static int group_net_to_field(type_t type, netid_t nid)
{
int count = 0;
if (type_is_record(type)) {
const int nfields = type_fields(type);
netid_t first = 0;
for (int i = 0; i < nfields; i++) {
tree_t field = type_field(type, i);
type_t ftype = tree_type(field);
const netid_t next = first + type_width(tree_type(field));
if (nid >= first && nid < next) {
if (type_is_array(ftype) || type_is_record(ftype))
return count + group_net_to_field(ftype, nid - first);
else
return count;
}
first = next;
count += type_width(ftype);
}
fatal_trace("group_net_to_field failed to find field for nid=%d type=%s",
nid, type_pp(type));
}
else if (type_is_array(type)) {
type_t elem = type_elem(type);
const int width = type_width(elem);
if (type_is_record(elem))
return (nid / width) * width + group_net_to_field(elem, nid % width);
else
return group_net_to_field(elem, nid % width);
}
else
return 0;
}
static tree_t elab_port_to_signal(tree_t arch, tree_t port, tree_t actual)
{
assert(tree_kind(port) == T_PORT_DECL);
ident_t name = tree_ident(port);
const int ndecls = tree_decls(arch);
for (int i = 0; i < ndecls; i++) {
tree_t d = tree_decl(arch, i);
if (tree_ident(d) == name)
return d;
}
type_t port_type = tree_type(port);
type_t actual_type = tree_type(actual);
type_t type = (type_is_unconstrained(port_type)) ? actual_type : port_type;
port_mode_t mode = tree_subkind(port);
tree_t s = tree_new(T_SIGNAL_DECL);
tree_set_ident(s, tree_ident(port));
tree_set_type(s, type);
tree_add_attr_int(s, fst_dir_i, mode);
tree_set_loc(s, tree_loc(port));
tree_set_flag(s, tree_flags(port) & TREE_F_LAST_VALUE);
if ((mode == PORT_OUT) || (mode == PORT_INOUT) || (mode == PORT_BUFFER)) {
if (tree_has_value(port))
tree_add_attr_tree(s, driver_init_i, tree_value(port));
}
tree_add_decl(arch, s);
return s;
}
static void group_decl(tree_t decl, group_nets_ctx_t *ctx, int start, int n)
{
netid_t first = NETID_INVALID;
unsigned len = 0;
type_t type = tree_type(decl);
const int nnets = tree_nets(decl);
const bool record = group_contains_record(type);
int ffield = -1;
assert((n == -1) | (start + n <= nnets));
for (int i = start; i < (n == -1 ? nnets : start + n); i++) {
netid_t nid = tree_net(decl, i);
if (first == NETID_INVALID) {
first = nid;
len = 1;
ffield = record ? group_net_to_field(type, i) : -1;
}
else if (nid == first + len
&& (!record || group_net_to_field(type, i) == ffield))
++len;
else {
group_add(ctx, first, len);
first = nid;
len = 1;
ffield = record ? group_net_to_field(type, i) : -1;
}
}
if (first != NETID_INVALID)
group_add(ctx, first, len);
else {
// Array signal with null range
tree_add_attr_int(decl, null_range_i, 1);
}
}
static tree_t get_bool_lit(tree_t t, bool v)
{
tree_t fdecl = tree_ref(t);
assert(tree_kind(fdecl) == T_FUNC_DECL);
static type_t bool_type = NULL;
if (bool_type == NULL) {
lib_t std = lib_find("std", true, true);
assert(std != NULL);
tree_t standard = lib_get(std, ident_new("STD.STANDARD"));
assert(standard != NULL);
const int ndecls = tree_decls(standard);
for (int i = 0; (i < ndecls) && (bool_type == NULL); i++) {
tree_t d = tree_decl(standard, i);
if (tree_ident(d) == std_bool_i)
bool_type = tree_type(d);
}
assert(bool_type != NULL);
}
tree_t lit = type_enum_literal(bool_type, v ? 1 : 0);
tree_t b = tree_new(T_REF);
tree_set_loc(b, tree_loc(t));
tree_set_ref(b, lit);
tree_set_type(b, bool_type);
tree_set_ident(b, tree_ident(lit));
return b;
}
static void lxt_fmt_enum(tree_t decl, watch_t *w, lxt_data_t *data)
{
uint64_t val;
rt_watch_value(w, &val, 1, false);
tree_t lit = type_enum_literal(tree_type(decl), val);
lt_emit_value_string(trace, data->sym, 0, (char *)istr(tree_ident(lit)));
}
tree_t make_ref(tree_t to)
{
tree_t t = tree_new(T_REF);
tree_set_ident(t, tree_ident(to));
tree_set_ref(t, to);
tree_set_type(t, tree_type(to));
return t;
}
static int shell_cmd_watch(ClientData cd, Tcl_Interp *interp,
int objc, Tcl_Obj *const objv[])
{
const char *help =
"watch - Trace changes to a signal\n"
"\n"
"Usage: watch SIGNALS...\n"
"\n"
"Prints a message every time an update occurs to a signal listed."
