2 * Copyright 2014 Google, Inc.
3 * Copyright (c) 2002-2005 The Regents of The University of Michigan
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * Authors: Nathan Binkert
33 * Copyright (c) 1990, 1993 The Regents of the University of California
36 * This software was developed by the Computer Systems Engineering group
37 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
38 * contributed to Berkeley.
40 * All advertising materials mentioning features or use of this software
41 * must display the following acknowledgement:
42 * This product includes software developed by the University of
43 * California, Lawrence Berkeley Laboratories.
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * 3. All advertising materials mentioning features or use of this software
54 * must display the following acknowledgement:
55 * This product includes software developed by the University of
56 * California, Berkeley and its contributors.
57 * 4. Neither the name of the University nor the names of its contributors
58 * may be used to endorse or promote products derived from this software
59 * without specific prior written permission.
61 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
62 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
63 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
64 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
65 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
66 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
67 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
68 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
69 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
70 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73 * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
77 * Copyright (c) 2001 The NetBSD Foundation, Inc.
78 * All rights reserved.
80 * This code is derived from software contributed to The NetBSD Foundation
83 * Redistribution and use in source and binary forms, with or without
84 * modification, are permitted provided that the following conditions
86 * 1. Redistributions of source code must retain the above copyright
87 * notice, this list of conditions and the following disclaimer.
88 * 2. Redistributions in binary form must reproduce the above copyright
89 * notice, this list of conditions and the following disclaimer in the
90 * documentation and/or other materials provided with the distribution.
91 * 3. All advertising materials mentioning features or use of this software
92 * must display the following acknowledgement:
93 * This product includes software developed by the NetBSD
94 * Foundation, Inc. and its contributors.
95 * 4. Neither the name of The NetBSD Foundation nor the names of its
96 * contributors may be used to endorse or promote products derived
97 * from this software without specific prior written permission.
99 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
100 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
101 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
102 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
103 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
104 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
105 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
106 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
107 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
108 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
109 * POSSIBILITY OF SUCH DAMAGE.
113 * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
117 * "Stub" to allow remote cpu to debug over a serial line using gdb.
121 #include <sys/signal.h>
126 #include "arch/sparc/remote_gdb.hh"
127 #include "arch/vtophys.hh"
128 #include "base/intmath.hh"
129 #include "base/remote_gdb.hh"
130 #include "base/socket.hh"
131 #include "base/trace.hh"
132 #include "cpu/static_inst.hh"
133 #include "cpu/thread_context.hh"
134 #include "debug/GDBRead.hh"
135 #include "mem/page_table.hh"
136 #include "mem/physical.hh"
137 #include "mem/port.hh"
138 #include "sim/byteswap.hh"
139 #include "sim/full_system.hh"
140 #include "sim/process.hh"
141 #include "sim/system.hh"
144 using namespace SparcISA
;
146 RemoteGDB::RemoteGDB(System
*_system
, ThreadContext
*c
)
147 : BaseRemoteGDB(_system
, c
, NumGDBRegs
* sizeof(uint64_t))
150 ///////////////////////////////////////////////////////////
153 // Determine if the mapping at va..(va+len) is valid.
156 RemoteGDB::acc(Addr va
, size_t len
)
158 //@Todo In NetBSD, this function checks if all addresses
159 // from va to va + len have valid page map entries. Not
160 // sure how this will work for other OSes or in general.
167 // Check to make sure the first byte is mapped into the processes
169 if (context
->getProcessPtr()->pTable
->lookup(va
, entry
))
175 ///////////////////////////////////////////////////////////
176 // RemoteGDB::getregs
178 // Translate the kernel debugger register format into
179 // the GDB register format.
183 memset(gdbregs
.regs
, 0, gdbregs
.size
);
185 PCState pc
= context
->pcState();
186 PSTATE pstate
= context
->readMiscReg(MISCREG_PSTATE
);
189 gdbregs
.regs32
[Reg32Pc
] = htobe((uint32_t)pc
.pc());
190 gdbregs
.regs32
[Reg32Npc
] = htobe((uint32_t)pc
.npc());
191 for (int x
= RegG0
; x
<= RegI0
+ 7; x
++)
192 gdbregs
.regs32
[x
] = htobe((uint32_t)context
->readIntReg(x
- RegG0
));
194 gdbregs
.regs32
[Reg32Y
] =
195 htobe((uint32_t)context
->readIntReg(NumIntArchRegs
+ 1));
196 gdbregs
.regs32
[Reg32Psr
] = htobe((uint32_t)pstate
);
197 gdbregs
.regs32
[Reg32Fsr
] =
198 htobe((uint32_t)context
->readMiscReg(MISCREG_FSR
));
199 gdbregs
.regs32
[Reg32Csr
] =
200 htobe((uint32_t)context
->readIntReg(NumIntArchRegs
+ 2));
202 gdbregs
.regs64
[RegPc
] = htobe(pc
.pc());
203 gdbregs
.regs64
[RegNpc
] = htobe(pc
.npc());
204 for (int x
= RegG0
; x
<= RegI0
+ 7; x
++)
205 gdbregs
.regs64
[x
] = htobe(context
->readIntReg(x
- RegG0
));
207 gdbregs
.regs64
[RegFsr
] = htobe(context
->readMiscReg(MISCREG_FSR
));
208 gdbregs
.regs64
[RegFprs
] = htobe(context
->readMiscReg(MISCREG_FPRS
));
209 gdbregs
.regs64
[RegY
] = htobe(context
->readIntReg(NumIntArchRegs
+ 1));
210 gdbregs
.regs64
[RegState
] = htobe(
211 context
->readMiscReg(MISCREG_CWP
) |
213 context
->readMiscReg(MISCREG_ASI
) << 24 |
214 context
->readIntReg(NumIntArchRegs
+ 2) << 32);
217 DPRINTF(GDBRead
, "PC=%#x\n", gdbregs
.regs64
[RegPc
]);
219 // Floating point registers are left at 0 in netbsd
220 // All registers other than the pc, npc and int regs
221 // are ignored as well.
224 ///////////////////////////////////////////////////////////
225 // RemoteGDB::setregs
227 // Translate the GDB register format into the kernel
228 // debugger register format.
234 pc
.pc(gdbregs
.regs64
[RegPc
]);
235 pc
.npc(gdbregs
.regs64
[RegNpc
]);
236 pc
.nnpc(pc
.npc() + sizeof(MachInst
));
239 context
->pcState(pc
);
240 for (int x
= RegG0
; x
<= RegI0
+ 7; x
++)
241 context
->setIntReg(x
- RegG0
, gdbregs
.regs64
[x
]);
242 // Only the integer registers, pc and npc are set in netbsd