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netbsd-amd64-low.cc
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/* 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/amd64.h"
#include "x86-tdesc.h"
#include "tdesc.h"
/* The index of various registers inside the regcache. */
enum netbsd_x86_64_gdb_regnum
{
AMD64_RAX_REGNUM, /* %rax */
AMD64_RBX_REGNUM, /* %rbx */
AMD64_RCX_REGNUM, /* %rcx */
AMD64_RDX_REGNUM, /* %rdx */
AMD64_RSI_REGNUM, /* %rsi */
AMD64_RDI_REGNUM, /* %rdi */
AMD64_RBP_REGNUM, /* %rbp */
AMD64_RSP_REGNUM, /* %rsp */
AMD64_R8_REGNUM, /* %r8 */
AMD64_R9_REGNUM, /* %r9 */
AMD64_R10_REGNUM, /* %r10 */
AMD64_R11_REGNUM, /* %r11 */
AMD64_R12_REGNUM, /* %r12 */
AMD64_R13_REGNUM, /* %r13 */
AMD64_R14_REGNUM, /* %r14 */
AMD64_R15_REGNUM, /* %r15 */
AMD64_RIP_REGNUM, /* %rip */
AMD64_EFLAGS_REGNUM, /* %eflags */
AMD64_CS_REGNUM, /* %cs */
AMD64_SS_REGNUM, /* %ss */
AMD64_DS_REGNUM, /* %ds */
AMD64_ES_REGNUM, /* %es */
AMD64_FS_REGNUM, /* %fs */
AMD64_GS_REGNUM, /* %gs */
AMD64_ST0_REGNUM = 24, /* %st0 */
AMD64_ST1_REGNUM, /* %st1 */
AMD64_FCTRL_REGNUM = AMD64_ST0_REGNUM + 8,
AMD64_FSTAT_REGNUM = AMD64_ST0_REGNUM + 9,
AMD64_FTAG_REGNUM = AMD64_ST0_REGNUM + 10,
AMD64_XMM0_REGNUM = 40, /* %xmm0 */
AMD64_XMM1_REGNUM, /* %xmm1 */
AMD64_MXCSR_REGNUM = AMD64_XMM0_REGNUM + 16,
AMD64_YMM0H_REGNUM, /* %ymm0h */
AMD64_YMM15H_REGNUM = AMD64_YMM0H_REGNUM + 15,
/* MPX is deprecated. Yet we keep this to not give the registers below
a new number. That could break older gdbservers. */
AMD64_BND0R_REGNUM = AMD64_YMM15H_REGNUM + 1,
AMD64_BND3R_REGNUM = AMD64_BND0R_REGNUM + 3,
AMD64_BNDCFGU_REGNUM,
AMD64_BNDSTATUS_REGNUM,
AMD64_XMM16_REGNUM,
AMD64_XMM31_REGNUM = AMD64_XMM16_REGNUM + 15,
AMD64_YMM16H_REGNUM,
AMD64_YMM31H_REGNUM = AMD64_YMM16H_REGNUM + 15,
AMD64_K0_REGNUM,
AMD64_K7_REGNUM = AMD64_K0_REGNUM + 7,
AMD64_ZMM0H_REGNUM,
AMD64_ZMM31H_REGNUM = AMD64_ZMM0H_REGNUM + 31,
AMD64_PKRU_REGNUM,
AMD64_FSBASE_REGNUM,
AMD64_GSBASE_REGNUM
};
/* The fill_function for the general-purpose register set. */
static void
netbsd_x86_64_fill_gregset (struct regcache *regcache, char *buf)
{
struct reg *r = (struct reg *) buf;
#define netbsd_x86_64_collect_gp(regnum, fld) do { \
collect_register (regcache, regnum, &r->regs[_REG_##fld]); \
} while (0)
netbsd_x86_64_collect_gp (AMD64_RAX_REGNUM, RAX);
netbsd_x86_64_collect_gp (AMD64_RBX_REGNUM, RBX);
netbsd_x86_64_collect_gp (AMD64_RCX_REGNUM, RCX);
netbsd_x86_64_collect_gp (AMD64_RDX_REGNUM, RDX);
netbsd_x86_64_collect_gp (AMD64_RSI_REGNUM, RSI);
netbsd_x86_64_collect_gp (AMD64_RDI_REGNUM, RDI);
netbsd_x86_64_collect_gp (AMD64_RBP_REGNUM, RBP);
netbsd_x86_64_collect_gp (AMD64_RSP_REGNUM, RSP);
netbsd_x86_64_collect_gp (AMD64_R8_REGNUM, R8);
netbsd_x86_64_collect_gp (AMD64_R9_REGNUM, R9);
netbsd_x86_64_collect_gp (AMD64_R10_REGNUM, R10);
netbsd_x86_64_collect_gp (AMD64_R11_REGNUM, R11);
netbsd_x86_64_collect_gp (AMD64_R12_REGNUM, R12);
netbsd_x86_64_collect_gp (AMD64_R13_REGNUM, R13);
