[PATCH 0/1] MR2929: ntdll: Get rid of hacks for direct unix calls.

[PATCH 1/1] ntdll: Get rid of hacks for direct unix calls.

[Jacek Caban]

From: Jacek Caban

---
 dlls/ntdll/unix/signal_arm.c    | 10 +---------
 dlls/ntdll/unix/signal_arm64.c  | 10 +---------
 dlls/ntdll/unix/signal_i386.c   | 10 +---------
 dlls/ntdll/unix/signal_x86_64.c | 10 +---------
 4 files changed, 4 insertions(+), 36 deletions(-)

diff --git a/dlls/ntdll/unix/signal_arm.c b/dlls/ntdll/unix/signal_arm.c
index 640ea39f5d9..f862610497f 100644
--- a/dlls/ntdll/unix/signal_arm.c
+++ b/dlls/ntdll/unix/signal_arm.c
@@ -1213,14 +1213,6 @@ NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void
     void *args_data = (void *)((frame->sp - len) & ~15);
     ULONG_PTR *stack = args_data;

-    /* if we have no syscall frame, call the callback directly */
-    if ((char *)&frame < (char *)ntdll_get_thread_data()->kernel_stack ||
-        (char *)&frame > (char *)arm_thread_data()->syscall_frame)
-    {
-        NTSTATUS (WINAPI *func)(const void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
-        return func( args, len );
-    }
-
     if ((char *)ntdll_get_thread_data()->kernel_stack + min_kernel_stack > (char *)&frame)
         return STATUS_STACK_OVERFLOW;

@@ -1254,7 +1246,7 @@ static BOOL handle_syscall_fault( ucontext_t *context, EXCEPTION_RECORD *rec )
     struct syscall_frame *frame = arm_thread_data()->syscall_frame;
     UINT i;

-    if (!is_inside_syscall( context ) && !ntdll_get_thread_data()->jmp_buf) return FALSE;
+    if (!is_inside_syscall( context )) return FALSE;

TRACE( "code=%lx flags=%lx addr=%p pc=%08lx\n",
            rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress, (DWORD)PC_sig(context) );
diff --git a/dlls/ntdll/unix/signal_arm64.c b/dlls/ntdll/unix/signal_arm64.c
index f232ecf92a9..6d67420ed2a 100644
--- a/dlls/ntdll/unix/signal_arm64.c
+++ b/dlls/ntdll/unix/signal_arm64.c
@@ -1169,14 +1169,6 @@ NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void
     void *args_data = (void *)((frame->sp - len) & ~15);
     ULONG_PTR *stack = args_data;

-    /* if we have no syscall frame, call the callback directly */
-    if ((char *)&frame < (char *)ntdll_get_thread_data()->kernel_stack ||
-        (char *)&frame > (char *)arm64_thread_data()->syscall_frame)
-    {
-        NTSTATUS (WINAPI *func)(const void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
-        return func( args, len );
-    }
-
     if ((char *)ntdll_get_thread_data()->kernel_stack + min_kernel_stack > (char *)&frame)
         return STATUS_STACK_OVERFLOW;

@@ -1210,7 +1202,7 @@ static BOOL handle_syscall_fault( ucontext_t *context, EXCEPTION_RECORD *rec )
     struct syscall_frame *frame = arm64_thread_data()->syscall_frame;
     DWORD i;

-    if (!is_inside_syscall( context ) && !ntdll_get_thread_data()->jmp_buf) return FALSE;
+    if (!is_inside_syscall( context )) return FALSE;

TRACE( "code=%x flags=%x addr=%p pc=%p tid=%04x\n",
            rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
diff --git a/dlls/ntdll/unix/signal_i386.c b/dlls/ntdll/unix/signal_i386.c
index 89af605443d..748828ad99e 100644
--- a/dlls/ntdll/unix/signal_i386.c
+++ b/dlls/ntdll/unix/signal_i386.c
@@ -1653,14 +1653,6 @@ NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void
     void *args_data = (void *)((frame->esp - len) & ~15);
     ULONG_PTR *stack = args_data;

-    /* if we have no syscall frame, call the callback directly */
-    if ((char *)&frame < (char *)ntdll_get_thread_data()->kernel_stack ||
-        (char *)&frame > (char *)x86_thread_data()->syscall_frame)
-    {
-        NTSTATUS (WINAPI *func)(const void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
-        return func( args, len );
-    }
-
     if ((char *)ntdll_get_thread_data()->kernel_stack + min_kernel_stack > (char *)&frame)
         return STATUS_STACK_OVERFLOW;

@@ -1771,7 +1763,7 @@ static BOOL handle_syscall_fault( ucontext_t *sigcontext, void *stack_ptr,
     struct syscall_frame *frame = x86_thread_data()->syscall_frame;
     UINT i, *stack;

-    if (!is_inside_syscall( sigcontext ) && !ntdll_get_thread_data()->jmp_buf) return FALSE;
+    if (!is_inside_syscall( sigcontext )) return FALSE;

TRACE( "code=%lx flags=%lx addr=%p ip=%08lx\n",
            rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress, context->Eip );
diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c
index 2875ead70d4..0a233384c5c 100644
--- a/dlls/ntdll/unix/signal_x86_64.c
+++ b/dlls/ntdll/unix/signal_x86_64.c
@@ -1708,14 +1708,6 @@ NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void
     void *args_data = (void *)((frame->rsp - len) & ~15);
     ULONG_PTR *stack = args_data;

-    /* if we have no syscall frame, call the callback directly */
-    if ((char *)&frame < (char *)ntdll_get_thread_data()->kernel_stack ||
-        (char *)&frame > (char *)amd64_thread_data()->syscall_frame)
-    {
-        NTSTATUS (WINAPI *func)(const void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
-        return func( args, len );
-    }
-
     if ((char *)ntdll_get_thread_data()->kernel_stack + min_kernel_stack > (char *)&frame)
         return STATUS_STACK_OVERFLOW;

@@ -1882,7 +1874,7 @@ static BOOL handle_syscall_fault( ucontext_t *sigcontext, EXCEPTION_RECORD *rec,
     struct syscall_frame *frame = amd64_thread_data()->syscall_frame;
     DWORD i;

-    if (!is_inside_syscall( sigcontext ) && !ntdll_get_thread_data()->jmp_buf) return FALSE;
+    if (!is_inside_syscall( sigcontext )) return FALSE;

TRACE_(seh)( "code=%x flags=%x addr=%p ip=%lx tid=%04x\n",
                  rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,