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Generalized blifparse API

This commit is contained in:
Clifford Wolf 2015-05-17 15:10:37 +02:00
parent 7dad017c9c
commit e5116eeb77
3 changed files with 31 additions and 21 deletions
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40
frontends/blif/blifparse.cc
View File

@ -21,7 +21,7 @@
YOSYS_NAMESPACE_BEGIN
static bool read_next_line(char *&buffer, size_t &buffer_size, int &line_count, FILE *f)
static bool read_next_line(char *&buffer, size_t &buffer_size, int &line_count, std::istream &f)
{
int buffer_len = 0;
buffer[0] = 0;
@ -42,32 +42,31 @@ static bool read_next_line(char *&buffer, size_t &buffer_size, int &line_count,
if (buffer_len > 0 && buffer[buffer_len-1] == '\\')
buffer[--buffer_len] = 0;
line_count++;
if (fgets(buffer+buffer_len, buffer_size-buffer_len, f) == NULL)
if (!f.getline(buffer+buffer_len, buffer_size-buffer_len))
return false;
} else
return true;
}
}
RTLIL::Design *abc_parse_blif(FILE *f, std::string dff_name)
void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name)
{
RTLIL::Design *design = new RTLIL::Design;
RTLIL::Module *module = new RTLIL::Module;
RTLIL::Module *module = nullptr;
RTLIL::Const *lutptr = NULL;
RTLIL::State lut_default_state = RTLIL::State::Sx;
module->name = "\\netlist";
design->add(module);
size_t buffer_size = 4096;
char *buffer = (char*)malloc(buffer_size);
int line_count = 0;
while (1)
{
if (!read_next_line(buffer, buffer_size, line_count, f))
goto error;
if (!read_next_line(buffer, buffer_size, line_count, f)) {
if (module != nullptr)
goto error;
free(buffer);
return;
}
continue_without_read:
if (buffer[0] == '#')
@ -85,13 +84,24 @@ RTLIL::Design *abc_parse_blif(FILE *f, std::string dff_name)
char *cmd = strtok(buffer, " \t\r\n");
if (!strcmp(cmd, ".model"))
if (!strcmp(cmd, ".model")) {
if (module != nullptr)
goto error;
module = new RTLIL::Module;
module->name = RTLIL::escape_id(strtok(NULL, " \t\r\n"));
if (design->module(module->name))
log_error("Duplicate definition of module %s in line %d!\n", log_id(module->name), line_count);
design->add(module);
continue;
}
if (module == nullptr)
goto error;
if (!strcmp(cmd, ".end")) {
module->fixup_ports();
free(buffer);
return design;
module = nullptr;
continue;
}
if (!strcmp(cmd, ".inputs") || !strcmp(cmd, ".outputs")) {
@ -256,8 +266,6 @@ RTLIL::Design *abc_parse_blif(FILE *f, std::string dff_name)
error:
log_error("Syntax error in line %d!\n", line_count);
// delete design;
// return NULL;
}
YOSYS_NAMESPACE_END

2
frontends/blif/blifparse.h
View File

@ -24,7 +24,7 @@
YOSYS_NAMESPACE_BEGIN
extern RTLIL::Design *abc_parse_blif(FILE *f, std::string dff_name);
extern void parse_blif(RTLIL::Design *design, std::istream &f, std::string dff_name);
YOSYS_NAMESPACE_END

10
passes/techmap/abc.cc
View File

@ -877,14 +877,16 @@ void abc_module(RTLIL::Design *design, RTLIL::Module *current_module, std::strin
log_error("ABC: execution of command \"%s\" failed: return code %d.\n", buffer.c_str(), ret);
buffer = stringf("%s/%s", tempdir_name.c_str(), "output.blif");
f = fopen(buffer.c_str(), "rt");
if (f == NULL)
std::ifstream ifs;
ifs.open(buffer);
if (ifs.fail())
log_error("Can't open ABC output file `%s'.\n", buffer.c_str());
bool builtin_lib = liberty_file.empty() && script_file.empty() && !lut_mode;
RTLIL::Design *mapped_design = abc_parse_blif(f, builtin_lib ? "\\DFF" : "\\_dff_");
RTLIL::Design *mapped_design = new RTLIL::Design;
parse_blif(mapped_design, ifs, builtin_lib ? "\\DFF" : "\\_dff_");
fclose(f);
ifs.close();
log_header("Re-integrating ABC results.\n");
RTLIL::Module *mapped_mod = mapped_design->modules_["\\netlist"];