/*
+ * Copyright 2015 LabWare
* Copyright 2014 Google, Inc.
* Copyright (c) 2002-2005 The Regents of The University of Michigan
* All rights reserved.
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
+ * Boris Shingarov
*/
/*
* "Stub" to allow remote cpu to debug over a serial line using gdb.
*/
-#include <signal.h>
+#include "arch/sparc/remote_gdb.hh"
+
#include <sys/signal.h>
#include <unistd.h>
+#include <csignal>
#include <string>
-#include "arch/sparc/remote_gdb.hh"
#include "arch/vtophys.hh"
#include "base/intmath.hh"
#include "base/remote_gdb.hh"
#include "base/trace.hh"
#include "cpu/static_inst.hh"
#include "cpu/thread_context.hh"
+#include "debug/GDBAcc.hh"
#include "debug/GDBRead.hh"
#include "mem/page_table.hh"
#include "mem/physical.hh"
using namespace std;
using namespace SparcISA;
-RemoteGDB::RemoteGDB(System *_system, ThreadContext *c)
- : BaseRemoteGDB(_system, c, NumGDBRegs * sizeof(uint64_t))
+RemoteGDB::RemoteGDB(System *_system, ThreadContext *c, int _port)
+ : BaseRemoteGDB(_system, c, _port), regCache32(this), regCache64(this)
{}
///////////////////////////////////////////////////////////
// from va to va + len have valid page map entries. Not
// sure how this will work for other OSes or in general.
if (FullSystem) {
- if (va)
- return true;
- return false;
+ return va != 0;
} else {
- TlbEntry entry;
// Check to make sure the first byte is mapped into the processes
// address space.
- if (context->getProcessPtr()->pTable->lookup(va, entry))
- return true;
- return false;
+ return context()->getProcessPtr()->pTable->lookup(va) != nullptr;
}
}
-///////////////////////////////////////////////////////////
-// RemoteGDB::getregs
-//
-// Translate the kernel debugger register format into
-// the GDB register format.
void
-RemoteGDB::getregs()
+RemoteGDB::SPARCGdbRegCache::getRegs(ThreadContext *context)
{
- memset(gdbregs.regs, 0, gdbregs.size);
-
+ DPRINTF(GDBAcc, "getRegs in remotegdb \n");
+ for (int i = 0; i < 32; i++) r.gpr[i] = htobe((uint32_t)context->readIntReg(i));
PCState pc = context->pcState();
+ r.pc = htobe((uint32_t)pc.pc());
+ r.npc = htobe((uint32_t)pc.npc());
+ r.y = htobe((uint32_t)context->readIntReg(NumIntArchRegs + 1));
PSTATE pstate = context->readMiscReg(MISCREG_PSTATE);
+ r.psr = htobe((uint32_t)pstate);
+ r.fsr = htobe((uint32_t)context->readMiscReg(MISCREG_FSR));
+ r.csr = htobe((uint32_t)context->readIntReg(NumIntArchRegs + 2));
+}
- if (pstate.am) {
- gdbregs.regs32[Reg32Pc] = htobe((uint32_t)pc.pc());
- gdbregs.regs32[Reg32Npc] = htobe((uint32_t)pc.npc());
- for (int x = RegG0; x <= RegI0 + 7; x++)
- gdbregs.regs32[x] = htobe((uint32_t)context->readIntReg(x - RegG0));
-
- gdbregs.regs32[Reg32Y] =
- htobe((uint32_t)context->readIntReg(NumIntArchRegs + 1));
- gdbregs.regs32[Reg32Psr] = htobe((uint32_t)pstate);
- gdbregs.regs32[Reg32Fsr] =
- htobe((uint32_t)context->readMiscReg(MISCREG_FSR));
