From 82aaf6d9086176c746bb157f33fd085a2e03e461 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Mon, 12 Nov 2018 09:27:33 +0100
Subject: [PATCH] Add "write_aiger -I -O -B"
Signed-off-by: Clifford Wolf <clifford@clifford.at>
---
backends/aiger/aiger.cc | 38 ++++++++++++++++++++++++++++++++++++--
1 file changed, 36 insertions(+), 2 deletions(-)
diff --git a/backends/aiger/aiger.cc b/backends/aiger/aiger.cc
index c323691a3..dfe506c66 100644
--- a/backends/aiger/aiger.cc
+++ b/backends/aiger/aiger.cc
@@ -100,7 +100,7 @@ struct AigerWriter
return aig_map.at(bit);
}
- AigerWriter(Module *module, bool zinit_mode) : module(module), zinit_mode(zinit_mode), sigmap(module)
+ AigerWriter(Module *module, bool zinit_mode, bool imode, bool omode, bool bmode) : module(module), zinit_mode(zinit_mode), sigmap(module)
{
pool<SigBit> undriven_bits;
pool<SigBit> unused_bits;
@@ -293,6 +293,10 @@ struct AigerWriter
aig_map[bit] = 2*aig_m;
}
+ if (imode && input_bits.empty()) {
+ aig_m++, aig_i++;
+ }
+
if (zinit_mode)
{
for (auto it : ff_map) {
@@ -371,6 +375,11 @@ struct AigerWriter
aig_outputs.push_back(bit2aig(bit));
}
+ if (omode && output_bits.empty()) {
+ aig_o++;
+ aig_outputs.push_back(0);
+ }
+
for (auto it : asserts) {
aig_b++;
int bit_a = bit2aig(it.first);
@@ -378,6 +387,11 @@ struct AigerWriter
aig_outputs.push_back(mkgate(bit_a^1, bit_en));
}
+ if (bmode && asserts.empty()) {
+ aig_b++;
+ aig_outputs.push_back(0);
+ }
+
for (auto it : assumes) {
aig_c++;
int bit_a = bit2aig(it.first);
@@ -689,6 +703,11 @@ struct AigerBackend : public Backend {
log(" -vmap <filename>\n");
log(" like -map, but more verbose\n");
log("\n");
+ log(" -I, -O, -B\n");
+ log(" If the design contains no input/output/assert then create one\n");
+ log(" dummy input/output/bad_state pin to make the tools reading the\n");
+ log(" AIGER file happy.\n");
+ log("\n");
}
void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
{
@@ -697,6 +716,9 @@ struct AigerBackend : public Backend {
bool miter_mode = false;
bool symbols_mode = false;
bool verbose_map = false;
+ bool imode = false;
+ bool omode = false;
+ bool bmode = false;
std::string map_filename;
log_header(design, "Executing AIGER backend.\n");
@@ -729,6 +751,18 @@ struct AigerBackend : public Backend {
verbose_map = true;
continue;
}
+ if (args[argidx] == "-I") {
+ imode = true;
+ continue;
+ }
+ if (args[argidx] == "-O") {
+ omode = true;
+ continue;
+ }
+ if (args[argidx] == "-B") {
+ bmode = true;
+ continue;
+ }
break;
}
extra_args(f, filename, args, argidx);
@@ -738,7 +772,7 @@ struct AigerBackend : public Backend {
if (top_module == nullptr)
log_error("Can't find top module in current design!\n");
- AigerWriter writer(top_module, zinit_mode);
+ AigerWriter writer(top_module, zinit_mode, imode, omode, bmode);
writer.write_aiger(*f, ascii_mode, miter_mode, symbols_mode);
if (!map_filename.empty()) {