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This is gdbint.info, produced by makeinfo version 4.0 from
./gdbint.texinfo.
INFO-DIR-SECTION Programming & development tools.
START-INFO-DIR-ENTRY
START-INFO-DIR-ENTRY
* Gdb-Internals: (gdbint). The GNU debugger's internals.
END-INFO-DIR-ENTRY
END-INFO-DIR-ENTRY
This file documents the internals of the GNU debugger GDB.
Copyright 1990,1991,1992,1993,1994,1996,1998,1999,2000,2001 Free
Software Foundation, Inc. Contributed by Cygnus Solutions. Written by
John Gilmore. Second Edition by Stan Shebs.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1 or
any later version published by the Free Software Foundation; with the
Invariant Sections being "Algorithms" and "Porting GDB", with the
Front-Cover texts being "A GNU Manual," and with the Back-Cover Texts
as in (a) below.
(a) The FSF's Back-Cover Text is: "You have freedom to copy and
modify this GNU Manual, like GNU software. Copies published by the Free
Software Foundation raise funds for GNU development."
File: gdbint.info, Node: Debugging GDB, Up: Hints
Debugging GDB with itself
=========================
If GDB is limping on your machine, this is the preferred way to get
it fully functional. Be warned that in some ancient Unix systems, like
Ultrix 4.2, a program can't be running in one process while it is being
debugged in another. Rather than typing the command `./gdb ./gdb',
which works on Suns and such, you can copy `gdb' to `gdb2' and then
type `./gdb ./gdb2'.
When you run GDB in the GDB source directory, it will read a
`.gdbinit' file that sets up some simple things to make debugging gdb
easier. The `info' command, when executed without a subcommand in a
GDB being debugged by gdb, will pop you back up to the top level gdb.
See `.gdbinit' for details.
If you use emacs, you will probably want to do a `make TAGS' after
you configure your distribution; this will put the machine dependent
routines for your local machine where they will be accessed first by
`M-.'
Also, make sure that you've either compiled GDB with your local cc,
or have run `fixincludes' if you are compiling with gcc.
Submitting Patches
==================
Thanks for thinking of offering your changes back to the community of
GDB users. In general we like to get well designed enhancements.
Thanks also for checking in advance about the best way to transfer the
changes.
The GDB maintainers will only install "cleanly designed" patches.
This manual summarizes what we believe to be clean design for GDB.
If the maintainers don't have time to put the patch in when it
arrives, or if there is any question about a patch, it goes into a
large queue with everyone else's patches and bug reports.
The legal issue is that to incorporate substantial changes requires a
copyright assignment from you and/or your employer, granting ownership
of the changes to the Free Software Foundation. You can get the
standard documents for doing this by sending mail to `gnu@gnu.org' and
asking for it. We recommend that people write in "All programs owned
by the Free Software Foundation" as "NAME OF PROGRAM", so that changes
in many programs (not just GDB, but GAS, Emacs, GCC, etc) can be
contributed with only one piece of legalese pushed through the
bureacracy and filed with the FSF. We can't start merging changes until
this paperwork is received by the FSF (their rules, which we follow
since we maintain it for them).
Technically, the easiest way to receive changes is to receive each
feature as a small context diff or unidiff, suitable for `patch'. Each
message sent to me should include the changes to C code and header
files for a single feature, plus `ChangeLog' entries for each directory
where files were modified, and diffs for any changes needed to the
manuals (`gdb/doc/gdb.texinfo' or `gdb/doc/gdbint.texinfo'). If there
are a lot of changes for a single feature, they can be split down into
multiple messages.
In this way, if we read and like the feature, we can add it to the
sources with a single patch command, do some testing, and check it in.
If you leave out the `ChangeLog', we have to write one. If you leave
out the doc, we have to puzzle out what needs documenting. Etc., etc.
