--- /dev/null
+/*
+ * Copyright (c) 2007 The Hewlett-Packard Development Company
+ * All rights reserved.
+ *
+ * Redistribution and use of this software in source and binary forms,
+ * with or without modification, are permitted provided that the
+ * following conditions are met:
+ *
+ * The software must be used only for Non-Commercial Use which means any
+ * use which is NOT directed to receiving any direct monetary
+ * compensation for, or commercial advantage from such use. Illustrative
+ * examples of non-commercial use are academic research, personal study,
+ * teaching, education and corporate research & development.
+ * Illustrative examples of commercial use are distributing products for
+ * commercial advantage and providing services using the software for
+ * commercial advantage.
+ *
+ * If you wish to use this software or functionality therein that may be
+ * covered by patents for commercial use, please contact:
+ * Director of Intellectual Property Licensing
+ * Office of Strategy and Technology
+ * Hewlett-Packard Company
+ * 1501 Page Mill Road
+ * Palo Alto, California 94304
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. Redistributions
+ * in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or
+ * other materials provided with the distribution. Neither the name of
+ * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission. No right of
+ * sublicense is granted herewith. Derivatives of the software and
+ * output created using the software may be prepared, but only for
+ * Non-Commercial Uses. Derivatives of the software may be shared with
+ * others provided: (i) the others agree to abide by the list of
+ * conditions herein which includes the Non-Commercial Use restrictions;
+ * and (ii) such Derivatives of the software include the above copyright
+ * notice to acknowledge the contribution from this software where
+ * applicable, this list of conditions and the disclaimer below.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#include "arch/x86/emulenv.hh"
+#include "base/misc.hh"
+
+using namespace X86ISA;
+
+void EmulEnv::doModRM(const ExtMachInst & machInst)
+{
+ assert(machInst.modRM.mod != 3);
+ //Use the SIB byte for addressing if the modrm byte calls for it.
+ if (machInst.modRM.rm == 4 && machInst.addrSize != 2) {
+ scale = 1 << machInst.sib.scale;
+ index = machInst.sib.index;
+ base = machInst.sib.base;
+ //In this special case, we don't use a base. The displacement also
+ //changes, but that's managed by the predecoder.
+ if (machInst.sib.base == INTREG_RBP && machInst.modRM.mod == 0)
+ base = NUM_INTREGS;
+ //In -this- special case, we don't use an index.
+ if (machInst.sib.index == INTREG_RSP)
+ index = NUM_INTREGS;
+ } else {
+ if (machInst.addrSize == 2) {
+ warn("I'm not really using 16 bit MODRM like I'm supposed to!\n");
+ } else {
+ scale = 0;
+ base = machInst.modRM.rm;
+ if (machInst.modRM.mod == 0 && machInst.modRM.rm == 5) {
+ base = NUM_INTREGS;
+ if (machInst.mode.submode == SixtyFourBitMode)
+ base = NUM_INTREGS+7;
+ }
+ }
+ }
+}
+
--- /dev/null
+/*
+ * Copyright (c) 2007 The Hewlett-Packard Development Company
+ * All rights reserved.
+ *
+ * Redistribution and use of this software in source and binary forms,
+ * with or without modification, are permitted provided that the
+ * following conditions are met:
+ *
+ * The software must be used only for Non-Commercial Use which means any
+ * use which is NOT directed to receiving any direct monetary
+ * compensation for, or commercial advantage from such use. Illustrative
+ * examples of non-commercial use are academic research, personal study,
+ * teaching, education and corporate research & development.
+ * Illustrative examples of commercial use are distributing products for
+ * commercial advantage and providing services using the software for
+ * commercial advantage.
+ *
+ * If you wish to use this software or functionality therein that may be
+ * covered by patents for commercial use, please contact:
+ * Director of Intellectual Property Licensing
+ * Office of Strategy and Technology
+ * Hewlett-Packard Company
+ * 1501 Page Mill Road
+ * Palo Alto, California 94304
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. Redistributions
+ * in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or
+ * other materials provided with the distribution. Neither the name of
+ * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission. No right of
+ * sublicense is granted herewith. Derivatives of the software and
+ * output created using the software may be prepared, but only for
+ * Non-Commercial Uses. Derivatives of the software may be shared with
+ * others provided: (i) the others agree to abide by the list of
+ * conditions herein which includes the Non-Commercial Use restrictions;
+ * and (ii) such Derivatives of the software include the above copyright
+ * notice to acknowledge the contribution from this software where
+ * applicable, this list of conditions and the disclaimer below.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#ifndef __ARCH_X86_EMULENV_HH__
+#define __ARCH_X86_EMULENV_HH__
+
+#include "arch/x86/types.hh"
+#include "arch/x86/intregs.hh"
+
+namespace X86ISA
+{
+ struct EmulEnv
+ {
+ RegIndex reg;
+ RegIndex regm;
+ uint8_t scale;
+ RegIndex index;
+ RegIndex base;
+ int dataSize;
+ int addressSize;
+ int stackSize;
+
+ EmulEnv(RegIndex _reg, RegIndex _regm,
+ int _dataSize, int _addressSize, int _stackSize) :
+ reg(_reg), regm(_regm),
+ scale(0), index(NUM_INTREGS),
+ base(NUM_INTREGS),
+ dataSize(_dataSize), addressSize(_addressSize),
+ stackSize(_stackSize)
+ {;}
+
+ void doModRM(const ExtMachInst & machInst);
+ };
+};
+
+#endif // __ARCH_X86_TYPES_HH__
projects / gem5.git / commitdiff