/* Read dbx symbol tables and convert to internal format, for GDB.
- Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003.
Free Software Foundation, Inc.
This file is part of GDB.
#include <fcntl.h>
#endif
-#include "obstack.h"
+#include "gdb_obstack.h"
#include "gdb_stat.h"
-#include <ctype.h>
#include "symtab.h"
#include "breakpoint.h"
-#include "command.h"
#include "target.h"
#include "gdbcore.h" /* for bfd stuff */
#include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */
#include "stabsread.h"
#include "gdb-stabs.h"
#include "demangle.h"
-#include "language.h" /* Needed inside partial-stab.h */
+#include "language.h" /* Needed for local_hex_string */
#include "complaints.h"
+#include "cp-abi.h"
#include "aout/aout64.h"
#include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */
struct symloc
{
-
/* Offset within the file symbol table of first local symbol for this
file. */
static enum language psymtab_language = language_unknown;
-/* Nonzero means give verbose info on gdb action. From main.c. */
-
-extern int info_verbose;
-
/* The BFD for this file -- implicit parameter to next_symbol_text. */
static bfd *symfile_bfd;
/* Complaints about the symbols we have encountered. */
-struct complaint lbrac_complaint =
-{"bad block start address patched", 0, 0};
-
-struct complaint string_table_offset_complaint =
-{"bad string table offset in symbol %d", 0, 0};
-
-struct complaint unknown_symtype_complaint =
-{"unknown symbol type %s", 0, 0};
-
-struct complaint unknown_symchar_complaint =
-{"unknown symbol descriptor `%c'", 0, 0};
-
-struct complaint lbrac_rbrac_complaint =
-{"block start larger than block end", 0, 0};
-
-struct complaint lbrac_unmatched_complaint =
-{"unmatched N_LBRAC before symtab pos %d", 0, 0};
+static void
+unknown_symtype_complaint (const char *arg1)
+{
+ complaint (&symfile_complaints, "unknown symbol type %s", arg1);
+}
-struct complaint lbrac_mismatch_complaint =
-{"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0};
+static void
+lbrac_mismatch_complaint (int arg1)
+{
+ complaint (&symfile_complaints,
+ "N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", arg1);
+}
-struct complaint repeated_header_complaint =
-{"\"repeated\" header file %s not previously seen, at symtab pos %d", 0, 0};
+static void
+repeated_header_complaint (const char *arg1, int arg2)
+{
+ complaint (&symfile_complaints,
+ "\"repeated\" header file %s not previously seen, at symtab pos %d",
+ arg1, arg2);
+}
-struct complaint unclaimed_bincl_complaint =
-{"N_BINCL %s not in entries for any file, at symtab pos %d", 0, 0};
-\f
/* find_text_range --- find start and end of loadable code sections
The find_text_range function finds the shortest address range that
{
asection *sec;
int found_any = 0;
- CORE_ADDR start, end;
+ CORE_ADDR start = 0;
+ CORE_ADDR end = 0;
for (sec = sym_bfd->sections; sec; sec = sec->next)
if (bfd_get_section_flags (sym_bfd, sec) & SEC_CODE)
/* Local function prototypes */
-extern void _initialize_dbxread PARAMS ((void));
+extern void _initialize_dbxread (void);
-static void
-process_now PARAMS ((struct objfile *));
+#if 0 /* OBSOLETE CFront */
+// OBSOLETE static void process_now (struct objfile *);
+#endif /* OBSOLETE CFront */
-static void
-free_header_files PARAMS ((void));
+static void read_ofile_symtab (struct partial_symtab *);
-static void
-init_header_files PARAMS ((void));
+static void dbx_psymtab_to_symtab (struct partial_symtab *);
-static void
-read_ofile_symtab PARAMS ((struct partial_symtab *));
+static void dbx_psymtab_to_symtab_1 (struct partial_symtab *);
-static void
-dbx_psymtab_to_symtab PARAMS ((struct partial_symtab *));
-
-static void
-dbx_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *));
-
-static void
-read_dbx_dynamic_symtab PARAMS ((struct objfile * objfile));
+static void read_dbx_dynamic_symtab (struct objfile *objfile);
-static void
-read_dbx_symtab PARAMS ((struct objfile *));
+static void read_dbx_symtab (struct objfile *);
-static void
-free_bincl_list PARAMS ((struct objfile *));
+static void free_bincl_list (struct objfile *);
-static struct partial_symtab *
- find_corresponding_bincl_psymtab PARAMS ((char *, int));
+static struct partial_symtab *find_corresponding_bincl_psymtab (char *, int);
-static void
-add_bincl_to_list PARAMS ((struct partial_symtab *, char *, int));
+static void add_bincl_to_list (struct partial_symtab *, char *, int);
-static void
-init_bincl_list PARAMS ((int, struct objfile *));
+static void init_bincl_list (int, struct objfile *);
-static char *
- dbx_next_symbol_text PARAMS ((struct objfile *));
+static char *dbx_next_symbol_text (struct objfile *);
-static void
-fill_symbuf PARAMS ((bfd *));
+static void fill_symbuf (bfd *);
-static void
-dbx_symfile_init PARAMS ((struct objfile *));
+static void dbx_symfile_init (struct objfile *);
-static void
-dbx_new_init PARAMS ((struct objfile *));
+static void dbx_new_init (struct objfile *);
-static void
-dbx_symfile_read PARAMS ((struct objfile *, int));
+static void dbx_symfile_read (struct objfile *, int);
-static void
-dbx_symfile_finish PARAMS ((struct objfile *));
+static void dbx_symfile_finish (struct objfile *);
-static void
-record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *));
+static void record_minimal_symbol (char *, CORE_ADDR, int, struct objfile *);
-static void
-add_new_header_file PARAMS ((char *, int));
+static void add_new_header_file (char *, int);
-static void
-add_old_header_file PARAMS ((char *, int));
+static void add_old_header_file (char *, int);
-static void
-add_this_object_header_file PARAMS ((int));
+static void add_this_object_header_file (int);
-static struct partial_symtab *
-start_psymtab PARAMS ((struct objfile *, char *, CORE_ADDR, int,
- struct partial_symbol **, struct partial_symbol **));
+static struct partial_symtab *start_psymtab (struct objfile *, char *,
+ CORE_ADDR, int,
+ struct partial_symbol **,
+ struct partial_symbol **);
/* Free up old header file tables */
-static void
-free_header_files ()
+void
+free_header_files (void)
{
if (this_object_header_files)
{
- free ((PTR) this_object_header_files);
+ xfree (this_object_header_files);
this_object_header_files = NULL;
}
n_allocated_this_object_header_files = 0;
/* Allocate new header file tables */
-static void
-init_header_files ()
+void
+init_header_files (void)
{
n_allocated_this_object_header_files = 10;
this_object_header_files = (int *) xmalloc (10 * sizeof (int));
at the next successive FILENUM. */
static void
-add_this_object_header_file (i)
- int i;
+add_this_object_header_file (int i)
{
if (n_this_object_header_files == n_allocated_this_object_header_files)
{
symbol tables for the same header file. */
static void
-add_old_header_file (name, instance)
- char *name;
- int instance;
+add_old_header_file (char *name, int instance)
{
register struct header_file *p = HEADER_FILES (current_objfile);
register int i;
add_this_object_header_file (i);
return;
}
- complain (&repeated_header_complaint, name, symnum);
+ repeated_header_complaint (name, symnum);
}
/* Add to this file a "new" header file: definitions for its types follow.
