Changeset 106401 in vbox for trunk/src/VBox/VMM/include/IEMInternal.h

Timestamp:

Oct 16, 2024 8:56:01 PM (3 months ago)

Author:

vboxsync

Message:

VMM/IEM: Disable control flow guard for the core IEM jump table call loops. bugref:10720

File:

• trunk/src/VBox/VMM/include/IEMInternal.h (modified) (6 diffs)

trunk/src/VBox/VMM/include/IEMInternal.h

@@ -2977 +2977 @@
 
 
+/** @def IEM_DECL_MSC_GUARD_IGNORE
+ * Disables control flow guards checks inside a method and any function pointers
+ * referenced by it. */
+#if defined(_MSC_VER) && !defined(IN_RING0)
+# define IEM_DECL_MSC_GUARD_IGNORE  __declspec(guard(ignore))
+#else
+# define IEM_DECL_MSC_GUARD_IGNORE
+#endif
+
+/** @def IEM_DECL_MSC_GUARD_NONE
+ * Disables control flow guards checks inside a method and but continue track
+ * function pointers references by it. */
+#if defined(_MSC_VER) && !defined(IN_RING0)
+# define IEM_DECL_MSC_GUARD_NONE    __declspec(guard(nocf))
+#else
+# define IEM_DECL_MSC_GUARD_NONE
+#endif
+
+
 /** @def IEM_DECL_IMPL_TYPE
  * For typedef'ing an instruction implementation function.
@@ -3005 +3024 @@
     a_RetType (__fastcall a_Name) a_ArgList
 # define IEM_DECL_IMPL_DEF(a_RetType, a_Name, a_ArgList) \
-    a_RetType __fastcall a_Name a_ArgList RT_NOEXCEPT
+    IEM_DECL_MSC_GUARD_IGNORE a_RetType __fastcall a_Name a_ArgList RT_NOEXCEPT
 # define IEM_DECL_IMPL_PROTO(a_RetType, a_Name, a_ArgList) \
-    a_RetType __fastcall a_Name a_ArgList RT_NOEXCEPT
+    IEM_DECL_MSC_GUARD_IGNORE a_RetType __fastcall a_Name a_ArgList RT_NOEXCEPT
 
 #elif __cplusplus >= 201700 /* P0012R1 support */
@@ -3013 +3032 @@
     a_RetType (VBOXCALL a_Name) a_ArgList RT_NOEXCEPT
 # define IEM_DECL_IMPL_DEF(a_RetType, a_Name, a_ArgList) \
-    DECL_HIDDEN_ONLY(a_RetType) VBOXCALL a_Name a_ArgList RT_NOEXCEPT
+    IEM_DECL_MSC_GUARD_IGNORE DECL_HIDDEN_ONLY(a_RetType) VBOXCALL a_Name a_ArgList RT_NOEXCEPT
 # define IEM_DECL_IMPL_PROTO(a_RetType, a_Name, a_ArgList) \
-    DECL_HIDDEN_ONLY(a_RetType) VBOXCALL a_Name a_ArgList RT_NOEXCEPT
+    IEM_DECL_MSC_GUARD_IGNORE DECL_HIDDEN_ONLY(a_RetType) VBOXCALL a_Name a_ArgList RT_NOEXCEPT
 
 #else
@@ -3021 +3040 @@
     a_RetType (VBOXCALL a_Name) a_ArgList
 # define IEM_DECL_IMPL_DEF(a_RetType, a_Name, a_ArgList) \
-    DECL_HIDDEN_ONLY(a_RetType) VBOXCALL a_Name a_ArgList
+    IEM_DECL_MSC_GUARD_IGNORE DECL_HIDDEN_ONLY(a_RetType) VBOXCALL a_Name a_ArgList
 # define IEM_DECL_IMPL_PROTO(a_RetType, a_Name, a_ArgList) \
-    DECL_HIDDEN_ONLY(a_RetType) VBOXCALL a_Name a_ArgList
+    IEM_DECL_MSC_GUARD_IGNORE DECL_HIDDEN_ONLY(a_RetType) VBOXCALL a_Name a_ArgList
 
 #endif
@@ -5394 +5413 @@
 typedef VBOXSTRICTRC (* PFNIEMOPRM)(PVMCPUCC pVCpu, uint8_t bRm);
 # define FNIEMOP_DEF(a_Name) \
-    IEM_STATIC VBOXSTRICTRC a_Name(PVMCPUCC pVCpu) IEM_NOEXCEPT_MAY_LONGJMP
+    IEM_STATIC IEM_DECL_MSC_GUARD_IGNORE VBOXSTRICTRC a_Name(PVMCPUCC pVCpu) IEM_NOEXCEPT_MAY_LONGJMP
 # define FNIEMOP_DEF_1(a_Name, a_Type0, a_Name0) \
-    IEM_STATIC VBOXSTRICTRC a_Name(PVMCPUCC pVCpu, a_Type0 a_Name0) IEM_NOEXCEPT_MAY_LONGJMP
+    IEM_STATIC IEM_DECL_MSC_GUARD_IGNORE VBOXSTRICTRC a_Name(PVMCPUCC pVCpu, a_Type0 a_Name0) IEM_NOEXCEPT_MAY_LONGJMP
 # define FNIEMOP_DEF_2(a_Name, a_Type0, a_Name0, a_Type1, a_Name1) \
-    IEM_STATIC VBOXSTRICTRC a_Name(PVMCPUCC pVCpu, a_Type0 a_Name0, a_Type1 a_Name1) IEM_NOEXCEPT_MAY_LONGJMP
+    IEM_STATIC IEM_DECL_MSC_GUARD_IGNORE VBOXSTRICTRC a_Name(PVMCPUCC pVCpu, a_Type0 a_Name0, a_Type1 a_Name1) IEM_NOEXCEPT_MAY_LONGJMP
 
 #endif
@@ -6726 +6745 @@
 typedef FNIEMTHREADEDFUNC *PFNIEMTHREADEDFUNC;
 # define IEM_DECL_IEMTHREADEDFUNC_DEF(a_Name) \
-    VBOXSTRICTRC a_Name(PVMCPU pVCpu, uint64_t uParam0, uint64_t uParam1, uint64_t uParam2) IEM_NOEXCEPT_MAY_LONGJMP
+    IEM_DECL_MSC_GUARD_IGNORE VBOXSTRICTRC a_Name(PVMCPU pVCpu, uint64_t uParam0, uint64_t uParam1, uint64_t uParam2) IEM_NOEXCEPT_MAY_LONGJMP
 # define IEM_DECL_IEMTHREADEDFUNC_PROTO(a_Name) \
-    VBOXSTRICTRC a_Name(PVMCPU pVCpu, uint64_t uParam0, uint64_t uParam1, uint64_t uParam2) IEM_NOEXCEPT_MAY_LONGJMP
+    IEM_DECL_MSC_GUARD_IGNORE VBOXSTRICTRC a_Name(PVMCPU pVCpu, uint64_t uParam0, uint64_t uParam1, uint64_t uParam2) IEM_NOEXCEPT_MAY_LONGJMP
 #endif