[deliverable/binutils-gdb.git] / gdb / gdbserver / win32-i386-low.c

/* Copyright (C) 2007-2014 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"
#include "win32-low.h"
#include "i386-low.h"

#ifndef CONTEXT_EXTENDED_REGISTERS
#define CONTEXT_EXTENDED_REGISTERS 0
#endif

#define FCS_REGNUM 27
#define FOP_REGNUM 31

#define FLAG_TRACE_BIT 0x100

#ifdef __x86_64__
/* Defined in auto-generated file reg-amd64.c.  */
void init_registers_amd64 (void);
extern const struct target_desc *tdesc_amd64;
#else
/* Defined in auto-generated file reg-i386.c.  */
void init_registers_i386 (void);
extern const struct target_desc *tdesc_i386;
#endif

static struct i386_debug_reg_state debug_reg_state;

static int debug_registers_changed = 0;
static int debug_registers_used = 0;

/* Update the inferior's debug register REGNUM from STATE.  */

void
i386_dr_low_set_addr (const struct i386_debug_reg_state *state, int regnum)
{
  if (! (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR))
    fatal ("Invalid debug register %d", regnum);

  /* debug_reg_state.dr_mirror is already set.
     Just notify i386_set_thread_context, i386_thread_added
     that the registers need to be updated.  */
  debug_registers_changed = 1;
  debug_registers_used = 1;
}

CORE_ADDR
i386_dr_low_get_addr (int regnum)
{
  gdb_assert (DR_FIRSTADDR <= regnum && regnum <= DR_LASTADDR);

  return debug_reg_state.dr_mirror[regnum];
}

/* Update the inferior's DR7 debug control register from STATE.  */

void
i386_dr_low_set_control (const struct i386_debug_reg_state *state)
{
  /* debug_reg_state.dr_control_mirror is already set.
     Just notify i386_set_thread_context, i386_thread_added
     that the registers need to be updated.  */
  debug_registers_changed = 1;
  debug_registers_used = 1;
}

unsigned
i386_dr_low_get_control (void)
{
  return debug_reg_state.dr_control_mirror;
}

/* Get the value of the DR6 debug status register from the inferior
   and record it in STATE.  */

unsigned
i386_dr_low_get_status (void)
{
  /* We don't need to do anything here, the last call to thread_rec for
     current_event.dwThreadId id has already set it.  */
  return debug_reg_state.dr_status_mirror;
}

/* Watchpoint support.  */

static int
i386_insert_point (char type, CORE_ADDR addr, int len)
{
  switch (type)
    {
    case '2':
    case '3':
    case '4':
      {
	enum target_hw_bp_type hw_type = Z_packet_to_target_hw_bp_type (type);

	return i386_low_insert_watchpoint (&debug_reg_state,
					   hw_type, addr, len);
      }
    default:
      /* Unsupported.  */
      return 1;
    }
}

static int
i386_remove_point (char type, CORE_ADDR addr, int len)
{
  switch (type)
    {
    case '2':
    case '3':
    case '4':
      {
	enum target_hw_bp_type hw_type = Z_packet_to_target_hw_bp_type (type);

	return i386_low_remove_watchpoint (&debug_reg_state,
					   hw_type, addr, len);
      }
    default:
      /* Unsupported.  */
      return 1;
    }
}

static int
i386_stopped_by_watchpoint (void)
{
  return i386_low_stopped_by_watchpoint (&debug_reg_state);
}

static CORE_ADDR
i386_stopped_data_address (void)
{
  CORE_ADDR addr;
  if (i386_low_stopped_data_address (&debug_reg_state, &addr))
    return addr;
  return 0;
}

static void
i386_initial_stuff (void)
{
  i386_low_init_dregs (&debug_reg_state);
  debug_registers_changed = 0;
  debug_registers_used = 0;
}

static void
i386_get_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
{
  /* Requesting the CONTEXT_EXTENDED_REGISTERS register set fails if
     the system doesn't support extended registers.  */
  static DWORD extended_registers = CONTEXT_EXTENDED_REGISTERS;

