/* Read dbx symbol tables and convert to internal format, for GDB.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
+ Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This module provides three functions: dbx_symfile_init,
which initializes to read a symbol file; dbx_new_init, which
for real. dbx_psymtab_to_symtab() is the function that does this */
#include "defs.h"
-#include <string.h>
+#include "gdb_string.h"
#if defined(USG) || defined(__CYGNUSCLIB__)
#include <sys/types.h>
#include <fcntl.h>
#endif
-#include <obstack.h>
-#include <sys/param.h>
-#ifndef NO_SYS_FILE
-#include <sys/file.h>
-#endif
-#include <sys/stat.h>
+#include "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 "libbfd.h" /* FIXME Secret internal BFD stuff (bfd_read) */
#include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */
#include "symfile.h"
#include "objfiles.h"
#include "aout/aout64.h"
#include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */
-#if !defined (SEEK_SET)
-#define SEEK_SET 0
-#define SEEK_CUR 1
+\f
+/* This macro returns the size field of a minimal symbol, which is normally
+ stored in the "info" field. The macro can be overridden for specific
+ targets (e.g. MIPS16) that use the info field for other purposes. */
+#ifndef MSYMBOL_SIZE
+#define MSYMBOL_SIZE(msym) ((long) MSYMBOL_INFO (msym))
#endif
-/* Each partial symbol table entry contains a pointer to private data for the
- read_symtab() function to use when expanding a partial symbol table entry
- to a full symbol table entry.
- For dbxread this structure contains the offset within the file symbol table
- of first local symbol for this file, and length (in bytes) of the section
- of the symbol table devoted to this file's symbols (actually, the section
- bracketed may contain more than just this file's symbols). It also contains
- further information needed to locate the symbols if they are in an ELF file.
+/* We put a pointer to this structure in the read_symtab_private field
+ of the psymtab. */
- If ldsymlen is 0, the only reason for this thing's existence is the
- dependency list. Nothing else will happen when it is read in. */
+struct symloc {
-#define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff)
-#define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen)
-#define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private))
-#define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size)
-#define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset)
-#define STRING_OFFSET(p) (SYMLOC(p)->string_offset)
-#define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset)
+ /* Offset within the file symbol table of first local symbol for this
+ file. */
-struct symloc {
int ldsymoff;
+
+ /* Length (in bytes) of the section of the symbol table devoted to
+ this file's symbols (actually, the section bracketed may contain
+ more than just this file's symbols). If ldsymlen is 0, the only
+ reason for this thing's existence is the dependency list. Nothing
+ else will happen when it is read in. */
+
int ldsymlen;
+
+ /* The size of each symbol in the symbol file (in external form). */
+
int symbol_size;
+
+ /* Further information needed to locate the symbols if they are in
+ an ELF file. */
+
int symbol_offset;
int string_offset;
int file_string_offset;
};
-/* Macro to determine which symbols to ignore when reading the first symbol
- of a file. Some machines override this definition. */
-#ifndef IGNORE_SYMBOL
-/* This code is used on Ultrix systems. Ignore it */
-#define IGNORE_SYMBOL(type) (type == (int)N_NSYMS)
-#endif
+#define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff)
+#define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen)
+#define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private))
+#define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size)
+#define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset)
+#define STRING_OFFSET(p) (SYMLOC(p)->string_offset)
+#define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset)
+\f
/* Remember what we deduced to be the source language of this psymtab. */
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 unsigned symbol_size;
-/* This is the offset of the symbol table in the executable file */
+/* This is the offset of the symbol table in the executable file. */
+
static unsigned symbol_table_offset;
-/* This is the offset of the string table in the executable file */
+/* This is the offset of the string table in the executable file. */
+
static unsigned string_table_offset;
/* For elf+stab executables, the n_strx field is not a simple index
- into the string table. Instead, each .o file has a base offset
- in the string table, and the associated symbols contain offsets
- from this base. The following two variables contain the base
- offset for the current and next .o files. */
+ into the string table. Instead, each .o file has a base offset in
+ the string table, and the associated symbols contain offsets from
+ this base. The following two variables contain the base offset for
+ the current and next .o files. */
+
static unsigned int file_string_table_offset;
static unsigned int next_file_string_table_offset;
+
+/* .o and NLM files contain unrelocated addresses which are based at
+ 0. When non-zero, this flag disables some of the special cases for
+ Solaris elf+stab text addresses at location 0. */
+
+static int symfile_relocatable = 0;
+
+/* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are
+ relative to the function start address. */
+
+static int block_address_function_relative = 0;
\f
-/* This is the lowest text address we have yet encountered. */
+/* The lowest text address we have yet encountered. This is needed
+ because in an a.out file, there is no header field which tells us
+ what address the program is actually going to be loaded at, so we
+ need to make guesses based on the symbols (which *are* relocated to
+ reflect the address it will be loaded at). */
+
static CORE_ADDR lowest_text_address;
+/* Non-zero if there is any line number info in the objfile. Prevents
+ end_psymtab from discarding an otherwise empty psymtab. */
+
+static int has_line_numbers;
+
/* Complaints about the symbols we have encountered. */
struct complaint lbrac_complaint =
{"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0};
struct complaint repeated_header_complaint =
- {"\"repeated\" header file not previously seen, at symtab pos %d", 0, 0};
+ {"\"repeated\" header file %s not previously seen, at symtab pos %d", 0, 0};
-struct complaint repeated_header_name_complaint =
- {"\"repeated\" header file not previously seen, named %s", 0, 0};
+struct complaint unclaimed_bincl_complaint =
+ {"N_BINCL %s not in entries for any file, at symtab pos %d", 0, 0};
\f
/* During initial symbol readin, we need to have a structure to keep
track of which psymtabs have which bincls in them. This structure
/* Local function prototypes */
+static void
+process_now PARAMS ((struct objfile *));
+
static void
free_header_files PARAMS ((void));
static void
init_bincl_list PARAMS ((int, struct objfile *));
-static void
-init_psymbol_list PARAMS ((struct objfile *));
-
static char *
-dbx_next_symbol_text PARAMS ((void));
+dbx_next_symbol_text PARAMS ((struct objfile *));
static void
fill_symbuf PARAMS ((bfd *));
static void
free_header_files ()
{
- register int i;
-
- if (header_files != NULL)
- {
- for (i = 0; i < n_header_files; i++)
- {
- free (header_files[i].name);
- }
- free ((PTR)header_files);
- header_files = NULL;
- n_header_files = 0;
- }
if (this_object_header_files)
{
free ((PTR)this_object_header_files);
this_object_header_files = NULL;
}
- n_allocated_header_files = 0;
n_allocated_this_object_header_files = 0;
}
static void
init_header_files ()
{
- n_header_files = 0;
- n_allocated_header_files = 10;
- header_files = (struct header_file *)
- xmalloc (10 * sizeof (struct header_file));
-
n_allocated_this_object_header_files = 10;
this_object_header_files = (int *) xmalloc (10 * sizeof (int));
}
char *name;
int instance;
{
- register struct header_file *p = header_files;
+ register struct header_file *p = HEADER_FILES (current_objfile);
register int i;
- for (i = 0; i < n_header_files; i++)
+ for (i = 0; i < N_HEADER_FILES (current_objfile); i++)
if (STREQ (p[i].name, name) && instance == p[i].instance)
{
add_this_object_header_file (i);
return;
}
- complain (&repeated_header_complaint, symnum);
- complain (&repeated_header_name_complaint, name);
+ complain (&repeated_header_complaint, name, symnum);
}
/* Add to this file a "new" header file: definitions for its types follow.
