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Eliminate uses of NAMES_HAVE_UNDERSCORE, using

Browse Source 
bfd_get_symbol_leading_char instead.

* coffread.c (EXTERNAL_NAME):  New macro for removing possible
leading character from names.
(read_coff_symtab):  Use BFD's FILE *, don't open a second one.
(read_coff_symtab):  Complain() about .bb/.eb mismatch, don't error().
(process_coff_symbol, coff_read_struct_type, coff_read_enum_type):
Replace NAMES_HAVE_UNDERSCORE with EXTERNAL_NAME.

* kdb-start.c (main):  Remove NAMES_HAVE_UNDERSCORE.
* minsyms.c (install_minimal_symbols):  Replace NAMES_HAVE_UNDERSCORE.
Remove SOME_NAMES_HAVE_DOT support (apparently unused).
* partial-stab.h:  Replace NAMES_HAVE_UNDERSCORE.
* solib.c:  Replace NAMES_HAVE_UNDERSCORE.
* stabsread.h:  Remove NAMES_HAVE_UNDERSCORE and HASH_OFFSET.
* symfile.c (syms_from_objfile):  Insert debugging check to test
NAMES_HAVE_UNDERSCORE setting against the BFD support.  FIXME,
remove this (and all tm-*.h NAMES_HAVE_UNDERSCORE) soon.

* doc/gdbint.texinfo (Host Conditionals):  Remove
NAMES_HAVE_UNDERSCORE, SOME_NAMES_HAVE_DOT, document
MEM_FNS_DECLARED.
(Target Conditionals):  Remove all of the above.
This commit is contained in:
John Gilmore 1992-12-17 09:15:10 +00:00
parent 8cedeccaa8
commit de9bef49be
8 changed files with 100 additions and 72 deletions
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27
gdb/ChangeLog
View File

@ -1,3 +1,30 @@
Thu Dec 17 00:44:57 1992 John Gilmore (gnu@cygnus.com)
Eliminate uses of NAMES_HAVE_UNDERSCORE, using
bfd_get_symbol_leading_char instead.
* coffread.c (EXTERNAL_NAME): New macro for removing possible
leading character from names.
(read_coff_symtab): Use BFD's FILE *, don't open a second one.
(read_coff_symtab): Complain() about .bb/.eb mismatch, don't error().
(process_coff_symbol, coff_read_struct_type, coff_read_enum_type):
Replace NAMES_HAVE_UNDERSCORE with EXTERNAL_NAME.
* kdb-start.c (main): Remove NAMES_HAVE_UNDERSCORE.
* minsyms.c (install_minimal_symbols): Replace NAMES_HAVE_UNDERSCORE.
Remove SOME_NAMES_HAVE_DOT support (apparently unused).
* partial-stab.h: Replace NAMES_HAVE_UNDERSCORE.
* solib.c: Replace NAMES_HAVE_UNDERSCORE.
* stabsread.h: Remove NAMES_HAVE_UNDERSCORE and HASH_OFFSET.
* symfile.c (syms_from_objfile): Insert debugging check to test
NAMES_HAVE_UNDERSCORE setting against the BFD support. FIXME,
remove this (and all tm-*.h NAMES_HAVE_UNDERSCORE) soon.
* doc/gdbint.texinfo (Host Conditionals): Remove
NAMES_HAVE_UNDERSCORE, SOME_NAMES_HAVE_DOT, document
MEM_FNS_DECLARED.
(Target Conditionals): Remove all of the above.
Tue Dec 15 10:05:56 1992 Ian Lance Taylor (ian@cygnus.com)
* coffread.c (decode_type): catch negative tagndx fields generated

