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Add "setundef -anyconst"

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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/rtlil.h"
#include "kernel/log.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 USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN PRIVATE_NAMESPACE_BEGIN
@ -34,30 +41,32 @@ struct SetundefWorker
RTLIL::State next_bit() RTLIL::State next_bit()
{ {
if (next_bit_mode == 0) if (next_bit_mode == MODE_ZERO)
return RTLIL::State::S0; return RTLIL::State::S0;
if (next_bit_mode == 1) if (next_bit_mode == MODE_ONE)
return RTLIL::State::S1; return RTLIL::State::S1;
if (next_bit_mode == 2) if (next_bit_mode == MODE_UNDEF)
log_abort();
if (next_bit_mode == 4)
return RTLIL::State::Sx; return RTLIL::State::Sx;
// xorshift32 if (next_bit_mode == MODE_RANDOM)
next_bit_state ^= next_bit_state << 13; {
next_bit_state ^= next_bit_state >> 17; // xorshift32
next_bit_state ^= next_bit_state << 5; next_bit_state ^= next_bit_state << 13;
log_assert(next_bit_state != 0); 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) 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); siglist.push_back(&sig);
return; return;
} }
@ -93,6 +102,9 @@ struct SetundefPass : public Pass {
log(" -anyseq\n"); log(" -anyseq\n");
log(" replace with $anyseq drivers (for formal)\n"); log(" replace with $anyseq drivers (for formal)\n");
log("\n"); log("\n");
log(" -anyconst\n");
log(" replace with $anyconst drivers (for formal)\n");
log("\n");
log(" -random <seed>\n"); log(" -random <seed>\n");
log(" replace with random bits using the specified integer als seed\n"); log(" replace with random bits using the specified integer als seed\n");
log(" value for the random number generator.\n"); log(" value for the random number generator.\n");
@ -119,25 +131,31 @@ struct SetundefPass : public Pass {
} }
if (args[argidx] == "-zero") { if (args[argidx] == "-zero") {
got_value = true; got_value = true;
worker.next_bit_mode = 0; worker.next_bit_mode = MODE_ZERO;
worker.next_bit_state = 0; worker.next_bit_state = 0;
continue; continue;
} }
if (args[argidx] == "-one") { if (args[argidx] == "-one") {
got_value = true; got_value = true;
worker.next_bit_mode = 1; worker.next_bit_mode = MODE_ONE;
worker.next_bit_state = 0; worker.next_bit_state = 0;
continue; continue;
} }
if (args[argidx] == "-anyseq") { if (args[argidx] == "-anyseq") {
got_value = true; 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; worker.next_bit_state = 0;
continue; continue;
} }
if (args[argidx] == "-undef") { if (args[argidx] == "-undef") {
got_value = true; got_value = true;
worker.next_bit_mode = 4; worker.next_bit_mode = MODE_UNDEF;
worker.next_bit_state = 0; worker.next_bit_state = 0;
continue; continue;
} }
@ -147,7 +165,7 @@ struct SetundefPass : public Pass {
} }
if (args[argidx] == "-random" && !got_value && argidx+1 < args.size()) { if (args[argidx] == "-random" && !got_value && argidx+1 < args.size()) {
got_value = true; got_value = true;
worker.next_bit_mode = 3; worker.next_bit_mode = MODE_RANDOM;
worker.next_bit_state = atoi(args[++argidx].c_str()) + 1; worker.next_bit_state = atoi(args[++argidx].c_str()) + 1;
for (int i = 0; i < 10; i++) for (int i = 0; i < 10; i++)
worker.next_bit(); worker.next_bit();
@ -274,7 +292,7 @@ struct SetundefPass : public Pass {
module->rewrite_sigspecs(worker); 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; vector<SigSpec*> siglist;
siglist.swap(worker.siglist); siglist.swap(worker.siglist);
@ -291,7 +309,10 @@ struct SetundefPass : public Pass {
width++; width++;
if (width > 0) { 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; cursor += width;
} else { } else {
cursor++; cursor++;