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// Copyright (c) 2007-2008 The Florida State University
16// All rights reserved.
17//
18// Redistribution and use in source and binary forms, with or without
19// modification, are permitted provided that the following conditions are
20// met: redistributions of source code must retain the above copyright
21// notice, this list of conditions and the following disclaimer;
22// redistributions in binary form must reproduce the above copyright
23// notice, this list of conditions and the following disclaimer in the
24// documentation and/or other materials provided with the distribution;
25// neither the name of the copyright holders nor the names of its
26// contributors may be used to endorse or promote products derived from
27// this software without specific prior written permission.
28//
29// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40//
41// Authors: Gabe Black
42
43def format AddrMode2(imm) {{
44 if eval(imm):
45 imm = True
46 else:
47 imm = False
48
49 def buildPUBWLCase(p, u, b, w, l):
50 return (p << 4) + (u << 3) + (b << 2) + (w << 1) + (l << 0)
51
52 header_output = decoder_output = exec_output = ""
53 decode_block = "switch(PUBWL) {\n"
54
55 # Loop over all the values of p, u, b, w and l and build instructions and
56 # a decode block for them.
57 for p in (0, 1):
58 for u in (0, 1):
59 for b in (0, 1):
60 for w in (0, 1):
61 post = (p == 0)
62 user = (p == 0 and w == 1)
63 writeback = (p == 0 or w == 1)
64 add = (u == 1)
65 if b == 0:
66 size = 4
67 else:
68 size = 1
69 if add:
70 addStr = "true"
71 else:
72 addStr = "false"
73 if imm:
74 newDecode = "return new %s(machInst, RD, RN," + \
75 "%s, machInst.immed11_0);"
76 loadClass = loadImmClassName(post, add, writeback,
77 size, False, user)
78 storeClass = storeImmClassName(post, add, writeback,
79 size, False, user)
80 loadDecode = newDecode % (loadClass, addStr)
81 storeDecode = newDecode % (storeClass, addStr)
82 else:
83 newDecode = "return new %s(machInst, RD, RN, %s," + \
84 "machInst.shiftSize," + \
85 "machInst.shift, RM);"
86 loadClass = loadRegClassName(post, add, writeback,
87 size, False, user)
88 storeClass = storeRegClassName(post, add, writeback,
89 size, False, user)
90 loadDecode = newDecode % (loadClass, addStr)
91 storeDecode = newDecode % (storeClass, addStr)
92 decode = '''
93 case %#x:
94 {%s}
95 break;
96 '''
97 decode_block += decode % \
98 (buildPUBWLCase(p,u,b,w,1), loadDecode)
99 decode_block += decode % \
100 (buildPUBWLCase(p,u,b,w,0), storeDecode)
101 decode_block += '''
102 default:
103 return new Unknown(machInst);
104 break;
105 }'''
106}};
107
108def format AddrMode3() {{
109 decode = '''
110 {
111 const uint32_t op1 = bits(machInst, 24, 20);
112 const uint32_t op2 = bits(machInst, 6, 5);
113 const uint32_t puiw = bits(machInst, 24, 21);
114 const uint32_t imm = IMMED_HI_11_8 << 4 | IMMED_LO_3_0;
115 switch (op2) {
116 case 0x1:
117 if (op1 & 0x1) {
118 %(ldrh)s
119 } else {
120 %(strh)s
121 }
122 case 0x2:
123 if (op1 & 0x1) {
124 %(ldrsb)s
125 } else {
126 %(ldrd)s
127 }
128 case 0x3:
129 if (op1 & 0x1) {
130 %(ldrsh)s
131 } else {
132 %(strd)s
133 }
134 default:
135 return new Unknown(machInst);
136 }
137 }
138 '''
139
140 def decodePuiwCase(load, d, p, u, i, w, size=4, sign=False):
141 post = (p == 0)
142 user = (p == 0 and w == 1)
143 writeback = (p == 0 or w == 1)
144 add = (u == 1)
145 caseVal = (p << 3) + (u << 2) + (i << 1) + (w << 0)
146 decode = '''
147 case %#x:
148 return new '''% caseVal
149 if add:
150 addStr = "true"
151 else:
152 addStr = "false"
153 if i:
154 if load:
155 if d:
