intregs.hh revision 10337 
1/*
2 * Copyright (c) 2010-2014 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Copyright (c) 2009 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Gabe Black
41 */
42
43#include <cassert>
44
45#ifndef __ARCH_ARM_INTREGS_HH__
46#define __ARCH_ARM_INTREGS_HH__
47
48#include "arch/arm/types.hh"
49
50namespace ArmISA
51{
52
53enum IntRegIndex
54{
55    /* All the unique register indices. */
56    INTREG_R0,
57    INTREG_R1,
58    INTREG_R2,
59    INTREG_R3,
60    INTREG_R4,
61    INTREG_R5,
62    INTREG_R6,
63    INTREG_R7,
64    INTREG_R8,
65    INTREG_R9,
66    INTREG_R10,
67    INTREG_R11,
68    INTREG_R12,
69    INTREG_R13,
70    INTREG_SP = INTREG_R13,
71    INTREG_R14,
72    INTREG_LR = INTREG_R14,
73    INTREG_R15,
74    INTREG_PC = INTREG_R15,
75
76    INTREG_R13_SVC,
77    INTREG_SP_SVC = INTREG_R13_SVC,
78    INTREG_R14_SVC,
79    INTREG_LR_SVC = INTREG_R14_SVC,
80
81    INTREG_R13_MON,
82    INTREG_SP_MON = INTREG_R13_MON,
83    INTREG_R14_MON,
84    INTREG_LR_MON = INTREG_R14_MON,
85
86    INTREG_R13_HYP,
87    INTREG_SP_HYP = INTREG_R13_HYP,
88
89    INTREG_R13_ABT,
90    INTREG_SP_ABT = INTREG_R13_ABT,
91    INTREG_R14_ABT,
92    INTREG_LR_ABT = INTREG_R14_ABT,
93
94    INTREG_R13_UND,
95    INTREG_SP_UND = INTREG_R13_UND,
96    INTREG_R14_UND,
97    INTREG_LR_UND = INTREG_R14_UND,
98
99    INTREG_R13_IRQ,
100    INTREG_SP_IRQ = INTREG_R13_IRQ,
101    INTREG_R14_IRQ,
102    INTREG_LR_IRQ = INTREG_R14_IRQ,
103
104    INTREG_R8_FIQ,
105    INTREG_R9_FIQ,
106    INTREG_R10_FIQ,
107    INTREG_R11_FIQ,
108    INTREG_R12_FIQ,
109    INTREG_R13_FIQ,
110    INTREG_SP_FIQ = INTREG_R13_FIQ,
111    INTREG_R14_FIQ,
112    INTREG_LR_FIQ = INTREG_R14_FIQ,
113
114    INTREG_ZERO,
115    INTREG_UREG0,
116    INTREG_UREG1,
117    INTREG_UREG2,
118    INTREG_CONDCODES_NZ,
119    INTREG_CONDCODES_C,
120    INTREG_CONDCODES_V,
121    INTREG_CONDCODES_GE,
122    INTREG_FPCONDCODES,
123    INTREG_DUMMY, // Dummy reg used to throw away int reg results
124
125    INTREG_SP0,
126    INTREG_SP1,
127    INTREG_SP2,
128    INTREG_SP3,
129
130    NUM_INTREGS,
131    NUM_ARCH_INTREGS = 32,
132
133    /* AArch64 registers */
134    INTREG_X0 = 0,
135    INTREG_X1,
136    INTREG_X2,
137    INTREG_X3,
138    INTREG_X4,
139    INTREG_X5,
140    INTREG_X6,
141    INTREG_X7,
142    INTREG_X8,
143    INTREG_X9,
144    INTREG_X10,
145    INTREG_X11,
146    INTREG_X12,
147    INTREG_X13,
148    INTREG_X14,
149    INTREG_X15,
150    INTREG_X16,
151    INTREG_X17,
152    INTREG_X18,
153    INTREG_X19,
154    INTREG_X20,
155    INTREG_X21,
156    INTREG_X22,
157    INTREG_X23,
158    INTREG_X24,
159    INTREG_X25,
160    INTREG_X26,
161    INTREG_X27,
162    INTREG_X28,
163    INTREG_X29,
164    INTREG_X30,
165    INTREG_X31,
166
167    INTREG_SPX = NUM_INTREGS,
168
169    /* All the aliased indexes. */
170
171    /* USR mode */
172    INTREG_R0_USR = INTREG_R0,
173    INTREG_R1_USR = INTREG_R1,
174    INTREG_R2_USR = INTREG_R2,
175    INTREG_R3_USR = INTREG_R3,
