/* Symbol table definitions for GDB.
- Copyright (C) 1986-2014 Free Software Foundation, Inc.
+ Copyright (C) 1986-2016 Free Software Foundation, Inc.
This file is part of GDB.
#include "vec.h"
#include "gdb_vecs.h"
#include "gdbtypes.h"
+#include "common/enum-flags.h"
/* Opaque declarations. */
struct ui_file;
struct language_defn;
struct probe;
struct common_block;
+struct obj_section;
+struct cmd_list_element;
/* Some of the structures in this file are space critical.
The space-critical structures are:
--chastain 2003-08-21 */
-/* Struct for storing C++ specific information. Allocated when needed. */
-
-struct cplus_specific
-{
- const char *demangled_name;
-};
-
/* Define a structure for the information that is common to all symbol types,
including minimal symbols, partial symbols, and full symbols. In a
multilanguage environment, some language specific information may need to
{
LONGEST ivalue;
- struct block *block;
+ const struct block *block;
const gdb_byte *bytes;
/* A common block. Used with LOC_COMMON_BLOCK. */
- struct common_block *common_block;
+ const struct common_block *common_block;
/* For opaque typedef struct chain. */
struct obstack *obstack;
/* This is used by languages which wish to store a demangled name.
- currently used by Ada, Java, and Objective C. */
- struct mangled_lang
- {
- const char *demangled_name;
- }
- mangled_lang;
-
- struct cplus_specific *cplus_specific;
+ currently used by Ada, C++, Java, and Objective C. */
+ const char *demangled_name;
}
language_specific;
This is used to select one of the fields from the language specific
union above. */
- ENUM_BITFIELD(language) language : 8;
+ ENUM_BITFIELD(language) language : LANGUAGE_BITS;
- /* This is only used by Ada. If set, then the 'mangled_lang' field
+ /* This is only used by Ada. If set, then the 'demangled_name' field
of language_specific is valid. Otherwise, the 'obstack' field is
valid. */
unsigned int ada_mangled : 1;
extern int demangle;
/* Macro that returns the name to be used when sorting and searching symbols.
- In C++, Chill, and Java, we search for the demangled form of a name,
+ In C++ and Java, we search for the demangled form of a name,
and so sort symbols accordingly. In Ada, however, we search by mangled
name. If there is no distinct demangled name, then SYMBOL_SEARCH_NAME
returns the same value (same pointer) as SYMBOL_LINKAGE_NAME. */
within a given .o file. */
mst_file_text, /* Static version of mst_text */
mst_file_data, /* Static version of mst_data */
- mst_file_bss /* Static version of mst_bss */
+ mst_file_bss, /* Static version of mst_bss */
+ nr_minsym_types
};
+/* The number of enum minimal_symbol_type values, with some padding for
+ reasonable growth. */
+#define MINSYM_TYPE_BITS 4
+gdb_static_assert (nr_minsym_types <= (1 << MINSYM_TYPE_BITS));
+
/* Define a simple structure used to hold some very basic information about
all defined global symbols (text, data, bss, abs, etc). The only required
information is the general_symbol_info.
struct general_symbol_info mginfo;
- /* Size of this symbol. end_psymtab in dbxread.c uses this
+ /* Size of this symbol. dbx_end_psymtab in dbxread.c uses this
information to calculate the end of the partial symtab based on the
address of the last symbol plus the size of the last symbol. */
/* Classification type for this minimal symbol. */
- ENUM_BITFIELD(minimal_symbol_type) type : 8;
+ ENUM_BITFIELD(minimal_symbol_type) type : MINSYM_TYPE_BITS;
/* Non-zero if this symbol was created by gdb.
Such symbols do not appear in the output of "info var|fun". */
#define MSYMBOL_TYPE(msymbol) (msymbol)->type
#define MSYMBOL_VALUE(symbol) (symbol)->mginfo.value.ivalue
-#define MSYMBOL_VALUE_ADDRESS(symbol) ((symbol)->mginfo.value.address + 0)
-#define SET_MSYMBOL_VALUE_ADDRESS(symbol, new_value) \
+/* The unrelocated address of the minimal symbol. */
+#define MSYMBOL_VALUE_RAW_ADDRESS(symbol) ((symbol)->mginfo.value.address + 0)
+/* The relocated address of the minimal symbol, using the section
+ offsets from OBJFILE. */
+#define MSYMBOL_VALUE_ADDRESS(objfile, symbol) \
+ ((symbol)->mginfo.value.address \
+ + ANOFFSET ((objfile)->section_offsets, ((symbol)->mginfo.section)))
+/* For a bound minsym, we can easily compute the address directly. */
+#define BMSYMBOL_VALUE_ADDRESS(symbol) \
+ MSYMBOL_VALUE_ADDRESS ((symbol).objfile, (symbol).minsym)
+#define SET_MSYMBOL_VALUE_ADDRESS(symbol, new_value) \
((symbol)->mginfo.value.address = (new_value))
#define MSYMBOL_VALUE_BYTES(symbol) (symbol)->mginfo.value.bytes
#define MSYMBOL_BLOCK_VALUE(symbol) (symbol)->mginfo.value.block
/* Fortran common blocks. Their naming must be separate from VAR_DOMAIN.