156 className = loadDoubleImmClassName(post, add, writeback)
157 else:
158 className = loadImmClassName(post, add, writeback, \
159 size=size, sign=sign, \
160 user=user)
161 else:
162 if d:
163 className = storeDoubleImmClassName(post, add, writeback)
164 else:
165 className = storeImmClassName(post, add, writeback, \
166 size=size, sign=sign, \
167 user=user)
168 decode += ("%s(machInst, RT, RN, %s, imm);\n" % \
169 (className, addStr))
170 else:
171 if load:
172 if d:
173 className = loadDoubleRegClassName(post, add, writeback)
174 else:
175 className = loadRegClassName(post, add, writeback, \
176 size=size, sign=sign, \
177 user=user)
178 else:
179 if d:
180 className = storeDoubleRegClassName(post, add, writeback)
181 else:
182 className = storeRegClassName(post, add, writeback, \
183 size=size, sign=sign, \
184 user=user)
185 decode += ("%s(machInst, RT, RN, %s, 0, LSL, RM);\n" % \
186 (className, addStr))
187 return decode
188
189 def decodePuiw(load, d, size=4, sign=False):
190 global decodePuiwCase
191 decode = "switch (puiw) {\n"
192 for p in (0, 1):
193 for u in (0, 1):
194 for i in (0, 1):
195 for w in (0, 1):
196 decode += decodePuiwCase(load, d, p, u, i, w,
197 size, sign)
198 decode += '''
199 default:
200 return new Unknown(machInst);
201 }
202 '''
203 return decode
204
205 subs = {
206 "ldrh" : decodePuiw(True, False, size=2),
207 "strh" : decodePuiw(False, False, size=2),
208 "ldrsb" : decodePuiw(True, False, size=1, sign=True),
209 "ldrd" : decodePuiw(True, True),
210 "ldrsh" : decodePuiw(True, False, size=2, sign=True),
211 "strd" : decodePuiw(False, True)
212 }
213 decode_block = decode % subs
214}};
215
216def format ArmSyncMem() {{
217 decode_block = '''
218 {
219 const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 19, 16);
220 const IntRegIndex rt = (IntRegIndex)(uint32_t)bits(machInst, 15, 12);
221 const IntRegIndex rt2 = (IntRegIndex)(uint32_t)bits(machInst, 3, 0);
222 switch (PUBWL) {
223 case 0x10:
224 return new Swp(machInst, rt, rt2, rn);
225 case 0x14:
226 return new Swpb(machInst, rt, rt2, rn);
227 case 0x18:
228 return new WarnUnimplemented("strex", machInst);
229 case 0x19:
230 return new WarnUnimplemented("ldrex", machInst);
231 default:
232 return new Unknown(machInst);
233 }
234 }
235 '''
236}};
237
| 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// Copyright (c) 2007-2008 The Florida State University
16// All rights reserved.
17//
18// Redistribution and use in source and binary forms, with or without
19// modification, are permitted provided that the following conditions are
20// met: redistributions of source code must retain the above copyright
21// notice, this list of conditions and the following disclaimer;
22// redistributions in binary form must reproduce the above copyright
23// notice, this list of conditions and the following disclaimer in the
24// documentation and/or other materials provided with the distribution;
25// neither the name of the copyright holders nor the names of its
26// contributors may be used to endorse or promote products derived from
27// this software without specific prior written permission.
28//
29// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40//
41// Authors: Gabe Black
42
43def format AddrMode2(imm) {{
44 if eval(imm):
45 imm = True
46 else:
47 imm = False
48
49 def buildPUBWLCase(p, u, b, w, l):
50 return (p << 4) + (u << 3) + (b << 2) + (w << 1) + (l << 0)
51
52 header_output = decoder_output = exec_output = ""
53 decode_block = "switch(PUBWL) {\n"
54
55 # Loop over all the values of p, u, b, w and l and build instructions and
56 # a decode block for them.
