[deliverable/binutils-gdb.git] / gdb / windows-tdep.c

/* Copyright (C) 2008, 2009, 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 "defs.h"
#include "windows-tdep.h"
#include "gdb_obstack.h"
#include "xml-support.h"
#include "gdbarch.h"
#include "target.h"
#include "value.h"
#include "inferior.h"
#include "command.h"
#include "gdbcmd.h"
#include "gdbthread.h"

struct cmd_list_element *info_w32_cmdlist;

typedef struct thread_information_block_32
  {
    uint32_t current_seh;			/* %fs:0x0000 */
    uint32_t current_top_of_stack; 		/* %fs:0x0004 */
    uint32_t current_bottom_of_stack;		/* %fs:0x0008 */
    uint32_t sub_system_tib;			/* %fs:0x000c */
    uint32_t fiber_data;			/* %fs:0x0010 */
    uint32_t arbitrary_data_slot;		/* %fs:0x0014 */
    uint32_t linear_address_tib;		/* %fs:0x0018 */
    uint32_t environment_pointer;		/* %fs:0x001c */
    uint32_t process_id;			/* %fs:0x0020 */
    uint32_t current_thread_id;			/* %fs:0x0024 */
    uint32_t active_rpc_handle;			/* %fs:0x0028 */
    uint32_t thread_local_storage;		/* %fs:0x002c */
    uint32_t process_environment_block;		/* %fs:0x0030 */
    uint32_t last_error_number;			/* %fs:0x0034 */
  }
thread_information_32;

typedef struct thread_information_block_64
  {
    uint64_t current_seh;			/* %gs:0x0000 */
    uint64_t current_top_of_stack; 		/* %gs:0x0008 */
    uint64_t current_bottom_of_stack;		/* %gs:0x0010 */
    uint64_t sub_system_tib;			/* %gs:0x0018 */
    uint64_t fiber_data;			/* %gs:0x0020 */
    uint64_t arbitrary_data_slot;		/* %gs:0x0028 */
    uint64_t linear_address_tib;		/* %gs:0x0030 */
    uint64_t environment_pointer;		/* %gs:0x0038 */
    uint64_t process_id;			/* %gs:0x0040 */
    uint64_t current_thread_id;			/* %gs:0x0048 */
    uint64_t active_rpc_handle;			/* %gs:0x0050 */
    uint64_t thread_local_storage;		/* %gs:0x0058 */
    uint64_t process_environment_block;		/* %gs:0x0060 */
    uint64_t last_error_number;			/* %gs:0x0068 */
  }
thread_information_64;


static const char* TIB_NAME[] =
  {
    " current_seh                 ",	/* %fs:0x0000 */
    " current_top_of_stack        ", 	/* %fs:0x0004 */
    " current_bottom_of_stack     ",	/* %fs:0x0008 */
    " sub_system_tib              ",	/* %fs:0x000c */
    " fiber_data                  ",	/* %fs:0x0010 */
    " arbitrary_data_slot         ",	/* %fs:0x0014 */
    " linear_address_tib          ",	/* %fs:0x0018 */
    " environment_pointer         ",	/* %fs:0x001c */
    " process_id                  ",	/* %fs:0x0020 */
    " current_thread_id           ",	/* %fs:0x0024 */
    " active_rpc_handle           ",	/* %fs:0x0028 */
    " thread_local_storage        ",	/* %fs:0x002c */
    " process_environment_block   ",	/* %fs:0x0030 */
    " last_error_number           "	/* %fs:0x0034 */
  };

static const int MAX_TIB32 = sizeof (thread_information_32) / sizeof (uint32_t);
static const int MAX_TIB64 = sizeof (thread_information_64) / sizeof (uint64_t);
static const int FULL_TIB_SIZE = 0x1000;

static int maint_display_all_tib = 0;

/* Define Thread Local Base pointer type.  */

static struct type *
windows_get_tlb_type (struct gdbarch *gdbarch)
{
  struct type *dword_ptr_type, *dword32_type, *void_ptr_type;
  struct type *peb_ldr_type, *peb_ldr_ptr_type;
  struct type *peb_type, *peb_ptr_type, *list_type, *list_ptr_type;
  struct type *module_list_ptr_type;
  struct type *tib_type, *seh_type, *tib_ptr_type, *seh_ptr_type;

  dword_ptr_type = arch_integer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
				 1, "DWORD_PTR");
  dword32_type = arch_integer_type (gdbarch, 32,
				 1, "DWORD32");
  void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);

