2 * yosys -- Yosys Open SYnthesis Suite
4 * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
5 * 2019 Eddie Hung <eddie@fpgeh.com>
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 // https://stackoverflow.com/a/46137633
24 #define bswap32 _byteswap_ulong
25 #elif defined(__APPLE__)
26 #include <libkern/OSByteOrder.h>
27 #define bswap32 OSSwapInt32
28 #elif defined(__GNUC__)
29 #define bswap32 __builtin_bswap32
32 inline static uint32_t bswap32(uint32_t x
)
34 // https://stackoverflow.com/a/27796212
35 register uint32_t value
= number_to_be_reversed
;
36 uint8_t lolo
= (value
>> 0) & 0xFF;
37 uint8_t lohi
= (value
>> 8) & 0xFF;
38 uint8_t hilo
= (value
>> 16) & 0xFF;
39 uint8_t hihi
= (value
>> 24) & 0xFF;
47 #include "kernel/yosys.h"
48 #include "kernel/sigtools.h"
49 #include "kernel/utils.h"
52 PRIVATE_NAMESPACE_BEGIN
54 inline int32_t to_big_endian(int32_t i32
) {
55 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
57 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
60 #error "Unknown endianness"
64 void aiger_encode(std::ostream
&f
, int x
)
69 f
.put((x
& 0x7f) | 0x80);
81 pool
<SigBit
> input_bits
, output_bits
;
82 dict
<SigBit
, SigBit
> not_map
, alias_map
;
83 dict
<SigBit
, pair
<SigBit
, SigBit
>> and_map
;
84 vector
<SigBit
> ci_bits
, co_bits
;
85 dict
<SigBit
, Cell
*> ff_bits
;
86 dict
<SigBit
, float> arrival_times
;
88 vector
<pair
<int, int>> aig_gates
;
89 vector
<int> aig_outputs
;
90 int aig_m
= 0, aig_i
= 0, aig_l
= 0, aig_o
= 0, aig_a
= 0;
92 dict
<SigBit
, int> aig_map
;
93 dict
<SigBit
, int> ordered_outputs
;
95 vector
<Cell
*> box_list
;
97 int mkgate(int a0
, int a1
)
100 aig_gates
.push_back(a0
> a1
? make_pair(a0
, a1
) : make_pair(a1
, a0
));
104 int bit2aig(SigBit bit
)
106 auto it
= aig_map
.find(bit
);
107 if (it
!= aig_map
.end()) {
108 log_assert(it
->second
>= 0);
112 // NB: Cannot use iterator returned from aig_map.insert()
113 // since this function is called recursively
116 if (not_map
.count(bit
)) {
117 a
= bit2aig(not_map
.at(bit
)) ^ 1;
119 if (and_map
.count(bit
)) {
120 auto args
= and_map
.at(bit
);
121 int a0
= bit2aig(args
.first
);
122 int a1
= bit2aig(args
.second
);
125 if (alias_map
.count(bit
)) {
126 a
= bit2aig(alias_map
.at(bit
));
129 if (bit
== State::Sx
|| bit
== State::Sz
) {
130 log_debug("Design contains 'x' or 'z' bits. Treating as 1'b0.\n");
131 a
= aig_map
.at(State::S0
);
139 XAigerWriter(Module
*module
, bool holes_mode
=false) : module(module
), sigmap(module
)
141 pool
<SigBit
> undriven_bits
;
142 pool
<SigBit
> unused_bits
;
144 // promote public wires
145 for (auto wire
: module
->wires())
146 if (wire
->name
[0] == '\\')
149 // promote input wires
150 for (auto wire
: module
->wires())
151 if (wire
->port_input
)
154 // promote keep wires
155 for (auto wire
: module
->wires())
156 if (wire
->get_bool_attribute(ID::keep
))
159 for (auto wire
: module
->wires())
160 for (int i
= 0; i
< GetSize(wire
); i
++)
162 SigBit
wirebit(wire
, i
);
163 SigBit bit
= sigmap(wirebit
);
165 if (bit
.wire
== nullptr) {
166 if (wire
->port_output
) {
167 aig_map
