#include "mini.h"
#include "debug-mini.h"
#include "trace.h"
+#include "debugger-agent.h"
#ifndef MONO_ARCH_CONTEXT_DEF
#define MONO_ARCH_CONTEXT_DEF
return throw_corlib_exception_func;
}
+#ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
+
+/*
+ * find_jit_info_no_ext:
+ *
+ * If the target has the find_jit_info_ext version of this function, define the old
+ * version here which translates between the old and new APIs.
+ */
+static MonoJitInfo *
+find_jit_info_no_ext (MonoDomain *domain, MonoJitTlsData *jit_tls, MonoJitInfo *res, MonoJitInfo *prev_ji, MonoContext *ctx,
+ MonoContext *new_ctx, MonoLMF **lmf, gboolean *managed)
+{
+ StackFrameInfo frame;
+ MonoJitInfo *ji;
+ gboolean err;
+ gpointer ip = MONO_CONTEXT_GET_IP (ctx);
+
+ /* Avoid costly table lookup during stack overflow */
+ if (prev_ji && (ip > prev_ji->code_start && ((guint8*)ip < ((guint8*)prev_ji->code_start) + prev_ji->code_size)))
+ ji = prev_ji;
+ else
+ ji = mini_jit_info_table_find (domain, ip, NULL);
+
+ if (managed)
+ *managed = FALSE;
+
+ err = mono_arch_find_jit_info_ext (domain, jit_tls, ji, ctx, new_ctx, lmf, &frame);
+ if (!err)
+ return (gpointer)-1;
+
+ /* Convert between the new and the old APIs */
+ switch (frame.type) {
+ case FRAME_TYPE_MANAGED:
+ if (managed)
+ *managed = TRUE;
+ return ji;
+ case FRAME_TYPE_MANAGED_TO_NATIVE:
+ if (frame.ji)
+ return frame.ji;
+ else {
+ memset (res, 0, sizeof (MonoJitInfo));
+ res->method = frame.method;
+ return res;
+ }
+ case FRAME_TYPE_DEBUGGER_INVOKE: {
+ MonoContext tmp_ctx;
+
+ /*
+ * The normal exception handling code can't handle this frame, so just
+ * skip it.
+ */
+ ji = find_jit_info_no_ext (domain, jit_tls, res, NULL, new_ctx, &tmp_ctx, lmf, managed);
+ memcpy (new_ctx, &tmp_ctx, sizeof (MonoContext));
+ return ji;
+ }
+ default:
+ g_assert_not_reached ();
+ return NULL;
+ }
+}
+
+#endif
+
/* mono_find_jit_info:
*
* This function is used to gather information from @ctx. It return the
if (managed)
*managed = FALSE;
+#ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
+ ji = find_jit_info_no_ext (domain, jit_tls, res, prev_ji, ctx, new_ctx, lmf, &managed2);
+#else
ji = mono_arch_find_jit_info (domain, jit_tls, res, prev_ji, ctx, new_ctx, lmf, &managed2);
+#endif
if (ji == (gpointer)-1)
return ji;
- if (managed2 || ji->method->wrapper_type) {
+ if (managed2 || (ji && ji->method->wrapper_type)) {
const char *real_ip, *start;
gint32 offset;
return ji;
}
+#ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
+
+/*
+ * mono_find_jit_info_ext:
+ *
+ * A version of mono_find_jit_info which returns all data in the StackFrameInfo
+ * structure.
