/* Locates a method by name. Returns the method if it exists, or throws an
* exception if it can not be found. */
void MVM_6model_find_method(MVMThreadContext *tc, MVMObject *obj, MVMString *name, MVMRegister *res) {
MVMObject *cache, *HOW, *find_method, *code;
if (MVM_is_null(tc, obj))
MVM_exception_throw_adhoc(tc,
"Cannot call method '%s' on a null object",
MVM_string_utf8_encode_C_string(tc, name));
/* First try to find it in the cache. If we find it, we have a result.
* If we don't find it, but the cache is authoritative, then error. */
cache = STABLE(obj)->method_cache;
if (cache && IS_CONCRETE(cache)) {
MVMObject *meth = MVM_repr_at_key_o(tc, cache, name);
if (!MVM_is_null(tc, meth)) {
res->o = meth;
return;
}
if (STABLE(obj)->mode_flags & MVM_METHOD_CACHE_AUTHORITATIVE) {
MVMObject *handler = MVM_hll_current(tc)->method_not_found_error;
if (!MVM_is_null(tc, handler)) {
handler = MVM_frame_find_invokee(tc, handler, NULL);
MVM_args_setup_thunk(tc, NULL, MVM_RETURN_VOID, &mnfe_callsite);
tc->cur_frame->args[0].o = obj;
tc->cur_frame->args[1].s = name;
STABLE(handler)->invoke(tc, handler, &mnfe_callsite, tc->cur_frame->args);
return;
}
else {
MVM_exception_throw_adhoc(tc,
"Cannot find method '%s'",
MVM_string_utf8_encode_C_string(tc, name));
}
}
}
/* Otherwise, need to call the find_method method. We make the assumption
* that the invocant's meta-object's type is composed. */
HOW = STABLE(obj)->HOW;
find_method = MVM_6model_find_method_cache_only(tc, HOW,
tc->instance->str_consts.find_method);
if (MVM_is_null(tc, find_method))
MVM_exception_throw_adhoc(tc,
"Cannot find method '%s': no method cache and no .^find_method",
MVM_string_utf8_encode_C_string(tc, name));
/* Set up the call, using the result register as the target. */
code = MVM_frame_find_invokee(tc, find_method, NULL);
MVM_args_setup_thunk(tc, res, MVM_RETURN_OBJ, &fm_callsite);
tc->cur_frame->args[0].o = HOW;
tc->cur_frame->args[1].o = obj;
tc->cur_frame->args[2].s = name;
STABLE(code)->invoke(tc, code, &fm_callsite, tc->cur_frame->args);
}
void MVM_6model_can_method(MVMThreadContext *tc, MVMObject *obj, MVMString *name, MVMRegister *res) {
MVMObject *HOW, *find_method, *code;
MVMCallsite *findmeth_callsite;
MVMint64 can_cached = MVM_6model_can_method_cache_only(tc, obj, name);
if (can_cached == 0 || can_cached == 1) {
res->i64 = can_cached;
return;
}
/* If no method in cache and the cache is not authoritative, need to make
* a late-bound call to find_method. */
HOW = MVM_6model_get_how(tc, STABLE(obj));
find_method = MVM_6model_find_method_cache_only(tc, HOW,
tc->instance->str_consts.find_method);
if (MVM_is_null(tc, find_method)) {
/* This'll count as a "no"... */
res->i64 = 0;
return;
}
/* Set up the call, using the result register as the target. A little bad
* as we're really talking about */
code = MVM_frame_find_invokee(tc, find_method, NULL);
findmeth_callsite = MVM_callsite_get_common(tc, MVM_CALLSITE_ID_FIND_METHOD);
MVM_args_setup_thunk(tc, res, MVM_RETURN_OBJ, findmeth_callsite);
tc->cur_frame->special_return = late_bound_can_return;
tc->cur_frame->special_return_data = res;
tc->cur_frame->args[0].o = HOW;
tc->cur_frame->args[1].o = obj;
tc->cur_frame->args[2].s = name;
STABLE(code)->invoke(tc, code, findmeth_callsite, tc->cur_frame->args);
}
static void code_pair_fetch_internal(MVMThreadContext *tc, MVMObject *cont, MVMRegister *res, MVMReturnType res_type) {
CodePairContData *data = (CodePairContData *)STABLE(cont)->container_data;
MVMObject *code = MVM_frame_find_invokee(tc, data->fetch_code, NULL);
MVMCallsite *inv_arg_callsite = MVM_callsite_get_common(tc, MVM_CALLSITE_ID_INV_ARG);
MVM_args_setup_thunk(tc, res, res_type, inv_arg_callsite);
tc->cur_frame->args[0].o = cont;
STABLE(code)->invoke(tc, code, inv_arg_callsite, tc->cur_frame->args);
}
static void code_pair_store_internal(MVMThreadContext *tc, MVMObject *cont, MVMRegister value, MVMCallsite *cs) {
CodePairContData *data = (CodePairContData *)STABLE(cont)->container_data;
MVMObject *code = MVM_frame_find_invokee(tc, data->store_code, NULL);
MVM_args_setup_thunk(tc, NULL, MVM_RETURN_VOID, cs);
tc->cur_frame->args[0].o = cont;
tc->cur_frame->args[1] = value;
STABLE(code)->invoke(tc, code, cs, tc->cur_frame->args);
}
static void code_pair_fetch(MVMThreadContext *tc, MVMObject *cont, MVMRegister *res) {
CodePairContData *data = (CodePairContData *)STABLE(cont)->container_data;
MVMObject *code = MVM_frame_find_invokee(tc, data->fetch_code, NULL);
MVM_args_setup_thunk(tc, res, MVM_RETURN_OBJ, &fetch_arg_callsite);
tc->cur_frame->args[0].o = cont;
STABLE(code)->invoke(tc, code, &fetch_arg_callsite, tc->cur_frame->args);
}
static void rakudo_scalar_store(MVMThreadContext *tc, MVMObject *cont, MVMObject *value) {
RakudoContData *data = (RakudoContData *)STABLE(cont)->container_data;
MVMObject *code = MVM_frame_find_invokee(tc, data->store, NULL);
MVMCallsite *cs = MVM_callsite_get_common(tc, MVM_CALLSITE_ID_TWO_OBJ);
MVM_args_setup_thunk(tc, NULL, MVM_RETURN_VOID, cs);
tc->cur_frame->args[0].o = cont;
