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2000-03-11 Mark Kettenis <kettenis@gnu.org>

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* i386gnu-nat.c (gnu_store_registers): Make sure the T bit in the
	%eflags isn't modified.  This fixes a bug where every call to a
	function in the program beyond the first call would fail.
This commit is contained in:
Mark Kettenis
2000-03-11 00:34:50 +00:00
parent 042c8311c7
commit fb5577443e
2 changed files with 16 additions and 1 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2000-03-11 Mark Kettenis <kettenis@gnu.org>
* i386gnu-nat.c (gnu_store_registers): Make sure the T bit in the
%eflags isn't modified. This fixes a bug where every call to a
function in the program beyond the first call would fail.
2000-03-10 Daniel Berlin <dan@cgsoftware.com> 2000-03-10 Daniel Berlin <dan@cgsoftware.com>
Fix C++ overloading, add support for seeing through references. Fix C++ overloading, add support for seeing through references.

11
gdb/i386gnu-nat.c
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@ -1,5 +1,5 @@
/* Low level interface to i386 running the GNU Hurd. /* Low level interface to i386 running the GNU Hurd.
Copyright (C) 1992, 1995, 1996 Free Software Foundation, Inc. Copyright (C) 1992, 1995, 1996, 2000 Free Software Foundation, Inc.
This file is part of GDB. This file is part of GDB.
@ -265,6 +265,7 @@ gnu_store_registers (int regno)
thread_state_data_t old_state; thread_state_data_t old_state;
int was_aborted = thread->aborted; int was_aborted = thread->aborted;
int was_valid = thread->state_valid; int was_valid = thread->state_valid;
int trace;
if (!was_aborted && was_valid) if (!was_aborted && was_valid)
memcpy (&old_state, &thread->state, sizeof (old_state)); memcpy (&old_state, &thread->state, sizeof (old_state));
@ -276,6 +277,10 @@ gnu_store_registers (int regno)
return; return;
} }
/* Save the T bit. We might try to restore the %eflags register
below, but changing the T bit would seriously confuse GDB. */
trace = ((struct i386_thread_state *)state)->efl & 0x100;
if (!was_aborted && was_valid) if (!was_aborted && was_valid)
/* See which registers have changed after aborting the thread. */ /* See which registers have changed after aborting the thread. */
{ {
@ -319,6 +324,10 @@ gnu_store_registers (int regno)
assert (register_valid[regno]); assert (register_valid[regno]);
fill (state, regno); fill (state, regno);
} }
/* Restore the T bit. */
((struct i386_thread_state *)state)->efl &= ~0x100;
((struct i386_thread_state *)state)->efl |= trace;
} }
#undef fill #undef fill