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/* Native-dependent code for OpenBSD/sparc64.
Copyright 2003, 2004, 2006 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 "gdbcore.h"
#include "regcache.h"
#include "target.h"
#include "obsd-nat.h"
#include "sparc64-tdep.h"
#include "sparc-nat.h"
static void
sparc64obsd_supply_gregset (const struct sparc_gregset *gregset,
struct regcache *regcache,
int regnum, const void *gregs)
{
sparc64_supply_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
}
static void
sparc64obsd_collect_gregset (const struct sparc_gregset *gregset,
const struct regcache *regcache,
int regnum, void *gregs)
{
sparc64_collect_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs);
}
static void
sparc64obsd_supply_fpregset (struct regcache *regcache,
int regnum, const void *fpregs)
{
sparc64_supply_fpregset (regcache, regnum, fpregs);
}
static void
sparc64obsd_collect_fpregset (const struct regcache *regcache,
int regnum, void *fpregs)
{
sparc64_collect_fpregset (regcache, regnum, fpregs);
}
/* Determine whether `gregset_t' contains register REGNUM. */
static int
sparc64obsd_gregset_supplies_p (int regnum)
{
/* Integer registers. */
if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
|| (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
|| (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
|| (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
return 1;
/* Control registers. */
if (regnum == SPARC64_PC_REGNUM
|| regnum == SPARC64_NPC_REGNUM
|| regnum == SPARC64_STATE_REGNUM
|| regnum == SPARC64_Y_REGNUM)
return 1;
return 0;
}
/* Determine whether `fpregset_t' contains register REGNUM. */
static int
sparc64obsd_fpregset_supplies_p (int regnum)
{
/* Floating-point registers. */
if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
|| (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM))
return 1;
/* Control registers. */
if (regnum == SPARC64_FSR_REGNUM)
return 1;
return 0;
}
/* Support for debugging kernel virtual memory images. */
#include <sys/types.h>
#include <machine/pcb.h>
#include "bsd-kvm.h"
static int
sparc64obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
u_int64_t state;
int regnum;
/* The following is true for OpenBSD 3.0:
The pcb contains %sp and %pc, %pstate and %cwp. From this
information we reconstruct the register state as it would look
when we just returned from cpu_switch(). */
/* The stack pointer shouldn't be zero. */
if (pcb->pcb_sp == 0)
return 0;
/* If the program counter is zero, this is probably a core dump, and
we can get %pc from the stack. */
if (pcb->pcb_pc == 0)
read_memory(pcb->pcb_sp + BIAS - 176 + (11 * 8),
(char *)&pcb->pcb_pc, sizeof pcb->pcb_pc);
regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc);
state = pcb->pcb_pstate << 8 | pcb->pcb_cwp;
regcache_raw_supply (regcache, SPARC64_STATE_REGNUM, &state);
sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
return 1;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_sparc64obsd_nat (void);
void
_initialize_sparc64obsd_nat (void)
{
struct target_ops *t;
sparc_supply_gregset = sparc64obsd_supply_gregset;
sparc_collect_gregset = sparc64obsd_collect_gregset;
sparc_supply_fpregset = sparc64obsd_supply_fpregset;
sparc_collect_fpregset = sparc64obsd_collect_fpregset;
sparc_gregset_supplies_p = sparc64obsd_gregset_supplies_p;
sparc_fpregset_supplies_p = sparc64obsd_fpregset_supplies_p;
/* Add some extra features to the generic SPARC target. */
t = sparc_target ();
t->to_pid_to_str = obsd_pid_to_str;
t->to_find_new_threads = obsd_find_new_threads;
t->to_wait = obsd_wait;
add_target (t);
/* Support debugging kernel virtual memory images. */
bsd_kvm_add_target (sparc64obsd_supply_pcb);
}
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