X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fvalue.h;h=08162474211d2e72e356eb1d14a224ca196776af;hb=1b61f46da5e55bf2df243215f34ffbca4bcf6d9e;hp=20169374062b872a5b87dfc5d5853e32c1e07f76;hpb=b562120198d9fa2c191823508813daa3b62a3a37;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/value.h b/gdb/value.h index 2016937406..0816247421 100644 --- a/gdb/value.h +++ b/gdb/value.h @@ -1,6 +1,6 @@ /* Definitions for values of C expressions, for GDB. - Copyright (C) 1986-2018 Free Software Foundation, Inc. + Copyright (C) 1986-2019 Free Software Foundation, Inc. This file is part of GDB. @@ -22,7 +22,7 @@ #include "frame.h" /* For struct frame_id. */ #include "extension.h" -#include "common/gdb_ref_ptr.h" +#include "gdbsupport/gdb_ref_ptr.h" struct block; struct expression; @@ -81,6 +81,8 @@ struct value_print_options; value_contents_eq for more info. */ +extern bool overload_resolution; + /* 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 (i.e. to be put into the history list or an internal @@ -88,12 +90,12 @@ struct value_print_options; struct value; -/* Decrease VAL's reference count. When the reference count drops to - 0, VAL will be freed. */ +/* Increase VAL's reference count. */ -extern struct value *value_incref (struct value *val); +extern void value_incref (struct value *val); -/* Increate VAL's reference count. VAL is returned. */ +/* Decrease VAL's reference count. When the reference count drops to + 0, VAL will be freed. */ extern void value_decref (struct value *val); @@ -144,8 +146,8 @@ extern LONGEST value_bitsize (const struct value *); extern void set_value_bitsize (struct value *, LONGEST bit); /* Only used for bitfields; position of start of field. For - gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For - gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */ + little-endian targets, it is the position of the LSB. For + big-endian targets, it is the position of the MSB. */ extern LONGEST value_bitpos (const struct value *); extern void set_value_bitpos (struct value *, LONGEST bit); @@ -566,7 +568,7 @@ extern void mark_value_bits_unavailable (struct value *value, Optimized-out contents are equal to optimized-out contents, and are not equal to non-optimized-out contents. - Unavailable contente are equal to unavailable contents, and are not + Unavailable contents are equal to unavailable contents, and are not equal to non-unavailable contents. For example, if 'x's represent an unavailable byte, and 'V' and 'Z' @@ -669,6 +671,7 @@ extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num); extern struct value *value_from_longest (struct type *type, LONGEST num); extern struct value *value_from_ulongest (struct type *type, ULONGEST num); extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr); +extern struct value *value_from_host_double (struct type *type, double d); extern struct value *value_from_history_ref (const char *, const char **); extern struct value *value_from_component (struct value *, struct type *, LONGEST); @@ -792,7 +795,10 @@ extern struct value *value_ptradd (struct value *arg1, LONGEST arg2); extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2); -extern int value_must_coerce_to_target (struct value *arg1); +/* Return true if VAL does not live in target memory, but should in order + to operate on it. Otherwise return false. */ + +extern bool value_must_coerce_to_target (struct value *arg1); extern struct value *value_coerce_to_target (struct value *arg1); @@ -835,7 +841,7 @@ extern struct value *value_static_field (struct type *type, int fieldno); enum oload_search_type { NON_METHOD, METHOD, BOTH }; -extern int find_overload_match (struct value **args, int nargs, +extern int find_overload_match (gdb::array_view args, const char *name, enum oload_search_type method, struct value **objp, struct symbol *fsym, @@ -915,7 +921,7 @@ extern value *eval_skip_value (expression *exp); extern void fetch_subexp_value (struct expression *exp, int *pc, struct value **valp, struct value **resultp, - struct value **val_chain, + std::vector *val_chain, int preserve_errors); extern const char *extract_field_op (struct expression *exp, int *subexp); @@ -1053,8 +1059,6 @@ extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1); extern int destructor_name_p (const char *name, struct type *type); -extern void free_value_chain (struct value *v); - extern value_ref_ptr release_value (struct value *val); extern int record_latest_value (struct value *val); @@ -1084,7 +1088,14 @@ extern void value_print_array_elements (struct value *val, struct ui_file *stream, int format, enum val_prettyformat pretty); -extern struct value *value_release_to_mark (const struct value *mark); +/* Release values from the value chain and return them. Values + created after MARK are released. If MARK is nullptr, or if MARK is + not found on the value chain, then all values are released. Values + are returned in reverse order of creation; that is, newest + first. */ + +extern std::vector value_release_to_mark + (const struct value *mark); extern void val_print (struct type *type, LONGEST embedded_offset, CORE_ADDR address, @@ -1143,7 +1154,8 @@ extern struct value *find_function_in_inferior (const char *, extern struct value *value_allocate_space_in_inferior (int); extern struct value *value_subscripted_rvalue (struct value *array, - LONGEST index, int lowerbound); + LONGEST index, + LONGEST lowerbound); /* User function handler. */ @@ -1153,9 +1165,22 @@ typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch, int argc, struct value **argv); -void add_internal_function (const char *name, const char *doc, - internal_function_fn handler, - void *cookie); +/* Add a new internal function. NAME is the name of the function; DOC + is a documentation string describing the function. HANDLER is + called when the function is invoked. COOKIE is an arbitrary + pointer which is passed to HANDLER and is intended for "user + data". */ + +extern void add_internal_function (const char *name, const char *doc, + internal_function_fn handler, + void *cookie); + +/* This overload takes an allocated documentation string. */ + +extern void add_internal_function (gdb::unique_xmalloc_ptr &&name, + gdb::unique_xmalloc_ptr &&doc, + internal_function_fn handler, + void *cookie); struct value *call_internal_function (struct gdbarch *gdbarch, const struct language_defn *language, @@ -1170,10 +1195,10 @@ char *value_internal_function_name (struct value *); extern struct value *value_from_xmethod (xmethod_worker_up &&worker); extern struct type *result_type_of_xmethod (struct value *method, - int argc, struct value **argv); + gdb::array_view argv); extern struct value *call_xmethod (struct value *method, - int argc, struct value **argv); + gdb::array_view argv); /* Given a discriminated union type and some corresponding value contents, this will return the field index of the currently active @@ -1183,4 +1208,8 @@ extern struct value *call_xmethod (struct value *method, extern int value_union_variant (struct type *union_type, const gdb_byte *contents); +/* Destroy the values currently allocated. This is called when GDB is + exiting (e.g., on quit_force). */ +extern void finalize_values (); + #endif /* !defined (VALUE_H) */