 again:
  th->context.ContextFlags = (CONTEXT_FULL
			      | CONTEXT_FLOATING_POINT
			      | CONTEXT_DEBUG_REGISTERS
			      | extended_registers);

  if (!GetThreadContext (th->h, &th->context))
    {
      DWORD e = GetLastError ();

      if (extended_registers && e == ERROR_INVALID_PARAMETER)
	{
	  extended_registers = 0;
	  goto again;
	}

      error ("GetThreadContext failure %ld\n", (long) e);
    }

  debug_registers_changed = 0;

  if (th->tid == current_event->dwThreadId)
    {
      /* Copy dr values from the current thread.  */
      struct i386_debug_reg_state *dr = &debug_reg_state;
      dr->dr_mirror[0] = th->context.Dr0;
      dr->dr_mirror[1] = th->context.Dr1;
      dr->dr_mirror[2] = th->context.Dr2;
      dr->dr_mirror[3] = th->context.Dr3;
      dr->dr_status_mirror = th->context.Dr6;
      dr->dr_control_mirror = th->context.Dr7;
    }
}

static void
i386_set_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
{
  if (debug_registers_changed)
    {
      struct i386_debug_reg_state *dr = &debug_reg_state;
      th->context.Dr0 = dr->dr_mirror[0];
      th->context.Dr1 = dr->dr_mirror[1];
      th->context.Dr2 = dr->dr_mirror[2];
      th->context.Dr3 = dr->dr_mirror[3];
      /* th->context.Dr6 = dr->dr_status_mirror;
	 FIXME: should we set dr6 also ?? */
      th->context.Dr7 = dr->dr_control_mirror;
    }

  SetThreadContext (th->h, &th->context);
}

static void
i386_thread_added (win32_thread_info *th)
{
  /* Set the debug registers for the new thread if they are used.  */
  if (debug_registers_used)
    {
      struct i386_debug_reg_state *dr = &debug_reg_state;
      th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
      GetThreadContext (th->h, &th->context);

      th->context.Dr0 = dr->dr_mirror[0];
      th->context.Dr1 = dr->dr_mirror[1];
      th->context.Dr2 = dr->dr_mirror[2];
      th->context.Dr3 = dr->dr_mirror[3];
      /* th->context.Dr6 = dr->dr_status_mirror;
	 FIXME: should we set dr6 also ?? */
      th->context.Dr7 = dr->dr_control_mirror;

      SetThreadContext (th->h, &th->context);
      th->context.ContextFlags = 0;
    }
}

static void
i386_single_step (win32_thread_info *th)
{
  th->context.EFlags |= FLAG_TRACE_BIT;
}

