1// -*- mode:c++ -*-
2
3// Copyright (c) 2010 ARM Limited
4// All rights reserved
5//
6// The license below extends only to copyright in the software and shall
7// not be construed as granting a license to any other intellectual
8// property including but not limited to intellectual property relating
9// to a hardware implementation of the functionality of the software
10// licensed hereunder. You may use the software subject to the license
11// terms below provided that you ensure that this notice is replicated
12// unmodified and in its entirety in all distributions of the software,
13// modified or unmodified, in source code or in binary form.
14//
15// Redistribution and use in source and binary forms, with or without
16// modification, are permitted provided that the following conditions are
17// met: redistributions of source code must retain the above copyright
18// notice, this list of conditions and the following disclaimer;
19// redistributions in binary form must reproduce the above copyright
20// notice, this list of conditions and the following disclaimer in the
21// documentation and/or other materials provided with the distribution;
22// neither the name of the copyright holders nor the names of its
23// contributors may be used to endorse or promote products derived from
24// this software without specific prior written permission.
25//
26// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37//
38// Authors: Gabe Black
39
40let {{
41
42 header_output = ""
43 decoder_output = ""
44 exec_output = ""
45
46 def storeImmClassName(post, add, writeback, \
47 size=4, sign=False, user=False):
48 return memClassName("STORE_IMM", post, add, writeback,
49 size, sign, user)
50
51 def storeRegClassName(post, add, writeback, \
52 size=4, sign=False, user=False):
53 return memClassName("STORE_REG", post, add, writeback,
54 size, sign, user)
55
56 def storeDoubleImmClassName(post, add, writeback):
57 return memClassName("STORE_IMMD", post, add, writeback,
58 4, False, False)
59
60 def storeDoubleRegClassName(post, add, writeback):
61 return memClassName("STORE_REGD", post, add, writeback,
62 4, False, False)
63
64 def emitStore(name, Name, imm, eaCode, accCode, postAccCode, \
65 memFlags, instFlags, base, double=False, strex=False,
66 execTemplateBase = 'Store'):
67 global header_output, decoder_output, exec_output
68
69 (newHeader,
70 newDecoder,
71 newExec) = loadStoreBase(name, Name, imm,
72 eaCode, accCode, postAccCode,
73 memFlags, instFlags, double, strex,
74 base, execTemplateBase = execTemplateBase)
75
76 header_output += newHeader
77 decoder_output += newDecoder
78 exec_output += newExec
79
80 def buildImmStore(mnem, post, add, writeback, \
81 size=4, sign=False, user=False, \
82 strex=False, vstr=False):
83 name = mnem
84 Name = storeImmClassName(post, add, writeback, \
85 size, sign, user)
86
87 if add:
88 op = " +"
89 else:
90 op = " -"
91
92 offset = op + " imm"
93 eaCode = "EA = Base"
94 if not post:
95 eaCode += offset
96 eaCode += ";"
97
98 if vstr:
99 accCode = '''
100 Mem%(suffix)s = cSwap(FpDest.uw, ((CPSR)Cpsr).e);
101 ''' % { "suffix" : buildMemSuffix(sign, size) }
102 else:
103 accCode = '''
104 Mem%(suffix)s = cSwap(Dest%(suffix)s, ((CPSR)Cpsr).e);
105 ''' % { "suffix" : buildMemSuffix(sign, size) }
106 if writeback:
107 accCode += "Base = Base %s;\n" % offset
108
109 memFlags = ["ArmISA::TLB::MustBeOne", "%d" % (size - 1)]
