#include <mono/metadata/mono-config.h>
#include <mono/metadata/mono-debug.h>
#include <mono/metadata/appdomain.h>
+#include <mono/metadata/threads-types.h>
+
+#define _IN_THE_MONO_DEBUGGER
#include <mono/metadata/mono-debug-debugger.h>
+#include "debug-mini.h"
#ifdef HAVE_VALGRIND_H
#include <valgrind/valgrind.h>
#endif
+#ifdef MONO_DEBUGGER_SUPPORTED
+#include <libgc/include/libgc-mono-debugger.h>
+#endif
+
+typedef struct {
+ guint32 index;
+ MonoMethodDesc *desc;
+} MiniDebugBreakpointInfo;
+
typedef struct
{
MonoDebugMethodJitInfo *jit;
guint32 breakpoint_id;
} MiniDebugMethodInfo;
+typedef struct {
+ MonoObject *last_exception;
+ guint32 stopped_on_exception : 1;
+ guint32 stopped_on_unhandled : 1;
+} MonoDebuggerExceptionState;
+
+struct _MonoDebuggerThreadInfo {
+ guint64 tid;
+ guint64 lmf_addr;
+ guint64 end_stack;
+
+ guint64 extended_notifications;
+
+ /* Next pointer. */
+ MonoDebuggerThreadInfo *next;
+
+ /*
+ * The stack bounds are only used when reading a core file.
+ */
+ guint64 stack_start;
+ guint64 signal_stack_start;
+ guint32 stack_size;
+ guint32 signal_stack_size;
+
+ MonoDebuggerExceptionState exception_state;
+
+ /*
+ * The debugger doesn't access anything beyond this point.
+ */
+ MonoJitTlsData *jit_tls;
+ MonoThread *thread;
+};
+
+typedef struct {
+ gpointer stack_pointer;
+ MonoObject *exception_obj;
+ guint32 stop;
+ guint32 stop_unhandled;
+} MonoDebuggerExceptionInfo;
+
+typedef enum {
+ MONO_DEBUGGER_EXCEPTION_ACTION_NONE = 0,
+ MONO_DEBUGGER_EXCEPTION_ACTION_STOP = 1,
+ MONO_DEBUGGER_EXCEPTION_ACTION_STOP_UNHANDLED = 2
+} MonoDebuggerExceptionAction;
+
+MonoDebuggerThreadInfo *mono_debugger_thread_table = NULL;
+
static inline void
record_line_number (MiniDebugMethodInfo *info, guint32 address, guint32 offset)
{
g_array_append_val (info->line_numbers, lne);
}
+
void
mono_debug_init_method (MonoCompile *cfg, MonoBasicBlock *start_block, guint32 breakpoint_id)
{
static void
write_variable (MonoInst *inst, MonoDebugVarInfo *var)
{
+ var->type = inst->inst_vtype;
+
if (inst->opcode == OP_REGVAR)
var->index = inst->dreg | MONO_DEBUG_VAR_ADDRESS_MODE_REGISTER;
+ else if (inst->flags & MONO_INST_IS_DEAD)
+ var->index = MONO_DEBUG_VAR_ADDRESS_MODE_DEAD;
else {
/* the debug interface needs fixing to allow 0(%base) address */
var->index = inst->inst_basereg | MONO_DEBUG_VAR_ADDRESS_MODE_REGOFFSET;
{
#ifdef VALGRIND_ADD_LINE_INFO
MonoMethodHeader *header;
+ MonoDebugMethodInfo *minfo;
int i;
char *filename = NULL;
guint32 address, line_number;
* into [addr-addr] ->line number mappings.