#ifndef __x86_64__

/* An array of offset mappings into a Win32 Context structure.
   This is a one-to-one mapping which is indexed by gdb's register
   numbers.  It retrieves an offset into the context structure where
   the 4 byte register is located.
   An offset value of -1 indicates that Win32 does not provide this
   register in it's CONTEXT structure.  In this case regptr will return
   a pointer into a dummy register.  */
#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
static const int mappings[] = {
  context_offset (Eax),
  context_offset (Ecx),
  context_offset (Edx),
  context_offset (Ebx),
  context_offset (Esp),
  context_offset (Ebp),
  context_offset (Esi),
  context_offset (Edi),
  context_offset (Eip),
  context_offset (EFlags),
  context_offset (SegCs),
  context_offset (SegSs),
  context_offset (SegDs),
  context_offset (SegEs),
  context_offset (SegFs),
  context_offset (SegGs),
  context_offset (FloatSave.RegisterArea[0 * 10]),
  context_offset (FloatSave.RegisterArea[1 * 10]),
  context_offset (FloatSave.RegisterArea[2 * 10]),
  context_offset (FloatSave.RegisterArea[3 * 10]),
  context_offset (FloatSave.RegisterArea[4 * 10]),
  context_offset (FloatSave.RegisterArea[5 * 10]),
  context_offset (FloatSave.RegisterArea[6 * 10]),
  context_offset (FloatSave.RegisterArea[7 * 10]),
  context_offset (FloatSave.ControlWord),
  context_offset (FloatSave.StatusWord),
  context_offset (FloatSave.TagWord),
  context_offset (FloatSave.ErrorSelector),
  context_offset (FloatSave.ErrorOffset),
  context_offset (FloatSave.DataSelector),
  context_offset (FloatSave.DataOffset),
  context_offset (FloatSave.ErrorSelector),
  /* XMM0-7 */
  context_offset (ExtendedRegisters[10 * 16]),
  context_offset (ExtendedRegisters[11 * 16]),
  context_offset (ExtendedRegisters[12 * 16]),
  context_offset (ExtendedRegisters[13 * 16]),
  context_offset (ExtendedRegisters[14 * 16]),
  context_offset (ExtendedRegisters[15 * 16]),
  context_offset (ExtendedRegisters[16 * 16]),
  context_offset (ExtendedRegisters[17 * 16]),
  /* MXCSR */
  context_offset (ExtendedRegisters[24])
};
#undef context_offset

#else /* __x86_64__ */

#define context_offset(x) (offsetof (CONTEXT, x))
static const int mappings[] =
{
  context_offset (Rax),
  context_offset (Rbx),
  context_offset (Rcx),
  context_offset (Rdx),
  context_offset (Rsi),
  context_offset (Rdi),
  context_offset (Rbp),
  context_offset (Rsp),
  context_offset (R8),
  context_offset (R9),
  context_offset (R10),
  context_offset (R11),
  context_offset (R12),
  context_offset (R13),
  context_offset (R14),
  context_offset (R15),
  context_offset (Rip),
  context_offset (EFlags),
  context_offset (SegCs),
  context_offset (SegSs),
  context_offset (SegDs),
  context_offset (SegEs),
  context_offset (SegFs),
  context_offset (SegGs),
  context_offset (FloatSave.FloatRegisters[0]),
  context_offset (FloatSave.FloatRegisters[1]),
  context_offset (FloatSave.FloatRegisters[2]),
  context_offset (FloatSave.FloatRegisters[3]),
  context_offset (FloatSave.FloatRegisters[4]),
  context_offset (FloatSave.FloatRegisters[5]),
  context_offset (FloatSave.FloatRegisters[6]),
  context_offset (FloatSave.FloatRegisters[7]),
  context_offset (FloatSave.ControlWord),
  context_offset (FloatSave.StatusWord),
  context_offset (FloatSave.TagWord),
  context_offset (FloatSave.ErrorSelector),
  context_offset (FloatSave.ErrorOffset),
  context_offset (FloatSave.DataSelector),
  context_offset (FloatSave.DataOffset),
  context_offset (FloatSave.ErrorSelector)
  /* XMM0-7 */ ,
  context_offset (Xmm0),
  context_offset (Xmm1),
  context_offset (Xmm2),
  context_offset (Xmm3),
  context_offset (Xmm4),
  context_offset (Xmm5),
  context_offset (Xmm6),
  context_offset (Xmm7),
  context_offset (Xmm8),
  context_offset (Xmm9),
  context_offset (Xmm10),
  context_offset (Xmm11),
  context_offset (Xmm12),
  context_offset (Xmm13),
  context_offset (Xmm14),
  context_offset (Xmm15),
  /* MXCSR */
  context_offset (FloatSave.MxCsr)
};
#undef context_offset

#endif /* __x86_64__ */

/* Fetch register from gdbserver regcache data.  */
static void
i386_fetch_inferior_register (struct regcache *regcache,
			      win32_thread_info *th, int r)
{
  char *context_offset = (char *) &th->context + mappings[r];

  long l;
  if (r == FCS_REGNUM)
    {
      l = *((long *) context_offset) & 0xffff;
      supply_register (regcache, r, (char *) &l);
    }
  else if (r == FOP_REGNUM)
    {
      l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
      supply_register (regcache, r, (char *) &l);
    }
  else
    supply_register (regcache, r, context_offset);
}

