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Starting to wire up readfile.

This commit is contained in:
Ben Vanik 2013-10-16 00:23:05 -07:00
parent da2f7f1ea5
commit 803e4998de
9 changed files with 223 additions and 82 deletions
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16
src/xenia/kernel/modules/xboxkrnl/async_request.cc
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@ -13,24 +13,30 @@
#include <xenia/kernel/modules/xboxkrnl/objects/xevent.h>
using namespace std;
using namespace xe;
using namespace xe::kernel;
using namespace xe::kernel::xboxkrnl;
XAsyncRequest::XAsyncRequest(
XObject* object,
KernelState* kernel_state, XObject* object,
CompletionCallback callback, void* callback_context) :
object_(object),
kernel_state_(kernel_state), object_(object),
callback_(callback), callback_context_(callback_context),
wait_event_(0),
apc_routine_(0), apc_context_(0) {
object_->Retain();
}
XAsyncRequest::~XAsyncRequest() {
if (wait_event_) {
wait_event_->Release();
for (vector<XEvent*>::iterator it = wait_events_.begin();
it != wait_events_.end(); ++it) {
(*it)->Release();
}
object_->Release();
}
void XAsyncRequest::AddWaitEvent(XEvent* ev) {
ev->Retain();
wait_events_.push_back(ev);
}

11
src/xenia/kernel/modules/xboxkrnl/async_request.h
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@ -20,6 +20,7 @@ namespace xe {
namespace kernel {
namespace xboxkrnl {
class KernelState;
class XEvent;
class XObject;
@ -29,24 +30,24 @@ public:
typedef void (*CompletionCallback)(XAsyncRequest* request, void* context);
XAsyncRequest(
XObject* object,
KernelState* kernel_state, XObject* object,
CompletionCallback callback, void* callback_context);
virtual ~XAsyncRequest();
KernelState* kernel_state() const { return kernel_state_; }
XObject* object() const { return object_; }
XEvent* wait_event() const { return wait_event_; }
uint32_t apc_routine() const { return apc_routine_; }
uint32_t apc_context() const { return apc_context_; }
void AddWaitEvent(XEvent* ev);
// Complete(result)
protected:
KernelState* kernel_state_;
XObject* object_;
CompletionCallback callback_;
void* callback_context_;
XEvent* wait_event_;
std::vector<XEvent*> wait_events_;
uint32_t apc_routine_;
uint32_t apc_context_;
};

15
src/xenia/kernel/modules/xboxkrnl/fs/entry.h
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@ -13,10 +13,15 @@
#include <xenia/common.h>
#include <xenia/core.h>
#include <xenia/kernel/xbox.h>
namespace xe {
namespace kernel {
namespace xboxkrnl {
class XAsyncRequest;
namespace fs {
@ -67,6 +72,16 @@ public:
//virtual void Query() = 0;
X_STATUS Read(void* buffer, size_t buffer_length, size_t byte_offset,
size_t* out_bytes_read) {
return X_STATUS_NOT_IMPLEMENTED;
}
X_STATUS Read(void* buffer, size_t buffer_length, size_t byte_offset,
XAsyncRequest* request) {
// queue completion of failure
return X_STATUS_NOT_IMPLEMENTED;
}
virtual MemoryMapping* CreateMemoryMapping(
xe_file_mode file_mode, const size_t offset, const size_t length) = 0;
};

32
src/xenia/kernel/modules/xboxkrnl/objects/xfile.cc
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@ -9,6 +9,8 @@
#include <xenia/kernel/modules/xboxkrnl/objects/xfile.h>
#include <xenia/kernel/modules/xboxkrnl/async_request.h>
#include <xenia/kernel/modules/xboxkrnl/fs/entry.h>
#include <xenia/kernel/modules/xboxkrnl/objects/xevent.h>
@ -20,13 +22,41 @@ using namespace xe::kernel::xboxkrnl::fs;
XFile::XFile(KernelState* kernel_state, FileEntry* entry) :
entry_(entry),
position_(0),
XObject(kernel_state, kTypeFile) {
async_event_ = new XEvent(kernel_state);
async_event_->Initialize(false, false);
}
XFile::~XFile() {
// TODO(benvanik): signal that the file is closing?
async_event_->Set(0, false);
async_event_->Delete();
}
X_STATUS XFile::Wait(uint32_t wait_reason, uint32_t processor_mode,
uint32_t alertable, uint64_t* opt_timeout) {
// Wait until some async operation completes.
return async_event_->Wait(
wait_reason, processor_mode, alertable, opt_timeout);
}
X_STATUS XFile::Read(void* buffer, size_t buffer_length, size_t byte_offset,
size_t* out_bytes_read) {
if (byte_offset == -1) {
// Read from current position.
}
X_STATUS result = entry_->Read(buffer, buffer_length, byte_offset, out_bytes_read);
if (XSUCCEEDED(result)) {
position_ += *out_bytes_read;
}
return result;
}
X_STATUS XFile::Read(void* buffer, size_t buffer_length, size_t byte_offset,
XAsyncRequest* request) {
return X_STATUS_ACCESS_DENIED;
// Also tack on our event so that any waiters wake.
request->AddWaitEvent(async_event_);
position_ = byte_offset;
return entry_->Read(buffer, buffer_length, byte_offset, request);
}