The reason to send each change in a separate message is that we will
not install some of the changes. They'll be returned to you with
questions or comments. If we're doing our job correctly, the message
back to you will say what you have to fix in order to make the change
acceptable. The reason to have separate messages for separate features
is so that the acceptable changes can be installed while one or more
changes are being reworked. If multiple features are sent in a single
message, we tend to not put in the effort to sort out the acceptable
changes from the unacceptable, so none of the features get installed
until all are acceptable.
If this sounds painful or authoritarian, well, it is. But we get a
lot of bug reports and a lot of patches, and many of them don't get
installed because we don't have the time to finish the job that the bug
reporter or the contributor could have done. Patches that arrive
complete, working, and well designed, tend to get installed on the day
they arrive. The others go into a queue and get installed as time
permits, which, since the maintainers have many demands to meet, may not
be for quite some time.
Please send patches directly to the GDB maintainers
<gdb-patches@sourceware.cygnus.com>.
Obsolete Conditionals
=====================
Fragments of old code in GDB sometimes reference or set the following
configuration macros. They should not be used by new code, and old uses
should be removed as those parts of the debugger are otherwise touched.
`STACK_END_ADDR'
This macro used to define where the end of the stack appeared, for
use in interpreting core file formats that don't record this
address in the core file itself. This information is now
configured in BFD, and GDB gets the info portably from there. The
values in GDB's configuration files should be moved into BFD
configuration files (if needed there), and deleted from all of
GDB's config files.
Any `FOO-xdep.c' file that references STACK_END_ADDR is so old
that it has never been converted to use BFD. Now that's old!
`PYRAMID_CONTROL_FRAME_DEBUGGING'
pyr-xdep.c
`PYRAMID_CORE'
pyr-xdep.c
`PYRAMID_PTRACE'
pyr-xdep.c
`REG_STACK_SEGMENT'
exec.c
File: gdbint.info, Node: Index, Prev: Hints, Up: Top
Index
*****
* Menu:
* _initialize_language: Language Support.
* a.out format: Symbol Handling.
* add_cmd: User Interface.
* add_com: User Interface.
* add_symtab_fns: Symbol Handling.
* adding a new host: Host Definition.
* adding a symbol-reading module: Symbol Handling.
* adding a target: Target Architecture Definition.
* adding debugging info reader: Symbol Handling.
* adding source language: Language Support.
* ADDITIONAL_OPTION_CASES: Target Architecture Definition.
* ADDITIONAL_OPTION_HANDLER: Target Architecture Definition.
* ADDITIONAL_OPTION_HELP: Target Architecture Definition.
* ADDITIONAL_OPTIONS: Target Architecture Definition.
* ADDR_BITS_REMOVE: Target Architecture Definition.
* address representation: Target Architecture Definition.
* address spaces, separate data and code: Target Architecture Definition.
* ADDRESS_TO_POINTER: Target Architecture Definition.
* algorithms: Algorithms.
* ALIGN_STACK_ON_STARTUP: Host Definition.
* allocate_symtab: Language Support.
* assumptions about targets: Coding.
* ATTACH_DETACH: Native Debugging.
* ATTR_NORETURN: Host Definition.
* BEFORE_MAIN_LOOP_HOOK: Target Architecture Definition.
* BELIEVE_PCC_PROMOTION: Target Architecture Definition.
* BELIEVE_PCC_PROMOTION_TYPE: Target Architecture Definition.
* BFD library: Support Libraries.
* BIG_BREAKPOINT: Target Architecture Definition.
* BIG_REMOTE_BREAKPOINT: Target Architecture Definition.
* BITS_BIG_ENDIAN: Target Architecture Definition.
* BPT_VECTOR: Target Architecture Definition.
* BREAKPOINT <1>: Target Architecture Definition.
* BREAKPOINT: Algorithms.
* BREAKPOINT_FROM_PC: Target Architecture Definition.
* breakpoints: Algorithms.
* bug-gdb mailing list: Getting Started.
