/*
* mono_create_static_rgctx_trampoline:
*
* Return a static rgctx trampoline for M which branches to ADDR which should
* point to the compiled code of M.
*
* Static rgctx trampolines are used when a shared generic method which doesn't
* have a this argument is called indirectly, ie. from code which can't pass in
* the rgctx argument. The trampoline sets the rgctx argument and jumps to the
* methods code. These trampolines are similar to the unbox trampolines, they
* perform the same task as the static rgctx wrappers, but they are smaller/faster,
* and can be made to work with full AOT.
* On PPC addr should be an ftnptr and the return value is an ftnptr too.
*/
gpointer
mono_create_static_rgctx_trampoline (MonoMethod *m, gpointer addr)
{
gpointer ctx;
gpointer res;
MonoDomain *domain;
RgctxTrampInfo tmp_info;
RgctxTrampInfo *info;
#ifdef PPC_USES_FUNCTION_DESCRIPTOR
g_assert (((gpointer*)addr) [2] == 0);
#endif
if (mini_method_get_context (m)->method_inst)
ctx = mono_method_lookup_rgctx (mono_class_vtable (mono_domain_get (), m->klass), mini_method_get_context (m)->method_inst);
else
ctx = mono_class_vtable (mono_domain_get (), m->klass);
domain = mono_domain_get ();
/*
* In the AOT case, addr might point to either the method, or to an unbox trampoline,
* so make the hash keyed on the m+addr pair.
*/
mono_domain_lock (domain);
if (!domain_jit_info (domain)->static_rgctx_trampoline_hash)
domain_jit_info (domain)->static_rgctx_trampoline_hash = g_hash_table_new (rgctx_tramp_info_hash, rgctx_tramp_info_equal);
tmp_info.m = m;
tmp_info.addr = addr;
res = g_hash_table_lookup (domain_jit_info (domain)->static_rgctx_trampoline_hash,
&tmp_info);
mono_domain_unlock (domain);
if (res)
return res;
if (mono_aot_only)
res = mono_aot_get_static_rgctx_trampoline (ctx, addr);
else
res = mono_arch_get_static_rgctx_trampoline (m, ctx, addr);
mono_domain_lock (domain);
/* Duplicates inserted while we didn't hold the lock are OK */
info = mono_domain_alloc (domain, sizeof (RgctxTrampInfo));
info->m = m;
info->addr = addr;
g_hash_table_insert (domain_jit_info (domain)->static_rgctx_trampoline_hash, info, res);
mono_domain_unlock (domain);
static_rgctx_trampolines ++;
return res;
}
MonoSeqPointInfo*
get_seq_points (MonoDomain *domain, MonoMethod *method)
{
MonoSeqPointInfo *seq_points;
mono_domain_lock (domain);
seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, method);
if (!seq_points && method->is_inflated) {
/* generic sharing + aot */
seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, mono_method_get_declaring_generic_method (method));
if (!seq_points)
seq_points = g_hash_table_lookup (domain_jit_info (domain)->seq_points, mini_get_shared_method (method));
}
mono_domain_unlock (domain);
return seq_points;
}
void
mono_save_seq_point_info (MonoCompile *cfg)
{
MonoBasicBlock *bb;
GSList *bb_seq_points, *l;
MonoInst *last;
MonoDomain *domain = cfg->domain;
int i, seq_info_size;
GSList **next = NULL;
SeqPoint* seq_points;
GByteArray* array;
gboolean has_debug_data = cfg->gen_sdb_seq_points;
if (!cfg->seq_points)
return;
seq_points = g_new0 (SeqPoint, cfg->seq_points->len);
for (i = 0; i < cfg->seq_points->len; ++i) {
SeqPoint *sp = &seq_points [i];
MonoInst *ins = g_ptr_array_index (cfg->seq_points, i);
sp->il_offset = ins->inst_imm;
sp->native_offset = ins->inst_offset;
if (ins->flags & MONO_INST_NONEMPTY_STACK)
sp->flags |= MONO_SEQ_POINT_FLAG_NONEMPTY_STACK;
/* Used below */
ins->backend.size = i;
}
if (has_debug_data) {
/*
* For each sequence point, compute the list of sequence points immediately
* following it, this is needed to implement 'step over' in the debugger agent.
