power: Implement Remote GDB
This commit is contained in:
Boris Shingarov
parent
b48ed9b6c2
commit
58cb57bacc
3 changed files with 265 additions and 24 deletions
|
|
@ -47,6 +47,7 @@ if env['TARGET_ISA'] == 'power':
|
|||
Source('isa.cc')
|
||||
Source('pagetable.cc')
|
||||
Source('process.cc')
|
||||
Source('remote_gdb.cc')
|
||||
Source('stacktrace.cc')
|
||||
Source('tlb.cc')
|
||||
Source('utility.cc')
|
||||
|
|
|
|||
237
src/arch/power/remote_gdb.cc
Normal file
237
src/arch/power/remote_gdb.cc
Normal file
|
|
@ -0,0 +1,237 @@
|
|||
/*
|
||||
* Copyright 2014 Google, Inc.
|
||||
* Copyright (c) 2010 ARM Limited
|
||||
* All rights reserved
|
||||
*
|
||||
* The license below extends only to copyright in the software and shall
|
||||
* not be construed as granting a license to any other intellectual
|
||||
* property including but not limited to intellectual property relating
|
||||
* to a hardware implementation of the functionality of the software
|
||||
* licensed hereunder. You may use the software subject to the license
|
||||
* terms below provided that you ensure that this notice is replicated
|
||||
* unmodified and in its entirety in all distributions of the software,
|
||||
* modified or unmodified, in source code or in binary form.
|
||||
*
|
||||
* Copyright (c) 2002-2005 The Regents of The University of Michigan
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are
|
||||
* met: redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer;
|
||||
* redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution;
|
||||
* neither the name of the copyright holders nor the names of its
|
||||
* contributors may be used to endorse or promote products derived from
|
||||
* this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* Authors: Nathan Binkert
|
||||
* William Wang
|
||||
* Deyuan Guo
|
||||
* Boris Shingarov
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 1990, 1993 The Regents of the University of California
|
||||
* All rights reserved
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Lawrence Berkeley Laboratories.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
|
||||
*/
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2001 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Jason R. Thorpe.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the NetBSD
|
||||
* Foundation, Inc. and its contributors.
|
||||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
* $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
|
||||
*
|
||||
* Taken from NetBSD
|
||||
*
|
||||
* "Stub" to allow remote cpu to debug over a serial line using gdb.
|
||||
*/
|
||||
|
||||
#include "arch/power/remote_gdb.hh"
|
||||
|
||||
#include <sys/signal.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <string>
|
||||
|
||||
#include "arch/power/vtophys.hh"
|
||||
#include "cpu/thread_state.hh"
|
||||
#include "debug/GDBAcc.hh"
|
||||
#include "debug/GDBMisc.hh"
|
||||
#include "sim/byteswap.hh"
|
||||
|
||||
using namespace std;
|
||||
using namespace PowerISA;
|
||||
|
||||
RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc)
|
||||
: BaseRemoteGDB(_system, tc, GDB_REG_BYTES)
|
||||
{
|
||||
}
|
||||
|
||||
/*
|
||||
* Determine if the mapping at va..(va+len) is valid.
|
||||
*/
|
||||
bool
|
||||
RemoteGDB::acc(Addr va, size_t len)
|
||||
{
|
||||
TlbEntry entry;
|
||||
//Check to make sure the first byte is mapped into the processes address
|
||||
//space. At the time of this writing, the acc() check is used when
|
||||
//processing the MemR/MemW packets before actually asking the translating
|
||||
//port proxy to read/writeBlob. I (bgs) am not convinced the first byte
|
||||
//check is enough.
|
||||
if (FullSystem)
|
||||
panic("acc not implemented for POWER FS!");
|
||||
else
|
||||
return context->getProcessPtr()->pTable->lookup(va, entry);
|
||||
}
|
||||
|
||||
/*
|
||||
* Translate the kernel debugger register format into the GDB register
|
||||
* format.
|
||||
*
|
||||
* The PowerPC ISA is quite flexible in what register sets may be present
|
||||
* depending on the features implemented by the particular CPU;
|
||||
* GDB addresses this by describing the format of how register contents
|
||||
* are transferred on the wire, in XML files such as 'power-core.xml'.
|
||||
* Ideally, we should be reading these files instead of hardcoding this
|
||||
* information, but for now the following implementation is enough to
|
||||
* serve as the RSP backend for the out-of-the-box, default GDB.
|
||||
*/
|
||||
void
|
||||
RemoteGDB::getregs()
|
||||
{
|
||||
DPRINTF(GDBAcc, "getregs in remotegdb \n");
|
||||
memset(gdbregs.regs, 0, gdbregs.bytes());
|
||||
|
||||
// Default order on 32-bit PowerPC:
|
||||
// R0-R31 (32-bit each), F0-F31 (64-bit IEEE754 double),
|
||||
// PC, MSR, CR, LR, CTR, XER (32-bit each)
|
||||
|
||||
// INTREG: R0~R31
|
||||
for (int i = 0; i < NumIntArchRegs; i++)
|
||||
gdbregs.regs32[GdbFirstGPRIndex + i] = htobe((uint32_t)context->readIntReg(i));
|
||||
|
||||
// FLOATREG: F0~F31
|
||||
for (int i = 0; i < NumFloatArchRegs; i++)
|
||||
gdbregs.regs32[GdbFirstFPRIndex + i] = context->readFloatRegBits(i);
|
||||
|
||||
// PC, MSR, CR, LR, CTR, XER
|
||||
gdbregs.regs32[GdbPCIndex] = htobe((uint32_t)context->pcState().pc());
|
||||
gdbregs.regs32[GdbMSRIndex] = 0; // Is MSR modeled?