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;
+add_new_header_file (char *name, int instance)
{
register int i;
register struct header_file *hfile;
#if 0
static struct type **
-explicit_lookup_type (real_filenum, index)
- int real_filenum, index;
+explicit_lookup_type (int real_filenum, int index)
{
register struct header_file *f = &HEADER_FILES (current_objfile)[real_filenum];
#endif
\f
static void
-record_minimal_symbol (name, address, type, objfile)
- char *name;
- CORE_ADDR address;
- int type;
- struct objfile *objfile;
+record_minimal_symbol (char *name, CORE_ADDR address, int type,
+ struct objfile *objfile)
{
enum minimal_symbol_type ms_type;
int section;
char *tempstring = name;
if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd))
++tempstring;
- if (VTBL_PREFIX_P ((tempstring)))
+ if (is_vtable_name (tempstring))
ms_type = mst_data;
}
section = SECT_OFF_DATA (objfile);
table (as opposed to a shared lib or dynamically loaded file). */
static void
-dbx_symfile_read (objfile, mainline)
- struct objfile *objfile;
- int mainline; /* FIXME comments above */
+dbx_symfile_read (struct objfile *objfile, int mainline)
{
bfd *sym_bfd;
int val;
/* If we are reinitializing, or if we have never loaded syms yet, init */
if (mainline
- || objfile->global_psymbols.size == 0
- || objfile->static_psymbols.size == 0)
+ || (objfile->global_psymbols.size == 0
+ && objfile->static_psymbols.size == 0))
init_psymbol_list (objfile, DBX_SYMCOUNT (objfile));
symbol_size = DBX_SYMBOL_SIZE (objfile);
file, e.g. a shared library). */
static void
-dbx_new_init (ignore)
- struct objfile *ignore;
+dbx_new_init (struct objfile *ignore)
{
stabsread_new_init ();
buildsym_new_init ();
#define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */
static void
-dbx_symfile_init (objfile)
- struct objfile *objfile;
+dbx_symfile_init (struct objfile *objfile)
{
int val;
bfd *sym_bfd = objfile->obfd;
/* Allocate struct to keep track of the symfile */
objfile->sym_stab_info = (struct dbx_symfile_info *)
xmmalloc (objfile->md, sizeof (struct dbx_symfile_info));
- memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info));
+ memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info));
DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text");
DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data");
if (val < 0)
perror_with_name (name);
- memset ((PTR) size_temp, 0, sizeof (size_temp));
- val = bfd_read ((PTR) size_temp, sizeof (size_temp), 1, sym_bfd);
+ memset (size_temp, 0, sizeof (size_temp));
+ val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd);
if (val < 0)
{
perror_with_name (name);
val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET);
if (val < 0)
perror_with_name (name);
- val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1,
- sym_bfd);
+ val = bfd_bread (DBX_STRINGTAB (objfile),
+ DBX_STRINGTAB_SIZE (objfile),
+ sym_bfd);
if (val != DBX_STRINGTAB_SIZE (objfile))
perror_with_name (name);
}
objfile struct from the global list of known objfiles. */
static void
-dbx_symfile_finish (objfile)
- struct objfile *objfile;
+dbx_symfile_finish (struct objfile *objfile)
{
if (objfile->sym_stab_info != NULL)
{
while (--i >= 0)
{
- free (hfiles[i].name);
- free (hfiles[i].vector);
+ xfree (hfiles[i].name);
+ xfree (hfiles[i].vector);
}
- free ((PTR) hfiles);
+ xfree (hfiles);
}
- mfree (objfile->md, objfile->sym_stab_info);
+ xmfree (objfile->md, objfile->sym_stab_info);
}
free_header_files ();
}
static int symbuf_idx;
static int symbuf_end;
-/* cont_elem is used for continuing information in cfront.
- It saves information about which types need to be fixed up and
- completed after all the stabs are read. */
-struct cont_elem
- {
- /* sym and stabsstring for continuing information in cfront */
- struct symbol *sym;
- char *stabs;
- /* state dependancies (statics that must be preserved) */
- int sym_idx;
- int sym_end;
- int symnum;
- int (*func) PARAMS ((struct objfile *, struct symbol *, char *));
- /* other state dependancies include:
- (assumption is that these will not change since process_now FIXME!!)
- stringtab_global
- n_stabs
- objfile
- symfile_bfd */
- };
-
-static struct cont_elem *cont_list = 0;
-static int cont_limit = 0;
-static int cont_count = 0;
-
-/* Arrange for function F to be called with arguments SYM and P later
- in the stabs reading process. */
-void
-process_later (sym, p, f)
- struct symbol *sym;
- char *p;
- int (*f) PARAMS ((struct objfile *, struct symbol *, char *));
-{
-
- /* Allocate more space for the deferred list. */
- if (cont_count >= cont_limit - 1)
- {
- cont_limit += 32; /* chunk size */
-
- cont_list
- = (struct cont_elem *) xrealloc (cont_list,
- (cont_limit
- * sizeof (struct cont_elem)));
- if (!cont_list)
- error ("Virtual memory exhausted\n");
- }
-
- /* Save state variables so we can process these stabs later. */
- cont_list[cont_count].sym_idx = symbuf_idx;
- cont_list[cont_count].sym_end = symbuf_end;
- cont_list[cont_count].symnum = symnum;
- cont_list[cont_count].sym = sym;
- cont_list[cont_count].stabs = p;
- cont_list[cont_count].func = f;
- cont_count++;
-}
-
-/* Call deferred funtions in CONT_LIST. */
-
-static void
-process_now (objfile)
- struct objfile *objfile;
-{
- int i;
- int save_symbuf_idx;
- int save_symbuf_end;
- int save_symnum;
- struct symbol *sym;
- char *stabs;
- int err;
- int (*func) PARAMS ((struct objfile *, struct symbol *, char *));
-
- /* Save the state of our caller, we'll want to restore it before
- returning. */
- save_symbuf_idx = symbuf_idx;
- save_symbuf_end = symbuf_end;
- save_symnum = symnum;
-
- /* Iterate over all the deferred stabs. */
- for (i = 0; i < cont_count; i++)
- {
- /* Restore the state for this deferred stab. */
- symbuf_idx = cont_list[i].sym_idx;
- symbuf_end = cont_list[i].sym_end;
- symnum = cont_list[i].symnum;
- sym = cont_list[i].sym;
- stabs = cont_list[i].stabs;
- func = cont_list[i].func;
-
- /* Call the function to handle this deferrd stab. */
- err = (*func) (objfile, sym, stabs);
- if (err)
- error ("Internal error: unable to resolve stab.\n");
- }
-
- /* Restore our caller's state. */
- symbuf_idx = save_symbuf_idx;
- symbuf_end = save_symbuf_end;
- symnum = save_symnum;
- cont_count = 0;
-}
-
+#if 0 /* OBSOLETE CFront */
+// OBSOLETE /* cont_elem is used for continuing information in cfront.
+// OBSOLETE It saves information about which types need to be fixed up and
+// OBSOLETE completed after all the stabs are read. */
+// OBSOLETE struct cont_elem
+// OBSOLETE {
+// OBSOLETE /* sym and stabstring for continuing information in cfront */
+// OBSOLETE struct symbol *sym;
+// OBSOLETE char *stabs;
+// OBSOLETE /* state dependencies (statics that must be preserved) */
+// OBSOLETE int sym_idx;
+// OBSOLETE int sym_end;
+// OBSOLETE int symnum;
+// OBSOLETE int (*func) (struct objfile *, struct symbol *, char *);
+// OBSOLETE /* other state dependencies include:
+// OBSOLETE (assumption is that these will not change since process_now FIXME!!)
