1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
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.
15 *
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.
27 *
28 * Authors: Nathan Binkert
29 */
30
31/*
32 * Copyright (c) 1990, 1993
33 * The Regents of the University of California. All rights reserved.
34 *
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.
38 *
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.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
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.
59 *
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
70 * SUCH DAMAGE.
71 *
72 * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
73 */
74
75/*-
76 * Copyright (c) 2001 The NetBSD Foundation, Inc.
77 * All rights reserved.
78 *
79 * This code is derived from software contributed to The NetBSD Foundation
80 * by Jason R. Thorpe.
81 *
82 * Redistribution and use in source and binary forms, with or without
83 * modification, are permitted provided that the following conditions
84 * are met:
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.
97 *
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.
109 */
110
111/*
112 * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
113 *
114 * Taken from NetBSD
115 *
116 * "Stub" to allow remote cpu to debug over a serial line using gdb.
117 */
118
119#include <sys/signal.h>
120
121#include <string>
122#include <unistd.h>
123
124#include "arch/vtophys.hh"
125#include "arch/sparc/remote_gdb.hh"
126#include "base/intmath.hh"
| 1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
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.
15 *
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.
27 *
28 * Authors: Nathan Binkert
29 */
30
31/*
32 * Copyright (c) 1990, 1993
33 * The Regents of the University of California. All rights reserved.
34 *
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.
38 *
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.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
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.
59 *
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
70 * SUCH DAMAGE.
71 *
72 * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
73 */
74
75/*-
76 * Copyright (c) 2001 The NetBSD Foundation, Inc.
77 * All rights reserved.
78 *
79 * This code is derived from software contributed to The NetBSD Foundation
80 * by Jason R. Thorpe.
81 *
82 * Redistribution and use in source and binary forms, with or without
83 * modification, are permitted provided that the following conditions
84 * are met:
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.
97 *
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.
109 */
110
111/*
112 * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
113 *
114 * Taken from NetBSD
115 *
116 * "Stub" to allow remote cpu to debug over a serial line using gdb.
117 */
118
119#include <sys/signal.h>
120
121#include <string>
122#include <unistd.h>
123
124#include "arch/vtophys.hh"
125#include "arch/sparc/remote_gdb.hh"
126#include "base/intmath.hh"
|
127#include "base/kgdb.h"
| |
128#include "base/remote_gdb.hh"
129#include "base/socket.hh"
130#include "base/trace.hh"
131#include "config/full_system.hh"
132#include "cpu/thread_context.hh"
133#include "cpu/static_inst.hh"
134#include "mem/physical.hh"
135#include "mem/port.hh"
136#include "sim/system.hh"
137
138using namespace std;
139using namespace TheISA;
140
| 127#include "base/remote_gdb.hh"
128#include "base/socket.hh"
129#include "base/trace.hh"
130#include "config/full_system.hh"
131#include "cpu/thread_context.hh"
132#include "cpu/static_inst.hh"
133#include "mem/physical.hh"
134#include "mem/port.hh"
135#include "sim/system.hh"
136
137using namespace std;
138using namespace TheISA;
139
|
141RemoteGDB::Event::Event(RemoteGDB *g, int fd, int e)
142 : PollEvent(fd, e), gdb(g)
143{}
144
145void
146RemoteGDB::Event::process(int revent)
147{
148 if (revent & POLLIN)
149 gdb->trap(ALPHA_KENTRY_IF);
150 else if (revent & POLLNVAL)
151 gdb->detach();
152}
153
| |
154RemoteGDB::RemoteGDB(System *_system, ThreadContext *c)
| 140RemoteGDB::RemoteGDB(System *_system, ThreadContext *c)
|
155 : BaseRemoteGDB(_system, c, KGDB_NUMREGS),
156 event(NULL)
| 141 : BaseRemoteGDB(_system, c, NumGDBRegs)
|
157{}
158
| 142{}
143
|
159RemoteGDB::~RemoteGDB()
160{
161 if (event)
162 delete event;
163}
164
| |
165///////////////////////////////////////////////////////////
166// RemoteGDB::acc
167//
168// Determine if the mapping at va..(va+len) is valid.
169//
170bool
171RemoteGDB::acc(Addr va, size_t len)
172{
| 144///////////////////////////////////////////////////////////
145// RemoteGDB::acc
146//
147// Determine if the mapping at va..(va+len) is valid.
