[reactos] 03/07: [RTL] Move exception handling code to except.c

[Timo Kreuzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=5075f7d7462c30739f139…

commit 5075f7d7462c30739f1391e0e1cc44415be6ee47
Author:     Timo Kreuzer <timo.kreuzer(a)reactos.org>
AuthorDate: Thu Mar 1 14:13:01 2018 +0100
Commit:     Timo Kreuzer <timo.kreuzer(a)reactos.org>
CommitDate: Sat Jun 5 13:52:42 2021 +0200

    [RTL] Move exception handling code to except.c
---
 sdk/lib/rtl/CMakeLists.txt |   1 +
 sdk/lib/rtl/amd64/except.c | 102 +++++++++++++++++++++++++++++++++++++++++++++
 sdk/lib/rtl/amd64/stubs.c  |  23 ----------
 sdk/lib/rtl/amd64/unwind.c |  65 -----------------------------
 4 files changed, 103 insertions(+), 88 deletions(-)

diff --git a/sdk/lib/rtl/CMakeLists.txt b/sdk/lib/rtl/CMakeLists.txt
index c2b2e5d1025..f250931846a 100644
--- a/sdk/lib/rtl/CMakeLists.txt
+++ b/sdk/lib/rtl/CMakeLists.txt
@@ -89,6 +89,7 @@ elseif(ARCH STREQUAL "amd64")
     list(APPEND SOURCE
         bitmap64.c
         byteswap.c
+        amd64/except.c
         amd64/unwind.c
         amd64/stubs.c
         mem.c)
diff --git a/sdk/lib/rtl/amd64/except.c b/sdk/lib/rtl/amd64/except.c
new file mode 100644
index 00000000000..9e7dcf87c0e
--- /dev/null
+++ b/sdk/lib/rtl/amd64/except.c
@@ -0,0 +1,102 @@
+/*
+ * PROJECT:     ReactOS Run-Time Library
+ * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
+ * PURPOSE:     User-mode exception support for AMD64
+ * COPYRIGHT:   Copyright 2018-2021 Timo Kreuzer <timo.kreuzer(a)reactos.org>
+ */
+
+/* INCLUDES *****************************************************************/
+
+#include <rtl.h>
+#define NDEBUG
+#include <debug.h>
+
+/* PUBLIC FUNCTIONS **********************************************************/
+
+VOID
+NTAPI
+RtlRaiseException(IN PEXCEPTION_RECORD ExceptionRecord)
+{
+    CONTEXT Context;
+    NTSTATUS Status = STATUS_INVALID_DISPOSITION;
+    ULONG64 ImageBase;
+    PRUNTIME_FUNCTION FunctionEntry;
+    PVOID HandlerData;
+    ULONG64 EstablisherFrame;
+
+    /* Capture the context */
+    RtlCaptureContext(&Context);
+
+    /* Get the function entry for this function */
+    FunctionEntry = RtlLookupFunctionEntry(Context.Rip,
+                                           &ImageBase,
+                                           NULL);
+
+    /* Check if we found it */
+    if (FunctionEntry)
+    {
+        /* Unwind to the caller of this function */
+        RtlVirtualUnwind(UNW_FLAG_NHANDLER,
+                         ImageBase,
+                         Context.Rip,
+                         FunctionEntry,
+                         &Context,
+                         &HandlerData,
+                         &EstablisherFrame,
+                         NULL);
+
+        /* Save the exception address */
+        ExceptionRecord->ExceptionAddress = (PVOID)Context.Rip;
+
+        /* Write the context flag */
+        Context.ContextFlags = CONTEXT_FULL;
+
+        /* Check if user mode debugger is active */
+        if (RtlpCheckForActiveDebugger())
+        {
+            /* Raise an exception immediately */
+            Status = ZwRaiseException(ExceptionRecord, &Context, TRUE);
+        }
+        else
+        {
+            /* Dispatch the exception and check if we should continue */
+            if (!RtlDispatchException(ExceptionRecord, &Context))
+            {
+                /* Raise the exception */
+                Status = ZwRaiseException(ExceptionRecord, &Context, FALSE);
+            }
+            else
+            {
+                /* Continue, go back to previous context */
+                Status = ZwContinue(&Context, FALSE);
+            }
+        }
+    }
+
+    /* If we returned, raise a status */
+    RtlRaiseStatus(Status);
+}
+
+/*
+* @unimplemented
+*/
+PVOID
+NTAPI
+RtlpGetExceptionAddress(VOID)
+{
+    UNIMPLEMENTED;
+    return NULL;
+}
+
+/*
+ * @unimplemented
+ */
+BOOLEAN
+NTAPI
+RtlDispatchException(IN PEXCEPTION_RECORD ExceptionRecord,
+                     IN PCONTEXT Context)
+{
+    __debugbreak();
+    UNIMPLEMENTED;
+    return FALSE;
+}
diff --git a/sdk/lib/rtl/amd64/stubs.c b/sdk/lib/rtl/amd64/stubs.c
index 7eb61416c36..7ffc4fb9658 100644
--- a/sdk/lib/rtl/amd64/stubs.c
+++ b/sdk/lib/rtl/amd64/stubs.c
@@ -74,29 +74,6 @@ RtlInitializeContext(
     return;
 }
 
