1/*
2 * Copyright 2014 Google, Inc.
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) 2002-2005 The Regents of The University of Michigan
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: Nathan Binkert
42 * William Wang
43 * Deyuan Guo
44 * Boris Shingarov
45 */
46
47/*
48 * Copyright (c) 1990, 1993 The Regents of the University of California
49 * All rights reserved
50 *
51 * This software was developed by the Computer Systems Engineering group
52 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
53 * contributed to Berkeley.
54 *
55 * 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, Lawrence Berkeley Laboratories.
59 *
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
62 * are met:
63 * 1. Redistributions of source code must retain the above copyright
64 * notice, this list of conditions and the following disclaimer.
65 * 2. Redistributions in binary form must reproduce the above copyright
66 * notice, this list of conditions and the following disclaimer in the
67 * documentation and/or other materials provided with the distribution.
68 * 3. All advertising materials mentioning features or use of this software
69 * must display the following acknowledgement:
70 * This product includes software developed by the University of
71 * California, Berkeley and its contributors.
72 * 4. Neither the name of the University nor the names of its contributors
73 * may be used to endorse or promote products derived from this software
74 * without specific prior written permission.
75 *
76 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
77 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
78 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
79 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
80 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
81 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
82 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
83 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
84 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
85 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
86 * SUCH DAMAGE.
87 *
88 * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
89 */
90
91/*-
92 * Copyright (c) 2001 The NetBSD Foundation, Inc.
93 * All rights reserved.
94 *
95 * This code is derived from software contributed to The NetBSD Foundation
96 * by Jason R. Thorpe.
97 *
98 * Redistribution and use in source and binary forms, with or without
99 * modification, are permitted provided that the following conditions
100 * are met:
101 * 1. Redistributions of source code must retain the above copyright
102 * notice, this list of conditions and the following disclaimer.
103 * 2. Redistributions in binary form must reproduce the above copyright
104 * notice, this list of conditions and the following disclaimer in the
105 * documentation and/or other materials provided with the distribution.
106 * 3. All advertising materials mentioning features or use of this software
107 * must display the following acknowledgement:
108 * This product includes software developed by the NetBSD
109 * Foundation, Inc. and its contributors.
110 * 4. Neither the name of The NetBSD Foundation nor the names of its
111 * contributors may be used to endorse or promote products derived
112 * from this software without specific prior written permission.
113 *
114 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
115 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
116 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
117 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
118 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
119 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
120 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
121 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
122 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
123 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
124 * POSSIBILITY OF SUCH DAMAGE.
125 */
126
127/*
128 * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
129 *
130 * Taken from NetBSD
131 *
132 * "Stub" to allow remote cpu to debug over a serial line using gdb.
133 */
134
135#include "arch/power/remote_gdb.hh"
136
137#include <sys/signal.h>
138#include <unistd.h>
139
140#include <string>
141
142#include "arch/power/vtophys.hh"
143#include "cpu/thread_state.hh"
144#include "debug/GDBAcc.hh"
145#include "debug/GDBMisc.hh"
146#include "sim/byteswap.hh"
147
148using namespace std;
149using namespace PowerISA;
150
151RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc)
152 : BaseRemoteGDB(_system, tc, GDB_REG_BYTES)
153{
154}
155
156/*
157 * Determine if the mapping at va..(va+len) is valid.
158 */
159bool
160RemoteGDB::acc(Addr va, size_t len)
161{
162 TlbEntry entry;
163 //Check to make sure the first byte is mapped into the processes address
164 //space. At the time of this writing, the acc() check is used when
165 //processing the MemR/MemW packets before actually asking the translating
166 //port proxy to read/writeBlob. I (bgs) am not convinced the first byte
167 //check is enough.
168 if (FullSystem)
169 panic("acc not implemented for POWER FS!");
170 else
171 return context->getProcessPtr()->pTable->lookup(va, entry);
172}
173
174/*
175 * Translate the kernel debugger register format into the GDB register
176 * format.
177 *
178 * The PowerPC ISA is quite flexible in what register sets may be present
179 * depending on the features implemented by the particular CPU;
180 * GDB addresses this by describing the format of how register contents
181 * are transferred on the wire, in XML files such as 'power-core.xml'.
182 * Ideally, we should be reading these files instead of hardcoding this
183 * information, but for now the following implementation is enough to
184 * serve as the RSP backend for the out-of-the-box, default GDB.
