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https://github.com/tobast/libunwind-eh_elf.git
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Fix missed merge on setjmp_i.h and siglongjmp.c.
This commit is contained in:
David Mosberger-Tang
parent
3c109eef98
commit
fd2fa63a6c
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@ -1,4 +1,3 @@
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<<<<<<< .merge_file_NH3KvZ
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2003-2005 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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@ -117,123 +116,3 @@ resume_restores_sigmask (unw_cursor_t *c, unw_word_t *wp)
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}
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#endif /* !UNW_TARGET_IA64 */
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=======
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2003-2005 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#if UNW_TARGET_IA64
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#include "tdep.h"
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#include "ia64/rse.h"
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static inline int
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bsp_match (unw_cursor_t *c, unw_word_t *wp)
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{
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unw_word_t bsp, pfs, sol;
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if (unw_get_reg (c, UNW_IA64_BSP, &bsp) < 0
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|| unw_get_reg (c, UNW_IA64_AR_PFS, &pfs) < 0)
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abort ();
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/* simulate the effect of "br.call sigsetjmp" on ar.bsp: */
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sol = (pfs >> 7) & 0x7f;
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bsp = rse_skip_regs (bsp, sol);
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if (bsp != wp[JB_BSP])
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return 0;
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if (unlikely (sol == 0))
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{
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unw_word_t sp, prev_sp;
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unw_cursor_t tmp = *c;
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/* The caller of {sig,}setjmp() cannot have a NULL-frame. If we
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see a NULL-frame, we haven't reached the right target yet.
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To have a NULL-frame, the number of locals must be zero and
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the stack-frame must also be empty. */
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if (unw_step (&tmp) < 0)
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abort ();
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if (unw_get_reg (&tmp, UNW_REG_SP, &sp) < 0
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|| unw_get_reg (&tmp, UNW_REG_SP, &prev_sp) < 0)
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abort ();
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if (sp == prev_sp)
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/* got a NULL-frame; keep looking... */
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return 0;
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}
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return 1;
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}
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/* On ia64 we cannot always call sigprocmask() at
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_UI_siglongjmp_cont() because the signal may have switched stacks
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and the old stack's register-backing store may have overflown,
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leaving us no space to allocate the stacked registers needed to
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call sigprocmask(). Fortunately, we can just let unw_resume() (via
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sigreturn) take care of restoring the signal-mask. That's faster
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anyhow. */
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static inline int
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resume_restores_sigmask (unw_cursor_t *c, unw_word_t *wp)
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{
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unw_word_t sc_addr = ((struct cursor *) c)->sigcontext_addr;
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struct sigcontext *sc = (struct sigcontext *) sc_addr;
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sigset_t current_mask;
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void *mp;
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if (!sc_addr)
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return 0;
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/* let unw_resume() install the desired signal mask */
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if (wp[JB_MASK_SAVED])
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mp = &wp[JB_MASK];
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else
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{
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if (sigprocmask (SIG_BLOCK, NULL, ¤t_mask) < 0)
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abort ();
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mp = ¤t_mask;
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}
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memcpy (&sc->sc_mask, mp, sizeof (sc->sc_mask));
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return 1;
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}
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#else /* !UNW_TARGET_IA64 */
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static inline int
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bsp_match (unw_cursor_t *c, unw_word_t *wp)
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{
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return 1;
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}
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static inline int
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resume_restores_sigmask (unw_cursor_t *c, unw_word_t *wp)
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{
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/* We may want to do this analogously as for ia64... */
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return 0;
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}
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#endif /* !UNW_TARGET_IA64 */
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>>>>>>> .merge_file_F6t3ZY
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@ -1,4 +1,3 @@
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<<<<<<< .merge_file_OTjtqa
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2003-2005 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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@ -93,103 +92,3 @@ siglongjmp (sigjmp_buf env, int val)
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abort ();
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}
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=======
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2003-2004 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
|
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distribute, sublicense, and/or sell copies of the Software, and to
|
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permit persons to whom the Software is furnished to do so, subject to
|
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the following conditions:
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|
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#define UNW_LOCAL_ONLY
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#include <assert.h>
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#include <libunwind.h>
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#include <setjmp.h>
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#include <signal.h>
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#include <stdlib.h>
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#include "tdep.h"
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#include "jmpbuf.h"
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#include "setjmp_i.h"
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void
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siglongjmp (sigjmp_buf env, int val)
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{
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unw_word_t *wp = (unw_word_t *) env;
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extern int _UI_siglongjmp_cont;
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extern int _UI_longjmp_cont;
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unw_context_t uc;
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unw_cursor_t c;
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unw_word_t sp;
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int *cont;
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if (unw_getcontext (&uc) < 0 || unw_init_local (&c, &uc) < 0)
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abort ();
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do
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{
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if (unw_get_reg (&c, UNW_REG_SP, &sp) < 0)
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abort ();
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if (sp != wp[JB_SP])
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continue;
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if (!bsp_match (&c, wp))
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continue;
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/* found the right frame: */
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/* default to resuming without restoring signal-mask */
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cont = &_UI_longjmp_cont;
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/* Order of evaluation is important here: if unw_resume()
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restores signal mask, we must set it up appropriately, even
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if wp[JB_MASK_SAVED] is FALSE. */
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if (!resume_restores_sigmask (&c, wp) && wp[JB_MASK_SAVED])
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{
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/* sigmask was saved */
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if (UNW_NUM_EH_REGS < 4 || _NSIG >= 16 * sizeof (unw_word_t))
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/* signal mask doesn't fit into EH arguments and we can't
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put it on the stack without overwriting something
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else... */
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abort ();
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else
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if (unw_set_reg (&c, UNW_REG_EH + 2, wp[JB_MASK]) < 0
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|| (_NSIG > 8 * sizeof (unw_word_t)
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&& unw_set_reg (&c, UNW_REG_EH + 3, wp[JB_MASK + 1]) < 0))
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abort ();
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cont = &_UI_siglongjmp_cont;
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}
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if (unw_set_reg (&c, UNW_REG_EH + 0, wp[JB_RP]) < 0
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|| unw_set_reg (&c, UNW_REG_EH + 1, val) < 0
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|| unw_set_reg (&c, UNW_REG_IP, (unw_word_t) cont))
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abort ();
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unw_resume (&c);
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abort ();
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}
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while (unw_step (&c) >= 0);
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abort ();
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}
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>>>>>>> .merge_file_qE75m7
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