/* Store a new register value into the thread context of TH.  */
static void
i386_store_inferior_register (struct regcache *regcache,
			      win32_thread_info *th, int r)
{
  char *context_offset = (char *) &th->context + mappings[r];
  collect_register (regcache, r, context_offset);
}

static const unsigned char i386_win32_breakpoint = 0xcc;
#define i386_win32_breakpoint_len 1

static void
i386_arch_setup (void)
{
#ifdef __x86_64__
  init_registers_amd64 ();
  win32_tdesc = tdesc_amd64;
#else
  init_registers_i386 ();
  win32_tdesc = tdesc_i386;
#endif
}

struct win32_target_ops the_low_target = {
  i386_arch_setup,
  sizeof (mappings) / sizeof (mappings[0]),
  i386_initial_stuff,
  i386_get_thread_context,
  i386_set_thread_context,
  i386_thread_added,
  i386_fetch_inferior_register,
  i386_store_inferior_register,
  i386_single_step,
  &i386_win32_breakpoint,
  i386_win32_breakpoint_len,
  i386_insert_point,
  i386_remove_point,
  i386_stopped_by_watchpoint,
  i386_stopped_data_address
};
Commit	Line	Data
ecd75fc8	1	/* Copyright (C) 2007-2014 Free Software Foundation, Inc.
68070c10 PA	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
a9762ec7	7	the Free Software Foundation; either version 3 of the License, or
68070c10 PA	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
a9762ec7	16	along with this program. If not, see <http://www.gnu.org/licenses/>. */
68070c10 PA	17
	18	#include "server.h"
	19	#include "win32-low.h"
aa5ca48f	20	#include "i386-low.h"
68070c10	21
54709339 PM	22	#ifndef CONTEXT_EXTENDED_REGISTERS
	23	#define CONTEXT_EXTENDED_REGISTERS 0
	24	#endif
	25
68070c10 PA	26	#define FCS_REGNUM 27
	27	#define FOP_REGNUM 31
	28
	29	#define FLAG_TRACE_BIT 0x100
	30
1c07cc19 PM	31	#ifdef __x86_64__
1c07cc19 PM	32	/* Defined in auto-generated file reg-amd64.c. */
54709339	33	void init_registers_amd64 (void);
3aee8918	34	extern const struct target_desc *tdesc_amd64;
54709339	35	#else
d05b4ac3 UW	36	/* Defined in auto-generated file reg-i386.c. */
d05b4ac3 UW	37	void init_registers_i386 (void);
3aee8918	38	extern const struct target_desc *tdesc_i386;
54709339	39	#endif
d05b4ac3	40
aa5ca48f	41	static struct i386_debug_reg_state debug_reg_state;
68070c10	42
34b34921 PA	43	static int debug_registers_changed = 0;
	44	static int debug_registers_used = 0;
	45
aa5ca48f DE	46	/* Update the inferior's debug register REGNUM from STATE. */
	47
	48	void
	49	i386_dr_low_set_addr (const struct i386_debug_reg_state *state, int regnum)
	50	{
	51	if (! (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR))
	52	fatal ("Invalid debug register %d", regnum);
	53
	54	/* debug_reg_state.dr_mirror is already set.
	55	Just notify i386_set_thread_context, i386_thread_added
	56	that the registers need to be updated. */
	57	debug_registers_changed = 1;
	58	debug_registers_used = 1;
	59	}
	60
964e4306 PA	61	CORE_ADDR
	62	i386_dr_low_get_addr (int regnum)
	63	{
0a5b1e09	64	gdb_assert (DR_FIRSTADDR <= regnum && regnum <= DR_LASTADDR);
964e4306 PA	65
	66	return debug_reg_state.dr_mirror[regnum];
	67	}
	68
