Changeset 36639 in vbox for trunk/include/VBox/vmm

Timestamp:

Apr 11, 2011 10:10:38 AM (14 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

71105

Message:

CPUMIsGuestInRealOrV86Mode and CPUMIsGuestInRealOrV86ModeEx.

File:

• trunk/include/VBox/vmm/cpum.h (modified) (2 diffs)

trunk/include/VBox/vmm/cpum.h

@@ -181 +181 @@
 VMMDECL(bool)       CPUMIsGuestR0WriteProtEnabled(PVMCPU pVCpu);
 VMMDECL(bool)       CPUMIsGuestInRealMode(PVMCPU pVCpu);
+VMMDECL(bool)       CPUMIsGuestInRealOrV86Mode(PVMCPU pVCpu);
 VMMDECL(bool)       CPUMIsGuestInProtectedMode(PVMCPU pVCpu);
 VMMDECL(bool)       CPUMIsGuestInPagedProtectedMode(PVMCPU pVCpu);
@@ -197 +198 @@
 {
     return !(pCtx->cr0 & X86_CR0_PE);
+}
+
+/**
+ * Tests if the guest is running in real or virtual 8086 mode.
+ *
+ * @returns @c true if it is, @c false if not.
+ * @param   pCtx    Current CPU context
+ */
+VMMDECL(bool) CPUMIsGuestInRealOrV86ModeEx(PCPUMCTX pCtx)
+{
+    return !(pCtx->cr0 & X86_CR0_PE)
+        || pCtx->eflags.Bits.u1VM; /** @todo verify that this cannot be set in long mode. */
 }