Changeset 50424 in vbox

Timestamp:

Feb 12, 2014 12:26:55 PM (11 years ago)

Author:

vboxsync

Message:

ASMSetIDTR and ASMSetGDTR.

Location:

trunk

Files:

• include/iprt/asm-amd64-x86.h (modified) (1 diff)
• src/VBox/Runtime/Makefile.kmk (modified) (1 diff)
• src/VBox/Runtime/common/asm/ASMSetGDTR.asm (copied) (copied from trunk/src/VBox/Runtime/common/asm/ASMGetGDTR.asm ) (3 diffs)
• src/VBox/Runtime/common/asm/ASMSetIDTR.asm (copied) (copied from trunk/src/VBox/Runtime/common/asm/ASMGetGDTR.asm ) (3 diffs)

trunk/include/iprt/asm-amd64-x86.h

@@ -186 +186 @@
 #endif
 
+
+/**
+ * Sets the content of the GDTR CPU register.
+ * @param   pIdtr   Where to load the GDTR contents from
+ */
+#if RT_INLINE_ASM_EXTERNAL
+DECLASM(void) ASMSetGDTR(const RTGDTR *pGdtr);
+#else
+DECLINLINE(void) ASMSetGDTR(const RTGDTR *pGdtr)
+{
+# if RT_INLINE_ASM_GNU_STYLE
+    __asm__ __volatile__("lgdt %0" : : "m" (*pGdtr));
+# else
+    __asm
+    {
+#  ifdef RT_ARCH_AMD64
+        mov     rax, [pGdtr]
+        lgdt    [rax]
+#  else
+        mov     eax, [pGdtr]
+        lgdt    [eax]
+#  endif
+    }
+# endif
+}
+#endif
+
+
+
 /**
  * Get the cs register.

trunk/src/VBox/Runtime/Makefile.kmk

@@ -184 +184 @@
         common/asm/ASMNopPause.asm \
         common/asm/ASMGetIDTR.asm \
+        common/asm/ASMSetIDTR.asm \
         common/asm/ASMGetGDTR.asm \
+        common/asm/ASMSetGDTR.asm \
         common/asm/ASMGetLDTR.asm \
         common/asm/ASMGetSegAttr.asm \

trunk/src/VBox/Runtime/common/asm/ASMSetGDTR.asm

@@ -1 +1 @@
 ; $Id$
 ;; @file
-; IPRT - ASMGetGDTR().
+; IPRT - ASMSetGDTR().
 ;
 
 ;
-; Copyright (C) 2006-2013 Oracle Corporation
+; Copyright (C) 2006-2014 Oracle Corporation
 ;
 ; This file is part of VirtualBox Open Source Edition (OSE), as
@@ -33 +33 @@
 
 ;;
-; Gets the content of the GDTR CPU register.
-; @param   pGdtr    Where to store the GDTR contents.
+; Sets the content of the GDTR CPU register.
+; @param   pGdtr    Where to load the GDTR contents from.
 ;                   msc=rcx, gcc=rdi, x86=[esp+4]
 ;
-BEGINPROC_EXPORTED ASMGetGDTR
+BEGINPROC_EXPORTED ASMSetGDTR
 %ifdef ASM_CALL64_MSC
         mov     rax, rcx
@@ -47 +47 @@
  %error "Undefined arch?"
 %endif
-        sgdt    [xAX]
+        lgdt    [xAX]
         ret
-ENDPROC ASMGetGDTR
+ENDPROC ASMSetGDTR
 

trunk/src/VBox/Runtime/common/asm/ASMSetIDTR.asm

@@ -1 +1 @@
 ; $Id$
 ;; @file
-; IPRT - ASMGetGDTR().
+; IPRT - ASMSetIDTR().
 ;
 
 ;
-; Copyright (C) 2006-2013 Oracle Corporation
+; Copyright (C) 2006-2014 Oracle Corporation
 ;
 ; This file is part of VirtualBox Open Source Edition (OSE), as
@@ -33 +33 @@
 
 ;;
-; Gets the content of the GDTR CPU register.
-; @param   pGdtr    Where to store the GDTR contents.
+; Sets the content of the IDTR CPU register.
+; @param   pIdtr    Where to load the IDTR contents from.
 ;                   msc=rcx, gcc=rdi, x86=[esp+4]
 ;
-BEGINPROC_EXPORTED ASMGetGDTR
+BEGINPROC_EXPORTED ASMSetIDTR
 %ifdef ASM_CALL64_MSC
         mov     rax, rcx
@@ -47 +47 @@
  %error "Undefined arch?"
 %endif
-        sgdt    [xAX]
+        lidt    [xAX]
         ret
-ENDPROC ASMGetGDTR
+ENDPROC ASMSetIDTR