aa5ca48f DE	69	/* Update the inferior's DR7 debug control register from STATE. */
	70
	71	void
	72	i386_dr_low_set_control (const struct i386_debug_reg_state *state)
	73	{
	74	/* debug_reg_state.dr_control_mirror is already set.
	75	Just notify i386_set_thread_context, i386_thread_added
	76	that the registers need to be updated. */
	77	debug_registers_changed = 1;
	78	debug_registers_used = 1;
	79	}
	80
964e4306 PA	81	unsigned
	82	i386_dr_low_get_control (void)
	83	{
8d26e50c	84	return debug_reg_state.dr_control_mirror;
964e4306 PA	85	}
964e4306 PA	86
aa5ca48f DE	87	/* Get the value of the DR6 debug status register from the inferior
	88	and record it in STATE. */
	89
964e4306 PA	90	unsigned
964e4306 PA	91	i386_dr_low_get_status (void)
aa5ca48f DE	92	{
	93	/* We don't need to do anything here, the last call to thread_rec for
	94	current_event.dwThreadId id has already set it. */
8d26e50c	95	return debug_reg_state.dr_status_mirror;
aa5ca48f DE	96	}
	97
	98	/* Watchpoint support. */
	99
	100	static int
	101	i386_insert_point (char type, CORE_ADDR addr, int len)
	102	{
	103	switch (type)
	104	{
	105	case '2':
	106	case '3':
	107	case '4':
a4165e94	108	{
932539e3	109	enum target_hw_bp_type hw_type = Z_packet_to_target_hw_bp_type (type);
a4165e94 PA	110
	111	return i386_low_insert_watchpoint (&debug_reg_state,
	112	hw_type, addr, len);
	113	}
aa5ca48f DE	114	default:
	115	/* Unsupported. */
	116	return 1;
	117	}
	118	}
	119
	120	static int
	121	i386_remove_point (char type, CORE_ADDR addr, int len)
	122	{
	123	switch (type)
	124	{
	125	case '2':
	126	case '3':
	127	case '4':
a4165e94	128	{
932539e3	129	enum target_hw_bp_type hw_type = Z_packet_to_target_hw_bp_type (type);
a4165e94 PA	130
	131	return i386_low_remove_watchpoint (&debug_reg_state,
	132	hw_type, addr, len);
	133	}
aa5ca48f DE	134	default:
	135	/* Unsupported. */
	136	return 1;
	137	}
	138	}
	139
	140	static int
	141	i386_stopped_by_watchpoint (void)
	142	{
	143	return i386_low_stopped_by_watchpoint (&debug_reg_state);
	144	}
	145
	146	static CORE_ADDR
	147	i386_stopped_data_address (void)
	148	{
	149	CORE_ADDR addr;
	150	if (i386_low_stopped_data_address (&debug_reg_state, &addr))
	151	return addr;
	152	return 0;
	153	}
	154
68070c10	155	static void
34b34921	156	i386_initial_stuff (void)
68070c10	157	{
aa5ca48f	158	i386_low_init_dregs (&debug_reg_state);
34b34921 PA	159	debug_registers_changed = 0;
34b34921 PA	160	debug_registers_used = 0;
68070c10 PA	161	}
	162
	163	static void
34b34921	164	i386_get_thread_context (win32_thread_info th, DEBUG_EVENT current_event)
68070c10	165	{
912cf4ba PA	166	/* Requesting the CONTEXT_EXTENDED_REGISTERS register set fails if
	167	the system doesn't support extended registers. */
	168	static DWORD extended_registers = CONTEXT_EXTENDED_REGISTERS;
34b34921	169
912cf4ba PA	170	again:
	171	th->context.ContextFlags = (CONTEXT_FULL
	172	\| CONTEXT_FLOATING_POINT
	173	\| CONTEXT_DEBUG_REGISTERS
	174	\| extended_registers);
	175
	176	if (!GetThreadContext (th->h, &th->context))
	177	{
	178	DWORD e = GetLastError ();
