/* Symbol table definitions for GDB.
- Copyright (C) 1986, 1989, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986, 1989, 1991, 1992, 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
This file is part of GDB.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#if !defined (SYMTAB_H)
#define SYMTAB_H 1
#include "obstack.h"
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
+#include "bcache.h"
+
+/* Don't do this; it means that if some .o's are compiled with GNU C
+ and some are not (easy to do accidentally the way we configure
+ things; also it is a pain to have to "make clean" every time you
+ want to switch compilers), then GDB dies a horrible death. */
+/* GNU C supports enums that are bitfields. Some compilers don't. */
+#if 0 && defined(__GNUC__) && !defined(BYTE_BITFIELD)
+#define BYTE_BITFIELD :8;
+#else
+#define BYTE_BITFIELD /*nothing*/
+#endif
/* 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
- be recorded along with each symbol. */
+ be recorded along with each symbol.
+
+ These fields are ordered to encourage good packing, since we frequently
+ have tens or hundreds of thousands of these. */
struct general_symbol_info
{
union
{
- long value;
+ /* The fact that this is a long not a LONGEST mainly limits the
+ range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not
+ sure that is a big deal. */
+ long ivalue;
struct block *block;
}
value;
- /* Record the source code language that applies to this symbol.
- This is used to select one of the fields from the language specific
- union below. */
-
- enum language language;
-
/* Since one and only one language can apply, wrap the language specific
information inside a union. */
union
{
- struct cplus_specific /* For C++ */
+ struct cplus_specific /* For C++ and Java */
{
char *demangled_name;
} cplus_specific;
} chill_specific;
} language_specific;
+ /* Record the source code language that applies to this symbol.
+ This is used to select one of the fields from the language specific
+ union above. */
+
+ enum language language BYTE_BITFIELD;
+
/* Which section is this symbol in? This is an index into
section_offsets for this objfile. Negative means that the symbol
does not get relocated relative to a section.
- Disclaimer: currently this is just used for xcoff, so don't expect
- all symbol-reading code to set it correctly. */
+ Disclaimer: currently this is just used for xcoff, so don't
+ expect all symbol-reading code to set it correctly (the ELF code
+ also tries to set it correctly). */
+
+ short section;
- int section;
+ /* The bfd section associated with this symbol. */
+
+ asection *bfd_section;
};
+extern CORE_ADDR symbol_overlayed_address PARAMS((CORE_ADDR, asection *));
+
#define SYMBOL_NAME(symbol) (symbol)->ginfo.name
-#define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.value
+#define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue
#define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address
#define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes
#define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block
#define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain
#define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language
#define SYMBOL_SECTION(symbol) (symbol)->ginfo.section
+#define SYMBOL_BFD_SECTION(symbol) (symbol)->ginfo.bfd_section
#define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \
(symbol)->ginfo.language_specific.cplus_specific.demangled_name
-
-extern int demangle; /* We reference it, so go ahead and declare it. */
-
/* Macro that initializes the language dependent portion of a symbol
depending upon the language for the symbol. */
#define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \
do { \
SYMBOL_LANGUAGE (symbol) = language; \
- if (SYMBOL_LANGUAGE (symbol) == language_cplus) \
+ if (SYMBOL_LANGUAGE (symbol) == language_cplus \
+ || SYMBOL_LANGUAGE (symbol) == language_java) \
{ \
SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
} \
SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
} \
} \
+ if (SYMBOL_LANGUAGE (symbol) == language_java) \
+ { \
+ demangled = \
+ cplus_demangle (SYMBOL_NAME (symbol), \
+ DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); \
+ if (demangled != NULL) \
+ { \
+ SYMBOL_LANGUAGE (symbol) = language_java; \
+ SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \
+ obsavestring (demangled, strlen (demangled), (obstack)); \
+ free (demangled); \
+ } \
+ else \
+ { \
+ SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
+ } \
+ } \
if (demangled == NULL \
&& (SYMBOL_LANGUAGE (symbol) == language_chill \
|| SYMBOL_LANGUAGE (symbol) == language_auto)) \
#define SYMBOL_DEMANGLED_NAME(symbol) \
(SYMBOL_LANGUAGE (symbol) == language_cplus \
+ || SYMBOL_LANGUAGE (symbol) == language_java \
? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \
: (SYMBOL_LANGUAGE (symbol) == language_chill \
? SYMBOL_CHILL_DEMANGLED_NAME (symbol) \
? SYMBOL_DEMANGLED_NAME (symbol) \
: SYMBOL_NAME (symbol))
-/* From utils.c. */
-extern int demangle;
-extern int asm_demangle;
-
/* Macro that tests a symbol for a match against a specified name string.
