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vl_write.c

Last change on this file was 18, checked in by cecile, 13 years ago
vl2mv added
File size: 161.6 KB

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1	/*
2
3	Copyright (c) 1992, 1993
4	Regents of the University of California
5	All rights reserved.
6
7	Use and copying of this software and preparation of derivative works
8	based upon this software are permitted. However, any distribution of
9	this software or derivative works must include the above copyright
10	notice.
11
12	This software is made available AS IS, and neither the Electronics
13	Research Laboratory or the Universify of California make any
14	warranty about the software, its performance or its conformity to
15	any specification.
16
17	Author: Szu-Tsung Cheng, stcheng@ic.Berkeley.EDU
18	10/92
19	10/93
20
21	$Id: vl_write.c,v 1.6 2009/03/09 20:25:58 fabio Exp $
22
23
24	*/
25
26
27	#include <stdio.h>
28	#include <math.h>
29	#include "util.h"
30	#include "st.h"
31	#include "array.h"
32	#include "list.h"
33	#include "set.h"
34	#include "graph.h"
35	#include "stack.h"
36	#include "set.h"
37	#include "vl_types.h"
38	#include "vl_defs.h"
39	#include "vlr_int.h"
40	#include "vl_create.h"
41	#include "vl_traverse.h"
42	#include "vl_write.h"
43	#include "vl_write_util.h"
44	#include "vl_fg_defs.h"
45	#include "vl_fg_types.h"
46	#include "vl_flowgraph.h"
47	#include "vl_mux.h"
48	#include "vl_vardecl.h"
49	#include "vl_edgedetector.h"
50	#include "vl_nonblock.h"
51	#include "verilog.h"
52	#include <stdarg.h>
53
54
55	extern vl_desc *mod_list;
56	extern int ith_module;
57	extern int dflow_analysis;
58	extern int vlTimedSystem;
59	extern int vis_nond_var;
60	extern int vis_nond;
61
62	extern int Warn_Uninitialized;
63	extern int encodeTimer;
64
65	static int WrtTrace = 0;
66	static int Being_Conditioned=0;
67	static int recordCombAlways=0;
68	static array_t *assign_array=NIL(array_t);
69	static st_table *auxSigST=NIL(st_table);
70	int dumpSyncCkt = 0;
71	int implicitClockWire = 0;
72	int vl_noTimers = 0;
73	int vl_preDeclare = 0;
74	int debug_mode = 0;
75	int Use_MV_Lib = 0;
76	int set_notation = 1;
77	int do_encoding = 0;
78	int implicitDeclare = 1;
79	int implicitClocking = 1;
80	int instantiateAll = 1;
81	int combinationalReduction = 0;
82	int chk_IncompleteBranch = 1;
83	int smartEvent = 1;
84	int wireRegister = 0;
85	int nd_check_ok = 0;
86	int compatibleChecking = 0;
87	int check_rhs_sensitivity = 1;
88	int decomposeTable = DEFAULT_MAX_TABLE_SIZE;
89	int Zconnection = 0;
90	int NoDetailedComment = 0;
91	int portPerLine = 20;
92	double vl_expr_aux1_val=(double)0;
93	double vl_expr_aux2_val=(double)0;
94	double vl_expr_aux3_val=(double)0;
95	int vl_expr_aux1_flag = 0;
96	int vl_expr_aux2_flag = 0;
97	int vl_expr_aux3_flag = 0;
98	int silent_err = 0;
99	int Vlerrno = 0;
100
101	vl_module *vl_encloseModule;
102
103	int lhs_hi, lhs_lo;
104	vl_term *lhs_term=NIL(vl_term);
105	int insideConcat=0;
106	vl_term *Initial_Signal = NIL(vl_term);
107	set_t *sensitiveList = NIL(set_t);
108	vl_term *edge_triggering = NIL(vl_term);
109	FILE *mv_file;
110	int lhs_must_be_wire = 0;
111	graph_t *vl_writeFlowGraph=NIL(graph_t);
112	stack_t vl_pauseStack = (stack_t)0;
113	lsList vl_current_pause_list = (lsList)0;
114	lsList vl_current_vars_list = (lsList)0;
115	vl_id_range *masterIdDfn = NIL(vl_id_range);
116	char *cntxt_event;
117
118	lsGen curModGen;
119	lsHandle curModHandle;
120	lsHandle *PcurModHandle;
121
122	int rst_ckt = 0;
123	int use_rst_ckt = 0;
124	int mark_sel_var = 0;
125	char *ctrl_syndrome = NIL(char);
126	lsList ctrl_list;
127	int ith_ctrl;
128	char *rst_ctrl_syndrome = NIL(char);
129	lsList rst_ctrl_list;
130	int rst_ith_ctrl;
131	st_table *vl_currentModule_combVar_st;
132
133	static int in_procedure = 0;
134	static st_table *vl_current_init_vars=NIL(st_table);
135	static st_table *final_vars=NIL(st_table);
136	array_t *cur_vars_array = NIL(array_t);
137
138	static void vl_write_function_list ARGS((FILE *file));
139	static void vl_write_formal_argument ARGS((FILE *file));
140	static void vl_write_initial_generator ARGS((FILE *file));
141	static void vl_write_timer ARGS((FILE *file, lsList graph_list));
142	static void vl_write_encoding ARGS((FILE *file));
143	static void vl_write_prim_table ARGS((FILE file, vl_primitive prim, char *edge_detectors));
144	static void instantiate_prim_latch ARGS((FILE file, st_table sig_st));
145	static void instantiate_edge_detector ARGS((FILE file, vl_primitive prim));
146	static void non_block_assignment ARGS((FILE file, st_table vars));
147	static void quasi_cont_assignment ARGS((FILE *file));
148	static void vl_write_gate_inst_list ARGS((FILE file, vl_gate_inst_list gate_list));
149	static void vl_write_tesla_timer_inst_list ARGS((FILE file, vl_gate_inst_list gate_list));
150	static void vl_write_prim_inst_list ARGS((FILE file, vl_mod_prim_inst_list priminstlist));
151	static void vl_predefine_vars ARGS((FILE file, st_table vars));
152	static void vl_timed_init_mux ARGS((FILE file, vl_term ctrl_term,
153	st_table orig_vars, st_table init_vars,
154	st_table *feedback_vars));
155	static void vl_write_prim_inst ARGS((FILE file, vl_primitive master,
156	vl_mod_prim_inst *inst));
157	static void vl_write_gate_inst ARGS((FILE file, short type, vl_gate_inst gate));
158	static void vl_write_tesla_timer_inst ARGS((FILE file, vl_gate_inst gate,
159	int lb, int ub));
160	static void vl_register_pause ARGS((vertex_t pause_node, st_table old_vars));
161	static void vl_prioritize_sequence ARGS((FILE *file, lsList vars_list,
162	lsList pause_list,
163	st_table *result_st));
164	static void vl_write_vector_red_op ARGS((FILE *file, short type,
165	vl_term *in, int inverted,
166	vl_term *out));
167
168	enum st_retval vl_write_desc(char name, char value, char *arg)
169	{
170
171	if (!Initial_Signal)
172	Initial_Signal = vl_create_term(vl_create_id_range(vlStrdup("_initial_"),NIL(vl_range)), 0, -1);
173
174	if (((typestructPtr)value)->type == ModDecl) {
175	vl_write_module(mv_file, (vl_module*)value);
176	} else if (((typestructPtr)value)->type == CombPrimDecl \|\|
177	((typestructPtr)value)->type == SeqPrimDecl) {
178	vl_write_primitive(mv_file, (vl_primitive*)value);
179	}
180
181
182	name = name;
183	arg = arg;
184	return ST_CONTINUE;
185	}
186
187	void vl_write_module(FILE file, vl_module mod)
188	{
189	char *dummy;
190
191	if (mod == NULL) return;
192	if (st_lookup(mod_list->mod_holes, mod->name->name, &dummy)) return;
193
194	ASSERT(mod->type==ModDecl, "Expecting ModDecl");
195	vl_currentModule = mod;
196	WrtTRACE("writing module\n");
197
198	ctrl_syndrome = (char*)chk_malloc(mod->syndrome_width+1);
199	memset(ctrl_syndrome, (int)'-', mod->syndrome_width);
200	ctrl_syndrome[mod->syndrome_width] = '\0';
201	rst_ctrl_syndrome = (char*)chk_malloc(mod->rst_syndrome_width+1);
202	memset(rst_ctrl_syndrome, (int)'-', mod->rst_syndrome_width);
203	rst_ctrl_syndrome[mod->rst_syndrome_width] = '\0';
204	ctrl_list = lsCreate();
205	rst_ctrl_list = lsCreate();
206	ith_ctrl = 0;
207	rst_ith_ctrl = 0;
208
209	fprintf(file, "%s %s ", HSIS_MODEL, mod->name->name);
210	vl_write_formal_argument(file);
211	fprintf(file, "\n");
212	vl_write_io_list(file);
213	vl_write_svar(file);
214	vl_write_consts(file);
215	if (vlTimedSystem \|\| !implicitClocking) {
216	vl_preDeclare = 1;
217	vl_write_timer(file, mod->flow_graphs);
218	}
219	vl_write_mod_item_list(file, mod->mod_items);
220	if (vlTimedSystem \|\| !implicitClocking) {
221	vl_preDeclare = 0;
222	vl_write_timer(file, mod->flow_graphs);
223	}
224	vl_write_initial_generator(file);
225	fprintf(file, ".end\n");
226
227	vl_write_function_list(file);
228	vl_write_encoding(file);
229	vl_currentModule = NIL(vl_module);
230
231	lsDestroy(ctrl_list, 0);
232	lsDestroy(rst_ctrl_list, 0);
233	vl_chk_free(ctrl_syndrome);
234	vl_chk_free(rst_ctrl_syndrome);
235	ctrl_syndrome = NIL(char);
236	rst_ctrl_syndrome = NIL(char);
237	}
238
239
240	void vl_write_primitive(FILE file, vl_primitive prim)
241	{
242	char *edge_detectors;
243
244	if (prim == NULL) return;
245
246	assert(prim->type==CombPrimDecl \|\| prim->type==SeqPrimDecl);
247	vl_currentPrimitive = prim;
248	vl_currentModule = (vl_module*)prim;
249	WrtTRACE("writing primitive\n");
250
251	fprintf(file, "%s %s\n", HSIS_MODEL, prim->name->name);
252	vl_write_io_list(file);
253	instantiate_prim_latch(file, prim->sig_st);
254	vl_write_svar(file);
255	edge_detectors = vl_write_prim_table_header(file, prim);
256	vl_write_prim_table(file, prim, edge_detectors);
257	instantiate_edge_detector(file, prim);
258	fprintf(file, ".end\n\n\n");
259
260	vl_currentModule = NIL(vl_module);
261	vl_currentPrimitive = NIL(vl_primitive);
262	vl_chk_free(edge_detectors);
263	}
264
265
266	static void vl_write_function_list(FILE *file)
267	{
268	st_generator *gen;
269	char *fname;
270	vl_function *func_def;
271
272	gen = st_init_gen(vl_currentModule->func_st);
273	while (st_gen(gen, (char)&fname, (char)&func_def)) {
274	vl_write_function(file, func_def);
275	}
276	st_free_gen(gen);
277	}
278
279
280	void vl_write_function(FILE file, vl_function func)
281	{
282	st_table *vars_touched;
283	array_t *vars_array;
284	vl_module *old_module;
285
286	if (func == NIL(vl_function)) return;
287
288	old_module = vl_currentModule;
289	vl_encloseModule = vl_currentModule;
290	vl_currentModule = (vl_module*)func;
291	vl_currentFunction = func;
292	vl_pauseStack = create_stack();
293	WrtTRACE("writing function\n");
294
295	vars_array = array_alloc(st_table*, 0);
296	vars_touched = st_init_table(strcmp, st_strhash);
297
298	fprintf(file, "%s %s ", HSIS_MODEL, func->name->name);
299	vl_write_formal_argument(file);
300	fprintf(file, "\n");
301
302	vl_write_io_list(file);
303	vl_write_svar(file);
304	vl_write_stmt_list(file, func->stmts, NO_MUX, NIL(vl_term), vars_touched);
305	array_insert_last(st_table*, vars_array, vars_touched);
306	func_conflict_arbitrator(file, vl_currentFunction->name,
307	vars_array);
308	fprintf(file, ".end\n\n\n");
309	vl_currentModule = old_module;
310	vl_currentFunction = NIL(vl_function);
311	vl_encloseModule = NIL(vl_module);
312	destroy_stack(vl_pauseStack, 0);
313	vl_pauseStack = (lsList)0;
314	}
315
316
317	static void vl_write_formal_argument(FILE *file)
318	{
319	}
320
321
322	void vl_write_io_list(FILE *file)
323	{
324	st_generator *gen;
325	char *key;
326	vl_id_range *id_sym;
327	int lo, hi;
328	char *dir;
329	lsGen ports_gen;
330	lsHandle port_handle, port_id_handle;
331	vl_port *port;
332	vl_id_range port_id, port_id_sym;
333	int ithItem;
334
335	fprintf(file, "%s I/O ports\n", HSIS_COMMENT);
336
337	if (vl_currentModule->flags & WithInitial)
338	if (ith_module!=0)
339	if (use_rst_ckt)
340	fprintf(file,".inputs %s\n", Initial_Signal->name->name);
341
342
343	if (vl_currentModule->ports) {
344	ports_gen = lsStart(vl_currentModule->ports);
345	while (lsNext(ports_gen,(lsGeneric*)&port,&port_handle) != LS_NOMORE) {
346	if (!vl_currentFunction) {
347	if (!port->port_exp) continue;
348	lsFirstItem(port->port_exp, (lsGeneric*)&port_id,
349	&port_id_handle);
350	} else
351	port_id = (vl_id_range*)port;
352	if (!st_lookup(vl_currentModule->sig_st,
353	port_id->name, (char**)&port_id_sym)) {
354	char buf[MAXSTRLEN];
355	yylineno = -1;
356	sprintf(buf, "port %s is not defined in module %s",
357	port_id->name, vl_currentModule->name->name);
358	compile_error(buf);
359	}
360
361	if (!(port_id_sym->flags & InPort) &&
362	!(port_id_sym->flags & OutPort)) {
363	char buf[MAXSTRLEN];
364	yylineno = -1;
365	sprintf(buf, "port %s has no direction in module %s",
366	port_id->name, vl_currentModule->name->name);
367	compile_error(buf);
368	}
369	}
370	lsFinish(ports_gen);
371	}
372
373	ithItem = 0;
374	gen = st_init_gen(vl_currentModule->sig_st);
375	while (st_gen(gen, (char)&key, (char)&id_sym)) {
376	if (!(id_sym->flags & InPort) && !(id_sym->flags & OutPort))
377	continue;
378
379	if (strstr(id_sym->name, SEP_LATCH)) continue;
380	if (strstr(id_sym->name, SEP_QUASI)) continue;
381
382
383	if (!vl_currentFunction && implicitClocking && !vlTimedSystem) {
384	if (vl_currentModule->clk) {
385	if (!strcmp(vl_currentModule->clk->expr->u.name->name,
386	key) &&
387	!vl_currentPrimitive) {
388	if (!implicitClockWire)
389	continue;
390	}
391	} else {
392	if (!strcmp(key, CLOCK)) {
393	if (!implicitClockWire)
394	continue;
395	}
396	}
397	}
398
399	dir = (id_sym->flags & InPort) ? ".inputs":".outputs";
400	if (id_sym->flags & MVar) {
401	declare_mvar_io(file, dir, id_sym);
402	} else {
403	get_hilo(id_sym, &hi, &lo);
404	if (lo > hi) {
405	declare_bin_scalar_io(file, dir, id_sym);
406	} else {
407	declare_bin_vector_io(file, dir, id_sym);
408	}
409	}
410	}
411	st_free_gen(gen);
412
413	}
414
415	void vl_write_svar(FILE *file)
416	{
417	st_generator *gen;
418	char *key;
419	vl_id_range *id_sym;
420	lsList domain;
421	int lo, hi;
422
423	gen = st_init_gen(vl_currentModule->sig_st);
424	while (st_gen(gen, &key, (char**)&id_sym)) {
425	vl_enumerator *enum_elt;
426	lsGen enum_gen;
427	lsHandle enum_handle;
428	int j;
429
430	if (str_matchtail(id_sym->name,SEP_LATCH)) continue;
431
432
433	if (!vl_currentFunction && implicitClocking && !vlTimedSystem) {
434	if (vl_currentModule->clk) {
435	if (!strcmp(vl_currentModule->clk->expr->u.name->name, key) &&
436	!vl_currentPrimitive) {
437	if (!implicitClockWire)
438	continue;
439	else
440	fprintf(file, "%s %s ;\n", SMV_CLOCK,
441	vl_currentModule->clk->expr->u.name->name);
442	}
443	}
444	}
445
446	if (!(id_sym->flags & MVar)) {
447	continue;
448	}
449
450	if (!id_sym->range) {
451	domain = id_sym->id_type->specifier->u.enum_type->domain_list;
452	get_hilo(id_sym, &hi, &lo);
453	fprintf(file, ".mv %s %d ", id_sym->name, lsLength(domain));
454	for (enum_gen=lsStart(domain), j=0;
455	lsNext(enum_gen,(lsGeneric*)&enum_elt,&enum_handle)!=
456	LS_NOMORE;
457	j++) {
458	fprintf(file, "%s ", enum_elt->name);
459	}
460	lsFinish(enum_gen);
461	fprintf(file, "\n");
462	} else {
463	int idx_hi, idx_lo, idx;
464	idx_lo = vl_eval_expr(id_sym->range->left);
465	if (id_sym->range->right)
466	idx_hi = vl_eval_expr(id_sym->range->right);
467	else
468	idx_hi = idx_lo;
469	for (idx=idx_lo; idx<=idx_hi; idx++) {
470	domain = id_sym->id_type->specifier->u.enum_type->domain_list;
471	get_hilo(id_sym, &hi, &lo);
472	fprintf(file, ".mv %s%s%d%s %d ",
473	id_sym->name, SEP_LARRAY, idx, SEP_RARRAY,
474	lsLength(domain));
475	for (enum_gen=lsStart(domain);
476	lsNext(enum_gen,(lsGeneric*)&enum_elt,&enum_handle)!=
477	LS_NOMORE;) {
478	fprintf(file, "%s ", enum_elt->name);
479	}
480	lsFinish(enum_gen);
481	fprintf(file, "\n");
482	}
483	}
484	}
485	st_free_gen(gen);
486	}
487
488	void vl_write_mod_item_list (FILE *file, lsList mitems)
489	{
490	vl_decl *item;
491	lsHandle fg_handle;
492	lsGen fg_gen;
493	array_t *vars_array;
494	st_table var_touched, final_vars;
495	st_table comb_st, tmp_st;
496	st_table *old_sensitiveList;
497
498	WrtTRACE("writing Module Items\n");
499
500	vars_array = array_alloc(st_table*, 0);
501	cur_vars_array = vars_array;
502	vl_currentModule_combVar_st = comb_st = st_init_table(strcmp, st_strhash);
503	if (mitems != (lsList)0) {
504	for (curModGen = lsStart(mitems),
505	fg_gen = lsStart(vl_currentModule->flow_graphs);
506	lsNext(curModGen, (lsGeneric*)&item, &curModHandle) !=
507	LS_NOMORE; ) {
508	PcurModHandle = &curModHandle;
509	if (((vl_decl*)item)->type == AlwaysStmt)
510	lsNext(fg_gen, (lsGeneric*)&vl_writeFlowGraph, &fg_handle);
511	else
512	vl_writeFlowGraph = NIL(graph_t);
513
514
515	old_sensitiveList = sensitiveList;
516	recordCombAlways = 0;
517
518	if ((sensitiveList=
519	fg_graph_has_one_data_detector(vl_writeFlowGraph)) &&
520	combinationalReduction && implicitClocking) {
521	vl_currentModule->combVar_st = tmp_st =
522	st_init_table(strcmp, st_strhash);
523	recordCombAlways = 1;
524	} else {
525	vl_currentModule->combVar_st = tmp_st = NIL(st_table);
526	}
527
528	var_touched = vl_write_mod_item(file, item, NIL(st_table));
529	vl_writeFlowGraph = NIL(graph_t);
530	if (var_touched) {
531	array_insert_last(st_table*, vars_array, var_touched);
532	}
533
534
535	if (!vl_currentModule->combVar_st) {
536	st_generator *gen;
537	char *key;
538	char *dummy;
539	if (var_touched) {
540	gen = st_init_gen(var_touched);
541	while (st_gen(gen, &key, (char**)&dummy))
542	if (!st_lookup(vl_currentModule->seqVar_st,
543	key, &dummy))
544	st_insert(vl_currentModule->seqVar_st,
545	key, (char*)0);
546	st_free_gen(gen);
547	}
548	}
549
550
551	if (tmp_st) {
552	if (vl_currentModule->combVar_st) {
553
554	st_generator *gen;
555	vl_id_range *id_sym;
556	char *key;
557	gen = st_init_gen(vl_currentModule->combVar_st);
558	while (st_gen(gen, &key, (char**)&id_sym)) {
559	st_insert(comb_st, key, (char*)id_sym);
560
561	}
562	st_free_gen(gen);
563	}
564	st_free_table(tmp_st);
565	}
566
567	sensitiveList = old_sensitiveList;
568	}
569	(void) lsFinish(fg_gen);
570	}
571
572	vl_currentModule->combVar_st = comb_st;
573	vl_currentModule_combVar_st = NIL(st_table);
574	final_vars = conflict_arbitrator(file, vars_array);
575	non_block_assignment(file, final_vars);
576	instantiate_latch(file, final_vars);
577	quasi_cont_assignment(file);
578	cur_vars_array = NIL(array_t);
579	}
580
581
582	char vl_write_prim_table_header(FILE file, vl_primitive *prim)
583	{
584	lsGen port_gen;
585	vl_port *port;
586	lsHandle port_handle, port_id_handle;
587	vl_id_range port_id, port_id_sym;
588	int ith_port=0;
589	char *retval;
590
591	fprintf(file, ".names ");
592
593	retval = (char*)chk_malloc(lsLength(prim->ports)+1);
594
595	port_gen = lsStart(prim->ports);
596	while (lsNext(port_gen, (lsGeneric*)&port, &port_handle) != LS_NOMORE) {
597	lsFirstItem(port->port_exp, (lsGeneric*)&port_id, &port_id_handle);
598	if (!st_lookup(prim->sig_st, port_id->name, (char**)&port_id_sym)) {
599	char buf[MAXSTRLEN];
600	yylineno = -1;
601	sprintf(buf, "port %s is not defined in primitive %s",
602	port_id->name, vl_currentModule->name->name);
603	compile_error(buf);
604	}
605
606	retval[ith_port] = 0;
607	if (prim->type ==SeqPrimDecl) {
608	if (port_id_sym->flags & InPort) {
609	if (need_edge_detector(prim->entries, ith_port)) {
610	port_id_sym->flags \|= EdgeDetector;
611	fprintf(file, "%s%s %s ",
612	port_id_sym->name, PIN_DELAYED, port_id_sym->name);
613	retval[ith_port] = 1;
614	} else {
615	fprintf(file, "%s ", port_id_sym->name);
616	}
617	ith_port++;
618	}
619	} else {
620	if (port_id_sym->flags & InPort) {
621	fprintf(file, "%s ", port_id_sym->name);
622	ith_port++;
623	}
624	}
625	}
626	lsFinish(port_gen);
627
628	port_gen = lsStart(prim->ports);
629	while (lsNext(port_gen, (lsGeneric*)&port, &port_handle) != LS_NOMORE) {
630	lsFirstItem(port->port_exp, (lsGeneric*)&port_id, &port_id_handle);
631	st_lookup(prim->sig_st, port_id->name, (char**)&port_id_sym);
632
633	if (port_id_sym->flags & OutPort) {
634	if (prim->type == SeqPrimDecl)
635	fprintf(file, "%s %s%s\n", port_id_sym->name,
636	port_id_sym->name, SEP_LATCH);
637	else
638	fprintf(file, "%s\n", port_id_sym->name);
639	}
640	}
641	lsFinish(port_gen);
642
643	return retval;
644	}
645
646
647	static void vl_write_prim_table(FILE file, vl_primitive prim, char *edge_detectors)
648	{
649	vl_prim_entry *e;
650	int i, bin, c, num_combination, ith_dup;
651	lsHandle handle;
652	lsGen gen;
653
654	if (prim->entries == NULL) return;
655
656	WrtTRACE("Writing primitive table\n");
657	for(gen = lsStart(prim->entries);
658	lsNext(gen, (lsGeneric*)&e, &handle) != LS_NOMORE; ) {
659	for (i=0, num_combination=1; i<10; i++) {
660	if (e->inputs[i] == PrimNone)
661	break;
662	else {
663	if (!(IS_TRANSITION(e->inputs[i]) \|\| !edge_detectors[i]))
664	if (!strcmp(vl_translate_prim_symbol(e->inputs[i]),"-"))
665	num_combination <<= 1;
666	}
667	}
668
669	for (c=0; c<num_combination; c++) {
670	bin=0;
671	dump_entry:
672	ith_dup=0;
673	for (i=0; i<10; i++) {
674	if (e->inputs[i] == PrimNone)
675	break;
676	else {
677	if (IS_TRANSITION(e->inputs[i]) \|\| !edge_detectors[i])
678	fprintf(file,"%s ",
679	vl_translate_prim_symbol(e->inputs[i]));
680	else if (!strcmp(vl_translate_prim_symbol(e->inputs[i]),
681	"-")) {
682	fprintf(file, "%d %d ", (c>>ith_dup)&1,(c>>ith_dup)&1);
683	ith_dup++;
684	} else
685	fprintf(file,"%s %s ",
686	vl_translate_prim_symbol(e->inputs[i]),
687	vl_translate_prim_symbol(e->inputs[i]));
688	}
689	}
690
691	if (prim->type == SeqPrimDecl && e->next_state == PrimM) {
692	if (!strcmp(vl_translate_prim_symbol(e->next_state), "-")) {
693	fprintf(file, "%d %d\n", bin, bin);
694	if (bin++ < 1) goto dump_entry;
695	} else {
696	fprintf(file, "%s %s\n",
697	vl_translate_prim_symbol(e->state),
698	vl_translate_prim_symbol(e->state));
699	}
700	continue;
701	}
702
703	if (prim->type == SeqPrimDecl)
704	fprintf(file, "%s ", vl_translate_prim_symbol(e->state));
705
706	fprintf(file, "%s ", vl_translate_prim_symbol(e->next_state));
707	fprintf(file, "%s\n", vl_translate_prim_symbol(e->state));
708	}
709	}
710	(void) lsFinish(gen);
711	}
712
713
714	st_table vl_write_mod_item(FILE file, vl_decl item, st_table other_vars)
715	{
716	st_table *var_touched=NIL(st_table);
717	vl_term *ctrl_term;
718
719	switch(item->type) {
720
721	case RealDecl: case EventDecl:
722	break;
723
724	case IntDecl: case TimeDecl:
725	break;
726
727	case InputDecl: case OutputDecl:
728	case InoutDecl: case RegDecl:
729	break;
730
731	case ParamDecl: case DefparamDecl:
732	break;
733
734
735	case WireDecl:
736	var_touched = st_init_table(strcmp, st_strhash);
737	vl_write_wiring_assign(file, (vl_netdecl*)item, var_touched);
738	break;
739
740
741	case TriDecl:
742	case Tri0Decl: case Tri1Decl:
743	case Supply0Decl: case Supply1Decl:
744	case WandDecl: case TriandDecl:
745	case WorDecl: case TriorDecl:
746	case TriregDecl:
747	break;
748
749	case ContAssign:
750	var_touched = st_init_table(strcmp, st_strhash);
751	vl_write_cont_assign(file, (vl_cont_assign*)item, var_touched);
752	break;
753
754	case TaskDecl:
