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Diffstat (limited to 'gdb/buildsym.h')
| -rw-r--r-- | gdb/buildsym.h | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/gdb/buildsym.h b/gdb/buildsym.h new file mode 100644 index 00000000000..e3a34c9d080 --- /dev/null +++ b/gdb/buildsym.h @@ -0,0 +1,297 @@ +/* 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) */ |