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loader: update for 20.0.0/21.0.0

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This commit is contained in:
Michael Scire
2025-11-13 15:32:00 -07:00
committed by SciresM
parent 4b32a2b964
commit db71eefd9f
7 changed files with 417 additions and 189 deletions
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226
stratosphere/loader/source/ldr_process_creation.cpp
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@@ -29,21 +29,22 @@ namespace ams::ldr {
/* Convenience defines. */
constexpr size_t SystemResourceSizeMax = 0x1FE00000;
constexpr size_t AutoLoadModuleSizeMax = 0x800000000;
/* Types. */
enum NsoIndex {
Nso_Rtld = 0,
Nso_Main = 1,
Nso_Compat0 = 2,
Nso_Compat1 = 3,
Nso_Compat2 = 4,
Nso_Compat3 = 5,
Nso_Compat4 = 6,
Nso_Compat5 = 7,
Nso_Compat6 = 8,
Nso_Compat7 = 9,
Nso_Compat8 = 10,
Nso_Compat9 = 11,
Nso_Wkc0 = 2,
Nso_Wkc1 = 3,
Nso_Wkc2 = 4,
Nso_Wkc3 = 5,
Nso_Wkc4 = 6,
Nso_Wkc5 = 7,
Nso_Wkc6 = 8,
Nso_Wkc7 = 9,
Nso_Wkc8 = 10,
Nso_Wkc9 = 11,
Nso_SubSdk0 = 12,
Nso_SubSdk1 = 13,
Nso_SubSdk2 = 14,
@@ -61,16 +62,16 @@ namespace ams::ldr {
constexpr inline const char *NsoPaths[Nso_Count] = {
ENCODE_ATMOSPHERE_CODE_PATH("/rtld"),
ENCODE_ATMOSPHERE_CODE_PATH("/main"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat0"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat1"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat2"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat3"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat4"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat5"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat6"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat7"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat8"),
ENCODE_ATMOSPHERE_CMPT_PATH("/compat9"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc0"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc1"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc2"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc3"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc4"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc5"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc6"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc7"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc8"),
ENCODE_ATMOSPHERE_BDLL_PATH("/wkc9"),
ENCODE_ATMOSPHERE_CODE_PATH("/subsdk0"),
ENCODE_ATMOSPHERE_CODE_PATH("/subsdk1"),
ENCODE_ATMOSPHERE_CODE_PATH("/subsdk2"),
@@ -97,8 +98,15 @@ namespace ams::ldr {
size_t nso_size[Nso_Count];
};
struct AutoLoadModuleInfo {
bool has_rtld;
bool has_main;
bool has_sdk;
bool has_subsdk;
bool has_nso[Nso_Count];
};
/* Global NSO header cache. */
bool g_has_nso[Nso_Count];
NsoHeader g_nso_headers[Nso_Count];
Result ValidateProgramVersion(ncm::ProgramId program_id, u32 version) {
@@ -161,12 +169,30 @@ namespace ams::ldr {
return static_cast<Acid::PoolPartition>((meta->acid->flags & Acid::AcidFlag_PoolPartitionMask) >> Acid::AcidFlag_PoolPartitionShift);
}
Result LoadAutoLoadHeaders(NsoHeader *nso_headers, bool *has_nso) {
Result LoadAutoLoadHeaders(NsoHeader *nso_headers, AutoLoadModuleInfo *ali, u32 acid_flags) {
/* Clear NSOs. */
std::memset(nso_headers, 0, sizeof(*nso_headers) * Nso_Count);
std::memset(has_nso, 0, sizeof(*has_nso) * Nso_Count);
*ali = {};
for (size_t i = 0; i < Nso_Count; i++) {
/* Only load browser DLLs if acid flags say to do so. */
switch (i) {
case Nso_Wkc0:
case Nso_Wkc1:
case Nso_Wkc2:
case Nso_Wkc3:
case Nso_Wkc4:
case Nso_Wkc5:
case Nso_Wkc6:
case Nso_Wkc7:
case Nso_Wkc8:
case Nso_Wkc9:
if ((acid_flags & Acid::AcidFlag_LoadBrowserCoreDll) == 0) {
continue;
}
break;
}
fs::FileHandle file;
if (R_SUCCEEDED(fs::OpenFile(std::addressof(file), GetNsoPath(i), fs::OpenMode_Read))) {
ON_SCOPE_EXIT { fs::CloseFile(file); };
@@ -176,27 +202,82 @@ namespace ams::ldr {
R_TRY(fs::ReadFile(std::addressof(read_size), file, 0, nso_headers + i, sizeof(*nso_headers)));
R_UNLESS(read_size == sizeof(*nso_headers), ldr::ResultInvalidNso());
has_nso[i] = true;
/* Note nso is present. */
switch (i) {
case Nso_Rtld:
ali->has_rtld = true;
break;
case Nso_Main:
ali->has_main = true;
break;
case Nso_SubSdk0:
case Nso_SubSdk1:
case Nso_SubSdk2:
case Nso_SubSdk3:
case Nso_SubSdk4:
case Nso_SubSdk5:
case Nso_SubSdk6:
case Nso_SubSdk7:
case Nso_SubSdk8:
case Nso_SubSdk9:
ali->has_subsdk = true;
break;
case Nso_Sdk:
ali->has_sdk = true;
break;
}
ali->has_nso[i] = true;
}
}
R_SUCCEED();
}
Result CheckAutoLoad(const NsoHeader *nso_headers, const bool *has_nso) {
Result CheckAutoLoad(const NsoHeader *nso_headers, const AutoLoadModuleInfo *ali, u32 acid_flags) {
/* We must always have a main. */
R_UNLESS(has_nso[Nso_Main], ldr::ResultInvalidNso());
R_UNLESS(ali->has_main, ldr::ResultInvalidNso());
/* If we don't have an RTLD, we must only have a main. */
if (!has_nso[Nso_Rtld]) {
for (size_t i = Nso_Main + 1; i < Nso_Count; i++) {
R_UNLESS(!has_nso[i], ldr::ResultInvalidNso());
}
/* All NSOs must not be --X. */
/* This is "probably" not checked on Ounce? */
for (size_t i = 0; i < Nso_Count; ++i) {
R_UNLESS((nso_headers[i].flags & NsoHeader::Flag_PreventCodeReads) == 0, ldr::ResultInvalidNso());
}
/* All NSOs must have zero text offset. */
/* If we don't have an RTLD, we must only have a main. */
const bool has_browser_dll = (acid_flags & Acid::AcidFlag_LoadBrowserCoreDll) != 0;
if (ali->has_rtld) {
/* If we have rtld, we must also have sdk. */
R_UNLESS(ali->has_sdk, ldr::ResultInvalidNso());
/* We must also only have one of [subsdk, browser dll]. */
R_UNLESS(!(ali->has_subsdk && has_browser_dll), ldr::ResultInvalidNso());
} else {
/* If we don't have rtld, we are not browser, and must not have browser core dll. */
R_UNLESS(!has_browser_dll, ldr::ResultInvalidNso());
}
/* Check NSO extents. */
for (size_t i = 0; i < Nso_Count; i++) {
/* Only validate the nsos we have. */
if (!ali->has_nso[i]) {
continue;
}
/* NSOs must have page-aligned segments. */
R_UNLESS(util::IsAligned(nso_headers[i].text_dst_offset, os::MemoryPageSize), ldr::ResultInvalidNso());
R_UNLESS(util::IsAligned(nso_headers[i].ro_dst_offset, os::MemoryPageSize), ldr::ResultInvalidNso());
R_UNLESS(util::IsAligned(nso_headers[i].rw_dst_offset, os::MemoryPageSize), ldr::ResultInvalidNso());
/* NSOs must have zero text offset. */
R_UNLESS(nso_headers[i].text_dst_offset == 0, ldr::ResultInvalidNso());
/* NSO .text must precede .rodata. */
const size_t text_end = static_cast<size_t>(nso_headers[i].text_dst_offset) + static_cast<size_t>(nso_headers[i].text_size);
R_UNLESS(text_end <= static_cast<size_t>(nso_headers[i].ro_dst_offset), ldr::ResultInvalidNso());
/* NSO .rodata must precede .rwdata. */
const size_t ro_end = static_cast<size_t>(nso_headers[i].ro_dst_offset) + static_cast<size_t>(nso_headers[i].ro_size);
R_UNLESS(ro_end <= static_cast<size_t>(nso_headers[i].rw_dst_offset), ldr::ResultInvalidNso());
}
R_SUCCEED();