[wirebit
] = (bit
== State::S1
) ? 1 : 0;
168 output_bits
.insert(wirebit
);
173 undriven_bits
.insert(bit
);
174 unused_bits
.insert(bit
);
176 bool keep
= wire
->get_bool_attribute(ID::keep
);
177 if (wire
->port_input
|| keep
)
178 input_bits
.insert(bit
);
180 if (wire
->port_output
|| keep
) {
182 alias_map
[wirebit
] = bit
;
183 output_bits
.insert(wirebit
);
187 dict
<IdString
,dict
<IdString
,int>> arrival_cache
;
188 for (auto cell
: module
->cells()) {
189 RTLIL::Module
* inst_module
= module
->design
->module(cell
->type
);
190 if (!cell
->has_keep_attr()) {
191 if (cell
->type
== "$_NOT_")
193 SigBit A
= sigmap(cell
->getPort("\\A").as_bit());
194 SigBit Y
= sigmap(cell
->getPort("\\Y").as_bit());
195 unused_bits
.erase(A
);
196 undriven_bits
.erase(Y
);
201 if (cell
->type
== "$_AND_")
203 SigBit A
= sigmap(cell
->getPort("\\A").as_bit());
204 SigBit B
= sigmap(cell
->getPort("\\B").as_bit());
205 SigBit Y
= sigmap(cell
->getPort("\\Y").as_bit());
206 unused_bits
.erase(A
);
207 unused_bits
.erase(B
);
208 undriven_bits
.erase(Y
);
209 and_map
[Y
] = make_pair(A
, B
);
213 if (cell
->type
== "$__ABC9_FF_" &&
214 // The presence of an abc9_mergeability attribute indicates
215 // that we do want to pass this flop to ABC
216 cell
->attributes
.count("\\abc9_mergeability"))
218 SigBit D
= sigmap(cell
->getPort("\\D").as_bit());
219 SigBit Q
= sigmap(cell
->getPort("\\Q").as_bit());
220 unused_bits
.erase(D
);
221 undriven_bits
.erase(Q
);
223 auto r
YS_ATTRIBUTE(unused
) = ff_bits
.insert(std::make_pair(D
, cell
));
224 log_assert(r
.second
);
229 bool abc9_flop
= false;
230 auto it
= cell
->attributes
.find("\\abc9_box_seq");
231 if (it
!= cell
->attributes
.end()) {
232 int abc9_box_seq
= it
->second
.as_int();
233 if (GetSize(box_list
) <= abc9_box_seq
)
234 box_list
.resize(abc9_box_seq
+1);
235 box_list
[abc9_box_seq
] = cell
;
236 // Only flop boxes may have arrival times
237 abc9_flop
= inst_module
->get_bool_attribute("\\abc9_flop");
242 auto &cell_arrivals
= arrival_cache
[cell
->type
];
243 for (const auto &conn
: cell
->connections()) {
244 auto r
= cell_arrivals
.insert(conn
.first
);
245 auto &arrival
= r
.first
->second
;
247 auto port_wire
= inst_module
->wire(conn
.first
);
248 if (port_wire
->port_output
) {
249 auto it
= port_wire
->attributes
.find("\\abc9_arrival");
250 if (it
!= port_wire
->attributes
.end()) {
251 if (it
->second
.flags
!= 0)
252 log_error("Attribute 'abc9_arrival' on port '%s' of module '%s' is not an integer.\n", log_id(port_wire
), log_id(cell
->type
));
253 arrival
= it
->second
.as_int();
258 for (auto bit
: sigmap(conn
.second
))
259 arrival_times
[bit
] = arrival
;
267 bool cell_known
= inst_module
|| cell
->known();
268 for (const auto &c
: cell
->connections()) {
269 if (c
.second
.is_fully_const()) continue;
270 auto port_wire
= inst_module
? inst_module
->wire(c
.first
) : nullptr;
271 auto is_input
= (port_wire
&& port_wire
->port_input
) || !cell_known
|| cell
->input(c
.first
);
272 auto is_output
= (port_wire
&& port_wire
->port_output
) || !cell_known
|| cell
->output(c
