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Merge pull request #3340 from SciresM/pmdx

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loader: provide default arguments (zero byte) to NSOs
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bunnei 2020-01-24 10:31:43 -05:00 committed by GitHub
commit f64adcfc37
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2 changed files with 10 additions and 3 deletions
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11
src/core/loader/nso.cpp
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@ -97,7 +97,8 @@ std::optional<VAddr> AppLoader_NSO::LoadModule(Kernel::Process& process,
if (nso_header.IsSegmentCompressed(i)) {
data = DecompressSegment(data, nso_header.segments[i]);
}
program_image.resize(nso_header.segments[i].location + data.size());
program_image.resize(nso_header.segments[i].location +
PageAlignSize(static_cast<u32>(data.size())));
std::memcpy(program_image.data() + nso_header.segments[i].location, data.data(),
data.size());
codeset.segments[i].addr = nso_header.segments[i].location;
@ -105,8 +106,12 @@ std::optional<VAddr> AppLoader_NSO::LoadModule(Kernel::Process& process,
codeset.segments[i].size = PageAlignSize(static_cast<u32>(data.size()));
}
if (should_pass_arguments && !Settings::values.program_args.empty()) {
const auto arg_data = Settings::values.program_args;
if (should_pass_arguments) {
std::vector<u8> arg_data{Settings::values.program_args.begin(),
Settings::values.program_args.end()};
if (arg_data.empty()) {
arg_data.resize(NSO_ARGUMENT_DEFAULT_SIZE);
}
codeset.DataSegment().size += NSO_ARGUMENT_DATA_ALLOCATION_SIZE;
NSOArgumentHeader args_header{
NSO_ARGUMENT_DATA_ALLOCATION_SIZE, static_cast<u32_le>(arg_data.size()), {}};

2
src/core/loader/nso.h
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@ -56,6 +56,8 @@ static_assert(sizeof(NSOHeader) == 0x100, "NSOHeader has incorrect size.");
static_assert(std::is_trivially_copyable_v<NSOHeader>, "NSOHeader must be trivially copyable.");
constexpr u64 NSO_ARGUMENT_DATA_ALLOCATION_SIZE = 0x9000;
// NOTE: Official software default argument state is unverified.
constexpr u64 NSO_ARGUMENT_DEFAULT_SIZE = 1;
struct NSOArgumentHeader {
u32_le allocated_size;