  /* list entry */

  list_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
  TYPE_NAME (list_type) = xstrdup ("list");

  list_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
			    TYPE_LENGTH (void_ptr_type), NULL);

  module_list_ptr_type = void_ptr_type;

  append_composite_type_field (list_type, "forward_list", module_list_ptr_type);
  append_composite_type_field (list_type, "backward_list",
			       module_list_ptr_type);

  /* Structured Exception Handler */

  seh_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
  TYPE_NAME (seh_type) = xstrdup ("seh");

  seh_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
			    TYPE_LENGTH (void_ptr_type), NULL);
  TYPE_TARGET_TYPE (seh_ptr_type) = seh_type;

  append_composite_type_field (seh_type, "next_seh", seh_ptr_type);
  append_composite_type_field (seh_type, "handler", void_ptr_type);

  /* struct _PEB_LDR_DATA */
  peb_ldr_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
  TYPE_NAME (peb_ldr_type) = xstrdup ("peb_ldr_data");

  append_composite_type_field (peb_ldr_type, "length", dword32_type);
  append_composite_type_field (peb_ldr_type, "initialized", dword32_type);
  append_composite_type_field (peb_ldr_type, "ss_handle", void_ptr_type);
  append_composite_type_field (peb_ldr_type, "in_load_order", list_type);
  append_composite_type_field (peb_ldr_type, "in_memory_order", list_type);
  append_composite_type_field (peb_ldr_type, "in_init_order", list_type);
  append_composite_type_field (peb_ldr_type, "entry_in_progress",
			       void_ptr_type);
  peb_ldr_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
			    TYPE_LENGTH (void_ptr_type), NULL);
  TYPE_TARGET_TYPE (peb_ldr_ptr_type) = peb_ldr_type;


  /* struct process environment block */
  peb_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
  TYPE_NAME (peb_type) = xstrdup ("peb");

  /* First bytes contain several flags.  */
  append_composite_type_field (peb_type, "flags", dword_ptr_type);
  append_composite_type_field (peb_type, "mutant", void_ptr_type);
  append_composite_type_field (peb_type, "image_base_address", void_ptr_type);
  append_composite_type_field (peb_type, "ldr", peb_ldr_ptr_type);
  append_composite_type_field (peb_type, "process_parameters", void_ptr_type);
  append_composite_type_field (peb_type, "sub_system_data", void_ptr_type);
  append_composite_type_field (peb_type, "process_heap", void_ptr_type);
  append_composite_type_field (peb_type, "fast_peb_lock", void_ptr_type);
  peb_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
			    TYPE_LENGTH (void_ptr_type), NULL);
  TYPE_TARGET_TYPE (peb_ptr_type) = peb_type;


  /* struct thread information block */
  tib_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
  TYPE_NAME (tib_type) = xstrdup ("tib");

  /* uint32_t current_seh;			%fs:0x0000 */
  append_composite_type_field (tib_type, "current_seh", seh_ptr_type);
  /* uint32_t current_top_of_stack; 		%fs:0x0004 */
  append_composite_type_field (tib_type, "current_top_of_stack", void_ptr_type);
  /* uint32_t current_bottom_of_stack;		%fs:0x0008 */
  append_composite_type_field (tib_type, "current_bottom_of_stack",
			       void_ptr_type);
  /* uint32_t sub_system_tib;			%fs:0x000c */
  append_composite_type_field (tib_type, "sub_system_tib", void_ptr_type);

  /* uint32_t fiber_data;			%fs:0x0010 */
  append_composite_type_field (tib_type, "fiber_data", void_ptr_type);
  /* uint32_t arbitrary_data_slot;		%fs:0x0014 */
  append_composite_type_field (tib_type, "arbitrary_data_slot", void_ptr_type);
  /* uint32_t linear_address_tib;		%fs:0x0018 */
  append_composite_type_field (tib_type, "linear_address_tib", void_ptr_type);
  /* uint32_t environment_pointer;		%fs:0x001c */
  append_composite_type_field (tib_type, "environment_pointer", void_ptr_type);
  /* uint32_t process_id;			%fs:0x0020 */
  append_composite_type_field (tib_type, "process_id", dword_ptr_type);
  /* uint32_t current_thread_id;		%fs:0x0024 */
  append_composite_type_field (tib_type, "thread_id", dword_ptr_type);
  /* uint32_t active_rpc_handle;		%fs:0x0028 */
  append_composite_type_field (tib_type, "active_rpc_handle", dword_ptr_type);
  /* uint32_t thread_local_storage;		%fs:0x002c */
  append_composite_type_field (tib_type, "thread_local_storage", void_ptr_type);
  /* uint32_t process_environment_block;	%fs:0x0030 */
  append_composite_type_field (tib_type, "process_environment_block",
			       peb_ptr_type);
  /* uint32_t last_error_number;		%fs:0x0034 */
  append_composite_type_field (tib_type, "last_error_number", dword_ptr_type);