They also always use LOC_COMMON_BLOCK. */
- COMMON_BLOCK_DOMAIN
+ COMMON_BLOCK_DOMAIN,
+
+ /* This must remain last. */
+ NR_DOMAINS
} domain_enum;
+/* The number of bits in a symbol used to represent the domain. */
+
+#define SYMBOL_DOMAIN_BITS 3
+gdb_static_assert (NR_DOMAINS <= (1 << SYMBOL_DOMAIN_BITS));
+
extern const char *domain_name (domain_enum);
/* Searching domains, used for `search_symbols'. Element numbers are
not find it in the full symbol table. But a reference to an external
symbol in a local block shadowing other definition requires full symbol
without possibly having its address available for LOC_STATIC. Testcase
- is provided as `gdb.dwarf2/dw2-unresolved.exp'. */
+ is provided as `gdb.dwarf2/dw2-unresolved.exp'.
+
+ This is also used for thread local storage (TLS) variables. In this case,
+ the address of the TLS variable must be determined when the variable is
+ referenced, from the MSYMBOL_VALUE_RAW_ADDRESS, which is the offset
+ of the TLS variable in the thread local storage of the shared
+ library/object. */
LOC_UNRESOLVED,
LOC_FINAL_VALUE
};
+/* The number of bits needed for values in enum address_class, with some
+ padding for reasonable growth, and room for run-time registered address
+ classes. See symtab.c:MAX_SYMBOL_IMPLS.
+ This is a #define so that we can have a assertion elsewhere to
+ verify that we have reserved enough space for synthetic address
+ classes. */
+#define SYMBOL_ACLASS_BITS 5
+gdb_static_assert (LOC_FINAL_VALUE <= (1 << SYMBOL_ACLASS_BITS));
+
/* The methods needed to implement LOC_COMPUTED. These methods can
use the symbol's .aux_value for additional per-symbol information.
void (*tracepoint_var_ref) (struct symbol *symbol, struct gdbarch *gdbarch,
struct agent_expr *ax, struct axs_value *value);
+
+ /* Generate C code to compute the location of SYMBOL. The C code is
+ emitted to STREAM. GDBARCH is the current architecture and PC is
+ the PC at which SYMBOL's location should be evaluated.
+ REGISTERS_USED is a vector indexed by register number; the
+ generator function should set an element in this vector if the
+ corresponding register is needed by the location computation.
+ The generated C code must assign the location to a local
+ variable; this variable's name is RESULT_NAME. */
+
+ void (*generate_c_location) (struct symbol *symbol, struct ui_file *stream,
+ struct gdbarch *gdbarch,
+ unsigned char *registers_used,
+ CORE_ADDR pc, const char *result_name);
+
};
/* The methods needed to implement LOC_BLOCK for inferior functions.
uninitialized in such case. */
void (*find_frame_base_location) (struct symbol *framefunc, CORE_ADDR pc,
const gdb_byte **start, size_t *length);
+
+ /* Return the frame base address. FRAME is the frame for which we want to
+ compute the base address while FRAMEFUNC is the symbol for the
+ corresponding function. Return 0 on failure (FRAMEFUNC may not hold the
+ information we need).
+
+ This method is designed to work with static links (nested functions
+ handling). Static links are function properties whose evaluation returns
+ the frame base address for the enclosing frame. However, there are
+ multiple definitions for "frame base": the content of the frame base
+ register, the CFA as defined by DWARF unwinding information, ...
+
+ So this specific method is supposed to compute the frame base address such
+ as for nested fuctions, the static link computes the same address. For
+ instance, considering DWARF debugging information, the static link is
+ computed with DW_AT_static_link and this method must be used to compute
+ the corresponding DW_AT_frame_base attribute. */
+ CORE_ADDR (*get_frame_base) (struct symbol *framefunc,
+ struct frame_info *frame);
};
/* Functions used with LOC_REGISTER and LOC_REGPARM_ADDR. */
const struct symbol_register_ops *ops_register;
};
-/* The number of bits we reserve in a symbol for the aclass index.