42
gdb/coffread.c
View File

@ -1,6 +1,6 @@
/* Read coff symbol tables and convert to internal format, for GDB.
Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu).
Copyright 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
Copyright 1987, 1988, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
This file is part of GDB.
@ -31,9 +31,14 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <string.h>
#include "libbfd.h" /* FIXME secret internal data from BFD */
#include "coff/internal.h" /* Internal format of COFF symbols in BFD */
#include "libcoff.h" /* FIXME secret internal data from BFD */
/* Translate an external name string into a user-visible name. */
#define EXTERNAL_NAME(string, abfd) \
(string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string)
/* To be an sdb debug type, type must have at least a basic or primary
derived type. Using this rather than checking against T_NULL is
said to prevent core dumps if we try to operate on Michael Bloom
@ -190,6 +195,9 @@ struct complaint misordered_blocks_complaint =
struct complaint tagndx_bad_complaint =
{"Symbol table entry for %s has bad tagndx value", 0, 0};
struct complaint eb_complaint =
{"Mismatched .eb symbol ignored starting at symnum %d", 0, 0};
/* Simplified internal version of coff symbol table information */
struct coff_symbol {
@ -901,7 +909,7 @@ read_coff_symtab (symtab_offset, nsyms, objfile)
struct cleanup *old_chain;
int val;
stream = fopen (objfile->name, FOPEN_RB);
stream = bfd_cache_lookup(objfile->obfd);
if (!stream)
perror_with_name(objfile->name);
@ -910,9 +918,8 @@ read_coff_symtab (symtab_offset, nsyms, objfile)
if (val < 0)
perror_with_name (objfile->name);
/* These cleanups will be discarded below if we succeed. */
/* This cleanup will be discarded below if we succeed. */
old_chain = make_cleanup (free_objfile, objfile);
make_cleanup (fclose, stream);
current_objfile = objfile;
nlist_stream_global = stream;
@ -1148,8 +1155,10 @@ read_coff_symtab (symtab_offset, nsyms, objfile)
{
new = coff_context_stack;
if (new == 0 || depth != new->depth)
error ("Invalid symbol data: .bb/.eb symbol mismatch at symbol %d.",
symnum);
{
complain (&eb_complaint, (char *)symnum);
break;
}
if (coff_local_symbols && coff_context_stack->next)
{
/* Make a block for the local symbols within. */
@ -1567,16 +1576,11 @@ process_coff_symbol (cs, aux, objfile)
register struct symbol *sym
= (struct symbol *) obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
char *name;
#ifdef NAMES_HAVE_UNDERSCORE
int offset = 1;
#else
int offset = 0;
#endif
struct type *temptype;
memset (sym, 0, sizeof (struct symbol));
name = cs->c_name;
name = (name[0] == '_' ? name + offset : name);
name = EXTERNAL_NAME (name, objfile->obfd);
SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name, strlen (name));
/* default assumptions */
@ -1976,11 +1980,6 @@ coff_read_struct_type (index, length, lastsym)
int nfields = 0;
register int n;
char *name;
#ifdef NAMES_HAVE_UNDERSCORE
int offset = 1;
#else
int offset = 0;
#endif
struct coff_symbol member_sym;
register struct coff_symbol *ms = &member_sym;
struct internal_syment sub_sym;
@ -1996,7 +1995,7 @@ coff_read_struct_type (index, length, lastsym)
{
read_one_sym (ms, &sub_sym, &sub_aux);
name = ms->c_name;
name = (name[0] == '_' ? name + offset : name);
name = EXTERNAL_NAME (name, current_objfile->obfd);
switch (ms->c_sclass)
{
@ -2074,11 +2073,6 @@ coff_read_enum_type (index, length, lastsym)
struct coff_pending *osyms, *syms;
register int n;
char *name;
#ifdef NAMES_HAVE_UNDERSCORE
int offset = 1;
#else
int offset = 0;
#endif
type = coff_alloc_type (index);
if (within_function)
@ -2091,7 +2085,7 @@ coff_read_enum_type (index, length, lastsym)
{
read_one_sym (ms, &sub_sym, &sub_aux);
name = ms->c_name;
name = (name[0] == '_' ? name + offset : name);
name = EXTERNAL_NAME (name, current_objfile->obfd);
switch (ms->c_sclass)
{

6
gdb/kdb-start.c
View File

@ -1,5 +1,5 @@
/* Main loop for the standalone kernel debugger, for GDB, the GNU Debugger.
Copyright 1989, 1991 Free Software Foundation, Inc.
Copyright 1989, 1991, 1992 Free Software Foundation, Inc.
This file is part of GDB.
@ -27,11 +27,7 @@ char **environ;
start ()
{
#ifdef NAMES_HAVE_UNDERSCORE
INIT_STACK (_kdb_stack_beg, _kdb_stack_end);
#else /* not NAMES_HAVE_UNDERSCORE */
INIT_STACK (kdb_stack_beg, kdb_stack_end);
#endif /* not NAMES_HAVE_UNDERSCORE */
environ = environment;

