#include <signal.h>
#include <string.h>
+#ifdef HAVE_EXECINFO_H
+#include <execinfo.h>
+#endif
+
#include <mono/metadata/appdomain.h>
#include <mono/metadata/tabledefs.h>
#include <mono/metadata/threads.h>
#include <mono/metadata/exception.h>
#include <mono/metadata/gc-internal.h>
#include <mono/metadata/mono-debug.h>
+#include <mono/metadata/mono-debug-debugger.h>
#include "mini.h"
+#ifdef MONO_ARCH_SIGSEGV_ON_ALTSTACK
+#include <unistd.h>
+#include <sys/mman.h>
+#endif
+
#define IS_ON_SIGALTSTACK(jit_tls) ((jit_tls) && ((guint8*)&(jit_tls) > (guint8*)(jit_tls)->signal_stack) && ((guint8*)&(jit_tls) < ((guint8*)(jit_tls)->signal_stack + (jit_tls)->signal_stack_size)))
+#ifndef MONO_ARCH_CONTEXT_DEF
+#define MONO_ARCH_CONTEXT_DEF
+#endif
+
+#ifndef MONO_INIT_CONTEXT_FROM_CALLER
+#define MONO_INIT_CONTEXT_FROM_CALLER(ctx) do { \
+ MONO_CONTEXT_SET_IP ((ctx), __builtin_return_address (0)); \
+ MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (1)); \
+} while (0)
+#endif
+
+#ifndef mono_find_jit_info
+
+/* mono_find_jit_info:
+ *
+ * This function is used to gather information from @ctx. It return the
+ * MonoJitInfo of the corresponding function, unwinds one stack frame and
+ * stores the resulting context into @new_ctx. It also stores a string
+ * describing the stack location into @trace (if not NULL), and modifies
+ * the @lmf if necessary. @native_offset return the IP offset from the
+ * start of the function or -1 if that info is not available.
+ */
+static MonoJitInfo *
+mono_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls, MonoJitInfo *res, MonoJitInfo *prev_ji, MonoContext *ctx,
+ MonoContext *new_ctx, char **trace, MonoLMF **lmf, int *native_offset,
+ gboolean *managed)
+{
+ gboolean managed2;
+ gpointer ip = MONO_CONTEXT_GET_IP (ctx);
+ MonoJitInfo *ji;
+
+ if (trace)
+ *trace = NULL;
+
+ if (native_offset)
+ *native_offset = -1;
+
+ if (managed)
+ *managed = FALSE;
+
+ ji = mono_arch_find_jit_info (domain, jit_tls, res, prev_ji, ctx, new_ctx, NULL, lmf, NULL, &managed2);
+
+ if (ji == (gpointer)-1)
+ return ji;
+
+ if (managed2 || ji->method->wrapper_type) {
+ char *source_location, *tmpaddr, *fname;
+ gint32 offset, iloffset;
+
+ if (!managed2)
+ /* ctx->ip points into native code */
+ offset = (char*)MONO_CONTEXT_GET_IP (new_ctx) - (char*)ji->code_start;
+ else
+ offset = (char *)ip - (char *)ji->code_start;
+
+ if (native_offset)
+ *native_offset = offset;
+
+ if (managed)
+ if (!ji->method->wrapper_type)
+ *managed = TRUE;
+
+ if (trace) {
+ source_location = mono_debug_source_location_from_address (ji->method, offset, NULL, domain);
+ iloffset = mono_debug_il_offset_from_address (ji->method, offset, domain);
+
+ if (iloffset < 0)
+ tmpaddr = g_strdup_printf ("<0x%05x>", offset);
+ else
+ tmpaddr = g_strdup_printf ("[0x%05x]", iloffset);
+
+ fname = mono_method_full_name (ji->method, TRUE);
+
+ if (source_location)
+ *trace = g_strdup_printf ("in %s (at %s) %s", tmpaddr, source_location, fname);
+ else
+ *trace = g_strdup_printf ("in %s %s", tmpaddr, fname);
+
+ g_free (fname);
+ g_free (source_location);
+ g_free (tmpaddr);
+ }
+ }
+ else {
+ if (trace) {
+ char *fname = mono_method_full_name (res->method, TRUE);
+ *trace = g_strdup_printf ("in (unmanaged) %s", fname);
+ g_free (fname);
+ }
+ }
+
+ return ji;