- This is a #define so that we can have a assertion elsewhere to
- verify that we have reserved enough space for synthetic address
- classes. */
-
-#define SYMBOL_ACLASS_BITS 6
-
/* This structure is space critical. See space comments at the top. */
struct symbol
struct type *type;
- /* The symbol table containing this symbol. This is the file
- associated with LINE. It can be NULL during symbols read-in but it is
- never NULL during normal operation. */
- struct symtab *symtab;
+ /* The owner of this symbol.
+ Which one to use is defined by symbol.is_objfile_owned. */
+
+ union
+ {
+ /* The symbol table containing this symbol. This is the file associated
+ with LINE. It can be NULL during symbols read-in but it is never NULL
+ during normal operation. */
+ struct symtab *symtab;
+
+ /* For types defined by the architecture. */
+ struct gdbarch *arch;
+ } owner;
/* Domain code. */
- ENUM_BITFIELD(domain_enum_tag) domain : 6;
+ ENUM_BITFIELD(domain_enum_tag) domain : SYMBOL_DOMAIN_BITS;
/* Address class. This holds an index into the 'symbol_impls'
table. The actual enum address_class value is stored there,
unsigned int aclass_index : SYMBOL_ACLASS_BITS;
+ /* If non-zero then symbol is objfile-owned, use owner.symtab.
+ Otherwise symbol is arch-owned, use owner.arch. */
+
+ unsigned int is_objfile_owned : 1;
+
/* Whether this is an argument. */
unsigned is_argument : 1;
SYMBOL_INLINED set) this is the line number of the function's call
site. Inlined function symbols are not definitions, and they are
never found by symbol table lookup.
+ If this symbol is arch-owned, LINE shall be zero.
FIXME: Should we really make the assumption that nobody will try
to debug files longer than 64K lines? What about machine
/* An arbitrary data pointer, allowing symbol readers to record
additional information on a per-symbol basis. Note that this data
must be allocated using the same obstack as the symbol itself. */
- /* So far it is only used by LOC_COMPUTED to
- find the location information. For a LOC_BLOCK symbol
- for a function in a compilation unit compiled with DWARF 2
- information, this is information used internally by the DWARF 2
- code --- specifically, the location expression for the frame
+ /* So far it is only used by:
+ LOC_COMPUTED: to find the location information
+ LOC_BLOCK (DWARF2 function): information used internally by the
+ DWARF 2 code --- specifically, the location expression for the frame
base for this function. */
/* FIXME drow/2003-02-21: For the LOC_BLOCK case, it might be better
to add a magic symbol to the block containing this information,
struct symbol *hash_next;
};
+/* Several lookup functions return both a symbol and the block in which the
+ symbol is found. This structure is used in these cases. */
+
+struct block_symbol
+{
+ /* The symbol that was found, or NULL if no symbol was found. */
+ struct symbol *symbol;
+
+ /* If SYMBOL is not NULL, then this is the block in which the symbol is
+ defined. */
+ const struct block *block;
+};
+
extern const struct symbol_impl *symbol_impls;
+/* For convenience. All fields are NULL. This means "there is no
+ symbol". */
+extern const struct block_symbol null_block_symbol;
+
+/* Note: There is no accessor macro for symbol.owner because it is
+ "private". */
+
#define SYMBOL_DOMAIN(symbol) (symbol)->domain
#define SYMBOL_IMPL(symbol) (symbol_impls[(symbol)->aclass_index])
#define SYMBOL_ACLASS_INDEX(symbol) (symbol)->aclass_index
#define SYMBOL_CLASS(symbol) (SYMBOL_IMPL (symbol).aclass)
+#define SYMBOL_OBJFILE_OWNED(symbol) ((symbol)->is_objfile_owned)
#define SYMBOL_IS_ARGUMENT(symbol) (symbol)->is_argument
#define SYMBOL_INLINED(symbol) (symbol)->is_inlined
#define SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION(symbol) \
(symbol)->is_cplus_template_function
#define SYMBOL_TYPE(symbol) (symbol)->type
#define SYMBOL_LINE(symbol) (symbol)->line
-#define SYMBOL_SYMTAB(symbol) (symbol)->symtab
#define SYMBOL_COMPUTED_OPS(symbol) (SYMBOL_IMPL (symbol).ops_computed)
#define SYMBOL_BLOCK_OPS(symbol) (SYMBOL_IMPL (symbol).ops_block)
#define SYMBOL_REGISTER_OPS(symbol) (SYMBOL_IMPL (symbol).ops_register)
#define SYMBOL_LOCATION_BATON(symbol) (symbol)->aux_value
-#define SYMBOL_OBJFILE(symbol) (SYMBOL_SYMTAB (symbol)->objfile)
extern int register_symbol_computed_impl (enum address_class,
const struct symbol_computed_ops *);
extern int register_symbol_register_impl (enum address_class,
const struct symbol_register_ops *);
+/* Return the OBJFILE of SYMBOL.
