;
4471                 gpointer iter = NULL;
4472                 MonoClassField *f;
4473
4474                 nfields = mono_class_num_fields (klass);
4475
4476                 buffer_add_int (buf, nfields);
4477
4478                 while ((f = mono_class_get_fields (klass, &iter))) {
4479                         buffer_add_fieldid (buf, domain, f);
4480                         buffer_add_string (buf, f->name);
4481                         buffer_add_typeid (buf, domain, mono_class_from_mono_type (f->type));
4482                         buffer_add_int (buf, f->type->attrs);
4483                         i ++;
4484                 }
4485                 g_assert (i == nfields);
4486                 break;
4487         }
4488         case CMD_TYPE_GET_PROPERTIES: {
4489                 int nprops;
4490                 int i = 0;
4491                 gpointer iter = NULL;
4492                 MonoProperty *p;
4493
4494                 nprops = mono_class_num_properties (klass);
4495
4496                 buffer_add_int (buf, nprops);
4497
4498                 while ((p = mono_class_get_properties (klass, &iter))) {
4499                         buffer_add_propertyid (buf, domain, p);
4500                         buffer_add_string (buf, p->name);
4501                         buffer_add_methodid (buf, domain, p->get);
4502                         buffer_add_methodid (buf, domain, p->set);
4503                         buffer_add_int (buf, p->attrs);
4504                         i ++;
4505                 }
4506                 g_assert (i == nprops);
4507                 break;
4508         }
4509         case CMD_TYPE_GET_CATTRS: {
4510                 MonoClass *attr_klass = decode_typeid (p, &p, end, NULL, &err);
4511                 MonoCustomAttrInfo *cinfo;
4512
4513                 cinfo = mono_custom_attrs_from_class (klass);
4514
4515                 buffer_add_cattrs (buf, domain, klass->image, attr_klass, cinfo);
4516                 break;
4517         }
4518         case CMD_TYPE_GET_FIELD_CATTRS: {
4519                 MonoClass *attr_klass;
4520                 MonoCustomAttrInfo *cinfo;
4521                 MonoClassField *field;
4522
4523                 field = decode_fieldid (p, &p, end, NULL, &err);
4524                 if (err)
4525                         return err;
4526                 attr_klass = decode_typeid (p, &p, end, NULL, &err);
4527                 if (err)
4528                         return err;
4529
4530                 cinfo = mono_custom_attrs_from_field (klass, field);
4531
4532                 buffer_add_cattrs (buf, domain, klass->image, attr_klass, cinfo);
4533                 break;
4534         }
4535         case CMD_TYPE_GET_PROPERTY_CATTRS: {
4536                 MonoClass *attr_klass;
4537                 MonoCustomAttrInfo *cinfo;
4538                 MonoProperty *prop;
4539
4540                 prop = decode_propertyid (p, &p, end, NULL, &err);
4541                 if (err)
4542                         return err;
4543                 attr_klass = decode_typeid (p, &p, end, NULL, &err);
4544                 if (err)
4545                         return err;
4546
4547                 cinfo = mono_custom_attrs_from_property (klass, prop);
4548
4549                 buffer_add_cattrs (buf, domain, klass->image, attr_klass, cinfo);
4550                 break;
4551         }
4552         case CMD_TYPE_GET_VALUES: {
4553                 guint8 *val;
4554                 MonoClassField *f;
4555                 MonoVTable *vtable;
4556                 MonoClass *k;
4557                 int len, i;
4558                 gboolean found;
4559
4560                 len = decode_int (p, &p, end);
4561                 for (i = 0; i < len; ++i) {
4562                         f = decode_fieldid (p, &p, end, NULL, &err);
4563                         if (err)
4564                                 return err;
4565
4566                         if (!(f->type->attrs & FIELD_ATTRIBUTE_STATIC))
4567                                 return ERR_INVALID_FIELDID;
4568                         if (mono_class_field_is_special_static (f))
4569                                 return ERR_INVALID_FIELDID;
4570
4571                         /* Check that the field belongs to the object */
4572                         found = FALSE;
4573                         for (k = klass; k; k = k->parent) {
4574                                 if (k == f->parent) {
4575                                         found = TRUE;
4576                                         break;
4577                                 }
4578                         }
4579                         if (!found)
4580                                 return ERR_INVALID_FIELDID;
4581
4582                         vtable = mono_class_vtable (domain, f->parent);
4583                         val = g_malloc (mono_class_instance_size (mono_class_from_mono_type (f->type)));
4584                         mono_field_static_get_value (vtable, f, val);
4585                         buffer_add_value (buf, f->type, val, domain);
4586                         g_free (val);
4587                 }
4588                 break;
4589         }
4590         case CMD_TYPE_SET_VALUES: {
4591                 guint8 *val;
4592                 MonoClassField *f;
4593                 MonoVTable *vtable;
4594                 MonoClass *k;
4595                 int len, i;
4596                 gboolean found;
4597
4598                 len = decode_int (p, &p, end);
4599                 for (i = 0; i < len; ++i) {