int instance;
{
register int i;
+ register struct header_file *hfile;
/* Make sure there is room for one more header file. */
- if (n_header_files == n_allocated_header_files)
+ i = N_ALLOCATED_HEADER_FILES (current_objfile);
+
+ if (N_HEADER_FILES (current_objfile) == i)
{
- n_allocated_header_files *= 2;
- header_files = (struct header_file *)
- xrealloc ((char *) header_files,
- (n_allocated_header_files * sizeof (struct header_file)));
+ if (i == 0)
+ {
+ N_ALLOCATED_HEADER_FILES (current_objfile) = 10;
+ HEADER_FILES (current_objfile) = (struct header_file *)
+ xmalloc (10 * sizeof (struct header_file));
+ }
+ else
+ {
+ i *= 2;
+ N_ALLOCATED_HEADER_FILES (current_objfile) = i;
+ HEADER_FILES (current_objfile) = (struct header_file *)
+ xrealloc ((char *) HEADER_FILES (current_objfile),
+ (i * 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
+ i = N_HEADER_FILES (current_objfile)++;
+ hfile = HEADER_FILES (current_objfile) + i;
+ hfile->name = savestring (name, strlen(name));
+ hfile->instance = instance;
+ hfile->length = 10;
+ hfile->vector
= (struct type **) xmalloc (10 * sizeof (struct type *));
- memset (header_files[i].vector, 0, 10 * sizeof (struct type *));
+ memset (hfile->vector, 0, 10 * sizeof (struct type *));
add_this_object_header_file (i);
}
explicit_lookup_type (real_filenum, index)
int real_filenum, index;
{
- register struct header_file *f = &header_files[real_filenum];
+ register struct header_file *f = &HEADER_FILES (current_objfile)[real_filenum];
if (index >= f->length)
{
struct objfile *objfile;
{
enum minimal_symbol_type ms_type;
+ int section;
+ asection *bfd_section;
switch (type)
{
- case N_TEXT | N_EXT: ms_type = mst_text; break;
- case N_DATA | N_EXT: ms_type = mst_data; break;
- case N_BSS | N_EXT: ms_type = mst_bss; break;
- case N_ABS | N_EXT: ms_type = mst_abs; break;
+ case N_TEXT | N_EXT:
+ ms_type = mst_text;
+ section = SECT_OFF_TEXT;
+ bfd_section = DBX_TEXT_SECTION (objfile);
+ break;
+ case N_DATA | N_EXT:
+ ms_type = mst_data;
+ section = SECT_OFF_DATA;
+ bfd_section = DBX_DATA_SECTION (objfile);
+ break;
+ case N_BSS | N_EXT:
+ ms_type = mst_bss;
+ section = SECT_OFF_BSS;
+ bfd_section = DBX_BSS_SECTION (objfile);
+ break;
+ case N_ABS | N_EXT:
+ ms_type = mst_abs;
+ section = -1;
+ bfd_section = NULL;
+ break;
#ifdef N_SETV
- case N_SETV | N_EXT: ms_type = mst_data; break;
+ case N_SETV | N_EXT:
+ ms_type = mst_data;
+ section = SECT_OFF_DATA;
+ bfd_section = DBX_DATA_SECTION (objfile);
+ break;
case N_SETV:
/* I don't think this type actually exists; since a N_SETV is the result
of going over many .o files, it doesn't make sense to have one
file local. */
ms_type = mst_file_data;
+ section = SECT_OFF_DATA;
+ bfd_section = DBX_DATA_SECTION (objfile);
break;
#endif
case N_TEXT:
case N_FN:
case N_FN_SEQ:
ms_type = mst_file_text;
+ section = SECT_OFF_TEXT;
+ bfd_section = DBX_TEXT_SECTION (objfile);
break;
-
case N_DATA:
ms_type = mst_file_data;
if (VTBL_PREFIX_P ((tempstring)))
ms_type = mst_data;
}
+ section = SECT_OFF_DATA;
+ bfd_section = DBX_DATA_SECTION (objfile);
break;
-
case N_BSS:
ms_type = mst_file_bss;
+ section = SECT_OFF_BSS;
+ bfd_section = DBX_BSS_SECTION (objfile);
+ break;
+ default:
+ ms_type = mst_unknown;
+ section = -1;
+ bfd_section = NULL;
break;
-
- default: ms_type = mst_unknown; break;
}
- if (ms_type == mst_file_text || ms_type == mst_text
+ if ((ms_type == mst_file_text || ms_type == mst_text)
&& address < lowest_text_address)
lowest_text_address = address;
- prim_record_minimal_symbol
- (obsavestring (name, strlen (name), &objfile -> symbol_obstack),
- address,
- ms_type,
- objfile);
+ prim_record_minimal_symbol_and_info
+ (name, address, ms_type, NULL, section, bfd_section, objfile);
}
\f
/* Scan and build partial symbols for a symbol file.
