| /* Copyright (C) 2020-2024 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include <sys/types.h> |
| #include <sys/ptrace.h> |
| #include <limits.h> |
| |
| #include "netbsd-low.h" |
| #include "gdbsupport/x86-xstate.h" |
| #include "arch/i386.h" |
| #include "x86-tdesc.h" |
| #include "tdesc.h" |
| |
| /* The index of various registers inside the regcache. */ |
| |
| enum netbsd_i386_gdb_regnum |
| { |
| I386_EAX_REGNUM, /* %eax */ |
| I386_ECX_REGNUM, /* %ecx */ |
| I386_EDX_REGNUM, /* %edx */ |
| I386_EBX_REGNUM, /* %ebx */ |
| I386_ESP_REGNUM, /* %esp */ |
| I386_EBP_REGNUM, /* %ebp */ |
| I386_ESI_REGNUM, /* %esi */ |
| I386_EDI_REGNUM, /* %edi */ |
| I386_EIP_REGNUM, /* %eip */ |
| I386_EFLAGS_REGNUM, /* %eflags */ |
| I386_CS_REGNUM, /* %cs */ |
| I386_SS_REGNUM, /* %ss */ |
| I386_DS_REGNUM, /* %ds */ |
| I386_ES_REGNUM, /* %es */ |
| I386_FS_REGNUM, /* %fs */ |
| I386_GS_REGNUM, /* %gs */ |
| I386_ST0_REGNUM /* %st(0) */ |
| }; |
| |
| /* The fill_function for the general-purpose register set. */ |
| |
| static void |
| netbsd_i386_fill_gregset (struct regcache *regcache, char *buf) |
| { |
| struct reg *r = (struct reg *) buf; |
| |
| #define netbsd_i386_collect_gp(regnum, fld) do { \ |
| collect_register (regcache, regnum, &r->r_##fld); \ |
| } while (0) |
| |
| netbsd_i386_collect_gp (I386_EAX_REGNUM, eax); |
| netbsd_i386_collect_gp (I386_EBX_REGNUM, ebx); |
| netbsd_i386_collect_gp (I386_ECX_REGNUM, ecx); |
| netbsd_i386_collect_gp (I386_EDX_REGNUM, edx); |
| netbsd_i386_collect_gp (I386_ESP_REGNUM, esp); |
| netbsd_i386_collect_gp (I386_EBP_REGNUM, ebp); |
| netbsd_i386_collect_gp (I386_ESI_REGNUM, esi); |
| netbsd_i386_collect_gp (I386_EDI_REGNUM, edi); |
| netbsd_i386_collect_gp (I386_EIP_REGNUM, eip); |
| netbsd_i386_collect_gp (I386_EFLAGS_REGNUM, eflags); |
| netbsd_i386_collect_gp (I386_CS_REGNUM, cs); |
| netbsd_i386_collect_gp (I386_SS_REGNUM, ss); |
| netbsd_i386_collect_gp (I386_DS_REGNUM, ds); |
| netbsd_i386_collect_gp (I386_ES_REGNUM, es); |
| netbsd_i386_collect_gp (I386_FS_REGNUM, fs); |
| netbsd_i386_collect_gp (I386_GS_REGNUM, gs); |
| } |
| |
| /* The store_function for the general-purpose register set. */ |
| |
| static void |
| netbsd_i386_store_gregset (struct regcache *regcache, const char *buf) |
| { |
| struct reg *r = (struct reg *) buf; |
| |
| #define netbsd_i386_supply_gp(regnum, fld) do { \ |
| supply_register (regcache, regnum, &r->r_##fld); \ |
| } while(0) |
| |
| netbsd_i386_supply_gp (I386_EAX_REGNUM, eax); |
| netbsd_i386_supply_gp (I386_EBX_REGNUM, ebx); |
| netbsd_i386_supply_gp (I386_ECX_REGNUM, ecx); |
| netbsd_i386_supply_gp (I386_EDX_REGNUM, edx); |
| netbsd_i386_supply_gp (I386_ESP_REGNUM, esp); |
| netbsd_i386_supply_gp (I386_EBP_REGNUM, ebp); |
| netbsd_i386_supply_gp (I386_ESI_REGNUM, esi); |
| netbsd_i386_supply_gp (I386_EDI_REGNUM, edi); |
| netbsd_i386_supply_gp (I386_EIP_REGNUM, eip); |
| netbsd_i386_supply_gp (I386_EFLAGS_REGNUM, eflags); |
| netbsd_i386_supply_gp (I386_CS_REGNUM, cs); |
| netbsd_i386_supply_gp (I386_SS_REGNUM, ss); |
| netbsd_i386_supply_gp (I386_DS_REGNUM, ds); |
| netbsd_i386_supply_gp (I386_ES_REGNUM, es); |
| netbsd_i386_supply_gp (I386_FS_REGNUM, fs); |
| netbsd_i386_supply_gp (I386_GS_REGNUM, gs); |
| } |
| |
| /* Description of all the x86-netbsd register sets. */ |
| |
| static const struct netbsd_regset_info netbsd_target_regsets[] = |
| { |
| /* General Purpose Registers. */ |
| {PT_GETREGS, PT_SETREGS, sizeof (struct reg), |
| netbsd_i386_fill_gregset, netbsd_i386_store_gregset}, |
| /* End of list marker. */ |
| {0, 0, -1, NULL, NULL } |
| }; |
| |
| /* NetBSD target op definitions for the amd64 architecture. */ |
| |
| class netbsd_i386_target : public netbsd_process_target |
| { |
| public: |
| const netbsd_regset_info *get_regs_info () override; |
| |
| void low_arch_setup () override; |
| }; |
| |
| const netbsd_regset_info * |
| netbsd_i386_target::get_regs_info () |
| { |
| return netbsd_target_regsets; |
| } |
| |
| /* Initialize the target description for the architecture of the |
| inferior. */ |
| |
| void |
| netbsd_i386_target::low_arch_setup () |
| { |
| target_desc *tdesc |
| = i386_create_target_description (X86_XSTATE_SSE_MASK, false, false); |
| |
| init_target_desc (tdesc, i386_expedite_regs); |
| |
| current_process ()->tdesc = tdesc; |
| } |
| |
| /* The singleton target ops object. */ |
| |
| static netbsd_i386_target the_netbsd_i386_target; |
| |
| /* The NetBSD target ops object. */ |
| |
| netbsd_process_target *the_netbsd_target = &the_netbsd_i386_target; |