+// OBSOLETE stringtab_global
+// OBSOLETE n_stabs
+// OBSOLETE objfile
+// OBSOLETE symfile_bfd */
+// OBSOLETE };
+
+// OBSOLETE static struct cont_elem *cont_list = 0;
+// OBSOLETE static int cont_limit = 0;
+// OBSOLETE static int cont_count = 0;
+
+// OBSOLETE /* Arrange for function F to be called with arguments SYM and P later
+// OBSOLETE in the stabs reading process. */
+// OBSOLETE void
+// OBSOLETE process_later (struct symbol *sym, char *p,
+// OBSOLETE int (*f) (struct objfile *, struct symbol *, char *))
+// OBSOLETE {
+
+// OBSOLETE /* Allocate more space for the deferred list. */
+// OBSOLETE if (cont_count >= cont_limit - 1)
+// OBSOLETE {
+// OBSOLETE cont_limit += 32; /* chunk size */
+
+// OBSOLETE cont_list
+// OBSOLETE = (struct cont_elem *) xrealloc (cont_list,
+// OBSOLETE (cont_limit
+// OBSOLETE * sizeof (struct cont_elem)));
+// OBSOLETE if (!cont_list)
+// OBSOLETE error ("Virtual memory exhausted\n");
+// OBSOLETE }
+
+// OBSOLETE /* Save state variables so we can process these stabs later. */
+// OBSOLETE cont_list[cont_count].sym_idx = symbuf_idx;
+// OBSOLETE cont_list[cont_count].sym_end = symbuf_end;
+// OBSOLETE cont_list[cont_count].symnum = symnum;
+// OBSOLETE cont_list[cont_count].sym = sym;
+// OBSOLETE cont_list[cont_count].stabs = p;
+// OBSOLETE cont_list[cont_count].func = f;
+// OBSOLETE cont_count++;
+// OBSOLETE }
+
+// OBSOLETE /* Call deferred funtions in CONT_LIST. */
+
+// OBSOLETE static void
+// OBSOLETE process_now (struct objfile *objfile)
+// OBSOLETE {
+// OBSOLETE int i;
+// OBSOLETE int save_symbuf_idx;
+// OBSOLETE int save_symbuf_end;
+// OBSOLETE int save_symnum;
+// OBSOLETE struct symbol *sym;
+// OBSOLETE char *stabs;
+// OBSOLETE int err;
+// OBSOLETE int (*func) (struct objfile *, struct symbol *, char *);
+
+// OBSOLETE /* Save the state of our caller, we'll want to restore it before
+// OBSOLETE returning. */
+// OBSOLETE save_symbuf_idx = symbuf_idx;
+// OBSOLETE save_symbuf_end = symbuf_end;
+// OBSOLETE save_symnum = symnum;
+
+// OBSOLETE /* Iterate over all the deferred stabs. */
+// OBSOLETE for (i = 0; i < cont_count; i++)
+// OBSOLETE {
+// OBSOLETE /* Restore the state for this deferred stab. */
+// OBSOLETE symbuf_idx = cont_list[i].sym_idx;
+// OBSOLETE symbuf_end = cont_list[i].sym_end;
+// OBSOLETE symnum = cont_list[i].symnum;
+// OBSOLETE sym = cont_list[i].sym;
+// OBSOLETE stabs = cont_list[i].stabs;
+// OBSOLETE func = cont_list[i].func;
+
+// OBSOLETE /* Call the function to handle this deferrd stab. */
+// OBSOLETE err = (*func) (objfile, sym, stabs);
+// OBSOLETE if (err)
+// OBSOLETE error ("Internal error: unable to resolve stab.\n");
+// OBSOLETE }
+
+// OBSOLETE /* Restore our caller's state. */
+// OBSOLETE symbuf_idx = save_symbuf_idx;
+// OBSOLETE symbuf_end = save_symbuf_end;
+// OBSOLETE symnum = save_symnum;
+// OBSOLETE cont_count = 0;
+// OBSOLETE }
+#endif /* OBSOLETE CFront */
/* Name of last function encountered. Used in Solaris to approximate
object file boundaries. */
(into the string table) but this does no harm. */
static void
-fill_symbuf (sym_bfd)
- bfd *sym_bfd;
+fill_symbuf (bfd *sym_bfd)
{
unsigned int count;
int nbytes;
count = sizeof (symbuf);
}
- nbytes = bfd_read ((PTR) symbuf, count, 1, sym_bfd);
+ nbytes = bfd_bread (symbuf, count, sym_bfd);
if (nbytes < 0)
perror_with_name (bfd_get_filename (sym_bfd));
else if (nbytes == 0)
symbuf_read += nbytes;
}
-#define SWAP_SYMBOL(symp, abfd) \
- { \
- (symp)->n_strx = bfd_h_get_32(abfd, \
- (unsigned char *)&(symp)->n_strx); \
- (symp)->n_desc = bfd_h_get_16 (abfd, \
- (unsigned char *)&(symp)->n_desc); \
- (symp)->n_value = bfd_h_get_32 (abfd, \
- (unsigned char *)&(symp)->n_value); \
- }
-
#define INTERNALIZE_SYMBOL(intern, extern, abfd) \
{ \
(intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \
(intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \
(intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \
- (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \
+ if (bfd_get_sign_extend_vma (abfd)) \
+ (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \
+ else \
+ (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \
}
/* Invariant: The symbol pointed to by symbuf_idx is the first one
call this function to get the continuation. */
static char *
-dbx_next_symbol_text (objfile)
- struct objfile *objfile;
+dbx_next_symbol_text (struct objfile *objfile)
{
struct internal_nlist nlist;
allocated. */
static void
-init_bincl_list (number, objfile)
- int number;
- struct objfile *objfile;
+init_bincl_list (int number, struct objfile *objfile)
{
bincls_allocated = number;
next_bincl = bincl_list = (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;
+add_bincl_to_list (struct partial_symtab *pst, char *name, int instance)
{
if (next_bincl >= bincl_list + bincls_allocated)
{
with that header_file_location. */
static struct partial_symtab *
-find_corresponding_bincl_psymtab (name, instance)
- char *name;
- int instance;
+find_corresponding_bincl_psymtab (char *name, int instance)
{
struct header_file_location *bincl;
&& STREQ (name, bincl->name))
return bincl->pst;
- complain (&repeated_header_complaint, name, symnum);
+ repeated_header_complaint (name, symnum);
return (struct partial_symtab *) 0;
}
/* Free the storage allocated for the bincl list. */
static void
-free_bincl_list (objfile)
- struct objfile *objfile;
+free_bincl_list (struct objfile *objfile)
{
- mfree (objfile->md, (PTR) bincl_list);
+ xmfree (objfile->md, bincl_list);
bincls_allocated = 0;
}
return make_cleanup (do_free_bincl_list_cleanup, objfile);
}
+/* Set namestring based on nlist. If the string table index is invalid,
+ give a fake name, and print a single error message per symbol file read,
+ rather than abort the symbol reading or flood the user with messages. */
+
+static char *
+set_namestring (struct objfile *objfile, struct internal_nlist nlist)
+{
+ char *namestring;
+
+ if (((unsigned) nlist.n_strx + file_string_table_offset) >=
+ DBX_STRINGTAB_SIZE (objfile))
+ {
+ complaint (&symfile_complaints, "bad string table offset in symbol %d",
+ symnum);
+ namestring = "<bad string table offset>";
+ }
+ else
+ namestring = nlist.n_strx + file_string_table_offset +
+ DBX_STRINGTAB (objfile);
+ return namestring;
+}
+
/* Scan a SunOs dynamic symbol table for symbols of interest and
add them to the minimal symbol table. */
static void
-read_dbx_dynamic_symtab (objfile)
- struct objfile *objfile;
+read_dbx_dynamic_symtab (struct objfile *objfile)
{
bfd *abfd = objfile->obfd;
struct cleanup *back_to;
return;
dynsyms = (asymbol **) xmalloc (dynsym_size);
- back_to = make_cleanup (free, dynsyms);
+ back_to = make_cleanup (xfree, dynsyms);
dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms);
if (dynsym_count < 0)
}
dynrels = (arelent **) xmalloc (dynrel_size);
- make_cleanup (free, dynrels);
+ make_cleanup (xfree, dynrels);
dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms);
if (dynrel_count < 0)
do_cleanups (back_to);
}
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+CORE_ADDR
+find_stab_function_addr (char *namestring, char *filename,
+ struct objfile *objfile)
+{
+ struct minimal_symbol *msym;
+ char *p;
+ int n;
+
+ p = strchr (namestring, ':');
+ if (p == NULL)
+ p = namestring;
+ n = p - namestring;
+ p = alloca (n + 2);
+ strncpy (p, namestring, n);
+ p[n] = 0;
+
+ msym = lookup_minimal_symbol (p, filename, objfile);
+ if (msym == NULL)
+ {
+ /* Sun Fortran appends an underscore to the minimal symbol name,
+ try again with an appended underscore if the minimal symbol
+ was not found. */
+ p[n] = '_';
+ p[n + 1] = 0;
+ msym = lookup_minimal_symbol (p, filename, objfile);
+ }
+
+ if (msym == NULL && filename != NULL)
+ {
+ /* Try again without the filename. */
+ p[n] = 0;
+ msym = lookup_minimal_symbol (p, NULL, objfile);
+ }
+ if (msym == NULL && filename != NULL)
+ {
+ /* And try again for Sun Fortran, but without the filename. */
+ p[n] = '_';
+ p[n + 1] = 0;
+ msym = lookup_minimal_symbol (p, NULL, objfile);
+ }
+
+ return msym == NULL ? 0 : SYMBOL_VALUE_ADDRESS (msym);
+}
+#endif /* SOFUN_ADDRESS_MAYBE_MISSING */
+
+static void
+function_outside_compilation_unit_complaint (const char *arg1)
+{
+ complaint (&symfile_complaints,
+ "function `%s' appears to be defined outside of all compilation units",
+ arg1);
+}
+
/* Setup partial_symtab's describing each source file for which
debugging information is available. */
static void
-read_dbx_symtab (objfile)
- struct objfile *objfile;
+read_dbx_symtab (struct objfile *objfile)
{
register struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */
struct internal_nlist nlist;
*) The addition of a partial symbol the the two partial
symbol lists. This last is a large section of code, so
I've imbedded it in the following macro.
