diff options
Diffstat (limited to 'gdb/value.h')
| -rw-r--r-- | gdb/value.h | 568 |
1 files changed, 0 insertions, 568 deletions
diff --git a/gdb/value.h b/gdb/value.h deleted file mode 100644 index f2c4da7..0000000 --- a/gdb/value.h +++ /dev/null @@ -1,568 +0,0 @@ -/* Definitions for values of C expressions, for GDB. - Copyright 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996 - 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 2 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, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#if !defined (VALUE_H) -#define VALUE_H 1 - -/* - * The structure which defines the type of a value. It should never - * be possible for a program lval value to survive over a call to the inferior - * (ie to be put into the history list or an internal variable). - */ -enum lval_type { - /* Not an lval. */ - not_lval, - /* In memory. Could be a saved register. */ - lval_memory, - /* In a register. */ - lval_register, - /* In a gdb internal variable. */ - lval_internalvar, - /* Part of a gdb internal variable (structure field). */ - lval_internalvar_component, - /* In a register series in a frame not the current one, which may have been - partially saved or saved in different places (otherwise would be - lval_register or lval_memory). */ - lval_reg_frame_relative -}; - -struct value - { - /* Type of value; either not an lval, or one of the various - different possible kinds of lval. */ - enum lval_type lval; - /* Is it modifiable? Only relevant if lval != not_lval. */ - int modifiable; - /* Location of value (if lval). */ - union - { - /* Address in inferior or byte of registers structure. */ - CORE_ADDR address; - /* Pointer to internal variable. */ - struct internalvar *internalvar; - /* Number of register. Only used with - lval_reg_frame_relative. */ - int regnum; - } location; - /* Describes offset of a value within lval of a structure in bytes. - This is used in retrieving contents from target memory. [Note also - the member embedded_offset below.] */ - int offset; - /* Only used for bitfields; number of bits contained in them. */ - int bitsize; - /* Only used for bitfields; position of start of field. - For BITS_BIG_ENDIAN=0 targets, it is the position of the LSB. - For BITS_BIG_ENDIAN=1 targets, it is the position of the MSB. */ - int bitpos; - /* Frame value is relative to. In practice, this address is only - used if the value is stored in several registers in other than - the current frame, and these registers have not all been saved - at the same place in memory. This will be described in the - lval enum above as "lval_reg_frame_relative". */ - CORE_ADDR frame_addr; - /* Type of the value. */ - struct type *type; - /* Type of the enclosing object if this is an embedded subobject. - The member embedded_offset gives the real position of the subobject - if type is not the same as enclosing_type. - - If the type field is a pointer type, then enclosing_type is - a pointer type pointing to the real (enclosing) type of the target - object. */ - struct type *enclosing_type; - /* Values are stored in a chain, so that they can be deleted - easily over calls to the inferior. Values assigned to internal - variables or put into the value history are taken off this - list. */ - struct value *next; - - /* ??? When is this used? */ - union { - CORE_ADDR memaddr; - char *myaddr; - } substring_addr; - - /* Register number if the value is from a register. Is not kept - if you take a field of a structure that is stored in a - register. Shouldn't it be? */ - short regno; - /* If zero, contents of this value are in the contents field. - If nonzero, contents are in inferior memory at address - in the location.address field plus the offset field - (and the lval field should be lval_memory). */ - char lazy; - /* If nonzero, this is the value of a variable which