#include "mini.h"
#include "mini-sparc.h"
-gboolean mono_sparc_handle_exception (MonoContext *ctx, gpointer obj, gboolean test_only);
-
-#define MONO_CONTEXT_SET_IP(ctx,eip) do { (ctx)->ip = (long)(eip); } while (0);
-#define MONO_CONTEXT_SET_BP(ctx,ebp) do { (ctx)->fp = (long)(ebp); } while (0);
-
-#define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->ip))
-#define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->fp))
-
-#define IS_ON_SIGALTSTACK(jit_tls) FALSE
-
/*
- * arch_get_restore_context:
+ * mono_arch_get_restore_context:
*
* Returns a pointer to a method which restores a previously saved sigcontext.
*/
-static gpointer
-arch_get_restore_context (void)
+gpointer
+mono_arch_get_restore_context (void)
{
static guint32 start [32];
static int inited = 0;
}
/*
- * arch_get_call_filter:
+ * mono_arch_get_call_filter:
*
* Returns a pointer to a method which calls an exception filter. We
* also use this function to call finally handlers (we pass NULL as
*
* call_filter (MonoContext *ctx, gpointer ip)
*/
-static gpointer
-arch_get_call_filter (void)
+gpointer
+mono_arch_get_call_filter (void)
{
static guint32 start [64];
static int inited = 0;
static void (*restore_context) (MonoContext *);
if (!restore_context)
- restore_context = arch_get_restore_context ();
+ restore_context = mono_arch_get_restore_context ();
ctx.sp = (guint32*)sp;
ctx.ip = ip;
ctx.fp = (guint32*)ctx.sp [sparc_i6 - 16];
- mono_sparc_handle_exception (&ctx, ex, FALSE);
+ mono_handle_exception (&ctx, ex, FALSE);
restore_context (&ctx);
g_assert_not_reached ();
}
/**
- * arch_get_throw_exception_by_name:
+ * mono_arch_get_throw_exception_by_name:
*
* Returns a function pointer which can be used to raise exceptions.
* The returned function has the following
}
/**
- * arch_get_throw_exception_by_name:
+ * mono_arch_get_throw_exception_by_name:
*
* Returns a function pointer which can be used to raise
* corlib exceptions. The returned function has the following
return FALSE;
}
-static MonoArray *
-glist_to_array (GList *list)
-{
- MonoDomain *domain = mono_domain_get ();
- MonoArray *res;
- int len, i;
-
- if (!list)
- return NULL;
-
- len = g_list_length (list);
- res = mono_array_new (domain, mono_defaults.int_class, len);
-
- for (i = 0; list; list = list->next, i++)
- mono_array_set (res, gpointer, i, list->data);
-
- return res;
-}
-
-MonoArray *
-ves_icall_get_trace (MonoException *exc, gint32 skip, MonoBoolean need_file_info)
-{
- return NULL;
-}
-
-void
-mono_jit_walk_stack (MonoStackWalk func, 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_sparc_flushw ();
-
- MONO_CONTEXT_SET_IP (&ctx, __builtin_return_address (0));
- MONO_CONTEXT_SET_BP (&ctx, __builtin_frame_address (0));
-
- 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);
- g_assert (ji);
-
- if (ji == (gpointer)-1)
- return;
-
- il_offset = mono_debug_il_offset_from_address (ji->method, native_offset, domain);
-
- if (func (ji->method, native_offset, il_offset, managed, user_data))
- return;
-
- ctx = new_ctx;
- }
-}
-
-MonoBoolean
-ves_icall_get_frame_info (gint32 skip, MonoBoolean need_file_info,
- MonoReflectionMethod **method,
- gint32 *iloffset, gint32 *native_offset,
- MonoString **file, gint32 *line, gint32 *column)
-{
- return FALSE;
-}
-
-/**
- * mono_sparc_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_sparc_handle_exception (MonoContext *ctx, gpointer obj, gboolean test_only)
-{
- MonoDomain *domain = mono_domain_get ();
- MonoJitInfo *ji, rji;
- static int (*call_filter) (MonoContext *, gpointer) = NULL;
- static void (*restore_context) (MonoContext *);
- MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
- MonoLMF *lmf = jit_tls->lmf;
- 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;
-
- /*
- * This function might execute on an alternate signal stack, and Boehm GC
- * can't handle that.
