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2010-02-08 Zoltan Varga <vargaz@gmail.com>
[mono/afaerber.git] / mono / mini / debugger-agent.c
blobfb255c2badb9efc99333fbf60a8a42d73bffc09f
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 HOST_WIN32
44 #ifdef _MSC_VER
45 #include <winsock2.h>
46 #endif
47 #include <ws2tcpip.h>
48 #ifdef __GNUC__
49 /* cygwin's headers do not seem to define these */
50 void WSAAPI freeaddrinfo (struct addrinfo*);
51 int WSAAPI getaddrinfo (const char*,const char*,const struct addrinfo*,
52 struct addrinfo**);
53 int WSAAPI getnameinfo(const struct sockaddr*,socklen_t,char*,DWORD,
54 char*,DWORD,int);
55 #endif
56 #endif
57
58 #ifdef PLATFORM_ANDROID
59 #include <linux/in.h>
60 #include <linux/tcp.h>
61 #include <sys/endian.h>
62 #endif
63
64 #include <mono/metadata/mono-debug.h>
65 #include <mono/metadata/mono-debug-debugger.h>
66 #include <mono/metadata/debug-mono-symfile.h>
67 #include <mono/metadata/gc-internal.h>
68 #include <mono/metadata/threads-types.h>
69 #include <mono/metadata/socket-io.h>
70 #include <mono/utils/mono-semaphore.h>
71 #include "debugger-agent.h"
72 #include "mini.h"
73
74 #ifndef MONO_ARCH_SOFT_DEBUG_SUPPORTED
75 #define DISABLE_DEBUGGER_AGENT 1
76 #endif
77
78 #ifdef DISABLE_SOFT_DEBUG
79 #define DISABLE_DEBUGGER_AGENT 1
80 #endif
81
82 #ifndef DISABLE_DEBUGGER_AGENT
83 #include <mono/io-layer/mono-mutex.h>
84
85 /* Definitions to make backporting to 2.6 easier */
86 //#define MonoInternalThread MonoThread
87 //#define mono_thread_internal_current mono_thread_current
88 #define THREAD_TO_INTERNAL(thread) (thread)->internal_thread
89
90 typedef struct {
91 gboolean enabled;
92 char *transport;
93 char *address;
94 int log_level;
95 char *log_file;
96 gboolean suspend;
97 gboolean server;
98 gboolean onuncaught;
99 GSList *onthrow;
100 int timeout;
101 char *launch;
102 } AgentConfig;
103
104 typedef struct
105 {
106 int id;
107 guint32 il_offset;
108 MonoDomain *domain;
109 MonoMethod *method;
110 MonoContext ctx;
111 MonoDebugMethodJitInfo *jit;
112 int flags;
113 /*
114 * Whenever ctx is set. This is FALSE for the last frame of running threads, since
115 * the frame can become invalid.
116 */
117 gboolean has_ctx;
118 } StackFrame;
119
120 typedef struct
121 {
122 int id;
123 int flags;
124 guint8 *p;
125 guint8 *endp;
126 /* This is the context which needs to be restored after the invoke */
127 MonoContext ctx;
128 gboolean has_ctx;
129 /*
130 * If this is set, invoke this method with the arguments given by ARGS.
131 */
132 MonoMethod *method;
133 gpointer *args;
134 guint32 suspend_count;
135 } InvokeData;
136
137 typedef struct {
138 MonoContext ctx;
139 MonoLMF *lmf;
140 MonoDomain *domain;
141 gboolean has_context;
142 gpointer resume_event;
143 /* This is computed on demand when it is requested using the wire protocol */
144 /* It is freed up when the thread is resumed */
145 int frame_count;
146 StackFrame **frames;
147 /*
148 * Whenever the frame info is up-to-date. If not, compute_frame_info () will need to
149 * re-compute it.
150 */
151 gboolean frames_up_to_date;
152 /*
153 * Points to data about a pending invoke which needs to be executed after the thread
154 * resumes.
155 */
156 InvokeData *invoke;
157 /*
158 * Set to TRUE if this thread is suspended in suspend_current () or it is executing
159 * native code.
160 */
161 gboolean suspended;
162 /*
163 * Signals whenever the thread is in the process of suspending, i.e. it will suspend
164 * within a finite amount of time.
165 */
166 gboolean suspending;
167 /*
168 * Set to TRUE if this thread is suspended in suspend_current ().
169 */
170 gboolean really_suspended;
171 /* Used to pass the context to the breakpoint/single step handler */
172 MonoContext handler_ctx;
173 /* Whenever thread_stop () was called for this thread */
174 gboolean terminated;
175
176 /* Number of thread interruptions not yet processed */
177 gint32 interrupt_count;
178
179 /* Whenever to disable breakpoints (used during invokes) */
180 gboolean disable_breakpoints;
181
182 /*
183 * Number of times this thread has been resumed using resume_thread ().
184 */
185 guint32 resume_count;
186
187 MonoInternalThread *thread;
188
189 /*
190 * Information about the frame which transitioned to native code for running
191 * threads.
192 */
193 StackFrameInfo async_last_frame;
194
195 /*
196 * The context where the stack walk can be started for running threads.
197 */
198 MonoContext async_ctx;
199
200 gboolean has_async_ctx;
201
202 /*
203 * The lmf where the stack walk can be started for running threads.
204 */
205 gpointer async_lmf;
206
207 /*
208 * The callee address of the last mono_runtime_invoke call
209 */
210 gpointer invoke_addr;
211 } DebuggerTlsData;
212
213 /*
214 * Wire Protocol definitions
215 */
216
217 #define HEADER_LENGTH 11
218
219 #define MAJOR_VERSION 2
220 #define MINOR_VERSION 0
221
222 typedef enum {
223 CMD_SET_VM = 1,
224 CMD_SET_OBJECT_REF = 9,
225 CMD_SET_STRING_REF = 10,
226 CMD_SET_THREAD = 11,
227 CMD_SET_ARRAY_REF = 13,
228 CMD_SET_EVENT_REQUEST = 15,
229 CMD_SET_STACK_FRAME = 16,
230 CMD_SET_APPDOMAIN = 20,
231 CMD_SET_ASSEMBLY = 21,
232 CMD_SET_METHOD = 22,
233 CMD_SET_TYPE = 23,
234 CMD_SET_MODULE = 24,
235 CMD_SET_EVENT = 64
236 } CommandSet;
237
238 typedef enum {
239 EVENT_KIND_VM_START = 0,
240 EVENT_KIND_VM_DEATH = 1,
241 EVENT_KIND_THREAD_START = 2,
242 EVENT_KIND_THREAD_DEATH = 3,
243 EVENT_KIND_APPDOMAIN_CREATE = 4,
244 EVENT_KIND_APPDOMAIN_UNLOAD = 5,
245 EVENT_KIND_METHOD_ENTRY = 6,
246 EVENT_KIND_METHOD_EXIT = 7,
247 EVENT_KIND_ASSEMBLY_LOAD = 8,
248 EVENT_KIND_ASSEMBLY_UNLOAD = 9,
249 EVENT_KIND_BREAKPOINT = 10,
250 EVENT_KIND_STEP = 11,
251 EVENT_KIND_TYPE_LOAD = 12,
252 EVENT_KIND_EXCEPTION = 13
253 } EventKind;
254
255 typedef enum {
256 SUSPEND_POLICY_NONE = 0,
257 SUSPEND_POLICY_EVENT_THREAD = 1,
258 SUSPEND_POLICY_ALL = 2
259 } SuspendPolicy;
260
261 typedef enum {
262 ERR_NONE = 0,
263 ERR_INVALID_OBJECT = 20,
264 ERR_INVALID_FIELDID = 25,
265 ERR_INVALID_FRAMEID = 30,
266 ERR_NOT_IMPLEMENTED = 100,
267 ERR_NOT_SUSPENDED = 101,
268 ERR_INVALID_ARGUMENT = 102,
269 ERR_UNLOADED = 103
270 } ErrorCode;
271
272 typedef enum {
273 MOD_KIND_COUNT = 1,
274 MOD_KIND_THREAD_ONLY = 3,
275 MOD_KIND_LOCATION_ONLY = 7,
276 MOD_KIND_EXCEPTION_ONLY = 8,
277 MOD_KIND_STEP = 10,
278 MOD_KIND_ASSEMBLY_ONLY = 11
279 } ModifierKind;
280
281 typedef enum {
282 STEP_DEPTH_INTO = 0,
283 STEP_DEPTH_OVER = 1,
284 STEP_DEPTH_OUT = 2
285 } StepDepth;
286
287 typedef enum {
288 STEP_SIZE_MIN = 0,
289 STEP_SIZE_LINE = 1
290 } StepSize;
291
292 typedef enum {
293 TOKEN_TYPE_STRING = 0,
294 TOKEN_TYPE_TYPE = 1,
295 TOKEN_TYPE_FIELD = 2,
296 TOKEN_TYPE_METHOD = 3,
297 TOKEN_TYPE_UNKNOWN = 4
298 } DebuggerTokenType;
299
300 typedef enum {
301 VALUE_TYPE_ID_NULL = 0xf0,
302 VALUE_TYPE_ID_TYPE = 0xf1
303 } ValueTypeId;
304
305 typedef enum {
306 FRAME_FLAG_DEBUGGER_INVOKE = 1
307 } StackFrameFlags;
308
309 typedef enum {
310 INVOKE_FLAG_DISABLE_BREAKPOINTS = 1,
311 INVOKE_FLAG_SINGLE_THREADED = 2
312 } InvokeFlags;
313
314 typedef enum {
315 CMD_VM_VERSION = 1,
316 CMD_VM_ALL_THREADS = 2,
317 CMD_VM_SUSPEND = 3,
318 CMD_VM_RESUME = 4,
319 CMD_VM_EXIT = 5,
320 CMD_VM_DISPOSE = 6,
321 CMD_VM_INVOKE_METHOD = 7
322 } CmdVM;
323
324 typedef enum {
325 CMD_THREAD_GET_FRAME_INFO = 1,
326 CMD_THREAD_GET_NAME = 2,
327 CMD_THREAD_GET_STATE = 3,
328 CMD_THREAD_GET_INFO = 4
329 } CmdThread;
330
331 typedef enum {
332 CMD_EVENT_REQUEST_SET = 1,
333 CMD_EVENT_REQUEST_CLEAR = 2,
334 CMD_EVENT_REQUEST_CLEAR_ALL_BREAKPOINTS = 3
335 } CmdEvent;
336
337 typedef enum {
338 CMD_COMPOSITE = 100
339 } CmdComposite;
340
341 typedef enum {
342 CMD_APPDOMAIN_GET_ROOT_DOMAIN = 1,
343 CMD_APPDOMAIN_GET_FRIENDLY_NAME = 2,
344 CMD_APPDOMAIN_GET_ASSEMBLIES = 3,
345 CMD_APPDOMAIN_GET_ENTRY_ASSEMBLY = 4,
346 CMD_APPDOMAIN_CREATE_STRING = 5,
347 CMD_APPDOMAIN_GET_CORLIB = 6
348 } CmdAppDomain;
349
350 typedef enum {
351 CMD_ASSEMBLY_GET_LOCATION = 1,
352 CMD_ASSEMBLY_GET_ENTRY_POINT = 2,
353 CMD_ASSEMBLY_GET_MANIFEST_MODULE = 3,
354 CMD_ASSEMBLY_GET_OBJECT = 4,
355 CMD_ASSEMBLY_GET_TYPE = 5,
356 CMD_ASSEMBLY_GET_NAME = 6
357 } CmdAssembly;
358
359 typedef enum {
360 CMD_MODULE_GET_INFO = 1,
361 } CmdModule;
362
363 typedef enum {
364 CMD_METHOD_GET_NAME = 1,
365 CMD_METHOD_GET_DECLARING_TYPE = 2,
366 CMD_METHOD_GET_DEBUG_INFO = 3,
367 CMD_METHOD_GET_PARAM_INFO = 4,
368 CMD_METHOD_GET_LOCALS_INFO = 5,
369 CMD_METHOD_GET_INFO = 6,
370 CMD_METHOD_GET_BODY = 7,
371 CMD_METHOD_RESOLVE_TOKEN = 8,
372 } CmdMethod;
373
374 typedef enum {
375 CMD_TYPE_GET_INFO = 1,
376 CMD_TYPE_GET_METHODS = 2,
377 CMD_TYPE_GET_FIELDS = 3,
378 CMD_TYPE_GET_VALUES = 4,
379 CMD_TYPE_GET_OBJECT = 5,
380 CMD_TYPE_GET_SOURCE_FILES = 6,
381 CMD_TYPE_SET_VALUES = 7,
382 CMD_TYPE_IS_ASSIGNABLE_FROM = 8,
383 CMD_TYPE_GET_PROPERTIES = 9,
384 CMD_TYPE_GET_CATTRS = 10,
385 CMD_TYPE_GET_FIELD_CATTRS = 11,
386 CMD_TYPE_GET_PROPERTY_CATTRS = 12
387 } CmdType;
388
389 typedef enum {
390 CMD_STACK_FRAME_GET_VALUES = 1,
391 CMD_STACK_FRAME_GET_THIS = 2,
392 CMD_STACK_FRAME_SET_VALUES = 3
393 } CmdStackFrame;
394
395 typedef enum {
396 CMD_ARRAY_REF_GET_LENGTH = 1,
397 CMD_ARRAY_REF_GET_VALUES = 2,
398 CMD_ARRAY_REF_SET_VALUES = 3,
399 } CmdArray;
400
401 typedef enum {
402 CMD_STRING_REF_GET_VALUE = 1,
403 } CmdString;
404
405 typedef enum {
406 CMD_OBJECT_REF_GET_TYPE = 1,
407 CMD_OBJECT_REF_GET_VALUES = 2,
408 CMD_OBJECT_REF_IS_COLLECTED = 3,
409 CMD_OBJECT_REF_GET_ADDRESS = 4,
410 CMD_OBJECT_REF_GET_DOMAIN = 5,
411 CMD_OBJECT_REF_SET_VALUES = 6
412 } CmdObject;
413
414 typedef struct {
415 ModifierKind kind;
416 union {
417 int count; /* For kind == MOD_KIND_COUNT */
418 MonoInternalThread *thread; /* For kind == MOD_KIND_THREAD_ONLY */
419 MonoClass *exc_class; /* For kind == MONO_KIND_EXCEPTION_ONLY */
420 MonoAssembly **assemblies; /* For kind == MONO_KIND_ASSEMBLY_ONLY */
421 } data;
422 } Modifier;
423
424 typedef struct{
425 int id;
426 int event_kind;
427 int suspend_policy;
428 int nmodifiers;
429 gpointer info;
430 Modifier modifiers [MONO_ZERO_LEN_ARRAY];
431 } EventRequest;
432
433 /*
434 * Describes a single step request.
435 */
436 typedef struct {
437 EventRequest *req;
438 MonoInternalThread *thread;
439 StepDepth depth;
440 StepSize size;
441 gpointer last_sp;
442 gpointer start_sp;
443 MonoMethod *last_method;
444 int last_line;
445 /* Whenever single stepping is performed using start/stop_single_stepping () */
446 gboolean global;
447 /* The list of breakpoints used to implement step-over */
448 GSList *bps;
449 } SingleStepReq;
450
451 /* Dummy structure used for the profiler callbacks */
452 typedef struct {
453 void* dummy;
454 } DebuggerProfiler;
455
456 #define DEBUG(level,s) do { if (G_UNLIKELY ((level) <= log_level)) { s; fflush (log_file); } } while (0)
457
458 /*
459 * Globals
460 */
461
462 static AgentConfig agent_config;
463
464 /*
465 * Whenever the agent is fully initialized.
466 * When using the onuncaught or onthrow options, only some parts of the agent are
467 * initialized on startup, and the full initialization which includes connection
468 * establishment and the startup of the agent thread is only done in response to
469 * an event.
470 */
471 static gint32 inited;
472
473 static int conn_fd;
474
475 static int packet_id = 0;
476
477 static int objref_id = 0;
478
479 static int event_request_id = 0;
480
481 static int frame_id = 0;
482
483 static GPtrArray *event_requests;
484
485 static guint32 debugger_tls_id;
486
487 static gboolean vm_start_event_sent, vm_death_event_sent, disconnected;
488
489 /* Maps MonoInternalThread -> DebuggerTlsData */
490 static MonoGHashTable *thread_to_tls;
491
492 /* Maps tid -> MonoInternalThread */
493 static MonoGHashTable *tid_to_thread;
494
495 /* Maps tid -> MonoThread (not MonoInternalThread) */
496 static MonoGHashTable *tid_to_thread_obj;
497
498 static gsize debugger_thread_id;
499
500 static HANDLE debugger_thread_handle;
501
502 static int log_level;
503
504 static FILE *log_file;
505
506 /* Classes whose class load event has been sent */
507 static GHashTable *loaded_classes;
508
509 /* Assemblies whose assembly load event has no been sent yet */
510 static GPtrArray *pending_assembly_loads;
511
512 /* Whenever the debugger thread has exited */
513 static gboolean debugger_thread_exited;
514
515 /* Cond variable used to wait for debugger_thread_exited becoming true */
516 static mono_cond_t debugger_thread_exited_cond;
517
518 /* Mutex for the cond var above */
519 static mono_mutex_t debugger_thread_exited_mutex;
520
521 static DebuggerProfiler debugger_profiler;
522
523 /* The single step request instance */
524 static SingleStepReq *ss_req = NULL;
525 static gpointer ss_invoke_addr = NULL;
526
527 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
528 /* Number of single stepping operations in progress */
529 static int ss_count;
530 #endif
531
532 static void transport_connect (const char *host, int port);
533
534 static guint32 WINAPI debugger_thread (void *arg);
535
536 static void runtime_initialized (MonoProfiler *prof);
537
538 static void runtime_shutdown (MonoProfiler *prof);
539
540 static void thread_startup (MonoProfiler *prof, gsize tid);
541
542 static void thread_end (MonoProfiler *prof, gsize tid);
543
544 static void appdomain_load (MonoProfiler *prof, MonoDomain *domain, int result);
545
546 static void appdomain_unload (MonoProfiler *prof, MonoDomain *domain);
547
548 static void assembly_load (MonoProfiler *prof, MonoAssembly *assembly, int result);
549
550 static void assembly_unload (MonoProfiler *prof, MonoAssembly *assembly);
551
552 static void start_runtime_invoke (MonoProfiler *prof, MonoMethod *method);
553
554 static void end_runtime_invoke (MonoProfiler *prof, MonoMethod *method);
555
556 static void jit_end (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *jinfo, int result);
557
558 static void add_pending_breakpoints (MonoMethod *method, MonoJitInfo *jinfo);
559
560 static void start_single_stepping (void);
561
562 static void stop_single_stepping (void);
563
564 static void suspend_current (void);
565
566 /* Submodule init/cleanup */
567 static void breakpoints_init (void);
568 static void breakpoints_cleanup (void);
569
570 static void objrefs_init (void);
571 static void objrefs_cleanup (void);
572
573 static void ids_init (void);
574 static void ids_cleanup (void);
575
576 static void suspend_init (void);
577
578 static void ss_start (SingleStepReq *ss_req, MonoMethod *method, SeqPoint *sp, MonoSeqPointInfo *info, MonoContext *ctx, DebuggerTlsData *tls);
579 static ErrorCode ss_create (MonoInternalThread *thread, StepSize size, StepDepth depth, EventRequest *req);
580 static void ss_destroy (SingleStepReq *req);
581
582 static void start_debugger_thread (void);
583
584 static void finish_agent_init (gboolean on_startup);
585
586 static int
587 parse_address (char *address, char **host, int *port)
588 {
589 char *pos = strchr (address, ':');
590
591 if (pos == NULL || pos == address)
592 return 1;
593
594 *host = g_malloc (pos - address + 1);
595 strncpy (*host, address, pos - address);
596 (*host) [pos - address] = '\0';
597
598 *port = atoi (pos + 1);
599
600 return 0;
601 }
602
603 static void
604 print_usage (void)
605 {
606 fprintf (stderr, "Usage: mono --debugger-agent=[<option>=<value>,...] ...\n");
607 fprintf (stderr, "Available options:\n");
608 fprintf (stderr, " transport=<transport>\t\tTransport to use for connecting to the debugger (mandatory, possible values: 'dt_socket')\n");
609 fprintf (stderr, " address=<hostname>:<port>\tAddress to connect to (mandatory)\n");
610 fprintf (stderr, " loglevel=<n>\t\t\tLog level (defaults to 0)\n");
611 fprintf (stderr, " logfile=<file>\t\tFile to log to (defaults to stdout)\n");
612 fprintf (stderr, " suspend=y/n\t\t\tWhenever to suspend after startup.\n");
613 fprintf (stderr, " timeout=<n>\t\t\tTimeout for connecting in milliseconds.\n");
614 fprintf (stderr, " help\t\t\t\tPrint this help.\n");
615 }
616
617 static gboolean
618 parse_flag (const char *option, char *flag)
619 {
620 if (!strcmp (flag, "y"))
621 return TRUE;
622 else if (!strcmp (flag, "n"))
623 return FALSE;
624 else {
625 fprintf (stderr, "debugger-agent: The valid values for the '%s' option are 'y' and 'n'.\n", option);
626 exit (1);
627 return FALSE;
628 }
629 }
630
631 void
632 mono_debugger_agent_parse_options (char *options)
633 {
634 char **args, **ptr;
635 char *host;
636 int port;
637
638 #ifndef MONO_ARCH_SOFT_DEBUG_SUPPORTED
639 fprintf (stderr, "--debugger-agent is not supported on this platform.\n");
640 exit (1);
641 #endif
642
643 agent_config.enabled = TRUE;
644 agent_config.suspend = TRUE;
645 agent_config.server = FALSE;
646
647 args = g_strsplit (options, ",", -1);
648 for (ptr = args; ptr && *ptr; ptr ++) {
649 char *arg = *ptr;
650
651 if (strncmp (arg, "transport=", 10) == 0) {
652 agent_config.transport = g_strdup (arg + 10);
653 } else if (strncmp (arg, "address=", 8) == 0) {
654 agent_config.address = g_strdup (arg + 8);
655 } else if (strncmp (arg, "loglevel=", 9) == 0) {
656 agent_config.log_level = atoi (arg + 9);
657 } else if (strncmp (arg, "logfile=", 8) == 0) {
658 agent_config.log_file = g_strdup (arg + 8);
659 } else if (strncmp (arg, "suspend=", 8) == 0) {
660 agent_config.suspend = parse_flag ("suspend", arg + 8);
661 } else if (strncmp (arg, "server=", 7) == 0) {
662 agent_config.server = parse_flag ("server", arg + 7);
663 } else if (strncmp (arg, "onuncaught=", 11) == 0) {
664 agent_config.onuncaught = parse_flag ("onuncaught", arg + 11);
665 } else if (strncmp (arg, "onthrow=", 8) == 0) {
666 /* We support multiple onthrow= options */
667 agent_config.onthrow = g_slist_append (agent_config.onthrow, g_strdup (arg + 8));
668 } else if (strncmp (arg, "onthrow", 7) == 0) {
669 agent_config.onthrow = g_slist_append (agent_config.onthrow, g_strdup (""));
670 } else if (strncmp (arg, "help", 4) == 0) {
671 print_usage ();
672 exit (0);
673 } else if (strncmp (arg, "timeout=", 8) == 0) {
674 agent_config.timeout = atoi (arg + 8);
675 } else if (strncmp (arg, "launch=", 7) == 0) {
676 agent_config.launch = g_strdup (arg + 7);
677 } else {
678 print_usage ();
679 exit (1);
680 }
681 }
682
683 if (agent_config.transport == NULL) {
684 fprintf (stderr, "debugger-agent: The 'transport' option is mandatory.\n");
685 exit (1);
686 }
687 if (strcmp (agent_config.transport, "dt_socket") != 0) {
688 fprintf (stderr, "debugger-agent: The only supported value for the 'transport' option is 'dt_socket'.\n");
689 exit (1);
690 }
691
692 if (agent_config.address == NULL && !agent_config.server) {
693 fprintf (stderr, "debugger-agent: The 'address' option is mandatory.\n");
694 exit (1);
695 }
696
697 if (agent_config.address && parse_address (agent_config.address, &host, &port)) {
698 fprintf (stderr, "debugger-agent: The format of the 'address' options is '<host>:<port>'\n");
699 exit (1);
700 }
701 }
702
703 void
704 mono_debugger_agent_init (void)
705 {
706 if (!agent_config.enabled)
707 return;
708
709 /* Need to know whenever a thread has acquired the loader mutex */
710 mono_loader_lock_track_ownership (TRUE);
711
712 event_requests = g_ptr_array_new ();
713
714 mono_mutex_init (&debugger_thread_exited_mutex, NULL);
715 mono_cond_init (&debugger_thread_exited_cond, NULL);
716
717 mono_profiler_install ((MonoProfiler*)&debugger_profiler, runtime_shutdown);
718 mono_profiler_set_events (MONO_PROFILE_APPDOMAIN_EVENTS | MONO_PROFILE_THREADS | MONO_PROFILE_ASSEMBLY_EVENTS | MONO_PROFILE_JIT_COMPILATION | MONO_PROFILE_METHOD_EVENTS);
719 mono_profiler_install_runtime_initialized (runtime_initialized);
720 mono_profiler_install_appdomain (NULL, appdomain_load, NULL, appdomain_unload);
721 mono_profiler_install_thread (thread_startup, thread_end);
722 mono_profiler_install_assembly (NULL, assembly_load, assembly_unload, NULL);
723 mono_profiler_install_jit_end (jit_end);
724 mono_profiler_install_method_invoke (start_runtime_invoke, end_runtime_invoke);
725
726 debugger_tls_id = TlsAlloc ();
727
728 thread_to_tls = mono_g_hash_table_new (NULL, NULL);
729 MONO_GC_REGISTER_ROOT (thread_to_tls);
730
731 tid_to_thread = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC);
732 MONO_GC_REGISTER_ROOT (tid_to_thread);
733
734 tid_to_thread_obj = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC);
735 MONO_GC_REGISTER_ROOT (tid_to_thread_obj);
736
737 loaded_classes = g_hash_table_new (mono_aligned_addr_hash, NULL);
738 pending_assembly_loads = g_ptr_array_new ();
739
740 log_level = agent_config.log_level;
741
742 if (agent_config.log_file) {
743 log_file = fopen (agent_config.log_file, "w+");
744 if (!log_file) {
745 fprintf (stderr, "Unable to create log file '%s': %s.\n", agent_config.log_file, strerror (errno));
746 exit (1);
747 }
748 } else {
749 log_file = stdout;
750 }
751
752 ids_init ();
753 objrefs_init ();
754 breakpoints_init ();
755 suspend_init ();
756
757 mini_get_debug_options ()->gen_seq_points = TRUE;
758 /*
759 * This is needed because currently we don't handle liveness info.
760 */
761 mini_get_debug_options ()->mdb_optimizations = TRUE;
762
763 /* This is needed because we can't set local variables in registers yet */
764 mono_disable_optimizations (MONO_OPT_LINEARS);
765
766 if (!agent_config.onuncaught && !agent_config.onthrow)
767 finish_agent_init (TRUE);
768 }
769
770 /*
771 * finish_agent_init:
772 *
773 * Finish the initialization of the agent. This involves connecting the transport
774 * and starting the agent thread. This is either done at startup, or
775 * in response to some event like an unhandled exception.
