From acf90b1f82efaef45ed3cce2d3e565582f764579 Mon Sep 17 00:00:00 2001
From: "mostang.com!davidm" <mostang.com!davidm>
Date: Tue, 3 May 2005 09:13:17 +0000
Subject: [PATCH] Include "setjmp_i.h". Abstract ia64-specific code into
 bsp_match() and resume_restores_sigmask() routines.

2004/12/06 01:33:01-08:00 mostang.com!davidm
Rename: src/siglongjmp.c -> src/setjmp/siglongjmp.c

(Logical change 1.290)
---
 src/setjmp/siglongjmp.c | 98 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 src/setjmp/siglongjmp.c

diff --git a/src/setjmp/siglongjmp.c b/src/setjmp/siglongjmp.c
new file mode 100644
index 00000000..fea5de1a
--- /dev/null
+++ b/src/setjmp/siglongjmp.c
@@ -0,0 +1,98 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2003-2004 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.  */
+
+#define UNW_LOCAL_ONLY
+
+#include <assert.h>
+#include <libunwind.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdlib.h>
+
+#include "tdep.h"
+#include "jmpbuf.h"
+#include "setjmp_i.h"
+
+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 (!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) cont))
+	abort ();
+
+      unw_resume (&c);
+
+      abort ();
+    }
+  while (unw_step (&c) >= 0);
+
+  abort ();
+}