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Diffstat (limited to 'base/remote_gdb.cc')
-rw-r--r--base/remote_gdb.cc124
1 files changed, 67 insertions, 57 deletions
diff --git a/base/remote_gdb.cc b/base/remote_gdb.cc
index 35a90073a..e701b5a01 100644
--- a/base/remote_gdb.cc
+++ b/base/remote_gdb.cc
@@ -171,11 +171,17 @@ GDBListener::~GDBListener()
delete event;
}
+string
+GDBListener::name()
+{
+ return gdb->name() + ".listener";
+}
+
void
GDBListener::listen()
{
while (!listener.listen(port, true)) {
- DPRINTF(RGDB, "GDBListener(listen): Can't bind port %d\n", port);
+ DPRINTF(GDBMisc, "Can't bind port %d\n", port);
port++;
}
@@ -188,7 +194,7 @@ void
GDBListener::accept()
{
if (!listener.islistening())
- panic("GDBListener(accept): cannot accept a connection if we're not listening!");
+ panic("GDBListener::accept(): cannot accept if we're not listening!");
int sfd = listener.accept(true);
@@ -216,7 +222,12 @@ RemoteGDB::Event::Event(RemoteGDB *g, int fd, int e)
void
RemoteGDB::Event::process(int revent)
-{ gdb->trap(ALPHA_KENTRY_IF); }
+{
+ if (revent & POLLIN)
+ gdb->trap(ALPHA_KENTRY_IF);
+ else if (revent & POLLNVAL)
+ gdb->detach();
+}
RemoteGDB::RemoteGDB(System *_system, ExecContext *c)
: event(NULL), fd(-1), active(false), attached(false),
@@ -231,6 +242,12 @@ RemoteGDB::~RemoteGDB()
delete event;
}
+string
+RemoteGDB::name()
+{
+ return system->name() + ".remote_gdb";
+}
+
bool
RemoteGDB::isattached()
{ return attached; }
@@ -316,17 +333,17 @@ RemoteGDB::acc(Addr va, size_t len)
do {
if (va < ALPHA_K0SEG_BASE) {
- DPRINTF(RGDB, "RGDB(acc): Mapping is invalid %#x < K0SEG\n", va);
+ DPRINTF(GDBAcc, "acc: Mapping is invalid %#x < K0SEG\n", va);
return false;
}
if (va < ALPHA_K1SEG_BASE) {
if (va < (ALPHA_K0SEG_BASE + pmem->getSize())) {
- DPRINTF(RGDB, "RGDB(acc): Mapping is valid K0SEG <= "
+ DPRINTF(GDBAcc, "acc: Mapping is valid K0SEG <= "
"%#x < K0SEG + size\n", va);
return true;
} else {
- DPRINTF(RGDB, "RGDB(acc): Mapping is invalid %#x < K0SEG\n",
+ DPRINTF(GDBAcc, "acc: Mapping is invalid %#x < K0SEG\n",
va);
return false;
}
@@ -335,13 +352,13 @@ RemoteGDB::acc(Addr va, size_t len)
Addr ptbr = context->regs.ipr[AlphaISA::IPR_PALtemp20];
pte = kernel_pte_lookup(pmem, ptbr, va);
if (!pte || !entry_valid(pmem->phys_read_qword(pte))) {
- DPRINTF(RGDB, "RGDB(acc): %#x pte is invalid\n", va);
+ DPRINTF(GDBAcc, "acc: %#x pte is invalid\n", va);
return false;
}
va += ALPHA_PGBYTES;
} while (va < last_va);
- DPRINTF(RGDB, "RGDB(acc): %#x mapping is valid\n", va);
+ DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va);
return true;
}
@@ -355,6 +372,9 @@ int
RemoteGDB::signal(int type)
{
switch (type) {
+ case ALPHA_KENTRY_INT:
+ return (SIGTRAP);
+
case ALPHA_KENTRY_UNA:
return (SIGBUS);
@@ -399,7 +419,8 @@ RemoteGDB::getregs()
void
RemoteGDB::setregs()
{
- memcpy(context->regs.intRegFile, &gdbregs[KGDB_REG_V0], 32 * sizeof(uint64_t));
+ memcpy(context->regs.intRegFile, &gdbregs[KGDB_REG_V0],
+ 32 * sizeof(uint64_t));
#ifdef KGDB_FP_REGS
memcpy(context->regs.floatRegFile.q, &gdbregs[KGDB_REG_F0],
32 * sizeof(uint64_t));
@@ -410,7 +431,7 @@ RemoteGDB::setregs()
void
