456 lines
16 KiB
C
456 lines
16 KiB
C
/* Copyright (C) 2008-2012 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "windows-tdep.h"
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#include "gdb_obstack.h"
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#include "xml-support.h"
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#include "gdbarch.h"
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#include "target.h"
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#include "value.h"
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#include "inferior.h"
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#include "command.h"
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#include "gdbcmd.h"
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#include "gdbthread.h"
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struct cmd_list_element *info_w32_cmdlist;
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typedef struct thread_information_block_32
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{
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uint32_t current_seh; /* %fs:0x0000 */
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uint32_t current_top_of_stack; /* %fs:0x0004 */
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uint32_t current_bottom_of_stack; /* %fs:0x0008 */
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uint32_t sub_system_tib; /* %fs:0x000c */
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uint32_t fiber_data; /* %fs:0x0010 */
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uint32_t arbitrary_data_slot; /* %fs:0x0014 */
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uint32_t linear_address_tib; /* %fs:0x0018 */
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uint32_t environment_pointer; /* %fs:0x001c */
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uint32_t process_id; /* %fs:0x0020 */
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uint32_t current_thread_id; /* %fs:0x0024 */
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uint32_t active_rpc_handle; /* %fs:0x0028 */
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uint32_t thread_local_storage; /* %fs:0x002c */
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uint32_t process_environment_block; /* %fs:0x0030 */
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uint32_t last_error_number; /* %fs:0x0034 */
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}
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thread_information_32;
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typedef struct thread_information_block_64
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{
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uint64_t current_seh; /* %gs:0x0000 */
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uint64_t current_top_of_stack; /* %gs:0x0008 */
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uint64_t current_bottom_of_stack; /* %gs:0x0010 */
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uint64_t sub_system_tib; /* %gs:0x0018 */
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uint64_t fiber_data; /* %gs:0x0020 */
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uint64_t arbitrary_data_slot; /* %gs:0x0028 */
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uint64_t linear_address_tib; /* %gs:0x0030 */
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uint64_t environment_pointer; /* %gs:0x0038 */
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uint64_t process_id; /* %gs:0x0040 */
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uint64_t current_thread_id; /* %gs:0x0048 */
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uint64_t active_rpc_handle; /* %gs:0x0050 */
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uint64_t thread_local_storage; /* %gs:0x0058 */
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uint64_t process_environment_block; /* %gs:0x0060 */
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uint64_t last_error_number; /* %gs:0x0068 */
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}
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thread_information_64;
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static const char* TIB_NAME[] =
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{
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" current_seh ", /* %fs:0x0000 */
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" current_top_of_stack ", /* %fs:0x0004 */
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" current_bottom_of_stack ", /* %fs:0x0008 */
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" sub_system_tib ", /* %fs:0x000c */
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" fiber_data ", /* %fs:0x0010 */
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" arbitrary_data_slot ", /* %fs:0x0014 */
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" linear_address_tib ", /* %fs:0x0018 */
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" environment_pointer ", /* %fs:0x001c */
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" process_id ", /* %fs:0x0020 */
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" current_thread_id ", /* %fs:0x0024 */
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" active_rpc_handle ", /* %fs:0x0028 */
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" thread_local_storage ", /* %fs:0x002c */
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" process_environment_block ", /* %fs:0x0030 */
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" last_error_number " /* %fs:0x0034 */
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};
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static const int MAX_TIB32 =
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sizeof (thread_information_32) / sizeof (uint32_t);
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static const int MAX_TIB64 =
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sizeof (thread_information_64) / sizeof (uint64_t);
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static const int FULL_TIB_SIZE = 0x1000;
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static int maint_display_all_tib = 0;
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/* Define Thread Local Base pointer type. */
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static struct type *
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windows_get_tlb_type (struct gdbarch *gdbarch)
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{
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static struct gdbarch *last_gdbarch = NULL;
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static struct type *last_tlb_type = NULL;
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struct type *dword_ptr_type, *dword32_type, *void_ptr_type;
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struct type *peb_ldr_type, *peb_ldr_ptr_type;
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struct type *peb_type, *peb_ptr_type, *list_type, *list_ptr_type;
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struct type *module_list_ptr_type;
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struct type *tib_type, *seh_type, *tib_ptr_type, *seh_ptr_type;
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/* Do not rebuild type if same gdbarch as last time. */
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if (last_tlb_type && last_gdbarch == gdbarch)
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return last_tlb_type;
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dword_ptr_type = arch_integer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
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1, "DWORD_PTR");
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dword32_type = arch_integer_type (gdbarch, 32,