netbsd_x86_64_collect_gp (AMD64_R14_REGNUM, R14);
netbsd_x86_64_collect_gp (AMD64_R15_REGNUM, R15);
netbsd_x86_64_collect_gp (AMD64_RIP_REGNUM, RIP);
netbsd_x86_64_collect_gp (AMD64_EFLAGS_REGNUM, RFLAGS);
netbsd_x86_64_collect_gp (AMD64_CS_REGNUM, CS);
netbsd_x86_64_collect_gp (AMD64_SS_REGNUM, SS);
netbsd_x86_64_collect_gp (AMD64_DS_REGNUM, DS);
netbsd_x86_64_collect_gp (AMD64_ES_REGNUM, ES);
netbsd_x86_64_collect_gp (AMD64_FS_REGNUM, FS);
netbsd_x86_64_collect_gp (AMD64_GS_REGNUM, GS);
}
/* The store_function for the general-purpose register set. */
static void
netbsd_x86_64_store_gregset (struct regcache *regcache, const char *buf)
{
struct reg *r = (struct reg *) buf;
#define netbsd_x86_64_supply_gp(regnum, fld) do { \
supply_register (regcache, regnum, &r->regs[_REG_##fld]); \
} while(0)
netbsd_x86_64_supply_gp (AMD64_RAX_REGNUM, RAX);
netbsd_x86_64_supply_gp (AMD64_RBX_REGNUM, RBX);
netbsd_x86_64_supply_gp (AMD64_RCX_REGNUM, RCX);
netbsd_x86_64_supply_gp (AMD64_RDX_REGNUM, RDX);
netbsd_x86_64_supply_gp (AMD64_RSI_REGNUM, RSI);
netbsd_x86_64_supply_gp (AMD64_RDI_REGNUM, RDI);
netbsd_x86_64_supply_gp (AMD64_RBP_REGNUM, RBP);
netbsd_x86_64_supply_gp (AMD64_RSP_REGNUM, RSP);
netbsd_x86_64_supply_gp (AMD64_R8_REGNUM, R8);
netbsd_x86_64_supply_gp (AMD64_R9_REGNUM, R9);
netbsd_x86_64_supply_gp (AMD64_R10_REGNUM, R10);
netbsd_x86_64_supply_gp (AMD64_R11_REGNUM, R11);
netbsd_x86_64_supply_gp (AMD64_R12_REGNUM, R12);
netbsd_x86_64_supply_gp (AMD64_R13_REGNUM, R13);
netbsd_x86_64_supply_gp (AMD64_R14_REGNUM, R14);
netbsd_x86_64_supply_gp (AMD64_R15_REGNUM, R15);
netbsd_x86_64_supply_gp (AMD64_RIP_REGNUM, RIP);
netbsd_x86_64_supply_gp (AMD64_EFLAGS_REGNUM, RFLAGS);
netbsd_x86_64_supply_gp (AMD64_CS_REGNUM, CS);
netbsd_x86_64_supply_gp (AMD64_SS_REGNUM, SS);
netbsd_x86_64_supply_gp (AMD64_DS_REGNUM, DS);
netbsd_x86_64_supply_gp (AMD64_ES_REGNUM, ES);
netbsd_x86_64_supply_gp (AMD64_FS_REGNUM, FS);
netbsd_x86_64_supply_gp (AMD64_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_x86_64_fill_gregset, netbsd_x86_64_store_gregset},
/* End of list marker. */
{0, 0, -1, NULL, NULL }
};
/* NetBSD target op definitions for the amd64 architecture. */
class netbsd_amd64_target : public netbsd_process_target
{
protected:
const netbsd_regset_info *get_regs_info () override;
void low_arch_setup () override;
};
/* Return the information to access registers. */
const netbsd_regset_info *
netbsd_amd64_target::get_regs_info ()
{
return netbsd_target_regsets;
}
/* Architecture-specific setup for the current process. */
void
netbsd_amd64_target::low_arch_setup ()
{
target_desc *tdesc
= amd64_create_target_description (X86_XSTATE_SSE_MASK, false, false, false);
init_target_desc (tdesc, amd64_expedite_regs, GDB_OSABI_NETBSD);
current_process ()->tdesc = tdesc;
}
/* The singleton target ops object. */
static netbsd_amd64_target the_netbsd_amd64_target;
/* The NetBSD target ops object. */
netbsd_process_target *the_netbsd_target = &the_netbsd_amd64_target;