RemoteGDB::setTempBreakpoint(TempBreakpoint &bkpt, Addr addr)
{
- DPRINTF(RGDB, "RGDB(setTempBreakpoint): addr=%#x\n", addr);
+ DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n", addr);
bkpt.address = addr;
insertHardBreak(addr, 4);
@@ -419,7 +440,7 @@ RemoteGDB::setTempBreakpoint(TempBreakpoint &bkpt, Addr addr)
void
RemoteGDB::clearTempBreakpoint(TempBreakpoint &bkpt)
{
- DPRINTF(RGDB, "RGDB(setTempBreakpoint): addr=%#x\n",
+ DPRINTF(GDBMisc, "setTempBreakpoint: addr=%#x\n",
bkpt.address);
@@ -430,7 +451,7 @@ RemoteGDB::clearTempBreakpoint(TempBreakpoint &bkpt)
void
RemoteGDB::clearSingleStep()
{
- DPRINTF(RGDB, "clearSingleStep bt_addr=%#x nt_addr=%#x\n",
+ DPRINTF(GDBMisc, "clearSingleStep bt_addr=%#x nt_addr=%#x\n",
takenBkpt.address, notTakenBkpt.address);
if (takenBkpt.address != 0)
@@ -460,7 +481,7 @@ RemoteGDB::setSingleStep()
set_bt = true;
}
- DPRINTF(RGDB, "setSingleStep bt_addr=%#x nt_addr=%#x\n",
+ DPRINTF(GDBMisc, "setSingleStep bt_addr=%#x nt_addr=%#x\n",
takenBkpt.address, notTakenBkpt.address);
setTempBreakpoint(notTakenBkpt, npc);
@@ -494,7 +515,7 @@ RemoteGDB::send(const char *bp)
const char *p;
uint8_t csum, c;
-// DPRINTF(RGDB, "RGDB(send): %s\n", bp);
+ DPRINTF(GDBSend, "send: %s\n", bp);
do {
p = bp;
@@ -554,7 +575,7 @@ RemoteGDB::recv(char *bp, int maxlen)
putbyte(KGDB_BADP);
} while (1);
-// DPRINTF(RGDB, "RGDB(recv): %s: %s\n", gdb_command(*bp), bp);
+ DPRINTF(GDBRecv, "recv: %s: %s\n", gdb_command(*bp), bp);
return (len);
}
@@ -569,11 +590,11 @@ RemoteGDB::read(Addr vaddr, size_t size, char *data)
uint8_t *maddr;
if (vaddr < 10) {
- DPRINTF(RGDB, "\nRGDB(read): reading memory location zero!\n");
+ DPRINTF(GDBRead, "read: reading memory location zero!\n");
vaddr = lastaddr + lastsize;
}
- DPRINTF(RGDB, "RGDB(read): addr=%#x, size=%d", vaddr, size);
+ DPRINTF(GDBRead, "read: addr=%#x, size=%d", vaddr, size);
#if TRACING_ON
char *d = data;
size_t s = size;
@@ -607,10 +628,13 @@ RemoteGDB::read(Addr vaddr, size_t size, char *data)
}
#if TRACING_ON
- if (DTRACE(RGDB)) {
- char buf[1024];
- mem2hex(buf, d, s);
- cprintf(": %s\n", buf);
+ if (DTRACE(GDBRead)) {
+ if (DTRACE(GDBExtra)) {
+ char buf[1024];
+ mem2hex(buf, d, s);
+ DPRINTFNR(": %s\n", buf);
+ } else
+ DPRINTFNR("\n");
}
#endif
@@ -627,14 +651,18 @@ RemoteGDB::write(Addr vaddr, size_t size, const char *data)
uint8_t *maddr;
if (vaddr < 10) {
- DPRINTF(RGDB, "RGDB(write): writing memory location zero!\n");
+ DPRINTF(GDBWrite, "write: writing memory location zero!\n");
vaddr = lastaddr + lastsize;
}
- if (DTRACE(RGDB)) {
- char buf[1024];
- mem2hex(buf, data, size);
- cprintf("RGDB(write): addr=%#x, size=%d: %s\n", vaddr, size, buf);
+ if (DTRACE(GDBWrite)) {
+ DPRINTFN("write: addr=%#x, size=%d", vaddr, size);
+ if (DTRACE(GDBExtra)) {
+ char buf[1024];
+ mem2hex(buf, data, size);
+ DPRINTFNR(": %s\n", buf);
+ } else
+ DPRINTFNR("\n");
}
lastaddr = vaddr;
@@ -682,17 +710,17 @@ RemoteGDB::HardBreakpoint::HardBreakpoint(RemoteGDB *_gdb, Addr pc)
: PCEvent(_gdb->getPcEventQueue(), "HardBreakpoint Event", pc),
gdb(_gdb), refcount(0)
{
- DPRINTF(RGDB, "creating hardware breakpoint at %#x\n", evpc);
+ DPRINTF(GDBMisc, "creating hardware breakpoint at %#x\n", evpc);
