X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fbuildsym.h;h=f559b4b04b5284a535194010b8c882c77372671f;hb=3c83b96e241336be0c3e26c06f2bf901d0fe8edd;hp=8183cfc1c31c8534e190ce54f65fd21ef155318b;hpb=ea1549b346e7014425e5ce74943ca3e2f81097e2;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/buildsym.h b/gdb/buildsym.h index 8183cfc1c3..f559b4b04b 100644 --- a/gdb/buildsym.h +++ b/gdb/buildsym.h @@ -1,71 +1,79 @@ /* Build symbol tables in GDB's internal format. - Copyright (C) 1986-1991 Free Software Foundation, Inc. + Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1995, 1996, + 1997, 1998, 1999, 2000, 2002, 2003, 2007, 2008, 2009, 2010 + Free Software Foundation, Inc. -This file is part of GDB. + 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 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 3 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. + 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ #if !defined (BUILDSYM_H) #define BUILDSYM_H 1 +struct objfile; +struct symbol; +struct addrmap; + /* This module provides definitions used for creating and adding to the symbol table. These routines are called from various symbol- - file-reading routines. + file-reading routines. They originated in dbxread.c of gdb-4.2, and were split out to make xcoffread.c more maintainable by sharing code. - Variables declared in this file can be defined by #define-ing - the name EXTERN to null. It is used to declare variables that - are normally extern, but which get defined in a single module - using this technique. */ + Variables declared in this file can be defined by #define-ing the + name EXTERN to null. It is used to declare variables that are + normally extern, but which get defined in a single module using + this technique. */ + +struct block; #ifndef EXTERN -#define EXTERN extern +#define EXTERN extern #endif -/* Convert stab register number (from `r' declaration) to a gdb REGNUM. */ +#define HASHSIZE 127 /* Size of things hashed via + hashname() */ -#ifndef STAB_REG_TO_REGNUM -#define STAB_REG_TO_REGNUM(VALUE) (VALUE) -#endif - -/* Name of source file whose symbol data we are now processing. - This comes from a symbol of type N_SO. */ +/* Name of source file whose symbol data we are now processing. This + comes from a symbol of type N_SO for stabs. For Dwarf it comes from the + DW_AT_name attribute of a DW_TAG_compile_unit DIE. */ EXTERN char *last_source_file; -/* Core address of start of text of current source file. - This too comes from the N_SO symbol. */ +/* Core address of start of text of current source file. This too + comes from the N_SO symbol. For Dwarf it typically comes from the + DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */ EXTERN CORE_ADDR last_source_start_addr; -/* The list of sub-source-files within the current individual compilation. - Each file gets its own symtab with its own linetable and associated info, - but they all share one blockvector. */ +/* The list of sub-source-files within the current individual + compilation. Each file gets its own symtab with its own linetable + and associated info, but they all share one blockvector. */ struct subfile -{ - struct subfile *next; - char *name; - char *dirname; - struct linetable *line_vector; - int line_vector_length; -}; - -EXTERN struct subfile *subfiles; + { + struct subfile *next; + char *name; + char *dirname; + struct linetable *line_vector; + int line_vector_length; + enum language language; + char *producer; + char *debugformat; + struct symtab *symtab; + }; EXTERN struct subfile *current_subfile; @@ -74,103 +82,107 @@ EXTERN struct subfile *current_subfile; EXTERN unsigned char processing_gcc_compilation; +/* When set, we are processing a .o file compiled by sun acc. This is + misnamed; it refers to all stabs-in-elf implementations which use + N_UNDF the way Sun does, including Solaris gcc. Hopefully all + stabs-in-elf implementations ever invented will choose to be + compatible. */ + +EXTERN unsigned char processing_acc_compilation; + /* Count symbols as they are processed, for error messages. */ EXTERN unsigned int symnum; -/* Vector of types defined so far, indexed by their dbx type numbers. - (In newer sun systems, dbx uses a pair of numbers in parens, - as in "(SUBFILENUM,NUMWITHINSUBFILE)". Then these numbers must be - translated through the type_translations hash table to get - the index into the type vector.) */ +/* Record the symbols defined for each context in a list. We don't + create a struct block for the context until we know how long to + make it. */ -EXTERN struct type **type_vector; +#define PENDINGSIZE 100 -/* Number of elements allocated for type_vector currently. */ +struct pending + { + struct pending *next; + int nsyms; + struct symbol *symbol[PENDINGSIZE]; + }; -EXTERN int type_vector_length; +/* Here are the three lists that symbols are put on. */ -/* Hash table of global symbols whose values are not known yet. - They are chained thru the SYMBOL_VALUE_CHAIN, since we don't - have the correct data for that slot yet. */ -/* The use of the LOC_BLOCK code in this chain is nonstandard-- - it refers to a FORTRAN common block rather than the usual meaning. */ +/* static at top level, and types */ -#define HASHSIZE 127 -EXTERN struct symbol *global_sym_chain[HASHSIZE]; +EXTERN struct pending *file_symbols; -/* Record the symbols defined for each context in a list. - We don't create a struct block for the context until we - know how long to make it. */ +/* global functions and variables */ -#define PENDINGSIZE 100 +EXTERN struct pending *global_symbols; -struct pending -{ - struct pending *next; - int nsyms; - struct symbol *symbol[PENDINGSIZE]; -}; +/* everything local to lexical context */ -/* List of free `struct pending' structures for reuse. */ -EXTERN struct pending *free_pendings; +EXTERN struct pending *local_symbols; -/* Here are the three lists that symbols are put on. */ +/* func params local to lexical context */ -EXTERN struct pending *file_symbols; /* static at top level, and types */ +EXTERN struct pending *param_symbols; -EXTERN struct pending *global_symbols; /* global functions and variables */ +/* "using" directives local to lexical context. */ -EXTERN struct pending *local_symbols; /* everything local to lexic context */ +EXTERN struct using_direct *using_directives; -/* Kludge for xcoffread.c */ -struct pending_stabs { - int count, length; - char *stab[1]; -}; +/* Stack representing unclosed lexical contexts (that will become + blocks, eventually). */ -EXTERN struct pending_stabs *global_stabs; +struct context_stack + { + /* Outer locals at the time we entered */ -/* List of symbols declared since the last BCOMM. This list is a tail - of local_symbols. When ECOMM is seen, the symbols on the list - are noted so their proper addresses can be filled in later, - using the common block base address gotten from the assembler - stabs. */ + struct pending *locals; -EXTERN struct pending *common_block; -EXTERN int common_block_i; + /* Pending func params at the time we entered */ -/* Stack representing unclosed lexical contexts - (that will become blocks, eventually). */ + struct pending *params; -struct context_stack -{ - struct pending *locals; /* Outer locals at the time we entered */ - struct pending_block *old_blocks; /* Pointer into blocklist as of entry */ - struct symbol *name; /* Name of function, if any, defining context*/ - CORE_ADDR start_addr; /* PC where this context starts */ - CORE_ADDR end_addr; /* Temp slot for exception handling. */ - int depth; /* For error-checking matching push/pop */ -}; + /* Pending using directives at the time we entered. */ + + struct using_direct *using_directives; + + /* Pointer into blocklist as of entry */ + + struct pending_block *old_blocks; + + /* Name of function, if any, defining context */ + + struct symbol *name; + + /* PC where this context starts */ + + CORE_ADDR start_addr; + + /* Temp slot for exception handling. */ + + CORE_ADDR end_addr; + + /* For error-checking matching push/pop */ + + int depth; + + }; EXTERN struct context_stack *context_stack; /* Index of first unused entry in context stack. */ + EXTERN int context_stack_depth; /* Currently allocated size of context stack. */ EXTERN int context_stack_size; -/* Macro "function" for popping contexts from the stack. Pushing is done - by a real function, push_context. This returns a pointer to a struct - context_stack. */ - -#define pop_context() \ - (&context_stack[--context_stack_depth]); +/* Non-zero