/* *INDENT-OFF* */ /* ATTRIBUTE_PRINTF confuses indent, avoid running it for now. */ /* Basic, host-specific, and target-specific definitions for GDB. Copyright (C) 1986-2016 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #ifndef DEFS_H #define DEFS_H #ifdef GDBSERVER # error gdbserver should not include gdb/defs.h #endif #include "common-defs.h" #include #include /* The libdecnumber library, on which GDB depends, includes a header file called gstdint.h instead of relying directly on stdint.h. GDB, on the other hand, includes stdint.h directly, relying on the fact that gnulib generates a copy if the system doesn't provide one or if it is missing some features. Unfortunately, gstdint.h and stdint.h cannot be included at the same time, which may happen when we include a file from libdecnumber. The following macro definition effectively prevents the inclusion of gstdint.h, as all the definitions it provides are guarded against the GCC_GENERATED_STDINT_H macro. We already have gnulib/stdint.h included, so it's ok to blank out gstdint.h. */ #define GCC_GENERATED_STDINT_H 1 #include #include #include "gdb_wchar.h" #include "ui-file.h" #include "host-defs.h" #include "common/enum-flags.h" /* Scope types enumerator. List the types of scopes the compiler will accept. */ enum compile_i_scope_types { COMPILE_I_INVALID_SCOPE, /* A simple scope. Wrap an expression into a simple scope that takes no arguments, returns no value, and uses the generic function name "_gdb_expr". */ COMPILE_I_SIMPLE_SCOPE, /* Do not wrap the expression, it has to provide function "_gdb_expr" on its own. */ COMPILE_I_RAW_SCOPE, /* A printable expression scope. Wrap an expression into a scope suitable for the "compile print" command. It uses the generic function name "_gdb_expr". COMPILE_I_PRINT_ADDRESS_SCOPE variant is the usual one, taking address of the object. COMPILE_I_PRINT_VALUE_SCOPE is needed for arrays where the array name already specifies its address. See get_out_value_type. */ COMPILE_I_PRINT_ADDRESS_SCOPE, COMPILE_I_PRINT_VALUE_SCOPE, }; /* Just in case they're not defined in stdio.h. */ #ifndef SEEK_SET #define SEEK_SET 0 #endif #ifndef SEEK_CUR #define SEEK_CUR 1 #endif /* The O_BINARY flag is defined in fcntl.h on some non-Posix platforms. It is used as an access modifier in calls to open(), where it acts similarly to the "b" character in fopen()'s MODE argument. On Posix platforms it should be a no-op, so it is defined as 0 here. This ensures that the symbol may be used freely elsewhere in gdb. */ #ifndef O_BINARY #define O_BINARY 0 #endif #include "hashtab.h" /* * Enable dbx commands if set. */ extern int dbx_commands; /* * System root path, used to find libraries etc. */ extern char *gdb_sysroot; /* * GDB datadir, used to store data files. */ extern char *gdb_datadir; /* * If non-NULL, the possibly relocated path to python's "lib" directory specified with --with-python. */ extern char *python_libdir; /* * Search path for separate debug files. */ extern char *debug_file_directory; /* GDB's SIGINT handler basically sets a flag; code that might take a long time before it gets back to the event loop, and which ought to be interruptible, checks this flag using the QUIT macro, which, if GDB has the terminal, throws a quit exception. In addition to setting a flag, the SIGINT handler also marks a select/poll-able file descriptor as read-ready. That is used by interruptible_select in order to support interrupting blocking I/O in a race-free manner. These functions use the extension_language_ops API to allow extension language(s) and GDB SIGINT handling to coexist seamlessly. */ /* * Evaluate to non-zero if the quit flag is set, zero otherwise. This will clear the quit flag as a side effect. */ extern int check_quit_flag (void); /* * Set the quit flag. */ extern void set_quit_flag (void); /* The current quit handler (and its type). This is called from the QUIT macro. See default_quit_handler below for default behavior. Parts of GDB temporarily override this to e.g., completely suppress Ctrl-C because it would not be safe to throw. E.g., normally, you wouldn't want to quit between a RSP command and its response, as that would break the communication with the