1/* Native-dependent code for NetBSD/sparc. 2 3 Copyright (C) 2002, 2003, 2004, 2007 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 "defs.h" 21#include "regcache.h" 22#include "target.h" 23 24#include "sparc-tdep.h" 25#include "sparc-nat.h" 26 27/* Support for debugging kernel virtual memory images. */ 28 29#include <sys/types.h> 30#include <machine/pcb.h> 31 32#include "bsd-kvm.h" 33 34static int 35sparc32nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb) 36{ 37 /* The following is true for NetBSD 1.6.2: 38 39 The pcb contains %sp, %pc, %psr and %wim. From this information 40 we reconstruct the register state as it would look when we just 41 returned from cpu_switch(). */ 42 43 /* The stack pointer shouldn't be zero. */ 44 if (pcb->pcb_sp == 0) 45 return 0; 46 47 regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp); 48 regcache_raw_supply (regcache, SPARC_O7_REGNUM, &pcb->pcb_pc); 49 regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, &pcb->pcb_psr); 50 regcache_raw_supply (regcache, SPARC32_WIM_REGNUM, &pcb->pcb_wim); 51 regcache_raw_supply (regcache, SPARC32_PC_REGNUM, &pcb->pcb_pc); 52 53 sparc_supply_rwindow (regcache, pcb->pcb_sp, -1); 54 55 return 1; 56} 57 58 59/* Provide a prototype to silence -Wmissing-prototypes. */ 60void _initialize_sparcnbsd_nat (void); 61 62void 63_initialize_sparcnbsd_nat (void) 64{ 65 sparc_gregset = &sparc32nbsd_gregset; 66 67 /* We've got nothing to add to the generic SPARC target. */ 68 add_target (sparc_target ()); 69 70 /* Support debugging kernel virtual memory images. */ 71 bsd_kvm_add_target (sparc32nbsd_supply_pcb); 72} 73