+}
+
+#endif /* mono_find_jit_info */
+
+MonoString *
+ves_icall_System_Exception_get_trace (MonoException *ex)
+{
+ MonoDomain *domain = mono_domain_get ();
+ MonoString *res;
+ MonoArray *ta = ex->trace_ips;
+ int i, len;
+ GString *trace_str;
+ char tmpaddr [256];
+
+ if (ta == NULL)
+ /* Exception is not thrown yet */
+ return NULL;
+
+ len = mono_array_length (ta);
+ trace_str = g_string_new ("");
+ for (i = 0; i < len; i++) {
+ MonoJitInfo *ji;
+ gpointer ip = mono_array_get (ta, gpointer, i);
+
+ ji = mono_jit_info_table_find (domain, ip);
+ if (ji == NULL) {
+ /* Unmanaged frame */
+ g_string_append_printf (trace_str, "in (unmanaged) %p\n", ip);
+ } else {
+ char *source_location, *fname;
+ gint32 address, iloffset;
+
+ address = (char *)ip - (char *)ji->code_start;
+
+ source_location = mono_debug_source_location_from_address (ji->method, address, NULL, ex->object.vtable->domain);
+ iloffset = mono_debug_il_offset_from_address (ji->method, address, ex->object.vtable->domain);
+
+ if (iloffset < 0)
+ sprintf (tmpaddr, "<0x%05x>", address);
+ else
+ sprintf (tmpaddr, "[0x%05x]", iloffset);
+
+ fname = mono_method_full_name (ji->method, TRUE);
+
+ if (source_location)
+ g_string_append_printf (trace_str, "in %s (at %s) %s\n", tmpaddr, source_location, fname);
+ else
+ g_string_append_printf (trace_str, "in %s %s\n", tmpaddr, fname);
+
+ g_free (fname);
+ g_free (source_location);
+ }
+ }
+
+ res = mono_string_new (ex->object.vtable->domain, trace_str->str);
+ g_string_free (trace_str, TRUE);
+
+ return res;
+}
+
MonoArray *
ves_icall_get_trace (MonoException *exc, gint32 skip, MonoBoolean need_file_info)
{
g_assert (ji != NULL);
- sf->method = mono_method_get_object (domain, ji->method, NULL);
+ if (ji->method->wrapper_type) {
+ char *s;
+
+ sf->method = NULL;
+ s = mono_method_full_name (ji->method, TRUE);
+ sf->internal_method_name = mono_string_new (domain, s);
+ g_free (s);
+ }
+ else
+ sf->method = mono_method_get_object (domain, ji->method, NULL);
sf->native_offset = (char *)ip - (char *)ji->code_start;
sf->il_offset = mono_debug_il_offset_from_address (ji->method, sf->native_offset, domain);
return res;
}
+/**
+ * mono_walk_stack:
+ * @domain: starting appdomain
+ * @jit_tls: JIT data for the thread
+ * @start_ctx: starting state of the stack frame
+ * @func: callback to call for each stack frame
+ * @user_data: data passed to the callback
+ *
+ * This function walks the stack of a thread, starting from the state
+ * represented by jit_tls and start_ctx. For each frame the callback
+ * function is called with the relevant info. The walk ends when no more
+ * managed stack frames are found or when the callback returns a TRUE value.
+ * Note that the function can be used to walk the stack of a thread
+ * different from the current.
+ */
+void
+mono_walk_stack (MonoDomain *domain, MonoJitTlsData *jit_tls, MonoContext *start_ctx, MonoStackFrameWalk func, gpointer user_data)
+{
+ MonoLMF *lmf = jit_tls->lmf;
+ MonoJitInfo *ji, rji;
+ gint native_offset;
+ gboolean managed;
+ MonoContext ctx, new_ctx;
+
+ ctx = *start_ctx;
+
+ while (MONO_CONTEXT_GET_BP (&ctx) < jit_tls->end_of_stack) {
+ /*
+ * FIXME: mono_find_jit_info () will need to be able to return a different
+ * MonoDomain when apddomain transitions are found on the stack.
