1 /* Copyright (C) 2020-2024 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 "netbsd-low.h" 23 #include "gdbsupport/x86-xstate.h" 24 #include "arch/amd64.h" 25 #include "x86-tdesc.h" 26 #include "tdesc.h" 27 28 /* The index of various registers inside the regcache. */ 29 30 enum netbsd_x86_64_gdb_regnum 31 { 32 AMD64_RAX_REGNUM, /* %rax */ 33 AMD64_RBX_REGNUM, /* %rbx */ 34 AMD64_RCX_REGNUM, /* %rcx */ 35 AMD64_RDX_REGNUM, /* %rdx */ 36 AMD64_RSI_REGNUM, /* %rsi */ 37 AMD64_RDI_REGNUM, /* %rdi */ 38 AMD64_RBP_REGNUM, /* %rbp */ 39 AMD64_RSP_REGNUM, /* %rsp */ 40 AMD64_R8_REGNUM, /* %r8 */ 41 AMD64_R9_REGNUM, /* %r9 */ 42 AMD64_R10_REGNUM, /* %r10 */ 43 AMD64_R11_REGNUM, /* %r11 */ 44 AMD64_R12_REGNUM, /* %r12 */ 45 AMD64_R13_REGNUM, /* %r13 */ 46 AMD64_R14_REGNUM, /* %r14 */ 47 AMD64_R15_REGNUM, /* %r15 */ 48 AMD64_RIP_REGNUM, /* %rip */ 49 AMD64_EFLAGS_REGNUM, /* %eflags */ 50 AMD64_CS_REGNUM, /* %cs */ 51 AMD64_SS_REGNUM, /* %ss */ 52 AMD64_DS_REGNUM, /* %ds */ 53 AMD64_ES_REGNUM, /* %es */ 54 AMD64_FS_REGNUM, /* %fs */ 55 AMD64_GS_REGNUM, /* %gs */ 56 AMD64_ST0_REGNUM = 24, /* %st0 */ 57 AMD64_ST1_REGNUM, /* %st1 */ 58 AMD64_FCTRL_REGNUM = AMD64_ST0_REGNUM + 8, 59 AMD64_FSTAT_REGNUM = AMD64_ST0_REGNUM + 9, 60 AMD64_FTAG_REGNUM = AMD64_ST0_REGNUM + 10, 61 AMD64_XMM0_REGNUM = 40, /* %xmm0 */ 62 AMD64_XMM1_REGNUM, /* %xmm1 */ 63 AMD64_MXCSR_REGNUM = AMD64_XMM0_REGNUM + 16, 64 AMD64_YMM0H_REGNUM, /* %ymm0h */ 65 AMD64_YMM15H_REGNUM = AMD64_YMM0H_REGNUM + 15, 66 AMD64_BND0R_REGNUM = AMD64_YMM15H_REGNUM + 1, 67 AMD64_BND3R_REGNUM = AMD64_BND0R_REGNUM + 3, 68 AMD64_BNDCFGU_REGNUM, 69 AMD64_BNDSTATUS_REGNUM, 70 AMD64_XMM16_REGNUM, 71 AMD64_XMM31_REGNUM = AMD64_XMM16_REGNUM + 15, 72 AMD64_YMM16H_REGNUM, 73 AMD64_YMM31H_REGNUM = AMD64_YMM16H_REGNUM + 15, 74 AMD64_K0_REGNUM, 75 AMD64_K7_REGNUM = AMD64_K0_REGNUM + 7, 76 AMD64_ZMM0H_REGNUM, 77 AMD64_ZMM31H_REGNUM = AMD64_ZMM0H_REGNUM + 31, 78 AMD64_PKRU_REGNUM, 79 AMD64_FSBASE_REGNUM, 80 AMD64_GSBASE_REGNUM 81 }; 82 83 /* The fill_function for the general-purpose register set. */ 84 85 static void 86 netbsd_x86_64_fill_gregset (struct regcache *regcache, char *buf) 87 { 88 struct reg *r = (struct reg *) buf; 89 90 #define netbsd_x86_64_collect_gp(regnum, fld) do { \ 91 collect_register (regcache, regnum, &r->regs[_REG_##fld]); \ 92 } while (0) 93 94 netbsd_x86_64_collect_gp (AMD64_RAX_REGNUM, RAX); 95 netbsd_x86_64_collect_gp (AMD64_RBX_REGNUM, RBX); 96 netbsd_x86_64_collect_gp (AMD64_RCX_REGNUM, RCX); 97 netbsd_x86_64_collect_gp (AMD64_RDX_REGNUM, RDX); 98 netbsd_x86_64_collect_gp (AMD64_RSI_REGNUM, RSI); 99 netbsd_x86_64_collect_gp (AMD64_RDI_REGNUM, RDI); 100 netbsd_x86_64_collect_gp (AMD64_RBP_REGNUM, RBP); 101 netbsd_x86_64_collect_gp (AMD64_RSP_REGNUM, RSP); 102 netbsd_x86_64_collect_gp (AMD64_R8_REGNUM, R8); 103 netbsd_x86_64_collect_gp (AMD64_R9_REGNUM, R9); 104 netbsd_x86_64_collect_gp (AMD64_R10_REGNUM, R10); 105 netbsd_x86_64_collect_gp (AMD64_R11_REGNUM, R11); 106 netbsd_x86_64_collect_gp (AMD64_R12_REGNUM, R12); 107 netbsd_x86_64_collect_gp (AMD64_R13_REGNUM, R13); 108 netbsd_x86_64_collect_gp (AMD64_R14_REGNUM, R14); 109 netbsd_x86_64_collect_gp (AMD64_R15_REGNUM, R15); 110 netbsd_x86_64_collect_gp (AMD64_RIP_REGNUM, RIP); 111 netbsd_x86_64_collect_gp (AMD64_EFLAGS_REGNUM, RFLAGS); 112 