|
113 if strex:
114 memFlags.append("Request::LLSC")
115 Name = "%s_%s" % (mnem.upper(), Name)
116 base = buildMemBase("MemoryExImm", post, writeback)
117 postAccCode = "Result = !writeResult;"
118 execTemplateBase = 'StoreEx'
119 else:
120 if vstr:
121 Name = "%s_%s" % (mnem.upper(), Name)
122 else:
123 memFlags.append("ArmISA::TLB::AllowUnaligned")
124 base = buildMemBase("MemoryImm", post, writeback)
125 postAccCode = ""
126 execTemplateBase = 'Store'
127
128 emitStore(name, Name, True, eaCode, accCode, postAccCode, \
129 memFlags, [], base, strex=strex,
130 execTemplateBase = execTemplateBase)
131
132 def buildSrsStore(mnem, post, add, writeback):
133 name = mnem
134 Name = "SRS_" + storeImmClassName(post, add, writeback, 8)
135
136 offset = 0
137 if post != add:
138 offset += 4
139 if not add:
140 offset -= 8
141
142 eaCode = "EA = SpMode + %d;" % offset
143
144 wbDiff = -8
145 if add:
146 wbDiff = 8
147 accCode = '''
148 CPSR cpsr = Cpsr;
149 Mem.ud = (uint64_t)cSwap(LR.uw, cpsr.e) |
150 ((uint64_t)cSwap(Spsr.uw, cpsr.e) << 32);
151 '''
152 if writeback:
153 accCode += "SpMode = SpMode + %s;\n" % wbDiff
154
155 global header_output, decoder_output, exec_output
156
157 (newHeader,
158 newDecoder,
159 newExec) = SrsBase(name, Name, eaCode, accCode,
160 ["ArmISA::TLB::AlignWord", "ArmISA::TLB::MustBeOne"], [])
161
162 header_output += newHeader
163 decoder_output += newDecoder
164 exec_output += newExec
165
166 def buildRegStore(mnem, post, add, writeback, \
167 size=4, sign=False, user=False, strex=False):
168 name = mnem
169 Name = storeRegClassName(post, add, writeback,
170 size, sign, user)
171
172 if add:
173 op = " +"
174 else:
175 op = " -"
176
177 offset = op + " shift_rm_imm(Index, shiftAmt," + \
178 " shiftType, CondCodes<29:>)"
179 eaCode = "EA = Base"
180 if not post:
181 eaCode += offset
182 eaCode += ";"
183
184 accCode = "Mem%(suffix)s = cSwap(Dest%(suffix)s, ((CPSR)Cpsr).e);" % \
185 { "suffix" : buildMemSuffix(sign, size) }
186 if writeback:
187 accCode += "Base = Base %s;\n" % offset
188 base = buildMemBase("MemoryReg", post, writeback)
189
|
199 def buildDoubleImmStore(mnem, post, add, writeback, \
200 strex=False, vstr=False):
201 name = mnem
202 Name = storeDoubleImmClassName(post, add, writeback)
203
204 if add:
205 op = " +"
206 else:
207 op = " -"
208
209 offset = op + " imm"
210 eaCode = "EA = Base"
211 if not post:
212 eaCode += offset
213 eaCode += ";"
214
215 if vstr:
216 accCode = '''
217 uint64_t swappedMem = (uint64_t)FpDest.uw |
218 ((uint64_t)FpDest2.uw << 32);
219 Mem.ud = cSwap(swappedMem, ((CPSR)Cpsr).e);
220 '''
221 else:
222 accCode = '''
223 CPSR cpsr = Cpsr;
224 Mem.ud = (uint64_t)cSwap(Dest.uw, cpsr.e) |
225 ((uint64_t)cSwap(Dest2.uw, cpsr.e) << 32);
226 '''
227 if writeback:
228 accCode += "Base = Base %s;\n" % offset
229
230 memFlags = ["ArmISA::TLB::MustBeOne",
231 "ArmISA::TLB::AlignWord"]
232 if strex:
233 memFlags.append("Request::LLSC")
234 base = buildMemBase("MemoryExDImm", post, writeback)
235 postAccCode = "Result = !writeResult;"
236 else:
237 base = buildMemBase("MemoryDImm", post, writeback)
238 postAccCode = ""
239 if vstr or strex:
240 Name = "%s_%s" % (mnem.upper(), Name)
241
242 emitStore(name, Name, True, eaCode, accCode, postAccCode, \
243 memFlags, [], base, double=True, strex=strex)
244
245 def buildDoubleRegStore(mnem, post, add, writeback):
246 name = mnem