+ */
+ ji = mono_find_jit_info (domain, jit_tls, &rji, NULL, &ctx, &new_ctx, NULL, &lmf, &native_offset, &managed);
+ if (!ji || ji == (gpointer)-1)
+ return;
+
+ if (func (domain, &new_ctx, ji, user_data))
+ return;
+
+ ctx = new_ctx;
+ }
+}
+
+#ifndef CUSTOM_STACK_WALK
+
void
-mono_jit_walk_stack (MonoStackWalk func, gpointer user_data) {
+mono_jit_walk_stack (MonoStackWalk func, gboolean do_il_offset, gpointer user_data) {
MonoDomain *domain = mono_domain_get ();
MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
MonoLMF *lmf = jit_tls->lmf;
MonoJitInfo *ji, rji;
gint native_offset, il_offset;
gboolean managed;
-
MonoContext ctx, new_ctx;
+ MONO_ARCH_CONTEXT_DEF
+
mono_arch_flush_register_windows ();
- MONO_CONTEXT_SET_IP (&ctx, __builtin_return_address (0));
- MONO_CONTEXT_SET_BP (&ctx, __builtin_frame_address (1));
+#ifdef MONO_INIT_CONTEXT_FROM_CURRENT
+ MONO_INIT_CONTEXT_FROM_CURRENT (&ctx);
+#else
+ MONO_INIT_CONTEXT_FROM_CALLER (&ctx);
+#endif
while (MONO_CONTEXT_GET_BP (&ctx) < jit_tls->end_of_stack) {
- ji = mono_arch_find_jit_info (domain, jit_tls, &rji, NULL, &ctx, &new_ctx, NULL, &lmf, &native_offset, &managed);
+ ji = mono_find_jit_info (domain, jit_tls, &rji, NULL, &ctx, &new_ctx, NULL, &lmf, &native_offset, &managed);
g_assert (ji);
if (ji == (gpointer)-1)
return;
- il_offset = mono_debug_il_offset_from_address (ji->method, native_offset, domain);
+ il_offset = do_il_offset ? mono_debug_il_offset_from_address (ji->method, native_offset, domain): -1;
if (func (ji->method, native_offset, il_offset, managed, user_data))
return;
MonoJitInfo *ji, rji;
MonoContext ctx, new_ctx;
+ MONO_ARCH_CONTEXT_DEF;
+
mono_arch_flush_register_windows ();
- MONO_CONTEXT_SET_IP (&ctx, ves_icall_get_frame_info);
- MONO_CONTEXT_SET_BP (&ctx, __builtin_frame_address (0));
+ MONO_INIT_CONTEXT_FROM_FUNC (&ctx, ves_icall_get_frame_info);
skip++;
do {
- ji = mono_arch_find_jit_info (domain, jit_tls, &rji, NULL, &ctx, &new_ctx, NULL, &lmf, native_offset, NULL);
+ ji = mono_find_jit_info (domain, jit_tls, &rji, NULL, &ctx, &new_ctx, NULL, &lmf, native_offset, NULL);
ctx = new_ctx;
/* skip all wrappers ??*/
if (ji->method->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE ||
+ ji->method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE ||
+ ji->method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH ||
ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK ||
ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE)
continue;
return TRUE;
}
+#endif /* CUSTOM_STACK_WALK */
+
+typedef struct {
+ guint32 skips;
+ MonoSecurityFrame *frame;
+} MonoFrameSecurityInfo;
+
+static gboolean
+callback_get_first_frame_security_info (MonoDomain *domain, MonoContext *ctx, MonoJitInfo *ji, gpointer data)
+{
+ MonoFrameSecurityInfo *si = (MonoFrameSecurityInfo*) data;
+
+ /* FIXME: skip all wrappers ?? probably not - case by case testing is required */
+ if (ji->method->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE ||
+ ji->method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE ||
+ ji->method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH ||
+ ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK ||
+ ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE) {
+ return FALSE;
+ }
+
+ if (si->skips > 0) {
+ si->skips--;
+ return FALSE;
+ }
+
+ si->frame = mono_declsec_create_frame (domain, ji);
+
+ /* Stop - we only want the first frame (e.g. LinkDemand and InheritanceDemand) */
+ return TRUE;
+}
+
+/**
+ * ves_icall_System_Security_SecurityFrame_GetSecurityFrame:
+ * @skip: the number of stack frames to skip
+ *
+ * This function returns a the security informations of a single stack frame
+ * (after the skipped ones). This is required for [NonCas]LinkDemand[Choice]
+ * and [NonCas]InheritanceDemand[Choice] as only the caller security is
+ * evaluated.