schedule();
}
void
RemoteGDB::HardBreakpoint::process(ExecContext *xc)
{
- DPRINTF(RGDB, "handling hardware breakpoint at %#x\n", pc());
+ DPRINTF(GDBMisc, "handling hardware breakpoint at %#x\n", pc());
if (xc == gdb->context)
- gdb->trap(ALPHA_KENTRY_IF);
+ gdb->trap(ALPHA_KENTRY_INT);
}
bool
@@ -719,7 +747,7 @@ RemoteGDB::insertHardBreak(Addr addr, size_t len)
if (len != sizeof(MachInst))
panic("invalid length\n");
- DPRINTF(RGDB, "inserting hardware breakpoint at %#x\n", addr);
+ DPRINTF(GDBMisc, "inserting hardware breakpoint at %#x\n", addr);
HardBreakpoint *&bkpt = hardBreakMap[addr];
if (bkpt == 0)
@@ -728,19 +756,6 @@ RemoteGDB::insertHardBreak(Addr addr, size_t len)
bkpt->refcount++;
return true;
-
-#if 0
- break_iter_t i = hardBreakMap.find(addr);
- if (i == hardBreakMap.end()) {
- HardBreakpoint *bkpt = new HardBreakpoint(this, addr);
- hardBreakMap[addr] = bkpt;
- i = hardBreakMap.insert(make_pair(addr, bkpt));
- if (i == hardBreakMap.end())
- return false;
- }
-
- (*i).second->refcount++;
-#endif
}
bool
@@ -749,7 +764,7 @@ RemoteGDB::removeHardBreak(Addr addr, size_t len)
if (len != sizeof(MachInst))
panic("invalid length\n");
- DPRINTF(RGDB, "removing hardware breakpoint at %#x\n", addr);
+ DPRINTF(GDBMisc, "removing hardware breakpoint at %#x\n", addr);
break_iter_t i = hardBreakMap.find(addr);
if (i == hardBreakMap.end())
@@ -798,7 +813,7 @@ RemoteGDB::trap(int type)
if (!attached)
return false;
- DPRINTF(RGDB, "RGDB(trap): PC=%#x NPC=%#x\n",
+ DPRINTF(GDBMisc, "trap: PC=%#x NPC=%#x\n",
context->regs.pc, context->regs.npc);
clearSingleStep();
@@ -813,17 +828,12 @@ RemoteGDB::trap(int type)
* After the debugger is "active" (connected) it will be
* waiting for a "signaled" message from us.
*/
- if (!active) {
- if (!IS_BREAKPOINT_TRAP(type, 0)) {
- // No debugger active -- let trap handle this.
- return false;
- }
+ if (!active)
active = true;
- } else {
+ else
// Tell remote host that an exception has occurred.
sprintf((char *)buffer, "S%02x", signal(type));
send(buffer);
- }
// Stick frame regs into our reg cache.
getregs();
@@ -1000,7 +1010,7 @@ RemoteGDB::trap(int type)
if (*p++ != ',') send("E0D");
len = hex2i(&p);
- DPRINTF(RGDB, "kgdb: clear %s, addr=%#x, len=%d\n",
+ DPRINTF(GDBMisc, "clear %s, addr=%#x, len=%d\n",
break_type(subcmd), val, len);
ret = false;
@@ -1032,7 +1042,7 @@ RemoteGDB::trap(int type)
if (*p++ != ',') send("E0D");
len = hex2i(&p);
- DPRINTF(RGDB, "kgdb: set %s, addr=%#x, len=%d\n",
+ DPRINTF(GDBMisc, "set %s, addr=%#x, len=%d\n",
break_type(subcmd), val, len);
ret = false;
@@ -1077,15 +1087,15 @@ RemoteGDB::trap(int type)
case KGDB_TARGET_EXIT:
case KGDB_BINARY_DLOAD:
// Unsupported command
- DPRINTF(RGDB, "kgdb: Unsupported command: %s\n",
+ DPRINTF(GDBMisc, "Unsupported command: %s\n",
gdb_command(command));
- DDUMP(RGDB, (uint8_t *)data, datalen);
+ DDUMP(GDBMisc, (uint8_t *)data, datalen);
send("");
continue;
default:
// Unknown command.
- DPRINTF(RGDB, "kgdb: Unknown command: %c(%#x)\n",
+ DPRINTF(GDBMisc, "Unknown command: %c(%#x)\n",
command, command);
send("");
continue;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 09:44:10 +0000