1394 lines
46 KiB
C
1394 lines
46 KiB
C
/* Symbol table definitions for GDB.
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Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
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1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
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||
|
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This program is distributed in the hope that it will be useful,
|
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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.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#if !defined (SYMTAB_H)
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#define SYMTAB_H 1
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/* Opaque declarations. */
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struct ui_file;
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struct frame_info;
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struct symbol;
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struct obstack;
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struct objfile;
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struct block;
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struct blockvector;
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struct axs_value;
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struct agent_expr;
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/* Some of the structures in this file are space critical.
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The space-critical structures are:
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struct general_symbol_info
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struct symbol
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struct partial_symbol
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These structures are laid out to encourage good packing.
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They use ENUM_BITFIELD and short int fields, and they order the
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structure members so that fields less than a word are next
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to each other so they can be packed together. */
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/* Rearranged: used ENUM_BITFIELD and rearranged field order in
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all the space critical structures (plus struct minimal_symbol).
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Memory usage dropped from 99360768 bytes to 90001408 bytes.
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I measured this with before-and-after tests of
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"HEAD-old-gdb -readnow HEAD-old-gdb" and
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"HEAD-new-gdb -readnow HEAD-old-gdb" on native i686-pc-linux-gnu,
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red hat linux 8, with LD_LIBRARY_PATH=/usr/lib/debug,
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typing "maint space 1" at the first command prompt.
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Here is another measurement (from andrew c):
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# no /usr/lib/debug, just plain glibc, like a normal user
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gdb HEAD-old-gdb
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(gdb) break internal_error
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(gdb) run
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(gdb) maint internal-error
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(gdb) backtrace
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(gdb) maint space 1
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gdb gdb_6_0_branch 2003-08-19 space used: 8896512
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gdb HEAD 2003-08-19 space used: 8904704
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gdb HEAD 2003-08-21 space used: 8396800 (+symtab.h)
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gdb HEAD 2003-08-21 space used: 8265728 (+gdbtypes.h)
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The third line shows the savings from the optimizations in symtab.h.
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The fourth line shows the savings from the optimizations in
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gdbtypes.h. Both optimizations are in gdb HEAD now.
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--chastain 2003-08-21 */
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/* Define a structure for the information that is common to all symbol types,
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including minimal symbols, partial symbols, and full symbols. In a
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multilanguage environment, some language specific information may need to
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be recorded along with each symbol. */
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/* This structure is space critical. See space comments at the top. */
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struct general_symbol_info
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{
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/* Name of the symbol. This is a required field. Storage for the
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name is allocated on the objfile_obstack for the associated
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objfile. For languages like C++ that make a distinction between
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the mangled name and demangled name, this is the mangled
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name. */
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char *name;
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/* Value of the symbol. Which member of this union to use, and what
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it means, depends on what kind of symbol this is and its
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SYMBOL_CLASS. See comments there for more details. All of these
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are in host byte order (though what they point to might be in
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target byte order, e.g. LOC_CONST_BYTES). */
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union
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{
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/* The fact that this is a long not a LONGEST mainly limits the
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range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not
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sure that is a big deal. */
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long ivalue;
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struct block *block;
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gdb_byte *bytes;
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CORE_ADDR address;
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/* for opaque typedef struct chain */
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struct symbol *chain;
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}
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value;
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/* Since one and only one language can apply, wrap the language specific
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information inside a union. */
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union
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{
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struct cplus_specific
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{
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/* This is in fact used for C++, Java, and Objective C. */
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char *demangled_name;
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}
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cplus_specific;
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}
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language_specific;
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/* Record the source code language that applies to this symbol.
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This is used to select one of the fields from the language specific
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union above. */
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ENUM_BITFIELD(language) language : 8;
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/* Which section is this symbol in? This is an index into
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section_offsets for this objfile. Negative means that the symbol
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does not get relocated relative to a section.
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Disclaimer: currently this is just used for xcoff, so don't
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expect all symbol-reading code to set it correctly (the ELF code
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also tries to set it correctly). */
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short section;
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/* The bfd section associated with this symbol. */
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asection *bfd_section;
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};
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extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, asection *);
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/* Note that all the following SYMBOL_* macros are used with the
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SYMBOL argument being either a partial symbol, a minimal symbol or
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a full symbol. All three types have a ginfo field. In particular
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the SYMBOL_INIT_LANGUAGE_SPECIFIC, SYMBOL_DEMANGLED_NAME, etc.