776 */
777 static void
778 finish_agent_init (gboolean on_startup)
779 {
780 char *host;
781 int port;
782 int res;
783
784 if (InterlockedCompareExchange (&inited, 1, 0) == 1)
785 return;
786
787 if (agent_config.launch) {
788 char *argv [16];
789
790 // FIXME: Generated address
791 // FIXME: Races with transport_connect ()
792
793 argv [0] = agent_config.launch;
794 argv [1] = agent_config.transport;
795 argv [2] = agent_config.address;
796 argv [3] = NULL;
797
798 res = g_spawn_async_with_pipes (NULL, argv, NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
799 if (!res) {
800 fprintf (stderr, "Failed to execute '%s'.\n", agent_config.launch);
801 exit (1);
802 }
803 }
804
805 if (agent_config.address) {
806 res = parse_address (agent_config.address, &host, &port);
807 g_assert (res == 0);
808 } else {
809 host = NULL;
810 port = 0;
811 }
812
813 transport_connect (host, port);
814
815 if (!on_startup) {
816 /* Do some which is usually done after sending the VMStart () event */
817 vm_start_event_sent = TRUE;
818 start_debugger_thread ();
819 }
820 }
821
822 static void
823 mono_debugger_agent_cleanup (void)
824 {
825 if (!inited)
826 return;
827
828 /* This will interrupt the agent thread */
829 /* Close the read part only so it can still send back replies */
830 #ifdef HOST_WIN32
831 shutdown (conn_fd, SD_RECEIVE);
832 #else
833 shutdown (conn_fd, SHUT_RD);
834 #endif
835
836 /*
837 * Wait for the thread to exit.
838 *
839 * If we continue with the shutdown without waiting for it, then the client might
840 * not receive an answer to its last command like a resume.
841 * The WaitForSingleObject infrastructure doesn't seem to work during shutdown, so
842 * use pthreads.
843 */
844 //WaitForSingleObject (debugger_thread_handle, INFINITE);
845 if (GetCurrentThreadId () != debugger_thread_id) {
846 mono_mutex_lock (&debugger_thread_exited_mutex);
847 if (!debugger_thread_exited) {
848 #ifdef HOST_WIN32
849 if (WAIT_TIMEOUT == WaitForSingleObject(debugger_thread_exited_cond, 0)) {
850 mono_mutex_unlock (&debugger_thread_exited_mutex);
851 Sleep(0);
852 mono_mutex_lock (&debugger_thread_exited_mutex);
853 }
854 #else
855 mono_cond_wait (&debugger_thread_exited_cond, &debugger_thread_exited_mutex);
856 #endif
857 }
858 mono_mutex_unlock (&debugger_thread_exited_mutex);
859 }
860
861 breakpoints_cleanup ();
862 objrefs_cleanup ();
863 ids_cleanup ();
864
865 #ifdef HOST_WIN32
866 shutdown (conn_fd, SD_BOTH);
867 #else
868 shutdown (conn_fd, SHUT_RDWR);
869 #endif
870
871 mono_mutex_destroy (&debugger_thread_exited_mutex);
872 mono_cond_destroy (&debugger_thread_exited_cond);
873 }
874
875 /*
876 * transport_connect:
877 *
878 * Connect/Listen on HOST:PORT. If HOST is NULL, generate an address and listen on it.
879 */
880 static void
881 transport_connect (const char *host, int port)
882 {
883 struct addrinfo hints;
884 struct addrinfo *result, *rp;
885 int sfd, s, res;
886 char port_string [128];
887 char handshake_msg [128];
888 guint8 buf [128];
889
890 conn_fd = -1;
891
892 if (host) {
893 sprintf (port_string, "%d", port);
894
895 mono_network_init ();
896
897 /* Obtain address(es) matching host/port */
898
899 memset (&hints, 0, sizeof (struct addrinfo));
900 hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */
901 hints.ai_socktype = SOCK_STREAM; /* Datagram socket */
902 hints.ai_flags = 0;
903 hints.ai_protocol = 0; /* Any protocol */
904
905 s = getaddrinfo (host, port_string, &hints, &result);
906 if (s != 0) {
907 fprintf (stderr, "debugger-agent: Unable to connect to %s:%d: %s\n", host, port, gai_strerror (s));
908 exit (1);
909 }
910 }
911
912 if (agent_config.server) {
913 /* Wait for a connection */
914 if (!host) {
915 struct sockaddr_in addr;
916 socklen_t addrlen;
917
918 /* No address, generate one */
919 sfd = socket (AF_INET, SOCK_STREAM, 0);
920 g_assert (sfd);
921
922 /* This will bind the socket to a random port */
923 res = listen (sfd, 16);
924 if (res == -1) {
925 fprintf (stderr, "debugger-agent: Unable to setup listening socket: %s\n", strerror (errno));
926 exit (1);
927 }
928
929 addrlen = sizeof (addr);
930 memset (&addr, 0, sizeof (addr));
931 res = getsockname (sfd, &addr, &addrlen);
932 g_assert (res == 0);
933
934 host = "127.0.0.1";
935 port = ntohs (addr.sin_port);
936
937 /* Emit the address to stdout */
938 /* FIXME: Should print another interface, not localhost */
939 printf ("%s:%d\n", host, port);
940 } else {
941 /* Listen on the provided address */
942 for (rp = result; rp != NULL; rp = rp->ai_next) {
943 sfd = socket (rp->ai_family, rp->ai_socktype,
944 rp->ai_protocol);
945 if (sfd == -1)
946 continue;
947
948 res = bind (sfd, rp->ai_addr, rp->ai_addrlen);
949 if (res == -1)
950 continue;
951
952 res = listen (sfd, 16);
953 if (res == -1)
954 continue;
955 break;
956 }
957
958 #ifndef HOST_WIN32
959 /*
960 * this function is not present on win2000 which we still support, and the
961 * workaround described here:
962 * http://msdn.microsoft.com/en-us/library/ms737931(VS.85).aspx
963 * only works with MSVC.
964 */
965 freeaddrinfo (result);
966 #endif
967 }
968
969 DEBUG (1, fprintf (log_file, "Listening on %s:%d (timeout=%d ms)...\n", host, port, agent_config.timeout));
970
971 if (agent_config.timeout) {
972 fd_set readfds;
973 struct timeval tv;
974
975 tv.tv_sec = 0;
976 tv.tv_usec = agent_config.timeout * 1000;
977 FD_ZERO (&readfds);
978 FD_SET (sfd, &readfds);
979 res = select (sfd + 1, &readfds, NULL, NULL, &tv);
980 if (res == 0) {
981 fprintf (stderr, "debugger-agent: Timed out waiting to connect.\n");
982 exit (1);
983 }
984 }
985
986 conn_fd = accept (sfd, NULL, NULL);
987 if (conn_fd == -1) {
988 fprintf (stderr, "debugger-agent: Unable to listen on %s:%d\n", host, port);
989 exit (1);
990 }
991
992 DEBUG (1, fprintf (log_file, "Accepted connection from client, socket fd=%d.\n", conn_fd));
993 } else {
994 /* Connect to the specified address */
995 /* FIXME: Respect the timeout */
996 for (rp = result; rp != NULL; rp = rp->ai_next) {
997 sfd = socket (rp->ai_family, rp->ai_socktype,
998 rp->ai_protocol);
999 if (sfd == -1)
1000 continue;
1001
1002 if (connect (sfd, rp->ai_addr, rp->ai_addrlen) != -1)
1003 break; /* Success */
1004
1005 close (sfd);
1006 }
1007
1008 conn_fd = sfd;
1009
1010 #ifndef HOST_WIN32
1011 /* See the comment above */
1012 freeaddrinfo (result);
1013 #endif
1014
1015 if (rp == 0) {
1016 fprintf (stderr, "debugger-agent: Unable to connect to %s:%d\n", host, port);
1017 exit (1);
1018 }
1019 }
1020
1021 /* Write handshake message */
1022 sprintf (handshake_msg, "DWP-Handshake");
1023 res = send (conn_fd, handshake_msg, strlen (handshake_msg), 0);
1024 g_assert (res != -1);
1025
1026 /* Read answer */
1027 res = recv (conn_fd, buf, strlen (handshake_msg), 0);
1028 if ((res != strlen (handshake_msg)) || (memcmp (buf, handshake_msg, strlen (handshake_msg) != 0))) {
1029 fprintf (stderr, "debugger-agent: DWP handshake failed.\n");
1030 exit (1);
1031 }
1032
1033 /*
1034 * Set TCP_NODELAY on the socket so the client receives events/command
1035 * results immediately.
1036 */
1037 {
1038 int flag = 1;
1039 int result = setsockopt(conn_fd,
1040 IPPROTO_TCP,
1041 TCP_NODELAY,
1042 (char *) &flag,
1043 sizeof(int));
1044 g_assert (result >= 0);
1045 }
1046 }
1047
1048 static gboolean
1049 transport_send (guint8 *data, int len)
1050 {
1051 int res;
1052
1053 res = send (conn_fd, data, len, 0);
1054 if (res != len)
1055 return FALSE;
1056 else
1057 return TRUE;
1058 }
1059
1060 static void
1061 start_debugger_thread (void)
1062 {
1063 gsize tid;
1064
1065 debugger_thread_handle = mono_create_thread (NULL, 0, debugger_thread, NULL, 0, &tid);
1066 g_assert (debugger_thread_handle);
1067 }
1068
1069 /*
1070 * Functions to decode protocol data
1071 */
1072
1073 static inline int
1074 decode_byte (guint8 *buf, guint8 **endbuf, guint8 *limit)
1075 {
1076 *endbuf = buf + 1;
1077 g_assert (*endbuf <= limit);
1078 return buf [0];
1079 }
1080
1081 static inline int
1082 decode_int (guint8 *buf, guint8 **endbuf, guint8 *limit)
1083 {
1084 *endbuf = buf + 4;
1085 g_assert (*endbuf <= limit);
1086
1087 return (((int)buf [0]) << 24) | (((int)buf [1]) << 16) | (((int)buf [2]) << 8) | (((int)buf [3]) << 0);
1088 }
1089
1090 static inline gint64
1091 decode_long (guint8 *buf, guint8 **endbuf, guint8 *limit)
1092 {
1093 guint32 high = decode_int (buf, &buf, limit);
1094 guint32 low = decode_int (buf, &buf, limit);
1095
1096 *endbuf = buf;
1097
1098 return ((((guint64)high) << 32) | ((guint64)low));
1099 }
1100
1101 static inline int
1102 decode_id (guint8 *buf, guint8 **endbuf, guint8 *limit)
1103 {
1104 return decode_int (buf, endbuf, limit);
1105 }
1106
1107 static inline char*
1108 decode_string (guint8 *buf, guint8 **endbuf, guint8 *limit)
1109 {
1110 int len = decode_int (buf, &buf, limit);
1111 char *s;
1112
1113 s = g_malloc (len + 1);
1114 g_assert (s);
1115
1116 memcpy (s, buf, len);
1117 s [len] = '\0';
1118 buf += len;
1119 *endbuf = buf;
1120
1121 return s;
1122 }
1123
1124 /*
1125 * Functions to encode protocol data
1126 */
1127
1128 typedef struct {
1129 guint8 *buf, *p, *end;
1130 } Buffer;
1131
1132 static inline void
1133 buffer_init (Buffer *buf, int size)
1134 {
1135 buf->buf = g_malloc (size);
1136 buf->p = buf->buf;
1137 buf->end = buf->buf + size;
1138 }
1139
1140 static inline void
1141 buffer_make_room (Buffer *buf, int size)
1142 {
1143 if (buf->end - buf->p < size) {
1144 int new_size = buf->end - buf->buf + size + 32;
1145 guint8 *p = g_realloc (buf->buf, new_size);
1146 size = buf->p - buf->buf;
1147 buf->buf = p;
1148 buf->p = p + size;
1149 buf->end = buf->buf + new_size;
1150 }
1151 }
1152
1153 static inline void
1154 buffer_add_byte (Buffer *buf, guint8 val)
1155 {
1156 buffer_make_room (buf, 1);
1157 buf->p [0] = val;
1158 buf->p++;
1159 }
1160
1161 static inline void
1162 buffer_add_int (Buffer *buf, guint32 val)
1163 {
1164 buffer_make_room (buf, 4);
1165 buf->p [0] = (val >> 24) & 0xff;
1166 buf->p [1] = (val >> 16) & 0xff;
1167 buf->p [2] = (val >> 8) & 0xff;
1168 buf->p [3] = (val >> 0) & 0xff;
1169 buf->p += 4;
1170 }
1171
1172 static inline void
1173 buffer_add_long (Buffer *buf, guint64 l)
1174 {
1175 buffer_add_int (buf, (l >> 32) & 0xffffffff);
1176 buffer_add_int (buf, (l >> 0) & 0xffffffff);
1177 }
1178
1179 static inline void
1180 buffer_add_id (Buffer *buf, int id)
1181 {
1182 buffer_add_int (buf, (guint64)id);
1183 }
1184
1185 static inline void
1186 buffer_add_data (Buffer *buf, guint8 *data, int len)
1187 {
1188 buffer_make_room (buf, len);
1189 memcpy (buf->p, data, len);
1190 buf->p += len;
1191 }
1192
1193 static inline void
1194 buffer_add_string (Buffer *buf, const char *str)
1195 {
1196 int len;
1197
1198 if (str == NULL) {
1199 buffer_add_int (buf, 0);
1200 } else {
1201 len = strlen (str);
1202 buffer_add_int (buf, len);
1203 buffer_add_data (buf, (guint8*)str, len);
1204 }
1205 }
1206
1207 static inline void
1208 buffer_free (Buffer *buf)
1209 {
1210 g_free (buf->buf);
1211 }
1212
1213 static gboolean
1214 send_packet (int command_set, int command, Buffer *data)
1215 {
1216 Buffer buf;
1217 int len, id;
1218 gboolean res;
1219
1220 id = InterlockedIncrement (&packet_id);
1221
1222 len = data->p - data->buf + 11;
1223 buffer_init (&buf, len);
1224 buffer_add_int (&buf, len);
1225 buffer_add_int (&buf, id);
1226 buffer_add_byte (&buf, 0); /* flags */
1227 buffer_add_byte (&buf, command_set);
1228 buffer_add_byte (&buf, command);
1229 memcpy (buf.buf + 11, data->buf, data->p - data->buf);
1230
1231 res = transport_send (buf.buf, len);
1232
1233 buffer_free (&buf);
1234
1235 return res;
1236 }
1237
1238 static gboolean
1239 send_reply_packet (int id, int error, Buffer *data)
1240 {
1241 Buffer buf;
1242 int len;
1243 gboolean res;
1244
1245 len = data->p - data->buf + 11;
1246 buffer_init (&buf, len);
1247 buffer_add_int (&buf, len);
1248 buffer_add_int (&buf, id);
1249 buffer_add_byte (&buf, 0x80); /* flags */
1250 buffer_add_byte (&buf, (error >> 8) & 0xff);
1251 buffer_add_byte (&buf, error);
1252 memcpy (buf.buf + 11, data->buf, data->p - data->buf);
1253
1254 res = transport_send (buf.buf, len);
1255
1256 buffer_free (&buf);
1257
1258 return res;
1259 }
1260
1261 /*
1262 * OBJECT IDS
1263 */
1264
1265 /*
1266 * Represents an object accessible by the debugger client.
1267 */
1268 typedef struct {
1269 /* Unique id used in the wire protocol to refer to objects */
1270 int id;
1271 /*
1272 * A weakref gc handle pointing to the object. The gc handle is used to
1273 * detect if the object was garbage collected.
1274 */
1275 guint32 handle;
1276 } ObjRef;
1277
1278 /* Maps objid -> ObjRef */
1279 static GHashTable *objrefs;
1280
1281 static void
1282 free_objref (gpointer value)
1283 {
1284 ObjRef *o = value;
1285
1286 mono_gchandle_free (o->handle);
1287
1288 g_free (o);
1289 }
1290
1291 static void
1292 objrefs_init (void)
1293 {
1294 objrefs = g_hash_table_new_full (NULL, NULL, NULL, free_objref);
1295 }
1296
1297 static void
1298 objrefs_cleanup (void)
1299 {
1300 g_hash_table_destroy (objrefs);
1301 objrefs = NULL;
1302 }
1303
1304 static GHashTable *obj_to_objref;
1305
1306 /*
1307 * Return an ObjRef for OBJ.
1308 */
1309 static ObjRef*
1310 get_objref (MonoObject *obj)
1311 {
1312 ObjRef *ref;
1313
1314 if (obj == NULL)
1315 return 0;
1316
1317 #ifdef HAVE_SGEN_GC
1318 NOT_IMPLEMENTED;
1319 #endif
1320
1321 /* Use a hash table with masked pointers to internalize object references */
1322 /* FIXME: This can grow indefinitely */
1323 mono_loader_lock ();
1324
1325 if (!obj_to_objref)
1326 obj_to_objref = g_hash_table_new (NULL, NULL);
1327
1328 ref = g_hash_table_lookup (obj_to_objref, GINT_TO_POINTER (~((gsize)obj)));
1329 /* ref might refer to a different object with the same addr which was GCd */
1330 if (ref && mono_gchandle_get_target (ref->handle) == obj) {
1331 mono_loader_unlock ();
1332 return ref;
1333 }
1334
1335 ref = g_new0 (ObjRef, 1);
1336 ref->id = InterlockedIncrement (&objref_id);
1337 ref->handle = mono_gchandle_new_weakref (obj, FALSE);
1338
1339 g_hash_table_insert (objrefs, GINT_TO_POINTER (ref->id), ref);
1340 g_hash_table_insert (obj_to_objref, GINT_TO_POINTER (~((gsize)obj)), ref);
1341
1342 mono_loader_unlock ();
1343
1344 return ref;
1345 }
1346
1347 static inline int
1348 get_objid (MonoObject *obj)
1349 {
1350 return get_objref (obj)->id;
1351 }
1352
1353 /*
1354 * Set OBJ to the object identified by OBJID.
1355 * Returns 0 or an error code if OBJID is invalid or the object has been garbage
1356 * collected.
1357 */
1358 static ErrorCode
1359 get_object_allow_null (int objid, MonoObject **obj)
1360 {
1361 ObjRef *ref;
1362
1363 if (objid == 0) {
1364 *obj = NULL;
1365 return 0;
1366 }
1367
1368 if (!objrefs)
1369 return ERR_INVALID_OBJECT;
1370
1371 mono_loader_lock ();
1372
1373 ref = g_hash_table_lookup (objrefs, GINT_TO_POINTER (objid));
1374
1375 if (ref) {
1376 *obj = mono_gchandle_get_target (ref->handle);
1377 mono_loader_unlock ();
1378 if (!(*obj))
1379 return ERR_INVALID_OBJECT;
1380 return 0;
1381 } else {
1382 mono_loader_unlock ();
1383 return ERR_INVALID_OBJECT;
1384 }
1385 }
1386
1387 static ErrorCode
1388 get_object (int objid, MonoObject **obj)
1389 {
1390 int err = get_object_allow_null (objid, obj);
1391
1392 if (err)
1393 return err;
1394 if (!(*obj))
1395 return ERR_INVALID_OBJECT;
1396 return 0;
1397 }
1398
1399 static inline int
1400 decode_objid (guint8 *buf, guint8 **endbuf, guint8 *limit)
1401 {
1402 return decode_id (buf, endbuf, limit);
1403 }
1404
1405 static inline void
1406 buffer_add_objid (Buffer *buf, MonoObject *o)
1407 {
1408 buffer_add_id (buf, get_objid (o));
1409 }
1410
1411 /*
1412 * IDS
1413 */
1414
1415 typedef enum {
1416 ID_ASSEMBLY = 0,
1417 ID_MODULE = 1,
1418 ID_TYPE = 2,
1419 ID_METHOD = 3,
1420 ID_FIELD = 4,
1421 ID_DOMAIN = 5,
1422 ID_PROPERTY = 6,
1423 ID_NUM
1424 } IdType;
1425
1426 /*
1427 * Represents a runtime structure accessible to the debugger client
1428 */
1429 typedef struct {
1430 /* Unique id used in the wire protocol */
1431 int id;
1432 /* Domain of the runtime structure, NULL if the domain was unloaded */
1433 MonoDomain *domain;
1434 union {
1435 gpointer val;
1436 MonoClass *klass;
1437 MonoMethod *method;
1438 MonoImage *image;
1439 MonoAssembly *assembly;
1440 MonoClassField *field;
1441 MonoDomain *domain;
1442 MonoProperty *property;
1443 } data;
1444 } Id;
1445
1446 typedef struct {
1447 /* Maps runtime structure -> Id */
1448 GHashTable *val_to_id [ID_NUM];
1449 } AgentDomainInfo;
1450
1451 /* Maps id -> Id */
1452 static GPtrArray *ids [ID_NUM];
1453
1454 static void
1455 ids_init (void)
1456 {
1457 int i;
1458
1459 for (i = 0; i < ID_NUM; ++i)
1460 ids [i] = g_ptr_array_new ();
1461 }
1462
1463 static void
1464 ids_cleanup (void)
1465 {
1466 int i, j;
1467
1468 for (i = 0; i < ID_NUM; ++i) {
1469 if (ids [i]) {
1470 for (j = 0; j < ids [i]->len; ++j)
1471 g_free (g_ptr_array_index (ids [i], j));
1472 g_ptr_array_free (ids [i], TRUE);
1473 }
1474 ids [i] = NULL;
1475 }
1476 }
1477
1478 void
1479 mono_debugger_agent_free_domain_info (MonoDomain *domain)
1480 {
1481 AgentDomainInfo *info = domain_jit_info (domain)->agent_info;
1482 int i, j;
1483
1484 if (info) {
1485 for (i = 0; i < ID_NUM; ++i)
1486 if (info->val_to_id [i])
1487 g_hash_table_destroy (info->val_to_id [i]);
1488 g_free (info);
1489 }
1490
1491 domain_jit_info (domain)->agent_info = NULL;
1492
1493 /* Clear ids referencing structures in the domain */
1494 for (i = 0; i < ID_NUM; ++i) {
1495 if (ids [i]) {
1496 for (j = 0; j < ids [i]->len; ++j) {
1497 Id *id = g_ptr_array_index (ids [i], j);
1498 if (id->domain == domain)
1499 id->domain = NULL;
1500 }
1501 }
1502 }
1503 }
1504
1505 static int
1506 get_id (MonoDomain *domain, IdType type, gpointer val)
1507 {
1508 Id *id;
1509 AgentDomainInfo *info;
1510
1511 if (val == NULL)
1512 return 0;
1513
1514 mono_loader_lock ();
1515
1516 mono_domain_lock (domain);
1517
1518 if (!domain_jit_info (domain)->agent_info)
1519 domain_jit_info (domain)->agent_info = g_new0 (AgentDomainInfo, 1);
1520 info = domain_jit_info (domain)->agent_info;
1521 if (info->val_to_id [type] == NULL)
1522 info->val_to_id [type] = g_hash_table_new (mono_aligned_addr_hash, NULL);
1523
1524 id = g_hash_table_lookup (info->val_to_id [type], val);
1525 if (id) {
1526 mono_domain_unlock (domain);
1527 mono_loader_unlock ();
1528 return id->id;
1529 }
1530
1531 id = g_new0 (Id, 1);
1532 /* Reserve id 0 */
1533 id->id = ids [type]->len + 1;
1534 id->domain = domain;
1535 id->data.val = val;
1536
1537 g_hash_table_insert (info->val_to_id [type], val, id);
1538
1539 mono_domain_unlock (domain);
1540
1541 g_ptr_array_add (ids [type], id);
1542
1543 mono_loader_unlock ();
1544
1545 return id->id;
1546 }
1547
1548 static inline gpointer
1549 decode_ptr_id (guint8 *buf, guint8 **endbuf, guint8 *limit, IdType type, MonoDomain **domain, int *err)
1550 {
1551 Id *res;
1552
1553 int id = decode_id (buf, endbuf, limit);
1554
1555 *err = 0;
1556 if (domain)
1557 *domain = NULL;
1558
1559 if (id == 0)
1560 return NULL;
1561
1562 // FIXME: error handling
1563 mono_loader_lock ();
1564 g_assert (id > 0 && id <= ids [type]->len);
1565
1566 res = g_ptr_array_index (ids [type], GPOINTER_TO_INT (id - 1));
1567 mono_loader_unlock ();
1568
1569 if (res->domain == NULL) {
1570 *err = ERR_UNLOADED;
1571 return NULL;
1572 }
1573
1574 if (domain)
1575 *domain = res->domain;
1576
1577 return res->data.val;
1578 }
1579
1580 static inline void
1581 buffer_add_ptr_id (Buffer *buf, MonoDomain *domain, IdType type, gpointer val)
1582 {
1583 buffer_add_id (buf, get_id (domain, type, val));
1584 }
1585
1586 static inline MonoClass*
1587 decode_typeid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1588 {
1589 return decode_ptr_id (buf, endbuf, limit, ID_TYPE, domain, err);
1590 }
1591
1592 static inline MonoAssembly*
1593 decode_assemblyid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1594 {
1595 return decode_ptr_id (buf, endbuf, limit, ID_ASSEMBLY, domain, err);
1596 }
1597
1598 static inline MonoImage*
1599 decode_moduleid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1600 {
1601 return decode_ptr_id (buf, endbuf, limit, ID_MODULE, domain, err);
1602 }
1603
1604 static inline MonoMethod*
1605 decode_methodid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1606 {
1607 return decode_ptr_id (buf, endbuf, limit, ID_METHOD, domain, err);
1608 }
1609
1610 static inline MonoClassField*
1611 decode_fieldid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1612 {
1613 return decode_ptr_id (buf, endbuf, limit, ID_FIELD, domain, err);
1614 }
1615
1616 static inline MonoDomain*
1617 decode_domainid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1618 {
1619 return decode_ptr_id (buf, endbuf, limit, ID_DOMAIN, domain, err);
1620 }
1621
1622 static inline MonoProperty*
1623 decode_propertyid (guint8 *buf, guint8 **endbuf, guint8 *limit, MonoDomain **domain, int *err)
1624 {
1625 return decode_ptr_id (buf, endbuf, limit, ID_PROPERTY, domain, err);
1626 }
1627
1628 static inline void
1629 buffer_add_typeid (Buffer *buf, MonoDomain *domain, MonoClass *klass)
1630 {
1631 buffer_add_ptr_id (buf, domain, ID_TYPE, klass);
1632 }
1633
1634 static inline void
1635 buffer_add_methodid (Buffer *buf, MonoDomain *domain, MonoMethod *method)
1636 {
1637 buffer_add_ptr_id (buf, domain, ID_METHOD, method);
1638 }
1639
1640 static inline void
1641 buffer_add_assemblyid (Buffer *buf, MonoDomain *domain, MonoAssembly *assembly)
1642 {
1643 buffer_add_ptr_id (buf, domain, ID_ASSEMBLY, assembly);
1644 }
1645
1646 static inline void
1647 buffer_add_moduleid (Buffer *buf, MonoDomain *domain, MonoImage *image)
1648 {
1649 buffer_add_ptr_id (buf, domain, ID_MODULE, image);
1650 }
1651
1652 static inline void
1653 buffer_add_fieldid (Buffer *buf, MonoDomain *domain, MonoClassField *field)
1654 {
1655 buffer_add_ptr_id (buf, domain, ID_FIELD, field);
1656 }
1657
1658 static inline void
1659 buffer_add_propertyid (Buffer *buf, MonoDomain *domain, MonoProperty *property)
1660 {
1661 buffer_add_ptr_id (buf, domain, ID_PROPERTY, property);
1662 }
1663
1664 static inline void
1665 buffer_add_domainid (Buffer *buf, MonoDomain *domain)
1666 {
1667 buffer_add_ptr_id (buf, domain, ID_DOMAIN, domain);
1668 }
1669
1670 static void invoke_method (void);
1671
1672 /*
1673 * SUSPEND/RESUME
1674 */
1675
1676 /*
1677 * save_thread_context:
1678 *
1679 * Set CTX as the current threads context which is used for computing stack traces.
1680 * This function is signal-safe.