- */
+ */
-/* Set namestring based on nlist. If the string table index is invalid,
- give a fake name, and print a single error message per symbol file read,
- rather than abort the symbol reading or flood the user with messages. */
+ switch (nlist.n_type)
+ {
+ char *p;
+ /*
+ * Standard, external, non-debugger, symbols
+ */
+
+ case N_TEXT | N_EXT:
+ case N_NBTEXT | N_EXT:
+ nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+ goto record_it;
+
+ case N_DATA | N_EXT:
+ case N_NBDATA | N_EXT:
+ nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
+ goto record_it;
+
+ case N_BSS:
+ case N_BSS | N_EXT:
+ case N_NBBSS | N_EXT:
+ case N_SETV | N_EXT: /* FIXME, is this in BSS? */
+ nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
+ goto record_it;
+
+ case N_ABS | N_EXT:
+ record_it:
+ namestring = set_namestring (objfile, nlist);
+
+ bss_ext_symbol:
+ record_minimal_symbol (namestring, nlist.n_value,
+ nlist.n_type, objfile); /* Always */
+ continue;
+
+ /* Standard, local, non-debugger, symbols */
+
+ case N_NBTEXT:
+
+ /* We need to be able to deal with both N_FN or N_TEXT,
+ because we have no way of knowing whether the sys-supplied ld
+ or GNU ld was used to make the executable. Sequents throw
+ in another wrinkle -- they renumbered N_FN. */
+
+ case N_FN:
+ case N_FN_SEQ:
+ case N_TEXT:
+ nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+ namestring = set_namestring (objfile, nlist);
+
+ if ((namestring[0] == '-' && namestring[1] == 'l')
+ || (namestring[(nsl = strlen (namestring)) - 1] == 'o'
+ && namestring[nsl - 2] == '.'))
+ {
+ if (objfile->ei.entry_point < nlist.n_value &&
+ objfile->ei.entry_point >= last_o_file_start)
+ {
+ objfile->ei.entry_file_lowpc = last_o_file_start;
+ objfile->ei.entry_file_highpc = nlist.n_value;
+ }
+ if (past_first_source_file && pst
+ /* The gould NP1 uses low values for .o and -l symbols
+ which are not the address. */
+ && nlist.n_value >= pst->textlow)
+ {
+ end_psymtab (pst, psymtab_include_list, includes_used,
+ symnum * symbol_size,
+ nlist.n_value > pst->texthigh
+ ? nlist.n_value : pst->texthigh,
+ dependency_list, dependencies_used, textlow_not_set);
+ pst = (struct partial_symtab *) 0;
+ includes_used = 0;
+ dependencies_used = 0;
+ }
+ else
+ past_first_source_file = 1;
+ last_o_file_start = nlist.n_value;
+ }
+ else
+ goto record_it;
+ continue;
+
+ case N_DATA:
+ nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
+ goto record_it;
+
+ case N_UNDF | N_EXT:
+ if (nlist.n_value != 0)
+ {
+ /* This is a "Fortran COMMON" symbol. See if the target
+ environment knows where it has been relocated to. */
+
+ CORE_ADDR reladdr;
+
+ namestring = set_namestring (objfile, nlist);
+ if (target_lookup_symbol (namestring, &reladdr))
+ {
+ continue; /* Error in lookup; ignore symbol for now. */
+ }
+ nlist.n_type ^= (N_BSS ^ N_UNDF); /* Define it as a bss-symbol */
+ nlist.n_value = reladdr;
+ goto bss_ext_symbol;
+ }
+ continue; /* Just undefined, not COMMON */
+
+ case N_UNDF:
+ if (processing_acc_compilation && nlist.n_strx == 1)
+ {
+ /* Deal with relative offsets in the string table
+ used in ELF+STAB under Solaris. If we want to use the
+ n_strx field, which contains the name of the file,
+ we must adjust file_string_table_offset *before* calling
+ set_namestring(). */
+ past_first_source_file = 1;
+ file_string_table_offset = next_file_string_table_offset;
+ next_file_string_table_offset =
+ file_string_table_offset + nlist.n_value;
+ if (next_file_string_table_offset < file_string_table_offset)
+ error ("string table offset backs up at %d", symnum);
+ /* FIXME -- replace error() with complaint. */
+ continue;
+ }
+ continue;
+
+ /* Lots of symbol types we can just ignore. */
+
+ case N_ABS:
+ case N_NBDATA:
+ case N_NBBSS:
+ continue;
+
+ /* Keep going . . . */
+
+ /*
+ * Special symbol types for GNU
+ */
+ case N_INDR:
+ case N_INDR | N_EXT:
+ 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:
+ continue;
+
+ /*
+ * Debugger symbols
+ */
+
+ case N_SO:
+ {
+ CORE_ADDR valu;
+ static int prev_so_symnum = -10;
+ static int first_so_symnum;
+ char *p;
+ int prev_textlow_not_set;
+
+ valu = nlist.n_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+
+ prev_textlow_not_set = textlow_not_set;
+
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* A zero value is probably an indication for the SunPRO 3.0
+ compiler. end_psymtab explicitly tests for zero, so
+ don't relocate it. */
-/*FIXME: Too many adds and indirections in here for the inner loop. */
-#define SET_NAMESTRING()\
- if (((unsigned)CUR_SYMBOL_STRX + file_string_table_offset) >= \
- DBX_STRINGTAB_SIZE (objfile)) { \
- complain (&string_table_offset_complaint, symnum); \
- namestring = "<bad string table offset>"; \
- } else \
- namestring = CUR_SYMBOL_STRX + file_string_table_offset + \
- DBX_STRINGTAB (objfile)
-
-#define CUR_SYMBOL_TYPE nlist.n_type
-#define CUR_SYMBOL_VALUE nlist.n_value
-#define CUR_SYMBOL_STRX nlist.n_strx
-#define DBXREAD_ONLY
-#define START_PSYMTAB(ofile,fname,low,symoff,global_syms,static_syms)\
- start_psymtab(ofile, fname, low, symoff, global_syms, static_syms)
-#define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set)\
- end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set)
-
-#include "partial-stab.h"
+ if (nlist.n_value == 0)
+ {
+ textlow_not_set = 1;
+ valu = 0;
+ }
+ else
+ textlow_not_set = 0;
+#else
+ textlow_not_set = 0;
+#endif
+ past_first_source_file = 1;
+
+ if (prev_so_symnum != symnum - 1)
+ { /* Here if prev stab wasn't N_SO */
+ first_so_symnum = symnum;
+
+ if (pst)
+ {
+ end_psymtab (pst, psymtab_include_list, includes_used,
+ symnum * symbol_size,
+ valu > pst->texthigh ? valu : pst->texthigh,
+ dependency_list, dependencies_used,
+ prev_textlow_not_set);
+ pst = (struct partial_symtab *) 0;
+ includes_used = 0;
+ dependencies_used = 0;
+ }
+ }
+
+ prev_so_symnum = symnum;
+
+ /* End the current partial symtab and start a new one */
+
+ namestring = set_namestring (objfile, nlist);
+
+ /* Null name means end of .o file. Don't start a new one. */
+ if (*namestring == '\000')
+ continue;
+
+ /* Some compilers (including gcc) emit a pair of initial N_SOs.