- gdbregs.regs32[Reg32Csr] =
- htobe((uint32_t)context->readIntReg(NumIntArchRegs + 2));
- } else {
- gdbregs.regs64[RegPc] = htobe(pc.pc());
- gdbregs.regs64[RegNpc] = htobe(pc.npc());
- for (int x = RegG0; x <= RegI0 + 7; x++)
- gdbregs.regs64[x] = htobe(context->readIntReg(x - RegG0));
-
- gdbregs.regs64[RegFsr] = htobe(context->readMiscReg(MISCREG_FSR));
- gdbregs.regs64[RegFprs] = htobe(context->readMiscReg(MISCREG_FPRS));
- gdbregs.regs64[RegY] = htobe(context->readIntReg(NumIntArchRegs + 1));
- gdbregs.regs64[RegState] = htobe(
- context->readMiscReg(MISCREG_CWP) |
- pstate << 8 |
- context->readMiscReg(MISCREG_ASI) << 24 |
- context->readIntReg(NumIntArchRegs + 2) << 32);
- }
-
- DPRINTF(GDBRead, "PC=%#x\n", gdbregs.regs64[RegPc]);
+void
+RemoteGDB::SPARC64GdbRegCache::getRegs(ThreadContext *context)
+{
+ DPRINTF(GDBAcc, "getRegs in remotegdb \n");
+ for (int i = 0; i < 32; i++) r.gpr[i] = htobe(context->readIntReg(i));
+ for (int i = 0; i < 32; i++) r.fpr[i] = 0;
+ PCState pc = context->pcState();
+ r.pc = htobe(pc.pc());
+ r.npc = htobe(pc.npc());
+ r.fsr = htobe(context->readMiscReg(MISCREG_FSR));
+ r.fprs = htobe(context->readMiscReg(MISCREG_FPRS));
+ r.y = htobe(context->readIntReg(NumIntArchRegs + 1));
+ PSTATE pstate = context->readMiscReg(MISCREG_PSTATE);
+ r.state = htobe(
+ context->readMiscReg(MISCREG_CWP) |
+ pstate << 8 |
+ context->readMiscReg(MISCREG_ASI) << 24 |
+ context->readIntReg(NumIntArchRegs + 2) << 32);
+}
+void
+RemoteGDB::SPARCGdbRegCache::setRegs(ThreadContext *context) const
+{
+ for (int i = 0; i < 32; i++) context->setIntReg(i, r.gpr[i]);
+ PCState pc;
+ pc.pc(r.pc);
+ pc.npc(r.npc);
+ pc.nnpc(pc.npc() + sizeof(MachInst));
+ pc.upc(0);
+ pc.nupc(1);
+ context->pcState(pc);
// Floating point registers are left at 0 in netbsd
// All registers other than the pc, npc and int regs
// are ignored as well.
}
-///////////////////////////////////////////////////////////
-// RemoteGDB::setregs
-//
-// Translate the GDB register format into the kernel
-// debugger register format.
-//
void
-RemoteGDB::setregs()
+RemoteGDB::SPARC64GdbRegCache::setRegs(ThreadContext *context) const
{
+ for (int i = 0; i < 32; i++) context->setIntReg(i, r.gpr[i]);
PCState pc;
- pc.pc(gdbregs.regs64[RegPc]);
- pc.npc(gdbregs.regs64[RegNpc]);
+ pc.pc(r.pc);
+ pc.npc(r.npc);
pc.nnpc(pc.npc() + sizeof(MachInst));
pc.upc(0);
pc.nupc(1);
context->pcState(pc);
- for (int x = RegG0; x <= RegI0 + 7; x++)
- context->setIntReg(x - RegG0, gdbregs.regs64[x]);
- // Only the integer registers, pc and npc are set in netbsd
+ // Floating point registers are left at 0 in netbsd
+ // All registers other than the pc, npc and int regs
+ // are ignored as well.
+}
+
+
+BaseGdbRegCache*
+RemoteGDB::gdbRegs()
+{
+ PSTATE pstate = context()->readMiscReg(MISCREG_PSTATE);
+ if (pstate.am) {
+ return ®Cache32;
+ } else {
+ return ®Cache64;
+ }
}
projects / gem5.git / blobdiff