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-rw-r--r--src/arch/alpha/remote_gdb.cc137
-rw-r--r--src/arch/alpha/remote_gdb.hh60
-rw-r--r--src/arch/sparc/remote_gdb.cc222
-rw-r--r--src/arch/sparc/remote_gdb.hh80
-rw-r--r--src/base/remote_gdb.cc15
-rw-r--r--src/base/remote_gdb.hh4
6 files changed, 73 insertions, 445 deletions
diff --git a/src/arch/alpha/remote_gdb.cc b/src/arch/alpha/remote_gdb.cc
index 96c7ea6e2..829e41ca8 100644
--- a/src/arch/alpha/remote_gdb.cc
+++ b/src/arch/alpha/remote_gdb.cc
@@ -121,8 +121,9 @@
#include <string>
#include <unistd.h>
-#include "arch/vtophys.hh"
+#include "arch/alpha/kgdb.h"
#include "arch/alpha/remote_gdb.hh"
+#include "arch/vtophys.hh"
#include "base/intmath.hh"
#include "base/remote_gdb.hh"
#include "base/socket.hh"
@@ -135,30 +136,12 @@
#include "sim/system.hh"
using namespace std;
-using namespace AlphaISA;
-
-RemoteGDB::Event::Event(RemoteGDB *g, int fd, int e)
- : PollEvent(fd, e), gdb(g)
-{}
-
-void
-RemoteGDB::Event::process(int revent)
-{
- if (revent & POLLIN)
- gdb->trap(ALPHA_KENTRY_IF);
- else if (revent & POLLNVAL)
- gdb->detach();
-}
+using namespace TheISA;
RemoteGDB::RemoteGDB(System *_system, ThreadContext *c)
- : BaseRemoteGDB(_system, c, KGDB_NUMREGS),
- event(NULL)
-{}
-
-RemoteGDB::~RemoteGDB()
+ : BaseRemoteGDB(_system, c, KGDB_NUMREGS)
{
- if (event)
- delete event;
+ memset(gdbregs.regs, 0, gdbregs.size);
}
///////////////////////////////////////////////////////////
@@ -269,35 +252,15 @@ RemoteGDB::setregs()
}
void
-RemoteGDB::setTempBreakpoint(TempBreakpoint &bkpt, Addr addr)
-{
- DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n", addr);
-
- bkpt.address = addr;
- insertHardBreak(addr, 4);
-}
-
-void
-RemoteGDB::clearTempBreakpoint(TempBreakpoint &bkpt)
-{
- DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n",
- bkpt.address);
-
-
- removeHardBreak(bkpt.address, 4);
- bkpt.address = 0;
-}
-
-void
RemoteGDB::clearSingleStep()
{
DPRINTF(GDBMisc, "clearSingleStep bt_addr=%#x nt_addr=%#x\n",
- takenBkpt.address, notTakenBkpt.address);
+ takenBkpt, notTakenBkpt);
- if (takenBkpt.address != 0)
+ if (takenBkpt != 0)
clearTempBreakpoint(takenBkpt);
- if (notTakenBkpt.address != 0)
+ if (notTakenBkpt != 0)
clearTempBreakpoint(notTakenBkpt);
}
@@ -322,12 +285,12 @@ RemoteGDB::setSingleStep()
}
DPRINTF(GDBMisc, "setSingleStep bt_addr=%#x nt_addr=%#x\n",
- takenBkpt.address, notTakenBkpt.address);
+ takenBkpt, notTakenBkpt);
- setTempBreakpoint(notTakenBkpt, npc);
+ setTempBreakpoint(notTakenBkpt = npc);
if (set_bt)
- setTempBreakpoint(takenBkpt, bpc);
+ setTempBreakpoint(takenBkpt = bpc);
}
// Write bytes to kernel address space for debugger.