  tib_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
			    TYPE_LENGTH (void_ptr_type), NULL);
  TYPE_TARGET_TYPE (tib_ptr_type) = tib_type;

  return tib_ptr_type;
}

/* The $_tlb convenience variable is a bit special.  We don't know
   for sure the type of the value until we actually have a chance to
   fetch the data.  The type can change depending on gdbarch, so it is
   also dependent on which thread you have selected.  */

/* This function implements the lval_computed support for reading a
   $_tlb value.  */

static void
tlb_value_read (struct value *val)
{
  CORE_ADDR tlb;
  struct type *type = check_typedef (value_type (val));

  if (!target_get_tib_address (inferior_ptid, &tlb))
    error (_("Unable to read tlb"));
  store_typed_address (value_contents_raw (val), type, tlb);
}

/* This function implements the lval_computed support for writing a
   $_tlb value.  */

static void
tlb_value_write (struct value *v, struct value *fromval)
{
  error (_("Impossible to change the Thread Local Base"));
}

static struct lval_funcs tlb_value_funcs =
  {
    tlb_value_read,
    tlb_value_write
  };


/* Return a new value with the correct type for the tlb object of
   the current thread using architecture GDBARCH.  Return a void value
   if there's no object available.  */

static struct value *
tlb_make_value (struct gdbarch *gdbarch, struct internalvar *var)
{
  if (target_has_stack && !ptid_equal (inferior_ptid, null_ptid))
    {
      struct type *type = windows_get_tlb_type (gdbarch);
      return allocate_computed_value (type, &tlb_value_funcs, NULL);
    }

  return allocate_value (builtin_type (gdbarch)->builtin_void);
}


/* Display thread information block of a given thread.  */

static int
display_one_tib (ptid_t ptid)
{
  gdb_byte *tib = NULL;
  gdb_byte *index;
  CORE_ADDR thread_local_base;
  ULONGEST i, val, max, max_name, size, tib_size;
  ULONGEST sizeof_ptr = gdbarch_ptr_bit (target_gdbarch);
  enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);

  if (sizeof_ptr == 64)
    {
      size = sizeof (uint64_t);
      tib_size = sizeof (thread_information_64);
      max = MAX_TIB64;
    }
  else
    {
      size = sizeof (uint32_t);
      tib_size = sizeof (thread_information_32);
      max = MAX_TIB32;
    }

  max_name = max;

  if (maint_display_all_tib)
    {
      tib_size = FULL_TIB_SIZE;
      max = tib_size / size;
    }
  
  tib = alloca (tib_size);

  if (target_get_tib_address (ptid, &thread_local_base) == 0)
    {
      printf_filtered (_("Unable to get thread local base for %s\n"),
	target_pid_to_str (ptid));
      return -1;
    }

  if (target_read (&current_target, TARGET_OBJECT_MEMORY,
		   NULL, tib, thread_local_base, tib_size) != tib_size)
    {
      printf_filtered (_("Unable to read thread information block for %s at \
address %s\n"),
	target_pid_to_str (ptid), 
	paddress (target_gdbarch, thread_local_base));
      return -1;
    }

  printf_filtered (_("Thread Information Block %s at %s\n"),
		   target_pid_to_str (ptid),
		   paddress (target_gdbarch, thread_local_base));

  index = (gdb_byte *) tib;

  /* All fields have the size of a pointer, this allows to iterate 
     using the same for loop for both layouts.  */
  for (i = 0; i < max; i++)
    {
      val = extract_unsigned_integer (index, size, byte_order);
      if (i < max_name)
	printf_filtered (_("%s is 0x%s\n"), TIB_NAME[i], phex (val, size));
      else if (val != 0)
	printf_filtered (_("TIB[0x%s] is 0x%s\n"), phex (i * size, 2),
			 phex (val, size));
      index += size;
    } 
  return 1;  
}

