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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [sparc64fbsd-nat.c] - Blame information for rev 24

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1 24 jeremybenn
/* Native-dependent code for FreeBSD/sparc64.
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   Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#include "defs.h"
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#include "regcache.h"
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#include "target.h"
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#include "fbsd-nat.h"
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#include "sparc64-tdep.h"
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#include "sparc-nat.h"
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/* Support for debugging kernel virtual memory images.  */
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#include <sys/types.h>
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#include <machine/pcb.h>
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#include "bsd-kvm.h"
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static int
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sparc64fbsd_kvm_supply_pcb (struct regcache *regcache, struct pcb *pcb)
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{
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  /* The following is true for FreeBSD 5.4:
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     The pcb contains %sp and %pc.  Since the register windows are
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     explicitly flushed, we can find the `local' and `in' registers on
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     the stack.  */
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  /* The stack pointer shouldn't be zero.  */
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  if (pcb->pcb_sp == 0)
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    return 0;
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  regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
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  regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc);
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  /* Synthesize %npc.  */
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  pcb->pcb_pc += 4;
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  regcache_raw_supply (regcache, SPARC64_NPC_REGNUM, &pcb->pcb_pc);
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  /* Read `local' and `in' registers from the stack.  */
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  sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
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  return 1;
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}
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/* Provide a prototype to silence -Wmissing-prototypes.  */
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void _initialize_sparc64fbsd_nat (void);
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void
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_initialize_sparc64fbsd_nat (void)
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{
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  struct target_ops *t;
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  /* Add some extra features to the generic SPARC target.  */
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  t = sparc_target ();
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  t->to_pid_to_exec_file = fbsd_pid_to_exec_file;
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  t->to_find_memory_regions = fbsd_find_memory_regions;
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  t->to_make_corefile_notes = fbsd_make_corefile_notes;
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  add_target (t);
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  sparc_gregset = &sparc64fbsd_gregset;
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  /* Support debugging kernel virtual memory images.  */
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  bsd_kvm_add_target (sparc64fbsd_kvm_supply_pcb);
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}

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