12
gdb/minsyms.c
View File

@ -424,6 +424,7 @@ install_minimal_symbols (objfile)
register struct msym_bunch *bunch;
register struct minimal_symbol *msymbols;
int alloc_count;
register char leading_char;
if (msym_count > 0)
{
@ -451,24 +452,17 @@ install_minimal_symbols (objfile)
each bunch is full. */
mcount = objfile->minimal_symbol_count;
leading_char = bfd_get_symbol_leading_char (objfile->obfd);
for (bunch = msym_bunch; bunch != NULL; bunch = bunch -> next)
{
for (bindex = 0; bindex < msym_bunch_index; bindex++, mcount++)
{
msymbols[mcount] = bunch -> contents[bindex];
#ifdef NAMES_HAVE_UNDERSCORE
if (msymbols[mcount].name[0] == '_')
if (msymbols[mcount].name[0] == leading_char)
{
msymbols[mcount].name++;
}
#endif
#ifdef SOME_NAMES_HAVE_DOT
if (msymbols[mcount].name[0] == '.')
{
msymbols[mcount].name++;
}
#endif
}
msym_bunch_index = BUNCH_SIZE;
}

20
gdb/partial-stab.h
View File

@ -117,13 +117,19 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
SET_NAMESTRING ();
/* Check for __DYNAMIC, which is used by Sun shared libraries.
Record it even if it's local, not global, so we can find it.
Same with virtual function tables, both global and static. */
if ((namestring[8] == 'C' && (strcmp ("__DYNAMIC", namestring) == 0))
|| VTBL_PREFIX_P ((namestring+HASH_OFFSET)))
{
record_minimal_symbol (namestring, CUR_SYMBOL_VALUE,
CUR_SYMBOL_TYPE, objfile); /* Always */
}
FIXME: this might want to check for _DYNAMIC and the current
symbol_leading_char. */
if (namestring[8] == 'C' && !strcmp ("__DYNAMIC", namestring))
goto record_it;
/* Same with virtual function tables, both global and static. */
{
char *tempstring = namestring;
if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd))
tempstring++;
if (VTBL_PREFIX_P ((tempstring)))
goto record_it;
}
#endif /* DBXREAD_ONLY */
continue;