755	break;
756
757	case IntFuncDecl: {
758	char buf[MAXSTRLEN];
759	sprintf(buf, "'%s': can handle int function %s yet",
760	vl_currentModule->name->name,
761	((vl_function*)item)->name->name);
762	Translate_Warning(buf);
763	break;
764	}
765	case RealFuncDecl: {
766	char buf[MAXSTRLEN];
767	sprintf(buf, "'%s': can handle real function %s yet",
768	vl_currentModule->name->name,
769	((vl_function*)item)->name->name);
770	Translate_Warning(buf);
771	break;
772	}
773
774	case RangeFuncDecl:
775	break;
776
777	case AndGate: case NandGate:
778	case OrGate: case NorGate:
779	case XorGate: case XnorGate:
780	case BufGate: case Bufif0Gate:
781	case Bufif1Gate: case NotGate:
782	case Notif0Gate: case Notif1Gate:
783	case PulldownGate: case PullupGate:
784	case NmosGate: case RnmosGate:
785	case PmosGate: case RpmosGate:
786	case CmosGate: case RcmosGate:
787	case TranGate: case RtranGate:
788	case Tranif0Gate: case Rtranif0Gate:
789	case Tranif1Gate: case Rtranif1Gate:
790	vl_write_gate_inst_list(file, (vl_gate_inst_list*)item);
791	break;
792
793	case TeslaTimerGate:
794	vl_write_tesla_timer_inst_list(file, (vl_gate_inst_list*)item);
795	break;
796
797	case ModInst: {
798	char *mp;
799
800	if (st_lookup(vl_description->mp_st,
801	((vl_mod_prim_inst_list *)item)->name->name,
802	&mp)) {
803	if (((typestructPtr)mp)->type == CombPrimDecl \|\|
804	((typestructPtr)mp)->type == SeqPrimDecl)
805	goto write_prim_inst;
806	}
807	}
808
809	vl_write_mod_inst_list(file, (vl_mod_prim_inst_list*)item);
810	break;
811
812	write_prim_inst:
813
814	case PrimInst:
815	vl_write_prim_inst_list(file, (vl_mod_prim_inst_list*)item);
816	break;
817
818	case InitialStmt:
819	vl_write_reset(file, (vl_procstmt*)item);
820	break;
821	case AlwaysStmt:
822	if (((fg_graph_info*)vl_writeFlowGraph->user_data)->fg_id == -1) {
823	fg_new_fg_id();
824	((fg_graph_info*)vl_writeFlowGraph->user_data)->fg_id = fg_fg_id();
825	} else {
826	fg_set_fg_id(((fg_graph_info*)vl_writeFlowGraph->user_data)
827	->fg_id);
828	}
829	var_touched = st_init_table(strcmp, st_strhash);
830	if (vlTimedSystem) {
831	vl_current_init_vars = st_init_table(strcmp, st_strhash);
832	vl_predefine_vars(file, var_touched);
833	}
834	var_touched = vl_write_procstmt(file, (vl_procstmt*)item, var_touched);
835	if (vlTimedSystem) {
836
837	ctrl_term = test_against_lc_init(file);
838	if (final_vars && vlTimedSystem)
839	vl_timed_init_mux(file, ctrl_term, NIL(st_table),
840	vl_current_init_vars, final_vars);
841	else
842	vl_timed_init_mux(file, ctrl_term, NIL(st_table),
843	vl_current_init_vars, var_touched);
844	final_vars = NIL(st_table);
845	st_free_table(vl_current_init_vars);
846	vl_current_init_vars = NIL(st_table);
847	}
848	fg_associate_id_vars(fg_fg_id(), var_touched);
849	break;
850
851	default:
852	internal_error("Unexpected Module Item");
853	break;
854	}
855
856
857	other_vars = other_vars;
858
859	return var_touched;
860	}
861
862	void vl_write_mod_inst_list(FILE file, vl_mod_prim_inst_list modinstlist)
863
864	{
865	vl_module *mod;
866	vl_mod_prim_inst *modinst;
867
868	if (st_lookup(mod_list->mp_st,
869	modinstlist->name->name, (char**)&mod)) {
870	lsGen gen;
871	lsHandle handle;
872
873	gen = lsStart(modinstlist->mps);
874	if (lsNext(gen, (lsGeneric*)&modinst, &handle) == LS_OK) {
875	vl_write_mod_inst(file, mod, modinst);
876	while (lsNext(gen, (lsGeneric*)&modinst, &handle) != LS_NOMORE) {
877	vl_write_mod_inst(file, mod, modinst);
878	}
879	}
880	lsFinish(gen);
881	} else {
882	char msg[MAXSTRLEN];
883
884	sprintf(msg,
885	"module %s used without definition", modinstlist->name->name);
886	Translate_Warning(msg);
887	}
888	}
889
890
891	static void vl_write_prim_inst_list(FILE file, vl_mod_prim_inst_list priminstlist)
892	{
893	vl_primitive *prim;
894	vl_mod_prim_inst *priminst;
895
896	if (st_lookup(mod_list->mp_st,
897	priminstlist->name->name, (char**)&prim)) {
898	lsGen gen;
899	lsHandle handle;
900
901	gen = lsStart(priminstlist->mps);
902	if (lsNext(gen, (lsGeneric*)&priminst, &handle) == LS_OK) {
903	vl_write_prim_inst(file, prim, priminst);
904	while (lsNext(gen, (lsGeneric*)&priminst, &handle) != LS_NOMORE) {
905	vl_write_prim_inst(file, prim, priminst);
906	}
907	}
908	lsFinish(gen);
909	} else {
910	char msg[MAXSTRLEN];
911
912	sprintf(msg, "primitive %s is used without definition",
913	priminstlist->name->name);
914	Translate_Warning(msg);
915	}
916	}
917
918
919	static void vl_write_gate_inst_list(FILE file, vl_gate_inst_list gate_list)
920	{
921	vl_gate_inst *gate;
922	lsGen gen;
923	lsHandle handle;
924
925	gen = lsStart(gate_list->gates);
926	if (lsNext(gen, (lsGeneric*)&gate, &handle) == LS_OK) {
927	vl_write_gate_inst(file, gate_list->type, gate);
928	while(lsNext(gen, (lsGeneric*)&gate, &handle) != LS_NOMORE) {
929	vl_write_gate_inst(file, gate_list->type, gate);
930	}
931	}
932	(void) lsFinish(gen);
933	}
934
935
936	static void vl_write_tesla_timer_inst_list(FILE *file,
937	vl_gate_inst_list *gate_list)
938	{
939	vl_gate_inst *gate;
940	lsGen gen;
941	lsHandle handle;
942	int lb=0, ub=0;
943
944	if (!gate_list->delays) {
945	char buf[MAXSTRLEN];
946	sprintf(buf, "%s:teslaTimer needs #(LB:UB) delay specified",
947	vl_currentModule->name->name);
948	Translate_Warning(buf);
949	}
950	if (gate_list->delays->delay1->type == IntExpr) {
951	char buf[MAXSTRLEN];
952	sprintf(buf, "%s:teslaTimer needs #(LB:UB) delay specified",
953	vl_currentModule->name->name);
954	Translate_Warning(buf);
955	}
956
957	lb = vl_eval_expr(gate_list->delays->delay1->u.exprs.e1);
958	ub = vl_eval_expr(gate_list->delays->delay1->u.exprs.e2);
959	for (gen=lsStart(gate_list->gates);
960	lsNext(gen, (lsGeneric*)&gate, &handle)!=LS_NOMORE; ) {
961	vl_write_tesla_timer_inst(file, gate, lb, ub);
962	}
963	(void) lsFinish(gen);
964	}
965
966
967	void vl_write_mod_inst(FILE file, vl_module master, vl_mod_prim_inst *inst)
968	{
969	int lo, hi;
970	int constConnection;
971	lsHandle inst_handle, mast_handle;
972	lsGen inst_gen, mast_gen;
973	vl_port_connect *inst_item;
974	vl_port *mast_item;
975	vl_expr *old_item_expr;
976	lsList input_consts;
977	const_term *ct;
978	vl_enumerator *enum_elt;
979	int ith_port;
980	st_generator *stgen;
981	char *key;
982	int dummy;
983	lsList back_patch_list;
984	lsGen backgen;
985	lsHandle backhandle;
986	vl_expr *backexpr;
987	char modbuf[MAXSTRLEN*8];
988	char workbuf[MAXSTRLEN];
989
990	if (inst->name)
991	sprintf(modbuf, ".subckt %s %s ",
992	master->name->name, inst->name->name);
993	else
994	sprintf(modbuf, ".subckt %s %s ",
995	master->name->name, new_termname());
996
997	if (master->flags & WithInitial) {
998	if (use_rst_ckt) {
999	sprintf(workbuf, "%s=%s ",
1000	Initial_Signal->name->name, Initial_Signal->name->name);
1001	strcat(modbuf, workbuf);
1002	}
1003	}
1004
1005	if (inst->ports && master->ports) {
1006	lsHandle handle;
1007	lsGen gen;
1008	vl_id_range id, cur_sig;
1009	int named_connection;
1010
1011
1012
1013	input_consts = lsCreate();
1014	back_patch_list = lsCreate();
1015	auxSigST = st_init_table(strcmp, st_strhash);
1016
1017
1018	ith_port=0;
1019	named_connection = 0;
1020	inst_gen = lsStart(inst->ports);
1021	mast_gen = lsStart(master->ports);
1022	while (lsNext(mast_gen,
1023	(lsGeneric*)&mast_item, &mast_handle) != LS_NOMORE) {
1024	if (lsNext(inst_gen,
1025	(lsGeneric*)&inst_item, &inst_handle) != LS_NOMORE) {
1026
1027	if (!mast_item->port_exp && !inst_item->expr) continue;
1028	else if ((!mast_item->port_exp && inst_item->expr) \|\|
1029	(!inst_item->expr && mast_item->port_exp)) {
1030	char buf[MAXSTRLEN];
1031	sprintf(buf, "'%s': try to instantiate module %s with incompatible arguments",
1032	vl_currentModule->name->name, master->name->name);
1033	yylineno = -1;
1034	compile_error(buf);
1035	}
1036	} else if (!named_connection)
1037
1038	break;
1039
1040
1041	lsFirstItem(mast_item->port_exp, (lsGeneric*)&id, &handle);
1042
1043	if (!st_lookup(master->sig_st, id->name, (char**)&id)) {
1044	char buf[MAXSTRLEN];
1045
1046	sprintf(buf, "port '%s' is not defined in module '%s'",
1047	id->name, master->name->name);
1048	semantic_error(buf);
1049	}
1050
1051	old_item_expr = NIL(vl_expr);
1052
1053	if (!named_connection)
1054	named_connection = (inst_item->type == NamedConnect);
1055	if (named_connection) {
1056
1057	mast_item = search_match_port(inst_item->id->name,
1058	master->ports);
1059
1060	lsFirstItem(mast_item->port_exp, (lsGeneric*)&id, &handle);
1061	if (!st_lookup(master->sig_st, id->name, (char**)&id)) {
1062	char buf[MAXSTRLEN];
1063
1064	sprintf(buf, "port '%s' is not defined in module '%s'",
1065	id->name, master->name->name);
1066	semantic_error(buf);
1067	}
1068	}
1069
1070
1071	if ((id->flags&OutPort) && Zconnection) {
1072	lsList assign_list;
1073	vl_id_range *tmp_id;
1074	vl_lval *tmp_lhs;
1075	vl_expr *tmp_rhs;
1076	vl_cont_assign *assign_stmt;
1077	tmp_id = vl_create_id_range(vlStrdup(new_termname()),
1078	NIL(vl_range));
1079	if (inst_item->expr->type == ConcatExpr)
1080	tmp_lhs = vl_create_lval(ConcatExpr,
1081	NIL(vl_id_range),NIL(vl_range),
1082	(lsList)inst_item->expr->u.name);
1083	else
1084	tmp_lhs = vl_create_lval(inst_item->expr->type,
1085	inst_item->expr->u.idrng,
1086	inst_item->expr->u.idrng->range,
1087	(lsList)0);
1088	tmp_rhs = vl_create_expr(IDExpr, 0, (double)0.0,
1089	tmp_id, NIL(void), NIL(void));
1090	assign_list = lsCreate();
1091	lsNewEnd(assign_list,
1092	(lsGeneric)vl_create_bassign_stmt(AssignStmt,
1093	tmp_lhs,
1094	NIL(void),
1095	tmp_rhs),
1096	0);
1097	assign_stmt = vl_create_cont_assign_stmt(0, NIL(vl_delay),
1098	assign_list);
1099	if (inst_item->expr->type == IDExpr \|\|
1100	inst_item->expr->type == BitSelExpr \|\|
1101	inst_item->expr->type == PartSelExpr) {
1102	int inVar=0;
1103	if (st_lookup(vl_currentModule->sig_st,
1104	inst_item->expr->u.name->name,
1105	(char**)&cur_sig))
1106	inVar = ((cur_sig->flags & InPort) &&
1107	!(cur_sig->flags & OutPort));
1108	if (!inVar)
1109	lsInAfter(curModGen,
1110	(lsGeneric)assign_stmt, PcurModHandle);
1111	}
1112	chkUndefPorts(inst_item->expr, auxSigST);
1113	old_item_expr = inst_item->expr;
1114	inst_item->expr = vl_create_expr(IDExpr, 0, (double)0.0,
1115	tmp_id, NIL(void), NIL(void));
1116	}
1117
1118
1119	if ((id->flags&OutPort) && (inst_item->expr->type==ConcatExpr)) {
1120	int m_lo, m_hi;
1121	get_hilo(id, &m_hi, &m_lo);
1122	write_out_port(file, id, m_hi,m_lo, inst_item->expr, auxSigST);
1123	write_var_decl(file, inst_item->expr->term);
1124	lsNewEnd(back_patch_list, (lsGeneric)inst_item->expr, 0);
1125	} else {
1126	masterIdDfn = id;
1127	if (old_item_expr)
1128	if (old_item_expr->type == ConcatExpr)
1129	vl_write_expr(file, old_item_expr, NIL(st_table));
1130	vl_write_expr(file, inst_item->expr, NIL(st_table));
1131	masterIdDfn = NIL(vl_id_range);
1132	}
1133
1134	constConnection = 0;
1135	if (!inst_item->expr) {
1136	constConnection = 1;
1137	} else if (!inst_item->expr->term) {
1138	constConnection = 1;
1139	} else {
1140	if (id->id_type) {
1141	if (inst_item->expr->type == IDExpr &&
1142	st_lookup(id->id_type->specifier->
1143	u.enum_type->domain_st,
1144	inst_item->expr->u.name->name,
1145	(char**)&enum_elt))
1146	constConnection = 1;
1147	}
1148	}
1149
1150	if (constConnection) {
1151
1152	int hi, lo;
1153	vl_term *term_out;
1154	char conn[MAXSTRLEN];
1155
1156
1157	get_hilo(id, &hi, &lo);
1158	term_out = typed_new_term(id->id_type,NIL(vl_range),lo,hi);
1159	term_out->flag \|= id->flags;
1160	lsNewEnd(input_consts,
1161	(lsGeneric)create_const_term(inst_item->expr,term_out),0);
1162
1163	put_const_port_connect(NIL(FILE), conn,
1164	id, inst_item, input_consts, term_out);
1165	strcat(modbuf, conn);
1166	continue;
1167	}
1168
1169	if (inst_item->expr->type == IDExpr \|\|
1170	inst_item->expr->type == BitSelExpr \|\|
1171	inst_item->expr->type == PartSelExpr) {
1172	int retval = st_lookup(vl_currentModule->sig_st,
1173	inst_item->expr->u.name->name,
1174	(char**)&cur_sig);
1175	assert(retval);
1176	}
1177
1178
1179	if (implicitClocking && !vlTimedSystem && !implicitClockWire) {
1180	if (master->clk)
1181	if (!strcmp(master->clk->expr->u.name->name, id->name))
1182	continue;
1183	if (!strcmp(id->name,CLOCK))
1184	continue;
1185	}
1186
1187	{
1188	char conn[MAXSTRLEN];
1189
1190	if (id->flags & MVar) {
1191
1192	put_mvar_port_connect(NIL(FILE), conn, id, inst_item);
1193	} else {
1194	get_hilo(id, &hi, &lo);
1195	if (lo > hi) {
1196
1197	put_bin_scalar_port_connect(NIL(FILE), conn,
1198	id, inst_item);
1199	} else {
1200
1201	put_bin_vector_port_connect(NIL(FILE), conn,
1202	id, inst_item);
1203	}
1204	}
1205
1206	strcat(modbuf, conn);
1207	strcat(modbuf, " ");
1208	}
1209
1210	ith_port++;
1211	}
1212	lsFinish(inst_gen);
1213	lsFinish(mast_gen);
1214
1215	backgen = lsStart(back_patch_list);
1216	while (lsNext(backgen,(lsGeneric*)&backexpr,&backhandle)!=LS_NOMORE) {
1217	vl_write_outport_connect(file, backexpr);
1218	}
1219	lsFinish(backgen);
1220
1221	gen = lsStart(input_consts);
1222	while(lsNext(gen, (lsGeneric*)&ct, &handle) != LS_NOMORE) {
1223	if (!isOutPort(ct->term->flag))
1224	write_var_decl(file, ct->term);
1225	vl_write_const(file, ct->const_expr, ct->term);
1226	}
1227	lsFinish(gen);
1228
1229	stgen = st_init_gen(auxSigST);
1230	while (st_gen(stgen, &key, (char**)&dummy)) {
1231	if (!dummy)
1232	fprintf(file, "%s %s %s %s;\n",
1233	SMV_VAR, key, SMV_COLON, SMV_BOOLEAN);
1234	else {
1235	int mhi, mlo;
1236	get_hilo((vl_id_range*)dummy, &mhi, &mlo);
1237	if (mhi < mlo)
1238	fprintf(file, "%s %s %s %s;\n",
1239	SMV_VAR, key, SMV_COLON, SMV_BOOLEAN);
1240	else
1241	fprintf(file, "%s %s %s %s %d%s%d %s %s;\n", SMV_VAR,
1242	key, SMV_COLON, SMV_ARRAY, mhi, SMV_RANGE, mlo,
1243	SMV_OF, SMV_BOOLEAN);
1244	}
1245	}
1246	st_free_gen(stgen);
1247	auxSigST = NIL(st_table);
1248
1249	fprintf(file, "%s\n", modbuf);
1250
1251	lsDestroy(input_consts, 0);
1252	}
1253	}
1254
1255
1256	static void vl_write_prim_inst(FILE file, vl_primitive master,
1257	vl_mod_prim_inst *inst)
1258	{
1259	vl_write_mod_inst(file, (vl_module*)master, inst);
1260	}
1261
1262
1263	static void vl_write_gate_inst(FILE file, short type, vl_gate_inst gate)
1264	{
1265	lsGen inst_gen;
1266	lsHandle inst_handle;
1267	vl_expr *inst_expr;
1268	vl_term *conn_term;
1269	vl_expr *old_item_expr = NIL(vl_expr);
1270	int constConnection;
1271	int ith_port;
1272	char buf[MAXSTRLEN];
1273	char outbuf[MAXSTRLEN];
1274	char *cp;
1275
1276	cp = outbuf;
1277	*cp = '\0';
1278	cp = strappendS(cp, ".subckt");
1279	cp = strappend(cp, "__sis_");
1280	cp = strappend(cp, GATE_NAME(type));
1281
1282	if (lsLength(gate->terms)>3) sprintf(buf,"%d",lsLength(gate->terms)-1);
1283	else buf[0]='\0';
1284	cp = strappendS(cp, buf);
1285	if (gate->name)
1286	cp = strappendS(cp, gate->name->name);
1287	else
1288	cp = strappendS(cp, new_termname());
1289
1290	inst_gen = lsStart(gate->terms);
1291	ith_port = 1;
1292	while (lsNext(inst_gen,
1293	(lsGeneric*)&inst_expr, &inst_handle) != LS_NOMORE) {
1294
1295	if ((ith_port==1 \|\| type == TranGate) && Zconnection) {
1296	lsList assign_list;
1297	vl_id_range *tmp_id;
1298	vl_term *tmp_term;
1299	vl_lval *tmp_lhs;
1300	vl_expr *tmp_rhs;
1301	vl_cont_assign *assign_stmt;
1302	char *dummy;
1303	int no_resolve;
1304
1305	no_resolve = 0;
1306	tmp_id = vl_create_id_range(vlStrdup(new_termname()),
1307	NIL(vl_range));
1308	tmp_term = vl_create_term(tmp_id, 0, -1);
1309	write_var_decl(file, tmp_term);
1310	if (inst_expr->type == ConcatExpr)
1311	tmp_lhs = vl_create_lval(ConcatExpr,
1312	NIL(vl_id_range),NIL(vl_range),
1313	(lsList)inst_expr->u.name);
1314	else {
1315
1316
1317	if (implicitDeclare && inst_expr->type == IDExpr) {
1318	if (!st_lookup(vl_currentModule->sig_st,
1319	inst_expr->u.idrng->name, &dummy)) {
1320	st_insert(vl_currentModule->sig_st,
1321	inst_expr->u.idrng->name,
1322	(char*)vl_create_id_range(inst_expr->u.idrng->name, NIL(vl_range)));
1323	} else {
1324	no_resolve = !((((vl_id_range*)dummy)->flags & InPort) &&
1325	(((vl_id_range*)dummy)->flags & OutPort)) &&
1326	type == TranGate;
1327	}
1328	}
1329	tmp_lhs = vl_create_lval(inst_expr->type,
1330	inst_expr->u.idrng,
1331	inst_expr->u.idrng->range,
1332	(lsList)0);
1333	}
1334
1335	if (!no_resolve) {
1336	tmp_rhs = vl_create_expr(IDExpr, 0, (double)0.0,
1337	tmp_id, NIL(void), NIL(void));
1338	assign_list = lsCreate();
1339	lsNewEnd(assign_list,
1340	(lsGeneric)vl_create_bassign_stmt(AssignStmt,
1341	tmp_lhs,
1342	NIL(void),
1343	tmp_rhs),
1344	0);
1345	assign_stmt = vl_create_cont_assign_stmt(0, NIL(vl_delay),
1346	assign_list);
1347	lsInAfter(curModGen, (lsGeneric)assign_stmt, PcurModHandle);
1348	}
1349
1350	old_item_expr = inst_expr;
1351	inst_expr = vl_create_expr(IDExpr, 0, (double)0.0,
1352	tmp_id, NIL(void), NIL(void));
1353	}
1354
1355	vl_write_expr(file, inst_expr, NIL(st_table));
1356
1357	constConnection = 0;
1358	if (!inst_expr) {
1359	constConnection = 1;
1360	} else if (!inst_expr->term) {
1361	constConnection = 1;
1362	}
1363
1364	if (constConnection) {
1365	conn_term = new_term(NIL(vl_range),0,-1);
1366	vl_write_const(file, inst_expr, conn_term);
1367	} else {
1368	conn_term = inst_expr->term;
1369	}
1370
1371
1372	if (inst_expr->term->lo > inst_expr->term->hi) {
1373	sprintf(buf, "%c=%s", (ith_port==1)?'o':'a'+ith_port-2,
1374	conn_term->name->name);
1375	} else {
1376	sprintf(buf, "%c=%s%s%d%s", (ith_port==1)?'o':'a'+ith_port-2,
1377	conn_term->name->name,
1378	SEP_LBITSELECT, inst_expr->term->lo, SEP_RBITSELECT);
1379	}
1380
1381	cp = strappendS(cp, buf);
1382	ith_port++;
1383	}
1384	lsFinish(inst_gen);
1385
1386	fprintf(file, "%s\n", outbuf);
1387	}
1388
1389
1390	static void vl_write_tesla_timer_inst(FILE file, vl_gate_inst gate,
1391	int lb, int ub)
1392	{
1393	static int teslaTimerCounter = 0;
1394	char ps[MAXSTRLEN], ns[MAXSTRLEN];
1395	char timer[MAXSTRLEN];
1396	vl_term *(w[5]);
1397	int constConnection;
1398	int i;
1399	lsGen inst_gen;
1400	lsHandle inst_handle;
1401	vl_expr *inst_expr;
1402
1403	if (lsLength(gate->terms) != 5) {
1404	char buf[MAXSTRLEN];
1405	sprintf(buf, "%s:teslaTimer needs exactly 3 inputs + 2 outputs\n",
1406	vl_currentModule->name->name);
1407	Translate_Warning(buf);
1408	}
1409
1410	for (inst_gen=lsStart(gate->terms), i=0;
1411	lsNext(inst_gen, (lsGeneric*)&inst_expr, &inst_handle) != LS_NOMORE;
1412	i++) {
1413	vl_write_expr(file, inst_expr, NIL(st_table));
1414
1415	constConnection = 0;
1416	if (!inst_expr) {
1417	constConnection = 1;
1418	} else if (!inst_expr->term) {
1419	constConnection = 1;
1420	}
1421
1422	if (constConnection) {
1423	w[i] = new_term(NIL(vl_range),0,-1);
1424	vl_write_const(file, inst_expr, w[i]);
1425	} else
1426	w[i] = inst_expr->term;
1427	}
1428	lsFinish(inst_gen);
1429
1430	sprintf(ps, "%s", new_termname());
1431	sprintf(ns, "%s", new_termname());
1432	sprintf(timer, "TESLATM%d", teslaTimerCounter++);
1433	fprintf(file, ".mv %s, %s 4 s w t1 t2\n", ps, ns);
1434	fprintf(file, ".latch %s %s\n.r %s\ns\n", ns, ps, ps);
1435	fprintf(file, ".timers %s\n", timer);
1436	fprintf(file, ".names %s %s %s %s %s %s %s %s\n",
1437	ps, w[0]->name->name, w[1]->name->name, w[4]->name->name,
1438	HSIS_ARROW,
1439	w[2]->name->name, w[3]->name->name, ns);
1440	fprintf(file, "s 0 - - 0 0 s\n");
1441	fprintf(file, "s - 1 - 0 0 s\n");
1442	if (lb==0)
1443	fprintf(file, "s 1 0 1 1 0 s\n");
1444	else
1445	fprintf(file, "s 1 0 1 0 1 t1\n");
1446	fprintf(file, "s 1 0 0 0 0 w && %s=0\n", timer);
1447	fprintf(file, "w - 1 - 0 0 s\n");
1448	fprintf(file, "w - 0 0 0 0 w && %s<=%d\n", timer, ub);
1449	fprintf(file, "w - 0 1 1 0 s && %s>=%d && %s<=%d\n", timer, lb, timer, ub);
1450	fprintf(file, "w - 0 1 0 1 t1 && %s<%d\n", timer, lb);
1451	fprintf(file, "w - 0 - 0 1 t2 && %s>%d\n", timer, ub);
1452	fprintf(file, "t1 - 0 - 0 1 t1\n");
1453	fprintf(file, "t1 - 1 - 0 1 s\n");
1454	fprintf(file, "t2 - 0 - 0 1 t2\n");
1455	fprintf(file, "t2 - 1 - 0 1 s\n");
1456	}
1457
1458
1459
1460	void vl_write_reset(FILE file, vl_procstmt init_stmt)
1461	{
1462	st_table *reset_vars=NIL(st_table);
1463	st_generator *gen;
1464	char *key;
1465	var_info *id_var;
1466	vl_id_range *id_sym;
1467
1468	reset_vars = st_init_table(strcmp, st_strhash);
1469	rst_ckt = 1;
1470	vl_write_reset_stmt(file, init_stmt->stmt, reset_vars);
1471	non_block_assignment(file, reset_vars);
1472	gen = st_init_gen(reset_vars);
1473	while (st_gen(gen, &key, (char**)&id_var)) {
1474	if (st_lookup(vl_currentModule->sig_st, key, (char**)&id_sym)) {
1475	lsNewEnd(id_sym->initial, (lsGeneric)id_var->current_terminal, 0);
1476	if (strstr(id_sym->name, SEP_LATCH)) {
1477	char buf[MAXSTRLEN];
1478	strcpy(buf, id_sym->name);
1479	strip_char(buf, SEP_LATCH);
1480	if (st_lookup(vl_currentModule->sig_st, buf, (char**)&id_sym))
1481	lsNewEnd(id_sym->initial,
1482	(lsGeneric)id_var->current_terminal, 0);
1483	}
1484	}
1485	}
1486	st_free_gen(gen);
1487	rst_ckt = 0;
1488	}
1489
1490
1491	st_table vl_write_procstmt(FILE file, vl_procstmt procstmt, st_table vars)
1492	{
1493	int old_lhs_must_be_wire;
1494
1495	WrtTRACE("Writing always/initial statement");
1496
1497
1498
1499	vl_pauseStack = create_stack();
1500	vl_current_pause_list = lsCreate();
1501	vl_current_vars_list = lsCreate();
1502
1503	in_procedure = 1;
1504	if (procstmt->type == AlwaysStmt) {
1505	old_lhs_must_be_wire = lhs_must_be_wire;
1506	if (((vl_bassign_stmt*)procstmt->stmt)->type != EventControlStmt) {
1507	lhs_must_be_wire = 1;
1508
1509	}
1510
1511
1512	vars = vl_write_stmt(file, procstmt->stmt,NO_MUX,NIL(vl_term),vars);
1513
1514	if (vlTimedSystem) final_vars = vars;
1515	lhs_must_be_wire = old_lhs_must_be_wire;
1516
1517	if (procstmt->flags & PseudoAlways) {
1518
1519	vl_register_pause((vertex_t *) procstmt->fg_info, vars);
1520	}
1521
1522
1523	if (lsLength(vl_current_pause_list) > 1 && vlTimedSystem) {
1524	st_table *new_table;
1525	new_table = st_init_table(strcmp, st_strhash);
1526	vl_prioritize_sequence(file,
1527	vl_current_vars_list, vl_current_pause_list,
1528	new_table);
1529	vars = new_table;
1530	}
1531	}
