/* Build symbol tables in GDB's internal format.
- 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.
+ Copyright (C) 1986-2018 Free Software Foundation, Inc.
This file is part of GDB.
struct objfile;
struct symbol;
struct addrmap;
+struct compunit_symtab;
+enum language;
/* This module provides definitions used for creating and adding to
the symbol table. These routines are called from various symbol-
this technique. */
struct block;
+struct pending_block;
+
+struct dynamic_prop;
#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 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. 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. */
struct subfile
- {
- 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;
-
-/* 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;
-
-/* Count symbols as they are processed, for error messages. */
-
-EXTERN unsigned int symnum;
+{
+ struct subfile *next;
+ /* Space for this is malloc'd. */
+ char *name;
+ /* Space for this is malloc'd. */
+ struct linetable *line_vector;
+ int line_vector_length;
+ /* The "containing" compunit. */
+ struct buildsym_compunit *buildsym_compunit;
+ enum language language;
+ struct symtab *symtab;
+};
/* 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
EXTERN struct pending *local_symbols;
-/* func params local to lexical context */
-
-EXTERN struct pending *param_symbols;
-
-/* "using" directives local to lexical context. */
-
-EXTERN struct using_direct *using_directives;
-
/* Stack representing unclosed lexical contexts (that will become
blocks, eventually). */
struct pending *locals;
- /* Pending func params at the time we entered */
-
- struct pending *params;
-
/* Pending using directives at the time we entered. */
- struct using_direct *using_directives;
+ struct using_direct *local_using_directives;
/* Pointer into blocklist as of entry */
struct symbol *name;
+ /* Expression that computes the frame base of the lexically enclosing
+ function, if any. NULL otherwise. */
+
+ struct dynamic_prop *static_link;
+
/* PC where this context starts */
CORE_ADDR start_addr;
- /* Temp slot for exception handling. */
+ /* Temp slot for exception handling. */
CORE_ADDR end_addr;
};
-EXTERN struct context_stack *context_stack;
+/* The type of the record_line function. */
+typedef void (record_line_ftype) (struct subfile *subfile, int line,
+ CORE_ADDR pc);
-/* Index of first unused entry in context stack. */
+\f
-EXTERN int context_stack_depth;
+extern void add_symbol_to_list (struct symbol *symbol,
+ struct pending **listhead);
-/* Currently allocated size of context stack. */
+extern struct symbol *find_symbol_in_list (struct pending *list,
+ char *name, int length);
-EXTERN int context_stack_size;
+extern struct block *finish_block (struct symbol *symbol,
+ struct pending **listhead,
+ struct pending_block *old_blocks,
+ const struct dynamic_prop *static_link,
+ CORE_ADDR start,
+ CORE_ADDR end);
-/* Non-zero if the context stack is empty. */
-#define outermost_context_p() (context_stack_depth == 0)
+extern void record_block_range (struct block *,
+ CORE_ADDR start, CORE_ADDR end_inclusive);
-/* Nonzero if within a function (so symbols should be local, if
- nothing says specifically). */
+class scoped_free_pendings
+{
+public:
-EXTERN int within_function;
+ scoped_free_pendings ();
+ ~scoped_free_pendings ();
-/* List of blocks already made (lexical contexts already closed).