tc->cur_frame->args[1].o = value;
STABLE(code)->invoke(tc, code, cs, tc->cur_frame->args);
}
static void code_pair_store(MVMThreadContext *tc, MVMObject *cont, MVMObject *obj) {
CodePairContData *data = (CodePairContData *)STABLE(cont)->container_data;
MVMObject *code = MVM_frame_find_invokee(tc, data->store_code, NULL);
MVM_args_setup_thunk(tc, NULL, MVM_RETURN_VOID, &store_arg_callsite);
tc->cur_frame->args[0].o = cont;
tc->cur_frame->args[1].o = obj;
STABLE(code)->invoke(tc, code, &store_arg_callsite, tc->cur_frame->args);
}
static void code_pair_fetch(MVMThreadContext *tc, MVMObject *cont, MVMRegister *res) {
CodePairContData *data = (CodePairContData *)STABLE(cont)->container_data;
MVMObject *code = MVM_frame_find_invokee(tc, data->fetch_code);
tc->cur_frame->return_value = res;
tc->cur_frame->return_type = MVM_RETURN_OBJ;
tc->cur_frame->return_address = *(tc->interp_cur_op);
tc->cur_frame->args[0].o = cont;
STABLE(code)->invoke(tc, code, &fetch_arg_callsite, tc->cur_frame->args);
}
static void run_handler(MVMThreadContext *tc, LocatedHandler lh, MVMObject *ex_obj, MVMuint32 category) {
switch (lh.handler->action) {
case MVM_EX_ACTION_GOTO:
if (lh.jit_handler) {
void **labels = lh.frame->spesh_cand->jitcode->labels;
MVMuint8 *pc = lh.frame->spesh_cand->jitcode->bytecode;
lh.frame->jit_entry_label = labels[lh.jit_handler->goto_label];
MVM_frame_unwind_to(tc, lh.frame, pc, 0, NULL);
} else {
MVM_frame_unwind_to(tc, lh.frame, NULL, lh.handler->goto_offset, NULL);
}
break;
case MVM_EX_ACTION_INVOKE: {
/* Create active handler record. */
MVMActiveHandler *ah = MVM_malloc(sizeof(MVMActiveHandler));
MVMFrame *cur_frame = tc->cur_frame;
MVMObject *handler_code;
/* Ensure we have an exception object. */
if (ex_obj == NULL) {
ex_obj = MVM_repr_alloc_init(tc, tc->instance->boot_types.BOOTException);
((MVMException *)ex_obj)->body.category = category;
}
/* Find frame to invoke. */
handler_code = MVM_frame_find_invokee(tc, lh.frame->work[lh.handler->block_reg].o, NULL);
/* Install active handler record. */
ah->frame = MVM_frame_inc_ref(tc, lh.frame);
ah->handler = lh.handler;
ah->jit_handler = lh.jit_handler;
ah->ex_obj = ex_obj;
ah->next_handler = tc->active_handlers;
tc->active_handlers = ah;
/* Set up special return to unwinding after running the
* handler. */
cur_frame->return_value = (MVMRegister *)&tc->last_handler_result;
cur_frame->return_type = MVM_RETURN_OBJ;
cur_frame->special_return = unwind_after_handler;
cur_frame->special_unwind = cleanup_active_handler;
cur_frame->special_return_data = ah;
/* Invoke the handler frame and return to runloop. */
STABLE(handler_code)->invoke(tc, handler_code, MVM_callsite_get_common(tc, MVM_CALLSITE_ID_NULL_ARGS),
cur_frame->args);
break;
}
default:
MVM_panic(1, "Unimplemented handler action");
}
}
static void code_pair_store(MVMThreadContext *tc, MVMObject *cont, MVMObject *obj) {
CodePairContData *data = (CodePairContData *)STABLE(cont)->container_data;
MVMObject *code = MVM_frame_find_invokee(tc, data->store_code);
tc->cur_frame->return_value = NULL;
tc->cur_frame->return_type = MVM_RETURN_VOID;
tc->cur_frame->return_address = *(tc->interp_cur_op);
tc->cur_frame->args[0].o = cont;
tc->cur_frame->args[1].o = obj;
STABLE(code)->invoke(tc, code, &store_arg_callsite, tc->cur_frame->args);
}
void MVM_6model_find_method(MVMThreadContext *tc, MVMObject *obj, MVMString *name, MVMRegister *res) {
MVMObject *cache, *HOW, *find_method, *code;
MVMCallsite *findmeth_callsite;
if (MVM_is_null(tc, obj))
MVM_exception_throw_adhoc(tc,
"Cannot call method '%s' on a null object",
MVM_string_utf8_encode_C_string(tc, name));
/* First try to find it in the cache. If we find it, we have a result.
* If we don't find it, but the cache is authoritative, then error. */
cache = get_method_cache(tc, STABLE(obj));
if (cache && IS_CONCRETE(cache)) {
MVMObject *meth = MVM_repr_at_key_o(tc, cache, name);
if (!MVM_is_null(tc, meth)) {
res->o = meth;
return;
}
if (STABLE(obj)->mode_flags & MVM_METHOD_CACHE_AUTHORITATIVE) {
die_over_missing_method(tc, obj, name);
return;
}
}
/* Otherwise, need to call the find_method method. We make the assumption
* that the invocant's meta-object's type is composed. */
HOW = MVM_6model_get_how(tc, STABLE(obj));
find_method = MVM_6model_find_method_cache_only(tc, HOW,
tc->instance->str_consts.find_method);
if (MVM_is_null(tc, find_method))
MVM_exception_throw_adhoc(tc,
"Cannot find method '%s': no method cache and no .^find_method",
MVM_string_utf8_encode_C_string(tc, name));
/* Set up the call, using the result register as the target. */
code = MVM_frame_find_invokee(tc, find_method, NULL);
findmeth_callsite = MVM_callsite_get_common(tc, MVM_CALLSITE_ID_FIND_METHOD);
MVM_args_setup_thunk(tc, res, MVM_RETURN_OBJ, findmeth_callsite);
{
FindMethodSRData *fm = MVM_malloc(sizeof(FindMethodSRData));
fm->obj = obj;
fm->name = name;
fm->res = res;
tc->cur_frame->special_return = late_bound_find_method_return;
tc->cur_frame->special_return_data = fm;
tc->cur_frame->mark_special_return_data = mark_find_method_sr_data;