netbsd_x86_64_collect_gp (AMD64_CS_REGNUM, CS); 113 netbsd_x86_64_collect_gp (AMD64_SS_REGNUM, SS); 114 netbsd_x86_64_collect_gp (AMD64_DS_REGNUM, DS); 115 netbsd_x86_64_collect_gp (AMD64_ES_REGNUM, ES); 116 netbsd_x86_64_collect_gp (AMD64_FS_REGNUM, FS); 117 netbsd_x86_64_collect_gp (AMD64_GS_REGNUM, GS); 118 } 119 120 /* The store_function for the general-purpose register set. */ 121 122 static void 123 netbsd_x86_64_store_gregset (struct regcache *regcache, const char *buf) 124 { 125 struct reg *r = (struct reg *) buf; 126 127 #define netbsd_x86_64_supply_gp(regnum, fld) do { \ 128 supply_register (regcache, regnum, &r->regs[_REG_##fld]); \ 129 } while(0) 130 131 netbsd_x86_64_supply_gp (AMD64_RAX_REGNUM, RAX); 132 netbsd_x86_64_supply_gp (AMD64_RBX_REGNUM, RBX); 133 netbsd_x86_64_supply_gp (AMD64_RCX_REGNUM, RCX); 134 netbsd_x86_64_supply_gp (AMD64_RDX_REGNUM, RDX); 135 netbsd_x86_64_supply_gp (AMD64_RSI_REGNUM, RSI); 136 netbsd_x86_64_supply_gp (AMD64_RDI_REGNUM, RDI); 137 netbsd_x86_64_supply_gp (AMD64_RBP_REGNUM, RBP); 138 netbsd_x86_64_supply_gp (AMD64_RSP_REGNUM, RSP); 139 netbsd_x86_64_supply_gp (AMD64_R8_REGNUM, R8); 140 netbsd_x86_64_supply_gp (AMD64_R9_REGNUM, R9); 141 netbsd_x86_64_supply_gp (AMD64_R10_REGNUM, R10); 142 netbsd_x86_64_supply_gp (AMD64_R11_REGNUM, R11); 143 netbsd_x86_64_supply_gp (AMD64_R12_REGNUM, R12); 144 netbsd_x86_64_supply_gp (AMD64_R13_REGNUM, R13); 145 netbsd_x86_64_supply_gp (AMD64_R14_REGNUM, R14); 146 netbsd_x86_64_supply_gp (AMD64_R15_REGNUM, R15); 147 netbsd_x86_64_supply_gp (AMD64_RIP_REGNUM, RIP); 148 netbsd_x86_64_supply_gp (AMD64_EFLAGS_REGNUM, RFLAGS); 149 netbsd_x86_64_supply_gp (AMD64_CS_REGNUM, CS); 150 netbsd_x86_64_supply_gp (AMD64_SS_REGNUM, SS); 151 netbsd_x86_64_supply_gp (AMD64_DS_REGNUM, DS); 152 netbsd_x86_64_supply_gp (AMD64_ES_REGNUM, ES); 153 netbsd_x86_64_supply_gp (AMD64_FS_REGNUM, FS); 154 netbsd_x86_64_supply_gp (AMD64_GS_REGNUM, GS); 155 } 156 157 /* Description of all the x86-netbsd register sets. */ 158 159 static const struct netbsd_regset_info netbsd_target_regsets[] = 160 { 161 /* General Purpose Registers. */ 162 {PT_GETREGS, PT_SETREGS, sizeof (struct reg), 163 netbsd_x86_64_fill_gregset, netbsd_x86_64_store_gregset}, 164 /* End of list marker. */ 165 {0, 0, -1, NULL, NULL } 166 }; 167 168 /* NetBSD target op definitions for the amd64 architecture. */ 169 170 class netbsd_amd64_target : public netbsd_process_target 171 { 172 protected: 173 const netbsd_regset_info *get_regs_info () override; 174 175 void low_arch_setup () override; 176 }; 177 178 /* Return the information to access registers. */ 179 180 const netbsd_regset_info * 181 netbsd_amd64_target::get_regs_info () 182 { 183 return netbsd_target_regsets; 184 } 185 186 /* Architecture-specific setup for the current process. */ 187 188 void 189 netbsd_amd64_target::low_arch_setup () 190 { 191 target_desc *tdesc 192 = amd64_create_target_description (X86_XSTATE_SSE_MASK, false, false, false); 193 194 init_target_desc (tdesc, amd64_expedite_regs); 195 196 current_process ()->tdesc = tdesc; 197 } 198 199 /* The singleton target ops object. */ 200 201 static netbsd_amd64_target the_netbsd_amd64_target; 202 203 /* The NetBSD target ops object. */ 204 205 netbsd_process_target *the_netbsd_target = &the_netbsd_amd64_target; 206