#define SZ_THROW 384
+#define setup_context(ctx)
+
/*========================= End of Defines =========================*/
/*------------------------------------------------------------------*/
/*------------------------------------------------------------------*/
gboolean mono_arch_handle_exception (void *ctx,
- gpointer obj,
- gboolean test_only);
+ gpointer obj);
/*========================= End of Prototypes ======================*/
typedef enum {
by_none,
- by_name,
by_token
} throwType;
/*====================== End of Global Variables ===================*/
-/*------------------------------------------------------------------*/
-/* */
-/* Name - mono_arch_has_unwind_info */
-/* */
-/* Function - Tests if a function has a DWARF exception table */
-/* that is able to restore all caller saved registers*/
-/* */
-/*------------------------------------------------------------------*/
-
-gboolean
-mono_arch_has_unwind_info (gconstpointer addr)
-{
- return FALSE;
-}
-
-/*========================= End of Function ========================*/
-
/*------------------------------------------------------------------*/
/* */
/* Name - mono_arch_get_call_filter */
static int inited = 0;
guint8 *code;
int alloc_size, pos, i;
+ GSList *unwind_ops = NULL;
+ MonoJumpInfo *ji = NULL;
g_assert (!aot);
- if (info)
- *info = NULL;
if (inited)
return start;
s390_ld (code, i, 0, s390_r13, pos);
pos += sizeof(gdouble);
}
-
+
+#if 0
+ /*------------------------------------------------------*/
+ /* We need to preserve current SP before calling filter */
+ /* with SP from the context */
+ /*------------------------------------------------------*/
+ s390_lgr (code, s390_r14, STK_BASE);
+ s390_lg (code, STK_BASE, 0, s390_r13,
+ G_STRUCT_OFFSET(MonoContext, uc_mcontext.gregs[15]));
+ s390_lgr (code, s390_r13, s390_r14);
+#endif
+
/*------------------------------------------------------*/
/* Go call filter */
/*------------------------------------------------------*/
/*------------------------------------------------------*/
s390_lgr (code, s390_r14, s390_r2);
+#if 0
+ /*------------------------------------------------------*/
+ /* Reload our stack register with value saved in context*/
+ /*------------------------------------------------------*/
+ s390_lgr (code, STK_BASE, s390_r13);
+#endif
+
/*------------------------------------------------------*/
/* Restore all the regs from the stack */
/*------------------------------------------------------*/
s390_br (code, s390_r14);
g_assert ((code - start) < SZ_THROW);
+
+ if (info)
+ *info = mono_tramp_info_create ("call_filter",
+ start, code - start, ji,
+ unwind_ops);
+
return start;
}
{
MonoContext ctx;
int iReg;
- static void (*restore_context) (MonoContext *);
- if (!restore_context)
- restore_context = mono_get_restore_context();
-
memset(&ctx, 0, sizeof(ctx));
- getcontext(&ctx);
+ setup_context(&ctx);
/* adjust eip so that it point into the call instruction */
ip -= 2;
if (!rethrow)
mono_ex->stack_trace = NULL;
}
- mono_arch_handle_exception (&ctx, exc, FALSE);
- restore_context(&ctx);
+// mono_arch_handle_exception (&ctx, exc, FALSE);
+ mono_handle_exception (&ctx, exc);
+ mono_restore_context(&ctx);
g_assert_not_reached ();
}
/*------------------------------------------------------------------*/
static gpointer
-get_throw_exception_generic (guint8 *start, int size,
- throwType type, gboolean rethrow)
+mono_arch_get_throw_exception_generic (int size, MonoTrampInfo **info,
+ int corlib, gboolean rethrow, gboolean aot)
{
- guint8 *code;
+ guint8 *code, *start;
int alloc_size, pos, i;
+ MonoJumpInfo *ji = NULL;
+ GSList *unwind_ops = NULL;
- code = start;
+ code = start = mono_global_codeman_reserve(size);
