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@ -19,6 +19,352 @@ |
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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 = sizeof (thread_information_32) / sizeof (uint32_t); |
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static const int MAX_TIB64 = 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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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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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", 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", void_ptr_type); |
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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", 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", 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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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 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 block for %s at \
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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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@ -36,3 +382,59 @@ windows_xfer_shared_library (const char* so_name, CORE_ADDR load_addr, |
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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 Thread Information \
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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, |
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&maint_display_all_tib, _("\
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|
Set whether to display all non-zero fields of thread information block."), _("\ |
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|
Show whether to display all non-zero fields of thread information block."), _("\ |
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Use \"on\" to enable, \"off\" to disable.\n\
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If enabled, all non-zero fields of thread information block are displayed,\n\ |
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|
even if their meaning is unknown."), |
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|
NULL, |
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show_maint_show_all_tib, |
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&maintenance_set_cmdlist, |
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|
&maintenance_show_cmdlist); |
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/* Explicitly create without lookup, since that tries to create a
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value with a void typed value, and when we get here, gdbarch |
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|
isn't initialized yet. At this point, we're quite sure there |
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|
isn't another convenience variable of the same name. */ |
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|
create_internalvar_type_lazy ("_tlb", tlb_make_value); |
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} |
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Pierre Muller
17 years ago