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Adding check for BLIF names command input plane size.

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This commit is contained in:
Archie 2022-08-21 23:18:20 -05:00
parent db73f3c26b
commit 15a0697c70
2 changed files with 17 additions and 1 deletions
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9
frontends/blif/blifparse.cc
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@ -21,6 +21,8 @@
YOSYS_NAMESPACE_BEGIN
const int lut_input_plane_limit = 12;
static bool read_next_line(char *&buffer, size_t &buffer_size, int &line_count, std::istream &f)
{
string strbuf;
@ -513,6 +515,11 @@ void parse_blif(RTLIL::Design *design, std::istream &f, IdString dff_name, bool
sopmode = -1;
lastcell = sopcell;
}
else if (input_sig.size() > lut_input_plane_limit)
{
err_reason = stringf("names' input plane must have fewer than 13 signals.");
goto error_with_reason;
}
else
{
RTLIL::Cell *cell = module->addCell(NEW_ID, ID($lut));
@ -576,7 +583,7 @@ void parse_blif(RTLIL::Design *design, std::istream &f, IdString dff_name, bool
if (lutptr)
{
if (input_len > 12)
if (input_len > lut_input_plane_limit)
goto error;
for (int i = 0; i < (1 << input_len); i++) {