}
tc->cur_frame->args[0].o = HOW;
tc->cur_frame->args[1].o = obj;
tc->cur_frame->args[2].s = name;
STABLE(code)->invoke(tc, code, findmeth_callsite, tc->cur_frame->args);
}
/* Sets the passed thread context's thread up so that we'll run a finalize
* handler on it in the near future. */
static void finalize_handler_caller(MVMThreadContext *tc, void *sr_data) {
MVMObject *handler = MVM_hll_current(tc)->finalize_handler;
if (handler) {
/* Drain the finalizing queue to an array. */
MVMObject *drain = MVM_repr_alloc_init(tc, tc->instance->boot_types.BOOTArray);
while (tc->num_finalizing > 0)
MVM_repr_push_o(tc, drain, tc->finalizing[--tc->num_finalizing]);
/* Invoke the handler. */
handler = MVM_frame_find_invokee(tc, handler, NULL);
MVM_args_setup_thunk(tc, NULL, MVM_RETURN_VOID, MVM_callsite_get_common(tc, MVM_CALLSITE_ID_INV_ARG));
tc->cur_frame->args[0].o = drain;
STABLE(handler)->invoke(tc, handler, MVM_callsite_get_common(tc, MVM_CALLSITE_ID_INV_ARG), tc->cur_frame->args);
}
}
void MVM_frame_unwind_to(MVMThreadContext *tc, MVMFrame *frame, MVMuint8 *abs_addr,
MVMuint32 rel_addr, MVMObject *return_value) {
while (tc->cur_frame != frame) {
if (tc->cur_frame->static_info->body.has_exit_handler &&
!(tc->cur_frame->flags & MVM_FRAME_FLAG_EXIT_HAND_RUN)) {
/* We're unwinding a frame with an exit handler. Thus we need to
* pause the unwind, run the exit handler, and keep enough info
* around in order to finish up the unwind afterwards. */
MVMFrame *caller = tc->cur_frame->caller;
MVMHLLConfig *hll = MVM_hll_current(tc);
MVMObject *handler;
if (!caller)
MVM_exception_throw_adhoc(tc, "Entry point frame cannot have an exit handler");
if (tc->cur_frame == tc->thread_entry_frame)
MVM_exception_throw_adhoc(tc, "Thread entry point frame cannot have an exit handler");
MVM_args_setup_thunk(tc, NULL, MVM_RETURN_VOID, &exit_arg_callsite);
tc->cur_frame->args[0].o = tc->cur_frame->code_ref;
tc->cur_frame->args[1].o = NULL;
tc->cur_frame->special_return = continue_unwind;
{
MVMUnwindData *ud = malloc(sizeof(MVMUnwindData));
ud->frame = frame;
ud->abs_addr = abs_addr;
ud->rel_addr = rel_addr;
if (return_value)
MVM_exception_throw_adhoc(tc, "return_value + exit_handler case NYI");
tc->cur_frame->special_return_data = ud;
}
tc->cur_frame->flags |= MVM_FRAME_FLAG_EXIT_HAND_RUN;
handler = MVM_frame_find_invokee(tc, hll->exit_handler, NULL);
STABLE(handler)->invoke(tc, handler, &exit_arg_callsite, tc->cur_frame->args);
return;
}
else {
/* No exit handler, so just remove the frame. */
if (!remove_one_frame(tc, 1))
MVM_panic(1, "Internal error: Unwound entire stack and missed handler");
}
}
if (abs_addr)
*tc->interp_cur_op = abs_addr;
else if (rel_addr)
*tc->interp_cur_op = *tc->interp_bytecode_start + rel_addr;
if (return_value)
MVM_args_set_result_obj(tc, return_value, 1);
}
static void die_over_missing_method(MVMThreadContext *tc, MVMObject *obj, MVMString *name) {
MVMObject *handler = MVM_hll_current(tc)->method_not_found_error;
if (!MVM_is_null(tc, handler)) {
handler = MVM_frame_find_invokee(tc, handler, NULL);
MVM_args_setup_thunk(tc, NULL, MVM_RETURN_VOID, &mnfe_callsite);
tc->cur_frame->args[0].o = obj;
tc->cur_frame->args[1].s = name;
STABLE(handler)->invoke(tc, handler, &mnfe_callsite, tc->cur_frame->args);
return;
}
else {
MVM_exception_throw_adhoc(tc,
"Cannot find method '%s'",
MVM_string_utf8_encode_C_string(tc, name));
}
}
MVMuint64 MVM_frame_try_return(MVMThreadContext *tc) {
if (tc->cur_frame->static_info->body.has_exit_handler &&
!(tc->cur_frame->flags & MVM_FRAME_FLAG_EXIT_HAND_RUN)) {
/* Set us up to run exit handler, and make it so we'll really exit the
* frame when that has been done. */
MVMFrame *caller = tc->cur_frame->caller;
MVMHLLConfig *hll = MVM_hll_current(tc);
MVMObject *handler;
MVMObject *result;
if (!caller)
MVM_exception_throw_adhoc(tc, "Entry point frame cannot have an exit handler");
if (tc->cur_frame == tc->thread_entry_frame)
MVM_exception_throw_adhoc(tc, "Thread entry point frame cannot have an exit handler");
switch (caller->return_type) {
case MVM_RETURN_OBJ:
result = caller->return_value->o;
break;
case MVM_RETURN_INT:
result = MVM_repr_box_int(tc, hll->int_box_type, caller->return_value->i64);
break;
case MVM_RETURN_NUM:
result = MVM_repr_box_num(tc, hll->num_box_type, caller->return_value->n64);
break;
case MVM_RETURN_STR:
result = MVM_repr_box_str(tc, hll->str_box_type, caller->return_value->s);
break;
default:
result = NULL;
}
MVM_args_setup_thunk(tc, NULL, MVM_RETURN_VOID, &exit_arg_callsite);
tc->cur_frame->args[0].o = tc->cur_frame->code_ref;
tc->cur_frame->args[1].o = result;
tc->cur_frame->special_return = remove_after_handler;
tc->cur_frame->flags |= MVM_FRAME_FLAG_EXIT_HAND_RUN;
handler = MVM_frame_find_invokee(tc, hll->exit_handler, NULL);
STABLE(handler)->invoke(tc, handler, &exit_arg_callsite, tc->cur_frame->args);
return 1;
}
else {
/* No exit handler, so a straight return. */
return remove_one_frame(tc, 0);
}
}
void MVM_coerce_smart_stringify(MVMThreadContext *tc, MVMObject *obj, MVMRegister *res_reg) {