	179
	180	if (extended_registers && e == ERROR_INVALID_PARAMETER)
	181	{
	182	extended_registers = 0;
	183	goto again;
	184	}
	185
	186	error ("GetThreadContext failure %ld\n", (long) e);
	187	}
34b34921 PA	188
	189	debug_registers_changed = 0;
	190
	191	if (th->tid == current_event->dwThreadId)
	192	{
	193	/* Copy dr values from the current thread. */
aa5ca48f DE	194	struct i386_debug_reg_state *dr = &debug_reg_state;
	195	dr->dr_mirror[0] = th->context.Dr0;
	196	dr->dr_mirror[1] = th->context.Dr1;
	197	dr->dr_mirror[2] = th->context.Dr2;
	198	dr->dr_mirror[3] = th->context.Dr3;
8d26e50c JB	199	dr->dr_status_mirror = th->context.Dr6;
8d26e50c JB	200	dr->dr_control_mirror = th->context.Dr7;
34b34921	201	}
68070c10 PA	202	}
	203
	204	static void
34b34921	205	i386_set_thread_context (win32_thread_info th, DEBUG_EVENT current_event)
68070c10	206	{
34b34921 PA	207	if (debug_registers_changed)
34b34921 PA	208	{
aa5ca48f DE	209	struct i386_debug_reg_state *dr = &debug_reg_state;
	210	th->context.Dr0 = dr->dr_mirror[0];
	211	th->context.Dr1 = dr->dr_mirror[1];
	212	th->context.Dr2 = dr->dr_mirror[2];
	213	th->context.Dr3 = dr->dr_mirror[3];
8d26e50c	214	/* th->context.Dr6 = dr->dr_status_mirror;
34b34921	215	FIXME: should we set dr6 also ?? */
8d26e50c	216	th->context.Dr7 = dr->dr_control_mirror;
34b34921 PA	217	}
	218
	219	SetThreadContext (th->h, &th->context);
68070c10 PA	220	}
68070c10 PA	221
68070c10	222	static void
34b34921	223	i386_thread_added (win32_thread_info *th)
68070c10	224	{
34b34921 PA	225	/* Set the debug registers for the new thread if they are used. */
34b34921 PA	226	if (debug_registers_used)
68070c10	227	{
aa5ca48f	228	struct i386_debug_reg_state *dr = &debug_reg_state;
34b34921 PA	229	th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
	230	GetThreadContext (th->h, &th->context);
	231
aa5ca48f DE	232	th->context.Dr0 = dr->dr_mirror[0];
	233	th->context.Dr1 = dr->dr_mirror[1];
	234	th->context.Dr2 = dr->dr_mirror[2];
	235	th->context.Dr3 = dr->dr_mirror[3];
8d26e50c	236	/* th->context.Dr6 = dr->dr_status_mirror;
34b34921	237	FIXME: should we set dr6 also ?? */
8d26e50c	238	th->context.Dr7 = dr->dr_control_mirror;
34b34921 PA	239
	240	SetThreadContext (th->h, &th->context);
	241	th->context.ContextFlags = 0;
68070c10	242	}
68070c10 PA	243	}
	244
	245	static void
34b34921	246	i386_single_step (win32_thread_info *th)
68070c10 PA	247	{
	248	th->context.EFlags \|= FLAG_TRACE_BIT;
	249	}
	250
1c07cc19	251	#ifndef __x86_64__
54709339	252
68070c10 PA	253	/* An array of offset mappings into a Win32 Context structure.
	254	This is a one-to-one mapping which is indexed by gdb's register
	255	numbers. It retrieves an offset into the context structure where
	256	the 4 byte register is located.
	257	An offset value of -1 indicates that Win32 does not provide this
	258	register in it's CONTEXT structure. In this case regptr will return
	259	a pointer into a dummy register. */
	260	#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
	261	static const int mappings[] = {
