nop.isa revision 4806 
1// -*- mode:c++ -*-
2
3// Copyright (c) 2007 The Hewlett-Packard Development Company
4// All rights reserved.
5//
6// Redistribution and use of this software in source and binary forms,
7// with or without modification, are permitted provided that the
8// following conditions are met:
9//
10// The software must be used only for Non-Commercial Use which means any
11// use which is NOT directed to receiving any direct monetary
12// compensation for, or commercial advantage from such use.  Illustrative
13// examples of non-commercial use are academic research, personal study,
14// teaching, education and corporate research & development.
15// Illustrative examples of commercial use are distributing products for
16// commercial advantage and providing services using the software for
17// commercial advantage.
18//
19// If you wish to use this software or functionality therein that may be
20// covered by patents for commercial use, please contact:
21//     Director of Intellectual Property Licensing
22//     Office of Strategy and Technology
23//     Hewlett-Packard Company
24//     1501 Page Mill Road
25//     Palo Alto, California  94304
26//
27// Redistributions of source code must retain the above copyright notice,
28// this list of conditions and the following disclaimer.  Redistributions
29// in binary form must reproduce the above copyright notice, this list of
30// conditions and the following disclaimer in the documentation and/or
31// other materials provided with the distribution.  Neither the name of
32// the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
33// contributors may be used to endorse or promote products derived from
34// this software without specific prior written permission.  No right of
35// sublicense is granted herewith.  Derivatives of the software and
36// output created using the software may be prepared, but only for
37// Non-Commercial Uses.  Derivatives of the software may be shared with
38// others provided: (i) the others agree to abide by the list of
39// conditions herein which includes the Non-Commercial Use restrictions;
40// and (ii) such Derivatives of the software include the above copyright
41// notice to acknowledge the contribution from this software where
42// applicable, this list of conditions and the disclaimer below.
43//
44// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
45// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
46// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
47// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
48// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
49// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
50// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
51// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
52// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
53// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
54// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
55//
56// Authors: Gabe Black
57
58////////////////////////////////////////////////////////////////////
59//
60// "Format" which describes an instruction whose only purpose is to
61// call a syscall in SE mode.
62//
63
64output header {{
65    class SyscallInst : public X86ISA::X86StaticInst
66    {
67      public:
68        static const RegIndex foldOBit = 0;
69        /// Constructor
70        SyscallInst(const char *_mnemonic, ExtMachInst _machInst,
71                OpClass __opClass) :
72            X86ISA::X86StaticInst(_mnemonic, _machInst, __opClass)
73        {
74        }
75
76        std::string generateDisassembly(Addr pc,
77                const SymbolTable *symtab) const;
78    };
79}};
80
81output decoder {{
82    std::string SyscallInst::generateDisassembly(Addr PC,
83            const SymbolTable *symtab) const
84    {
85        std::stringstream response;
86
87        printMnemonic(response, mnemonic);
88        ccprintf(response, " ");
89        printReg(response, _srcRegIdx[0], machInst.opSize);
90        return response.str();
91    }
92}};
93
94def template SyscallExecute {{
95    Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
96            Trace::InstRecord *traceData) const
97    {
98        Fault fault = NoFault;
99        %(op_decl)s;
100        %(op_rd)s;
101        %(code)s;
102        return fault;
103    }
104}};
105
106def format SyscallInst(code, *opt_flags) {{
107    iop = InstObjParams(name, Name, 'SyscallInst', code, opt_flags)
108    header_output = BasicDeclare.subst(iop)
109    decoder_output = BasicConstructor.subst(iop)
110    decode_block = BasicDecode.subst(iop)
111    exec_output = SyscallExecute.subst(iop)
112}};
113
114