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macros cannot be entirely substituted by
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functions, unless the callers are changed to pass in the ginfo
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field only, instead of the SYMBOL parameter. */
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#define DEPRECATED_SYMBOL_NAME(symbol) (symbol)->ginfo.name
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#define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue
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#define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address
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#define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes
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#define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block
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#define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain
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#define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language
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#define SYMBOL_SECTION(symbol) (symbol)->ginfo.section
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#define SYMBOL_BFD_SECTION(symbol) (symbol)->ginfo.bfd_section
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#define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \
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(symbol)->ginfo.language_specific.cplus_specific.demangled_name
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/* Initializes the language dependent portion of a symbol
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depending upon the language for the symbol. */
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#define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \
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(symbol_init_language_specific (&(symbol)->ginfo, (language)))
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extern void symbol_init_language_specific (struct general_symbol_info *symbol,
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enum language language);
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#define SYMBOL_SET_NAMES(symbol,linkage_name,len,objfile) \
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symbol_set_names (&(symbol)->ginfo, linkage_name, len, objfile)
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extern void symbol_set_names (struct general_symbol_info *symbol,
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const char *linkage_name, int len,
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struct objfile *objfile);
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/* Now come lots of name accessor macros. Short version as to when to
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use which: Use SYMBOL_NATURAL_NAME to refer to the name of the
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symbol in the original source code. Use SYMBOL_LINKAGE_NAME if you
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want to know what the linker thinks the symbol's name is. Use
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SYMBOL_PRINT_NAME for output. Use SYMBOL_DEMANGLED_NAME if you
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specifically need to know whether SYMBOL_NATURAL_NAME and
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SYMBOL_LINKAGE_NAME are different. Don't use
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DEPRECATED_SYMBOL_NAME at all: instances of that macro should be
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replaced by SYMBOL_NATURAL_NAME, SYMBOL_LINKAGE_NAME, or perhaps
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SYMBOL_PRINT_NAME. */
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/* Return SYMBOL's "natural" name, i.e. the name that it was called in
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the original source code. In languages like C++ where symbols may
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be mangled for ease of manipulation by the linker, this is the
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demangled name. */
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#define SYMBOL_NATURAL_NAME(symbol) \
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(symbol_natural_name (&(symbol)->ginfo))
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extern char *symbol_natural_name (const struct general_symbol_info *symbol);
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/* Return SYMBOL's name from the point of view of the linker. In
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languages like C++ where symbols may be mangled for ease of
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manipulation by the linker, this is the mangled name; otherwise,
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it's the same as SYMBOL_NATURAL_NAME. This is currently identical
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to DEPRECATED_SYMBOL_NAME, but please use SYMBOL_LINKAGE_NAME when
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appropriate: it conveys the additional semantic information that
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you really have thought about the issue and decided that you mean
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SYMBOL_LINKAGE_NAME instead of SYMBOL_NATURAL_NAME. */
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#define SYMBOL_LINKAGE_NAME(symbol) (symbol)->ginfo.name
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/* Return the demangled name for a symbol based on the language for
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that symbol. If no demangled name exists, return NULL. */
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#define SYMBOL_DEMANGLED_NAME(symbol) \
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(symbol_demangled_name (&(symbol)->ginfo))
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extern char *symbol_demangled_name (struct general_symbol_info *symbol);
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/* Macro that returns a version of the name of a symbol that is
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suitable for output. In C++ this is the "demangled" form of the
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name if demangle is on and the "mangled" form of the name if
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demangle is off. In other languages this is just the symbol name.
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The result should never be NULL. Don't use this for internal
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purposes (e.g. storing in a hashtable): it's only suitable for
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output. */
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#define SYMBOL_PRINT_NAME(symbol) \
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(demangle ? SYMBOL_NATURAL_NAME (symbol) : SYMBOL_LINKAGE_NAME (symbol))
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/* Macro that tests a symbol for a match against a specified name string.
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First test the unencoded name, then looks for and test a C++ encoded
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name if it exists. Note that whitespace is ignored while attempting to
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match a C++ encoded name, so that "foo::bar(int,long)" is the same as
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"foo :: bar (int, long)".
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Evaluates to zero if the match fails, or nonzero if it succeeds. */
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/* Macro that tests a symbol for a match against a specified name
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string. It tests against SYMBOL_NATURAL_NAME, and it ignores
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whitespace and trailing parentheses. (See strcmp_iw for details
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about its behavior.) */
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#define SYMBOL_MATCHES_NATURAL_NAME(symbol, name) \
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(strcmp_iw (SYMBOL_NATURAL_NAME (symbol), (name)) == 0)
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/* Macro that returns the name to be used when sorting and searching symbols.
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In C++, Chill, and Java, we search for the demangled form of a name,
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and so sort symbols accordingly. In Ada, however, we search by mangled
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name. If there is no distinct demangled name, then SYMBOL_SEARCH_NAME
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returns the same value (same pointer) as SYMBOL_LINKAGE_NAME. */
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#define SYMBOL_SEARCH_NAME(symbol) \
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(symbol_search_name (&(symbol)->ginfo))
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extern char *symbol_search_name (const struct general_symbol_info *);
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/* Analogous to SYMBOL_MATCHES_NATURAL_NAME, but uses the search
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name. */
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#define SYMBOL_MATCHES_SEARCH_NAME(symbol, name) \
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(strcmp_iw (SYMBOL_SEARCH_NAME (symbol), (name)) == 0)
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/* Classification types for a minimal symbol. These should be taken as
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"advisory only", since if gdb can't easily figure out a
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classification it simply selects mst_unknown. It may also have to
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guess when it can't figure out which is a better match between two
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types (mst_data versus mst_bss) for example. Since the minimal
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symbol info is sometimes derived from the BFD library's view of a
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file, we need to live with what information bfd supplies. */
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enum minimal_symbol_type
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{
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mst_unknown = 0, /* Unknown type, the default */
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mst_text, /* Generally executable instructions */
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mst_data, /* Generally initialized data */
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mst_bss, /* Generally uninitialized data */
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mst_abs, /* Generally absolute (nonrelocatable) */
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/* GDB uses mst_solib_trampoline for the start address of a shared
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library trampoline entry. Breakpoints for shared library functions
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are put there if the shared library is not yet loaded.
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After the shared library is loaded, lookup_minimal_symbol will
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prefer the minimal symbol from the shared library (usually
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a mst_text symbol) over the mst_solib_trampoline symbol, and the
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breakpoints will be moved to their true address in the shared
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library via breakpoint_re_set. */
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mst_solib_trampoline, /* Shared library trampoline code */
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/* For the mst_file* types, the names are only guaranteed to be unique
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within a given .o file. */
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mst_file_text, /* Static version of mst_text */
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mst_file_data, /* Static version of mst_data */
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mst_file_bss /* Static version of mst_bss */
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};
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/* Define a simple structure used to hold some very basic information about
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all defined global symbols (text, data, bss, abs, etc). The only required
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information is the general_symbol_info.
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In many cases, even if a file was compiled with no special options for
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debugging at all, as long as was not stripped it will contain sufficient
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information to build a useful minimal symbol table using this structure.
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Even when a file contains enough debugging information to build a full
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symbol table, these minimal symbols are still useful for quickly mapping
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between names and addresses, and vice versa. They are also sometimes
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used to figure out what full symbol table entries need to be read in. */
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struct minimal_symbol
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{
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/* The general symbol info required for all types of symbols.
