| /* Symbol table definitions for GDB. |
| |
| Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software |
| Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #if !defined (SYMTAB_H) |
| #define SYMTAB_H 1 |
| |
| /* Opaque declarations. */ |
| struct ui_file; |
| struct frame_info; |
| struct symbol; |
| struct obstack; |
| struct objfile; |
| struct block; |
| struct blockvector; |
| struct axs_value; |
| struct agent_expr; |
| |
| /* Some of the structures in this file are space critical. |
| The space-critical structures are: |
| |
| struct general_symbol_info |
| struct symbol |
| struct partial_symbol |
| |
| These structures are layed out to encourage good packing. |
| They use ENUM_BITFIELD and short int fields, and they order the |
| structure members so that fields less than a word are next |
| to each other so they can be packed together. */ |
| |
| /* Rearranged: used ENUM_BITFIELD and rearranged field order in |
| all the space critical structures (plus struct minimal_symbol). |
| Memory usage dropped from 99360768 bytes to 90001408 bytes. |
| I measured this with before-and-after tests of |
| "HEAD-old-gdb -readnow HEAD-old-gdb" and |
| "HEAD-new-gdb -readnow HEAD-old-gdb" on native i686-pc-linux-gnu, |
| red hat linux 8, with LD_LIBRARY_PATH=/usr/lib/debug, |
| typing "maint space 1" at the first command prompt. |
| |
| Here is another measurement (from andrew c): |
| # no /usr/lib/debug, just plain glibc, like a normal user |
| gdb HEAD-old-gdb |
| (gdb) break internal_error |
| (gdb) run |
| (gdb) maint internal-error |
| (gdb) backtrace |
| (gdb) maint space 1 |
| |
| gdb gdb_6_0_branch 2003-08-19 space used: 8896512 |
| gdb HEAD 2003-08-19 space used: 8904704 |
| gdb HEAD 2003-08-21 space used: 8396800 (+symtab.h) |
| gdb HEAD 2003-08-21 space used: 8265728 (+gdbtypes.h) |
| |
| The third line shows the savings from the optimizations in symtab.h. |
| The fourth line shows the savings from the optimizations in |
| gdbtypes.h. Both optimizations are in gdb HEAD now. |
| |
| --chastain 2003-08-21 */ |
| |
| |
| |
| /* 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. */ |
| |
| /* This structure is space critical. See space comments at the top. */ |
| |
| struct general_symbol_info |
| { |
| /* Name of the symbol. This is a required field. Storage for the |
| name is allocated on the objfile_obstack for the associated |
| objfile. For languages like C++ that make a distinction between |
| the mangled name and demangled name, this is the mangled |
| name. */ |
| |
| char *name; |
| |
| /* Value of the symbol. Which member of this union to use, and what |
| it means, depends on what kind of symbol this is and its |
| SYMBOL_CLASS. See comments there for more details. All of these |
| are in host byte order (though what they point to might be in |
| target byte order, e.g. LOC_CONST_BYTES). */ |
| |
| union |
| { |
| /* 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; |
| |
| char *bytes; |
| |
| CORE_ADDR address; |
| |
| /* for opaque typedef struct chain */ |
| |
| struct symbol *chain; |
| } |
| value; |
| |
| /* Since one and only one language can apply, wrap the language specific |
| information inside a union. */ |
| |
| union |
| { |
| struct cplus_specific |
| { |
| /* This is in fact used for C++, Java, and Objective C. */ |
| char *demangled_name; |
| } |
| cplus_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_BITFIELD(language) language : 8; |
| |
| /* 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 (the ELF code |
| also tries to set it correctly). */ |
| |
| short section; |
| |
| /* The bfd section associated with this symbol. */ |
| |
| asection *bfd_section; |
| }; |
| |
| extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, asection *); |
| |
| /* Note that all the following SYMBOL_* macros are used with the |
| SYMBOL argument being either a partial symbol, a minimal symbol or |
| a full symbol. All three types have a ginfo field. In particular |