1532	in_procedure = 0;
1533
1534	destroy_stack(vl_pauseStack, 0);
1535	vl_pauseStack = (lsList)0;
1536	lsDestroy(vl_current_pause_list, 0);
1537	lsDestroy(vl_current_vars_list, 0);
1538	vl_current_pause_list = (lsList)0;
1539	vl_current_vars_list = (lsList)0;
1540
1541	return vars;
1542	}
1543
1544
1545	st_table vl_write_stmt(FILE file, void stmt, int muxed, vl_term muxsel, st_table *vars)
1546	{
1547	vl_id_range *id_sym;
1548	vl_term *out_term;
1549	vl_term *new_out;
1550	vl_term *tmp_term;
1551	vl_term *sel;
1552	st_table *pre_cond=NIL(st_table);
1553	st_table *old_init_vars=NIL(st_table);
1554	int using_ith_ctrl;
1555	int fg_id;
1556	int cur_bit_pos;
1557	int num_lhs_vars;
1558	lsList lhs_list;
1559	lsGen lhs_gen=(lsGen)0;
1560	lsHandle lhs_handle;
1561	vl_expr *lhs_expr;
1562	vl_id_range *lhs_var;
1563	vl_range *lhs_range;
1564	int old_check_rhs_sen;
1565	int i;
1566
1567	if (stmt == NIL(void)) {
1568	return vars;
1569	}
1570
1571	WrtTRACE("Writing statement");
1572
1573	switch(((vl_bassign_stmt *)stmt)->type) {
1574	case BeginEndStmt:
1575	vars = vl_write_begin_end_stmt(file, stmt, muxed, muxsel, vars);
1576	break;
1577	case IfElseStmt:
1578	Being_Conditioned++;
1579	vars = vl_write_if_else_stmt(file, stmt, vars);
1580	Being_Conditioned--;
1581	break;
1582	case CaseStmt:
1583	case CasexStmt:
1584	case CasezStmt:
1585	Being_Conditioned++;
1586	vars = vl_write_case_stmt(file, stmt, vars);
1587	Being_Conditioned--;
1588	break;
1589	case CaseItem:
1590	break;
1591	case DefaultItem:
1592	break;
1593	case ForeverStmt:
1594	break;
1595	case RepeatStmt:
1596	break;
1597	case WhileStmt: {
1598	if (!rst_ckt) {
1599	st_table *fork_in_vars;
1600	vl_term *dom_sel;
1601
1602	using_ith_ctrl = rst_ith_ctrl;
1603	rst_ith_ctrl++;
1604	vl_write_expr(file, ((vl_while_stmt*)stmt)->cond, vars);
1605
1606
1607
1608	tmp_term = new_term(NIL(vl_range), 0, -1);
1609	if (!((vl_while_stmt*)stmt)->cond->term) {
1610	sel = new_term(NIL(vl_range), 0, -1);
1611	vl_write_const(file, ((vl_while_stmt*)stmt)->cond, sel);
1612	((vl_while_stmt*)stmt)->cond->term = sel;
1613	} else if (((vl_while_stmt*)stmt)->cond->term->lo <=
1614	((vl_while_stmt*)stmt)->cond->term->hi) {
1615	sel = new_term(NIL(vl_range), 0, -1);
1616	vl_write_vector_bop(file, UorExpr,
1617	((vl_while_stmt*)stmt)->cond->term,
1618	NIL(vl_term), sel);
1619	} else {
1620	sel = ((vl_while_stmt*)stmt)->cond->term;
1621	}
1622
1623	assert ((((vl_while_stmt)stmt)->cond->fg_info1 && ((vl_while_stmt)stmt)->cond->fg_info2) \|\| (!((vl_while_stmt)stmt)->cond->fg_info1 && !((vl_while_stmt)stmt)->cond->fg_info2));
1624
1625
1626	if (((vl_while_stmt*)stmt)->cond->fg_info1) {
1627
1628	fg_loop_collect_pause(file,
1629	(vertex_t)((vl_while_stmt)stmt)->cond->fg_info1,
1630	(vertex_t)((vl_while_stmt)stmt)->cond->fg_info2,
1631	&dom_sel);
1632
1633	}
1634
1635
1636	if (((vl_while_stmt*)stmt)->cond->fg_info1)
1637	fg_update_node_info((vertex_t*)
1638	(((vl_while_stmt*)stmt)->cond->fg_info1),
1639	(char*)sel);
1640
1641	vl_write_bin_connect(file, sel, tmp_term, 0);
1642	lsNewEnd(rst_ctrl_list, (lsGeneric)tmp_term, 0);
1643	rst_ctrl_syndrome[using_ith_ctrl] = '1';
1644
1645	old_init_vars = vl_current_init_vars;
1646	vl_current_init_vars = st_init_table(strcmp, st_strhash);
1647	fork_in_vars = st_copy(vars);
1648	vl_predefine_vars(file, vars);
1649
1650	vars = vl_write_stmt(file,
1651	((vl_while_stmt*)stmt)->stmt,
1652	muxed,muxsel,vars);
1653
1654	rst_ctrl_syndrome[using_ith_ctrl] = '-';
1655	vl_timed_init_mux(file, dom_sel, vars,
1656	vl_current_init_vars, fork_in_vars);
1657	vl_current_init_vars = old_init_vars;
1658	}
1659	break;
1660	}
1661	case ForStmt: {
1662	if (!rst_ckt) {
1663	st_table *fork_in_vars;
1664	vl_term *dom_sel;
1665
1666	vl_write_stmt(file, ((vl_for_stmt*)stmt)->init,muxed,muxsel,vars);
1667
1668	old_init_vars = vl_current_init_vars;
1669	vl_current_init_vars = st_init_table(strcmp, st_strhash);
1670	fork_in_vars = st_copy(vars);
1671	vl_predefine_vars(file, vars);
1672
1673	using_ith_ctrl = rst_ith_ctrl;
1674	rst_ith_ctrl++;
1675	vl_write_expr(file, ((vl_for_stmt*)stmt)->cond, vars);
1676
1677	tmp_term = new_term(NIL(vl_range), 0, -1);
1678	if (!((vl_for_stmt*)stmt)->cond->term) {
1679	sel = new_term(NIL(vl_range), 0, -1);
1680	vl_write_const(file, ((vl_for_stmt*)stmt)->cond, sel);
1681	((vl_for_stmt*)stmt)->cond->term = sel;
1682	} else if (((vl_for_stmt*)stmt)->cond->term->lo <=
1683	((vl_for_stmt*)stmt)->cond->term->hi) {
1684	sel = new_term(NIL(vl_range), 0, -1);
1685	vl_write_vector_bop(file, UorExpr,
1686	((vl_for_stmt*)stmt)->cond->term,
1687	NIL(vl_term), sel);
1688	} else {
1689	sel = ((vl_for_stmt*)stmt)->cond->term;
1690	}
1691
1692	assert ((((vl_for_stmt)stmt)->cond->fg_info1 && ((vl_for_stmt)stmt)->cond->fg_info2) \|\| (!((vl_for_stmt)stmt)->cond->fg_info1 && !((vl_for_stmt)stmt)->cond->fg_info2));
1693
1694	if (((vl_for_stmt*)stmt)->cond->fg_info1) {
1695
1696	fg_loop_collect_pause(file,
1697	(vertex_t)((vl_for_stmt)stmt)->cond->fg_info1,
1698	(vertex_t)((vl_for_stmt)stmt)->cond->fg_info2,
1699	&dom_sel);
1700	}
1701
1702	if (((vl_for_stmt*)stmt)->cond->fg_info1)
1703	fg_update_node_info((vertex_t*)
1704	(((vl_for_stmt*)stmt)->cond->fg_info1),
1705	(char*)sel);
1706
1707	vl_write_bin_connect(file, sel, tmp_term, 0);
1708	lsNewEnd(rst_ctrl_list, (lsGeneric)tmp_term, 0);
1709	rst_ctrl_syndrome[using_ith_ctrl] = '1';
1710
1711	vars = vl_write_stmt(file,
1712	((vl_for_stmt*)stmt)->stmt,muxed,muxsel,vars);
1713
1714	vars = vl_write_stmt(file,
1715	((vl_for_stmt*)stmt)->end,muxed,muxsel,vars);
1716
1717	rst_ctrl_syndrome[using_ith_ctrl] = '-';
1718	vl_timed_init_mux(file, dom_sel, vars,
1719	vl_current_init_vars, fork_in_vars);
1720	vl_current_init_vars = old_init_vars;
1721	}
1722	break;
1723	}
1724
1725	case DelayControlStmt: {
1726
1727	vl_register_pause((vertex_t )((vl_delay_control_stmt)stmt)->fg_info,
1728	vars);
1729	vars = st_init_table(strcmp, st_strhash);
1730	vl_write_stmt(file, ((vl_delay_control_stmt*)stmt)->stmt,
1731	muxed, muxsel, vars);
1732	break;
1733	}
1734
1735	case EventControlStmt: {
1736
1737	vl_register_pause((vertex_t )((vl_event_control_stmt)stmt)->fg_info,
1738	vars);
1739	vars = st_init_table(strcmp, st_strhash);
1740	vars = vl_write_stmt(file, ((vl_event_control_stmt*)stmt)->stmt,
1741	muxed, muxsel, vars);
1742	break;
1743	}
1744
1745	case DelayBassignStmt:
1746	case DelayNbassignStmt: {
1747	char buf[MAXSTRLEN];
1748
1749	yylineno = ((vl_bassign_stmt*)stmt)->lineno;
1750
1751	sprintf(buf, "'%s' contains delay, do not know how to synthesize it",
1752	vl_currentModule->name->name);
1753	Translate_Warning(buf);
1754	break;
1755	}
1756
1757	case AssignStmt:
1758	case BassignStmt:
1759	case NbassignStmt:
1760	case EventBassignStmt:
1761	case EventNbassignStmt: {
1762
1763	yylineno = ((vl_bassign_stmt*)stmt)->lineno;
1764
1765
1766	if (((vl_bassign_stmt*)stmt)->lhs->type == ConcatExpr) {
1767
1768	num_lhs_vars = lsLength(((vl_bassign_stmt*)stmt)->lhs->concat);
1769	lhs_list = ((vl_bassign_stmt*)stmt)->lhs->concat;
1770	lhs_gen = lsStart(lhs_list);
1771	} else {
1772	num_lhs_vars = 1;
1773	lhs_list = (lsList)0;
1774	}
1775
1776
1777	for (i=0; i<num_lhs_vars; i++) {
1778	if (lhs_list) {
1779	int retval = lsNext(lhs_gen,(lsGeneric*)&lhs_expr,&lhs_handle);
1780	assert(retval != LS_NOMORE);
1781	lhs_var = lhs_expr->u.name;
1782	lhs_range = lhs_var->range;
1783	} else {
1784	lhs_var = ((vl_bassign_stmt*)stmt)->lhs->name;
1785	lhs_range = ((vl_bassign_stmt*)stmt)->lhs->range;
1786	}
1787
1788	if (!st_lookup(vl_currentModule->sig_st, lhs_var->name,
1789	(char**)&id_sym)) {
1790	char buf[MAXSTRLEN];
1791
1792	sprintf(buf, "variable %s not declared while used as lhs",
1793	lhs_var->name);
1794	compile_error(buf);
1795	id_sym = lhs_var;
1796	st_insert(vl_currentModule->sig_st,
1797	id_sym->name, (char*)id_sym);
1798	}
1799
1800	if (lhs_range)
1801	if (((vl_bassign_stmt *)stmt)->type == NbassignStmt \|\|
1802	((vl_bassign_stmt *)stmt)->type == EventNbassignStmt) {
1803	char buf[MAXSTRLEN];
1804	sprintf(buf,
1805	"'%s':non-blocking to partial vector, array element",
1806	id_sym->name);
1807	compile_error(buf);
1808	}
1809
1810	if (id_sym->flags & InPort) {
1811	char buf[MAXSTRLEN];
1812
1813	sprintf(buf, "trying to assign to input variable %s",
1814	id_sym->name);
1815	yylineno = ((vl_bassign_stmt*)stmt)->lineno;
1816	compile_error(buf);
1817	}
1818
1819	id_sym->edge_trigger = edge_triggering;
1820
1821	if (recordCombAlways && !edge_triggering) {
1822
1823	vl_id_range *temp_id_sym;
1824
1825	if (!st_lookup(vl_currentModule->combVar_st, id_sym->name,
1826	(char**)&temp_id_sym)) {
1827	st_insert(vl_currentModule->combVar_st, id_sym->name,
1828	(char*)id_sym);
1829	}
1830	} else {
1831	id_sym->sensitiveList = sensitiveList;
1832	}
1833	}
1834
1835	if (lhs_list) lsFinish(lhs_gen);
1836
1837	old_check_rhs_sen = check_rhs_sensitivity;
1838	check_rhs_sensitivity =
1839	!(((vl_bassign_stmt*)stmt)->type == AssignStmt && vars);
1840	out_term = vl_write_assign(file,(vl_bassign_stmt*)stmt,
1841	muxed,muxsel,vars);
1842	check_rhs_sensitivity = old_check_rhs_sen;
1843
1844	if (lhs_list) {
1845	lhs_gen = lsStart(((vl_bassign_stmt*)stmt)->lhs->concat);
1846	assert(array_n(assign_array) == num_lhs_vars);
1847	}
1848
1849	for (i=0, cur_bit_pos=0; i<num_lhs_vars; i++) {
1850	if (lhs_list) {
1851	int retval = lsNext(lhs_gen,(lsGeneric*)&lhs_expr,&lhs_handle);
1852	assert(retval != LS_NOMORE);
1853	lhs_var = lhs_expr->u.name;
1854	retval = st_lookup(vl_currentModule->sig_st,
1855	lhs_expr->u.name->name, (char**)&id_sym);
1856	assert(retval);
1857	}
1858
1859	if (((vl_bassign_stmt*)stmt)->type == NbassignStmt \|\|
1860	((vl_bassign_stmt*)stmt)->type == DelayNbassignStmt \|\|
1861	((vl_bassign_stmt*)stmt)->type == EventNbassignStmt) {
1862
1863	char buf[MAXSTRLEN];
1864	sprintf(buf, "%s%s", id_sym->name, SEP_LATCH);
1865	st_lookup(vl_currentModule->sig_st, buf, (char**)&id_sym);
1866	} else if (((vl_bassign_stmt*)stmt)->type == AssignStmt && vars) {
1867
1868	char buf[MAXSTRLEN];
1869	sprintf(buf, "%s%s", id_sym->name, SEP_QUASI);
1870	st_lookup(vl_currentModule->sig_st, buf, (char**)&id_sym);
1871	}
1872
1873	if (!out_term) break;
1874	if (lhs_list) out_term = array_fetch(vl_term*, assign_array, i);
1875	new_out = vl_copy_term(out_term);
1876	if (lhs_list) {
1877
1878	int hi, lo;
1879	get_hilo(id_sym, &hi, &lo);
1880	if (hi < lo) hi=lo=0;
1881	new_out->lo = cur_bit_pos;
1882	new_out->hi = new_out->lo + (hi-lo+1) -1;
1883	cur_bit_pos = new_out->hi + 1;
1884	}
1885
1886	pre_cond =
1887	fg_assign_temporal_context((vertex_t*)
1888	(((vl_bassign_stmt*)stmt)->fg_info));
1889	fg_id = fg_fg_id();
1890
1891
1892	if (cntxt_event)
1893	record_pseudo_cntxt(file, fg_id, pre_cond,
1894	ctrl_syndrome, rst_ctrl_syndrome, vars);
1895
1896	if (!rst_ckt) {
1897	syndrome_expr *newCtrlExpr;
1898
1899	if (((vl_bassign_stmt *)stmt)->type == NbassignStmt \|\|
1900	((vl_bassign_stmt *)stmt)->type == DelayNbassignStmt \|\|
1901	((vl_bassign_stmt *)stmt)->type == EventNbassignStmt) {
1902	}
1903	newCtrlExpr = create_syndrome_expr(vlStrdup(ctrl_syndrome),
1904	new_out, pre_cond, fg_id);
1905	lsNewEnd(id_sym->syndrome_expr_list, (lsGeneric)newCtrlExpr, 0);
1906
1907	st_insert(vars, id_sym->name,
1908	(char*)create_var_info(vl_copy_id_range(id_sym),
1909	out_term));
1910	} else {
1911	syndrome_expr *newCtrlExpr;
1912
1913	if (((vl_bassign_stmt *)stmt)->type == NbassignStmt \|\|
1914	((vl_bassign_stmt *)stmt)->type == DelayNbassignStmt \|\|
1915	((vl_bassign_stmt *)stmt)->type == EventNbassignStmt) {
1916	}
1917
1918	newCtrlExpr = create_syndrome_expr(vlStrdup(rst_ctrl_syndrome),
1919	new_out, pre_cond, fg_id);
1920	lsNewEnd(id_sym->rst_syndrome_expr_list,
1921	(lsGeneric)newCtrlExpr, 0);
1922
1923	st_insert(vars, id_sym->name,
1924	(char*)create_var_info(vl_copy_id_range(id_sym),
1925	out_term));
1926	}
1927	}
1928	break;
1929	}
1930	case WaitStmt: {
1931
1932	if (((vl_wait_stmt*)stmt)->cond == NIL(vl_expr)) {
1933	vl_write_begin_end_stmt(file, ((vl_wait_stmt*)stmt)->stmt,
1934	muxed, muxsel, vars);
1935	}
1936	break;
1937	}
1938	case ForkJoinStmt:
1939	break;
1940	case TaskEnableStmt:
1941	case SysTaskEnableStmt:
1942	break;
1943	case DisableStmt:
1944	break;
1945	case DeassignStmt: {
1946	syndrome_expr *newCtrlExpr;
1947	vl_term *operand_term;
1948	char quasi[MAXSTRLEN];
1949
1950	if (!st_lookup(vl_currentModule->sig_st,
1951	((vl_deassign_stmt*)stmt)->lhs->name->name,
1952	(char**)&id_sym)) {
1953	char buf[MAXSTRLEN];
1954
1955	sprintf(buf, "%s:deassign '%s', which is undefined variable",
1956	vl_currentModule->name->name,
1957	((vl_deassign_stmt*)stmt)->lhs->name->name);
1958	yylineno = -1;
1959	compile_error(buf);
1960	}
1961
1962	sprintf(quasi, "%s%s", id_sym->name, SEP_QUASI);
1963	if (!st_lookup(vl_currentModule->sig_st, quasi, (char**)&id_sym)) {
1964	int retval;
1965	collect_quasi(quasi);
1966	retval = st_lookup(vl_currentModule->sig_st,quasi,(char**)&id_sym);
1967	assert(retval);
1968	}
1969
1970	operand_term =
1971	vl_create_term(((vl_deassign_stmt*)stmt)->lhs->name, 0,-1);
1972	fg_id = fg_fg_id();
1973	pre_cond =
1974	fg_assign_temporal_context((vertex_t*)
1975	(((vl_deassign_stmt*)stmt)->fg_info));
1976	newCtrlExpr = create_syndrome_expr(vlStrdup(ctrl_syndrome),
1977	operand_term, pre_cond, fg_id);
1978	lsNewEnd((!rst_ckt)?id_sym->syndrome_expr_list:
1979	id_sym->rst_syndrome_expr_list,
1980	(lsGeneric)newCtrlExpr, 0);
1981	break;
1982	}
1983	case SendEventStmt: {
1984	char vnt_buf[MAXSTRLEN];
1985
1986	if (!st_lookup(vl_currentModule->sig_st,
1987	((vl_send_event_stmt*)stmt)->name->name,
1988	(char**)&id_sym)) {
1989	char buf[MAXSTRLEN];
1990	sprintf(buf, "variable %s not declared while used as event",
1991	((vl_send_event_stmt*)stmt)->name->name);
1992	yylineno = -1;
1993	compile_error(buf);
1994	}
1995
1996	out_term = new_term(NIL(vl_range), 0, -1);
1997	sprintf(vnt_buf, "%s%s%s", id_sym->name, SEP_GATEPIN, PIN_EVENT);
1998	if (smartEvent)
1999	write_int_connect(file, 1, out_term);
2000	else
2001	vl_write_bit_connect(file, vnt_buf, out_term->name->name, 1);
2002	new_out = vl_copy_term(out_term);
2003
2004	pre_cond =
2005	fg_assign_temporal_context((vertex_t*)
2006	(((vl_send_event_stmt*)stmt)->fg_info));
2007	fg_id = fg_fg_id();
2008
2009	lsNewEnd(id_sym->syndrome_expr_list,
2010	(lsGeneric)create_syndrome_expr(vlStrdup(ctrl_syndrome),
2011	new_out, pre_cond, fg_id),
2012	0);
2013
2014
2015
2016	st_insert(vars, id_sym->name,
2017	(char*)create_var_info(vl_copy_id_range(id_sym), out_term));
2018	break;
2019	}
2020	default: {
2021	char msg[MAXSTRLEN];
2022	sprintf(msg, "vl_write_stmt:Unexpected Statement Type %d",
2023	((vl_bassign_stmt *)stmt)->type);
2024	internal_error(msg);
2025	}
2026	}
2027	return vars;
2028	}
2029
2030
2031	void vl_write_reset_stmt(FILE file, void stmt, st_table *vars)
2032	{
2033	if (stmt == NIL(void)) return;
2034
2035	WrtTRACE("Writing reset statement");
2036
2037	vl_write_stmt(file, stmt, NO_MUX, NIL(vl_term), vars);
2038	}
2039
2040	st_table vl_write_begin_end_stmt(FILE file, vl_begin_end_stmt bestmt, int muxed, vl_term control, st_table *vars)
2041	{
2042	WrtTRACE("Writing begin/end\n");
2043
2044	vl_write_decl_list(file, bestmt->decls, muxed, control, vars);
2045	vars = vl_write_stmt_list(file, bestmt->stmts, muxed, control, vars);
2046	return vars;
2047	}
2048
2049	st_table vl_write_if_else_stmt(FILE file, vl_if_else_stmt stmt, st_table vars)
2050	{
2051	st_table t_vars, f_vars;
2052	st_generator *gen;
2053	char *key;
2054	var_info t_in, f_in, *cur_var;
2055	int using_ith_ctrl;
2056	vl_term sel, tmp_term;
2057
2058	WrtTRACE("Writing if/then/else statement");
2059
2060	if (!rst_ckt) {
2061	using_ith_ctrl = ith_ctrl;
2062	ith_ctrl++;
2063	} else {
2064	using_ith_ctrl = rst_ith_ctrl;
2065	rst_ith_ctrl++;
2066	}
2067
2068
2069	if (!stmt->else_stmt) {
2070	if (sensitiveList && vl_currentModule->combVar_st) {
2071	if (chk_IncompleteBranch) {
2072	char buf[MAXSTRLEN];
2073	recordCombAlways = 0;
2074	vl_currentModule->combVar_st = NIL(set_t);
2075	vl_step_stmt(stderr, stmt);
2076	sprintf(buf,
2077	"%s:incomplete if/ese, combinational reduction failed",
2078	vl_currentModule->name->name);
2079	yylineno = -1;
2080	compile_error(buf);
2081	}
2082	}
2083	}
2084
2085	vl_write_expr(file, stmt->cond, vars);
2086
2087
2088
2089	tmp_term = new_term(NIL(vl_range), 0, -1);
2090	if (!stmt->cond->term) {
2091	sel = new_term(NIL(vl_range), 0, -1);
2092	vl_write_const(file, stmt->cond, sel);
2093	stmt->cond->term = sel;
2094	} else if (stmt->cond->term->lo <= stmt->cond->term->hi) {
2095	sel = new_term(NIL(vl_range), 0, -1);
2096	vl_write_vector_bop(file, UorExpr,
2097	stmt->cond->term, NIL(vl_term), sel);
2098	} else {
2099	sel = stmt->cond->term;
2100	}
2101
2102	assert ((stmt->cond->fg_info1 && stmt->cond->fg_info2) \|\| (!stmt->cond->fg_info1 && !stmt->cond->fg_info2));
2103
2104
2105	if (stmt->cond->fg_info1)
2106	fg_update_node_info((vertex_t)(stmt->cond->fg_info1), (char)sel);
2107
2108
2109	if (stmt->cond->fg_info1) {
2110
2111	fg_if_collect_pause_rewrite_ctrl(file,
2112	(vertex_t)stmt->cond->fg_info1, (vertex_t)stmt->cond->fg_info2,
2113	&sel);
2114	stmt->cond->term = sel;
2115	}
2116
2117	vl_write_bin_connect(file, sel, tmp_term, 0);
2118	if (!rst_ckt)
2119	lsNewEnd(ctrl_list, (lsGeneric)tmp_term, 0);
2120	else
2121	lsNewEnd(rst_ctrl_list, (lsGeneric)tmp_term, 0);
2122
2123	t_vars = st_copy(vars);
2124	f_vars = st_copy(vars);
2125	dup_info_var_in_st(t_vars);
2126	dup_info_var_in_st(f_vars);
2127	reset_cond_list_in_st(t_vars);
2128	reset_cond_list_in_st(f_vars);
2129
2130	if (!rst_ckt)
2131	ctrl_syndrome[using_ith_ctrl] = '1';
2132	else
2133	rst_ctrl_syndrome[using_ith_ctrl] = '1';
2134	t_vars = vl_write_stmt(file,stmt->if_stmt,MUX_T, stmt->cond->term,t_vars);
2135	if (!rst_ckt)
2136	ctrl_syndrome[using_ith_ctrl] = '0';
2137	else
2138	rst_ctrl_syndrome[using_ith_ctrl] = '0';
2139	f_vars = vl_write_stmt(file,stmt->else_stmt,MUX_F,stmt->cond->term,f_vars);
2140	if (!rst_ckt)
2141	ctrl_syndrome[using_ith_ctrl] = '-';
2142	else
2143	rst_ctrl_syndrome[using_ith_ctrl] = '-';
2144
2145	fprintf(file, "%s if/else (", HSIS_COMMENT);
2146	(void)vl_step_expr(file, stmt->cond);
2147	fprintf(file, ")\n");
2148
2149	vars = create_var_muxes(file, stmt->cond->term, t_vars, f_vars, vars);
2150
2151	gen = st_init_gen(t_vars);
2152	while (st_gen(gen, &key, (char**)&t_in)) {
2153	st_delete(t_vars, &key, (char**)&t_in);
2154	if (st_lookup(vars, key, (char**)&cur_var))
2155	if (cur_var == t_in)
2156	continue;
2157	free_var_info(t_in);
2158	}
2159	st_free_gen(gen);
2160	gen = st_init_gen(f_vars);
2161	while (st_gen(gen, &key, (char**)&f_in)) {
2162	st_delete(t_vars, &key, (char**)&f_in);
2163	if (st_lookup(vars, key, (char**)&cur_var))
2164	if (cur_var == f_in)
2165	continue;
2166	free_var_info(f_in);
2167	}
2168	st_free_gen(gen);
2169
2170
2171
2172	return vars;
2173	}
2174
2175
2176	st_table vl_write_case_stmt(FILE file, vl_case_stmt stmt, st_table vars)
2177	{
2178	st_table **case_vars;
2179	int i;
2180	vl_case_item *item;
2181	lsHandle handle;
2182	lsGen gen;
2183	vl_term *controls, prev_ctrl = NIL(vl_term);
2184	vl_term *pause_ripple=NIL(vl_term);
2185	int using_ith_ctrl = -1;
2186	char old_ctrl_syndrome[MAXSTRLEN];
2187
2188	WrtTRACE("Writing case\n");
2189
2190	if (!rst_ckt)
2191	strcpy(old_ctrl_syndrome, ctrl_syndrome);
2192	else
2193	strcpy(old_ctrl_syndrome, rst_ctrl_syndrome);
2194
2195	assert((stmt->cond->fg_info1 && stmt->cond->fg_info2) \|\| (!stmt->cond->fg_info1 && !stmt->cond->fg_info2));
2196
2197	switch (stmt->type) {
2198	case CaseStmt:
2199	case CasexStmt:
2200	case CasezStmt: break;
2201	default:
2202	internal_error("Unexpected Case Type"); break;
2203	}
2204
2205
2206
2207	{
2208	vl_write_expr(file, stmt->cond, vars);
2209
2210	case_vars = (st_table*)chk_malloc(lsLength(stmt->case_items)
2211	sizeof(st_table*));
2212	controls = (vl_term*)chk_malloc(lsLength(stmt->case_items)
2213	sizeof(vl_term*));
2214	for (i=0; i<lsLength(stmt->case_items); i++) {
2215	case_vars[i] = NIL(st_table);
2216	controls[i] = NIL(vl_term);
2217	}
2218
2219	for (gen = lsStart(stmt->case_items), i = 0;
2220	(lsNext(gen,(lsGeneric*)&item,&handle) != LS_NOMORE);
2221	i++) {
2222
2223	controls[i] =
2224	write_case_comparator(file,
2225	stmt->cond->term, item->exprs, vars);
2226
2227
2228	if (item->fg_info) {
2229	vertex_t *src_tag;
2230	src_tag = g_e_dest((edge_t*)item->fg_info);
2231	if (!controls[i]) {
2232	controls[i] = true_term(file);
2233	}
2234	fg_update_node_info((vertex_t*)(item->fg_info),
2235	(char*)controls[i]);
2236	fg_case_collect_pause_rewrite_ctrl(file,
2237	src_tag, (vertex_t*)stmt->cond->fg_info2,
2238	&controls[i], &pause_ripple);
2239	}
2240
2241	if (item->type == CaseItem) {
2242	if (!rst_ckt) {
2243	lsNewEnd(ctrl_list, (lsGeneric)controls[i], 0);
2244	using_ith_ctrl = ith_ctrl;
2245	ith_ctrl++;
2246	ctrl_syndrome[using_ith_ctrl] = '1';
2247	} else {
2248	lsNewEnd(rst_ctrl_list, (lsGeneric)controls[i], 0);
2249	using_ith_ctrl = rst_ith_ctrl;
2250	rst_ith_ctrl++;
2251	rst_ctrl_syndrome[using_ith_ctrl] = '1';
2252	}
2253	}
2254
2255
2256
2257	case_vars[i] = st_copy(vars);
2258	dup_info_var_in_st(case_vars[i]);
2259	reset_cond_list_in_st(case_vars[i]);
2260	case_vars[i] =
2261	vl_write_stmt(file, item->stmt,
2262	(controls[i])?MUX_T:NO_MUX,
2263	(controls[i])?controls[i]:NIL(vl_term),
2264	case_vars[i]);
2265	if (item->type == CaseItem) {
2266	if (!rst_ckt)
2267	ctrl_syndrome[using_ith_ctrl] = '0';
2268	else
2269	rst_ctrl_syndrome[using_ith_ctrl] = '0';
2270	}
2271
2272	prev_ctrl = controls[i];
2273	}
2274	(void)lsFinish(gen);
2275
2276	if (pause_ripple) {
2277	fprintf(file, ".names %s\n0\n", pause_ripple->name->name);
2278	}
2279	}
2280
2281	if (!rst_ckt)
2282	strcpy(ctrl_syndrome, old_ctrl_syndrome);
2283	else
2284	strcpy(rst_ctrl_syndrome, old_ctrl_syndrome);
2285
2286	fprintf(file, "%s case (", HSIS_COMMENT);
2287	vl_step_expr(file, stmt->cond);
2288	fprintf(file, ")\n");