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The SYMBOL_VALUE_ADDRESS contains the address that this symbol
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corresponds to. */
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struct general_symbol_info ginfo;
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/* The info field is available for caching machine-specific
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information so it doesn't have to rederive the info constantly
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(over a serial line). It is initialized to zero and stays that
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way until target-dependent code sets it. Storage for any data
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pointed to by this field should be allocated on the
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objfile_obstack for the associated objfile. The type would be
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"void *" except for reasons of compatibility with older
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compilers. This field is optional.
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Currently, the AMD 29000 tdep.c uses it to remember things it has decoded
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from the instructions in the function header, and the MIPS-16 code uses
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it to identify 16-bit procedures. */
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char *info;
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/* Size of this symbol. end_psymtab in dbxread.c uses this
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information to calculate the end of the partial symtab based on the
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address of the last symbol plus the size of the last symbol. */
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unsigned long size;
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/* Which source file is this symbol in? Only relevant for mst_file_*. */
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char *filename;
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/* Classification type for this minimal symbol. */
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ENUM_BITFIELD(minimal_symbol_type) type : 8;
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/* Minimal symbols with the same hash key are kept on a linked
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list. This is the link. */
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struct minimal_symbol *hash_next;
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/* Minimal symbols are stored in two different hash tables. This is
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the `next' pointer for the demangled hash table. */
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struct minimal_symbol *demangled_hash_next;
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};
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#define MSYMBOL_INFO(msymbol) (msymbol)->info
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#define MSYMBOL_SIZE(msymbol) (msymbol)->size
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#define MSYMBOL_TYPE(msymbol) (msymbol)->type
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/* Represent one symbol name; a variable, constant, function or typedef. */
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/* Different name domains for symbols. Looking up a symbol specifies a
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domain and ignores symbol definitions in other name domains. */
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typedef enum domain_enum_tag
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{
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/* UNDEF_DOMAIN is used when a domain has not been discovered or
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||
none of the following apply. This usually indicates an error either
|
||
in the symbol information or in gdb's handling of symbols. */
|
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UNDEF_DOMAIN,
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||
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/* VAR_DOMAIN is the usual domain. In C, this contains variables,
|
||
function names, typedef names and enum type values. */
|
||
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VAR_DOMAIN,
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||
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||
/* STRUCT_DOMAIN is used in C to hold struct, union and enum type names.
|
||
Thus, if `struct foo' is used in a C program, it produces a symbol named
|
||
`foo' in the STRUCT_DOMAIN. */
|
||
|
||
STRUCT_DOMAIN,
|
||
|
||
/* LABEL_DOMAIN may be used for names of labels (for gotos);
|
||
currently it is not used and labels are not recorded at all. */
|
||
|
||
LABEL_DOMAIN,
|
||
|
||
/* Searching domains. These overlap with VAR_DOMAIN, providing
|
||
some granularity with the search_symbols function. */
|
||
|
||
/* Everything in VAR_DOMAIN minus FUNCTIONS_-, TYPES_-, and
|
||
METHODS_DOMAIN */
|
||
VARIABLES_DOMAIN,
|
||
|
||
/* All functions -- for some reason not methods, though. */
|
||
FUNCTIONS_DOMAIN,
|
||
|
||
/* All defined types */
|
||
TYPES_DOMAIN,
|
||
|
||
/* All class methods -- why is this separated out? */
|
||
METHODS_DOMAIN
|
||
}
|
||
domain_enum;
|
||
|
||
/* An address-class says where to find the value of a symbol. */
|
||
|
||
enum address_class
|
||
{
|
||
/* Not used; catches errors */
|
||
|
||
LOC_UNDEF,
|
||
|
||
/* Value is constant int SYMBOL_VALUE, host byteorder */
|
||
|
||
LOC_CONST,
|
||
|
||
/* Value is at fixed address SYMBOL_VALUE_ADDRESS */
|
||
|
||
LOC_STATIC,
|
||
|
||
/* Value is in register. SYMBOL_VALUE is the register number. */
|
||
|
||
LOC_REGISTER,
|
||
|
||
/* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */
|
||
|
||
LOC_ARG,
|
||
|
||
/* Value address is at SYMBOL_VALUE offset in arglist. */
|
||
|
||
LOC_REF_ARG,
|
||
|
||
/* Value is in register number SYMBOL_VALUE. Just like LOC_REGISTER
|
||
except this is an argument. Probably the cleaner way to handle
|
||
this would be to separate address_class (which would include
|
||
separate ARG and LOCAL to deal with the frame's arguments
|
||
(get_frame_args_address) versus the frame's locals
|
||
(get_frame_locals_address), and an is_argument flag.
|
||
|
||
For some symbol formats (stabs, for some compilers at least),
|
||
the compiler generates two symbols, an argument and a register.
|
||
In some cases we combine them to a single LOC_REGPARM in symbol
|
||
reading, but currently not for all cases (e.g. it's passed on the
|
||
stack and then loaded into a register). */
|
||
|
||
LOC_REGPARM,
|
||
|
||
/* Value is in specified register. Just like LOC_REGPARM except the
|
||
register holds the address of the argument instead of the argument
|
||
itself. This is currently used for the passing of structs and unions
|
||
on sparc and hppa. It is also used for call by reference where the
|
||
address is in a register, at least by mipsread.c. */
|
||
|
||
LOC_REGPARM_ADDR,
|
||
|
||
/* Value is a local variable at SYMBOL_VALUE offset in stack frame. */
|
||
|
||
LOC_LOCAL,
|
||
|
||
/* Value not used; definition in SYMBOL_TYPE. Symbols in the domain
|
||
STRUCT_DOMAIN all have this class. */
|
||
|
||
LOC_TYPEDEF,
|
||
|
||
/* Value is address SYMBOL_VALUE_ADDRESS in the code */
|
||
|
||
LOC_LABEL,
|
||
|
||
/* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'.