s390_stmg (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
alloc_size = S390_ALIGN(S390_THROWSTACK_SIZE, S390_STACK_ALIGNMENT);
s390_lgr (code, s390_r14, STK_BASE);
s390_aghi (code, STK_BASE, -alloc_size);
s390_stg (code, s390_r14, 0, STK_BASE, 0);
- switch (type) {
- case by_name :
- s390_lgr (code, s390_r4, s390_r2);
- s390_lg (code, s390_r3, 0, s390_r2, G_STRUCT_OFFSET(MonoException, object));
- s390_basr (code, s390_r13, 0);
- s390_j (code, 10);
- s390_llong(code, mono_defaults.corlib);
- s390_llong(code, mono_exception_from_name);
- s390_lg (code, s390_r3, 0, s390_r3, G_STRUCT_OFFSET(MonoVTable, klass));
- s390_lg (code, s390_r2, 0, s390_r13, 4);
- s390_lg (code, s390_r1, 0, s390_r13, 12);
- s390_lg (code, s390_r4, 0, s390_r3, G_STRUCT_OFFSET(MonoClass, name));
- s390_lg (code, s390_r3, 0, s390_r3, G_STRUCT_OFFSET(MonoClass, name_space));
- s390_basr (code, s390_r14, s390_r1);
- break;
- case by_token :
- s390_lgr (code, s390_r3, s390_r2);
+ s390_lgr (code, s390_r3, s390_r2);
+ if (corlib) {
s390_basr (code, s390_r13, 0);
s390_j (code, 10);
s390_llong(code, mono_defaults.exception_class->image);
s390_lg (code, s390_r2, 0, s390_r13, 4);
s390_lg (code, s390_r1, 0, s390_r13, 12);
s390_basr (code, s390_r14, s390_r1);
- break;
- case by_none :
- break;
}
+
/*------------------------------------------------------*/
/* save the general registers on the stack */
/*------------------------------------------------------*/
/* we should never reach this breakpoint */
s390_break (code);
g_assert ((code - start) < size);
+
+ if (info)
+ *info = mono_tramp_info_create (corlib ? "throw_corlib_exception"
+ : (rethrow ? "rethrow_exception"
+ : "throw_exception"),
+ start, code - start, ji, unwind_ops);
+
return start;
}
gpointer
mono_arch_get_throw_exception (MonoTrampInfo **info, gboolean aot)
{
- static guint8 *start;
- static int inited = 0;
g_assert (!aot);
if (info)
*info = NULL;
- if (inited)
- return start;
- start = mono_global_codeman_reserve (SZ_THROW);
- get_throw_exception_generic (start, SZ_THROW, by_none, FALSE);
- inited = 1;
- return start;
+ return (mono_arch_get_throw_exception_generic (SZ_THROW, info, FALSE, FALSE, aot));
}
/*========================= End of Function ========================*/
gpointer
mono_arch_get_rethrow_exception (MonoTrampInfo **info, gboolean aot)
{
- static guint8 *start;
- static int inited = 0;
-
g_assert (!aot);
if (info)
*info = NULL;
- if (inited)
- return start;
- start = mono_global_codeman_reserve (SZ_THROW);
- get_throw_exception_generic (start, SZ_THROW, FALSE, TRUE);
- inited = 1;
- return start;
+ return (mono_arch_get_throw_exception_generic (SZ_THROW, info, FALSE, FALSE, aot));
}
/*========================= End of Function ========================*/
gpointer
mono_arch_get_throw_corlib_exception (MonoTrampInfo **info, gboolean aot)
{
- static guint8 *start;
- static int inited = 0;
-
g_assert (!aot);
if (info)
*info = NULL;
- if (inited)
- return start;
- start = mono_global_codeman_reserve (SZ_THROW);
- get_throw_exception_generic (start, SZ_THROW, by_token, FALSE);
- inited = 1;
- return start;
-}
-
-/*========================= End of Function ========================*/
-
-/*------------------------------------------------------------------*/
-/* */
-/* Name - arch_get_throw_exception_by_name */
-/* */
-/* 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); */
-/* */
-/*------------------------------------------------------------------*/
-
-gpointer
-mono_arch_get_throw_exception_by_name (void)
-{
- static guint8 *start;
- static int inited = 0;
-
- if (inited)
- return start;
- start = mono_global_codeman_reserve (SZ_THROW);
- get_throw_exception_generic (start, SZ_THROW, by_name, FALSE);
- inited = 1;
- return start;
