| 3// Copyright (c) 2003-2006 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: Steve Reinhardt
30// Korey Sewell
31
|
3let {{
4def LoadStoreBase(name, Name, ea_code, memacc_code, mem_flags, inst_flags,
5 postacc_code = '', base_class = 'Memory',
6 decode_template = BasicDecode, exec_template_base = ''):
7 # Make sure flags are in lists (convert to lists if not).
8 mem_flags = makeList(mem_flags)
9 inst_flags = makeList(inst_flags)
10
11 # add hook to get effective addresses into execution trace output.
12 ea_code += '\nif (traceData) { traceData->setAddr(EA); }\n'
13
14 # generate code block objects
15 ea_cblk = CodeBlock(ea_code)
16 memacc_cblk = CodeBlock(memacc_code)
17 postacc_cblk = CodeBlock(postacc_code)
18
19 # Some CPU models execute the memory operation as an atomic unit,
20 # while others want to separate them into an effective address
21 # computation and a memory access operation. As a result, we need
22 # to generate three StaticInst objects. Note that the latter two
23 # are nested inside the larger "atomic" one.
24
25 # generate InstObjParams for EAComp object
26 ea_iop = InstObjParams(name, Name, base_class, ea_cblk, inst_flags)
27
28 # generate InstObjParams for MemAcc object
29 memacc_iop = InstObjParams(name, Name, base_class, memacc_cblk, inst_flags)
30 # in the split execution model, the MemAcc portion is responsible
31 # for the post-access code.
32 memacc_iop.postacc_code = postacc_cblk.code
33
34 # generate InstObjParams for InitiateAcc, CompleteAcc object
35 # The code used depends on the template being used
36 if (exec_template_base == 'Load'):
37 initiateacc_cblk = CodeBlock(ea_code + memacc_code)
38 completeacc_cblk = CodeBlock(memacc_code + postacc_code)
39 elif (exec_template_base == 'Store'):
40 initiateacc_cblk = CodeBlock(ea_code + memacc_code)
41 completeacc_cblk = CodeBlock(postacc_code)
42 else:
43 initiateacc_cblk = ''
44 completeacc_cblk = ''
45
46 initiateacc_iop = InstObjParams(name, Name, base_class, initiateacc_cblk,
47 inst_flags)
48
49 completeacc_iop = InstObjParams(name, Name, base_class, completeacc_cblk,
50 inst_flags)
51
52 if (exec_template_base == 'Load'):
53 initiateacc_iop.ea_code = ea_cblk.code
54 initiateacc_iop.memacc_code = memacc_cblk.code
55 completeacc_iop.memacc_code = memacc_cblk.code
56 completeacc_iop.postacc_code = postacc_cblk.code
57 elif (exec_template_base == 'Store'):
58 initiateacc_iop.ea_code = ea_cblk.code
59 initiateacc_iop.memacc_code = memacc_cblk.code
60 completeacc_iop.postacc_code = postacc_cblk.code
61
62 # generate InstObjParams for unified execution
63 cblk = CodeBlock(ea_code + memacc_code + postacc_code)
64 iop = InstObjParams(name, Name, base_class, cblk, inst_flags)
65
66 iop.ea_constructor = ea_cblk.constructor
67 iop.ea_code = ea_cblk.code
68 iop.memacc_constructor = memacc_cblk.constructor
69 iop.memacc_code = memacc_cblk.code
70 iop.postacc_code = postacc_cblk.code
71
72 if mem_flags:
73 s = '\n\tmemAccessFlags = ' + string.join(mem_flags, '|') + ';'
74 iop.constructor += s
75 memacc_iop.constructor += s
76
77 # select templates
78 memAccExecTemplate = eval(exec_template_base + 'MemAccExecute')