/* Display thread information block of a thread specified by ARGS.
   If ARGS is empty, display thread information block of current_thread
   if current_thread is non NULL.
   Otherwise ARGS is parsed and converted to a integer that should
   be the windows ThreadID (not the internal GDB thread ID).  */

static void
display_tib (char * args, int from_tty)
{
  if (args)
    {
      struct thread_info *tp;
      int gdb_id = value_as_long (parse_and_eval (args));

      tp = find_thread_id (gdb_id);

      if (!tp)
	error (_("Thread ID %d not known."), gdb_id);

      if (!target_thread_alive (tp->ptid))
	error (_("Thread ID %d has terminated."), gdb_id);

      display_one_tib (tp->ptid);
    }
  else if (!ptid_equal (inferior_ptid, null_ptid))
    display_one_tib (inferior_ptid);
}

void
windows_xfer_shared_library (const char* so_name, CORE_ADDR load_addr,
			     struct gdbarch *gdbarch, struct obstack *obstack)
{
  char *p;
  obstack_grow_str (obstack, "<library name=\"");
  p = xml_escape_text (so_name);
  obstack_grow_str (obstack, p);
  xfree (p);
  obstack_grow_str (obstack, "\"><segment address=\"");
  /* The symbols in a dll are offset by 0x1000, which is the the
     offset from 0 of the first byte in an image - because of the file
     header and the section alignment. */
  obstack_grow_str (obstack, paddress (gdbarch, load_addr + 0x1000));
  obstack_grow_str (obstack, "\"/></library>");
}

static void
show_maint_show_all_tib (struct ui_file *file, int from_tty,
		struct cmd_list_element *c, const char *value)
{
  fprintf_filtered (file, _("Show all non-zero elements of Thread Information \
Block is %s.\n"), value);
}

static void
info_w32_command (char *args, int from_tty)
{
  help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
}

static int w32_prefix_command_valid = 0;
void
init_w32_command_list (void)
{
  if (!w32_prefix_command_valid)
    {
      add_prefix_cmd ("w32", class_info, info_w32_command,
		      _("Print information specific to Win32 debugging."),
		      &info_w32_cmdlist, "info w32 ", 0, &infolist);
      w32_prefix_command_valid = 1;
    }
}

void
_initialize_windows_tdep (void)
{
  init_w32_command_list ();
  add_cmd ("thread-information-block", class_info, display_tib,
	   _("Display thread information block."),
	   &info_w32_cmdlist);
  add_alias_cmd ("tib", "thread-information-block", class_info, 1,
		 &info_w32_cmdlist);

  add_setshow_boolean_cmd ("show-all-tib", class_maintenance,
			   &maint_display_all_tib, _("\
Set whether to display all non-zero fields of thread information block."), _("\
Show whether to display all non-zero fields of thread information block."), _("\
Use \"on\" to enable, \"off\" to disable.\n\
If enabled, all non-zero fields of thread information block are displayed,\n\
even if their meaning is unknown."),
			   NULL,
			   show_maint_show_all_tib,
			   &maintenance_set_cmdlist,
			   &maintenance_show_cmdlist);

