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

/* Copyright (C) 2007, 2008, 2009, 2010, 2011 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 unsigned dr_status_mirror;
static unsigned dr_control_mirror;

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 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 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;
  dr_status_mirror = 0;
  dr_control_mirror = 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_status_mirror = th->context.Dr6;
      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_status_mirror;
	 FIXME: should we set dr6 also ?? */
      th->context.Dr7 = 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_status_mirror;
	 FIXME: should we set dr6 also ?? */
      th->context.Dr7 = 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
7b6bb8da	1	/* Copyright (C) 2007, 2008, 2009, 2010, 2011 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;
964e4306 PA	40	static unsigned dr_status_mirror;
964e4306 PA	41	static unsigned dr_control_mirror;
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	{
	84	return dr_control_mirror;
	85	}
	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. */
964e4306	95	return 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':
	108	return i386_low_insert_watchpoint (&debug_reg_state,
	109	type, addr, len);
	110	default:
	111	/* Unsupported. */
	112	return 1;
	113	}
	114	}
	115
	116	static int
	117	i386_remove_point (char type, CORE_ADDR addr, int len)
	118	{
	119	switch (type)
	120	{
	121	case '2':
	122	case '3':
	123	case '4':
	124	return i386_low_remove_watchpoint (&debug_reg_state,
	125	type, addr, len);
	126	default:
	127	/* Unsupported. */
	128	return 1;
	129	}
	130	}
	131
	132	static int
	133	i386_stopped_by_watchpoint (void)
	134	{
	135	return i386_low_stopped_by_watchpoint (&debug_reg_state);
	136	}
	137
	138	static CORE_ADDR
	139	i386_stopped_data_address (void)
	140	{
	141	CORE_ADDR addr;
	142	if (i386_low_stopped_data_address (&debug_reg_state, &addr))
	143	return addr;
	144	return 0;
	145	}
	146
68070c10	147	static void
34b34921	148	i386_initial_stuff (void)
68070c10	149	{
aa5ca48f	150	i386_low_init_dregs (&debug_reg_state);
34b34921 PA	151	debug_registers_changed = 0;
34b34921 PA	152	debug_registers_used = 0;
964e4306 PA	153	dr_status_mirror = 0;
964e4306 PA	154	dr_control_mirror = 0;
68070c10 PA	155	}
	156
	157	static void
34b34921	158	i386_get_thread_context (win32_thread_info th, DEBUG_EVENT current_event)
68070c10	159	{
912cf4ba PA	160	/* Requesting the CONTEXT_EXTENDED_REGISTERS register set fails if
	161	the system doesn't support extended registers. */
	162	static DWORD extended_registers = CONTEXT_EXTENDED_REGISTERS;
34b34921	163
912cf4ba PA	164	again:
	165	th->context.ContextFlags = (CONTEXT_FULL
	166	\| CONTEXT_FLOATING_POINT
	167	\| CONTEXT_DEBUG_REGISTERS
	168	\| extended_registers);
	169
	170	if (!GetThreadContext (th->h, &th->context))
	171	{
	172	DWORD e = GetLastError ();
	173
	174	if (extended_registers && e == ERROR_INVALID_PARAMETER)
	175	{
	176	extended_registers = 0;
	177	goto again;
	178	}
	179
	180	error ("GetThreadContext failure %ld\n", (long) e);
	181	}
34b34921 PA	182
	183	debug_registers_changed = 0;
	184
	185	if (th->tid == current_event->dwThreadId)
	186	{
	187	/* Copy dr values from the current thread. */
aa5ca48f DE	188	struct i386_debug_reg_state *dr = &debug_reg_state;
	189	dr->dr_mirror[0] = th->context.Dr0;
	190	dr->dr_mirror[1] = th->context.Dr1;
	191	dr->dr_mirror[2] = th->context.Dr2;
	192	dr->dr_mirror[3] = th->context.Dr3;
964e4306 PA	193	dr_status_mirror = th->context.Dr6;
964e4306 PA	194	dr_control_mirror = th->context.Dr7;
34b34921	195	}
68070c10 PA	196	}
	197
	198	static void
34b34921	199	i386_set_thread_context (win32_thread_info th, DEBUG_EVENT current_event)
68070c10	200	{
34b34921 PA	201	if (debug_registers_changed)
34b34921 PA	202	{
aa5ca48f DE	203	struct i386_debug_reg_state *dr = &debug_reg_state;
	204	th->context.Dr0 = dr->dr_mirror[0];