|
||
In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address
|
||
of the block. Function names have this class. */
|
||
|
||
LOC_BLOCK,
|
||
|
||
/* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in
|
||
target byte order. */
|
||
|
||
LOC_CONST_BYTES,
|
||
|
||
/* Value is arg at SYMBOL_VALUE offset in stack frame. Differs from
|
||
LOC_LOCAL in that symbol is an argument; differs from LOC_ARG in
|
||
that we find it in the frame (get_frame_locals_address), not in
|
||
the arglist (get_frame_args_address). Added for i960, which
|
||
passes args in regs then copies to frame. */
|
||
|
||
LOC_LOCAL_ARG,
|
||
|
||
/* Value is at SYMBOL_VALUE offset from the current value of
|
||
register number SYMBOL_BASEREG. This exists mainly for the same
|
||
things that LOC_LOCAL and LOC_ARG do; but we need to do this
|
||
instead because on 88k DWARF gives us the offset from the
|
||
frame/stack pointer, rather than the offset from the "canonical
|
||
frame address" used by COFF, stabs, etc., and we don't know how
|
||
to convert between these until we start examining prologues.
|
||
|
||
Note that LOC_BASEREG is much less general than a DWARF expression.
|
||
We don't need the generality (at least not yet), and storing a general
|
||
DWARF expression would presumably take up more space than the existing
|
||
scheme. */
|
||
|
||
LOC_BASEREG,
|
||
|
||
/* Same as LOC_BASEREG but it is an argument. */
|
||
|
||
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,
|
||
|
||
/* Value is at a thread-specific location calculated by a
|
||
target-specific method. This is used only by hppa. */
|
||
|
||
LOC_HP_THREAD_LOCAL_STATIC,
|
||
|
||
/* The variable does not actually exist in the program.
|
||
The value is ignored. */
|
||
|
||
LOC_OPTIMIZED_OUT,
|
||
|
||
/* The variable is static, but actually lives at * (address).
|
||
* I.e. do an extra indirection to get to it.
|
||
* This is used on HP-UX to get at globals that are allocated
|
||
* in shared libraries, where references from images other
|
||
* than the one where the global was allocated are done
|
||
* with a level of indirection.
|
||
*/
|
||
|
||
LOC_INDIRECT,
|
||
|
||
/* The variable's address is computed by a set of location
|
||
functions (see "struct symbol_ops" below). */
|
||
LOC_COMPUTED,
|
||
|
||
/* Same as LOC_COMPUTED, but for function arguments. */
|
||
LOC_COMPUTED_ARG
|
||
};
|
||
|
||
/* The methods needed to implement a symbol class. These methods can
|
||
use the symbol's .aux_value for additional per-symbol information.
|
||
|
||
At present this is only used to implement location expressions. */
|
||
|
||
struct symbol_ops
|
||
{
|
||
|
||
/* Return the value of the variable SYMBOL, relative to the stack
|
||
frame FRAME. If the variable has been optimized out, return
|
||
zero.
|
||
|
||
Iff `read_needs_frame (SYMBOL)' is zero, then FRAME may be zero. */
|
||
|
||
struct value *(*read_variable) (struct symbol * symbol,
|
||
struct frame_info * frame);
|
||
|
||
/* Return non-zero if we need a frame to find the value of the SYMBOL. */
|
||
int (*read_needs_frame) (struct symbol * symbol);
|
||
|
||
/* Write to STREAM a natural-language description of the location of
|
||
SYMBOL. */
|
||
int (*describe_location) (struct symbol * symbol, struct ui_file * stream);
|
||
|
||
/* Tracepoint support. Append bytecodes to the tracepoint agent
|
||
expression AX that push the address of the object SYMBOL. Set
|
||
VALUE appropriately. Note --- for objects in registers, this
|
||
needn't emit any code; as long as it sets VALUE properly, then
|
||
the caller will generate the right code in the process of
|
||
treating this as an lvalue or rvalue. */
|
||
|
||
void (*tracepoint_var_ref) (struct symbol * symbol, struct agent_expr * ax,
|
||
struct axs_value * value);
|
||
};
|
||
|
||
/* This structure is space critical. See space comments at the top. */
|
||
|
||
struct symbol
|
||
{
|
||
|
||
/* The general symbol info required for all types of symbols. */
|
||
|
||
struct general_symbol_info ginfo;
|
||
|
||
/* Data type of value */
|
||
|
||
struct type *type;
|
||
|
||
/* The symbol table containing this symbol. This is the file
|
||
associated with LINE. */
|
||
struct symtab *symtab;
|
||
|
||
/* Domain code. */
|
||
|
||
ENUM_BITFIELD(domain_enum_tag) domain : 6;
|
||
|
||
/* Address class */
|
||
/* NOTE: cagney/2003-11-02: The fields "aclass" and "ops" contain
|
||
overlapping information. By creating a per-aclass ops vector, or
|
||
using the aclass as an index into an ops table, the aclass and
|
||
ops fields can be merged. The latter, for instance, would shave
|
||
32-bits from each symbol (relative to a symbol lookup, any table
|
||
index overhead would be in the noise). */
|
||
|
||
ENUM_BITFIELD(address_class) aclass : 6;
|
||
|
||
/* Line number of definition. FIXME: Should we really make the assumption
|
||
that nobody will try to debug files longer than 64K lines? What about
|
||
machine generated programs? */
|
||
|
||
unsigned short line;
|
||
|
||
/* Method's for symbol's of this class. */
|
||
/* NOTE: cagney/2003-11-02: See comment above attached to "aclass". */
|
||
|
||
const struct symbol_ops *ops;
|
||
|
||
/* Some symbols require additional information to be recorded on a
|
||
per-symbol basis. Stash those values here. */
|
||
|
||
union
|
||
{
|
||
/* Used by LOC_BASEREG and LOC_BASEREG_ARG. */
|
||
short basereg;
|
||
/* An arbitrary data pointer. Note that this data must be
|
||
allocated using the same obstack as the symbol itself. */
|
||
/* So far it is only used by LOC_COMPUTED and LOC_COMPUTED_ARG 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
|
||
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,
|
||
or to have a generic debug info annotation slot for symbols. */
|
||
void *ptr;
|
||
}
|
||
aux_value;
|
||
|
||
struct symbol *hash_next;
|
||
};
|
||
|
||
|
||
#define SYMBOL_DOMAIN(symbol) (symbol)->domain
|
||
#define SYMBOL_CLASS(symbol) (symbol)->aclass
|
||
#define SYMBOL_TYPE(symbol) (symbol)->type
|
||
#define SYMBOL_LINE(symbol) (symbol)->line
|
||
#define SYMBOL_SYMTAB(symbol) (symbol)->symtab
|
||
#define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg
|
||
#define SYMBOL_OPS(symbol) (symbol)->ops
|
||
#define SYMBOL_LOCATION_BATON(symbol) (symbol)->aux_value.ptr
|
||
|
||
/* A partial_symbol records the name, domain, and address class of
|
||
symbols whose types we have not parsed yet. For functions, it also
|
||
contains their memory address, so we can find them from a PC value.