@@ -433,7 +514,7 @@ namespace ams::ldr {
return rand % (max + 1);
}
Result DecideAddressSpaceLayout(ProcessInfo *out, svc::CreateProcessParameter *out_param, const NsoHeader *nso_headers, const bool *has_nso, const ArgumentStore::Entry *argument) {
Result DecideAddressSpaceLayout(ProcessInfo *out, svc::CreateProcessParameter *out_param, const NsoHeader *nso_headers, const AutoLoadModuleInfo *ali, const ArgumentStore::Entry *argument) {
/* Clear output. */
out->args_address = 0;
out->args_size = 0;
@@ -445,22 +526,32 @@ namespace ams::ldr {
/* Calculate base offsets. */
for (size_t i = 0; i < Nso_Count; i++) {
if (has_nso[i]) {
if (ali->has_nso[i]) {
out->nso_address[i] = total_size;
const size_t text_end = nso_headers[i].text_dst_offset + nso_headers[i].text_size;
const size_t ro_end = nso_headers[i].ro_dst_offset + nso_headers[i].ro_size;
const size_t rw_end = nso_headers[i].rw_dst_offset + nso_headers[i].rw_size + nso_headers[i].bss_size;
const size_t text_end = static_cast<size_t>(nso_headers[i].text_dst_offset) + static_cast<size_t>(nso_headers[i].text_size);
const size_t ro_end = static_cast<size_t>(nso_headers[i].ro_dst_offset) + static_cast<size_t>(nso_headers[i].ro_size);
const size_t rw_end = static_cast<size_t>(nso_headers[i].rw_dst_offset) + static_cast<size_t>(nso_headers[i].rw_size);
out->nso_size[i] = text_end;
out->nso_size[i] = std::max(out->nso_size[i], ro_end);
out->nso_size[i] = std::max(out->nso_size[i], rw_end);
out->nso_size[i] = util::AlignUp(out->nso_size[i], os::MemoryPageSize);
out->nso_size[i] += static_cast<size_t>(nso_headers[i].bss_size);
const size_t aligned_up_size = util::AlignUp(out->nso_size[i], os::MemoryPageSize) & (AutoLoadModuleSizeMax - 1);
R_UNLESS(out->nso_size[i] <= aligned_up_size, ldr::ResultInvalidNso());
R_UNLESS(aligned_up_size > 0, ldr::ResultInvalidNso());
out->nso_size[i] = aligned_up_size;
R_UNLESS(util::CanAddWithoutOverflow(total_size, out->nso_size[i]), ldr::ResultInvalidNso());
total_size += out->nso_size[i];
if (!argument_allocated && argument != nullptr) {
out->args_address = total_size;
out->args_size = util::AlignUp(2 * sizeof(u32) + argument->argument_size * 2 + ArgumentStore::ArgumentBufferSize, os::MemoryPageSize);
R_UNLESS(util::CanAddWithoutOverflow(total_size, out->args_size), ldr::ResultInvalidNso());
total_size += out->args_size;
argument_allocated = true;
}
}
@@ -508,11 +599,13 @@ namespace ams::ldr {
/* Set out. */
aslr_start += aslr_slide;
for (size_t i = 0; i < Nso_Count; i++) {
if (has_nso[i]) {
if (ali->has_nso[i]) {
R_UNLESS(util::CanAddWithoutOverflow(out->nso_address[i], aslr_start), ldr::ResultInvalidNso());
out->nso_address[i] += aslr_start;
}
}
if (out->args_address) {
R_UNLESS(util::CanAddWithoutOverflow(out->args_address, aslr_start), ldr::ResultInvalidNso());
out->args_address += aslr_start;
}
@@ -555,7 +648,7 @@ namespace ams::ldr {
R_SUCCEED();
}
Result LoadAutoLoadModule(os::NativeHandle process_handle, fs::FileHandle file, const NsoHeader *nso_header, uintptr_t nso_address, size_t nso_size, bool prevent_code_reads) {
Result LoadAutoLoadModule(os::NativeHandle process_handle, fs::FileHandle file, const NsoHeader *nso_header, uintptr_t nso_address, size_t nso_size) {
/* Map and read data from file. */
{
/* Map the process memory. */
@@ -574,9 +667,9 @@ namespace ams::ldr {
(nso_header->flags & NsoHeader::Flag_CheckHashRw) != 0, map_address + nso_header->rw_dst_offset, map_address + nso_size));
/* Clear unused space to zero. */