1681 */
1682 static void
1683 save_thread_context (MonoContext *ctx)
1684 {
1685 DebuggerTlsData *tls;
1686
1687 tls = TlsGetValue (debugger_tls_id);
1688 g_assert (tls);
1689
1690 if (ctx) {
1691 memcpy (&tls->ctx, ctx, sizeof (MonoContext));
1692 } else {
1693 #ifdef MONO_INIT_CONTEXT_FROM_CURRENT
1694 MONO_INIT_CONTEXT_FROM_CURRENT (&tls->ctx);
1695 #else
1696 MONO_INIT_CONTEXT_FROM_FUNC (&tls->ctx, save_thread_context);
1697 #endif
1698 }
1699
1700 tls->lmf = mono_get_lmf ();
1701 tls->domain = mono_domain_get ();
1702 tls->has_context = TRUE;
1703 }
1704
1705 /* The number of times the runtime is suspended */
1706 static gint32 suspend_count;
1707
1708 /* Number of threads suspended */
1709 /*
1710 * If this is equal to the size of thread_to_tls, the runtime is considered
1711 * suspended.
1712 */
1713 static gint32 threads_suspend_count;
1714
1715 static mono_mutex_t suspend_mutex;
1716
1717 /* Cond variable used to wait for suspend_count becoming 0 */
1718 static mono_cond_t suspend_cond;
1719
1720 /* Semaphore used to wait for a thread becoming suspended */
1721 static MonoSemType suspend_sem;
1722
1723 static void
1724 suspend_init (void)
1725 {
1726 mono_mutex_init (&suspend_mutex, NULL);
1727 mono_cond_init (&suspend_cond, NULL);
1728 MONO_SEM_INIT (&suspend_sem, 0);
1729 }
1730
1731 typedef struct
1732 {
1733 StackFrameInfo last_frame;
1734 gboolean last_frame_set;
1735 MonoContext ctx;
1736 gpointer lmf;
1737 } GetLastFrameUserData;
1738
1739 static gboolean
1740 get_last_frame (StackFrameInfo *info, MonoContext *ctx, gpointer user_data)
1741 {
1742 GetLastFrameUserData *data = user_data;
1743
1744 if (info->type == FRAME_TYPE_MANAGED_TO_NATIVE)
1745 return FALSE;
1746
1747 if (!data->last_frame_set) {
1748 /* Store the last frame */
1749 memcpy (&data->last_frame, info, sizeof (StackFrameInfo));
1750 data->last_frame_set = TRUE;
1751 return FALSE;
1752 } else {
1753 /* Store the context/lmf for the frame above the last frame */
1754 memcpy (&data->ctx, ctx, sizeof (MonoContext));
1755 data->lmf = info->lmf;
1756
1757 return TRUE;
1758 }
1759 }
1760
1761 /*
1762 * mono_debugger_agent_thread_interrupt:
1763 *
1764 * Called by the abort signal handler.
1765 * Should be signal safe.
1766 */
1767 gboolean
1768 mono_debugger_agent_thread_interrupt (void *sigctx, MonoJitInfo *ji)
1769 {
1770 DebuggerTlsData *tls;
1771
1772 if (!inited)
1773 return FALSE;
1774
1775 tls = TlsGetValue (debugger_tls_id);
1776 if (!tls)
1777 return FALSE;
1778
1779 /*
1780 * OSX can (and will) coalesce signals, so sending multiple pthread_kills does not
1781 * guarantee the signal handler will be called that many times. Instead of tracking
1782 * interrupt_count on osx, we use this as a boolean flag to determine if a interrupt
1783 * has been requested that hasn't been handled yet, otherwise we can have threads
1784 * refuse to die when VM_EXIT is called
1785 */
1786 #if defined(__APPLE__)
1787 if (InterlockedCompareExchange (&tls->interrupt_count, 0, 1) == 0)
1788 return FALSE;
1789 #else
1790 /*
1791 * We use interrupt_count to determine whenever this interrupt should be processed
1792 * by us or the normal interrupt processing code in the signal handler.
1793 * There is no race here with notify_thread (), since the signal is sent after
1794 * incrementing interrupt_count.
1795 */
1796 if (tls->interrupt_count == 0)
1797 return FALSE;
1798
1799 InterlockedDecrement (&tls->interrupt_count);
1800 #endif
1801
1802 // FIXME: Races when the thread leaves managed code before hitting a single step
1803 // event.
1804
1805 if (ji) {
1806 /* Running managed code, will be suspended by the single step code */
1807 DEBUG (1, printf ("[%p] Received interrupt while at %s(%p), continuing.\n", (gpointer)GetCurrentThreadId (), ji->method->name, mono_arch_ip_from_context (sigctx)));
1808 return TRUE;
1809 } else {
1810 /*
1811 * Running native code, will be suspended when it returns to/enters
1812 * managed code. Treat it as already suspended.
1813 * This might interrupt the code in process_single_step_inner (), we use the
1814 * tls->suspending flag to avoid races when that happens.
1815 */
1816 if (!tls->suspended && !tls->suspending) {
1817 MonoContext ctx;
1818 GetLastFrameUserData data;
1819
1820 // FIXME: printf is not signal safe, but this is only used during
1821 // debugger debugging
1822 DEBUG (1, printf ("[%p] Received interrupt while at %p, treating as suspended.\n", (gpointer)GetCurrentThreadId (), mono_arch_ip_from_context (sigctx)));
1823 //save_thread_context (&ctx);
1824
1825 if (!tls->thread)
1826 /* Already terminated */
1827 return TRUE;
1828
1829 /*
1830 * We are in a difficult position: we want to be able to provide stack
1831 * traces for this thread, but we can't use the current ctx+lmf, since
1832 * the thread is still running, so it might return to managed code,
1833 * making these invalid.
1834 * So we start a stack walk and save the first frame, along with the
1835 * parent frame's ctx+lmf. This (hopefully) works because the thread will be
1836 * suspended when it returns to managed code, so the parent's ctx should
1837 * remain valid.
1838 */
1839 data.last_frame_set = FALSE;
1840 if (sigctx) {
1841 mono_arch_sigctx_to_monoctx (sigctx, &ctx);
1842 mono_jit_walk_stack_from_ctx_in_thread (get_last_frame, mono_domain_get (), &ctx, FALSE, tls->thread, mono_get_lmf (), &data);
1843 }
1844 if (data.last_frame_set) {
1845 memcpy (&tls->async_last_frame, &data.last_frame, sizeof (StackFrameInfo));
1846 memcpy (&tls->async_ctx, &data.ctx, sizeof (MonoContext));
1847 tls->async_lmf = data.lmf;
1848 tls->has_async_ctx = TRUE;
1849 tls->domain = mono_domain_get ();
1850 memcpy (&tls->ctx, &ctx, sizeof (MonoContext));
1851 } else {
1852 tls->has_async_ctx = FALSE;
1853 }
1854
1855 mono_memory_barrier ();
1856
1857 tls->suspended = TRUE;
1858 MONO_SEM_POST (&suspend_sem);
1859 }
1860 return TRUE;
1861 }
1862 }
1863
1864 #ifdef HOST_WIN32
1865 static void CALLBACK notify_thread_apc (ULONG_PTR param)
1866 {
1867 //DebugBreak ();
1868 mono_debugger_agent_thread_interrupt (NULL, NULL);
1869 }
1870 #endif /* HOST_WIN32 */
1871
1872 /*
1873 * reset_native_thread_suspend_state:
1874 *
1875 * Reset the suspended flag on native threads
1876 */
1877 static void
1878 reset_native_thread_suspend_state (gpointer key, gpointer value, gpointer user_data)
1879 {
1880 DebuggerTlsData *tls = value;
1881
1882 if (!tls->really_suspended && tls->suspended)
1883 tls->suspended = FALSE;
1884 }
1885
1886 /*
1887 * notify_thread:
1888 *
1889 * Notify a thread that it needs to suspend.
1890 */
1891 static void
1892 notify_thread (gpointer key, gpointer value, gpointer user_data)
1893 {
1894 MonoInternalThread *thread = key;
1895 DebuggerTlsData *tls = value;
1896 gsize tid = thread->tid;
1897
1898 if (GetCurrentThreadId () != tid) {
1899 DEBUG(1, fprintf (log_file, "[%p] Interrupting %p...\n", (gpointer)GetCurrentThreadId (), (gpointer)tid));
1900
1901 /*
1902 * OSX can (and will) coalesce signals, so sending multiple pthread_kills does not
1903 * guarantee the signal handler will be called that many times. Instead of tracking
1904 * interrupt_count on osx, we use this as a boolean flag to determine if a interrupt
1905 * has been requested that hasn't been handled yet, otherwise we can have threads
1906 * refuse to die when VM_EXIT is called
1907 */
1908 #if defined(__APPLE__)
1909 if (InterlockedCompareExchange (&tls->interrupt_count, 1, 0) == 1)
1910 return;
1911 #else
1912 /*
1913 * Maybe we could use the normal interrupt infrastructure, but that does a lot
1914 * of things like breaking waits etc. which we don't want.
1915 */
1916 InterlockedIncrement (&tls->interrupt_count);
1917 #endif
1918
1919 /* This is _not_ equivalent to ves_icall_System_Threading_Thread_Abort () */
1920 #ifdef HOST_WIN32
1921 QueueUserAPC (notify_thread_apc, thread->handle, NULL);
1922 #else
1923 pthread_kill ((pthread_t) tid, mono_thread_get_abort_signal ());
1924 #endif
1925 }
1926 }
1927
1928 static void
1929 process_suspend (DebuggerTlsData *tls, MonoContext *ctx)
1930 {
1931 guint8 *ip = MONO_CONTEXT_GET_IP (ctx);
1932 MonoJitInfo *ji;
1933
1934 if (debugger_thread_id == GetCurrentThreadId ())
1935 return;
1936
1937 /* Prevent races with mono_debugger_agent_thread_interrupt () */
1938 if (suspend_count - tls->resume_count > 0)
1939 tls->suspending = TRUE;
1940
1941 DEBUG(1, fprintf (log_file, "[%p] Received single step event for suspending.\n", (gpointer)GetCurrentThreadId ()));
1942
1943 if (suspend_count - tls->resume_count == 0) {
1944 /*
1945 * We are executing a single threaded invoke but the single step for
1946 * suspending is still active.
1947 * FIXME: This slows down single threaded invokes.
1948 */
1949 DEBUG(1, fprintf (log_file, "[%p] Ignored during single threaded invoke.\n", (gpointer)GetCurrentThreadId ()));
1950 return;
1951 }
1952
1953 ji = mini_jit_info_table_find (mono_domain_get (), (char*)ip, NULL);
1954
1955 /* Can't suspend in these methods */
1956 if (ji->method->klass == mono_defaults.string_class && (!strcmp (ji->method->name, "memset") || strstr (ji->method->name, "memcpy")))
1957 return;
1958
1959 save_thread_context (ctx);
1960
1961 suspend_current ();
1962 }
1963
1964 /*
1965 * suspend_vm:
1966 *
1967 * Increase the suspend count of the VM. While the suspend count is greater
1968 * than 0, runtime threads are suspended at certain points during execution.
1969 */
1970 static void
1971 suspend_vm (void)
1972 {
1973 mono_loader_lock ();
1974
1975 mono_mutex_lock (&suspend_mutex);
1976
1977 suspend_count ++;
1978
1979 DEBUG(1, fprintf (log_file, "[%p] Suspending vm...\n", (gpointer)GetCurrentThreadId ()));
1980
1981 if (suspend_count == 1) {
1982 // FIXME: Is it safe to call this inside the lock ?
1983 start_single_stepping ();
1984 mono_g_hash_table_foreach (thread_to_tls, notify_thread, NULL);
1985 }
1986
1987 mono_mutex_unlock (&suspend_mutex);
1988
1989 mono_loader_unlock ();
1990 }
1991
1992 /*
1993 * resume_vm:
1994 *
1995 * Decrease the suspend count of the VM. If the count reaches 0, runtime threads
1996 * are resumed.
1997 */
1998 static void
1999 resume_vm (void)
2000 {
2001 int err;
2002
2003 g_assert (debugger_thread_id == GetCurrentThreadId ());
2004
2005 mono_loader_lock ();
2006
2007 mono_mutex_lock (&suspend_mutex);
2008
2009 g_assert (suspend_count > 0);
2010 suspend_count --;
2011
2012 DEBUG(1, fprintf (log_file, "[%p] Resuming vm...\n", (gpointer)GetCurrentThreadId ()));
2013
2014 if (suspend_count == 0) {
2015 // FIXME: Is it safe to call this inside the lock ?
2016 stop_single_stepping ();
2017 mono_g_hash_table_foreach (thread_to_tls, reset_native_thread_suspend_state, NULL);
2018 }
2019
2020 /* Signal this even when suspend_count > 0, since some threads might have resume_count > 0 */
2021 err = mono_cond_broadcast (&suspend_cond);
2022 g_assert (err == 0);
2023
2024 mono_mutex_unlock (&suspend_mutex);
2025 //g_assert (err == 0);
2026
2027 mono_loader_unlock ();
2028 }
2029
2030 /*
2031 * resume_thread:
2032 *
2033 * Resume just one thread.
2034 */
2035 static void
2036 resume_thread (MonoInternalThread *thread)
2037 {
2038 int err;
2039 DebuggerTlsData *tls;
2040
2041 g_assert (debugger_thread_id == GetCurrentThreadId ());
2042
2043 mono_loader_lock ();
2044
2045 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
2046 g_assert (tls);
2047
2048 mono_mutex_lock (&suspend_mutex);
2049
2050 g_assert (suspend_count > 0);
2051
2052 DEBUG(1, fprintf (log_file, "[%p] Resuming thread...\n", (gpointer)(gssize)thread->tid));
2053
2054 tls->resume_count += suspend_count;
2055
2056 /*
2057 * Signal suspend_count without decreasing suspend_count, the threads will wake up
2058 * but only the one whose resume_count field is > 0 will be resumed.
2059 */
2060 err = mono_cond_broadcast (&suspend_cond);
2061 g_assert (err == 0);
2062
2063 mono_mutex_unlock (&suspend_mutex);
2064 //g_assert (err == 0);
2065
2066 mono_loader_unlock ();
2067 }
2068
2069 static void
2070 invalidate_frames (DebuggerTlsData *tls)
2071 {
2072 int i;
2073
2074 if (!tls)
2075 tls = TlsGetValue (debugger_tls_id);
2076 g_assert (tls);
2077
2078 for (i = 0; i < tls->frame_count; ++i) {
2079 if (tls->frames [i]->jit)
2080 mono_debug_free_method_jit_info (tls->frames [i]->jit);
2081 g_free (tls->frames [i]);
2082 }
2083 g_free (tls->frames);
2084 tls->frame_count = 0;
2085 tls->frames = NULL;
2086 }
2087
2088 /*
2089 * suspend_current:
2090 *
2091 * Suspend the current thread until the runtime is resumed. If the thread has a
2092 * pending invoke, then the invoke is executed before this function returns.
2093 */
2094 static void
2095 suspend_current (void)
2096 {
2097 int err;
2098 DebuggerTlsData *tls;
2099
2100 g_assert (debugger_thread_id != GetCurrentThreadId ());
2101
2102 if (mono_loader_lock_is_owned_by_self ()) {
2103 /*
2104 * If we own the loader mutex, can't suspend until we release it, since the
2105 * whole runtime can deadlock otherwise.
2106 */
2107 return;
2108 }
2109
2110 tls = TlsGetValue (debugger_tls_id);
2111 g_assert (tls);
2112
2113 mono_mutex_lock (&suspend_mutex);
2114
2115 tls->suspending = FALSE;
2116 tls->really_suspended = TRUE;
2117
2118 if (!tls->suspended) {
2119 tls->suspended = TRUE;
2120 MONO_SEM_POST (&suspend_sem);
2121 }
2122
2123 DEBUG(1, fprintf (log_file, "[%p] Suspended.\n", (gpointer)GetCurrentThreadId ()));
2124
2125 while (suspend_count - tls->resume_count > 0) {
2126 #ifdef HOST_WIN32
2127 if (WAIT_TIMEOUT == WaitForSingleObject(suspend_cond, 0))
2128 {
2129 mono_mutex_unlock (&suspend_mutex);
2130 Sleep(0);
2131 mono_mutex_lock (&suspend_mutex);
2132 }
2133 else
2134 {
2135 }
2136 #else
2137 err = mono_cond_wait (&suspend_cond, &suspend_mutex);
2138 g_assert (err == 0);
2139 #endif
2140 }
2141
2142 tls->suspended = FALSE;
2143 tls->really_suspended = FALSE;
2144
2145 threads_suspend_count --;
2146
2147 mono_mutex_unlock (&suspend_mutex);
2148
2149 DEBUG(1, fprintf (log_file, "[%p] Resumed.\n", (gpointer)GetCurrentThreadId ()));
2150
2151 if (tls->invoke) {
2152 /* Save the original context */
2153 tls->invoke->has_ctx = TRUE;
2154 memcpy (&tls->invoke->ctx, &tls->ctx, sizeof (MonoContext));
2155
2156 invoke_method ();
2157 }
2158
2159 /* The frame info becomes invalid after a resume */
2160 tls->has_context = FALSE;
2161 tls->has_async_ctx = FALSE;
2162 invalidate_frames (NULL);
2163 }
2164
2165 static void
2166 count_thread (gpointer key, gpointer value, gpointer user_data)
2167 {
2168 DebuggerTlsData *tls = value;
2169
2170 if (!tls->suspended && !tls->terminated)
2171 *(int*)user_data = *(int*)user_data + 1;
2172 }
2173
2174 static int
2175 count_threads_to_wait_for (void)
2176 {
2177 int count = 0;
2178
2179 mono_loader_lock ();
2180 mono_g_hash_table_foreach (thread_to_tls, count_thread, &count);
2181 mono_loader_unlock ();
2182
2183 return count;
2184 }
2185
2186 /*
2187 * wait_for_suspend:
2188 *
2189 * Wait until the runtime is completely suspended.
2190 */
2191 static void
2192 wait_for_suspend (void)
2193 {
2194 int nthreads, nwait, err;
2195 gboolean waited = FALSE;
2196
2197 // FIXME: Threads starting/stopping ?
2198 mono_loader_lock ();
2199 nthreads = mono_g_hash_table_size (thread_to_tls);
2200 mono_loader_unlock ();
2201
2202 while (TRUE) {
2203 nwait = count_threads_to_wait_for ();
2204 if (nwait) {
2205 DEBUG(1, fprintf (log_file, "Waiting for %d(%d) threads to suspend...\n", nwait, nthreads));
2206 err = MONO_SEM_WAIT (&suspend_sem);
2207 g_assert (err == 0);
2208 waited = TRUE;
2209 } else {
2210 break;
2211 }
2212 }
2213
2214 if (waited)
2215 DEBUG(1, fprintf (log_file, "%d threads suspended.\n", nthreads));
2216 }
2217
2218 /*
2219 * is_suspended:
2220 *
2221 * Return whenever the runtime is suspended.
2222 */
2223 static gboolean
2224 is_suspended (void)
2225 {
2226 return count_threads_to_wait_for () == 0;
2227 }
2228
2229 /*
2230 * find_seq_point_for_native_offset:
2231 *
2232 * Find the sequence point corresponding to the native offset NATIVE_OFFSET, which
2233 * should be the location of a sequence point.
2234 */
2235 static SeqPoint*
2236 find_seq_point_for_native_offset (MonoDomain *domain, MonoMethod *method, gint32 native_offset, MonoSeqPointInfo **info)
2237 {
2238 MonoSeqPointInfo *seq_points;
2239 int i;
2240
2241 mono_domain_lock (domain);
2242 seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, method);
2243 mono_domain_unlock (domain);
2244 g_assert (seq_points);
2245
2246 *info = seq_points;
2247
2248 for (i = 0; i < seq_points->len; ++i) {
2249 if (seq_points->seq_points [i].native_offset == native_offset)
2250 return &seq_points->seq_points [i];
2251 }
2252
2253 return NULL;
2254 }
2255
2256 /*
2257 * find_seq_point:
2258 *
2259 * Find the sequence point corresponding to the IL offset IL_OFFSET, which
2260 * should be the location of a sequence point.
2261 */
2262 static SeqPoint*
2263 find_seq_point (MonoDomain *domain, MonoMethod *method, gint32 il_offset, MonoSeqPointInfo **info)
2264 {
2265 MonoSeqPointInfo *seq_points;
2266 int i;
2267
2268 mono_domain_lock (domain);
2269 seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, method);
2270 mono_domain_unlock (domain);
2271 g_assert (seq_points);
2272
2273 *info = seq_points;
2274
2275 for (i = 0; i < seq_points->len; ++i) {
2276 if (seq_points->seq_points [i].il_offset == il_offset)
2277 return &seq_points->seq_points [i];
2278 }
2279
2280 return NULL;
2281 }
2282
2283 /*
2284 * compute_il_offset:
2285 *
2286 * Compute the IL offset corresponding to NATIVE_OFFSET, which should be
2287 * a location of a sequence point.
2288 * We use this function instead of mono_debug_il_offset_from_address () etc,
2289 * which doesn't seem to work in a lot of cases.
2290 */
2291 static gint32
2292 compute_il_offset (MonoDomain *domain, MonoMethod *method, gint32 native_offset)
2293 {
2294 MonoSeqPointInfo *seq_points;
2295 int i, last_il_offset, seq_il_offset, seq_native_offset;
2296
2297 mono_domain_lock (domain);
2298 seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, method);
2299 mono_domain_unlock (domain);
2300 g_assert (seq_points);
2301
2302 last_il_offset = -1;
2303
2304 /* Find the sequence point */
2305 for (i = 0; i < seq_points->len; ++i) {
2306 seq_il_offset = seq_points->seq_points [i].il_offset;
2307 seq_native_offset = seq_points->seq_points [i].native_offset;
2308
2309 if (seq_native_offset > native_offset)
2310 break;
2311 last_il_offset = seq_il_offset;
2312 }
2313
2314 return last_il_offset;
2315 }
2316
2317 typedef struct {
2318 DebuggerTlsData *tls;
2319 GSList *frames;
2320 } ComputeFramesUserData;
2321
2322 static gboolean
2323 process_frame (StackFrameInfo *info, MonoContext *ctx, gpointer user_data)
2324 {
2325 ComputeFramesUserData *ud = user_data;
2326 StackFrame *frame;
2327 MonoMethod *method;
2328
2329 if (info->type != FRAME_TYPE_MANAGED) {
2330 if (info->type == FRAME_TYPE_DEBUGGER_INVOKE) {
2331 /* Mark the last frame as an invoke frame */
2332 if (ud->frames)
2333 ((StackFrame*)ud->frames->data)->flags |= FRAME_FLAG_DEBUGGER_INVOKE;
2334 }
2335 return FALSE;
2336 }
2337
2338 if (info->ji)
2339 method = info->ji->method;
2340 else
2341 method = info->method;
2342
2343 if (!method || (method->wrapper_type && method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD))
2344 return FALSE;
2345
2346 if (info->il_offset == -1) {
2347 /* Can't use compute_il_offset () since ip doesn't point precisely at at a seq point */
2348 info->il_offset = mono_debug_il_offset_from_address (method, info->domain, info->native_offset);
2349 }
2350
2351 DEBUG (1, fprintf (stderr, "\tFrame: %s %d %d %d\n", mono_method_full_name (method, TRUE), info->native_offset, info->il_offset, info->managed));
2352
2353 if (!info->managed && method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD) {
2354 /*
2355 * mono_arch_find_jit_info () returns the context stored in the LMF for
2356 * native frames, but it should unwind once. This is why we have duplicate
2357 * frames on the stack sometimes.
2358 * !managed also seems to be set for dynamic methods.
2359 */
2360 return FALSE;
2361 }
2362
2363 frame = g_new0 (StackFrame, 1);
2364 frame->method = method;
2365 frame->il_offset = info->il_offset;
2366 if (ctx) {
2367 frame->ctx = *ctx;
2368 frame->has_ctx = TRUE;
2369 }
2370 frame->domain = info->domain;
2371
2372 ud->frames = g_slist_append (ud->frames, frame);
2373
2374 return FALSE;
2375 }
2376
2377 static void
2378 compute_frame_info (MonoInternalThread *thread, DebuggerTlsData *tls)
2379 {
2380 ComputeFramesUserData user_data;
2381 GSList *tmp;
2382 int i, findex, new_frame_count;
2383 StackFrame **new_frames, *f;
2384
2385 // FIXME: Locking on tls
2386 if (tls->frames && tls->frames_up_to_date)
2387 return;
2388
2389 DEBUG(1, fprintf (log_file, "Frames for %p(tid=%lx):\n", thread, (glong)thread->tid));
2390
2391 user_data.tls = tls;
2392 user_data.frames = NULL;
2393 if (tls->terminated) {
2394 tls->frame_count = 0;
2395 return;
2396 } if (!tls->really_suspended && tls->has_async_ctx) {
2397 /* Have to use the state saved by the signal handler */
2398 process_frame (&tls->async_last_frame, NULL, &user_data);
2399 mono_jit_walk_stack_from_ctx_in_thread (process_frame, tls->domain, &tls->async_ctx, FALSE, thread, tls->async_lmf, &user_data);
2400 } else if (tls->has_context) {
2401 mono_jit_walk_stack_from_ctx_in_thread (process_frame, tls->domain, &tls->ctx, FALSE, thread, tls->lmf, &user_data);
2402 } else {
2403 // FIXME:
2404 tls->frame_count = 0;
2405 return;
2406 }
2407
2408 new_frame_count = g_slist_length (user_data.frames);
2409 new_frames = g_new0 (StackFrame*, new_frame_count);
2410 findex = 0;
2411 for (tmp = user_data.frames; tmp; tmp = tmp->next) {
2412 f = tmp->data;
2413
2414 /*
2415 * Reuse the id for already existing stack frames, so invokes don't invalidate
2416 * the still valid stack frames.
2417 */
2418 for (i = 0; i < tls->frame_count; ++i) {
2419 if (MONO_CONTEXT_GET_SP (&tls->frames [i]->ctx) == MONO_CONTEXT_GET_SP (&f->ctx)) {
2420 f->id = tls->frames [i]->id;
2421 break;
2422 }
2423 }
2424
2425 if (i >= tls->frame_count)
2426 f->id = InterlockedIncrement (&frame_id);
2427
2428 new_frames [findex ++] = f;
2429 }
2430
2431 g_slist_free (user_data.frames);
2432
2433 invalidate_frames (tls);
2434
2435 tls->frames = new_frames;
2436 tls->frame_count = new_frame_count;
2437 tls->frames_up_to_date = TRUE;
2438 }
2439
2440 /*
2441 * EVENT HANDLING
2442 */
2443
2444 /*
2445 * create_event_list:
2446 *
2447 * Return a list of event request ids matching EVENT, starting from REQS, which
2448 * can be NULL to include all event requests. Set SUSPEND_POLICY to the suspend
2449 * policy.
2450 * We return request ids, instead of requests, to simplify threading, since
2451 * requests could be deleted anytime when the loader lock is not held.
2452 * LOCKING: Assumes the loader lock is held.