148//
149bool
150RemoteGDB::acc(Addr va, size_t len)
151{
|
| 152#if 0
|
173 Addr last_va;
174
175 va = TheISA::TruncPage(va);
176 last_va = TheISA::RoundPage(va + len);
177
178 do {
179 if (TheISA::IsK0Seg(va)) {
180 if (va < (TheISA::K0SegBase + pmem->size())) {
181 DPRINTF(GDBAcc, "acc: Mapping is valid K0SEG <= "
182 "%#x < K0SEG + size\n", va);
183 return true;
184 } else {
185 DPRINTF(GDBAcc, "acc: Mapping invalid %#x > K0SEG + size\n",
186 va);
187 return false;
188 }
189 }
190
191 /**
192 * This code says that all accesses to palcode (instruction and data)
193 * are valid since there isn't a va->pa mapping because palcode is
194 * accessed physically. At some point this should probably be cleaned up
195 * but there is no easy way to do it.
196 */
197
198 if (AlphaISA::PcPAL(va) || va < 0x10000)
199 return true;
200
201 Addr ptbr = context->readMiscReg(AlphaISA::IPR_PALtemp20);
202 TheISA::PageTableEntry pte = TheISA::kernel_pte_lookup(context->getPhysPort(), ptbr, va);
203 if (!pte.valid()) {
204 DPRINTF(GDBAcc, "acc: %#x pte is invalid\n", va);
205 return false;
206 }
207 va += TheISA::PageBytes;
208 } while (va < last_va);
209
210 DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va);
| 153 Addr last_va;
154
155 va = TheISA::TruncPage(va);
156 last_va = TheISA::RoundPage(va + len);
157
158 do {
159 if (TheISA::IsK0Seg(va)) {
160 if (va < (TheISA::K0SegBase + pmem->size())) {
161 DPRINTF(GDBAcc, "acc: Mapping is valid K0SEG <= "
162 "%#x < K0SEG + size\n", va);
163 return true;
164 } else {
165 DPRINTF(GDBAcc, "acc: Mapping invalid %#x > K0SEG + size\n",
166 va);
167 return false;
168 }
169 }
170
171 /**
172 * This code says that all accesses to palcode (instruction and data)
173 * are valid since there isn't a va->pa mapping because palcode is
174 * accessed physically. At some point this should probably be cleaned up
175 * but there is no easy way to do it.
176 */
177
178 if (AlphaISA::PcPAL(va) || va < 0x10000)
179 return true;
180
181 Addr ptbr = context->readMiscReg(AlphaISA::IPR_PALtemp20);
182 TheISA::PageTableEntry pte = TheISA::kernel_pte_lookup(context->getPhysPort(), ptbr, va);
183 if (!pte.valid()) {
184 DPRINTF(GDBAcc, "acc: %#x pte is invalid\n", va);
185 return false;
186 }
187 va += TheISA::PageBytes;
188 } while (va < last_va);
189
190 DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va);
|
| 191#endif
|
211 return true;
212}
213
214///////////////////////////////////////////////////////////
| 192 return true;
193}
194
195///////////////////////////////////////////////////////////
|
215// RemoteGDB::signal
216//
217// Translate a trap number into a Unix-compatible signal number.
218// (GDB only understands Unix signal numbers.)
219//
220int
221RemoteGDB::signal(int type)
222{
223 switch (type) {
224 case ALPHA_KENTRY_INT:
225 return (SIGTRAP);
226
227 case ALPHA_KENTRY_UNA:
228 return (SIGBUS);
229
230 case ALPHA_KENTRY_ARITH:
231 return (SIGFPE);
232
233 case ALPHA_KENTRY_IF:
234 return (SIGILL);
235
236 case ALPHA_KENTRY_MM:
237 return (SIGSEGV);
238
239 default:
240 panic("unknown signal type");
241 return 0;
242 }
243}
244
245///////////////////////////////////////////////////////////
| |
246// RemoteGDB::getregs
247//
248// Translate the kernel debugger register format into
249// the GDB register format.
250void
251RemoteGDB::getregs()
252{
253 memset(gdbregs.regs, 0, gdbregs.size);
254
| 196// RemoteGDB::getregs
197//
198// Translate the kernel debugger register format into
199// the GDB register format.
200void
201RemoteGDB::getregs()
202{
203 memset(gdbregs.regs, 0, gdbregs.size);
204
|
255 gdbregs.regs[KGDB_REG_PC] = context->readPC();
256
257 // @todo: Currently this is very Alpha specific.