22
src/xenia/kernel/modules/xboxkrnl/objects/xfile.h
View File

@ -13,25 +13,41 @@
#include <xenia/kernel/modules/xboxkrnl/xobject.h>
#include <xenia/kernel/xbox.h>
#include <xenia/kernel/modules/xboxkrnl/async_request.h>
#include <xenia/kernel/modules/xboxkrnl/fs/entry.h>
namespace xe {
namespace kernel {
namespace xboxkrnl {
class XAsyncRequest;
class XEvent;
namespace fs {
class FileEntry;
}
class XFile : public XObject {
public:
XFile(KernelState* kernel_state, fs::FileEntry* entry);
virtual ~XFile();
virtual ~XFile();
virtual X_STATUS Wait(uint32_t wait_reason, uint32_t processor_mode,
uint32_t alertable, uint64_t* opt_timeout);
// TODO(benvanik): Create/Open
X_STATUS Read(void* buffer, size_t buffer_length, size_t byte_offset,
size_t* out_bytes_read);
X_STATUS Read(void* buffer, size_t buffer_length, size_t byte_offset,
XAsyncRequest* request);
private:
fs::FileEntry* entry_;
XEvent* async_event_;
// TODO(benvanik): create flags, open state, etc.
size_t position_;
};

93
src/xenia/kernel/modules/xboxkrnl/xboxkrnl_io.cc
View File

@ -10,8 +10,10 @@
#include <xenia/kernel/modules/xboxkrnl/xboxkrnl_io.h>
#include <xenia/kernel/shim_utils.h>
#include <xenia/kernel/modules/xboxkrnl/async_request.h>
#include <xenia/kernel/modules/xboxkrnl/kernel_state.h>
#include <xenia/kernel/modules/xboxkrnl/xboxkrnl_private.h>
#include <xenia/kernel/modules/xboxkrnl/objects/xevent.h>
#include <xenia/kernel/modules/xboxkrnl/objects/xfile.h>
@ -105,6 +107,16 @@ SHIM_CALL NtOpenFile_shim(
SHIM_SET_RETURN(X_STATUS_NO_SUCH_FILE);
}
class xeNtReadFileState {
public:
uint32_t x;
};
void xeNtReadFileCompleted(XAsyncRequest* request, xeNtReadFileState* state) {
// TODO(benvanik): set io_status_block_ptr
delete request;
delete state;
}
SHIM_CALL NtReadFile_shim(
xe_ppc_state_t* ppc_state, KernelState* state) {
uint32_t file_handle = SHIM_GET_ARG_32(0);
@ -115,10 +127,10 @@ SHIM_CALL NtReadFile_shim(
uint32_t buffer = SHIM_GET_ARG_32(5);
uint32_t buffer_length = SHIM_GET_ARG_32(6);
uint32_t byte_offset_ptr = SHIM_GET_ARG_32(7);
uint32_t key = SHIM_GET_ARG_32(8);
size_t byte_offset = byte_offset_ptr ? SHIM_MEM_64(byte_offset_ptr) : 0;
XELOGD(
"NtReadFile(%.8X, %.8X, %.8X, %.8X, %.8X, %.8X, %d, %d, %.8X)",
"NtReadFile(%.8X, %.8X, %.8X, %.8X, %.8X, %.8X, %d, %d)",
file_handle,
event_handle,
apc_routine_ptr,
@ -126,24 +138,69 @@ SHIM_CALL NtReadFile_shim(
io_status_block_ptr,
buffer,
buffer_length,
byte_offset_ptr,
key);
byte_offset_ptr);
// Async not supported yet.
XEASSERTNULL(apc_routine_ptr);
X_STATUS result = X_STATUS_INVALID_HANDLE;
X_STATUS result = X_STATUS_SUCCESS;
uint32_t info = 0;
XFile* file = NULL;
result = state->object_table()->GetObject(
file_handle, (XObject**)&file);
if (result == X_STATUS_SUCCESS) {
// TODO(benvanik): read!
// Grab event to signal.
XEvent* ev = NULL;
bool signal_event = false;
if (event_handle) {
result = state->object_table()->GetObject(
event_handle, (XObject**)&ev);
}
file->Release();
result = X_STATUS_SUCCESS;
info = 0; // number of bytes read
// Grab file.
XFile* file = NULL;
if (XSUCCEEDED(result)) {
result = state->object_table()->GetObject(
file_handle, (XObject**)&file);
}
// Execute read.
if (XSUCCEEDED(result)) {
// Reset event before we begin.
if (ev) {
ev->Reset();
}
// TODO(benvanik): async path.
if (true) {
// Synchronous request.
if (byte_offset == 0xFFFFFFFFfffffffe) {
// FILE_USE_FILE_POINTER_POSITION
byte_offset = -1;
}
// Read now.
size_t bytes_read = 0;
result = file->Read(
SHIM_MEM_ADDR(buffer), buffer_length, byte_offset,
&bytes_read);
if (XSUCCEEDED(result)) {
info = (int32_t)bytes_read;
}
// Mark that we should signal the event now. We do this after
// we have written the info out.
signal_event = true;
} else {
// X_STATUS_PENDING if not returning immediately.
// XFile is waitable and signalled after each async req completes.
// reset the input event (->Reset())
/*xeNtReadFileState* call_state = new xeNtReadFileState();
XAsyncRequest* request = new XAsyncRequest(
state, file,
(XAsyncRequest::CompletionCallback)xeNtReadFileCompleted,
call_state);*/
//result = file->Read(buffer, buffer_length, byte_offset, request);
result = X_STATUS_PENDING;
info = 0;
}
}
if (io_status_block_ptr) {
@ -151,6 +208,16 @@ SHIM_CALL NtReadFile_shim(
SHIM_SET_MEM_32(io_status_block_ptr + 4, info); // Information
}
if (file) {
file->Release();
}
if (ev) {
if (signal_event) {
ev->Set(0, false);
}
ev->Release();
}
SHIM_SET_RETURN(result);
}

