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- /* Native-dependent code for FreeBSD/sparc64.
- Copyright (C) 2003-2022 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 "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 (SPARC_SP_REGNUM, &pcb->pcb_sp);
- regcache->raw_supply (SPARC64_PC_REGNUM, &pcb->pcb_pc);
- /* Synthesize %npc. */
- pcb->pcb_pc += 4;
- regcache->raw_supply (SPARC64_NPC_REGNUM, &pcb->pcb_pc);
- /* Read `local' and `in' registers from the stack. */
- sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
- return 1;
- }
- /* Add some extra features to the generic SPARC target. */
- static sparc_target<fbsd_nat_target> the_sparc64_fbsd_nat_target;
- void _initialize_sparc64fbsd_nat ();
- void
- _initialize_sparc64fbsd_nat ()
- {
- add_inf_child_target (&the_sparc64_fbsd_nat_target);
- sparc_gregmap = &sparc64fbsd_gregmap;
- /* Support debugging kernel virtual memory images. */
- bsd_kvm_add_target (sparc64fbsd_kvm_supply_pcb);
- }
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