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

/* Copyright (C) 2007-2012 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);
#else
/* Defined in auto-generated file reg-i386.c.  */
void init_registers_i386 (void);
#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':
      return i386_low_insert_watchpoint (&debug_reg_state,
					 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':
      return i386_low_remove_watchpoint (&debug_reg_state,
					 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
init_windows_x86 (void)
{
#ifdef __x86_64__
  init_registers_amd64 ();
#else
  init_registers_i386 ();
#endif
}

struct win32_target_ops the_low_target = {
  init_windows_x86,
  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
0b302171	1	/* Copyright (C) 2007-2012 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 PM	33	void init_registers_amd64 (void);
54709339 PM	34	#else
d05b4ac3 UW	35	/* Defined in auto-generated file reg-i386.c. */
d05b4ac3 UW	36	void init_registers_i386 (void);
54709339	37	#endif
d05b4ac3	38
aa5ca48f	39	static struct i386_debug_reg_state debug_reg_state;
68070c10	40
34b34921 PA	41	static int debug_registers_changed = 0;
	42	static int debug_registers_used = 0;
	43
aa5ca48f DE	44	/* Update the inferior's debug register REGNUM from STATE. */
	45
	46	void
	47	i386_dr_low_set_addr (const struct i386_debug_reg_state *state, int regnum)
	48	{
	49	if (! (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR))
	50	fatal ("Invalid debug register %d", regnum);
	51
	52	/* debug_reg_state.dr_mirror is already set.
	53	Just notify i386_set_thread_context, i386_thread_added
	54	that the registers need to be updated. */
	55	debug_registers_changed = 1;
	56	debug_registers_used = 1;
	57	}
	58
964e4306 PA	59	CORE_ADDR
	60	i386_dr_low_get_addr (int regnum)
	61	{
0a5b1e09	62	gdb_assert (DR_FIRSTADDR <= regnum && regnum <= DR_LASTADDR);
964e4306 PA	63
	64	return debug_reg_state.dr_mirror[regnum];
	65	}
	66
aa5ca48f DE	67	/* Update the inferior's DR7 debug control register from STATE. */
	68
	69	void
	70	i386_dr_low_set_control (const struct i386_debug_reg_state *state)
	71	{
	72	/* debug_reg_state.dr_control_mirror is already set.
	73	Just notify i386_set_thread_context, i386_thread_added
	74	that the registers need to be updated. */
	75	debug_registers_changed = 1;
	76	debug_registers_used = 1;
	77	}
	78
964e4306 PA	79	unsigned
	80	i386_dr_low_get_control (void)
	81	{
8d26e50c	82	return debug_reg_state.dr_control_mirror;
964e4306 PA	83	}
964e4306 PA	84
aa5ca48f DE	85	/* Get the value of the DR6 debug status register from the inferior
	86	and record it in STATE. */
	87
964e4306 PA	88	unsigned
964e4306 PA	89	i386_dr_low_get_status (void)
aa5ca48f DE	90	{
	91	/* We don't need to do anything here, the last call to thread_rec for
	92	current_event.dwThreadId id has already set it. */
8d26e50c	93	return debug_reg_state.dr_status_mirror;
aa5ca48f DE	94	}
	95
	96	/* Watchpoint support. */
	97
	98	static int
	99	i386_insert_point (char type, CORE_ADDR addr, int len)
	100	{
	101	switch (type)
	102	{
	103	case '2':
	104	case '3':
	105	case '4':
	106	return i386_low_insert_watchpoint (&debug_reg_state,
	107	type, addr, len);
	108	default:
	109	/* Unsupported. */
	110	return 1;
	111	}
	112	}
	113
	114	static int
	115	i386_remove_point (char type, CORE_ADDR addr, int len)
	116	{
	117	switch (type)
	118	{
	119	case '2':
	120	case '3':
	121	case '4':
	122	return i386_low_remove_watchpoint (&debug_reg_state,
	123	type, addr, len);
	124	default:
	125	/* Unsupported. */
	126	return 1;
	127	}
	128	}
	129
	130	static int
	131	i386_stopped_by_watchpoint (void)
	132	{