*/
next = g_new0 (GSList*, cfg->seq_points->len);
for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
bb_seq_points = g_slist_reverse (bb->seq_points);
last = NULL;
for (l = bb_seq_points; l; l = l->next) {
MonoInst *ins = l->data;
if (ins->inst_imm == METHOD_ENTRY_IL_OFFSET || ins->inst_imm == METHOD_EXIT_IL_OFFSET)
/* Used to implement method entry/exit events */
continue;
if (ins->inst_offset == SEQ_POINT_NATIVE_OFFSET_DEAD_CODE)
continue;
if (last != NULL) {
/* Link with the previous seq point in the same bb */
next [last->backend.size] = g_slist_append (next [last->backend.size], GUINT_TO_POINTER (ins->backend.size));
} else {
/* Link with the last bb in the previous bblocks */
collect_pred_seq_points (bb, ins, next, 0);
}
last = ins;
}
if (bb->last_ins && bb->last_ins->opcode == OP_ENDFINALLY && bb->seq_points) {
MonoBasicBlock *bb2;
MonoInst *endfinally_seq_point = NULL;
/*
* The ENDFINALLY branches are not represented in the cfg, so link it with all seq points starting bbs.
*/
l = g_slist_last (bb->seq_points);
if (l) {
endfinally_seq_point = l->data;
for (bb2 = cfg->bb_entry; bb2; bb2 = bb2->next_bb) {
GSList *l = g_slist_last (bb2->seq_points);
if (l) {
MonoInst *ins = l->data;
if (!(ins->inst_imm == METHOD_ENTRY_IL_OFFSET || ins->inst_imm == METHOD_EXIT_IL_OFFSET) && ins != endfinally_seq_point)
next [endfinally_seq_point->backend.size] = g_slist_append (next [endfinally_seq_point->backend.size], GUINT_TO_POINTER (ins->backend.size));
}
}
}
}
}
if (cfg->verbose_level > 2) {
printf ("\nSEQ POINT MAP: \n");
for (i = 0; i < cfg->seq_points->len; ++i) {
SeqPoint *sp = &seq_points [i];
GSList *l;
if (!next [i])
continue;
printf ("\tIL0x%x[0x%0x] ->", sp->il_offset, sp->native_offset);
for (l = next [i]; l; l = l->next) {
int next_index = GPOINTER_TO_UINT (l->data);
printf (" IL0x%x", seq_points [next_index].il_offset);
}
printf ("\n");
}
}
}
array = g_byte_array_new ();
{ /* Add sequence points to seq_point_info */
SeqPoint zero_seq_point = {0};
SeqPoint* last_seq_point = &zero_seq_point;
for (i = 0; i < cfg->seq_points->len; ++i) {
SeqPoint *sp = &seq_points [i];
GSList* next_list = NULL;
if (has_debug_data)
next_list = next[i];
if (seq_point_info_add_seq_point (array, sp, last_seq_point, next_list, has_debug_data))
last_seq_point = sp;
if (has_debug_data)
g_slist_free (next [i]);
}
}
if (has_debug_data)
g_free (next);
cfg->seq_point_info = seq_point_info_new (array->len, TRUE, array->data, has_debug_data, &seq_info_size);
mono_jit_stats.allocated_seq_points_size += seq_info_size;
g_byte_array_free (array, TRUE);
// FIXME: dynamic methods
if (!cfg->compile_aot) {
mono_domain_lock (domain);
// FIXME: How can the lookup succeed ?
if (!g_hash_table_lookup (domain_jit_info (domain)->seq_points, cfg->method_to_register))
g_hash_table_insert (domain_jit_info (domain)->seq_points, cfg->method_to_register, cfg->seq_point_info);
mono_domain_unlock (domain);
}
g_ptr_array_free (cfg->seq_points, TRUE);
cfg->seq_points = NULL;
}