	205	th->context.Dr1 = dr->dr_mirror[1];
	206	th->context.Dr2 = dr->dr_mirror[2];
	207	th->context.Dr3 = dr->dr_mirror[3];
964e4306	208	/* th->context.Dr6 = dr_status_mirror;
34b34921	209	FIXME: should we set dr6 also ?? */
964e4306	210	th->context.Dr7 = dr_control_mirror;
34b34921 PA	211	}
	212
	213	SetThreadContext (th->h, &th->context);
68070c10 PA	214	}
68070c10 PA	215
68070c10	216	static void
34b34921	217	i386_thread_added (win32_thread_info *th)
68070c10	218	{
34b34921 PA	219	/* Set the debug registers for the new thread if they are used. */
34b34921 PA	220	if (debug_registers_used)
68070c10	221	{
aa5ca48f	222	struct i386_debug_reg_state *dr = &debug_reg_state;
34b34921 PA	223	th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
	224	GetThreadContext (th->h, &th->context);
	225
aa5ca48f DE	226	th->context.Dr0 = dr->dr_mirror[0];
	227	th->context.Dr1 = dr->dr_mirror[1];
	228	th->context.Dr2 = dr->dr_mirror[2];
	229	th->context.Dr3 = dr->dr_mirror[3];
964e4306	230	/* th->context.Dr6 = dr_status_mirror;
34b34921	231	FIXME: should we set dr6 also ?? */
964e4306	232	th->context.Dr7 = dr_control_mirror;
34b34921 PA	233
	234	SetThreadContext (th->h, &th->context);
	235	th->context.ContextFlags = 0;
68070c10	236	}
68070c10 PA	237	}
	238
	239	static void
34b34921	240	i386_single_step (win32_thread_info *th)
68070c10 PA	241	{
	242	th->context.EFlags \|= FLAG_TRACE_BIT;
	243	}
	244
1c07cc19	245	#ifndef __x86_64__
54709339	246
68070c10 PA	247	/* An array of offset mappings into a Win32 Context structure.
	248	This is a one-to-one mapping which is indexed by gdb's register
	249	numbers. It retrieves an offset into the context structure where
	250	the 4 byte register is located.
	251	An offset value of -1 indicates that Win32 does not provide this
	252	register in it's CONTEXT structure. In this case regptr will return
	253	a pointer into a dummy register. */
	254	#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
	255	static const int mappings[] = {
	256	context_offset (Eax),
	257	context_offset (Ecx),
	258	context_offset (Edx),
	259	context_offset (Ebx),
	260	context_offset (Esp),
	261	context_offset (Ebp),
	262	context_offset (Esi),
	263	context_offset (Edi),
	264	context_offset (Eip),
	265	context_offset (EFlags),
	266	context_offset (SegCs),
	267	context_offset (SegSs),
	268	context_offset (SegDs),
	269	context_offset (SegEs),
	270	context_offset (SegFs),
	271	context_offset (SegGs),
	272	context_offset (FloatSave.RegisterArea[0 * 10]),
	273	context_offset (FloatSave.RegisterArea[1 * 10]),
	274	context_offset (FloatSave.RegisterArea[2 * 10]),
	275	context_offset (FloatSave.RegisterArea[3 * 10]),
	276	context_offset (FloatSave.RegisterArea[4 * 10]),
	277	context_offset (FloatSave.RegisterArea[5 * 10]),
	278	context_offset (FloatSave.RegisterArea[6 * 10]),
	279	context_offset (FloatSave.RegisterArea[7 * 10]),
	280	context_offset (FloatSave.ControlWord),
	281	context_offset (FloatSave.StatusWord),
	282	context_offset (FloatSave.TagWord),
	283	context_offset (FloatSave.ErrorSelector),
	284	context_offset (FloatSave.ErrorOffset),
	285	context_offset (FloatSave.DataSelector),
	286	context_offset (FloatSave.DataOffset),
	287	context_offset (FloatSave.ErrorSelector),
	288	/* XMM0-7 */
	289	context_offset (ExtendedRegisters[10 * 16]),
	290	context_offset (ExtendedRegisters[11 * 16]),
	291	context_offset (ExtendedRegisters[12 * 16]),
	292	context_offset (ExtendedRegisters[13 * 16]),
	293	context_offset (ExtendedRegisters[14 * 16]),
	294	context_offset (ExtendedRegisters[15 * 16]),
	295	context_offset (ExtendedRegisters[16 * 16]),
	296	context_offset (ExtendedRegisters[17 * 16]),
	297	/* MXCSR */
	298	context_offset (ExtendedRegisters[24])
	299	};
	300	#undef context_offset
	301
1c07cc19	302	#else /* __x86_64__ */
54709339 PM	303
	304	#define context_offset(x) (offsetof (CONTEXT, x))
	305	static const int mappings[] =
	306	{
	307	context_offset (Rax),
	308	context_offset (Rbx),
	309	context_offset (Rcx),
