/* 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, 1993
+ 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. */
-\f
+
#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#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
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 {
int old_vector_length = type_vector_length;
type_vector_length *= 2;
- if (type_vector_length < index) {
+ if (index /* is still */ >= type_vector_length) {
type_vector_length = index * 2;
}
type_vector = (struct type **)
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);
+ /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous....
+ it's hard to know I've really worked around it. The fix should be
+ harmless, anyway). The symptom of the bug is that the first
+ fread (in read_one_sym), will (in my example) actually get data
+ from file offset 268, when the fseek was to 264 (and ftell shows
+ 264). This causes all hell to break loose. I was unable to
+ reproduce this on a short test program which operated on the same
+ file, performing (I think) the same sequence of operations.
+
+ It stopped happening when I put in this rewind().
+
+ FIXME: Find out if this has been reported to Sun, whether it has
+ been fixed in a later release, etc. */
+
+ rewind (stream);
+
/* Position to read the symbol table. */
val = fseek (stream, (long)symtab_offset, 0);
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;
case C_STAT:
if (cs->c_name[0] == '.') {
- if (strcmp (cs->c_name, ".text") == 0) {
+ if (STREQ (cs->c_name, ".text")) {
/* FIXME: don't wire in ".text" as section name
or symbol name! */
if (++num_object_files == 1) {
break;
case C_FCN:
- if (strcmp (cs->c_name, ".bf") == 0)
+ if (STREQ (cs->c_name, ".bf"))
{
within_function = 1;
new->name = process_coff_symbol (&fcn_cs_saved,
&fcn_aux_saved, objfile);
}
- else if (strcmp (cs->c_name, ".ef") == 0)
+ else if (STREQ (cs->c_name, ".ef"))
{
/* the value of .ef is the address of epilogue code;
* not useful for gdb
break;
case C_BLOCK:
- if (strcmp (cs->c_name, ".bb") == 0)
+ if (STREQ (cs->c_name, ".bb"))
{
new = (struct coff_context_stack *)
xmalloc (sizeof (struct coff_context_stack));
new->name = 0;
coff_local_symbols = 0;
}
- else if (strcmp (cs->c_name, ".eb") == 0)
+ else if (STREQ (cs->c_name, ".eb"))
{
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. */
return result;
}
+/* Extract the file name from the aux entry of a C_FILE symbol. Return
+ only the last component of the name. Result is in static storage and
+ is only good for temporary use. */
+
static char *
getfilename (aux_entry)
union internal_auxent *aux_entry;
register char *temp;
char *result;
-#ifndef COFF_NO_LONG_FILE_NAMES
-#if defined (x_zeroes)
- /* Data General. */
- if (aux_entry->x_zeroes == 0)
- strcpy (buffer, stringtab + aux_entry->x_offset);
-#else /* no x_zeroes */
if (aux_entry->x_file.x_n.x_zeroes == 0)
strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset);
-#endif /* no x_zeroes */
else
-#endif /* COFF_NO_LONG_FILE_NAMES */
{
-#if defined (x_name)
- /* Data General. */
- strncpy (buffer, aux_entry->x_name, FILNMLEN);
-#else
strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN);
-#endif
buffer[FILNMLEN] = '\0';
}
result = buffer;
for (sym = opaque_type_chain[hash]; sym;)
{
if (name[0] == SYMBOL_NAME (sym)[0] &&
- !strcmp (name + 1, SYMBOL_NAME (sym) + 1))
+ STREQ (name + 1, SYMBOL_NAME (sym) + 1))
{
if (prev)
{
struct objfile *objfile;
{
register struct symbol *sym
- = (struct symbol *) obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
+ = (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);
- SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name, strlen (name));
+ name = EXTERNAL_NAME (name, objfile->obfd);
+ SYMBOL_NAME (sym) = obstack_copy0 (&objfile->symbol_obstack, name,
+ strlen (name));
/* default assumptions */
SYMBOL_VALUE (sym) = cs->c_value;
add_param_to_type(&in_function_type,sym);
