1 /*------------------------------------------------------------------*/
3 /* Name - exceptions-s390.c */
5 /* Function - Exception support for S/390. */
7 /* Name - Neale Ferguson (Neale.Ferguson@SoftwareAG-usa.com) */
9 /* Date - January, 2004 */
11 /* Derivation - From exceptions-x86 & exceptions-ppc */
12 /* Paolo Molaro (lupus@ximian.com) */
13 /* Dietmar Maurer (dietmar@ximian.com) */
15 /* Copyright - 2001 Ximian, Inc. */
17 /*------------------------------------------------------------------*/
19 /*------------------------------------------------------------------*/
21 /*------------------------------------------------------------------*/
23 #define MONO_CONTEXT_SET_IP(ctx,ip) \
25 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip; \
26 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip; \
29 #define MONO_CONTEXT_SET_BP(ctx,bp) \
31 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp; \
32 (ctx)->uc_stack.ss_sp = (unsigned long)bp; \
35 #define MONO_CONTEXT_GET_IP(ctx) context_get_ip ((ctx))
36 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
38 /* disable this for now */
39 #undef MONO_USE_EXC_TABLES
41 #define S390_CALLFILTER_INTREGS S390_MINIMAL_STACK_SIZE
42 #define S390_CALLFILTER_FLTREGS S390_CALLFILTER_INTREGS+(16*sizeof(gulong))
43 #define S390_CALLFILTER_ACCREGS S390_CALLFILTER_FLTREGS+(16*sizeof(gdouble))
44 #define S390_CALLFILTER_SIZE (S390_CALLFILTER_ACCREGS+(16*sizeof(gulong)))
46 #define S390_THROWSTACK_ACCPRM S390_MINIMAL_STACK_SIZE
47 #define S390_THROWSTACK_FPCPRM S390_THROWSTACK_ACCPRM+sizeof(gpointer)
48 #define S390_THROWSTACK_INTREGS S390_THROWSTACK_FPCPRM+sizeof(gulong)
49 #define S390_THROWSTACK_FLTREGS S390_THROWSTACK_INTREGS+(16*sizeof(gulong))
50 #define S390_THROWSTACK_ACCREGS S390_THROWSTACK_FLTREGS+(16*sizeof(gdouble))
51 #define S390_THROWSTACK_SIZE (S390_THROWSTACK_ACCREGS+(16*sizeof(gulong)))
53 /*========================= End of Defines =========================*/
55 /*------------------------------------------------------------------*/
57 /*------------------------------------------------------------------*/
65 #include <mono/arch/s390x/s390x-codegen.h>
66 #include <mono/metadata/appdomain.h>
67 #include <mono/metadata/tabledefs.h>
68 #include <mono/metadata/threads.h>
69 #include <mono/metadata/debug-helpers.h>
70 #include <mono/metadata/exception.h>
71 #include <mono/metadata/mono-debug.h>
74 #include "mini-s390x.h"
76 /*========================= End of Includes ========================*/
78 /*------------------------------------------------------------------*/
80 /*------------------------------------------------------------------*/
90 #ifdef MONO_USE_EXC_TABLES
92 /*************************************/
93 /* STACK UNWINDING STUFF */
94 /*************************************/
96 /* These definitions are from unwind-dw2.c in glibc 2.2.5 */
99 #define DWARF_FRAME_REGISTERS 17
101 typedef struct frame_state
107 long reg_or_offset[DWARF_FRAME_REGISTERS+1];
108 unsigned short cfa_reg;
109 unsigned short retaddr_column;
110 char saved[DWARF_FRAME_REGISTERS+1];
113 typedef struct frame_state * (*framesf) (void *, struct frame_state *);
117 /*========================= End of Typedefs ========================*/
119 /*------------------------------------------------------------------*/
120 /* P r o t o t y p e s */
121 /*------------------------------------------------------------------*/
123 gboolean mono_arch_handle_exception (void *ctx,
127 /*========================= End of Prototypes ======================*/
129 /*------------------------------------------------------------------*/
130 /* G l o b a l V a r i a b l e s */
131 /*------------------------------------------------------------------*/