79 fullExecTemplate = eval(exec_template_base + 'Execute')
80 initiateAccTemplate = eval(exec_template_base + 'InitiateAcc')
81 completeAccTemplate = eval(exec_template_base + 'CompleteAcc')
82
83 # (header_output, decoder_output, decode_block, exec_output)
84 return (LoadStoreDeclare.subst(iop), LoadStoreConstructor.subst(iop),
85 decode_template.subst(iop),
86 EACompExecute.subst(ea_iop)
87 + memAccExecTemplate.subst(memacc_iop)
88 + fullExecTemplate.subst(iop)
89 + initiateAccTemplate.subst(initiateacc_iop)
90 + completeAccTemplate.subst(completeacc_iop))
91}};
92
93output header {{
94 std::string inst2string(MachInst machInst);
95}};
96
97output decoder {{
98
99std::string inst2string(MachInst machInst)
100{
101 string str = "";
102 uint32_t mask = 0x80000000;
103
104 for(int i=0; i < 32; i++) {
105 if ((machInst & mask) == 0) {
106 str += "0";
107 } else {
108 str += "1";
109 }
110
111 mask = mask >> 1;
112 }
113
114 return str;
115}
116
117}};
118output exec {{
119
120 using namespace MipsISA;
121
122 /// CLEAR ALL CPU INST/EXE HAZARDS
123 inline void
124 clear_exe_inst_hazards()
125 {
126 //CODE HERE
127 }
128
129
130 /// Check "FP enabled" machine status bit. Called when executing any FP
131 /// instruction in full-system mode.
132 /// @retval Full-system mode: NoFault if FP is enabled, FenFault
133 /// if not. Non-full-system mode: always returns NoFault.
134#if FULL_SYSTEM
135 inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc)
136 {
137 Fault fault = NoFault; // dummy... this ipr access should not fault
138 if (!Mips34k::ICSR_FPE(xc->readIpr(MipsISA::IPR_ICSR, fault))) {
139 fault = FloatEnableFault;
140 }
141 return fault;
142 }
143#else
144 inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc)
145 {
146 return NoFault;
147 }
148#endif
149
150
151
152}};
153
154
| 32let {{
33def LoadStoreBase(name, Name, ea_code, memacc_code, mem_flags, inst_flags,
34 postacc_code = '', base_class = 'Memory',
35 decode_template = BasicDecode, exec_template_base = ''):
36 # Make sure flags are in lists (convert to lists if not).
37 mem_flags = makeList(mem_flags)
38 inst_flags = makeList(inst_flags)
39
40 # add hook to get effective addresses into execution trace output.
41 ea_code += '\nif (traceData) { traceData->setAddr(EA); }\n'
42
43 # generate code block objects
44 ea_cblk = CodeBlock(ea_code)
45 memacc_cblk = CodeBlock(memacc_code)
46 postacc_cblk = CodeBlock(postacc_code)
47
48 # Some CPU models execute the memory operation as an atomic unit,
49 # while others want to separate them into an effective address
50 # computation and a memory access operation. As a result, we need
51 # to generate three StaticInst objects. Note that the latter two
52 # are nested inside the larger "atomic" one.
53
54 # generate InstObjParams for EAComp object
55 ea_iop = InstObjParams(name, Name, base_class, ea_cblk, inst_flags)
56
57 # generate InstObjParams for MemAcc object
58 memacc_iop = InstObjParams(name, Name, base_class, memacc_cblk, inst_flags)
59 # in the split execution model, the MemAcc portion is responsible
60 # for the post-access code.