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1, "DWORD32");
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void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
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/* list entry */
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list_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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TYPE_NAME (list_type) = xstrdup ("list");
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list_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
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TYPE_LENGTH (void_ptr_type), NULL);
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module_list_ptr_type = void_ptr_type;
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append_composite_type_field (list_type, "forward_list",
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module_list_ptr_type);
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append_composite_type_field (list_type, "backward_list",
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module_list_ptr_type);
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/* Structured Exception Handler */
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seh_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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TYPE_NAME (seh_type) = xstrdup ("seh");
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seh_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
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TYPE_LENGTH (void_ptr_type), NULL);
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TYPE_TARGET_TYPE (seh_ptr_type) = seh_type;
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append_composite_type_field (seh_type, "next_seh", seh_ptr_type);
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append_composite_type_field (seh_type, "handler",
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builtin_type (gdbarch)->builtin_func_ptr);
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/* struct _PEB_LDR_DATA */
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peb_ldr_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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TYPE_NAME (peb_ldr_type) = xstrdup ("peb_ldr_data");
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append_composite_type_field (peb_ldr_type, "length", dword32_type);
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append_composite_type_field (peb_ldr_type, "initialized", dword32_type);
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append_composite_type_field (peb_ldr_type, "ss_handle", void_ptr_type);
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append_composite_type_field (peb_ldr_type, "in_load_order", list_type);
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append_composite_type_field (peb_ldr_type, "in_memory_order", list_type);
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append_composite_type_field (peb_ldr_type, "in_init_order", list_type);
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append_composite_type_field (peb_ldr_type, "entry_in_progress",
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void_ptr_type);
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peb_ldr_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
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TYPE_LENGTH (void_ptr_type), NULL);
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TYPE_TARGET_TYPE (peb_ldr_ptr_type) = peb_ldr_type;
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/* struct process environment block */
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peb_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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TYPE_NAME (peb_type) = xstrdup ("peb");
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/* First bytes contain several flags. */
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append_composite_type_field (peb_type, "flags", dword_ptr_type);
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append_composite_type_field (peb_type, "mutant", void_ptr_type);
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append_composite_type_field (peb_type, "image_base_address", void_ptr_type);
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append_composite_type_field (peb_type, "ldr", peb_ldr_ptr_type);
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append_composite_type_field (peb_type, "process_parameters", void_ptr_type);
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append_composite_type_field (peb_type, "sub_system_data", void_ptr_type);
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append_composite_type_field (peb_type, "process_heap", void_ptr_type);
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append_composite_type_field (peb_type, "fast_peb_lock", void_ptr_type);
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peb_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
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TYPE_LENGTH (void_ptr_type), NULL);
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TYPE_TARGET_TYPE (peb_ptr_type) = peb_type;
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/* struct thread information block */
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tib_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
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TYPE_NAME (tib_type) = xstrdup ("tib");
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/* uint32_t current_seh; %fs:0x0000 */
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append_composite_type_field (tib_type, "current_seh", seh_ptr_type);
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/* uint32_t current_top_of_stack; %fs:0x0004 */
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append_composite_type_field (tib_type, "current_top_of_stack",
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void_ptr_type);
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/* uint32_t current_bottom_of_stack; %fs:0x0008 */
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append_composite_type_field (tib_type, "current_bottom_of_stack",
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void_ptr_type);
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/* uint32_t sub_system_tib; %fs:0x000c */
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append_composite_type_field (tib_type, "sub_system_tib", void_ptr_type);
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/* uint32_t fiber_data; %fs:0x0010 */
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append_composite_type_field (tib_type, "fiber_data", void_ptr_type);
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/* uint32_t arbitrary_data_slot; %fs:0x0014 */
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append_composite_type_field (tib_type, "arbitrary_data_slot", void_ptr_type);
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/* uint32_t linear_address_tib; %fs:0x0018 */
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append_composite_type_field (tib_type, "linear_address_tib", void_ptr_type);
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/* uint32_t environment_pointer; %fs:0x001c */
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append_composite_type_field (tib_type, "environment_pointer", void_ptr_type);
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/* uint32_t process_id; %fs:0x0020 */
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append_composite_type_field (tib_type, "process_id", dword_ptr_type);
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/* uint32_t current_thread_id; %fs:0x0024 */
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append_composite_type_field (tib_type, "thread_id", dword_ptr_type);
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/* uint32_t active_rpc_handle; %fs:0x0028 */