133 #ifdef MONO_USE_EXC_TABLES
135 static framesf frame_state_for = NULL;
137 static gboolean inited = FALSE;
139 typedef char ** (*get_backtrace_symbols_type) (void *__const *__array, int __size);
141 static get_backtrace_symbols_type get_backtrace_symbols = NULL;
145 /*====================== End of Global Variables ===================*/
147 /*------------------------------------------------------------------*/
149 /* Name - context_get_ip */
151 /* Function - Extract the current instruction address from the */
154 /*------------------------------------------------------------------*/
156 static inline gpointer
157 context_get_ip (MonoContext *ctx)
161 ip = (gpointer) ((gint32) (ctx->uc_mcontext.psw.addr) & 0x7fffffff);
165 /*========================= End of Function ========================*/
167 #ifdef MONO_USE_EXC_TABLES
169 /*------------------------------------------------------------------*/
171 /* Name - init_frame_state_for */
173 /* Function - Load the __frame_state_for from libc. */
174 /* There are two versions of __frame_state_for: one */
175 /* in libgcc.a and the other in glibc.so. We need */
176 /* the version from glibc. For more information, see:*/
177 /* http://gcc.gnu.org/ml/gcc/2002-08/msg00192.html */
179 /*------------------------------------------------------------------*/
182 init_frame_state_for (void)
186 if ((module = g_module_open ("libc.so.6", G_MODULE_BIND_LAZY))) {
188 if (!g_module_symbol (module, "__frame_state_for", (gpointer*)&frame_state_for))
189 frame_state_for = NULL;
191 if (!g_module_symbol (module, "backtrace_symbols", (gpointer*)&get_backtrace_symbols)) {
192 get_backtrace_symbols = NULL;
193 frame_state_for = NULL;
196 g_module_close (module);
202 /*========================= End of Function ========================*/
206 /*------------------------------------------------------------------*/
208 /* Name - mono_arch_has_unwind_info */
210 /* Function - Tests if a function has a DWARF exception table */
211 /* that is able to restore all caller saved registers*/
213 /*------------------------------------------------------------------*/
216 mono_arch_has_unwind_info (gconstpointer addr)
219 struct frame_state state_in;
220 struct frame_state *res;
223 init_frame_state_for ();
225 if (!frame_state_for)
228 g_assert (method->addr);
230 memset (&state_in, 0, sizeof (state_in));
232 /* offset 10 is just a guess, but it works for all methods tested */
233 if ((res = frame_state_for ((char *)method->addr + 10, &state_in))) {
235 if (res->saved [X86_EBX] != 1 ||
236 res->saved [X86_EDI] != 1 ||
237 res->saved [X86_EBP] != 1 ||
238 res->saved [X86_ESI] != 1) {
250 /*========================= End of Function ========================*/
252 /*------------------------------------------------------------------*/
254 /* Name - s390_unwind_native_frame */
256 /* Function - Use the context to unwind a stack frame. */
258 /*------------------------------------------------------------------*/
261 s390_unwind_native_frame (MonoDomain *domain, MonoJitTlsData *jit_tls,
262 struct sigcontext *ctx, struct sigcontext *new_ctx,
263 MonoLMF *lmf, char **trace)
266 struct stack_frame *frame;
269 struct frame_state state_in;
270 struct frame_state *res;
276 init_frame_state_for ();
278 if (!frame_state_for)
281 frame = MONO_CONTEXT_GET_BP (ctx);
283 max_stack = lmf && lmf->method ? lmf : jit_tls->end_of_stack;
287 memset (&state_in, 0, sizeof (state_in));
289 while ((gpointer)frame->next < (gpointer)max_stack) {
290 gpointer ip, addr = frame->return_address;
292 char *tmp, **symbols;
295 ip = MONO_CONTEXT_GET_IP (new_ctx);
296 symbols = get_backtrace_symbols (&ip, 1);
298 tmp = g_strdup_printf ("%s\nin (unmanaged) %s", *trace, symbols [0]);
