remote_gdb.cc (5543:3af77710f397) remote_gdb.cc (5567:8fc3b004b0df)
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;

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135#include "base/trace.hh"
136#include "cpu/thread_context.hh"
137#include "cpu/static_inst.hh"
138#include "mem/physical.hh"
139#include "mem/port.hh"
140#include "sim/system.hh"
141
142using namespace std;
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;

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135#include "base/trace.hh"
136#include "cpu/thread_context.hh"
137#include "cpu/static_inst.hh"
138#include "mem/physical.hh"
139#include "mem/port.hh"
140#include "sim/system.hh"
141
142using namespace std;
143using namespace TheISA;
143using namespace AlphaISA;
144
145RemoteGDB::RemoteGDB(System *_system, ThreadContext *c)
146 : BaseRemoteGDB(_system, c, KGDB_NUMREGS)
147{
148 memset(gdbregs.regs, 0, gdbregs.bytes());
149}
150
151///////////////////////////////////////////////////////////

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156bool
157RemoteGDB::acc(Addr va, size_t len)
158{
159#if !FULL_SYSTEM
160 panic("acc function needs to be rewritten for SE mode\n");
161#else
162 Addr last_va;
163
144
145RemoteGDB::RemoteGDB(System *_system, ThreadContext *c)
146 : BaseRemoteGDB(_system, c, KGDB_NUMREGS)
147{
148 memset(gdbregs.regs, 0, gdbregs.bytes());
149}
150
151///////////////////////////////////////////////////////////

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156bool
157RemoteGDB::acc(Addr va, size_t len)
158{
159#if !FULL_SYSTEM
160 panic("acc function needs to be rewritten for SE mode\n");
161#else
162 Addr last_va;
163
164 va = TheISA::TruncPage(va);
165 last_va = TheISA::RoundPage(va + len);
164 va = AlphaISA::TruncPage(va);
165 last_va = AlphaISA::RoundPage(va + len);
166
167 do {
166
167 do {
168 if (TheISA::IsK0Seg(va)) {
169 if (va < (TheISA::K0SegBase + pmem->size())) {
168 if (AlphaISA::IsK0Seg(va)) {
169 if (va < (AlphaISA::K0SegBase + pmem->size())) {
170 DPRINTF(GDBAcc, "acc: Mapping is valid K0SEG <= "
171 "%#x < K0SEG + size\n", va);
172 return true;
173 } else {
174 DPRINTF(GDBAcc, "acc: Mapping invalid %#x > K0SEG + size\n",
175 va);
176 return false;
177 }

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183 * accessed physically. At some point this should probably be cleaned up
184 * but there is no easy way to do it.
185 */
186
187 if (AlphaISA::PcPAL(va) || va < 0x10000)
188 return true;
189
190 Addr ptbr = context->readMiscRegNoEffect(AlphaISA::IPR_PALtemp20);
170 DPRINTF(GDBAcc, "acc: Mapping is valid K0SEG <= "
171 "%#x < K0SEG + size\n", va);
172 return true;
173 } else {
174 DPRINTF(GDBAcc, "acc: Mapping invalid %#x > K0SEG + size\n",
175 va);
176 return false;
177 }

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183 * accessed physically. At some point this should probably be cleaned up
184 * but there is no easy way to do it.
185 */
186
187 if (AlphaISA::PcPAL(va) || va < 0x10000)
188 return true;
189
190 Addr ptbr = context->readMiscRegNoEffect(AlphaISA::IPR_PALtemp20);
191 TheISA::PageTableEntry pte = TheISA::kernel_pte_lookup(context->getPhysPort(), ptbr, va);
191 AlphaISA::PageTableEntry pte = AlphaISA::kernel_pte_lookup(context->getPhysPort(), ptbr, va);
192 if (!pte.valid()) {
193 DPRINTF(GDBAcc, "acc: %#x pte is invalid\n", va);
194 return false;
195 }
192 if (!pte.valid()) {
193 DPRINTF(GDBAcc, "acc: %#x pte is invalid\n", va);
194 return false;
195 }
196 va += TheISA::PageBytes;
196 va += AlphaISA::PageBytes;
197 } while (va < last_va);
198
199 DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va);
200 return true;
201#endif
202}
203
204///////////////////////////////////////////////////////////