176    INTREG_R4_USR = INTREG_R4,
177    INTREG_R5_USR = INTREG_R5,
178    INTREG_R6_USR = INTREG_R6,
179    INTREG_R7_USR = INTREG_R7,
180    INTREG_R8_USR = INTREG_R8,
181    INTREG_R9_USR = INTREG_R9,
182    INTREG_R10_USR = INTREG_R10,
183    INTREG_R11_USR = INTREG_R11,
184    INTREG_R12_USR = INTREG_R12,
185    INTREG_R13_USR = INTREG_R13,
186    INTREG_SP_USR = INTREG_SP,
187    INTREG_R14_USR = INTREG_R14,
188    INTREG_LR_USR = INTREG_LR,
189    INTREG_R15_USR = INTREG_R15,
190    INTREG_PC_USR = INTREG_PC,
191
192    /* SVC mode */
193    INTREG_R0_SVC = INTREG_R0,
194    INTREG_R1_SVC = INTREG_R1,
195    INTREG_R2_SVC = INTREG_R2,
196    INTREG_R3_SVC = INTREG_R3,
197    INTREG_R4_SVC = INTREG_R4,
198    INTREG_R5_SVC = INTREG_R5,
199    INTREG_R6_SVC = INTREG_R6,
200    INTREG_R7_SVC = INTREG_R7,
201    INTREG_R8_SVC = INTREG_R8,
202    INTREG_R9_SVC = INTREG_R9,
203    INTREG_R10_SVC = INTREG_R10,
204    INTREG_R11_SVC = INTREG_R11,
205    INTREG_R12_SVC = INTREG_R12,
206    INTREG_PC_SVC = INTREG_PC,
207    INTREG_R15_SVC = INTREG_R15,
208
209    /* MON mode */
210    INTREG_R0_MON = INTREG_R0,
211    INTREG_R1_MON = INTREG_R1,
212    INTREG_R2_MON = INTREG_R2,
213    INTREG_R3_MON = INTREG_R3,
214    INTREG_R4_MON = INTREG_R4,
215    INTREG_R5_MON = INTREG_R5,
216    INTREG_R6_MON = INTREG_R6,
217    INTREG_R7_MON = INTREG_R7,
218    INTREG_R8_MON = INTREG_R8,
219    INTREG_R9_MON = INTREG_R9,
220    INTREG_R10_MON = INTREG_R10,
221    INTREG_R11_MON = INTREG_R11,
222    INTREG_R12_MON = INTREG_R12,
223    INTREG_PC_MON = INTREG_PC,
224    INTREG_R15_MON = INTREG_R15,
225
226    /* ABT mode */
227    INTREG_R0_ABT = INTREG_R0,
228    INTREG_R1_ABT = INTREG_R1,
229    INTREG_R2_ABT = INTREG_R2,
230    INTREG_R3_ABT = INTREG_R3,
231    INTREG_R4_ABT = INTREG_R4,
232    INTREG_R5_ABT = INTREG_R5,
233    INTREG_R6_ABT = INTREG_R6,
234    INTREG_R7_ABT = INTREG_R7,
235    INTREG_R8_ABT = INTREG_R8,
236    INTREG_R9_ABT = INTREG_R9,
237    INTREG_R10_ABT = INTREG_R10,
238    INTREG_R11_ABT = INTREG_R11,
239    INTREG_R12_ABT = INTREG_R12,
240    INTREG_PC_ABT = INTREG_PC,
241    INTREG_R15_ABT = INTREG_R15,
242
243    /* HYP mode */
244    INTREG_R0_HYP = INTREG_R0,
245    INTREG_R1_HYP = INTREG_R1,
246    INTREG_R2_HYP = INTREG_R2,
247    INTREG_R3_HYP = INTREG_R3,
248    INTREG_R4_HYP = INTREG_R4,
249    INTREG_R5_HYP = INTREG_R5,
250    INTREG_R6_HYP = INTREG_R6,
251    INTREG_R7_HYP = INTREG_R7,
252    INTREG_R8_HYP = INTREG_R8,
253    INTREG_R9_HYP = INTREG_R9,
254    INTREG_R10_HYP = INTREG_R10,
255    INTREG_R11_HYP = INTREG_R11,
256    INTREG_R12_HYP = INTREG_R12,
257    INTREG_LR_HYP = INTREG_LR,
258    INTREG_R14_HYP = INTREG_R14,
259    INTREG_PC_HYP = INTREG_PC,
260    INTREG_R15_HYP = INTREG_R15,
261
262    /* UND mode */
263    INTREG_R0_UND = INTREG_R0,
264    INTREG_R1_UND = INTREG_R1,
265    INTREG_R2_UND = INTREG_R2,
266    INTREG_R3_UND = INTREG_R3,
267    INTREG_R4_UND = INTREG_R4,
268    INTREG_R5_UND = INTREG_R5,
269    INTREG_R6_UND = INTREG_R6,
