remote_gdb.cc (12449:2260f4a68210) remote_gdb.cc (12455:c88f0b37f433)
1/*
2 * Copyright 2015 LabWare
3 * Copyright 2014 Google, Inc.
4 * Copyright (c) 2002-2005 The Regents of The University of Michigan
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met: redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer;
11 * redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution;
14 * neither the name of the copyright holders nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * Authors: Nathan Binkert
31 * Boris Shingarov
32 */
33
34/*
35 * Copyright (c) 1990, 1993 The Regents of the University of California
36 * All rights reserved
37 *
38 * This software was developed by the Computer Systems Engineering group
39 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
40 * contributed to Berkeley.
41 *
42 * All advertising materials mentioning features or use of this software
43 * must display the following acknowledgement:
44 * This product includes software developed by the University of
45 * California, Lawrence Berkeley Laboratories.
46 *
47 * Redistribution and use in source and binary forms, with or without
48 * modification, are permitted provided that the following conditions
49 * are met:
50 * 1. Redistributions of source code must retain the above copyright
51 * notice, this list of conditions and the following disclaimer.
52 * 2. Redistributions in binary form must reproduce the above copyright
53 * notice, this list of conditions and the following disclaimer in the
54 * documentation and/or other materials provided with the distribution.
55 * 3. All advertising materials mentioning features or use of this software
56 * must display the following acknowledgement:
57 * This product includes software developed by the University of
58 * California, Berkeley and its contributors.
59 * 4. Neither the name of the University nor the names of its contributors
60 * may be used to endorse or promote products derived from this software
61 * without specific prior written permission.
62 *
63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73 * SUCH DAMAGE.
74 *
75 * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
76 */
77
78/*-
79 * Copyright (c) 2001 The NetBSD Foundation, Inc.
80 * All rights reserved.
81 *
82 * This code is derived from software contributed to The NetBSD Foundation
83 * by Jason R. Thorpe.
84 *
85 * Redistribution and use in source and binary forms, with or without
86 * modification, are permitted provided that the following conditions
87 * are met:
88 * 1. Redistributions of source code must retain the above copyright
89 * notice, this list of conditions and the following disclaimer.
90 * 2. Redistributions in binary form must reproduce the above copyright
91 * notice, this list of conditions and the following disclaimer in the
92 * documentation and/or other materials provided with the distribution.
93 * 3. All advertising materials mentioning features or use of this software
94 * must display the following acknowledgement:
95 * This product includes software developed by the NetBSD
96 * Foundation, Inc. and its contributors.
97 * 4. Neither the name of The NetBSD Foundation nor the names of its
98 * contributors may be used to endorse or promote products derived
99 * from this software without specific prior written permission.
100 *
101 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
102 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
103 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
104 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
105 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
106 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
107 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
108 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
109 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
110 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
111 * POSSIBILITY OF SUCH DAMAGE.
112 */
113
114/*
115 * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
116 *
117 * Taken from NetBSD
118 *
119 * "Stub" to allow remote cpu to debug over a serial line using gdb.
120 */
121
122#include "arch/sparc/remote_gdb.hh"
123
124#include <sys/signal.h>
125#include <unistd.h>
126
127#include <csignal>
128#include <string>
129
130#include "arch/vtophys.hh"
131#include "base/intmath.hh"
132#include "base/remote_gdb.hh"
133#include "base/socket.hh"
134#include "base/trace.hh"
135#include "cpu/static_inst.hh"
136#include "cpu/thread_context.hh"
137#include "debug/GDBAcc.hh"
138#include "debug/GDBRead.hh"
139#include "mem/page_table.hh"
140#include "mem/physical.hh"
141#include "mem/port.hh"
142#include "sim/byteswap.hh"
143#include "sim/full_system.hh"
144#include "sim/process.hh"
145#include "sim/system.hh"
146
147using namespace std;
148using namespace SparcISA;
149
150RemoteGDB::RemoteGDB(System *_system, ThreadContext *c, int _port)
151 : BaseRemoteGDB(_system, c, _port), regCache32(this), regCache64(this)
152{}
153
154///////////////////////////////////////////////////////////
155// RemoteGDB::acc
156//
157// Determine if the mapping at va..(va+len) is valid.