First test the unencoded name, then looks for and test a C++ encoded
name if it exists. Note that whitespace is ignored while attempting to
char *info;
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* Which source file is this symbol in? Only relevant for mst_file_*. */
+ char *filename;
+#endif
+
/* Classification types for this symbol. These should be taken as "advisory
only", since if gdb can't easily figure out a classification it simply
selects mst_unknown. It may also have to guess when it can't figure out
mst_data, /* Generally initialized data */
mst_bss, /* Generally uninitialized data */
mst_abs, /* Generally absolute (nonrelocatable) */
+ /* GDB uses mst_solib_trampoline for the start address of a shared
+ library trampoline entry. Breakpoints for shared library functions
+ are put there if the shared library is not yet loaded.
+ After the shared library is loaded, lookup_minimal_symbol will
+ prefer the minimal symbol from the shared library (usually
+ a mst_text symbol) over the mst_solib_trampoline symbol, and the
+ breakpoints will be moved to their true address in the shared
+ library via breakpoint_re_set. */
+ mst_solib_trampoline, /* Shared library trampoline code */
/* For the mst_file* types, the names are only guaranteed to be unique
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 */
- } type;
-
+ } type BYTE_BITFIELD;
};
#define MSYMBOL_INFO(msymbol) (msymbol)->info
/* Different name spaces for symbols. Looking up a symbol specifies a
namespace and ignores symbol definitions in other name spaces. */
-
-enum namespace
+
+typedef enum
{
/* UNDEF_NAMESPACE is used when a namespace has not been discovered or
none of the following apply. This usually indicates an error either
currently it is not used and labels are not recorded at all. */
LABEL_NAMESPACE
-};
+} namespace_enum;
/* An address-class says where to find the value of a symbol. */
LOC_BASEREG_ARG,
+ /* Value is at fixed address, but the address of the variable has
+ to be determined from the minimal symbol table whenever the
+ variable is referenced.
+ This happens if debugging information for a global symbol is
+ emitted and the corresponding minimal symbol is defined
+ in another object file or runtime common storage.
+ The linker might even remove the minimal symbol if the global
+ symbol is never referenced, in which case the symbol remains
+ unresolved. */
+
+ LOC_UNRESOLVED,
+
/* The variable does not actually exist in the program.
The value is ignored. */
LOC_OPTIMIZED_OUT
};
+/* Linked list of symbol's live ranges. */
+
+struct live_range
+{
+ CORE_ADDR start;
+ CORE_ADDR end;
+ struct live_range *next;
+};
+
struct symbol
{
struct general_symbol_info ginfo;
- /* Name space code. */
+ /* Data type of value */
- enum namespace namespace;
+ struct type *type;
- /* Address class */
+ /* Name space code. */
- enum address_class class;
+#ifdef __MFC4__
+ /* FIXME: don't conflict with C++'s namespace */
+ /* would be safer to do a global change for all namespace identifiers. */
+ #define namespace _namespace
+#endif
+ namespace_enum namespace BYTE_BITFIELD;
- /* Data type of value */
+ /* Address class */
- struct type *type;
+ enum address_class aclass BYTE_BITFIELD;
/* Line number of definition. FIXME: Should we really make the assumption
that nobody will try to debug files longer than 64K lines? What about
}
aux_value;
+ /* Live range information (if present) for debugging of optimized code.
+ Gcc extensions were added to stabs to encode live range information.
+ The syntax for referencing (defining) symbol aliases is "#n" ("#n=")
+ where n is a number. The syntax for specifying a range is "l(#<m>,#<n>)",
+ where m and n are numbers.
+ aliases - list of other symbols which are lexically the same symbol,
+ but were optimized into different storage classes (eg. for the
+ local symbol "x", one symbol contains range information where x
+ is on the stack, while an alias contains the live ranges where x
+ is in a register).