+ */
+MonoSecurityFrame*
+ves_icall_System_Security_SecurityFrame_GetSecurityFrame (gint32 skip)
+{
+ MonoDomain *domain = mono_domain_get ();
+ MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
+ MonoFrameSecurityInfo si;
+ MonoContext ctx;
+
+ MONO_ARCH_CONTEXT_DEF
+
+ MONO_INIT_CONTEXT_FROM_FUNC (&ctx, ves_icall_System_Security_SecurityFrame_GetSecurityFrame);
+
+ si.skips = skip;
+ si.frame = NULL;
+ mono_walk_stack (domain, jit_tls, &ctx, callback_get_first_frame_security_info, (gpointer)&si);
+
+ return (si.skips == 0) ? si.frame : NULL;
+}
+
+
+typedef struct {
+ guint32 skips;
+ MonoArray *stack;
+ guint32 count;
+ guint32 maximum;
+} MonoSecurityStack;
+
+static void
+grow_array (MonoSecurityStack *stack)
+{
+ MonoDomain *domain = mono_domain_get ();
+ guint32 newsize = (stack->maximum << 1);
+ MonoArray *newstack = mono_array_new (domain, mono_defaults.runtimesecurityframe_class, newsize);
+ int i;
+ for (i=0; i < stack->maximum; i++) {
+ gpointer frame = mono_array_get (stack->stack, gpointer, i);
+ mono_array_set (newstack, gpointer, i, frame);
+ }
+ stack->maximum = newsize;
+ stack->stack = newstack;
+}
+
+static gboolean
+callback_get_stack_frames_security_info (MonoDomain *domain, MonoContext *ctx, MonoJitInfo *ji, gpointer data)
+{
+ MonoSecurityStack *ss = (MonoSecurityStack*) data;
+
+ /* FIXME: skip all wrappers ?? probably not - case by case testing is required */
+ if (ji->method->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE ||
+ ji->method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE ||
+ ji->method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH ||
+ ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK ||
+ ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE) {
+ return FALSE;
+ }
+
+ if (ss->skips > 0) {
+ ss->skips--;
+ return FALSE;
+ }
+
+ if (ss->count == ss->maximum)
+ grow_array (ss);
+
+ mono_array_set (ss->stack, gpointer, ss->count++, mono_declsec_create_frame (domain, ji));
+
+ /* continue down the stack */
+ return FALSE;
+}
+
static MonoArray *
-glist_to_array (GList *list)
+glist_to_array (GList *list, MonoClass *eclass)
{
MonoDomain *domain = mono_domain_get ();
MonoArray *res;
return NULL;
len = g_list_length (list);
- res = mono_array_new (domain, mono_defaults.int_class, len);
+ res = mono_array_new (domain, eclass, len);
for (i = 0; list; list = list->next, i++)
mono_array_set (res, gpointer, i, list->data);
}
/**
- * mono_handle_exception:
+ * ves_icall_System_Security_SecurityFrame_GetSecurityStack:
+ * @skip: the number of stack frames to skip
+ *
+ * This function returns an managed array of containing the security
+ * informations for each frame (after the skipped ones). This is used for
+ * [NonCas]Demand[Choice] where the complete evaluation of the stack is
+ * required.
+ */
+MonoArray*
+ves_icall_System_Security_SecurityFrame_GetSecurityStack (gint32 skip)
+{
+ MonoDomain *domain = mono_domain_get ();
+ MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
+ MonoSecurityStack ss;
+ MonoContext ctx;
+
+ MONO_ARCH_CONTEXT_DEF
+
+ MONO_INIT_CONTEXT_FROM_FUNC (&ctx, ves_icall_System_Security_SecurityFrame_GetSecurityStack);
+
+ ss.skips = skip;
+ ss.count = 0;
+ ss.maximum = MONO_CAS_INITIAL_STACK_SIZE;
+ ss.stack = mono_array_new (domain, mono_defaults.runtimesecurityframe_class, ss.maximum);
+ mono_walk_stack (domain, jit_tls, &ctx, callback_get_stack_frames_security_info, (gpointer)&ss);
+ /* g_warning ("STACK RESULT: %d out of %d", ss.count, ss.maximum); */
+ return ss.stack;
+}
+
+#ifndef CUSTOM_EXCEPTION_HANDLING
+
+/**
+ * mono_handle_exception_internal:
* @ctx: saved processor state
* @obj: the exception object
* @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.