MVMObject *strmeth;
const MVMStorageSpec *ss;
/* Handle null case. */
if (MVM_is_null(tc, obj)) {
res_reg->s = tc->instance->str_consts.empty;
return;
}
/* If it can unbox as a string, that wins right off. */
ss = REPR(obj)->get_storage_spec(tc, STABLE(obj));
if (ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_STR && IS_CONCRETE(obj)) {
res_reg->s = REPR(obj)->box_funcs.get_str(tc, STABLE(obj), obj, OBJECT_BODY(obj));
return;
}
/* Check if there is a Str method. */
strmeth = MVM_6model_find_method_cache_only(tc, obj,
tc->instance->str_consts.Str);
if (!MVM_is_null(tc, strmeth)) {
/* We need to do the invocation; just set it up with our result reg as
* the one for the call. */
MVMObject *code = MVM_frame_find_invokee(tc, strmeth, NULL);
MVMCallsite *inv_arg_callsite = MVM_callsite_get_common(tc, MVM_CALLSITE_ID_INV_ARG);
MVM_args_setup_thunk(tc, res_reg, MVM_RETURN_STR, inv_arg_callsite);
tc->cur_frame->args[0].o = obj;
STABLE(code)->invoke(tc, code, inv_arg_callsite, tc->cur_frame->args);
return;
}
/* Otherwise, guess something appropriate. */
if (!IS_CONCRETE(obj))
res_reg->s = tc->instance->str_consts.empty;
else {
if (REPR(obj)->ID == MVM_REPR_ID_MVMException)
res_reg->s = ((MVMException *)obj)->body.message;
else if (ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_INT)
res_reg->s = MVM_coerce_i_s(tc, REPR(obj)->box_funcs.get_int(tc, STABLE(obj), obj, OBJECT_BODY(obj)));
else if (ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_NUM)
res_reg->s = MVM_coerce_n_s(tc, REPR(obj)->box_funcs.get_num(tc, STABLE(obj), obj, OBJECT_BODY(obj)));
else
MVM_exception_throw_adhoc(tc, "cannot stringify this");
}
}
void MVM_coerce_smart_numify(MVMThreadContext *tc, MVMObject *obj, MVMRegister *res_reg) {
MVMObject *nummeth;
/* Handle null case. */
if (MVM_is_null(tc, obj)) {
res_reg->n64 = 0.0;
return;
}
/* Check if there is a Num method. */
nummeth = MVM_6model_find_method_cache_only(tc, obj,
tc->instance->str_consts.Num);
if (!MVM_is_null(tc, nummeth)) {
/* We need to do the invocation; just set it up with our result reg as
* the one for the call. */
MVMObject *code = MVM_frame_find_invokee(tc, nummeth, NULL);
MVMCallsite *inv_arg_callsite = MVM_callsite_get_common(tc, MVM_CALLSITE_ID_INV_ARG);
MVM_args_setup_thunk(tc, res_reg, MVM_RETURN_NUM, inv_arg_callsite);
tc->cur_frame->args[0].o = obj;
STABLE(code)->invoke(tc, code, inv_arg_callsite, tc->cur_frame->args);
return;
}
/* Otherwise, guess something appropriate. */
if (!IS_CONCRETE(obj)) {
res_reg->n64 = 0.0;
}
else {
const MVMStorageSpec *ss = REPR(obj)->get_storage_spec(tc, STABLE(obj));
if (ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_INT)
res_reg->n64 = (MVMnum64)REPR(obj)->box_funcs.get_int(tc, STABLE(obj), obj, OBJECT_BODY(obj));
else if (ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_NUM)
res_reg->n64 = REPR(obj)->box_funcs.get_num(tc, STABLE(obj), obj, OBJECT_BODY(obj));
else if (ss->can_box & MVM_STORAGE_SPEC_CAN_BOX_STR)
res_reg->n64 = MVM_coerce_s_n(tc, REPR(obj)->box_funcs.get_str(tc, STABLE(obj), obj, OBJECT_BODY(obj)));
else if (REPR(obj)->ID == MVM_REPR_ID_MVMArray)
res_reg->n64 = (MVMnum64)REPR(obj)->elems(tc, STABLE(obj), obj, OBJECT_BODY(obj));
else if (REPR(obj)->ID == MVM_REPR_ID_MVMHash)
res_reg->n64 = (MVMnum64)REPR(obj)->elems(tc, STABLE(obj), obj, OBJECT_BODY(obj));
else
MVM_exception_throw_adhoc(tc, "cannot numify this");
}
}
void MVM_6model_can_method(MVMThreadContext *tc, MVMObject *obj, MVMString *name, MVMRegister *res) {
MVMObject *cache, *HOW, *find_method, *code;
if (!obj)
MVM_exception_throw_adhoc(tc,
"Cannot look for method '%s' on a null object",
MVM_string_utf8_encode_C_string(tc, name));
/* First consider method cache. */
cache = STABLE(obj)->method_cache;
if (cache && IS_CONCRETE(cache)) {
MVMObject *meth = MVM_repr_at_key_o(tc, cache, name);
if (meth) {
res->i64 = 1;
return;
}
if (STABLE(obj)->mode_flags & MVM_METHOD_CACHE_AUTHORITATIVE) {
res->i64 = 0;
return;
}
}
/* If no method in cache and the cache is not authoritative, need to make
* a late-bound call to find_method. */
HOW = STABLE(obj)->HOW;
find_method = MVM_6model_find_method_cache_only(tc, HOW,
tc->instance->str_consts.find_method);
if (find_method == NULL) {
/* This'll count as a "no"... */
res->i64 = 0;
return;
}
/* Set up the call, using the result register as the target. A little bad
* as we're really talking about */
code = MVM_frame_find_invokee(tc, find_method, NULL);
MVM_args_setup_thunk(tc, res, MVM_RETURN_OBJ, &fm_callsite);
tc->cur_frame->special_return = late_bound_can_return;
tc->cur_frame->special_return_data = res;
tc->cur_frame->args[0].o = HOW;
tc->cur_frame->args[1].o = obj;
tc->cur_frame->args[2].s = name;
STABLE(code)->invoke(tc, code, &fm_callsite, tc->cur_frame->args);
}
/* Checks if an object has a given type, delegating to the type_check or
* accepts_type methods as needed. */
static void do_accepts_type_check(MVMThreadContext *tc, MVMObject *obj, MVMObject *type, MVMRegister *res) {
MVMObject *HOW = MVM_6model_get_how(tc, STABLE(type));
