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/* 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

#define GDB_MULTI_ARCH GDB_MULTI_ARCH_PARTIAL

#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

#define PRINT_EXTRA_FRAME_INFO(fi) alpha_print_extra_frame_info ((fi))

extern void alpha_print_extra_frame_info (struct frame_info *);

/* 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 */