300 tmp = g_strdup_printf ("in (unmanaged) %s", symbols [0]);
307 if ((res = frame_state_for (addr, &state_in))) {
310 cfa = (gint8*) (get_sigcontext_reg (new_ctx, res->cfa_reg) + res->cfa_offset);
311 frame = (struct stack_frame *)((gint8*)cfa - 8);
312 for (i = 0; i < DWARF_FRAME_REGISTERS + 1; i++) {
313 int how = res->saved[i];
315 g_assert ((how == 0) || (how == 1));
318 val = * (long*) ((gint8*)cfa + res->reg_or_offset[i]);
319 set_sigcontext_reg (new_ctx, i, val);
322 new_ctx->SC_ESP = (long)cfa;
324 if (res->saved [X86_EBX] == 1 &&
325 res->saved [X86_EDI] == 1 &&
326 res->saved [X86_EBP] == 1 &&
327 res->saved [X86_ESI] == 1 &&
328 (ji = mono_jit_info_table_find (domain, frame->return_address))) {
329 //printf ("FRAME CFA %s\n", mono_method_full_name (ji->method, TRUE));
335 MONO_CONTEXT_SET_IP (new_ctx, frame->return_address);
337 MONO_CONTEXT_SET_BP (new_ctx, frame);
339 /* stop if !frame or when we detect an unexpected managed frame */
340 if (!frame || mono_jit_info_table_find (domain, frame->return_address)) {
358 /*========================= End of Function ========================*/
360 /*------------------------------------------------------------------*/
362 /* Name - arch_get_call_filter */
364 /* Function - Return a pointer to a method which calls an */
365 /* exception filter. We also use this function to */
366 /* call finally handlers (we pass NULL as @exc */
367 /* object in this case). */
369 /*------------------------------------------------------------------*/
372 arch_get_call_filter (void)
374 static guint8 start [512];
375 static int inited = 0;
377 int alloc_size, pos, i;
383 /* call_filter (MonoContext *ctx, unsigned long eip, gpointer exc) */
386 s390_stmg(code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
387 s390_lgr (code, s390_r14, STK_BASE);
388 alloc_size = S390_ALIGN(S390_CALLFILTER_SIZE, S390_STACK_ALIGNMENT);
389 s390_aghi(code, STK_BASE, -alloc_size);
390 s390_stg (code, s390_r14, 0, STK_BASE, 0);
392 /*------------------------------------------------------*/
393 /* save general registers on stack */
394 /*------------------------------------------------------*/
395 s390_stmg(code, s390_r0, s390_r13, STK_BASE, S390_CALLFILTER_INTREGS);
397 /*------------------------------------------------------*/
399 /*------------------------------------------------------*/
400 s390_lgr (code, s390_r13, s390_r2);
402 /*------------------------------------------------------*/
403 /* Get A(Handler Entry Point) */
404 /*------------------------------------------------------*/
405 s390_lgr (code, s390_r0, s390_r3);
407 /*------------------------------------------------------*/
408 /* Set parameter register with Exception */
409 /*------------------------------------------------------*/
410 s390_lgr (code, s390_r2, s390_r4);
412 /*------------------------------------------------------*/
413 /* Load all registers with values from the context */
414 /*------------------------------------------------------*/
415 s390_lmg (code, s390_r3, s390_r12, s390_r13, G_STRUCT_OFFSET(MonoContext, uc_mcontext.gregs[3]));
416 pos = G_STRUCT_OFFSET(MonoContext, uc_mcontext.fpregs.fprs[0]);
417 for (i = 0; i < 16; ++i) {
418 s390_ld (code, i, 0, s390_r13, pos);
419 pos += sizeof(gdouble);
422 /*------------------------------------------------------*/
423 /* Point at the copied stack frame and call the filter */
424 /*------------------------------------------------------*/
425 s390_lgr (code, s390_r1, s390_r0);
426 s390_basr (code, s390_r14, s390_r1);
428 /*------------------------------------------------------*/
429 /* Save return value */
430 /*------------------------------------------------------*/
431 s390_lgr (code, s390_r14, s390_r2);