	133	return i386_low_stopped_by_watchpoint (&debug_reg_state);
	134	}
	135
	136	static CORE_ADDR
	137	i386_stopped_data_address (void)
	138	{
	139	CORE_ADDR addr;
	140	if (i386_low_stopped_data_address (&debug_reg_state, &addr))
	141	return addr;
	142	return 0;
	143	}
	144
68070c10	145	static void
34b34921	146	i386_initial_stuff (void)
68070c10	147	{
aa5ca48f	148	i386_low_init_dregs (&debug_reg_state);
34b34921 PA	149	debug_registers_changed = 0;
34b34921 PA	150	debug_registers_used = 0;
68070c10 PA	151	}
	152
	153	static void
34b34921	154	i386_get_thread_context (win32_thread_info th, DEBUG_EVENT current_event)
68070c10	155	{
912cf4ba PA	156	/* Requesting the CONTEXT_EXTENDED_REGISTERS register set fails if
	157	the system doesn't support extended registers. */
	158	static DWORD extended_registers = CONTEXT_EXTENDED_REGISTERS;
34b34921	159
912cf4ba PA	160	again:
	161	th->context.ContextFlags = (CONTEXT_FULL
	162	\| CONTEXT_FLOATING_POINT
	163	\| CONTEXT_DEBUG_REGISTERS
	164	\| extended_registers);
	165
	166	if (!GetThreadContext (th->h, &th->context))
	167	{
	168	DWORD e = GetLastError ();
	169
	170	if (extended_registers && e == ERROR_INVALID_PARAMETER)
	171	{
	172	extended_registers = 0;
	173	goto again;
	174	}
	175
	176	error ("GetThreadContext failure %ld\n", (long) e);
	177	}
34b34921 PA	178
	179	debug_registers_changed = 0;
	180
	181	if (th->tid == current_event->dwThreadId)
	182	{
	183	/* Copy dr values from the current thread. */
aa5ca48f DE	184	struct i386_debug_reg_state *dr = &debug_reg_state;
	185	dr->dr_mirror[0] = th->context.Dr0;
	186	dr->dr_mirror[1] = th->context.Dr1;
	187	dr->dr_mirror[2] = th->context.Dr2;
	188	dr->dr_mirror[3] = th->context.Dr3;
8d26e50c JB	189	dr->dr_status_mirror = th->context.Dr6;
8d26e50c JB	190	dr->dr_control_mirror = th->context.Dr7;
34b34921	191	}
68070c10 PA	192	}
	193
	194	static void
34b34921	195	i386_set_thread_context (win32_thread_info th, DEBUG_EVENT current_event)
68070c10	196	{
34b34921 PA	197	if (debug_registers_changed)
34b34921 PA	198	{
aa5ca48f DE	199	struct i386_debug_reg_state *dr = &debug_reg_state;
	200	th->context.Dr0 = dr->dr_mirror[0];
	201	th->context.Dr1 = dr->dr_mirror[1];
	202	th->context.Dr2 = dr->dr_mirror[2];
	203	th->context.Dr3 = dr->dr_mirror[3];
8d26e50c	204	/* th->context.Dr6 = dr->dr_status_mirror;
34b34921	205	FIXME: should we set dr6 also ?? */
8d26e50c	206	th->context.Dr7 = dr->dr_control_mirror;
34b34921 PA	207	}
	208
	209	SetThreadContext (th->h, &th->context);
68070c10 PA	210	}
68070c10 PA	211
68070c10	212	static void
34b34921	213	i386_thread_added (win32_thread_info *th)
68070c10	214	{
34b34921 PA	215	/* Set the debug registers for the new thread if they are used. */
34b34921 PA	216	if (debug_registers_used)
68070c10	217	{
aa5ca48f	218	struct i386_debug_reg_state *dr = &debug_reg_state;
34b34921 PA	219	th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
	220	GetThreadContext (th->h, &th->context);
	221
aa5ca48f DE	222	th->context.Dr0 = dr->dr_mirror[0];
	223	th->context.Dr1 = dr->dr_mirror[1];
	224	th->context.Dr2 = dr->dr_mirror[2];
	225	th->context.Dr3 = dr->dr_mirror[3];
8d26e50c	226	/* th->context.Dr6 = dr->dr_status_mirror;
34b34921	227	FIXME: should we set dr6 also ?? */
8d26e50c	228	th->context.Dr7 = dr->dr_control_mirror;
34b34921 PA	229
	230	SetThreadContext (th->h, &th->context);
	231	th->context.ContextFlags = 0;
68070c10	232	}
68070c10 PA	233	}
	234
	235	static void
34b34921	236	i386_single_step (win32_thread_info *th)
68070c10 PA	237	{
	238	th->context.EFlags \|= FLAG_TRACE_BIT;
	239	}
	240
1c07cc19	241	#ifndef __x86_64__
54709339	242
68070c10 PA	243	/* An array of offset mappings into a Win32 Context structure.