+ It is an error to call this if symbol.is_objfile_owned is false, which
+ only happens for architecture-provided types. */
+
+extern struct objfile *symbol_objfile (const struct symbol *symbol);
+
+/* Return the ARCH of SYMBOL. */
+
+extern struct gdbarch *symbol_arch (const struct symbol *symbol);
+
+/* Return the SYMTAB of SYMBOL.
+ It is an error to call this if symbol.is_objfile_owned is false, which
+ only happens for architecture-provided types. */
+
+extern struct symtab *symbol_symtab (const struct symbol *symbol);
+
+/* Set the symtab of SYMBOL to SYMTAB.
+ It is an error to call this if symbol.is_objfile_owned is false, which
+ only happens for architecture-provided types. */
+
+extern void symbol_set_symtab (struct symbol *symbol, struct symtab *symtab);
+
/* An instance of this type is used to represent a C++ template
function. It includes a "struct symbol" as a kind of base class;
users downcast to "struct template_symbol *" when needed. A symbol
+ sizeof (((struct section_offsets *) 0)->offsets) * ((n)-1))
/* Each source file or header is represented by a struct symtab.
+ The name "symtab" is historical, another name for it is "filetab".
These objects are chained through the `next' field. */
struct symtab
{
- /* Unordered chain of all existing symtabs of this objfile. */
+ /* Unordered chain of all filetabs in the compunit, with the exception
+ that the "main" source file is the first entry in the list. */
struct symtab *next;
- /* List of all symbol scope blocks for this symtab. May be shared
- between different symtabs (and normally is for all the symtabs
- in a given compilation unit). */
+ /* Backlink to containing compunit symtab. */
- struct blockvector *blockvector;
+ struct compunit_symtab *compunit_symtab;
/* Table mapping core addresses to line numbers for this file.
Can be NULL if none. Never shared between different symtabs. */
struct linetable *linetable;
- /* Section in objfile->section_offsets for the blockvector and
- the linetable. Probably always SECT_OFF_TEXT. */
-
- int block_line_section;
-
- /* If several symtabs share a blockvector, exactly one of them
- should be designated the primary, so that the blockvector
- is relocated exactly once by objfile_relocate. */
-
- unsigned int primary : 1;
-
- /* Symtab has been compiled with both optimizations and debug info so that
- GDB may stop skipping prologues as variables locations are valid already
- at function entry points. */
-
- unsigned int locations_valid : 1;
-
- /* DWARF unwinder for this CU is valid even for epilogues (PC at the return
- instruction). This is supported by GCC since 4.5.0. */
-
- unsigned int epilogue_unwind_valid : 1;
-
- /* The macro table for this symtab. Like the blockvector, this
- may be shared between different symtabs --- and normally is for
- all the symtabs in a given compilation unit. */
- struct macro_table *macro_table;
-
/* Name of this source file. This pointer is never NULL. */
const char *filename;
- /* Directory in which it was compiled, or NULL if we don't know. */
-
- const char *dirname;
-
/* Total number of lines found in source file. */
int nlines;
enum language language;
- /* String that identifies the format of the debugging information, such
- as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful
+ /* Full name of file as found by searching the source path.
+ NULL if not yet known. */
+
+ char *fullname;
+};
+
+#define SYMTAB_COMPUNIT(symtab) ((symtab)->compunit_symtab)
+#define SYMTAB_LINETABLE(symtab) ((symtab)->linetable)
+#define SYMTAB_LANGUAGE(symtab) ((symtab)->language)
+#define SYMTAB_BLOCKVECTOR(symtab) \
+ COMPUNIT_BLOCKVECTOR (SYMTAB_COMPUNIT (symtab))
+#define SYMTAB_OBJFILE(symtab) \
+ COMPUNIT_OBJFILE (SYMTAB_COMPUNIT (symtab))
+#define SYMTAB_PSPACE(symtab) (SYMTAB_OBJFILE (symtab)->pspace)
+#define SYMTAB_DIRNAME(symtab) \
+ COMPUNIT_DIRNAME (SYMTAB_COMPUNIT (symtab))
+
+typedef struct symtab *symtab_ptr;
+DEF_VEC_P (symtab_ptr);
+
+/* Compunit symtabs contain the actual "symbol table", aka blockvector, as well
+ as the list of all source files (what gdb has historically associated with
+ the term "symtab").