does not - actually exist in the program. */ - char optimized_out; - /* If this value represents an object that is embedded inside a - larger object (e.g., a base subobject in C++), this gives the - offset (in bytes) from the start of the contents buffer where - the embedded object begins. This is required because some C++ - runtime implementations lay out objects (especially virtual bases - with possibly negative offsets to ancestors). - Note: This may be positive or negative! Also note that this offset - is not used when retrieving contents from target memory; the entire - enclosing object has to be retrieved always, and the offset for - that is given by the member offset above. */ - int embedded_offset; - /* If this value represents a pointer to an object that is embedded - in another object, this gives the embedded_offset of the object - that is pointed to. */ - int pointed_to_offset; - /* The BFD section associated with this value. */ - asection *bfd_section; - /* Actual contents of the value. For use of this value; setting - it uses the stuff above. Not valid if lazy is nonzero. - Target byte-order. We force it to be aligned properly for any - possible value. Note that a value therefore extends beyond - what is declared here. */ - union { - long contents[1]; - double force_double_align; - LONGEST force_longlong_align; - char *literal_data; - } aligner; - /* Do not add any new members here -- contents above will trash them */ - }; - -typedef struct value *value_ptr; - -#define VALUE_TYPE(val) (val)->type -#define VALUE_ENCLOSING_TYPE(val) (val)->enclosing_type -#define VALUE_LAZY(val) (val)->lazy -/* VALUE_CONTENTS and VALUE_CONTENTS_RAW both return the address of - the gdb buffer used to hold a copy of the contents of the lval. - VALUE_CONTENTS is used when the contents of the buffer are needed -- - it uses value_fetch_lazy() to load the buffer from the process being - debugged if it hasn't already been loaded. VALUE_CONTENTS_RAW is - used when data is being stored into the buffer, or when it is - certain that the contents of the buffer are valid. - Note: The contents pointer is adjusted by the offset required to - get to the real subobject, if the value happens to represent - something embedded in a larger run-time object. */ - -#define VALUE_CONTENTS_RAW(val) ((char *) (val)->aligner.contents + (val)->embedded_offset) -#define VALUE_CONTENTS(val) ((void)(VALUE_LAZY(val) && value_fetch_lazy(val)),\ - VALUE_CONTENTS_RAW(val)) - -/* The ALL variants of the above two macros do not adjust the returned - pointer by the embedded_offset value. */ - -#define VALUE_CONTENTS_ALL_RAW(val) ((char *) (val)->aligner.contents) -#define VALUE_CONTENTS_ALL(val) ((void) (VALUE_LAZY(val) && value_fetch_lazy(val)),\ - VALUE_CONTENTS_ALL_RAW(val)) - - -extern int value_fetch_lazy PARAMS ((value_ptr val)); - -#define VALUE_LVAL(val) (val)->lval -#define VALUE_ADDRESS(val) (val)->location.address -#define VALUE_INTERNALVAR(val) (val)->location.internalvar -#define VALUE_FRAME_REGNUM(val) ((val)->location.regnum) -#define VALUE_FRAME(val) ((val)->frame_addr) -#define VALUE_OFFSET(val) (val)->offset -#define VALUE_BITSIZE(val) (val)->bitsize -#define VALUE_BITPOS(val) (val)->bitpos -#define VALUE_NEXT(val) (val)->next -#define VALUE_REGNO(val) (val)->regno -#define VALUE_OPTIMIZED_OUT(val) ((val)->optimized_out) -#define VALUE_EMBEDDED_OFFSET(val) ((val)->embedded_offset) -#define VALUE_POINTED_TO_OFFSET(val) ((val)->pointed_to_offset) -#define VALUE_BFD_SECTION(val) ((val)->bfd_section) - -/* Convert a REF to the object referenced. */ - -#define COERCE_REF(arg) \ -do { struct type *value_type_arg_tmp = check_typedef (VALUE_TYPE (arg));\ - if (TYPE_CODE (value_type_arg_tmp) == TYPE_CODE_REF) \ - arg = value_at_lazy (TYPE_TARGET_TYPE (value_type_arg_tmp), \ - unpack_long (VALUE_TYPE (arg), \ - VALUE_CONTENTS (arg)), \ - VALUE_BFD_SECTION (arg)); \ - } while (0) - -/* If ARG is an array, convert it to a pointer. - If ARG is an enum, convert it to an integer. - If ARG is a function, convert it to a function pointer. - - References are dereferenced. */ - -#define COERCE_ARRAY(arg) \ -do { COERCE_REF(arg); \ - if (current_language->c_style_arrays \ - && TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_ARRAY) \ - arg = value_coerce_array (arg); \ - if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_FUNC) \ - arg = value_coerce_function (arg); \ -} while (0) - -#define COERCE_NUMBER(arg) \ - do { COERCE_ARRAY(arg); COERCE_ENUM(arg); } while (0) - -#define COERCE_VARYING_ARRAY(arg, real_arg_type) \ -{ if (chill_varying_type (real_arg_type)) \ - arg = varying_to_slice (arg), real_arg_type = VALUE_TYPE (arg); } - -/* If ARG is an enum, convert it to an integer. */ - -#define COERCE_ENUM(arg) { \ - if (TYPE_CODE (check_typedef (VALUE_TYPE (arg))) == TYPE_CODE_ENUM) \ - arg = value_cast (builtin_type_unsigned_int, arg); \ -} - -/* Internal variables (variables for convenience of use of debugger) - are recorded as a chain of these structures. */ - -struct internalvar -{ - struct internalvar *next; - char *name; - value_ptr value; -}; - -/* Pointer to member function. Depends on compiler implementation. */ - -#define METHOD_PTR_IS_VIRTUAL(ADDR) ((ADDR) & 0x80000000) -#define METHOD_PTR_FROM_VOFFSET(OFFSET) (0x80000000 + (OFFSET)) -#define METHOD_PTR_TO_VOFFSET(ADDR) (~0x80000000 & (ADDR)) - - -#include "symtab.h" -#include "gdbtypes.h" -#include "expression.h" - -#ifdef __STDC__ -struct frame_info; -struct fn_field; -#endif - -extern void -print_address_demangle PARAMS ((CORE_ADDR, GDB_FILE *, int)); - -extern LONGEST value_as_long PARAMS ((value_ptr val)); - -extern DOUBLEST value_as_double PARAMS ((value_ptr val)); - -extern CORE_ADDR value_as_pointer PARAMS ((value_ptr val)); - -extern LONGEST unpack_long PARAMS ((struct type *type, char *valaddr)); - -extern DOUBLEST unpack_double PARAMS ((struct type *type, char *valaddr, - int *invp)); - -extern CORE_ADDR unpack_pointer PARAMS ((struct type *type, char *valaddr)); - -extern LONGEST unpack_field_as_long PARAMS ((struct type *type, char *valaddr, - int fieldno)); - -extern value_ptr value_from_longest PARAMS ((struct type *type, LONGEST num)); - -extern value_ptr value_from_double PARAMS ((struct type *type, DOUBLEST num)); - -extern value_ptr value_at PARAMS ((struct type *type, CORE_ADDR addr, asection *sect)); - -extern value_ptr value_at_lazy PARAMS ((struct type *type, CORE_ADDR addr, asection *sect)); - -extern value_ptr value_from_register PARAMS ((struct type *type, int regnum, - struct frame_info * frame)); - -extern value_ptr value_of_variable PARAMS ((struct symbol *var, - struct block *b)); - -extern value_ptr value_of_register PARAMS ((int regnum)); - -extern int symbol_read_needs_frame PARAMS ((struct symbol *)); - -extern value_ptr read_var_value PARAMS ((struct symbol *var, - struct frame_info *frame)); - -extern value_ptr locate_var_value PARAMS ((struct symbol *var, - struct frame_info *frame)); - -extern value_ptr allocate_value PARAMS ((struct type *type)); - -extern value_ptr allocate_repeat_value PARAMS ((struct type *type, int count)); - -extern value_ptr value_mark PARAMS ((void)); - -extern void value_free_to_mark PARAMS ((value_ptr mark)); - -extern value_ptr value_string PARAMS ((char *ptr, int len)); -extern value_ptr value_bitstring PARAMS ((char *ptr, int len)); - -extern value_ptr value_array PARAMS ((int lowbound, int highbound, - value_ptr *elemvec)); - -extern value_ptr value_concat PARAMS ((value_ptr arg1, value_ptr arg2)); - -extern value_ptr value_binop PARAMS ((value_ptr arg1, value_ptr arg2, - enum exp_opcode op)); - -extern value_ptr value_add PARAMS ((value_ptr arg1, value_ptr arg2)); - -extern