"\n"
"Examples:\n"
" watch [signals {clk}] Trace updates to all signals named clk\n";
if (show_help(objc, objv, help))
return TCL_OK;
if (objc == 1) {
warnf("nothing to watch (try -help for usage)");
return TCL_OK;
}
hash_t *decl_hash = (hash_t *)cd;
for (int i = 1; i < objc; i++) {
int length;
if (Tcl_ListObjLength(interp, objv[i], &length) != TCL_OK)
return TCL_ERROR;
for (int j = 0; j < length; j++) {
Tcl_Obj *obj;
if (Tcl_ListObjIndex(interp, objv[i], j, &obj) != TCL_OK)
return TCL_ERROR;
const char *str = Tcl_GetString(obj);
tree_t t = hash_get(decl_hash, ident_new(str));
if (t == NULL)
return tcl_error(interp, "object not found: %s", str);
if (t == NULL)
return tcl_error(interp, "object not found: %s", str);
else if (tree_kind(t) != T_SIGNAL_DECL)
return tcl_error(interp, "not a signal: %s", str);
else if (type_is_array(tree_type(t)))
return tcl_error(interp, "only scalar signals may be watched");
// TODO: make this work for arrays
slave_watch_msg_t msg = {
.index = tree_index(t)
};
slave_post_msg(SLAVE_WATCH, &msg, sizeof(msg));
}
}
return TCL_OK;
}
tree_t get_real_lit(tree_t t, double r)
{
tree_t f = tree_new(T_LITERAL);
tree_set_loc(f, tree_loc(t));
tree_set_subkind(f, L_REAL);
tree_set_dval(f, r);
tree_set_type(f, tree_type(t));
return f;
}
tree_t get_int_lit(tree_t t, int64_t i)
{
tree_t f = tree_new(T_LITERAL);
tree_set_subkind(f, L_INT);
tree_set_ival(f, i);
tree_set_loc(f, tree_loc(t));
tree_set_type(f, tree_type(t));
return f;
}
static void fst_fmt_enum(tree_t decl, watch_t *w, fst_data_t *data)
{
uint64_t val;
rt_watch_value(w, &val, 1, false);
tree_t lit = type_enum_literal(tree_type(decl), val);
const char *str = istr(tree_ident(lit));
fstWriterEmitVariableLengthValueChange(
fst_ctx, data->handle, str, strlen(str));
}
/// Is the block b readable by the grid readers?
inline bool is_readable(io::json const& b) {
string type_str = io::read_field(b, "type", HM3_AT_);
if (type_str == tree_type()) {
return true;
// } else if (type_str == single_type()) {
// return true;
} else if (type_str == multi_type()) {
return true;
} else {
return false;
}
}
tree_t get_bool_lit(tree_t t, bool v)
{
type_t bool_type = tree_type(t);
tree_t lit = type_enum_literal(bool_type, v ? 1 : 0);
tree_t b = tree_new(T_REF);
tree_set_loc(b, tree_loc(t));
tree_set_ref(b, lit);
tree_set_type(b, bool_type);
tree_set_ident(b, tree_ident(lit));
return b;
}
bool folded_bool(tree_t t, bool *b)
{
if (tree_kind(t) == T_REF) {
tree_t decl = tree_ref(t);
if (tree_kind(decl) == T_ENUM_LIT
&& type_ident(tree_type(decl)) == std_bool_i) {
*b = (tree_pos(decl) == 1);
return true;
}
}
return false;
}
type_t index_type_of(type_t type, int dim)
{
if (type_is_unconstrained(type))
return type_index_constr(type_base_recur(type), dim);
else if (type_kind(type) == T_ENUM)
return type;
else {
tree_t left = type_dim(type, dim).left;
// If the left bound has not been assigned a type then there is some
// error with it so just return a dummy type here
return tree_has_type(left) ? tree_type(left) : type;
}
}
tree_t find_record_field(tree_t rref)
{
ident_t fname = tree_ident(rref);
type_t value_type = tree_type(tree_value(rref));
const int nfields = type_fields(value_type);
for (int i = 0; i < nfields; i++) {
tree_t field = type_field(value_type, i);
if (tree_ident(field) == fname)
return field;
}
return NULL;
}
bool folded_bool(tree_t t, bool *b)
{
ident_t std_bool_i = ident_new("STD.STANDARD.BOOLEAN");
if (tree_kind(t) == T_REF) {
tree_t decl = tree_ref(t);
if (tree_kind(decl) == T_ENUM_LIT
&& type_ident(tree_type(decl)) == std_bool_i) {
*b = (tree_pos(decl) == 1);
return true;
}
}
return false;
}
int record_field_to_net(type_t type, ident_t name)
{