* byte order: Host Definition.
* C data types: Coding.
* call stack frame: Algorithms.
* CALL_DUMMY: Target Architecture Definition.
* CALL_DUMMY_LOCATION: Target Architecture Definition.
* CALL_DUMMY_P: Target Architecture Definition.
* CALL_DUMMY_STACK_ADJUST: Target Architecture Definition.
* CALL_DUMMY_STACK_ADJUST_P: Target Architecture Definition.
* CALL_DUMMY_WORDS: Target Architecture Definition.
* call_function_by_hand: Target Architecture Definition.
* CANNOT_FETCH_REGISTER: Target Architecture Definition.
* CANNOT_STEP_HW_WATCHPOINTS: Algorithms.
* CANNOT_STORE_REGISTER: Target Architecture Definition.
* CC_HAS_LONG_LONG: Host Definition.
* CHILD_PREPARE_TO_STORE: Native Debugging.
* cleanups: Coding.
* CLEAR_DEFERRED_STORES: Target Architecture Definition.
* CLEAR_SOLIB: Native Debugging.
* CLI: User Interface.
* code pointers, word-addressed: Target Architecture Definition.
* coding standards: Coding.
* COERCE_FLOAT_TO_DOUBLE: Target Architecture Definition.
* COFF debugging info: Symbol Handling.
* COFF format: Symbol Handling.
* command implementation: Getting Started.
* command interpreter: User Interface.
* comment formatting: Coding.
* compiler warnings: Coding.
* converting between pointers and addresses: Target Architecture Definition.
* CPLUS_MARKERz: Target Architecture Definition.
* create_new_frame: Algorithms.
* CRLF_SOURCE_FILES: Host Definition.
* current_language: Language Support.
* D10V addresses: Target Architecture Definition.
* data output: User Interface.
* DBX_PARM_SYMBOL_CLASS: Target Architecture Definition.
* DEBUG_PTRACE: Native Debugging.
* debugging GDB: Debugging GDB.
* DECR_PC_AFTER_BREAK: Target Architecture Definition.
* DECR_PC_AFTER_HW_BREAK <1>: Target Architecture Definition.
* DECR_PC_AFTER_HW_BREAK: Algorithms.
* DEFAULT_PROMPT: Host Definition.
* deprecate_cmd: User Interface.
* deprecating commands: User Interface.
* design: Coding.
* DEV_TTY: Host Definition.
* DIRNAME_SEPARATOR: Coding.
* DISABLE_UNSETTABLE_BREAK: Target Architecture Definition.
* discard_cleanups: Coding.
* do_cleanups: Coding.
* DO_DEFERRED_STORES: Target Architecture Definition.
* DO_REGISTERS_INFO: Target Architecture Definition.
* DOS text files: Host Definition.
* DWARF 1 debugging info: Symbol Handling.
* DWARF 2 debugging info: Symbol Handling.
* DWARF2_REG_TO_REGNUM: Target Architecture Definition.
* DWARF_REG_TO_REGNUM: Target Architecture Definition.
* ECOFF debugging info: Symbol Handling.
* ECOFF format: Symbol Handling.
* ECOFF_REG_TO_REGNUM: Target Architecture Definition.
* ELF format: Symbol Handling.
* END_OF_TEXT_DEFAULT: Target Architecture Definition.
* evaluate_subexp: Language Support.
* expression evaluation routines: Language Support.
* expression parser: Language Support.
* extract_address: Target Architecture Definition.
* EXTRACT_RETURN_VALUE: Target Architecture Definition.
* EXTRACT_STRUCT_VALUE_ADDRESS: Target Architecture Definition.
* EXTRACT_STRUCT_VALUE_ADDRESS_P: Target Architecture Definition.
* extract_typed_address: Target Architecture Definition.
* FCLOSE_PROVIDED: Host Definition.
* fetch_core_registers: Native Debugging.
* FETCH_INFERIOR_REGISTERS: Native Debugging.