  /* Explicitly create without lookup, since that tries to create a
     value with a void typed value, and when we get here, gdbarch
     isn't initialized yet.  At this point, we're quite sure there
     isn't another convenience variable of the same name.  */
  create_internalvar_type_lazy ("_tlb", tlb_make_value);
}
Commit	Line	Data
4c38e0a4	1	/* Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
bfb87e33 JB	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
	7	the Free Software Foundation; either version 3 of the License, or
	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
	16	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	17
	18	#include "defs.h"
31b060a2	19	#include "windows-tdep.h"
bfb87e33 JB	20	#include "gdb_obstack.h"
bfb87e33 JB	21	#include "xml-support.h"
711e434b PM	22	#include "gdbarch.h"
	23	#include "target.h"
	24	#include "value.h"
	25	#include "inferior.h"
	26	#include "command.h"
	27	#include "gdbcmd.h"
	28	#include "gdbthread.h"
	29
	30	struct cmd_list_element *info_w32_cmdlist;
	31
	32	typedef struct thread_information_block_32
	33	{
	34	uint32_t current_seh; /* %fs:0x0000 */
	35	uint32_t current_top_of_stack; /* %fs:0x0004 */
	36	uint32_t current_bottom_of_stack; /* %fs:0x0008 */
	37	uint32_t sub_system_tib; /* %fs:0x000c */
	38	uint32_t fiber_data; /* %fs:0x0010 */
	39	uint32_t arbitrary_data_slot; /* %fs:0x0014 */
	40	uint32_t linear_address_tib; /* %fs:0x0018 */
	41	uint32_t environment_pointer; /* %fs:0x001c */
	42	uint32_t process_id; /* %fs:0x0020 */
	43	uint32_t current_thread_id; /* %fs:0x0024 */
	44	uint32_t active_rpc_handle; /* %fs:0x0028 */
	45	uint32_t thread_local_storage; /* %fs:0x002c */
	46	uint32_t process_environment_block; /* %fs:0x0030 */
	47	uint32_t last_error_number; /* %fs:0x0034 */
	48	}
	49	thread_information_32;
	50
	51	typedef struct thread_information_block_64
	52	{
	53	uint64_t current_seh; /* %gs:0x0000 */
	54	uint64_t current_top_of_stack; /* %gs:0x0008 */
	55	uint64_t current_bottom_of_stack; /* %gs:0x0010 */
	56	uint64_t sub_system_tib; /* %gs:0x0018 */
	57	uint64_t fiber_data; /* %gs:0x0020 */
	58	uint64_t arbitrary_data_slot; /* %gs:0x0028 */
	59	uint64_t linear_address_tib; /* %gs:0x0030 */
	60	uint64_t environment_pointer; /* %gs:0x0038 */
	61	uint64_t process_id; /* %gs:0x0040 */
	62	uint64_t current_thread_id; /* %gs:0x0048 */
	63	uint64_t active_rpc_handle; /* %gs:0x0050 */
	64	uint64_t thread_local_storage; /* %gs:0x0058 */
	65	uint64_t process_environment_block; /* %gs:0x0060 */
	66	uint64_t last_error_number; /* %gs:0x0068 */
	67	}
	68	thread_information_64;
	69
	70
	71	static const char* TIB_NAME[] =
	72	{
	73	" current_seh ", /* %fs:0x0000 */
	74	" current_top_of_stack ", /* %fs:0x0004 */
	75	" current_bottom_of_stack ", /* %fs:0x0008 */
	76	" sub_system_tib ", /* %fs:0x000c */
	77	" fiber_data ", /* %fs:0x0010 */
	78	" arbitrary_data_slot ", /* %fs:0x0014 */
	79	" linear_address_tib ", /* %fs:0x0018 */
	80	" environment_pointer ", /* %fs:0x001c */
	81	" process_id ", /* %fs:0x0020 */
	82	" current_thread_id ", /* %fs:0x0024 */
	83	" active_rpc_handle ", /* %fs:0x0028 */
	84	" thread_local_storage ", /* %fs:0x002c */
	85	" process_environment_block ", /* %fs:0x0030 */
86	" last_error_number " /* %fs:0x0034 */
87	};
88
89	static const int MAX_TIB32 = sizeof (thread_information_32) / sizeof (uint32_t);
90	static const int MAX_TIB64 = sizeof (thread_information_64) / sizeof (uint64_t);
91	static const int FULL_TIB_SIZE = 0x1000;
92
93	static int maint_display_all_tib = 0;
94
95	/* Define Thread Local Base pointer type. */
96
97	static struct type *
98	windows_get_tlb_type (struct gdbarch *gdbarch)
99	{
100	struct type dword_ptr_type, dword32_type, *void_ptr_type;
101	struct type peb_ldr_type, peb_ldr_ptr_type;
102	struct type peb_type, peb_ptr_type, list_type, list_ptr_type;
103	struct type *module_list_ptr_type;
104	struct type tib_type, seh_type, tib_ptr_type, seh_ptr_type;
105
106	dword_ptr_type = arch_integer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
107	1, "DWORD_PTR");