270    INTREG_R7_UND = INTREG_R7,
271    INTREG_R8_UND = INTREG_R8,
272    INTREG_R9_UND = INTREG_R9,
273    INTREG_R10_UND = INTREG_R10,
274    INTREG_R11_UND = INTREG_R11,
275    INTREG_R12_UND = INTREG_R12,
276    INTREG_PC_UND = INTREG_PC,
277    INTREG_R15_UND = INTREG_R15,
278
279    /* IRQ mode */
280    INTREG_R0_IRQ = INTREG_R0,
281    INTREG_R1_IRQ = INTREG_R1,
282    INTREG_R2_IRQ = INTREG_R2,
283    INTREG_R3_IRQ = INTREG_R3,
284    INTREG_R4_IRQ = INTREG_R4,
285    INTREG_R5_IRQ = INTREG_R5,
286    INTREG_R6_IRQ = INTREG_R6,
287    INTREG_R7_IRQ = INTREG_R7,
288    INTREG_R8_IRQ = INTREG_R8,
289    INTREG_R9_IRQ = INTREG_R9,
290    INTREG_R10_IRQ = INTREG_R10,
291    INTREG_R11_IRQ = INTREG_R11,
292    INTREG_R12_IRQ = INTREG_R12,
293    INTREG_PC_IRQ = INTREG_PC,
294    INTREG_R15_IRQ = INTREG_R15,
295
296    /* FIQ mode */
297    INTREG_R0_FIQ = INTREG_R0,
298    INTREG_R1_FIQ = INTREG_R1,
299    INTREG_R2_FIQ = INTREG_R2,
300    INTREG_R3_FIQ = INTREG_R3,
301    INTREG_R4_FIQ = INTREG_R4,
302    INTREG_R5_FIQ = INTREG_R5,
303    INTREG_R6_FIQ = INTREG_R6,
304    INTREG_R7_FIQ = INTREG_R7,
305    INTREG_PC_FIQ = INTREG_PC,
306    INTREG_R15_FIQ = INTREG_R15
307};
308
309typedef IntRegIndex IntRegMap[NUM_ARCH_INTREGS];
310
311const IntRegMap IntReg64Map = {
312    INTREG_R0,      INTREG_R1,      INTREG_R2,      INTREG_R3,
313    INTREG_R4,      INTREG_R5,      INTREG_R6,      INTREG_R7,
314    INTREG_R8_USR,  INTREG_R9_USR,  INTREG_R10_USR, INTREG_R11_USR,
315    INTREG_R12_USR, INTREG_R13_USR, INTREG_R14_USR, INTREG_R13_HYP,
316    INTREG_R14_IRQ, INTREG_R13_IRQ, INTREG_R14_SVC, INTREG_R13_SVC,
317    INTREG_R14_ABT, INTREG_R13_ABT, INTREG_R14_UND, INTREG_R13_UND,
318    INTREG_R8_FIQ,  INTREG_R9_FIQ,  INTREG_R10_FIQ, INTREG_R11_FIQ,
319    INTREG_R12_FIQ, INTREG_R13_FIQ, INTREG_R14_FIQ, INTREG_ZERO
320};
321
322const IntRegMap IntRegUsrMap = {
323    INTREG_R0_USR,  INTREG_R1_USR,  INTREG_R2_USR,  INTREG_R3_USR,
324    INTREG_R4_USR,  INTREG_R5_USR,  INTREG_R6_USR,  INTREG_R7_USR,
325    INTREG_R8_USR,  INTREG_R9_USR,  INTREG_R10_USR, INTREG_R11_USR,
326    INTREG_R12_USR, INTREG_R13_USR, INTREG_R14_USR, INTREG_R15_USR,
327    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
328    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
329    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
330    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO
331};
332
333static inline IntRegIndex
334INTREG_USR(unsigned index)
335{
336    assert(index < NUM_ARCH_INTREGS);
337    return IntRegUsrMap[index];
338}
339
340const IntRegMap IntRegHypMap = {
341    INTREG_R0_HYP,  INTREG_R1_HYP,  INTREG_R2_HYP,  INTREG_R3_HYP,
342    INTREG_R4_HYP,  INTREG_R5_HYP,  INTREG_R6_HYP,  INTREG_R7_HYP,
343    INTREG_R8_HYP,  INTREG_R9_HYP,  INTREG_R10_HYP, INTREG_R11_HYP,
344    INTREG_R12_HYP, INTREG_R13_HYP, INTREG_R14_HYP, INTREG_R15_HYP,
345    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
346    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