+ Additional information is recorded here that is common to all symtabs in a
+ compilation unit (DWARF or otherwise).
+
+ Example:
+ For the case of a program built out of these files:
+
+ foo.c
+ foo1.h
+ foo2.h
+ bar.c
+ foo1.h
+ bar.h
+
+ This is recorded as:
+
+ objfile -> foo.c(cu) -> bar.c(cu) -> NULL
+ | |
+ v v
+ foo.c bar.c
+ | |
+ v v
+ foo1.h foo1.h
+ | |
+ v v
+ foo2.h bar.h
+ | |
+ v v
+ NULL NULL
+
+ where "foo.c(cu)" and "bar.c(cu)" are struct compunit_symtab objects,
+ and the files foo.c, etc. are struct symtab objects. */
+
+struct compunit_symtab
+{
+ /* Unordered chain of all compunit symtabs of this objfile. */
+ struct compunit_symtab *next;
+
+ /* Object file from which this symtab information was read. */
+ struct objfile *objfile;
+
+ /* Name of the symtab.
+ This is *not* intended to be a usable filename, and is
+ for debugging purposes only. */
+ const char *name;
+
+ /* Unordered list of file symtabs, except that by convention the "main"
+ source file (e.g., .c, .cc) is guaranteed to be first.
+ Each symtab is a file, either the "main" source file (e.g., .c, .cc)
+ or header (e.g., .h). */
+ struct symtab *filetabs;
+
+ /* Last entry in FILETABS list.
+ Subfiles are added to the end of the list so they accumulate in order,
+ with the main source subfile living at the front.
+ The main reason is so that the main source file symtab is at the head
+ of the list, and the rest appear in order for debugging convenience. */
+ struct symtab *last_filetab;
+
+ /* Non-NULL string that identifies the format of the debugging information,
+ such as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful
for automated testing of gdb but may also be information that is
useful to the user. */
-
const char *debugformat;
- /* String of producer version information. May be zero. */
-
+ /* String of producer version information, or NULL if we don't know. */
const char *producer;
- /* Full name of file as found by searching the source path.
- NULL if not yet known. */
+ /* Directory in which it was compiled, or NULL if we don't know. */
+ const char *dirname;
- char *fullname;
+ /* List of all symbol scope blocks for this symtab. It is shared among
+ all symtabs in a given compilation unit. */
+ const struct blockvector *blockvector;
- /* Object file from which this symbol information was read. */
+ /* Section in objfile->section_offsets for the blockvector and
+ the linetable. Probably always SECT_OFF_TEXT. */
+ int block_line_section;
- struct objfile *objfile;
+ /* Symtab has been compiled with both optimizations and debug info so that
+ GDB may stop skipping prologues as variables locations are valid already
+ at function entry points. */
+ unsigned int locations_valid : 1;
- /* struct call_site entries for this compilation unit or NULL. */
+ /* DWARF unwinder for this CU is valid even for epilogues (PC at the return
+ instruction). This is supported by GCC since 4.5.0. */
+ unsigned int epilogue_unwind_valid : 1;
+ /* struct call_site entries for this compilation unit or NULL. */
htab_t call_site_htab;
+ /* The macro table for this symtab. Like the blockvector, this
+ is shared between different symtabs in a given compilation unit.