106
src/xenia/kernel/modules/xboxkrnl/xobject.cc
View File

@ -73,6 +73,10 @@ void XObject::Release() {
}
}
X_STATUS XObject::Delete() {
return shared_kernel_state_->object_table()->RemoveHandle(handle_);
}
X_STATUS XObject::Wait(uint32_t wait_reason, uint32_t processor_mode,
uint32_t alertable, uint64_t* opt_timeout) {
return X_STATUS_SUCCESS;
@ -85,15 +89,15 @@ void XObject::LockType() {
void XObject::UnlockType() {
xe_mutex_unlock(shared_kernel_state_->object_mutex_);
}
XObject* XObject::GetObject(KernelState* kernel_state, void* native_ptr) {
// Unfortunately the XDK seems to inline some KeInitialize calls, meaning
// we never see it and just randomly start getting passed events/timers/etc.
// Luckily it seems like all other calls (Set/Reset/Wait/etc) are used and
// we don't have to worry about PPC code poking the struct. Because of that,
// we init on first use, store our pointer in the struct, and dereference it
// each time.
// We identify this by checking the low bit of wait_list_blink - if it's 1,
XObject* XObject::GetObject(KernelState* kernel_state, void* native_ptr) {
// Unfortunately the XDK seems to inline some KeInitialize calls, meaning
// we never see it and just randomly start getting passed events/timers/etc.
// Luckily it seems like all other calls (Set/Reset/Wait/etc) are used and
// we don't have to worry about PPC code poking the struct. Because of that,
// we init on first use, store our pointer in the struct, and dereference it
// each time.
// We identify this by checking the low bit of wait_list_blink - if it's 1,
// we have already put our pointer in there.
XObject::LockType();
@ -115,46 +119,46 @@ XObject* XObject::GetObject(KernelState* kernel_state, void* native_ptr) {
XObject::UnlockType();
return object;
} else {
// First use, create new.
// http://www.nirsoft.net/kernel_struct/vista/KOBJECTS.html
XObject* object = NULL;
switch (header.type_flags & 0xFF) {
case 0: // EventNotificationObject
case 1: // EventSynchronizationObject
{
XEvent* ev = new XEvent(kernel_state);
ev->InitializeNative(native_ptr, header);
object = ev;
}
break;
case 2: // MutantObject
case 3: // ProcessObject
case 4: // QueueObject
case 5: // SemaphoreObject
case 6: // ThreadObject
case 7: // GateObject
case 8: // TimerNotificationObject
case 9: // TimerSynchronizationObject
case 18: // ApcObject
case 19: // DpcObject
case 20: // DeviceQueueObject
case 21: // EventPairObject
case 22: // InterruptObject
case 23: // ProfileObject
case 24: // ThreadedDpcObject
default:
XEASSERTALWAYS();
XObject::UnlockType();
return NULL;
}
