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-rw-r--r--src/core/hle/kernel/memory.cpp1
-rw-r--r--src/core/hle/kernel/process.cpp2
-rw-r--r--src/core/hle/kernel/shared_memory.cpp177
-rw-r--r--src/core/hle/kernel/shared_memory.h48
4 files changed, 161 insertions, 67 deletions
diff --git a/src/core/hle/kernel/memory.cpp b/src/core/hle/kernel/memory.cpp
index 61a741e28..4be20db22 100644
--- a/src/core/hle/kernel/memory.cpp
+++ b/src/core/hle/kernel/memory.cpp
@@ -107,7 +107,6 @@ struct MemoryArea {
// We don't declare the IO regions in here since its handled by other means.
static MemoryArea memory_areas[] = {
- {SHARED_MEMORY_VADDR, SHARED_MEMORY_SIZE, "Shared Memory"}, // Shared memory
{VRAM_VADDR, VRAM_SIZE, "VRAM"}, // Video memory (VRAM)
};
diff --git a/src/core/hle/kernel/process.cpp b/src/core/hle/kernel/process.cpp
index 0546f6e16..69302cc82 100644
--- a/src/core/hle/kernel/process.cpp
+++ b/src/core/hle/kernel/process.cpp
@@ -209,7 +209,7 @@ ResultVal<VAddr> Process::LinearAllocate(VAddr target, u32 size, VMAPermission p
return ERR_INVALID_ADDRESS;
}
- // Expansion of the linear heap is only allowed if you do an allocation immediatelly at its
+ // Expansion of the linear heap is only allowed if you do an allocation immediately at its
// end. It's possible to free gaps in the middle of the heap and then reallocate them later,
// but expansions are only allowed at the end.
if (target == heap_end) {
diff --git a/src/core/hle/kernel/shared_memory.cpp b/src/core/hle/kernel/shared_memory.cpp
index d90f0f00f..6a22c8986 100644
--- a/src/core/hle/kernel/shared_memory.cpp
+++ b/src/core/hle/kernel/shared_memory.cpp
@@ -7,6 +7,7 @@
#include "common/logging/log.h"
#include "core/memory.h"
+#include "core/hle/kernel/memory.h"
#include "core/hle/kernel/shared_memory.h"
namespace Kernel {
@@ -14,93 +15,157 @@ namespace Kernel {
SharedMemory::SharedMemory() {}
SharedMemory::~SharedMemory() {}
-SharedPtr<SharedMemory> SharedMemory::Create(u32 size, MemoryPermission permissions,
- MemoryPermission other_permissions, std::string name) {
+SharedPtr<SharedMemory> SharedMemory::Create(SharedPtr<Process> owner_process, u32 size, MemoryPermission permissions,
+ MemoryPermission other_permissions, VAddr address, MemoryRegion region, std::string name) {
SharedPtr<SharedMemory> shared_memory(new SharedMemory);
+ shared_memory->owner_process = owner_process;
shared_memory->name = std::move(name);
- shared_memory->base_address = 0x0;
- shared_memory->fixed_address = 0x0;
shared_memory->size = size;
shared_memory->permissions = permissions;
shared_memory->other_permissions = other_permissions;
+ if (address == 0) {
+ // We need to allocate a block from the Linear Heap ourselves.
+ // We'll manually allocate some memory from the linear heap in the specified region.
+ MemoryRegionInfo* memory_region = GetMemoryRegion(region);
+ auto& linheap_memory = memory_region->linear_heap_memory;
+
+ ASSERT_MSG(linheap_memory->size() + size <= memory_region->size, "Not enough space in region to allocate shared memory!");
+
+ shared_memory->backing_block = linheap_memory;
+ shared_memory->backing_block_offset = linheap_memory->size();
+ // Allocate some memory from the end of the linear heap for this region.
+ linheap_memory->insert(linheap_memory->end(), size, 0);
+ memory_region->used += size;
+
+ shared_memory->linear_heap_phys_address = Memory::FCRAM_PADDR + memory_region->base + shared_memory->backing_block_offset;
+
+ // Increase the amount of used linear heap memory for the owner process.