value_ptr value_sub PARAMS ((value_ptr arg1, value_ptr arg2)); - -extern value_ptr value_coerce_array PARAMS ((value_ptr arg1)); - -extern value_ptr value_coerce_function PARAMS ((value_ptr arg1)); - -extern value_ptr value_ind PARAMS ((value_ptr arg1)); - -extern value_ptr value_addr PARAMS ((value_ptr arg1)); - -extern value_ptr value_assign PARAMS ((value_ptr toval, value_ptr fromval)); - -extern value_ptr value_neg PARAMS ((value_ptr arg1)); - -extern value_ptr value_complement PARAMS ((value_ptr arg1)); - -extern value_ptr value_struct_elt PARAMS ((value_ptr *argp, value_ptr *args, - char *name, - int *static_memfuncp, char *err)); - -extern value_ptr value_struct_elt_for_reference PARAMS ((struct type *domain, - int offset, - struct type *curtype, - char *name, - struct type *intype)); - -extern value_ptr value_static_field PARAMS ((struct type *type, int fieldno)); - -extern struct fn_field * -value_find_oload_method_list PARAMS ((value_ptr *, char *, int, int *, int *, struct type **, int *)); - -extern value_ptr value_field PARAMS ((value_ptr arg1, int fieldno)); - -extern value_ptr value_primitive_field PARAMS ((value_ptr arg1, int offset, - int fieldno, - struct type *arg_type)); - -extern struct type * -value_rtti_type PARAMS ((value_ptr, int *, int *, int *)); - -extern struct type * -value_rtti_target_type PARAMS ((value_ptr, int *, int *, int *)); - -extern value_ptr -value_full_object PARAMS ((value_ptr, struct type *, int, int, int)); - -extern value_ptr value_cast PARAMS ((struct type *type, value_ptr arg2)); - -extern value_ptr value_zero PARAMS ((struct type *type, enum lval_type lv)); - -extern value_ptr value_repeat PARAMS ((value_ptr arg1, int count)); - -extern value_ptr value_subscript PARAMS ((value_ptr array, value_ptr idx)); - -extern value_ptr value_from_vtable_info PARAMS ((value_ptr arg, - struct type *type)); - -extern value_ptr value_being_returned PARAMS ((struct type *valtype, - char retbuf[REGISTER_BYTES], - int struct_return)); - -extern value_ptr value_in PARAMS ((value_ptr element, value_ptr set)); - -extern int value_bit_index PARAMS ((struct type *type, char *addr, int index)); - -extern int using_struct_return PARAMS ((value_ptr function, CORE_ADDR funcaddr, - struct type *value_type, int gcc_p)); - -extern void set_return_value PARAMS ((value_ptr val)); - -extern value_ptr evaluate_expression PARAMS ((struct expression *exp)); - -extern value_ptr evaluate_type PARAMS ((struct expression *exp)); - -extern value_ptr evaluate_subexp_with_coercion PARAMS ((struct expression *, - int *, enum noside)); - -extern value_ptr parse_and_eval PARAMS ((char *exp)); - -extern value_ptr parse_to_comma_and_eval PARAMS ((char **expp)); - -extern struct type *parse_and_eval_type PARAMS ((char *p, int length)); - -extern CORE_ADDR parse_and_eval_address PARAMS ((char *exp)); - -extern CORE_ADDR parse_and_eval_address_1 PARAMS ((char **expptr)); - -extern value_ptr access_value_history PARAMS ((int num)); - -extern value_ptr value_of_internalvar PARAMS ((struct internalvar *var)); - -extern void set_internalvar PARAMS ((struct internalvar *var, value_ptr val)); - -extern void set_internalvar_component PARAMS ((struct internalvar *var, - int offset, - int bitpos, int bitsize, - value_ptr newvalue)); - -extern struct internalvar *lookup_internalvar PARAMS ((char *name)); - -extern int value_equal PARAMS ((value_ptr arg1, value_ptr arg2)); - -extern int value_less PARAMS ((value_ptr arg1, value_ptr arg2)); - -extern int value_logical_not PARAMS ((value_ptr arg1)); - -/* C++ */ - -extern value_ptr value_of_this PARAMS ((int complain)); - -extern value_ptr value_x_binop PARAMS ((value_ptr arg1, value_ptr arg2, - enum exp_opcode op, - enum exp_opcode otherop, - enum noside noside)); - -extern value_ptr value_x_unop PARAMS ((value_ptr arg1, enum exp_opcode op, - enum noside