-/* Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2008-2013 Free Software Foundation, Inc.
This file is part of GDB.
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"
+#include "objfiles.h"
+#include "symfile.h"
+#include "coff-pe-read.h"
+#include "gdb_bfd.h"
+#include "complaints.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, void *ignore)
+{
+ 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 (¤t_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;
+ struct bfd * dll;
+ CORE_ADDR text_offset;
+
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
- 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);
+ obstack_grow_str (obstack, "\"><segment address=\"");
+ dll = gdb_bfd_open_maybe_remote (so_name);
+ /* The following calls are OK even if dll is NULL.
+ The default value 0x1000 is returned by pe_text_section_offset
+ in that case. */
+ text_offset = pe_text_section_offset (dll);
+ gdb_bfd_unref (dll);
+ obstack_grow_str (obstack, paddress (gdbarch, load_addr + text_offset));
obstack_grow_str (obstack, "\"/></library>");
}
+/* Implement the "iterate_over_objfiles_in_search_order" gdbarch
+ method. It searches all objfiles, starting with CURRENT_OBJFILE
+ first (if not NULL).
+
+ On Windows, the system behaves a little differently when two
+ objfiles each define a global symbol using the same name, compared
+ to other platforms such as GNU/Linux for instance. On GNU/Linux,
+ all instances of the symbol effectively get merged into a single
+ one, but on Windows, they remain distinct.
+
+ As a result, it usually makes sense to start global symbol searches
+ with the current objfile before expanding it to all other objfiles.
+ This helps for instance when a user debugs some code in a DLL that
+ refers to a global variable defined inside that DLL. When trying
+ to print the value of that global variable, it would be unhelpful
+ to print the value of another global variable defined with the same
+ name, but in a different DLL. */
+
+void
+windows_iterate_over_objfiles_in_search_order
+ (struct gdbarch *gdbarch,
+ iterate_over_objfiles_in_search_order_cb_ftype *cb,
+ void *cb_data, struct objfile *current_objfile)
+{
+ int stop;
+ struct objfile *objfile;
+
+ if (current_objfile)
+ {
+ stop = cb (current_objfile, cb_data);
+ if (stop)
+ return;
+ }
+
+ ALL_OBJFILES (objfile)
+ {
+ if (objfile != current_objfile)
+ {
+ stop = cb (objfile, cb_data);
+ if (stop)
+ return;
+ }
+ }
+}
+
+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;
+ }
+}
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_windows_tdep;
+
+/* Implementation of `tlb' variable. */
+
+static const struct internalvar_funcs tlb_funcs =
+{
+ tlb_make_value,
+ NULL,
+ NULL
+};
+
+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_funcs, NULL);
+}
projects / thirdparty / binutils-gdb.git / blobdiff