| 170 | //===----------------------------------------------------------------------===// |
| 171 | |
| 172 | static LogicalResult writeHeader(raw_ostream &stream, Operation *op, |
| 173 | const BytecodeWriterConfig &config) { |
| 174 | // Validate the bytecode version. |
| 175 | if (config.bytecodeVersion < BytecodeVersion::kMinSupportedVersion) { |
| 176 | return op->emitError() << "unsupported version requested " |
| 177 | << config.bytecodeVersion.toString() |
| 178 | << ", must be in range [" |
| 179 | << BytecodeVersion::kMinSupportedVersion.toString() |
| 180 | << ", " |
| 181 | << BytecodeVersion::kCurrentVersion.toString() |
| 182 | << ']'; |
| 183 | } |
| 184 | |
| 185 | EncodingWriter writer(stream); |
| 186 | const char magicNumber[8] = {0x7F, 'T', 'i', 'l', 'e', 'I', 'R', 0x00}; |
| 187 | writer.write(magicNumber, sizeof(magicNumber)); |
| 188 | writer.writeLE(config.bytecodeVersion.getMajor()); |
| 189 | writer.writeLE(config.bytecodeVersion.getMinor()); |
| 190 | writer.writeLE(config.bytecodeVersion.getTag()); |
| 191 | |
| 192 | return success(); |
| 193 | } |
| 194 | |
| 195 | //===----------------------------------------------------------------------===// |
| 196 | // Section Header Writer |