|
||
Each partial_symbol sits in a partial_symtab, all of which are chained
|
||
on a partial symtab list and which points to the corresponding
|
||
normal symtab once the partial_symtab has been referenced. */
|
||
|
||
/* This structure is space critical. See space comments at the top. */
|
||
|
||
struct partial_symbol
|
||
{
|
||
|
||
/* The general symbol info required for all types of symbols. */
|
||
|
||
struct general_symbol_info ginfo;
|
||
|
||
/* Name space code. */
|
||
|
||
ENUM_BITFIELD(domain_enum_tag) domain : 6;
|
||
|
||
/* Address class (for info_symbols) */
|
||
|
||
ENUM_BITFIELD(address_class) aclass : 6;
|
||
|
||
};
|
||
|
||
#define PSYMBOL_DOMAIN(psymbol) (psymbol)->domain
|
||
#define PSYMBOL_CLASS(psymbol) (psymbol)->aclass
|
||
|
||
|
||
/* Each item represents a line-->pc (or the reverse) mapping. This is
|
||
somewhat more wasteful of space than one might wish, but since only
|
||
the files which are actually debugged are read in to core, we don't
|
||
waste much space. */
|
||
|
||
struct linetable_entry
|
||
{
|
||
int line;
|
||
CORE_ADDR pc;
|
||
};
|
||
|
||
/* The order of entries in the linetable is significant. They should
|
||
be sorted by increasing values of the pc field. If there is more than
|
||
one entry for a given pc, then I'm not sure what should happen (and
|
||
I not sure whether we currently handle it the best way).
|
||
|
||
Example: a C for statement generally looks like this
|
||
|
||
10 0x100 - for the init/test part of a for stmt.
|
||
20 0x200
|
||
30 0x300
|
||
10 0x400 - for the increment part of a for stmt.
|
||
|
||
If an entry has a line number of zero, it marks the start of a PC
|
||
range for which no line number information is available. It is
|
||
acceptable, though wasteful of table space, for such a range to be
|
||
zero length. */
|
||
|
||
struct linetable
|
||
{
|
||
int nitems;
|
||
|
||
/* Actually NITEMS elements. If you don't like this use of the
|
||
`struct hack', you can shove it up your ANSI (seriously, if the
|
||
committee tells us how to do it, we can probably go along). */
|
||
struct linetable_entry item[1];
|
||
};
|
||
|
||
/* How to relocate the symbols from each section in a symbol file.
|
||
Each struct contains an array of offsets.
|
||
The ordering and meaning of the offsets is file-type-dependent;
|
||
typically it is indexed by section numbers or symbol types or
|
||
something like that.
|
||
|
||
To give us flexibility in changing the internal representation
|
||
of these offsets, the ANOFFSET macro must be used to insert and
|
||
extract offset values in the struct. */
|
||
|
||
struct section_offsets
|
||
{
|
||
CORE_ADDR offsets[1]; /* As many as needed. */
|
||
};
|
||
|
||
#define ANOFFSET(secoff, whichone) \
|
||
((whichone == -1) \
|
||
? (internal_error (__FILE__, __LINE__, _("Section index is uninitialized")), -1) \
|
||
: secoff->offsets[whichone])
|
||
|
||
/* The size of a section_offsets table for N sections. */
|
||
#define SIZEOF_N_SECTION_OFFSETS(n) \
|
||
(sizeof (struct section_offsets) \
|
||
+ sizeof (((struct section_offsets *) 0)->offsets) * ((n)-1))
|
||
|
||
/* Each source file or header is represented by a struct symtab.
|
||
These objects are chained through the `next' field. */
|
||
|
||
struct symtab
|
||
{
|
||
|
||
/* Chain of all existing symtabs. */
|
||
|
||
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). */
|
||
|
||
struct blockvector *blockvector;
|
||
|
||
/* 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. */
|
||
|
||
int primary;
|
||
|
||
/* 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. */
|
||
|
||
char *filename;
|
||
|
||
/* Directory in which it was compiled, or NULL if we don't know. */
|
||
|
||
char *dirname;
|
||
|
||
/* This component says how to free the data we point to:
|
||
free_nothing => do nothing; some other symtab will free
|
||
the data this one uses.
|
||
free_linetable => free just the linetable. FIXME: Is this redundant
|
||
with the primary field? */
|
||
|
||
enum free_code
|
||
{
|
||
free_nothing, free_linetable
|
||
}
|
||
free_code;
|
||
|
||
/* A function to call to free space, if necessary. This is IN
|
||
ADDITION to the action indicated by free_code. */
|
||
|
||
void (*free_func)(struct symtab *symtab);
|
||
|
||
/* Total number of lines found in source file. */
|
||
|
||
int nlines;
|
||
|
||
/* line_charpos[N] is the position of the (N-1)th line of the
|
||
source file. "position" means something we can lseek() to; it
|
||
is not guaranteed to be useful any other way. */
|
||
|
||
int *line_charpos;
|
||
|
||
/* Language of this source file. */
|
||
|
||
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 producer version information. May be zero. */
|
||
|
||
char *producer;
|
||
|
||
/* Full name of file as found by searching the source path.