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210RemoteGDB::getregs()
211{
212 memset(gdbregs.regs, 0, gdbregs.bytes());
213
214 gdbregs.regs[KGDB_REG_PC] = context->readPC();
215
216 // @todo: Currently this is very Alpha specific.
217 if (AlphaISA::PcPAL(gdbregs.regs[KGDB_REG_PC])) {
197 } while (va < last_va);
198
199 DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va);
200 return true;
201#endif
202}
203
204///////////////////////////////////////////////////////////

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210RemoteGDB::getregs()
211{
212 memset(gdbregs.regs, 0, gdbregs.bytes());
213
214 gdbregs.regs[KGDB_REG_PC] = context->readPC();
215
216 // @todo: Currently this is very Alpha specific.
217 if (AlphaISA::PcPAL(gdbregs.regs[KGDB_REG_PC])) {
218 for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
218 for (int i = 0; i < AlphaISA::NumIntArchRegs; ++i) {
219 gdbregs.regs[i] = context->readIntReg(AlphaISA::reg_redir[i]);
220 }
221 } else {
219 gdbregs.regs[i] = context->readIntReg(AlphaISA::reg_redir[i]);
220 }
221 } else {
222 for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
222 for (int i = 0; i < AlphaISA::NumIntArchRegs; ++i) {
223 gdbregs.regs[i] = context->readIntReg(i);
224 }
225 }
226
227#ifdef KGDB_FP_REGS
223 gdbregs.regs[i] = context->readIntReg(i);
224 }
225 }
226
227#ifdef KGDB_FP_REGS
228 for (int i = 0; i < TheISA::NumFloatArchRegs; ++i) {
228 for (int i = 0; i < AlphaISA::NumFloatArchRegs; ++i) {
229 gdbregs.regs[i + KGDB_REG_F0] = context->readFloatRegBits(i);
230 }
231#endif
232}
233
234///////////////////////////////////////////////////////////
235// RemoteGDB::setregs
236//
237// Translate the GDB register format into the kernel
238// debugger register format.
239//
240void
241RemoteGDB::setregs()
242{
243 // @todo: Currently this is very Alpha specific.
244 if (AlphaISA::PcPAL(gdbregs.regs[KGDB_REG_PC])) {
229 gdbregs.regs[i + KGDB_REG_F0] = context->readFloatRegBits(i);
230 }
231#endif
232}
233
234///////////////////////////////////////////////////////////
235// RemoteGDB::setregs
236//
237// Translate the GDB register format into the kernel
238// debugger register format.
239//
240void
241RemoteGDB::setregs()
242{
243 // @todo: Currently this is very Alpha specific.
244 if (AlphaISA::PcPAL(gdbregs.regs[KGDB_REG_PC])) {
245 for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
245 for (int i = 0; i < AlphaISA::NumIntArchRegs; ++i) {
246 context->setIntReg(AlphaISA::reg_redir[i], gdbregs.regs[i]);
247 }
248 } else {
246 context->setIntReg(AlphaISA::reg_redir[i], gdbregs.regs[i]);
247 }
248 } else {
249 for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
249 for (int i = 0; i < AlphaISA::NumIntArchRegs; ++i) {
250 context->setIntReg(i, gdbregs.regs[i]);
251 }
252 }
253
254#ifdef KGDB_FP_REGS
250 context->setIntReg(i, gdbregs.regs[i]);
251 }
252 }
253
254#ifdef KGDB_FP_REGS
255 for (int i = 0; i < TheISA::NumFloatArchRegs; ++i) {
255 for (int i = 0; i < AlphaISA::NumFloatArchRegs; ++i) {
256 context->setFloatRegBits(i, gdbregs.regs[i + KGDB_REG_F0]);
257 }
258#endif
259 context->setPC(gdbregs.regs[KGDB_REG_PC]);
260}
261
262void
263RemoteGDB::clearSingleStep()

--- 54 unchanged lines hidden --- 		256 context->setFloatRegBits(i, gdbregs.regs[i + KGDB_REG_F0]);
257 }
258#endif
259 context->setPC(gdbregs.regs[KGDB_REG_PC]);
260}
261
262void
263RemoteGDB::clearSingleStep()

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