#include <mono/metadata/gc-internals.h>
#include <mono/metadata/debug-internals.h>
#include <mono/metadata/mono-debug.h>
-#include <mono/metadata/profiler.h>
+#include <mono/metadata/profiler-private.h>
#include <mono/metadata/mono-endian.h>
#include <mono/metadata/environment.h>
#include <mono/metadata/mono-mlist.h>
#include "mini-llvm-cpp.h"
#endif
+#ifdef TARGET_ARM
+#include "mini-arm.h"
+#endif
+
#ifndef MONO_ARCH_CONTEXT_DEF
#define MONO_ARCH_CONTEXT_DEF
#endif
#define MONO_ARCH_STACK_GROWS_UP 0
#endif
+/*
+ * Raw frame information is stored in MonoException.trace_ips as an IntPtr[].
+ * This structure represents one entry.
+ * This should consists of pointers only.
+ */
+typedef struct
+{
+ gpointer ip;
+ gpointer generic_info;
+} ExceptionTraceIp;
+
+/* Number of words in trace_ips belonging to one entry */
+#define TRACE_IP_ENTRY_SIZE (sizeof (ExceptionTraceIp) / sizeof (gpointer))
+
static gpointer restore_context_func, call_filter_func;
static gpointer throw_exception_func, rethrow_exception_func;
static gpointer throw_corlib_exception_func;
static void mono_raise_exception_with_ctx (MonoException *exc, MonoContext *ctx);
static void mono_runtime_walk_stack_with_ctx (MonoJitStackWalk func, MonoContext *start_ctx, MonoUnwindOptions unwind_options, void *user_data);
static gboolean mono_current_thread_has_handle_block_guard (void);
+static gboolean mono_install_handler_block_guard (MonoThreadUnwindState *ctx);
static gboolean
first_managed (MonoStackFrameInfo *frame, MonoContext *ctx, gpointer addr)
for (i = 0; i < table->num_holes; ++i) {
MonoTryBlockHoleJitInfo *hole = &table->holes [i];
- if (hole->clause == clause && hole->offset <= offset && hole->offset + hole->length > offset)
+ if (ji->clauses [hole->clause].try_offset == ji->clauses [clause].try_offset && hole->offset <= offset && hole->offset + hole->length > offset)
return FALSE;
}
return TRUE;
memset (unwinder, 0, sizeof (Unwinder));
}
-#if defined(GNUC) && defined(TARGET_ARM64)
+#if defined(__GNUC__) && defined(TARGET_ARM64)
/* gcc 4.9.2 seems to miscompile this on arm64 */
static __attribute__((optimize("O0"))) gboolean
#else
if (ta == NULL)
return FALSE;
- len = mono_array_length (ta) >> 1;
+ len = mono_array_length (ta) / TRACE_IP_ENTRY_SIZE;
for (i = 0; i < len; i++) {
- gpointer ip = mono_array_get (ta, gpointer, i * 2 + 0);
- gpointer generic_info = mono_array_get (ta, gpointer, i * 2 + 1);
+ ExceptionTraceIp trace_ip;
+
+ memcpy (&trace_ip, mono_array_addr_fast (ta, ExceptionTraceIp, i), sizeof (ExceptionTraceIp));
+ gpointer ip = trace_ip.ip;
+ gpointer generic_info = trace_ip.generic_info;
MonoJitInfo *ji = mono_jit_info_table_find (domain, (char *)ip);
if (ji == NULL) {
return res;
}
- len = mono_array_length (ta) >> 1;
+ len = mono_array_length (ta) / TRACE_IP_ENTRY_SIZE;
res = mono_array_new_checked (domain, mono_defaults.stack_frame_class, len > skip ? len - skip : 0, &error);
if (mono_error_set_pending_exception (&error))
mono_error_set_pending_exception (&error);
return NULL;
}
- gpointer ip = mono_array_get (ta, gpointer, i * 2 + 0);
- gpointer generic_info = mono_array_get (ta, gpointer, i * 2 + 1);
+ ExceptionTraceIp trace_ip;
+ memcpy (&trace_ip, mono_array_addr_fast (ta, ExceptionTraceIp, i), sizeof (ExceptionTraceIp));
+ gpointer ip = trace_ip.ip;
