diff --git a/src/siglongjmp.c b/src/siglongjmp.c deleted file mode 100644 index 3f8c9e2a..00000000 --- a/src/siglongjmp.c +++ /dev/null @@ -1,160 +0,0 @@ -/* libunwind - a platform-independent unwind library - Copyright (C) 2003 Hewlett-Packard Co - Contributed by David Mosberger-Tang - -This file is part of libunwind. - -Permission is hereby granted, free of charge, to any person obtaining -a copy of this software and associated documentation files (the -"Software"), to deal in the Software without restriction, including -without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to -the following conditions: - -The above copyright notice and this permission notice shall be -included in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND -NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE -LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION -OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ - -#define UNW_LOCAL_ONLY - -#include -#include -#include -#include -#include - -#include "tdep.h" -#include "jmpbuf.h" - -#if UNW_TARGET_IA64 -# include "ia64/rse.h" -#endif - -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 (); - if (sp != wp[JB_SP]) - continue; - -#if UNW_TARGET_IA64 - { - unw_word_t bsp, pfs, sol; - - if (unw_get_reg (&c, UNW_IA64_BSP, &bsp) < 0 - || unw_get_reg (&c, UNW_IA64_AR_PFS, &pfs) < 0) - abort (); - - /* simulate the effect of "br.call sigsetjmp" on ar.bsp: */ - sol = (pfs >> 7) & 0x7f; - bsp = ia64_rse_skip_regs (bsp, sol); - - if (bsp != wp[JB_BSP]) - continue; - - if (unlikely (sol == 0)) - { - unw_word_t prev_sp; - unw_cursor_t tmp = c; - - /* The caller of {sig,}setjmp() cannot have a NULL-frame. - If we see a NULL-frame, we haven't reached the right - target yet. To have a NULL-frame, the number of locals - must be zero and the stack-frame must also be - empty. */ - - if (unw_step (&tmp) < 0) - abort (); - - if (unw_get_reg (&tmp, UNW_REG_SP, &prev_sp) < 0) - abort (); - - if (sp == prev_sp) - /* got a NULL-frame; keep looking... */ - continue; - } - } -#endif - - /* found the right frame: */ - - assert (UNW_NUM_EH_REGS >= 4 && _NSIG <= 16 * sizeof (unw_word_t)); - - /* default to continuation without sigprocmask() */ - cont = &_UI_longjmp_cont; - -#if UNW_TARGET_IA64 - /* On ia64 we cannot always call sigprocmask() at - _UI_siglongjmp_cont() because the signal may have switched - stacks and the old stack's register-backing store may have - overflown, leaving us no space to allocate the stacked - registers needed to call sigprocmask(). Fortunately, we can - just let unw_resume() (via sigreturn) take care of restoring - the signal-mask. That's faster anyhow. - - XXX We probably should do the analogous on all architectures. */ - if (((struct cursor *) &c)->sigcontext_addr) - { - /* let unw_resume() install the desired signal mask */ - struct cursor *cp = (struct cursor *) &c; - struct sigcontext *sc = (struct sigcontext *) cp->sigcontext_addr; - sigset_t current_mask; - void *mp; - - if (wp[JB_MASK_SAVED]) - mp = &wp[JB_MASK]; - else - { - if (sigprocmask (SIG_BLOCK, NULL, ¤t_mask) < 0) - abort (); - mp = ¤t_mask; - } - memcpy (&sc->sc_mask, mp, sizeof (sc->sc_mask)); - } - else -#endif - if (wp[JB_MASK_SAVED]) - { - /* sigmask was saved */ - 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) cont)) - abort (); - - unw_resume (&c); - - abort (); - } - while (unw_step (&c) >= 0); - - abort (); -}