433 /*------------------------------------------------------*/
434 /* Restore all the regs from the stack */
435 /*------------------------------------------------------*/
436 s390_lmg (code, s390_r0, s390_r13, STK_BASE, S390_CALLFILTER_INTREGS);
438 s390_lgr (code, s390_r2, s390_r14);
439 s390_aghi (code, s390_r15, alloc_size);
440 s390_lmg (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
441 s390_br (code, s390_r14);
443 g_assert ((code - start) < sizeof(start));
447 /*========================= End of Function ========================*/
449 /*------------------------------------------------------------------*/
451 /* Name - throw_exception. */
453 /* Function - Raise an exception based on the parameters passed.*/
455 /*------------------------------------------------------------------*/
458 throw_exception (MonoObject *exc, unsigned long ip, unsigned long sp,
459 gulong *int_regs, gdouble *fp_regs, gulong *acc_regs, guint fpc)
461 static void (*restore_context) (MonoContext *);
465 memset(&ctx, 0, sizeof(ctx));
469 /* adjust eip so that it point into the call instruction */
472 for (iReg = 0; iReg < 16; iReg++) {
473 ctx.uc_mcontext.gregs[iReg] = int_regs[iReg];
474 ctx.uc_mcontext.fpregs.fprs[iReg].d = fp_regs[iReg];
475 ctx.uc_mcontext.aregs[iReg] = acc_regs[iReg];
478 ctx.uc_mcontext.fpregs.fpc = fpc;
480 MONO_CONTEXT_SET_BP (&ctx, sp);
481 MONO_CONTEXT_SET_IP (&ctx, ip);
483 if (mono_object_isinst (exc, mono_defaults.exception_class)) {
484 MonoException *mono_ex = (MonoException*)exc;
485 mono_ex->stack_trace = NULL;
487 mono_arch_handle_exception (&ctx, exc, FALSE);
490 g_assert_not_reached ();
493 /*========================= End of Function ========================*/
495 /*------------------------------------------------------------------*/
497 /* Name - arch_get_throw_exception_generic */
499 /* Function - Return a function pointer which can be used to */
500 /* raise exceptions. The returned function has the */
501 /* following signature: */
502 /* void (*func) (MonoException *exc); or, */
503 /* void (*func) (char *exc_name); */
505 /*------------------------------------------------------------------*/
508 mono_arch_get_throw_exception_generic (guint8 *start, int size, int by_name)
511 int alloc_size, pos, i, offset;
515 s390_stmg(code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
516 alloc_size = S390_ALIGN(S390_THROWSTACK_SIZE, S390_STACK_ALIGNMENT);
517 s390_lgr (code, s390_r14, STK_BASE);
518 s390_aghi (code, STK_BASE, -alloc_size);
519 s390_stg (code, s390_r14, 0, STK_BASE, 0);
521 s390_lgr (code, s390_r4, s390_r2);
522 s390_bras (code, s390_r13, 6);
523 s390_llong(code, mono_defaults.corlib);
524 s390_llong(code, "System");
525 s390_lg (code, s390_r2, 0, s390_r13, 0);
526 s390_lg (code, s390_r3, 0, s390_r13, 4);
527 offset = (guint32) S390_RELATIVE(mono_exception_from_name, code);
528 s390_brasl(code, s390_r14, offset);
530 /*------------------------------------------------------*/
531 /* save the general registers on the stack */
532 /*------------------------------------------------------*/
533 s390_stmg(code, s390_r0, s390_r13, STK_BASE, S390_THROWSTACK_INTREGS);
535 s390_lgr (code, s390_r1, STK_BASE);
536 s390_aghi(code, s390_r1, alloc_size);
537 /*------------------------------------------------------*/
538 /* save the return address in the parameter register */
539 /*------------------------------------------------------*/
540 s390_lg (code, s390_r3, 0, s390_r1, S390_RET_ADDR_OFFSET);
542 /*------------------------------------------------------*/
543 /* save the floating point registers */
544 /*------------------------------------------------------*/
545 pos = S390_THROWSTACK_FLTREGS;
546 for (i = 0; i < 16; ++i) {
547 s390_std (code, i, 0,STK_BASE, pos);