+ gpointer generic_info = trace_ip.generic_info;
MonoMethod *method;
ji = mono_jit_info_table_find (domain, (char *)ip);
sf->method = NULL;
s = mono_method_get_name_full (method, TRUE, FALSE, MONO_TYPE_NAME_FORMAT_REFLECTION);
- MONO_OBJECT_SETREF (sf, internal_method_name, mono_string_new (domain, s));
+ MonoString *name = mono_string_new_checked (domain, s, &error);
g_free (s);
+ if (!is_ok (&error)) {
+ mono_error_set_pending_exception (&error);
+ return NULL;
+ }
+ MONO_OBJECT_SETREF (sf, internal_method_name, name);
}
else {
MonoReflectionMethod *rm = mono_method_get_object_checked (domain, method, NULL, &error);
if (need_file_info) {
if (location && location->source_file) {
- MONO_OBJECT_SETREF (sf, filename, mono_string_new (domain, location->source_file));
+ MonoString *filename = mono_string_new_checked (domain, location->source_file, &error);
+ if (!is_ok (&error)) {
+ mono_error_set_pending_exception (&error);
+ return NULL;
+ }
+ MONO_OBJECT_SETREF (sf, filename, filename);
sf->line = location->row;
sf->column = location->column;
} else {
mgreg_t *new_reg_locations [MONO_MAX_IREGS];
gboolean get_reg_locations = unwind_options & MONO_UNWIND_REG_LOCATIONS;
gboolean async = mono_thread_info_is_async_context ();
+ Unwinder unwinder;
if (mono_llvm_only) {
GSList *l, *ips;
memcpy (&ctx, start_ctx, sizeof (MonoContext));
memset (reg_locations, 0, sizeof (reg_locations));
+ unwinder_init (&unwinder);
+
while (MONO_CONTEXT_GET_SP (&ctx) < jit_tls->end_of_stack) {
frame.lmf = lmf;
- res = mono_find_jit_info_ext (domain, jit_tls, NULL, &ctx, &new_ctx, NULL, &lmf, get_reg_locations ? new_reg_locations : NULL, &frame);
+ res = unwinder_unwind_frame (&unwinder, domain, jit_tls, NULL, &ctx, &new_ctx, NULL, &lmf, get_reg_locations ? new_reg_locations : NULL, &frame);
if (!res)
return;
if (need_file_info) {
if (location) {
- mono_gc_wbarrier_generic_store (file, (MonoObject*) mono_string_new (domain, location->source_file));
+ MonoString *filename = mono_string_new_checked (domain, location->source_file, &error);
+ if (!is_ok (&error)) {
+ mono_error_set_pending_exception (&error);
+ return FALSE;
+ }
+ mono_gc_wbarrier_generic_store (file, (MonoObject*)filename);
*line = location->row;
*column = location->column;
} else {
mono_ex = (MonoException*)obj;
MonoArray *initial_trace_ips = mono_ex->trace_ips;
if (initial_trace_ips) {
- int len = mono_array_length (initial_trace_ips) >> 1;
+ int len = mono_array_length (initial_trace_ips) / TRACE_IP_ENTRY_SIZE;
for (i = 0; i < (len - 1); i++) {
- gpointer ip = mono_array_get (initial_trace_ips, gpointer, i * 2 + 0);
- gpointer generic_info = mono_array_get (initial_trace_ips, gpointer, i * 2 + 1);
- trace_ips = g_list_prepend (trace_ips, ip);
- trace_ips = g_list_prepend (trace_ips, generic_info);
+ for (int j = 0; j < TRACE_IP_ENTRY_SIZE; ++j) {
+ gpointer p = mono_array_get (initial_trace_ips, gpointer, (i * TRACE_IP_ENTRY_SIZE) + j);
+ trace_ips = g_list_prepend (trace_ips, p);
+ }
}
}
gpointer ip;
if (in_interp)
- ip = (guint16*)ji->code_start + frame.native_offset;
+ ip = (guint8*)ji->code_start + frame.native_offset;
else
ip = MONO_CONTEXT_GET_IP (ctx);
g_assert (ctx != NULL);
if (!obj) {
MonoException *ex = mono_get_exception_null_reference ();