2289
2290	if (!prev_ctrl \|\| vl_currentFunction) {
2291
2292
2293	st_table vars_tmp, vars_else;
2294	i=lsLength(stmt->case_items)-1;
2295	vars_else = case_vars[i];
2296	for (i -= 2; i>=0; i--) {
2297	vars_tmp = st_copy(vars);
2298	dup_info_var_in_st(vars_tmp);
2299	reset_cond_list_in_st(vars_tmp);
2300	create_var_muxes(file, controls[i+1],
2301	case_vars[i+1], vars_else, vars_tmp);
2302	vars_else = vars_tmp;
2303	}
2304	create_var_muxes(file, controls[0],
2305	case_vars[0], vars_else, vars);
2306	} else {
2307
2308	for (i=lsLength(stmt->case_items)-1; i>=0; i--) {
2309	case_vars[i] = create_var_muxes(file, controls[i],
2310	case_vars[i], st_copy(vars), vars);
2311	}
2312	}
2313
2314	return vars;
2315	}
2316
2317
2318	void vl_write_cont_assign(FILE file, vl_cont_assign assign, st_table *vars)
2319	{
2320	vl_id_range *lhs_id;
2321	lsGen gen;
2322	lsHandle handle;
2323	vl_bassign_stmt *a;
2324	vl_term *lhs_term;
2325	int true_hi=0, true_lo=0;
2326	int num_lhs_vars;
2327	int cur_bit_pos;
2328	lsList lhs_list;
2329	lsGen lhs_gen=(lsGen)0;
2330	lsHandle lhs_handle;
2331	vl_expr *lhs_expr;
2332	vl_id_range *lhs_var;
2333	vl_range *lhs_range;
2334	int i;
2335
2336	WrtTRACE("Writing cont_assign\n");
2337
2338	for (gen = lsStart(assign->assigns);
2339	lsNext(gen, (lsGeneric*)&a, &handle) != LS_NOMORE; ) {
2340	a->type = AssignStmt;
2341	if (a->lhs->type == MinTypMaxExpr)
2342	a->lhs->name = (vl_id_range)((vl_expr)a->lhs->name)->u.exprs.e1;
2343
2344	if (a->lhs->type == ConcatExpr) {
2345	num_lhs_vars = lsLength(a->lhs->concat);
2346	lhs_list = a->lhs->concat;
2347	lhs_gen = lsStart(lhs_list);
2348	} else {
2349	num_lhs_vars = 1;
2350	lhs_list = (lsList)0;
2351	}
2352
2353	for (i=0; i<num_lhs_vars; i++) {
2354	if (lhs_list) {
2355	int retval = lsNext(lhs_gen,(lsGeneric*)&lhs_expr,&lhs_handle);
2356	assert(retval != LS_NOMORE);
2357	lhs_var = lhs_expr->u.name;
2358	lhs_range = lhs_var->range;
2359	} else {
2360	lhs_var = a->lhs->name;
2361	lhs_range = a->lhs->range;
2362	}
2363	if (!st_lookup(vl_currentModule->sig_st,
2364	lhs_var->name, (char**)&lhs_id)) {
2365	int retval;
2366	st_insert(vl_currentModule->sig_st, lhs_var->name,
2367	(char*)vl_create_id_range(lhs_var->name,
2368	NIL(vl_range)));
2369	retval = st_lookup(vl_currentModule->sig_st, lhs_var->name,
2370	(char**)&lhs_id);
2371	assert(retval);
2372	}
2373	}
2374	if (lhs_list) lsFinish(lhs_gen);
2375	nd_check_ok = 1;
2376
2377	lhs_term = vl_write_assign(file, a, 0, NIL(vl_term), NIL(st_table));
2378
2379	nd_check_ok = 0;
2380	if (vis_nond_var) {
2381	vis_nond_var = 0;
2382	return;
2383	}
2384
2385
2386	if (lhs_list) {
2387	assert(array_n(assign_array) == num_lhs_vars);
2388	lhs_gen = lsStart(lhs_list);
2389	true_lo = lhs_term->lo;
2390	true_hi = lhs_term->hi;
2391	}
2392	for (i=0, cur_bit_pos=0; i<num_lhs_vars; i++) {
2393	if (lhs_list) {
2394	int retval = lsNext(lhs_gen,(lsGeneric*)&lhs_expr,&lhs_handle);
2395	assert(retval != LS_NOMORE);
2396	retval = st_lookup(vl_currentModule->sig_st,
2397	lhs_expr->u.name->name, (char**)&lhs_id);
2398	assert(retval);
2399	}
2400	if (lhs_list) lhs_term = array_fetch(vl_term*, assign_array, i);
2401	if (!(lhs_id->flags & InPort && !(lhs_id->flags & OutPort)))
2402	st_insert(vars, lhs_id->name,
2403	(char*)create_var_info(vl_copy_id_range(lhs_id),
2404	lhs_term));
2405	else {
2406	vl_id_range *id_sym;
2407	int retval = st_lookup(vl_currentModule->sig_st,
2408	lhs_id->name, (char**)&id_sym);
2409	assert(retval);
2410	id_sym->name = lhs_term->name->name;
2411	}
2412	}
2413	if (lhs_list) {
2414	lsFinish(lhs_gen);
2415	lhs_term->lo = true_lo;
2416	lhs_term->hi = true_hi;
2417	array_free(assign_array);
2418	}
2419	}
2420	(void)lsFinish(gen);
2421	}
2422
2423
2424	void vl_write_wiring_assign(FILE file, vl_netdecl assignments, st_table *vars)
2425	{
2426	vl_id_range *lhs_id;
2427	lsGen gen;
2428	lsHandle handle;
2429	vl_bassign_stmt *a;
2430	vl_term *lhs_term;
2431	int hi, lo;
2432
2433	WrtTRACE("Writing wire_assign\n");
2434
2435
2436
2437	gen = lsStart(assignments->ids);
2438	if (lsNext(gen, (lsGeneric*)&a, &handle) == LS_OK) {
2439	if (a->type == BassignStmt) {
2440	a->type = AssignStmt;
2441	st_lookup(vl_currentModule->sig_st,
2442	a->lhs->name->name, (char**)&lhs_id);
2443	get_hilo(lhs_id, &hi, &lo);
2444	lhs_term = vl_write_assign(file,a,0,NIL(vl_term),NIL(st_table));
2445	st_insert(vars, lhs_id->name,
2446	(char*)create_var_info(vl_copy_id_range(lhs_id),
2447	lhs_term));
2448	}
2449	while (lsNext(gen, (lsGeneric*)&a, &handle) != LS_NOMORE) {
2450	if (a->type == BassignStmt) {
2451	st_lookup(vl_currentModule->sig_st,
2452	a->lhs->name->name, (char**)&lhs_id);
2453	get_hilo(lhs_id, &hi, &lo);
2454	a->type = AssignStmt;
2455	lhs_term = vl_write_assign(file,
2456	a, 0, NIL(vl_term), NIL(st_table));
2457	st_insert(vars, lhs_id->name,
2458	(char*)create_var_info(vl_copy_id_range(lhs_id),
2459	lhs_term));
2460	}
2461	}
2462	}
2463	(void)lsFinish(gen);
2464	}
2465
2466	st_table vl_write_event_control_stmt(FILE file, vl_event_control_stmt stmt, st_table vars)
2467	{
2468	int old_recordCombAlways;
2469	set_t *old_sensitiveList;
2470	vl_term *old_edge_triggering;
2471
2472	WrtTRACE("Writing event_control_stmt\n");
2473
2474
2475
2476
2477
2478	old_recordCombAlways = recordCombAlways;
2479	if (stmt->event->type == OrEventExpr \|\| stmt->event->type == EventExpr)
2480	recordCombAlways = 1;
2481
2482
2483
2484	old_edge_triggering = edge_triggering;
2485	old_sensitiveList = sensitiveList;
2486	sensitiveList = vl_write_event_expr(file, stmt->event);
2487
2488
2489
2490
2491	vars = vl_write_stmt(file, stmt->stmt, 0, NIL(vl_term), vars);
2492
2493	edge_triggering = old_edge_triggering;
2494	recordCombAlways = old_recordCombAlways;
2495	sensitiveList = old_sensitiveList;
2496
2497	return vars;
2498	}
2499
2500
2501	vl_term vl_write_assign(FILE file, vl_bassign_stmt assign, int muxed, vl_term muxsel, st_table *vars)
2502	{
2503	char latch_name[MAXSTRLEN];
2504	vl_id_range *lhs_id=NIL(vl_id_range);
2505	vl_term term_out=NIL(vl_term), assign_term=NIL(vl_term),
2506	*retval=NIL(vl_term);
2507	int lo, hi;
2508	int old_lhs_hi, old_lhs_lo;
2509	vl_term *old_lhs_term;
2510	char buf[MAXSTRLEN];
2511	lsList lhs_list;
2512	lsGen lhs_gen=(lsGen)0;
2513	lsHandle lhs_handle;
2514	vl_expr *lhs_expr;
2515	int num_lhs_vars;
2516	vl_id_range *lhs_var;
2517	vl_range *lhs_range;
2518	int i;
2519
2520	WrtTRACE("Writing assign_stmt\n");
2521
2522	fprintf(file, "%s ", HSIS_COMMENT);
2523	if (!NoDetailedComment) vl_step_bassign_stmt(file, assign);
2524	fprintf(file, "\n");
2525
2526	assert(assign->type!=DelayBassignStmt &&
2527	assign->type != DelayNbassignStmt &&
2528	assign->type != EventBassignStmt &&
2529	assign->type != EventNbassignStmt);
2530
2531	if (assign->lhs->type == ConcatExpr) {
2532	num_lhs_vars = lsLength(assign->lhs->concat);
2533	lhs_list = assign->lhs->concat;
2534	lhs_gen = lsStart(lhs_list);
2535	assign_array = array_alloc(vl_term*, 0);
2536	} else {
2537	num_lhs_vars = 1;
2538	lhs_list = (lsList)0;
2539	}
2540
2541	for (i=0; i<num_lhs_vars; i++) {
2542	if (lhs_list) {
2543	int retval = lsNext(lhs_gen,(lsGeneric*)&lhs_expr,&lhs_handle);
2544	assert(retval != LS_NOMORE);
2545	lhs_var = lhs_expr->u.name;
2546	lhs_range = lhs_var->range;
2547	} else {
2548	lhs_var = assign->lhs->name;
2549	lhs_range = assign->lhs->range;
2550	}
2551
2552	if (!st_lookup(vl_currentModule->sig_st,
2553	lhs_var->name, (char**)&lhs_id)) {
2554	char buf[MAXSTRLEN];
2555	yylineno = assign->lineno;
2556	sprintf(buf, "'%s':'%s' is an undeclared variable",
2557	vl_currentModule->name->name, lhs_var->name);
2558	compile_error(buf);
2559	}
2560	if (assign->type == NbassignStmt \|\|
2561	assign->type == DelayNbassignStmt \|\|
2562	assign->type == EventNbassignStmt) {
2563
2564	vl_id_range *id_sym;
2565	sprintf(latch_name, "%s%s", lhs_var->name, SEP_LATCH);
2566	st_lookup(vl_currentModule->sig_st, latch_name, (char**)&id_sym);
2567	id_sym->flags = lhs_id->flags;
2568	lhs_id = id_sym;
2569	} else if (assign->type == AssignStmt && vars) {
2570
2571	vl_id_range *id_sym;
2572	sprintf(latch_name, "%s%s", lhs_var->name, SEP_QUASI);
2573	if (!st_lookup(vl_currentModule->sig_st,
2574	latch_name,(char**)&id_sym)) {
2575	int retval;
2576	collect_quasi(lhs_var->name);
2577	retval = st_lookup(vl_currentModule->sig_st,
2578	latch_name,(char**)&id_sym);
2579	assert(retval);
2580	}
2581	id_sym->flags = lhs_id->flags;
2582	lhs_id = id_sym;
2583	} else {
2584
2585	}
2586
2587	if (lhs_id->flags & InPort && !(lhs_id->flags & OutPort)) {
2588	char msg[MAXSTRLEN];
2589	sprintf(msg, "%s:%s is input variable while used as lhs",
2590	vl_currentModule->name->name, lhs_id->name);
2591
2592	}
2593
2594	if (!lhs_list) {
2595	if (vars)
2596	check_assign(assign, 1);
2597	else
2598	check_assign(assign, 0);
2599	}
2600	get_hilo(lhs_id, &hi, &lo);
2601
2602
2603	if (!muxed) {
2604	if (vars) {
2605
2606	sprintf(buf, "%s%s%s%s", lhs_id->name,
2607	SEP_GATEPIN, PIN_RAWOUT, new_termname());
2608	} else {
2609
2610	sprintf(buf, "%s%s%s%s", lhs_id->name,
2611	SEP_GATEPIN, PIN_RAWOUT, new_termname());
2612	}
2613	} else {
2614	if (muxed & 1) {
2615	sprintf(buf, "%s%s%s%s%s%s", lhs_id->name,
2616	SEP_GATEPIN, muxsel->name->name, new_termname(),
2617	SEP_GATEPIN, PIN_TRUE);
2618	} else {
2619	sprintf(buf, "%s%s%s%s%s%s", lhs_id->name,
2620	SEP_GATEPIN, muxsel->name->name, new_termname(),
2621	SEP_GATEPIN, PIN_FALSE);
2622	}
2623	}
2624	assign_term = term_out = create_rename_term(lhs_id, buf, lo, hi);
2625	assign_term->flag = lhs_id->flags;
2626	assign_term->term_type = lhs_id->id_type;
2627
2628	if (!(vis_nond && assign->rhs->type == NondExpr) \|\| rst_ckt)
2629	write_var_decl(file, assign_term);
2630
2631	if (lhs_range) {
2632	if (lhs_id->range) {
2633
2634	var_info *cur_var;
2635	vl_term *orig_term;
2636
2637	vl_write_expr(file, lhs_range->left, vars);
2638	if (vars) {
2639	if (st_lookup(vars, lhs_id->name, (char**)&cur_var)) {
2640	orig_term = cur_var->current_terminal;
2641	} else {
2642	orig_term = vl_create_term(lhs_var, lo, hi);
2643	orig_term->flag = lhs_id->flags;
2644	orig_term->term_type = lhs_id->id_type;
2645	}
2646	} else {
2647	orig_term = vl_create_term(lhs_var, lo, hi);
2648	}
2649	assign_term = new_term(NIL(vl_range), lo, hi);
2650	assign_term->flag = lhs_id->flags;
2651	assign_term->term_type = lhs_id->id_type;
2652	write_var_decl(file, assign_term);
2653	write_switch(file, lhs_id, lhs_range->left->term,
2654	lhs_range->left, orig_term, assign_term, term_out);
2655	} else {
2656
2657	int left, right;
2658
2659	left = vl_eval_expr(lhs_range->left);
2660	if (lhs_range->right)
2661	right = vl_eval_expr(lhs_range->right);
2662	else
2663	right = left;
2664	assign_term->term_type = lhs_id->id_type;
2665	assign_term->lo = left;
2666	assign_term->hi = right;
2667	}
2668	}
2669
2670	if (assign_term->lo > assign_term->hi) {
2671	if (assign_term->lo != 0 && assign_term->hi != -1) {
2672	int temp;
2673
2674	temp = assign_term->lo;
2675	assign_term->lo = assign_term->hi;
2676	assign_term->hi = temp;
2677	}
2678	}
2679
2680	if (lhs_list) {
2681
2682
2683	array_insert_last(vl_term*, assign_array, assign_term);
2684	}
2685	}
2686
2687	if (lhs_list) {
2688	lsFinish(lhs_gen);
2689	assign_term = concate_assigns(assign_array);
2690	write_var_decl(file, assign_term);
2691	}
2692
2693	switch(assign->type) {
2694
2695	case BassignStmt:
2696	case NbassignStmt:
2697	case AssignStmt: {
2698
2699	old_lhs_hi = lhs_hi;
2700	old_lhs_lo = lhs_lo;
2701	old_lhs_term = lhs_term;
2702	lhs_hi = assign_term->hi;
2703	lhs_lo = assign_term->lo;
2704	lhs_term = assign_term;
2705
2706	vl_write_expr(file, assign->rhs, vars);
2707
2708	lhs_hi = old_lhs_hi;
2709	lhs_lo = old_lhs_lo;
2710	lhs_term = old_lhs_term;
2711
2712	break;
2713	}
2714
2715	case DelayBassignStmt: break;
2716	case DelayNbassignStmt: break;
2717
2718	case EventBassignStmt: break;
2719	case EventNbassignStmt: break;
2720	default: break;
2721	}
2722
2723
2724	if (!rst_ckt) {
2725	if (!lhs_list)
2726	dump_debug_information(file, assign->lhs->name, assign_term,
2727	assign->lineno, ctrl_list, ctrl_syndrome);
2728	}
2729
2730	if (vis_nond_var && !vars) {
2731	return retval;
2732	}
2733
2734
2735	if (ISVLCONST(assign->rhs->type) && assign->rhs->type != BitExpr) {
2736	vl_write_const(file, assign->rhs, assign_term);
2737	if (!(assign_term->flag & MVar)) {
2738
2739	var_info *cur_var;
2740	vl_term *orig_term;
2741	if (vars && !lhs_list) {
2742
2743	if (st_lookup(vars, lhs_id->name, (char**)&cur_var)) {
2744	orig_term = cur_var->current_terminal;
2745	} else {
2746	orig_term = vl_create_term(assign->lhs->name, lo, hi);
2747	}
2748	patch_unaffected_term(file, lhs_id, orig_term, assign_term);
2749	} else if (lhs_list) {
2750	connect_concat(file, assign_term, assign_array);
2751	}
2752	}
2753	} else {
2754	if ((term_out->flag & MVar) == (assign->rhs->term->flag & MVar)) {
2755	if (assign->rhs->term->flag & MVar) {
2756	vl_write_mv_connect(file, assign->rhs->term, assign_term);
2757	} else {
2758	var_info *cur_var;
2759	vl_term *orig_term;
2760
2761	vl_write_bin_connect(file, assign->rhs->term, assign_term, 0);
2762
2763	if (vars && !lhs_list) {
2764	if (st_lookup(vars, lhs_id->name, (char**)&cur_var)) {
2765	orig_term = cur_var->current_terminal;
2766	} else {
2767	orig_term = vl_create_term(assign->lhs->name, lo, hi);
2768	}
2769	patch_unaffected_term(file, lhs_id, orig_term, assign_term);
2770	} else if (lhs_list) {
2771	connect_concat(file, assign_term, assign_array);
2772	}
2773	}
2774	} else {
2775	char buf[MAXSTRLEN];
2776
2777	sprintf(buf, "connecting incompatible wires '%s' and '%s'",
2778	assign_term->name->name,assign->rhs->term->name->name);
2779	compile_error(buf);
2780	}
2781	vl_free_term(assign->rhs->term);
2782	}
2783
2784	retval = term_out;
2785
2786	return retval;
2787	}
2788
2789
2790	st_table vl_write_decl_list(FILE file, void decls, int muxed, vl_term control, st_table *vars)
2791	{
2792
2793	file = file;
2794	decls = decls;
2795	muxed = muxed;
2796	control = control;
2797
2798	return vars;
2799	}
2800
2801	st_table vl_write_stmt_list(FILE file, lsList stmts, int muxed, vl_term control, st_table vars)
2802	{
2803	void *stmt;
2804	lsHandle handle;
2805	lsGen gen;
2806	st_table *new_vars;
2807	lsList vars_list, pause_list;
2808	set_t *pauseSet;
2809
2810	WrtTRACE("Writing stmt_list\n");
2811
2812	pauseSet = set_empty();
2813	if (vl_pauseStack) push_stack(vl_pauseStack, (void*)pauseSet);
2814	pause_list = lsCreate();
2815	vars_list = lsCreate();
2816
2817	for (gen = lsStart(stmts);
2818	lsNext(gen, (lsGeneric*)&stmt, &handle) != LS_NOMORE; ) {
2819	new_vars = vl_write_stmt(file, stmt, muxed, control, vars);
2820
2821
2822	vars = new_vars;
2823	}
2824	(void) lsFinish(gen);
2825	if (vl_pauseStack) pop_stack(vl_pauseStack, (void**)&pauseSet);
2826	set_destroy(pauseSet);
2827
2828
2829
2830	lsDestroy(vars_list, 0);
2831	lsDestroy(pause_list, (void (*)(lsGeneric))set_destroy);
2832
2833	return vars;
2834	}
2835
2836
2837	void vl_write_expr_list(FILE file, lsList exprs, st_table vars)
2838	{
2839	vl_expr *expr;
2840	lsHandle handle;
2841	lsGen gen;
2842
2843	WrtTRACE("Writing expr_list\n");
2844
2845	if (!exprs) return;
2846	gen = lsStart(exprs);
2847	if (lsNext(gen, (lsGeneric*)&expr, &handle) == LS_OK) {
2848	vl_write_expr(file, expr, vars);
2849	while (lsNext(gen, (lsGeneric*)&expr, &handle) != LS_NOMORE) {
2850	vl_write_expr(file, expr, vars);
2851	}
2852	}
2853	(void)lsFinish(gen);
2854	}
2855
2856
2857
2858	void vl_write_expr(FILE file, vl_expr expr, st_table *vars)
2859	{
2860	int lo, hi, sub_hi, sub_lo, inverted;
2861	vl_term term_in1, term_in2, term_out, idx_term;
2862	vl_id_range *id_sym;
2863	var_info *id_var_info;
2864	char term1[MAXSTRLEN/8];
2865	char *ripple=NIL(char);
2866	int auto_declared = 0;
2867	int hibit;
2868	FILE *bufStream;
2869
2870	if (!expr) return;
2871
2872	WrtTRACE("write expr");
2873
2874	switch (expr->type) {
2875	case BitExpr:
2876
2877	hibit = strlen((char*)expr->u.exprs.e3)-1;
2878	term_out = new_term(NIL(vl_range), 0, (hibit==0)?-1:hibit);
2879	write_var_decl(file, term_out);
2880	if (lhs_term)
2881	term_out->flag = lhs_term->flag;
2882	vl_write_const(file, expr, term_out);
2883	expr->term = term_out;
2884	break;
2885	case IntExpr: break;
2886	case RealExpr: break;
2887	case IDExpr:
2888	if (vars) {
2889
2890	if (st_lookup(vars, expr->u.name->name, (char**)&id_var_info)) {
2891
2892
2893	expr->term = term_out =
2894	vl_copy_term(id_var_info->current_terminal);
2895	break;
2896	}
2897	}
2898
2899	{
2900	int const_expr;
2901	vl_id_range *ival;
2902	const_expr = 0;
2903	if (vl_currentModule->param_st) {
2904	if (st_lookup(vl_currentModule->param_st,
2905	expr->u.name->name, (char**)&ival))
2906	const_expr = 1;
2907	}
2908	if (!const_expr && vl_encloseModule) {
2909	if (vl_encloseModule->param_st)
2910	if (st_lookup(vl_encloseModule->param_st,
2911	expr->u.name->name, (char**)&ival))
2912	const_expr = 1;
2913	}
2914	if (const_expr) {
2915	write_const_param(file, expr, ival);
2916	break;
2917	}
2918	}
2919
2920
2921
2922	if (!st_lookup(vl_currentModule->sig_st,
2923	expr->u.name->name, (char**)&id_sym)){
2924	if (implicitDeclare) {
2925	int retval;
2926	st_insert(vl_currentModule->sig_st, expr->u.name->name,
2927	(char*)vl_create_id_range(expr->u.name->name,
2928	NIL(vl_range)));
2929	retval = st_lookup(vl_currentModule->sig_st,expr->u.name->name,
2930	(char**)&id_sym);
2931	assert(retval);
2932	auto_declared = 1;
2933	} else {
2934	char msg[MAXSTRLEN/8];
2935	yylineno = -1;
2936	sprintf(msg, "'%s':%s not defined",
2937	vl_currentModule->name->name, expr->u.name->name);
2938	compile_error(msg);
2939	}
2940	} else {
2941	id_sym->flags \|= AccessedVar;
2942	}
2943
2944
2945
2946	if (sensitiveList) {
2947
2948	if (check_rhs_sensitivity) {
2949	if (!set_find(id_sym->name, sensitiveList)) {
2950	recordCombAlways = 0;
2951	if (vl_currentModule->combVar_st) {
2952	vl_currentModule->combVar_st = NIL(set_t);
2953	{
2954	char buf[MAXSTRLEN/8];
2955	sprintf(buf,
2956	"%s:combinational reduction failed on %s",
2957	vl_currentModule->name->name,
2958	id_sym->name);
2959	yylineno = -1;
2960	compile_error(buf);
2961	}
2962	}
2963	}
2964	}
2965	}
2966
2967	get_hilo(id_sym, &hi, &lo);
2968	if (!(id_sym->flags & RegVar) && !(id_sym->flags & InPort) &&
2969	!(id_sym->flags & WireVar) && in_procedure && wireRegister) {
2970
2971	char buf[MAXSTRLEN/8];
2972	sprintf(buf, "%s%s", expr->u.name->name, PIN_HIDDEN);
2973	id_sym->flags \|= HiddenLatch;
2974	expr->term = term_out =
2975	create_rename_term(expr->u.name, vlStrdup(buf), lo, hi);
2976	} else if (!((id_sym->flags & InPort) && (id_sym->flags & RegVar))) {
2977	expr->term = term_out =
2978	vl_create_term(vl_copy_id_range(id_sym), lo, hi);
2979	} else {
2980
2981	char buf[MAXSTRLEN/8];
2982	expr->term = term_out =
2983	vl_create_term(vl_copy_id_range(expr->u.name), lo, hi);
2984	sprintf(buf, "%s%s%s", expr->term->name->name, SEP_DIR, PIN_IN);
2985	vl_chk_free(expr->term->name->name);
2986	expr->term->name->name = vlStrdup(buf);
2987	}
2988	if (auto_declared) id_sym->flags \|= AutoDeclared;
2989	term_out->flag = id_sym->flags;
2990	term_out->term_type = id_sym->id_type;
2991	break;
2992
2993
2994
2995
2996
2997
2998	case BitSelExpr: case PartSelExpr:
2999
3000	if (vars) {
3001
3002	int const_expr;
3003	vl_id_range *ival;
3004	const_expr = 0;
3005	if (vl_currentModule->param_st) {
3006	if (st_lookup(vl_currentModule->param_st,
3007	expr->u.name->name, (char**)&ival))
3008	const_expr = 1;
3009	}
3010	if (!const_expr && vl_encloseModule) {
3011	if (vl_encloseModule->param_st)
3012	if (st_lookup(vl_encloseModule->param_st,
3013	expr->u.name->name, (char**)&ival))
3014	const_expr = 1;
3015	}
3016	if (const_expr) {
3017	write_const_param(file, expr, ival);
3018	break;
3019	}
3020
3021	if (st_lookup(vars, expr->u.name->name, (char**)&id_var_info)) {
3022
3023	if (id_var_info->current_terminal->name->range) {
3024
3025	vl_write_expr(file, expr->u.idrng->range->left, vars);
3026	idx_term = expr->u.idrng->range->left->term;
3027	expr->term = write_array_access(file,
3028	id_var_info->current_terminal->name,
3029	idx_term,
3030	expr->u.idrng->range->left);
3031	break;
3032	}
3033	} else {
3034
3035	if (!st_lookup(vl_currentModule->sig_st,
3036	expr->u.name->name, (char**)&id_sym)) {
3037	char buf[MAXSTRLEN/8];
3038	sprintf(buf, "'%s': indexing into an undeclared var %s",
3039	vl_currentModule->name->name,
3040	expr->u.name->name);
3041	yylineno = -1;
3042	compile_error(buf);
3043	}
3044	if (id_sym->range) {
3045	vl_write_expr(file, expr->u.idrng->range->left, vars);
3046	idx_term = expr->u.idrng->range->left->term;
3047	expr->term = write_array_access(file, id_sym, idx_term,
3048	expr->u.idrng->range->left);
3049	break;
3050	} else {
3051
3052	expr = expr;
3053
3054	}
3055	}
3056	} else {
3057
3058	if (!st_lookup(vl_currentModule->sig_st,
3059	expr->u.name->name, (char**)&id_sym)) {
3060	char buf[MAXSTRLEN/8];
3061
3062	sprintf(buf, "%s:'%s' is an undeclared indexing variable",
3063	vl_currentModule->name->name, expr->u.name->name);
3064	yylineno = -1;
3065	compile_error(buf);
3066	}
3067
3068	if (id_sym->range) {
3069
3070	vl_write_expr(file, expr->u.idrng->range->left, vars);
3071	idx_term = expr->u.idrng->range->left->term;
3072	expr->term = write_array_access(file, id_sym, idx_term,
3073	expr->u.idrng->range->left);
3074	break;
3075	} else {
3076
3077	expr = expr;
3078
3079	}
3080	}
3081
3082
3083
3084	if (vars) {
3085	if (st_lookup(vars, expr->u.name->name, (char**)&id_var_info)) {
3086
3087	expr->term = vl_copy_term(id_var_info->current_terminal);
3088	get_hilo(id_var_info->id, &hi, &lo);
3089	} else {
3090
3091	st_lookup(vl_currentModule->sig_st,
3092	expr->u.name->name, (char**)&id_sym);
3093	get_hilo(id_sym, &hi, &lo);
3094	expr->term = vl_create_term(vl_copy_id_range(expr->u.name),
3095	lo, hi);
3096	}
3097	} else {
3098
3099	st_lookup(vl_currentModule->sig_st,
3100	expr->u.name->name, (char**)&id_sym);