int val;
struct cleanup *back_to;
+ val = strlen (objfile->name);
+
sym_bfd = objfile->obfd;
- val = bfd_seek (objfile->obfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET);
+
+ /* .o and .nlm files are relocatables with text, data and bss segs based at
+ 0. This flag disables special (Solaris stabs-in-elf only) fixups for
+ symbols with a value of 0. */
+
+ symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC;
+
+ /* This is true for Solaris (and all other systems which put stabs
+ in sections, hopefully, since it would be silly to do things
+ differently from Solaris), and false for SunOS4 and other a.out
+ file formats. */
+ block_address_function_relative =
+ ((0 == strncmp (bfd_get_target (sym_bfd), "elf", 3))
+ || (0 == strncmp (bfd_get_target (sym_bfd), "som", 3))
+ || (0 == strncmp (bfd_get_target (sym_bfd), "coff", 4))
+ || (0 == strncmp (bfd_get_target (sym_bfd), "pe", 2))
+ || (0 == strncmp (bfd_get_target (sym_bfd), "nlm", 3)));
+
+ val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET);
if (val < 0)
perror_with_name (objfile->name);
/* 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)
- init_psymbol_list (objfile);
+ if (mainline
+ || objfile->global_psymbols.size == 0
+ || objfile->static_psymbols.size == 0)
+ init_psymbol_list (objfile, DBX_SYMCOUNT (objfile));
symbol_size = DBX_SYMBOL_SIZE (objfile);
symbol_table_offset = DBX_SYMTAB_OFFSET (objfile);
- pending_blocks = 0;
- back_to = make_cleanup (really_free_pendings, 0);
+ free_pending_blocks ();
+ back_to = make_cleanup ((make_cleanup_func) really_free_pendings, 0);
init_minimal_symbol_collection ();
- make_cleanup (discard_minimal_symbols, 0);
+ make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0);
/* Now that the symbol table data of the executable file are all in core,
process them and define symbols accordingly. */
read_dbx_symtab (section_offsets, objfile,
- bfd_section_vma (sym_bfd, DBX_TEXT_SECT (objfile)),
- bfd_section_size (sym_bfd, DBX_TEXT_SECT (objfile)));
+ DBX_TEXT_ADDR (objfile),
+ DBX_TEXT_SIZE (objfile));
- /* Add the dynamic symbols if we are reading the main symbol table. */
+ /* Add the dynamic symbols. */
- if (mainline)
- read_dbx_dynamic_symtab (section_offsets, objfile);
+ read_dbx_dynamic_symtab (section_offsets, objfile);
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile. */
install_minimal_symbols (objfile);
- if (!have_partial_symbols ()) {
- wrap_here ("");
- printf_filtered ("(no debugging symbols found)...");
- wrap_here ("");
- }
-
do_cleanups (back_to);
}
int val;
bfd *sym_bfd = objfile->obfd;
char *name = bfd_get_filename (sym_bfd);
+ asection *text_sect;
unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE];
/* Allocate struct to keep track of the symfile */
- objfile->sym_stab_info = (PTR)
+ 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));
+
+ DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text");
+ DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data");
+ DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss");
/* FIXME POKING INSIDE BFD DATA STRUCTURES */
#define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd))
/* FIXME POKING INSIDE BFD DATA STRUCTURES */
DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL;
- DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text");
- if (!DBX_TEXT_SECT (objfile))
+
+ text_sect = bfd_get_section_by_name (sym_bfd, ".text");
+ if (!text_sect)
error ("Can't find .text section in symbol file");
+ DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect);
+ DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect);
DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd);
DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd);
DBX_STRINGTAB (objfile) =
(char *) obstack_alloc (&objfile -> psymbol_obstack,
DBX_STRINGTAB_SIZE (objfile));
+ OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile));
/* Now read in the string table in one big gulp. */
{
if (objfile->sym_stab_info != NULL)
{
+ if (HEADER_FILES (objfile) != NULL)
+ {
+ register int i = N_HEADER_FILES (objfile);
+ register struct header_file *hfiles = HEADER_FILES (objfile);
+
+ while (--i >= 0)
+ {
+ free (hfiles [i].name);
+ free (hfiles [i].vector);
+ }
+ free ((PTR) hfiles);
+ }
mfree (objfile -> md, objfile->sym_stab_info);
}
free_header_files ();
\f
/* Buffer for reading the symbol table entries. */
-static struct internal_nlist symbuf[4096];
+static struct external_nlist symbuf[4096];
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;
+}
+
+
/* Name of last function encountered. Used in Solaris to approximate
object file boundaries. */
static char *last_function_name;
/* The address in memory of the string table of the object file we are
reading (which might not be the "main" object file, but might be a
- shared library or some other dynamically loaded thing). This is set
- by read_dbx_symtab when building psymtabs, and by read_ofile_symtab
- when building symtabs, and is used only by next_symbol_text. */
+ shared library or some other dynamically loaded thing). This is
+ set by read_dbx_symtab when building psymtabs, and by
+ read_ofile_symtab when building symtabs, and is used only by
+ next_symbol_text. FIXME: If that is true, we don't need it when
+ building psymtabs, right? */
static char *stringtab_global;
+/* These variables are used to control fill_symbuf when the stabs
+ symbols are not contiguous (as may be the case when a COFF file is
+ linked using --split-by-reloc). */
+static struct stab_section_list *symbuf_sections;
+static unsigned int symbuf_left;
+static unsigned int symbuf_read;
+
/* Refill the symbol table input buffer
and set the variables that control fetching entries from it.
Reports an error if no data available.
fill_symbuf (sym_bfd)
bfd *sym_bfd;
{
- int nbytes = bfd_read ((PTR)symbuf, sizeof (symbuf), 1, sym_bfd);
+ unsigned int count;
+ int nbytes;
+
+ if (symbuf_sections == NULL)
+ count = sizeof (symbuf);
+ else
+ {
+ if (symbuf_left <= 0)
+ {
+ file_ptr filepos = symbuf_sections->section->filepos;
+ if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0)
+ perror_with_name (bfd_get_filename (sym_bfd));
+ symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section);
+ symbol_table_offset = filepos - symbuf_read;
+ symbuf_sections = symbuf_sections->next;
+ }
+
+ count = symbuf_left;
+ if (count > sizeof (symbuf))
+ count = sizeof (symbuf);
+ }
+
+ nbytes = bfd_read ((PTR)symbuf, count, 1, sym_bfd);
if (nbytes < 0)
perror_with_name (bfd_get_filename (sym_bfd));
else if (nbytes == 0)
error ("Premature end of file reading symbol table");
symbuf_end = nbytes / symbol_size;
symbuf_idx = 0;
+ symbuf_left -= nbytes;
+ symbuf_read += nbytes;
}
#define SWAP_SYMBOL(symp, 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); \
+ }
+
/* Invariant: The symbol pointed to by symbuf_idx is the first one
that hasn't been swapped. Swap the symbol at the same time
that symbuf_idx is incremented. */
call this function to get the continuation. */
static char *
-dbx_next_symbol_text ()
+dbx_next_symbol_text (objfile)
+ struct objfile *objfile;
{
+ struct internal_nlist nlist;
+
if (symbuf_idx == symbuf_end)
fill_symbuf (symfile_bfd);
+
symnum++;
- SWAP_SYMBOL(&symbuf[symbuf_idx], symfile_bfd);
- return symbuf[symbuf_idx++].n_strx + stringtab_global
- + file_string_table_offset;
-}
-\f
-/* Initializes storage for all of the partial symbols that will be
- created by read_dbx_symtab and subsidiaries. */
+ INTERNALIZE_SYMBOL(nlist, &symbuf[symbuf_idx], symfile_bfd);
+ OBJSTAT (objfile, n_stabs++);
-static void
-init_psymbol_list (objfile)
- struct objfile *objfile;
-{
- /* Free any previously allocated psymbol lists. */
- if (objfile -> global_psymbols.list)
- mfree (objfile -> md, (PTR)objfile -> global_psymbols.list);
- if (objfile -> static_psymbols.list)
- mfree (objfile -> md, (PTR)objfile -> static_psymbols.list);
-
- /* Current best guess is that there are approximately a twentieth
- of the total symbols (in a debugging file) are global or static
- oriented symbols */
- objfile -> global_psymbols.size = DBX_SYMCOUNT (objfile) / 10;
- objfile -> static_psymbols.size = DBX_SYMCOUNT (objfile) / 10;
- objfile -> global_psymbols.next = objfile -> global_psymbols.list = (struct partial_symbol *)
- xmmalloc (objfile -> md, objfile -> global_psymbols.size * sizeof (struct partial_symbol));
- objfile -> static_psymbols.next = objfile -> static_psymbols.list = (struct partial_symbol *)
- xmmalloc (objfile -> md, objfile -> static_psymbols.size * sizeof (struct partial_symbol));
-}
+ symbuf_idx++;
+ return nlist.n_strx + stringtab_global + file_string_table_offset;
+}
+\f
/* Initialize the list of bincls to contain none and have some
allocated. */
&& STREQ (name, bincl->name))
return bincl->pst;
+ complain (&repeated_header_complaint, name, symnum);
return (struct partial_symtab *) 0;
}
long dynrel_count;
arelent **dynrels;
CORE_ADDR sym_value;
+ char *name;
/* Check that the symbol file has dynamic symbols that we know about.