- MONO_OBJECT_SETREF (ex, message, mono_string_new (domain, "Object reference not set to an instance of an object"));
+ MonoString *msg = mono_string_new_checked (domain, "Object reference not set to an instance of an object", &error);
+ mono_error_assert_ok (&error);
+ MONO_OBJECT_SETREF (ex, message, msg);
obj = (MonoObject *)ex;
}
char *from_name = mono_type_get_full_name (jit_tls->class_cast_from);
char *to_name = mono_type_get_full_name (jit_tls->class_cast_to);
char *msg = g_strdup_printf ("Unable to cast object of type '%s' to type '%s'.", from_name, to_name);
- mono_ex->message = mono_string_new (domain, msg);
+ mono_ex->message = mono_string_new_checked (domain, msg, &error);
g_free (from_name);
g_free (to_name);
+ if (!is_ok (&error)) {
+ mono_runtime_printf_err ("Error creating class cast exception message '%s'\n", msg);
+ mono_error_assert_ok (&error);
+ }
g_free (msg);
}
if (!strcmp (mono_ex->object.vtable->klass->name, "ArrayTypeMismatchException")) {
char *from_name = mono_type_get_full_name (jit_tls->class_cast_from);
char *to_name = mono_type_get_full_name (jit_tls->class_cast_to);
char *msg = g_strdup_printf ("Source array of type '%s' cannot be cast to destination array type '%s'.", from_name, to_name);
- mono_ex->message = mono_string_new (domain, msg);
+ mono_ex->message = mono_string_new_checked (domain, msg, &error);
g_free (from_name);
g_free (to_name);
+ if (!is_ok (&error)) {
+ mono_runtime_printf_err ("Error creating array type mismatch exception message '%s'\n", msg);
+ mono_error_assert_ok (&error);
+ }
g_free (msg);
}
}
mono_print_thread_dump_from_ctx (ctx);
}
jit_tls->orig_ex_ctx_set = TRUE;
- mono_profiler_exception_thrown (obj);
+ MONO_PROFILER_RAISE (exception_throw, (obj));
jit_tls->orig_ex_ctx_set = FALSE;
res = mono_handle_exception_internal_first_pass (&ctx_cp, obj, &first_filter_idx, &ji, &prev_ji, non_exception);
}
if (in_interp)
- ip = (guint16*)ji->code_start + frame.native_offset;
+ ip = (guint8*)ji->code_start + frame.native_offset;
else
ip = MONO_CONTEXT_GET_IP (ctx);
* that was called by the EH machinery. It won't have a guard trampoline installed, so we must
* check for this situation here and resume interruption if we are below the guarded block.
*/
- if (G_UNLIKELY (jit_tls->handler_block_return_address)) {
+ if (G_UNLIKELY (jit_tls->handler_block)) {
gboolean is_outside = FALSE;
gpointer prot_bp = MONO_CONTEXT_GET_BP (&jit_tls->handler_block_context);
gpointer catch_bp = MONO_CONTEXT_GET_BP (ctx);
//FIXME make this stack direction aware
+
if (catch_bp > prot_bp) {
is_outside = TRUE;
} else if (catch_bp == prot_bp) {
}
}
if (is_outside) {
- jit_tls->handler_block_return_address = NULL;
jit_tls->handler_block = NULL;
mono_thread_resume_interruption (TRUE); /*We ignore the exception here, it will be raised later*/
}
if (mono_trace_is_enabled () && mono_trace_eval (method))
g_print ("EXCEPTION: catch found at clause %d of %s\n", i, mono_method_full_name (method, TRUE));
jit_tls->orig_ex_ctx_set = TRUE;
- mono_profiler_exception_clause_handler (method, ei->flags, i);
+ MONO_PROFILER_RAISE (exception_clause, (method, i, ei->flags, ex_obj));
jit_tls->orig_ex_ctx_set = FALSE;
mini_set_abort_threshold (ctx);
* like the call which transitioned to JITted code has succeeded, but the
* return value register etc. is not set, so we have to be careful.