+ return (mono_arch_get_throw_exception_generic (SZ_THROW, info, TRUE, FALSE, aot));
}
/*========================= End of Function ========================*/
/* */
/* Name - mono_arch_find_jit_info */
/* */
-/* Function - This function is used to gather information from */
-/* @ctx. It returns the MonoJitInfo of the corres- */
-/* ponding 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 returns the IP off- */
-/* set from the start of the function or -1 if that */
-/* information is not available. */
+/* Function - See exceptions-amd64.c for docs. */
/* */
/*------------------------------------------------------------------*/
-MonoJitInfo *
+gboolean
mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls,
- MonoJitInfo *res, MonoJitInfo *prev_ji, MonoContext *ctx,
- MonoContext *new_ctx, MonoLMF **lmf, gboolean *managed)
+ MonoJitInfo *ji, MonoContext *ctx,
+ MonoContext *new_ctx, MonoLMF **lmf,
+ mgreg_t **save_locations,
+ StackFrameInfo *frame)
{
- MonoJitInfo *ji;
gpointer ip = (gpointer) MONO_CONTEXT_GET_IP (ctx);
MonoS390StackFrame *sframe;
- if (prev_ji &&
- (ip >= prev_ji->code_start &&
- ((guint8 *) ip <= ((guint8 *) prev_ji->code_start) + prev_ji->code_size)))
- ji = prev_ji;
- else
- ji = mini_jit_info_table_find (domain, ip, NULL);
+ memset (frame, 0, sizeof (StackFrameInfo));
+ frame->ji = ji;
- if (managed)
- *managed = FALSE;
+ *new_ctx = *ctx;
if (ji != NULL) {
gint64 address;
+ guint8 *cfa;
+ guint32 unwind_info_len;
+ guint8 *unwind_info;
+ mgreg_t regs[16];
- *new_ctx = *ctx;
+ frame->type = FRAME_TYPE_MANAGED;
- if (*lmf && (MONO_CONTEXT_GET_SP (ctx) >= (gpointer)(*lmf)->ebp)) {
- /* remove any unused lmf */
- *lmf = (*lmf)->previous_lmf;
- }
+ unwind_info = mono_jinfo_get_unwind_info (ji, &unwind_info_len);
address = (char *)ip - (char *)ji->code_start;
- if (managed)
- if (!ji->method->wrapper_type)
- *managed = TRUE;
-
- 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(gint64)));
- return ji;
-
+ memcpy(®s, &ctx->uc_mcontext.gregs, sizeof(regs));
+ mono_unwind_frame (unwind_info, unwind_info_len, ji->code_start,
+ (guint8 *) ji->code_start + ji->code_size,
+ ip, NULL, regs, 16, save_locations,
+ MONO_MAX_IREGS, &cfa);
+ memcpy (&new_ctx->uc_mcontext.gregs, ®s, sizeof(regs));
+ MONO_CONTEXT_SET_IP(new_ctx, regs[14] - 2);
+ MONO_CONTEXT_SET_BP(new_ctx, cfa);
+
+ return TRUE;
} else if (*lmf) {
-
- *new_ctx = *ctx;
-
- if (!(*lmf)->method)
- return (gpointer)-1;
- if ((ji = mini_jit_info_table_find (domain, (gpointer)(*lmf)->eip, NULL))) {
- } else {
- memset (res, 0, MONO_SIZEOF_JIT_INFO);
- res->method = (*lmf)->method;
+ ji = mini_jit_info_table_find (domain, (gpointer)(*lmf)->eip, NULL);
+ if (!ji) {
+ if (!(*lmf)->method)
+ return FALSE;
+
+ frame->method = (*lmf)->method;
}
+ frame->ji = ji;
+ frame->type = FRAME_TYPE_MANAGED_TO_NATIVE;
+
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);
+ MONO_CONTEXT_SET_IP (new_ctx, (*lmf)->eip - 2);
*lmf = (*lmf)->previous_lmf;
- return ji ? ji : res;
+ return TRUE;
}
- return NULL;
+ return FALSE;
}
/*========================= End of Function ========================*/
/* */
/* Parameters - ctx - Saved processor state */
/* obj - The exception object */
-/* test_only - Only test if the exception is caught, */
-/* but don't call handlers */
/* */
/*------------------------------------------------------------------*/
gboolean
-mono_arch_handle_exception (void *uc, gpointer obj, gboolean test_only)
+mono_arch_handle_exception (void *uc, gpointer obj)
{
- return mono_handle_exception (uc, obj, mono_arch_ip_from_context(uc), test_only);
+ return mono_handle_exception (uc, obj);
}
/*========================= End of Function ========================*/
projects / mono.git / blobdiff