.first
);
273 if (!is_input
&& !is_output
)
274 log_error("Connection '%s' on cell '%s' (type '%s') not recognised!\n", log_id(c
.first
), log_id(cell
), log_id(cell
->type
));
277 for (auto b
: c
.second
) {
280 // Do not add as PO if bit is already a PI
281 if (input_bits
.count(b
))
283 if (!w
->port_output
|| !cell_known
) {
284 SigBit I
= sigmap(b
);
287 output_bits
.insert(b
);
292 //log_warning("Unsupported cell type: %s (%s)\n", log_id(cell->type), log_id(cell));
295 dict
<IdString
, std::vector
<IdString
>> box_ports
;
296 for (auto cell
: box_list
) {
299 RTLIL::Module
* box_module
= module
->design
->module(cell
->type
);
300 log_assert(box_module
);
301 log_assert(box_module
->attributes
.count("\\abc9_box_id"));
303 auto r
= box_ports
.insert(cell
->type
);
305 // Make carry in the last PI, and carry out the last PO
306 // since ABC requires it this way
307 IdString carry_in
, carry_out
;
308 for (const auto &port_name
: box_module
->ports
) {
309 auto w
= box_module
->wire(port_name
);
311 if (w
->get_bool_attribute("\\abc9_carry")) {
313 if (carry_in
!= IdString())
314 log_error("Module '%s' contains more than one 'abc9_carry' input port.\n", log_id(box_module
));
315 carry_in
= port_name
;
317 if (w
->port_output
) {
318 if (carry_out
!= IdString())
319 log_error("Module '%s' contains more than one 'abc9_carry' output port.\n", log_id(box_module
));
320 carry_out
= port_name
;
324 r
.first
->second
.push_back(port_name
);
327 if (carry_in
!= IdString() && carry_out
== IdString())
328 log_error("Module '%s' contains an 'abc9_carry' input port but no output port.\n", log_id(box_module
));
329 if (carry_in
== IdString() && carry_out
!= IdString())
330 log_error("Module '%s' contains an 'abc9_carry' output port but no input port.\n", log_id(box_module
));
331 if (carry_in
!= IdString()) {
332 r
.first
->second
.push_back(carry_in
);
333 r
.first
->second
.push_back(carry_out
);
337 for (auto port_name
: r
.first
->second
) {
338 auto w
= box_module
->wire(port_name
);
340 auto rhs
= cell
->connections_
.at(port_name
, SigSpec());
341 rhs
.append(Const(State::Sx
, GetSize(w
)-GetSize(rhs
)));
344 SigBit I
= sigmap(b
);
349 alias_map
[b
] = State::S0
;
353 co_bits
.emplace_back(b
);
354 unused_bits
.erase(I
);
357 for (const auto &b
: rhs
) {
358 SigBit O
= sigmap(b
);
361 ci_bits
.emplace_back(b
);
362 undriven_bits
.erase(O
);
363 // If PI and CI, then must be a (* keep *) wire
364 if (input_bits
.erase(O
)) {
365 log_assert(output_bits
.count(O
));
366 log_assert(O
.wire
->get_bool_attribute(ID::keep
));
371 // Connect <cell>.abc9_ff.Q (inserted by abc9_map.v) as the last input to the flop box
372 if (box_module
->get_bool_attribute("\\abc9_flop")) {
373 SigSpec rhs
= module
->wire(stringf("%s.abc9_ff.Q", cell
->name
.c_str()));
375 log_error("'%s.abc9_ff.Q' is not a wire present in module '%s'.\n", log_id(cell
), log_id(module
));
378 SigBit I
= sigmap(b
);
383 alias_map
[b
] = State::S0
;
387 co_bits
.emplace_back(b
);
388 unused_bits
.erase(I
);
393 for (auto bit
: input_bits
)
394 undriven_bits
.erase(bit
);
395 for (auto bit