108	dword32_type = arch_integer_type (gdbarch, 32,
109	1, "DWORD32");
110	void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
111
112	/* list entry */
113
114	list_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
115	TYPE_NAME (list_type) = xstrdup ("list");
116
117	list_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
118	TYPE_LENGTH (void_ptr_type), NULL);
119
120	module_list_ptr_type = void_ptr_type;
121
122	append_composite_type_field (list_type, "forward_list", module_list_ptr_type);
123	append_composite_type_field (list_type, "backward_list",
124	module_list_ptr_type);
125
126	/* Structured Exception Handler */
127
128	seh_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
129	TYPE_NAME (seh_type) = xstrdup ("seh");
130
131	seh_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
132	TYPE_LENGTH (void_ptr_type), NULL);
133	TYPE_TARGET_TYPE (seh_ptr_type) = seh_type;
134
135	append_composite_type_field (seh_type, "next_seh", seh_ptr_type);
136	append_composite_type_field (seh_type, "handler", void_ptr_type);
137
138	/* struct _PEB_LDR_DATA */
139	peb_ldr_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
140	TYPE_NAME (peb_ldr_type) = xstrdup ("peb_ldr_data");
141
142	append_composite_type_field (peb_ldr_type, "length", dword32_type);
143	append_composite_type_field (peb_ldr_type, "initialized", dword32_type);
144	append_composite_type_field (peb_ldr_type, "ss_handle", void_ptr_type);
145	append_composite_type_field (peb_ldr_type, "in_load_order", list_type);
146	append_composite_type_field (peb_ldr_type, "in_memory_order", list_type);
147	append_composite_type_field (peb_ldr_type, "in_init_order", list_type);
148	append_composite_type_field (peb_ldr_type, "entry_in_progress",
149	void_ptr_type);
150	peb_ldr_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
151	TYPE_LENGTH (void_ptr_type), NULL);
152	TYPE_TARGET_TYPE (peb_ldr_ptr_type) = peb_ldr_type;
153
154
155	/* struct process environment block */
156	peb_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
157	TYPE_NAME (peb_type) = xstrdup ("peb");
158
159	/* First bytes contain several flags. */
160	append_composite_type_field (peb_type, "flags", dword_ptr_type);
161	append_composite_type_field (peb_type, "mutant", void_ptr_type);
162	append_composite_type_field (peb_type, "image_base_address", void_ptr_type);
163	append_composite_type_field (peb_type, "ldr", peb_ldr_ptr_type);
164	append_composite_type_field (peb_type, "process_parameters", void_ptr_type);
165	append_composite_type_field (peb_type, "sub_system_data", void_ptr_type);
166	append_composite_type_field (peb_type, "process_heap", void_ptr_type);
167	append_composite_type_field (peb_type, "fast_peb_lock", void_ptr_type);
168	peb_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
169	TYPE_LENGTH (void_ptr_type), NULL);
170	TYPE_TARGET_TYPE (peb_ptr_type) = peb_type;
171
172
173	/* struct thread information block */
174	tib_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
175	TYPE_NAME (tib_type) = xstrdup ("tib");
176
177	/* uint32_t current_seh; %fs:0x0000 */
178	append_composite_type_field (tib_type, "current_seh", seh_ptr_type);
179	/* uint32_t current_top_of_stack; %fs:0x0004 */
180	append_composite_type_field (tib_type, "current_top_of_stack", void_ptr_type);
181	/* uint32_t current_bottom_of_stack; %fs:0x0008 */
182	append_composite_type_field (tib_type, "current_bottom_of_stack",
183	void_ptr_type);
184	/* uint32_t sub_system_tib; %fs:0x000c */
185	append_composite_type_field (tib_type, "sub_system_tib", void_ptr_type);
186
187	/* uint32_t fiber_data; %fs:0x0010 */
188	append_composite_type_field (tib_type, "fiber_data", void_ptr_type);
189	/* uint32_t arbitrary_data_slot; %fs:0x0014 */
190	append_composite_type_field (tib_type, "arbitrary_data_slot", void_ptr_type);
191	/* uint32_t linear_address_tib; %fs:0x0018 */
192	append_composite_type_field (tib_type, "linear_address_tib", void_ptr_type);
193	/* uint32_t environment_pointer; %fs:0x001c */
194	append_composite_type_field (tib_type, "environment_pointer", void_ptr_type);
