diff options
| author | neal <neal> | 2007-11-27 12:37:05 +0000 |
|---|---|---|
| committer | neal <neal> | 2007-11-27 12:37:05 +0000 |
| commit | c744a56f1aad390e22ff14b21eb8d1a259ac861c (patch) | |
| tree | df1d2ac7fc5a1b24abdba7f52a0f7fb80925f1bf /libhurd-mm/exceptions.c | |
| parent | 14f2c474ec9f32f493f6ec0b7e5bb2ca03ba8e0f (diff) | |
2007-11-27 Neal H. Walfield <neal@gnu.org>
* exceptions.c (exception_handler_init): Use
_L4_exchange_registers rather than l4_start_sp_ip to be able to
detect errors.
Diffstat (limited to 'libhurd-mm/exceptions.c')
| -rw-r--r-- | libhurd-mm/exceptions.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/libhurd-mm/exceptions.c b/libhurd-mm/exceptions.c index 94f46c2..bb74ccf 100644 --- a/libhurd-mm/exceptions.c +++ b/libhurd-mm/exceptions.c @@ -131,6 +131,21 @@ exception_handler_init (void) downward. */ char *sp = (char *) stack + STACK_SIZE; + debug (5, "Starting exception thread"); + l4_thread_id_t tid = hurd_exception_thread (l4_myself ()); - l4_start_sp_ip (tid, (l4_word_t) sp, (l4_word_t) &exception_handler_loop); + l4_word_t control = _L4_XCHG_REGS_SET_HALT | _L4_XCHG_REGS_SET_SP + | _L4_XCHG_REGS_SET_IP | _L4_XCHG_REGS_CANCEL_IPC; + l4_word_t dummy = 0; + l4_word_t ip = exception_handler_loop; + _L4_exchange_registers (&tid, &control, &sp, &ip, + &dummy, &dummy, &dummy); + if (tid == l4_nilthread) + { + int err = l4_error_code (); + panic ("Error starting exception thread %x.%x: %s (%d)", + l4_thread_no (hurd_exception_thread (l4_myself ())), + l4_version (hurd_exception_thread (l4_myself ())), + l4_strerror (err), err); + } } |