int offset = 0;
const int nfields = type_fields(type);
for (int i = 0; i < nfields; i++) {
tree_t field = type_field(type, i);
if (tree_ident(field) == name)
return offset;
else
offset += type_width(tree_type(field));
}
assert(false);
}
static STATEMENT *reduce_statement(MODULE *module, FUNCTION *func, BLOCK *block, STATEMENT *stmt)
{
if (stmt == NULL)
return stmt;
if (tree_is_type(stmt, STMT_ASSIGN))
{
EXPRESSION *expr = tree_get_child(stmt, 1);
expr = simplify_expression(module, func, block, expr, stmt);
tree_get_child(stmt, 1) = expr;
}
else if (tree_is_type(stmt, STMT_IF))
{
EXPRESSION *cond = tree_get_child(stmt, 0);
cond = simplify_expression(module, func, block, cond, stmt);
tree_get_child(stmt, 0) = cond;
reduce_block(module, func, tree_get_child(stmt, 1));
reduce_block(module, func, tree_get_child(stmt, 2));
}
else if (tree_is_type(stmt, STMT_WHILE))
{
EXPRESSION *cond = tree_get_child(stmt, 0);
BLOCK *body = tree_get_child(stmt, 1);
if (!is_atomic(cond))
{
EXPRESSION *old_cond = cond;
cond = atomise_expression(module, func, block, cond, stmt);
tree_get_child(stmt, 0) = cond;
STATEMENT *new_assign = make_assignment(cond, CAST_TO_EXPRESSION(tree_copy(old_cond)), CAST_TO_AST(cond)->source_line);
tree_add_child(body, new_assign);
}
reduce_block(module, func, body);
}
else if (tree_is_type(stmt, STMT_RETURN))
{
EXPRESSION *expr = tree_get_child(stmt, 0);
expr = atomise_expression(module, func, block, expr, stmt);
tree_get_child(stmt, 0) = expr;
}
else if (tree_is_type(stmt, STMT_RESTART))
{
/* Do nothing. */
}
else
error("Not sure how to reduce statement of type %d\n", tree_type(stmt));
return stmt;
}
static tree_t rewrite_refs(tree_t t, void *context)
{
rewrite_params_t *params = context;
if (tree_kind(t) != T_REF)
return t;
tree_t decl = tree_ref(t);
for (int i = 0; i < params->count; i++) {
if (decl != params->formals[i])
continue;
// Do not rewrite references if they appear as formal names
if (tree_attr_int(t, formal_i, 0))
continue;
// Skip assignments to OPEN ports
if (params->actuals[i] == NULL)
continue;
switch (tree_kind(params->actuals[i])) {
case T_SIGNAL_DECL:
case T_ENUM_LIT:
tree_set_ref(t, params->actuals[i]);
tree_set_type(t, tree_type(params->actuals[i]));
return t;
case T_LITERAL:
case T_AGGREGATE:
case T_REF:
case T_ARRAY_SLICE:
case T_ARRAY_REF:
case T_FCALL:
case T_CONCAT:
return params->actuals[i];
case T_TYPE_CONV:
// XXX: this only works in trivial cases
return tree_value(tree_param(params->actuals[i], 0));
default:
fatal_at(tree_loc(params->actuals[i]), "cannot handle tree kind %s "
"in rewrite_refs",
tree_kind_str(tree_kind(params->actuals[i])));
}
}
return t;
}
char *get_escaped_op_symbol(EXPRESSION *expr)
{
switch (tree_type(expr))
{
case EXPR_LEQ:
return "<=";
case EXPR_GEQ:
return ">=";
case EXPR_LT:
return "<";
case EXPR_GT:
return ">";
case EXPR_AND:
return "&&";
default:
return get_op_symbol(expr);
}
}
static void group_target(tree_t t, group_nets_ctx_t *ctx)
{
switch (tree_kind(t)) {
case T_REF:
group_ref(t, ctx, 0, -1);
break;
case T_ARRAY_REF:
case T_ARRAY_SLICE:
case T_RECORD_REF:
{
type_t type = tree_type(t);
if (!type_known_width(type))
ungroup_name(t, ctx);
else if (!group_name(t, ctx, 0, type_width(type)))
ungroup_name(t, ctx);
}
break;
case T_LITERAL:
case T_OPEN:
// Constant folding can cause this to appear
break;
case T_AGGREGATE:
{
const int nassocs = tree_assocs(t);
for (int i = 0; i < nassocs; i++)
group_target(tree_value(tree_assoc(t, i)), ctx);
}
break;
default:
fmt_loc(stdout, tree_loc(t));
fatal_trace("Cannot handle tree kind %s in group_target",
tree_kind_str(tree_kind(t)));
}
}
unsigned type_width(type_t type)
{
if (type_is_array(type)) {