185 */
186void
187RemoteGDB::getregs()
188{
189 DPRINTF(GDBAcc, "getregs in remotegdb \n");
190 memset(gdbregs.regs, 0, gdbregs.bytes());
191
192 // Default order on 32-bit PowerPC:
193 // R0-R31 (32-bit each), F0-F31 (64-bit IEEE754 double),
194 // PC, MSR, CR, LR, CTR, XER (32-bit each)
195
196 // INTREG: R0~R31
197 for (int i = 0; i < NumIntArchRegs; i++)
198 gdbregs.regs32[GdbFirstGPRIndex + i] = htobe((uint32_t)context->readIntReg(i));
199
200 // FLOATREG: F0~F31
201 for (int i = 0; i < NumFloatArchRegs; i++)
202 gdbregs.regs32[GdbFirstFPRIndex + i] = context->readFloatRegBits(i);
203
204 // PC, MSR, CR, LR, CTR, XER
205 gdbregs.regs32[GdbPCIndex] = htobe((uint32_t)context->pcState().pc());
206 gdbregs.regs32[GdbMSRIndex] = 0; // Is MSR modeled?
207 gdbregs.regs32[GdbCRIndex] = htobe((uint32_t)context->readIntReg(INTREG_CR));
208 gdbregs.regs32[GdbLRIndex] = htobe((uint32_t)context->readIntReg(INTREG_LR));
209 gdbregs.regs32[GdbCTRIndex] = htobe((uint32_t)context->readIntReg(INTREG_CTR));
210 gdbregs.regs32[GdbXERIndex] = htobe((uint32_t)context->readIntReg(INTREG_XER));
211}
212
213/*
214 * Translate the GDB register format into the kernel debugger register
215 * format.
216 */
217void
218RemoteGDB::setregs()
219{
220 DPRINTF(GDBAcc, "setregs in remotegdb \n");
221
222 // INTREG: R0~R31
223 for (int i = 0; i < NumIntArchRegs; i++)
224 context->setIntReg(i, betoh(gdbregs.regs32[GdbFirstGPRIndex + i]));
225
226 // FLOATREG: F0~F31
227 for (int i = 0; i < NumFloatArchRegs; i++)
228 context->setFloatRegBits(i, gdbregs.regs64[GdbFirstFPRIndex + i]);
229
230 // PC, MSR, CR, LR, CTR, XER
231 context->pcState(betoh(gdbregs.regs32[GdbPCIndex]));
232 // Is MSR modeled?
233 context->setIntReg(INTREG_CR, betoh(gdbregs.regs32[GdbCRIndex]));
234 context->setIntReg(INTREG_LR, betoh(gdbregs.regs32[GdbLRIndex]));
235 context->setIntReg(INTREG_CTR, betoh(gdbregs.regs32[GdbCTRIndex]));
236 context->setIntReg(INTREG_XER, betoh(gdbregs.regs32[GdbXERIndex]));
237}
2 * Copyright 2014 Google, Inc.
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) 2002-2005 The Regents of The University of Michigan
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: Nathan Binkert
42 * William Wang
43 * Deyuan Guo
44 * Boris Shingarov
45 */
46
47/*
48 * Copyright (c) 1990, 1993 The Regents of the University of California
49 * All rights reserved
50 *
51 * This software was developed by the Computer Systems Engineering group
52 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
53 * contributed to Berkeley.
54 *
55 * 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, Lawrence Berkeley Laboratories.
59 *
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
62 * are met:
63 * 1. Redistributions of source code must retain the above copyright
64 * notice, this list of conditions and the following disclaimer.
65 * 2. Redistributions in binary form must reproduce the above copyright
66 * notice, this list of conditions and the following disclaimer in the
67 * documentation and/or other materials provided with the distribution.
68 * 3. All advertising materials mentioning features or use of this software
69 * must display the following acknowledgement:
70 * This product includes software developed by the University of
71 * California, Berkeley and its contributors.
72 * 4. Neither the name of the University nor the names of its contributors
73 * may be used to endorse or promote products derived from this software
74 * without specific prior written permission.
75 *
76 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
77 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
78 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
79 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
80 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
81 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
82 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
83 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
84 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
85 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
86 * SUCH DAMAGE.
87 *
88 * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
89 */
90
91/*-
92 * Copyright (c) 2001 The NetBSD Foundation, Inc.
93 * All rights reserved.
94 *
95 * This code is derived from software contributed to The NetBSD Foundation
96 * by Jason R. Thorpe.
97 *
98 * Redistribution and use in source and binary forms, with or without
99 * modification, are permitted provided that the following conditions
100 * are met:
101 * 1. Redistributions of source code must retain the above copyright
102 * notice, this list of conditions and the following disclaimer.
103 * 2. Redistributions in binary form must reproduce the above copyright
104 * notice, this list of conditions and the following disclaimer in the
105 * documentation and/or other materials provided with the distribution.
106 * 3. All advertising materials mentioning features or use of this software
107 * must display the following acknowledgement:
108 * This product includes software developed by the NetBSD
109 * Foundation, Inc. and its contributors.
110 * 4. Neither the name of The NetBSD Foundation nor the names of its
111 * contributors may be used to endorse or promote products derived
112 * from this software without specific prior written permission.
113 *
114 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
115 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
116 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
117 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
118 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
119 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
120 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
121 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
122 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
123 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
124 * POSSIBILITY OF SUCH DAMAGE.