2453 */
2454 static GSList*
2455 create_event_list (EventKind event, GPtrArray *reqs, MonoJitInfo *ji, MonoException *exc, int *suspend_policy)
2456 {
2457 int i, j;
2458 GSList *events = NULL;
2459
2460 *suspend_policy = SUSPEND_POLICY_NONE;
2461
2462 if (!reqs)
2463 reqs = event_requests;
2464
2465 if (!reqs)
2466 return NULL;
2467
2468 for (i = 0; i < reqs->len; ++i) {
2469 EventRequest *req = g_ptr_array_index (reqs, i);
2470 if (req->event_kind == event) {
2471 gboolean filtered = FALSE;
2472
2473 /* Apply filters */
2474 for (j = 0; j < req->nmodifiers; ++j) {
2475 Modifier *mod = &req->modifiers [j];
2476
2477 if (mod->kind == MOD_KIND_COUNT) {
2478 filtered = TRUE;
2479 if (mod->data.count > 0) {
2480 if (mod->data.count > 0) {
2481 mod->data.count --;
2482 if (mod->data.count == 0)
2483 filtered = FALSE;
2484 }
2485 }
2486 } else if (mod->kind == MOD_KIND_THREAD_ONLY) {
2487 if (mod->data.thread != mono_thread_internal_current ())
2488 filtered = TRUE;
2489 } else if (mod->kind == MOD_KIND_EXCEPTION_ONLY && exc) {
2490 if (mod->data.exc_class && !mono_class_is_assignable_from (mod->data.exc_class, exc->object.vtable->klass))
2491 filtered = TRUE;
2492 } else if (mod->kind == MOD_KIND_ASSEMBLY_ONLY && ji) {
2493 int k;
2494 gboolean found = FALSE;
2495 MonoAssembly **assemblies = mod->data.assemblies;
2496
2497 if (assemblies) {
2498 for (k = 0; assemblies [k]; ++k)
2499 if (assemblies [k] == ji->method->klass->image->assembly)
2500 found = TRUE;
2501 }
2502 if (!found)
2503 filtered = TRUE;
2504 }
2505 }
2506
2507 if (!filtered) {
2508 *suspend_policy = MAX (*suspend_policy, req->suspend_policy);
2509 events = g_slist_append (events, GINT_TO_POINTER (req->id));
2510 }
2511 }
2512 }
2513
2514 /* Send a VM START/DEATH event by default */
2515 if (event == EVENT_KIND_VM_START)
2516 events = g_slist_append (events, GINT_TO_POINTER (0));
2517 if (event == EVENT_KIND_VM_DEATH)
2518 events = g_slist_append (events, GINT_TO_POINTER (0));
2519
2520 return events;
2521 }
2522
2523 static G_GNUC_UNUSED const char*
2524 event_to_string (EventKind event)
2525 {
2526 switch (event) {
2527 case EVENT_KIND_VM_START: return "VM_START";
2528 case EVENT_KIND_VM_DEATH: return "VM_DEATH";
2529 case EVENT_KIND_THREAD_START: return "THREAD_START";
2530 case EVENT_KIND_THREAD_DEATH: return "THREAD_DEATH";
2531 case EVENT_KIND_APPDOMAIN_CREATE: return "APPDOMAIN_CREATE";
2532 case EVENT_KIND_APPDOMAIN_UNLOAD: return "APPDOMAIN_UNLOAD";
2533 case EVENT_KIND_METHOD_ENTRY: return "METHOD_ENTRY";
2534 case EVENT_KIND_METHOD_EXIT: return "METHOD_EXIT";
2535 case EVENT_KIND_ASSEMBLY_LOAD: return "ASSEMBLY_LOAD";
2536 case EVENT_KIND_ASSEMBLY_UNLOAD: return "ASSEMBLY_UNLOAD";
2537 case EVENT_KIND_BREAKPOINT: return "BREAKPOINT";
2538 case EVENT_KIND_STEP: return "STEP";
2539 case EVENT_KIND_TYPE_LOAD: return "TYPE_LOAD";
2540 case EVENT_KIND_EXCEPTION: return "EXCEPTION";
2541 default:
2542 g_assert_not_reached ();
2543 }
2544 }
2545
2546 /*
2547 * process_event:
2548 *
2549 * Send an event to the client, suspending the vm if needed.
2550 * LOCKING: Since this can suspend the calling thread, no locks should be held
2551 * by the caller.
2552 * The EVENTS list is freed by this function.
2553 */
2554 static void
2555 process_event (EventKind event, gpointer arg, gint32 il_offset, MonoContext *ctx, GSList *events, int suspend_policy)
2556 {
2557 Buffer buf;
2558 GSList *l;
2559 MonoDomain *domain = mono_domain_get ();
2560 MonoThread *thread;
2561
2562 if (!inited)
2563 return;
2564
2565 if (!vm_start_event_sent && event != EVENT_KIND_VM_START)
2566 // FIXME: We miss those events
2567 return;
2568
2569 if (vm_death_event_sent)
2570 return;
2571
2572 if (mono_runtime_is_shutting_down () && event != EVENT_KIND_VM_DEATH)
2573 return;
2574
2575 if (disconnected)
2576 return;
2577
2578 if (events == NULL)
2579 return;
2580
2581 if (debugger_thread_id == GetCurrentThreadId () && event != EVENT_KIND_VM_DEATH)
2582 // FIXME: Send these with a NULL thread, don't suspend the current thread
2583 return;
2584
2585 buffer_init (&buf, 128);
2586 buffer_add_byte (&buf, suspend_policy);
2587 buffer_add_int (&buf, g_slist_length (events)); // n of events
2588
2589 for (l = events; l; l = l->next) {
2590 buffer_add_byte (&buf, event); // event kind
2591 buffer_add_int (&buf, GPOINTER_TO_INT (l->data)); // request id
2592
2593 thread = mono_thread_current ();
2594
2595 if (event == EVENT_KIND_VM_START)
2596 thread = arg;
2597 else if (event == EVENT_KIND_THREAD_START)
2598 g_assert (mono_thread_internal_current () == arg);
2599
2600 buffer_add_objid (&buf, (MonoObject*)thread); // thread
2601
2602 switch (event) {
2603 case EVENT_KIND_THREAD_START:
2604 case EVENT_KIND_THREAD_DEATH:
2605 break;
2606 case EVENT_KIND_APPDOMAIN_CREATE:
2607 case EVENT_KIND_APPDOMAIN_UNLOAD:
2608 buffer_add_domainid (&buf, arg);
2609 break;
2610 case EVENT_KIND_METHOD_ENTRY:
2611 case EVENT_KIND_METHOD_EXIT:
2612 buffer_add_methodid (&buf, domain, arg);
2613 break;
2614 case EVENT_KIND_ASSEMBLY_LOAD:
2615 case EVENT_KIND_ASSEMBLY_UNLOAD:
2616 buffer_add_assemblyid (&buf, domain, arg);
2617 break;
2618 case EVENT_KIND_TYPE_LOAD:
2619 buffer_add_typeid (&buf, domain, arg);
2620 break;
2621 case EVENT_KIND_BREAKPOINT:
2622 case EVENT_KIND_STEP:
2623 buffer_add_methodid (&buf, domain, arg);
2624 buffer_add_long (&buf, il_offset);
2625 break;
2626 case EVENT_KIND_VM_START:
2627 buffer_add_domainid (&buf, mono_get_root_domain ());
2628 break;
2629 case EVENT_KIND_VM_DEATH:
2630 break;
2631 case EVENT_KIND_EXCEPTION:
2632 buffer_add_objid (&buf, (MonoObject*)arg);
2633 break;
2634 default:
2635 g_assert_not_reached ();
2636 }
2637 }
2638
2639 if (event == EVENT_KIND_VM_START) {
2640 suspend_policy = agent_config.suspend ? SUSPEND_POLICY_ALL : SUSPEND_POLICY_NONE;
2641 start_debugger_thread ();
2642 }
2643
2644 if (event == EVENT_KIND_VM_DEATH) {
2645 vm_death_event_sent = TRUE;
2646
2647 suspend_policy = SUSPEND_POLICY_NONE;
2648 }
2649
2650 if (mono_runtime_is_shutting_down ())
2651 suspend_policy = SUSPEND_POLICY_NONE;
2652
2653 if (suspend_policy != SUSPEND_POLICY_NONE) {
2654 /*
2655 * Save the thread context and start suspending before sending the packet,
2656 * since we could be receiving the resume request before send_packet ()
2657 * returns.
2658 */
2659 save_thread_context (ctx);
2660 suspend_vm ();
2661 }
2662
2663 send_packet (CMD_SET_EVENT, CMD_COMPOSITE, &buf);
2664
2665 g_slist_free (events);
2666 events = NULL;
2667
2668 if (event == EVENT_KIND_VM_START)
2669 vm_start_event_sent = TRUE;
2670
2671 DEBUG (1, fprintf (log_file, "[%p] Sent event %s, suspend=%d.\n", (gpointer)GetCurrentThreadId (), event_to_string (event), suspend_policy));
2672
2673 buffer_free (&buf);
2674
2675 switch (suspend_policy) {
2676 case SUSPEND_POLICY_NONE:
2677 break;
2678 case SUSPEND_POLICY_ALL:
2679 suspend_current ();
2680 break;
2681 case SUSPEND_POLICY_EVENT_THREAD:
2682 NOT_IMPLEMENTED;
2683 break;
2684 default:
2685 g_assert_not_reached ();
2686 }
2687 }
2688
2689 static void
2690 process_profiler_event (EventKind event, gpointer arg)
2691 {
2692 int suspend_policy;
2693 GSList *events;
2694
2695 mono_loader_lock ();
2696 events = create_event_list (event, NULL, NULL, NULL, &suspend_policy);
2697 mono_loader_unlock ();
2698
2699 process_event (event, arg, 0, NULL, events, suspend_policy);
2700 }
2701
2702 static void
2703 runtime_initialized (MonoProfiler *prof)
2704 {
2705 process_profiler_event (EVENT_KIND_VM_START, mono_thread_current ());
2706 }
2707
2708 static void
2709 runtime_shutdown (MonoProfiler *prof)
2710 {
2711 process_profiler_event (EVENT_KIND_VM_DEATH, mono_thread_current ());
2712
2713 mono_debugger_agent_cleanup ();
2714 }
2715
2716 static void
2717 thread_startup (MonoProfiler *prof, gsize tid)
2718 {
2719 MonoInternalThread *thread = mono_thread_internal_current ();
2720 MonoInternalThread *old_thread;
2721 DebuggerTlsData *tls;
2722
2723 if (tid == debugger_thread_id)
2724 return;
2725
2726 g_assert (thread->tid == tid);
2727
2728 mono_loader_lock ();
2729 old_thread = mono_g_hash_table_lookup (tid_to_thread, (gpointer)tid);
2730 mono_loader_unlock ();
2731 if (old_thread) {
2732 if (thread == old_thread) {
2733 /*
2734 * For some reason, thread_startup () might be called for the same thread
2735 * multiple times (attach ?).
2736 */
2737 DEBUG (1, fprintf (log_file, "[%p] thread_start () called multiple times for %p, ignored.\n", (gpointer)tid, (gpointer)tid));
2738 return;
2739 } else {
2740 /*
2741 * thread_end () might not be called for some threads, and the tid could
2742 * get reused.
2743 */
2744 DEBUG (1, fprintf (log_file, "[%p] Removing stale data for tid %p.\n", (gpointer)tid, (gpointer)tid));
2745 mono_loader_lock ();
2746 mono_g_hash_table_remove (thread_to_tls, old_thread);
2747 mono_g_hash_table_remove (tid_to_thread, (gpointer)tid);
2748 mono_g_hash_table_remove (tid_to_thread_obj, (gpointer)tid);
2749 mono_loader_unlock ();
2750 }
2751 }
2752
2753 tls = TlsGetValue (debugger_tls_id);
2754 g_assert (!tls);
2755 // FIXME: Free this somewhere
2756 tls = g_new0 (DebuggerTlsData, 1);
2757 tls->resume_event = CreateEvent (NULL, FALSE, FALSE, NULL);
2758 MONO_GC_REGISTER_ROOT (tls->thread);
2759 tls->thread = thread;
2760 TlsSetValue (debugger_tls_id, tls);
2761
2762 DEBUG (1, fprintf (log_file, "[%p] Thread started, obj=%p, tls=%p.\n", (gpointer)tid, thread, tls));
2763
2764 mono_loader_lock ();
2765 mono_g_hash_table_insert (thread_to_tls, thread, tls);
2766 mono_g_hash_table_insert (tid_to_thread, (gpointer)tid, thread);
2767 mono_g_hash_table_insert (tid_to_thread_obj, (gpointer)tid, mono_thread_current ());
2768 mono_loader_unlock ();
2769
2770 process_profiler_event (EVENT_KIND_THREAD_START, thread);
2771
2772 /*
2773 * suspend_vm () could have missed this thread, so wait for a resume.
2774 */
2775 suspend_current ();
2776 }
2777
2778 static void
2779 thread_end (MonoProfiler *prof, gsize tid)
2780 {
2781 MonoInternalThread *thread;
2782 DebuggerTlsData *tls = NULL;
2783
2784 mono_loader_lock ();
2785 thread = mono_g_hash_table_lookup (tid_to_thread, (gpointer)tid);
2786 if (thread) {
2787 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
2788 /* FIXME: Maybe we need to free this instead, but some code can't handle that */
2789 tls->terminated = TRUE;
2790 mono_g_hash_table_remove (tid_to_thread_obj, (gpointer)tid);
2791 /* Can't remove from tid_to_thread, as that would defeat the check in thread_start () */
2792 MONO_GC_UNREGISTER_ROOT (tls->thread);
2793 tls->thread = NULL;
2794 }
2795 mono_loader_unlock ();
2796
2797 /* We might be called for threads started before we registered the start callback */
2798 if (thread) {
2799 DEBUG (1, fprintf (log_file, "[%p] Thread terminated, obj=%p, tls=%p.\n", (gpointer)tid, thread, tls));
2800 process_profiler_event (EVENT_KIND_THREAD_DEATH, thread);
2801 }
2802 }
2803
2804 static void
2805 appdomain_load (MonoProfiler *prof, MonoDomain *domain, int result)
2806 {
2807 process_profiler_event (EVENT_KIND_APPDOMAIN_CREATE, domain);
2808 }
2809
2810 static void
2811 appdomain_unload (MonoProfiler *prof, MonoDomain *domain)
2812 {
2813 process_profiler_event (EVENT_KIND_APPDOMAIN_UNLOAD, domain);
2814 }
2815
2816 static void
2817 assembly_load (MonoProfiler *prof, MonoAssembly *assembly, int result)
2818 {
2819 /* Sent later in jit_end () */
2820 mono_loader_lock ();
2821 g_ptr_array_add (pending_assembly_loads, assembly);
2822 mono_loader_unlock ();
2823 }
2824
2825 static void
2826 assembly_unload (MonoProfiler *prof, MonoAssembly *assembly)
2827 {
2828 process_profiler_event (EVENT_KIND_ASSEMBLY_UNLOAD, assembly);
2829 }
2830
2831 static void
2832 start_runtime_invoke (MonoProfiler *prof, MonoMethod *method)
2833 {
2834 #if defined(HOST_WIN32) && !defined(__GNUC__)
2835 gpointer stackptr = ((guint64)_AddressOfReturnAddress () - sizeof (void*));
2836 #else
2837 gpointer stackptr = __builtin_frame_address (1);
2838 #endif
2839 MonoInternalThread *thread = mono_thread_internal_current ();
2840 DebuggerTlsData *tls;
2841
2842 mono_loader_lock ();
2843
2844 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
2845 /* Could be the debugger thread with assembly/type load hooks */
2846 if (tls)
2847 tls->invoke_addr = stackptr;
2848
2849 mono_loader_unlock ();
2850 }
2851
2852 static void
2853 end_runtime_invoke (MonoProfiler *prof, MonoMethod *method)
2854 {
2855 int i;
2856 #if defined(HOST_WIN32) && !defined(__GNUC__)
2857 gpointer stackptr = ((guint64)_AddressOfReturnAddress () - sizeof (void*));
2858 #else
2859 gpointer stackptr = __builtin_frame_address (1);
2860 #endif
2861
2862 if (ss_req == NULL || stackptr != ss_invoke_addr || ss_req->thread != mono_thread_internal_current ())
2863 return;
2864
2865 /*
2866 * We need to stop single stepping when exiting a runtime invoke, since if it is
2867 * a step out, it may return to native code, and thus never end.
2868 */
2869 mono_loader_lock ();
2870 ss_invoke_addr = NULL;
2871
2872 for (i = 0; i < event_requests->len; ++i) {
2873 EventRequest *req = g_ptr_array_index (event_requests, i);
2874
2875 if (req->event_kind == EVENT_KIND_STEP) {
2876 ss_destroy (req->info);
2877 g_ptr_array_remove_index_fast (event_requests, i);
2878 g_free (req);
2879 break;
2880 }
2881 }
2882 mono_loader_unlock ();
2883 }
2884
2885 static void
2886 jit_end (MonoProfiler *prof, MonoMethod *method, MonoJitInfo *jinfo, int result)
2887 {
2888 /*
2889 * We emit type load events when the first method of the type is JITted,
2890 * since the class load profiler callbacks might be called with the
2891 * loader lock held. They could also occur in the debugger thread.
2892 * Same for assembly load events.
2893 */
2894 gboolean type_load = FALSE;
2895
2896 while (TRUE) {
2897 MonoAssembly *assembly = NULL;
2898
2899 // FIXME: Maybe store this in TLS so the thread of the event is correct ?
2900 mono_loader_lock ();
2901 if (pending_assembly_loads->len > 0) {
2902 assembly = g_ptr_array_index (pending_assembly_loads, 0);
2903 g_ptr_array_remove_index (pending_assembly_loads, 0);
2904 }
2905 mono_loader_unlock ();
2906
2907 if (assembly)
2908 process_profiler_event (EVENT_KIND_ASSEMBLY_LOAD, assembly);
2909 else
2910 break;
2911 }
2912
2913 mono_loader_lock ();
2914 if (!g_hash_table_lookup (loaded_classes, method->klass)) {
2915 type_load = TRUE;
2916 g_hash_table_insert (loaded_classes, method->klass, method->klass);
2917 }
2918 mono_loader_unlock ();
2919 if (type_load)
2920 process_profiler_event (EVENT_KIND_TYPE_LOAD, method->klass);
2921
2922 if (!result)
2923 add_pending_breakpoints (method, jinfo);
2924 }
2925
2926 /*
2927 * BREAKPOINTS/SINGLE STEPPING
2928 */
2929
2930 /*
2931 * Contains information about an inserted breakpoint.
2932 */
2933 typedef struct {
2934 long il_offset, native_offset;
2935 guint8 *ip;
2936 gboolean pending, entry;
2937 MonoJitInfo *ji;
2938 } BreakpointInstance;
2939
2940 /*
2941 * Contains generic information about a breakpoint.
2942 */
2943 typedef struct {
2944 /*
2945 * The method where the breakpoint is placed. Can be NULL in which case it
2946 * is inserted into every method. This is used to implement method entry/
2947 * exit events. Can be a generic method definition, in which case the
2948 * breakpoint is inserted into every instance.
2949 */
2950 MonoMethod *method;
2951 long il_offset;
2952 gboolean pending, entry;
2953 EventRequest *req;
2954 /*
2955 * A list of BreakpointInstance structures describing where the breakpoint
2956 * was inserted. There could be more than one because of
2957 * generics/appdomains/method entry/exit.
2958 */
2959 GPtrArray *children;
2960 } MonoBreakpoint;
2961
2962 /* List of breakpoints */
2963 static GPtrArray *breakpoints;
2964 /* Maps breakpoint locations to the number of breakpoints at that location */
2965 static GHashTable *bp_locs;
2966
2967 static void
2968 breakpoints_init (void)
2969 {
2970 breakpoints = g_ptr_array_new ();
2971 bp_locs = g_hash_table_new (NULL, NULL);
2972 }
2973
2974 static void
2975 breakpoints_cleanup (void)
2976 {
2977 int i;
2978
2979 mono_loader_lock ();
2980
2981 for (i = 0; i < breakpoints->len; ++i)
2982 g_free (g_ptr_array_index (breakpoints, i));
2983
2984 g_ptr_array_free (breakpoints, TRUE);
2985 g_hash_table_destroy (bp_locs);
2986
2987 mono_loader_unlock ();
2988 }
2989
2990 /*
2991 * insert_breakpoint:
2992 *
2993 * Insert the breakpoint described by BP into the method described by
2994 * JI.
2995 */
2996 static void
2997 insert_breakpoint (MonoSeqPointInfo *seq_points, MonoJitInfo *ji, MonoBreakpoint *bp)
2998 {
2999 int i, count;
3000 gint32 il_offset, native_offset;
3001 BreakpointInstance *inst;
3002
3003 native_offset = 0;
3004 for (i = 0; i < seq_points->len; ++i) {
3005 il_offset = seq_points->seq_points [i].il_offset;
3006 native_offset = seq_points->seq_points [i].native_offset;
3007
3008 if (il_offset == bp->il_offset)
3009 break;
3010 }
3011
3012 if (i == seq_points->len)
3013 /* Have to handle this somehow */
3014 NOT_IMPLEMENTED;
3015
3016 inst = g_new0 (BreakpointInstance, 1);
3017 inst->native_offset = native_offset;
3018 inst->ip = (guint8*)ji->code_start + native_offset;
3019 inst->ji = ji;
3020
3021 mono_loader_lock ();
3022
3023 g_ptr_array_add (bp->children, inst);
3024
3025 count = GPOINTER_TO_INT (g_hash_table_lookup (bp_locs, inst->ip));
3026 g_hash_table_insert (bp_locs, inst->ip, GINT_TO_POINTER (count + 1));
3027 mono_loader_unlock ();
3028
3029 if (count == 0) {
3030 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
3031 mono_arch_set_breakpoint (ji, inst->ip);
3032 #else
3033 NOT_IMPLEMENTED;
3034 #endif
3035 }
3036 }
3037
3038 static void
3039 remove_breakpoint (BreakpointInstance *inst)
3040 {
3041 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
3042 int count;
3043 MonoJitInfo *ji = inst->ji;
3044 guint8 *ip = inst->ip;
3045
3046 mono_loader_lock ();
3047 count = GPOINTER_TO_INT (g_hash_table_lookup (bp_locs, ip));
3048 g_hash_table_insert (bp_locs, ip, GINT_TO_POINTER (count - 1));
3049 mono_loader_unlock ();
3050
3051 g_assert (count > 0);
3052
3053 if (count == 1) {
3054 mono_arch_clear_breakpoint (ji, ip);
3055 }
3056 #else
3057 NOT_IMPLEMENTED;
3058 #endif
3059 }
3060
3061 /*
3062 * add_pending_breakpoints:
3063 *
3064 * Insert pending breakpoints into the newly JITted method METHOD.
3065 */
3066 static void
3067 add_pending_breakpoints (MonoMethod *method, MonoJitInfo *ji)
3068 {
3069 int i;
3070 MonoSeqPointInfo *seq_points;
3071 MonoDomain *domain;
3072
3073 if (!breakpoints)
3074 return;
3075
3076 domain = mono_domain_get ();
3077
3078 mono_loader_lock ();
3079
3080 for (i = 0; i < breakpoints->len; ++i) {
3081 MonoBreakpoint *bp = g_ptr_array_index (breakpoints, i);
3082
3083 if (bp->pending && (bp->method == method || !bp->method || (method->is_inflated && ((MonoMethodInflated*)method)->declaring == bp->method))) {
3084 mono_domain_lock (domain);
3085 seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, ji->method);
3086 mono_domain_unlock (domain);
3087 if (!seq_points)
3088 /* Could be AOT code */
3089 continue;
3090 g_assert (seq_points);
3091
3092 insert_breakpoint (seq_points, ji, bp);
3093 }
3094 }
3095
3096 mono_loader_unlock ();
3097 }
3098
3099 static void
3100 set_bp_in_method (MonoDomain *domain, MonoMethod *method, MonoSeqPointInfo *seq_points, MonoBreakpoint *bp)
3101 {
3102 gpointer code;
3103 MonoJitInfo *ji;
3104
3105 code = mono_jit_find_compiled_method_with_jit_info (domain, method, &ji);
3106 if (!code) {
3107 /* Might be AOTed code */
3108 code = mono_aot_get_method (domain, method);
3109 g_assert (code);
3110 ji = mono_jit_info_table_find (domain, code);
3111 g_assert (ji);
3112 }
3113 g_assert (code);
3114
3115 insert_breakpoint (seq_points, ji, bp);
3116 }
3117
3118 static void
3119 set_bp_in_method_cb (gpointer key, gpointer value, gpointer user_data)
3120 {
3121 MonoMethod *method = key;
3122 MonoSeqPointInfo *seq_points = value;
3123 MonoBreakpoint *bp = user_data;
3124 MonoDomain *domain = mono_domain_get ();
3125
3126 if (bp->method) {
3127 if (method->is_inflated && ((MonoMethodInflated*)method)->declaring == bp->method) {
3128 /* Generic instance */
3129 set_bp_in_method (domain, method, seq_points, bp);
3130 }
3131 } else {
3132 /* Method entry/exit */
3133 set_bp_in_method (domain, method, seq_points, bp);
3134 }
3135 }
3136
3137 /*
3138 * set_breakpoint:
3139 *
3140 * Set a breakpoint at IL_OFFSET in METHOD.
3141 * METHOD can be NULL, in which case a breakpoint is placed in all methods.
3142 * METHOD can also be a generic method definition, in which case a breakpoint
3143 * is placed in all instances of the method.
3144 */
3145 static MonoBreakpoint*
3146 set_breakpoint (MonoMethod *method, long il_offset, EventRequest *req)
3147 {
3148 MonoSeqPointInfo *seq_points;
3149 MonoDomain *domain;
3150 MonoBreakpoint *bp;
3151
3152 // FIXME:
3153 // - suspend/resume the vm to prevent code patching problems
3154 // - appdomains
3155 // - multiple breakpoints on the same location
3156 // - dynamic methods
3157 // - races
3158
3159 bp = g_new0 (MonoBreakpoint, 1);
3160 bp->method = method;
3161 bp->il_offset = il_offset;
3162 bp->req = req;
3163 bp->children = g_ptr_array_new ();
3164
3165 DEBUG(1, fprintf (log_file, "[dbg] Setting %sbreakpoint at %s:0x%x.\n", (req->event_kind == EVENT_KIND_STEP) ? "single step " : "", method ? mono_method_full_name (method, TRUE) : "<all>", (int)il_offset));
3166
3167 domain = mono_domain_get ();
3168 mono_domain_lock (domain);
3169 if (method) {
3170 seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, method);
3171 if (seq_points) {
3172 set_bp_in_method (domain, method, seq_points, bp);
3173 } else {
3174 if (method->is_generic)
3175 /* There might be already JITted instances */
3176 g_hash_table_foreach (domain_jit_info (domain)->seq_points, set_bp_in_method_cb, bp);
3177
3178 /* Not yet JITted */
3179 bp->pending = TRUE;
3180 }
3181 } else {
3182 g_hash_table_foreach (domain_jit_info (domain)->seq_points, set_bp_in_method_cb, bp);
3183 bp->pending = TRUE;
3184 }
3185 mono_domain_unlock (domain);
3186
3187 mono_loader_lock ();
3188 g_ptr_array_add (breakpoints, bp);
3189 mono_loader_unlock ();
3190
3191 return bp;
3192 }
3193
3194 static void
3195 clear_breakpoint (MonoBreakpoint *bp)
3196 {
3197 int i;
3198
3199 // FIXME: locking, races
3200 for (i = 0; i < bp->children->len; ++i) {
3201 BreakpointInstance *inst = g_ptr_array_index (bp->children, i);
3202
3203 remove_breakpoint (inst);
3204
3205 g_free (inst);
3206 }
3207
3208 mono_loader_lock ();
3209 g_ptr_array_remove (breakpoints, bp);
3210 mono_loader_unlock ();
3211
3212 g_ptr_array_free (bp->children, TRUE);
3213 g_free (bp);
3214 }
3215
3216 static void
3217 process_breakpoint_inner (DebuggerTlsData *tls, MonoContext *ctx)
3218 {
3219 MonoJitInfo *ji;
3220 guint8 *orig_ip, *ip;
3221 int i, j, suspend_policy;
3222 guint32 native_offset;
3223 MonoBreakpoint *bp;
3224 BreakpointInstance *inst;
3225 GPtrArray *bp_reqs, *ss_reqs_orig, *ss_reqs;
3226 GSList *bp_events = NULL, *ss_events = NULL, *enter_leave_events = NULL;
3227 EventKind kind = EVENT_KIND_BREAKPOINT;
3228
3229 // FIXME: Speed this up
3230
3231 orig_ip = ip = MONO_CONTEXT_GET_IP (ctx);
3232 ji = mini_jit_info_table_find (mono_domain_get (), (char*)ip, NULL);
3233 g_assert (ji);
3234 g_assert (ji->method);
3235
3236 /* Compute the native offset of the breakpoint from the ip */
3237 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
3238 ip = mono_arch_get_ip_for_breakpoint (ji, ctx);
3239 native_offset = ip - (guint8*)ji->code_start;
3240 #else
3241 NOT_IMPLEMENTED;
3242 #endif
3243
3244 /*
3245 * Skip the instruction causing the breakpoint signal.