- * Also, since the altstack is small, stack space intensive operations like
- * JIT compilation should be avoided.
- */
- if (IS_ON_SIGALTSTACK (jit_tls)) {
- /*
- * FIXME: disabling/enabling GC while already on a signal stack might
- * not be safe either.
- */
- /* Have to reenable it later */
- gc_disabled = TRUE;
- mono_gc_disable ();
- }
-
- g_assert (ctx != NULL);
- if (!obj) {
- MonoException *ex = mono_get_exception_null_reference ();
- ex->message = mono_string_new (domain, "Object reference not set to an instance of an object");
- obj = (MonoObject *)ex;
- }
-
- if (mono_object_isinst (obj, mono_defaults.exception_class)) {
- mono_ex = (MonoException*)obj;
- mono_ex->stack_trace = NULL;
- initial_stack_trace = mono_ex->stack_trace;
- } else {
- mono_ex = NULL;
- }
-
- //printf ("HANDLING EXCEPTION: %s\n", ((MonoObject*)obj)->vtable->klass->name);
-
- if (obj == domain->stack_overflow_ex)
- stack_overflow = TRUE;
-
- if (!call_filter)
- call_filter = arch_get_call_filter ();
-
- if (!restore_context)
- restore_context = arch_get_restore_context ();
-
- g_assert (jit_tls->end_of_stack);
- g_assert (jit_tls->abort_func);
-
- if (!test_only) {
- MonoContext ctx_cp = *ctx;
- if (mono_jit_trace_calls != NULL)
- g_print ("EXCEPTION handling: %s\n", mono_object_class (obj)->name);
- if (!mono_sparc_handle_exception (&ctx_cp, obj, TRUE)) {
- if (mono_break_on_exc)
- G_BREAKPOINT ();
- mono_unhandled_exception (obj);
- }
- }
-
- 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);
- if (!ji) {
- g_warning ("Exception inside function without unwind info");
- g_assert_not_reached ();
- }
-
- //printf ("JI: %p IP: %p SP: %p.\n", ji, (gpointer)new_ctx.ip, new_ctx.sp);
-
- 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);
-
- 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 (stack_overflow)
- free_stack = (guint8*)(MONO_CONTEXT_GET_BP (ctx)) - (guint8*)(MONO_CONTEXT_GET_BP (&initial_ctx));
- else
- free_stack = 0xffffff;
-*/
- free_stack = 0xffffff;
-
- /*
- * During stack overflow, wait till the unwinding frees some stack
- * space before running handlers/finalizers.
- */
- 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];
-
- if (ei->try_start <= MONO_CONTEXT_GET_IP (ctx) &&
- 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;
- }
-
- 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)))) {
- if (test_only) {
- if (mono_ex)
- mono_ex->trace_ips = glist_to_array (trace_ips);
- g_list_free (trace_ips);
- g_free (trace);
-
- if (gc_disabled)
- mono_gc_enable ();
- return TRUE;
- }
- 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_CONTEXT_SET_IP (ctx, ei->handler_start);
- jit_tls->lmf = lmf;
- g_free (trace);
-
- if (gc_disabled)
- mono_gc_enable ();
- return 0;
- }
- if (!test_only && ei->try_start <= MONO_CONTEXT_GET_IP (ctx) &&
- MONO_CONTEXT_GET_IP (ctx) < ei->try_end &&
- (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));
- 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 (gc_disabled)
- mono_gc_enable ();
-
- if (!test_only) {
- jit_tls->lmf = lmf;
-
- if (IS_ON_SIGALTSTACK (jit_tls)) {
- /* Switch back to normal stack */
- if (stack_overflow)
- /* Free up some stack space */
- initial_ctx.sp += (64 * 1024);
- initial_ctx.ip = (unsigned int)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);
- g_list_free (trace_ips);
- return FALSE;
- }
- }
- }
-
- g_assert_not_reached ();
-}
-
gboolean
mono_arch_handle_exception (void *sigctx, gpointer obj, gboolean test_only)
{
mctx.sp = ctx->uc_mcontext.gregs [REG_SP];
mctx.fp = mctx.sp [sparc_fp - 16];
- mono_sparc_handle_exception (&mctx, obj, test_only);
+ mono_handle_exception (&mctx, obj, test_only);
/* We can't use restore_context to return from a signal handler */
ctx->uc_mcontext.gregs [REG_PC] = mctx.ip;
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