Include "libunwind_i.h" instead of "tdep.h".

Include "tdep-ia64/rse.h" instead of "ia64/rse.h".

(Logical change 1.294)

src/setjmp/setjmp_i.h

@@ -0,0 +1,118 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2003-2005 Hewlett-Packard Co
+	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+
+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.  */
+
+#if UNW_TARGET_IA64
+
+#include "libunwind_i.h"
+#include "tdep-ia64/rse.h"
+
+static inline int
+bsp_match (unw_cursor_t *c, unw_word_t *wp)
+{
+  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 = rse_skip_regs (bsp, sol);
+
+  if (bsp != wp[JB_BSP])
+    return 0;
+
+  if (unlikely (sol == 0))
+    {
+      unw_word_t sp, 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, &sp) < 0
+	  || unw_get_reg (&tmp, UNW_REG_SP, &prev_sp) < 0)
+	abort ();
+
+      if (sp == prev_sp)
+	/* got a NULL-frame; keep looking... */
+	return 0;
+    }
+  return 1;
+}
+
+/* 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.  */
+static inline int
+resume_restores_sigmask (unw_cursor_t *c, unw_word_t *wp)
+{
+  unw_word_t sc_addr = ((struct cursor *) c)->sigcontext_addr;
+  struct sigcontext *sc = (struct sigcontext *) sc_addr;
+  sigset_t current_mask;
+  void *mp;
+
+  if (!sc_addr)
+    return 0;
+
+  /* let unw_resume() install the desired signal mask */
+
+  if (wp[JB_MASK_SAVED])
+    mp = &wp[JB_MASK];
+  else
+    {
+      if (sigprocmask (SIG_BLOCK, NULL, &current_mask) < 0)
+	abort ();
+      mp = &current_mask;
+    }
+  memcpy (&sc->sc_mask, mp, sizeof (sc->sc_mask));
+  return 1;
+}
+
+#else /* !UNW_TARGET_IA64 */
+
+static inline int
+bsp_match (unw_cursor_t *c, unw_word_t *wp)
+{
+  return 1;
+}
+
+static inline int
+resume_restores_sigmask (unw_cursor_t *c, unw_word_t *wp)
+{
+  /* We may want to do this analogously as for ia64... */
+  return 0;
+}
+
+#endif /* !UNW_TARGET_IA64 */