@@ -344,81 +307,3 @@ RemoteGDB::write(Addr vaddr, size_t size, const char *data)
}
}
-
-PCEventQueue *RemoteGDB::getPcEventQueue()
-{
- return &system->pcEventQueue;
-}
-
-
-RemoteGDB::HardBreakpoint::HardBreakpoint(RemoteGDB *_gdb, Addr pc)
- : PCEvent(_gdb->getPcEventQueue(), "HardBreakpoint Event", pc),
- gdb(_gdb), refcount(0)
-{
- DPRINTF(GDBMisc, "creating hardware breakpoint at %#x\n", evpc);
-}
-
-void
-RemoteGDB::HardBreakpoint::process(ThreadContext *tc)
-{
- DPRINTF(GDBMisc, "handling hardware breakpoint at %#x\n", pc());
-
- if (tc == gdb->context)
- gdb->trap(ALPHA_KENTRY_INT);
-}
-
-bool
-RemoteGDB::insertSoftBreak(Addr addr, size_t len)
-{
- if (len != sizeof(MachInst))
- panic("invalid length\n");
-
- return insertHardBreak(addr, len);
-}
-
-bool
-RemoteGDB::removeSoftBreak(Addr addr, size_t len)
-{
- if (len != sizeof(MachInst))
- panic("invalid length\n");
-
- return removeHardBreak(addr, len);
-}
-
-bool
-RemoteGDB::insertHardBreak(Addr addr, size_t len)
-{
- if (len != sizeof(MachInst))
- panic("invalid length\n");
-
- DPRINTF(GDBMisc, "inserting hardware breakpoint at %#x\n", addr);
-
- HardBreakpoint *&bkpt = hardBreakMap[addr];
- if (bkpt == 0)
- bkpt = new HardBreakpoint(this, addr);
-
- bkpt->refcount++;
-
- return true;
-}
-
-bool
-RemoteGDB::removeHardBreak(Addr addr, size_t len)
-{
- if (len != sizeof(MachInst))
- panic("invalid length\n");
-
- DPRINTF(GDBMisc, "removing hardware breakpoint at %#x\n", addr);
-
- break_iter_t i = hardBreakMap.find(addr);
- if (i == hardBreakMap.end())
- return false;
-
- HardBreakpoint *hbp = (*i).second;
- if (--hbp->refcount == 0) {
- delete hbp;
- hardBreakMap.erase(i);
- }
-
- return true;
-}
diff --git a/src/arch/alpha/remote_gdb.hh b/src/arch/alpha/remote_gdb.hh
index 1dd4ada38..7bef183c3 100644
--- a/src/arch/alpha/remote_gdb.hh
+++ b/src/arch/alpha/remote_gdb.hh
@@ -48,31 +48,12 @@ namespace AlphaISA
{
class RemoteGDB : public BaseRemoteGDB
{
- private:
- friend void debugger();
- friend class GDBListener;
-
- protected:
- class Event : public PollEvent
- {
- protected:
- RemoteGDB *gdb;
-
- public:
- Event(RemoteGDB *g, int fd, int e);
- void process(int revent);
- };
-
- friend class Event;
- Event *event;
-
protected:
// Machine memory
bool write(Addr addr, size_t size, const char *data);
public:
RemoteGDB(System *system, ThreadContext *context);
- ~RemoteGDB();
bool acc(Addr addr, size_t len);
@@ -83,47 +64,10 @@ namespace AlphaISA
void clearSingleStep();
void setSingleStep();
- PCEventQueue *getPcEventQueue();
-
- protected:
- class HardBreakpoint : public PCEvent
- {
- private:
- RemoteGDB *gdb;
-
- public:
- int refcount;
-
- public:
- HardBreakpoint(RemoteGDB *_gdb, Addr addr);
- std::string name() { return gdb->name() + ".hwbkpt"; }
-
- virtual void process(ThreadContext *tc);
- };
- friend class HardBreakpoint;
-
- typedef std::map<Addr, HardBreakpoint *> break_map_t;
- typedef break_map_t::iterator break_iter_t;
- break_map_t hardBreakMap;
-
- bool insertSoftBreak(Addr addr, size_t len);
- bool removeSoftBreak(Addr addr, size_t len);
- bool insertHardBreak(Addr addr, size_t len);
- 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);
+ Addr notTakenBkpt;
+ Addr takenBkpt;
};
}
diff --git a/src/arch/sparc/remote_gdb.cc b/src/arch/sparc/remote_gdb.cc
index 2e662af7f..5f9c532b8 100644
--- a/src/arch/sparc/remote_gdb.cc
+++ b/src/arch/sparc/remote_gdb.cc
@@ -124,7 +124,6 @@
#include "arch/vtophys.hh"
#include "arch/sparc/remote_gdb.hh"
#include "base/intmath.hh"
-#include "base/kgdb.h"
#include "base/remote_gdb.hh"
#include "base/socket.hh"
#include "base/trace.hh"
@@ -138,30 +137,10 @@
using namespace std;
using namespace TheISA;
-RemoteGDB::Event::Event(RemoteGDB *g, int fd, int e)
- : PollEvent(fd, e), gdb(g)
-{}
-
-void
-RemoteGDB::Event::process(int revent)
-{
- if (revent & POLLIN)
- gdb->trap(ALPHA_KENTRY_IF);
- else if (revent & POLLNVAL)
- gdb->detach();
-}
-
RemoteGDB::RemoteGDB(System *_system, ThreadContext *c)
- : BaseRemoteGDB(_system, c, KGDB_NUMREGS),
- event(NULL)
+ : BaseRemoteGDB(_system, c, NumGDBRegs)
{}
-RemoteGDB::~RemoteGDB()
-{
- if (event)
- delete event;
-}
-
///////////////////////////////////////////////////////////
// RemoteGDB::acc
//
@@ -170,6 +149,7 @@ RemoteGDB::~RemoteGDB()
bool
RemoteGDB::acc(Addr va, size_t len)
{
+#if 0
Addr last_va;
va = TheISA::TruncPage(va);
@@ -208,41 +188,11 @@ RemoteGDB::acc(Addr va, size_t len)
} while (va < last_va);
DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va);
+#endif
return true;
}
///////////////////////////////////////////////////////////
-// RemoteGDB::signal
-//
-// Translate a trap number into a Unix-compatible signal number.