const unsigned elem_w = type_width(type_elem(type));
unsigned w = 1;
const int ndims = type_dims(type);
for (int i = 0; i < ndims; i++) {
int64_t low, high;
range_bounds(type_dim(type, i), &low, &high);
w *= MAX(high - low + 1, 0) * elem_w;
}
return w;
}
else if (type_is_record(type)) {
type_t base = type_base_recur(type);
unsigned w = 0;
const int nfields = type_fields(base);
for (int i = 0; i < nfields; i++)
w += type_width(tree_type(type_field(base, i)));
return w;
}
else
return 1;
}
END_TEST
START_TEST(test_lib_save)
{
{
tree_t ent = tree_new(T_ENTITY);
tree_set_ident(ent, ident_new("name"));
tree_add_attr_str(ent, ident_new("attr"), ident_new("test string"));
type_t e = type_new(T_ENUM);
type_set_ident(e, ident_new("myenum"));
tree_t a = tree_new(T_ENUM_LIT);
tree_set_ident(a, ident_new("a"));
tree_set_type(a, e);
tree_set_pos(a, 55);
type_enum_add_literal(e, a);
tree_t b = tree_new(T_ENUM_LIT);
tree_set_ident(b, ident_new("b"));
tree_set_type(b, e);
type_enum_add_literal(e, b);
tree_t p1 = tree_new(T_PORT_DECL);
tree_set_ident(p1, ident_new("foo"));
tree_set_subkind(p1, PORT_OUT);
tree_set_type(p1, type_universal_int());
tree_add_port(ent, p1);
tree_t p2 = tree_new(T_PORT_DECL);
tree_set_ident(p2, ident_new("bar"));
tree_set_subkind(p2, PORT_IN);
tree_set_type(p2, e);
tree_add_port(ent, p2);
tree_t ar = tree_new(T_ARCH);
tree_set_ident(ar, ident_new("arch"));
tree_set_ident2(ar, ident_new("foo"));
tree_t pr = tree_new(T_PROCESS);
tree_set_ident(pr, ident_new("proc"));
tree_add_stmt(ar, pr);
tree_t v1 = tree_new(T_VAR_DECL);
tree_set_ident(v1, ident_new("v1"));
tree_set_type(v1, e);
tree_t r = tree_new(T_REF);
tree_set_ident(r, ident_new("v1"));
tree_set_ref(r, v1);
tree_t s = tree_new(T_VAR_ASSIGN);
tree_set_ident(s, ident_new("var_assign"));
tree_set_target(s, r);
tree_set_value(s, r);
tree_add_stmt(pr, s);
tree_t c = tree_new(T_LITERAL);
tree_set_subkind(c, L_INT);
tree_set_ival(c, 53);
tree_t s2 = tree_new(T_VAR_ASSIGN);
tree_set_ident(s2, ident_new("var_assign"));
tree_set_target(s2, r);
tree_set_value(s2, c);
tree_add_stmt(pr, s2);
tree_t s3 = tree_new(T_VAR_ASSIGN);
tree_set_ident(s3, ident_new("var_assign"));
tree_set_target(s3, r);
tree_set_value(s3, str_to_agg("foobar", NULL));
tree_add_stmt(pr, s3);
tree_t s4 = tree_new(T_ASSERT);
tree_set_ident(s4, ident_new("assert"));
tree_set_value(s4, c);
tree_set_severity(s4, c);
tree_set_message(s4, str_to_agg("message", NULL));
tree_add_stmt(pr, s4);
lib_put(work, ar);
lib_put(work, ent);
}
tree_gc();
lib_save(work);
lib_free(work);
lib_add_search_path("/tmp");
work = lib_find(ident_new("test_lib"), false);
fail_if(work == NULL);
{
tree_t ent = lib_get(work, ident_new("name"));
fail_if(ent == NULL);
fail_unless(tree_kind(ent) == T_ENTITY);
fail_unless(tree_ident(ent) == ident_new("name"));
fail_unless(tree_ports(ent) == 2);
ident_t attr = tree_attr_str(ent, ident_new("attr"));
fail_if(attr == NULL);
fail_unless(icmp(attr, "test string"));
tree_t p1 = tree_port(ent, 0);
fail_unless(tree_kind(p1) == T_PORT_DECL);
fail_unless(tree_subkind(p1) == PORT_OUT);
fail_unless(type_kind(tree_type(p1)) == T_INTEGER);
tree_t p2 = tree_port(ent, 1);
fail_unless(tree_kind(p2) == T_PORT_DECL);
fail_unless(tree_subkind(p2) == PORT_IN);
type_t e = tree_type(p2);
fail_unless(type_kind(e) == T_ENUM);
fail_unless(type_enum_literals(e) == 2);
tree_t a = type_enum_literal(e, 0);
fail_unless(tree_kind(a) == T_ENUM_LIT);
fail_unless(tree_ident(a) == ident_new("a"));
fail_unless(tree_type(a) == e);
fail_unless(tree_pos(a) == 55);
tree_t b = type_enum_literal(e, 1);
fail_unless(tree_kind(b) == T_ENUM_LIT);
fail_unless(tree_ident(b) == ident_new("b"));
fail_unless(tree_type(b) == e);