	310	context_offset (Rdx),
	311	context_offset (Rsi),
	312	context_offset (Rdi),
	313	context_offset (Rbp),
	314	context_offset (Rsp),
	315	context_offset (R8),
	316	context_offset (R9),
	317	context_offset (R10),
	318	context_offset (R11),
	319	context_offset (R12),
	320	context_offset (R13),
	321	context_offset (R14),
	322	context_offset (R15),
	323	context_offset (Rip),
	324	context_offset (EFlags),
	325	context_offset (SegCs),
	326	context_offset (SegSs),
	327	context_offset (SegDs),
	328	context_offset (SegEs),
	329	context_offset (SegFs),
	330	context_offset (SegGs),
	331	context_offset (FloatSave.FloatRegisters[0]),
	332	context_offset (FloatSave.FloatRegisters[1]),
	333	context_offset (FloatSave.FloatRegisters[2]),
	334	context_offset (FloatSave.FloatRegisters[3]),
	335	context_offset (FloatSave.FloatRegisters[4]),
	336	context_offset (FloatSave.FloatRegisters[5]),
	337	context_offset (FloatSave.FloatRegisters[6]),
	338	context_offset (FloatSave.FloatRegisters[7]),
	339	context_offset (FloatSave.ControlWord),
	340	context_offset (FloatSave.StatusWord),
	341	context_offset (FloatSave.TagWord),
	342	context_offset (FloatSave.ErrorSelector),
	343	context_offset (FloatSave.ErrorOffset),
	344	context_offset (FloatSave.DataSelector),
	345	context_offset (FloatSave.DataOffset),
	346	context_offset (FloatSave.ErrorSelector)
	347	/* XMM0-7 */ ,
	348	context_offset (Xmm0),
	349	context_offset (Xmm1),
	350	context_offset (Xmm2),
	351	context_offset (Xmm3),
	352	context_offset (Xmm4),
	353	context_offset (Xmm5),
	354	context_offset (Xmm6),
	355	context_offset (Xmm7),
	356	context_offset (Xmm8),
	357	context_offset (Xmm9),
	358	context_offset (Xmm10),
	359	context_offset (Xmm11),
	360	context_offset (Xmm12),
	361	context_offset (Xmm13),
	362	context_offset (Xmm14),
	363	context_offset (Xmm15),
	364	/* MXCSR */
	365	context_offset (FloatSave.MxCsr)
	366	};
367	#undef context_offset
368
1c07cc19	369	#endif /* __x86_64__ */
54709339	370
34b34921 PA	371	/* Fetch register from gdbserver regcache data. */
34b34921 PA	372	static void
442ea881 PA	373	i386_fetch_inferior_register (struct regcache *regcache,
442ea881 PA	374	win32_thread_info *th, int r)
34b34921 PA	375	{
	376	char context_offset = (char ) &th->context + mappings[r];
	377
	378	long l;
	379	if (r == FCS_REGNUM)
	380	{
	381	l = ((long ) context_offset) & 0xffff;
442ea881	382	supply_register (regcache, r, (char *) &l);
34b34921 PA	383	}
	384	else if (r == FOP_REGNUM)
	385	{
	386	l = (((long ) context_offset) >> 16) & ((1 << 11) - 1);
442ea881	387	supply_register (regcache, r, (char *) &l);
34b34921 PA	388	}
34b34921 PA	389	else
442ea881	390	supply_register (regcache, r, context_offset);
34b34921 PA	391	}
	392
	393	/* Store a new register value into the thread context of TH. */
	394	static void
442ea881 PA	395	i386_store_inferior_register (struct regcache *regcache,
442ea881 PA	396	win32_thread_info *th, int r)
34b34921 PA	397	{
34b34921 PA	398	char context_offset = (char ) &th->context + mappings[r];
442ea881	399	collect_register (regcache, r, context_offset);
34b34921 PA	400	}
34b34921 PA	401
912cf4ba PA	402	static const unsigned char i386_win32_breakpoint = 0xcc;
	403	#define i386_win32_breakpoint_len 1
	404
54709339 PM	405	static void
	406	init_windows_x86 (void)
	407	{
1c07cc19	408	#ifdef __x86_64__
54709339 PM	409	init_registers_amd64 ();
	410	#else
	411	init_registers_i386 ();
	412	#endif
	413	}
	414
68070c10	415	struct win32_target_ops the_low_target = {
54709339	416	init_windows_x86,
68070c10	417	sizeof (mappings) / sizeof (mappings[0]),
34b34921 PA	418	i386_initial_stuff,
	419	i386_get_thread_context,
	420	i386_set_thread_context,
	421	i386_thread_added,
	422	i386_fetch_inferior_register,
	423	i386_store_inferior_register,
	424	i386_single_step,
912cf4ba PA	425	&i386_win32_breakpoint,
912cf4ba PA	426	i386_win32_breakpoint_len,
aa5ca48f DE	427	i386_insert_point,
	428	i386_remove_point,
	429	i386_stopped_by_watchpoint,
	430	i386_stopped_data_address
68070c10	431	};