+ range - list of instruction ranges where the symbol is live. */
+ struct live_range_info
+ {
+ struct symbol *aliases; /* Link to other aliases for this symbol. */
+ struct live_range *range; /* Linked list of live ranges. */
+ } live;
};
#define SYMBOL_NAMESPACE(symbol) (symbol)->namespace
-#define SYMBOL_CLASS(symbol) (symbol)->class
+#define SYMBOL_CLASS(symbol) (symbol)->aclass
#define SYMBOL_TYPE(symbol) (symbol)->type
#define SYMBOL_LINE(symbol) (symbol)->line
#define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg
+#define SYMBOL_ALIASES(symbol) (symbol)->live.aliases
+#define SYMBOL_RANGE(symbol) (symbol)->live.range
+#define SYMBOL_RANGE_START(symbol) (symbol)->live.range->start
+#define SYMBOL_RANGE_END(symbol) (symbol)->live.range->end
+#define SYMBOL_RANGE_NEXT(symbol) (symbol)->live.range->next
\f
/* A partial_symbol records the name, namespace, and address class of
symbols whose types we have not parsed yet. For functions, it also
/* Name space code. */
- enum namespace namespace;
+ namespace_enum namespace BYTE_BITFIELD;
/* Address class (for info_symbols) */
- enum address_class class;
+ enum address_class aclass BYTE_BITFIELD;
};
#define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace
-#define PSYMBOL_CLASS(psymbol) (psymbol)->class
+#define PSYMBOL_CLASS(psymbol) (psymbol)->aclass
\f
/* Source-file information. This describes the relation between source files,
#define ANOFFSET(secoff, whichone) (secoff->offsets[whichone])
-/* Each source file is represented by a struct symtab.
+/* The maximum possible size of a section_offsets table. */
+
+#define SIZEOF_SECTION_OFFSETS \
+ (sizeof (struct section_offsets) \
+ + sizeof (((struct section_offsets *) 0)->offsets) * (SECT_OFF_MAX-1))
+
+
+/* Each source file or header is represented by a struct symtab.
These objects are chained through the `next' field. */
struct symtab
struct symtab *next;
- /* List of all symbol scope blocks for this symtab. */
+ /* 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). */
struct blockvector *blockvector;
/* Table mapping core addresses to line numbers for this file.
- Can be NULL if none. */
+ Can be NULL if none. Never shared between different symtabs. */
struct linetable *linetable;
/* Section in objfile->section_offsets for the blockvector and
- the linetable. */
+ the linetable. Probably always SECT_OFF_TEXT. */
int block_line_section;
free_contents => do a tree walk and free each object.
free_nothing => do nothing; some other symtab will free
the data this one uses.
- free_linetable => free just the linetable. */
+ free_linetable => free just the linetable. FIXME: Is this redundant
+ with the primary field? */
enum free_code
{
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
+ for automated testing of gdb but may also be information that is
+ useful to the user. */
+
+ char *debugformat;
+
/* String of version information. May be zero. */
char *version;
Note that this macro is g++ specific (FIXME). */
#define OPNAME_PREFIX_P(NAME) \
- ((NAME)[0] == 'o' && (NAME)[1] == 'p' && (NAME)[2] == CPLUS_MARKER)
+ ((NAME)[0] == 'o' && (NAME)[1] == 'p' && is_cplus_marker ((NAME)[2]))
/* Macro that yields non-zero value iff NAME is the prefix for C++ vtbl
- names. Note that this macro is g++ specific (FIXME). */
+ names. Note that this macro is g++ specific (FIXME).