tree_t ar = lib_get(work, ident_new("arch"));
fail_if(ar == NULL);
fail_unless(tree_ident(ar) == ident_new("arch"));
fail_unless(tree_ident2(ar) == ident_new("foo"));
tree_t pr = tree_stmt(ar, 0);
fail_unless(tree_kind(pr) == T_PROCESS);
fail_unless(tree_ident(pr) == ident_new("proc"));
tree_t s = tree_stmt(pr, 0);
fail_unless(tree_kind(s) == T_VAR_ASSIGN);
tree_t r = tree_target(s);
fail_unless(tree_kind(r) == T_REF);
fail_unless(tree_value(s) == r);
tree_t s2 = tree_stmt(pr, 1);
fail_unless(tree_kind(s2) == T_VAR_ASSIGN);
fail_unless(tree_target(s2) == r);
tree_t s3 = tree_stmt(pr, 2);
fail_unless(tree_kind(s3) == T_VAR_ASSIGN);
fail_unless(tree_target(s3) == r);
fail_unless(tree_kind(tree_value(s3)) == T_AGGREGATE);
tree_t s4 = tree_stmt(pr, 3);
fail_unless(tree_kind(s4) == T_ASSERT);
fail_unless(tree_ident(s4) == ident_new("assert"));
tree_t c = tree_value(s2);
fail_unless(tree_kind(c) == T_LITERAL);
fail_unless(tree_subkind(c) == L_INT);
fail_unless(tree_ival(c) == 53);
// Type declaration and reference written to different units
// so two copies of the type declaration will be read back
// hence can't check for pointer equality here
fail_unless(type_eq(tree_type(tree_ref(r)), e));
}
}
static void vcd_process_signal(tree_t d, int *next_key)
{
type_t type = tree_type(d);
type_t base = type_base_recur(type);
vcd_data_t *data = xmalloc(sizeof(vcd_data_t));
memset(data, '\0', sizeof(vcd_data_t));
int msb = 0, lsb = 0;
if (type_is_array(type)) {
if (type_dims(type) > 1) {
warn_at(tree_loc(d), "cannot represent multidimensional arrays "
"in VCD format");
free(data);
return;
}
range_t r = type_dim(type, 0);
int64_t low, high;
range_bounds(r, &low, &high);
data->dir = r.kind;
data->size = high - low + 1;
msb = assume_int(r.left);
lsb = assume_int(r.right);
type_t elem = type_elem(type);
if (!vcd_can_fmt_chars(elem, data)) {
warn_at(tree_loc(d), "cannot represent arrays of type %s "
"in VCD format", type_pp(elem));
free(data);
return;
}
}
else {
switch (type_kind(base)) {
case T_INTEGER:
{
int64_t low, high;
range_bounds(type_dim(type, 0), &low, &high);
data->size = ilog2(high - low + 1);
data->fmt = vcd_fmt_int;
}
break;
case T_ENUM:
if (vcd_can_fmt_chars(type, data)) {
data->size = 1;
break;
}
// Fall-through
default:
warn_at(tree_loc(d), "cannot represent type %s in VCD format",
type_pp(type));
free(data);
return;
}
}
const char *name_base = strrchr(istr(tree_ident(d)), ':') + 1;
const size_t base_len = strlen(name_base);
char name[base_len + 64];
strncpy(name, name_base, base_len + 64);
if (type_is_array(type))
snprintf(name + base_len, 64, "[%d:%d]\n", msb, lsb);
tree_add_attr_ptr(d, vcd_data_i, data);
data->watch = rt_set_event_cb(d, vcd_event_cb, data, true);
vcd_key_fmt(*next_key, data->key);
fprintf(vcd_file, "$var reg %d %s %s $end\n",
(int)data->size, data->key, name);
++(*next_key);
}
void lxt_restart(void)
{
if (trace == NULL)
return;
lt_set_timescale(trace, -15);
lt_symbol_bracket_stripping(trace, 0);
lt_set_clock_compress(trace);
const int ndecls = tree_decls(lxt_top);
for (int i = 0; i < ndecls; i++) {
tree_t d = tree_decl(lxt_top, i);
if (tree_kind(d) != T_SIGNAL_DECL)
continue;
else if (!wave_should_dump(d))
continue;
type_t type = tree_type(d);
int rows, msb, lsb;
if (type_is_array(type)) {
rows = type_dims(type) - 1;
if ((rows > 0) || type_is_array(type_elem(type))) {
warn_at(tree_loc(d), "cannot emit arrays of greater than one "
"dimension or arrays of arrays in LXT yet");
continue;
}
range_t r = type_dim(type, 0);
msb = assume_int(r.left);
lsb = assume_int(r.right);
}
else {
rows = 0;
msb = lsb = -1;
}
lxt_data_t *data = xmalloc(sizeof(lxt_data_t));
memset(data, '\0', sizeof(lxt_data_t));
int flags = 0;
