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Coding style corrections in SatHelper::dump_model_to_vcd()

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This commit is contained in:
Clifford Wolf 2014-02-18 09:28:05 +01:00
parent 61a2bf57b4
commit 32af10fa9b
1 changed files with 31 additions and 31 deletions
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62
passes/sat/sat.cc
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@ -632,27 +632,27 @@ struct SatHelper
if (last_timestep == -2) if (last_timestep == -2)
log(" no model variables selected for display.\n"); log(" no model variables selected for display.\n");
} }
void dump_model_to_vcd(std::string vcd_file_name) void dump_model_to_vcd(std::string vcd_file_name)
{ {
FILE* f = fopen(vcd_file_name.c_str(), "w"); FILE *f = fopen(vcd_file_name.c_str(), "w");
if(!f) if (!f)
log_cmd_error("Can't open output file `%s' for writing: %s\n", vcd_file_name.c_str(), strerror(errno)); log_cmd_error("Can't open output file `%s' for writing: %s\n", vcd_file_name.c_str(), strerror(errno));
log("Dumping SAT model to VCD file %s\n", vcd_file_name.c_str()); log("Dumping SAT model to VCD file %s\n", vcd_file_name.c_str());
time_t timestamp; time_t timestamp;
struct tm* now; struct tm* now;
char stime[128] = {0}; char stime[128] = {};
time(&timestamp); time(&timestamp);
now = localtime(&timestamp); now = localtime(&timestamp);
strftime(stime, sizeof(stime), "%c", now); strftime(stime, sizeof(stime), "%c", now);
std::string module_fname = "unknown"; std::string module_fname = "unknown";
auto apos = module->attributes.find("\\src"); auto apos = module->attributes.find("\\src");
if(apos != module->attributes.end()) if(apos != module->attributes.end())
module_fname = module->attributes["\\src"].decode_string(); module_fname = module->attributes["\\src"].decode_string();
fprintf(f, "$date\n"); fprintf(f, "$date\n");
fprintf(f, " %s\n", stime); fprintf(f, " %s\n", stime);
fprintf(f, "$end\n"); fprintf(f, "$end\n");
@ -663,21 +663,22 @@ struct SatHelper
fprintf(f, " Generated from SAT problem in module %s (declared at %s)\n", fprintf(f, " Generated from SAT problem in module %s (declared at %s)\n",
module->name.c_str(), module_fname.c_str()); module->name.c_str(), module_fname.c_str());
fprintf(f, "$end\n"); fprintf(f, "$end\n");
//VCD has some limits on internal (non-display) identifier names, so make legal ones // VCD has some limits on internal (non-display) identifier names, so make legal ones
std::map<std::string, std::string> vcdnames; std::map<std::string, std::string> vcdnames;
fprintf(f, "$timescale 1ns\n"); //arbitrary time scale since actual clock period is unknown/unimportant fprintf(f, "$timescale 1ns\n"); // arbitrary time scale since actual clock period is unknown/unimportant
fprintf(f, "$scope module %s $end\n", module->name.c_str()); fprintf(f, "$scope module %s $end\n", module->name.c_str());
for (auto &info : modelInfo) { for (auto &info : modelInfo)
if(vcdnames.find(info.description) != vcdnames.end()) {
if (vcdnames.find(info.description) != vcdnames.end())
continue; continue;
char namebuf[16]; char namebuf[16];
snprintf(namebuf, sizeof(namebuf), "v%d", static_cast<int>(vcdnames.size())); snprintf(namebuf, sizeof(namebuf), "v%d", static_cast<int>(vcdnames.size()));
vcdnames[info.description] = namebuf; vcdnames[info.description] = namebuf;
//Even display identifiers can't use some special characters // Even display identifiers can't use some special characters
std::string legal_desc = info.description.c_str(); std::string legal_desc = info.description.c_str();
for (auto &c : legal_desc) { for (auto &c : legal_desc) {
if(c == '$') if(c == '$')
@ -685,21 +686,21 @@ struct SatHelper
if(c == ':') if(c == ':')
c = '_'; c = '_';
} }
fprintf(f, "$var wire %d %s %s $end\n", info.width, namebuf, legal_desc.c_str()); fprintf(f, "$var wire %d %s %s $end\n", info.width, namebuf, legal_desc.c_str());
//Need to look at first *two* cycles! // Need to look at first *two* cycles!
//We need to put a name on all variables but those without an initialization clause // We need to put a name on all variables but those without an initialization clause
//have no value at timestep 0 // have no value at timestep 0
if(info.timestep > 1) if(info.timestep > 1)
break; break;
} }
fprintf(f, "$upscope $end\n"); fprintf(f, "$upscope $end\n");
fprintf(f, "$enddefinitions $end\n"); fprintf(f, "$enddefinitions $end\n");
fprintf(f, "$dumpvars\n"); fprintf(f, "$dumpvars\n");
static const char bitvals[] = "01xzxx"; static const char bitvals[] = "01xzxx";
int last_timestep = -2; int last_timestep = -2;
for (auto &info : modelInfo) for (auto &info : modelInfo)
{ {
@ -710,19 +711,18 @@ struct SatHelper
if (enable_undef && modelValues.at(modelExpressions.size()/2 + info.offset + i)) if (enable_undef && modelValues.at(modelExpressions.size()/2 + info.offset + i))
value.bits.back() = RTLIL::State::Sx; value.bits.back() = RTLIL::State::Sx;
} }
if (info.timestep != last_timestep) { if (info.timestep != last_timestep) {
if(last_timestep == 0) if(last_timestep == 0)
fprintf(f, "$end\n"); fprintf(f, "$end\n");
else else
fprintf(f, "#%d\n", info.timestep); fprintf(f, "#%d\n", info.timestep);
last_timestep = info.timestep; last_timestep = info.timestep;
} }
if(info.width == 1) if(info.width == 1) {
fprintf(f, "%c%s\n", bitvals[value.bits[0]], vcdnames[info.description].c_str()); fprintf(f, "%c%s\n", bitvals[value.bits[0]], vcdnames[info.description].c_str());
else { } else {
fprintf(f, "b"); fprintf(f, "b");
for(int k=info.width-1; k >= 0; k --) //need to flip bit ordering for VCD for(int k=info.width-1; k >= 0; k --) //need to flip bit ordering for VCD
fprintf(f, "%c", bitvals[value.bits[k]]); fprintf(f, "%c", bitvals[value.bits[k]]);
@ -732,7 +732,7 @@ struct SatHelper
if (last_timestep == -2) if (last_timestep == -2)
log(" no model variables selected for display.\n"); log(" no model variables selected for display.\n");
fclose(f); fclose(f);
} }