target, but you may still want to intercept the Ctrl-C and offer to disconnect if the user presses Ctrl-C multiple times while the target is stuck waiting for the wedged remote stub. */ typedef void (quit_handler_ftype) (void); extern quit_handler_ftype *quit_handler; /* Override the current quit handler. Sets NEW_QUIT_HANDLER as current quit handler, and installs a cleanup that when run restores the previous quit handler. */ struct cleanup * make_cleanup_override_quit_handler (quit_handler_ftype *new_quit_handler); /* The default quit handler. Checks whether Ctrl-C was pressed, and if so: - If GDB owns the terminal, throws a quit exception. - If GDB does not own the terminal, forwards the Ctrl-C to the target. */ extern void default_quit_handler (void); /* Flag that function quit should call quit_force. */ extern volatile int sync_quit_force_run; extern void quit (void); /* Helper for the QUIT macro. */ extern void maybe_quit (void); /* Check whether a Ctrl-C was typed, and if so, call the current quit handler. */ #define QUIT maybe_quit () /* Set the serial event associated with the quit flag. */ extern void quit_serial_event_set (void); /* Clear the serial event associated with the quit flag. */ extern void quit_serial_event_clear (void); /* * Languages represented in the symbol table and elsewhere. This should probably be in language.h, but since enum's can't be forward declared to satisfy opaque references before their actual definition, needs to be here. The constants here are in priority order. In particular, demangling is attempted according to this order. Note that there's ambiguity between the mangling schemes of some of these languages, so some symbols could be successfully demangled by several languages. For that reason, the constants here are sorted in the order we'll attempt demangling them. For example: Rust uses C++ mangling, so must come after C++; Ada must come last (see ada_sniff_from_mangled_name). */ enum language { language_unknown, /* Language not known */ language_auto, /* Placeholder for automatic setting */ language_c, /* C */ language_objc, /* Objective-C */ language_cplus, /* C++ */ language_d, /* D */ language_go, /* Go */ language_fortran, /* Fortran */ language_m2, /* Modula-2 */ language_asm, /* Assembly language */ language_pascal, /* Pascal */ language_opencl, /* OpenCL */ language_rust, /* Rust */ language_minimal, /* All other languages, minimal support only */ language_ada, /* Ada */ nr_languages }; /* The number of bits needed to represent all languages, with enough padding to allow for reasonable growth. */ #define LANGUAGE_BITS 5 gdb_static_assert (nr_languages <= (1 << LANGUAGE_BITS)); enum precision_type { single_precision, double_precision, unspecified_precision }; /* * A generic, not quite boolean, enumeration. This is used for set/show commands in which the options are on/off/automatic. */ enum auto_boolean { AUTO_BOOLEAN_TRUE, AUTO_BOOLEAN_FALSE, AUTO_BOOLEAN_AUTO }; /* * Potential ways that a function can return a value of a given type. */ enum return_value_convention { /* * Where the return value has been squeezed into one or more registers. */ RETURN_VALUE_REGISTER_CONVENTION, /* * Commonly known as the "struct return convention". The caller passes an additional hidden first parameter to the caller. That parameter contains the address at which the value being returned should be stored. While typically, and historically, used for large structs, this is convention is applied to values of many different types. */ RETURN_VALUE_STRUCT_CONVENTION, /* * Like the "struct return convention" above, but where the ABI guarantees that the called function stores the address at which the value being returned is stored in a well-defined location, such as a register or memory slot in the stack frame. Don't use this if the ABI doesn't explicitly guarantees this. */ RETURN_VALUE_ABI_RETURNS_ADDRESS, /* * Like the "struct return convention" above, but where the ABI guarantees that the address at which the value being returned is stored will be available in a well-defined location, such as a register or memory slot in the stack frame. Don't use this if the ABI doesn't explicitly guarantees this. */ RETURN_VALUE_ABI_PRESERVES_ADDRESS, }; /* Needed for various prototypes */ struct symtab; struct breakpoint; struct frame_info; struct gdbarch; struct value; /* From main.c. */ /* This really belong in utils.c (path-utils.c?), but it references some globals that are currently only available to main.c. */ extern char *relocate_gdb_directory (const char *initial, int flag); /* Annotation stuff. */ extern int annotation_level; /* in stack.c */ /* From regex.c or libc. BSD 4.4 declares this with the argument type as "const char *" in unistd.h, so we can't declare the argument as "char *". */ EXTERN_C char *re_comp (const char *); /* From symfile.c */ extern void symbol_file_command (char *, int); /* * Remote targets may wish to use this as their load function. */ extern void generic_load (const char *name, int from_tty); /* * Report on STREAM the performance of memory transfer operation, such as 'load'. @param DATA_COUNT is the number of bytes transferred. @param WRITE_COUNT is the number of separate write operations, or 0, if that information is not available. @param START_TIME is the time at which an operation was started. @param END_TIME is the time at which an operation ended. */ struct timeval; extern void print_transfer_performance (struct ui_file *stream, unsigned long data_count, unsigned long write_count, const struct timeval *start_time, const struct timeval *end_time); /* From top.c */ typedef void initialize_file_ftype (void); extern char *gdb_readline_wrapper (const char *); extern char *command_line_input (const char *, int, char *); extern void print_prompt (void); struct ui; extern int input_interactive_p (struct ui *); extern int info_verbose; /* From printcmd.c */ extern void set_next_address (struct gdbarch *, CORE_ADDR); extern int print_address_symbolic (struct gdbarch *, CORE_ADDR, struct ui_file *, int, char *); extern int build_address_symbolic (struct gdbarch *, CORE_ADDR addr, int do_demangle, char **name, int *offset, char **filename, int *line, int *unmapped); extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *); extern const char *pc_prefix (CORE_ADDR); /* From source.c */ /* See openp function definition for their description. */ #define OPF_TRY_CWD_FIRST 0x01 #define OPF_SEARCH_IN_PATH 0x02 #define OPF_RETURN_REALPATH 0x04 extern int openp (const char *, int, const char *, int, char **); extern int source_full_path_of (const char *, char **); extern void mod_path (char *, char **); extern void add_path (char *, char **, int); extern void directory_switch (char *, int); extern char *source_path; extern void init_source_path (void); /* From exec.c */ /* * Process memory area starting at ADDR with length SIZE. Area is readable iff READ is non-zero, writable if WRITE is non-zero, executable if EXEC is non-zero. Area is possibly changed against its original file based copy if MODIFIED is non-zero. DATA is passed without changes from a caller. */ typedef int (*find_memory_region_ftype) (CORE_ADDR addr, unsigned long size, int read, int write, int exec, int modified, void *data); /* * Possible lvalue types. Like enum language, this should be in value.h, but needs to be here for the same reason. */ enum lval_type { /* * Not an lval. */ not_lval, /* * In memory. */ lval_memory, /* * In a register. Registers are relative to a frame. */ lval_register, /* * In a gdb internal variable. */ lval_internalvar, /* * Value encapsulates a callable defined in an extension language. */ lval_xcallable, /* * Part of a gdb internal variable (structure field). */ lval_internalvar_component, /* * Value's bits are fetched and stored using functions provided by its creator. */ lval_computed }; /* * Control types for commands. */ enum misc_command_type { ok_command, end_command, else_command, nop_command }; enum command_control_type { simple_control, break_control, continue_control, while_control, if_control, commands_control, python_control, compile_control, guile_control, while_stepping_control, invalid_control }; /* * Structure for saved commands lines (for breakpoints, defined commands, etc). */ struct command_line { struct command_line *next; char *line; enum command_control_type control_type; union { struct { enum compile_i_scope_types