2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Authors: Nathan Binkert
32 * Copyright (c) 1990, 1993 The Regents of the University of California
35 * This software was developed by the Computer Systems Engineering group
36 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
37 * contributed to Berkeley.
39 * All advertising materials mentioning features or use of this software
40 * must display the following acknowledgement:
41 * This product includes software developed by the University of
42 * California, Lawrence Berkeley Laboratories.
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 * must display the following acknowledgement:
54 * This product includes software developed by the University of
55 * California, Berkeley and its contributors.
56 * 4. Neither the name of the University nor the names of its contributors
57 * may be used to endorse or promote products derived from this software
58 * without specific prior written permission.
60 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
72 * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
76 * Copyright (c) 2001 The NetBSD Foundation, Inc.
77 * All rights reserved.
79 * This code is derived from software contributed to The NetBSD Foundation
82 * Redistribution and use in source and binary forms, with or without
83 * modification, are permitted provided that the following conditions
85 * 1. Redistributions of source code must retain the above copyright
86 * notice, this list of conditions and the following disclaimer.
87 * 2. Redistributions in binary form must reproduce the above copyright
88 * notice, this list of conditions and the following disclaimer in the
89 * documentation and/or other materials provided with the distribution.
90 * 3. All advertising materials mentioning features or use of this software
91 * must display the following acknowledgement:
92 * This product includes software developed by the NetBSD
93 * Foundation, Inc. and its contributors.
94 * 4. Neither the name of The NetBSD Foundation nor the names of its
95 * contributors may be used to endorse or promote products derived
96 * from this software without specific prior written permission.
98 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
99 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
100 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
101 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
102 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
103 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
104 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
105 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
106 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
107 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
108 * POSSIBILITY OF SUCH DAMAGE.
112 * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
116 * "Stub" to allow remote cpu to debug over a serial line using gdb.
120 #include <sys/signal.h>
125 #include "arch/sparc/remote_gdb.hh"
126 #include "arch/vtophys.hh"
127 #include "base/intmath.hh"
128 #include "base/remote_gdb.hh"
129 #include "base/socket.hh"
130 #include "base/trace.hh"
131 #include "cpu/static_inst.hh"
132 #include "cpu/thread_context.hh"
133 #include "debug/GDBRead.hh"
134 #include "mem/page_table.hh"
135 #include "mem/physical.hh"
136 #include "mem/port.hh"
137 #include "sim/byteswap.hh"
138 #include "sim/full_system.hh"
139 #include "sim/process.hh"
140 #include "sim/system.hh"
143 using namespace SparcISA
;
145 RemoteGDB::RemoteGDB(System
*_system
, ThreadContext
*c
)
146 : BaseRemoteGDB(_system
, c
, NumGDBRegs
), nextBkpt(0)
149 ///////////////////////////////////////////////////////////
152 // Determine if the mapping at va..(va+len) is valid.
155 RemoteGDB::acc(Addr va
, size_t len
)
157 //@Todo In NetBSD, this function checks if all addresses
158 // from va to va + len have valid page map entries. Not
159 // sure how this will work for other OSes or in general.
166 // Check to make sure the first byte is mapped into the processes
168 if (context
->getProcessPtr()->pTable
->lookup(va
, entry
))
174 ///////////////////////////////////////////////////////////
175 // RemoteGDB::getregs
177 // Translate the kernel debugger register format into
178 // the GDB register format.
182 memset(gdbregs
.regs
, 0, gdbregs
.size
);
184 PCState pc
= context
->pcState();
185 PSTATE pstate
= context
->readMiscReg(MISCREG_PSTATE
);
189 regs
= (uint32_t*)gdbregs
.regs
;
190 regs
[Reg32Pc
] = htobe((uint32_t)pc
.pc());
191 regs
[Reg32Npc
] = htobe((uint32_t)pc
.npc());
192 for (int x
= RegG0
; x
<= RegI0
+ 7; x
++)
193 regs
[x
] = htobe((uint32_t)context
->readIntReg(x
- RegG0
));
195 regs
[Reg32Y
] = htobe((uint32_t)context
->readIntReg(NumIntArchRegs
+ 1));
196 regs
[Reg32Psr
] = htobe((uint32_t)pstate
);
197 regs
[Reg32Fsr
] = htobe((uint32_t)context
->readMiscReg(MISCREG_FSR
));
198 regs
[Reg32Csr
] = htobe((uint32_t)context
->readIntReg(NumIntArchRegs
+ 2));
200 gdbregs
.regs
[RegPc
] = htobe(pc
.pc());
201 gdbregs
.regs
[RegNpc
] = htobe(pc
.npc());
202 for (int x
= RegG0
; x
<= RegI0
+ 7; x
++)
203 gdbregs
.regs
[x
] = htobe(context
->readIntReg(x
- RegG0
));
205 gdbregs
.regs
[RegFsr
] = htobe(context
->readMiscReg(MISCREG_FSR
));
206 gdbregs
.regs
[RegFprs
] = htobe(context
->readMiscReg(MISCREG_FPRS
));
207 gdbregs
.regs
[RegY
] = htobe(context
->readIntReg(NumIntArchRegs
+ 1));
208 gdbregs
.regs
[RegState
] = htobe(
209 context
->readMiscReg(MISCREG_CWP
) |
211 context
->readMiscReg(MISCREG_ASI
) << 24 |
212 context
->readIntReg(NumIntArchRegs
+ 2) << 32);
215 DPRINTF(GDBRead
, "PC=%#x\n", gdbregs
.regs
[RegPc
]);
217 // Floating point registers are left at 0 in netbsd
218 // All registers other than the pc, npc and int regs
219 // are ignored as well.
222 ///////////////////////////////////////////////////////////
223 // RemoteGDB::setregs
225 // Translate the GDB register format into the kernel
226 // debugger register format.
232 pc
.pc(gdbregs
.regs
[RegPc
]);
233 pc
.npc(gdbregs
.regs
[RegNpc
]);
234 pc
.nnpc(pc
.npc() + sizeof(MachInst
));
237 context
->pcState(pc
);
238 for (int x
= RegG0
; x
<= RegI0
+ 7; x
++)
239 context
->setIntReg(x
- RegG0
, gdbregs
.regs
[x
]);
240 // Only the integer registers, pc and npc are set in netbsd
244 RemoteGDB::clearSingleStep()
247 clearTempBreakpoint(nextBkpt
);
251 RemoteGDB::setSingleStep()
253 nextBkpt
= context
->pcState().npc();
254 setTempBreakpoint(nextBkpt
);