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| author | Mark Kettenis <kettenis@gnu.org> | 2000-03-11 00:34:50 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@gnu.org> | 2000-03-11 00:34:50 +0000 |
| commit | fb5577443ef8662b8045032248efe280cf4fe68e (patch) | |
| tree | 6dfe9dc4eed9602c09282d23b55a7ff15bce5b23 /gdb/i386gnu-nat.c | |
| parent | 042c8311c7af7f75a0508992403372917ed0acee (diff) | |
| download | gdb-fb5577443ef8662b8045032248efe280cf4fe68e.zip gdb-fb5577443ef8662b8045032248efe280cf4fe68e.tar.gz gdb-fb5577443ef8662b8045032248efe280cf4fe68e.tar.bz2 | |
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.
Diffstat (limited to 'gdb/i386gnu-nat.c')
| -rw-r--r-- | gdb/i386gnu-nat.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gdb/i386gnu-nat.c b/gdb/i386gnu-nat.c index bc13229..7554d1a 100644 --- a/gdb/i386gnu-nat.c +++ b/gdb/i386gnu-nat.c @@ -1,5 +1,5 @@ /* 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. @@ -265,6 +265,7 @@ gnu_store_registers (int regno) thread_state_data_t old_state; int was_aborted = thread->aborted; int was_valid = thread->state_valid; + int trace; if (!was_aborted && was_valid) memcpy (&old_state, &thread->state, sizeof (old_state)); @@ -276,6 +277,10 @@ gnu_store_registers (int regno) 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) /* See which registers have changed after aborting the thread. */ { @@ -319,6 +324,10 @@ gnu_store_registers (int regno) assert (register_valid[regno]); fill (state, regno); } + + /* Restore the T bit. */ + ((struct i386_thread_state *)state)->efl &= ~0x100; + ((struct i386_thread_state *)state)->efl |= trace; } #undef fill |