MVMObject *meth = MVM_6model_find_method_cache_only(tc, HOW,
tc->instance->str_consts.accepts_type);
if (!MVM_is_null(tc, meth)) {
/* Set up the call, using the result register as the target. */
MVMObject *code = MVM_frame_find_invokee(tc, meth, NULL);
MVM_args_setup_thunk(tc, res, MVM_RETURN_INT, &tc_callsite);
tc->cur_frame->args[0].o = HOW;
tc->cur_frame->args[1].o = type;
tc->cur_frame->args[2].o = obj;
STABLE(code)->invoke(tc, code, &tc_callsite, tc->cur_frame->args);
return;
}
else {
MVM_exception_throw_adhoc(tc,
"Expected 'accepts_type' method, but none found in meta-object");
}
}
static void run_handler(MVMThreadContext *tc, LocatedHandler lh, MVMObject *ex_obj) {
switch (lh.handler->action) {
case MVM_EX_ACTION_GOTO:
unwind_to_frame(tc, lh.frame);
*tc->interp_cur_op = *tc->interp_bytecode_start + lh.handler->goto_offset;
break;
case MVM_EX_ACTION_INVOKE: {
/* Create active handler record. */
MVMActiveHandler *ah = malloc(sizeof(MVMActiveHandler));
/* Find frame to invoke. */
MVMObject *handler_code = MVM_frame_find_invokee(tc,
lh.frame->work[lh.handler->block_reg].o);
/* Ensure we have an exception object. */
/* TODO: Can make one up. */
if (ex_obj == NULL)
MVM_panic(1, "Exception object creation NYI");
/* Install active handler record. */
ah->frame = lh.frame;
ah->handler = lh.handler;
ah->ex_obj = ex_obj;
ah->next_handler = tc->active_handlers;
tc->active_handlers = ah;
/* Set up special return to unwinding after running the
* handler. */
tc->cur_frame->return_value = NULL;
tc->cur_frame->return_type = MVM_RETURN_VOID;
tc->cur_frame->special_return = unwind_after_handler;
tc->cur_frame->special_return_data = ah;
/* Inovke the handler frame and return to runloop. */
STABLE(handler_code)->invoke(tc, handler_code, &no_arg_callsite,
tc->cur_frame->args);
break;
}
default:
MVM_panic(1, "Unimplemented handler action");
}
}
void MVM_coerce_smart_stringify(MVMThreadContext *tc, MVMObject *obj, MVMRegister *res_reg) {
MVMObject *strmeth;
/* Handle null case. */
if (!obj) {
res_reg->s = tc->instance->str_consts->empty;
return;
}
/* Check if there is a Str method. */
strmeth = MVM_6model_find_method_cache_only(tc, obj,
tc->instance->str_consts->Str);
if (strmeth) {
/* We need to do the invocation; just set it up with our result reg as
* the one for the call. */
MVMObject *code = MVM_frame_find_invokee(tc, strmeth);
tc->cur_frame->return_value = res_reg;
tc->cur_frame->return_type = MVM_RETURN_STR;
tc->cur_frame->return_address = *(tc->interp_cur_op);
tc->cur_frame->args[0].o = obj;
STABLE(code)->invoke(tc, code, get_inv_callsite(), tc->cur_frame->args);
return;
}
/* Otherwise, guess something appropriate. */
if (!IS_CONCRETE(obj))
res_reg->s = tc->instance->str_consts->empty;
else {
MVMStorageSpec ss = REPR(obj)->get_storage_spec(tc, STABLE(obj));
if (REPR(obj)->ID == MVM_REPR_ID_MVMString)
res_reg->s = (MVMString *)obj;
else if (ss.can_box & MVM_STORAGE_SPEC_CAN_BOX_STR)
res_reg->s = REPR(obj)->box_funcs->get_str(tc, STABLE(obj), obj, OBJECT_BODY(obj));
else if (ss.can_box & MVM_STORAGE_SPEC_CAN_BOX_INT)
res_reg->s = MVM_coerce_i_s(tc, REPR(obj)->box_funcs->get_int(tc, STABLE(obj), obj, OBJECT_BODY(obj)));
else if (ss.can_box & MVM_STORAGE_SPEC_CAN_BOX_NUM)
res_reg->s = MVM_coerce_n_s(tc, REPR(obj)->box_funcs->get_num(tc, STABLE(obj), obj, OBJECT_BODY(obj)));
else
MVM_exception_throw_adhoc(tc, "cannot stringify this");
}
}
void MVM_continuation_reset(MVMThreadContext *tc, MVMObject *tag,
MVMObject *code, MVMRegister *res_reg) {
/* Save the tag. */
MVMContinuationTag *tag_record = MVM_malloc(sizeof(MVMContinuationTag));
tag_record->tag = tag;
tag_record->active_handlers = tc->active_handlers;
tag_record->next = tc->cur_frame->continuation_tags;
tc->cur_frame->continuation_tags = tag_record;
/* Were we passed code or a continuation? */
if (REPR(code)->ID == MVM_REPR_ID_MVMContinuation) {
/* Continuation; invoke it. */
MVM_continuation_invoke(tc, (MVMContinuation *)code, NULL, res_reg);
}
else {
/* Run the passed code. */
MVMCallsite *null_args_callsite = MVM_callsite_get_common(tc, MVM_CALLSITE_ID_NULL_ARGS);
code = MVM_frame_find_invokee(tc, code, NULL);
MVM_args_setup_thunk(tc, res_reg, MVM_RETURN_OBJ, null_args_callsite);
tc->cur_frame->special_return = clear_tag;
tc->cur_frame->special_return_data = tag_record;
STABLE(code)->invoke(tc, code, null_args_callsite, tc->cur_frame->args);
}
}
void MVM_6model_istype(MVMThreadContext *tc, MVMObject *obj, MVMObject *type, MVMRegister *res) {
MVMObject **cache;
MVMSTable *st;
MVMint64 mode;
/* Null never type-checks. */
if (MVM_is_null(tc, obj)) {
res->i64 = 0;
return;
}
st = STABLE(obj);
mode = STABLE(type)->mode_flags & MVM_TYPE_CHECK_CACHE_FLAG_MASK;
cache = st->type_check_cache;
if (cache) {
/* We have the cache, so just look for the type object we
* want to be in there. */
MVMint64 elems = STABLE(obj)->type_check_cache_length;
MVMint64 i;
for (i = 0; i < elems; i++) {
if (cache[i] == type) {
res->i64 = 1;
return;
}
}
/* If the type check cache is definitive, we're done. */
if ((mode & MVM_TYPE_CHECK_CACHE_THEN_METHOD) == 0 &&