*/
- /* Create offset->line number mapping */
- for (i = 0; i < header->code_size; ++i) {
- char *fname;
+ minfo = mono_debug_lookup_method (method);
+ if (minfo) {
+ /* Create offset->line number mapping */
+ for (i = 0; i < header->code_size; ++i) {
+ MonoDebugSourceLocation *location;
+
+ location = mono_debug_symfile_lookup_location (minfo, i);
+ if (!location)
+ continue;
+
+ lines [i] = location.row;
+ if (!filename)
+ filename = location.source_file;
- fname = mono_debug_source_location_from_il_offset (method, i, &lines [i]);
- if (!filename)
- filename = fname;
+ mono_debug_free_source_location (location);
+ }
}
/* Create address->offset mapping */
MonoDebugMethodJitInfo *jit;
MonoMethodHeader *header;
MonoMethodSignature *sig;
+ MonoDebugMethodAddress *debug_info;
MonoMethod *method;
int i;
jit->epilogue_begin = cfg->epilog_begin;
jit->code_size = cfg->code_len;
- record_line_number (info, jit->epilogue_begin, header->code_size);
+ if (jit->epilogue_begin)
+ record_line_number (info, jit->epilogue_begin, header->code_size);
jit->num_params = sig->param_count;
jit->params = g_new0 (MonoDebugVarInfo, jit->num_params);
for (i = 0; i < jit->num_locals; i++)
- write_variable (cfg->varinfo [cfg->locals_start + i], &jit->locals [i]);
+ write_variable (cfg->locals [i], &jit->locals [i]);
if (sig->hasthis) {
jit->this_var = g_new0 (MonoDebugVarInfo, 1);
- write_variable (cfg->varinfo [0], jit->this_var);
+ write_variable (cfg->args [0], jit->this_var);
}
for (i = 0; i < jit->num_params; i++)
- write_variable (cfg->varinfo [i + sig->hasthis], &jit->params [i]);
+ write_variable (cfg->args [i + sig->hasthis], &jit->params [i]);
jit->num_line_numbers = info->line_numbers->len;
jit->line_numbers = g_new0 (MonoDebugLineNumberEntry, jit->num_line_numbers);
for (i = 0; i < jit->num_line_numbers; i++)
jit->line_numbers [i] = g_array_index (info->line_numbers, MonoDebugLineNumberEntry, i);
- mono_debug_add_method (method, jit, cfg->domain);
+ debug_info = mono_debug_add_method (method, jit, cfg->domain);
mono_debug_add_vg_method (method, jit);
if (info->breakpoint_id)
mono_debugger_breakpoint_callback (method, info->breakpoint_id);
+ mono_debugger_check_breakpoints (method, debug_info);
+
mono_debug_free_method_jit_info (jit);
g_array_free (info->line_numbers, TRUE);
g_free (info);
record_line_number (info, address, offset);
}
+void
+mono_debug_open_block (MonoCompile *cfg, MonoBasicBlock *bb, guint32 address)
+{
+ MiniDebugMethodInfo *info;
+ MonoMethodHeader *header;
+ guint32 offset;
+
+ info = (MiniDebugMethodInfo *) cfg->debug_info;
+ if (!info || !info->jit || !bb->cil_code)
+ return;
+
+ header = mono_method_get_header (cfg->method);
+ g_assert (header);
+
+ if ((bb->cil_code < header->code) ||
+ (bb->cil_code > header->code + header->code_size))
+ return;
+
+ offset = bb->cil_code - header->code;
+ if (!info->has_line_numbers) {
+ info->jit->prologue_end = address;
+ info->has_line_numbers = TRUE;
+ }
+
+ record_line_number (info, address, offset);
+}
+
static inline void
encode_value (gint32 value, guint8 *buf, guint8 **endbuf)
{
{
guint32 flags = var->index & MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS;
+ encode_value (var->index, p, &p);
+
switch (flags) {
case MONO_DEBUG_VAR_ADDRESS_MODE_REGISTER:
- encode_value (var->index, p, &p);
break;
case MONO_DEBUG_VAR_ADDRESS_MODE_REGOFFSET:
- encode_value (var->index, p, &p);
encode_value (var->offset, p, &p);
break;
+ case MONO_DEBUG_VAR_ADDRESS_MODE_DEAD:
+ break;