|
||||
gdbregs.regs32[GdbCRIndex] = htobe((uint32_t)context->readIntReg(INTREG_CR));
|
||||
gdbregs.regs32[GdbLRIndex] = htobe((uint32_t)context->readIntReg(INTREG_LR));
|
||||
gdbregs.regs32[GdbCTRIndex] = htobe((uint32_t)context->readIntReg(INTREG_CTR));
|
||||
gdbregs.regs32[GdbXERIndex] = htobe((uint32_t)context->readIntReg(INTREG_XER));
|
||||
}
|
||||
|
||||
/*
|
||||
* Translate the GDB register format into the kernel debugger register
|
||||
* format.
|
||||
*/
|
||||
void
|
||||
RemoteGDB::setregs()
|
||||
{
|
||||
DPRINTF(GDBAcc, "setregs in remotegdb \n");
|
||||
|
||||
// INTREG: R0~R31
|
||||
for (int i = 0; i < NumIntArchRegs; i++)
|
||||
context->setIntReg(i, betoh(gdbregs.regs32[GdbFirstGPRIndex + i]));
|
||||
|
||||
// FLOATREG: F0~F31
|
||||
for (int i = 0; i < NumFloatArchRegs; i++)
|
||||
context->setFloatRegBits(i, gdbregs.regs64[GdbFirstFPRIndex + i]);
|
||||
|
||||
// PC, MSR, CR, LR, CTR, XER
|
||||
context->pcState(betoh(gdbregs.regs32[GdbPCIndex]));
|
||||
// Is MSR modeled?
|
||||
context->setIntReg(INTREG_CR, betoh(gdbregs.regs32[GdbCRIndex]));
|
||||
context->setIntReg(INTREG_LR, betoh(gdbregs.regs32[GdbLRIndex]));
|
||||
context->setIntReg(INTREG_CTR, betoh(gdbregs.regs32[GdbCTRIndex]));
|
||||
context->setIntReg(INTREG_XER, betoh(gdbregs.regs32[GdbXERIndex]));
|
||||
}
|
||||
|
|
@ -32,39 +32,42 @@
|
|||
* Timothy M. Jones
|
||||
*/
|
||||
|
||||
#ifndef __ARCH_ARM_REMOTE_GDB_HH__
|
||||
#define __ARCH_ARM_REMOTE_GDB_HH__
|
||||
#ifndef __ARCH_POWER_REMOTE_GDB_HH__
|
||||
#define __ARCH_POWER_REMOTE_GDB_HH__
|
||||
|
||||
#include "arch/power/registers.hh"
|
||||
#include "arch/power/remote_gdb.hh"
|
||||
#include "base/remote_gdb.hh"
|
||||
|
||||
namespace PowerISA
|
||||
{
|
||||
|
||||
const int GDB_REG_BYTES =
|
||||
NumIntArchRegs * 4 +
|
||||
NumFloatArchRegs * 8 +
|
||||
4 + /* PC */
|
||||
4 + /* MSR */
|
||||
4 + /* CR */
|
||||
4 + /* LR */
|
||||
4 + /* CTR */
|
||||
4; /* XER */
|
||||
const int GdbFirstGPRIndex = 0;
|
||||
const int GdbFirstFPRIndex = 16;
|
||||
const int GdbPCIndex = 96;
|
||||
const int GdbMSRIndex = 97;
|
||||
const int GdbCRIndex = 98;
|
||||
const int GdbLRIndex = 99;
|
||||
const int GdbCTRIndex = 100;
|
||||
const int GdbXERIndex = 101;
|
||||
|
||||
class RemoteGDB : public BaseRemoteGDB
|
||||
{
|
||||
public:
|
||||
RemoteGDB(System *system, ThreadContext *context)
|
||||
: BaseRemoteGDB(system, context, 1)
|
||||
{
|
||||
}
|
||||
|
||||
bool
|
||||
acc(Addr, size_t)
|
||||
{
|
||||
panic("acc not implemented for POWER!");
|
||||
}
|
||||
|
||||
void
|
||||
getregs()
|
||||
{
|
||||
panic("getregs not implemented for POWER!");
|
||||
}
|
||||
|
||||
void
|
||||
setregs()
|
||||
{
|
||||
panic("setregs not implemented for POWER!");
|
||||
}
|
||||
RemoteGDB(System *_system, ThreadContext *tc);
|
||||
protected:
|
||||
bool acc(Addr addr, size_t len);
|
||||
void getregs();
|
||||
void setregs();
|
||||
};
|
||||
|
||||
} // namespace PowerISA
|
||||
|
|
|
|||
Loading…
Reference in a new issue