	262	context_offset (Eax),
	263	context_offset (Ecx),
	264	context_offset (Edx),
	265	context_offset (Ebx),
	266	context_offset (Esp),
	267	context_offset (Ebp),
	268	context_offset (Esi),
	269	context_offset (Edi),
	270	context_offset (Eip),
	271	context_offset (EFlags),
	272	context_offset (SegCs),
	273	context_offset (SegSs),
	274	context_offset (SegDs),
	275	context_offset (SegEs),
	276	context_offset (SegFs),
	277	context_offset (SegGs),
	278	context_offset (FloatSave.RegisterArea[0 * 10]),
	279	context_offset (FloatSave.RegisterArea[1 * 10]),
	280	context_offset (FloatSave.RegisterArea[2 * 10]),
	281	context_offset (FloatSave.RegisterArea[3 * 10]),
	282	context_offset (FloatSave.RegisterArea[4 * 10]),
	283	context_offset (FloatSave.RegisterArea[5 * 10]),
	284	context_offset (FloatSave.RegisterArea[6 * 10]),
	285	context_offset (FloatSave.RegisterArea[7 * 10]),
	286	context_offset (FloatSave.ControlWord),
	287	context_offset (FloatSave.StatusWord),
	288	context_offset (FloatSave.TagWord),
	289	context_offset (FloatSave.ErrorSelector),
	290	context_offset (FloatSave.ErrorOffset),
	291	context_offset (FloatSave.DataSelector),
	292	context_offset (FloatSave.DataOffset),
	293	context_offset (FloatSave.ErrorSelector),
	294	/* XMM0-7 */
	295	context_offset (ExtendedRegisters[10 * 16]),
	296	context_offset (ExtendedRegisters[11 * 16]),
	297	context_offset (ExtendedRegisters[12 * 16]),
	298	context_offset (ExtendedRegisters[13 * 16]),
	299	context_offset (ExtendedRegisters[14 * 16]),
	300	context_offset (ExtendedRegisters[15 * 16]),
	301	context_offset (ExtendedRegisters[16 * 16]),
	302	context_offset (ExtendedRegisters[17 * 16]),
	303	/* MXCSR */
	304	context_offset (ExtendedRegisters[24])
	305	};
	306	#undef context_offset
	307
1c07cc19	308	#else /* __x86_64__ */
54709339 PM	309
	310	#define context_offset(x) (offsetof (CONTEXT, x))
	311	static const int mappings[] =
	312	{
	313	context_offset (Rax),
	314	context_offset (Rbx),
	315	context_offset (Rcx),
	316	context_offset (Rdx),
	317	context_offset (Rsi),
	318	context_offset (Rdi),
	319	context_offset (Rbp),
	320	context_offset (Rsp),
	321	context_offset (R8),
	322	context_offset (R9),
	323	context_offset (R10),
	324	context_offset (R11),
	325	context_offset (R12),
	326	context_offset (R13),
	327	context_offset (R14),
	328	context_offset (R15),
	329	context_offset (Rip),
	330	context_offset (EFlags),
	331	context_offset (SegCs),
	332	context_offset (SegSs),
	333	context_offset (SegDs),
	334	context_offset (SegEs),
	335	context_offset (SegFs),
	336	context_offset (SegGs),
	337	context_offset (FloatSave.FloatRegisters[0]),
	338	context_offset (FloatSave.FloatRegisters[1]),
	339	context_offset (FloatSave.FloatRegisters[2]),
	340	context_offset (FloatSave.FloatRegisters[3]),
	341	context_offset (FloatSave.FloatRegisters[4]),
	342	context_offset (FloatSave.FloatRegisters[5]),
	343	context_offset (FloatSave.FloatRegisters[6]),
	344	context_offset (FloatSave.FloatRegisters[7]),
	345	context_offset (FloatSave.ControlWord),
	346	context_offset (FloatSave.StatusWord),