default:
g_assert_not_reached ();
}
void
mono_debug_serialize_debug_info (MonoCompile *cfg, guint8 **out_buf, guint32 *buf_len)
{
- MiniDebugMethodInfo *info;
MonoDebugMethodJitInfo *jit;
guint32 size, prev_offset, prev_native_offset;
guint8 *buf, *p;
int i;
- info = (MiniDebugMethodInfo *) cfg->debug_info;
- if (!info || !info->jit) {
+ /* Can't use cfg->debug_info as it is freed by close_method () */
+ jit = mono_debug_find_method (cfg->method, mono_domain_get ());
+ if (!jit) {
*buf_len = 0;
return;
}
- jit = info->jit;
size = ((jit->num_params + jit->num_locals + 1) * 10) + (jit->num_line_numbers * 10) + 64;
p = buf = g_malloc (size);
case MONO_DEBUG_VAR_ADDRESS_MODE_REGOFFSET:
var->offset = decode_value (p, &p);
break;
+ case MONO_DEBUG_VAR_ADDRESS_MODE_DEAD:
+ break;
default:
g_assert_not_reached ();
}
jit = deserialize_debug_info (method, code_start, debug_info, debug_info_len);
-#if 0
- jit = mono_debug_read_method ((MonoDebugMethodAddress *) debug_info);
- jit->code_start = code_start;
- jit->wrapper_addr = NULL;
-#endif
-
mono_debug_add_method (method, jit, domain);
mono_debug_add_vg_method (method, jit);
// mono_debug_add_wrapper (method, callinfo->wrapper, callinfo->func);
}
+
+static void
+print_var_info (MonoDebugVarInfo *info, int idx, const char *name, const char *type)
+{
+ switch (info->index & MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS) {
+ case MONO_DEBUG_VAR_ADDRESS_MODE_REGISTER:
+ g_print ("%s %s (%d) in register %s\n", type, name, idx, mono_arch_regname (info->index & (~MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS)));
+ break;
+ case MONO_DEBUG_VAR_ADDRESS_MODE_REGOFFSET:
+ g_print ("%s %s (%d) in memory: base register %s + %d\n", type, name, idx, mono_arch_regname (info->index & (~MONO_DEBUG_VAR_ADDRESS_MODE_FLAGS)), info->offset);
+ break;
+ case MONO_DEBUG_VAR_ADDRESS_MODE_TWO_REGISTERS:
+ default:
+ g_assert_not_reached ();
+ }
+}
+
+/**
+ * mono_debug_print_locals:
+ *
+ * Prints to stdout the information about the local variables in
+ * a method (if @only_arguments is false) or about the arguments.
+ * The information includes the storage info (where the variable
+ * lives, in a register or in memory).
+ * The method is found by looking up what method has been emitted at
+ * the instruction address @ip.
+ * This is for use inside a debugger.
+ */
+void
+mono_debug_print_vars (gpointer ip, gboolean only_arguments)
+{
+ MonoDomain *domain = mono_domain_get ();
+ MonoJitInfo *ji = mono_jit_info_table_find (domain, ip);
+ MonoDebugMethodJitInfo *jit;
+ int i;
+
+ if (!ji)
+ return;
+
+ jit = mono_debug_find_method (mono_jit_info_get_method (ji), domain);
+ if (!jit)
+ return;
+
+ if (only_arguments) {
+ char **names;
+ names = g_new (char *, jit->num_params);
+ mono_method_get_param_names (mono_jit_info_get_method (ji), (const char **) names);
+ if (jit->this_var)
+ print_var_info (jit->this_var, 0, "this", "Arg");
+ for (i = 0; i < jit->num_params; ++i) {
+ print_var_info (&jit->params [i], i, names [i]? names [i]: "unknown name", "Arg");
+ }
+ g_free (names);
+ } else {
+ for (i = 0; i < jit->num_locals; ++i) {
+ print_var_info (&jit->locals [i], i, "", "Local");
+ }
+ }
+ mono_debug_free_method_jit_info (jit);
+}
+
+/*
+ * The old Debugger breakpoint interface.
+ *
+ * This interface is used to insert breakpoints on methods which are not yet JITed.
+ * The debugging code keeps a list of all such breakpoints and automatically inserts the
+ * breakpoint when the method is JITed.