+ The first one is a directory name; the second the file name.
+ If pst exists, is empty, and has a filename ending in '/',
+ we assume the previous N_SO was a directory name. */
+
+ p = strrchr (namestring, '/');
+ if (p && *(p + 1) == '\000')
+ continue; /* Simply ignore directory name SOs */
+
+ /* Some other compilers (C++ ones in particular) emit useless
+ SOs for non-existant .c files. We ignore all subsequent SOs that
+ immediately follow the first. */
+
+ if (!pst)
+ pst = start_psymtab (objfile,
+ namestring, valu,
+ first_so_symnum * symbol_size,
+ objfile->global_psymbols.next,
+ objfile->static_psymbols.next);
+ continue;
+ }
+
+ case N_BINCL:
+ {
+ enum language tmp_language;
+ /* 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 returns */
+
+ namestring = set_namestring (objfile, nlist);
+ tmp_language = deduce_language_from_filename (namestring);
+
+ /* Only change the psymtab's language if we've learned
+ something useful (eg. tmp_language is not language_unknown).
+ In addition, to match what start_subfile does, never change
+ from C++ to C. */
+ if (tmp_language != language_unknown
+ && (tmp_language != language_c
+ || psymtab_language != language_cplus))
+ psymtab_language = tmp_language;
+
+ if (pst == NULL)
+ {
+ /* FIXME: we should not get here without a PST to work on.
+ Attempt to recover. */
+ complaint (&symfile_complaints,
+ "N_BINCL %s not in entries for any file, at symtab pos %d",
+ namestring, symnum);
+ continue;
+ }
+ add_bincl_to_list (pst, namestring, nlist.n_value);
+
+ /* Mark down an include file in the current psymtab */
+
+ goto record_include_file;
+ }
+
+ case N_SOL:
+ {
+ enum language tmp_language;
+ /* Mark down an include file in the current psymtab */
+
+ namestring = set_namestring (objfile, nlist);
+ tmp_language = deduce_language_from_filename (namestring);
+
+ /* Only change the psymtab's language if we've learned
+ something useful (eg. tmp_language is not language_unknown).
+ In addition, to match what start_subfile does, never change
+ from C++ to C. */
+ if (tmp_language != language_unknown
+ && (tmp_language != language_c
+ || psymtab_language != language_cplus))
+ psymtab_language = tmp_language;
+
+ /* In C++, one may expect the same filename to come round many
+ times, when code is coming alternately from the main file
+ and from inline functions in other files. So I check to see
+ if this is a file we've seen before -- either the main
+ source file, or a previously included file.
+
+ This seems to be a lot of time to be spending on N_SOL, but
+ things like "break c-exp.y:435" need to work (I
+ suppose the psymtab_include_list could be hashed or put
+ in a binary tree, if profiling shows this is a major hog). */
+ if (pst && STREQ (namestring, pst->filename))
+ continue;
+ {
+ register int i;
+ for (i = 0; i < includes_used; i++)
+ if (STREQ (namestring, psymtab_include_list[i]))
+ {
+ i = -1;
+ break;
+ }
+ if (i == -1)
+ continue;
+ }
+
+ record_include_file:
+
+ 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 *));
+ memcpy (psymtab_include_list, orig,
+ includes_used * sizeof (char *));
+ }
+ continue;
+ }
+ case N_LSYM: /* Typedef or automatic variable. */
+ case N_STSYM: /* Data seg var -- static */
+ case N_LCSYM: /* BSS " */
+ case N_ROSYM: /* Read-only data seg var -- static. */
+ case N_NBSTS: /* Gould nobase. */
+ case N_NBLCS: /* symbols. */
+ case N_FUN:
+ case N_GSYM: /* Global (extern) variable; can be
+ data or bss (sigh FIXME). */
+
+ /* Following may probably be ignored; I'll leave them here
+ for now (until I do Pascal and Modula 2 extensions). */
+
+ case N_PC: /* I may or may not need this; I
+ suspect not. */
+ case N_M2C: /* I suspect that I can ignore this here. */
+ case N_SCOPE: /* Same. */
+
+ namestring = set_namestring (objfile, nlist);
+
+ /* See if this is an end of function stab. */
+ if (pst && nlist.n_type == N_FUN && *namestring == '\000')
+ {
+ CORE_ADDR valu;
+
+ /* It's value is the size (in bytes) of the function for
+ function relative stabs, or the address of the function's
+ end for old style stabs. */
+ valu = nlist.n_value + last_function_start;
+ if (pst->texthigh == 0 || valu > pst->texthigh)
+ pst->texthigh = valu;
+ break;
+ }
+
+ p = (char *) strchr (namestring, ':');
+ if (!p)
+ continue; /* Not a debugging symbol. */
+
+
+
+ /* Main processing section for debugging symbols which
+ the initial read through the symbol tables needs to worry
+ about. If we reach this point, the symbol which we are
+ considering is definitely one we are interested in.
+ p must also contain the (valid) index into the namestring
+ which indicates the debugging type symbol. */
+
+ switch (p[1])
+ {
+ case 'S':
+ nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
+#ifdef STATIC_TRANSFORM_NAME
+ namestring = STATIC_TRANSFORM_NAME (namestring);
+#endif
+ add_psymbol_to_list (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_STATIC,
+ &objfile->static_psymbols,
+ 0, nlist.n_value,
+ psymtab_language, objfile);
+ continue;
+ case 'G':
+ nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
+ /* The addresses in these entries are reported to be
+ wrong. See the code that reads 'G's for symtabs. */
+ add_psymbol_to_list (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_STATIC,
+ &objfile->global_psymbols,
+ 0, nlist.n_value,
+ psymtab_language, objfile);
+ continue;
+
+ case 'T':
+ /* When a 'T' entry is defining an anonymous enum, it
+ may have a name which is the empty string, or a
+ single space. Since they're not really defining a
+ symbol, those shouldn't go in the partial symbol
+ table. We do pick up the elements of such enums at
+ 'check_enum:', below. */
+ if (p >= namestring + 2
+ || (p == namestring + 1
+ && namestring[0] != ' '))
+ {
+ add_psymbol_to_list (namestring, p - namestring,
+ STRUCT_NAMESPACE, LOC_TYPEDEF,
+ &objfile->static_psymbols,
+ nlist.n_value, 0,
+ psymtab_language, objfile);
+ if (p[2] == 't')
+ {
+ /* Also a typedef with the same name. */
+ add_psymbol_to_list (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_TYPEDEF,
+ &objfile->static_psymbols,
+ nlist.n_value, 0,
+ psymtab_language, objfile);
+ p += 1;
+ }
+#if 0 /* OBSOLETE CFront */
+// OBSOLETE /* The semantics of C++ state that "struct foo { ... }"
+// OBSOLETE also defines a typedef for "foo". Unfortuantely, cfront
+// OBSOLETE never makes the typedef when translating from C++ to C.
+// OBSOLETE We make the typedef here so that "ptype foo" works as
+// OBSOLETE expected for cfront translated code. */
+// OBSOLETE else if (psymtab_language == language_cplus)
+// OBSOLETE {
+// OBSOLETE /* Also a typedef with the same name. */
+// OBSOLETE add_psymbol_to_list (namestring, p - namestring,
+// OBSOLETE VAR_NAMESPACE, LOC_TYPEDEF,
+// OBSOLETE &objfile->static_psymbols,
+// OBSOLETE nlist.n_value, 0,
+// OBSOLETE psymtab_language, objfile);
+// OBSOLETE }
+#endif /* OBSOLETE CFront */
+ }
+ goto check_enum;
+ case 't':
+ if (p != namestring) /* a name is there, not just :T... */
+ {
+ add_psymbol_to_list (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_TYPEDEF,
+ &objfile->static_psymbols,
+ nlist.n_value, 0,
+ psymtab_language, objfile);
+ }
+ check_enum:
+ /* If this is an enumerated type, we need to
+ add all the enum constants to the partial symbol
+ table. This does not cover enums without names, e.g.
