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+/* Build symbol tables in GDB's internal format.
+ Copyright 1986-1993, 1996-1999 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 (BUILDSYM_H)
+#define BUILDSYM_H 1
+
+/* This module provides definitions used for creating and adding to
+ the symbol table. These routines are called from various symbol-
+ 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. */
+
+#ifndef EXTERN
+#define EXTERN extern
+#endif
+
+#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. */
+
+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. */
+
+struct subfile
+ {
+ 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 struct subfile *current_subfile;
+
+/* Global variable which, when set, indicates that we are processing a
+ .o file compiled with gcc */
+
+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;
+
+/* elz: added this flag to know when a block is compiled with HP
+ compilers (cc, aCC). This is necessary because of the macro
+ COERCE_FLOAT_TO_DOUBLE defined in tm_hppa.h, which causes a
+ coercion of float to double to always occur in parameter passing
+ for a function called by gdb (see the function value_arg_coerce in
+ valops.c). This is necessary only if the target was compiled with
+ gcc, not with HP compilers or with g++ */
+
+EXTERN unsigned char processing_hp_compilation;
+
+/* Count symbols as they are processed, for error messages. */
+
+EXTERN unsigned int symnum;
+
+/* 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. */
+
+#define PENDINGSIZE 100
+
+struct pending
+ {
+ struct pending *next;
+ int nsyms;
+ struct symbol *symbol[PENDINGSIZE];
+ };
+
+/* Here are the three lists that symbols are put on. */
+
+/* static at top level, and types */
+
+EXTERN struct pending *file_symbols;
+
+/* global functions and variables */
+
+EXTERN struct pending *global_symbols;
+
+/* everything local to lexical context */
+
+EXTERN struct pending *local_symbols;
+
+/* func params local to lexical context */
+
+EXTERN struct pending *param_symbols;
+
+/* Stack representing unclosed lexical contexts (that will become
+ blocks, eventually). */
+
+struct context_stack
+ {
+ /* Outer locals at the time we entered */
+
+ struct pending *locals;
+
+ /* Pending func params at the time we entered */
+
+ struct pending *params;
+
+ /* 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]);
+
+/* Nonzero if within a function (so symbols should be local, if
+ nothing says specifically). */
+
+EXTERN int within_function;
+
+/* List of blocks already made (lexical contexts already closed).
+ This is used at the end to make the blockvector. */
+
+struct pending_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;
+
+
+struct subfile_stack
+ {
+ struct subfile_stack *next;
+ char *name;
+ };
+
+EXTERN struct subfile_stack *subfile_stack;
+
+#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
+
+/* Function to invoke get the next symbol. Return the symbol name. */
+
+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_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 (int foo);
+
+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 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
+ make_blockvector. */
+
+extern struct blockvector *make_blockvector (struct objfile *objfile);
+
+/* 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);
+
+#undef EXTERN
+
+#endif /* defined (BUILDSYM_H) */