4600                         f = decode_fieldid (p, &p, end, NULL, &err);
4601                         if (err)
4602                                 return err;
4603
4604                         if (!(f->type->attrs & FIELD_ATTRIBUTE_STATIC))
4605                                 return ERR_INVALID_FIELDID;
4606                         if (mono_class_field_is_special_static (f))
4607                                 return ERR_INVALID_FIELDID;
4608
4609                         /* Check that the field belongs to the object */
4610                         found = FALSE;
4611                         for (k = klass; k; k = k->parent) {
4612                                 if (k == f->parent) {
4613                                         found = TRUE;
4614                                         break;
4615                                 }
4616                         }
4617                         if (!found)
4618                                 return ERR_INVALID_FIELDID;
4619
4620                         // FIXME: Check for literal/const
4621
4622                         vtable = mono_class_vtable (domain, f->parent);
4623                         val = g_malloc (mono_class_instance_size (mono_class_from_mono_type (f->type)));
4624                         err = decode_value (f->type, domain, val, p, &p, end);
4625                         if (err) {
4626                                 g_free (val);
4627                                 return err;
4628                         }
4629                         mono_field_static_set_value (vtable, f, val);
4630                         g_free (val);
4631                 }
4632                 break;
4633         }
4634         case CMD_TYPE_GET_OBJECT: {
4635                 MonoObject *o = (MonoObject*)mono_type_get_object (mono_domain_get (), &klass->byval_arg);
4636                 buffer_add_objid (buf, o);
4637                 break;
4638         }
4639         case CMD_TYPE_GET_SOURCE_FILES: {
4640                 gpointer iter = NULL;
4641                 MonoMethod *method;
4642                 char *source_file, *base;
4643                 GPtrArray *files;
4644                 int i;
4645
4646                 files = g_ptr_array_new ();
4647
4648                 while ((method = mono_class_get_methods (klass, &iter))) {
4649                         MonoDebugMethodInfo *minfo = mono_debug_lookup_method (method);
4650
4651                         if (minfo) {
4652                                 mono_debug_symfile_get_line_numbers (minfo, &source_file, NULL, NULL, NULL);
4653
4654                                 for (i = 0; i < files->len; ++i)
4655                                         if (!strcmp (g_ptr_array_index (files, i), source_file))
4656                                                 break;
4657                                 if (i == files->len)
4658                                         g_ptr_array_add (files, g_strdup (source_file));
4659                                 g_free (source_file);
4660                         }
4661                 }
4662
4663                 buffer_add_int (buf, files->len);
4664                 for (i = 0; i < files->len; ++i) {
4665                         source_file = g_ptr_array_index (files, i);
4666                         base = g_path_get_basename (source_file);
4667                         buffer_add_string (buf, base);
4668                         g_free (base);
4669                         g_free (source_file);
4670                 }
4671                 g_ptr_array_free (files, TRUE);
4672                 break;
4673         }
4674         case CMD_TYPE_IS_ASSIGNABLE_FROM: {
4675                 MonoClass *oklass = decode_typeid (p, &p, end, NULL, &err);
4676
4677                 if (err)
4678                         return err;
4679                 if (mono_class_is_assignable_from (klass, oklass))
4680                         buffer_add_byte (buf, 1);
4681                 else
4682                         buffer_add_byte (buf, 0);
4683                 break;
4684         }
4685         default:
4686                 return ERR_NOT_IMPLEMENTED;
4687         }
4688
4689         return ERR_NONE;
4690 }
4691
4692 static ErrorCode
4693 method_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4694 {
4695         int err;
4696         MonoDomain *domain;
4697         MonoMethod *method;
4698         MonoMethodHeader *header;
4699
4700         method = decode_methodid (p, &p, end, &domain, &err);
4701         if (err)
4702                 return err;
4703
4704         switch (command) {
4705         case CMD_METHOD_GET_NAME: {
4706                 buffer_add_string (buf, method->name);
4707                 break;
4708         }
4709         case CMD_METHOD_GET_DECLARING_TYPE: {
4710                 buffer_add_typeid (buf, domain, method->klass);
4711                 break;
4712         }
4713         case CMD_METHOD_GET_DEBUG_INFO: {
4714                 MonoDebugMethodInfo *minfo;
4715                 char *source_file;
4716                 int i, n_il_offsets;
4717                 int *il_offsets;
4718                 int *line_numbers;
4719
4720                 header = mono_method_get_header (method);
4721                 if (!header) {
4722                         buffer_add_int (buf, 0);
4723                         buffer_add_string (buf, "");
4724                         buffer_add_int (buf, 0);
4725                         break;
4726                 }
4727
4728                 minfo = mono_debug_lookup_method (method);
4729                 if (!minfo) {