+ */
+
+static GPtrArray *breakpoints = NULL;
+
+int
+mono_debugger_insert_breakpoint_full (MonoMethodDesc *desc)
+{
+ static int last_breakpoint_id = 0;
+ MiniDebugBreakpointInfo *info;
+
+ info = g_new0 (MiniDebugBreakpointInfo, 1);
+ info->desc = desc;
+ info->index = ++last_breakpoint_id;
+
+ if (!breakpoints)
+ breakpoints = g_ptr_array_new ();
+
+ g_ptr_array_add (breakpoints, info);
+
+ return info->index;
+}
+
+int
+mono_debugger_remove_breakpoint (int breakpoint_id)
+{
+ int i;
+
+ if (!breakpoints)
+ return 0;
+
+ for (i = 0; i < breakpoints->len; i++) {
+ MiniDebugBreakpointInfo *info = g_ptr_array_index (breakpoints, i);
+
+ if (info->index != breakpoint_id)
+ continue;
+
+ mono_method_desc_free (info->desc);
+ g_ptr_array_remove (breakpoints, info);
+ g_free (info);
+ return 1;
+ }
+
+ return 0;
+}
+
+int
+mono_debugger_insert_breakpoint (const gchar *method_name, gboolean include_namespace)
+{
+ MonoMethodDesc *desc;
+
+ desc = mono_method_desc_new (method_name, include_namespace);
+ if (!desc)
+ return 0;
+
+ return mono_debugger_insert_breakpoint_full (desc);
+}
+
+int
+mono_debugger_method_has_breakpoint (MonoMethod *method)
+{
+ int i;
+
+ if (!breakpoints || (method->wrapper_type != MONO_WRAPPER_NONE))
+ return 0;
+
+ for (i = 0; i < breakpoints->len; i++) {
+ MiniDebugBreakpointInfo *info = g_ptr_array_index (breakpoints, i);
+
+ if (!mono_method_desc_full_match (info->desc, method))
+ continue;
+
+ return info->index;
+ }
+
+ return 0;
+}
+
+void
+mono_debugger_breakpoint_callback (MonoMethod *method, guint32 index)
+{
+ mono_debugger_event (MONO_DEBUGGER_EVENT_JIT_BREAKPOINT, (guint64) (gsize) method, index);
+}
+
+void
+mono_debugger_thread_created (gsize tid, MonoThread *thread, MonoJitTlsData *jit_tls)
+{
+#ifdef MONO_DEBUGGER_SUPPORTED
+ size_t stsize = 0;
+ guint8 *staddr = NULL;
+ MonoDebuggerThreadInfo *info;
+
+ if (mono_debug_format == MONO_DEBUG_FORMAT_NONE)
+ return;
+
+ mono_debugger_lock ();
+
+ mono_thread_get_stack_bounds (&staddr, &stsize);
+
+ info = g_new0 (MonoDebuggerThreadInfo, 1);
+ info->tid = tid;
+ info->thread = thread;
+ info->stack_start = (guint64) (gsize) staddr;
+ info->signal_stack_start = (guint64) (gsize) jit_tls->signal_stack;
+ info->stack_size = stsize;
+ info->signal_stack_size = jit_tls->signal_stack_size;
+ info->end_stack = (guint64) (gsize) GC_mono_debugger_get_stack_ptr ();
+ info->lmf_addr = (guint64) (gsize) mono_get_lmf_addr ();
+ info->jit_tls = jit_tls;
+
+ info->next = mono_debugger_thread_table;
+ mono_debugger_thread_table = info;
+
+ mono_debugger_event (MONO_DEBUGGER_EVENT_THREAD_CREATED,
+ tid, (guint64) (gsize) info);
+
+ mono_debugger_unlock ();
+#endif /* MONO_DEBUGGER_SUPPORTED */
+}
+
+void
+mono_debugger_thread_cleanup (MonoJitTlsData *jit_tls)
+{
+#ifdef MONO_DEBUGGER_SUPPORTED
+ MonoDebuggerThreadInfo **ptr;
+