: output_bits
)
396 unused_bits
.erase(sigmap(bit
));
397 for (auto bit
: unused_bits
)
398 undriven_bits
.erase(bit
);
400 // Make all undriven bits a primary input
401 for (auto bit
: undriven_bits
) {
402 input_bits
.insert(bit
);
403 undriven_bits
.erase(bit
);
407 struct sort_by_port_id
{
408 bool operator()(const RTLIL::SigBit
& a
, const RTLIL::SigBit
& b
) const {
409 return a
.wire
->port_id
< b
.wire
->port_id
||
410 (a
.wire
->port_id
== b
.wire
->port_id
&& a
.offset
< b
.offset
);
413 input_bits
.sort(sort_by_port_id());
414 output_bits
.sort(sort_by_port_id());
417 aig_map
[State::S0
] = 0;
418 aig_map
[State::S1
] = 1;
420 for (const auto &bit
: input_bits
) {
422 log_assert(!aig_map
.count(bit
));
423 aig_map
[bit
] = 2*aig_m
;
426 for (const auto &i
: ff_bits
) {
427 const Cell
*cell
= i
.second
;
428 const SigBit
&q
= sigmap(cell
->getPort("\\Q"));
430 log_assert(!aig_map
.count(q
));
431 aig_map
[q
] = 2*aig_m
;
434 for (auto &bit
: ci_bits
) {
436 // 1'bx may exist here due to a box output
437 // that has been padded to its full width
438 if (bit
== State::Sx
)
440 log_assert(!aig_map
.count(bit
));
441 aig_map
[bit
] = 2*aig_m
;
444 for (auto bit
: co_bits
) {
445 ordered_outputs
[bit
] = aig_o
++;
446 aig_outputs
.push_back(bit2aig(bit
));
449 for (const auto &bit
: output_bits
) {
450 ordered_outputs
[bit
] = aig_o
++;
452 // Unlike bit2aig() which checks aig_map first, for
453 // inout/keep bits, since aig_map will point to
454 // the PI, first attempt to find the NOT/AND driver
455 // before resorting to an aig_map lookup (which
456 // could be another PO)
457 if (input_bits
.count(bit
)) {
458 if (not_map
.count(bit
)) {
459 aig
= bit2aig(not_map
.at(bit
)) ^ 1;
460 } else if (and_map
.count(bit
)) {
461 auto args
= and_map
.at(bit
);
462 int a0
= bit2aig(args
.first
);
463 int a1
= bit2aig(args
.second
);
464 aig
= mkgate(a0
, a1
);
467 aig
= aig_map
.at(bit
);
471 aig_outputs
.push_back(aig
);
474 for (auto &i
: ff_bits
) {
475 const SigBit
&d
= i
.first
;
477 aig_outputs
.push_back(aig_map
.at(d
));
481 void write_aiger(std::ostream
&f
, bool ascii_mode
)
484 int aig_obcj
= aig_obc
;
485 int aig_obcjf
= aig_obcj
;
487 log_assert(aig_m
== aig_i
+ aig_l
+ aig_a
);
488 log_assert(aig_obcjf
== GetSize(aig_outputs
));
490 f
<< stringf("%s %d %d %d %d %d", ascii_mode
? "aag" : "aig", aig_m
, aig_i
, aig_l
, aig_o
, aig_a
);
495 for (int i
= 0; i
< aig_i
; i
++)
496 f
<< stringf("%d\n", 2*i
+2);
498 for (int i
= 0; i
< aig_obc
; i
++)
499 f
<< stringf("%d\n", aig_outputs
.at(i
));
501 for (int i
= aig_obc
; i
< aig_obcj
; i
++)
504 for (int i
= aig_obc
; i
< aig_obcj
; i
++)
505 f
<< stringf("%d\n", aig_outputs
.at(i
));
507 for (int i
= aig_obcj
; i
< aig_obcjf
; i
++)
508 f
<< stringf("%d\n", aig_outputs
.at(i
));
510 for (int i
= 0; i
< aig_a
; i
++)
511 f
<< stringf("%d %d %d\n", 2*(aig_i
+aig_l
+i
)+2, aig_gates
.at(i
).first
, aig_gates
.at(i
).second
);
515 for (int i
= 0; i
< aig_obc
; i
++)
516 f
<< stringf("%d\n", aig_outputs
.at(i
));
518 for (int i
= aig_obc
; i
< aig_obcj
; i
++)
521 for (int i
