1 /* Native-dependent code for NetBSD/sparc. 2 3 Copyright 2002, 2003, 2004 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 2 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, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22 #include "defs.h" 23 #include "regcache.h" 24 #include "target.h" 25 26 #include "sparc-tdep.h" 27 #include "sparc-nat.h" 28 29 /* Support for debugging kernel virtual memory images. */ 30 31 #include <sys/types.h> 32 #include <machine/pcb.h> 33 34 #include "bsd-kvm.h" 35 36 static int 37 sparc32nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb) 38 { 39 /* The following is true for NetBSD 1.6.2: 40 41 The pcb contains %sp, %pc, %psr and %wim. From this information 42 we reconstruct the register state as it would look when we just 43 returned from cpu_switch(). */ 44 45 /* The stack pointer shouldn't be zero. */ 46 if (pcb->pcb_sp == 0) 47 return 0; 48 49 regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp); 50 regcache_raw_supply (regcache, SPARC_O7_REGNUM, &pcb->pcb_pc); 51 regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, &pcb->pcb_psr); 52 regcache_raw_supply (regcache, SPARC32_WIM_REGNUM, &pcb->pcb_wim); 53 regcache_raw_supply (regcache, SPARC32_PC_REGNUM, &pcb->pcb_pc); 54 55 sparc_supply_rwindow (regcache, pcb->pcb_sp, -1); 56 57 return 1; 58 } 59 60 61 /* Provide a prototype to silence -Wmissing-prototypes. */ 62 void _initialize_sparcnbsd_nat (void); 63 64 void 65 _initialize_sparcnbsd_nat (void) 66 { 67 sparc_gregset = &sparc32nbsd_gregset; 68 69 /* We've got nothing to add to the generic SPARC target. */ 70 add_target (sparc_target ()); 71 72 /* Support debugging kernel virtual memory images. */ 73 bsd_kvm_add_target (sparc32nbsd_supply_pcb); 74 } 75