+ "enum {a, b} c;" in C, but fortunately those are
+ rare. There is no way for GDB to find those from the
+ enum type without spending too much time on it. Thus
+ to solve this problem, the compiler needs to put out the
+ enum in a nameless type. GCC2 does this. */
+
+ /* We are looking for something of the form
+ <name> ":" ("t" | "T") [<number> "="] "e"
+ {<constant> ":" <value> ","} ";". */
+
+ /* Skip over the colon and the 't' or 'T'. */
+ p += 2;
+ /* This type may be given a number. Also, numbers can come
+ in pairs like (0,26). Skip over it. */
+ while ((*p >= '0' && *p <= '9')
+ || *p == '(' || *p == ',' || *p == ')'
+ || *p == '=')
+ p++;
+
+ if (*p++ == 'e')
+ {
+ /* The aix4 compiler emits extra crud before the members. */
+ if (*p == '-')
+ {
+ /* Skip over the type (?). */
+ while (*p != ':')
+ p++;
+
+ /* Skip over the colon. */
+ p++;
+ }
+
+ /* We have found an enumerated type. */
+ /* According to comments in read_enum_type
+ a comma could end it instead of a semicolon.
+ I don't know where that happens.
+ Accept either. */
+ while (*p && *p != ';' && *p != ',')
+ {
+ char *q;
+
+ /* Check for and handle cretinous dbx symbol name
+ continuation! */
+ if (*p == '\\' || (*p == '?' && p[1] == '\0'))
+ p = next_symbol_text (objfile);
+
+ /* Point to the character after the name
+ of the enum constant. */
+ for (q = p; *q && *q != ':'; q++)
+ ;
+ /* Note that the value doesn't matter for
+ enum constants in psymtabs, just in symtabs. */
+ add_psymbol_to_list (p, q - p,
+ VAR_NAMESPACE, LOC_CONST,
+ &objfile->static_psymbols, 0,
+ 0, psymtab_language, objfile);
+ /* Point past the name. */
+ p = q;
+ /* Skip over the value. */
+ while (*p && *p != ',')
+ p++;
+ /* Advance past the comma. */
+ if (*p)
+ p++;
+ }
+ }
+ continue;
+ case 'c':
+ /* Constant, e.g. from "const" in Pascal. */
+ add_psymbol_to_list (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_CONST,
+ &objfile->static_psymbols, nlist.n_value,
+ 0, psymtab_language, objfile);
+ continue;
+
+ case 'f':
+ if (! pst)
+ {
+ int name_len = p - namestring;
+ char *name = xmalloc (name_len + 1);
+ memcpy (name, namestring, name_len);
+ name[name_len] = '\0';
+ function_outside_compilation_unit_complaint (name);
+ xfree (name);
+ }
+ nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+ /* Kludges for ELF/STABS with Sun ACC */
+ last_function_name = namestring;
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit
+ value for the bottom of the text seg in those cases. */
+ if (nlist.n_value == ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT (objfile)))
+ {
+ CORE_ADDR minsym_valu =
+ find_stab_function_addr (namestring, pst->filename, objfile);
+ /* find_stab_function_addr will return 0 if the minimal
+ symbol wasn't found. (Unfortunately, this might also
+ be a valid address.) Anyway, if it *does* return 0,
+ it is likely that the value was set correctly to begin
+ with... */
+ if (minsym_valu != 0)
+ nlist.n_value = minsym_valu;
+ }
+ if (pst && textlow_not_set)
+ {
+ pst->textlow = nlist.n_value;
+ textlow_not_set = 0;
+ }
+#endif
+ /* End kludge. */
+
+ /* Keep track of the start of the last function so we
+ can handle end of function symbols. */
+ last_function_start = nlist.n_value;
+
+ /* In reordered executables this function may lie outside
+ the bounds created by N_SO symbols. If that's the case
+ use the address of this function as the low bound for
+ the partial symbol table. */
+ if (pst
+ && (textlow_not_set
+ || (nlist.n_value < pst->textlow
+ && (nlist.n_value
+ != ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT (objfile))))))
+ {
+ pst->textlow = nlist.n_value;
+ textlow_not_set = 0;
+ }
+ add_psymbol_to_list (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_BLOCK,
+ &objfile->static_psymbols,
+ 0, nlist.n_value,
+ psymtab_language, objfile);
+ continue;
+
+ /* Global functions were ignored here, but now they
+ are put into the global psymtab like one would expect.
+ They're also in the minimal symbol table. */
+ case 'F':
+ if (! pst)
+ {
+ int name_len = p - namestring;
+ char *name = xmalloc (name_len + 1);
+ memcpy (name, namestring, name_len);
+ name[name_len] = '\0';
+ function_outside_compilation_unit_complaint (name);
+ xfree (name);
+ }
+ nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+ /* Kludges for ELF/STABS with Sun ACC */
+ last_function_name = namestring;
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit
+ value for the bottom of the text seg in those cases. */
+ if (nlist.n_value == ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT (objfile)))
+ {
+ CORE_ADDR minsym_valu =
+ find_stab_function_addr (namestring, pst->filename, objfile);
+ /* find_stab_function_addr will return 0 if the minimal
+ symbol wasn't found. (Unfortunately, this might also
+ be a valid address.) Anyway, if it *does* return 0,
+ it is likely that the value was set correctly to begin
+ with... */
+ if (minsym_valu != 0)
+ nlist.n_value = minsym_valu;
+ }
+ if (pst && textlow_not_set)
+ {
+ pst->textlow = nlist.n_value;
+ textlow_not_set = 0;
+ }
+#endif
+ /* End kludge. */
+
+ /* Keep track of the start of the last function so we
+ can handle end of function symbols. */
+ last_function_start = nlist.n_value;
+
+ /* In reordered executables this function may lie outside
+ the bounds created by N_SO symbols. If that's the case
+ use the address of this function as the low bound for
+ the partial symbol table. */
+ if (pst
+ && (textlow_not_set
+ || (nlist.n_value < pst->textlow
+ && (nlist.n_value
+ != ANOFFSET (objfile->section_offsets,
+ SECT_OFF_TEXT (objfile))))))
+ {
+ pst->textlow = nlist.n_value;
+ textlow_not_set = 0;
+ }
+ add_psymbol_to_list (namestring, p - namestring,
+ VAR_NAMESPACE, LOC_BLOCK,
+ &objfile->global_psymbols,
+ 0, nlist.n_value,
+ psymtab_language, objfile);
+ continue;
+
+ /* Two things show up here (hopefully); static symbols of
+ local scope (static used inside braces) or extensions
+ of structure symbols. We can ignore both. */
+ case 'V':
+ case '(':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case '-':
+ case '#': /* for symbol identification (used in live ranges) */
+#if 0 /* OBSOLETE CFront */
+// OBSOLETE /* added to support cfront stabs strings */
+// OBSOLETE case 'Z': /* for definition continuations */
+// OBSOLETE case 'P': /* for prototypes */
+#endif /* OBSOLETE CFront */
+ continue;
+
+ case ':':
+ /* It is a C++ nested symbol. We don't need to record it
+ (I don't think); if we try to look up foo::bar::baz,
+ then symbols for the symtab containing foo should get
+ read in, I think. */
+ /* Someone says sun cc puts out symbols like
+ /foo/baz/maclib::/usr/local/bin/maclib,
+ which would get here with a symbol type of ':'. */
+ continue;
+
+ default:
+ /* Unexpected symbol descriptor. The second and subsequent stabs
+ of a continued stab can show up here. The question is
+ whether they ever can mimic a normal stab--it would be
+ nice if not, since we certainly don't want to spend the
+ time searching to the end of every string looking for
+ a backslash. */
+
+ complaint (&symfile_complaints, "unknown symbol descriptor `%c'",
+ p[1]);
+
+ /* Ignore it; perhaps it is an extension that we don't
+ know about. */
+ continue;
+ }
+
+ case N_EXCL:
+
+ namestring = set_namestring (objfile, nlist);
+
+ /* Find the corresponding bincl and mark that psymtab on the
+ psymtab dependency list */
+ {
+ struct partial_symtab *needed_pst =
+ find_corresponding_bincl_psymtab (namestring, nlist.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 *));
+ memcpy (dependency_list, orig,
+ (dependencies_used
+ * sizeof (struct partial_symtab *)));
+#ifdef DEBUG_INFO
+ fprintf_unfiltered (gdb_stderr, "Had to reallocate dependency list.\n");
+ fprintf_unfiltered (gdb_stderr, "New dependencies allocated: %d\n",
+ dependencies_allocated);
+#endif
+ }
+ }
+ }
+ continue;
+
+ case N_ENDM:
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* Solaris 2 end of module, finish current partial symbol table.