3246 */
3247 mono_arch_skip_breakpoint (ctx);
3248
3249 if (ji->method->wrapper_type || tls->disable_breakpoints)
3250 return;
3251
3252 bp_reqs = g_ptr_array_new ();
3253 ss_reqs = g_ptr_array_new ();
3254 ss_reqs_orig = g_ptr_array_new ();
3255
3256 DEBUG(1, fprintf (log_file, "[%p] Breakpoint hit, method=%s, offset=0x%x.\n", (gpointer)GetCurrentThreadId (), ji->method->name, native_offset));
3257
3258 mono_loader_lock ();
3259
3260 bp = NULL;
3261 for (i = 0; i < breakpoints->len; ++i) {
3262 bp = g_ptr_array_index (breakpoints, i);
3263
3264 if (!bp->method)
3265 continue;
3266
3267 for (j = 0; j < bp->children->len; ++j) {
3268 inst = g_ptr_array_index (bp->children, j);
3269 if (inst->ji == ji && inst->native_offset == native_offset) {
3270 if (bp->req->event_kind == EVENT_KIND_STEP) {
3271 g_ptr_array_add (ss_reqs_orig, bp->req);
3272 } else {
3273 g_ptr_array_add (bp_reqs, bp->req);
3274 }
3275 }
3276 }
3277 }
3278 if (bp_reqs->len == 0 && ss_reqs_orig->len == 0) {
3279 MonoSeqPointInfo *seq_points;
3280 int seq_il_offset, seq_native_offset;
3281 MonoDomain *domain = mono_domain_get ();
3282
3283 /* Maybe a method entry/exit event */
3284 mono_domain_lock (domain);
3285 seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, ji->method);
3286 mono_domain_unlock (domain);
3287 if (!seq_points) {
3288 // FIXME: Generic sharing */
3289 mono_loader_unlock ();
3290 return;
3291 }
3292 g_assert (seq_points);
3293
3294 for (i = 0; i < seq_points->len; ++i) {
3295 seq_il_offset = seq_points->seq_points [i].il_offset;
3296 seq_native_offset = seq_points->seq_points [i].native_offset;
3297
3298 if (native_offset == seq_native_offset) {
3299 if (seq_il_offset == METHOD_ENTRY_IL_OFFSET)
3300 kind = EVENT_KIND_METHOD_ENTRY;
3301 else if (seq_il_offset == METHOD_EXIT_IL_OFFSET)
3302 kind = EVENT_KIND_METHOD_EXIT;
3303 break;
3304 }
3305 }
3306 }
3307
3308 /* Process single step requests */
3309 for (i = 0; i < ss_reqs_orig->len; ++i) {
3310 EventRequest *req = g_ptr_array_index (ss_reqs_orig, i);
3311 SingleStepReq *ss_req = bp->req->info;
3312 gboolean hit = TRUE;
3313 MonoSeqPointInfo *info;
3314 SeqPoint *sp;
3315
3316 sp = find_seq_point_for_native_offset (mono_domain_get (), ji->method, native_offset, &info);
3317 g_assert (sp);
3318
3319 if (ss_req->size == STEP_SIZE_LINE) {
3320 /* Have to check whenever a different source line was reached */
3321 MonoDebugMethodInfo *minfo;
3322 MonoDebugSourceLocation *loc = NULL;
3323
3324 minfo = mono_debug_lookup_method (ji->method);
3325
3326 if (minfo)
3327 loc = mono_debug_symfile_lookup_location (minfo, sp->il_offset);
3328
3329 if (!loc || (loc && ji->method == ss_req->last_method && loc->row == ss_req->last_line))
3330 /* Have to continue single stepping */
3331 hit = FALSE;
3332
3333 if (loc) {
3334 ss_req->last_method = ji->method;
3335 ss_req->last_line = loc->row;
3336 mono_debug_free_source_location (loc);
3337 }
3338 }
3339
3340 if (hit)
3341 g_ptr_array_add (ss_reqs, req);
3342
3343 /* Start single stepping again from the current sequence point */
3344 ss_start (ss_req, ji->method, sp, info, ctx, NULL);
3345 }
3346
3347 if (ss_reqs->len > 0)
3348 ss_events = create_event_list (EVENT_KIND_STEP, ss_reqs, ji, NULL, &suspend_policy);
3349 if (bp_reqs->len > 0)
3350 bp_events = create_event_list (EVENT_KIND_BREAKPOINT, bp_reqs, ji, NULL, &suspend_policy);
3351 if (kind != EVENT_KIND_BREAKPOINT)
3352 enter_leave_events = create_event_list (kind, NULL, ji, NULL, &suspend_policy);
3353
3354 mono_loader_unlock ();
3355
3356 g_ptr_array_free (bp_reqs, TRUE);
3357 g_ptr_array_free (ss_reqs, TRUE);
3358
3359 /*
3360 * FIXME: The first event will suspend, so the second will only be sent after the
3361 * resume.
3362 */
3363 if (ss_events)
3364 process_event (EVENT_KIND_STEP, ji->method, 0, ctx, ss_events, suspend_policy);
3365 if (bp_events)
3366 process_event (kind, ji->method, 0, ctx, bp_events, suspend_policy);
3367 if (enter_leave_events)
3368 process_event (kind, ji->method, 0, ctx, enter_leave_events, suspend_policy);
3369 }
3370
3371 static void
3372 process_breakpoint (void)
3373 {
3374 DebuggerTlsData *tls;
3375 MonoContext ctx;
3376 static void (*restore_context) (void *);
3377
3378 if (!restore_context)
3379 restore_context = mono_get_restore_context ();
3380
3381 tls = TlsGetValue (debugger_tls_id);
3382 memcpy (&ctx, &tls->handler_ctx, sizeof (MonoContext));
3383
3384 process_breakpoint_inner (tls, &ctx);
3385
3386 /* This is called when resuming from a signal handler, so it shouldn't return */
3387 restore_context (&ctx);
3388 g_assert_not_reached ();
3389 }
3390
3391 static void
3392 resume_from_signal_handler (void *sigctx, void *func)
3393 {
3394 DebuggerTlsData *tls;
3395 MonoContext ctx;
3396
3397 /* Save the original context in TLS */
3398 // FIXME: This might not work on an altstack ?
3399 tls = TlsGetValue (debugger_tls_id);
3400 g_assert (tls);
3401
3402 // FIXME: MonoContext usually doesn't include the fp registers, so these are
3403 // clobbered by a single step/breakpoint event. If this turns out to be a problem,
3404 // clob:c could be added to op_seq_point.
3405
3406 mono_arch_sigctx_to_monoctx (sigctx, &ctx);
3407 memcpy (&tls->handler_ctx, &ctx, sizeof (MonoContext));
3408 MONO_CONTEXT_SET_IP (&ctx, func);
3409 mono_arch_monoctx_to_sigctx (&ctx, sigctx);
3410
3411 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3412 mono_ppc_set_func_into_sigctx (sigctx, func);
3413 #endif
3414 }
3415
3416 void
3417 mono_debugger_agent_breakpoint_hit (void *sigctx)
3418 {
3419 /*
3420 * We are called from a signal handler, and running code there causes all kinds of
3421 * problems, like the original signal is disabled, libgc can't handle altstack, etc.
3422 * So set up the signal context to return to the real breakpoint handler function.
3423 */
3424
3425 resume_from_signal_handler (sigctx, process_breakpoint);
3426 }
3427
3428 static void
3429 process_single_step_inner (DebuggerTlsData *tls, MonoContext *ctx)
3430 {
3431 MonoJitInfo *ji;
3432 guint8 *ip;
3433 GPtrArray *reqs;
3434 int il_offset, suspend_policy;
3435 MonoDomain *domain;
3436 GSList *events;
3437
3438 // FIXME: Speed this up
3439
3440 ip = MONO_CONTEXT_GET_IP (ctx);
3441
3442 /* Skip the instruction causing the single step */
3443 mono_arch_skip_single_step (ctx);
3444
3445 if (suspend_count > 0) {
3446 process_suspend (tls, ctx);
3447 return;
3448 }
3449
3450 if (!ss_req)
3451 // FIXME: A suspend race
3452 return;
3453
3454 if (mono_thread_internal_current () != ss_req->thread)
3455 return;
3456
3457 if (log_level > 0) {
3458 const char *depth = NULL;
3459
3460 ji = mini_jit_info_table_find (mono_domain_get (), (char*)ip, &domain);
3461
3462 switch (ss_req->depth) {
3463 case STEP_DEPTH_OVER:
3464 depth = "over";
3465 break;
3466 case STEP_DEPTH_OUT:
3467 depth = "out";
3468 break;
3469 case STEP_DEPTH_INTO:
3470 depth = "into";
3471 break;
3472 default:
3473 g_assert_not_reached ();
3474 }
3475
3476 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));
3477 }
3478
3479 /*
3480 * We implement step over/out by single stepping until we reach the same
3481 * frame/parent frame.
3482 * FIXME:
3483 * - this is slow
3484 * - stack growing upward
3485 * - localloc
3486 * - exceptions
3487 */
3488 if (ss_req->depth != STEP_DEPTH_INTO) {
3489 if (ss_req->depth == STEP_DEPTH_OVER && MONO_CONTEXT_GET_SP (ctx) < ss_req->last_sp)
3490 return;
3491 if (ss_req->depth == STEP_DEPTH_OUT && MONO_CONTEXT_GET_SP (ctx) <= ss_req->last_sp)
3492 return;
3493
3494 ss_req->last_sp = MONO_CONTEXT_GET_SP (ctx);
3495 }
3496
3497 ji = mini_jit_info_table_find (mono_domain_get (), (char*)ip, &domain);
3498 g_assert (ji);
3499 g_assert (ji->method);
3500
3501 if (ji->method->wrapper_type && ji->method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
3502 return;
3503
3504 /*
3505 * FIXME:
3506 * Stopping in memset makes half-initialized vtypes visible.
3507 * Stopping in memcpy makes half-copied vtypes visible.
3508 */
3509 if (ji->method->klass == mono_defaults.string_class && (!strcmp (ji->method->name, "memset") || strstr (ji->method->name, "memcpy")))
3510 return;
3511
3512 /*
3513 * The ip points to the instruction causing the single step event, convert it
3514 * to the offset stored in seq_points.
3515 */
3516 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
3517 ip = mono_arch_get_ip_for_single_step (ji, ctx);
3518 #else
3519 g_assert_not_reached ();
3520 #endif
3521
3522 /*
3523 * mono_debug_lookup_source_location () doesn't work for IL offset 0 for
3524 * example, so do things by hand.
3525 */
3526 il_offset = compute_il_offset (domain, ji->method, (guint8*)ip - (guint8*)ji->code_start);
3527
3528 if (il_offset == -1)
3529 return;
3530
3531 if (ss_req->size == STEP_SIZE_LINE) {
3532 /* Step until a different source line is reached */
3533 MonoDebugMethodInfo *minfo;
3534
3535 minfo = mono_debug_lookup_method (ji->method);
3536
3537 if (minfo) {
3538 MonoDebugSourceLocation *loc = mono_debug_symfile_lookup_location (minfo, il_offset);
3539
3540 if (loc && ji->method == ss_req->last_method && loc->row == ss_req->last_line) {
3541 mono_debug_free_source_location (loc);
3542 return;
3543 }
3544 if (!loc)
3545 /*
3546 * Step until we reach a location with line number info,
3547 * otherwise the client can't show a location.
3548 * This can happen for example with statics initialized inline
3549 * outside of a cctor.
3550 */
3551 return;
3552
3553 if (loc) {
3554 ss_req->last_method = ji->method;
3555 ss_req->last_line = loc->row;
3556 mono_debug_free_source_location (loc);
3557 }
3558 }
3559 }
3560
3561 // FIXME: Has to lock earlier
3562
3563 reqs = g_ptr_array_new ();
3564
3565 mono_loader_lock ();
3566
3567 g_ptr_array_add (reqs, ss_req->req);
3568
3569 events = create_event_list (EVENT_KIND_STEP, reqs, ji, NULL, &suspend_policy);
3570
3571 g_ptr_array_free (reqs, TRUE);
3572
3573 mono_loader_unlock ();
3574
3575 process_event (EVENT_KIND_STEP, ji->method, il_offset, ctx, events, suspend_policy);
3576 }
3577
3578 static void
3579 process_single_step (void)
3580 {
3581 DebuggerTlsData *tls;
3582 MonoContext ctx;
3583 static void (*restore_context) (void *);
3584
3585 if (!restore_context)
3586 restore_context = mono_get_restore_context ();
3587
3588 tls = TlsGetValue (debugger_tls_id);
3589 memcpy (&ctx, &tls->handler_ctx, sizeof (MonoContext));
3590
3591 process_single_step_inner (tls, &ctx);
3592
3593 /* This is called when resuming from a signal handler, so it shouldn't return */
3594 restore_context (&ctx);
3595 g_assert_not_reached ();
3596 }
3597
3598 /*
3599 * mono_debugger_agent_single_step_event:
3600 *
3601 * Called from a signal handler to handle a single step event.
3602 */
3603 void
3604 mono_debugger_agent_single_step_event (void *sigctx)
3605 {
3606 /* Resume to process_single_step through the signal context */
3607
3608 // FIXME: Since step out/over is implemented using step in, the step in case should
3609 // be as fast as possible. Move the relevant code from process_single_step_inner ()
3610 // here
3611
3612 if (GetCurrentThreadId () == debugger_thread_id) {
3613 /*
3614 * This could happen despite our best effors when the runtime calls
3615 * assembly/type resolve hooks.
3616 * FIXME: Breakpoints too.
3617 */
3618 MonoContext ctx;
3619
3620 mono_arch_sigctx_to_monoctx (sigctx, &ctx);
3621 mono_arch_skip_single_step (&ctx);
3622 mono_arch_monoctx_to_sigctx (&ctx, sigctx);
3623 return;
3624 }
3625
3626 resume_from_signal_handler (sigctx, process_single_step);
3627 }
3628
3629 /*
3630 * start_single_stepping:
3631 *
3632 * Turn on single stepping. Can be called multiple times, for example,
3633 * by a single step event request + a suspend.
3634 */
3635 static void
3636 start_single_stepping (void)
3637 {
3638 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
3639 int val = InterlockedIncrement (&ss_count);
3640
3641 if (val == 1)
3642 mono_arch_start_single_stepping ();
3643
3644 if (ss_req != NULL && ss_invoke_addr == NULL) {
3645 DebuggerTlsData *tls;
3646
3647 mono_loader_lock ();
3648
3649 tls = mono_g_hash_table_lookup (thread_to_tls, ss_req->thread);
3650 ss_invoke_addr = tls->invoke_addr;
3651
3652 mono_loader_unlock ();
3653 }
3654 #else
3655 g_assert_not_reached ();
3656 #endif
3657 }
3658
3659 static void
3660 stop_single_stepping (void)
3661 {
3662 #ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
3663 int val = InterlockedDecrement (&ss_count);
3664
3665 if (val == 0)
3666 mono_arch_stop_single_stepping ();
3667 #else
3668 g_assert_not_reached ();
3669 #endif
3670 }
3671
3672 /*
3673 * ss_stop:
3674 *
3675 * Stop the single stepping operation given by SS_REQ.
3676 */
3677 static void
3678 ss_stop (SingleStepReq *ss_req)
3679 {
3680 gboolean use_bps = FALSE;
3681
3682 if (ss_req->bps) {
3683 GSList *l;
3684
3685 use_bps = TRUE;
3686
3687 for (l = ss_req->bps; l; l = l->next) {
3688 clear_breakpoint (l->data);
3689 }
3690 g_slist_free (ss_req->bps);
3691 ss_req->bps = NULL;
3692 }
3693
3694 if (ss_req->global) {
3695 stop_single_stepping ();
3696 ss_req->global = FALSE;
3697 }
3698 }
3699
3700 /*
3701 * ss_start:
3702 *
3703 * Start the single stepping operation given by SS_REQ from the sequence point SP.
3704 */
3705 static void
3706 ss_start (SingleStepReq *ss_req, MonoMethod *method, SeqPoint *sp, MonoSeqPointInfo *info, MonoContext *ctx, DebuggerTlsData *tls)
3707 {
3708 gboolean use_bp = FALSE;
3709 int i, frame_index;
3710 SeqPoint *next_sp;
3711 MonoBreakpoint *bp;
3712
3713 /* Stop the previous operation */
3714 ss_stop (ss_req);
3715
3716 /*
3717 * Implement single stepping using breakpoints if possible.
3718 */
3719 if (ss_req->depth == STEP_DEPTH_OVER) {
3720 frame_index = 1;
3721 /*
3722 * Find the first sequence point in the current or in a previous frame which
3723 * is not the last in its method.
3724 */
3725 while (sp && sp->next_len == 0) {
3726 sp = NULL;
3727 if (tls && frame_index < tls->frame_count) {
3728 StackFrame *frame = tls->frames [frame_index];
3729
3730 method = frame->method;
3731 if (frame->il_offset != -1) {
3732 sp = find_seq_point (frame->domain, frame->method, frame->il_offset, &info);
3733 }
3734 frame_index ++;
3735 }
3736 }
3737
3738 if (sp && sp->next_len > 0) {
3739 use_bp = TRUE;
3740 for (i = 0; i < sp->next_len; ++i) {
3741 next_sp = &info->seq_points [sp->next [i]];
3742
3743 bp = set_breakpoint (method, next_sp->il_offset, ss_req->req);
3744 ss_req->bps = g_slist_append (ss_req->bps, bp);
3745 }
3746 }
3747 }
3748
3749 if (!ss_req->bps) {
3750 ss_req->global = TRUE;
3751 start_single_stepping ();
3752 } else {
3753 ss_req->global = FALSE;
3754 }
3755 }
3756
3757 /*
3758 * Start single stepping of thread THREAD
3759 */
3760 static ErrorCode
3761 ss_create (MonoInternalThread *thread, StepSize size, StepDepth depth, EventRequest *req)
3762 {
3763 DebuggerTlsData *tls;
3764 MonoSeqPointInfo *info;
3765 SeqPoint *sp = NULL;
3766 MonoMethod *method = NULL;
3767
3768 if (suspend_count == 0)
3769 return ERR_NOT_SUSPENDED;
3770
3771 wait_for_suspend ();
3772
3773 // FIXME: Multiple requests
3774 if (ss_req) {
3775 DEBUG (0, printf ("Received a single step request while the previous one was still active.\n"));
3776 return ERR_NOT_IMPLEMENTED;
3777 }
3778
3779 ss_req = g_new0 (SingleStepReq, 1);
3780 ss_req->req = req;
3781 ss_req->thread = thread;
3782 ss_req->size = size;
3783 ss_req->depth = depth;
3784 req->info = ss_req;
3785
3786 mono_loader_lock ();
3787 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
3788 mono_loader_unlock ();
3789 g_assert (tls);
3790 g_assert (tls->has_context);
3791 ss_req->start_sp = ss_req->last_sp = MONO_CONTEXT_GET_SP (&tls->ctx);
3792
3793 if (ss_req->size == STEP_SIZE_LINE) {
3794 StackFrame *frame;
3795 MonoDebugMethodInfo *minfo;
3796
3797 /* Compute the initial line info */
3798 compute_frame_info (thread, tls);
3799
3800 g_assert (tls->frame_count);
3801 frame = tls->frames [0];
3802
3803 ss_req->last_method = frame->method;
3804 ss_req->last_line = -1;
3805
3806 minfo = mono_debug_lookup_method (frame->method);
3807 if (minfo && frame->il_offset != -1) {
3808 MonoDebugSourceLocation *loc = mono_debug_symfile_lookup_location (minfo, frame->il_offset);
3809
3810 if (loc) {
3811 ss_req->last_line = loc->row;
3812 g_free (loc);
3813 }
3814 }
3815 }
3816
3817 if (ss_req->depth == STEP_DEPTH_OVER) {
3818 StackFrame *frame;
3819
3820 compute_frame_info (thread, tls);
3821
3822 g_assert (tls->frame_count);
3823 frame = tls->frames [0];
3824
3825 if (frame->il_offset != -1) {
3826 /* FIXME: Sort the table and use a binary search */
3827 sp = find_seq_point (frame->domain, frame->method, frame->il_offset, &info);
3828 g_assert (sp);
3829 method = frame->method;
3830 }
3831 }
3832
3833 ss_start (ss_req, method, sp, info, NULL, tls);
3834
3835 return 0;
3836 }
3837
3838 static void
3839 ss_destroy (SingleStepReq *req)
3840 {
3841 // FIXME: Locking
3842 g_assert (ss_req == req);
3843
3844 ss_stop (ss_req);
3845
3846 g_free (ss_req);
3847 ss_req = NULL;
3848 }
3849
3850 void
3851 mono_debugger_agent_handle_exception (MonoException *exc, MonoContext *ctx)
3852 {
3853 int suspend_policy;
3854 GSList *events;
3855 MonoJitInfo *ji;
3856
3857 /* Just-In-Time debugging */
3858 if (agent_config.onthrow && !inited) {
3859 GSList *l;
3860 gboolean found = FALSE;
3861
3862 for (l = agent_config.onthrow; l; l = l->next) {
3863 char *ex_type = l->data;
3864 char *f = mono_type_full_name (&exc->object.vtable->klass->byval_arg);
3865
3866 if (!strcmp (ex_type, "") || !strcmp (ex_type, f))
3867 found = TRUE;
3868
3869 g_free (f);
3870 }
3871
3872 if (found) {
3873 finish_agent_init (FALSE);
3874
3875 /*
3876 * Send an unsolicited EXCEPTION event with a dummy request id.
3877 */
3878 events = g_slist_append (NULL, GUINT_TO_POINTER (0xffffff));
3879 process_event (EVENT_KIND_EXCEPTION, exc, 0, ctx, events, SUSPEND_POLICY_ALL);
3880 return;
3881 }
3882 }
3883
3884 if (!inited)
3885 return;
3886
3887 ji = mini_jit_info_table_find (mono_domain_get (), MONO_CONTEXT_GET_IP (ctx), NULL);
3888
3889 mono_loader_lock ();
3890 events = create_event_list (EVENT_KIND_EXCEPTION, NULL, ji, exc, &suspend_policy);
3891 mono_loader_unlock ();
3892
3893 process_event (EVENT_KIND_EXCEPTION, exc, 0, ctx, events, suspend_policy);
3894 }
3895
3896 void
3897 mono_debugger_agent_handle_unhandled_exception (MonoException *exc, MonoContext *ctx)
3898 {
3899 GSList *events;
3900
3901 if (!agent_config.onuncaught)
3902 return;
3903
3904 finish_agent_init (FALSE);
3905
3906 /*
3907 * Send an unsolicited EXCEPTION event with a dummy request id.
3908 */
3909 events = g_slist_append (NULL, GUINT_TO_POINTER (0xffffff));
3910 process_event (EVENT_KIND_EXCEPTION, exc, 0, ctx, events, SUSPEND_POLICY_ALL);
3911 }
3912
3913 /*
3914 * buffer_add_value_full:
3915 *
3916 * Add the encoding of the value at ADDR described by T to the buffer.
3917 * AS_VTYPE determines whenever to treat primitive types as primitive types or
3918 * vtypes.