*/
- mono_interp_set_resume_state (mono_ex, &frame, ei->handler_start);
+ mono_interp_set_resume_state (jit_tls, mono_ex, frame.interp_frame, ei->handler_start);
/* Undo the IP adjustment done by mono_arch_unwind_frame () */
-#ifdef TARGET_AMD64
+#if defined(TARGET_AMD64)
ctx->gregs [AMD64_RIP] ++;
+#elif defined(TARGET_ARM)
+ ctx->pc ++;
+ if (mono_arm_thumb_supported ())
+ ctx->pc |= 1;
+#elif defined(TARGET_ARM64)
+ ctx->pc ++;
#else
NOT_IMPLEMENTED;
#endif
if (mono_trace_is_enabled () && mono_trace_eval (method))
g_print ("EXCEPTION: fault clause %d of %s\n", i, mono_method_full_name (method, TRUE));
jit_tls->orig_ex_ctx_set = TRUE;
- mono_profiler_exception_clause_handler (method, ei->flags, i);
+ MONO_PROFILER_RAISE (exception_clause, (method, i, ei->flags, ex_obj));
jit_tls->orig_ex_ctx_set = FALSE;
- mini_set_abort_threshold (ctx);
- call_filter (ctx, ei->handler_start);
}
if (ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY) {
if (mono_trace_is_enabled () && mono_trace_eval (method))
g_print ("EXCEPTION: finally clause %d of %s\n", i, mono_method_full_name (method, TRUE));
jit_tls->orig_ex_ctx_set = TRUE;
- mono_profiler_exception_clause_handler (method, ei->flags, i);
+ MONO_PROFILER_RAISE (exception_clause, (method, i, ei->flags, ex_obj));
jit_tls->orig_ex_ctx_set = FALSE;
#ifndef DISABLE_PERFCOUNTERS
mono_perfcounters->exceptions_finallys++;
#endif
+ }
+ if (ei->flags == MONO_EXCEPTION_CLAUSE_FAULT || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY) {
mono_set_lmf (lmf);
if (ji->from_llvm) {
/*
}
}
- jit_tls->orig_ex_ctx_set = TRUE;
- mono_profiler_exception_method_leave (method);
- jit_tls->orig_ex_ctx_set = FALSE;
+ if (MONO_PROFILER_ENABLED (method_exception_leave) &&
+ mono_profiler_get_call_instrumentation_flags (method) & MONO_PROFILER_CALL_INSTRUMENTATION_EXCEPTION_LEAVE) {
+ jit_tls->orig_ex_ctx_set = TRUE;
+ MONO_PROFILER_RAISE (method_exception_leave, (method, ex_obj));
+ jit_tls->orig_ex_ctx_set = FALSE;
+ }
*ctx = new_ctx;
}
* mono_handle_exception:
* \param ctx saved processor state
* \param obj the exception object
+ *
+ * Handle the exception OBJ starting from the state CTX. Modify CTX to point to the handler clause if the exception is caught, and
+ * return TRUE.
*/
gboolean
mono_handle_exception (MonoContext *ctx, MonoObject *obj)
#endif
}
-static gboolean handling_sigsegv = FALSE;
+static gboolean handle_crash_loop = FALSE;
/*
* mono_handle_native_crash:
#endif
MonoJitTlsData *jit_tls = (MonoJitTlsData *)mono_tls_get_jit_tls ();
- gboolean is_sigsegv = !strcmp ("SIGSEGV", signal);
-
- if (handling_sigsegv && is_sigsegv)
+ if (handle_crash_loop)
return;
if (mini_get_debug_options ()->suspend_on_native_crash) {
#endif
}
- /* To prevent infinite loops when the stack walk causes a crash */
- if (is_sigsegv)
- handling_sigsegv = TRUE;
+ /* prevent infinite loops in crash handling */
+ handle_crash_loop = TRUE;
/* !jit_tls means the thread was not registered with the runtime */
if (jit_tls && mono_thread_internal_current ()) {
mono_restore_context (&new_ctx);
}
-#ifdef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD
-
typedef struct {
MonoJitInfo *ji;
MonoContext ctx;
continue;
/*If ip points to the first instruction it means the handler block didn't start
so we can leave its execution to the EH machinery*/
- if (ei->handler_start < ip && ip < ei->data.handler_end) {
+ if (ei->handler_start <= ip && ip < ei->data.handler_end) {
pdata->ji = ji;
pdata->ei = ei;
pdata->ctx = *ctx;
}
-static gpointer
+static void
install_handler_block_guard (MonoJitInfo *ji, MonoContext *ctx)
{
int i;
MonoJitExceptionInfo *clause = NULL;
gpointer ip;
+ guint8 *bp;
ip = MONO_CONTEXT_GET_IP (ctx);
clause = &ji->clauses [i];
if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY)
continue;
- if (clause->handler_start < ip && clause->data.handler_end > ip)
+ if (clause->handler_start <= ip && clause->data.handler_end > ip)
break;
}
/*no matching finally */
if (i == ji->num_clauses)
- return NULL;
-
- /*If we stopped on the instruction right before the try, we haven't actually started executing it*/
- if (ip == clause->handler_start)
- return NULL;
+ return;
- return mono_arch_install_handler_block_guard (ji, clause, ctx, mono_create_handler_block_trampoline ());
+ /*Load the spvar*/
+ bp = (guint8*)MONO_CONTEXT_GET_BP (ctx);
+ *(bp + clause->exvar_offset) = 1;
}
/*
* Finds the bottom handler block running and install a block guard if needed.