347    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
348    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO
349};
350
351static inline IntRegIndex
352INTREG_HYP(unsigned index)
353{
354    assert(index < NUM_ARCH_INTREGS);
355    return IntRegHypMap[index];
356}
357
358const IntRegMap IntRegSvcMap = {
359    INTREG_R0_SVC,  INTREG_R1_SVC,  INTREG_R2_SVC,  INTREG_R3_SVC,
360    INTREG_R4_SVC,  INTREG_R5_SVC,  INTREG_R6_SVC,  INTREG_R7_SVC,
361    INTREG_R8_SVC,  INTREG_R9_SVC,  INTREG_R10_SVC, INTREG_R11_SVC,
362    INTREG_R12_SVC, INTREG_R13_SVC, INTREG_R14_SVC, INTREG_R15_SVC,
363    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
364    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
365    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
366    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO
367};
368
369static inline IntRegIndex
370INTREG_SVC(unsigned index)
371{
372    assert(index < NUM_ARCH_INTREGS);
373    return IntRegSvcMap[index];
374}
375
376const IntRegMap IntRegMonMap = {
377    INTREG_R0_MON,  INTREG_R1_MON,  INTREG_R2_MON,  INTREG_R3_MON,
378    INTREG_R4_MON,  INTREG_R5_MON,  INTREG_R6_MON,  INTREG_R7_MON,
379    INTREG_R8_MON,  INTREG_R9_MON,  INTREG_R10_MON, INTREG_R11_MON,
380    INTREG_R12_MON, INTREG_R13_MON, INTREG_R14_MON, INTREG_R15_MON,
381    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
382    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
383    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
384    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO
385};
386
387static inline IntRegIndex
388INTREG_MON(unsigned index)
389{
390    assert(index < NUM_ARCH_INTREGS);
391    return IntRegMonMap[index];
392}
393
394const IntRegMap IntRegAbtMap = {
395    INTREG_R0_ABT,  INTREG_R1_ABT,  INTREG_R2_ABT,  INTREG_R3_ABT,
396    INTREG_R4_ABT,  INTREG_R5_ABT,  INTREG_R6_ABT,  INTREG_R7_ABT,
397    INTREG_R8_ABT,  INTREG_R9_ABT,  INTREG_R10_ABT, INTREG_R11_ABT,
398    INTREG_R12_ABT, INTREG_R13_ABT, INTREG_R14_ABT, INTREG_R15_ABT,
399    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
400    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
401    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
402    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO
403};
404
405static inline IntRegIndex
406INTREG_ABT(unsigned index)
407{
408    assert(index < NUM_ARCH_INTREGS);
409    return IntRegAbtMap[index];
410}
411
412const IntRegMap IntRegUndMap = {
413    INTREG_R0_UND,  INTREG_R1_UND,  INTREG_R2_UND,  INTREG_R3_UND,
414    INTREG_R4_UND,  INTREG_R5_UND,  INTREG_R6_UND,  INTREG_R7_UND,
415    INTREG_R8_UND,  INTREG_R9_UND,  INTREG_R10_UND, INTREG_R11_UND,
416    INTREG_R12_UND, INTREG_R13_UND, INTREG_R14_UND, INTREG_R15_UND,
417    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
418    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
419    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
420    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO
421};
422
423static inline IntRegIndex