-/*
- * @unimplemented
- */
-PVOID
-NTAPI
-RtlpGetExceptionAddress(VOID)
-{
-    UNIMPLEMENTED;
-    return NULL;
-}
-
-/*
- * @unimplemented
- */
-BOOLEAN
-NTAPI
-RtlDispatchException(IN PEXCEPTION_RECORD ExceptionRecord,
-                     IN PCONTEXT Context)
-{
-    UNIMPLEMENTED;
-    return FALSE;
-}
-
 NTSTATUS
 NTAPI
 RtlQueueApcWow64Thread(
diff --git a/sdk/lib/rtl/amd64/unwind.c b/sdk/lib/rtl/amd64/unwind.c
index 26a7610d250..6f3ce6efd51 100644
--- a/sdk/lib/rtl/amd64/unwind.c
+++ b/sdk/lib/rtl/amd64/unwind.c
@@ -622,71 +622,6 @@ RtlGetCallersAddress(
     return;
 }
 
-// FIXME: move to different file
-VOID
-NTAPI
-RtlRaiseException(IN PEXCEPTION_RECORD ExceptionRecord)
-{
-    CONTEXT Context;
-    NTSTATUS Status = STATUS_INVALID_DISPOSITION;
-    ULONG64 ImageBase;
-    PRUNTIME_FUNCTION FunctionEntry;
-    PVOID HandlerData;
-    ULONG64 EstablisherFrame;
-
-    /* Capture the context */
-    RtlCaptureContext(&Context);
-
-    /* Get the function entry for this function */
-    FunctionEntry = RtlLookupFunctionEntry(Context.Rip,
-                                           &ImageBase,
-                                           NULL);
-
-    /* Check if we found it */
-    if (FunctionEntry)
-    {
-        /* Unwind to the caller of this function */
-        RtlVirtualUnwind(UNW_FLAG_NHANDLER,
-                         ImageBase,
-                         Context.Rip,
-                         FunctionEntry,
-                         &Context,
-                         &HandlerData,
-                         &EstablisherFrame,
-                         NULL);
-
-        /* Save the exception address */
-        ExceptionRecord->ExceptionAddress = (PVOID)Context.Rip;
-
-        /* Write the context flag */
-        Context.ContextFlags = CONTEXT_FULL;
-
-        /* Check if user mode debugger is active */
-        if (RtlpCheckForActiveDebugger())
-        {
-            /* Raise an exception immediately */
-            Status = ZwRaiseException(ExceptionRecord, &Context, TRUE);
-        }
-        else
-        {
-            /* Dispatch the exception and check if we should continue */
-            if (!RtlDispatchException(ExceptionRecord, &Context))
-            {
-                /* Raise the exception */
-                Status = ZwRaiseException(ExceptionRecord, &Context, FALSE);
-            }
-            else
-            {
-                /* Continue, go back to previous context */
-                Status = ZwContinue(&Context, FALSE);
-            }
-        }
-    }
-
-    /* If we returned, raise a status */
-    RtlRaiseStatus(Status);
-}
-
 static
 VOID
 RtlpCaptureNonVolatileContextPointers(