(mode & MVM_TYPE_CHECK_NEEDS_ACCEPTS) == 0) {
res->i64 = 0;
return;
}
}
/* If we get here, need to call .^type_check on the value we're
* checking, unless it's an accepts check. */
if (!cache || (mode & MVM_TYPE_CHECK_CACHE_THEN_METHOD)) {
MVMObject *HOW = MVM_6model_get_how(tc, st);
MVMObject *meth = MVM_6model_find_method_cache_only(tc, HOW,
tc->instance->str_consts.type_check);
if (!MVM_is_null(tc, meth)) {
/* Set up the call, using the result register as the target. */
MVMObject *code = MVM_frame_find_invokee(tc, meth, NULL);
MVMCallsite *typecheck_callsite = MVM_callsite_get_common(tc, MVM_CALLSITE_ID_TYPECHECK);
MVM_args_setup_thunk(tc, res, MVM_RETURN_INT, typecheck_callsite);
tc->cur_frame->args[0].o = HOW;
tc->cur_frame->args[1].o = obj;
tc->cur_frame->args[2].o = type;
if (mode & MVM_TYPE_CHECK_NEEDS_ACCEPTS) {
AcceptsTypeSRData *atd = MVM_malloc(sizeof(AcceptsTypeSRData));
atd->obj = obj;
atd->type = type;
atd->res = res;
tc->cur_frame->special_return = accepts_type_sr;
tc->cur_frame->special_return_data = atd;
tc->cur_frame->mark_special_return_data = mark_sr_data;
}
STABLE(code)->invoke(tc, code, typecheck_callsite, tc->cur_frame->args);
return;
}
}
/* If the flag to call .accepts_type on the target value is set, do so. */
if (mode & MVM_TYPE_CHECK_NEEDS_ACCEPTS) {
do_accepts_type_check(tc, obj, type, res);
}
else {
/* If all else fails... */
res->i64 = 0;
}
}
static void * unmarshal_callback(MVMThreadContext *tc, MVMObject *callback, MVMObject *sig_info) {
MVMNativeCallbackCacheHead *callback_data_head = NULL;
MVMNativeCallback **callback_data_handle;
MVMString *cuid;
if (!IS_CONCRETE(callback))
return NULL;
/* Try to locate existing cached callback info. */
callback = MVM_frame_find_invokee(tc, callback, NULL);
cuid = ((MVMCode *)callback)->body.sf->body.cuuid;
MVM_string_flatten(tc, cuid);
MVM_HASH_GET(tc, tc->native_callback_cache, cuid, callback_data_head);
if (!callback_data_head) {
callback_data_head = MVM_malloc(sizeof(MVMNativeCallbackCacheHead));
callback_data_head->head = NULL;
MVM_HASH_BIND(tc, tc->native_callback_cache, cuid, callback_data_head);
}
callback_data_handle = &(callback_data_head->head);
while (*callback_data_handle) {
if ((*callback_data_handle)->target == callback) /* found it, break */
break;
callback_data_handle = &((*callback_data_handle)->next);
}
if (!*callback_data_handle) {
/* First, build the MVMNativeCallback */
MVMCallsite *cs;
char *signature;
MVMObject *typehash;
MVMint64 num_info, i;
MVMNativeCallback *callback_data;
num_info = MVM_repr_elems(tc, sig_info);
callback_data = MVM_malloc(sizeof(MVMNativeCallback));
callback_data->num_types = num_info;
callback_data->typeinfos = MVM_malloc(num_info * sizeof(MVMint16));
callback_data->types = MVM_malloc(num_info * sizeof(MVMObject *));
callback_data->next = NULL;
/* A dyncall signature looks like this: xxx)x
* Argument types before the ) and return type after it. Thus,
* num_info+1 must be NULL (zero-terminated string) and num_info-1
* must be the ).
*/
signature = MVM_malloc(num_info + 2);
signature[num_info + 1] = '\0';
signature[num_info - 1] = ')';
/* We'll also build up a MoarVM callsite as we go. */
cs = MVM_malloc(sizeof(MVMCallsite));
cs->arg_flags = MVM_malloc(num_info * sizeof(MVMCallsiteEntry));
cs->arg_count = num_info - 1;
cs->num_pos = num_info - 1;
cs->has_flattening = 0;
cs->is_interned = 0;
cs->with_invocant = NULL;
typehash = MVM_repr_at_pos_o(tc, sig_info, 0);
callback_data->types[0] = MVM_repr_at_key_o(tc, typehash,
tc->instance->str_consts.typeobj);
callback_data->typeinfos[0] = MVM_nativecall_get_arg_type(tc, typehash, 1);
signature[num_info] = get_signature_char(callback_data->typeinfos[0]);
for (i = 1; i < num_info; i++) {
typehash = MVM_repr_at_pos_o(tc, sig_info, i);
callback_data->types[i] = MVM_repr_at_key_o(tc, typehash,
tc->instance->str_consts.typeobj);
callback_data->typeinfos[i] = MVM_nativecall_get_arg_type(tc, typehash, 0) & ~MVM_NATIVECALL_ARG_FREE_STR;
signature[i - 1] = get_signature_char(callback_data->typeinfos[i]);
switch (callback_data->typeinfos[i] & MVM_NATIVECALL_ARG_TYPE_MASK) {
case MVM_NATIVECALL_ARG_CHAR:
case MVM_NATIVECALL_ARG_SHORT:
case MVM_NATIVECALL_ARG_INT:
case MVM_NATIVECALL_ARG_LONG:
case MVM_NATIVECALL_ARG_LONGLONG:
cs->arg_flags[i - 1] = MVM_CALLSITE_ARG_INT;
break;
case MVM_NATIVECALL_ARG_UCHAR:
case MVM_NATIVECALL_ARG_USHORT:
case MVM_NATIVECALL_ARG_UINT:
case MVM_NATIVECALL_ARG_ULONG:
case MVM_NATIVECALL_ARG_ULONGLONG:
/* TODO: should probably be UINT, when we can support that. */
cs->arg_flags[i - 1] = MVM_CALLSITE_ARG_INT;
break;
case MVM_NATIVECALL_ARG_FLOAT:
case MVM_NATIVECALL_ARG_DOUBLE:
cs->arg_flags[i - 1] = MVM_CALLSITE_ARG_NUM;
break;
default:
cs->arg_flags[i - 1] = MVM_CALLSITE_ARG_OBJ;
break;
}
}
MVM_callsite_try_intern(tc, &cs);
callback_data->tc = tc;
callback_data->cs = cs;
callback_data->target = callback;
callback_data->cb = dcbNewCallback(signature, (DCCallbackHandler *)&callback_handler, callback_data);
/* Now insert the MVMCallback into the linked list. */