scope; void *scope_data; } compile; } control_u; /* * The number of elements in body_list. */ int body_count; /* * For composite commands, the nested lists of commands. For example, for "if" command this will contain the then branch and the else branch, if that is available. */ struct command_line **body_list; }; extern struct command_line *read_command_lines (char *, int, int, void (*)(char *, void *), void *); extern struct command_line *read_command_lines_1 (char * (*) (void), int, void (*)(char *, void *), void *); extern void free_command_lines (struct command_line **); /* * Parameters of the "info proc" command. */ enum info_proc_what { /* * Display the default cmdline, cwd and exe outputs. */ IP_MINIMAL, /* * Display `info proc mappings'. */ IP_MAPPINGS, /* * Display `info proc status'. */ IP_STATUS, /* * Display `info proc stat'. */ IP_STAT, /* * Display `info proc cmdline'. */ IP_CMDLINE, /* * Display `info proc exe'. */ IP_EXE, /* * Display `info proc cwd'. */ IP_CWD, /* * Display all of the above. */ IP_ALL }; /* * String containing the current directory (what getwd would return). */ extern char *current_directory; /* * Default radixes for input and output. Only some values supported. */ extern unsigned input_radix; extern unsigned output_radix; /* * Possibilities for prettyformat parameters to routines which print things. Like enum language, this should be in value.h, but needs to be here for the same reason. FIXME: If we can eliminate this as an arg to LA_VAL_PRINT, then we can probably move it back to value.h. */ enum val_prettyformat { Val_no_prettyformat = 0, Val_prettyformat, /* * Use the default setting which the user has specified. */ Val_prettyformat_default }; /* * Optional native machine support. Non-native (and possibly pure multi-arch) targets do not need a "nm.h" file. This will be a symlink to one of the nm-*.h files, built by the `configure' script. */ #ifdef GDB_NM_FILE #include "nm.h" #endif /* Assume that fopen accepts the letter "b" in the mode string. It is demanded by ISO C9X, and should be supported on all platforms that claim to have a standard-conforming C library. On true POSIX systems it will be ignored and have no effect. There may still be systems without a standard-conforming C library where an ISO C9X compiler (GCC) is available. Known examples are SunOS 4.x and 4.3BSD. This assumption means these systems are no longer supported. */ #ifndef FOPEN_RB # include "fopen-bin.h" #endif /* Defaults for system-wide constants (if not defined by xm.h, we fake it). FIXME: Assumes 2's complement arithmetic. */ #if !defined (UINT_MAX) #define UINT_MAX ((unsigned int)(~0)) /* 0xFFFFFFFF for 32-bits */ #endif #if !defined (INT_MAX) #define INT_MAX ((int)(UINT_MAX >> 1)) /* 0x7FFFFFFF for 32-bits */ #endif #if !defined (INT_MIN) #define INT_MIN ((int)((int) ~0 ^ INT_MAX)) /* 0x80000000 for 32-bits */ #endif #if !defined (ULONG_MAX) #define ULONG_MAX ((unsigned long)(~0L)) /* 0xFFFFFFFF for 32-bits */ #endif #if !defined (LONG_MAX) #define LONG_MAX ((long)(ULONG_MAX >> 1)) /* 0x7FFFFFFF for 32-bits */ #endif #if !defined (ULONGEST_MAX) #define ULONGEST_MAX (~(ULONGEST)0) /* 0xFFFFFFFFFFFFFFFF for 64-bits */ #endif #if !defined (LONGEST_MAX) /* 0x7FFFFFFFFFFFFFFF for 64-bits */ #define LONGEST_MAX ((LONGEST)(ULONGEST_MAX >> 1)) #endif /* * Convert a LONGEST to an int. This is used in contexts (e.g. number of arguments to a function, number in a value history, register number, etc.) where the value must not be larger than can fit in an int. */ extern int longest_to_int (LONGEST); /* * List of known OS ABIs. If you change this, make sure to update the table in osabi.c. */ enum gdb_osabi { GDB_OSABI_UNINITIALIZED = -1, /* For struct gdbarch_info. */ GDB_OSABI_UNKNOWN = 0, /* keep this zero */ GDB_OSABI_SVR4, GDB_OSABI_HURD, GDB_OSABI_SOLARIS, GDB_OSABI_LINUX, GDB_OSABI_FREEBSD_AOUT, GDB_OSABI_FREEBSD_ELF, GDB_OSABI_NETBSD_AOUT, GDB_OSABI_NETBSD_ELF, GDB_OSABI_OPENBSD_ELF, GDB_OSABI_WINCE, GDB_OSABI_GO32, GDB_OSABI_IRIX, GDB_OSABI_HPUX_ELF, GDB_OSABI_HPUX_SOM, GDB_OSABI_QNXNTO, GDB_OSABI_CYGWIN, GDB_OSABI_AIX, GDB_OSABI_DICOS, GDB_OSABI_DARWIN, GDB_OSABI_SYMBIAN, GDB_OSABI_OPENVMS, GDB_OSABI_LYNXOS178, GDB_OSABI_NEWLIB, GDB_OSABI_SDE, GDB_OSABI_INVALID /* keep this last */ }; /* Global functions from other, non-gdb GNU thingies. Libiberty thingies are no longer declared here. We include libiberty.h above, instead. */ /* From other system libraries */ #ifndef atof extern double atof (const char *); /* X3.159-1989 4.10.1.1 */ #endif /* Enumerate the requirements a symbol has in order to be evaluated. These are listed in order of "strength" -- a later entry subsumes earlier ones. This fine-grained distinction is important because it allows for the evaluation of a TLS symbol during unwinding -- when unwinding one has access to registers, but not the frame itself, because that is being constructed. */ enum symbol_needs_kind { /* No special requirements -- just memory. */ SYMBOL_NEEDS_NONE, /* The symbol needs registers. */ SYMBOL_NEEDS_REGISTERS, /* The symbol needs a frame. */ SYMBOL_NEEDS_FRAME }; /* Dynamic target-system-dependent parameters for GDB. */ #include "gdbarch.h" /* * Maximum size of a register. Something small, but large enough for all known ISAs. If it turns out to be too small, make it bigger. */ enum { MAX_REGISTER_SIZE = 64 }; /* In findvar.c. */ extern LONGEST extract_signed_integer (const gdb_byte *, int, enum bfd_endian); extern ULONGEST extract_unsigned_integer (const gdb_byte *, int, enum bfd_endian); extern int extract_long_unsigned_integer (const gdb_byte *, int, enum bfd_endian, LONGEST *); extern CORE_ADDR extract_typed_address (const gdb_byte *buf, struct type *type); extern void store_signed_integer (gdb_byte *, int, enum bfd_endian, LONGEST); extern void store_unsigned_integer (gdb_byte *, int, enum bfd_endian, ULONGEST); extern void store_typed_address (gdb_byte *buf, struct type *type, CORE_ADDR addr); /* From valops.c */ extern int watchdog; /* Hooks for alternate command interfaces. */ /* * The name of the interpreter if specified on the command line. */ extern char *interpreter_p; struct target_waitstatus; struct cmd_list_element; extern void (*deprecated_pre_add_symbol_hook) (const char *); extern void (*deprecated_post_add_symbol_hook) (void); extern void (*selected_frame_level_changed_hook) (int); extern int (*deprecated_ui_loop_hook) (int signo); extern void (*deprecated_show_load_progress) (const char *section, unsigned long section_sent, unsigned long section_size, unsigned long total_sent, unsigned long total_size); extern void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, int line, int stopline, int noerror); extern int (*deprecated_query_hook) (const char *, va_list) ATTRIBUTE_FPTR_PRINTF(1,0); extern void (*deprecated_warning_hook) (const char *, va_list) ATTRIBUTE_FPTR_PRINTF(1,0); extern void (*deprecated_interactive_hook) (void); extern void (*deprecated_readline_begin_hook) (char *, ...) ATTRIBUTE_FPTR_PRINTF_1; extern char *(*deprecated_readline_hook) (const char *); extern void (*deprecated_readline_end_hook) (void); extern void (*deprecated_context_hook) (int); extern ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, struct target_waitstatus *status, int options); extern void (*deprecated_attach_hook) (void); extern void (*deprecated_detach_hook) (void); extern void (*deprecated_call_command_hook) (struct cmd_list_element * c, char *cmd, int from_tty); extern int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); /* If this definition isn't overridden by the header files, assume that isatty and fileno exist on this system. */ #ifndef ISATTY #define ISATTY(FP) (isatty (fileno (FP))) #endif /* * A width that can achieve a better legibility for GDB MI mode. */ #define GDB_MI_MSG_WIDTH 80 /* From progspace.c */ extern void initialize_progspace (void); extern void initialize_inferiors (void); /* * Special block numbers */ enum block_enum { GLOBAL_BLOCK = 0, STATIC_BLOCK = 1, FIRST_LOCAL_BLOCK = 2 }; /* User selection used in observer.h and multiple print functions. */ enum user_selected_what_flag { /* Inferior selected. */ USER_SELECTED_INFERIOR = 1 << 1, /* Thread selected. */ USER_SELECTED_THREAD = 1 << 2, /* Frame selected. */ USER_SELECTED_FRAME = 1 << 3 }; DEF_ENUM_FLAGS_TYPE (enum user_selected_what_flag, user_selected_what); #include "utils.h" #endif /* #ifndef DEFS_H */