| 1 | /* Native-dependent code for NetBSD/sh. |
| 2 | |
| 3 | Copyright (C) 2002-2016 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Wasabi Systems, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "inferior.h" |
| 24 | |
| 25 | #include <sys/types.h> |
| 26 | #include <sys/ptrace.h> |
| 27 | #include <machine/reg.h> |
| 28 | |
| 29 | #include "sh-tdep.h" |
| 30 | #include "inf-ptrace.h" |
| 31 | #include "regcache.h" |
| 32 | |
| 33 | |
| 34 | /* Determine if PT_GETREGS fetches this register. */ |
| 35 | #define GETREGS_SUPPLIES(gdbarch, regno) \ |
| 36 | (((regno) >= R0_REGNUM && (regno) <= (R0_REGNUM + 15)) \ |
| 37 | || (regno) == gdbarch_pc_regnum (gdbarch) || (regno) == PR_REGNUM \ |
| 38 | || (regno) == MACH_REGNUM || (regno) == MACL_REGNUM \ |
| 39 | || (regno) == SR_REGNUM) |
| 40 | |
| 41 | /* Sizeof `struct reg' in <machine/reg.h>. */ |
| 42 | #define SHNBSD_SIZEOF_GREGS (21 * 4) |
| 43 | |
| 44 | static void |
| 45 | shnbsd_fetch_inferior_registers (struct target_ops *ops, |
| 46 | struct regcache *regcache, int regno) |
| 47 | { |
| 48 | if (regno == -1 || GETREGS_SUPPLIES (get_regcache_arch (regcache), regno)) |
| 49 | { |
| 50 | struct reg inferior_registers; |
| 51 | |
| 52 | if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid), |
| 53 | (PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1) |
| 54 | perror_with_name (_("Couldn't get registers")); |
| 55 | |
| 56 | sh_corefile_supply_regset (&sh_corefile_gregset, regcache, regno, |
| 57 | (char *) &inferior_registers, |
| 58 | SHNBSD_SIZEOF_GREGS); |
| 59 | |
| 60 | if (regno != -1) |
| 61 | return; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | static void |
| 66 | shnbsd_store_inferior_registers (struct target_ops *ops, |
| 67 | struct regcache *regcache, int regno) |
| 68 | { |
| 69 | if (regno == -1 || GETREGS_SUPPLIES (get_regcache_arch (regcache), regno)) |
| 70 | { |
| 71 | struct reg inferior_registers; |
| 72 | |
| 73 | if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid), |
| 74 | (PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1) |
| 75 | perror_with_name (_("Couldn't get registers")); |
| 76 | |
| 77 | sh_corefile_collect_regset (&sh_corefile_gregset, regcache, regno, |
| 78 | (char *) &inferior_registers, |
| 79 | SHNBSD_SIZEOF_GREGS); |
| 80 | |
| 81 | if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid), |
| 82 | (PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1) |
| 83 | perror_with_name (_("Couldn't set registers")); |
| 84 | |
| 85 | if (regno != -1) |
| 86 | return; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 91 | void _initialize_shnbsd_nat (void); |
| 92 | |
| 93 | void |
| 94 | _initialize_shnbsd_nat (void) |
| 95 | { |
| 96 | struct target_ops *t; |
| 97 | |
| 98 | t = inf_ptrace_target (); |
| 99 | t->to_fetch_registers = shnbsd_fetch_inferior_registers; |
| 100 | t->to_store_registers = shnbsd_store_inferior_registers; |
| 101 | add_target (t); |
| 102 | } |