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ecp5: verify hex strings contain only valid characters.

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Maya 2022-03-11 23:31:23 +00:00
parent 20e595e211
commit 2a3d0c1d29
1 changed files with 6 additions and 1 deletions
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7
ecp5/bitstream.cc
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@ -149,6 +149,8 @@ std::vector<bool> parse_init_str(const Property &p, int length, const char *cell
for (int i = 0; i < int(str.length()) - 2; i++) {
char c = str.at((str.size() - i) - 1);
int nibble = chtohex(c);
if (nibble == (int)std::string::npos)
log_error("hex string has invalid char '%c' at position %d.\n", c, i);
result.at(i * 4) = nibble & 0x1;
if (i * 4 + 1 < length)
result.at(i * 4 + 1) = nibble & 0x2;
@ -582,13 +584,16 @@ static std::vector<bool> parse_config_str(const Property &p, int length)
if (base == "0b") {
for (int i = 0; i < int(str.length()) - 2; i++) {
char c = str.at((str.size() - 1) - i);
NPNR_ASSERT(c == '0' || c == '1');
if (!(c == '0' || c == '1'))
log_error("binary string has invalid char '%c' at position %d.\n", c, i);
word.at(i) = (c == '1');
}
} else if (base == "0x") {
for (int i = 0; i < int(str.length()) - 2; i++) {
char c = str.at((str.size() - i) - 1);
int nibble = chtohex(c);
if (nibble == (int)std::string::npos)
log_error("hex string has invalid char '%c' at position %d.\n", c, i);
word.at(i * 4) = nibble & 0x1;
if (i * 4 + 1 < length)
word.at(i * 4 + 1) = nibble & 0x2;