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-rw-r--r--src/core/hle/kernel/k_page_table.cpp73
-rw-r--r--src/core/hle/kernel/k_page_table.h3
-rw-r--r--src/core/hle/kernel/k_process.cpp8
-rw-r--r--src/core/hle/kernel/physical_core.cpp18
-rw-r--r--src/core/hle/kernel/svc.cpp4
5 files changed, 64 insertions, 42 deletions
diff --git a/src/core/hle/kernel/k_page_table.cpp b/src/core/hle/kernel/k_page_table.cpp
index 23734b501..27d86c9a4 100644
--- a/src/core/hle/kernel/k_page_table.cpp
+++ b/src/core/hle/kernel/k_page_table.cpp
@@ -713,50 +713,61 @@ ResultCode KPageTable::UnmapPages(VAddr addr, KPageLinkedList& page_linked_list,
}
ResultCode KPageTable::SetProcessMemoryPermission(VAddr addr, std::size_t size,
- KMemoryPermission perm) {
+ Svc::MemoryPermission svc_perm) {
+ const size_t num_pages = size / PageSize;
+ // Lock the table.
std::lock_guard lock{page_table_lock};
- KMemoryState prev_state{};
- KMemoryPermission prev_perm{};
-
- CASCADE_CODE(CheckMemoryState(
- &prev_state, &prev_perm, nullptr, nullptr, addr, size, KMemoryState::FlagCode,
- KMemoryState::FlagCode, KMemoryPermission::None, KMemoryPermission::None,
- KMemoryAttribute::Mask, KMemoryAttribute::None, KMemoryAttribute::IpcAndDeviceMapped));
-
- KMemoryState state{prev_state};
+ // Verify we can change the memory permission.
+ KMemoryState old_state;
+ KMemoryPermission old_perm;
+ size_t num_allocator_blocks;
+ R_TRY(this->CheckMemoryState(std::addressof(old_state), std::addressof(old_perm), nullptr,
+ std::addressof(num_allocator_blocks), addr, size,
+ KMemoryState::FlagCode, KMemoryState::FlagCode,
+ KMemoryPermission::None, KMemoryPermission::None,
+ KMemoryAttribute::All, KMemoryAttribute::None));
- // Ensure state is mutable if permission allows write
- if ((perm & KMemoryPermission::Write) != KMemoryPermission::None) {
- if (prev_state == KMemoryState::Code) {
- state = KMemoryState::CodeData;
- } else if (prev_state == KMemoryState::AliasCode) {
- state = KMemoryState::AliasCodeData;
- } else {
+ // Determine new perm/state.
+ const KMemoryPermission new_perm = ConvertToKMemoryPermission(svc_perm);
+ KMemoryState new_state = old_state;
+ const bool is_w = (new_perm & KMemoryPermission::UserWrite) == KMemoryPermission::UserWrite;
+ const bool is_x = (new_perm & KMemoryPermission::UserExecute) == KMemoryPermission::UserExecute;
+ const bool was_x =
+ (old_perm & KMemoryPermission::UserExecute) == KMemoryPermission::UserExecute;
+ ASSERT(!(is_w && is_x));
+
+ if (is_w) {
+ switch (old_state) {
+ case KMemoryState::Code:
+ new_state = KMemoryState::CodeData;
+ break;
+ case KMemoryState::AliasCode:
+ new_state = KMemoryState::AliasCodeData;
+ break;
+ default:
UNREACHABLE();
}
}
- // Return early if there is nothing to change
- if (state == prev_state && perm == prev_perm) {
- return ResultSuccess;
- }
+ // Succeed if there's nothing to do.
+ R_SUCCEED_IF(old_perm == new_perm && old_state == new_state);
- if ((prev_perm & KMemoryPermission::Execute) != (perm & KMemoryPermission::Execute)) {
+ // Perform mapping operation.
+ const auto operation =
+ was_x ? OperationType::ChangePermissionsAndRefresh : OperationType::ChangePermissions;
+ R_TRY(Operate(addr, num_pages, new_perm, operation));
+
+ // Update the blocks.
+ block_manager->Update(addr, num_pages, new_state, new_perm, KMemoryAttribute::None);
+
+ // Ensure cache coherency, if we're setting pages as executable.