61 memacc_iop.postacc_code = postacc_cblk.code
62
63 # generate InstObjParams for InitiateAcc, CompleteAcc object
64 # The code used depends on the template being used
65 if (exec_template_base == 'Load'):
66 initiateacc_cblk = CodeBlock(ea_code + memacc_code)
67 completeacc_cblk = CodeBlock(memacc_code + postacc_code)
68 elif (exec_template_base == 'Store'):
69 initiateacc_cblk = CodeBlock(ea_code + memacc_code)
70 completeacc_cblk = CodeBlock(postacc_code)
71 else:
72 initiateacc_cblk = ''
73 completeacc_cblk = ''
74
75 initiateacc_iop = InstObjParams(name, Name, base_class, initiateacc_cblk,
76 inst_flags)
77
78 completeacc_iop = InstObjParams(name, Name, base_class, completeacc_cblk,
79 inst_flags)
80
81 if (exec_template_base == 'Load'):
82 initiateacc_iop.ea_code = ea_cblk.code
83 initiateacc_iop.memacc_code = memacc_cblk.code
84 completeacc_iop.memacc_code = memacc_cblk.code
85 completeacc_iop.postacc_code = postacc_cblk.code
86 elif (exec_template_base == 'Store'):
87 initiateacc_iop.ea_code = ea_cblk.code
88 initiateacc_iop.memacc_code = memacc_cblk.code
89 completeacc_iop.postacc_code = postacc_cblk.code
90
91 # generate InstObjParams for unified execution
92 cblk = CodeBlock(ea_code + memacc_code + postacc_code)
93 iop = InstObjParams(name, Name, base_class, cblk, inst_flags)
94
95 iop.ea_constructor = ea_cblk.constructor
96 iop.ea_code = ea_cblk.code
97 iop.memacc_constructor = memacc_cblk.constructor
98 iop.memacc_code = memacc_cblk.code
99 iop.postacc_code = postacc_cblk.code
100
101 if mem_flags:
102 s = '\n\tmemAccessFlags = ' + string.join(mem_flags, '|') + ';'
103 iop.constructor += s
104 memacc_iop.constructor += s
105
106 # select templates
107 memAccExecTemplate = eval(exec_template_base + 'MemAccExecute')
108 fullExecTemplate = eval(exec_template_base + 'Execute')
109 initiateAccTemplate = eval(exec_template_base + 'InitiateAcc')
110 completeAccTemplate = eval(exec_template_base + 'CompleteAcc')
111
112 # (header_output, decoder_output, decode_block, exec_output)
113 return (LoadStoreDeclare.subst(iop), LoadStoreConstructor.subst(iop),
114 decode_template.subst(iop),
115 EACompExecute.subst(ea_iop)
116 + memAccExecTemplate.subst(memacc_iop)
117 + fullExecTemplate.subst(iop)
118 + initiateAccTemplate.subst(initiateacc_iop)
119 + completeAccTemplate.subst(completeacc_iop))
120}};
121
122output header {{
123 std::string inst2string(MachInst machInst);
124}};
125
126output decoder {{
127
128std::string inst2string(MachInst machInst)
129{
130 string str = "";
131 uint32_t mask = 0x80000000;
132
133 for(int i=0; i < 32; i++) {
134 if ((machInst & mask) == 0) {
135 str += "0";
136 } else {
137 str += "1";
138 }
139
140 mask = mask >> 1;
141 }
142
143 return str;
144}
145
146}};
147output exec {{
148
149 using namespace MipsISA;
150
151 /// CLEAR ALL CPU INST/EXE HAZARDS
152 inline void
153 clear_exe_inst_hazards()
154 {
155 //CODE HERE
156 }
157
158
159 /// Check "FP enabled" machine status bit. Called when executing any FP
160 /// instruction in full-system mode.
161 /// @retval Full-system mode: NoFault if FP is enabled, FenFault
162 /// if not. Non-full-system mode: always returns NoFault.
163#if FULL_SYSTEM
164 inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc)
165 {
166 Fault fault = NoFault; // dummy... this ipr access should not fault
167 if (!Mips34k::ICSR_FPE(xc->readIpr(MipsISA::IPR_ICSR, fault))) {
168 fault = FloatEnableFault;
169 }
170 return fault;
171 }
172#else
173 inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc)
174 {
175 return NoFault;
176 }
177#endif
178
179
180
181}};
182
183
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