// Stash pointer in struct.
uint64_t object_ptr = reinterpret_cast<uint64_t>(object);
object_ptr |= 0x1;
header_be->wait_list_flink = XESWAP32((uint32_t)(object_ptr >> 32));
header_be->wait_list_blink = XESWAP32((uint32_t)(object_ptr & 0xFFFFFFFF));
XObject::UnlockType();
return object;
}
// First use, create new.
// http://www.nirsoft.net/kernel_struct/vista/KOBJECTS.html
XObject* object = NULL;
switch (header.type_flags & 0xFF) {
case 0: // EventNotificationObject
case 1: // EventSynchronizationObject
{
XEvent* ev = new XEvent(kernel_state);
ev->InitializeNative(native_ptr, header);
object = ev;
}
break;
case 2: // MutantObject
case 3: // ProcessObject
case 4: // QueueObject
case 5: // SemaphoreObject
case 6: // ThreadObject
case 7: // GateObject
case 8: // TimerNotificationObject
case 9: // TimerSynchronizationObject
case 18: // ApcObject
case 19: // DpcObject
case 20: // DeviceQueueObject
case 21: // EventPairObject
case 22: // InterruptObject
case 23: // ProfileObject
case 24: // ThreadedDpcObject
default:
XEASSERTALWAYS();
XObject::UnlockType();
return NULL;
}
// Stash pointer in struct.
uint64_t object_ptr = reinterpret_cast<uint64_t>(object);
object_ptr |= 0x1;
header_be->wait_list_flink = XESWAP32((uint32_t)(object_ptr >> 32));
header_be->wait_list_blink = XESWAP32((uint32_t)(object_ptr & 0xFFFFFFFF));
XObject::UnlockType();
return object;
}
}

3
src/xenia/kernel/modules/xboxkrnl/xobject.h
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@ -27,7 +27,7 @@ namespace kernel {
namespace xboxkrnl {
// http://www.nirsoft.net/kernel_struct/vista/DISPATCHER_HEADER.html
// http://www.nirsoft.net/kernel_struct/vista/DISPATCHER_HEADER.html
typedef struct {
uint32_t type_flags;
uint32_t signal_state;
@ -57,6 +57,7 @@ public:
bool ReleaseHandle();
void Retain();
void Release();
X_STATUS Delete();
// Reference()
// Dereference()

7
src/xenia/kernel/xbox.h
View File

@ -30,9 +30,10 @@ typedef uint32_t X_STATUS;
#define XSUCCEEDED(s) !XFAILED(s)
#define X_STATUS_SUCCESS ((uint32_t)0x00000000L)
#define X_STATUS_ABANDONED_WAIT_0 ((uint32_t)0x00000080L)
#define X_STATUS_USER_APC ((uint32_t)0x000000C0L)
#define X_STATUS_ALERTED ((uint32_t)0x00000101L)
#define X_STATUS_TIMEOUT ((uint32_t)0x00000102L)
#define X_STATUS_USER_APC ((uint32_t)0x000000C0L)
#define X_STATUS_ALERTED ((uint32_t)0x00000101L)
#define X_STATUS_TIMEOUT ((uint32_t)0x00000102L)
#define X_STATUS_PENDING ((uint32_t)0x00000103L)
#define X_STATUS_UNSUCCESSFUL ((uint32_t)0xC0000001L)
#define X_STATUS_NOT_IMPLEMENTED ((uint32_t)0xC0000002L)
#define X_STATUS_ACCESS_VIOLATION ((uint32_t)0xC0000005L)