= aig_obc
; i
< aig_obcj
; i
++)
522 f
<< stringf("%d\n", aig_outputs
.at(i
));
524 for (int i
= aig_obcj
; i
< aig_obcjf
; i
++)
525 f
<< stringf("%d\n", aig_outputs
.at(i
));
527 for (int i
= 0; i
< aig_a
; i
++) {
528 int lhs
= 2*(aig_i
+aig_l
+i
)+2;
529 int rhs0
= aig_gates
.at(i
).first
;
530 int rhs1
= aig_gates
.at(i
).second
;
531 int delta0
= lhs
- rhs0
;
532 int delta1
= rhs0
- rhs1
;
533 aiger_encode(f
, delta0
);
534 aiger_encode(f
, delta1
);
540 auto write_buffer
= [](std::stringstream
&buffer
, int i32
) {
541 int32_t i32_be
= to_big_endian(i32
);
542 buffer
.write(reinterpret_cast<const char*>(&i32_be
), sizeof(i32_be
));
544 std::stringstream h_buffer
;
545 auto write_h_buffer
= std::bind(write_buffer
, std::ref(h_buffer
), std::placeholders::_1
);
547 log_debug("ciNum = %d\n", GetSize(input_bits
) + GetSize(ff_bits
) + GetSize(ci_bits
));
548 write_h_buffer(input_bits
.size() + ff_bits
.size() + ci_bits
.size());
549 log_debug("coNum = %d\n", GetSize(output_bits
) + GetSize(ff_bits
) + GetSize(co_bits
));
550 write_h_buffer(output_bits
.size() + GetSize(ff_bits
) + GetSize(co_bits
));
551 log_debug("piNum = %d\n", GetSize(input_bits
) + GetSize(ff_bits
));
552 write_h_buffer(input_bits
.size() + ff_bits
.size());
553 log_debug("poNum = %d\n", GetSize(output_bits
) + GetSize(ff_bits
));
554 write_h_buffer(output_bits
.size() + ff_bits
.size());
555 log_debug("boxNum = %d\n", GetSize(box_list
));
556 write_h_buffer(box_list
.size());
558 auto write_buffer_float
= [](std::stringstream
&buffer
, float f32
) {
559 buffer
.write(reinterpret_cast<const char*>(&f32
), sizeof(f32
));
561 std::stringstream i_buffer
;
562 auto write_i_buffer
= std::bind(write_buffer_float
, std::ref(i_buffer
), std::placeholders::_1
);
563 for (auto bit
: input_bits
)
564 write_i_buffer(arrival_times
.at(bit
, 0));
565 //std::stringstream o_buffer;
566 //auto write_o_buffer = std::bind(write_buffer_float, std::ref(o_buffer), std::placeholders::_1);
567 //for (auto bit : output_bits)
568 // write_o_buffer(0);
570 if (!box_list
.empty() || !ff_bits
.empty()) {
571 RTLIL::Module
*holes_module
= module
->design
->module(stringf("%s$holes", module
->name
.c_str()));
572 log_assert(holes_module
);
574 dict
<IdString
, std::tuple
<int,int,int>> cell_cache
;
577 for (auto cell
: box_list
) {
580 RTLIL::Module
* box_module
= module
->design
->module(cell
->type
);
581 log_assert(box_module
);
583 auto r
= cell_cache
.insert(cell
->type
);
584 auto &v
= r
.first
->second
;
586 int box_inputs
= 0, box_outputs
= 0;
587 for (auto port_name
: box_module
->ports
) {
588 RTLIL::Wire
*w
= box_module
->wire(port_name
);
591 box_inputs
+= GetSize(w
);
593 box_outputs
+= GetSize(w
);
596 // For flops only, create an extra 1-bit input that drives a new wire
597 // called "<cell>.abc9_ff.Q" that is used below
598 if (box_module
->get_bool_attribute("\\abc9_flop"))
601 std::get
<0>(v
) = box_inputs
;
602 std::get
<1>(v
) = box_outputs
;
603 std::get
<2>(v
) = box_module
->attributes
.at("\\abc9_box_id").as_int();
606 write_h_buffer(std::get
<0>(v
));
607 write_h_buffer(std::get
