| /* 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); |
| } |