57 for p in (0, 1):
58 for u in (0, 1):
59 for b in (0, 1):
60 for w in (0, 1):
61 post = (p == 0)
62 user = (p == 0 and w == 1)
63 writeback = (p == 0 or w == 1)
64 add = (u == 1)
65 if b == 0:
66 size = 4
67 else:
68 size = 1
69 if add:
70 addStr = "true"
71 else:
72 addStr = "false"
73 if imm:
74 newDecode = "return new %s(machInst, RD, RN," + \
75 "%s, machInst.immed11_0);"
76 loadClass = loadImmClassName(post, add, writeback,
77 size, False, user)
78 storeClass = storeImmClassName(post, add, writeback,
79 size, False, user)
80 loadDecode = newDecode % (loadClass, addStr)
81 storeDecode = newDecode % (storeClass, addStr)
82 else:
83 newDecode = "return new %s(machInst, RD, RN, %s," + \
84 "machInst.shiftSize," + \
85 "machInst.shift, RM);"
86 loadClass = loadRegClassName(post, add, writeback,
87 size, False, user)
88 storeClass = storeRegClassName(post, add, writeback,
89 size, False, user)
90 loadDecode = newDecode % (loadClass, addStr)
91 storeDecode = newDecode % (storeClass, addStr)
92 decode = '''
93 case %#x:
94 {%s}
95 break;
96 '''
97 decode_block += decode % \
98 (buildPUBWLCase(p,u,b,w,1), loadDecode)
99 decode_block += decode % \
100 (buildPUBWLCase(p,u,b,w,0), storeDecode)
101 decode_block += '''
102 default:
103 return new Unknown(machInst);
104 break;
105 }'''
106}};
107
108def format AddrMode3() {{
109 decode = '''
110 {
111 const uint32_t op1 = bits(machInst, 24, 20);
112 const uint32_t op2 = bits(machInst, 6, 5);
113 const uint32_t puiw = bits(machInst, 24, 21);
114 const uint32_t imm = IMMED_HI_11_8 << 4 | IMMED_LO_3_0;
115 switch (op2) {
116 case 0x1:
117 if (op1 & 0x1) {
118 %(ldrh)s
119 } else {
120 %(strh)s
121 }
122 case 0x2:
123 if (op1 & 0x1) {
124 %(ldrsb)s
125 } else {
126 %(ldrd)s
127 }
128 case 0x3:
129 if (op1 & 0x1) {
130 %(ldrsh)s
131 } else {
132 %(strd)s
133 }
134 default:
135 return new Unknown(machInst);
136 }
137 }
138 '''
139
140 def decodePuiwCase(load, d, p, u, i, w, size=4, sign=False):
141 post = (p == 0)
142 user = (p == 0 and w == 1)
143 writeback = (p == 0 or w == 1)
144 add = (u == 1)
145 caseVal = (p << 3) + (u << 2) + (i << 1) + (w << 0)
146 decode = '''
147 case %#x:
148 return new '''% caseVal
149 if add:
150 addStr = "true"
151 else:
152 addStr = "false"
153 if i:
154 if load:
155 if d:
156 className = loadDoubleImmClassName(post, add, writeback)
157 else:
158 className = loadImmClassName(post, add, writeback, \
159 size=size, sign=sign, \
160 user=user)
161 else:
162 if d:
163 className = storeDoubleImmClassName(post, add, writeback)
164 else:
165 className = storeImmClassName(post, add, writeback, \
166 size=size, sign=sign, \
167 user=user)
168 decode += ("%s(machInst, RT, RN, %s, imm);\n" % \
169 (className, addStr))
170 else:
171 if load:
172 if d:
173 className = loadDoubleRegClassName(post, add, writeback)
174 else:
175 className = loadRegClassName(post, add, writeback, \
176 size=size, sign=sign, \
177 user=user)
178 else:
179 if d:
180 className = storeDoubleRegClassName(post, add, writeback)
181 else:
182 className = storeRegClassName(post, add, writeback, \
183 size=size, sign=sign, \
184 user=user)
185 decode += ("%s(machInst, RT, RN, %s, 0, LSL, RM);\n" % \
186 (className, addStr))
187 return decode
188
189 def decodePuiw(load, d, size=4, sign=False):
190 global decodePuiwCase
191 decode = "switch (puiw) {\n"
192 for p in (0, 1):
193 for u in (0, 1):
194 for i in (0, 1):
195 for w in (0, 1):
196 decode += decodePuiwCase(load, d, p, u, i, w,
197 size, sign)
198 decode += '''
199 default:
200 return new Unknown(machInst);
201 }
202 '''
203 return decode
204
205 subs = {
206 "ldrh" : decodePuiw(True, False, size=2),
207 "strh" : decodePuiw(False, False, size=2),
208 "ldrsb" : decodePuiw(True, False, size=1, sign=True),
209 "ldrd" : decodePuiw(True, True),
210 "ldrsh" : decodePuiw(True, False, size=2, sign=True),
211 "strd" : decodePuiw(False, True)
212 }
213 decode_block = decode % subs
214}};
215