<1>(v
));
608 write_h_buffer(std::get
<2>(v
));
609 write_h_buffer(box_count
++);
612 std::stringstream r_buffer
;
613 auto write_r_buffer
= std::bind(write_buffer
, std::ref(r_buffer
), std::placeholders::_1
);
614 log_debug("flopNum = %d\n", GetSize(ff_bits
));
615 write_r_buffer(ff_bits
.size());
617 std::stringstream s_buffer
;
618 auto write_s_buffer
= std::bind(write_buffer
, std::ref(s_buffer
), std::placeholders::_1
);
619 write_s_buffer(ff_bits
.size());
621 for (const auto &i
: ff_bits
) {
622 const SigBit
&d
= i
.first
;
623 const Cell
*cell
= i
.second
;
625 int mergeability
= cell
->attributes
.at(ID(abc9_mergeability
)).as_int();
626 log_assert(mergeability
> 0);
627 write_r_buffer(mergeability
);
629 Const init
= cell
->attributes
.at(ID(abc9_init
));
630 log_assert(GetSize(init
) == 1);
631 if (init
== State::S1
)
633 else if (init
== State::S0
)
636 log_assert(init
== State::Sx
);
640 write_i_buffer(arrival_times
.at(d
, 0));
645 std::string buffer_str
= r_buffer
.str();
646 int32_t buffer_size_be
= to_big_endian(buffer_str
.size());
647 f
.write(reinterpret_cast<const char*>(&buffer_size_be
), sizeof(buffer_size_be
));
648 f
.write(buffer_str
.data(), buffer_str
.size());
651 buffer_str
= s_buffer
.str();
652 buffer_size_be
= to_big_endian(buffer_str
.size());
653 f
.write(reinterpret_cast<const char*>(&buffer_size_be
), sizeof(buffer_size_be
));
654 f
.write(buffer_str
.data(), buffer_str
.size());
657 std::stringstream a_buffer
;
658 XAigerWriter
writer(holes_module
, true /* holes_mode */);
659 writer
.write_aiger(a_buffer
, false /*ascii_mode*/);
662 std::string buffer_str
= a_buffer
.str();
663 int32_t buffer_size_be
= to_big_endian(buffer_str
.size());
664 f
.write(reinterpret_cast<const char*>(&buffer_size_be
), sizeof(buffer_size_be
));
665 f
.write(buffer_str
.data(), buffer_str
.size());
670 std::string buffer_str
= h_buffer
.str();
671 int32_t buffer_size_be
= to_big_endian(buffer_str
.size());
672 f
.write(reinterpret_cast<const char*>(&buffer_size_be
), sizeof(buffer_size_be
));
673 f
.write(buffer_str
.data(), buffer_str
.size());
676 buffer_str
= i_buffer
.str();
677 buffer_size_be
= to_big_endian(buffer_str
.size());
678 f
.write(reinterpret_cast<const char*>(&buffer_size_be
), sizeof(buffer_size_be
));
679 f
.write(buffer_str
.data(), buffer_str
.size());
681 //buffer_str = o_buffer.str();
682 //buffer_size_be = to_big_endian(buffer_str.size());
683 //f.write(reinterpret_cast<const char*>(&buffer_size_be), sizeof(buffer_size_be));
684 //f.write(buffer_str.data(), buffer_str.size());
686 f
<< stringf("Generated by %s\n", yosys_version_str
);
688 module
->design
->scratchpad_set_int("write_xaiger.num_ands", and_map
.size());
689 module
->design
->scratchpad_set_int("write_xaiger.num_wires", aig_map
.size());
690 module
->design
->scratchpad_set_int("write_xaiger.num_inputs", input_bits
.size());
691 module
->design
->scratchpad_set_int("write_xaiger.num_outputs", output_bits
.size());
694 void write_map(std::ostream
&f
)
696 dict
<int, string
> input_lines
;
697 dict
<int, string
> output_lines