*/
-gboolean
-mono_handle_exception (MonoContext *ctx, gpointer obj, gboolean test_only)
+static gboolean
+mono_handle_exception_internal (MonoContext *ctx, gpointer obj, gpointer original_ip, gboolean test_only, gint32 *out_filter_idx)
{
MonoDomain *domain = mono_domain_get ();
MonoJitInfo *ji, rji;
static int (*call_filter) (MonoContext *, gpointer) = NULL;
- static void (*restore_context) (struct sigcontext *);
+ static void (*restore_context) (void *);
MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
MonoLMF *lmf = jit_tls->lmf;
+ MonoArray *initial_trace_ips = NULL;
GList *trace_ips = NULL;
MonoException *mono_ex;
gboolean stack_overflow = FALSE;
MonoContext initial_ctx;
int frame_count = 0;
gboolean gc_disabled = FALSE;
- MonoString *initial_stack_trace;
+ gboolean has_dynamic_methods = FALSE;
+ gint32 filter_idx, first_filter_idx;
/*
* This function might execute on an alternate signal stack, and Boehm GC
*/
if (obj == domain->stack_overflow_ex) {
obj = mono_get_exception_stack_overflow ();
+ stack_overflow = TRUE;
}
else if (obj == domain->null_reference_ex) {
obj = mono_get_exception_null_reference ();
if (mono_object_isinst (obj, mono_defaults.exception_class)) {
mono_ex = (MonoException*)obj;
- initial_stack_trace = mono_ex->stack_trace;
+ initial_trace_ips = mono_ex->trace_ips;
} else {
mono_ex = NULL;
}
- if (obj == domain->stack_overflow_ex)
- stack_overflow = TRUE;
-
if (!call_filter)
call_filter = mono_arch_get_call_filter ();
MonoContext ctx_cp = *ctx;
if (mono_jit_trace_calls != NULL)
g_print ("EXCEPTION handling: %s\n", mono_object_class (obj)->name);
- if (!mono_handle_exception (&ctx_cp, obj, TRUE)) {
+ if (!mono_handle_exception_internal (&ctx_cp, obj, original_ip, TRUE, &first_filter_idx)) {
if (mono_break_on_exc)
G_BREAKPOINT ();
mono_unhandled_exception (obj);
+
+ if (mono_debugger_unhandled_exception (original_ip, MONO_CONTEXT_GET_SP (ctx), obj)) {
+ /*
+ * If this returns true, then we're running inside the
+ * Mono Debugger and the debugger wants us to restore the
+ * context and continue (normally, the debugger inserts
+ * a breakpoint on the `original_ip', so it regains control
+ * immediately after restoring the context).
+ */
+ MONO_CONTEXT_SET_IP (ctx, original_ip);
+ restore_context (ctx);
+ g_assert_not_reached ();
+ }
}
}
+ if (out_filter_idx)
+ *out_filter_idx = -1;
+ filter_idx = 0;
initial_ctx = *ctx;
memset (&rji, 0, sizeof (rji));
while (1) {
MonoContext new_ctx;
- char *trace = NULL;
- gboolean need_trace = FALSE;
guint32 free_stack;
- if (test_only && (frame_count < 1000))
- need_trace = TRUE;
-
- ji = mono_arch_find_jit_info (domain, jit_tls, &rji, &rji, ctx, &new_ctx,
- need_trace ? &trace : NULL, &lmf, NULL, NULL);
+ ji = mono_find_jit_info (domain, jit_tls, &rji, &rji, ctx, &new_ctx,
+ NULL, &lmf, NULL, NULL);
if (!ji) {
g_warning ("Exception inside function without unwind info");
g_assert_not_reached ();
if (ji != (gpointer)-1) {
frame_count ++;
- //printf ("M: %s %p %p %d.\n", mono_method_full_name (ji->method, TRUE), jit_tls->end_of_stack, ctx->ebp, count);
+ //printf ("M: %s %d %d.\n", mono_method_full_name (ji->method, TRUE), frame_count, test_only);
if (test_only && ji->method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE && mono_ex) {
- char *tmp, *strace;
-
/*
* Avoid overwriting the stack trace if the exception is
* rethrown. Also avoid giant stack traces during a stack
* overflow.