	347	context_offset (FloatSave.TagWord),
	348	context_offset (FloatSave.ErrorSelector),
	349	context_offset (FloatSave.ErrorOffset),
	350	context_offset (FloatSave.DataSelector),
	351	context_offset (FloatSave.DataOffset),
	352	context_offset (FloatSave.ErrorSelector)
	353	/* XMM0-7 */ ,
	354	context_offset (Xmm0),
	355	context_offset (Xmm1),
	356	context_offset (Xmm2),
	357	context_offset (Xmm3),
	358	context_offset (Xmm4),
	359	context_offset (Xmm5),
	360	context_offset (Xmm6),
	361	context_offset (Xmm7),
	362	context_offset (Xmm8),
	363	context_offset (Xmm9),
	364	context_offset (Xmm10),
	365	context_offset (Xmm11),
	366	context_offset (Xmm12),
	367	context_offset (Xmm13),
	368	context_offset (Xmm14),
	369	context_offset (Xmm15),
	370	/* MXCSR */
	371	context_offset (FloatSave.MxCsr)
	372	};
373	#undef context_offset
374
1c07cc19	375	#endif /* __x86_64__ */
54709339	376
34b34921 PA	377	/* Fetch register from gdbserver regcache data. */
34b34921 PA	378	static void
442ea881 PA	379	i386_fetch_inferior_register (struct regcache *regcache,
442ea881 PA	380	win32_thread_info *th, int r)
34b34921 PA	381	{
	382	char context_offset = (char ) &th->context + mappings[r];
	383
	384	long l;
	385	if (r == FCS_REGNUM)
	386	{
	387	l = ((long ) context_offset) & 0xffff;
442ea881	388	supply_register (regcache, r, (char *) &l);
34b34921 PA	389	}
	390	else if (r == FOP_REGNUM)
	391	{
	392	l = (((long ) context_offset) >> 16) & ((1 << 11) - 1);
442ea881	393	supply_register (regcache, r, (char *) &l);
34b34921 PA	394	}
34b34921 PA	395	else
442ea881	396	supply_register (regcache, r, context_offset);
34b34921 PA	397	}
	398
	399	/* Store a new register value into the thread context of TH. */
	400	static void
442ea881 PA	401	i386_store_inferior_register (struct regcache *regcache,
442ea881 PA	402	win32_thread_info *th, int r)
34b34921 PA	403	{
34b34921 PA	404	char context_offset = (char ) &th->context + mappings[r];
442ea881	405	collect_register (regcache, r, context_offset);
34b34921 PA	406	}
34b34921 PA	407
912cf4ba PA	408	static const unsigned char i386_win32_breakpoint = 0xcc;
	409	#define i386_win32_breakpoint_len 1
	410
54709339	411	static void
3aee8918	412	i386_arch_setup (void)
54709339	413	{
1c07cc19	414	#ifdef __x86_64__
54709339	415	init_registers_amd64 ();
3aee8918	416	win32_tdesc = tdesc_amd64;
54709339 PM	417	#else
54709339 PM	418	init_registers_i386 ();
3aee8918	419	win32_tdesc = tdesc_i386;
54709339 PM	420	#endif
	421	}
	422
68070c10	423	struct win32_target_ops the_low_target = {
3aee8918	424	i386_arch_setup,
68070c10	425	sizeof (mappings) / sizeof (mappings[0]),
34b34921 PA	426	i386_initial_stuff,
	427	i386_get_thread_context,
	428	i386_set_thread_context,
	429	i386_thread_added,
	430	i386_fetch_inferior_register,
	431	i386_store_inferior_register,
	432	i386_single_step,
912cf4ba PA	433	&i386_win32_breakpoint,
912cf4ba PA	434	i386_win32_breakpoint_len,
aa5ca48f DE	435	i386_insert_point,
	436	i386_remove_point,
	437	i386_stopped_by_watchpoint,
	438	i386_stopped_data_address
68070c10	439	};