ir_entity *be_make_va_start_entity(ir_type *const frame_type, int const offset)
{
ident *const id = new_id_from_str("$va_start");
ir_type *const unknown = get_unknown_type();
ir_entity *const va_start = new_entity(frame_type, id, unknown);
set_entity_offset(va_start, offset);
return va_start;
}
static void sparc_layout_param_entities(ir_graph *const irg, calling_convention_t *const cconv, ir_type *const non_lowered)
{
ir_entity **const param_map = be_collect_parameter_entities(irg);
ir_type *const frame_type = get_irg_frame_type(irg);
size_t const n_params = cconv->n_parameters;
/* calculate offsets/create missing entities */
for (size_t i = 0; i < n_params; ++i) {
reg_or_stackslot_t *const param = &cconv->parameters[i];
ir_entity * entity = param_map[i];
if (entity == NULL) {
if (!param->already_stored)
continue;
entity = new_parameter_entity(frame_type, i, param->type);
}
param->entity = entity;
set_entity_offset(entity, param->offset);
}
ir_entity *const function = get_irg_entity(irg);
ir_type *const function_type = get_entity_type(function);
if (is_method_variadic(function_type)) {
ir_type *unknown = get_unknown_type();
ident *id = new_id_from_str("$va_start");
ir_entity *va_start_addr = new_entity(frame_type, id, unknown);
/* sparc_variadic_fixups() fiddled with our type, find out the
* original number of parameters */
size_t const orig_n_params = get_method_n_params(non_lowered);
long offset;
if (orig_n_params < n_params) {
assert(param_map[orig_n_params] != NULL);
offset = get_entity_offset(param_map[orig_n_params]);
} else {
offset = cconv->param_stack_size + SPARC_MIN_STACKSIZE;
}
set_entity_offset(va_start_addr, offset);
cconv->va_start_addr = va_start_addr;
}
free(param_map);
}
