Read stack pointer from r12.

(Logical change 1.11)

src/ia64/init.h

@@ -0,0 +1,112 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2002 Hewlett-Packard Co
+	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+
+This file is part of libunwind.
+
+libunwind is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+libunwind is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public
+License.  */
+
+#include "unwind_i.h"
+
+static inline
+common_init (struct ia64_cursor *c)
+{
+  int i, ret;
+
+  c->cfm_loc =		IA64_REG_LOC (c, UNW_IA64_CFM);
+  c->top_rnat_loc =	IA64_REG_LOC (c, UNW_IA64_AR_RNAT);
+  c->bsp_loc =		IA64_REG_LOC (c, UNW_IA64_AR_BSP);
+  c->bspstore_loc =	IA64_REG_LOC (c, UNW_IA64_AR_BSPSTORE);
+  c->pfs_loc =		IA64_REG_LOC (c, UNW_IA64_AR_PFS);
+  c->rnat_loc =		IA64_REG_LOC (c, UNW_IA64_AR_RNAT);
+  c->ip_loc =		IA64_REG_LOC (c, UNW_IA64_IP);
+  c->pri_unat_loc =	0;	/* no primary UNaT location */
+  c->unat_loc =		IA64_REG_LOC (c, UNW_IA64_AR_UNAT);
+  c->pr_loc =		IA64_REG_LOC (c, UNW_IA64_PR);
+  c->lc_loc =		IA64_REG_LOC (c, UNW_IA64_AR_LC);
+  c->fpsr_loc =		IA64_REG_LOC (c, UNW_IA64_AR_FPSR);
+
+  c->r4_loc = IA64_REG_LOC (c, UNW_IA64_GR + 4);
+  c->r5_loc = IA64_REG_LOC (c, UNW_IA64_GR + 5);
+  c->r6_loc = IA64_REG_LOC (c, UNW_IA64_GR + 6);
+  c->r7_loc = IA64_REG_LOC (c, UNW_IA64_GR + 7);
+
+  /* This says that each NaT bit is stored along with the
+     corresponding preserved register: */
+  c->nat4_loc = IA64_LOC (4, 0);
+  c->nat5_loc = IA64_LOC (5, 0);
+  c->nat6_loc = IA64_LOC (6, 0);
+  c->nat7_loc = IA64_LOC (7, 0);
+
+  c->b1_loc = IA64_REG_LOC (c, UNW_IA64_BR + 1);
+  c->b2_loc = IA64_REG_LOC (c, UNW_IA64_BR + 2);
+  c->b3_loc = IA64_REG_LOC (c, UNW_IA64_BR + 3);
+  c->b4_loc = IA64_REG_LOC (c, UNW_IA64_BR + 4);
+  c->b5_loc = IA64_REG_LOC (c, UNW_IA64_BR + 5);
+
+  c->f2_loc = IA64_FPREG_LOC (c, UNW_IA64_FR + 2);
+  c->f3_loc = IA64_FPREG_LOC (c, UNW_IA64_FR + 3);
+  c->f4_loc = IA64_FPREG_LOC (c, UNW_IA64_FR + 4);
+  c->f5_loc = IA64_FPREG_LOC (c, UNW_IA64_FR + 5);
+  for (i = 16; i <= 31; ++i)
+    c->fr_loc[i - 16] = IA64_FPREG_LOC (c, UNW_IA64_FR + i);
+
+  ret = ia64_get (c, c->pr_loc, &c->pr);
+  if (ret < 0)
+    return ret;
+
+  ret = ia64_get (c, c->ip_loc, &c->ip);
+  if (ret < 0)
+    return ret;
+
+  ret = ia64_get (c, IA64_REG_LOC (c, UNW_IA64_GR + 12), &c->sp);
+  if (ret < 0)
+    return ret;
+
+  c->psp = c->sp;
+
+  ret = ia64_get (c, c->bsp_loc, &c->bsp);
+  if (ret < 0)
+    return ret;
+
+  c->rbs_top = c->bsp;
+  c->pi.flags = 0;
+
+#ifdef UNW_LOCAL_ONLY
+  c->eh_args[0] = c->eh_args[1] = c->eh_args[2] = c->eh_args[3] = 0;
+#else
+  for (i = 0; i < 4; ++i)
+    {
+      ret = ia64_get (c, IA64_REG_LOC (c, UNW_IA64_GR + 15 + i),
+		      &c->eh_args[i]);
+      if (ret < 0)
+	{
+	  if (ret == -UNW_EBADREG)
+	    c->eh_args[i] = 0;
+	  else
+	    return ret;
+	}
+    }
+#endif
+
+#ifdef IA64_UNW_SCRIPT_CACHE
+  c->hint = 0;
+  c->prev_script = 0;
+#endif
+  return ia64_get_proc_info (c);
+}