X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mono%2Fmini%2Fexceptions-s390.c;h=1aad39a1b33a70247bf2eb456682d3e336cc4cb0;hb=6644c191b8292d9a07227f182be9ce689c1848e2;hp=5a48d4ea39d331d145c03628802b6c7e3de9d9e1;hpb=48ebc4ea55d4858a6b3e10973add28a28bf985db;p=mono.git diff --git a/mono/mini/exceptions-s390.c b/mono/mini/exceptions-s390.c index 5a48d4ea39d..1aad39a1b33 100644 --- a/mono/mini/exceptions-s390.c +++ b/mono/mini/exceptions-s390.c @@ -20,24 +20,6 @@ /* D e f i n e s */ /*------------------------------------------------------------------*/ -#define MONO_CONTEXT_SET_IP(ctx,ip) \ - do { \ - (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip; \ - (ctx)->uc_mcontext.psw.addr = (unsigned long)ip; \ - } while (0); - -#define MONO_CONTEXT_SET_BP(ctx,bp) \ - do { \ - (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp; \ - (ctx)->uc_stack.ss_sp = (unsigned long)bp; \ - } while (0); - -#define MONO_CONTEXT_GET_IP(ctx) context_get_ip ((ctx)) -#define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15])) - -/* disable this for now */ -#undef MONO_USE_EXC_TABLES - #define S390_CALLFILTER_INTREGS S390_MINIMAL_STACK_SIZE #define S390_CALLFILTER_FLTREGS S390_CALLFILTER_INTREGS+(16*sizeof(gulong)) #define S390_CALLFILTER_ACCREGS S390_CALLFILTER_FLTREGS+(16*sizeof(gdouble)) @@ -45,11 +27,14 @@ #define S390_THROWSTACK_ACCPRM S390_MINIMAL_STACK_SIZE #define S390_THROWSTACK_FPCPRM S390_THROWSTACK_ACCPRM+sizeof(gpointer) -#define S390_THROWSTACK_INTREGS S390_THROWSTACK_FPCPRM+sizeof(gulong) +#define S390_THROWSTACK_RETHROW S390_THROWSTACK_FPCPRM+sizeof(gulong) +#define S390_THROWSTACK_INTREGS S390_THROWSTACK_RETHROW+sizeof(gboolean) #define S390_THROWSTACK_FLTREGS S390_THROWSTACK_INTREGS+(16*sizeof(gulong)) #define S390_THROWSTACK_ACCREGS S390_THROWSTACK_FLTREGS+(16*sizeof(gdouble)) #define S390_THROWSTACK_SIZE (S390_THROWSTACK_ACCREGS+(16*sizeof(gulong))) +#define SZ_THROW 384 + /*========================= End of Defines =========================*/ /*------------------------------------------------------------------*/ @@ -60,6 +45,7 @@ #include #include #include +#include #include #include @@ -74,50 +60,11 @@ /*========================= End of Includes ========================*/ -/*------------------------------------------------------------------*/ -/* T y p e d e f s */ -/*------------------------------------------------------------------*/ - -struct stack_frame -{ - void *next; - void *return_address; -}; - -#ifdef MONO_USE_EXC_TABLES - -/*************************************/ -/* STACK UNWINDING STUFF */ -/*************************************/ - -/* These definitions are from unwind-dw2.c in glibc 2.2.5 */ - -/* For x86 */ -#define DWARF_FRAME_REGISTERS 17 - -typedef struct frame_state -{ - void *cfa; - void *eh_ptr; - long cfa_offset; - long args_size; - long reg_or_offset[DWARF_FRAME_REGISTERS+1]; - unsigned short cfa_reg; - unsigned short retaddr_column; - char saved[DWARF_FRAME_REGISTERS+1]; -} frame_state; - -typedef struct frame_state * (*framesf) (void *, struct frame_state *); - -#endif - -/*========================= End of Typedefs ========================*/ - /*------------------------------------------------------------------*/ /* P r o t o t y p e s */ /*------------------------------------------------------------------*/ -gboolean mono_arch_handle_exception (MonoContext *ctx, +gboolean mono_arch_handle_exception (void *ctx, gpointer obj, gboolean test_only); @@ -127,79 +74,8 @@ gboolean mono_arch_handle_exception (MonoContext *ctx, /* G l o b a l V a r i a b l e s */ /*------------------------------------------------------------------*/ -#ifdef MONO_USE_EXC_TABLES - -static framesf frame_state_for = NULL; - -static gboolean inited = FALSE; - -typedef char ** (*get_backtrace_symbols_type) (void *__const *__array, int __size); - -static get_backtrace_symbols_type get_backtrace_symbols = NULL; - -#endif - /*====================== End of Global