38
gdb/solib.c
View File

@ -90,7 +90,6 @@ struct so_list {
char so_name[MAX_PATH_SIZE]; /* shared object lib name (FIXME) */
char symbols_loaded; /* flag: symbols read in yet? */
char from_tty; /* flag: print msgs? */
bfd *so_bfd; /* bfd for so_name */
struct objfile *objfile; /* objfile for loaded lib */
struct section_table *sections;
struct section_table *sections_end;
@ -186,9 +185,11 @@ solib_map_sections (so)
char *scratch_pathname;
int scratch_chan;
struct section_table *p;
struct cleanup *old_chain;
bfd *abfd;
filename = tilde_expand (so -> so_name);
make_cleanup (free, filename);
old_chain = make_cleanup (free, filename);
scratch_chan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0,
&scratch_pathname);
@ -201,19 +202,24 @@ solib_map_sections (so)
{
perror_with_name (filename);
}
make_cleanup (free, scratch_pathname);
so -> so_bfd = bfd_fdopenr (scratch_pathname, NULL, scratch_chan);
if (!so -> so_bfd)
abfd = bfd_fdopenr (scratch_pathname, NULL, scratch_chan);
if (!abfd)
{
close (scratch_chan);
error ("Could not open `%s' as an executable file: %s",
scratch_pathname, bfd_errmsg (bfd_error));
}
if (!bfd_check_format (so -> so_bfd, bfd_object))
make_cleanup (bfd_close, abfd); /* Zap bfd, close scratch_chan. */
if (!bfd_check_format (abfd, bfd_object))
{
error ("\"%s\": not in executable format: %s.",
scratch_pathname, bfd_errmsg (bfd_error));
}
if (build_section_table (so -> so_bfd, &so -> sections, &so -> sections_end))
if (build_section_table (abfd, &so -> sections, &so -> sections_end))
{
error ("Can't find the file sections in `%s': %s",
exec_bfd -> filename, bfd_errmsg (bfd_error));
@ -232,6 +238,9 @@ solib_map_sections (so)
so -> textsection = p;
}
}
/* Free the file names, close the file now. */
do_cleanups (old_chain);
}
/* Read all dynamically loaded common symbol definitions from the inferior
@ -273,12 +282,11 @@ solib_add_common_symbols (rtc_symp, objfile)
/* Don't enter the symbol twice if the target is re-run. */
#ifdef NAMES_HAVE_UNDERSCORE
if (*name == '_')
if (name[0] == bfd_get_symbol_leading_char (objfile->obfd))
{
name++;
}
#endif
/* FIXME: Do we really want to exclude symbols which happen
to match symbols for other locations in the inferior's
address space, even when they are in different linkage units? */
@ -634,7 +642,7 @@ find_solib (so_list_ptr)
/* Get next link map structure from inferior image and build a local
abbreviated load_map structure */
new = (struct so_list *) xmalloc (sizeof (struct so_list));
(void) memset ((char *) new, 0, sizeof (struct so_list));
memset ((char *) new, 0, sizeof (struct so_list));
new -> lmaddr = lm;
/* Add the new node as the next node in the list, or as the root
node if this is the first one. */
@ -774,9 +782,9 @@ solib_add (arg_string, from_tty, target)
if (so -> so_name[0])
{
count = so -> sections_end - so -> sections;
(void) memcpy ((char *) (target -> to_sections + old),
so -> sections,
(sizeof (struct section_table)) * count);
memcpy ((char *) (target -> to_sections + old),
so -> sections,
(sizeof (struct section_table)) * count);
old += count;
}
}
@ -892,10 +900,6 @@ clear_solib()
{
free ((PTR)so_list_head -> sections);
}
if (so_list_head -> so_bfd)
{
bfd_close (so_list_head -> so_bfd);
}
next = so_list_head -> next;
free((PTR)so_list_head);
so_list_head = next;

11
gdb/stabsread.h
View File

@ -1,5 +1,5 @@
/* Include file for stabs debugging format support functions.
Copyright (C) 1986-1992 Free Software Foundation, Inc.
Copyright 1986-1991, 1992 Free Software Foundation, Inc.
This file is part of GDB.
@ -68,15 +68,6 @@ EXTERN int common_block_i;
Used to detect pairs of N_SO symbols. */
EXTERN int previous_stab_code;
/* Setup a define to deal cleanly with the underscore problem */
#ifdef NAMES_HAVE_UNDERSCORE
#define HASH_OFFSET 1
#else
#define HASH_OFFSET 0
#endif
/* Support for Sun changes to dbx symbol format */

16
gdb/symfile.c
View File

@ -439,6 +439,22 @@ syms_from_objfile (objfile, addr, mainline, verbo)
addr -= bfd_section_vma (objfile->obfd, lowest_sect);
}
/* Debugging check inserted for testing elimination of NAMES_HAVE_UNDERSCORE.
Complain if the dynamic setting of NAMES_HAVE_UNDERSCORE from BFD
doesn't match the static setting from the GDB config files.
FIXME: Remove this check after a round of testing.
-- gnu@cygnus.com, 16dec92 */
#ifdef NAMES_HAVE_UNDERSCORE
if (bfd_get_symbol_leading_char(objfile->obfd) != '_')
#else
if (bfd_get_symbol_leading_char(objfile->obfd) != 0)
#endif
fprintf (stderr,
"GDB internal error! NAMES_HAVE_UNDERSCORE set wrong for %s BFD:\n%s\n",
objfile->obfd->xvec->name,
objfile->obfd->filename);
/* End of debugging check. FIXME. */
/* Initialize symbol reading routines for this objfile, allow complaints to
appear for this new file, and record how verbose to be, then do the
initial symbol reading for this file. */