	244	This is a one-to-one mapping which is indexed by gdb's register
	245	numbers. It retrieves an offset into the context structure where
	246	the 4 byte register is located.
	247	An offset value of -1 indicates that Win32 does not provide this
	248	register in it's CONTEXT structure. In this case regptr will return
	249	a pointer into a dummy register. */
	250	#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
	251	static const int mappings[] = {
	252	context_offset (Eax),
	253	context_offset (Ecx),
	254	context_offset (Edx),
	255	context_offset (Ebx),
	256	context_offset (Esp),
	257	context_offset (Ebp),
	258	context_offset (Esi),
	259	context_offset (Edi),
	260	context_offset (Eip),
	261	context_offset (EFlags),
	262	context_offset (SegCs),
	263	context_offset (SegSs),
	264	context_offset (SegDs),
	265	context_offset (SegEs),
	266	context_offset (SegFs),
	267	context_offset (SegGs),
	268	context_offset (FloatSave.RegisterArea[0 * 10]),
	269	context_offset (FloatSave.RegisterArea[1 * 10]),
	270	context_offset (FloatSave.RegisterArea[2 * 10]),
	271	context_offset (FloatSave.RegisterArea[3 * 10]),
	272	context_offset (FloatSave.RegisterArea[4 * 10]),
	273	context_offset (FloatSave.RegisterArea[5 * 10]),
	274	context_offset (FloatSave.RegisterArea[6 * 10]),
	275	context_offset (FloatSave.RegisterArea[7 * 10]),
	276	context_offset (FloatSave.ControlWord),
	277	context_offset (FloatSave.StatusWord),
	278	context_offset (FloatSave.TagWord),
	279	context_offset (FloatSave.ErrorSelector),
	280	context_offset (FloatSave.ErrorOffset),
	281	context_offset (FloatSave.DataSelector),
	282	context_offset (FloatSave.DataOffset),
	283	context_offset (FloatSave.ErrorSelector),
	284	/* XMM0-7 */
	285	context_offset (ExtendedRegisters[10 * 16]),
	286	context_offset (ExtendedRegisters[11 * 16]),
	287	context_offset (ExtendedRegisters[12 * 16]),
	288	context_offset (ExtendedRegisters[13 * 16]),
	289	context_offset (ExtendedRegisters[14 * 16]),
	290	context_offset (ExtendedRegisters[15 * 16]),
	291	context_offset (ExtendedRegisters[16 * 16]),
	292	context_offset (ExtendedRegisters[17 * 16]),
	293	/* MXCSR */
	294	context_offset (ExtendedRegisters[24])
	295	};
	296	#undef context_offset
	297
1c07cc19	298	#else /* __x86_64__ */
54709339 PM	299
	300	#define context_offset(x) (offsetof (CONTEXT, x))
	301	static const int mappings[] =
	302	{
	303	context_offset (Rax),
	304	context_offset (Rbx),
	305	context_offset (Rcx),
	306	context_offset (Rdx),
	307	context_offset (Rsi),
	308	context_offset (Rdi),
	309	context_offset (Rbp),
	310	context_offset (Rsp),
	311	context_offset (R8),
	312	context_offset (R9),
	313	context_offset (R10),
	314	context_offset (R11),
	315	context_offset (R12),
	316	context_offset (R13),
	317	context_offset (R14),
	318	context_offset (R15),
	319	context_offset (Rip),
	320	context_offset (EFlags),
	321	context_offset (SegCs),
	322	context_offset (SegSs),
	323	context_offset (SegDs),
	324	context_offset (SegEs),
	325	context_offset (SegFs),
	326	context_offset (SegGs),
	327	context_offset (FloatSave.FloatRegisters[0]),
	328	context_offset (FloatSave.FloatRegisters[1]),
	329	context_offset (FloatSave.FloatRegisters[2]),
	330	context_offset (FloatSave.FloatRegisters[3]),