noside)); - -extern value_ptr value_fn_field PARAMS ((value_ptr *arg1p, struct fn_field *f, - int j, - struct type* type, int offset)); - -extern value_ptr value_virtual_fn_field PARAMS ((value_ptr *arg1p, - struct fn_field *f, int j, - struct type *type, - int offset)); - -extern int binop_user_defined_p PARAMS ((enum exp_opcode op, - value_ptr arg1, value_ptr arg2)); - -extern int unop_user_defined_p PARAMS ((enum exp_opcode op, value_ptr arg1)); - -extern int destructor_name_p PARAMS ((const char *name, - const struct type *type)); - -#define value_free(val) free ((PTR)val) - -extern void free_all_values PARAMS ((void)); - -extern void release_value PARAMS ((value_ptr val)); - -extern int record_latest_value PARAMS ((value_ptr val)); - -extern void registers_changed PARAMS ((void)); - -extern void read_register_bytes PARAMS ((int regbyte, char *myaddr, int len)); - -extern void write_register_bytes PARAMS ((int regbyte, char *myaddr, int len)); - -extern void -read_register_gen PARAMS ((int regno, char *myaddr)); - -extern CORE_ADDR -read_register PARAMS ((int regno)); - -extern CORE_ADDR -read_register_pid PARAMS ((int regno, int pid)); - -extern void -write_register PARAMS ((int regno, LONGEST val)); - -extern void -write_register_pid PARAMS ((int regno, LONGEST val, int pid)); - -extern void -supply_register PARAMS ((int regno, char *val)); - -extern void -get_saved_register PARAMS ((char *raw_buffer, int *optimized, - CORE_ADDR *addrp, struct frame_info *frame, - int regnum, enum lval_type *lval)); - -extern void -modify_field PARAMS ((char *addr, LONGEST fieldval, int bitpos, int bitsize)); - -extern void -type_print PARAMS ((struct type *type, char *varstring, GDB_FILE *stream, - int show)); - -extern char *baseclass_addr PARAMS ((struct type *type, int index, - char *valaddr, - value_ptr *valuep, int *errp)); - -extern void -print_longest PARAMS ((GDB_FILE *stream, int format, int use_local, - LONGEST val)); - -extern void -print_floating PARAMS ((char *valaddr, struct type *type, GDB_FILE *stream)); - -extern int value_print PARAMS ((value_ptr val, GDB_FILE *stream, int format, - enum val_prettyprint pretty)); - -extern void -value_print_array_elements PARAMS ((value_ptr val, GDB_FILE* stream, - int format, enum val_prettyprint pretty)); - -extern value_ptr -value_release_to_mark PARAMS ((value_ptr mark)); - -extern int -val_print PARAMS ((struct type *type, char *valaddr, int embedded_offset, CORE_ADDR address, - GDB_FILE *stream, int format, int deref_ref, - int recurse, enum val_prettyprint pretty)); - -extern int -val_print_string PARAMS ((CORE_ADDR addr, int len, int width, GDB_FILE *stream)); - -extern void -print_variable_value PARAMS ((struct symbol *var, struct frame_info *frame, - GDB_FILE *stream)); - -extern int check_field PARAMS ((value_ptr, const char *)); - -extern void -c_typedef_print PARAMS ((struct type *type, struct symbol *news, GDB_FILE *stream)); - -extern char * -internalvar_name PARAMS ((struct internalvar *var)); - -extern void -clear_value_history PARAMS ((void)); - -extern void -clear_internalvars PARAMS ((void)); - -/* From values.c */ - -extern value_ptr value_copy PARAMS ((value_ptr)); - -extern int baseclass_offset PARAMS ((struct type *, int, char *, CORE_ADDR)); - -/* From valops.c */ - -extern value_ptr varying_to_slice PARAMS ((value_ptr)); - -extern value_ptr value_slice PARAMS ((value_ptr, int, int)); - -extern value_ptr call_function_by_hand PARAMS ((value_ptr, int, value_ptr *)); - -extern value_ptr value_literal_complex PARAMS ((value_ptr, value_ptr, struct type*)); - -extern void find_rt_vbase_offset PARAMS ((struct type *, struct type *, char *, int, int *, int *)); - -extern value_ptr find_function_in_inferior PARAMS ((char *)); - -extern value_ptr value_allocate_space_in_inferior PARAMS ((int)); - -#endif /* !defined (VALUE_H) */ |