4730                         buffer_add_int (buf, header->code_size);
4731                         buffer_add_string (buf, "");
4732                         buffer_add_int (buf, 0);
4733                         break;
4734                 }
4735
4736                 mono_debug_symfile_get_line_numbers (minfo, &source_file, &n_il_offsets, &il_offsets, &line_numbers);
4737                 buffer_add_int (buf, header->code_size);
4738                 buffer_add_string (buf, source_file);
4739                 buffer_add_int (buf, n_il_offsets);
4740                 //printf ("Line number table for method %s:\n", mono_method_full_name (method,  TRUE));
4741                 for (i = 0; i < n_il_offsets; ++i) {
4742                         //printf ("IL%d -> %d\n", il_offsets [i], line_numbers [i]);
4743                         buffer_add_int (buf, il_offsets [i]);
4744                         buffer_add_int (buf, line_numbers [i]);
4745                 }
4746                 g_free (source_file);
4747                 g_free (il_offsets);
4748                 g_free (line_numbers);
4749                 break;
4750         }
4751         case CMD_METHOD_GET_PARAM_INFO: {
4752                 MonoMethodSignature *sig = mono_method_signature (method);
4753                 guint32 i;
4754                 char **names;
4755
4756                 /* FIXME: mono_class_from_mono_type () and byrefs */
4757
4758                 /* FIXME: Use a smaller encoding */
4759                 buffer_add_int (buf, sig->call_convention);
4760                 buffer_add_int (buf, sig->param_count);
4761                 buffer_add_int (buf, sig->generic_param_count);
4762                 buffer_add_typeid (buf, domain, mono_class_from_mono_type (sig->ret));
4763                 for (i = 0; i < sig->param_count; ++i) {
4764                         /* FIXME: vararg */
4765                         buffer_add_typeid (buf, domain, mono_class_from_mono_type (sig->params [i]));
4766                 }
4767
4768                 /* Emit parameter names */
4769                 names = g_new (char *, sig->param_count);
4770                 mono_method_get_param_names (method, (const char **) names);
4771                 for (i = 0; i < sig->param_count; ++i)
4772                         buffer_add_string (buf, names [i]);
4773                 g_free (names);
4774
4775                 break;
4776         }
4777         case CMD_METHOD_GET_LOCALS_INFO: {
4778                 int i, j, num_locals;
4779                 char **local_names;
4780                 int *local_indexes;
4781
4782                 header = mono_method_get_header (method);
4783                 g_assert (header);
4784
4785                 buffer_add_int (buf, header->num_locals);
4786
4787                 /* Types */
4788                 for (i = 0; i < header->num_locals; ++i)
4789                         buffer_add_typeid (buf, domain, mono_class_from_mono_type (header->locals [i]));
4790
4791                 /* Names */
4792                 num_locals = mono_debug_lookup_locals (method, &local_names, &local_indexes);
4793                 for (i = 0; i < header->num_locals; ++i) {
4794                         for (j = 0; j < num_locals; ++j)
4795                                 if (local_indexes [j] == i)
4796                                         break;
4797                         if (j < num_locals)
4798                                 buffer_add_string (buf, local_names [j]);
4799                         else
4800                                 buffer_add_string (buf, "");
4801                 }
4802                 g_free (local_names);
4803                 g_free (local_indexes);
4804
4805                 /* Live ranges */
4806                 /* FIXME: This works because we set debug_options.mdb_optimizations */
4807                 for (i = 0; i < header->num_locals; ++i) {
4808                         buffer_add_int (buf, 0);
4809                         buffer_add_int (buf, header->code_size);
4810                 }
4811
4812                 break;
4813         }
4814         case CMD_METHOD_GET_INFO:
4815                 buffer_add_int (buf, method->flags);
4816                 buffer_add_int (buf, method->iflags);
4817                 buffer_add_int (buf, method->token);
4818                 break;
4819         case CMD_METHOD_GET_BODY: {
4820                 int i;
4821
4822                 header = mono_method_get_header (method);
4823                 if (!header) {
4824                         buffer_add_int (buf, 0);
4825                 } else {
4826                         buffer_add_int (buf, header->code_size);
4827                         for (i = 0; i < header->code_size; ++i)
4828                                 buffer_add_byte (buf, header->code [i]);
4829                 }
4830                 break;
4831         }
4832         case CMD_METHOD_RESOLVE_TOKEN: {
4833                 guint32 token = decode_int (p, &p, end);
4834
4835                 // FIXME: Generics
4836                 switch (mono_metadata_token_code (token)) {
4837                 case MONO_TOKEN_STRING: {
4838                         MonoString *s;
4839                         char *s2;
4840
4841                         s = mono_ldstr (domain, method->klass->image, mono_metadata_token_index (token));
4842                         g_assert (s);
4843
4844                         s2 = mono_string_to_utf8 (s);
4845
4846                         buffer_add_byte (buf, TOKEN_TYPE_STRING);