+ */
+gboolean
+mono_find_jit_info_ext (MonoDomain *domain, MonoJitTlsData *jit_tls,
+ MonoJitInfo *prev_ji, MonoContext *ctx,
+ MonoContext *new_ctx, char **trace, MonoLMF **lmf,
+ StackFrameInfo *frame)
+{
+ gboolean err;
+ gpointer ip = MONO_CONTEXT_GET_IP (ctx);
+ MonoJitInfo *ji;
+ MonoDomain *target_domain;
+
+ if (trace)
+ *trace = NULL;
+
+ /* Avoid costly table lookup during stack overflow */
+ if (prev_ji && (ip > prev_ji->code_start && ((guint8*)ip < ((guint8*)prev_ji->code_start) + prev_ji->code_size)))
+ ji = prev_ji;
+ else
+ ji = mini_jit_info_table_find (domain, ip, &target_domain);
+
+ if (!target_domain)
+ target_domain = domain;
+
+ err = mono_arch_find_jit_info_ext (target_domain, jit_tls, ji, ctx, new_ctx, lmf, frame);
+ if (!err)
+ return FALSE;
+
+ frame->native_offset = -1;
+ frame->domain = target_domain;
+
+ ji = frame->ji;
+
+ if (ji && (frame->managed || ji->method->wrapper_type)) {
+ const char *real_ip, *start;
+
+ start = (const char *)ji->code_start;
+ if (!frame->managed)
+ /* ctx->ip points into native code */
+ real_ip = (const char*)MONO_CONTEXT_GET_IP (new_ctx);
+ else
+ real_ip = (const char*)ip;
+
+ if ((real_ip >= start) && (real_ip <= start + ji->code_size))
+ frame->native_offset = real_ip - start;
+ else
+ frame->native_offset = -1;
+
+ if (trace)
+ *trace = mono_debug_print_stack_frame (ji->method, frame->native_offset, domain);
+ } else {
+ if (trace && frame->method) {
+ char *fname = mono_method_full_name (frame->method, TRUE);
+ *trace = g_strdup_printf ("in (unmanaged) %s", fname);
+ g_free (fname);
+ }
+ }
+
+ return TRUE;
+}
+
+#endif /* MONO_ARCH_HAVE_FIND_JIT_INFO_EXT */
+
static gpointer
get_generic_info_from_stack_frame (MonoJitInfo *ji, MonoContext *ctx)
{
mono_jit_walk_stack_from_ctx (func, NULL, do_il_offset, user_data);
}
+void
+mono_jit_walk_stack_from_ctx_in_thread (MonoJitStackWalk func, MonoDomain *domain, MonoContext *start_ctx, gboolean do_il_offset, MonoInternalThread *thread, MonoLMF *lmf, gpointer user_data)
+{
+ MonoJitTlsData *jit_tls = thread->jit_data;
+ gint il_offset;
+ MonoContext ctx, new_ctx;
+ StackFrameInfo frame;
+#ifndef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
+ gint native_offset;
+ gboolean managed;
+ MonoJitInfo *ji, rji;
+#else
+ gboolean res;
+#endif
+
+ MONO_ARCH_CONTEXT_DEF
+
+ mono_arch_flush_register_windows ();
+
+ if (start_ctx) {
+ memcpy (&ctx, start_ctx, sizeof (MonoContext));
+ } else {
+#ifdef MONO_INIT_CONTEXT_FROM_CURRENT
+ MONO_INIT_CONTEXT_FROM_CURRENT (&ctx);
+#else
+ MONO_INIT_CONTEXT_FROM_FUNC (&ctx, mono_jit_walk_stack_from_ctx);
+#endif
+ g_assert (thread == mono_thread_internal_current ());
+ }
+
+ while (MONO_CONTEXT_GET_SP (&ctx) < jit_tls->end_of_stack) {
+ frame.lmf = lmf;
+#ifdef MONO_ARCH_HAVE_FIND_JIT_INFO_EXT
+ res = mono_find_jit_info_ext (domain, jit_tls, NULL, &ctx, &new_ctx, NULL, &lmf, &frame);
+ if (!res)
+ return;
+#else
+ ji = mono_find_jit_info (domain, jit_tls, &rji, NULL, &ctx, &new_ctx, NULL, &lmf, &native_offset, &managed);
+ g_assert (ji);
+ frame.type = FRAME_TYPE_MANAGED;