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append_composite_type_field (tib_type, "active_rpc_handle", dword_ptr_type);
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/* uint32_t thread_local_storage; %fs:0x002c */
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append_composite_type_field (tib_type, "thread_local_storage",
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void_ptr_type);
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/* uint32_t process_environment_block; %fs:0x0030 */
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append_composite_type_field (tib_type, "process_environment_block",
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peb_ptr_type);
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/* uint32_t last_error_number; %fs:0x0034 */
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append_composite_type_field (tib_type, "last_error_number", dword_ptr_type);
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tib_ptr_type = arch_type (gdbarch, TYPE_CODE_PTR,
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TYPE_LENGTH (void_ptr_type), NULL);
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TYPE_TARGET_TYPE (tib_ptr_type) = tib_type;
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last_tlb_type = tib_ptr_type;
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last_gdbarch = gdbarch;
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return tib_ptr_type;
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}
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/* The $_tlb convenience variable is a bit special. We don't know
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for sure the type of the value until we actually have a chance to
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fetch the data. The type can change depending on gdbarch, so it is
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also dependent on which thread you have selected. */
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/* This function implements the lval_computed support for reading a
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$_tlb value. */
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static void
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tlb_value_read (struct value *val)
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{
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CORE_ADDR tlb;
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struct type *type = check_typedef (value_type (val));
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if (!target_get_tib_address (inferior_ptid, &tlb))
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error (_("Unable to read tlb"));
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store_typed_address (value_contents_raw (val), type, tlb);
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}
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/* This function implements the lval_computed support for writing a
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$_tlb value. */
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static void
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tlb_value_write (struct value *v, struct value *fromval)
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{
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error (_("Impossible to change the Thread Local Base"));
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}
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static const struct lval_funcs tlb_value_funcs =
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{
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tlb_value_read,
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tlb_value_write
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};
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/* Return a new value with the correct type for the tlb object of
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the current thread using architecture GDBARCH. Return a void value
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if there's no object available. */
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static struct value *
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tlb_make_value (struct gdbarch *gdbarch, struct internalvar *var)
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{
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if (target_has_stack && !ptid_equal (inferior_ptid, null_ptid))
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{
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struct type *type = windows_get_tlb_type (gdbarch);
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return allocate_computed_value (type, &tlb_value_funcs, NULL);
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}
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return allocate_value (builtin_type (gdbarch)->builtin_void);
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}
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/* Display thread information block of a given thread. */
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static int
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display_one_tib (ptid_t ptid)
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{
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gdb_byte *tib = NULL;
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gdb_byte *index;
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CORE_ADDR thread_local_base;
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ULONGEST i, val, max, max_name, size, tib_size;
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ULONGEST sizeof_ptr = gdbarch_ptr_bit (target_gdbarch);
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enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
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if (sizeof_ptr == 64)
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{
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size = sizeof (uint64_t);
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tib_size = sizeof (thread_information_64);
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max = MAX_TIB64;
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}
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else
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{
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size = sizeof (uint32_t);
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tib_size = sizeof (thread_information_32);
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max = MAX_TIB32;
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}
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max_name = max;
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if (maint_display_all_tib)
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{
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tib_size = FULL_TIB_SIZE;
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max = tib_size / size;
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}
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tib = alloca (tib_size);
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if (target_get_tib_address (ptid, &thread_local_base) == 0)
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{
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printf_filtered (_("Unable to get thread local base for %s\n"),
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target_pid_to_str (ptid));
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return -1;
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}
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if (target_read (¤t_target, TARGET_OBJECT_MEMORY,
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NULL, tib, thread_local_base, tib_size) != tib_size)
