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Diffstat (limited to 'gdb/RCS/dbxread.c,v')
| -rw-r--r-- | gdb/RCS/dbxread.c,v | 4610 |
1 files changed, 0 insertions, 4610 deletions
diff --git a/gdb/RCS/dbxread.c,v b/gdb/RCS/dbxread.c,v deleted file mode 100644 index eb9d1cd..0000000 --- a/gdb/RCS/dbxread.c,v +++ /dev/null @@ -1,4610 +0,0 @@ -head 1.3; -access ; -symbols ; -locks ; strict; -comment @ * @; - - -1.3 -date 89.03.27.18.41.32; author gnu; state Exp; -branches ; -next 1.2; - -1.2 -date 89.02.10.01.38.34; author gnu; state Exp; -branches ; -next 1.1; - -1.1 -date 89.02.10.01.30.11; author gnu; state Exp; -branches ; -next ; - - -desc -@@ - - -1.3 -log -@Avoid sys/fcntl.h. -@ -text -@/* Read dbx symbol tables and convert to internal format, for GDB. - Copyright (C) 1986, 1987, 1988, 1989 Free Software Foundation, Inc. - -GDB is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY. No author or distributor accepts responsibility to anyone -for the consequences of using it or for whether it serves any -particular purpose or works at all, unless he says so in writing. -Refer to the GDB General Public License for full details. - -Everyone is granted permission to copy, modify and redistribute GDB, -but only under the conditions described in the GDB General Public -License. A copy of this license is supposed to have been given to you -along with GDB so you can know your rights and responsibilities. It -should be in a file named COPYING. Among other things, the copyright -notice and this notice must be preserved on all copies. - -In other words, go ahead and share GDB, but don't try to stop -anyone else from sharing it farther. Help stamp out software hoarding! -*/ - -#include "param.h" - -#ifdef READ_DBX_FORMAT - -#ifdef USG -#include <sys/types.h> -#include <fcntl.h> -#define L_SET 0 -#define L_INCR 1 -#endif - -#ifdef COFF_ENCAPSULATE -#include "a.out.encap.h" -#include "stab.gnu.h" -#else -#include <a.out.h> -#include <stab.h> -#endif - -/* - * Define specifically gnu symbols here. - */ - -/* The following type indicates the definition of a symbol as being - an indirect reference to another symbol. The other symbol - appears as an undefined reference, immediately following this symbol. - - Indirection is asymmetrical. The other symbol's value will be used - to satisfy requests for the indirect symbol, but not vice versa. - If the other symbol does not have a definition, libraries will - be searched to find a definition. */ -#ifndef N_INDR -#define N_INDR 0xa -#endif - -/* The following symbols refer to set elements. - All the N_SET[ATDB] symbols with the same name form one set. - Space is allocated for the set in the text section, and each set - element's value is stored into one word of the space. - The first word of the space is the length of the set (number of elements). - - The address of the set is made into an N_SETV symbol - whose name is the same as the name of the set. - This symbol acts like a N_DATA global symbol - in that it can satisfy undefined external references. */ - -#ifndef N_SETA -#define N_SETA 0x14 /* Absolute set element symbol */ -#endif /* This is input to LD, in a .o file. */ - -#ifndef N_SETT -#define N_SETT 0x16 /* Text set element symbol */ -#endif /* This is input to LD, in a .o file. */ - -#ifndef N_SETD -#define N_SETD 0x18 /* Data set element symbol */ -#endif /* This is input to LD, in a .o file. */ - -#ifndef N_SETB -#define N_SETB 0x1A /* Bss set element symbol */ -#endif /* This is input to LD, in a .o file. */ - -/* Macros dealing with the set element symbols defined in a.out.h */ -#define SET_ELEMENT_P(x) ((x)>=N_SETA&&(x)<=(N_SETB|N_EXT)) -#define TYPE_OF_SET_ELEMENT(x) ((x)-N_SETA+N_ABS) - -#ifndef N_SETV -#define N_SETV 0x1C /* Pointer to set vector in data area. */ -#endif /* This is output from LD. */ - -#ifndef N_WARNING -#define N_WARNING 0x1E /* Warning message to print if file included */ -#endif /* This is input to ld */ - -#ifndef __GNU_STAB__ - -/* Line number for the data section. This is to be used to describe - the source location of a variable declaration. */ -#ifndef N_DSLINE -#define N_DSLINE (N_SLINE+N_DATA-N_TEXT) -#endif - -/* Line number for the bss section. This is to be used to describe - the source location of a variable declaration. */ -#ifndef N_BSLINE -#define N_BSLINE (N_SLINE+N_BSS-N_TEXT) -#endif - -#endif /* not __GNU_STAB__ */ - -#include <stdio.h> -#include <obstack.h> -#include <sys/param.h> -#include <sys/file.h> -#include <sys/stat.h> -#include "defs.h" -#include "symtab.h" - -#ifndef COFF_FORMAT -#define AOUTHDR struct exec -#endif - -static void add_symbol_to_list (); -static void read_dbx_symtab (); -static void process_one_symbol (); -static void free_all_psymbols (); -static struct type *read_type (); -static struct type *read_range_type (); -static struct type *read_enum_type (); -static struct type *read_struct_type (); -static struct type *read_array_type (); -static long read_number (); -static void finish_block (); -static struct blockvector *make_blockvector (); -static struct symbol *define_symbol (); -static void start_subfile (); -static int hashname (); -static void hash_symsegs (); - -extern struct symtab *read_symsegs (); -extern void free_all_symtabs (); -extern void free_all_psymtabs (); -extern void free_inclink_symtabs (); - -/* C++ */ -static struct type **read_args(); - -/* Macro to determine which symbols to ignore when reading the first symbol - of a file. Some machines override this definition. */ -#ifdef N_NSYMS -#ifndef IGNORE_SYMBOL -/* This code is used on Ultrix systems. Ignore it */ -#define IGNORE_SYMBOL(type) (type == N_NSYMS) -#endif -#else -#ifndef IGNORE_SYMBOL -/* Don't ignore any symbols. */ -#define IGNORE_SYMBOL(type) (0) -#endif -#endif /* not N_NSYMS */ - -/* Macro for number of symbol table entries (in usual a.out format). - Some machines override this definition. */ -#ifndef NUMBER_OF_SYMBOLS -#ifdef COFF_HEADER -#define NUMBER_OF_SYMBOLS \ - ((COFF_HEADER(hdr) ? hdr.coffhdr.filehdr.f_nsyms : hdr.a_syms) / \ - sizeof (struct nlist)) -#else -#define NUMBER_OF_SYMBOLS (hdr.a_syms / sizeof (struct nlist)) -#endif -#endif - -/* Macro for file-offset of symbol table (in usual a.out format). */ -#ifndef SYMBOL_TABLE_OFFSET -#define SYMBOL_TABLE_OFFSET N_SYMOFF (hdr) -#endif - -/* Macro for file-offset of string table (in usual a.out format). */ -#ifndef STRING_TABLE_OFFSET -#define STRING_TABLE_OFFSET (N_SYMOFF (hdr) + hdr.a_syms) -#endif - -/* Macro to store the length of the string table data in INTO. */ -#ifndef READ_STRING_TABLE_SIZE -#define READ_STRING_TABLE_SIZE(INTO) \ -{ val = myread (desc, &INTO, sizeof INTO); \ - if (val < 0) perror_with_name (name); } -#endif - -/* Macro to declare variables to hold the file's header data. */ -#ifndef DECLARE_FILE_HEADERS -#define DECLARE_FILE_HEADERS AOUTHDR hdr -#endif - -/* Macro to read the header data from descriptor DESC and validate it. - NAME is the file name, for error messages. */ -#ifndef READ_FILE_HEADERS -#ifdef HEADER_SEEK_FD -#define READ_FILE_HEADERS(DESC, NAME) \ -{ HEADER_SEEK_FD (DESC); \ - val = myread (DESC, &hdr, sizeof hdr); \ - if (val < 0) perror_with_name (NAME); \ - if (N_BADMAG (hdr)) \ - error ("File \"%s\" not in executable format.", NAME); } -#else -#define READ_FILE_HEADERS(DESC, NAME) \ -{ val = myread (DESC, &hdr, sizeof hdr); \ - if (val < 0) perror_with_name (NAME); \ - if (N_BADMAG (hdr)) \ - error ("File \"%s\" not in executable format.", NAME); } -#endif -#endif - -/* Macro for size of text segment */ -#ifndef SIZE_OF_TEXT_SEGMENT -#define SIZE_OF_TEXT_SEGMENT hdr.a_text -#endif - -/* Macro for name of symbol to indicate a file compiled with gcc. */ -#ifndef GCC_COMPILED_FLAG_SYMBOL -#define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." -#endif - -/* Chain of symtabs made from reading the file's symsegs. - These symtabs do not go into symtab_list themselves, - but the information is copied from them when appropriate - to make the symtabs that will exist permanently. */ - -static struct symtab *symseg_chain; - -/* Symseg symbol table for the file whose data we are now processing. - It is one of those in symseg_chain. Or 0, for a compilation that - has no symseg. */ - -static struct symtab *current_symseg; - -/* Name of source file whose symbol data we are now processing. - This comes from a symbol of type N_SO. */ - -static char *last_source_file; - -/* Core address of start of text of current source file. - This too comes from the N_SO symbol. */ - -static CORE_ADDR last_source_start_addr; - -/* End of the text segment of the executable file, - as found in the symbol _etext. */ - -static CORE_ADDR end_of_text_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; - struct linetable *line_vector; - int line_vector_length; - int line_vector_index; - int prev_line_number; -}; - -static struct subfile *subfiles; - -static struct subfile *current_subfile; - -/* Count symbols as they are processed, for error messages. */ - -static 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.) */ - -static struct typevector *type_vector; - -/* Number of elements allocated for type_vector currently. */ - -static int type_vector_length; - -/* Vector of line number information. */ - -static struct linetable *line_vector; - -/* Index of next entry to go in line_vector_index. */ - -static int line_vector_index; - -/* Last line number recorded in the line vector. */ - -static int prev_line_number; - -/* Number of elements allocated for line_vector currently. */ - -static int line_vector_length; - -/* Hash table of global symbols whose values are not known yet. - They are chained thru the SYMBOL_VALUE, since we don't - have the correct data for that slot yet. */ - -#define HASHSIZE 127 -static struct symbol *global_sym_chain[HASHSIZE]; - -/* 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]; -}; - -/* List of free `struct pending' structures for reuse. */ -struct pending *free_pendings; - -/* Here are the three lists that symbols are put on. */ - -struct pending *file_symbols; /* static at top level, and types */ - -struct pending *global_symbols; /* global functions and variables */ - -struct pending *local_symbols; /* everything local to lexical context */ - -/* Stack representing unclosed lexical contexts - (that will become blocks, eventually). */ - -struct context_stack -{ - struct pending *locals; - struct pending_block *old_blocks; - struct symbol *name; - CORE_ADDR start_addr; - int depth; -}; - -struct context_stack *context_stack; - -/* Index of first unused entry in context stack. */ -int context_stack_depth; - -/* Currently allocated size of context stack. */ - -int context_stack_size; - -/* Nonzero if within a function (so symbols should be local, - if nothing says specifically). */ - -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; -}; - -struct pending_block *pending_blocks; - -extern CORE_ADDR first_object_file_end; /* From blockframe.c */ - -/* File name symbols were loaded from. */ - -static char *symfile; - -/* Low and high symbol values (inclusive) for the global variable - entries in the symbol file. */ - -static int first_global_sym, last_global_sym; - -/* Partial symbol list for all of the global and static symbols found - in a file */ - -struct partial_symbol *global_psymbols, *static_psymbols; -int global_psymbols_allocated, static_psymbols_allocated; - -/* Position for next psymbol to be added */ - -struct partial_symbol *next_ps_global, *next_ps_static; - -/* Global variable which, when set, indicates that we are processing a - .o file compiled with gcc */ - -static unsigned char processing_gcc_compilation; - -static int -xxmalloc (n) -{ - int v = malloc (n); - if (v == 0) - abort (); - return v; -} - -/* Make a copy of the string at PTR with SIZE characters in the symbol obstack - (and add a null character at the end in the copy). - Returns the address of the copy. */ - -static char * -obsavestring (ptr, size) - char *ptr; - int size; -{ - register char *p = (char *) obstack_alloc (symbol_obstack, size + 1); - /* Open-coded bcopy--saves function call time. - These strings are usually short. */ - { - register char *p1 = ptr; - register char *p2 = p; - char *end = ptr + size; - while (p1 != end) - *p2++ = *p1++; - } - p[size] = 0; - return p; -} - -/* Concatenate strings S1, S2 and S3; return the new string. - Space is found in the symbol_obstack. */ - -static char * -obconcat (s1, s2, s3) - char *s1, *s2, *s3; -{ - register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; - register char *val = (char *) obstack_alloc (symbol_obstack, len); - strcpy (val, s1); - strcat (val, s2); - strcat (val, s3); - return val; -} - -/* 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 */ -}; - -static struct header_file *header_files; - -static int n_header_files; - -static int n_allocated_header_files; - -/* During initial symbol readin, we need to have a structure to keep - track of which psymtabs have which bincls in them. This structure - is used during readin to setup the list of dependencies within each - partial symbol table. */ - -struct header_file_location -{ - char *name; /* Name of header file */ - int instance; /* See above */ - struct partial_symtab *pst; /* Partial symtab that has the - BINCL/EINCL defs for this file */ -}; - -/* The actual list and controling variables */ -static struct header_file_location *bincl_list, *next_bincl; -static int bincls_allocated; - -/* 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. */ - -static int *this_object_header_files; - -static int n_this_object_header_files; - -static int n_allocated_this_object_header_files; - -/* 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. */ - -static int header_file_prev_index; - -/* At the start of reading dbx symbols, allocate our tables. */ - -static void -init_header_files () -{ - n_allocated_header_files = 10; - header_files = (struct header_file *) xxmalloc (10 * sizeof (struct header_file)); - n_header_files = 0; - - n_allocated_this_object_header_files = 10; - this_object_header_files = (int *) xxmalloc (10 * sizeof (int)); -} - -/* At the end of reading dbx symbols, free our tables. */ - -static void -free_header_files () -{ - register int i; - for (i = 0; i < n_header_files; i++) - free (header_files[i].name); - if (header_files) free (header_files); - if (this_object_header_files) - free (this_object_header_files); -} - -/* Called at the start of each object file's symbols. - Clear out the mapping of header file numbers to header files. */ - -static void -new_object_header_files () -{ - /* Leave FILENUM of 0 free for builtin types and this file's types. */ - n_this_object_header_files = 1; - header_file_prev_index = -1; -} - -/* Add header file number I for this object file - at the next successive FILENUM. */ - -static void -add_this_object_header_file (i) - int i; -{ - if (n_this_object_header_files == n_allocated_this_object_header_files) - { - n_allocated_this_object_header_files *= 2; - this_object_header_files - = (int *) xrealloc (this_object_header_files, - n_allocated_this_object_header_files * sizeof (int)); - } - - this_object_header_files[n_this_object_header_files++] = i; -} - -/* Add to this file an "old" header file, one already seen in - a previous object file. NAME is the header file's name. - INSTANCE is its instance code, to select among multiple - symbol tables for the same header file. */ - -static void -add_old_header_file (name, instance) - char *name; - int instance; -{ - register struct header_file *p = header_files; - register int i; - - for (i = 0; i < n_header_files; i++) - if (!strcmp (p[i].name, name) && instance == p[i].instance) - { - add_this_object_header_file (i); - return; - } - error ("Invalid symbol data: \"repeated\" header file that hasn't been seen before, at symtab pos %d.", - symnum); -} - -/* Add to this file a "new" header file: definitions for its types follow. - NAME is the header file's name. - Most often this happens only once for each distinct header file, - but not necessarily. If it happens more than once, INSTANCE has - a different value each time, and references to the header file - use INSTANCE values to select among them. - - dbx output contains "begin" and "end" markers for each new header file, - but at this level we just need to know which files there have been; - so we record the file when its "begin" is seen and ignore the "end". */ - -static void -add_new_header_file (name, instance) - char *name; - int instance; -{ - register int i; - register struct header_file *p = header_files; - header_file_prev_index = -1; - -#if 0 - /* This code was used before I knew about the instance codes. - My first hypothesis is that it is not necessary now - that instance codes are handled. */ - - /* Has this header file a previous definition? - If so, make a new entry anyway so that this use in this source file - gets a separate entry. Later source files get the old entry. - Record here the index of the old entry, so that any type indices - not previously defined can get defined in the old entry as - well as in the new one. */ - - for (i = 0; i < n_header_files; i++) - if (!strcmp (p[i].name, name)) - { - header_file_prev_index = i; - } - -#endif - - /* Make sure there is room for one more header file. */ - - if (n_header_files == n_allocated_header_files) - { - n_allocated_header_files *= 2; - header_files = (struct header_file *) - xrealloc (header_files, - (n_allocated_header_files - * sizeof (struct header_file))); - } - - /* Create an entry for this header file. */ - - i = n_header_files++; - header_files[i].name = savestring (name, strlen(name)); - header_files[i].instance = instance; - header_files[i].length = 10; - header_files[i].vector - = (struct type **) xxmalloc (10 * sizeof (struct type *)); - bzero (header_files[i].vector, 10 * sizeof (struct type *)); - - add_this_object_header_file (i); -} - -/* Look up a dbx type-number pair. Return the address of the slot - where the type for that number-pair is stored. - The number-pair is in TYPENUMS. - - This can be used for finding the type associated with that pair - or for associating a new type with the pair. */ - -static struct type ** -dbx_lookup_type (typenums) - int typenums[2]; -{ - register int filenum = typenums[0], index = typenums[1]; - - if (filenum < 0 || filenum >= n_this_object_header_files) - error ("Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.", - filenum, index, symnum); - - if (filenum == 0) - { - /* Type is defined outside of header files. - Find it in this object file's type vector. */ - if (index >= type_vector_length) - { - type_vector_length *= 2; - type_vector = (struct typevector *) - xrealloc (type_vector, - (sizeof (struct typevector) - + type_vector_length * sizeof (struct type *))); - bzero (&type_vector->type[type_vector_length / 2], - type_vector_length * sizeof (struct type *) / 2); - } - return &type_vector->type[index]; - } - else - { - register int real_filenum = this_object_header_files[filenum]; - register struct header_file *f; - - if (real_filenum >= n_header_files) - abort (); - - f = &header_files[real_filenum]; - - if (index >= f->length) - { - f->length *= 2; - f->vector = (struct type **) - xrealloc (f->vector, f->length * sizeof (struct type *)); - bzero (&f->vector[f->length / 2], - f->length * sizeof (struct type *) / 2); - } - return &f->vector[index]; - } -} - -/* Make sure there is a type allocated for type numbers TYPENUMS - and return the type object. - This can create an empty (zeroed) type object. */ - -static struct type * -dbx_alloc_type (typenums) - int typenums[2]; -{ - register struct type **type_addr = dbx_lookup_type (typenums); - register struct type *type = *type_addr; - - /* If we are referring to a type not known at all yet, - allocate an empty type for it. - We will fill it in later if we find out how. */ - if (type == 0) - { - type = (struct type *) obstack_alloc (symbol_obstack, - sizeof (struct type)); - bzero (type, sizeof (struct type)); - TYPE_VPTR_FIELDNO (type) = -1; - *type_addr = type; - } - return type; -} - -#if 0 -static struct type ** -explicit_lookup_type (real_filenum, index) - int real_filenum, index; -{ - register struct header_file *f = &header_files[real_filenum]; - - if (index >= f->length) - { - f->length *= 2; - f->vector = (struct type **) - xrealloc (f->vector, f->length * sizeof (struct type *)); - bzero (&f->vector[f->length / 2], - f->length * sizeof (struct type *) / 2); - } - return &f->vector[index]; -} -#endif - -/* maintain the lists of symbols and blocks */ - -/* Add a symbol to one of the lists of symbols. */ -static void -add_symbol_to_list (symbol, listhead) - struct symbol *symbol; - struct pending **listhead; -{ - /* We keep PENDINGSIZE symbols in each link of the list. - If we don't have a link with room in it, add a new link. */ - if (*listhead == 0 || (*listhead)->nsyms == PENDINGSIZE) - { - register struct pending *link; - if (free_pendings) - { - link = free_pendings; - free_pendings = link->next; - } - else - link = (struct pending *) xxmalloc (sizeof (struct pending)); - - link->next = *listhead; - *listhead = link; - link->nsyms = 0; - } - - (*listhead)->symbol[(*listhead)->nsyms++] = symbol; -} - -/* At end of reading syms, or in case of quit, - really free as many `struct pending's as we can easily find. */ - -static void -really_free_pendings () -{ - struct pending *next, *next1; - struct pending_block *bnext, *bnext1; - - for (next = free_pendings; next; next = next1) - { - next1 = next->next; - free (next); - } - free_pendings = 0; - - for (bnext = pending_blocks; bnext; bnext = bnext1) - { - bnext1 = bnext->next; - free (bnext); - } - pending_blocks = 0; - - for (next = file_symbols; next; next = next1) - { - next1 = next->next; - free (next); - } - for (next = global_symbols; next; next = next1) - { - next1 = next->next; - free (next); - } -} - -/* Take one of the lists of symbols and make a block from it. - Keep the order the symbols have in the list (reversed from the input file). - Put the block on the list of pending blocks. */ - -static void -finish_block (symbol, listhead, old_blocks, start, end) - struct symbol *symbol; - struct pending **listhead; - struct pending_block *old_blocks; - CORE_ADDR start, end; -{ - register struct pending *next, *next1; - register struct block *block; - register struct pending_block *pblock; - struct pending_block *opblock; - register int i; - - /* Count the length of the list of symbols. */ - - for (next = *listhead, i = 0; next; i += next->nsyms, next = next->next); - - block = (struct block *) obstack_alloc (symbol_obstack, - (sizeof (struct block) - + ((i - 1) - * sizeof (struct symbol *)))); - - /* Copy the symbols into the block. */ - - BLOCK_NSYMS (block) = i; - for (next = *listhead; next; next = next->next) - { - register int j; - for (j = next->nsyms - 1; j >= 0; j--) - BLOCK_SYM (block, --i) = next->symbol[j]; - } - - BLOCK_START (block) = start; - BLOCK_END (block) = end; - BLOCK_SUPERBLOCK (block) = 0; /* Filled in when containing block is made */ - BLOCK_GCC_COMPILED (block) = processing_gcc_compilation; - - /* Put the block in as the value of the symbol that names it. */ - - if (symbol) - { - SYMBOL_BLOCK_VALUE (symbol) = block; - BLOCK_FUNCTION (block) = symbol; - } - else - BLOCK_FUNCTION (block) = 0; - - /* Now "free" the links of the list, and empty the list. */ - - for (next = *listhead; next; next = next1) - { - next1 = next->next; - next->next = free_pendings; - free_pendings = next; - } - *listhead = 0; - - /* Install this block as the superblock - of all blocks made since the start of this scope - that don't have superblocks yet. */ - - opblock = 0; - for (pblock = pending_blocks; pblock != old_blocks; pblock = pblock->next) - { - if (BLOCK_SUPERBLOCK (pblock->block) == 0) - BLOCK_SUPERBLOCK (pblock->block) = block; - opblock = pblock; - } - - /* Record this block on the list of all blocks in the file. - Put it after opblock, or at the beginning if opblock is 0. - This puts the block in the list after all its subblocks. */ - - /* Allocate in the symbol_obstack to save time. - It wastes a little space. */ - pblock = (struct pending_block *) - obstack_alloc (symbol_obstack, - sizeof (struct pending_block)); - pblock->block = block; - if (opblock) - { - pblock->next = opblock->next; - opblock->next = pblock; - } - else - { - pblock->next = pending_blocks; - pending_blocks = pblock; - } -} - -static struct blockvector * -make_blockvector () -{ - register struct pending_block *next, *next1; - register struct blockvector *blockvector; - register int i; - - /* Count the length of the list of blocks. */ - - for (next = pending_blocks, i = 0; next; next = next->next, i++); - - blockvector = (struct blockvector *) - obstack_alloc (symbol_obstack, - (sizeof (struct blockvector) - + (i - 1) * sizeof (struct block *))); - - /* Copy the blocks into the blockvector. - This is done in reverse order, which happens to put - the blocks into the proper order (ascending starting address). - finish_block has hair to insert each block into the list - after its subblocks in order to make sure this is true. */ - - BLOCKVECTOR_NBLOCKS (blockvector) = i; - for (next = pending_blocks; next; next = next->next) - BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; - -#if 0 /* Now we make the links in the obstack, so don't free them. */ - /* Now free the links of the list, and empty the list. */ - - for (next = pending_blocks; next; next = next1) - { - next1 = next->next; - free (next); - } -#endif - pending_blocks = 0; - - return blockvector; -} - -/* Manage the vector of line numbers. */ - -static void -record_line (line, pc) - int line; - CORE_ADDR pc; -{ - struct linetable_entry *e; - /* Ignore the dummy line number in libg.o */ - - if (line == 0xffff) - return; - - /* Make sure line vector is big enough. */ - - if (line_vector_index + 1 >= line_vector_length) - { - line_vector_length *= 2; - line_vector = (struct linetable *) - xrealloc (line_vector, - (sizeof (struct linetable) - + line_vector_length * sizeof (struct linetable_entry))); - current_subfile->line_vector = line_vector; - } - - e = line_vector->item + line_vector_index++; - e->line = line; e->pc = pc; -} - -/* Start a new symtab for a new source file. - This is called when a dbx symbol of type N_SO is seen; - it indicates the start of data for one original source file. */ - -static void -start_symtab (name, start_addr) - char *name; - CORE_ADDR start_addr; -{ - register struct symtab *s; - - last_source_file = name; - last_source_start_addr = start_addr; - file_symbols = 0; - global_symbols = 0; - within_function = 0; - - /* Context stack is initially empty, with room for 10 levels. */ - context_stack - = (struct context_stack *) xxmalloc (10 * sizeof (struct context_stack)); - context_stack_size = 10; - context_stack_depth = 0; - - new_object_header_files (); - - for (s = symseg_chain; s; s = s->next) - if (s->ldsymoff == symnum * sizeof (struct nlist)) - break; - current_symseg = s; - if (s != 0) - return; - - type_vector_length = 160; - type_vector = (struct typevector *) - xxmalloc (sizeof (struct typevector) - + type_vector_length * sizeof (struct type *)); - bzero (type_vector->type, type_vector_length * sizeof (struct type *)); - - /* Initialize the list of sub source files with one entry - for this file (the top-level source file). */ - - subfiles = 0; - current_subfile = 0; - start_subfile (name); - - /* Set default for compiler to pcc; assume that we aren't processing - a gcc compiled file until proved otherwise. */ - - processing_gcc_compilation = 0; -} - -/* Handle an N_SOL symbol, which indicates the start of - code that came from an included (or otherwise merged-in) - source file with a different name. */ - -static void -start_subfile (name) - char *name; -{ - register struct subfile *subfile; - - /* Save the current subfile's line vector data. */ - - if (current_subfile) - { - current_subfile->line_vector_index = line_vector_index; - current_subfile->line_vector_length = line_vector_length; - current_subfile->prev_line_number = prev_line_number; - } - - /* See if this subfile is already known as a subfile of the - current main source file. */ - - for (subfile = subfiles; subfile; subfile = subfile->next) - { - if (!strcmp (subfile->name, name)) - { - line_vector = subfile->line_vector; - line_vector_index = subfile->line_vector_index; - line_vector_length = subfile->line_vector_length; - prev_line_number = subfile->prev_line_number; - current_subfile = subfile; - return; - } - } - - /* This subfile is not known. Add an entry for it. */ - - line_vector_index = 0; - line_vector_length = 1000; - prev_line_number = -2; /* Force first line number to be explicit */ - line_vector = (struct linetable *) - xxmalloc (sizeof (struct linetable) - + line_vector_length * sizeof (struct linetable_entry)); - - /* Make an entry for this subfile in the list of all subfiles - of the current main source file. */ - - subfile = (struct subfile *) xxmalloc (sizeof (struct subfile)); - subfile->next = subfiles; - subfile->name = savestring (name, strlen (name)); - subfile->line_vector = line_vector; - subfiles = subfile; - current_subfile = subfile; -} - -/* Finish the symbol definitions for one main source file, - close off all the lexical contexts for that file - (creating struct block's for them), then make the struct symtab - for that file and put it in the list of all such. - - END_ADDR is the address of the end of the file's text. */ - -static void -end_symtab (end_addr) - CORE_ADDR end_addr; -{ - register struct symtab *symtab; - register struct blockvector *blockvector; - register struct subfile *subfile; - register struct linetable *lv; - struct subfile *nextsub; - - if (current_symseg != 0) - { - last_source_file = 0; - current_symseg = 0; - return; - } - - /* Finish the lexical