+ frame.ji = ji;
+ frame.managed = managed;
+ frame.native_offset = native_offset;
+
+ if (ji == (gpointer)-1)
+ return;
+#endif
+
+ if (do_il_offset && frame.ji) {
+ MonoDebugSourceLocation *source;
+
+ source = mono_debug_lookup_source_location (frame.ji->method, frame.native_offset, domain);
+ il_offset = source ? source->il_offset : -1;
+ mono_debug_free_source_location (source);
+ } else
+ il_offset = -1;
+
+ frame.il_offset = il_offset;
+
+ if (func (&frame, &ctx, user_data))
+ return;
+
+ ctx = new_ctx;
+ }
+}
+
+
MonoBoolean
ves_icall_get_frame_info (gint32 skip, MonoBoolean need_file_info,
MonoReflectionMethod **method,
actual_method = get_method_from_stack_frame (ji, get_generic_info_from_stack_frame (ji, &ji_ctx));
- *method = mono_method_get_object (domain, actual_method, NULL);
+ mono_gc_wbarrier_generic_store (method, (MonoObject*) mono_method_get_object (domain, actual_method, NULL));
location = mono_debug_lookup_source_location (ji->method, *native_offset, domain);
if (location)
if (need_file_info) {
if (location) {
- *file = mono_string_new (domain, location->source_file);
+ mono_gc_wbarrier_generic_store (file, (MonoObject*) mono_string_new (domain, location->source_file));
*line = location->row;
*column = location->column;
} else {
return catch_class;
}
+/*
+ * mini_jit_info_table_find:
+ *
+ * Same as mono_jit_info_table_find, but search all the domains of the current thread
+ * if ADDR is not found in DOMAIN. The domain where the method was found is stored into
+ * OUT_DOMAIN if it is not NULL.
+ */
+MonoJitInfo*
+mini_jit_info_table_find (MonoDomain *domain, char *addr, MonoDomain **out_domain)
+{
+ MonoJitInfo *ji;
+ MonoInternalThread *t = mono_thread_internal_current ();
+ GSList *l;
+
+ if (out_domain)
+ *out_domain = NULL;
+
+ ji = mono_jit_info_table_find (domain, addr);
+ if (ji) {
+ if (out_domain)
+ *out_domain = domain;
+ return ji;
+ }
+
+ for (l = t->appdomain_refs; l; l = l->next) {
+ if (l->data != domain) {
+ ji = mono_jit_info_table_find ((MonoDomain*)l->data, addr);
+ if (ji) {
+ if (out_domain)
+ *out_domain = (MonoDomain*)l->data;
+ return ji;
+ }
+ }
+ }
+
+ return NULL;
+}
+
/**
* mono_handle_exception_internal:
* @ctx: saved processor state
* @test_only: only test if the exception is caught, but dont call handlers
* @out_filter_idx: out parameter. if test_only is true, set to the index of
* the first filter clause which caught the exception.
+ * @resume: whenever to resume unwinding based on the state in MonoJitTlsData.
*/
static gboolean
-mono_handle_exception_internal (MonoContext *ctx, gpointer obj, gpointer original_ip, gboolean test_only, gint32 *out_filter_idx, MonoJitInfo **out_ji)
+mono_handle_exception_internal (MonoContext *ctx, gpointer obj, gpointer original_ip, gboolean test_only, gboolean resume, gint32 *out_filter_idx, MonoJitInfo **out_ji)
{
MonoDomain *domain = mono_domain_get ();
MonoJitInfo *ji, rji;
obj = (MonoObject *)ex;
}
+ if (!test_only)
+ mono_debugger_agent_handle_exception (obj, ctx);
+
/*
* Allocate a new exception object instead of the preconstructed ones.