258 if (AlphaISA::PcPAL(gdbregs.regs[KGDB_REG_PC])) {
259 for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
260 gdbregs.regs[i] = context->readIntReg(AlphaISA::reg_redir[i]);
261 }
262 } else {
263 for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
264 gdbregs.regs[i] = context->readIntReg(i);
265 }
266 }
267
268#ifdef KGDB_FP_REGS
269 for (int i = 0; i < TheISA::NumFloatArchRegs; ++i) {
270 gdbregs.regs[i + KGDB_REG_F0] = context->readFloatRegBits(i);
271 }
272#endif
| 205 gdbregs.regs[RegPc] = context->readPC();
206 gdbregs.regs[RegNpc] = context->readNextPC();
207 for(int x = RegG0; x <= RegI7; x++)
208 gdbregs.regs[x] = context->readIntReg(x - RegG0);
209 for(int x = RegF0; x <= RegF31; x++)
210 gdbregs.regs[x] = context->readFloatRegBits(x - RegF0);
211 gdbregs.regs[RegY] = context->readMiscReg(MISCREG_Y);
212 //XXX need to also load up Psr, Wim, Tbr, Fpsr, and Cpsr
|
273}
274
275///////////////////////////////////////////////////////////
276// RemoteGDB::setregs
277//
278// Translate the GDB register format into the kernel
279// debugger register format.
280//
281void
282RemoteGDB::setregs()
283{
| 213}
214
215///////////////////////////////////////////////////////////
216// RemoteGDB::setregs
217//
218// Translate the GDB register format into the kernel
219// debugger register format.
220//
221void
222RemoteGDB::setregs()
223{
|
284 // @todo: Currently this is very Alpha specific.
285 if (AlphaISA::PcPAL(gdbregs.regs[KGDB_REG_PC])) {
286 for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
287 context->setIntReg(AlphaISA::reg_redir[i], gdbregs.regs[i]);
288 }
289 } else {
290 for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
291 context->setIntReg(i, gdbregs.regs[i]);
292 }
293 }
294
295#ifdef KGDB_FP_REGS
296 for (int i = 0; i < TheISA::NumFloatArchRegs; ++i) {
297 context->setFloatRegBits(i, gdbregs.regs[i + KGDB_REG_F0]);
298 }
299#endif
300 context->setPC(gdbregs.regs[KGDB_REG_PC]);
| 224 context->setPC(gdbregs.regs[RegPc]);
225 context->setNextPC(gdbregs.regs[RegNpc]);
226 for(int x = RegG0; x <= RegI7; x++)
227 context->setIntReg(x - RegG0, gdbregs.regs[x]);
228 for(int x = RegF0; x <= RegF31; x++)
229 context->setFloatRegBits(x - RegF0, gdbregs.regs[x]);
230 context->setMiscRegWithEffect(MISCREG_Y, gdbregs.regs[RegY]);
231 //XXX need to also set Psr, Wim, Tbr, Fpsr, and Cpsr
|
301}
302
303void
| 232}
233
234void
|
304RemoteGDB::setTempBreakpoint(TempBreakpoint &bkpt, Addr addr)
305{
306 DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n", addr);
307
308 bkpt.address = addr;
309 insertHardBreak(addr, 4);
310}
311
312void
313RemoteGDB::clearTempBreakpoint(TempBreakpoint &bkpt)
314{
315 DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n",
316 bkpt.address);
317
318
319 removeHardBreak(bkpt.address, 4);
320 bkpt.address = 0;
321}
322
323void
| |
324RemoteGDB::clearSingleStep()
325{
| 235RemoteGDB::clearSingleStep()
236{
|
| 237#if 0
|
326 DPRINTF(GDBMisc, "clearSingleStep bt_addr=%#x nt_addr=%#x\n",
327 takenBkpt.address, notTakenBkpt.address);
328
329 if (takenBkpt.address != 0)
330 clearTempBreakpoint(takenBkpt);
331
332 if (notTakenBkpt.address != 0)
333 clearTempBreakpoint(notTakenBkpt);
| 238 DPRINTF(GDBMisc, "clearSingleStep bt_addr=%#x nt_addr=%#x\n",
239 takenBkpt.address, notTakenBkpt.address);
240
241 if (takenBkpt.address != 0)
242 clearTempBreakpoint(takenBkpt);
243
244 if (notTakenBkpt.address != 0)
245 clearTempBreakpoint(notTakenBkpt);
|
| 246#endif
|
334}
335
336void
337RemoteGDB::setSingleStep()
338{
| 247}
248
249void
250RemoteGDB::setSingleStep()
251{
|
| 252#if 0
|
339 Addr pc = context->readPC();
340 Addr npc, bpc;
341 bool set_bt = false;
342
343 npc = pc + sizeof(MachInst);
344
345 // User was stopped at pc, e.g. the instruction at pc was not
346 // executed.