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{
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printf_filtered (_("Unable to read thread information "
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"block for %s at address %s\n"),
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target_pid_to_str (ptid),
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paddress (target_gdbarch, thread_local_base));
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return -1;
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}
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printf_filtered (_("Thread Information Block %s at %s\n"),
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target_pid_to_str (ptid),
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paddress (target_gdbarch, thread_local_base));
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index = (gdb_byte *) tib;
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/* All fields have the size of a pointer, this allows to iterate
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using the same for loop for both layouts. */
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for (i = 0; i < max; i++)
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{
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val = extract_unsigned_integer (index, size, byte_order);
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if (i < max_name)
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printf_filtered (_("%s is 0x%s\n"), TIB_NAME[i], phex (val, size));
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else if (val != 0)
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printf_filtered (_("TIB[0x%s] is 0x%s\n"), phex (i * size, 2),
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phex (val, size));
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index += size;
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}
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return 1;
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}
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/* Display thread information block of a thread specified by ARGS.
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If ARGS is empty, display thread information block of current_thread
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if current_thread is non NULL.
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Otherwise ARGS is parsed and converted to a integer that should
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be the windows ThreadID (not the internal GDB thread ID). */
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static void
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display_tib (char * args, int from_tty)
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{
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if (args)
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{
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struct thread_info *tp;
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int gdb_id = value_as_long (parse_and_eval (args));
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tp = find_thread_id (gdb_id);
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if (!tp)
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error (_("Thread ID %d not known."), gdb_id);
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if (!target_thread_alive (tp->ptid))
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error (_("Thread ID %d has terminated."), gdb_id);
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display_one_tib (tp->ptid);
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}
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else if (!ptid_equal (inferior_ptid, null_ptid))
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display_one_tib (inferior_ptid);
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}
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void
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windows_xfer_shared_library (const char* so_name, CORE_ADDR load_addr,
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struct gdbarch *gdbarch, struct obstack *obstack)
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{
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char *p;
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obstack_grow_str (obstack, "<library name=\"");
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p = xml_escape_text (so_name);
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obstack_grow_str (obstack, p);
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xfree (p);
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obstack_grow_str (obstack, "\"><segment address=\"");
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/* The symbols in a dll are offset by 0x1000, which is the
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offset from 0 of the first byte in an image - because of the file
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header and the section alignment. */
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obstack_grow_str (obstack, paddress (gdbarch, load_addr + 0x1000));
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obstack_grow_str (obstack, "\"/></library>");
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}
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static void
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show_maint_show_all_tib (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("Show all non-zero elements of "
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"Thread Information Block is %s.\n"), value);
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}
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static void
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info_w32_command (char *args, int from_tty)
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{
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help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
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}
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static int w32_prefix_command_valid = 0;
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void
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init_w32_command_list (void)
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{
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if (!w32_prefix_command_valid)
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{
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add_prefix_cmd ("w32", class_info, info_w32_command,
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_("Print information specific to Win32 debugging."),
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&info_w32_cmdlist, "info w32 ", 0, &infolist);
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w32_prefix_command_valid = 1;
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}
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}
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void
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_initialize_windows_tdep (void)
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{
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init_w32_command_list ();
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add_cmd ("thread-information-block", class_info, display_tib,
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_("Display thread information block."),
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&info_w32_cmdlist);
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add_alias_cmd ("tib", "thread-information-block", class_info, 1,
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&info_w32_cmdlist);
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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);
|
|
}
|