158//
159bool
160RemoteGDB::acc(Addr va, size_t len)
161{
162 //@Todo In NetBSD, this function checks if all addresses
163 // from va to va + len have valid page map entries. Not
164 // sure how this will work for other OSes or in general.
165 if (FullSystem) {
1/*
2 * Copyright 2015 LabWare
3 * Copyright 2014 Google, Inc.
4 * Copyright (c) 2002-2005 The Regents of The University of Michigan
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met: redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer;
11 * redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution;
14 * neither the name of the copyright holders nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * Authors: Nathan Binkert
31 * Boris Shingarov
32 */
33
34/*
35 * Copyright (c) 1990, 1993 The Regents of the University of California
36 * All rights reserved
37 *
38 * This software was developed by the Computer Systems Engineering group
39 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
40 * contributed to Berkeley.
41 *
42 * All advertising materials mentioning features or use of this software
43 * must display the following acknowledgement:
44 * This product includes software developed by the University of
45 * California, Lawrence Berkeley Laboratories.
46 *
47 * Redistribution and use in source and binary forms, with or without
48 * modification, are permitted provided that the following conditions
49 * are met:
50 * 1. Redistributions of source code must retain the above copyright
51 * notice, this list of conditions and the following disclaimer.
52 * 2. Redistributions in binary form must reproduce the above copyright
53 * notice, this list of conditions and the following disclaimer in the
54 * documentation and/or other materials provided with the distribution.
55 * 3. All advertising materials mentioning features or use of this software
56 * must display the following acknowledgement:
57 * This product includes software developed by the University of
58 * California, Berkeley and its contributors.
59 * 4. Neither the name of the University nor the names of its contributors
60 * may be used to endorse or promote products derived from this software
61 * without specific prior written permission.
62 *
63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73 * SUCH DAMAGE.
74 *
75 * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
76 */
77
78/*-
79 * Copyright (c) 2001 The NetBSD Foundation, Inc.
80 * All rights reserved.
81 *
82 * This code is derived from software contributed to The NetBSD Foundation
83 * by Jason R. Thorpe.
84 *
85 * Redistribution and use in source and binary forms, with or without
86 * modification, are permitted provided that the following conditions
87 * are met:
88 * 1. Redistributions of source code must retain the above copyright
89 * notice, this list of conditions and the following disclaimer.
90 * 2. Redistributions in binary form must reproduce the above copyright
91 * notice, this list of conditions and the following disclaimer in the
92 * documentation and/or other materials provided with the distribution.
93 * 3. All advertising materials mentioning features or use of this software
94 * must display the following acknowledgement:
95 * This product includes software developed by the NetBSD
96 * Foundation, Inc. and its contributors.
97 * 4. Neither the name of The NetBSD Foundation nor the names of its
98 * contributors may be used to endorse or promote products derived
99 * from this software without specific prior written permission.
100 *
101 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
102 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
103 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
104 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
105 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
106 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
107 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
108 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
109 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
110 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
111 * POSSIBILITY OF SUCH DAMAGE.
112 */
113
114/*
115 * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
116 *
117 * Taken from NetBSD
118 *
119 * "Stub" to allow remote cpu to debug over a serial line using gdb.
120 */
121
122#include "arch/sparc/remote_gdb.hh"
123
124#include <sys/signal.h>
125#include <unistd.h>
126
127#include <csignal>
128#include <string>
129
130#include "arch/vtophys.hh"
131#include "base/intmath.hh"
132#include "base/remote_gdb.hh"
133#include "base/socket.hh"
134#include "base/trace.hh"
135#include "cpu/static_inst.hh"
136#include "cpu/thread_context.hh"
137#include "debug/GDBAcc.hh"
138#include "debug/GDBRead.hh"
139#include "mem/page_table.hh"
140#include "mem/physical.hh"
141#include "mem/port.hh"
142#include "sim/byteswap.hh"
143#include "sim/full_system.hh"
144#include "sim/process.hh"
145#include "sim/system.hh"
146
147using namespace std;
148using namespace SparcISA;
149
150RemoteGDB::RemoteGDB(System *_system, ThreadContext *c, int _port)
151 : BaseRemoteGDB(_system, c, _port), regCache32(this), regCache64(this)
152{}
153
154///////////////////////////////////////////////////////////
155// RemoteGDB::acc
156//
157// Determine if the mapping at va..(va+len) is valid.
