/* GNU/Linux/x86-64 specific low level interface, for the in-process
   agent library for GDB.

   Copyright (C) 2010 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 "server.h"

/* Defined in auto-generated file amd64-linux.c.  */
void init_registers_amd64_linux (void);

/* fast tracepoints collect registers.  */

#define FT_CR_RIP 0
#define FT_CR_EFLAGS 1
#define FT_CR_R8 2
#define FT_CR_R9 3
#define FT_CR_R10 4
#define FT_CR_R11 5
#define FT_CR_R12 6
#define FT_CR_R13 7
#define FT_CR_R14 8
#define FT_CR_R15 9
#define FT_CR_RAX 10
#define FT_CR_RBX 11
#define FT_CR_RCX 12
#define FT_CR_RDX 13
#define FT_CR_RSI 14
#define FT_CR_RDI 15
#define FT_CR_RBP 16
#define FT_CR_RSP 17

static const int x86_64_ft_collect_regmap[] = {
  FT_CR_RAX * 8, FT_CR_RBX * 8, FT_CR_RCX * 8, FT_CR_RDX * 8,
  FT_CR_RSI * 8, FT_CR_RDI * 8, FT_CR_RBP * 8, FT_CR_RSP * 8,
  FT_CR_R8 * 8,  FT_CR_R9 * 8,  FT_CR_R10 * 8, FT_CR_R11 * 8,
  FT_CR_R12 * 8, FT_CR_R13 * 8, FT_CR_R14 * 8, FT_CR_R15 * 8,
  FT_CR_RIP * 8, FT_CR_EFLAGS * 8
};

#define X86_64_NUM_FT_COLLECT_GREGS \
  (sizeof (x86_64_ft_collect_regmap) / sizeof(x86_64_ft_collect_regmap[0]))

void
supply_fast_tracepoint_registers (struct regcache *regcache,
				  const unsigned char *buf)
{
  int i;

  for (i = 0; i < X86_64_NUM_FT_COLLECT_GREGS; i++)
    supply_register (regcache, i,
		     ((char *) buf) + x86_64_ft_collect_regmap[i]);
}

ULONGEST __attribute__ ((visibility("default"), used))
gdb_agent_get_raw_reg (const unsigned char *raw_regs, int regnum)
{
  if (regnum > X86_64_NUM_FT_COLLECT_GREGS)
    return 0;

  return *(ULONGEST *) (raw_regs + x86_64_ft_collect_regmap[regnum]);
}

/* This is only needed because reg-i386-linux-lib.o references it.  We
   may use it proper at some point.  */
const char *gdbserver_xmltarget;

void
initialize_low_tracepoint (void)
{
  init_registers_amd64_linux ();
}