- This is used at the end to make the blockvector. */
+ DISABLE_COPY_AND_ASSIGN (scoped_free_pendings);
+};
-struct pending_block
- {
- struct pending_block *next;
- struct block *block;
- };
+extern void start_subfile (const char *name);
-/* 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 void patch_subfile_names (struct subfile *subfile, const char *name);
-EXTERN struct pending_block *pending_blocks;
-\f
+extern void push_subfile ();
-struct subfile_stack
- {
- struct subfile_stack *next;
- char *name;
- };
+extern const char *pop_subfile ();
-EXTERN struct subfile_stack *subfile_stack;
+extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
+ int expandable,
+ int required);
-#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
+extern struct compunit_symtab *
+ end_symtab_from_static_block (struct block *static_block,
+ int section, int expandable);
-/* Function to invoke get the next symbol. Return the symbol name. */
+extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section);
-EXTERN char *(*next_symbol_text_func) (struct objfile *);
+extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
+ int section);
-/* 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 void augment_type_symtab (void);
-EXTERN struct type **type_vector;
+extern void buildsym_init ();
-/* Number of elements allocated for type_vector currently. */
+extern struct context_stack *push_context (int desc, CORE_ADDR valu);
-EXTERN int type_vector_length;
+extern struct context_stack pop_context ();
-/* Initial size of type vector. Is realloc'd larger if needed, and
- realloc'd down to the size actually used, when completed. */
+extern record_line_ftype record_line;
-#define INITIAL_TYPE_VECTOR_LENGTH 160
+extern struct compunit_symtab *start_symtab (struct objfile *objfile,
+ const char *name,
+ const char *comp_dir,
+ CORE_ADDR start_addr,
+ enum language language);
-extern void add_free_pendings (struct pending *list);
+extern void restart_symtab (struct compunit_symtab *cust,
+ const char *name, CORE_ADDR start_addr);
-extern void add_symbol_to_list (struct symbol *symbol,
- struct pending **listhead);
+/* 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 struct symbol *find_symbol_in_list (struct pending *list,
- char *name, int length);
+extern void record_debugformat (const char *format);
-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);
+/* 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_block_range (struct block *,
- CORE_ADDR start, CORE_ADDR end_inclusive);
+extern void record_producer (const char *producer);
-extern void really_free_pendings (void *dummy);
+/* Set the name of the last source file. NAME is copied by this
+ function. */
-extern void start_subfile (const char *name, const char *dirname);
+extern void set_last_source_file (const char *name);
-extern void patch_subfile_names (struct subfile *subfile, char *name);
+/* Fetch the name of the last source file. */
-extern void push_subfile (void);
+extern const char *get_last_source_file (void);
-extern char *pop_subfile (void);
+/* Return the compunit symtab object.
+ It is only valid to call this between calls to start_symtab and the
+ end_symtab* functions. */
-extern struct symtab *end_symtab (CORE_ADDR end_addr,
- struct objfile *objfile, int section);
+extern struct compunit_symtab *buildsym_compunit_symtab (void);
-/* Defined in stabsread.c. */
+/* Return the macro table.
+ Initialize it if this is the first use.
+ It is only valid to call this between calls to start_symtab and the
+ end_symtab* functions. */
-extern void scan_file_globals (struct objfile *objfile);
+extern struct macro_table *get_macro_table (void);
-extern void buildsym_new_init (void);
+/* Set the last source start address. Can only be used between
+ start_symtab and end_symtab* calls. */
-extern void buildsym_init (void);
+extern void set_last_source_start_addr (CORE_ADDR addr);
-extern struct context_stack *push_context (int desc, CORE_ADDR valu);
+/* Get the last source start address. Can only be used between
+ start_symtab and end_symtab* calls. */
-extern struct context_stack *pop_context (void);
+extern CORE_ADDR get_last_source_start_addr ();
-extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc);
+/* Return the local using directives. */
-extern void start_symtab (char *name, char *dirname, CORE_ADDR start_addr);
+extern struct using_direct **get_local_using_directives ();
-extern int hashname (char *name);
+/* Set the list of local using directives. */
-extern void free_pending_blocks (void);
+extern void set_local_using_directives (struct using_direct *new_local);
-/* 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. */
+/* Return the global using directives. */
-extern void record_pending_block (struct objfile *objfile,
- struct block *block,
- struct pending_block *opblock);
+extern struct using_direct **get_global_using_directives ();
-extern void record_debugformat (char *format);
+/* True if the context stack is empty. */
-extern void record_producer (const char *producer);
+extern bool outermost_context_p ();
+
+/* Return the top of the context stack, or nullptr if there is an
+ entry. */
+
+extern struct context_stack *get_current_context_stack ();
+
+/* Return the context stack depth. */
+
+extern int get_context_stack_depth ();
-extern void merge_symbol_lists (struct pending **srclist,
- struct pending **targetlist);
+/* Return the current subfile. */
-/* 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 struct subfile *get_current_subfile ();
#undef EXTERN
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