216def format ArmSyncMem() {{
217 decode_block = '''
218 {
219 const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 19, 16);
220 const IntRegIndex rt = (IntRegIndex)(uint32_t)bits(machInst, 15, 12);
221 const IntRegIndex rt2 = (IntRegIndex)(uint32_t)bits(machInst, 3, 0);
222 switch (PUBWL) {
223 case 0x10:
224 return new Swp(machInst, rt, rt2, rn);
225 case 0x14:
226 return new Swpb(machInst, rt, rt2, rn);
227 case 0x18:
228 return new WarnUnimplemented("strex", machInst);
229 case 0x19:
230 return new WarnUnimplemented("ldrex", machInst);
231 default:
232 return new Unknown(machInst);
233 }
234 }
235 '''
236}};
237
|
238def format Thumb32LoadWord() {{
239 decode = '''
240 {
241 uint32_t op1 = bits(machInst, 24, 23);
242 if (bits(op1, 1) == 0) {
243 uint32_t op2 = bits(machInst, 11, 6);
244 if (HTRN == 0xF) {
245 if (UP) {
246 return new %(literal_u)s(machInst, RT, INTREG_PC,
247 true, IMMED_11_0);
248 } else {
249 return new %(literal)s(machInst, RT, INTREG_PC,
250 false, IMMED_11_0);
251 }
252 } else if (op1 == 0x1) {
253 return new %(imm_pu)s(machInst, RT, RN, true, IMMED_11_0);
254 } else if (op2 == 0) {
255 return new %(register)s(machInst, RT, RN, UP,
256 bits(machInst, 5, 4), LSL, RM);
257 } else if ((op2 & 0x3c) == 0x38) {
258 return new %(ldrt)s(machInst, RT, RN, true, IMMED_7_0);
259 } else if ((op2 & 0x3c) == 0x30 || //P
260 (op2 & 0x24) == 0x24) { //W
261 uint32_t puw = bits(machInst, 10, 8);
262 uint32_t imm = IMMED_7_0;
263 switch (puw) {
264 case 0:
265 case 2:
266 // If we're here, either P or W must have been set.
267 panic("Neither P or W set, but that "
268 "shouldn't be possible.\\n");
269 case 1:
270 return new %(imm_w)s(machInst, RT, RN, false, imm);
271 case 3:
272 return new %(imm_uw)s(machInst, RT, RN, true, imm);
273 case 4:
274 return new %(imm_p)s(machInst, RT, RN, false, imm);
275 case 5:
276 return new %(imm_pw)s(machInst, RT, RN, false, imm);
277 case 6:
278 return new %(imm_pu)s(machInst, RT, RN, true, imm);
279 case 7:
280 return new %(imm_puw)s(machInst, RT, RN, true, imm);
281 }
282 }
283 } else {
284 return new Unknown(machInst);
285 }
286 }
287 '''
288 classNames = {
289 "literal_u" : loadImmClassName(False, True, False),
290 "literal" : loadImmClassName(False, False, False),
291 "register" : loadRegClassName(False, True, False),
292 "ldrt" : loadImmClassName(False, True, False, user=True),
293 "imm_w" : loadImmClassName(True, False, True),
294 "imm_uw" : loadImmClassName(True, True, True),
295 "imm_p" : loadImmClassName(False, False, False),
296 "imm_pw" : loadImmClassName(False, False, True),
297 "imm_pu" : loadImmClassName(False, True, False),
298 "imm_puw" : loadImmClassName(False, True, True)
299 }
300 decode_block = decode % classNames
301}};
302
303def format Thumb32StoreSingle() {{
304 def buildPuwDecode(size):
305 puwDecode = '''
306 {
307 uint32_t puw = bits(machInst, 10, 8);
308 uint32_t imm = IMMED_7_0;
309 switch (puw) {
310 case 0:
311 case 2:
312 // If we're here, either P or W must have been set.
313 panic("Neither P or W set, but that "
314 "shouldn't be possible.\\n");
315 case 1:
316 return new %(imm_w)s(machInst, RT, RN, false, imm);
317 case 3:
318 return new %(imm_uw)s(machInst, RT, RN, true, imm);
319 case 4:
320 return new %(imm_p)s(machInst, RT, RN, false, imm);
321 case 5:
322 return new %(imm_pw)s(machInst, RT, RN, false, imm);
323 case 6:
324 return new %(imm_pu)s(machInst, RT, RN, true, imm);
325 case 7:
326 return new %(imm_puw)s(machInst, RT, RN, true, imm);
327 }
328 }
329 '''
330 return puwDecode % {
331 "imm_w" : storeImmClassName(True, False, True, size=size),
332 "imm_uw" : storeImmClassName(True, True, True, size=size),
333 "imm_p" : storeImmClassName(False, False, False, size=size),
334 "imm_pw" : storeImmClassName(False, False, True, size=size),
335 "imm_pu" : storeImmClassName(False, True, False, size=size),
336 "imm_puw" : storeImmClassName(False, True, True, size=size)
337 }