bfd_arch_unknown can happen if we are reading a sun3 symbol file
asection *sec;
int type;
- sym = *symptr;
- sym_value = sym->value;
-
sec = bfd_get_section (sym);
/* BFD symbols are section relative. */
- sym_value += sec->vma;
+ sym_value = sym->value + sec->vma;
+
if (bfd_get_section_flags (abfd, sec) & SEC_CODE)
{
sym_value += ANOFFSET (section_offsets, SECT_OFF_TEXT);
}
}
- /* FIXME: Reading the dynamic relocs currently causes a bfd_assertion
- for sun3 executables. Do not read dynamic relocs till BFD is prepared
- to handle them. */
- if (bfd_get_arch (abfd) != bfd_arch_sparc)
- {
- do_cleanups (back_to);
- return;
- }
-
/* Symbols from shared libraries have a dynamic relocation entry
that points to the associated slot in the procedure linkage table.
We make a mininal symbol table entry with type mst_solib_trampoline
counter < dynrel_count;
counter++, relptr++)
{
- arelent *rel;
+ arelent *rel = *relptr;
+ CORE_ADDR address =
+ rel->address + ANOFFSET (section_offsets, SECT_OFF_DATA);
- /* FIXME: This probably doesn't work on a Sun3. */
+ switch (bfd_get_arch (abfd))
+ {
+ case bfd_arch_sparc:
+ if (rel->howto->type != RELOC_JMP_SLOT)
+ continue;
+ break;
+ case bfd_arch_m68k:
+ /* `16' is the type BFD produces for a jump table relocation. */
+ if (rel->howto->type != 16)
+ continue;
- rel = *relptr;
- if (rel->howto->type != RELOC_JMP_SLOT)
- continue;
+ /* Adjust address in the jump table to point to
+ the start of the bsr instruction. */
+ address -= 2;
+ break;
+ default:
+ continue;
+ }
- prim_record_minimal_symbol (bfd_asymbol_name (*rel->sym_ptr_ptr),
- rel->address,
- mst_solib_trampoline,
+ name = (char *) bfd_asymbol_name (*rel->sym_ptr_ptr);
+ prim_record_minimal_symbol (name, address, mst_solib_trampoline,
objfile);
}
CORE_ADDR text_addr;
int text_size;
{
- register struct internal_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */
+ register struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */
+ struct internal_nlist nlist;
+
register char *namestring;
int nsl;
int past_first_source_file = 0;
CORE_ADDR last_o_file_start = 0;
+ CORE_ADDR last_function_start = 0;
struct cleanup *back_to;
bfd *abfd;
+ int textlow_not_set;
/* Current partial symtab */
struct partial_symtab *pst;
/* Init bincl list */
init_bincl_list (20, objfile);
- back_to = make_cleanup (free_bincl_list, objfile);
+ back_to = make_cleanup ((make_cleanup_func) free_bincl_list, objfile);
last_source_file = NULL;
abfd = objfile->obfd;
symbuf_end = symbuf_idx = 0;
next_symbol_text_func = dbx_next_symbol_text;
+ textlow_not_set = 1;
+ has_line_numbers = 0;
for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++)
{
/*
* Special case to speed up readin.
*/
- if (bufp->n_type == (unsigned char)N_SLINE) continue;
+ if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE)
+ {
+ has_line_numbers = 1;
+ continue;
+ }
- SWAP_SYMBOL (bufp, abfd);
+ INTERNALIZE_SYMBOL (nlist, bufp, abfd);
+ OBJSTAT (objfile, n_stabs++);
/* Ok. There is a lot of code duplicated in the rest of this
switch statement (for efficiency reasons). Since I don't
I've imbedded it in the following macro.
*/
-/* Set namestring based on bufp. If the string table index is invalid,
+/* 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. */
/*FIXME: Too many adds and indirections in here for the inner loop. */
#define SET_NAMESTRING()\
- if (((unsigned)bufp->n_strx + file_string_table_offset) >= \
+ 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 = bufp->n_strx + file_string_table_offset + \
+ namestring = CUR_SYMBOL_STRX + file_string_table_offset + \
DBX_STRINGTAB (objfile)
-#define CUR_SYMBOL_TYPE bufp->n_type
-#define CUR_SYMBOL_VALUE bufp->n_value
+#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,secoff,fname,low,symoff,global_syms,static_syms)\
start_psymtab(ofile, secoff, fname, low, symoff, global_syms, static_syms)
-#define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\
- end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)
+#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 (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */
/*FIXME, does this have a bug at start address 0? */
&& last_o_file_start
- && objfile -> ei.entry_point < bufp->n_value
+ && 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 = bufp->n_value;
+ objfile -> ei.entry_file_highpc = nlist.n_value;
}
if (pst)
{
+ /* Don't set pst->texthigh lower than it already is. */
+ CORE_ADDR text_end =
+ (lowest_text_address == (CORE_ADDR)-1
+ ? (text_addr + section_offsets->offsets[SECT_OFF_TEXT])
+ : lowest_text_address)
+ + text_size;
+
end_psymtab (pst, psymtab_include_list, includes_used,
symnum * symbol_size,
- (lowest_text_address == (CORE_ADDR)-1
- ? (text_addr + section_offsets->offsets[SECT_OFF_TEXT])
- : lowest_text_address)
- + text_size,
- dependency_list, dependencies_used);
+ text_end > pst->texthigh ? text_end : pst->texthigh,
+ dependency_list, dependencies_used, textlow_not_set);
}
do_cleanups (back_to);
char *filename;
CORE_ADDR textlow;
int ldsymoff;
- struct partial_symbol *global_syms;
- struct partial_symbol *static_syms;
+ struct partial_symbol **global_syms;
+ struct partial_symbol **static_syms;
{
struct partial_symtab *result =
start_psymtab_common(objfile, section_offsets,
struct partial_symtab *
end_psymtab (pst, include_list, num_includes, capping_symbol_offset,
- capping_text, dependency_list, number_dependencies)
+ capping_text, dependency_list, number_dependencies, textlow_not_set)
struct partial_symtab *pst;
char **include_list;
int num_includes;
CORE_ADDR capping_text;
struct partial_symtab **dependency_list;
int number_dependencies;
+ int textlow_not_set;
{
int i;
- struct partial_symtab *p1;
struct objfile *objfile = pst -> objfile;
if (capping_symbol_offset != -1)
- LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst);
+ LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst);
pst->texthigh = capping_text;
-#ifdef N_SO_ADDRESS_MAYBE_MISSING
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
/* 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
or global function, and the textlow for the current pst
- is still 0, then we use that function's address for
- the textlow of the 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
+ /* 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
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
- last function in the file.
