Changeset 72555 in vbox for trunk/src/VBox/VMM/include

Timestamp:

Jun 14, 2018 9:28:31 PM (7 years ago)

Author:

vboxsync

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

123048

Message:

EM,NEM,HM: Started on generic exit history, only hooked up to NEM/win. bugref:9044

Location:

trunk/src/VBox/VMM/include

Files:

• EMInternal.h (modified) (2 diffs)
• NEMInternal.h (modified) (1 diff)

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

@@ -292 +292 @@
 
 /**
+ * Exit history entry.
+ *
+ * @remarks We could perhaps trim this down a little bit by assuming uFlatPC
+ *          only needs 48 bits (currently true but will change) and stuffing
+ *          the flags+type in the available 16 bits made available.  The
+ *          timestamp could likewise be shortened to accomodate the index, or
+ *          we might skip the index entirely.  However, since we will have to
+ *          deal with 56-bit wide PC address before long, there's not point.
+ *
+ *          On the upside, there are unused bits in both uFlagsAndType and the
+ *          idxSlot fields if needed for anything.
+ */
+typedef struct EMEXITENTRY
+{
+    /** The flat PC (CS:EIP/RIP) address of the exit. */
+    uint64_t        uFlatPC;
+    /** The EMEXIT_MAKE_FLAGS_AND_TYPE */
+    uint32_t        uFlagsAndType;
+    /** The index into the exit slot hash table.
+     * UINT32_MAX if too many collisions and not entered into it. */
+    uint32_t        idxSlot;
+    /** The TSC timestamp of the exit.
+     * This is 0 if not timestamped. */
+    uint64_t        uTimestamp;
+} EMEXITENTRY;
+/** Pointer to an exit history entry. */
+typedef EMEXITENTRY *PEMEXITENTRY;
+/** Pointer to a const exit history entry. */
+typedef EMEXITENTRY const *PCEMEXITENTRY;
+
+
+/**
  * Converts a EM pointer into a VM pointer.
  * @returns Pointer to the VM structure the EM is part of.
@@ -464 +496 @@
     uint64_t                padding1;
 #endif
+
+    /** Where to store the next exit history entry.
+     * Since aExitHistory is 256 items longs, we'll just increment this and
+     * mask it when using it.  That help the readers detect whether we've
+     * wrapped around or not.  */
+    uint64_t                iNextExit;
+    /** Exit history table (6KB). */
+    EMEXITENTRY             aExitHistory[256];
 } EMCPU;
 /** Pointer to EM VM instance data. */

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

@@ -102 +102 @@
 # define NEM_TMPL_STATIC
 #endif
+
+
+/**
+ * Generic NEM exit type enumeration for use with EMHistoryAddExit.
+ *
+ * On windows we've got two different set of exit types and they are both jumping
+ * around the place value wise, so EM can use their values.
+ *
+ * @note We only have exit types for exits not covered by EM here.
+ */
+typedef enum NEMEXITTYPE
+{
+    /* windows: */
+    NEMEXITTYPE_UNRECOVERABLE_EXCEPTION = 1,
+    NEMEXITTYPE_INVALID_VP_REGISTER_VALUE,
+    NEMEXITTYPE_INTTERRUPT_WINDOW,
+    NEMEXITTYPE_HALT,
+    NEMEXITTYPE_XCPT_UD,
+    NEMEXITTYPE_XCPT_DB,
+    NEMEXITTYPE_XCPT_BP,
+    NEMEXITTYPE_CANCELED
+} NEMEXITTYPE;