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-rw-r--r--src/core/hle/kernel/k_process.cpp25
-rw-r--r--src/core/hle/kernel/k_process.h7
-rw-r--r--src/core/loader/deconstructed_rom_directory.cpp2
-rw-r--r--src/core/loader/kip.cpp2
-rw-r--r--src/core/loader/nro.cpp2
-rw-r--r--src/core/loader/nso.cpp2
-rw-r--r--src/core/reporter.cpp4
7 files changed, 33 insertions, 11 deletions
diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp
index e573e2a57..703049ede 100644
--- a/src/core/hle/kernel/k_process.cpp
+++ b/src/core/hle/kernel/k_process.cpp
@@ -38,7 +38,7 @@ namespace {
*/
void SetupMainThread(Core::System& system, KProcess& owner_process, u32 priority,
KProcessAddress stack_top) {
- const KProcessAddress entry_point = owner_process.GetPageTable().GetCodeRegionStart();
+ const KProcessAddress entry_point = owner_process.GetEntryPoint();
ASSERT(owner_process.GetResourceLimit()->Reserve(LimitableResource::ThreadCountMax, 1));
KThread* thread = KThread::Create(system.Kernel());
@@ -358,6 +358,21 @@ Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std:
m_system_resource_size = metadata.GetSystemResourceSize();
m_image_size = code_size;
+ if (metadata.GetAddressSpaceType() == FileSys::ProgramAddressSpaceType::Is39Bit) {
+ // For 39-bit processes, the ASLR region starts at 0x800'0000 and is ~512GiB large.
+ // However, some (buggy) programs/libraries like skyline incorrectly depend on the
+ // existence of ASLR pages before the entry point, so we will adjust the load address
+ // to point to about 2GiB into the ASLR region.
+ m_code_address = 0x8000'0000;
+ } else {
+ // All other processes can be mapped at the beginning of the code region.
+ if (metadata.GetAddressSpaceType() == FileSys::ProgramAddressSpaceType::Is36Bit) {
+ m_code_address = 0x800'0000;
+ } else {
+ m_code_address = 0x20'0000;
+ }
+ }
+
KScopedResourceReservation memory_reservation(
m_resource_limit, LimitableResource::PhysicalMemoryMax, code_size + m_system_resource_size);
if (!memory_reservation.Succeeded()) {
@@ -368,15 +383,15 @@ Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std:
// Initialize process address space
if (const Result result{m_page_table.InitializeForProcess(
metadata.GetAddressSpaceType(), false, false, false, KMemoryManager::Pool::Application,
- 0x8000000, code_size, std::addressof(m_kernel.GetAppSystemResource()), m_resource_limit,
- m_kernel.System().ApplicationMemory())};
+ this->GetEntryPoint(), code_size, std::addressof(m_kernel.GetAppSystemResource()),
+ m_resource_limit, m_kernel.System().ApplicationMemory())};
result.IsError()) {
R_RETURN(result);
}
// Map process code region
- if (const Result result{m_page_table.MapProcessCode(m_page_table.GetCodeRegionStart(),
- code_size / PageSize, KMemoryState::Code,
+ if (const Result result{m_page_table.MapProcessCode(this->GetEntryPoint(), code_size / PageSize,
+ KMemoryState::Code,
KMemoryPermission::None)};
result.IsError()) {
R_RETURN(result);
diff --git a/src/core/hle/kernel/k_process.h b/src/core/hle/kernel/k_process.h
index c9b37e138..4fdeaf11a 100644
--- a/src/core/hle/kernel/k_process.h
+++ b/src/core/hle/kernel/k_process.h
@@ -177,6 +177,10 @@ public:
return m_program_id;
}
+ KProcessAddress GetEntryPoint() const {
+ return m_code_address;
+ }
+
/// Gets the resource limit descriptor for this process
KResourceLimit* GetResourceLimit() const;
@@ -485,6 +489,9 @@ private:
/// Address indicating the location of the process' dedicated TLS region.