* field output functions: User Interface.
* file names, portability: Coding.
* FILENAME_CMP: Coding.
* FILES_INFO_HOOK: Native Debugging.
* find_pc_function: Symbol Handling.
* find_pc_line: Symbol Handling.
* find_sym_fns: Symbol Handling.
* finding a symbol: Symbol Handling.
* FLOAT_INFO: Target Architecture Definition.
* FOPEN_RB: Host Definition.
* FP0_REGNUM: Native Debugging.
* FP_REGNUM: Target Architecture Definition.
* frame: Algorithms.
* frame chain: Algorithms.
* frame pointer register: Algorithms.
* FRAME_ARGS_ADDRESS_CORRECT: Target Architecture Definition.
* FRAME_CHAIN: Target Architecture Definition.
* FRAME_CHAIN_COMBINE: Target Architecture Definition.
* FRAME_CHAIN_VALID: Target Architecture Definition.
* FRAME_FP: Algorithms.
* FRAME_INIT_SAVED_REGS: Target Architecture Definition.
* FRAME_NUM_ARGS: Target Architecture Definition.
* FRAME_SAVED_PC: Target Architecture Definition.
* FRAMELESS_FUNCTION_INVOCATION: Target Architecture Definition.
* full symbol table: Symbol Handling.
* function prototypes: Coding.
* function usage: Coding.
* FUNCTION_EPILOGUE_SIZE: Target Architecture Definition.
* FUNCTION_START_OFFSET: Target Architecture Definition.
* fundamental types: Symbol Handling.
* GCC2_COMPILED_FLAG_SYMBOL: Target Architecture Definition.
* GCC_COMPILED_FLAG_SYMBOL: Target Architecture Definition.
* GDB_MULTI_ARCH: Target Architecture Definition.
* GDB_TARGET_IS_HPPA: Target Architecture Definition.
* GDBINIT_FILENAME: Host Definition.
* generic dummy frames: Host Definition.
* generic host support: Host Definition.
* GET_LONGJMP_TARGET <1>: Native Debugging.
* GET_LONGJMP_TARGET <2>: Target Architecture Definition.
* GET_LONGJMP_TARGET: Algorithms.
* get_saved_register: Target Architecture Definition.
* GET_SAVED_REGISTER: Target Architecture Definition.
* GETENV_PROVIDED: Host Definition.
* hardware breakpoints: Algorithms.
* hardware watchpoints: Algorithms.
* HAVE_CONTINUABLE_WATCHPOINT: Algorithms.
* HAVE_DOS_BASED_FILE_SYSTEM: Coding.
* HAVE_LONG_DOUBLE: Host Definition.
* HAVE_MMAP: Host Definition.
* HAVE_NONSTEPPABLE_WATCHPOINT: Algorithms.
* HAVE_REGISTER_WINDOWS: Target Architecture Definition.
* HAVE_SIGSETMASK: Host Definition.
* HAVE_STEPPABLE_WATCHPOINT: Algorithms.
* HAVE_TERMIO: Host Definition.
* host: Overall Structure.
* host, adding: Host Definition.
* HOST_BYTE_ORDER: Host Definition.
* i386_cleanup_dregs: Algorithms.
* I386_DR_LOW_GET_STATUS: Algorithms.
* I386_DR_LOW_RESET_ADDR: Algorithms.
* I386_DR_LOW_SET_ADDR: Algorithms.
* I386_DR_LOW_SET_CONTROL: Algorithms.
* i386_insert_hw_breakpoint: Algorithms.
* i386_insert_watchpoint: Algorithms.
* i386_region_ok_for_watchpoint: Algorithms.
* i386_remove_hw_breakpoint: Algorithms.
* i386_remove_watchpoint: Algorithms.
* i386_stopped_by_hwbp: Algorithms.
* i386_stopped_data_address: Algorithms.