158//
159bool
160RemoteGDB::acc(Addr va, size_t len)
161{
162 //@Todo In NetBSD, this function checks if all addresses
163 // from va to va + len have valid page map entries. Not
164 // sure how this will work for other OSes or in general.
165 if (FullSystem) {
166 if (va)
167 return true;
168 return false;
166 return va != 0;
169 } else {
167 } else {
170 TlbEntry entry;
171 // Check to make sure the first byte is mapped into the processes
172 // address space.
168 // Check to make sure the first byte is mapped into the processes
169 // address space.
173 if (context()->getProcessPtr()->pTable->lookup(va, entry))
174 return true;
175 return false;
170 return context()->getProcessPtr()->pTable->lookup(va) != nullptr;
176 }
177}
178
179void
180RemoteGDB::SPARCGdbRegCache::getRegs(ThreadContext *context)
181{
182 DPRINTF(GDBAcc, "getRegs in remotegdb \n");
183 for (int i = 0; i < 32; i++) r.gpr[i] = htobe((uint32_t)context->readIntReg(i));
184 PCState pc = context->pcState();
185 r.pc = htobe((uint32_t)pc.pc());
186 r.npc = htobe((uint32_t)pc.npc());
187 r.y = htobe((uint32_t)context->readIntReg(NumIntArchRegs + 1));
188 PSTATE pstate = context->readMiscReg(MISCREG_PSTATE);
189 r.psr = htobe((uint32_t)pstate);
190 r.fsr = htobe((uint32_t)context->readMiscReg(MISCREG_FSR));
191 r.csr = htobe((uint32_t)context->readIntReg(NumIntArchRegs + 2));
192}
193
194void
195RemoteGDB::SPARC64GdbRegCache::getRegs(ThreadContext *context)
196{
197 DPRINTF(GDBAcc, "getRegs in remotegdb \n");
198 for (int i = 0; i < 32; i++) r.gpr[i] = htobe(context->readIntReg(i));
199 for (int i = 0; i < 32; i++) r.fpr[i] = 0;
200 PCState pc = context->pcState();
201 r.pc = htobe(pc.pc());
202 r.npc = htobe(pc.npc());
203 r.fsr = htobe(context->readMiscReg(MISCREG_FSR));
204 r.fprs = htobe(context->readMiscReg(MISCREG_FPRS));
205 r.y = htobe(context->readIntReg(NumIntArchRegs + 1));
206 PSTATE pstate = context->readMiscReg(MISCREG_PSTATE);
207 r.state = htobe(
208 context->readMiscReg(MISCREG_CWP) |
209 pstate << 8 |
210 context->readMiscReg(MISCREG_ASI) << 24 |
211 context->readIntReg(NumIntArchRegs + 2) << 32);
212}
213
214void
215RemoteGDB::SPARCGdbRegCache::setRegs(ThreadContext *context) const
216{
217 for (int i = 0; i < 32; i++) context->setIntReg(i, r.gpr[i]);
218 PCState pc;
219 pc.pc(r.pc);
220 pc.npc(r.npc);
221 pc.nnpc(pc.npc() + sizeof(MachInst));
222 pc.upc(0);
223 pc.nupc(1);
224 context->pcState(pc);
225 // Floating point registers are left at 0 in netbsd
226 // All registers other than the pc, npc and int regs
227 // are ignored as well.
228}
229
230void
231RemoteGDB::SPARC64GdbRegCache::setRegs(ThreadContext *context) const
232{
233 for (int i = 0; i < 32; i++) context->setIntReg(i, r.gpr[i]);
234 PCState pc;
235 pc.pc(r.pc);
236 pc.npc(r.npc);
237 pc.nnpc(pc.npc() + sizeof(MachInst));
238 pc.upc(0);
239 pc.nupc(1);
240 context->pcState(pc);
241 // Floating point registers are left at 0 in netbsd
242 // All registers other than the pc, npc and int regs
243 // are ignored as well.