4847                         buffer_add_string (buf, s2);
4848                         g_free (s2);
4849                         break;
4850                 }
4851                 default: {
4852                         gpointer val;
4853                         MonoClass *handle_class;
4854
4855                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
4856                                 val = mono_method_get_wrapper_data (method, token);
4857                                 handle_class = mono_method_get_wrapper_data (method, token + 1);
4858
4859                                 if (handle_class == NULL) {
4860                                         // Can't figure out the token type
4861                                         buffer_add_byte (buf, TOKEN_TYPE_UNKNOWN);
4862                                         break;
4863                                 }
4864                         } else {
4865                                 val = mono_ldtoken (method->klass->image, token, &handle_class, NULL);
4866                                 g_assert (val);
4867                         }
4868
4869                         if (handle_class == mono_defaults.typehandle_class) {
4870                                 buffer_add_byte (buf, TOKEN_TYPE_TYPE);
4871                                 buffer_add_typeid (buf, domain, mono_class_from_mono_type ((MonoType*)val));
4872                         } else if (handle_class == mono_defaults.fieldhandle_class) {
4873                                 buffer_add_byte (buf, TOKEN_TYPE_FIELD);
4874                                 buffer_add_fieldid (buf, domain, val);
4875                         } else if (handle_class == mono_defaults.methodhandle_class) {
4876                                 buffer_add_byte (buf, TOKEN_TYPE_METHOD);
4877                                 buffer_add_methodid (buf, domain, val);
4878                         } else if (handle_class == mono_defaults.string_class) {
4879                                 char *s;
4880
4881                                 s = mono_string_to_utf8 (val);
4882                                 buffer_add_byte (buf, TOKEN_TYPE_STRING);
4883                                 buffer_add_string (buf, s);
4884                                 g_free (s);
4885                         } else {
4886                                 g_assert_not_reached ();
4887                         }
4888                         break;
4889                 }
4890                 }
4891                 break;
4892         }
4893         default:
4894                 return ERR_NOT_IMPLEMENTED;
4895         }
4896
4897         return ERR_NONE;
4898 }
4899
4900 static ErrorCode
4901 thread_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4902 {
4903         int objid = decode_objid (p, &p, end);
4904         int err;
4905         MonoThread *thread_obj;
4906         MonoInternalThread *thread;
4907
4908         err = get_object (objid, (MonoObject**)&thread_obj);
4909         if (err)
4910                 return err;
4911
4912         thread = THREAD_TO_INTERNAL (thread_obj);
4913
4914         switch (command) {
4915         case CMD_THREAD_GET_NAME: {
4916                 guint32 name_len;
4917                 gunichar2 *s = mono_thread_get_name (thread, &name_len);
4918
4919                 if (!s) {
4920                         buffer_add_int (buf, 0);
4921                 } else {
4922                         char *name;
4923                         glong len;
4924
4925                         name = g_utf16_to_utf8 (s, name_len, NULL, &len, NULL);
4926                         g_assert (name);
4927                         buffer_add_int (buf, len);
4928                         buffer_add_data (buf, (guint8*)name, len);
4929                         g_free (s);
4930                 }
4931                 break;
4932         }
4933         case CMD_THREAD_GET_FRAME_INFO: {
4934                 DebuggerTlsData *tls;
4935                 int i, start_frame, length;
4936
4937                 // Wait for suspending if it already started
4938                 if (suspend_count)
4939                         wait_for_suspend ();
4940                 if (!is_suspended ())
4941                         return ERR_NOT_SUSPENDED;
4942
4943                 start_frame = decode_int (p, &p, end);
4944                 length = decode_int (p, &p, end);
4945
4946                 if (start_frame != 0 || length != -1)
4947                         return ERR_NOT_IMPLEMENTED;
4948
4949                 mono_loader_lock ();
4950                 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
4951                 mono_loader_unlock ();
4952                 g_assert (tls);
4953
4954                 compute_frame_info (thread, tls);
4955
4956                 buffer_add_int (buf, tls->frame_count);
4957                 for (i = 0; i < tls->frame_count; ++i) {
4958                         buffer_add_int (buf, tls->frames [i]->id);
4959                         buffer_add_methodid (buf, tls->frames [i]->domain, tls->frames [i]->method);
4960                         buffer_add_int (buf, tls->frames [i]->il_offset);
4961                         /*
4962                          * Instead of passing the frame type directly to the client, we associate
4963                          * it with the previous frame using a set of flags. This avoids lots of
4964                          * conditional code in the client, since a frame whose type isn't
4965                          * FRAME_TYPE_MANAGED has no method, location, etc.
