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/* Target-dependent code for OSF/1 on Alpha.
Copyright 2002, 2003 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. */
#include "defs.h"
#include "frame.h"
#include "gdbcore.h"
#include "value.h"
#include "osabi.h"
#include "gdb_string.h"
#include "objfiles.h"
#include "alpha-tdep.h"
static int
alpha_osf1_pc_in_sigtramp (CORE_ADDR pc, char *func_name)
{
return (func_name != NULL && strcmp ("__sigtramp", func_name) == 0);
}
static CORE_ADDR
alpha_osf1_sigcontext_addr (struct frame_info *frame)
{
struct frame_info *next_frame = get_next_frame (frame);
if (next_frame != NULL)
return (read_memory_integer (get_frame_base (next_frame), 8));
else
return (read_memory_integer (get_frame_base (frame), 8));
}
static void
alpha_osf1_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Hook into the MDEBUG frame unwinder. */
alpha_mdebug_init_abi (info, gdbarch);
set_gdbarch_pc_in_sigtramp (gdbarch, alpha_osf1_pc_in_sigtramp);
/* The next/step support via procfs on OSF1 is broken when running
on multi-processor machines. We need to use software single stepping
instead. */
set_gdbarch_software_single_step (gdbarch, alpha_software_single_step);
tdep->sigcontext_addr = alpha_osf1_sigcontext_addr;
tdep->jb_pc = 2;
tdep->jb_elt_size = 8;
}
void
_initialize_alpha_osf1_tdep (void)
{
gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_OSF1,
alpha_osf1_init_abi);
}
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