*callback_data_handle = callback_data;
MVM_free(signature);
}
return (*callback_data_handle)->cb;
}
void MVM_coerce_istrue(MVMThreadContext *tc, MVMObject *obj, MVMRegister *res_reg,
MVMuint8 *true_addr, MVMuint8 *false_addr, MVMuint8 flip) {
MVMint64 result;
if (obj == NULL) {
result = 0;
}
else {
MVMBoolificationSpec *bs = obj->st->boolification_spec;
switch (bs == NULL ? MVM_BOOL_MODE_NOT_TYPE_OBJECT : bs->mode) {
case MVM_BOOL_MODE_CALL_METHOD:
if (res_reg) {
/* We need to do the invocation, and set this register
* the result. Then we just do the call. For the flip
* case, just set up special return handler to flip
* the register. */
MVMObject *code = MVM_frame_find_invokee(tc, bs->method);
tc->cur_frame->return_value = res_reg;
tc->cur_frame->return_type = MVM_RETURN_INT;
tc->cur_frame->return_address = *(tc->interp_cur_op);
tc->cur_frame->args[0].o = obj;
if (flip) {
tc->cur_frame->special_return = flip_return;
tc->cur_frame->special_return_data = res_reg;
}
STABLE(code)->invoke(tc, code, get_inv_callsite(), tc->cur_frame->args);
}
else {
/* Need to set up special return hook. */
MVMObject *code = MVM_frame_find_invokee(tc, bs->method);
BoolMethReturnData *data = malloc(sizeof(BoolMethReturnData));
data->true_addr = true_addr;
data->false_addr = false_addr;
data->flip = flip;
tc->cur_frame->special_return = boolify_return;
tc->cur_frame->special_return_data = data;
tc->cur_frame->return_value = &data->res_reg;
tc->cur_frame->return_type = MVM_RETURN_INT;
tc->cur_frame->return_address = *(tc->interp_cur_op);
tc->cur_frame->args[0].o = obj;
STABLE(code)->invoke(tc, code, get_inv_callsite(), tc->cur_frame->args);
return;
}
break;
case MVM_BOOL_MODE_UNBOX_INT:
result = !IS_CONCRETE(obj) || REPR(obj)->box_funcs->get_int(tc, STABLE(obj), obj, OBJECT_BODY(obj)) == 0 ? 0 : 1;
break;
case MVM_BOOL_MODE_UNBOX_NUM:
result = !IS_CONCRETE(obj) || REPR(obj)->box_funcs->get_num(tc, STABLE(obj), obj, OBJECT_BODY(obj)) == 0.0 ? 0 : 1;
break;
case MVM_BOOL_MODE_UNBOX_STR_NOT_EMPTY:
result = !IS_CONCRETE(obj) || NUM_GRAPHS(REPR(obj)->box_funcs->get_str(tc, STABLE(obj), obj, OBJECT_BODY(obj))) == 0 ? 0 : 1;
break;
case MVM_BOOL_MODE_UNBOX_STR_NOT_EMPTY_OR_ZERO: {
MVMString *str;
if (!IS_CONCRETE(obj)) {
result = 0;
break;
}
str = REPR(obj)->box_funcs->get_str(tc, STABLE(obj), obj, OBJECT_BODY(obj));
result = MVM_coerce_istrue_s(tc, str);
break;
}
case MVM_BOOL_MODE_NOT_TYPE_OBJECT:
result = !IS_CONCRETE(obj) ? 0 : 1;
break;
case MVM_BOOL_MODE_ITER:
result = IS_CONCRETE(obj) ? MVM_iter_istrue(tc, (MVMIter *)obj) : 0;
break;
case MVM_BOOL_MODE_HAS_ELEMS:
result = IS_CONCRETE(obj) ? MVM_repr_elems(tc, obj) != 0 : 0;
break;
default:
MVM_exception_throw_adhoc(tc, "Invalid boolification spec mode used");
}
}
if (flip)
result = result ? 0 : 1;
if (res_reg) {
res_reg->i64 = result;
}
else {
if (result)
*(tc->interp_cur_op) = true_addr;
else
*(tc->interp_cur_op) = false_addr;
}
}
void MVM_coerce_istrue(MVMThreadContext *tc, MVMObject *obj, MVMRegister *res_reg,
MVMuint8 *true_addr, MVMuint8 *false_addr, MVMuint8 flip) {
MVMint64 result = 0;
if (!MVM_is_null(tc, obj)) {
MVMBoolificationSpec *bs = obj->st->boolification_spec;
switch (bs == NULL ? MVM_BOOL_MODE_NOT_TYPE_OBJECT : bs->mode) {
case MVM_BOOL_MODE_CALL_METHOD: {
MVMObject *code = MVM_frame_find_invokee(tc, bs->method, NULL);
MVMCallsite *inv_arg_callsite = MVM_callsite_get_common(tc, MVM_CALLSITE_ID_INV_ARG);
if (res_reg) {
/* We need to do the invocation, and set this register
* the result. Then we just do the call. For the flip
* case, just set up special return handler to flip
* the register. */
MVM_args_setup_thunk(tc, res_reg, MVM_RETURN_INT, inv_arg_callsite);
tc->cur_frame->args[0].o = obj;
if (flip) {
tc->cur_frame->special_return = flip_return;
tc->cur_frame->special_return_data = res_reg;
}
STABLE(code)->invoke(tc, code, inv_arg_callsite, tc->cur_frame->args);
}
else {
/* Need to set up special return hook. */
BoolMethReturnData *data = MVM_malloc(sizeof(BoolMethReturnData));
data->true_addr = true_addr;
data->false_addr = false_addr;
data->flip = flip;
tc->cur_frame->special_return = boolify_return;
tc->cur_frame->special_return_data = data;
MVM_args_setup_thunk(tc, &data->res_reg, MVM_RETURN_INT, inv_arg_callsite);
tc->cur_frame->args[0].o = obj;
STABLE(code)->invoke(tc, code, inv_arg_callsite, tc->cur_frame->args);
}
return;
}
case MVM_BOOL_MODE_UNBOX_INT:
result = !IS_CONCRETE(obj) || REPR(obj)->box_funcs.get_int(tc, STABLE(obj), obj, OBJECT_BODY(obj)) == 0 ? 0 : 1;
break;
case MVM_BOOL_MODE_UNBOX_NUM:
result = !IS_CONCRETE(obj) || REPR(obj)->box_funcs.get_num(tc, STABLE(obj), obj, OBJECT_BODY(obj)) == 0.0 ? 0 : 1;
break;
case MVM_BOOL_MODE_UNBOX_STR_NOT_EMPTY: {
MVMString *str;
if (!IS_CONCRETE(obj)) {
result = 0;
break;
}
str = REPR(obj)->box_funcs.get_str(tc, STABLE(obj), obj, OBJECT_BODY(obj));
result = MVM_coerce_istrue_s(tc, str);
break;
}
case MVM_BOOL_MODE_UNBOX_STR_NOT_EMPTY_OR_ZERO: {
MVMString *str;
MVMint64 chars;
if (!IS_CONCRETE(obj)) {
result = 0;
break;
