[PATCH v3 4/4] ntdll: Implement RtlLocateLegacyContext().
Paul Gofman
pgofman at codeweavers.com
Wed Aug 26 06:31:18 CDT 2020
Signed-off-by: Paul Gofman <pgofman at codeweavers.com>
---
.../api-ms-win-core-xstate-l1-1-0.spec | 2 +-
dlls/ntdll/exception.c | 11 +++++++++++
dlls/ntdll/ntdll.spec | 1 +
dlls/ntdll/tests/exception.c | 14 ++++++++++++++
dlls/ntoskrnl.exe/ntoskrnl.exe.spec | 1 +
include/ddk/wdm.h | 1 +
6 files changed, 29 insertions(+), 1 deletion(-)
diff --git a/dlls/api-ms-win-core-xstate-l1-1-0/api-ms-win-core-xstate-l1-1-0.spec b/dlls/api-ms-win-core-xstate-l1-1-0/api-ms-win-core-xstate-l1-1-0.spec
index 4d8d5803871..b933eca226f 100644
--- a/dlls/api-ms-win-core-xstate-l1-1-0/api-ms-win-core-xstate-l1-1-0.spec
+++ b/dlls/api-ms-win-core-xstate-l1-1-0/api-ms-win-core-xstate-l1-1-0.spec
@@ -4,5 +4,5 @@
@ stub RtlGetExtendedFeaturesMask
@ stdcall RtlInitializeExtendedContext(ptr long ptr) ntdll.RtlInitializeExtendedContext
@ stdcall RtlLocateExtendedFeature(ptr long ptr) ntdll.RtlLocateExtendedFeature
-@ stub RtlLocateLegacyContext
+@ stdcall RtlLocateLegacyContext(ptr ptr) ntdll.RtlLocateLegacyContext
@ stub RtlSetExtendedFeaturesMask
diff --git a/dlls/ntdll/exception.c b/dlls/ntdll/exception.c
index 6b315a47be3..c6df36953e9 100644
--- a/dlls/ntdll/exception.c
+++ b/dlls/ntdll/exception.c
@@ -848,3 +848,14 @@ void * WINAPI RtlLocateExtendedFeature( CONTEXT_EX *context_ex, ULONG feature_id
{
return RtlLocateExtendedFeature2( context_ex, feature_id, &user_shared_data->XState, length );
}
+
+/**********************************************************************
+ * RtlLocateLegacyContext (NTDLL.@)
+ */
+void * WINAPI RtlLocateLegacyContext( CONTEXT_EX *context_ex, ULONG *length )
+{
+ if (length)
+ *length = context_ex->Legacy.Length;
+
+ return (BYTE *)context_ex + context_ex->Legacy.Offset;
+}
diff --git a/dlls/ntdll/ntdll.spec b/dlls/ntdll/ntdll.spec
index c70bb44c47b..e3c0a9cf5f9 100644
--- a/dlls/ntdll/ntdll.spec
+++ b/dlls/ntdll/ntdll.spec
@@ -828,6 +828,7 @@
@ stdcall RtlLocaleNameToLcid(wstr ptr long)
@ stdcall RtlLocateExtendedFeature(ptr long ptr)
@ stdcall RtlLocateExtendedFeature2(ptr long ptr ptr)
+@ stdcall RtlLocateLegacyContext(ptr ptr)
# @ stub RtlLockBootStatusData
@ stdcall RtlLockHeap(long)
# @ stub RtlLockMemoryStreamRegion
diff --git a/dlls/ntdll/tests/exception.c b/dlls/ntdll/tests/exception.c
index 6e8806c0ce2..95b2631eb81 100644
--- a/dlls/ntdll/tests/exception.c
+++ b/dlls/ntdll/tests/exception.c
@@ -52,6 +52,7 @@ static NTSTATUS (WINAPI *pRtlInitializeExtendedContext)(void *context, ULONG co
static NTSTATUS (WINAPI *pRtlInitializeExtendedContext2)(void *context, ULONG context_flags, CONTEXT_EX **context_ex,
ULONG64 compaction_mask);
static void * (WINAPI *pRtlLocateExtendedFeature)(CONTEXT_EX *context_ex, ULONG feature_id, ULONG *length);
+static void * (WINAPI *pRtlLocateLegacyContext)(CONTEXT_EX *context_ex, ULONG *length);
static NTSTATUS (WINAPI *pNtReadVirtualMemory)(HANDLE, const void*, void*, SIZE_T, SIZE_T*);
static NTSTATUS (WINAPI *pNtTerminateProcess)(HANDLE handle, LONG exit_code);
static NTSTATUS (WINAPI *pNtQueryInformationProcess)(HANDLE, PROCESSINFOCLASS, PVOID, ULONG, PULONG);
@@ -6301,6 +6302,18 @@ static void test_extended_context(void)
ok(!context_ex->XState.Length,
"Got unexpected Length %#x, flags %#x.\n", context_ex->XState.Length, flags);
+ if (0)
+ {
+ /* Crashes on Windows. */
+ pRtlLocateLegacyContext(NULL, NULL);
+ }
+ p = pRtlLocateLegacyContext(context_ex, NULL);
+ ok(p == context, "Got unexpected p %p, flags %#x.\n", p, flags);
+ length2 = 0xdeadbeef;
+ p = pRtlLocateLegacyContext(context_ex, &length2);
+ ok(p == context && length2 == context_ex->Legacy.Length,
+ "Got unexpected p %p, length %#x, flags %#x.\n", p, length2, flags);
+ length2 = expected_length;
for (j = 0; j < context_arch[test].flags_offset; ++j)
{
@@ -6732,6 +6745,7 @@ START_TEST(exception)
X(RtlInitializeExtendedContext);
X(RtlInitializeExtendedContext2);
X(RtlLocateExtendedFeature);
+ X(RtlLocateLegacyContext);
#undef X
#define X(f) p##f = (void*)GetProcAddress(hkernel32, #f)
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
index 6666031cc6d..a900796359c 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
@@ -1176,6 +1176,7 @@
@ stdcall RtlLocalTimeToSystemTime(ptr ptr)
@ stdcall RtlLocateExtendedFeature(ptr long ptr)
@ stdcall RtlLocateExtendedFeature2(ptr long ptr ptr)
+@ stdcall RtlLocateLegacyContext(ptr ptr)
@ stub RtlLockBootStatusData
@ stdcall RtlLookupAtomInAtomTable(ptr wstr ptr)
@ stub RtlLookupElementGenericTable
diff --git a/include/ddk/wdm.h b/include/ddk/wdm.h
index d95a5acadaf..d6ced7044d8 100644
--- a/include/ddk/wdm.h
+++ b/include/ddk/wdm.h
@@ -1842,6 +1842,7 @@ NTSTATUS WINAPI RtlInitializeExtendedContext2(void*,ULONG,CONTEXT_EX**,ULONG64)
ULONG64 WINAPI RtlGetEnabledExtendedFeatures(ULONG64);
ULONG64 WINAPI RtlGetExtendedContextLength(ULONG,ULONG*);
ULONG64 WINAPI RtlGetExtendedContextLength2(ULONG,ULONG*,ULONG64);
+void * WINAPI RtlLocateLegacyContext(CONTEXT_EX*,ULONG*);
void * WINAPI RtlLocateExtendedFeature(CONTEXT_EX*,ULONG,ULONG*);
void * WINAPI RtlLocateExtendedFeature2(CONTEXT_EX*,ULONG,XSTATE_CONFIGURATION*,ULONG*);
#endif
--
2.26.2
More information about the wine-devel
mailing list