338 decode = '''
339 {
340 uint32_t op1 = bits(machInst, 23, 21);
341 uint32_t op2 = bits(machInst, 11, 6);
342 bool op2Puw = ((op2 & 0x24) == 0x24 ||
343 (op2 & 0x3c) == 0x30);
344 if (op1 == 4) {
345 return new %(strb_imm)s(machInst, RT, RN, true, IMMED_11_0);
346 } else if (op1 == 0 && op2Puw) {
347 %(strb_puw)s;
348 } else if (op1 == 0 && ((op2 & 0x3c) == 0x38)) {
349 return new %(strbt)s(machInst, RT, RN, true, IMMED_7_0);
350 } else if (op1 == 0 && op2 == 0) {
351 return new %(strb_reg)s(machInst, RT, RN, true,
352 bits(machInst, 5, 4), LSL, RM);
353 } else if (op1 == 5) {
354 return new %(strh_imm)s(machInst, RT, RN, true, IMMED_11_0);
355 } else if (op1 == 1 && op2Puw) {
356 %(strh_puw)s;
357 } else if (op1 == 1 && ((op2 & 0x3c) == 0x38)) {
358 return new %(strht)s(machInst, RT, RN, true, IMMED_7_0);
359 } else if (op1 == 1 && op2 == 0) {
360 return new %(strh_reg)s(machInst, RT, RN, true,
361 bits(machInst, 5, 4), LSL, RM);
362 } else if (op1 == 6) {
363 return new %(str_imm)s(machInst, RT, RN, true, IMMED_11_0);
364 } else if (op1 == 2 && op2Puw) {
365 %(str_puw)s;
366 } else if (op1 == 2 && ((op2 & 0x3c) == 0x38)) {
367 return new %(strt)s(machInst, RT, RN, true, IMMED_7_0);
368 } else if (op1 == 2 && op2 == 0) {
369 return new %(str_reg)s(machInst, RT, RN, true,
370 bits(machInst, 5, 4), LSL, RM);
371 } else {
372 return new Unknown(machInst);
373 }
374 }
375 '''
376 classNames = {
377 "strb_imm" : storeImmClassName(False, True, False, size=1),
378 "strb_puw" : buildPuwDecode(1),
379 "strbt" : storeImmClassName(False, True, False, user=True, size=1),
380 "strb_reg" : storeRegClassName(False, True, False, size=1),
381 "strh_imm" : storeImmClassName(False, True, False, size=2),
382 "strh_puw" : buildPuwDecode(2),
383 "strht" : storeImmClassName(False, True, False, user=True, size=2),
384 "strh_reg" : storeRegClassName(False, True, False, size=2),
385 "str_imm" : storeImmClassName(False, True, False),
386 "str_puw" : buildPuwDecode(4),
387 "strt" : storeImmClassName(False, True, False, user=True),
388 "str_reg" : storeRegClassName(False, True, False)
389 }
390 decode_block = decode % classNames
391}};
392
393def format Thumb16MemReg() {{
394 decode = '''
395 {
396 const uint32_t opb = bits(machInst, 11, 9);
397 const uint32_t rt = bits(machInst, 2, 0);
398 const uint32_t rn = bits(machInst, 5, 3);
399 const uint32_t rm = bits(machInst, 8, 6);
400 switch (opb) {
401 case 0x0:
402 return new %(str)s(machInst, rt, rn, true, 0, LSL, rm);
403 case 0x1:
404 return new %(strh)s(machInst, rt, rn, true, 0, LSL, rm);
405 case 0x2:
406 return new %(strb)s(machInst, rt, rn, true, 0, LSL, rm);
407 case 0x3:
408 return new %(ldrsb)s(machInst, rt, rn, true, 0, LSL, rm);
409 case 0x4:
410 return new %(ldr)s(machInst, rt, rn, true, 0, LSL, rm);
411 case 0x5:
412 return new %(ldrh)s(machInst, rt, rn, true, 0, LSL, rm);
413 case 0x6:
414 return new %(ldrb)s(machInst, rt, rn, true, 0, LSL, rm);
415 case 0x7:
416 return new %(ldrsh)s(machInst, rt, rn, true, 0, LSL, rm);
417 }
418 }
419 '''
420 classNames = {
421 "str" : storeRegClassName(False, True, False),
422 "strh" : storeRegClassName(False, True, False, size=2),
423 "strb" : storeRegClassName(False, True, False, size=1),
424 "ldrsb" : loadRegClassName(False, True, False, sign=True, size=1),
425 "ldr" : loadRegClassName(False, True, False),
426 "ldrh" : loadRegClassName(False, True, False, size=2),
427 "ldrb" : loadRegClassName(False, True, False, size=1),
428 "ldrsh" : loadRegClassName(False, True, False, sign=True, size=2),
429 }
430 decode_block = decode % classNames
431}};
432
433def format Thumb16MemImm() {{
434 decode = '''
435 {
436 const uint32_t opa = bits(machInst, 15, 12);
437 const uint32_t opb = bits(machInst, 11, 9);
438 const uint32_t lrt = bits(machInst, 2, 0);
439 const uint32_t lrn = bits(machInst, 5, 3);
440 const uint32_t hrt = bits(machInst, 10, 8);
441 const uint32_t imm5 = bits(machInst, 10, 6);