}
str = REPR(obj)->box_funcs.get_str(tc, STABLE(obj), obj, OBJECT_BODY(obj));
if (str == NULL || !IS_CONCRETE(str)) {
result = 0;
break;
}
chars = MVM_string_graphs(tc, str);
result = chars == 0 ||
(chars == 1 && MVM_string_get_grapheme_at_nocheck(tc, str, 0) == 48)
? 0 : 1;
break;
}
case MVM_BOOL_MODE_NOT_TYPE_OBJECT:
result = !IS_CONCRETE(obj) ? 0 : 1;
break;
case MVM_BOOL_MODE_BIGINT:
result = IS_CONCRETE(obj) ? MVM_bigint_bool(tc, obj) : 0;
break;
case MVM_BOOL_MODE_ITER:
result = IS_CONCRETE(obj) ? MVM_iter_istrue(tc, (MVMIter *)obj) : 0;
break;
case MVM_BOOL_MODE_HAS_ELEMS:
result = IS_CONCRETE(obj) ? MVM_repr_elems(tc, obj) != 0 : 0;
break;
default:
MVM_exception_throw_adhoc(tc, "Invalid boolification spec mode used");
}
}
if (flip)
result = result ? 0 : 1;
if (res_reg) {
res_reg->i64 = result;
}
else {
if (result)
*(tc->interp_cur_op) = true_addr;
else
*(tc->interp_cur_op) = false_addr;
}
}
static void * unmarshal_callback(MVMThreadContext *tc, MVMObject *callback, MVMObject *sig_info) {
MVMNativeCallbackCacheHead *callback_data_head = NULL;
MVMNativeCallback **callback_data_handle;
MVMString *cuid;
if (!IS_CONCRETE(callback))
return NULL;
/* Try to locate existing cached callback info. */
callback = MVM_frame_find_invokee(tc, callback, NULL);
cuid = ((MVMCode *)callback)->body.sf->body.cuuid;
MVM_HASH_GET(tc, tc->native_callback_cache, cuid, callback_data_head);
if (!callback_data_head) {
callback_data_head = MVM_malloc(sizeof(MVMNativeCallbackCacheHead));
callback_data_head->head = NULL;
MVM_HASH_BIND(tc, tc->native_callback_cache, cuid, callback_data_head);
}
callback_data_handle = &(callback_data_head->head);
while (*callback_data_handle) {
if ((*callback_data_handle)->target == callback) /* found it, break */
break;
callback_data_handle = &((*callback_data_handle)->next);
}
if (!*callback_data_handle) {
/* First, build the MVMNativeCallback */
MVMCallsite *cs;
MVMObject *typehash;
MVMint64 num_info, i;
MVMNativeCallback *callback_data;
/* cb is a piece of executable memory we obtain from libffi. */
void *cb;
ffi_cif *cif;
ffi_closure *closure;
ffi_status status;
num_info = MVM_repr_elems(tc, sig_info);
/* We'll also build up a MoarVM callsite as we go. */
cs = MVM_calloc(1, sizeof(MVMCallsite));
cs->flag_count = num_info - 1;
cs->arg_flags = MVM_malloc(cs->flag_count * sizeof(MVMCallsiteEntry));
cs->arg_count = num_info - 1;
cs->num_pos = num_info - 1;
cs->has_flattening = 0;
cs->is_interned = 0;
cs->with_invocant = NULL;
callback_data = MVM_malloc(sizeof(MVMNativeCallback));
callback_data->num_types = num_info;
callback_data->typeinfos = MVM_malloc(num_info * sizeof(MVMint16));
callback_data->types = MVM_malloc(num_info * sizeof(MVMObject *));
callback_data->next = NULL;
cif = (ffi_cif *)MVM_malloc(sizeof(ffi_cif));
callback_data->convention = FFI_DEFAULT_ABI;
callback_data->ffi_arg_types = MVM_malloc(sizeof(ffi_type *) * (cs->arg_count ? cs->arg_count : 1));
/* Collect information about the return type. */
typehash = MVM_repr_at_pos_o(tc, sig_info, 0);
callback_data->types[0] = MVM_repr_at_key_o(tc, typehash, tc->instance->str_consts.typeobj);
callback_data->typeinfos[0] = MVM_nativecall_get_arg_type(tc, typehash, 1);
callback_data->ffi_ret_type = MVM_nativecall_get_ffi_type(tc, callback_data->typeinfos[0]);
for (i = 1; i < num_info; i++) {
typehash = MVM_repr_at_pos_o(tc, sig_info, i);
callback_data->types[i] = MVM_repr_at_key_o(tc, typehash, tc->instance->str_consts.typeobj);
callback_data->typeinfos[i] = MVM_nativecall_get_arg_type(tc, typehash, 0) & ~MVM_NATIVECALL_ARG_FREE_STR;
callback_data->ffi_arg_types[i - 1] = MVM_nativecall_get_ffi_type(tc, callback_data->typeinfos[i]);
switch (callback_data->typeinfos[i] & MVM_NATIVECALL_ARG_TYPE_MASK) {
case MVM_NATIVECALL_ARG_CHAR:
case MVM_NATIVECALL_ARG_SHORT:
case MVM_NATIVECALL_ARG_INT:
case MVM_NATIVECALL_ARG_LONG:
case MVM_NATIVECALL_ARG_LONGLONG:
cs->arg_flags[i - 1] = MVM_CALLSITE_ARG_INT;
break;
case MVM_NATIVECALL_ARG_UCHAR:
case MVM_NATIVECALL_ARG_USHORT:
case MVM_NATIVECALL_ARG_UINT:
case MVM_NATIVECALL_ARG_ULONG:
case MVM_NATIVECALL_ARG_ULONGLONG:
/* TODO: should probably be UINT, when we can support that. */
cs->arg_flags[i - 1] = MVM_CALLSITE_ARG_INT;
break;
case MVM_NATIVECALL_ARG_FLOAT:
case MVM_NATIVECALL_ARG_DOUBLE:
cs->arg_flags[i - 1] = MVM_CALLSITE_ARG_NUM;
break;
default:
cs->arg_flags[i - 1] = MVM_CALLSITE_ARG_OBJ;
break;
}
}
MVM_callsite_try_intern(tc, &cs);
callback_data->instance = tc->instance;
callback_data->cs = cs;
callback_data->target = callback;
status = ffi_prep_cif(cif, callback_data->convention, (unsigned int)cs->arg_count,
callback_data->ffi_ret_type, callback_data->ffi_arg_types);
closure = ffi_closure_alloc(sizeof(ffi_closure), &cb);
if (!closure)
MVM_panic(1, "Unable to allocate memory for callback closure");
ffi_prep_closure_loc(closure, cif, callback_handler, callback_data, cb);
callback_data->cb = cb;
/* Now insert the MVMCallback into the linked list. */
*callback_data_handle = callback_data;
}
return (*callback_data_handle)->cb;
}