| 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 "gdbcore.h" |
| 24 | #include "regcache.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 | \f |
| 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 | /* Support debugging kernel virtual memory images. */ |
| 70 | bsd_kvm_add_target (sparc32nbsd_supply_pcb); |
| 71 | } |