riscv
/
yosys
mirror of https://github.com/YosysHQ/yosys.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Add BLIF parsing support for .conn and .cname

This commit is contained in:
litghost 2018-08-02 14:33:39 -07:00
parent e275692e84
commit f42d6a9c93
1 changed files with 30 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
frontends/blif/blifparse.cc
View File

@ -83,6 +83,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
RTLIL::Module *module = nullptr; RTLIL::Module *module = nullptr;
RTLIL::Const *lutptr = NULL; RTLIL::Const *lutptr = NULL;
RTLIL::Cell *sopcell = NULL; RTLIL::Cell *sopcell = NULL;
RTLIL::Cell *lastcell = nullptr;
RTLIL::State lut_default_state = RTLIL::State::Sx; RTLIL::State lut_default_state = RTLIL::State::Sx;
int blif_maxnum = 0, sopmode = -1; int blif_maxnum = 0, sopmode = -1;
@ -159,6 +160,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
if (module != nullptr) if (module != nullptr)
goto error; goto error;
module = new RTLIL::Module; module = new RTLIL::Module;
lastcell = nullptr;
module->name = RTLIL::escape_id(strtok(NULL, " \t\r\n")); module->name = RTLIL::escape_id(strtok(NULL, " \t\r\n"));
obj_attributes = &module->attributes; obj_attributes = &module->attributes;
obj_parameters = nullptr; obj_parameters = nullptr;
@ -232,6 +234,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
} }
module = nullptr; module = nullptr;
lastcell = nullptr;
obj_attributes = nullptr; obj_attributes = nullptr;
obj_parameters = nullptr; obj_parameters = nullptr;
continue; continue;
@ -264,6 +267,22 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
continue; continue;
} }
if (!strcmp(cmd, ".cname"))
{
char *p = strtok(NULL, " \t\r\n");
if (p == NULL)
goto error;
if(lastcell == nullptr || module == nullptr)
{
log_error("No primative object to attach .cname %s.\n", p);
goto error;
}
module->rename(lastcell, p);
continue;
}
if (!strcmp(cmd, ".attr") || !strcmp(cmd, ".param")) { if (!strcmp(cmd, ".attr") || !strcmp(cmd, ".param")) {
char *n = strtok(NULL, " \t\r\n"); char *n = strtok(NULL, " \t\r\n");
char *v = strtok(NULL, "\r\n"); char *v = strtok(NULL, "\r\n");
@ -281,12 +300,16 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
const_v.bits[i] = v[n-i-1] != '0' ? State::S1 : State::S0; const_v.bits[i] = v[n-i-1] != '0' ? State::S1 : State::S0;
} }
if (!strcmp(cmd, ".attr")) { if (!strcmp(cmd, ".attr")) {
if (obj_attributes == nullptr) if (obj_attributes == nullptr) {
log_error("No object to attach .attr too.\n");
goto error; goto error;
}
(*obj_attributes)[id_n] = const_v; (*obj_attributes)[id_n] = const_v;
} else { } else {
if (obj_parameters == nullptr) if (obj_parameters == nullptr) {
log_error("No object to attach .param too.\n");
goto error; goto error;
}
(*obj_parameters)[id_n] = const_v; (*obj_parameters)[id_n] = const_v;
} }
continue; continue;
@ -331,6 +354,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
} }
} }
lastcell = cell;
obj_attributes = &cell->attributes; obj_attributes = &cell->attributes;
obj_parameters = &cell->parameters; obj_parameters = &cell->parameters;
continue; continue;
@ -383,6 +407,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
cell->setPort(it.first, sig); cell->setPort(it.first, sig);
} }
lastcell = cell;
obj_attributes = &cell->attributes; obj_attributes = &cell->attributes;
obj_parameters = &cell->parameters; obj_parameters = &cell->parameters;
continue; continue;
@ -391,7 +416,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
obj_attributes = nullptr; obj_attributes = nullptr;
obj_parameters = nullptr; obj_parameters = nullptr;
if (!strcmp(cmd, ".barbuf")) if (!strcmp(cmd, ".barbuf") || !strcmp(cmd, ".conn"))
{ {
char *p = strtok(NULL, " \t\r\n"); char *p = strtok(NULL, " \t\r\n");
if (p == NULL) if (p == NULL)
@ -459,6 +484,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
sopcell->setPort("\\A", input_sig); sopcell->setPort("\\A", input_sig);
sopcell->setPort("\\Y", output_sig); sopcell->setPort("\\Y", output_sig);
sopmode = -1; sopmode = -1;
lastcell = sopcell;
} }
else else
{ {
@ -469,6 +495,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name, bo
cell->setPort("\\Y", output_sig); cell->setPort("\\Y", output_sig);
lutptr = &cell->parameters.at("\\LUT"); lutptr = &cell->parameters.at("\\LUT");
lut_default_state = RTLIL::State::Sx; lut_default_state = RTLIL::State::Sx;
lastcell = cell;
} }
continue; continue;
} }