+ '_vt$' is the old cfront-style vtables; '_VT$' is the new
+ style, using thunks (where '$' is really CPLUS_MARKER). */
#define VTBL_PREFIX_P(NAME) \
- ((NAME)[3] == CPLUS_MARKER && !strncmp ((NAME), "_vt", 3))
+ ((NAME)[0] == '_' \
+ && (((NAME)[1] == 'V' && (NAME)[2] == 'T') \
+ || ((NAME)[1] == 'v' && (NAME)[2] == 't')) \
+ && is_cplus_marker ((NAME)[3]))
/* Macro that yields non-zero value iff NAME is the prefix for C++ destructor
names. Note that this macro is g++ specific (FIXME). */
#define DESTRUCTOR_PREFIX_P(NAME) \
- ((NAME)[0] == '_' && (NAME)[1] == CPLUS_MARKER && (NAME)[2] == '_')
+ ((NAME)[0] == '_' && is_cplus_marker ((NAME)[1]) && (NAME)[2] == '_')
\f
/* External variables and functions for the objects described above. */
extern struct objfile *current_objfile;
+/* True if we are nested inside psymtab_to_symtab. */
+
+extern int currently_reading_symtab;
+
+/* From utils.c. */
+extern int demangle;
+extern int asm_demangle;
+
+/* symtab.c lookup functions */
+
+/* lookup a symbol table by source file name */
+
extern struct symtab *
lookup_symtab PARAMS ((char *));
+/* lookup a symbol by name (optional block, optional symtab) */
+
extern struct symbol *
lookup_symbol PARAMS ((const char *, const struct block *,
- const enum namespace, int *, struct symtab **));
+ const namespace_enum, int *, struct symtab **));
+/* lookup a symbol by name, within a specified block */
+
extern struct symbol *
lookup_block_symbol PARAMS ((const struct block *, const char *,
- const enum namespace));
+ const namespace_enum));
+
+/* lookup a [struct, union, enum] by name, within a specified block */
extern struct type *
lookup_struct PARAMS ((char *, struct block *));
extern struct type *
lookup_enum PARAMS ((char *, struct block *));
+/* lookup the function corresponding to the block */
+
extern struct symbol *
block_function PARAMS ((struct block *));
+/* from blockframe.c: */
+
+/* lookup the function symbol corresponding to the address */
+
extern struct symbol *
find_pc_function PARAMS ((CORE_ADDR));
-extern int find_pc_partial_function
- PARAMS ((CORE_ADDR, char **, CORE_ADDR *, CORE_ADDR *));
+/* lookup the function corresponding to the address and section */
+
+extern struct symbol *
+find_pc_sect_function PARAMS ((CORE_ADDR, asection *));
+
+/* lookup function from address, return name, start addr and end addr */
+
+extern int find_pc_partial_function PARAMS ((CORE_ADDR, char **,
+ CORE_ADDR *, CORE_ADDR *));
extern void
clear_pc_function_cache PARAMS ((void));
+/* from symtab.c: */
+
+/* lookup partial symbol table by filename */
+
extern struct partial_symtab *
lookup_partial_symtab PARAMS ((char *));
+/* lookup partial symbol table by address */
+
extern struct partial_symtab *
find_pc_psymtab PARAMS ((CORE_ADDR));
+/* lookup partial symbol table by address and section */
+
+extern struct partial_symtab *
+find_pc_sect_psymtab PARAMS ((CORE_ADDR, asection *));
+
+/* lookup full symbol table by address */
+
extern struct symtab *
find_pc_symtab PARAMS ((CORE_ADDR));
+/* lookup full symbol table by address and section */
+
+extern struct symtab *
+find_pc_sect_symtab PARAMS ((CORE_ADDR, asection *));
+
+/* lookup partial symbol by address */
+
extern struct partial_symbol *
find_pc_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR));
+/* lookup partial symbol by address and section */
+
+extern struct partial_symbol *
+find_pc_sect_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR, asection *));
+
extern int
find_pc_line_pc_range PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *));
extern void
reread_symbols PARAMS ((void));
+/* Macro for name of symbol to indicate a file compiled with gcc. */
+#ifndef GCC_COMPILED_FLAG_SYMBOL
+#define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled."
+#endif
+
+/* Macro for name of symbol to indicate a file compiled with gcc2. */
+#ifndef GCC2_COMPILED_FLAG_SYMBOL
+#define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled."
