remote_gdb.cc (9020:14321ce30881) remote_gdb.cc (10595:25ecfc14f73f)
1/*
1/*
2 * Copyright 2014 Google, Inc.
2 * Copyright (c) 2010 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license

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143#include "debug/GDBMisc.hh"
144#include "mem/page_table.hh"
145#include "sim/full_system.hh"
146
147using namespace std;
148using namespace MipsISA;
149
150RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc)
3 * Copyright (c) 2010 ARM Limited
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating
9 * to a hardware implementation of the functionality of the software
10 * licensed hereunder. You may use the software subject to the license

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144#include "debug/GDBMisc.hh"
145#include "mem/page_table.hh"
146#include "sim/full_system.hh"
147
148using namespace std;
149using namespace MipsISA;
150
151RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc)
151 : BaseRemoteGDB(_system, tc, GdbNumRegs)
152 : BaseRemoteGDB(_system, tc, GdbNumRegs * sizeof(uint32_t))
152{
153}
154
155/*
156 * Determine if the mapping at va..(va+len) is valid.
157 */
158bool
159RemoteGDB::acc(Addr va, size_t len)

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176{
177 DPRINTF(GDBAcc, "getregs in remotegdb \n");
178 memset(gdbregs.regs, 0, gdbregs.bytes());
179
180 // MIPS registers are 32 bits wide, gdb registers are 64 bits wide
181 // two MIPS registers are packed into one gdb register (little endian)
182
183 // INTREG: R0~R31
153{
154}
155
156/*
157 * Determine if the mapping at va..(va+len) is valid.
158 */
159bool
160RemoteGDB::acc(Addr va, size_t len)

