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

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74 std::string Mem::generateDisassembly(Addr pc,
75 const SymbolTable *symtab) const
76 {
77 std::stringstream response;
78 bool load = flags[IsLoad];
79 bool store = flags[IsStore];
80
81 printMnemonic(response, mnemonic);
82 if (store) {
83 printReg(response, _srcRegIdx[0]);
84 ccprintf(response, ", ");
85 }
86 ccprintf(response, "[");
87 if (_srcRegIdx[!store ? 0 : 1] != 0) {
88 printSrcReg(response, !store ? 0 : 1);
89 ccprintf(response, " + ");
90 }
91 printSrcReg(response, !store ? 1 : 2);
92 ccprintf(response, "]");
93 if (load) {
94 ccprintf(response, ", ");
95 printReg(response, _destRegIdx[0]);
96 }
97
98 return response.str();
99 }
100
101 std::string MemImm::generateDisassembly(Addr pc,
102 const SymbolTable *symtab) const
103 {
104 std::stringstream response;
105 bool load = flags[IsLoad];
106 bool save = flags[IsStore];
107
108 printMnemonic(response, mnemonic);
109 if (save) {
110 printReg(response, _srcRegIdx[0]);
111 ccprintf(response, ", ");
112 }
113 ccprintf(response, "[");
114 if (_srcRegIdx[!save ? 0 : 1] != 0) {
115 printReg(response, _srcRegIdx[!save ? 0 : 1]);
116 ccprintf(response, " + ");
117 }
118 if (imm >= 0)
119 ccprintf(response, "0x%x]", imm);
120 else
121 ccprintf(response, "-0x%x]", -imm);
122 if (load) {
123 ccprintf(response, ", ");
124 printReg(response, _destRegIdx[0]);
125 }
126
127 return response.str();
128 }
129}};
130
131// This template provides the execute functions for a load
132def template LoadExecute {{
133 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
134 Trace::InstRecord *traceData) const
135 {
136 Fault fault = NoFault;
137 Addr EA;
138 %(fp_enable_check)s;
139 %(op_decl)s;
140 %(op_rd)s;
141 %(ea_code)s;
142 DPRINTF(Sparc, "%s: The address is 0x%x\n", mnemonic, EA);
143 %(fault_check)s;
144 if (fault == NoFault) {
145 %(EA_trunc)s
146 fault = xc->read(EA, (%(mem_acc_type)s%(mem_acc_size)s_t&)Mem, %(asi_val)s);
147 }
148 if (fault == NoFault) {
149 %(code)s;
150 }
151 if (fault == NoFault) {
152 // Write the resulting state to the execution context
153 %(op_wb)s;
154 }
155
156 return fault;
157 }
158}};
159
160def template LoadInitiateAcc {{
161 Fault %(class_name)s::initiateAcc(%(CPU_exec_context)s * xc,
162 Trace::InstRecord * traceData) const
163 {
164 Fault fault = NoFault;
165 Addr EA;
166 %(fp_enable_check)s;
167 %(op_decl)s;
168 %(op_rd)s;
169 %(ea_code)s;
170 DPRINTF(Sparc, "%s: The address is 0x%x\n", mnemonic, EA);
171 %(fault_check)s;
172 if (fault == NoFault) {
173 %(EA_trunc)s
174 fault = xc->read(EA, (%(mem_acc_type)s%(mem_acc_size)s_t&)Mem, %(asi_val)s);
175 }
176 return fault;
177 }
178}};
179
180def template LoadCompleteAcc {{
181 Fault %(class_name)s::completeAcc(PacketPtr pkt, %(CPU_exec_context)s * xc,
182 Trace::InstRecord * traceData) const
183 {
184 Fault fault = NoFault;
185 %(op_decl)s;
186 %(op_rd)s;
187 Mem = pkt->get<typeof(Mem)>();
188 %(code)s;
189 if (fault == NoFault) {
190 %(op_wb)s;
191 }
192 return fault;
193 }
194}};
195
196// This template provides the execute functions for a store
197def template StoreExecute {{
198 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
199 Trace::InstRecord *traceData) const
200 {
201 Fault fault = NoFault;
202 // This is to support the conditional store in cas instructions.
203 // It should be optomized out in all the others
204 bool storeCond = true;
205 Addr EA;
206 %(fp_enable_check)s;
207 %(op_decl)s;
208 %(op_rd)s;
209 %(ea_code)s;
210 DPRINTF(Sparc, "%s: The address is 0x%x\n", mnemonic, EA);
211 %(fault_check)s;
212 if (fault == NoFault) {
213 %(code)s;
214 }
215 if (storeCond && fault == NoFault) {
216 %(EA_trunc)s
217 fault = xc->write((%(mem_acc_type)s%(mem_acc_size)s_t)Mem,
218 EA, %(asi_val)s, 0);
219 }
220 if (fault == NoFault) {
221 // Write the resulting state to the execution context
222 %(op_wb)s;
223 }
224
225 return fault;
226 }
227}};
228
229def template StoreInitiateAcc {{
230 Fault %(class_name)s::initiateAcc(%(CPU_exec_context)s * xc,