;
699 for (auto wire
: module
->wires())
701 SigSpec sig
= sigmap(wire
);
703 for (int i
= 0; i
< GetSize(wire
); i
++)
705 RTLIL::SigBit
b(wire
, i
);
706 if (input_bits
.count(b
)) {
707 int a
= aig_map
.at(b
);
708 log_assert((a
& 1) == 0);
709 input_lines
[a
] += stringf("input %d %d %s\n", (a
>> 1)-1, i
, log_id(wire
));
712 if (output_bits
.count(b
)) {
713 int o
= ordered_outputs
.at(b
);
715 output_lines
[o
] += stringf("output %d %d %s %d\n", o
- GetSize(co_bits
), i
, log_id(wire
), init
);
722 for (auto &it
: input_lines
)
724 log_assert(input_lines
.size() == input_bits
.size());
727 for (auto cell
: box_list
)
728 f
<< stringf("box %d %d %s\n", box_count
++, 0, log_id(cell
->name
));
731 for (auto &it
: output_lines
)
733 log_assert(output_lines
.size() == output_bits
.size());
737 struct XAigerBackend
: public Backend
{
738 XAigerBackend() : Backend("xaiger", "write design to XAIGER file") { }
739 void help() YS_OVERRIDE
741 // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
743 log(" write_xaiger [options] [filename]\n");
745 log("Write the top module (according to the (* top *) attribute or if only one module\n");
746 log("is currently selected) to an XAIGER file. Any non $_NOT_, $_AND_, $_ABC9_FF_, or");
747 log("non (* abc9_box_id *) cells will be converted into psuedo-inputs and\n");
748 log("pseudo-outputs. Whitebox contents will be taken from the '<module-name>$holes'\n");
749 log("module, if it exists.\n");
752 log(" write ASCII version of AIGER format\n");
754 log(" -map <filename>\n");
755 log(" write an extra file with port and box symbols\n");
758 void execute(std::ostream
*&f
, std::string filename
, std::vector
<std::string
> args
, RTLIL::Design
*design
) YS_OVERRIDE
760 bool ascii_mode
= false;
761 std::string map_filename
;
763 log_header(design
, "Executing XAIGER backend.\n");
766 for (argidx
= 1; argidx
< args
.size(); argidx
++)
768 if (args
[argidx
] == "-ascii") {
772 if (map_filename
.empty() && args
[argidx
] == "-map" && argidx
+1 < args
.size()) {
773 map_filename
= args
[++argidx
];
778 extra_args(f
, filename
, args
, argidx
, !ascii_mode
);
780 Module
*top_module
= design
->top_module();
782 if (top_module
== nullptr)
783 log_error("Can't find top module in current design!\n");
785 if (!design
->selected_whole_module(top_module
))
786 log_cmd_error("Can't handle partially selected module %s!\n", log_id(top_module
));
788 if (!top_module
->processes
.empty())
789 log_error("Found unmapped processes in module %s: unmapped processes are not supported in XAIGER backend!\n", log_id(top_module
));
790 if (!top_module
->memories
.empty())
791 log_error("Found unmapped memories in module %s: unmapped memories are not supported in XAIGER backend!\n", log_id(top_module
));
793 XAigerWriter
writer(top_module
);
794 writer
.write_aiger(*f
, ascii_mode
);
796 if (!map_filename
.empty()) {
798 mapf
.open(map_filename
.c_str(), std::ofstream::trunc
);
800 log_error("Can't open file `%s' for writing: %s\n", map_filename
.c_str(), strerror(errno
));
801 writer
.write_map(mapf
);
806 PRIVATE_NAMESPACE_END