Variables ===================*/ -/*------------------------------------------------------------------*/ -/* */ -/* Name - context_get_ip */ -/* */ -/* Function - Extract the current instruction address from the */ -/* context. */ -/* */ -/*------------------------------------------------------------------*/ - -static inline gpointer -context_get_ip (MonoContext *ctx) -{ - gpointer ip; - - ip = (gpointer) ((gint32) (ctx->uc_mcontext.psw.addr) & 0x7fffffff); - return ip; -} - -/*========================= End of Function ========================*/ - -#ifdef MONO_USE_EXC_TABLES - -/*------------------------------------------------------------------*/ -/* */ -/* Name - init_frame_state_for */ -/* */ -/* Function - Load the __frame_state_for from libc. */ -/* There are two versions of __frame_state_for: one */ -/* in libgcc.a and the other in glibc.so. We need */ -/* the version from glibc. For more information, see:*/ -/* http://gcc.gnu.org/ml/gcc/2002-08/msg00192.html */ -/* */ -/*------------------------------------------------------------------*/ - -static void -init_frame_state_for (void) -{ - GModule *module; - - if ((module = g_module_open ("libc.so.6", G_MODULE_BIND_LAZY))) { - - if (!g_module_symbol (module, "__frame_state_for", (gpointer*)&frame_state_for)) - frame_state_for = NULL; - - if (!g_module_symbol (module, "backtrace_symbols", (gpointer*)&get_backtrace_symbols)) { - get_backtrace_symbols = NULL; - frame_state_for = NULL; - } - - g_module_close (module); - } - - inited = TRUE; -} - -/*========================= End of Function ========================*/ - -#endif - /*------------------------------------------------------------------*/ /* */ /* Name - mono_arch_has_unwind_info */ @@ -212,154 +88,14 @@ init_frame_state_for (void) gboolean mono_arch_has_unwind_info (gconstpointer addr) { -#if 0 - struct frame_state state_in; - struct frame_state *res; - - if (!inited) - init_frame_state_for (); - - if (!frame_state_for) - return FALSE; - - g_assert (method->addr); - - memset (&state_in, 0, sizeof (state_in)); - - /* offset 10 is just a guess, but it works for all methods tested */ - if ((res = frame_state_for ((char *)method->addr + 10, &state_in))) { - - if (res->saved [X86_EBX] != 1 || - res->saved [X86_EDI] != 1 || - res->saved [X86_EBP] != 1 || - res->saved [X86_ESI] != 1) { - return FALSE; - } - return TRUE; - } else { - return FALSE; - } -#else return FALSE; -#endif -} - -/*========================= End of Function ========================*/ - -/*------------------------------------------------------------------*/ -/* */ -/* Name - s390_unwind_native_frame */ -/* */ -/* Function - Use the context to unwind a stack frame. */ -/* */ -/*------------------------------------------------------------------*/ - -static MonoJitInfo * -s390_unwind_native_frame (MonoDomain *domain, MonoJitTlsData *jit_tls, - struct sigcontext *ctx, struct sigcontext *new_ctx, - MonoLMF *lmf, char **trace) -{ -#if 0 - struct stack_frame *frame; - gpointer max_stack; - MonoJitInfo *ji; - struct frame_state state_in; - struct frame_state *res; - - if (trace) - *trace = NULL; - - if (!inited) - init_frame_state_for (); - - if (!frame_state_for) - return FALSE; - - frame = MONO_CONTEXT_GET_BP (ctx); - - max_stack = lmf && lmf->method ? lmf : jit_tls->end_of_stack; - - *new_ctx = *ctx; - - memset (&state_in, 0, sizeof (state_in)); - - while ((gpointer)frame->next < (gpointer)max_stack) { - gpointer ip, addr = frame->return_address; - void *cfa; - char *tmp, **symbols; - - if (trace) { - ip = MONO_CONTEXT_GET_IP (new_ctx); - symbols = get_backtrace_symbols (&ip, 1); - if (*trace) - tmp = g_strdup_printf ("%s\nin (unmanaged) %s", *trace, symbols [0]); - else - tmp = g_strdup_printf ("in (unmanaged) %s", symbols [0]); - - free (symbols); - g_free (*trace); - *trace = tmp; - } - - if ((res = frame_state_for (addr, &state_in))) { - int i; - - cfa = (gint8*) (get_sigcontext_reg (new_ctx, res->cfa_reg) + res->cfa_offset); - frame = (struct stack_frame *)((gint8*)cfa - 8); - for (i = 0; i < DWARF_FRAME_REGISTERS + 1; i++) { - int how = res->saved[i]; - long val; - g_assert ((how == 0) || (how == 1)); - - if (how == 1) { - val = * (long*) ((gint8*)cfa + res->reg_or_offset[i]); - set_sigcontext_reg (new_ctx, i, val); - } - } - new_ctx->SC_ESP = (long)cfa; - - if (res->saved [X86_EBX] == 1 && - res->saved [X86_EDI] == 1 && - res->saved [X86_EBP] == 1 && - res->saved [X86_ESI] == 1 && - (ji = mono_jit_info_table_find (domain, frame->return_address))) { - //printf ("FRAME CFA %s\n", mono_method_full_name (ji->method, TRUE)); - return ji; - } - - } else { -// printf ("FRAME %p %p %p\n", -// frame, MONO_CONTEXT_GET_IP (new_ctx), -// mono_jit_info_table_find (domain, MONO_CONTEXT_GET_IP (new_ctx))); - - MONO_CONTEXT_SET_IP (new_ctx, frame->return_address); - frame = frame->next; - MONO_CONTEXT_SET_BP (new_ctx, frame); - - /* stop if !frame or when we detect an unexpected managed frame */ - if (!frame || mono_jit_info_table_find (domain, frame->return_address)) { - if (trace) { - g_free (*trace); - *trace = NULL; - } - return NULL; - } - } - } - - if (trace) { - g_free (*trace); - *trace = NULL; - } -#endif - return NULL; } /*========================= End of Function ========================*/ /*------------------------------------------------------------------*/ /* */ -/* Name - arch_get_call_filter */ +/* Name - mono_arch_get_call_filter */ /* */ /* Function - Return a pointer to a method which calls an */ /* exception filter. We also use this function to */ @@ -368,10 +104,10 @@ s390_unwind_native_frame (MonoDomain *domain, MonoJitTlsData *jit_tls, /* */ /*------------------------------------------------------------------*/ -static gpointer -arch_get_call_filter (void) +gpointer +mono_arch_get_call_filter (void) { - static guint8 start [256]; + static guint8 *start; static int inited = 0; guint8 *code; int alloc_size, pos, i; @@ -381,7 +117,7 @@ arch_get_call_filter (void) inited = 1; /* call_filter (MonoContext *ctx, unsigned long eip, gpointer exc) */ - code = start; + code = start = mono_global_codeman_reserve (512); s390_stm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET); s390_lr (code, s390_r14, STK_BASE); @@ -397,46 +133,71 @@ arch_get_call_filter (void) /*------------------------------------------------------*/ /* save floating point registers on stack */ /*------------------------------------------------------*/ - s390_stm (code, s390_r0, s390_r13, STK_BASE, S390_CALLFILTER_INTREGS); - pos = S390_CALLFILTER_FLTREGS; - for (i = 0; i < 16; ++i) { - s390_std (code, i, 0, STK_BASE, pos); - pos += sizeof (gdouble); - } +// pos = S390_CALLFILTER_FLTREGS; +// for (i = 0; i < 16; ++i) { +// s390_std (code, i, 0, STK_BASE, pos); +// pos += sizeof (gdouble); +// } /*------------------------------------------------------*/ /* save access registers on stack */ /*------------------------------------------------------*/ - s390_stam (code, s390_r0, s390_r15, STK_BASE, S390_CALLFILTER_ACCREGS); +// s390_stam (code, s390_a0, s390_a15, STK_BASE, S390_CALLFILTER_ACCREGS); + /*------------------------------------------------------*/ + /* Get A(Context) */ + /*------------------------------------------------------*/ s390_lr (code, s390_r13, s390_r2); - s390_lr (code, s390_r14, s390_r3); + + /*------------------------------------------------------*/ + /* Get A(Handler Entry Point) */ + /*------------------------------------------------------*/ + s390_lr (code, s390_r0, s390_r3); + + /*------------------------------------------------------*/ + /* Set parameter register with Exception */ + /*------------------------------------------------------*/ s390_lr (code, s390_r2, s390_r4); - s390_lm (code, s390_r0, s390_r1, s390_r13, G_STRUCT_OFFSET(MonoContext, uc_mcontext.gregs)); - s390_lm (code, s390_r3, s390_r12, s390_r13, G_STRUCT_OFFSET(MonoContext, uc_mcontext.gregs[2])); + /*------------------------------------------------------*/ + /* Load all registers with values from the context */ + /*------------------------------------------------------*/ + s390_lm (code, s390_r3, s390_r12, s390_r13, + G_STRUCT_OFFSET(MonoContext, uc_mcontext.gregs[3])); pos = G_STRUCT_OFFSET(MonoContext, uc_mcontext.fpregs.fprs[0]); for (i = 0; i < 16; ++i) { s390_ld (code, i, 0, s390_r13, pos); pos += sizeof(gdouble); } + + /*------------------------------------------------------*/ + /* Point at the copied stack frame and call the filter */ + /*------------------------------------------------------*/ + s390_lr (code, s390_r1, s390_r0); + s390_basr (code, s390_r14, s390_r1); - s390_basr (code, s390_r14, s390_r14); + /*------------------------------------------------------*/ + /* Save return value */ + /*------------------------------------------------------*/ + s390_lr (code, s390_r14, s390_r2); - /* restore all the regs from the stack */ + /*------------------------------------------------------*/ + /* Restore all the regs from the stack */ + /*------------------------------------------------------*/ s390_lm (code, s390_r0, s390_r13, STK_BASE, S390_CALLFILTER_INTREGS); - pos = S390_CALLFILTER_FLTREGS; - for (i = 0; i < 16; ++i) { - s390_ld (code, i, 0, STK_BASE, pos); - pos += sizeof (gdouble); - } - - s390_lam (code, s390_r0, s390_r15, STK_BASE, S390_CALLFILTER_ACCREGS); +// pos = S390_CALLFILTER_FLTREGS; +// for (i = 0; i < 16; ++i) { +// s390_ld (code, i, 0, STK_BASE, pos); +// pos += sizeof (gdouble); +// } + + s390_lr (code, s390_r2, s390_r14); +// s390_lam (code, s390_a0, s390_a15, STK_BASE, S390_CALLFILTER_ACCREGS); s390_ahi (code, s390_r15, alloc_size); s390_lm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET); s390_br (code, s390_r14); - g_assert ((code - start) < sizeof(start)); + g_assert ((code - start) < SZ_THROW); return start; } @@ -444,18 +205,17 @@ arch_get_call_filter (void) /*------------------------------------------------------------------*/ /* */ -/* Name - arch_get_restore_context */ +/* Name - throw_exception. */ /* */ -/* Function - Return a pointer to a method which restores a */ -/* previously saved context. */ +/* Function - Raise an exception based on the parameters passed.*/ /* */ /*------------------------------------------------------------------*/ static void throw_exception (MonoObject *exc, unsigned long ip, unsigned long sp, - gulong *int_regs, gdouble *fp_regs, gulong *acc_regs, guint fpc) + gulong *int_regs, gdouble *fp_regs, gulong *acc_regs, + guint fpc, gboolean rethrow) { - static void (*restore_context) (MonoContext *); MonoContext ctx; int iReg; @@ -477,6 +237,11 @@ throw_exception (MonoObject *exc, unsigned long ip, unsigned long sp, MONO_CONTEXT_SET_BP (&ctx, sp); MONO_CONTEXT_SET_IP (&ctx, ip); + if (mono_object_isinst (exc, mono_defaults.exception_class)) { + MonoException *mono_ex = (MonoException*)exc; + if (!rethrow) + mono_ex->stack_trace = NULL; + } mono_arch_handle_exception (&ctx, exc, FALSE); setcontext(&ctx); @@ -487,7 +252,7 @@ throw_exception (MonoObject *exc, unsigned long ip, unsigned long sp, /*------------------------------------------------------------------*/ /* */ -/* Name - arch_get_throw_exception_generic */ +/* Name - get_throw_exception_generic */ /* */ /* Function - Return a function pointer which can be used to */ /* raise exceptions. The returned function has the */ @@ -498,7 +263,8 @@ throw_exception (MonoObject *exc, unsigned long ip, unsigned long sp, /*------------------------------------------------------------------*/ static gpointer -mono_arch_get_throw_exception_generic (guint8 *start, int size, int by_name) +get_throw_exception_generic (guint8 *start, int size, + int by_name, gboolean rethrow) { guint8 *code; int alloc_size, pos, i, offset; @@ -558,6 +324,8 @@ mono_arch_get_throw_exception_generic (guint8 *start, int size, int by_name) s390_la (code, s390_r7, 