4966                          */
4967                         buffer_add_byte (buf, tls->frames [i]->flags);
4968                 }
4969
4970                 break;
4971         }
4972         case CMD_THREAD_GET_STATE:
4973                 buffer_add_int (buf, thread->state);
4974                 break;
4975         case CMD_THREAD_GET_INFO:
4976                 buffer_add_byte (buf, thread->threadpool_thread);
4977                 break;
4978         default:
4979                 return ERR_NOT_IMPLEMENTED;
4980         }
4981
4982         return ERR_NONE;
4983 }
4984
4985 static ErrorCode
4986 frame_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4987 {
4988         int objid;
4989         int err;
4990         MonoThread *thread_obj;
4991         MonoInternalThread *thread;
4992         int pos, i, len;
4993         DebuggerTlsData *tls;
4994         StackFrame *frame;
4995         MonoDebugMethodJitInfo *jit;
4996         MonoDebugVarInfo *var;
4997         MonoMethodSignature *sig;
4998         gssize id;
4999         MonoMethodHeader *header;
5000
5001         objid = decode_objid (p, &p, end);
5002         err = get_object (objid, (MonoObject**)&thread_obj);
5003         if (err)
5004                 return err;
5005
5006         thread = THREAD_TO_INTERNAL (thread_obj);
5007
5008         id = decode_id (p, &p, end);
5009
5010         mono_loader_lock ();
5011         tls = mono_g_hash_table_lookup (thread_to_tls, thread);
5012         mono_loader_unlock ();
5013         g_assert (tls);
5014
5015         for (i = 0; i < tls->frame_count; ++i) {
5016                 if (tls->frames [i]->id == id)
5017                         break;
5018         }
5019         if (i == tls->frame_count)
5020                 return ERR_INVALID_FRAMEID;
5021
5022         frame = tls->frames [i];
5023
5024         if (!frame->jit) {
5025                 frame->jit = mono_debug_find_method (frame->method, frame->domain);
5026                 g_assert (frame->jit);
5027         }
5028         jit = frame->jit;
5029
5030         sig = mono_method_signature (frame->method);
5031
5032         switch (command) {
5033         case CMD_STACK_FRAME_GET_VALUES: {
5034                 len = decode_int (p, &p, end);
5035                 header = mono_method_get_header (frame->method);
5036
5037                 for (i = 0; i < len; ++i) {
5038                         pos = decode_int (p, &p, end);
5039
5040                         if (pos < 0) {
5041                                 pos = - pos - 1;
5042
5043                                 g_assert (pos >= 0 && pos < jit->num_params);
5044
5045                                 var = &jit->params [pos];
5046
5047                                 add_var (buf, sig->params [pos], &jit->params [pos], &frame->ctx, frame->domain);
5048                         } else {
5049                                 g_assert (pos >= 0 && pos < jit->num_locals);
5050
5051                                 var = &jit->locals [pos];
5052
5053                                 add_var (buf, header->locals [pos], &jit->locals [pos], &frame->ctx, frame->domain);
5054                         }
5055                 }
5056                 break;
5057         }
5058         case CMD_STACK_FRAME_GET_THIS: {
5059                 if (frame->method->klass->valuetype) {
5060                         if (!sig->hasthis) {
5061                                 MonoObject *p = NULL;
5062                                 buffer_add_value (buf, &mono_defaults.object_class->byval_arg, &p, frame->domain);
5063                         } else {
5064                                 add_var (buf, &frame->method->klass->this_arg, jit->this_var, &frame->ctx, frame->domain);
5065                         }
5066                 } else {
5067                         if (!sig->hasthis) {
5068                                 MonoObject *p = NULL;
5069                                 buffer_add_value (buf, &frame->method->klass->byval_arg, &p, frame->domain);
5070                         } else {
5071                                 add_var (buf, &frame->method->klass->byval_arg, jit->this_var, &frame->ctx, frame->domain);
5072                         }
5073                 }
5074                 break;
5075         }
5076         case CMD_STACK_FRAME_SET_VALUES: {
5077                 guint8 *val_buf;
5078                 MonoType *t;
5079                 MonoDebugVarInfo *var;
5080
5081                 len = decode_int (p, &p, end);
5082                 header = mono_method_get_header (frame->method);
5083
5084                 for (i = 0; i < len; ++i) {
5085                         pos = decode_int (p, &p, end);
5086
5087                         if (pos < 0) {
5088                                 pos = - pos - 1;
5089
5090                                 g_assert (pos >= 0 && pos < jit->num_params);
5091
5092                                 t = sig->params [pos];
5093                                 var = &jit->params [pos];
5094                         } else {
5095                                 g_assert (pos >= 0 && pos < jit->num_locals);
5096
5097                                 t = header->locals [pos];
5098                                 var = &jit->locals [pos];
5099                         }
5100
5101                         if (MONO_TYPE_IS_REFERENCE (t))
5102                                 val_buf = g_alloca (sizeof (MonoObject*));
5103                         else
