summaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/core/hle/applets/mii_selector.cpp4
-rw-r--r--src/core/hle/applets/swkbd.cpp4
-rw-r--r--src/core/hle/kernel/shared_memory.cpp116
-rw-r--r--src/core/hle/kernel/shared_memory.h28
-rw-r--r--src/core/hle/service/apt/apt.cpp38
-rw-r--r--src/core/hle/service/csnd_snd.cpp13
-rw-r--r--src/core/hle/service/gsp_gpu.cpp5
-rw-r--r--src/core/hle/service/hid/hid.cpp5
-rw-r--r--src/core/hle/service/ir/ir.cpp5
-rw-r--r--src/core/hle/svc.cpp47
10 files changed, 147 insertions, 118 deletions
diff --git a/src/core/hle/applets/mii_selector.cpp b/src/core/hle/applets/mii_selector.cpp
index b4456ca90..7f174f3e6 100644
--- a/src/core/hle/applets/mii_selector.cpp
+++ b/src/core/hle/applets/mii_selector.cpp
@@ -36,8 +36,8 @@ ResultCode MiiSelector::ReceiveParameter(const Service::APT::MessageParameter& p
memcpy(&capture_info, parameter.data, sizeof(capture_info));
using Kernel::MemoryPermission;
- framebuffer_memory = Kernel::SharedMemory::Create(capture_info.size, MemoryPermission::ReadWrite,
- MemoryPermission::ReadWrite, "MiiSelector Memory");
+ framebuffer_memory = Kernel::SharedMemory::Create(nullptr, capture_info.size, MemoryPermission::ReadWrite,
+ MemoryPermission::ReadWrite, 0, Kernel::MemoryRegion::BASE, "MiiSelector Memory");
// Send the response message with the newly created SharedMemory
Service::APT::MessageParameter result;
diff --git a/src/core/hle/applets/swkbd.cpp b/src/core/hle/applets/swkbd.cpp
index 87238aa1c..e0c134182 100644
--- a/src/core/hle/applets/swkbd.cpp
+++ b/src/core/hle/applets/swkbd.cpp
@@ -40,8 +40,8 @@ ResultCode SoftwareKeyboard::ReceiveParameter(Service::APT::MessageParameter con
memcpy(&capture_info, parameter.data, sizeof(capture_info));
using Kernel::MemoryPermission;
- framebuffer_memory = Kernel::SharedMemory::Create(capture_info.size, MemoryPermission::ReadWrite,
- MemoryPermission::ReadWrite, "SoftwareKeyboard Memory");
+ framebuffer_memory = Kernel::SharedMemory::Create(nullptr, capture_info.size, MemoryPermission::ReadWrite,
+ MemoryPermission::ReadWrite, 0, Kernel::MemoryRegion::BASE, "SoftwareKeyboard Memory");
// Send the response message with the newly created SharedMemory
Service::APT::MessageParameter result;
diff --git a/src/core/hle/kernel/shared_memory.cpp b/src/core/hle/kernel/shared_memory.cpp
index d90f0f00f..6f731f317 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 +15,94 @@ 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;
+
+ // 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 {
+ 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);
+ // 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);
+ }
+
+ shared_memory->base_address = address;
return shared_memory;
}
-ResultCode SharedMemory::Map(VAddr address, MemoryPermission permissions,
+ResultCode SharedMemory::Map(Process* target_process, VAddr address, MemoryPermission permissions,
MemoryPermission other_permissions) {
- 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);
- }
-
// TODO(Subv): Return E0E01BEE when permissions and other_permissions don't
// match what was specified when the memory block was created.
- // TODO(Subv): Return E0E01BEE when address should be 0.
- // Note: Find out when that's the case.
+ // 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);
+ }*/
- 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);
- }
-
- // 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;
- }
+ // 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.
- 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!",
+ 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());
- // TODO: Verify error code with hardware
- return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel,
- ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
+ return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::OS,
+ ErrorSummary::InvalidArgument, ErrorLevel::Usage);
}
- // TODO: Test permissions
+ VAddr target_address = address;
- // 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);
+ 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);
}
- this->base_address = address;
+ // Map the memory block into the target process
+ target_process->vm_manager.MapMemoryBlock(target_address, backing_block, backing_block_offset, size, MemoryState::Shared);
return RESULT_SUCCESS;
}
-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 (base_address != address)
- return ResultCode(ErrorDescription::WrongAddress, ErrorModule::OS, ErrorSummary::InvalidState, ErrorLevel::Usage);
-
- base_address = 0;
-
- return RESULT_SUCCESS;
+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);
}
u8* SharedMemory::GetPointer(u32 offset) {
- if (base_address != 0)
- return Memory::GetPointer(base_address + offset);
-
- LOG_ERROR(Kernel_SVC, "memory block id=%u not mapped!", GetObjectId());
- return nullptr;
+ 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..b442cb764 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 {
@@ -30,13 +31,16 @@ class SharedMemory final : public Object {
public:
/**
* 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");
std::string GetTypeName() const override { return "SharedMemory"; }
std::string GetName() const override { return name; }
@@ -45,19 +49,21 @@ public:
HandleType GetHandleType() const override { return HANDLE_TYPE; }
/**
- * Maps a shared memory block to an address in system memory
+ * 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 +72,16 @@ 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.