-
- Unfortunately, that does not cover the case where the last function
- in the file is static. See the paragraph below for more comments
- on this situation.
-
- Finally, if we have a valid textlow for the current file, we run
- down the partial_symtab_list filling in previous texthighs that
- are still unknown. */
-
- if (pst->texthigh == 0 && last_function_name) {
- char *p;
- int n;
- struct minimal_symbol *minsym;
-
- p = strchr (last_function_name, ':');
- if (p == NULL)
- p = last_function_name;
- n = p - last_function_name;
- p = alloca (n + 1);
- strncpy (p, last_function_name, n);
- p[n] = 0;
+ last function in the file. */
+
+ if (pst->texthigh == 0 && last_function_name)
+ {
+ char *p;
+ int n;
+ struct minimal_symbol *minsym;
+
+ p = strchr (last_function_name, ':');
+ if (p == NULL)
+ p = last_function_name;
+ n = p - last_function_name;
+ p = alloca (n + 2);
+ strncpy (p, last_function_name, n);
+ p[n] = 0;
- minsym = lookup_minimal_symbol (p, objfile);
-
- if (minsym) {
- pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) +
- (long) MSYMBOL_INFO (minsym);
- } else {
- /* This file ends with a static function, and it's
- difficult to imagine how hard it would be to track down
- the elf symbol. Luckily, most of the time no one will notice,
- since the next file will likely be compiled with -g, so
- the code below will copy the first fuction's start address
- back to our texthigh variable. (Also, if this file is the
- last one in a dynamically linked program, texthigh already
- has the right value.) If the next file isn't compiled
- with -g, then the last function in this file winds up owning
- all of the text space up to the next -g file, or the end (minus
- shared libraries). This only matters for single stepping,
- and even then it will still work, except that it will single
- step through all of the covered functions, instead of setting
- breakpoints around them as it usualy does. This makes it
- pretty slow, but at least it doesn't fail.
-
- We can fix this with a fairly big change to bfd, but we need
- to coordinate better with Cygnus if we want to do that. FIXME. */
+ minsym = lookup_minimal_symbol (p, pst->filename, objfile);
+ if (minsym == 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;
+ minsym = lookup_minimal_symbol (p, pst->filename, objfile);
+ }
+
+ if (minsym)
+ pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + MSYMBOL_SIZE (minsym);
+
+ last_function_name = NULL;
}
- last_function_name = NULL;
- }
/* this test will be true if the last .o file is only data */
- if (pst->textlow == 0)
- /* This loses if the text section really starts at address zero
- (generally true when we are debugging a .o file, for example).
- That is why this whole thing is inside N_SO_ADDRESS_MAYBE_MISSING. */
+ if (textlow_not_set)
pst->textlow = pst->texthigh;
+ else
+ {
+ struct partial_symtab *p1;
- /* If we know our own starting text address, then walk through all other
- psymtabs for this objfile, and if any didn't know their ending text
- address, set it to our starting address. Take care to not set our
- own ending address to our starting address, nor to set addresses on
- `dependency' files that have both textlow and texthigh zero. */
- if (pst->textlow) {
- ALL_OBJFILE_PSYMTABS (objfile, p1) {
- if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) {
- p1->texthigh = pst->textlow;
- /* if this file has only data, then make textlow match texthigh */
- if (p1->textlow == 0)
- p1->textlow = p1->texthigh;
- }
+ /* If we know our own starting text address, then walk through all other
+ psymtabs for this objfile, and if any didn't know their ending text
+ address, set it to our starting address. Take care to not set our
+ own ending address to our starting address, nor to set addresses on
+ `dependency' files that have both textlow and texthigh zero. */
+
+ ALL_OBJFILE_PSYMTABS (objfile, p1)
+ {
+ if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst)
+ {
+ p1->texthigh = pst->textlow;
+ /* if this file has only data, then make textlow match texthigh */
+ if (p1->textlow == 0)
+ p1->textlow = p1->texthigh;
+ }
+ }
}
- }
/* End of kludge for patching Solaris textlow and texthigh. */
-#endif /* N_SO_ADDRESS_MAYBE_MISSING. */
+#endif /* SOFUN_ADDRESS_MAYBE_MISSING. */
pst->n_global_syms =
objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset);
if (num_includes == 0
&& number_dependencies == 0
&& pst->n_global_syms == 0
- && pst->n_static_syms == 0)
+ && pst->n_static_syms == 0
+ && has_line_numbers == 0)
{
/* Throw away this psymtab, it's empty. We can't deallocate it, since
it is on the obstack, but we can forget to chain it on the list. */
is wrong, in that a psymtab with N_SLINE entries but nothing else
is not empty, but we don't realize that. Fixing that without slowing
things down might be tricky. */
- struct partial_symtab *prev_pst;
- /* First, snip it out of the psymtab chain */
-
- if (pst->objfile->psymtabs == pst)
- pst->objfile->psymtabs = pst->next;
- else
- for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next)
- if (prev_pst->next == pst)
- prev_pst->next = pst->next;
-
- /* Next, put it on a free list for recycling */
-
- pst->next = pst->objfile->free_psymtabs;
- pst->objfile->free_psymtabs = pst;
+ discard_psymtab (pst);
/* Indicate that psymtab was thrown away. */
pst = (struct partial_symtab *)NULL;
/* Init stuff necessary for reading in symbols */
stabsread_init ();
buildsym_init ();
- old_chain = make_cleanup (really_free_pendings, 0);
+ old_chain = make_cleanup ((make_cleanup_func) really_free_pendings, 0);
file_string_table_offset = FILE_STRING_OFFSET (pst);
symbol_size = SYMBOL_SIZE (pst);
struct partial_symtab *pst;
{
register char *namestring;
- register struct internal_nlist *bufp;
+ register struct external_nlist *bufp;
+ struct internal_nlist nlist;
unsigned char type;
unsigned max_symnum;
register bfd *abfd;
bfd_seek (symfile_bfd, sym_offset - symbol_size, SEEK_CUR);
fill_symbuf (abfd);