+ It's debatable whether it *should* be shared among all the symtabs in
+ the given compilation unit, but it currently is. */
+ struct macro_table *macro_table;
+
/* If non-NULL, then this points to a NULL-terminated vector of
- included symbol tables. When searching the static or global
- block of this symbol table, the corresponding block of all
- included symbol tables will also be searched. Note that this
+ included compunits. When searching the static or global
+ block of this compunit, the corresponding block of all
+ included compunits will also be searched. Note that this
list must be flattened -- the symbol reader is responsible for
ensuring that this vector contains the transitive closure of all
- included symbol tables. */
-
- struct symtab **includes;
+ included compunits. */
+ struct compunit_symtab **includes;
- /* If this is an included symbol table, this points to one includer
- of the table. This user is considered the canonical symbol table
- containing this one. An included symbol table may itself be
+ /* If this is an included compunit, this points to one includer
+ of the table. This user is considered the canonical compunit
+ containing this one. An included compunit may itself be
included by another. */
-
- struct symtab *user;
+ struct compunit_symtab *user;
};
-#define BLOCKVECTOR(symtab) (symtab)->blockvector
-#define LINETABLE(symtab) (symtab)->linetable
-#define SYMTAB_PSPACE(symtab) (symtab)->objfile->pspace
+#define COMPUNIT_OBJFILE(cust) ((cust)->objfile)
+#define COMPUNIT_FILETABS(cust) ((cust)->filetabs)
+#define COMPUNIT_DEBUGFORMAT(cust) ((cust)->debugformat)
+#define COMPUNIT_PRODUCER(cust) ((cust)->producer)
+#define COMPUNIT_DIRNAME(cust) ((cust)->dirname)
+#define COMPUNIT_BLOCKVECTOR(cust) ((cust)->blockvector)
+#define COMPUNIT_BLOCK_LINE_SECTION(cust) ((cust)->block_line_section)
+#define COMPUNIT_LOCATIONS_VALID(cust) ((cust)->locations_valid)
+#define COMPUNIT_EPILOGUE_UNWIND_VALID(cust) ((cust)->epilogue_unwind_valid)
+#define COMPUNIT_CALL_SITE_HTAB(cust) ((cust)->call_site_htab)
+#define COMPUNIT_MACRO_TABLE(cust) ((cust)->macro_table)
-/* Call this to set the "primary" field in struct symtab. */
-extern void set_symtab_primary (struct symtab *, int primary);
+/* Iterate over all file tables (struct symtab) within a compunit. */
-typedef struct symtab *symtab_ptr;
-DEF_VEC_P (symtab_ptr);
+#define ALL_COMPUNIT_FILETABS(cu, s) \
+ for ((s) = (cu) -> filetabs; (s) != NULL; (s) = (s) -> next)
+
+/* Return the primary symtab of CUST. */
+
+extern struct symtab *
+ compunit_primary_filetab (const struct compunit_symtab *cust);
+
+/* Return the language of CUST. */
+
+extern enum language compunit_language (const struct compunit_symtab *cust);
+
+typedef struct compunit_symtab *compunit_symtab_ptr;
+DEF_VEC_P (compunit_symtab_ptr);
\f
struct field *field;
- /* If the symbol was found as an function field of 'this', then this
+ /* If the symbol was found as a function field of 'this', then this
is non-NULL and points to the particular field. */
struct fn_fieldlist *fn_field;
};
-/* lookup a symbol by name (optional block) in language. */
-
-extern struct symbol *lookup_symbol_in_language (const char *,
- const struct block *,
- const domain_enum,
- enum language,
- struct field_of_this_result *);
-
-/* lookup a symbol by name (optional block, optional symtab)
- in the current language. */
-
-extern struct symbol *lookup_symbol (const char *, const struct block *,
- const domain_enum,
- struct field_of_this_result *);
+/* Find the definition for a specified symbol name NAME
+ in domain DOMAIN in language LANGUAGE, visible from lexical block BLOCK
+ if non-NULL or from global/static blocks if BLOCK is NULL.
+ Returns the struct symbol pointer, or NULL if no symbol is found.
+ C++: if IS_A_FIELD_OF_THIS is non-NULL on entry, check to see if
+ NAME is a field of the current implied argument `this'. If so fill in the
+ fields of IS_A_FIELD_OF_THIS, otherwise the fields are set to NULL.
+ The symbol's section is fixed up if necessary. */
+
+extern struct block_symbol
+ lookup_symbol_in_language (const char *,
+ const struct block *,
+ const domain_enum,
+ enum language,
+ struct field_of_this_result *);
+
+/* Same as lookup_symbol_in_language, but using the current language. */
+
+extern struct block_symbol lookup_symbol (const char *,
+ const struct block *,
+ const domain_enum,
+ struct field_of_this_result *);
/* A default version of lookup_symbol_nonlocal for use by languages
- that can't think of anything better to do. */
+ that can't think of anything better to do.
+ This implements the C lookup rules. */
-extern struct symbol *basic_lookup_symbol_nonlocal (const char *,
- const struct block *,
- const domain_enum);
+extern struct block_symbol
+ basic_lookup_symbol_nonlocal (const struct language_defn *langdef,
+ const char *,
+ const struct block *,
+ const domain_enum);
/* Some helper functions for languages that need to write their own
lookup_symbol_nonlocal functions. */
/* Lookup a symbol in the static block associated to BLOCK, if there
- is one; do nothing if BLOCK is NULL or a global block. */
+ is one; do nothing if BLOCK is NULL or a global block.