3919 */
3920 static void
3921 buffer_add_value_full (Buffer *buf, MonoType *t, void *addr, MonoDomain *domain,
3922 gboolean as_vtype)
3923 {
3924 MonoObject *obj;
3925
3926 if (t->byref) {
3927 g_assert (*(void**)addr);
3928 addr = *(void**)addr;
3929 }
3930
3931 if (as_vtype) {
3932 switch (t->type) {
3933 case MONO_TYPE_BOOLEAN:
3934 case MONO_TYPE_I1:
3935 case MONO_TYPE_U1:
3936 case MONO_TYPE_CHAR:
3937 case MONO_TYPE_I2:
3938 case MONO_TYPE_U2:
3939 case MONO_TYPE_I4:
3940 case MONO_TYPE_U4:
3941 case MONO_TYPE_R4:
3942 case MONO_TYPE_I8:
3943 case MONO_TYPE_U8:
3944 case MONO_TYPE_R8:
3945 case MONO_TYPE_I:
3946 case MONO_TYPE_U:
3947 case MONO_TYPE_PTR:
3948 goto handle_vtype;
3949 break;
3950 default:
3951 break;
3952 }
3953 }
3954
3955 switch (t->type) {
3956 case MONO_TYPE_VOID:
3957 buffer_add_byte (buf, t->type);
3958 break;
3959 case MONO_TYPE_BOOLEAN:
3960 case MONO_TYPE_I1:
3961 case MONO_TYPE_U1:
3962 buffer_add_byte (buf, t->type);
3963 buffer_add_int (buf, *(gint8*)addr);
3964 break;
3965 case MONO_TYPE_CHAR:
3966 case MONO_TYPE_I2:
3967 case MONO_TYPE_U2:
3968 buffer_add_byte (buf, t->type);
3969 buffer_add_int (buf, *(gint16*)addr);
3970 break;
3971 case MONO_TYPE_I4:
3972 case MONO_TYPE_U4:
3973 case MONO_TYPE_R4:
3974 buffer_add_byte (buf, t->type);
3975 buffer_add_int (buf, *(gint32*)addr);
3976 break;
3977 case MONO_TYPE_I8:
3978 case MONO_TYPE_U8:
3979 case MONO_TYPE_R8:
3980 buffer_add_byte (buf, t->type);
3981 buffer_add_long (buf, *(gint64*)addr);
3982 break;
3983 case MONO_TYPE_I:
3984 case MONO_TYPE_U:
3985 /* Treat it as a vtype */
3986 goto handle_vtype;
3987 case MONO_TYPE_PTR: {
3988 gssize val = *(gssize*)addr;
3989
3990 buffer_add_byte (buf, t->type);
3991 buffer_add_long (buf, val);
3992 break;
3993 }
3994 handle_ref:
3995 case MONO_TYPE_STRING:
3996 case MONO_TYPE_SZARRAY:
3997 case MONO_TYPE_OBJECT:
3998 case MONO_TYPE_CLASS:
3999 case MONO_TYPE_ARRAY:
4000 obj = *(MonoObject**)addr;
4001
4002 if (!obj) {
4003 buffer_add_byte (buf, VALUE_TYPE_ID_NULL);
4004 } else {
4005 if (obj->vtable->klass->valuetype) {
4006 t = &obj->vtable->klass->byval_arg;
4007 addr = mono_object_unbox (obj);
4008 goto handle_vtype;
4009 } else if (obj->vtable->klass->rank) {
4010 buffer_add_byte (buf, obj->vtable->klass->byval_arg.type);
4011 } else if (obj->vtable->klass->byval_arg.type == MONO_TYPE_GENERICINST) {
4012 buffer_add_byte (buf, MONO_TYPE_CLASS);
4013 } else {
4014 buffer_add_byte (buf, obj->vtable->klass->byval_arg.type);
4015 }
4016 buffer_add_objid (buf, obj);
4017 }
4018 break;
4019 handle_vtype:
4020 case MONO_TYPE_VALUETYPE: {
4021 int nfields;
4022 gpointer iter;
4023 MonoClassField *f;
4024 MonoClass *klass = mono_class_from_mono_type (t);
4025
4026 buffer_add_byte (buf, MONO_TYPE_VALUETYPE);
4027 buffer_add_byte (buf, klass->enumtype);
4028 buffer_add_typeid (buf, domain, klass);
4029
4030 nfields = 0;
4031 iter = NULL;
4032 while ((f = mono_class_get_fields (klass, &iter))) {
4033 if (f->type->attrs & FIELD_ATTRIBUTE_STATIC)
4034 continue;
4035 if (mono_field_is_deleted (f))
4036 continue;
4037 nfields ++;
4038 }
4039 buffer_add_int (buf, nfields);
4040
4041 iter = NULL;
4042 while ((f = mono_class_get_fields (klass, &iter))) {
4043 if (f->type->attrs & FIELD_ATTRIBUTE_STATIC)
4044 continue;
4045 if (mono_field_is_deleted (f))
4046 continue;
4047 buffer_add_value_full (buf, f->type, (guint8*)addr + f->offset - sizeof (MonoObject), domain, FALSE);
4048 }
4049 break;
4050 }
4051 case MONO_TYPE_GENERICINST:
4052 if (mono_type_generic_inst_is_valuetype (t)) {
4053 goto handle_vtype;
4054 } else {
4055 goto handle_ref;
4056 }
4057 break;
4058 default:
4059 NOT_IMPLEMENTED;
4060 }
4061 }
4062
4063 static void
4064 buffer_add_value (Buffer *buf, MonoType *t, void *addr, MonoDomain *domain)
4065 {
4066 buffer_add_value_full (buf, t, addr, domain, FALSE);
4067 }
4068
4069 static ErrorCode
4070 decode_value (MonoType *t, MonoDomain *domain, guint8 *addr, guint8 *buf, guint8 **endbuf, guint8 *limit)
4071 {
4072 int err;
4073 int type = decode_byte (buf, &buf, limit);
4074
4075 if (type != t->type && !MONO_TYPE_IS_REFERENCE (t) &&
4076 !(t->type == MONO_TYPE_I && type == MONO_TYPE_VALUETYPE) &&
4077 !(t->type == MONO_TYPE_U && type == MONO_TYPE_VALUETYPE) &&
4078 !(t->type == MONO_TYPE_PTR && type == MONO_TYPE_I8) &&
4079 !(t->type == MONO_TYPE_GENERICINST && type == MONO_TYPE_VALUETYPE)) {
4080 DEBUG(1, fprintf (log_file, "[%p] Expected value of type 0x%0x, got 0x%0x.\n", (gpointer)GetCurrentThreadId (), t->type, type));
4081 return ERR_INVALID_ARGUMENT;
4082 }
4083
4084 switch (t->type) {
4085 case MONO_TYPE_BOOLEAN:
4086 *(guint8*)addr = decode_int (buf, &buf, limit);
4087 break;
4088 case MONO_TYPE_CHAR:
4089 *(gunichar2*)addr = decode_int (buf, &buf, limit);
4090 break;
4091 case MONO_TYPE_I1:
4092 *(gint8*)addr = decode_int (buf, &buf, limit);
4093 break;
4094 case MONO_TYPE_U1:
4095 *(guint8*)addr = decode_int (buf, &buf, limit);
4096 break;
4097 case MONO_TYPE_I2:
4098 *(gint16*)addr = decode_int (buf, &buf, limit);
4099 break;
4100 case MONO_TYPE_U2:
4101 *(guint16*)addr = decode_int (buf, &buf, limit);
4102 break;
4103 case MONO_TYPE_I4:
4104 *(gint32*)addr = decode_int (buf, &buf, limit);
4105 break;
4106 case MONO_TYPE_U4:
4107 *(guint32*)addr = decode_int (buf, &buf, limit);
4108 break;
4109 case MONO_TYPE_I8:
4110 *(gint64*)addr = decode_long (buf, &buf, limit);
4111 break;
4112 case MONO_TYPE_U8:
4113 *(guint64*)addr = decode_long (buf, &buf, limit);
4114 break;
4115 case MONO_TYPE_R4:
4116 *(guint32*)addr = decode_int (buf, &buf, limit);
4117 break;
4118 case MONO_TYPE_R8:
4119 *(guint64*)addr = decode_long (buf, &buf, limit);
4120 break;
4121 case MONO_TYPE_PTR:
4122 /* We send these as I8, so we get them back as such */
4123 g_assert (type == MONO_TYPE_I8);
4124 *(gssize*)addr = decode_long (buf, &buf, limit);
4125 break;
4126 case MONO_TYPE_GENERICINST:
4127 if (MONO_TYPE_ISSTRUCT (t)) {
4128 /* The client sends these as a valuetype */
4129 goto handle_vtype;
4130 } else {
4131 goto handle_ref;
4132 }
4133 break;
4134 case MONO_TYPE_I:
4135 case MONO_TYPE_U:
4136 /* We send these as vtypes, so we get them back as such */
4137 g_assert (type == MONO_TYPE_VALUETYPE);
4138 /* Fall through */
4139 handle_vtype:
4140 case MONO_TYPE_VALUETYPE: {
4141 gboolean is_enum = decode_byte (buf, &buf, limit);
4142 MonoClass *klass;
4143 MonoClassField *f;
4144 int nfields;
4145 gpointer iter = NULL;
4146 MonoDomain *d;
4147
4148 /* Enums are sent as a normal vtype */
4149 if (is_enum)
4150 return ERR_NOT_IMPLEMENTED;
4151 klass = decode_typeid (buf, &buf, limit, &d, &err);
4152 if (err)
4153 return err;
4154
4155 if (klass != mono_class_from_mono_type (t))
4156 return ERR_INVALID_ARGUMENT;
4157
4158 nfields = decode_int (buf, &buf, limit);
4159 while ((f = mono_class_get_fields (klass, &iter))) {
4160 if (f->type->attrs & FIELD_ATTRIBUTE_STATIC)
4161 continue;
4162 if (mono_field_is_deleted (f))
4163 continue;
4164 err = decode_value (f->type, domain, (guint8*)addr + f->offset - sizeof (MonoObject), buf, &buf, limit);
4165 if (err)
4166 return err;
4167 nfields --;
4168 }
4169 g_assert (nfields == 0);
4170 break;
4171 }
4172 handle_ref:
4173 default:
4174 if (MONO_TYPE_IS_REFERENCE (t)) {
4175 if (type == MONO_TYPE_OBJECT) {
4176 int objid = decode_objid (buf, &buf, limit);
4177 int err;
4178 MonoObject *obj;
4179
4180 err = get_object (objid, (MonoObject**)&obj);
4181 if (err)
4182 return err;
4183
4184 if (obj && !mono_class_is_assignable_from (mono_class_from_mono_type (t), obj->vtable->klass))
4185 return ERR_INVALID_ARGUMENT;
4186 if (obj && obj->vtable->domain != domain)
4187 return ERR_INVALID_ARGUMENT;
4188
4189 mono_gc_wbarrier_generic_store (addr, obj);
4190 } else if (type == VALUE_TYPE_ID_NULL) {
4191 *(MonoObject**)addr = NULL;
4192 } else {
4193 return ERR_INVALID_ARGUMENT;
4194 }
4195 } else {
4196 NOT_IMPLEMENTED;
4197 }
4198 break;
4199 }
4200
4201 *endbuf = buf;
4202
4203 return 0;
4204 }
4205
4206 static void
4207 add_var (Buffer *buf, MonoType *t, MonoDebugVarInfo *var, MonoContext *ctx, MonoDomain *domain, gboolean as_vtype)
4208 {
4209 guint32 flags;
4210 int reg;
4211 guint8 *addr;
4212 gpointer reg_val;
4213
4214 flags = var->index & MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS;
4215 reg = var->index & ~MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS;
4216
4217 switch (flags) {
4218 case MONO_DEBUG_VAR_ADDRESS_MODE_REGISTER:
4219 reg_val = mono_arch_context_get_int_reg (ctx, reg);
4220
4221 buffer_add_value_full (buf, t, &reg_val, domain, as_vtype);
4222 break;
4223 case MONO_DEBUG_VAR_ADDRESS_MODE_REGOFFSET:
4224 addr = mono_arch_context_get_int_reg (ctx, reg);
4225 addr += (gint32)var->offset;
4226
4227 //printf ("[R%d+%d] = %p\n", reg, var->offset, addr);
4228
4229 buffer_add_value_full (buf, t, addr, domain, as_vtype);
4230 break;
4231 case MONO_DEBUG_VAR_ADDRESS_MODE_DEAD:
4232 NOT_IMPLEMENTED;
4233 break;
4234 default:
4235 g_assert_not_reached ();
4236 }
4237 }
4238
4239 static void
4240 set_var (MonoType *t, MonoDebugVarInfo *var, MonoContext *ctx, MonoDomain *domain, guint8 *val)
4241 {
4242 guint32 flags;
4243 int reg, size;
4244 guint8 *addr;
4245
4246 flags = var->index & MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS;
4247 reg = var->index & ~MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS;
4248
4249 if (MONO_TYPE_IS_REFERENCE (t))
4250 size = sizeof (gpointer);
4251 else
4252 size = mono_class_value_size (mono_class_from_mono_type (t), NULL);
4253
4254 switch (flags) {
4255 case MONO_DEBUG_VAR_ADDRESS_MODE_REGISTER:
4256 // FIXME: Can't set registers, so we disable linears
4257 NOT_IMPLEMENTED;
4258 break;
4259 case MONO_DEBUG_VAR_ADDRESS_MODE_REGOFFSET:
4260 addr = mono_arch_context_get_int_reg (ctx, reg);
4261 addr += (gint32)var->offset;
4262
4263 //printf ("[R%d+%d] = %p\n", reg, var->offset, addr);
4264
4265 // FIXME: Write barriers
4266 memcpy (addr, val, size);
4267 break;
4268 case MONO_DEBUG_VAR_ADDRESS_MODE_DEAD:
4269 NOT_IMPLEMENTED;
4270 break;
4271 default:
4272 g_assert_not_reached ();
4273 }
4274 }
4275
4276 static void
4277 clear_event_request (int req_id, int etype)
4278 {
4279 int i;
4280
4281 mono_loader_lock ();
4282 for (i = 0; i < event_requests->len; ++i) {
4283 EventRequest *req = g_ptr_array_index (event_requests, i);
4284
4285 if (req->id == req_id && req->event_kind == etype) {
4286 if (req->event_kind == EVENT_KIND_BREAKPOINT)
4287 clear_breakpoint (req->info);
4288 if (req->event_kind == EVENT_KIND_STEP)
4289 ss_destroy (req->info);
4290 if (req->event_kind == EVENT_KIND_METHOD_ENTRY)
4291 clear_breakpoint (req->info);
4292 if (req->event_kind == EVENT_KIND_METHOD_EXIT)
4293 clear_breakpoint (req->info);
4294 g_ptr_array_remove_index_fast (event_requests, i);
4295 g_free (req);
4296 break;
4297 }
4298 }
4299 mono_loader_unlock ();
4300 }
4301
4302 static void
4303 add_thread (gpointer key, gpointer value, gpointer user_data)
4304 {
4305 MonoInternalThread *thread = value;
4306 Buffer *buf = user_data;
4307
4308 buffer_add_objid (buf, (MonoObject*)thread);
4309 }
4310
4311 static ErrorCode
4312 do_invoke_method (DebuggerTlsData *tls, Buffer *buf, InvokeData *invoke)
4313 {
4314 guint8 *p = invoke->p;
4315 guint8 *end = invoke->endp;
4316 MonoMethod *m;
4317 int i, err, nargs;
4318 MonoMethodSignature *sig;
4319 guint8 **arg_buf;
4320 void **args;
4321 MonoObject *this, *res, *exc;
4322 MonoDomain *domain;
4323 guint8 *this_buf;
4324 #ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
4325 MonoLMFExt ext;
4326 #endif
4327
4328 if (invoke->method) {
4329 /*
4330 * Invoke this method directly, currently only Environment.Exit () is supported.
4331 */
4332 this = NULL;
4333 DEBUG (1, printf ("[%p] Invoking method '%s' on receiver '%s'.\n", (gpointer)GetCurrentThreadId (), mono_method_full_name (invoke->method, TRUE), this ? this->vtable->klass->name : "<null>"));
4334 mono_runtime_invoke (invoke->method, NULL, invoke->args, &exc);
4335 g_assert_not_reached ();
4336 }
4337
4338 m = decode_methodid (p, &p, end, &domain, &err);
4339 if (err)
4340 return err;
4341 sig = mono_method_signature (m);
4342
4343 if (m->klass->valuetype)
4344 this_buf = g_alloca (mono_class_instance_size (m->klass));
4345 else
4346 this_buf = g_alloca (sizeof (MonoObject*));
4347 err = decode_value (&m->klass->byval_arg, domain, this_buf, p, &p, end);
4348 if (err)
4349 return err;
4350
4351 if (!m->klass->valuetype)
4352 this = *(MonoObject**)this_buf;
4353 else
4354 this = NULL;
4355
4356 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>"));
4357
4358 if (this && this->vtable->domain != domain)
4359 NOT_IMPLEMENTED;
4360
4361 if (!m->klass->valuetype && !(m->flags & METHOD_ATTRIBUTE_STATIC) && !this) {
4362 if (!strcmp (m->name, ".ctor")) {
4363 if (m->klass->flags & TYPE_ATTRIBUTE_ABSTRACT)
4364 return ERR_INVALID_ARGUMENT;
4365 else
4366 this = mono_object_new (domain, m->klass);
4367 } else {
4368 return ERR_INVALID_ARGUMENT;
4369 }
4370 }
4371
4372 if (this && !mono_class_is_assignable_from (m->klass, this->vtable->klass))
4373 return ERR_INVALID_ARGUMENT;
4374
4375 nargs = decode_int (p, &p, end);
4376 if (nargs != sig->param_count)
4377 return ERR_INVALID_ARGUMENT;
4378 /* Use alloca to get gc tracking */
4379 arg_buf = g_alloca (nargs * sizeof (gpointer));
4380 memset (arg_buf, 0, nargs * sizeof (gpointer));
4381 args = g_alloca (nargs * sizeof (gpointer));
4382 for (i = 0; i < nargs; ++i) {
4383 if (MONO_TYPE_IS_REFERENCE (sig->params [i])) {
4384 err = decode_value (sig->params [i], domain, (guint8*)&args [i], p, &p, end);
4385 if (err)
4386 break;
4387
4388 if (args [i] && ((MonoObject*)args [i])->vtable->domain != domain)
4389 NOT_IMPLEMENTED;
4390 } else {
4391 arg_buf [i] = g_alloca (mono_class_instance_size (mono_class_from_mono_type (sig->params [i])));
4392 err = decode_value (sig->params [i], domain, arg_buf [i], p, &p, end);
4393 if (err)
4394 break;
4395 args [i] = arg_buf [i];
4396 }
4397 }
4398
4399 if (i < nargs)
4400 return err;
4401
4402 if (invoke->flags & INVOKE_FLAG_DISABLE_BREAKPOINTS)
4403 tls->disable_breakpoints = TRUE;
4404 else
4405 tls->disable_breakpoints = FALSE;
4406
4407 /*
4408 * Add an LMF frame to link the stack frames on the invoke method with our caller.
4409 */
4410 /* FIXME: Move this to arch specific code */
4411 #ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
4412 if (invoke->has_ctx) {
4413 MonoLMF **lmf_addr;
4414
4415 lmf_addr = mono_get_lmf_addr ();
4416
4417 /* Setup our lmf */
4418 memset (&ext, 0, sizeof (ext));
4419 #ifdef TARGET_AMD64
4420 ext.lmf.previous_lmf = *(lmf_addr);
4421 /* Mark that this is a MonoLMFExt */
4422 ext.lmf.previous_lmf = (gpointer)(((gssize)ext.lmf.previous_lmf) | 2);
4423 ext.lmf.rsp = (gssize)&ext;
4424 #elif defined(TARGET_X86)
4425 ext.lmf.previous_lmf = (gsize)*(lmf_addr);
4426 /* Mark that this is a MonoLMFExt */
4427 ext.lmf.previous_lmf = (gsize)(gpointer)(((gssize)ext.lmf.previous_lmf) | 2);
4428 ext.lmf.ebp = (gssize)&ext;
4429 #elif defined(TARGET_ARM)
4430 ext.lmf.previous_lmf = *(lmf_addr);
4431 /* Mark that this is a MonoLMFExt */
4432 ext.lmf.previous_lmf = (gpointer)(((gssize)ext.lmf.previous_lmf) | 2);
4433 ext.lmf.ebp = (gssize)&ext;
4434 #elif defined(TARGET_POWERPC)
4435 ext.lmf.previous_lmf = *(lmf_addr);
4436 /* Mark that this is a MonoLMFExt */
4437 ext.lmf.previous_lmf = (gpointer)(((gssize)ext.lmf.previous_lmf) | 2);
4438 ext.lmf.ebp = (gssize)&ext;
4439 #else
4440 g_assert_not_reached ();
4441 #endif
4442
4443 ext.debugger_invoke = TRUE;
4444 memcpy (&ext.ctx, &invoke->ctx, sizeof (MonoContext));
4445
4446 mono_set_lmf ((MonoLMF*)&ext);
4447 }
4448 #endif
4449
4450 if (m->klass->valuetype)
4451 res = mono_runtime_invoke (m, this_buf, args, &exc);
4452 else
4453 res = mono_runtime_invoke (m, this, args, &exc);
4454 if (exc) {
4455 buffer_add_byte (buf, 0);
4456 buffer_add_value (buf, &mono_defaults.object_class->byval_arg, &exc, domain);
4457 } else {
4458 buffer_add_byte (buf, 1);
4459 if (sig->ret->type == MONO_TYPE_VOID) {
4460 if (!strcmp (m->name, ".ctor") && !m->klass->valuetype) {
4461 buffer_add_value (buf, &mono_defaults.object_class->byval_arg, &this, domain);
4462 }
4463 else
4464 buffer_add_value (buf, &mono_defaults.void_class->byval_arg, NULL, domain);
4465 } else if (MONO_TYPE_IS_REFERENCE (sig->ret)) {
4466 buffer_add_value (buf, sig->ret, &res, domain);
4467 } else if (mono_class_from_mono_type (sig->ret)->valuetype) {
4468 g_assert (res);
4469 buffer_add_value (buf, sig->ret, mono_object_unbox (res), domain);
4470 } else {
4471 NOT_IMPLEMENTED;
4472 }
4473 }
4474
4475 tls->disable_breakpoints = FALSE;
4476
4477 #ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
4478 if (invoke->has_ctx)
4479 mono_set_lmf ((gpointer)(((gssize)ext.lmf.previous_lmf) & ~3));
4480 #endif
4481
4482 // FIXME: byref arguments
4483 // FIXME: varargs
4484 return ERR_NONE;
4485 }
4486
4487 /*
4488 * invoke_method:
4489 *
4490 * Invoke the method given by tls->invoke in the current thread.
4491 */
4492 static void
4493 invoke_method (void)
4494 {
4495 DebuggerTlsData *tls;
4496 InvokeData *invoke;
4497 int id;
4498 int err;
4499 Buffer buf;
4500 static void (*restore_context) (void *);
4501 MonoContext restore_ctx;
4502
4503 if (!restore_context)
4504 restore_context = mono_get_restore_context ();
4505
4506 tls = TlsGetValue (debugger_tls_id);
4507 g_assert (tls);
4508
4509 invoke = tls->invoke;
4510 g_assert (invoke);
4511 tls->invoke = NULL;
4512
4513 tls->frames_up_to_date = FALSE;
4514
4515 id = invoke->id;
4516
4517 buffer_init (&buf, 128);
4518
4519 err = do_invoke_method (tls, &buf, invoke);
4520
4521 /* Start suspending before sending the reply */
4522 if (!(invoke->flags & INVOKE_FLAG_SINGLE_THREADED))
4523 suspend_vm ();
4524
4525 send_reply_packet (id, err, &buf);
4526
4527 buffer_free (&buf);
4528
4529 memcpy (&restore_ctx, &invoke->ctx, sizeof (MonoContext));
4530
4531 if (invoke->has_ctx)
4532 save_thread_context (&restore_ctx);
4533
4534 if (invoke->flags & INVOKE_FLAG_SINGLE_THREADED) {
4535 g_assert (tls->resume_count);
4536 tls->resume_count -= invoke->suspend_count;
4537 }
4538
4539 DEBUG (1, printf ("[%p] Invoke finished, resume_count = %d.\n", (gpointer)GetCurrentThreadId (), tls->resume_count));
4540
4541 g_free (invoke->p);
4542 g_free (invoke);
4543
4544 suspend_current ();
4545 }
4546
4547 static gboolean
4548 is_really_suspended (gpointer key, gpointer value, gpointer user_data)
4549 {
4550 MonoThread *thread = value;
4551 DebuggerTlsData *tls;
4552 gboolean res;
4553
4554 mono_loader_lock ();
4555 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
4556 g_assert (tls);
4557 res = tls->really_suspended;
4558 mono_loader_unlock ();
4559
4560 return res;
4561 }
4562
4563 static ErrorCode
4564 vm_commands (int command, int id, guint8 *p, guint8 *end, Buffer *buf)
4565 {
4566 switch (command) {
4567 case CMD_VM_VERSION: {
4568 char *build_info, *version;
4569
4570 build_info = mono_get_runtime_build_info ();
4571 version = g_strdup_printf ("mono %s", build_info);
4572
4573 buffer_add_string (buf, version); /* vm version */
4574 buffer_add_int (buf, MAJOR_VERSION);
4575 buffer_add_int (buf, MINOR_VERSION);
4576 g_free (build_info);
4577 g_free (version);
4578 break;
4579 }
4580 case CMD_VM_ALL_THREADS: {
4581 // FIXME: Domains
4582 mono_loader_lock ();
4583 buffer_add_int (buf, mono_g_hash_table_size (tid_to_thread_obj));
4584 mono_g_hash_table_foreach (tid_to_thread_obj, add_thread, buf);
4585 mono_loader_unlock ();
4586 break;
4587 }
4588 case CMD_VM_SUSPEND:
4589 suspend_vm ();
4590 wait_for_suspend ();
4591 break;
4592 case CMD_VM_RESUME:
4593 if (suspend_count == 0)
4594 return ERR_NOT_SUSPENDED;
4595 resume_vm ();
4596 break;
4597 case CMD_VM_DISPOSE:
4598 /* Clear all event requests */
4599 mono_loader_lock ();
4600 while (event_requests->len > 0) {
4601 EventRequest *req = g_ptr_array_index (event_requests, 0);
4602
4603 clear_event_request (req->id, req->event_kind);
4604 }
4605 mono_loader_unlock ();
4606
4607 // FIXME: Count resumes
4608 resume_vm ();
4609 disconnected = TRUE;
4610 break;
4611 case CMD_VM_EXIT: {
4612 MonoInternalThread *thread;
4613 DebuggerTlsData *tls;
4614 MonoClass *env_class;
4615 MonoMethod *exit_method;
4616 gpointer *args;
4617 int exit_code;
4618
4619 exit_code = decode_int (p, &p, end);
4620
4621 // FIXME: What if there is a VM_DEATH event request with SUSPEND_ALL ?
4622
4623 /* Have to send a reply before exiting */
4624 send_reply_packet (id, 0, buf);
4625
4626 /* Clear all event requests */
4627 mono_loader_lock ();
4628 while (event_requests->len > 0) {
4629 EventRequest *req = g_ptr_array_index (event_requests, 0);
4630
4631 clear_event_request (req->id, req->event_kind);
4632 }
4633 mono_loader_unlock ();
4634
4635 /*
4636 * The JDWP documentation says that the shutdown is not orderly. It doesn't
4637 * specify whenever a VM_DEATH event is sent. We currently do an orderly
4638 * shutdown by hijacking a thread to execute Environment.Exit (). This is
4639 * better than doing the shutdown ourselves, since it avoids various races.
4640 */
4641
4642 suspend_vm ();
4643 wait_for_suspend ();
4644
4645 env_class = mono_class_from_name (mono_defaults.corlib, "System", "Environment");
4646 g_assert (env_class);
4647 exit_method = mono_class_get_method_from_name (env_class, "Exit", 1);
4648 g_assert (exit_method);
4649
4650 mono_loader_lock ();
4651 thread = mono_g_hash_table_find (tid_to_thread, is_really_suspended, NULL);
4652 mono_loader_unlock ();
4653
4654 if (thread) {
4655 mono_loader_lock ();
4656 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
4657 mono_loader_unlock ();
4658
4659 args = g_new0 (gpointer, 1);
4660 args [0] = g_malloc (sizeof (int));
4661 *(int*)(args [0]) = exit_code;
4662
4663 tls->invoke = g_new0 (InvokeData, 1);
4664 tls->invoke->method = exit_method;
4665 tls->invoke->args = args;
4666
4667 while (suspend_count > 0)
4668 resume_vm ();
4669 } else {
4670 /*
4671 * No thread found, do it ourselves.
4672 * FIXME: This can race with normal shutdown etc.
4673 */
4674 while (suspend_count > 0)
4675 resume_vm ();
4676
4677 mono_runtime_set_shutting_down ();
4678
4679 mono_threads_set_shutting_down ();
4680
4681 /* Suspend all managed threads since the runtime is going away */
4682 DEBUG(1, fprintf (log_file, "Suspending all threads...\n"));
4683 mono_thread_suspend_all_other_threads ();
4684 DEBUG(1, fprintf (log_file, "Shutting down the runtime...\n"));
4685 mono_runtime_quit ();
4686 #ifdef HOST_WIN32
4687 shutdown (conn_fd, SD_BOTH);
4688 #else
4689 shutdown (conn_fd, SHUT_RDWR);
4690 #endif
4691 DEBUG(1, fprintf (log_file, "Exiting...\n"));
4692
4693 exit (exit_code);
4694 }
4695 break;
4696 }
4697 case CMD_VM_INVOKE_METHOD: {
4698 int objid = decode_objid (p, &p, end);
4699 MonoThread *thread;
4700 DebuggerTlsData *tls;
4701 int err, flags;
4702
4703 err = get_object (objid, (MonoObject**)&thread);
4704 if (err)
4705 return err;
4706
4707 flags = decode_int (p, &p, end);
4708
4709 // Wait for suspending if it already started
4710 if (suspend_count)
4711 wait_for_suspend ();
4712 if (!is_suspended ())
4713 return ERR_NOT_SUSPENDED;
4714
4715 mono_loader_lock ();
4716 tls = mono_g_hash_table_lookup (thread_to_tls, THREAD_TO_INTERNAL (thread));
4717 mono_loader_unlock ();
4718 g_assert (tls);
4719
4720 if (!tls->really_suspended)
4721 /* The thread is still running native code, can't do invokes */
4722 return ERR_NOT_SUSPENDED;
4723
4724 /*
4725 * Store the invoke data into tls, the thread will execute it after it is
4726 * resumed.