5104                                 val_buf = g_alloca (mono_class_instance_size (mono_class_from_mono_type (t)));
5105                         err = decode_value (t, frame->domain, val_buf, p, &p, end);
5106                         if (err)
5107                                 return err;
5108
5109                         set_var (t, var, &frame->ctx, frame->domain, val_buf);
5110                 }
5111                 break;
5112         }
5113         default:
5114                 return ERR_NOT_IMPLEMENTED;
5115         }
5116
5117         return ERR_NONE;
5118 }
5119
5120 static ErrorCode
5121 array_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5122 {
5123         MonoArray *arr;
5124         int objid, err, index, len, i, esize;
5125         gpointer elem;
5126
5127         objid = decode_objid (p, &p, end);
5128         err = get_object (objid, (MonoObject**)&arr);
5129         if (err)
5130                 return err;
5131
5132         switch (command) {
5133         case CMD_ARRAY_REF_GET_LENGTH:
5134                 buffer_add_int (buf, arr->obj.vtable->klass->rank);
5135                 if (!arr->bounds) {
5136                         buffer_add_int (buf, arr->max_length);
5137                         buffer_add_int (buf, 0);
5138                 } else {
5139                         for (i = 0; i < arr->obj.vtable->klass->rank; ++i) {
5140                                 buffer_add_int (buf, arr->bounds [i].length);
5141                                 buffer_add_int (buf, arr->bounds [i].lower_bound);
5142                         }
5143                 }
5144                 break;
5145         case CMD_ARRAY_REF_GET_VALUES:
5146                 index = decode_int (p, &p, end);
5147                 len = decode_int (p, &p, end);
5148
5149                 g_assert (index >= 0 && len >= 0);
5150                 // Reordered to avoid integer overflow
5151                 g_assert (!(index > arr->max_length - len));
5152
5153                 esize = mono_array_element_size (arr->obj.vtable->klass);
5154                 for (i = index; i < index + len; ++i) {
5155                         elem = (gpointer*)((char*)arr->vector + (i * esize));
5156                         buffer_add_value (buf, &arr->obj.vtable->klass->element_class->byval_arg, elem, arr->obj.vtable->domain);
5157                 }
5158                 break;
5159         case CMD_ARRAY_REF_SET_VALUES:
5160                 index = decode_int (p, &p, end);
5161                 len = decode_int (p, &p, end);
5162
5163                 g_assert (index >= 0 && len >= 0);
5164                 // Reordered to avoid integer overflow
5165                 g_assert (!(index > arr->max_length - len));
5166
5167                 esize = mono_array_element_size (arr->obj.vtable->klass);
5168                 for (i = index; i < index + len; ++i) {
5169                         elem = (gpointer*)((char*)arr->vector + (i * esize));
5170
5171                         decode_value (&arr->obj.vtable->klass->element_class->byval_arg, arr->obj.vtable->domain, elem, p, &p, end);
5172                 }
5173                 break;
5174         default:
5175                 return ERR_NOT_IMPLEMENTED;
5176         }
5177
5178         return ERR_NONE;
5179 }
5180
5181 static ErrorCode
5182 string_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5183 {
5184         int objid, err;
5185         MonoString *str;
5186         char *s;
5187
5188         objid = decode_objid (p, &p, end);
5189         err = get_object (objid, (MonoObject**)&str);
5190         if (err)
5191                 return err;
5192
5193         switch (command) {
5194         case CMD_STRING_REF_GET_VALUE:
5195                 s = mono_string_to_utf8 (str);
5196                 buffer_add_string (buf, s);
5197                 g_free (s);
5198                 break;
5199         default:
5200                 return ERR_NOT_IMPLEMENTED;
5201         }
5202
5203         return ERR_NONE;
5204 }
5205
5206 static ErrorCode
5207 object_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5208 {
5209         int objid, err;
5210         MonoObject *obj;
5211         int len, i;
5212         MonoClassField *f;
5213         MonoClass *k;
5214         gboolean found;
5215
5216         if (command == CMD_OBJECT_REF_IS_COLLECTED) {
5217                 objid = decode_objid (p, &p, end);
5218                 err = get_object (objid, &obj);
5219                 if (err)
5220                         buffer_add_int (buf, 1);
5221                 else
5222                         buffer_add_int (buf, 0);
5223                 return 0;
5224         }
5225
5226         objid = decode_objid (p, &p, end);
5227         err = get_object (objid, &obj);
5228         if (err)
5229                 return err;
5230
5231         switch (command) {
5232         case CMD_OBJECT_REF_GET_TYPE:
5233                 buffer_add_typeid (buf, obj->vtable->domain, obj->vtable->klass);
5234                 break;
5235         case CMD_OBJECT_REF_GET_VALUES:
5236                 len = decode_int (p, &p, end);
5237
5238                 for (i = 0; i < len; ++i) {
5239                         MonoClassField *f = decode_fieldid (p, &p, end, NULL, &err);
5240                         if (err)
5241                                 return err;
5242
5243                         /* Check that the field belongs to the object */
5244                         found = FALSE;
5245                         for (k = obj->vtable->klass; k; k = k->parent) {