+ if (mono_debug_format == MONO_DEBUG_FORMAT_NONE)
+ return;
+
+ mono_debugger_lock ();
+
+ for (ptr = &mono_debugger_thread_table; *ptr; ptr = &(*ptr)->next) {
+ MonoDebuggerThreadInfo *info = *ptr;
+
+ if (info->jit_tls != jit_tls)
+ continue;
+
+ mono_debugger_event (MONO_DEBUGGER_EVENT_THREAD_CLEANUP,
+ info->tid, (guint64) (gsize) info);
+
+ *ptr = info->next;
+ g_free (info);
+ break;
+ }
+
+ mono_debugger_unlock ();
+#endif
+}
+
+void
+mono_debugger_extended_notification (MonoDebuggerEvent event, guint64 data, guint64 arg)
+{
+#ifdef MONO_DEBUGGER_SUPPORTED
+ MonoDebuggerThreadInfo **ptr;
+ MonoThread *thread = mono_thread_current ();
+
+ if (!mono_debug_using_mono_debugger ())
+ return;
+
+ mono_debugger_lock ();
+
+ for (ptr = &mono_debugger_thread_table; *ptr; ptr = &(*ptr)->next) {
+ MonoDebuggerThreadInfo *info = *ptr;
+
+ if (info->thread != thread)
+ continue;
+
+ if ((info->extended_notifications & (int) event) == 0)
+ continue;
+
+ mono_debugger_event (event, data, arg);
+ }
+
+ mono_debugger_unlock ();
+#endif
+}
+
+void
+mono_debugger_trampoline_compiled (MonoMethod *method, const guint8 *code)
+{
+ mono_debugger_extended_notification (MONO_DEBUGGER_EVENT_TRAMPOLINE,
+ (guint64) (gsize) method, (guint64) (gsize) code);
+}
+
+#if MONO_DEBUGGER_SUPPORTED
+static MonoDebuggerThreadInfo *
+find_debugger_thread_info (MonoThread *thread)
+{
+ MonoDebuggerThreadInfo **ptr;
+
+ for (ptr = &mono_debugger_thread_table; *ptr; ptr = &(*ptr)->next) {
+ MonoDebuggerThreadInfo *info = *ptr;
+
+ if (info->thread == thread)
+ return info;
+ }
+
+ return NULL;
+}
+#endif
+
+static MonoDebuggerExceptionAction
+_mono_debugger_throw_exception (gpointer addr, gpointer stack, MonoObject *exc)
+{
+#ifdef MONO_DEBUGGER_SUPPORTED
+ MonoDebuggerExceptionInfo exc_info;
+ MonoDebuggerThreadInfo *thread_info;
+
+ if (!mono_debug_using_mono_debugger ())
+ return MONO_DEBUGGER_EXCEPTION_ACTION_NONE;
+
+ mono_debugger_lock ();
+
+ thread_info = find_debugger_thread_info (mono_thread_current ());
+ if (!thread_info) {
+ mono_debugger_unlock ();
+ return MONO_DEBUGGER_EXCEPTION_ACTION_NONE;
+ }
+
+ if (thread_info->exception_state.stopped_on_exception ||
+ thread_info->exception_state.stopped_on_unhandled) {
+ thread_info->exception_state.stopped_on_exception = 0;
+ mono_debugger_unlock ();
+ return MONO_DEBUGGER_EXCEPTION_ACTION_NONE;
+ }
+
+ /* Protect the exception object from being garbage collected. */
+
+ thread_info->exception_state.stopped_on_unhandled = 0;
+ thread_info->exception_state.stopped_on_exception = 1;
+ thread_info->exception_state.last_exception = exc;
+
+ /*
+ * Backwards compatibility:
+ *
+ * Older debugger versions only know `exc_info.stop' and older runtime versions check
+ * `exc_info.stop != 0'.
+ *
+ * The debugger must check for `mono_debug_debugger_version >= 5' before accessing the
+ * `stop_unhandled' field.
