Include "setjmp_i.h".

Abstract ia64-specific code into bsp_match() routine.
Support any platform with at least 2 EH argument registers.

2004/12/06 01:33:16-08:00 mostang.com!davidm
Rename: src/longjmp.c -> src/setjmp/longjmp.c

(Logical change 1.290)

src/setjmp/longjmp.c

@@ -0,0 +1,88 @@
+/* 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 "jmpbuf.h"
+#include "setjmp_i.h"
+
+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 ();
+      if (sp != wp[JB_SP])
+	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) &_UI_longjmp_cont))
+	abort ();
+
+      unw_resume (&c);
+
+      abort ();
+    }
+  while (unw_step (&c) >= 0);
+
+  abort ();
+}
+
+#ifdef __GNUC__
+void longjmp (jmp_buf env, int val) __attribute__ ((alias ("_longjmp")));
+#else
+
+void
+longjmp (jmp_buf env, int val)
+{
+  _longjmp (env, val);
+}
+
+#endif