KProcessAddress m_plr_address = 0;
+ /// Address indicating the location of the process's entry point.
+ KProcessAddress m_code_address = 0;
+
/// Random values for svcGetInfo RandomEntropy
std::array<u64, RANDOM_ENTROPY_SIZE> m_random_entropy{};
diff --git a/src/core/loader/deconstructed_rom_directory.cpp b/src/core/loader/deconstructed_rom_directory.cpp
index e04ad19db..f4eaf3331 100644
--- a/src/core/loader/deconstructed_rom_directory.cpp
+++ b/src/core/loader/deconstructed_rom_directory.cpp
@@ -153,7 +153,7 @@ AppLoader_DeconstructedRomDirectory::LoadResult AppLoader_DeconstructedRomDirect
// Load NSO modules
modules.clear();
- const VAddr base_address{GetInteger(process.GetPageTable().GetCodeRegionStart())};
+ const VAddr base_address{GetInteger(process.GetEntryPoint())};
VAddr next_load_addr{base_address};
const FileSys::PatchManager pm{metadata.GetTitleID(), system.GetFileSystemController(),
system.GetContentProvider()};
diff --git a/src/core/loader/kip.cpp b/src/core/loader/kip.cpp
index ffe976b94..d722459c6 100644
--- a/src/core/loader/kip.cpp
+++ b/src/core/loader/kip.cpp
@@ -96,7 +96,7 @@ AppLoader::LoadResult AppLoader_KIP::Load(Kernel::KProcess& process,
}
codeset.memory = std::move(program_image);
- const VAddr base_address = GetInteger(process.GetPageTable().GetCodeRegionStart());
+ const VAddr base_address = GetInteger(process.GetEntryPoint());
process.LoadModule(std::move(codeset), base_address);
LOG_DEBUG(Loader, "loaded module {} @ 0x{:X}", kip->GetName(), base_address);
diff --git a/src/core/loader/nro.cpp b/src/core/loader/nro.cpp
index 506808b5d..d7562b4bc 100644
--- a/src/core/loader/nro.cpp
+++ b/src/core/loader/nro.cpp
@@ -203,7 +203,7 @@ static bool LoadNroImpl(Kernel::KProcess& process, const std::vector<u8>& data)
// Load codeset for current process
codeset.memory = std::move(program_image);
- process.LoadModule(std::move(codeset), process.GetPageTable().GetCodeRegionStart());
+ process.LoadModule(std::move(codeset), process.GetEntryPoint());
return true;
}
diff --git a/src/core/loader/nso.cpp b/src/core/loader/nso.cpp
index 74cc9579f..549822506 100644
--- a/src/core/loader/nso.cpp
+++ b/src/core/loader/nso.cpp
@@ -167,7 +167,7 @@ AppLoader_NSO::LoadResult AppLoader_NSO::Load(Kernel::KProcess& process, Core::S
modules.clear();
// Load module
- const VAddr base_address = GetInteger(process.GetPageTable().GetCodeRegionStart());
+ const VAddr base_address = GetInteger(process.GetEntryPoint());
if (!LoadModule(process, system, *file, base_address, true, true)) {
return {ResultStatus::ErrorLoadingNSO, {}};
}
diff --git a/src/core/reporter.cpp b/src/core/reporter.cpp
index b5b3e7eda..ed875d444 100644
--- a/src/core/reporter.cpp
+++ b/src/core/reporter.cpp
@@ -117,8 +117,8 @@ json GetProcessorStateDataAuto(Core::System& system) {
arm.SaveContext(context);
return GetProcessorStateData(process->Is64BitProcess() ? "AArch64" : "AArch32",
- GetInteger(process->GetPageTable().GetCodeRegionStart()),
- context.sp, context.pc, context.pstate, context.cpu_registers);
+ GetInteger(process->GetEntryPoint()), context.sp, context.pc,
+ context.pstate, context.cpu_registers);
}
json GetBacktraceData(Core::System& system) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 00:15:05 +0100