* I386_USE_GENERIC_WATCHPOINTS: Algorithms.
* IBM6000_TARGET: Target Architecture Definition.
* IEEE_FLOAT: Target Architecture Definition.
* IN_SIGTRAMP: Target Architecture Definition.
* IN_SOLIB_CALL_TRAMPOLINE: Target Architecture Definition.
* IN_SOLIB_DYNSYM_RESOLVE_CODE: Target Architecture Definition.
* IN_SOLIB_RETURN_TRAMPOLINE: Target Architecture Definition.
* INIT_EXTRA_FRAME_INFO: Target Architecture Definition.
* INIT_FRAME_PC: Target Architecture Definition.
* INNER_THAN: Target Architecture Definition.
* insert or remove hardware breakpoint: Algorithms.
* INT_MAX: Host Definition.
* INT_MIN: Host Definition.
* IS_ABSOLUTE_PATH: Coding.
* IS_DIR_SEPARATOR: Coding.
* IS_TRAPPED_INTERNALVAR: Target Architecture Definition.
* ISATTY: Host Definition.
* item output functions: User Interface.
* KERNEL_U_ADDR: Native Debugging.
* KERNEL_U_ADDR_BSD: Native Debugging.
* KERNEL_U_ADDR_HPUX: Native Debugging.
* L_SET: Host Definition.
* language parser: Language Support.
* language support: Language Support.
* legal papers for code contributions: Debugging GDB.
* length_of_subexp: Language Support.
* libgdb: User Interface.
* line wrap in output: Coding.
* lint: Host Definition.
* list output functions: User Interface.
* LITTLE_BREAKPOINT: Target Architecture Definition.
* LITTLE_REMOTE_BREAKPOINT: Target Architecture Definition.
* long long data type: Host Definition.
* LONG_MAX: Host Definition.
* LONGEST: Host Definition.
* longjmp debugging: Algorithms.
* lookup_symbol: Symbol Handling.
* LSEEK_NOT_LINEAR: Host Definition.
* make_cleanup: Coding.
* making a distribution tarball: Porting GDB.
* MALLOC_INCOMPATIBLE: Host Definition.
* MEM_FNS_DECLARED: Host Definition.
* MEMORY_INSERT_BREAKPOINT: Target Architecture Definition.
* MEMORY_REMOVE_BREAKPOINT: Target Architecture Definition.
* minimal symbol table: Symbol Handling.
* minsymtabs: Symbol Handling.
* mmalloc: Host Definition.
* mmap: Host Definition.
* MMAP_BASE_ADDRESS: Host Definition.
* MMAP_INCREMENT: Host Definition.
* mmcheck: Host Definition.
* MMCHECK_FORCE: Host Definition.
* NATDEPFILES: Native Debugging.
* native conditionals: Native Debugging.
* native core files: Native Debugging.
* native debugging: Native Debugging.
* NEED_POSIX_SETPGID: Host Definition.
* NEED_TEXT_START_END: Target Architecture Definition.
* nesting level in ui_out functions: User Interface.
* Netware Loadable Module format: Symbol Handling.
* NNPC_REGNUM: Target Architecture Definition.
* NO_HIF_SUPPORT: Target Architecture Definition.
* NO_MMCHECK: Host Definition.
* NO_SIGINTERRUPT: Host Definition.
* NO_STD_REGS: Host Definition.
* NO_SYS_FILE: Host Definition.
* NORETURN: Host Definition.
* NPC_REGNUM: Target Architecture Definition.
* object file formats: Symbol Handling.
* obsolete code: Debugging GDB.
* ONE_PROCESS_WRITETEXT: Native Debugging.
* op_print_tab: Language Support.
* opcodes library: Support Libraries.
* OS9K_VARIABLES_INSIDE_BLOCK: Target Architecture Definition.
* PARM_BOUNDARY: Target Architecture Definition.
* parse_exp_1: Language Support.
* partial symbol table: Symbol Handling.
