X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fwindows-tdep.c;h=e111d4185bb54807ee2e383cb2068eeafb8a9d6a;hb=9f3a5c850eddd9e804c20a9c664e90b9e3d14140;hp=1a4bae8cbf060c13360601f32095c12207ba534e;hpb=bfb87e33ab2006cc3ab23d18fd921425223337c5;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/windows-tdep.c b/gdb/windows-tdep.c
index 1a4bae8cbf..e111d4185b 100644
--- a/gdb/windows-tdep.c
+++ b/gdb/windows-tdep.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2008-2012 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -16,26 +16,440 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
-#include "win32-tdep.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)
+{
+  static struct gdbarch *last_gdbarch = NULL;
+  static struct type *last_tlb_type = NULL;
+  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;
+
+  /* Do not rebuild type if same gdbarch as last time.  */
+  if (last_tlb_type && last_gdbarch == gdbarch)
+    return last_tlb_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",
+			       builtin_type (gdbarch)->builtin_func_ptr);
+
+  /* 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;
+
+  last_tlb_type = tib_ptr_type;
+  last_gdbarch = gdbarch;
+
+  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 const 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
-win32_xfer_shared_library (const char* so_name, CORE_ADDR load_addr,
-			   struct obstack *obstack)
+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=\"0x");
-  /* The symbols in a dll are offset by 0x1000, which is the the
+  obstack_grow_str (obstack, "\"><segment address=\"");
+  /* The symbols in a dll are offset by 0x1000, which is the
      offset from 0 of the first byte in an image - because of the file
-     header and the section alignment. */
-  p = paddr_nz (load_addr + 0x1000);
-  obstack_grow_str (obstack, p);
+     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);
+}