5246                                 if (k == f->parent) {
5247                                         found = TRUE;
5248                                         break;
5249                                 }
5250                         }
5251                         if (!found)
5252                                 return ERR_INVALID_FIELDID;
5253
5254                         if (f->type->attrs & FIELD_ATTRIBUTE_STATIC) {
5255                                 guint8 *val;
5256                                 MonoVTable *vtable;
5257
5258                                 if (mono_class_field_is_special_static (f))
5259                                         return ERR_INVALID_FIELDID;
5260
5261                                 g_assert (f->type->attrs & FIELD_ATTRIBUTE_STATIC);
5262                                 vtable = mono_class_vtable (obj->vtable->domain, f->parent);
5263                                 val = g_malloc (mono_class_instance_size (mono_class_from_mono_type (f->type)));
5264                                 mono_field_static_get_value (vtable, f, val);
5265                                 buffer_add_value (buf, f->type, val, obj->vtable->domain);
5266                                 g_free (val);
5267                         } else {
5268                                 buffer_add_value (buf, f->type, (guint8*)obj + f->offset, obj->vtable->domain);
5269                         }
5270                 }
5271                 break;
5272         case CMD_OBJECT_REF_SET_VALUES:
5273                 len = decode_int (p, &p, end);
5274
5275                 for (i = 0; i < len; ++i) {
5276                         f = decode_fieldid (p, &p, end, NULL, &err);
5277                         if (err)
5278                                 return err;
5279
5280                         /* Check that the field belongs to the object */
5281                         found = FALSE;
5282                         for (k = obj->vtable->klass; k; k = k->parent) {
5283                                 if (k == f->parent) {
5284                                         found = TRUE;
5285                                         break;
5286                                 }
5287                         }
5288                         if (!found)
5289                                 return ERR_INVALID_FIELDID;
5290
5291                         if (f->type->attrs & FIELD_ATTRIBUTE_STATIC) {
5292                                 guint8 *val;
5293                                 MonoVTable *vtable;
5294
5295                                 if (mono_class_field_is_special_static (f))
5296                                         return ERR_INVALID_FIELDID;
5297
5298                                 g_assert (f->type->attrs & FIELD_ATTRIBUTE_STATIC);
5299                                 vtable = mono_class_vtable (obj->vtable->domain, f->parent);
5300
5301                                 val = g_malloc (mono_class_instance_size (mono_class_from_mono_type (f->type)));
5302                                 err = decode_value (f->type, obj->vtable->domain, val, p, &p, end);
5303                                 if (err) {
5304                                         g_free (val);
5305                                         return err;
5306                                 }
5307                                 mono_field_static_set_value (vtable, f, val);
5308                                 g_free (val);
5309                         } else {
5310                                 err = decode_value (f->type, obj->vtable->domain, (guint8*)obj + f->offset, p, &p, end);
5311                                 if (err)
5312                                         return err;
5313                         }
5314                 }
5315                 break;
5316         case CMD_OBJECT_REF_GET_ADDRESS:
5317                 buffer_add_long (buf, (gssize)obj);
5318                 break;
5319         case CMD_OBJECT_REF_GET_DOMAIN:
5320                 buffer_add_domainid (buf, obj->vtable->domain);
5321                 break;
5322         default:
5323                 return ERR_NOT_IMPLEMENTED;
5324         }
5325
5326         return ERR_NONE;
5327 }
5328
5329 static const char*
5330 command_set_to_string (CommandSet command_set)
5331 {
5332         switch (command_set) {
5333         case CMD_SET_VM:
5334                 return "VM";
5335         case CMD_SET_OBJECT_REF:
5336                 return "OBJECT_REF";
5337         case CMD_SET_STRING_REF:
5338                 return "STRING_REF";
5339         case CMD_SET_THREAD:
5340                 return "THREAD";
5341         case CMD_SET_ARRAY_REF:
5342                 return "ARRAY_REF";
5343         case CMD_SET_EVENT_REQUEST:
5344                 return "EVENT_REQUEST";
5345         case CMD_SET_STACK_FRAME:
5346                 return "STACK_FRAME";
5347         case CMD_SET_APPDOMAIN:
5348                 return "APPDOMAIN";
5349         case CMD_SET_ASSEMBLY:
5350                 return "ASSEMBLY";
5351         case CMD_SET_METHOD:
5352                 return "METHOD";
5353         case CMD_SET_TYPE:
5354                 return "TYPE";
5355         case CMD_SET_MODULE:
5356                 return "MODULE";
5357         case CMD_SET_EVENT:
5358                 return "EVENT";
5359         default:
5360                 return "";
5361         }
5362 }
5363
5364 /*
5365  * debugger_thread:
5366  *
5367  *   This thread handles communication with the debugger client using a JDWP
5368  * like protocol.