* PC_IN_CALL_DUMMY: Target Architecture Definition.
* PC_LOAD_SEGMENT: Target Architecture Definition.
* PC_REGNUM: Target Architecture Definition.
* PCC_SOL_BROKEN: Target Architecture Definition.
* PE-COFF format: Symbol Handling.
* pointer representation: Target Architecture Definition.
* POINTER_TO_ADDRESS: Target Architecture Definition.
* POP_FRAME: Target Architecture Definition.
* portability: Coding.
* portable file name handling: Coding.
* porting to new machines: Porting GDB.
* prefixify_subexp: Language Support.
* PREPARE_TO_PROCEED: Native Debugging.
* preparing a release: Porting GDB.
* PRINT_REGISTER_HOOK: Target Architecture Definition.
* print_subexp: Language Support.
* PRINT_TYPELESS_INTEGER: Target Architecture Definition.
* PRINTF_HAS_LONG_DOUBLE: Host Definition.
* PRINTF_HAS_LONG_LONG: Host Definition.
* PROC_NAME_FMT: Native Debugging.
* PROCESS_LINENUMBER_HOOK: Target Architecture Definition.
* program counter: Algorithms.
* PROLOGUE_FIRSTLINE_OVERLAP: Target Architecture Definition.
* promotion to double: Target Architecture Definition.
* prompt: Host Definition.
* PS_REGNUM: Target Architecture Definition.
* psymtabs: Symbol Handling.
* PTRACE_ARG3_TYPE: Native Debugging.
* PTRACE_FP_BUG: Native Debugging.
* PUSH_ARGUMENTS: Target Architecture Definition.
* PUSH_DUMMY_FRAME: Target Architecture Definition.
* R_OK: Host Definition.
* raw representation: Target Architecture Definition.
* read_fp: Target Architecture Definition.
* read_pc: Target Architecture Definition.
* read_sp: Target Architecture Definition.
* reading of symbols: Symbol Handling.
* REG_STRUCT_HAS_ADDR: Target Architecture Definition.
* register data formats, converting: Target Architecture Definition.
* REGISTER_BYTES: Target Architecture Definition.
* REGISTER_CONVERT_TO_RAW: Target Architecture Definition.
* REGISTER_CONVERT_TO_VIRTUAL: Target Architecture Definition.
* REGISTER_CONVERTIBLE: Target Architecture Definition.
* REGISTER_IN_WINDOW_P: Target Architecture Definition.
* REGISTER_NAME: Target Architecture Definition.
* REGISTER_NAMES: Target Architecture Definition.
* REGISTER_RAW_SIZE: Target Architecture Definition.
* REGISTER_U_ADDR: Native Debugging.
* REGISTER_VIRTUAL_SIZE: Target Architecture Definition.
* REGISTER_VIRTUAL_TYPE: Target Architecture Definition.
* regular expressions library: Support Libraries.
* remote debugging support: Host Definition.
* REMOTE_BPT_VECTOR: Target Architecture Definition.
* REMOTE_BREAKPOINT: Target Architecture Definition.
* representations, raw and virtual: Target Architecture Definition.
* requirements for GDB: Requirements.
* return_command: Target Architecture Definition.
* RETURN_VALUE_ON_STACK: Target Architecture Definition.
* returning structures by value: Target Architecture Definition.
* running the test suite: Testsuite.
* SAVE_DUMMY_FRAME_TOS: Target Architecture Definition.
* SCANF_HAS_LONG_DOUBLE: Host Definition.
* SDB_REG_TO_REGNUM: Target Architecture Definition.
* secondary symbol file: Symbol Handling.
* SEEK_CUR: Host Definition.
* SEEK_SET: Host Definition.
* separate data and code address spaces: Target Architecture Definition.
* serial line support: Host Definition.
* set_gdbarch_coerce_float_to_double: Target Architecture Definition.
* setpgid: Host Definition.