0, STK_BASE, S390_THROWSTACK_ACCREGS); s390_st (code, s390_r7, 0, STK_BASE, S390_THROWSTACK_ACCPRM); s390_stfpc(code, STK_BASE, S390_THROWSTACK_FPCPRM); + s390_lhi (code, s390_r7, rethrow); + s390_st (code, s390_r7, 0, STK_BASE, S390_THROWSTACK_RETHROW); offset = (guint32) S390_RELATIVE(throw_exception, code); s390_brasl(code, s390_r14, offset); /* we should never reach this breakpoint */ @@ -582,12 +350,13 @@ mono_arch_get_throw_exception_generic (guint8 *start, int size, int by_name) gpointer mono_arch_get_throw_exception (void) { - static guint8 start [128]; + static guint8 *start; static int inited = 0; if (inited) return start; - mono_arch_get_throw_exception_generic (start, sizeof (start), FALSE); + start = mono_global_codeman_reserve (SZ_THROW); + get_throw_exception_generic (start, SZ_THROW, FALSE, FALSE); inited = 1; return start; } @@ -596,56 +365,55 @@ mono_arch_get_throw_exception (void) /*------------------------------------------------------------------*/ /* */ -/* Name - arch_get_throw_exception_by_name */ +/* Name - arch_get_rethrow_exception */ /* */ /* Function - Return a function pointer which can be used to */ -/* raise corlib exceptions. The return function has */ -/* the following signature: */ -/* void (*func) (char *exc_name); */ +/* raise exceptions. The returned function has the */ +/* following signature: */ +/* void (*func) (MonoException *exc); */ /* */ /*------------------------------------------------------------------*/ gpointer -mono_arch_get_throw_exception_by_name (void) +mono_arch_get_rethrow_exception (void) { - static guint8 start [160]; + static guint8 *start; static int inited = 0; if (inited) return start; - mono_arch_get_throw_exception_generic (start, sizeof (start), TRUE); + start = mono_global_codeman_reserve (SZ_THROW); + get_throw_exception_generic (start, SZ_THROW, FALSE, TRUE); inited = 1; return start; -} +} /*========================= End of Function ========================*/ /*------------------------------------------------------------------*/ /* */ -/* Name - glist_to_array */ +/* Name - arch_get_throw_exception_by_name */ /* */ -/* Function - Convert a list to a mono array. */ +/* Function - Return a function pointer which can be used to */ +/* raise corlib exceptions. The return function has */ +/* the following signature: */ +/* void (*func) (char *exc_name); */ /* */ /*------------------------------------------------------------------*/ -static MonoArray * -glist_to_array (GList *list) +gpointer +mono_arch_get_throw_exception_by_name (void) { - 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); + static guint8 *start; + static int inited = 0; - return res; -} + if (inited) + return start; + start = mono_global_codeman_reserve (SZ_THROW); + get_throw_exception_generic (start, SZ_THROW, TRUE, FALSE); + inited = 1; + return start; +} /*========================= End of Function ========================*/ @@ -667,16 +435,20 @@ glist_to_array (GList *list) MonoJitInfo * mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls, - MonoJitInfo *res, MonoContext *ctx, + MonoJitInfo *res, MonoJitInfo *prev_ji, MonoContext *ctx, MonoContext *new_ctx, char **trace, MonoLMF **lmf, int *native_offset, gboolean *managed) { MonoJitInfo *ji; gpointer ip = MONO_CONTEXT_GET_IP (ctx); - unsigned long *ptr; - char *p; + MonoS390StackFrame *sframe; - ji = mono_jit_info_table_find (domain, ip); + if (prev_ji && + (ip >= prev_ji->code_start && + ((guint8 *) ip <= ((guint8 *) prev_ji->code_start) + prev_ji->code_size))) + ji = prev_ji; + else + ji = mono_jit_info_table_find (domain, ip); if (trace) *trace = NULL; @@ -688,13 +460,11 @@ mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls, *managed = FALSE; if (ji != NULL) { - char *source_location, *tmpaddr, *fname; - gint32 address, iloffset; - int offset; + gint32 address; *new_ctx = *ctx; - if (*lmf && (MONO_CONTEXT_GET_BP (ctx) >= (gpointer)(*lmf)->ebp)) { + if (*lmf && (MONO_CONTEXT_GET_SP (ctx) >= (gpointer)(*lmf)->ebp)) { /* remove any unused lmf */ *lmf = (*lmf)->previous_lmf; } @@ -708,55 +478,12 @@ mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls, if (!ji->method->wrapper_type) *managed = TRUE; - if (trace) { - source_location = mono_debug_source_location_from_address (ji->method, address, NULL, domain); - iloffset = mono_debug_il_offset_from_address (ji->method, address, domain); - - if (iloffset < 0) - tmpaddr = g_strdup_printf ("<0x%05x>", address); - 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); - } -#if 0 - offset = -1; - /* restore caller saved registers */ - if (ji->used_regs & X86_EBX_MASK) { - new_ctx->SC_EBX = *((int *)ctx->SC_EBP + offset); - offset--; - } - if (ji->used_regs & X86_EDI_MASK) { - new_ctx->SC_EDI = *((int *)ctx->SC_EBP + offset); - offset--; - } - if (ji->used_regs & X86_ESI_MASK) { - new_ctx->SC_ESI = *((int *)ctx->SC_EBP + offset); - } - - new_ctx->SC_ESP = ctx->SC_EBP; - /* we substract 1, so that the IP points into the call instruction */ - new_ctx->SC_EIP = *((int *)ctx->SC_EBP + 1) - 1; - new_ctx->SC_EBP = *((int *)ctx->SC_EBP); -#endif - MONO_CONTEXT_SET_BP (new_ctx, MONO_CONTEXT_GET_BP (ctx)); - MONO_CONTEXT_SET_IP (new_ctx, MONO_CONTEXT_GET_IP (ctx)); - *res = *ji; - return res; -#ifdef MONO_USE_EXC_TABLES - } else if ((ji = s390_unwind_native_frame (domain, jit_tls, ctx, new_ctx, *lmf, trace))) { - *res = *ji; - return res; -#endif + sframe = (MonoS390StackFrame *) MONO_CONTEXT_GET_SP (ctx); + MONO_CONTEXT_SET_BP (new_ctx, sframe->prev); + sframe = (MonoS390StackFrame *) sframe->prev; + MONO_CONTEXT_SET_IP (new_ctx, sframe->return_address); + memcpy (&new_ctx->uc_mcontext.gregs[6], sframe->regs, (8*sizeof(gint32))); + return ji; } else if (*lmf) { *new_ctx = *ctx; @@ -764,32 +491,20 @@ mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls, if (!(*lmf)->method) return (gpointer)-1; - if (trace) - *trace = g_strdup_printf ("in (unmanaged) %s", mono_method_full_name ((*lmf)->method, TRUE)); - if ((ji = mono_jit_info_table_find (domain, (gpointer)(*lmf)->eip))) { - *res = *ji; } else { memset (res, 0, sizeof (MonoJitInfo)); res->method = (*lmf)->method; } -#if 0 - new_ctx->SC_ESI = (*lmf)->esi; - new_ctx->SC_EDI = (*lmf)->edi; - new_ctx->SC_EBX = (*lmf)->ebx; - new_ctx->SC_EBP = (*lmf)->ebp; - new_ctx->SC_EIP = (*lmf)->eip; - /* the lmf is always stored on the stack, so the following - * expression points to a stack location which can be used as ESP */ - new_ctx->SC_ESP = (unsigned long)&((*lmf)->eip); -#endif - MONO_CONTEXT_SET_BP (new_ctx, MONO_CONTEXT_GET_BP (ctx)); - MONO_CONTEXT_SET_IP (new_ctx, MONO_CONTEXT_GET_IP (ctx)); + memcpy(new_ctx->uc_mcontext.gregs, (*lmf)->gregs, sizeof((*lmf)->gregs)); + memcpy(new_ctx->uc_mcontext.fpregs.fprs, (*lmf)->fregs, sizeof((*lmf)->fregs)); + + MONO_CONTEXT_SET_BP (new_ctx, (*lmf)->ebp); + MONO_CONTEXT_SET_IP (new_ctx, (*lmf)->eip); *lmf = (*lmf)->previous_lmf; - return res; - + return ji ? ji : res; } return NULL; @@ -799,308 +514,122 @@ mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls, /*------------------------------------------------------------------*/ /* */ -/* Name - ves_icall_get_trace */ +/* Name - mono_arch_handle_exception */ /* */ -/* Function - */ +/* Function - Handle an exception raised by the JIT code. */ +/* */ +/* Parameters - ctx - Saved processor state */ +/* obj - The exception object */ +/* test_only - Only test if the exception is caught, */ +/* but don't call handlers */ /* */ /*------------------------------------------------------------------*/ -MonoArray * -ves_icall_get_trace (MonoException *exc, gint32 skip, MonoBoolean need_file_info) +gboolean +mono_arch_handle_exception (void *uc, gpointer obj, gboolean test_only) { - MonoDomain *domain = mono_domain_get (); - MonoArray *res; - MonoArray *ta = exc->trace_ips; - int i, len; - - len = mono_array_length (ta); - - res = mono_array_new (domain, mono_defaults.stack_frame_class, len > skip ? len - skip : 0); - - for (i = skip; i < len; i++) { - MonoJitInfo *ji; - MonoStackFrame *sf = (MonoStackFrame *)mono_object_new (domain, mono_defaults.stack_frame_class); - gpointer ip = mono_array_get (ta, gpointer, i); - - ji = mono_jit_info_table_find (domain, ip); - g_assert (ji != NULL); - - 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); - - if (need_file_info) { - gchar *filename; - - filename = mono_debug_source_location_from_address (ji->method, sf->native_offset, &sf->line, domain); - - sf->filename = filename? mono_string_new (domain, filename): NULL; - sf->column = 0; - - g_free (filename); - } - - mono_array_set (res, gpointer, i, sf); - } - - return res; + return mono_handle_exception (uc, obj, mono_arch_ip_from_context(uc), test_only); } /*========================= End of Function ========================*/ /*------------------------------------------------------------------*/ /* */ -/* Name - mono_jit_walk_stack */ +/* Name - mono_arch_ip_from_context */ +/* */ +/* Function - Return the instruction pointer from the context. */ /* */ -/* Function - */ +/* Parameters - sigctx - Saved processor state */ /* */ /*------------------------------------------------------------------*/ -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_CONTEXT_SET_IP (&ctx, __builtin_return_address (0)); - MONO_CONTEXT_SET_BP (&ctx, __builtin_frame_address (1)); - - while (MONO_CONTEXT_GET_BP (&ctx) < jit_tls->end_of_stack) { - - ji = mono_arch_find_jit_info (domain, jit_tls, &rji, &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; - } +gpointer +mono_arch_ip_from_context (void *sigctx) +{ + return context_get_ip (sigctx); } + /*========================= End of Function ========================*/ /*------------------------------------------------------------------*/ /* */ -/* Name - ves_icall_get_frame_info */ +/* Name - mono_arch_get_restore_context */ /* */ -/* Function - */ +/* Function - Return the address of the routine that will rest- */ +/* ore the context. */ /* */ /*------------------------------------------------------------------*/ -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) +gpointer +mono_arch_get_restore_context () { - MonoDomain *domain = mono_domain_get (); - MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id); - MonoLMF *lmf = jit_tls->lmf; - MonoJitInfo *ji, rji; - MonoContext ctx, new_ctx; - - MONO_CONTEXT_SET_IP (&ctx, ves_icall_get_frame_info); - MONO_CONTEXT_SET_BP (&ctx, __builtin_frame_address (0)); - - skip++; - - do { - ji = mono_arch_find_jit_info (domain, jit_tls, &rji, &ctx, &new_ctx, NULL, &lmf, native_offset, NULL); - - ctx = new_ctx; - - if (!ji || ji == (gpointer)-1 || MONO_CONTEXT_GET_BP (&ctx) >= jit_tls->end_of_stack) - return FALSE; - - /* skip all wrappers ??*/ - if (ji->method->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE || - ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK || - ji->method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE) - continue; - - skip--; - - } while (skip >= 0); - - *method = mono_method_get_object (domain, ji->method, NULL); - *iloffset = mono_debug_il_offset_from_address (ji->method, *native_offset, domain); - - if (need_file_info) { - gchar *filename; - - filename = mono_debug_source_location_from_address (ji->method, *native_offset, line, domain); - - *file = filename? mono_string_new (domain, filename): NULL; - *column = 0; - - g_free (filename); - } - - return TRUE; + return setcontext; } + /*========================= End of Function ========================*/ /*------------------------------------------------------------------*/ /* */ -/* Name - mono_arch_handle_exception */ -/* */ -/* Function - Handle an exception raised by the JIT code. */ -/* */ -/* Parameters - ctx - Saved processor state */ -/* obj - The exception object */ -/* test_only - Only test if the exception is caught, */ -/* but don't call handlers */ +/* Name - mono_arch_is_int_overflow */ /* */ +/* Function - Inspect the code that raised the SIGFPE signal */ +/* to see if the DivideByZero or Arithmetic exception*/ +/* should be raised. */ +/* */ /*------------------------------------------------------------------*/ gboolean -mono_arch_handle_exception (MonoContext *ctx, gpointer obj, gboolean test_only) +mono_arch_is_int_overflow (void *uc, void *info) { - MonoDomain *domain = mono_domain_get (); - MonoJitInfo *ji, rji; - static int (*call_filter) (MonoContext *, gpointer, gpointer) = NULL; - MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id); - MonoLMF *lmf = jit_tls->lmf; - GList *trace_ips = NULL; - MonoException *mono_ex; - - 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; - } else { - mono_ex = NULL; - } - - - if (!call_filter) - call_filter = arch_get_call_filter (); - - 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_arch_handle_exception (&ctx_cp, obj, TRUE)) { - if (mono_break_on_exc) - G_BREAKPOINT (); - mono_unhandled_exception (obj); - } - } - - while (1) { - MonoContext new_ctx; - char *trace = NULL; - - ji = mono_arch_find_jit_info (domain, jit_tls, &rji, ctx, &new_ctx, - test_only ? &trace : NULL, &lmf, NULL, NULL); - if (!ji) { - g_warning ("Exception inside function without unwind info"); - g_assert_not_reached (); - } - - if (ji != (gpointer)-1) { - - if (test_only && ji->method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE && mono_ex) { - char *tmp, *strace; - - 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); + MonoContext *ctx; + guint8 *code; + guint32 *operand; + gboolean arithExc = TRUE; + gint regNo, + offset; + + ctx = (MonoContext *) uc; + code = (guint8 *) ((siginfo_t *)info)->si_addr; + /*----------------------------------------------------------*/ + /* Divide operations are the only ones that will give the */ + /* divide by zero exception so just check for these ops. */ + /*----------------------------------------------------------*/ + switch (code[0]) { + case 0x1d : /* Divide Register */ + regNo = code[1] & 0x0f; + if (ctx->uc_mcontext.gregs[regNo] == 0) + arithExc = FALSE; + break; + case 0x5d : /* Divide */ + regNo = (code[2] & 0xf0 >> 8); + offset = *((guint16 *) code+2) & 0x0fff; + operand = (guint32*)(ctx->uc_mcontext.gregs[regNo] + offset); + if (*operand == 0) + arithExc = FALSE; + break; + case 0xb9 : /* Divide logical Register? */ + if (code[1] == 0x97) { + regNo = (code[2] & 0xf0 >> 8); + if (ctx->uc_mcontext.gregs[regNo] == 0) + arithExc = FALSE; } - - if (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 && - 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, obj)))) { - if (test_only) { - if (mono_ex) - mono_ex->trace_ips = glist_to_array (trace_ips); - g_list_free (trace_ips); - g_free (trace); - return TRUE; - } - if (mono_jit_trace_calls != NULL) - 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); - *((gpointer *)((char *)MONO_CONTEXT_GET_BP (ctx) + ji->exvar_offset)) = obj; - jit_tls->lmf = lmf; - g_free (trace); - 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) - g_print ("EXCEPTION: finally clause %d of %s\n", i, mono_method_full_name (ji->method, TRUE)); - call_filter (ctx, ei->handler_start, NULL); - } - - } - } - } - } - - g_free (trace); - - *ctx = new_ctx; - - if ((ji == (gpointer)-1) || MONO_CONTEXT_GET_BP (ctx) >= jit_tls->end_of_stack) { - if (!test_only) { - jit_tls->lmf = lmf; - 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; + break; + case 0xe3 : /* Divide logical? */ + if (code[1] == 0x97) { + regNo = (code[2] & 0xf0 >> 8); + offset = *((guint32 *) code+1) & 0x000fffff; + operand = (guint32*)(ctx->uc_mcontext.gregs[regNo] + offset); + if (*operand == 0) + arithExc = FALSE; } - } + break; + default: + arithExc = TRUE; } - - g_assert_not_reached (); + ctx->uc_mcontext.psw.addr = (guint32)code; + return (arithExc); } /*========================= End of Function ========================*/