548 pos += sizeof (gdouble);
550 /*------------------------------------------------------*/
551 /* save the access registers */
552 /*------------------------------------------------------*/
553 s390_stam (code, s390_r0, s390_r15, STK_BASE, S390_THROWSTACK_ACCREGS);
555 /*------------------------------------------------------*/
556 /* call throw_exception (exc, ip, sp, gr, fr, ar) */
557 /* exc is already in place in r2 */
558 /*------------------------------------------------------*/
559 s390_lgr (code, s390_r4, s390_r1); /* caller sp */
560 /*------------------------------------------------------*/
561 /* pointer to the saved int regs */
562 /*------------------------------------------------------*/
563 s390_la (code, s390_r5, 0, STK_BASE, S390_THROWSTACK_INTREGS);
564 s390_la (code, s390_r6, 0, STK_BASE, S390_THROWSTACK_FLTREGS);
565 s390_la (code, s390_r7, 0, STK_BASE, S390_THROWSTACK_ACCREGS);
566 s390_stg (code, s390_r7, 0, STK_BASE, S390_THROWSTACK_ACCPRM);
567 s390_stfpc(code, STK_BASE, S390_THROWSTACK_FPCPRM);
568 offset = (guint32) S390_RELATIVE(throw_exception, code);
569 s390_brasl(code, s390_r14, offset);
570 /* we should never reach this breakpoint */
572 g_assert ((code - start) < size);
576 /*========================= End of Function ========================*/
578 /*------------------------------------------------------------------*/
580 /* Name - arch_get_throw_exception */
582 /* Function - Return a function pointer which can be used to */
583 /* raise exceptions. The returned function has the */
584 /* following signature: */
585 /* void (*func) (MonoException *exc); */
587 /*------------------------------------------------------------------*/
590 mono_arch_get_throw_exception (void)
592 static guint8 start [384];
593 static int inited = 0;
597 mono_arch_get_throw_exception_generic (start, sizeof (start), FALSE);
602 /*========================= End of Function ========================*/
604 /*------------------------------------------------------------------*/
606 /* Name - arch_get_throw_exception_by_name */
608 /* Function - Return a function pointer which can be used to */
609 /* raise corlib exceptions. The return function has */
610 /* the following signature: */
611 /* void (*func) (char *exc_name); */
613 /*------------------------------------------------------------------*/
616 mono_arch_get_throw_exception_by_name (void)
618 static guint8 start [384];
619 static int inited = 0;
623 mono_arch_get_throw_exception_generic (start, sizeof (start), TRUE);
628 /*========================= End of Function ========================*/
630 /*------------------------------------------------------------------*/
632 /* Name - glist_to_array */
634 /* Function - Convert a list to a mono array. */
636 /*------------------------------------------------------------------*/
639 glist_to_array (GList *list)
641 MonoDomain *domain = mono_domain_get ();
648 len = g_list_length (list);
649 res = mono_array_new (domain, mono_defaults.int_class, len);
651 for (i = 0; list; list = list->next, i++)
652 mono_array_set (res, gpointer, i, list->data);
657 /*========================= End of Function ========================*/
659 /*------------------------------------------------------------------*/
661 /* Name - mono_arch_find_jit_info */
663 /* Function - This function is used to gather informatoin from */
664 /* @ctx. It returns the MonoJitInfo of the corres- */
665 /* ponding function, unwinds one stack frame and */
666 /* stores the resulting context into @new_ctx. It */
667 /* also stores a string describing the stack location*/
668 /* into @trace (if not NULL), and modifies the @lmf */
669 /* if necessary. @native_offset returns the IP off- */