context of the last function in the file; - pop the context stack. */ - - if (context_stack_depth > 0) - { - register struct context_stack *cstk; - context_stack_depth--; - cstk = &context_stack[context_stack_depth]; - /* Make a block for the local symbols within. */ - finish_block (cstk->name, &local_symbols, cstk->old_blocks, - cstk->start_addr, end_addr); - } - - /* Finish defining all the blocks of this symtab. */ - finish_block (0, &file_symbols, 0, last_source_start_addr, end_addr); - finish_block (0, &global_symbols, 0, last_source_start_addr, end_addr); - blockvector = make_blockvector (); - - current_subfile->line_vector_index = line_vector_index; - - /* Now create the symtab objects proper, one for each subfile. */ - /* (The main file is one of them.) */ - - for (subfile = subfiles; subfile; subfile = nextsub) - { - symtab = (struct symtab *) xxmalloc (sizeof (struct symtab)); - symtab->free_ptr = 0; - - /* Fill in its components. */ - symtab->blockvector = blockvector; - type_vector->length = type_vector_length; - symtab->typevector = type_vector; - symtab->free_code = free_linetable; - if (subfile->next == 0) - symtab->free_ptr = (char *) type_vector; - - symtab->filename = subfile->name; - lv = subfile->line_vector; - lv->nitems = subfile->line_vector_index; - symtab->linetable = (struct linetable *) - xrealloc (lv, (sizeof (struct linetable) - + lv->nitems * sizeof (struct linetable_entry))); - symtab->nlines = 0; - symtab->line_charpos = 0; - - /* Link the new symtab into the list of such. */ - symtab->next = symtab_list; - symtab_list = symtab; - - nextsub = subfile->next; - free (subfile); - } - - type_vector = 0; - type_vector_length = -1; - line_vector = 0; - line_vector_length = -1; - last_source_file = 0; -} - -#ifdef N_BINCL - -/* Handle the N_BINCL and N_EINCL symbol types - that act like N_SOL for switching source files - (different subfiles, as we call them) within one object file, - but using a stack rather than in an arbitrary order. */ - -struct subfile_stack -{ - struct subfile_stack *next; - char *name; - int prev_index; -}; - -struct subfile_stack *subfile_stack; - -static void -push_subfile () -{ - register struct subfile_stack *tem - = (struct subfile_stack *) xxmalloc (sizeof (struct subfile_stack)); - - tem->next = subfile_stack; - subfile_stack = tem; - if (current_subfile == 0 || current_subfile->name == 0) - abort (); - tem->name = current_subfile->name; - tem->prev_index = header_file_prev_index; -} - -static char * -pop_subfile () -{ - register char *name; - register struct subfile_stack *link = subfile_stack; - - if (link == 0) - abort (); - - name = link->name; - subfile_stack = link->next; - header_file_prev_index = link->prev_index; - free (link); - - return name; -} -#endif /* Have N_BINCL */ - -/* Accumulate the misc functions in bunches of 127. - At the end, copy them all into one newly allocated structure. */ - -#define MISC_BUNCH_SIZE 127 - -struct misc_bunch -{ - struct misc_bunch *next; - struct misc_function contents[MISC_BUNCH_SIZE]; -}; - -/* Bunch currently being filled up. - The next field points to chain of filled bunches. */ - -static struct misc_bunch *misc_bunch; - -/* Number of slots filled in current bunch. */ - -static int misc_bunch_index; - -/* Total number of misc functions recorded so far. */ - -static int misc_count; - -static void -init_misc_functions () -{ - misc_count = 0; - misc_bunch = 0; - misc_bunch_index = MISC_BUNCH_SIZE; -} - -static void -record_misc_function (name, address) - char *name; - CORE_ADDR address; -{ - register struct misc_bunch *new; - - if (misc_bunch_index == MISC_BUNCH_SIZE) - { - new = (struct misc_bunch *) xxmalloc (sizeof (struct misc_bunch)); - misc_bunch_index = 0; - new->next = misc_bunch; - misc_bunch = new; - } - misc_bunch->contents[misc_bunch_index].name = name; - misc_bunch->contents[misc_bunch_index].address = address; - misc_bunch_index++; - misc_count++; -} - -static int -compare_misc_functions (fn1, fn2) - struct misc_function *fn1, *fn2; -{ - /* Return a signed result based on unsigned comparisons - so that we sort into unsigned numeric order. */ - if (fn1->address < fn2->address) - return -1; - if (fn1->address > fn2->address) - return 1; - return 0; -} - -static void -discard_misc_bunches () -{ - register struct misc_bunch *next; - - while (misc_bunch) - { - next = misc_bunch->next; - free (misc_bunch); - misc_bunch = next; - } -} - -/* INCLINK nonzero means bunches are from an incrementally-linked file. - Add them to the existing bunches. - Otherwise INCLINK is zero, and we start from scratch. */ -static void -condense_misc_bunches (inclink) - int inclink; -{ - register int i, j; - register struct misc_bunch *bunch; -#ifdef NAMES_HAVE_UNDERSCORE - int offset = 1; -#else - int offset = 0; -#endif - - if (inclink) - { - misc_function_vector - = (struct misc_function *) - xrealloc (misc_function_vector, (misc_count + misc_function_count) - * sizeof (struct misc_function)); - j = misc_function_count; - } - else - { - misc_function_vector - = (struct misc_function *) - xxmalloc (misc_count * sizeof (struct misc_function)); - j = 0; - } - - bunch = misc_bunch; - while (bunch) - { - for (i = 0; i < misc_bunch_index; i++) - { - misc_function_vector[j] = bunch->contents[i]; - misc_function_vector[j].name - = obconcat (misc_function_vector[j].name - + (misc_function_vector[j].name[0] == '_' ? offset : 0), - "", ""); - j++; - } - bunch = bunch->next; - misc_bunch_index = MISC_BUNCH_SIZE; - } - - if (inclink) - misc_function_count += misc_count; - else - misc_function_count = j; - - /* Sort the misc functions by address. */ - - qsort (misc_function_vector, misc_function_count, - sizeof (struct misc_function), - compare_misc_functions); -} - -/* Call sort_syms to sort alphabetically - the symbols of each block of each symtab. */ - -static int -compare_symbols (s1, s2) - struct symbol **s1, **s2; -{ - register int namediff; - - /* Compare the initial characters. */ - namediff = SYMBOL_NAME (*s1)[0] - SYMBOL_NAME (*s2)[0]; - if (namediff != 0) return namediff; - - /* If they match, compare the rest of the names. */ - namediff = strcmp (SYMBOL_NAME (*s1), SYMBOL_NAME (*s2)); - if (namediff != 0) return namediff; - - /* For symbols of the same name, registers should come first. */ - return ((SYMBOL_CLASS (*s2) == LOC_REGISTER) - - (SYMBOL_CLASS (*s1) == LOC_REGISTER)); -} - -static void sort_symtab_syms (); - -static void -sort_syms () -{ - register struct symtab *s; - - for (s = symtab_list; s; s = s->next) - sort_symtab_syms (s); -} - -static void -sort_symtab_syms (s) - register struct symtab *s; -{ - register struct blockvector *bv = BLOCKVECTOR (s); - int nbl = BLOCKVECTOR_NBLOCKS (bv); - int i; - register struct block *b; - - /* Note that in the following sort, we always make sure that - register debug symbol declarations always come before regular - debug symbol declarations (as might happen when parameters are - then put into registers by the compiler). We do this by a - correct compare in compare_symbols, and by the reversal of the - symbols if we don't sort. This works as long as a register debug - symbol always comes after a parameter debug symbol. */ - - /* This is no longer necessary; lookup_block_symbol now always - prefers some other declaration over a parameter declaration. We - still sort the thing (that is necessary), but we don't reverse it - if we shouldn't sort it. */ - - for (i = 0; i < nbl; i++) - { - b = BLOCKVECTOR_BLOCK (bv, i); - if (BLOCK_SHOULD_SORT (b)) - qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b), - sizeof (struct symbol *), compare_symbols); - } -} - - -extern struct symtab *psymtab_to_symtab (); - -/* This is the symbol-file command. Read the file, analyze its symbols, - and add a struct symtab to symtab_list. */ - -void -symbol_file_command (name) - char *name; -{ - register int desc; - DECLARE_FILE_HEADERS; - struct nlist *nlist; - char *stringtab; - long buffer; - register int val; - extern void close (); - struct cleanup *old_chain; - struct symtab *symseg; - struct stat statbuf; - - dont_repeat (); - - if (name == 0) - { - if ((symtab_list || partial_symtab_list) - && !query ("Discard symbol table? ", 0)) - error ("Not confirmed."); - if (symfile) - free (symfile); - symfile = 0; - free_all_symtabs (); - free_all_psymtabs (); - return; - } - - if ((symtab_list || partial_symtab_list) - && !query ("Load new symbol table from \"%s\"? ", name)) - error ("Not confirmed."); - - { - char *absolute_name; - desc = openp (getenv ("PATH"), 1, name, O_RDONLY, 0, &absolute_name); - if (desc < 0) - perror_with_name (name); - else - name = absolute_name; - } - - old_chain = make_cleanup (close, desc); - make_cleanup (free_current_contents, &name); - - READ_FILE_HEADERS (desc, name); - - if (NUMBER_OF_SYMBOLS == 0) - { - if (symfile) - free (symfile); - symfile = 0; - free_all_symtabs (); - free_all_psymtabs (); - printf ("%s has no symbol-table; symbols discarded.\n", name); - fflush (stdout); - do_cleanups (old_chain); - return; - } - - printf ("Reading symbol data from %s...", name); - fflush (stdout); - - /* Now read the string table, all at once. */ - val = lseek (desc, STRING_TABLE_OFFSET, 0); - if (val < 0) - perror_with_name (name); - stat (name, &statbuf); - READ_STRING_TABLE_SIZE (buffer); - if (buffer >= 0 && buffer < statbuf.st_size) - stringtab = (char *) alloca (buffer); - else - stringtab = NULL; - if (stringtab == NULL) - error ("ridiculous string table size: %d bytes", name, buffer); - - bcopy (&buffer, stringtab, sizeof buffer); - val = myread (desc, stringtab + sizeof buffer, buffer - sizeof buffer); - if (val < 0) - perror_with_name (name); - - /* Throw away the old symbol table. */ - - if (symfile) - free (symfile); - symfile = 0; - free_all_symtabs (); - free_all_psymtabs (); - - /* Empty the hash table of global syms looking for values. */ - bzero (global_sym_chain, sizeof global_sym_chain); - -#ifdef READ_GDB_SYMSEGS - /* That puts us at the symsegs. Read them. */ - symseg_chain = read_symsegs (desc, name); - hash_symsegs (); - - /* Free the symtabs made by read_symsegs, but not their contents, - which have been copied into symtabs on symtab_list. */ - for (symseg = symseg_chain; symseg; symseg = symseg->next) - { - int i; - struct sourcevector *sv = (struct sourcevector *) symseg->linetable; - - for (i = 0; i < sv->length; i++) - { - int j; - struct source *source = sv->source[i]; - struct symtab *sp1 - = (struct symtab *) xxmalloc (sizeof (struct symtab)); - - bcopy (symseg, sp1, sizeof (struct symtab)); - sp1->filename = savestring (source->name, strlen (source->name)); - sp1->linetable = &source->contents; - sp1->free_code = free_nothing; - sp1->free_ptr = (i == 0) ? (char *) symseg : 0; - - sp1->next = symtab_list; - symtab_list = sp1; - } - } -#else - /* Where people are using the 4.2 ld program, must not check for - symsegs, because that ld puts randonm garbage at the end of - the output file and that would trigger an error message. */ - symseg_chain = 0; -#endif - - /* Position to read the symbol table. Do not read it all at once. */ - val = lseek (desc, SYMBOL_TABLE_OFFSET, 0); - if (val < 0) - perror_with_name (name); - - /* Don't put these on the cleanup chain; they need to stick around - until the next call to symbol_file_command. *Then* we'll free - them. */ - free_header_files (); - init_header_files (); - - init_misc_functions (); - make_cleanup (discard_misc_bunches, 0); - - free_pendings = 0; - pending_blocks = 0; - file_symbols = 0; - global_symbols = 0; - make_cleanup (really_free_pendings, 0); - - /* Now that the symbol table data of the executable file are all in core, - process them and define symbols accordingly. Closes desc. */ - - read_dbx_symtab (desc, stringtab, NUMBER_OF_SYMBOLS, 0, 0, 0); - - /* Go over the misc functions and install them in vector. */ - - condense_misc_bunches (0); - - /* Don't allow char * to have a typename (else would get caddr_t.) */ - - TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; - - /* Make a default for file to list. */ - - symfile = savestring (name, strlen (name)); - - /* Call to select_source_symtab used to be here; it was using too - much time. I'll make sure that list_sources can handle the lack - of current_source_symtab */ - - do_cleanups (old_chain); /* Descriptor closed here */ - - /* Free the symtabs made by read_symsegs, but not their contents, - which have been copied into symtabs on symtab_list. */ - while (symseg_chain) - { - register struct symtab *s = symseg_chain->next; - free (symseg_chain); - symseg_chain = s; - } - - if (!partial_symtab_list) - printf ("\n(no debugging symbols found)..."); - - printf ("done.\n"); - fflush (stdout); -} - -/* Return name of file symbols were loaded from, or 0 if none.. */ - -char * -get_sym_file () -{ - return symfile; -} - -/* Buffer for reading the symbol table entries. */ -static struct nlist symbuf[4096]; -static int symbuf_idx; -static int symbuf_end; - -/* I/O descriptor for reading the symbol table. */ -static int symtab_input_desc; - -/* The address of the string table - of the object file we are reading (as copied into core). */ -static char *stringtab_global; - -/* Refill the symbol table input buffer - and set the variables that control fetching entries from it. - Reports an error if no data available. - This function can read past the end of the symbol table - (into the string table) but this does no harm. */ - -static int -fill_symbuf () -{ - int nbytes = myread (symtab_input_desc, symbuf, sizeof (symbuf)); - if (nbytes <= 0) - error ("error or end of file reading symbol table"); - symbuf_end = nbytes / sizeof (struct nlist); - symbuf_idx = 0; - return 1; -} - -/* dbx allows the text of a symbol name to be continued into the - next symbol name! When such a continuation is encountered - (a \ at the end of the text of a name) - call this function to get the continuation. */ - -static char * -next_symbol_text () -{ - if (symbuf_idx == symbuf_end) - fill_symbuf (); - symnum++; - return symbuf[symbuf_idx++].n_un.n_strx + stringtab_global; -} - -/* - * Initializes storage for all of the partial symbols that will be - * created by read_dbx_symtab and subsidiaries. - */ -void -init_psymbol_list (total_symbols) - int total_symbols; -{ - /* Current best guess is that there are approximately a twentieth - of the total symbols (in a debugging file) are global or static - oriented symbols */ - global_psymbols_allocated = total_symbols / 10; - static_psymbols_allocated = total_symbols / 10; - next_ps_global = global_psymbols = (struct partial_symbol *) - xmalloc (global_psymbols_allocated * sizeof (struct partial_symbol)); - next_ps_static = static_psymbols = (struct partial_symbol *) - xmalloc (static_psymbols_allocated * sizeof (struct partial_symbol)); -} - -/* - * Initialize the list of bincls to contain none and have some - * allocated. - */ -static void -init_bincl_list (number) - int number; -{ - bincls_allocated = number; - next_bincl = bincl_list = (struct header_file_location *) - xmalloc (bincls_allocated * sizeof(struct header_file_location)); -} - -/* - * Add a bincl to the list. - */ -static void -add_bincl_to_list (pst, name, instance) - struct partial_symtab *pst; - char *name; - int instance; -{ - if (next_bincl >= bincl_list + bincls_allocated) - { - int offset = next_bincl - bincl_list; - bincls_allocated *= 2; - bincl_list = (struct header_file_location *) - xrealloc (bincl_list, - bincls_allocated * sizeof (struct header_file_location)); - next_bincl = bincl_list + offset; - } - next_bincl->pst = pst; - next_bincl->instance = instance; - next_bincl++->name = name; -} - -/* - * Given a name, value pair, find the corresponding - * bincl in the list. Return the partial symtab associated - * with that header_file_location. - */ -struct partial_symtab * -find_corresponding_bincl_psymtab (name, instance) - char *name; - int instance; -{ - struct header_file_location *bincl; - - for (bincl = bincl_list; bincl < next_bincl; bincl++) - if (bincl->instance == instance - && !strcmp (name, bincl->name)) - return bincl->pst; - - return (struct partial_symtab *) 0; -} - -/* - * Free the storage allocated for the bincl list. - */ -static void -free_bincl_list () -{ - free (bincl_list); - bincls_allocated = 0; -} - -static struct partial_symtab *start_psymtab (); -static void add_psymtab_dependency (); -static void end_psymtab(); - -/* Given pointers to an a.out symbol table in core containing dbx - style data, setup partial_symtab's describing each source file for - which debugging information is available. NLISTLEN is the number - of symbols in the symbol table. All symbol names are given as - offsets relative to STRINGTAB. - - I have no idea whether or not this routine should be setup to deal - with inclinks. It seems reasonable to me that they be dealt with - standardly, so I am not going to make a strong effort to deal with - them here. - */ - -static void process_symbol_for_psymtab (); - -static void -read_dbx_symtab (desc, stringtab, nlistlen, inclink, text_addr, text_size) - int desc; - register char *stringtab; - register int nlistlen; - int inclink; - unsigned text_addr; - int text_size; -{ - register char *namestring; - register struct symbol *sym, *prev; - int hash; - int num_object_files = 0; - int past_first_source_file = 0; - struct cleanup *old_chain; - int current_text_start, current_file_symbol_start; - struct pending *global_symbols, *static_symbols; - int nsl; /* Length of namestring, when needed */ - - /* Current partial symtab */ - struct partial_symtab *pst; - - /* List of current psymtab's include files */ - char **psymtab_include_list; - int includes_allocated; - int includes_used; - - /* Index within current psymtab dependency list */ - struct partial_symtab **dependency_list; - int dependencies_used, dependencies_allocated; - - /* Setup a define to deal cleanly with the underscore problem */ - -#ifdef NAMES_HAVE_UNDERSCORE -#define HASH_OFFSET 1 -#else -#define HASH_OFFSET 0 -#endif - - global_symbols = static_symbols = - (struct pending *) 0; - pst = (struct partial_symtab *) 0; - - includes_allocated = 30; - includes_used = 0; - psymtab_include_list = (char **) alloca (includes_allocated * - sizeof (char *)); - - dependencies_allocated = 30; - dependencies_used = 0; - dependency_list = - (struct partial_symtab **) alloca (dependencies_allocated * - sizeof (struct partial_symtab *)); - - old_chain = make_cleanup (free_all_psymtabs, 0); - - /* Init bincl list */ - init_bincl_list (20); - make_cleanup (free_bincl_list, 0); - - /* Setup global partial symbol list */ - init_psymbol_list (nlistlen); - - last_source_file = 0; - -#ifdef END_OF_TEXT_DEFAULT - end_of_text_addr = END_OF_TEXT_DEFAULT; -#endif - - symtab_input_desc = desc; /* This is needed for fill_symbuf below */ - symbuf_end = symbuf_idx = 0; - - for (symnum = 0; symnum < nlistlen; symnum++) - { - struct nlist *bufp; - unsigned char type; - - /* Get the symbol for this run and pull out some info */ - QUIT; /* allow this to be interruptable */ - if (symbuf_idx == symbuf_end) - fill_symbuf (); - bufp = &symbuf[symbuf_idx++]; - type = bufp->n_type; - - /* - * Special cases to speed up readin. - */ - if (type == N_SLINE) continue; - - namestring = bufp->n_un.n_strx ? bufp->n_un.n_strx + stringtab : ""; - - switch (type) - { - /* - * Standard, non-debugger, symbols - */ - - case N_TEXT | N_EXT: - /* Catch etext */ - - if (!strcmp (namestring, "_etext")) - end_of_text_addr = bufp->n_value; - /* Fall through */ - -#ifdef N_NBTEXT - case N_NBTEXT | N_EXT: -#endif -#ifdef N_NBDATA - case N_NBDATA | N_EXT: -#endif -#ifdef N_NBBSS - case N_NBBSS | N_EXT: -#endif - case N_ABS | N_EXT: - case N_DATA | N_EXT: - case N_BSS | N_EXT: - /* Figure out beginning and end of global linker symbol - section and put non-debugger specified symbols on - tmp_symchain */ - - last_global_sym = symnum; - if (!first_global_sym) first_global_sym = symnum; - - record_misc_function (namestring, bufp->n_value); /* Always */ - - continue; - -#ifdef N_NBTEXT - case N_NBTEXT: -#endif - case N_TEXT: - if (!strcmp (namestring + strlen (namestring) - 2, ".o") - || !strncmp (namestring, "-l", 2)) - { - if (num_object_files++ == 1) - first_object_file_end = bufp->n_value; - if (past_first_source_file && pst) - { - end_psymtab (pst, psymtab_include_list, includes_used, - symnum * sizeof (struct nlist), bufp->n_value, - dependency_list, dependencies_used, - next_ps_global, next_ps_static); - pst = (struct partial_symtab *) 0; - includes_used = 0; - dependencies_used = 0; - } - else - past_first_source_file = 1; - } - continue; - - case N_UNDF: - case N_UNDF | N_EXT: - case N_ABS: - case N_DATA: - case N_BSS: -#ifdef N_NBDATA - case N_NBDATA: -#endif -#ifdef N_NBBSS - case N_NBBSS: -#endif - case N_FN: - /* Keep going . . .*/ - - /* - * Special symbol types for GNU - */ -#ifdef N_INDR - case N_INDR: - case N_INDR | N_EXT: -#endif -#ifdef N_SETA - case N_SETA: - case N_SETA | N_EXT: - case N_SETT: - case N_SETT | N_EXT: - case N_SETD: - case N_SETD | N_EXT: - case N_SETB: - case N_SETB | N_EXT: - case N_SETV: - case N_SETV | N_EXT: -#endif - continue; - - /* - * Debugger symbols - */ - - case N_SO: - /* End the current partial symtab and start a new one */ - - if (past_first_source_file && pst) - { - end_psymtab (pst, psymtab_include_list, includes_used, - symnum * sizeof (struct nlist), bufp->n_value, - dependency_list, dependencies_used, - next_ps_global, next_ps_static); - pst = (struct partial_symtab *) 0; - includes_used = 0; - dependencies_used = 0; - } - else - past_first_source_file = 1; - - pst = start_psymtab (namestring, bufp->n_value, - symnum * sizeof (struct nlist), - next_ps_global, next_ps_static); - - continue; - -#ifdef N_BINCL - case N_BINCL: - /* Add this bincl to the bincl_list for future EXCLs. No - need to save the string; it'll be around until - read_dbx_symtab function return */ - add_bincl_to_list (pst, namestring, bufp->n_value); - - /* Fall through */ -#endif - - case N_SOL: - /* Mark down an include file in the current psymtab */ - - psymtab_include_list[includes_used++] = namestring; - if (includes_used >= includes_allocated) - { - char **orig = psymtab_include_list; - - psymtab_include_list = (char **) - alloca ((includes_allocated *= 2) * - sizeof (char *)); - bcopy (orig, psymtab_include_list, - includes_used * sizeof (char *)); -#ifdef DEBUG_INFO - fprintf (stderr, "Had to realloc includes. New size: %d\n", - includes_allocated); -#endif - } - continue; - - case N_FUN: - case N_SSYM: - case N_GSYM: - case N_LSYM: - case N_STSYM: - case N_LCSYM: - case N_ENTRY: -#ifdef N_MAIN - case N_MAIN: -#endif -#ifdef N_BSLINE - case N_BSLINE: -#endif - case N_PC: -#ifdef N_M2C - case N_M2C: - case N_SCOPE: -#endif - /* Process a symbol as appropriate for the type (this - information is contained in the name of the symbol) */ - - if (namestring[0] != '\0') -#if 1 - process_symbol_for_psymtab (namestring); -#else - process_symbol_for_psymtab (namestring, tmp_symchain); -#endif - continue; - -#ifdef N_BINCL - case N_EXCL: - /* Find the corresponding bincl and mark that psymtab on the - psymtab dependency list */ - { - struct partial_symtab *needed_pst = - find_corresponding_bincl_psymtab (namestring, bufp->n_value); - - /* If this include file was defined earlier in this file, - leave it alone. */ - if (needed_pst == pst) continue; - - if (needed_pst) - { - int i; - int found = 0; - - for (i = 0; i < dependencies_used; i++) - if (dependency_list[i] == needed_pst) - { - found = 1; - break; - } - - /* If it's already in the list, skip the rest. */ - if (found) continue; - - dependency_list[dependencies_used++] = needed_pst; - if (dependencies_used >= dependencies_allocated) - { - struct partial_symtab **orig = dependency_list; - dependency_list = - (struct partial_symtab **) - alloca ((dependencies_allocated *= 2) - * sizeof (struct partial_symtab *)); - bcopy (orig, dependency_list, - (dependencies_used - * sizeof (struct partial_symtab *))); -#ifdef DEBUG_INFO - fprintf (stderr, "Had to reallocate dependency list.\n"); - fprintf (stderr, "New dependencies allocated: %d\n", - dependencies_allocated); -#endif - } - } - else - error ("Invalid symbol data: \"repeated\" header file not previously seen, at symtab pos %d.", - symnum); - } - continue; - - case N_EINCL: -#endif -#ifdef N_DSLINE - case N_DSLINE: -#endif - case N_LENG: - case N_BCOMM: - case N_ECOMM: - case N_ECOML: - case N_FNAME: - case N_SLINE: - case N_RSYM: - case N_PSYM: - case N_LBRAC: - case N_RBRAC: - /* These symbols aren't interesting; don't worry about them */ - - continue; - - default: - /* If we haven't found it yet, we've got problems */ - - if (IGNORE_SYMBOL (type)) - continue; - - fatal ("Bad symbol type 0x%x encountered in gdb scan", type); - } - } - - if (last_source_file) - { - end_psymtab (pst, psymtab_include_list, includes_used, - symnum * sizeof (struct nlist), end_of_text_addr, - dependency_list, dependencies_used, - next_ps_global, next_ps_static); - includes_used = 0; - dependencies_used = 0; - pst = (struct partial_symtab *) 0; - } - - free_bincl_list (); - discard_cleanups (old_chain); -} - -/* - * Take a single symbol (name: NAME) and process it (add it to the - * app psymbol list or not). - */ -static void -process_symbol_for_psymtab (name) - char *name; -{ - char *p = (char *) index(name, ':') + 1; - int deftype; - struct partial_symbol *sym; - enum { T_IGNORE, T_STATIC, T_GLOBAL } symbol_type; - enum namespace ns = UNDEF_NAMESPACE; - enum address_class class; - int hash; - - if (p == (char *) 0x1) - /* No ":" ; I guess it's not a debuggging symbol */ - return; - - if ((*p >= '0' && *p <= '9') || *p == '(') - deftype = 'l'; - else - deftype = *p; - - /* Figure out how to handle this symbol */ - switch (deftype) - { - /* T is a struct/union/enum, t is a typedef */ - case 'T': - symbol_type = T_STATIC; - ns = STRUCT_NAMESPACE; - class = LOC_TYPEDEF; - break; - case 't': - symbol_type = T_STATIC; - ns = VAR_NAMESPACE; - class = LOC_TYPEDEF; - break; - case 'c': - symbol_type = T_STATIC; - ns = VAR_NAMESPACE; - class = LOC_CONST; - break; - case 'S': - symbol_type = T_STATIC; - ns = VAR_NAMESPACE; - class = LOC_STATIC; - break; - case 'f': - symbol_type = T_STATIC; - ns = VAR_NAMESPACE; - class = LOC_BLOCK; - break; - case 'F': - symbol_type = T_GLOBAL; - ns = VAR_NAMESPACE; - class = LOC_BLOCK; - break; - case 'G': - symbol_type = T_GLOBAL; - ns = VAR_NAMESPACE; - class = LOC_STATIC; - break; - default: - return; - } - - /* Create the symbol and store it on the list */ - /* There's a better algorithm possible for the allocation; figure - out how far through the symbol table we are and do a reestimate */ - if (symbol_type == T_STATIC) - { - if (next_ps_static >= static_psymbols + static_psymbols_allocated) - { - static_psymbols = (struct partial_symbol *) - xrealloc (static_psymbols, - (static_psymbols_allocated * 2 - * sizeof (struct partial_symbol))); - /* Next assumes we only went one over. Should be good if - program works correctly */ - next_ps_static = static_psymbols + static_psymbols_allocated; - static_psymbols_allocated *= 2; -#ifdef DEBUGINFO - fprintf(stderr, "debuginfo: Had to realloc statics\n"); -#endif - } - sym = next_ps_static++; - } - else - { - if (next_ps_global >= global_psymbols + global_psymbols_allocated) - { - global_psymbols = (struct partial_symbol *) - xrealloc (global_psymbols, - (global_psymbols_allocated * 2 - * sizeof (struct partial_symbol))); - next_ps_global = global_psymbols + global_psymbols_allocated; - global_psymbols_allocated *= 2; -#ifdef DEBUGINFO - fprintf(stderr, "debuginfo: Had to realloc globals\n"); -#endif - } - sym = next_ps_global++; - } - - SYMBOL_NAME(sym) = (char *) obstack_alloc (psymbol_obstack, - p - name); - strncpy(SYMBOL_NAME(sym), name, p - name - 1); - SYMBOL_NAME(sym)[p - name - 1] = '\0'; - SYMBOL_NAMESPACE(sym) = ns; - SYMBOL_CLASS(sym) = class; -} -#undef HASH_OFFSET - -/* - * Allocate and partially fill a partial symtab. It will be - * completely filled at the end of the symbol list. - */ -static struct partial_symtab * -start_psymtab (filename, textlow, ldsymoff, global_syms, static_syms) - char *filename; - int textlow; - int ldsymoff; - struct partial_symbol *global_syms; - struct partial_symbol *static_syms; -{ - struct partial_symtab *result = - (struct partial_symtab *) obstack_alloc (psymbol_obstack, - sizeof (struct partial_symtab)); - - result->filename = - (char *) obstack_alloc (psymbol_obstack, - strlen (filename) + 1); - strcpy (result->filename, filename); - - result->textlow = textlow; - result->ldsymoff = ldsymoff; - - result->readin = 0; - - result->globals_offset = global_syms - global_psymbols; - result->statics_offset = static_syms - static_psymbols; - - result->n_global_syms = 0; - result->n_static_syms = 0; - - return result; -} - -static int -compare_psymbols (s1, s2) - register struct partial_symbol *s1, *s2; -{ - register char - *st1 = SYMBOL_NAME (s1), - *st2 = SYMBOL_NAME (s2); - - return (st1[0] - st2[0] ? st1[0] - st2[0] : - strcmp (st1 + 1, st2 + 1)); -} - - -/* Close off the current usage of a partial_symbol table entry. This - involves setting the correct number of includes (with a realloc), - setting the high text mark, setting the symbol length in the - executable, and setting the length of the global and static lists - of psymbols. - - The global symbols and static symbols are then seperately sorted. - - Then the partial symtab is put on the global list. - *** List variables and peculiarities of same. *** - */ -static void -end_psymtab (pst, include_list, num_includes, capping_symbol_offset, - capping_text, dependency_list, number_dependencies, - capping_global, capping_static) - struct partial_symtab *pst; - char **include_list; - int num_includes; - int capping_symbol_offset; - int capping_text; - struct partial_symtab **dependency_list; - int number_dependencies; - struct partial_symbol *capping_global, *capping_static; -{ - int i; - - pst->ldsymlen = capping_symbol_offset - pst->ldsymoff; - pst->texthigh = capping_text; - - pst->n_global_syms = - capping_global - (global_psymbols + pst->globals_offset); - pst->n_static_syms = - capping_static - (static_psymbols + pst->statics_offset); - - pst->dependencies = (struct partial_symtab **) - obstack_alloc (psymbol_obstack, - number_dependencies * sizeof (struct partial_symtab *)); - bcopy (dependency_list, pst->dependencies, - number_dependencies * sizeof (struct partial_symtab *)); - pst->number_of_dependencies = number_dependencies; - - for (i = 0; i < num_includes; i++) - { - /* Eventually, put this on obstack */ - struct partial_symtab *subpst = - (struct partial_symtab *) - obstack_alloc (psymbol_obstack, - sizeof (struct partial_symtab)); - - subpst->filename = - (char *) obstack_alloc (psymbol_obstack, - strlen (include_list[i]) + 1); - strcpy (subpst->filename, include_list[i]); - - subpst->ldsymoff = - subpst->ldsymlen = - subpst->textlow = - subpst->texthigh = 0; - subpst->readin = 0; - - subpst->dependencies = (struct partial_symtab **) - obstack_alloc (psymbol_obstack, - sizeof (struct partial_symtab *)); - subpst->dependencies[0] = pst; - subpst->number_of_dependencies = 1; - - subpst->globals_offset = - subpst->n_global_syms = - subpst->statics_offset = - subpst->n_static_syms = 0; - - subpst->next = partial_symtab_list; - partial_symtab_list = subpst; - } - - /* Sort the global list; don't sort the static list */ - qsort (global_psymbols + pst->globals_offset, pst->n_global_syms, - sizeof (struct partial_symbol), compare_psymbols); - - /* Put the psymtab on the psymtab list */ - pst->next = partial_symtab_list; - partial_symtab_list = pst; -} - -/* - * Read in all of the symbols for a given psymtab for real. Return - * the value of the symtab you create. Do not free the storage - * allocated to the psymtab; it may have pointers to it. - */ -static void scan_file_globals (); -static void read_ofile_symtab (); - -struct symtab * -psymtab_to_symtab(pst) - struct partial_symtab *pst; -{ - int desc; - DECLARE_FILE_HEADERS; - char *stringtab; - struct partial_symtab **list_patch; - int stsize, val; - struct stat statbuf; - struct cleanup *old_chain; - extern void close (); - int i; - struct symtab *result; - char *name = symfile; /* Some of the macros require the */ - /* variable "name" to be defined in */ - /* the context in which they execute */ - /* (Yech!) */ - - if (!pst) - return 0; - - if (pst->readin) - { - fprintf (stderr, "Psymtab for %s already read in. Shouldn't happen.\n", - pst->filename); - return 0; - } - - if (!name) - error("No symbol file currently specified; use command symbol-file"); - - /* Read in all partial symbtabs on which this one is dependent */ - for (i = 0; i < pst->number_of_dependencies; i++) - if (!pst->dependencies[i]->readin) - psymtab_to_symtab (pst->dependencies[i]); - - if (pst->ldsymlen) /* Otherwise it's a dummy */ - { - /* Open symbol file and read in string table */ - stat (name, &statbuf); - desc = open(name, O_RDONLY, 0); /* symbol_file_command - guarrantees that the symbol file name - will be absolute, so there is no - need for openp */ - - old_chain = make_cleanup (close, desc); - - if (desc < 0) - error("Symbol file not readable"); - - READ_FILE_HEADERS (desc, name); - - /* Read in the string table */ - lseek (desc, STRING_TABLE_OFFSET, L_SET); - READ_STRING_TABLE_SIZE (stsize); - if (stsize >= 0 && stsize < statbuf.st_size) - stringtab = (char *) alloca (stsize); - else - stringtab = NULL; - if (stringtab == NULL) - error ("ridiculous string table size: %d bytes", name, stsize); - - bcopy (&stsize, stringtab, sizeof stsize); - val = myread (desc, stringtab + sizeof stsize, stsize - sizeof stsize); - if (val < 0) - perror_with_name (name); - - /* Init stuff necessary for reading in symbols */ - free_pendings = 0; - pending_blocks = 0; - file_symbols = 0; - global_symbols = 0; - make_cleanup (really_free_pendings, 0); - - /* Read in this files symbols */ - lseek (desc, SYMBOL_TABLE_OFFSET, L_SET); - read_ofile_symtab (desc, stringtab, pst->ldsymoff, - pst->ldsymlen, pst->textlow, - pst->texthigh - pst->textlow, 0); - sort_symtab_syms (symtab_list); /* At beginning since just added */ - - /* Match with global symbols */ - lseek (desc, SYMBOL_TABLE_OFFSET, L_SET); - scan_file_globals (desc, stringtab, - first_global_sym * sizeof(struct nlist), - last_global_sym - first_global_sym + 1); - - do_cleanups (old_chain); - } - - /* Find pst in list, prune it, and free it's storage */ - for (list_patch = &partial_symtab_list; - *list_patch && *list_patch != pst; - list_patch = &((*list_patch)->next)) - ; - - if (!(*list_patch)) /* pst not in list. Don't worry about it? */ - fatal ("internal: psymtab_to_symtab called with non-listed pst"); - - *list_patch = (*list_patch)->next; /* Prune */ - - pst->readin = 1; /* Mark as read in */ - - /* It's the last one if we actually read something in */ - if (pst->ldsymlen) - return symtab_list; - else - /* Search through list for correct name. */ - for (result = symtab_list; result; result = result->next) - if (!strcmp (result->filename, pst->filename)) - return result; - - return 0; -} - -/* - * Scan through all of the global symbols defined in the object file, - * assigning values to the debugging symbols that need to be assigned - * to. - * - * DESC is the file descriptor of the symbol file, with the seek - * pointer pointing at the beginning of the symbol table. - * STRINGTAB is the file's string table, already read in. - * OFFSET is the offset (in bytes) of the beginning of the global - * symbols from the beginning of the symbol table. - * NUMSYMS is the number of symbols that have to be checked. - */ -static void -scan_file_globals (desc, stringtab, offset, numsyms) - int desc; - char *stringtab; - int offset; - int numsyms; -{ - int hash; - - lseek(desc, offset, L_INCR); - symtab_input_desc = desc; - symbuf_end = symbuf_idx = 0; - - for (symnum = 0; symnum < numsyms; symnum++) - { - struct nlist *bufp; - unsigned char type; - char *namestring; - - QUIT; - if (symbuf_idx == symbuf_end) - fill_symbuf (); - - bufp = &symbuf[symbuf_idx++]; - type = bufp->n_type; - - if (type & N_EXT && type != N_EXT) - { - struct symbol *sym, *prev; - - namestring = bufp->n_un.n_strx ? - bufp->n_un.n_strx + stringtab : ""; - prev = (struct symbol *) 0; - - /* Get the hash index and check all the symbols - under that hash index. */ - -#ifdef NAMES_HAVE_UNDERSCORE - hash = hashname (namestring + 1); -#else /* ! NAMES_HAVE_UNDERSCORE */ - hash = hashname (namestring); -#endif /* ! NAMES_HAVE_UNDERSCORE */ - for (sym = global_sym_chain[hash]; sym;) - { - if ( -#ifdef NAMES_HAVE_UNDERSCORE - *namestring == '_' - && namestring[1] == SYMBOL_NAME (sym)[0] - && !strcmp(namestring + 2, SYMBOL_NAME (sym) + 1) -#else /* ! NAMES_HAVE_UNDERSCORE */ - namestring[0] == SYMBOL_NAME (sym) [0] - && !strcmp(namestring + 1, SYMBOL_NAME(sym) + 1) -#endif /* ! NAMES_HAVE_UNDERSCORE */ - ) - { - /* Splice this symbol out of the hash chain and - assign the value we have to it. */ - if (prev) - SYMBOL_VALUE (prev) = SYMBOL_VALUE (sym); - else - global_sym_chain[hash] - = (struct symbol *) SYMBOL_VALUE (sym); - SYMBOL_VALUE (sym) = bufp->n_value; - if (prev) - sym = (struct symbol *) SYMBOL_VALUE (prev); - else - sym = global_sym_chain[hash]; - break; /* Only one reference per file */ - } - else - { - prev = sym; - sym = (struct symbol *) SYMBOL_VALUE (sym); - } - } - } - } - /* There shouldn't be anything left on the hash list at this point. - If there is, we have done something wrong. For right now it's - worth checking, until I get the bugs out. */ - /* Sigh. Unfortunately, the above is not true. If an extern - variable is mentioned in an include file (or a program) and the - variable is never either referenced or defined, there will be a - debugger symbol with no "real" symbol. Oh well. */ -} - -/* - * Read in a defined section of a specific object file's symbols. - * - * DESC is the file descriptor for the file, positioned at the - * beginning of the symtab - * STRINGTAB is a pointer to the files string - * table, already read in - * SYM_OFFSET is the offset within the file of - * the beginning of the symbols we want to read, NUM_SUMBOLS is the - * number of symbols to read - * TEXT_OFFSET is the offset to be added to - * all values of symbols coming in and - * TEXT_SIZE is the size of the text segment read in. - * OFFSET is a flag which indicates that the value of all of the - * symbols should be offset by TEXT_OFFSET (for the purposes of - * incremental linking). - */ - -static void -read_ofile_symtab (desc, stringtab, sym_offset, - sym_size, text_offset, text_size, offset) - int desc; - register char *stringtab; - int sym_offset; - int sym_size; - int text_offset; - int text_size; - int offset; -{ - register char *namestring; - register struct symbol *sym, *prev; - int hash; - struct cleanup *old_chain; - struct nlist *bufp; - unsigned char type; -#ifdef N_BINCL - subfile_stack = 0; -#endif - - stringtab_global = stringtab; - last_source_file = 0; - - symtab_input_desc = desc; - symbuf_end = symbuf_idx = 0; - lseek(desc, sym_offset, L_INCR); - - fill_symbuf(); - bufp = &symbuf[symbuf_idx]; - if ((unsigned char) bufp->n_type != N_SO) - fatal("First symbol in segment of executable not a source symbol"); - - for (symnum = 0; - symnum < sym_size / sizeof(struct nlist); - symnum++) - { - QUIT; /* Allow this to be interruptable */ - if (symbuf_idx == symbuf_end) - fill_symbuf(); - bufp = &symbuf[symbuf_idx++]; - type = bufp->n_type; - - if (offset && - (type == N_TEXT || type == N_DATA || type == N_BSS)) - bufp->n_value += text_offset; - - namestring = bufp->n_un.n_strx ? bufp->n_un.n_strx + stringtab : ""; - - if (type & N_STAB) - process_one_symbol(type, bufp->n_desc, - bufp->n_value, namestring); - /* We skip checking for a new .o or -l file; that should never - happen in this routine. */ - else if (type == N_TEXT - && !strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL)) - processing_gcc_compilation = 1; - else if (type & N_EXT || type == N_TEXT -#ifdef N_NBTEXT - || type == N_NBTEXT -#endif - ) - /* Global symbol: see if we came across a dbx defintion for - a corresponding symbol. If so, store the value. Remove - syms from the chain when their values are stored, but - search the whole chain, as there may be several syms from - different files with the same name. */ - /* This is probably not true. Since the files will be read - in one at a time, each reference to a global symbol will - be satisfied in each file as it appears. So we skip this - section. */ - &stringtab_global; /* For debugger; am I right? */ - } - end_symtab (text_offset + text_size); -} - -static int -hashname (name) - char *name; -{ - register char *p = name; - register int total = p[0]; - register int c; - - c = p[1]; - total += c << 2; - if (c) - { - c = p[2]; - total += c << 4; - if (c) - total += p[3] << 6; - } - - /* Ensure result is positive. */ - if (total < 0) total += (1000 << 6); - return total % HASHSIZE; -} - -/* Put all appropriate global symbols in the symseg data - onto the hash chains so that their addresses will be stored - when seen later in loader global symbols. */ - -static void -hash_symsegs () -{ - /* Look at each symbol in each block in each symseg symtab. */ - struct symtab *s; - for (s = symseg_chain; s; s = s->next) - { - register int n; - for (n = BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (s)) - 1; n >= 0; n--) - { - register struct block *b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), n); - register int i; - for (i = BLOCK_NSYMS (b) - 1; i >= 0; i--) - { - register struct symbol *sym = BLOCK_SYM (b, i); - - /* Put the symbol on a chain if its value is an address - that is figured out by the loader. */ - - if (SYMBOL_CLASS (sym) == LOC_EXTERNAL) - { - register int hash = hashname (SYMBOL_NAME (sym)); - SYMBOL_VALUE (sym) = (int) global_sym_chain[hash]; - global_sym_chain[hash] = sym; - SYMBOL_CLASS (sym) = LOC_STATIC; - } - } - } - } -} - -static void -process_one_symbol (type, desc, value, name) - int type, desc; - CORE_ADDR value; - char *name; -{ - register struct context_stack *new; - - /* Something is wrong if we see real data before - seeing a source file name. */ - - if (last_source_file == 0 && type != N_SO) - { - /* Currently this ignores N_ENTRY on Gould machines, N_NSYM on machines - where that code is defined, and all symbols on the Convex. */ - if (IGNORE_SYMBOL (type)) - return; - - error ("Invalid symbol data: does not start by identifying a source file."); - } - - switch (type) - { - case N_FUN: - case N_FNAME: - /* Either of these types of symbols indicates the start of - a new function. We must process its "name" normally for dbx, - but also record the start of a new lexical context, and possibly - also the end of the lexical context for the previous function. */ - - within_function = 1; - if (context_stack_depth > 0) - { - new = &context_stack[--context_stack_depth]; - /* Make a block for the local symbols within. */ - finish_block (new->name, &local_symbols, new->old_blocks, - new->start_addr, value); - } - /* Stack must be empty now. */ - if (context_stack_depth != 0) - error ("Invalid symbol data: unmatched N_LBRAC before symtab pos %d.", - symnum); - - new = &context_stack[context_stack_depth++]; - new->old_blocks = pending_blocks; - new->start_addr = value; - new->name = define_symbol (value, name, desc); - local_symbols = 0; - break; - - case N_LBRAC: - /* This "symbol" just indicates the start of an inner lexical - context within a function. */ - - if (context_stack_depth == context_stack_size) - { - context_stack_size *= 2; - context_stack = (struct context_stack *) - xrealloc (context_stack, - (context_stack_size - * sizeof (struct context_stack))); - } - - new = &context_stack[context_stack_depth++]; - new->depth = desc; - new->locals = local_symbols; - new->old_blocks = pending_blocks; - new->start_addr = value; - new->name = 0; - local_symbols = 0; - break; - - case N_RBRAC: - /* This "symbol" just indicates the end of an inner lexical - context that was started with N_RBRAC. */ - new = &context_stack[--context_stack_depth]; - if (desc != new->depth) - error ("Invalid symbol data: N_LBRAC/N_RBRAC symbol mismatch, symtab pos %d.", symnum); - local_symbols = new->locals; - - /* If this is not the outermost LBRAC...RBRAC pair in the - function, its local symbols preceded it, and are the ones - just recovered from the context stack. Defined the block for them. - - If this is the outermost LBRAC...RBRAC pair, there is no - need to do anything; leave the symbols that preceded it - to be attached to the function's own block. */ - if (local_symbols && context_stack_depth > 1) - { - /* Muzzle a compiler bug that makes end > start. */ - if (new->start_addr > value) - new->start_addr = value; - /* Make a block for the local symbols within. */ - finish_block (0, &local_symbols, new->old_blocks, - new->start_addr + last_source_start_addr, - value + last_source_start_addr); - } - break; - - case N_FN: - /* This kind of symbol supposedly indicates the start - of an object file. In fact this type does not appear. */ - break; - - case N_SO: - /* This type of symbol indicates the start of data - for one source file. - Finish the symbol table of the previous source file - (if any) and start accumulating a new symbol table. */ - if (last_source_file) - end_symtab (value); - start_symtab (name, value); - break; - - case N_SOL: - /* This type of symbol indicates the start of data for - a sub-source-file, one whose contents were copied or - included in the compilation of the main source file - (whose name was given in the N_SO symbol.) */ - start_subfile (name); - break; - -#ifdef N_BINCL - case N_BINCL: - push_subfile (); - add_new_header_file (name, value); - start_subfile (name); - break; - - case N_EINCL: - start_subfile (pop_subfile ()); - break; - - case N_EXCL: - add_old_header_file (name, value); - break; -#endif /* have N_BINCL */ - - case N_SLINE: - /* This type of "symbol" really just records - one line-number -- core-address correspondence. - Enter it in the line list for this symbol table. */ - record_line (desc, value); - break; - - case N_BCOMM: - case N_ECOMM: - case N_ECOML: - case N_LENG: - break; - - default: - if (name) - define_symbol (value, name, desc); - } -} - -/* This function was added for C++ functionality. I presume that it - condenses the bunches formed by reading in an additional .o file - (incremental linking). */ - -static void -condense_addl_misc_bunches () -{ - register int i, j; - register struct misc_bunch *bunch; -#ifdef NAMES_HAVE_UNDERSCORE - int offset = 1; -#else - int offset = 0; -#endif - - misc_function_vector - = (struct misc_function *) xrealloc (misc_function_vector, - (misc_count + misc_function_count) * sizeof (struct misc_function)); - - j = misc_function_count; - bunch = misc_bunch; - while (bunch) - { - for (i = 0; i < misc_bunch_index; i++) - { - misc_function_vector[j] = bunch->contents[i]; - misc_function_vector[j].name - = concat (misc_function_vector[j].name - + (misc_function_vector[j].name[0] == '_' ? offset : 0), - "", ""); - j++; - } - bunch = bunch->next; - misc_bunch_index = MISC_BUNCH_SIZE; - } - - misc_function_count += misc_count; - - /* Sort the misc functions by address. */ - - qsort (misc_function_vector, misc_function_count, - sizeof (struct misc_function), compare_misc_functions); -} - - -/* Read in another .o file and create a symtab entry for it.*/ - -static void -read_addl_syms (desc, stringtab, nlistlen, text_addr, text_size) - int desc; - register char *stringtab; - register int nlistlen; - unsigned text_addr; - int text_size; -{ - FILE *stream = fdopen (desc, "r"); - register char *namestring; - register struct symbol *sym, *prev; - int hash; - int num_object_files = 0; - -#ifdef N_BINCL - subfile_stack = 0; -#endif - - last_source_file = 0; - bzero (global_sym_chain, sizeof global_sym_chain); - symtab_input_desc = desc; - stringtab_global = stringtab; - fill_symbuf (); - - for (symnum = 0; symnum < nlistlen; symnum++) - { - struct nlist *bufp; - unsigned char type; - - QUIT; /* allow this to be interruptable */ - if (symbuf_idx == symbuf_end) - fill_symbuf (); - bufp = &symbuf[symbuf_idx++]; - type = bufp->n_type & N_TYPE; - namestring = bufp->n_un.n_strx ? bufp->n_un.n_strx + stringtab : ""; - - if( (type == N_TEXT) || (type == N_DATA) || (type == N_BSS) ) - { - /* Relocate this file's symbol table information - to the address it has been loaded into. */ - bufp->n_value += text_addr; - } - - type = bufp->n_type; - - if (type & N_STAB) - process_one_symbol (type, bufp->n_desc, - bufp->n_value, namestring); - /* A static text symbol whose name ends in ".o" - can only mean the start of another object file. - So end the symtab of the source file we have been processing. - This is how we avoid counting the libraries as part - or the last source file. - Also this way we find end of first object file (crt0). */ - else if ((type == N_TEXT -#ifdef N_NBTEXT - || type == N_NBTEXT -#endif - ) - && (!strcmp (namestring + strlen (namestring) - 2, ".o")) - || ! strcmp (namestring, "-l", 2)) - { - if (num_object_files++ == 1) - first_object_file_end = bufp->n_value; - if (last_source_file) - end_symtab (bufp->n_value); - } - else if (type & N_EXT || type == N_TEXT -#ifdef N_NBTEXT - || type == N_NBTEXT -#endif - ) - { - int used_up = 0; - - /* Record the location of _etext. */ - if (type == (N_TEXT | N_EXT) - && !strcmp (namestring, "_etext")) - end_of_text_addr = bufp->n_value; - - /* Global symbol: see if we came across a dbx definition - for a corresponding symbol. If so, store the value. - Remove syms from the chain when their values are stored, - but search the whole chain, as there may be several syms - from different files with the same name. */ - if (type & N_EXT) - { - prev = 0; -#ifdef NAMES_HAVE_UNDERSCORE - hash = hashname (namestring + 1); -#else /* not NAMES_HAVE_UNDERSCORE */ - hash = hashname (namestring); -#endif /* not NAMES_HAVE_UNDERSCORE */ - for (sym = global_sym_chain[hash]; - sym;) - { - if ( -#ifdef NAMES_HAVE_UNDERSCORE - *namestring == '_' - && namestring[1] == SYMBOL_NAME (sym)[0] - && - !strcmp (namestring + 2, SYMBOL_NAME (sym) + 1) -#else /* NAMES_HAVE_UNDERSCORE */ - namestring[0] == SYMBOL_NAME (sym)[0] - && - !strcmp (namestring + 1, SYMBOL_NAME (sym) + 1) -#endif /* NAMES_HAVE_UNDERSCORE */ - ) - { - if (prev) - SYMBOL_VALUE (prev) = SYMBOL_VALUE (sym); - else - global_sym_chain[hash] - = (struct symbol *) SYMBOL_VALUE (sym); - SYMBOL_VALUE (sym) = bufp->n_value; - if (prev) - sym = (struct symbol *) SYMBOL_VALUE (prev); - else - sym = global_sym_chain[hash]; - - used_up = 1; - } - else - { - prev = sym; - sym = (struct symbol *) SYMBOL_VALUE (sym); - } - } - } - - /* Defined global or text symbol: record as a misc function - if it didn't give its address to a debugger symbol above. */ - if (type <= (N_TYPE | N_EXT) - && type != N_EXT - && ! used_up) - record_misc_function (namestring, bufp->n_value); - } - } - - if (last_source_file) - end_symtab (text_addr + text_size); - - fclose (stream); -} - -/* C++: - This function allows the addition of incrementally linked object files. - Since this has a fair amount of code in common with symbol_file_command, - it might be worthwhile to consolidate things, as was done with - read_dbx_symtab and condense_misc_bunches. */ - -void -add_file_command (arg_string) - char* arg_string; -{ - register int desc; - DECLARE_FILE_HEADERS; - struct nlist *nlist; - char *stringtab; - long buffer; - register int val; - extern void close (); - struct cleanup *old_chain; - struct symtab *symseg; - struct stat statbuf; - char *name; - unsigned text_addr; - - if (arg_string == 0) - error ("add-file takes a file name and an address"); - - for( ; *arg_string == ' '; arg_string++ ); - name = arg_string; - for( ; *arg_string && *arg_string != ' ' ; arg_string++ ); - *arg_string++ = (char) 0; - - if (name[0] == 0) - error ("add-file takes a file name and an address"); - - text_addr = parse_and_eval_address (arg_string); - - dont_repeat (); - - if (!query ("add symbol table from filename \"%s\" at text_addr = 0x%x\n", - name, text_addr)) - error ("Not confirmed."); - - desc = open (name, O_RDONLY); - if (desc < 0) - perror_with_name (name); - - old_chain = make_cleanup (close, desc); - make_cleanup (free_current_contents, &name); - - READ_FILE_HEADERS (desc, name); - - if (NUMBER_OF_SYMBOLS == 0) - { - printf ("%s does not have a symbol-table.\n", name); - fflush (stdout); - return; - } - - printf ("Reading symbol data from %s...", name); - fflush (stdout); - - /* Now read the string table, all at once. */ - val = lseek (desc, STRING_TABLE_OFFSET, 0); - if (val < 0) - perror_with_name (name); - stat (name, &statbuf); - READ_STRING_TABLE_SIZE (buffer); - if (buffer >= 0 && buffer < statbuf.st_size) - stringtab = (char *) alloca (buffer); - else - stringtab = NULL; - if (stringtab == NULL) - error ("ridiculous string table size: %d bytes", name, buffer); - - bcopy (&buffer, stringtab, sizeof buffer); - val = myread (desc, stringtab + sizeof buffer, buffer - sizeof buffer); - if (val < 0) - perror_with_name (name); - -#ifdef READ_GDB_SYMSEGS - /* That puts us at the symsegs. Read them. */ - symseg_chain = read_symsegs (desc, name); - hash_symsegs (); - - /* Free the symtabs made by read_symsegs, but not their contents, - which have been copied into symtabs on symtab_list. */ - for (symseg = symseg_chain; symseg; symseg = symseg->next) - { - int i; - struct sourcevector *sv = (struct sourcevector *) symseg->linetable; - - for (i = 0; i < sv->length; i++) - { - int j; - struct source *source = sv->source[i]; - struct symtab *sp1 - = (struct symtab *) xxmalloc (sizeof (struct symtab)); - - bcopy (symseg, sp1, sizeof (struct symtab)); - sp1->filename = savestring (source->name, strlen (source->name)); - sp1->linetable = &source->contents; - sp1->free_code = free_nothing; - sp1->free_ptr = (i == 0) ? (char *) symseg : 0; - - sp1->next = symtab_list; - symtab_list = sp1; - } - } -#else - /* Where people are using the 4.2 ld program, must not check for - symsegs, because that ld puts randonm garbage at the end of - the output file and that would trigger an error message. */ - symseg_chain = 0; -#endif - - /* Position to read the symbol table. Do not read it all at once. */ - val = lseek (desc, SYMBOL_TABLE_OFFSET, 0); - if (val < 0) - perror_with_name (name); - - init_misc_functions (); - make_cleanup (discard_misc_bunches, 0); - init_header_files (); - make_cleanup (free_header_files, 0); - free_pendings = 0; - pending_blocks = 0; - file_symbols = 0; - global_symbols = 0; - make_cleanup (really_free_pendings, 0); - - read_addl_syms (desc, stringtab, NUMBER_OF_SYMBOLS, text_addr, - SIZE_OF_TEXT_SEGMENT); - - - /* Sort symbols alphabetically within each block. */ - - sort_syms (); - - /* Go over the misc functions and install them in vector. */ - - condense_addl_misc_bunches (1); - - /* Don't allow char * to have a typename (else would get caddr_t.) */ - - TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; - - /* Make a default for file to list. */ - /* Hmmm. I'd say we don't want this in add_file_command, but . . . */ - - select_source_symtab (symtab_list); - - do_cleanups (old_chain); - - /* Free the symtabs made by read_symsegs, but not their contents, - which have been copied into symtabs on symtab_list. */ - while (symseg_chain) - { - register struct symtab *s = symseg_chain->next; - free (symseg_chain); - symseg_chain = s; - } - - printf ("done.\n"); - fflush (stdout); -} - -static struct symbol * -define_symbol (value, string, desc) - int value; - char *string; - int desc; -{ - register struct symbol *sym - = (struct symbol *) obstack_alloc (symbol_obstack, sizeof (struct symbol)); - char *p = (char *) index (string, ':'); - int deftype; - register int i; - - /* Ignore syms with empty names. */ - if (string[0] == 0) - return 0; - - SYMBOL_NAME (sym) - = (char *) obstack_alloc (symbol_obstack, ((p - string) + 1)); - /* Open-coded bcopy--saves function call time. */ - { - register char *p1 = string; - register char *p2 = SYMBOL_NAME (sym); - while (p1 != p) - *p2++ = *p1++; - *p2++ = '\0'; - } - p++; - /* Determine the type of name being defined. */ - if ((*p >= '0' && *p <= '9') || *p == '(') - deftype = 'l'; - else - deftype = *p++; - - /* c is a special case, not followed by a type-number. - SYMBOL:c=iVALUE for an integer constant symbol. - SYMBOL:c=rVALUE for a floating constant symbol. */ - if (deftype == 'c') - { - if (*p++ != '=') - error ("Invalid symbol data at symtab pos %d.", symnum); - switch (*p++) - { - case 'r': - { - double d = atof (p); - char *value; - - SYMBOL_TYPE (sym) = builtin_type_double; - value = (char *) obstack_alloc (symbol_obstack, sizeof (double)); - bcopy (&d, value, sizeof (double)); - SYMBOL_VALUE_BYTES (sym) = value; - SYMBOL_CLASS (sym) = LOC_CONST; - } - break; - case 'i': - { - SYMBOL_TYPE (sym) = builtin_type_int; - SYMBOL_VALUE (sym) = atoi (p); - SYMBOL_CLASS (sym) = LOC_CONST_BYTES; - } - break; - default: - error ("Invalid symbol data at symtab pos %d.", symnum); - } - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &file_symbols); - return sym; - } - - /* Now usually comes a number that says which data type, - and possibly more stuff to define the type - (all of which is handled by read_type) */ - - if (deftype == 'p' && *p == 'F') - /* pF is a two-letter code that means a function parameter in Fortran. - The type-number specifies the type of the return value. - Translate it into a pointer-to-function type. */ - { - p++; - SYMBOL_TYPE (sym) - = lookup_pointer_type (lookup_function_type (read_type (&p))); - } - else - { - struct type *type = read_type (&p); - - if ((deftype == 'F' || deftype == 'f') - && TYPE_CODE (type) != TYPE_CODE_FUNC) - SYMBOL_TYPE (sym) = lookup_function_type (type); - else - SYMBOL_TYPE (sym) = type; - } - - switch (deftype) - { - case 'f': - SYMBOL_CLASS (sym) = LOC_BLOCK; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &file_symbols); - break; - - case 'F': - SYMBOL_CLASS (sym) = LOC_BLOCK; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &global_symbols); - break; - - case 'G': - /* For a class G (global) symbol, it appears that the - value is not correct. It is necessary to search for the - corresponding linker definition to find the value. - These definitions appear at the end of the namelist. */ - i = hashname (SYMBOL_NAME (sym)); - SYMBOL_VALUE (sym) = (int) global_sym_chain[i]; - global_sym_chain[i] = sym; - SYMBOL_CLASS (sym) = LOC_STATIC; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &global_symbols); - break; - - /* This case is faked by a conditional above, - when there is no code letter in the dbx data. - Dbx data never actually contains 'l'. */ - case 'l': - SYMBOL_CLASS (sym) = LOC_LOCAL; - SYMBOL_VALUE (sym) = value; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &local_symbols); - break; - - case 'p': - SYMBOL_CLASS (sym) = LOC_ARG; - SYMBOL_VALUE (sym) = value; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &local_symbols); - /* DESC == 0 implies compiled with GCC. - In this case, if it says `short', believe it. */ - if (desc == 0) - break; - /* If PCC says a parameter is a short or a char, - it is really an int. */ - if (SYMBOL_TYPE (sym) == builtin_type_char - || SYMBOL_TYPE (sym) == builtin_type_short) - SYMBOL_TYPE (sym) = builtin_type_int; - else if (SYMBOL_TYPE (sym) == builtin_type_unsigned_char - || SYMBOL_TYPE (sym) == builtin_type_unsigned_short) - SYMBOL_TYPE (sym) = builtin_type_unsigned_int; - break; - - case 'P': - SYMBOL_CLASS (sym) = LOC_REGPARM; - SYMBOL_VALUE (sym) = value; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &local_symbols); - break; - - case 'r': - SYMBOL_CLASS (sym) = LOC_REGISTER; - SYMBOL_VALUE (sym) = value; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &local_symbols); - break; - - case 'S': - /* Static symbol at top level of file */ - SYMBOL_CLASS (sym) = LOC_STATIC; - SYMBOL_VALUE (sym) = value; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &file_symbols); - break; - - case 't': - SYMBOL_CLASS (sym) = LOC_TYPEDEF; - SYMBOL_VALUE (sym) = value; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0 - && (TYPE_FLAGS (SYMBOL_TYPE (sym)) & TYPE_FLAG_PERM) == 0) - TYPE_NAME (SYMBOL_TYPE (sym)) = - obsavestring (SYMBOL_NAME (sym), - strlen (SYMBOL_NAME (sym))); - /* C++ vagaries: we may have a type which is derived from - a base type which did not have its name defined when the - derived class was output. We fill in the derived class's - base part member's name here in that case. */ - else if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT - || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) - && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) - { - int i; - for (i = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)); i > 0; i--) - if (TYPE_FIELD_NAME (SYMBOL_TYPE (sym), i - 1) == 0) - TYPE_FIELD_NAME (SYMBOL_TYPE (sym), i - 1) = - TYPE_NAME (TYPE_BASECLASS (SYMBOL_TYPE (sym), i)); - } - - add_symbol_to_list (sym, &file_symbols); - break; - - case 'T': - SYMBOL_CLASS (sym) = LOC_TYPEDEF; - SYMBOL_VALUE (sym) = value; - SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; - if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0 - && (TYPE_FLAGS (SYMBOL_TYPE (sym)) & TYPE_FLAG_PERM) == 0) - TYPE_NAME (SYMBOL_TYPE (sym)) - = obconcat ("", - (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_ENUM - ? "enum " - : (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT - ? "struct " : "union ")), - SYMBOL_NAME (sym)); - add_symbol_to_list (sym, &file_symbols); - break; - - case 'V': - case 'v': - /* Static symbol of local scope */ - SYMBOL_CLASS (sym) = LOC_STATIC; - SYMBOL_VALUE (sym) = value; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - add_symbol_to_list (sym, &local_symbols); - break; - - default: - error ("Invalid symbol data: unknown symbol-type code `%c' at symtab pos %d.", deftype, symnum); - } - return sym; -} - -/* Read a number by which a type is referred to in dbx data, - or perhaps read a pair (FILENUM, TYPENUM) in parentheses. - Just a single number N is equivalent to (0,N). - Return the two numbers by storing them in the vector TYPENUMS. - TYPENUMS will then be used as an argument to dbx_lookup_type. */ - -static void -read_type_number (pp, typenums) - register char **pp; - register int *typenums; -{ - if (**pp == '(') - { - (*pp)++; - typenums[0] = read_number (pp, ','); - typenums[1] = read_number (pp, ')'); - } - else - { - typenums[0] = 0; - typenums[1] = read_number (pp, 0); - } -} - -/* Read a dbx type reference or definition; - return the type that is meant. - This can be just a number, in which case it references - a type already defined and placed in type_vector. - Or the number can be followed by an =, in which case - it means to define a new type according to the text that - follows the =. */ - -static -struct type * -read_type (pp) - register char **pp; -{ - register struct type *type = 0; - register int n; - struct type *type1; - int typenums[2]; - int xtypenums[2]; - - read_type_number (pp, typenums); - - /* Detect random reference to type not yet defined. - Allocate a type object but leave it zeroed. */ - if (**pp != '=') - return dbx_alloc_type (typenums); - - *pp += 2; - switch ((*pp)[-1]) - { - case 'x': - type = dbx_alloc_type (typenums); - /* Set the type code according to the following letter. */ - switch ((*pp)[0]) - { - case 's': - TYPE_CODE (type) = TYPE_CODE_STRUCT; - break; - case 'u': - TYPE_CODE (type) = TYPE_CODE_UNION; - break; - case 'e': - TYPE_CODE (type) = TYPE_CODE_ENUM; - break; - } - /* Skip the name the cross-ref points to. */ - /* Note: for C++, the cross reference may be to a base type which - has not yet been seen. In this case, we skip to the comma, - which will mark the end of the base class name. (The ':' - at the end of the base class name will be skipped as well.) */ - *pp = (char *) index (*pp, ','); - /* Just allocate the type and leave it zero if nothing known */ - return dbx_alloc_type (typenums); - - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - case '(': - (*pp)--; - read_type_number (pp, xtypenums); - type = *dbx_lookup_type (xtypenums); - if (type == 0) - type = builtin_type_void; - *dbx_lookup_type (typenums) = type; - break; - - case '*': - type1 = read_type (pp); - if (TYPE_POINTER_TYPE (type1)) - { - type = TYPE_POINTER_TYPE (type1); - *dbx_lookup_type (typenums) = type; - } - else - { - type = dbx_alloc_type (typenums); - smash_to_pointer_type (type, type1); - } - break; - - case '@@': - { - struct type *domain = read_type (pp); - char c; - struct type *memtype; - - if (*(*pp)++ != ',') - error ("invalid member type data format, at symtab pos %d.", - symnum); - - memtype = read_type (pp); - type = dbx_alloc_type (typenums); - smash_to_member_type (type, domain, memtype); - } - break; - - case '&': - type1 = read_type (pp); - if (TYPE_REFERENCE_TYPE (type1)) - { - type = TYPE_REFERENCE_TYPE (type1); - *dbx_lookup_type (typenums) = type; - } - else - { - type = dbx_alloc_type (typenums); - smash_to_reference_type (type, type1); - } - break; - - case 'f': - type1 = read_type (pp); - if (TYPE_FUNCTION_TYPE (type1)) - { - type = TYPE_FUNCTION_TYPE (type1); - *dbx_lookup_type (typenums) = type; - } - else - { - type = dbx_alloc_type (typenums); - smash_to_function_type (type, type1); - } - break; - - case 'r': - type = read_range_type (pp, typenums); - *dbx_lookup_type (typenums) = type; - break; - - case 'e': - type = dbx_alloc_type (typenums); - type = read_enum_type (pp, type); - *dbx_lookup_type (typenums) = type; - break; - - case 's': - type = dbx_alloc_type (typenums); - type = read_struct_type (pp, type); - break; - - case 'u': - type = dbx_alloc_type (typenums); - type = read_struct_type (pp, type); - TYPE_CODE (type) = TYPE_CODE_UNION; - break; - - case 'a': - if (*(*pp)++ != 'r') - error ("Invalid symbol data: unrecognized type-code `a%c' %s %d.", - (*pp)[-1], "at symtab position", symnum); - - type = dbx_alloc_type (typenums); - type = read_array_type (pp, type); - break; - -#if 0 - /* Format of an array type: - "ar<index type>;lower;upper;<array_contents_type>". Put code - in to handle this. */ - - /* dbx expresses array types in terms of a range type for the index, - and that range type is specified right inside the array type spec - making ar1;MIN;MAX;VALTYPE */ - if (!strncmp (*pp, "r1;0;", 5)) - (*pp) += 5; - else if (!strncmp (*pp, "r(0,1);0;", 9)) - (*pp) += 9; - else break; - - TYPE_CODE (type) = TYPE_CODE_ARRAY; - /* In Fortran, an upper bound may be T... meaning a parameter specifies - the length of the data. In this case, just pretend the bound is 1. - This happens only for array parameters, which are really passed - as pointers anyway, and we will translate them into such. */ - if (**pp == 'T') - { - n = 1; - while (**pp != ';') - (*pp)++; - } - else - n = read_number (pp, ';') + 1; - TYPE_TARGET_TYPE (type) = read_type (pp); - TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)) * n; - break; -#endif - - default: - error ("Invalid symbol data: unrecognized type-code `%c' at symtab pos %d.", - (*pp)[-1], symnum); - } - - if (type == 0) - abort (); - -#if 0 - /* If this is an overriding temporary alteration for a header file's - contents, and this type number is unknown in the global definition, - put this type into the global definition at this type number. */ - if (header_file_prev_index >= 0) - { - register struct type **tp - = explicit_lookup_type (header_file_prev_index, typenums[1]); - if (*tp == 0) - *tp = type; - } -#endif - return type; -} - -/* This page contains subroutines of read_type. */ - -/* Read the description of a structure (or union type) - and return an object describing the type. */ - -static struct type * -read_struct_type (pp, type) - char **pp; - register struct type *type; -{ - struct nextfield - { - struct nextfield *next; - int visibility; - struct field field; - }; - - struct next_fnfield - { - struct next_fnfield *next; - int visibility; - struct fn_field fn_field; - }; - - struct next_fnfieldlist - { - struct next_fnfieldlist *next; - struct fn_fieldlist fn_fieldlist; - }; - - register struct nextfield *list = 0; - struct nextfield *new; - int totalsize; - char *name; - register char *p; - int nfields = 0; - register int n; - - register struct next_fnfieldlist *mainlist = 0; - int nfn_fields = 0; - struct type *baseclass = NULL; - int read_possible_virtual_info = 0; - - TYPE_CODE (type) = TYPE_CODE_STRUCT; - - /* First comes the total size in bytes. */ - - TYPE_LENGTH (type) = read_number (pp, 0); - - /* C++: Now, if the class is a derived class, then the next character - will be a '!', followed by the number of base classes derived from. - Each element in the list contains visibility information, - the offset of this base class in the derived structure, - and then the base type. */ - if (**pp == '!') - { - int i, n_baseclasses, offset; - struct type **baseclass_vec; - struct type *baseclass; - int via_public, via_virtual; - - *pp += 1; - - n_baseclasses = read_number (pp, ','); - baseclass_vec = (struct type **) - obstack_alloc (symbol_obstack, - (n_baseclasses) * sizeof (struct type **)) - 1; - - for (i = 1; i <= n_baseclasses; i++) - { - if (**pp == '\\') - *pp = next_symbol_text (); - - switch (*(*pp)++) - { - case '0': - via_virtual = 0; - break; - case '1': - via_virtual = 1; - break; - default: - error ("Invalid symbol data: bad visibility format at symtab pos %d", - symnum); - } - - switch (*(*pp)++) - { - case '0': - via_public = 0; - break; - case '2': - via_public = 1; - break; - default: - error ("Invalid symbol data: bad visibility format at symtab pos %d.", - symnum); - } - offset = read_number (pp, ','); - baseclass = read_type (pp); - *pp += 1; /* skip trailing ';' */ - baseclass_vec[i] = lookup_basetype_type (baseclass, offset, via_virtual, via_public); - - /* Make this baseclass visible for structure-printing purposes. */ - new = (struct nextfield *) alloca (sizeof (struct nextfield)); - new->next = list; - list = new; - list->field.type = baseclass_vec[i]; - list->field.name = TYPE_NAME (baseclass_vec[i]); - list->field.bitpos = offset; - list->field.bitsize = 0; /* this should be an unpacked field! */ - nfields++; - } - TYPE_N_BASECLASSES (type) = n_baseclasses; - TYPE_BASECLASSES (type) = baseclass_vec; - } - - /* Now come the fields, as NAME:?TYPENUM,BITPOS,BITSIZE; for each one. - At the end, we see a semicolon instead of a field. - - In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for - a static field. - - The `?' is a placeholder for one of '+' (public visibility), - '0' (protected visibility), and '-' (private visibility). */ - - while (**pp != ';') - { - int visibility; - - /* Check for and handle cretinous dbx symbol name continuation! */ - if (**pp == '\\') *pp = next_symbol_text (); - - /* Get space to record the next field's data. */ - new = (struct nextfield *) alloca (sizeof (struct nextfield)); - new->next = list; - list = new; - - /* Read the data. */ - p = *pp; - while (*p != ':') p++; - list->field.name = obsavestring (*pp, p - *pp); - - /* C++: Check to see if we have hit the methods yet. */ - if (p[1] == ':') - break; - - *pp = p + 1; - - /* This means we have a visibility for a field coming. */ - if (**pp == '/') - { - switch (*++*pp) - { - case '0': - visibility = 0; - *pp += 1; - break; - - case '1': - visibility = 1; - *pp += 1; - break; - - case '2': - visibility = 2; - *pp += 1; - break; - } - } - /* else normal dbx-style format. */ - - list->field.type = read_type (pp); - if (**pp == ':') - { - list->field.bitpos = (long)-1; - p = ++(*pp); - while (*p != ';') p++; - list->field.bitsize = (long) savestring (*pp, p - *pp); - *pp = p + 1; - nfields++; - continue; - } - else if (**pp != ',') - error ("Invalid symbol data: bad structure-type format at symtab pos %d.", - symnum); - (*pp)++; /* Skip the comma. */ - list->field.bitpos = read_number (pp, ','); - list->field.bitsize = read_number (pp, ';'); - /* Detect an unpacked field and mark it as such. - dbx gives a bit size for all fields. - Note that forward refs cannot be packed, - and treat enums as if they had the width of ints. */ - if (TYPE_CODE (list->field.type) != TYPE_CODE_INT - && TYPE_CODE (list->field.type) != TYPE_CODE_ENUM) - list->field.bitsize = 0; - if ((list->field.bitsize == 8 * TYPE_LENGTH (list->field.type) - || (TYPE_CODE (list->field.type) == TYPE_CODE_ENUM - && list->field.bitsize == 8 * TYPE_LENGTH (builtin_type_int))) - && - list->field.bitpos % 8 == 0) - list->field.bitsize = 0; - nfields++; - } - - /* Now come the method fields, as NAME::methods - where each method is of the form TYPENUM,ARGS,...:PHYSNAME; - At the end, we see a semicolon instead of a field. - - For the case of overloaded operators, the format is - OPERATOR::*.methods, where OPERATOR is the string "operator", - `*' holds the place for an operator name (such as `+=') - and `.' marks the end of the operator name. */ - if (p[1] == ':') - { - /* Now, read in the methods. To simplify matters, we - "unread" the name that has been read, so that we can - start from the top. */ - - p = *pp; - - /* chill the list of fields: the last entry (at the head) - is a partially constructed entry which we now scrub. */ - list = list->next; - - /* For each list of method lists... */ - do - { - int i; - struct next_fnfield *sublist = 0; - struct fn_field *fn_fields = 0; - int length = 0; - struct next_fnfieldlist *new_mainlist = - (struct next_fnfieldlist *)alloca (sizeof (struct next_fnfieldlist)); - - /* read in the name. */ - while (*p != ':') p++; - if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && (*pp)[2] == '$') - { - static char opname[32] = "operator "; - char *o = opname + 9; - - /* Skip past '::'. */ - p += 2; - while (*p != '.') - *o++ = *p++; - new_mainlist->fn_fieldlist.name = savestring (opname, o - opname); - /* Skip past '.' */ - *pp = p + 1; - } - else - { - i = 0; - new_mainlist->fn_fieldlist.name = savestring (*pp, p - *pp); - /* Skip past '::'. */ - *pp = p + 2; - } - - do - { - struct next_fnfield *new_sublist = - (struct next_fnfield *)alloca (sizeof (struct next_fnfield)); - - /* Check for and handle cretinous dbx symbol name continuation! */ - if (**pp == '\\') *pp = next_symbol_text (); - - new_sublist->fn_field.type = read_type (pp); - new_sublist->fn_field.args = read_args (pp, ':'); - p = *pp; - while (*p != ';') p++; - new_sublist->fn_field.physname = savestring (*pp, p - *pp); - *pp = p + 1; - new_sublist->visibility = *(*pp)++ - '0'; - if (**pp == '\\') *pp = next_symbol_text (); - - if (*(*pp)++ == '*') - new_sublist->fn_field.voffset = read_number (pp, ';') + 1; - else - new_sublist->fn_field.voffset = 0; - - new_sublist->next = sublist; - sublist = new_sublist; - length++; - } - while (**pp != ';'); - - *pp += 1; - - new_mainlist->fn_fieldlist.fn_fields = - (struct fn_field *) obstack_alloc (symbol_obstack, - sizeof (struct fn_field) * length); - TYPE_FN_PRIVATE_BITS (new_mainlist->fn_fieldlist) = - (int *) obstack_alloc (symbol_obstack, - sizeof (int) * (1 + (length >> 5))); - - TYPE_FN_PROTECTED_BITS (new_mainlist->fn_fieldlist) = - (int *) obstack_alloc (symbol_obstack, - sizeof (int) * (1 + (length >> 5))); - - for (i = length; sublist; sublist = sublist->next) - { - new_mainlist->fn_fieldlist.fn_fields[--i] = sublist->fn_field; - if (sublist->visibility == 0) - B_SET (new_mainlist->fn_fieldlist.private_fn_field_bits, i); - else if (sublist->visibility == 1) - B_SET (new_mainlist->fn_fieldlist.protected_fn_field_bits, i); - } - - new_mainlist->fn_fieldlist.length = length; - new_mainlist->next = mainlist; - mainlist = new_mainlist; - nfn_fields++; - } - while (**pp != ';'); - } - - *pp += 1; - - /* Now create the vector of fields, and record how big it is. */ - - TYPE_NFIELDS (type) = nfields; - TYPE_FIELDS (type) = (struct field *) obstack_alloc (symbol_obstack, - sizeof (struct field) * nfields); - TYPE_FIELD_PRIVATE_BITS (type) = - (int *) obstack_alloc (symbol_obstack, - sizeof (int) * (1 + (nfields >> 5))); - TYPE_FIELD_PROTECTED_BITS (type) = - (int *) obstack_alloc (symbol_obstack, - sizeof (int) * (1 + (nfields >> 5))); - - TYPE_NFN_FIELDS (type) = nfn_fields; - TYPE_NFN_FIELDS_TOTAL (type) = nfn_fields; - if (baseclass) - TYPE_NFN_FIELDS_TOTAL (type) += TYPE_NFN_FIELDS_TOTAL (baseclass); - - TYPE_FN_FIELDLISTS (type) = - (struct fn_fieldlist *) obstack_alloc (symbol_obstack, - sizeof (struct fn_fieldlist) * nfn_fields); - - /* Copy the saved-up fields into the field vector. */ - - for (n = nfields; list; list = list->next) - { - TYPE_FIELD (type, --n) = list->field; - if (list->visibility == 0) - SET_TYPE_FIELD_PRIVATE (type, n); - else if (list->visibility == 1) - SET_TYPE_FIELD_PROTECTED (type, n); - } - - for (n = nfn_fields; mainlist; mainlist = mainlist->next) - TYPE_FN_FIELDLISTS (type)[--n] = mainlist->fn_fieldlist; - - if (**pp == '~') - { - *pp += 1; - - if (**pp == '=') - { - TYPE_FLAGS (type) - |= TYPE_FLAG_HAS_CONSTRUCTOR | TYPE_FLAG_HAS_DESTRUCTOR; - *pp += 1; - } - else if (**pp == '+') - { - TYPE_FLAGS (type) |= TYPE_FLAG_HAS_CONSTRUCTOR; - *pp += 1; - } - else if (**pp == '-') - { - TYPE_FLAGS (type) |= TYPE_FLAG_HAS_DESTRUCTOR; - *pp += 1; - } - - /* Read either a '%' or the final ';'. */ - if (*(*pp)++ == '%') - { - /* Now we must record the virtual function table pointer's - field information. */ - - struct type *t; - int i; - - t = read_type (pp); - p = (*pp)++; - while (*p != ';') p++; - TYPE_VPTR_BASETYPE (type) = t; - if (type == t) - { - if (TYPE_FIELD_NAME (t, 0) == 0) - TYPE_VPTR_FIELDNO (type) = i = 0; - else for (i = TYPE_NFIELDS (t) - 1; i >= 0; --i) - if (! strncmp (TYPE_FIELD_NAME (t, i), *pp, - strlen (TYPE_FIELD_NAME (t, i)))) - { - TYPE_VPTR_FIELDNO (type) = i; - break; - } - if (i < 0) - error ("virtual function table field not found"); - } - else - TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, 1)); - *pp = p + 1; - } - else - { - TYPE_VPTR_BASETYPE (type) = 0; - TYPE_VPTR_FIELDNO (type) = -1; - } - } - else - { - TYPE_VPTR_BASETYPE (type) = 0; - TYPE_VPTR_FIELDNO (type) = -1; - } - - return type; -} - -/* Read a definition of an enumberation type, - and create and return a suitable type object. - Also creates a range type which represents the bounds of that - array. */ -static struct type * -read_array_type (pp, type) - register char **pp; - register struct type *type; -{ - struct type *index_type, *element_type, *range_type; - int lower, upper; - - /* Format of an array type: - "ar<index type>;lower;upper;<array_contents_type>". Put code in - to handle this. */ - - index_type = read_type (pp); - if (*(*pp)++ != ';') - error ("Invalid symbol data; improper format of array type decl."); - lower = read_number (pp, ';'); - upper = read_number (pp, ';'); - element_type = read_type (pp); - - { - /* Create range type. */ - range_type = (struct type *) obstack_alloc (symbol_obstack, - sizeof (struct type)); - TYPE_CODE (range_type) = TYPE_CODE_RANGE; - TYPE_TARGET_TYPE (range_type) = index_type; - - /* This should never be needed. */ - TYPE_LENGTH (range_type) = sizeof (int); - - TYPE_NFIELDS (range_type) = 2; - TYPE_FIELDS (range_type) = - (struct field *) obstack_alloc (symbol_obstack, - 2 * sizeof (struct field)); - TYPE_FIELD_BITPOS (range_type, 0) = lower; - TYPE_FIELD_BITPOS (range_type, 1) = upper; - } - - TYPE_CODE (type) = TYPE_CODE_ARRAY; - TYPE_TARGET_TYPE (type) = element_type; - TYPE_LENGTH (type) = (upper - lower + 1) * TYPE_LENGTH (element_type); - TYPE_NFIELDS (type) = 1; - TYPE_FIELDS (type) = - (struct field *) obstack_alloc (symbol_obstack, - sizeof (struct field)); - TYPE_FIELD_TYPE (type, 0) = range_type; - - return type; -} - - -/* Read a definition of an enumeration type, - and create and return a suitable type object. - Also defines the symbols that represent the values of the type. */ - -static struct type * -read_enum_type (pp, type) - register char **pp; - register struct type *type; -{ - register char *p; - char *name; - register long n; - register struct symbol *sym; - int nsyms = 0; - struct pending **symlist; - struct pending *osyms, *syms; - int o_nsyms; - - if (within_function) - symlist = &local_symbols; - else - symlist = &file_symbols; - osyms = *symlist; - o_nsyms = osyms ? osyms->nsyms : 0; - - /* Read the value-names and their values. - The input syntax is NAME:VALUE,NAME:VALUE, and so on. - A semicolon instead of a NAME means the end. */ - while (**pp && **pp != ';') - { - /* Check for and handle cretinous dbx symbol name continuation! */ - if (**pp == '\\') *pp = next_symbol_text (); - - p = *pp; - while (*p != ':') p++; - name = obsavestring (*pp, p - *pp); - *pp = p + 1; - n = read_number (pp, ','); - - sym = (struct symbol *) obstack_alloc (symbol_obstack, sizeof (struct symbol)); - bzero (sym, sizeof (struct symbol)); - SYMBOL_NAME (sym) = name; - SYMBOL_CLASS (sym) = LOC_CONST; - SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - SYMBOL_VALUE (sym) = n; - add_symbol_to_list (sym, symlist); - nsyms++; - } - - (*pp)++; /* Skip the semicolon. */ - - /* Now fill in the fields of the type-structure. */ - - TYPE_LENGTH (type) = sizeof (int); - TYPE_CODE (type) = TYPE_CODE_ENUM; - TYPE_NFIELDS (type) = nsyms; - TYPE_FIELDS (type) = (struct field *) obstack_alloc (symbol_obstack, sizeof (struct field) * nsyms); - - /* Find the symbols for the values and put them into the type. - The symbols can be found in the symlist that we put them on - to cause them to be defined. osyms contains the old value - of that symlist; everything up to there was defined by us. */ - - for (syms = *symlist, n = nsyms; syms; syms = syms->next) - { - int j = 0; - if (syms == osyms) - j = o_nsyms; - for (; j < syms->nsyms; j++) - { - struct symbol *sym = syms->symbol[j]; - SYMBOL_TYPE (sym) = type; - TYPE_FIELD_NAME (type, --n) = SYMBOL_NAME (sym); - TYPE_FIELD_VALUE (type, n) = 0; - TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (sym); - TYPE_FIELD_BITSIZE (type, n) = 0; - } - if (syms == osyms) - break; - } - - return type; -} - -#define MAX_OF_TYPE(t) ((1 << (sizeof (t) - 1)) - 1) -#define MIN_OF_TYPE(t) (-(1 << (sizeof (t) - 1))) - -static struct type * -read_range_type (pp, typenums) - char **pp; - int typenums[2]; -{ - char *errp = *pp; - int rangenums[2]; - int n2, n3; - int self_subrange; - struct type *result_type; - - /* First comes a type we are a subrange of. - In C it is usually 0, 1 or the type being defined. */ - read_type_number (pp, rangenums); - self_subrange = (rangenums[0] == typenums[0] && - rangenums[1] == typenums[1]); - - /* A semicolon should now follow; skip it. */ - if (**pp == ';') - (*pp)++; - - /* The remaining two operands are usually lower and upper bounds - of the range. But in some special cases they mean something else. */ - n2 = read_number (pp, ';'); - n3 = read_number (pp, ';'); - - /* A type defined as a subrange of itself, with bounds both 0, is void. */ - if (self_subrange && n2 == 0 && n3 == 0) - return builtin_type_void; - - /* If n3 is zero and n2 is not, we want a floating type, - and n2 is the width in bytes. - - Fortran programs appear to use this for complex types also, - and they give no way to distinguish between double and single-complex! - We don't have complex types, so we would lose on all fortran files! - So return type `double' for all of those. It won't work right - for the complex values, but at least it makes the file loadable. */ - - if (n3 == 0 && n2 > 0) - { - if (n2 == sizeof (float)) - return builtin_type_float; - return builtin_type_double; - } - - /* If the upper bound is -1, it must really be an unsigned int. */ - - else if (n2 == 0 && n3 == -1) - { - if (sizeof (int) == sizeof (long)) - return builtin_type_unsigned_int; - else - return builtin_type_unsigned_long; - } - - /* Special case: char is defined (Who knows why) as a subrange of - itself with range 0-127. */ - else if (self_subrange && n2 == 0 && n3 == 127) - return builtin_type_char; - - /* Assumptions made here: Subrange of self is equivalent to subrange - of int. */ - else if (n2 == 0 - && (self_subrange || - *dbx_lookup_type (rangenums) == builtin_type_int)) - { - /* an unsigned type */ - if (n3 == (1 << (8 * sizeof (int))) - 1) - return builtin_type_unsigned_int; - if (n3 == (1 << (8 * sizeof (short))) - 1) - return builtin_type_unsigned_short; - if (n3 == (1 << (8 * sizeof (char))) - 1) - return builtin_type_unsigned_char; - } - else if (n2 == -n3 -1) - { - /* a signed type */ - if (n3 == (1 << (8 * sizeof (int) - 1)) - 1) - return builtin_type_int; - if (n3 == (1 << (8 * sizeof (long) - 1)) - 1) - return builtin_type_long; - if (n3 == (1 << (8 * sizeof (short) - 1)) - 1) - return builtin_type_short; - if (n3 == (1 << (8 * sizeof (char) - 1)) - 1) - return builtin_type_char; - } - - /* We have a real range type on our hands. Allocate space and - return a real pointer. */ - - /* At this point I don't have the faintest idea how to deal with - a self_subrange type; I'm going to assume that this is used - as an idiom, and that all of them are special cases. So . . . */ - if (self_subrange) - error ("Type defined as subrange of itself."); - - result_type = (struct type *) obstack_alloc (symbol_obstack, - sizeof (struct type)); - bzero (result_type, sizeof (struct type)); - - TYPE_TARGET_TYPE (result_type) = (self_subrange ? - builtin_type_int : - *dbx_lookup_type(rangenums)); - - /* We have to figure out how many bytes it takes to hold this - range type. I'm going to assume that anything that is pushing - the bounds of a long was taken care of above. */ - if (n2 >= MIN_OF_TYPE(char) && n3 <= MAX_OF_TYPE(char)) - TYPE_LENGTH (result_type) = 1; - else if (n2 >= MIN_OF_TYPE(short) && n3 <= MAX_OF_TYPE(short)) - TYPE_LENGTH (result_type) = sizeof (short); - else if (n2 >= MIN_OF_TYPE(int) && n3 <= MAX_OF_TYPE(int)) - TYPE_LENGTH (result_type) = sizeof (int); - else if (n2 >= MIN_OF_TYPE(long) && n3 <= MAX_OF_TYPE(long)) - TYPE_LENGTH (result_type) = sizeof (long); - else - error ("Ranged type doesn't fit within known sizes."); - - TYPE_LENGTH (result_type) = TYPE_LENGTH (TYPE_TARGET_TYPE (result_type)); - TYPE_CODE (result_type) = TYPE_CODE_RANGE; - TYPE_NFIELDS (result_type) = 2; - TYPE_FIELDS (result_type) = - (struct field *) obstack_alloc (symbol_obstack, - 2 * sizeof (struct field)); - bzero (TYPE_FIELDS (result_type), 2 * sizeof (struct field)); - TYPE_FIELD_BITPOS (result_type, 0) = n2; - TYPE_FIELD_BITPOS (result_type, 1) = n3; - - return result_type; -} - -/* Read a number from the string pointed to by *PP. - The value of *PP is advanced over the number. - If END is nonzero, the character that ends the - number must match END, or an error happens; - and that character is skipped if it does match. - If END is zero, *PP is left pointing to that character. */ - -static long -read_number (pp, end) - char **pp; - int end; -{ - register char *p = *pp; - register long n = 0; - register int c; - int sign = 1; - - /* Handle an optional leading minus sign. */ - - if (*p == '-') - { - sign = -1; - p++; - } - - /* Read the digits, as far as they go. */ - - while ((c = *p++) >= '0' && c <= '9') - { - n *= 10; - n += c - '0'; - } - if (end) - { - if (c && c != end) - error ("Invalid symbol data: invalid character \\%03o at symbol pos %d.", c, symnum); - } - else - --p; - - *pp = p; - return n * sign; -} - -/* Read in an argument list. This is a list of types. It is terminated with - a ':', FYI. Return the list of types read in. */ -static struct type ** -read_args (pp, end) - char **pp; - int end; -{ - struct type *types[1024], **rval; /* allow for fns of 1023 parameters */ - int n = 0; - - while (**pp != end) - { - if (**pp != ',') - error ("Invalid argument list: no ',', at symtab pos %d", symnum); - *pp += 1; - - /* Check for and handle cretinous dbx symbol name continuation! */ - if (**pp == '\\') - *pp = next_symbol_text (); - - types[n++] = read_type (pp); - } - *pp += 1; /* get past `end' (the ':' character) */ - - if (n == 1) - { - rval = (struct type **) xmalloc (2 * sizeof (struct type *)); - } - else if (TYPE_CODE (types[n-1]) != TYPE_CODE_VOID) - { - rval = (struct type **) xmalloc ((n + 1) * sizeof (struct type *)); - bzero (rval + n, sizeof (struct type *)); - } - else - { - rval = (struct type **) xmalloc (n * sizeof (struct type *)); - } - bcopy (types, rval, n * sizeof (struct type *)); - return rval; -} - -/* This function is really horrible, but to avoid it, there would need - to be more filling in of forward references. THIS SHOULD BE MOVED OUT - OF COFFREAD.C AND DBXREAD.C TO SOME PLACE WHERE IT CAN BE SHARED */ -int -fill_in_vptr_fieldno (type) - struct type *type; -{ - if (TYPE_VPTR_FIELDNO (type) < 0) - TYPE_VPTR_FIELDNO (type) = - fill_in_vptr_fieldno (TYPE_BASECLASS (type, 1)); - return TYPE_VPTR_FIELDNO (type); -} - -void -_initialize_dbxread () -{ - symfile = 0; - header_files = (struct header_file *) 0; - this_object_header_files = (int *) 0; - - add_com ("symbol-file", class_files, symbol_file_command, - "Load symbol table (in dbx format) from executable file FILE."); - - add_com ("add-file", class_files, add_file_command, - "Load the symbols from FILE, assuming its code is at TEXT_START.") ; -} - -#endif /* READ_DBX_FORMAT */ -@ - - -1.2 -log -@If discarding the symbol table, discard its name too, so "info files" -will give the right answer. -@ -text -@d27 1 -a27 1 -#include <sys/fcntl.h> -@ - - -1.1 -log -@Initial revision -@ -text -@d2 1 -a2 1 - Copyright (C) 1986, 1987, 1988 Free Software Foundation, Inc. -d1457 3 -@ |