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/* Copyright (C) 2020-2023 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 "server.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;
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