*/
- if (!initial_stack_trace && (frame_count < 1000)) {
- trace_ips = g_list_append (trace_ips, MONO_CONTEXT_GET_IP (ctx));
-
- if (!mono_ex->stack_trace)
- strace = g_strdup ("");
- else
- strace = mono_string_to_utf8 (mono_ex->stack_trace);
-
- tmp = g_strdup_printf ("%s%s\n", strace, trace);
- g_free (strace);
-
- mono_ex->stack_trace = mono_string_new (domain, tmp);
-
- g_free (tmp);
+ if (!initial_trace_ips && (frame_count < 1000)) {
+ trace_ips = g_list_prepend (trace_ips, MONO_CONTEXT_GET_IP (ctx));
}
}
+ if (ji->method->dynamic)
+ has_dynamic_methods = TRUE;
+
if (stack_overflow)
free_stack = (guint8*)(MONO_CONTEXT_GET_BP (ctx)) - (guint8*)(MONO_CONTEXT_GET_BP (&initial_ctx));
else
if ((free_stack > (64 * 1024)) && ji->num_clauses) {
int i;
- g_assert (ji->clauses);
-
for (i = 0; i < ji->num_clauses; i++) {
MonoJitExceptionInfo *ei = &ji->clauses [i];
+ gboolean filtered = FALSE;
+#ifdef __s390__
+ if (ei->try_start < MONO_CONTEXT_GET_IP (ctx) &&
+#else
if (ei->try_start <= MONO_CONTEXT_GET_IP (ctx) &&
+#endif
MONO_CONTEXT_GET_IP (ctx) <= ei->try_end) {
/* catch block */
if ((ei->flags == MONO_EXCEPTION_CLAUSE_NONE) || (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER)) {
- /* store the exception object int cfg->excvar */
- g_assert (ji->exvar_offset);
- *((gpointer *)((char *)MONO_CONTEXT_GET_BP (ctx) + ji->exvar_offset)) = obj;
+ /* store the exception object in cfg->excvar */
+ g_assert (ei->exvar_offset);
+ *((gpointer *)(gpointer)((char *)MONO_CONTEXT_GET_BP (ctx) + ei->exvar_offset)) = obj;
+ }
+
+ if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
+ // mono_debugger_handle_exception (ei->data.filter, MONO_CONTEXT_GET_SP (ctx), obj);
+ if (test_only) {
+ filtered = call_filter (ctx, ei->data.filter);
+ if (filtered && out_filter_idx)
+ *out_filter_idx = filter_idx;
+ }
+ else {
+ /*
+ * Filter clauses should only be run in the
+ * first pass of exception handling.
+ */
+ filtered = (filter_idx == first_filter_idx);
+ }
+ filter_idx ++;
}
if ((ei->flags == MONO_EXCEPTION_CLAUSE_NONE &&
- mono_object_isinst (obj, mono_class_get (ji->method->klass->image, ei->data.token))) ||
- ((ei->flags == MONO_EXCEPTION_CLAUSE_FILTER &&
- call_filter (ctx, ei->data.filter)))) {
+ mono_object_isinst (obj, ei->data.catch_class)) || filtered) {
if (test_only) {
- if (mono_ex)
- mono_ex->trace_ips = glist_to_array (trace_ips);
+ if (mono_ex && !initial_trace_ips) {
+ trace_ips = g_list_reverse (trace_ips);
+ mono_ex->trace_ips = glist_to_array (trace_ips, mono_defaults.int_class);
+ if (has_dynamic_methods)
+ /* These methods could go away anytime, so compute the stack trace now */
+ mono_ex->stack_trace = ves_icall_System_Exception_get_trace (mono_ex);
+ }
g_list_free (trace_ips);
- g_free (trace);
if (gc_disabled)
mono_gc_enable ();
}
if (mono_jit_trace_calls != NULL && mono_trace_eval (ji->method))
g_print ("EXCEPTION: catch found at clause %d of %s\n", i, mono_method_full_name (ji->method, TRUE));
+ mono_debugger_handle_exception (ei->handler_start, MONO_CONTEXT_GET_SP (ctx), obj);
MONO_CONTEXT_SET_IP (ctx, ei->handler_start);
jit_tls->lmf = lmf;
- g_free (trace);
if (gc_disabled)
mono_gc_enable ();
(ei->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
if (mono_jit_trace_calls != NULL && mono_trace_eval (ji->method))
g_print ("EXCEPTION: finally clause %d of %s\n", i, mono_method_full_name (ji->method, TRUE));
+ mono_debugger_handle_exception (ei->handler_start, MONO_CONTEXT_GET_SP (ctx), obj);
call_filter (ctx, ei->handler_start);
}
}
}
- g_free (trace);
-
*ctx = new_ctx;
- if ((ji == (gpointer)-1) || MONO_CONTEXT_GET_BP (ctx) >= jit_tls->end_of_stack) {
+ if (ji == (gpointer)-1) {
if (gc_disabled)
mono_gc_enable ();
if (IS_ON_SIGALTSTACK (jit_tls)) {
/* Switch back to normal stack */
- if (stack_overflow)