bufp = &symbuf[symbuf_idx++];
- SWAP_SYMBOL (bufp, abfd);
+ INTERNALIZE_SYMBOL (nlist, bufp, abfd);
+ OBJSTAT (objfile, n_stabs++);
SET_NAMESTRING ();
processing_gcc_compilation = 0;
- if (bufp->n_type == N_TEXT)
+ if (nlist.n_type == N_TEXT)
{
const char *tempstring = namestring;
if (symbuf_idx == symbuf_end)
fill_symbuf (abfd);
bufp = &symbuf[symbuf_idx];
- if (bufp->n_type != (unsigned char)N_SO)
+ if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO)
error("First symbol in segment of executable not a source symbol");
max_symnum = sym_size / symbol_size;
if (symbuf_idx == symbuf_end)
fill_symbuf(abfd);
bufp = &symbuf[symbuf_idx++];
- SWAP_SYMBOL (bufp, abfd);
+ INTERNALIZE_SYMBOL (nlist, bufp, abfd);
+ OBJSTAT (objfile, n_stabs++);
- type = bufp->n_type;
+ type = bfd_h_get_8 (abfd, bufp->e_type);
SET_NAMESTRING ();
if (type & N_STAB) {
- process_one_symbol (type, bufp->n_desc, bufp->n_value,
+ process_one_symbol (type, nlist.n_desc, nlist.n_value,
namestring, section_offsets, objfile);
}
/* We skip checking for a new .o or -l file; that should never
if (last_source_start_addr == 0)
last_source_start_addr = text_offset;
- pst->symtab = end_symtab (text_offset + text_size, 0, 0, objfile,
- SECT_OFF_TEXT);
+ /* In reordered executables last_source_start_addr may not be the
+ lower bound for this symtab, instead use text_offset which comes
+ from pst->textlow which is correct. */
+ if (last_source_start_addr > text_offset)
+ last_source_start_addr = text_offset;
+
+ pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT);
+
+ /* Process items which we had to "process_later" due to dependancies
+ on other stabs. */
+ process_now (objfile);
+
end_stabs ();
}
used to relocate these symbol types rather than SECTION_OFFSETS. */
static CORE_ADDR function_start_offset;
- /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are relative
- to the function start address. */
- int block_address_function_relative;
-
/* 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;
N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */
static int function_stab_type = 0;
- /* This is true for Solaris (and all other systems which put stabs
- in sections, hopefully, since it would be silly to do things
- differently from Solaris), and false for SunOS4 and other a.out
- file formats. */
- block_address_function_relative =
- ((0 == strncmp (bfd_get_target (objfile->obfd), "elf", 3))
- || (0 == strncmp (bfd_get_target (objfile->obfd), "som", 3))
- || (0 == strncmp (bfd_get_target (objfile->obfd), "coff", 4)));
-
if (!block_address_function_relative)
/* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the
function start address, so just use the text offset. */
if (last_source_file == NULL && type != (unsigned char)N_SO)
{
- /* Ignore any symbols which appear before an N_SO symbol. Currently
- no one puts symbols there, but we should deal gracefully with the
- case. A complain()t might be in order (if !IGNORE_SYMBOL (type)),
+ /* Ignore any symbols which appear before an N_SO symbol.
+ Currently no one puts symbols there, but we should deal
+ gracefully with the case. A complain()t might be in order,
but this should not be an error (). */
return;
}
{
case N_FUN:
case N_FNAME:
+
+ if (*name == '\000')
+ {
+ /* This N_FUN marks the end of a function. This closes off the
+ current block. */
+ within_function = 0;
+ new = pop_context ();
+
+ /* Make a block for the local symbols within. */
+ finish_block (new->name, &local_symbols, new->old_blocks,
+ new->start_addr, new->start_addr + valu,
+ objfile);
+
+ /* May be switching to an assembler file which may not be using
+ block relative stabs, so reset the offset. */
+ if (block_address_function_relative)
+ function_start_offset = 0;
+
+ break;
+ }
+
/* Relocate for dynamic loading */
valu += ANOFFSET (section_offsets, SECT_OFF_TEXT);
+#ifdef SMASH_TEXT_ADDRESS
+ SMASH_TEXT_ADDRESS (valu);
+#endif
goto define_a_symbol;
case N_LBRAC:
/* This "symbol" just indicates the start of an inner lexical
context within a function. */
-#if defined(BLOCK_ADDRESS_ABSOLUTE)
- /* Relocate for dynamic loading (?). */
- valu += function_start_offset;
-#else
+ /* Ignore extra outermost context from SunPRO cc and acc. */
+ if (n_opt_found && desc == 1)
+ break;
+
if (block_address_function_relative)
/* Relocate for Sun ELF acc fn-relative syms. */
valu += function_start_offset;
/* On most machines, the block addresses are relative to the
N_SO, the linker did not relocate them (sigh). */
valu += last_source_start_addr;
-#endif
#ifdef SUN_FIXED_LBRAC_BUG
if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address) {
/* This "symbol" just indicates the end of an inner lexical
context that was started with N_LBRAC. */
-#if defined(BLOCK_ADDRESS_ABSOLUTE)
- /* Relocate for dynamic loading (?). */
- valu += function_start_offset;
-#else
+ /* Ignore extra outermost context from SunPRO cc and acc. */
+ if (n_opt_found && desc == 1)
+ break;
+
if (block_address_function_relative)
/* Relocate for Sun ELF acc fn-relative syms. */
valu += function_start_offset;
/* On most machines, the block addresses are relative to the
N_SO, the linker did not relocate them (sigh). */
valu += last_source_start_addr;
-#endif
new = pop_context();
if (desc != new->depth)
patch_subfile_names (current_subfile, name);
break; /* Ignore repeated SOs */
}
- end_symtab (valu, 0, 0, objfile, SECT_OFF_TEXT);
+ end_symtab (valu, objfile, SECT_OFF_TEXT);
end_stabs ();
}
+
+ /* Null name means this just marks the end of text for this .o file.
+ Don't start a new symtab in this case. */
+ if (*name == '\000')
+ break;
+
+ if (block_address_function_relative)
+ function_start_offset = 0;
+
start_stabs ();
start_symtab (name, NULL, valu);
+ record_debugformat ("stabs");
break;
-
case N_SOL:
/* This type of symbol indicates the start of data for
a sub-source-file, one whose contents were copied or
/* This type of "symbol" really just records
one line-number -- core-address correspondence.
