X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fbuildsym.h;h=3e0132782c09cd07c52106718eea98ec061e4445;hb=97f50151221de0a023a8317559b1992a90f9cb8f;hp=80fad8e432d655bde69105ee4625bf4dd045eab7;hpb=7e258d18e0112304099fbefbe910a53659b98a3d;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/buildsym.h b/gdb/buildsym.h index 80fad8e432..3e0132782c 100644 --- a/gdb/buildsym.h +++ b/gdb/buildsym.h @@ -1,99 +1,77 @@ /* Build symbol tables in GDB's internal format. - Copyright (C) 1986-1991 Free Software Foundation, Inc. + Copyright (C) 1986-2016 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; +struct compunit_symtab; /* 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. */ -#ifndef EXTERN -#define EXTERN extern -#endif +struct block; +struct pending_block; + +struct dynamic_prop; -extern void add_symbol_to_list (); -struct symbol *find_symbol_in_list (); -extern void read_type_number (); -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 void push_subfile (); -extern char *pop_subfile (); -extern struct symtab *end_symtab (); -extern void scan_file_globals (); -extern void buildsym_new_init (); -extern void buildsym_init (); -extern struct context_stack *push_context (); -extern void record_line (); -extern void start_symtab (); -extern struct symbol *define_symbol (); -extern struct partial_symtab *start_psymtab (); -extern void end_psymtab(); - - -/* Convert stab register number (from `r' declaration) to a gdb REGNUM. */ - -#ifndef STAB_REG_TO_REGNUM -#define STAB_REG_TO_REGNUM(VALUE) (VALUE) +#ifndef EXTERN +#define EXTERN extern #endif - -/* 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; +#define HASHSIZE 127 /* Size of things hashed via + hashname(). */ -/* 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; + /* Space for this is malloc'd. */ char *name; - char *dirname; + /* 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; }; -EXTERN struct subfile *subfiles; - EXTERN struct subfile *current_subfile; /* Global variable which, when set, indicates that we are processing a @@ -101,204 +79,227 @@ 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. */ +/* "using" directives local to lexical context. */ -EXTERN struct pending *file_symbols; /* static at top level, and types */ +EXTERN struct using_direct *local_using_directives; -EXTERN struct pending *global_symbols; /* global functions and variables */ +/* global "using" directives. */ -EXTERN struct pending *local_symbols; /* everything local to lexic context */ +EXTERN struct using_direct *global_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 using directives at the time we entered. */ -/* Stack representing unclosed lexical contexts - (that will become blocks, eventually). */ + struct using_direct *local_using_directives; -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 */ -}; + /* Pointer into blocklist as of entry */ + + struct pending_block *old_blocks; + + /* Name of function, if any, defining context */ + + 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. */ + + 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; -/* List of blocks already made (lexical contexts already closed). - This is used at the end to make the blockvector. */ +/* The type of the record_line function. */ +typedef void (record_line_ftype) (struct subfile *subfile, int line, + CORE_ADDR pc); -struct pending_block -{ - struct pending_block *next; - struct block *block; -}; + -EXTERN struct pending_block *pending_blocks; +#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile) -extern CORE_ADDR startup_file_start; /* From blockframe.c */ -extern CORE_ADDR startup_file_end; /* From blockframe.c */ +/* Function to invoke get the next symbol. Return the symbol name. */ -/* Global variable which, when set, indicates that we are processing a - .o file compiled with gcc */ +EXTERN char *(*next_symbol_text_func) (struct objfile *); -EXTERN unsigned char processing_gcc_compilation; +extern void add_symbol_to_list (struct symbol *symbol, + struct pending **listhead); -/* The type code that process_one_symbol saw on its previous invocation. - Used to detect pairs of N_SO symbols. */ +extern struct symbol *find_symbol_in_list (struct pending *list, + char *name, int length); -EXTERN int previous_stab_code; +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); -/* Setup a define to deal cleanly with the underscore problem */ +extern void record_block_range (struct block *, + CORE_ADDR start, CORE_ADDR end_inclusive); -#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 void really_free_pendings (void *dummy); -EXTERN struct header_file *header_files; +extern void start_subfile (const char *name); -EXTERN int n_header_files; +extern void patch_subfile_names (struct subfile *subfile, char *name); -EXTERN int n_allocated_header_files; +extern void push_subfile (void); -/* 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 *pop_subfile (void); - 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 struct block *end_symtab_get_static_block (CORE_ADDR end_addr, + int expandable, + int required); -EXTERN int *this_object_header_files; +extern struct compunit_symtab * + end_symtab_from_static_block (struct block *static_block, + int section, int expandable); -EXTERN int n_this_object_header_files; +extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section); -EXTERN int n_allocated_this_object_header_files; +extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr, + int section); -/* When a header file is getting special overriding definitions - for one source file, record here the header_files index - of its normal definition vector. - At other times, this is -1. */ +extern void augment_type_symtab (void); -EXTERN int header_file_prev_index; +/* Defined in stabsread.c. */ -struct subfile_stack -{ - struct subfile_stack *next; - char *name; - int prev_index; -}; +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 record_line_ftype record_line; + +extern struct compunit_symtab *start_symtab (struct objfile *objfile, + const char *name, + const char *comp_dir, + CORE_ADDR start_addr); + +extern void restart_symtab (struct compunit_symtab *cust, + const char *name, CORE_ADDR start_addr); + +extern int hashname (const char *name); + +extern void free_pending_blocks (void); + +/* 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); + +/* Set the name of the last source file. NAME is copied by this + function. */ + +extern void set_last_source_file (const char *name); + +/* Fetch the name of the last source file. */ + +extern const char *get_last_source_file (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 compunit_symtab *buildsym_compunit_symtab (void); + +/* 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 struct macro_table *get_macro_table (void); + +#undef EXTERN -EXTERN struct subfile_stack *subfile_stack; +#endif /* defined (BUILDSYM_H) */