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;

--- 107 unchanged lines hidden (view full) ---

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/alpha/kgdb.h"
125#include "arch/alpha/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 "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
141RemoteGDB::RemoteGDB(System *_system, ThreadContext *c)
142 : BaseRemoteGDB(_system, c, KGDB_NUMREGS)
143{
144 memset(gdbregs.regs, 0, gdbregs.size);
145}
146
147///////////////////////////////////////////////////////////
148// RemoteGDB::acc
149//
150// Determine if the mapping at va..(va+len) is valid.
151//
152bool

--- 94 unchanged lines hidden (view full) ---

247 for (int i = 0; i < TheISA::NumFloatArchRegs; ++i) {
248 context->setFloatRegBits(i, gdbregs.regs[i + KGDB_REG_F0]);
249 }
250#endif
251 context->setPC(gdbregs.regs[KGDB_REG_PC]);
252}
253
254void
255RemoteGDB::clearSingleStep()
256{
257 DPRINTF(GDBMisc, "clearSingleStep bt_addr=%#x nt_addr=%#x\n",
258 takenBkpt, notTakenBkpt);
259
260 if (takenBkpt != 0)
261 clearTempBreakpoint(takenBkpt);
262
263 if (notTakenBkpt != 0)
264 clearTempBreakpoint(notTakenBkpt);
265}
266
267void
268RemoteGDB::setSingleStep()
269{
270 Addr pc = context->readPC();
271 Addr npc, bpc;

--- 8 unchanged lines hidden (view full) ---

280 if (si->hasBranchTarget(pc, context, bpc)) {
281 // Don't bother setting a breakpoint on the taken branch if it
282 // is the same as the next pc
283 if (bpc != npc)
284 set_bt = true;
285 }
286
287 DPRINTF(GDBMisc, "setSingleStep bt_addr=%#x nt_addr=%#x\n",
288 takenBkpt, notTakenBkpt);
289
290 setTempBreakpoint(notTakenBkpt = npc);
291
292 if (set_bt)
293 setTempBreakpoint(takenBkpt = bpc);
294}
295
296// Write bytes to kernel address space for debugger.
297bool
298RemoteGDB::write(Addr vaddr, size_t size, const char *data)
299{
300 if (BaseRemoteGDB::write(vaddr, size, data)) {
301#ifdef IMB
302 alpha_pal_imb();
303#endif
304 return true;
305 } else {
306 return false;
307 }
308}
309