670 /* set from the start of the function or -1 if that */
671 /* informatoin is not available. */
673 /*------------------------------------------------------------------*/
676 mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls,
677 MonoJitInfo *res, MonoJitInfo *prev_ji, MonoContext *ctx,
678 MonoContext *new_ctx, char **trace, MonoLMF **lmf,
679 int *native_offset, gboolean *managed)
682 gpointer ip = MONO_CONTEXT_GET_IP (ctx);
685 MonoS390StackFrame *sframe;
688 (ip > prev_ji->code_start &&
689 ((guint8 *) ip < ((guint8 *) prev_ji->code_start) + prev_ji->code_size)))
692 ji = mono_jit_info_table_find (domain, ip);
704 char *source_location, *tmpaddr, *fname;
705 gint32 address, iloffset;
709 // memcpy(new_ctx, ctx, sizeof(*new_ctx));
711 if (*lmf && (MONO_CONTEXT_GET_BP (ctx) >= (gpointer)(*lmf)->ebp)) {
712 /* remove any unused lmf */
713 *lmf = (*lmf)->previous_lmf;
716 address = (char *)ip - (char *)ji->code_start;
719 *native_offset = address;
722 if (!ji->method->wrapper_type)
726 source_location = mono_debug_source_location_from_address (ji->method, address, NULL, domain);
727 iloffset = mono_debug_il_offset_from_address (ji->method, address, domain);
730 tmpaddr = g_strdup_printf ("<0x%08x>", address);
732 tmpaddr = g_strdup_printf ("[0x%08x]", iloffset);
734 fname = mono_method_full_name (ji->method, TRUE);
737 *trace = g_strdup_printf ("in %s (at %s) %s", tmpaddr, source_location, fname);
739 *trace = g_strdup_printf ("in %s %s", tmpaddr, fname);
742 g_free (source_location);
745 sframe = (MonoS390StackFrame *) MONO_CONTEXT_GET_BP (ctx);
746 MONO_CONTEXT_SET_BP (new_ctx, sframe->prev);
747 sframe = (MonoS390StackFrame *) sframe->prev;
748 MONO_CONTEXT_SET_IP (new_ctx, sframe->return_address);
749 memcpy (&new_ctx->uc_mcontext.gregs[6], sframe->regs, (8*sizeof(gint32)));
752 #ifdef MONO_USE_EXC_TABLES
753 } else if ((ji = s390_unwind_native_frame (domain, jit_tls, ctx, new_ctx, *lmf, trace))) {
765 *trace = g_strdup_printf ("in (unmanaged) %s", mono_method_full_name ((*lmf)->method, TRUE));
767 if ((ji = mono_jit_info_table_find (domain, (gpointer)(*lmf)->eip))) {
770 memset (res, 0, sizeof (MonoJitInfo));
771 res->method = (*lmf)->method;
775 MONO_CONTEXT_SET_BP (ctx, (*lmf)->ebp);
776 MONO_CONTEXT_SET_IP (ctx, (*lmf)->eip);
778 memcpy(new_ctx->uc_mcontext.gregs, (*lmf)->gregs, sizeof((*lmf)->gregs));
779 memcpy(new_ctx->uc_mcontext.fpregs.fprs, (*lmf)->fregs, sizeof((*lmf)->fregs));
781 MONO_CONTEXT_SET_BP (new_ctx, (*lmf)->ebp);
782 MONO_CONTEXT_SET_IP (new_ctx, (*lmf)->eip);
783 *lmf = (*lmf)->previous_lmf;
792 /*========================= End of Function ========================*/
794 /*------------------------------------------------------------------*/
796 /* Name - ves_icall_get_trace */
800 /*------------------------------------------------------------------*/
803 ves_icall_get_trace (MonoException *exc, gint32 skip, MonoBoolean need_file_info)
805 MonoDomain *domain = mono_domain_get ();
807 MonoArray *ta = exc->trace_ips;
811 return mono_array_new (domain, mono_defaults.stack_frame_class, 0);
814 len = mono_array_length (ta);
816 res = mono_array_new (domain, mono_defaults.stack_frame_class,
817 len > skip ? len - skip : 0);
819 for (i = skip; i < len; i++) {
821 MonoStackFrame *sf = (MonoStackFrame *)mono_object_new (domain, mono_defaults.stack_frame_class);
822 gpointer ip = mono_array_get (ta, gpointer, i);
824 ji = mono_jit_info_table_find (domain, ip);
826 mono_array_set (res, gpointer, i, sf);
830 sf->method = mono_method_get_object (domain, ji->method, NULL);
831 sf->native_offset = (char *)ip - (char *)ji->code_start;
833 sf->il_offset = mono_debug_il_offset_from_address (ji->method, sf->native_offset, domain);
835 if (need_file_info) {