+ end_psymtab will set pst->texthigh to the proper value, which
+ is necessary if a module compiled without debugging info
+ follows this module. */
+ if (pst)
+ {
+ end_psymtab (pst, psymtab_include_list, includes_used,
+ symnum * symbol_size,
+ (CORE_ADDR) 0,
+ dependency_list, dependencies_used, textlow_not_set);
+ pst = (struct partial_symtab *) 0;
+ includes_used = 0;
+ dependencies_used = 0;
+ }
+#endif
+ continue;
+
+ case N_RBRAC:
+#ifdef HANDLE_RBRAC
+ HANDLE_RBRAC (nlist.n_value);
+ continue;
+#endif
+ case N_EINCL:
+ case N_DSLINE:
+ case N_BSLINE:
+ case N_SSYM: /* Claim: Structure or union element.
+ Hopefully, I can ignore this. */
+ case N_ENTRY: /* Alternate entry point; can ignore. */
+ case N_MAIN: /* Can definitely ignore this. */
+ case N_CATCH: /* These are GNU C++ extensions */
+ case N_EHDECL: /* that can safely be ignored here. */
+ 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_NSYMS: /* Ultrix 4.0: symbol count */
+ case N_DEFD: /* GNU Modula-2 */
+ case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
+
+ case N_OBJ: /* useless types from Solaris */
+ case N_OPT:
+ /* These symbols aren't interesting; don't worry about them */
+
+ continue;
+
+ default:
+ /* If we haven't found it yet, ignore it. It's probably some
+ new type we don't know about yet. */
+ unknown_symtype_complaint (local_hex_string (nlist.n_type));
+ continue;
+ }
}
/* If there's stuff to be cleaned up, clean it up. */
if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */
-/*FIXME, does this have a bug at start address 0? */
+ /*FIXME, does this have a bug at start address 0? */
&& last_o_file_start
&& objfile->ei.entry_point < nlist.n_value
&& objfile->ei.entry_point >= last_o_file_start)
{
/* Don't set pst->texthigh lower than it already is. */
CORE_ADDR text_end =
- (lowest_text_address == (CORE_ADDR) -1
- ? (text_addr + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)))
- : lowest_text_address)
- + text_size;
+ (lowest_text_address == (CORE_ADDR) -1
+ ? (text_addr + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)))
+ : lowest_text_address)
+ + text_size;
end_psymtab (pst, psymtab_include_list, includes_used,
symnum * symbol_size,
static struct partial_symtab *
-start_psymtab (objfile, filename, textlow, ldsymoff, global_syms, static_syms)
- struct objfile *objfile;
- char *filename;
- CORE_ADDR textlow;
- int ldsymoff;
- struct partial_symbol **global_syms;
- struct partial_symbol **static_syms;
+start_psymtab (struct objfile *objfile, char *filename, CORE_ADDR textlow,
+ int ldsymoff, struct partial_symbol **global_syms,
+ struct partial_symbol **static_syms)
{
struct partial_symtab *result =
start_psymtab_common (objfile, objfile->section_offsets,
FIXME: List variables and peculiarities of same. */
struct partial_symtab *
-end_psymtab (pst, include_list, num_includes, capping_symbol_offset,
- capping_text, dependency_list, number_dependencies, textlow_not_set)
- struct partial_symtab *pst;
- char **include_list;
- int num_includes;
- int capping_symbol_offset;
- CORE_ADDR capping_text;
- struct partial_symtab **dependency_list;
- int number_dependencies;
- int textlow_not_set;
+end_psymtab (struct partial_symtab *pst, char **include_list, int num_includes,
+ int capping_symbol_offset, CORE_ADDR capping_text,
+ struct partial_symtab **dependency_list, int number_dependencies,
+ int textlow_not_set)
{
int i;
struct objfile *objfile = pst->objfile;
/* Under Solaris, the N_SO symbols always have a value of 0,
instead of the usual address of the .o file. Therefore,
we have to do some tricks to fill in texthigh and textlow.
- The first trick is in partial-stab.h: if we see a static
+ The first trick is: if we see a static
or global function, and the textlow for the current pst
is not set (ie: textlow_not_set), then we use that function's
address for the textlow of the pst. */
/* Now, to fill in texthigh, we remember the last function seen
- in the .o file (also in partial-stab.h). Also, there's a hack in
+ in the .o file. Also, there's a hack in
bfd/elf.c and gdb/elfread.c to pass the ELF st_size field
to here via the misc_info field. Therefore, we can fill in
a reliable texthigh by taking the address plus size of the
}
\f
static void
-dbx_psymtab_to_symtab_1 (pst)
- struct partial_symtab *pst;
+dbx_psymtab_to_symtab_1 (struct partial_symtab *pst)
{
struct cleanup *old_chain;
int i;
Be verbose about it if the user wants that. */
static void
-dbx_psymtab_to_symtab (pst)
- struct partial_symtab *pst;
+dbx_psymtab_to_symtab (struct partial_symtab *pst)
{
bfd *sym_bfd;
/* Read in a defined section of a specific object file's symbols. */
static void
-read_ofile_symtab (pst)
- struct partial_symtab *pst;
+read_ofile_symtab (struct partial_symtab *pst)
{
register char *namestring;
register struct external_nlist *bufp;
INTERNALIZE_SYMBOL (nlist, bufp, abfd);
OBJSTAT (objfile, n_stabs++);
- SET_NAMESTRING ();
+ namestring = set_namestring (objfile, nlist);
processing_gcc_compilation = 0;
if (nlist.n_type == N_TEXT)
/* Try to select a C++ demangling based on the compilation unit
producer. */
+#if 0
+ /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't
+ know whether it will use the old style or v3 mangling. */
if (processing_gcc_compilation)
{
if (AUTO_DEMANGLING)
set_demangling_style (GNU_DEMANGLING_STYLE_STRING);
}
}
+#endif
}
else
{
type = bfd_h_get_8 (abfd, bufp->e_type);
- SET_NAMESTRING ();
+ namestring = set_namestring (objfile, nlist);
if (type & N_STAB)
{
else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL))
processing_gcc_compilation = 2;
+#if 0
+ /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't
+ know whether it will use the old style or v3 mangling. */
if (AUTO_DEMANGLING)
{
set_demangling_style (GNU_DEMANGLING_STYLE_STRING);
}
+#endif
}
else if (type & N_EXT || type == (unsigned char) N_TEXT
|| type == (unsigned char) N_NBTEXT
pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT (objfile));
- /* Process items which we had to "process_later" due to dependancies
- on other stabs. */
- process_now (objfile);
-
+#if 0 /* OBSOLETE CFront */
+// OBSOLETE /* Process items which we had to "process_later" due to dependencies
+// OBSOLETE on other stabs. */
+// OBSOLETE process_now (objfile);
+#endif /* OBSOLETE CFront */
end_stabs ();
}
\f
It is used in end_symtab. */
void
-process_one_symbol (type, desc, valu, name, section_offsets, objfile)
- int type, desc;
- CORE_ADDR valu;
- char *name;
- struct section_offsets *section_offsets;
- struct objfile *objfile;
+process_one_symbol (int type, int desc, CORE_ADDR valu, char *name,
+ struct section_offsets *section_offsets,
+ struct objfile *objfile)
{
#ifdef SUN_FIXED_LBRAC_BUG
/* If SUN_FIXED_LBRAC_BUG is defined, then it tells us whether we need
used to relocate these symbol types rather than SECTION_OFFSETS. */
static CORE_ADDR function_start_offset;
+ /* This holds the address of the start of a function, without the system
+ peculiarities of function_start_offset. */
+ static CORE_ADDR last_function_start;
+
+ /* If this is nonzero, we've seen an N_SLINE since the start of the current
+ function. Initialized to nonzero to assure that last_function_start
+ is never used uninitialized. */
+ static int sline_found_in_function = 1;
+
/* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source
file. Used to detect the SunPRO solaris compiler. */
static int n_opt_found;
{
/* This N_FUN marks the end of a function. This closes off the
current block. */