const size_t text_end = nso_header->text_dst_offset + nso_header->text_size;
const size_t ro_end = nso_header->ro_dst_offset + nso_header->ro_size;
const size_t rw_end = nso_header->rw_dst_offset + nso_header->rw_size;
const size_t text_end = static_cast<size_t>(nso_header->text_dst_offset) + static_cast<size_t>(nso_header->text_size);
const size_t ro_end = static_cast<size_t>(nso_header->ro_dst_offset) + static_cast<size_t>(nso_header->ro_size);
const size_t rw_end = static_cast<size_t>(nso_header->rw_dst_offset) + static_cast<size_t>(nso_header->rw_size);
std::memset(reinterpret_cast<void *>(map_address + 0), 0, nso_header->text_dst_offset);
std::memset(reinterpret_cast<void *>(map_address + text_end), 0, nso_header->ro_dst_offset - text_end);
std::memset(reinterpret_cast<void *>(map_address + ro_end), 0, nso_header->rw_dst_offset - ro_end);
@@ -594,6 +687,7 @@ namespace ams::ldr {
const size_t ro_size = util::AlignUp(nso_header->ro_size, os::MemoryPageSize);
const size_t rw_size = util::AlignUp(nso_header->rw_size + nso_header->bss_size, os::MemoryPageSize);
if (text_size) {
const bool prevent_code_reads = (nso_header->flags & NsoHeader::Flag_PreventCodeReads);
R_TRY(os::SetProcessMemoryPermission(process_handle, nso_address + nso_header->text_dst_offset, text_size, prevent_code_reads ? os::MemoryPermission_ExecuteOnly : os::MemoryPermission_ReadExecute));
}
if (ro_size) {
@@ -606,15 +700,15 @@ namespace ams::ldr {
R_SUCCEED();
}
Result LoadAutoLoadModules(const ProcessInfo *process_info, const NsoHeader *nso_headers, const bool *has_nso, const ArgumentStore::Entry *argument, bool prevent_code_reads) {
Result LoadAutoLoadModules(const ProcessInfo *process_info, const NsoHeader *nso_headers, const AutoLoadModuleInfo *ali, const ArgumentStore::Entry *argument) {
/* Load each NSO. */
for (size_t i = 0; i < Nso_Count; i++) {
if (has_nso[i]) {
if (ali->has_nso[i]) {
fs::FileHandle file;
R_TRY(fs::OpenFile(std::addressof(file), GetNsoPath(i), fs::OpenMode_Read));
ON_SCOPE_EXIT { fs::CloseFile(file); };
R_TRY(LoadAutoLoadModule(process_info->process_handle, file, nso_headers + i, process_info->nso_address[i], process_info->nso_size[i], prevent_code_reads));
R_TRY(LoadAutoLoadModule(process_info->process_handle, file, nso_headers + i, process_info->nso_address[i], process_info->nso_size[i]));
}
}
@@ -641,13 +735,13 @@ namespace ams::ldr {
R_SUCCEED();
}
Result CreateProcessAndLoadAutoLoadModules(ProcessInfo *out, const Meta *meta, const NsoHeader *nso_headers, const bool *has_nso, const ArgumentStore::Entry *argument, u32 flags, os::NativeHandle resource_limit) {
Result CreateProcessAndLoadAutoLoadModules(ProcessInfo *out, const Meta *meta, const NsoHeader *nso_headers, const AutoLoadModuleInfo *ali, const ArgumentStore::Entry *argument, u32 flags, os::NativeHandle resource_limit) {
/* Get CreateProcessParameter. */
svc::CreateProcessParameter param;
R_TRY(GetCreateProcessParameter(std::addressof(param), meta, flags, resource_limit));
/* Decide on an NSO layout. */
R_TRY(DecideAddressSpaceLayout(out, std::addressof(param), nso_headers, has_nso, argument));
R_TRY(DecideAddressSpaceLayout(out, std::addressof(param), nso_headers, ali, argument));
/* Actually create process. */
svc::Handle process_handle;
@@ -658,7 +752,7 @@ namespace ams::ldr {
ON_RESULT_FAILURE { svc::CloseHandle(process_handle); };
/* Load all auto load modules. */
