#define __REMOTE_GDB_HH__
#include <map>
+#include <sys/signal.h>
-#include "base/kgdb.h"
+#include "arch/types.hh"
#include "cpu/pc_event.hh"
#include "base/pollevent.hh"
#include "base/socket.hh"
class PhysicalMemory;
class GDBListener;
-class RemoteGDB
+
+enum GDBCommands
+{
+ GDBSignal = '?', // last signal
+ GDBSetBaud = 'b', // set baud (depracated)
+ GDBSetBreak = 'B', // set breakpoint (depracated)
+ GDBCont = 'c', // resume
+ GDBAsyncCont = 'C', // continue with signal
+ GDBDebug = 'd', // toggle debug flags (deprecated)
+ GDBDetach = 'D', // detach remote gdb
+ GDBRegR = 'g', // read general registers
+ GDBRegW = 'G', // write general registers
+ GDBSetThread = 'H', // set thread
+ GDBCycleStep = 'i', // step a single cycle
+ GDBSigCycleStep = 'I', // signal then cycle step
+ GDBKill = 'k', // kill program
+ GDBMemR = 'm', // read memory
+ GDBMemW = 'M', // write memory
+ GDBReadReg = 'p', // read register
+ GDBSetReg = 'P', // write register
+ GDBQueryVar = 'q', // query variable
+ GDBSetVar = 'Q', // set variable
+ GDBReset = 'r', // reset system. (Deprecated)
+ GDBStep = 's', // step
+ GDBAsyncStep = 'S', // signal and step
+ GDBThreadAlive = 'T', // find out if the thread is alive
+ GDBTargetExit = 'W', // target exited
+ GDBBinaryDload = 'X', // write memory
+ GDBClrHwBkpt = 'z', // remove breakpoint or watchpoint
+ GDBSetHwBkpt = 'Z' // insert breakpoint or watchpoint
+};
+
+const char GDBStart = '$';
+const char GDBEnd = '#';
+const char GDBGoodP = '+';
+const char GDBBadP = '-';
+
+const int GDBPacketBufLen = 1024;
+
+class BaseRemoteGDB
{
- protected:
- typedef TheISA::MachInst MachInst;
private:
friend void debugger();
friend class GDBListener;
+ //Helper functions
+ protected:
+ int digit2i(char);
+ char i2digit(int);
+ Addr hex2i(const char **);
+ //Address formats, break types, and gdb commands may change
+ //between architectures, so they're defined as virtual
+ //functions.
+ virtual void mem2hex(void *, const void *, int);
+ virtual const char * hex2mem(void *, const char *, int);
+ virtual const char * break_type(char c);
+ virtual const char * gdb_command(char cmd);
+
protected:
class Event : public PollEvent
{
protected:
- RemoteGDB *gdb;
+ BaseRemoteGDB *gdb;
public:
- Event(RemoteGDB *g, int fd, int e);
+ Event(BaseRemoteGDB *g, int fd, int e);
void process(int revent);
};
int number;
protected:
+ //The socket commands come in through
int fd;
- uint64_t gdbregs[KGDB_NUMREGS];
protected:
#ifdef notyet
PhysicalMemory *pmem;
ThreadContext *context;
+ protected:
+ class GdbRegCache
+ {
+ public:
+ GdbRegCache(size_t newSize) : regs(new uint64_t[newSize]), size(newSize)
+ {}
+ ~GdbRegCache()
+ {
+ delete [] regs;
+ }
+
+ uint64_t * regs;
+ size_t size;
+ size_t bytes() { return size * sizeof(uint64_t); }
+ };
+
+ GdbRegCache gdbregs;
+
protected:
uint8_t getbyte();
void putbyte(uint8_t b);
protected:
// Machine memory
- bool read(Addr addr, size_t size, char *data);
- bool write(Addr addr, size_t size, const char *data);
+ virtual bool read(Addr addr, size_t size, char *data);
+ virtual bool write(Addr addr, size_t size, const char *data);
template <class T> T read(Addr addr);
template <class T> void write(Addr addr, T data);
public:
- RemoteGDB(System *system, ThreadContext *context);
- ~RemoteGDB();
+ BaseRemoteGDB(System *system, ThreadContext *context, size_t cacheSize);
+ virtual ~BaseRemoteGDB();
void replaceThreadContext(ThreadContext *tc) { context = tc; }
void detach();
bool isattached();
- bool acc(Addr addr, size_t len);
- static int signal(int type);
+ virtual bool acc(Addr addr, size_t len) = 0;
bool trap(int type);
+ virtual bool breakpoint()
+ {
+ return trap(SIGTRAP);
+ }
protected:
- void getregs();
- void setregs();
+ virtual void getregs() = 0;
+ virtual void setregs() = 0;
- void clearSingleStep();
- void setSingleStep();
+ virtual void clearSingleStep() = 0;
+ virtual void setSingleStep() = 0;
PCEventQueue *getPcEventQueue();
class HardBreakpoint : public PCEvent
{
private:
- RemoteGDB *gdb;
+ BaseRemoteGDB *gdb;
public:
int refcount;
public:
- HardBreakpoint(RemoteGDB *_gdb, Addr addr);
+ HardBreakpoint(BaseRemoteGDB *_gdb, Addr addr);
std::string name() { return gdb->name() + ".hwbkpt"; }
virtual void process(ThreadContext *tc);
bool removeHardBreak(Addr addr, size_t len);
protected:
- struct TempBreakpoint {
- Addr address; // set here
- MachInst bkpt_inst; // saved instruction at bkpt
- int init_count; // number of times to skip bkpt
- int count; // current count
- };
-
- TempBreakpoint notTakenBkpt;
- TempBreakpoint takenBkpt;
-
- void clearTempBreakpoint(TempBreakpoint &bkpt);
- void setTempBreakpoint(TempBreakpoint &bkpt, Addr addr);
+ void clearTempBreakpoint(Addr &bkpt);
+ void setTempBreakpoint(Addr bkpt);
public:
std::string name();
template <class T>
inline T
-RemoteGDB::read(Addr addr)
+BaseRemoteGDB::read(Addr addr)
{
T temp;
read(addr, sizeof(T), (char *)&temp);
template <class T>
inline void
-RemoteGDB::write(Addr addr, T data)
+BaseRemoteGDB::write(Addr addr, T data)
{ write(addr, sizeof(T), (const char *)&data); }
class GDBListener
protected:
ListenSocket listener;
- RemoteGDB *gdb;
+ BaseRemoteGDB *gdb;
int port;
public:
- GDBListener(RemoteGDB *g, int p);
+ GDBListener(BaseRemoteGDB *g, int p);
~GDBListener();
void accept();
projects / gem5.git / blobdiff