if (type_is_array(type)) {
// Only arrays of CHARACTER, BIT, STD_ULOGIC are supported
type_t elem = type_base_recur(type_elem(type));
if ((type_kind(elem) != T_ENUM)
|| !lxt_can_fmt_enum_chars(elem, data, &flags)) {
warn_at(tree_loc(d), "cannot represent arrays of type %s "
"in LXT format", type_pp(elem));
free(data);
continue;
}
data->dir = type_dim(type, 0).kind;
}
else {
type_t base = type_base_recur(type);
switch (type_kind(base)) {
case T_INTEGER:
data->fmt = lxt_fmt_int;
flags = LT_SYM_F_INTEGER;
break;
case T_ENUM:
if (!lxt_can_fmt_enum_chars(base, data, &flags)) {
data->fmt = lxt_fmt_enum;
flags = LT_SYM_F_STRING;
}
break;
default:
warn_at(tree_loc(d), "cannot represent type %s in LXT format",
type_pp(type));
free(data);
continue;
}
}
char *name = lxt_fmt_name(d);
data->sym = lt_symbol_add(trace, name, rows, msb, lsb, flags);
free(name);
tree_add_attr_ptr(d, lxt_data_i, data);
watch_t *w = rt_set_event_cb(d, lxt_event_cb, data, true);
(*data->fmt)(d, w, data);
}
last_time = (lxttime_t)-1;
}
static int shell_cmd_show(ClientData cd, Tcl_Interp *interp,
int objc, Tcl_Obj *const objv[])
{
const char *help =
"show - Display simulation objects\n"
"\n"
"Usage: show LIST...\n"
"\n"
"Prints a representation of each simulation object in LIST. Typically\n"
"this will be a list of signal names and the output will show their\n"
"current value.\n"
"\n"
"Examples:\n"
" show {:top:foo} Print value of signal :top_foo\n"
" show [signals] Print value of all signals\n";
if (show_help(objc, objv, help))
return TCL_OK;
if (objc == 1) {
warnf("nothing to show (try -help for usage)");
return TCL_OK;
}
hash_t *decl_hash = (hash_t *)cd;
for (int i = 1; i < objc; i++) {
int length;
if (Tcl_ListObjLength(interp, objv[i], &length) != TCL_OK)
return TCL_ERROR;
for (int j = 0; j < length; j++) {
Tcl_Obj *obj;
if (Tcl_ListObjIndex(interp, objv[i], j, &obj) != TCL_OK)
return TCL_ERROR;
const char *str = Tcl_GetString(obj);
tree_t t = hash_get(decl_hash, ident_new(str));
if (t == NULL)
return tcl_error(interp, "object not found: %s", str);
tree_kind_t kind = tree_kind(t);
switch (kind) {
case T_SIGNAL_DECL:
{
const size_t len = tree_nets(t);
uint64_t *values LOCAL = xmalloc(len * sizeof(uint64_t));
rt_signal_value(t, values, len);
const char *type_str = type_pp(tree_type(t));
const char *short_name = strrchr(type_str, '.');
LOCAL_TEXT_BUF values_tb = pprint(t, values, len);
printf("%-30s%-20s%s\n",
str,
(short_name != NULL ? short_name + 1 : type_str),
tb_get(values_tb));
}
break;
default:
return tcl_error(interp, "cannot show tree kind %s",
tree_kind_str(kind));
}
}
}
return TCL_OK;
}
static void fst_process_signal(tree_t d)
{
type_t type = tree_type(d);
type_t base = type_base_recur(type);
fst_data_t *data = xmalloc(sizeof(fst_data_t));
memset(data, '\0', sizeof(fst_data_t));
int msb = 0, lsb = 0;
enum fstVarType vt;
enum fstSupplementalDataType sdt;
if (type_is_array(type)) {
if (type_dims(type) > 1) {
warn_at(tree_loc(d), "cannot represent multidimensional arrays "
"in FST format");
free(data);
return;
}
range_t r = type_dim(type, 0);
int64_t low, high;
range_bounds(r, &low, &high);
data->dir = r.kind;
data->size = high - low + 1;
msb = assume_int(r.left);
lsb = assume_int(r.right);
type_t elem = type_elem(type);
if (!fst_can_fmt_chars(elem, data, &vt, &sdt)) {
warn_at(tree_loc(d), "cannot represent arrays of type %s "
"in FST format", type_pp(elem));
free(data);
return;
}
else {
ident_t ident = type_ident(base);
if (ident == unsigned_i)
sdt = FST_SDT_VHDL_UNSIGNED;
else if (ident == signed_i)
sdt = FST_SDT_VHDL_SIGNED;
}
}
else {
switch (type_kind(base)) {
case T_INTEGER:
{
ident_t ident = type_ident(type);
if (ident == natural_i)