| the SYMBOL_INIT_LANGUAGE_SPECIFIC, SYMBOL_INIT_DEMANGLED_NAME, |
| SYMBOL_DEMANGLED_NAME macros cannot be entirely substituted by |
| functions, unless the callers are changed to pass in the ginfo |
| field only, instead of the SYMBOL parameter. */ |
| |
| #define DEPRECATED_SYMBOL_NAME(symbol) (symbol)->ginfo.name |
| #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 |
| |
| /* Initializes the language dependent portion of a symbol |
| depending upon the language for the symbol. */ |
| #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \ |
| (symbol_init_language_specific (&(symbol)->ginfo, (language))) |
| extern void symbol_init_language_specific (struct general_symbol_info *symbol, |
| enum language language); |
| |
| #define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \ |
| (symbol_init_demangled_name (&(symbol)->ginfo, (obstack))) |
| extern void symbol_init_demangled_name (struct general_symbol_info *symbol, |
| struct obstack *obstack); |
| |
| #define SYMBOL_SET_NAMES(symbol,linkage_name,len,objfile) \ |
| symbol_set_names (&(symbol)->ginfo, linkage_name, len, objfile) |
| extern void symbol_set_names (struct general_symbol_info *symbol, |
| const char *linkage_name, int len, |
| struct objfile *objfile); |
| |
| /* Now come lots of name accessor macros. Short version as to when to |
| use which: Use SYMBOL_NATURAL_NAME to refer to the name of the |
| symbol in the original source code. Use SYMBOL_LINKAGE_NAME if you |
| want to know what the linker thinks the symbol's name is. Use |
| SYMBOL_PRINT_NAME for output. Use SYMBOL_DEMANGLED_NAME if you |
| specifically need to know whether SYMBOL_NATURAL_NAME and |
| SYMBOL_LINKAGE_NAME are different. Don't use |
| DEPRECATED_SYMBOL_NAME at all: instances of that macro should be |
| replaced by SYMBOL_NATURAL_NAME, SYMBOL_LINKAGE_NAME, or perhaps |
| SYMBOL_PRINT_NAME. */ |
| |
| /* Return SYMBOL's "natural" name, i.e. the name that it was called in |
| the original source code. In languages like C++ where symbols may |
| be mangled for ease of manipulation by the linker, this is the |
| demangled name. */ |
| |
| #define SYMBOL_NATURAL_NAME(symbol) \ |
| (symbol_natural_name (&(symbol)->ginfo)) |
| extern char *symbol_natural_name (const struct general_symbol_info *symbol); |
| |
| /* Return SYMBOL's name from the point of view of the linker. In |
| languages like C++ where symbols may be mangled for ease of |
| manipulation by the linker, this is the mangled name; otherwise, |
| it's the same as SYMBOL_NATURAL_NAME. This is currently identical |
| to DEPRECATED_SYMBOL_NAME, but please use SYMBOL_LINKAGE_NAME when |
| appropriate: it conveys the additional semantic information that |
| you really have thought about the issue and decided that you mean |
| SYMBOL_LINKAGE_NAME instead of SYMBOL_NATURAL_NAME. */ |
| |
| #define SYMBOL_LINKAGE_NAME(symbol) (symbol)->ginfo.name |
| |
| /* Return the demangled name for a symbol based on the language for |
| that symbol. If no demangled name exists, return NULL. */ |
| #define SYMBOL_DEMANGLED_NAME(symbol) \ |
| (symbol_demangled_name (&(symbol)->ginfo)) |
| extern char *symbol_demangled_name (struct general_symbol_info *symbol); |
| |
| /* Macro that returns a version of the name of a symbol that is |
| suitable for output. In C++ this is the "demangled" form of the |
| name if demangle is on and the "mangled" form of the name if |
| demangle is off. In other languages this is just the symbol name. |
| The result should never be NULL. Don't use this for internal |
| purposes (e.g. storing in a hashtable): it's only suitable for |
| output. */ |
| |
| #define SYMBOL_PRINT_NAME(symbol) \ |
| (demangle ? SYMBOL_NATURAL_NAME (symbol) : SYMBOL_LINKAGE_NAME (symbol)) |
| |
| /* 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 |
| match a C++ encoded name, so that "foo::bar(int,long)" is the same as |
| "foo :: bar (int, long)". |
| Evaluates to zero if the match fails, or nonzero if it succeeds. */ |
| |
| /* Macro that tests a symbol for a match against a specified name |