+ Upon success fixes up the symbol's section if necessary. */
-extern struct symbol *lookup_symbol_static (const char *name,
- const struct block *block,
- const domain_enum domain);
+extern struct block_symbol
+ lookup_symbol_in_static_block (const char *name,
+ const struct block *block,
+ const domain_enum domain);
-/* Lookup a symbol in all files' global blocks (searching psymtabs if
- necessary). */
+/* Search all static file-level symbols for NAME from DOMAIN.
+ Upon success fixes up the symbol's section if necessary. */
-extern struct symbol *lookup_symbol_global (const char *name,
- const struct block *block,
- const domain_enum domain);
+extern struct block_symbol lookup_static_symbol (const char *name,
+ const domain_enum domain);
-/* Lookup a symbol within the block BLOCK. This, unlike
- lookup_symbol_block, will set SYMTAB and BLOCK_FOUND correctly, and
- will fix up the symbol if necessary. */
+/* Lookup a symbol in all files' global blocks.
-extern struct symbol *lookup_symbol_aux_block (const char *name,
- const struct block *block,
- const domain_enum domain);
+ If BLOCK is non-NULL then it is used for two things:
+ 1) If a target-specific lookup routine for libraries exists, then use the
+ routine for the objfile of BLOCK, and
+ 2) The objfile of BLOCK is used to assist in determining the search order
+ if the target requires it.
+ See gdbarch_iterate_over_objfiles_in_search_order.
-extern struct symbol *lookup_language_this (const struct language_defn *lang,
- const struct block *block);
+ Upon success fixes up the symbol's section if necessary. */
-/* Lookup a symbol only in the file static scope of all the objfiles. */
+extern struct block_symbol
+ lookup_global_symbol (const char *name,
+ const struct block *block,
+ const domain_enum domain);
-struct symbol *lookup_static_symbol_aux (const char *name,
- const domain_enum domain);
+/* Lookup a symbol in block BLOCK.
+ Upon success fixes up the symbol's section if necessary. */
+extern struct symbol *
+ lookup_symbol_in_block (const char *name,
+ const struct block *block,
+ const domain_enum domain);
-/* lookup a symbol by name, within a specified block. */
+/* Look up the `this' symbol for LANG in BLOCK. Return the symbol if
+ found, or NULL if not found. */
-extern struct symbol *lookup_block_symbol (const struct block *, const char *,
- const domain_enum);
+extern struct block_symbol
+ lookup_language_this (const struct language_defn *lang,
+ const struct block *block);
-/* lookup a [struct, union, enum] by name, within a specified block. */
+/* Lookup a [struct, union, enum] by name, within a specified block. */
extern struct type *lookup_struct (const char *, const struct block *);
extern void clear_pc_function_cache (void);
-/* lookup partial symbol table by address and section. */
+/* Expand symtab containing PC, SECTION if not already expanded. */
-extern struct symtab *find_pc_sect_symtab_via_partial (CORE_ADDR,
- struct obj_section *);
+extern void expand_symtab_containing_pc (CORE_ADDR, struct obj_section *);
/* lookup full symbol table by address. */
-extern struct symtab *find_pc_symtab (CORE_ADDR);
+extern struct compunit_symtab *find_pc_compunit_symtab (CORE_ADDR);
/* lookup full symbol table by address and section. */
-extern struct symtab *find_pc_sect_symtab (CORE_ADDR, struct obj_section *);
+extern struct compunit_symtab *
+ find_pc_sect_compunit_symtab (CORE_ADDR, struct obj_section *);
extern int find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *);
extern void reread_symbols (void);
+/* Look up a type named NAME in STRUCT_DOMAIN in the current language.
