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Add "setundef -anyconst" 

Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2018-06-01 11:49:58 +02:00
parent 3ab79a231b
commit 4cd6d5556a
1 changed files with 41 additions and 20 deletions
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61
passes/cmds/setundef.cc
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@ -23,6 +23,13 @@
#include "kernel/rtlil.h"
#include "kernel/log.h"
#define MODE_ZERO 0
#define MODE_ONE 1
#define MODE_UNDEF 2
#define MODE_RANDOM 3
#define MODE_ANYSEQ 4
#define MODE_ANYCONST 5
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
@ -34,30 +41,32 @@ struct SetundefWorker
RTLIL::State next_bit()
{
if (next_bit_mode == 0)
if (next_bit_mode == MODE_ZERO)
return RTLIL::State::S0;
if (next_bit_mode == 1)
if (next_bit_mode == MODE_ONE)
return RTLIL::State::S1;
if (next_bit_mode == 2)
log_abort();
if (next_bit_mode == 4)
if (next_bit_mode == MODE_UNDEF)
return RTLIL::State::Sx;
// xorshift32
next_bit_state ^= next_bit_state << 13;
next_bit_state ^= next_bit_state >> 17;
next_bit_state ^= next_bit_state << 5;
log_assert(next_bit_state != 0);
if (next_bit_mode == MODE_RANDOM)
{
// xorshift32
next_bit_state ^= next_bit_state << 13;
next_bit_state ^= next_bit_state >> 17;
next_bit_state ^= next_bit_state << 5;
log_assert(next_bit_state != 0);
return ((next_bit_state >> (next_bit_state & 15)) & 16) ? RTLIL::State::S0 : RTLIL::State::S1;
return ((next_bit_state >> (next_bit_state & 15)) & 16) ? RTLIL::State::S0 : RTLIL::State::S1;
}
log_abort();
}
void operator()(RTLIL::SigSpec &sig)
{
if (next_bit_mode == 2) {
if (next_bit_mode == MODE_ANYSEQ || next_bit_mode == MODE_ANYCONST) {
siglist.push_back(&sig);
return;
}
@ -93,6 +102,9 @@ struct SetundefPass : public Pass {
log(" -anyseq\n");
log(" replace with $anyseq drivers (for formal)\n");
log("\n");
log(" -anyconst\n");
log(" replace with $anyconst drivers (for formal)\n");
log("\n");
log(" -random <seed>\n");
log(" replace with random bits using the specified integer als seed\n");
log(" value for the random number generator.\n");
@ -119,25 +131,31 @@ struct SetundefPass : public Pass {
}
if (args[argidx] == "-zero") {
got_value = true;
worker.next_bit_mode = 0;
worker.next_bit_mode = MODE_ZERO;
worker.next_bit_state = 0;
continue;
}
if (args[argidx] == "-one") {
got_value = true;
worker.next_bit_mode = 1;
worker.next_bit_mode = MODE_ONE;
worker.next_bit_state = 0;
continue;
}
if (args[argidx] == "-anyseq") {
got_value = true;
worker.next_bit_mode = 2;
worker.next_bit_mode = MODE_ANYSEQ;
worker.next_bit_state = 0;
continue;
}
if (args[argidx] == "-anyconst") {
got_value = true;
worker.next_bit_mode = MODE_ANYCONST;
worker.next_bit_state = 0;
continue;
}
if (args[argidx] == "-undef") {
got_value = true;
worker.next_bit_mode = 4;
worker.next_bit_mode = MODE_UNDEF;
worker.next_bit_state = 0;
continue;
}
@ -147,7 +165,7 @@ struct SetundefPass : public Pass {
}
if (args[argidx] == "-random" && !got_value && argidx+1 < args.size()) {
got_value = true;
worker.next_bit_mode = 3;
worker.next_bit_mode = MODE_RANDOM;
worker.next_bit_state = atoi(args[++argidx].c_str()) + 1;
for (int i = 0; i < 10; i++)
worker.next_bit();
@ -274,7 +292,7 @@ struct SetundefPass : public Pass {
module->rewrite_sigspecs(worker);
if (worker.next_bit_mode == 2)
if (worker.next_bit_mode == MODE_ANYSEQ || worker.next_bit_mode == MODE_ANYCONST)
{
vector<SigSpec*> siglist;
siglist.swap(worker.siglist);
@ -291,7 +309,10 @@ struct SetundefPass : public Pass {
width++;
if (width > 0) {
sig.replace(cursor, module->Anyseq(NEW_ID, width));
if (worker.next_bit_mode == MODE_ANYSEQ)
sig.replace(cursor, module->Anyseq(NEW_ID, width));
else
sig.replace(cursor, module->Anyconst(NEW_ID, width));
cursor += width;
} else {
cursor++;