+ if (shared_memory->owner_process != nullptr) {
+ shared_memory->owner_process->linear_heap_used += size;
+ }
+
+ // Refresh the address mappings for the current process.
+ if (Kernel::g_current_process != nullptr) {
+ Kernel::g_current_process->vm_manager.RefreshMemoryBlockMappings(linheap_memory.get());
+ }
+ } else {
+ // TODO(Subv): What happens if an application tries to create multiple memory blocks pointing to the same address?
+ auto& vm_manager = shared_memory->owner_process->vm_manager;
+ // The memory is already available and mapped in the owner process.
+ auto vma = vm_manager.FindVMA(address)->second;
+ // Copy it over to our own storage
+ shared_memory->backing_block = std::make_shared<std::vector<u8>>(vma.backing_block->data() + vma.offset,
+ vma.backing_block->data() + vma.offset + size);
+ shared_memory->backing_block_offset = 0;
+ // Unmap the existing pages
+ vm_manager.UnmapRange(address, size);
+ // Map our own block into the address space
+ vm_manager.MapMemoryBlock(address, shared_memory->backing_block, 0, size, MemoryState::Shared);
+ // Reprotect the block with the new permissions
+ vm_manager.ReprotectRange(address, size, ConvertPermissions(permissions));
+ }
+
+ shared_memory->base_address = address;
return shared_memory;
}
-ResultCode SharedMemory::Map(VAddr address, MemoryPermission permissions,
- MemoryPermission other_permissions) {
+SharedPtr<SharedMemory> SharedMemory::CreateForApplet(std::shared_ptr<std::vector<u8>> heap_block, u32 offset, u32 size,
+ MemoryPermission permissions, MemoryPermission other_permissions, std::string name) {
+ SharedPtr<SharedMemory> shared_memory(new SharedMemory);
- if (base_address != 0) {
- LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s: already mapped at 0x%08X!",
- GetObjectId(), address, name.c_str(), base_address);
- // TODO: Verify error code with hardware
- return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel,
- ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
- }
+ shared_memory->owner_process = nullptr;
+ shared_memory->name = std::move(name);
+ shared_memory->size = size;
+ shared_memory->permissions = permissions;
+ shared_memory->other_permissions = other_permissions;
+ shared_memory->backing_block = heap_block;
+ shared_memory->backing_block_offset = offset;
+ shared_memory->base_address = Memory::HEAP_VADDR + offset;
- // TODO(Subv): Return E0E01BEE when permissions and other_permissions don't
- // match what was specified when the memory block was created.
+ return shared_memory;
+}
- // TODO(Subv): Return E0E01BEE when address should be 0.
- // Note: Find out when that's the case.
+ResultCode SharedMemory::Map(Process* target_process, VAddr address, MemoryPermission permissions,
+ MemoryPermission other_permissions) {
- if (fixed_address != 0) {
- if (address != 0 && address != fixed_address) {
- LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s: fixed_addres is 0x%08X!",
- GetObjectId(), address, name.c_str(), fixed_address);
- // TODO: Verify error code with hardware
- return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel,
- ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
- }
+ MemoryPermission own_other_permissions = target_process == owner_process ? this->permissions : this->other_permissions;
- // HACK(yuriks): This is only here to support the APT shared font mapping right now.
- // Later, this should actually map the memory block onto the address space.
- return RESULT_SUCCESS;
+ // Automatically allocated memory blocks can only be mapped with other_permissions = DontCare
+ if (base_address == 0 && other_permissions != MemoryPermission::DontCare) {
+ return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
}
- if (address < Memory::SHARED_MEMORY_VADDR || address + size >= Memory::SHARED_MEMORY_VADDR_END) {
- LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s outside of shared mem bounds!",
- GetObjectId(), address, name.c_str());
- // TODO: Verify error code with hardware
- return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel,
- ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
+ // Error out if the requested permissions don't match what the creator process allows.
+ if (static_cast<u32>(permissions) & ~static_cast<u32>(own_other_permissions)) {
+ LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s, permissions don't match",
+ GetObjectId(), address, name.c_str());
+ return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
}
- // TODO: Test permissions
+ // Heap-backed memory blocks can not be mapped with other_permissions = DontCare
+ if (base_address != 0 && other_permissions == MemoryPermission::DontCare) {
+ LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s, permissions don't match",
+ GetObjectId(), address, name.c_str());
+ return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
+ }
- // HACK: Since there's no way to write to the memory block without mapping it onto the game
- // process yet, at least initialize memory the first time it's mapped.