| string. It tests against SYMBOL_NATURAL_NAME, and it ignores |
| whitespace and trailing parentheses. (See strcmp_iw for details |
| about its behavior.) */ |
| |
| #define SYMBOL_MATCHES_NATURAL_NAME(symbol, name) \ |
| (strcmp_iw (SYMBOL_NATURAL_NAME (symbol), (name)) == 0) |
| |
| /* 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, |
| 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. */ |
| #define SYMBOL_SEARCH_NAME(symbol) \ |
| (symbol_search_name (&(symbol)->ginfo)) |
| extern char *symbol_search_name (const struct general_symbol_info *); |
| |
| /* Analogous to SYMBOL_MATCHES_NATURAL_NAME, but uses the search |
| name. */ |
| #define SYMBOL_MATCHES_SEARCH_NAME(symbol, name) \ |
| (strcmp_iw (SYMBOL_SEARCH_NAME (symbol), (name)) == 0) |
| |
| /* Classification types for a minimal 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 which is a better match between two |
| types (mst_data versus mst_bss) for example. Since the minimal |
| symbol info is sometimes derived from the BFD library's view of a |
| file, we need to live with what information bfd supplies. */ |
| |
| enum minimal_symbol_type |
| { |
| mst_unknown = 0, /* Unknown type, the default */ |
| mst_text, /* Generally executable instructions */ |
| 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 */ |
| }; |
| |
| /* 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. |
| |
| In many cases, even if a file was compiled with no special options for |
| debugging at all, as long as was not stripped it will contain sufficient |
| information to build a useful minimal symbol table using this structure. |
| Even when a file contains enough debugging information to build a full |
| symbol table, these minimal symbols are still useful for quickly mapping |
| between names and addresses, and vice versa. They are also sometimes |
| used to figure out what full symbol table entries need to be read in. */ |
| |
| struct minimal_symbol |
| { |
| |
| /* The general symbol info required for all types of symbols. |
| |
| The SYMBOL_VALUE_ADDRESS contains the address that this symbol |
| corresponds to. */ |
| |
| struct general_symbol_info ginfo; |
| |
| /* The info field is available for caching machine-specific |
| information so it doesn't have to rederive the info constantly |
| (over a serial line). It is initialized to zero and stays that |
| way until target-dependent code sets it. Storage for any data |
| pointed to by this field should be allocated on the |
| objfile_obstack for the associated objfile. The type would be |
| "void *" except for reasons of compatibility with older |
| compilers. This field is optional. |
| |
| Currently, the AMD 29000 tdep.c uses it to remember things it has decoded |
| from the instructions in the function header, and the MIPS-16 code uses |
| it to identify 16-bit procedures. */ |
| |
| char *info; |
| |
| /* Size of this symbol. 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. */ |
| |
| unsigned long size; |
| |
| #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
| /* Which source file is this symbol in? Only relevant for mst_file_*. */ |
| char *filename; |
| #endif |
| |
| /* Classification type for this minimal symbol. */ |
| |
| ENUM_BITFIELD(minimal_symbol_type) type : 8; |
| |
| /* Minimal symbols with the same hash key are kept on a linked |
| list. This is the link. */ |
| |
| struct minimal_symbol *hash_next; |
| |
| /* Minimal symbols are stored in two different hash tables. This is |
| the `next' pointer for the demangled hash table. */ |
| |
| struct minimal_symbol *demangled_hash_next; |
| }; |
| |
| #define MSYMBOL_INFO(msymbol) (msymbol)->info |
| #define MSYMBOL_SIZE(msymbol) (msymbol)->size |
| #define MSYMBOL_TYPE(msymbol) (msymbol)->type |
| |
| |
| |
| /* Represent one symbol name; a variable, constant, function or typedef. */ |
| |
| /* Different name domains for symbols. Looking up a symbol specifies a |
| domain and ignores symbol definitions in other name domains. */ |