244}
245
246
247BaseGdbRegCache*
248RemoteGDB::gdbRegs()
249{
250 PSTATE pstate = context()->readMiscReg(MISCREG_PSTATE);
251 if (pstate.am) {
252 return &regCache32;
253 } else {
254 return &regCache64;
255 }
256}
171 }
172}
173
174void
175RemoteGDB::SPARCGdbRegCache::getRegs(ThreadContext *context)
176{
177 DPRINTF(GDBAcc, "getRegs in remotegdb \n");
178 for (int i = 0; i < 32; i++) r.gpr[i] = htobe((uint32_t)context->readIntReg(i));
179 PCState pc = context->pcState();
180 r.pc = htobe((uint32_t)pc.pc());
181 r.npc = htobe((uint32_t)pc.npc());
182 r.y = htobe((uint32_t)context->readIntReg(NumIntArchRegs + 1));
183 PSTATE pstate = context->readMiscReg(MISCREG_PSTATE);
184 r.psr = htobe((uint32_t)pstate);
185 r.fsr = htobe((uint32_t)context->readMiscReg(MISCREG_FSR));
186 r.csr = htobe((uint32_t)context->readIntReg(NumIntArchRegs + 2));
187}
188
189void
190RemoteGDB::SPARC64GdbRegCache::getRegs(ThreadContext *context)
191{
192 DPRINTF(GDBAcc, "getRegs in remotegdb \n");
193 for (int i = 0; i < 32; i++) r.gpr[i] = htobe(context->readIntReg(i));
194 for (int i = 0; i < 32; i++) r.fpr[i] = 0;
195 PCState pc = context->pcState();
196 r.pc = htobe(pc.pc());
197 r.npc = htobe(pc.npc());
198 r.fsr = htobe(context->readMiscReg(MISCREG_FSR));
199 r.fprs = htobe(context->readMiscReg(MISCREG_FPRS));
200 r.y = htobe(context->readIntReg(NumIntArchRegs + 1));
201 PSTATE pstate = context->readMiscReg(MISCREG_PSTATE);
202 r.state = htobe(
203 context->readMiscReg(MISCREG_CWP) |
204 pstate << 8 |
205 context->readMiscReg(MISCREG_ASI) << 24 |
206 context->readIntReg(NumIntArchRegs + 2) << 32);
207}
208
209void
210RemoteGDB::SPARCGdbRegCache::setRegs(ThreadContext *context) const
211{
212 for (int i = 0; i < 32; i++) context->setIntReg(i, r.gpr[i]);
213 PCState pc;
214 pc.pc(r.pc);
215 pc.npc(r.npc);
216 pc.nnpc(pc.npc() + sizeof(MachInst));
217 pc.upc(0);
218 pc.nupc(1);
219 context->pcState(pc);
220 // Floating point registers are left at 0 in netbsd
221 // All registers other than the pc, npc and int regs
222 // are ignored as well.
223}
224
225void
226RemoteGDB::SPARC64GdbRegCache::setRegs(ThreadContext *context) const
227{
228 for (int i = 0; i < 32; i++) context->setIntReg(i, r.gpr[i]);
229 PCState pc;
230 pc.pc(r.pc);
231 pc.npc(r.npc);
232 pc.nnpc(pc.npc() + sizeof(MachInst));
233 pc.upc(0);
234 pc.nupc(1);
235 context->pcState(pc);
236 // Floating point registers are left at 0 in netbsd
237 // All registers other than the pc, npc and int regs
238 // are ignored as well.
239}
240
241
242BaseGdbRegCache*
243RemoteGDB::gdbRegs()
244{
245 PSTATE pstate = context()->readMiscReg(MISCREG_PSTATE);
246 if (pstate.am) {
247 return &regCache32;
248 } else {
249 return &regCache64;
250 }
251}