125 */
126
127/*
128 * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
129 *
130 * Taken from NetBSD
131 *
132 * "Stub" to allow remote cpu to debug over a serial line using gdb.
133 */
134
135#include "arch/power/remote_gdb.hh"
136
137#include <sys/signal.h>
138#include <unistd.h>
139
140#include <string>
141
142#include "arch/power/vtophys.hh"
143#include "cpu/thread_state.hh"
144#include "debug/GDBAcc.hh"
145#include "debug/GDBMisc.hh"
146#include "sim/byteswap.hh"
147
148using namespace std;
149using namespace PowerISA;
150
151RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc)
152 : BaseRemoteGDB(_system, tc, GDB_REG_BYTES)
153{
154}
155
156/*
157 * Determine if the mapping at va..(va+len) is valid.
158 */
159bool
160RemoteGDB::acc(Addr va, size_t len)
161{
162 TlbEntry entry;
163 //Check to make sure the first byte is mapped into the processes address
164 //space. At the time of this writing, the acc() check is used when
165 //processing the MemR/MemW packets before actually asking the translating
166 //port proxy to read/writeBlob. I (bgs) am not convinced the first byte
167 //check is enough.
168 if (FullSystem)
169 panic("acc not implemented for POWER FS!");
170 else
171 return context->getProcessPtr()->pTable->lookup(va, entry);
172}
173
174/*
175 * Translate the kernel debugger register format into the GDB register
176 * format.
177 *
178 * The PowerPC ISA is quite flexible in what register sets may be present
179 * depending on the features implemented by the particular CPU;
180 * GDB addresses this by describing the format of how register contents
181 * are transferred on the wire, in XML files such as 'power-core.xml'.
182 * Ideally, we should be reading these files instead of hardcoding this
183 * information, but for now the following implementation is enough to
184 * serve as the RSP backend for the out-of-the-box, default GDB.
185 */
186void
187RemoteGDB::getregs()
188{
189 DPRINTF(GDBAcc, "getregs in remotegdb \n");
190 memset(gdbregs.regs, 0, gdbregs.bytes());
191
192 // Default order on 32-bit PowerPC:
193 // R0-R31 (32-bit each), F0-F31 (64-bit IEEE754 double),
194 // PC, MSR, CR, LR, CTR, XER (32-bit each)
195
196 // INTREG: R0~R31
197 for (int i = 0; i < NumIntArchRegs; i++)
198 gdbregs.regs32[GdbFirstGPRIndex + i] = htobe((uint32_t)context->readIntReg(i));
199
200 // FLOATREG: F0~F31
201 for (int i = 0; i < NumFloatArchRegs; i++)
202 gdbregs.regs32[GdbFirstFPRIndex + i] = context->readFloatRegBits(i);
203
204 // PC, MSR, CR, LR, CTR, XER
205 gdbregs.regs32[GdbPCIndex] = htobe((uint32_t)context->pcState().pc());
206 gdbregs.regs32[GdbMSRIndex] = 0; // Is MSR modeled?
207 gdbregs.regs32[GdbCRIndex] = htobe((uint32_t)context->readIntReg(INTREG_CR));
208 gdbregs.regs32[GdbLRIndex] = htobe((uint32_t)context->readIntReg(INTREG_LR));
209 gdbregs.regs32[GdbCTRIndex] = htobe((uint32_t)context->readIntReg(INTREG_CTR));
210 gdbregs.regs32[GdbXERIndex] = htobe((uint32_t)context->readIntReg(INTREG_XER));
211}
212
213/*
214 * Translate the GDB register format into the kernel debugger register
215 * format.
216 */
217void
218RemoteGDB::setregs()
219{
220 DPRINTF(GDBAcc, "setregs in remotegdb \n");
221
222 // INTREG: R0~R31
223 for (int i = 0; i < NumIntArchRegs; i++)
224 context->setIntReg(i, betoh(gdbregs.regs32[GdbFirstGPRIndex + i]));
225
226 // FLOATREG: F0~F31
227 for (int i = 0; i < NumFloatArchRegs; i++)
228 context->setFloatRegBits(i, gdbregs.regs64[GdbFirstFPRIndex + i]);
229
230 // PC, MSR, CR, LR, CTR, XER
231 context->pcState(betoh(gdbregs.regs32[GdbPCIndex]));
232 // Is MSR modeled?
233 context->setIntReg(INTREG_CR, betoh(gdbregs.regs32[GdbCRIndex]));
234 context->setIntReg(INTREG_LR, betoh(gdbregs.regs32[GdbLRIndex]));
235 context->setIntReg(INTREG_CTR, betoh(gdbregs.regs32[GdbCTRIndex]));
236 context->setIntReg(INTREG_XER, betoh(gdbregs.regs32[GdbXERIndex]));
237}