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177{
178 DPRINTF(GDBAcc, "getregs in remotegdb \n");
179 memset(gdbregs.regs, 0, gdbregs.bytes());
180
181 // MIPS registers are 32 bits wide, gdb registers are 64 bits wide
182 // two MIPS registers are packed into one gdb register (little endian)
183
184 // INTREG: R0~R31
184 for (int i = 0; i < GdbIntArchRegs; i++) {
185 gdbregs.regs[i] = pack(
186 context->readIntReg(i * 2),
187 context->readIntReg(i * 2 + 1));
188 }
185 for (int i = 0; i < GdbIntArchRegs; i++)
186 gdbregs.regs32[i] = context->readIntReg(i);
189 // SR, LO, HI, BADVADDR, CAUSE, PC
187 // SR, LO, HI, BADVADDR, CAUSE, PC
190 gdbregs.regs[GdbIntArchRegs + 0] = pack(
191 context->readMiscRegNoEffect(MISCREG_STATUS),
192 context->readIntReg(INTREG_LO));
193 gdbregs.regs[GdbIntArchRegs + 1] = pack(
194 context->readIntReg(INTREG_HI),
195 context->readMiscRegNoEffect(MISCREG_BADVADDR));
196 gdbregs.regs[GdbIntArchRegs + 2] = pack(
197 context->readMiscRegNoEffect(MISCREG_CAUSE),
198 context->pcState().pc());
188 gdbregs.regs32[GdbIntArchRegs + 0] =
189 context->readMiscRegNoEffect(MISCREG_STATUS);
190 gdbregs.regs32[GdbIntArchRegs + 1] = context->readIntReg(INTREG_LO);
191 gdbregs.regs32[GdbIntArchRegs + 2] = context->readIntReg(INTREG_HI);
192 gdbregs.regs32[GdbIntArchRegs + 3] =
193 context->readMiscRegNoEffect(MISCREG_BADVADDR);
194 gdbregs.regs32[GdbIntArchRegs + 4] =
195 context->readMiscRegNoEffect(MISCREG_CAUSE);
196 gdbregs.regs32[GdbIntArchRegs + 5] = context->pcState().pc();
199 // FLOATREG: F0~F31
197 // FLOATREG: F0~F31
200 for (int i = 0; i < GdbFloatArchRegs; i++) {
201 gdbregs.regs[GdbIntRegs + i] = pack(
202 context->readFloatRegBits(i * 2),
203 context->readFloatRegBits(i * 2 + 1));
204 }
198 for (int i = 0; i < GdbFloatArchRegs; i++)
199 gdbregs.regs32[GdbIntRegs + i] = context->readFloatRegBits(i);
205 // FCR, FIR
200 // FCR, FIR
206 gdbregs.regs[GdbIntRegs + GdbFloatArchRegs + 0] = pack(
207 context->readFloatRegBits(FLOATREG_FCCR),
208 context->readFloatRegBits(FLOATREG_FIR));
201 gdbregs.regs32[GdbIntRegs + GdbFloatArchRegs + 0] =
202 context->readFloatRegBits(FLOATREG_FCCR);
203 gdbregs.regs32[GdbIntRegs + GdbFloatArchRegs + 1] =
204 context->readFloatRegBits(FLOATREG_FIR);
209}
210
211/*
212 * Translate the GDB register format into the kernel debugger register
213 * format.
214 */
215void
216RemoteGDB::setregs()
217{
218 DPRINTF(GDBAcc, "setregs in remotegdb \n");
219
205}
206
207/*
208 * Translate the GDB register format into the kernel debugger register
209 * format.
210 */
211void
212RemoteGDB::setregs()
213{
214 DPRINTF(GDBAcc, "setregs in remotegdb \n");
215
220 // MIPS registers are 32 bits wide, gdb registers are 64 bits wide
221 // two MIPS registers are packed into one gdb register (little endian)
222
223 // INTREG: R0~R31
216 // INTREG: R0~R31
224 for (int i = 0; i < GdbIntArchRegs; i++) {
225 if (i) context->setIntReg(i * 2,
226 unpackLo(gdbregs.regs[i]));
227 context->setIntReg(i * 2 + 1,
228 unpackHi(gdbregs.regs[i]));
229 }
217 for (int i = 1; i < GdbIntArchRegs; i++)
218 context->setIntReg(i, gdbregs.regs32[i]);
230 // SR, LO, HI, BADVADDR, CAUSE, PC
231 context->setMiscRegNoEffect(MISCREG_STATUS,
219 // SR, LO, HI, BADVADDR, CAUSE, PC
220 context->setMiscRegNoEffect(MISCREG_STATUS,
232 unpackLo(gdbregs.regs[GdbIntArchRegs + 0]));
233 context->setIntReg(INTREG_LO,
234 unpackHi(gdbregs.regs[GdbIntArchRegs + 0]));
235 context->setIntReg(INTREG_HI,
236 unpackLo(gdbregs.regs[GdbIntArchRegs + 1]));
221 gdbregs.regs32[GdbIntArchRegs + 0]);
222 context->setIntReg(INTREG_LO, gdbregs.regs32[GdbIntArchRegs + 1]);
223 context->setIntReg(INTREG_HI, gdbregs.regs32[GdbIntArchRegs + 2]);
237 context->setMiscRegNoEffect(MISCREG_BADVADDR,
224 context->setMiscRegNoEffect(MISCREG_BADVADDR,
238 unpackHi(gdbregs.regs[GdbIntArchRegs + 1]));
225 gdbregs.regs32[GdbIntArchRegs + 3]);
239 context->setMiscRegNoEffect(MISCREG_CAUSE,
226 context->setMiscRegNoEffect(MISCREG_CAUSE,
240 unpackLo(gdbregs.regs[GdbIntArchRegs + 2]));
241 context->pcState(
242 unpackHi(gdbregs.regs[GdbIntArchRegs + 2]));
227 gdbregs.regs32[GdbIntArchRegs + 4]);
228 context->pcState(gdbregs.regs32[GdbIntArchRegs + 5]);
243 // FLOATREG: F0~F31
229 // FLOATREG: F0~F31
244 for (int i = 0; i < GdbFloatArchRegs; i++) {
245 context->setFloatRegBits(i * 2,
246 unpackLo(gdbregs.regs[GdbIntRegs + i]));
247 context->setFloatRegBits(i * 2 + 1,
248 unpackHi(gdbregs.regs[GdbIntRegs + i]));
249 }
230 for (int i = 0; i < GdbFloatArchRegs; i++)
231 context->setFloatRegBits(i, gdbregs.regs32[GdbIntRegs + i]);
250 // FCR, FIR
251 context->setFloatRegBits(FLOATREG_FCCR,
232 // FCR, FIR
233 context->setFloatRegBits(FLOATREG_FCCR,
252 unpackLo(gdbregs.regs[GdbIntRegs + GdbFloatArchRegs + 0]));
234 gdbregs.regs32[GdbIntRegs + GdbFloatArchRegs + 0]);
253 context->setFloatRegBits(FLOATREG_FIR,
235 context->setFloatRegBits(FLOATREG_FIR,
254 unpackHi(gdbregs.regs[GdbIntRegs + GdbFloatArchRegs + 0]));
236 gdbregs.regs32[GdbIntRegs + GdbFloatArchRegs + 1]);
255}
256
257void
258RemoteGDB::clearSingleStep()
259{
260 DPRINTF(GDBMisc, "clearSingleStep bt_addr=%#x nt_addr=%#x\n",
261 takenBkpt, notTakenBkpt);
262

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238
239void
240RemoteGDB::clearSingleStep()
241{
242 DPRINTF(GDBMisc, "clearSingleStep bt_addr=%#x nt_addr=%#x\n",
243 takenBkpt, notTakenBkpt);
244

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