838 filename = mono_debug_source_location_from_address (ji->method, sf->native_offset, &sf->line, domain);
840 sf->filename = filename? mono_string_new (domain, filename): NULL;
846 mono_array_set (res, gpointer, i, sf);
852 /*========================= End of Function ========================*/
854 /*------------------------------------------------------------------*/
856 /* Name - mono_jit_walk_stack */
860 /*------------------------------------------------------------------*/
863 mono_jit_walk_stack (MonoStackWalk func, gpointer user_data) {
864 MonoDomain *domain = mono_domain_get ();
865 MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
866 MonoLMF *lmf = jit_tls->lmf;
867 MonoJitInfo *ji, rji;
868 gint native_offset, il_offset;
870 MonoContext ctx, new_ctx;
872 MONO_CONTEXT_SET_IP (&ctx, __builtin_return_address (0));
873 MONO_CONTEXT_SET_BP (&ctx, __builtin_frame_address (1));
875 while (MONO_CONTEXT_GET_BP (&ctx) < jit_tls->end_of_stack) {
877 ji = mono_arch_find_jit_info (domain, jit_tls, &rji, NULL,
878 &ctx, &new_ctx, NULL, &lmf,
879 &native_offset, &managed);
882 if (ji == (gpointer)-1)
885 il_offset = mono_debug_il_offset_from_address (ji->method, native_offset, domain);
887 if (func (ji->method, native_offset, il_offset, managed, user_data))
894 /*========================= End of Function ========================*/
896 /*------------------------------------------------------------------*/
898 /* Name - ves_icall_get_frame_info */
902 /*------------------------------------------------------------------*/
905 ves_icall_get_frame_info (gint32 skip, MonoBoolean need_file_info,
906 MonoReflectionMethod **method,
907 gint32 *iloffset, gint32 *native_offset,
908 MonoString **file, gint32 *line, gint32 *column)
910 MonoDomain *domain = mono_domain_get ();
911 MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
912 MonoLMF *lmf = jit_tls->lmf;
913 MonoJitInfo *ji, rji;
914 MonoContext ctx, new_ctx;
916 MONO_CONTEXT_SET_IP (&ctx, ves_icall_get_frame_info);
917 MONO_CONTEXT_SET_BP (&ctx, __builtin_frame_address (0));
922 ji = mono_arch_find_jit_info (domain, jit_tls, &rji, NULL,
923 &ctx, &new_ctx, NULL, &lmf,
924 native_offset, NULL);
928 if (!ji || ji == (gpointer)-1 || MONO_CONTEXT_GET_BP (&ctx) >= jit_tls->end_of_stack)
931 /* skip all wrappers ??*/
932 if (ji->method->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE ||
933 ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK ||
934 ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE)
941 *method = mono_method_get_object (domain, ji->method, NULL);
942 *iloffset = mono_debug_il_offset_from_address (ji->method, *native_offset, domain);
944 if (need_file_info) {
947 filename = mono_debug_source_location_from_address (ji->method, *native_offset, line, domain);
949 *file = filename? mono_string_new (domain, filename): NULL;
958 /*========================= End of Function ========================*/
960 /*------------------------------------------------------------------*/
962 /* Name - mono_arch_handle_exception */
964 /* Function - Handle an exception raised by the JIT code. */
966 /* Parameters - ctx - Saved processor state */
967 /* obj - The exception object */
968 /* test_only - Only test if the exception is caught, */
969 /* but don't call handlers */
971 /*------------------------------------------------------------------*/
974 mono_arch_handle_exception (void *uc, gpointer obj, gboolean test_only)
976 MonoContext *ctx = uc;
977 MonoDomain *domain = mono_domain_get ();
978 MonoJitInfo *ji, rji;
979 static int (*call_filter) (MonoContext *, gpointer, gpointer) = NULL;
980 MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
981 MonoLMF *lmf = jit_tls->lmf;
982 GList *trace_ips = NULL;