424INTREG_UND(unsigned index)
425{
426    assert(index < NUM_ARCH_INTREGS);
427    return IntRegUndMap[index];
428}
429
430const IntRegMap IntRegIrqMap = {
431    INTREG_R0_IRQ,  INTREG_R1_IRQ,  INTREG_R2_IRQ,  INTREG_R3_IRQ,
432    INTREG_R4_IRQ,  INTREG_R5_IRQ,  INTREG_R6_IRQ,  INTREG_R7_IRQ,
433    INTREG_R8_IRQ,  INTREG_R9_IRQ,  INTREG_R10_IRQ, INTREG_R11_IRQ,
434    INTREG_R12_IRQ, INTREG_R13_IRQ, INTREG_R14_IRQ, INTREG_R15_IRQ,
435    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
436    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
437    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
438    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO
439};
440
441static inline IntRegIndex
442INTREG_IRQ(unsigned index)
443{
444    assert(index < NUM_ARCH_INTREGS);
445    return IntRegIrqMap[index];
446}
447
448const IntRegMap IntRegFiqMap = {
449    INTREG_R0_FIQ,  INTREG_R1_FIQ,  INTREG_R2_FIQ,  INTREG_R3_FIQ,
450    INTREG_R4_FIQ,  INTREG_R5_FIQ,  INTREG_R6_FIQ,  INTREG_R7_FIQ,
451    INTREG_R8_FIQ,  INTREG_R9_FIQ,  INTREG_R10_FIQ, INTREG_R11_FIQ,
452    INTREG_R12_FIQ, INTREG_R13_FIQ, INTREG_R14_FIQ, INTREG_R15_FIQ,
453    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
454    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
455    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,
456    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO,    INTREG_ZERO
457};
458
459static inline IntRegIndex
460INTREG_FIQ(unsigned index)
461{
462    assert(index < NUM_ARCH_INTREGS);
463    return IntRegFiqMap[index];
464}
465
466static const unsigned intRegsPerMode = NUM_INTREGS;
467
468static inline int
469intRegInMode(OperatingMode mode, int reg)
470{
471    assert(reg < NUM_ARCH_INTREGS);
472    return mode * intRegsPerMode + reg;
473}
474
475static inline int
476flattenIntRegModeIndex(int reg)
477{
478    int mode = reg / intRegsPerMode;
479    reg = reg % intRegsPerMode;
480    switch (mode) {
481      case MODE_USER:
482      case MODE_SYSTEM:
483        return INTREG_USR(reg);
484      case MODE_FIQ:
485        return INTREG_FIQ(reg);
486      case MODE_IRQ:
487        return INTREG_IRQ(reg);
488      case MODE_SVC:
489        return INTREG_SVC(reg);
490      case MODE_MON:
491        return INTREG_MON(reg);
492      case MODE_ABORT:
493        return INTREG_ABT(reg);
494      case MODE_HYP:
495        return INTREG_HYP(reg);
496      case MODE_UNDEFINED:
497        return INTREG_UND(reg);
498      default:
499        panic("%d: Flattening into an unknown mode: reg:%#x mode:%#x\n",
500                curTick(), reg, mode);
501    }
502}
503
504
505static inline IntRegIndex
506makeSP(IntRegIndex reg)
507{
508    if (reg == INTREG_X31)
509        reg = INTREG_SPX;
510    return reg;
511}
512
513static inline IntRegIndex
514makeZero(IntRegIndex reg)
515{
516    if (reg == INTREG_X31)
517        reg = INTREG_ZERO;
518    return reg;
519}
520
521static inline bool
522isSP(IntRegIndex reg)
523{
524    return reg == INTREG_SPX;
525}
526
527}
528
529#endif
530