if the context stack is empty. */ +#define outermost_context_p() (context_stack_depth == 0) -/* Nonzero if within a function (so symbols should be local, - if nothing says specifically). */ +/* Nonzero if within a function (so symbols should be local, if + nothing says specifically). */ EXTERN int within_function; @@ -178,175 +190,119 @@ EXTERN int within_function; This is used at the end to make the blockvector. */ struct pending_block -{ - struct pending_block *next; - struct block *block; -}; - -EXTERN struct pending_block *pending_blocks; - -/* Global variable which, when set, indicates that we are processing a - .o file compiled with gcc */ - -EXTERN unsigned char processing_gcc_compilation; + { + struct pending_block *next; + struct block *block; + }; -/* The type code that process_one_symbol saw on its previous invocation. - Used to detect pairs of N_SO symbols. */ +/* Pointer to the head of a linked list of symbol blocks which have + already been finalized (lexical contexts already closed) and which + are just waiting to be built into a blockvector when finalizing the + associated symtab. */ -EXTERN int previous_stab_code; - -/* Setup a define to deal cleanly with the underscore problem */ - -#ifdef NAMES_HAVE_UNDERSCORE -#define HASH_OFFSET 1 -#else -#define HASH_OFFSET 0 -#endif +EXTERN struct pending_block *pending_blocks; -/* Support for Sun changes to dbx symbol format */ - -/* For each identified header file, we have a table of types defined - in that header file. - - header_files maps header file names to their type tables. - It is a vector of n_header_files elements. - Each element describes one header file. - It contains a vector of types. - - Sometimes it can happen that the same header file produces - different results when included in different places. - This can result from conditionals or from different - things done before including the file. - When this happens, there are multiple entries for the file in this table, - one entry for each distinct set of results. - The entries are distinguished by the INSTANCE field. - The INSTANCE field appears in the N_BINCL and N_EXCL symbol table and is - used to match header-file references to their corresponding data. */ -struct header_file -{ - char *name; /* Name of header file */ - int instance; /* Numeric code distinguishing instances - of one header file that produced - different results when included. - It comes from the N_BINCL or N_EXCL. */ - struct type **vector; /* Pointer to vector of types */ - int length; /* Allocated length (# elts) of that vector */ -}; +struct subfile_stack + { + struct subfile_stack *next; + char *name; + }; -EXTERN struct header_file *header_files; +EXTERN struct subfile_stack *subfile_stack; -EXTERN int n_header_files; +#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile) -EXTERN int n_allocated_header_files; +/* Function to invoke get the next symbol. Return the symbol name. */ -/* Within each object file, various header files are assigned numbers. - A type is defined or referred to with a pair of numbers - (FILENUM,TYPENUM) where FILENUM is the number of the header file - and TYPENUM is the number within that header file. - TYPENUM is the index within the vector of types for that header file. +EXTERN char *(*next_symbol_text_func) (struct objfile *); - FILENUM == 1 is special; it refers to the main source of the object file, - and not to any header file. FILENUM != 1 is interpreted by looking it up - in the following table, which contains indices in header_files. */ +/* Vector of types defined so far, indexed by their type numbers. + Used for both stabs and coff. (In newer sun systems, dbx uses a + pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)". + Then these numbers must be translated through the type_translations + hash table to get the index into the type vector.) */ -EXTERN int *this_object_header_files; +EXTERN struct type **type_vector; -EXTERN int n_this_object_header_files; +/* Number of elements allocated for type_vector currently. */ -EXTERN int n_allocated_this_object_header_files; +EXTERN int type_vector_length; -struct subfile_stack -{ - struct subfile_stack *next; - char *name; -}; +/* Initial size of type vector. Is realloc'd larger