- if (address != this->base_address) {
- std::memset(Memory::GetPointer(address), 0, size);
+ // Error out if the provided permissions are not compatible with what the creator process needs.
+ if (other_permissions != MemoryPermission::DontCare &&
+ static_cast<u32>(this->permissions) & ~static_cast<u32>(other_permissions)) {
+ LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s, permissions don't match",
+ GetObjectId(), address, name.c_str());
+ return ResultCode(ErrorDescription::WrongPermission, ErrorModule::OS, ErrorSummary::WrongArgument, ErrorLevel::Permanent);
}
- this->base_address = address;
+ // TODO(Subv): Check for the Shared Device Mem flag in the creator process.
+ /*if (was_created_with_shared_device_mem && address != 0) {
+ return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
+ }*/
- return RESULT_SUCCESS;
-}
+ // TODO(Subv): The same process that created a SharedMemory object
+ // can not map it in its own address space unless it was created with addr=0, result 0xD900182C.
-ResultCode SharedMemory::Unmap(VAddr address) {
- if (base_address == 0) {
- // TODO(Subv): Verify what actually happens when you want to unmap a memory block that
- // was originally mapped with address = 0
- return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
+ if (address != 0) {
+ if (address < Memory::HEAP_VADDR || address + size >= Memory::SHARED_MEMORY_VADDR_END) {
+ LOG_ERROR(Kernel, "cannot map id=%u, address=0x%08X name=%s, invalid address",
+ GetObjectId(), address, name.c_str());
+ return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::OS,
+ ErrorSummary::InvalidArgument, ErrorLevel::Usage);
+ }
}
- if (base_address != address)
- return ResultCode(ErrorDescription::WrongAddress, ErrorModule::OS, ErrorSummary::InvalidState, ErrorLevel::Usage);
+ VAddr target_address = address;
- base_address = 0;
+ if (base_address == 0 && target_address == 0) {
+ // Calculate the address at which to map the memory block.
+ target_address = Memory::PhysicalToVirtualAddress(linear_heap_phys_address);
+ }
+
+ // Map the memory block into the target process
+ auto result = target_process->vm_manager.MapMemoryBlock(target_address, backing_block, backing_block_offset, size, MemoryState::Shared);
+ if (result.Failed()) {
+ LOG_ERROR(Kernel, "cannot map id=%u, target_address=0x%08X name=%s, error mapping to virtual memory",
+ GetObjectId(), target_address, name.c_str());
+ return result.Code();
+ }
- return RESULT_SUCCESS;
+ return target_process->vm_manager.ReprotectRange(target_address, size, ConvertPermissions(permissions));
}
-u8* SharedMemory::GetPointer(u32 offset) {
- if (base_address != 0)
- return Memory::GetPointer(base_address + offset);
+ResultCode SharedMemory::Unmap(Process* target_process, VAddr address) {
+ // TODO(Subv): Verify what happens if the application tries to unmap an address that is not mapped to a SharedMemory.
+ return target_process->vm_manager.UnmapRange(address, size);
+}
+
+VMAPermission SharedMemory::ConvertPermissions(MemoryPermission permission) {
+ u32 masked_permissions = static_cast<u32>(permission) & static_cast<u32>(MemoryPermission::ReadWriteExecute);
+ return static_cast<VMAPermission>(masked_permissions);
+};
- LOG_ERROR(Kernel_SVC, "memory block id=%u not mapped!", GetObjectId());
- return nullptr;
+u8* SharedMemory::GetPointer(u32 offset) {
+ return backing_block->data() + backing_block_offset + offset;
}
} // namespace
diff --git a/src/core/hle/kernel/shared_memory.h b/src/core/hle/kernel/shared_memory.h
index b51049ad0..0c404a9f8 100644
--- a/src/core/hle/kernel/shared_memory.h
+++ b/src/core/hle/kernel/shared_memory.h
@@ -9,6 +9,7 @@
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/process.h"
#include "core/hle/result.h"
namespace Kernel {
@@ -29,14 +30,29 @@ enum class MemoryPermission : u32 {
class SharedMemory final : public Object {
public:
/**
- * Creates a shared memory object
+ * Creates a shared memory object.
