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Merge pull request #80 from gdkchan/nro_fix

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Fix NRO loading
This commit is contained in:
bunnei 2018-01-17 20:05:21 -05:00 committed by GitHub
commit 01f379baa7
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 20 deletions
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29
src/core/loader/nro.cpp
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@ -62,20 +62,6 @@ static constexpr u32 PageAlignSize(u32 size) {
return (size + Memory::PAGE_MASK) & ~Memory::PAGE_MASK;
}
static std::vector<u8> ReadSegment(FileUtil::IOFile& file, const NroSegmentHeader& header) {
std::vector<u8> data;
data.resize(header.size);
file.Seek(header.offset + sizeof(NroHeader), SEEK_SET);
size_t bytes_read{file.ReadBytes(data.data(), header.size)};
if (header.size != PageAlignSize(static_cast<u32>(bytes_read))) {
LOG_CRITICAL(Loader, "Failed to read NRO segment bytes", header.size);
return {};
}
return data;
}
bool AppLoader_NRO::LoadNro(const std::string& path, VAddr load_base) {
FileUtil::IOFile file(path, "rb");
if (!file.IsOpen()) {
@ -95,7 +81,7 @@ bool AppLoader_NRO::LoadNro(const std::string& path, VAddr load_base) {
// Build program image
Kernel::SharedPtr<Kernel::CodeSet> codeset = Kernel::CodeSet::Create("", 0);
std::vector<u8> program_image;
program_image.resize(PageAlignSize(nro_header.file_size + nro_header.bss_size));
program_image.resize(PageAlignSize(nro_header.file_size));
file.Seek(0, SEEK_SET);
file.ReadBytes(program_image.data(), nro_header.file_size);
@ -107,15 +93,16 @@ bool AppLoader_NRO::LoadNro(const std::string& path, VAddr load_base) {
// Read MOD header
ModHeader mod_header{};
u32 bss_size{Memory::PAGE_SIZE}; // Default .bss to page size if MOD0 section doesn't exist
// Default .bss to NRO header bss size if MOD0 section doesn't exist
u32 bss_size{PageAlignSize(nro_header.bss_size)};
std::memcpy(&mod_header, program_image.data() + nro_header.module_header_offset,
sizeof(ModHeader));
const bool has_mod_header{mod_header.magic == Common::MakeMagic('M', 'O', 'D', '0')};
if (has_mod_header) {
// Resize program image to include .bss section and page align each section
bss_size = PageAlignSize(mod_header.bss_end_offset - mod_header.bss_start_offset);
codeset->data.size += bss_size;
}
codeset->data.size += bss_size;
program_image.resize(PageAlignSize(static_cast<u32>(program_image.size()) + bss_size));
// Load codeset for current process
@ -134,9 +121,11 @@ ResultStatus AppLoader_NRO::Load(Kernel::SharedPtr<Kernel::Process>& process) {
return ResultStatus::Error;
}
// Load and relocate "main" and "sdk" NSO
static constexpr VAddr base_addr{Memory::PROCESS_IMAGE_VADDR};
process = Kernel::Process::Create("main");
// Load NRO
static constexpr VAddr base_addr{Memory::PROCESS_IMAGE_VADDR};
if (!LoadNro(filepath, base_addr)) {
return ResultStatus::ErrorInvalidFormat;
}
@ -145,7 +134,7 @@ ResultStatus AppLoader_NRO::Load(Kernel::SharedPtr<Kernel::Process>& process) {
process->address_mappings = default_address_mappings;
process->resource_limit =
Kernel::ResourceLimit::GetForCategory(Kernel::ResourceLimitCategory::APPLICATION);
process->Run(base_addr, 48, Kernel::DEFAULT_STACK_SIZE);
process->Run(base_addr + sizeof(NroHeader), 48, Kernel::DEFAULT_STACK_SIZE);
is_loaded = true;
return ResultStatus::Success;