diff --git a/src/core/hle/service/apt/apt.cpp b/src/core/hle/service/apt/apt.cpp
index 6d72e8188..e7b8f5305 100644
--- a/src/core/hle/service/apt/apt.cpp
+++ b/src/core/hle/service/apt/apt.cpp
@@ -37,8 +37,6 @@ static Kernel::SharedPtr<Kernel::Mutex> lock;
static Kernel::SharedPtr<Kernel::Event> notification_event; ///< APT notification event
static Kernel::SharedPtr<Kernel::Event> parameter_event; ///< APT parameter event
-static std::shared_ptr<std::vector<u8>> shared_font;
-
static u32 cpu_percent; ///< CPU time available to the running application
/// Parameter data to be returned in the next call to Glance/ReceiveParameter
@@ -74,23 +72,14 @@ void Initialize(Service::Interface* self) {
void GetSharedFont(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
- if (shared_font != nullptr) {
- // TODO(yuriks): This is a hack to keep this working right now even with our completely
- // broken shared memory system.
- shared_font_mem->fixed_address = SHARED_FONT_VADDR;
- Kernel::g_current_process->vm_manager.MapMemoryBlock(shared_font_mem->fixed_address,
- shared_font, 0, shared_font_mem->size, Kernel::MemoryState::Shared);
-
- cmd_buff[0] = IPC::MakeHeader(0x44, 2, 2);
- cmd_buff[1] = RESULT_SUCCESS.raw; // No error
- cmd_buff[2] = SHARED_FONT_VADDR;
- cmd_buff[3] = IPC::MoveHandleDesc();
- cmd_buff[4] = Kernel::g_handle_table.Create(shared_font_mem).MoveFrom();
- } else {
- cmd_buff[0] = IPC::MakeHeader(0x44, 1, 0);
- cmd_buff[1] = -1; // Generic error (not really possible to verify this on hardware)
- LOG_ERROR(Kernel_SVC, "called, but %s has not been loaded!", SHARED_FONT);
- }
+ cmd_buff[0] = IPC::MakeHeader(0x44, 2, 2);
+ cmd_buff[1] = RESULT_SUCCESS.raw; // No error
+ // Since the SharedMemory interface doesn't provide the address at which the memory was allocated,
+ // the APT service calculates this address by scanning the entire address space (using svcQueryMemory)
+ // and searches for an allocation of the same size as the Shared Font.
+ cmd_buff[2] = Memory::PhysicalToVirtualAddress(shared_font_mem->linear_heap_phys_address);
+ cmd_buff[3] = IPC::MoveHandleDesc();
+ cmd_buff[4] = Kernel::g_handle_table.Create(shared_font_mem).MoveFrom();
}
void NotifyToWait(Service::Interface* self) {
@@ -433,14 +422,12 @@ void Init() {
FileUtil::IOFile file(filepath, "rb");
if (file.IsOpen()) {
- // Read shared font data
- shared_font = std::make_shared<std::vector<u8>>((size_t)file.GetSize());
- file.ReadBytes(shared_font->data(), shared_font->size());
-
// Create shared font memory object
using Kernel::MemoryPermission;
- shared_font_mem = Kernel::SharedMemory::Create(3 * 1024 * 1024, // 3MB
- MemoryPermission::ReadWrite, MemoryPermission::Read, "APT_U:shared_font_mem");
+ shared_font_mem = Kernel::SharedMemory::Create(nullptr, 0x332000, // 3272 KB
+ MemoryPermission::ReadWrite, MemoryPermission::Read, 0, Kernel::MemoryRegion::SYSTEM, "APT:SharedFont");
+ // Read shared font data
+ file.ReadBytes(shared_font_mem->GetPointer(), file.GetSize());
} else {
LOG_WARNING(Service_APT, "Unable to load shared font: %s", filepath.c_str());
shared_font_mem = nullptr;
@@ -459,7 +446,6 @@ void Init() {
}
void Shutdown() {
- shared_font = nullptr;
shared_font_mem = nullptr;
lock = nullptr;
notification_event = nullptr;
diff --git a/src/core/hle/service/csnd_snd.cpp b/src/core/hle/service/csnd_snd.cpp
index 6318bf2a7..d2bb8941c 100644
--- a/src/core/hle/service/csnd_snd.cpp
+++ b/src/core/hle/service/csnd_snd.cpp
@@ -3,6 +3,7 @@
// Refer to the license.txt file included.