247 Name = storeDoubleRegClassName(post, add, writeback)
248
249 if add:
250 op = " +"
251 else:
252 op = " -"
253
254 offset = op + " shift_rm_imm(Index, shiftAmt," + \
255 " shiftType, CondCodes<29:>)"
256 eaCode = "EA = Base"
257 if not post:
258 eaCode += offset
259 eaCode += ";"
260
261 accCode = '''
262 CPSR cpsr = Cpsr;
263 Mem.ud = (uint64_t)cSwap(Dest.uw, cpsr.e) |
264 ((uint64_t)cSwap(Dest2.uw, cpsr.e) << 32);
265 '''
266 if writeback:
267 accCode += "Base = Base %s;\n" % offset
268 base = buildMemBase("MemoryDReg", post, writeback)
269
270 memFlags = ["ArmISA::TLB::MustBeOne",
271 "ArmISA::TLB::AlignWord"]
272
273 emitStore(name, Name, False, eaCode, accCode, "", \
274 memFlags, [], base, double=True)
275
276 def buildStores(mnem, size=4, sign=False, user=False):
277 buildImmStore(mnem, True, True, True, size, sign, user)
278 buildRegStore(mnem, True, True, True, size, sign, user)
279 buildImmStore(mnem, True, False, True, size, sign, user)
280 buildRegStore(mnem, True, False, True, size, sign, user)
281 buildImmStore(mnem, False, True, True, size, sign, user)
282 buildRegStore(mnem, False, True, True, size, sign, user)
283 buildImmStore(mnem, False, False, True, size, sign, user)
284 buildRegStore(mnem, False, False, True, size, sign, user)
285 buildImmStore(mnem, False, True, False, size, sign, user)
286 buildRegStore(mnem, False, True, False, size, sign, user)
287 buildImmStore(mnem, False, False, False, size, sign, user)
288 buildRegStore(mnem, False, False, False, size, sign, user)
289
290 def buildDoubleStores(mnem):
291 buildDoubleImmStore(mnem, True, True, True)
292 buildDoubleRegStore(mnem, True, True, True)
293 buildDoubleImmStore(mnem, True, False, True)
294 buildDoubleRegStore(mnem, True, False, True)
295 buildDoubleImmStore(mnem, False, True, True)
296 buildDoubleRegStore(mnem, False, True, True)
297 buildDoubleImmStore(mnem, False, False, True)
298 buildDoubleRegStore(mnem, False, False, True)
299 buildDoubleImmStore(mnem, False, True, False)
300 buildDoubleRegStore(mnem, False, True, False)
301 buildDoubleImmStore(mnem, False, False, False)
302 buildDoubleRegStore(mnem, False, False, False)
303
304 def buildSrsStores(mnem):
305 buildSrsStore(mnem, True, True, True)
306 buildSrsStore(mnem, True, True, False)
307 buildSrsStore(mnem, True, False, True)
308 buildSrsStore(mnem, True, False, False)
309 buildSrsStore(mnem, False, True, True)
310 buildSrsStore(mnem, False, True, False)
311 buildSrsStore(mnem, False, False, True)
312 buildSrsStore(mnem, False, False, False)
313
314 buildStores("str")
315 buildStores("strt", user=True)
316 buildStores("strb", size=1)
317 buildStores("strbt", size=1, user=True)
318 buildStores("strh", size=2)
319 buildStores("strht", size=2, user=True)
320
321 buildSrsStores("srs")
322
323 buildDoubleStores("strd")
324
325 buildImmStore("strex", False, True, False, size=4, strex=True)
326 buildImmStore("strexh", False, True, False, size=2, strex=True)
327 buildImmStore("strexb", False, True, False, size=1, strex=True)
328 buildDoubleImmStore("strexd", False, True, False, strex=True)
329
330 buildImmStore("vstr", False, True, False, size=4, vstr=True)
331 buildImmStore("vstr", False, False, False, size=4, vstr=True)
332 buildDoubleImmStore("vstr", False, True, False, vstr=True)
333 buildDoubleImmStore("vstr", False, False, False, vstr=True)
334}};
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