basicmem.isa revision 5893:41b18fe25a0e 
1// Copyright (c) 2006-2007 The Regents of The University of Michigan
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met: redistributions of source code must retain the above copyright
7// notice, this list of conditions and the following disclaimer;
8// redistributions in binary form must reproduce the above copyright
9// notice, this list of conditions and the following disclaimer in the
10// documentation and/or other materials provided with the distribution;
11// neither the name of the copyright holders nor the names of its
12// contributors may be used to endorse or promote products derived from
13// this software without specific prior written permission.
14//
15// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26//
27// Authors: Ali Saidi
28//          Gabe Black
29
30////////////////////////////////////////////////////////////////////
31//
32// Mem instructions
33//
34
35def template MemDeclare {{
36        /**
37         * Static instruction class for "%(mnemonic)s".
38         */
39        class %(class_name)s : public %(base_class)s
40        {
41          public:
42
43            /// Constructor.
44            %(class_name)s(ExtMachInst machInst);
45
46            %(BasicExecDeclare)s
47
48            %(InitiateAccDeclare)s
49
50            %(CompleteAccDeclare)s
51        };
52}};
53
54let {{
55    def doMemFormat(code, execute, faultCode, name, Name, asi, opt_flags, postacc_code = ''):
56        addrCalcReg = 'EA = Rs1 + Rs2;'
57        addrCalcImm = 'EA = Rs1 + imm;'
58        iop = InstObjParams(name, Name, 'Mem',
59                {"code": code, "postacc_code" : postacc_code,
60                 "fault_check": faultCode, "ea_code": addrCalcReg,
61                 "EA_trunc": TruncateEA}, opt_flags)
62        iop_imm = InstObjParams(name, Name + "Imm", 'MemImm',
63                {"code": code, "postacc_code" : postacc_code,
64                 "fault_check": faultCode, "ea_code": addrCalcImm,
65                 "EA_trunc": TruncateEA}, opt_flags)
66        header_output = MemDeclare.subst(iop) + MemDeclare.subst(iop_imm)
67        decoder_output = BasicConstructor.subst(iop) + BasicConstructor.subst(iop_imm)
68        decode_block = ROrImmDecode.subst(iop)
69        exec_output = doDualSplitExecute(code, postacc_code, addrCalcReg,
70                addrCalcImm, execute, faultCode, name, name + "Imm",
71                Name, Name + "Imm", asi, opt_flags)
72        return (header_output, decoder_output, exec_output, decode_block)
73}};
74
75def format LoadAlt(code, *opt_flags) {{
76        code = filterDoubles(code)
77        (header_output,
78         decoder_output,
79         exec_output,
80         decode_block) = doMemFormat(code, LoadFuncs,
81            AlternateASIPrivFaultCheck, name, Name, "EXT_ASI", opt_flags)
82}};
83
84def format StoreAlt(code, *opt_flags) {{
85        code = filterDoubles(code)
86        (header_output,
87         decoder_output,
88         exec_output,
89         decode_block) = doMemFormat(code, StoreFuncs,
90            AlternateASIPrivFaultCheck, name, Name, "EXT_ASI", opt_flags)
91}};
92
93def format Load(code, *opt_flags) {{
94        code = filterDoubles(code)
95        (header_output,
96         decoder_output,
97         exec_output,
98         decode_block) = doMemFormat(code,
99             LoadFuncs, '', name, Name, 0, opt_flags)
100}};
101
102def format Store(code, *opt_flags) {{
103        code = filterDoubles(code)
104        (header_output,
105         decoder_output,
106         exec_output,
107         decode_block) = doMemFormat(code,
108             StoreFuncs, '', name, Name, 0, opt_flags)
109}};
110
111def format StoreFsr(code, *opt_flags) {{
112        code = filterDoubles(code)
113        (header_output,
114         decoder_output,
115         exec_output,
116         decode_block) = doMemFormat(code,
117             StoreFuncs, '', name, Name, 0, opt_flags,
118             'Fsr = insertBits(Fsr,16,14,0);')
119}};
120
121def format TwinLoad(code, *opt_flags) {{
122        (header_output,
123         decoder_output,
124         exec_output,
125         decode_block) = doMemFormat(code, LoadFuncs,
126            AlternateASIPrivFaultCheck + TwinAlignmentFaultCheck,
127            name, Name, "EXT_ASI", opt_flags)
128}};
129
130