5369  */
5370 static guint32 WINAPI
5371 debugger_thread (void *arg)
5372 {
5373         int res, len, id, flags, command_set, command;
5374         guint8 header [HEADER_LENGTH];
5375         guint8 *data, *p, *end;
5376         Buffer buf;
5377         ErrorCode err;
5378         gboolean no_reply;
5379
5380         DEBUG (1, fprintf (log_file, "[dbg] Agent thread started, pid=%p\n", (gpointer)GetCurrentThreadId ()));
5381
5382         debugger_thread_id = GetCurrentThreadId ();
5383
5384         mono_jit_thread_attach (mono_get_root_domain ());
5385
5386         mono_thread_internal_current ()->flags |= MONO_THREAD_FLAG_DONT_MANAGE;
5387
5388         mono_set_is_debugger_attached (TRUE);
5389
5390         while (TRUE) {
5391                 res = read (conn_fd, header, HEADER_LENGTH);
5392
5393                 /* This will break if the socket is closed during shutdown too */
5394                 if (res != HEADER_LENGTH)
5395                         break;
5396
5397                 p = header;
5398                 end = header + HEADER_LENGTH;
5399
5400                 len = decode_int (p, &p, end);
5401                 id = decode_int (p, &p, end);
5402                 flags = decode_byte (p, &p, end);
5403                 command_set = decode_byte (p, &p, end);
5404                 command = decode_byte (p, &p, end);
5405
5406                 g_assert (flags == 0);
5407
5408                 DEBUG (1, fprintf (log_file, "[dbg] Received command %s(%d), id=%d.\n", command_set_to_string (command_set), command, id));
5409
5410                 data = g_malloc (len - HEADER_LENGTH);
5411                 res = read (conn_fd, data, len - HEADER_LENGTH);
5412                 if (res != len - HEADER_LENGTH)
5413                         break;
5414
5415                 p = data;
5416                 end = data + (len - HEADER_LENGTH);
5417
5418                 buffer_init (&buf, 128);
5419
5420                 err = ERR_NONE;
5421                 no_reply = FALSE;
5422
5423                 /* Process the request */
5424                 switch (command_set) {
5425                 case CMD_SET_VM:
5426                         err = vm_commands (command, id, p, end, &buf);
5427                         if (!err && command == CMD_VM_INVOKE_METHOD)
5428                                 /* Sent after the invoke is complete */
5429                                 no_reply = TRUE;
5430                         break;
5431                 case CMD_SET_EVENT_REQUEST:
5432                         err = event_commands (command, p, end, &buf);
5433                         break;
5434                 case CMD_SET_APPDOMAIN:
5435                         err = domain_commands (command, p, end, &buf);
5436                         break;
5437                 case CMD_SET_ASSEMBLY:
5438                         err = assembly_commands (command, p, end, &buf);
5439                         break;
5440                 case CMD_SET_MODULE:
5441                         err = module_commands (command, p, end, &buf);
5442                         break;
5443                 case CMD_SET_TYPE:
5444                         err = type_commands (command, p, end, &buf);
5445                         break;
5446                 case CMD_SET_METHOD:
5447                         err = method_commands (command, p, end, &buf);
5448                         break;
5449                 case CMD_SET_THREAD:
5450                         err = thread_commands (command, p, end, &buf);
5451                         break;
5452                 case CMD_SET_STACK_FRAME:
5453                         err = frame_commands (command, p, end, &buf);
5454                         break;
5455                 case CMD_SET_ARRAY_REF:
5456                         err = array_commands (command, p, end, &buf);
5457                         break;
5458                 case CMD_SET_STRING_REF:
5459                         err = string_commands (command, p, end, &buf);
5460                         break;
5461                 case CMD_SET_OBJECT_REF:
5462                         err = object_commands (command, p, end, &buf);
5463                         break;
5464                 default:
5465                         err = ERR_NOT_IMPLEMENTED;
5466                 }
5467
5468                 if (!no_reply)
5469                         send_reply_packet (id, err, &buf);
5470
5471                 g_free (data);
5472                 buffer_free (&buf);
5473
5474                 if (command_set == CMD_SET_VM && command == CMD_VM_DISPOSE)
5475                         break;
5476         }
5477
5478         mono_set_is_debugger_attached (FALSE);
5479
5480         mono_mutex_lock (&debugger_thread_exited_mutex);
5481         debugger_thread_exited = TRUE;
5482         mono_cond_signal (&debugger_thread_exited_cond);
5483         mono_mutex_unlock (&debugger_thread_exited_mutex);
5484
5485 #ifdef PLATFORM_WIN32
5486         shutdown (conn_fd, SD_BOTH);
5487 #else
5488         shutdown (conn_fd, SHUT_RDWR);
5489 #endif
5490
5491         return 0;
5492 }
5493
5494 #else /* DISABLE_DEBUGGER_AGENT */
5495
5496 void
5497 mono_debugger_agent_parse_options (char *options)
5498 {
5499         g_error ("This runtime is configure with the debugger agent disabled.");
5500 }
5501
5502 void
5503 mono_debugger_agent_init (void)
5504 {
5505 }
5506
5507 void
5508 mono_debugger_agent_cleanup (void)
5509 {
5510 }
5511
5512 void
5513 mono_debugger_agent_breakpoint_hit (void *sigctx)
5514 {
5515 }
5516
5517 void
5518 mono_debugger_agent_single_step_event (void *sigctx)
5519 {
5520 }
5521
5522 void
5523 mono_debugger_agent_free_domain_info (MonoDomain *domain)
5524 {
5525 }
5526
5527 gboolean mono_debugger_agent_thread_interrupt (MonoJitInfo *ji)
5528 {
5529 }
5530
5531 void
5532 mono_debugger_agent_handle_exception (MonoException *ext, MonoContext *ctx)
5533 {
5534 }
5535
5536 void
5537 mono_debugger_agent_handle_unhandled_exception (MonoException *exc, MonoContext *ctx)
5538 {
5539
5540 }
5541 #endif
5542