3101	get_hilo(id_sym, &hi, &lo);
3102	expr->term = vl_create_term(vl_copy_id_range(expr->u.name),
3103	lo, hi);
3104	}
3105
3106	if ((lo > hi) && (expr->term->flag & MVar)) {
3107	char buf[MAXSTRLEN/8];
3108	sprintf(buf,"idnexing into a scalar variable %s",
3109	expr->term->name->name);
3110	semantic_error(buf);
3111	}
3112
3113
3114	sub_lo = MAX(lo, vl_eval_expr(expr->u.idrng->range->left));
3115	if (expr->u.idrng->range->right)
3116	sub_hi = MIN(hi, vl_eval_expr(expr->u.idrng->range->right));
3117	else
3118	sub_hi = sub_lo;
3119
3120	if (sub_hi < sub_lo)
3121	if (sub_hi != -1 && sub_lo != 0) {
3122	int temp;
3123
3124	temp = sub_lo;
3125	sub_lo = sub_hi;
3126	sub_hi = temp;
3127	}
3128
3129
3130	expr->term->lo = sub_lo;
3131	expr->term->hi = sub_hi;
3132	break;
3133
3134
3135	case MinTypMaxExpr:
3136	vl_write_expr(file, expr->u.exprs.e1, vars);
3137	expr->term = expr->u.exprs.e1->term;
3138	break;
3139	case ConcatExpr: {
3140	vl_expr *e;
3141	lsHandle handle;
3142	lsGen gen=(lsGen)0;
3143	int bitWidth=0;
3144	int i, j, rep=1;
3145	FILE *new_file;
3146
3147	expr->term = term_out = new_term(NIL(vl_range), 0, -1);
3148	if (expr->u.exprs.e2) {
3149	rep = vl_eval_expr(expr->u.exprs.e2);
3150	}
3151
3152	insideConcat = 1;
3153	term_out->lo = -1;
3154	term_out->hi = -1;
3155	new_file = vl_begin_buffer();
3156	j = 0;
3157	for (i=0; i<rep; i++) {
3158	for (gen = lsEnd((lsList)(expr->u.exprs.e1));
3159	lsPrev(gen, (lsGeneric*)&e, &handle) != LS_NOMORE;) {
3160	vl_write_expr(new_file, e, vars);
3161	if (e->term) {
3162	bitWidth = (e->term->hi-e->term->lo+1);
3163	bitWidth = (bitWidth>0) ? bitWidth : 1;
3164	term_out->lo = term_out->hi + 1;
3165	term_out->hi = term_out->lo + bitWidth - 1;
3166	vl_write_bin_connect(new_file, e->term, term_out, 0);
3167	} else {
3168	if (e->type == IntExpr) {
3169	bitWidth = min_bit_width(e->u.intval);
3170	bitWidth = (bitWidth>0) ? bitWidth : 1;
3171	e->term = new_term(NIL(vl_range), 0, bitWidth-1);
3172	write_int_connect(new_file, e->u.intval, e->term);
3173	term_out->lo = term_out->hi + 1;
3174	term_out->hi = term_out->lo + bitWidth - 1;
3175	vl_write_bin_connect(new_file, e->term, term_out, 0);
3176	} else {
3177	Translate_Warning("unknown width const in concatenation");
3178	bitWidth = 0;
3179	}
3180	}
3181	j++;
3182	}
3183	}
3184	term_out->lo = 0;
3185	write_var_decl(file, term_out);
3186	vl_append_buffer(file, new_file);
3187	vl_close_buffer(new_file);
3188	bitWidth--;
3189	(void) lsFinish(gen);
3190	insideConcat = 0;
3191
3192	break;
3193	}
3194
3195	case StringExpr: break;
3196	case FuncExpr: {
3197	vl_function *func_def;
3198	if (vl_currentFunction) {
3199	vl_currentModule = vl_encloseModule;
3200	}
3201	if (!st_lookup(vl_currentModule->func_st,expr->u.func_call.name->name,
3202	(char**)&func_def)) {
3203	char buf[MAXSTRLEN/8];
3204	sprintf(buf, "'%s':function %s is used before declaration",
3205	vl_currentModule->name->name,
3206	expr->u.func_call.name->name);
3207	yylineno = -1;
3208	compile_error(buf);
3209	} else {
3210	expr->term = instantiate_function(file, func_def,
3211	expr->u.func_call.args, vars);
3212	}
3213	if (vl_currentFunction) {
3214	vl_currentModule = (vl_module*)vl_currentFunction;
3215	}
3216	break;
3217	}
3218	case UplusExpr: case UminusExpr: {
3219	if (expr->type == UminusExpr) {
3220	vl_expr *fake_expr;
3221	fake_expr = vl_create_expr(BminusExpr, 0, (double)0.0,
3222	vl_create_expr(IntExpr, 0, (double)0.0,
3223	NIL(void), NIL(void),
3224	NIL(void)),
3225	expr->u.exprs.e1, NIL(void));
3226	vl_write_expr(file, fake_expr, vars);
3227	vl_chk_free((char*)fake_expr);
3228	expr->term = fake_expr->term;
3229	} else {
3230	vl_write_expr(file, expr->u.exprs.e1, vars);
3231	expr->term = expr->u.exprs.e1->term;
3232	}
3233	break;
3234	}
3235
3236	case UnotExpr:
3237	case UcomplExpr:inverted=1; goto write_expr;
3238
3239	case UnandExpr: expr->type = UandExpr; inverted=1; goto write_expr;
3240	case UnorExpr: expr->type = UorExpr; inverted=1; goto write_expr;
3241	case UxnorExpr: expr->type = UxorExpr; inverted=1; goto write_expr;
3242	case UandExpr: inverted=0; goto write_expr;
3243	case UorExpr: inverted=0; goto write_expr;
3244	case UxorExpr: inverted=0;
3245
3246	write_expr:
3247
3248	vl_write_expr(file, expr->u.exprs.e1, vars);
3249	if (!expr->u.exprs.e1->term) {
3250
3251	int val;
3252	val = vl_eval_expr(expr);
3253	expr->term = term_out = new_term(NIL(vl_range), 0, -1);
3254	vl_write_const(file, expr, expr->term);
3255	break;
3256	}
3257	vl_mv_to_bin(expr->u.exprs.e1->term);
3258	term_in1=expr->u.exprs.e1->term;
3259
3260	expr->term = term_out = new_term(NIL(vl_range), 0, -1);
3261
3262	ripple = BLIF_GND;
3263	if (term_in1->lo <= term_in1->hi) {
3264	if (expr->type != UcomplExpr) {
3265	write_var_decl(file, term_out);
3266	vl_write_vector_red_op(file, expr->type, term_in1, inverted,
3267	term_out);
3268	} else {
3269	term_out->lo = term_in1->lo;
3270	term_out->hi = term_in1->hi;
3271	write_var_decl(file, term_out);
3272	vl_write_bin_connect(file, term_in1, term_out, 1);
3273	}
3274	} else {
3275
3276	write_var_decl(file, term_out);
3277	vl_write_bit_connect(file,
3278	term_in1->name->name, term_out->name->name,
3279	inverted);
3280	}
3281	if (inverted) {
3282	switch (expr->type) {
3283	case UandExpr: expr->type = UnandExpr; break;
3284	case UorExpr: expr->type = UnorExpr; break;
3285	case UxorExpr: expr->type = UxnorExpr; break;
3286	}
3287	}
3288	vl_free_term(term_in1);
3289	break;
3290
3291
3292	case Beq3Expr: case Bneq3Expr:
3293	case Beq2Expr: case Bneq2Expr:
3294	expr->term = term_out = new_term(NIL(vl_range), 0, -1);
3295
3296	vl_write_expr(file, expr->u.exprs.e1, vars);
3297	vl_write_expr(file, expr->u.exprs.e2, vars);
3298
3299	if (expr->u.exprs.e1->term && expr->u.exprs.e2->term) {
3300	if (expr->u.exprs.e1->term->flag & AutoDeclared &&
3301	expr->u.exprs.e2->term->flag & AutoDeclared) {
3302	char buf[MAXSTRLEN/8];
3303	vl_step_expr(stderr, expr);
3304	fprintf(stderr, "\n");
3305	sprintf(buf,
3306	"'%s': too many undefined variables for the binary operator\n",
3307	vl_currentModule->name->name);
3308	yylineno = -1;
3309	compile_error(buf);
3310	}
3311	}
3312
3313	if (!(expr->u.exprs.e1->term)) {
3314	lo = (expr->u.exprs.e2->term) ? expr->u.exprs.e2->term->lo : 0;
3315	hi = (expr->u.exprs.e2->term) ? expr->u.exprs.e2->term->hi :
3316	MAX(data_width(expr->u.exprs.e1),
3317	data_width(expr->u.exprs.e2));
3318	expr->u.exprs.e1->term = new_term(NIL(vl_range), lo, hi);
3319	if (expr->u.exprs.e2->term) {
3320	expr->u.exprs.e1->term->flag \|= expr->u.exprs.e2->term->flag;
3321	expr->u.exprs.e1->term->term_type =
3322	expr->u.exprs.e2->term->term_type;
3323	}
3324	write_var_decl(file, expr->u.exprs.e1->term);
3325	vl_write_const(file, expr->u.exprs.e1, expr->u.exprs.e1->term);
3326	}
3327	if (!(expr->u.exprs.e2->term)) {
3328	lo = (expr->u.exprs.e1->term) ? expr->u.exprs.e1->term->lo : 0;
3329	hi = (expr->u.exprs.e1->term) ? expr->u.exprs.e1->term->hi :
3330	MAX(data_width(expr->u.exprs.e2),
3331	data_width(expr->u.exprs.e1));
3332	expr->u.exprs.e2->term = new_term(NIL(vl_range), lo, hi);
3333	if (expr->u.exprs.e1->term) {
3334	expr->u.exprs.e2->term->flag \|= expr->u.exprs.e1->term->flag;
3335	expr->u.exprs.e2->term->term_type =
3336	expr->u.exprs.e1->term->term_type;
3337	}
3338	write_var_decl(file, expr->u.exprs.e2->term);
3339	vl_write_const(file, expr->u.exprs.e2, expr->u.exprs.e2->term);
3340	}
3341
3342	if ((expr->u.exprs.e1->term->term_type &&
3343	!expr->u.exprs.e2->term->term_type) \|\|
3344	(expr->u.exprs.e2->term->term_type &&
3345	!expr->u.exprs.e1->term->term_type)) {
3346	vl_expr e1, e2;
3347	vl_enumerator *enum_elt;
3348
3349	if (!expr->u.exprs.e1->term->term_type) {
3350	e1 = expr->u.exprs.e2;
3351	e2 = expr->u.exprs.e1;
3352	} else {
3353	e1 = expr->u.exprs.e1;
3354	e2 = expr->u.exprs.e2;
3355	}
3356
3357	if (e2->type != IDExpr) {
3358	char buf[MAXSTRLEN/8];
3359	sprintf(buf, "'%s':comparing symbolic var '%s' with incompatible expr '%s'",
3360	vl_currentModule->name->name,
3361	e1->term->name->name, e2->term->name->name);
3362	semantic_error(buf);
3363	}
3364
3365	if (st_lookup(e1->term->term_type->specifier->
3366	u.enum_type->domain_st,
3367	e2->u.name->name,
3368	(char**)&enum_elt)) {
3369	e2->term = typed_new_term(e1->term->term_type,
3370	e1->term->name->range,
3371	e1->term->lo, e1->term->hi);
3372	e2->term->flag = e1->term->flag;
3373	write_var_decl(file, e2->term);
3374	e2->type = IntExpr;
3375	e2->u.intval = enum_elt->val;
3376	vl_write_const(file, e2, e2->term);
3377	} else {
3378	char buf[MAXSTRLEN/8];
3379
3380	sprintf(buf, "'%s':comparing '%s' and '%s' of different domains",
3381	vl_currentModule->name->name,
3382	e1->term->name->name, e2->term->name->name);
3383	semantic_error(buf);
3384	}
3385	}
3386
3387	fprintf(file, "%s ", HSIS_COMMENT);
3388	if (!NoDetailedComment) vl_step_expr(file, expr);
3389	fprintf(file, "\n");
3390
3391	term_in1=expr->u.exprs.e1->term;
3392	term_in2=expr->u.exprs.e2->term;
3393
3394	term_in2->flag \|= (term_in1->flag & MVar);
3395
3396	if ((term_in1->flag&MVar) == (term_in2->flag&MVar)) {
3397	if (term_in1->flag & MVar) {
3398	vl_write_mv_comp(file, expr->type,
3399	term_in1, term_in2, term_out);
3400	} else {
3401	vl_write_bin_comp(file, expr->type,
3402	term_in1, term_in2, term_out);
3403	}
3404	} else if (term_in1->flag & MVar) {
3405	vl_mv_to_bin(term_in1);
3406	vl_write_bin_comp(file, expr->type,
3407	term_in1, term_in2, term_out);
3408	} else if (term_in2->flag & MVar) {
3409	vl_mv_to_bin(term_in2);
3410	vl_write_bin_comp(file, expr->type,
3411	term_in1, term_in2, term_out);
3412	}
3413
3414	vl_free_term(term_in1);
3415	vl_free_term(term_in2);
3416	break;
3417
3418	case BtimesExpr: case BdivExpr: case BremExpr:
3419	sprintf(term1, "'%s':operator '*', '/', '%%' are not supported",
3420	vl_currentModule->name->name);
3421	yylineno = -1;
3422	compile_error(term1);
3423	break;
3424	case BlshiftExpr: case BrshiftExpr:
3425	sprintf(term1, "'%s':operator '<<', '>>' are not supported",
3426	vl_currentModule->name->name);
3427	yylineno = -1;
3428	compile_error(term1);
3429	break;
3430
3431	case BlandExpr: case BlorExpr:
3432	case BltExpr: case BleExpr: case BgtExpr: case BgeExpr:
3433
3434	case BplusExpr: case BminusExpr:
3435	case BandExpr: case BorExpr: case BxorExpr: case BxnorExpr:
3436	vl_write_expr(file, expr->u.exprs.e1, vars);
3437	vl_write_expr(file, expr->u.exprs.e2, vars);
3438	if (!(expr->u.exprs.e1->term)) {
3439	lo = (expr->u.exprs.e2->term) ? expr->u.exprs.e2->term->lo : 0;
3440	hi = (expr->u.exprs.e2->term) ? expr->u.exprs.e2->term->hi :
3441	MAX(data_width(expr->u.exprs.e1)-1,
3442	data_width(expr->u.exprs.e2)-1);
3443	if (lo==0 && hi==0) hi = -1;
3444	expr->u.exprs.e1->term = new_term(NIL(vl_range), lo, hi);
3445	write_var_decl(file, expr->u.exprs.e1->term);
3446	vl_write_const(file, expr->u.exprs.e1, expr->u.exprs.e1->term);
3447	}
3448	if (!(expr->u.exprs.e2->term)) {
3449	lo = (expr->u.exprs.e1->term) ? expr->u.exprs.e1->term->lo : 0;
3450	hi = (expr->u.exprs.e1->term) ? expr->u.exprs.e1->term->hi :
3451	MAX(data_width(expr->u.exprs.e2)-1,
3452	data_width(expr->u.exprs.e1)-1);
3453	if (lo==0 && hi==0) hi = -1;
3454	expr->u.exprs.e2->term = new_term(NIL(vl_range), lo, hi);
3455	write_var_decl(file, expr->u.exprs.e2->term);
3456	vl_write_const(file, expr->u.exprs.e2, expr->u.exprs.e2->term);
3457	}
3458	vl_mv_to_bin(expr->u.exprs.e1->term);
3459	vl_mv_to_bin(expr->u.exprs.e2->term);
3460
3461	if (IS_VLR_LOG_OP(expr->type)) {
3462	if (vector_width(expr->u.exprs.e1->term->lo,
3463	expr->u.exprs.e1->term->hi) != 1) {
3464	vl_term *red_term;
3465	red_term = new_term(NIL(vl_range), 0, -1);
3466	write_red_op(file, UorExpr,
3467	expr->u.exprs.e1->term, NIL(vl_term), red_term);
3468	expr->u.exprs.e1->term = red_term;
3469	}
3470	if (vector_width(expr->u.exprs.e2->term->lo,
3471	expr->u.exprs.e2->term->hi) != 1) {
3472	vl_term *red_term;
3473	red_term = new_term(NIL(vl_range), 0, -1);
3474	write_red_op(file, UorExpr,
3475	expr->u.exprs.e2->term, NIL(vl_term), red_term);
3476	expr->u.exprs.e2->term = red_term;
3477	}
3478	}
3479	term_in1=expr->u.exprs.e1->term;
3480	term_in2=expr->u.exprs.e2->term;
3481
3482	fprintf(file, "%s ", HSIS_COMMENT);
3483	if (!NoDetailedComment) vl_step_expr(file, expr);
3484	fprintf(file, "\n");
3485
3486	expr->term = term_out = new_term(NIL(vl_range), 0, -1);
3487	if (term_in1)
3488	if (term_in1->name->unintType)
3489	expr->term->name->unintType = term_in1->name->unintType;
3490	if (term_in2)
3491	if (term_in2->name->unintType)
3492	expr->term->name->unintType = term_in2->name->unintType;
3493
3494	if (term_in1->lo > term_in1->hi) {
3495	term_out->lo = term_in2->lo;
3496	term_out->hi = term_in2->hi;
3497	} else if (term_in2->lo > term_in2->hi) {
3498	term_out->lo = term_in1->lo;
3499	term_out->hi = term_in1->hi;
3500	} else {
3501	term_out->lo = 0;
3502
3503	term_out->hi = MAX(term_in1->hi-term_in1->lo,
3504	term_in2->hi-term_in2->lo);
3505	}
3506
3507	if (expr->type == BplusExpr \|\| expr->type ==BminusExpr) {
3508	if (vector_width(lhs_lo,lhs_hi) >
3509	vector_width(term_out->lo,term_out->hi)) {
3510	if (term_out->lo > term_out->hi)
3511	term_out->hi = 1;
3512	else
3513	term_out->hi++;
3514	}
3515	} else if (expr->type == BlshiftExpr \|\| expr->type == BrshiftExpr) {
3516	if (vector_width(lhs_lo,lhs_hi) >
3517	vector_width(term_out->lo, term_out->hi)) {
3518	term_out->lo = lhs_lo;
3519	term_out->hi = lhs_hi;
3520	}
3521	}
3522
3523	bufStream = openStream();
3524	if (Use_MV_Lib)
3525	vl_write_mv_lib(bufStream,
3526	expr->type, term_in1, term_in2, term_out);
3527	else
3528	ripple = vl_write_vector_bop(bufStream, expr->type,
3529	term_in1, term_in2, term_out);
3530	write_var_decl(file, term_out);
3531	dumpStream(file, bufStream);
3532	closeStream(bufStream);
3533
3534	if (Use_MV_Lib) {
3535	if (expr->type == BplusExpr \|\| expr->type == BminusExpr) {
3536	char buf[MAXSTRLEN/8];
3537
3538	sprintf(buf, "%s%s%d%s",
3539	term_out->name->name,
3540	SEP_LBITSELECT, ++term_out->hi, SEP_RBITSELECT);
3541	vl_write_bit_connect(file, ripple, buf, 0);
3542	}
3543	}
3544
3545	vl_free_term(term_in1);
3546	vl_free_term(term_in2);
3547	break;
3548
3549	case TcondExpr:
3550	vl_write_expr(file, expr->u.exprs.e1, vars);
3551	vl_write_expr(file, expr->u.exprs.e2, vars);
3552	vl_write_expr(file, expr->u.exprs.e3, vars);
3553	if (!(expr->u.exprs.e1->term)) {
3554
3555	expr->u.exprs.e1->term = new_term(NIL(vl_range), 0, -1);
3556	vl_write_const(file, expr->u.exprs.e1, expr->u.exprs.e1->term);
3557	}
3558	if (!expr->u.exprs.e2->term && !expr->u.exprs.e3->term &&
3559	lhs_term) {
3560	lo = lhs_lo; hi = lhs_hi;
3561
3562	expr->u.exprs.e2->term = new_term(NIL(vl_range), lo, hi);
3563	expr->u.exprs.e2->term->flag = lhs_term->flag;
3564	expr->u.exprs.e2->term->term_type = lhs_term->term_type;
3565	write_var_decl(file, expr->u.exprs.e2->term);
3566	vl_write_const(file, expr->u.exprs.e2, expr->u.exprs.e2->term);
3567
3568	expr->u.exprs.e3->term = new_term(NIL(vl_range), lo, hi);
3569	expr->u.exprs.e3->term->flag = lhs_term->flag;
3570	expr->u.exprs.e3->term->term_type = lhs_term->term_type;
3571	write_var_decl(file, expr->u.exprs.e3->term);
3572	vl_write_const(file, expr->u.exprs.e3, expr->u.exprs.e3->term);
3573	}
3574	if (!(expr->u.exprs.e2->term)) {
3575	lo = (expr->u.exprs.e3->term) ? expr->u.exprs.e3->term->lo : 0;
3576	hi = (expr->u.exprs.e3->term) ? expr->u.exprs.e3->term->hi :
3577	MAX(data_width(expr->u.exprs.e2),
3578	data_width(expr->u.exprs.e3));
3579	expr->u.exprs.e2->term = new_term(NIL(vl_range), lo, hi);
3580	expr->u.exprs.e2->term->flag = expr->u.exprs.e3->term->flag;
3581	expr->u.exprs.e2->term->term_type =
3582	expr->u.exprs.e3->term->term_type;
3583	write_var_decl(file, expr->u.exprs.e2->term);
3584	vl_write_const(file, expr->u.exprs.e2, expr->u.exprs.e2->term);
3585	}
3586	if (!(expr->u.exprs.e3->term)) {
3587	lo = (expr->u.exprs.e2->term) ? expr->u.exprs.e2->term->lo : 0;
3588	hi = (expr->u.exprs.e2->term) ? expr->u.exprs.e2->term->hi :
3589	MAX(data_width(expr->u.exprs.e3),
3590	data_width(expr->u.exprs.e2));
3591	expr->u.exprs.e3->term = new_term(NIL(vl_range), lo, hi);
3592	expr->u.exprs.e3->term->flag = expr->u.exprs.e2->term->flag;
3593	expr->u.exprs.e3->term->term_type =
3594	expr->u.exprs.e2->term->term_type;
3595	write_var_decl(file, expr->u.exprs.e3->term);
3596	vl_write_const(file, expr->u.exprs.e3, expr->u.exprs.e3->term);
3597	}
3598
3599	if ((expr->u.exprs.e2->term->term_type &&
3600	!expr->u.exprs.e3->term->term_type) \|\|
3601	(expr->u.exprs.e3->term->term_type &&
3602	!expr->u.exprs.e2->term->term_type)) {
3603	vl_expr e1, e2;
3604	vl_enumerator *enum_elt;
3605
3606	if (!expr->u.exprs.e2->term->term_type) {
3607	e1 = expr->u.exprs.e3;
3608	e2 = expr->u.exprs.e2;
3609	} else {
3610	e1 = expr->u.exprs.e2;
3611	e2 = expr->u.exprs.e3;
3612	}
3613
3614	if (st_lookup(e1->term->term_type->specifier->
3615	u.enum_type->domain_st,
3616	e2->u.name->name,
3617	(char**)&enum_elt)) {
3618	e2->term = typed_new_term(e1->term->term_type,
3619	e1->term->name->range,
3620	e1->term->lo, e1->term->hi);
3621	e2->term->flag = e1->term->flag;
3622	write_var_decl(file, e2->term);
3623	e2->type = IntExpr;
3624	e2->u.intval = enum_elt->val;
3625	vl_write_const(file, e2, e2->term);
3626	} else {
3627	char buf[MAXSTRLEN/8];
3628
3629	sprintf(buf, "'%s':comparing '%s' and '%s' of different domains",
3630	vl_currentModule->name->name,
3631	e1->term->name->name, e2->term->name->name);
3632	semantic_error(buf);
3633	}
3634	}
3635
3636	if (!expr->u.exprs.e2 && !expr->u.exprs.e3) {
3637	vl_expr *e;
3638	vl_enumerator *enum_elt;
3639
3640	e = expr->u.exprs.e2;
3641	if (st_lookup(lhs_term->term_type->specifier->
3642	u.enum_type->domain_st,
3643	e->u.name->name, (char**)&enum_elt)) {
3644	e->term = typed_new_term(lhs_term->term_type,
3645	lhs_term->name->range,
3646	lhs_term->lo, lhs_term->hi);
3647	e->term->flag = lhs_term->flag;
3648	write_var_decl(file, e->term);
3649	e->type = IntExpr;
3650	e->u.intval = enum_elt->val;
3651	vl_write_const(file, e, e->term);
3652	} else {
3653	char buf[MAXSTRLEN/8];
3654
3655	sprintf(buf, "'%s':assign '%s' to '%s' of different domains",
3656	vl_currentModule->name->name,
3657	e->term->name->name, lhs_term->name->name);
3658	semantic_error(buf);
3659	}
3660
3661	e = expr->u.exprs.e3;
3662	if (st_lookup(lhs_term->term_type->specifier->
3663	u.enum_type->domain_st,
3664	e->u.name->name, (char**)&enum_elt)) {
3665	e->term = typed_new_term(lhs_term->term_type,
3666	lhs_term->name->range,
3667	lhs_term->lo, lhs_term->hi);
3668	e->term->flag = lhs_term->flag;
3669	write_var_decl(file, e->term);
3670	e->type = IntExpr;
3671	e->u.intval = enum_elt->val;
3672	vl_write_const(file, e, e->term);
3673	} else {
3674	char buf[MAXSTRLEN/8];
3675
3676	sprintf(buf, "'%s':assign '%s' to '%s' of different domains",
3677	vl_currentModule->name->name,
3678	e->term->name->name, lhs_term->name->name);
3679	semantic_error(buf);
3680	}
3681	}
3682
3683	term_in1=expr->u.exprs.e2->term;
3684	term_in2=expr->u.exprs.e3->term;
3685
3686	fprintf(file, "%s ", HSIS_COMMENT);
3687	if (!NoDetailedComment) vl_step_expr(file, expr);
3688	fprintf(file, "\n");
3689
3690	expr->term = term_out = new_term(NIL(vl_range), 0, -1);
3691	term_out->flag = term_in1->flag;
3692	term_out->term_type = term_in1->term_type;
3693
3694	if (lhs_term) {
3695	if (insideConcat) {
3696	if (vector_width(term_in1->lo, term_in1->hi) ==
3697	vector_width(term_in2->lo, term_in2->hi)) {
3698
3699
3700	term_out->lo = 0;
3701	term_out->hi = vector_width(term_in1->lo,term_in1->hi)-1;
3702	} else {
3703
3704	term_out->lo = lhs_term->lo;
3705	term_out->hi = lhs_term->hi;
3706	}
3707	} else {
3708	term_out->lo = lhs_term->lo;
3709	term_out->hi = lhs_term->hi;
3710	}
3711
3712
3713	if (vector_width(term_in1->lo, term_in1->hi) <
3714	vector_width(term_out->lo, term_out->hi)) {
3715	vl_term *tmp_term;
3716	tmp_term = new_term(NIL(vl_range), term_out->lo, term_out->hi);
3717	write_var_decl(file, tmp_term);
3718	expand_term(file, term_in1, tmp_term);
3719	vl_free_term(term_in1);
3720	term_in1 = tmp_term;
3721	} else if (vector_width(term_in1->lo, term_in1->hi) >
3722	vector_width(term_out->lo, term_out->hi)) {
3723	vl_term *tmp_term;
3724	tmp_term = new_term(NIL(vl_range), term_out->lo, term_out->hi);
3725	write_var_decl(file, tmp_term);
3726	shrink_term(file, term_in1, tmp_term);
3727	vl_free_term(term_in1);
3728	term_in1 = tmp_term;
3729	}
3730	if (vector_width(term_in2->lo, term_in2->hi) <
3731	vector_width(term_out->lo, term_out->hi)) {
3732	vl_term *tmp_term;
3733	tmp_term = new_term(NIL(vl_range), term_out->lo, term_out->hi);
3734	write_var_decl(file, tmp_term);
3735	expand_term(file, term_in2, tmp_term);
3736	vl_free_term(term_in2);
3737	term_in2 = tmp_term;
3738	} else if (vector_width(term_in2->lo, term_in2->hi) >
3739	vector_width(term_out->lo, term_out->hi)) {
3740	vl_term *tmp_term;
3741	tmp_term = new_term(NIL(vl_range), term_out->lo, term_out->hi);
3742	write_var_decl(file, tmp_term);
3743	shrink_term(file, term_in2, tmp_term);
3744	vl_free_term(term_in2);
3745	term_in2 = tmp_term;
3746	}
3747	} else {
3748	if (term_in1->lo > term_in1->hi) {
3749
3750	term_out->lo = term_in2->lo;
3751	term_out->hi = term_in2->hi;
3752	} else if (term_in2->lo > term_in2->hi) {
3753	term_out->lo = term_in1->lo;
3754	term_out->hi = term_in1->hi;
3755	} else {
3756	term_out->lo = 0;
3757	if (term_in1->hi-term_in1->lo != term_in2->hi-term_in2->lo) {
3758	char buf[MAXSTRLEN/8];
3759
3760	sprintf(buf, "'%s':different vector sizes %s %s",
3761	vl_currentModule->name->name,
3762	term_in1->name->name, term_in2->name->name);
3763	Translate_Warning(buf);
3764	}
3765	term_out->hi = MIN(term_in1->hi-term_in1->lo,
3766	term_in2->hi-term_in2->lo);
3767	}
3768	}
3769	write_var_decl(file, term_out);
3770
3771	instantiate_mux(file, term_in1, term_in2, expr->u.exprs.e1->term,
3772	term_out);
3773
3774	vl_free_term(term_in1);
3775	vl_free_term(term_in2);
