84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/* Native-dependent code for FreeBSD/sparc64.
|
||
|
||
Copyright (C) 2003, 2004, 2005, 2007 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., 51 Franklin Street, Fifth Floor,
|
||
Boston, MA 02110-1301, USA. */
|
||
|
||
#include "defs.h"
|
||
#include "regcache.h"
|
||
#include "target.h"
|
||
|
||
#include "fbsd-nat.h"
|
||
#include "sparc64-tdep.h"
|
||
#include "sparc-nat.h"
|
||
|
||
|
||
/* Support for debugging kernel virtual memory images. */
|
||
|
||
#include <sys/types.h>
|
||
#include <machine/pcb.h>
|
||
|
||
#include "bsd-kvm.h"
|
||
|
||
static int
|
||
sparc64fbsd_kvm_supply_pcb (struct regcache *regcache, struct pcb *pcb)
|
||
{
|
||
/* The following is true for FreeBSD 5.4:
|
||
|
||
The pcb contains %sp and %pc. Since the register windows are
|
||
explicitly flushed, we can find the `local' and `in' registers on
|
||
the stack. */
|
||
|
||
/* The stack pointer shouldn't be zero. */
|
||
if (pcb->pcb_sp == 0)
|
||
return 0;
|
||
|
||
regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
|
||
regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc);
|
||
|
||
/* Synthesize %npc. */
|
||
pcb->pcb_pc += 4;
|
||
regcache_raw_supply (regcache, SPARC64_NPC_REGNUM, &pcb->pcb_pc);
|
||
|
||
/* Read `local' and `in' registers from the stack. */
|
||
sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
|
||
|
||
return 1;
|
||
}
|
||
|
||
|
||
/* Provide a prototype to silence -Wmissing-prototypes. */
|
||
void _initialize_sparc64fbsd_nat (void);
|
||
|
||
void
|
||
_initialize_sparc64fbsd_nat (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
/* Add some extra features to the generic SPARC target. */
|
||
t = sparc_target ();
|
||
t->to_pid_to_exec_file = fbsd_pid_to_exec_file;
|
||
t->to_find_memory_regions = fbsd_find_memory_regions;
|
||
t->to_make_corefile_notes = fbsd_make_corefile_notes;
|
||
add_target (t);
|
||
|
||
sparc_gregset = &sparc64fbsd_gregset;
|
||
|
||
/* Support debugging kernel virtual memory images. */
|
||
bsd_kvm_add_target (sparc64fbsd_kvm_supply_pcb);
|
||
}
|