|
||
NULL if not yet known. */
|
||
|
||
char *fullname;
|
||
|
||
/* Object file from which this symbol information was read. */
|
||
|
||
struct objfile *objfile;
|
||
|
||
};
|
||
|
||
#define BLOCKVECTOR(symtab) (symtab)->blockvector
|
||
#define LINETABLE(symtab) (symtab)->linetable
|
||
|
||
|
||
/* Each source file that has not been fully read in is represented by
|
||
a partial_symtab. This contains the information on where in the
|
||
executable the debugging symbols for a specific file are, and a
|
||
list of names of global symbols which are located in this file.
|
||
They are all chained on partial symtab lists.
|
||
|
||
Even after the source file has been read into a symtab, the
|
||
partial_symtab remains around. They are allocated on an obstack,
|
||
objfile_obstack. FIXME, this is bad for dynamic linking or VxWorks-
|
||
style execution of a bunch of .o's. */
|
||
|
||
struct partial_symtab
|
||
{
|
||
|
||
/* Chain of all existing partial symtabs. */
|
||
|
||
struct partial_symtab *next;
|
||
|
||
/* Name of the source file which this partial_symtab defines */
|
||
|
||
char *filename;
|
||
|
||
/* Full path of the source file. NULL if not known. */
|
||
|
||
char *fullname;
|
||
|
||
/* Directory in which it was compiled, or NULL if we don't know. */
|
||
|
||
char *dirname;
|
||
|
||
/* Information about the object file from which symbols should be read. */
|
||
|
||
struct objfile *objfile;
|
||
|
||
/* Set of relocation offsets to apply to each section. */
|
||
|
||
struct section_offsets *section_offsets;
|
||
|
||
/* Range of text addresses covered by this file; texthigh is the
|
||
beginning of the next section. */
|
||
|
||
CORE_ADDR textlow;
|
||
CORE_ADDR texthigh;
|
||
|
||
/* Array of pointers to all of the partial_symtab's which this one
|
||
depends on. Since this array can only be set to previous or
|
||
the current (?) psymtab, this dependency tree is guaranteed not
|
||
to have any loops. "depends on" means that symbols must be read
|
||
for the dependencies before being read for this psymtab; this is
|
||
for type references in stabs, where if foo.c includes foo.h, declarations
|
||
in foo.h may use type numbers defined in foo.c. For other debugging
|
||
formats there may be no need to use dependencies. */
|
||
|
||
struct partial_symtab **dependencies;
|
||
|
||
int number_of_dependencies;
|
||
|
||
/* Global symbol list. This list will be sorted after readin to
|
||
improve access. Binary search will be the usual method of
|
||
finding a symbol within it. globals_offset is an integer offset
|
||
within global_psymbols[]. */
|
||
|
||
int globals_offset;
|
||
int n_global_syms;
|
||
|
||
/* Static symbol list. This list will *not* be sorted after readin;
|
||
to find a symbol in it, exhaustive search must be used. This is
|
||
reasonable because searches through this list will eventually
|
||
lead to either the read in of a files symbols for real (assumed
|
||
to take a *lot* of time; check) or an error (and we don't care
|
||
how long errors take). This is an offset and size within
|
||
static_psymbols[]. */
|
||
|
||
int statics_offset;
|
||
int n_static_syms;
|
||
|
||
/* Pointer to symtab eventually allocated for this source file, 0 if
|
||
!readin or if we haven't looked for the symtab after it was readin. */
|
||
|
||
struct symtab *symtab;
|
||
|
||
/* Pointer to function which will read in the symtab corresponding to
|
||
this psymtab. */
|
||
|
||
void (*read_symtab) (struct partial_symtab *);
|
||
|
||
/* Information that lets read_symtab() locate the part of the symbol table
|
||
that this psymtab corresponds to. This information is private to the
|
||
format-dependent symbol reading routines. For further detail examine
|
||
the various symbol reading modules. Should really be (void *) but is
|
||
(char *) as with other such gdb variables. (FIXME) */
|
||
|
||
char *read_symtab_private;
|
||
|
||
/* Non-zero if the symtab corresponding to this psymtab has been readin */
|
||
|
||
unsigned char readin;
|
||
};
|
||
|
||
/* A fast way to get from a psymtab to its symtab (after the first time). */
|
||
#define PSYMTAB_TO_SYMTAB(pst) \
|
||
((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst))
|
||
|
||
|
||
/* The virtual function table is now an array of structures which have the
|
||
form { int16 offset, delta; void *pfn; }.
|
||
|
||
In normal virtual function tables, OFFSET is unused.
|
||
DELTA is the amount which is added to the apparent object's base
|
||
address in order to point to the actual object to which the
|
||
virtual function should be applied.
|
||
PFN is a pointer to the virtual function.
