1 files changed, 179 insertions, 0 deletions

diff --git a/private/ntos/nthals/x86new/miscops.c b/private/ntos/nthals/x86new/miscops.c
new file mode 100644
index 000000000..5cfd3cf2c
--- /dev/null
+++ b/private/ntos/nthals/x86new/miscops.c
@@ -0,0 +1,179 @@
+/*++
+
+Copyright (c) 1994  Microsoft Corporation
+
+Module Name:
+
+    miscops.c
+
+Abstract:
+
+    This module implements the code to emulate miscellaneous opcodes.
+
+Author:
+
+    David N. Cutler (davec) 22-Sep-1994
+
+Environment:
+
+    Kernel mode only.
+
+Revision History:
+
+--*/
+
+#include "nthal.h"
+#include "emulate.h"
+
+VOID
+XmBoundOp (
+    PRXM_CONTEXT P
+    )
+
+/*++
+
+Routine Description:
+
+    This function emulates a bound opcode.
+
+Arguments:
+
+    P - Supplies a pointer to an emulator context structure.
+
+Return Value:
+
+    None.
+
+--*/
+
+{
+
+    union {
+        LONG Long;
+        SHORT Word;
+    } LowerBound;
+
+    union {
+        LONG Long;
+        SHORT Word;
+    } UpperBound;
+
+    ULONG Offset;
+
+    //
+    // Get lower and upper bounds and check index against index value.
+    //
+
+    Offset = P->SrcValue.Long;
+    XmSetSourceValue(P, XmGetOffsetAddress(P, Offset));
+    LowerBound.Long = P->SrcValue.Long;
+    XmSetSourceValue(P, XmGetOffsetAddress(P, Offset + P->DataType + 1));
+    UpperBound.Long = P->SrcValue.Long;
+    if (P->DataType == LONG_DATA) {
+        if (((LONG)(*P->DstLong) < LowerBound.Long) ||
+            ((LONG)(*P->DstLong) > (UpperBound.Long + (LONG)(P->DataType + 1)))) {
+            longjmp(&P->JumpBuffer[0], XM_INDEX_OUT_OF_BOUNDS);
+        }
+
+    } else {
+        if (((SHORT)(*P->DstWord) < LowerBound.Word) ||
+            ((SHORT)(*P->DstWord) > (UpperBound.Word + (SHORT)(P->DataType + 1)))) {
+            longjmp(&P->JumpBuffer[0], XM_INDEX_OUT_OF_BOUNDS);
+        }
+    }
+
+    return;
+}
+
+VOID
+XmBswapOp (
+    PRXM_CONTEXT P
+    )
+
+/*++
+
+Routine Description:
+
+    This function emulates a bswap opcode.
+
+Arguments:
+
+    P - Supplies a pointer to an emulator context structure.
+
+Return Value:
+
+    None.
+
+--*/
+
+{
+
+    ULONG Result;
+
+    //
+    // Swap bytes and set result value.
+    //
+
+    Result = (P->SrcValue.Long << 24) | ((P->SrcValue.Long & 0xff00) << 8) |
+             (P->SrcValue.Long >> 24) | ((P->SrcValue.Long >> 8) & 0xff00);
+
+    XmStoreResult(P, Result);
+    return;
+}
+
+VOID
+XmIllOp (
+    PRXM_CONTEXT P
+    )
+
+/*++
+
+Routine Description:
+
+    This function emulates an illegal opcode.
+
+Arguments:
+
+    P - Supplies a pointer to an emulator context structure.
+
+Return Value:
+
+    None.
+
+--*/
+
+{
+
+    //
+    // Raise an illegal opcode exception.
+    //
+
+    longjmp(&P->JumpBuffer[0], XM_ILLEGAL_INSTRUCTION_OPCODE);
+    return;
+}
+
+VOID
+XmNopOp (
+    PRXM_CONTEXT P
+    )
+
+/*++
+
+Routine Description:
+
+    This function emulates a nop opcode.
+
+Arguments:
+
+    P - Supplies a pointer to an emulator context structure.
+
+Return Value:
+
+    None.
+
+--*/
+
+{
+
+    return;
+}