-// (GDB only understands Unix signal numbers.)
-//
-int
-RemoteGDB::signal(int type)
-{
- switch (type) {
- case ALPHA_KENTRY_INT:
- return (SIGTRAP);
-
- case ALPHA_KENTRY_UNA:
- return (SIGBUS);
-
- case ALPHA_KENTRY_ARITH:
- return (SIGFPE);
-
- case ALPHA_KENTRY_IF:
- return (SIGILL);
-
- case ALPHA_KENTRY_MM:
- return (SIGSEGV);
-
- default:
- panic("unknown signal type");
- return 0;
- }
-}
-
-///////////////////////////////////////////////////////////
// RemoteGDB::getregs
//
// Translate the kernel debugger register format into
@@ -252,24 +202,14 @@ RemoteGDB::getregs()
{
memset(gdbregs.regs, 0, gdbregs.size);
- gdbregs.regs[KGDB_REG_PC] = context->readPC();
-
- // @todo: Currently this is very Alpha specific.
- if (AlphaISA::PcPAL(gdbregs.regs[KGDB_REG_PC])) {
- for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
- gdbregs.regs[i] = context->readIntReg(AlphaISA::reg_redir[i]);
- }
- } else {
- for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
- gdbregs.regs[i] = context->readIntReg(i);
- }
- }
-
-#ifdef KGDB_FP_REGS
- for (int i = 0; i < TheISA::NumFloatArchRegs; ++i) {
- gdbregs.regs[i + KGDB_REG_F0] = context->readFloatRegBits(i);
- }
-#endif
+ gdbregs.regs[RegPc] = context->readPC();
+ gdbregs.regs[RegNpc] = context->readNextPC();
+ for(int x = RegG0; x <= RegI7; x++)
+ gdbregs.regs[x] = context->readIntReg(x - RegG0);
+ for(int x = RegF0; x <= RegF31; x++)
+ gdbregs.regs[x] = context->readFloatRegBits(x - RegF0);
+ gdbregs.regs[RegY] = context->readMiscReg(MISCREG_Y);
+ //XXX need to also load up Psr, Wim, Tbr, Fpsr, and Cpsr
}
///////////////////////////////////////////////////////////
@@ -281,48 +221,20 @@ RemoteGDB::getregs()
void
RemoteGDB::setregs()
{
- // @todo: Currently this is very Alpha specific.