* SHELL_COMMAND_CONCAT: Native Debugging.
* SHELL_FILE: Native Debugging.
* SHIFT_INST_REGS: Target Architecture Definition.
* siginterrupt: Host Definition.
* sigsetmask: Host Definition.
* SIGTRAMP_END: Target Architecture Definition.
* SIGTRAMP_START: Target Architecture Definition.
* SIGWINCH_HANDLER: Host Definition.
* SIGWINCH_HANDLER_BODY: Host Definition.
* SIZEOF_CALL_DUMMY_WORDS: Target Architecture Definition.
* SKIP_PERMANENT_BREAKPOINT: Target Architecture Definition.
* SKIP_PROLOGUE: Target Architecture Definition.
* SKIP_PROLOGUE_FRAMELESS_P: Target Architecture Definition.
* SKIP_SOLIB_RESOLVER: Target Architecture Definition.
* SKIP_TRAMPOLINE_CODE: Target Architecture Definition.
* SLASH_STRING: Coding.
* software breakpoints: Algorithms.
* software watchpoints: Algorithms.
* SOFTWARE_SINGLE_STEP: Target Architecture Definition.
* SOFTWARE_SINGLE_STEP_P: Target Architecture Definition.
* SOFUN_ADDRESS_MAYBE_MISSING: Target Architecture Definition.
* SOLIB_ADD: Native Debugging.
* SOLIB_CREATE_INFERIOR_HOOK: Native Debugging.
* SOM debugging info: Symbol Handling.
* SOM format: Symbol Handling.
* source code formatting: Coding.
* SP_REGNUM: Target Architecture Definition.
* spaces, separate data and code address: Target Architecture Definition.
* STAB_REG_TO_REGNUM: Target Architecture Definition.
* stabs debugging info: Symbol Handling.
* stack alignment: Host Definition.
* STACK_ALIGN: Target Architecture Definition.
* standard_coerce_float_to_double: Target Architecture Definition.
* START_INFERIOR_TRAPS_EXPECTED: Native Debugging.
* STEP_SKIPS_DELAY: Target Architecture Definition.
* STOP_SIGNAL: Host Definition.
* STOPPED_BY_WATCHPOINT: Algorithms.
* store_address: Target Architecture Definition.
* STORE_RETURN_VALUE: Target Architecture Definition.
* store_typed_address: Target Architecture Definition.
* struct value, converting register contents to: Target Architecture Definition.
* structures, returning by value: Target Architecture Definition.
* submitting patches: Debugging GDB.
* SUN_FIXED_LBRAC_BUG: Target Architecture Definition.
* SVR4_SHARED_LIBS: Native Debugging.
* sym_fns structure: Symbol Handling.
* symbol files: Symbol Handling.
* symbol lookup: Symbol Handling.
* symbol reading: Symbol Handling.
* SYMBOL_RELOADING_DEFAULT: Target Architecture Definition.
* SYMBOLS_CAN_START_WITH_DOLLAR: Target Architecture Definition.
* symtabs: Symbol Handling.
* system dependencies: Coding.
* table output functions: User Interface.
* target: Overall Structure.
* target architecture definition: Target Architecture Definition.
* target vector: Target Vector Definition.
* TARGET_BYTE_ORDER_DEFAULT: Target Architecture Definition.
* TARGET_BYTE_ORDER_SELECTABLE_P: Target Architecture Definition.
* TARGET_CAN_USE_HARDWARE_WATCHPOINT: Algorithms.
* TARGET_CHAR_BIT: Target Architecture Definition.
* TARGET_COMPLEX_BIT: Target Architecture Definition.
* TARGET_DISABLE_HW_WATCHPOINTS: Algorithms.
* TARGET_DOUBLE_BIT: Target Architecture Definition.
* TARGET_DOUBLE_COMPLEX_BIT: Target Architecture Definition.
* TARGET_ENABLE_HW_WATCHPOINTS: Algorithms.