+
+ if (context_stack_depth <= 0)
+ {
+ lbrac_mismatch_complaint (symnum);
+ break;
+ }
+
+ record_line (current_subfile, 0, function_start_offset + valu);
within_function = 0;
new = pop_context ();
break;
}
+ sline_found_in_function = 0;
+
/* Relocate for dynamic loading */
valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
-#ifdef SMASH_TEXT_ADDRESS
- SMASH_TEXT_ADDRESS (valu);
-#endif
+ valu = SMASH_TEXT_ADDRESS (valu);
+ last_function_start = valu;
+
goto define_a_symbol;
case N_LBRAC:
if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address)
{
/* Patch current LBRAC pc value to match last handy pc value */
- complain (&lbrac_complaint);
+ complaint (&symfile_complaints, "bad block start address patched");
valu = last_pc_address;
}
#endif
N_SO, the linker did not relocate them (sigh). */
valu += last_source_start_addr;
+ if (context_stack_depth <= 0)
+ {
+ lbrac_mismatch_complaint (symnum);
+ break;
+ }
+
new = pop_context ();
if (desc != new->depth)
- complain (&lbrac_mismatch_complaint, symnum);
+ lbrac_mismatch_complaint (symnum);
/* Some compilers put the variable decls inside of an
LBRAC/RBRAC block. This macro should be nonzero if this
/* Can only use new->locals as local symbols here if we're in
gcc or on a machine that puts them before the lbrack. */
if (!VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation))
- local_symbols = new->locals;
+ {
+ if (local_symbols != NULL)
+ {
+ /* GCC development snapshots from March to December of
+ 2000 would output N_LSYM entries after N_LBRAC
+ entries. As a consequence, these symbols are simply
+ discarded. Complain if this is the case. Note that
+ there are some compilers which legitimately put local
+ symbols within an LBRAC/RBRAC block; this complaint
+ might also help sort out problems in which
+ VARIABLES_INSIDE_BLOCK is incorrectly defined. */
+ complaint (&symfile_complaints,
+ "misplaced N_LBRAC entry; discarding local symbols which have no enclosing block");
+ }
+ local_symbols = new->locals;
+ }
if (context_stack_depth
> !VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation))
compilers? Is this ever harmful?). */
if (new->start_addr > valu)
{
- complain (&lbrac_rbrac_complaint);
+ complaint (&symfile_complaints,
+ "block start larger than block end");
new->start_addr = valu;
}
/* Make a block for the local symbols within. */
#ifdef SUN_FIXED_LBRAC_BUG
last_pc_address = valu; /* Save for SunOS bug circumcision */
#endif
- record_line (current_subfile, desc, valu);
+ /* If this is the first SLINE note in the function, record it at
+ the start of the function instead of at the listed location. */
+ if (within_function && sline_found_in_function == 0)
+ {
+ record_line (current_subfile, desc, last_function_start);
+ sline_found_in_function = 1;
+ }
+ else
+ record_line (current_subfile, desc, valu);
break;
case N_BCOMM:
case N_ROSYM:
goto case_N_ROSYM;
default:
- abort ();
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
}
}
case N_NBBSS:
case N_NBSTS:
case N_NBLCS:
- complain (&unknown_symtype_complaint, local_hex_string (type));
+ unknown_symtype_complaint (local_hex_string (type));
/* FALLTHROUGH */
/* The following symbol types don't need the address field relocated,
from N_FUN symbols. */
if (type == N_FUN
&& valu == ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)))
- valu =
- find_stab_function_addr (name, last_source_file, objfile);
+ {
+ CORE_ADDR minsym_valu =
+ find_stab_function_addr (name, last_source_file, objfile);
+
+ /* find_stab_function_addr will return 0 if the minimal
+ symbol wasn't found. (Unfortunately, this might also
+ be a valid address.) Anyway, if it *does* return 0,
+ it is likely that the value was set correctly to begin
+ with... */
+ if (minsym_valu != 0)
+ valu = minsym_valu;
+ }
#endif
#ifdef SUN_FIXED_LBRAC_BUG
if (context_stack_depth > 1)
{
- complain (&lbrac_unmatched_complaint, symnum);
+ complaint (&symfile_complaints,
+ "unmatched N_LBRAC before symtab pos %d", symnum);
break;
}
if (STREQ (name, GCC2_COMPILED_FLAG_SYMBOL))
{
processing_gcc_compilation = 2;
-#if 1 /* Works, but is experimental. -fnf */
+#if 0 /* Works, but is experimental. -fnf */
+ /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't
+ know whether it will use the old style or v3 mangling. */
if (AUTO_DEMANGLING)
{
set_demangling_style (GNU_DEMANGLING_STYLE_STRING);
}
break;
+ case N_MAIN: /* Name of main routine. */
+ /* FIXME: If one has a symbol file with N_MAIN and then replaces
+ it with a symbol file with "main" and without N_MAIN. I'm
+ not sure exactly what rule to follow but probably something
+ like: N_MAIN takes precedence over "main" no matter what
+ objfile it is in; If there is more than one N_MAIN, choose
+ the one in the symfile_objfile; If there is more than one
+ N_MAIN within a given objfile, complain() and choose
+ arbitrarily. (kingdon) */
+ if (name != NULL)
+ set_main_name (name);
+ break;
+
/* The following symbol types can be ignored. */
case N_OBJ: /* Solaris 2: Object file dir and name */
/* N_UNDF: Solaris 2: file separator mark */
/* N_UNDF: -- we will never encounter it, since we only process one
file's symbols at once. */
case N_ENDM: /* Solaris 2: End of module */
- case N_MAIN: /* Name of main routine. */
case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
break;
}
adjusted for coff details. */
void
-coffstab_build_psymtabs (objfile, mainline,
- textaddr, textsize, stabsects,
- stabstroffset, stabstrsize)
- struct objfile *objfile;
- int mainline;
- CORE_ADDR textaddr;
- unsigned int textsize;
- struct stab_section_list *stabsects;
- file_ptr stabstroffset;
- unsigned int stabstrsize;
+coffstab_build_psymtabs (struct objfile *objfile, int mainline,
+ CORE_ADDR textaddr, unsigned int textsize,
+ struct stab_section_list *stabsects,
+ file_ptr stabstroffset, unsigned int stabstrsize)
{
int val;
bfd *sym_bfd = objfile->obfd;
val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET);
if (val < 0)
perror_with_name (name);
- val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd);
+ val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd);
if (val != stabstrsize)
perror_with_name (name);
adjusted for elf details. */
void
-elfstab_build_psymtabs (objfile, mainline,
- staboffset, stabsize,
- stabstroffset, stabstrsize)
- struct objfile *objfile;
- int mainline;
- file_ptr staboffset;
- unsigned int stabsize;
- file_ptr stabstroffset;
- unsigned int stabstrsize;
+elfstab_build_psymtabs (struct objfile *objfile, int mainline,
+ file_ptr staboffset, unsigned int stabsize,
+ file_ptr stabstroffset, unsigned int stabstrsize)
{
int val;
bfd *sym_bfd = objfile->obfd;
val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET);
if (val < 0)
perror_with_name (name);
- val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd);
+ val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd);
if (val != stabstrsize)
perror_with_name (name);
This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */
void
-stabsect_build_psymtabs (objfile, mainline, stab_name,
- stabstr_name, text_name)
- struct objfile *objfile;
- int mainline;
- char *stab_name;
- char *stabstr_name;
- char *text_name;
+stabsect_build_psymtabs (struct objfile *objfile, int mainline, char *stab_name,
+ char *stabstr_name, char *text_name)
{
int val;
bfd *sym_bfd = objfile->obfd;
};
void
-_initialize_dbxread ()
+_initialize_dbxread (void)
{
add_symtab_fns (&aout_sym_fns);
}
projects / deliverable / binutils-gdb.git / blobdiff