*/
if (mono_trace_is_enabled ())
g_print ("[%p:] EXCEPTION handling: %s\n", (void*)GetCurrentThreadId (), mono_object_class (obj)->name);
mono_profiler_exception_thrown (obj);
- if (!mono_handle_exception_internal (&ctx_cp, obj, original_ip, TRUE, &first_filter_idx, out_ji)) {
+ if (!mono_handle_exception_internal (&ctx_cp, obj, original_ip, TRUE, FALSE, &first_filter_idx, out_ji)) {
if (mono_break_on_exc)
G_BREAKPOINT ();
// FIXME: This runs managed code so it might cause another stack overflow when
// we are handling a stack overflow
+ mono_debugger_agent_handle_unhandled_exception (obj, ctx);
mono_unhandled_exception (obj);
}
}
MonoClass *catch_class = get_exception_catch_class (ei, ji, ctx);
if ((ei->flags == MONO_EXCEPTION_CLAUSE_NONE) || (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)) {
- /* store the exception object in bp + ei->exvar_offset */
- *((gpointer *)(gpointer)((char *)MONO_CONTEXT_GET_BP (ctx) + ei->exvar_offset)) = obj;
+ if (ji->from_llvm) {
+#ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
+ MONO_CONTEXT_SET_LLVM_EXC_REG (ctx, obj);
+#else
+ g_assert_not_reached ();
+#endif
+ } else {
+ /* store the exception object in bp + ei->exvar_offset */
+ *((gpointer *)(gpointer)((char *)MONO_CONTEXT_GET_BP (ctx) + ei->exvar_offset)) = obj;
+ }
}
if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
mono_profiler_exception_clause_handler (ji->method, ei->flags, i);
mono_debugger_call_exception_handler (ei->handler_start, MONO_CONTEXT_GET_SP (ctx), obj);
mono_perfcounters->exceptions_finallys++;
- call_filter (ctx, ei->handler_start);
+ *(mono_get_lmf_addr ()) = lmf;
+ if (ji->from_llvm) {
+ /*
+ * LLVM compiled finally handlers follow the design
+ * of the c++ ehabi, i.e. they call a resume function
+ * at the end instead of returning to the caller.
+ * So save the exception handling state,
+ * mono_resume_unwind () will call us again to continue
+ * the unwinding.
+ */
+ MONO_CONTEXT_SET_IP (ctx, ei->handler_start);
+ *(mono_get_lmf_addr ()) = lmf;
+ jit_tls->ex_ctx = new_ctx;
+ jit_tls->ex_obj = obj;
+ return 0;
+ } else {
+ call_filter (ctx, ei->handler_start);
+ }
}
}
* The debugger wants us to stop only if this exception is user-unhandled.
*/
- ret = mono_handle_exception_internal (&ctx_cp, obj, MONO_CONTEXT_GET_IP (ctx), TRUE, NULL, &ji);
+ ret = mono_handle_exception_internal (&ctx_cp, obj, MONO_CONTEXT_GET_IP (ctx), TRUE, FALSE, NULL, &ji);
if (ret && (ji != NULL) && (ji->method->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE)) {
/*
* The exception is handled in a runtime-invoke wrapper, that means that it's unhandled
{
if (!test_only)
mono_perfcounters->exceptions_thrown++;
- return mono_handle_exception_internal (ctx, obj, original_ip, test_only, NULL, NULL);
+
+ return mono_handle_exception_internal (ctx, obj, original_ip, test_only, FALSE, NULL, NULL);
}
#ifdef MONO_ARCH_SIGSEGV_ON_ALTSTACK
/* Try to get more meaningful information using gdb */
-#if !defined(PLATFORM_WIN32) && defined(HAVE_SYS_SYSCALL_H) && defined(SYS_fork)
+#if !defined(HOST_WIN32) && defined(HAVE_SYS_SYSCALL_H) && defined(SYS_fork)
if (!mini_get_debug_options ()->no_gdb_backtrace && !mono_debug_using_mono_debugger ()) {
/* From g_spawn_command_line_sync () in eglib */
int res;
int stdout_pipe [2] = { -1, -1 };
pid_t pid;
- const char *argv [16];
- char buf1 [128];
int status;
char buffer [1024];
* glibc fork acquires some locks, so if the crash happened inside malloc/free,
* it will deadlock. Call the syscall directly instead.