if needed, and + realloc'd down to the size actually used, when completed. */ -EXTERN struct subfile_stack *subfile_stack; +#define INITIAL_TYPE_VECTOR_LENGTH 160 -extern struct complaint unknown_symtype_complaint; +extern void add_free_pendings (struct pending *list); -#define next_symbol_text() (*next_symbol_text_func)() +extern void add_symbol_to_list (struct symbol *symbol, + struct pending **listhead); -/* Function to invoke get the next symbol. Return the symbol name. */ +extern struct symbol *find_symbol_in_list (struct pending *list, + char *name, int length); -EXTERN char *(*next_symbol_text_func) PARAMS ((void)); +extern struct block *finish_block (struct symbol *symbol, + struct pending **listhead, + struct pending_block *old_blocks, + CORE_ADDR start, CORE_ADDR end, + struct objfile *objfile); -extern void -add_symbol_to_list PARAMS ((struct symbol *, struct pending **)); +extern void record_block_range (struct block *, + CORE_ADDR start, CORE_ADDR end_inclusive); -extern struct symbol * -find_symbol_in_list PARAMS ((struct pending *, char *, int)); +extern void really_free_pendings (void *dummy); -extern void -read_type_number PARAMS ((char **, int *)); +extern void start_subfile (char *name, char *dirname); -extern struct type * -read_type PARAMS ((char **, struct objfile *)); +extern void patch_subfile_names (struct subfile *subfile, char *name); -extern struct type ** -dbx_lookup_type PARAMS ((int [2])); +extern void push_subfile (void); -extern long -read_number PARAMS ((char **, int)); +extern char *pop_subfile (void); -extern void -finish_block PARAMS ((struct symbol *, struct pending **, - struct pending_block *, CORE_ADDR, CORE_ADDR, - struct objfile *)); +extern struct symtab *end_symtab (CORE_ADDR end_addr, + struct objfile *objfile, int section); -extern void -add_undefined_type PARAMS ((struct type *)); +/* Defined in stabsread.c. */ -extern void -really_free_pendings PARAMS ((int foo)); +extern void scan_file_globals (struct objfile *objfile); -extern void -start_subfile PARAMS ((char *, char *)); +extern void buildsym_new_init (void); -extern void -push_subfile PARAMS ((void)); +extern void buildsym_init (void); -extern char * -pop_subfile PARAMS ((void)); +extern struct context_stack *push_context (int desc, CORE_ADDR valu); -extern struct symtab * -end_symtab PARAMS ((CORE_ADDR, int, int,struct objfile *)); +extern struct context_stack *pop_context (void); -extern void -scan_file_globals PARAMS ((struct objfile *)); +extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc); -extern void -buildsym_new_init PARAMS ((void)); +extern void start_symtab (char *name, char *dirname, CORE_ADDR start_addr); -extern void -buildsym_init PARAMS ((void)); +extern int hashname (char *name); -extern struct context_stack * -push_context PARAMS ((int, CORE_ADDR)); +extern void free_pending_blocks (void); -extern void -record_line PARAMS ((struct subfile *, int, CORE_ADDR)); +/* FIXME: Note that this is used only in buildsym.c and dstread.c, + which should be fixed to not need direct access to + record_pending_block. */ -extern void -start_symtab PARAMS ((char *, char *, CORE_ADDR)); +extern void record_pending_block (struct objfile *objfile, + struct block *block, + struct pending_block *opblock); -extern struct symbol * -define_symbol PARAMS ((unsigned int, char *, int, int, struct objfile *)); +extern void record_debugformat (char *format); -extern struct partial_symtab * -start_psymtab PARAMS ((struct objfile *, CORE_ADDR, char *, CORE_ADDR, int, - struct partial_symbol *, struct partial_symbol *)); +extern void record_producer (const char *producer); -extern void -end_psymtab PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR, - struct partial_symtab **, int)); +extern void merge_symbol_lists (struct pending **srclist, + struct pending **targetlist); -extern void -process_one_symbol PARAMS ((int, int, CORE_ADDR, char *, int, - struct objfile *)); +/* The macro table for the compilation unit whose symbols we're + currently reading. All the symtabs for this CU will point to this. */ +EXTERN struct macro_table *pending_macros; -extern int -hashname PARAMS ((char *)); +#undef EXTERN -#endif /* defined (BUILDSYM_H) */ +#endif /* defined (BUILDSYM_H) */