442 const uint32_t imm8 = bits(machInst, 7, 0);
443 const bool load = bits(opb, 2);
444 switch (opa) {
445 case 0x6:
446 if (load) {
447 return new %(ldr)s(machInst, lrt, lrn, true, imm5 << 2);
448 } else {
449 return new %(str)s(machInst, lrt, lrn, true, imm5 << 2);
450 }
451 case 0x7:
452 if (load) {
453 return new %(ldrb)s(machInst, lrt, lrn, true, imm5);
454 } else {
455 return new %(strb)s(machInst, lrt, lrn, true, imm5);
456 }
457 case 0x8:
458 if (load) {
459 return new %(ldrh)s(machInst, lrt, lrn, true, imm5 << 1);
460 } else {
461 return new %(strh)s(machInst, lrt, lrn, true, imm5 << 1);
462 }
463 case 0x9:
464 if (load) {
465 return new %(ldr)s(machInst, hrt, INTREG_SP, true, imm8 << 2);
466 } else {
467 return new %(str)s(machInst, hrt, INTREG_SP, true, imm8 << 2);
468 }
469 default:
470 return new Unknown(machInst);
471 }
472 }
473 '''
474 classNames = {
475 "ldr" : loadImmClassName(False, True, False),
476 "str" : storeImmClassName(False, True, False),
477 "ldrh" : loadImmClassName(False, True, False, size=2),
478 "strh" : storeImmClassName(False, True, False, size=2),
479 "ldrb" : loadImmClassName(False, True, False, size=1),
480 "strb" : storeImmClassName(False, True, False, size=1),
481 }
482 decode_block = decode % classNames
483}};
484
485def format Thumb16MemLit() {{
486 decode_block = '''
487 {
488 const uint32_t rt = bits(machInst, 10, 8);
489 const uint32_t imm8 = bits(machInst, 7, 0);
490 return new %s(machInst, rt, INTREG_PC, true, imm8 << 2);
491 }
492 ''' % loadImmClassName(False, True, False)
493}};
494
| 292def format Thumb32LoadWord() {{
293 decode = '''
294 {
295 uint32_t op1 = bits(machInst, 24, 23);
296 if (bits(op1, 1) == 0) {
297 uint32_t op2 = bits(machInst, 11, 6);
298 if (HTRN == 0xF) {
299 if (UP) {
300 return new %(literal_u)s(machInst, RT, INTREG_PC,
301 true, IMMED_11_0);
302 } else {
303 return new %(literal)s(machInst, RT, INTREG_PC,
304 false, IMMED_11_0);
305 }
306 } else if (op1 == 0x1) {
307 return new %(imm_pu)s(machInst, RT, RN, true, IMMED_11_0);
308 } else if (op2 == 0) {
309 return new %(register)s(machInst, RT, RN, UP,
310 bits(machInst, 5, 4), LSL, RM);
311 } else if ((op2 & 0x3c) == 0x38) {
312 return new %(ldrt)s(machInst, RT, RN, true, IMMED_7_0);
313 } else if ((op2 & 0x3c) == 0x30 || //P
314 (op2 & 0x24) == 0x24) { //W
315 uint32_t puw = bits(machInst, 10, 8);
316 uint32_t imm = IMMED_7_0;
317 switch (puw) {
318 case 0:
319 case 2:
320 // If we're here, either P or W must have been set.
321 panic("Neither P or W set, but that "
322 "shouldn't be possible.\\n");
323 case 1:
324 return new %(imm_w)s(machInst, RT, RN, false, imm);
325 case 3:
326 return new %(imm_uw)s(machInst, RT, RN, true, imm);
327 case 4:
328 return new %(imm_p)s(machInst, RT, RN, false, imm);
329 case 5:
330 return new %(imm_pw)s(machInst, RT, RN, false, imm);
331 case 6:
332 return new %(imm_pu)s(machInst, RT, RN, true, imm);
333 case 7:
334 return new %(imm_puw)s(machInst, RT, RN, true, imm);
335 }
336 }
337 } else {
338 return new Unknown(machInst);
339 }
340 }
341 '''
342 classNames = {
343 "literal_u" : loadImmClassName(False, True, False),
344 "literal" : loadImmClassName(False, False, False),
345 "register" : loadRegClassName(False, True, False),
346 "ldrt" : loadImmClassName(False, True, False, user=True),
347 "imm_w" : loadImmClassName(True, False, True),
348 "imm_uw" : loadImmClassName(True, True, True),
349 "imm_p" : loadImmClassName(False, False, False),
350 "imm_pw" : loadImmClassName(False, False, True),
351 "imm_pu" : loadImmClassName(False, True, False),
352 "imm_puw" : loadImmClassName(False, True, True)
353 }
354 decode_block = decode % classNames
355}};
356
357def format Thumb32StoreSingle() {{
358 def buildPuwDecode(size):
359 puwDecode = '''
360 {
361 uint32_t puw = bits(machInst, 10, 8);
362 uint32_t imm = IMMED_7_0;
363 switch (puw) {
364 case 0:
365 case 2:
366 // If we're here, either P or W must have been set.