* TARGET_FLOAT_BIT: Target Architecture Definition.
* TARGET_HAS_HARDWARE_WATCHPOINTS: Algorithms.
* target_insert_hw_breakpoint: Algorithms.
* target_insert_watchpoint: Algorithms.
* TARGET_INT_BIT: Target Architecture Definition.
* TARGET_LONG_BIT: Target Architecture Definition.
* TARGET_LONG_DOUBLE_BIT: Target Architecture Definition.
* TARGET_LONG_LONG_BIT: Target Architecture Definition.
* TARGET_PTR_BIT: Target Architecture Definition.
* TARGET_RANGE_PROFITABLE_FOR_HW_WATCHPOINT: Algorithms.
* TARGET_READ_FP: Target Architecture Definition.
* TARGET_READ_PC: Target Architecture Definition.
* TARGET_READ_SP: Target Architecture Definition.
* TARGET_REGION_OK_FOR_HW_WATCHPOINT: Algorithms.
* TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT: Algorithms.
* target_remove_hw_breakpoint: Algorithms.
* target_remove_watchpoint: Algorithms.
* TARGET_SHORT_BIT: Target Architecture Definition.
* target_stopped_data_address: Algorithms.
* TARGET_VIRTUAL_FRAME_POINTER: Target Architecture Definition.
* TARGET_WRITE_FP: Target Architecture Definition.
* TARGET_WRITE_PC: Target Architecture Definition.
* TARGET_WRITE_SP: Target Architecture Definition.
* TCP remote support: Host Definition.
* TDEPFILES: Target Architecture Definition.
* terminal device: Host Definition.
* test suite: Testsuite.
* test suite organization: Testsuite.
* trimming language-dependent code: Language Support.
* type: Target Architecture Definition.
* type codes: Symbol Handling.
* types: Coding.
* U_REGS_OFFSET: Native Debugging.
* ui_out functions: User Interface.
* ui_out functions, usage examples: User Interface.
* ui_out_field_core_addr: User Interface.
* ui_out_field_fmt: User Interface.
* ui_out_field_int: User Interface.
* ui_out_field_skip: User Interface.
* ui_out_field_stream: User Interface.
* ui_out_field_string: User Interface.
* ui_out_flush: User Interface.
* ui_out_list_begin: User Interface.
* ui_out_list_end: User Interface.
* ui_out_message: User Interface.
* ui_out_spaces: User Interface.
* ui_out_stream_delete: User Interface.
* ui_out_table_begin: User Interface.
* ui_out_table_body: User Interface.
* ui_out_table_end: User Interface.
* ui_out_table_header: User Interface.
* ui_out_text: User Interface.
* ui_out_wrap_hint: User Interface.
* ui_stream: User Interface.
* UINT_MAX: Host Definition.
* ULONG_MAX: Host Definition.
* USE_GENERIC_DUMMY_FRAMES: Host Definition.
* USE_MMALLOC: Host Definition.
* USE_O_NOCTTY: Host Definition.
* USE_PROC_FS: Native Debugging.
* USE_STRUCT_CONVENTION: Target Architecture Definition.
* USG: Host Definition.
* using ui_out functions: User Interface.
* value_as_pointer: Target Architecture Definition.
* value_from_pointer: Target Architecture Definition.
* VARIABLES_INSIDE_BLOCK: Target Architecture Definition.
* virtual representation: Target Architecture Definition.
* volatile: Host Definition.
* watchpoints: Algorithms.
* watchpoints, on x86: Algorithms.
* word-addressed machines: Target Architecture Definition.
* wrap_here: Coding.
* write_fp: Target Architecture Definition.
* write_pc: Target Architecture Definition.
* write_sp: Target Architecture Definition.
* writing tests: Testsuite.
* x86 debug registers: Algorithms.
* XCOFF format: Symbol Handling.
* XDEPFILES: Host Definition.