+ */
+
+ exc_info.stack_pointer = stack;
+ exc_info.exception_obj = exc;
+ exc_info.stop = 0;
+ exc_info.stop_unhandled = 0;
+
+ mono_debugger_event (MONO_DEBUGGER_EVENT_THROW_EXCEPTION, (guint64) (gsize) &exc_info,
+ (guint64) (gsize) addr);
+
+ if (!exc_info.stop) {
+ thread_info->exception_state.stopped_on_exception = 0;
+ thread_info->exception_state.last_exception = NULL;
+ }
+
+ mono_debugger_unlock ();
+
+ if (exc_info.stop)
+ return MONO_DEBUGGER_EXCEPTION_ACTION_STOP;
+ else if (exc_info.stop_unhandled)
+ return MONO_DEBUGGER_EXCEPTION_ACTION_STOP_UNHANDLED;
+#endif
+
+ return MONO_DEBUGGER_EXCEPTION_ACTION_NONE;
+}
+
+static gboolean
+_mono_debugger_unhandled_exception (gpointer addr, gpointer stack, MonoObject *exc)
+{
+#ifdef MONO_DEBUGGER_SUPPORTED
+ MonoDebuggerThreadInfo *thread_info;
+
+ if (!mono_debug_using_mono_debugger ())
+ return FALSE;
+
+ if (exc) {
+ const gchar *name = mono_class_get_name (mono_object_get_class (exc));
+ if (!strcmp (name, "ThreadAbortException"))
+ return FALSE;
+ }
+
+ mono_debugger_lock ();
+
+ thread_info = find_debugger_thread_info (mono_thread_current ());
+ if (!thread_info) {
+ mono_debugger_unlock ();
+ return FALSE;
+ }
+
+ if (thread_info->exception_state.stopped_on_unhandled) {
+ thread_info->exception_state.stopped_on_unhandled = 0;
+ mono_debugger_unlock ();
+ return FALSE;
+ }
+
+ thread_info->exception_state.stopped_on_unhandled = 1;
+ thread_info->exception_state.last_exception = exc;
+
+ mono_debugger_event (MONO_DEBUGGER_EVENT_UNHANDLED_EXCEPTION,
+ (guint64) (gsize) exc, (guint64) (gsize) addr);
+
+ return TRUE;
+#else
+ return FALSE;
+#endif
+}
+
+/*
+ * mono_debugger_call_exception_handler:
+ *
+ * Called from mono_handle_exception_internal() to tell the debugger that we're about
+ * to invoke an exception handler.
+ *
+ * The debugger may choose to set a breakpoint at @addr. This is used if the user is
+ * single-stepping from a `try' into a `catch' block, for instance.
+ */
+
+void
+mono_debugger_call_exception_handler (gpointer addr, gpointer stack, MonoObject *exc)
+{
+#ifdef MONO_DEBUGGER_SUPPORTED
+ MonoDebuggerThreadInfo *thread_info;
+ MonoDebuggerExceptionInfo exc_info;
+
+ if (!mono_debug_using_mono_debugger ())
+ return;
+
+ mono_debugger_lock ();
+
+ thread_info = find_debugger_thread_info (mono_thread_current ());
+ if (!thread_info) {
+ mono_debugger_unlock ();
+ return;
+ }
+
+ // Prevent the object from being finalized.
+ thread_info->exception_state.last_exception = exc;
+
+ exc_info.stack_pointer = stack;
+ exc_info.exception_obj = exc;
+ exc_info.stop = 0;
+ exc_info.stop_unhandled = 0;
+
+ mono_debugger_event (MONO_DEBUGGER_EVENT_HANDLE_EXCEPTION, (guint64) (gsize) &exc_info,
+ (guint64) (gsize) addr);
+
+ mono_debugger_unlock ();
+#endif
+}
+
+/*
+ * mono_debugger_handle_exception:
+ *
+ * Notify the debugger about exceptions. Returns TRUE if the debugger wants us to stop
+ * at the exception and FALSE to resume with the normal exception handling.
+ *
+ * The arch code is responsible to setup @ctx in a way that MONO_CONTEXT_GET_IP () and
+ * MONO_CONTEXT_GET_SP () point to the throw instruction; ie. before executing the
+ * `callq throw' instruction.
+ */
+gboolean
+mono_debugger_handle_exception (MonoContext *ctx, MonoObject *obj)
+{
+ MonoDebuggerExceptionAction action;
+
+ if (!mono_debug_using_mono_debugger ())
+ return FALSE;
+
+ if (!obj) {
+ MonoException *ex = mono_get_exception_null_reference ();
+ MONO_OBJECT_SETREF (ex, message, mono_string_new (mono_domain_get (), "Object reference not set to an instance of an object"));
+ obj = (MonoObject *)ex;
+ }
+
+ action = _mono_debugger_throw_exception (MONO_CONTEXT_GET_IP (ctx), MONO_CONTEXT_GET_SP (ctx), obj);
+
+ if (action == MONO_DEBUGGER_EXCEPTION_ACTION_STOP) {
+ /*
+ * The debugger wants us to stop on the `throw' instruction.
