/* Build symbol tables in GDB's internal format.
- Copyright (C) 1986-1991 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2002, 2003 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 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.
+ 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#if !defined (BUILDSYM_H)
+#define BUILDSYM_H 1
+
+struct objfile;
+struct symbol;
/* 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 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
-\f
-/* 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. */
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. */
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;
- int line_vector_index;
- int prev_line_number;
-};
+ {
+ struct subfile *next;
+ char *name;
+ char *dirname;
+ struct linetable *line_vector;
+ int line_vector_length;
+ enum language language;
+ char *debugformat;
+ };
EXTERN struct subfile *subfiles;
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. */
-/* Vector of line number information. */
+/* static at top level, and types */
-EXTERN struct linetable *line_vector;
+EXTERN struct pending *file_symbols;
-/* Index of next entry to go in line_vector_index. */
+/* global functions and variables */
-EXTERN int line_vector_index;
+EXTERN struct pending *global_symbols;
-/* Last line number recorded in the line vector. */
+/* everything local to lexical context */
-EXTERN int prev_line_number;
+EXTERN struct pending *local_symbols;
-/* Number of elements allocated for line_vector currently. */
+/* func params local to lexical context */
-EXTERN int line_vector_length;
+EXTERN struct pending *param_symbols;
-/* 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. */
+/* Stack representing unclosed lexical contexts (that will become
+ blocks, eventually). */
-#define HASHSIZE 127
-EXTERN struct symbol *global_sym_chain[HASHSIZE];
+struct context_stack
+ {
+ /* Outer locals at the time we entered */
-/* 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. */
+ struct pending *locals;
-#define PENDINGSIZE 100
+ /* Pending func params at the time we entered */
-struct pending
-{
- struct pending *next;
- int nsyms;
- struct symbol *symbol[PENDINGSIZE];
-};
+ struct pending *params;
-/* List of free `struct pending' structures for reuse. */
-EXTERN struct pending *free_pendings;
+ /* Pointer into blocklist as of entry */
-/* Here are the three lists that symbols are put on. */
+ struct pending_block *old_blocks;
-EXTERN struct pending *file_symbols; /* static at top level, and types */
+ /* Name of function, if any, defining context */
-EXTERN struct pending *global_symbols; /* global functions and variables */
+ struct symbol *name;
-EXTERN struct pending *local_symbols; /* everything local to lexical context */
+ /* PC where this context starts */
-/* 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. */
+ CORE_ADDR start_addr;
-EXTERN struct pending *common_block;
-EXTERN int common_block_i;
+ /* Temp slot for exception handling. */
-/* Stack representing unclosed lexical contexts
- (that will become blocks, eventually). */
+ CORE_ADDR end_addr;
-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;
-};
+ /* 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;
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;
+\f
-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
-\f
-/* 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 void finish_block (struct symbol *symbol,
+ struct pending **listhead,
+ struct pending_block *old_blocks,
+ CORE_ADDR start, CORE_ADDR end,
+ struct objfile *objfile);
+
+extern void really_free_pendings (void *dummy);
+
+extern void start_subfile (char *name, 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);
+
+extern void record_debugformat (char *format);
+
+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) */
projects / binutils.git / blobdiff