+ if (is_x) {
// Memory execution state is changing, invalidate CPU cache range
system.InvalidateCpuInstructionCacheRange(addr, size);
}
- const std::size_t num_pages{size / PageSize};
- const OperationType operation{(perm & KMemoryPermission::Execute) != KMemoryPermission::None
- ? OperationType::ChangePermissionsAndRefresh
- : OperationType::ChangePermissions};
-
- CASCADE_CODE(Operate(addr, num_pages, perm, operation));
-
- block_manager->Update(addr, num_pages, state, perm);
-
return ResultSuccess;
}
diff --git a/src/core/hle/kernel/k_page_table.h b/src/core/hle/kernel/k_page_table.h
index a596bf381..274644181 100644
--- a/src/core/hle/kernel/k_page_table.h
+++ b/src/core/hle/kernel/k_page_table.h
@@ -43,7 +43,8 @@ public:
ResultCode MapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state,
KMemoryPermission perm);
ResultCode UnmapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state);
- ResultCode SetProcessMemoryPermission(VAddr addr, std::size_t size, KMemoryPermission perm);
+ ResultCode SetProcessMemoryPermission(VAddr addr, std::size_t size,
+ Svc::MemoryPermission svc_perm);
KMemoryInfo QueryInfo(VAddr addr);
ResultCode ReserveTransferMemory(VAddr addr, std::size_t size, KMemoryPermission perm);
ResultCode ResetTransferMemory(VAddr addr, std::size_t size);
diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp
index 856c200d3..cca405fed 100644
--- a/src/core/hle/kernel/k_process.cpp
+++ b/src/core/hle/kernel/k_process.cpp
@@ -541,16 +541,16 @@ void KProcess::FreeTLSRegion(VAddr tls_address) {
void KProcess::LoadModule(CodeSet code_set, VAddr base_addr) {
const auto ReprotectSegment = [&](const CodeSet::Segment& segment,
- KMemoryPermission permission) {
+ Svc::MemoryPermission permission) {
page_table->SetProcessMemoryPermission(segment.addr + base_addr, segment.size, permission);
};
kernel.System().Memory().WriteBlock(*this, base_addr, code_set.memory.data(),
code_set.memory.size());
- ReprotectSegment(code_set.CodeSegment(), KMemoryPermission::ReadAndExecute);
- ReprotectSegment(code_set.RODataSegment(), KMemoryPermission::Read);
- ReprotectSegment(code_set.DataSegment(), KMemoryPermission::UserReadWrite);
+ ReprotectSegment(code_set.CodeSegment(), Svc::MemoryPermission::ReadExecute);
+ ReprotectSegment(code_set.RODataSegment(), Svc::MemoryPermission::Read);
+ ReprotectSegment(code_set.DataSegment(), Svc::MemoryPermission::ReadWrite);
}
bool KProcess::IsSignaled() const {
diff --git a/src/core/hle/kernel/physical_core.cpp b/src/core/hle/kernel/physical_core.cpp
index 7f02d9471..7477668e4 100644
--- a/src/core/hle/kernel/physical_core.cpp
+++ b/src/core/hle/kernel/physical_core.cpp
@@ -16,17 +16,25 @@ namespace Kernel {
PhysicalCore::PhysicalCore(std::size_t core_index_, Core::System& system_, KScheduler& scheduler_,
Core::CPUInterrupts& interrupts_)
: core_index{core_index_}, system{system_}, scheduler{scheduler_},
- interrupts{interrupts_}, guard{std::make_unique<Common::SpinLock>()} {}
+ interrupts{interrupts_}, guard{std::make_unique<Common::SpinLock>()} {
+#ifdef ARCHITECTURE_x86_64
+ // TODO(bunnei): Initialization relies on a core being available. We may later replace this with
+ // a 32-bit instance of Dynarmic. This should be abstracted out to a CPU manager.
+ auto& kernel = system.Kernel();
+ arm_interface = std::make_unique<Core::ARM_Dynarmic_64>(
+ system, interrupts, kernel.IsMulticore(), kernel.GetExclusiveMonitor(), core_index);
+#else
+#error Platform not supported yet.
+#endif
+}
PhysicalCore::~PhysicalCore() = default;
void PhysicalCore::Initialize([[maybe_unused]] bool is_64_bit) {
#ifdef ARCHITECTURE_x86_64
auto& kernel = system.Kernel();
- if (is_64_bit) {
- arm_interface = std::make_unique<Core::ARM_Dynarmic_64>(
- system, interrupts, kernel.IsMulticore(), kernel.GetExclusiveMonitor(), core_index);
- } else {
+ if (!is_64_bit) {
+ // We already initialized a 64-bit core, replace with a 32-bit one.
arm_interface = std::make_unique<Core::ARM_Dynarmic_32>(
system, interrupts, kernel.IsMulticore(), kernel.GetExclusiveMonitor(), core_index);
}
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 55ce0236f..c7f5140f4 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -1309,6 +1309,8 @@ static ResultCode SetProcessMemoryPermission(Core::System& system, Handle proces
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
R_UNLESS(size > 0, ResultInvalidSize);
R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
+ R_UNLESS(address == static_cast<uintptr_t>(address), ResultInvalidCurrentMemory);
+ R_UNLESS(size == static_cast<size_t>(size), ResultInvalidCurrentMemory);
// Validate the memory permission.
R_UNLESS(IsValidProcessMemoryPermission(perm), ResultInvalidNewMemoryPermission);
@@ -1323,7 +1325,7 @@ static ResultCode SetProcessMemoryPermission(Core::System& system, Handle proces
R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory);
// Set the memory permission.
- return page_table.SetProcessMemoryPermission(address, size, ConvertToKMemoryPermission(perm));
+ return page_table.SetProcessMemoryPermission(address, size, perm);
}
static ResultCode MapProcessMemory(Core::System& system, VAddr dst_address, Handle process_handle,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 14:56:53 +0100