347 MachInst inst = read<MachInst>(pc);
348 StaticInstPtr si(inst);
349 if (si->hasBranchTarget(pc, context, bpc)) {
350 // Don't bother setting a breakpoint on the taken branch if it
351 // is the same as the next pc
352 if (bpc != npc)
353 set_bt = true;
354 }
355
356 DPRINTF(GDBMisc, "setSingleStep bt_addr=%#x nt_addr=%#x\n",
357 takenBkpt.address, notTakenBkpt.address);
358
359 setTempBreakpoint(notTakenBkpt, npc);
360
361 if (set_bt)
362 setTempBreakpoint(takenBkpt, bpc);
| 253 Addr pc = context->readPC();
254 Addr npc, bpc;
255 bool set_bt = false;
256
257 npc = pc + sizeof(MachInst);
258
259 // User was stopped at pc, e.g. the instruction at pc was not
260 // executed.
261 MachInst inst = read<MachInst>(pc);
262 StaticInstPtr si(inst);
263 if (si->hasBranchTarget(pc, context, bpc)) {
264 // Don't bother setting a breakpoint on the taken branch if it
265 // is the same as the next pc
266 if (bpc != npc)
267 set_bt = true;
268 }
269
270 DPRINTF(GDBMisc, "setSingleStep bt_addr=%#x nt_addr=%#x\n",
271 takenBkpt.address, notTakenBkpt.address);
272
273 setTempBreakpoint(notTakenBkpt, npc);
274
275 if (set_bt)
276 setTempBreakpoint(takenBkpt, bpc);
|
363}
364
365// Write bytes to kernel address space for debugger.
366bool
367RemoteGDB::write(Addr vaddr, size_t size, const char *data)
368{
369 if (BaseRemoteGDB::write(vaddr, size, data)) {
370#ifdef IMB
371 alpha_pal_imb();
| |
372#endif
| 277#endif
|
373 return true;
374 } else {
375 return false;
376 }
| |
377}
| 278}
|
378
379
380PCEventQueue *RemoteGDB::getPcEventQueue()
381{
382 return &system->pcEventQueue;
383}
384
385
386RemoteGDB::HardBreakpoint::HardBreakpoint(RemoteGDB *_gdb, Addr pc)
387 : PCEvent(_gdb->getPcEventQueue(), "HardBreakpoint Event", pc),
388 gdb(_gdb), refcount(0)
389{
390 DPRINTF(GDBMisc, "creating hardware breakpoint at %#x\n", evpc);
391}
392
393void
394RemoteGDB::HardBreakpoint::process(ThreadContext *tc)
395{
396 DPRINTF(GDBMisc, "handling hardware breakpoint at %#x\n", pc());
397
398 if (tc == gdb->context)
399 gdb->trap(ALPHA_KENTRY_INT);
400}
401
402bool
403RemoteGDB::insertSoftBreak(Addr addr, size_t len)
404{
405 if (len != sizeof(MachInst))
406 panic("invalid length\n");
407
408 return insertHardBreak(addr, len);
409}
410
411bool
412RemoteGDB::removeSoftBreak(Addr addr, size_t len)
413{
414 if (len != sizeof(MachInst))
415 panic("invalid length\n");
416
417 return removeHardBreak(addr, len);
418}
419
420bool
421RemoteGDB::insertHardBreak(Addr addr, size_t len)
422{
423 if (len != sizeof(MachInst))
424 panic("invalid length\n");
425
426 DPRINTF(GDBMisc, "inserting hardware breakpoint at %#x\n", addr);
427
428 HardBreakpoint *&bkpt = hardBreakMap[addr];
429 if (bkpt == 0)
430 bkpt = new HardBreakpoint(this, addr);
431
432 bkpt->refcount++;
433
434 return true;
435}
436
437bool
438RemoteGDB::removeHardBreak(Addr addr, size_t len)
439{
440 if (len != sizeof(MachInst))
441 panic("invalid length\n");
442
443 DPRINTF(GDBMisc, "removing hardware breakpoint at %#x\n", addr);
444
445 break_iter_t i = hardBreakMap.find(addr);
446 if (i == hardBreakMap.end())
447 return false;
448
449 HardBreakpoint *hbp = (*i).second;
450 if (--hbp->refcount == 0) {
451 delete hbp;
452 hardBreakMap.erase(i);
453 }
454
455 return true;
456}
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