4727 */
4728 if (tls->invoke)
4729 NOT_IMPLEMENTED;
4730 tls->invoke = g_new0 (InvokeData, 1);
4731 tls->invoke->id = id;
4732 tls->invoke->flags = flags;
4733 tls->invoke->p = g_malloc (end - p);
4734 memcpy (tls->invoke->p, p, end - p);
4735 tls->invoke->endp = tls->invoke->p + (end - p);
4736 tls->invoke->suspend_count = suspend_count;
4737
4738 if (flags & INVOKE_FLAG_SINGLE_THREADED)
4739 resume_thread (THREAD_TO_INTERNAL (thread));
4740 else
4741 resume_vm ();
4742 break;
4743 }
4744 default:
4745 return ERR_NOT_IMPLEMENTED;
4746 }
4747
4748 return ERR_NONE;
4749 }
4750
4751 static ErrorCode
4752 event_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4753 {
4754 int err;
4755
4756 switch (command) {
4757 case CMD_EVENT_REQUEST_SET: {
4758 EventRequest *req;
4759 int i, event_kind, suspend_policy, nmodifiers, mod;
4760 MonoMethod *method;
4761 long location = 0;
4762 MonoThread *step_thread;
4763 int size = 0, depth = 0, step_thread_id = 0;
4764 MonoDomain *domain;
4765
4766 event_kind = decode_byte (p, &p, end);
4767 suspend_policy = decode_byte (p, &p, end);
4768 nmodifiers = decode_byte (p, &p, end);
4769
4770 req = g_malloc0 (sizeof (EventRequest) + (nmodifiers * sizeof (Modifier)));
4771 req->id = InterlockedIncrement (&event_request_id);
4772 req->event_kind = event_kind;
4773 req->suspend_policy = suspend_policy;
4774 req->nmodifiers = nmodifiers;
4775
4776 method = NULL;
4777 for (i = 0; i < nmodifiers; ++i) {
4778 mod = decode_byte (p, &p, end);
4779
4780 req->modifiers [i].kind = mod;
4781 if (mod == MOD_KIND_COUNT) {
4782 req->modifiers [i].data.count = decode_int (p, &p, end);
4783 } else if (mod == MOD_KIND_LOCATION_ONLY) {
4784 method = decode_methodid (p, &p, end, &domain, &err);
4785 if (err)
4786 return err;
4787 location = decode_long (p, &p, end);
4788 } else if (mod == MOD_KIND_STEP) {
4789 step_thread_id = decode_id (p, &p, end);
4790 size = decode_int (p, &p, end);
4791 depth = decode_int (p, &p, end);
4792 } else if (mod == MOD_KIND_THREAD_ONLY) {
4793 int id = decode_id (p, &p, end);
4794
4795 err = get_object (id, (MonoObject**)&req->modifiers [i].data.thread);
4796 if (err) {
4797 g_free (req);
4798 return err;
4799 }
4800 } else if (mod == MOD_KIND_EXCEPTION_ONLY) {
4801 MonoClass *exc_class = decode_typeid (p, &p, end, &domain, &err);
4802
4803 if (err)
4804 return err;
4805 if (exc_class) {
4806 req->modifiers [i].data.exc_class = exc_class;
4807
4808 if (!mono_class_is_assignable_from (mono_defaults.exception_class, exc_class)) {
4809 g_free (req);
4810 return ERR_INVALID_ARGUMENT;
4811 }
4812 }
4813 } else if (mod == MOD_KIND_ASSEMBLY_ONLY) {
4814 int n = decode_int (p, &p, end);
4815 int j;
4816
4817 req->modifiers [i].data.assemblies = g_new0 (MonoAssembly*, n);
4818 for (j = 0; j < n; ++j) {
4819 req->modifiers [i].data.assemblies [j] = decode_assemblyid (p, &p, end, &domain, &err);
4820 if (err) {
4821 g_free (req->modifiers [i].data.assemblies);
4822 return err;
4823 }
4824 }
4825 } else {
4826 g_free (req);
4827 return ERR_NOT_IMPLEMENTED;
4828 }
4829 }
4830
4831 if (req->event_kind == EVENT_KIND_BREAKPOINT) {
4832 g_assert (method);
4833
4834 req->info = set_breakpoint (method, location, req);
4835 } else if (req->event_kind == EVENT_KIND_STEP) {
4836 g_assert (step_thread_id);
4837
4838 err = get_object (step_thread_id, (MonoObject**)&step_thread);
4839 if (err) {
4840 g_free (req);
4841 return err;
4842 }
4843
4844 err = ss_create (THREAD_TO_INTERNAL (step_thread), size, depth, req);
4845 if (err) {
4846 g_free (req);
4847 return err;
4848 }
4849 } else if (req->event_kind == EVENT_KIND_METHOD_ENTRY) {
4850 req->info = set_breakpoint (NULL, METHOD_ENTRY_IL_OFFSET, req);
4851 } else if (req->event_kind == EVENT_KIND_METHOD_EXIT) {
4852 req->info = set_breakpoint (NULL, METHOD_EXIT_IL_OFFSET, req);
4853 } else if (req->event_kind == EVENT_KIND_EXCEPTION) {
4854 } else {
4855 if (req->nmodifiers) {
4856 g_free (req);
4857 return ERR_NOT_IMPLEMENTED;
4858 }
4859 }
4860
4861 mono_loader_lock ();
4862 g_ptr_array_add (event_requests, req);
4863 mono_loader_unlock ();
4864
4865 buffer_add_int (buf, req->id);
4866 break;
4867 }
4868 case CMD_EVENT_REQUEST_CLEAR: {
4869 int etype = decode_byte (p, &p, end);
4870 int req_id = decode_int (p, &p, end);
4871
4872 // FIXME: Make a faster mapping from req_id to request
4873 mono_loader_lock ();
4874 clear_event_request (req_id, etype);
4875 mono_loader_unlock ();
4876 break;
4877 }
4878 case CMD_EVENT_REQUEST_CLEAR_ALL_BREAKPOINTS: {
4879 int i;
4880
4881 mono_loader_lock ();
4882 i = 0;
4883 while (i < event_requests->len) {
4884 EventRequest *req = g_ptr_array_index (event_requests, i);
4885
4886 if (req->event_kind == EVENT_KIND_BREAKPOINT) {
4887 clear_breakpoint (req->info);
4888
4889 g_ptr_array_remove_index_fast (event_requests, i);
4890 g_free (req);
4891 } else {
4892 i ++;
4893 }
4894 }
4895 mono_loader_unlock ();
4896 break;
4897 }
4898 default:
4899 return ERR_NOT_IMPLEMENTED;
4900 }
4901
4902 return ERR_NONE;
4903 }
4904
4905 static ErrorCode
4906 domain_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4907 {
4908 int err;
4909 MonoDomain *domain;
4910
4911 switch (command) {
4912 case CMD_APPDOMAIN_GET_ROOT_DOMAIN: {
4913 buffer_add_domainid (buf, mono_get_root_domain ());
4914 break;
4915 }
4916 case CMD_APPDOMAIN_GET_FRIENDLY_NAME: {
4917 domain = decode_domainid (p, &p, end, NULL, &err);
4918 if (err)
4919 return err;
4920 buffer_add_string (buf, domain->friendly_name);
4921 break;
4922 }
4923 case CMD_APPDOMAIN_GET_ASSEMBLIES: {
4924 GSList *tmp;
4925 MonoAssembly *ass;
4926 int count;
4927
4928 domain = decode_domainid (p, &p, end, NULL, &err);
4929 if (err)
4930 return err;
4931 mono_loader_lock ();
4932 count = 0;
4933 for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
4934 count ++;
4935 }
4936 buffer_add_int (buf, count);
4937 for (tmp = domain->domain_assemblies; tmp; tmp = tmp->next) {
4938 ass = tmp->data;
4939 buffer_add_assemblyid (buf, domain, ass);
4940 }
4941 mono_loader_unlock ();
4942 break;
4943 }
4944 case CMD_APPDOMAIN_GET_ENTRY_ASSEMBLY: {
4945 domain = decode_domainid (p, &p, end, NULL, &err);
4946 if (err)
4947 return err;
4948
4949 buffer_add_assemblyid (buf, domain, domain->entry_assembly);
4950 break;
4951 }
4952 case CMD_APPDOMAIN_GET_CORLIB: {
4953 domain = decode_domainid (p, &p, end, NULL, &err);
4954 if (err)
4955 return err;
4956
4957 buffer_add_assemblyid (buf, domain, domain->domain->mbr.obj.vtable->klass->image->assembly);
4958 break;
4959 }
4960 case CMD_APPDOMAIN_CREATE_STRING: {
4961 char *s;
4962 MonoString *o;
4963
4964 domain = decode_domainid (p, &p, end, NULL, &err);
4965 if (err)
4966 return err;
4967 s = decode_string (p, &p, end);
4968
4969 o = mono_string_new (domain, s);
4970 buffer_add_objid (buf, (MonoObject*)o);
4971 break;
4972 }
4973 default:
4974 return ERR_NOT_IMPLEMENTED;
4975 }
4976
4977 return ERR_NONE;
4978 }
4979
4980 static ErrorCode
4981 assembly_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
4982 {
4983 int err;
4984 MonoAssembly *ass;
4985 MonoDomain *domain;
4986
4987 ass = decode_assemblyid (p, &p, end, &domain, &err);
4988 if (err)
4989 return err;
4990
4991 switch (command) {
4992 case CMD_ASSEMBLY_GET_LOCATION: {
4993 buffer_add_string (buf, mono_image_get_filename (ass->image));
4994 break;
4995 }
4996 case CMD_ASSEMBLY_GET_ENTRY_POINT: {
4997 guint32 token;
4998 MonoMethod *m;
4999
5000 if (ass->image->dynamic) {
5001 buffer_add_id (buf, 0);
5002 } else {
5003 token = mono_image_get_entry_point (ass->image);
5004 if (token == 0) {
5005 buffer_add_id (buf, 0);
5006 } else {
5007 m = mono_get_method (ass->image, token, NULL);
5008 buffer_add_methodid (buf, domain, m);
5009 }
5010 }
5011 break;
5012 }
5013 case CMD_ASSEMBLY_GET_MANIFEST_MODULE: {
5014 buffer_add_moduleid (buf, domain, ass->image);
5015 break;
5016 }
5017 case CMD_ASSEMBLY_GET_OBJECT: {
5018 MonoObject *o = (MonoObject*)mono_assembly_get_object (mono_domain_get (), ass);
5019 buffer_add_objid (buf, o);
5020 break;
5021 }
5022 case CMD_ASSEMBLY_GET_TYPE: {
5023 char *s = decode_string (p, &p, end);
5024 gboolean ignorecase = decode_byte (p, &p, end);
5025 MonoTypeNameParse info;
5026 MonoType *t;
5027 gboolean type_resolve;
5028
5029 if (!mono_reflection_parse_type (s, &info)) {
5030 t = NULL;
5031 } else {
5032 if (info.assembly.name)
5033 NOT_IMPLEMENTED;
5034 t = mono_reflection_get_type (ass->image, &info, ignorecase, &type_resolve);
5035 }
5036 buffer_add_typeid (buf, domain, t ? mono_class_from_mono_type (t) : NULL);
5037 mono_reflection_free_type_info (&info);
5038 g_free (s);
5039
5040 break;
5041 }
5042 case CMD_ASSEMBLY_GET_NAME: {
5043 gchar *name;
5044 MonoAssembly *mass = ass;
5045
5046 name = g_strdup_printf (
5047 "%s, Version=%d.%d.%d.%d, Culture=%s, PublicKeyToken=%s%s",
5048 mass->aname.name,
5049 mass->aname.major, mass->aname.minor, mass->aname.build, mass->aname.revision,
5050 mass->aname.culture && *mass->aname.culture? mass->aname.culture: "neutral",
5051 mass->aname.public_key_token [0] ? (char *)mass->aname.public_key_token : "null",
5052 (mass->aname.flags & ASSEMBLYREF_RETARGETABLE_FLAG) ? ", Retargetable=Yes" : "");
5053
5054 buffer_add_string (buf, name);
5055 g_free (name);
5056 break;
5057 }
5058 default:
5059 return ERR_NOT_IMPLEMENTED;
5060 }
5061
5062 return ERR_NONE;
5063 }
5064
5065 static ErrorCode
5066 module_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5067 {
5068 int err;
5069 MonoDomain *domain;
5070
5071 switch (command) {
5072 case CMD_MODULE_GET_INFO: {
5073 MonoImage *image = decode_moduleid (p, &p, end, &domain, &err);
5074 char *basename;
5075
5076 basename = g_path_get_basename (image->name);
5077 buffer_add_string (buf, basename); // name
5078 buffer_add_string (buf, image->module_name); // scopename
5079 buffer_add_string (buf, image->name); // fqname
5080 buffer_add_string (buf, mono_image_get_guid (image)); // guid
5081 buffer_add_assemblyid (buf, domain, image->assembly); // assembly
5082 g_free (basename);
5083 break;
5084 }
5085 default:
5086 return ERR_NOT_IMPLEMENTED;
5087 }
5088
5089 return ERR_NONE;
5090 }
5091
5092 static void
5093 buffer_add_cattr_arg (Buffer *buf, MonoType *t, MonoDomain *domain, MonoObject *val)
5094 {
5095 if (val && val->vtable->klass == mono_defaults.monotype_class) {
5096 /* Special case these so the client doesn't have to handle Type objects */
5097
5098 buffer_add_byte (buf, VALUE_TYPE_ID_TYPE);
5099 buffer_add_typeid (buf, domain, mono_class_from_mono_type (((MonoReflectionType*)val)->type));
5100 } else if (MONO_TYPE_IS_REFERENCE (t))
5101 buffer_add_value (buf, t, &val, domain);
5102 else
5103 buffer_add_value (buf, t, mono_object_unbox (val), domain);
5104 }
5105
5106 static void
5107 buffer_add_cattrs (Buffer *buf, MonoDomain *domain, MonoImage *image, MonoClass *attr_klass, MonoCustomAttrInfo *cinfo)
5108 {
5109 int i, j;
5110 int nattrs = 0;
5111
5112 if (!cinfo) {
5113 buffer_add_int (buf, 0);
5114 return;
5115 }
5116
5117 for (i = 0; i < cinfo->num_attrs; ++i) {
5118 if (!attr_klass || mono_class_has_parent (cinfo->attrs [i].ctor->klass, attr_klass))
5119 nattrs ++;
5120 }
5121 buffer_add_int (buf, nattrs);
5122
5123 for (i = 0; i < cinfo->num_attrs; ++i) {
5124 MonoCustomAttrEntry *attr = &cinfo->attrs [i];
5125 if (!attr_klass || mono_class_has_parent (attr->ctor->klass, attr_klass)) {
5126 MonoArray *typed_args, *named_args;
5127 MonoType *t;
5128 CattrNamedArg *arginfo;
5129
5130 mono_reflection_create_custom_attr_data_args (image, attr->ctor, attr->data, attr->data_size, &typed_args, &named_args, &arginfo);
5131
5132 buffer_add_methodid (buf, domain, attr->ctor);
5133
5134 /* Ctor args */
5135 if (typed_args) {
5136 buffer_add_int (buf, mono_array_length (typed_args));
5137 for (j = 0; j < mono_array_length (typed_args); ++j) {
5138 MonoObject *val = mono_array_get (typed_args, MonoObject*, j);
5139
5140 t = mono_method_signature (attr->ctor)->params [j];
5141
5142 buffer_add_cattr_arg (buf, t, domain, val);
5143 }
5144 } else {
5145 buffer_add_int (buf, 0);
5146 }
5147
5148 /* Named args */
5149 if (named_args) {
5150 buffer_add_int (buf, mono_array_length (named_args));
5151
5152 for (j = 0; j < mono_array_length (named_args); ++j) {
5153 MonoObject *val = mono_array_get (named_args, MonoObject*, j);
5154
5155 if (arginfo [j].prop) {
5156 buffer_add_byte (buf, 0x54);
5157 buffer_add_propertyid (buf, domain, arginfo [j].prop);
5158 } else if (arginfo [j].field) {
5159 buffer_add_byte (buf, 0x53);
5160 } else {
5161 g_assert_not_reached ();
5162 }
5163
5164 buffer_add_cattr_arg (buf, arginfo [j].type, domain, val);
5165 }
5166 } else {
5167 buffer_add_int (buf, 0);
5168 }
5169 }
5170 }
5171 }
5172
5173 static ErrorCode
5174 type_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5175 {
5176 MonoClass *klass;
5177 MonoDomain *domain;
5178 MonoClass *nested;
5179 MonoType *type;
5180 gpointer iter;
5181 guint8 b;
5182 int err, nnested;
5183 char *name;
5184
5185 klass = decode_typeid (p, &p, end, &domain, &err);
5186 if (err)
5187 return err;
5188
5189 switch (command) {
5190 case CMD_TYPE_GET_INFO: {
5191 buffer_add_string (buf, klass->name_space);
5192 buffer_add_string (buf, klass->name);
5193 // FIXME: byref
5194 name = mono_type_get_name_full (&klass->byval_arg, MONO_TYPE_NAME_FORMAT_FULL_NAME);
5195 buffer_add_string (buf, name);
5196 g_free (name);
5197 buffer_add_assemblyid (buf, domain, klass->image->assembly);
5198 buffer_add_moduleid (buf, domain, klass->image);
5199 buffer_add_typeid (buf, domain, klass->parent);
5200 if (klass->rank || klass->byval_arg.type == MONO_TYPE_PTR)
5201 buffer_add_typeid (buf, domain, klass->element_class);
5202 else
5203 buffer_add_id (buf, 0);
5204 buffer_add_int (buf, klass->type_token);
5205 buffer_add_byte (buf, klass->rank);
5206 buffer_add_int (buf, klass->flags);
5207 b = 0;
5208 type = &klass->byval_arg;
5209 // FIXME: Can't decide whenever a class represents a byref type
5210 if (FALSE)
5211 b |= (1 << 0);
5212 if (type->type == MONO_TYPE_PTR)
5213 b |= (1 << 1);
5214 if (!type->byref && (((type->type >= MONO_TYPE_BOOLEAN) && (type->type <= MONO_TYPE_R8)) || (type->type == MONO_TYPE_I) || (type->type == MONO_TYPE_U)))
5215 b |= (1 << 2);
5216 if (type->type == MONO_TYPE_VALUETYPE)
5217 b |= (1 << 3);
5218 if (klass->enumtype)
5219 b |= (1 << 4);
5220 buffer_add_byte (buf, b);
5221 nnested = 0;
5222 iter = NULL;
5223 while ((nested = mono_class_get_nested_types (klass, &iter)))
5224 nnested ++;
5225 buffer_add_int (buf, nnested);
5226 iter = NULL;
5227 while ((nested = mono_class_get_nested_types (klass, &iter)))
5228 buffer_add_typeid (buf, domain, nested);
5229 break;
5230 }
5231 case CMD_TYPE_GET_METHODS: {
5232 int nmethods;
5233 int i = 0;
5234 gpointer iter = NULL;
5235 MonoMethod *m;
5236
5237 nmethods = mono_class_num_methods (klass);
5238
5239 buffer_add_int (buf, nmethods);
5240
5241 while ((m = mono_class_get_methods (klass, &iter))) {
5242 buffer_add_methodid (buf, domain, m);
5243 i ++;
5244 }
5245 g_assert (i == nmethods);
5246 break;
5247 }
5248 case CMD_TYPE_GET_FIELDS: {
5249 int nfields;
5250 int i = 0;
5251 gpointer iter = NULL;
5252 MonoClassField *f;
5253
5254 nfields = mono_class_num_fields (klass);
5255
5256 buffer_add_int (buf, nfields);
5257
5258 while ((f = mono_class_get_fields (klass, &iter))) {
5259 buffer_add_fieldid (buf, domain, f);
5260 buffer_add_string (buf, f->name);
5261 buffer_add_typeid (buf, domain, mono_class_from_mono_type (f->type));
5262 buffer_add_int (buf, f->type->attrs);
5263 i ++;
5264 }
5265 g_assert (i == nfields);
5266 break;
5267 }
5268 case CMD_TYPE_GET_PROPERTIES: {
5269 int nprops;
5270 int i = 0;
5271 gpointer iter = NULL;
5272 MonoProperty *p;
5273
5274 nprops = mono_class_num_properties (klass);
5275
5276 buffer_add_int (buf, nprops);
5277
5278 while ((p = mono_class_get_properties (klass, &iter))) {
5279 buffer_add_propertyid (buf, domain, p);
5280 buffer_add_string (buf, p->name);
5281 buffer_add_methodid (buf, domain, p->get);
5282 buffer_add_methodid (buf, domain, p->set);
5283 buffer_add_int (buf, p->attrs);
5284 i ++;
5285 }
5286 g_assert (i == nprops);
5287 break;
5288 }
5289 case CMD_TYPE_GET_CATTRS: {
5290 MonoClass *attr_klass = decode_typeid (p, &p, end, NULL, &err);
5291 MonoCustomAttrInfo *cinfo;
5292
5293 cinfo = mono_custom_attrs_from_class (klass);
5294
5295 buffer_add_cattrs (buf, domain, klass->image, attr_klass, cinfo);
5296 break;
5297 }
5298 case CMD_TYPE_GET_FIELD_CATTRS: {
5299 MonoClass *attr_klass;
5300 MonoCustomAttrInfo *cinfo;
5301 MonoClassField *field;
5302
5303 field = decode_fieldid (p, &p, end, NULL, &err);
5304 if (err)
5305 return err;
5306 attr_klass = decode_typeid (p, &p, end, NULL, &err);
5307 if (err)
5308 return err;
5309
5310 cinfo = mono_custom_attrs_from_field (klass, field);
5311
5312 buffer_add_cattrs (buf, domain, klass->image, attr_klass, cinfo);
5313 break;
5314 }
5315 case CMD_TYPE_GET_PROPERTY_CATTRS: {
5316 MonoClass *attr_klass;
5317 MonoCustomAttrInfo *cinfo;
5318 MonoProperty *prop;
5319
5320 prop = decode_propertyid (p, &p, end, NULL, &err);
5321 if (err)
5322 return err;
5323 attr_klass = decode_typeid (p, &p, end, NULL, &err);
5324 if (err)
5325 return err;
5326
5327 cinfo = mono_custom_attrs_from_property (klass, prop);
5328
5329 buffer_add_cattrs (buf, domain, klass->image, attr_klass, cinfo);
5330 break;
5331 }
5332 case CMD_TYPE_GET_VALUES: {
5333 guint8 *val;
5334 MonoClassField *f;
5335 MonoVTable *vtable;
5336 MonoClass *k;
5337 int len, i;
5338 gboolean found;
5339
5340 len = decode_int (p, &p, end);
5341 for (i = 0; i < len; ++i) {
5342 f = decode_fieldid (p, &p, end, NULL, &err);
5343 if (err)
5344 return err;
5345
5346 if (!(f->type->attrs & FIELD_ATTRIBUTE_STATIC))
5347 return ERR_INVALID_FIELDID;
5348 if (mono_class_field_is_special_static (f))
5349 return ERR_INVALID_FIELDID;
5350
5351 /* Check that the field belongs to the object */
5352 found = FALSE;
5353 for (k = klass; k; k = k->parent) {
5354 if (k == f->parent) {
5355 found = TRUE;
5356 break;
5357 }
5358 }
5359 if (!found)
5360 return ERR_INVALID_FIELDID;
5361
5362 vtable = mono_class_vtable (domain, f->parent);
5363 val = g_malloc (mono_class_instance_size (mono_class_from_mono_type (f->type)));
5364 mono_field_static_get_value (vtable, f, val);
5365 buffer_add_value (buf, f->type, val, domain);
5366 g_free (val);
5367 }
5368 break;
5369 }
5370 case CMD_TYPE_SET_VALUES: {
5371 guint8 *val;
5372 MonoClassField *f;
5373 MonoVTable *vtable;
5374 MonoClass *k;
5375 int len, i;
5376 gboolean found;
5377
5378 len = decode_int (p, &p, end);
5379 for (i = 0; i < len; ++i) {
5380 f = decode_fieldid (p, &p, end, NULL, &err);
5381 if (err)
5382 return err;
5383
5384 if (!(f->type->attrs & FIELD_ATTRIBUTE_STATIC))
5385 return ERR_INVALID_FIELDID;
5386 if (mono_class_field_is_special_static (f))
5387 return ERR_INVALID_FIELDID;
5388
5389 /* Check that the field belongs to the object */
5390 found = FALSE;
5391 for (k = klass; k; k = k->parent) {
5392 if (k == f->parent) {
5393 found = TRUE;
5394 break;
5395 }
5396 }
5397 if (!found)
5398 return ERR_INVALID_FIELDID;
5399
5400 // FIXME: Check for literal/const
5401
5402 vtable = mono_class_vtable (domain, f->parent);
5403 val = g_malloc (mono_class_instance_size (mono_class_from_mono_type (f->type)));
5404 err = decode_value (f->type, domain, val, p, &p, end);
5405 if (err) {
5406 g_free (val);
5407 return err;
5408 }
5409 mono_field_static_set_value (vtable, f, val);
5410 g_free (val);
5411 }
5412 break;
5413 }
5414 case CMD_TYPE_GET_OBJECT: {
5415 MonoObject *o = (MonoObject*)mono_type_get_object (mono_domain_get (), &klass->byval_arg);
5416 buffer_add_objid (buf, o);
5417 break;
5418 }
5419 case CMD_TYPE_GET_SOURCE_FILES: {
5420 gpointer iter = NULL;
5421 MonoMethod *method;
5422 char *source_file, *base;
5423 GPtrArray *files;
5424 int i;
5425
5426 files = g_ptr_array_new ();
5427
5428 while ((method = mono_class_get_methods (klass, &iter))) {
5429 MonoDebugMethodInfo *minfo = mono_debug_lookup_method (method);
5430
5431 if (minfo) {
5432 mono_debug_symfile_get_line_numbers (minfo, &source_file, NULL, NULL, NULL);
5433
5434 for (i = 0; i < files->len; ++i)
5435 if (!strcmp (g_ptr_array_index (files, i), source_file))
5436 break;
5437 if (i == files->len)
5438 g_ptr_array_add (files, g_strdup (source_file));
5439 g_free (source_file);
5440 }
5441 }
5442
5443 buffer_add_int (buf, files->len);
5444 for (i = 0; i < files->len; ++i) {
5445 source_file = g_ptr_array_index (files, i);
5446 base = g_path_get_basename (source_file);
5447 buffer_add_string (buf, base);
5448 g_free (base);
5449 g_free (source_file);
5450 }
5451 g_ptr_array_free (files, TRUE);
5452 break;
5453 }
5454 case CMD_TYPE_IS_ASSIGNABLE_FROM: {
5455 MonoClass *oklass = decode_typeid (p, &p, end, NULL, &err);
5456
5457 if (err)
5458 return err;
5459 if (mono_class_is_assignable_from (klass, oklass))
5460 buffer_add_byte (buf, 1);
5461 else
5462 buffer_add_byte (buf, 0);
5463 break;
5464 }
5465 default:
5466 return ERR_NOT_IMPLEMENTED;
5467 }
5468
5469 return ERR_NONE;
5470 }
5471
5472 static ErrorCode
5473 method_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5474 {
5475 int err;
5476 MonoDomain *domain;
5477 MonoMethod *method;
5478 MonoMethodHeader *header;
5479
5480 method = decode_methodid (p, &p, end, &domain, &err);
5481 if (err)
5482 return err;
5483
5484 switch (command) {
5485 case CMD_METHOD_GET_NAME: {
5486 buffer_add_string (buf, method->name);
5487 break;
5488 }
5489 case CMD_METHOD_GET_DECLARING_TYPE: {
5490 buffer_add_typeid (buf, domain, method->klass);
5491 break;
5492 }
5493 case CMD_METHOD_GET_DEBUG_INFO: {
5494 MonoDebugMethodInfo *minfo;
5495 char *source_file;
5496 int i, n_il_offsets;
5497 int *il_offsets;
5498 int *line_numbers;
5499
5500 header = mono_method_get_header (method);
5501 if (!header) {
5502 buffer_add_int (buf, 0);
5503 buffer_add_string (buf, "");
5504 buffer_add_int (buf, 0);
5505 break;
5506 }
5507
5508 minfo = mono_debug_lookup_method (method);
5509 if (!minfo) {
5510 buffer_add_int (buf, header->code_size);
5511 buffer_add_string (buf, "");
5512 buffer_add_int (buf, 0);
5513 break;
5514 }
5515
5516 mono_debug_symfile_get_line_numbers (minfo, &source_file, &n_il_offsets, &il_offsets, &line_numbers);
5517 buffer_add_int (buf, header->code_size);
5518 buffer_add_string (buf, source_file);
5519 buffer_add_int (buf, n_il_offsets);
5520 //printf ("Line number table for method %s:\n", mono_method_full_name (method, TRUE));
5521 for (i = 0; i < n_il_offsets; ++i) {
5522 //printf ("IL%d -> %d\n", il_offsets [i], line_numbers [i]);
5523 buffer_add_int (buf, il_offsets [i]);
5524 buffer_add_int (buf, line_numbers [i]);
5525 }
5526 g_free (source_file);
5527 g_free (il_offsets);
5528 g_free (line_numbers);
5529 break;
5530 }
5531 case CMD_METHOD_GET_PARAM_INFO: {
5532 MonoMethodSignature *sig = mono_method_signature (method);
5533 guint32 i;
5534 char **names;
5535
5536 /* FIXME: mono_class_from_mono_type () and byrefs */
5537
5538 /* FIXME: Use a smaller encoding */
5539 buffer_add_int (buf, sig->call_convention);
5540 buffer_add_int (buf, sig->param_count);
5541 buffer_add_int (buf, sig->generic_param_count);
5542 buffer_add_typeid (buf, domain, mono_class_from_mono_type (sig->ret));
5543 for (i = 0; i < sig->param_count; ++i) {
5544 /* FIXME: vararg */
5545 buffer_add_typeid (buf, domain, mono_class_from_mono_type (sig->params [i]));
5546 }
5547
5548 /* Emit parameter names */
5549 names = g_new (char *, sig->param_count);
5550 mono_method_get_param_names (method, (const char **) names);
5551 for (i = 0; i < sig->param_count; ++i)
5552 buffer_add_string (buf, names [i]);
5553 g_free (names);
5554
5555 break;
5556 }
5557 case CMD_METHOD_GET_LOCALS_INFO: {
5558 int i, j, num_locals;
5559 char **local_names;
5560 int *local_indexes;
5561
5562 header = mono_method_get_header (method);
5563 g_assert (header);
5564
5565 buffer_add_int (buf, header->num_locals);
5566
5567 /* Types */
5568 for (i = 0; i < header->num_locals; ++i)
5569 buffer_add_typeid (buf, domain, mono_class_from_mono_type (header->locals [i]));
5570
5571 /* Names */
5572 num_locals = mono_debug_lookup_locals (method, &local_names, &local_indexes);
5573 for (i = 0; i < header->num_locals; ++i) {
5574 for (j = 0; j < num_locals; ++j)
5575 if (local_indexes [j] == i)
5576 break;
5577 if (j < num_locals)
5578 buffer_add_string (buf, local_names [j]);
5579 else
5580 buffer_add_string (buf, "");
5581 }
5582 g_free (local_names);
5583 g_free (local_indexes);
5584
5585 /* Live ranges */
5586 /* FIXME: This works because we set debug_options.mdb_optimizations */
5587 for (i = 0; i < header->num_locals; ++i) {
5588 buffer_add_int (buf, 0);
5589 buffer_add_int (buf, header->code_size);
5590 }
5591
5592 break;
5593 }
5594 case CMD_METHOD_GET_INFO:
5595 buffer_add_int (buf, method->flags);
5596 buffer_add_int (buf, method->iflags);
5597 buffer_add_int (buf, method->token);
5598 break;
5599 case CMD_METHOD_GET_BODY: {
5600 int i;
5601
5602 header = mono_method_get_header (method);
5603 if (!header) {
5604 buffer_add_int (buf, 0);
5605 } else {
5606 buffer_add_int (buf, header->code_size);
5607 for (i = 0; i < header->code_size; ++i)
5608 buffer_add_byte (buf, header->code [i]);
5609 }
5610 break;
5611 }
5612 case CMD_METHOD_RESOLVE_TOKEN: {
5613 guint32 token = decode_int (p, &p, end);
5614
5615 // FIXME: Generics
5616 switch (mono_metadata_token_code (token)) {
5617 case MONO_TOKEN_STRING: {
5618 MonoString *s;
5619 char *s2;
5620
5621 s = mono_ldstr (domain, method->klass->image, mono_metadata_token_index (token));
5622 g_assert (s);
5623
5624 s2 = mono_string_to_utf8 (s);
5625
5626 buffer_add_byte (buf, TOKEN_TYPE_STRING);
5627 buffer_add_string (buf, s2);
5628 g_free (s2);
5629 break;
5630 }
5631 default: {
5632 gpointer val;
5633 MonoClass *handle_class;
5634
5635 if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
5636 val = mono_method_get_wrapper_data (method, token);
5637 handle_class = mono_method_get_wrapper_data (method, token + 1);
5638
5639 if (handle_class == NULL) {
5640 // Can't figure out the token type
5641 buffer_add_byte (buf, TOKEN_TYPE_UNKNOWN);
5642 break;
5643 }
5644 } else {
5645 val = mono_ldtoken (method->klass->image, token, &handle_class, NULL);
5646 g_assert (val);
5647 }
5648
5649 if (handle_class == mono_defaults.typehandle_class) {
5650 buffer_add_byte (buf, TOKEN_TYPE_TYPE);
5651 buffer_add_typeid (buf, domain, mono_class_from_mono_type ((MonoType*)val));
5652 } else if (handle_class == mono_defaults.fieldhandle_class) {
5653 buffer_add_byte (buf, TOKEN_TYPE_FIELD);
5654 buffer_add_fieldid (buf, domain, val);
5655 } else if (handle_class == mono_defaults.methodhandle_class) {
5656 buffer_add_byte (buf, TOKEN_TYPE_METHOD);
5657 buffer_add_methodid (buf, domain, val);
5658 } else if (handle_class == mono_defaults.string_class) {
5659 char *s;
5660
5661 s = mono_string_to_utf8 (val);
5662 buffer_add_byte (buf, TOKEN_TYPE_STRING);
5663 buffer_add_string (buf, s);
5664 g_free (s);
5665 } else {
5666 g_assert_not_reached ();
5667 }
5668 break;
5669 }
5670 }
5671 break;
5672 }
5673 default:
5674 return ERR_NOT_IMPLEMENTED;
5675 }
5676
5677 return ERR_NONE;
5678 }
5679
5680 static ErrorCode
5681 thread_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5682 {
5683 int objid = decode_objid (p, &p, end);
5684 int err;
5685 MonoThread *thread_obj;
5686 MonoInternalThread *thread;
5687
5688 err = get_object (objid, (MonoObject**)&thread_obj);
5689 if (err)
5690 return err;
5691
5692 thread = THREAD_TO_INTERNAL (thread_obj);
5693
5694 switch (command) {
5695 case CMD_THREAD_GET_NAME: {
5696 guint32 name_len;
5697 gunichar2 *s = mono_thread_get_name (thread, &name_len);
5698
5699 if (!s) {
5700 buffer_add_int (buf, 0);
5701 } else {
5702 char *name;
5703 glong len;
5704
5705 name = g_utf16_to_utf8 (s, name_len, NULL, &len, NULL);
5706 g_assert (name);
5707 buffer_add_int (buf, len);
5708 buffer_add_data (buf, (guint8*)name, len);
5709 g_free (s);
5710 }
5711 break;
5712 }
5713 case CMD_THREAD_GET_FRAME_INFO: {
5714 DebuggerTlsData *tls;
5715 int i, start_frame, length;
5716
5717 // Wait for suspending if it already started
5718 if (suspend_count)
5719 wait_for_suspend ();
5720 if (!is_suspended ())
5721 return ERR_NOT_SUSPENDED;
5722
5723 start_frame = decode_int (p, &p, end);
5724 length = decode_int (p, &p, end);
5725
5726 if (start_frame != 0 || length != -1)
5727 return ERR_NOT_IMPLEMENTED;
5728
5729 mono_loader_lock ();
5730 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
5731 mono_loader_unlock ();
5732 g_assert (tls);
5733
5734 compute_frame_info (thread, tls);
5735
5736 buffer_add_int (buf, tls->frame_count);
5737 for (i = 0; i < tls->frame_count; ++i) {
5738 buffer_add_int (buf, tls->frames [i]->id);
5739 buffer_add_methodid (buf, tls->frames [i]->domain, tls->frames [i]->method);
5740 buffer_add_int (buf, tls->frames [i]->il_offset);
5741 /*
5742 * Instead of passing the frame type directly to the client, we associate
5743 * it with the previous frame using a set of flags. This avoids lots of
5744 * conditional code in the client, since a frame whose type isn't
5745 * FRAME_TYPE_MANAGED has no method, location, etc.