*/
-gboolean
+static gboolean
mono_install_handler_block_guard (MonoThreadUnwindState *ctx)
{
FindHandlerBlockData data = { 0 };
MonoJitTlsData *jit_tls = (MonoJitTlsData *)ctx->unwind_data [MONO_UNWIND_DATA_JIT_TLS];
- gpointer resume_ip;
-
-#ifndef MONO_ARCH_HAVE_HANDLER_BLOCK_GUARD_AOT
- if (mono_aot_only)
- return FALSE;
-#endif
/* Guard against a null MonoJitTlsData. This can happens if the thread receives the
* interrupt signal before the JIT has time to initialize its TLS data for the given thread.
*/
- if (!jit_tls || jit_tls->handler_block_return_address)
+ if (!jit_tls || jit_tls->handler_block)
return FALSE;
/* Do an async safe stack walk */
memcpy (&jit_tls->handler_block_context, &data.ctx, sizeof (MonoContext));
- resume_ip = install_handler_block_guard (data.ji, &data.ctx);
- if (resume_ip == NULL)
- return FALSE;
+ install_handler_block_guard (data.ji, &data.ctx);
- jit_tls->handler_block_return_address = resume_ip;
jit_tls->handler_block = data.ei;
return TRUE;
mono_current_thread_has_handle_block_guard (void)
{
MonoJitTlsData *jit_tls = (MonoJitTlsData *)mono_tls_get_jit_tls ();
- return jit_tls && jit_tls->handler_block_return_address != NULL;
-}
-
-#else
-gboolean
-mono_install_handler_block_guard (MonoThreadUnwindState *ctx)
-{
- return FALSE;
+ return jit_tls && jit_tls->handler_block != NULL;
}
-static gboolean
-mono_current_thread_has_handle_block_guard (void)
-{
- return FALSE;
-}
-
-#endif
-
void
mono_set_cast_details (MonoClass *from, MonoClass *to)
{
size_t upper = mono_array_length (mono_ex->trace_ips);
- for (int i = 0; i < upper; i+= 2) {
+ for (int i = 0; i < upper; i += TRACE_IP_ENTRY_SIZE) {
gpointer curr_ip = mono_array_get (mono_ex->trace_ips, gpointer, i);
- gpointer curr_info = mono_array_get (mono_ex->trace_ips, gpointer, i + 1);
- trace_ips = g_list_append (trace_ips, curr_ip);
- trace_ips = g_list_append (trace_ips, curr_info);
-
+ for (int j = 0; j < TRACE_IP_ENTRY_SIZE; ++j) {
+ gpointer p = mono_array_get (mono_ex->trace_ips, gpointer, i + j);
+ trace_ips = g_list_append (trace_ips, p);
+ }
if (ip == curr_ip)
break;
}
g_assert_not_reached ();
}
#endif
-
-#ifndef ENABLE_INTERPRETER
-/* Stubs of interpreter functions */
-void
-mono_interp_set_resume_state (MonoException *ex, StackFrameInfo *frame, gpointer handler_ip)
-{
- g_assert_not_reached ();
-}
-
-void
-mono_interp_run_finally (StackFrameInfo *frame, int clause_index, gpointer handler_ip)
-{
- g_assert_not_reached ();
-}
-
-void
-mono_interp_frame_iter_init (MonoInterpStackIter *iter, gpointer interp_exit_data)
-{
- g_assert_not_reached ();
-}
-
-gboolean
-mono_interp_frame_iter_next (MonoInterpStackIter *iter, StackFrameInfo *frame)
-{
- g_assert_not_reached ();
- return FALSE;
-}
-#endif