+ if (stack_overflow) {
/* Free up some stack space */
- MONO_CONTEXT_SET_SP (&initial_ctx, (guint32)(MONO_CONTEXT_GET_SP (&initial_ctx)) + (64 * 1024));
- MONO_CONTEXT_SET_IP (&initial_ctx, (unsigned int)jit_tls->abort_func);
+ MONO_CONTEXT_SET_SP (&initial_ctx, (gssize)(MONO_CONTEXT_GET_SP (&initial_ctx)) + (64 * 1024));
+ g_assert ((gssize)MONO_CONTEXT_GET_SP (&initial_ctx) < (gssize)jit_tls->end_of_stack);
+ }
+ MONO_CONTEXT_SET_IP (&initial_ctx, (gssize)jit_tls->abort_func);
restore_context (&initial_ctx);
}
else
jit_tls->abort_func (obj);
g_assert_not_reached ();
} else {
- if (mono_ex)
- mono_ex->trace_ips = glist_to_array (trace_ips);
+ if (mono_ex && !initial_trace_ips) {
+ trace_ips = g_list_reverse (trace_ips);
+ mono_ex->trace_ips = glist_to_array (trace_ips, mono_defaults.int_class);
+ if (has_dynamic_methods)
+ /* These methods could go away anytime, so compute the stack trace now */
+ mono_ex->stack_trace = ves_icall_System_Exception_get_trace (mono_ex);
+ }
g_list_free (trace_ips);
return FALSE;
}
g_assert_not_reached ();
}
+
+/**
+ * mono_debugger_run_finally:
+ * @start_ctx: saved processor state
+ *
+ * This method is called by the Mono Debugger to call all `finally' clauses of the
+ * current stack frame. It's used when the user issues a `return' command to make
+ * the current stack frame return. After returning from this method, the debugger
+ * unwinds the stack one frame and gives control back to the user.
+ *
+ * NOTE: This method is only used when running inside the Mono Debugger.
+ */
+void
+mono_debugger_run_finally (MonoContext *start_ctx)
+{
+ static int (*call_filter) (MonoContext *, gpointer) = NULL;
+ MonoDomain *domain = mono_domain_get ();
+ MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
+ MonoLMF *lmf = jit_tls->lmf;
+ MonoContext ctx, new_ctx;
+ MonoJitInfo *ji, rji;
+ int i;
+
+ ctx = *start_ctx;
+
+ ji = mono_find_jit_info (domain, jit_tls, &rji, NULL, &ctx, &new_ctx, NULL, &lmf, NULL, NULL);
+ if (!ji || ji == (gpointer)-1)
+ return;
+
+ if (!call_filter)
+ call_filter = mono_arch_get_call_filter ();
+
+ for (i = 0; i < ji->num_clauses; i++) {
+ MonoJitExceptionInfo *ei = &ji->clauses [i];
+
+ if ((ei->try_start <= MONO_CONTEXT_GET_IP (&ctx)) &&
+ (MONO_CONTEXT_GET_IP (&ctx) < ei->try_end) &&
+ (ei->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
+ call_filter (&ctx, ei->handler_start);
+ }
+ }
+}
+
+/**
+ * mono_handle_exception:
+ * @ctx: saved processor state
+ * @obj: the exception object
+ * @test_only: only test if the exception is caught, but dont call handlers
+ */
+gboolean
+mono_handle_exception (MonoContext *ctx, gpointer obj, gpointer original_ip, gboolean test_only)
+{
+ return mono_handle_exception_internal (ctx, obj, original_ip, test_only, NULL);
+}
+
+#endif /* CUSTOM_EXCEPTION_HANDLING */
+
+#ifdef MONO_ARCH_SIGSEGV_ON_ALTSTACK
+
+void
+mono_setup_altstack (MonoJitTlsData *tls)
+{
+ pthread_t self = pthread_self();
+ pthread_attr_t attr;
+ size_t stsize = 0;
+ struct sigaltstack sa;
+ guint8 *staddr = NULL;
+ guint8 *current = (guint8*)&staddr;
+
+ if (mono_running_on_valgrind ())
+ return;
+
+ /* Determine stack boundaries */
+ pthread_attr_init( &attr );
+#ifdef HAVE_PTHREAD_GETATTR_NP
+ pthread_getattr_np( self, &attr );
+#else
+#ifdef HAVE_PTHREAD_ATTR_GET_NP
+ pthread_attr_get_np( self, &attr );
+#elif defined(sun)
+ pthread_attr_getstacksize( &attr, &stsize );
+#else
+#error "Not implemented"
+#endif
+#endif
+#ifndef sun
+ pthread_attr_getstack( &attr, (void**)&staddr, &stsize );
+#endif
+
+ g_assert (staddr);
+
+ g_assert ((current > staddr) && (current < staddr + stsize));
+
+ tls->end_of_stack = staddr + stsize;
+
+ /*
+ * threads created by nptl does not seem to have a guard page, and
+ * since the main thread is not created by us, we can't even set one.