3776	break;
3777
3778	case NondExpr: {
3779	vl_term nond_term=NIL(vl_term), ctrl_term=NIL(vl_term);
3780	lsList nond_list;
3781	lsGen gen;
3782	lsHandle handle;
3783	vl_expr *nexp;
3784	int i;
3785
3786	if (vars && !rst_ckt)
3787	semantic_error("don't use $ND in procedural block");
3788
3789	nond_list = lsCreate();
3790	if ((nd_check_ok == 0 && vis_nond) && !rst_ckt) {
3791	char buf[MAXSTRLEN/8];
3792	yylineno = -1;
3793	sprintf(buf, "'%s': The legal usage of $ND is continuous assignment:\n\tassign <var> = $ND(...);",
3794	vl_currentModule->name->name);
3795	compile_error(buf);
3796	}
3797	for (gen=lsStart(expr->u.expr_list), i=0;
3798	lsNext(gen, (lsGeneric*)&nexp, &handle) != LS_NOMORE; i++) {
3799	vl_write_expr(file, nexp, vars);
3800	if (nexp->type == EventExpr \|\| nexp->type == PosedgeEventExpr \|\|
3801	nexp->type == NegedgeEventExpr \|\| nexp->type == OrEventExpr) {
3802
3803	ctrl_term = NIL(vl_term);
3804	} else {
3805	lsNewEnd(nond_list, (lsGeneric)nexp, 0);
3806	}
3807	}
3808	lsFinish(gen);
3809	nond_term = vl_write_nond_wire(file, ctrl_term, nond_list,
3810	lhs_term);
3811	lsDestroy(nond_list, 0);
3812	expr->term = nond_term;
3813	if (!rst_ckt)
3814	nd_check_ok = -1;
3815	break;
3816	}
3817	}
3818
3819	if (nd_check_ok == -1 && expr->type != NondExpr && vis_nond) {
3820	char buf[MAXSTRLEN/8];
3821	yylineno = -1;
3822	sprintf(buf, "'%s': The legal usage of $ND is continuous assignment:\n\tassign <var> = $ND(...);",
3823	vl_currentModule->name->name);
3824	compile_error(buf);
3825	}
3826	if (nd_check_ok != -1)
3827	nd_check_ok = 0;
3828	}
3829
3830
3831
3832	set_t vl_write_event_expr(FILE file, vl_event_expr *event)
3833	{
3834	set_t *retval=NIL(set_t);
3835	vl_event_expr *e;
3836	lsGen gen;
3837	lsHandle handle;
3838	st_generator *stgen;
3839	vl_term *et;
3840	char *dummy;
3841	int i, j;
3842
3843	WrtTRACE("writing event_expr\n");
3844	if (event == NIL(vl_event_expr)) return retval;
3845
3846	switch(event->type) {
3847	case OrEventExpr:
3848	retval = st_init_table(ptrcmp, ptrhash);
3849	gen = lsStart(event->list);
3850	while (lsNext(gen, (lsGeneric*)&e, &handle) != LS_NOMORE) {
3851	vl_write_event_expr(file, e);
3852	st_insert(retval, (char*)edge_triggering, 0);
3853	}
3854	lsFinish(gen);
3855
3856	assert(st_count(retval) == lsLength(event->list));
3857	edge_triggering = new_term(NIL(vl_range), 0, -1);
3858	fprintf(file, ".names ");
3859	stgen = st_init_gen(retval);
3860	while (st_gen(stgen, (char**)&et, &dummy)) {
3861	fprintf(file, "%s ", et->name->name);
3862	}
3863	st_free_gen(stgen);
3864	fprintf(file, "%s\n%s 0\n",
3865	edge_triggering->name->name, HSIS_DEFAULT);
3866	for (i=0; i<st_count(retval); i++) {
3867	for (j=0; j<i; j++) fprintf(file, "- ");
3868	j++; fprintf(file, "1 ");
3869	for (; j<st_count(retval); j++) fprintf(file, "- ");
3870	fprintf(file, "1\n");
3871	}
3872	retval = NIL(set_t);
3873
3874
3875	break;
3876	case NegedgeEventExpr:
3877	edge_triggering = write_edge_detector(file, event->expr, -1);
3878	break;
3879	case PosedgeEventExpr:
3880	edge_triggering = write_edge_detector(file, event->expr, 1);
3881	break;
3882	case EdgeEventExpr:
3883	break;
3884	case EventExpr:
3885
3886	edge_triggering = write_edge_detector(file, event->expr, 0);
3887	break;
3888	default:
3889	internal_error("Unexpected EventExpr Type");
3890	break;
3891	}
3892
3893	return retval;
3894	}
3895
3896
3897
3898	int vl_eval_expr(vl_expr *expr)
3899	{
3900	int i, val;
3901	int min, typ, max;
3902	double minf=0, typf=0, maxf=0;
3903	int aux1_flag, aux2_flag, aux3_flag;
3904
3905	if (!expr) return 0;
3906	switch (expr->type) {
3907	case BitExpr: return expr->u.bexpr.part1;
3908	case IntExpr: return expr->u.intval;
3909	case RealExpr:
3910	vl_expr_aux1_val = expr->u.realval;
3911	vl_expr_aux1_flag = 1;
3912	return (int)expr->u.realval;
3913	case IDExpr: {
3914	vl_id_range *id_sym;
3915	int cant_evaluate=0;
3916	int cant_find=0;
3917
3918	if (vl_currentPrimitive)
3919	cant_evaluate = 1;
3920	if (!vl_currentModule->param_st)
3921	cant_evaluate = 1;
3922	if (!cant_evaluate)
3923	if (!st_lookup(vl_currentModule->param_st, expr->u.name->name,
3924	(char**)&id_sym))
3925	cant_find = 1;
3926	if (vl_encloseModule && !cant_evaluate)
3927	if (cant_find)
3928	if (st_lookup(vl_encloseModule->param_st, expr->u.name->name,
3929	(char**)&id_sym))
3930	cant_find=0;
3931	if (cant_evaluate \|\| cant_find) {
3932	char buf[MAXSTRLEN];
3933	sprintf(buf, "%s:eval_expr:need constant instead of variable %s",
3934	vl_currentModule->name->name,
3935	expr->u.name->name);
3936	yylineno = -1;
3937	if (silent_err) {
3938	Vlerrno = 1;
3939	return 0;
3940	} else
3941	compile_error(buf);
3942	}
3943
3944	return (int)(id_sym->mpg_master_exp);
3945	}
3946	case BitSelExpr: case PartSelExpr:
3947	if (!silent_err) {
3948	vl_step_expr(stderr, expr);
3949	yylineno = -1;
3950	compile_error("need constant instead of variable");
3951	} else {
3952	Vlerrno = 1;
3953	return 0;
3954	}
3955	case ConcatExpr: {
3956	int i, rep=1;
3957	int acc=0, val, width;
3958	lsGen gen;
3959	lsHandle handle;
3960	vl_expr *e;
3961	if (expr->u.exprs.e2) {
3962	rep = vl_eval_expr(expr->u.exprs.e2);
3963	}
3964	for (i=0; i<rep; i++) {
3965	for (gen=lsStart((lsList)(expr->u.exprs.e1));
3966	lsNext(gen, (lsGeneric*)&e, &handle) != LS_NOMORE;) {
3967	if (e->type != BitExpr) width_unknown();
3968	val = vl_eval_expr(e);
3969	width = strlen((char*)e->u.exprs.e3);
3970	acc = (acc << width) \| val;
3971	}
3972	lsFinish(gen);
3973	}
3974
3975	return acc;
3976	}
3977
3978	case MinTypMaxExpr:
3979	aux1_flag = aux2_flag = aux3_flag = 0;
3980	min = vl_eval_expr(expr->u.exprs.e1);
3981	aux1_flag=1;
3982	if (vl_expr_aux1_val) minf=vl_expr_aux1_val;
3983	else minf = min;
3984	if (expr->u.exprs.e2) {
3985	typ = vl_eval_expr(expr->u.exprs.e2);
3986	aux2_flag=1;
3987	if (vl_expr_aux1_val) typf=vl_expr_aux1_val;
3988	else typf = typ;
3989	}
3990	if (expr->u.exprs.e3) {
3991	max = vl_eval_expr(expr->u.exprs.e2);
3992	aux3_flag=1;
3993	if (vl_expr_aux1_val) maxf=vl_expr_aux1_val;
3994	else maxf = max;
3995	}
3996	if (!vl_expr_aux3_flag) {
3997	aux3_flag = aux2_flag;
3998	aux2_flag = 0;
3999	max = typ; maxf = typf;
4000	typ = 0; typf = (double)0;
4001	}
4002	vl_expr_aux1_flag = aux1_flag;
4003	vl_expr_aux2_flag = aux2_flag;
4004	vl_expr_aux3_flag = aux3_flag;
4005	vl_expr_aux1_val = minf;
4006	vl_expr_aux2_val = typf;
4007	vl_expr_aux3_val = maxf;
4008	return min;
4009	case StringExpr: break;
4010	case FuncExpr:
4011	case UplusExpr: return vl_eval_expr(expr->u.exprs.e1);
4012	case UminusExpr: return -vl_eval_expr(expr->u.exprs.e1);
4013	case UnotExpr: return !vl_eval_expr(expr->u.exprs.e1);
4014	case UcomplExpr: return ~vl_eval_expr(expr->u.exprs.e1);
4015
4016	case UnandExpr: case UandExpr:
4017	case UnorExpr: case UorExpr:
4018	case UxnorExpr: case UxorExpr:
4019	Translate_Warning("reduction on constant");
4020	for (i=0, val = vl_eval_expr(expr->u.exprs.e1); i<MAXBITNUM-2; i++) {
4021	switch (expr->type) {
4022	case UnandExpr: case UandExpr:
4023	val = (val & 1) & (val >> 1); break;
4024	case UnorExpr: case UorExpr:
4025	val = (val & 1) \| (val >> 1); break;
4026	case UxnorExpr: case UxorExpr:
4027	val = (val & 1) ^ (val >> 1); break;
4028	}
4029	val >>= 1;
4030	}
4031	if (expr->type == UnandExpr \|\|
4032	expr->type == UnorExpr \|\|
4033	expr->type == UxnorExpr)
4034	val = !val;
4035
4036	case BtimesExpr:
4037	return vl_eval_expr(expr->u.exprs.e1) * vl_eval_expr(expr->u.exprs.e2);
4038	case BdivExpr:
4039	return vl_eval_expr(expr->u.exprs.e1) / vl_eval_expr(expr->u.exprs.e2);
4040	case BremExpr:
4041	return vl_eval_expr(expr->u.exprs.e1) % vl_eval_expr(expr->u.exprs.e2);
4042	case BlshiftExpr:
4043	return vl_eval_expr(expr->u.exprs.e1) << vl_eval_expr(expr->u.exprs.e2);
4044	case BrshiftExpr:
4045	return vl_eval_expr(expr->u.exprs.e1) >> vl_eval_expr(expr->u.exprs.e2);
4046
4047
4048
4049	case Beq3Expr:
4050	return vl_eval_expr(expr->u.exprs.e1) == vl_eval_expr(expr->u.exprs.e2);
4051	case Bneq3Expr:
4052	return vl_eval_expr(expr->u.exprs.e1) != vl_eval_expr(expr->u.exprs.e2);
4053	case Beq2Expr:
4054	return vl_eval_expr(expr->u.exprs.e1) == vl_eval_expr(expr->u.exprs.e2);
4055	case Bneq2Expr:
4056	return vl_eval_expr(expr->u.exprs.e1) != vl_eval_expr(expr->u.exprs.e2);
4057
4058	case BlandExpr:
4059	return vl_eval_expr(expr->u.exprs.e1) && vl_eval_expr(expr->u.exprs.e2);
4060	case BlorExpr:
4061	return vl_eval_expr(expr->u.exprs.e1) \|\| vl_eval_expr(expr->u.exprs.e2);
4062	case BltExpr:
4063	return vl_eval_expr(expr->u.exprs.e1) < vl_eval_expr(expr->u.exprs.e2);
4064	case BleExpr:
4065	return vl_eval_expr(expr->u.exprs.e1) <= vl_eval_expr(expr->u.exprs.e2);
4066	case BgtExpr:
4067	return vl_eval_expr(expr->u.exprs.e1) > vl_eval_expr(expr->u.exprs.e2);
4068	case BgeExpr:
4069	return vl_eval_expr(expr->u.exprs.e1) >= vl_eval_expr(expr->u.exprs.e2);
4070	case BplusExpr:
4071	return vl_eval_expr(expr->u.exprs.e1) + vl_eval_expr(expr->u.exprs.e2);
4072	case BminusExpr:
4073	return vl_eval_expr(expr->u.exprs.e1) - vl_eval_expr(expr->u.exprs.e2);
4074	case BandExpr:
4075	return vl_eval_expr(expr->u.exprs.e1) & vl_eval_expr(expr->u.exprs.e2);
4076	case BorExpr:
4077	return vl_eval_expr(expr->u.exprs.e1) \| vl_eval_expr(expr->u.exprs.e2);
4078	case BxorExpr:
4079	return vl_eval_expr(expr->u.exprs.e1) ^ vl_eval_expr(expr->u.exprs.e2);
4080	case BxnorExpr:
4081	return ~(vl_eval_expr(expr->u.exprs.e1) ^vl_eval_expr(expr->u.exprs.e2));
4082
4083	case TcondExpr:
4084	return (vl_eval_expr(expr->u.exprs.e1)) ?
4085	vl_eval_expr(expr->u.exprs.e2) : vl_eval_expr(expr->u.exprs.e3);
4086	}
4087
4088	return 0;
4089	}
4090
4091
4092	st_table create_var_muxes(FILE file, vl_term sel, st_table t_vars, st_table f_vars, st_table vars)
4093	{
4094	int lo=0, hi=0;
4095	var_info *cur_var;
4096	st_generator *gen;
4097	var_info t_in, f_in;
4098	char *key, buf[MAXSTRLEN];
4099	vl_term *term_out;
4100
4101
4102	gen = st_init_gen(t_vars);
4103	while (st_gen(gen, &key, (char**)&t_in)) {
4104
4105	if (strstr(key,SEP_LATCH)) continue;
4106	if (strstr(key,SEP_QUASI)) continue;
4107
4108	sprintf(buf, "%s%s%s%s%s%s",
4109	t_in->id->name, SEP_GATEPIN, descape(sel->name->name,'\\','_'),
4110	SEP_GATEPIN, PIN_RAWOUT, new_termname());
4111	if (st_lookup(f_vars, key, (char**)&f_in)) {
4112	if (st_lookup(vars, key, (char**)&cur_var)) {
4113	int t_in_cur_var, f_in_cur_var;
4114
4115	t_in_cur_var = !strcmp(t_in->current_terminal->name->name,
4116	cur_var->current_terminal->name->name);
4117	f_in_cur_var = !strcmp(f_in->current_terminal->name->name,
4118	cur_var->current_terminal->name->name);
4119
4120
4121	if ( t_in_cur_var && f_in_cur_var)
4122	continue;
4123
4124
4125	if ((strstr(t_in->current_terminal->name->name, SEP_GATEPIN) \|\|
4126	strstr(f_in->current_terminal->name->name, SEP_GATEPIN)) &&
4127	!(t_in->current_terminal->hi == -1 \|\|
4128	f_in->current_terminal->hi == -1) &&
4129	(t_in->current_terminal->hi!=f_in->current_terminal->hi \|\|
4130	t_in->current_terminal->lo!=f_in->current_terminal->lo)) {
4131	if (t_in->current_terminal->hi !=
4132	f_in->current_terminal->hi \|\|
4133	t_in->current_terminal->lo !=
4134	f_in->current_terminal->lo) {
4135	int i, t_need_extend, f_need_extend;
4136	char in_buf[MAXSTRLEN], out_buf[MAXSTRLEN];
4137	vl_term *t_new_term=NIL(vl_term),
4138	*f_new_term=NIL(vl_term);
4139
4140	hi = MAX(t_in->current_terminal->hi,f_in->current_terminal->hi);
4141	lo = MIN(t_in->current_terminal->lo,f_in->current_terminal->lo);
4142	t_need_extend = (hi > t_in->current_terminal->hi \|\|
4143	lo < t_in->current_terminal->lo);
4144	f_need_extend = (hi > f_in->current_terminal->hi \|\|
4145	lo < f_in->current_terminal->lo);
4146	if (t_need_extend) {
4147	t_new_term =
4148	typed_new_term(t_in->current_terminal->term_type,
4149	t_in->id->range, lo, hi);
4150	write_var_decl(file, t_new_term);
4151	}
4152	if (f_need_extend) {
4153	f_new_term =
4154	typed_new_term(f_in->current_terminal->term_type,
4155	f_in->id->range, lo, hi);
4156	write_var_decl(file, f_new_term);
4157	}
4158	for (i=lo; i<=hi; i++) {
4159	if (t_need_extend) {
4160	if (i < t_in->current_terminal->lo \|\|
4161	i > t_in->current_terminal->hi) {
4162	var_info *curr_var_info;
4163
4164	st_lookup(vars, t_in->id->name,
4165	(char**)&curr_var_info);
4166	if (i >=
4167	curr_var_info->current_terminal->lo &&
4168	i <=
4169	curr_var_info->current_terminal->hi) {
4170	sprintf(in_buf, "%s%s%d%s",
4171	curr_var_info->
4172	current_terminal->name->name,
4173	SEP_LBITSELECT,
4174	i,
4175	SEP_RBITSELECT);
4176
4177	} else {
4178	sprintf(in_buf, "%s%s%d%s",
4179	t_in->id->name,
4180	SEP_LBITSELECT,
4181	i,
4182	SEP_RBITSELECT);
4183	}
4184	} else {
4185	sprintf(in_buf, "%s%s%d%s",
4186	t_in->current_terminal->name->name,
4187	SEP_LBITSELECT, i, SEP_RBITSELECT);
4188	}
4189	sprintf(out_buf, "%s%s%d%s",
4190	t_new_term->name->name,
4191	SEP_LBITSELECT, i, SEP_RBITSELECT);
4192	vl_write_bit_connect(file, in_buf, out_buf, 0);
4193	}
4194	if (f_need_extend) {
4195	if (i < f_in->current_terminal->lo \|\|
4196	i > f_in->current_terminal->hi) {
4197	var_info *curr_var_info;
4198
4199	st_lookup(vars, t_in->id->name,
4200	(char**)&curr_var_info);
4201	if (i >=
4202	curr_var_info->current_terminal->lo &&
4203	i <=
4204	curr_var_info->current_terminal->hi) {
4205	sprintf(in_buf, "%s%s%d%s",
4206	curr_var_info->
4207	current_terminal->name->name,
4208	SEP_LBITSELECT,
4209	i,
4210	SEP_RBITSELECT);
4211	} else {
4212	sprintf(in_buf, "%s%s%d%s",
4213	f_in->id->name,
4214	SEP_LBITSELECT,
4215	i,
4216	SEP_RBITSELECT);
4217	}
4218	} else {
4219	sprintf(in_buf, "%s%s%d%s",
4220	f_in->current_terminal->name->name,
4221	SEP_LBITSELECT, i, SEP_RBITSELECT);
4222	}
4223	sprintf(out_buf, "%s%s%d%s",
4224	f_new_term->name->name,
4225	SEP_LBITSELECT, i, SEP_RBITSELECT);
4226	vl_write_bit_connect(file, in_buf, out_buf, 0);
4227	}
4228	}
4229	if (t_need_extend)
4230	t_in->current_terminal = t_new_term;
4231	if (f_need_extend)
4232	f_in->current_terminal = f_new_term;
4233	}
4234	} else {
4235	if (t_in->current_terminal->hi-t_in->current_terminal->lo>=
4236	f_in->current_terminal->hi-f_in->current_terminal->lo){
4237	lo = t_in->current_terminal->lo;
4238	hi = t_in->current_terminal->hi;
4239	} else {
4240	lo = f_in->current_terminal->lo;
4241	hi = f_in->current_terminal->hi;
4242	}
4243	}
4244	term_out = create_rename_term(t_in->id, buf, lo, hi);
4245	term_out->flag = t_in->current_terminal->flag;
4246
4247	write_var_decl(file, term_out);
4248	instantiate_mux(file,
4249	t_in->current_terminal,
4250	f_in->current_terminal,
4251	sel, term_out);
4252	cur_var->current_terminal = term_out;
4253
4254
4255	if (!t_in_cur_var && !f_in_cur_var) {
4256	continue;
4257	}
4258
4259
4260	if (!t_in_cur_var && f_in_cur_var) {
4261	continue;
4262	}
4263
4264
4265	if (t_in_cur_var && !f_in_cur_var) {
4266	continue;
4267	}
4268	}
4269	}
4270	}
4271	st_free_gen(gen);
4272
4273	gen = st_init_gen(t_vars);
4274	while (st_gen(gen, &key, (char**)&t_in)) {
4275
4276	if (strstr(key,SEP_LATCH)) continue;
4277	if (strstr(key,SEP_QUASI)) continue;
4278
4279	sprintf(buf, "%s%s%s%s%s%s",
4280	t_in->id->name, SEP_GATEPIN, descape(sel->name->name,'\\','_'),
4281	SEP_GATEPIN, PIN_RAWOUT, new_termname());
4282	if (st_lookup(f_vars, key, (char**)&f_in)) {
4283	if (!st_lookup(vars, key, (char**)&cur_var)) {
4284
4285	if (t_in->current_terminal->hi-t_in->current_terminal->lo >=
4286	f_in->current_terminal->hi-f_in->current_terminal->lo) {
4287	lo = t_in->current_terminal->lo;
4288	hi = t_in->current_terminal->hi;
4289	} else {
4290	lo = f_in->current_terminal->lo;
4291	hi = f_in->current_terminal->hi;
4292	}
4293	term_out = create_rename_term(t_in->id, buf, lo, hi);
4294	term_out->flag \|= t_in->current_terminal->flag;
4295	write_var_decl(file, term_out);
4296	instantiate_mux(file, t_in->current_terminal,
4297	f_in->current_terminal,
4298	sel, term_out);
4299
4300
4301	assert(!st_lookup(vars,key,(char**)&cur_var));
4302	st_insert(vars, key,
4303	(char*)create_var_info(vl_copy_id_range(t_in->id),
4304	term_out));
4305
4306
4307	}
4308	}
4309	}
4310	st_free_gen(gen);
4311
4312
4313
4314	gen = st_init_gen(t_vars);
4315	while (st_gen(gen, &key, (char**)&t_in)) {
4316
4317	if (strstr(key,SEP_LATCH)) continue;
4318	if (strstr(key,SEP_QUASI)) continue;
4319
4320	sprintf(buf, "%s%s%s%s%s%s",
4321	t_in->id->name, SEP_GATEPIN, descape(sel->name->name,'\\','_'),
4322	SEP_GATEPIN, PIN_RAWOUT, new_termname());
4323	if (!st_lookup(f_vars, key, (char**)&f_in)) {
4324	vl_term *orig_id;
4325	char *dummy;
4326
4327
4328	term_out = create_rename_term(t_in->id, buf,
4329	t_in->current_terminal->lo,
4330	t_in->current_terminal->hi);
4331	term_out->flag \|= t_in->current_terminal->flag;
4332	orig_id =
4333	vl_create_term(((t_in->id->flags & EventVar) && smartEvent)?
4334	vl_create_id_range(WRT_BLIF_GND(file),
4335	NIL(vl_range)) :
4336	vl_copy_id_range(t_in->id),
4337	t_in->current_terminal->lo,
4338	t_in->current_terminal->hi);
4339	if (vl_currentModule->combVar_st)
4340	if (st_lookup(vl_currentModule->combVar_st,
4341	orig_id->name->name, &dummy)) {
4342	vl_free_term(orig_id);
4343	orig_id = true_term(file);
4344	}
4345	if (vl_currentFunction) {
4346	vl_free_term(orig_id);
4347	orig_id = true_term(file);
4348	}
4349	orig_id->flag = t_in->current_terminal->flag;
4350	write_var_decl(file, term_out);
4351	if (rst_ckt) {
4352	instantiate_mux(file, t_in->current_terminal,
4353	t_in->current_terminal,
4354	sel, term_out);
4355	} else {
4356	instantiate_mux(file, t_in->current_terminal, orig_id,
4357	sel, term_out);
4358	}
4359	vl_free_term(orig_id);
4360
4361	st_insert(vars, key,
4362	(char*)create_var_info(vl_copy_id_range(t_in->id),
4363	term_out));
4364	}
4365	}
4366	st_free_gen(gen);
4367
4368
4369
4370	gen = st_init_gen(f_vars);
4371	while (st_gen(gen, &key, (char**)&f_in)) {
4372
4373	if (strstr(key,SEP_LATCH)) continue;
4374	if (strstr(key,SEP_QUASI)) continue;
4375
4376	sprintf(buf, "%s%s%s%s%s%s",
4377	f_in->id->name, SEP_GATEPIN, descape(sel->name->name,'\\','_'),
4378	SEP_GATEPIN, PIN_RAWOUT, new_termname());
4379	if (!st_lookup(t_vars, key, (char**)&t_in)) {
4380	vl_term *orig_id;
4381
4382
4383	term_out = create_rename_term(f_in->id, buf,
4384	f_in->current_terminal->lo,
4385	f_in->current_terminal->hi);
4386	term_out->flag \|= f_in->current_terminal->flag;
4387	orig_id =
4388	vl_create_term(((f_in->id->flags & EventVar) && smartEvent)?
4389	vl_create_id_range(WRT_BLIF_GND(file),
4390	NIL(vl_range)) :
4391	vl_copy_id_range(f_in->id),
4392	f_in->current_terminal->lo,
4393	f_in->current_terminal->hi);
4394	orig_id->flag = f_in->current_terminal->flag;
4395
4396	write_var_decl(file, term_out);
4397	if (rst_ckt) {
4398	instantiate_mux(file, f_in->current_terminal,
4399	f_in->current_terminal,
4400	sel, term_out);
4401	} else {
4402	instantiate_mux(file, orig_id, f_in->current_terminal,
4403	sel, term_out);
4404	}
4405	vl_free_term(orig_id);
4406
4407	st_insert(vars, key,
4408	(char*)create_var_info(vl_copy_id_range(f_in->id),
4409	term_out));
4410	}
4411	}
4412	st_free_gen(gen);
4413
4414	return vars;
4415	}
4416
4417
4418	vl_term write_case_comparator(FILE file, vl_term selector, lsList tags, st_table vars)
4419	{
4420	int j;
4421	vl_expr *expr;
4422	lsHandle handle;
4423	lsGen gen;
4424	vl_term *term_out;
4425	vl_term *comp_result;
4426	char buf[MAXSTRLEN];
4427
4428	if (!tags) return NIL(vl_term);
4429
4430	buf[0] = '\0';
4431	term_out = new_term(NIL(vl_range), 0, -1);
4432
4433	for (gen = lsStart(tags);
4434	lsNext(gen, (lsGeneric*)&expr, &handle) != LS_NOMORE; ) {
4435	comp_result = new_term(NIL(vl_range), 0, -1);
4436
4437	write_case_tag_const(file, selector, expr, vars);
4438
4439	write_comparator(file, selector, expr->term, comp_result);
4440	strcat(buf, comp_result->name->name);
4441	strcat(buf, " ");
4442	vl_free_term(comp_result);
4443	comp_result = NIL(vl_term);
4444	vl_free_term(expr->term);
4445	expr->term = NIL(vl_term);
4446	}
4447	(void)lsFinish(gen);
4448
4449	fprintf(file, ".names %s %s\n", buf, term_out->name->name);
4450
4451	fprintf(file, ".def 1\n");
4452	for (j=0; j<lsLength(tags); j++) {
4453	fprintf(file, "0 ");
4454	}
4455	fprintf(file, "0\n");
4456
4457	return term_out;
4458	}
4459
4460	char vl_write_vector_bop(FILE file, short type, vl_term in1, vl_term in2, vl_term *out)
4461	{
4462	char *ripple = NIL(char);
4463
4464	if (ISREDUCTION(type)) {
4465	ripple = write_red_op(file, type, in1, in2, out);
4466	} else if (IS_VLR_REL_OP(type)) {
4467	ripple = write_rel_vector_bop(file, type, in1, in2, out);
4468	} else {
4469	ripple = write_op_vector_bop(file, type, in1, in2, out);
4470	}
4471
4472	return ripple;
4473	}
4474
4475
4476	#define BLIF_BITCONNECT 0
4477	#define BLIF_NOT 1
4478	#define BLIF_AND 2
4479	#define BLIF_NAND 3
4480	#define BLIF_OR 4
4481	#define BLIF_NOR 5
4482	#define BLIF_XOR 6
4483	#define BLIF_XNOR 7
4484	#define BLIF_ADD 8
4485	#define BLIF_SUB 10
4486	#define BLIF_MUX 12
4487
4488	#define EXPR_TO_BLIF_FUNC(exprval) \
4489	((exprval)==BlandExpr)? BLIF_AND : \
4490	((exprval)==BlorExpr) ? BLIF_OR : \
4491	((exprval)==BandExpr) ? BLIF_AND : \
4492	((exprval)==BorExpr) ? BLIF_OR : \
4493	((exprval)==BxorExpr) ? BLIF_XOR : \
4494	((exprval)==BxnorExpr)? BLIF_XNOR: \
4495	((exprval)==BplusExpr)? BLIF_ADD : \
4496	((exprval)==BminusExpr)?BLIF_SUB : \
4497	((exprval)==BltExpr) ? BLIF_SUB : \
4498	((exprval)==BleExpr) ? BLIF_SUB : \
4499	((exprval)==BgtExpr) ? BLIF_SUB : \
4500	((exprval)==BgeExpr) ? BLIF_SUB : \
4501	((exprval)==UandExpr) ? BLIF_AND : \
4502	((exprval)==UnandExpr)? BLIF_NAND: \
4503	((exprval)==UorExpr) ? BLIF_OR : \
4504	((exprval)==UnorExpr) ? BLIF_NOR : \
4505	((exprval)==UxorExpr) ? BLIF_XOR : 0
4506
4507	#define EXPR_TO_SMV_FUNC(exprval) \
4508	((exprval)==BlandExpr)? SMV_AND : \
4509	((exprval)==BlorExpr) ? SMV_OR : \
4510	((exprval)==BandExpr) ? SMV_AND : \
4511	((exprval)==BorExpr) ? SMV_OR : \
4512	((exprval)==BxnorExpr)? SMV_EQUIV:\
4513	((exprval)==BxorExpr) ? SMV_EQUIV: "???"