367 panic("Neither P or W set, but that "
368 "shouldn't be possible.\\n");
369 case 1:
370 return new %(imm_w)s(machInst, RT, RN, false, imm);
371 case 3:
372 return new %(imm_uw)s(machInst, RT, RN, true, imm);
373 case 4:
374 return new %(imm_p)s(machInst, RT, RN, false, imm);
375 case 5:
376 return new %(imm_pw)s(machInst, RT, RN, false, imm);
377 case 6:
378 return new %(imm_pu)s(machInst, RT, RN, true, imm);
379 case 7:
380 return new %(imm_puw)s(machInst, RT, RN, true, imm);
381 }
382 }
383 '''
384 return puwDecode % {
385 "imm_w" : storeImmClassName(True, False, True, size=size),
386 "imm_uw" : storeImmClassName(True, True, True, size=size),
387 "imm_p" : storeImmClassName(False, False, False, size=size),
388 "imm_pw" : storeImmClassName(False, False, True, size=size),
389 "imm_pu" : storeImmClassName(False, True, False, size=size),
390 "imm_puw" : storeImmClassName(False, True, True, size=size)
391 }
392 decode = '''
393 {
394 uint32_t op1 = bits(machInst, 23, 21);
395 uint32_t op2 = bits(machInst, 11, 6);
396 bool op2Puw = ((op2 & 0x24) == 0x24 ||
397 (op2 & 0x3c) == 0x30);
398 if (op1 == 4) {
399 return new %(strb_imm)s(machInst, RT, RN, true, IMMED_11_0);
400 } else if (op1 == 0 && op2Puw) {
401 %(strb_puw)s;
402 } else if (op1 == 0 && ((op2 & 0x3c) == 0x38)) {
403 return new %(strbt)s(machInst, RT, RN, true, IMMED_7_0);
404 } else if (op1 == 0 && op2 == 0) {
405 return new %(strb_reg)s(machInst, RT, RN, true,
406 bits(machInst, 5, 4), LSL, RM);
407 } else if (op1 == 5) {
408 return new %(strh_imm)s(machInst, RT, RN, true, IMMED_11_0);
409 } else if (op1 == 1 && op2Puw) {
410 %(strh_puw)s;
411 } else if (op1 == 1 && ((op2 & 0x3c) == 0x38)) {
412 return new %(strht)s(machInst, RT, RN, true, IMMED_7_0);
413 } else if (op1 == 1 && op2 == 0) {
414 return new %(strh_reg)s(machInst, RT, RN, true,
415 bits(machInst, 5, 4), LSL, RM);
416 } else if (op1 == 6) {
417 return new %(str_imm)s(machInst, RT, RN, true, IMMED_11_0);
418 } else if (op1 == 2 && op2Puw) {
419 %(str_puw)s;
420 } else if (op1 == 2 && ((op2 & 0x3c) == 0x38)) {
421 return new %(strt)s(machInst, RT, RN, true, IMMED_7_0);
422 } else if (op1 == 2 && op2 == 0) {
423 return new %(str_reg)s(machInst, RT, RN, true,
424 bits(machInst, 5, 4), LSL, RM);
425 } else {
426 return new Unknown(machInst);
427 }
428 }
429 '''
430 classNames = {
431 "strb_imm" : storeImmClassName(False, True, False, size=1),
432 "strb_puw" : buildPuwDecode(1),
433 "strbt" : storeImmClassName(False, True, False, user=True, size=1),
434 "strb_reg" : storeRegClassName(False, True, False, size=1),
435 "strh_imm" : storeImmClassName(False, True, False, size=2),
436 "strh_puw" : buildPuwDecode(2),
437 "strht" : storeImmClassName(False, True, False, user=True, size=2),
438 "strh_reg" : storeRegClassName(False, True, False, size=2),
439 "str_imm" : storeImmClassName(False, True, False),
440 "str_puw" : buildPuwDecode(4),
441 "strt" : storeImmClassName(False, True, False, user=True),
442 "str_reg" : storeRegClassName(False, True, False)
443 }
444 decode_block = decode % classNames
445}};
446
447def format Thumb16MemReg() {{
448 decode = '''
449 {
450 const uint32_t opb = bits(machInst, 11, 9);
451 const uint32_t rt = bits(machInst, 2, 0);