195	/* uint32_t process_id; %fs:0x0020 */
196	append_composite_type_field (tib_type, "process_id", dword_ptr_type);
197	/* uint32_t current_thread_id; %fs:0x0024 */
198	append_composite_type_field (tib_type, "thread_id", dword_ptr_type);
199	/* uint32_t active_rpc_handle; %fs:0x0028 */
200	append_composite_type_field (tib_type, "active_rpc_handle", dword_ptr_type);
201	/* uint32_t thread_local_storage; %fs:0x002c */
202	append_composite_type_field (tib_type, "thread_local_storage", void_ptr_type);
203	/* uint32_t process_environment_block; %fs:0x0030 */
204	append_composite_type_field (tib_type, "process_environment_block",
205	peb_ptr_type);
206	/* uint32_t last_error_number; %fs:0x0034 */
207	append_composite_type_field (tib_type, "last_error_number", dword_ptr_type);
208
209	tib_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
210	TYPE_LENGTH (void_ptr_type), NULL);
211	TYPE_TARGET_TYPE (tib_ptr_type) = tib_type;
212
213	return tib_ptr_type;
214	}
215
216	/* The $_tlb convenience variable is a bit special. We don't know
217	for sure the type of the value until we actually have a chance to
218	fetch the data. The type can change depending on gdbarch, so it is
219	also dependent on which thread you have selected. */
220
221	/* This function implements the lval_computed support for reading a
222	$_tlb value. */
223
224	static void
225	tlb_value_read (struct value *val)
226	{
227	CORE_ADDR tlb;
228	struct type *type = check_typedef (value_type (val));
229
230	if (!target_get_tib_address (inferior_ptid, &tlb))
231	error (_("Unable to read tlb"));
232	store_typed_address (value_contents_raw (val), type, tlb);
233	}
234
235	/* This function implements the lval_computed support for writing a
236	$_tlb value. */
237
238	static void
239	tlb_value_write (struct value v, struct value fromval)
240	{
241	error (_("Impossible to change the Thread Local Base"));
242	}
243
244	static struct lval_funcs tlb_value_funcs =
245	{
246	tlb_value_read,
247	tlb_value_write
248	};
249
250
251	/* Return a new value with the correct type for the tlb object of
252	the current thread using architecture GDBARCH. Return a void value
253	if there's no object available. */
254
255	static struct value *
256	tlb_make_value (struct gdbarch gdbarch, struct internalvar var)
257	{
258	if (target_has_stack && !ptid_equal (inferior_ptid, null_ptid))
259	{
260	struct type *type = windows_get_tlb_type (gdbarch);
261	return allocate_computed_value (type, &tlb_value_funcs, NULL);
262	}
263
264	return allocate_value (builtin_type (gdbarch)->builtin_void);
265	}
266
267
268	/* Display thread information block of a given thread. */
269
270	static int
271	display_one_tib (ptid_t ptid)
272	{
273	gdb_byte *tib = NULL;
274	gdb_byte *index;
275	CORE_ADDR thread_local_base;
276	ULONGEST i, val, max, max_name, size, tib_size;
277	ULONGEST sizeof_ptr = gdbarch_ptr_bit (target_gdbarch);
278	enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
279
280	if (sizeof_ptr == 64)
281	{
282	size = sizeof (uint64_t);
283	tib_size = sizeof (thread_information_64);
284	max = MAX_TIB64;
285	}
286	else
287	{
288	size = sizeof (uint32_t);
289	tib_size = sizeof (thread_information_32);
290	max = MAX_TIB32;
291	}
292
293	max_name = max;
294
295	if (maint_display_all_tib)
296	{
297	tib_size = FULL_TIB_SIZE;
298	max = tib_size / size;
299	}
300
301	tib = alloca (tib_size);
302
303	if (target_get_tib_address (ptid, &thread_local_base) == 0)
304	{
305	printf_filtered (_("Unable to get thread local base for %s\n"),
306	target_pid_to_str (ptid));
307	return -1;
308	}
309
310	if (target_read (&current_target, TARGET_OBJECT_MEMORY,
311	NULL, tib, thread_local_base, tib_size) != tib_size)
312	{
313	printf_filtered (_("Unable to read thread information block for %s at \
314	address %s\n"),
315	target_pid_to_str (ptid),
316	paddress (target_gdbarch, thread_local_base));
317	return -1;
318	}
319
320	printf_filtered (_("Thread Information Block %s at %s\n"),
321	target_pid_to_str (ptid),
322	paddress (target_gdbarch, thread_local_base));
323
324	index = (gdb_byte *) tib;
325