	331	context_offset (FloatSave.FloatRegisters[4]),
	332	context_offset (FloatSave.FloatRegisters[5]),
	333	context_offset (FloatSave.FloatRegisters[6]),
	334	context_offset (FloatSave.FloatRegisters[7]),
	335	context_offset (FloatSave.ControlWord),
	336	context_offset (FloatSave.StatusWord),
	337	context_offset (FloatSave.TagWord),
	338	context_offset (FloatSave.ErrorSelector),
	339	context_offset (FloatSave.ErrorOffset),
	340	context_offset (FloatSave.DataSelector),
	341	context_offset (FloatSave.DataOffset),
	342	context_offset (FloatSave.ErrorSelector)
	343	/* XMM0-7 */ ,
	344	context_offset (Xmm0),
	345	context_offset (Xmm1),
	346	context_offset (Xmm2),
	347	context_offset (Xmm3),
	348	context_offset (Xmm4),
	349	context_offset (Xmm5),
	350	context_offset (Xmm6),
	351	context_offset (Xmm7),
	352	context_offset (Xmm8),
	353	context_offset (Xmm9),
	354	context_offset (Xmm10),
	355	context_offset (Xmm11),
	356	context_offset (Xmm12),
	357	context_offset (Xmm13),
	358	context_offset (Xmm14),
	359	context_offset (Xmm15),
	360	/* MXCSR */
	361	context_offset (FloatSave.MxCsr)
	362	};
363	#undef context_offset
364
1c07cc19	365	#endif /* __x86_64__ */
54709339	366
34b34921 PA	367	/* Fetch register from gdbserver regcache data. */
34b34921 PA	368	static void
442ea881 PA	369	i386_fetch_inferior_register (struct regcache *regcache,
442ea881 PA	370	win32_thread_info *th, int r)
34b34921 PA	371	{
	372	char context_offset = (char ) &th->context + mappings[r];
	373
	374	long l;
	375	if (r == FCS_REGNUM)
	376	{
	377	l = ((long ) context_offset) & 0xffff;
442ea881	378	supply_register (regcache, r, (char *) &l);
34b34921 PA	379	}
	380	else if (r == FOP_REGNUM)
	381	{
	382	l = (((long ) context_offset) >> 16) & ((1 << 11) - 1);
442ea881	383	supply_register (regcache, r, (char *) &l);
34b34921 PA	384	}
34b34921 PA	385	else
442ea881	386	supply_register (regcache, r, context_offset);
34b34921 PA	387	}
	388
	389	/* Store a new register value into the thread context of TH. */
	390	static void
442ea881 PA	391	i386_store_inferior_register (struct regcache *regcache,
442ea881 PA	392	win32_thread_info *th, int r)
34b34921 PA	393	{
34b34921 PA	394	char context_offset = (char ) &th->context + mappings[r];
442ea881	395	collect_register (regcache, r, context_offset);
34b34921 PA	396	}
34b34921 PA	397
912cf4ba PA	398	static const unsigned char i386_win32_breakpoint = 0xcc;
	399	#define i386_win32_breakpoint_len 1
	400
54709339 PM	401	static void
	402	init_windows_x86 (void)
	403	{
1c07cc19	404	#ifdef __x86_64__
54709339 PM	405	init_registers_amd64 ();
	406	#else
	407	init_registers_i386 ();
	408	#endif
	409	}
	410
68070c10	411	struct win32_target_ops the_low_target = {
54709339	412	init_windows_x86,
68070c10	413	sizeof (mappings) / sizeof (mappings[0]),
34b34921 PA	414	i386_initial_stuff,
	415	i386_get_thread_context,
	416	i386_set_thread_context,
	417	i386_thread_added,
	418	i386_fetch_inferior_register,
	419	i386_store_inferior_register,
	420	i386_single_step,
912cf4ba PA	421	&i386_win32_breakpoint,
912cf4ba PA	422	i386_win32_breakpoint_len,
aa5ca48f DE	423	i386_insert_point,
	424	i386_remove_point,
	425	i386_stopped_by_watchpoint,
	426	i386_stopped_data_address
68070c10	427	};