diff options
Diffstat (limited to 'kernel/register.cc')
| -rw-r--r-- | kernel/register.cc | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/register.cc b/kernel/register.cc index 26da96b95..4f1501330 100644 --- a/kernel/register.cc +++ b/kernel/register.cc @@ -25,6 +25,26 @@ #include <stdio.h> #include <errno.h> +#ifdef YOSYS_ENABLE_ZLIB +#include <zlib.h> + +PRIVATE_NAMESPACE_BEGIN +#define GZ_BUFFER_SIZE 8192 +void decompress_gzip(const std::string &filename, std::stringstream &out) +{ + char buffer[GZ_BUFFER_SIZE]; + int bytes_read; + gzFile gzf = gzopen(filename.c_str(), "rb"); + while(!gzeof(gzf)) { + bytes_read = gzread(gzf, reinterpret_cast<void *>(buffer), GZ_BUFFER_SIZE); + out.write(buffer, bytes_read); + } + gzclose(gzf); +} +PRIVATE_NAMESPACE_END + +#endif + YOSYS_NAMESPACE_BEGIN #define MAX_REG_COUNT 1000 @@ -436,6 +456,26 @@ void Frontend::extra_args(std::istream *&f, std::string &filename, std::vector<s delete ff; else f = ff; + // Check for gzip magic + unsigned char magic[3]; + int n = readsome(*ff, reinterpret_cast<char*>(magic), 3); + if (n == 3 && magic[0] == 0x1f && magic[1] == 0x8b) { +#ifdef YOSYS_ENABLE_ZLIB + log("Found gzip magic in file `%s', decompressing using zlib.\n", filename.c_str()); + if (magic[2] != 8) + log_cmd_error("gzip file `%s' uses unsupported compression type %02x\n", + filename.c_str(), unsigned(magic[2])); + delete ff; + std::stringstream *df = new std::stringstream(); + decompress_gzip(filename, *df); + f = df; +#else + log_cmd_error("File `%s' is a gzip file, but Yosys is compiled without zlib.\n", filename.c_str()); +#endif + } else { + ff->clear(); + ff->seekg(0, std::ios::beg); + } } if (f == NULL) log_cmd_error("Can't open input file `%s' for reading: %s\n", filename.c_str(), strerror(errno)); |