1 /* Native-dependent code for NetBSD/sh. 2 3 Copyright (C) 2002-2023 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 "netbsd-nat.h" 32 #include "regcache.h" 33 34 struct sh_nbsd_nat_target final : public nbsd_nat_target 35 { 36 void fetch_registers (struct regcache *, int) override; 37 void store_registers (struct regcache *, int) override; 38 }; 39 40 static sh_nbsd_nat_target the_sh_nbsd_nat_target; 41 42 /* Determine if PT_GETREGS fetches this register. */ 43 #define GETREGS_SUPPLIES(gdbarch, regno) \ 44 (((regno) >= R0_REGNUM && (regno) <= (R0_REGNUM + 15)) \ 45 || (regno) == gdbarch_pc_regnum (gdbarch) || (regno) == PR_REGNUM \ 46 || (regno) == MACH_REGNUM || (regno) == MACL_REGNUM \ 47 || (regno) == SR_REGNUM || (regno) == GBR_REGNUM) 48 49 /* Sizeof `struct reg' in <machine/reg.h>. */ 50 #define SHNBSD_SIZEOF_GREGS (22 * 4) 51 52 void 53 sh_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regno) 54 { 55 pid_t pid = regcache->ptid ().pid (); 56 int lwp = regcache->ptid ().lwp (); 57 58 if (regno == -1 || GETREGS_SUPPLIES (regcache->arch (), regno)) 59 { 60 struct reg inferior_registers; 61 62 if (ptrace (PT_GETREGS, pid, 63 (PTRACE_TYPE_ARG3) &inferior_registers, lwp) == -1) 64 perror_with_name (_("Couldn't get registers")); 65 66 sh_corefile_supply_regset (&sh_corefile_gregset, regcache, regno, 67 (char *) &inferior_registers, 68 SHNBSD_SIZEOF_GREGS); 69 70 if (regno != -1) 71 return; 72 } 73 } 74 75 void 76 sh_nbsd_nat_target::store_registers (struct regcache *regcache, int regno) 77 { 78 pid_t pid = regcache->ptid ().pid (); 79 int lwp = regcache->ptid ().lwp (); 80 81 if (regno == -1 || GETREGS_SUPPLIES (regcache->arch (), regno)) 82 { 83 struct reg inferior_registers; 84 85 if (ptrace (PT_GETREGS, pid, 86 (PTRACE_TYPE_ARG3) &inferior_registers, lwp) == -1) 87 perror_with_name (_("Couldn't get registers")); 88 89 sh_corefile_collect_regset (&sh_corefile_gregset, regcache, regno, 90 (char *) &inferior_registers, 91 SHNBSD_SIZEOF_GREGS); 92 93 if (ptrace (PT_SETREGS, pid, 94 (PTRACE_TYPE_ARG3) &inferior_registers, lwp) == -1) 95 perror_with_name (_("Couldn't set registers")); 96 97 if (regno != -1) 98 return; 99 } 100 } 101 102 void _initialize_shnbsd_nat (); 103 void 104 _initialize_shnbsd_nat () 105 { 106 add_inf_child_target (&the_sh_nbsd_nat_target); 107 } 108