#include <cstring>
+#include "common/alignment.h"
#include "core/hle/hle.h"
#include "core/hle/kernel/mutex.h"
#include "core/hle/kernel/shared_memory.h"
@@ -41,14 +42,16 @@ static Kernel::SharedPtr<Kernel::Mutex> mutex = nullptr;
void Initialize(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
- shared_memory = Kernel::SharedMemory::Create(cmd_buff[1],
- Kernel::MemoryPermission::ReadWrite,
- Kernel::MemoryPermission::ReadWrite, "CSNDSharedMem");
+ u32 size = Common::AlignUp(cmd_buff[1], Memory::PAGE_SIZE);
+ using Kernel::MemoryPermission;
+ shared_memory = Kernel::SharedMemory::Create(nullptr, size,
+ MemoryPermission::ReadWrite, MemoryPermission::ReadWrite,
+ 0, Kernel::MemoryRegion::BASE, "CSND:SharedMemory");
mutex = Kernel::Mutex::Create(false);
- cmd_buff[1] = 0;
- cmd_buff[2] = 0x4000000;
+ cmd_buff[1] = RESULT_SUCCESS.raw;
+ cmd_buff[2] = IPC::MoveHandleDesc(2);
cmd_buff[3] = Kernel::g_handle_table.Create(mutex).MoveFrom();
cmd_buff[4] = Kernel::g_handle_table.Create(shared_memory).MoveFrom();
}
diff --git a/src/core/hle/service/gsp_gpu.cpp b/src/core/hle/service/gsp_gpu.cpp
index b4c146e08..8ded9b09b 100644
--- a/src/core/hle/service/gsp_gpu.cpp
+++ b/src/core/hle/service/gsp_gpu.cpp
@@ -335,8 +335,9 @@ static void RegisterInterruptRelayQueue(Service::Interface* self) {
g_interrupt_event->name = "GSP_GPU::interrupt_event";
using Kernel::MemoryPermission;
- g_shared_memory = Kernel::SharedMemory::Create(0x1000, MemoryPermission::ReadWrite,
- MemoryPermission::ReadWrite, "GSPSharedMem");
+ g_shared_memory = Kernel::SharedMemory::Create(nullptr, 0x1000,
+ MemoryPermission::ReadWrite, MemoryPermission::ReadWrite,
+ 0, Kernel::MemoryRegion::BASE, "GSP:SharedMemory");
Handle shmem_handle = Kernel::g_handle_table.Create(g_shared_memory).MoveFrom();
diff --git a/src/core/hle/service/hid/hid.cpp b/src/core/hle/service/hid/hid.cpp
index 1053d0f40..d216cecb4 100644
--- a/src/core/hle/service/hid/hid.cpp
+++ b/src/core/hle/service/hid/hid.cpp
@@ -280,8 +280,9 @@ void Init() {
AddService(new HID_SPVR_Interface);
using Kernel::MemoryPermission;
- shared_mem = SharedMemory::Create(0x1000, MemoryPermission::ReadWrite,
- MemoryPermission::Read, "HID:SharedMem");
+ shared_mem = SharedMemory::Create(nullptr, 0x1000,
+ MemoryPermission::ReadWrite, MemoryPermission::Read,
+ 0, Kernel::MemoryRegion::BASE, "HID:SharedMemory");
next_pad_index = 0;
next_touch_index = 0;
diff --git a/src/core/hle/service/ir/ir.cpp b/src/core/hle/service/ir/ir.cpp
index 505c441c6..079a87e48 100644
--- a/src/core/hle/service/ir/ir.cpp
+++ b/src/core/hle/service/ir/ir.cpp
@@ -94,8 +94,9 @@ void Init() {
AddService(new IR_User_Interface);
using Kernel::MemoryPermission;
- shared_memory = SharedMemory::Create(0x1000, Kernel::MemoryPermission::ReadWrite,
- Kernel::MemoryPermission::ReadWrite, "IR:SharedMemory");
+ shared_memory = SharedMemory::Create(nullptr, 0x1000,
+ Kernel::MemoryPermission::ReadWrite, Kernel::MemoryPermission::ReadWrite,
+ 0, Kernel::MemoryRegion::BASE, "IR:SharedMemory");
transfer_shared_memory = nullptr;
// Create event handle(s)
diff --git a/src/core/hle/svc.cpp b/src/core/hle/svc.cpp
index 60c8747f3..701dffef3 100644
--- a/src/core/hle/svc.cpp
+++ b/src/core/hle/svc.cpp
@@ -160,8 +160,6 @@ static ResultCode MapMemoryBlock(Handle handle, u32 addr, u32 permissions, u32 o
LOG_TRACE(Kernel_SVC, "called memblock=0x%08X, addr=0x%08X, mypermissions=0x%08X, otherpermission=%d",
handle, addr, permissions, other_permissions);