Enter it in the line list for this symbol table. */
+
/* Relocate for dynamic loading and for ELF acc fn-relative syms. */
valu += function_start_offset;
+
#ifdef SUN_FIXED_LBRAC_BUG
last_pc_address = valu; /* Save for SunOS bug circumcision */
#endif
call level, which we really don't want to do). */
{
char *p;
- p = strchr (name, ':');
- if (p != 0 && p[1] == 'S')
+
+ /* .o files and NLMs have non-zero text seg offsets, but don't need
+ their static syms offset in this fashion. XXX - This is really a
+ crock that should be fixed in the solib handling code so that I
+ don't have to work around it here. */
+
+ if (!symfile_relocatable)
{
- /* The linker relocated it. We don't want to add an
- elfstab_offset_sections-type offset, but we *do* want
- to add whatever solib.c passed to symbol_file_add as
- addr (this is known to affect SunOS4, and I suspect ELF
- too). Since elfstab_offset_sections currently does not
- muck with the text offset (there is no Ttext.text
- symbol), we can get addr from the text offset. If
- elfstab_offset_sections ever starts dealing with the
- text offset, and we still need to do this, we need to
- invent a SECT_OFF_ADDR_KLUDGE or something. */
- valu += ANOFFSET (section_offsets, SECT_OFF_TEXT);
- goto define_a_symbol;
+ p = strchr (name, ':');
+ if (p != 0 && p[1] == 'S')
+ {
+ /* The linker relocated it. We don't want to add an
+ elfstab_offset_sections-type offset, but we *do* want
+ to add whatever solib.c passed to symbol_file_add as
+ addr (this is known to affect SunOS4, and I suspect ELF
+ too). Since elfstab_offset_sections currently does not
+ muck with the text offset (there is no Ttext.text
+ symbol), we can get addr from the text offset. If
+ elfstab_offset_sections ever starts dealing with the
+ text offset, and we still need to do this, we need to
+ invent a SECT_OFF_ADDR_KLUDGE or something. */
+ valu += ANOFFSET (section_offsets, SECT_OFF_TEXT);
+ goto define_a_symbol;
+ }
}
/* Since it's not the kludge case, re-dispatch to the right handler. */
switch (type) {
case 'F':
function_stab_type = type;
+#ifdef SOFUN_ADDRESS_MAYBE_MISSING
+ /* Deal with the SunPRO 3.0 compiler which omits the address
+ from N_FUN symbols. */
+ if (type == N_FUN
+ && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT))
+ {
+ struct minimal_symbol *msym;
+ char *p;
+ int n;
+
+ p = strchr (name, ':');
+ if (p == NULL)
+ p = name;
+ n = p - name;
+ p = alloca (n + 2);
+ strncpy (p, name, n);
+ p[n] = 0;
+
+ msym = lookup_minimal_symbol (p, last_source_file,
+ 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, last_source_file,
+ objfile);
+ }
+ if (msym)
+ valu = SYMBOL_VALUE_ADDRESS (msym);
+ }
+#endif
+
#ifdef SUN_FIXED_LBRAC_BUG
/* The Sun acc compiler, under SunOS4, puts out
functions with N_GSYM or N_STSYM. The problem is
previous function. This means that we can use the
minimal symbol table to get the address. */
- /* On solaris up to 2.2, the N_FUN stab gets relocated.
- On Solaris 2.3, ld no longer relocates stabs (which
- is good), and the N_FUN's value is now always zero.
- The following code can't deal with this, because
- last_pc_address depends on getting the address from a
- N_SLINE or some such and in Solaris those are function
- relative. Best fix is probably to create a Ttext.text symbol
- and handle this like Ddata.data and so on. */
-
- if (type == N_GSYM || type == N_STSYM)
+ /* Starting with release 3.0, the Sun acc compiler,
+ under SunOS4, puts out functions with N_FUN and a value
+ of zero. This gets relocated to the start of the text
+ segment of the module, which is no good either.
+ Under SunOS4 we can deal with this as N_SLINE and N_SO
+ entries contain valid absolute addresses.
+ Release 3.0 acc also puts out N_OPT entries, which makes
+ it possible to discern acc from cc or gcc. */
+
+ if (type == N_GSYM || type == N_STSYM
+ || (type == N_FUN
+ && n_opt_found && !block_address_function_relative))
{
struct minimal_symbol *m;
int l = colon_pos - name;
m = lookup_minimal_symbol_by_pc (last_pc_address);
- if (m && STREQN (SYMBOL_NAME (m), name, l))
+ if (m && STREQN (SYMBOL_NAME (m), name, l)
+ && SYMBOL_NAME (m) [l] == '\0')
/* last_pc_address was in this function */
valu = SYMBOL_VALUE (m);
- else if (m && STREQN (SYMBOL_NAME (m+1), name, l))
+ else if (m && SYMBOL_NAME (m+1)
+ && STREQN (SYMBOL_NAME (m+1), name, l)
+ && SYMBOL_NAME (m+1) [l] == '\0')
/* last_pc_address was in last function */
valu = SYMBOL_VALUE (m+1);
else
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;
}
+ /* '#' is a GNU C extension to allow one symbol to refer to another
+ related symbol.
+
+ Generally this is used so that an alias can refer to its main
+ symbol. */
+ if (name[0] == '#')
+ {
+ /* Initialize symbol reference names and determine if this is
+ a definition. If symbol reference is being defined, go
+ ahead and add it. Otherwise, just return sym. */
+
+ char *s = name;
+ int refnum;
+
+ /* If this stab defines a new reference ID that is not on the
+ reference list, then put it on the reference list.
+
+ We go ahead and advance NAME past the reference, even though
+ it is not strictly necessary at this time. */
+ refnum = symbol_reference_defined (&s);
+ if (refnum >= 0)
+ if (!ref_search (refnum))
+ ref_add (refnum, 0, name, valu);
+ name = s;
+ }
+
+
previous_stab_code = type;
}
\f
-/* FIXME: The only difference between this and elfstab_build_psymtabs is
- the call to install_minimal_symbols for elf. If the differences are
- really that small, the code should be shared. */
+/* FIXME: The only difference between this and elfstab_build_psymtabs
+ is the call to install_minimal_symbols for elf, and the support for
+ split sections. If the differences are really that small, the code
+ should be shared. */
/* Scan and build partial symbols for an coff symbol file.
The coff file has already been processed to get its minimal symbols.
the base address of the text segment).
MAINLINE is true if we are reading the main symbol
table (as opposed to a shared lib or dynamically loaded file).
- STABOFFSET and STABSIZE define the location in OBJFILE where the .stab
- section exists.
+ TEXTADDR is the address of the text section.
+ TEXTSIZE is the size of the text section.
+ STABSECTS is the list of .stab sections in OBJFILE.
STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the
.stabstr section exists.
void
coffstab_build_psymtabs (objfile, section_offsets, mainline,
- staboffset, stabsize,
+ textaddr, textsize, stabsects,
stabstroffset, stabstrsize)
struct objfile *objfile;
struct section_offsets *section_offsets;
int mainline;
- file_ptr staboffset;
- unsigned int stabsize;
+ CORE_ADDR textaddr;
+ unsigned int textsize;
+ struct stab_section_list *stabsects;
file_ptr stabstroffset;
unsigned int stabstrsize;
{
bfd *sym_bfd = objfile->obfd;
char *name = bfd_get_filename (sym_bfd);
struct dbx_symfile_info *info;
+ unsigned int stabsize;
/* There is already a dbx_symfile_info allocated by our caller.