sdt = FST_SDT_VHDL_NATURAL;
else if (ident == positive_i)
sdt = FST_SDT_VHDL_POSITIVE;
else
sdt = FST_SDT_VHDL_INTEGER;
int64_t low, high;
range_bounds(type_dim(type, 0), &low, &high);
vt = FST_VT_VCD_INTEGER;
data->size = ilog2(high - low + 1);
data->fmt = fst_fmt_int;
}
break;
case T_ENUM:
if (!fst_can_fmt_chars(type, data, &vt, &sdt)) {
ident_t ident = type_ident(base);
if (ident == std_bool_i)
sdt = FST_SDT_VHDL_BOOLEAN;
else if (ident == std_char_i)
sdt = FST_SDT_VHDL_CHARACTER;
else
sdt = FST_SDT_NONE;
vt = FST_VT_GEN_STRING;
data->size = 0;
data->fmt = fst_fmt_enum;
}
else
data->size = 1;
break;
case T_PHYSICAL:
{
sdt = FST_SDT_NONE;
vt = FST_VT_GEN_STRING;
data->size = 0;
data->type.units = fst_make_unit_map(type);
data->fmt = fst_fmt_physical;
}
break;
default:
warn_at(tree_loc(d), "cannot represent type %s in FST format",
type_pp(type));
free(data);
return;
}
}
enum fstVarDir dir = FST_VD_IMPLICIT;
switch (tree_attr_int(d, fst_dir_i, -1)) {
case PORT_IN: dir = FST_VD_INPUT; break;
case PORT_OUT: dir = FST_VD_OUTPUT; break;
case PORT_INOUT: dir = FST_VD_INOUT; break;
case PORT_BUFFER: dir = FST_VD_BUFFER; break;
}
const char *name_base = strrchr(istr(tree_ident(d)), ':') + 1;
const size_t base_len = strlen(name_base);
char name[base_len + 64];
strncpy(name, name_base, base_len + 64);
if (type_is_array(type))
snprintf(name + base_len, 64, "[%d:%d]\n", msb, lsb);
data->handle = fstWriterCreateVar2(
fst_ctx,
vt,
dir,
data->size,
name,
0,
type_pp(type),
FST_SVT_VHDL_SIGNAL,
sdt);
tree_add_attr_ptr(d, fst_data_i, data);
data->watch = rt_set_event_cb(d, fst_event_cb, data, true);
}
static int shell_cmd_show(ClientData cd, Tcl_Interp *interp,
int objc, Tcl_Obj *const objv[])
{
const char *help =
"show - Display simulation objects\n"
"\n"
"Usage: show LIST...\n"
"\n"
"Prints a representation of each simulation object in LIST. Typically\n"
"this will be a list of signal names and the output will show their\n"
"current value.\n"
"\n"
"Examples:\n"
" show {:top:foo} Print value of signal :top_foo\n"
" show [signals] Print value of all signals\n";
if (show_help(objc, objv, help))
return TCL_OK;
if (objc == 1) {
warnf("nothing to show (try -help for usage)");
return TCL_OK;
}
hash_t *decl_hash = (hash_t *)cd;
for (int i = 1; i < objc; i++) {
int length;
if (Tcl_ListObjLength(interp, objv[i], &length) != TCL_OK)
return TCL_ERROR;
for (int j = 0; j < length; j++) {
Tcl_Obj *obj;
if (Tcl_ListObjIndex(interp, objv[i], j, &obj) != TCL_OK)
return TCL_ERROR;
const char *str = Tcl_GetString(obj);
tree_t t = hash_get(decl_hash, ident_new(str));
if (t == NULL)
return tcl_error(interp, "object not found: %s", str);
tree_kind_t kind = tree_kind(t);
switch (kind) {
case T_SIGNAL_DECL:
{
size_t len = 1;
type_t type = tree_type(t);
while (type_is_array(type)) {
int64_t low = 0, high = 0;
range_bounds(type_dim(type, 0), &low, &high);
len *= (high - low + 1);
type = type_elem(type);
}
slave_read_signal_msg_t msg = {
.index = tree_index(t),
.len = len
};
slave_post_msg(SLAVE_READ_SIGNAL, &msg, sizeof(msg));
const size_t rsz =
sizeof(reply_read_signal_msg_t)
+ (msg.len * sizeof(uint64_t));
reply_read_signal_msg_t *reply = xmalloc(rsz);
slave_get_reply(REPLY_READ_SIGNAL, reply, rsz);
const char *type_str = type_pp(type);
const char *short_name = strrchr(type_str, '.');
printf("%-30s%-20s%s\n",
str,
(short_name != NULL ? short_name + 1 : type_str),
pprint(t, reply->values, msg.len));
free(reply);
}
break;
default:
return tcl_error(interp, "cannot show tree kind %s",
tree_kind_str(kind));
}
}
}
return TCL_OK;
}
static bool group_name(tree_t target, group_nets_ctx_t *ctx, int start, int n)
{
switch (tree_kind(target)) {
case T_REF:
group_ref(target, ctx, start, n);
return true;
case T_ARRAY_REF:
{
tree_t value = tree_value(target);
type_t type = tree_type(value);
if (type_is_unconstrained(type))
return false;
int offset = 0;
const int nparams = tree_params(target);
for (int i = 0; i < nparams; i++) {
tree_t index = tree_value(tree_param(target, i));
const int stride = type_width(type_elem(type));
if (tree_kind(index) != T_LITERAL) {
if (i > 0)
return false;
const int twidth = type_width(type);
for (int j = 0; j < twidth; j += stride)
group_name(value, ctx, start + j, n);
return true;
}
else {
if (i > 0) {
range_t type_r = range_of(type, i);
int64_t low, high;
range_bounds(type_r, &low, &high);
offset *= high - low + 1;
}
offset += stride * rebase_index(type, i, assume_int(index));
}
}
return group_name(value, ctx, start + offset, n);
}
case T_ARRAY_SLICE:
{
tree_t value = tree_value(target);
type_t type = tree_type(value);
if (type_is_unconstrained(type))
return false; // Only in procedure
range_t slice = tree_range(target, 0 );
if (tree_kind(slice.left) != T_LITERAL
|| tree_kind(slice.right) != T_LITERAL)
return false;
int64_t low, high;
range_bounds(slice, &low, &high);
const int64_t low0 = rebase_index(type, 0, assume_int(slice.left));
const int stride = type_width(type_elem(type));
return group_name(value, ctx, start + low0 * stride, n);
}
case T_RECORD_REF:
{
tree_t value = tree_value(target);
type_t rec = tree_type(value);
const int offset = record_field_to_net(rec, tree_ident(target));
return group_name(value, ctx, start + offset, n);
}
case T_AGGREGATE:
case T_LITERAL:
// This can appear due to assignments to open ports with a
// default value
return true;
default:
fatal_at(tree_loc(target), "tree kind %s not yet supported for offset "
"calculation", tree_kind_str(tree_kind(target)));
}
}
static tree_t elab_signal_port(tree_t arch, tree_t formal, tree_t param,
map_list_t **maps)
{
assert(tree_kind(param) == T_PARAM);
tree_t actual = tree_value(param);
// NULL name means associate the whole port
tree_t name = NULL;
if (tree_subkind(param) == P_NAMED) {
tree_t n = tree_name(param);
if (tree_kind(n) != T_REF)
name = n;
}
const bool partial_map = name != NULL;
switch (tree_kind(actual)) {
case T_REF:
case T_ARRAY_REF:
case T_ARRAY_SLICE:
case T_RECORD_REF:
{
// Replace the formal port with a signal and connect its nets to
// those of the actual
tree_t ref = actual;
tree_kind_t ref_kind;
while ((ref_kind = tree_kind(ref)) != T_REF) {
if ((ref_kind == T_AGGREGATE) || (ref_kind == T_LITERAL))
return actual;
else
ref = tree_value(ref);
}
tree_t decl = tree_ref(ref);
tree_kind_t decl_kind = tree_kind(decl);
if (decl_kind == T_SIGNAL_DECL) {
tree_t s = elab_port_to_signal(arch, formal, actual);
if (partial_map)
tree_add_attr_int(s, partial_map_i, 1);
map_list_t *m = xmalloc(sizeof(map_list_t));
m->next = *maps;
m->formal = formal;
m->actual = actual;
m->signal = s;
m->name = name;
*maps = m;
return s;
}
else if (decl_kind == T_PORT_DECL)
return NULL; // Port was OPEN at a higher level
else
return actual;
}
case T_LITERAL:
case T_AGGREGATE:
{
type_t formal_type = tree_type(formal);
if (!type_is_unconstrained(formal_type))
tree_set_type(actual, formal_type);
return actual;
}
case T_OPEN:
return NULL;
case T_TYPE_CONV:
// Only allow simple array type conversions for now
{
type_t to_type = tree_type(actual);
type_t from_type = tree_type(tree_value(tree_param(actual, 0)));
if (type_is_array(to_type) && type_is_array(from_type))
return actual;
else
fatal_at(tree_loc(actual), "sorry, this form of type conversion "
"is not supported as an actual");
}
default:
fatal_at(tree_loc(actual), "tree %s not supported as actual",
tree_kind_str(tree_kind(actual)));
}
}