4514
4515	static char *log_function[] = {
4516	"0 0 \n1 1 \n",
4517	"0 1 \n1 0 \n",
4518	"0 0 0\n0 1 0\n1 0 0\n1 1 1\n",
4519	"0 0 1\n0 1 1\n1 0 1\n1 1 0\n",
4520	"0 0 0\n0 1 1\n1 0 1\n1 1 1\n",
4521	"0 0 1\n0 1 0\n1 0 0\n1 1 0\n",
4522	"0 0 0\n0 1 1\n1 0 1\n1 1 0\n",
4523	"0 0 1\n0 1 0\n1 0 0\n1 1 1\n",
4524	"0 0 0 0\n0 0 1 1\n0 1 0 1\n0 1 1 0\n1 0 0 1\n1 0 1 0\n1 1 0 0\n1 1 1 1\n",
4525	"0 0 0 0\n0 0 1 0\n0 1 0 0\n0 1 1 1\n1 0 0 0\n1 0 1 1\n1 1 0 1\n1 1 1 1\n",
4526	"0 0 0 0\n0 0 1 1\n0 1 0 1\n0 1 1 0\n1 0 0 1\n1 0 1 0\n1 1 0 0\n1 1 1 1\n",
4527	"0 0 0 0\n0 0 1 1\n0 1 0 1\n0 1 1 1\n1 0 0 0\n1 0 1 0\n1 1 0 0\n1 1 1 1\n",
4528	"0 - 0 0\n1 - 0 1\n- 0 1 0\n- 1 1 1\n"
4529	};
4530
4531	static char *set_log_function[] = {
4532	"0 0 \n1 1 \n",
4533	"0 1 \n1 0 \n",
4534	".def 0\n1 1 1\n",
4535	".def 1\n1 1 0\n",
4536	".def 1\n0 0 0\n",
4537	".def 0\n0 0 1\n",
4538	".def 0\n0 1 1\n1 0 1\n",
4539	".def 1\n0 1 0\n1 0 0\n",
4540	".def 0\n0 0 1 1\n0 1 0 1\n1 0 0 1\n1 1 1 1\n",
4541	".def 0\n- 1 1 1\n1 - 1 1\n1 1 - 1\n",
4542	".def 0\n0 0 1 1\n0 1 0 1\n1 0 0 1\n1 1 1 1\n",
4543	".def 0\n0 - 1 1\n0 1 - 1\n- 1 1 1\n",
4544	"0 - 0 0\n1 - 0 1\n- 0 1 0\n- 1 1 1\n"
4545	};
4546
4547
4548	char vl_write_bop(FILE file, short type, char in1, char in2, char auxin, char out, int forbidden_ripple)
4549	{
4550	int mv_func;
4551	char sbuf[MAXSTRLEN];
4552	static char ripplenet[MAXSTRLEN];
4553	char **func;
4554
4555	func = (set_notation)?set_log_function:log_function;
4556	switch(type) {
4557	case BlandExpr: case BlorExpr:
4558	case BandExpr: case BorExpr: case BxorExpr: case BxnorExpr:
4559	mv_func = EXPR_TO_BLIF_FUNC(type);
4560	fprintf(file, ".names %s %s %s\n", in1, in2, out);
4561	fprintf(file, "%s", func[mv_func]);
4562	sprintf(sbuf, "%s", out);
4563	break;
4564	case UnotExpr: type = UorExpr;
4565
4566	case UandExpr: case UnandExpr:
4567	case UorExpr: case UnorExpr:
4568	case UxorExpr: case UxnorExpr:
4569	sprintf(sbuf, "%s", new_termname());
4570	mv_func = EXPR_TO_BLIF_FUNC(type);
4571	fprintf(file, ".names %s %s %s\n", in1, in2, sbuf);
4572	fprintf(file, "%s", func[mv_func]);
4573	sprintf(ripplenet, "%s", sbuf);
4574	break;
4575	case BplusExpr: case BminusExpr:
4576	case BltExpr: case BleExpr: case BgtExpr: case BgeExpr:
4577	mv_func = EXPR_TO_BLIF_FUNC(type);
4578	fprintf(file, ".names %s %s %s %s\n",
4579	in1, in2,
4580	(auxin)?auxin:WRT_BLIF_GND(file), (out)?out:new_termname());
4581	fprintf(file, "%s", func[mv_func]);
4582	if (!forbidden_ripple) {
4583	sprintf(sbuf, "%s", new_termname());
4584	fprintf(file, "%s carry/borrow\n", HSIS_COMMENT);
4585	fprintf(file, ".names %s %s %s %s\n",
4586	in1, in2, (auxin)?auxin:WRT_BLIF_GND(file), sbuf);
4587	fprintf(file, "%s", func[mv_func+1]);
4588	sprintf(ripplenet, "%s", sbuf);
4589	}
4590	break;
4591	}
4592
4593	return ripplenet;
4594	}
4595
4596
4597	static void vl_write_vector_red_op(FILE *file, short type,
4598	vl_term *in, int inverted,
4599	vl_term *out)
4600	{
4601	int i;
4602	char rip_buf[MAXSTRLEN], in1[MAXSTRLEN], in2[MAXSTRLEN];
4603
4604	if (in->lo == in->hi) {
4605	if (out->lo > out->hi) {
4606	sprintf(in1, "%s%s%d%s", in->name->name,
4607	SEP_LBITSELECT, in->lo, SEP_RBITSELECT);
4608	sprintf(in2, "%s", out->name->name);
4609	vl_write_bit_connect(file, in1, in2, inverted);
4610	return;
4611	} else {
4612	sprintf(in1, "%s%s%d%s", in->name->name,
4613	SEP_LBITSELECT, in->lo, SEP_RBITSELECT);
4614	sprintf(in2, "%s%s%d%s", out->name->name,
4615	SEP_LBITSELECT, in->lo, SEP_RBITSELECT);
4616	vl_write_bit_connect(file, in1, in2, inverted);
4617	return;
4618	}
4619	}
4620
4621	sprintf(rip_buf, "%s", new_termname());
4622	sprintf(in1, "%s%s%d%s", in->name->name,
4623	SEP_LBITSELECT, in->lo, SEP_RBITSELECT);
4624	sprintf(in2, "%s%s%d%s", in->name->name,
4625	SEP_LBITSELECT, in->lo+1, SEP_RBITSELECT);
4626	strcpy(rip_buf,
4627	vl_write_bop(file, type, in1, in2, NIL(char), NIL(char), 1));
4628
4629	for (i=in->lo+2; i<=in->hi; i++) {
4630	strcpy(in1, rip_buf);
4631	sprintf(in2, "%s%s%d%s", in->name->name,
4632	SEP_LBITSELECT, i, SEP_RBITSELECT);
4633	strcpy(rip_buf,
4634	vl_write_bop(file, type, in1, in2, NIL(char), NIL(char), 1));
4635	}
4636
4637	vl_write_bit_connect(file, rip_buf, out->name->name, inverted);
4638	}
4639
4640
4641
4642	void vl_write_bit_connect(FILE file, char in, char *out, int inverted)
4643	{
4644	char **func;
4645
4646	func = (set_notation)?set_log_function:log_function;
4647	fprintf(file, ".names %s %s\n", in, out);
4648
4649	if (set_notation) {
4650	if (!inverted)
4651	fprintf(file, "- %s%s\n", HSIS_EQUAL, in);
4652	else
4653	fprintf(file, "%s", func[BLIF_NOT]);
4654	} else {
4655	if (!inverted)
4656	fprintf(file, "%s", func[BLIF_BITCONNECT]);
4657	else
4658	fprintf(file, "%s", func[BLIF_NOT]);
4659	}
4660	}
4661
4662	void write_comparator(FILE file, vl_term in1, vl_term in2, vl_term out)
4663	{
4664	if ((in1->flag&MVar) == (in2->flag&MVar)) {
4665	if (in1->flag & MVar) {
4666	vl_write_mv_comp(file, (short)Beq2Expr, in1, in2, out);
4667	} else {
4668	vl_write_bin_comp(file, (short)Beq2Expr, in1, in2, out);
4669	}
4670	} else if (in1->flag & MVar) {
4671	vl_mv_to_bin(in1);
4672	vl_write_bin_comp(file, (short)Beq2Expr, in1, in2, out);
4673	} else if (in1->flag & MVar) {
4674	vl_mv_to_bin(in2);
4675	vl_write_bin_comp(file, (short)Beq2Expr, in1, in2, out);
4676	}
4677	}
4678
4679
4680	vl_term instantiate_function(FILE file, vl_function master, lsList args, st_table vars)
4681	{
4682	vl_port_connect *i_port;
4683	vl_term *retval;
4684	int hi, lo, temp;
4685	int constConnection;
4686	lsGen mast_gen, inst_gen, gen;
4687	lsHandle mast_handle, inst_handle, handle;
4688	vl_id_range *m;
4689	vl_expr *i;
4690	const_term *ct;
4691	vl_enumerator *enum_elt;
4692	lsList input_consts;
4693
4694	i_port = vl_create_port_connect(ModuleConnect,
4695	NIL(vl_id_range), NIL(vl_expr));
4696	input_consts = lsCreate();
4697
4698	if (lsLength(args)!=0 && lsLength(master->ports)!=0) {
4699	mast_gen = lsStart(master->ports);
4700	inst_gen = lsStart(args);
4701	lsNext(mast_gen, (lsGeneric*)&m, &mast_handle);
4702
4703	while (lsNext(inst_gen, (lsGeneric*)&i, &inst_handle) != LS_NOMORE &&
4704	lsNext(mast_gen, (lsGeneric*)&m, &mast_handle) != LS_NOMORE) {
4705	if (!st_lookup(master->sig_st, m->name, (char**)&m)) {
4706	char buf[MAXSTRLEN];
4707
4708	sprintf(buf, "port '%s' is not defined in module '%s'",
4709	m->name, master->name->name);
4710	semantic_error(buf);
4711	}
4712
4713	vl_write_expr(file, i, vars);
4714	}
4715	lsFinish(inst_gen);
4716	lsFinish(mast_gen);
4717	}
4718
4719
4720	if (master->range) {
4721	lo = vl_eval_expr(master->range->left);
4722	hi = vl_eval_expr(master->range->right);
4723	if (hi < lo) {
4724	temp = hi;
4725	hi = lo;
4726	lo = temp;
4727	}
4728	} else {
4729	lo = 0;
4730	hi = -1;
4731	}
4732	retval = new_term(NIL(vl_range), lo, hi);
4733	write_var_decl(file, retval);
4734
4735	fprintf(file, ".subckt %s %s ", master->name->name, new_termname());
4736
4737	if (lsLength(args)!=0 && lsLength(master->ports)!=0) {
4738	mast_gen = lsStart(master->ports);
4739	inst_gen = lsStart(args);
4740	lsNext(mast_gen, (lsGeneric*)&m, &mast_handle);
4741	if (lo > hi) {
4742
4743	put_bin_scalar_func_connect(file, m, retval);
4744	} else {
4745
4746	put_bin_vector_func_connect(file, m, retval);
4747	}
4748	while (lsNext(inst_gen, (lsGeneric*)&i, &inst_handle) != LS_NOMORE &&
4749	lsNext(mast_gen, (lsGeneric*)&m, &mast_handle) != LS_NOMORE) {
4750
4751	constConnection = 0;
4752	if (!i) {
4753	constConnection = 1;
4754	} else if (!i->term) {
4755	constConnection = 1;
4756	} else {
4757	if (m->id_type) {
4758	if (i->type == IDExpr &&
4759	st_lookup(m->id_type->specifier->
4760	u.enum_type->domain_st,
4761	i->u.name->name,
4762	(char**)&enum_elt))
4763	constConnection = 1;
4764	}
4765	}
4766
4767	i_port->expr = i;
4768
4769	if (constConnection) {
4770
4771	put_const_port_connect(file, NIL(char),
4772	m, i_port, input_consts, retval);
4773	continue;
4774	}
4775
4776	if (m->flags & MVar) {
4777
4778	put_mvar_port_connect(file, NIL(char), m, i_port);
4779	} else {
4780	get_hilo(m, &hi, &lo);
4781	if (lo > hi) {
4782
4783	put_bin_scalar_port_connect(file, NIL(char), m, i_port);
4784	} else {
4785
4786	put_bin_vector_port_connect(file, NIL(char), m, i_port);
4787	}
4788	}
4789	}
4790	lsFinish(inst_gen);
4791	lsFinish(mast_gen);
4792
4793	fprintf(file, "\n");
4794
4795	gen = lsStart(input_consts);
4796	while(lsNext(gen, (lsGeneric*)&ct, &handle) != LS_NOMORE) {
4797	if (!isOutPort(ct->term->flag))
4798	write_var_decl(file, ct->term);
4799	vl_write_const(file, ct->const_expr, ct->term);
4800	}
4801	lsFinish(gen);
4802
4803	lsDestroy(input_consts, 0);
4804	}
4805
4806	return retval;
4807	}
4808
4809
4810	void connect_func_output(FILE file, vl_id_range out_id_sym, st_table *vars)
4811	{
4812	vl_id_range *orig_id_sym;
4813	var_info *var;
4814	int hi, lo;
4815	int old_flags;
4816	int retval;
4817
4818	if (!st_lookup(vars, out_id_sym->name, (char**)&var)) {
4819	char buf[MAXSTRLEN];
4820	sprintf(buf, "function %s has no return value", out_id_sym->name);
4821	yylineno = -1;
4822	compile_error(buf);
4823	}
4824
4825	retval = st_lookup(vl_currentFunction->sig_st, out_id_sym->name,
4826	(char**)&orig_id_sym);
4827	assert(retval);
4828	get_hilo(orig_id_sym, &hi, &lo);
4829	old_flags = orig_id_sym->flags;
4830	orig_id_sym->flags &= ~RegVar;
4831
4832
4833	if (var->current_terminal->flag & MVar) {
4834	instantiate_mvar_latch(file, 0, 0, lo, hi,
4835	out_id_sym, orig_id_sym, var,
4836	orig_id_sym->name);
4837	} else {
4838	if (lo > hi) {
4839	instantiate_bin_scalar_latch(file, 0, 0,
4840	out_id_sym, orig_id_sym, var,
4841	orig_id_sym->name);
4842	} else {
4843	instantiate_bin_vector_latch(file, 0, 0, lo, hi,
4844	out_id_sym, orig_id_sym, var,
4845	orig_id_sym->name);
4846	}
4847	}
4848
4849	orig_id_sym->flags = old_flags;
4850	}
4851
4852
4853
4854	void instantiate_latch(FILE file, st_table vars)
4855	{
4856	vl_id_range id_sym, orig_id_sym;
4857	st_generator *gen;
4858	char key, ps_buf, *dummy;
4859	var_info var, lvar;
4860	blif_latch *latch;
4861	char latch_name[MAXSTRLEN];
4862	int lo, hi;
4863	int non_block_var;
4864
4865
4866	fprintf(file, "%s latches\n", HSIS_COMMENT);
4867	gen = st_init_gen(vars);
4868	while (st_gen(gen, &key, (char**)&var)) {
4869	sprintf(latch_name, "%s%s", key, SEP_LATCH);
4870	if (vl_currentModule->latch_st) {
4871	if (st_lookup(vl_currentModule->sig_st, key, (char**)&id_sym)) {
4872	if (!(id_sym->flags & RegVar) &&
4873	!str_matchtail(id_sym->name,SEP_LATCH))
4874	continue;
4875	non_block_var = str_matchtail(id_sym->name,SEP_LATCH);
4876
4877	if (st_lookup(vl_currentModule->latch_st, key, (char**)&latch))
4878	if (latch->flags & NBASSIGN_IN_ALWAYS)
4879	continue;
4880
4881	if (dflow_analysis &&
4882	!(id_sym->flags & OutPort) && !(id_sym->flags & InPort) &&
4883	!(str_matchtail(id_sym->name,SEP_LATCH)) &&
4884	!set_find(id_sym->name, vl_currentModule->uninit_set))
4885	continue;
4886
4887	if (!st_lookup(vars, latch_name, (char**)&lvar)) lvar = var;
4888
4889	get_hilo(var->id, &hi, &lo);
4890
4891	ps_buf = vlStrdup(var->id->name);
4892	if (str_matchtail(id_sym->name,SEP_LATCH)) {
4893	strip_char(ps_buf,SEP_LATCH);
4894	st_lookup(vl_currentModule->sig_st,
4895	ps_buf, (char**)&orig_id_sym);
4896	} else {
4897	orig_id_sym = id_sym;
4898	}
4899
4900
4901	if (st_lookup(vl_currentModule->quasi_st,
4902	ps_buf, (char**)&dummy)){
4903	char *old_termname;
4904	char *dc;
4905	int n_entries;
4906	char qbuf[MAXSTRLEN];
4907	vl_id_range *qid_sym;
4908	int retval;
4909	sprintf(qbuf, "%s%s", ps_buf, SEP_QUASI);
4910	retval = st_lookup(vl_currentModule->sig_st,
4911	qbuf, (char**)&qid_sym);
4912	assert(retval);
4913	old_termname = lvar->current_terminal->name->name;
4914	dc = check_dc((!rst_ckt)?qid_sym->syndrome_expr_list:
4915	qid_sym->rst_syndrome_expr_list);
4916	n_entries = lsLength((!rst_ckt)?
4917	qid_sym->syndrome_expr_list:
4918	qid_sym->rst_syndrome_expr_list);
4919
4920	lvar->current_terminal->name->name =
4921	vlStrdup(new_termname());
4922	write_var_decl(file, lvar->current_terminal);
4923	put_quasi_table(file, dc, ps_buf, old_termname,
4924	qid_sym, lvar->current_terminal,
4925	lo, hi, n_entries);
4926	vl_chk_free(old_termname);
4927	vl_chk_free(dc);
4928	}
4929
4930
4931	if (!use_rst_ckt && (orig_id_sym->flags & RegVar)) {
4932
4933	if ((lsLength(id_sym->initial)==0) && Warn_Uninitialized) {
4934	char buf[MAXSTRLEN];
4935	sprintf(buf, "%s:%s: uninitialized",
4936	vl_currentModule->name->name, id_sym->name);
4937	Translate_Notice(buf);
4938	}
4939
4940	if ((orig_id_sym->flags) & MVar) {
4941
4942	reset_mvar_latch(file, non_block_var,
4943	id_sym, lo, hi, ps_buf);
4944	} else {
4945
4946	if (lo > hi) {
4947
4948	reset_bin_scalar_latch(file, non_block_var,
4949	id_sym, ps_buf);
4950	} else {
4951
4952	reset_bin_vector_latch(file, non_block_var,
4953	id_sym, lo, hi, ps_buf);
4954	}
4955	}
4956	} else {
4957
4958	if (lsLength(id_sym->initial)>0 &&
4959	get_decl_flags(var->id->mpg_master_exp) & RegVar) {
4960
4961
4962
4963	instantiate_reset_mux(file, id_sym, lo, hi, var, lvar);
4964	}
4965	}
4966
4967
4968	if (var->current_terminal->flag & MVar) {
4969	instantiate_mvar_latch(file, non_block_var, mark_sel_var,
4970	lo, hi,
4971	id_sym, orig_id_sym, lvar, ps_buf);
4972	} else {
4973	if (lo > hi) {
4974	instantiate_bin_scalar_latch(file,
4975	non_block_var, mark_sel_var,
4976	id_sym, orig_id_sym, lvar, ps_buf);
4977	} else {
4978	instantiate_bin_vector_latch(file,
4979	non_block_var, mark_sel_var, lo, hi,
4980	id_sym, orig_id_sym, lvar, ps_buf);
4981	}
4982	}
4983	vl_chk_free(ps_buf);
4984	}
4985	}
4986	}
4987	st_free_gen(gen);
4988
4989
4990	gen = st_init_gen(vl_currentModule->sig_st);
4991	while (st_gen(gen, &key, (char**)&id_sym)) {
4992	instantiate_input_latch(file, id_sym);
4993	if (wireRegister)
4994	instantiate_hidden_latch(file, id_sym);
4995	}
4996	st_free_gen(gen);
4997	}
4998
4999
5000	static void instantiate_prim_latch(FILE file, st_table sig_st)
5001	{
5002	st_generator *sig_gen;
5003	vl_id_range *id_sym;
5004	char *key;
5005
5006	sig_gen = st_init_gen(sig_st);
5007	while (st_gen(sig_gen, (char)&key, (char)&id_sym)) {
5008	if (!(id_sym->flags & RegVar)) continue;
5009
5010	fprintf(file, ".latch %s%s %s\n",
5011	id_sym->name, SEP_LATCH, id_sym->name);
5012	fprintf(file, ".r %s\n-\n", id_sym->name);
5013	}
5014	st_free_gen(sig_gen);
5015	}
5016
5017
5018	static void instantiate_edge_detector(FILE file, vl_primitive prim)
5019	{
5020	lsGen port_gen;
5021	lsHandle port_handle, port_id_handle;
5022	vl_port *port;
5023	vl_id_range port_id, port_id_sym;
5024
5025	port_gen = lsStart(prim->ports);
5026	while (lsNext(port_gen, (lsGeneric*)&port, &port_handle) != LS_NOMORE) {
5027	int retval;
5028	lsFirstItem(port->port_exp, (lsGeneric*)&port_id, &port_id_handle);
5029	retval = st_lookup(prim->sig_st, port_id->name, (char**)&port_id_sym);
5030	assert(retval);
5031
5032	if (port_id_sym->flags & EdgeDetector) {
5033	fprintf(file, ".latch %s %s%s\n",
5034	port_id_sym->name, port_id_sym->name, PIN_DELAYED);
5035	fprintf(file, ".r %s%s\n-\n", port_id_sym->name, PIN_DELAYED);
5036	}
5037	}
5038	lsFinish(port_gen);
5039	}
5040
5041
5042	static char *lib_fun[][2] = {
5043	{"vlr_mux", " %s a=%s b=%s s=%s o=%s\n"}
5044	};
5045
5046
5047	void vl_put_lib(FILE *file, ...)
5048	{
5049	char buf[MAXSTRLEN];
5050	char typ_buf[MAXSTRLEN];
5051	char cp, tcp;
5052	int code;
5053	va_list args;
5054	vl_term *type_term;
5055	void *decl;
5056	lsList domain;
5057	lsGen enum_gen;
5058	lsHandle enum_handle;
5059	vl_enumerator *enum_elt;
5060
5061	va_start(args, file);
5062	code = va_arg(args, int);
5063	type_term = va_arg(args, vl_term*);
5064
5065	cp = buf; *cp = '\0';
5066	cp = strappendS(cp, ".subckt");
5067	cp = strappend(cp, lib_fun[code][0]);
5068
5069	tcp = typ_buf; *tcp = '\0';
5070	tcp = strappend(tcp, SEP_LTRANGE);
5071
5072	if (type_term->flag & MVar) {
5073	(void) va_arg(args, char*);
5074	(void)vfprintf(file, ".names %s %s %s %s\n", args);
5075	if (!st_lookup(mod_list->decl_st,
5076	(char)type_term->term_type, (char*)&decl)) {
5077	st_insert(mod_list->decl_st,
5078	(char*)type_term->term_type,
5079	(char*)type_term->term_type);
5080	}
5081	domain = type_term->term_type->specifier->u.enum_type->domain_list;
5082	for (enum_gen=lsStart(domain);
5083	lsNext(enum_gen,(lsGeneric*)&enum_elt,&enum_handle)!=
5084	LS_NOMORE;) {
5085	fprintf(file, "%s - 1 %s\n", enum_elt->name, enum_elt->name);
5086	fprintf(file, "- %s 0 %s\n", enum_elt->name, enum_elt->name);
5087	}
5088	lsFinish(enum_gen);
5089	} else {
5090	char tbuf, fbuf, selbuf, obuf;
5091	(void) va_arg(args, char*);
5092	tbuf = va_arg(args, char *);
5093	fbuf = va_arg(args, char *);
5094	selbuf = va_arg(args, char *);
5095	obuf = va_arg(args, char *);
5096	fprintf(file, ".names %s %s %s %s\n.def 0\n",
5097	selbuf, tbuf, fbuf, obuf);
5098	fprintf(file, "1 1 - 1\n0 - 1 1\n");
5099	}
5100	va_end(args);
5101	}
5102
5103
5104	void vl_write_mv_lib(FILE file, short type, vl_term in1, vl_term in2, vl_term out)
5105	{
5106	int i;
5107	lsList domain;
5108	lsGen enum_gen;
5109	lsHandle enum_handle;
5110	vl_enumerator *enum_elt;
5111
5112	fprintf(file, ".subckt ");
5113	switch(type) {
5114	case BandExpr: fprintf(file, "%s", BLIF_LIB_AND); break;
5115	case BorExpr: fprintf(file, "%s", BLIF_LIB_OR); break;
5116	case BxorExpr: fprintf(file, "%s", BLIF_LIB_XOR); break;
5117	case BxnorExpr:fprintf(file, "%s", BLIF_LIB_XNOR); break;
5118	case BplusExpr: fprintf(file, "%s", BLIF_LIB_ADD); break;
5119	case BminusExpr:fprintf(file, "%s", BLIF_LIB_SUB); break;
5120	case UandExpr: case UnandExpr:
5121	case UorExpr: case UnorExpr:
5122	case UxorExpr: case UxnorExpr: break;
5123	}
5124	if (in1->term_type != in2->term_type) {
5125	char buf[MAXSTRLEN];
5126	sprintf(buf,"operation between var %s & %s of different types",
5127	in1->name->name, in2->name->name);
5128	semantic_error(buf);
5129	}
5130
5131	domain = in1->term_type->specifier->u.enum_type->domain_list;
5132
5133	fprintf(file, "%s", SEP_LTRANGE);
5134	for (enum_gen=lsStart(domain), i=1;
5135	lsNext(enum_gen,(lsGeneric*)&enum_elt,&enum_handle)!=LS_NOMORE;
5136	i++)
5137	fprintf(file, "%s%c", enum_elt->name, (i==lsLength(domain)?'\0':':'));
5138	fprintf(file, "%s", SEP_RTRANGE);
5139	fprintf(file, " %s %s %s %s\n", new_termname(),
5140	in1->name->name, in2->name->name, out->name->name);
5141	}
5142
5143
5144	st_table conflict_arbitrator(FILE file, array_t *vars_array)
5145	{
5146	st_generator *gen;
5147	st_table vars, retval;
5148	char *key;
5149	var_info *cur_var;
5150	array_t *controls;
5151	vl_term *ctrl_i;
5152	int lo, hi;
5153	int num_changer;
5154	int i;
5155	vl_id_range id_sym, temp_id_sym;
5156
5157	fprintf(file,"%s conflict arbitrators\n", HSIS_COMMENT);
5158	retval = st_init_table(strcmp, st_strhash);
5159
5160	gen = st_init_gen(vl_currentModule->sig_st);
5161	while (st_gen(gen, &key, (char**)&id_sym)) {
5162
5163	if ((id_sym->flags & InPort) && !(id_sym->flags & OutPort)) continue;
5164
5165	if (!vl_currentPrimitive && !vl_currentFunction) {
5166	if (strstr(key,SEP_LATCH))
5167	continue;
5168	if (strstr(key,SEP_QUASI))
5169	continue;
5170	}
5171
5172	if (!vl_currentPrimitive && !vl_currentFunction)
5173	if (dflow_analysis &&
5174	!(id_sym->flags & OutPort) && !(id_sym->flags & InPort) &&
5175	!(str_matchtail(id_sym->name,SEP_LATCH)) &&
5176	!set_find(id_sym->name, vl_currentModule->uninit_set))
5177	continue;
5178
5179	if (!(id_sym->flags & RegVar) &&
5180	!str_matchtail(id_sym->name,SEP_LATCH)) {
5181	create_wire_nondeterminism(file, key, id_sym, vars_array);
5182	continue;
5183	}
5184
5185	if (!vl_currentPrimitive && !vl_currentFunction)
5186	if (vl_currentModule->combVar_st) {
5187	if (st_lookup(vl_currentModule->combVar_st,
5188	id_sym->name, (char**)&temp_id_sym) &&
5189	!st_lookup(vl_currentModule->seqVar_st,
5190	id_sym->name, (char**)&temp_id_sym)){
5191	create_wire_nondeterminism(file, key, id_sym, vars_array);
5192	continue;
5193	}
5194	}
5195
5196	controls = array_alloc(vl_term*, 0);
5197
5198	num_changer = 0;
5199	for (i=0; i<array_n(vars_array); i++) {
5200	vars = array_fetch(st_table*, vars_array, i);
5201	if (vars) {
5202	if (st_lookup(vars, key, (char**)&cur_var)) {
5203	ctrl_i = syndrome_to_control(file, key, vars);
5204	array_insert_last(vl_term*, controls, ctrl_i);
5205	num_changer++;
5206	continue;
5207	}
5208	}
5209	array_insert_last(vl_term*, controls, NIL(vl_term));
5210	}
5211
5212	assert(array_n(vars_array) == array_n(controls));
5213	get_hilo(id_sym, &hi, &lo);
5214	if (id_sym->flags &MVar) {
5215
5216	create_mvar_nondeterminism(file, retval, key, id_sym, lo, hi,
5217	controls, vars_array);
5218	} else {
5219
5220	if (lo > hi) {
5221
5222	create_bin_scalar_nondeterminism(file, retval, key, id_sym,
5223	controls, vars_array);
5224	} else {
5225
5226	create_bin_vector_nondeterminism(file, retval, key, id_sym,
5227	lo, hi, controls, vars_array);
5228	}
5229	}
5230
5231	}
5232	st_free_gen(gen);
5233
5234	return retval;
5235	}
5236
5237
5238	st_table func_conflict_arbitrator(FILE file, vl_id_range out_id_sym, array_t vars_array)
5239	{
5240	st_generator *gen;
5241	st_table *retval;
5242	char *key;
5243	int old_flags;
5244	vl_id_range id_sym, temp_id_sym;
5245	blif_latch *latch;
5246
5247	fprintf(file,"%s conflict arbitrators\n", HSIS_COMMENT);
5248	retval = st_init_table(strcmp, st_strhash);
5249
5250	gen = st_init_gen(vl_currentModule->sig_st);
5251	while (st_gen(gen, &key, (char**)&id_sym)) {
5252
5253	if (id_sym->flags & InPort) continue;
5254
5255	if (!vl_currentPrimitive && !vl_currentFunction)
5256	if (st_lookup(vl_currentModule->latch_st, key, (char**)&latch) \|\|
5257	strstr(key,SEP_LATCH)) continue;
5258
5259	if (!vl_currentPrimitive && !vl_currentFunction)
5260	if (dflow_analysis &&
5261	!(id_sym->flags & OutPort) && !(id_sym->flags & InPort) &&
5262	!(str_matchtail(id_sym->name,SEP_LATCH)) &&
5263	!set_find(id_sym->name, vl_currentModule->uninit_set))
5264	continue;
5265
5266	if (!(id_sym->flags & RegVar) &&
5267	!str_matchtail(id_sym->name,SEP_LATCH)) {
5268	create_wire_nondeterminism(file, key, id_sym, vars_array);
5269	continue;
5270	}
5271
5272	if (!vl_currentPrimitive && !vl_currentFunction)
5273	if (vl_currentModule->combVar_st) {
5274	if (st_lookup(vl_currentModule->combVar_st,
5275	id_sym->name, (char**)&temp_id_sym)){
5276	create_wire_nondeterminism(file, key, id_sym, vars_array);
5277	continue;
5278	}
5279	}
5280
5281	if (vl_currentFunction && strcmp(out_id_sym->name, key))
5282	continue;
5283	else {
5284	old_flags = id_sym->flags;
5285	id_sym->flags &= ~RegVar;
5286
5287	create_wire_nondeterminism(file, key, id_sym, vars_array);
5288
5289	id_sym->flags = old_flags;
5290	}
5291	}
5292	st_free_gen(gen);
5293
5294	return retval;
5295	}
5296
5297	static void vl_write_initial_generator(FILE *file)
5298	{
5299	char buf[MAXSTRLEN];
5300
5301
5302	if (ith_module!=0) return;
5303
5304
5305	if (!use_rst_ckt) return;
5306
5307	sprintf(buf, "%s%s", Initial_Signal->name->name, "_PS");
5308	fprintf(file, ".r %s\n1\n", Initial_Signal->name->name);
5309	fprintf(file, ".names %s\n", buf);
5310	fprintf(file, "0\n");
5311	fprintf(file, ".latch %s %s\n", buf, Initial_Signal->name->name);
5312	}
5313
5314
5315	static void vl_write_encoding(FILE *file)
5316	{
5317	st_generator id_gen, symbolic_gen;
5318	char key, symbolic_value, *code;
5319	vl_id_range *id_sym;
5320	int hi, lo, v;
5321	int idx, idx_lo, idx_hi;
5322	int i;
5323
5324	if (!do_encoding) return;
5325
5326	id_gen = st_init_gen(vl_currentModule->sig_st);
5327	while (st_gen(id_gen, &key, (char**)&id_sym)) {
5328	if (id_sym->symbolic_values) {
5329	if (!st_count(id_sym->symbolic_values)) continue;
5330	if (!(id_sym->flags & MVar)) {
5331	get_hilo(id_sym, &hi, &lo);
5332	if (lo < hi) {
5333	if (!id_sym->range) {
5334	fprintf(file, ".encode ");
5335	for (i=lo; i<=hi; i++)
5336	fprintf(file, "%s%s%d%s ", id_sym->name,
5337	SEP_LBITSELECT, i, SEP_RBITSELECT);
5338	fprintf(file, "%s\n", id_sym->name);
5339	symbolic_gen = st_init_gen(id_sym->symbolic_values);
5340	while (st_gen(symbolic_gen, &symbolic_value, &code)) {
5341	for (i=lo, v=atoi(code); i<=hi; i++, v >>= 1)
5342	fprintf(file, "%d ", v&1);
5343	fprintf(file, "%s\n", symbolic_value);
5344	}
5345	st_free_gen(symbolic_gen);
5346	fprintf(file, ".endcode\n\n");
5347	} else {
5348	idx_lo = vl_eval_expr(id_sym->range->left);
5349	if (id_sym->range->right)
5350	idx_hi = vl_eval_expr(id_sym->range->right);
5351	else
5352	idx_hi = idx_lo;
5353
5354	for (idx=idx_lo; idx<=idx_hi; idx++) {
5355	fprintf(file, ".encode ");
5356	for (i=lo; i<=hi; i++)
5357	fprintf(file, "%s%s%d%s%s%d%s ", id_sym->name,
5358	SEP_LARRAY, idx, SEP_RARRAY,
5359	SEP_LBITSELECT, i, SEP_RBITSELECT);
5360	fprintf(file, "%s%s%d%s\n",
5361	id_sym->name, SEP_LARRAY, idx, SEP_RARRAY);
5362	symbolic_gen =
5363	st_init_gen(id_sym->symbolic_values);
5364	while (st_gen(symbolic_gen,
5365	&symbolic_value, &code)) {
5366	for (i=lo, v=atoi(code); i<=hi; i++, v >>= 1)
5367	fprintf(file, "%d ", v&1);
5368	fprintf(file, "%s\n", symbolic_value);
5369	}
5370	st_free_gen(symbolic_gen);
5371	fprintf(file, ".endcode\n\n");
5372	}
5373	}
5374	}
5375	}
5376	}
5377	}
5378	st_free_gen(id_gen);
5379	}
5380
5381	static void non_block_assignment(FILE file, st_table vars)
5382	{
5383	st_generator *gen;
5384	lsList ripple=(lsList)0;
5385	char *key;
5386	char latch_name[MAXSTRLEN];
5387	char *dc;
5388	vl_id_range id_sym, orig_id_sym;
5389	var_info *id_var;
5390	vl_term *out_term;
5391	vl_term procedural_ctrl, procedural_term;
5392	int n_entries, hi, lo;
5393	int non_block_wire = 0;
5394
5395	fprintf(file, "%s non-blocking assignments %s\n",
5396	HSIS_COMMENT, (rst_ckt)?"for initial":"");
5397	gen = st_init_gen(vl_currentModule->sig_st);
5398	while (st_gen(gen, &key, (char**)&id_sym)) {
5399	non_block_wire = 0;
5400	ripple = (lsList)0;
5401	procedural_ctrl = NIL(vl_term);
5402	procedural_term = NIL(vl_term);
5403	if (!strstr(key,SEP_LATCH)) continue;
5404
5405	if (!rst_ckt && lsLength(id_sym->syndrome_expr_list)==0) continue;
5406	if (rst_ckt && lsLength(id_sym->rst_syndrome_expr_list)==0) continue;
5407
5408
5409	strcpy(latch_name, id_sym->name);
5410	strip_char(latch_name, SEP_LATCH);
5411
5412	if (rst_ckt &&
5413	!st_lookup(vars, latch_name, (char**)&id_var) &&
5414	!st_lookup(vars, key, (char**)&id_var)) continue;
5415
5416
5417	if (st_lookup(vars, latch_name, (char**)&id_var)) {
5418	if (id_var->extra) {
5419	procedural_ctrl = array_or(file, (array_t*)(id_var->extra));
5420	procedural_term = id_var->current_terminal;
5421	decomposeTable = 1;
5422	}
5423	}
5424
5425	if (st_lookup(vl_currentModule->sig_st,
5426	latch_name, (char**)&orig_id_sym)) {
5427	vl_id_range *temp_id_sym;
5428
5429	if (!(orig_id_sym->flags&RegVar)) non_block_wire = 1;
5430
5431	if (vl_currentModule->combVar_st) {
5432	if (st_lookup(vl_currentModule->combVar_st,
5433	latch_name, (char**)&temp_id_sym)) {
5434
5435	non_block_wire = 1;
5436	}
5437	}
5438	}
5439	n_entries = lsLength((!rst_ckt)?