+ * By the time we get here, it already inserted a breakpoint there.
+ */
+ return TRUE;
+ } else if (action == MONO_DEBUGGER_EXCEPTION_ACTION_STOP_UNHANDLED) {
+ MonoContext ctx_cp = *ctx;
+
+ /*
+ * The debugger wants us to stop only if this exception is user-unhandled.
+ */
+
+ if (!mono_handle_exception (&ctx_cp, obj, MONO_CONTEXT_GET_IP (ctx), TRUE)) {
+ /*
+ * The exception is user-unhandled - tell the debugger to stop.
+ */
+ return _mono_debugger_unhandled_exception (MONO_CONTEXT_GET_IP (ctx), MONO_CONTEXT_GET_SP (ctx), obj);
+ }
+
+ /*
+ * The exception is catched somewhere - resume with the normal exception handling and don't
+ * stop in the debugger.
+ */
+ }
+
+ return FALSE;
+}
+
+#ifdef MONO_DEBUGGER_SUPPORTED
+
+static gchar *
+get_exception_message (MonoObject *exc)
+{
+ char *message = NULL;
+ MonoString *str;
+ MonoMethod *method;
+ MonoClass *klass;
+ gint i;
+
+ if (mono_object_isinst (exc, mono_defaults.exception_class)) {
+ klass = exc->vtable->klass;
+ method = NULL;
+ while (klass && method == NULL) {
+ for (i = 0; i < klass->method.count; ++i) {
+ method = klass->methods [i];
+ if (!strcmp ("ToString", method->name) &&
+ mono_method_signature (method)->param_count == 0 &&
+ method->flags & METHOD_ATTRIBUTE_VIRTUAL &&
+ method->flags & METHOD_ATTRIBUTE_PUBLIC) {
+ break;
+ }
+ method = NULL;
+ }
+
+ if (method == NULL)
+ klass = klass->parent;
+ }
+
+ g_assert (method);
+
+ str = (MonoString *) mono_runtime_invoke (method, exc, NULL, NULL);
+ if (str)
+ message = mono_string_to_utf8 (str);
+ }
+
+ return message;
+}
+
+MonoObject *
+mono_debugger_runtime_invoke (MonoMethod *method, void *obj, void **params, MonoObject **exc)
+{
+ MonoDebuggerThreadInfo *thread_info;
+ MonoDebuggerExceptionState saved_exception_state;
+ MonoObject *retval;
+ gchar *message;
+
+ mono_debugger_lock ();
+
+ thread_info = find_debugger_thread_info (mono_thread_current ());
+ if (!thread_info) {
+ mono_debugger_unlock ();
+ return NULL;
+ }
+
+ saved_exception_state = thread_info->exception_state;
+
+ thread_info->exception_state.last_exception = NULL;
+ thread_info->exception_state.stopped_on_unhandled = 0;
+ thread_info->exception_state.stopped_on_exception = 0;
+
+ mono_debugger_unlock ();
+
+ if (!strcmp (method->name, ".ctor")) {
+ retval = obj = mono_object_new (mono_domain_get (), method->klass);
+
+ mono_runtime_invoke (method, obj, params, exc);
+ } else
+ retval = mono_runtime_invoke (method, obj, params, exc);
+
+ mono_debugger_lock ();
+
+ thread_info = find_debugger_thread_info (mono_thread_current ());
+ if (thread_info)
+ thread_info->exception_state = saved_exception_state;
+
+ mono_debugger_unlock ();
+
+ if (!exc || (*exc == NULL))
+ return retval;
+
+ retval = *exc;
+ message = get_exception_message (*exc);
+ if (message) {
+ *exc = (MonoObject *) mono_string_new_wrapper (message);
+ g_free (message);
+ }
+
+ return retval;
+}
+
+#endif
projects / mono.git / blobdiff