| |
| typedef enum domain_enum_tag |
| { |
| /* UNDEF_DOMAIN is used when a domain has not been discovered or |
| none of the following apply. This usually indicates an error either |
| in the symbol information or in gdb's handling of symbols. */ |
| |
| UNDEF_DOMAIN, |
| |
| /* VAR_DOMAIN is the usual domain. In C, this contains variables, |
| function names, typedef names and enum type values. */ |
| |
| VAR_DOMAIN, |
| |
| /* 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 location_funcs" 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; |
| |
| /* 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 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_BASEREG(symbol) (symbol)->aux_value.basereg |
| #define SYMBOL_OBJFILE(symbol) (symbol)->aux_value.objfile |
| #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_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. FIXME: Is this redundant |
| with the primary field? */ |
| |
| enum free_code |
| { |
| free_nothing, free_contents, 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 version information. May be zero. */ |
| |
| char *version; |
| |
| /* 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 */ |
| |
| /* lookup a symbol table by source file name */ |
| |
| extern struct symtab *lookup_symtab (const char *); |
| |
| /* lookup a symbol by name (optional block, optional symtab) */ |
| |
| extern struct symbol *lookup_symbol (const char *, const struct block *, |
| const domain_enum, int *, |
| struct symtab **); |
| |
| /* 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, |
| struct symtab **); |
| |
| /* 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, |
| struct symtab **symtab); |
| |
| /* 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 domain_enum domain, |
| struct symtab **symtab); |
| |
| /* 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, |
| struct symtab **symtab); |
| |
| /* 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 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 (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 (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; |
| }; |
| |
| 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 |
| }; |
| |
| /* Type for returning info about an exception */ |
| struct exception_event_record |
| { |
| enum exception_event_kind kind; |
| struct symtab_and_line throw_sal; |
| struct symtab_and_line catch_sal; |
| /* This may need to be extended in the future, if |
| some platforms allow reporting more information, |
| such as point of rethrow, type of exception object, |
| type expected by catch clause, etc. */ |
| }; |
| |
| #define CURRENT_EXCEPTION_KIND (current_exception_event->kind) |
| #define CURRENT_EXCEPTION_CATCH_SAL (current_exception_event->catch_sal) |
| #define CURRENT_EXCEPTION_CATCH_LINE (current_exception_event->catch_sal.line) |
| #define CURRENT_EXCEPTION_CATCH_FILE (current_exception_event->catch_sal.symtab->filename) |
| #define CURRENT_EXCEPTION_CATCH_PC (current_exception_event->catch_sal.pc) |
| #define CURRENT_EXCEPTION_THROW_SAL (current_exception_event->throw_sal) |
| #define CURRENT_EXCEPTION_THROW_LINE (current_exception_event->throw_sal.line) |
| #define CURRENT_EXCEPTION_THROW_FILE (current_exception_event->throw_sal.symtab->filename) |
| #define CURRENT_EXCEPTION_THROW_PC (current_exception_event->throw_sal.pc) |
| |
| |
| /* 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 **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 */ |
| |
| extern struct partial_symtab *find_main_psymtab (void); |
| |
| extern struct symtab *find_line_symtab (struct symtab *, int, int *, int *); |
| |
| 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); |
| |
| /* Global to indicate presence of HP-compiled objects, |
| in particular, SOM executable file with SOM debug info |
| Defined in symtab.c, used in hppa-tdep.c. */ |
| extern int deprecated_hp_som_som_object_present; |
| |
| #endif /* !defined(SYMTAB_H) */ |