|
||
|
||
Note that this macro is g++ specific (FIXME). */
|
||
|
||
#define VTBL_FNADDR_OFFSET 2
|
||
|
||
/* External variables and functions for the objects described above. */
|
||
|
||
/* See the comment in symfile.c about how current_objfile is used. */
|
||
|
||
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 */
|
||
|
||
extern const char multiple_symbols_ask[];
|
||
extern const char multiple_symbols_all[];
|
||
extern const char multiple_symbols_cancel[];
|
||
|
||
const char *multiple_symbols_select_mode (void);
|
||
|
||
int symbol_matches_domain (enum language symbol_language,
|
||
domain_enum symbol_domain,
|
||
domain_enum domain);
|
||
|
||
/* lookup a symbol table by source file name */
|
||
|
||
extern struct symtab *lookup_symtab (const char *);
|
||
|
||
/* 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,
|
||
int *);
|
||
|
||
/* 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, int *);
|
||
|
||
/* A default version of lookup_symbol_nonlocal for use by languages
|
||
that can't think of anything better to do. */
|
||
|
||
extern struct symbol *basic_lookup_symbol_nonlocal (const char *,
|
||
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. */
|
||
|
||
extern struct symbol *lookup_symbol_static (const char *name,
|
||
const char *linkage_name,
|
||
const struct block *block,
|
||
const domain_enum domain);
|
||
|
||
/* Lookup a symbol in all files' global blocks (searching psymtabs if
|
||
necessary). */
|
||
|
||
extern struct symbol *lookup_symbol_global (const char *name,
|
||
const char *linkage_name,
|
||
const struct block *block,
|
||
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. */
|
||
|
||
extern struct symbol *lookup_symbol_aux_block (const char *name,
|
||
const char *linkage_name,
|
||
const struct block *block,
|
||
const domain_enum domain);
|
||
|
||
/* Lookup a partial symbol. */
|
||
|
||
extern struct partial_symbol *lookup_partial_symbol (struct partial_symtab *,
|
||
const char *,
|
||
const char *, int,
|
||
domain_enum);
|
||
|
||
/* lookup a symbol by name, within a specified block */
|
||
|
||
extern struct symbol *lookup_block_symbol (const struct block *, const char *,
|
||
const char *,
|
||
const domain_enum);
|
||
|
||
/* lookup a [struct, union, enum] by name, within a specified block */
|
||
|
||
extern struct type *lookup_struct (char *, struct block *);
|
||
|
||
extern struct type *lookup_union (char *, struct block *);
|
||
|
||
extern struct type *lookup_enum (char *, struct block *);
|
||
|
||
/* from blockframe.c: */
|
||
|
||
/* lookup the function symbol corresponding to the address */
|
||
|
||
extern struct symbol *find_pc_function (CORE_ADDR);
|
||
|
||
/* lookup the function corresponding to the address and section */
|
||
|
||
extern struct symbol *find_pc_sect_function (CORE_ADDR, asection *);
|
||
|
||
/* lookup function from address, return name, start addr and end addr */
|
||
|
||
extern int find_pc_partial_function (CORE_ADDR, char **, CORE_ADDR *,
|
||
CORE_ADDR *);
|
||
|
||
extern void clear_pc_function_cache (void);
|
||
|
||
/* from symtab.c: */
|
||
|
||
/* lookup partial symbol table by filename */
|
||
|
||
extern struct partial_symtab *lookup_partial_symtab (const char *);
|
||
|
||
/* lookup partial symbol table by address */
|
||
|
||
extern struct partial_symtab *find_pc_psymtab (CORE_ADDR);
|
||
|
||
/* lookup partial symbol table by address and section */
|
||
|
||
extern struct partial_symtab *find_pc_sect_psymtab (CORE_ADDR, asection *);
|
||
|
||
/* lookup full symbol table by address */
|
||
|
||
extern struct symtab *find_pc_symtab (CORE_ADDR);
|
||
|
||
/* lookup full symbol table by address and section */
|
||
|
||
extern struct symtab *find_pc_sect_symtab (CORE_ADDR, asection *);
|
||
|
||
/* lookup partial symbol by address */
|
||
|
||
extern struct partial_symbol *find_pc_psymbol (struct partial_symtab *,
|
||
CORE_ADDR);
|
||
|
||
/* lookup partial symbol by address and section */
|
||
|
||
extern struct partial_symbol *find_pc_sect_psymbol (struct partial_symtab *,
|
||
CORE_ADDR, asection *);
|
||
|
||
extern int find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *);
|
||
|
||
extern void reread_symbols (void);
|
||
|
||
extern struct type *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
|
||
#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 (const char *, CORE_ADDR,
|
||
enum minimal_symbol_type,
|
||
struct objfile *);
|
||
|
||
extern struct minimal_symbol *prim_record_minimal_symbol_and_info
|
||
(const char *, CORE_ADDR,
|
||
enum minimal_symbol_type,
|
||
char *info, int section, asection * bfd_section, struct objfile *);
|
||
|
||
extern unsigned int msymbol_hash_iw (const char *);
|
||
|
||
extern unsigned int msymbol_hash (const char *);
|
||
|
||
extern struct objfile * msymbol_objfile (struct minimal_symbol *sym);
|
||
|
||
extern void
|
||
add_minsym_to_hash_table (struct minimal_symbol *sym,
|
||
struct minimal_symbol **table);
|
||
|
||
extern struct minimal_symbol *lookup_minimal_symbol (const char *,
|
||
const char *,
|
||
struct objfile *);
|
||
|
||
extern struct minimal_symbol *lookup_minimal_symbol_text (const char *,
|
||
struct objfile *);
|
||
|
||
struct minimal_symbol *lookup_minimal_symbol_solib_trampoline (const char *,
|
||
struct objfile
|
||
*);
|
||
|
||
extern struct minimal_symbol *lookup_minimal_symbol_by_pc_name
|
||
(CORE_ADDR, const char *, struct objfile *);
|
||
|
||
extern struct minimal_symbol *lookup_minimal_symbol_by_pc (CORE_ADDR);
|
||
|
||
extern struct minimal_symbol *lookup_minimal_symbol_by_pc_section (CORE_ADDR,
|
||
asection
|
||
*);
|
||
|
||
extern struct minimal_symbol
|
||
*lookup_solib_trampoline_symbol_by_pc (CORE_ADDR);
|
||
|
||
extern CORE_ADDR find_solib_trampoline_target (struct frame_info *, CORE_ADDR);
|
||
|
||
extern void init_minimal_symbol_collection (void);
|
||
|
||
extern struct cleanup *make_cleanup_discard_minimal_symbols (void);
|
||
|
||
extern void install_minimal_symbols (struct objfile *);
|
||
|
||
/* Sort all the minimal symbols in OBJFILE. */
|
||
|
||
extern void msymbols_sort (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. */
|
||
int line;
|
||
|
||
CORE_ADDR pc;
|
||
CORE_ADDR end;
|
||
int explicit_pc;
|
||
int explicit_line;
|
||
};
|
||
|
||
extern void init_sal (struct symtab_and_line *sal);
|
||
|
||
struct symtabs_and_lines
|
||
{
|
||
struct symtab_and_line *sals;
|
||
int nelts;
|
||
};
|
||
|
||
|
||
|
||
/* Some types and macros needed for exception catchpoints.