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235 Addr EA;
236 %(fp_enable_check)s;
237 %(op_decl)s;
238
239 %(op_rd)s;
240 %(ea_code)s;
241 DPRINTF(Sparc, "%s: The address is 0x%x\n", mnemonic, EA);
242 %(fault_check)s;
243 if (fault == NoFault) {
244 %(code)s;
245 }
246 if (storeCond && fault == NoFault) {
247 %(EA_trunc)s
248 fault = xc->write((%(mem_acc_type)s%(mem_acc_size)s_t)Mem,
249 EA, %(asi_val)s, 0);
250 }
251 return fault;
252 }
253}};
254
255def template StoreCompleteAcc {{
256 Fault %(class_name)s::completeAcc(PacketPtr, %(CPU_exec_context)s * xc,
257 Trace::InstRecord * traceData) const
258 {
259 return NoFault;
260 }
261}};
262
263// This delcares the initiateAcc function in memory operations
264def template InitiateAccDeclare {{
265 Fault initiateAcc(%(CPU_exec_context)s *, Trace::InstRecord *) const;
266}};
267
268// This declares the completeAcc function in memory operations
269def template CompleteAccDeclare {{
270 Fault completeAcc(PacketPtr, %(CPU_exec_context)s *, Trace::InstRecord *) const;
271}};
272
273// Here are some code snippets which check for various fault conditions
274let {{
275 LoadFuncs = [LoadExecute, LoadInitiateAcc, LoadCompleteAcc]
276 StoreFuncs = [StoreExecute, StoreInitiateAcc, StoreCompleteAcc]
277
278 # The LSB can be zero, since it's really the MSB in doubles and quads
279 # and we're dealing with doubles
280 BlockAlignmentFaultCheck = '''
281 if (RD & 0xe)
282 fault = new IllegalInstruction;
283 else if (EA & 0x3f)
284 fault = new MemAddressNotAligned;
285 '''
286 TwinAlignmentFaultCheck = '''
287 if (RD & 0x1)
288 fault = new IllegalInstruction;
289 else if (EA & 0xf)
290 fault = new MemAddressNotAligned;
291 '''
292 # XXX Need to take care of pstate.hpriv as well. The lower ASIs
293 # are split into ones that are available in priv and hpriv, and
294 # those that are only available in hpriv
295 AlternateASIPrivFaultCheck = '''
296 if ((!bits(Pstate,2,2) && !bits(Hpstate,2,2) &&
297 !asiIsUnPriv((ASI)EXT_ASI)) ||
298 (!bits(Hpstate,2,2) && asiIsHPriv((ASI)EXT_ASI)))
299 fault = new PrivilegedAction;
300 else if (asiIsAsIfUser((ASI)EXT_ASI) && !bits(Pstate,2,2))
301 fault = new PrivilegedAction;
302 '''
303
304 TruncateEA = '''
305#if !FULL_SYSTEM
306 EA = Pstate<3:> ? EA<31:0> : EA;
307#endif
308 '''
309}};
310
311// A simple function to generate the name of the macro op of a certain
312// instruction at a certain micropc
313let {{
314 def makeMicroName(name, microPc):
315 return name + "::" + name + "_" + str(microPc)
316}};
317
318// This function properly generates the execute functions for one of the
319// templates above. This is needed because in one case, ea computation,
320// fault checks and the actual code all occur in the same function,
321// and in the other they're distributed across two. Also note that for
322// execute functions, the name of the base class doesn't matter.
323let {{
324 def doSplitExecute(execute, name, Name, asi, opt_flags, microParam):
325 microParam["asi_val"] = asi;
326 iop = InstObjParams(name, Name, '', microParam, opt_flags)
327 (execf, initf, compf) = execute
328 return execf.subst(iop) + initf.subst(iop) + compf.subst(iop)
329
330

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