5746 */
5747 buffer_add_byte (buf, tls->frames [i]->flags);
5748 }
5749
5750 break;
5751 }
5752 case CMD_THREAD_GET_STATE:
5753 buffer_add_int (buf, thread->state);
5754 break;
5755 case CMD_THREAD_GET_INFO:
5756 buffer_add_byte (buf, thread->threadpool_thread);
5757 break;
5758 default:
5759 return ERR_NOT_IMPLEMENTED;
5760 }
5761
5762 return ERR_NONE;
5763 }
5764
5765 static ErrorCode
5766 frame_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5767 {
5768 int objid;
5769 int err;
5770 MonoThread *thread_obj;
5771 MonoInternalThread *thread;
5772 int pos, i, len;
5773 DebuggerTlsData *tls;
5774 StackFrame *frame;
5775 MonoDebugMethodJitInfo *jit;
5776 MonoDebugVarInfo *var;
5777 MonoMethodSignature *sig;
5778 gssize id;
5779 MonoMethodHeader *header;
5780
5781 objid = decode_objid (p, &p, end);
5782 err = get_object (objid, (MonoObject**)&thread_obj);
5783 if (err)
5784 return err;
5785
5786 thread = THREAD_TO_INTERNAL (thread_obj);
5787
5788 id = decode_id (p, &p, end);
5789
5790 mono_loader_lock ();
5791 tls = mono_g_hash_table_lookup (thread_to_tls, thread);
5792 mono_loader_unlock ();
5793 g_assert (tls);
5794
5795 for (i = 0; i < tls->frame_count; ++i) {
5796 if (tls->frames [i]->id == id)
5797 break;
5798 }
5799 if (i == tls->frame_count)
5800 return ERR_INVALID_FRAMEID;
5801
5802 frame = tls->frames [i];
5803
5804 if (!frame->has_ctx)
5805 // FIXME:
5806 return ERR_INVALID_FRAMEID;
5807
5808 if (!frame->jit) {
5809 frame->jit = mono_debug_find_method (frame->method, frame->domain);
5810 g_assert (frame->jit);
5811 }
5812 jit = frame->jit;
5813
5814 sig = mono_method_signature (frame->method);
5815
5816 switch (command) {
5817 case CMD_STACK_FRAME_GET_VALUES: {
5818 len = decode_int (p, &p, end);
5819 header = mono_method_get_header (frame->method);
5820
5821 for (i = 0; i < len; ++i) {
5822 pos = decode_int (p, &p, end);
5823
5824 if (pos < 0) {
5825 pos = - pos - 1;
5826
5827 g_assert (pos >= 0 && pos < jit->num_params);
5828
5829 var = &jit->params [pos];
5830
5831 add_var (buf, sig->params [pos], &jit->params [pos], &frame->ctx, frame->domain, FALSE);
5832 } else {
5833 g_assert (pos >= 0 && pos < jit->num_locals);
5834
5835 var = &jit->locals [pos];
5836
5837 add_var (buf, header->locals [pos], &jit->locals [pos], &frame->ctx, frame->domain, FALSE);
5838 }
5839 }
5840 break;
5841 }
5842 case CMD_STACK_FRAME_GET_THIS: {
5843 if (frame->method->klass->valuetype) {
5844 if (!sig->hasthis) {
5845 MonoObject *p = NULL;
5846 buffer_add_value (buf, &mono_defaults.object_class->byval_arg, &p, frame->domain);
5847 } else {
5848 add_var (buf, &frame->method->klass->this_arg, jit->this_var, &frame->ctx, frame->domain, TRUE);
5849 }
5850 } else {
5851 if (!sig->hasthis) {
5852 MonoObject *p = NULL;
5853 buffer_add_value (buf, &frame->method->klass->byval_arg, &p, frame->domain);
5854 } else {
5855 add_var (buf, &frame->method->klass->byval_arg, jit->this_var, &frame->ctx, frame->domain, TRUE);
5856 }
5857 }
5858 break;
5859 }
5860 case CMD_STACK_FRAME_SET_VALUES: {
5861 guint8 *val_buf;
5862 MonoType *t;
5863 MonoDebugVarInfo *var;
5864
5865 len = decode_int (p, &p, end);
5866 header = mono_method_get_header (frame->method);
5867
5868 for (i = 0; i < len; ++i) {
5869 pos = decode_int (p, &p, end);
5870
5871 if (pos < 0) {
5872 pos = - pos - 1;
5873
5874 g_assert (pos >= 0 && pos < jit->num_params);
5875
5876 t = sig->params [pos];
5877 var = &jit->params [pos];
5878 } else {
5879 g_assert (pos >= 0 && pos < jit->num_locals);
5880
5881 t = header->locals [pos];
5882 var = &jit->locals [pos];
5883 }
5884
5885 if (MONO_TYPE_IS_REFERENCE (t))
5886 val_buf = g_alloca (sizeof (MonoObject*));
5887 else
5888 val_buf = g_alloca (mono_class_instance_size (mono_class_from_mono_type (t)));
5889 err = decode_value (t, frame->domain, val_buf, p, &p, end);
5890 if (err)
5891 return err;
5892
5893 set_var (t, var, &frame->ctx, frame->domain, val_buf);
5894 }
5895 break;
5896 }
5897 default:
5898 return ERR_NOT_IMPLEMENTED;
5899 }
5900
5901 return ERR_NONE;
5902 }
5903
5904 static ErrorCode
5905 array_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5906 {
5907 MonoArray *arr;
5908 int objid, err, index, len, i, esize;
5909 gpointer elem;
5910
5911 objid = decode_objid (p, &p, end);
5912 err = get_object (objid, (MonoObject**)&arr);
5913 if (err)
5914 return err;
5915
5916 switch (command) {
5917 case CMD_ARRAY_REF_GET_LENGTH:
5918 buffer_add_int (buf, arr->obj.vtable->klass->rank);
5919 if (!arr->bounds) {
5920 buffer_add_int (buf, arr->max_length);
5921 buffer_add_int (buf, 0);
5922 } else {
5923 for (i = 0; i < arr->obj.vtable->klass->rank; ++i) {
5924 buffer_add_int (buf, arr->bounds [i].length);
5925 buffer_add_int (buf, arr->bounds [i].lower_bound);
5926 }
5927 }
5928 break;
5929 case CMD_ARRAY_REF_GET_VALUES:
5930 index = decode_int (p, &p, end);
5931 len = decode_int (p, &p, end);
5932
5933 g_assert (index >= 0 && len >= 0);
5934 // Reordered to avoid integer overflow
5935 g_assert (!(index > arr->max_length - len));
5936
5937 esize = mono_array_element_size (arr->obj.vtable->klass);
5938 for (i = index; i < index + len; ++i) {
5939 elem = (gpointer*)((char*)arr->vector + (i * esize));
5940 buffer_add_value (buf, &arr->obj.vtable->klass->element_class->byval_arg, elem, arr->obj.vtable->domain);
5941 }
5942 break;
5943 case CMD_ARRAY_REF_SET_VALUES:
5944 index = decode_int (p, &p, end);
5945 len = decode_int (p, &p, end);
5946
5947 g_assert (index >= 0 && len >= 0);
5948 // Reordered to avoid integer overflow
5949 g_assert (!(index > arr->max_length - len));
5950
5951 esize = mono_array_element_size (arr->obj.vtable->klass);
5952 for (i = index; i < index + len; ++i) {
5953 elem = (gpointer*)((char*)arr->vector + (i * esize));
5954
5955 decode_value (&arr->obj.vtable->klass->element_class->byval_arg, arr->obj.vtable->domain, elem, p, &p, end);
5956 }
5957 break;
5958 default:
5959 return ERR_NOT_IMPLEMENTED;
5960 }
5961
5962 return ERR_NONE;
5963 }
5964
5965 static ErrorCode
5966 string_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5967 {
5968 int objid, err;
5969 MonoString *str;
5970 char *s;
5971
5972 objid = decode_objid (p, &p, end);
5973 err = get_object (objid, (MonoObject**)&str);
5974 if (err)
5975 return err;
5976
5977 switch (command) {
5978 case CMD_STRING_REF_GET_VALUE:
5979 s = mono_string_to_utf8 (str);
5980 buffer_add_string (buf, s);
5981 g_free (s);
5982 break;
5983 default:
5984 return ERR_NOT_IMPLEMENTED;
5985 }
5986
5987 return ERR_NONE;
5988 }
5989
5990 static ErrorCode
5991 object_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
5992 {
5993 int objid, err;
5994 MonoObject *obj;
5995 int len, i;
5996 MonoClassField *f;
5997 MonoClass *k;
5998 gboolean found;
5999
6000 if (command == CMD_OBJECT_REF_IS_COLLECTED) {
6001 objid = decode_objid (p, &p, end);
6002 err = get_object (objid, &obj);
6003 if (err)
6004 buffer_add_int (buf, 1);
6005 else
6006 buffer_add_int (buf, 0);
6007 return 0;
6008 }
6009
6010 objid = decode_objid (p, &p, end);
6011 err = get_object (objid, &obj);
6012 if (err)
6013 return err;
6014
6015 switch (command) {
6016 case CMD_OBJECT_REF_GET_TYPE:
6017 buffer_add_typeid (buf, obj->vtable->domain, obj->vtable->klass);
6018 break;
6019 case CMD_OBJECT_REF_GET_VALUES:
6020 len = decode_int (p, &p, end);
6021
6022 for (i = 0; i < len; ++i) {
6023 MonoClassField *f = decode_fieldid (p, &p, end, NULL, &err);
6024 if (err)
6025 return err;
6026
6027 /* Check that the field belongs to the object */
6028 found = FALSE;
6029 for (k = obj->vtable->klass; k; k = k->parent) {
6030 if (k == f->parent) {
6031 found = TRUE;
6032 break;
6033 }
6034 }
6035 if (!found)
6036 return ERR_INVALID_FIELDID;
6037
6038 if (f->type->attrs & FIELD_ATTRIBUTE_STATIC) {
6039 guint8 *val;
6040 MonoVTable *vtable;
6041
6042 if (mono_class_field_is_special_static (f))
6043 return ERR_INVALID_FIELDID;
6044
6045 g_assert (f->type->attrs & FIELD_ATTRIBUTE_STATIC);
6046 vtable = mono_class_vtable (obj->vtable->domain, f->parent);
6047 val = g_malloc (mono_class_instance_size (mono_class_from_mono_type (f->type)));
6048 mono_field_static_get_value (vtable, f, val);
6049 buffer_add_value (buf, f->type, val, obj->vtable->domain);
6050 g_free (val);
6051 } else {
6052 buffer_add_value (buf, f->type, (guint8*)obj + f->offset, obj->vtable->domain);
6053 }
6054 }
6055 break;
6056 case CMD_OBJECT_REF_SET_VALUES:
6057 len = decode_int (p, &p, end);
6058
6059 for (i = 0; i < len; ++i) {
6060 f = decode_fieldid (p, &p, end, NULL, &err);
6061 if (err)
6062 return err;
6063
6064 /* Check that the field belongs to the object */
6065 found = FALSE;
6066 for (k = obj->vtable->klass; k; k = k->parent) {
6067 if (k == f->parent) {
6068 found = TRUE;
6069 break;
6070 }
6071 }
6072 if (!found)
6073 return ERR_INVALID_FIELDID;
6074
6075 if (f->type->attrs & FIELD_ATTRIBUTE_STATIC) {
6076 guint8 *val;
6077 MonoVTable *vtable;
6078
6079 if (mono_class_field_is_special_static (f))
6080 return ERR_INVALID_FIELDID;
6081
6082 g_assert (f->type->attrs & FIELD_ATTRIBUTE_STATIC);
6083 vtable = mono_class_vtable (obj->vtable->domain, f->parent);
6084
6085 val = g_malloc (mono_class_instance_size (mono_class_from_mono_type (f->type)));
6086 err = decode_value (f->type, obj->vtable->domain, val, p, &p, end);
6087 if (err) {
6088 g_free (val);
6089 return err;
6090 }
6091 mono_field_static_set_value (vtable, f, val);
6092 g_free (val);
6093 } else {
6094 err = decode_value (f->type, obj->vtable->domain, (guint8*)obj + f->offset, p, &p, end);
6095 if (err)
6096 return err;
6097 }
6098 }
6099 break;
6100 case CMD_OBJECT_REF_GET_ADDRESS:
6101 buffer_add_long (buf, (gssize)obj);
6102 break;
6103 case CMD_OBJECT_REF_GET_DOMAIN:
6104 buffer_add_domainid (buf, obj->vtable->domain);
6105 break;
6106 default:
6107 return ERR_NOT_IMPLEMENTED;
6108 }
6109
6110 return ERR_NONE;
6111 }
6112
6113 static const char*
6114 command_set_to_string (CommandSet command_set)
6115 {
6116 switch (command_set) {
6117 case CMD_SET_VM:
6118 return "VM";
6119 case CMD_SET_OBJECT_REF:
6120 return "OBJECT_REF";
6121 case CMD_SET_STRING_REF:
6122 return "STRING_REF";
6123 case CMD_SET_THREAD:
6124 return "THREAD";
6125 case CMD_SET_ARRAY_REF:
6126 return "ARRAY_REF";
6127 case CMD_SET_EVENT_REQUEST:
6128 return "EVENT_REQUEST";
6129 case CMD_SET_STACK_FRAME:
6130 return "STACK_FRAME";
6131 case CMD_SET_APPDOMAIN:
6132 return "APPDOMAIN";
6133 case CMD_SET_ASSEMBLY:
6134 return "ASSEMBLY";
6135 case CMD_SET_METHOD:
6136 return "METHOD";
6137 case CMD_SET_TYPE:
6138 return "TYPE";
6139 case CMD_SET_MODULE:
6140 return "MODULE";
6141 case CMD_SET_EVENT:
6142 return "EVENT";
6143 default:
6144 return "";
6145 }
6146 }
6147
6148 /*
6149 * debugger_thread:
6150 *
6151 * This thread handles communication with the debugger client using a JDWP
6152 * like protocol.
6153 */
6154 static guint32 WINAPI
6155 debugger_thread (void *arg)
6156 {
6157 int res, len, id, flags, command_set, command;
6158 guint8 header [HEADER_LENGTH];
6159 guint8 *data, *p, *end;
6160 Buffer buf;
6161 ErrorCode err;
6162 gboolean no_reply;
6163
6164 DEBUG (1, fprintf (log_file, "[dbg] Agent thread started, pid=%p\n", (gpointer)GetCurrentThreadId ()));
6165
6166 debugger_thread_id = GetCurrentThreadId ();
6167
6168 mono_jit_thread_attach (mono_get_root_domain ());
6169
6170 mono_thread_internal_current ()->flags |= MONO_THREAD_FLAG_DONT_MANAGE;
6171
6172 mono_set_is_debugger_attached (TRUE);
6173
6174 while (TRUE) {
6175 res = recv (conn_fd, header, HEADER_LENGTH, 0);
6176
6177 /* This will break if the socket is closed during shutdown too */
6178 if (res != HEADER_LENGTH)
6179 break;
6180
6181 p = header;
6182 end = header + HEADER_LENGTH;
6183
6184 len = decode_int (p, &p, end);
6185 id = decode_int (p, &p, end);
6186 flags = decode_byte (p, &p, end);
6187 command_set = decode_byte (p, &p, end);
6188 command = decode_byte (p, &p, end);
6189
6190 g_assert (flags == 0);
6191
6192 DEBUG (1, fprintf (log_file, "[dbg] Received command %s(%d), id=%d.\n", command_set_to_string (command_set), command, id));
6193
6194 data = g_malloc (len - HEADER_LENGTH);
6195 if (len - HEADER_LENGTH > 0)
6196 {
6197 res = recv (conn_fd, data, len - HEADER_LENGTH, 0);
6198 if (res != len - HEADER_LENGTH)
6199 break;
6200 }
6201
6202 p = data;
6203 end = data + (len - HEADER_LENGTH);
6204
6205 buffer_init (&buf, 128);
6206
6207 err = ERR_NONE;
6208 no_reply = FALSE;
6209
6210 /* Process the request */
6211 switch (command_set) {
6212 case CMD_SET_VM:
6213 err = vm_commands (command, id, p, end, &buf);
6214 if (!err && command == CMD_VM_INVOKE_METHOD)
6215 /* Sent after the invoke is complete */
6216 no_reply = TRUE;
6217 break;
6218 case CMD_SET_EVENT_REQUEST:
6219 err = event_commands (command, p, end, &buf);
6220 break;
6221 case CMD_SET_APPDOMAIN:
6222 err = domain_commands (command, p, end, &buf);
6223 break;
6224 case CMD_SET_ASSEMBLY:
6225 err = assembly_commands (command, p, end, &buf);
6226 break;
6227 case CMD_SET_MODULE:
6228 err = module_commands (command, p, end, &buf);
6229 break;
6230 case CMD_SET_TYPE:
6231 err = type_commands (command, p, end, &buf);
6232 break;
6233 case CMD_SET_METHOD:
6234 err = method_commands (command, p, end, &buf);
6235 break;
6236 case CMD_SET_THREAD:
6237 err = thread_commands (command, p, end, &buf);
6238 break;
6239 case CMD_SET_STACK_FRAME:
6240 err = frame_commands (command, p, end, &buf);
6241 break;
6242 case CMD_SET_ARRAY_REF:
6243 err = array_commands (command, p, end, &buf);
6244 break;
6245 case CMD_SET_STRING_REF:
6246 err = string_commands (command, p, end, &buf);
6247 break;
6248 case CMD_SET_OBJECT_REF:
6249 err = object_commands (command, p, end, &buf);
6250 break;
6251 default:
6252 err = ERR_NOT_IMPLEMENTED;
6253 }
6254
6255 if (!no_reply)
6256 send_reply_packet (id, err, &buf);
6257
6258 g_free (data);
6259 buffer_free (&buf);
6260
6261 if (command_set == CMD_SET_VM && command == CMD_VM_DISPOSE)
6262 break;
6263 }
6264
6265 mono_set_is_debugger_attached (FALSE);
6266
6267 mono_mutex_lock (&debugger_thread_exited_mutex);
6268 debugger_thread_exited = TRUE;
6269 mono_cond_signal (&debugger_thread_exited_cond);
6270 mono_mutex_unlock (&debugger_thread_exited_mutex);
6271
6272 DEBUG (1, printf ("[dbg] Debugger thread exited.\n"));
6273
6274 return 0;
6275 }
6276
6277 #else /* DISABLE_DEBUGGER_AGENT */
6278
6279 void
6280 mono_debugger_agent_parse_options (char *options)
6281 {
6282 g_error ("This runtime is configure with the debugger agent disabled.");
6283 }
6284
6285 void
6286 mono_debugger_agent_init (void)
6287 {
6288 }
6289
6290 void
6291 mono_debugger_agent_breakpoint_hit (void *sigctx)
6292 {
6293 }
6294
6295 void
6296 mono_debugger_agent_single_step_event (void *sigctx)
6297 {
6298 }
6299
6300 void
6301 mono_debugger_agent_free_domain_info (MonoDomain *domain)
6302 {
6303 }
6304
6305 gboolean
6306 mono_debugger_agent_thread_interrupt (void *sigctx, MonoJitInfo *ji)
6307 {
6308 return FALSE;
6309 }
6310
6311 void
6312 mono_debugger_agent_handle_exception (MonoException *ext, MonoContext *ctx)
6313 {
6314 }
6315
6316 void
6317 mono_debugger_agent_handle_unhandled_exception (MonoException *exc, MonoContext *ctx)
6318 {
6319
6320 }
6321 #endif
6322
ppc64 and Haiku ports