1 /* Native-dependent code for FreeBSD/sparc64. 2 3 Copyright (C) 2003-2024 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #include "regcache.h" 21 #include "target.h" 22 23 #include "fbsd-nat.h" 24 #include "sparc64-tdep.h" 25 #include "sparc-nat.h" 26 27 28 /* Support for debugging kernel virtual memory images. */ 29 30 #include <sys/types.h> 31 #include <machine/pcb.h> 32 33 #include "bsd-kvm.h" 34 35 static int 36 sparc64fbsd_kvm_supply_pcb (struct regcache *regcache, struct pcb *pcb) 37 { 38 /* The following is true for FreeBSD 5.4: 39 40 The pcb contains %sp and %pc. Since the register windows are 41 explicitly flushed, we can find the `local' and `in' registers on 42 the stack. */ 43 44 /* The stack pointer shouldn't be zero. */ 45 if (pcb->pcb_sp == 0) 46 return 0; 47 48 regcache->raw_supply (SPARC_SP_REGNUM, &pcb->pcb_sp); 49 regcache->raw_supply (SPARC64_PC_REGNUM, &pcb->pcb_pc); 50 51 /* Synthesize %npc. */ 52 pcb->pcb_pc += 4; 53 regcache->raw_supply (SPARC64_NPC_REGNUM, &pcb->pcb_pc); 54 55 /* Read `local' and `in' registers from the stack. */ 56 sparc_supply_rwindow (regcache, pcb->pcb_sp, -1); 57 58 return 1; 59 } 60 61 /* Add some extra features to the generic SPARC target. */ 62 static sparc_target<fbsd_nat_target> the_sparc64_fbsd_nat_target; 63 64 void _initialize_sparc64fbsd_nat (); 65 void 66 _initialize_sparc64fbsd_nat () 67 { 68 add_inf_child_target (&the_sparc64_fbsd_nat_target); 69 70 sparc_gregmap = &sparc64fbsd_gregmap; 71 72 /* Support debugging kernel virtual memory images. */ 73 bsd_kvm_add_target (sparc64fbsd_kvm_supply_pcb); 74 } 75