+#endif
+
/* Functions for dealing with the minimal symbol table, really a misc
address<->symbol mapping for things we don't have debug symbols for. */
-extern void
-prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR,
- enum minimal_symbol_type));
+extern void prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR,
+ enum minimal_symbol_type,
+ struct objfile *));
+
+extern struct minimal_symbol *prim_record_minimal_symbol_and_info
+ PARAMS ((const char *, CORE_ADDR,
+ enum minimal_symbol_type,
+ char *info, int section,
+ asection *bfd_section,
+ struct objfile *));
+
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+extern CORE_ADDR find_stab_function_addr PARAMS ((char *,
+ struct partial_symtab *,
+ struct objfile *));
+#endif
-extern void
-prim_record_minimal_symbol_and_info PARAMS ((const char *, CORE_ADDR,
- enum minimal_symbol_type,
- char *info, int section));
+extern struct minimal_symbol *
+lookup_minimal_symbol PARAMS ((const char *, const char *, struct objfile *));
extern struct minimal_symbol *
-lookup_minimal_symbol PARAMS ((const char *, struct objfile *));
+lookup_minimal_symbol_text PARAMS ((const char *, const char *, struct objfile *));
+
+struct minimal_symbol *
+lookup_minimal_symbol_solib_trampoline PARAMS ((const char *,
+ const char *,
+ struct objfile *));
extern struct minimal_symbol *
lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR));
-extern struct minimal_symbol *lookup_next_minimal_symbol PARAMS ((CORE_ADDR));
+extern struct minimal_symbol *
+lookup_minimal_symbol_by_pc_section PARAMS ((CORE_ADDR, asection *));
+
+extern struct minimal_symbol *
+lookup_solib_trampoline_symbol_by_pc PARAMS ((CORE_ADDR));
+
+extern CORE_ADDR
+find_solib_trampoline_target PARAMS ((CORE_ADDR));
extern void
init_minimal_symbol_collection PARAMS ((void));
extern void
install_minimal_symbols PARAMS ((struct objfile *));
+/* Sort all the minimal symbols in OBJFILE. */
+
+extern void msymbols_sort PARAMS ((struct objfile *objfile));
+
struct symtab_and_line
{
struct symtab *symtab;
-
+ asection *section;
/* Line number. Line numbers start at 1 and proceed through symtab->nlines.
0 is never a valid line number; it is used to indicate that line number
information is not available. */
CORE_ADDR end;
};
+#define INIT_SAL(sal) { \
+ (sal)->symtab = 0; \
+ (sal)->section = 0; \
+ (sal)->line = 0; \
+ (sal)->pc = 0; \
+ (sal)->end = 0; \
+}
+
struct symtabs_and_lines
{
struct symtab_and_line *sals;
extern struct symtab_and_line
find_pc_line PARAMS ((CORE_ADDR, int));
+/* Same function, but specify a section as well as an address */
+
+extern struct symtab_and_line
+find_pc_sect_line PARAMS ((CORE_ADDR, asection *, int));
+
+/* Given an address, return the nearest symbol at or below it in memory.
+ Optionally return the symtab it's from through 2nd arg, and the
+ address in inferior memory of the symbol through 3rd arg. */
+
+extern struct symbol *
+find_addr_symbol PARAMS ((CORE_ADDR, struct symtab **, CORE_ADDR *));
+
/* Given a symtab and line number, return the pc there. */
extern CORE_ADDR
find_line_pc PARAMS ((struct symtab *, int));
extern int
-find_line_pc_range PARAMS ((struct symtab *, int, CORE_ADDR *, CORE_ADDR *));
+find_line_pc_range PARAMS ((struct symtab_and_line,
+ CORE_ADDR *, CORE_ADDR *));
extern void
resolve_sal_pc PARAMS ((struct symtab_and_line *));
extern struct symtabs_and_lines
decode_line_1 PARAMS ((char **, int, struct symtab *, int, char ***));
-/* Symmisc.c */
-
#if MAINTENANCE_CMDS
+/* Symmisc.c */
+
void
maintenance_print_symbols PARAMS ((char *, int));
void
maintenance_print_objfiles PARAMS ((char *, int));
+void
+maintenance_check_symtabs PARAMS ((char *, int));
+
+/* maint.c */
+
+void
+maintenance_print_statistics PARAMS ((char *, int));
+
#endif
extern void
/* source.c */
-extern int frame_file_full_name; /* in stack.c */
-
extern int
identify_source_line PARAMS ((struct symtab *, int, int, CORE_ADDR));
extern struct blockvector *
blockvector_for_pc PARAMS ((CORE_ADDR, int *));
+
+extern struct blockvector *
+blockvector_for_pc_sect PARAMS ((CORE_ADDR, asection *, int *,
+ struct symtab *));
/* symfile.c */
extern void
extern enum language
deduce_language_from_filename PARAMS ((char *));
+/* symtab.c */
+
+extern int
+in_prologue PARAMS ((CORE_ADDR pc, CORE_ADDR func_start));
+
+extern struct symbol *
+fixup_symbol_section PARAMS ((struct symbol *, struct objfile *));
+
#endif /* !defined(SYMTAB_H) */
projects / deliverable / binutils-gdb.git / blobdiff