+ * @param owner_process Process that created this shared memory object.
* @param size Size of the memory block. Must be page-aligned.
* @param permissions Permission restrictions applied to the process which created the block.
* @param other_permissions Permission restrictions applied to other processes mapping the block.
+ * @param address The address from which to map the Shared Memory.
+ * @param region If the address is 0, the shared memory will be allocated in this region of the linear heap.
* @param name Optional object name, used for debugging purposes.
*/
- static SharedPtr<SharedMemory> Create(u32 size, MemoryPermission permissions,
- MemoryPermission other_permissions, std::string name = "Unknown");
+ static SharedPtr<SharedMemory> Create(SharedPtr<Process> owner_process, u32 size, MemoryPermission permissions,
+ MemoryPermission other_permissions, VAddr address = 0, MemoryRegion region = MemoryRegion::BASE, std::string name = "Unknown");
+
+ /**
+ * Creates a shared memory object from a block of memory managed by an HLE applet.
+ * @param heap_block Heap block of the HLE applet.
+ * @param offset The offset into the heap block that the SharedMemory will map.
+ * @param size Size of the memory block. Must be page-aligned.
+ * @param permissions Permission restrictions applied to the process which created the block.
+ * @param other_permissions Permission restrictions applied to other processes mapping the block.
+ * @param name Optional object name, used for debugging purposes.
+ */
+ static SharedPtr<SharedMemory> CreateForApplet(std::shared_ptr<std::vector<u8>> heap_block, u32 offset, u32 size,
+ MemoryPermission permissions, MemoryPermission other_permissions, std::string name = "Unknown Applet");
std::string GetTypeName() const override { return "SharedMemory"; }
std::string GetName() const override { return name; }
@@ -45,19 +61,27 @@ public:
HandleType GetHandleType() const override { return HANDLE_TYPE; }
/**
- * Maps a shared memory block to an address in system memory
+ * Converts the specified MemoryPermission into the equivalent VMAPermission.
+ * @param permission The MemoryPermission to convert.
+ */
+ static VMAPermission ConvertPermissions(MemoryPermission permission);
+
+ /**
+ * Maps a shared memory block to an address in the target process' address space
+ * @param target_process Process on which to map the memory block.
* @param address Address in system memory to map shared memory block to
* @param permissions Memory block map permissions (specified by SVC field)
* @param other_permissions Memory block map other permissions (specified by SVC field)
*/
- ResultCode Map(VAddr address, MemoryPermission permissions, MemoryPermission other_permissions);
+ ResultCode Map(Process* target_process, VAddr address, MemoryPermission permissions, MemoryPermission other_permissions);
/**
* Unmaps a shared memory block from the specified address in system memory
+ * @param target_process Process from which to umap the memory block.
* @param address Address in system memory where the shared memory block is mapped
* @return Result code of the unmap operation
*/
- ResultCode Unmap(VAddr address);
+ ResultCode Unmap(Process* target_process, VAddr address);
/**
* Gets a pointer to the shared memory block
@@ -66,10 +90,16 @@ public:
*/
u8* GetPointer(u32 offset = 0);
- /// Address of shared memory block in the process.
+ /// Process that created this shared memory block.
+ SharedPtr<Process> owner_process;
+ /// Address of shared memory block in the owner process if specified.
VAddr base_address;
- /// Fixed address to allow mapping to. Used for blocks created from the linear heap.
- VAddr fixed_address;
+ /// Physical address of the shared memory block in the linear heap if no address was specified during creation.
+ PAddr linear_heap_phys_address;
+ /// Backing memory for this shared memory block.
+ std::shared_ptr<std::vector<u8>> backing_block;
+ /// Offset into the backing block for this shared memory.
+ u32 backing_block_offset;
/// Size of the memory block. Page-aligned.
u32 size;
/// Permission restrictions applied to the process which created the block.
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 15:33:20 +0100