diff options
Diffstat (limited to 'gold/compressed_output.cc')
| -rw-r--r-- | gold/compressed_output.cc | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/gold/compressed_output.cc b/gold/compressed_output.cc index 8c9fc1e96f7..02d78212daf 100644 --- a/gold/compressed_output.cc +++ b/gold/compressed_output.cc @@ -143,8 +143,55 @@ bool decompress_input_section(const unsigned char* compressed_data, unsigned long compressed_size, unsigned char* uncompressed_data, - unsigned long uncompressed_size) + unsigned long uncompressed_size, + int size, + bool big_endian, + elfcpp::Elf_Xword sh_flags) { + if ((sh_flags & elfcpp::SHF_COMPRESSED) != 0) + { + unsigned int compression_header_size; + if (size == 32) + { + compression_header_size = elfcpp::Elf_sizes<32>::chdr_size; + if (big_endian) + { + elfcpp::Chdr<32, true> chdr(compressed_data); + if (chdr.get_ch_type() != elfcpp::ELFCOMPRESS_ZLIB) + return false; + } + else + { + elfcpp::Chdr<32, false> chdr(compressed_data); + if (chdr.get_ch_type() != elfcpp::ELFCOMPRESS_ZLIB) + return false; + } + } + else if (size == 64) + { + compression_header_size = elfcpp::Elf_sizes<64>::chdr_size; + if (big_endian) + { + elfcpp::Chdr<64, true> chdr(compressed_data); + if (chdr.get_ch_type() != elfcpp::ELFCOMPRESS_ZLIB) + return false; + } + else + { + elfcpp::Chdr<64, false> chdr(compressed_data); + if (chdr.get_ch_type() != elfcpp::ELFCOMPRESS_ZLIB) + return false; + } + } + else + gold_unreachable(); + + return zlib_decompress(compressed_data + compression_header_size, + compressed_size - compression_header_size, + uncompressed_data, + uncompressed_size); + } + const unsigned int zlib_header_size = 12; /* Verify the compression header. Currently, we support only zlib |