- if (AlphaISA::PcPAL(gdbregs.regs[KGDB_REG_PC])) {
- for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
- context->setIntReg(AlphaISA::reg_redir[i], gdbregs.regs[i]);
- }
- } else {
- for (int i = 0; i < TheISA::NumIntArchRegs; ++i) {
- context->setIntReg(i, gdbregs.regs[i]);
- }
- }
-
-#ifdef KGDB_FP_REGS
- for (int i = 0; i < TheISA::NumFloatArchRegs; ++i) {
- context->setFloatRegBits(i, gdbregs.regs[i + KGDB_REG_F0]);
- }
-#endif
- context->setPC(gdbregs.regs[KGDB_REG_PC]);
-}
-
-void
-RemoteGDB::setTempBreakpoint(TempBreakpoint &bkpt, Addr addr)
-{
- DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n", addr);
-
- bkpt.address = addr;
- insertHardBreak(addr, 4);
-}
-
-void
-RemoteGDB::clearTempBreakpoint(TempBreakpoint &bkpt)
-{
- DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n",
- bkpt.address);
-
-
- removeHardBreak(bkpt.address, 4);
- bkpt.address = 0;
+ context->setPC(gdbregs.regs[RegPc]);
+ context->setNextPC(gdbregs.regs[RegNpc]);
+ for(int x = RegG0; x <= RegI7; x++)
+ context->setIntReg(x - RegG0, gdbregs.regs[x]);
+ for(int x = RegF0; x <= RegF31; x++)
+ context->setFloatRegBits(x - RegF0, gdbregs.regs[x]);
+ context->setMiscRegWithEffect(MISCREG_Y, gdbregs.regs[RegY]);
+ //XXX need to also set Psr, Wim, Tbr, Fpsr, and Cpsr
}
void
RemoteGDB::clearSingleStep()
{
+#if 0
DPRINTF(GDBMisc, "clearSingleStep bt_addr=%#x nt_addr=%#x\n",
takenBkpt.address, notTakenBkpt.address);
@@ -331,11 +243,13 @@ RemoteGDB::clearSingleStep()
if (notTakenBkpt.address != 0)
clearTempBreakpoint(notTakenBkpt);
+#endif
}
void
RemoteGDB::setSingleStep()
{
+#if 0
Addr pc = context->readPC();
Addr npc, bpc;
bool set_bt = false;
@@ -360,97 +274,5 @@ RemoteGDB::setSingleStep()
if (set_bt)
setTempBreakpoint(takenBkpt, bpc);
-}
-
-// Write bytes to kernel address space for debugger.
-bool
-RemoteGDB::write(Addr vaddr, size_t size, const char *data)
-{
- if (BaseRemoteGDB::write(vaddr, size, data)) {
-#ifdef IMB
- alpha_pal_imb();
#endif
- return true;
- } else {
- return false;
- }
-}
-
-
-PCEventQueue *RemoteGDB::getPcEventQueue()
-{
- return &system->pcEventQueue;
-}
-
-
-RemoteGDB::HardBreakpoint::HardBreakpoint(RemoteGDB *_gdb, Addr pc)
- : PCEvent(_gdb->getPcEventQueue(), "HardBreakpoint Event", pc),
- gdb(_gdb), refcount(0)
-{
- DPRINTF(GDBMisc, "creating hardware breakpoint at %#x\n", evpc);
-}
-
-void
-RemoteGDB::HardBreakpoint::process(ThreadContext *tc)
-{
- DPRINTF(GDBMisc, "handling hardware breakpoint at %#x\n", pc());
-
- if (tc == gdb->context)
- gdb->trap(ALPHA_KENTRY_INT);
-}
-
-bool
-RemoteGDB::insertSoftBreak(Addr addr, size_t len)
-{
- if (len != sizeof(MachInst))
- panic("invalid length\n");
-
- return insertHardBreak(addr, len);
-}
-
-bool
-RemoteGDB::removeSoftBreak(Addr addr, size_t len)
-{
- if (len != sizeof(MachInst))
- panic("invalid length\n");
-
- return removeHardBreak(addr, len);
-}
-
-bool
-RemoteGDB::insertHardBreak(Addr addr, size_t len)
-{
- if (len != sizeof(MachInst))
- panic("invalid length\n");
-
- DPRINTF(GDBMisc, "inserting hardware breakpoint at %#x\n", addr);
-
- HardBreakpoint *&bkpt = hardBreakMap[addr];
- if (bkpt == 0)
- bkpt = new HardBreakpoint(this, addr);
-
- bkpt->refcount++;
-
- return true;
-}
-
-bool
-RemoteGDB::removeHardBreak(Addr addr, size_t len)
-{
- if (len != sizeof(MachInst))
- panic("invalid length\n");
-
- DPRINTF(GDBMisc, "removing hardware breakpoint at %#x\n", addr);
-
- break_iter_t i = hardBreakMap.find(addr);
- if (i == hardBreakMap.end())