452 const uint32_t rn = bits(machInst, 5, 3);
453 const uint32_t rm = bits(machInst, 8, 6);
454 switch (opb) {
455 case 0x0:
456 return new %(str)s(machInst, rt, rn, true, 0, LSL, rm);
457 case 0x1:
458 return new %(strh)s(machInst, rt, rn, true, 0, LSL, rm);
459 case 0x2:
460 return new %(strb)s(machInst, rt, rn, true, 0, LSL, rm);
461 case 0x3:
462 return new %(ldrsb)s(machInst, rt, rn, true, 0, LSL, rm);
463 case 0x4:
464 return new %(ldr)s(machInst, rt, rn, true, 0, LSL, rm);
465 case 0x5:
466 return new %(ldrh)s(machInst, rt, rn, true, 0, LSL, rm);
467 case 0x6:
468 return new %(ldrb)s(machInst, rt, rn, true, 0, LSL, rm);
469 case 0x7:
470 return new %(ldrsh)s(machInst, rt, rn, true, 0, LSL, rm);
471 }
472 }
473 '''
474 classNames = {
475 "str" : storeRegClassName(False, True, False),
476 "strh" : storeRegClassName(False, True, False, size=2),
477 "strb" : storeRegClassName(False, True, False, size=1),
478 "ldrsb" : loadRegClassName(False, True, False, sign=True, size=1),
479 "ldr" : loadRegClassName(False, True, False),
480 "ldrh" : loadRegClassName(False, True, False, size=2),
481 "ldrb" : loadRegClassName(False, True, False, size=1),
482 "ldrsh" : loadRegClassName(False, True, False, sign=True, size=2),
483 }
484 decode_block = decode % classNames
485}};
486
487def format Thumb16MemImm() {{
488 decode = '''
489 {
490 const uint32_t opa = bits(machInst, 15, 12);
491 const uint32_t opb = bits(machInst, 11, 9);
492 const uint32_t lrt = bits(machInst, 2, 0);
493 const uint32_t lrn = bits(machInst, 5, 3);
494 const uint32_t hrt = bits(machInst, 10, 8);
495 const uint32_t imm5 = bits(machInst, 10, 6);
496 const uint32_t imm8 = bits(machInst, 7, 0);
497 const bool load = bits(opb, 2);
498 switch (opa) {
499 case 0x6:
500 if (load) {
501 return new %(ldr)s(machInst, lrt, lrn, true, imm5 << 2);
502 } else {
503 return new %(str)s(machInst, lrt, lrn, true, imm5 << 2);
504 }
505 case 0x7:
506 if (load) {
507 return new %(ldrb)s(machInst, lrt, lrn, true, imm5);
508 } else {
509 return new %(strb)s(machInst, lrt, lrn, true, imm5);
510 }
511 case 0x8:
512 if (load) {
513 return new %(ldrh)s(machInst, lrt, lrn, true, imm5 << 1);
514 } else {
515 return new %(strh)s(machInst, lrt, lrn, true, imm5 << 1);
516 }
517 case 0x9:
518 if (load) {
519 return new %(ldr)s(machInst, hrt, INTREG_SP, true, imm8 << 2);
520 } else {
521 return new %(str)s(machInst, hrt, INTREG_SP, true, imm8 << 2);
522 }
523 default:
524 return new Unknown(machInst);
525 }
526 }
527 '''
528 classNames = {
529 "ldr" : loadImmClassName(False, True, False),
530 "str" : storeImmClassName(False, True, False),
531 "ldrh" : loadImmClassName(False, True, False, size=2),
532 "strh" : storeImmClassName(False, True, False, size=2),
533 "ldrb" : loadImmClassName(False, True, False, size=1),
534 "strb" : storeImmClassName(False, True, False, size=1),
535 }
536 decode_block = decode % classNames
537}};
538
539def format Thumb16MemLit() {{
540 decode_block = '''
541 {
542 const uint32_t rt = bits(machInst, 10, 8);
543 const uint32_t imm8 = bits(machInst, 7, 0);
544 return new %s(machInst, rt, INTREG_PC, true, imm8 << 2);
545 }
546 ''' % loadImmClassName(False, True, False)
547}};
548
|