1 /* Copyright (C) 2020-2023 Free Software Foundation, Inc. 2 3 This file is part of GDB. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18 #include <sys/types.h> 19 #include <sys/ptrace.h> 20 #include <limits.h> 21 22 #include "server.h" 23 #include "netbsd-low.h" 24 #include "arch/aarch64.h" 25 #include "arch/aarch64-insn.h" 26 #include "tdesc.h" 27 28 /* The fill_function for the general-purpose register set. */ 29 30 static void 31 netbsd_aarch64_fill_gregset (struct regcache *regcache, char *buf) 32 { 33 struct reg *r = (struct reg *) buf; 34 35 #define netbsd_aarch64_collect_gp(regnum, fld) do { \ 36 collect_register (regcache, regnum, &r->fld); \ 37 } while (0) 38 39 for (size_t i = 0; i < ARRAY_SIZE (r->r_reg); i++) 40 netbsd_aarch64_collect_gp (AARCH64_X0_REGNUM + i, r_reg[i]); 41 42 netbsd_aarch64_collect_gp (AARCH64_SP_REGNUM, r_sp); 43 netbsd_aarch64_collect_gp (AARCH64_PC_REGNUM, r_pc); 44 } 45 46 /* The store_function for the general-purpose register set. */ 47 48 static void 49 netbsd_aarch64_store_gregset (struct regcache *regcache, const char *buf) 50 { 51 struct reg *r = (struct reg *) buf; 52 53 #define netbsd_aarch64_supply_gp(regnum, fld) do { \ 54 supply_register (regcache, regnum, &r->fld); \ 55 } while(0) 56 57 for (size_t i = 0; i < ARRAY_SIZE (r->r_reg); i++) 58 netbsd_aarch64_supply_gp (AARCH64_X0_REGNUM + i, r_reg[i]); 59 60 netbsd_aarch64_supply_gp (AARCH64_SP_REGNUM, r_sp); 61 netbsd_aarch64_supply_gp (AARCH64_PC_REGNUM, r_pc); 62 } 63 64 /* Description of all the aarch64-netbsd register sets. */ 65 66 static const struct netbsd_regset_info netbsd_target_regsets[] = 67 { 68 /* General Purpose Registers. */ 69 {PT_GETREGS, PT_SETREGS, sizeof (struct reg), 70 netbsd_aarch64_fill_gregset, netbsd_aarch64_store_gregset}, 71 /* End of list marker. */ 72 {0, 0, -1, NULL, NULL } 73 }; 74 75 /* NetBSD target op definitions for the aarch64 architecture. */ 76 77 class netbsd_aarch64_target : public netbsd_process_target 78 { 79 protected: 80 const netbsd_regset_info *get_regs_info () override; 81 82 void low_arch_setup () override; 83 }; 84 85 /* Return the information to access registers. */ 86 87 const netbsd_regset_info * 88 netbsd_aarch64_target::get_regs_info () 89 { 90 return netbsd_target_regsets; 91 } 92 93 /* Architecture-specific setup for the current process. */ 94 95 void 96 netbsd_aarch64_target::low_arch_setup () 97 { 98 target_desc *tdesc 99 = aarch64_create_target_description ({}); 100 101 static const char *expedite_regs_aarch64[] = { "x29", "sp", "pc", NULL }; 102 init_target_desc (tdesc, expedite_regs_aarch64); 103 104 current_process ()->tdesc = tdesc; 105 } 106 107 /* The singleton target ops object. */ 108 109 static netbsd_aarch64_target the_netbsd_aarch64_target; 110 111 /* The NetBSD target ops object. */ 112 113 netbsd_process_target *the_netbsd_target = &the_netbsd_aarch64_target; 114