X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fbuildsym.h;h=1604ef51fb443f958bebbf4db63f469ee203889b;hb=2e6af8c0457c1d449c64e16741ae88b87a490ce7;hp=0cea60bcfe05ae8623af94fe671ca760c70066dd;hpb=4137c5fc0d1b24d00ceec0981ea5d9da77477f0e;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/buildsym.h b/gdb/buildsym.h index 0cea60bcfe..1604ef51fb 100644 --- a/gdb/buildsym.h +++ b/gdb/buildsym.h @@ -1,88 +1,78 @@ /* Build symbol tables in GDB's internal format. - Copyright (C) 1986-1991 Free Software Foundation, Inc. + Copyright (C) 1986-1993, 1995-2000, 2002-2003, 2007-2012 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 -extern void add_symbol_to_list (); -extern void process_one_symbol (); -extern struct type *read_type (); -extern struct type *read_range_type (); -extern struct type *read_enum_type (); -extern struct type *read_struct_type (); -extern struct type *read_array_type (); -extern struct type **read_args (); -extern struct type **dbx_lookup_type (); -extern long read_number (); -extern void finish_block (); -extern struct blockvector *make_blockvector (); -extern void add_undefined_type (); -extern void really_free_pendings (); -extern void start_subfile (); -extern struct symtab *end_symtab (); -extern void scan_file_globals (); -extern void buildsym_new_init (); -extern void buildsym_init (); - -/* Convert stab register number (from `r' declaration) to a gdb REGNUM. */ - -#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. */ +#define HASHSIZE 127 /* Size of things hashed via + hashname(). */ + +/* 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; + const char *producer; + const char *debugformat; + struct symtab *symtab; + }; EXTERN struct subfile *current_subfile; @@ -91,97 +81,107 @@ 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; -EXTERN struct pending_stabs *file_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; - struct pending_block *old_blocks; - struct symbol *name; - CORE_ADDR start_addr; - CORE_ADDR end_addr; /* Temp slot for exception handling. */ - int depth; -}; + /* 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; -/* Nonzero if within a function (so symbols should be local, - if nothing says specifically). */ +/* 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). */ EXTERN int within_function; @@ -189,78 +189,128 @@ EXTERN int within_function; This is used at the end to make the blockvector. */ struct pending_block -{ - struct pending_block *next; - struct block *block; -}; + { + struct pending_block *next; + struct block *block; + }; + +/* 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 struct pending_block *pending_blocks; + -extern CORE_ADDR startup_file_start; /* From blockframe.c */ -extern CORE_ADDR startup_file_end; /* From blockframe.c */ +struct subfile_stack + { + struct subfile_stack *next; + char *name; + }; -/* Global variable which, when set, indicates that we are processing a - .o file compiled with gcc */ +EXTERN struct subfile_stack *subfile_stack; -EXTERN unsigned char processing_gcc_compilation; +#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile) -/* Setup a define to deal cleanly with the underscore problem */ +/* Function to invoke get the next symbol. Return the symbol name. */ -#ifdef NAMES_HAVE_UNDERSCORE -#define HASH_OFFSET 1 -#else -#define HASH_OFFSET 0 -#endif - -/* 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 */ -}; - -EXTERN struct header_file *header_files; - -EXTERN int n_header_files; - -EXTERN int n_allocated_header_files; - -/* 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. - - 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. */ - -EXTERN int *this_object_header_files; - -EXTERN int n_this_object_header_files; - -EXTERN int n_allocated_this_object_header_files; +EXTERN char *(*next_symbol_text_func) (struct objfile *); + +/* 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 struct type **type_vector; + +/* Number of elements allocated for type_vector currently. */ + +EXTERN int type_vector_length; + +/* Initial size of type vector. Is realloc'd larger if needed, and + realloc'd down to the size actually used, when completed. */ + +#define INITIAL_TYPE_VECTOR_LENGTH 160 + +extern void add_free_pendings (struct pending *list); + +extern void add_symbol_to_list (struct symbol *symbol, + struct pending **listhead); + +extern struct symbol *find_symbol_in_list (struct pending *list, + char *name, int length); + +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 record_block_range (struct block *, + CORE_ADDR start, CORE_ADDR end_inclusive); + +extern void really_free_pendings (void *dummy); + +extern void start_subfile (const char *name, const char *dirname); + +extern void patch_subfile_names (struct subfile *subfile, char *name); + +extern void push_subfile (void); + +extern char *pop_subfile (void); + +extern struct symtab *end_symtab (CORE_ADDR end_addr, + struct objfile *objfile, int section); + +/* Defined in stabsread.c. */ + +extern void scan_file_globals (struct objfile *objfile); + +extern void buildsym_new_init (void); + +extern void buildsym_init (void); + +extern struct context_stack *push_context (int desc, CORE_ADDR valu); + +extern struct context_stack *pop_context (void); + +extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc); + +extern void start_symtab (char *name, char *dirname, CORE_ADDR start_addr); + +extern int hashname (char *name); + +extern void free_pending_blocks (void); + +/* 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 record_pending_block (struct objfile *objfile, + struct block *block, + struct pending_block *opblock); + +/* Record the name of the debug format in the current pending symbol + table. FORMAT must be a string with a lifetime at least as long as + the symtab's objfile. */ + +extern void record_debugformat (const char *format); + +/* Record the name of the debuginfo producer (usually the compiler) in + the current pending symbol table. PRODUCER must be a string with a + lifetime at least as long as the symtab's objfile. */ + +extern void record_producer (const char *producer); + +extern void merge_symbol_lists (struct pending **srclist, + struct pending **targetlist); + +/* 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; + +#undef EXTERN + +#endif /* defined (BUILDSYM_H) */