- // TODO(Subv): The same process that created a SharedMemory object can not map it in its own address space
-
SharedPtr<SharedMemory> shared_memory = Kernel::g_handle_table.Get<SharedMemory>(handle);
if (shared_memory == nullptr)
return ERR_INVALID_HANDLE;
@@ -176,7 +174,7 @@ static ResultCode MapMemoryBlock(Handle handle, u32 addr, u32 permissions, u32 o
case MemoryPermission::WriteExecute:
case MemoryPermission::ReadWriteExecute:
case MemoryPermission::DontCare:
- return shared_memory->Map(addr, permissions_type,
+ return shared_memory->Map(Kernel::g_current_process.get(), addr, permissions_type,
static_cast<MemoryPermission>(other_permissions));
default:
LOG_ERROR(Kernel_SVC, "unknown permissions=0x%08X", permissions);
@@ -196,7 +194,7 @@ static ResultCode UnmapMemoryBlock(Handle handle, u32 addr) {
if (shared_memory == nullptr)
return ERR_INVALID_HANDLE;
- return shared_memory->Unmap(addr);
+ return shared_memory->Unmap(Kernel::g_current_process.get(), addr);
}
/// Connect to an OS service given the port name, returns the handle to the port to out
@@ -790,18 +788,43 @@ static ResultCode CreateMemoryBlock(Handle* out_handle, u32 addr, u32 size, u32
if (size % Memory::PAGE_SIZE != 0)
return ResultCode(ErrorDescription::MisalignedSize, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
- // TODO(Subv): Return E0A01BF5 if the address is not in the application's heap
-
- // TODO(Subv): Implement this function properly
+ SharedPtr<SharedMemory> shared_memory = nullptr;
using Kernel::MemoryPermission;
- SharedPtr<SharedMemory> shared_memory = SharedMemory::Create(size,
- (MemoryPermission)my_permission, (MemoryPermission)other_permission);
- // Map the SharedMemory to the specified address
- shared_memory->base_address = addr;
+ auto VerifyPermissions = [](MemoryPermission permission) {
+ // SharedMemory blocks can not be created with Execute permissions
+ switch (permission) {
+ case MemoryPermission::None:
+ case MemoryPermission::Read:
+ case MemoryPermission::Write:
+ case MemoryPermission::ReadWrite:
+ return true;
+ default:
+ return false;
+ }
+ };
+
+ if (!VerifyPermissions(static_cast<MemoryPermission>(my_permission)) ||
+ !VerifyPermissions(static_cast<MemoryPermission>(other_permission)))
+ return ResultCode(ErrorDescription::InvalidCombination, ErrorModule::OS,
+ ErrorSummary::InvalidArgument, ErrorLevel::Usage);
+
+ if (addr < Memory::PROCESS_IMAGE_VADDR || addr + size > Memory::SHARED_MEMORY_VADDR_END) {
+ return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::OS, ErrorSummary::InvalidArgument, ErrorLevel::Usage);
+ }
+
+ // When trying to create a memory block with address = 0,
+ // if the process has the Shared Device Memory flag in the exheader,
+ // then we have to allocate from the same region as the caller process instead of the BASE region.
+ Kernel::MemoryRegion region = Kernel::MemoryRegion::BASE;
+ if (addr == 0 && Kernel::g_current_process->flags.shared_device_mem)
+ region = Kernel::g_current_process->flags.memory_region;
+
+ shared_memory = SharedMemory::Create(Kernel::g_current_process, size,
+ static_cast<MemoryPermission>(my_permission), static_cast<MemoryPermission>(other_permission), addr, region);
CASCADE_RESULT(*out_handle, Kernel::g_handle_table.Create(std::move(shared_memory)));
- LOG_WARNING(Kernel_SVC, "(STUBBED) called addr=0x%08X", addr);
+ LOG_WARNING(Kernel_SVC, "called addr=0x%08X", addr);
return RESULT_SUCCESS;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 14:17:35 +0100