+ * Increasing stsize fools the SIGSEGV signal handler into thinking this
+ * is a stack overflow exception.
+ */
+ tls->stack_size = stsize + getpagesize ();
+
+ /* Setup an alternate signal stack */
+ tls->signal_stack = mmap (0, MONO_ARCH_SIGNAL_STACK_SIZE, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+ tls->signal_stack_size = MONO_ARCH_SIGNAL_STACK_SIZE;
+
+ g_assert (tls->signal_stack);
+
+ sa.ss_sp = tls->signal_stack;
+ sa.ss_size = MONO_ARCH_SIGNAL_STACK_SIZE;
+ sa.ss_flags = SS_ONSTACK;
+ sigaltstack (&sa, NULL);
+}
+
+void
+mono_free_altstack (MonoJitTlsData *tls)
+{
+ struct sigaltstack sa;
+ int err;
+
+ sa.ss_sp = tls->signal_stack;
+ sa.ss_size = MONO_ARCH_SIGNAL_STACK_SIZE;
+ sa.ss_flags = SS_DISABLE;
+ err = sigaltstack (&sa, NULL);
+ g_assert (err == 0);
+
+ if (tls->signal_stack)
+ munmap (tls->signal_stack, MONO_ARCH_SIGNAL_STACK_SIZE);
+}
+
+#endif /* MONO_ARCH_SIGSEGV_ON_ALTSTACK */
+
+static gboolean
+print_stack_frame (MonoMethod *method, gint32 native_offset, gint32 il_offset, gboolean managed, gpointer data)
+{
+ if (method) {
+ if (il_offset != -1)
+ fprintf (stderr, "in [0x%lx] %s\n", (long)il_offset, mono_method_full_name (method, TRUE));
+ else
+ fprintf (stderr, "in <0x%lx> %s\n", (long)native_offset, mono_method_full_name (method, TRUE));
+ } else
+ fprintf (stderr, "in <%lx> <unknown>\n", (long)native_offset);
+
+ return FALSE;
+}
+
+/*
+ * mono_handle_native_sigsegv:
+ *
+ * Handle a SIGSEGV received while in native code by printing diagnostic
+ * information and aborting.
+ */
+void
+mono_handle_native_sigsegv (void *ctx)
+{
+ /*
+ * A SIGSEGV indicates something went very wrong so we can no longer depend
+ * on anything working. So try to print out lots of diagnostics, starting
+ * with ones which have a greater change of working.
+ */
+ fprintf (stderr,
+ "\n"
+ "=================================================================\n"
+ "Got a SIGSEGV while executing native code. This usually indicates\n"
+ "a fatal error in the mono runtime or one of the native libraries \n"
+ "used by your application.\n"
+ "=================================================================\n"
+ "\n");
+
+ fprintf (stderr, "Stacktrace:\n\n");
+
+ mono_jit_walk_stack (print_stack_frame, TRUE, NULL);
+
+ fflush (stderr);
+
+#ifdef HAVE_BACKTRACE_SYMBOLS
+ {
+ void *array [256];
+ char **names;
+ int i, size;
+
+ fprintf (stderr, "\nNative stacktrace:\n\n");
+
+ size = backtrace (array, 256);
+ names = backtrace_symbols (array, size);
+ for (i =0; i < size; ++i) {
+ fprintf (stderr, "\t%s\n", names [i]);
+ }
+ free (names);
+ }
+
+ fflush (stderr);
+#endif
+
+ abort ();
+}
projects / mono.git / blobdiff