void
_longjmp (jmp_buf env, int val)
{
extern int _UI_longjmp_cont;
unw_context_t uc;
unw_cursor_t c;
unw_word_t sp;
unw_word_t *wp = (unw_word_t *) env;
if (unw_getcontext (&uc) < 0 || unw_init_local (&c, &uc) < 0)
abort ();
do
{
if (unw_get_reg (&c, UNW_REG_SP, &sp) < 0)
abort ();
#ifdef __FreeBSD__
if (sp != wp[JB_SP] + sizeof(unw_word_t))
#else
if (sp != wp[JB_SP])
#endif
continue;
if (!bsp_match (&c, wp))
continue;
/* found the right frame: */
assert (UNW_NUM_EH_REGS >= 2);
if (unw_set_reg (&c, UNW_REG_EH + 0, wp[JB_RP]) < 0
|| unw_set_reg (&c, UNW_REG_EH + 1, val) < 0
|| unw_set_reg (&c, UNW_REG_IP,
(unw_word_t) (uintptr_t) &_UI_longjmp_cont))
abort ();
unw_resume (&c);
abort ();
}
while (unw_step (&c) > 0);
abort ();
}
void
siglongjmp (sigjmp_buf env, int val)
{
unw_word_t *wp = (unw_word_t *) env;
extern int _UI_siglongjmp_cont;
extern int _UI_longjmp_cont;
unw_context_t uc;
unw_cursor_t c;
unw_word_t sp;
int *cont;
if (unw_getcontext (&uc) < 0 || unw_init_local (&c, &uc) < 0)
abort ();
do
{
if (unw_get_reg (&c, UNW_REG_SP, &sp) < 0)
abort ();
#ifdef __FreeBSD__
if (sp != wp[JB_SP] + sizeof(unw_word_t))
#else
if (sp != wp[JB_SP])
#endif
continue;
if (!bsp_match (&c, wp))
continue;
/* found the right frame: */
/* default to resuming without restoring signal-mask */
cont = &_UI_longjmp_cont;
/* Order of evaluation is important here: if unw_resume()
restores signal mask, we must set it up appropriately, even
if wp[JB_MASK_SAVED] is FALSE. */
if (!resume_restores_sigmask (&c, wp) && wp[JB_MASK_SAVED])
{
/* sigmask was saved */
if (UNW_NUM_EH_REGS < 4 || _NSIG >= 16 * sizeof (unw_word_t))
/* signal mask doesn't fit into EH arguments and we can't
put it on the stack without overwriting something
else... */
abort ();
else
if (unw_set_reg (&c, UNW_REG_EH + 2, wp[JB_MASK]) < 0
|| (_NSIG > 8 * sizeof (unw_word_t)
&& unw_set_reg (&c, UNW_REG_EH + 3, wp[JB_MASK + 1]) < 0))
abort ();
cont = &_UI_siglongjmp_cont;
}
if (unw_set_reg (&c, UNW_REG_EH + 0, wp[JB_RP]) < 0
|| unw_set_reg (&c, UNW_REG_EH + 1, val) < 0
|| unw_set_reg (&c, UNW_REG_IP, (unw_word_t) (uintptr_t) cont))
abort ();
unw_resume (&c);
abort ();
}
while (unw_step (&c) > 0);
abort ();
}
