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* i386-nlmstub.c (handle_exception): Point the PC at _exit() to

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kill the program being debugged.  KillMe(), the undocumented
  call intended for this purpose, causes the server to hang.
This commit is contained in:
J.T. Conklin 1994-08-05 16:14:03 +00:00
parent 284f4ee95b
commit d375ce178d
2 changed files with 30 additions and 15 deletions
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6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
Fri Aug 5 09:08:34 1994 J.T. Conklin (jtc@phishhead.cygnus.com)
* i386-nlmstub.c (handle_exception): Point the PC at _exit() to
kill the program being debugged. KillMe(), the undocumented
call intended for this purpose, causes the server to hang.
Thu Aug 4 16:26:06 1994 Steve Chamberlain (sac@jonny.cygnus.com)
* remote.c (read_frame): Calculate run length encoded checksum correctly.

39
gdb/i386-nlmstub.c
View File

@ -627,6 +627,7 @@ handle_exception (frame)
{
int addr, length;
char *ptr;
static int killed = 0;
static struct DBG_LoadDefinitionStructure *ldinfo = 0;
static unsigned char first_insn[BREAKPOINT_SIZE]; /* The first instruction in the program. */
@ -660,6 +661,17 @@ handle_exception (frame)
flush_i_cache ();
return RETURN_TO_PROGRAM;
case TERMINATE_NLM_EVENT:
if (!killed)
{
/* NetWare processes don't have an exit status so we
generate our own */
sprintf (remcomOutBuffer, "W%02x", 0);
putpacket(remcomOutBuffer);
}
ResumeThread (mainthread);
return RETURN_TO_PROGRAM;
case ENTER_DEBUGGER_EVENT:
case KEYBOARD_BREAK_EVENT:
/* Pass some events on to the next debugger, in case it will handle
@ -717,11 +729,6 @@ handle_exception (frame)
/* Random mem fault, report it */
do_status (remcomOutBuffer, frame);
break;
case TERMINATE_NLM_EVENT:
/* There is no way to get the exit status. */
sprintf (remcomOutBuffer, "W%02x", 0);
break; /* We generate our own status */
}
/* FIXME: How do we know that this exception has anything to do with
@ -734,12 +741,6 @@ handle_exception (frame)
if (! putpacket(remcomOutBuffer))
return RETURN_TO_NEXT_DEBUGGER;
if (frame->ExceptionNumber == TERMINATE_NLM_EVENT)
{
ResumeThread (mainthread);
return RETURN_TO_PROGRAM;
}
while (1)
{
error = 0;
@ -829,7 +830,7 @@ handle_exception (frame)
if (hexToInt(&ptr,&addr))
{
/* registers[PC_REGNUM].lo = addr;*/
fprintf (stderr, "Setting PC to 0x%x\n", addr);
ConsolePrintf("Setting PC to 0x%x\n", addr);
while (1);
}
@ -840,9 +841,17 @@ handle_exception (frame)
return RETURN_TO_PROGRAM;
case 'k':
/* kill the program */
KillMe (ldinfo);
ResumeThread (mainthread);
/* The undocumented netware call KillMe() is supposed to
schedule the NLM to be killed when it next blocks. What
really happens is that the server hangs as it tries to
unload the NLM.
So, since netware won't cooperate, we just point the PC
at the start of _exit() and continue, while noting that
we've killed the process. */
killed = 1;
frame->ExceptionPC = &_exit;
return RETURN_TO_PROGRAM;
case 'q': /* Query message */