#endif
coff_add_symbol_to_list (sym, &coff_local_symbols);
-#if !defined (BELIEVE_PCC_PROMOTION)
+#if !defined (BELIEVE_PCC_PROMOTION) && (TARGET_BYTE_ORDER == BIG_ENDIAN)
/* If PCC says a parameter is a short or a char,
- it is really an int. */
+ aligned on an int boundary, realign it to the "little end"
+ of the int. */
temptype = lookup_fundamental_type (current_objfile, FT_INTEGER);
if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype)
- && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
+ && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT
+ && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype))
{
- SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym))
- ? lookup_fundamental_type (current_objfile,
- FT_UNSIGNED_INTEGER)
- : temptype;
+ SYMBOL_VALUE (sym) += TYPE_LENGTH (temptype)
+ - TYPE_LENGTH (SYMBOL_TYPE (sym));
}
#endif
break;
SYMBOL_VALUE (sym) = SDB_REG_TO_REGNUM(cs->c_value);
coff_add_symbol_to_list (sym, &coff_local_symbols);
#if !defined (BELIEVE_PCC_PROMOTION)
+ /* FIXME: This should retain the current type, since it's just
+ a register value. gnu@adobe, 26Feb93 */
/* If PCC says a parameter is a short or a char,
it is really an int. */
temptype = lookup_fundamental_type (current_objfile, FT_INTEGER);
{
int i, n;
register unsigned short *dim;
- struct type *base_type, *index_type;
+ struct type *base_type, *index_type, *range_type;
/* Define an array type. */
/* auxent refers to array, not base type */
base_type = decode_type (cs, new_c_type, aux);
index_type = lookup_fundamental_type (current_objfile, FT_INTEGER);
- type = create_array_type ((struct type *) NULL, base_type,
- index_type, 0, n - 1);
+ range_type =
+ create_range_type ((struct type *) NULL, index_type, 0, n - 1);
+ type =
+ create_array_type ((struct type *) NULL, base_type, range_type);
}
return type;
}
struct, union, and enum types. EPI a29k coff
fakes us out by producing aux entries with a nonzero
x_tagndx for definitions of structs, unions, and enums, so we
- have to check the c_sclass field. */
+ have to check the c_sclass field. SCO 3.2v4 cc gets confused
+ with pointers to pointers to defined structs, and generates
+ negative x_tagndx fields. */
if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0)
{
- if (cs->c_sclass != C_STRTAG
- && cs->c_sclass != C_UNTAG
- && cs->c_sclass != C_ENTAG)
+ if (cs->c_sclass != C_STRTAG
+ && cs->c_sclass != C_UNTAG
+ && cs->c_sclass != C_ENTAG
+ && aux->x_sym.x_tagndx.l >= 0)
{
type = coff_alloc_type (aux->x_sym.x_tagndx.l);
return type;
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;
{
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)
{
/* Read a definition of an enumeration type,
and create and return a suitable type object.
Also defines the symbols that represent the values of the type. */
-/* Currently assumes it's sizeof (int) and doesn't use length. */
/* ARGSUSED */
static struct type *
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)
{
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)
{
/* Now fill in the fields of the type-structure. */
- TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT;
+ if (length > 0)
+ TYPE_LENGTH (type) = length;
+ else
+ TYPE_LENGTH (type) = TARGET_INT_BIT / TARGET_CHAR_BIT; /* Assume ints */
TYPE_CODE (type) = TYPE_CODE_ENUM;
TYPE_NFIELDS (type) = nsyms;
TYPE_FIELDS (type) = (struct field *)
}
/* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
if(TYPE_NFIELDS(type) == 2 &&
- ((!strcmp(TYPE_FIELD_NAME(type,0),"TRUE") &&
- !strcmp(TYPE_FIELD_NAME(type,1),"FALSE")) ||
- (!strcmp(TYPE_FIELD_NAME(type,1),"TRUE") &&
- !strcmp(TYPE_FIELD_NAME(type,0),"FALSE"))))
+ ((STREQ(TYPE_FIELD_NAME(type,0),"TRUE") &&
+ STREQ(TYPE_FIELD_NAME(type,1),"FALSE")) ||
+ (STREQ(TYPE_FIELD_NAME(type,1),"TRUE") &&
+ STREQ(TYPE_FIELD_NAME(type,0),"FALSE"))))
TYPE_CODE(type) = TYPE_CODE_BOOL;
return type;
}
projects / deliverable / binutils-gdb.git / blobdiff