5440	id_sym->syndrome_expr_list:
5441	id_sym->rst_syndrome_expr_list);
5442	get_hilo(id_sym, &hi, &lo);
5443	out_term = new_term(id_sym->range, lo, hi);
5444	out_term->flag = id_sym->flags;
5445	out_term->term_type = id_sym->id_type;
5446	out_term->name->unintType = id_sym->unintType;
5447	write_var_decl(file, out_term);
5448
5449
5450	dc = check_dc((!rst_ckt)?id_sym->syndrome_expr_list:
5451	id_sym->rst_syndrome_expr_list);
5452
5453	if ((id_sym->flags & MVar) \|\| (lo > hi)) {
5454
5455	if (!id_sym->range) {
5456	put_nblock_scalar_simple_table(file, dc, id_sym,
5457	non_block_wire, latch_name, out_term,
5458	n_entries, lo, hi, ripple,
5459	procedural_ctrl, procedural_term);
5460	} else {
5461	put_nblock_scalar_array_table(file, dc, id_sym,
5462	non_block_wire,
5463	latch_name, out_term,
5464	n_entries, lo, hi, ripple);
5465	}
5466	} else {
5467
5468	put_nblock_vector_table(file, dc, id_sym,
5469	non_block_wire,
5470	latch_name, out_term,
5471	n_entries, lo, hi, &ripple,
5472	procedural_ctrl, procedural_term);
5473	}
5474
5475
5476	st_insert(vars, key,
5477	(char*)create_var_info(vl_copy_id_range(id_sym), out_term));
5478
5479	vl_chk_free(dc);
5480	}
5481	st_free_gen(gen);
5482	}
5483
5484
5485	static void quasi_cont_assignment(FILE *file)
5486	{
5487	st_generator *gen;
5488	char *key;
5489	vl_id_range *id_sym;
5490	char quasi_name[MAXSTRLEN];
5491	char sync_name[MAXSTRLEN];
5492	char *dc;
5493	int n_entries, hi, lo;
5494	vl_term *out_term;
5495
5496	fprintf(file, "%s quasi-continuous assignment\n", HSIS_COMMENT);
5497
5498	gen = st_init_gen(vl_currentModule->sig_st);
5499	while (st_gen(gen, &key, (char**)&id_sym)) {
5500	if (!strstr(key,SEP_QUASI)) continue;
5501	if (!rst_ckt && lsLength(id_sym->syndrome_expr_list) == 0) continue;
5502	if (rst_ckt && lsLength(id_sym->rst_syndrome_expr_list) == 0) continue;
5503
5504	strcpy(quasi_name, id_sym->name);
5505	strip_char(quasi_name, SEP_QUASI);
5506
5507	get_hilo(id_sym, &hi, &lo);
5508	out_term = new_term(id_sym->range, lo, hi);
5509	out_term->flag = id_sym->flags;
5510	out_term->term_type = id_sym->id_type;
5511	vl_chk_free(out_term->name->name);
5512	out_term->name->name = strip_char(vlStrdup(id_sym->name),SEP_QUASI);
5513
5514
5515
5516	dc = check_dc((!rst_ckt)?id_sym->syndrome_expr_list:
5517	id_sym->rst_syndrome_expr_list);
5518
5519	n_entries = lsLength((!rst_ckt)?
5520	id_sym->syndrome_expr_list:
5521	id_sym->rst_syndrome_expr_list);
5522
5523	sprintf(sync_name, "%s%s%s", quasi_name, SEP_GATEPIN, PIN_PS);
5524
5525	put_quasi_table(file, dc, quasi_name, sync_name, id_sym, out_term,
5526	lo, hi, n_entries);
5527
5528	vl_chk_free(dc);
5529	}
5530	st_free_gen(gen);
5531	}
5532
5533
5534	static void vl_prioritize_sequence(FILE *file, lsList vars_list,
5535	lsList pause_list,
5536	st_table *result_st)
5537	{
5538	st_generator *vars_gen;
5539	lsGen gen, pause_gen, pt_gen;
5540	lsHandle handle, pause_handle, pt_handle;
5541	lsList pt_list;
5542	vl_id_range *id_sym;
5543	char *key;
5544	st_table new_vars, pause_set;
5545	st_table t_set, i_set;
5546	var_info *id_var_info;
5547	int touched;
5548	vl_term pause_term, new_term;
5549	int hi, lo, i, j, k;
5550	int bit, idx;
5551	int table_width=0;
5552	int t_dup=0, val;
5553	char header_buf[MAXSTRLEN], buf[MAXSTRLEN], var_buf[MAXSTRLEN];
5554	char *t_name;
5555
5556	assert(lsLength(vars_list) == lsLength(pause_list));
5557
5558	if (lsLength(vars_list) == 0) return;
5559
5560	fprintf(file, "%s sequence prioritizer\n", HSIS_COMMENT);
5561
5562	vars_gen = st_init_gen(vl_currentModule->sig_st);
5563	while (st_gen(vars_gen, &key, (char**)&id_sym)) {
5564	table_width = 0;
5565
5566	for (gen=lsStart(vars_list), touched = 0;
5567	lsNext(gen,(lsGeneric*)&new_vars,&handle) != LS_NOMORE; ) {
5568	if (st_lookup(new_vars, key, (char**)&id_var_info)) {
5569	touched = 1;
5570	break;
5571	}
5572	}
5573	(void)lsFinish(gen);
5574	if (!touched) continue;
5575
5576	get_hilo(id_sym, &hi, &lo);
5577	new_term = typed_new_term(id_sym->id_type, id_sym->range, lo, hi);
5578	new_term->flag \|= (id_sym->flags & MVar) ? MVar : 0;
5579	write_var_decl(file, new_term);
5580
5581	t_set = st_init_table(strcmp, st_strhash);
5582	i_set = st_init_table(st_ptrcmp, st_ptrhash);
5583
5584	sprintf(header_buf, ".names ");
5585
5586	pt_list = lsCreate();
5587	for (gen=lsStart(vars_list), pause_gen=lsStart(pause_list), i=0;
5588	lsNext(gen,(lsGeneric*)&new_vars,&handle) != LS_NOMORE&&
5589	lsNext(pause_gen,(lsGeneric*)&pause_set,&pause_handle) !=
5590	LS_NOMORE; ) {
5591	if (st_lookup(new_vars, key, (char**)&id_var_info)) {
5592	table_width++;
5593
5594	pause_term = fg_write_lc_in_LabelSet(file, pause_set, 1);
5595	lsNewEnd(pt_list, (lsGeneric)pause_term, 0);
5596
5597
5598	t_dup=0;
5599	if (st_lookup(t_set,
5600	id_var_info->current_terminal->name->name,
5601	&t_name)) {
5602	st_insert(i_set, (char*)i, 0);
5603	t_dup=1;
5604	} else {
5605	st_insert(t_set,
5606	id_var_info->current_terminal->name->name,
5607	0);
5608	}
5609	i++;
5610
5611	new_term->flag \|= id_var_info->current_terminal->flag;
5612	}
5613	}
5614	(void)lsFinish(gen);
5615	(void)lsFinish(pause_gen);
5616
5617	sprintf(var_buf, "%s", id_sym->name);
5618	strip_char(var_buf, SEP_LATCH);
5619	if (!id_sym->range) {
5620	if (lo > hi \|\| id_sym->flags &MVar) {
5621	sprintf(buf, "%s\n", new_term->name->name);
5622	strcat(header_buf, buf);
5623	sprintf(buf, "%s -\n", HSIS_DEFAULT);
5624	strcat(header_buf, buf);
5625	} else {
5626	sprintf(buf, "%s ", HSIS_ARROW);
5627	strcat(header_buf, buf);
5628	for (bit=lo; bit<=hi; bit++) {
5629	sprintf(buf, "%s%s%d%s ",
5630	new_term->name->name,
5631	SEP_LBITSELECT, bit, SEP_RBITSELECT);
5632	strcat(header_buf, buf);
5633	}
5634	strcat(header_buf, "\n");
5635	sprintf(buf, "%s ", HSIS_DEFAULT);
5636	strcat(header_buf, buf);
5637	for (bit=lo; bit<=hi; bit++) {
5638	sprintf(buf, "- ");
5639	strcat(header_buf, buf);
5640	}
5641	strcat(header_buf, "\n");
5642	}
5643	} else {
5644	int idx_hi, idx_lo;
5645	idx_lo = vl_eval_expr(id_sym->range->left);
5646	if (id_sym->range->right)
5647	idx_hi = vl_eval_expr(id_sym->range->right);
5648	else
5649	idx_hi = idx_lo;
5650
5651	sprintf(buf, "%s ", HSIS_ARROW);
5652	strcat(header_buf, buf);
5653	for (idx=idx_lo; idx<=idx_hi; idx++) {
5654	if (lo > hi \|\| id_sym->flags &MVar) {
5655	sprintf(buf, "%s%s%d%s ",
5656	new_term->name->name,
5657	SEP_LARRAY, idx, SEP_RARRAY);
5658	strcat(header_buf, buf);
5659	} else {
5660	for (bit=lo; bit<=hi; bit++) {
5661	sprintf(buf, "%s%s%d%s%s%d%s ",
5662	new_term->name->name,
5663	SEP_LARRAY, idx, SEP_RARRAY,
5664	SEP_LBITSELECT, bit, SEP_RBITSELECT);
5665	strcat(header_buf, buf);
5666	}
5667	}
5668	}
5669	strcat(header_buf, "\n");
5670	sprintf(buf, "%s ", HSIS_DEFAULT);
5671	strcat(header_buf, buf);
5672	for (idx=idx_lo; idx<=idx_hi; idx++) {
5673	if (lo > hi \|\| id_sym->flags & MVar) {
5674	sprintf(buf, "- ");
5675	strcat(header_buf, buf);
5676	} else {
5677	for (bit=lo; bit<=hi; bit++) {
5678	sprintf(buf, "- ");
5679	strcat(header_buf, buf);
5680	}
5681	}
5682	}
5683	}
5684
5685	fprintf(file, "%s", header_buf);
5686
5687	for (gen=lsStart(vars_list),
5688	pause_gen=lsStart(pause_list),
5689	pt_gen=lsStart(pt_list),
5690	i=0;
5691	lsNext(gen,(lsGeneric*)&new_vars,&handle) != LS_NOMORE&&
5692	lsNext(pause_gen,(lsGeneric*)&pause_set,&pause_handle) !=
5693	LS_NOMORE; ) {
5694	if (st_lookup(new_vars, key, (char**)&id_var_info)) {
5695	int retval = lsNext(pt_gen,(lsGeneric*)&pause_term,&pt_handle);
5696	assert(retval != LS_NOMORE);
5697	if (!id_sym->range) {
5698
5699	if (lo > hi \|\| id_sym->flags & MVar) {
5700
5701	for (j=0; j<i; j++)
5702	if (st_lookup(i_set, (char)j, (char*)&val))
5703	fprintf(file, "- ");
5704	else
5705	fprintf(file, "- - ");
5706	if (st_lookup(i_set, (char)j, (char*)&val))
5707	fprintf(file, "1 ");
5708	else
5709	fprintf(file, "1 - ");
5710	j++;
5711	for (; j<table_width; j++)
5712	if (st_lookup(i_set, (char)j, (char*)&val))
5713	fprintf(file, "- ");
5714	else
5715	fprintf(file, "- - ");
5716	fprintf(file, "%s%s\n", HSIS_EQUAL,
5717	id_var_info->current_terminal->name->name);
5718	i++;
5719	} else {
5720
5721	for (j=0; j<i; j++) {
5722	fprintf(file, "- ");
5723	if (!st_lookup(i_set, (char)j, (char*)&val))
5724	for (k=lo; k<=hi; k++) fprintf(file, "- ");
5725	}
5726	fprintf(file, "1 ");
5727	if (!st_lookup(i_set, (char)j, (char*)&val))
5728	for (k=lo; k<=hi; k++) fprintf(file, "- ");
5729	j++;
5730	for (; j<table_width; j++) {
5731	fprintf(file, "- ");
5732	if (!st_lookup(i_set, (char)j, (char*)&val))
5733	for (k=lo; k<=hi; k++) fprintf(file, "- ");
5734	}
5735	for (k=lo; k<=hi; k++)
5736	fprintf(file, "%s%s%s%d%s ", HSIS_EQUAL,
5737	id_var_info->
5738	current_terminal->name->name,
5739	SEP_LBITSELECT, k, SEP_RBITSELECT);
5740	fprintf(file, "\n");
5741	i++;
5742	}
5743	} else {
5744
5745	int idx_hi, idx_lo;
5746	idx_lo = vl_eval_expr(id_sym->range->left);
5747	if (id_sym->range->right)
5748	idx_hi = vl_eval_expr(id_sym->range->right);
5749	else
5750	idx_hi = idx_lo;
5751
5752	if (lo > hi \|\| id_sym->flags & MVar) {
5753
5754	for (j=0; j<i; j++) {
5755	fprintf(file, "- ");
5756	if (!st_lookup(i_set, (char)j, (char*)&val))
5757	for (idx=idx_lo; idx<=idx_hi; idx++)
5758	fprintf(file, "- ");
5759	}
5760	fprintf(file, "1 ");
5761	if (!st_lookup(i_set, (char)j, (char*)&val))
5762	for (idx=idx_lo; idx<=idx_hi; idx++)
5763	fprintf(file, "- ");
5764	j++;
5765	for (; j<table_width; j++) {
5766	fprintf(file, "- ");
5767	if (!st_lookup(i_set, (char)j, (char*)&val))
5768	for (idx=idx_lo; idx<=idx_hi; idx++)
5769	fprintf(file, "- ");
5770	}
5771	for (idx=idx_lo; idx<=idx_hi; idx++)
5772	fprintf(file, "%s%s%s%d%s\n", HSIS_EQUAL,
5773	id_var_info->current_terminal->name->name,
5774	SEP_LARRAY, idx, SEP_RARRAY);
5775	i++;
5776	} else {
5777
5778	for (j=0; j<i; j++) {
5779	fprintf(file, "- ");
5780	if (!st_lookup(i_set, (char)j, (char*)&val))
5781	for (idx=idx_lo; idx<=idx_hi; idx++)
5782	for (k=lo; k<=hi; k++)
5783	fprintf(file, "- ");
5784	}
5785	fprintf(file, "1 ");
5786	if (!st_lookup(i_set, (char)j, (char*)&val))
5787	for (idx=idx_lo; idx<=idx_hi; idx++)
5788	for (k=lo; k<=hi; k++) fprintf(file, "- ");
5789	j++;
5790	for (; j<table_width; j++) {
5791	fprintf(file, "- ");
5792	if (!st_lookup(i_set, (char)j, (char*)&val))
5793	for (idx=idx_lo; idx<=idx_hi; idx++)
5794	for (k=lo; k<=hi; k++)
5795	fprintf(file, "- ");
5796	}
5797	for (idx=idx_lo; idx<=idx_hi; idx++)
5798	for (k=lo; k<=hi; k++)
5799	fprintf(file, "%s%s%s%d%s%s%d%s\n",
5800	HSIS_EQUAL,
5801	id_var_info->current_terminal->name->name,
5802	SEP_LARRAY, idx, SEP_RARRAY,
5803	SEP_LBITSELECT, k, SEP_RBITSELECT);
5804	i++;
5805	}
5806	}
5807	}
5808	}
5809	(void)lsFinish(gen);
5810	(void)lsFinish(pause_gen);
5811	(void)lsFinish(pt_gen);
5812
5813	st_insert(result_st, id_sym->name,
5814	(char*)create_var_info(vl_copy_id_range(id_sym),
5815	new_term));
5816
5817	}
5818	st_free_gen(vars_gen);
5819	}
5820
5821
5822	static void vl_register_pause(vertex_t pause_node, st_table old_vars)
5823	{
5824	set_t *pause_set;
5825
5826
5827	pause_set = set_empty();
5828	set_add(((fg_node_info*)pause_node->user_data)->loc, pause_set);
5829	lsNewEnd(vl_current_pause_list, (lsGeneric)pause_set, 0);
5830	lsNewEnd(vl_current_vars_list, (lsGeneric)old_vars, 0);
5831	}
5832
5833
5834
5835	static void vl_predefine_vars(FILE file, st_table vars)
5836	{
5837	st_generator *gen;
5838	char *key;
5839	vl_id_range *id_sym;
5840	vl_term *init_term;
5841	int hi, lo;
5842	var_info *id_var;
5843	char *dummy;
5844
5845	gen = st_init_gen(vl_currentModule->sig_st);
5846	while (st_gen(gen, &key, (char**)&id_sym)) {
5847
5848	if (!(id_sym->flags & RegVar)) continue;
5849	if (strstr(id_sym->name, SEP_LATCH)) continue;
5850	if (strstr(id_sym->name, SEP_QUASI)) continue;
5851	if (vl_currentModule_combVar_st)
5852	if (st_lookup(vl_currentModule_combVar_st, id_sym->name, &dummy))
5853	continue;
5854
5855	get_hilo(id_sym, &hi, &lo);
5856	init_term = typed_new_term(id_sym->id_type, id_sym->range, lo, hi);
5857	init_term->flag = id_sym->flags;
5858	id_var = create_var_info(vl_copy_id_range(id_sym), init_term);
5859	st_insert(vars, id_sym->name, (char*)id_var);
5860	id_var = create_var_info(vl_copy_id_range(id_sym), init_term);
5861	st_insert(vl_current_init_vars, id_sym->name, (char*)id_var);
5862	}
5863	st_free_gen(gen);
5864	}
5865
5866
5867
5868	static void vl_timed_init_mux(FILE file, vl_term ctrl_term,
5869	st_table orig_vars, st_table init_vars,
5870	st_table *feedback_vars)
5871	{
5872	st_generator *gen;
5873	char *key;
5874	var_info init_var, feedback_var, *orig_var;
5875	vl_term *orig_term=NIL(vl_term);
5876	int hi, lo;
5877	char *buf;
5878	int use_defined_term=0;
5879
5880	fprintf(file, "%s feedback mux\n", HSIS_COMMENT);
5881
5882	gen = st_init_gen(init_vars);
5883	while (st_gen(gen, &key, (char**)&init_var)) {
5884	use_defined_term=0;
5885	if (orig_vars) {
5886	if (st_lookup(orig_vars, key, (char**)&orig_var)) {
5887	orig_term = orig_var->current_terminal;
5888	use_defined_term=1;
5889	}
5890	}
5891	if (!use_defined_term) {
5892	get_hilo(init_var->id, &hi, &lo);
5893	buf = vlStrdup(init_var->id->name);
5894	orig_term = ((init_var->id->flags & EventVar) && smartEvent) ?
5895	vl_create_term(vl_create_id_range(WRT_BLIF_GND(file),
5896	NIL(vl_range)), 0, -1) :
5897	create_rename_term(init_var->id, buf, lo, hi);
5898	orig_term->flag = init_var->current_terminal->flag;
5899	write_var_decl(file, init_var->current_terminal);
5900	}
5901	if (st_lookup(feedback_vars, key, (char**)&feedback_var)) {
5902	instantiate_mux(file, orig_term, feedback_var->current_terminal,
5903	ctrl_term, init_var->current_terminal);
5904	} else {
5905	if (orig_term->flag & MVar)
5906	vl_write_mv_connect(file,
5907	orig_term, init_var->current_terminal);
5908	else {
5909	if ((init_var->id->flags & EventVar) && smartEvent)
5910	write_int_connect(file, 0, init_var->current_terminal);
5911	else
5912	vl_write_bin_connect(file,
5913	orig_term, init_var->current_terminal,
5914	0);
5915	}
5916
5917	}
5918	}
5919	st_free_gen(gen);
5920	}
5921
5922
5923	vl_term test_against_lc_init(FILE file)
5924	{
5925	vl_term *retval;
5926
5927	retval = new_term(NIL(vl_range), 0, -1);
5928
5929	fprintf(file, ".names %s%06x %s\n%s 0\n%s%d%s 1\n",
5930	FG_LC_PS,((fg_graph_info*)vl_writeFlowGraph->user_data)->fg_id,
5931	retval->name->name, HSIS_DEFAULT, FG_LLOC, 0, FG_RLOC);
5932
5933	return retval;
5934	}
5935
5936
5937	static void vl_write_timer(FILE *file, lsList graph_list)
5938	{
5939	lsGen gen;
5940	lsHandle handle;
5941	graph_t *graph;
5942	fg_graph_info *gdata;
5943	int i;
5944
5945	for (gen=lsStart(graph_list);
5946	lsNext(gen, (lsGeneric*)&graph, &handle) != LS_NOMORE; ) {
5947	if (vl_preDeclare) {
5948	gdata = ((fg_graph_info*)graph->user_data);
5949	if (gdata->fg_id == -1) {
5950	fg_new_fg_id();
5951	gdata->fg_id = fg_fg_id();
5952	}
5953	fprintf(file, ".mv %s%06x, %s%06x %d %s%d%s ",
5954	FG_LC_PS, gdata->fg_id, FG_LC_NS, gdata->fg_id,
5955	(gdata->pause_hi-gdata->pause_lo)*2+2,
5956	FG_LLOC, 0, FG_RLOC);
5957	for (i=gdata->pause_lo; i<gdata->pause_hi; i++)
5958	fprintf(file, "%s%d%s %s%d%s%s ",
5959	FG_LLOC, i, FG_RLOC, FG_LLOC, i,
5960	FG_RLOC, FG_TIMER_PRIME);
5961	fprintf(file, "%s%s\n", FG_LLOC, FG_RLOC);
5962	continue;
5963	}
5964
5965	if (graph) {
5966	if (!fg_check_timer_consistency(file, graph)) {
5967	char buf[MAXSTRLEN];
5968	yylineno = -1;
5969	sprintf(buf, "%s: contains delay free cycle(s)",
5970	vl_currentModule->name->name);
5971	fprintf(stderr, "%s\n", buf);
5972	}
5973	fg_set_fg(graph);
5974	fg_write_timer(file, graph);
5975	fg_set_fg(NIL(graph_t));
5976	}
5977	}
5978	lsFinish(gen);
5979	}
5980
5981
5982	FILE *openStream()
5983	{
5984	return tmpfile();
5985	}
5986
5987	void closeStream(FILE *stream)
5988	{
5989	fclose(stream);
5990	}
5991
5992	void dumpStream(FILE to, FILE from)
5993	{
5994	char buf[MAXSTRLEN];
5995
5996	rewind(from);
5997	while(fgets(buf, MAXSTRLEN, from)!=NULL)
5998	fputs(buf, to);
5999	}
6000
6001
6002	char * cfsm_inputs(char *inputs)
6003	{
6004	int len, i;
6005	char arg[MAXSTRLEN];
6006	char token[MAXSTRLEN];
6007	char *cp;
6008	static char buf[MAXSTRLEN];
6009
6010	buf[0] = '\0';
6011	len = strlen(inputs);
6012	for (cp=inputs; cp<inputs+len; ) {
6013	i = 0;
6014	while ((cp == ' ' \|\| cp == '\t') && *cp != '\0') cp++;
6015	while ((cp != ' ' && cp != '\t') && *cp != '\0') {
6016	token[i] = *cp;
6017	cp++; i++;
6018	}
6019	if (i > 0) {
6020	token[i] = '\0';
6021	sprintf(arg, " %s=%s", token, token);
6022	strcat(buf, arg);
6023	}
6024	}
6025
6026	return buf;
6027	}
6028
6029	char cfsm_ports(char ports)
6030	{
6031	int len, i;
6032	char arg[MAXSTRLEN];
6033	char token[MAXSTRLEN];
6034	char *cp;
6035	static char buf[MAXSTRLEN];
6036	int ithToken;
6037
6038	buf[0] = '\0';
6039	len = strlen(ports);
6040	ithToken=0;
6041	for (cp=ports; cp<ports+len; ) {
6042	i = 0;
6043	while ((cp == ' ' \|\| cp == '\t') && *cp != '\0') cp++;
6044	while ((cp != ' ' && cp != '\t') && *cp != '\0') {
6045	token[i] = *cp;
6046	cp++; i++;
6047	}
6048	if (i > 0) {
6049	token[i] = '\0';
6050	if (ithToken > 0)
6051	sprintf(arg, " , %s", token);
6052	else
6053	sprintf(arg, " %s", token);
6054	strcat(buf, arg);
6055	ithToken++;
6056	}
6057	}
6058
6059	return buf;
6060	}
6061
6062
6063	FILE *vl_begin_buffer()
6064	{
6065	return tmpfile();
6066	}
6067
6068
6069	void vl_close_buffer(FILE *buffer)
6070	{
6071	fclose(buffer);
6072	}
6073
6074
6075	void vl_append_buffer(FILE main_stream, FILE buffer)
6076	{
6077	char buf[MAXSTRLEN];
6078
6079	rewind(buffer);
6080	while(fgets(buf, MAXSTRLEN, buffer)!=NULL)
6081	fputs(buf, main_stream);
6082	}

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source: vis_dev/vl2mv-2.3/src/parser/vl_write.c

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