*/
- pid = syscall (SYS_fork);
+ pid = mono_runtime_syscall_fork ();
+
if (pid == 0) {
close (stdout_pipe [0]);
dup2 (stdout_pipe [1], STDOUT_FILENO);
for (i = getdtablesize () - 1; i >= 3; i--)
close (i);
- argv [0] = g_find_program_in_path ("gdb");
- if (argv [0] == NULL) {
+ if (!mono_gdb_render_native_backtraces ())
close (STDOUT_FILENO);
- exit (1);
- }
- argv [1] = "-ex";
- sprintf (buf1, "attach %ld", (long)getpid ());
- argv [2] = buf1;
- argv [3] = "--ex";
- argv [4] = "info threads";
- argv [5] = "--ex";
- argv [6] = "thread apply all bt";
- argv [7] = "--batch";
- argv [8] = 0;
-
- execv (argv [0], (char**)argv);
exit (1);
}
abort ();
}
-/*
- * mono_print_thread_dump:
- *
- * Print information about the current thread to stdout.
- * SIGCTX can be NULL, allowing this to be called from gdb.
- */
-void
-mono_print_thread_dump (void *sigctx)
+static void
+mono_print_thread_dump_internal (void *sigctx, MonoContext *start_ctx)
{
- MonoThread *thread = mono_thread_current ();
+ MonoInternalThread *thread = mono_thread_internal_current ();
#if defined(__i386__) || defined(__x86_64__)
MonoContext ctx;
#endif
else
g_string_append (text, "\n\"<unnamed thread>\"");
-#ifndef PLATFORM_WIN32
+#ifndef HOST_WIN32
wapi_desc = wapi_current_thread_desc ();
g_string_append_printf (text, " tid=0x%p this=0x%p %s\n", (gpointer)(gsize)thread->tid, thread, wapi_desc);
free (wapi_desc);
#endif
#ifdef MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX
- if (!sigctx)
+ if (start_ctx) {
+ memcpy (&ctx, start_ctx, sizeof (MonoContext));
+ } else if (!sigctx)
MONO_INIT_CONTEXT_FROM_FUNC (&ctx, mono_print_thread_dump);
else
mono_arch_sigctx_to_monoctx (sigctx, &ctx);
printf ("\t<Stack traces in thread dumps not supported on this platform>\n");
#endif
- fprintf (stdout, text->str);
+ fprintf (stdout, "%s", text->str);
g_string_free (text, TRUE);
fflush (stdout);
}
+
+/*
+ * mono_print_thread_dump:
+ *
+ * Print information about the current thread to stdout.
+ * SIGCTX can be NULL, allowing this to be called from gdb.
+ */
+void
+mono_print_thread_dump (void *sigctx)
+{
+ mono_print_thread_dump_internal (sigctx, NULL);
+}
+
+void
+mono_print_thread_dump_from_ctx (MonoContext *ctx)
+{
+ mono_print_thread_dump_internal (NULL, ctx);
+}
+
+/*
+ * mono_resume_unwind:
+ *
+ * This is called by code at the end of LLVM compiled finally clauses to continue
+ * unwinding.
+ */
+void
+mono_resume_unwind (void)
+{
+ MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
+ static void (*restore_context) (MonoContext *);
+ MonoContext ctx;
+
+ memcpy (&ctx, &jit_tls->ex_ctx, sizeof (MonoContext));
+
+ mono_handle_exception_internal (&ctx, jit_tls->ex_obj, NULL, FALSE, TRUE, NULL, NULL);
+
+ if (!restore_context)
+ restore_context = mono_get_restore_context ();
+
+ restore_context (&ctx);
+}
projects / mono.git / blobdiff