It might even contain some info from the coff symtab to help us. */
- info = (struct dbx_symfile_info *) objfile->sym_stab_info;
+ info = objfile->sym_stab_info;
- DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text");
- if (!DBX_TEXT_SECT (objfile))
- error ("Can't find .text section in symbol file");
+ DBX_TEXT_ADDR (objfile) = textaddr;
+ DBX_TEXT_SIZE (objfile) = textsize;
#define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */
DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE;
- DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile);
DBX_STRINGTAB_SIZE (objfile) = stabstrsize;
- DBX_SYMTAB_OFFSET (objfile) = staboffset;
if (stabstrsize > bfd_get_size (sym_bfd))
error ("ridiculous string table size: %d bytes", stabstrsize);
DBX_STRINGTAB (objfile) = (char *)
obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1);
+ OBJSTAT (objfile, sz_strtab += stabstrsize+1);
/* Now read in the string table in one big gulp. */
/* In a coff file, we've already installed the minimal symbols that came
from the coff (non-stab) symbol table, so always act like an
incremental load here. */
+ if (stabsects->next == NULL)
+ {
+ stabsize = bfd_section_size (sym_bfd, stabsects->section);
+ DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile);
+ DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos;
+ }
+ else
+ {
+ struct stab_section_list *stabsect;
+
+ DBX_SYMCOUNT (objfile) = 0;
+ for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next)
+ {
+ stabsize = bfd_section_size (sym_bfd, stabsect->section);
+ DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile);
+ }
+
+ DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos;
+
+ symbuf_sections = stabsects->next;
+ symbuf_left = bfd_section_size (sym_bfd, stabsects->section);
+ symbuf_read = 0;
+ }
+
dbx_symfile_read (objfile, section_offsets, 0);
}
\f
bfd *sym_bfd = objfile->obfd;
char *name = bfd_get_filename (sym_bfd);
struct dbx_symfile_info *info;
+ asection *text_sect;
/* There is already a dbx_symfile_info allocated by our caller.
It might even contain some info from the ELF symtab to help us. */
- info = (struct dbx_symfile_info *) objfile->sym_stab_info;
+ info = objfile->sym_stab_info;
- DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text");
- if (!DBX_TEXT_SECT (objfile))
+ text_sect = bfd_get_section_by_name (sym_bfd, ".text");
+ if (!text_sect)
error ("Can't find .text section in symbol file");
+ DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect);
+ DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect);
#define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */
DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE;
error ("ridiculous string table size: %d bytes", stabstrsize);
DBX_STRINGTAB (objfile) = (char *)
obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1);
+ OBJSTAT (objfile, sz_strtab += stabstrsize+1);
/* Now read in the string table in one big gulp. */
dbx_symfile_read (objfile, section_offsets, 0);
}
\f
-/* Scan and build partial symbols for a PA symbol file.
- This PA file has already been processed to get its minimal symbols.
+/* Scan and build partial symbols for a file with special sections for stabs
+ and stabstrings. The file has already been processed to get its minimal
+ symbols, and any other symbols that might be necessary to resolve GSYMs.
+
+ This routine is the equivalent of dbx_symfile_init and dbx_symfile_read
+ rolled into one.
OBJFILE is the object file we are reading symbols from.
- ADDR is the address relative to which the symbols are (e.g.
- the base address of the text segment).
- MAINLINE is true if we are reading the main symbol
- table (as opposed to a shared lib or dynamically loaded file).
+ ADDR is the address relative to which the symbols are (e.g. the base address
+ of the text segment).
+ MAINLINE is true if we are reading the main symbol table (as opposed to a
+ shared lib or dynamically loaded file).
+ STAB_NAME is the name of the section that contains the stabs.
+ STABSTR_NAME is the name of the section that contains the stab strings.
- */
+ This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */
void
-pastab_build_psymtabs (objfile, section_offsets, mainline)
+stabsect_build_psymtabs (objfile, section_offsets, mainline, stab_name,
+ stabstr_name, text_name)
struct objfile *objfile;
struct section_offsets *section_offsets;
int mainline;
+ char *stab_name;
+ char *stabstr_name;
+ char *text_name;
{
- free_header_files ();
- init_header_files ();
+ int val;
+ bfd *sym_bfd = objfile->obfd;
+ char *name = bfd_get_filename (sym_bfd);
+ asection *stabsect;
+ asection *stabstrsect;
+ asection *text_sect;
- /* This is needed to debug objects assembled with gas2. */
- processing_acc_compilation = 1;
+ stabsect = bfd_get_section_by_name (sym_bfd, stab_name);
+ stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name);
- /* In a PA file, we've already installed the minimal symbols that came
- from the PA (non-stab) symbol table, so always act like an
- incremental load here. */
+ if (!stabsect)
+ return;
- dbx_symfile_read (objfile, section_offsets, mainline);
-}
-\f
-/* Parse the user's idea of an offset for dynamic linking, into our idea
- of how to represent it for fast symbol reading. */
+ if (!stabstrsect)
+ error ("stabsect_build_psymtabs: Found stabs (%s), but not string section (%s)",
+ stab_name, stabstr_name);
+
+ objfile->sym_stab_info = (struct dbx_symfile_info *)
+ xmalloc (sizeof (struct dbx_symfile_info));
+ memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info));
+
+ text_sect = bfd_get_section_by_name (sym_bfd, text_name);
+ if (!text_sect)
+ error ("Can't find %s section in symbol file", text_name);
+ DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect);
+ DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect);
+
+ DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist);
+ DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect)
+ / DBX_SYMBOL_SIZE (objfile);
+ DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect);
+ DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */
+
+ if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd))
+ error ("ridiculous string table size: %d bytes", DBX_STRINGTAB_SIZE (objfile));
+ DBX_STRINGTAB (objfile) = (char *)
+ obstack_alloc (&objfile->psymbol_obstack, DBX_STRINGTAB_SIZE (objfile) + 1);
+ OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1);
-static struct section_offsets *
-dbx_symfile_offsets (objfile, addr)
- struct objfile *objfile;
- CORE_ADDR addr;
-{
- struct section_offsets *section_offsets;
- int i;
+ /* Now read in the string table in one big gulp. */
- objfile->num_sections = SECT_OFF_MAX;
- section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile -> psymbol_obstack,
- sizeof (struct section_offsets)
- + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1));
+ val = bfd_get_section_contents (sym_bfd, /* bfd */
+ stabstrsect, /* bfd section */
+ DBX_STRINGTAB (objfile), /* input buffer */
+ 0, /* offset into section */
+ DBX_STRINGTAB_SIZE (objfile)); /* amount to read */
- for (i = 0; i < SECT_OFF_MAX; i++)
- ANOFFSET (section_offsets, i) = addr;
-
- return section_offsets;
+ if (!val)
+ perror_with_name (name);
+
+ stabsread_new_init ();
+ buildsym_new_init ();
+ free_header_files ();
+ init_header_files ();
+ install_minimal_symbols (objfile);
+
+ /* Now, do an incremental load */
+
+ processing_acc_compilation = 1;
+ dbx_symfile_read (objfile, section_offsets, 0);
}
\f
static struct sym_fns aout_sym_fns =
dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */
dbx_symfile_read, /* sym_read: read a symbol file into symtab */
dbx_symfile_finish, /* sym_finish: finished with file, cleanup */
- dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */
+ default_symfile_offsets,
+ /* sym_offsets: parse user's offsets to internal form */
NULL /* next: pointer to next struct sym_fns */
};
projects / thirdparty / binutils-gdb.git / blobdiff