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Added support for uncompressed NSOs (#1374) 

* Added support for uncompressed NSOs

* Moved compressed section check to NsoHeader
This commit is contained in:
David 2018-09-21 14:39:30 +10:00 committed by bunnei
parent 8606995515
commit 1db1e013e0
1 changed files with 12 additions and 3 deletions
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15
src/core/loader/nso.cpp
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@ -32,11 +32,18 @@ static_assert(sizeof(NsoSegmentHeader) == 0x10, "NsoSegmentHeader has incorrect
struct NsoHeader {
u32_le magic;
INSERT_PADDING_BYTES(0xc);
u32_le version;
INSERT_PADDING_WORDS(1);
u8 flags;
std::array<NsoSegmentHeader, 3> segments; // Text, RoData, Data (in that order)
u32_le bss_size;
INSERT_PADDING_BYTES(0x1c);
std::array<u32_le, 3> segments_compressed_size;
bool IsSegmentCompressed(size_t segment_num) const {
ASSERT_MSG(segment_num < 3, "Invalid segment {}", segment_num);
return ((flags >> segment_num) & 1);
}
};
static_assert(sizeof(NsoHeader) == 0x6c, "NsoHeader has incorrect size.");
static_assert(std::is_trivially_copyable_v<NsoHeader>, "NsoHeader isn't trivially copyable.");
@ -105,9 +112,11 @@ VAddr AppLoader_NSO::LoadModule(FileSys::VirtualFile file, VAddr load_base) {
Kernel::SharedPtr<Kernel::CodeSet> codeset = Kernel::CodeSet::Create(kernel, "");
std::vector<u8> program_image;
for (std::size_t i = 0; i < nso_header.segments.size(); ++i) {
const std::vector<u8> compressed_data =
std::vector<u8> data =
file->ReadBytes(nso_header.segments_compressed_size[i], nso_header.segments[i].offset);
std::vector<u8> data = DecompressSegment(compressed_data, nso_header.segments[i]);
if (nso_header.IsSegmentCompressed(i)) {
data = DecompressSegment(data, nso_header.segments[i]);
}
program_image.resize(nso_header.segments[i].location);
program_image.insert(program_image.end(), data.begin(), data.end());
codeset->segments[i].addr = nso_header.segments[i].location;