basicmem.isa revision 12236:126ac9da6050 
1// -*- mode:c++ -*-
2
3// Copyright (c) 2006-2007 The Regents of The University of Michigan
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met: redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer;
10// redistributions in binary form must reproduce the above copyright
11// notice, this list of conditions and the following disclaimer in the
12// documentation and/or other materials provided with the distribution;
13// neither the name of the copyright holders nor the names of its
14// contributors may be used to endorse or promote products derived from
15// this software without specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28//
29// Authors: Ali Saidi
30//          Gabe Black
31
32////////////////////////////////////////////////////////////////////
33//
34// Mem instructions
35//
36
37def template MemDeclare {{
38        /**
39         * Static instruction class for "%(mnemonic)s".
40         */
41        class %(class_name)s : public %(base_class)s
42        {
43          public:
44
45            /// Constructor.
46            %(class_name)s(ExtMachInst machInst);
47
48            Fault execute(ExecContext *, Trace::InstRecord *) const;
49            Fault eaComp(ExecContext *, Trace::InstRecord *) const;
50            Fault initiateAcc(ExecContext *, Trace::InstRecord *) const;
51            Fault completeAcc(PacketPtr, ExecContext *,
52                              Trace::InstRecord *) const;
53        };
54}};
55
56let {{
57    def doMemFormat(code, execute, faultCode, name, Name, asi, opt_flags, postacc_code = ''):
58        addrCalcReg = 'EA = Rs1 + Rs2;'
59        addrCalcImm = 'EA = Rs1 + imm;'
60        iop = InstObjParams(name, Name, 'Mem',
61                {"code": code, "postacc_code" : postacc_code,
62                 "fault_check": faultCode, "ea_code": addrCalcReg,
63                 "EA_trunc": TruncateEA}, opt_flags)
64        iop_imm = InstObjParams(name, Name + "Imm", 'MemImm',
65                {"code": code, "postacc_code" : postacc_code,
66                 "fault_check": faultCode, "ea_code": addrCalcImm,
67                 "EA_trunc": TruncateEA}, opt_flags)
68        header_output = MemDeclare.subst(iop) + MemDeclare.subst(iop_imm)
69        decoder_output = BasicConstructor.subst(iop) + BasicConstructor.subst(iop_imm)
70        decode_block = ROrImmDecode.subst(iop)
71        exec_output = doDualSplitExecute(code, postacc_code, addrCalcReg,
72                addrCalcImm, execute, faultCode, name, name + "Imm",
73                Name, Name + "Imm", asi, opt_flags)
74        exec_output +=  EACompExecute.subst(iop);
75        exec_output +=  EACompExecute.subst(iop_imm);
76        return (header_output, decoder_output, exec_output, decode_block)
77}};
78
79def format LoadAlt(code, *opt_flags) {{
80        code = filterDoubles(code)
81        (header_output,
82         decoder_output,
83         exec_output,
84         decode_block) = doMemFormat(code, LoadFuncs,
85            AlternateASIPrivFaultCheck, name, Name, "EXT_ASI", opt_flags)
86}};
87
88def format StoreAlt(code, *opt_flags) {{
89        code = filterDoubles(code)
90        (header_output,
91         decoder_output,
92         exec_output,
93         decode_block) = doMemFormat(code, StoreFuncs,
94            AlternateASIPrivFaultCheck, name, Name, "EXT_ASI", opt_flags)
95}};
96
97def format Load(code, *opt_flags) {{
98        code = filterDoubles(code)
99        (header_output,
100         decoder_output,
101         exec_output,
102         decode_block) = doMemFormat(code,
103             LoadFuncs, '', name, Name, 0, opt_flags)
104}};
105
106def format Store(code, *opt_flags) {{
107        code = filterDoubles(code)
108        (header_output,
109         decoder_output,
110         exec_output,
111         decode_block) = doMemFormat(code,
112             StoreFuncs, '', name, Name, 0, opt_flags)
113}};
114
115def format StoreFsr(code, *opt_flags) {{
116        code = filterDoubles(code)
117        (header_output,
118         decoder_output,
119         exec_output,
120         decode_block) = doMemFormat(code,
121             StoreFuncs, '', name, Name, 0, opt_flags,
122             'Fsr = insertBits(Fsr,16,14,0);')
123}};
124
125def format TwinLoad(code, *opt_flags) {{
126        (header_output,
127         decoder_output,
128         exec_output,
129         decode_block) = doMemFormat(code, LoadFuncs,
130            AlternateASIPrivFaultCheck + TwinAlignmentFaultCheck,
131            name, Name, "EXT_ASI", opt_flags)
132}};
133
134