983 MonoException *mono_ex;
985 g_assert (ctx != NULL);
986 memset(&rji, 0, sizeof(rji));
988 MonoException *ex = mono_get_exception_null_reference ();
989 ex->message = mono_string_new (domain,
990 "Object reference not set to an instance of an object");
991 obj = (MonoObject *)ex;
994 if (mono_object_isinst (obj, mono_defaults.exception_class)) {
995 mono_ex = (MonoException*)obj;
996 mono_ex->stack_trace = NULL;
1003 call_filter = arch_get_call_filter ();
1005 g_assert (jit_tls->end_of_stack);
1006 g_assert (jit_tls->abort_func);
1009 MonoContext ctx_cp = *ctx;
1010 if (mono_jit_trace_calls != NULL)
1011 g_print ("EXCEPTION handling: %s\n", mono_object_class (obj)->name);
1012 if (!mono_arch_handle_exception (&ctx_cp, obj, TRUE)) {
1013 if (mono_break_on_exc)
1015 mono_unhandled_exception (obj);
1020 MonoContext new_ctx;
1023 ji = mono_arch_find_jit_info (domain, jit_tls, &rji, &rji, ctx, &new_ctx,
1024 test_only ? &trace : NULL, &lmf, NULL, NULL);
1026 g_warning ("Exception inside function without unwind info");
1027 g_assert_not_reached ();
1030 if (ji != (gpointer)-1) {
1032 if (test_only && ji->method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE && mono_ex) {
1035 trace_ips = g_list_prepend (trace_ips, MONO_CONTEXT_GET_IP (ctx));
1037 if (!mono_ex->stack_trace)
1038 strace = g_strdup ("");
1040 strace = mono_string_to_utf8 (mono_ex->stack_trace);
1042 tmp = g_strdup_printf ("%s%s\n", strace, trace);
1045 mono_ex->stack_trace = mono_string_new (domain, tmp);
1050 if (ji->num_clauses) {
1053 g_assert (ji->clauses);
1055 for (i = 0; i < ji->num_clauses; i++) {
1056 MonoJitExceptionInfo *ei = &ji->clauses [i];
1058 if (ei->try_start < MONO_CONTEXT_GET_IP (ctx) &&
1059 MONO_CONTEXT_GET_IP (ctx) <= ei->try_end) {
1061 if ((ei->flags == MONO_EXCEPTION_CLAUSE_NONE &&
1062 mono_object_isinst (obj, mono_class_get (ji->method->klass->image, ei->data.token))) ||
1063 ((ei->flags == MONO_EXCEPTION_CLAUSE_FILTER &&
1064 call_filter (ctx, ei->data.filter, obj)))) {
1067 trace_ips = g_list_reverse (trace_ips);
1068 mono_ex->trace_ips = glist_to_array (trace_ips);
1070 g_list_free (trace_ips);
1074 // memcpy(ctx, &new_ctx, sizeof(new_ctx));
1075 if (mono_jit_trace_calls != NULL)
1076 g_print ("EXCEPTION: catch found at clause %d of %s - caught at %p with sp %p\n",
1077 i, mono_method_full_name (ji->method, TRUE),
1079 MONO_CONTEXT_GET_BP(ctx));
1080 MONO_CONTEXT_SET_IP (ctx, ei->handler_start);
1081 *((gpointer *)((char *)MONO_CONTEXT_GET_BP (ctx) + ji->exvar_offset)) = obj;
1086 if (!test_only && ei->try_start <= MONO_CONTEXT_GET_IP (ctx) &&
1087 MONO_CONTEXT_GET_IP (ctx) < ei->try_end &&
1088 (ei->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
1089 if (mono_jit_trace_calls != NULL)
1090 g_print ("EXCEPTION: finally clause %d of %s handled at: %p using sp: %p\n",
1091 i, mono_method_full_name (ji->method, TRUE),
1093 MONO_CONTEXT_GET_BP(ctx));
1094 call_filter (ctx, ei->handler_start, NULL);
1106 if ((ji == (gpointer)-1) || MONO_CONTEXT_GET_BP (ctx) >= jit_tls->end_of_stack) {
1109 jit_tls->abort_func (obj);
1110 g_assert_not_reached ();
1113 trace_ips = g_list_reverse (trace_ips);
1114 mono_ex->trace_ips = glist_to_array (trace_ips);
1116 g_list_free (trace_ips);
1122 g_assert_not_reached ();
1125 /*========================= End of Function ========================*/
1127 /*------------------------------------------------------------------*/
1129 /* Name - mono_arch_ip_from_context */
1131 /* Function - Return the instruction pointer from the context. */
1133 /* Parameters - sigctx - Saved processor state */
1135 /*------------------------------------------------------------------*/
1138 mono_arch_ip_from_context (void *sigctx)
1140 return context_get_ip (sigctx);