R_RETURN(LoadAutoLoadModules(out, nso_headers, has_nso, argument, (meta->npdm->flags & ldr::Npdm::MetaFlag_PreventCodeReads) != 0));
R_RETURN(LoadAutoLoadModules(out, nso_headers, ali, argument));
}
}
@@ -667,7 +761,7 @@ namespace ams::ldr {
Result CreateProcess(os::NativeHandle *out, PinId pin_id, const ncm::ProgramLocation &loc, const cfg::OverrideStatus &override_status, const char *path, const ArgumentStore::Entry *argument, u32 flags, os::NativeHandle resource_limit, const ldr::ProgramAttributes &attrs) {
/* Mount code. */
AMS_UNUSED(path);
ScopedCodeMount mount(loc, override_status, attrs);
ScopedCodeMountForCode mount(loc, override_status, attrs);
R_TRY(mount.GetResult());
/* Load meta, possibly from cache. */
@@ -677,13 +771,35 @@ namespace ams::ldr {
/* Validate meta. */
R_TRY(ValidateMeta(std::addressof(meta), loc, mount.GetCodeVerificationData()));
/* If we should, load/validate the browser core dll. */
util::optional<ScopedCodeMountForBrowserCoreDll> bdll_mount;
if ((meta.acid->flags & Acid::AcidFlag_LoadBrowserCoreDll)) {
/* NOTE: I'm unsure whether we should be getting a fresh override status (allowing for different override between main and bdll?) */
/* or whether we should be using the main override status. Going to go with main, for sanity's sake. */
/* Also noting that Nintendo always passes ProgramAttributes=0 here, but this "should" be different on Ounce? */
/* Kind of unclear how to handle this without knowing what exactly is being ifdef'd. */
const ncm::ProgramLocation bdll_loc = ncm::ProgramLocation::Make(ncm::SystemProgramId::BrowserCoreDll, ncm::StorageId::BuiltInSystem);
const cfg::OverrideStatus bdll_override_status = override_status;
const ldr::ProgramAttributes bdll_attrs = attrs;
bdll_mount.emplace(bdll_loc, bdll_override_status, bdll_attrs);
R_TRY(bdll_mount->GetResult());
/* Load browser dll meta, possibly from cache. */
Meta bdll_meta;
R_TRY(LoadMetaFromCacheForBrowserCoreDll(std::addressof(bdll_meta), bdll_loc, bdll_override_status, bdll_attrs.platform));
/* Validate browser dll meta. */
R_TRY(ValidateMeta(std::addressof(bdll_meta), loc, mount.GetCodeVerificationData()));
}
/* Load, validate NSO headers. */
R_TRY(LoadAutoLoadHeaders(g_nso_headers, g_has_nso));
R_TRY(CheckAutoLoad(g_nso_headers, g_has_nso));
AutoLoadModuleInfo auto_load_info = {};
R_TRY(LoadAutoLoadHeaders(g_nso_headers, std::addressof(auto_load_info), meta.acid->flags));
R_TRY(CheckAutoLoad(g_nso_headers, std::addressof(auto_load_info), meta.acid->flags));
/* Actually create the process and load NSOs into process memory. */
ProcessInfo info;
R_TRY(CreateProcessAndLoadAutoLoadModules(std::addressof(info), std::addressof(meta), g_nso_headers, g_has_nso, argument, flags, resource_limit));
R_TRY(CreateProcessAndLoadAutoLoadModules(std::addressof(info), std::addressof(meta), g_nso_headers, std::addressof(auto_load_info), argument, flags, resource_limit));
/* Register NSOs with the RoManager. */
{
@@ -696,7 +812,7 @@ namespace ams::ldr {
/* Register all NSOs. */
for (size_t i = 0; i < Nso_Count; i++) {
if (g_has_nso[i]) {
if (auto_load_info.has_nso[i]) {
RoManager::GetInstance().AddNso(pin_id, g_nso_headers[i].module_id, info.nso_address[i], info.nso_size[i]);
}
}
@@ -727,7 +843,7 @@ namespace ams::ldr {
{
AMS_UNUSED(path);
ScopedCodeMount mount(loc, attrs);
ScopedCodeMountForCode mount(loc, attrs);
R_TRY(mount.GetResult());
R_TRY(LoadMeta(std::addressof(meta), loc, mount.GetOverrideStatus(), attrs.platform, false));
if (out_status != nullptr) {