/* Definitions to make GDB run on an Alpha box under OSF1.  This is
   also used by the Alpha/Netware and Alpha GNU/Linux targets.

   Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002 Free
   Software Foundation, Inc.

   This file is part of GDB.

   This program 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 of the License, or
   (at your option) any later version.

   This program 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.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#ifndef TM_ALPHA_H
#define TM_ALPHA_H

#include "bfd.h"
#include "coff/sym.h"		/* Needed for PDR below.  */
#include "coff/symconst.h"

struct frame_info;
struct symbol;

/* Number of traps that happen between exec'ing the shell
   to run an inferior, and when we finally get to
   the inferior code.  This is 2 on most implementations.  */
#define START_INFERIOR_TRAPS_EXPECTED 3

/* Special symbol found in blocks associated with routines.  We can hang
   alpha_extra_func_info_t's off of this.  */

#define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
extern void ecoff_relocate_efi (struct symbol *, CORE_ADDR);

#define RA_REGNUM 26		/* XXXJRT needed by mdebugread.c */

/* Specific information about a procedure.
   This overlays the ALPHA's PDR records, 
   alpharead.c (ab)uses this to save memory */

typedef struct alpha_extra_func_info
  {
    long numargs;		/* number of args to procedure (was iopt) */
    PDR pdr;			/* Procedure descriptor record */
  }
 *alpha_extra_func_info_t;

/* Define the extra_func_info that mipsread.c needs.
   FIXME: We should define our own PDR interface, perhaps in a separate
   header file. This would get rid of the <bfd.h> inclusion in all sources
   and would abstract the mips/alpha interface from ecoff.  */
#define mips_extra_func_info alpha_extra_func_info
#define mips_extra_func_info_t alpha_extra_func_info_t

/* It takes two values to specify a frame on the ALPHA.  Sigh.

   In fact, at the moment, the *PC* is the primary value that sets up
   a frame.  The PC is looked up to see what function it's in; symbol
   information from that function tells us which register is the frame
   pointer base, and what offset from there is the "virtual frame pointer".
   (This is usually an offset from SP.)  FIXME -- this should be cleaned
   up so that the primary value is the SP, and the PC is used to disambiguate
   multiple functions with the same SP that are at different stack levels. */

#define SETUP_ARBITRARY_FRAME(argc, argv) \
  alpha_setup_arbitrary_frame (argc, argv)
extern struct frame_info *alpha_setup_arbitrary_frame (int, CORE_ADDR *);

#endif /* TM_ALPHA_H */