|
||
Can't put these in target.h because symtab_and_line isn't
|
||
known there. This file will be included by breakpoint.c,
|
||
hppa-tdep.c, etc. */
|
||
|
||
/* Enums for exception-handling support */
|
||
enum exception_event_kind
|
||
{
|
||
EX_EVENT_THROW,
|
||
EX_EVENT_CATCH
|
||
};
|
||
|
||
|
||
|
||
/* Given a pc value, return line number it is in. Second arg nonzero means
|
||
if pc is on the boundary use the previous statement's line number. */
|
||
|
||
extern struct symtab_and_line find_pc_line (CORE_ADDR, int);
|
||
|
||
/* Same function, but specify a section as well as an address */
|
||
|
||
extern struct symtab_and_line find_pc_sect_line (CORE_ADDR, asection *, int);
|
||
|
||
/* Given a symtab and line number, return the pc there. */
|
||
|
||
extern int find_line_pc (struct symtab *, int, CORE_ADDR *);
|
||
|
||
extern int find_line_pc_range (struct symtab_and_line, CORE_ADDR *,
|
||
CORE_ADDR *);
|
||
|
||
extern void resolve_sal_pc (struct symtab_and_line *);
|
||
|
||
/* Given a string, return the line specified by it. For commands like "list"
|
||
and "breakpoint". */
|
||
|
||
extern struct symtabs_and_lines decode_line_spec (char *, int);
|
||
|
||
extern struct symtabs_and_lines decode_line_spec_1 (char *, int);
|
||
|
||
/* Symmisc.c */
|
||
|
||
void maintenance_print_symbols (char *, int);
|
||
|
||
void maintenance_print_psymbols (char *, int);
|
||
|
||
void maintenance_print_msymbols (char *, int);
|
||
|
||
void maintenance_print_objfiles (char *, int);
|
||
|
||
void maintenance_info_symtabs (char *, int);
|
||
|
||
void maintenance_info_psymtabs (char *, int);
|
||
|
||
void maintenance_check_symtabs (char *, int);
|
||
|
||
/* maint.c */
|
||
|
||
void maintenance_print_statistics (char *, int);
|
||
|
||
extern void free_symtab (struct symtab *);
|
||
|
||
/* Symbol-reading stuff in symfile.c and solib.c. */
|
||
|
||
extern struct symtab *psymtab_to_symtab (struct partial_symtab *);
|
||
|
||
extern void clear_solib (void);
|
||
|
||
/* source.c */
|
||
|
||
extern int identify_source_line (struct symtab *, int, int, CORE_ADDR);
|
||
|
||
extern void print_source_lines (struct symtab *, int, int, int);
|
||
|
||
extern void forget_cached_source_info (void);
|
||
|
||
extern void select_source_symtab (struct symtab *);
|
||
|
||
extern char **default_make_symbol_completion_list (char *, char *);
|
||
extern char **make_symbol_completion_list (char *, char *);
|
||
|
||
extern char **make_file_symbol_completion_list (char *, char *, char *);
|
||
|
||
extern char **make_source_files_completion_list (char *, char *);
|
||
|
||
/* symtab.c */
|
||
|
||
int matching_bfd_sections (asection *, asection *);
|
||
|
||
extern struct partial_symtab *find_main_psymtab (void);
|
||
|
||
extern struct symtab *find_line_symtab (struct symtab *, int, int *, int *);
|
||
|
||
extern CORE_ADDR find_function_start_pc (struct gdbarch *,
|
||
CORE_ADDR, asection *);
|
||
|
||
extern struct symtab_and_line find_function_start_sal (struct symbol *sym,
|
||
int);
|
||
|
||
/* symfile.c */
|
||
|
||
extern void clear_symtab_users (void);
|
||
|
||
extern enum language deduce_language_from_filename (char *);
|
||
|
||
/* symtab.c */
|
||
|
||
extern int in_prologue (CORE_ADDR pc, CORE_ADDR func_start);
|
||
|
||
extern CORE_ADDR skip_prologue_using_sal (CORE_ADDR func_addr);
|
||
|
||
extern struct symbol *fixup_symbol_section (struct symbol *,
|
||
struct objfile *);
|
||
|
||
extern struct partial_symbol *fixup_psymbol_section (struct partial_symbol
|
||
*psym,
|
||
struct objfile *objfile);
|
||
|
||
/* Symbol searching */
|
||
|
||
/* When using search_symbols, a list of the following structs is returned.
|
||
Callers must free the search list using free_search_symbols! */
|
||
struct symbol_search
|
||
{
|
||
/* The block in which the match was found. Could be, for example,
|
||
STATIC_BLOCK or GLOBAL_BLOCK. */
|
||
int block;
|
||
|
||
/* Information describing what was found.
|
||
|
||
If symtab abd symbol are NOT NULL, then information was found
|
||
for this match. */
|
||
struct symtab *symtab;
|
||
struct symbol *symbol;
|
||
|
||
/* If msymbol is non-null, then a match was made on something for
|
||
which only minimal_symbols exist. */
|
||
struct minimal_symbol *msymbol;
|
||
|
||
/* A link to the next match, or NULL for the end. */
|
||
struct symbol_search *next;
|
||
};
|
||
|
||
extern void search_symbols (char *, domain_enum, int, char **,
|
||
struct symbol_search **);
|
||
extern void free_search_symbols (struct symbol_search *);
|
||
extern struct cleanup *make_cleanup_free_search_symbols (struct symbol_search
|
||
*);
|
||
|
||
/* The name of the ``main'' function.
|
||
FIXME: cagney/2001-03-20: Can't make main_name() const since some
|
||
of the calling code currently assumes that the string isn't
|
||
const. */
|
||
extern void set_main_name (const char *name);
|
||
extern /*const */ char *main_name (void);
|
||
|
||
/* Check global symbols in objfile. */
|
||
struct symbol *lookup_global_symbol_from_objfile (const struct objfile *objfile,
|
||
const char *name,
|
||
const char *linkage_name,
|
||
const domain_enum domain);
|
||
|
||
extern struct symtabs_and_lines
|
||
expand_line_sal (struct symtab_and_line sal);
|
||
|
||
#endif /* !defined(SYMTAB_H) */
|