- return false;
-
- HardBreakpoint *hbp = (*i).second;
- if (--hbp->refcount == 0) {
- delete hbp;
- hardBreakMap.erase(i);
- }
-
- return true;
}
diff --git a/src/arch/sparc/remote_gdb.hh b/src/arch/sparc/remote_gdb.hh
index 6ac4f296f..3ded1e218 100644
--- a/src/arch/sparc/remote_gdb.hh
+++ b/src/arch/sparc/remote_gdb.hh
@@ -46,34 +46,32 @@ namespace SparcISA
{
class RemoteGDB : public BaseRemoteGDB
{
- private:
- friend void debugger();
- friend class GDBListener;
-
protected:
- class Event : public PollEvent
+ enum RegisterConstants
{
- protected:
- RemoteGDB *gdb;
-
- public:
- Event(RemoteGDB *g, int fd, int e);
- void process(int revent);
+ RegG0, RegG1, RegG2, RegG3, RegG4, RegG5, RegG6, RegG7,
+ RegO0, RegO1, RegO2, RegO3, RegO4, RegO5, RegO6, RegO7,
+ RegL0, RegL1, RegL2, RegL3, RegL4, RegL5, RegL6, RegL7,
+ RegI0, RegI1, RegI2, RegI3, RegI4, RegI5, RegI6, RegI7,
+ RegF0, RegF1, RegF2, RegF3, RegF4, RegF5, RegF6, RegF7,
+ RegF8, RegF9, RegF10, RegF11, RegF12, RegF13, RegF14, RegF15,
+ RegF16, RegF17, RegF18, RegF19, RegF20, RegF21, RegF22, RegF23,
+ RegF24, RegF25, RegF26, RegF27, RegF28, RegF29, RegF30, RegF31,
+ RegY,
+ RegPsr,
+ RegWim,
+ RegTbr,
+ RegPc,
+ RegNpc,
+ RegFpsr,
+ RegCpsr,
+ NumGDBRegs
};
- friend class Event;
- Event *event;
-
- protected:
- // Machine memory
- bool write(Addr addr, size_t size, const char *data);
-
public:
RemoteGDB(System *system, ThreadContext *context);
- ~RemoteGDB();
bool acc(Addr addr, size_t len);
- int signal(int type);
protected:
void getregs();
@@ -82,47 +80,7 @@ namespace SparcISA
void clearSingleStep();
void setSingleStep();
- PCEventQueue *getPcEventQueue();
-
- protected:
- class HardBreakpoint : public PCEvent
- {
- private:
- RemoteGDB *gdb;
-
- public:
- int refcount;
-
- public:
- HardBreakpoint(RemoteGDB *_gdb, Addr addr);
- std::string name() { return gdb->name() + ".hwbkpt"; }
-
- virtual void process(ThreadContext *tc);
- };
- friend class HardBreakpoint;
-
- typedef std::map<Addr, HardBreakpoint *> break_map_t;
- typedef break_map_t::iterator break_iter_t;
- break_map_t hardBreakMap;
-
- bool insertSoftBreak(Addr addr, size_t len);
- bool removeSoftBreak(Addr addr, size_t len);
- bool insertHardBreak(Addr addr, size_t len);
- 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);
+ Addr singleStepBreaks[2];
};
}
diff --git a/src/base/remote_gdb.cc b/src/base/remote_gdb.cc
index 01166d46f..fae814904 100644
--- a/src/base/remote_gdb.cc
+++ b/src/base/remote_gdb.cc
@@ -571,6 +571,21 @@ BaseRemoteGDB::removeHardBreak(Addr addr, size_t len)
return true;
}
+void
+BaseRemoteGDB::setTempBreakpoint(Addr bkpt)
+{
+ DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n", bkpt);
+ insertHardBreak(bkpt, sizeof(TheISA::MachInst));
+}
+
+void
+BaseRemoteGDB::clearTempBreakpoint(Addr &bkpt)
+{
+ DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n", bkpt);
+ removeHardBreak(bkpt, sizeof(TheISA::MachInst));
+ bkpt = 0;
+}
+
const char *
BaseRemoteGDB::break_type(char c)
{
diff --git a/src/base/remote_gdb.hh b/src/base/remote_gdb.hh
index 65e4313eb..4a1754afd 100644
--- a/src/base/remote_gdb.hh
+++ b/src/base/remote_gdb.hh
@@ -212,6 +212,10 @@ class BaseRemoteGDB
bool insertHardBreak(Addr addr, size_t len);
bool removeHardBreak(Addr addr, size_t len);
+ protected:
+ void clearTempBreakpoint(Addr &bkpt);
+ void setTempBreakpoint(Addr bkpt);
+
public:
std::string name();
};
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