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/* Native-dependent code for NetBSD/sparc.
Copyright (C) 2002-2017 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 3 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, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "regcache.h"
#include "target.h"
#include "sparc-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
sparc32nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
/* The following is true for NetBSD 1.6.2:
The pcb contains %sp, %pc, %psr and %wim. 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;
regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
regcache_raw_supply (regcache, SPARC_O7_REGNUM, &pcb->pcb_pc);
regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, &pcb->pcb_psr);
regcache_raw_supply (regcache, SPARC32_WIM_REGNUM, &pcb->pcb_wim);
regcache_raw_supply (regcache, SPARC32_PC_REGNUM, &pcb->pcb_pc);
sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
return 1;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_sparcnbsd_nat (void);
void
_initialize_sparcnbsd_nat (void)
{
sparc_gregmap = &sparc32nbsd_gregmap;
sparc_fpregmap = &sparc32_bsd_fpregmap;
/* We've got nothing to add to the generic SPARC target. */
add_target (sparc_target ());
/* Support debugging kernel virtual memory images. */
bsd_kvm_add_target (sparc32nbsd_supply_pcb);
}
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