326	/* All fields have the size of a pointer, this allows to iterate
327	using the same for loop for both layouts. */
328	for (i = 0; i < max; i++)
329	{
330	val = extract_unsigned_integer (index, size, byte_order);
331	if (i < max_name)
332	printf_filtered (_("%s is 0x%s\n"), TIB_NAME[i], phex (val, size));
333	else if (val != 0)
334	printf_filtered (_("TIB[0x%s] is 0x%s\n"), phex (i * size, 2),
335	phex (val, size));
336	index += size;
337	}
338	return 1;
339	}
340
341	/* Display thread information block of a thread specified by ARGS.
342	If ARGS is empty, display thread information block of current_thread
343	if current_thread is non NULL.
344	Otherwise ARGS is parsed and converted to a integer that should
345	be the windows ThreadID (not the internal GDB thread ID). */
346
347	static void
348	display_tib (char * args, int from_tty)
349	{
350	if (args)
351	{
352	struct thread_info *tp;
353	int gdb_id = value_as_long (parse_and_eval (args));
354
355	tp = find_thread_id (gdb_id);
356
357	if (!tp)
358	error (_("Thread ID %d not known."), gdb_id);
359
360	if (!target_thread_alive (tp->ptid))
361	error (_("Thread ID %d has terminated."), gdb_id);
362
363	display_one_tib (tp->ptid);
364	}
365	else if (!ptid_equal (inferior_ptid, null_ptid))
366	display_one_tib (inferior_ptid);
367	}
bfb87e33 JB	368
bfb87e33 JB	369	void
dc05df57	370	windows_xfer_shared_library (const char* so_name, CORE_ADDR load_addr,
5af949e3	371	struct gdbarch gdbarch, struct obstack obstack)
bfb87e33 JB	372	{
	373	char *p;
	374	obstack_grow_str (obstack, "<library name=\"");
	375	p = xml_escape_text (so_name);
	376	obstack_grow_str (obstack, p);
	377	xfree (p);
5af949e3	378	obstack_grow_str (obstack, "\"><segment address=\"");
bfb87e33 JB	379	/* The symbols in a dll are offset by 0x1000, which is the the
	380	offset from 0 of the first byte in an image - because of the file
	381	header and the section alignment. */
5af949e3	382	obstack_grow_str (obstack, paddress (gdbarch, load_addr + 0x1000));
bfb87e33 JB	383	obstack_grow_str (obstack, "\"/></library>");
bfb87e33 JB	384	}
711e434b PM	385
	386	static void
	387	show_maint_show_all_tib (struct ui_file *file, int from_tty,
	388	struct cmd_list_element c, const char value)
	389	{
	390	fprintf_filtered (file, _("Show all non-zero elements of Thread Information \
	391	Block is %s.\n"), value);
	392	}
	393
	394	static void
	395	info_w32_command (char *args, int from_tty)
	396	{
	397	help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
	398	}
	399
	400	static int w32_prefix_command_valid = 0;
	401	void
	402	init_w32_command_list (void)
	403	{
	404	if (!w32_prefix_command_valid)
	405	{
	406	add_prefix_cmd ("w32", class_info, info_w32_command,
	407	_("Print information specific to Win32 debugging."),
	408	&info_w32_cmdlist, "info w32 ", 0, &infolist);
	409	w32_prefix_command_valid = 1;
	410	}
	411	}
	412
	413	void
	414	_initialize_windows_tdep (void)
	415	{
	416	init_w32_command_list ();
	417	add_cmd ("thread-information-block", class_info, display_tib,
	418	_("Display thread information block."),
	419	&info_w32_cmdlist);
	420	add_alias_cmd ("tib", "thread-information-block", class_info, 1,
	421	&info_w32_cmdlist);
	422
	423	add_setshow_boolean_cmd ("show-all-tib", class_maintenance,
	424	&maint_display_all_tib, _("\
	425	Set whether to display all non-zero fields of thread information block."), _("\
	426	Show whether to display all non-zero fields of thread information block."), _("\
	427	Use \"on\" to enable, \"off\" to disable.\n\
	428	If enabled, all non-zero fields of thread information block are displayed,\n\
	429	even if their meaning is unknown."),
	430	NULL,
	431	show_maint_show_all_tib,
	432	&maintenance_set_cmdlist,
	433	&maintenance_show_cmdlist);
	434
	435	/* Explicitly create without lookup, since that tries to create a
	436	value with a void typed value, and when we get here, gdbarch
	437	isn't initialized yet. At this point, we're quite sure there
	438	isn't another convenience variable of the same name. */
	439	create_internalvar_type_lazy ("_tlb", tlb_make_value);
	440	}