+ The type returned must not be opaque -- i.e., must have at least one field
+ defined. */
+
extern struct type *lookup_transparent_type (const char *);
-extern struct type *basic_lookup_transparent_type (const char *);
+extern struct type *basic_lookup_transparent_type (const char *);
/* Macro for name of symbol to indicate a file compiled with gcc. */
#ifndef GCC_COMPILED_FLAG_SYMBOL
/* The probe associated with this symtab_and_line. */
struct probe *probe;
+ /* If PROBE is not NULL, then this is the objfile in which the probe
+ originated. */
+ struct objfile *objfile;
};
extern void init_sal (struct symtab_and_line *sal);
extern struct symtab_and_line find_pc_sect_line (CORE_ADDR,
struct obj_section *, int);
+/* Wrapper around find_pc_line to just return the symtab. */
+
+extern struct symtab *find_pc_line_symtab (CORE_ADDR);
+
/* Given a symtab and line number, return the pc there. */
extern int find_line_pc (struct symtab *, int, CORE_ADDR *);
extern void resolve_sal_pc (struct symtab_and_line *);
-/* Symbol-reading stuff in symfile.c and solib.c. */
+/* solib.c */
extern void clear_solib (void);
/* Flags passed as 4th argument to print_source_lines. */
-enum print_source_lines_flags
+enum print_source_lines_flag
{
/* Do not print an error message. */
PRINT_SOURCE_LINES_NOERROR = (1 << 0),
/* Print the filename in front of the source lines. */
PRINT_SOURCE_LINES_FILENAME = (1 << 1)
};
+DEF_ENUM_FLAGS_TYPE (enum print_source_lines_flag, print_source_lines_flags);
extern void print_source_lines (struct symtab *, int, int,
- enum print_source_lines_flags);
+ print_source_lines_flags);
extern void forget_cached_source_info_for_objfile (struct objfile *);
extern void forget_cached_source_info (void);
extern void skip_prologue_sal (struct symtab_and_line *);
-/* symfile.c */
-
-extern void clear_symtab_users (int add_flags);
-
-extern enum language deduce_language_from_filename (const char *);
-
/* symtab.c */
-extern int in_prologue (struct gdbarch *gdbarch,
- CORE_ADDR pc, CORE_ADDR func_start);
-
extern CORE_ADDR skip_prologue_using_sal (struct gdbarch *gdbarch,
CORE_ADDR func_addr);
/* Information describing what was found.
- If symtab and symbol are NOT NULL, then information was found
- for this match. */
- struct symtab *symtab;
+ If symbol is NOT NULL, then information was found for this match. */
struct symbol *symbol;
/* If msymbol is non-null, then a match was made on something for
struct symbol_search *next;
};
-extern void search_symbols (char *, enum search_domain, int, char **,
- struct symbol_search **);
+extern void search_symbols (const char *, enum search_domain, int,
+ const char **, struct symbol_search **);
extern void free_search_symbols (struct symbol_search *);
extern struct cleanup *make_cleanup_free_search_symbols (struct symbol_search
**);
extern /*const */ char *main_name (void);
extern enum language main_language (void);
-/* Check global symbols in objfile. */
-struct symbol *lookup_global_symbol_from_objfile (const struct objfile *,
- const char *name,
- const domain_enum domain);
+/* Lookup symbol NAME from DOMAIN in MAIN_OBJFILE's global blocks.
+ This searches MAIN_OBJFILE as well as any associated separate debug info
+ objfiles of MAIN_OBJFILE.
+ Upon success fixes up the symbol's section if necessary. */
+
+extern struct block_symbol
+ lookup_global_symbol_from_objfile (struct objfile *main_objfile,
+ const char *name,
+ const domain_enum domain);
/* Return 1 if the supplied producer string matches the ARM RealView
compiler (armcc). */
void fixup_section (struct general_symbol_info *ginfo,
CORE_ADDR addr, struct objfile *objfile);
+/* Look up objfile containing BLOCK. */
+
struct objfile *lookup_objfile_from_block (const struct block *block);
extern unsigned int symtab_create_debug;
+extern unsigned int symbol_lookup_debug;
+
extern int basenames_may_differ;
int compare_filenames_for_search (const char *filename,
const char *search_name);
+int compare_glob_filenames_for_search (const char *filename,
+ const char *search_name);
+
int iterate_over_some_symtabs (const char *name,
const char *real_path,
int (*callback) (struct symtab *symtab,
void *data),
void *data,
- struct symtab *first,
- struct symtab *after_last);
+ struct compunit_symtab *first,
+ struct compunit_symtab *after_last);
void iterate_over_symtabs (const char *name,
int (*callback) (struct symtab *symtab,
void *data),
void *data);
-DEF_VEC_I (CORE_ADDR);
-
VEC (CORE_ADDR) *find_pcs_for_symtab_line (struct symtab *symtab, int line,
struct linetable_entry **best_entry);
struct symbol *allocate_symbol (struct objfile *);
-void initialize_symbol (struct symbol *);
+void initialize_objfile_symbol (struct symbol *);
struct template_symbol *allocate_template_symbol (struct objfile *);